[GitHub/LineageOS/android_kernel_samsung_universal7580.git] / arch / x86 / include / asm / pgtable_types.h

#ifndef _ASM_X86_PGTABLE_DEFS_H
#define _ASM_X86_PGTABLE_DEFS_H

#include <linux/const.h>
#include <asm/page_types.h>

#define FIRST_USER_ADDRESS	0

#define _PAGE_BIT_PRESENT	0	/* is present */
#define _PAGE_BIT_RW		1	/* writeable */
#define _PAGE_BIT_USER		2	/* userspace addressable */
#define _PAGE_BIT_PWT		3	/* page write through */
#define _PAGE_BIT_PCD		4	/* page cache disabled */
#define _PAGE_BIT_ACCESSED	5	/* was accessed (raised by CPU) */
#define _PAGE_BIT_DIRTY		6	/* was written to (raised by CPU) */
#define _PAGE_BIT_PSE		7	/* 4 MB (or 2MB) page */
#define _PAGE_BIT_PAT		7	/* on 4KB pages */
#define _PAGE_BIT_GLOBAL	8	/* Global TLB entry PPro+ */
#define _PAGE_BIT_UNUSED1	9	/* available for programmer */
#define _PAGE_BIT_IOMAP		10	/* flag used to indicate IO mapping */
#define _PAGE_BIT_HIDDEN	11	/* hidden by kmemcheck */
#define _PAGE_BIT_PAT_LARGE	12	/* On 2MB or 1GB pages */
#define _PAGE_BIT_SPECIAL	_PAGE_BIT_UNUSED1
#define _PAGE_BIT_CPA_TEST	_PAGE_BIT_UNUSED1
#define _PAGE_BIT_NX           63       /* No execute: only valid after cpuid check */

/* If _PAGE_BIT_PRESENT is clear, we use these: */
/* - if the user mapped it with PROT_NONE; pte_present gives true */
#define _PAGE_BIT_PROTNONE	_PAGE_BIT_GLOBAL
/* - set: nonlinear file mapping, saved PTE; unset:swap */
#define _PAGE_BIT_FILE		_PAGE_BIT_DIRTY

#define _PAGE_PRESENT	(_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
#define _PAGE_RW	(_AT(pteval_t, 1) << _PAGE_BIT_RW)
#define _PAGE_USER	(_AT(pteval_t, 1) << _PAGE_BIT_USER)
#define _PAGE_PWT	(_AT(pteval_t, 1) << _PAGE_BIT_PWT)
#define _PAGE_PCD	(_AT(pteval_t, 1) << _PAGE_BIT_PCD)
#define _PAGE_ACCESSED	(_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
#define _PAGE_DIRTY	(_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
#define _PAGE_PSE	(_AT(pteval_t, 1) << _PAGE_BIT_PSE)
#define _PAGE_GLOBAL	(_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
#define _PAGE_UNUSED1	(_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
#define _PAGE_IOMAP	(_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
#define _PAGE_PAT	(_AT(pteval_t, 1) << _PAGE_BIT_PAT)
#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
#define _PAGE_SPECIAL	(_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
#define _PAGE_CPA_TEST	(_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
#define __HAVE_ARCH_PTE_SPECIAL

#ifdef CONFIG_KMEMCHECK
#define _PAGE_HIDDEN	(_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)
#else
#define _PAGE_HIDDEN	(_AT(pteval_t, 0))
#endif

#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
#define _PAGE_NX	(_AT(pteval_t, 1) << _PAGE_BIT_NX)
#else
#define _PAGE_NX	(_AT(pteval_t, 0))
#endif

#define _PAGE_FILE	(_AT(pteval_t, 1) << _PAGE_BIT_FILE)
#define _PAGE_PROTNONE	(_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)

#define _PAGE_TABLE	(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER |	\
			 _PAGE_ACCESSED | _PAGE_DIRTY)
#define _KERNPG_TABLE	(_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED |	\
			 _PAGE_DIRTY)

/* Set of bits not changed in pte_modify */
#define _PAGE_CHG_MASK	(PTE_PFN_MASK | _PAGE_PCD | _PAGE_PWT |		\
			 _PAGE_SPECIAL | _PAGE_ACCESSED | _PAGE_DIRTY)

#define _PAGE_CACHE_MASK	(_PAGE_PCD | _PAGE_PWT)
#define _PAGE_CACHE_WB		(0)
#define _PAGE_CACHE_WC		(_PAGE_PWT)
#define _PAGE_CACHE_UC_MINUS	(_PAGE_PCD)
#define _PAGE_CACHE_UC		(_PAGE_PCD | _PAGE_PWT)

#define PAGE_NONE	__pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
#define PAGE_SHARED	__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
				 _PAGE_ACCESSED | _PAGE_NX)

#define PAGE_SHARED_EXEC	__pgprot(_PAGE_PRESENT | _PAGE_RW |	\
					 _PAGE_USER | _PAGE_ACCESSED)
#define PAGE_COPY_NOEXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER |	\
					 _PAGE_ACCESSED | _PAGE_NX)
#define PAGE_COPY_EXEC		__pgprot(_PAGE_PRESENT | _PAGE_USER |	\
					 _PAGE_ACCESSED)
#define PAGE_COPY		PAGE_COPY_NOEXEC
#define PAGE_READONLY		__pgprot(_PAGE_PRESENT | _PAGE_USER |	\
					 _PAGE_ACCESSED | _PAGE_NX)
#define PAGE_READONLY_EXEC	__pgprot(_PAGE_PRESENT | _PAGE_USER |	\
					 _PAGE_ACCESSED)

#define __PAGE_KERNEL_EXEC						\
	(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_GLOBAL)
#define __PAGE_KERNEL		(__PAGE_KERNEL_EXEC | _PAGE_NX)

#define __PAGE_KERNEL_RO		(__PAGE_KERNEL & ~_PAGE_RW)
#define __PAGE_KERNEL_RX		(__PAGE_KERNEL_EXEC & ~_PAGE_RW)
#define __PAGE_KERNEL_EXEC_NOCACHE	(__PAGE_KERNEL_EXEC | _PAGE_PCD | _PAGE_PWT)
#define __PAGE_KERNEL_WC		(__PAGE_KERNEL | _PAGE_CACHE_WC)
#define __PAGE_KERNEL_NOCACHE		(__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
#define __PAGE_KERNEL_UC_MINUS		(__PAGE_KERNEL | _PAGE_PCD)
#define __PAGE_KERNEL_VSYSCALL		(__PAGE_KERNEL_RX | _PAGE_USER)
#define __PAGE_KERNEL_VSYSCALL_NOCACHE	(__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
#define __PAGE_KERNEL_LARGE		(__PAGE_KERNEL | _PAGE_PSE)
#define __PAGE_KERNEL_LARGE_NOCACHE	(__PAGE_KERNEL | _PAGE_CACHE_UC | _PAGE_PSE)
#define __PAGE_KERNEL_LARGE_EXEC	(__PAGE_KERNEL_EXEC | _PAGE_PSE)

#define __PAGE_KERNEL_IO		(__PAGE_KERNEL | _PAGE_IOMAP)
#define __PAGE_KERNEL_IO_NOCACHE	(__PAGE_KERNEL_NOCACHE | _PAGE_IOMAP)
#define __PAGE_KERNEL_IO_UC_MINUS	(__PAGE_KERNEL_UC_MINUS | _PAGE_IOMAP)
#define __PAGE_KERNEL_IO_WC		(__PAGE_KERNEL_WC | _PAGE_IOMAP)

#define PAGE_KERNEL			__pgprot(__PAGE_KERNEL)
#define PAGE_KERNEL_RO			__pgprot(__PAGE_KERNEL_RO)
#define PAGE_KERNEL_EXEC		__pgprot(__PAGE_KERNEL_EXEC)
#define PAGE_KERNEL_RX			__pgprot(__PAGE_KERNEL_RX)
#define PAGE_KERNEL_WC			__pgprot(__PAGE_KERNEL_WC)
#define PAGE_KERNEL_NOCACHE		__pgprot(__PAGE_KERNEL_NOCACHE)
#define PAGE_KERNEL_UC_MINUS		__pgprot(__PAGE_KERNEL_UC_MINUS)
#define PAGE_KERNEL_EXEC_NOCACHE	__pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
#define PAGE_KERNEL_LARGE		__pgprot(__PAGE_KERNEL_LARGE)
#define PAGE_KERNEL_LARGE_NOCACHE	__pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
#define PAGE_KERNEL_LARGE_EXEC		__pgprot(__PAGE_KERNEL_LARGE_EXEC)
#define PAGE_KERNEL_VSYSCALL		__pgprot(__PAGE_KERNEL_VSYSCALL)
#define PAGE_KERNEL_VSYSCALL_NOCACHE	__pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)

#define PAGE_KERNEL_IO			__pgprot(__PAGE_KERNEL_IO)
#define PAGE_KERNEL_IO_NOCACHE		__pgprot(__PAGE_KERNEL_IO_NOCACHE)
#define PAGE_KERNEL_IO_UC_MINUS		__pgprot(__PAGE_KERNEL_IO_UC_MINUS)
#define PAGE_KERNEL_IO_WC		__pgprot(__PAGE_KERNEL_IO_WC)

/*         xwr */
#define __P000	PAGE_NONE
#define __P001	PAGE_READONLY
#define __P010	PAGE_COPY
#define __P011	PAGE_COPY
#define __P100	PAGE_READONLY_EXEC
#define __P101	PAGE_READONLY_EXEC
#define __P110	PAGE_COPY_EXEC
#define __P111	PAGE_COPY_EXEC

#define __S000	PAGE_NONE
#define __S001	PAGE_READONLY
#define __S010	PAGE_SHARED
#define __S011	PAGE_SHARED
#define __S100	PAGE_READONLY_EXEC
#define __S101	PAGE_READONLY_EXEC
#define __S110	PAGE_SHARED_EXEC
#define __S111	PAGE_SHARED_EXEC

/*
 * early identity mapping  pte attrib macros.
 */
#ifdef CONFIG_X86_64
#define __PAGE_KERNEL_IDENT_LARGE_EXEC	__PAGE_KERNEL_LARGE_EXEC
#else
/*
 * For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
 * bits are combined, this will alow user to access the high address mapped
 * VDSO in the presence of CONFIG_COMPAT_VDSO
 */
#define PTE_IDENT_ATTR	 0x003		/* PRESENT+RW */
#define PDE_IDENT_ATTR	 0x067		/* PRESENT+RW+USER+DIRTY+ACCESSED */
#define PGD_IDENT_ATTR	 0x001		/* PRESENT (no other attributes) */
#endif

#ifdef CONFIG_X86_32
# include "pgtable_32_types.h"
#else
# include "pgtable_64_types.h"
#endif

#ifndef __ASSEMBLY__

#include <linux/types.h>

/* PTE_PFN_MASK extracts the PFN from a (pte|pmd|pud|pgd)val_t */
#define PTE_PFN_MASK		((pteval_t)PHYSICAL_PAGE_MASK)

/* PTE_FLAGS_MASK extracts the flags from a (pte|pmd|pud|pgd)val_t */
#define PTE_FLAGS_MASK		(~PTE_PFN_MASK)

typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;

typedef struct { pgdval_t pgd; } pgd_t;

static inline pgd_t native_make_pgd(pgdval_t val)
{
	return (pgd_t) { val };
}

static inline pgdval_t native_pgd_val(pgd_t pgd)
{
	return pgd.pgd;
}

static inline pgdval_t pgd_flags(pgd_t pgd)
{
	return native_pgd_val(pgd) & PTE_FLAGS_MASK;
}

#if PAGETABLE_LEVELS > 3
typedef struct { pudval_t pud; } pud_t;

static inline pud_t native_make_pud(pmdval_t val)
{
	return (pud_t) { val };
}

static inline pudval_t native_pud_val(pud_t pud)
{
	return pud.pud;
}
#else
#include <asm-generic/pgtable-nopud.h>

static inline pudval_t native_pud_val(pud_t pud)
{
	return native_pgd_val(pud.pgd);
}
#endif

#if PAGETABLE_LEVELS > 2
typedef struct { pmdval_t pmd; } pmd_t;

static inline pmd_t native_make_pmd(pmdval_t val)
{
	return (pmd_t) { val };
}

static inline pmdval_t native_pmd_val(pmd_t pmd)
{
	return pmd.pmd;
}
#else
#include <asm-generic/pgtable-nopmd.h>

static inline pmdval_t native_pmd_val(pmd_t pmd)
{
	return native_pgd_val(pmd.pud.pgd);
}
#endif

static inline pudval_t pud_flags(pud_t pud)
{
	return native_pud_val(pud) & PTE_FLAGS_MASK;
}

static inline pmdval_t pmd_flags(pmd_t pmd)
{
	return native_pmd_val(pmd) & PTE_FLAGS_MASK;
}

static inline pte_t native_make_pte(pteval_t val)
{
	return (pte_t) { .pte = val };
}

static inline pteval_t native_pte_val(pte_t pte)
{
	return pte.pte;
}

static inline pteval_t pte_flags(pte_t pte)
{
	return native_pte_val(pte) & PTE_FLAGS_MASK;
}

#define pgprot_val(x)	((x).pgprot)
#define __pgprot(x)	((pgprot_t) { (x) } )


typedef struct page *pgtable_t;

extern pteval_t __supported_pte_mask;
extern void set_nx(void);
extern int nx_enabled;

#define pgprot_writecombine	pgprot_writecombine
extern pgprot_t pgprot_writecombine(pgprot_t prot);

/* Indicate that x86 has its own track and untrack pfn vma functions */
#define __HAVE_PFNMAP_TRACKING

#define __HAVE_PHYS_MEM_ACCESS_PROT
struct file;
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
                              unsigned long size, pgprot_t vma_prot);
int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
                              unsigned long size, pgprot_t *vma_prot);

/* Install a pte for a particular vaddr in kernel space. */
void set_pte_vaddr(unsigned long vaddr, pte_t pte);

#ifdef CONFIG_X86_32
extern void native_pagetable_setup_start(pgd_t *base);
extern void native_pagetable_setup_done(pgd_t *base);
#else
#define native_pagetable_setup_start x86_init_pgd_noop
#define native_pagetable_setup_done  x86_init_pgd_noop
#endif

struct seq_file;
extern void arch_report_meminfo(struct seq_file *m);

enum {
	PG_LEVEL_NONE,
	PG_LEVEL_4K,
	PG_LEVEL_2M,
	PG_LEVEL_1G,
	PG_LEVEL_NUM
};

#ifdef CONFIG_PROC_FS
extern void update_page_count(int level, unsigned long pages);
#else
static inline void update_page_count(int level, unsigned long pages) { }
#endif

/*
 * Helper function that returns the kernel pagetable entry controlling
 * the virtual address 'address'. NULL means no pagetable entry present.
 * NOTE: the return type is pte_t but if the pmd is PSE then we return it
 * as a pte too.
 */
extern pte_t *lookup_address(unsigned long address, unsigned int *level);

#endif	/* !__ASSEMBLY__ */

#endif /* _ASM_X86_PGTABLE_DEFS_H */
Commit	Line	Data
8d19c99f JF	1	#ifndef _ASM_X86_PGTABLE_DEFS_H
	2	#define _ASM_X86_PGTABLE_DEFS_H
	3
	4	#include <linux/const.h>
e43623b4	5	#include <asm/page_types.h>
8d19c99f JF	6
	7	#define FIRST_USER_ADDRESS 0
	8
	9	#define _PAGE_BIT_PRESENT 0 /* is present */
	10	#define _PAGE_BIT_RW 1 /* writeable */
	11	#define _PAGE_BIT_USER 2 /* userspace addressable */
	12	#define _PAGE_BIT_PWT 3 /* page write through */
	13	#define _PAGE_BIT_PCD 4 /* page cache disabled */
	14	#define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
	15	#define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
	16	#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
	17	#define _PAGE_BIT_PAT 7 /* on 4KB pages */
	18	#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
	19	#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
	20	#define _PAGE_BIT_IOMAP 10 /* flag used to indicate IO mapping */
dfec072e	21	#define _PAGE_BIT_HIDDEN 11 /* hidden by kmemcheck */
8d19c99f JF	22	#define _PAGE_BIT_PAT_LARGE 12 /* On 2MB or 1GB pages */
	23	#define _PAGE_BIT_SPECIAL _PAGE_BIT_UNUSED1
	24	#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
	25	#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
	26
	27	/* If _PAGE_BIT_PRESENT is clear, we use these: */
	28	/* - if the user mapped it with PROT_NONE; pte_present gives true */
	29	#define _PAGE_BIT_PROTNONE _PAGE_BIT_GLOBAL
	30	/* - set: nonlinear file mapping, saved PTE; unset:swap */
	31	#define _PAGE_BIT_FILE _PAGE_BIT_DIRTY
	32
	33	#define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
	34	#define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)
	35	#define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER)
	36	#define _PAGE_PWT (_AT(pteval_t, 1) << _PAGE_BIT_PWT)
	37	#define _PAGE_PCD (_AT(pteval_t, 1) << _PAGE_BIT_PCD)
	38	#define _PAGE_ACCESSED (_AT(pteval_t, 1) << _PAGE_BIT_ACCESSED)
	39	#define _PAGE_DIRTY (_AT(pteval_t, 1) << _PAGE_BIT_DIRTY)
	40	#define _PAGE_PSE (_AT(pteval_t, 1) << _PAGE_BIT_PSE)
	41	#define _PAGE_GLOBAL (_AT(pteval_t, 1) << _PAGE_BIT_GLOBAL)
	42	#define _PAGE_UNUSED1 (_AT(pteval_t, 1) << _PAGE_BIT_UNUSED1)
	43	#define _PAGE_IOMAP (_AT(pteval_t, 1) << _PAGE_BIT_IOMAP)
8d19c99f JF	44	#define _PAGE_PAT (_AT(pteval_t, 1) << _PAGE_BIT_PAT)
	45	#define _PAGE_PAT_LARGE (_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
	46	#define _PAGE_SPECIAL (_AT(pteval_t, 1) << _PAGE_BIT_SPECIAL)
	47	#define _PAGE_CPA_TEST (_AT(pteval_t, 1) << _PAGE_BIT_CPA_TEST)
	48	#define __HAVE_ARCH_PTE_SPECIAL
	49
9d31c506 JF	50	#ifdef CONFIG_KMEMCHECK
	51	#define _PAGE_HIDDEN (_AT(pteval_t, 1) << _PAGE_BIT_HIDDEN)
	52	#else
	53	#define _PAGE_HIDDEN (_AT(pteval_t, 0))
	54	#endif
	55
8d19c99f JF	56	#if defined(CONFIG_X86_64) \|\| defined(CONFIG_X86_PAE)
	57	#define _PAGE_NX (_AT(pteval_t, 1) << _PAGE_BIT_NX)
	58	#else
	59	#define _PAGE_NX (_AT(pteval_t, 0))
	60	#endif
	61
	62	#define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
	63	#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
	64
	65	#define _PAGE_TABLE (_PAGE_PRESENT \| _PAGE_RW \| _PAGE_USER \| \
	66	_PAGE_ACCESSED \| _PAGE_DIRTY)
	67	#define _KERNPG_TABLE (_PAGE_PRESENT \| _PAGE_RW \| _PAGE_ACCESSED \| \
	68	_PAGE_DIRTY)
	69
	70	/* Set of bits not changed in pte_modify */
	71	#define _PAGE_CHG_MASK (PTE_PFN_MASK \| _PAGE_PCD \| _PAGE_PWT \| \
	72	_PAGE_SPECIAL \| _PAGE_ACCESSED \| _PAGE_DIRTY)
	73
	74	#define _PAGE_CACHE_MASK (_PAGE_PCD \| _PAGE_PWT)
	75	#define _PAGE_CACHE_WB (0)
	76	#define _PAGE_CACHE_WC (_PAGE_PWT)
	77	#define _PAGE_CACHE_UC_MINUS (_PAGE_PCD)
	78	#define _PAGE_CACHE_UC (_PAGE_PCD \| _PAGE_PWT)
	79
	80	#define PAGE_NONE __pgprot(_PAGE_PROTNONE \| _PAGE_ACCESSED)
	81	#define PAGE_SHARED __pgprot(_PAGE_PRESENT \| _PAGE_RW \| _PAGE_USER \| \
	82	_PAGE_ACCESSED \| _PAGE_NX)
	83
	84	#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT \| _PAGE_RW \| \
	85	_PAGE_USER \| _PAGE_ACCESSED)
	86	#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	87	_PAGE_ACCESSED \| _PAGE_NX)
	88	#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	89	_PAGE_ACCESSED)
	90	#define PAGE_COPY PAGE_COPY_NOEXEC
	91	#define PAGE_READONLY __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	92	_PAGE_ACCESSED \| _PAGE_NX)
	93	#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT \| _PAGE_USER \| \
	94	_PAGE_ACCESSED)
	95
	96	#define __PAGE_KERNEL_EXEC \
	97	(_PAGE_PRESENT \| _PAGE_RW \| _PAGE_DIRTY \| _PAGE_ACCESSED \| _PAGE_GLOBAL)
	98	#define __PAGE_KERNEL (__PAGE_KERNEL_EXEC \| _PAGE_NX)
	99
	100	#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
	101	#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
	102	#define __PAGE_KERNEL_EXEC_NOCACHE (__PAGE_KERNEL_EXEC \| _PAGE_PCD \| _PAGE_PWT)
	103	#define __PAGE_KERNEL_WC (__PAGE_KERNEL \| _PAGE_CACHE_WC)
	104	#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL \| _PAGE_PCD \| _PAGE_PWT)
	105	#define __PAGE_KERNEL_UC_MINUS (__PAGE_KERNEL \| _PAGE_PCD)
	106	#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX \| _PAGE_USER)
	107	#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL \| _PAGE_PCD \| _PAGE_PWT)
	108	#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL \| _PAGE_PSE)
	109	#define __PAGE_KERNEL_LARGE_NOCACHE (__PAGE_KERNEL \| _PAGE_CACHE_UC \| _PAGE_PSE)
	110	#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC \| _PAGE_PSE)
	111
	112	#define __PAGE_KERNEL_IO (__PAGE_KERNEL \| _PAGE_IOMAP)
	113	#define __PAGE_KERNEL_IO_NOCACHE (__PAGE_KERNEL_NOCACHE \| _PAGE_IOMAP)
	114	#define __PAGE_KERNEL_IO_UC_MINUS (__PAGE_KERNEL_UC_MINUS \| _PAGE_IOMAP)
	115	#define __PAGE_KERNEL_IO_WC (__PAGE_KERNEL_WC \| _PAGE_IOMAP)
	116
	117	#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
	118	#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
	119	#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
120	#define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
121	#define PAGE_KERNEL_WC __pgprot(__PAGE_KERNEL_WC)
122	#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
123	#define PAGE_KERNEL_UC_MINUS __pgprot(__PAGE_KERNEL_UC_MINUS)
124	#define PAGE_KERNEL_EXEC_NOCACHE __pgprot(__PAGE_KERNEL_EXEC_NOCACHE)
125	#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
126	#define PAGE_KERNEL_LARGE_NOCACHE __pgprot(__PAGE_KERNEL_LARGE_NOCACHE)
127	#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
128	#define PAGE_KERNEL_VSYSCALL __pgprot(__PAGE_KERNEL_VSYSCALL)
129	#define PAGE_KERNEL_VSYSCALL_NOCACHE __pgprot(__PAGE_KERNEL_VSYSCALL_NOCACHE)
130
131	#define PAGE_KERNEL_IO __pgprot(__PAGE_KERNEL_IO)
132	#define PAGE_KERNEL_IO_NOCACHE __pgprot(__PAGE_KERNEL_IO_NOCACHE)
133	#define PAGE_KERNEL_IO_UC_MINUS __pgprot(__PAGE_KERNEL_IO_UC_MINUS)
134	#define PAGE_KERNEL_IO_WC __pgprot(__PAGE_KERNEL_IO_WC)
135
136	/* xwr */
137	#define __P000 PAGE_NONE
138	#define __P001 PAGE_READONLY
139	#define __P010 PAGE_COPY
140	#define __P011 PAGE_COPY
141	#define __P100 PAGE_READONLY_EXEC
142	#define __P101 PAGE_READONLY_EXEC
143	#define __P110 PAGE_COPY_EXEC
144	#define __P111 PAGE_COPY_EXEC
145
146	#define __S000 PAGE_NONE
147	#define __S001 PAGE_READONLY
148	#define __S010 PAGE_SHARED
149	#define __S011 PAGE_SHARED
150	#define __S100 PAGE_READONLY_EXEC
151	#define __S101 PAGE_READONLY_EXEC
152	#define __S110 PAGE_SHARED_EXEC
153	#define __S111 PAGE_SHARED_EXEC
154
155	/*
156	* early identity mapping pte attrib macros.
157	*/
158	#ifdef CONFIG_X86_64
159	#define __PAGE_KERNEL_IDENT_LARGE_EXEC __PAGE_KERNEL_LARGE_EXEC
160	#else
161	/*
162	* For PDE_IDENT_ATTR include USER bit. As the PDE and PTE protection
163	* bits are combined, this will alow user to access the high address mapped
164	* VDSO in the presence of CONFIG_COMPAT_VDSO
165	*/
166	#define PTE_IDENT_ATTR 0x003 /* PRESENT+RW */
167	#define PDE_IDENT_ATTR 0x067 /* PRESENT+RW+USER+DIRTY+ACCESSED */
168	#define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
169	#endif
170
54321d94 JF	171	#ifdef CONFIG_X86_32
	172	# include "pgtable_32_types.h"
	173	#else
	174	# include "pgtable_64_types.h"
	175	#endif
	176
8d19c99f JF	177	#ifndef __ASSEMBLY__
8d19c99f JF	178
54321d94 JF	179	#include <linux/types.h>
54321d94 JF	180
9b3651cb JF	181	/* PTE_PFN_MASK extracts the PFN from a (pte\|pmd\|pud\|pgd)val_t */
	182	#define PTE_PFN_MASK ((pteval_t)PHYSICAL_PAGE_MASK)
	183
	184	/* PTE_FLAGS_MASK extracts the flags from a (pte\|pmd\|pud\|pgd)val_t */
	185	#define PTE_FLAGS_MASK (~PTE_PFN_MASK)
	186
54321d94 JF	187	typedef struct pgprot { pgprotval_t pgprot; } pgprot_t;
	188
	189	typedef struct { pgdval_t pgd; } pgd_t;
	190
	191	static inline pgd_t native_make_pgd(pgdval_t val)
	192	{
	193	return (pgd_t) { val };
	194	}
	195
	196	static inline pgdval_t native_pgd_val(pgd_t pgd)
	197	{
	198	return pgd.pgd;
	199	}
	200
	201	static inline pgdval_t pgd_flags(pgd_t pgd)
	202	{
	203	return native_pgd_val(pgd) & PTE_FLAGS_MASK;
	204	}
	205
	206	#if PAGETABLE_LEVELS > 3
	207	typedef struct { pudval_t pud; } pud_t;
	208
	209	static inline pud_t native_make_pud(pmdval_t val)
	210	{
	211	return (pud_t) { val };
	212	}
	213
	214	static inline pudval_t native_pud_val(pud_t pud)
	215	{
	216	return pud.pud;
	217	}
	218	#else
	219	#include <asm-generic/pgtable-nopud.h>
	220
	221	static inline pudval_t native_pud_val(pud_t pud)
	222	{
	223	return native_pgd_val(pud.pgd);
	224	}
	225	#endif
	226
	227	#if PAGETABLE_LEVELS > 2
	228	typedef struct { pmdval_t pmd; } pmd_t;
	229
	230	static inline pmd_t native_make_pmd(pmdval_t val)
	231	{
	232	return (pmd_t) { val };
	233	}
	234
	235	static inline pmdval_t native_pmd_val(pmd_t pmd)
	236	{
	237	return pmd.pmd;
	238	}
	239	#else
	240	#include <asm-generic/pgtable-nopmd.h>
	241
	242	static inline pmdval_t native_pmd_val(pmd_t pmd)
	243	{
	244	return native_pgd_val(pmd.pud.pgd);
	245	}
	246	#endif
	247
	248	static inline pudval_t pud_flags(pud_t pud)
	249	{
	250	return native_pud_val(pud) & PTE_FLAGS_MASK;
251	}
252
253	static inline pmdval_t pmd_flags(pmd_t pmd)
254	{
255	return native_pmd_val(pmd) & PTE_FLAGS_MASK;
256	}
257
258	static inline pte_t native_make_pte(pteval_t val)
259	{
260	return (pte_t) { .pte = val };
261	}
262
263	static inline pteval_t native_pte_val(pte_t pte)
264	{
265	return pte.pte;
266	}
267
268	static inline pteval_t pte_flags(pte_t pte)
269	{
270	return native_pte_val(pte) & PTE_FLAGS_MASK;
271	}
272
273	#define pgprot_val(x) ((x).pgprot)
274	#define __pgprot(x) ((pgprot_t) { (x) } )
275
276
277	typedef struct page *pgtable_t;
278
8d19c99f	279	extern pteval_t __supported_pte_mask;
c44c9ec0	280	extern void set_nx(void);
54321d94	281	extern int nx_enabled;
8d19c99f JF	282
	283	#define pgprot_writecombine pgprot_writecombine
	284	extern pgprot_t pgprot_writecombine(pgprot_t prot);
	285
	286	/* Indicate that x86 has its own track and untrack pfn vma functions */
	287	#define __HAVE_PFNMAP_TRACKING
	288
	289	#define __HAVE_PHYS_MEM_ACCESS_PROT
	290	struct file;
	291	pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
	292	unsigned long size, pgprot_t vma_prot);
	293	int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
	294	unsigned long size, pgprot_t *vma_prot);
	295
	296	/* Install a pte for a particular vaddr in kernel space. */
	297	void set_pte_vaddr(unsigned long vaddr, pte_t pte);
	298
	299	#ifdef CONFIG_X86_32
	300	extern void native_pagetable_setup_start(pgd_t *base);
	301	extern void native_pagetable_setup_done(pgd_t *base);
	302	#else
030cb6c0 TG	303	#define native_pagetable_setup_start x86_init_pgd_noop
030cb6c0 TG	304	#define native_pagetable_setup_done x86_init_pgd_noop
8d19c99f JF	305	#endif
	306
	307	struct seq_file;
	308	extern void arch_report_meminfo(struct seq_file *m);
	309
	310	enum {
	311	PG_LEVEL_NONE,
	312	PG_LEVEL_4K,
	313	PG_LEVEL_2M,
	314	PG_LEVEL_1G,
	315	PG_LEVEL_NUM
	316	};
	317
	318	#ifdef CONFIG_PROC_FS
	319	extern void update_page_count(int level, unsigned long pages);
	320	#else
	321	static inline void update_page_count(int level, unsigned long pages) { }
	322	#endif
	323
	324	/*
	325	* Helper function that returns the kernel pagetable entry controlling
	326	* the virtual address 'address'. NULL means no pagetable entry present.
	327	* NOTE: the return type is pte_t but if the pmd is PSE then we return it
	328	* as a pte too.
	329	*/
	330	extern pte_t lookup_address(unsigned long address, unsigned int level);
	331
	332	#endif /* !__ASSEMBLY__ */
	333
	334	#endif /* _ASM_X86_PGTABLE_DEFS_H */