diff options
Diffstat (limited to 'arch/sh/mm/pg-sh7705.c')
-rw-r--r-- | arch/sh/mm/pg-sh7705.c | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/arch/sh/mm/pg-sh7705.c b/arch/sh/mm/pg-sh7705.c deleted file mode 100644 index eaf25147194c..000000000000 --- a/arch/sh/mm/pg-sh7705.c +++ /dev/null | |||
@@ -1,138 +0,0 @@ | |||
1 | /* | ||
2 | * arch/sh/mm/pg-sh7705.c | ||
3 | * | ||
4 | * Copyright (C) 1999, 2000 Niibe Yutaka | ||
5 | * Copyright (C) 2004 Alex Song | ||
6 | * | ||
7 | * This file is subject to the terms and conditions of the GNU General Public | ||
8 | * License. See the file "COPYING" in the main directory of this archive | ||
9 | * for more details. | ||
10 | * | ||
11 | */ | ||
12 | |||
13 | #include <linux/init.h> | ||
14 | #include <linux/mman.h> | ||
15 | #include <linux/mm.h> | ||
16 | #include <linux/threads.h> | ||
17 | #include <linux/fs.h> | ||
18 | #include <asm/addrspace.h> | ||
19 | #include <asm/page.h> | ||
20 | #include <asm/pgtable.h> | ||
21 | #include <asm/processor.h> | ||
22 | #include <asm/cache.h> | ||
23 | #include <asm/io.h> | ||
24 | #include <asm/uaccess.h> | ||
25 | #include <asm/pgalloc.h> | ||
26 | #include <asm/mmu_context.h> | ||
27 | #include <asm/cacheflush.h> | ||
28 | |||
29 | static inline void __flush_purge_virtual_region(void *p1, void *virt, int size) | ||
30 | { | ||
31 | unsigned long v; | ||
32 | unsigned long begin, end; | ||
33 | unsigned long p1_begin; | ||
34 | |||
35 | |||
36 | begin = L1_CACHE_ALIGN((unsigned long)virt); | ||
37 | end = L1_CACHE_ALIGN((unsigned long)virt + size); | ||
38 | |||
39 | p1_begin = (unsigned long)p1 & ~(L1_CACHE_BYTES - 1); | ||
40 | |||
41 | /* do this the slow way as we may not have TLB entries | ||
42 | * for virt yet. */ | ||
43 | for (v = begin; v < end; v += L1_CACHE_BYTES) { | ||
44 | unsigned long p; | ||
45 | unsigned long ways, addr; | ||
46 | |||
47 | p = __pa(p1_begin); | ||
48 | |||
49 | ways = current_cpu_data.dcache.ways; | ||
50 | addr = CACHE_OC_ADDRESS_ARRAY; | ||
51 | |||
52 | do { | ||
53 | unsigned long data; | ||
54 | |||
55 | addr |= (v & current_cpu_data.dcache.entry_mask); | ||
56 | |||
57 | data = ctrl_inl(addr); | ||
58 | if ((data & CACHE_PHYSADDR_MASK) == | ||
59 | (p & CACHE_PHYSADDR_MASK)) { | ||
60 | data &= ~(SH_CACHE_UPDATED|SH_CACHE_VALID); | ||
61 | ctrl_outl(data, addr); | ||
62 | } | ||
63 | |||
64 | addr += current_cpu_data.dcache.way_incr; | ||
65 | } while (--ways); | ||
66 | |||
67 | p1_begin += L1_CACHE_BYTES; | ||
68 | } | ||
69 | } | ||
70 | |||
71 | /* | ||
72 | * clear_user_page | ||
73 | * @to: P1 address | ||
74 | * @address: U0 address to be mapped | ||
75 | */ | ||
76 | void clear_user_page(void *to, unsigned long address, struct page *pg) | ||
77 | { | ||
78 | struct page *page = virt_to_page(to); | ||
79 | |||
80 | __set_bit(PG_mapped, &page->flags); | ||
81 | if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) { | ||
82 | clear_page(to); | ||
83 | __flush_wback_region(to, PAGE_SIZE); | ||
84 | } else { | ||
85 | __flush_purge_virtual_region(to, | ||
86 | (void *)(address & 0xfffff000), | ||
87 | PAGE_SIZE); | ||
88 | clear_page(to); | ||
89 | __flush_wback_region(to, PAGE_SIZE); | ||
90 | } | ||
91 | } | ||
92 | |||
93 | /* | ||
94 | * copy_user_page | ||
95 | * @to: P1 address | ||
96 | * @from: P1 address | ||
97 | * @address: U0 address to be mapped | ||
98 | */ | ||
99 | void copy_user_page(void *to, void *from, unsigned long address, struct page *pg) | ||
100 | { | ||
101 | struct page *page = virt_to_page(to); | ||
102 | |||
103 | |||
104 | __set_bit(PG_mapped, &page->flags); | ||
105 | if (((address ^ (unsigned long)to) & CACHE_ALIAS) == 0) { | ||
106 | copy_page(to, from); | ||
107 | __flush_wback_region(to, PAGE_SIZE); | ||
108 | } else { | ||
109 | __flush_purge_virtual_region(to, | ||
110 | (void *)(address & 0xfffff000), | ||
111 | PAGE_SIZE); | ||
112 | copy_page(to, from); | ||
113 | __flush_wback_region(to, PAGE_SIZE); | ||
114 | } | ||
115 | } | ||
116 | |||
117 | /* | ||
118 | * For SH7705, we have our own implementation for ptep_get_and_clear | ||
119 | * Copied from pg-sh4.c | ||
120 | */ | ||
121 | pte_t ptep_get_and_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep) | ||
122 | { | ||
123 | pte_t pte = *ptep; | ||
124 | |||
125 | pte_clear(mm, addr, ptep); | ||
126 | if (!pte_not_present(pte)) { | ||
127 | unsigned long pfn = pte_pfn(pte); | ||
128 | if (pfn_valid(pfn)) { | ||
129 | struct page *page = pfn_to_page(pfn); | ||
130 | struct address_space *mapping = page_mapping(page); | ||
131 | if (!mapping || !mapping_writably_mapped(mapping)) | ||
132 | __clear_bit(PG_mapped, &page->flags); | ||
133 | } | ||
134 | } | ||
135 | |||
136 | return pte; | ||
137 | } | ||
138 | |||