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author | merge <null@invalid> | 2009-02-06 00:22:54 +0000 |
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committer | Andy Green <agreen@octopus.localdomain> | 2009-02-06 00:22:54 +0000 |
commit | d1dcdf5718977c93805f9300b6c79f039db84c8b (patch) | |
tree | 58a161db6cf8953e33c1c9294a9c720a1aa0ad76 /arch/m68k/include/asm/cacheflush_mm.h | |
parent | 9029dff1f370018665a6e2999632a34fd0518f4d (diff) |
MERGE-via-pending-tracking-hist-MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505
pending-tracking-hist top was MERGE-via-stable-tracking-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414-1233879505 / 1c405b6ccee468298e7ccbfd9a3a3f4d123207b0 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-stable-tracking-hist-MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414
stable-tracking-hist top was MERGE-via-mokopatches-tracking-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011-1233879414 / 71be0a45396066b1f8f27f8f4f87937247a129e1 ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-mokopatches-tracking-hist-MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011
mokopatches-tracking-hist top was MERGE-via-master-MERGE-via-master-hist-1232625318-1233879011 / 1be1b01373f572a02c6f1f99863c8c11ed2f9f5b ... parent commitmessage:
From: merge <null@invalid>
MERGE-via-master-MERGE-via-master-hist-1232625318
master top was MERGE-via-master-hist-1232625318 / dd4b117123ae66451695810017eb72fbdfc05df5 ... parent commitmessage:
From: merge <null@invalid>
MERGE-master-patchset-edits
Diffstat (limited to 'arch/m68k/include/asm/cacheflush_mm.h')
-rw-r--r-- | arch/m68k/include/asm/cacheflush_mm.h | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/arch/m68k/include/asm/cacheflush_mm.h b/arch/m68k/include/asm/cacheflush_mm.h new file mode 100644 index 00000000000..16bf375fdbe --- /dev/null +++ b/arch/m68k/include/asm/cacheflush_mm.h @@ -0,0 +1,156 @@ +#ifndef _M68K_CACHEFLUSH_H +#define _M68K_CACHEFLUSH_H + +#include <linux/mm.h> + +/* cache code */ +#define FLUSH_I_AND_D (0x00000808) +#define FLUSH_I (0x00000008) + +/* + * Cache handling functions + */ + +static inline void flush_icache(void) +{ + if (CPU_IS_040_OR_060) + asm volatile ( "nop\n" + " .chip 68040\n" + " cpusha %bc\n" + " .chip 68k"); + else { + unsigned long tmp; + asm volatile ( "movec %%cacr,%0\n" + " or.w %1,%0\n" + " movec %0,%%cacr" + : "=&d" (tmp) + : "id" (FLUSH_I)); + } +} + +/* + * invalidate the cache for the specified memory range. + * It starts at the physical address specified for + * the given number of bytes. + */ +extern void cache_clear(unsigned long paddr, int len); +/* + * push any dirty cache in the specified memory range. + * It starts at the physical address specified for + * the given number of bytes. + */ +extern void cache_push(unsigned long paddr, int len); + +/* + * push and invalidate pages in the specified user virtual + * memory range. + */ +extern void cache_push_v(unsigned long vaddr, int len); + +/* This is needed whenever the virtual mapping of the current + process changes. */ +#define __flush_cache_all() \ +({ \ + if (CPU_IS_040_OR_060) \ + __asm__ __volatile__("nop\n\t" \ + ".chip 68040\n\t" \ + "cpusha %dc\n\t" \ + ".chip 68k"); \ + else { \ + unsigned long _tmp; \ + __asm__ __volatile__("movec %%cacr,%0\n\t" \ + "orw %1,%0\n\t" \ + "movec %0,%%cacr" \ + : "=&d" (_tmp) \ + : "di" (FLUSH_I_AND_D)); \ + } \ +}) + +#define __flush_cache_030() \ +({ \ + if (CPU_IS_020_OR_030) { \ + unsigned long _tmp; \ + __asm__ __volatile__("movec %%cacr,%0\n\t" \ + "orw %1,%0\n\t" \ + "movec %0,%%cacr" \ + : "=&d" (_tmp) \ + : "di" (FLUSH_I_AND_D)); \ + } \ +}) + +#define flush_cache_all() __flush_cache_all() + +#define flush_cache_vmap(start, end) flush_cache_all() +#define flush_cache_vunmap(start, end) flush_cache_all() + +static inline void flush_cache_mm(struct mm_struct *mm) +{ + if (mm == current->mm) + __flush_cache_030(); +} + +#define flush_cache_dup_mm(mm) flush_cache_mm(mm) + +/* flush_cache_range/flush_cache_page must be macros to avoid + a dependency on linux/mm.h, which includes this file... */ +static inline void flush_cache_range(struct vm_area_struct *vma, + unsigned long start, + unsigned long end) +{ + if (vma->vm_mm == current->mm) + __flush_cache_030(); +} + +static inline void flush_cache_page(struct vm_area_struct *vma, unsigned long vmaddr, unsigned long pfn) +{ + if (vma->vm_mm == current->mm) + __flush_cache_030(); +} + + +/* Push the page at kernel virtual address and clear the icache */ +/* RZ: use cpush %bc instead of cpush %dc, cinv %ic */ +static inline void __flush_page_to_ram(void *vaddr) +{ + if (CPU_IS_040_OR_060) { + __asm__ __volatile__("nop\n\t" + ".chip 68040\n\t" + "cpushp %%bc,(%0)\n\t" + ".chip 68k" + : : "a" (__pa(vaddr))); + } else { + unsigned long _tmp; + __asm__ __volatile__("movec %%cacr,%0\n\t" + "orw %1,%0\n\t" + "movec %0,%%cacr" + : "=&d" (_tmp) + : "di" (FLUSH_I)); + } +} + +#define flush_dcache_page(page) __flush_page_to_ram(page_address(page)) +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) +#define flush_icache_page(vma, page) __flush_page_to_ram(page_address(page)) + +extern void flush_icache_user_range(struct vm_area_struct *vma, struct page *page, + unsigned long addr, int len); +extern void flush_icache_range(unsigned long address, unsigned long endaddr); + +static inline void copy_to_user_page(struct vm_area_struct *vma, + struct page *page, unsigned long vaddr, + void *dst, void *src, int len) +{ + flush_cache_page(vma, vaddr, page_to_pfn(page)); + memcpy(dst, src, len); + flush_icache_user_range(vma, page, vaddr, len); +} +static inline void copy_from_user_page(struct vm_area_struct *vma, + struct page *page, unsigned long vaddr, + void *dst, void *src, int len) +{ + flush_cache_page(vma, vaddr, page_to_pfn(page)); + memcpy(dst, src, len); +} + +#endif /* _M68K_CACHEFLUSH_H */ |