1 /****************************************************************************
2 ****************************************************************************
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.
10 ****************************************************************************
11 ****************************************************************************/
12 #ifndef _ASMARM_CACHEFLUSH_H
13 #define _ASMARM_CACHEFLUSH_H
15 #include <linux/sched.h>
19 #include <asm/shmparam.h>
21 #define CACHE_COLOUR(vaddr) ((vaddr & (SHMLBA - 1)) >> PAGE_SHIFT)
26 #if !defined(_CACHE) && !defined(MULTI_CACHE)
27 #error Unknown cache maintainence model
30 #define PG_dcache_dirty PG_arch_1
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);
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 *);
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);
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
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
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)
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)
74 #define flush_cache_vmap(start, end) flush_cache_all()
75 #define flush_cache_vunmap(start, end) flush_cache_all()
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)
79 #define copy_from_user_page(vma, page, vaddr, dst, src, len) do { memcpy(dst, src, len); } while (0)
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)
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)
89 #define flush_icache_user_range(vma,page,addr,len) flush_dcache_page(page)
91 #define flush_icache_page(vma,page) do { } while (0)
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))
99 #define cache_is_vivt() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); (!__cacheid_present(__val)) || __cacheid_vivt(__val); })
101 #define cache_is_vipt() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); __cacheid_present(__val) && __cacheid_vipt(__val); })
103 #define cache_is_vipt_nonaliasing() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); __cacheid_present(__val) && __cacheid_vipt_nonaliasing(__val); })
105 #define cache_is_vipt_aliasing() ({ unsigned int __val = read_cpuid(CPUID_CACHETYPE); __cacheid_present(__val) && __cacheid_vipt_aliasing(__val); })