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-rw-r--r--arch/sparc/mm/generic_32.c99
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 */
26static 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
43static 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
64int 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}
99EXPORT_SYMBOL(io_remap_pfn_range);