diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/sh/include/asm/cacheflush.h | 41 | ||||
| -rw-r--r-- | arch/sh/mm/cache-sh2a.c | 10 | ||||
| -rw-r--r-- | arch/sh/mm/cache-sh4.c | 54 | ||||
| -rw-r--r-- | arch/sh/mm/cache-sh5.c | 64 | ||||
| -rw-r--r-- | arch/sh/mm/cache-sh7705.c | 67 | ||||
| -rw-r--r-- | arch/sh/mm/cache.c | 137 |
6 files changed, 213 insertions, 160 deletions
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h index 32299b7c2b48..11e416630585 100644 --- a/arch/sh/include/asm/cacheflush.h +++ b/arch/sh/include/asm/cacheflush.h @@ -19,23 +19,40 @@ * - flush_icache_page(vma, pg) flushes(invalidates) a page for icache * - flush_cache_sigtramp(vaddr) flushes the signal trampoline */ -extern void (*flush_cache_all)(void); -extern void (*flush_cache_mm)(struct mm_struct *mm); -extern void (*flush_cache_dup_mm)(struct mm_struct *mm); -extern void (*flush_cache_page)(struct vm_area_struct *vma, - unsigned long addr, unsigned long pfn); -extern void (*flush_cache_range)(struct vm_area_struct *vma, - unsigned long start, unsigned long end); -extern void (*flush_dcache_page)(struct page *page); -extern void (*flush_icache_range)(unsigned long start, unsigned long end); -extern void (*flush_icache_page)(struct vm_area_struct *vma, - struct page *page); -extern void (*flush_cache_sigtramp)(unsigned long address); +extern void (*local_flush_cache_all)(void *args); +extern void (*local_flush_cache_mm)(void *args); +extern void (*local_flush_cache_dup_mm)(void *args); +extern void (*local_flush_cache_page)(void *args); +extern void (*local_flush_cache_range)(void *args); +extern void (*local_flush_dcache_page)(void *args); +extern void (*local_flush_icache_range)(void *args); +extern void (*local_flush_icache_page)(void *args); +extern void (*local_flush_cache_sigtramp)(void *args); + +static inline void cache_noop(void *args) { } extern void (*__flush_wback_region)(void *start, int size); extern void (*__flush_purge_region)(void *start, int size); extern void (*__flush_invalidate_region)(void *start, int size); +extern void flush_cache_all(void); +extern void flush_cache_mm(struct mm_struct *mm); +extern void flush_cache_dup_mm(struct mm_struct *mm); +extern void flush_cache_page(struct vm_area_struct *vma, + unsigned long addr, unsigned long pfn); +extern void flush_cache_range(struct vm_area_struct *vma, + unsigned long start, unsigned long end); +extern void flush_dcache_page(struct page *page); +extern void flush_icache_range(unsigned long start, unsigned long end); +extern void flush_icache_page(struct vm_area_struct *vma, + struct page *page); +extern void flush_cache_sigtramp(unsigned long address); + +struct flusher_data { + struct vm_area_struct *vma; + unsigned long addr1, addr2; +}; + #define ARCH_HAS_FLUSH_ANON_PAGE extern void __flush_anon_page(struct page *page, unsigned long); diff --git a/arch/sh/mm/cache-sh2a.c b/arch/sh/mm/cache-sh2a.c index 96a41872dfd3..975899d83564 100644 --- a/arch/sh/mm/cache-sh2a.c +++ b/arch/sh/mm/cache-sh2a.c @@ -97,13 +97,15 @@ static void sh2a__flush_invalidate_region(void *start, int size) } /* WBack O-Cache and flush I-Cache */ -static void sh2a_flush_icache_range(unsigned long start, unsigned long end) +static void sh2a_flush_icache_range(void *args) { + struct flusher_data *data = args; + unsigned long start, end; unsigned long v; unsigned long flags; - start = start & ~(L1_CACHE_BYTES-1); - end = (end + L1_CACHE_BYTES-1) & ~(L1_CACHE_BYTES-1); + start = data->addr1 & ~(L1_CACHE_BYTES-1); + end = (data->addr2 + L1_CACHE_BYTES-1) & ~(L1_CACHE_BYTES-1); local_irq_save(flags); jump_to_uncached(); @@ -130,7 +132,7 @@ static void sh2a_flush_icache_range(unsigned long start, unsigned long end) void __init sh2a_cache_init(void) { - flush_icache_range = sh2a_flush_icache_range; + local_flush_icache_range = sh2a_flush_icache_range; __flush_wback_region = sh2a__flush_wback_region; __flush_purge_region = sh2a__flush_purge_region; diff --git a/arch/sh/mm/cache-sh4.c b/arch/sh/mm/cache-sh4.c index 6c2db1401080..9201b37c7cca 100644 --- a/arch/sh/mm/cache-sh4.c +++ b/arch/sh/mm/cache-sh4.c @@ -43,15 +43,20 @@ static void (*__flush_dcache_segment_fn)(unsigned long, unsigned long) = * Called from kernel/module.c:sys_init_module and routine for a.out format, * signal handler code and kprobes code */ -static void sh4_flush_icache_range(unsigned long start, unsigned long end) +static void sh4_flush_icache_range(void *args) { + struct flusher_data *data = args; int icacheaddr; + unsigned long start, end; unsigned long flags, v; int i; + start = data->addr1; + end = data->addr2; + /* If there are too many pages then just blow the caches */ if (((end - start) >> PAGE_SHIFT) >= MAX_ICACHE_PAGES) { - flush_cache_all(); + local_flush_cache_all(args); } else { /* selectively flush d-cache then invalidate the i-cache */ /* this is inefficient, so only use for small ranges */ @@ -104,7 +109,7 @@ static inline void flush_cache_4096(unsigned long start, * Write back & invalidate the D-cache of the page. * (To avoid "alias" issues) */ -static void sh4_flush_dcache_page(struct page *page) +static void sh4_flush_dcache_page(void *page) { #ifndef CONFIG_SMP struct address_space *mapping = page_mapping(page); @@ -155,7 +160,7 @@ static inline void flush_dcache_all(void) wmb(); } -static void sh4_flush_cache_all(void) +static void sh4_flush_cache_all(void *unused) { flush_dcache_all(); flush_icache_all(); @@ -247,8 +252,10 @@ loop_exit: * * Caller takes mm->mmap_sem. */ -static void sh4_flush_cache_mm(struct mm_struct *mm) +static void sh4_flush_cache_mm(void *arg) { + struct mm_struct *mm = arg; + if (cpu_context(smp_processor_id(), mm) == NO_CONTEXT) return; @@ -287,12 +294,18 @@ static void sh4_flush_cache_mm(struct mm_struct *mm) * ADDR: Virtual Address (U0 address) * PFN: Physical page number */ -static void sh4_flush_cache_page(struct vm_area_struct *vma, - unsigned long address, unsigned long pfn) +static void sh4_flush_cache_page(void *args) { - unsigned long phys = pfn << PAGE_SHIFT; + struct flusher_data *data = args; + struct vm_area_struct *vma; + unsigned long address, pfn, phys; unsigned int alias_mask; + vma = data->vma; + address = data->addr1; + pfn = data->addr2; + phys = pfn << PAGE_SHIFT; + if (cpu_context(smp_processor_id(), vma->vm_mm) == NO_CONTEXT) return; @@ -335,9 +348,16 @@ static void sh4_flush_cache_page(struct vm_area_struct *vma, * Flushing the cache lines for U0 only isn't enough. * We need to flush for P1 too, which may contain aliases. */ -static void sh4_flush_cache_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) +static void sh4_flush_cache_range(void *args) { + struct flusher_data *data = args; + struct vm_area_struct *vma; + unsigned long start, end; + + vma = data->vma; + start = data->addr1; + end = data->addr2; + if (cpu_context(smp_processor_id(), vma->vm_mm) == NO_CONTEXT) return; @@ -663,13 +683,13 @@ void __init sh4_cache_init(void) break; } - flush_icache_range = sh4_flush_icache_range; - flush_dcache_page = sh4_flush_dcache_page; - flush_cache_all = sh4_flush_cache_all; - flush_cache_mm = sh4_flush_cache_mm; - flush_cache_dup_mm = sh4_flush_cache_mm; - flush_cache_page = sh4_flush_cache_page; - flush_cache_range = sh4_flush_cache_range; + local_flush_icache_range = sh4_flush_icache_range; + local_flush_dcache_page = sh4_flush_dcache_page; + local_flush_cache_all = sh4_flush_cache_all; + local_flush_cache_mm = sh4_flush_cache_mm; + local_flush_cache_dup_mm = sh4_flush_cache_mm; + local_flush_cache_page = sh4_flush_cache_page; + local_flush_cache_range = sh4_flush_cache_range; sh4__flush_region_init(); } diff --git a/arch/sh/mm/cache-sh5.c b/arch/sh/mm/cache-sh5.c index d4a445c865d7..467ff8e260f7 100644 --- a/arch/sh/mm/cache-sh5.c +++ b/arch/sh/mm/cache-sh5.c @@ -483,7 +483,7 @@ static void sh64_dcache_purge_user_range(struct mm_struct *mm, * Invalidate the entire contents of both caches, after writing back to * memory any dirty data from the D-cache. */ -static void sh5_flush_cache_all(void) +static void sh5_flush_cache_all(void *unused) { sh64_dcache_purge_all(); sh64_icache_inv_all(); @@ -510,7 +510,7 @@ static void sh5_flush_cache_all(void) * I-cache. This is similar to the lack of action needed in * flush_tlb_mm - see fault.c. */ -static void sh5_flush_cache_mm(struct mm_struct *mm) +static void sh5_flush_cache_mm(void *unused) { sh64_dcache_purge_all(); } @@ -522,13 +522,18 @@ static void sh5_flush_cache_mm(struct mm_struct *mm) * * Note, 'end' is 1 byte beyond the end of the range to flush. */ -static void sh5_flush_cache_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) +static void sh5_flush_cache_range(void *args) { - struct mm_struct *mm = vma->vm_mm; + struct flusher_data *data = args; + struct vm_area_struct *vma; + unsigned long start, end; - sh64_dcache_purge_user_range(mm, start, end); - sh64_icache_inv_user_page_range(mm, start, end); + vma = data->vma; + start = data->addr1; + end = data->addr2; + + sh64_dcache_purge_user_range(vma->vm_mm, start, end); + sh64_icache_inv_user_page_range(vma->vm_mm, start, end); } /* @@ -540,16 +545,23 @@ static void sh5_flush_cache_range(struct vm_area_struct *vma, * * Note, this is called with pte lock held. */ -static void sh5_flush_cache_page(struct vm_area_struct *vma, - unsigned long eaddr, unsigned long pfn) +static void sh5_flush_cache_page(void *args) { + struct flusher_data *data = args; + struct vm_area_struct *vma; + unsigned long eaddr, pfn; + + vma = data->vma; + eaddr = data->addr1; + pfn = data->addr2; + sh64_dcache_purge_phy_page(pfn << PAGE_SHIFT); if (vma->vm_flags & VM_EXEC) sh64_icache_inv_user_page(vma, eaddr); } -static void sh5_flush_dcache_page(struct page *page) +static void sh5_flush_dcache_page(void *page) { sh64_dcache_purge_phy_page(page_to_phys(page)); wmb(); @@ -563,8 +575,14 @@ static void sh5_flush_dcache_page(struct page *page) * mapping, therefore it's guaranteed that there no cache entries for * the range in cache sets of the wrong colour. */ -static void sh5_flush_icache_range(unsigned long start, unsigned long end) +static void sh5_flush_icache_range(void *args) { + struct flusher_data *data = args; + unsigned long start, end; + + start = data->addr1; + end = data->addr2; + __flush_purge_region((void *)start, end); wmb(); sh64_icache_inv_kernel_range(start, end); @@ -576,25 +594,25 @@ static void sh5_flush_icache_range(unsigned long start, unsigned long end) * current process. Used to flush signal trampolines on the stack to * make them executable. */ -static void sh5_flush_cache_sigtramp(unsigned long vaddr) +static void sh5_flush_cache_sigtramp(void *vaddr) { - unsigned long end = vaddr + L1_CACHE_BYTES; + unsigned long end = (unsigned long)vaddr + L1_CACHE_BYTES; - __flush_wback_region((void *)vaddr, L1_CACHE_BYTES); + __flush_wback_region(vaddr, L1_CACHE_BYTES); wmb(); - sh64_icache_inv_current_user_range(vaddr, end); + sh64_icache_inv_current_user_range((unsigned long)vaddr, end); } void __init sh5_cache_init(void) { - flush_cache_all = sh5_flush_cache_all; - flush_cache_mm = sh5_flush_cache_mm; - flush_cache_dup_mm = sh5_flush_cache_mm; - flush_cache_page = sh5_flush_cache_page; - flush_cache_range = sh5_flush_cache_range; - flush_dcache_page = sh5_flush_dcache_page; - flush_icache_range = sh5_flush_icache_range; - flush_cache_sigtramp = sh5_flush_cache_sigtramp; + local_flush_cache_all = sh5_flush_cache_all; + local_flush_cache_mm = sh5_flush_cache_mm; + local_flush_cache_dup_mm = sh5_flush_cache_mm; + local_flush_cache_page = sh5_flush_cache_page; + local_flush_cache_range = sh5_flush_cache_range; + local_flush_dcache_page = sh5_flush_dcache_page; + local_flush_icache_range = sh5_flush_icache_range; + local_flush_cache_sigtramp = sh5_flush_cache_sigtramp; /* Reserve a slot for dcache colouring in the DTLB */ dtlb_cache_slot = sh64_get_wired_dtlb_entry(); diff --git a/arch/sh/mm/cache-sh7705.c b/arch/sh/mm/cache-sh7705.c index f1d5c803c04b..6293f57fa888 100644 --- a/arch/sh/mm/cache-sh7705.c +++ b/arch/sh/mm/cache-sh7705.c @@ -64,8 +64,14 @@ static inline void cache_wback_all(void) * * Called from kernel/module.c:sys_init_module and routine for a.out format. */ -static void sh7705_flush_icache_range(unsigned long start, unsigned long end) +static void sh7705_flush_icache_range(void *args) { + struct flusher_data *data = args; + unsigned long start, end; + + start = data->addr1; + end = data->addr2; + __flush_wback_region((void *)start, end - start); } @@ -127,7 +133,7 @@ static void __flush_dcache_page(unsigned long phys) * Write back & invalidate the D-cache of the page. * (To avoid "alias" issues) */ -static void sh7705_flush_dcache_page(struct page *page) +static void sh7705_flush_dcache_page(void *page) { struct address_space *mapping = page_mapping(page); @@ -137,7 +143,7 @@ static void sh7705_flush_dcache_page(struct page *page) __flush_dcache_page(PHYSADDR(page_address(page))); } -static void sh7705_flush_cache_all(void) +static void sh7705_flush_cache_all(void *args) { unsigned long flags; @@ -149,44 +155,16 @@ static void sh7705_flush_cache_all(void) local_irq_restore(flags); } -static void sh7705_flush_cache_mm(struct mm_struct *mm) -{ - /* Is there any good way? */ - /* XXX: possibly call flush_cache_range for each vm area */ - flush_cache_all(); -} - -/* - * Write back and invalidate D-caches. - * - * START, END: Virtual Address (U0 address) - * - * NOTE: We need to flush the _physical_ page entry. - * Flushing the cache lines for U0 only isn't enough. - * We need to flush for P1 too, which may contain aliases. - */ -static void sh7705_flush_cache_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ - - /* - * We could call flush_cache_page for the pages of these range, - * but it's not efficient (scan the caches all the time...). - * - * We can't use A-bit magic, as there's the case we don't have - * valid entry on TLB. - */ - flush_cache_all(); -} - /* * Write back and invalidate I/D-caches for the page. * * ADDRESS: Virtual Address (U0 address) */ -static void sh7705_flush_cache_page(struct vm_area_struct *vma, - unsigned long address, unsigned long pfn) +static void sh7705_flush_cache_page(void *args) { + struct flusher_data *data = args; + unsigned long pfn = data->addr2; + __flush_dcache_page(pfn << PAGE_SHIFT); } @@ -198,20 +176,19 @@ static void sh7705_flush_cache_page(struct vm_area_struct *vma, * Not entirely sure why this is necessary on SH3 with 32K cache but * without it we get occasional "Memory fault" when loading a program. */ -static void sh7705_flush_icache_page(struct vm_area_struct *vma, - struct page *page) +static void sh7705_flush_icache_page(void *page) { __flush_purge_region(page_address(page), PAGE_SIZE); } void __init sh7705_cache_init(void) { - flush_icache_range = sh7705_flush_icache_range; - flush_dcache_page = sh7705_flush_dcache_page; - flush_cache_all = sh7705_flush_cache_all; - flush_cache_mm = sh7705_flush_cache_mm; - flush_cache_dup_mm = sh7705_flush_cache_mm; - flush_cache_range = sh7705_flush_cache_range; - flush_cache_page = sh7705_flush_cache_page; - flush_icache_page = sh7705_flush_icache_page; + local_flush_icache_range = sh7705_flush_icache_range; + local_flush_dcache_page = sh7705_flush_dcache_page; + local_flush_cache_all = sh7705_flush_cache_all; + local_flush_cache_mm = sh7705_flush_cache_all; + local_flush_cache_dup_mm = sh7705_flush_cache_all; + local_flush_cache_range = sh7705_flush_cache_all; + local_flush_cache_page = sh7705_flush_cache_page; + local_flush_icache_page = sh7705_flush_icache_page; } diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c index d60239460436..411fe6058429 100644 --- a/arch/sh/mm/cache.c +++ b/arch/sh/mm/cache.c @@ -1,5 +1,5 @@ /* - * arch/sh/mm/pg-mmu.c + * arch/sh/mm/cache.c * * Copyright (C) 1999, 2000, 2002 Niibe Yutaka * Copyright (C) 2002 - 2009 Paul Mundt @@ -10,63 +10,26 @@ #include <linux/init.h> #include <linux/mutex.h> #include <linux/fs.h> +#include <linux/smp.h> #include <linux/highmem.h> #include <linux/module.h> #include <asm/mmu_context.h> #include <asm/cacheflush.h> -void (*flush_cache_all)(void); -void (*flush_cache_mm)(struct mm_struct *mm); -void (*flush_cache_dup_mm)(struct mm_struct *mm); -void (*flush_cache_page)(struct vm_area_struct *vma, - unsigned long addr, unsigned long pfn); -void (*flush_cache_range)(struct vm_area_struct *vma, - unsigned long start, unsigned long end); -void (*flush_dcache_page)(struct page *page); -void (*flush_icache_range)(unsigned long start, unsigned long end); -void (*flush_icache_page)(struct vm_area_struct *vma, - struct page *page); -void (*flush_cache_sigtramp)(unsigned long address); +void (*local_flush_cache_all)(void *args) = cache_noop; +void (*local_flush_cache_mm)(void *args) = cache_noop; +void (*local_flush_cache_dup_mm)(void *args) = cache_noop; +void (*local_flush_cache_page)(void *args) = cache_noop; +void (*local_flush_cache_range)(void *args) = cache_noop; +void (*local_flush_dcache_page)(void *args) = cache_noop; +void (*local_flush_icache_range)(void *args) = cache_noop; +void (*local_flush_icache_page)(void *args) = cache_noop; +void (*local_flush_cache_sigtramp)(void *args) = cache_noop; + void (*__flush_wback_region)(void *start, int size); void (*__flush_purge_region)(void *start, int size); void (*__flush_invalidate_region)(void *start, int size); -static inline void noop_flush_cache_all(void) -{ -} - -static inline void noop_flush_cache_mm(struct mm_struct *mm) -{ -} - -static inline void noop_flush_cache_page(struct vm_area_struct *vma, - unsigned long addr, unsigned long pfn) -{ -} - -static inline void noop_flush_cache_range(struct vm_area_struct *vma, - unsigned long start, unsigned long end) -{ -} - -static inline void noop_flush_dcache_page(struct page *page) -{ -} - -static inline void noop_flush_icache_range(unsigned long start, - unsigned long end) -{ -} - -static inline void noop_flush_icache_page(struct vm_area_struct *vma, - struct page *page) -{ -} - -static inline void noop_flush_cache_sigtramp(unsigned long address) -{ -} - static inline void noop__flush_region(void *start, int size) { } @@ -184,6 +147,72 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr) } } +void flush_cache_all(void) +{ + on_each_cpu(local_flush_cache_all, NULL, 1); +} + +void flush_cache_mm(struct mm_struct *mm) +{ + on_each_cpu(local_flush_cache_mm, mm, 1); +} + +void flush_cache_dup_mm(struct mm_struct *mm) +{ + on_each_cpu(local_flush_cache_dup_mm, mm, 1); +} + +void flush_cache_page(struct vm_area_struct *vma, unsigned long addr, + unsigned long pfn) +{ + struct flusher_data data; + + data.vma = vma; + data.addr1 = addr; + data.addr2 = pfn; + + on_each_cpu(local_flush_cache_page, (void *)&data, 1); +} + +void flush_cache_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end) +{ + struct flusher_data data; + + data.vma = vma; + data.addr1 = start; + data.addr2 = end; + + on_each_cpu(local_flush_cache_range, (void *)&data, 1); +} + +void flush_dcache_page(struct page *page) +{ + on_each_cpu(local_flush_dcache_page, page, 1); +} + +void flush_icache_range(unsigned long start, unsigned long end) +{ + struct flusher_data data; + + data.vma = NULL; + data.addr1 = start; + data.addr2 = end; + + on_each_cpu(local_flush_icache_range, (void *)&data, 1); +} + +void flush_icache_page(struct vm_area_struct *vma, struct page *page) +{ + /* Nothing uses the VMA, so just pass the struct page along */ + on_each_cpu(local_flush_icache_page, page, 1); +} + +void flush_cache_sigtramp(unsigned long address) +{ + on_each_cpu(local_flush_cache_sigtramp, (void *)address, 1); +} + static void compute_alias(struct cache_info *c) { c->alias_mask = ((c->sets - 1) << c->entry_shift) & ~(PAGE_SIZE - 1); @@ -230,16 +259,6 @@ void __init cpu_cache_init(void) compute_alias(&boot_cpu_data.dcache); compute_alias(&boot_cpu_data.scache); - flush_cache_all = noop_flush_cache_all; - flush_cache_mm = noop_flush_cache_mm; - flush_cache_dup_mm = noop_flush_cache_mm; - flush_cache_page = noop_flush_cache_page; - flush_cache_range = noop_flush_cache_range; - flush_dcache_page = noop_flush_dcache_page; - flush_icache_range = noop_flush_icache_range; - flush_icache_page = noop_flush_icache_page; - flush_cache_sigtramp = noop_flush_cache_sigtramp; - __flush_wback_region = noop__flush_region; __flush_purge_region = noop__flush_region; __flush_invalidate_region = noop__flush_region; |