From: Paul Mundt Date: Mon, 27 Jul 2009 12:30:17 +0000 (+0900) Subject: sh: Use the now generic SH-4 clear/copy page ops for all MMU platforms. X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=0dfae7d5a21901b28ec0452d71be64adf5ea323e;p=linux-beck.git sh: Use the now generic SH-4 clear/copy page ops for all MMU platforms. Now that the SH-4 page clear/copy ops are generic, they can be used for all platforms with CONFIG_MMU=y. SH-5 remains the odd one out, but it too will gradually be converted over to using this interface. SH-3 platforms which do not contain aliases will see no impact from this change, while aliasing SH-3 platforms will get the same interface as SH-4. Signed-off-by: Paul Mundt --- diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index 4e360114269d..4c85d55847cc 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -49,7 +49,6 @@ static inline void flush_kernel_dcache_page(struct page *page) flush_dcache_page(page); } -#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); @@ -57,20 +56,6 @@ extern void copy_to_user_page(struct vm_area_struct *vma, extern void copy_from_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len); -#else -#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); \ - flush_icache_user_range(vma, page, vaddr, 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) -#endif #define flush_cache_vmap(start, end) flush_cache_all() #define flush_cache_vunmap(start, end) flush_cache_all() diff --git a/arch/sh/include/asm/page.h b/arch/sh/include/asm/page.h index 5208b7bfc24e..847eeabb9083 100644 --- a/arch/sh/include/asm/page.h +++ b/arch/sh/include/asm/page.h @@ -63,22 +63,23 @@ 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)) +#if defined(CONFIG_CPU_SH5) 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) || defined(CONFIG_SH7705_CACHE_32KB) + +#elif defined(CONFIG_MMU) 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) #define copy_user_page(to, from, vaddr, pg) copy_page(to, from) + #endif /* diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h index bef3ab7fc09e..ba2333216c5b 100644 --- a/arch/sh/include/asm/pgtable.h +++ b/arch/sh/include/asm/pgtable.h @@ -141,8 +141,7 @@ 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_SH7705_CACHE_32KB)) && defined(CONFIG_MMU) +#if defined(CONFIG_MMU) && !defined(CONFIG_CPU_SH5) extern void kmap_coherent_init(void); #else #define kmap_coherent_init() do { } while (0) diff --git a/arch/sh/mm/Makefile_32 b/arch/sh/mm/Makefile_32 index 5c04bbb08d36..62e280734dcb 100644 --- a/arch/sh/mm/Makefile_32 +++ b/arch/sh/mm/Makefile_32 @@ -15,7 +15,7 @@ endif obj-y += $(cache-y) mmu-y := tlb-nommu.o pg-nommu.o -mmu-$(CONFIG_MMU) := fault_32.o tlbflush_32.o ioremap_32.o +mmu-$(CONFIG_MMU) := fault_32.o tlbflush_32.o ioremap_32.o pg-mmu.o obj-y += $(mmu-y) obj-$(CONFIG_DEBUG_FS) += asids-debugfs.o @@ -29,10 +29,6 @@ tlb-$(CONFIG_CPU_SH3) := tlb-sh3.o tlb-$(CONFIG_CPU_SH4) := tlb-sh4.o tlb-$(CONFIG_CPU_HAS_PTEAEX) := tlb-pteaex.o obj-y += $(tlb-y) -ifndef CONFIG_CACHE_OFF -obj-$(CONFIG_CPU_SH4) += pg-sh4.o -obj-$(CONFIG_SH7705_CACHE_32KB) += pg-sh4.o -endif endif obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c index 86762092508c..3e2d7321b636 100644 --- a/arch/sh/mm/cache-sh5.c +++ b/arch/sh/mm/cache-sh5.c @@ -831,4 +831,21 @@ void clear_user_page(void *to, unsigned long address, struct page *page) else sh64_clear_user_page_coloured(to, address); } + +void copy_to_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long vaddr, void *dst, const void *src, + unsigned long len) +{ + flush_cache_page(vma, vaddr, page_to_pfn(page)); + memcpy(dst, src, len); + flush_icache_user_range(vma, page, vaddr, len); +} + +void copy_from_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long vaddr, void *dst, const void *src, + unsigned long len) +{ + flush_cache_page(vma, vaddr, page_to_pfn(page)); + memcpy(dst, src, len); +} #endif diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-mmu.c similarity index 83% rename from arch/sh/mm/pg-sh4.c rename to arch/sh/mm/pg-mmu.c index 4d93070b8220..356d2cdcb209 100644 --- a/arch/sh/mm/pg-sh4.c +++ b/arch/sh/mm/pg-mmu.c @@ -1,5 +1,5 @@ /* - * arch/sh/mm/pg-sh4.c + * arch/sh/mm/pg-mmu.c * * Copyright (C) 1999, 2000, 2002 Niibe Yutaka * Copyright (C) 2002 - 2009 Paul Mundt @@ -22,11 +22,13 @@ static pte_t *kmap_coherent_pte; void __init kmap_coherent_init(void) { +#if defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB) unsigned long vaddr; /* cache the first coherent kmap pte */ vaddr = __fix_to_virt(FIX_CMAP_BEGIN); kmap_coherent_pte = kmap_get_fixmap_pte(vaddr); +#endif } static inline void *kmap_coherent(struct page *page, unsigned long addr) @@ -62,13 +64,15 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len) { - if (page_mapped(page) && !test_bit(PG_dcache_dirty, &page->flags)) { + if (boot_cpu_data.dcache.n_aliases && page_mapped(page) && + !test_bit(PG_dcache_dirty, &page->flags)) { void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); memcpy(vto, src, len); kunmap_coherent(vto); } else { memcpy(dst, src, len); - set_bit(PG_dcache_dirty, &page->flags); + if (boot_cpu_data.dcache.n_aliases) + set_bit(PG_dcache_dirty, &page->flags); } if (vma->vm_flags & VM_EXEC) @@ -79,13 +83,15 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len) { - if (page_mapped(page) && !test_bit(PG_dcache_dirty, &page->flags)) { + if (boot_cpu_data.dcache.n_aliases && page_mapped(page) && + !test_bit(PG_dcache_dirty, &page->flags)) { void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); memcpy(dst, vfrom, len); kunmap_coherent(vfrom); } else { memcpy(dst, src, len); - set_bit(PG_dcache_dirty, &page->flags); + if (boot_cpu_data.dcache.n_aliases) + set_bit(PG_dcache_dirty, &page->flags); } } @@ -96,7 +102,8 @@ void copy_user_highpage(struct page *to, struct page *from, vto = kmap_atomic(to, KM_USER1); - if (page_mapped(from) && !test_bit(PG_dcache_dirty, &from->flags)) { + if (boot_cpu_data.dcache.n_aliases && page_mapped(from) && + !test_bit(PG_dcache_dirty, &from->flags)) { vfrom = kmap_coherent(from, vaddr); copy_page(vto, vfrom); kunmap_coherent(vfrom);