From 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Sat, 16 Apr 2005 15:20:36 -0700 Subject: Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip! --- include/asm-sparc64/cacheflush.h | 72 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) create mode 100644 include/asm-sparc64/cacheflush.h (limited to 'include/asm-sparc64/cacheflush.h') diff --git a/include/asm-sparc64/cacheflush.h b/include/asm-sparc64/cacheflush.h new file mode 100644 index 000000000000..86f02937ff1b --- /dev/null +++ b/include/asm-sparc64/cacheflush.h @@ -0,0 +1,72 @@ +#ifndef _SPARC64_CACHEFLUSH_H +#define _SPARC64_CACHEFLUSH_H + +#include +#include + +/* Flushing for D-cache alias handling is only needed if + * the page size is smaller than 16K. + */ +#if PAGE_SHIFT < 14 +#define DCACHE_ALIASING_POSSIBLE +#endif + +#ifndef __ASSEMBLY__ + +#include + +/* Cache flush operations. */ + +/* These are the same regardless of whether this is an SMP kernel or not. */ +#define flush_cache_mm(__mm) \ + do { if ((__mm) == current->mm) flushw_user(); } while(0) +#define flush_cache_range(vma, start, end) \ + flush_cache_mm((vma)->vm_mm) +#define flush_cache_page(vma, page, pfn) \ + flush_cache_mm((vma)->vm_mm) + +/* + * On spitfire, the icache doesn't snoop local stores and we don't + * use block commit stores (which invalidate icache lines) during + * module load, so we need this. + */ +extern void flush_icache_range(unsigned long start, unsigned long end); +extern void __flush_icache_page(unsigned long); + +extern void __flush_dcache_page(void *addr, int flush_icache); +extern void flush_dcache_page_impl(struct page *page); +#ifdef CONFIG_SMP +extern void smp_flush_dcache_page_impl(struct page *page, int cpu); +extern void flush_dcache_page_all(struct mm_struct *mm, struct page *page); +#else +#define smp_flush_dcache_page_impl(page,cpu) flush_dcache_page_impl(page) +#define flush_dcache_page_all(mm,page) flush_dcache_page_impl(page) +#endif + +extern void __flush_dcache_range(unsigned long start, unsigned long end); +extern void flush_dcache_page(struct page *page); + +#define flush_icache_page(vma, pg) do { } while(0) +#define flush_icache_user_range(vma,pg,adr,len) do { } while (0) + +#define copy_to_user_page(vma, page, vaddr, dst, src, len) \ + do { \ + flush_cache_page(vma, vaddr, page_to_pfn(page));\ + memcpy(dst, src, len); \ + } while (0) + +#define copy_from_user_page(vma, page, vaddr, dst, src, len) \ + do { \ + flush_cache_page(vma, vaddr, page_to_pfn(page));\ + memcpy(dst, src, len); \ + } while (0) + +#define flush_dcache_mmap_lock(mapping) do { } while (0) +#define flush_dcache_mmap_unlock(mapping) do { } while (0) + +#define flush_cache_vmap(start, end) do { } while (0) +#define flush_cache_vunmap(start, end) do { } while (0) + +#endif /* !__ASSEMBLY__ */ + +#endif /* _SPARC64_CACHEFLUSH_H */ -- cgit v1.2.3