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-rw-r--r--arch/sh/include/asm/pgtable.h15
-rw-r--r--arch/sh/mm/pg-mmu.c21
-rw-r--r--arch/sh/mm/tlb-nommu.c9
-rw-r--r--arch/sh/mm/tlb-pteaex.c13
-rw-r--r--arch/sh/mm/tlb-sh3.c29
-rw-r--r--arch/sh/mm/tlb-sh4.c29
-rw-r--r--arch/sh/mm/tlbflush_64.c25
7 files changed, 67 insertions, 74 deletions
diff --git a/arch/sh/include/asm/pgtable.h b/arch/sh/include/asm/pgtable.h
index ba2333216c5b..43ef3e99fdd1 100644
--- a/arch/sh/include/asm/pgtable.h
+++ b/arch/sh/include/asm/pgtable.h
@@ -134,8 +134,19 @@ typedef pte_t *pte_addr_t;
#define pgtable_cache_init() do { } while (0)
struct vm_area_struct;
-extern void update_mmu_cache(struct vm_area_struct * vma,
- unsigned long address, pte_t pte);
+
+extern void __update_cache(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte);
+extern void __update_tlb(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte);
+
+static inline void
+update_mmu_cache(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+ __update_cache(vma, address, pte);
+ __update_tlb(vma, address, pte);
+}
+
extern pgd_t swapper_pg_dir[PTRS_PER_PGD];
extern void paging_init(void);
extern void page_table_range_init(unsigned long start, unsigned long end,
diff --git a/arch/sh/mm/pg-mmu.c b/arch/sh/mm/pg-mmu.c
index 356d2cdcb209..8602f68af4c8 100644
--- a/arch/sh/mm/pg-mmu.c
+++ b/arch/sh/mm/pg-mmu.c
@@ -134,3 +134,24 @@ void clear_user_highpage(struct page *page, unsigned long vaddr)
kunmap_atomic(kaddr, KM_USER0);
}
EXPORT_SYMBOL(clear_user_highpage);
+
+void __update_cache(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte)
+{
+ struct page *page;
+ unsigned long pfn = pte_pfn(pte);
+
+ if (!boot_cpu_data.dcache.n_aliases)
+ return;
+
+ page = pfn_to_page(pfn);
+ if (pfn_valid(pfn) && page_mapping(page)) {
+ int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags);
+ if (dirty) {
+ unsigned long addr = (unsigned long)page_address(page);
+
+ if (pages_do_alias(addr, address & PAGE_MASK))
+ __flush_wback_region((void *)addr, PAGE_SIZE);
+ }
+ }
+}
diff --git a/arch/sh/mm/tlb-nommu.c b/arch/sh/mm/tlb-nommu.c
index 71c742b5aee3..0ef5429943df 100644
--- a/arch/sh/mm/tlb-nommu.c
+++ b/arch/sh/mm/tlb-nommu.c
@@ -46,10 +46,13 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
BUG();
}
-void update_mmu_cache(struct vm_area_struct * vma,
- unsigned long address, pte_t pte)
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+}
+
+void __update_cache(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte)
{
- BUG();
}
void __init page_table_range_init(unsigned long start, unsigned long end,
diff --git a/arch/sh/mm/tlb-pteaex.c b/arch/sh/mm/tlb-pteaex.c
index c39b77363352..9aabd313cede 100644
--- a/arch/sh/mm/tlb-pteaex.c
+++ b/arch/sh/mm/tlb-pteaex.c
@@ -16,15 +16,14 @@
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
-void update_mmu_cache(struct vm_area_struct * vma,
- unsigned long address, pte_t pte)
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
{
- unsigned long flags;
- unsigned long pteval;
- unsigned long vpn;
+ unsigned long flags, pteval, vpn;
- /* Ptrace may call this routine. */
- if (vma && current->active_mm != vma->vm_mm)
+ /*
+ * Handle debugger faulting in for debugee.
+ */
+ if (current->active_mm != vma->vm_mm)
return;
local_irq_save(flags);
diff --git a/arch/sh/mm/tlb-sh3.c b/arch/sh/mm/tlb-sh3.c
index 9b8459c74abd..425f1f23cf93 100644
--- a/arch/sh/mm/tlb-sh3.c
+++ b/arch/sh/mm/tlb-sh3.c
@@ -27,32 +27,16 @@
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
-void update_mmu_cache(struct vm_area_struct * vma,
- unsigned long address, pte_t pte)
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
{
- unsigned long flags;
- unsigned long pteval;
- unsigned long vpn;
- unsigned long pfn = pte_pfn(pte);
- struct page *page;
+ unsigned long flags, pteval, vpn;
- /* Ptrace may call this routine. */
- if (vma && current->active_mm != vma->vm_mm)
+ /*
+ * Handle debugger faulting in for debugee.
+ */
+ if (current->active_mm != vma->vm_mm)
return;
- page = pfn_to_page(pfn);
- if (pfn_valid(pfn) && page_mapping(page)) {
-#if defined(CONFIG_SH7705_CACHE_32KB)
- int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags);
- if (dirty) {
- unsigned long addr = (unsigned long)page_address(page);
-
- if (pages_do_alias(addr, address & PAGE_MASK))
- __flush_wback_region((void *)addr, PAGE_SIZE);
- }
-#endif
- }
-
local_irq_save(flags);
/* Set PTEH register */
@@ -93,4 +77,3 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
for (i = 0; i < ways; i++)
ctrl_outl(data, addr + (i << 8));
}
-
diff --git a/arch/sh/mm/tlb-sh4.c b/arch/sh/mm/tlb-sh4.c
index cf50082d2435..81199f1e5945 100644
--- a/arch/sh/mm/tlb-sh4.c
+++ b/arch/sh/mm/tlb-sh4.c
@@ -15,33 +15,16 @@
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
-void update_mmu_cache(struct vm_area_struct * vma,
- unsigned long address, pte_t pte)
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
{
- unsigned long flags;
- unsigned long pteval;
- unsigned long vpn;
- unsigned long pfn = pte_pfn(pte);
- struct page *page;
+ unsigned long flags, pteval, vpn;
- /* Ptrace may call this routine. */
- if (vma && current->active_mm != vma->vm_mm)
+ /*
+ * Handle debugger faulting in for debugee.
+ */
+ if (current->active_mm != vma->vm_mm)
return;
- page = pfn_to_page(pfn);
- if (pfn_valid(pfn) && page_mapping(page)) {
-#ifndef CONFIG_SMP
- int dirty = test_and_clear_bit(PG_dcache_dirty, &page->flags);
- if (dirty) {
-
- unsigned long addr = (unsigned long)page_address(page);
-
- if (pages_do_alias(addr, address & PAGE_MASK))
- __flush_wback_region((void *)addr, PAGE_SIZE);
- }
-#endif
- }
-
local_irq_save(flags);
/* Set PTEH register */
diff --git a/arch/sh/mm/tlbflush_64.c b/arch/sh/mm/tlbflush_64.c
index 3ce40ea34824..f2e44e9ffb75 100644
--- a/arch/sh/mm/tlbflush_64.c
+++ b/arch/sh/mm/tlbflush_64.c
@@ -329,22 +329,6 @@ do_sigbus:
goto no_context;
}
-void update_mmu_cache(struct vm_area_struct * vma,
- unsigned long address, pte_t pte)
-{
- /*
- * This appears to get called once for every pte entry that gets
- * established => I don't think it's efficient to try refilling the
- * TLBs with the pages - some may not get accessed even. Also, for
- * executable pages, it is impossible to determine reliably here which
- * TLB they should be mapped into (or both even).
- *
- * So, just do nothing here and handle faults on demand. In the
- * TLBMISS handling case, the refill is now done anyway after the pte
- * has been fixed up, so that deals with most useful cases.
- */
-}
-
void local_flush_tlb_one(unsigned long asid, unsigned long page)
{
unsigned long long match, pteh=0, lpage;
@@ -482,3 +466,12 @@ void local_flush_tlb_kernel_range(unsigned long start, unsigned long end)
/* FIXME: Optimize this later.. */
flush_tlb_all();
}
+
+void __update_tlb(struct vm_area_struct *vma, unsigned long address, pte_t pte)
+{
+}
+
+void __update_cache(struct vm_area_struct *vma,
+ unsigned long address, pte_t pte)
+{
+}
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