diff options
| -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 | ||||
| -rw-r--r-- | arch/sh/kernel/sh_ksyms_32.c | 6 | ||||
| -rw-r--r-- | arch/sh/lib/clear_page.S | 46 | ||||
| -rw-r--r-- | arch/sh/mm/Makefile_32 | 2 | ||||
| -rw-r--r-- | arch/sh/mm/pg-nommu.c | 7 | ||||
| -rw-r--r-- | arch/sh/mm/pg-sh4.c | 29 | ||||
| -rw-r--r-- | arch/sh/mm/pg-sh7705.c | 102 |
9 files changed, 27 insertions, 182 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) diff --git a/arch/sh/kernel/sh_ksyms_32.c b/arch/sh/kernel/sh_ksyms_32.c index cec610888e28..8dbe26b17c44 100644 --- a/arch/sh/kernel/sh_ksyms_32.c +++ b/arch/sh/kernel/sh_ksyms_32.c @@ -101,11 +101,6 @@ EXPORT_SYMBOL(flush_cache_range); EXPORT_SYMBOL(flush_dcache_page); #endif -#if !defined(CONFIG_CACHE_OFF) && defined(CONFIG_MMU) && \ - (defined(CONFIG_CPU_SH4) || defined(CONFIG_SH7705_CACHE_32KB)) -EXPORT_SYMBOL(clear_user_page); -#endif - #ifdef CONFIG_MCOUNT DECLARE_EXPORT(mcount); #endif @@ -114,7 +109,6 @@ EXPORT_SYMBOL(csum_partial_copy_generic); #ifdef CONFIG_IPV6 EXPORT_SYMBOL(csum_ipv6_magic); #endif -EXPORT_SYMBOL(clear_page); EXPORT_SYMBOL(copy_page); EXPORT_SYMBOL(__clear_user); EXPORT_SYMBOL(_ebss); diff --git a/arch/sh/lib/clear_page.S b/arch/sh/lib/clear_page.S index 8342bfbde64c..bee9817e055d 100644 --- a/arch/sh/lib/clear_page.S +++ b/arch/sh/lib/clear_page.S @@ -8,52 +8,6 @@ #include <linux/linkage.h> #include <asm/page.h> -/* - * clear_page - * @to: P1 address - * - * void clear_page(void *to) - */ - -/* - * r0 --- scratch - * r4 --- to - * r5 --- to + PAGE_SIZE - */ -ENTRY(clear_page) - mov r4,r5 - mov.l .Llimit,r0 - add r0,r5 - mov #0,r0 - ! -1: -#if defined(CONFIG_CPU_SH4) - movca.l r0,@r4 - mov r4,r1 -#else - mov.l r0,@r4 -#endif - add #32,r4 - mov.l r0,@-r4 - mov.l r0,@-r4 - mov.l r0,@-r4 - mov.l r0,@-r4 - mov.l r0,@-r4 - mov.l r0,@-r4 - mov.l r0,@-r4 -#if defined(CONFIG_CPU_SH4) - ocbwb @r1 -#endif - cmp/eq r5,r4 - bf/s 1b - add #28,r4 - ! - rts - nop - - .balign 4 -.Llimit: .long (PAGE_SIZE-28) - ENTRY(__clear_user) ! mov #0, r0 diff --git a/arch/sh/mm/Makefile_32 b/arch/sh/mm/Makefile_32 index 986a1e055834..5c04bbb08d36 100644 --- a/arch/sh/mm/Makefile_32 +++ b/arch/sh/mm/Makefile_32 @@ -31,7 +31,7 @@ tlb-$(CONFIG_CPU_HAS_PTEAEX) := tlb-pteaex.o obj-y += $(tlb-y) ifndef CONFIG_CACHE_OFF obj-$(CONFIG_CPU_SH4) += pg-sh4.o -obj-$(CONFIG_SH7705_CACHE_32KB) += pg-sh7705.o +obj-$(CONFIG_SH7705_CACHE_32KB) += pg-sh4.o endif endif diff --git a/arch/sh/mm/pg-nommu.c b/arch/sh/mm/pg-nommu.c index 91ed4e695ff7..7e33b486b7e9 100644 --- a/arch/sh/mm/pg-nommu.c +++ b/arch/sh/mm/pg-nommu.c @@ -1,7 +1,7 @@ /* * arch/sh/mm/pg-nommu.c * - * clear_page()/copy_page() implementation for MMUless SH. + * copy_page()/__copy_user()/__clear_user() implementations for MMUless SH. * * Copyright (C) 2003 Paul Mundt * @@ -20,11 +20,6 @@ void copy_page(void *to, void *from) memcpy(to, from, PAGE_SIZE); } -void clear_page(void *to) -{ - memset(to, 0, PAGE_SIZE); -} - __kernel_size_t __copy_user(void *to, const void *from, __kernel_size_t n) { memcpy(to, from, n); diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-sh4.c index f3c4b2a54fc7..4d93070b8220 100644 --- a/arch/sh/mm/pg-sh4.c +++ b/arch/sh/mm/pg-sh4.c @@ -2,7 +2,7 @@ * arch/sh/mm/pg-sh4.c * * Copyright (C) 1999, 2000, 2002 Niibe Yutaka - * Copyright (C) 2002 - 2007 Paul Mundt + * Copyright (C) 2002 - 2009 Paul Mundt * * Released under the terms of the GNU GPL v2.0. */ @@ -58,20 +58,6 @@ static inline void kunmap_coherent(struct page *page) preempt_check_resched(); } -/* - * clear_user_page - * @to: P1 address - * @address: U0 address to be mapped - * @page: page (virt_to_page(to)) - */ -void clear_user_page(void *to, unsigned long address, struct page *page) -{ - clear_page(to); - - if (pages_do_alias((unsigned long)to, address & PAGE_MASK)) - __flush_wback_region(to, PAGE_SIZE); -} - void copy_to_user_page(struct vm_area_struct *vma, struct page *page, unsigned long vaddr, void *dst, const void *src, unsigned long len) @@ -128,3 +114,16 @@ void copy_user_highpage(struct page *to, struct page *from, smp_wmb(); } EXPORT_SYMBOL(copy_user_highpage); + +void clear_user_highpage(struct page *page, unsigned long vaddr) +{ + void *kaddr = kmap_atomic(page, KM_USER0); + + clear_page(kaddr); + + if (pages_do_alias((unsigned long)kaddr, vaddr & PAGE_MASK)) + __flush_wback_region(kaddr, PAGE_SIZE); + + kunmap_atomic(kaddr, KM_USER0); +} +EXPORT_SYMBOL(clear_user_highpage); diff --git a/arch/sh/mm/pg-sh7705.c b/arch/sh/mm/pg-sh7705.c deleted file mode 100644 index 684891b5c8c0..000000000000 --- a/arch/sh/mm/pg-sh7705.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * arch/sh/mm/pg-sh7705.c - * - * Copyright (C) 1999, 2000 Niibe Yutaka - * Copyright (C) 2004 Alex Song - * - * This file is subject to the terms and conditions of the GNU General Public - * License. See the file "COPYING" in the main directory of this archive - * for more details. - * - */ - -#include <linux/init.h> -#include <linux/mman.h> -#include <linux/mm.h> -#include <linux/threads.h> -#include <linux/fs.h> -#include <asm/addrspace.h> -#include <asm/page.h> -#include <asm/pgtable.h> -#include <asm/processor.h> -#include <asm/cache.h> -#include <asm/io.h> -#include <asm/uaccess.h> -#include <asm/pgalloc.h> -#include <asm/mmu_context.h> -#include <asm/cacheflush.h> - -static void __flush_purge_virtual_region(void *p1, void *virt, int size) -{ - unsigned long v; - unsigned long begin, end; - unsigned long p1_begin; - - - begin = L1_CACHE_ALIGN((unsigned long)virt); - end = L1_CACHE_ALIGN((unsigned long)virt + size); - - p1_begin = (unsigned long)p1 & ~(L1_CACHE_BYTES - 1); - - /* do this the slow way as we may not have TLB entries - * for virt yet. */ - for (v = begin; v < end; v += L1_CACHE_BYTES) { - unsigned long p; - unsigned long ways, addr; - - p = __pa(p1_begin); - - ways = current_cpu_data.dcache.ways; - addr = CACHE_OC_ADDRESS_ARRAY; - - do { - unsigned long data; - - addr |= (v & current_cpu_data.dcache.entry_mask); - - data = ctrl_inl(addr); - if ((data & CACHE_PHYSADDR_MASK) == - (p & CACHE_PHYSADDR_MASK)) { - data &= ~(SH_CACHE_UPDATED|SH_CACHE_VALID); - ctrl_outl(data, addr); - } - - addr += current_cpu_data.dcache.way_incr; - } while (--ways); - - p1_begin += L1_CACHE_BYTES; - } -} - -/* - * clear_user_page - * @to: P1 address - * @address: U0 address to be mapped - */ -void clear_user_page(void *to, unsigned long address, struct page *pg) -{ - if (pages_do_alias(address, (unsigned long)to)) - __flush_purge_virtual_region(to, - (void *)(address & 0xfffff000), - PAGE_SIZE); - - clear_page(to); - __flush_wback_region(to, PAGE_SIZE); -} - -/* - * copy_user_page - * @to: P1 address - * @from: P1 address - * @address: U0 address to be mapped - */ -void copy_user_page(void *to, void *from, unsigned long address, struct page *pg) -{ - if (pages_do_alias(address, (unsigned long)to)) - __flush_purge_virtual_region(to, - (void *)(address & 0xfffff000), - PAGE_SIZE); - - copy_page(to, from); - __flush_wback_region(to, PAGE_SIZE); -} |