diff options
Diffstat (limited to 'arch/sparc/mm/generic_32.c')
| -rw-r--r-- | arch/sparc/mm/generic_32.c | 99 |
1 files changed, 0 insertions, 99 deletions
diff --git a/arch/sparc/mm/generic_32.c b/arch/sparc/mm/generic_32.c deleted file mode 100644 index 6ca39a60a196..000000000000 --- a/arch/sparc/mm/generic_32.c +++ /dev/null | |||
| @@ -1,99 +0,0 @@ | |||
| 1 | /* | ||
| 2 | * generic.c: Generic Sparc mm routines that are not dependent upon | ||
| 3 | * MMU type but are Sparc specific. | ||
| 4 | * | ||
| 5 | * Copyright (C) 1996 David S. Miller (davem@caip.rutgers.edu) | ||
| 6 | */ | ||
| 7 | |||
| 8 | #include <linux/kernel.h> | ||
| 9 | #include <linux/mm.h> | ||
| 10 | #include <linux/swap.h> | ||
| 11 | #include <linux/pagemap.h> | ||
| 12 | #include <linux/export.h> | ||
| 13 | |||
| 14 | #include <asm/pgalloc.h> | ||
| 15 | #include <asm/pgtable.h> | ||
| 16 | #include <asm/page.h> | ||
| 17 | #include <asm/cacheflush.h> | ||
| 18 | #include <asm/tlbflush.h> | ||
| 19 | |||
| 20 | /* Remap IO memory, the same way as remap_pfn_range(), but use | ||
| 21 | * the obio memory space. | ||
| 22 | * | ||
| 23 | * They use a pgprot that sets PAGE_IO and does not check the | ||
| 24 | * mem_map table as this is independent of normal memory. | ||
| 25 | */ | ||
| 26 | static inline void io_remap_pte_range(struct mm_struct *mm, pte_t * pte, unsigned long address, unsigned long size, | ||
| 27 | unsigned long offset, pgprot_t prot, int space) | ||
| 28 | { | ||
| 29 | unsigned long end; | ||
| 30 | |||
| 31 | address &= ~PMD_MASK; | ||
| 32 | end = address + size; | ||
| 33 | if (end > PMD_SIZE) | ||
| 34 | end = PMD_SIZE; | ||
| 35 | do { | ||
| 36 | set_pte_at(mm, address, pte, mk_pte_io(offset, prot, space)); | ||
| 37 | address += PAGE_SIZE; | ||
| 38 | offset += PAGE_SIZE; | ||
| 39 | pte++; | ||
| 40 | } while (address < end); | ||
| 41 | } | ||
| 42 | |||
| 43 | static inline int io_remap_pmd_range(struct mm_struct *mm, pmd_t * pmd, unsigned long address, unsigned long size, | ||
| 44 | unsigned long offset, pgprot_t prot, int space) | ||
| 45 | { | ||
| 46 | unsigned long end; | ||
| 47 | |||
| 48 | address &= ~PGDIR_MASK; | ||
| 49 | end = address + size; | ||
| 50 | if (end > PGDIR_SIZE) | ||
| 51 | end = PGDIR_SIZE; | ||
| 52 | offset -= address; | ||
| 53 | do { | ||
| 54 | pte_t *pte = pte_alloc_map(mm, NULL, pmd, address); | ||
| 55 | if (!pte) | ||
| 56 | return -ENOMEM; | ||
| 57 | io_remap_pte_range(mm, pte, address, end - address, address + offset, prot, space); | ||
| 58 | address = (address + PMD_SIZE) & PMD_MASK; | ||
| 59 | pmd++; | ||
| 60 | } while (address < end); | ||
| 61 | return 0; | ||
| 62 | } | ||
| 63 | |||
| 64 | int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from, | ||
| 65 | unsigned long pfn, unsigned long size, pgprot_t prot) | ||
| 66 | { | ||
| 67 | int error = 0; | ||
| 68 | pgd_t * dir; | ||
| 69 | unsigned long beg = from; | ||
| 70 | unsigned long end = from + size; | ||
| 71 | struct mm_struct *mm = vma->vm_mm; | ||
| 72 | int space = GET_IOSPACE(pfn); | ||
| 73 | unsigned long offset = GET_PFN(pfn) << PAGE_SHIFT; | ||
| 74 | |||
| 75 | /* See comment in mm/memory.c remap_pfn_range */ | ||
| 76 | vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP; | ||
| 77 | vma->vm_pgoff = (offset >> PAGE_SHIFT) | | ||
| 78 | ((unsigned long)space << 28UL); | ||
| 79 | |||
| 80 | offset -= from; | ||
| 81 | dir = pgd_offset(mm, from); | ||
| 82 | flush_cache_range(vma, beg, end); | ||
| 83 | |||
| 84 | while (from < end) { | ||
| 85 | pmd_t *pmd = pmd_alloc(mm, dir, from); | ||
| 86 | error = -ENOMEM; | ||
| 87 | if (!pmd) | ||
| 88 | break; | ||
| 89 | error = io_remap_pmd_range(mm, pmd, from, end - from, offset + from, prot, space); | ||
| 90 | if (error) | ||
| 91 | break; | ||
| 92 | from = (from + PGDIR_SIZE) & PGDIR_MASK; | ||
| 93 | dir++; | ||
| 94 | } | ||
| 95 | |||
| 96 | flush_tlb_range(vma, beg, end); | ||
| 97 | return error; | ||
| 98 | } | ||
| 99 | EXPORT_SYMBOL(io_remap_pfn_range); | ||
