Commit | Line | Data |
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a37c8875 | 1 | #ifndef _ASM_POWERPC_MMAN_H |
2 | #define _ASM_POWERPC_MMAN_H | |
1da177e4 | 3 | |
63b852a6 | 4 | #include <asm-generic/mman-common.h> |
5f6164f3 | 5 | |
1da177e4 LT |
6 | /* |
7 | * This program is free software; you can redistribute it and/or | |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
aba46c50 DK |
13 | #define PROT_SAO 0x10 /* Strong Access Ordering */ |
14 | ||
1da177e4 LT |
15 | #define MAP_RENAME MAP_ANONYMOUS /* In SunOS terminology */ |
16 | #define MAP_NORESERVE 0x40 /* don't reserve swap pages */ | |
17 | #define MAP_LOCKED 0x80 | |
18 | ||
19 | #define MAP_GROWSDOWN 0x0100 /* stack-like segment */ | |
20 | #define MAP_DENYWRITE 0x0800 /* ETXTBSY */ | |
21 | #define MAP_EXECUTABLE 0x1000 /* mark it as an executable */ | |
22 | ||
1da177e4 LT |
23 | #define MCL_CURRENT 0x2000 /* lock all currently mapped pages */ |
24 | #define MCL_FUTURE 0x4000 /* lock all additions to address space */ | |
25 | ||
26 | #define MAP_POPULATE 0x8000 /* populate (prefault) pagetables */ | |
27 | #define MAP_NONBLOCK 0x10000 /* do not block on IO */ | |
90f72aa5 AB |
28 | #define MAP_STACK 0x20000 /* give out an address that is best suited for process/thread stacks */ |
29 | #define MAP_HUGETLB 0x40000 /* create a huge page mapping */ | |
1da177e4 | 30 | |
b3fcaaa8 | 31 | #ifdef __KERNEL__ |
ef3d3246 | 32 | #ifdef CONFIG_PPC64 |
b3fcaaa8 SR |
33 | |
34 | #include <asm/cputable.h> | |
35 | #include <linux/mm.h> | |
36 | ||
ef3d3246 DK |
37 | /* |
38 | * This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits() | |
39 | * here. How important is the optimization? | |
40 | */ | |
41 | static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot) | |
42 | { | |
43 | return (prot & PROT_SAO) ? VM_SAO : 0; | |
44 | } | |
45 | #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot) | |
46 | ||
47 | static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags) | |
48 | { | |
f5ea64dc | 49 | return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0); |
ef3d3246 DK |
50 | } |
51 | #define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags) | |
52 | ||
53 | static inline int arch_validate_prot(unsigned long prot) | |
54 | { | |
55 | if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO)) | |
56 | return 0; | |
57 | if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO)) | |
58 | return 0; | |
59 | return 1; | |
60 | } | |
61 | #define arch_validate_prot(prot) arch_validate_prot(prot) | |
62 | ||
63 | #endif /* CONFIG_PPC64 */ | |
b3fcaaa8 | 64 | #endif /* __KERNEL__ */ |
a37c8875 | 65 | #endif /* _ASM_POWERPC_MMAN_H */ |