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authorDavid S. Miller <davem@davemloft.net>2005-09-02 00:51:26 -0400
committerDavid S. Miller <davem@davemloft.net>2005-09-02 00:51:26 -0400
commita7a6cac204147634aba7487e4d618b028ff54c0d (patch)
tree8c68a738984d823a830e95c72fd3df4d6c4dc6f6 /arch/sparc/mm
parent8a36895c0ddac143b7f0e87d46153f4f75d9fff7 (diff)
[SPARC]: Kill io_remap_page_range()
It's been deprecated long enough and there are no in-tree users any longer. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm')
-rw-r--r--arch/sparc/mm/generic.c57
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
19static 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
91int 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
122int io_remap_pfn_range(struct vm_area_struct *vma, unsigned long from, 65int 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{