fs: use kmem_cache_zalloc instead
[pv_ops_mirror.git] / include / asm-arm / pgtable-hwdef.h
blobf3b5120c99fef34b598dd110790cc008eb815f7e
1 /*
2 * linux/include/asm-arm/pgtable-hwdef.h
4 * Copyright (C) 1995-2002 Russell King
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
9 */
10 #ifndef _ASMARM_PGTABLE_HWDEF_H
11 #define _ASMARM_PGTABLE_HWDEF_H
14 * Hardware page table definitions.
16 * + Level 1 descriptor (PMD)
17 * - common
19 #define PMD_TYPE_MASK (3 << 0)
20 #define PMD_TYPE_FAULT (0 << 0)
21 #define PMD_TYPE_TABLE (1 << 0)
22 #define PMD_TYPE_SECT (2 << 0)
23 #define PMD_BIT4 (1 << 4)
24 #define PMD_DOMAIN(x) ((x) << 5)
25 #define PMD_PROTECTION (1 << 9) /* v5 */
27 * - section
29 #define PMD_SECT_BUFFERABLE (1 << 2)
30 #define PMD_SECT_CACHEABLE (1 << 3)
31 #define PMD_SECT_XN (1 << 4) /* v6 */
32 #define PMD_SECT_AP_WRITE (1 << 10)
33 #define PMD_SECT_AP_READ (1 << 11)
34 #define PMD_SECT_TEX(x) ((x) << 12) /* v5 */
35 #define PMD_SECT_APX (1 << 15) /* v6 */
36 #define PMD_SECT_S (1 << 16) /* v6 */
37 #define PMD_SECT_nG (1 << 17) /* v6 */
38 #define PMD_SECT_SUPER (1 << 18) /* v6 */
40 #define PMD_SECT_UNCACHED (0)
41 #define PMD_SECT_BUFFERED (PMD_SECT_BUFFERABLE)
42 #define PMD_SECT_WT (PMD_SECT_CACHEABLE)
43 #define PMD_SECT_WB (PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
44 #define PMD_SECT_MINICACHE (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE)
45 #define PMD_SECT_WBWA (PMD_SECT_TEX(1) | PMD_SECT_CACHEABLE | PMD_SECT_BUFFERABLE)
46 #define PMD_SECT_NONSHARED_DEV (PMD_SECT_TEX(2))
49 * - coarse table (not used)
53 * + Level 2 descriptor (PTE)
54 * - common
56 #define PTE_TYPE_MASK (3 << 0)
57 #define PTE_TYPE_FAULT (0 << 0)
58 #define PTE_TYPE_LARGE (1 << 0)
59 #define PTE_TYPE_SMALL (2 << 0)
60 #define PTE_TYPE_EXT (3 << 0) /* v5 */
61 #define PTE_BUFFERABLE (1 << 2)
62 #define PTE_CACHEABLE (1 << 3)
65 * - extended small page/tiny page
67 #define PTE_EXT_XN (1 << 0) /* v6 */
68 #define PTE_EXT_AP_MASK (3 << 4)
69 #define PTE_EXT_AP0 (1 << 4)
70 #define PTE_EXT_AP1 (2 << 4)
71 #define PTE_EXT_AP_UNO_SRO (0 << 4)
72 #define PTE_EXT_AP_UNO_SRW (PTE_EXT_AP0)
73 #define PTE_EXT_AP_URO_SRW (PTE_EXT_AP1)
74 #define PTE_EXT_AP_URW_SRW (PTE_EXT_AP1|PTE_EXT_AP0)
75 #define PTE_EXT_TEX(x) ((x) << 6) /* v5 */
76 #define PTE_EXT_APX (1 << 9) /* v6 */
77 #define PTE_EXT_COHERENT (1 << 9) /* XScale3 */
78 #define PTE_EXT_SHARED (1 << 10) /* v6 */
79 #define PTE_EXT_NG (1 << 11) /* v6 */
82 * - small page
84 #define PTE_SMALL_AP_MASK (0xff << 4)
85 #define PTE_SMALL_AP_UNO_SRO (0x00 << 4)
86 #define PTE_SMALL_AP_UNO_SRW (0x55 << 4)
87 #define PTE_SMALL_AP_URO_SRW (0xaa << 4)
88 #define PTE_SMALL_AP_URW_SRW (0xff << 4)
90 #endif