pat.c File Reference

#include <linux/seq_file.h>
#include <linux/bootmem.h>
#include <linux/debugfs.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include <linux/fs.h>
#include <linux/rbtree.h>
#include <asm/cacheflush.h>
#include <asm/processor.h>
#include <asm/tlbflush.h>
#include <asm/x86_init.h>
#include <asm/pgtable.h>
#include <asm/fcntl.h>
#include <asm/e820.h>
#include <asm/mtrr.h>
#include <asm/page.h>
#include <asm/msr.h>
#include <asm/pat.h>
#include <asm/io.h>
#include "pat_internal.h"

Go to the source code of this file.

Data Structures
struct	pagerange_state

Macros
#define	PAT(x, y)   ((u64)PAT_ ## y << ((x)*8))

Enumerations
enum	{   PAT_UC = 0, PAT_WC = 1, PAT_WT = 4, PAT_WP = 5,   PAT_WB = 6, PAT_UC_MINUS = 7 }

Functions
	__setup ("debugpat", pat_debug_setup)
void	pat_init (void)
int	reserve_memtype (u64 start, u64 end, unsigned long req_type, unsigned long *new_type)
int	free_memtype (u64 start, u64 end)
int	io_reserve_memtype (resource_size_t start, resource_size_t end, unsigned long *type)
void	io_free_memtype (resource_size_t start, resource_size_t end)
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)
int	kernel_map_sync_memtype (u64 base, unsigned long size, unsigned long flags)
int	track_pfn_copy (struct vm_area_struct *vma)
int	track_pfn_remap (struct vm_area_struct *vma, pgprot_t *prot, unsigned long pfn, unsigned long addr, unsigned long size)
int	track_pfn_insert (struct vm_area_struct *vma, pgprot_t *prot, unsigned long pfn)
void	untrack_pfn (struct vm_area_struct *vma, unsigned long pfn, unsigned long size)
pgprot_t	pgprot_writecombine (pgprot_t prot)
	EXPORT_SYMBOL_GPL (pgprot_writecombine)

Variables
int	pat_debug_enable

Macro Definition Documentation

#define PAT	(		x,
			y
	)		((u64)PAT_ ## y << ((x)*8))

Definition at line 78 of file pat.c.

Enumeration Type Documentation

anonymous enum

Enumerator:

PAT_UC
PAT_WC
PAT_WT
PAT_WP
PAT_WB
PAT_UC_MINUS

Definition at line 69 of file pat.c.

Function Documentation

__setup	(	"debugpat"	,
		pat_debug_setup
	)

EXPORT_SYMBOL_GPL

(

pgprot_writecombine

)

int free_memtype	(	u64	start,
		u64	end
	)

Definition at line 350 of file pat.c.

void io_free_memtype	(	resource_size_t	start,
		resource_size_t	end
	)

io_free_memtype - Release a memory type mapping for a region of memory : start (physical address) of the region : end (physical address) of the region

Definition at line 479 of file pat.c.

int io_reserve_memtype	(	resource_size_t	start,
		resource_size_t	end,
		unsigned long *	type
	)

io_reserve_memtype - Request a memory type mapping for a region of memory : start (physical address) of the region : end (physical address) of the region : A pointer to memtype, with requested type. On success, requested or any other compatible type that was available for the region is returned

On success, returns 0 On failure, returns non-zero

Definition at line 444 of file pat.c.

int kernel_map_sync_memtype	(	u64	base,
		unsigned long	size,
		unsigned long	flags
	)

Definition at line 559 of file pat.c.

void pat_init

(

void

)

Definition at line 80 of file pat.c.

pgprot_t pgprot_writecombine

(

pgprot_t

prot

)

Definition at line 784 of file pat.c.

pgprot_t phys_mem_access_prot	(	struct file *	file,
		unsigned long	pfn,
		unsigned long	size,
		pgprot_t	vma_prot
	)

Definition at line 484 of file pat.c.

int phys_mem_access_prot_allowed	(	struct file *	file,
		unsigned long	pfn,
		unsigned long	size,
		pgprot_t *	vma_prot
	)

Definition at line 520 of file pat.c.

int reserve_memtype	(	u64	start,
		u64	end,
		unsigned long	req_type,
		unsigned long *	new_type
	)

Definition at line 271 of file pat.c.

int track_pfn_copy

(

struct vm_area_struct *

vma

)

Definition at line 673 of file pat.c.

int track_pfn_insert	(	struct vm_area_struct *	vma,
		pgprot_t *	prot,
		unsigned long	pfn
	)

Definition at line 740 of file pat.c.

int track_pfn_remap	(	struct vm_area_struct *	vma,
		pgprot_t *	prot,
		unsigned long	pfn,
		unsigned long	addr,
		unsigned long	size
	)

Definition at line 701 of file pat.c.

void untrack_pfn	(	struct vm_area_struct *	vma,
		unsigned long	pfn,
		unsigned long	size
	)

Definition at line 761 of file pat.c.

Variable Documentation

int pat_debug_enable

Definition at line 58 of file pat.c.