diff options
author | David S. Miller <davem@davemloft.net> | 2009-04-16 17:35:26 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-04-16 17:35:26 -0700 |
commit | a54bfa40fd16aeb90bc556189221576f746f8567 (patch) | |
tree | 176bb7a99ffab5f42f0dd4e9671f335be3f3efa0 /arch/microblaze/include/asm/cacheflush.h | |
parent | fe957c40ec5e2763b9977c565beab3bde3aaf85b (diff) | |
parent | 134ffb4cad92a6aa534e55a9be145bca780a32c1 (diff) |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'arch/microblaze/include/asm/cacheflush.h')
-rw-r--r-- | arch/microblaze/include/asm/cacheflush.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/arch/microblaze/include/asm/cacheflush.h b/arch/microblaze/include/asm/cacheflush.h new file mode 100644 index 00000000000..3300b785049 --- /dev/null +++ b/arch/microblaze/include/asm/cacheflush.h @@ -0,0 +1,85 @@ +/* + * Copyright (C) 2007 PetaLogix + * Copyright (C) 2007 John Williams <john.williams@petalogix.com> + * based on v850 version which was + * Copyright (C) 2001,02,03 NEC Electronics Corporation + * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> + * + * 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. + * + */ + +#ifndef _ASM_MICROBLAZE_CACHEFLUSH_H +#define _ASM_MICROBLAZE_CACHEFLUSH_H + +/* Somebody depends on this; sigh... */ +#include <linux/mm.h> + +/* + * Cache handling functions. + * Microblaze has a write-through data cache, meaning that the data cache + * never needs to be flushed. The only flushing operations that are + * implemented are to invalidate the instruction cache. These are called + * after loading a user application into memory, we must invalidate the + * instruction cache to make sure we don't fetch old, bad code. + */ + +/* FIXME for LL-temac driver */ +#define invalidate_dcache_range(start, end) \ + __invalidate_dcache_range(start, end) + +#define flush_cache_all() __invalidate_cache_all() +#define flush_cache_mm(mm) do { } while (0) +#define flush_cache_range(vma, start, end) __invalidate_cache_all() +#define flush_cache_page(vma, vmaddr, pfn) do { } while (0) + +#define flush_dcache_range(start, end) __invalidate_dcache_range(start, end) +#define flush_dcache_page(page) do { } while (0) +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) + +#define flush_icache_range(start, len) __invalidate_icache_range(start, len) +#define flush_icache_page(vma, pg) do { } while (0) + +#define flush_cache_vmap(start, end) do { } while (0) +#define flush_cache_vunmap(start, end) do { } while (0) + +struct page; +struct mm_struct; +struct vm_area_struct; + +/* see arch/microblaze/kernel/cache.c */ +extern void __invalidate_icache_all(void); +extern void __invalidate_icache_range(unsigned long start, unsigned long end); +extern void __invalidate_icache_page(struct vm_area_struct *vma, + struct page *page); +extern void __invalidate_icache_user_range(struct vm_area_struct *vma, + struct page *page, + unsigned long adr, int len); +extern void __invalidate_cache_sigtramp(unsigned long addr); + +extern void __invalidate_dcache_all(void); +extern void __invalidate_dcache_range(unsigned long start, unsigned long end); +extern void __invalidate_dcache_page(struct vm_area_struct *vma, + struct page *page); +extern void __invalidate_dcache_user_range(struct vm_area_struct *vma, + struct page *page, + unsigned long adr, int len); + +extern inline void __invalidate_cache_all(void) +{ + __invalidate_icache_all(); + __invalidate_dcache_all(); +} + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ +do { memcpy((dst), (src), (len)); \ + flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \ +} while (0) + +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + memcpy((dst), (src), (len)) + +#endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */ |