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Commit 11ee5ac4 authored by Joerg Roedel's avatar Joerg Roedel
Browse files

iommu/amd: Split enable_iommus() routine 



Split the enable_iommus() routine so that a part of it can
run in early code.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
parent 643511b3

drivers/iommu/amd_iommu_init.c

+18 −3
Original line number Original line Diff line number Diff line
@@ -1379,7 +1379,7 @@ static void iommu_apply_resume_quirks(struct amd_iommu *iommu) 
 * This function finally enables all IOMMUs found in the system after

 * This function finally enables all IOMMUs found in the system after

 * they have been initialized

 * they have been initialized

 */

 */

static void enable_iommus(void)

static void early_enable_iommus(void)

{

{

	struct amd_iommu *iommu;

	struct amd_iommu *iommu;
@@ -1389,14 +1389,29 @@ static void enable_iommus(void) 
		iommu_set_device_table(iommu);

		iommu_set_device_table(iommu);

		iommu_enable_command_buffer(iommu);

		iommu_enable_command_buffer(iommu);

		iommu_enable_event_buffer(iommu);

		iommu_enable_event_buffer(iommu);

		iommu_enable_ppr_log(iommu);

		iommu_enable_gt(iommu);

		iommu_set_exclusion_range(iommu);

		iommu_set_exclusion_range(iommu);

		iommu_enable(iommu);

		iommu_enable(iommu);

		iommu_flush_all_caches(iommu);

		iommu_flush_all_caches(iommu);

	}

	}

}

}





static void enable_iommus_v2(void)

{

	struct amd_iommu *iommu;



	for_each_iommu(iommu) {

		iommu_enable_ppr_log(iommu);

		iommu_enable_gt(iommu);

	}

}



static void enable_iommus(void)

{

	early_enable_iommus();



	enable_iommus_v2();

}



static void disable_iommus(void)

static void disable_iommus(void)

{

{

	struct amd_iommu *iommu;

	struct amd_iommu *iommu;