diff options
author | Joerg Roedel <joerg.roedel@amd.com> | 2008-06-26 15:28:05 -0400 |
---|---|---|
committer | Ingo Molnar <mingo@elte.hu> | 2008-06-27 04:12:20 -0400 |
commit | 6631ee9d00996e7663a086b5abceba65c89ff8f6 (patch) | |
tree | 69031709fde8581aae29b6ffd6fda8c2e5535326 /arch/x86/kernel | |
parent | c432f3df8ea740e2ecb27da88bd6b5a254714959 (diff) |
x86, AMD IOMMU: add dma_ops initialization function
This patch adds the function to initialize the dma_ops for the AMD IOMMU.
Signed-off-by: Joerg 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: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel')
-rw-r--r-- | arch/x86/kernel/amd_iommu.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c index bed5f820898d..c282bdec1650 100644 --- a/arch/x86/kernel/amd_iommu.c +++ b/arch/x86/kernel/amd_iommu.c | |||
@@ -906,3 +906,49 @@ void prealloc_protection_domains(void) | |||
906 | } | 906 | } |
907 | } | 907 | } |
908 | 908 | ||
909 | static struct dma_mapping_ops amd_iommu_dma_ops = { | ||
910 | .alloc_coherent = alloc_coherent, | ||
911 | .free_coherent = free_coherent, | ||
912 | .map_single = map_single, | ||
913 | .unmap_single = unmap_single, | ||
914 | .map_sg = map_sg, | ||
915 | .unmap_sg = unmap_sg, | ||
916 | }; | ||
917 | |||
918 | int __init amd_iommu_init_dma_ops(void) | ||
919 | { | ||
920 | struct amd_iommu *iommu; | ||
921 | int order = amd_iommu_aperture_order; | ||
922 | int ret; | ||
923 | |||
924 | list_for_each_entry(iommu, &amd_iommu_list, list) { | ||
925 | iommu->default_dom = dma_ops_domain_alloc(iommu, order); | ||
926 | if (iommu->default_dom == NULL) | ||
927 | return -ENOMEM; | ||
928 | ret = iommu_init_unity_mappings(iommu); | ||
929 | if (ret) | ||
930 | goto free_domains; | ||
931 | } | ||
932 | |||
933 | if (amd_iommu_isolate) | ||
934 | prealloc_protection_domains(); | ||
935 | |||
936 | iommu_detected = 1; | ||
937 | force_iommu = 1; | ||
938 | bad_dma_address = 0; | ||
939 | gart_iommu_aperture_disabled = 1; | ||
940 | gart_iommu_aperture = 0; | ||
941 | |||
942 | dma_ops = &amd_iommu_dma_ops; | ||
943 | |||
944 | return 0; | ||
945 | |||
946 | free_domains: | ||
947 | |||
948 | list_for_each_entry(iommu, &amd_iommu_list, list) { | ||
949 | if (iommu->default_dom) | ||
950 | dma_ops_domain_free(iommu->default_dom); | ||
951 | } | ||
952 | |||
953 | return ret; | ||
954 | } | ||