aboutsummaryrefslogtreecommitdiffstats
path: root/include/asm-h8300/page.h
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-h8300/page.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-h8300/page.h')
-rw-r--r--include/asm-h8300/page.h104
1 files changed, 104 insertions, 0 deletions
diff --git a/include/asm-h8300/page.h b/include/asm-h8300/page.h
new file mode 100644
index 000000000000..58b053f1ef3b
--- /dev/null
+++ b/include/asm-h8300/page.h
@@ -0,0 +1,104 @@
1#ifndef _H8300_PAGE_H
2#define _H8300_PAGE_H
3
4#include <linux/config.h>
5
6/* PAGE_SHIFT determines the page size */
7
8#define PAGE_SHIFT (12)
9#define PAGE_SIZE (1UL << PAGE_SHIFT)
10#define PAGE_MASK (~(PAGE_SIZE-1))
11
12#ifdef __KERNEL__
13
14#include <asm/setup.h>
15
16#if !defined(CONFIG_SMALL_TASKS) && PAGE_SHIFT < 13
17#define KTHREAD_SIZE (8192)
18#else
19#define KTHREAD_SIZE PAGE_SIZE
20#endif
21
22#ifndef __ASSEMBLY__
23
24#define get_user_page(vaddr) __get_free_page(GFP_KERNEL)
25#define free_user_page(page, addr) free_page(addr)
26
27#define clear_page(page) memset((page), 0, PAGE_SIZE)
28#define copy_page(to,from) memcpy((to), (from), PAGE_SIZE)
29
30#define clear_user_page(page, vaddr, pg) clear_page(page)
31#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
32
33#define alloc_zeroed_user_highpage(vma, vaddr) alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO, vma, vaddr)
34#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
35
36/*
37 * These are used to make use of C type-checking..
38 */
39typedef struct { unsigned long pte; } pte_t;
40typedef struct { unsigned long pmd[16]; } pmd_t;
41typedef struct { unsigned long pgd; } pgd_t;
42typedef struct { unsigned long pgprot; } pgprot_t;
43
44#define pte_val(x) ((x).pte)
45#define pmd_val(x) ((&x)->pmd[0])
46#define pgd_val(x) ((x).pgd)
47#define pgprot_val(x) ((x).pgprot)
48
49#define __pte(x) ((pte_t) { (x) } )
50#define __pmd(x) ((pmd_t) { (x) } )
51#define __pgd(x) ((pgd_t) { (x) } )
52#define __pgprot(x) ((pgprot_t) { (x) } )
53
54/* to align the pointer to the (next) page boundary */
55#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
56
57/* Pure 2^n version of get_order */
58extern __inline__ int get_order(unsigned long size)
59{
60 int order;
61
62 size = (size-1) >> (PAGE_SHIFT-1);
63 order = -1;
64 do {
65 size >>= 1;
66 order++;
67 } while (size);
68 return order;
69}
70
71extern unsigned long memory_start;
72extern unsigned long memory_end;
73
74#endif /* !__ASSEMBLY__ */
75
76#include <asm/page_offset.h>
77
78#define PAGE_OFFSET (PAGE_OFFSET_RAW)
79
80#ifndef __ASSEMBLY__
81
82#define __pa(vaddr) virt_to_phys((void *)vaddr)
83#define __va(paddr) phys_to_virt((unsigned long)paddr)
84
85#define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT)
86#define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT)
87
88#define MAP_NR(addr) (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT)
89#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
90#define virt_to_page(addr) (mem_map + (((unsigned long)(addr)-PAGE_OFFSET) >> PAGE_SHIFT))
91#define page_to_virt(page) ((((page) - mem_map) << PAGE_SHIFT) + PAGE_OFFSET)
92#define VALID_PAGE(page) ((page - mem_map) < max_mapnr)
93
94#define pfn_to_page(pfn) virt_to_page(pfn_to_virt(pfn))
95#define page_to_pfn(page) virt_to_pfn(page_to_virt(page))
96
97#define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \
98 ((void *)(kaddr) < (void *)memory_end))
99
100#endif /* __ASSEMBLY__ */
101
102#endif /* __KERNEL__ */
103
104#endif /* _H8300_PAGE_H */