1/*
2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public License
4 * as published by the Free Software Foundation; either version
5 * 2 of the License, or (at your option) any later version.
6 */
7#ifndef _ASM_POWERPC_MMAN_H
8#define _ASM_POWERPC_MMAN_H
9
10#include <uapi/asm/mman.h>
11
12#ifdef CONFIG_PPC64
13
14#include <asm/cputable.h>
15#include <linux/mm.h>
16
17/*
18 * This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits()
19 * here.  How important is the optimization?
20 */
21static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot)
22{
23	return (prot & PROT_SAO) ? VM_SAO : 0;
24}
25#define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot)
26
27static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
28{
29	return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
30}
31#define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags)
32
33static inline int arch_validate_prot(unsigned long prot)
34{
35	if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
36		return 0;
37	if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO))
38		return 0;
39	return 1;
40}
41#define arch_validate_prot(prot) arch_validate_prot(prot)
42
43#endif /* CONFIG_PPC64 */
44#endif	/* _ASM_POWERPC_MMAN_H */
45