| /* |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version |
| * 2 of the License, or (at your option) any later version. |
| */ |
| #ifndef _ASM_POWERPC_CACHEFLUSH_H |
| #define _ASM_POWERPC_CACHEFLUSH_H |
| |
| #ifdef __KERNEL__ |
| |
| #include <linux/mm.h> |
| #include <asm/cputable.h> |
| |
| /* |
| * No cache flushing is required when address mappings are changed, |
| * because the caches on PowerPCs are physically addressed. |
| */ |
| #define flush_cache_all() do { } while (0) |
| #define flush_cache_mm(mm) do { } while (0) |
| #define flush_cache_dup_mm(mm) do { } while (0) |
| #define flush_cache_range(vma, start, end) do { } while (0) |
| #define flush_cache_page(vma, vmaddr, pfn) do { } while (0) |
| #define flush_icache_page(vma, page) do { } while (0) |
| #define flush_cache_vmap(start, end) do { } while (0) |
| #define flush_cache_vunmap(start, end) do { } while (0) |
| |
| #define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 |
| extern void flush_dcache_page(struct page *page); |
| #define flush_dcache_mmap_lock(mapping) do { } while (0) |
| #define flush_dcache_mmap_unlock(mapping) do { } while (0) |
| |
| extern void flush_icache_range(unsigned long, unsigned long); |
| extern void flush_icache_user_range(struct vm_area_struct *vma, |
| struct page *page, unsigned long addr, |
| int len); |
| extern void __flush_dcache_icache(void *page_va); |
| extern void flush_dcache_icache_page(struct page *page); |
| #if defined(CONFIG_PPC32) && !defined(CONFIG_BOOKE) |
| extern void __flush_dcache_icache_phys(unsigned long physaddr); |
| #else |
| static inline void __flush_dcache_icache_phys(unsigned long physaddr) |
| { |
| BUG(); |
| } |
| #endif |
| |
| extern void flush_dcache_range(unsigned long start, unsigned long stop); |
| #ifdef CONFIG_PPC32 |
| extern void clean_dcache_range(unsigned long start, unsigned long stop); |
| extern void invalidate_dcache_range(unsigned long start, unsigned long stop); |
| #endif /* CONFIG_PPC32 */ |
| #ifdef CONFIG_PPC64 |
| extern void flush_inval_dcache_range(unsigned long start, unsigned long stop); |
| extern void flush_dcache_phys_range(unsigned long start, unsigned long stop); |
| #endif |
| |
| #define copy_to_user_page(vma, page, vaddr, dst, src, len) \ |
| do { \ |
| memcpy(dst, src, len); \ |
| flush_icache_user_range(vma, page, vaddr, len); \ |
| } while (0) |
| #define copy_from_user_page(vma, page, vaddr, dst, src, len) \ |
| memcpy(dst, src, len) |
| |
| #endif /* __KERNEL__ */ |
| |
| #endif /* _ASM_POWERPC_CACHEFLUSH_H */ |