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Commit 8736197b authored by Joerg Roedel's avatar Joerg Roedel Committed by Ingo Molnar
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x86, AMD IOMMU: initialize dma_ops from IOMMU initialization and enable IOMMUs 



This patch adds a call to the driver specific dma_ops initialization routine
from the AMD IOMMU hardware initialization. Further it adds the necessary code
to finally enable AMD IOMMU hardware.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: Sebastian.Biemueller@amd.com
Cc: robert.richter@amd.com
Cc: joro@8bytes.org
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent c6da992e

arch/x86/kernel/amd_iommu_init.c

+16 −0
Original line number Diff line number Diff line
@@ -644,6 +644,16 @@ static int __init init_memory_definitions(struct acpi_table_header *table) 
	return 0;

}



static void __init enable_iommus(void)

{

	struct amd_iommu *iommu;



	list_for_each_entry(iommu, &amd_iommu_list, list) {

		iommu_set_exclusion_range(iommu);

		iommu_enable(iommu);

	}

}



int __init amd_iommu_init(void)

{

	int i, ret = 0;
@@ -731,6 +741,12 @@ int __init amd_iommu_init(void) 
	if (acpi_table_parse("IVRS", init_memory_definitions) != 0)

		goto free;



	ret = amd_iommu_init_dma_ops();

	if (ret)

		goto free;



	enable_iommus();



	printk(KERN_INFO "AMD IOMMU: aperture size is %d MB\n",

			(1 << (amd_iommu_aperture_order-20)));