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-rw-r--r--arch/sh/include/asm/cacheflush.h2
-rw-r--r--arch/sh/include/asm/pgtable_32.h8
-rw-r--r--arch/sh/include/asm/pgtable_64.h5
-rw-r--r--arch/sh/mm/cache.c8
-rw-r--r--arch/sh/mm/fault_32.c4
-rw-r--r--arch/sh/mm/init.c45
-rw-r--r--arch/sh/mm/kmap.c36
-rw-r--r--arch/sh/mm/nommu.c2
8 files changed, 62 insertions, 48 deletions
diff --git a/arch/sh/include/asm/cacheflush.h b/arch/sh/include/asm/cacheflush.h
index 11e4166..c29918f 100644
--- a/arch/sh/include/asm/cacheflush.h
+++ b/arch/sh/include/asm/cacheflush.h
@@ -85,7 +85,7 @@ extern void copy_from_user_page(struct vm_area_struct *vma,
void kmap_coherent_init(void);
void *kmap_coherent(struct page *page, unsigned long addr);
-void kunmap_coherent(void);
+void kunmap_coherent(void *kvaddr);
#define PG_dcache_dirty PG_arch_1
diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h
index 4c4429c..c0d359c 100644
--- a/arch/sh/include/asm/pgtable_32.h
+++ b/arch/sh/include/asm/pgtable_32.h
@@ -408,13 +408,19 @@ static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
/* to find an entry in a page-table-directory. */
#define pgd_index(address) (((address) >> PGDIR_SHIFT) & (PTRS_PER_PGD-1))
-#define pgd_offset(mm, address) ((mm)->pgd+pgd_index(address))
+#define pgd_offset(mm, address) ((mm)->pgd + pgd_index(address))
+#define __pgd_offset(address) pgd_index(address)
/* to find an entry in a kernel page-table-directory */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
+#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+
/* Find an entry in the third-level page table.. */
#define pte_index(address) ((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define __pte_offset(address) pte_index(address)
+
#define pte_offset_kernel(dir, address) \
((pte_t *) pmd_page_vaddr(*(dir)) + pte_index(address))
#define pte_offset_map(dir, address) pte_offset_kernel(dir, address)
diff --git a/arch/sh/include/asm/pgtable_64.h b/arch/sh/include/asm/pgtable_64.h
index c78990c..17cdbec 100644
--- a/arch/sh/include/asm/pgtable_64.h
+++ b/arch/sh/include/asm/pgtable_64.h
@@ -60,6 +60,9 @@ static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep)
/* To find an entry in a kernel PGD. */
#define pgd_offset_k(address) pgd_offset(&init_mm, address)
+#define __pud_offset(address) (((address) >> PUD_SHIFT) & (PTRS_PER_PUD-1))
+#define __pmd_offset(address) (((address) >> PMD_SHIFT) & (PTRS_PER_PMD-1))
+
/*
* PMD level access routines. Same notes as above.
*/
@@ -80,6 +83,8 @@ static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep)
#define pte_index(address) \
((address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1))
+#define __pte_offset(address) pte_index(address)
+
#define pte_offset_kernel(dir, addr) \
((pte_t *) ((pmd_val(*(dir))) & PAGE_MASK) + pte_index((addr)))
diff --git a/arch/sh/mm/cache.c b/arch/sh/mm/cache.c
index db2b1c5..8e4a8d1 100644
--- a/arch/sh/mm/cache.c
+++ b/arch/sh/mm/cache.c
@@ -51,7 +51,7 @@ void copy_to_user_page(struct vm_area_struct *vma, struct page *page,
!test_bit(PG_dcache_dirty, &page->flags)) {
void *vto = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
memcpy(vto, src, len);
- kunmap_coherent();
+ kunmap_coherent(vto);
} else {
memcpy(dst, src, len);
if (boot_cpu_data.dcache.n_aliases)
@@ -70,7 +70,7 @@ void copy_from_user_page(struct vm_area_struct *vma, struct page *page,
!test_bit(PG_dcache_dirty, &page->flags)) {
void *vfrom = kmap_coherent(page, vaddr) + (vaddr & ~PAGE_MASK);
memcpy(dst, vfrom, len);
- kunmap_coherent();
+ kunmap_coherent(vfrom);
} else {
memcpy(dst, src, len);
if (boot_cpu_data.dcache.n_aliases)
@@ -89,7 +89,7 @@ void copy_user_highpage(struct page *to, struct page *from,
!test_bit(PG_dcache_dirty, &from->flags)) {
vfrom = kmap_coherent(from, vaddr);
copy_page(vto, vfrom);
- kunmap_coherent();
+ kunmap_coherent(vfrom);
} else {
vfrom = kmap_atomic(from, KM_USER0);
copy_page(vto, vfrom);
@@ -150,7 +150,7 @@ void __flush_anon_page(struct page *page, unsigned long vmaddr)
kaddr = kmap_coherent(page, vmaddr);
__flush_wback_region((void *)kaddr, PAGE_SIZE);
- kunmap_coherent();
+ kunmap_coherent(kaddr);
} else
__flush_wback_region((void *)addr, PAGE_SIZE);
}
diff --git a/arch/sh/mm/fault_32.c b/arch/sh/mm/fault_32.c
index f1c93c8..781b413 100644
--- a/arch/sh/mm/fault_32.c
+++ b/arch/sh/mm/fault_32.c
@@ -82,8 +82,8 @@ static noinline int vmalloc_fault(unsigned long address)
pmd_t *pmd_k;
pte_t *pte_k;
- /* Make sure we are in vmalloc area: */
- if (!(address >= VMALLOC_START && address < VMALLOC_END))
+ /* Make sure we are in vmalloc/module/P3 area: */
+ if (!(address >= VMALLOC_START && address < P3_ADDR_MAX))
return -1;
/*
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index 0a9b4d8..edc842f 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -106,27 +106,31 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
pgd_t *pgd;
pud_t *pud;
pmd_t *pmd;
- int pgd_idx;
+ pte_t *pte;
+ int i, j, k;
unsigned long vaddr;
- vaddr = start & PMD_MASK;
- end = (end + PMD_SIZE - 1) & PMD_MASK;
- pgd_idx = pgd_index(vaddr);
- pgd = pgd_base + pgd_idx;
-
- for ( ; (pgd_idx < PTRS_PER_PGD) && (vaddr != end); pgd++, pgd_idx++) {
- BUG_ON(pgd_none(*pgd));
- pud = pud_offset(pgd, 0);
- BUG_ON(pud_none(*pud));
- pmd = pmd_offset(pud, 0);
-
- if (!pmd_present(*pmd)) {
- pte_t *pte_table;
- pte_table = (pte_t *)alloc_bootmem_low_pages(PAGE_SIZE);
- pmd_populate_kernel(&init_mm, pmd, pte_table);
+ vaddr = start;
+ i = __pgd_offset(vaddr);
+ j = __pud_offset(vaddr);
+ k = __pmd_offset(vaddr);
+ pgd = pgd_base + i;
+
+ for ( ; (i < PTRS_PER_PGD) && (vaddr != end); pgd++, i++) {
+ pud = (pud_t *)pgd;
+ for ( ; (j < PTRS_PER_PUD) && (vaddr != end); pud++, j++) {
+ pmd = (pmd_t *)pud;
+ for (; (k < PTRS_PER_PMD) && (vaddr != end); pmd++, k++) {
+ if (pmd_none(*pmd)) {
+ pte = (pte_t *) alloc_bootmem_low_pages(PAGE_SIZE);
+ pmd_populate_kernel(&init_mm, pmd, pte);
+ BUG_ON(pte != pte_offset_kernel(pmd, 0));
+ }
+ vaddr += PMD_SIZE;
+ }
+ k = 0;
}
-
- vaddr += PMD_SIZE;
+ j = 0;
}
}
#endif /* CONFIG_MMU */
@@ -137,7 +141,7 @@ void __init page_table_range_init(unsigned long start, unsigned long end,
void __init paging_init(void)
{
unsigned long max_zone_pfns[MAX_NR_ZONES];
- unsigned long vaddr;
+ unsigned long vaddr, end;
int nid;
/* We don't need to map the kernel through the TLB, as
@@ -155,7 +159,8 @@ void __init paging_init(void)
* pte's will be filled in by __set_fixmap().
*/
vaddr = __fix_to_virt(__end_of_fixed_addresses - 1) & PMD_MASK;
- page_table_range_init(vaddr, 0, swapper_pg_dir);
+ end = (FIXADDR_TOP + PMD_SIZE - 1) & PMD_MASK;
+ page_table_range_init(vaddr, end, swapper_pg_dir);
kmap_coherent_init();
diff --git a/arch/sh/mm/kmap.c b/arch/sh/mm/kmap.c
index 3eecf0d..c52cd8c 100644
--- a/arch/sh/mm/kmap.c
+++ b/arch/sh/mm/kmap.c
@@ -24,9 +24,6 @@ void __init kmap_coherent_init(void)
{
unsigned long vaddr;
- if (!boot_cpu_data.dcache.n_aliases)
- return;
-
/* cache the first coherent kmap pte */
vaddr = __fix_to_virt(FIX_CMAP_BEGIN);
kmap_coherent_pte = kmap_get_fixmap_pte(vaddr);
@@ -35,30 +32,31 @@ void __init kmap_coherent_init(void)
void *kmap_coherent(struct page *page, unsigned long addr)
{
enum fixed_addresses idx;
- unsigned long vaddr, flags;
- pte_t pte;
+ unsigned long vaddr;
BUG_ON(test_bit(PG_dcache_dirty, &page->flags));
- inc_preempt_count();
-
- idx = (addr & current_cpu_data.dcache.alias_mask) >> PAGE_SHIFT;
- vaddr = __fix_to_virt(FIX_CMAP_END - idx);
- pte = mk_pte(page, PAGE_KERNEL);
+ pagefault_disable();
- local_irq_save(flags);
- flush_tlb_one(get_asid(), vaddr);
- local_irq_restore(flags);
+ idx = FIX_CMAP_END -
+ ((addr & current_cpu_data.dcache.alias_mask) >> PAGE_SHIFT);
+ vaddr = __fix_to_virt(idx);
- update_mmu_cache(NULL, vaddr, pte);
-
- set_pte(kmap_coherent_pte - (FIX_CMAP_END - idx), pte);
+ BUG_ON(!pte_none(*(kmap_coherent_pte - idx)));
+ set_pte(kmap_coherent_pte - idx, mk_pte(page, PAGE_KERNEL));
return (void *)vaddr;
}
-void kunmap_coherent(void)
+void kunmap_coherent(void *kvaddr)
{
- dec_preempt_count();
- preempt_check_resched();
+ if (kvaddr >= (void *)FIXADDR_START) {
+ unsigned long vaddr = (unsigned long)kvaddr & PAGE_MASK;
+ enum fixed_addresses idx = __virt_to_fix(vaddr);
+
+ pte_clear(&init_mm, vaddr, kmap_coherent_pte - idx);
+ local_flush_tlb_one(get_asid(), vaddr);
+ }
+
+ pagefault_enable();
}
diff --git a/arch/sh/mm/nommu.c b/arch/sh/mm/nommu.c
index 51b5403..ac16c05 100644
--- a/arch/sh/mm/nommu.c
+++ b/arch/sh/mm/nommu.c
@@ -81,7 +81,7 @@ void *kmap_coherent(struct page *page, unsigned long addr)
return NULL;
}
-void kunmap_coherent(void)
+void kunmap_coherent(void *kvaddr)
{
BUG();
}
generated by cgit v1.1 at 2024-12-27 13:40:34 +0000