Commit 7ef2798d authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Add IRTE invalidation routine 



Add routine to invalidate the IOMMU cache for interupt
translations. Also include the IRTE caches when flushing all
IOMMU caches.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent f6fec00a

drivers/iommu/amd_iommu.c

+27 −0
Original line number Diff line number Diff line
@@ -902,6 +902,13 @@ static void build_inv_all(struct iommu_cmd *cmd) 
	CMD_SET_TYPE(cmd, CMD_INV_ALL);

}



static void build_inv_irt(struct iommu_cmd *cmd, u16 devid)

{

	memset(cmd, 0, sizeof(*cmd));

	cmd->data[0] = devid;

	CMD_SET_TYPE(cmd, CMD_INV_IRT);

}



/*

 * Writes the command to the IOMMUs command buffer and informs the

 * hardware about the new command.
@@ -1023,12 +1030,32 @@ static void iommu_flush_all(struct amd_iommu *iommu) 
	iommu_completion_wait(iommu);

}



static void iommu_flush_irt(struct amd_iommu *iommu, u16 devid)

{

	struct iommu_cmd cmd;



	build_inv_irt(&cmd, devid);



	iommu_queue_command(iommu, &cmd);

}



static void iommu_flush_irt_all(struct amd_iommu *iommu)

{

	u32 devid;



	for (devid = 0; devid <= MAX_DEV_TABLE_ENTRIES; devid++)

		iommu_flush_irt(iommu, devid);



	iommu_completion_wait(iommu);

}



void iommu_flush_all_caches(struct amd_iommu *iommu)

{

	if (iommu_feature(iommu, FEATURE_IA)) {

		iommu_flush_all(iommu);

	} else {

		iommu_flush_dte_all(iommu);

		iommu_flush_irt_all(iommu);

		iommu_flush_tlb_all(iommu);

	}

}

drivers/iommu/amd_iommu_types.h

+3 −0
Original line number Diff line number Diff line
@@ -152,6 +152,7 @@ 
#define CMD_INV_DEV_ENTRY       0x02

#define CMD_INV_IOMMU_PAGES	0x03

#define CMD_INV_IOTLB_PAGES	0x04

#define CMD_INV_IRT		0x05

#define CMD_COMPLETE_PPR	0x07

#define CMD_INV_ALL		0x08
@@ -184,6 +185,8 @@ 
#define DEV_ENTRY_MODE_MASK	0x07

#define DEV_ENTRY_MODE_SHIFT	0x09



#define MAX_DEV_TABLE_ENTRIES	0xffff



/* constants to configure the command buffer */

#define CMD_BUFFER_SIZE    8192

#define CMD_BUFFER_UNINITIALIZED 1