blob: 12730b81cd9841560fa3f710e080bfa7632ae947 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_POWERPC_NOHASH_PTE_BOOK3E_H
#define _ASM_POWERPC_NOHASH_PTE_BOOK3E_H
#ifdef __KERNEL__
/* PTE bit definitions for processors compliant to the Book3E
* architecture 2.06 or later. The position of the PTE bits
* matches the HW definition of the optional Embedded Page Table
* category.
*/
/* Architected bits */
#define _PAGE_PRESENT 0x000001 /* software: pte contains a translation */
#define _PAGE_SW1 0x000002
#define _PAGE_BIT_SWAP_TYPE 2
#define _PAGE_BAP_SR 0x000004
#define _PAGE_BAP_UR 0x000008
#define _PAGE_BAP_SW 0x000010
#define _PAGE_BAP_UW 0x000020
#define _PAGE_BAP_SX 0x000040
#define _PAGE_BAP_UX 0x000080
#define _PAGE_PSIZE_MSK 0x000f00
#define _PAGE_PSIZE_4K 0x000200
#define _PAGE_PSIZE_8K 0x000300
#define _PAGE_PSIZE_16K 0x000400
#define _PAGE_PSIZE_32K 0x000500
#define _PAGE_PSIZE_64K 0x000600
#define _PAGE_PSIZE_128K 0x000700
#define _PAGE_PSIZE_256K 0x000800
#define _PAGE_PSIZE_512K 0x000900
#define _PAGE_PSIZE_1M 0x000a00
#define _PAGE_PSIZE_2M 0x000b00
#define _PAGE_PSIZE_4M 0x000c00
#define _PAGE_PSIZE_8M 0x000d00
#define _PAGE_PSIZE_16M 0x000e00
#define _PAGE_PSIZE_32M 0x000f00
#define _PAGE_DIRTY 0x001000 /* C: page changed */
#define _PAGE_SW0 0x002000
#define _PAGE_U3 0x004000
#define _PAGE_U2 0x008000
#define _PAGE_U1 0x010000
#define _PAGE_U0 0x020000
#define _PAGE_ACCESSED 0x040000
#define _PAGE_ENDIAN 0x080000
#define _PAGE_GUARDED 0x100000
#define _PAGE_COHERENT 0x200000 /* M: enforce memory coherence */
#define _PAGE_NO_CACHE 0x400000 /* I: cache inhibit */
#define _PAGE_WRITETHRU 0x800000 /* W: cache write-through */
/* "Higher level" linux bit combinations */
#define _PAGE_EXEC _PAGE_BAP_UX /* .. and was cache cleaned */
#define _PAGE_RW (_PAGE_BAP_SW | _PAGE_BAP_UW) /* User write permission */
#define _PAGE_KERNEL_RW (_PAGE_BAP_SW | _PAGE_BAP_SR | _PAGE_DIRTY)
#define _PAGE_KERNEL_RO (_PAGE_BAP_SR)
#define _PAGE_KERNEL_RWX (_PAGE_BAP_SW | _PAGE_BAP_SR | _PAGE_DIRTY | _PAGE_BAP_SX)
#define _PAGE_KERNEL_ROX (_PAGE_BAP_SR | _PAGE_BAP_SX)
#define _PAGE_USER (_PAGE_BAP_UR | _PAGE_BAP_SR) /* Can be read */
#define _PAGE_PRIVILEGED (_PAGE_BAP_SR)
#define _PAGE_SPECIAL _PAGE_SW0
/* Base page size */
#ifdef CONFIG_PPC_64K_PAGES
#define _PAGE_PSIZE _PAGE_PSIZE_64K
#define PTE_RPN_SHIFT (28)
#else
#define _PAGE_PSIZE _PAGE_PSIZE_4K
#define PTE_RPN_SHIFT (24)
#endif
#define PTE_WIMGE_SHIFT (19)
#define PTE_BAP_SHIFT (2)
/* On 32-bit, we never clear the top part of the PTE */
#ifdef CONFIG_PPC32
#define _PTE_NONE_MASK 0xffffffff00000000ULL
#define _PMD_PRESENT 0
#define _PMD_PRESENT_MASK (PAGE_MASK)
#define _PMD_BAD (~PAGE_MASK)
#endif
#endif /* __KERNEL__ */
#endif /* _ASM_POWERPC_NOHASH_PTE_BOOK3E_H */
|
