diff options
author | Matthew Wilcox <matthew@wil.cx> | 2006-10-13 14:32:50 -0400 |
---|---|---|
committer | Kyle McMartin <kyle@ubuntu.com> | 2006-12-08 00:33:54 -0500 |
commit | 58554927f85616c374795fbddcf0607a3faa7c46 (patch) | |
tree | 9def4f84ccae8753b07a252d5f4e7d139c4685b9 /arch/parisc/mm | |
parent | c99767974ebd2a719d849fdeaaa1674456f5283f (diff) |
[PARISC] Delete arch/parisc/mm/kmap.c again
I deleted this file from 2.4 5 years ago. Unfortunately, that change
never got merged to Linus and so when we switched to 2.5 it came back
and nobody noticed. It's never been built in 2.5/2.6 as it was never
in the Makefile.
Signed-off-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
Diffstat (limited to 'arch/parisc/mm')
-rw-r--r-- | arch/parisc/mm/kmap.c | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/arch/parisc/mm/kmap.c b/arch/parisc/mm/kmap.c deleted file mode 100644 index 1b1acd5e2f6e..000000000000 --- a/arch/parisc/mm/kmap.c +++ /dev/null | |||
@@ -1,166 +0,0 @@ | |||
1 | /* | ||
2 | * kmap/page table map and unmap support routines | ||
3 | * | ||
4 | * Copyright 1999,2000 Hewlett-Packard Company | ||
5 | * Copyright 2000 John Marvin <jsm at hp.com> | ||
6 | * Copyright 2000 Grant Grundler <grundler at parisc-linux.org> | ||
7 | * Copyright 2000 Philipp Rumpf <prumpf@tux.org> | ||
8 | * | ||
9 | * | ||
10 | * This program is free software; you can redistribute it and/or modify | ||
11 | * it under the terms of the GNU General Public License as published by | ||
12 | * the Free Software Foundation; either version 2 of the License, or | ||
13 | * (at your option) any later version. | ||
14 | * | ||
15 | * This program is distributed in the hope that it will be useful, | ||
16 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
17 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
18 | * GNU General Public License for more details. | ||
19 | * | ||
20 | * You should have received a copy of the GNU General Public License | ||
21 | * along with this program; if not, write to the Free Software | ||
22 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
23 | */ | ||
24 | /* | ||
25 | ** Stolen mostly from arch/parisc/kernel/pci-dma.c | ||
26 | */ | ||
27 | |||
28 | #include <linux/types.h> | ||
29 | #include <linux/mm.h> | ||
30 | #include <linux/string.h> | ||
31 | #include <linux/pci.h> | ||
32 | |||
33 | #include <linux/slab.h> | ||
34 | #include <linux/vmalloc.h> | ||
35 | |||
36 | #include <asm/uaccess.h> | ||
37 | #include <asm/pgalloc.h> | ||
38 | |||
39 | #include <asm/io.h> | ||
40 | #include <asm/page.h> /* get_order */ | ||
41 | |||
42 | #undef flush_cache_all | ||
43 | #define flush_cache_all flush_all_caches | ||
44 | |||
45 | typedef void (*pte_iterator_t) (pte_t * pte, unsigned long arg); | ||
46 | |||
47 | #if 0 | ||
48 | /* XXX This routine could be used with iterate_page() to replace | ||
49 | * unmap_uncached_page() and save a little code space but I didn't | ||
50 | * do that since I'm not certain whether this is the right path. -PB | ||
51 | */ | ||
52 | static void unmap_cached_pte(pte_t * pte, unsigned long addr, unsigned long arg) | ||
53 | { | ||
54 | pte_t page = *pte; | ||
55 | pte_clear(&init_mm, addr, pte); | ||
56 | if (!pte_none(page)) { | ||
57 | if (pte_present(page)) { | ||
58 | unsigned long map_nr = pte_pagenr(page); | ||
59 | if (map_nr < max_mapnr) | ||
60 | __free_page(mem_map + map_nr); | ||
61 | } else { | ||
62 | printk(KERN_CRIT | ||
63 | "Whee.. Swapped out page in kernel page table\n"); | ||
64 | } | ||
65 | } | ||
66 | } | ||
67 | #endif | ||
68 | |||
69 | /* These two routines should probably check a few things... */ | ||
70 | static void set_uncached(pte_t * pte, unsigned long arg) | ||
71 | { | ||
72 | pte_val(*pte) |= _PAGE_NO_CACHE; | ||
73 | } | ||
74 | |||
75 | static void set_cached(pte_t * pte, unsigned long arg) | ||
76 | { | ||
77 | pte_val(*pte) &= ~_PAGE_NO_CACHE; | ||
78 | } | ||
79 | |||
80 | static inline void iterate_pte(pmd_t * pmd, unsigned long address, | ||
81 | unsigned long size, pte_iterator_t op, | ||
82 | unsigned long arg) | ||
83 | { | ||
84 | pte_t *pte; | ||
85 | unsigned long end; | ||
86 | |||
87 | if (pmd_none(*pmd)) | ||
88 | return; | ||
89 | if (pmd_bad(*pmd)) { | ||
90 | pmd_ERROR(*pmd); | ||
91 | pmd_clear(pmd); | ||
92 | return; | ||
93 | } | ||
94 | pte = pte_offset(pmd, address); | ||
95 | address &= ~PMD_MASK; | ||
96 | end = address + size; | ||
97 | if (end > PMD_SIZE) | ||
98 | end = PMD_SIZE; | ||
99 | do { | ||
100 | op(pte, arg); | ||
101 | address += PAGE_SIZE; | ||
102 | pte++; | ||
103 | } while (address < end); | ||
104 | } | ||
105 | |||
106 | static inline void iterate_pmd(pgd_t * dir, unsigned long address, | ||
107 | unsigned long size, pte_iterator_t op, | ||
108 | unsigned long arg) | ||
109 | { | ||
110 | pmd_t *pmd; | ||
111 | unsigned long end; | ||
112 | |||
113 | if (pgd_none(*dir)) | ||
114 | return; | ||
115 | if (pgd_bad(*dir)) { | ||
116 | pgd_ERROR(*dir); | ||
117 | pgd_clear(dir); | ||
118 | return; | ||
119 | } | ||
120 | pmd = pmd_offset(dir, address); | ||
121 | address &= ~PGDIR_MASK; | ||
122 | end = address + size; | ||
123 | if (end > PGDIR_SIZE) | ||
124 | end = PGDIR_SIZE; | ||
125 | do { | ||
126 | iterate_pte(pmd, address, end - address, op, arg); | ||
127 | address = (address + PMD_SIZE) & PMD_MASK; | ||
128 | pmd++; | ||
129 | } while (address < end); | ||
130 | } | ||
131 | |||
132 | static void iterate_pages(unsigned long address, unsigned long size, | ||
133 | pte_iterator_t op, unsigned long arg) | ||
134 | { | ||
135 | pgd_t *dir; | ||
136 | unsigned long end = address + size; | ||
137 | |||
138 | dir = pgd_offset_k(address); | ||
139 | flush_cache_all(); | ||
140 | do { | ||
141 | iterate_pmd(dir, address, end - address, op, arg); | ||
142 | address = (address + PGDIR_SIZE) & PGDIR_MASK; | ||
143 | dir++; | ||
144 | } while (address && (address < end)); | ||
145 | flush_tlb_all(); | ||
146 | } | ||
147 | |||
148 | void | ||
149 | kernel_set_cachemode(unsigned long vaddr, unsigned long size, int what) | ||
150 | { | ||
151 | switch (what) { | ||
152 | case IOMAP_FULL_CACHING: | ||
153 | iterate_pages(vaddr, size, set_cached, 0); | ||
154 | flush_tlb_range(NULL, vaddr, size); | ||
155 | break; | ||
156 | case IOMAP_NOCACHE_SER: | ||
157 | iterate_pages(vaddr, size, set_uncached, 0); | ||
158 | flush_tlb_range(NULL, vaddr, size); | ||
159 | break; | ||
160 | default: | ||
161 | printk(KERN_CRIT | ||
162 | "kernel_set_cachemode mode %d not understood\n", | ||
163 | what); | ||
164 | break; | ||
165 | } | ||
166 | } | ||