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Diffstat (limited to 'arch/nds32/mm/cacheflush.c')
-rw-r--r--arch/nds32/mm/cacheflush.c74
1 files changed, 60 insertions, 14 deletions
diff --git a/arch/nds32/mm/cacheflush.c b/arch/nds32/mm/cacheflush.c
index 6eb786a399a2..ce8fd34497bf 100644
--- a/arch/nds32/mm/cacheflush.c
+++ b/arch/nds32/mm/cacheflush.c
@@ -147,6 +147,25 @@ void flush_cache_vunmap(unsigned long start, unsigned long end)
cpu_icache_inval_all();
}
+void copy_user_page(void *vto, void *vfrom, unsigned long vaddr,
+ struct page *to)
+{
+ cpu_dcache_wbinval_page((unsigned long)vaddr);
+ cpu_icache_inval_page((unsigned long)vaddr);
+ copy_page(vto, vfrom);
+ cpu_dcache_wbinval_page((unsigned long)vto);
+ cpu_icache_inval_page((unsigned long)vto);
+}
+
+void clear_user_page(void *addr, unsigned long vaddr, struct page *page)
+{
+ cpu_dcache_wbinval_page((unsigned long)vaddr);
+ cpu_icache_inval_page((unsigned long)vaddr);
+ clear_page(addr);
+ cpu_dcache_wbinval_page((unsigned long)addr);
+ cpu_icache_inval_page((unsigned long)addr);
+}
+
void copy_user_highpage(struct page *to, struct page *from,
unsigned long vaddr, struct vm_area_struct *vma)
{
@@ -156,11 +175,9 @@ void copy_user_highpage(struct page *to, struct page *from,
pto = page_to_phys(to);
pfrom = page_to_phys(from);
+ local_irq_save(flags);
if (aliasing(vaddr, (unsigned long)kfrom))
cpu_dcache_wb_page((unsigned long)kfrom);
- if (aliasing(vaddr, (unsigned long)kto))
- cpu_dcache_inval_page((unsigned long)kto);
- local_irq_save(flags);
vto = kremap0(vaddr, pto);
vfrom = kremap1(vaddr, pfrom);
copy_page((void *)vto, (void *)vfrom);
@@ -198,21 +215,25 @@ void flush_dcache_page(struct page *page)
if (mapping && !mapping_mapped(mapping))
set_bit(PG_dcache_dirty, &page->flags);
else {
- int i, pc;
- unsigned long vto, kaddr, flags;
+ unsigned long kaddr, flags;
+
kaddr = (unsigned long)page_address(page);
- cpu_dcache_wbinval_page(kaddr);
- pc = CACHE_SET(DCACHE) * CACHE_LINE_SIZE(DCACHE) / PAGE_SIZE;
local_irq_save(flags);
- for (i = 0; i < pc; i++) {
- vto =
- kremap0(kaddr + i * PAGE_SIZE, page_to_phys(page));
- cpu_dcache_wbinval_page(vto);
- kunmap01(vto);
+ cpu_dcache_wbinval_page(kaddr);
+ if (mapping) {
+ unsigned long vaddr, kto;
+
+ vaddr = page->index << PAGE_SHIFT;
+ if (aliasing(vaddr, kaddr)) {
+ kto = kremap0(vaddr, page_to_phys(page));
+ cpu_dcache_wbinval_page(kto);
+ kunmap01(kto);
+ }
}
local_irq_restore(flags);
}
}
+EXPORT_SYMBOL(flush_dcache_page);
void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
unsigned long vaddr, void *dst, void *src, int len)
@@ -251,7 +272,7 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
void flush_anon_page(struct vm_area_struct *vma,
struct page *page, unsigned long vaddr)
{
- unsigned long flags;
+ unsigned long kaddr, flags, ktmp;
if (!PageAnon(page))
return;
@@ -261,7 +282,12 @@ void flush_anon_page(struct vm_area_struct *vma,
local_irq_save(flags);
if (vma->vm_flags & VM_EXEC)
cpu_icache_inval_page(vaddr & PAGE_MASK);
- cpu_dcache_wbinval_page((unsigned long)page_address(page));
+ kaddr = (unsigned long)page_address(page);
+ if (aliasing(vaddr, kaddr)) {
+ ktmp = kremap0(vaddr, page_to_phys(page));
+ cpu_dcache_wbinval_page(ktmp);
+ kunmap01(ktmp);
+ }
local_irq_restore(flags);
}
@@ -272,6 +298,25 @@ void flush_kernel_dcache_page(struct page *page)
cpu_dcache_wbinval_page((unsigned long)page_address(page));
local_irq_restore(flags);
}
+EXPORT_SYMBOL(flush_kernel_dcache_page);
+
+void flush_kernel_vmap_range(void *addr, int size)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+ cpu_dcache_wb_range((unsigned long)addr, (unsigned long)addr + size);
+ local_irq_restore(flags);
+}
+EXPORT_SYMBOL(flush_kernel_vmap_range);
+
+void invalidate_kernel_vmap_range(void *addr, int size)
+{
+ unsigned long flags;
+ local_irq_save(flags);
+ cpu_dcache_inval_range((unsigned long)addr, (unsigned long)addr + size);
+ local_irq_restore(flags);
+}
+EXPORT_SYMBOL(invalidate_kernel_vmap_range);
void flush_icache_range(unsigned long start, unsigned long end)
{
@@ -283,6 +328,7 @@ void flush_icache_range(unsigned long start, unsigned long end)
cpu_cache_wbinval_range(start, end, 1);
local_irq_restore(flags);
}
+EXPORT_SYMBOL(flush_icache_range);
void flush_icache_page(struct vm_area_struct *vma, struct page *page)
{