diff options
Diffstat (limited to 'arch/sparc/mm/generic.c')
| -rw-r--r-- | arch/sparc/mm/generic.c | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/arch/sparc/mm/generic.c b/arch/sparc/mm/generic.c index db27eee3bda1..20ccb957fb77 100644 --- a/arch/sparc/mm/generic.c +++ b/arch/sparc/mm/generic.c | |||
| @@ -16,31 +16,6 @@ | |||
| 16 | #include <asm/cacheflush.h> | 16 | #include <asm/cacheflush.h> |
| 17 | #include <asm/tlbflush.h> | 17 | #include <asm/tlbflush.h> |
| 18 | 18 | ||
| 19 | static inline void forget_pte(pte_t page) | ||
| 20 | { | ||
| 21 | #if 0 /* old 2.4 code */ | ||
| 22 | if (pte_none(page)) | ||
| 23 | return; | ||
| 24 | if (pte_present(page)) { | ||
| 25 | unsigned long pfn = pte_pfn(page); | ||
| 26 | struct page *ptpage; | ||
| 27 | if (!pfn_valid(pfn)) | ||
| 28 | return; | ||
| 29 | ptpage = pfn_to_page(pfn); | ||
| 30 | if (PageReserved(ptpage)) | ||
| 31 | return; | ||
| 32 | page_cache_release(ptpage); | ||
| 33 | return; | ||
| 34 | } | ||
| 35 | swap_free(pte_to_swp_entry(page)); | ||
| 36 | #else | ||
| 37 | if (!pte_none(page)) { | ||
| 38 | printk("forget_pte: old mapping existed!\n"); | ||
| 39 | BUG(); | ||
| 40 | } | ||
| 41 | #endif | ||
| 42 | } | ||
| 43 | |||
| 44 | /* Remap IO memory, the same way as remap_pfn_range(), but use | 19 | /* Remap IO memory, the same way as remap_pfn_range(), but use |
| 45 | * the obio memory space. | 20 | * the obio memory space. |
| 46 | * | 21 | * |
| @@ -60,7 +35,6 @@ static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte, unsigne | |||
| 60 | pte_t oldpage = *pte; | 35 | pte_t oldpage = *pte; |
| 61 | pte_clear(mm, address, pte); | 36 | pte_clear(mm, address, pte); |
| 62 | set_pte(pte, mk_pte_io(offset, prot, space)); | 37 | set_pte(pte, mk_pte_io(offset, prot, space)); |
| 63 | forget_pte(oldpage); | ||
| 64 | address += PAGE_SIZE; | 38 | address += PAGE_SIZE; |
| 65 | offset += PAGE_SIZE; | 39 | offset += PAGE_SIZE; |
| 66 | pte++; | 40 | pte++; |
| @@ -88,37 +62,6 @@ static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned | |||
| 88 | return 0; | 62 | return 0; |
| 89 | } | 63 | } |
| 90 | 64 | ||
| 91 | int io_remap_page_range(struct vm_area_struct *vma, unsigned long from, unsigned long offset, unsigned long size, pgprot_t prot, int space) | ||
| 92 | { | ||
| 93 | int error = 0; | ||
| 94 | pgd_t * dir; | ||
| 95 | unsigned long beg = from; | ||
| 96 | unsigned long end = from + size; | ||
| 97 | struct mm_struct *mm = vma->vm_mm; | ||
| 98 | |||
| 99 | prot = __pgprot(pg_iobits); | ||
| 100 | offset -= from; | ||
| 101 | dir = pgd_offset(mm, from); | ||
| 102 | flush_cache_range(vma, beg, end); | ||
| 103 | |||
| 104 | spin_lock(&mm->page_table_lock); | ||
| 105 | while (from < end) { | ||
| 106 | pmd_t *pmd = pmd_alloc(current->mm, dir, from); | ||
| 107 | error = -ENOMEM; | ||
| 108 | if (!pmd) | ||
| 109 | break; | ||
| 110 | error = io_remap_pmd_range(mm, pmd, from, end - from, offset + from, prot, space); | ||
| 111 | if (error) | ||
| 112 | break; | ||
| 113 | from = (from + PGDIR_SIZE) & PGDIR_MASK; | ||
| 114 | dir++; | ||
| 115 | } | ||
| 116 | spin_unlock(&mm->page_table_lock); | ||
| 117 | |||
| 118 | flush_tlb_range(vma, beg, end); | ||
| 119 | return error; | ||
| 120 | } | ||
| 121 | |||
| 122 | int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from, | 65 | int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from, |
| 123 | unsigned long pfn, unsigned long size, pgprot_t prot) | 66 | unsigned long pfn, unsigned long size, pgprot_t prot) |
| 124 | { | 67 | { |
