1 #ifndef _ASM_POWERPC_MMAN_H 2 #define _ASM_POWERPC_MMAN_H 3 4 #include <asm-generic/mman-common.h> 5 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 13 #define PROT_SAO 0x10 /* Strong Access Ordering */ 14 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 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 */ 28 29 #ifdef __KERNEL__ 30 #ifdef CONFIG_PPC64 31 32 #include <asm/cputable.h> 33 #include <linux/mm.h> 34 35 /* 36 * This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits() 37 * here. How important is the optimization? 38 */ 39 static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot) 40 { 41 return (prot & PROT_SAO) ? VM_SAO : 0; 42 } 43 #define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot) 44 45 static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags) 46 { 47 return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0); 48 } 49 #define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags) 50 51 static inline int arch_validate_prot(unsigned long prot) 52 { 53 if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO)) 54 return 0; 55 if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO)) 56 return 0; 57 return 1; 58 } 59 #define arch_validate_prot(prot) arch_validate_prot(prot) 60 61 #endif /* CONFIG_PPC64 */ 62 #endif /* __KERNEL__ */ 63 #endif /* _ASM_POWERPC_MMAN_H */ 64