[linux-2.6-block.git] / arch / powerpc / include / asm / mman.h

#ifndef _ASM_POWERPC_MMAN_H
#define _ASM_POWERPC_MMAN_H

#include <asm-generic/mman-common.h>

/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version
 * 2 of the License, or (at your option) any later version.
 */

#define PROT_SAO	0x10		/* Strong Access Ordering */

#define MAP_RENAME      MAP_ANONYMOUS   /* In SunOS terminology */
#define MAP_NORESERVE   0x40            /* don't reserve swap pages */
#define MAP_LOCKED	0x80

#define MAP_GROWSDOWN	0x0100		/* stack-like segment */
#define MAP_DENYWRITE	0x0800		/* ETXTBSY */
#define MAP_EXECUTABLE	0x1000		/* mark it as an executable */

#define MCL_CURRENT     0x2000          /* lock all currently mapped pages */
#define MCL_FUTURE      0x4000          /* lock all additions to address space */

#define MAP_POPULATE	0x8000		/* populate (prefault) pagetables */
#define MAP_NONBLOCK	0x10000		/* do not block on IO */
#define MAP_STACK	0x20000		/* give out an address that is best suited for process/thread stacks */
#define MAP_HUGETLB	0x40000		/* create a huge page mapping */

#ifdef __KERNEL__
#ifdef CONFIG_PPC64

#include <asm/cputable.h>
#include <linux/mm.h>

/*
 * This file is included by linux/mman.h, so we can't use cacl_vm_prot_bits()
 * here.  How important is the optimization?
 */
static inline unsigned long arch_calc_vm_prot_bits(unsigned long prot)
{
	return (prot & PROT_SAO) ? VM_SAO : 0;
}
#define arch_calc_vm_prot_bits(prot) arch_calc_vm_prot_bits(prot)

static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
{
	return (vm_flags & VM_SAO) ? __pgprot(_PAGE_SAO) : __pgprot(0);
}
#define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags)

static inline int arch_validate_prot(unsigned long prot)
{
	if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
		return 0;
	if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO))
		return 0;
	return 1;
}
#define arch_validate_prot(prot) arch_validate_prot(prot)

#endif /* CONFIG_PPC64 */
#endif /* __KERNEL__ */
#endif	/* _ASM_POWERPC_MMAN_H */
Commit	Line	Data
a37c8875	1	#ifndef _ASM_POWERPC_MMAN_H
a37c8875	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 */
aba46c50 DK	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 */
90f72aa5 AB	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 */