#include <linux/io.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/slab.h>
#include <linux/pm_runtime.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/mm.h>
#include <linux/iommu.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/memblock.h>
#include <linux/export.h>
#include <asm/cacheflush.h>
#include <asm/pgtable.h>
#include <mach/sysmmu.h>

Data Structures
struct	exynos_iommu_domain

struct	sysmmu_drvdata

Macros
#define	SECT_ORDER 20

#define	LPAGE_ORDER 16

#define	SPAGE_ORDER 12

#define	SECT_SIZE (1 << SECT_ORDER)

#define	LPAGE_SIZE (1 << LPAGE_ORDER)

#define	SPAGE_SIZE (1 << SPAGE_ORDER)

#define	SECT_MASK (~(SECT_SIZE - 1))

#define	LPAGE_MASK (~(LPAGE_SIZE - 1))

#define	SPAGE_MASK (~(SPAGE_SIZE - 1))

#define	lv1ent_fault(sent) ((((sent) & 3) == 0) \|\| (((sent) & 3) == 3))

#define	lv1ent_page(sent) ((*(sent) & 3) == 1)

#define	lv1ent_section(sent) ((*(sent) & 3) == 2)

#define	lv2ent_fault(pent) ((*(pent) & 3) == 0)

#define	lv2ent_small(pent) ((*(pent) & 2) == 2)

#define	lv2ent_large(pent) ((*(pent) & 3) == 1)

#define	section_phys(sent) (*(sent) & SECT_MASK)

#define	section_offs(iova) ((iova) & 0xFFFFF)

#define	lpage_phys(pent) (*(pent) & LPAGE_MASK)

#define	lpage_offs(iova) ((iova) & 0xFFFF)

#define	spage_phys(pent) (*(pent) & SPAGE_MASK)

#define	spage_offs(iova) ((iova) & 0xFFF)

#define	lv1ent_offset(iova) ((iova) >> SECT_ORDER)

#define	lv2ent_offset(iova) (((iova) & 0xFF000) >> SPAGE_ORDER)

#define	NUM_LV1ENTRIES 4096

#define	NUM_LV2ENTRIES 256

#define	LV2TABLE_SIZE (NUM_LV2ENTRIES * sizeof(long))

#define	SPAGES_PER_LPAGE (LPAGE_SIZE / SPAGE_SIZE)

#define	lv2table_base(sent) (*(sent) & 0xFFFFFC00)

#define	mk_lv1ent_sect(pa) ((pa) \| 2)

#define	mk_lv1ent_page(pa) ((pa) \| 1)

#define	mk_lv2ent_lpage(pa) ((pa) \| 1)

#define	mk_lv2ent_spage(pa) ((pa) \| 2)

#define	CTRL_ENABLE 0x5

#define	CTRL_BLOCK 0x7

#define	CTRL_DISABLE 0x0

#define	REG_MMU_CTRL 0x000

#define	REG_MMU_CFG 0x004

#define	REG_MMU_STATUS 0x008

#define	REG_MMU_FLUSH 0x00C

#define	REG_MMU_FLUSH_ENTRY 0x010

#define	REG_PT_BASE_ADDR 0x014

#define	REG_INT_STATUS 0x018

#define	REG_INT_CLEAR 0x01C

#define	REG_PAGE_FAULT_ADDR 0x024

#define	REG_AW_FAULT_ADDR 0x028

#define	REG_AR_FAULT_ADDR 0x02C

#define	REG_DEFAULT_SLAVE_ADDR 0x030

#define	REG_MMU_VERSION 0x034

#define	REG_PB0_SADDR 0x04C

#define	REG_PB0_EADDR 0x050

#define	REG_PB1_SADDR 0x054

#define	REG_PB1_EADDR 0x058

Typedefs
typedef int(*	sysmmu_fault_handler_t )(enum exynos_sysmmu_inttype itype, unsigned long pgtable_base, unsigned long fault_addr)

Enumerations
enum	exynos_sysmmu_inttype { SYSMMU_PAGEFAULT, SYSMMU_AR_MULTIHIT, SYSMMU_AW_MULTIHIT, SYSMMU_BUSERROR, SYSMMU_AR_SECURITY, SYSMMU_AR_ACCESS, SYSMMU_AW_SECURITY, SYSMMU_AW_PROTECTION, SYSMMU_FAULT_UNKNOWN, SYSMMU_FAULTS_NUM }

Functions
void	exynos_sysmmu_set_prefbuf (struct device *dev, unsigned long base0, unsigned long size0, unsigned long base1, unsigned long size1)

void	exynos_sysmmu_set_fault_handler (struct device *dev, sysmmu_fault_handler_t handler)

int	exynos_sysmmu_enable (struct device *dev, unsigned long pgtable)

bool	exynos_sysmmu_disable (struct device *dev)

void	exynos_sysmmu_tlb_invalidate (struct device *dev)

	subsys_initcall (exynos_iommu_init)

Macro Definition Documentation

#define CTRL_BLOCK 0x7

Definition at line 80 of file exynos-iommu.c.

#define CTRL_DISABLE 0x0

Definition at line 81 of file exynos-iommu.c.

#define CTRL_ENABLE 0x5

Definition at line 79 of file exynos-iommu.c.

#define LPAGE_MASK (~(LPAGE_SIZE - 1))

Definition at line 44 of file exynos-iommu.c.

#define lpage_offs ( iova ) ((iova) & 0xFFFF)

Definition at line 58 of file exynos-iommu.c.

#define LPAGE_ORDER 16

Definition at line 36 of file exynos-iommu.c.

#define lpage_phys ( pent ) (*(pent) & LPAGE_MASK)

Definition at line 57 of file exynos-iommu.c.

#define LPAGE_SIZE (1 << LPAGE_ORDER)

Definition at line 40 of file exynos-iommu.c.

#define lv1ent_fault ( sent ) (((*(sent) & 3) == 0) || ((*(sent) & 3) == 3))

Definition at line 47 of file exynos-iommu.c.

#define lv1ent_offset ( iova ) ((iova) >> SECT_ORDER)

Definition at line 62 of file exynos-iommu.c.

#define lv1ent_page ( sent ) ((*(sent) & 3) == 1)

Definition at line 48 of file exynos-iommu.c.

#define lv1ent_section ( sent ) ((*(sent) & 3) == 2)

Definition at line 49 of file exynos-iommu.c.

#define lv2ent_fault ( pent ) ((*(pent) & 3) == 0)

Definition at line 51 of file exynos-iommu.c.

#define lv2ent_large ( pent ) ((*(pent) & 3) == 1)

Definition at line 53 of file exynos-iommu.c.

#define lv2ent_offset ( iova ) (((iova) & 0xFF000) >> SPAGE_ORDER)

Definition at line 63 of file exynos-iommu.c.

#define lv2ent_small ( pent ) ((*(pent) & 2) == 2)

Definition at line 52 of file exynos-iommu.c.

#define lv2table_base ( sent ) (*(sent) & 0xFFFFFC00)

Definition at line 72 of file exynos-iommu.c.

#define LV2TABLE_SIZE (NUM_LV2ENTRIES * sizeof(long))

Definition at line 68 of file exynos-iommu.c.

#define mk_lv1ent_page ( pa ) ((pa) | 1)

Definition at line 75 of file exynos-iommu.c.

#define mk_lv1ent_sect ( pa ) ((pa) | 2)

Definition at line 74 of file exynos-iommu.c.

#define mk_lv2ent_lpage ( pa ) ((pa) | 1)

Definition at line 76 of file exynos-iommu.c.

#define mk_lv2ent_spage ( pa ) ((pa) | 2)

Definition at line 77 of file exynos-iommu.c.

#define NUM_LV1ENTRIES 4096

Definition at line 65 of file exynos-iommu.c.

#define NUM_LV2ENTRIES 256

Definition at line 66 of file exynos-iommu.c.

#define REG_AR_FAULT_ADDR 0x02C

Definition at line 94 of file exynos-iommu.c.

#define REG_AW_FAULT_ADDR 0x028

Definition at line 93 of file exynos-iommu.c.

#define REG_DEFAULT_SLAVE_ADDR 0x030

Definition at line 95 of file exynos-iommu.c.

#define REG_INT_CLEAR 0x01C

Definition at line 90 of file exynos-iommu.c.

#define REG_INT_STATUS 0x018

Definition at line 89 of file exynos-iommu.c.

#define REG_MMU_CFG 0x004

Definition at line 84 of file exynos-iommu.c.

#define REG_MMU_CTRL 0x000

Definition at line 83 of file exynos-iommu.c.

#define REG_MMU_FLUSH 0x00C

Definition at line 86 of file exynos-iommu.c.

#define REG_MMU_FLUSH_ENTRY 0x010

Definition at line 87 of file exynos-iommu.c.

#define REG_MMU_STATUS 0x008

Definition at line 85 of file exynos-iommu.c.

#define REG_MMU_VERSION 0x034

Definition at line 97 of file exynos-iommu.c.

#define REG_PAGE_FAULT_ADDR 0x024

Definition at line 92 of file exynos-iommu.c.

#define REG_PB0_EADDR 0x050

Definition at line 100 of file exynos-iommu.c.

#define REG_PB0_SADDR 0x04C

Definition at line 99 of file exynos-iommu.c.

#define REG_PB1_EADDR 0x058

Definition at line 102 of file exynos-iommu.c.

#define REG_PB1_SADDR 0x054

Definition at line 101 of file exynos-iommu.c.

#define REG_PT_BASE_ADDR 0x014

Definition at line 88 of file exynos-iommu.c.

#define SECT_MASK (~(SECT_SIZE - 1))

Definition at line 43 of file exynos-iommu.c.

#define SECT_ORDER 20

Definition at line 35 of file exynos-iommu.c.

#define SECT_SIZE (1 << SECT_ORDER)

Definition at line 39 of file exynos-iommu.c.

#define section_offs ( iova ) ((iova) & 0xFFFFF)

Definition at line 56 of file exynos-iommu.c.

#define section_phys ( sent ) (*(sent) & SECT_MASK)

Definition at line 55 of file exynos-iommu.c.

#define SPAGE_MASK (~(SPAGE_SIZE - 1))

Definition at line 45 of file exynos-iommu.c.

#define spage_offs ( iova ) ((iova) & 0xFFF)

Definition at line 60 of file exynos-iommu.c.

#define SPAGE_ORDER 12

Definition at line 37 of file exynos-iommu.c.

#define spage_phys ( pent ) (*(pent) & SPAGE_MASK)

Definition at line 59 of file exynos-iommu.c.

#define SPAGE_SIZE (1 << SPAGE_ORDER)

Definition at line 41 of file exynos-iommu.c.

#define SPAGES_PER_LPAGE (LPAGE_SIZE / SPAGE_SIZE)

Definition at line 70 of file exynos-iommu.c.

Typedef Documentation

typedef int(* sysmmu_fault_handler_t)(enum exynos_sysmmu_inttype itype, unsigned long pgtable_base, unsigned long fault_addr)

Definition at line 134 of file exynos-iommu.c.

Enumeration Type Documentation

enum exynos_sysmmu_inttype

Enumerator:

SYSMMU_PAGEFAULT
SYSMMU_AR_MULTIHIT
SYSMMU_AW_MULTIHIT
SYSMMU_BUSERROR
SYSMMU_AR_SECURITY
SYSMMU_AR_ACCESS
SYSMMU_AW_SECURITY
SYSMMU_AW_PROTECTION
SYSMMU_FAULT_UNKNOWN
SYSMMU_FAULTS_NUM

Definition at line 114 of file exynos-iommu.c.

Function Documentation

bool exynos_sysmmu_disable ( struct device * dev )

Definition at line 514 of file exynos-iommu.c.

int exynos_sysmmu_enable	(	struct device *	dev,
		unsigned long	pgtable
	)

Definition at line 488 of file exynos-iommu.c.

void exynos_sysmmu_set_fault_handler	(	struct device *	dev,
		sysmmu_fault_handler_t	handler
	)

Definition at line 304 of file exynos-iommu.c.

void exynos_sysmmu_set_prefbuf	(	struct device *	dev,
		unsigned long	base0,
		unsigned long	size0,
		unsigned long	base1,
		unsigned long	size1
	)

Definition at line 250 of file exynos-iommu.c.

void exynos_sysmmu_tlb_invalidate ( struct device * dev )

Definition at line 550 of file exynos-iommu.c.

subsys_initcall ( exynos_iommu_init )

Data Structures

Macros

Typedefs

Enumerations

Functions

Macro Definition Documentation

Typedef Documentation

Enumeration Type Documentation

Function Documentation