1#ifndef _SPARC64_CACHEFLUSH_H
 2#define _SPARC64_CACHEFLUSH_H
 3
 4#include <asm/page.h>
 5
 6#ifndef __ASSEMBLY__
 7
 8#include <linux/mm.h>
 9
10/* Cache flush operations. */
11#define flushw_all()	__asm__ __volatile__("flushw")
12
13extern void __flushw_user(void);
14#define flushw_user() __flushw_user()
15
16#define flush_user_windows flushw_user
17#define flush_register_windows flushw_all
18
19/* These are the same regardless of whether this is an SMP kernel or not. */
20#define flush_cache_mm(__mm) \
21	do { if ((__mm) == current->mm) flushw_user(); } while(0)
22#define flush_cache_dup_mm(mm) flush_cache_mm(mm)
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);
47#define ARCH_IMPLEMENTS_FLUSH_DCACHE_PAGE 1
48extern void flush_dcache_page(struct page *page);
49
50#define flush_icache_page(vma, pg)	do { } while(0)
51#define flush_icache_user_range(vma,pg,adr,len)	do { } while (0)
52
53extern void flush_ptrace_access(struct vm_area_struct *, struct page *,
54				unsigned long uaddr, void *kaddr,
55				unsigned long len, int write);
56
57#define copy_to_user_page(vma, page, vaddr, dst, src, len)		\
58	do {								\
59		flush_cache_page(vma, vaddr, page_to_pfn(page));	\
60		memcpy(dst, src, len);					\
61		flush_ptrace_access(vma, page, vaddr, src, len, 0);	\
62	} while (0)
63
64#define copy_from_user_page(vma, page, vaddr, dst, src, len) 		\
65	do {								\
66		flush_cache_page(vma, vaddr, page_to_pfn(page));	\
67		memcpy(dst, src, len);					\
68		flush_ptrace_access(vma, page, vaddr, dst, len, 1);	\
69	} while (0)
70
71#define flush_dcache_mmap_lock(mapping)		do { } while (0)
72#define flush_dcache_mmap_unlock(mapping)	do { } while (0)
73
74#define flush_cache_vmap(start, end)		do { } while (0)
75#define flush_cache_vunmap(start, end)		do { } while (0)
76
77#ifdef CONFIG_DEBUG_PAGEALLOC
78/* internal debugging function */
79void kernel_map_pages(struct page *page, int numpages, int enable);
80#endif
81
82#endif /* !__ASSEMBLY__ */
83
84#endif /* _SPARC64_CACHEFLUSH_H */