1 /**************************************************************************** 2 **************************************************************************** 3 *** 4 *** This header was automatically generated from a Linux kernel header 5 *** of the same name, to make information necessary for userspace to 6 *** call into the kernel available to libc. It contains only constants, 7 *** structures, and macros generated from the original header, and thus, 8 *** contains no copyrightable information. 9 *** 10 **************************************************************************** 11 ****************************************************************************/ 12 #ifndef _ASMARM_CACHEFLUSH_H 13 #define _ASMARM_CACHEFLUSH_H 14 15 #include <linux/sched.h> 16 #include <linux/mm.h> 17 18 #include <asm/glue.h> 19 #include <asm/shmparam.h> 20 21 #define CACHE_COLOUR(vaddr) ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT) 22 23 #undef _CACHE 24 #undef MULTI_CACHE 25 26 #if !defined(_CACHE) && !defined(MULTI_CACHE) 27 #error Unknown cache maintainence model 28 #endif 29 30 #define PG_dcache_dirty PG_arch_1 31 32 struct cpu_cache_fns { 33 void (*flush_kern_all)(void); 34 void (*flush_user_all)(void); 35 void (*flush_user_range)(unsigned long, unsigned long, unsigned int); 36 37 void (*coherent_kern_range)(unsigned long, unsigned long); 38 void (*coherent_user_range)(unsigned long, unsigned long); 39 void (*flush_kern_dcache_page)(void *); 40 41 void (*dma_inv_range)(unsigned long, unsigned long); 42 void (*dma_clean_range)(unsigned long, unsigned long); 43 void (*dma_flush_range)(unsigned long, unsigned long); 44 }; 45 46 #ifdef MULTI_CACHE 47 48 #define __cpuc_flush_kern_all cpu_cache.flush_kern_all 49 #define __cpuc_flush_user_all cpu_cache.flush_user_all 50 #define __cpuc_flush_user_range cpu_cache.flush_user_range 51 #define __cpuc_coherent_kern_range cpu_cache.coherent_kern_range 52 #define __cpuc_coherent_user_range cpu_cache.coherent_user_range 53 #define __cpuc_flush_dcache_page cpu_cache.flush_kern_dcache_page 54 55 #define dmac_inv_range cpu_cache.dma_inv_range 56 #define dmac_clean_range cpu_cache.dma_clean_range 57 #define dmac_flush_range cpu_cache.dma_flush_range 58 59 #else 60 61 #define __cpuc_flush_kern_all __glue(_CACHE,_flush_kern_cache_all) 62 #define __cpuc_flush_user_all __glue(_CACHE,_flush_user_cache_all) 63 #define __cpuc_flush_user_range __glue(_CACHE,_flush_user_cache_range) 64 #define __cpuc_coherent_kern_range __glue(_CACHE,_coherent_kern_range) 65 #define __cpuc_coherent_user_range __glue(_CACHE,_coherent_user_range) 66 #define __cpuc_flush_dcache_page __glue(_CACHE,_flush_kern_dcache_page) 67 68 #define dmac_inv_range __glue(_CACHE,_dma_inv_range) 69 #define dmac_clean_range __glue(_CACHE,_dma_clean_range) 70 #define dmac_flush_range __glue(_CACHE,_dma_flush_range) 71 72 #endif 73 74 #define flush_cache_vmap(start, end) flush_cache_all() 75 #define flush_cache_vunmap(start, end) flush_cache_all() 76 77 #define copy_to_user_page(vma, page, vaddr, dst, src, len) do { memcpy(dst, src, len); flush_ptrace_access(vma, page, vaddr, dst, len, 1); } while (0) 78 79 #define copy_from_user_page(vma, page, vaddr, dst, src, len) do { memcpy(dst, src, len); } while (0) 80 81 #define flush_cache_all() __cpuc_flush_kern_all() 82 #define flush_cache_user_range(vma,start,end) __cpuc_coherent_user_range((start) & PAGE_MASK, PAGE_ALIGN(end)) 83 #define flush_icache_range(s,e) __cpuc_coherent_kern_range(s,e) 84 #define clean_dcache_area(start,size) cpu_dcache_clean_area(start, size) 85 86 #define flush_dcache_mmap_lock(mapping) write_lock_irq(&(mapping)->tree_lock) 87 #define flush_dcache_mmap_unlock(mapping) write_unlock_irq(&(mapping)->tree_lock) 88 89 #define flush_icache_user_range(vma,page,addr,len) flush_dcache_page(page) 90 91 #define flush_icache_page(vma,page) do { } while (0) 92 93 #define __cacheid_present(val) (val != read_cpuid(CPUID_ID)) 94 #define __cacheid_vivt(val) ((val & (15 << 25)) != (14 << 25)) 95 #define __cacheid_vipt(val) ((val & (15 << 25)) == (14 << 25)) 96 #define __cacheid_vipt_nonaliasing(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25)) 97 #define __cacheid_vipt_aliasing(val) ((val & (15 << 25 | 1 << 23)) == (14 << 25 | 1 << 23)) 98 99 #define cache_is_vivt() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); (!__cacheid_present(__val)) || __cacheid_vivt(__val); }) 100 101 #define cache_is_vipt() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); __cacheid_present(__val) && __cacheid_vipt(__val); }) 102 103 #define cache_is_vipt_nonaliasing() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); __cacheid_present(__val) && __cacheid_vipt_nonaliasing(__val); }) 104 105 #define cache_is_vipt_aliasing() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); __cacheid_present(__val) && __cacheid_vipt_aliasing(__val); }) 106 107 #endif 108