Michal Simek | 8beb850 | 2009-03-27 14:25:16 +0100 | [diff] [blame] | 1 | /* |
Michal Simek | 46fb9be | 2009-05-26 16:30:28 +0200 | [diff] [blame] | 2 | * Copyright (C) 2007-2009 Michal Simek <monstr@monstr.eu> |
| 3 | * Copyright (C) 2007-2009 PetaLogix |
Michal Simek | 8beb850 | 2009-03-27 14:25:16 +0100 | [diff] [blame] | 4 | * Copyright (C) 2007 John Williams <john.williams@petalogix.com> |
| 5 | * based on v850 version which was |
| 6 | * Copyright (C) 2001,02,03 NEC Electronics Corporation |
| 7 | * Copyright (C) 2001,02,03 Miles Bader <miles@gnu.org> |
| 8 | * |
| 9 | * This file is subject to the terms and conditions of the GNU General |
| 10 | * Public License. See the file COPYING in the main directory of this |
| 11 | * archive for more details. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #ifndef _ASM_MICROBLAZE_CACHEFLUSH_H |
| 16 | #define _ASM_MICROBLAZE_CACHEFLUSH_H |
| 17 | |
| 18 | /* Somebody depends on this; sigh... */ |
| 19 | #include <linux/mm.h> |
| 20 | |
| 21 | /* |
| 22 | * Cache handling functions. |
| 23 | * Microblaze has a write-through data cache, meaning that the data cache |
| 24 | * never needs to be flushed. The only flushing operations that are |
| 25 | * implemented are to invalidate the instruction cache. These are called |
| 26 | * after loading a user application into memory, we must invalidate the |
| 27 | * instruction cache to make sure we don't fetch old, bad code. |
| 28 | */ |
| 29 | |
| 30 | /* FIXME for LL-temac driver */ |
| 31 | #define invalidate_dcache_range(start, end) \ |
| 32 | __invalidate_dcache_range(start, end) |
| 33 | |
| 34 | #define flush_cache_all() __invalidate_cache_all() |
| 35 | #define flush_cache_mm(mm) do { } while (0) |
| 36 | #define flush_cache_range(vma, start, end) __invalidate_cache_all() |
| 37 | #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) |
| 38 | |
| 39 | #define flush_dcache_range(start, end) __invalidate_dcache_range(start, end) |
| 40 | #define flush_dcache_page(page) do { } while (0) |
| 41 | #define flush_dcache_mmap_lock(mapping) do { } while (0) |
| 42 | #define flush_dcache_mmap_unlock(mapping) do { } while (0) |
| 43 | |
| 44 | #define flush_icache_range(start, len) __invalidate_icache_range(start, len) |
| 45 | #define flush_icache_page(vma, pg) do { } while (0) |
| 46 | |
Michal Simek | 46fb9be | 2009-05-26 16:30:28 +0200 | [diff] [blame] | 47 | #ifndef CONFIG_MMU |
| 48 | # define flush_icache_user_range(start, len) do { } while (0) |
| 49 | #else |
| 50 | # define flush_icache_user_range(vma, pg, adr, len) __invalidate_icache_all() |
| 51 | |
| 52 | # define flush_page_to_ram(page) do { } while (0) |
| 53 | |
| 54 | # define flush_icache() __invalidate_icache_all() |
| 55 | # define flush_cache_sigtramp(vaddr) \ |
| 56 | __invalidate_icache_range(vaddr, vaddr + 8) |
| 57 | |
| 58 | # define flush_dcache_mmap_lock(mapping) do { } while (0) |
| 59 | # define flush_dcache_mmap_unlock(mapping) do { } while (0) |
| 60 | |
| 61 | # define flush_cache_dup_mm(mm) do { } while (0) |
| 62 | #endif |
| 63 | |
Michal Simek | 8beb850 | 2009-03-27 14:25:16 +0100 | [diff] [blame] | 64 | #define flush_cache_vmap(start, end) do { } while (0) |
| 65 | #define flush_cache_vunmap(start, end) do { } while (0) |
| 66 | |
| 67 | struct page; |
| 68 | struct mm_struct; |
| 69 | struct vm_area_struct; |
| 70 | |
| 71 | /* see arch/microblaze/kernel/cache.c */ |
| 72 | extern void __invalidate_icache_all(void); |
| 73 | extern void __invalidate_icache_range(unsigned long start, unsigned long end); |
| 74 | extern void __invalidate_icache_page(struct vm_area_struct *vma, |
| 75 | struct page *page); |
| 76 | extern void __invalidate_icache_user_range(struct vm_area_struct *vma, |
| 77 | struct page *page, |
| 78 | unsigned long adr, int len); |
| 79 | extern void __invalidate_cache_sigtramp(unsigned long addr); |
| 80 | |
| 81 | extern void __invalidate_dcache_all(void); |
| 82 | extern void __invalidate_dcache_range(unsigned long start, unsigned long end); |
| 83 | extern void __invalidate_dcache_page(struct vm_area_struct *vma, |
| 84 | struct page *page); |
| 85 | extern void __invalidate_dcache_user_range(struct vm_area_struct *vma, |
| 86 | struct page *page, |
| 87 | unsigned long adr, int len); |
| 88 | |
| 89 | extern inline void __invalidate_cache_all(void) |
| 90 | { |
| 91 | __invalidate_icache_all(); |
| 92 | __invalidate_dcache_all(); |
| 93 | } |
| 94 | |
| 95 | #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
| 96 | do { memcpy((dst), (src), (len)); \ |
| 97 | flush_icache_range((unsigned) (dst), (unsigned) (dst) + (len)); \ |
| 98 | } while (0) |
| 99 | |
| 100 | #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
| 101 | memcpy((dst), (src), (len)) |
| 102 | |
| 103 | #endif /* _ASM_MICROBLAZE_CACHEFLUSH_H */ |