diff options
Diffstat (limited to 'arch/sh/mm')
| -rw-r--r-- | arch/sh/mm/Kconfig | 21 | ||||
| -rw-r--r-- | arch/sh/mm/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/mm/clear_page.S | 45 | ||||
| -rw-r--r-- | arch/sh/mm/copy_page.S | 61 | ||||
| -rw-r--r-- | arch/sh/mm/pg-sh4.c | 75 |
5 files changed, 55 insertions, 149 deletions
diff --git a/arch/sh/mm/Kconfig b/arch/sh/mm/Kconfig index cf446bbab5b0..1265f204f7d1 100644 --- a/arch/sh/mm/Kconfig +++ b/arch/sh/mm/Kconfig @@ -17,7 +17,7 @@ config CPU_SH4 bool select CPU_HAS_INTEVT select CPU_HAS_SR_RB - select CPU_HAS_PTEA if (!CPU_SUBTYPE_ST40 && !CPU_SH4A) || CPU_SHX2 + select CPU_HAS_PTEA if !CPU_SH4A || CPU_SHX2 select CPU_HAS_FPU if !CPU_SH4AL_DSP config CPU_SH4A @@ -29,10 +29,6 @@ config CPU_SH4AL_DSP select CPU_SH4A select CPU_HAS_DSP -config CPU_SUBTYPE_ST40 - bool - select CPU_SH4 - config CPU_SHX2 bool @@ -152,21 +148,6 @@ config CPU_SUBTYPE_SH4_202 bool "Support SH4-202 processor" select CPU_SH4 -# ST40 Processor Support - -config CPU_SUBTYPE_ST40STB1 - bool "Support ST40STB1/ST40RA processors" - select CPU_SUBTYPE_ST40 - help - Select ST40STB1 if you have a ST40RA CPU. - This was previously called the ST40STB1, hence the option name. - -config CPU_SUBTYPE_ST40GX1 - bool "Support ST40GX1 processor" - select CPU_SUBTYPE_ST40 - help - Select ST40GX1 if you have a ST40GX1 CPU. - # SH-4A Processor Support config CPU_SUBTYPE_SH7770 diff --git a/arch/sh/mm/Makefile b/arch/sh/mm/Makefile index ee30fb44dfe1..aa44607f072d 100644 --- a/arch/sh/mm/Makefile +++ b/arch/sh/mm/Makefile @@ -33,3 +33,5 @@ endif obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o obj-$(CONFIG_32BIT) += pmb.o obj-$(CONFIG_NUMA) += numa.o + +EXTRA_CFLAGS += -Werror diff --git a/arch/sh/mm/clear_page.S b/arch/sh/mm/clear_page.S index 8a706131e521..7a7c81ee3f01 100644 --- a/arch/sh/mm/clear_page.S +++ b/arch/sh/mm/clear_page.S @@ -150,48 +150,3 @@ ENTRY(__clear_user) .long 8b, .Lbad_clear_user .long 9b, .Lbad_clear_user .previous - -#if defined(CONFIG_CPU_SH4) -/* - * __clear_user_page - * @to: P3 address (with same color) - * @orig_to: P1 address - * - * void __clear_user_page(void *to, void *orig_to) - */ - -/* - * r0 --- scratch - * r4 --- to - * r5 --- orig_to - * r6 --- to + PAGE_SIZE - */ -ENTRY(__clear_user_page) - mov.l .Lpsz,r0 - mov r4,r6 - add r0,r6 - mov #0,r0 - ! -1: ocbi @r5 - add #32,r5 - movca.l r0,@r4 - mov r4,r1 - 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 - add #28,r4 - cmp/eq r6,r4 - bf/s 1b - ocbwb @r1 - ! - rts - nop -.Lpsz: .long PAGE_SIZE - -#endif - diff --git a/arch/sh/mm/copy_page.S b/arch/sh/mm/copy_page.S index 3d8409daa4be..40685018b952 100644 --- a/arch/sh/mm/copy_page.S +++ b/arch/sh/mm/copy_page.S @@ -68,67 +68,6 @@ ENTRY(copy_page_slow) rts nop -#if defined(CONFIG_CPU_SH4) -/* - * __copy_user_page - * @to: P1 address (with same color) - * @from: P1 address - * @orig_to: P1 address - * - * void __copy_user_page(void *to, void *from, void *orig_to) - */ - -/* - * r0, r1, r2, r3, r4, r5, r6, r7 --- scratch - * r8 --- from + PAGE_SIZE - * r9 --- orig_to - * r10 --- to - * r11 --- from - */ -ENTRY(__copy_user_page) - mov.l r8,@-r15 - mov.l r9,@-r15 - mov.l r10,@-r15 - mov.l r11,@-r15 - mov r4,r10 - mov r5,r11 - mov r6,r9 - mov r5,r8 - mov.l .Lpsz,r0 - add r0,r8 - ! -1: ocbi @r9 - add #32,r9 - mov.l @r11+,r0 - mov.l @r11+,r1 - mov.l @r11+,r2 - mov.l @r11+,r3 - mov.l @r11+,r4 - mov.l @r11+,r5 - mov.l @r11+,r6 - mov.l @r11+,r7 - movca.l r0,@r10 - mov r10,r0 - add #32,r10 - mov.l r7,@-r10 - mov.l r6,@-r10 - mov.l r5,@-r10 - mov.l r4,@-r10 - mov.l r3,@-r10 - mov.l r2,@-r10 - mov.l r1,@-r10 - ocbwb @r0 - cmp/eq r11,r8 - bf/s 1b - add #28,r10 - ! - mov.l @r15+,r11 - mov.l @r15+,r10 - mov.l @r15+,r9 - mov.l @r15+,r8 - rts - nop -#endif .align 2 .Lpsz: .long PAGE_SIZE /* diff --git a/arch/sh/mm/pg-sh4.c b/arch/sh/mm/pg-sh4.c index 25f5c6f6821d..8c7a9ca79879 100644 --- a/arch/sh/mm/pg-sh4.c +++ b/arch/sh/mm/pg-sh4.c @@ -9,6 +9,8 @@ #include <linux/mm.h> #include <linux/mutex.h> #include <linux/fs.h> +#include <linux/highmem.h> +#include <linux/module.h> #include <asm/mmu_context.h> #include <asm/cacheflush.h> @@ -50,34 +52,61 @@ static inline void kunmap_coherent(struct page *page) void clear_user_page(void *to, unsigned long address, struct page *page) { __set_bit(PG_mapped, &page->flags); - if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) - clear_page(to); - else { - void *vto = kmap_coherent(page, address); - __clear_user_page(vto, to); - kunmap_coherent(vto); - } + + clear_page(to); + if ((((address & PAGE_MASK) ^ (unsigned long)to) & CACHE_ALIAS)) + __flush_wback_region(to, PAGE_SIZE); } -/* - * copy_user_page - * @to: P1 address - * @from: P1 address - * @address: U0 address to be mapped - * @page: page (virt_to_page(to)) - */ -void copy_user_page(void *to, void *from, unsigned long address, - struct page *page) +void copy_to_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long vaddr, void *dst, const void *src, + unsigned long len) { + void *vto; + __set_bit(PG_mapped, &page->flags); - if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) - copy_page(to, from); - else { - void *vfrom = kmap_coherent(page, address); - __copy_user_page(vfrom, from, to); - kunmap_coherent(vfrom); - } + + vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); + memcpy(vto, src, len); + kunmap_coherent(vto); + + if (vma->vm_flags & VM_EXEC) + flush_cache_page(vma, vaddr, page_to_pfn(page)); +} + +void copy_from_user_page(struct vm_area_struct *vma, struct page *page, + unsigned long vaddr, void *dst, const void *src, + unsigned long len) +{ + void *vfrom; + + __set_bit(PG_mapped, &page->flags); + + vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK); + memcpy(dst, vfrom, len); + kunmap_coherent(vfrom); +} + +void copy_user_highpage(struct page *to, struct page *from, + unsigned long vaddr, struct vm_area_struct *vma) +{ + void *vfrom, *vto; + + __set_bit(PG_mapped, &to->flags); + + vto = kmap_atomic(to, KM_USER1); + vfrom = kmap_coherent(from, vaddr); + copy_page(vto, vfrom); + kunmap_coherent(vfrom); + + if (((vaddr ^ (unsigned long)vto) & CACHE_ALIAS)) + __flush_wback_region(vto, PAGE_SIZE); + + kunmap_atomic(vto, KM_USER1); + /* Make sure this page is cleared on other CPU's too before using it */ + smp_wmb(); } +EXPORT_SYMBOL(copy_user_highpage); /* * For SH-4, we have our own implementation for ptep_get_and_clear |