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iommu/amd: Support IOMMU_DOMAIN_IDENTITY type allocation

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Add support to allocate direct mapped domains through the
IOMMU-API.

Signed-off-by: Joerg Roedel <jroedel@suse.de>
This commit is contained in:
Joerg Roedel 2015-05-28 18:41:41 +02:00
parent 0bb6e243d7
commit 07f643a35d
1 changed files with 7 additions and 0 deletions
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7
drivers/iommu/amd_iommu.c
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@ -2996,6 +2996,13 @@ static struct iommu_domain *amd_iommu_domain_alloc(unsigned type)
} }
pdomain = &dma_domain->domain; pdomain = &dma_domain->domain;
break; break;
case IOMMU_DOMAIN_IDENTITY:
pdomain = protection_domain_alloc();
if (!pdomain)
return NULL;
pdomain->mode = PAGE_MODE_NONE;
break;
default: default:
return NULL; return NULL;
} }