iommu.c File Reference

#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/dma-mapping.h>
#include <linux/errno.h>
#include <linux/iommu-helper.h>
#include <linux/bitmap.h>
#include <asm/iommu.h>
#include "iommu_common.h"

Go to the source code of this file.

Macros
#define	STC_CTXMATCH_ADDR(STC, CTX)   ((STC)->strbuf_ctxmatch_base + ((CTX) << 3))
#define	STC_FLUSHFLAG_INIT(STC)   (*((STC)->strbuf_flushflag) = 0UL)
#define	STC_FLUSHFLAG_SET(STC)   (*((STC)->strbuf_flushflag) != 0UL)
#define	iommu_read(__reg)
#define	iommu_write(__reg, __val)
#define	IOPTE_CONSISTENT(CTX)
#define	IOPTE_STREAMING(CTX)   (IOPTE_CONSISTENT(CTX) | IOPTE_STBUF)
#define	IOPTE_IS_DUMMY(iommu, iopte)   ((iopte_val(*iopte) & IOPTE_PAGE) == (iommu)->dummy_page_pa)

Functions
unsigned long	iommu_range_alloc (struct device *dev, struct iommu *iommu, unsigned long npages, unsigned long *handle)
void	iommu_range_free (struct iommu *iommu, dma_addr_t dma_addr, unsigned long npages)
int	iommu_table_init (struct iommu *iommu, int tsbsize, u32 dma_offset, u32 dma_addr_mask, int numa_node)
	EXPORT_SYMBOL (dma_ops)
int	pci64_dma_supported (struct pci_dev *pdev, u64 device_mask)
int	dma_supported (struct device *dev, u64 device_mask)
	EXPORT_SYMBOL (dma_supported)

Variables
struct dma_map_ops *	dma_ops = &sun4u_dma_ops

Macro Definition Documentation

#define iommu_read

(

__reg

)

Value:

({  u64 __ret; \
    __asm__ __volatile__("ldxa [%1] %2, %0" \
                 : "=r" (__ret) \
                 : "r" (__reg), "i" (ASI_PHYS_BYPASS_EC_E) \
                 : "memory"); \
    __ret; \
})

Definition at line 32 of file iommu.c.

#define iommu_write	(		__reg,
			__val
	)

Value:

__asm__ __volatile__("stxa %0, [%1] %2" \
                 : /* no outputs */ \
                 : "r" (__val), "r" (__reg), \
                   "i" (ASI_PHYS_BYPASS_EC_E))

Definition at line 40 of file iommu.c.

#define IOPTE_CONSISTENT

(

CTX

)

Value:

(IOPTE_VALID | IOPTE_CACHE | \
     (((CTX) << 47) & IOPTE_CONTEXT))

Definition at line 66 of file iommu.c.

#define IOPTE_IS_DUMMY	(		iommu,
			iopte
	)		((iopte_val(*iopte) & IOPTE_PAGE) == (iommu)->dummy_page_pa)

Definition at line 76 of file iommu.c.

#define IOPTE_STREAMING

(

CTX

)

(IOPTE_CONSISTENT(CTX) | IOPTE_STBUF)

Definition at line 70 of file iommu.c.

#define STC_CTXMATCH_ADDR	(		STC,
			CTX
	)		((STC)->strbuf_ctxmatch_base + ((CTX) << 3))

Definition at line 25 of file iommu.c.

#define STC_FLUSHFLAG_INIT

(

STC

)

(*((STC)->strbuf_flushflag) = 0UL)

Definition at line 27 of file iommu.c.

#define STC_FLUSHFLAG_SET

(

STC

)

(*((STC)->strbuf_flushflag) != 0UL)

Definition at line 29 of file iommu.c.

Function Documentation

int dma_supported	(	struct device *	dev,
		u64	device_mask
	)

Definition at line 845 of file iommu.c.

EXPORT_SYMBOL

(

dma_ops

)

EXPORT_SYMBOL

(

dma_supported

)

unsigned long iommu_range_alloc	(	struct device *	dev,
		struct iommu *	iommu,
		unsigned long	npages,
		unsigned long *	handle
	)

Definition at line 96 of file iommu.c.

void iommu_range_free	(	struct iommu *	iommu,
		dma_addr_t	dma_addr,
		unsigned long	npages
	)

Definition at line 167 of file iommu.c.

int iommu_table_init	(	struct iommu *	iommu,
		int	tsbsize,
		u32	dma_offset,
		u32	dma_addr_mask,
		int	numa_node
	)

Definition at line 177 of file iommu.c.

int pci64_dma_supported	(	struct pci_dev *	pdev,
		u64	device_mask
	)

Definition at line 897 of file pci.c.

Variable Documentation

struct dma_map_ops* dma_ops = &sun4u_dma_ops

Definition at line 840 of file iommu.c.