diff options
Diffstat (limited to 'arch/s390/include')
150 files changed, 16584 insertions, 0 deletions
diff --git a/arch/s390/include/asm/Kbuild b/arch/s390/include/asm/Kbuild new file mode 100644 index 00000000..287d7bbb --- /dev/null +++ b/arch/s390/include/asm/Kbuild @@ -0,0 +1,15 @@ +include include/asm-generic/Kbuild.asm + +header-y += chpid.h +header-y += chsc.h +header-y += cmb.h +header-y += dasd.h +header-y += debug.h +header-y += kvm_virtio.h +header-y += monwriter.h +header-y += qeth.h +header-y += schid.h +header-y += tape390.h +header-y += ucontext.h +header-y += vtoc.h +header-y += zcrypt.h diff --git a/arch/s390/include/asm/airq.h b/arch/s390/include/asm/airq.h new file mode 100644 index 00000000..1ac80d6b --- /dev/null +++ b/arch/s390/include/asm/airq.h @@ -0,0 +1,19 @@ +/* + * include/asm-s390/airq.h + * + * Copyright IBM Corp. 2002,2007 + * Author(s): Ingo Adlung <adlung@de.ibm.com> + * Cornelia Huck <cornelia.huck@de.ibm.com> + * Arnd Bergmann <arndb@de.ibm.com> + * Peter Oberparleiter <peter.oberparleiter@de.ibm.com> + */ + +#ifndef _ASM_S390_AIRQ_H +#define _ASM_S390_AIRQ_H + +typedef void (*adapter_int_handler_t)(void *, void *); + +void *s390_register_adapter_interrupt(adapter_int_handler_t, void *, u8); +void s390_unregister_adapter_interrupt(void *, u8); + +#endif /* _ASM_S390_AIRQ_H */ diff --git a/arch/s390/include/asm/appldata.h b/arch/s390/include/asm/appldata.h new file mode 100644 index 00000000..79283dac --- /dev/null +++ b/arch/s390/include/asm/appldata.h @@ -0,0 +1,90 @@ +/* + * include/asm-s390/appldata.h + * + * Copyright (C) IBM Corp. 2006 + * + * Author(s): Melissa Howland <melissah@us.ibm.com> + */ + +#ifndef _ASM_S390_APPLDATA_H +#define _ASM_S390_APPLDATA_H + +#include <asm/io.h> + +#ifndef CONFIG_64BIT + +#define APPLDATA_START_INTERVAL_REC 0x00 /* Function codes for */ +#define APPLDATA_STOP_REC 0x01 /* DIAG 0xDC */ +#define APPLDATA_GEN_EVENT_REC 0x02 +#define APPLDATA_START_CONFIG_REC 0x03 + +/* + * Parameter list for DIAGNOSE X'DC' + */ +struct appldata_parameter_list { + u16 diag; /* The DIAGNOSE code X'00DC' */ + u8 function; /* The function code for the DIAGNOSE */ + u8 parlist_length; /* Length of the parameter list */ + u32 product_id_addr; /* Address of the 16-byte product ID */ + u16 reserved; + u16 buffer_length; /* Length of the application data buffer */ + u32 buffer_addr; /* Address of the application data buffer */ +} __attribute__ ((packed)); + +#else /* CONFIG_64BIT */ + +#define APPLDATA_START_INTERVAL_REC 0x80 +#define APPLDATA_STOP_REC 0x81 +#define APPLDATA_GEN_EVENT_REC 0x82 +#define APPLDATA_START_CONFIG_REC 0x83 + +/* + * Parameter list for DIAGNOSE X'DC' + */ +struct appldata_parameter_list { + u16 diag; + u8 function; + u8 parlist_length; + u32 unused01; + u16 reserved; + u16 buffer_length; + u32 unused02; + u64 product_id_addr; + u64 buffer_addr; +} __attribute__ ((packed)); + +#endif /* CONFIG_64BIT */ + +struct appldata_product_id { + char prod_nr[7]; /* product number */ + u16 prod_fn; /* product function */ + u8 record_nr; /* record number */ + u16 version_nr; /* version */ + u16 release_nr; /* release */ + u16 mod_lvl; /* modification level */ +} __attribute__ ((packed)); + +static inline int appldata_asm(struct appldata_product_id *id, + unsigned short fn, void *buffer, + unsigned short length) +{ + struct appldata_parameter_list parm_list; + int ry; + + if (!MACHINE_IS_VM) + return -ENOSYS; + parm_list.diag = 0xdc; + parm_list.function = fn; + parm_list.parlist_length = sizeof(parm_list); + parm_list.buffer_length = length; + parm_list.product_id_addr = (unsigned long) id; + parm_list.buffer_addr = virt_to_phys(buffer); + asm volatile( + " diag %1,%0,0xdc" + : "=d" (ry) + : "d" (&parm_list), "m" (parm_list), "m" (*id) + : "cc"); + return ry; +} + +#endif /* _ASM_S390_APPLDATA_H */ diff --git a/arch/s390/include/asm/asm-offsets.h b/arch/s390/include/asm/asm-offsets.h new file mode 100644 index 00000000..d370ee36 --- /dev/null +++ b/arch/s390/include/asm/asm-offsets.h @@ -0,0 +1 @@ +#include <generated/asm-offsets.h> diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h new file mode 100644 index 00000000..748347ba --- /dev/null +++ b/arch/s390/include/asm/atomic.h @@ -0,0 +1,334 @@ +#ifndef __ARCH_S390_ATOMIC__ +#define __ARCH_S390_ATOMIC__ + +/* + * Copyright 1999,2009 IBM Corp. + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Denis Joseph Barrow, + * Arnd Bergmann <arndb@de.ibm.com>, + * + * Atomic operations that C can't guarantee us. + * Useful for resource counting etc. + * s390 uses 'Compare And Swap' for atomicity in SMP environment. + * + */ + +#include <linux/compiler.h> +#include <linux/types.h> +#include <asm/cmpxchg.h> + +#define ATOMIC_INIT(i) { (i) } + +#define __CS_LOOP(ptr, op_val, op_string) ({ \ + int old_val, new_val; \ + asm volatile( \ + " l %0,%2\n" \ + "0: lr %1,%0\n" \ + op_string " %1,%3\n" \ + " cs %0,%1,%2\n" \ + " jl 0b" \ + : "=&d" (old_val), "=&d" (new_val), \ + "=Q" (((atomic_t *)(ptr))->counter) \ + : "d" (op_val), "Q" (((atomic_t *)(ptr))->counter) \ + : "cc", "memory"); \ + new_val; \ +}) + +static inline int atomic_read(const atomic_t *v) +{ + int c; + + asm volatile( + " l %0,%1\n" + : "=d" (c) : "Q" (v->counter)); + return c; +} + +static inline void atomic_set(atomic_t *v, int i) +{ + asm volatile( + " st %1,%0\n" + : "=Q" (v->counter) : "d" (i)); +} + +static inline int atomic_add_return(int i, atomic_t *v) +{ + return __CS_LOOP(v, i, "ar"); +} +#define atomic_add(_i, _v) atomic_add_return(_i, _v) +#define atomic_add_negative(_i, _v) (atomic_add_return(_i, _v) < 0) +#define atomic_inc(_v) atomic_add_return(1, _v) +#define atomic_inc_return(_v) atomic_add_return(1, _v) +#define atomic_inc_and_test(_v) (atomic_add_return(1, _v) == 0) + +static inline int atomic_sub_return(int i, atomic_t *v) +{ + return __CS_LOOP(v, i, "sr"); +} +#define atomic_sub(_i, _v) atomic_sub_return(_i, _v) +#define atomic_sub_and_test(_i, _v) (atomic_sub_return(_i, _v) == 0) +#define atomic_dec(_v) atomic_sub_return(1, _v) +#define atomic_dec_return(_v) atomic_sub_return(1, _v) +#define atomic_dec_and_test(_v) (atomic_sub_return(1, _v) == 0) + +static inline void atomic_clear_mask(unsigned long mask, atomic_t *v) +{ + __CS_LOOP(v, ~mask, "nr"); +} + +static inline void atomic_set_mask(unsigned long mask, atomic_t *v) +{ + __CS_LOOP(v, mask, "or"); +} + +#define atomic_xchg(v, new) (xchg(&((v)->counter), new)) + +static inline int atomic_cmpxchg(atomic_t *v, int old, int new) +{ + asm volatile( + " cs %0,%2,%1" + : "+d" (old), "=Q" (v->counter) + : "d" (new), "Q" (v->counter) + : "cc", "memory"); + return old; +} + +static inline int __atomic_add_unless(atomic_t *v, int a, int u) +{ + int c, old; + c = atomic_read(v); + for (;;) { + if (unlikely(c == u)) + break; + old = atomic_cmpxchg(v, c, c + a); + if (likely(old == c)) + break; + c = old; + } + return c; +} + + +#undef __CS_LOOP + +#define ATOMIC64_INIT(i) { (i) } + +#ifdef CONFIG_64BIT + +#define __CSG_LOOP(ptr, op_val, op_string) ({ \ + long long old_val, new_val; \ + asm volatile( \ + " lg %0,%2\n" \ + "0: lgr %1,%0\n" \ + op_string " %1,%3\n" \ + " csg %0,%1,%2\n" \ + " jl 0b" \ + : "=&d" (old_val), "=&d" (new_val), \ + "=Q" (((atomic_t *)(ptr))->counter) \ + : "d" (op_val), "Q" (((atomic_t *)(ptr))->counter) \ + : "cc", "memory"); \ + new_val; \ +}) + +static inline long long atomic64_read(const atomic64_t *v) +{ + long long c; + + asm volatile( + " lg %0,%1\n" + : "=d" (c) : "Q" (v->counter)); + return c; +} + +static inline void atomic64_set(atomic64_t *v, long long i) +{ + asm volatile( + " stg %1,%0\n" + : "=Q" (v->counter) : "d" (i)); +} + +static inline long long atomic64_add_return(long long i, atomic64_t *v) +{ + return __CSG_LOOP(v, i, "agr"); +} + +static inline long long atomic64_sub_return(long long i, atomic64_t *v) +{ + return __CSG_LOOP(v, i, "sgr"); +} + +static inline void atomic64_clear_mask(unsigned long mask, atomic64_t *v) +{ + __CSG_LOOP(v, ~mask, "ngr"); +} + +static inline void atomic64_set_mask(unsigned long mask, atomic64_t *v) +{ + __CSG_LOOP(v, mask, "ogr"); +} + +#define atomic64_xchg(v, new) (xchg(&((v)->counter), new)) + +static inline long long atomic64_cmpxchg(atomic64_t *v, + long long old, long long new) +{ + asm volatile( + " csg %0,%2,%1" + : "+d" (old), "=Q" (v->counter) + : "d" (new), "Q" (v->counter) + : "cc", "memory"); + return old; +} + +#undef __CSG_LOOP + +#else /* CONFIG_64BIT */ + +typedef struct { + long long counter; +} atomic64_t; + +static inline long long atomic64_read(const atomic64_t *v) +{ + register_pair rp; + + asm volatile( + " lm %0,%N0,%1" + : "=&d" (rp) : "Q" (v->counter) ); + return rp.pair; +} + +static inline void atomic64_set(atomic64_t *v, long long i) +{ + register_pair rp = {.pair = i}; + + asm volatile( + " stm %1,%N1,%0" + : "=Q" (v->counter) : "d" (rp) ); +} + +static inline long long atomic64_xchg(atomic64_t *v, long long new) +{ + register_pair rp_new = {.pair = new}; + register_pair rp_old; + + asm volatile( + " lm %0,%N0,%1\n" + "0: cds %0,%2,%1\n" + " jl 0b\n" + : "=&d" (rp_old), "=Q" (v->counter) + : "d" (rp_new), "Q" (v->counter) + : "cc"); + return rp_old.pair; +} + +static inline long long atomic64_cmpxchg(atomic64_t *v, + long long old, long long new) +{ + register_pair rp_old = {.pair = old}; + register_pair rp_new = {.pair = new}; + + asm volatile( + " cds %0,%2,%1" + : "+&d" (rp_old), "=Q" (v->counter) + : "d" (rp_new), "Q" (v->counter) + : "cc"); + return rp_old.pair; +} + + +static inline long long atomic64_add_return(long long i, atomic64_t *v) +{ + long long old, new; + + do { + old = atomic64_read(v); + new = old + i; + } while (atomic64_cmpxchg(v, old, new) != old); + return new; +} + +static inline long long atomic64_sub_return(long long i, atomic64_t *v) +{ + long long old, new; + + do { + old = atomic64_read(v); + new = old - i; + } while (atomic64_cmpxchg(v, old, new) != old); + return new; +} + +static inline void atomic64_set_mask(unsigned long long mask, atomic64_t *v) +{ + long long old, new; + + do { + old = atomic64_read(v); + new = old | mask; + } while (atomic64_cmpxchg(v, old, new) != old); +} + +static inline void atomic64_clear_mask(unsigned long long mask, atomic64_t *v) +{ + long long old, new; + + do { + old = atomic64_read(v); + new = old & mask; + } while (atomic64_cmpxchg(v, old, new) != old); +} + +#endif /* CONFIG_64BIT */ + +static inline int atomic64_add_unless(atomic64_t *v, long long a, long long u) +{ + long long c, old; + + c = atomic64_read(v); + for (;;) { + if (unlikely(c == u)) + break; + old = atomic64_cmpxchg(v, c, c + a); + if (likely(old == c)) + break; + c = old; + } + return c != u; +} + +static inline long long atomic64_dec_if_positive(atomic64_t *v) +{ + long long c, old, dec; + + c = atomic64_read(v); + for (;;) { + dec = c - 1; + if (unlikely(dec < 0)) + break; + old = atomic64_cmpxchg((v), c, dec); + if (likely(old == c)) + break; + c = old; + } + return dec; +} + +#define atomic64_add(_i, _v) atomic64_add_return(_i, _v) +#define atomic64_add_negative(_i, _v) (atomic64_add_return(_i, _v) < 0) +#define atomic64_inc(_v) atomic64_add_return(1, _v) +#define atomic64_inc_return(_v) atomic64_add_return(1, _v) +#define atomic64_inc_and_test(_v) (atomic64_add_return(1, _v) == 0) +#define atomic64_sub(_i, _v) atomic64_sub_return(_i, _v) +#define atomic64_sub_and_test(_i, _v) (atomic64_sub_return(_i, _v) == 0) +#define atomic64_dec(_v) atomic64_sub_return(1, _v) +#define atomic64_dec_return(_v) atomic64_sub_return(1, _v) +#define atomic64_dec_and_test(_v) (atomic64_sub_return(1, _v) == 0) +#define atomic64_inc_not_zero(v) atomic64_add_unless((v), 1, 0) + +#define smp_mb__before_atomic_dec() smp_mb() +#define smp_mb__after_atomic_dec() smp_mb() +#define smp_mb__before_atomic_inc() smp_mb() +#define smp_mb__after_atomic_inc() smp_mb() + +#endif /* __ARCH_S390_ATOMIC__ */ diff --git a/arch/s390/include/asm/auxvec.h b/arch/s390/include/asm/auxvec.h new file mode 100644 index 00000000..a1f153e8 --- /dev/null +++ b/arch/s390/include/asm/auxvec.h @@ -0,0 +1,6 @@ +#ifndef __ASMS390_AUXVEC_H +#define __ASMS390_AUXVEC_H + +#define AT_SYSINFO_EHDR 33 + +#endif diff --git a/arch/s390/include/asm/barrier.h b/arch/s390/include/asm/barrier.h new file mode 100644 index 00000000..451273ad --- /dev/null +++ b/arch/s390/include/asm/barrier.h @@ -0,0 +1,35 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_BARRIER_H +#define __ASM_BARRIER_H + +/* + * Force strict CPU ordering. + * And yes, this is required on UP too when we're talking + * to devices. + * + * This is very similar to the ppc eieio/sync instruction in that is + * does a checkpoint syncronisation & makes sure that + * all memory ops have completed wrt other CPU's ( see 7-15 POP DJB ). + */ + +#define eieio() asm volatile("bcr 15,0" : : : "memory") +#define SYNC_OTHER_CORES(x) eieio() +#define mb() eieio() +#define rmb() eieio() +#define wmb() eieio() +#define read_barrier_depends() do { } while(0) +#define smp_mb() mb() +#define smp_rmb() rmb() +#define smp_wmb() wmb() +#define smp_read_barrier_depends() read_barrier_depends() +#define smp_mb__before_clear_bit() smp_mb() +#define smp_mb__after_clear_bit() smp_mb() + +#define set_mb(var, value) do { var = value; mb(); } while (0) + +#endif /* __ASM_BARRIER_H */ diff --git a/arch/s390/include/asm/bitops.h b/arch/s390/include/asm/bitops.h new file mode 100644 index 00000000..e5beb490 --- /dev/null +++ b/arch/s390/include/asm/bitops.h @@ -0,0 +1,840 @@ +#ifndef _S390_BITOPS_H +#define _S390_BITOPS_H + +/* + * include/asm-s390/bitops.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/bitops.h" + * Copyright (C) 1992, Linus Torvalds + * + */ + +#ifdef __KERNEL__ + +#ifndef _LINUX_BITOPS_H +#error only <linux/bitops.h> can be included directly +#endif + +#include <linux/compiler.h> + +/* + * 32 bit bitops format: + * bit 0 is the LSB of *addr; bit 31 is the MSB of *addr; + * bit 32 is the LSB of *(addr+4). That combined with the + * big endian byte order on S390 give the following bit + * order in memory: + * 1f 1e 1d 1c 1b 1a 19 18 17 16 15 14 13 12 11 10 \ + * 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00 + * after that follows the next long with bit numbers + * 3f 3e 3d 3c 3b 3a 39 38 37 36 35 34 33 32 31 30 + * 2f 2e 2d 2c 2b 2a 29 28 27 26 25 24 23 22 21 20 + * The reason for this bit ordering is the fact that + * in the architecture independent code bits operations + * of the form "flags |= (1 << bitnr)" are used INTERMIXED + * with operation of the form "set_bit(bitnr, flags)". + * + * 64 bit bitops format: + * bit 0 is the LSB of *addr; bit 63 is the MSB of *addr; + * bit 64 is the LSB of *(addr+8). That combined with the + * big endian byte order on S390 give the following bit + * order in memory: + * 3f 3e 3d 3c 3b 3a 39 38 37 36 35 34 33 32 31 30 + * 2f 2e 2d 2c 2b 2a 29 28 27 26 25 24 23 22 21 20 + * 1f 1e 1d 1c 1b 1a 19 18 17 16 15 14 13 12 11 10 + * 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00 + * after that follows the next long with bit numbers + * 7f 7e 7d 7c 7b 7a 79 78 77 76 75 74 73 72 71 70 + * 6f 6e 6d 6c 6b 6a 69 68 67 66 65 64 63 62 61 60 + * 5f 5e 5d 5c 5b 5a 59 58 57 56 55 54 53 52 51 50 + * 4f 4e 4d 4c 4b 4a 49 48 47 46 45 44 43 42 41 40 + * The reason for this bit ordering is the fact that + * in the architecture independent code bits operations + * of the form "flags |= (1 << bitnr)" are used INTERMIXED + * with operation of the form "set_bit(bitnr, flags)". + */ + +/* bitmap tables from arch/s390/kernel/bitmap.c */ +extern const char _oi_bitmap[]; +extern const char _ni_bitmap[]; +extern const char _zb_findmap[]; +extern const char _sb_findmap[]; + +#ifndef __s390x__ + +#define __BITOPS_ALIGN 3 +#define __BITOPS_WORDSIZE 32 +#define __BITOPS_OR "or" +#define __BITOPS_AND "nr" +#define __BITOPS_XOR "xr" + +#define __BITOPS_LOOP(__old, __new, __addr, __val, __op_string) \ + asm volatile( \ + " l %0,%2\n" \ + "0: lr %1,%0\n" \ + __op_string " %1,%3\n" \ + " cs %0,%1,%2\n" \ + " jl 0b" \ + : "=&d" (__old), "=&d" (__new), \ + "=Q" (*(unsigned long *) __addr) \ + : "d" (__val), "Q" (*(unsigned long *) __addr) \ + : "cc"); + +#else /* __s390x__ */ + +#define __BITOPS_ALIGN 7 +#define __BITOPS_WORDSIZE 64 +#define __BITOPS_OR "ogr" +#define __BITOPS_AND "ngr" +#define __BITOPS_XOR "xgr" + +#define __BITOPS_LOOP(__old, __new, __addr, __val, __op_string) \ + asm volatile( \ + " lg %0,%2\n" \ + "0: lgr %1,%0\n" \ + __op_string " %1,%3\n" \ + " csg %0,%1,%2\n" \ + " jl 0b" \ + : "=&d" (__old), "=&d" (__new), \ + "=Q" (*(unsigned long *) __addr) \ + : "d" (__val), "Q" (*(unsigned long *) __addr) \ + : "cc"); + +#endif /* __s390x__ */ + +#define __BITOPS_WORDS(bits) (((bits)+__BITOPS_WORDSIZE-1)/__BITOPS_WORDSIZE) +#define __BITOPS_BARRIER() asm volatile("" : : : "memory") + +#ifdef CONFIG_SMP +/* + * SMP safe set_bit routine based on compare and swap (CS) + */ +static inline void set_bit_cs(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr, old, new, mask; + + addr = (unsigned long) ptr; + /* calculate address for CS */ + addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3; + /* make OR mask */ + mask = 1UL << (nr & (__BITOPS_WORDSIZE - 1)); + /* Do the atomic update. */ + __BITOPS_LOOP(old, new, addr, mask, __BITOPS_OR); +} + +/* + * SMP safe clear_bit routine based on compare and swap (CS) + */ +static inline void clear_bit_cs(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr, old, new, mask; + + addr = (unsigned long) ptr; + /* calculate address for CS */ + addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3; + /* make AND mask */ + mask = ~(1UL << (nr & (__BITOPS_WORDSIZE - 1))); + /* Do the atomic update. */ + __BITOPS_LOOP(old, new, addr, mask, __BITOPS_AND); +} + +/* + * SMP safe change_bit routine based on compare and swap (CS) + */ +static inline void change_bit_cs(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr, old, new, mask; + + addr = (unsigned long) ptr; + /* calculate address for CS */ + addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3; + /* make XOR mask */ + mask = 1UL << (nr & (__BITOPS_WORDSIZE - 1)); + /* Do the atomic update. */ + __BITOPS_LOOP(old, new, addr, mask, __BITOPS_XOR); +} + +/* + * SMP safe test_and_set_bit routine based on compare and swap (CS) + */ +static inline int +test_and_set_bit_cs(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr, old, new, mask; + + addr = (unsigned long) ptr; + /* calculate address for CS */ + addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3; + /* make OR/test mask */ + mask = 1UL << (nr & (__BITOPS_WORDSIZE - 1)); + /* Do the atomic update. */ + __BITOPS_LOOP(old, new, addr, mask, __BITOPS_OR); + __BITOPS_BARRIER(); + return (old & mask) != 0; +} + +/* + * SMP safe test_and_clear_bit routine based on compare and swap (CS) + */ +static inline int +test_and_clear_bit_cs(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr, old, new, mask; + + addr = (unsigned long) ptr; + /* calculate address for CS */ + addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3; + /* make AND/test mask */ + mask = ~(1UL << (nr & (__BITOPS_WORDSIZE - 1))); + /* Do the atomic update. */ + __BITOPS_LOOP(old, new, addr, mask, __BITOPS_AND); + __BITOPS_BARRIER(); + return (old ^ new) != 0; +} + +/* + * SMP safe test_and_change_bit routine based on compare and swap (CS) + */ +static inline int +test_and_change_bit_cs(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr, old, new, mask; + + addr = (unsigned long) ptr; + /* calculate address for CS */ + addr += (nr ^ (nr & (__BITOPS_WORDSIZE - 1))) >> 3; + /* make XOR/test mask */ + mask = 1UL << (nr & (__BITOPS_WORDSIZE - 1)); + /* Do the atomic update. */ + __BITOPS_LOOP(old, new, addr, mask, __BITOPS_XOR); + __BITOPS_BARRIER(); + return (old & mask) != 0; +} +#endif /* CONFIG_SMP */ + +/* + * fast, non-SMP set_bit routine + */ +static inline void __set_bit(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + + addr = (unsigned long) ptr + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + asm volatile( + " oc %O0(1,%R0),%1" + : "=Q" (*(char *) addr) : "Q" (_oi_bitmap[nr & 7]) : "cc" ); +} + +static inline void +__constant_set_bit(const unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + + addr = ((unsigned long) ptr) + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + *(unsigned char *) addr |= 1 << (nr & 7); +} + +#define set_bit_simple(nr,addr) \ +(__builtin_constant_p((nr)) ? \ + __constant_set_bit((nr),(addr)) : \ + __set_bit((nr),(addr)) ) + +/* + * fast, non-SMP clear_bit routine + */ +static inline void +__clear_bit(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + + addr = (unsigned long) ptr + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + asm volatile( + " nc %O0(1,%R0),%1" + : "=Q" (*(char *) addr) : "Q" (_ni_bitmap[nr & 7]) : "cc" ); +} + +static inline void +__constant_clear_bit(const unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + + addr = ((unsigned long) ptr) + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + *(unsigned char *) addr &= ~(1 << (nr & 7)); +} + +#define clear_bit_simple(nr,addr) \ +(__builtin_constant_p((nr)) ? \ + __constant_clear_bit((nr),(addr)) : \ + __clear_bit((nr),(addr)) ) + +/* + * fast, non-SMP change_bit routine + */ +static inline void __change_bit(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + + addr = (unsigned long) ptr + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + asm volatile( + " xc %O0(1,%R0),%1" + : "=Q" (*(char *) addr) : "Q" (_oi_bitmap[nr & 7]) : "cc" ); +} + +static inline void +__constant_change_bit(const unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + + addr = ((unsigned long) ptr) + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + *(unsigned char *) addr ^= 1 << (nr & 7); +} + +#define change_bit_simple(nr,addr) \ +(__builtin_constant_p((nr)) ? \ + __constant_change_bit((nr),(addr)) : \ + __change_bit((nr),(addr)) ) + +/* + * fast, non-SMP test_and_set_bit routine + */ +static inline int +test_and_set_bit_simple(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + unsigned char ch; + + addr = (unsigned long) ptr + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + ch = *(unsigned char *) addr; + asm volatile( + " oc %O0(1,%R0),%1" + : "=Q" (*(char *) addr) : "Q" (_oi_bitmap[nr & 7]) + : "cc", "memory"); + return (ch >> (nr & 7)) & 1; +} +#define __test_and_set_bit(X,Y) test_and_set_bit_simple(X,Y) + +/* + * fast, non-SMP test_and_clear_bit routine + */ +static inline int +test_and_clear_bit_simple(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + unsigned char ch; + + addr = (unsigned long) ptr + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + ch = *(unsigned char *) addr; + asm volatile( + " nc %O0(1,%R0),%1" + : "=Q" (*(char *) addr) : "Q" (_ni_bitmap[nr & 7]) + : "cc", "memory"); + return (ch >> (nr & 7)) & 1; +} +#define __test_and_clear_bit(X,Y) test_and_clear_bit_simple(X,Y) + +/* + * fast, non-SMP test_and_change_bit routine + */ +static inline int +test_and_change_bit_simple(unsigned long nr, volatile unsigned long *ptr) +{ + unsigned long addr; + unsigned char ch; + + addr = (unsigned long) ptr + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + ch = *(unsigned char *) addr; + asm volatile( + " xc %O0(1,%R0),%1" + : "=Q" (*(char *) addr) : "Q" (_oi_bitmap[nr & 7]) + : "cc", "memory"); + return (ch >> (nr & 7)) & 1; +} +#define __test_and_change_bit(X,Y) test_and_change_bit_simple(X,Y) + +#ifdef CONFIG_SMP +#define set_bit set_bit_cs +#define clear_bit clear_bit_cs +#define change_bit change_bit_cs +#define test_and_set_bit test_and_set_bit_cs +#define test_and_clear_bit test_and_clear_bit_cs +#define test_and_change_bit test_and_change_bit_cs +#else +#define set_bit set_bit_simple +#define clear_bit clear_bit_simple +#define change_bit change_bit_simple +#define test_and_set_bit test_and_set_bit_simple +#define test_and_clear_bit test_and_clear_bit_simple +#define test_and_change_bit test_and_change_bit_simple +#endif + + +/* + * This routine doesn't need to be atomic. + */ + +static inline int __test_bit(unsigned long nr, const volatile unsigned long *ptr) +{ + unsigned long addr; + unsigned char ch; + + addr = (unsigned long) ptr + ((nr ^ (__BITOPS_WORDSIZE - 8)) >> 3); + ch = *(volatile unsigned char *) addr; + return (ch >> (nr & 7)) & 1; +} + +static inline int +__constant_test_bit(unsigned long nr, const volatile unsigned long *addr) { + return (((volatile char *) addr) + [(nr^(__BITOPS_WORDSIZE-8))>>3] & (1<<(nr&7))) != 0; +} + +#define test_bit(nr,addr) \ +(__builtin_constant_p((nr)) ? \ + __constant_test_bit((nr),(addr)) : \ + __test_bit((nr),(addr)) ) + +/* + * Optimized find bit helper functions. + */ + +/** + * __ffz_word_loop - find byte offset of first long != -1UL + * @addr: pointer to array of unsigned long + * @size: size of the array in bits + */ +static inline unsigned long __ffz_word_loop(const unsigned long *addr, + unsigned long size) +{ + typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype; + unsigned long bytes = 0; + + asm volatile( +#ifndef __s390x__ + " ahi %1,-1\n" + " sra %1,5\n" + " jz 1f\n" + "0: c %2,0(%0,%3)\n" + " jne 1f\n" + " la %0,4(%0)\n" + " brct %1,0b\n" + "1:\n" +#else + " aghi %1,-1\n" + " srag %1,%1,6\n" + " jz 1f\n" + "0: cg %2,0(%0,%3)\n" + " jne 1f\n" + " la %0,8(%0)\n" + " brct %1,0b\n" + "1:\n" +#endif + : "+&a" (bytes), "+&d" (size) + : "d" (-1UL), "a" (addr), "m" (*(addrtype *) addr) + : "cc" ); + return bytes; +} + +/** + * __ffs_word_loop - find byte offset of first long != 0UL + * @addr: pointer to array of unsigned long + * @size: size of the array in bits + */ +static inline unsigned long __ffs_word_loop(const unsigned long *addr, + unsigned long size) +{ + typedef struct { long _[__BITOPS_WORDS(size)]; } addrtype; + unsigned long bytes = 0; + + asm volatile( +#ifndef __s390x__ + " ahi %1,-1\n" + " sra %1,5\n" + " jz 1f\n" + "0: c %2,0(%0,%3)\n" + " jne 1f\n" + " la %0,4(%0)\n" + " brct %1,0b\n" + "1:\n" +#else + " aghi %1,-1\n" + " srag %1,%1,6\n" + " jz 1f\n" + "0: cg %2,0(%0,%3)\n" + " jne 1f\n" + " la %0,8(%0)\n" + " brct %1,0b\n" + "1:\n" +#endif + : "+&a" (bytes), "+&a" (size) + : "d" (0UL), "a" (addr), "m" (*(addrtype *) addr) + : "cc" ); + return bytes; +} + +/** + * __ffz_word - add number of the first unset bit + * @nr: base value the bit number is added to + * @word: the word that is searched for unset bits + */ +static inline unsigned long __ffz_word(unsigned long nr, unsigned long word) +{ +#ifdef __s390x__ + if ((word & 0xffffffff) == 0xffffffff) { + word >>= 32; + nr += 32; + } +#endif + if ((word & 0xffff) == 0xffff) { + word >>= 16; + nr += 16; + } + if ((word & 0xff) == 0xff) { + word >>= 8; + nr += 8; + } + return nr + _zb_findmap[(unsigned char) word]; +} + +/** + * __ffs_word - add number of the first set bit + * @nr: base value the bit number is added to + * @word: the word that is searched for set bits + */ +static inline unsigned long __ffs_word(unsigned long nr, unsigned long word) +{ +#ifdef __s390x__ + if ((word & 0xffffffff) == 0) { + word >>= 32; + nr += 32; + } +#endif + if ((word & 0xffff) == 0) { + word >>= 16; + nr += 16; + } + if ((word & 0xff) == 0) { + word >>= 8; + nr += 8; + } + return nr + _sb_findmap[(unsigned char) word]; +} + + +/** + * __load_ulong_be - load big endian unsigned long + * @p: pointer to array of unsigned long + * @offset: byte offset of source value in the array + */ +static inline unsigned long __load_ulong_be(const unsigned long *p, + unsigned long offset) +{ + p = (unsigned long *)((unsigned long) p + offset); + return *p; +} + +/** + * __load_ulong_le - load little endian unsigned long + * @p: pointer to array of unsigned long + * @offset: byte offset of source value in the array + */ +static inline unsigned long __load_ulong_le(const unsigned long *p, + unsigned long offset) +{ + unsigned long word; + + p = (unsigned long *)((unsigned long) p + offset); +#ifndef __s390x__ + asm volatile( + " ic %0,%O1(%R1)\n" + " icm %0,2,%O1+1(%R1)\n" + " icm %0,4,%O1+2(%R1)\n" + " icm %0,8,%O1+3(%R1)" + : "=&d" (word) : "Q" (*p) : "cc"); +#else + asm volatile( + " lrvg %0,%1" + : "=d" (word) : "m" (*p) ); +#endif + return word; +} + +/* + * The various find bit functions. + */ + +/* + * ffz - find first zero in word. + * @word: The word to search + * + * Undefined if no zero exists, so code should check against ~0UL first. + */ +static inline unsigned long ffz(unsigned long word) +{ + return __ffz_word(0, word); +} + +/** + * __ffs - find first bit in word. + * @word: The word to search + * + * Undefined if no bit exists, so code should check against 0 first. + */ +static inline unsigned long __ffs (unsigned long word) +{ + return __ffs_word(0, word); +} + +/** + * ffs - find first bit set + * @x: the word to search + * + * This is defined the same way as + * the libc and compiler builtin ffs routines, therefore + * differs in spirit from the above ffz (man ffs). + */ +static inline int ffs(int x) +{ + if (!x) + return 0; + return __ffs_word(1, x); +} + +/** + * find_first_zero_bit - find the first zero bit in a memory region + * @addr: The address to start the search at + * @size: The maximum size to search + * + * Returns the bit-number of the first zero bit, not the number of the byte + * containing a bit. + */ +static inline unsigned long find_first_zero_bit(const unsigned long *addr, + unsigned long size) +{ + unsigned long bytes, bits; + + if (!size) + return 0; + bytes = __ffz_word_loop(addr, size); + bits = __ffz_word(bytes*8, __load_ulong_be(addr, bytes)); + return (bits < size) ? bits : size; +} +#define find_first_zero_bit find_first_zero_bit + +/** + * find_first_bit - find the first set bit in a memory region + * @addr: The address to start the search at + * @size: The maximum size to search + * + * Returns the bit-number of the first set bit, not the number of the byte + * containing a bit. + */ +static inline unsigned long find_first_bit(const unsigned long * addr, + unsigned long size) +{ + unsigned long bytes, bits; + + if (!size) + return 0; + bytes = __ffs_word_loop(addr, size); + bits = __ffs_word(bytes*8, __load_ulong_be(addr, bytes)); + return (bits < size) ? bits : size; +} +#define find_first_bit find_first_bit + +/** + * find_next_zero_bit - find the first zero bit in a memory region + * @addr: The address to base the search on + * @offset: The bitnumber to start searching at + * @size: The maximum size to search + */ +static inline int find_next_zero_bit (const unsigned long * addr, + unsigned long size, + unsigned long offset) +{ + const unsigned long *p; + unsigned long bit, set; + + if (offset >= size) + return size; + bit = offset & (__BITOPS_WORDSIZE - 1); + offset -= bit; + size -= offset; + p = addr + offset / __BITOPS_WORDSIZE; + if (bit) { + /* + * __ffz_word returns __BITOPS_WORDSIZE + * if no zero bit is present in the word. + */ + set = __ffz_word(bit, *p >> bit); + if (set >= size) + return size + offset; + if (set < __BITOPS_WORDSIZE) + return set + offset; + offset += __BITOPS_WORDSIZE; + size -= __BITOPS_WORDSIZE; + p++; + } + return offset + find_first_zero_bit(p, size); +} +#define find_next_zero_bit find_next_zero_bit + +/** + * find_next_bit - find the first set bit in a memory region + * @addr: The address to base the search on + * @offset: The bitnumber to start searching at + * @size: The maximum size to search + */ +static inline int find_next_bit (const unsigned long * addr, + unsigned long size, + unsigned long offset) +{ + const unsigned long *p; + unsigned long bit, set; + + if (offset >= size) + return size; + bit = offset & (__BITOPS_WORDSIZE - 1); + offset -= bit; + size -= offset; + p = addr + offset / __BITOPS_WORDSIZE; + if (bit) { + /* + * __ffs_word returns __BITOPS_WORDSIZE + * if no one bit is present in the word. + */ + set = __ffs_word(0, *p & (~0UL << bit)); + if (set >= size) + return size + offset; + if (set < __BITOPS_WORDSIZE) + return set + offset; + offset += __BITOPS_WORDSIZE; + size -= __BITOPS_WORDSIZE; + p++; + } + return offset + find_first_bit(p, size); +} +#define find_next_bit find_next_bit + +/* + * Every architecture must define this function. It's the fastest + * way of searching a 140-bit bitmap where the first 100 bits are + * unlikely to be set. It's guaranteed that at least one of the 140 + * bits is cleared. + */ +static inline int sched_find_first_bit(unsigned long *b) +{ + return find_first_bit(b, 140); +} + +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> +#include <asm-generic/bitops/fls64.h> + +#include <asm-generic/bitops/hweight.h> +#include <asm-generic/bitops/lock.h> + +/* + * ATTENTION: intel byte ordering convention for ext2 and minix !! + * bit 0 is the LSB of addr; bit 31 is the MSB of addr; + * bit 32 is the LSB of (addr+4). + * That combined with the little endian byte order of Intel gives the + * following bit order in memory: + * 07 06 05 04 03 02 01 00 15 14 13 12 11 10 09 08 \ + * 23 22 21 20 19 18 17 16 31 30 29 28 27 26 25 24 + */ + +static inline int find_first_zero_bit_le(void *vaddr, unsigned int size) +{ + unsigned long bytes, bits; + + if (!size) + return 0; + bytes = __ffz_word_loop(vaddr, size); + bits = __ffz_word(bytes*8, __load_ulong_le(vaddr, bytes)); + return (bits < size) ? bits : size; +} +#define find_first_zero_bit_le find_first_zero_bit_le + +static inline int find_next_zero_bit_le(void *vaddr, unsigned long size, + unsigned long offset) +{ + unsigned long *addr = vaddr, *p; + unsigned long bit, set; + + if (offset >= size) + return size; + bit = offset & (__BITOPS_WORDSIZE - 1); + offset -= bit; + size -= offset; + p = addr + offset / __BITOPS_WORDSIZE; + if (bit) { + /* + * s390 version of ffz returns __BITOPS_WORDSIZE + * if no zero bit is present in the word. + */ + set = __ffz_word(bit, __load_ulong_le(p, 0) >> bit); + if (set >= size) + return size + offset; + if (set < __BITOPS_WORDSIZE) + return set + offset; + offset += __BITOPS_WORDSIZE; + size -= __BITOPS_WORDSIZE; + p++; + } + return offset + find_first_zero_bit_le(p, size); +} +#define find_next_zero_bit_le find_next_zero_bit_le + +static inline unsigned long find_first_bit_le(void *vaddr, unsigned long size) +{ + unsigned long bytes, bits; + + if (!size) + return 0; + bytes = __ffs_word_loop(vaddr, size); + bits = __ffs_word(bytes*8, __load_ulong_le(vaddr, bytes)); + return (bits < size) ? bits : size; +} +#define find_first_bit_le find_first_bit_le + +static inline int find_next_bit_le(void *vaddr, unsigned long size, + unsigned long offset) +{ + unsigned long *addr = vaddr, *p; + unsigned long bit, set; + + if (offset >= size) + return size; + bit = offset & (__BITOPS_WORDSIZE - 1); + offset -= bit; + size -= offset; + p = addr + offset / __BITOPS_WORDSIZE; + if (bit) { + /* + * s390 version of ffz returns __BITOPS_WORDSIZE + * if no zero bit is present in the word. + */ + set = __ffs_word(0, __load_ulong_le(p, 0) & (~0UL << bit)); + if (set >= size) + return size + offset; + if (set < __BITOPS_WORDSIZE) + return set + offset; + offset += __BITOPS_WORDSIZE; + size -= __BITOPS_WORDSIZE; + p++; + } + return offset + find_first_bit_le(p, size); +} +#define find_next_bit_le find_next_bit_le + +#include <asm-generic/bitops/le.h> + +#include <asm-generic/bitops/ext2-atomic-setbit.h> + + +#endif /* __KERNEL__ */ + +#endif /* _S390_BITOPS_H */ diff --git a/arch/s390/include/asm/bitsperlong.h b/arch/s390/include/asm/bitsperlong.h new file mode 100644 index 00000000..6b235aea --- /dev/null +++ b/arch/s390/include/asm/bitsperlong.h @@ -0,0 +1,13 @@ +#ifndef __ASM_S390_BITSPERLONG_H +#define __ASM_S390_BITSPERLONG_H + +#ifndef __s390x__ +#define __BITS_PER_LONG 32 +#else +#define __BITS_PER_LONG 64 +#endif + +#include <asm-generic/bitsperlong.h> + +#endif /* __ASM_S390_BITSPERLONG_H */ + diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h new file mode 100644 index 00000000..bf90d1fd --- /dev/null +++ b/arch/s390/include/asm/bug.h @@ -0,0 +1,71 @@ +#ifndef _ASM_S390_BUG_H +#define _ASM_S390_BUG_H + +#include <linux/kernel.h> + +#ifdef CONFIG_BUG + +#ifdef CONFIG_DEBUG_BUGVERBOSE + +#define __EMIT_BUG(x) do { \ + asm volatile( \ + "0: j 0b+2\n" \ + "1:\n" \ + ".section .rodata.str,\"aMS\",@progbits,1\n" \ + "2: .asciz \""__FILE__"\"\n" \ + ".previous\n" \ + ".section __bug_table,\"a\"\n" \ + "3: .long 1b-3b,2b-3b\n" \ + " .short %0,%1\n" \ + " .org 3b+%2\n" \ + ".previous\n" \ + : : "i" (__LINE__), \ + "i" (x), \ + "i" (sizeof(struct bug_entry))); \ +} while (0) + +#else /* CONFIG_DEBUG_BUGVERBOSE */ + +#define __EMIT_BUG(x) do { \ + asm volatile( \ + "0: j 0b+2\n" \ + "1:\n" \ + ".section __bug_table,\"a\"\n" \ + "2: .long 1b-2b\n" \ + " .short %0\n" \ + " .org 2b+%1\n" \ + ".previous\n" \ + : : "i" (x), \ + "i" (sizeof(struct bug_entry))); \ +} while (0) + +#endif /* CONFIG_DEBUG_BUGVERBOSE */ + +#define BUG() do { \ + __EMIT_BUG(0); \ + unreachable(); \ +} while (0) + +#define __WARN_TAINT(taint) do { \ + __EMIT_BUG(BUGFLAG_TAINT(taint)); \ +} while (0) + +#define WARN_ON(x) ({ \ + int __ret_warn_on = !!(x); \ + if (__builtin_constant_p(__ret_warn_on)) { \ + if (__ret_warn_on) \ + __WARN(); \ + } else { \ + if (unlikely(__ret_warn_on)) \ + __WARN(); \ + } \ + unlikely(__ret_warn_on); \ +}) + +#define HAVE_ARCH_BUG +#define HAVE_ARCH_WARN_ON +#endif /* CONFIG_BUG */ + +#include <asm-generic/bug.h> + +#endif /* _ASM_S390_BUG_H */ diff --git a/arch/s390/include/asm/bugs.h b/arch/s390/include/asm/bugs.h new file mode 100644 index 00000000..011f1e6a --- /dev/null +++ b/arch/s390/include/asm/bugs.h @@ -0,0 +1,22 @@ +/* + * include/asm-s390/bugs.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/bugs.h" + * Copyright (C) 1994 Linus Torvalds + */ + +/* + * This is included by init/main.c to check for architecture-dependent bugs. + * + * Needs: + * void check_bugs(void); + */ + +static inline void check_bugs(void) +{ + /* s390 has no bugs ... */ +} diff --git a/arch/s390/include/asm/byteorder.h b/arch/s390/include/asm/byteorder.h new file mode 100644 index 00000000..a332e59e --- /dev/null +++ b/arch/s390/include/asm/byteorder.h @@ -0,0 +1,6 @@ +#ifndef _S390_BYTEORDER_H +#define _S390_BYTEORDER_H + +#include <linux/byteorder/big_endian.h> + +#endif /* _S390_BYTEORDER_H */ diff --git a/arch/s390/include/asm/cache.h b/arch/s390/include/asm/cache.h new file mode 100644 index 00000000..2a30d5ac --- /dev/null +++ b/arch/s390/include/asm/cache.h @@ -0,0 +1,20 @@ +/* + * include/asm-s390/cache.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * + * Derived from "include/asm-i386/cache.h" + * Copyright (C) 1992, Linus Torvalds + */ + +#ifndef __ARCH_S390_CACHE_H +#define __ARCH_S390_CACHE_H + +#define L1_CACHE_BYTES 256 +#define L1_CACHE_SHIFT 8 +#define NET_SKB_PAD 32 + +#define __read_mostly __attribute__((__section__(".data..read_mostly"))) + +#endif diff --git a/arch/s390/include/asm/cacheflush.h b/arch/s390/include/asm/cacheflush.h new file mode 100644 index 00000000..3e20383d --- /dev/null +++ b/arch/s390/include/asm/cacheflush.h @@ -0,0 +1,16 @@ +#ifndef _S390_CACHEFLUSH_H +#define _S390_CACHEFLUSH_H + +/* Caches aren't brain-dead on the s390. */ +#include <asm-generic/cacheflush.h> + +#ifdef CONFIG_DEBUG_PAGEALLOC +void kernel_map_pages(struct page *page, int numpages, int enable); +#endif + +int set_memory_ro(unsigned long addr, int numpages); +int set_memory_rw(unsigned long addr, int numpages); +int set_memory_nx(unsigned long addr, int numpages); +int set_memory_x(unsigned long addr, int numpages); + +#endif /* _S390_CACHEFLUSH_H */ diff --git a/arch/s390/include/asm/ccwdev.h b/arch/s390/include/asm/ccwdev.h new file mode 100644 index 00000000..9381c92c --- /dev/null +++ b/arch/s390/include/asm/ccwdev.h @@ -0,0 +1,230 @@ +/* + * Copyright IBM Corp. 2002, 2009 + * + * Author(s): Arnd Bergmann <arndb@de.ibm.com> + * + * Interface for CCW device drivers + */ +#ifndef _S390_CCWDEV_H_ +#define _S390_CCWDEV_H_ + +#include <linux/device.h> +#include <linux/mod_devicetable.h> +#include <asm/fcx.h> +#include <asm/irq.h> + +/* structs from asm/cio.h */ +struct irb; +struct ccw1; +struct ccw_dev_id; + +/* simplified initializers for struct ccw_device: + * CCW_DEVICE and CCW_DEVICE_DEVTYPE initialize one + * entry in your MODULE_DEVICE_TABLE and set the match_flag correctly */ +#define CCW_DEVICE(cu, cum) \ + .cu_type=(cu), .cu_model=(cum), \ + .match_flags=(CCW_DEVICE_ID_MATCH_CU_TYPE \ + | (cum ? CCW_DEVICE_ID_MATCH_CU_MODEL : 0)) + +#define CCW_DEVICE_DEVTYPE(cu, cum, dev, devm) \ + .cu_type=(cu), .cu_model=(cum), .dev_type=(dev), .dev_model=(devm),\ + .match_flags=CCW_DEVICE_ID_MATCH_CU_TYPE \ + | ((cum) ? CCW_DEVICE_ID_MATCH_CU_MODEL : 0) \ + | CCW_DEVICE_ID_MATCH_DEVICE_TYPE \ + | ((devm) ? CCW_DEVICE_ID_MATCH_DEVICE_MODEL : 0) + +/* scan through an array of device ids and return the first + * entry that matches the device. + * + * the array must end with an entry containing zero match_flags + */ +static inline const struct ccw_device_id * +ccw_device_id_match(const struct ccw_device_id *array, + const struct ccw_device_id *match) +{ + const struct ccw_device_id *id = array; + + for (id = array; id->match_flags; id++) { + if ((id->match_flags & CCW_DEVICE_ID_MATCH_CU_TYPE) + && (id->cu_type != match->cu_type)) + continue; + + if ((id->match_flags & CCW_DEVICE_ID_MATCH_CU_MODEL) + && (id->cu_model != match->cu_model)) + continue; + + if ((id->match_flags & CCW_DEVICE_ID_MATCH_DEVICE_TYPE) + && (id->dev_type != match->dev_type)) + continue; + + if ((id->match_flags & CCW_DEVICE_ID_MATCH_DEVICE_MODEL) + && (id->dev_model != match->dev_model)) + continue; + + return id; + } + + return NULL; +} + +/** + * struct ccw_device - channel attached device + * @ccwlock: pointer to device lock + * @id: id of this device + * @drv: ccw driver for this device + * @dev: embedded device structure + * @online: online status of device + * @handler: interrupt handler + * + * @handler is a member of the device rather than the driver since a driver + * can have different interrupt handlers for different ccw devices + * (multi-subchannel drivers). + */ +struct ccw_device { + spinlock_t *ccwlock; +/* private: */ + struct ccw_device_private *private; /* cio private information */ +/* public: */ + struct ccw_device_id id; + struct ccw_driver *drv; + struct device dev; + int online; + void (*handler) (struct ccw_device *, unsigned long, struct irb *); +}; + +/* + * Possible events used by the path_event notifier. + */ +#define PE_NONE 0x0 +#define PE_PATH_GONE 0x1 /* A path is no longer available. */ +#define PE_PATH_AVAILABLE 0x2 /* A path has become available and + was successfully verified. */ +#define PE_PATHGROUP_ESTABLISHED 0x4 /* A pathgroup was reset and had + to be established again. */ + +/* + * Possible CIO actions triggered by the unit check handler. + */ +enum uc_todo { + UC_TODO_RETRY, + UC_TODO_RETRY_ON_NEW_PATH, + UC_TODO_STOP +}; + +/** + * struct ccw driver - device driver for channel attached devices + * @ids: ids supported by this driver + * @probe: function called on probe + * @remove: function called on remove + * @set_online: called when setting device online + * @set_offline: called when setting device offline + * @notify: notify driver of device state changes + * @path_event: notify driver of channel path events + * @shutdown: called at device shutdown + * @prepare: prepare for pm state transition + * @complete: undo work done in @prepare + * @freeze: callback for freezing during hibernation snapshotting + * @thaw: undo work done in @freeze + * @restore: callback for restoring after hibernation + * @uc_handler: callback for unit check handler + * @driver: embedded device driver structure + * @int_class: interruption class to use for accounting interrupts + */ +struct ccw_driver { + struct ccw_device_id *ids; + int (*probe) (struct ccw_device *); + void (*remove) (struct ccw_device *); + int (*set_online) (struct ccw_device *); + int (*set_offline) (struct ccw_device *); + int (*notify) (struct ccw_device *, int); + void (*path_event) (struct ccw_device *, int *); + void (*shutdown) (struct ccw_device *); + int (*prepare) (struct ccw_device *); + void (*complete) (struct ccw_device *); + int (*freeze)(struct ccw_device *); + int (*thaw) (struct ccw_device *); + int (*restore)(struct ccw_device *); + enum uc_todo (*uc_handler) (struct ccw_device *, struct irb *); + struct device_driver driver; + enum interruption_class int_class; +}; + +extern struct ccw_device *get_ccwdev_by_busid(struct ccw_driver *cdrv, + const char *bus_id); + +/* devices drivers call these during module load and unload. + * When a driver is registered, its probe method is called + * when new devices for its type pop up */ +extern int ccw_driver_register (struct ccw_driver *driver); +extern void ccw_driver_unregister (struct ccw_driver *driver); + +struct ccw1; + +extern int ccw_device_set_options_mask(struct ccw_device *, unsigned long); +extern int ccw_device_set_options(struct ccw_device *, unsigned long); +extern void ccw_device_clear_options(struct ccw_device *, unsigned long); +int ccw_device_is_pathgroup(struct ccw_device *cdev); +int ccw_device_is_multipath(struct ccw_device *cdev); + +/* Allow for i/o completion notification after primary interrupt status. */ +#define CCWDEV_EARLY_NOTIFICATION 0x0001 +/* Report all interrupt conditions. */ +#define CCWDEV_REPORT_ALL 0x0002 +/* Try to perform path grouping. */ +#define CCWDEV_DO_PATHGROUP 0x0004 +/* Allow forced onlining of boxed devices. */ +#define CCWDEV_ALLOW_FORCE 0x0008 +/* Try to use multipath mode. */ +#define CCWDEV_DO_MULTIPATH 0x0010 + +extern int ccw_device_start(struct ccw_device *, struct ccw1 *, + unsigned long, __u8, unsigned long); +extern int ccw_device_start_timeout(struct ccw_device *, struct ccw1 *, + unsigned long, __u8, unsigned long, int); +extern int ccw_device_start_key(struct ccw_device *, struct ccw1 *, + unsigned long, __u8, __u8, unsigned long); +extern int ccw_device_start_timeout_key(struct ccw_device *, struct ccw1 *, + unsigned long, __u8, __u8, + unsigned long, int); + + +extern int ccw_device_resume(struct ccw_device *); +extern int ccw_device_halt(struct ccw_device *, unsigned long); +extern int ccw_device_clear(struct ccw_device *, unsigned long); +int ccw_device_tm_start_key(struct ccw_device *cdev, struct tcw *tcw, + unsigned long intparm, u8 lpm, u8 key); +int ccw_device_tm_start_key(struct ccw_device *, struct tcw *, + unsigned long, u8, u8); +int ccw_device_tm_start_timeout_key(struct ccw_device *, struct tcw *, + unsigned long, u8, u8, int); +int ccw_device_tm_start(struct ccw_device *, struct tcw *, + unsigned long, u8); +int ccw_device_tm_start_timeout(struct ccw_device *, struct tcw *, + unsigned long, u8, int); +int ccw_device_tm_intrg(struct ccw_device *cdev); + +int ccw_device_get_mdc(struct ccw_device *cdev, u8 mask); + +extern int ccw_device_set_online(struct ccw_device *cdev); +extern int ccw_device_set_offline(struct ccw_device *cdev); + + +extern struct ciw *ccw_device_get_ciw(struct ccw_device *, __u32 cmd); +extern __u8 ccw_device_get_path_mask(struct ccw_device *); +extern void ccw_device_get_id(struct ccw_device *, struct ccw_dev_id *); + +#define get_ccwdev_lock(x) (x)->ccwlock + +#define to_ccwdev(n) container_of(n, struct ccw_device, dev) +#define to_ccwdrv(n) container_of(n, struct ccw_driver, driver) + +extern struct ccw_device *ccw_device_probe_console(void); +extern int ccw_device_force_console(void); + +int ccw_device_siosl(struct ccw_device *); + +// FIXME: these have to go +extern int _ccw_device_get_subchannel_number(struct ccw_device *); + +extern void *ccw_device_get_chp_desc(struct ccw_device *, int); +#endif /* _S390_CCWDEV_H_ */ diff --git a/arch/s390/include/asm/ccwgroup.h b/arch/s390/include/asm/ccwgroup.h new file mode 100644 index 00000000..f2ea2c56 --- /dev/null +++ b/arch/s390/include/asm/ccwgroup.h @@ -0,0 +1,75 @@ +#ifndef S390_CCWGROUP_H +#define S390_CCWGROUP_H + +struct ccw_device; +struct ccw_driver; + +/** + * struct ccwgroup_device - ccw group device + * @creator_id: unique number of the driver + * @state: online/offline state + * @count: number of attached slave devices + * @dev: embedded device structure + * @cdev: variable number of slave devices, allocated as needed + */ +struct ccwgroup_device { + unsigned long creator_id; + enum { + CCWGROUP_OFFLINE, + CCWGROUP_ONLINE, + } state; +/* private: */ + atomic_t onoff; + struct mutex reg_mutex; +/* public: */ + unsigned int count; + struct device dev; + struct ccw_device *cdev[0]; +}; + +/** + * struct ccwgroup_driver - driver for ccw group devices + * @max_slaves: maximum number of slave devices + * @driver_id: unique id + * @probe: function called on probe + * @remove: function called on remove + * @set_online: function called when device is set online + * @set_offline: function called when device is set offline + * @shutdown: function called when device is shut down + * @prepare: prepare for pm state transition + * @complete: undo work done in @prepare + * @freeze: callback for freezing during hibernation snapshotting + * @thaw: undo work done in @freeze + * @restore: callback for restoring after hibernation + * @driver: embedded driver structure + */ +struct ccwgroup_driver { + int max_slaves; + unsigned long driver_id; + + int (*probe) (struct ccwgroup_device *); + void (*remove) (struct ccwgroup_device *); + int (*set_online) (struct ccwgroup_device *); + int (*set_offline) (struct ccwgroup_device *); + void (*shutdown)(struct ccwgroup_device *); + int (*prepare) (struct ccwgroup_device *); + void (*complete) (struct ccwgroup_device *); + int (*freeze)(struct ccwgroup_device *); + int (*thaw) (struct ccwgroup_device *); + int (*restore)(struct ccwgroup_device *); + + struct device_driver driver; +}; + +extern int ccwgroup_driver_register (struct ccwgroup_driver *cdriver); +extern void ccwgroup_driver_unregister (struct ccwgroup_driver *cdriver); +int ccwgroup_create_from_string(struct device *root, unsigned int creator_id, + struct ccw_driver *cdrv, int num_devices, + const char *buf); + +extern int ccwgroup_probe_ccwdev(struct ccw_device *cdev); +extern void ccwgroup_remove_ccwdev(struct ccw_device *cdev); + +#define to_ccwgroupdev(x) container_of((x), struct ccwgroup_device, dev) +#define to_ccwgroupdrv(x) container_of((x), struct ccwgroup_driver, driver) +#endif diff --git a/arch/s390/include/asm/checksum.h b/arch/s390/include/asm/checksum.h new file mode 100644 index 00000000..6c00f680 --- /dev/null +++ b/arch/s390/include/asm/checksum.h @@ -0,0 +1,149 @@ +#ifndef _S390_CHECKSUM_H +#define _S390_CHECKSUM_H + +/* + * include/asm-s390/checksum.h + * S390 fast network checksum routines + * see also arch/S390/lib/checksum.c + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Ulrich Hild (first version) + * Martin Schwidefsky (heavily optimized CKSM version) + * D.J. Barrow (third attempt) + */ + +#include <asm/uaccess.h> + +/* + * computes the checksum of a memory block at buff, length len, + * and adds in "sum" (32-bit) + * + * returns a 32-bit number suitable for feeding into itself + * or csum_tcpudp_magic + * + * this function must be called with even lengths, except + * for the last fragment, which may be odd + * + * it's best to have buff aligned on a 32-bit boundary + */ +static inline __wsum +csum_partial(const void *buff, int len, __wsum sum) +{ + register unsigned long reg2 asm("2") = (unsigned long) buff; + register unsigned long reg3 asm("3") = (unsigned long) len; + + asm volatile( + "0: cksm %0,%1\n" /* do checksum on longs */ + " jo 0b\n" + : "+d" (sum), "+d" (reg2), "+d" (reg3) : : "cc", "memory"); + return sum; +} + +/* + * the same as csum_partial_copy, but copies from user space. + * + * here even more important to align src and dst on a 32-bit (or even + * better 64-bit) boundary + * + * Copy from userspace and compute checksum. If we catch an exception + * then zero the rest of the buffer. + */ +static inline __wsum +csum_partial_copy_from_user(const void __user *src, void *dst, + int len, __wsum sum, + int *err_ptr) +{ + int missing; + + missing = copy_from_user(dst, src, len); + if (missing) { + memset(dst + len - missing, 0, missing); + *err_ptr = -EFAULT; + } + + return csum_partial(dst, len, sum); +} + + +static inline __wsum +csum_partial_copy_nocheck (const void *src, void *dst, int len, __wsum sum) +{ + memcpy(dst,src,len); + return csum_partial(dst, len, sum); +} + +/* + * Fold a partial checksum without adding pseudo headers + */ +static inline __sum16 csum_fold(__wsum sum) +{ + u32 csum = (__force u32) sum; + + csum += (csum >> 16) + (csum << 16); + csum >>= 16; + return (__force __sum16) ~csum; +} + +/* + * This is a version of ip_compute_csum() optimized for IP headers, + * which always checksum on 4 octet boundaries. + * + */ +static inline __sum16 ip_fast_csum(const void *iph, unsigned int ihl) +{ + return csum_fold(csum_partial(iph, ihl*4, 0)); +} + +/* + * computes the checksum of the TCP/UDP pseudo-header + * returns a 32-bit checksum + */ +static inline __wsum +csum_tcpudp_nofold(__be32 saddr, __be32 daddr, + unsigned short len, unsigned short proto, + __wsum sum) +{ + __u32 csum = (__force __u32)sum; + + csum += (__force __u32)saddr; + if (csum < (__force __u32)saddr) + csum++; + + csum += (__force __u32)daddr; + if (csum < (__force __u32)daddr) + csum++; + + csum += len + proto; + if (csum < len + proto) + csum++; + + return (__force __wsum)csum; +} + +/* + * computes the checksum of the TCP/UDP pseudo-header + * returns a 16-bit checksum, already complemented + */ + +static inline __sum16 +csum_tcpudp_magic(__be32 saddr, __be32 daddr, + unsigned short len, unsigned short proto, + __wsum sum) +{ + return csum_fold(csum_tcpudp_nofold(saddr,daddr,len,proto,sum)); +} + +/* + * this routine is used for miscellaneous IP-like checksums, mainly + * in icmp.c + */ + +static inline __sum16 ip_compute_csum(const void *buff, int len) +{ + return csum_fold(csum_partial(buff, len, 0)); +} + +#endif /* _S390_CHECKSUM_H */ + + diff --git a/arch/s390/include/asm/chpid.h b/arch/s390/include/asm/chpid.h new file mode 100644 index 00000000..8e88e222 --- /dev/null +++ b/arch/s390/include/asm/chpid.h @@ -0,0 +1,56 @@ +/* + * drivers/s390/cio/chpid.h + * + * Copyright IBM Corp. 2007 + * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> + */ + +#ifndef _ASM_S390_CHPID_H +#define _ASM_S390_CHPID_H + +#include <linux/string.h> +#include <linux/types.h> + +#define __MAX_CHPID 255 + +struct chp_id { + u8 reserved1; + u8 cssid; + u8 reserved2; + u8 id; +} __attribute__((packed)); + +#ifdef __KERNEL__ +#include <asm/cio.h> + +static inline void chp_id_init(struct chp_id *chpid) +{ + memset(chpid, 0, sizeof(struct chp_id)); +} + +static inline int chp_id_is_equal(struct chp_id *a, struct chp_id *b) +{ + return (a->id == b->id) && (a->cssid == b->cssid); +} + +static inline void chp_id_next(struct chp_id *chpid) +{ + if (chpid->id < __MAX_CHPID) + chpid->id++; + else { + chpid->id = 0; + chpid->cssid++; + } +} + +static inline int chp_id_is_valid(struct chp_id *chpid) +{ + return (chpid->cssid <= __MAX_CSSID); +} + + +#define chp_id_for_each(c) \ + for (chp_id_init(c); chp_id_is_valid(c); chp_id_next(c)) +#endif /* __KERNEL */ + +#endif /* _ASM_S390_CHPID_H */ diff --git a/arch/s390/include/asm/chsc.h b/arch/s390/include/asm/chsc.h new file mode 100644 index 00000000..4943654e --- /dev/null +++ b/arch/s390/include/asm/chsc.h @@ -0,0 +1,156 @@ +/* + * ioctl interface for /dev/chsc + * + * Copyright 2008 IBM Corp. + * Author(s): Cornelia Huck <cornelia.huck@de.ibm.com> + */ + +#ifndef _ASM_CHSC_H +#define _ASM_CHSC_H + +#include <linux/types.h> +#include <asm/chpid.h> +#include <asm/schid.h> + +struct chsc_async_header { + __u16 length; + __u16 code; + __u32 cmd_dependend; + __u32 key : 4; + __u32 : 28; + struct subchannel_id sid; +} __attribute__ ((packed)); + +struct chsc_async_area { + struct chsc_async_header header; + __u8 data[PAGE_SIZE - 16 /* size of chsc_async_header */]; +} __attribute__ ((packed)); + + +struct chsc_response_struct { + __u16 length; + __u16 code; + __u32 parms; + __u8 data[PAGE_SIZE - 8]; +} __attribute__ ((packed)); + +struct chsc_chp_cd { + struct chp_id chpid; + int m; + int fmt; + struct chsc_response_struct cpcb; +}; + +struct chsc_cu_cd { + __u16 cun; + __u8 cssid; + int m; + int fmt; + struct chsc_response_struct cucb; +}; + +struct chsc_sch_cud { + struct subchannel_id schid; + int fmt; + struct chsc_response_struct scub; +}; + +struct conf_id { + int m; + __u8 cssid; + __u8 ssid; +}; + +struct chsc_conf_info { + struct conf_id id; + int fmt; + struct chsc_response_struct scid; +}; + +struct ccl_parm_chpid { + int m; + struct chp_id chp; +}; + +struct ccl_parm_cssids { + __u8 f_cssid; + __u8 l_cssid; +}; + +struct chsc_comp_list { + struct { + enum { + CCL_CU_ON_CHP = 1, + CCL_CHP_TYPE_CAP = 2, + CCL_CSS_IMG = 4, + CCL_CSS_IMG_CONF_CHAR = 5, + CCL_IOP_CHP = 6, + } ctype; + int fmt; + struct ccl_parm_chpid chpid; + struct ccl_parm_cssids cssids; + } req; + struct chsc_response_struct sccl; +}; + +struct chsc_dcal { + struct { + enum { + DCAL_CSS_IID_PN = 4, + } atype; + __u32 list_parm[2]; + int fmt; + } req; + struct chsc_response_struct sdcal; +}; + +struct chsc_cpd_info { + struct chp_id chpid; + int m; + int fmt; + int rfmt; + int c; + struct chsc_response_struct chpdb; +}; + +#define CHSC_IOCTL_MAGIC 'c' + +#define CHSC_START _IOWR(CHSC_IOCTL_MAGIC, 0x81, struct chsc_async_area) +#define CHSC_INFO_CHANNEL_PATH _IOWR(CHSC_IOCTL_MAGIC, 0x82, \ + struct chsc_chp_cd) +#define CHSC_INFO_CU _IOWR(CHSC_IOCTL_MAGIC, 0x83, struct chsc_cu_cd) +#define CHSC_INFO_SCH_CU _IOWR(CHSC_IOCTL_MAGIC, 0x84, struct chsc_sch_cud) +#define CHSC_INFO_CI _IOWR(CHSC_IOCTL_MAGIC, 0x85, struct chsc_conf_info) +#define CHSC_INFO_CCL _IOWR(CHSC_IOCTL_MAGIC, 0x86, struct chsc_comp_list) +#define CHSC_INFO_CPD _IOWR(CHSC_IOCTL_MAGIC, 0x87, struct chsc_cpd_info) +#define CHSC_INFO_DCAL _IOWR(CHSC_IOCTL_MAGIC, 0x88, struct chsc_dcal) + +#ifdef __KERNEL__ + +struct css_general_char { + u64 : 12; + u32 dynio : 1; /* bit 12 */ + u32 : 28; + u32 aif : 1; /* bit 41 */ + u32 : 3; + u32 mcss : 1; /* bit 45 */ + u32 fcs : 1; /* bit 46 */ + u32 : 1; + u32 ext_mb : 1; /* bit 48 */ + u32 : 7; + u32 aif_tdd : 1; /* bit 56 */ + u32 : 1; + u32 qebsm : 1; /* bit 58 */ + u32 : 8; + u32 aif_osa : 1; /* bit 67 */ + u32 : 14; + u32 cib : 1; /* bit 82 */ + u32 : 5; + u32 fcx : 1; /* bit 88 */ + u32 : 7; +}__attribute__((packed)); + +extern struct css_general_char css_general_characteristics; + +#endif /* __KERNEL__ */ +#endif diff --git a/arch/s390/include/asm/cio.h b/arch/s390/include/asm/cio.h new file mode 100644 index 00000000..fc50a334 --- /dev/null +++ b/arch/s390/include/asm/cio.h @@ -0,0 +1,295 @@ +/* + * include/asm-s390/cio.h + * include/asm-s390x/cio.h + * + * Common interface for I/O on S/390 + */ +#ifndef _ASM_S390_CIO_H_ +#define _ASM_S390_CIO_H_ + +#include <linux/spinlock.h> +#include <asm/types.h> + +#ifdef __KERNEL__ + +#define LPM_ANYPATH 0xff +#define __MAX_CSSID 0 + +#include <asm/scsw.h> + +/** + * struct ccw1 - channel command word + * @cmd_code: command code + * @flags: flags, like IDA addressing, etc. + * @count: byte count + * @cda: data address + * + * The ccw is the basic structure to build channel programs that perform + * operations with the device or the control unit. Only Format-1 channel + * command words are supported. + */ +struct ccw1 { + __u8 cmd_code; + __u8 flags; + __u16 count; + __u32 cda; +} __attribute__ ((packed,aligned(8))); + +#define CCW_FLAG_DC 0x80 +#define CCW_FLAG_CC 0x40 +#define CCW_FLAG_SLI 0x20 +#define CCW_FLAG_SKIP 0x10 +#define CCW_FLAG_PCI 0x08 +#define CCW_FLAG_IDA 0x04 +#define CCW_FLAG_SUSPEND 0x02 + +#define CCW_CMD_READ_IPL 0x02 +#define CCW_CMD_NOOP 0x03 +#define CCW_CMD_BASIC_SENSE 0x04 +#define CCW_CMD_TIC 0x08 +#define CCW_CMD_STLCK 0x14 +#define CCW_CMD_SENSE_PGID 0x34 +#define CCW_CMD_SUSPEND_RECONN 0x5B +#define CCW_CMD_RDC 0x64 +#define CCW_CMD_RELEASE 0x94 +#define CCW_CMD_SET_PGID 0xAF +#define CCW_CMD_SENSE_ID 0xE4 +#define CCW_CMD_DCTL 0xF3 + +#define SENSE_MAX_COUNT 0x20 + +/** + * struct erw - extended report word + * @res0: reserved + * @auth: authorization check + * @pvrf: path-verification-required flag + * @cpt: channel-path timeout + * @fsavf: failing storage address validity flag + * @cons: concurrent sense + * @scavf: secondary ccw address validity flag + * @fsaf: failing storage address format + * @scnt: sense count, if @cons == %1 + * @res16: reserved + */ +struct erw { + __u32 res0 : 3; + __u32 auth : 1; + __u32 pvrf : 1; + __u32 cpt : 1; + __u32 fsavf : 1; + __u32 cons : 1; + __u32 scavf : 1; + __u32 fsaf : 1; + __u32 scnt : 6; + __u32 res16 : 16; +} __attribute__ ((packed)); + +/** + * struct sublog - subchannel logout area + * @res0: reserved + * @esf: extended status flags + * @lpum: last path used mask + * @arep: ancillary report + * @fvf: field-validity flags + * @sacc: storage access code + * @termc: termination code + * @devsc: device-status check + * @serr: secondary error + * @ioerr: i/o-error alert + * @seqc: sequence code + */ +struct sublog { + __u32 res0 : 1; + __u32 esf : 7; + __u32 lpum : 8; + __u32 arep : 1; + __u32 fvf : 5; + __u32 sacc : 2; + __u32 termc : 2; + __u32 devsc : 1; + __u32 serr : 1; + __u32 ioerr : 1; + __u32 seqc : 3; +} __attribute__ ((packed)); + +/** + * struct esw0 - Format 0 Extended Status Word (ESW) + * @sublog: subchannel logout + * @erw: extended report word + * @faddr: failing storage address + * @saddr: secondary ccw address + */ +struct esw0 { + struct sublog sublog; + struct erw erw; + __u32 faddr[2]; + __u32 saddr; +} __attribute__ ((packed)); + +/** + * struct esw1 - Format 1 Extended Status Word (ESW) + * @zero0: reserved zeros + * @lpum: last path used mask + * @zero16: reserved zeros + * @erw: extended report word + * @zeros: three fullwords of zeros + */ +struct esw1 { + __u8 zero0; + __u8 lpum; + __u16 zero16; + struct erw erw; + __u32 zeros[3]; +} __attribute__ ((packed)); + +/** + * struct esw2 - Format 2 Extended Status Word (ESW) + * @zero0: reserved zeros + * @lpum: last path used mask + * @dcti: device-connect-time interval + * @erw: extended report word + * @zeros: three fullwords of zeros + */ +struct esw2 { + __u8 zero0; + __u8 lpum; + __u16 dcti; + struct erw erw; + __u32 zeros[3]; +} __attribute__ ((packed)); + +/** + * struct esw3 - Format 3 Extended Status Word (ESW) + * @zero0: reserved zeros + * @lpum: last path used mask + * @res: reserved + * @erw: extended report word + * @zeros: three fullwords of zeros + */ +struct esw3 { + __u8 zero0; + __u8 lpum; + __u16 res; + struct erw erw; + __u32 zeros[3]; +} __attribute__ ((packed)); + +/** + * struct irb - interruption response block + * @scsw: subchannel status word + * @esw: extened status word, 4 formats + * @ecw: extended control word + * + * The irb that is handed to the device driver when an interrupt occurs. For + * solicited interrupts, the common I/O layer already performs checks whether + * a field is valid; a field not being valid is always passed as %0. + * If a unit check occurred, @ecw may contain sense data; this is retrieved + * by the common I/O layer itself if the device doesn't support concurrent + * sense (so that the device driver never needs to perform basic sene itself). + * For unsolicited interrupts, the irb is passed as-is (expect for sense data, + * if applicable). + */ +struct irb { + union scsw scsw; + union { + struct esw0 esw0; + struct esw1 esw1; + struct esw2 esw2; + struct esw3 esw3; + } esw; + __u8 ecw[32]; +} __attribute__ ((packed,aligned(4))); + +/** + * struct ciw - command information word (CIW) layout + * @et: entry type + * @reserved: reserved bits + * @ct: command type + * @cmd: command code + * @count: command count + */ +struct ciw { + __u32 et : 2; + __u32 reserved : 2; + __u32 ct : 4; + __u32 cmd : 8; + __u32 count : 16; +} __attribute__ ((packed)); + +#define CIW_TYPE_RCD 0x0 /* read configuration data */ +#define CIW_TYPE_SII 0x1 /* set interface identifier */ +#define CIW_TYPE_RNI 0x2 /* read node identifier */ + +/* + * Flags used as input parameters for do_IO() + */ +#define DOIO_ALLOW_SUSPEND 0x0001 /* allow for channel prog. suspend */ +#define DOIO_DENY_PREFETCH 0x0002 /* don't allow for CCW prefetch */ +#define DOIO_SUPPRESS_INTER 0x0004 /* suppress intermediate inter. */ + /* ... for suspended CCWs */ +/* Device or subchannel gone. */ +#define CIO_GONE 0x0001 +/* No path to device. */ +#define CIO_NO_PATH 0x0002 +/* Device has appeared. */ +#define CIO_OPER 0x0004 +/* Sick revalidation of device. */ +#define CIO_REVALIDATE 0x0008 +/* Device did not respond in time. */ +#define CIO_BOXED 0x0010 + +/** + * struct ccw_dev_id - unique identifier for ccw devices + * @ssid: subchannel set id + * @devno: device number + * + * This structure is not directly based on any hardware structure. The + * hardware identifies a device by its device number and its subchannel, + * which is in turn identified by its id. In order to get a unique identifier + * for ccw devices across subchannel sets, @struct ccw_dev_id has been + * introduced. + */ +struct ccw_dev_id { + u8 ssid; + u16 devno; +}; + +/** + * ccw_device_id_is_equal() - compare two ccw_dev_ids + * @dev_id1: a ccw_dev_id + * @dev_id2: another ccw_dev_id + * Returns: + * %1 if the two structures are equal field-by-field, + * %0 if not. + * Context: + * any + */ +static inline int ccw_dev_id_is_equal(struct ccw_dev_id *dev_id1, + struct ccw_dev_id *dev_id2) +{ + if ((dev_id1->ssid == dev_id2->ssid) && + (dev_id1->devno == dev_id2->devno)) + return 1; + return 0; +} + +extern void wait_cons_dev(void); + +extern void css_schedule_reprobe(void); + +extern void reipl_ccw_dev(struct ccw_dev_id *id); + +struct cio_iplinfo { + u16 devno; + int is_qdio; +}; + +extern int cio_get_iplinfo(struct cio_iplinfo *iplinfo); + +/* Function from drivers/s390/cio/chsc.c */ +int chsc_sstpc(void *page, unsigned int op, u16 ctrl); +int chsc_sstpi(void *page, void *result, size_t size); + +#endif + +#endif diff --git a/arch/s390/include/asm/cmb.h b/arch/s390/include/asm/cmb.h new file mode 100644 index 00000000..39ae0329 --- /dev/null +++ b/arch/s390/include/asm/cmb.h @@ -0,0 +1,61 @@ +#ifndef S390_CMB_H +#define S390_CMB_H + +#include <linux/types.h> + +/** + * struct cmbdata - channel measurement block data for user space + * @size: size of the stored data + * @elapsed_time: time since last sampling + * @ssch_rsch_count: number of ssch and rsch + * @sample_count: number of samples + * @device_connect_time: time of device connect + * @function_pending_time: time of function pending + * @device_disconnect_time: time of device disconnect + * @control_unit_queuing_time: time of control unit queuing + * @device_active_only_time: time of device active only + * @device_busy_time: time of device busy (ext. format) + * @initial_command_response_time: initial command response time (ext. format) + * + * All values are stored as 64 bit for simplicity, especially + * in 32 bit emulation mode. All time values are normalized to + * nanoseconds. + * Currently, two formats are known, which differ by the size of + * this structure, i.e. the last two members are only set when + * the extended channel measurement facility (first shipped in + * z990 machines) is activated. + * Potentially, more fields could be added, which would result in a + * new ioctl number. + */ +struct cmbdata { + __u64 size; + __u64 elapsed_time; + /* basic and exended format: */ + __u64 ssch_rsch_count; + __u64 sample_count; + __u64 device_connect_time; + __u64 function_pending_time; + __u64 device_disconnect_time; + __u64 control_unit_queuing_time; + __u64 device_active_only_time; + /* extended format only: */ + __u64 device_busy_time; + __u64 initial_command_response_time; +}; + +/* enable channel measurement */ +#define BIODASDCMFENABLE _IO(DASD_IOCTL_LETTER, 32) +/* enable channel measurement */ +#define BIODASDCMFDISABLE _IO(DASD_IOCTL_LETTER, 33) +/* read channel measurement data */ +#define BIODASDREADALLCMB _IOWR(DASD_IOCTL_LETTER, 33, struct cmbdata) + +#ifdef __KERNEL__ +struct ccw_device; +extern int enable_cmf(struct ccw_device *cdev); +extern int disable_cmf(struct ccw_device *cdev); +extern u64 cmf_read(struct ccw_device *cdev, int index); +extern int cmf_readall(struct ccw_device *cdev, struct cmbdata *data); + +#endif /* __KERNEL__ */ +#endif /* S390_CMB_H */ diff --git a/arch/s390/include/asm/cmpxchg.h b/arch/s390/include/asm/cmpxchg.h new file mode 100644 index 00000000..81d79084 --- /dev/null +++ b/arch/s390/include/asm/cmpxchg.h @@ -0,0 +1,224 @@ +/* + * Copyright IBM Corp. 1999, 2011 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>, + */ + +#ifndef __ASM_CMPXCHG_H +#define __ASM_CMPXCHG_H + +#include <linux/types.h> + +extern void __xchg_called_with_bad_pointer(void); + +static inline unsigned long __xchg(unsigned long x, void *ptr, int size) +{ + unsigned long addr, old; + int shift; + + switch (size) { + case 1: + addr = (unsigned long) ptr; + shift = (3 ^ (addr & 3)) << 3; + addr ^= addr & 3; + asm volatile( + " l %0,%4\n" + "0: lr 0,%0\n" + " nr 0,%3\n" + " or 0,%2\n" + " cs %0,0,%4\n" + " jl 0b\n" + : "=&d" (old), "=Q" (*(int *) addr) + : "d" (x << shift), "d" (~(255 << shift)), + "Q" (*(int *) addr) : "memory", "cc", "0"); + return old >> shift; + case 2: + addr = (unsigned long) ptr; + shift = (2 ^ (addr & 2)) << 3; + addr ^= addr & 2; + asm volatile( + " l %0,%4\n" + "0: lr 0,%0\n" + " nr 0,%3\n" + " or 0,%2\n" + " cs %0,0,%4\n" + " jl 0b\n" + : "=&d" (old), "=Q" (*(int *) addr) + : "d" (x << shift), "d" (~(65535 << shift)), + "Q" (*(int *) addr) : "memory", "cc", "0"); + return old >> shift; + case 4: + asm volatile( + " l %0,%3\n" + "0: cs %0,%2,%3\n" + " jl 0b\n" + : "=&d" (old), "=Q" (*(int *) ptr) + : "d" (x), "Q" (*(int *) ptr) + : "memory", "cc"); + return old; +#ifdef CONFIG_64BIT + case 8: + asm volatile( + " lg %0,%3\n" + "0: csg %0,%2,%3\n" + " jl 0b\n" + : "=&d" (old), "=m" (*(long *) ptr) + : "d" (x), "Q" (*(long *) ptr) + : "memory", "cc"); + return old; +#endif /* CONFIG_64BIT */ + } + __xchg_called_with_bad_pointer(); + return x; +} + +#define xchg(ptr, x) \ +({ \ + __typeof__(*(ptr)) __ret; \ + __ret = (__typeof__(*(ptr))) \ + __xchg((unsigned long)(x), (void *)(ptr), sizeof(*(ptr)));\ + __ret; \ +}) + +/* + * Atomic compare and exchange. Compare OLD with MEM, if identical, + * store NEW in MEM. Return the initial value in MEM. Success is + * indicated by comparing RETURN with OLD. + */ + +#define __HAVE_ARCH_CMPXCHG + +extern void __cmpxchg_called_with_bad_pointer(void); + +static inline unsigned long __cmpxchg(void *ptr, unsigned long old, + unsigned long new, int size) +{ + unsigned long addr, prev, tmp; + int shift; + + switch (size) { + case 1: + addr = (unsigned long) ptr; + shift = (3 ^ (addr & 3)) << 3; + addr ^= addr & 3; + asm volatile( + " l %0,%2\n" + "0: nr %0,%5\n" + " lr %1,%0\n" + " or %0,%3\n" + " or %1,%4\n" + " cs %0,%1,%2\n" + " jnl 1f\n" + " xr %1,%0\n" + " nr %1,%5\n" + " jnz 0b\n" + "1:" + : "=&d" (prev), "=&d" (tmp), "=Q" (*(int *) ptr) + : "d" (old << shift), "d" (new << shift), + "d" (~(255 << shift)), "Q" (*(int *) ptr) + : "memory", "cc"); + return prev >> shift; + case 2: + addr = (unsigned long) ptr; + shift = (2 ^ (addr & 2)) << 3; + addr ^= addr & 2; + asm volatile( + " l %0,%2\n" + "0: nr %0,%5\n" + " lr %1,%0\n" + " or %0,%3\n" + " or %1,%4\n" + " cs %0,%1,%2\n" + " jnl 1f\n" + " xr %1,%0\n" + " nr %1,%5\n" + " jnz 0b\n" + "1:" + : "=&d" (prev), "=&d" (tmp), "=Q" (*(int *) ptr) + : "d" (old << shift), "d" (new << shift), + "d" (~(65535 << shift)), "Q" (*(int *) ptr) + : "memory", "cc"); + return prev >> shift; + case 4: + asm volatile( + " cs %0,%3,%1\n" + : "=&d" (prev), "=Q" (*(int *) ptr) + : "0" (old), "d" (new), "Q" (*(int *) ptr) + : "memory", "cc"); + return prev; +#ifdef CONFIG_64BIT + case 8: + asm volatile( + " csg %0,%3,%1\n" + : "=&d" (prev), "=Q" (*(long *) ptr) + : "0" (old), "d" (new), "Q" (*(long *) ptr) + : "memory", "cc"); + return prev; +#endif /* CONFIG_64BIT */ + } + __cmpxchg_called_with_bad_pointer(); + return old; +} + +#define cmpxchg(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg((ptr), (unsigned long)(o), \ + (unsigned long)(n), sizeof(*(ptr)))) + +#ifdef CONFIG_64BIT +#define cmpxchg64(ptr, o, n) \ +({ \ + cmpxchg((ptr), (o), (n)); \ +}) +#else /* CONFIG_64BIT */ +static inline unsigned long long __cmpxchg64(void *ptr, + unsigned long long old, + unsigned long long new) +{ + register_pair rp_old = {.pair = old}; + register_pair rp_new = {.pair = new}; + + asm volatile( + " cds %0,%2,%1" + : "+&d" (rp_old), "=Q" (ptr) + : "d" (rp_new), "Q" (ptr) + : "cc"); + return rp_old.pair; +} +#define cmpxchg64(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg64((ptr), \ + (unsigned long long)(o), \ + (unsigned long long)(n))) +#endif /* CONFIG_64BIT */ + +#include <asm-generic/cmpxchg-local.h> + +static inline unsigned long __cmpxchg_local(void *ptr, + unsigned long old, + unsigned long new, int size) +{ + switch (size) { + case 1: + case 2: + case 4: +#ifdef CONFIG_64BIT + case 8: +#endif + return __cmpxchg(ptr, old, new, size); + default: + return __cmpxchg_local_generic(ptr, old, new, size); + } + + return old; +} + +/* + * cmpxchg_local and cmpxchg64_local are atomic wrt current CPU. Always make + * them available. + */ +#define cmpxchg_local(ptr, o, n) \ + ((__typeof__(*(ptr)))__cmpxchg_local((ptr), (unsigned long)(o), \ + (unsigned long)(n), sizeof(*(ptr)))) + +#define cmpxchg64_local(ptr, o, n) cmpxchg64((ptr), (o), (n)) + +#endif /* __ASM_CMPXCHG_H */ diff --git a/arch/s390/include/asm/compat.h b/arch/s390/include/asm/compat.h new file mode 100644 index 00000000..234f1d85 --- /dev/null +++ b/arch/s390/include/asm/compat.h @@ -0,0 +1,244 @@ +#ifndef _ASM_S390X_COMPAT_H +#define _ASM_S390X_COMPAT_H +/* + * Architecture specific compatibility types + */ +#include <linux/types.h> +#include <linux/sched.h> +#include <linux/thread_info.h> + +#define PSW32_MASK_PER 0x40000000UL +#define PSW32_MASK_DAT 0x04000000UL +#define PSW32_MASK_IO 0x02000000UL +#define PSW32_MASK_EXT 0x01000000UL +#define PSW32_MASK_KEY 0x00F00000UL +#define PSW32_MASK_BASE 0x00080000UL /* Always one */ +#define PSW32_MASK_MCHECK 0x00040000UL +#define PSW32_MASK_WAIT 0x00020000UL +#define PSW32_MASK_PSTATE 0x00010000UL +#define PSW32_MASK_ASC 0x0000C000UL +#define PSW32_MASK_CC 0x00003000UL +#define PSW32_MASK_PM 0x00000f00UL + +#define PSW32_MASK_USER 0x00003F00UL + +#define PSW32_ADDR_AMODE 0x80000000UL +#define PSW32_ADDR_INSN 0x7FFFFFFFUL + +#define PSW32_DEFAULT_KEY (((u32) PAGE_DEFAULT_ACC) << 20) + +#define PSW32_ASC_PRIMARY 0x00000000UL +#define PSW32_ASC_ACCREG 0x00004000UL +#define PSW32_ASC_SECONDARY 0x00008000UL +#define PSW32_ASC_HOME 0x0000C000UL + +extern u32 psw32_user_bits; + +#define COMPAT_USER_HZ 100 +#define COMPAT_UTS_MACHINE "s390\0\0\0\0" + +typedef u32 compat_size_t; +typedef s32 compat_ssize_t; +typedef s32 compat_time_t; +typedef s32 compat_clock_t; +typedef s32 compat_pid_t; +typedef u16 __compat_uid_t; +typedef u16 __compat_gid_t; +typedef u32 __compat_uid32_t; +typedef u32 __compat_gid32_t; +typedef u16 compat_mode_t; +typedef u32 compat_ino_t; +typedef u16 compat_dev_t; +typedef s32 compat_off_t; +typedef s64 compat_loff_t; +typedef u16 compat_nlink_t; +typedef u16 compat_ipc_pid_t; +typedef s32 compat_daddr_t; +typedef u32 compat_caddr_t; +typedef __kernel_fsid_t compat_fsid_t; +typedef s32 compat_key_t; +typedef s32 compat_timer_t; + +typedef s32 compat_int_t; +typedef s32 compat_long_t; +typedef s64 compat_s64; +typedef u32 compat_uint_t; +typedef u32 compat_ulong_t; +typedef u64 compat_u64; + +struct compat_timespec { + compat_time_t tv_sec; + s32 tv_nsec; +}; + +struct compat_timeval { + compat_time_t tv_sec; + s32 tv_usec; +}; + +struct compat_stat { + compat_dev_t st_dev; + u16 __pad1; + compat_ino_t st_ino; + compat_mode_t st_mode; + compat_nlink_t st_nlink; + __compat_uid_t st_uid; + __compat_gid_t st_gid; + compat_dev_t st_rdev; + u16 __pad2; + u32 st_size; + u32 st_blksize; + u32 st_blocks; + u32 st_atime; + u32 st_atime_nsec; + u32 st_mtime; + u32 st_mtime_nsec; + u32 st_ctime; + u32 st_ctime_nsec; + u32 __unused4; + u32 __unused5; +}; + +struct compat_flock { + short l_type; + short l_whence; + compat_off_t l_start; + compat_off_t l_len; + compat_pid_t l_pid; +}; + +#define F_GETLK64 12 +#define F_SETLK64 13 +#define F_SETLKW64 14 + +struct compat_flock64 { + short l_type; + short l_whence; + compat_loff_t l_start; + compat_loff_t l_len; + compat_pid_t l_pid; +}; + +struct compat_statfs { + s32 f_type; + s32 f_bsize; + s32 f_blocks; + s32 f_bfree; + s32 f_bavail; + s32 f_files; + s32 f_ffree; + compat_fsid_t f_fsid; + s32 f_namelen; + s32 f_frsize; + s32 f_flags; + s32 f_spare[5]; +}; + +#define COMPAT_RLIM_OLD_INFINITY 0x7fffffff +#define COMPAT_RLIM_INFINITY 0xffffffff + +typedef u32 compat_old_sigset_t; /* at least 32 bits */ + +#define _COMPAT_NSIG 64 +#define _COMPAT_NSIG_BPW 32 + +typedef u32 compat_sigset_word; + +#define COMPAT_OFF_T_MAX 0x7fffffff +#define COMPAT_LOFF_T_MAX 0x7fffffffffffffffL + +/* + * A pointer passed in from user mode. This should not + * be used for syscall parameters, just declare them + * as pointers because the syscall entry code will have + * appropriately converted them already. + */ +typedef u32 compat_uptr_t; + +static inline void __user *compat_ptr(compat_uptr_t uptr) +{ + return (void __user *)(unsigned long)(uptr & 0x7fffffffUL); +} + +static inline compat_uptr_t ptr_to_compat(void __user *uptr) +{ + return (u32)(unsigned long)uptr; +} + +#ifdef CONFIG_COMPAT + +static inline int is_compat_task(void) +{ + return is_32bit_task(); +} + +#endif + +static inline void __user *arch_compat_alloc_user_space(long len) +{ + unsigned long stack; + + stack = KSTK_ESP(current); + if (is_compat_task()) + stack &= 0x7fffffffUL; + return (void __user *) (stack - len); +} + +struct compat_ipc64_perm { + compat_key_t key; + __compat_uid32_t uid; + __compat_gid32_t gid; + __compat_uid32_t cuid; + __compat_gid32_t cgid; + compat_mode_t mode; + unsigned short __pad1; + unsigned short seq; + unsigned short __pad2; + unsigned int __unused1; + unsigned int __unused2; +}; + +struct compat_semid64_ds { + struct compat_ipc64_perm sem_perm; + compat_time_t sem_otime; + compat_ulong_t __pad1; + compat_time_t sem_ctime; + compat_ulong_t __pad2; + compat_ulong_t sem_nsems; + compat_ulong_t __unused1; + compat_ulong_t __unused2; +}; + +struct compat_msqid64_ds { + struct compat_ipc64_perm msg_perm; + compat_time_t msg_stime; + compat_ulong_t __pad1; + compat_time_t msg_rtime; + compat_ulong_t __pad2; + compat_time_t msg_ctime; + compat_ulong_t __pad3; + compat_ulong_t msg_cbytes; + compat_ulong_t msg_qnum; + compat_ulong_t msg_qbytes; + compat_pid_t msg_lspid; + compat_pid_t msg_lrpid; + compat_ulong_t __unused1; + compat_ulong_t __unused2; +}; + +struct compat_shmid64_ds { + struct compat_ipc64_perm shm_perm; + compat_size_t shm_segsz; + compat_time_t shm_atime; + compat_ulong_t __pad1; + compat_time_t shm_dtime; + compat_ulong_t __pad2; + compat_time_t shm_ctime; + compat_ulong_t __pad3; + compat_pid_t shm_cpid; + compat_pid_t shm_lpid; + compat_ulong_t shm_nattch; + compat_ulong_t __unused1; + compat_ulong_t __unused2; +}; +#endif /* _ASM_S390X_COMPAT_H */ diff --git a/arch/s390/include/asm/cpcmd.h b/arch/s390/include/asm/cpcmd.h new file mode 100644 index 00000000..48a9eab1 --- /dev/null +++ b/arch/s390/include/asm/cpcmd.h @@ -0,0 +1,34 @@ +/* + * arch/s390/kernel/cpcmd.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), + * Christian Borntraeger (cborntra@de.ibm.com), + */ + +#ifndef _ASM_S390_CPCMD_H +#define _ASM_S390_CPCMD_H + +/* + * the lowlevel function for cpcmd + * the caller of __cpcmd has to ensure that the response buffer is below 2 GB + */ +extern int __cpcmd(const char *cmd, char *response, int rlen, int *response_code); + +/* + * cpcmd is the in-kernel interface for issuing CP commands + * + * cmd: null-terminated command string, max 240 characters + * response: response buffer for VM's textual response + * rlen: size of the response buffer, cpcmd will not exceed this size + * but will cap the output, if its too large. Everything that + * did not fit into the buffer will be silently dropped + * response_code: return pointer for VM's error code + * return value: the size of the response. The caller can check if the buffer + * was large enough by comparing the return value and rlen + * NOTE: If the response buffer is not below 2 GB, cpcmd can sleep + */ +extern int cpcmd(const char *cmd, char *response, int rlen, int *response_code); + +#endif /* _ASM_S390_CPCMD_H */ diff --git a/arch/s390/include/asm/cpu.h b/arch/s390/include/asm/cpu.h new file mode 100644 index 00000000..e0b69540 --- /dev/null +++ b/arch/s390/include/asm/cpu.h @@ -0,0 +1,26 @@ +/* + * Copyright IBM Corp. 2000,2009 + * Author(s): Hartmut Penner <hp@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Christian Ehrhardt <ehrhardt@de.ibm.com>, + */ + +#ifndef _ASM_S390_CPU_H +#define _ASM_S390_CPU_H + +#define MAX_CPU_ADDRESS 255 + +#ifndef __ASSEMBLY__ + +#include <linux/types.h> + +struct cpuid +{ + unsigned int version : 8; + unsigned int ident : 24; + unsigned int machine : 16; + unsigned int unused : 16; +} __attribute__ ((packed, aligned(8))); + +#endif /* __ASSEMBLY__ */ +#endif /* _ASM_S390_CPU_H */ diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h new file mode 100644 index 00000000..a3afecda --- /dev/null +++ b/arch/s390/include/asm/cpu_mf.h @@ -0,0 +1,97 @@ +/* + * CPU-measurement facilities + * + * Copyright IBM Corp. 2012 + * Author(s): Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + * Jan Glauber <jang@linux.vnet.ibm.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ +#ifndef _ASM_S390_CPU_MF_H +#define _ASM_S390_CPU_MF_H + +#include <asm/facility.h> + +#define CPU_MF_INT_SF_IAE (1 << 31) /* invalid entry address */ +#define CPU_MF_INT_SF_ISE (1 << 30) /* incorrect SDBT entry */ +#define CPU_MF_INT_SF_PRA (1 << 29) /* program request alert */ +#define CPU_MF_INT_SF_SACA (1 << 23) /* sampler auth. change alert */ +#define CPU_MF_INT_SF_LSDA (1 << 22) /* loss of sample data alert */ +#define CPU_MF_INT_CF_CACA (1 << 7) /* counter auth. change alert */ +#define CPU_MF_INT_CF_LCDA (1 << 6) /* loss of counter data alert */ + +#define CPU_MF_INT_CF_MASK (CPU_MF_INT_CF_CACA|CPU_MF_INT_CF_LCDA) +#define CPU_MF_INT_SF_MASK (CPU_MF_INT_SF_IAE|CPU_MF_INT_SF_ISE| \ + CPU_MF_INT_SF_PRA|CPU_MF_INT_SF_SACA| \ + CPU_MF_INT_SF_LSDA) + +/* CPU measurement facility support */ +static inline int cpum_cf_avail(void) +{ + return MACHINE_HAS_SPP && test_facility(67); +} + +static inline int cpum_sf_avail(void) +{ + return MACHINE_HAS_SPP && test_facility(68); +} + + +struct cpumf_ctr_info { + u16 cfvn; + u16 auth_ctl; + u16 enable_ctl; + u16 act_ctl; + u16 max_cpu; + u16 csvn; + u16 max_cg; + u16 reserved1; + u32 reserved2[12]; +} __packed; + +/* Query counter information */ +static inline int qctri(struct cpumf_ctr_info *info) +{ + int rc = -EINVAL; + + asm volatile ( + "0: .insn s,0xb28e0000,%1\n" + "1: lhi %0,0\n" + "2:\n" + EX_TABLE(1b, 2b) + : "+d" (rc), "=Q" (*info)); + return rc; +} + +/* Load CPU-counter-set controls */ +static inline int lcctl(u64 ctl) +{ + int cc; + + asm volatile ( + " .insn s,0xb2840000,%1\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (cc) : "m" (ctl) : "cc"); + return cc; +} + +/* Extract CPU counter */ +static inline int ecctr(u64 ctr, u64 *val) +{ + register u64 content asm("4") = 0; + int cc; + + asm volatile ( + " .insn rre,0xb2e40000,%0,%2\n" + " ipm %1\n" + " srl %1,28\n" + : "=d" (content), "=d" (cc) : "d" (ctr) : "cc"); + if (!cc) + *val = content; + return cc; +} + +#endif /* _ASM_S390_CPU_MF_H */ diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h new file mode 100644 index 00000000..24ef186a --- /dev/null +++ b/arch/s390/include/asm/cputime.h @@ -0,0 +1,191 @@ +/* + * include/asm-s390/cputime.h + * + * (C) Copyright IBM Corp. 2004 + * + * Author: Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef _S390_CPUTIME_H +#define _S390_CPUTIME_H + +#include <linux/types.h> +#include <linux/percpu.h> +#include <linux/spinlock.h> +#include <asm/div64.h> + +/* We want to use full resolution of the CPU timer: 2**-12 micro-seconds. */ + +typedef unsigned long long __nocast cputime_t; +typedef unsigned long long __nocast cputime64_t; + +static inline unsigned long __div(unsigned long long n, unsigned long base) +{ +#ifndef __s390x__ + register_pair rp; + + rp.pair = n >> 1; + asm ("dr %0,%1" : "+d" (rp) : "d" (base >> 1)); + return rp.subreg.odd; +#else /* __s390x__ */ + return n / base; +#endif /* __s390x__ */ +} + +#define cputime_one_jiffy jiffies_to_cputime(1) + +/* + * Convert cputime to jiffies and back. + */ +static inline unsigned long cputime_to_jiffies(const cputime_t cputime) +{ + return __div((__force unsigned long long) cputime, 4096000000ULL / HZ); +} + +static inline cputime_t jiffies_to_cputime(const unsigned int jif) +{ + return (__force cputime_t)(jif * (4096000000ULL / HZ)); +} + +static inline u64 cputime64_to_jiffies64(cputime64_t cputime) +{ + unsigned long long jif = (__force unsigned long long) cputime; + do_div(jif, 4096000000ULL / HZ); + return jif; +} + +static inline cputime64_t jiffies64_to_cputime64(const u64 jif) +{ + return (__force cputime64_t)(jif * (4096000000ULL / HZ)); +} + +/* + * Convert cputime to microseconds and back. + */ +static inline unsigned int cputime_to_usecs(const cputime_t cputime) +{ + return (__force unsigned long long) cputime >> 12; +} + +static inline cputime_t usecs_to_cputime(const unsigned int m) +{ + return (__force cputime_t)(m * 4096ULL); +} + +#define usecs_to_cputime64(m) usecs_to_cputime(m) + +/* + * Convert cputime to milliseconds and back. + */ +static inline unsigned int cputime_to_secs(const cputime_t cputime) +{ + return __div((__force unsigned long long) cputime, 2048000000) >> 1; +} + +static inline cputime_t secs_to_cputime(const unsigned int s) +{ + return (__force cputime_t)(s * 4096000000ULL); +} + +/* + * Convert cputime to timespec and back. + */ +static inline cputime_t timespec_to_cputime(const struct timespec *value) +{ + unsigned long long ret = value->tv_sec * 4096000000ULL; + return (__force cputime_t)(ret + value->tv_nsec * 4096 / 1000); +} + +static inline void cputime_to_timespec(const cputime_t cputime, + struct timespec *value) +{ + unsigned long long __cputime = (__force unsigned long long) cputime; +#ifndef __s390x__ + register_pair rp; + + rp.pair = __cputime >> 1; + asm ("dr %0,%1" : "+d" (rp) : "d" (2048000000UL)); + value->tv_nsec = rp.subreg.even * 1000 / 4096; + value->tv_sec = rp.subreg.odd; +#else + value->tv_nsec = (__cputime % 4096000000ULL) * 1000 / 4096; + value->tv_sec = __cputime / 4096000000ULL; +#endif +} + +/* + * Convert cputime to timeval and back. + * Since cputime and timeval have the same resolution (microseconds) + * this is easy. + */ +static inline cputime_t timeval_to_cputime(const struct timeval *value) +{ + unsigned long long ret = value->tv_sec * 4096000000ULL; + return (__force cputime_t)(ret + value->tv_usec * 4096ULL); +} + +static inline void cputime_to_timeval(const cputime_t cputime, + struct timeval *value) +{ + unsigned long long __cputime = (__force unsigned long long) cputime; +#ifndef __s390x__ + register_pair rp; + + rp.pair = __cputime >> 1; + asm ("dr %0,%1" : "+d" (rp) : "d" (2048000000UL)); + value->tv_usec = rp.subreg.even / 4096; + value->tv_sec = rp.subreg.odd; +#else + value->tv_usec = (__cputime % 4096000000ULL) / 4096; + value->tv_sec = __cputime / 4096000000ULL; +#endif +} + +/* + * Convert cputime to clock and back. + */ +static inline clock_t cputime_to_clock_t(cputime_t cputime) +{ + unsigned long long clock = (__force unsigned long long) cputime; + do_div(clock, 4096000000ULL / USER_HZ); + return clock; +} + +static inline cputime_t clock_t_to_cputime(unsigned long x) +{ + return (__force cputime_t)(x * (4096000000ULL / USER_HZ)); +} + +/* + * Convert cputime64 to clock. + */ +static inline clock_t cputime64_to_clock_t(cputime64_t cputime) +{ + unsigned long long clock = (__force unsigned long long) cputime; + do_div(clock, 4096000000ULL / USER_HZ); + return clock; +} + +struct s390_idle_data { + unsigned int sequence; + unsigned long long idle_count; + unsigned long long idle_enter; + unsigned long long idle_exit; + unsigned long long idle_time; + int nohz_delay; +}; + +DECLARE_PER_CPU(struct s390_idle_data, s390_idle); + +cputime64_t s390_get_idle_time(int cpu); + +#define arch_idle_time(cpu) s390_get_idle_time(cpu) + +static inline int s390_nohz_delay(int cpu) +{ + return __get_cpu_var(s390_idle).nohz_delay != 0; +} + +#define arch_needs_cpu(cpu) s390_nohz_delay(cpu) + +#endif /* _S390_CPUTIME_H */ diff --git a/arch/s390/include/asm/crw.h b/arch/s390/include/asm/crw.h new file mode 100644 index 00000000..749a97e6 --- /dev/null +++ b/arch/s390/include/asm/crw.h @@ -0,0 +1,69 @@ +/* + * Data definitions for channel report processing + * Copyright IBM Corp. 2000,2009 + * Author(s): Ingo Adlung <adlung@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Cornelia Huck <cornelia.huck@de.ibm.com>, + * Heiko Carstens <heiko.carstens@de.ibm.com>, + */ + +#ifndef _ASM_S390_CRW_H +#define _ASM_S390_CRW_H + +#include <linux/types.h> + +/* + * Channel Report Word + */ +struct crw { + __u32 res1 : 1; /* reserved zero */ + __u32 slct : 1; /* solicited */ + __u32 oflw : 1; /* overflow */ + __u32 chn : 1; /* chained */ + __u32 rsc : 4; /* reporting source code */ + __u32 anc : 1; /* ancillary report */ + __u32 res2 : 1; /* reserved zero */ + __u32 erc : 6; /* error-recovery code */ + __u32 rsid : 16; /* reporting-source ID */ +} __attribute__ ((packed)); + +typedef void (*crw_handler_t)(struct crw *, struct crw *, int); + +extern int crw_register_handler(int rsc, crw_handler_t handler); +extern void crw_unregister_handler(int rsc); +extern void crw_handle_channel_report(void); +void crw_wait_for_channel_report(void); + +#define NR_RSCS 16 + +#define CRW_RSC_MONITOR 0x2 /* monitoring facility */ +#define CRW_RSC_SCH 0x3 /* subchannel */ +#define CRW_RSC_CPATH 0x4 /* channel path */ +#define CRW_RSC_CONFIG 0x9 /* configuration-alert facility */ +#define CRW_RSC_CSS 0xB /* channel subsystem */ + +#define CRW_ERC_EVENT 0x00 /* event information pending */ +#define CRW_ERC_AVAIL 0x01 /* available */ +#define CRW_ERC_INIT 0x02 /* initialized */ +#define CRW_ERC_TERROR 0x03 /* temporary error */ +#define CRW_ERC_IPARM 0x04 /* installed parm initialized */ +#define CRW_ERC_TERM 0x05 /* terminal */ +#define CRW_ERC_PERRN 0x06 /* perm. error, fac. not init */ +#define CRW_ERC_PERRI 0x07 /* perm. error, facility init */ +#define CRW_ERC_PMOD 0x08 /* installed parameters modified */ + +static inline int stcrw(struct crw *pcrw) +{ + int ccode; + + asm volatile( + " stcrw 0(%2)\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (ccode), "=m" (*pcrw) + : "a" (pcrw) + : "cc" ); + return ccode; +} + +#endif /* _ASM_S390_CRW_H */ diff --git a/arch/s390/include/asm/ctl_reg.h b/arch/s390/include/asm/ctl_reg.h new file mode 100644 index 00000000..ecde9417 --- /dev/null +++ b/arch/s390/include/asm/ctl_reg.h @@ -0,0 +1,76 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_CTL_REG_H +#define __ASM_CTL_REG_H + +#ifdef __s390x__ + +#define __ctl_load(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " lctlg %1,%2,%0\n" \ + : : "Q" (*(addrtype *)(&array)), \ + "i" (low), "i" (high)); \ + }) + +#define __ctl_store(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " stctg %1,%2,%0\n" \ + : "=Q" (*(addrtype *)(&array)) \ + : "i" (low), "i" (high)); \ + }) + +#else /* __s390x__ */ + +#define __ctl_load(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " lctl %1,%2,%0\n" \ + : : "Q" (*(addrtype *)(&array)), \ + "i" (low), "i" (high)); \ +}) + +#define __ctl_store(array, low, high) ({ \ + typedef struct { char _[sizeof(array)]; } addrtype; \ + asm volatile( \ + " stctl %1,%2,%0\n" \ + : "=Q" (*(addrtype *)(&array)) \ + : "i" (low), "i" (high)); \ + }) + +#endif /* __s390x__ */ + +#define __ctl_set_bit(cr, bit) ({ \ + unsigned long __dummy; \ + __ctl_store(__dummy, cr, cr); \ + __dummy |= 1UL << (bit); \ + __ctl_load(__dummy, cr, cr); \ +}) + +#define __ctl_clear_bit(cr, bit) ({ \ + unsigned long __dummy; \ + __ctl_store(__dummy, cr, cr); \ + __dummy &= ~(1UL << (bit)); \ + __ctl_load(__dummy, cr, cr); \ +}) + +#ifdef CONFIG_SMP + +extern void smp_ctl_set_bit(int cr, int bit); +extern void smp_ctl_clear_bit(int cr, int bit); +#define ctl_set_bit(cr, bit) smp_ctl_set_bit(cr, bit) +#define ctl_clear_bit(cr, bit) smp_ctl_clear_bit(cr, bit) + +#else + +#define ctl_set_bit(cr, bit) __ctl_set_bit(cr, bit) +#define ctl_clear_bit(cr, bit) __ctl_clear_bit(cr, bit) + +#endif /* CONFIG_SMP */ + +#endif /* __ASM_CTL_REG_H */ diff --git a/arch/s390/include/asm/current.h b/arch/s390/include/asm/current.h new file mode 100644 index 00000000..83cf36cd --- /dev/null +++ b/arch/s390/include/asm/current.h @@ -0,0 +1,23 @@ +/* + * include/asm-s390/current.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/current.h" + */ + +#ifndef _S390_CURRENT_H +#define _S390_CURRENT_H + +#ifdef __KERNEL__ +#include <asm/lowcore.h> + +struct task_struct; + +#define current ((struct task_struct *const)S390_lowcore.current_task) + +#endif + +#endif /* !(_S390_CURRENT_H) */ diff --git a/arch/s390/include/asm/dasd.h b/arch/s390/include/asm/dasd.h new file mode 100644 index 00000000..0be28efe --- /dev/null +++ b/arch/s390/include/asm/dasd.h @@ -0,0 +1,292 @@ +/* + * File...........: linux/drivers/s390/block/dasd.c + * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> + * Bugreports.to..: <Linux390@de.ibm.com> + * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000 + * EMC Symmetrix ioctl Copyright EMC Corporation, 2008 + * Author.........: Nigel Hislop <hislop_nigel@emc.com> + * + * This file is the interface of the DASD device driver, which is exported to user space + * any future changes wrt the API will result in a change of the APIVERSION reported + * to userspace by the DASDAPIVER-ioctl + * + */ + +#ifndef DASD_H +#define DASD_H +#include <linux/types.h> +#include <linux/ioctl.h> + +#define DASD_IOCTL_LETTER 'D' + +#define DASD_API_VERSION 6 + +/* + * struct dasd_information2_t + * represents any data about the device, which is visible to userspace. + * including foramt and featueres. + */ +typedef struct dasd_information2_t { + unsigned int devno; /* S/390 devno */ + unsigned int real_devno; /* for aliases */ + unsigned int schid; /* S/390 subchannel identifier */ + unsigned int cu_type : 16; /* from SenseID */ + unsigned int cu_model : 8; /* from SenseID */ + unsigned int dev_type : 16; /* from SenseID */ + unsigned int dev_model : 8; /* from SenseID */ + unsigned int open_count; + unsigned int req_queue_len; + unsigned int chanq_len; /* length of chanq */ + char type[4]; /* from discipline.name, 'none' for unknown */ + unsigned int status; /* current device level */ + unsigned int label_block; /* where to find the VOLSER */ + unsigned int FBA_layout; /* fixed block size (like AIXVOL) */ + unsigned int characteristics_size; + unsigned int confdata_size; + char characteristics[64]; /* from read_device_characteristics */ + char configuration_data[256]; /* from read_configuration_data */ + unsigned int format; /* format info like formatted/cdl/ldl/... */ + unsigned int features; /* dasd features like 'ro',... */ + unsigned int reserved0; /* reserved for further use ,... */ + unsigned int reserved1; /* reserved for further use ,... */ + unsigned int reserved2; /* reserved for further use ,... */ + unsigned int reserved3; /* reserved for further use ,... */ + unsigned int reserved4; /* reserved for further use ,... */ + unsigned int reserved5; /* reserved for further use ,... */ + unsigned int reserved6; /* reserved for further use ,... */ + unsigned int reserved7; /* reserved for further use ,... */ +} dasd_information2_t; + +/* + * values to be used for dasd_information_t.format + * 0x00: NOT formatted + * 0x01: Linux disc layout + * 0x02: Common disc layout + */ +#define DASD_FORMAT_NONE 0 +#define DASD_FORMAT_LDL 1 +#define DASD_FORMAT_CDL 2 +/* + * values to be used for dasd_information_t.features + * 0x00: default features + * 0x01: readonly (ro) + * 0x02: use diag discipline (diag) + * 0x04: set the device initially online (internal use only) + * 0x08: enable ERP related logging + * 0x20: give access to raw eckd data + */ +#define DASD_FEATURE_DEFAULT 0x00 +#define DASD_FEATURE_READONLY 0x01 +#define DASD_FEATURE_USEDIAG 0x02 +#define DASD_FEATURE_INITIAL_ONLINE 0x04 +#define DASD_FEATURE_ERPLOG 0x08 +#define DASD_FEATURE_FAILFAST 0x10 +#define DASD_FEATURE_FAILONSLCK 0x20 +#define DASD_FEATURE_USERAW 0x40 + +#define DASD_PARTN_BITS 2 + +/* + * struct dasd_information_t + * represents any data about the data, which is visible to userspace + */ +typedef struct dasd_information_t { + unsigned int devno; /* S/390 devno */ + unsigned int real_devno; /* for aliases */ + unsigned int schid; /* S/390 subchannel identifier */ + unsigned int cu_type : 16; /* from SenseID */ + unsigned int cu_model : 8; /* from SenseID */ + unsigned int dev_type : 16; /* from SenseID */ + unsigned int dev_model : 8; /* from SenseID */ + unsigned int open_count; + unsigned int req_queue_len; + unsigned int chanq_len; /* length of chanq */ + char type[4]; /* from discipline.name, 'none' for unknown */ + unsigned int status; /* current device level */ + unsigned int label_block; /* where to find the VOLSER */ + unsigned int FBA_layout; /* fixed block size (like AIXVOL) */ + unsigned int characteristics_size; + unsigned int confdata_size; + char characteristics[64]; /* from read_device_characteristics */ + char configuration_data[256]; /* from read_configuration_data */ +} dasd_information_t; + +/* + * Read Subsystem Data - Performance Statistics + */ +typedef struct dasd_rssd_perf_stats_t { + unsigned char invalid:1; + unsigned char format:3; + unsigned char data_format:4; + unsigned char unit_address; + unsigned short device_status; + unsigned int nr_read_normal; + unsigned int nr_read_normal_hits; + unsigned int nr_write_normal; + unsigned int nr_write_fast_normal_hits; + unsigned int nr_read_seq; + unsigned int nr_read_seq_hits; + unsigned int nr_write_seq; + unsigned int nr_write_fast_seq_hits; + unsigned int nr_read_cache; + unsigned int nr_read_cache_hits; + unsigned int nr_write_cache; + unsigned int nr_write_fast_cache_hits; + unsigned int nr_inhibit_cache; + unsigned int nr_bybass_cache; + unsigned int nr_seq_dasd_to_cache; + unsigned int nr_dasd_to_cache; + unsigned int nr_cache_to_dasd; + unsigned int nr_delayed_fast_write; + unsigned int nr_normal_fast_write; + unsigned int nr_seq_fast_write; + unsigned int nr_cache_miss; + unsigned char status2; + unsigned int nr_quick_write_promotes; + unsigned char reserved; + unsigned short ssid; + unsigned char reseved2[96]; +} __attribute__((packed)) dasd_rssd_perf_stats_t; + +/* + * struct profile_info_t + * holds the profinling information + */ +typedef struct dasd_profile_info_t { + unsigned int dasd_io_reqs; /* number of requests processed at all */ + unsigned int dasd_io_sects; /* number of sectors processed at all */ + unsigned int dasd_io_secs[32]; /* histogram of request's sizes */ + unsigned int dasd_io_times[32]; /* histogram of requests's times */ + unsigned int dasd_io_timps[32]; /* histogram of requests's times per sector */ + unsigned int dasd_io_time1[32]; /* histogram of time from build to start */ + unsigned int dasd_io_time2[32]; /* histogram of time from start to irq */ + unsigned int dasd_io_time2ps[32]; /* histogram of time from start to irq */ + unsigned int dasd_io_time3[32]; /* histogram of time from irq to end */ + unsigned int dasd_io_nr_req[32]; /* histogram of # of requests in chanq */ +} dasd_profile_info_t; + +/* + * struct format_data_t + * represents all data necessary to format a dasd + */ +typedef struct format_data_t { + unsigned int start_unit; /* from track */ + unsigned int stop_unit; /* to track */ + unsigned int blksize; /* sectorsize */ + unsigned int intensity; +} format_data_t; + +/* + * values to be used for format_data_t.intensity + * 0/8: normal format + * 1/9: also write record zero + * 3/11: also write home address + * 4/12: invalidate track + */ +#define DASD_FMT_INT_FMT_R0 1 /* write record zero */ +#define DASD_FMT_INT_FMT_HA 2 /* write home address, also set FMT_R0 ! */ +#define DASD_FMT_INT_INVAL 4 /* invalidate tracks */ +#define DASD_FMT_INT_COMPAT 8 /* use OS/390 compatible disk layout */ + + +/* + * struct attrib_data_t + * represents the operation (cache) bits for the device. + * Used in DE to influence caching of the DASD. + */ +typedef struct attrib_data_t { + unsigned char operation:3; /* cache operation mode */ + unsigned char reserved:5; /* cache operation mode */ + __u16 nr_cyl; /* no of cyliners for read ahaed */ + __u8 reserved2[29]; /* for future use */ +} __attribute__ ((packed)) attrib_data_t; + +/* definition of operation (cache) bits within attributes of DE */ +#define DASD_NORMAL_CACHE 0x0 +#define DASD_BYPASS_CACHE 0x1 +#define DASD_INHIBIT_LOAD 0x2 +#define DASD_SEQ_ACCESS 0x3 +#define DASD_SEQ_PRESTAGE 0x4 +#define DASD_REC_ACCESS 0x5 + +/* + * Perform EMC Symmetrix I/O + */ +typedef struct dasd_symmio_parms { + unsigned char reserved[8]; /* compat with older releases */ + unsigned long long psf_data; /* char * cast to u64 */ + unsigned long long rssd_result; /* char * cast to u64 */ + int psf_data_len; + int rssd_result_len; +} __attribute__ ((packed)) dasd_symmio_parms_t; + +/* + * Data returned by Sense Path Group ID (SNID) + */ +struct dasd_snid_data { + struct { + __u8 group:2; + __u8 reserve:2; + __u8 mode:1; + __u8 res:3; + } __attribute__ ((packed)) path_state; + __u8 pgid[11]; +} __attribute__ ((packed)); + +struct dasd_snid_ioctl_data { + struct dasd_snid_data data; + __u8 path_mask; +} __attribute__ ((packed)); + + +/******************************************************************************** + * SECTION: Definition of IOCTLs + * + * Here ist how the ioctl-nr should be used: + * 0 - 31 DASD driver itself + * 32 - 239 still open + * 240 - 255 reserved for EMC + *******************************************************************************/ + +/* Disable the volume (for Linux) */ +#define BIODASDDISABLE _IO(DASD_IOCTL_LETTER,0) +/* Enable the volume (for Linux) */ +#define BIODASDENABLE _IO(DASD_IOCTL_LETTER,1) +/* Issue a reserve/release command, rsp. */ +#define BIODASDRSRV _IO(DASD_IOCTL_LETTER,2) /* reserve */ +#define BIODASDRLSE _IO(DASD_IOCTL_LETTER,3) /* release */ +#define BIODASDSLCK _IO(DASD_IOCTL_LETTER,4) /* steal lock */ +/* reset profiling information of a device */ +#define BIODASDPRRST _IO(DASD_IOCTL_LETTER,5) +/* Quiesce IO on device */ +#define BIODASDQUIESCE _IO(DASD_IOCTL_LETTER,6) +/* Resume IO on device */ +#define BIODASDRESUME _IO(DASD_IOCTL_LETTER,7) + + +/* retrieve API version number */ +#define DASDAPIVER _IOR(DASD_IOCTL_LETTER,0,int) +/* Get information on a dasd device */ +#define BIODASDINFO _IOR(DASD_IOCTL_LETTER,1,dasd_information_t) +/* retrieve profiling information of a device */ +#define BIODASDPRRD _IOR(DASD_IOCTL_LETTER,2,dasd_profile_info_t) +/* Get information on a dasd device (enhanced) */ +#define BIODASDINFO2 _IOR(DASD_IOCTL_LETTER,3,dasd_information2_t) +/* Performance Statistics Read */ +#define BIODASDPSRD _IOR(DASD_IOCTL_LETTER,4,dasd_rssd_perf_stats_t) +/* Get Attributes (cache operations) */ +#define BIODASDGATTR _IOR(DASD_IOCTL_LETTER,5,attrib_data_t) + + +/* #define BIODASDFORMAT _IOW(IOCTL_LETTER,0,format_data_t) , deprecated */ +#define BIODASDFMT _IOW(DASD_IOCTL_LETTER,1,format_data_t) +/* Set Attributes (cache operations) */ +#define BIODASDSATTR _IOW(DASD_IOCTL_LETTER,2,attrib_data_t) + +/* Get Sense Path Group ID (SNID) data */ +#define BIODASDSNID _IOWR(DASD_IOCTL_LETTER, 1, struct dasd_snid_ioctl_data) + +#define BIODASDSYMMIO _IOWR(DASD_IOCTL_LETTER, 240, dasd_symmio_parms_t) + +#endif /* DASD_H */ + diff --git a/arch/s390/include/asm/debug.h b/arch/s390/include/asm/debug.h new file mode 100644 index 00000000..8a8245ed --- /dev/null +++ b/arch/s390/include/asm/debug.h @@ -0,0 +1,260 @@ +/* + * include/asm-s390/debug.h + * S/390 debug facility + * + * Copyright (C) 1999, 2000 IBM Deutschland Entwicklung GmbH, + * IBM Corporation + */ + +#ifndef DEBUG_H +#define DEBUG_H + +#include <linux/fs.h> + +/* Note: + * struct __debug_entry must be defined outside of #ifdef __KERNEL__ + * in order to allow a user program to analyze the 'raw'-view. + */ + +struct __debug_entry{ + union { + struct { + unsigned long long clock:52; + unsigned long long exception:1; + unsigned long long level:3; + unsigned long long cpuid:8; + } fields; + + unsigned long long stck; + } id; + void* caller; +} __attribute__((packed)); + + +#define __DEBUG_FEATURE_VERSION 2 /* version of debug feature */ + +#ifdef __KERNEL__ +#include <linux/string.h> +#include <linux/spinlock.h> +#include <linux/kernel.h> +#include <linux/time.h> + +#define DEBUG_MAX_LEVEL 6 /* debug levels range from 0 to 6 */ +#define DEBUG_OFF_LEVEL -1 /* level where debug is switched off */ +#define DEBUG_FLUSH_ALL -1 /* parameter to flush all areas */ +#define DEBUG_MAX_VIEWS 10 /* max number of views in proc fs */ +#define DEBUG_MAX_NAME_LEN 64 /* max length for a debugfs file name */ +#define DEBUG_DEFAULT_LEVEL 3 /* initial debug level */ + +#define DEBUG_DIR_ROOT "s390dbf" /* name of debug root directory in proc fs */ + +#define DEBUG_DATA(entry) (char*)(entry + 1) /* data is stored behind */ + /* the entry information */ + +typedef struct __debug_entry debug_entry_t; + +struct debug_view; + +typedef struct debug_info { + struct debug_info* next; + struct debug_info* prev; + atomic_t ref_count; + spinlock_t lock; + int level; + int nr_areas; + int pages_per_area; + int buf_size; + int entry_size; + debug_entry_t*** areas; + int active_area; + int *active_pages; + int *active_entries; + struct dentry* debugfs_root_entry; + struct dentry* debugfs_entries[DEBUG_MAX_VIEWS]; + struct debug_view* views[DEBUG_MAX_VIEWS]; + char name[DEBUG_MAX_NAME_LEN]; + umode_t mode; +} debug_info_t; + +typedef int (debug_header_proc_t) (debug_info_t* id, + struct debug_view* view, + int area, + debug_entry_t* entry, + char* out_buf); + +typedef int (debug_format_proc_t) (debug_info_t* id, + struct debug_view* view, char* out_buf, + const char* in_buf); +typedef int (debug_prolog_proc_t) (debug_info_t* id, + struct debug_view* view, + char* out_buf); +typedef int (debug_input_proc_t) (debug_info_t* id, + struct debug_view* view, + struct file* file, + const char __user *user_buf, + size_t in_buf_size, loff_t* offset); + +int debug_dflt_header_fn(debug_info_t* id, struct debug_view* view, + int area, debug_entry_t* entry, char* out_buf); + +struct debug_view { + char name[DEBUG_MAX_NAME_LEN]; + debug_prolog_proc_t* prolog_proc; + debug_header_proc_t* header_proc; + debug_format_proc_t* format_proc; + debug_input_proc_t* input_proc; + void* private_data; +}; + +extern struct debug_view debug_hex_ascii_view; +extern struct debug_view debug_raw_view; +extern struct debug_view debug_sprintf_view; + +/* do NOT use the _common functions */ + +debug_entry_t* debug_event_common(debug_info_t* id, int level, + const void* data, int length); + +debug_entry_t* debug_exception_common(debug_info_t* id, int level, + const void* data, int length); + +/* Debug Feature API: */ + +debug_info_t *debug_register(const char *name, int pages, int nr_areas, + int buf_size); + +debug_info_t *debug_register_mode(const char *name, int pages, int nr_areas, + int buf_size, umode_t mode, uid_t uid, + gid_t gid); + +void debug_unregister(debug_info_t* id); + +void debug_set_level(debug_info_t* id, int new_level); + +void debug_set_critical(void); +void debug_stop_all(void); + +static inline debug_entry_t* +debug_event(debug_info_t* id, int level, void* data, int length) +{ + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_event_common(id,level,data,length); +} + +static inline debug_entry_t* +debug_int_event(debug_info_t* id, int level, unsigned int tag) +{ + unsigned int t=tag; + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_event_common(id,level,&t,sizeof(unsigned int)); +} + +static inline debug_entry_t * +debug_long_event (debug_info_t* id, int level, unsigned long tag) +{ + unsigned long t=tag; + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_event_common(id,level,&t,sizeof(unsigned long)); +} + +static inline debug_entry_t* +debug_text_event(debug_info_t* id, int level, const char* txt) +{ + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_event_common(id,level,txt,strlen(txt)); +} + +/* + * IMPORTANT: Use "%s" in sprintf format strings with care! Only pointers are + * stored in the s390dbf. See Documentation/s390/s390dbf.txt for more details! + */ +extern debug_entry_t * +debug_sprintf_event(debug_info_t* id,int level,char *string,...) + __attribute__ ((format(printf, 3, 4))); + + +static inline debug_entry_t* +debug_exception(debug_info_t* id, int level, void* data, int length) +{ + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_exception_common(id,level,data,length); +} + +static inline debug_entry_t* +debug_int_exception(debug_info_t* id, int level, unsigned int tag) +{ + unsigned int t=tag; + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_exception_common(id,level,&t,sizeof(unsigned int)); +} + +static inline debug_entry_t * +debug_long_exception (debug_info_t* id, int level, unsigned long tag) +{ + unsigned long t=tag; + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_exception_common(id,level,&t,sizeof(unsigned long)); +} + +static inline debug_entry_t* +debug_text_exception(debug_info_t* id, int level, const char* txt) +{ + if ((!id) || (level > id->level) || (id->pages_per_area == 0)) + return NULL; + return debug_exception_common(id,level,txt,strlen(txt)); +} + +/* + * IMPORTANT: Use "%s" in sprintf format strings with care! Only pointers are + * stored in the s390dbf. See Documentation/s390/s390dbf.txt for more details! + */ +extern debug_entry_t * +debug_sprintf_exception(debug_info_t* id,int level,char *string,...) + __attribute__ ((format(printf, 3, 4))); + +int debug_register_view(debug_info_t* id, struct debug_view* view); +int debug_unregister_view(debug_info_t* id, struct debug_view* view); + +/* + define the debug levels: + - 0 No debugging output to console or syslog + - 1 Log internal errors to syslog, ignore check conditions + - 2 Log internal errors and check conditions to syslog + - 3 Log internal errors to console, log check conditions to syslog + - 4 Log internal errors and check conditions to console + - 5 panic on internal errors, log check conditions to console + - 6 panic on both, internal errors and check conditions + */ + +#ifndef DEBUG_LEVEL +#define DEBUG_LEVEL 4 +#endif + +#define INTERNAL_ERRMSG(x,y...) "E" __FILE__ "%d: " x, __LINE__, y +#define INTERNAL_WRNMSG(x,y...) "W" __FILE__ "%d: " x, __LINE__, y +#define INTERNAL_INFMSG(x,y...) "I" __FILE__ "%d: " x, __LINE__, y +#define INTERNAL_DEBMSG(x,y...) "D" __FILE__ "%d: " x, __LINE__, y + +#if DEBUG_LEVEL > 0 +#define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_INFO(x...) printk ( KERN_INFO PRINTK_HEADER x ) +#define PRINT_WARN(x...) printk ( KERN_WARNING PRINTK_HEADER x ) +#define PRINT_ERR(x...) printk ( KERN_ERR PRINTK_HEADER x ) +#define PRINT_FATAL(x...) panic ( PRINTK_HEADER x ) +#else +#define PRINT_DEBUG(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_INFO(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_WARN(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_ERR(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#define PRINT_FATAL(x...) printk ( KERN_DEBUG PRINTK_HEADER x ) +#endif /* DASD_DEBUG */ + +#endif /* __KERNEL__ */ +#endif /* DEBUG_H */ diff --git a/arch/s390/include/asm/delay.h b/arch/s390/include/asm/delay.h new file mode 100644 index 00000000..0e3b35f9 --- /dev/null +++ b/arch/s390/include/asm/delay.h @@ -0,0 +1,26 @@ +/* + * include/asm-s390/delay.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/delay.h" + * Copyright (C) 1993 Linus Torvalds + * + * Delay routines calling functions in arch/s390/lib/delay.c + */ + +#ifndef _S390_DELAY_H +#define _S390_DELAY_H + +void __ndelay(unsigned long long nsecs); +void __udelay(unsigned long long usecs); +void udelay_simple(unsigned long long usecs); +void __delay(unsigned long loops); + +#define ndelay(n) __ndelay((unsigned long long) (n)) +#define udelay(n) __udelay((unsigned long long) (n)) +#define mdelay(n) __udelay((unsigned long long) (n) * 1000) + +#endif /* defined(_S390_DELAY_H) */ diff --git a/arch/s390/include/asm/device.h b/arch/s390/include/asm/device.h new file mode 100644 index 00000000..d8f9872b --- /dev/null +++ b/arch/s390/include/asm/device.h @@ -0,0 +1,7 @@ +/* + * Arch specific extensions to struct device + * + * This file is released under the GPLv2 + */ +#include <asm-generic/device.h> + diff --git a/arch/s390/include/asm/diag.h b/arch/s390/include/asm/diag.h new file mode 100644 index 00000000..7e91c580 --- /dev/null +++ b/arch/s390/include/asm/diag.h @@ -0,0 +1,52 @@ +/* + * s390 diagnose functions + * + * Copyright IBM Corp. 2007 + * Author(s): Michael Holzheu <holzheu@de.ibm.com> + */ + +#ifndef _ASM_S390_DIAG_H +#define _ASM_S390_DIAG_H + +/* + * Diagnose 10: Release page range + */ +static inline void diag10_range(unsigned long start_pfn, unsigned long num_pfn) +{ + unsigned long start_addr, end_addr; + + start_addr = start_pfn << PAGE_SHIFT; + end_addr = (start_pfn + num_pfn - 1) << PAGE_SHIFT; + + asm volatile( + "0: diag %0,%1,0x10\n" + "1:\n" + EX_TABLE(0b, 1b) + EX_TABLE(1b, 1b) + : : "a" (start_addr), "a" (end_addr)); +} + +/* + * Diagnose 14: Input spool file manipulation + */ +extern int diag14(unsigned long rx, unsigned long ry1, unsigned long subcode); + +/* + * Diagnose 210: Get information about a virtual device + */ +struct diag210 { + u16 vrdcdvno; /* device number (input) */ + u16 vrdclen; /* data block length (input) */ + u8 vrdcvcla; /* virtual device class (output) */ + u8 vrdcvtyp; /* virtual device type (output) */ + u8 vrdcvsta; /* virtual device status (output) */ + u8 vrdcvfla; /* virtual device flags (output) */ + u8 vrdcrccl; /* real device class (output) */ + u8 vrdccrty; /* real device type (output) */ + u8 vrdccrmd; /* real device model (output) */ + u8 vrdccrft; /* real device feature (output) */ +} __attribute__((packed, aligned(4))); + +extern int diag210(struct diag210 *addr); + +#endif /* _ASM_S390_DIAG_H */ diff --git a/arch/s390/include/asm/div64.h b/arch/s390/include/asm/div64.h new file mode 100644 index 00000000..6cd978ce --- /dev/null +++ b/arch/s390/include/asm/div64.h @@ -0,0 +1 @@ +#include <asm-generic/div64.h> diff --git a/arch/s390/include/asm/dma.h b/arch/s390/include/asm/dma.h new file mode 100644 index 00000000..7425c6af --- /dev/null +++ b/arch/s390/include/asm/dma.h @@ -0,0 +1,16 @@ +/* + * include/asm-s390/dma.h + * + * S390 version + */ + +#ifndef _ASM_DMA_H +#define _ASM_DMA_H + +#include <asm/io.h> /* need byte IO */ + +#define MAX_DMA_ADDRESS 0x80000000 + +#define free_dma(x) do { } while (0) + +#endif /* _ASM_DMA_H */ diff --git a/arch/s390/include/asm/ebcdic.h b/arch/s390/include/asm/ebcdic.h new file mode 100644 index 00000000..7f6f641d --- /dev/null +++ b/arch/s390/include/asm/ebcdic.h @@ -0,0 +1,49 @@ +/* + * include/asm-s390/ebcdic.h + * EBCDIC -> ASCII, ASCII -> EBCDIC conversion routines. + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef _EBCDIC_H +#define _EBCDIC_H + +#ifndef _S390_TYPES_H +#include <types.h> +#endif + +extern __u8 _ascebc_500[256]; /* ASCII -> EBCDIC 500 conversion table */ +extern __u8 _ebcasc_500[256]; /* EBCDIC 500 -> ASCII conversion table */ +extern __u8 _ascebc[256]; /* ASCII -> EBCDIC conversion table */ +extern __u8 _ebcasc[256]; /* EBCDIC -> ASCII conversion table */ +extern __u8 _ebc_tolower[256]; /* EBCDIC -> lowercase */ +extern __u8 _ebc_toupper[256]; /* EBCDIC -> uppercase */ + +static inline void +codepage_convert(const __u8 *codepage, volatile __u8 * addr, unsigned long nr) +{ + if (nr-- <= 0) + return; + asm volatile( + " bras 1,1f\n" + " tr 0(1,%0),0(%2)\n" + "0: tr 0(256,%0),0(%2)\n" + " la %0,256(%0)\n" + "1: ahi %1,-256\n" + " jnm 0b\n" + " ex %1,0(1)" + : "+&a" (addr), "+&a" (nr) + : "a" (codepage) : "cc", "memory", "1"); +} + +#define ASCEBC(addr,nr) codepage_convert(_ascebc, addr, nr) +#define EBCASC(addr,nr) codepage_convert(_ebcasc, addr, nr) +#define ASCEBC_500(addr,nr) codepage_convert(_ascebc_500, addr, nr) +#define EBCASC_500(addr,nr) codepage_convert(_ebcasc_500, addr, nr) +#define EBC_TOLOWER(addr,nr) codepage_convert(_ebc_tolower, addr, nr) +#define EBC_TOUPPER(addr,nr) codepage_convert(_ebc_toupper, addr, nr) + +#endif + diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h new file mode 100644 index 00000000..c4ee39f7 --- /dev/null +++ b/arch/s390/include/asm/elf.h @@ -0,0 +1,216 @@ +/* + * include/asm-s390/elf.h + * + * S390 version + * + * Derived from "include/asm-i386/elf.h" + */ + +#ifndef __ASMS390_ELF_H +#define __ASMS390_ELF_H + +/* s390 relocations defined by the ABIs */ +#define R_390_NONE 0 /* No reloc. */ +#define R_390_8 1 /* Direct 8 bit. */ +#define R_390_12 2 /* Direct 12 bit. */ +#define R_390_16 3 /* Direct 16 bit. */ +#define R_390_32 4 /* Direct 32 bit. */ +#define R_390_PC32 5 /* PC relative 32 bit. */ +#define R_390_GOT12 6 /* 12 bit GOT offset. */ +#define R_390_GOT32 7 /* 32 bit GOT offset. */ +#define R_390_PLT32 8 /* 32 bit PC relative PLT address. */ +#define R_390_COPY 9 /* Copy symbol at runtime. */ +#define R_390_GLOB_DAT 10 /* Create GOT entry. */ +#define R_390_JMP_SLOT 11 /* Create PLT entry. */ +#define R_390_RELATIVE 12 /* Adjust by program base. */ +#define R_390_GOTOFF32 13 /* 32 bit offset to GOT. */ +#define R_390_GOTPC 14 /* 32 bit PC rel. offset to GOT. */ +#define R_390_GOT16 15 /* 16 bit GOT offset. */ +#define R_390_PC16 16 /* PC relative 16 bit. */ +#define R_390_PC16DBL 17 /* PC relative 16 bit shifted by 1. */ +#define R_390_PLT16DBL 18 /* 16 bit PC rel. PLT shifted by 1. */ +#define R_390_PC32DBL 19 /* PC relative 32 bit shifted by 1. */ +#define R_390_PLT32DBL 20 /* 32 bit PC rel. PLT shifted by 1. */ +#define R_390_GOTPCDBL 21 /* 32 bit PC rel. GOT shifted by 1. */ +#define R_390_64 22 /* Direct 64 bit. */ +#define R_390_PC64 23 /* PC relative 64 bit. */ +#define R_390_GOT64 24 /* 64 bit GOT offset. */ +#define R_390_PLT64 25 /* 64 bit PC relative PLT address. */ +#define R_390_GOTENT 26 /* 32 bit PC rel. to GOT entry >> 1. */ +#define R_390_GOTOFF16 27 /* 16 bit offset to GOT. */ +#define R_390_GOTOFF64 28 /* 64 bit offset to GOT. */ +#define R_390_GOTPLT12 29 /* 12 bit offset to jump slot. */ +#define R_390_GOTPLT16 30 /* 16 bit offset to jump slot. */ +#define R_390_GOTPLT32 31 /* 32 bit offset to jump slot. */ +#define R_390_GOTPLT64 32 /* 64 bit offset to jump slot. */ +#define R_390_GOTPLTENT 33 /* 32 bit rel. offset to jump slot. */ +#define R_390_PLTOFF16 34 /* 16 bit offset from GOT to PLT. */ +#define R_390_PLTOFF32 35 /* 32 bit offset from GOT to PLT. */ +#define R_390_PLTOFF64 36 /* 16 bit offset from GOT to PLT. */ +#define R_390_TLS_LOAD 37 /* Tag for load insn in TLS code. */ +#define R_390_TLS_GDCALL 38 /* Tag for function call in general + dynamic TLS code. */ +#define R_390_TLS_LDCALL 39 /* Tag for function call in local + dynamic TLS code. */ +#define R_390_TLS_GD32 40 /* Direct 32 bit for general dynamic + thread local data. */ +#define R_390_TLS_GD64 41 /* Direct 64 bit for general dynamic + thread local data. */ +#define R_390_TLS_GOTIE12 42 /* 12 bit GOT offset for static TLS + block offset. */ +#define R_390_TLS_GOTIE32 43 /* 32 bit GOT offset for static TLS + block offset. */ +#define R_390_TLS_GOTIE64 44 /* 64 bit GOT offset for static TLS + block offset. */ +#define R_390_TLS_LDM32 45 /* Direct 32 bit for local dynamic + thread local data in LD code. */ +#define R_390_TLS_LDM64 46 /* Direct 64 bit for local dynamic + thread local data in LD code. */ +#define R_390_TLS_IE32 47 /* 32 bit address of GOT entry for + negated static TLS block offset. */ +#define R_390_TLS_IE64 48 /* 64 bit address of GOT entry for + negated static TLS block offset. */ +#define R_390_TLS_IEENT 49 /* 32 bit rel. offset to GOT entry for + negated static TLS block offset. */ +#define R_390_TLS_LE32 50 /* 32 bit negated offset relative to + static TLS block. */ +#define R_390_TLS_LE64 51 /* 64 bit negated offset relative to + static TLS block. */ +#define R_390_TLS_LDO32 52 /* 32 bit offset relative to TLS + block. */ +#define R_390_TLS_LDO64 53 /* 64 bit offset relative to TLS + block. */ +#define R_390_TLS_DTPMOD 54 /* ID of module containing symbol. */ +#define R_390_TLS_DTPOFF 55 /* Offset in TLS block. */ +#define R_390_TLS_TPOFF 56 /* Negate offset in static TLS + block. */ +#define R_390_20 57 /* Direct 20 bit. */ +#define R_390_GOT20 58 /* 20 bit GOT offset. */ +#define R_390_GOTPLT20 59 /* 20 bit offset to jump slot. */ +#define R_390_TLS_GOTIE20 60 /* 20 bit GOT offset for static TLS + block offset. */ +/* Keep this the last entry. */ +#define R_390_NUM 61 + +/* Bits present in AT_HWCAP. */ +#define HWCAP_S390_ESAN3 1 +#define HWCAP_S390_ZARCH 2 +#define HWCAP_S390_STFLE 4 +#define HWCAP_S390_MSA 8 +#define HWCAP_S390_LDISP 16 +#define HWCAP_S390_EIMM 32 +#define HWCAP_S390_DFP 64 +#define HWCAP_S390_HPAGE 128 +#define HWCAP_S390_ETF3EH 256 +#define HWCAP_S390_HIGH_GPRS 512 + +/* + * These are used to set parameters in the core dumps. + */ +#ifndef __s390x__ +#define ELF_CLASS ELFCLASS32 +#else /* __s390x__ */ +#define ELF_CLASS ELFCLASS64 +#endif /* __s390x__ */ +#define ELF_DATA ELFDATA2MSB +#define ELF_ARCH EM_S390 + +/* + * ELF register definitions.. + */ + +#include <asm/ptrace.h> +#include <asm/user.h> + +typedef s390_fp_regs elf_fpregset_t; +typedef s390_regs elf_gregset_t; + +typedef s390_fp_regs compat_elf_fpregset_t; +typedef s390_compat_regs compat_elf_gregset_t; + +#include <linux/sched.h> /* for task_struct */ +#include <asm/mmu_context.h> + +#include <asm/vdso.h> + +extern unsigned int vdso_enabled; + +/* + * This is used to ensure we don't load something for the wrong architecture. + */ +#define elf_check_arch(x) \ + (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \ + && (x)->e_ident[EI_CLASS] == ELF_CLASS) +#define compat_elf_check_arch(x) \ + (((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \ + && (x)->e_ident[EI_CLASS] == ELF_CLASS) +#define compat_start_thread start_thread31 + +/* For SVR4/S390 the function pointer to be registered with `atexit` is + passed in R14. */ +#define ELF_PLAT_INIT(_r, load_addr) \ + do { \ + _r->gprs[14] = 0; \ + } while (0) + +#define CORE_DUMP_USE_REGSET +#define ELF_EXEC_PAGESIZE 4096 + +/* This is the location that an ET_DYN program is loaded if exec'ed. Typical + use of this is to invoke "./ld.so someprog" to test out a new version of + the loader. We need to make sure that it is out of the way of the program + that it will "exec", and that there is sufficient room for the brk. */ + +extern unsigned long randomize_et_dyn(unsigned long base); +#define ELF_ET_DYN_BASE (randomize_et_dyn(STACK_TOP / 3 * 2)) + +/* This yields a mask that user programs can use to figure out what + instruction set this CPU supports. */ + +extern unsigned long elf_hwcap; +#define ELF_HWCAP (elf_hwcap) + +/* This yields a string that ld.so will use to load implementation + specific libraries for optimization. This is more specific in + intent than poking at uname or /proc/cpuinfo. + + For the moment, we have only optimizations for the Intel generations, + but that could change... */ + +#define ELF_PLATFORM_SIZE 8 +extern char elf_platform[]; +#define ELF_PLATFORM (elf_platform) + +#ifndef __s390x__ +#define SET_PERSONALITY(ex) set_personality(PER_LINUX) +#else /* __s390x__ */ +#define SET_PERSONALITY(ex) \ +do { \ + if (personality(current->personality) != PER_LINUX32) \ + set_personality(PER_LINUX | \ + (current->personality & ~PER_MASK)); \ + if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \ + set_thread_flag(TIF_31BIT); \ + else \ + clear_thread_flag(TIF_31BIT); \ +} while (0) +#endif /* __s390x__ */ + +#define STACK_RND_MASK 0x7ffUL + +#define ARCH_DLINFO \ +do { \ + if (vdso_enabled) \ + NEW_AUX_ENT(AT_SYSINFO_EHDR, \ + (unsigned long)current->mm->context.vdso_base); \ +} while (0) + +struct linux_binprm; + +#define ARCH_HAS_SETUP_ADDITIONAL_PAGES 1 +int arch_setup_additional_pages(struct linux_binprm *, int); + +extern unsigned long arch_randomize_brk(struct mm_struct *mm); +#define arch_randomize_brk arch_randomize_brk + +#endif diff --git a/arch/s390/include/asm/emergency-restart.h b/arch/s390/include/asm/emergency-restart.h new file mode 100644 index 00000000..108d8c48 --- /dev/null +++ b/arch/s390/include/asm/emergency-restart.h @@ -0,0 +1,6 @@ +#ifndef _ASM_EMERGENCY_RESTART_H +#define _ASM_EMERGENCY_RESTART_H + +#include <asm-generic/emergency-restart.h> + +#endif /* _ASM_EMERGENCY_RESTART_H */ diff --git a/arch/s390/include/asm/errno.h b/arch/s390/include/asm/errno.h new file mode 100644 index 00000000..e41d5b37 --- /dev/null +++ b/arch/s390/include/asm/errno.h @@ -0,0 +1,13 @@ +/* + * include/asm-s390/errno.h + * + * S390 version + * + */ + +#ifndef _S390_ERRNO_H +#define _S390_ERRNO_H + +#include <asm-generic/errno.h> + +#endif diff --git a/arch/s390/include/asm/etr.h b/arch/s390/include/asm/etr.h new file mode 100644 index 00000000..538e1b36 --- /dev/null +++ b/arch/s390/include/asm/etr.h @@ -0,0 +1,258 @@ +/* + * include/asm-s390/etr.h + * + * Copyright IBM Corp. 2006 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + */ +#ifndef __S390_ETR_H +#define __S390_ETR_H + +/* ETR attachment control register */ +struct etr_eacr { + unsigned int e0 : 1; /* port 0 stepping control */ + unsigned int e1 : 1; /* port 1 stepping control */ + unsigned int _pad0 : 5; /* must be 00100 */ + unsigned int dp : 1; /* data port control */ + unsigned int p0 : 1; /* port 0 change recognition control */ + unsigned int p1 : 1; /* port 1 change recognition control */ + unsigned int _pad1 : 3; /* must be 000 */ + unsigned int ea : 1; /* ETR alert control */ + unsigned int es : 1; /* ETR sync check control */ + unsigned int sl : 1; /* switch to local control */ +} __attribute__ ((packed)); + +/* Port state returned by steai */ +enum etr_psc { + etr_psc_operational = 0, + etr_psc_semi_operational = 1, + etr_psc_protocol_error = 4, + etr_psc_no_symbols = 8, + etr_psc_no_signal = 12, + etr_psc_pps_mode = 13 +}; + +/* Logical port state returned by stetr */ +enum etr_lpsc { + etr_lpsc_operational_step = 0, + etr_lpsc_operational_alt = 1, + etr_lpsc_semi_operational = 2, + etr_lpsc_protocol_error = 4, + etr_lpsc_no_symbol_sync = 8, + etr_lpsc_no_signal = 12, + etr_lpsc_pps_mode = 13 +}; + +/* ETR status words */ +struct etr_esw { + struct etr_eacr eacr; /* attachment control register */ + unsigned int y : 1; /* stepping mode */ + unsigned int _pad0 : 5; /* must be 00000 */ + unsigned int p : 1; /* stepping port number */ + unsigned int q : 1; /* data port number */ + unsigned int psc0 : 4; /* port 0 state code */ + unsigned int psc1 : 4; /* port 1 state code */ +} __attribute__ ((packed)); + +/* Second level data register status word */ +struct etr_slsw { + unsigned int vv1 : 1; /* copy of validity bit data frame 1 */ + unsigned int vv2 : 1; /* copy of validity bit data frame 2 */ + unsigned int vv3 : 1; /* copy of validity bit data frame 3 */ + unsigned int vv4 : 1; /* copy of validity bit data frame 4 */ + unsigned int _pad0 : 19; /* must by all zeroes */ + unsigned int n : 1; /* EAF port number */ + unsigned int v1 : 1; /* validity bit ETR data frame 1 */ + unsigned int v2 : 1; /* validity bit ETR data frame 2 */ + unsigned int v3 : 1; /* validity bit ETR data frame 3 */ + unsigned int v4 : 1; /* validity bit ETR data frame 4 */ + unsigned int _pad1 : 4; /* must be 0000 */ +} __attribute__ ((packed)); + +/* ETR data frames */ +struct etr_edf1 { + unsigned int u : 1; /* untuned bit */ + unsigned int _pad0 : 1; /* must be 0 */ + unsigned int r : 1; /* service request bit */ + unsigned int _pad1 : 4; /* must be 0000 */ + unsigned int a : 1; /* time adjustment bit */ + unsigned int net_id : 8; /* ETR network id */ + unsigned int etr_id : 8; /* id of ETR which sends data frames */ + unsigned int etr_pn : 8; /* port number of ETR output port */ +} __attribute__ ((packed)); + +struct etr_edf2 { + unsigned int etv : 32; /* Upper 32 bits of TOD. */ +} __attribute__ ((packed)); + +struct etr_edf3 { + unsigned int rc : 8; /* failure reason code */ + unsigned int _pad0 : 3; /* must be 000 */ + unsigned int c : 1; /* ETR coupled bit */ + unsigned int tc : 4; /* ETR type code */ + unsigned int blto : 8; /* biased local time offset */ + /* (blto - 128) * 15 = minutes */ + unsigned int buo : 8; /* biased utc offset */ + /* (buo - 128) = leap seconds */ +} __attribute__ ((packed)); + +struct etr_edf4 { + unsigned int ed : 8; /* ETS device dependent data */ + unsigned int _pad0 : 1; /* must be 0 */ + unsigned int buc : 5; /* biased ut1 correction */ + /* (buc - 16) * 0.1 seconds */ + unsigned int em : 6; /* ETS error magnitude */ + unsigned int dc : 6; /* ETS drift code */ + unsigned int sc : 6; /* ETS steering code */ +} __attribute__ ((packed)); + +/* + * ETR attachment information block, two formats + * format 1 has 4 reserved words with a size of 64 bytes + * format 2 has 16 reserved words with a size of 96 bytes + */ +struct etr_aib { + struct etr_esw esw; + struct etr_slsw slsw; + unsigned long long tsp; + struct etr_edf1 edf1; + struct etr_edf2 edf2; + struct etr_edf3 edf3; + struct etr_edf4 edf4; + unsigned int reserved[16]; +} __attribute__ ((packed,aligned(8))); + +/* ETR interruption parameter */ +struct etr_irq_parm { + unsigned int _pad0 : 8; + unsigned int pc0 : 1; /* port 0 state change */ + unsigned int pc1 : 1; /* port 1 state change */ + unsigned int _pad1 : 3; + unsigned int eai : 1; /* ETR alert indication */ + unsigned int _pad2 : 18; +} __attribute__ ((packed)); + +/* Query TOD offset result */ +struct etr_ptff_qto { + unsigned long long physical_clock; + unsigned long long tod_offset; + unsigned long long logical_tod_offset; + unsigned long long tod_epoch_difference; +} __attribute__ ((packed)); + +/* Inline assembly helper functions */ +static inline int etr_setr(struct etr_eacr *ctrl) +{ + int rc = -ENOSYS; + + asm volatile( + " .insn s,0xb2160000,%1\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "+d" (rc) : "Q" (*ctrl)); + return rc; +} + +/* Stores a format 1 aib with 64 bytes */ +static inline int etr_stetr(struct etr_aib *aib) +{ + int rc = -ENOSYS; + + asm volatile( + " .insn s,0xb2170000,%1\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "+d" (rc) : "Q" (*aib)); + return rc; +} + +/* Stores a format 2 aib with 96 bytes for specified port */ +static inline int etr_steai(struct etr_aib *aib, unsigned int func) +{ + register unsigned int reg0 asm("0") = func; + int rc = -ENOSYS; + + asm volatile( + " .insn s,0xb2b30000,%1\n" + "0: la %0,0\n" + "1:\n" + EX_TABLE(0b,1b) + : "+d" (rc) : "Q" (*aib), "d" (reg0)); + return rc; +} + +/* Function codes for the steai instruction. */ +#define ETR_STEAI_STEPPING_PORT 0x10 +#define ETR_STEAI_ALTERNATE_PORT 0x11 +#define ETR_STEAI_PORT_0 0x12 +#define ETR_STEAI_PORT_1 0x13 + +static inline int etr_ptff(void *ptff_block, unsigned int func) +{ + register unsigned int reg0 asm("0") = func; + register unsigned long reg1 asm("1") = (unsigned long) ptff_block; + int rc = -ENOSYS; + + asm volatile( + " .word 0x0104\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (rc), "=m" (ptff_block) + : "d" (reg0), "d" (reg1), "m" (ptff_block) : "cc"); + return rc; +} + +/* Function codes for the ptff instruction. */ +#define ETR_PTFF_QAF 0x00 /* query available functions */ +#define ETR_PTFF_QTO 0x01 /* query tod offset */ +#define ETR_PTFF_QSI 0x02 /* query steering information */ +#define ETR_PTFF_ATO 0x40 /* adjust tod offset */ +#define ETR_PTFF_STO 0x41 /* set tod offset */ +#define ETR_PTFF_SFS 0x42 /* set fine steering rate */ +#define ETR_PTFF_SGS 0x43 /* set gross steering rate */ + +/* Functions needed by the machine check handler */ +void etr_switch_to_local(void); +void etr_sync_check(void); + +/* STP interruption parameter */ +struct stp_irq_parm { + unsigned int _pad0 : 14; + unsigned int tsc : 1; /* Timing status change */ + unsigned int lac : 1; /* Link availability change */ + unsigned int tcpc : 1; /* Time control parameter change */ + unsigned int _pad2 : 15; +} __attribute__ ((packed)); + +#define STP_OP_SYNC 1 +#define STP_OP_CTRL 3 + +struct stp_sstpi { + unsigned int rsvd0; + unsigned int rsvd1 : 8; + unsigned int stratum : 8; + unsigned int vbits : 16; + unsigned int leaps : 16; + unsigned int tmd : 4; + unsigned int ctn : 4; + unsigned int rsvd2 : 3; + unsigned int c : 1; + unsigned int tst : 4; + unsigned int tzo : 16; + unsigned int dsto : 16; + unsigned int ctrl : 16; + unsigned int rsvd3 : 16; + unsigned int tto; + unsigned int rsvd4; + unsigned int ctnid[3]; + unsigned int rsvd5; + unsigned int todoff[4]; + unsigned int rsvd6[48]; +} __attribute__ ((packed)); + +/* Functions needed by the machine check handler */ +void stp_sync_check(void); +void stp_island_check(void); + +#endif /* __S390_ETR_H */ diff --git a/arch/s390/include/asm/exec.h b/arch/s390/include/asm/exec.h new file mode 100644 index 00000000..c4a93d63 --- /dev/null +++ b/arch/s390/include/asm/exec.h @@ -0,0 +1,12 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_EXEC_H +#define __ASM_EXEC_H + +extern unsigned long arch_align_stack(unsigned long sp); + +#endif /* __ASM_EXEC_H */ diff --git a/arch/s390/include/asm/extmem.h b/arch/s390/include/asm/extmem.h new file mode 100644 index 00000000..33837d75 --- /dev/null +++ b/arch/s390/include/asm/extmem.h @@ -0,0 +1,33 @@ +/* + * include/asm-s390x/extmem.h + * + * definitions for external memory segment support + * Copyright (C) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation + */ + +#ifndef _ASM_S390X_DCSS_H +#define _ASM_S390X_DCSS_H +#ifndef __ASSEMBLY__ + +/* possible values for segment type as returned by segment_info */ +#define SEG_TYPE_SW 0 +#define SEG_TYPE_EW 1 +#define SEG_TYPE_SR 2 +#define SEG_TYPE_ER 3 +#define SEG_TYPE_SN 4 +#define SEG_TYPE_EN 5 +#define SEG_TYPE_SC 6 +#define SEG_TYPE_EWEN 7 + +#define SEGMENT_SHARED 0 +#define SEGMENT_EXCLUSIVE 1 + +int segment_load (char *name, int segtype, unsigned long *addr, unsigned long *length); +void segment_unload(char *name); +void segment_save(char *name); +int segment_type (char* name); +int segment_modify_shared (char *name, int do_nonshared); +void segment_warning(int rc, char *seg_name); + +#endif +#endif diff --git a/arch/s390/include/asm/facility.h b/arch/s390/include/asm/facility.h new file mode 100644 index 00000000..2ee66a65 --- /dev/null +++ b/arch/s390/include/asm/facility.h @@ -0,0 +1,62 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_FACILITY_H +#define __ASM_FACILITY_H + +#include <linux/string.h> +#include <linux/preempt.h> +#include <asm/lowcore.h> + +#define MAX_FACILITY_BIT (256*8) /* stfle_fac_list has 256 bytes */ + +/* + * The test_facility function uses the bit odering where the MSB is bit 0. + * That makes it easier to query facility bits with the bit number as + * documented in the Principles of Operation. + */ +static inline int test_facility(unsigned long nr) +{ + unsigned char *ptr; + + if (nr >= MAX_FACILITY_BIT) + return 0; + ptr = (unsigned char *) &S390_lowcore.stfle_fac_list + (nr >> 3); + return (*ptr & (0x80 >> (nr & 7))) != 0; +} + +/** + * stfle - Store facility list extended + * @stfle_fac_list: array where facility list can be stored + * @size: size of passed in array in double words + */ +static inline void stfle(u64 *stfle_fac_list, int size) +{ + unsigned long nr; + + preempt_disable(); + asm volatile( + " .insn s,0xb2b10000,0(0)\n" /* stfl */ + "0:\n" + EX_TABLE(0b, 0b) + : "+m" (S390_lowcore.stfl_fac_list)); + nr = 4; /* bytes stored by stfl */ + memcpy(stfle_fac_list, &S390_lowcore.stfl_fac_list, 4); + if (S390_lowcore.stfl_fac_list & 0x01000000) { + /* More facility bits available with stfle */ + register unsigned long reg0 asm("0") = size - 1; + + asm volatile(".insn s,0xb2b00000,0(%1)" /* stfle */ + : "+d" (reg0) + : "a" (stfle_fac_list) + : "memory", "cc"); + nr = (reg0 + 1) * 8; /* # bytes stored by stfle */ + } + memset((char *) stfle_fac_list + nr, 0, size * 8 - nr); + preempt_enable(); +} + +#endif /* __ASM_FACILITY_H */ diff --git a/arch/s390/include/asm/fb.h b/arch/s390/include/asm/fb.h new file mode 100644 index 00000000..c7df3803 --- /dev/null +++ b/arch/s390/include/asm/fb.h @@ -0,0 +1,12 @@ +#ifndef _ASM_FB_H_ +#define _ASM_FB_H_ +#include <linux/fb.h> + +#define fb_pgprotect(...) do {} while (0) + +static inline int fb_is_primary_device(struct fb_info *info) +{ + return 0; +} + +#endif /* _ASM_FB_H_ */ diff --git a/arch/s390/include/asm/fcntl.h b/arch/s390/include/asm/fcntl.h new file mode 100644 index 00000000..46ab12db --- /dev/null +++ b/arch/s390/include/asm/fcntl.h @@ -0,0 +1 @@ +#include <asm-generic/fcntl.h> diff --git a/arch/s390/include/asm/fcx.h b/arch/s390/include/asm/fcx.h new file mode 100644 index 00000000..ef617099 --- /dev/null +++ b/arch/s390/include/asm/fcx.h @@ -0,0 +1,311 @@ +/* + * Functions for assembling fcx enabled I/O control blocks. + * + * Copyright IBM Corp. 2008 + * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> + */ + +#ifndef _ASM_S390_FCX_H +#define _ASM_S390_FCX_H _ASM_S390_FCX_H + +#include <linux/types.h> + +#define TCW_FORMAT_DEFAULT 0 +#define TCW_TIDAW_FORMAT_DEFAULT 0 +#define TCW_FLAGS_INPUT_TIDA 1 << (23 - 5) +#define TCW_FLAGS_TCCB_TIDA 1 << (23 - 6) +#define TCW_FLAGS_OUTPUT_TIDA 1 << (23 - 7) +#define TCW_FLAGS_TIDAW_FORMAT(x) ((x) & 3) << (23 - 9) +#define TCW_FLAGS_GET_TIDAW_FORMAT(x) (((x) >> (23 - 9)) & 3) + +/** + * struct tcw - Transport Control Word (TCW) + * @format: TCW format + * @flags: TCW flags + * @tccbl: Transport-Command-Control-Block Length + * @r: Read Operations + * @w: Write Operations + * @output: Output-Data Address + * @input: Input-Data Address + * @tsb: Transport-Status-Block Address + * @tccb: Transport-Command-Control-Block Address + * @output_count: Output Count + * @input_count: Input Count + * @intrg: Interrogate TCW Address + */ +struct tcw { + u32 format:2; + u32 :6; + u32 flags:24; + u32 :8; + u32 tccbl:6; + u32 r:1; + u32 w:1; + u32 :16; + u64 output; + u64 input; + u64 tsb; + u64 tccb; + u32 output_count; + u32 input_count; + u32 :32; + u32 :32; + u32 :32; + u32 intrg; +} __attribute__ ((packed, aligned(64))); + +#define TIDAW_FLAGS_LAST 1 << (7 - 0) +#define TIDAW_FLAGS_SKIP 1 << (7 - 1) +#define TIDAW_FLAGS_DATA_INT 1 << (7 - 2) +#define TIDAW_FLAGS_TTIC 1 << (7 - 3) +#define TIDAW_FLAGS_INSERT_CBC 1 << (7 - 4) + +/** + * struct tidaw - Transport-Indirect-Addressing Word (TIDAW) + * @flags: TIDAW flags. Can be an arithmetic OR of the following constants: + * %TIDAW_FLAGS_LAST, %TIDAW_FLAGS_SKIP, %TIDAW_FLAGS_DATA_INT, + * %TIDAW_FLAGS_TTIC, %TIDAW_FLAGS_INSERT_CBC + * @count: Count + * @addr: Address + */ +struct tidaw { + u32 flags:8; + u32 :24; + u32 count; + u64 addr; +} __attribute__ ((packed, aligned(16))); + +/** + * struct tsa_iostat - I/O-Status Transport-Status Area (IO-Stat TSA) + * @dev_time: Device Time + * @def_time: Defer Time + * @queue_time: Queue Time + * @dev_busy_time: Device-Busy Time + * @dev_act_time: Device-Active-Only Time + * @sense: Sense Data (if present) + */ +struct tsa_iostat { + u32 dev_time; + u32 def_time; + u32 queue_time; + u32 dev_busy_time; + u32 dev_act_time; + u8 sense[32]; +} __attribute__ ((packed)); + +/** + * struct tsa_ddpcs - Device-Detected-Program-Check Transport-Status Area (DDPC TSA) + * @rc: Reason Code + * @rcq: Reason Code Qualifier + * @sense: Sense Data (if present) + */ +struct tsa_ddpc { + u32 :24; + u32 rc:8; + u8 rcq[16]; + u8 sense[32]; +} __attribute__ ((packed)); + +#define TSA_INTRG_FLAGS_CU_STATE_VALID 1 << (7 - 0) +#define TSA_INTRG_FLAGS_DEV_STATE_VALID 1 << (7 - 1) +#define TSA_INTRG_FLAGS_OP_STATE_VALID 1 << (7 - 2) + +/** + * struct tsa_intrg - Interrogate Transport-Status Area (Intrg. TSA) + * @format: Format + * @flags: Flags. Can be an arithmetic OR of the following constants: + * %TSA_INTRG_FLAGS_CU_STATE_VALID, %TSA_INTRG_FLAGS_DEV_STATE_VALID, + * %TSA_INTRG_FLAGS_OP_STATE_VALID + * @cu_state: Controle-Unit State + * @dev_state: Device State + * @op_state: Operation State + * @sd_info: State-Dependent Information + * @dl_id: Device-Level Identifier + * @dd_data: Device-Dependent Data + */ +struct tsa_intrg { + u32 format:8; + u32 flags:8; + u32 cu_state:8; + u32 dev_state:8; + u32 op_state:8; + u32 :24; + u8 sd_info[12]; + u32 dl_id; + u8 dd_data[28]; +} __attribute__ ((packed)); + +#define TSB_FORMAT_NONE 0 +#define TSB_FORMAT_IOSTAT 1 +#define TSB_FORMAT_DDPC 2 +#define TSB_FORMAT_INTRG 3 + +#define TSB_FLAGS_DCW_OFFSET_VALID 1 << (7 - 0) +#define TSB_FLAGS_COUNT_VALID 1 << (7 - 1) +#define TSB_FLAGS_CACHE_MISS 1 << (7 - 2) +#define TSB_FLAGS_TIME_VALID 1 << (7 - 3) +#define TSB_FLAGS_FORMAT(x) ((x) & 7) +#define TSB_FORMAT(t) ((t)->flags & 7) + +/** + * struct tsb - Transport-Status Block (TSB) + * @length: Length + * @flags: Flags. Can be an arithmetic OR of the following constants: + * %TSB_FLAGS_DCW_OFFSET_VALID, %TSB_FLAGS_COUNT_VALID, %TSB_FLAGS_CACHE_MISS, + * %TSB_FLAGS_TIME_VALID + * @dcw_offset: DCW Offset + * @count: Count + * @tsa: Transport-Status-Area + */ +struct tsb { + u32 length:8; + u32 flags:8; + u32 dcw_offset:16; + u32 count; + u32 :32; + union { + struct tsa_iostat iostat; + struct tsa_ddpc ddpc; + struct tsa_intrg intrg; + } __attribute__ ((packed)) tsa; +} __attribute__ ((packed, aligned(8))); + +#define DCW_INTRG_FORMAT_DEFAULT 0 + +#define DCW_INTRG_RC_UNSPECIFIED 0 +#define DCW_INTRG_RC_TIMEOUT 1 + +#define DCW_INTRG_RCQ_UNSPECIFIED 0 +#define DCW_INTRG_RCQ_PRIMARY 1 +#define DCW_INTRG_RCQ_SECONDARY 2 + +#define DCW_INTRG_FLAGS_MPM 1 < (7 - 0) +#define DCW_INTRG_FLAGS_PPR 1 < (7 - 1) +#define DCW_INTRG_FLAGS_CRIT 1 < (7 - 2) + +/** + * struct dcw_intrg_data - Interrogate DCW data + * @format: Format. Should be %DCW_INTRG_FORMAT_DEFAULT + * @rc: Reason Code. Can be one of %DCW_INTRG_RC_UNSPECIFIED, + * %DCW_INTRG_RC_TIMEOUT + * @rcq: Reason Code Qualifier: Can be one of %DCW_INTRG_RCQ_UNSPECIFIED, + * %DCW_INTRG_RCQ_PRIMARY, %DCW_INTRG_RCQ_SECONDARY + * @lpm: Logical-Path Mask + * @pam: Path-Available Mask + * @pim: Path-Installed Mask + * @timeout: Timeout + * @flags: Flags. Can be an arithmetic OR of %DCW_INTRG_FLAGS_MPM, + * %DCW_INTRG_FLAGS_PPR, %DCW_INTRG_FLAGS_CRIT + * @time: Time + * @prog_id: Program Identifier + * @prog_data: Program-Dependent Data + */ +struct dcw_intrg_data { + u32 format:8; + u32 rc:8; + u32 rcq:8; + u32 lpm:8; + u32 pam:8; + u32 pim:8; + u32 timeout:16; + u32 flags:8; + u32 :24; + u32 :32; + u64 time; + u64 prog_id; + u8 prog_data[0]; +} __attribute__ ((packed)); + +#define DCW_FLAGS_CC 1 << (7 - 1) + +#define DCW_CMD_WRITE 0x01 +#define DCW_CMD_READ 0x02 +#define DCW_CMD_CONTROL 0x03 +#define DCW_CMD_SENSE 0x04 +#define DCW_CMD_SENSE_ID 0xe4 +#define DCW_CMD_INTRG 0x40 + +/** + * struct dcw - Device-Command Word (DCW) + * @cmd: Command Code. Can be one of %DCW_CMD_WRITE, %DCW_CMD_READ, + * %DCW_CMD_CONTROL, %DCW_CMD_SENSE, %DCW_CMD_SENSE_ID, %DCW_CMD_INTRG + * @flags: Flags. Can be an arithmetic OR of %DCW_FLAGS_CC + * @cd_count: Control-Data Count + * @count: Count + * @cd: Control Data + */ +struct dcw { + u32 cmd:8; + u32 flags:8; + u32 :8; + u32 cd_count:8; + u32 count; + u8 cd[0]; +} __attribute__ ((packed)); + +#define TCCB_FORMAT_DEFAULT 0x7f +#define TCCB_MAX_DCW 30 +#define TCCB_MAX_SIZE (sizeof(struct tccb_tcah) + \ + TCCB_MAX_DCW * sizeof(struct dcw) + \ + sizeof(struct tccb_tcat)) +#define TCCB_SAC_DEFAULT 0x1ffe +#define TCCB_SAC_INTRG 0x1fff + +/** + * struct tccb_tcah - Transport-Command-Area Header (TCAH) + * @format: Format. Should be %TCCB_FORMAT_DEFAULT + * @tcal: Transport-Command-Area Length + * @sac: Service-Action Code. Can be one of %TCCB_SAC_DEFAULT, %TCCB_SAC_INTRG + * @prio: Priority + */ +struct tccb_tcah { + u32 format:8; + u32 :24; + u32 :24; + u32 tcal:8; + u32 sac:16; + u32 :8; + u32 prio:8; + u32 :32; +} __attribute__ ((packed)); + +/** + * struct tccb_tcat - Transport-Command-Area Trailer (TCAT) + * @count: Transport Count + */ +struct tccb_tcat { + u32 :32; + u32 count; +} __attribute__ ((packed)); + +/** + * struct tccb - (partial) Transport-Command-Control Block (TCCB) + * @tcah: TCAH + * @tca: Transport-Command Area + */ +struct tccb { + struct tccb_tcah tcah; + u8 tca[0]; +} __attribute__ ((packed, aligned(8))); + +struct tcw *tcw_get_intrg(struct tcw *tcw); +void *tcw_get_data(struct tcw *tcw); +struct tccb *tcw_get_tccb(struct tcw *tcw); +struct tsb *tcw_get_tsb(struct tcw *tcw); + +void tcw_init(struct tcw *tcw, int r, int w); +void tcw_finalize(struct tcw *tcw, int num_tidaws); + +void tcw_set_intrg(struct tcw *tcw, struct tcw *intrg_tcw); +void tcw_set_data(struct tcw *tcw, void *data, int use_tidal); +void tcw_set_tccb(struct tcw *tcw, struct tccb *tccb); +void tcw_set_tsb(struct tcw *tcw, struct tsb *tsb); + +void tccb_init(struct tccb *tccb, size_t tccb_size, u32 sac); +void tsb_init(struct tsb *tsb); +struct dcw *tccb_add_dcw(struct tccb *tccb, size_t tccb_size, u8 cmd, u8 flags, + void *cd, u8 cd_count, u32 count); +struct tidaw *tcw_add_tidaw(struct tcw *tcw, int num_tidaws, u8 flags, + void *addr, u32 count); + +#endif /* _ASM_S390_FCX_H */ diff --git a/arch/s390/include/asm/ftrace.h b/arch/s390/include/asm/ftrace.h new file mode 100644 index 00000000..b7931faa --- /dev/null +++ b/arch/s390/include/asm/ftrace.h @@ -0,0 +1,24 @@ +#ifndef _ASM_S390_FTRACE_H +#define _ASM_S390_FTRACE_H + +#ifndef __ASSEMBLY__ + +extern void _mcount(void); + +struct dyn_arch_ftrace { }; + +#define MCOUNT_ADDR ((long)_mcount) + +#ifdef CONFIG_64BIT +#define MCOUNT_INSN_SIZE 12 +#else +#define MCOUNT_INSN_SIZE 20 +#endif + +static inline unsigned long ftrace_call_adjust(unsigned long addr) +{ + return addr; +} + +#endif /* __ASSEMBLY__ */ +#endif /* _ASM_S390_FTRACE_H */ diff --git a/arch/s390/include/asm/futex.h b/arch/s390/include/asm/futex.h new file mode 100644 index 00000000..81cf36b6 --- /dev/null +++ b/arch/s390/include/asm/futex.h @@ -0,0 +1,52 @@ +#ifndef _ASM_S390_FUTEX_H +#define _ASM_S390_FUTEX_H + +#ifdef __KERNEL__ + +#include <linux/futex.h> +#include <linux/uaccess.h> +#include <asm/errno.h> + +static inline int futex_atomic_op_inuser (int encoded_op, u32 __user *uaddr) +{ + int op = (encoded_op >> 28) & 7; + int cmp = (encoded_op >> 24) & 15; + int oparg = (encoded_op << 8) >> 20; + int cmparg = (encoded_op << 20) >> 20; + int oldval, ret; + + if (encoded_op & (FUTEX_OP_OPARG_SHIFT << 28)) + oparg = 1 << oparg; + + if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32))) + return -EFAULT; + + pagefault_disable(); + ret = uaccess.futex_atomic_op(op, uaddr, oparg, &oldval); + pagefault_enable(); + + if (!ret) { + switch (cmp) { + case FUTEX_OP_CMP_EQ: ret = (oldval == cmparg); break; + case FUTEX_OP_CMP_NE: ret = (oldval != cmparg); break; + case FUTEX_OP_CMP_LT: ret = (oldval < cmparg); break; + case FUTEX_OP_CMP_GE: ret = (oldval >= cmparg); break; + case FUTEX_OP_CMP_LE: ret = (oldval <= cmparg); break; + case FUTEX_OP_CMP_GT: ret = (oldval > cmparg); break; + default: ret = -ENOSYS; + } + } + return ret; +} + +static inline int futex_atomic_cmpxchg_inatomic(u32 *uval, u32 __user *uaddr, + u32 oldval, u32 newval) +{ + if (! access_ok (VERIFY_WRITE, uaddr, sizeof(u32))) + return -EFAULT; + + return uaccess.futex_atomic_cmpxchg(uval, uaddr, oldval, newval); +} + +#endif /* __KERNEL__ */ +#endif /* _ASM_S390_FUTEX_H */ diff --git a/arch/s390/include/asm/hardirq.h b/arch/s390/include/asm/hardirq.h new file mode 100644 index 00000000..510ba9ef --- /dev/null +++ b/arch/s390/include/asm/hardirq.h @@ -0,0 +1,25 @@ +/* + * include/asm-s390/hardirq.h + * + * S390 version + * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), + * Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) + * + * Derived from "include/asm-i386/hardirq.h" + */ + +#ifndef __ASM_HARDIRQ_H +#define __ASM_HARDIRQ_H + +#include <asm/lowcore.h> + +#define local_softirq_pending() (S390_lowcore.softirq_pending) + +#define __ARCH_IRQ_STAT +#define __ARCH_HAS_DO_SOFTIRQ +#define __ARCH_IRQ_EXIT_IRQS_DISABLED + +#define HARDIRQ_BITS 8 + +#endif /* __ASM_HARDIRQ_H */ diff --git a/arch/s390/include/asm/hugetlb.h b/arch/s390/include/asm/hugetlb.h new file mode 100644 index 00000000..799ed0f1 --- /dev/null +++ b/arch/s390/include/asm/hugetlb.h @@ -0,0 +1,149 @@ +/* + * IBM System z Huge TLB Page Support for Kernel. + * + * Copyright IBM Corp. 2008 + * Author(s): Gerald Schaefer <gerald.schaefer@de.ibm.com> + */ + +#ifndef _ASM_S390_HUGETLB_H +#define _ASM_S390_HUGETLB_H + +#include <asm/page.h> +#include <asm/pgtable.h> + + +#define is_hugepage_only_range(mm, addr, len) 0 +#define hugetlb_free_pgd_range free_pgd_range + +void set_huge_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t pte); + +/* + * If the arch doesn't supply something else, assume that hugepage + * size aligned regions are ok without further preparation. + */ +static inline int prepare_hugepage_range(struct file *file, + unsigned long addr, unsigned long len) +{ + if (len & ~HPAGE_MASK) + return -EINVAL; + if (addr & ~HPAGE_MASK) + return -EINVAL; + return 0; +} + +#define hugetlb_prefault_arch_hook(mm) do { } while (0) + +int arch_prepare_hugepage(struct page *page); +void arch_release_hugepage(struct page *page); + +static inline pte_t huge_pte_wrprotect(pte_t pte) +{ + pte_val(pte) |= _PAGE_RO; + return pte; +} + +static inline int huge_pte_none(pte_t pte) +{ + return (pte_val(pte) & _SEGMENT_ENTRY_INV) && + !(pte_val(pte) & _SEGMENT_ENTRY_RO); +} + +static inline pte_t huge_ptep_get(pte_t *ptep) +{ + pte_t pte = *ptep; + unsigned long mask; + + if (!MACHINE_HAS_HPAGE) { + ptep = (pte_t *) (pte_val(pte) & _SEGMENT_ENTRY_ORIGIN); + if (ptep) { + mask = pte_val(pte) & + (_SEGMENT_ENTRY_INV | _SEGMENT_ENTRY_RO); + pte = pte_mkhuge(*ptep); + pte_val(pte) |= mask; + } + } + return pte; +} + +static inline pte_t huge_ptep_get_and_clear(struct mm_struct *mm, + unsigned long addr, pte_t *ptep) +{ + pte_t pte = huge_ptep_get(ptep); + + mm->context.flush_mm = 1; + pmd_clear((pmd_t *) ptep); + return pte; +} + +static inline void __pmd_csp(pmd_t *pmdp) +{ + register unsigned long reg2 asm("2") = pmd_val(*pmdp); + register unsigned long reg3 asm("3") = pmd_val(*pmdp) | + _SEGMENT_ENTRY_INV; + register unsigned long reg4 asm("4") = ((unsigned long) pmdp) + 5; + + asm volatile( + " csp %1,%3" + : "=m" (*pmdp) + : "d" (reg2), "d" (reg3), "d" (reg4), "m" (*pmdp) : "cc"); + pmd_val(*pmdp) = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY; +} + +static inline void __pmd_idte(unsigned long address, pmd_t *pmdp) +{ + unsigned long sto = (unsigned long) pmdp - + pmd_index(address) * sizeof(pmd_t); + + if (!(pmd_val(*pmdp) & _SEGMENT_ENTRY_INV)) { + asm volatile( + " .insn rrf,0xb98e0000,%2,%3,0,0" + : "=m" (*pmdp) + : "m" (*pmdp), "a" (sto), + "a" ((address & HPAGE_MASK)) + ); + } + pmd_val(*pmdp) = _SEGMENT_ENTRY_INV | _SEGMENT_ENTRY; +} + +static inline void huge_ptep_invalidate(struct mm_struct *mm, + unsigned long address, pte_t *ptep) +{ + pmd_t *pmdp = (pmd_t *) ptep; + + if (MACHINE_HAS_IDTE) + __pmd_idte(address, pmdp); + else + __pmd_csp(pmdp); +} + +#define huge_ptep_set_access_flags(__vma, __addr, __ptep, __entry, __dirty) \ +({ \ + int __changed = !pte_same(huge_ptep_get(__ptep), __entry); \ + if (__changed) { \ + huge_ptep_invalidate((__vma)->vm_mm, __addr, __ptep); \ + set_huge_pte_at((__vma)->vm_mm, __addr, __ptep, __entry); \ + } \ + __changed; \ +}) + +#define huge_ptep_set_wrprotect(__mm, __addr, __ptep) \ +({ \ + pte_t __pte = huge_ptep_get(__ptep); \ + if (pte_write(__pte)) { \ + (__mm)->context.flush_mm = 1; \ + if (atomic_read(&(__mm)->context.attach_count) > 1 || \ + (__mm) != current->active_mm) \ + huge_ptep_invalidate(__mm, __addr, __ptep); \ + set_huge_pte_at(__mm, __addr, __ptep, \ + huge_pte_wrprotect(__pte)); \ + } \ +}) + +static inline void huge_ptep_clear_flush(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) +{ + huge_ptep_invalidate(vma->vm_mm, address, ptep); +} + +#endif /* _ASM_S390_HUGETLB_H */ diff --git a/arch/s390/include/asm/idals.h b/arch/s390/include/asm/idals.h new file mode 100644 index 00000000..aae276d0 --- /dev/null +++ b/arch/s390/include/asm/idals.h @@ -0,0 +1,249 @@ +/* + * File...........: linux/include/asm-s390x/idals.h + * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com> + * Martin Schwidefsky <schwidefsky@de.ibm.com> + * Bugreports.to..: <Linux390@de.ibm.com> + * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 2000a + + * History of changes + * 07/24/00 new file + * 05/04/02 code restructuring. + */ + +#ifndef _S390_IDALS_H +#define _S390_IDALS_H + +#include <linux/errno.h> +#include <linux/err.h> +#include <linux/types.h> +#include <linux/slab.h> +#include <asm/cio.h> +#include <asm/uaccess.h> + +#ifdef __s390x__ +#define IDA_SIZE_LOG 12 /* 11 for 2k , 12 for 4k */ +#else +#define IDA_SIZE_LOG 11 /* 11 for 2k , 12 for 4k */ +#endif +#define IDA_BLOCK_SIZE (1L<<IDA_SIZE_LOG) + +/* + * Test if an address/length pair needs an idal list. + */ +static inline int +idal_is_needed(void *vaddr, unsigned int length) +{ +#ifdef __s390x__ + return ((__pa(vaddr) + length - 1) >> 31) != 0; +#else + return 0; +#endif +} + + +/* + * Return the number of idal words needed for an address/length pair. + */ +static inline unsigned int idal_nr_words(void *vaddr, unsigned int length) +{ + return ((__pa(vaddr) & (IDA_BLOCK_SIZE-1)) + length + + (IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG; +} + +/* + * Create the list of idal words for an address/length pair. + */ +static inline unsigned long *idal_create_words(unsigned long *idaws, + void *vaddr, unsigned int length) +{ + unsigned long paddr; + unsigned int cidaw; + + paddr = __pa(vaddr); + cidaw = ((paddr & (IDA_BLOCK_SIZE-1)) + length + + (IDA_BLOCK_SIZE-1)) >> IDA_SIZE_LOG; + *idaws++ = paddr; + paddr &= -IDA_BLOCK_SIZE; + while (--cidaw > 0) { + paddr += IDA_BLOCK_SIZE; + *idaws++ = paddr; + } + return idaws; +} + +/* + * Sets the address of the data in CCW. + * If necessary it allocates an IDAL and sets the appropriate flags. + */ +static inline int +set_normalized_cda(struct ccw1 * ccw, void *vaddr) +{ +#ifdef __s390x__ + unsigned int nridaws; + unsigned long *idal; + + if (ccw->flags & CCW_FLAG_IDA) + return -EINVAL; + nridaws = idal_nr_words(vaddr, ccw->count); + if (nridaws > 0) { + idal = kmalloc(nridaws * sizeof(unsigned long), + GFP_ATOMIC | GFP_DMA ); + if (idal == NULL) + return -ENOMEM; + idal_create_words(idal, vaddr, ccw->count); + ccw->flags |= CCW_FLAG_IDA; + vaddr = idal; + } +#endif + ccw->cda = (__u32)(unsigned long) vaddr; + return 0; +} + +/* + * Releases any allocated IDAL related to the CCW. + */ +static inline void +clear_normalized_cda(struct ccw1 * ccw) +{ +#ifdef __s390x__ + if (ccw->flags & CCW_FLAG_IDA) { + kfree((void *)(unsigned long) ccw->cda); + ccw->flags &= ~CCW_FLAG_IDA; + } +#endif + ccw->cda = 0; +} + +/* + * Idal buffer extension + */ +struct idal_buffer { + size_t size; + size_t page_order; + void *data[0]; +}; + +/* + * Allocate an idal buffer + */ +static inline struct idal_buffer * +idal_buffer_alloc(size_t size, int page_order) +{ + struct idal_buffer *ib; + int nr_chunks, nr_ptrs, i; + + nr_ptrs = (size + IDA_BLOCK_SIZE - 1) >> IDA_SIZE_LOG; + nr_chunks = (4096 << page_order) >> IDA_SIZE_LOG; + ib = kmalloc(sizeof(struct idal_buffer) + nr_ptrs*sizeof(void *), + GFP_DMA | GFP_KERNEL); + if (ib == NULL) + return ERR_PTR(-ENOMEM); + ib->size = size; + ib->page_order = page_order; + for (i = 0; i < nr_ptrs; i++) { + if ((i & (nr_chunks - 1)) != 0) { + ib->data[i] = ib->data[i-1] + IDA_BLOCK_SIZE; + continue; + } + ib->data[i] = (void *) + __get_free_pages(GFP_KERNEL, page_order); + if (ib->data[i] != NULL) + continue; + // Not enough memory + while (i >= nr_chunks) { + i -= nr_chunks; + free_pages((unsigned long) ib->data[i], + ib->page_order); + } + kfree(ib); + return ERR_PTR(-ENOMEM); + } + return ib; +} + +/* + * Free an idal buffer. + */ +static inline void +idal_buffer_free(struct idal_buffer *ib) +{ + int nr_chunks, nr_ptrs, i; + + nr_ptrs = (ib->size + IDA_BLOCK_SIZE - 1) >> IDA_SIZE_LOG; + nr_chunks = (4096 << ib->page_order) >> IDA_SIZE_LOG; + for (i = 0; i < nr_ptrs; i += nr_chunks) + free_pages((unsigned long) ib->data[i], ib->page_order); + kfree(ib); +} + +/* + * Test if a idal list is really needed. + */ +static inline int +__idal_buffer_is_needed(struct idal_buffer *ib) +{ +#ifdef __s390x__ + return ib->size > (4096ul << ib->page_order) || + idal_is_needed(ib->data[0], ib->size); +#else + return ib->size > (4096ul << ib->page_order); +#endif +} + +/* + * Set channel data address to idal buffer. + */ +static inline void +idal_buffer_set_cda(struct idal_buffer *ib, struct ccw1 *ccw) +{ + if (__idal_buffer_is_needed(ib)) { + // setup idals; + ccw->cda = (u32)(addr_t) ib->data; + ccw->flags |= CCW_FLAG_IDA; + } else + // we do not need idals - use direct addressing + ccw->cda = (u32)(addr_t) ib->data[0]; + ccw->count = ib->size; +} + +/* + * Copy count bytes from an idal buffer to user memory + */ +static inline size_t +idal_buffer_to_user(struct idal_buffer *ib, void __user *to, size_t count) +{ + size_t left; + int i; + + BUG_ON(count > ib->size); + for (i = 0; count > IDA_BLOCK_SIZE; i++) { + left = copy_to_user(to, ib->data[i], IDA_BLOCK_SIZE); + if (left) + return left + count - IDA_BLOCK_SIZE; + to = (void __user *) to + IDA_BLOCK_SIZE; + count -= IDA_BLOCK_SIZE; + } + return copy_to_user(to, ib->data[i], count); +} + +/* + * Copy count bytes from user memory to an idal buffer + */ +static inline size_t +idal_buffer_from_user(struct idal_buffer *ib, const void __user *from, size_t count) +{ + size_t left; + int i; + + BUG_ON(count > ib->size); + for (i = 0; count > IDA_BLOCK_SIZE; i++) { + left = copy_from_user(ib->data[i], from, IDA_BLOCK_SIZE); + if (left) + return left + count - IDA_BLOCK_SIZE; + from = (void __user *) from + IDA_BLOCK_SIZE; + count -= IDA_BLOCK_SIZE; + } + return copy_from_user(ib->data[i], from, count); +} + +#endif diff --git a/arch/s390/include/asm/io.h b/arch/s390/include/asm/io.h new file mode 100644 index 00000000..b7ff6afc --- /dev/null +++ b/arch/s390/include/asm/io.h @@ -0,0 +1,54 @@ +/* + * include/asm-s390/io.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/io.h" + */ + +#ifndef _S390_IO_H +#define _S390_IO_H + +#ifdef __KERNEL__ + +#include <asm/page.h> + +#define IO_SPACE_LIMIT 0xffffffff + +/* + * Change virtual addresses to physical addresses and vv. + * These are pretty trivial + */ +static inline unsigned long virt_to_phys(volatile void * address) +{ + unsigned long real_address; + asm volatile( + " lra %0,0(%1)\n" + " jz 0f\n" + " la %0,0\n" + "0:" + : "=a" (real_address) : "a" (address) : "cc"); + return real_address; +} + +static inline void * phys_to_virt(unsigned long address) +{ + return (void *) address; +} + +/* + * Convert a physical pointer to a virtual kernel pointer for /dev/mem + * access + */ +#define xlate_dev_mem_ptr(p) __va(p) + +/* + * Convert a virtual cached pointer to an uncached pointer + */ +#define xlate_dev_kmem_ptr(p) p + +#endif /* __KERNEL__ */ + +#endif diff --git a/arch/s390/include/asm/ioctl.h b/arch/s390/include/asm/ioctl.h new file mode 100644 index 00000000..b279fe06 --- /dev/null +++ b/arch/s390/include/asm/ioctl.h @@ -0,0 +1 @@ +#include <asm-generic/ioctl.h> diff --git a/arch/s390/include/asm/ioctls.h b/arch/s390/include/asm/ioctls.h new file mode 100644 index 00000000..960a4c1e --- /dev/null +++ b/arch/s390/include/asm/ioctls.h @@ -0,0 +1,8 @@ +#ifndef __ARCH_S390_IOCTLS_H__ +#define __ARCH_S390_IOCTLS_H__ + +#define FIOQSIZE 0x545E + +#include <asm-generic/ioctls.h> + +#endif diff --git a/arch/s390/include/asm/ipcbuf.h b/arch/s390/include/asm/ipcbuf.h new file mode 100644 index 00000000..37f293d1 --- /dev/null +++ b/arch/s390/include/asm/ipcbuf.h @@ -0,0 +1,31 @@ +#ifndef __S390_IPCBUF_H__ +#define __S390_IPCBUF_H__ + +/* + * The user_ipc_perm structure for S/390 architecture. + * Note extra padding because this structure is passed back and forth + * between kernel and user space. + * + * Pad space is left for: + * - 32-bit mode_t and seq + * - 2 miscellaneous 32-bit values + */ + +struct ipc64_perm +{ + __kernel_key_t key; + __kernel_uid32_t uid; + __kernel_gid32_t gid; + __kernel_uid32_t cuid; + __kernel_gid32_t cgid; + __kernel_mode_t mode; + unsigned short __pad1; + unsigned short seq; +#ifndef __s390x__ + unsigned short __pad2; +#endif /* ! __s390x__ */ + unsigned long __unused1; + unsigned long __unused2; +}; + +#endif /* __S390_IPCBUF_H__ */ diff --git a/arch/s390/include/asm/ipl.h b/arch/s390/include/asm/ipl.h new file mode 100644 index 00000000..2bd6cb89 --- /dev/null +++ b/arch/s390/include/asm/ipl.h @@ -0,0 +1,174 @@ +/* + * s390 (re)ipl support + * + * Copyright IBM Corp. 2007 + */ + +#ifndef _ASM_S390_IPL_H +#define _ASM_S390_IPL_H + +#include <asm/types.h> +#include <asm/cio.h> +#include <asm/setup.h> + +#define IPL_PARMBLOCK_ORIGIN 0x2000 + +#define IPL_PARM_BLK_FCP_LEN (sizeof(struct ipl_list_hdr) + \ + sizeof(struct ipl_block_fcp)) + +#define IPL_PARM_BLK0_FCP_LEN (sizeof(struct ipl_block_fcp) + 8) + +#define IPL_PARM_BLK_CCW_LEN (sizeof(struct ipl_list_hdr) + \ + sizeof(struct ipl_block_ccw)) + +#define IPL_PARM_BLK0_CCW_LEN (sizeof(struct ipl_block_ccw) + 8) + +#define IPL_MAX_SUPPORTED_VERSION (0) + +#define IPL_PARMBLOCK_START ((struct ipl_parameter_block *) \ + IPL_PARMBLOCK_ORIGIN) +#define IPL_PARMBLOCK_SIZE (IPL_PARMBLOCK_START->hdr.len) + +struct ipl_list_hdr { + u32 len; + u8 reserved1[3]; + u8 version; + u32 blk0_len; + u8 pbt; + u8 flags; + u16 reserved2; +} __attribute__((packed)); + +struct ipl_block_fcp { + u8 reserved1[313-1]; + u8 opt; + u8 reserved2[3]; + u16 reserved3; + u16 devno; + u8 reserved4[4]; + u64 wwpn; + u64 lun; + u32 bootprog; + u8 reserved5[12]; + u64 br_lba; + u32 scp_data_len; + u8 reserved6[260]; + u8 scp_data[]; +} __attribute__((packed)); + +#define DIAG308_VMPARM_SIZE 64 +#define DIAG308_SCPDATA_SIZE (PAGE_SIZE - (sizeof(struct ipl_list_hdr) + \ + offsetof(struct ipl_block_fcp, scp_data))) + +struct ipl_block_ccw { + u8 load_parm[8]; + u8 reserved1[84]; + u8 reserved2[2]; + u16 devno; + u8 vm_flags; + u8 reserved3[3]; + u32 vm_parm_len; + u8 nss_name[8]; + u8 vm_parm[DIAG308_VMPARM_SIZE]; + u8 reserved4[8]; +} __attribute__((packed)); + +struct ipl_parameter_block { + struct ipl_list_hdr hdr; + union { + struct ipl_block_fcp fcp; + struct ipl_block_ccw ccw; + } ipl_info; +} __attribute__((packed,aligned(4096))); + +/* + * IPL validity flags + */ +extern u32 ipl_flags; +extern u32 dump_prefix_page; +extern unsigned int zfcpdump_prefix_array[]; + +extern void do_reipl(void); +extern void do_halt(void); +extern void do_poff(void); +extern void ipl_save_parameters(void); +extern void ipl_update_parameters(void); +extern size_t append_ipl_vmparm(char *, size_t); +extern size_t append_ipl_scpdata(char *, size_t); + +enum { + IPL_DEVNO_VALID = 1, + IPL_PARMBLOCK_VALID = 2, + IPL_NSS_VALID = 4, +}; + +enum ipl_type { + IPL_TYPE_UNKNOWN = 1, + IPL_TYPE_CCW = 2, + IPL_TYPE_FCP = 4, + IPL_TYPE_FCP_DUMP = 8, + IPL_TYPE_NSS = 16, +}; + +struct ipl_info +{ + enum ipl_type type; + union { + struct { + struct ccw_dev_id dev_id; + } ccw; + struct { + struct ccw_dev_id dev_id; + u64 wwpn; + u64 lun; + } fcp; + struct { + char name[NSS_NAME_SIZE + 1]; + } nss; + } data; +}; + +extern struct ipl_info ipl_info; +extern void setup_ipl(void); + +/* + * DIAG 308 support + */ +enum diag308_subcode { + DIAG308_REL_HSA = 2, + DIAG308_IPL = 3, + DIAG308_DUMP = 4, + DIAG308_SET = 5, + DIAG308_STORE = 6, +}; + +enum diag308_ipl_type { + DIAG308_IPL_TYPE_FCP = 0, + DIAG308_IPL_TYPE_CCW = 2, +}; + +enum diag308_opt { + DIAG308_IPL_OPT_IPL = 0x10, + DIAG308_IPL_OPT_DUMP = 0x20, +}; + +enum diag308_flags { + DIAG308_FLAGS_LP_VALID = 0x80, +}; + +enum diag308_vm_flags { + DIAG308_VM_FLAGS_NSS_VALID = 0x80, + DIAG308_VM_FLAGS_VP_VALID = 0x40, +}; + +enum diag308_rc { + DIAG308_RC_OK = 0x0001, + DIAG308_RC_NOCONFIG = 0x0102, +}; + +extern int diag308(unsigned long subcode, void *addr); +extern void diag308_reset(void); +extern void store_status(void); +extern void lgr_info_log(void); + +#endif /* _ASM_S390_IPL_H */ diff --git a/arch/s390/include/asm/irq.h b/arch/s390/include/asm/irq.h new file mode 100644 index 00000000..5289cacd --- /dev/null +++ b/arch/s390/include/asm/irq.h @@ -0,0 +1,51 @@ +#ifndef _ASM_IRQ_H +#define _ASM_IRQ_H + +#include <linux/hardirq.h> +#include <linux/types.h> + +enum interruption_class { + EXTERNAL_INTERRUPT, + IO_INTERRUPT, + EXTINT_CLK, + EXTINT_EXC, + EXTINT_EMS, + EXTINT_TMR, + EXTINT_TLA, + EXTINT_PFL, + EXTINT_DSD, + EXTINT_VRT, + EXTINT_SCP, + EXTINT_IUC, + EXTINT_CPM, + IOINT_CIO, + IOINT_QAI, + IOINT_DAS, + IOINT_C15, + IOINT_C70, + IOINT_TAP, + IOINT_VMR, + IOINT_LCS, + IOINT_CLW, + IOINT_CTC, + IOINT_APB, + IOINT_CSC, + NMI_NMI, + NR_IRQS, +}; + +struct ext_code { + unsigned short subcode; + unsigned short code; +}; + +typedef void (*ext_int_handler_t)(struct ext_code, unsigned int, unsigned long); + +int register_external_interrupt(u16 code, ext_int_handler_t handler); +int unregister_external_interrupt(u16 code, ext_int_handler_t handler); +void service_subclass_irq_register(void); +void service_subclass_irq_unregister(void); +void measurement_alert_subclass_register(void); +void measurement_alert_subclass_unregister(void); + +#endif /* _ASM_IRQ_H */ diff --git a/arch/s390/include/asm/irq_regs.h b/arch/s390/include/asm/irq_regs.h new file mode 100644 index 00000000..3dd9c0b7 --- /dev/null +++ b/arch/s390/include/asm/irq_regs.h @@ -0,0 +1 @@ +#include <asm-generic/irq_regs.h> diff --git a/arch/s390/include/asm/irqflags.h b/arch/s390/include/asm/irqflags.h new file mode 100644 index 00000000..38fdf451 --- /dev/null +++ b/arch/s390/include/asm/irqflags.h @@ -0,0 +1,72 @@ +/* + * Copyright IBM Corp. 2006,2010 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_IRQFLAGS_H +#define __ASM_IRQFLAGS_H + +#include <linux/types.h> + +/* store then OR system mask. */ +#define __arch_local_irq_stosm(__or) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stosm %0,%1" \ + : "=Q" (__mask) : "i" (__or) : "memory"); \ + __mask; \ +}) + +/* store then AND system mask. */ +#define __arch_local_irq_stnsm(__and) \ +({ \ + unsigned long __mask; \ + asm volatile( \ + " stnsm %0,%1" \ + : "=Q" (__mask) : "i" (__and) : "memory"); \ + __mask; \ +}) + +/* set system mask. */ +static inline notrace void __arch_local_irq_ssm(unsigned long flags) +{ + asm volatile("ssm %0" : : "Q" (flags) : "memory"); +} + +static inline notrace unsigned long arch_local_save_flags(void) +{ + return __arch_local_irq_stosm(0x00); +} + +static inline notrace unsigned long arch_local_irq_save(void) +{ + return __arch_local_irq_stnsm(0xfc); +} + +static inline notrace void arch_local_irq_disable(void) +{ + arch_local_irq_save(); +} + +static inline notrace void arch_local_irq_enable(void) +{ + __arch_local_irq_stosm(0x03); +} + +static inline notrace void arch_local_irq_restore(unsigned long flags) +{ + __arch_local_irq_ssm(flags); +} + +static inline notrace bool arch_irqs_disabled_flags(unsigned long flags) +{ + return !(flags & (3UL << (BITS_PER_LONG - 8))); +} + +static inline notrace bool arch_irqs_disabled(void) +{ + return arch_irqs_disabled_flags(arch_local_save_flags()); +} + +#endif /* __ASM_IRQFLAGS_H */ diff --git a/arch/s390/include/asm/isc.h b/arch/s390/include/asm/isc.h new file mode 100644 index 00000000..1420a111 --- /dev/null +++ b/arch/s390/include/asm/isc.h @@ -0,0 +1,26 @@ +#ifndef _ASM_S390_ISC_H +#define _ASM_S390_ISC_H + +#include <linux/types.h> + +/* + * I/O interruption subclasses used by drivers. + * Please add all used iscs here so that it is possible to distribute + * isc usage between drivers. + * Reminder: 0 is highest priority, 7 lowest. + */ +#define MAX_ISC 7 + +/* Regular I/O interrupts. */ +#define IO_SCH_ISC 3 /* regular I/O subchannels */ +#define CONSOLE_ISC 1 /* console I/O subchannel */ +#define CHSC_SCH_ISC 7 /* CHSC subchannels */ +/* Adapter interrupts. */ +#define QDIO_AIRQ_ISC IO_SCH_ISC /* I/O subchannel in qdio mode */ +#define AP_ISC 6 /* adjunct processor (crypto) devices */ + +/* Functions for registration of I/O interruption subclasses */ +void isc_register(unsigned int isc); +void isc_unregister(unsigned int isc); + +#endif /* _ASM_S390_ISC_H */ diff --git a/arch/s390/include/asm/itcw.h b/arch/s390/include/asm/itcw.h new file mode 100644 index 00000000..fb1bedd3 --- /dev/null +++ b/arch/s390/include/asm/itcw.h @@ -0,0 +1,30 @@ +/* + * Functions for incremental construction of fcx enabled I/O control blocks. + * + * Copyright IBM Corp. 2008 + * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> + */ + +#ifndef _ASM_S390_ITCW_H +#define _ASM_S390_ITCW_H + +#include <linux/types.h> +#include <asm/fcx.h> + +#define ITCW_OP_READ 0 +#define ITCW_OP_WRITE 1 + +struct itcw; + +struct tcw *itcw_get_tcw(struct itcw *itcw); +size_t itcw_calc_size(int intrg, int max_tidaws, int intrg_max_tidaws); +struct itcw *itcw_init(void *buffer, size_t size, int op, int intrg, + int max_tidaws, int intrg_max_tidaws); +struct dcw *itcw_add_dcw(struct itcw *itcw, u8 cmd, u8 flags, void *cd, + u8 cd_count, u32 count); +struct tidaw *itcw_add_tidaw(struct itcw *itcw, u8 flags, void *addr, + u32 count); +void itcw_set_data(struct itcw *itcw, void *addr, int use_tidal); +void itcw_finalize(struct itcw *itcw); + +#endif /* _ASM_S390_ITCW_H */ diff --git a/arch/s390/include/asm/jump_label.h b/arch/s390/include/asm/jump_label.h new file mode 100644 index 00000000..6c32190d --- /dev/null +++ b/arch/s390/include/asm/jump_label.h @@ -0,0 +1,37 @@ +#ifndef _ASM_S390_JUMP_LABEL_H +#define _ASM_S390_JUMP_LABEL_H + +#include <linux/types.h> + +#define JUMP_LABEL_NOP_SIZE 6 + +#ifdef CONFIG_64BIT +#define ASM_PTR ".quad" +#define ASM_ALIGN ".balign 8" +#else +#define ASM_PTR ".long" +#define ASM_ALIGN ".balign 4" +#endif + +static __always_inline bool arch_static_branch(struct static_key *key) +{ + asm goto("0: brcl 0,0\n" + ".pushsection __jump_table, \"aw\"\n" + ASM_ALIGN "\n" + ASM_PTR " 0b, %l[label], %0\n" + ".popsection\n" + : : "X" (key) : : label); + return false; +label: + return true; +} + +typedef unsigned long jump_label_t; + +struct jump_entry { + jump_label_t code; + jump_label_t target; + jump_label_t key; +}; + +#endif diff --git a/arch/s390/include/asm/kdebug.h b/arch/s390/include/asm/kdebug.h new file mode 100644 index 00000000..5c1abd47 --- /dev/null +++ b/arch/s390/include/asm/kdebug.h @@ -0,0 +1,27 @@ +#ifndef _S390_KDEBUG_H +#define _S390_KDEBUG_H + +/* + * Feb 2006 Ported to s390 <grundym@us.ibm.com> + */ + +struct pt_regs; + +enum die_val { + DIE_OOPS = 1, + DIE_BPT, + DIE_SSTEP, + DIE_PANIC, + DIE_NMI, + DIE_DIE, + DIE_NMIWATCHDOG, + DIE_KERNELDEBUG, + DIE_TRAP, + DIE_GPF, + DIE_CALL, + DIE_NMI_IPI, +}; + +extern void die(struct pt_regs *, const char *); + +#endif diff --git a/arch/s390/include/asm/kexec.h b/arch/s390/include/asm/kexec.h new file mode 100644 index 00000000..3f30dac8 --- /dev/null +++ b/arch/s390/include/asm/kexec.h @@ -0,0 +1,67 @@ +/* + * include/asm-s390/kexec.h + * + * (C) Copyright IBM Corp. 2005 + * + * Author(s): Rolf Adelsberger <adelsberger@de.ibm.com> + * + */ + +#ifndef _S390_KEXEC_H +#define _S390_KEXEC_H + +#ifdef __KERNEL__ +#include <asm/page.h> +#endif +#include <asm/processor.h> +/* + * KEXEC_SOURCE_MEMORY_LIMIT maximum page get_free_page can return. + * I.e. Maximum page that is mapped directly into kernel memory, + * and kmap is not required. + */ + +/* Maximum physical address we can use pages from */ +#define KEXEC_SOURCE_MEMORY_LIMIT (-1UL) + +/* Maximum address we can reach in physical address mode */ +#define KEXEC_DESTINATION_MEMORY_LIMIT (-1UL) + +/* Maximum address we can use for the control pages */ +/* Not more than 2GB */ +#define KEXEC_CONTROL_MEMORY_LIMIT (1UL<<31) + +/* Maximum address we can use for the crash control pages */ +#define KEXEC_CRASH_CONTROL_MEMORY_LIMIT (-1UL) + +/* Allocate one page for the pdp and the second for the code */ +#define KEXEC_CONTROL_PAGE_SIZE 4096 + +/* Alignment of crashkernel memory */ +#define KEXEC_CRASH_MEM_ALIGN HPAGE_SIZE + +/* The native architecture */ +#define KEXEC_ARCH KEXEC_ARCH_S390 + +/* + * Size for s390x ELF notes per CPU + * + * Seven notes plus zero note at the end: prstatus, fpregset, timer, + * tod_cmp, tod_reg, control regs, and prefix + */ +#define KEXEC_NOTE_BYTES \ + (ALIGN(sizeof(struct elf_note), 4) * 8 + \ + ALIGN(sizeof("CORE"), 4) * 7 + \ + ALIGN(sizeof(struct elf_prstatus), 4) + \ + ALIGN(sizeof(elf_fpregset_t), 4) + \ + ALIGN(sizeof(u64), 4) + \ + ALIGN(sizeof(u64), 4) + \ + ALIGN(sizeof(u32), 4) + \ + ALIGN(sizeof(u64) * 16, 4) + \ + ALIGN(sizeof(u32), 4) \ + ) + +/* Provide a dummy definition to avoid build failures. */ +static inline void crash_setup_regs(struct pt_regs *newregs, + struct pt_regs *oldregs) { } + +#endif /*_S390_KEXEC_H */ diff --git a/arch/s390/include/asm/kmap_types.h b/arch/s390/include/asm/kmap_types.h new file mode 100644 index 00000000..94ec3ee0 --- /dev/null +++ b/arch/s390/include/asm/kmap_types.h @@ -0,0 +1,8 @@ +#ifdef __KERNEL__ +#ifndef _ASM_KMAP_TYPES_H +#define _ASM_KMAP_TYPES_H + +#include <asm-generic/kmap_types.h> + +#endif +#endif /* __KERNEL__ */ diff --git a/arch/s390/include/asm/kprobes.h b/arch/s390/include/asm/kprobes.h new file mode 100644 index 00000000..a231a943 --- /dev/null +++ b/arch/s390/include/asm/kprobes.h @@ -0,0 +1,87 @@ +#ifndef _ASM_S390_KPROBES_H +#define _ASM_S390_KPROBES_H +/* + * Kernel Probes (KProbes) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + * + * Copyright (C) IBM Corporation, 2002, 2006 + * + * 2002-Oct Created by Vamsi Krishna S <vamsi_krishna@in.ibm.com> Kernel + * Probes initial implementation ( includes suggestions from + * Rusty Russell). + * 2004-Nov Modified for PPC64 by Ananth N Mavinakayanahalli + * <ananth@in.ibm.com> + * 2005-Dec Used as a template for s390 by Mike Grundy + * <grundym@us.ibm.com> + */ +#include <linux/types.h> +#include <linux/ptrace.h> +#include <linux/percpu.h> + +struct pt_regs; +struct kprobe; + +typedef u16 kprobe_opcode_t; +#define BREAKPOINT_INSTRUCTION 0x0002 + +/* Maximum instruction size is 3 (16bit) halfwords: */ +#define MAX_INSN_SIZE 0x0003 +#define MAX_STACK_SIZE 64 +#define MIN_STACK_SIZE(ADDR) (((MAX_STACK_SIZE) < \ + (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) \ + ? (MAX_STACK_SIZE) \ + : (((unsigned long)current_thread_info()) + THREAD_SIZE - (ADDR))) + +#define kretprobe_blacklist_size 0 + +#define KPROBE_SWAP_INST 0x10 + +#define FIXUP_PSW_NORMAL 0x08 +#define FIXUP_BRANCH_NOT_TAKEN 0x04 +#define FIXUP_RETURN_REGISTER 0x02 +#define FIXUP_NOT_REQUIRED 0x01 + +/* Architecture specific copy of original instruction */ +struct arch_specific_insn { + /* copy of original instruction */ + kprobe_opcode_t insn[MAX_INSN_SIZE]; +}; + +struct prev_kprobe { + struct kprobe *kp; + unsigned long status; +}; + +/* per-cpu kprobe control block */ +struct kprobe_ctlblk { + unsigned long kprobe_status; + unsigned long kprobe_saved_imask; + unsigned long kprobe_saved_ctl[3]; + struct prev_kprobe prev_kprobe; + struct pt_regs jprobe_saved_regs; + kprobe_opcode_t jprobes_stack[MAX_STACK_SIZE]; +}; + +void arch_remove_kprobe(struct kprobe *p); +void kretprobe_trampoline(void); + +int kprobe_fault_handler(struct pt_regs *regs, int trapnr); +int kprobe_exceptions_notify(struct notifier_block *self, + unsigned long val, void *data); + +#define flush_insn_slot(p) do { } while (0) + +#endif /* _ASM_S390_KPROBES_H */ diff --git a/arch/s390/include/asm/kvm.h b/arch/s390/include/asm/kvm.h new file mode 100644 index 00000000..96076676 --- /dev/null +++ b/arch/s390/include/asm/kvm.h @@ -0,0 +1,55 @@ +#ifndef __LINUX_KVM_S390_H +#define __LINUX_KVM_S390_H +/* + * asm-s390/kvm.h - KVM s390 specific structures and definitions + * + * Copyright IBM Corp. 2008 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + * + * Author(s): Carsten Otte <cotte@de.ibm.com> + * Christian Borntraeger <borntraeger@de.ibm.com> + */ +#include <linux/types.h> + +#define __KVM_S390 + +/* for KVM_GET_REGS and KVM_SET_REGS */ +struct kvm_regs { + /* general purpose regs for s390 */ + __u64 gprs[16]; +}; + +/* for KVM_GET_SREGS and KVM_SET_SREGS */ +struct kvm_sregs { + __u32 acrs[16]; + __u64 crs[16]; +}; + +/* for KVM_GET_FPU and KVM_SET_FPU */ +struct kvm_fpu { + __u32 fpc; + __u64 fprs[16]; +}; + +struct kvm_debug_exit_arch { +}; + +/* for KVM_SET_GUEST_DEBUG */ +struct kvm_guest_debug_arch { +}; + +#define KVM_SYNC_PREFIX (1UL << 0) +#define KVM_SYNC_GPRS (1UL << 1) +#define KVM_SYNC_ACRS (1UL << 2) +#define KVM_SYNC_CRS (1UL << 3) +/* definition of registers in kvm_run */ +struct kvm_sync_regs { + __u64 prefix; /* prefix register */ + __u64 gprs[16]; /* general purpose registers */ + __u32 acrs[16]; /* access registers */ + __u64 crs[16]; /* control registers */ +}; +#endif diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h new file mode 100644 index 00000000..73438728 --- /dev/null +++ b/arch/s390/include/asm/kvm_host.h @@ -0,0 +1,259 @@ +/* + * asm-s390/kvm_host.h - definition for kernel virtual machines on s390 + * + * Copyright IBM Corp. 2008,2009 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + * + * Author(s): Carsten Otte <cotte@de.ibm.com> + */ + + +#ifndef ASM_KVM_HOST_H +#define ASM_KVM_HOST_H +#include <linux/hrtimer.h> +#include <linux/interrupt.h> +#include <linux/kvm_host.h> +#include <asm/debug.h> +#include <asm/cpu.h> + +#define KVM_MAX_VCPUS 64 +#define KVM_MEMORY_SLOTS 32 +/* memory slots that does not exposed to userspace */ +#define KVM_PRIVATE_MEM_SLOTS 4 + +struct sca_entry { + atomic_t scn; + __u32 reserved; + __u64 sda; + __u64 reserved2[2]; +} __attribute__((packed)); + + +struct sca_block { + __u64 ipte_control; + __u64 reserved[5]; + __u64 mcn; + __u64 reserved2; + struct sca_entry cpu[64]; +} __attribute__((packed)); + +#define KVM_NR_PAGE_SIZES 2 +#define KVM_HPAGE_GFN_SHIFT(x) (((x) - 1) * 8) +#define KVM_HPAGE_SHIFT(x) (PAGE_SHIFT + KVM_HPAGE_GFN_SHIFT(x)) +#define KVM_HPAGE_SIZE(x) (1UL << KVM_HPAGE_SHIFT(x)) +#define KVM_HPAGE_MASK(x) (~(KVM_HPAGE_SIZE(x) - 1)) +#define KVM_PAGES_PER_HPAGE(x) (KVM_HPAGE_SIZE(x) / PAGE_SIZE) + +#define CPUSTAT_STOPPED 0x80000000 +#define CPUSTAT_WAIT 0x10000000 +#define CPUSTAT_ECALL_PEND 0x08000000 +#define CPUSTAT_STOP_INT 0x04000000 +#define CPUSTAT_IO_INT 0x02000000 +#define CPUSTAT_EXT_INT 0x01000000 +#define CPUSTAT_RUNNING 0x00800000 +#define CPUSTAT_RETAINED 0x00400000 +#define CPUSTAT_TIMING_SUB 0x00020000 +#define CPUSTAT_SIE_SUB 0x00010000 +#define CPUSTAT_RRF 0x00008000 +#define CPUSTAT_SLSV 0x00004000 +#define CPUSTAT_SLSR 0x00002000 +#define CPUSTAT_ZARCH 0x00000800 +#define CPUSTAT_MCDS 0x00000100 +#define CPUSTAT_SM 0x00000080 +#define CPUSTAT_G 0x00000008 +#define CPUSTAT_J 0x00000002 +#define CPUSTAT_P 0x00000001 + +struct kvm_s390_sie_block { + atomic_t cpuflags; /* 0x0000 */ + __u32 prefix; /* 0x0004 */ + __u8 reserved8[32]; /* 0x0008 */ + __u64 cputm; /* 0x0028 */ + __u64 ckc; /* 0x0030 */ + __u64 epoch; /* 0x0038 */ + __u8 reserved40[4]; /* 0x0040 */ +#define LCTL_CR0 0x8000 + __u16 lctl; /* 0x0044 */ + __s16 icpua; /* 0x0046 */ + __u32 ictl; /* 0x0048 */ + __u32 eca; /* 0x004c */ + __u8 icptcode; /* 0x0050 */ + __u8 reserved51; /* 0x0051 */ + __u16 ihcpu; /* 0x0052 */ + __u8 reserved54[2]; /* 0x0054 */ + __u16 ipa; /* 0x0056 */ + __u32 ipb; /* 0x0058 */ + __u32 scaoh; /* 0x005c */ + __u8 reserved60; /* 0x0060 */ + __u8 ecb; /* 0x0061 */ + __u8 reserved62[2]; /* 0x0062 */ + __u32 scaol; /* 0x0064 */ + __u8 reserved68[4]; /* 0x0068 */ + __u32 todpr; /* 0x006c */ + __u8 reserved70[32]; /* 0x0070 */ + psw_t gpsw; /* 0x0090 */ + __u64 gg14; /* 0x00a0 */ + __u64 gg15; /* 0x00a8 */ + __u8 reservedb0[30]; /* 0x00b0 */ + __u16 iprcc; /* 0x00ce */ + __u8 reservedd0[48]; /* 0x00d0 */ + __u64 gcr[16]; /* 0x0100 */ + __u64 gbea; /* 0x0180 */ + __u8 reserved188[24]; /* 0x0188 */ + __u32 fac; /* 0x01a0 */ + __u8 reserved1a4[92]; /* 0x01a4 */ +} __attribute__((packed)); + +struct kvm_vcpu_stat { + u32 exit_userspace; + u32 exit_null; + u32 exit_external_request; + u32 exit_external_interrupt; + u32 exit_stop_request; + u32 exit_validity; + u32 exit_instruction; + u32 instruction_lctl; + u32 instruction_lctlg; + u32 exit_program_interruption; + u32 exit_instr_and_program; + u32 deliver_external_call; + u32 deliver_emergency_signal; + u32 deliver_service_signal; + u32 deliver_virtio_interrupt; + u32 deliver_stop_signal; + u32 deliver_prefix_signal; + u32 deliver_restart_signal; + u32 deliver_program_int; + u32 exit_wait_state; + u32 instruction_stidp; + u32 instruction_spx; + u32 instruction_stpx; + u32 instruction_stap; + u32 instruction_storage_key; + u32 instruction_stsch; + u32 instruction_chsc; + u32 instruction_stsi; + u32 instruction_stfl; + u32 instruction_tprot; + u32 instruction_sigp_sense; + u32 instruction_sigp_sense_running; + u32 instruction_sigp_external_call; + u32 instruction_sigp_emergency; + u32 instruction_sigp_stop; + u32 instruction_sigp_arch; + u32 instruction_sigp_prefix; + u32 instruction_sigp_restart; + u32 diagnose_10; + u32 diagnose_44; +}; + +struct kvm_s390_io_info { + __u16 subchannel_id; /* 0x0b8 */ + __u16 subchannel_nr; /* 0x0ba */ + __u32 io_int_parm; /* 0x0bc */ + __u32 io_int_word; /* 0x0c0 */ +}; + +struct kvm_s390_ext_info { + __u32 ext_params; + __u64 ext_params2; +}; + +#define PGM_OPERATION 0x01 +#define PGM_PRIVILEGED_OPERATION 0x02 +#define PGM_EXECUTE 0x03 +#define PGM_PROTECTION 0x04 +#define PGM_ADDRESSING 0x05 +#define PGM_SPECIFICATION 0x06 +#define PGM_DATA 0x07 + +struct kvm_s390_pgm_info { + __u16 code; +}; + +struct kvm_s390_prefix_info { + __u32 address; +}; + +struct kvm_s390_extcall_info { + __u16 code; +}; + +struct kvm_s390_emerg_info { + __u16 code; +}; + +struct kvm_s390_interrupt_info { + struct list_head list; + u64 type; + union { + struct kvm_s390_io_info io; + struct kvm_s390_ext_info ext; + struct kvm_s390_pgm_info pgm; + struct kvm_s390_emerg_info emerg; + struct kvm_s390_extcall_info extcall; + struct kvm_s390_prefix_info prefix; + }; +}; + +/* for local_interrupt.action_flags */ +#define ACTION_STORE_ON_STOP (1<<0) +#define ACTION_STOP_ON_STOP (1<<1) +#define ACTION_RELOADVCPU_ON_STOP (1<<2) + +struct kvm_s390_local_interrupt { + spinlock_t lock; + struct list_head list; + atomic_t active; + struct kvm_s390_float_interrupt *float_int; + int timer_due; /* event indicator for waitqueue below */ + wait_queue_head_t wq; + atomic_t *cpuflags; + unsigned int action_bits; +}; + +struct kvm_s390_float_interrupt { + spinlock_t lock; + struct list_head list; + atomic_t active; + int next_rr_cpu; + unsigned long idle_mask[(KVM_MAX_VCPUS + sizeof(long) - 1) + / sizeof(long)]; + struct kvm_s390_local_interrupt *local_int[KVM_MAX_VCPUS]; +}; + + +struct kvm_vcpu_arch { + struct kvm_s390_sie_block *sie_block; + s390_fp_regs host_fpregs; + unsigned int host_acrs[NUM_ACRS]; + s390_fp_regs guest_fpregs; + struct kvm_s390_local_interrupt local_int; + struct hrtimer ckc_timer; + struct tasklet_struct tasklet; + union { + struct cpuid cpu_id; + u64 stidp_data; + }; + struct gmap *gmap; +}; + +struct kvm_vm_stat { + u32 remote_tlb_flush; +}; + +struct kvm_arch_memory_slot { +}; + +struct kvm_arch{ + struct sca_block *sca; + debug_info_t *dbf; + struct kvm_s390_float_interrupt float_int; + struct gmap *gmap; +}; + +extern int sie64a(struct kvm_s390_sie_block *, u64 *); +#endif diff --git a/arch/s390/include/asm/kvm_para.h b/arch/s390/include/asm/kvm_para.h new file mode 100644 index 00000000..6964db22 --- /dev/null +++ b/arch/s390/include/asm/kvm_para.h @@ -0,0 +1,154 @@ +/* + * asm-s390/kvm_para.h - definition for paravirtual devices on s390 + * + * Copyright IBM Corp. 2008 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + * + * Author(s): Christian Borntraeger <borntraeger@de.ibm.com> + */ + +#ifndef __S390_KVM_PARA_H +#define __S390_KVM_PARA_H + +#ifdef __KERNEL__ + +/* + * Hypercalls for KVM on s390. The calling convention is similar to the + * s390 ABI, so we use R2-R6 for parameters 1-5. In addition we use R1 + * as hypercall number and R7 as parameter 6. The return value is + * written to R2. We use the diagnose instruction as hypercall. To avoid + * conflicts with existing diagnoses for LPAR and z/VM, we do not use + * the instruction encoded number, but specify the number in R1 and + * use 0x500 as KVM hypercall + * + * Copyright IBM Corp. 2007,2008 + * Author(s): Christian Borntraeger <borntraeger@de.ibm.com> + * + * This work is licensed under the terms of the GNU GPL, version 2. + */ + +static inline long kvm_hypercall0(unsigned long nr) +{ + register unsigned long __nr asm("1") = nr; + register long __rc asm("2"); + + asm volatile ("diag 2,4,0x500\n" + : "=d" (__rc) : "d" (__nr): "memory", "cc"); + return __rc; +} + +static inline long kvm_hypercall1(unsigned long nr, unsigned long p1) +{ + register unsigned long __nr asm("1") = nr; + register unsigned long __p1 asm("2") = p1; + register long __rc asm("2"); + + asm volatile ("diag 2,4,0x500\n" + : "=d" (__rc) : "d" (__nr), "0" (__p1) : "memory", "cc"); + return __rc; +} + +static inline long kvm_hypercall2(unsigned long nr, unsigned long p1, + unsigned long p2) +{ + register unsigned long __nr asm("1") = nr; + register unsigned long __p1 asm("2") = p1; + register unsigned long __p2 asm("3") = p2; + register long __rc asm("2"); + + asm volatile ("diag 2,4,0x500\n" + : "=d" (__rc) : "d" (__nr), "0" (__p1), "d" (__p2) + : "memory", "cc"); + return __rc; +} + +static inline long kvm_hypercall3(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3) +{ + register unsigned long __nr asm("1") = nr; + register unsigned long __p1 asm("2") = p1; + register unsigned long __p2 asm("3") = p2; + register unsigned long __p3 asm("4") = p3; + register long __rc asm("2"); + + asm volatile ("diag 2,4,0x500\n" + : "=d" (__rc) : "d" (__nr), "0" (__p1), "d" (__p2), + "d" (__p3) : "memory", "cc"); + return __rc; +} + + +static inline long kvm_hypercall4(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3, + unsigned long p4) +{ + register unsigned long __nr asm("1") = nr; + register unsigned long __p1 asm("2") = p1; + register unsigned long __p2 asm("3") = p2; + register unsigned long __p3 asm("4") = p3; + register unsigned long __p4 asm("5") = p4; + register long __rc asm("2"); + + asm volatile ("diag 2,4,0x500\n" + : "=d" (__rc) : "d" (__nr), "0" (__p1), "d" (__p2), + "d" (__p3), "d" (__p4) : "memory", "cc"); + return __rc; +} + +static inline long kvm_hypercall5(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3, + unsigned long p4, unsigned long p5) +{ + register unsigned long __nr asm("1") = nr; + register unsigned long __p1 asm("2") = p1; + register unsigned long __p2 asm("3") = p2; + register unsigned long __p3 asm("4") = p3; + register unsigned long __p4 asm("5") = p4; + register unsigned long __p5 asm("6") = p5; + register long __rc asm("2"); + + asm volatile ("diag 2,4,0x500\n" + : "=d" (__rc) : "d" (__nr), "0" (__p1), "d" (__p2), + "d" (__p3), "d" (__p4), "d" (__p5) : "memory", "cc"); + return __rc; +} + +static inline long kvm_hypercall6(unsigned long nr, unsigned long p1, + unsigned long p2, unsigned long p3, + unsigned long p4, unsigned long p5, + unsigned long p6) +{ + register unsigned long __nr asm("1") = nr; + register unsigned long __p1 asm("2") = p1; + register unsigned long __p2 asm("3") = p2; + register unsigned long __p3 asm("4") = p3; + register unsigned long __p4 asm("5") = p4; + register unsigned long __p5 asm("6") = p5; + register unsigned long __p6 asm("7") = p6; + register long __rc asm("2"); + + asm volatile ("diag 2,4,0x500\n" + : "=d" (__rc) : "d" (__nr), "0" (__p1), "d" (__p2), + "d" (__p3), "d" (__p4), "d" (__p5), "d" (__p6) + : "memory", "cc"); + return __rc; +} + +/* kvm on s390 is always paravirtualization enabled */ +static inline int kvm_para_available(void) +{ + return 1; +} + +/* No feature bits are currently assigned for kvm on s390 */ +static inline unsigned int kvm_arch_para_features(void) +{ + return 0; +} + +#endif + +#endif /* __S390_KVM_PARA_H */ diff --git a/arch/s390/include/asm/kvm_virtio.h b/arch/s390/include/asm/kvm_virtio.h new file mode 100644 index 00000000..72f61418 --- /dev/null +++ b/arch/s390/include/asm/kvm_virtio.h @@ -0,0 +1,64 @@ +/* + * kvm_virtio.h - definition for virtio for kvm on s390 + * + * Copyright IBM Corp. 2008 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + * + * Author(s): Christian Borntraeger <borntraeger@de.ibm.com> + */ + +#ifndef __KVM_S390_VIRTIO_H +#define __KVM_S390_VIRTIO_H + +#include <linux/types.h> + +struct kvm_device_desc { + /* The device type: console, network, disk etc. Type 0 terminates. */ + __u8 type; + /* The number of virtqueues (first in config array) */ + __u8 num_vq; + /* + * The number of bytes of feature bits. Multiply by 2: one for host + * features and one for guest acknowledgements. + */ + __u8 feature_len; + /* The number of bytes of the config array after virtqueues. */ + __u8 config_len; + /* A status byte, written by the Guest. */ + __u8 status; + __u8 config[0]; +}; + +/* + * This is how we expect the device configuration field for a virtqueue + * to be laid out in config space. + */ +struct kvm_vqconfig { + /* The token returned with an interrupt. Set by the guest */ + __u64 token; + /* The address of the virtio ring */ + __u64 address; + /* The number of entries in the virtio_ring */ + __u16 num; + +}; + +#define KVM_S390_VIRTIO_NOTIFY 0 +#define KVM_S390_VIRTIO_RESET 1 +#define KVM_S390_VIRTIO_SET_STATUS 2 + +/* The alignment to use between consumer and producer parts of vring. + * This is pagesize for historical reasons. */ +#define KVM_S390_VIRTIO_RING_ALIGN 4096 + + +/* These values are supposed to be in ext_params on an interrupt */ +#define VIRTIO_PARAM_MASK 0xff +#define VIRTIO_PARAM_VRING_INTERRUPT 0x0 +#define VIRTIO_PARAM_CONFIG_CHANGED 0x1 +#define VIRTIO_PARAM_DEV_ADD 0x2 + +#endif diff --git a/arch/s390/include/asm/linkage.h b/arch/s390/include/asm/linkage.h new file mode 100644 index 00000000..fc8a8284 --- /dev/null +++ b/arch/s390/include/asm/linkage.h @@ -0,0 +1,9 @@ +#ifndef __ASM_LINKAGE_H +#define __ASM_LINKAGE_H + +#include <linux/stringify.h> + +#define __ALIGN .align 4, 0x07 +#define __ALIGN_STR __stringify(__ALIGN) + +#endif diff --git a/arch/s390/include/asm/local.h b/arch/s390/include/asm/local.h new file mode 100644 index 00000000..c11c530f --- /dev/null +++ b/arch/s390/include/asm/local.h @@ -0,0 +1 @@ +#include <asm-generic/local.h> diff --git a/arch/s390/include/asm/local64.h b/arch/s390/include/asm/local64.h new file mode 100644 index 00000000..36c93b5c --- /dev/null +++ b/arch/s390/include/asm/local64.h @@ -0,0 +1 @@ +#include <asm-generic/local64.h> diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h new file mode 100644 index 00000000..47853deb --- /dev/null +++ b/arch/s390/include/asm/lowcore.h @@ -0,0 +1,361 @@ +/* + * Copyright IBM Corp. 1999,2012 + * Author(s): Hartmut Penner <hp@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Denis Joseph Barrow, + */ + +#ifndef _ASM_S390_LOWCORE_H +#define _ASM_S390_LOWCORE_H + +#include <linux/types.h> +#include <asm/ptrace.h> +#include <asm/cpu.h> + +#ifdef CONFIG_32BIT + +#define LC_ORDER 0 +#define LC_PAGES 1 + +struct save_area { + u32 ext_save; + u64 timer; + u64 clk_cmp; + u8 pad1[24]; + u8 psw[8]; + u32 pref_reg; + u8 pad2[20]; + u32 acc_regs[16]; + u64 fp_regs[4]; + u32 gp_regs[16]; + u32 ctrl_regs[16]; +} __packed; + +struct _lowcore { + psw_t restart_psw; /* 0x0000 */ + psw_t restart_old_psw; /* 0x0008 */ + __u8 pad_0x0010[0x0014-0x0010]; /* 0x0010 */ + __u32 ipl_parmblock_ptr; /* 0x0014 */ + psw_t external_old_psw; /* 0x0018 */ + psw_t svc_old_psw; /* 0x0020 */ + psw_t program_old_psw; /* 0x0028 */ + psw_t mcck_old_psw; /* 0x0030 */ + psw_t io_old_psw; /* 0x0038 */ + __u8 pad_0x0040[0x0058-0x0040]; /* 0x0040 */ + psw_t external_new_psw; /* 0x0058 */ + psw_t svc_new_psw; /* 0x0060 */ + psw_t program_new_psw; /* 0x0068 */ + psw_t mcck_new_psw; /* 0x0070 */ + psw_t io_new_psw; /* 0x0078 */ + __u32 ext_params; /* 0x0080 */ + __u16 ext_cpu_addr; /* 0x0084 */ + __u16 ext_int_code; /* 0x0086 */ + __u16 svc_ilc; /* 0x0088 */ + __u16 svc_code; /* 0x008a */ + __u16 pgm_ilc; /* 0x008c */ + __u16 pgm_code; /* 0x008e */ + __u32 trans_exc_code; /* 0x0090 */ + __u16 mon_class_num; /* 0x0094 */ + __u16 per_perc_atmid; /* 0x0096 */ + __u32 per_address; /* 0x0098 */ + __u32 monitor_code; /* 0x009c */ + __u8 exc_access_id; /* 0x00a0 */ + __u8 per_access_id; /* 0x00a1 */ + __u8 op_access_id; /* 0x00a2 */ + __u8 ar_access_id; /* 0x00a3 */ + __u8 pad_0x00a4[0x00b8-0x00a4]; /* 0x00a4 */ + __u16 subchannel_id; /* 0x00b8 */ + __u16 subchannel_nr; /* 0x00ba */ + __u32 io_int_parm; /* 0x00bc */ + __u32 io_int_word; /* 0x00c0 */ + __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */ + __u32 stfl_fac_list; /* 0x00c8 */ + __u8 pad_0x00cc[0x00d4-0x00cc]; /* 0x00cc */ + __u32 extended_save_area_addr; /* 0x00d4 */ + __u32 cpu_timer_save_area[2]; /* 0x00d8 */ + __u32 clock_comp_save_area[2]; /* 0x00e0 */ + __u32 mcck_interruption_code[2]; /* 0x00e8 */ + __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */ + __u32 external_damage_code; /* 0x00f4 */ + __u32 failing_storage_address; /* 0x00f8 */ + __u8 pad_0x00fc[0x0100-0x00fc]; /* 0x00fc */ + psw_t psw_save_area; /* 0x0100 */ + __u32 prefixreg_save_area; /* 0x0108 */ + __u8 pad_0x010c[0x0120-0x010c]; /* 0x010c */ + + /* CPU register save area: defined by architecture */ + __u32 access_regs_save_area[16]; /* 0x0120 */ + __u32 floating_pt_save_area[8]; /* 0x0160 */ + __u32 gpregs_save_area[16]; /* 0x0180 */ + __u32 cregs_save_area[16]; /* 0x01c0 */ + + /* Save areas. */ + __u32 save_area_sync[8]; /* 0x0200 */ + __u32 save_area_async[8]; /* 0x0220 */ + __u32 save_area_restart[1]; /* 0x0240 */ + __u8 pad_0x0244[0x0248-0x0244]; /* 0x0244 */ + + /* Return psws. */ + psw_t return_psw; /* 0x0248 */ + psw_t return_mcck_psw; /* 0x0250 */ + + /* CPU time accounting values */ + __u64 sync_enter_timer; /* 0x0258 */ + __u64 async_enter_timer; /* 0x0260 */ + __u64 mcck_enter_timer; /* 0x0268 */ + __u64 exit_timer; /* 0x0270 */ + __u64 user_timer; /* 0x0278 */ + __u64 system_timer; /* 0x0280 */ + __u64 steal_timer; /* 0x0288 */ + __u64 last_update_timer; /* 0x0290 */ + __u64 last_update_clock; /* 0x0298 */ + __u64 int_clock; /* 0x02a0 */ + __u64 mcck_clock; /* 0x02a8 */ + __u64 clock_comparator; /* 0x02b0 */ + + /* Current process. */ + __u32 current_task; /* 0x02b8 */ + __u32 thread_info; /* 0x02bc */ + __u32 kernel_stack; /* 0x02c0 */ + + /* Interrupt, panic and restart stack. */ + __u32 async_stack; /* 0x02c4 */ + __u32 panic_stack; /* 0x02c8 */ + __u32 restart_stack; /* 0x02cc */ + + /* Restart function and parameter. */ + __u32 restart_fn; /* 0x02d0 */ + __u32 restart_data; /* 0x02d4 */ + __u32 restart_source; /* 0x02d8 */ + + /* Address space pointer. */ + __u32 kernel_asce; /* 0x02dc */ + __u32 user_asce; /* 0x02e0 */ + __u32 current_pid; /* 0x02e4 */ + + /* SMP info area */ + __u32 cpu_nr; /* 0x02e8 */ + __u32 softirq_pending; /* 0x02ec */ + __u32 percpu_offset; /* 0x02f0 */ + __u32 machine_flags; /* 0x02f4 */ + __u32 ftrace_func; /* 0x02f8 */ + __u8 pad_0x02fc[0x0300-0x02fc]; /* 0x02fc */ + + /* Interrupt response block */ + __u8 irb[64]; /* 0x0300 */ + + __u8 pad_0x0340[0x0e00-0x0340]; /* 0x0340 */ + + /* + * 0xe00 contains the address of the IPL Parameter Information + * block. Dump tools need IPIB for IPL after dump. + * Note: do not change the position of any fields in 0x0e00-0x0f00 + */ + __u32 ipib; /* 0x0e00 */ + __u32 ipib_checksum; /* 0x0e04 */ + __u32 vmcore_info; /* 0x0e08 */ + __u8 pad_0x0e0c[0x0e18-0x0e0c]; /* 0x0e0c */ + __u32 os_info; /* 0x0e18 */ + __u8 pad_0x0e1c[0x0f00-0x0e1c]; /* 0x0e1c */ + + /* Extended facility list */ + __u64 stfle_fac_list[32]; /* 0x0f00 */ +} __packed; + +#else /* CONFIG_32BIT */ + +#define LC_ORDER 1 +#define LC_PAGES 2 + +struct save_area { + u64 fp_regs[16]; + u64 gp_regs[16]; + u8 psw[16]; + u8 pad1[8]; + u32 pref_reg; + u32 fp_ctrl_reg; + u8 pad2[4]; + u32 tod_reg; + u64 timer; + u64 clk_cmp; + u8 pad3[8]; + u32 acc_regs[16]; + u64 ctrl_regs[16]; +} __packed; + +struct _lowcore { + __u8 pad_0x0000[0x0014-0x0000]; /* 0x0000 */ + __u32 ipl_parmblock_ptr; /* 0x0014 */ + __u8 pad_0x0018[0x0080-0x0018]; /* 0x0018 */ + __u32 ext_params; /* 0x0080 */ + __u16 ext_cpu_addr; /* 0x0084 */ + __u16 ext_int_code; /* 0x0086 */ + __u16 svc_ilc; /* 0x0088 */ + __u16 svc_code; /* 0x008a */ + __u16 pgm_ilc; /* 0x008c */ + __u16 pgm_code; /* 0x008e */ + __u32 data_exc_code; /* 0x0090 */ + __u16 mon_class_num; /* 0x0094 */ + __u16 per_perc_atmid; /* 0x0096 */ + __u64 per_address; /* 0x0098 */ + __u8 exc_access_id; /* 0x00a0 */ + __u8 per_access_id; /* 0x00a1 */ + __u8 op_access_id; /* 0x00a2 */ + __u8 ar_access_id; /* 0x00a3 */ + __u8 pad_0x00a4[0x00a8-0x00a4]; /* 0x00a4 */ + __u64 trans_exc_code; /* 0x00a8 */ + __u64 monitor_code; /* 0x00b0 */ + __u16 subchannel_id; /* 0x00b8 */ + __u16 subchannel_nr; /* 0x00ba */ + __u32 io_int_parm; /* 0x00bc */ + __u32 io_int_word; /* 0x00c0 */ + __u8 pad_0x00c4[0x00c8-0x00c4]; /* 0x00c4 */ + __u32 stfl_fac_list; /* 0x00c8 */ + __u8 pad_0x00cc[0x00e8-0x00cc]; /* 0x00cc */ + __u32 mcck_interruption_code[2]; /* 0x00e8 */ + __u8 pad_0x00f0[0x00f4-0x00f0]; /* 0x00f0 */ + __u32 external_damage_code; /* 0x00f4 */ + __u64 failing_storage_address; /* 0x00f8 */ + __u8 pad_0x0100[0x0110-0x0100]; /* 0x0100 */ + __u64 breaking_event_addr; /* 0x0110 */ + __u8 pad_0x0118[0x0120-0x0118]; /* 0x0118 */ + psw_t restart_old_psw; /* 0x0120 */ + psw_t external_old_psw; /* 0x0130 */ + psw_t svc_old_psw; /* 0x0140 */ + psw_t program_old_psw; /* 0x0150 */ + psw_t mcck_old_psw; /* 0x0160 */ + psw_t io_old_psw; /* 0x0170 */ + __u8 pad_0x0180[0x01a0-0x0180]; /* 0x0180 */ + psw_t restart_psw; /* 0x01a0 */ + psw_t external_new_psw; /* 0x01b0 */ + psw_t svc_new_psw; /* 0x01c0 */ + psw_t program_new_psw; /* 0x01d0 */ + psw_t mcck_new_psw; /* 0x01e0 */ + psw_t io_new_psw; /* 0x01f0 */ + + /* Save areas. */ + __u64 save_area_sync[8]; /* 0x0200 */ + __u64 save_area_async[8]; /* 0x0240 */ + __u64 save_area_restart[1]; /* 0x0280 */ + __u8 pad_0x0288[0x0290-0x0288]; /* 0x0288 */ + + /* Return psws. */ + psw_t return_psw; /* 0x0290 */ + psw_t return_mcck_psw; /* 0x02a0 */ + + /* CPU accounting and timing values. */ + __u64 sync_enter_timer; /* 0x02b0 */ + __u64 async_enter_timer; /* 0x02b8 */ + __u64 mcck_enter_timer; /* 0x02c0 */ + __u64 exit_timer; /* 0x02c8 */ + __u64 user_timer; /* 0x02d0 */ + __u64 system_timer; /* 0x02d8 */ + __u64 steal_timer; /* 0x02e0 */ + __u64 last_update_timer; /* 0x02e8 */ + __u64 last_update_clock; /* 0x02f0 */ + __u64 int_clock; /* 0x02f8 */ + __u64 mcck_clock; /* 0x0300 */ + __u64 clock_comparator; /* 0x0308 */ + + /* Current process. */ + __u64 current_task; /* 0x0310 */ + __u64 thread_info; /* 0x0318 */ + __u64 kernel_stack; /* 0x0320 */ + + /* Interrupt, panic and restart stack. */ + __u64 async_stack; /* 0x0328 */ + __u64 panic_stack; /* 0x0330 */ + __u64 restart_stack; /* 0x0338 */ + + /* Restart function and parameter. */ + __u64 restart_fn; /* 0x0340 */ + __u64 restart_data; /* 0x0348 */ + __u64 restart_source; /* 0x0350 */ + + /* Address space pointer. */ + __u64 kernel_asce; /* 0x0358 */ + __u64 user_asce; /* 0x0360 */ + __u64 current_pid; /* 0x0368 */ + + /* SMP info area */ + __u32 cpu_nr; /* 0x0370 */ + __u32 softirq_pending; /* 0x0374 */ + __u64 percpu_offset; /* 0x0378 */ + __u64 vdso_per_cpu_data; /* 0x0380 */ + __u64 machine_flags; /* 0x0388 */ + __u64 ftrace_func; /* 0x0390 */ + __u64 gmap; /* 0x0398 */ + __u8 pad_0x03a0[0x0400-0x03a0]; /* 0x03a0 */ + + /* Interrupt response block. */ + __u8 irb[64]; /* 0x0400 */ + + /* Per cpu primary space access list */ + __u32 paste[16]; /* 0x0440 */ + + __u8 pad_0x0480[0x0e00-0x0480]; /* 0x0480 */ + + /* + * 0xe00 contains the address of the IPL Parameter Information + * block. Dump tools need IPIB for IPL after dump. + * Note: do not change the position of any fields in 0x0e00-0x0f00 + */ + __u64 ipib; /* 0x0e00 */ + __u32 ipib_checksum; /* 0x0e08 */ + /* + * Because the vmcore_info pointer is not 8 byte aligned it never + * should not be accessed directly. For accessing the pointer, first + * copy it to a local pointer variable. + */ + __u8 vmcore_info[8]; /* 0x0e0c */ + __u8 pad_0x0e14[0x0e18-0x0e14]; /* 0x0e14 */ + __u64 os_info; /* 0x0e18 */ + __u8 pad_0x0e20[0x0f00-0x0e20]; /* 0x0e20 */ + + /* Extended facility list */ + __u64 stfle_fac_list[32]; /* 0x0f00 */ + __u8 pad_0x1000[0x11b8-0x1000]; /* 0x1000 */ + + /* 64 bit extparam used for pfault/diag 250: defined by architecture */ + __u64 ext_params2; /* 0x11B8 */ + __u8 pad_0x11c0[0x1200-0x11C0]; /* 0x11C0 */ + + /* CPU register save area: defined by architecture */ + __u64 floating_pt_save_area[16]; /* 0x1200 */ + __u64 gpregs_save_area[16]; /* 0x1280 */ + psw_t psw_save_area; /* 0x1300 */ + __u8 pad_0x1310[0x1318-0x1310]; /* 0x1310 */ + __u32 prefixreg_save_area; /* 0x1318 */ + __u32 fpt_creg_save_area; /* 0x131c */ + __u8 pad_0x1320[0x1324-0x1320]; /* 0x1320 */ + __u32 tod_progreg_save_area; /* 0x1324 */ + __u32 cpu_timer_save_area[2]; /* 0x1328 */ + __u32 clock_comp_save_area[2]; /* 0x1330 */ + __u8 pad_0x1338[0x1340-0x1338]; /* 0x1338 */ + __u32 access_regs_save_area[16]; /* 0x1340 */ + __u64 cregs_save_area[16]; /* 0x1380 */ + + /* align to the top of the prefix area */ + __u8 pad_0x1400[0x2000-0x1400]; /* 0x1400 */ +} __packed; + +#endif /* CONFIG_32BIT */ + +#define S390_lowcore (*((struct _lowcore *) 0)) + +extern struct _lowcore *lowcore_ptr[]; + +static inline void set_prefix(__u32 address) +{ + asm volatile("spx %0" : : "m" (address) : "memory"); +} + +static inline __u32 store_prefix(void) +{ + __u32 address; + + asm volatile("stpx %0" : "=m" (address)); + return address; +} + +#endif /* _ASM_S390_LOWCORE_H */ diff --git a/arch/s390/include/asm/mathemu.h b/arch/s390/include/asm/mathemu.h new file mode 100644 index 00000000..e8dd1ba8 --- /dev/null +++ b/arch/s390/include/asm/mathemu.h @@ -0,0 +1,29 @@ +/* + * arch/s390/kernel/mathemu.h + * IEEE floating point emulation. + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + */ + +#ifndef __MATHEMU__ +#define __MATHEMU__ + +extern int math_emu_b3(__u8 *, struct pt_regs *); +extern int math_emu_ed(__u8 *, struct pt_regs *); +extern int math_emu_ldr(__u8 *); +extern int math_emu_ler(__u8 *); +extern int math_emu_std(__u8 *, struct pt_regs *); +extern int math_emu_ld(__u8 *, struct pt_regs *); +extern int math_emu_ste(__u8 *, struct pt_regs *); +extern int math_emu_le(__u8 *, struct pt_regs *); +extern int math_emu_lfpc(__u8 *, struct pt_regs *); +extern int math_emu_stfpc(__u8 *, struct pt_regs *); +extern int math_emu_srnm(__u8 *, struct pt_regs *); + +#endif /* __MATHEMU__ */ + + + + diff --git a/arch/s390/include/asm/mman.h b/arch/s390/include/asm/mman.h new file mode 100644 index 00000000..d49760e6 --- /dev/null +++ b/arch/s390/include/asm/mman.h @@ -0,0 +1,21 @@ +/* + * include/asm-s390/mman.h + * + * S390 version + * + * Derived from "include/asm-i386/mman.h" + */ + +#ifndef __S390_MMAN_H__ +#define __S390_MMAN_H__ + +#include <asm-generic/mman.h> + +#if defined(__KERNEL__) +#if !defined(__ASSEMBLY__) && defined(CONFIG_64BIT) +int s390_mmap_check(unsigned long addr, unsigned long len); +#define arch_mmap_check(addr,len,flags) s390_mmap_check(addr,len) +#endif +#endif + +#endif /* __S390_MMAN_H__ */ diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h new file mode 100644 index 00000000..63401787 --- /dev/null +++ b/arch/s390/include/asm/mmu.h @@ -0,0 +1,40 @@ +#ifndef __MMU_H +#define __MMU_H + +#include <linux/errno.h> + +typedef struct { + atomic_t attach_count; + unsigned int flush_mm; + spinlock_t list_lock; + struct list_head pgtable_list; + struct list_head gmap_list; + unsigned long asce_bits; + unsigned long asce_limit; + unsigned long vdso_base; + /* Cloned contexts will be created with extended page tables. */ + unsigned int alloc_pgste:1; + /* The mmu context has extended page tables. */ + unsigned int has_pgste:1; +} mm_context_t; + +#define INIT_MM_CONTEXT(name) \ + .context.list_lock = __SPIN_LOCK_UNLOCKED(name.context.list_lock), \ + .context.pgtable_list = LIST_HEAD_INIT(name.context.pgtable_list), \ + .context.gmap_list = LIST_HEAD_INIT(name.context.gmap_list), + +static inline int tprot(unsigned long addr) +{ + int rc = -EFAULT; + + asm volatile( + " tprot 0(%1),0\n" + "0: ipm %0\n" + " srl %0,28\n" + "1:\n" + EX_TABLE(0b,1b) + : "+d" (rc) : "a" (addr) : "cc"); + return rc; +} + +#endif diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h new file mode 100644 index 00000000..5d09e405 --- /dev/null +++ b/arch/s390/include/asm/mmu_context.h @@ -0,0 +1,96 @@ +/* + * include/asm-s390/mmu_context.h + * + * S390 version + * + * Derived from "include/asm-i386/mmu_context.h" + */ + +#ifndef __S390_MMU_CONTEXT_H +#define __S390_MMU_CONTEXT_H + +#include <asm/pgalloc.h> +#include <asm/uaccess.h> +#include <asm/tlbflush.h> +#include <asm/ctl_reg.h> +#include <asm-generic/mm_hooks.h> + +static inline int init_new_context(struct task_struct *tsk, + struct mm_struct *mm) +{ + atomic_set(&mm->context.attach_count, 0); + mm->context.flush_mm = 0; + mm->context.asce_bits = _ASCE_TABLE_LENGTH | _ASCE_USER_BITS; +#ifdef CONFIG_64BIT + mm->context.asce_bits |= _ASCE_TYPE_REGION3; +#endif + if (current->mm && current->mm->context.alloc_pgste) { + /* + * alloc_pgste indicates, that any NEW context will be created + * with extended page tables. The old context is unchanged. The + * page table allocation and the page table operations will + * look at has_pgste to distinguish normal and extended page + * tables. The only way to create extended page tables is to + * set alloc_pgste and then create a new context (e.g. dup_mm). + * The page table allocation is called after init_new_context + * and if has_pgste is set, it will create extended page + * tables. + */ + mm->context.has_pgste = 1; + mm->context.alloc_pgste = 1; + } else { + mm->context.has_pgste = 0; + mm->context.alloc_pgste = 0; + } + mm->context.asce_limit = STACK_TOP_MAX; + crst_table_init((unsigned long *) mm->pgd, pgd_entry_type(mm)); + return 0; +} + +#define destroy_context(mm) do { } while (0) + +#ifndef __s390x__ +#define LCTL_OPCODE "lctl" +#else +#define LCTL_OPCODE "lctlg" +#endif + +static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk) +{ + pgd_t *pgd = mm->pgd; + + S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd); + if (user_mode != HOME_SPACE_MODE) { + /* Load primary space page table origin. */ + asm volatile(LCTL_OPCODE" 1,1,%0\n" + : : "m" (S390_lowcore.user_asce) ); + } else + /* Load home space page table origin. */ + asm volatile(LCTL_OPCODE" 13,13,%0" + : : "m" (S390_lowcore.user_asce) ); + set_fs(current->thread.mm_segment); +} + +static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, + struct task_struct *tsk) +{ + cpumask_set_cpu(smp_processor_id(), mm_cpumask(next)); + update_mm(next, tsk); + atomic_dec(&prev->context.attach_count); + WARN_ON(atomic_read(&prev->context.attach_count) < 0); + atomic_inc(&next->context.attach_count); + /* Check for TLBs not flushed yet */ + if (next->context.flush_mm) + __tlb_flush_mm(next); +} + +#define enter_lazy_tlb(mm,tsk) do { } while (0) +#define deactivate_mm(tsk,mm) do { } while (0) + +static inline void activate_mm(struct mm_struct *prev, + struct mm_struct *next) +{ + switch_mm(prev, next, current); +} + +#endif /* __S390_MMU_CONTEXT_H */ diff --git a/arch/s390/include/asm/module.h b/arch/s390/include/asm/module.h new file mode 100644 index 00000000..1cc1c5af --- /dev/null +++ b/arch/s390/include/asm/module.h @@ -0,0 +1,46 @@ +#ifndef _ASM_S390_MODULE_H +#define _ASM_S390_MODULE_H +/* + * This file contains the s390 architecture specific module code. + */ + +struct mod_arch_syminfo +{ + unsigned long got_offset; + unsigned long plt_offset; + int got_initialized; + int plt_initialized; +}; + +struct mod_arch_specific +{ + /* Starting offset of got in the module core memory. */ + unsigned long got_offset; + /* Starting offset of plt in the module core memory. */ + unsigned long plt_offset; + /* Size of the got. */ + unsigned long got_size; + /* Size of the plt. */ + unsigned long plt_size; + /* Number of symbols in syminfo. */ + int nsyms; + /* Additional symbol information (got and plt offsets). */ + struct mod_arch_syminfo *syminfo; +}; + +#ifdef __s390x__ +#define ElfW(x) Elf64_ ## x +#define ELFW(x) ELF64_ ## x +#else +#define ElfW(x) Elf32_ ## x +#define ELFW(x) ELF32_ ## x +#endif + +#define Elf_Addr ElfW(Addr) +#define Elf_Rela ElfW(Rela) +#define Elf_Shdr ElfW(Shdr) +#define Elf_Sym ElfW(Sym) +#define Elf_Ehdr ElfW(Ehdr) +#define ELF_R_SYM ELFW(R_SYM) +#define ELF_R_TYPE ELFW(R_TYPE) +#endif /* _ASM_S390_MODULE_H */ diff --git a/arch/s390/include/asm/monwriter.h b/arch/s390/include/asm/monwriter.h new file mode 100644 index 00000000..f0cbf96c --- /dev/null +++ b/arch/s390/include/asm/monwriter.h @@ -0,0 +1,33 @@ +/* + * include/asm-s390/monwriter.h + * + * Copyright (C) IBM Corp. 2006 + * Character device driver for writing z/VM APPLDATA monitor records + * Version 1.0 + * Author(s): Melissa Howland <melissah@us.ibm.com> + * + */ + +#ifndef _ASM_390_MONWRITER_H +#define _ASM_390_MONWRITER_H + +/* mon_function values */ +#define MONWRITE_START_INTERVAL 0x00 /* start interval recording */ +#define MONWRITE_STOP_INTERVAL 0x01 /* stop interval or config recording */ +#define MONWRITE_GEN_EVENT 0x02 /* generate event record */ +#define MONWRITE_START_CONFIG 0x03 /* start configuration recording */ + +/* the header the app uses in its write() data */ +struct monwrite_hdr { + unsigned char mon_function; + unsigned short applid; + unsigned char record_num; + unsigned short version; + unsigned short release; + unsigned short mod_level; + unsigned short datalen; + unsigned char hdrlen; + +} __attribute__((packed)); + +#endif /* _ASM_390_MONWRITER_H */ diff --git a/arch/s390/include/asm/msgbuf.h b/arch/s390/include/asm/msgbuf.h new file mode 100644 index 00000000..1bbdee92 --- /dev/null +++ b/arch/s390/include/asm/msgbuf.h @@ -0,0 +1,37 @@ +#ifndef _S390_MSGBUF_H +#define _S390_MSGBUF_H + +/* + * The msqid64_ds structure for S/390 architecture. + * Note extra padding because this structure is passed back and forth + * between kernel and user space. + * + * Pad space is left for: + * - 64-bit time_t to solve y2038 problem + * - 2 miscellaneous 32-bit values + */ + +struct msqid64_ds { + struct ipc64_perm msg_perm; + __kernel_time_t msg_stime; /* last msgsnd time */ +#ifndef __s390x__ + unsigned long __unused1; +#endif /* ! __s390x__ */ + __kernel_time_t msg_rtime; /* last msgrcv time */ +#ifndef __s390x__ + unsigned long __unused2; +#endif /* ! __s390x__ */ + __kernel_time_t msg_ctime; /* last change time */ +#ifndef __s390x__ + unsigned long __unused3; +#endif /* ! __s390x__ */ + unsigned long msg_cbytes; /* current number of bytes on queue */ + unsigned long msg_qnum; /* number of messages in queue */ + unsigned long msg_qbytes; /* max number of bytes on queue */ + __kernel_pid_t msg_lspid; /* pid of last msgsnd */ + __kernel_pid_t msg_lrpid; /* last receive pid */ + unsigned long __unused4; + unsigned long __unused5; +}; + +#endif /* _S390_MSGBUF_H */ diff --git a/arch/s390/include/asm/mutex.h b/arch/s390/include/asm/mutex.h new file mode 100644 index 00000000..688271f5 --- /dev/null +++ b/arch/s390/include/asm/mutex.h @@ -0,0 +1,11 @@ +/* + * Pull in the generic implementation for the mutex fastpath. + * + * TODO: implement optimized primitives instead, or leave the generic + * implementation in place, or pick the atomic_xchg() based generic + * implementation. (see asm-generic/mutex-xchg.h for details) + */ + +#include <asm-generic/mutex-dec.h> + +#define arch_mutex_cpu_relax() barrier() diff --git a/arch/s390/include/asm/nmi.h b/arch/s390/include/asm/nmi.h new file mode 100644 index 00000000..f4b60441 --- /dev/null +++ b/arch/s390/include/asm/nmi.h @@ -0,0 +1,66 @@ +/* + * Machine check handler definitions + * + * Copyright IBM Corp. 2000,2009 + * Author(s): Ingo Adlung <adlung@de.ibm.com>, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Cornelia Huck <cornelia.huck@de.ibm.com>, + * Heiko Carstens <heiko.carstens@de.ibm.com>, + */ + +#ifndef _ASM_S390_NMI_H +#define _ASM_S390_NMI_H + +#include <linux/types.h> + +struct mci { + __u32 sd : 1; /* 00 system damage */ + __u32 pd : 1; /* 01 instruction-processing damage */ + __u32 sr : 1; /* 02 system recovery */ + __u32 : 1; /* 03 */ + __u32 cd : 1; /* 04 timing-facility damage */ + __u32 ed : 1; /* 05 external damage */ + __u32 : 1; /* 06 */ + __u32 dg : 1; /* 07 degradation */ + __u32 w : 1; /* 08 warning pending */ + __u32 cp : 1; /* 09 channel-report pending */ + __u32 sp : 1; /* 10 service-processor damage */ + __u32 ck : 1; /* 11 channel-subsystem damage */ + __u32 : 2; /* 12-13 */ + __u32 b : 1; /* 14 backed up */ + __u32 : 1; /* 15 */ + __u32 se : 1; /* 16 storage error uncorrected */ + __u32 sc : 1; /* 17 storage error corrected */ + __u32 ke : 1; /* 18 storage-key error uncorrected */ + __u32 ds : 1; /* 19 storage degradation */ + __u32 wp : 1; /* 20 psw mwp validity */ + __u32 ms : 1; /* 21 psw mask and key validity */ + __u32 pm : 1; /* 22 psw program mask and cc validity */ + __u32 ia : 1; /* 23 psw instruction address validity */ + __u32 fa : 1; /* 24 failing storage address validity */ + __u32 : 1; /* 25 */ + __u32 ec : 1; /* 26 external damage code validity */ + __u32 fp : 1; /* 27 floating point register validity */ + __u32 gr : 1; /* 28 general register validity */ + __u32 cr : 1; /* 29 control register validity */ + __u32 : 1; /* 30 */ + __u32 st : 1; /* 31 storage logical validity */ + __u32 ie : 1; /* 32 indirect storage error */ + __u32 ar : 1; /* 33 access register validity */ + __u32 da : 1; /* 34 delayed access exception */ + __u32 : 7; /* 35-41 */ + __u32 pr : 1; /* 42 tod programmable register validity */ + __u32 fc : 1; /* 43 fp control register validity */ + __u32 ap : 1; /* 44 ancillary report */ + __u32 : 1; /* 45 */ + __u32 ct : 1; /* 46 cpu timer validity */ + __u32 cc : 1; /* 47 clock comparator validity */ + __u32 : 16; /* 47-63 */ +}; + +struct pt_regs; + +extern void s390_handle_mcck(void); +extern void s390_do_machine_check(struct pt_regs *regs); + +#endif /* _ASM_S390_NMI_H */ diff --git a/arch/s390/include/asm/os_info.h b/arch/s390/include/asm/os_info.h new file mode 100644 index 00000000..d07518af --- /dev/null +++ b/arch/s390/include/asm/os_info.h @@ -0,0 +1,50 @@ +/* + * OS info memory interface + * + * Copyright IBM Corp. 2012 + * Author(s): Michael Holzheu <holzheu@linux.vnet.ibm.com> + */ +#ifndef _ASM_S390_OS_INFO_H +#define _ASM_S390_OS_INFO_H + +#define OS_INFO_VERSION_MAJOR 1 +#define OS_INFO_VERSION_MINOR 1 +#define OS_INFO_MAGIC 0x4f53494e464f535aULL /* OSINFOSZ */ + +#define OS_INFO_VMCOREINFO 0 +#define OS_INFO_REIPL_BLOCK 1 +#define OS_INFO_INIT_FN 2 + +struct os_info_entry { + u64 addr; + u64 size; + u32 csum; +} __packed; + +struct os_info { + u64 magic; + u32 csum; + u16 version_major; + u16 version_minor; + u64 crashkernel_addr; + u64 crashkernel_size; + struct os_info_entry entry[3]; + u8 reserved[4004]; +} __packed; + +void os_info_init(void); +void os_info_entry_add(int nr, void *ptr, u64 len); +void os_info_crashkernel_add(unsigned long base, unsigned long size); +u32 os_info_csum(struct os_info *os_info); + +#ifdef CONFIG_CRASH_DUMP +void *os_info_old_entry(int nr, unsigned long *size); +int copy_from_oldmem(void *dest, void *src, size_t count); +#else +static inline void *os_info_old_entry(int nr, unsigned long *size) +{ + return NULL; +} +#endif + +#endif /* _ASM_S390_OS_INFO_H */ diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h new file mode 100644 index 00000000..f7ec548c --- /dev/null +++ b/arch/s390/include/asm/page.h @@ -0,0 +1,208 @@ +/* + * include/asm-s390/page.h + * + * S390 version + * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Hartmut Penner (hp@de.ibm.com) + */ + +#ifndef _S390_PAGE_H +#define _S390_PAGE_H + +#include <linux/const.h> +#include <asm/types.h> + +/* PAGE_SHIFT determines the page size */ +#define PAGE_SHIFT 12 +#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) +#define PAGE_MASK (~(PAGE_SIZE-1)) +#define PAGE_DEFAULT_ACC 0 +#define PAGE_DEFAULT_KEY (PAGE_DEFAULT_ACC << 4) + +#define HPAGE_SHIFT 20 +#define HPAGE_SIZE (1UL << HPAGE_SHIFT) +#define HPAGE_MASK (~(HPAGE_SIZE - 1)) +#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT) + +#define ARCH_HAS_SETCLEAR_HUGE_PTE +#define ARCH_HAS_HUGE_PTE_TYPE +#define ARCH_HAS_PREPARE_HUGEPAGE +#define ARCH_HAS_HUGEPAGE_CLEAR_FLUSH + +#include <asm/setup.h> +#ifndef __ASSEMBLY__ + +static inline void clear_page(void *page) +{ + if (MACHINE_HAS_PFMF) { + asm volatile( + " .insn rre,0xb9af0000,%0,%1" + : : "d" (0x10000), "a" (page) : "memory", "cc"); + } else { + register unsigned long reg1 asm ("1") = 0; + register void *reg2 asm ("2") = page; + register unsigned long reg3 asm ("3") = 4096; + asm volatile( + " mvcl 2,0" + : "+d" (reg2), "+d" (reg3) : "d" (reg1) + : "memory", "cc"); + } +} + +static inline void copy_page(void *to, void *from) +{ + if (MACHINE_HAS_MVPG) { + register unsigned long reg0 asm ("0") = 0; + asm volatile( + " mvpg %0,%1" + : : "a" (to), "a" (from), "d" (reg0) + : "memory", "cc"); + } else + asm volatile( + " mvc 0(256,%0),0(%1)\n" + " mvc 256(256,%0),256(%1)\n" + " mvc 512(256,%0),512(%1)\n" + " mvc 768(256,%0),768(%1)\n" + " mvc 1024(256,%0),1024(%1)\n" + " mvc 1280(256,%0),1280(%1)\n" + " mvc 1536(256,%0),1536(%1)\n" + " mvc 1792(256,%0),1792(%1)\n" + " mvc 2048(256,%0),2048(%1)\n" + " mvc 2304(256,%0),2304(%1)\n" + " mvc 2560(256,%0),2560(%1)\n" + " mvc 2816(256,%0),2816(%1)\n" + " mvc 3072(256,%0),3072(%1)\n" + " mvc 3328(256,%0),3328(%1)\n" + " mvc 3584(256,%0),3584(%1)\n" + " mvc 3840(256,%0),3840(%1)\n" + : : "a" (to), "a" (from) : "memory"); +} + +#define clear_user_page(page, vaddr, pg) clear_page(page) +#define copy_user_page(to, from, vaddr, pg) copy_page(to, from) + +#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \ + alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr) +#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE + +/* + * These are used to make use of C type-checking.. + */ + +typedef struct { unsigned long pgprot; } pgprot_t; +typedef struct { unsigned long pgste; } pgste_t; +typedef struct { unsigned long pte; } pte_t; +typedef struct { unsigned long pmd; } pmd_t; +typedef struct { unsigned long pud; } pud_t; +typedef struct { unsigned long pgd; } pgd_t; +typedef pte_t *pgtable_t; + +#define pgprot_val(x) ((x).pgprot) +#define pgste_val(x) ((x).pgste) +#define pte_val(x) ((x).pte) +#define pmd_val(x) ((x).pmd) +#define pud_val(x) ((x).pud) +#define pgd_val(x) ((x).pgd) + +#define __pgste(x) ((pgste_t) { (x) } ) +#define __pte(x) ((pte_t) { (x) } ) +#define __pmd(x) ((pmd_t) { (x) } ) +#define __pud(x) ((pud_t) { (x) } ) +#define __pgd(x) ((pgd_t) { (x) } ) +#define __pgprot(x) ((pgprot_t) { (x) } ) + +static inline void page_set_storage_key(unsigned long addr, + unsigned char skey, int mapped) +{ + if (!mapped) + asm volatile(".insn rrf,0xb22b0000,%0,%1,8,0" + : : "d" (skey), "a" (addr)); + else + asm volatile("sske %0,%1" : : "d" (skey), "a" (addr)); +} + +static inline unsigned char page_get_storage_key(unsigned long addr) +{ + unsigned char skey; + + asm volatile("iske %0,%1" : "=d" (skey) : "a" (addr)); + return skey; +} + +static inline int page_reset_referenced(unsigned long addr) +{ + unsigned int ipm; + + asm volatile( + " rrbe 0,%1\n" + " ipm %0\n" + : "=d" (ipm) : "a" (addr) : "cc"); + return !!(ipm & 0x20000000); +} + +/* Bits int the storage key */ +#define _PAGE_CHANGED 0x02 /* HW changed bit */ +#define _PAGE_REFERENCED 0x04 /* HW referenced bit */ +#define _PAGE_FP_BIT 0x08 /* HW fetch protection bit */ +#define _PAGE_ACC_BITS 0xf0 /* HW access control bits */ + +/* + * Test and clear dirty bit in storage key. + * We can't clear the changed bit atomically. This is a potential + * race against modification of the referenced bit. This function + * should therefore only be called if it is not mapped in any + * address space. + */ +#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_DIRTY +static inline int page_test_and_clear_dirty(unsigned long pfn, int mapped) +{ + unsigned char skey; + + skey = page_get_storage_key(pfn << PAGE_SHIFT); + if (!(skey & _PAGE_CHANGED)) + return 0; + page_set_storage_key(pfn << PAGE_SHIFT, skey & ~_PAGE_CHANGED, mapped); + return 1; +} + +/* + * Test and clear referenced bit in storage key. + */ +#define __HAVE_ARCH_PAGE_TEST_AND_CLEAR_YOUNG +static inline int page_test_and_clear_young(unsigned long pfn) +{ + return page_reset_referenced(pfn << PAGE_SHIFT); +} + +struct page; +void arch_free_page(struct page *page, int order); +void arch_alloc_page(struct page *page, int order); +void arch_set_page_states(int make_stable); + +static inline int devmem_is_allowed(unsigned long pfn) +{ + return 0; +} + +#define HAVE_ARCH_FREE_PAGE +#define HAVE_ARCH_ALLOC_PAGE + +#endif /* !__ASSEMBLY__ */ + +#define __PAGE_OFFSET 0x0UL +#define PAGE_OFFSET 0x0UL +#define __pa(x) (unsigned long)(x) +#define __va(x) (void *)(unsigned long)(x) +#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) +#define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT) +#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) + +#define VM_DATA_DEFAULT_FLAGS (VM_READ | VM_WRITE | \ + VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) + +#include <asm-generic/memory_model.h> +#include <asm-generic/getorder.h> + +#define __HAVE_ARCH_GATE_AREA 1 + +#endif /* _S390_PAGE_H */ diff --git a/arch/s390/include/asm/param.h b/arch/s390/include/asm/param.h new file mode 100644 index 00000000..c616821b --- /dev/null +++ b/arch/s390/include/asm/param.h @@ -0,0 +1,6 @@ +#ifndef _ASMS390_PARAM_H +#define _ASMS390_PARAM_H + +#include <asm-generic/param.h> + +#endif /* _ASMS390_PARAM_H */ diff --git a/arch/s390/include/asm/pci.h b/arch/s390/include/asm/pci.h new file mode 100644 index 00000000..42a145c9 --- /dev/null +++ b/arch/s390/include/asm/pci.h @@ -0,0 +1,10 @@ +#ifndef __ASM_S390_PCI_H +#define __ASM_S390_PCI_H + +/* S/390 systems don't have a PCI bus. This file is just here because some stupid .c code + * includes it even if CONFIG_PCI is not set. + */ +#define PCI_DMA_BUS_IS_PHYS (0) + +#endif /* __ASM_S390_PCI_H */ + diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h new file mode 100644 index 00000000..0fbd1899 --- /dev/null +++ b/arch/s390/include/asm/percpu.h @@ -0,0 +1,89 @@ +#ifndef __ARCH_S390_PERCPU__ +#define __ARCH_S390_PERCPU__ + +#include <linux/preempt.h> +#include <asm/cmpxchg.h> + +/* + * s390 uses its own implementation for per cpu data, the offset of + * the cpu local data area is cached in the cpu's lowcore memory. + */ +#define __my_cpu_offset S390_lowcore.percpu_offset + +/* + * For 64 bit module code, the module may be more than 4G above the + * per cpu area, use weak definitions to force the compiler to + * generate external references. + */ +#if defined(CONFIG_SMP) && defined(__s390x__) && defined(MODULE) +#define ARCH_NEEDS_WEAK_PER_CPU +#endif + +#define arch_this_cpu_to_op(pcp, val, op) \ +do { \ + typedef typeof(pcp) pcp_op_T__; \ + pcp_op_T__ old__, new__, prev__; \ + pcp_op_T__ *ptr__; \ + preempt_disable(); \ + ptr__ = __this_cpu_ptr(&(pcp)); \ + prev__ = *ptr__; \ + do { \ + old__ = prev__; \ + new__ = old__ op (val); \ + switch (sizeof(*ptr__)) { \ + case 8: \ + prev__ = cmpxchg64(ptr__, old__, new__); \ + break; \ + default: \ + prev__ = cmpxchg(ptr__, old__, new__); \ + } \ + } while (prev__ != old__); \ + preempt_enable(); \ +} while (0) + +#define this_cpu_add_1(pcp, val) arch_this_cpu_to_op(pcp, val, +) +#define this_cpu_add_2(pcp, val) arch_this_cpu_to_op(pcp, val, +) +#define this_cpu_add_4(pcp, val) arch_this_cpu_to_op(pcp, val, +) +#define this_cpu_add_8(pcp, val) arch_this_cpu_to_op(pcp, val, +) + +#define this_cpu_and_1(pcp, val) arch_this_cpu_to_op(pcp, val, &) +#define this_cpu_and_2(pcp, val) arch_this_cpu_to_op(pcp, val, &) +#define this_cpu_and_4(pcp, val) arch_this_cpu_to_op(pcp, val, &) +#define this_cpu_and_8(pcp, val) arch_this_cpu_to_op(pcp, val, &) + +#define this_cpu_or_1(pcp, val) arch_this_cpu_to_op(pcp, val, |) +#define this_cpu_or_2(pcp, val) arch_this_cpu_to_op(pcp, val, |) +#define this_cpu_or_4(pcp, val) arch_this_cpu_to_op(pcp, val, |) +#define this_cpu_or_8(pcp, val) arch_this_cpu_to_op(pcp, val, |) + +#define this_cpu_xor_1(pcp, val) arch_this_cpu_to_op(pcp, val, ^) +#define this_cpu_xor_2(pcp, val) arch_this_cpu_to_op(pcp, val, ^) +#define this_cpu_xor_4(pcp, val) arch_this_cpu_to_op(pcp, val, ^) +#define this_cpu_xor_8(pcp, val) arch_this_cpu_to_op(pcp, val, ^) + +#define arch_this_cpu_cmpxchg(pcp, oval, nval) \ +({ \ + typedef typeof(pcp) pcp_op_T__; \ + pcp_op_T__ ret__; \ + pcp_op_T__ *ptr__; \ + preempt_disable(); \ + ptr__ = __this_cpu_ptr(&(pcp)); \ + switch (sizeof(*ptr__)) { \ + case 8: \ + ret__ = cmpxchg64(ptr__, oval, nval); \ + break; \ + default: \ + ret__ = cmpxchg(ptr__, oval, nval); \ + } \ + preempt_enable(); \ + ret__; \ +}) + +#define this_cpu_cmpxchg_1(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_2(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_4(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) +#define this_cpu_cmpxchg_8(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval) + +#include <asm-generic/percpu.h> + +#endif /* __ARCH_S390_PERCPU__ */ diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h new file mode 100644 index 00000000..7941968e --- /dev/null +++ b/arch/s390/include/asm/perf_event.h @@ -0,0 +1,16 @@ +/* + * Performance event support - s390 specific definitions. + * + * Copyright IBM Corp. 2009, 2012 + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + * Hendrik Brueckner <brueckner@linux.vnet.ibm.com> + */ + +#include <asm/cpu_mf.h> + +/* CPU-measurement counter facility */ +#define PERF_CPUM_CF_MAX_CTR 160 + +/* Per-CPU flags for PMU states */ +#define PMU_F_RESERVED 0x1000 +#define PMU_F_ENABLED 0x2000 diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h new file mode 100644 index 00000000..78e30419 --- /dev/null +++ b/arch/s390/include/asm/pgalloc.h @@ -0,0 +1,142 @@ +/* + * include/asm-s390/pgalloc.h + * + * S390 version + * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Hartmut Penner (hp@de.ibm.com) + * Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/pgalloc.h" + * Copyright (C) 1994 Linus Torvalds + */ + +#ifndef _S390_PGALLOC_H +#define _S390_PGALLOC_H + +#include <linux/threads.h> +#include <linux/gfp.h> +#include <linux/mm.h> + +unsigned long *crst_table_alloc(struct mm_struct *); +void crst_table_free(struct mm_struct *, unsigned long *); + +unsigned long *page_table_alloc(struct mm_struct *, unsigned long); +void page_table_free(struct mm_struct *, unsigned long *); +void page_table_free_rcu(struct mmu_gather *, unsigned long *); + +static inline void clear_table(unsigned long *s, unsigned long val, size_t n) +{ + typedef struct { char _[n]; } addrtype; + + *s = val; + n = (n / 256) - 1; + asm volatile( +#ifdef CONFIG_64BIT + " mvc 8(248,%0),0(%0)\n" +#else + " mvc 4(252,%0),0(%0)\n" +#endif + "0: mvc 256(256,%0),0(%0)\n" + " la %0,256(%0)\n" + " brct %1,0b\n" + : "+a" (s), "+d" (n), "=m" (*(addrtype *) s) + : "m" (*(addrtype *) s)); +} + +static inline void crst_table_init(unsigned long *crst, unsigned long entry) +{ + clear_table(crst, entry, sizeof(unsigned long)*2048); +} + +#ifndef __s390x__ + +static inline unsigned long pgd_entry_type(struct mm_struct *mm) +{ + return _SEGMENT_ENTRY_EMPTY; +} + +#define pud_alloc_one(mm,address) ({ BUG(); ((pud_t *)2); }) +#define pud_free(mm, x) do { } while (0) + +#define pmd_alloc_one(mm,address) ({ BUG(); ((pmd_t *)2); }) +#define pmd_free(mm, x) do { } while (0) + +#define pgd_populate(mm, pgd, pud) BUG() +#define pud_populate(mm, pud, pmd) BUG() + +#else /* __s390x__ */ + +static inline unsigned long pgd_entry_type(struct mm_struct *mm) +{ + if (mm->context.asce_limit <= (1UL << 31)) + return _SEGMENT_ENTRY_EMPTY; + if (mm->context.asce_limit <= (1UL << 42)) + return _REGION3_ENTRY_EMPTY; + return _REGION2_ENTRY_EMPTY; +} + +int crst_table_upgrade(struct mm_struct *, unsigned long limit); +void crst_table_downgrade(struct mm_struct *, unsigned long limit); + +static inline pud_t *pud_alloc_one(struct mm_struct *mm, unsigned long address) +{ + unsigned long *table = crst_table_alloc(mm); + if (table) + crst_table_init(table, _REGION3_ENTRY_EMPTY); + return (pud_t *) table; +} +#define pud_free(mm, pud) crst_table_free(mm, (unsigned long *) pud) + +static inline pmd_t *pmd_alloc_one(struct mm_struct *mm, unsigned long vmaddr) +{ + unsigned long *table = crst_table_alloc(mm); + if (table) + crst_table_init(table, _SEGMENT_ENTRY_EMPTY); + return (pmd_t *) table; +} +#define pmd_free(mm, pmd) crst_table_free(mm, (unsigned long *) pmd) + +static inline void pgd_populate(struct mm_struct *mm, pgd_t *pgd, pud_t *pud) +{ + pgd_val(*pgd) = _REGION2_ENTRY | __pa(pud); +} + +static inline void pud_populate(struct mm_struct *mm, pud_t *pud, pmd_t *pmd) +{ + pud_val(*pud) = _REGION3_ENTRY | __pa(pmd); +} + +#endif /* __s390x__ */ + +static inline pgd_t *pgd_alloc(struct mm_struct *mm) +{ + spin_lock_init(&mm->context.list_lock); + INIT_LIST_HEAD(&mm->context.pgtable_list); + INIT_LIST_HEAD(&mm->context.gmap_list); + return (pgd_t *) crst_table_alloc(mm); +} +#define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd) + +static inline void pmd_populate(struct mm_struct *mm, + pmd_t *pmd, pgtable_t pte) +{ + pmd_val(*pmd) = _SEGMENT_ENTRY + __pa(pte); +} + +#define pmd_populate_kernel(mm, pmd, pte) pmd_populate(mm, pmd, pte) + +#define pmd_pgtable(pmd) \ + (pgtable_t)(pmd_val(pmd) & -sizeof(pte_t)*PTRS_PER_PTE) + +/* + * page table entry allocation/free routines. + */ +#define pte_alloc_one_kernel(mm, vmaddr) ((pte_t *) page_table_alloc(mm, vmaddr)) +#define pte_alloc_one(mm, vmaddr) ((pte_t *) page_table_alloc(mm, vmaddr)) + +#define pte_free_kernel(mm, pte) page_table_free(mm, (unsigned long *) pte) +#define pte_free(mm, pte) page_table_free(mm, (unsigned long *) pte) + +extern void rcu_table_freelist_finish(void); + +#endif /* _S390_PGALLOC_H */ diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h new file mode 100644 index 00000000..011358c1 --- /dev/null +++ b/arch/s390/include/asm/pgtable.h @@ -0,0 +1,1248 @@ +/* + * include/asm-s390/pgtable.h + * + * S390 version + * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Hartmut Penner (hp@de.ibm.com) + * Ulrich Weigand (weigand@de.ibm.com) + * Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/pgtable.h" + */ + +#ifndef _ASM_S390_PGTABLE_H +#define _ASM_S390_PGTABLE_H + +/* + * The Linux memory management assumes a three-level page table setup. For + * s390 31 bit we "fold" the mid level into the top-level page table, so + * that we physically have the same two-level page table as the s390 mmu + * expects in 31 bit mode. For s390 64 bit we use three of the five levels + * the hardware provides (region first and region second tables are not + * used). + * + * The "pgd_xxx()" functions are trivial for a folded two-level + * setup: the pgd is never bad, and a pmd always exists (as it's folded + * into the pgd entry) + * + * This file contains the functions and defines necessary to modify and use + * the S390 page table tree. + */ +#ifndef __ASSEMBLY__ +#include <linux/sched.h> +#include <linux/mm_types.h> +#include <asm/bug.h> +#include <asm/page.h> + +extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096))); +extern void paging_init(void); +extern void vmem_map_init(void); +extern void fault_init(void); + +/* + * The S390 doesn't have any external MMU info: the kernel page + * tables contain all the necessary information. + */ +#define update_mmu_cache(vma, address, ptep) do { } while (0) + +/* + * ZERO_PAGE is a global shared page that is always zero; used + * for zero-mapped memory areas etc.. + */ + +extern unsigned long empty_zero_page; +extern unsigned long zero_page_mask; + +#define ZERO_PAGE(vaddr) \ + (virt_to_page((void *)(empty_zero_page + \ + (((unsigned long)(vaddr)) &zero_page_mask)))) + +#define is_zero_pfn is_zero_pfn +static inline int is_zero_pfn(unsigned long pfn) +{ + extern unsigned long zero_pfn; + unsigned long offset_from_zero_pfn = pfn - zero_pfn; + return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT); +} + +#define my_zero_pfn(addr) page_to_pfn(ZERO_PAGE(addr)) + +#endif /* !__ASSEMBLY__ */ + +/* + * PMD_SHIFT determines the size of the area a second-level page + * table can map + * PGDIR_SHIFT determines what a third-level page table entry can map + */ +#ifndef __s390x__ +# define PMD_SHIFT 20 +# define PUD_SHIFT 20 +# define PGDIR_SHIFT 20 +#else /* __s390x__ */ +# define PMD_SHIFT 20 +# define PUD_SHIFT 31 +# define PGDIR_SHIFT 42 +#endif /* __s390x__ */ + +#define PMD_SIZE (1UL << PMD_SHIFT) +#define PMD_MASK (~(PMD_SIZE-1)) +#define PUD_SIZE (1UL << PUD_SHIFT) +#define PUD_MASK (~(PUD_SIZE-1)) +#define PGDIR_SIZE (1UL << PGDIR_SHIFT) +#define PGDIR_MASK (~(PGDIR_SIZE-1)) + +/* + * entries per page directory level: the S390 is two-level, so + * we don't really have any PMD directory physically. + * for S390 segment-table entries are combined to one PGD + * that leads to 1024 pte per pgd + */ +#define PTRS_PER_PTE 256 +#ifndef __s390x__ +#define PTRS_PER_PMD 1 +#define PTRS_PER_PUD 1 +#else /* __s390x__ */ +#define PTRS_PER_PMD 2048 +#define PTRS_PER_PUD 2048 +#endif /* __s390x__ */ +#define PTRS_PER_PGD 2048 + +#define FIRST_USER_ADDRESS 0 + +#define pte_ERROR(e) \ + printk("%s:%d: bad pte %p.\n", __FILE__, __LINE__, (void *) pte_val(e)) +#define pmd_ERROR(e) \ + printk("%s:%d: bad pmd %p.\n", __FILE__, __LINE__, (void *) pmd_val(e)) +#define pud_ERROR(e) \ + printk("%s:%d: bad pud %p.\n", __FILE__, __LINE__, (void *) pud_val(e)) +#define pgd_ERROR(e) \ + printk("%s:%d: bad pgd %p.\n", __FILE__, __LINE__, (void *) pgd_val(e)) + +#ifndef __ASSEMBLY__ +/* + * The vmalloc area will always be on the topmost area of the kernel + * mapping. We reserve 96MB (31bit) / 128GB (64bit) for vmalloc, + * which should be enough for any sane case. + * By putting vmalloc at the top, we maximise the gap between physical + * memory and vmalloc to catch misplaced memory accesses. As a side + * effect, this also makes sure that 64 bit module code cannot be used + * as system call address. + */ +extern unsigned long VMALLOC_START; +extern unsigned long VMALLOC_END; +extern struct page *vmemmap; + +#define VMEM_MAX_PHYS ((unsigned long) vmemmap) + +/* + * A 31 bit pagetable entry of S390 has following format: + * | PFRA | | OS | + * 0 0IP0 + * 00000000001111111111222222222233 + * 01234567890123456789012345678901 + * + * I Page-Invalid Bit: Page is not available for address-translation + * P Page-Protection Bit: Store access not possible for page + * + * A 31 bit segmenttable entry of S390 has following format: + * | P-table origin | |PTL + * 0 IC + * 00000000001111111111222222222233 + * 01234567890123456789012345678901 + * + * I Segment-Invalid Bit: Segment is not available for address-translation + * C Common-Segment Bit: Segment is not private (PoP 3-30) + * PTL Page-Table-Length: Page-table length (PTL+1*16 entries -> up to 256) + * + * The 31 bit segmenttable origin of S390 has following format: + * + * |S-table origin | | STL | + * X **GPS + * 00000000001111111111222222222233 + * 01234567890123456789012345678901 + * + * X Space-Switch event: + * G Segment-Invalid Bit: * + * P Private-Space Bit: Segment is not private (PoP 3-30) + * S Storage-Alteration: + * STL Segment-Table-Length: Segment-table length (STL+1*16 entries -> up to 2048) + * + * A 64 bit pagetable entry of S390 has following format: + * | PFRA |0IPC| OS | + * 0000000000111111111122222222223333333333444444444455555555556666 + * 0123456789012345678901234567890123456789012345678901234567890123 + * + * I Page-Invalid Bit: Page is not available for address-translation + * P Page-Protection Bit: Store access not possible for page + * C Change-bit override: HW is not required to set change bit + * + * A 64 bit segmenttable entry of S390 has following format: + * | P-table origin | TT + * 0000000000111111111122222222223333333333444444444455555555556666 + * 0123456789012345678901234567890123456789012345678901234567890123 + * + * I Segment-Invalid Bit: Segment is not available for address-translation + * C Common-Segment Bit: Segment is not private (PoP 3-30) + * P Page-Protection Bit: Store access not possible for page + * TT Type 00 + * + * A 64 bit region table entry of S390 has following format: + * | S-table origin | TF TTTL + * 0000000000111111111122222222223333333333444444444455555555556666 + * 0123456789012345678901234567890123456789012345678901234567890123 + * + * I Segment-Invalid Bit: Segment is not available for address-translation + * TT Type 01 + * TF + * TL Table length + * + * The 64 bit regiontable origin of S390 has following format: + * | region table origon | DTTL + * 0000000000111111111122222222223333333333444444444455555555556666 + * 0123456789012345678901234567890123456789012345678901234567890123 + * + * X Space-Switch event: + * G Segment-Invalid Bit: + * P Private-Space Bit: + * S Storage-Alteration: + * R Real space + * TL Table-Length: + * + * A storage key has the following format: + * | ACC |F|R|C|0| + * 0 3 4 5 6 7 + * ACC: access key + * F : fetch protection bit + * R : referenced bit + * C : changed bit + */ + +/* Hardware bits in the page table entry */ +#define _PAGE_CO 0x100 /* HW Change-bit override */ +#define _PAGE_RO 0x200 /* HW read-only bit */ +#define _PAGE_INVALID 0x400 /* HW invalid bit */ + +/* Software bits in the page table entry */ +#define _PAGE_SWT 0x001 /* SW pte type bit t */ +#define _PAGE_SWX 0x002 /* SW pte type bit x */ +#define _PAGE_SWC 0x004 /* SW pte changed bit (for KVM) */ +#define _PAGE_SWR 0x008 /* SW pte referenced bit (for KVM) */ +#define _PAGE_SPECIAL 0x010 /* SW associated with special page */ +#define __HAVE_ARCH_PTE_SPECIAL + +/* Set of bits not changed in pte_modify */ +#define _PAGE_CHG_MASK (PAGE_MASK | _PAGE_SPECIAL | _PAGE_SWC | _PAGE_SWR) + +/* Six different types of pages. */ +#define _PAGE_TYPE_EMPTY 0x400 +#define _PAGE_TYPE_NONE 0x401 +#define _PAGE_TYPE_SWAP 0x403 +#define _PAGE_TYPE_FILE 0x601 /* bit 0x002 is used for offset !! */ +#define _PAGE_TYPE_RO 0x200 +#define _PAGE_TYPE_RW 0x000 + +/* + * Only four types for huge pages, using the invalid bit and protection bit + * of a segment table entry. + */ +#define _HPAGE_TYPE_EMPTY 0x020 /* _SEGMENT_ENTRY_INV */ +#define _HPAGE_TYPE_NONE 0x220 +#define _HPAGE_TYPE_RO 0x200 /* _SEGMENT_ENTRY_RO */ +#define _HPAGE_TYPE_RW 0x000 + +/* + * PTE type bits are rather complicated. handle_pte_fault uses pte_present, + * pte_none and pte_file to find out the pte type WITHOUT holding the page + * table lock. ptep_clear_flush on the other hand uses ptep_clear_flush to + * invalidate a given pte. ipte sets the hw invalid bit and clears all tlbs + * for the page. The page table entry is set to _PAGE_TYPE_EMPTY afterwards. + * This change is done while holding the lock, but the intermediate step + * of a previously valid pte with the hw invalid bit set can be observed by + * handle_pte_fault. That makes it necessary that all valid pte types with + * the hw invalid bit set must be distinguishable from the four pte types + * empty, none, swap and file. + * + * irxt ipte irxt + * _PAGE_TYPE_EMPTY 1000 -> 1000 + * _PAGE_TYPE_NONE 1001 -> 1001 + * _PAGE_TYPE_SWAP 1011 -> 1011 + * _PAGE_TYPE_FILE 11?1 -> 11?1 + * _PAGE_TYPE_RO 0100 -> 1100 + * _PAGE_TYPE_RW 0000 -> 1000 + * + * pte_none is true for bits combinations 1000, 1010, 1100, 1110 + * pte_present is true for bits combinations 0000, 0010, 0100, 0110, 1001 + * pte_file is true for bits combinations 1101, 1111 + * swap pte is 1011 and 0001, 0011, 0101, 0111 are invalid. + */ + +#ifndef __s390x__ + +/* Bits in the segment table address-space-control-element */ +#define _ASCE_SPACE_SWITCH 0x80000000UL /* space switch event */ +#define _ASCE_ORIGIN_MASK 0x7ffff000UL /* segment table origin */ +#define _ASCE_PRIVATE_SPACE 0x100 /* private space control */ +#define _ASCE_ALT_EVENT 0x80 /* storage alteration event control */ +#define _ASCE_TABLE_LENGTH 0x7f /* 128 x 64 entries = 8k */ + +/* Bits in the segment table entry */ +#define _SEGMENT_ENTRY_ORIGIN 0x7fffffc0UL /* page table origin */ +#define _SEGMENT_ENTRY_RO 0x200 /* page protection bit */ +#define _SEGMENT_ENTRY_INV 0x20 /* invalid segment table entry */ +#define _SEGMENT_ENTRY_COMMON 0x10 /* common segment bit */ +#define _SEGMENT_ENTRY_PTL 0x0f /* page table length */ + +#define _SEGMENT_ENTRY (_SEGMENT_ENTRY_PTL) +#define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV) + +/* Page status table bits for virtualization */ +#define RCP_ACC_BITS 0xf0000000UL +#define RCP_FP_BIT 0x08000000UL +#define RCP_PCL_BIT 0x00800000UL +#define RCP_HR_BIT 0x00400000UL +#define RCP_HC_BIT 0x00200000UL +#define RCP_GR_BIT 0x00040000UL +#define RCP_GC_BIT 0x00020000UL + +/* User dirty / referenced bit for KVM's migration feature */ +#define KVM_UR_BIT 0x00008000UL +#define KVM_UC_BIT 0x00004000UL + +#else /* __s390x__ */ + +/* Bits in the segment/region table address-space-control-element */ +#define _ASCE_ORIGIN ~0xfffUL/* segment table origin */ +#define _ASCE_PRIVATE_SPACE 0x100 /* private space control */ +#define _ASCE_ALT_EVENT 0x80 /* storage alteration event control */ +#define _ASCE_SPACE_SWITCH 0x40 /* space switch event */ +#define _ASCE_REAL_SPACE 0x20 /* real space control */ +#define _ASCE_TYPE_MASK 0x0c /* asce table type mask */ +#define _ASCE_TYPE_REGION1 0x0c /* region first table type */ +#define _ASCE_TYPE_REGION2 0x08 /* region second table type */ +#define _ASCE_TYPE_REGION3 0x04 /* region third table type */ +#define _ASCE_TYPE_SEGMENT 0x00 /* segment table type */ +#define _ASCE_TABLE_LENGTH 0x03 /* region table length */ + +/* Bits in the region table entry */ +#define _REGION_ENTRY_ORIGIN ~0xfffUL/* region/segment table origin */ +#define _REGION_ENTRY_INV 0x20 /* invalid region table entry */ +#define _REGION_ENTRY_TYPE_MASK 0x0c /* region/segment table type mask */ +#define _REGION_ENTRY_TYPE_R1 0x0c /* region first table type */ +#define _REGION_ENTRY_TYPE_R2 0x08 /* region second table type */ +#define _REGION_ENTRY_TYPE_R3 0x04 /* region third table type */ +#define _REGION_ENTRY_LENGTH 0x03 /* region third length */ + +#define _REGION1_ENTRY (_REGION_ENTRY_TYPE_R1 | _REGION_ENTRY_LENGTH) +#define _REGION1_ENTRY_EMPTY (_REGION_ENTRY_TYPE_R1 | _REGION_ENTRY_INV) +#define _REGION2_ENTRY (_REGION_ENTRY_TYPE_R2 | _REGION_ENTRY_LENGTH) +#define _REGION2_ENTRY_EMPTY (_REGION_ENTRY_TYPE_R2 | _REGION_ENTRY_INV) +#define _REGION3_ENTRY (_REGION_ENTRY_TYPE_R3 | _REGION_ENTRY_LENGTH) +#define _REGION3_ENTRY_EMPTY (_REGION_ENTRY_TYPE_R3 | _REGION_ENTRY_INV) + +/* Bits in the segment table entry */ +#define _SEGMENT_ENTRY_ORIGIN ~0x7ffUL/* segment table origin */ +#define _SEGMENT_ENTRY_RO 0x200 /* page protection bit */ +#define _SEGMENT_ENTRY_INV 0x20 /* invalid segment table entry */ + +#define _SEGMENT_ENTRY (0) +#define _SEGMENT_ENTRY_EMPTY (_SEGMENT_ENTRY_INV) + +#define _SEGMENT_ENTRY_LARGE 0x400 /* STE-format control, large page */ +#define _SEGMENT_ENTRY_CO 0x100 /* change-recording override */ + +/* Page status table bits for virtualization */ +#define RCP_ACC_BITS 0xf000000000000000UL +#define RCP_FP_BIT 0x0800000000000000UL +#define RCP_PCL_BIT 0x0080000000000000UL +#define RCP_HR_BIT 0x0040000000000000UL +#define RCP_HC_BIT 0x0020000000000000UL +#define RCP_GR_BIT 0x0004000000000000UL +#define RCP_GC_BIT 0x0002000000000000UL + +/* User dirty / referenced bit for KVM's migration feature */ +#define KVM_UR_BIT 0x0000800000000000UL +#define KVM_UC_BIT 0x0000400000000000UL + +#endif /* __s390x__ */ + +/* + * A user page table pointer has the space-switch-event bit, the + * private-space-control bit and the storage-alteration-event-control + * bit set. A kernel page table pointer doesn't need them. + */ +#define _ASCE_USER_BITS (_ASCE_SPACE_SWITCH | _ASCE_PRIVATE_SPACE | \ + _ASCE_ALT_EVENT) + +/* + * Page protection definitions. + */ +#define PAGE_NONE __pgprot(_PAGE_TYPE_NONE) +#define PAGE_RO __pgprot(_PAGE_TYPE_RO) +#define PAGE_RW __pgprot(_PAGE_TYPE_RW) + +#define PAGE_KERNEL PAGE_RW +#define PAGE_COPY PAGE_RO + +/* + * On s390 the page table entry has an invalid bit and a read-only bit. + * Read permission implies execute permission and write permission + * implies read permission. + */ + /*xwr*/ +#define __P000 PAGE_NONE +#define __P001 PAGE_RO +#define __P010 PAGE_RO +#define __P011 PAGE_RO +#define __P100 PAGE_RO +#define __P101 PAGE_RO +#define __P110 PAGE_RO +#define __P111 PAGE_RO + +#define __S000 PAGE_NONE +#define __S001 PAGE_RO +#define __S010 PAGE_RW +#define __S011 PAGE_RW +#define __S100 PAGE_RO +#define __S101 PAGE_RO +#define __S110 PAGE_RW +#define __S111 PAGE_RW + +static inline int mm_exclusive(struct mm_struct *mm) +{ + return likely(mm == current->active_mm && + atomic_read(&mm->context.attach_count) <= 1); +} + +static inline int mm_has_pgste(struct mm_struct *mm) +{ +#ifdef CONFIG_PGSTE + if (unlikely(mm->context.has_pgste)) + return 1; +#endif + return 0; +} +/* + * pgd/pmd/pte query functions + */ +#ifndef __s390x__ + +static inline int pgd_present(pgd_t pgd) { return 1; } +static inline int pgd_none(pgd_t pgd) { return 0; } +static inline int pgd_bad(pgd_t pgd) { return 0; } + +static inline int pud_present(pud_t pud) { return 1; } +static inline int pud_none(pud_t pud) { return 0; } +static inline int pud_bad(pud_t pud) { return 0; } + +#else /* __s390x__ */ + +static inline int pgd_present(pgd_t pgd) +{ + if ((pgd_val(pgd) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R2) + return 1; + return (pgd_val(pgd) & _REGION_ENTRY_ORIGIN) != 0UL; +} + +static inline int pgd_none(pgd_t pgd) +{ + if ((pgd_val(pgd) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R2) + return 0; + return (pgd_val(pgd) & _REGION_ENTRY_INV) != 0UL; +} + +static inline int pgd_bad(pgd_t pgd) +{ + /* + * With dynamic page table levels the pgd can be a region table + * entry or a segment table entry. Check for the bit that are + * invalid for either table entry. + */ + unsigned long mask = + ~_SEGMENT_ENTRY_ORIGIN & ~_REGION_ENTRY_INV & + ~_REGION_ENTRY_TYPE_MASK & ~_REGION_ENTRY_LENGTH; + return (pgd_val(pgd) & mask) != 0; +} + +static inline int pud_present(pud_t pud) +{ + if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R3) + return 1; + return (pud_val(pud) & _REGION_ENTRY_ORIGIN) != 0UL; +} + +static inline int pud_none(pud_t pud) +{ + if ((pud_val(pud) & _REGION_ENTRY_TYPE_MASK) < _REGION_ENTRY_TYPE_R3) + return 0; + return (pud_val(pud) & _REGION_ENTRY_INV) != 0UL; +} + +static inline int pud_bad(pud_t pud) +{ + /* + * With dynamic page table levels the pud can be a region table + * entry or a segment table entry. Check for the bit that are + * invalid for either table entry. + */ + unsigned long mask = + ~_SEGMENT_ENTRY_ORIGIN & ~_REGION_ENTRY_INV & + ~_REGION_ENTRY_TYPE_MASK & ~_REGION_ENTRY_LENGTH; + return (pud_val(pud) & mask) != 0; +} + +#endif /* __s390x__ */ + +static inline int pmd_present(pmd_t pmd) +{ + return (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN) != 0UL; +} + +static inline int pmd_none(pmd_t pmd) +{ + return (pmd_val(pmd) & _SEGMENT_ENTRY_INV) != 0UL; +} + +static inline int pmd_bad(pmd_t pmd) +{ + unsigned long mask = ~_SEGMENT_ENTRY_ORIGIN & ~_SEGMENT_ENTRY_INV; + return (pmd_val(pmd) & mask) != _SEGMENT_ENTRY; +} + +static inline int pte_none(pte_t pte) +{ + return (pte_val(pte) & _PAGE_INVALID) && !(pte_val(pte) & _PAGE_SWT); +} + +static inline int pte_present(pte_t pte) +{ + unsigned long mask = _PAGE_RO | _PAGE_INVALID | _PAGE_SWT | _PAGE_SWX; + return (pte_val(pte) & mask) == _PAGE_TYPE_NONE || + (!(pte_val(pte) & _PAGE_INVALID) && + !(pte_val(pte) & _PAGE_SWT)); +} + +static inline int pte_file(pte_t pte) +{ + unsigned long mask = _PAGE_RO | _PAGE_INVALID | _PAGE_SWT; + return (pte_val(pte) & mask) == _PAGE_TYPE_FILE; +} + +static inline int pte_special(pte_t pte) +{ + return (pte_val(pte) & _PAGE_SPECIAL); +} + +#define __HAVE_ARCH_PTE_SAME +static inline int pte_same(pte_t a, pte_t b) +{ + return pte_val(a) == pte_val(b); +} + +static inline pgste_t pgste_get_lock(pte_t *ptep) +{ + unsigned long new = 0; +#ifdef CONFIG_PGSTE + unsigned long old; + + preempt_disable(); + asm( + " lg %0,%2\n" + "0: lgr %1,%0\n" + " nihh %0,0xff7f\n" /* clear RCP_PCL_BIT in old */ + " oihh %1,0x0080\n" /* set RCP_PCL_BIT in new */ + " csg %0,%1,%2\n" + " jl 0b\n" + : "=&d" (old), "=&d" (new), "=Q" (ptep[PTRS_PER_PTE]) + : "Q" (ptep[PTRS_PER_PTE]) : "cc"); +#endif + return __pgste(new); +} + +static inline void pgste_set_unlock(pte_t *ptep, pgste_t pgste) +{ +#ifdef CONFIG_PGSTE + asm( + " nihh %1,0xff7f\n" /* clear RCP_PCL_BIT */ + " stg %1,%0\n" + : "=Q" (ptep[PTRS_PER_PTE]) + : "d" (pgste_val(pgste)), "Q" (ptep[PTRS_PER_PTE]) : "cc"); + preempt_enable(); +#endif +} + +static inline pgste_t pgste_update_all(pte_t *ptep, pgste_t pgste) +{ +#ifdef CONFIG_PGSTE + unsigned long address, bits; + unsigned char skey; + + if (!pte_present(*ptep)) + return pgste; + address = pte_val(*ptep) & PAGE_MASK; + skey = page_get_storage_key(address); + bits = skey & (_PAGE_CHANGED | _PAGE_REFERENCED); + /* Clear page changed & referenced bit in the storage key */ + if (bits & _PAGE_CHANGED) + page_set_storage_key(address, skey ^ bits, 1); + else if (bits) + page_reset_referenced(address); + /* Transfer page changed & referenced bit to guest bits in pgste */ + pgste_val(pgste) |= bits << 48; /* RCP_GR_BIT & RCP_GC_BIT */ + /* Get host changed & referenced bits from pgste */ + bits |= (pgste_val(pgste) & (RCP_HR_BIT | RCP_HC_BIT)) >> 52; + /* Clear host bits in pgste. */ + pgste_val(pgste) &= ~(RCP_HR_BIT | RCP_HC_BIT); + pgste_val(pgste) &= ~(RCP_ACC_BITS | RCP_FP_BIT); + /* Copy page access key and fetch protection bit to pgste */ + pgste_val(pgste) |= + (unsigned long) (skey & (_PAGE_ACC_BITS | _PAGE_FP_BIT)) << 56; + /* Transfer changed and referenced to kvm user bits */ + pgste_val(pgste) |= bits << 45; /* KVM_UR_BIT & KVM_UC_BIT */ + /* Transfer changed & referenced to pte sofware bits */ + pte_val(*ptep) |= bits << 1; /* _PAGE_SWR & _PAGE_SWC */ +#endif + return pgste; + +} + +static inline pgste_t pgste_update_young(pte_t *ptep, pgste_t pgste) +{ +#ifdef CONFIG_PGSTE + int young; + + if (!pte_present(*ptep)) + return pgste; + young = page_reset_referenced(pte_val(*ptep) & PAGE_MASK); + /* Transfer page referenced bit to pte software bit (host view) */ + if (young || (pgste_val(pgste) & RCP_HR_BIT)) + pte_val(*ptep) |= _PAGE_SWR; + /* Clear host referenced bit in pgste. */ + pgste_val(pgste) &= ~RCP_HR_BIT; + /* Transfer page referenced bit to guest bit in pgste */ + pgste_val(pgste) |= (unsigned long) young << 50; /* set RCP_GR_BIT */ +#endif + return pgste; + +} + +static inline void pgste_set_pte(pte_t *ptep, pgste_t pgste, pte_t entry) +{ +#ifdef CONFIG_PGSTE + unsigned long address; + unsigned long okey, nkey; + + if (!pte_present(entry)) + return; + address = pte_val(entry) & PAGE_MASK; + okey = nkey = page_get_storage_key(address); + nkey &= ~(_PAGE_ACC_BITS | _PAGE_FP_BIT); + /* Set page access key and fetch protection bit from pgste */ + nkey |= (pgste_val(pgste) & (RCP_ACC_BITS | RCP_FP_BIT)) >> 56; + if (okey != nkey) + page_set_storage_key(address, nkey, 1); +#endif +} + +/** + * struct gmap_struct - guest address space + * @mm: pointer to the parent mm_struct + * @table: pointer to the page directory + * @asce: address space control element for gmap page table + * @crst_list: list of all crst tables used in the guest address space + */ +struct gmap { + struct list_head list; + struct mm_struct *mm; + unsigned long *table; + unsigned long asce; + struct list_head crst_list; +}; + +/** + * struct gmap_rmap - reverse mapping for segment table entries + * @next: pointer to the next gmap_rmap structure in the list + * @entry: pointer to a segment table entry + */ +struct gmap_rmap { + struct list_head list; + unsigned long *entry; +}; + +/** + * struct gmap_pgtable - gmap information attached to a page table + * @vmaddr: address of the 1MB segment in the process virtual memory + * @mapper: list of segment table entries maping a page table + */ +struct gmap_pgtable { + unsigned long vmaddr; + struct list_head mapper; +}; + +struct gmap *gmap_alloc(struct mm_struct *mm); +void gmap_free(struct gmap *gmap); +void gmap_enable(struct gmap *gmap); +void gmap_disable(struct gmap *gmap); +int gmap_map_segment(struct gmap *gmap, unsigned long from, + unsigned long to, unsigned long length); +int gmap_unmap_segment(struct gmap *gmap, unsigned long to, unsigned long len); +unsigned long __gmap_fault(unsigned long address, struct gmap *); +unsigned long gmap_fault(unsigned long address, struct gmap *); +void gmap_discard(unsigned long from, unsigned long to, struct gmap *); + +/* + * Certain architectures need to do special things when PTEs + * within a page table are directly modified. Thus, the following + * hook is made available. + */ +static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, + pte_t *ptep, pte_t entry) +{ + pgste_t pgste; + + if (mm_has_pgste(mm)) { + pgste = pgste_get_lock(ptep); + pgste_set_pte(ptep, pgste, entry); + *ptep = entry; + pgste_set_unlock(ptep, pgste); + } else + *ptep = entry; +} + +/* + * query functions pte_write/pte_dirty/pte_young only work if + * pte_present() is true. Undefined behaviour if not.. + */ +static inline int pte_write(pte_t pte) +{ + return (pte_val(pte) & _PAGE_RO) == 0; +} + +static inline int pte_dirty(pte_t pte) +{ +#ifdef CONFIG_PGSTE + if (pte_val(pte) & _PAGE_SWC) + return 1; +#endif + return 0; +} + +static inline int pte_young(pte_t pte) +{ +#ifdef CONFIG_PGSTE + if (pte_val(pte) & _PAGE_SWR) + return 1; +#endif + return 0; +} + +/* + * pgd/pmd/pte modification functions + */ + +static inline void pgd_clear(pgd_t *pgd) +{ +#ifdef __s390x__ + if ((pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R2) + pgd_val(*pgd) = _REGION2_ENTRY_EMPTY; +#endif +} + +static inline void pud_clear(pud_t *pud) +{ +#ifdef __s390x__ + if ((pud_val(*pud) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3) + pud_val(*pud) = _REGION3_ENTRY_EMPTY; +#endif +} + +static inline void pmd_clear(pmd_t *pmdp) +{ + pmd_val(*pmdp) = _SEGMENT_ENTRY_EMPTY; +} + +static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) +{ + pte_val(*ptep) = _PAGE_TYPE_EMPTY; +} + +/* + * The following pte modification functions only work if + * pte_present() is true. Undefined behaviour if not.. + */ +static inline pte_t pte_modify(pte_t pte, pgprot_t newprot) +{ + pte_val(pte) &= _PAGE_CHG_MASK; + pte_val(pte) |= pgprot_val(newprot); + return pte; +} + +static inline pte_t pte_wrprotect(pte_t pte) +{ + /* Do not clobber _PAGE_TYPE_NONE pages! */ + if (!(pte_val(pte) & _PAGE_INVALID)) + pte_val(pte) |= _PAGE_RO; + return pte; +} + +static inline pte_t pte_mkwrite(pte_t pte) +{ + pte_val(pte) &= ~_PAGE_RO; + return pte; +} + +static inline pte_t pte_mkclean(pte_t pte) +{ +#ifdef CONFIG_PGSTE + pte_val(pte) &= ~_PAGE_SWC; +#endif + return pte; +} + +static inline pte_t pte_mkdirty(pte_t pte) +{ + return pte; +} + +static inline pte_t pte_mkold(pte_t pte) +{ +#ifdef CONFIG_PGSTE + pte_val(pte) &= ~_PAGE_SWR; +#endif + return pte; +} + +static inline pte_t pte_mkyoung(pte_t pte) +{ + return pte; +} + +static inline pte_t pte_mkspecial(pte_t pte) +{ + pte_val(pte) |= _PAGE_SPECIAL; + return pte; +} + +#ifdef CONFIG_HUGETLB_PAGE +static inline pte_t pte_mkhuge(pte_t pte) +{ + /* + * PROT_NONE needs to be remapped from the pte type to the ste type. + * The HW invalid bit is also different for pte and ste. The pte + * invalid bit happens to be the same as the ste _SEGMENT_ENTRY_LARGE + * bit, so we don't have to clear it. + */ + if (pte_val(pte) & _PAGE_INVALID) { + if (pte_val(pte) & _PAGE_SWT) + pte_val(pte) |= _HPAGE_TYPE_NONE; + pte_val(pte) |= _SEGMENT_ENTRY_INV; + } + /* + * Clear SW pte bits SWT and SWX, there are no SW bits in a segment + * table entry. + */ + pte_val(pte) &= ~(_PAGE_SWT | _PAGE_SWX); + /* + * Also set the change-override bit because we don't need dirty bit + * tracking for hugetlbfs pages. + */ + pte_val(pte) |= (_SEGMENT_ENTRY_LARGE | _SEGMENT_ENTRY_CO); + return pte; +} +#endif + +/* + * Get (and clear) the user dirty bit for a pte. + */ +static inline int ptep_test_and_clear_user_dirty(struct mm_struct *mm, + pte_t *ptep) +{ + pgste_t pgste; + int dirty = 0; + + if (mm_has_pgste(mm)) { + pgste = pgste_get_lock(ptep); + pgste = pgste_update_all(ptep, pgste); + dirty = !!(pgste_val(pgste) & KVM_UC_BIT); + pgste_val(pgste) &= ~KVM_UC_BIT; + pgste_set_unlock(ptep, pgste); + return dirty; + } + return dirty; +} + +/* + * Get (and clear) the user referenced bit for a pte. + */ +static inline int ptep_test_and_clear_user_young(struct mm_struct *mm, + pte_t *ptep) +{ + pgste_t pgste; + int young = 0; + + if (mm_has_pgste(mm)) { + pgste = pgste_get_lock(ptep); + pgste = pgste_update_young(ptep, pgste); + young = !!(pgste_val(pgste) & KVM_UR_BIT); + pgste_val(pgste) &= ~KVM_UR_BIT; + pgste_set_unlock(ptep, pgste); + } + return young; +} + +#define __HAVE_ARCH_PTEP_TEST_AND_CLEAR_YOUNG +static inline int ptep_test_and_clear_young(struct vm_area_struct *vma, + unsigned long addr, pte_t *ptep) +{ + pgste_t pgste; + pte_t pte; + + if (mm_has_pgste(vma->vm_mm)) { + pgste = pgste_get_lock(ptep); + pgste = pgste_update_young(ptep, pgste); + pte = *ptep; + *ptep = pte_mkold(pte); + pgste_set_unlock(ptep, pgste); + return pte_young(pte); + } + return 0; +} + +#define __HAVE_ARCH_PTEP_CLEAR_YOUNG_FLUSH +static inline int ptep_clear_flush_young(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) +{ + /* No need to flush TLB + * On s390 reference bits are in storage key and never in TLB + * With virtualization we handle the reference bit, without we + * we can simply return */ + return ptep_test_and_clear_young(vma, address, ptep); +} + +static inline void __ptep_ipte(unsigned long address, pte_t *ptep) +{ + if (!(pte_val(*ptep) & _PAGE_INVALID)) { +#ifndef __s390x__ + /* pto must point to the start of the segment table */ + pte_t *pto = (pte_t *) (((unsigned long) ptep) & 0x7ffffc00); +#else + /* ipte in zarch mode can do the math */ + pte_t *pto = ptep; +#endif + asm volatile( + " ipte %2,%3" + : "=m" (*ptep) : "m" (*ptep), + "a" (pto), "a" (address)); + } +} + +/* + * This is hard to understand. ptep_get_and_clear and ptep_clear_flush + * both clear the TLB for the unmapped pte. The reason is that + * ptep_get_and_clear is used in common code (e.g. change_pte_range) + * to modify an active pte. The sequence is + * 1) ptep_get_and_clear + * 2) set_pte_at + * 3) flush_tlb_range + * On s390 the tlb needs to get flushed with the modification of the pte + * if the pte is active. The only way how this can be implemented is to + * have ptep_get_and_clear do the tlb flush. In exchange flush_tlb_range + * is a nop. + */ +#define __HAVE_ARCH_PTEP_GET_AND_CLEAR +static inline pte_t ptep_get_and_clear(struct mm_struct *mm, + unsigned long address, pte_t *ptep) +{ + pgste_t pgste; + pte_t pte; + + mm->context.flush_mm = 1; + if (mm_has_pgste(mm)) + pgste = pgste_get_lock(ptep); + + pte = *ptep; + if (!mm_exclusive(mm)) + __ptep_ipte(address, ptep); + pte_val(*ptep) = _PAGE_TYPE_EMPTY; + + if (mm_has_pgste(mm)) { + pgste = pgste_update_all(&pte, pgste); + pgste_set_unlock(ptep, pgste); + } + return pte; +} + +#define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION +static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, + unsigned long address, + pte_t *ptep) +{ + pte_t pte; + + mm->context.flush_mm = 1; + if (mm_has_pgste(mm)) + pgste_get_lock(ptep); + + pte = *ptep; + if (!mm_exclusive(mm)) + __ptep_ipte(address, ptep); + return pte; +} + +static inline void ptep_modify_prot_commit(struct mm_struct *mm, + unsigned long address, + pte_t *ptep, pte_t pte) +{ + *ptep = pte; + if (mm_has_pgste(mm)) + pgste_set_unlock(ptep, *(pgste_t *)(ptep + PTRS_PER_PTE)); +} + +#define __HAVE_ARCH_PTEP_CLEAR_FLUSH +static inline pte_t ptep_clear_flush(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep) +{ + pgste_t pgste; + pte_t pte; + + if (mm_has_pgste(vma->vm_mm)) + pgste = pgste_get_lock(ptep); + + pte = *ptep; + __ptep_ipte(address, ptep); + pte_val(*ptep) = _PAGE_TYPE_EMPTY; + + if (mm_has_pgste(vma->vm_mm)) { + pgste = pgste_update_all(&pte, pgste); + pgste_set_unlock(ptep, pgste); + } + return pte; +} + +/* + * The batched pte unmap code uses ptep_get_and_clear_full to clear the + * ptes. Here an optimization is possible. tlb_gather_mmu flushes all + * tlbs of an mm if it can guarantee that the ptes of the mm_struct + * cannot be accessed while the batched unmap is running. In this case + * full==1 and a simple pte_clear is enough. See tlb.h. + */ +#define __HAVE_ARCH_PTEP_GET_AND_CLEAR_FULL +static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, + unsigned long address, + pte_t *ptep, int full) +{ + pgste_t pgste; + pte_t pte; + + if (mm_has_pgste(mm)) + pgste = pgste_get_lock(ptep); + + pte = *ptep; + if (!full) + __ptep_ipte(address, ptep); + pte_val(*ptep) = _PAGE_TYPE_EMPTY; + + if (mm_has_pgste(mm)) { + pgste = pgste_update_all(&pte, pgste); + pgste_set_unlock(ptep, pgste); + } + return pte; +} + +#define __HAVE_ARCH_PTEP_SET_WRPROTECT +static inline pte_t ptep_set_wrprotect(struct mm_struct *mm, + unsigned long address, pte_t *ptep) +{ + pgste_t pgste; + pte_t pte = *ptep; + + if (pte_write(pte)) { + mm->context.flush_mm = 1; + if (mm_has_pgste(mm)) + pgste = pgste_get_lock(ptep); + + if (!mm_exclusive(mm)) + __ptep_ipte(address, ptep); + *ptep = pte_wrprotect(pte); + + if (mm_has_pgste(mm)) + pgste_set_unlock(ptep, pgste); + } + return pte; +} + +#define __HAVE_ARCH_PTEP_SET_ACCESS_FLAGS +static inline int ptep_set_access_flags(struct vm_area_struct *vma, + unsigned long address, pte_t *ptep, + pte_t entry, int dirty) +{ + pgste_t pgste; + + if (pte_same(*ptep, entry)) + return 0; + if (mm_has_pgste(vma->vm_mm)) + pgste = pgste_get_lock(ptep); + + __ptep_ipte(address, ptep); + *ptep = entry; + + if (mm_has_pgste(vma->vm_mm)) + pgste_set_unlock(ptep, pgste); + return 1; +} + +/* + * Conversion functions: convert a page and protection to a page entry, + * and a page entry and page directory to the page they refer to. + */ +static inline pte_t mk_pte_phys(unsigned long physpage, pgprot_t pgprot) +{ + pte_t __pte; + pte_val(__pte) = physpage + pgprot_val(pgprot); + return __pte; +} + +static inline pte_t mk_pte(struct page *page, pgprot_t pgprot) +{ + unsigned long physpage = page_to_phys(page); + + return mk_pte_phys(physpage, pgprot); +} + +#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1)) +#define pud_index(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1)) +#define pmd_index(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1)) +#define pte_index(address) (((address) >> PAGE_SHIFT) & (PTRS_PER_PTE-1)) + +#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address)) +#define pgd_offset_k(address) pgd_offset(&init_mm, address) + +#ifndef __s390x__ + +#define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN) +#define pud_deref(pmd) ({ BUG(); 0UL; }) +#define pgd_deref(pmd) ({ BUG(); 0UL; }) + +#define pud_offset(pgd, address) ((pud_t *) pgd) +#define pmd_offset(pud, address) ((pmd_t *) pud + pmd_index(address)) + +#else /* __s390x__ */ + +#define pmd_deref(pmd) (pmd_val(pmd) & _SEGMENT_ENTRY_ORIGIN) +#define pud_deref(pud) (pud_val(pud) & _REGION_ENTRY_ORIGIN) +#define pgd_deref(pgd) (pgd_val(pgd) & _REGION_ENTRY_ORIGIN) + +static inline pud_t *pud_offset(pgd_t *pgd, unsigned long address) +{ + pud_t *pud = (pud_t *) pgd; + if ((pgd_val(*pgd) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R2) + pud = (pud_t *) pgd_deref(*pgd); + return pud + pud_index(address); +} + +static inline pmd_t *pmd_offset(pud_t *pud, unsigned long address) +{ + pmd_t *pmd = (pmd_t *) pud; + if ((pud_val(*pud) & _REGION_ENTRY_TYPE_MASK) == _REGION_ENTRY_TYPE_R3) + pmd = (pmd_t *) pud_deref(*pud); + return pmd + pmd_index(address); +} + +#endif /* __s390x__ */ + +#define pfn_pte(pfn,pgprot) mk_pte_phys(__pa((pfn) << PAGE_SHIFT),(pgprot)) +#define pte_pfn(x) (pte_val(x) >> PAGE_SHIFT) +#define pte_page(x) pfn_to_page(pte_pfn(x)) + +#define pmd_page(pmd) pfn_to_page(pmd_val(pmd) >> PAGE_SHIFT) + +/* Find an entry in the lowest level page table.. */ +#define pte_offset(pmd, addr) ((pte_t *) pmd_deref(*(pmd)) + pte_index(addr)) +#define pte_offset_kernel(pmd, address) pte_offset(pmd,address) +#define pte_offset_map(pmd, address) pte_offset_kernel(pmd, address) +#define pte_unmap(pte) do { } while (0) + +/* + * 31 bit swap entry format: + * A page-table entry has some bits we have to treat in a special way. + * Bits 0, 20 and bit 23 have to be zero, otherwise an specification + * exception will occur instead of a page translation exception. The + * specifiation exception has the bad habit not to store necessary + * information in the lowcore. + * Bit 21 and bit 22 are the page invalid bit and the page protection + * bit. We set both to indicate a swapped page. + * Bit 30 and 31 are used to distinguish the different page types. For + * a swapped page these bits need to be zero. + * This leaves the bits 1-19 and bits 24-29 to store type and offset. + * We use the 5 bits from 25-29 for the type and the 20 bits from 1-19 + * plus 24 for the offset. + * 0| offset |0110|o|type |00| + * 0 0000000001111111111 2222 2 22222 33 + * 0 1234567890123456789 0123 4 56789 01 + * + * 64 bit swap entry format: + * A page-table entry has some bits we have to treat in a special way. + * Bits 52 and bit 55 have to be zero, otherwise an specification + * exception will occur instead of a page translation exception. The + * specifiation exception has the bad habit not to store necessary + * information in the lowcore. + * Bit 53 and bit 54 are the page invalid bit and the page protection + * bit. We set both to indicate a swapped page. + * Bit 62 and 63 are used to distinguish the different page types. For + * a swapped page these bits need to be zero. + * This leaves the bits 0-51 and bits 56-61 to store type and offset. + * We use the 5 bits from 57-61 for the type and the 53 bits from 0-51 + * plus 56 for the offset. + * | offset |0110|o|type |00| + * 0000000000111111111122222222223333333333444444444455 5555 5 55566 66 + * 0123456789012345678901234567890123456789012345678901 2345 6 78901 23 + */ +#ifndef __s390x__ +#define __SWP_OFFSET_MASK (~0UL >> 12) +#else +#define __SWP_OFFSET_MASK (~0UL >> 11) +#endif +static inline pte_t mk_swap_pte(unsigned long type, unsigned long offset) +{ + pte_t pte; + offset &= __SWP_OFFSET_MASK; + pte_val(pte) = _PAGE_TYPE_SWAP | ((type & 0x1f) << 2) | + ((offset & 1UL) << 7) | ((offset & ~1UL) << 11); + return pte; +} + +#define __swp_type(entry) (((entry).val >> 2) & 0x1f) +#define __swp_offset(entry) (((entry).val >> 11) | (((entry).val >> 7) & 1)) +#define __swp_entry(type,offset) ((swp_entry_t) { pte_val(mk_swap_pte((type),(offset))) }) + +#define __pte_to_swp_entry(pte) ((swp_entry_t) { pte_val(pte) }) +#define __swp_entry_to_pte(x) ((pte_t) { (x).val }) + +#ifndef __s390x__ +# define PTE_FILE_MAX_BITS 26 +#else /* __s390x__ */ +# define PTE_FILE_MAX_BITS 59 +#endif /* __s390x__ */ + +#define pte_to_pgoff(__pte) \ + ((((__pte).pte >> 12) << 7) + (((__pte).pte >> 1) & 0x7f)) + +#define pgoff_to_pte(__off) \ + ((pte_t) { ((((__off) & 0x7f) << 1) + (((__off) >> 7) << 12)) \ + | _PAGE_TYPE_FILE }) + +#endif /* !__ASSEMBLY__ */ + +#define kern_addr_valid(addr) (1) + +extern int vmem_add_mapping(unsigned long start, unsigned long size); +extern int vmem_remove_mapping(unsigned long start, unsigned long size); +extern int s390_enable_sie(void); + +/* + * No page table caches to initialise + */ +#define pgtable_cache_init() do { } while (0) + +#include <asm-generic/pgtable.h> + +#endif /* _S390_PAGE_H */ diff --git a/arch/s390/include/asm/poll.h b/arch/s390/include/asm/poll.h new file mode 100644 index 00000000..c98509d3 --- /dev/null +++ b/arch/s390/include/asm/poll.h @@ -0,0 +1 @@ +#include <asm-generic/poll.h> diff --git a/arch/s390/include/asm/posix_types.h b/arch/s390/include/asm/posix_types.h new file mode 100644 index 00000000..edf8527f --- /dev/null +++ b/arch/s390/include/asm/posix_types.h @@ -0,0 +1,57 @@ +/* + * include/asm-s390/posix_types.h + * + * S390 version + * + */ + +#ifndef __ARCH_S390_POSIX_TYPES_H +#define __ARCH_S390_POSIX_TYPES_H + +/* + * This file is generally used by user-level software, so you need to + * be a little careful about namespace pollution etc. Also, we cannot + * assume GCC is being used. + */ + +typedef unsigned long __kernel_size_t; +#define __kernel_size_t __kernel_size_t + +typedef unsigned short __kernel_old_dev_t; +#define __kernel_old_dev_t __kernel_old_dev_t + +#ifndef __s390x__ + +typedef unsigned long __kernel_ino_t; +typedef unsigned short __kernel_mode_t; +typedef unsigned short __kernel_nlink_t; +typedef unsigned short __kernel_ipc_pid_t; +typedef unsigned short __kernel_uid_t; +typedef unsigned short __kernel_gid_t; +typedef int __kernel_ssize_t; +typedef int __kernel_ptrdiff_t; + +#else /* __s390x__ */ + +typedef unsigned int __kernel_ino_t; +typedef unsigned int __kernel_mode_t; +typedef unsigned int __kernel_nlink_t; +typedef int __kernel_ipc_pid_t; +typedef unsigned int __kernel_uid_t; +typedef unsigned int __kernel_gid_t; +typedef long __kernel_ssize_t; +typedef long __kernel_ptrdiff_t; +typedef unsigned long __kernel_sigset_t; /* at least 32 bits */ + +#endif /* __s390x__ */ + +#define __kernel_ino_t __kernel_ino_t +#define __kernel_mode_t __kernel_mode_t +#define __kernel_nlink_t __kernel_nlink_t +#define __kernel_ipc_pid_t __kernel_ipc_pid_t +#define __kernel_uid_t __kernel_uid_t +#define __kernel_gid_t __kernel_gid_t + +#include <asm-generic/posix_types.h> + +#endif diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h new file mode 100644 index 00000000..d499b30e --- /dev/null +++ b/arch/s390/include/asm/processor.h @@ -0,0 +1,363 @@ +/* + * include/asm-s390/processor.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Hartmut Penner (hp@de.ibm.com), + * Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/processor.h" + * Copyright (C) 1994, Linus Torvalds + */ + +#ifndef __ASM_S390_PROCESSOR_H +#define __ASM_S390_PROCESSOR_H + +#include <linux/linkage.h> +#include <linux/irqflags.h> +#include <asm/cpu.h> +#include <asm/page.h> +#include <asm/ptrace.h> +#include <asm/setup.h> + +#ifdef __KERNEL__ +/* + * Default implementation of macro that returns current + * instruction pointer ("program counter"). + */ +#define current_text_addr() ({ void *pc; asm("basr %0,0" : "=a" (pc)); pc; }) + +static inline void get_cpu_id(struct cpuid *ptr) +{ + asm volatile("stidp %0" : "=Q" (*ptr)); +} + +extern void s390_adjust_jiffies(void); +extern int get_cpu_capability(unsigned int *); +extern const struct seq_operations cpuinfo_op; +extern int sysctl_ieee_emulation_warnings; + +/* + * User space process size: 2GB for 31 bit, 4TB or 8PT for 64 bit. + */ +#ifndef __s390x__ + +#define TASK_SIZE (1UL << 31) +#define TASK_UNMAPPED_BASE (1UL << 30) + +#else /* __s390x__ */ + +#define TASK_SIZE_OF(tsk) ((tsk)->mm->context.asce_limit) +#define TASK_UNMAPPED_BASE (test_thread_flag(TIF_31BIT) ? \ + (1UL << 30) : (1UL << 41)) +#define TASK_SIZE TASK_SIZE_OF(current) + +#endif /* __s390x__ */ + +#ifdef __KERNEL__ + +#ifndef __s390x__ +#define STACK_TOP (1UL << 31) +#define STACK_TOP_MAX (1UL << 31) +#else /* __s390x__ */ +#define STACK_TOP (1UL << (test_thread_flag(TIF_31BIT) ? 31:42)) +#define STACK_TOP_MAX (1UL << 42) +#endif /* __s390x__ */ + + +#endif + +#define HAVE_ARCH_PICK_MMAP_LAYOUT + +typedef struct { + __u32 ar4; +} mm_segment_t; + +/* + * Thread structure + */ +struct thread_struct { + s390_fp_regs fp_regs; + unsigned int acrs[NUM_ACRS]; + unsigned long ksp; /* kernel stack pointer */ + mm_segment_t mm_segment; + unsigned long gmap_addr; /* address of last gmap fault. */ + struct per_regs per_user; /* User specified PER registers */ + struct per_event per_event; /* Cause of the last PER trap */ + /* pfault_wait is used to block the process on a pfault event */ + unsigned long pfault_wait; + struct list_head list; +}; + +typedef struct thread_struct thread_struct; + +/* + * Stack layout of a C stack frame. + */ +#ifndef __PACK_STACK +struct stack_frame { + unsigned long back_chain; + unsigned long empty1[5]; + unsigned long gprs[10]; + unsigned int empty2[8]; +}; +#else +struct stack_frame { + unsigned long empty1[5]; + unsigned int empty2[8]; + unsigned long gprs[10]; + unsigned long back_chain; +}; +#endif + +#define ARCH_MIN_TASKALIGN 8 + +#define INIT_THREAD { \ + .ksp = sizeof(init_stack) + (unsigned long) &init_stack, \ +} + +/* + * Do necessary setup to start up a new thread. + */ +#define start_thread(regs, new_psw, new_stackp) do { \ + regs->psw.mask = psw_user_bits | PSW_MASK_EA | PSW_MASK_BA; \ + regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ + regs->gprs[15] = new_stackp; \ +} while (0) + +#define start_thread31(regs, new_psw, new_stackp) do { \ + regs->psw.mask = psw_user_bits | PSW_MASK_BA; \ + regs->psw.addr = new_psw | PSW_ADDR_AMODE; \ + regs->gprs[15] = new_stackp; \ + crst_table_downgrade(current->mm, 1UL << 31); \ +} while (0) + +/* Forward declaration, a strange C thing */ +struct task_struct; +struct mm_struct; +struct seq_file; + +/* Free all resources held by a thread. */ +extern void release_thread(struct task_struct *); +extern int kernel_thread(int (*fn)(void *), void * arg, unsigned long flags); + +/* Prepare to copy thread state - unlazy all lazy status */ +#define prepare_to_copy(tsk) do { } while (0) + +/* + * Return saved PC of a blocked thread. + */ +extern unsigned long thread_saved_pc(struct task_struct *t); + +extern void show_code(struct pt_regs *regs); + +unsigned long get_wchan(struct task_struct *p); +#define task_pt_regs(tsk) ((struct pt_regs *) \ + (task_stack_page(tsk) + THREAD_SIZE) - 1) +#define KSTK_EIP(tsk) (task_pt_regs(tsk)->psw.addr) +#define KSTK_ESP(tsk) (task_pt_regs(tsk)->gprs[15]) + +static inline unsigned short stap(void) +{ + unsigned short cpu_address; + + asm volatile("stap %0" : "=m" (cpu_address)); + return cpu_address; +} + +/* + * Give up the time slice of the virtual PU. + */ +static inline void cpu_relax(void) +{ + if (MACHINE_HAS_DIAG44) + asm volatile("diag 0,0,68"); + barrier(); +} + +static inline void psw_set_key(unsigned int key) +{ + asm volatile("spka 0(%0)" : : "d" (key)); +} + +/* + * Set PSW to specified value. + */ +static inline void __load_psw(psw_t psw) +{ +#ifndef __s390x__ + asm volatile("lpsw %0" : : "Q" (psw) : "cc"); +#else + asm volatile("lpswe %0" : : "Q" (psw) : "cc"); +#endif +} + +/* + * Set PSW mask to specified value, while leaving the + * PSW addr pointing to the next instruction. + */ +static inline void __load_psw_mask (unsigned long mask) +{ + unsigned long addr; + psw_t psw; + + psw.mask = mask; + +#ifndef __s390x__ + asm volatile( + " basr %0,0\n" + "0: ahi %0,1f-0b\n" + " st %0,%O1+4(%R1)\n" + " lpsw %1\n" + "1:" + : "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc"); +#else /* __s390x__ */ + asm volatile( + " larl %0,1f\n" + " stg %0,%O1+8(%R1)\n" + " lpswe %1\n" + "1:" + : "=&d" (addr), "=Q" (psw) : "Q" (psw) : "memory", "cc"); +#endif /* __s390x__ */ +} + +/* + * Rewind PSW instruction address by specified number of bytes. + */ +static inline unsigned long __rewind_psw(psw_t psw, unsigned long ilc) +{ +#ifndef __s390x__ + if (psw.addr & PSW_ADDR_AMODE) + /* 31 bit mode */ + return (psw.addr - ilc) | PSW_ADDR_AMODE; + /* 24 bit mode */ + return (psw.addr - ilc) & ((1UL << 24) - 1); +#else + unsigned long mask; + + mask = (psw.mask & PSW_MASK_EA) ? -1UL : + (psw.mask & PSW_MASK_BA) ? (1UL << 31) - 1 : + (1UL << 24) - 1; + return (psw.addr - ilc) & mask; +#endif +} + +/* + * Function to drop a processor into disabled wait state + */ +static inline void __noreturn disabled_wait(unsigned long code) +{ + unsigned long ctl_buf; + psw_t dw_psw; + + dw_psw.mask = PSW_MASK_BASE | PSW_MASK_WAIT | PSW_MASK_BA | PSW_MASK_EA; + dw_psw.addr = code; + /* + * Store status and then load disabled wait psw, + * the processor is dead afterwards + */ +#ifndef __s390x__ + asm volatile( + " stctl 0,0,0(%2)\n" + " ni 0(%2),0xef\n" /* switch off protection */ + " lctl 0,0,0(%2)\n" + " stpt 0xd8\n" /* store timer */ + " stckc 0xe0\n" /* store clock comparator */ + " stpx 0x108\n" /* store prefix register */ + " stam 0,15,0x120\n" /* store access registers */ + " std 0,0x160\n" /* store f0 */ + " std 2,0x168\n" /* store f2 */ + " std 4,0x170\n" /* store f4 */ + " std 6,0x178\n" /* store f6 */ + " stm 0,15,0x180\n" /* store general registers */ + " stctl 0,15,0x1c0\n" /* store control registers */ + " oi 0x1c0,0x10\n" /* fake protection bit */ + " lpsw 0(%1)" + : "=m" (ctl_buf) + : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc"); +#else /* __s390x__ */ + asm volatile( + " stctg 0,0,0(%2)\n" + " ni 4(%2),0xef\n" /* switch off protection */ + " lctlg 0,0,0(%2)\n" + " lghi 1,0x1000\n" + " stpt 0x328(1)\n" /* store timer */ + " stckc 0x330(1)\n" /* store clock comparator */ + " stpx 0x318(1)\n" /* store prefix register */ + " stam 0,15,0x340(1)\n"/* store access registers */ + " stfpc 0x31c(1)\n" /* store fpu control */ + " std 0,0x200(1)\n" /* store f0 */ + " std 1,0x208(1)\n" /* store f1 */ + " std 2,0x210(1)\n" /* store f2 */ + " std 3,0x218(1)\n" /* store f3 */ + " std 4,0x220(1)\n" /* store f4 */ + " std 5,0x228(1)\n" /* store f5 */ + " std 6,0x230(1)\n" /* store f6 */ + " std 7,0x238(1)\n" /* store f7 */ + " std 8,0x240(1)\n" /* store f8 */ + " std 9,0x248(1)\n" /* store f9 */ + " std 10,0x250(1)\n" /* store f10 */ + " std 11,0x258(1)\n" /* store f11 */ + " std 12,0x260(1)\n" /* store f12 */ + " std 13,0x268(1)\n" /* store f13 */ + " std 14,0x270(1)\n" /* store f14 */ + " std 15,0x278(1)\n" /* store f15 */ + " stmg 0,15,0x280(1)\n"/* store general registers */ + " stctg 0,15,0x380(1)\n"/* store control registers */ + " oi 0x384(1),0x10\n"/* fake protection bit */ + " lpswe 0(%1)" + : "=m" (ctl_buf) + : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0", "1"); +#endif /* __s390x__ */ + while (1); +} + +/* + * Use to set psw mask except for the first byte which + * won't be changed by this function. + */ +static inline void +__set_psw_mask(unsigned long mask) +{ + __load_psw_mask(mask | (arch_local_save_flags() & ~(-1UL >> 8))); +} + +#define local_mcck_enable() \ + __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT | PSW_MASK_MCHECK) +#define local_mcck_disable() \ + __set_psw_mask(psw_kernel_bits | PSW_MASK_DAT) + +/* + * Basic Machine Check/Program Check Handler. + */ + +extern void s390_base_mcck_handler(void); +extern void s390_base_pgm_handler(void); +extern void s390_base_ext_handler(void); + +extern void (*s390_base_mcck_handler_fn)(void); +extern void (*s390_base_pgm_handler_fn)(void); +extern void (*s390_base_ext_handler_fn)(void); + +#define ARCH_LOW_ADDRESS_LIMIT 0x7fffffffUL + +#endif + +/* + * Helper macro for exception table entries + */ +#ifndef __s390x__ +#define EX_TABLE(_fault,_target) \ + ".section __ex_table,\"a\"\n" \ + " .align 4\n" \ + " .long " #_fault "," #_target "\n" \ + ".previous\n" +#else +#define EX_TABLE(_fault,_target) \ + ".section __ex_table,\"a\"\n" \ + " .align 8\n" \ + " .quad " #_fault "," #_target "\n" \ + ".previous\n" +#endif + +#endif /* __ASM_S390_PROCESSOR_H */ diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h new file mode 100644 index 00000000..aeb77f01 --- /dev/null +++ b/arch/s390/include/asm/ptrace.h @@ -0,0 +1,564 @@ +/* + * include/asm-s390/ptrace.h + * + * S390 version + * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com) + */ + +#ifndef _S390_PTRACE_H +#define _S390_PTRACE_H + +/* + * Offsets in the user_regs_struct. They are used for the ptrace + * system call and in entry.S + */ +#ifndef __s390x__ + +#define PT_PSWMASK 0x00 +#define PT_PSWADDR 0x04 +#define PT_GPR0 0x08 +#define PT_GPR1 0x0C +#define PT_GPR2 0x10 +#define PT_GPR3 0x14 +#define PT_GPR4 0x18 +#define PT_GPR5 0x1C +#define PT_GPR6 0x20 +#define PT_GPR7 0x24 +#define PT_GPR8 0x28 +#define PT_GPR9 0x2C +#define PT_GPR10 0x30 +#define PT_GPR11 0x34 +#define PT_GPR12 0x38 +#define PT_GPR13 0x3C +#define PT_GPR14 0x40 +#define PT_GPR15 0x44 +#define PT_ACR0 0x48 +#define PT_ACR1 0x4C +#define PT_ACR2 0x50 +#define PT_ACR3 0x54 +#define PT_ACR4 0x58 +#define PT_ACR5 0x5C +#define PT_ACR6 0x60 +#define PT_ACR7 0x64 +#define PT_ACR8 0x68 +#define PT_ACR9 0x6C +#define PT_ACR10 0x70 +#define PT_ACR11 0x74 +#define PT_ACR12 0x78 +#define PT_ACR13 0x7C +#define PT_ACR14 0x80 +#define PT_ACR15 0x84 +#define PT_ORIGGPR2 0x88 +#define PT_FPC 0x90 +/* + * A nasty fact of life that the ptrace api + * only supports passing of longs. + */ +#define PT_FPR0_HI 0x98 +#define PT_FPR0_LO 0x9C +#define PT_FPR1_HI 0xA0 +#define PT_FPR1_LO 0xA4 +#define PT_FPR2_HI 0xA8 +#define PT_FPR2_LO 0xAC +#define PT_FPR3_HI 0xB0 +#define PT_FPR3_LO 0xB4 +#define PT_FPR4_HI 0xB8 +#define PT_FPR4_LO 0xBC +#define PT_FPR5_HI 0xC0 +#define PT_FPR5_LO 0xC4 +#define PT_FPR6_HI 0xC8 +#define PT_FPR6_LO 0xCC +#define PT_FPR7_HI 0xD0 +#define PT_FPR7_LO 0xD4 +#define PT_FPR8_HI 0xD8 +#define PT_FPR8_LO 0XDC +#define PT_FPR9_HI 0xE0 +#define PT_FPR9_LO 0xE4 +#define PT_FPR10_HI 0xE8 +#define PT_FPR10_LO 0xEC +#define PT_FPR11_HI 0xF0 +#define PT_FPR11_LO 0xF4 +#define PT_FPR12_HI 0xF8 +#define PT_FPR12_LO 0xFC +#define PT_FPR13_HI 0x100 +#define PT_FPR13_LO 0x104 +#define PT_FPR14_HI 0x108 +#define PT_FPR14_LO 0x10C +#define PT_FPR15_HI 0x110 +#define PT_FPR15_LO 0x114 +#define PT_CR_9 0x118 +#define PT_CR_10 0x11C +#define PT_CR_11 0x120 +#define PT_IEEE_IP 0x13C +#define PT_LASTOFF PT_IEEE_IP +#define PT_ENDREGS 0x140-1 + +#define GPR_SIZE 4 +#define CR_SIZE 4 + +#define STACK_FRAME_OVERHEAD 96 /* size of minimum stack frame */ + +#else /* __s390x__ */ + +#define PT_PSWMASK 0x00 +#define PT_PSWADDR 0x08 +#define PT_GPR0 0x10 +#define PT_GPR1 0x18 +#define PT_GPR2 0x20 +#define PT_GPR3 0x28 +#define PT_GPR4 0x30 +#define PT_GPR5 0x38 +#define PT_GPR6 0x40 +#define PT_GPR7 0x48 +#define PT_GPR8 0x50 +#define PT_GPR9 0x58 +#define PT_GPR10 0x60 +#define PT_GPR11 0x68 +#define PT_GPR12 0x70 +#define PT_GPR13 0x78 +#define PT_GPR14 0x80 +#define PT_GPR15 0x88 +#define PT_ACR0 0x90 +#define PT_ACR1 0x94 +#define PT_ACR2 0x98 +#define PT_ACR3 0x9C +#define PT_ACR4 0xA0 +#define PT_ACR5 0xA4 +#define PT_ACR6 0xA8 +#define PT_ACR7 0xAC +#define PT_ACR8 0xB0 +#define PT_ACR9 0xB4 +#define PT_ACR10 0xB8 +#define PT_ACR11 0xBC +#define PT_ACR12 0xC0 +#define PT_ACR13 0xC4 +#define PT_ACR14 0xC8 +#define PT_ACR15 0xCC +#define PT_ORIGGPR2 0xD0 +#define PT_FPC 0xD8 +#define PT_FPR0 0xE0 +#define PT_FPR1 0xE8 +#define PT_FPR2 0xF0 +#define PT_FPR3 0xF8 +#define PT_FPR4 0x100 +#define PT_FPR5 0x108 +#define PT_FPR6 0x110 +#define PT_FPR7 0x118 +#define PT_FPR8 0x120 +#define PT_FPR9 0x128 +#define PT_FPR10 0x130 +#define PT_FPR11 0x138 +#define PT_FPR12 0x140 +#define PT_FPR13 0x148 +#define PT_FPR14 0x150 +#define PT_FPR15 0x158 +#define PT_CR_9 0x160 +#define PT_CR_10 0x168 +#define PT_CR_11 0x170 +#define PT_IEEE_IP 0x1A8 +#define PT_LASTOFF PT_IEEE_IP +#define PT_ENDREGS 0x1B0-1 + +#define GPR_SIZE 8 +#define CR_SIZE 8 + +#define STACK_FRAME_OVERHEAD 160 /* size of minimum stack frame */ + +#endif /* __s390x__ */ + +#define NUM_GPRS 16 +#define NUM_FPRS 16 +#define NUM_CRS 16 +#define NUM_ACRS 16 + +#define NUM_CR_WORDS 3 + +#define FPR_SIZE 8 +#define FPC_SIZE 4 +#define FPC_PAD_SIZE 4 /* gcc insists on aligning the fpregs */ +#define ACR_SIZE 4 + + +#define PTRACE_OLDSETOPTIONS 21 + +#ifndef __ASSEMBLY__ +#include <linux/stddef.h> +#include <linux/types.h> + +typedef union +{ + float f; + double d; + __u64 ui; + struct + { + __u32 hi; + __u32 lo; + } fp; +} freg_t; + +typedef struct +{ + __u32 fpc; + freg_t fprs[NUM_FPRS]; +} s390_fp_regs; + +#define FPC_EXCEPTION_MASK 0xF8000000 +#define FPC_FLAGS_MASK 0x00F80000 +#define FPC_DXC_MASK 0x0000FF00 +#define FPC_RM_MASK 0x00000003 +#define FPC_VALID_MASK 0xF8F8FF03 + +/* this typedef defines how a Program Status Word looks like */ +typedef struct +{ + unsigned long mask; + unsigned long addr; +} __attribute__ ((aligned(8))) psw_t; + +typedef struct +{ + __u32 mask; + __u32 addr; +} __attribute__ ((aligned(8))) psw_compat_t; + +#ifndef __s390x__ + +#define PSW_MASK_PER 0x40000000UL +#define PSW_MASK_DAT 0x04000000UL +#define PSW_MASK_IO 0x02000000UL +#define PSW_MASK_EXT 0x01000000UL +#define PSW_MASK_KEY 0x00F00000UL +#define PSW_MASK_BASE 0x00080000UL /* always one */ +#define PSW_MASK_MCHECK 0x00040000UL +#define PSW_MASK_WAIT 0x00020000UL +#define PSW_MASK_PSTATE 0x00010000UL +#define PSW_MASK_ASC 0x0000C000UL +#define PSW_MASK_CC 0x00003000UL +#define PSW_MASK_PM 0x00000F00UL +#define PSW_MASK_EA 0x00000000UL +#define PSW_MASK_BA 0x00000000UL + +#define PSW_MASK_USER 0x00003F00UL + +#define PSW_ADDR_AMODE 0x80000000UL +#define PSW_ADDR_INSN 0x7FFFFFFFUL + +#define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 20) + +#define PSW_ASC_PRIMARY 0x00000000UL +#define PSW_ASC_ACCREG 0x00004000UL +#define PSW_ASC_SECONDARY 0x00008000UL +#define PSW_ASC_HOME 0x0000C000UL + +#else /* __s390x__ */ + +#define PSW_MASK_PER 0x4000000000000000UL +#define PSW_MASK_DAT 0x0400000000000000UL +#define PSW_MASK_IO 0x0200000000000000UL +#define PSW_MASK_EXT 0x0100000000000000UL +#define PSW_MASK_BASE 0x0000000000000000UL +#define PSW_MASK_KEY 0x00F0000000000000UL +#define PSW_MASK_MCHECK 0x0004000000000000UL +#define PSW_MASK_WAIT 0x0002000000000000UL +#define PSW_MASK_PSTATE 0x0001000000000000UL +#define PSW_MASK_ASC 0x0000C00000000000UL +#define PSW_MASK_CC 0x0000300000000000UL +#define PSW_MASK_PM 0x00000F0000000000UL +#define PSW_MASK_EA 0x0000000100000000UL +#define PSW_MASK_BA 0x0000000080000000UL + +#define PSW_MASK_USER 0x00003F0180000000UL + +#define PSW_ADDR_AMODE 0x0000000000000000UL +#define PSW_ADDR_INSN 0xFFFFFFFFFFFFFFFFUL + +#define PSW_DEFAULT_KEY (((unsigned long) PAGE_DEFAULT_ACC) << 52) + +#define PSW_ASC_PRIMARY 0x0000000000000000UL +#define PSW_ASC_ACCREG 0x0000400000000000UL +#define PSW_ASC_SECONDARY 0x0000800000000000UL +#define PSW_ASC_HOME 0x0000C00000000000UL + +#endif /* __s390x__ */ + +#ifdef __KERNEL__ +extern long psw_kernel_bits; +extern long psw_user_bits; +#endif + +/* + * The s390_regs structure is used to define the elf_gregset_t. + */ +typedef struct +{ + psw_t psw; + unsigned long gprs[NUM_GPRS]; + unsigned int acrs[NUM_ACRS]; + unsigned long orig_gpr2; +} s390_regs; + +typedef struct +{ + psw_compat_t psw; + __u32 gprs[NUM_GPRS]; + __u32 acrs[NUM_ACRS]; + __u32 orig_gpr2; +} s390_compat_regs; + +typedef struct +{ + __u32 gprs_high[NUM_GPRS]; +} s390_compat_regs_high; + +#ifdef __KERNEL__ + +/* + * The pt_regs struct defines the way the registers are stored on + * the stack during a system call. + */ +struct pt_regs +{ + unsigned long args[1]; + psw_t psw; + unsigned long gprs[NUM_GPRS]; + unsigned long orig_gpr2; + unsigned int int_code; + unsigned long int_parm_long; +}; + +/* + * Program event recording (PER) register set. + */ +struct per_regs { + unsigned long control; /* PER control bits */ + unsigned long start; /* PER starting address */ + unsigned long end; /* PER ending address */ +}; + +/* + * PER event contains information about the cause of the last PER exception. + */ +struct per_event { + unsigned short cause; /* PER code, ATMID and AI */ + unsigned long address; /* PER address */ + unsigned char paid; /* PER access identification */ +}; + +/* + * Simplified per_info structure used to decode the ptrace user space ABI. + */ +struct per_struct_kernel { + unsigned long cr9; /* PER control bits */ + unsigned long cr10; /* PER starting address */ + unsigned long cr11; /* PER ending address */ + unsigned long bits; /* Obsolete software bits */ + unsigned long starting_addr; /* User specified start address */ + unsigned long ending_addr; /* User specified end address */ + unsigned short perc_atmid; /* PER trap ATMID */ + unsigned long address; /* PER trap instruction address */ + unsigned char access_id; /* PER trap access identification */ +}; + +#define PER_EVENT_MASK 0xE9000000UL + +#define PER_EVENT_BRANCH 0x80000000UL +#define PER_EVENT_IFETCH 0x40000000UL +#define PER_EVENT_STORE 0x20000000UL +#define PER_EVENT_STORE_REAL 0x08000000UL +#define PER_EVENT_NULLIFICATION 0x01000000UL + +#define PER_CONTROL_MASK 0x00a00000UL + +#define PER_CONTROL_BRANCH_ADDRESS 0x00800000UL +#define PER_CONTROL_ALTERATION 0x00200000UL + +#endif + +/* + * Now for the user space program event recording (trace) definitions. + * The following structures are used only for the ptrace interface, don't + * touch or even look at it if you don't want to modify the user-space + * ptrace interface. In particular stay away from it for in-kernel PER. + */ +typedef struct +{ + unsigned long cr[NUM_CR_WORDS]; +} per_cr_words; + +#define PER_EM_MASK 0xE8000000UL + +typedef struct +{ +#ifdef __s390x__ + unsigned : 32; +#endif /* __s390x__ */ + unsigned em_branching : 1; + unsigned em_instruction_fetch : 1; + /* + * Switching on storage alteration automatically fixes + * the storage alteration event bit in the users std. + */ + unsigned em_storage_alteration : 1; + unsigned em_gpr_alt_unused : 1; + unsigned em_store_real_address : 1; + unsigned : 3; + unsigned branch_addr_ctl : 1; + unsigned : 1; + unsigned storage_alt_space_ctl : 1; + unsigned : 21; + unsigned long starting_addr; + unsigned long ending_addr; +} per_cr_bits; + +typedef struct +{ + unsigned short perc_atmid; + unsigned long address; + unsigned char access_id; +} per_lowcore_words; + +typedef struct +{ + unsigned perc_branching : 1; + unsigned perc_instruction_fetch : 1; + unsigned perc_storage_alteration : 1; + unsigned perc_gpr_alt_unused : 1; + unsigned perc_store_real_address : 1; + unsigned : 3; + unsigned atmid_psw_bit_31 : 1; + unsigned atmid_validity_bit : 1; + unsigned atmid_psw_bit_32 : 1; + unsigned atmid_psw_bit_5 : 1; + unsigned atmid_psw_bit_16 : 1; + unsigned atmid_psw_bit_17 : 1; + unsigned si : 2; + unsigned long address; + unsigned : 4; + unsigned access_id : 4; +} per_lowcore_bits; + +typedef struct +{ + union { + per_cr_words words; + per_cr_bits bits; + } control_regs; + /* + * Use these flags instead of setting em_instruction_fetch + * directly they are used so that single stepping can be + * switched on & off while not affecting other tracing + */ + unsigned single_step : 1; + unsigned instruction_fetch : 1; + unsigned : 30; + /* + * These addresses are copied into cr10 & cr11 if single + * stepping is switched off + */ + unsigned long starting_addr; + unsigned long ending_addr; + union { + per_lowcore_words words; + per_lowcore_bits bits; + } lowcore; +} per_struct; + +typedef struct +{ + unsigned int len; + unsigned long kernel_addr; + unsigned long process_addr; +} ptrace_area; + +/* + * S/390 specific non posix ptrace requests. I chose unusual values so + * they are unlikely to clash with future ptrace definitions. + */ +#define PTRACE_PEEKUSR_AREA 0x5000 +#define PTRACE_POKEUSR_AREA 0x5001 +#define PTRACE_PEEKTEXT_AREA 0x5002 +#define PTRACE_PEEKDATA_AREA 0x5003 +#define PTRACE_POKETEXT_AREA 0x5004 +#define PTRACE_POKEDATA_AREA 0x5005 +#define PTRACE_GET_LAST_BREAK 0x5006 +#define PTRACE_PEEK_SYSTEM_CALL 0x5007 +#define PTRACE_POKE_SYSTEM_CALL 0x5008 + +/* + * PT_PROT definition is loosely based on hppa bsd definition in + * gdb/hppab-nat.c + */ +#define PTRACE_PROT 21 + +typedef enum +{ + ptprot_set_access_watchpoint, + ptprot_set_write_watchpoint, + ptprot_disable_watchpoint +} ptprot_flags; + +typedef struct +{ + unsigned long lowaddr; + unsigned long hiaddr; + ptprot_flags prot; +} ptprot_area; + +/* Sequence of bytes for breakpoint illegal instruction. */ +#define S390_BREAKPOINT {0x0,0x1} +#define S390_BREAKPOINT_U16 ((__u16)0x0001) +#define S390_SYSCALL_OPCODE ((__u16)0x0a00) +#define S390_SYSCALL_SIZE 2 + +/* + * The user_regs_struct defines the way the user registers are + * store on the stack for signal handling. + */ +struct user_regs_struct +{ + psw_t psw; + unsigned long gprs[NUM_GPRS]; + unsigned int acrs[NUM_ACRS]; + unsigned long orig_gpr2; + s390_fp_regs fp_regs; + /* + * These per registers are in here so that gdb can modify them + * itself as there is no "official" ptrace interface for hardware + * watchpoints. This is the way intel does it. + */ + per_struct per_info; + unsigned long ieee_instruction_pointer; /* obsolete, always 0 */ +}; + +#ifdef __KERNEL__ +/* + * These are defined as per linux/ptrace.h, which see. + */ +#define arch_has_single_step() (1) + +#define user_mode(regs) (((regs)->psw.mask & PSW_MASK_PSTATE) != 0) +#define instruction_pointer(regs) ((regs)->psw.addr & PSW_ADDR_INSN) +#define user_stack_pointer(regs)((regs)->gprs[15]) +#define profile_pc(regs) instruction_pointer(regs) + +static inline long regs_return_value(struct pt_regs *regs) +{ + return regs->gprs[2]; +} + +int regs_query_register_offset(const char *name); +const char *regs_query_register_name(unsigned int offset); +unsigned long regs_get_register(struct pt_regs *regs, unsigned int offset); +unsigned long regs_get_kernel_stack_nth(struct pt_regs *regs, unsigned int n); + +static inline unsigned long kernel_stack_pointer(struct pt_regs *regs) +{ + return regs->gprs[15] & PSW_ADDR_INSN; +} + +#endif /* __KERNEL__ */ +#endif /* __ASSEMBLY__ */ + +#endif /* _S390_PTRACE_H */ diff --git a/arch/s390/include/asm/qdio.h b/arch/s390/include/asm/qdio.h new file mode 100644 index 00000000..d75c8e78 --- /dev/null +++ b/arch/s390/include/asm/qdio.h @@ -0,0 +1,406 @@ +/* + * linux/include/asm-s390/qdio.h + * + * Copyright 2000,2008 IBM Corp. + * Author(s): Utz Bacher <utz.bacher@de.ibm.com> + * Jan Glauber <jang@linux.vnet.ibm.com> + * + */ +#ifndef __QDIO_H__ +#define __QDIO_H__ + +#include <linux/interrupt.h> +#include <asm/cio.h> +#include <asm/ccwdev.h> + +/* only use 4 queues to save some cachelines */ +#define QDIO_MAX_QUEUES_PER_IRQ 4 +#define QDIO_MAX_BUFFERS_PER_Q 128 +#define QDIO_MAX_BUFFERS_MASK (QDIO_MAX_BUFFERS_PER_Q - 1) +#define QDIO_MAX_ELEMENTS_PER_BUFFER 16 +#define QDIO_SBAL_SIZE 256 + +#define QDIO_QETH_QFMT 0 +#define QDIO_ZFCP_QFMT 1 +#define QDIO_IQDIO_QFMT 2 + +/** + * struct qdesfmt0 - queue descriptor, format 0 + * @sliba: storage list information block address + * @sla: storage list address + * @slsba: storage list state block address + * @akey: access key for DLIB + * @bkey: access key for SL + * @ckey: access key for SBALs + * @dkey: access key for SLSB + */ +struct qdesfmt0 { + u64 sliba; + u64 sla; + u64 slsba; + u32 : 32; + u32 akey : 4; + u32 bkey : 4; + u32 ckey : 4; + u32 dkey : 4; + u32 : 16; +} __attribute__ ((packed)); + +#define QDR_AC_MULTI_BUFFER_ENABLE 0x01 + +/** + * struct qdr - queue description record (QDR) + * @qfmt: queue format + * @pfmt: implementation dependent parameter format + * @ac: adapter characteristics + * @iqdcnt: input queue descriptor count + * @oqdcnt: output queue descriptor count + * @iqdsz: inpout queue descriptor size + * @oqdsz: output queue descriptor size + * @qiba: queue information block address + * @qkey: queue information block key + * @qdf0: queue descriptions + */ +struct qdr { + u32 qfmt : 8; + u32 pfmt : 8; + u32 : 8; + u32 ac : 8; + u32 : 8; + u32 iqdcnt : 8; + u32 : 8; + u32 oqdcnt : 8; + u32 : 8; + u32 iqdsz : 8; + u32 : 8; + u32 oqdsz : 8; + /* private: */ + u32 res[9]; + /* public: */ + u64 qiba; + u32 : 32; + u32 qkey : 4; + u32 : 28; + struct qdesfmt0 qdf0[126]; +} __attribute__ ((packed, aligned(4096))); + +#define QIB_AC_OUTBOUND_PCI_SUPPORTED 0x40 +#define QIB_RFLAGS_ENABLE_QEBSM 0x80 +#define QIB_RFLAGS_ENABLE_DATA_DIV 0x02 + +/** + * struct qib - queue information block (QIB) + * @qfmt: queue format + * @pfmt: implementation dependent parameter format + * @rflags: QEBSM + * @ac: adapter characteristics + * @isliba: absolute address of first input SLIB + * @osliba: absolute address of first output SLIB + * @ebcnam: adapter identifier in EBCDIC + * @parm: implementation dependent parameters + */ +struct qib { + u32 qfmt : 8; + u32 pfmt : 8; + u32 rflags : 8; + u32 ac : 8; + u32 : 32; + u64 isliba; + u64 osliba; + u32 : 32; + u32 : 32; + u8 ebcnam[8]; + /* private: */ + u8 res[88]; + /* public: */ + u8 parm[QDIO_MAX_BUFFERS_PER_Q]; +} __attribute__ ((packed, aligned(256))); + +/** + * struct slibe - storage list information block element (SLIBE) + * @parms: implementation dependent parameters + */ +struct slibe { + u64 parms; +}; + +/** + * struct qaob - queue asynchronous operation block + * @res0: reserved parameters + * @res1: reserved parameter + * @res2: reserved parameter + * @res3: reserved parameter + * @aorc: asynchronous operation return code + * @flags: internal flags + * @cbtbs: control block type + * @sb_count: number of storage blocks + * @sba: storage block element addresses + * @dcount: size of storage block elements + * @user0: user defineable value + * @res4: reserved paramater + * @user1: user defineable value + * @user2: user defineable value + */ +struct qaob { + u64 res0[6]; + u8 res1; + u8 res2; + u8 res3; + u8 aorc; + u8 flags; + u16 cbtbs; + u8 sb_count; + u64 sba[QDIO_MAX_ELEMENTS_PER_BUFFER]; + u16 dcount[QDIO_MAX_ELEMENTS_PER_BUFFER]; + u64 user0; + u64 res4[2]; + u64 user1; + u64 user2; +} __attribute__ ((packed, aligned(256))); + +/** + * struct slib - storage list information block (SLIB) + * @nsliba: next SLIB address (if any) + * @sla: SL address + * @slsba: SLSB address + * @slibe: SLIB elements + */ +struct slib { + u64 nsliba; + u64 sla; + u64 slsba; + /* private: */ + u8 res[1000]; + /* public: */ + struct slibe slibe[QDIO_MAX_BUFFERS_PER_Q]; +} __attribute__ ((packed, aligned(2048))); + +#define SBAL_EFLAGS_LAST_ENTRY 0x40 +#define SBAL_EFLAGS_CONTIGUOUS 0x20 +#define SBAL_EFLAGS_FIRST_FRAG 0x04 +#define SBAL_EFLAGS_MIDDLE_FRAG 0x08 +#define SBAL_EFLAGS_LAST_FRAG 0x0c +#define SBAL_EFLAGS_MASK 0x6f + +#define SBAL_SFLAGS0_PCI_REQ 0x40 +#define SBAL_SFLAGS0_DATA_CONTINUATION 0x20 + +/* Awesome OpenFCP extensions */ +#define SBAL_SFLAGS0_TYPE_STATUS 0x00 +#define SBAL_SFLAGS0_TYPE_WRITE 0x08 +#define SBAL_SFLAGS0_TYPE_READ 0x10 +#define SBAL_SFLAGS0_TYPE_WRITE_READ 0x18 +#define SBAL_SFLAGS0_MORE_SBALS 0x04 +#define SBAL_SFLAGS0_COMMAND 0x02 +#define SBAL_SFLAGS0_LAST_SBAL 0x00 +#define SBAL_SFLAGS0_ONLY_SBAL SBAL_SFLAGS0_COMMAND +#define SBAL_SFLAGS0_MIDDLE_SBAL SBAL_SFLAGS0_MORE_SBALS +#define SBAL_SFLAGS0_FIRST_SBAL (SBAL_SFLAGS0_MORE_SBALS | SBAL_SFLAGS0_COMMAND) + +/** + * struct qdio_buffer_element - SBAL entry + * @eflags: SBAL entry flags + * @scount: SBAL count + * @sflags: whole SBAL flags + * @length: length + * @addr: address +*/ +struct qdio_buffer_element { + u8 eflags; + /* private: */ + u8 res1; + /* public: */ + u8 scount; + u8 sflags; + u32 length; +#ifdef CONFIG_32BIT + /* private: */ + void *res2; + /* public: */ +#endif + void *addr; +} __attribute__ ((packed, aligned(16))); + +/** + * struct qdio_buffer - storage block address list (SBAL) + * @element: SBAL entries + */ +struct qdio_buffer { + struct qdio_buffer_element element[QDIO_MAX_ELEMENTS_PER_BUFFER]; +} __attribute__ ((packed, aligned(256))); + +/** + * struct sl_element - storage list entry + * @sbal: absolute SBAL address + */ +struct sl_element { +#ifdef CONFIG_32BIT + /* private: */ + unsigned long reserved; + /* public: */ +#endif + unsigned long sbal; +} __attribute__ ((packed)); + +/** + * struct sl - storage list (SL) + * @element: SL entries + */ +struct sl { + struct sl_element element[QDIO_MAX_BUFFERS_PER_Q]; +} __attribute__ ((packed, aligned(1024))); + +/** + * struct slsb - storage list state block (SLSB) + * @val: state per buffer + */ +struct slsb { + u8 val[QDIO_MAX_BUFFERS_PER_Q]; +} __attribute__ ((packed, aligned(256))); + +#define CHSC_AC2_MULTI_BUFFER_AVAILABLE 0x0080 +#define CHSC_AC2_MULTI_BUFFER_ENABLED 0x0040 +#define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010 +#define CHSC_AC2_DATA_DIV_ENABLED 0x0002 + +/** + * struct qdio_outbuf_state - SBAL related asynchronous operation information + * (for communication with upper layer programs) + * (only required for use with completion queues) + * @flags: flags indicating state of buffer + * @aob: pointer to QAOB used for the particular SBAL + * @user: pointer to upper layer program's state information related to SBAL + * (stored in user1 data of QAOB) + */ +struct qdio_outbuf_state { + u8 flags; + struct qaob *aob; + void *user; +}; + +#define QDIO_OUTBUF_STATE_FLAG_NONE 0x00 +#define QDIO_OUTBUF_STATE_FLAG_PENDING 0x01 + +#define CHSC_AC1_INITIATE_INPUTQ 0x80 + + +/* qdio adapter-characteristics-1 flag */ +#define AC1_SIGA_INPUT_NEEDED 0x40 /* process input queues */ +#define AC1_SIGA_OUTPUT_NEEDED 0x20 /* process output queues */ +#define AC1_SIGA_SYNC_NEEDED 0x10 /* ask hypervisor to sync */ +#define AC1_AUTOMATIC_SYNC_ON_THININT 0x08 /* set by hypervisor */ +#define AC1_AUTOMATIC_SYNC_ON_OUT_PCI 0x04 /* set by hypervisor */ +#define AC1_SC_QEBSM_AVAILABLE 0x02 /* available for subchannel */ +#define AC1_SC_QEBSM_ENABLED 0x01 /* enabled for subchannel */ + +#define CHSC_AC2_DATA_DIV_AVAILABLE 0x0010 +#define CHSC_AC2_DATA_DIV_ENABLED 0x0002 + +#define CHSC_AC3_FORMAT2_CQ_AVAILABLE 0x8000 + +struct qdio_ssqd_desc { + u8 flags; + u8:8; + u16 sch; + u8 qfmt; + u8 parm; + u8 qdioac1; + u8 sch_class; + u8 pcnt; + u8 icnt; + u8:8; + u8 ocnt; + u8:8; + u8 mbccnt; + u16 qdioac2; + u64 sch_token; + u8 mro; + u8 mri; + u16 qdioac3; + u16:16; + u8:8; + u8 mmwc; +} __attribute__ ((packed)); + +/* params are: ccw_device, qdio_error, queue_number, + first element processed, number of elements processed, int_parm */ +typedef void qdio_handler_t(struct ccw_device *, unsigned int, int, + int, int, unsigned long); + +/* qdio errors reported to the upper-layer program */ +#define QDIO_ERROR_SIGA_TARGET 0x02 +#define QDIO_ERROR_SIGA_ACCESS_EXCEPTION 0x10 +#define QDIO_ERROR_SIGA_BUSY 0x20 +#define QDIO_ERROR_ACTIVATE_CHECK_CONDITION 0x40 +#define QDIO_ERROR_SLSB_STATE 0x80 + +/* for qdio_cleanup */ +#define QDIO_FLAG_CLEANUP_USING_CLEAR 0x01 +#define QDIO_FLAG_CLEANUP_USING_HALT 0x02 + +/** + * struct qdio_initialize - qdio initalization data + * @cdev: associated ccw device + * @q_format: queue format + * @adapter_name: name for the adapter + * @qib_param_field_format: format for qib_parm_field + * @qib_param_field: pointer to 128 bytes or NULL, if no param field + * @qib_rflags: rflags to set + * @input_slib_elements: pointer to no_input_qs * 128 words of data or NULL + * @output_slib_elements: pointer to no_output_qs * 128 words of data or NULL + * @no_input_qs: number of input queues + * @no_output_qs: number of output queues + * @input_handler: handler to be called for input queues + * @output_handler: handler to be called for output queues + * @queue_start_poll_array: polling handlers (one per input queue or NULL) + * @int_parm: interruption parameter + * @input_sbal_addr_array: address of no_input_qs * 128 pointers + * @output_sbal_addr_array: address of no_output_qs * 128 pointers + * @output_sbal_state_array: no_output_qs * 128 state info (for CQ or NULL) + */ +struct qdio_initialize { + struct ccw_device *cdev; + unsigned char q_format; + unsigned char qdr_ac; + unsigned char adapter_name[8]; + unsigned int qib_param_field_format; + unsigned char *qib_param_field; + unsigned char qib_rflags; + unsigned long *input_slib_elements; + unsigned long *output_slib_elements; + unsigned int no_input_qs; + unsigned int no_output_qs; + qdio_handler_t *input_handler; + qdio_handler_t *output_handler; + void (**queue_start_poll_array) (struct ccw_device *, int, + unsigned long); + int scan_threshold; + unsigned long int_parm; + void **input_sbal_addr_array; + void **output_sbal_addr_array; + struct qdio_outbuf_state *output_sbal_state_array; +}; + +#define QDIO_STATE_INACTIVE 0x00000002 /* after qdio_cleanup */ +#define QDIO_STATE_ESTABLISHED 0x00000004 /* after qdio_establish */ +#define QDIO_STATE_ACTIVE 0x00000008 /* after qdio_activate */ +#define QDIO_STATE_STOPPED 0x00000010 /* after queues went down */ + +#define QDIO_FLAG_SYNC_INPUT 0x01 +#define QDIO_FLAG_SYNC_OUTPUT 0x02 +#define QDIO_FLAG_PCI_OUT 0x10 + +extern int qdio_allocate(struct qdio_initialize *); +extern int qdio_establish(struct qdio_initialize *); +extern int qdio_activate(struct ccw_device *); +extern void qdio_release_aob(struct qaob *); +extern int do_QDIO(struct ccw_device *, unsigned int, int, unsigned int, + unsigned int); +extern int qdio_start_irq(struct ccw_device *, int); +extern int qdio_stop_irq(struct ccw_device *, int); +extern int qdio_get_next_buffers(struct ccw_device *, int, int *, int *); +extern int qdio_shutdown(struct ccw_device *, int); +extern int qdio_free(struct ccw_device *); +extern int qdio_get_ssqd_desc(struct ccw_device *, struct qdio_ssqd_desc *); + +#endif /* __QDIO_H__ */ diff --git a/arch/s390/include/asm/qeth.h b/arch/s390/include/asm/qeth.h new file mode 100644 index 00000000..2c7c898c --- /dev/null +++ b/arch/s390/include/asm/qeth.h @@ -0,0 +1,117 @@ +/* + * include/asm-s390/qeth.h + * + * ioctl definitions for qeth driver + * + * Copyright (C) 2004 IBM Corporation + * + * Author(s): Thomas Spatzier <tspat@de.ibm.com> + * + */ +#ifndef __ASM_S390_QETH_IOCTL_H__ +#define __ASM_S390_QETH_IOCTL_H__ +#include <linux/types.h> +#include <linux/ioctl.h> + +#define SIOC_QETH_ARP_SET_NO_ENTRIES (SIOCDEVPRIVATE) +#define SIOC_QETH_ARP_QUERY_INFO (SIOCDEVPRIVATE + 1) +#define SIOC_QETH_ARP_ADD_ENTRY (SIOCDEVPRIVATE + 2) +#define SIOC_QETH_ARP_REMOVE_ENTRY (SIOCDEVPRIVATE + 3) +#define SIOC_QETH_ARP_FLUSH_CACHE (SIOCDEVPRIVATE + 4) +#define SIOC_QETH_ADP_SET_SNMP_CONTROL (SIOCDEVPRIVATE + 5) +#define SIOC_QETH_GET_CARD_TYPE (SIOCDEVPRIVATE + 6) +#define SIOC_QETH_QUERY_OAT (SIOCDEVPRIVATE + 7) + +struct qeth_arp_cache_entry { + __u8 macaddr[6]; + __u8 reserved1[2]; + __u8 ipaddr[16]; /* for both IPv4 and IPv6 */ + __u8 reserved2[32]; +} __attribute__ ((packed)); + +enum qeth_arp_ipaddrtype { + QETHARP_IP_ADDR_V4 = 1, + QETHARP_IP_ADDR_V6 = 2, +}; +struct qeth_arp_entrytype { + __u8 mac; + __u8 ip; +} __attribute__((packed)); + +#define QETH_QARP_MEDIASPECIFIC_BYTES 32 +#define QETH_QARP_MACADDRTYPE_BYTES 1 +struct qeth_arp_qi_entry7 { + __u8 media_specific[QETH_QARP_MEDIASPECIFIC_BYTES]; + struct qeth_arp_entrytype type; + __u8 macaddr[6]; + __u8 ipaddr[4]; +} __attribute__((packed)); + +struct qeth_arp_qi_entry7_ipv6 { + __u8 media_specific[QETH_QARP_MEDIASPECIFIC_BYTES]; + struct qeth_arp_entrytype type; + __u8 macaddr[6]; + __u8 ipaddr[16]; +} __attribute__((packed)); + +struct qeth_arp_qi_entry7_short { + struct qeth_arp_entrytype type; + __u8 macaddr[6]; + __u8 ipaddr[4]; +} __attribute__((packed)); + +struct qeth_arp_qi_entry7_short_ipv6 { + struct qeth_arp_entrytype type; + __u8 macaddr[6]; + __u8 ipaddr[16]; +} __attribute__((packed)); + +struct qeth_arp_qi_entry5 { + __u8 media_specific[QETH_QARP_MEDIASPECIFIC_BYTES]; + struct qeth_arp_entrytype type; + __u8 ipaddr[4]; +} __attribute__((packed)); + +struct qeth_arp_qi_entry5_ipv6 { + __u8 media_specific[QETH_QARP_MEDIASPECIFIC_BYTES]; + struct qeth_arp_entrytype type; + __u8 ipaddr[16]; +} __attribute__((packed)); + +struct qeth_arp_qi_entry5_short { + struct qeth_arp_entrytype type; + __u8 ipaddr[4]; +} __attribute__((packed)); + +struct qeth_arp_qi_entry5_short_ipv6 { + struct qeth_arp_entrytype type; + __u8 ipaddr[16]; +} __attribute__((packed)); +/* + * can be set by user if no "media specific information" is wanted + * -> saves a lot of space in user space buffer + */ +#define QETH_QARP_STRIP_ENTRIES 0x8000 +#define QETH_QARP_WITH_IPV6 0x4000 +#define QETH_QARP_REQUEST_MASK 0x00ff + +/* data sent to user space as result of query arp ioctl */ +#define QETH_QARP_USER_DATA_SIZE 20000 +#define QETH_QARP_MASK_OFFSET 4 +#define QETH_QARP_ENTRIES_OFFSET 6 +struct qeth_arp_query_user_data { + union { + __u32 data_len; /* set by user space program */ + __u32 no_entries; /* set by kernel */ + } u; + __u16 mask_bits; + char *entries; +} __attribute__((packed)); + +struct qeth_query_oat_data { + __u32 command; + __u32 buffer_len; + __u32 response_len; + __u64 ptr; +}; +#endif /* __ASM_S390_QETH_IOCTL_H__ */ diff --git a/arch/s390/include/asm/reset.h b/arch/s390/include/asm/reset.h new file mode 100644 index 00000000..3d6ad4ad --- /dev/null +++ b/arch/s390/include/asm/reset.h @@ -0,0 +1,21 @@ +/* + * include/asm-s390/reset.h + * + * Copyright IBM Corp. 2006 + * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> + */ + +#ifndef _ASM_S390_RESET_H +#define _ASM_S390_RESET_H + +#include <linux/list.h> + +struct reset_call { + struct list_head list; + void (*fn)(void); +}; + +extern void register_reset_call(struct reset_call *reset); +extern void unregister_reset_call(struct reset_call *reset); +extern void s390_reset_system(void (*func)(void *), void *data); +#endif /* _ASM_S390_RESET_H */ diff --git a/arch/s390/include/asm/resource.h b/arch/s390/include/asm/resource.h new file mode 100644 index 00000000..366c01de --- /dev/null +++ b/arch/s390/include/asm/resource.h @@ -0,0 +1,15 @@ +/* + * include/asm-s390/resource.h + * + * S390 version + * + * Derived from "include/asm-i386/resources.h" + */ + +#ifndef _S390_RESOURCE_H +#define _S390_RESOURCE_H + +#include <asm-generic/resource.h> + +#endif + diff --git a/arch/s390/include/asm/rwsem.h b/arch/s390/include/asm/rwsem.h new file mode 100644 index 00000000..d0eb4653 --- /dev/null +++ b/arch/s390/include/asm/rwsem.h @@ -0,0 +1,323 @@ +#ifndef _S390_RWSEM_H +#define _S390_RWSEM_H + +/* + * include/asm-s390/rwsem.h + * + * S390 version + * Copyright (C) 2002 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Based on asm-alpha/semaphore.h and asm-i386/rwsem.h + */ + +/* + * + * The MSW of the count is the negated number of active writers and waiting + * lockers, and the LSW is the total number of active locks + * + * The lock count is initialized to 0 (no active and no waiting lockers). + * + * When a writer subtracts WRITE_BIAS, it'll get 0xffff0001 for the case of an + * uncontended lock. This can be determined because XADD returns the old value. + * Readers increment by 1 and see a positive value when uncontended, negative + * if there are writers (and maybe) readers waiting (in which case it goes to + * sleep). + * + * The value of WAITING_BIAS supports up to 32766 waiting processes. This can + * be extended to 65534 by manually checking the whole MSW rather than relying + * on the S flag. + * + * The value of ACTIVE_BIAS supports up to 65535 active processes. + * + * This should be totally fair - if anything is waiting, a process that wants a + * lock will go to the back of the queue. When the currently active lock is + * released, if there's a writer at the front of the queue, then that and only + * that will be woken up; if there's a bunch of consequtive readers at the + * front, then they'll all be woken up, but no other readers will be. + */ + +#ifndef _LINUX_RWSEM_H +#error "please don't include asm/rwsem.h directly, use linux/rwsem.h instead" +#endif + +#ifdef __KERNEL__ + +#ifndef __s390x__ +#define RWSEM_UNLOCKED_VALUE 0x00000000 +#define RWSEM_ACTIVE_BIAS 0x00000001 +#define RWSEM_ACTIVE_MASK 0x0000ffff +#define RWSEM_WAITING_BIAS (-0x00010000) +#else /* __s390x__ */ +#define RWSEM_UNLOCKED_VALUE 0x0000000000000000L +#define RWSEM_ACTIVE_BIAS 0x0000000000000001L +#define RWSEM_ACTIVE_MASK 0x00000000ffffffffL +#define RWSEM_WAITING_BIAS (-0x0000000100000000L) +#endif /* __s390x__ */ +#define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS +#define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) + +/* + * lock for reading + */ +static inline void __down_read(struct rw_semaphore *sem) +{ + signed long old, new; + + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: lr %1,%0\n" + " ahi %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: lgr %1,%0\n" + " aghi %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS) + : "cc", "memory"); + if (old < 0) + rwsem_down_read_failed(sem); +} + +/* + * trylock for reading -- returns 1 if successful, 0 if contention + */ +static inline int __down_read_trylock(struct rw_semaphore *sem) +{ + signed long old, new; + + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: ltr %1,%0\n" + " jm 1f\n" + " ahi %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b\n" + "1:" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: ltgr %1,%0\n" + " jm 1f\n" + " aghi %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b\n" + "1:" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "i" (RWSEM_ACTIVE_READ_BIAS) + : "cc", "memory"); + return old >= 0 ? 1 : 0; +} + +/* + * lock for writing + */ +static inline void __down_write_nested(struct rw_semaphore *sem, int subclass) +{ + signed long old, new, tmp; + + tmp = RWSEM_ACTIVE_WRITE_BIAS; + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: lr %1,%0\n" + " a %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: lgr %1,%0\n" + " ag %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "m" (tmp) + : "cc", "memory"); + if (old != 0) + rwsem_down_write_failed(sem); +} + +static inline void __down_write(struct rw_semaphore *sem) +{ + __down_write_nested(sem, 0); +} + +/* + * trylock for writing -- returns 1 if successful, 0 if contention + */ +static inline int __down_write_trylock(struct rw_semaphore *sem) +{ + signed long old; + + asm volatile( +#ifndef __s390x__ + " l %0,%1\n" + "0: ltr %0,%0\n" + " jnz 1f\n" + " cs %0,%3,%1\n" + " jl 0b\n" +#else /* __s390x__ */ + " lg %0,%1\n" + "0: ltgr %0,%0\n" + " jnz 1f\n" + " csg %0,%3,%1\n" + " jl 0b\n" +#endif /* __s390x__ */ + "1:" + : "=&d" (old), "=Q" (sem->count) + : "Q" (sem->count), "d" (RWSEM_ACTIVE_WRITE_BIAS) + : "cc", "memory"); + return (old == RWSEM_UNLOCKED_VALUE) ? 1 : 0; +} + +/* + * unlock after reading + */ +static inline void __up_read(struct rw_semaphore *sem) +{ + signed long old, new; + + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: lr %1,%0\n" + " ahi %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: lgr %1,%0\n" + " aghi %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "i" (-RWSEM_ACTIVE_READ_BIAS) + : "cc", "memory"); + if (new < 0) + if ((new & RWSEM_ACTIVE_MASK) == 0) + rwsem_wake(sem); +} + +/* + * unlock after writing + */ +static inline void __up_write(struct rw_semaphore *sem) +{ + signed long old, new, tmp; + + tmp = -RWSEM_ACTIVE_WRITE_BIAS; + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: lr %1,%0\n" + " a %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: lgr %1,%0\n" + " ag %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "m" (tmp) + : "cc", "memory"); + if (new < 0) + if ((new & RWSEM_ACTIVE_MASK) == 0) + rwsem_wake(sem); +} + +/* + * downgrade write lock to read lock + */ +static inline void __downgrade_write(struct rw_semaphore *sem) +{ + signed long old, new, tmp; + + tmp = -RWSEM_WAITING_BIAS; + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: lr %1,%0\n" + " a %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: lgr %1,%0\n" + " ag %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "m" (tmp) + : "cc", "memory"); + if (new > 1) + rwsem_downgrade_wake(sem); +} + +/* + * implement atomic add functionality + */ +static inline void rwsem_atomic_add(long delta, struct rw_semaphore *sem) +{ + signed long old, new; + + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: lr %1,%0\n" + " ar %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: lgr %1,%0\n" + " agr %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "d" (delta) + : "cc", "memory"); +} + +/* + * implement exchange and add functionality + */ +static inline long rwsem_atomic_update(long delta, struct rw_semaphore *sem) +{ + signed long old, new; + + asm volatile( +#ifndef __s390x__ + " l %0,%2\n" + "0: lr %1,%0\n" + " ar %1,%4\n" + " cs %0,%1,%2\n" + " jl 0b" +#else /* __s390x__ */ + " lg %0,%2\n" + "0: lgr %1,%0\n" + " agr %1,%4\n" + " csg %0,%1,%2\n" + " jl 0b" +#endif /* __s390x__ */ + : "=&d" (old), "=&d" (new), "=Q" (sem->count) + : "Q" (sem->count), "d" (delta) + : "cc", "memory"); + return new; +} + +#endif /* __KERNEL__ */ +#endif /* _S390_RWSEM_H */ diff --git a/arch/s390/include/asm/scatterlist.h b/arch/s390/include/asm/scatterlist.h new file mode 100644 index 00000000..6d45ef6c --- /dev/null +++ b/arch/s390/include/asm/scatterlist.h @@ -0,0 +1,3 @@ +#include <asm-generic/scatterlist.h> + +#define ARCH_HAS_SG_CHAIN diff --git a/arch/s390/include/asm/schid.h b/arch/s390/include/asm/schid.h new file mode 100644 index 00000000..3e4d401b --- /dev/null +++ b/arch/s390/include/asm/schid.h @@ -0,0 +1,34 @@ +#ifndef ASM_SCHID_H +#define ASM_SCHID_H + +#include <linux/types.h> + +struct subchannel_id { + __u32 cssid : 8; + __u32 : 4; + __u32 m : 1; + __u32 ssid : 2; + __u32 one : 1; + __u32 sch_no : 16; +} __attribute__ ((packed, aligned(4))); + +#ifdef __KERNEL__ +#include <linux/string.h> + +/* Helper function for sane state of pre-allocated subchannel_id. */ +static inline void +init_subchannel_id(struct subchannel_id *schid) +{ + memset(schid, 0, sizeof(struct subchannel_id)); + schid->one = 1; +} + +static inline int +schid_equal(struct subchannel_id *schid1, struct subchannel_id *schid2) +{ + return !memcmp(schid1, schid2, sizeof(struct subchannel_id)); +} + +#endif /* __KERNEL__ */ + +#endif /* ASM_SCHID_H */ diff --git a/arch/s390/include/asm/sclp.h b/arch/s390/include/asm/sclp.h new file mode 100644 index 00000000..fed7bee6 --- /dev/null +++ b/arch/s390/include/asm/sclp.h @@ -0,0 +1,58 @@ +/* + * include/asm-s390/sclp.h + * + * Copyright IBM Corp. 2007 + * Author(s): Heiko Carstens <heiko.carstens@de.ibm.com> + */ + +#ifndef _ASM_S390_SCLP_H +#define _ASM_S390_SCLP_H + +#include <linux/types.h> +#include <asm/chpid.h> + +#define SCLP_CHP_INFO_MASK_SIZE 32 + +struct sclp_chp_info { + u8 recognized[SCLP_CHP_INFO_MASK_SIZE]; + u8 standby[SCLP_CHP_INFO_MASK_SIZE]; + u8 configured[SCLP_CHP_INFO_MASK_SIZE]; +}; + +#define LOADPARM_LEN 8 + +struct sclp_ipl_info { + int is_valid; + int has_dump; + char loadparm[LOADPARM_LEN]; +}; + +struct sclp_cpu_entry { + u8 address; + u8 reserved0[13]; + u8 type; + u8 reserved1; +} __attribute__((packed)); + +struct sclp_cpu_info { + unsigned int configured; + unsigned int standby; + unsigned int combined; + int has_cpu_type; + struct sclp_cpu_entry cpu[255]; +}; + +int sclp_get_cpu_info(struct sclp_cpu_info *info); +int sclp_cpu_configure(u8 cpu); +int sclp_cpu_deconfigure(u8 cpu); +void sclp_facilities_detect(void); +unsigned long long sclp_get_rnmax(void); +unsigned long long sclp_get_rzm(void); +int sclp_sdias_blk_count(void); +int sclp_sdias_copy(void *dest, int blk_num, int nr_blks); +int sclp_chp_configure(struct chp_id chpid); +int sclp_chp_deconfigure(struct chp_id chpid); +int sclp_chp_read_info(struct sclp_chp_info *info); +void sclp_get_ipl_info(struct sclp_ipl_info *info); + +#endif /* _ASM_S390_SCLP_H */ diff --git a/arch/s390/include/asm/scsw.h b/arch/s390/include/asm/scsw.h new file mode 100644 index 00000000..de389cb5 --- /dev/null +++ b/arch/s390/include/asm/scsw.h @@ -0,0 +1,956 @@ +/* + * Helper functions for scsw access. + * + * Copyright IBM Corp. 2008,2009 + * Author(s): Peter Oberparleiter <peter.oberparleiter@de.ibm.com> + */ + +#ifndef _ASM_S390_SCSW_H_ +#define _ASM_S390_SCSW_H_ + +#include <linux/types.h> +#include <asm/chsc.h> +#include <asm/cio.h> + +/** + * struct cmd_scsw - command-mode subchannel status word + * @key: subchannel key + * @sctl: suspend control + * @eswf: esw format + * @cc: deferred condition code + * @fmt: format + * @pfch: prefetch + * @isic: initial-status interruption control + * @alcc: address-limit checking control + * @ssi: suppress-suspended interruption + * @zcc: zero condition code + * @ectl: extended control + * @pno: path not operational + * @res: reserved + * @fctl: function control + * @actl: activity control + * @stctl: status control + * @cpa: channel program address + * @dstat: device status + * @cstat: subchannel status + * @count: residual count + */ +struct cmd_scsw { + __u32 key : 4; + __u32 sctl : 1; + __u32 eswf : 1; + __u32 cc : 2; + __u32 fmt : 1; + __u32 pfch : 1; + __u32 isic : 1; + __u32 alcc : 1; + __u32 ssi : 1; + __u32 zcc : 1; + __u32 ectl : 1; + __u32 pno : 1; + __u32 res : 1; + __u32 fctl : 3; + __u32 actl : 7; + __u32 stctl : 5; + __u32 cpa; + __u32 dstat : 8; + __u32 cstat : 8; + __u32 count : 16; +} __attribute__ ((packed)); + +/** + * struct tm_scsw - transport-mode subchannel status word + * @key: subchannel key + * @eswf: esw format + * @cc: deferred condition code + * @fmt: format + * @x: IRB-format control + * @q: interrogate-complete + * @ectl: extended control + * @pno: path not operational + * @fctl: function control + * @actl: activity control + * @stctl: status control + * @tcw: TCW address + * @dstat: device status + * @cstat: subchannel status + * @fcxs: FCX status + * @schxs: subchannel-extended status + */ +struct tm_scsw { + u32 key:4; + u32 :1; + u32 eswf:1; + u32 cc:2; + u32 fmt:3; + u32 x:1; + u32 q:1; + u32 :1; + u32 ectl:1; + u32 pno:1; + u32 :1; + u32 fctl:3; + u32 actl:7; + u32 stctl:5; + u32 tcw; + u32 dstat:8; + u32 cstat:8; + u32 fcxs:8; + u32 schxs:8; +} __attribute__ ((packed)); + +/** + * union scsw - subchannel status word + * @cmd: command-mode SCSW + * @tm: transport-mode SCSW + */ +union scsw { + struct cmd_scsw cmd; + struct tm_scsw tm; +} __attribute__ ((packed)); + +#define SCSW_FCTL_CLEAR_FUNC 0x1 +#define SCSW_FCTL_HALT_FUNC 0x2 +#define SCSW_FCTL_START_FUNC 0x4 + +#define SCSW_ACTL_SUSPENDED 0x1 +#define SCSW_ACTL_DEVACT 0x2 +#define SCSW_ACTL_SCHACT 0x4 +#define SCSW_ACTL_CLEAR_PEND 0x8 +#define SCSW_ACTL_HALT_PEND 0x10 +#define SCSW_ACTL_START_PEND 0x20 +#define SCSW_ACTL_RESUME_PEND 0x40 + +#define SCSW_STCTL_STATUS_PEND 0x1 +#define SCSW_STCTL_SEC_STATUS 0x2 +#define SCSW_STCTL_PRIM_STATUS 0x4 +#define SCSW_STCTL_INTER_STATUS 0x8 +#define SCSW_STCTL_ALERT_STATUS 0x10 + +#define DEV_STAT_ATTENTION 0x80 +#define DEV_STAT_STAT_MOD 0x40 +#define DEV_STAT_CU_END 0x20 +#define DEV_STAT_BUSY 0x10 +#define DEV_STAT_CHN_END 0x08 +#define DEV_STAT_DEV_END 0x04 +#define DEV_STAT_UNIT_CHECK 0x02 +#define DEV_STAT_UNIT_EXCEP 0x01 + +#define SCHN_STAT_PCI 0x80 +#define SCHN_STAT_INCORR_LEN 0x40 +#define SCHN_STAT_PROG_CHECK 0x20 +#define SCHN_STAT_PROT_CHECK 0x10 +#define SCHN_STAT_CHN_DATA_CHK 0x08 +#define SCHN_STAT_CHN_CTRL_CHK 0x04 +#define SCHN_STAT_INTF_CTRL_CHK 0x02 +#define SCHN_STAT_CHAIN_CHECK 0x01 + +/* + * architectured values for first sense byte + */ +#define SNS0_CMD_REJECT 0x80 +#define SNS_CMD_REJECT SNS0_CMD_REJEC +#define SNS0_INTERVENTION_REQ 0x40 +#define SNS0_BUS_OUT_CHECK 0x20 +#define SNS0_EQUIPMENT_CHECK 0x10 +#define SNS0_DATA_CHECK 0x08 +#define SNS0_OVERRUN 0x04 +#define SNS0_INCOMPL_DOMAIN 0x01 + +/* + * architectured values for second sense byte + */ +#define SNS1_PERM_ERR 0x80 +#define SNS1_INV_TRACK_FORMAT 0x40 +#define SNS1_EOC 0x20 +#define SNS1_MESSAGE_TO_OPER 0x10 +#define SNS1_NO_REC_FOUND 0x08 +#define SNS1_FILE_PROTECTED 0x04 +#define SNS1_WRITE_INHIBITED 0x02 +#define SNS1_INPRECISE_END 0x01 + +/* + * architectured values for third sense byte + */ +#define SNS2_REQ_INH_WRITE 0x80 +#define SNS2_CORRECTABLE 0x40 +#define SNS2_FIRST_LOG_ERR 0x20 +#define SNS2_ENV_DATA_PRESENT 0x10 +#define SNS2_INPRECISE_END 0x04 + +/** + * scsw_is_tm - check for transport mode scsw + * @scsw: pointer to scsw + * + * Return non-zero if the specified scsw is a transport mode scsw, zero + * otherwise. + */ +static inline int scsw_is_tm(union scsw *scsw) +{ + return css_general_characteristics.fcx && (scsw->tm.x == 1); +} + +/** + * scsw_key - return scsw key field + * @scsw: pointer to scsw + * + * Return the value of the key field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_key(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.key; + else + return scsw->cmd.key; +} + +/** + * scsw_eswf - return scsw eswf field + * @scsw: pointer to scsw + * + * Return the value of the eswf field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_eswf(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.eswf; + else + return scsw->cmd.eswf; +} + +/** + * scsw_cc - return scsw cc field + * @scsw: pointer to scsw + * + * Return the value of the cc field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_cc(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.cc; + else + return scsw->cmd.cc; +} + +/** + * scsw_ectl - return scsw ectl field + * @scsw: pointer to scsw + * + * Return the value of the ectl field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_ectl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.ectl; + else + return scsw->cmd.ectl; +} + +/** + * scsw_pno - return scsw pno field + * @scsw: pointer to scsw + * + * Return the value of the pno field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_pno(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.pno; + else + return scsw->cmd.pno; +} + +/** + * scsw_fctl - return scsw fctl field + * @scsw: pointer to scsw + * + * Return the value of the fctl field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_fctl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.fctl; + else + return scsw->cmd.fctl; +} + +/** + * scsw_actl - return scsw actl field + * @scsw: pointer to scsw + * + * Return the value of the actl field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_actl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.actl; + else + return scsw->cmd.actl; +} + +/** + * scsw_stctl - return scsw stctl field + * @scsw: pointer to scsw + * + * Return the value of the stctl field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_stctl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.stctl; + else + return scsw->cmd.stctl; +} + +/** + * scsw_dstat - return scsw dstat field + * @scsw: pointer to scsw + * + * Return the value of the dstat field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_dstat(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.dstat; + else + return scsw->cmd.dstat; +} + +/** + * scsw_cstat - return scsw cstat field + * @scsw: pointer to scsw + * + * Return the value of the cstat field of the specified scsw, regardless of + * whether it is a transport mode or command mode scsw. + */ +static inline u32 scsw_cstat(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw->tm.cstat; + else + return scsw->cmd.cstat; +} + +/** + * scsw_cmd_is_valid_key - check key field validity + * @scsw: pointer to scsw + * + * Return non-zero if the key field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_key(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_cmd_is_valid_sctl - check fctl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the fctl field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_sctl(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_cmd_is_valid_eswf - check eswf field validity + * @scsw: pointer to scsw + * + * Return non-zero if the eswf field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_eswf(union scsw *scsw) +{ + return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); +} + +/** + * scsw_cmd_is_valid_cc - check cc field validity + * @scsw: pointer to scsw + * + * Return non-zero if the cc field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_cc(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && + (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND); +} + +/** + * scsw_cmd_is_valid_fmt - check fmt field validity + * @scsw: pointer to scsw + * + * Return non-zero if the fmt field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_fmt(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_cmd_is_valid_pfch - check pfch field validity + * @scsw: pointer to scsw + * + * Return non-zero if the pfch field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_pfch(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_cmd_is_valid_isic - check isic field validity + * @scsw: pointer to scsw + * + * Return non-zero if the isic field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_isic(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_cmd_is_valid_alcc - check alcc field validity + * @scsw: pointer to scsw + * + * Return non-zero if the alcc field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_alcc(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_cmd_is_valid_ssi - check ssi field validity + * @scsw: pointer to scsw + * + * Return non-zero if the ssi field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_ssi(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_cmd_is_valid_zcc - check zcc field validity + * @scsw: pointer to scsw + * + * Return non-zero if the zcc field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_zcc(union scsw *scsw) +{ + return (scsw->cmd.fctl & SCSW_FCTL_START_FUNC) && + (scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS); +} + +/** + * scsw_cmd_is_valid_ectl - check ectl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the ectl field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_ectl(union scsw *scsw) +{ + return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && + !(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) && + (scsw->cmd.stctl & SCSW_STCTL_ALERT_STATUS); +} + +/** + * scsw_cmd_is_valid_pno - check pno field validity + * @scsw: pointer to scsw + * + * Return non-zero if the pno field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_pno(union scsw *scsw) +{ + return (scsw->cmd.fctl != 0) && + (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && + (!(scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) || + ((scsw->cmd.stctl & SCSW_STCTL_INTER_STATUS) && + (scsw->cmd.actl & SCSW_ACTL_SUSPENDED))); +} + +/** + * scsw_cmd_is_valid_fctl - check fctl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the fctl field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_fctl(union scsw *scsw) +{ + /* Only valid if pmcw.dnv == 1*/ + return 1; +} + +/** + * scsw_cmd_is_valid_actl - check actl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the actl field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_actl(union scsw *scsw) +{ + /* Only valid if pmcw.dnv == 1*/ + return 1; +} + +/** + * scsw_cmd_is_valid_stctl - check stctl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the stctl field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_stctl(union scsw *scsw) +{ + /* Only valid if pmcw.dnv == 1*/ + return 1; +} + +/** + * scsw_cmd_is_valid_dstat - check dstat field validity + * @scsw: pointer to scsw + * + * Return non-zero if the dstat field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_dstat(union scsw *scsw) +{ + return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && + (scsw->cmd.cc != 3); +} + +/** + * scsw_cmd_is_valid_cstat - check cstat field validity + * @scsw: pointer to scsw + * + * Return non-zero if the cstat field of the specified command mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_cmd_is_valid_cstat(union scsw *scsw) +{ + return (scsw->cmd.stctl & SCSW_STCTL_STATUS_PEND) && + (scsw->cmd.cc != 3); +} + +/** + * scsw_tm_is_valid_key - check key field validity + * @scsw: pointer to scsw + * + * Return non-zero if the key field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_key(union scsw *scsw) +{ + return (scsw->tm.fctl & SCSW_FCTL_START_FUNC); +} + +/** + * scsw_tm_is_valid_eswf - check eswf field validity + * @scsw: pointer to scsw + * + * Return non-zero if the eswf field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_eswf(union scsw *scsw) +{ + return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); +} + +/** + * scsw_tm_is_valid_cc - check cc field validity + * @scsw: pointer to scsw + * + * Return non-zero if the cc field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_cc(union scsw *scsw) +{ + return (scsw->tm.fctl & SCSW_FCTL_START_FUNC) && + (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND); +} + +/** + * scsw_tm_is_valid_fmt - check fmt field validity + * @scsw: pointer to scsw + * + * Return non-zero if the fmt field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_fmt(union scsw *scsw) +{ + return 1; +} + +/** + * scsw_tm_is_valid_x - check x field validity + * @scsw: pointer to scsw + * + * Return non-zero if the x field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_x(union scsw *scsw) +{ + return 1; +} + +/** + * scsw_tm_is_valid_q - check q field validity + * @scsw: pointer to scsw + * + * Return non-zero if the q field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_q(union scsw *scsw) +{ + return 1; +} + +/** + * scsw_tm_is_valid_ectl - check ectl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the ectl field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_ectl(union scsw *scsw) +{ + return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && + !(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && + (scsw->tm.stctl & SCSW_STCTL_ALERT_STATUS); +} + +/** + * scsw_tm_is_valid_pno - check pno field validity + * @scsw: pointer to scsw + * + * Return non-zero if the pno field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_pno(union scsw *scsw) +{ + return (scsw->tm.fctl != 0) && + (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && + (!(scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) || + ((scsw->tm.stctl & SCSW_STCTL_INTER_STATUS) && + (scsw->tm.actl & SCSW_ACTL_SUSPENDED))); +} + +/** + * scsw_tm_is_valid_fctl - check fctl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the fctl field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_fctl(union scsw *scsw) +{ + /* Only valid if pmcw.dnv == 1*/ + return 1; +} + +/** + * scsw_tm_is_valid_actl - check actl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the actl field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_actl(union scsw *scsw) +{ + /* Only valid if pmcw.dnv == 1*/ + return 1; +} + +/** + * scsw_tm_is_valid_stctl - check stctl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the stctl field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_stctl(union scsw *scsw) +{ + /* Only valid if pmcw.dnv == 1*/ + return 1; +} + +/** + * scsw_tm_is_valid_dstat - check dstat field validity + * @scsw: pointer to scsw + * + * Return non-zero if the dstat field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_dstat(union scsw *scsw) +{ + return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && + (scsw->tm.cc != 3); +} + +/** + * scsw_tm_is_valid_cstat - check cstat field validity + * @scsw: pointer to scsw + * + * Return non-zero if the cstat field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_cstat(union scsw *scsw) +{ + return (scsw->tm.stctl & SCSW_STCTL_STATUS_PEND) && + (scsw->tm.cc != 3); +} + +/** + * scsw_tm_is_valid_fcxs - check fcxs field validity + * @scsw: pointer to scsw + * + * Return non-zero if the fcxs field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_fcxs(union scsw *scsw) +{ + return 1; +} + +/** + * scsw_tm_is_valid_schxs - check schxs field validity + * @scsw: pointer to scsw + * + * Return non-zero if the schxs field of the specified transport mode scsw is + * valid, zero otherwise. + */ +static inline int scsw_tm_is_valid_schxs(union scsw *scsw) +{ + return (scsw->tm.cstat & (SCHN_STAT_PROG_CHECK | + SCHN_STAT_INTF_CTRL_CHK | + SCHN_STAT_PROT_CHECK | + SCHN_STAT_CHN_DATA_CHK)); +} + +/** + * scsw_is_valid_actl - check actl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the actl field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_actl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_actl(scsw); + else + return scsw_cmd_is_valid_actl(scsw); +} + +/** + * scsw_is_valid_cc - check cc field validity + * @scsw: pointer to scsw + * + * Return non-zero if the cc field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_cc(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_cc(scsw); + else + return scsw_cmd_is_valid_cc(scsw); +} + +/** + * scsw_is_valid_cstat - check cstat field validity + * @scsw: pointer to scsw + * + * Return non-zero if the cstat field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_cstat(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_cstat(scsw); + else + return scsw_cmd_is_valid_cstat(scsw); +} + +/** + * scsw_is_valid_dstat - check dstat field validity + * @scsw: pointer to scsw + * + * Return non-zero if the dstat field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_dstat(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_dstat(scsw); + else + return scsw_cmd_is_valid_dstat(scsw); +} + +/** + * scsw_is_valid_ectl - check ectl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the ectl field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_ectl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_ectl(scsw); + else + return scsw_cmd_is_valid_ectl(scsw); +} + +/** + * scsw_is_valid_eswf - check eswf field validity + * @scsw: pointer to scsw + * + * Return non-zero if the eswf field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_eswf(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_eswf(scsw); + else + return scsw_cmd_is_valid_eswf(scsw); +} + +/** + * scsw_is_valid_fctl - check fctl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the fctl field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_fctl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_fctl(scsw); + else + return scsw_cmd_is_valid_fctl(scsw); +} + +/** + * scsw_is_valid_key - check key field validity + * @scsw: pointer to scsw + * + * Return non-zero if the key field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_key(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_key(scsw); + else + return scsw_cmd_is_valid_key(scsw); +} + +/** + * scsw_is_valid_pno - check pno field validity + * @scsw: pointer to scsw + * + * Return non-zero if the pno field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_pno(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_pno(scsw); + else + return scsw_cmd_is_valid_pno(scsw); +} + +/** + * scsw_is_valid_stctl - check stctl field validity + * @scsw: pointer to scsw + * + * Return non-zero if the stctl field of the specified scsw is valid, + * regardless of whether it is a transport mode or command mode scsw. + * Return zero if the field does not contain a valid value. + */ +static inline int scsw_is_valid_stctl(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_valid_stctl(scsw); + else + return scsw_cmd_is_valid_stctl(scsw); +} + +/** + * scsw_cmd_is_solicited - check for solicited scsw + * @scsw: pointer to scsw + * + * Return non-zero if the command mode scsw indicates that the associated + * status condition is solicited, zero if it is unsolicited. + */ +static inline int scsw_cmd_is_solicited(union scsw *scsw) +{ + return (scsw->cmd.cc != 0) || (scsw->cmd.stctl != + (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); +} + +/** + * scsw_tm_is_solicited - check for solicited scsw + * @scsw: pointer to scsw + * + * Return non-zero if the transport mode scsw indicates that the associated + * status condition is solicited, zero if it is unsolicited. + */ +static inline int scsw_tm_is_solicited(union scsw *scsw) +{ + return (scsw->tm.cc != 0) || (scsw->tm.stctl != + (SCSW_STCTL_STATUS_PEND | SCSW_STCTL_ALERT_STATUS)); +} + +/** + * scsw_is_solicited - check for solicited scsw + * @scsw: pointer to scsw + * + * Return non-zero if the transport or command mode scsw indicates that the + * associated status condition is solicited, zero if it is unsolicited. + */ +static inline int scsw_is_solicited(union scsw *scsw) +{ + if (scsw_is_tm(scsw)) + return scsw_tm_is_solicited(scsw); + else + return scsw_cmd_is_solicited(scsw); +} + +#endif /* _ASM_S390_SCSW_H_ */ diff --git a/arch/s390/include/asm/seccomp.h b/arch/s390/include/asm/seccomp.h new file mode 100644 index 00000000..781a9cf9 --- /dev/null +++ b/arch/s390/include/asm/seccomp.h @@ -0,0 +1,16 @@ +#ifndef _ASM_S390_SECCOMP_H +#define _ASM_S390_SECCOMP_H + +#include <linux/unistd.h> + +#define __NR_seccomp_read __NR_read +#define __NR_seccomp_write __NR_write +#define __NR_seccomp_exit __NR_exit +#define __NR_seccomp_sigreturn __NR_sigreturn + +#define __NR_seccomp_read_32 __NR_read +#define __NR_seccomp_write_32 __NR_write +#define __NR_seccomp_exit_32 __NR_exit +#define __NR_seccomp_sigreturn_32 __NR_sigreturn + +#endif /* _ASM_S390_SECCOMP_H */ diff --git a/arch/s390/include/asm/sections.h b/arch/s390/include/asm/sections.h new file mode 100644 index 00000000..fbd9116e --- /dev/null +++ b/arch/s390/include/asm/sections.h @@ -0,0 +1,8 @@ +#ifndef _S390_SECTIONS_H +#define _S390_SECTIONS_H + +#include <asm-generic/sections.h> + +extern char _eshared[], _ehead[]; + +#endif diff --git a/arch/s390/include/asm/segment.h b/arch/s390/include/asm/segment.h new file mode 100644 index 00000000..8bfce347 --- /dev/null +++ b/arch/s390/include/asm/segment.h @@ -0,0 +1,4 @@ +#ifndef _ASM_SEGMENT_H +#define _ASM_SEGMENT_H + +#endif diff --git a/arch/s390/include/asm/sembuf.h b/arch/s390/include/asm/sembuf.h new file mode 100644 index 00000000..32626b0c --- /dev/null +++ b/arch/s390/include/asm/sembuf.h @@ -0,0 +1,29 @@ +#ifndef _S390_SEMBUF_H +#define _S390_SEMBUF_H + +/* + * The semid64_ds structure for S/390 architecture. + * Note extra padding because this structure is passed back and forth + * between kernel and user space. + * + * Pad space is left for: + * - 64-bit time_t to solve y2038 problem (for !__s390x__) + * - 2 miscellaneous 32-bit values + */ + +struct semid64_ds { + struct ipc64_perm sem_perm; /* permissions .. see ipc.h */ + __kernel_time_t sem_otime; /* last semop time */ +#ifndef __s390x__ + unsigned long __unused1; +#endif /* ! __s390x__ */ + __kernel_time_t sem_ctime; /* last change time */ +#ifndef __s390x__ + unsigned long __unused2; +#endif /* ! __s390x__ */ + unsigned long sem_nsems; /* no. of semaphores in array */ + unsigned long __unused3; + unsigned long __unused4; +}; + +#endif /* _S390_SEMBUF_H */ diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h new file mode 100644 index 00000000..b21e46e5 --- /dev/null +++ b/arch/s390/include/asm/setup.h @@ -0,0 +1,176 @@ +/* + * include/asm-s390/setup.h + * + * S390 version + * Copyright IBM Corp. 1999,2010 + */ + +#ifndef _ASM_S390_SETUP_H +#define _ASM_S390_SETUP_H + +#define COMMAND_LINE_SIZE 4096 + +#define ARCH_COMMAND_LINE_SIZE 896 + +#ifdef __KERNEL__ + +#define PARMAREA 0x10400 +#define MEMORY_CHUNKS 256 + +#ifndef __ASSEMBLY__ + +#include <asm/lowcore.h> +#include <asm/types.h> + +#ifndef __s390x__ +#define IPL_DEVICE (*(unsigned long *) (0x10404)) +#define INITRD_START (*(unsigned long *) (0x1040C)) +#define INITRD_SIZE (*(unsigned long *) (0x10414)) +#define OLDMEM_BASE (*(unsigned long *) (0x1041C)) +#define OLDMEM_SIZE (*(unsigned long *) (0x10424)) +#else /* __s390x__ */ +#define IPL_DEVICE (*(unsigned long *) (0x10400)) +#define INITRD_START (*(unsigned long *) (0x10408)) +#define INITRD_SIZE (*(unsigned long *) (0x10410)) +#define OLDMEM_BASE (*(unsigned long *) (0x10418)) +#define OLDMEM_SIZE (*(unsigned long *) (0x10420)) +#endif /* __s390x__ */ +#define COMMAND_LINE ((char *) (0x10480)) + +#define CHUNK_READ_WRITE 0 +#define CHUNK_READ_ONLY 1 +#define CHUNK_OLDMEM 4 +#define CHUNK_CRASHK 5 + +struct mem_chunk { + unsigned long addr; + unsigned long size; + int type; +}; + +extern struct mem_chunk memory_chunk[]; +extern unsigned long real_memory_size; +extern int memory_end_set; +extern unsigned long memory_end; + +void detect_memory_layout(struct mem_chunk chunk[]); +void create_mem_hole(struct mem_chunk memory_chunk[], unsigned long addr, + unsigned long size, int type); + +#define PRIMARY_SPACE_MODE 0 +#define ACCESS_REGISTER_MODE 1 +#define SECONDARY_SPACE_MODE 2 +#define HOME_SPACE_MODE 3 + +extern unsigned int user_mode; + +/* + * Machine features detected in head.S + */ + +#define MACHINE_FLAG_VM (1UL << 0) +#define MACHINE_FLAG_IEEE (1UL << 1) +#define MACHINE_FLAG_CSP (1UL << 3) +#define MACHINE_FLAG_MVPG (1UL << 4) +#define MACHINE_FLAG_DIAG44 (1UL << 5) +#define MACHINE_FLAG_IDTE (1UL << 6) +#define MACHINE_FLAG_DIAG9C (1UL << 7) +#define MACHINE_FLAG_MVCOS (1UL << 8) +#define MACHINE_FLAG_KVM (1UL << 9) +#define MACHINE_FLAG_HPAGE (1UL << 10) +#define MACHINE_FLAG_PFMF (1UL << 11) +#define MACHINE_FLAG_LPAR (1UL << 12) +#define MACHINE_FLAG_SPP (1UL << 13) +#define MACHINE_FLAG_TOPOLOGY (1UL << 14) +#define MACHINE_FLAG_STCKF (1UL << 15) + +#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM) +#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM) +#define MACHINE_IS_LPAR (S390_lowcore.machine_flags & MACHINE_FLAG_LPAR) + +#define MACHINE_HAS_DIAG9C (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C) + +#ifndef __s390x__ +#define MACHINE_HAS_IEEE (S390_lowcore.machine_flags & MACHINE_FLAG_IEEE) +#define MACHINE_HAS_CSP (S390_lowcore.machine_flags & MACHINE_FLAG_CSP) +#define MACHINE_HAS_IDTE (0) +#define MACHINE_HAS_DIAG44 (1) +#define MACHINE_HAS_MVPG (S390_lowcore.machine_flags & MACHINE_FLAG_MVPG) +#define MACHINE_HAS_MVCOS (0) +#define MACHINE_HAS_HPAGE (0) +#define MACHINE_HAS_PFMF (0) +#define MACHINE_HAS_SPP (0) +#define MACHINE_HAS_TOPOLOGY (0) +#define MACHINE_HAS_STCKF (0) +#else /* __s390x__ */ +#define MACHINE_HAS_IEEE (1) +#define MACHINE_HAS_CSP (1) +#define MACHINE_HAS_IDTE (S390_lowcore.machine_flags & MACHINE_FLAG_IDTE) +#define MACHINE_HAS_DIAG44 (S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44) +#define MACHINE_HAS_MVPG (1) +#define MACHINE_HAS_MVCOS (S390_lowcore.machine_flags & MACHINE_FLAG_MVCOS) +#define MACHINE_HAS_HPAGE (S390_lowcore.machine_flags & MACHINE_FLAG_HPAGE) +#define MACHINE_HAS_PFMF (S390_lowcore.machine_flags & MACHINE_FLAG_PFMF) +#define MACHINE_HAS_SPP (S390_lowcore.machine_flags & MACHINE_FLAG_SPP) +#define MACHINE_HAS_TOPOLOGY (S390_lowcore.machine_flags & MACHINE_FLAG_TOPOLOGY) +#define MACHINE_HAS_STCKF (S390_lowcore.machine_flags & MACHINE_FLAG_STCKF) +#endif /* __s390x__ */ + +#define ZFCPDUMP_HSA_SIZE (32UL<<20) +#define ZFCPDUMP_HSA_SIZE_MAX (64UL<<20) + +/* + * Console mode. Override with conmode= + */ +extern unsigned int console_mode; +extern unsigned int console_devno; +extern unsigned int console_irq; + +extern char vmhalt_cmd[]; +extern char vmpoff_cmd[]; + +#define CONSOLE_IS_UNDEFINED (console_mode == 0) +#define CONSOLE_IS_SCLP (console_mode == 1) +#define CONSOLE_IS_3215 (console_mode == 2) +#define CONSOLE_IS_3270 (console_mode == 3) +#define SET_CONSOLE_SCLP do { console_mode = 1; } while (0) +#define SET_CONSOLE_3215 do { console_mode = 2; } while (0) +#define SET_CONSOLE_3270 do { console_mode = 3; } while (0) + +#define NSS_NAME_SIZE 8 +extern char kernel_nss_name[]; + +#ifdef CONFIG_PFAULT +extern int pfault_init(void); +extern void pfault_fini(void); +#else /* CONFIG_PFAULT */ +#define pfault_init() ({-1;}) +#define pfault_fini() do { } while (0) +#endif /* CONFIG_PFAULT */ + +extern void cmma_init(void); + +extern void (*_machine_restart)(char *command); +extern void (*_machine_halt)(void); +extern void (*_machine_power_off)(void); + +#else /* __ASSEMBLY__ */ + +#ifndef __s390x__ +#define IPL_DEVICE 0x10404 +#define INITRD_START 0x1040C +#define INITRD_SIZE 0x10414 +#define OLDMEM_BASE 0x1041C +#define OLDMEM_SIZE 0x10424 +#else /* __s390x__ */ +#define IPL_DEVICE 0x10400 +#define INITRD_START 0x10408 +#define INITRD_SIZE 0x10410 +#define OLDMEM_BASE 0x10418 +#define OLDMEM_SIZE 0x10420 +#endif /* __s390x__ */ +#define COMMAND_LINE 0x10480 + +#endif /* __ASSEMBLY__ */ +#endif /* __KERNEL__ */ +#endif /* _ASM_S390_SETUP_H */ diff --git a/arch/s390/include/asm/sfp-machine.h b/arch/s390/include/asm/sfp-machine.h new file mode 100644 index 00000000..4e16aede --- /dev/null +++ b/arch/s390/include/asm/sfp-machine.h @@ -0,0 +1,142 @@ +/* Machine-dependent software floating-point definitions. + S/390 kernel version. + Copyright (C) 1997,1998,1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Richard Henderson (rth@cygnus.com), + Jakub Jelinek (jj@ultra.linux.cz), + David S. Miller (davem@redhat.com) and + Peter Maydell (pmaydell@chiark.greenend.org.uk). + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public License as + published by the Free Software Foundation; either version 2 of the + License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If + not, write to the Free Software Foundation, Inc., + 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ + +#ifndef _SFP_MACHINE_H +#define _SFP_MACHINE_H + + +#define _FP_W_TYPE_SIZE 32 +#define _FP_W_TYPE unsigned int +#define _FP_WS_TYPE signed int +#define _FP_I_TYPE int + +#define _FP_MUL_MEAT_S(R,X,Y) \ + _FP_MUL_MEAT_1_wide(_FP_WFRACBITS_S,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_D(R,X,Y) \ + _FP_MUL_MEAT_2_wide(_FP_WFRACBITS_D,R,X,Y,umul_ppmm) +#define _FP_MUL_MEAT_Q(R,X,Y) \ + _FP_MUL_MEAT_4_wide(_FP_WFRACBITS_Q,R,X,Y,umul_ppmm) + +#define _FP_DIV_MEAT_S(R,X,Y) _FP_DIV_MEAT_1_udiv(S,R,X,Y) +#define _FP_DIV_MEAT_D(R,X,Y) _FP_DIV_MEAT_2_udiv(D,R,X,Y) +#define _FP_DIV_MEAT_Q(R,X,Y) _FP_DIV_MEAT_4_udiv(Q,R,X,Y) + +#define _FP_NANFRAC_S ((_FP_QNANBIT_S << 1) - 1) +#define _FP_NANFRAC_D ((_FP_QNANBIT_D << 1) - 1), -1 +#define _FP_NANFRAC_Q ((_FP_QNANBIT_Q << 1) - 1), -1, -1, -1 +#define _FP_NANSIGN_S 0 +#define _FP_NANSIGN_D 0 +#define _FP_NANSIGN_Q 0 + +#define _FP_KEEPNANFRACP 1 + +/* + * If one NaN is signaling and the other is not, + * we choose that one, otherwise we choose X. + */ +#define _FP_CHOOSENAN(fs, wc, R, X, Y, OP) \ + do { \ + if ((_FP_FRAC_HIGH_RAW_##fs(X) & _FP_QNANBIT_##fs) \ + && !(_FP_FRAC_HIGH_RAW_##fs(Y) & _FP_QNANBIT_##fs)) \ + { \ + R##_s = Y##_s; \ + _FP_FRAC_COPY_##wc(R,Y); \ + } \ + else \ + { \ + R##_s = X##_s; \ + _FP_FRAC_COPY_##wc(R,X); \ + } \ + R##_c = FP_CLS_NAN; \ + } while (0) + +/* Some assembly to speed things up. */ +#define __FP_FRAC_ADD_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({ \ + unsigned int __r2 = (x2) + (y2); \ + unsigned int __r1 = (x1); \ + unsigned int __r0 = (x0); \ + asm volatile( \ + " alr %2,%3\n" \ + " brc 12,0f\n" \ + " lhi 0,1\n" \ + " alr %1,0\n" \ + " brc 12,0f\n" \ + " alr %0,0\n" \ + "0:" \ + : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0) \ + : "d" (y0), "i" (1) : "cc", "0" ); \ + asm volatile( \ + " alr %1,%2\n" \ + " brc 12,0f\n" \ + " ahi %0,1\n" \ + "0:" \ + : "+&d" (__r2), "+&d" (__r1) \ + : "d" (y1) : "cc"); \ + (r2) = __r2; \ + (r1) = __r1; \ + (r0) = __r0; \ +}) + +#define __FP_FRAC_SUB_3(r2,r1,r0,x2,x1,x0,y2,y1,y0) ({ \ + unsigned int __r2 = (x2) - (y2); \ + unsigned int __r1 = (x1); \ + unsigned int __r0 = (x0); \ + asm volatile( \ + " slr %2,%3\n" \ + " brc 3,0f\n" \ + " lhi 0,1\n" \ + " slr %1,0\n" \ + " brc 3,0f\n" \ + " slr %0,0\n" \ + "0:" \ + : "+&d" (__r2), "+&d" (__r1), "+&d" (__r0) \ + : "d" (y0) : "cc", "0"); \ + asm volatile( \ + " slr %1,%2\n" \ + " brc 3,0f\n" \ + " ahi %0,-1\n" \ + "0:" \ + : "+&d" (__r2), "+&d" (__r1) \ + : "d" (y1) : "cc"); \ + (r2) = __r2; \ + (r1) = __r1; \ + (r0) = __r0; \ +}) + +#define __FP_FRAC_DEC_3(x2,x1,x0,y2,y1,y0) __FP_FRAC_SUB_3(x2,x1,x0,x2,x1,x0,y2,y1,y0) + +/* Obtain the current rounding mode. */ +#define FP_ROUNDMODE mode + +/* Exception flags. */ +#define FP_EX_INVALID 0x800000 +#define FP_EX_DIVZERO 0x400000 +#define FP_EX_OVERFLOW 0x200000 +#define FP_EX_UNDERFLOW 0x100000 +#define FP_EX_INEXACT 0x080000 + +/* We write the results always */ +#define FP_INHIBIT_RESULTS 0 + +#endif diff --git a/arch/s390/include/asm/sfp-util.h b/arch/s390/include/asm/sfp-util.h new file mode 100644 index 00000000..ca3f8814 --- /dev/null +++ b/arch/s390/include/asm/sfp-util.h @@ -0,0 +1,77 @@ +#include <linux/kernel.h> +#include <linux/sched.h> +#include <linux/types.h> +#include <asm/byteorder.h> + +#define add_ssaaaa(sh, sl, ah, al, bh, bl) ({ \ + unsigned int __sh = (ah); \ + unsigned int __sl = (al); \ + asm volatile( \ + " alr %1,%3\n" \ + " brc 12,0f\n" \ + " ahi %0,1\n" \ + "0: alr %0,%2" \ + : "+&d" (__sh), "+d" (__sl) \ + : "d" (bh), "d" (bl) : "cc"); \ + (sh) = __sh; \ + (sl) = __sl; \ +}) + +#define sub_ddmmss(sh, sl, ah, al, bh, bl) ({ \ + unsigned int __sh = (ah); \ + unsigned int __sl = (al); \ + asm volatile( \ + " slr %1,%3\n" \ + " brc 3,0f\n" \ + " ahi %0,-1\n" \ + "0: slr %0,%2" \ + : "+&d" (__sh), "+d" (__sl) \ + : "d" (bh), "d" (bl) : "cc"); \ + (sh) = __sh; \ + (sl) = __sl; \ +}) + +/* a umul b = a mul b + (a>=2<<31) ? b<<32:0 + (b>=2<<31) ? a<<32:0 */ +#define umul_ppmm(wh, wl, u, v) ({ \ + unsigned int __wh = u; \ + unsigned int __wl = v; \ + asm volatile( \ + " ltr 1,%0\n" \ + " mr 0,%1\n" \ + " jnm 0f\n" \ + " alr 0,%1\n" \ + "0: ltr %1,%1\n" \ + " jnm 1f\n" \ + " alr 0,%0\n" \ + "1: lr %0,0\n" \ + " lr %1,1\n" \ + : "+d" (__wh), "+d" (__wl) \ + : : "0", "1", "cc"); \ + wh = __wh; \ + wl = __wl; \ +}) + +#ifdef __s390x__ +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { unsigned long __n; \ + unsigned int __r, __d; \ + __n = ((unsigned long)(n1) << 32) + n0; \ + __d = (d); \ + (q) = __n / __d; \ + (r) = __n % __d; \ + } while (0) +#else +#define udiv_qrnnd(q, r, n1, n0, d) \ + do { unsigned int __r; \ + (q) = __udiv_qrnnd (&__r, (n1), (n0), (d)); \ + (r) = __r; \ + } while (0) +extern unsigned long __udiv_qrnnd (unsigned int *, unsigned int, + unsigned int , unsigned int); +#endif + +#define UDIV_NEEDS_NORMALIZATION 0 + +#define abort() BUG() + +#define __BYTE_ORDER __BIG_ENDIAN diff --git a/arch/s390/include/asm/shmbuf.h b/arch/s390/include/asm/shmbuf.h new file mode 100644 index 00000000..eed2e280 --- /dev/null +++ b/arch/s390/include/asm/shmbuf.h @@ -0,0 +1,48 @@ +#ifndef _S390_SHMBUF_H +#define _S390_SHMBUF_H + +/* + * The shmid64_ds structure for S/390 architecture. + * Note extra padding because this structure is passed back and forth + * between kernel and user space. + * + * Pad space is left for: + * - 64-bit time_t to solve y2038 problem (for !__s390x__) + * - 2 miscellaneous 32-bit values + */ + +struct shmid64_ds { + struct ipc64_perm shm_perm; /* operation perms */ + size_t shm_segsz; /* size of segment (bytes) */ + __kernel_time_t shm_atime; /* last attach time */ +#ifndef __s390x__ + unsigned long __unused1; +#endif /* ! __s390x__ */ + __kernel_time_t shm_dtime; /* last detach time */ +#ifndef __s390x__ + unsigned long __unused2; +#endif /* ! __s390x__ */ + __kernel_time_t shm_ctime; /* last change time */ +#ifndef __s390x__ + unsigned long __unused3; +#endif /* ! __s390x__ */ + __kernel_pid_t shm_cpid; /* pid of creator */ + __kernel_pid_t shm_lpid; /* pid of last operator */ + unsigned long shm_nattch; /* no. of current attaches */ + unsigned long __unused4; + unsigned long __unused5; +}; + +struct shminfo64 { + unsigned long shmmax; + unsigned long shmmin; + unsigned long shmmni; + unsigned long shmseg; + unsigned long shmall; + unsigned long __unused1; + unsigned long __unused2; + unsigned long __unused3; + unsigned long __unused4; +}; + +#endif /* _S390_SHMBUF_H */ diff --git a/arch/s390/include/asm/shmparam.h b/arch/s390/include/asm/shmparam.h new file mode 100644 index 00000000..c2e0c050 --- /dev/null +++ b/arch/s390/include/asm/shmparam.h @@ -0,0 +1,13 @@ +/* + * include/asm-s390/shmparam.h + * + * S390 version + * + * Derived from "include/asm-i386/shmparam.h" + */ +#ifndef _ASM_S390_SHMPARAM_H +#define _ASM_S390_SHMPARAM_H + +#define SHMLBA PAGE_SIZE /* attach addr a multiple of this */ + +#endif /* _ASM_S390_SHMPARAM_H */ diff --git a/arch/s390/include/asm/sigcontext.h b/arch/s390/include/asm/sigcontext.h new file mode 100644 index 00000000..aeb6e0b1 --- /dev/null +++ b/arch/s390/include/asm/sigcontext.h @@ -0,0 +1,71 @@ +/* + * include/asm-s390/sigcontext.h + * + * S390 version + * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + */ + +#ifndef _ASM_S390_SIGCONTEXT_H +#define _ASM_S390_SIGCONTEXT_H + +#include <linux/compiler.h> + +#define __NUM_GPRS 16 +#define __NUM_FPRS 16 +#define __NUM_ACRS 16 + +#ifndef __s390x__ + +/* Has to be at least _NSIG_WORDS from asm/signal.h */ +#define _SIGCONTEXT_NSIG 64 +#define _SIGCONTEXT_NSIG_BPW 32 +/* Size of stack frame allocated when calling signal handler. */ +#define __SIGNAL_FRAMESIZE 96 + +#else /* __s390x__ */ + +/* Has to be at least _NSIG_WORDS from asm/signal.h */ +#define _SIGCONTEXT_NSIG 64 +#define _SIGCONTEXT_NSIG_BPW 64 +/* Size of stack frame allocated when calling signal handler. */ +#define __SIGNAL_FRAMESIZE 160 + +#endif /* __s390x__ */ + +#define _SIGCONTEXT_NSIG_WORDS (_SIGCONTEXT_NSIG / _SIGCONTEXT_NSIG_BPW) +#define _SIGMASK_COPY_SIZE (sizeof(unsigned long)*_SIGCONTEXT_NSIG_WORDS) + +typedef struct +{ + unsigned long mask; + unsigned long addr; +} __attribute__ ((aligned(8))) _psw_t; + +typedef struct +{ + _psw_t psw; + unsigned long gprs[__NUM_GPRS]; + unsigned int acrs[__NUM_ACRS]; +} _s390_regs_common; + +typedef struct +{ + unsigned int fpc; + double fprs[__NUM_FPRS]; +} _s390_fp_regs; + +typedef struct +{ + _s390_regs_common regs; + _s390_fp_regs fpregs; +} _sigregs; + +struct sigcontext +{ + unsigned long oldmask[_SIGCONTEXT_NSIG_WORDS]; + _sigregs __user *sregs; +}; + + +#endif + diff --git a/arch/s390/include/asm/siginfo.h b/arch/s390/include/asm/siginfo.h new file mode 100644 index 00000000..e0ff1ab0 --- /dev/null +++ b/arch/s390/include/asm/siginfo.h @@ -0,0 +1,18 @@ +/* + * include/asm-s390/siginfo.h + * + * S390 version + * + * Derived from "include/asm-i386/siginfo.h" + */ + +#ifndef _S390_SIGINFO_H +#define _S390_SIGINFO_H + +#ifdef __s390x__ +#define __ARCH_SI_PREAMBLE_SIZE (4 * sizeof(int)) +#endif + +#include <asm-generic/siginfo.h> + +#endif diff --git a/arch/s390/include/asm/signal.h b/arch/s390/include/asm/signal.h new file mode 100644 index 00000000..cdf5cb2f --- /dev/null +++ b/arch/s390/include/asm/signal.h @@ -0,0 +1,172 @@ +/* + * include/asm-s390/signal.h + * + * S390 version + * + * Derived from "include/asm-i386/signal.h" + */ + +#ifndef _ASMS390_SIGNAL_H +#define _ASMS390_SIGNAL_H + +#include <linux/types.h> +#include <linux/time.h> + +/* Avoid too many header ordering problems. */ +struct siginfo; +struct pt_regs; + +#ifdef __KERNEL__ +/* Most things should be clean enough to redefine this at will, if care + is taken to make libc match. */ +#include <asm/sigcontext.h> +#define _NSIG _SIGCONTEXT_NSIG +#define _NSIG_BPW _SIGCONTEXT_NSIG_BPW +#define _NSIG_WORDS _SIGCONTEXT_NSIG_WORDS + +typedef unsigned long old_sigset_t; /* at least 32 bits */ + +typedef struct { + unsigned long sig[_NSIG_WORDS]; +} sigset_t; + +#else +/* Here we must cater to libcs that poke about in kernel headers. */ + +#define NSIG 32 +typedef unsigned long sigset_t; + +#endif /* __KERNEL__ */ + +#define SIGHUP 1 +#define SIGINT 2 +#define SIGQUIT 3 +#define SIGILL 4 +#define SIGTRAP 5 +#define SIGABRT 6 +#define SIGIOT 6 +#define SIGBUS 7 +#define SIGFPE 8 +#define SIGKILL 9 +#define SIGUSR1 10 +#define SIGSEGV 11 +#define SIGUSR2 12 +#define SIGPIPE 13 +#define SIGALRM 14 +#define SIGTERM 15 +#define SIGSTKFLT 16 +#define SIGCHLD 17 +#define SIGCONT 18 +#define SIGSTOP 19 +#define SIGTSTP 20 +#define SIGTTIN 21 +#define SIGTTOU 22 +#define SIGURG 23 +#define SIGXCPU 24 +#define SIGXFSZ 25 +#define SIGVTALRM 26 +#define SIGPROF 27 +#define SIGWINCH 28 +#define SIGIO 29 +#define SIGPOLL SIGIO +/* +#define SIGLOST 29 +*/ +#define SIGPWR 30 +#define SIGSYS 31 +#define SIGUNUSED 31 + +/* These should not be considered constants from userland. */ +#define SIGRTMIN 32 +#define SIGRTMAX _NSIG + +/* + * SA_FLAGS values: + * + * SA_ONSTACK indicates that a registered stack_t will be used. + * SA_RESTART flag to get restarting signals (which were the default long ago) + * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop. + * SA_RESETHAND clears the handler when the signal is delivered. + * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies. + * SA_NODEFER prevents the current signal from being masked in the handler. + * + * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single + * Unix names RESETHAND and NODEFER respectively. + */ +#define SA_NOCLDSTOP 0x00000001 +#define SA_NOCLDWAIT 0x00000002 +#define SA_SIGINFO 0x00000004 +#define SA_ONSTACK 0x08000000 +#define SA_RESTART 0x10000000 +#define SA_NODEFER 0x40000000 +#define SA_RESETHAND 0x80000000 + +#define SA_NOMASK SA_NODEFER +#define SA_ONESHOT SA_RESETHAND + +#define SA_RESTORER 0x04000000 + +/* + * sigaltstack controls + */ +#define SS_ONSTACK 1 +#define SS_DISABLE 2 + +#define MINSIGSTKSZ 2048 +#define SIGSTKSZ 8192 + +#include <asm-generic/signal-defs.h> + +#ifdef __KERNEL__ +struct old_sigaction { + __sighandler_t sa_handler; + old_sigset_t sa_mask; + unsigned long sa_flags; + void (*sa_restorer)(void); +}; + +struct sigaction { + __sighandler_t sa_handler; + unsigned long sa_flags; + void (*sa_restorer)(void); + sigset_t sa_mask; /* mask last for extensibility */ +}; + +struct k_sigaction { + struct sigaction sa; +}; + +#define ptrace_signal_deliver(regs, cookie) do { } while (0) + +#else +/* Here we must cater to libcs that poke about in kernel headers. */ + +struct sigaction { + union { + __sighandler_t _sa_handler; + void (*_sa_sigaction)(int, struct siginfo *, void *); + } _u; +#ifndef __s390x__ /* lovely */ + sigset_t sa_mask; + unsigned long sa_flags; + void (*sa_restorer)(void); +#else /* __s390x__ */ + unsigned long sa_flags; + void (*sa_restorer)(void); + sigset_t sa_mask; +#endif /* __s390x__ */ +}; + +#define sa_handler _u._sa_handler +#define sa_sigaction _u._sa_sigaction + +#endif /* __KERNEL__ */ + +typedef struct sigaltstack { + void __user *ss_sp; + int ss_flags; + size_t ss_size; +} stack_t; + + +#endif diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h new file mode 100644 index 00000000..c77c6de6 --- /dev/null +++ b/arch/s390/include/asm/smp.h @@ -0,0 +1,64 @@ +/* + * Copyright IBM Corp. 1999,2012 + * Author(s): Denis Joseph Barrow, + * Martin Schwidefsky <schwidefsky@de.ibm.com>, + * Heiko Carstens <heiko.carstens@de.ibm.com>, + */ +#ifndef __ASM_SMP_H +#define __ASM_SMP_H + +#ifdef CONFIG_SMP + +#include <asm/lowcore.h> + +#define raw_smp_processor_id() (S390_lowcore.cpu_nr) + +extern struct mutex smp_cpu_state_mutex; +extern struct save_area *zfcpdump_save_areas[NR_CPUS + 1]; + +extern int __cpu_up(unsigned int cpu); + +extern void arch_send_call_function_single_ipi(int cpu); +extern void arch_send_call_function_ipi_mask(const struct cpumask *mask); + +extern void smp_call_online_cpu(void (*func)(void *), void *); +extern void smp_call_ipl_cpu(void (*func)(void *), void *); + +extern int smp_find_processor_id(u16 address); +extern int smp_store_status(int cpu); +extern int smp_vcpu_scheduled(int cpu); +extern void smp_yield_cpu(int cpu); +extern void smp_yield(void); +extern void smp_stop_cpu(void); + +#else /* CONFIG_SMP */ + +static inline void smp_call_ipl_cpu(void (*func)(void *), void *data) +{ + func(data); +} + +static inline void smp_call_online_cpu(void (*func)(void *), void *data) +{ + func(data); +} + +static inline int smp_find_processor_id(int address) { return 0; } +static inline int smp_vcpu_scheduled(int cpu) { return 1; } +static inline void smp_yield_cpu(int cpu) { } +static inline void smp_yield(void) { } +static inline void smp_stop_cpu(void) { } + +#endif /* CONFIG_SMP */ + +#ifdef CONFIG_HOTPLUG_CPU +extern int smp_rescan_cpus(void); +extern void __noreturn cpu_die(void); +extern void __cpu_die(unsigned int cpu); +extern int __cpu_disable(void); +#else +static inline int smp_rescan_cpus(void) { return 0; } +static inline void cpu_die(void) { } +#endif + +#endif /* __ASM_SMP_H */ diff --git a/arch/s390/include/asm/socket.h b/arch/s390/include/asm/socket.h new file mode 100644 index 00000000..c91b7209 --- /dev/null +++ b/arch/s390/include/asm/socket.h @@ -0,0 +1,80 @@ +/* + * include/asm-s390/socket.h + * + * S390 version + * + * Derived from "include/asm-i386/socket.h" + */ + +#ifndef _ASM_SOCKET_H +#define _ASM_SOCKET_H + +#include <asm/sockios.h> + +/* For setsockopt(2) */ +#define SOL_SOCKET 1 + +#define SO_DEBUG 1 +#define SO_REUSEADDR 2 +#define SO_TYPE 3 +#define SO_ERROR 4 +#define SO_DONTROUTE 5 +#define SO_BROADCAST 6 +#define SO_SNDBUF 7 +#define SO_RCVBUF 8 +#define SO_SNDBUFFORCE 32 +#define SO_RCVBUFFORCE 33 +#define SO_KEEPALIVE 9 +#define SO_OOBINLINE 10 +#define SO_NO_CHECK 11 +#define SO_PRIORITY 12 +#define SO_LINGER 13 +#define SO_BSDCOMPAT 14 +/* To add :#define SO_REUSEPORT 15 */ +#define SO_PASSCRED 16 +#define SO_PEERCRED 17 +#define SO_RCVLOWAT 18 +#define SO_SNDLOWAT 19 +#define SO_RCVTIMEO 20 +#define SO_SNDTIMEO 21 + +/* Security levels - as per NRL IPv6 - don't actually do anything */ +#define SO_SECURITY_AUTHENTICATION 22 +#define SO_SECURITY_ENCRYPTION_TRANSPORT 23 +#define SO_SECURITY_ENCRYPTION_NETWORK 24 + +#define SO_BINDTODEVICE 25 + +/* Socket filtering */ +#define SO_ATTACH_FILTER 26 +#define SO_DETACH_FILTER 27 + +#define SO_PEERNAME 28 +#define SO_TIMESTAMP 29 +#define SCM_TIMESTAMP SO_TIMESTAMP + +#define SO_ACCEPTCONN 30 + +#define SO_PEERSEC 31 +#define SO_PASSSEC 34 +#define SO_TIMESTAMPNS 35 +#define SCM_TIMESTAMPNS SO_TIMESTAMPNS + +#define SO_MARK 36 + +#define SO_TIMESTAMPING 37 +#define SCM_TIMESTAMPING SO_TIMESTAMPING + +#define SO_PROTOCOL 38 +#define SO_DOMAIN 39 + +#define SO_RXQ_OVFL 40 + +#define SO_WIFI_STATUS 41 +#define SCM_WIFI_STATUS SO_WIFI_STATUS +#define SO_PEEK_OFF 42 + +/* Instruct lower device to use last 4-bytes of skb data as FCS */ +#define SO_NOFCS 43 + +#endif /* _ASM_SOCKET_H */ diff --git a/arch/s390/include/asm/sockios.h b/arch/s390/include/asm/sockios.h new file mode 100644 index 00000000..6f60eee7 --- /dev/null +++ b/arch/s390/include/asm/sockios.h @@ -0,0 +1,6 @@ +#ifndef _ASM_S390_SOCKIOS_H +#define _ASM_S390_SOCKIOS_H + +#include <asm-generic/sockios.h> + +#endif diff --git a/arch/s390/include/asm/sparsemem.h b/arch/s390/include/asm/sparsemem.h new file mode 100644 index 00000000..0fb34027 --- /dev/null +++ b/arch/s390/include/asm/sparsemem.h @@ -0,0 +1,18 @@ +#ifndef _ASM_S390_SPARSEMEM_H +#define _ASM_S390_SPARSEMEM_H + +#ifdef CONFIG_64BIT + +#define SECTION_SIZE_BITS 28 +#define MAX_PHYSADDR_BITS 46 +#define MAX_PHYSMEM_BITS 46 + +#else + +#define SECTION_SIZE_BITS 25 +#define MAX_PHYSADDR_BITS 31 +#define MAX_PHYSMEM_BITS 31 + +#endif /* CONFIG_64BIT */ + +#endif /* _ASM_S390_SPARSEMEM_H */ diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h new file mode 100644 index 00000000..fd94dfec --- /dev/null +++ b/arch/s390/include/asm/spinlock.h @@ -0,0 +1,178 @@ +/* + * include/asm-s390/spinlock.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/spinlock.h" + */ + +#ifndef __ASM_SPINLOCK_H +#define __ASM_SPINLOCK_H + +#include <linux/smp.h> + +extern int spin_retry; + +static inline int +_raw_compare_and_swap(volatile unsigned int *lock, + unsigned int old, unsigned int new) +{ + asm volatile( + " cs %0,%3,%1" + : "=d" (old), "=Q" (*lock) + : "0" (old), "d" (new), "Q" (*lock) + : "cc", "memory" ); + return old; +} + +/* + * Simple spin lock operations. There are two variants, one clears IRQ's + * on the local processor, one does not. + * + * We make no fairness assumptions. They have a cost. + * + * (the type definitions are in asm/spinlock_types.h) + */ + +#define arch_spin_is_locked(x) ((x)->owner_cpu != 0) +#define arch_spin_unlock_wait(lock) \ + do { while (arch_spin_is_locked(lock)) \ + arch_spin_relax(lock); } while (0) + +extern void arch_spin_lock_wait(arch_spinlock_t *); +extern void arch_spin_lock_wait_flags(arch_spinlock_t *, unsigned long flags); +extern int arch_spin_trylock_retry(arch_spinlock_t *); +extern void arch_spin_relax(arch_spinlock_t *lock); + +static inline void arch_spin_lock(arch_spinlock_t *lp) +{ + int old; + + old = _raw_compare_and_swap(&lp->owner_cpu, 0, ~smp_processor_id()); + if (likely(old == 0)) + return; + arch_spin_lock_wait(lp); +} + +static inline void arch_spin_lock_flags(arch_spinlock_t *lp, + unsigned long flags) +{ + int old; + + old = _raw_compare_and_swap(&lp->owner_cpu, 0, ~smp_processor_id()); + if (likely(old == 0)) + return; + arch_spin_lock_wait_flags(lp, flags); +} + +static inline int arch_spin_trylock(arch_spinlock_t *lp) +{ + int old; + + old = _raw_compare_and_swap(&lp->owner_cpu, 0, ~smp_processor_id()); + if (likely(old == 0)) + return 1; + return arch_spin_trylock_retry(lp); +} + +static inline void arch_spin_unlock(arch_spinlock_t *lp) +{ + _raw_compare_and_swap(&lp->owner_cpu, lp->owner_cpu, 0); +} + +/* + * Read-write spinlocks, allowing multiple readers + * but only one writer. + * + * NOTE! it is quite common to have readers in interrupts + * but no interrupt writers. For those circumstances we + * can "mix" irq-safe locks - any writer needs to get a + * irq-safe write-lock, but readers can get non-irqsafe + * read-locks. + */ + +/** + * read_can_lock - would read_trylock() succeed? + * @lock: the rwlock in question. + */ +#define arch_read_can_lock(x) ((int)(x)->lock >= 0) + +/** + * write_can_lock - would write_trylock() succeed? + * @lock: the rwlock in question. + */ +#define arch_write_can_lock(x) ((x)->lock == 0) + +extern void _raw_read_lock_wait(arch_rwlock_t *lp); +extern void _raw_read_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags); +extern int _raw_read_trylock_retry(arch_rwlock_t *lp); +extern void _raw_write_lock_wait(arch_rwlock_t *lp); +extern void _raw_write_lock_wait_flags(arch_rwlock_t *lp, unsigned long flags); +extern int _raw_write_trylock_retry(arch_rwlock_t *lp); + +static inline void arch_read_lock(arch_rwlock_t *rw) +{ + unsigned int old; + old = rw->lock & 0x7fffffffU; + if (_raw_compare_and_swap(&rw->lock, old, old + 1) != old) + _raw_read_lock_wait(rw); +} + +static inline void arch_read_lock_flags(arch_rwlock_t *rw, unsigned long flags) +{ + unsigned int old; + old = rw->lock & 0x7fffffffU; + if (_raw_compare_and_swap(&rw->lock, old, old + 1) != old) + _raw_read_lock_wait_flags(rw, flags); +} + +static inline void arch_read_unlock(arch_rwlock_t *rw) +{ + unsigned int old, cmp; + + old = rw->lock; + do { + cmp = old; + old = _raw_compare_and_swap(&rw->lock, old, old - 1); + } while (cmp != old); +} + +static inline void arch_write_lock(arch_rwlock_t *rw) +{ + if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0)) + _raw_write_lock_wait(rw); +} + +static inline void arch_write_lock_flags(arch_rwlock_t *rw, unsigned long flags) +{ + if (unlikely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) != 0)) + _raw_write_lock_wait_flags(rw, flags); +} + +static inline void arch_write_unlock(arch_rwlock_t *rw) +{ + _raw_compare_and_swap(&rw->lock, 0x80000000, 0); +} + +static inline int arch_read_trylock(arch_rwlock_t *rw) +{ + unsigned int old; + old = rw->lock & 0x7fffffffU; + if (likely(_raw_compare_and_swap(&rw->lock, old, old + 1) == old)) + return 1; + return _raw_read_trylock_retry(rw); +} + +static inline int arch_write_trylock(arch_rwlock_t *rw) +{ + if (likely(_raw_compare_and_swap(&rw->lock, 0, 0x80000000) == 0)) + return 1; + return _raw_write_trylock_retry(rw); +} + +#define arch_read_relax(lock) cpu_relax() +#define arch_write_relax(lock) cpu_relax() + +#endif /* __ASM_SPINLOCK_H */ diff --git a/arch/s390/include/asm/spinlock_types.h b/arch/s390/include/asm/spinlock_types.h new file mode 100644 index 00000000..9c76656a --- /dev/null +++ b/arch/s390/include/asm/spinlock_types.h @@ -0,0 +1,20 @@ +#ifndef __ASM_SPINLOCK_TYPES_H +#define __ASM_SPINLOCK_TYPES_H + +#ifndef __LINUX_SPINLOCK_TYPES_H +# error "please don't include this file directly" +#endif + +typedef struct { + volatile unsigned int owner_cpu; +} __attribute__ ((aligned (4))) arch_spinlock_t; + +#define __ARCH_SPIN_LOCK_UNLOCKED { 0 } + +typedef struct { + volatile unsigned int lock; +} arch_rwlock_t; + +#define __ARCH_RW_LOCK_UNLOCKED { 0 } + +#endif diff --git a/arch/s390/include/asm/stat.h b/arch/s390/include/asm/stat.h new file mode 100644 index 00000000..d92959ee --- /dev/null +++ b/arch/s390/include/asm/stat.h @@ -0,0 +1,105 @@ +/* + * include/asm-s390/stat.h + * + * S390 version + * + * Derived from "include/asm-i386/stat.h" + */ + +#ifndef _S390_STAT_H +#define _S390_STAT_H + +#ifndef __s390x__ +struct __old_kernel_stat { + unsigned short st_dev; + unsigned short st_ino; + unsigned short st_mode; + unsigned short st_nlink; + unsigned short st_uid; + unsigned short st_gid; + unsigned short st_rdev; + unsigned long st_size; + unsigned long st_atime; + unsigned long st_mtime; + unsigned long st_ctime; +}; + +struct stat { + unsigned short st_dev; + unsigned short __pad1; + unsigned long st_ino; + unsigned short st_mode; + unsigned short st_nlink; + unsigned short st_uid; + unsigned short st_gid; + unsigned short st_rdev; + unsigned short __pad2; + unsigned long st_size; + unsigned long st_blksize; + unsigned long st_blocks; + unsigned long st_atime; + unsigned long st_atime_nsec; + unsigned long st_mtime; + unsigned long st_mtime_nsec; + unsigned long st_ctime; + unsigned long st_ctime_nsec; + unsigned long __unused4; + unsigned long __unused5; +}; + +/* This matches struct stat64 in glibc2.1, hence the absolutely + * insane amounts of padding around dev_t's. + */ +struct stat64 { + unsigned long long st_dev; + unsigned int __pad1; +#define STAT64_HAS_BROKEN_ST_INO 1 + unsigned long __st_ino; + unsigned int st_mode; + unsigned int st_nlink; + unsigned long st_uid; + unsigned long st_gid; + unsigned long long st_rdev; + unsigned int __pad3; + long long st_size; + unsigned long st_blksize; + unsigned char __pad4[4]; + unsigned long __pad5; /* future possible st_blocks high bits */ + unsigned long st_blocks; /* Number 512-byte blocks allocated. */ + unsigned long st_atime; + unsigned long st_atime_nsec; + unsigned long st_mtime; + unsigned long st_mtime_nsec; + unsigned long st_ctime; + unsigned long st_ctime_nsec; /* will be high 32 bits of ctime someday */ + unsigned long long st_ino; +}; + +#else /* __s390x__ */ + +struct stat { + unsigned long st_dev; + unsigned long st_ino; + unsigned long st_nlink; + unsigned int st_mode; + unsigned int st_uid; + unsigned int st_gid; + unsigned int __pad1; + unsigned long st_rdev; + unsigned long st_size; + unsigned long st_atime; + unsigned long st_atime_nsec; + unsigned long st_mtime; + unsigned long st_mtime_nsec; + unsigned long st_ctime; + unsigned long st_ctime_nsec; + unsigned long st_blksize; + long st_blocks; + unsigned long __unused[3]; +}; + +#endif /* __s390x__ */ + +#define STAT_HAVE_NSEC 1 + +#endif diff --git a/arch/s390/include/asm/statfs.h b/arch/s390/include/asm/statfs.h new file mode 100644 index 00000000..3be7fbd4 --- /dev/null +++ b/arch/s390/include/asm/statfs.h @@ -0,0 +1,71 @@ +/* + * include/asm-s390/statfs.h + * + * S390 version + * + * Derived from "include/asm-i386/statfs.h" + */ + +#ifndef _S390_STATFS_H +#define _S390_STATFS_H + +#ifndef __s390x__ +#include <asm-generic/statfs.h> +#else +/* + * We can't use <asm-generic/statfs.h> because in 64-bit mode + * we mix ints of different sizes in our struct statfs. + */ + +#ifndef __KERNEL_STRICT_NAMES +#include <linux/types.h> +typedef __kernel_fsid_t fsid_t; +#endif + +struct statfs { + int f_type; + int f_bsize; + long f_blocks; + long f_bfree; + long f_bavail; + long f_files; + long f_ffree; + __kernel_fsid_t f_fsid; + int f_namelen; + int f_frsize; + int f_flags; + int f_spare[4]; +}; + +struct statfs64 { + int f_type; + int f_bsize; + long f_blocks; + long f_bfree; + long f_bavail; + long f_files; + long f_ffree; + __kernel_fsid_t f_fsid; + int f_namelen; + int f_frsize; + int f_flags; + int f_spare[4]; +}; + +struct compat_statfs64 { + __u32 f_type; + __u32 f_bsize; + __u64 f_blocks; + __u64 f_bfree; + __u64 f_bavail; + __u64 f_files; + __u64 f_ffree; + __kernel_fsid_t f_fsid; + __u32 f_namelen; + __u32 f_frsize; + __u32 f_flags; + __u32 f_spare[4]; +}; + +#endif /* __s390x__ */ +#endif diff --git a/arch/s390/include/asm/string.h b/arch/s390/include/asm/string.h new file mode 100644 index 00000000..cd0241db --- /dev/null +++ b/arch/s390/include/asm/string.h @@ -0,0 +1,157 @@ +/* + * include/asm-s390/string.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com), + */ + +#ifndef _S390_STRING_H_ +#define _S390_STRING_H_ + +#ifdef __KERNEL__ + +#ifndef _LINUX_TYPES_H +#include <linux/types.h> +#endif + +#define __HAVE_ARCH_MEMCHR /* inline & arch function */ +#define __HAVE_ARCH_MEMCMP /* arch function */ +#define __HAVE_ARCH_MEMCPY /* gcc builtin & arch function */ +#define __HAVE_ARCH_MEMSCAN /* inline & arch function */ +#define __HAVE_ARCH_MEMSET /* gcc builtin & arch function */ +#define __HAVE_ARCH_STRCAT /* inline & arch function */ +#define __HAVE_ARCH_STRCMP /* arch function */ +#define __HAVE_ARCH_STRCPY /* inline & arch function */ +#define __HAVE_ARCH_STRLCAT /* arch function */ +#define __HAVE_ARCH_STRLCPY /* arch function */ +#define __HAVE_ARCH_STRLEN /* inline & arch function */ +#define __HAVE_ARCH_STRNCAT /* arch function */ +#define __HAVE_ARCH_STRNCPY /* arch function */ +#define __HAVE_ARCH_STRNLEN /* inline & arch function */ +#define __HAVE_ARCH_STRRCHR /* arch function */ +#define __HAVE_ARCH_STRSTR /* arch function */ + +/* Prototypes for non-inlined arch strings functions. */ +extern int memcmp(const void *, const void *, size_t); +extern void *memcpy(void *, const void *, size_t); +extern void *memset(void *, int, size_t); +extern int strcmp(const char *,const char *); +extern size_t strlcat(char *, const char *, size_t); +extern size_t strlcpy(char *, const char *, size_t); +extern char *strncat(char *, const char *, size_t); +extern char *strncpy(char *, const char *, size_t); +extern char *strrchr(const char *, int); +extern char *strstr(const char *, const char *); + +#undef __HAVE_ARCH_MEMMOVE +#undef __HAVE_ARCH_STRCHR +#undef __HAVE_ARCH_STRNCHR +#undef __HAVE_ARCH_STRNCMP +#undef __HAVE_ARCH_STRNICMP +#undef __HAVE_ARCH_STRPBRK +#undef __HAVE_ARCH_STRSEP +#undef __HAVE_ARCH_STRSPN + +#if !defined(IN_ARCH_STRING_C) + +static inline void *memchr(const void * s, int c, size_t n) +{ + register int r0 asm("0") = (char) c; + const void *ret = s + n; + + asm volatile( + "0: srst %0,%1\n" + " jo 0b\n" + " jl 1f\n" + " la %0,0\n" + "1:" + : "+a" (ret), "+&a" (s) : "d" (r0) : "cc"); + return (void *) ret; +} + +static inline void *memscan(void *s, int c, size_t n) +{ + register int r0 asm("0") = (char) c; + const void *ret = s + n; + + asm volatile( + "0: srst %0,%1\n" + " jo 0b\n" + : "+a" (ret), "+&a" (s) : "d" (r0) : "cc"); + return (void *) ret; +} + +static inline char *strcat(char *dst, const char *src) +{ + register int r0 asm("0") = 0; + unsigned long dummy; + char *ret = dst; + + asm volatile( + "0: srst %0,%1\n" + " jo 0b\n" + "1: mvst %0,%2\n" + " jo 1b" + : "=&a" (dummy), "+a" (dst), "+a" (src) + : "d" (r0), "0" (0) : "cc", "memory" ); + return ret; +} + +static inline char *strcpy(char *dst, const char *src) +{ +#if __GNUC__ < 4 + register int r0 asm("0") = 0; + char *ret = dst; + + asm volatile( + "0: mvst %0,%1\n" + " jo 0b" + : "+&a" (dst), "+&a" (src) : "d" (r0) + : "cc", "memory"); + return ret; +#else + return __builtin_strcpy(dst, src); +#endif +} + +static inline size_t strlen(const char *s) +{ +#if __GNUC__ < 4 + register unsigned long r0 asm("0") = 0; + const char *tmp = s; + + asm volatile( + "0: srst %0,%1\n" + " jo 0b" + : "+d" (r0), "+a" (tmp) : : "cc"); + return r0 - (unsigned long) s; +#else + return __builtin_strlen(s); +#endif +} + +static inline size_t strnlen(const char * s, size_t n) +{ + register int r0 asm("0") = 0; + const char *tmp = s; + const char *end = s + n; + + asm volatile( + "0: srst %0,%1\n" + " jo 0b" + : "+a" (end), "+a" (tmp) : "d" (r0) : "cc"); + return end - s; +} +#else /* IN_ARCH_STRING_C */ +void *memchr(const void * s, int c, size_t n); +void *memscan(void *s, int c, size_t n); +char *strcat(char *dst, const char *src); +char *strcpy(char *dst, const char *src); +size_t strlen(const char *s); +size_t strnlen(const char * s, size_t n); +#endif /* !IN_ARCH_STRING_C */ + +#endif /* __KERNEL__ */ + +#endif /* __S390_STRING_H_ */ diff --git a/arch/s390/include/asm/swab.h b/arch/s390/include/asm/swab.h new file mode 100644 index 00000000..a3e4ebb3 --- /dev/null +++ b/arch/s390/include/asm/swab.h @@ -0,0 +1,91 @@ +#ifndef _S390_SWAB_H +#define _S390_SWAB_H + +/* + * include/asm-s390/swab.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + */ + +#include <linux/types.h> + +#ifndef __s390x__ +# define __SWAB_64_THRU_32__ +#endif + +#ifdef __s390x__ +static inline __u64 __arch_swab64p(const __u64 *x) +{ + __u64 result; + + asm volatile("lrvg %0,%1" : "=d" (result) : "m" (*x)); + return result; +} +#define __arch_swab64p __arch_swab64p + +static inline __u64 __arch_swab64(__u64 x) +{ + __u64 result; + + asm volatile("lrvgr %0,%1" : "=d" (result) : "d" (x)); + return result; +} +#define __arch_swab64 __arch_swab64 + +static inline void __arch_swab64s(__u64 *x) +{ + *x = __arch_swab64p(x); +} +#define __arch_swab64s __arch_swab64s +#endif /* __s390x__ */ + +static inline __u32 __arch_swab32p(const __u32 *x) +{ + __u32 result; + + asm volatile( +#ifndef __s390x__ + " icm %0,8,%O1+3(%R1)\n" + " icm %0,4,%O1+2(%R1)\n" + " icm %0,2,%O1+1(%R1)\n" + " ic %0,%1" + : "=&d" (result) : "Q" (*x) : "cc"); +#else /* __s390x__ */ + " lrv %0,%1" + : "=d" (result) : "m" (*x)); +#endif /* __s390x__ */ + return result; +} +#define __arch_swab32p __arch_swab32p + +#ifdef __s390x__ +static inline __u32 __arch_swab32(__u32 x) +{ + __u32 result; + + asm volatile("lrvr %0,%1" : "=d" (result) : "d" (x)); + return result; +} +#define __arch_swab32 __arch_swab32 +#endif /* __s390x__ */ + +static inline __u16 __arch_swab16p(const __u16 *x) +{ + __u16 result; + + asm volatile( +#ifndef __s390x__ + " icm %0,2,%O1+1(%R1)\n" + " ic %0,%1\n" + : "=&d" (result) : "Q" (*x) : "cc"); +#else /* __s390x__ */ + " lrvh %0,%1" + : "=d" (result) : "m" (*x)); +#endif /* __s390x__ */ + return result; +} +#define __arch_swab16p __arch_swab16p + +#endif /* _S390_SWAB_H */ diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h new file mode 100644 index 00000000..f223068b --- /dev/null +++ b/arch/s390/include/asm/switch_to.h @@ -0,0 +1,100 @@ +/* + * Copyright IBM Corp. 1999, 2009 + * + * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com> + */ + +#ifndef __ASM_SWITCH_TO_H +#define __ASM_SWITCH_TO_H + +#include <linux/thread_info.h> + +extern struct task_struct *__switch_to(void *, void *); +extern void update_per_regs(struct task_struct *task); + +static inline void save_fp_regs(s390_fp_regs *fpregs) +{ + asm volatile( + " std 0,%O0+8(%R0)\n" + " std 2,%O0+24(%R0)\n" + " std 4,%O0+40(%R0)\n" + " std 6,%O0+56(%R0)" + : "=Q" (*fpregs) : "Q" (*fpregs)); + if (!MACHINE_HAS_IEEE) + return; + asm volatile( + " stfpc %0\n" + " std 1,%O0+16(%R0)\n" + " std 3,%O0+32(%R0)\n" + " std 5,%O0+48(%R0)\n" + " std 7,%O0+64(%R0)\n" + " std 8,%O0+72(%R0)\n" + " std 9,%O0+80(%R0)\n" + " std 10,%O0+88(%R0)\n" + " std 11,%O0+96(%R0)\n" + " std 12,%O0+104(%R0)\n" + " std 13,%O0+112(%R0)\n" + " std 14,%O0+120(%R0)\n" + " std 15,%O0+128(%R0)\n" + : "=Q" (*fpregs) : "Q" (*fpregs)); +} + +static inline void restore_fp_regs(s390_fp_regs *fpregs) +{ + asm volatile( + " ld 0,%O0+8(%R0)\n" + " ld 2,%O0+24(%R0)\n" + " ld 4,%O0+40(%R0)\n" + " ld 6,%O0+56(%R0)" + : : "Q" (*fpregs)); + if (!MACHINE_HAS_IEEE) + return; + asm volatile( + " lfpc %0\n" + " ld 1,%O0+16(%R0)\n" + " ld 3,%O0+32(%R0)\n" + " ld 5,%O0+48(%R0)\n" + " ld 7,%O0+64(%R0)\n" + " ld 8,%O0+72(%R0)\n" + " ld 9,%O0+80(%R0)\n" + " ld 10,%O0+88(%R0)\n" + " ld 11,%O0+96(%R0)\n" + " ld 12,%O0+104(%R0)\n" + " ld 13,%O0+112(%R0)\n" + " ld 14,%O0+120(%R0)\n" + " ld 15,%O0+128(%R0)\n" + : : "Q" (*fpregs)); +} + +static inline void save_access_regs(unsigned int *acrs) +{ + asm volatile("stam 0,15,%0" : "=Q" (*acrs)); +} + +static inline void restore_access_regs(unsigned int *acrs) +{ + asm volatile("lam 0,15,%0" : : "Q" (*acrs)); +} + +#define switch_to(prev,next,last) do { \ + if (prev->mm) { \ + save_fp_regs(&prev->thread.fp_regs); \ + save_access_regs(&prev->thread.acrs[0]); \ + } \ + if (next->mm) { \ + restore_fp_regs(&next->thread.fp_regs); \ + restore_access_regs(&next->thread.acrs[0]); \ + update_per_regs(next); \ + } \ + prev = __switch_to(prev,next); \ +} while (0) + +extern void account_vtime(struct task_struct *, struct task_struct *); +extern void account_tick_vtime(struct task_struct *); + +#define finish_arch_switch(prev) do { \ + set_fs(current->thread.mm_segment); \ + account_vtime(prev, current); \ +} while (0) + +#endif /* __ASM_SWITCH_TO_H */ diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h new file mode 100644 index 00000000..fb214dd9 --- /dev/null +++ b/arch/s390/include/asm/syscall.h @@ -0,0 +1,90 @@ +/* + * Access to user system call parameters and results + * + * Copyright IBM Corp. 2008 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + */ + +#ifndef _ASM_SYSCALL_H +#define _ASM_SYSCALL_H 1 + +#include <linux/sched.h> +#include <linux/err.h> +#include <asm/ptrace.h> + +/* + * The syscall table always contains 32 bit pointers since we know that the + * address of the function to be called is (way) below 4GB. So the "int" + * type here is what we want [need] for both 32 bit and 64 bit systems. + */ +extern const unsigned int sys_call_table[]; + +static inline long syscall_get_nr(struct task_struct *task, + struct pt_regs *regs) +{ + return test_tsk_thread_flag(task, TIF_SYSCALL) ? + (regs->int_code & 0xffff) : -1; +} + +static inline void syscall_rollback(struct task_struct *task, + struct pt_regs *regs) +{ + regs->gprs[2] = regs->orig_gpr2; +} + +static inline long syscall_get_error(struct task_struct *task, + struct pt_regs *regs) +{ + return IS_ERR_VALUE(regs->gprs[2]) ? regs->gprs[2] : 0; +} + +static inline long syscall_get_return_value(struct task_struct *task, + struct pt_regs *regs) +{ + return regs->gprs[2]; +} + +static inline void syscall_set_return_value(struct task_struct *task, + struct pt_regs *regs, + int error, long val) +{ + regs->gprs[2] = error ? -error : val; +} + +static inline void syscall_get_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + unsigned long *args) +{ + unsigned long mask = -1UL; + + BUG_ON(i + n > 6); +#ifdef CONFIG_COMPAT + if (test_tsk_thread_flag(task, TIF_31BIT)) + mask = 0xffffffff; +#endif + while (n-- > 0) + if (i + n > 0) + args[n] = regs->gprs[2 + i + n] & mask; + if (i == 0) + args[0] = regs->orig_gpr2 & mask; +} + +static inline void syscall_set_arguments(struct task_struct *task, + struct pt_regs *regs, + unsigned int i, unsigned int n, + const unsigned long *args) +{ + BUG_ON(i + n > 6); + while (n-- > 0) + if (i + n > 0) + regs->gprs[2 + i + n] = args[n]; + if (i == 0) + regs->orig_gpr2 = args[0]; +} + +#endif /* _ASM_SYSCALL_H */ diff --git a/arch/s390/include/asm/sysinfo.h b/arch/s390/include/asm/sysinfo.h new file mode 100644 index 00000000..79d3d6e2 --- /dev/null +++ b/arch/s390/include/asm/sysinfo.h @@ -0,0 +1,172 @@ +/* + * definition for store system information stsi + * + * Copyright IBM Corp. 2001,2008 + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License (version 2 only) + * as published by the Free Software Foundation. + * + * Author(s): Ulrich Weigand <weigand@de.ibm.com> + * Christian Borntraeger <borntraeger@de.ibm.com> + */ + +#ifndef __ASM_S390_SYSINFO_H +#define __ASM_S390_SYSINFO_H + +#include <asm/bitsperlong.h> + +struct sysinfo_1_1_1 { + unsigned short :16; + unsigned char ccr; + unsigned char cai; + char reserved_0[28]; + char manufacturer[16]; + char type[4]; + char reserved_1[12]; + char model_capacity[16]; + char sequence[16]; + char plant[4]; + char model[16]; + char model_perm_cap[16]; + char model_temp_cap[16]; + char model_cap_rating[4]; + char model_perm_cap_rating[4]; + char model_temp_cap_rating[4]; +}; + +struct sysinfo_1_2_1 { + char reserved_0[80]; + char sequence[16]; + char plant[4]; + char reserved_1[2]; + unsigned short cpu_address; +}; + +struct sysinfo_1_2_2 { + char format; + char reserved_0[1]; + unsigned short acc_offset; + char reserved_1[24]; + unsigned int secondary_capability; + unsigned int capability; + unsigned short cpus_total; + unsigned short cpus_configured; + unsigned short cpus_standby; + unsigned short cpus_reserved; + unsigned short adjustment[0]; +}; + +struct sysinfo_1_2_2_extension { + unsigned int alt_capability; + unsigned short alt_adjustment[0]; +}; + +struct sysinfo_2_2_1 { + char reserved_0[80]; + char sequence[16]; + char plant[4]; + unsigned short cpu_id; + unsigned short cpu_address; +}; + +struct sysinfo_2_2_2 { + char reserved_0[32]; + unsigned short lpar_number; + char reserved_1; + unsigned char characteristics; + unsigned short cpus_total; + unsigned short cpus_configured; + unsigned short cpus_standby; + unsigned short cpus_reserved; + char name[8]; + unsigned int caf; + char reserved_2[16]; + unsigned short cpus_dedicated; + unsigned short cpus_shared; +}; + +#define LPAR_CHAR_DEDICATED (1 << 7) +#define LPAR_CHAR_SHARED (1 << 6) +#define LPAR_CHAR_LIMITED (1 << 5) + +struct sysinfo_3_2_2 { + char reserved_0[31]; + unsigned char :4; + unsigned char count:4; + struct { + char reserved_0[4]; + unsigned short cpus_total; + unsigned short cpus_configured; + unsigned short cpus_standby; + unsigned short cpus_reserved; + char name[8]; + unsigned int caf; + char cpi[16]; + char reserved_1[24]; + + } vm[8]; + char reserved_544[3552]; +}; + +#define TOPOLOGY_CPU_BITS 64 +#define TOPOLOGY_NR_MAG 6 + +struct topology_cpu { + unsigned char reserved0[4]; + unsigned char :6; + unsigned char pp:2; + unsigned char reserved1; + unsigned short origin; + unsigned long mask[TOPOLOGY_CPU_BITS / BITS_PER_LONG]; +}; + +struct topology_container { + unsigned char reserved[7]; + unsigned char id; +}; + +union topology_entry { + unsigned char nl; + struct topology_cpu cpu; + struct topology_container container; +}; + +struct sysinfo_15_1_x { + unsigned char reserved0[2]; + unsigned short length; + unsigned char mag[TOPOLOGY_NR_MAG]; + unsigned char reserved1; + unsigned char mnest; + unsigned char reserved2[4]; + union topology_entry tle[0]; +}; + +static inline int stsi(void *sysinfo, int fc, int sel1, int sel2) +{ + register int r0 asm("0") = (fc << 28) | sel1; + register int r1 asm("1") = sel2; + + asm volatile( + " stsi 0(%2)\n" + "0: jz 2f\n" + "1: lhi %0,%3\n" + "2:\n" + EX_TABLE(0b, 1b) + : "+d" (r0) : "d" (r1), "a" (sysinfo), "K" (-ENOSYS) + : "cc", "memory"); + return r0; +} + +/* + * Service level reporting interface. + */ +struct service_level { + struct list_head list; + void (*seq_print)(struct seq_file *, struct service_level *); +}; + +int register_service_level(struct service_level *); +int unregister_service_level(struct service_level *); + +#endif /* __ASM_S390_SYSINFO_H */ diff --git a/arch/s390/include/asm/tape390.h b/arch/s390/include/asm/tape390.h new file mode 100644 index 00000000..884fba48 --- /dev/null +++ b/arch/s390/include/asm/tape390.h @@ -0,0 +1,103 @@ +/************************************************************************* + * + * tape390.h + * enables user programs to display messages and control encryption + * on s390 tape devices + * + * Copyright IBM Corp. 2001,2006 + * Author(s): Michael Holzheu <holzheu@de.ibm.com> + * + *************************************************************************/ + +#ifndef _TAPE390_H +#define _TAPE390_H + +#define TAPE390_DISPLAY _IOW('d', 1, struct display_struct) + +/* + * The TAPE390_DISPLAY ioctl calls the Load Display command + * which transfers 17 bytes of data from the channel to the subsystem: + * - 1 format control byte, and + * - two 8-byte messages + * + * Format control byte: + * 0-2: New Message Overlay + * 3: Alternate Messages + * 4: Blink Message + * 5: Display Low/High Message + * 6: Reserved + * 7: Automatic Load Request + * + */ + +typedef struct display_struct { + char cntrl; + char message1[8]; + char message2[8]; +} display_struct; + +/* + * Tape encryption support + */ + +struct tape390_crypt_info { + char capability; + char status; + char medium_status; +} __attribute__ ((packed)); + + +/* Macros for "capable" field */ +#define TAPE390_CRYPT_SUPPORTED_MASK 0x01 +#define TAPE390_CRYPT_SUPPORTED(x) \ + ((x.capability & TAPE390_CRYPT_SUPPORTED_MASK)) + +/* Macros for "status" field */ +#define TAPE390_CRYPT_ON_MASK 0x01 +#define TAPE390_CRYPT_ON(x) (((x.status) & TAPE390_CRYPT_ON_MASK)) + +/* Macros for "medium status" field */ +#define TAPE390_MEDIUM_LOADED_MASK 0x01 +#define TAPE390_MEDIUM_ENCRYPTED_MASK 0x02 +#define TAPE390_MEDIUM_ENCRYPTED(x) \ + (((x.medium_status) & TAPE390_MEDIUM_ENCRYPTED_MASK)) +#define TAPE390_MEDIUM_LOADED(x) \ + (((x.medium_status) & TAPE390_MEDIUM_LOADED_MASK)) + +/* + * The TAPE390_CRYPT_SET ioctl is used to switch on/off encryption. + * The "encryption_capable" and "tape_status" fields are ignored for this ioctl! + */ +#define TAPE390_CRYPT_SET _IOW('d', 2, struct tape390_crypt_info) + +/* + * The TAPE390_CRYPT_QUERY ioctl is used to query the encryption state. + */ +#define TAPE390_CRYPT_QUERY _IOR('d', 3, struct tape390_crypt_info) + +/* Values for "kekl1/2_type" and "kekl1/2_type_on_tape" fields */ +#define TAPE390_KEKL_TYPE_NONE 0 +#define TAPE390_KEKL_TYPE_LABEL 1 +#define TAPE390_KEKL_TYPE_HASH 2 + +struct tape390_kekl { + unsigned char type; + unsigned char type_on_tape; + char label[65]; +} __attribute__ ((packed)); + +struct tape390_kekl_pair { + struct tape390_kekl kekl[2]; +} __attribute__ ((packed)); + +/* + * The TAPE390_KEKL_SET ioctl is used to set Key Encrypting Key labels. + */ +#define TAPE390_KEKL_SET _IOW('d', 4, struct tape390_kekl_pair) + +/* + * The TAPE390_KEKL_QUERY ioctl is used to query Key Encrypting Key labels. + */ +#define TAPE390_KEKL_QUERY _IOR('d', 5, struct tape390_kekl_pair) + +#endif diff --git a/arch/s390/include/asm/termbits.h b/arch/s390/include/asm/termbits.h new file mode 100644 index 00000000..71bf6ac6 --- /dev/null +++ b/arch/s390/include/asm/termbits.h @@ -0,0 +1,6 @@ +#ifndef _ASM_S390_TERMBITS_H +#define _ASM_S390_TERMBITS_H + +#include <asm-generic/termbits.h> + +#endif diff --git a/arch/s390/include/asm/termios.h b/arch/s390/include/asm/termios.h new file mode 100644 index 00000000..bc3a35ce --- /dev/null +++ b/arch/s390/include/asm/termios.h @@ -0,0 +1,67 @@ +/* + * include/asm-s390/termios.h + * + * S390 version + * + * Derived from "include/asm-i386/termios.h" + */ + +#ifndef _S390_TERMIOS_H +#define _S390_TERMIOS_H + +#include <asm/termbits.h> +#include <asm/ioctls.h> + +struct winsize { + unsigned short ws_row; + unsigned short ws_col; + unsigned short ws_xpixel; + unsigned short ws_ypixel; +}; + +#define NCC 8 +struct termio { + unsigned short c_iflag; /* input mode flags */ + unsigned short c_oflag; /* output mode flags */ + unsigned short c_cflag; /* control mode flags */ + unsigned short c_lflag; /* local mode flags */ + unsigned char c_line; /* line discipline */ + unsigned char c_cc[NCC]; /* control characters */ +}; + +/* modem lines */ +#define TIOCM_LE 0x001 +#define TIOCM_DTR 0x002 +#define TIOCM_RTS 0x004 +#define TIOCM_ST 0x008 +#define TIOCM_SR 0x010 +#define TIOCM_CTS 0x020 +#define TIOCM_CAR 0x040 +#define TIOCM_RNG 0x080 +#define TIOCM_DSR 0x100 +#define TIOCM_CD TIOCM_CAR +#define TIOCM_RI TIOCM_RNG +#define TIOCM_OUT1 0x2000 +#define TIOCM_OUT2 0x4000 +#define TIOCM_LOOP 0x8000 + +/* ioctl (fd, TIOCSERGETLSR, &result) where result may be as below */ + +#ifdef __KERNEL__ + +/* intr=^C quit=^\ erase=del kill=^U + eof=^D vtime=\0 vmin=\1 sxtc=\0 + start=^Q stop=^S susp=^Z eol=\0 + reprint=^R discard=^U werase=^W lnext=^V + eol2=\0 +*/ +#define INIT_C_CC "\003\034\177\025\004\0\1\0\021\023\032\0\022\017\027\026\0" + +#define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios2)) +#define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios2)) + +#include <asm-generic/termios-base.h> + +#endif /* __KERNEL__ */ + +#endif /* _S390_TERMIOS_H */ diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h new file mode 100644 index 00000000..a7303815 --- /dev/null +++ b/arch/s390/include/asm/thread_info.h @@ -0,0 +1,132 @@ +/* + * include/asm-s390/thread_info.h + * + * S390 version + * Copyright (C) IBM Corp. 2002,2006 + * Author(s): Martin Schwidefsky (schwidefsky@de.ibm.com) + */ + +#ifndef _ASM_THREAD_INFO_H +#define _ASM_THREAD_INFO_H + +#ifdef __KERNEL__ + +/* + * Size of kernel stack for each process + */ +#ifndef __s390x__ +#define THREAD_ORDER 1 +#define ASYNC_ORDER 1 +#else /* __s390x__ */ +#ifndef __SMALL_STACK +#define THREAD_ORDER 2 +#define ASYNC_ORDER 2 +#else +#define THREAD_ORDER 1 +#define ASYNC_ORDER 1 +#endif +#endif /* __s390x__ */ + +#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) +#define ASYNC_SIZE (PAGE_SIZE << ASYNC_ORDER) + +#ifndef __ASSEMBLY__ +#include <asm/lowcore.h> +#include <asm/page.h> +#include <asm/processor.h> + +/* + * low level task data that entry.S needs immediate access to + * - this struct should fit entirely inside of one cache line + * - this struct shares the supervisor stack pages + * - if the contents of this structure are changed, the assembly constants must also be changed + */ +struct thread_info { + struct task_struct *task; /* main task structure */ + struct exec_domain *exec_domain; /* execution domain */ + unsigned long flags; /* low level flags */ + unsigned int cpu; /* current CPU */ + int preempt_count; /* 0 => preemptable, <0 => BUG */ + struct restart_block restart_block; + unsigned int system_call; + __u64 user_timer; + __u64 system_timer; + unsigned long last_break; /* last breaking-event-address. */ +}; + +/* + * macros/functions for gaining access to the thread information structure + */ +#define INIT_THREAD_INFO(tsk) \ +{ \ + .task = &tsk, \ + .exec_domain = &default_exec_domain, \ + .flags = 0, \ + .cpu = 0, \ + .preempt_count = INIT_PREEMPT_COUNT, \ + .restart_block = { \ + .fn = do_no_restart_syscall, \ + }, \ +} + +#define init_thread_info (init_thread_union.thread_info) +#define init_stack (init_thread_union.stack) + +/* how to get the thread information struct from C */ +static inline struct thread_info *current_thread_info(void) +{ + return (struct thread_info *) S390_lowcore.thread_info; +} + +#define THREAD_SIZE_ORDER THREAD_ORDER + +#endif + +/* + * thread information flags bit numbers + */ +#define TIF_SYSCALL 0 /* inside a system call */ +#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */ +#define TIF_SIGPENDING 2 /* signal pending */ +#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ +#define TIF_PER_TRAP 6 /* deliver sigtrap on return to user */ +#define TIF_MCCK_PENDING 7 /* machine check handling is pending */ +#define TIF_SYSCALL_TRACE 8 /* syscall trace active */ +#define TIF_SYSCALL_AUDIT 9 /* syscall auditing active */ +#define TIF_SECCOMP 10 /* secure computing */ +#define TIF_SYSCALL_TRACEPOINT 11 /* syscall tracepoint instrumentation */ +#define TIF_SIE 12 /* guest execution active */ +#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling + TIF_NEED_RESCHED */ +#define TIF_31BIT 17 /* 32bit process */ +#define TIF_MEMDIE 18 /* is terminating due to OOM killer */ +#define TIF_RESTORE_SIGMASK 19 /* restore signal mask in do_signal() */ +#define TIF_SINGLE_STEP 20 /* This task is single stepped */ + +#define _TIF_SYSCALL (1<<TIF_SYSCALL) +#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) +#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) +#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) +#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) +#define _TIF_PER_TRAP (1<<TIF_PER_TRAP) +#define _TIF_MCCK_PENDING (1<<TIF_MCCK_PENDING) +#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) +#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) +#define _TIF_SECCOMP (1<<TIF_SECCOMP) +#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT) +#define _TIF_SIE (1<<TIF_SIE) +#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) +#define _TIF_31BIT (1<<TIF_31BIT) +#define _TIF_SINGLE_STEP (1<<TIF_SINGLE_STEP) + +#ifdef CONFIG_64BIT +#define is_32bit_task() (test_thread_flag(TIF_31BIT)) +#else +#define is_32bit_task() (1) +#endif + +#endif /* __KERNEL__ */ + +#define PREEMPT_ACTIVE 0x4000000 + +#endif /* _ASM_THREAD_INFO_H */ diff --git a/arch/s390/include/asm/timer.h b/arch/s390/include/asm/timer.h new file mode 100644 index 00000000..e63069ba --- /dev/null +++ b/arch/s390/include/asm/timer.h @@ -0,0 +1,55 @@ +/* + * include/asm-s390/timer.h + * + * (C) Copyright IBM Corp. 2003,2006 + * Virtual CPU timer + * + * Author: Jan Glauber (jang@de.ibm.com) + */ + +#ifndef _ASM_S390_TIMER_H +#define _ASM_S390_TIMER_H + +#ifdef __KERNEL__ + +#include <linux/timer.h> + +#define VTIMER_MAX_SLICE (0x7ffffffffffff000LL) + +struct vtimer_list { + struct list_head entry; + + int cpu; + __u64 expires; + __u64 interval; + + void (*function)(unsigned long); + unsigned long data; +}; + +/* the vtimer value will wrap after ca. 71 years */ +struct vtimer_queue { + struct list_head list; + spinlock_t lock; + __u64 timer; /* last programmed timer */ + __u64 elapsed; /* elapsed time of timer expire values */ + __u64 idle_enter; /* cpu timer on idle enter */ + __u64 idle_exit; /* cpu timer on idle exit */ +}; + +extern void init_virt_timer(struct vtimer_list *timer); +extern void add_virt_timer(void *new); +extern void add_virt_timer_periodic(void *new); +extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires); +extern int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires); +extern int del_virt_timer(struct vtimer_list *timer); + +extern void init_cpu_vtimer(void); +extern void vtime_init(void); + +extern void vtime_stop_cpu(void); +extern void vtime_start_leave(void); + +#endif /* __KERNEL__ */ + +#endif /* _ASM_S390_TIMER_H */ diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h new file mode 100644 index 00000000..c447a27a --- /dev/null +++ b/arch/s390/include/asm/timex.h @@ -0,0 +1,140 @@ +/* + * include/asm-s390/timex.h + * + * S390 version + * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation + * + * Derived from "include/asm-i386/timex.h" + * Copyright (C) 1992, Linus Torvalds + */ + +#ifndef _ASM_S390_TIMEX_H +#define _ASM_S390_TIMEX_H + +#include <asm/lowcore.h> + +/* The value of the TOD clock for 1.1.1970. */ +#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL + +/* Inline functions for clock register access. */ +static inline int set_clock(__u64 time) +{ + int cc; + + asm volatile( + " sck %1\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (cc) : "Q" (time) : "cc"); + return cc; +} + +static inline int store_clock(__u64 *time) +{ + int cc; + + asm volatile( + " stck %1\n" + " ipm %0\n" + " srl %0,28\n" + : "=d" (cc), "=Q" (*time) : : "cc"); + return cc; +} + +static inline void set_clock_comparator(__u64 time) +{ + asm volatile("sckc %0" : : "Q" (time)); +} + +static inline void store_clock_comparator(__u64 *time) +{ + asm volatile("stckc %0" : "=Q" (*time)); +} + +void clock_comparator_work(void); + +static inline unsigned long long local_tick_disable(void) +{ + unsigned long long old; + + old = S390_lowcore.clock_comparator; + S390_lowcore.clock_comparator = -1ULL; + set_clock_comparator(S390_lowcore.clock_comparator); + return old; +} + +static inline void local_tick_enable(unsigned long long comp) +{ + S390_lowcore.clock_comparator = comp; + set_clock_comparator(S390_lowcore.clock_comparator); +} + +#define CLOCK_TICK_RATE 1193180 /* Underlying HZ */ + +typedef unsigned long long cycles_t; + +static inline unsigned long long get_clock (void) +{ + unsigned long long clk; + + asm volatile("stck %0" : "=Q" (clk) : : "cc"); + return clk; +} + +static inline void get_clock_ext(char *clk) +{ + asm volatile("stcke %0" : "=Q" (*clk) : : "cc"); +} + +static inline unsigned long long get_clock_fast(void) +{ + unsigned long long clk; + + if (MACHINE_HAS_STCKF) + asm volatile(".insn s,0xb27c0000,%0" : "=Q" (clk) : : "cc"); + else + clk = get_clock(); + return clk; +} + +static inline unsigned long long get_clock_xt(void) +{ + unsigned char clk[16]; + get_clock_ext(clk); + return *((unsigned long long *)&clk[1]); +} + +static inline cycles_t get_cycles(void) +{ + return (cycles_t) get_clock() >> 2; +} + +int get_sync_clock(unsigned long long *clock); +void init_cpu_timer(void); +unsigned long long monotonic_clock(void); + +void tod_to_timeval(__u64, struct timespec *); + +static inline +void stck_to_timespec(unsigned long long stck, struct timespec *ts) +{ + tod_to_timeval(stck - TOD_UNIX_EPOCH, ts); +} + +extern u64 sched_clock_base_cc; + +/** + * get_clock_monotonic - returns current time in clock rate units + * + * The caller must ensure that preemption is disabled. + * The clock and sched_clock_base get changed via stop_machine. + * Therefore preemption must be disabled when calling this + * function, otherwise the returned value is not guaranteed to + * be monotonic. + */ +static inline unsigned long long get_clock_monotonic(void) +{ + return get_clock_xt() - sched_clock_base_cc; +} + +#endif diff --git a/arch/s390/include/asm/tlb.h b/arch/s390/include/asm/tlb.h new file mode 100644 index 00000000..775a5eea --- /dev/null +++ b/arch/s390/include/asm/tlb.h @@ -0,0 +1,142 @@ +#ifndef _S390_TLB_H +#define _S390_TLB_H + +/* + * TLB flushing on s390 is complicated. The following requirement + * from the principles of operation is the most arduous: + * + * "A valid table entry must not be changed while it is attached + * to any CPU and may be used for translation by that CPU except to + * (1) invalidate the entry by using INVALIDATE PAGE TABLE ENTRY, + * or INVALIDATE DAT TABLE ENTRY, (2) alter bits 56-63 of a page + * table entry, or (3) make a change by means of a COMPARE AND SWAP + * AND PURGE instruction that purges the TLB." + * + * The modification of a pte of an active mm struct therefore is + * a two step process: i) invalidate the pte, ii) store the new pte. + * This is true for the page protection bit as well. + * The only possible optimization is to flush at the beginning of + * a tlb_gather_mmu cycle if the mm_struct is currently not in use. + * + * Pages used for the page tables is a different story. FIXME: more + */ + +#include <linux/mm.h> +#include <linux/pagemap.h> +#include <linux/swap.h> +#include <asm/processor.h> +#include <asm/pgalloc.h> +#include <asm/tlbflush.h> + +struct mmu_gather { + struct mm_struct *mm; + struct mmu_table_batch *batch; + unsigned int fullmm; +}; + +struct mmu_table_batch { + struct rcu_head rcu; + unsigned int nr; + void *tables[0]; +}; + +#define MAX_TABLE_BATCH \ + ((PAGE_SIZE - sizeof(struct mmu_table_batch)) / sizeof(void *)) + +extern void tlb_table_flush(struct mmu_gather *tlb); +extern void tlb_remove_table(struct mmu_gather *tlb, void *table); + +static inline void tlb_gather_mmu(struct mmu_gather *tlb, + struct mm_struct *mm, + unsigned int full_mm_flush) +{ + tlb->mm = mm; + tlb->fullmm = full_mm_flush; + tlb->batch = NULL; + if (tlb->fullmm) + __tlb_flush_mm(mm); +} + +static inline void tlb_flush_mmu(struct mmu_gather *tlb) +{ + tlb_table_flush(tlb); +} + +static inline void tlb_finish_mmu(struct mmu_gather *tlb, + unsigned long start, unsigned long end) +{ + tlb_table_flush(tlb); +} + +/* + * Release the page cache reference for a pte removed by + * tlb_ptep_clear_flush. In both flush modes the tlb for a page cache page + * has already been freed, so just do free_page_and_swap_cache. + */ +static inline int __tlb_remove_page(struct mmu_gather *tlb, struct page *page) +{ + free_page_and_swap_cache(page); + return 1; /* avoid calling tlb_flush_mmu */ +} + +static inline void tlb_remove_page(struct mmu_gather *tlb, struct page *page) +{ + free_page_and_swap_cache(page); +} + +/* + * pte_free_tlb frees a pte table and clears the CRSTE for the + * page table from the tlb. + */ +static inline void pte_free_tlb(struct mmu_gather *tlb, pgtable_t pte, + unsigned long address) +{ + if (!tlb->fullmm) + return page_table_free_rcu(tlb, (unsigned long *) pte); + page_table_free(tlb->mm, (unsigned long *) pte); +} + +/* + * pmd_free_tlb frees a pmd table and clears the CRSTE for the + * segment table entry from the tlb. + * If the mm uses a two level page table the single pmd is freed + * as the pgd. pmd_free_tlb checks the asce_limit against 2GB + * to avoid the double free of the pmd in this case. + */ +static inline void pmd_free_tlb(struct mmu_gather *tlb, pmd_t *pmd, + unsigned long address) +{ +#ifdef __s390x__ + if (tlb->mm->context.asce_limit <= (1UL << 31)) + return; + if (!tlb->fullmm) + return tlb_remove_table(tlb, pmd); + crst_table_free(tlb->mm, (unsigned long *) pmd); +#endif +} + +/* + * pud_free_tlb frees a pud table and clears the CRSTE for the + * region third table entry from the tlb. + * If the mm uses a three level page table the single pud is freed + * as the pgd. pud_free_tlb checks the asce_limit against 4TB + * to avoid the double free of the pud in this case. + */ +static inline void pud_free_tlb(struct mmu_gather *tlb, pud_t *pud, + unsigned long address) +{ +#ifdef __s390x__ + if (tlb->mm->context.asce_limit <= (1UL << 42)) + return; + if (!tlb->fullmm) + return tlb_remove_table(tlb, pud); + crst_table_free(tlb->mm, (unsigned long *) pud); +#endif +} + +#define tlb_start_vma(tlb, vma) do { } while (0) +#define tlb_end_vma(tlb, vma) do { } while (0) +#define tlb_remove_tlb_entry(tlb, ptep, addr) do { } while (0) +#define tlb_migrate_finish(mm) do { } while (0) + +#endif /* _S390_TLB_H */ diff --git a/arch/s390/include/asm/tlbflush.h b/arch/s390/include/asm/tlbflush.h new file mode 100644 index 00000000..1d8648cf --- /dev/null +++ b/arch/s390/include/asm/tlbflush.h @@ -0,0 +1,140 @@ +#ifndef _S390_TLBFLUSH_H +#define _S390_TLBFLUSH_H + +#include <linux/mm.h> +#include <linux/sched.h> +#include <asm/processor.h> +#include <asm/pgalloc.h> + +/* + * Flush all tlb entries on the local cpu. + */ +static inline void __tlb_flush_local(void) +{ + asm volatile("ptlb" : : : "memory"); +} + +#ifdef CONFIG_SMP +/* + * Flush all tlb entries on all cpus. + */ +void smp_ptlb_all(void); + +static inline void __tlb_flush_global(void) +{ + register unsigned long reg2 asm("2"); + register unsigned long reg3 asm("3"); + register unsigned long reg4 asm("4"); + long dummy; + +#ifndef __s390x__ + if (!MACHINE_HAS_CSP) { + smp_ptlb_all(); + return; + } +#endif /* __s390x__ */ + + dummy = 0; + reg2 = reg3 = 0; + reg4 = ((unsigned long) &dummy) + 1; + asm volatile( + " csp %0,%2" + : : "d" (reg2), "d" (reg3), "d" (reg4), "m" (dummy) : "cc" ); +} + +static inline void __tlb_flush_full(struct mm_struct *mm) +{ + cpumask_t local_cpumask; + + preempt_disable(); + /* + * If the process only ran on the local cpu, do a local flush. + */ + cpumask_copy(&local_cpumask, cpumask_of(smp_processor_id())); + if (cpumask_equal(mm_cpumask(mm), &local_cpumask)) + __tlb_flush_local(); + else + __tlb_flush_global(); + preempt_enable(); +} +#else +#define __tlb_flush_full(mm) __tlb_flush_local() +#define __tlb_flush_global() __tlb_flush_local() +#endif + +/* + * Flush all tlb entries of a page table on all cpus. + */ +static inline void __tlb_flush_idte(unsigned long asce) +{ + asm volatile( + " .insn rrf,0xb98e0000,0,%0,%1,0" + : : "a" (2048), "a" (asce) : "cc" ); +} + +static inline void __tlb_flush_mm(struct mm_struct * mm) +{ + if (unlikely(cpumask_empty(mm_cpumask(mm)))) + return; + /* + * If the machine has IDTE we prefer to do a per mm flush + * on all cpus instead of doing a local flush if the mm + * only ran on the local cpu. + */ + if (MACHINE_HAS_IDTE && list_empty(&mm->context.gmap_list)) + __tlb_flush_idte((unsigned long) mm->pgd | + mm->context.asce_bits); + else + __tlb_flush_full(mm); +} + +static inline void __tlb_flush_mm_cond(struct mm_struct * mm) +{ + spin_lock(&mm->page_table_lock); + if (mm->context.flush_mm) { + __tlb_flush_mm(mm); + mm->context.flush_mm = 0; + } + spin_unlock(&mm->page_table_lock); +} + +/* + * TLB flushing: + * flush_tlb() - flushes the current mm struct TLBs + * flush_tlb_all() - flushes all processes TLBs + * flush_tlb_mm(mm) - flushes the specified mm context TLB's + * flush_tlb_page(vma, vmaddr) - flushes one page + * flush_tlb_range(vma, start, end) - flushes a range of pages + * flush_tlb_kernel_range(start, end) - flushes a range of kernel pages + */ + +/* + * flush_tlb_mm goes together with ptep_set_wrprotect for the + * copy_page_range operation and flush_tlb_range is related to + * ptep_get_and_clear for change_protection. ptep_set_wrprotect and + * ptep_get_and_clear do not flush the TLBs directly if the mm has + * only one user. At the end of the update the flush_tlb_mm and + * flush_tlb_range functions need to do the flush. + */ +#define flush_tlb() do { } while (0) +#define flush_tlb_all() do { } while (0) +#define flush_tlb_page(vma, addr) do { } while (0) + +static inline void flush_tlb_mm(struct mm_struct *mm) +{ + __tlb_flush_mm_cond(mm); +} + +static inline void flush_tlb_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end) +{ + __tlb_flush_mm_cond(vma->vm_mm); +} + +static inline void flush_tlb_kernel_range(unsigned long start, + unsigned long end) +{ + __tlb_flush_mm(&init_mm); +} + +#endif /* _S390_TLBFLUSH_H */ diff --git a/arch/s390/include/asm/topology.h b/arch/s390/include/asm/topology.h new file mode 100644 index 00000000..0837de80 --- /dev/null +++ b/arch/s390/include/asm/topology.h @@ -0,0 +1,84 @@ +#ifndef _ASM_S390_TOPOLOGY_H +#define _ASM_S390_TOPOLOGY_H + +#include <linux/cpumask.h> +#include <asm/sysinfo.h> + +struct cpu; + +#ifdef CONFIG_SCHED_BOOK + +extern unsigned char cpu_core_id[NR_CPUS]; +extern cpumask_t cpu_core_map[NR_CPUS]; + +static inline const struct cpumask *cpu_coregroup_mask(int cpu) +{ + return &cpu_core_map[cpu]; +} + +#define topology_core_id(cpu) (cpu_core_id[cpu]) +#define topology_core_cpumask(cpu) (&cpu_core_map[cpu]) +#define mc_capable() (1) + +extern unsigned char cpu_book_id[NR_CPUS]; +extern cpumask_t cpu_book_map[NR_CPUS]; + +static inline const struct cpumask *cpu_book_mask(int cpu) +{ + return &cpu_book_map[cpu]; +} + +#define topology_book_id(cpu) (cpu_book_id[cpu]) +#define topology_book_cpumask(cpu) (&cpu_book_map[cpu]) + +int topology_cpu_init(struct cpu *); +int topology_set_cpu_management(int fc); +void topology_schedule_update(void); +void store_topology(struct sysinfo_15_1_x *info); +void topology_expect_change(void); + +#else /* CONFIG_SCHED_BOOK */ + +static inline void topology_schedule_update(void) { } +static inline int topology_cpu_init(struct cpu *cpu) { return 0; } +static inline void topology_expect_change(void) { } + +#endif /* CONFIG_SCHED_BOOK */ + +#define POLARIZATION_UNKNOWN (-1) +#define POLARIZATION_HRZ (0) +#define POLARIZATION_VL (1) +#define POLARIZATION_VM (2) +#define POLARIZATION_VH (3) + +extern int cpu_polarization[]; + +static inline void cpu_set_polarization(int cpu, int val) +{ +#ifdef CONFIG_SCHED_BOOK + cpu_polarization[cpu] = val; +#endif +} + +static inline int cpu_read_polarization(int cpu) +{ +#ifdef CONFIG_SCHED_BOOK + return cpu_polarization[cpu]; +#else + return POLARIZATION_HRZ; +#endif +} + +#ifdef CONFIG_SCHED_BOOK +void s390_init_cpu_topology(void); +#else +static inline void s390_init_cpu_topology(void) +{ +}; +#endif + +#define SD_BOOK_INIT SD_CPU_INIT + +#include <asm-generic/topology.h> + +#endif /* _ASM_S390_TOPOLOGY_H */ diff --git a/arch/s390/include/asm/types.h b/arch/s390/include/asm/types.h new file mode 100644 index 00000000..05ebbcdb --- /dev/null +++ b/arch/s390/include/asm/types.h @@ -0,0 +1,43 @@ +/* + * include/asm-s390/types.h + * + * S390 version + * + * Derived from "include/asm-i386/types.h" + */ + +#ifndef _S390_TYPES_H +#define _S390_TYPES_H + +#include <asm-generic/int-ll64.h> + +#ifndef __ASSEMBLY__ + +/* A address type so that arithmetic can be done on it & it can be upgraded to + 64 bit when necessary +*/ +typedef unsigned long addr_t; +typedef __signed__ long saddr_t; + +#endif /* __ASSEMBLY__ */ + +/* + * These aren't exported outside the kernel to avoid name space clashes + */ +#ifdef __KERNEL__ + +#ifndef __ASSEMBLY__ + +#ifndef __s390x__ +typedef union { + unsigned long long pair; + struct { + unsigned long even; + unsigned long odd; + } subreg; +} register_pair; + +#endif /* ! __s390x__ */ +#endif /* __ASSEMBLY__ */ +#endif /* __KERNEL__ */ +#endif /* _S390_TYPES_H */ diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h new file mode 100644 index 00000000..8f2cada4 --- /dev/null +++ b/arch/s390/include/asm/uaccess.h @@ -0,0 +1,384 @@ +/* + * include/asm-s390/uaccess.h + * + * S390 version + * Copyright (C) 1999,2000 IBM Deutschland Entwicklung GmbH, IBM Corporation + * Author(s): Hartmut Penner (hp@de.ibm.com), + * Martin Schwidefsky (schwidefsky@de.ibm.com) + * + * Derived from "include/asm-i386/uaccess.h" + */ +#ifndef __S390_UACCESS_H +#define __S390_UACCESS_H + +/* + * User space memory access functions + */ +#include <linux/sched.h> +#include <linux/errno.h> +#include <asm/ctl_reg.h> + +#define VERIFY_READ 0 +#define VERIFY_WRITE 1 + + +/* + * The fs value determines whether argument validity checking should be + * performed or not. If get_fs() == USER_DS, checking is performed, with + * get_fs() == KERNEL_DS, checking is bypassed. + * + * For historical reasons, these macros are grossly misnamed. + */ + +#define MAKE_MM_SEG(a) ((mm_segment_t) { (a) }) + + +#define KERNEL_DS MAKE_MM_SEG(0) +#define USER_DS MAKE_MM_SEG(1) + +#define get_ds() (KERNEL_DS) +#define get_fs() (current->thread.mm_segment) + +#define set_fs(x) \ +({ \ + unsigned long __pto; \ + current->thread.mm_segment = (x); \ + __pto = current->thread.mm_segment.ar4 ? \ + S390_lowcore.user_asce : S390_lowcore.kernel_asce; \ + __ctl_load(__pto, 7, 7); \ +}) + +#define segment_eq(a,b) ((a).ar4 == (b).ar4) + +#define __access_ok(addr, size) \ +({ \ + __chk_user_ptr(addr); \ + 1; \ +}) + +#define access_ok(type, addr, size) __access_ok(addr, size) + +/* + * The exception table consists of pairs of addresses: the first is the + * address of an instruction that is allowed to fault, and the second is + * the address at which the program should continue. No registers are + * modified, so it is entirely up to the continuation code to figure out + * what to do. + * + * All the routines below use bits of fixup code that are out of line + * with the main instruction path. This means when everything is well, + * we don't even have to jump over them. Further, they do not intrude + * on our cache or tlb entries. + */ + +struct exception_table_entry +{ + unsigned long insn, fixup; +}; + +struct uaccess_ops { + size_t (*copy_from_user)(size_t, const void __user *, void *); + size_t (*copy_from_user_small)(size_t, const void __user *, void *); + size_t (*copy_to_user)(size_t, void __user *, const void *); + size_t (*copy_to_user_small)(size_t, void __user *, const void *); + size_t (*copy_in_user)(size_t, void __user *, const void __user *); + size_t (*clear_user)(size_t, void __user *); + size_t (*strnlen_user)(size_t, const char __user *); + size_t (*strncpy_from_user)(size_t, const char __user *, char *); + int (*futex_atomic_op)(int op, u32 __user *, int oparg, int *old); + int (*futex_atomic_cmpxchg)(u32 *, u32 __user *, u32 old, u32 new); +}; + +extern struct uaccess_ops uaccess; +extern struct uaccess_ops uaccess_std; +extern struct uaccess_ops uaccess_mvcos; +extern struct uaccess_ops uaccess_mvcos_switch; +extern struct uaccess_ops uaccess_pt; + +extern int __handle_fault(unsigned long, unsigned long, int); + +static inline int __put_user_fn(size_t size, void __user *ptr, void *x) +{ + size = uaccess.copy_to_user_small(size, ptr, x); + return size ? -EFAULT : size; +} + +static inline int __get_user_fn(size_t size, const void __user *ptr, void *x) +{ + size = uaccess.copy_from_user_small(size, ptr, x); + return size ? -EFAULT : size; +} + +/* + * These are the main single-value transfer routines. They automatically + * use the right size if we just have the right pointer type. + */ +#define __put_user(x, ptr) \ +({ \ + __typeof__(*(ptr)) __x = (x); \ + int __pu_err = -EFAULT; \ + __chk_user_ptr(ptr); \ + switch (sizeof (*(ptr))) { \ + case 1: \ + case 2: \ + case 4: \ + case 8: \ + __pu_err = __put_user_fn(sizeof (*(ptr)), \ + ptr, &__x); \ + break; \ + default: \ + __put_user_bad(); \ + break; \ + } \ + __pu_err; \ +}) + +#define put_user(x, ptr) \ +({ \ + might_fault(); \ + __put_user(x, ptr); \ +}) + + +extern int __put_user_bad(void) __attribute__((noreturn)); + +#define __get_user(x, ptr) \ +({ \ + int __gu_err = -EFAULT; \ + __chk_user_ptr(ptr); \ + switch (sizeof(*(ptr))) { \ + case 1: { \ + unsigned char __x; \ + __gu_err = __get_user_fn(sizeof (*(ptr)), \ + ptr, &__x); \ + (x) = *(__force __typeof__(*(ptr)) *) &__x; \ + break; \ + }; \ + case 2: { \ + unsigned short __x; \ + __gu_err = __get_user_fn(sizeof (*(ptr)), \ + ptr, &__x); \ + (x) = *(__force __typeof__(*(ptr)) *) &__x; \ + break; \ + }; \ + case 4: { \ + unsigned int __x; \ + __gu_err = __get_user_fn(sizeof (*(ptr)), \ + ptr, &__x); \ + (x) = *(__force __typeof__(*(ptr)) *) &__x; \ + break; \ + }; \ + case 8: { \ + unsigned long long __x; \ + __gu_err = __get_user_fn(sizeof (*(ptr)), \ + ptr, &__x); \ + (x) = *(__force __typeof__(*(ptr)) *) &__x; \ + break; \ + }; \ + default: \ + __get_user_bad(); \ + break; \ + } \ + __gu_err; \ +}) + +#define get_user(x, ptr) \ +({ \ + might_fault(); \ + __get_user(x, ptr); \ +}) + +extern int __get_user_bad(void) __attribute__((noreturn)); + +#define __put_user_unaligned __put_user +#define __get_user_unaligned __get_user + +/** + * __copy_to_user: - Copy a block of data into user space, with less checking. + * @to: Destination address, in user space. + * @from: Source address, in kernel space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from kernel space to user space. Caller must check + * the specified block with access_ok() before calling this function. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + */ +static inline unsigned long __must_check +__copy_to_user(void __user *to, const void *from, unsigned long n) +{ + if (__builtin_constant_p(n) && (n <= 256)) + return uaccess.copy_to_user_small(n, to, from); + else + return uaccess.copy_to_user(n, to, from); +} + +#define __copy_to_user_inatomic __copy_to_user +#define __copy_from_user_inatomic __copy_from_user + +/** + * copy_to_user: - Copy a block of data into user space. + * @to: Destination address, in user space. + * @from: Source address, in kernel space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from kernel space to user space. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + */ +static inline unsigned long __must_check +copy_to_user(void __user *to, const void *from, unsigned long n) +{ + might_fault(); + if (access_ok(VERIFY_WRITE, to, n)) + n = __copy_to_user(to, from, n); + return n; +} + +/** + * __copy_from_user: - Copy a block of data from user space, with less checking. + * @to: Destination address, in kernel space. + * @from: Source address, in user space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from user space to kernel space. Caller must check + * the specified block with access_ok() before calling this function. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + * + * If some data could not be copied, this function will pad the copied + * data to the requested size using zero bytes. + */ +static inline unsigned long __must_check +__copy_from_user(void *to, const void __user *from, unsigned long n) +{ + if (__builtin_constant_p(n) && (n <= 256)) + return uaccess.copy_from_user_small(n, from, to); + else + return uaccess.copy_from_user(n, from, to); +} + +extern void copy_from_user_overflow(void) +#ifdef CONFIG_DEBUG_STRICT_USER_COPY_CHECKS +__compiletime_warning("copy_from_user() buffer size is not provably correct") +#endif +; + +/** + * copy_from_user: - Copy a block of data from user space. + * @to: Destination address, in kernel space. + * @from: Source address, in user space. + * @n: Number of bytes to copy. + * + * Context: User context only. This function may sleep. + * + * Copy data from user space to kernel space. + * + * Returns number of bytes that could not be copied. + * On success, this will be zero. + * + * If some data could not be copied, this function will pad the copied + * data to the requested size using zero bytes. + */ +static inline unsigned long __must_check +copy_from_user(void *to, const void __user *from, unsigned long n) +{ + unsigned int sz = __compiletime_object_size(to); + + might_fault(); + if (unlikely(sz != -1 && sz < n)) { + copy_from_user_overflow(); + return n; + } + if (access_ok(VERIFY_READ, from, n)) + n = __copy_from_user(to, from, n); + else + memset(to, 0, n); + return n; +} + +static inline unsigned long __must_check +__copy_in_user(void __user *to, const void __user *from, unsigned long n) +{ + return uaccess.copy_in_user(n, to, from); +} + +static inline unsigned long __must_check +copy_in_user(void __user *to, const void __user *from, unsigned long n) +{ + might_fault(); + if (__access_ok(from,n) && __access_ok(to,n)) + n = __copy_in_user(to, from, n); + return n; +} + +/* + * Copy a null terminated string from userspace. + */ +static inline long __must_check +strncpy_from_user(char *dst, const char __user *src, long count) +{ + long res = -EFAULT; + might_fault(); + if (access_ok(VERIFY_READ, src, 1)) + res = uaccess.strncpy_from_user(count, src, dst); + return res; +} + +static inline unsigned long +strnlen_user(const char __user * src, unsigned long n) +{ + might_fault(); + return uaccess.strnlen_user(n, src); +} + +/** + * strlen_user: - Get the size of a string in user space. + * @str: The string to measure. + * + * Context: User context only. This function may sleep. + * + * Get the size of a NUL-terminated string in user space. + * + * Returns the size of the string INCLUDING the terminating NUL. + * On exception, returns 0. + * + * If there is a limit on the length of a valid string, you may wish to + * consider using strnlen_user() instead. + */ +#define strlen_user(str) strnlen_user(str, ~0UL) + +/* + * Zero Userspace + */ + +static inline unsigned long __must_check +__clear_user(void __user *to, unsigned long n) +{ + return uaccess.clear_user(n, to); +} + +static inline unsigned long __must_check +clear_user(void __user *to, unsigned long n) +{ + might_fault(); + if (access_ok(VERIFY_WRITE, to, n)) + n = uaccess.clear_user(n, to); + return n; +} + +extern int memcpy_real(void *, void *, size_t); +extern void copy_to_absolute_zero(void *dest, void *src, size_t count); +extern int copy_to_user_real(void __user *dest, void *src, size_t count); +extern int copy_from_user_real(void *dest, void __user *src, size_t count); + +#endif /* __S390_UACCESS_H */ diff --git a/arch/s390/include/asm/ucontext.h b/arch/s390/include/asm/ucontext.h new file mode 100644 index 00000000..cfb874e6 --- /dev/null +++ b/arch/s390/include/asm/ucontext.h @@ -0,0 +1,35 @@ +/* + * include/asm-s390/ucontext.h + * + * S390 version + * + * Derived from "include/asm-i386/ucontext.h" + */ + +#ifndef _ASM_S390_UCONTEXT_H +#define _ASM_S390_UCONTEXT_H + +#define UC_EXTENDED 0x00000001 + +#ifndef __s390x__ + +struct ucontext_extended { + unsigned long uc_flags; + struct ucontext *uc_link; + stack_t uc_stack; + _sigregs uc_mcontext; + unsigned long uc_sigmask[2]; + unsigned long uc_gprs_high[16]; +}; + +#endif + +struct ucontext { + unsigned long uc_flags; + struct ucontext *uc_link; + stack_t uc_stack; + _sigregs uc_mcontext; + sigset_t uc_sigmask; /* mask last for extensibility */ +}; + +#endif /* !_ASM_S390_UCONTEXT_H */ diff --git a/arch/s390/include/asm/unaligned.h b/arch/s390/include/asm/unaligned.h new file mode 100644 index 00000000..da9627af --- /dev/null +++ b/arch/s390/include/asm/unaligned.h @@ -0,0 +1,13 @@ +#ifndef _ASM_S390_UNALIGNED_H +#define _ASM_S390_UNALIGNED_H + +/* + * The S390 can do unaligned accesses itself. + */ +#include <linux/unaligned/access_ok.h> +#include <linux/unaligned/generic.h> + +#define get_unaligned __get_unaligned_be +#define put_unaligned __put_unaligned_be + +#endif /* _ASM_S390_UNALIGNED_H */ diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h new file mode 100644 index 00000000..8a8008fe --- /dev/null +++ b/arch/s390/include/asm/unistd.h @@ -0,0 +1,431 @@ +/* + * include/asm-s390/unistd.h + * + * S390 version + * + * Derived from "include/asm-i386/unistd.h" + */ + +#ifndef _ASM_S390_UNISTD_H_ +#define _ASM_S390_UNISTD_H_ + +/* + * This file contains the system call numbers. + */ + +#define __NR_exit 1 +#define __NR_fork 2 +#define __NR_read 3 +#define __NR_write 4 +#define __NR_open 5 +#define __NR_close 6 +#define __NR_restart_syscall 7 +#define __NR_creat 8 +#define __NR_link 9 +#define __NR_unlink 10 +#define __NR_execve 11 +#define __NR_chdir 12 +#define __NR_mknod 14 +#define __NR_chmod 15 +#define __NR_lseek 19 +#define __NR_getpid 20 +#define __NR_mount 21 +#define __NR_umount 22 +#define __NR_ptrace 26 +#define __NR_alarm 27 +#define __NR_pause 29 +#define __NR_utime 30 +#define __NR_access 33 +#define __NR_nice 34 +#define __NR_sync 36 +#define __NR_kill 37 +#define __NR_rename 38 +#define __NR_mkdir 39 +#define __NR_rmdir 40 +#define __NR_dup 41 +#define __NR_pipe 42 +#define __NR_times 43 +#define __NR_brk 45 +#define __NR_signal 48 +#define __NR_acct 51 +#define __NR_umount2 52 +#define __NR_ioctl 54 +#define __NR_fcntl 55 +#define __NR_setpgid 57 +#define __NR_umask 60 +#define __NR_chroot 61 +#define __NR_ustat 62 +#define __NR_dup2 63 +#define __NR_getppid 64 +#define __NR_getpgrp 65 +#define __NR_setsid 66 +#define __NR_sigaction 67 +#define __NR_sigsuspend 72 +#define __NR_sigpending 73 +#define __NR_sethostname 74 +#define __NR_setrlimit 75 +#define __NR_getrusage 77 +#define __NR_gettimeofday 78 +#define __NR_settimeofday 79 +#define __NR_symlink 83 +#define __NR_readlink 85 +#define __NR_uselib 86 +#define __NR_swapon 87 +#define __NR_reboot 88 +#define __NR_readdir 89 +#define __NR_mmap 90 +#define __NR_munmap 91 +#define __NR_truncate 92 +#define __NR_ftruncate 93 +#define __NR_fchmod 94 +#define __NR_getpriority 96 +#define __NR_setpriority 97 +#define __NR_statfs 99 +#define __NR_fstatfs 100 +#define __NR_socketcall 102 +#define __NR_syslog 103 +#define __NR_setitimer 104 +#define __NR_getitimer 105 +#define __NR_stat 106 +#define __NR_lstat 107 +#define __NR_fstat 108 +#define __NR_lookup_dcookie 110 +#define __NR_vhangup 111 +#define __NR_idle 112 +#define __NR_wait4 114 +#define __NR_swapoff 115 +#define __NR_sysinfo 116 +#define __NR_ipc 117 +#define __NR_fsync 118 +#define __NR_sigreturn 119 +#define __NR_clone 120 +#define __NR_setdomainname 121 +#define __NR_uname 122 +#define __NR_adjtimex 124 +#define __NR_mprotect 125 +#define __NR_sigprocmask 126 +#define __NR_create_module 127 +#define __NR_init_module 128 +#define __NR_delete_module 129 +#define __NR_get_kernel_syms 130 +#define __NR_quotactl 131 +#define __NR_getpgid 132 +#define __NR_fchdir 133 +#define __NR_bdflush 134 +#define __NR_sysfs 135 +#define __NR_personality 136 +#define __NR_afs_syscall 137 /* Syscall for Andrew File System */ +#define __NR_getdents 141 +#define __NR_flock 143 +#define __NR_msync 144 +#define __NR_readv 145 +#define __NR_writev 146 +#define __NR_getsid 147 +#define __NR_fdatasync 148 +#define __NR__sysctl 149 +#define __NR_mlock 150 +#define __NR_munlock 151 +#define __NR_mlockall 152 +#define __NR_munlockall 153 +#define __NR_sched_setparam 154 +#define __NR_sched_getparam 155 +#define __NR_sched_setscheduler 156 +#define __NR_sched_getscheduler 157 +#define __NR_sched_yield 158 +#define __NR_sched_get_priority_max 159 +#define __NR_sched_get_priority_min 160 +#define __NR_sched_rr_get_interval 161 +#define __NR_nanosleep 162 +#define __NR_mremap 163 +#define __NR_query_module 167 +#define __NR_poll 168 +#define __NR_nfsservctl 169 +#define __NR_prctl 172 +#define __NR_rt_sigreturn 173 +#define __NR_rt_sigaction 174 +#define __NR_rt_sigprocmask 175 +#define __NR_rt_sigpending 176 +#define __NR_rt_sigtimedwait 177 +#define __NR_rt_sigqueueinfo 178 +#define __NR_rt_sigsuspend 179 +#define __NR_pread64 180 +#define __NR_pwrite64 181 +#define __NR_getcwd 183 +#define __NR_capget 184 +#define __NR_capset 185 +#define __NR_sigaltstack 186 +#define __NR_sendfile 187 +#define __NR_getpmsg 188 +#define __NR_putpmsg 189 +#define __NR_vfork 190 +#define __NR_pivot_root 217 +#define __NR_mincore 218 +#define __NR_madvise 219 +#define __NR_getdents64 220 +#define __NR_readahead 222 +#define __NR_setxattr 224 +#define __NR_lsetxattr 225 +#define __NR_fsetxattr 226 +#define __NR_getxattr 227 +#define __NR_lgetxattr 228 +#define __NR_fgetxattr 229 +#define __NR_listxattr 230 +#define __NR_llistxattr 231 +#define __NR_flistxattr 232 +#define __NR_removexattr 233 +#define __NR_lremovexattr 234 +#define __NR_fremovexattr 235 +#define __NR_gettid 236 +#define __NR_tkill 237 +#define __NR_futex 238 +#define __NR_sched_setaffinity 239 +#define __NR_sched_getaffinity 240 +#define __NR_tgkill 241 +/* Number 242 is reserved for tux */ +#define __NR_io_setup 243 +#define __NR_io_destroy 244 +#define __NR_io_getevents 245 +#define __NR_io_submit 246 +#define __NR_io_cancel 247 +#define __NR_exit_group 248 +#define __NR_epoll_create 249 +#define __NR_epoll_ctl 250 +#define __NR_epoll_wait 251 +#define __NR_set_tid_address 252 +#define __NR_fadvise64 253 +#define __NR_timer_create 254 +#define __NR_timer_settime (__NR_timer_create+1) +#define __NR_timer_gettime (__NR_timer_create+2) +#define __NR_timer_getoverrun (__NR_timer_create+3) +#define __NR_timer_delete (__NR_timer_create+4) +#define __NR_clock_settime (__NR_timer_create+5) +#define __NR_clock_gettime (__NR_timer_create+6) +#define __NR_clock_getres (__NR_timer_create+7) +#define __NR_clock_nanosleep (__NR_timer_create+8) +/* Number 263 is reserved for vserver */ +#define __NR_statfs64 265 +#define __NR_fstatfs64 266 +#define __NR_remap_file_pages 267 +/* Number 268 is reserved for new sys_mbind */ +/* Number 269 is reserved for new sys_get_mempolicy */ +/* Number 270 is reserved for new sys_set_mempolicy */ +#define __NR_mq_open 271 +#define __NR_mq_unlink 272 +#define __NR_mq_timedsend 273 +#define __NR_mq_timedreceive 274 +#define __NR_mq_notify 275 +#define __NR_mq_getsetattr 276 +#define __NR_kexec_load 277 +#define __NR_add_key 278 +#define __NR_request_key 279 +#define __NR_keyctl 280 +#define __NR_waitid 281 +#define __NR_ioprio_set 282 +#define __NR_ioprio_get 283 +#define __NR_inotify_init 284 +#define __NR_inotify_add_watch 285 +#define __NR_inotify_rm_watch 286 +/* Number 287 is reserved for new sys_migrate_pages */ +#define __NR_openat 288 +#define __NR_mkdirat 289 +#define __NR_mknodat 290 +#define __NR_fchownat 291 +#define __NR_futimesat 292 +#define __NR_unlinkat 294 +#define __NR_renameat 295 +#define __NR_linkat 296 +#define __NR_symlinkat 297 +#define __NR_readlinkat 298 +#define __NR_fchmodat 299 +#define __NR_faccessat 300 +#define __NR_pselect6 301 +#define __NR_ppoll 302 +#define __NR_unshare 303 +#define __NR_set_robust_list 304 +#define __NR_get_robust_list 305 +#define __NR_splice 306 +#define __NR_sync_file_range 307 +#define __NR_tee 308 +#define __NR_vmsplice 309 +/* Number 310 is reserved for new sys_move_pages */ +#define __NR_getcpu 311 +#define __NR_epoll_pwait 312 +#define __NR_utimes 313 +#define __NR_fallocate 314 +#define __NR_utimensat 315 +#define __NR_signalfd 316 +#define __NR_timerfd 317 +#define __NR_eventfd 318 +#define __NR_timerfd_create 319 +#define __NR_timerfd_settime 320 +#define __NR_timerfd_gettime 321 +#define __NR_signalfd4 322 +#define __NR_eventfd2 323 +#define __NR_inotify_init1 324 +#define __NR_pipe2 325 +#define __NR_dup3 326 +#define __NR_epoll_create1 327 +#define __NR_preadv 328 +#define __NR_pwritev 329 +#define __NR_rt_tgsigqueueinfo 330 +#define __NR_perf_event_open 331 +#define __NR_fanotify_init 332 +#define __NR_fanotify_mark 333 +#define __NR_prlimit64 334 +#define __NR_name_to_handle_at 335 +#define __NR_open_by_handle_at 336 +#define __NR_clock_adjtime 337 +#define __NR_syncfs 338 +#define __NR_setns 339 +#define __NR_process_vm_readv 340 +#define __NR_process_vm_writev 341 +#define NR_syscalls 342 + +/* + * There are some system calls that are not present on 64 bit, some + * have a different name although they do the same (e.g. __NR_chown32 + * is __NR_chown on 64 bit). + */ +#ifndef __s390x__ + +#define __NR_time 13 +#define __NR_lchown 16 +#define __NR_setuid 23 +#define __NR_getuid 24 +#define __NR_stime 25 +#define __NR_setgid 46 +#define __NR_getgid 47 +#define __NR_geteuid 49 +#define __NR_getegid 50 +#define __NR_setreuid 70 +#define __NR_setregid 71 +#define __NR_getrlimit 76 +#define __NR_getgroups 80 +#define __NR_setgroups 81 +#define __NR_fchown 95 +#define __NR_ioperm 101 +#define __NR_setfsuid 138 +#define __NR_setfsgid 139 +#define __NR__llseek 140 +#define __NR__newselect 142 +#define __NR_setresuid 164 +#define __NR_getresuid 165 +#define __NR_setresgid 170 +#define __NR_getresgid 171 +#define __NR_chown 182 +#define __NR_ugetrlimit 191 /* SuS compliant getrlimit */ +#define __NR_mmap2 192 +#define __NR_truncate64 193 +#define __NR_ftruncate64 194 +#define __NR_stat64 195 +#define __NR_lstat64 196 +#define __NR_fstat64 197 +#define __NR_lchown32 198 +#define __NR_getuid32 199 +#define __NR_getgid32 200 +#define __NR_geteuid32 201 +#define __NR_getegid32 202 +#define __NR_setreuid32 203 +#define __NR_setregid32 204 +#define __NR_getgroups32 205 +#define __NR_setgroups32 206 +#define __NR_fchown32 207 +#define __NR_setresuid32 208 +#define __NR_getresuid32 209 +#define __NR_setresgid32 210 +#define __NR_getresgid32 211 +#define __NR_chown32 212 +#define __NR_setuid32 213 +#define __NR_setgid32 214 +#define __NR_setfsuid32 215 +#define __NR_setfsgid32 216 +#define __NR_fcntl64 221 +#define __NR_sendfile64 223 +#define __NR_fadvise64_64 264 +#define __NR_fstatat64 293 + +#else + +#define __NR_select 142 +#define __NR_getrlimit 191 /* SuS compliant getrlimit */ +#define __NR_lchown 198 +#define __NR_getuid 199 +#define __NR_getgid 200 +#define __NR_geteuid 201 +#define __NR_getegid 202 +#define __NR_setreuid 203 +#define __NR_setregid 204 +#define __NR_getgroups 205 +#define __NR_setgroups 206 +#define __NR_fchown 207 +#define __NR_setresuid 208 +#define __NR_getresuid 209 +#define __NR_setresgid 210 +#define __NR_getresgid 211 +#define __NR_chown 212 +#define __NR_setuid 213 +#define __NR_setgid 214 +#define __NR_setfsuid 215 +#define __NR_setfsgid 216 +#define __NR_newfstatat 293 + +#endif + +#ifdef __KERNEL__ + +#ifndef CONFIG_64BIT +#define __IGNORE_select +#else +#define __IGNORE_time +#endif + +/* Ignore NUMA system calls. Not wired up on s390. */ +#define __IGNORE_mbind +#define __IGNORE_get_mempolicy +#define __IGNORE_set_mempolicy +#define __IGNORE_migrate_pages +#define __IGNORE_move_pages + +/* Ignore system calls that are also reachable via sys_socket */ +#define __IGNORE_recvmmsg +#define __IGNORE_sendmmsg + +#define __ARCH_WANT_IPC_PARSE_VERSION +#define __ARCH_WANT_OLD_READDIR +#define __ARCH_WANT_SYS_ALARM +#define __ARCH_WANT_SYS_GETHOSTNAME +#define __ARCH_WANT_SYS_PAUSE +#define __ARCH_WANT_SYS_SIGNAL +#define __ARCH_WANT_SYS_UTIME +#define __ARCH_WANT_SYS_SOCKETCALL +#define __ARCH_WANT_SYS_IPC +#define __ARCH_WANT_SYS_FADVISE64 +#define __ARCH_WANT_SYS_GETPGRP +#define __ARCH_WANT_SYS_LLSEEK +#define __ARCH_WANT_SYS_NICE +#define __ARCH_WANT_SYS_OLD_GETRLIMIT +#define __ARCH_WANT_SYS_OLD_MMAP +#define __ARCH_WANT_SYS_OLDUMOUNT +#define __ARCH_WANT_SYS_SIGPENDING +#define __ARCH_WANT_SYS_SIGPROCMASK +#define __ARCH_WANT_SYS_RT_SIGACTION +#define __ARCH_WANT_SYS_RT_SIGSUSPEND +# ifndef CONFIG_64BIT +# define __ARCH_WANT_STAT64 +# define __ARCH_WANT_SYS_TIME +# endif +# ifdef CONFIG_COMPAT +# define __ARCH_WANT_COMPAT_SYS_TIME +# define __ARCH_WANT_COMPAT_SYS_RT_SIGSUSPEND +# endif + +/* + * "Conditional" syscalls + * + * What we want is __attribute__((weak,alias("sys_ni_syscall"))), + * but it doesn't work on all toolchains, so we just do it by hand + */ +#define cond_syscall(x) asm(".weak\t" #x "\n\t.set\t" #x ",sys_ni_syscall") + +#endif /* __KERNEL__ */ +#endif /* _ASM_S390_UNISTD_H_ */ diff --git a/arch/s390/include/asm/user.h b/arch/s390/include/asm/user.h new file mode 100644 index 00000000..1b050e35 --- /dev/null +++ b/arch/s390/include/asm/user.h @@ -0,0 +1,76 @@ +/* + * include/asm-s390/user.h + * + * S390 version + * + * Derived from "include/asm-i386/usr.h" + */ + +#ifndef _S390_USER_H +#define _S390_USER_H + +#include <asm/page.h> +#include <asm/ptrace.h> +/* Core file format: The core file is written in such a way that gdb + can understand it and provide useful information to the user (under + linux we use the 'trad-core' bfd). There are quite a number of + obstacles to being able to view the contents of the floating point + registers, and until these are solved you will not be able to view the + contents of them. Actually, you can read in the core file and look at + the contents of the user struct to find out what the floating point + registers contain. + The actual file contents are as follows: + UPAGE: 1 page consisting of a user struct that tells gdb what is present + in the file. Directly after this is a copy of the task_struct, which + is currently not used by gdb, but it may come in useful at some point. + All of the registers are stored as part of the upage. The upage should + always be only one page. + DATA: The data area is stored. We use current->end_text to + current->brk to pick up all of the user variables, plus any memory + that may have been malloced. No attempt is made to determine if a page + is demand-zero or if a page is totally unused, we just cover the entire + range. All of the addresses are rounded in such a way that an integral + number of pages is written. + STACK: We need the stack information in order to get a meaningful + backtrace. We need to write the data from (esp) to + current->start_stack, so we round each of these off in order to be able + to write an integer number of pages. + The minimum core file size is 3 pages, or 12288 bytes. +*/ + + +/* + * This is the old layout of "struct pt_regs", and + * is still the layout used by user mode (the new + * pt_regs doesn't have all registers as the kernel + * doesn't use the extra segment registers) + */ + +/* When the kernel dumps core, it starts by dumping the user struct - + this will be used by gdb to figure out where the data and stack segments + are within the file, and what virtual addresses to use. */ +struct user { +/* We start with the registers, to mimic the way that "memory" is returned + from the ptrace(3,...) function. */ + struct user_regs_struct regs; /* Where the registers are actually stored */ +/* The rest of this junk is to help gdb figure out what goes where */ + unsigned long int u_tsize; /* Text segment size (pages). */ + unsigned long int u_dsize; /* Data segment size (pages). */ + unsigned long int u_ssize; /* Stack segment size (pages). */ + unsigned long start_code; /* Starting virtual address of text. */ + unsigned long start_stack; /* Starting virtual address of stack area. + This is actually the bottom of the stack, + the top of the stack is always found in the + esp register. */ + long int signal; /* Signal that caused the core dump. */ + unsigned long u_ar0; /* Used by gdb to help find the values for */ + /* the registers. */ + unsigned long magic; /* To uniquely identify a core file */ + char u_comm[32]; /* User command that was responsible */ +}; +#define NBPG PAGE_SIZE +#define UPAGES 1 +#define HOST_TEXT_START_ADDR (u.start_code) +#define HOST_STACK_END_ADDR (u.start_stack + u.u_ssize * NBPG) + +#endif /* _S390_USER_H */ diff --git a/arch/s390/include/asm/vdso.h b/arch/s390/include/asm/vdso.h new file mode 100644 index 00000000..c4a11cfa --- /dev/null +++ b/arch/s390/include/asm/vdso.h @@ -0,0 +1,51 @@ +#ifndef __S390_VDSO_H__ +#define __S390_VDSO_H__ + +#ifdef __KERNEL__ + +/* Default link addresses for the vDSOs */ +#define VDSO32_LBASE 0 +#define VDSO64_LBASE 0 + +#define VDSO_VERSION_STRING LINUX_2.6.29 + +#ifndef __ASSEMBLY__ + +/* + * Note about the vdso_data and vdso_per_cpu_data structures: + * + * NEVER USE THEM IN USERSPACE CODE DIRECTLY. The layout of the + * structure is supposed to be known only to the function in the vdso + * itself and may change without notice. + */ + +struct vdso_data { + __u64 tb_update_count; /* Timebase atomicity ctr 0x00 */ + __u64 xtime_tod_stamp; /* TOD clock for xtime 0x08 */ + __u64 xtime_clock_sec; /* Kernel time 0x10 */ + __u64 xtime_clock_nsec; /* 0x18 */ + __u64 wtom_clock_sec; /* Wall to monotonic clock 0x20 */ + __u64 wtom_clock_nsec; /* 0x28 */ + __u32 tz_minuteswest; /* Minutes west of Greenwich 0x30 */ + __u32 tz_dsttime; /* Type of dst correction 0x34 */ + __u32 ectg_available; + __u32 ntp_mult; /* NTP adjusted multiplier 0x3C */ +}; + +struct vdso_per_cpu_data { + __u64 ectg_timer_base; + __u64 ectg_user_time; +}; + +extern struct vdso_data *vdso_data; + +#ifdef CONFIG_64BIT +int vdso_alloc_per_cpu(struct _lowcore *lowcore); +void vdso_free_per_cpu(struct _lowcore *lowcore); +#endif + +#endif /* __ASSEMBLY__ */ + +#endif /* __KERNEL__ */ + +#endif /* __S390_VDSO_H__ */ diff --git a/arch/s390/include/asm/vtoc.h b/arch/s390/include/asm/vtoc.h new file mode 100644 index 00000000..8406a2b3 --- /dev/null +++ b/arch/s390/include/asm/vtoc.h @@ -0,0 +1,215 @@ +/* + * include/asm-s390/vtoc.h + * + * This file contains volume label definitions for DASD devices. + * + * (C) Copyright IBM Corp. 2005 + * + * Author(s): Volker Sameske <sameske@de.ibm.com> + * + */ + +#ifndef _ASM_S390_VTOC_H +#define _ASM_S390_VTOC_H + +#include <linux/types.h> + +struct vtoc_ttr +{ + __u16 tt; + __u8 r; +} __attribute__ ((packed)); + +struct vtoc_cchhb +{ + __u16 cc; + __u16 hh; + __u8 b; +} __attribute__ ((packed)); + +struct vtoc_cchh +{ + __u16 cc; + __u16 hh; +} __attribute__ ((packed)); + +struct vtoc_labeldate +{ + __u8 year; + __u16 day; +} __attribute__ ((packed)); + +struct vtoc_volume_label_cdl +{ + char volkey[4]; /* volume key = volume label */ + char vollbl[4]; /* volume label */ + char volid[6]; /* volume identifier */ + __u8 security; /* security byte */ + struct vtoc_cchhb vtoc; /* VTOC address */ + char res1[5]; /* reserved */ + char cisize[4]; /* CI-size for FBA,... */ + /* ...blanks for CKD */ + char blkperci[4]; /* no of blocks per CI (FBA), blanks for CKD */ + char labperci[4]; /* no of labels per CI (FBA), blanks for CKD */ + char res2[4]; /* reserved */ + char lvtoc[14]; /* owner code for LVTOC */ + char res3[29]; /* reserved */ +} __attribute__ ((packed)); + +struct vtoc_volume_label_ldl { + char vollbl[4]; /* volume label */ + char volid[6]; /* volume identifier */ + char res3[69]; /* reserved */ + char ldl_version; /* version number, valid for ldl format */ + __u64 formatted_blocks; /* valid when ldl_version >= f2 */ +} __attribute__ ((packed)); + +struct vtoc_extent +{ + __u8 typeind; /* extent type indicator */ + __u8 seqno; /* extent sequence number */ + struct vtoc_cchh llimit; /* starting point of this extent */ + struct vtoc_cchh ulimit; /* ending point of this extent */ +} __attribute__ ((packed)); + +struct vtoc_dev_const +{ + __u16 DS4DSCYL; /* number of logical cyls */ + __u16 DS4DSTRK; /* number of tracks in a logical cylinder */ + __u16 DS4DEVTK; /* device track length */ + __u8 DS4DEVI; /* non-last keyed record overhead */ + __u8 DS4DEVL; /* last keyed record overhead */ + __u8 DS4DEVK; /* non-keyed record overhead differential */ + __u8 DS4DEVFG; /* flag byte */ + __u16 DS4DEVTL; /* device tolerance */ + __u8 DS4DEVDT; /* number of DSCB's per track */ + __u8 DS4DEVDB; /* number of directory blocks per track */ +} __attribute__ ((packed)); + +struct vtoc_format1_label +{ + char DS1DSNAM[44]; /* data set name */ + __u8 DS1FMTID; /* format identifier */ + char DS1DSSN[6]; /* data set serial number */ + __u16 DS1VOLSQ; /* volume sequence number */ + struct vtoc_labeldate DS1CREDT; /* creation date: ydd */ + struct vtoc_labeldate DS1EXPDT; /* expiration date */ + __u8 DS1NOEPV; /* number of extents on volume */ + __u8 DS1NOBDB; /* no. of bytes used in last direction blk */ + __u8 DS1FLAG1; /* flag 1 */ + char DS1SYSCD[13]; /* system code */ + struct vtoc_labeldate DS1REFD; /* date last referenced */ + __u8 DS1SMSFG; /* system managed storage indicators */ + __u8 DS1SCXTF; /* sec. space extension flag byte */ + __u16 DS1SCXTV; /* secondary space extension value */ + __u8 DS1DSRG1; /* data set organisation byte 1 */ + __u8 DS1DSRG2; /* data set organisation byte 2 */ + __u8 DS1RECFM; /* record format */ + __u8 DS1OPTCD; /* option code */ + __u16 DS1BLKL; /* block length */ + __u16 DS1LRECL; /* record length */ + __u8 DS1KEYL; /* key length */ + __u16 DS1RKP; /* relative key position */ + __u8 DS1DSIND; /* data set indicators */ + __u8 DS1SCAL1; /* secondary allocation flag byte */ + char DS1SCAL3[3]; /* secondary allocation quantity */ + struct vtoc_ttr DS1LSTAR; /* last used track and block on track */ + __u16 DS1TRBAL; /* space remaining on last used track */ + __u16 res1; /* reserved */ + struct vtoc_extent DS1EXT1; /* first extent description */ + struct vtoc_extent DS1EXT2; /* second extent description */ + struct vtoc_extent DS1EXT3; /* third extent description */ + struct vtoc_cchhb DS1PTRDS; /* possible pointer to f2 or f3 DSCB */ +} __attribute__ ((packed)); + +struct vtoc_format4_label +{ + char DS4KEYCD[44]; /* key code for VTOC labels: 44 times 0x04 */ + __u8 DS4IDFMT; /* format identifier */ + struct vtoc_cchhb DS4HPCHR; /* highest address of a format 1 DSCB */ + __u16 DS4DSREC; /* number of available DSCB's */ + struct vtoc_cchh DS4HCCHH; /* CCHH of next available alternate track */ + __u16 DS4NOATK; /* number of remaining alternate tracks */ + __u8 DS4VTOCI; /* VTOC indicators */ + __u8 DS4NOEXT; /* number of extents in VTOC */ + __u8 DS4SMSFG; /* system managed storage indicators */ + __u8 DS4DEVAC; /* number of alternate cylinders. + * Subtract from first two bytes of + * DS4DEVSZ to get number of usable + * cylinders. can be zero. valid + * only if DS4DEVAV on. */ + struct vtoc_dev_const DS4DEVCT; /* device constants */ + char DS4AMTIM[8]; /* VSAM time stamp */ + char DS4AMCAT[3]; /* VSAM catalog indicator */ + char DS4R2TIM[8]; /* VSAM volume/catalog match time stamp */ + char res1[5]; /* reserved */ + char DS4F6PTR[5]; /* pointer to first format 6 DSCB */ + struct vtoc_extent DS4VTOCE; /* VTOC extent description */ + char res2[10]; /* reserved */ + __u8 DS4EFLVL; /* extended free-space management level */ + struct vtoc_cchhb DS4EFPTR; /* pointer to extended free-space info */ + char res3; /* reserved */ + __u32 DS4DCYL; /* number of logical cyls */ + char res4[2]; /* reserved */ + __u8 DS4DEVF2; /* device flags */ + char res5; /* reserved */ +} __attribute__ ((packed)); + +struct vtoc_ds5ext +{ + __u16 t; /* RTA of the first track of free extent */ + __u16 fc; /* number of whole cylinders in free ext. */ + __u8 ft; /* number of remaining free tracks */ +} __attribute__ ((packed)); + +struct vtoc_format5_label +{ + char DS5KEYID[4]; /* key identifier */ + struct vtoc_ds5ext DS5AVEXT; /* first available (free-space) extent. */ + struct vtoc_ds5ext DS5EXTAV[7]; /* seven available extents */ + __u8 DS5FMTID; /* format identifier */ + struct vtoc_ds5ext DS5MAVET[18]; /* eighteen available extents */ + struct vtoc_cchhb DS5PTRDS; /* pointer to next format5 DSCB */ +} __attribute__ ((packed)); + +struct vtoc_ds7ext +{ + __u32 a; /* starting RTA value */ + __u32 b; /* ending RTA value + 1 */ +} __attribute__ ((packed)); + +struct vtoc_format7_label +{ + char DS7KEYID[4]; /* key identifier */ + struct vtoc_ds7ext DS7EXTNT[5]; /* space for 5 extent descriptions */ + __u8 DS7FMTID; /* format identifier */ + struct vtoc_ds7ext DS7ADEXT[11]; /* space for 11 extent descriptions */ + char res1[2]; /* reserved */ + struct vtoc_cchhb DS7PTRDS; /* pointer to next FMT7 DSCB */ +} __attribute__ ((packed)); + +struct vtoc_cms_label { + __u8 label_id[4]; /* Label identifier */ + __u8 vol_id[6]; /* Volid */ + __u16 version_id; /* Version identifier */ + __u32 block_size; /* Disk block size */ + __u32 origin_ptr; /* Disk origin pointer */ + __u32 usable_count; /* Number of usable cylinders/blocks */ + __u32 formatted_count; /* Maximum number of formatted cylinders/ + * blocks */ + __u32 block_count; /* Disk size in CMS blocks */ + __u32 used_count; /* Number of CMS blocks in use */ + __u32 fst_size; /* File Status Table (FST) size */ + __u32 fst_count; /* Number of FSTs per CMS block */ + __u8 format_date[6]; /* Disk FORMAT date */ + __u8 reserved1[2]; + __u32 disk_offset; /* Disk offset when reserved*/ + __u32 map_block; /* Allocation Map Block with next hole */ + __u32 hblk_disp; /* Displacement into HBLK data of next hole */ + __u32 user_disp; /* Displacement into user part of Allocation + * map */ + __u8 reserved2[4]; + __u8 segment_name[8]; /* Name of shared segment */ +} __attribute__ ((packed)); + +#endif /* _ASM_S390_VTOC_H */ diff --git a/arch/s390/include/asm/xor.h b/arch/s390/include/asm/xor.h new file mode 100644 index 00000000..c82eb12a --- /dev/null +++ b/arch/s390/include/asm/xor.h @@ -0,0 +1 @@ +#include <asm-generic/xor.h> diff --git a/arch/s390/include/asm/zcrypt.h b/arch/s390/include/asm/zcrypt.h new file mode 100644 index 00000000..00d3bbd4 --- /dev/null +++ b/arch/s390/include/asm/zcrypt.h @@ -0,0 +1,276 @@ +/* + * include/asm-s390/zcrypt.h + * + * zcrypt 2.1.0 (user-visible header) + * + * Copyright (C) 2001, 2006 IBM Corporation + * Author(s): Robert Burroughs + * Eric Rossman (edrossma@us.ibm.com) + * + * Hotplug & misc device support: Jochen Roehrig (roehrig@de.ibm.com) + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2, or (at your option) + * any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + */ + +#ifndef __ASM_S390_ZCRYPT_H +#define __ASM_S390_ZCRYPT_H + +#define ZCRYPT_VERSION 2 +#define ZCRYPT_RELEASE 1 +#define ZCRYPT_VARIANT 1 + +#include <linux/ioctl.h> +#include <linux/compiler.h> + +/** + * struct ica_rsa_modexpo + * + * Requirements: + * - outputdatalength is at least as large as inputdatalength. + * - All key parts are right justified in their fields, padded on + * the left with zeroes. + * - length(b_key) = inputdatalength + * - length(n_modulus) = inputdatalength + */ +struct ica_rsa_modexpo { + char __user * inputdata; + unsigned int inputdatalength; + char __user * outputdata; + unsigned int outputdatalength; + char __user * b_key; + char __user * n_modulus; +}; + +/** + * struct ica_rsa_modexpo_crt + * + * Requirements: + * - inputdatalength is even. + * - outputdatalength is at least as large as inputdatalength. + * - All key parts are right justified in their fields, padded on + * the left with zeroes. + * - length(bp_key) = inputdatalength/2 + 8 + * - length(bq_key) = inputdatalength/2 + * - length(np_key) = inputdatalength/2 + 8 + * - length(nq_key) = inputdatalength/2 + * - length(u_mult_inv) = inputdatalength/2 + 8 + */ +struct ica_rsa_modexpo_crt { + char __user * inputdata; + unsigned int inputdatalength; + char __user * outputdata; + unsigned int outputdatalength; + char __user * bp_key; + char __user * bq_key; + char __user * np_prime; + char __user * nq_prime; + char __user * u_mult_inv; +}; + +/** + * CPRBX + * Note that all shorts and ints are big-endian. + * All pointer fields are 16 bytes long, and mean nothing. + * + * A request CPRB is followed by a request_parameter_block. + * + * The request (or reply) parameter block is organized thus: + * function code + * VUD block + * key block + */ +struct CPRBX { + unsigned short cprb_len; /* CPRB length 220 */ + unsigned char cprb_ver_id; /* CPRB version id. 0x02 */ + unsigned char pad_000[3]; /* Alignment pad bytes */ + unsigned char func_id[2]; /* function id 0x5432 */ + unsigned char cprb_flags[4]; /* Flags */ + unsigned int req_parml; /* request parameter buffer len */ + unsigned int req_datal; /* request data buffer */ + unsigned int rpl_msgbl; /* reply message block length */ + unsigned int rpld_parml; /* replied parameter block len */ + unsigned int rpl_datal; /* reply data block len */ + unsigned int rpld_datal; /* replied data block len */ + unsigned int req_extbl; /* request extension block len */ + unsigned char pad_001[4]; /* reserved */ + unsigned int rpld_extbl; /* replied extension block len */ + unsigned char padx000[16 - sizeof (char *)]; + unsigned char * req_parmb; /* request parm block 'address' */ + unsigned char padx001[16 - sizeof (char *)]; + unsigned char * req_datab; /* request data block 'address' */ + unsigned char padx002[16 - sizeof (char *)]; + unsigned char * rpl_parmb; /* reply parm block 'address' */ + unsigned char padx003[16 - sizeof (char *)]; + unsigned char * rpl_datab; /* reply data block 'address' */ + unsigned char padx004[16 - sizeof (char *)]; + unsigned char * req_extb; /* request extension block 'addr'*/ + unsigned char padx005[16 - sizeof (char *)]; + unsigned char * rpl_extb; /* reply extension block 'address'*/ + unsigned short ccp_rtcode; /* server return code */ + unsigned short ccp_rscode; /* server reason code */ + unsigned int mac_data_len; /* Mac Data Length */ + unsigned char logon_id[8]; /* Logon Identifier */ + unsigned char mac_value[8]; /* Mac Value */ + unsigned char mac_content_flgs;/* Mac content flag byte */ + unsigned char pad_002; /* Alignment */ + unsigned short domain; /* Domain */ + unsigned char usage_domain[4];/* Usage domain */ + unsigned char cntrl_domain[4];/* Control domain */ + unsigned char S390enf_mask[4];/* S/390 enforcement mask */ + unsigned char pad_004[36]; /* reserved */ +} __attribute__((packed)); + +/** + * xcRB + */ +struct ica_xcRB { + unsigned short agent_ID; + unsigned int user_defined; + unsigned short request_ID; + unsigned int request_control_blk_length; + unsigned char padding1[16 - sizeof (char *)]; + char __user * request_control_blk_addr; + unsigned int request_data_length; + char padding2[16 - sizeof (char *)]; + char __user * request_data_address; + unsigned int reply_control_blk_length; + char padding3[16 - sizeof (char *)]; + char __user * reply_control_blk_addr; + unsigned int reply_data_length; + char padding4[16 - sizeof (char *)]; + char __user * reply_data_addr; + unsigned short priority_window; + unsigned int status; +} __attribute__((packed)); +#define AUTOSELECT ((unsigned int)0xFFFFFFFF) + +#define ZCRYPT_IOCTL_MAGIC 'z' + +/** + * Interface notes: + * + * The ioctl()s which are implemented (along with relevant details) + * are: + * + * ICARSAMODEXPO + * Perform an RSA operation using a Modulus-Exponent pair + * This takes an ica_rsa_modexpo struct as its arg. + * + * NOTE: please refer to the comments preceding this structure + * for the implementation details for the contents of the + * block + * + * ICARSACRT + * Perform an RSA operation using a Chinese-Remainder Theorem key + * This takes an ica_rsa_modexpo_crt struct as its arg. + * + * NOTE: please refer to the comments preceding this structure + * for the implementation details for the contents of the + * block + * + * ZSECSENDCPRB + * Send an arbitrary CPRB to a crypto card. + * + * Z90STAT_STATUS_MASK + * Return an 64 element array of unsigned chars for the status of + * all devices. + * 0x01: PCICA + * 0x02: PCICC + * 0x03: PCIXCC_MCL2 + * 0x04: PCIXCC_MCL3 + * 0x05: CEX2C + * 0x06: CEX2A + * 0x0d: device is disabled via the proc filesystem + * + * Z90STAT_QDEPTH_MASK + * Return an 64 element array of unsigned chars for the queue + * depth of all devices. + * + * Z90STAT_PERDEV_REQCNT + * Return an 64 element array of unsigned integers for the number + * of successfully completed requests per device since the device + * was detected and made available. + * + * Z90STAT_REQUESTQ_COUNT + * Return an integer count of the number of entries waiting to be + * sent to a device. + * + * Z90STAT_PENDINGQ_COUNT + * Return an integer count of the number of entries sent to all + * devices awaiting the reply. + * + * Z90STAT_TOTALOPEN_COUNT + * Return an integer count of the number of open file handles. + * + * Z90STAT_DOMAIN_INDEX + * Return the integer value of the Cryptographic Domain. + * + * The following ioctls are deprecated and should be no longer used: + * + * Z90STAT_TOTALCOUNT + * Return an integer count of all device types together. + * + * Z90STAT_PCICACOUNT + * Return an integer count of all PCICAs. + * + * Z90STAT_PCICCCOUNT + * Return an integer count of all PCICCs. + * + * Z90STAT_PCIXCCMCL2COUNT + * Return an integer count of all MCL2 PCIXCCs. + * + * Z90STAT_PCIXCCMCL3COUNT + * Return an integer count of all MCL3 PCIXCCs. + * + * Z90STAT_CEX2CCOUNT + * Return an integer count of all CEX2Cs. + * + * Z90STAT_CEX2ACOUNT + * Return an integer count of all CEX2As. + * + * ICAZ90STATUS + * Return some device driver status in a ica_z90_status struct + * This takes an ica_z90_status struct as its arg. + * + * Z90STAT_PCIXCCCOUNT + * Return an integer count of all PCIXCCs (MCL2 + MCL3). + * This is DEPRECATED now that MCL3 PCIXCCs are treated differently from + * MCL2 PCIXCCs. + */ + +/** + * Supported ioctl calls + */ +#define ICARSAMODEXPO _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x05, 0) +#define ICARSACRT _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x06, 0) +#define ZSECSENDCPRB _IOC(_IOC_READ|_IOC_WRITE, ZCRYPT_IOCTL_MAGIC, 0x81, 0) + +/* New status calls */ +#define Z90STAT_TOTALCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x40, int) +#define Z90STAT_PCICACOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x41, int) +#define Z90STAT_PCICCCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x42, int) +#define Z90STAT_PCIXCCMCL2COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4b, int) +#define Z90STAT_PCIXCCMCL3COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4c, int) +#define Z90STAT_CEX2CCOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4d, int) +#define Z90STAT_CEX2ACOUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4e, int) +#define Z90STAT_REQUESTQ_COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x44, int) +#define Z90STAT_PENDINGQ_COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x45, int) +#define Z90STAT_TOTALOPEN_COUNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x46, int) +#define Z90STAT_DOMAIN_INDEX _IOR(ZCRYPT_IOCTL_MAGIC, 0x47, int) +#define Z90STAT_STATUS_MASK _IOR(ZCRYPT_IOCTL_MAGIC, 0x48, char[64]) +#define Z90STAT_QDEPTH_MASK _IOR(ZCRYPT_IOCTL_MAGIC, 0x49, char[64]) +#define Z90STAT_PERDEV_REQCNT _IOR(ZCRYPT_IOCTL_MAGIC, 0x4a, int[64]) + +#endif /* __ASM_S390_ZCRYPT_H */ |