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Diffstat (limited to 'arch/blackfin/include/asm/cacheflush.h')
-rw-r--r-- | arch/blackfin/include/asm/cacheflush.h | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/arch/blackfin/include/asm/cacheflush.h b/arch/blackfin/include/asm/cacheflush.h deleted file mode 100644 index 9a5b2c572ebf..000000000000 --- a/arch/blackfin/include/asm/cacheflush.h +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Blackfin low-level cache routines - * - * Copyright 2004-2009 Analog Devices Inc. - * - * Licensed under the GPL-2 or later. - */ - -#ifndef _BLACKFIN_CACHEFLUSH_H -#define _BLACKFIN_CACHEFLUSH_H - -#include <asm/blackfin.h> /* for SSYNC() */ -#include <asm/sections.h> /* for _ramend */ -#ifdef CONFIG_SMP -#include <asm/smp.h> -#endif - -extern void blackfin_icache_flush_range(unsigned long start_address, unsigned long end_address); -extern void blackfin_dcache_flush_range(unsigned long start_address, unsigned long end_address); -extern void blackfin_dcache_invalidate_range(unsigned long start_address, unsigned long end_address); -extern void blackfin_dflush_page(void *page); -extern void blackfin_invalidate_entire_dcache(void); -extern void blackfin_invalidate_entire_icache(void); - -#define flush_dcache_mmap_lock(mapping) do { } while (0) -#define flush_dcache_mmap_unlock(mapping) do { } while (0) -#define flush_cache_mm(mm) do { } while (0) -#define flush_cache_range(vma, start, end) do { } while (0) -#define flush_cache_page(vma, vmaddr) do { } while (0) -#define flush_cache_vmap(start, end) do { } while (0) -#define flush_cache_vunmap(start, end) do { } while (0) - -#ifdef CONFIG_SMP -#define flush_icache_range_others(start, end) \ - smp_icache_flush_range_others((start), (end)) -#else -#define flush_icache_range_others(start, end) do { } while (0) -#endif - -static inline void flush_icache_range(unsigned start, unsigned end) -{ -#if defined(CONFIG_BFIN_EXTMEM_WRITEBACK) - if (end <= physical_mem_end) - blackfin_dcache_flush_range(start, end); -#endif -#if defined(CONFIG_BFIN_L2_WRITEBACK) - if (start >= L2_START && end <= L2_START + L2_LENGTH) - blackfin_dcache_flush_range(start, end); -#endif - - /* Make sure all write buffers in the data side of the core - * are flushed before trying to invalidate the icache. This - * needs to be after the data flush and before the icache - * flush so that the SSYNC does the right thing in preventing - * the instruction prefetcher from hitting things in cached - * memory at the wrong time -- it runs much further ahead than - * the pipeline. - */ - SSYNC(); -#if defined(CONFIG_BFIN_EXTMEM_ICACHEABLE) - if (end <= physical_mem_end) { - blackfin_icache_flush_range(start, end); - flush_icache_range_others(start, end); - } -#endif -#if defined(CONFIG_BFIN_L2_ICACHEABLE) - if (start >= L2_START && end <= L2_START + L2_LENGTH) { - blackfin_icache_flush_range(start, end); - flush_icache_range_others(start, end); - } -#endif -} - -#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) - -#if defined(CONFIG_BFIN_DCACHE) -# define invalidate_dcache_range(start,end) blackfin_dcache_invalidate_range((start), (end)) -#else -# define invalidate_dcache_range(start,end) do { } while (0) -#endif -#if defined(CONFIG_BFIN_EXTMEM_WRITEBACK) || defined(CONFIG_BFIN_L2_WRITEBACK) -# define flush_dcache_range(start,end) blackfin_dcache_flush_range((start), (end)) -#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1 -# define flush_dcache_page(page) blackfin_dflush_page(page_address(page)) -#else -# define flush_dcache_range(start,end) do { } while (0) -#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 0 -# define flush_dcache_page(page) do { } while (0) -#endif - -extern unsigned long reserved_mem_dcache_on; -extern unsigned long reserved_mem_icache_on; - -static inline int bfin_addr_dcacheable(unsigned long addr) -{ -#ifdef CONFIG_BFIN_EXTMEM_DCACHEABLE - if (addr < (_ramend - DMA_UNCACHED_REGION)) - return 1; -#endif - - if (reserved_mem_dcache_on && - addr >= _ramend && addr < physical_mem_end) - return 1; - -#ifdef CONFIG_BFIN_L2_DCACHEABLE - if (addr >= L2_START && addr < L2_START + L2_LENGTH) - return 1; -#endif - - return 0; -} - -#endif /* _BLACKFIN_ICACHEFLUSH_H */ |