tegra-gart.c File Reference

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/spinlock.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/list.h>
#include <linux/device.h>
#include <linux/io.h>
#include <linux/iommu.h>
#include <linux/of.h>
#include <asm/cacheflush.h>

Go to the source code of this file.

Data Structures
struct	gart_client
struct	gart_device

Macros
#define	pr_fmt(fmt)   "%s(): " fmt, __func__
#define	GART_IOMMU_PGSIZES   (SZ_4K)
#define	GART_REG_BASE   0x24
#define	GART_CONFIG   (0x24 - GART_REG_BASE)
#define	GART_ENTRY_ADDR   (0x28 - GART_REG_BASE)
#define	GART_ENTRY_DATA   (0x2c - GART_REG_BASE)
#define	GART_ENTRY_PHYS_ADDR_VALID   (1 << 31)
#define	GART_PAGE_SHIFT   12
#define	GART_PAGE_SIZE   (1 << GART_PAGE_SHIFT)
#define	GART_PAGE_MASK   (~(GART_PAGE_SIZE - 1) & ~GART_ENTRY_PHYS_ADDR_VALID)
#define	GART_PTE(_pfn)   (GART_ENTRY_PHYS_ADDR_VALID | ((_pfn) << PAGE_SHIFT))
#define	FLUSH_GART_REGS(gart)   ((void)readl((gart)->regs + GART_CONFIG))
#define	for_each_gart_pte(gart, iova)

Functions
	subsys_initcall (tegra_gart_init)
	module_exit (tegra_gart_exit)
	MODULE_DESCRIPTION ("IOMMU API for GART in Tegra20")
	MODULE_AUTHOR ("Hiroshi DOYU <[email protected]>")
	MODULE_ALIAS ("platform:tegra-gart")
	MODULE_LICENSE ("GPL v2")

Variables
struct dev_pm_ops	tegra_gart_pm_ops

Macro Definition Documentation

#define FLUSH_GART_REGS

(

gart

)

((void)readl((gart)->regs + GART_CONFIG))

Definition at line 76 of file tegra-gart.c.

#define for_each_gart_pte	(		gart,
			iova
	)

Value:

for (iova = gart->iovmm_base;                   \
         iova < gart->iovmm_base + GART_PAGE_SIZE * gart->page_count; \
         iova += GART_PAGE_SIZE)

Definition at line 78 of file tegra-gart.c.

#define GART_CONFIG   (0x24 - GART_REG_BASE)

Definition at line 40 of file tegra-gart.c.

#define GART_ENTRY_ADDR   (0x28 - GART_REG_BASE)

Definition at line 41 of file tegra-gart.c.

#define GART_ENTRY_DATA   (0x2c - GART_REG_BASE)

Definition at line 42 of file tegra-gart.c.

#define GART_ENTRY_PHYS_ADDR_VALID   (1 << 31)

Definition at line 43 of file tegra-gart.c.

#define GART_IOMMU_PGSIZES   (SZ_4K)

Definition at line 37 of file tegra-gart.c.

#define GART_PAGE_MASK   (~(GART_PAGE_SIZE - 1) & ~GART_ENTRY_PHYS_ADDR_VALID)

Definition at line 47 of file tegra-gart.c.

#define GART_PAGE_SHIFT   12

Definition at line 45 of file tegra-gart.c.

#define GART_PAGE_SIZE   (1 << GART_PAGE_SHIFT)

Definition at line 46 of file tegra-gart.c.

#define GART_PTE

(

_pfn

)

(GART_ENTRY_PHYS_ADDR_VALID | ((_pfn) << PAGE_SHIFT))

Definition at line 68 of file tegra-gart.c.

#define GART_REG_BASE   0x24

Definition at line 39 of file tegra-gart.c.

#define pr_fmt

(

fmt

)

"%s(): " fmt, __func__

Definition at line 20 of file tegra-gart.c.

Function Documentation

MODULE_ALIAS

(

"platform:tegra-gart"

)

MODULE_AUTHOR

(

"Hiroshi DOYU <[email protected]>"

)

MODULE_DESCRIPTION

(

"IOMMU API for GART in Tegra20"

)

module_exit

(

tegra_gart_exit

)

MODULE_LICENSE

(

"GPL v2"

)

subsys_initcall

(

tegra_gart_init

)

Variable Documentation

struct dev_pm_ops tegra_gart_pm_ops

Initial value:

= {
    .suspend    = tegra_gart_suspend,
    .resume     = tegra_gart_resume,
}

Definition at line 427 of file tegra-gart.c.