Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
1#ifndef _SPARC64_CACHEFLUSH_H
2#define _SPARC64_CACHEFLUSH_H
3
4#include <linux/config.h>
5#include <asm/page.h>
6
7/* Flushing for D-cache alias handling is only needed if
8 * the page size is smaller than 16K.
9 */
10#if PAGE_SHIFT < 14
11#define DCACHE_ALIASING_POSSIBLE
12#endif
13
14#ifndef __ASSEMBLY__
15
16#include <linux/mm.h>
17
18/* Cache flush operations. */
19
20/* These are the same regardless of whether this is an SMP kernel or not. */
21#define flush_cache_mm(__mm) \
22 do { if ((__mm) == current->mm) flushw_user(); } while(0)
23#define flush_cache_range(vma, start, end) \
24 flush_cache_mm((vma)->vm_mm)
25#define flush_cache_page(vma, page, pfn) \
26 flush_cache_mm((vma)->vm_mm)
27
28/*
29 * On spitfire, the icache doesn't snoop local stores and we don't
30 * use block commit stores (which invalidate icache lines) during
31 * module load, so we need this.
32 */
33extern void flush_icache_range(unsigned long start, unsigned long end);
34extern void __flush_icache_page(unsigned long);
35
36extern void __flush_dcache_page(void *addr, int flush_icache);
37extern void flush_dcache_page_impl(struct page *page);
38#ifdef CONFIG_SMP
39extern void smp_flush_dcache_page_impl(struct page *page, int cpu);
40extern void flush_dcache_page_all(struct mm_struct *mm, struct page *page);
41#else
42#define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page)
43#define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page)
44#endif
45
46extern void __flush_dcache_range(unsigned long start, unsigned long end);
47extern void flush_dcache_page(struct page *page);
48
49#define flush_icache_page(vma, pg) do { } while(0)
50#define flush_icache_user_range(vma,pg,adr,len) do { } while (0)
51
52extern void flush_ptrace_access(struct vm_area_struct *, struct page *,
53 unsigned long uaddr, void *kaddr,
54 unsigned long len, int write);
55
56#define copy_to_user_page(vma, page, vaddr, dst, src, len) \
57 do { \
58 flush_cache_page(vma, vaddr, page_to_pfn(page)); \
59 memcpy(dst, src, len); \
60 flush_ptrace_access(vma, page, vaddr, src, len, 0); \
61 } while (0)
62
63#define copy_from_user_page(vma, page, vaddr, dst, src, len) \
64 do { \
65 flush_cache_page(vma, vaddr, page_to_pfn(page)); \
66 memcpy(dst, src, len); \
67 flush_ptrace_access(vma, page, vaddr, dst, len, 1); \
68 } while (0)
69
70#define flush_dcache_mmap_lock(mapping) do { } while (0)
71#define flush_dcache_mmap_unlock(mapping) do { } while (0)
72
73#define flush_cache_vmap(start, end) do { } while (0)
74#define flush_cache_vunmap(start, end) do { } while (0)
75
76#endif /* !__ASSEMBLY__ */
77
78#endif /* _SPARC64_CACHEFLUSH_H */