diff options
Diffstat (limited to 'arch/mips/include/asm/mach-ip32')
| -rw-r--r-- | arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h | 50 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-ip32/dma-coherence.h | 99 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-ip32/kmalloc.h | 11 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-ip32/mangle-port.h | 26 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-ip32/mc146818rtc.h | 36 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-ip32/war.h | 25 |
6 files changed, 247 insertions, 0 deletions
diff --git a/arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h b/arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h new file mode 100644 index 00000000..6782fcce --- /dev/null +++ b/arch/mips/include/asm/mach-ip32/cpu-feature-overrides.h @@ -0,0 +1,50 @@ +/* + * 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) 2005 Ilya A. Volynets-Evenbakh + * Copyright (C) 2005, 07 Ralf Baechle (ralf@linux-mips.org) + */ +#ifndef __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H +#define __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H + + +/* + * R5000 has an interesting "restriction": ll(d)/sc(d) + * instructions to XKPHYS region simply do uncached bus + * requests. This breaks all the atomic bitops functions. + * so, for 64bit IP32 kernel we just don't use ll/sc. + * This does not affect luserland. + */ +#if (defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_NEVADA)) && defined(CONFIG_64BIT) +#define cpu_has_llsc 0 +#else +#define cpu_has_llsc 1 +#endif + +/* Settings which are common for all ip32 CPUs */ +#define cpu_has_tlb 1 +#define cpu_has_4kex 1 +#define cpu_has_fpu 1 +#define cpu_has_32fpr 1 +#define cpu_has_counter 1 +#define cpu_has_mips16 0 +#define cpu_has_vce 0 +#define cpu_has_cache_cdex_s 0 +#define cpu_has_mcheck 0 +#define cpu_has_ejtag 0 +#define cpu_has_vtag_icache 0 +#define cpu_has_ic_fills_f_dc 0 +#define cpu_has_dsp 0 +#define cpu_has_4k_cache 1 +#define cpu_has_mipsmt 0 +#define cpu_has_userlocal 0 + + +#define cpu_has_mips32r1 0 +#define cpu_has_mips32r2 0 +#define cpu_has_mips64r1 0 +#define cpu_has_mips64r2 0 + +#endif /* __ASM_MACH_IP32_CPU_FEATURE_OVERRIDES_H */ diff --git a/arch/mips/include/asm/mach-ip32/dma-coherence.h b/arch/mips/include/asm/mach-ip32/dma-coherence.h new file mode 100644 index 00000000..c8fb5aac --- /dev/null +++ b/arch/mips/include/asm/mach-ip32/dma-coherence.h @@ -0,0 +1,99 @@ +/* + * 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) 2006 Ralf Baechle <ralf@linux-mips.org> + * + */ +#ifndef __ASM_MACH_IP32_DMA_COHERENCE_H +#define __ASM_MACH_IP32_DMA_COHERENCE_H + +#include <asm/ip32/crime.h> + +struct device; + +/* + * Few notes. + * 1. CPU sees memory as two chunks: 0-256M@0x0, and the rest @0x40000000+256M + * 2. PCI sees memory as one big chunk @0x0 (or we could use 0x40000000 for + * native-endian) + * 3. All other devices see memory as one big chunk at 0x40000000 + * 4. Non-PCI devices will pass NULL as struct device* + * + * Thus we translate differently, depending on device. + */ + +#define RAM_OFFSET_MASK 0x3fffffffUL + +static inline dma_addr_t plat_map_dma_mem(struct device *dev, void *addr, + size_t size) +{ + dma_addr_t pa = virt_to_phys(addr) & RAM_OFFSET_MASK; + + if (dev == NULL) + pa += CRIME_HI_MEM_BASE; + + return pa; +} + +static inline dma_addr_t plat_map_dma_mem_page(struct device *dev, + struct page *page) +{ + dma_addr_t pa; + + pa = page_to_phys(page) & RAM_OFFSET_MASK; + + if (dev == NULL) + pa += CRIME_HI_MEM_BASE; + + return pa; +} + +/* This is almost certainly wrong but it's what dma-ip32.c used to use */ +static inline unsigned long plat_dma_addr_to_phys(struct device *dev, + dma_addr_t dma_addr) +{ + unsigned long addr = dma_addr & RAM_OFFSET_MASK; + + if (dma_addr >= 256*1024*1024) + addr += CRIME_HI_MEM_BASE; + + return addr; +} + +static inline void plat_unmap_dma_mem(struct device *dev, dma_addr_t dma_addr, + size_t size, enum dma_data_direction direction) +{ +} + +static inline int plat_dma_supported(struct device *dev, u64 mask) +{ + /* + * we fall back to GFP_DMA when the mask isn't all 1s, + * so we can't guarantee allocations that must be + * within a tighter range than GFP_DMA.. + */ + if (mask < DMA_BIT_MASK(24)) + return 0; + + return 1; +} + +static inline void plat_extra_sync_for_device(struct device *dev) +{ + return; +} + +static inline int plat_dma_mapping_error(struct device *dev, + dma_addr_t dma_addr) +{ + return 0; +} + +static inline int plat_device_is_coherent(struct device *dev) +{ + return 0; /* IP32 is non-cohernet */ +} + +#endif /* __ASM_MACH_IP32_DMA_COHERENCE_H */ diff --git a/arch/mips/include/asm/mach-ip32/kmalloc.h b/arch/mips/include/asm/mach-ip32/kmalloc.h new file mode 100644 index 00000000..042ca926 --- /dev/null +++ b/arch/mips/include/asm/mach-ip32/kmalloc.h @@ -0,0 +1,11 @@ +#ifndef __ASM_MACH_IP32_KMALLOC_H +#define __ASM_MACH_IP32_KMALLOC_H + + +#if defined(CONFIG_CPU_R5000) || defined(CONFIG_CPU_RM7000) +#define ARCH_DMA_MINALIGN 32 +#else +#define ARCH_DMA_MINALIGN 128 +#endif + +#endif /* __ASM_MACH_IP32_KMALLOC_H */ diff --git a/arch/mips/include/asm/mach-ip32/mangle-port.h b/arch/mips/include/asm/mach-ip32/mangle-port.h new file mode 100644 index 00000000..f1d0f175 --- /dev/null +++ b/arch/mips/include/asm/mach-ip32/mangle-port.h @@ -0,0 +1,26 @@ +/* + * 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) 2003 Ladislav Michl + * Copyright (C) 2004 Ralf Baechle + */ +#ifndef __ASM_MACH_IP32_MANGLE_PORT_H +#define __ASM_MACH_IP32_MANGLE_PORT_H + +#define __swizzle_addr_b(port) ((port) ^ 3) +#define __swizzle_addr_w(port) ((port) ^ 2) +#define __swizzle_addr_l(port) (port) +#define __swizzle_addr_q(port) (port) + +# define ioswabb(a, x) (x) +# define __mem_ioswabb(a, x) (x) +# define ioswabw(a, x) (x) +# define __mem_ioswabw(a, x) cpu_to_le16(x) +# define ioswabl(a, x) (x) +# define __mem_ioswabl(a, x) cpu_to_le32(x) +# define ioswabq(a, x) (x) +# define __mem_ioswabq(a, x) cpu_to_le32(x) + +#endif /* __ASM_MACH_IP32_MANGLE_PORT_H */ diff --git a/arch/mips/include/asm/mach-ip32/mc146818rtc.h b/arch/mips/include/asm/mach-ip32/mc146818rtc.h new file mode 100644 index 00000000..6b6bab43 --- /dev/null +++ b/arch/mips/include/asm/mach-ip32/mc146818rtc.h @@ -0,0 +1,36 @@ +/* + * 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) 1998, 2001, 03 by Ralf Baechle + * Copyright (C) 2000 Harald Koerfgen + * + * RTC routines for IP32 style attached Dallas chip. + */ +#ifndef __ASM_MACH_IP32_MC146818RTC_H +#define __ASM_MACH_IP32_MC146818RTC_H + +#include <asm/ip32/mace.h> + +#define RTC_PORT(x) (0x70 + (x)) + +static unsigned char CMOS_READ(unsigned long addr) +{ + return mace->isa.rtc[addr << 8]; +} + +static inline void CMOS_WRITE(unsigned char data, unsigned long addr) +{ + mace->isa.rtc[addr << 8] = data; +} + +/* + * FIXME: Do it right. For now just assume that no one lives in 20th century + * and no O2 user in 22th century ;-) + */ +#define mc146818_decode_year(year) ((year) + 2000) + +#define RTC_ALWAYS_BCD 0 + +#endif /* __ASM_MACH_IP32_MC146818RTC_H */ diff --git a/arch/mips/include/asm/mach-ip32/war.h b/arch/mips/include/asm/mach-ip32/war.h new file mode 100644 index 00000000..d194056d --- /dev/null +++ b/arch/mips/include/asm/mach-ip32/war.h @@ -0,0 +1,25 @@ +/* + * 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) 2002, 2004, 2007 by Ralf Baechle <ralf@linux-mips.org> + */ +#ifndef __ASM_MIPS_MACH_IP32_WAR_H +#define __ASM_MIPS_MACH_IP32_WAR_H + +#define R4600_V1_INDEX_ICACHEOP_WAR 0 +#define R4600_V1_HIT_CACHEOP_WAR 0 +#define R4600_V2_HIT_CACHEOP_WAR 0 +#define R5432_CP0_INTERRUPT_WAR 0 +#define BCM1250_M3_WAR 0 +#define SIBYTE_1956_WAR 0 +#define MIPS4K_ICACHE_REFILL_WAR 0 +#define MIPS_CACHE_SYNC_WAR 0 +#define TX49XX_ICACHE_INDEX_INV_WAR 0 +#define RM9000_CDEX_SMP_WAR 0 +#define ICACHE_REFILLS_WORKAROUND_WAR 1 +#define R10000_LLSC_WAR 0 +#define MIPS34K_MISSED_ITLB_WAR 0 + +#endif /* __ASM_MIPS_MACH_IP32_WAR_H */ |