diff options
Diffstat (limited to 'ANDROID_3.4.5/arch/parisc/mm')
| -rw-r--r-- | ANDROID_3.4.5/arch/parisc/mm/Makefile | 5 | ||||
| -rw-r--r-- | ANDROID_3.4.5/arch/parisc/mm/fault.c | 270 | ||||
| -rw-r--r-- | ANDROID_3.4.5/arch/parisc/mm/init.c | 1109 | ||||
| -rw-r--r-- | ANDROID_3.4.5/arch/parisc/mm/ioremap.c | 99 |
4 files changed, 0 insertions, 1483 deletions
diff --git a/ANDROID_3.4.5/arch/parisc/mm/Makefile b/ANDROID_3.4.5/arch/parisc/mm/Makefile deleted file mode 100644 index 758ceefb..00000000 --- a/ANDROID_3.4.5/arch/parisc/mm/Makefile +++ /dev/null @@ -1,5 +0,0 @@ -# -# Makefile for arch/parisc/mm -# - -obj-y := init.o fault.o ioremap.o diff --git a/ANDROID_3.4.5/arch/parisc/mm/fault.c b/ANDROID_3.4.5/arch/parisc/mm/fault.c deleted file mode 100644 index 18162ce4..00000000 --- a/ANDROID_3.4.5/arch/parisc/mm/fault.c +++ /dev/null @@ -1,270 +0,0 @@ -/* - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - * - * Copyright (C) 1995, 1996, 1997, 1998 by Ralf Baechle - * Copyright 1999 SuSE GmbH (Philipp Rumpf, prumpf@tux.org) - * Copyright 1999 Hewlett Packard Co. - * - */ - -#include <linux/mm.h> -#include <linux/ptrace.h> -#include <linux/sched.h> -#include <linux/interrupt.h> -#include <linux/module.h> - -#include <asm/uaccess.h> -#include <asm/traps.h> - -#define PRINT_USER_FAULTS /* (turn this on if you want user faults to be */ - /* dumped to the console via printk) */ - - -/* Various important other fields */ -#define bit22set(x) (x & 0x00000200) -#define bits23_25set(x) (x & 0x000001c0) -#define isGraphicsFlushRead(x) ((x & 0xfc003fdf) == 0x04001a80) - /* extended opcode is 0x6a */ - -#define BITSSET 0x1c0 /* for identifying LDCW */ - - -DEFINE_PER_CPU(struct exception_data, exception_data); - -/* - * parisc_acctyp(unsigned int inst) -- - * Given a PA-RISC memory access instruction, determine if the - * the instruction would perform a memory read or memory write - * operation. - * - * This function assumes that the given instruction is a memory access - * instruction (i.e. you should really only call it if you know that - * the instruction has generated some sort of a memory access fault). - * - * Returns: - * VM_READ if read operation - * VM_WRITE if write operation - * VM_EXEC if execute operation - */ -static unsigned long -parisc_acctyp(unsigned long code, unsigned int inst) -{ - if (code == 6 || code == 16) - return VM_EXEC; - - switch (inst & 0xf0000000) { - case 0x40000000: /* load */ - case 0x50000000: /* new load */ - return VM_READ; - - case 0x60000000: /* store */ - case 0x70000000: /* new store */ - return VM_WRITE; - - case 0x20000000: /* coproc */ - case 0x30000000: /* coproc2 */ - if (bit22set(inst)) - return VM_WRITE; - - case 0x0: /* indexed/memory management */ - if (bit22set(inst)) { - /* - * Check for the 'Graphics Flush Read' instruction. - * It resembles an FDC instruction, except for bits - * 20 and 21. Any combination other than zero will - * utilize the block mover functionality on some - * older PA-RISC platforms. The case where a block - * move is performed from VM to graphics IO space - * should be treated as a READ. - * - * The significance of bits 20,21 in the FDC - * instruction is: - * - * 00 Flush data cache (normal instruction behavior) - * 01 Graphics flush write (IO space -> VM) - * 10 Graphics flush read (VM -> IO space) - * 11 Graphics flush read/write (VM <-> IO space) - */ - if (isGraphicsFlushRead(inst)) - return VM_READ; - return VM_WRITE; - } else { - /* - * Check for LDCWX and LDCWS (semaphore instructions). - * If bits 23 through 25 are all 1's it is one of - * the above two instructions and is a write. - * - * Note: With the limited bits we are looking at, - * this will also catch PROBEW and PROBEWI. However, - * these should never get in here because they don't - * generate exceptions of the type: - * Data TLB miss fault/data page fault - * Data memory protection trap - */ - if (bits23_25set(inst) == BITSSET) - return VM_WRITE; - } - return VM_READ; /* Default */ - } - return VM_READ; /* Default */ -} - -#undef bit22set -#undef bits23_25set -#undef isGraphicsFlushRead -#undef BITSSET - - -#if 0 -/* This is the treewalk to find a vma which is the highest that has - * a start < addr. We're using find_vma_prev instead right now, but - * we might want to use this at some point in the future. Probably - * not, but I want it committed to CVS so I don't lose it :-) - */ - while (tree != vm_avl_empty) { - if (tree->vm_start > addr) { - tree = tree->vm_avl_left; - } else { - prev = tree; - if (prev->vm_next == NULL) - break; - if (prev->vm_next->vm_start > addr) - break; - tree = tree->vm_avl_right; - } - } -#endif - -int fixup_exception(struct pt_regs *regs) -{ - const struct exception_table_entry *fix; - - fix = search_exception_tables(regs->iaoq[0]); - if (fix) { - struct exception_data *d; - d = &__get_cpu_var(exception_data); - d->fault_ip = regs->iaoq[0]; - d->fault_space = regs->isr; - d->fault_addr = regs->ior; - - regs->iaoq[0] = ((fix->fixup) & ~3); - /* - * NOTE: In some cases the faulting instruction - * may be in the delay slot of a branch. We - * don't want to take the branch, so we don't - * increment iaoq[1], instead we set it to be - * iaoq[0]+4, and clear the B bit in the PSW - */ - regs->iaoq[1] = regs->iaoq[0] + 4; - regs->gr[0] &= ~PSW_B; /* IPSW in gr[0] */ - - return 1; - } - - return 0; -} - -void do_page_fault(struct pt_regs *regs, unsigned long code, - unsigned long address) -{ - struct vm_area_struct *vma, *prev_vma; - struct task_struct *tsk = current; - struct mm_struct *mm = tsk->mm; - unsigned long acc_type; - int fault; - - if (in_atomic() || !mm) - goto no_context; - - down_read(&mm->mmap_sem); - vma = find_vma_prev(mm, address, &prev_vma); - if (!vma || address < vma->vm_start) - goto check_expansion; -/* - * Ok, we have a good vm_area for this memory access. We still need to - * check the access permissions. - */ - -good_area: - - acc_type = parisc_acctyp(code,regs->iir); - - if ((vma->vm_flags & acc_type) != acc_type) - goto bad_area; - - /* - * If for any reason at all we couldn't handle the fault, make - * sure we exit gracefully rather than endlessly redo the - * fault. - */ - - fault = handle_mm_fault(mm, vma, address, (acc_type & VM_WRITE) ? FAULT_FLAG_WRITE : 0); - if (unlikely(fault & VM_FAULT_ERROR)) { - /* - * We hit a shared mapping outside of the file, or some - * other thing happened to us that made us unable to - * handle the page fault gracefully. - */ - if (fault & VM_FAULT_OOM) - goto out_of_memory; - else if (fault & VM_FAULT_SIGBUS) - goto bad_area; - BUG(); - } - if (fault & VM_FAULT_MAJOR) - current->maj_flt++; - else - current->min_flt++; - up_read(&mm->mmap_sem); - return; - -check_expansion: - vma = prev_vma; - if (vma && (expand_stack(vma, address) == 0)) - goto good_area; - -/* - * Something tried to access memory that isn't in our memory map.. - */ -bad_area: - up_read(&mm->mmap_sem); - - if (user_mode(regs)) { - struct siginfo si; - -#ifdef PRINT_USER_FAULTS - printk(KERN_DEBUG "\n"); - printk(KERN_DEBUG "do_page_fault() pid=%d command='%s' type=%lu address=0x%08lx\n", - task_pid_nr(tsk), tsk->comm, code, address); - if (vma) { - printk(KERN_DEBUG "vm_start = 0x%08lx, vm_end = 0x%08lx\n", - vma->vm_start, vma->vm_end); - } - show_regs(regs); -#endif - /* FIXME: actually we need to get the signo and code correct */ - si.si_signo = SIGSEGV; - si.si_errno = 0; - si.si_code = SEGV_MAPERR; - si.si_addr = (void __user *) address; - force_sig_info(SIGSEGV, &si, current); - return; - } - -no_context: - - if (!user_mode(regs) && fixup_exception(regs)) { - return; - } - - parisc_terminate("Bad Address (null pointer deref?)", regs, code, address); - - out_of_memory: - up_read(&mm->mmap_sem); - if (!user_mode(regs)) - goto no_context; - pagefault_out_of_memory(); -} diff --git a/ANDROID_3.4.5/arch/parisc/mm/init.c b/ANDROID_3.4.5/arch/parisc/mm/init.c deleted file mode 100644 index 82f364e2..00000000 --- a/ANDROID_3.4.5/arch/parisc/mm/init.c +++ /dev/null @@ -1,1109 +0,0 @@ -/* - * linux/arch/parisc/mm/init.c - * - * Copyright (C) 1995 Linus Torvalds - * Copyright 1999 SuSE GmbH - * changed by Philipp Rumpf - * Copyright 1999 Philipp Rumpf (prumpf@tux.org) - * Copyright 2004 Randolph Chung (tausq@debian.org) - * Copyright 2006-2007 Helge Deller (deller@gmx.de) - * - */ - - -#include <linux/module.h> -#include <linux/mm.h> -#include <linux/bootmem.h> -#include <linux/gfp.h> -#include <linux/delay.h> -#include <linux/init.h> -#include <linux/pci.h> /* for hppa_dma_ops and pcxl_dma_ops */ -#include <linux/initrd.h> -#include <linux/swap.h> -#include <linux/unistd.h> -#include <linux/nodemask.h> /* for node_online_map */ -#include <linux/pagemap.h> /* for release_pages and page_cache_release */ - -#include <asm/pgalloc.h> -#include <asm/pgtable.h> -#include <asm/tlb.h> -#include <asm/pdc_chassis.h> -#include <asm/mmzone.h> -#include <asm/sections.h> - -extern int data_start; - -#ifdef CONFIG_DISCONTIGMEM -struct node_map_data node_data[MAX_NUMNODES] __read_mostly; -unsigned char pfnnid_map[PFNNID_MAP_MAX] __read_mostly; -#endif - -static struct resource data_resource = { - .name = "Kernel data", - .flags = IORESOURCE_BUSY | IORESOURCE_MEM, -}; - -static struct resource code_resource = { - .name = "Kernel code", - .flags = IORESOURCE_BUSY | IORESOURCE_MEM, -}; - -static struct resource pdcdata_resource = { - .name = "PDC data (Page Zero)", - .start = 0, - .end = 0x9ff, - .flags = IORESOURCE_BUSY | IORESOURCE_MEM, -}; - -static struct resource sysram_resources[MAX_PHYSMEM_RANGES] __read_mostly; - -/* The following array is initialized from the firmware specific - * information retrieved in kernel/inventory.c. - */ - -physmem_range_t pmem_ranges[MAX_PHYSMEM_RANGES] __read_mostly; -int npmem_ranges __read_mostly; - -#ifdef CONFIG_64BIT -#define MAX_MEM (~0UL) -#else /* !CONFIG_64BIT */ -#define MAX_MEM (3584U*1024U*1024U) -#endif /* !CONFIG_64BIT */ - -static unsigned long mem_limit __read_mostly = MAX_MEM; - -static void __init mem_limit_func(void) -{ - char *cp, *end; - unsigned long limit; - - /* We need this before __setup() functions are called */ - - limit = MAX_MEM; - for (cp = boot_command_line; *cp; ) { - if (memcmp(cp, "mem=", 4) == 0) { - cp += 4; - limit = memparse(cp, &end); - if (end != cp) - break; - cp = end; - } else { - while (*cp != ' ' && *cp) - ++cp; - while (*cp == ' ') - ++cp; - } - } - - if (limit < mem_limit) - mem_limit = limit; -} - -#define MAX_GAP (0x40000000UL >> PAGE_SHIFT) - -static void __init setup_bootmem(void) -{ - unsigned long bootmap_size; - unsigned long mem_max; - unsigned long bootmap_pages; - unsigned long bootmap_start_pfn; - unsigned long bootmap_pfn; -#ifndef CONFIG_DISCONTIGMEM - physmem_range_t pmem_holes[MAX_PHYSMEM_RANGES - 1]; - int npmem_holes; -#endif - int i, sysram_resource_count; - - disable_sr_hashing(); /* Turn off space register hashing */ - - /* - * Sort the ranges. Since the number of ranges is typically - * small, and performance is not an issue here, just do - * a simple insertion sort. - */ - - for (i = 1; i < npmem_ranges; i++) { - int j; - - for (j = i; j > 0; j--) { - unsigned long tmp; - - if (pmem_ranges[j-1].start_pfn < - pmem_ranges[j].start_pfn) { - - break; - } - tmp = pmem_ranges[j-1].start_pfn; - pmem_ranges[j-1].start_pfn = pmem_ranges[j].start_pfn; - pmem_ranges[j].start_pfn = tmp; - tmp = pmem_ranges[j-1].pages; - pmem_ranges[j-1].pages = pmem_ranges[j].pages; - pmem_ranges[j].pages = tmp; - } - } - -#ifndef CONFIG_DISCONTIGMEM - /* - * Throw out ranges that are too far apart (controlled by - * MAX_GAP). - */ - - for (i = 1; i < npmem_ranges; i++) { - if (pmem_ranges[i].start_pfn - - (pmem_ranges[i-1].start_pfn + - pmem_ranges[i-1].pages) > MAX_GAP) { - npmem_ranges = i; - printk("Large gap in memory detected (%ld pages). " - "Consider turning on CONFIG_DISCONTIGMEM\n", - pmem_ranges[i].start_pfn - - (pmem_ranges[i-1].start_pfn + - pmem_ranges[i-1].pages)); - break; - } - } -#endif - - if (npmem_ranges > 1) { - - /* Print the memory ranges */ - - printk(KERN_INFO "Memory Ranges:\n"); - - for (i = 0; i < npmem_ranges; i++) { - unsigned long start; - unsigned long size; - - size = (pmem_ranges[i].pages << PAGE_SHIFT); - start = (pmem_ranges[i].start_pfn << PAGE_SHIFT); - printk(KERN_INFO "%2d) Start 0x%016lx End 0x%016lx Size %6ld MB\n", - i,start, start + (size - 1), size >> 20); - } - } - - sysram_resource_count = npmem_ranges; - for (i = 0; i < sysram_resource_count; i++) { - struct resource *res = &sysram_resources[i]; - res->name = "System RAM"; - res->start = pmem_ranges[i].start_pfn << PAGE_SHIFT; - res->end = res->start + (pmem_ranges[i].pages << PAGE_SHIFT)-1; - res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; - request_resource(&iomem_resource, res); - } - - /* - * For 32 bit kernels we limit the amount of memory we can - * support, in order to preserve enough kernel address space - * for other purposes. For 64 bit kernels we don't normally - * limit the memory, but this mechanism can be used to - * artificially limit the amount of memory (and it is written - * to work with multiple memory ranges). - */ - - mem_limit_func(); /* check for "mem=" argument */ - - mem_max = 0; - num_physpages = 0; - for (i = 0; i < npmem_ranges; i++) { - unsigned long rsize; - - rsize = pmem_ranges[i].pages << PAGE_SHIFT; - if ((mem_max + rsize) > mem_limit) { - printk(KERN_WARNING "Memory truncated to %ld MB\n", mem_limit >> 20); - if (mem_max == mem_limit) - npmem_ranges = i; - else { - pmem_ranges[i].pages = (mem_limit >> PAGE_SHIFT) - - (mem_max >> PAGE_SHIFT); - npmem_ranges = i + 1; - mem_max = mem_limit; - } - num_physpages += pmem_ranges[i].pages; - break; - } - num_physpages += pmem_ranges[i].pages; - mem_max += rsize; - } - - printk(KERN_INFO "Total Memory: %ld MB\n",mem_max >> 20); - -#ifndef CONFIG_DISCONTIGMEM - /* Merge the ranges, keeping track of the holes */ - - { - unsigned long end_pfn; - unsigned long hole_pages; - - npmem_holes = 0; - end_pfn = pmem_ranges[0].start_pfn + pmem_ranges[0].pages; - for (i = 1; i < npmem_ranges; i++) { - - hole_pages = pmem_ranges[i].start_pfn - end_pfn; - if (hole_pages) { - pmem_holes[npmem_holes].start_pfn = end_pfn; - pmem_holes[npmem_holes++].pages = hole_pages; - end_pfn += hole_pages; - } - end_pfn += pmem_ranges[i].pages; - } - - pmem_ranges[0].pages = end_pfn - pmem_ranges[0].start_pfn; - npmem_ranges = 1; - } -#endif - - bootmap_pages = 0; - for (i = 0; i < npmem_ranges; i++) - bootmap_pages += bootmem_bootmap_pages(pmem_ranges[i].pages); - - bootmap_start_pfn = PAGE_ALIGN(__pa((unsigned long) &_end)) >> PAGE_SHIFT; - -#ifdef CONFIG_DISCONTIGMEM - for (i = 0; i < MAX_PHYSMEM_RANGES; i++) { - memset(NODE_DATA(i), 0, sizeof(pg_data_t)); - NODE_DATA(i)->bdata = &bootmem_node_data[i]; - } - memset(pfnnid_map, 0xff, sizeof(pfnnid_map)); - - for (i = 0; i < npmem_ranges; i++) { - node_set_state(i, N_NORMAL_MEMORY); - node_set_online(i); - } -#endif - - /* - * Initialize and free the full range of memory in each range. - * Note that the only writing these routines do are to the bootmap, - * and we've made sure to locate the bootmap properly so that they - * won't be writing over anything important. - */ - - bootmap_pfn = bootmap_start_pfn; - max_pfn = 0; - for (i = 0; i < npmem_ranges; i++) { - unsigned long start_pfn; - unsigned long npages; - - start_pfn = pmem_ranges[i].start_pfn; - npages = pmem_ranges[i].pages; - - bootmap_size = init_bootmem_node(NODE_DATA(i), - bootmap_pfn, - start_pfn, - (start_pfn + npages) ); - free_bootmem_node(NODE_DATA(i), - (start_pfn << PAGE_SHIFT), - (npages << PAGE_SHIFT) ); - bootmap_pfn += (bootmap_size + PAGE_SIZE - 1) >> PAGE_SHIFT; - if ((start_pfn + npages) > max_pfn) - max_pfn = start_pfn + npages; - } - - /* IOMMU is always used to access "high mem" on those boxes - * that can support enough mem that a PCI device couldn't - * directly DMA to any physical addresses. - * ISA DMA support will need to revisit this. - */ - max_low_pfn = max_pfn; - - /* bootmap sizing messed up? */ - BUG_ON((bootmap_pfn - bootmap_start_pfn) != bootmap_pages); - - /* reserve PAGE0 pdc memory, kernel text/data/bss & bootmap */ - -#define PDC_CONSOLE_IO_IODC_SIZE 32768 - - reserve_bootmem_node(NODE_DATA(0), 0UL, - (unsigned long)(PAGE0->mem_free + - PDC_CONSOLE_IO_IODC_SIZE), BOOTMEM_DEFAULT); - reserve_bootmem_node(NODE_DATA(0), __pa((unsigned long)_text), - (unsigned long)(_end - _text), BOOTMEM_DEFAULT); - reserve_bootmem_node(NODE_DATA(0), (bootmap_start_pfn << PAGE_SHIFT), - ((bootmap_pfn - bootmap_start_pfn) << PAGE_SHIFT), - BOOTMEM_DEFAULT); - -#ifndef CONFIG_DISCONTIGMEM - - /* reserve the holes */ - - for (i = 0; i < npmem_holes; i++) { - reserve_bootmem_node(NODE_DATA(0), - (pmem_holes[i].start_pfn << PAGE_SHIFT), - (pmem_holes[i].pages << PAGE_SHIFT), - BOOTMEM_DEFAULT); - } -#endif - -#ifdef CONFIG_BLK_DEV_INITRD - if (initrd_start) { - printk(KERN_INFO "initrd: %08lx-%08lx\n", initrd_start, initrd_end); - if (__pa(initrd_start) < mem_max) { - unsigned long initrd_reserve; - - if (__pa(initrd_end) > mem_max) { - initrd_reserve = mem_max - __pa(initrd_start); - } else { - initrd_reserve = initrd_end - initrd_start; - } - initrd_below_start_ok = 1; - printk(KERN_INFO "initrd: reserving %08lx-%08lx (mem_max %08lx)\n", __pa(initrd_start), __pa(initrd_start) + initrd_reserve, mem_max); - - reserve_bootmem_node(NODE_DATA(0), __pa(initrd_start), - initrd_reserve, BOOTMEM_DEFAULT); - } - } -#endif - - data_resource.start = virt_to_phys(&data_start); - data_resource.end = virt_to_phys(_end) - 1; - code_resource.start = virt_to_phys(_text); - code_resource.end = virt_to_phys(&data_start)-1; - - /* We don't know which region the kernel will be in, so try - * all of them. - */ - for (i = 0; i < sysram_resource_count; i++) { - struct resource *res = &sysram_resources[i]; - request_resource(res, &code_resource); - request_resource(res, &data_resource); - } - request_resource(&sysram_resources[0], &pdcdata_resource); -} - -static void __init map_pages(unsigned long start_vaddr, - unsigned long start_paddr, unsigned long size, - pgprot_t pgprot, int force) -{ - pgd_t *pg_dir; - pmd_t *pmd; - pte_t *pg_table; - unsigned long end_paddr; - unsigned long start_pmd; - unsigned long start_pte; - unsigned long tmp1; - unsigned long tmp2; - unsigned long address; - unsigned long vaddr; - unsigned long ro_start; - unsigned long ro_end; - unsigned long fv_addr; - unsigned long gw_addr; - extern const unsigned long fault_vector_20; - extern void * const linux_gateway_page; - - ro_start = __pa((unsigned long)_text); - ro_end = __pa((unsigned long)&data_start); - fv_addr = __pa((unsigned long)&fault_vector_20) & PAGE_MASK; - gw_addr = __pa((unsigned long)&linux_gateway_page) & PAGE_MASK; - - end_paddr = start_paddr + size; - - pg_dir = pgd_offset_k(start_vaddr); - -#if PTRS_PER_PMD == 1 - start_pmd = 0; -#else - start_pmd = ((start_vaddr >> PMD_SHIFT) & (PTRS_PER_PMD - 1)); -#endif - start_pte = ((start_vaddr >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)); - - address = start_paddr; - vaddr = start_vaddr; - while (address < end_paddr) { -#if PTRS_PER_PMD == 1 - pmd = (pmd_t *)__pa(pg_dir); -#else - pmd = (pmd_t *)pgd_address(*pg_dir); - - /* - * pmd is physical at this point - */ - - if (!pmd) { - pmd = (pmd_t *) alloc_bootmem_low_pages_node(NODE_DATA(0), PAGE_SIZE << PMD_ORDER); - pmd = (pmd_t *) __pa(pmd); - } - - pgd_populate(NULL, pg_dir, __va(pmd)); -#endif - pg_dir++; - - /* now change pmd to kernel virtual addresses */ - - pmd = (pmd_t *)__va(pmd) + start_pmd; - for (tmp1 = start_pmd; tmp1 < PTRS_PER_PMD; tmp1++, pmd++) { - - /* - * pg_table is physical at this point - */ - - pg_table = (pte_t *)pmd_address(*pmd); - if (!pg_table) { - pg_table = (pte_t *) - alloc_bootmem_low_pages_node(NODE_DATA(0), PAGE_SIZE); - pg_table = (pte_t *) __pa(pg_table); - } - - pmd_populate_kernel(NULL, pmd, __va(pg_table)); - - /* now change pg_table to kernel virtual addresses */ - - pg_table = (pte_t *) __va(pg_table) + start_pte; - for (tmp2 = start_pte; tmp2 < PTRS_PER_PTE; tmp2++, pg_table++) { - pte_t pte; - - /* - * Map the fault vector writable so we can - * write the HPMC checksum. - */ - if (force) - pte = __mk_pte(address, pgprot); - else if (core_kernel_text(vaddr) && - address != fv_addr) - pte = __mk_pte(address, PAGE_KERNEL_EXEC); - else -#if defined(CONFIG_PARISC_PAGE_SIZE_4KB) - if (address >= ro_start && address < ro_end - && address != fv_addr - && address != gw_addr) - pte = __mk_pte(address, PAGE_KERNEL_RO); - else -#endif - pte = __mk_pte(address, pgprot); - - if (address >= end_paddr) { - if (force) - break; - else - pte_val(pte) = 0; - } - - set_pte(pg_table, pte); - - address += PAGE_SIZE; - vaddr += PAGE_SIZE; - } - start_pte = 0; - - if (address >= end_paddr) - break; - } - start_pmd = 0; - } -} - -void free_initmem(void) -{ - unsigned long addr; - unsigned long init_begin = (unsigned long)__init_begin; - unsigned long init_end = (unsigned long)__init_end; - - /* The init text pages are marked R-X. We have to - * flush the icache and mark them RW- - * - * This is tricky, because map_pages is in the init section. - * Do a dummy remap of the data section first (the data - * section is already PAGE_KERNEL) to pull in the TLB entries - * for map_kernel */ - map_pages(init_begin, __pa(init_begin), init_end - init_begin, - PAGE_KERNEL_RWX, 1); - /* now remap at PAGE_KERNEL since the TLB is pre-primed to execute - * map_pages */ - map_pages(init_begin, __pa(init_begin), init_end - init_begin, - PAGE_KERNEL, 1); - - /* force the kernel to see the new TLB entries */ - __flush_tlb_range(0, init_begin, init_end); - /* Attempt to catch anyone trying to execute code here - * by filling the page with BRK insns. - */ - memset((void *)init_begin, 0x00, init_end - init_begin); - /* finally dump all the instructions which were cached, since the - * pages are no-longer executable */ - flush_icache_range(init_begin, init_end); - - for (addr = init_begin; addr < init_end; addr += PAGE_SIZE) { - ClearPageReserved(virt_to_page(addr)); - init_page_count(virt_to_page(addr)); - free_page(addr); - num_physpages++; - totalram_pages++; - } - - /* set up a new led state on systems shipped LED State panel */ - pdc_chassis_send_status(PDC_CHASSIS_DIRECT_BCOMPLETE); - - printk(KERN_INFO "Freeing unused kernel memory: %luk freed\n", - (init_end - init_begin) >> 10); -} - - -#ifdef CONFIG_DEBUG_RODATA -void mark_rodata_ro(void) -{ - /* rodata memory was already mapped with KERNEL_RO access rights by - pagetable_init() and map_pages(). No need to do additional stuff here */ - printk (KERN_INFO "Write protecting the kernel read-only data: %luk\n", - (unsigned long)(__end_rodata - __start_rodata) >> 10); -} -#endif - - -/* - * Just an arbitrary offset to serve as a "hole" between mapping areas - * (between top of physical memory and a potential pcxl dma mapping - * area, and below the vmalloc mapping area). - * - * The current 32K value just means that there will be a 32K "hole" - * between mapping areas. That means that any out-of-bounds memory - * accesses will hopefully be caught. The vmalloc() routines leaves - * a hole of 4kB between each vmalloced area for the same reason. - */ - - /* Leave room for gateway page expansion */ -#if KERNEL_MAP_START < GATEWAY_PAGE_SIZE -#error KERNEL_MAP_START is in gateway reserved region -#endif -#define MAP_START (KERNEL_MAP_START) - -#define VM_MAP_OFFSET (32*1024) -#define SET_MAP_OFFSET(x) ((void *)(((unsigned long)(x) + VM_MAP_OFFSET) \ - & ~(VM_MAP_OFFSET-1))) - -void *parisc_vmalloc_start __read_mostly; -EXPORT_SYMBOL(parisc_vmalloc_start); - -#ifdef CONFIG_PA11 -unsigned long pcxl_dma_start __read_mostly; -#endif - -void __init mem_init(void) -{ - int codesize, reservedpages, datasize, initsize; - - /* Do sanity checks on page table constants */ - BUILD_BUG_ON(PTE_ENTRY_SIZE != sizeof(pte_t)); - BUILD_BUG_ON(PMD_ENTRY_SIZE != sizeof(pmd_t)); - BUILD_BUG_ON(PGD_ENTRY_SIZE != sizeof(pgd_t)); - BUILD_BUG_ON(PAGE_SHIFT + BITS_PER_PTE + BITS_PER_PMD + BITS_PER_PGD - > BITS_PER_LONG); - - high_memory = __va((max_pfn << PAGE_SHIFT)); - -#ifndef CONFIG_DISCONTIGMEM - max_mapnr = page_to_pfn(virt_to_page(high_memory - 1)) + 1; - totalram_pages += free_all_bootmem(); -#else - { - int i; - - for (i = 0; i < npmem_ranges; i++) - totalram_pages += free_all_bootmem_node(NODE_DATA(i)); - } -#endif - - codesize = (unsigned long)_etext - (unsigned long)_text; - datasize = (unsigned long)_edata - (unsigned long)_etext; - initsize = (unsigned long)__init_end - (unsigned long)__init_begin; - - reservedpages = 0; -{ - unsigned long pfn; -#ifdef CONFIG_DISCONTIGMEM - int i; - - for (i = 0; i < npmem_ranges; i++) { - for (pfn = node_start_pfn(i); pfn < node_end_pfn(i); pfn++) { - if (PageReserved(pfn_to_page(pfn))) - reservedpages++; - } - } -#else /* !CONFIG_DISCONTIGMEM */ - for (pfn = 0; pfn < max_pfn; pfn++) { - /* - * Only count reserved RAM pages - */ - if (PageReserved(pfn_to_page(pfn))) - reservedpages++; - } -#endif -} - -#ifdef CONFIG_PA11 - if (hppa_dma_ops == &pcxl_dma_ops) { - pcxl_dma_start = (unsigned long)SET_MAP_OFFSET(MAP_START); - parisc_vmalloc_start = SET_MAP_OFFSET(pcxl_dma_start - + PCXL_DMA_MAP_SIZE); - } else { - pcxl_dma_start = 0; - parisc_vmalloc_start = SET_MAP_OFFSET(MAP_START); - } -#else - parisc_vmalloc_start = SET_MAP_OFFSET(MAP_START); -#endif - - printk(KERN_INFO "Memory: %luk/%luk available (%dk kernel code, %dk reserved, %dk data, %dk init)\n", - nr_free_pages() << (PAGE_SHIFT-10), - num_physpages << (PAGE_SHIFT-10), - codesize >> 10, - reservedpages << (PAGE_SHIFT-10), - datasize >> 10, - initsize >> 10 - ); - -#ifdef CONFIG_DEBUG_KERNEL /* double-sanity-check paranoia */ - printk("virtual kernel memory layout:\n" - " vmalloc : 0x%p - 0x%p (%4ld MB)\n" - " memory : 0x%p - 0x%p (%4ld MB)\n" - " .init : 0x%p - 0x%p (%4ld kB)\n" - " .data : 0x%p - 0x%p (%4ld kB)\n" - " .text : 0x%p - 0x%p (%4ld kB)\n", - - (void*)VMALLOC_START, (void*)VMALLOC_END, - (VMALLOC_END - VMALLOC_START) >> 20, - - __va(0), high_memory, - ((unsigned long)high_memory - (unsigned long)__va(0)) >> 20, - - __init_begin, __init_end, - ((unsigned long)__init_end - (unsigned long)__init_begin) >> 10, - - _etext, _edata, - ((unsigned long)_edata - (unsigned long)_etext) >> 10, - - _text, _etext, - ((unsigned long)_etext - (unsigned long)_text) >> 10); -#endif -} - -unsigned long *empty_zero_page __read_mostly; -EXPORT_SYMBOL(empty_zero_page); - -void show_mem(unsigned int filter) -{ - int i,free = 0,total = 0,reserved = 0; - int shared = 0, cached = 0; - - printk(KERN_INFO "Mem-info:\n"); - show_free_areas(filter); -#ifndef CONFIG_DISCONTIGMEM - i = max_mapnr; - while (i-- > 0) { - total++; - if (PageReserved(mem_map+i)) - reserved++; - else if (PageSwapCache(mem_map+i)) - cached++; - else if (!page_count(&mem_map[i])) - free++; - else - shared += page_count(&mem_map[i]) - 1; - } -#else - for (i = 0; i < npmem_ranges; i++) { - int j; - - for (j = node_start_pfn(i); j < node_end_pfn(i); j++) { - struct page *p; - unsigned long flags; - - pgdat_resize_lock(NODE_DATA(i), &flags); - p = nid_page_nr(i, j) - node_start_pfn(i); - - total++; - if (PageReserved(p)) - reserved++; - else if (PageSwapCache(p)) - cached++; - else if (!page_count(p)) - free++; - else - shared += page_count(p) - 1; - pgdat_resize_unlock(NODE_DATA(i), &flags); - } - } -#endif - printk(KERN_INFO "%d pages of RAM\n", total); - printk(KERN_INFO "%d reserved pages\n", reserved); - printk(KERN_INFO "%d pages shared\n", shared); - printk(KERN_INFO "%d pages swap cached\n", cached); - - -#ifdef CONFIG_DISCONTIGMEM - { - struct zonelist *zl; - int i, j; - - for (i = 0; i < npmem_ranges; i++) { - zl = node_zonelist(i, 0); - for (j = 0; j < MAX_NR_ZONES; j++) { - struct zoneref *z; - struct zone *zone; - - printk("Zone list for zone %d on node %d: ", j, i); - for_each_zone_zonelist(zone, z, zl, j) - printk("[%d/%s] ", zone_to_nid(zone), - zone->name); - printk("\n"); - } - } - } -#endif -} - -/* - * pagetable_init() sets up the page tables - * - * Note that gateway_init() places the Linux gateway page at page 0. - * Since gateway pages cannot be dereferenced this has the desirable - * side effect of trapping those pesky NULL-reference errors in the - * kernel. - */ -static void __init pagetable_init(void) -{ - int range; - - /* Map each physical memory range to its kernel vaddr */ - - for (range = 0; range < npmem_ranges; range++) { - unsigned long start_paddr; - unsigned long end_paddr; - unsigned long size; - - start_paddr = pmem_ranges[range].start_pfn << PAGE_SHIFT; - end_paddr = start_paddr + (pmem_ranges[range].pages << PAGE_SHIFT); - size = pmem_ranges[range].pages << PAGE_SHIFT; - - map_pages((unsigned long)__va(start_paddr), start_paddr, - size, PAGE_KERNEL, 0); - } - -#ifdef CONFIG_BLK_DEV_INITRD - if (initrd_end && initrd_end > mem_limit) { - printk(KERN_INFO "initrd: mapping %08lx-%08lx\n", initrd_start, initrd_end); - map_pages(initrd_start, __pa(initrd_start), - initrd_end - initrd_start, PAGE_KERNEL, 0); - } -#endif - - empty_zero_page = alloc_bootmem_pages(PAGE_SIZE); - memset(empty_zero_page, 0, PAGE_SIZE); -} - -static void __init gateway_init(void) -{ - unsigned long linux_gateway_page_addr; - /* FIXME: This is 'const' in order to trick the compiler - into not treating it as DP-relative data. */ - extern void * const linux_gateway_page; - - linux_gateway_page_addr = LINUX_GATEWAY_ADDR & PAGE_MASK; - - /* - * Setup Linux Gateway page. - * - * The Linux gateway page will reside in kernel space (on virtual - * page 0), so it doesn't need to be aliased into user space. - */ - - map_pages(linux_gateway_page_addr, __pa(&linux_gateway_page), - PAGE_SIZE, PAGE_GATEWAY, 1); -} - -#ifdef CONFIG_HPUX -void -map_hpux_gateway_page(struct task_struct *tsk, struct mm_struct *mm) -{ - pgd_t *pg_dir; - pmd_t *pmd; - pte_t *pg_table; - unsigned long start_pmd; - unsigned long start_pte; - unsigned long address; - unsigned long hpux_gw_page_addr; - /* FIXME: This is 'const' in order to trick the compiler - into not treating it as DP-relative data. */ - extern void * const hpux_gateway_page; - - hpux_gw_page_addr = HPUX_GATEWAY_ADDR & PAGE_MASK; - - /* - * Setup HP-UX Gateway page. - * - * The HP-UX gateway page resides in the user address space, - * so it needs to be aliased into each process. - */ - - pg_dir = pgd_offset(mm,hpux_gw_page_addr); - -#if PTRS_PER_PMD == 1 - start_pmd = 0; -#else - start_pmd = ((hpux_gw_page_addr >> PMD_SHIFT) & (PTRS_PER_PMD - 1)); -#endif - start_pte = ((hpux_gw_page_addr >> PAGE_SHIFT) & (PTRS_PER_PTE - 1)); - - address = __pa(&hpux_gateway_page); -#if PTRS_PER_PMD == 1 - pmd = (pmd_t *)__pa(pg_dir); -#else - pmd = (pmd_t *) pgd_address(*pg_dir); - - /* - * pmd is physical at this point - */ - - if (!pmd) { - pmd = (pmd_t *) get_zeroed_page(GFP_KERNEL); - pmd = (pmd_t *) __pa(pmd); - } - - __pgd_val_set(*pg_dir, PxD_FLAG_PRESENT | PxD_FLAG_VALID | (unsigned long) pmd); -#endif - /* now change pmd to kernel virtual addresses */ - - pmd = (pmd_t *)__va(pmd) + start_pmd; - - /* - * pg_table is physical at this point - */ - - pg_table = (pte_t *) pmd_address(*pmd); - if (!pg_table) - pg_table = (pte_t *) __pa(get_zeroed_page(GFP_KERNEL)); - - __pmd_val_set(*pmd, PxD_FLAG_PRESENT | PxD_FLAG_VALID | (unsigned long) pg_table); - - /* now change pg_table to kernel virtual addresses */ - - pg_table = (pte_t *) __va(pg_table) + start_pte; - set_pte(pg_table, __mk_pte(address, PAGE_GATEWAY)); -} -EXPORT_SYMBOL(map_hpux_gateway_page); -#endif - -void __init paging_init(void) -{ - int i; - - setup_bootmem(); - pagetable_init(); - gateway_init(); - flush_cache_all_local(); /* start with known state */ - flush_tlb_all_local(NULL); - - for (i = 0; i < npmem_ranges; i++) { - unsigned long zones_size[MAX_NR_ZONES] = { 0, }; - - zones_size[ZONE_NORMAL] = pmem_ranges[i].pages; - -#ifdef CONFIG_DISCONTIGMEM - /* Need to initialize the pfnnid_map before we can initialize - the zone */ - { - int j; - for (j = (pmem_ranges[i].start_pfn >> PFNNID_SHIFT); - j <= ((pmem_ranges[i].start_pfn + pmem_ranges[i].pages) >> PFNNID_SHIFT); - j++) { - pfnnid_map[j] = i; - } - } -#endif - - free_area_init_node(i, zones_size, - pmem_ranges[i].start_pfn, NULL); - } -} - -#ifdef CONFIG_PA20 - -/* - * Currently, all PA20 chips have 18 bit protection IDs, which is the - * limiting factor (space ids are 32 bits). - */ - -#define NR_SPACE_IDS 262144 - -#else - -/* - * Currently we have a one-to-one relationship between space IDs and - * protection IDs. Older parisc chips (PCXS, PCXT, PCXL, PCXL2) only - * support 15 bit protection IDs, so that is the limiting factor. - * PCXT' has 18 bit protection IDs, but only 16 bit spaceids, so it's - * probably not worth the effort for a special case here. - */ - -#define NR_SPACE_IDS 32768 - -#endif /* !CONFIG_PA20 */ - -#define RECYCLE_THRESHOLD (NR_SPACE_IDS / 2) -#define SID_ARRAY_SIZE (NR_SPACE_IDS / (8 * sizeof(long))) - -static unsigned long space_id[SID_ARRAY_SIZE] = { 1 }; /* disallow space 0 */ -static unsigned long dirty_space_id[SID_ARRAY_SIZE]; -static unsigned long space_id_index; -static unsigned long free_space_ids = NR_SPACE_IDS - 1; -static unsigned long dirty_space_ids = 0; - -static DEFINE_SPINLOCK(sid_lock); - -unsigned long alloc_sid(void) -{ - unsigned long index; - - spin_lock(&sid_lock); - - if (free_space_ids == 0) { - if (dirty_space_ids != 0) { - spin_unlock(&sid_lock); - flush_tlb_all(); /* flush_tlb_all() calls recycle_sids() */ - spin_lock(&sid_lock); - } - BUG_ON(free_space_ids == 0); - } - - free_space_ids--; - - index = find_next_zero_bit(space_id, NR_SPACE_IDS, space_id_index); - space_id[index >> SHIFT_PER_LONG] |= (1L << (index & (BITS_PER_LONG - 1))); - space_id_index = index; - - spin_unlock(&sid_lock); - - return index << SPACEID_SHIFT; -} - -void free_sid(unsigned long spaceid) -{ - unsigned long index = spaceid >> SPACEID_SHIFT; - unsigned long *dirty_space_offset; - - dirty_space_offset = dirty_space_id + (index >> SHIFT_PER_LONG); - index &= (BITS_PER_LONG - 1); - - spin_lock(&sid_lock); - - BUG_ON(*dirty_space_offset & (1L << index)); /* attempt to free space id twice */ - - *dirty_space_offset |= (1L << index); - dirty_space_ids++; - - spin_unlock(&sid_lock); -} - - -#ifdef CONFIG_SMP -static void get_dirty_sids(unsigned long *ndirtyptr,unsigned long *dirty_array) -{ - int i; - - /* NOTE: sid_lock must be held upon entry */ - - *ndirtyptr = dirty_space_ids; - if (dirty_space_ids != 0) { - for (i = 0; i < SID_ARRAY_SIZE; i++) { - dirty_array[i] = dirty_space_id[i]; - dirty_space_id[i] = 0; - } - dirty_space_ids = 0; - } - - return; -} - -static void recycle_sids(unsigned long ndirty,unsigned long *dirty_array) -{ - int i; - - /* NOTE: sid_lock must be held upon entry */ - - if (ndirty != 0) { - for (i = 0; i < SID_ARRAY_SIZE; i++) { - space_id[i] ^= dirty_array[i]; - } - - free_space_ids += ndirty; - space_id_index = 0; - } -} - -#else /* CONFIG_SMP */ - -static void recycle_sids(void) -{ - int i; - - /* NOTE: sid_lock must be held upon entry */ - - if (dirty_space_ids != 0) { - for (i = 0; i < SID_ARRAY_SIZE; i++) { - space_id[i] ^= dirty_space_id[i]; - dirty_space_id[i] = 0; - } - - free_space_ids += dirty_space_ids; - dirty_space_ids = 0; - space_id_index = 0; - } -} -#endif - -/* - * flush_tlb_all() calls recycle_sids(), since whenever the entire tlb is - * purged, we can safely reuse the space ids that were released but - * not flushed from the tlb. - */ - -#ifdef CONFIG_SMP - -static unsigned long recycle_ndirty; -static unsigned long recycle_dirty_array[SID_ARRAY_SIZE]; -static unsigned int recycle_inuse; - -void flush_tlb_all(void) -{ - int do_recycle; - - do_recycle = 0; - spin_lock(&sid_lock); - if (dirty_space_ids > RECYCLE_THRESHOLD) { - BUG_ON(recycle_inuse); /* FIXME: Use a semaphore/wait queue here */ - get_dirty_sids(&recycle_ndirty,recycle_dirty_array); - recycle_inuse++; - do_recycle++; - } - spin_unlock(&sid_lock); - on_each_cpu(flush_tlb_all_local, NULL, 1); - if (do_recycle) { - spin_lock(&sid_lock); - recycle_sids(recycle_ndirty,recycle_dirty_array); - recycle_inuse = 0; - spin_unlock(&sid_lock); - } -} -#else -void flush_tlb_all(void) -{ - spin_lock(&sid_lock); - flush_tlb_all_local(NULL); - recycle_sids(); - spin_unlock(&sid_lock); -} -#endif - -#ifdef CONFIG_BLK_DEV_INITRD -void free_initrd_mem(unsigned long start, unsigned long end) -{ - if (start >= end) - return; - printk(KERN_INFO "Freeing initrd memory: %ldk freed\n", (end - start) >> 10); - for (; start < end; start += PAGE_SIZE) { - ClearPageReserved(virt_to_page(start)); - init_page_count(virt_to_page(start)); - free_page(start); - num_physpages++; - totalram_pages++; - } -} -#endif diff --git a/ANDROID_3.4.5/arch/parisc/mm/ioremap.c b/ANDROID_3.4.5/arch/parisc/mm/ioremap.c deleted file mode 100644 index 838d0259..00000000 --- a/ANDROID_3.4.5/arch/parisc/mm/ioremap.c +++ /dev/null @@ -1,99 +0,0 @@ -/* - * arch/parisc/mm/ioremap.c - * - * (C) Copyright 1995 1996 Linus Torvalds - * (C) Copyright 2001-2006 Helge Deller <deller@gmx.de> - * (C) Copyright 2005 Kyle McMartin <kyle@parisc-linux.org> - */ - -#include <linux/vmalloc.h> -#include <linux/errno.h> -#include <linux/module.h> -#include <linux/io.h> -#include <asm/pgalloc.h> - -/* - * Generic mapping function (not visible outside): - */ - -/* - * Remap an arbitrary physical address space into the kernel virtual - * address space. - * - * NOTE! We need to allow non-page-aligned mappings too: we will obviously - * have to convert them into an offset in a page-aligned mapping, but the - * caller shouldn't need to know that small detail. - */ -void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags) -{ - void __iomem *addr; - struct vm_struct *area; - unsigned long offset, last_addr; - pgprot_t pgprot; - -#ifdef CONFIG_EISA - unsigned long end = phys_addr + size - 1; - /* Support EISA addresses */ - if ((phys_addr >= 0x00080000 && end < 0x000fffff) || - (phys_addr >= 0x00500000 && end < 0x03bfffff)) { - phys_addr |= F_EXTEND(0xfc000000); - flags |= _PAGE_NO_CACHE; - } -#endif - - /* Don't allow wraparound or zero size */ - last_addr = phys_addr + size - 1; - if (!size || last_addr < phys_addr) - return NULL; - - /* - * Don't allow anybody to remap normal RAM that we're using.. - */ - if (phys_addr < virt_to_phys(high_memory)) { - char *t_addr, *t_end; - struct page *page; - - t_addr = __va(phys_addr); - t_end = t_addr + (size - 1); - - for (page = virt_to_page(t_addr); - page <= virt_to_page(t_end); page++) { - if(!PageReserved(page)) - return NULL; - } - } - - pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | - _PAGE_ACCESSED | flags); - - /* - * Mappings have to be page-aligned - */ - offset = phys_addr & ~PAGE_MASK; - phys_addr &= PAGE_MASK; - size = PAGE_ALIGN(last_addr + 1) - phys_addr; - - /* - * Ok, go for it.. - */ - area = get_vm_area(size, VM_IOREMAP); - if (!area) - return NULL; - - addr = (void __iomem *) area->addr; - if (ioremap_page_range((unsigned long)addr, (unsigned long)addr + size, - phys_addr, pgprot)) { - vfree(addr); - return NULL; - } - - return (void __iomem *) (offset + (char __iomem *)addr); -} -EXPORT_SYMBOL(__ioremap); - -void iounmap(const volatile void __iomem *addr) -{ - if (addr > high_memory) - return vfree((void *) (PAGE_MASK & (unsigned long __force) addr)); -} -EXPORT_SYMBOL(iounmap); |