diff options
| author | Paul Mundt <lethal@linux-sh.org> | 2009-07-27 15:53:22 +0400 |
|---|---|---|
| committer | Paul Mundt <lethal@linux-sh.org> | 2009-07-27 15:53:22 +0400 |
| commit | dfff0fa65ab15db45acd64b3189787d37ab163cd (patch) | |
| tree | c888641a25f83fb75a4886f6c1e63c44d889fed4 /arch/sh/include | |
| parent | 2277ab4a1df50e05bc732fe9488d4e902bb8399a (diff) | |
| download | linux-dfff0fa65ab15db45acd64b3189787d37ab163cd.tar.xz | |
sh: wire up clear_user_highpage() for sh4, convert sh7705.
This wires up clear_user_highpage() on SH-4 and subsequently converts the
SH7705 32kB cache mode over to using it. Now that the SH-4 implementation
handles all of the dcache purging directly in the aliasing case, there is
no need to do this in the default clear_page() implementation.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/include')
| -rw-r--r-- | arch/sh/include/asm/cacheflush.h | 2 | ||||
| -rw-r--r-- | arch/sh/include/asm/page.h | 12 | ||||
| -rw-r--r-- | arch/sh/include/asm/pgtable.h | 3 |
3 files changed, 11 insertions, 6 deletions
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index 4c5462daa74c..4e360114269d 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -49,7 +49,7 @@ static inline void flush_kernel_dcache_page(struct page *page) flush_dcache_page(page); } -#if defined(CONFIG_CPU_SH4) && !defined(CONFIG_CACHE_OFF) +#if (defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)) && !defined(CONFIG_CACHE_OFF) extern void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len); diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h index a31ab40040f0..5208b7bfc24e 100644 --- a/arch/sh/include/asm/page.h +++ b/arch/sh/include/asm/page.h @@ -56,21 +56,25 @@ pages_do_alias(unsigned long addr1, unsigned long addr2) return (addr1 ^ addr2) & shm_align_mask; } -extern void clear_page(void *to); + +#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE) extern void copy_page(void *to, void *from); +struct page; +struct vm_area_struct; + #if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU) && \ (defined(CONFIG_CPU_SH5) || defined(CONFIG_CPU_SH4) || \ defined(CONFIG_SH7705_CACHE_32KB)) -struct page; -struct vm_area_struct; extern void clear_user_page(void *to, unsigned long address, struct page *page); extern void copy_user_page(void *to, void *from, unsigned long address, struct page *page); -#if defined(CONFIG_CPU_SH4) +#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB) extern void copy_user_highpage(struct page *to, struct page *from, unsigned long vaddr, struct vm_area_struct *vma); #define __HAVE_ARCH_COPY_USER_HIGHPAGE +extern void clear_user_highpage(struct page *page, unsigned long vaddr); +#define clear_user_highpage clear_user_highpage #endif #else #define clear_user_page(page, vaddr, pg) clear_page(page) diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h index d9f68f9c3cb3..bef3ab7fc09e 100644 --- a/arch/sh/include/asm/pgtable.h +++ b/arch/sh/include/asm/pgtable.h @@ -141,7 +141,8 @@ extern void paging_init(void); extern void page_table_range_init(unsigned long start, unsigned long end, pgd_t *pgd); -#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_CPU_SH4) && defined(CONFIG_MMU) +#if !defined(CONFIG_CACHE_OFF) && (defined(CONFIG_CPU_SH4) || \ + defined(CONFIG_SH7705_CACHE_32KB)) && defined(CONFIG_MMU) extern void kmap_coherent_init(void); #else #define kmap_coherent_init() do { } while (0) |