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| author | Joerg Roedel <joerg.roedel@amd.com> | 2011-11-23 12:36:25 +0100 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-12-12 15:19:05 +0100 |
| commit | f3572db823decfd747e6afd4c4ddfd67e8af8b6d (patch) | |
| tree | e806c8acc077ff9a3827f6dc4ab516fb76c65395 /drivers/iommu/amd_iommu.c | |
| parent | c99afa25b67339b5fa7ef3767398878be9f60e1f (diff) | |
| download | linux-f3572db823decfd747e6afd4c4ddfd67e8af8b6d.tar.gz linux-f3572db823decfd747e6afd4c4ddfd67e8af8b6d.tar.xz linux-f3572db823decfd747e6afd4c4ddfd67e8af8b6d.zip | |
iommu/amd: Add function to get IOMMUv2 domain for pdev
The AMD IOMMUv2 driver needs to get the IOMMUv2 domain
associated with a particular device. This patch adds a
function to get this information.
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/amd_iommu.c')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index 9a7e64b245a7..71773d0fb769 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -2958,6 +2958,8 @@ static int amd_iommu_domain_init(struct iommu_domain *dom) if (!domain->pt_root) goto out_free; + domain->iommu_domain = dom; + dom->priv = domain; return 0; @@ -3463,3 +3465,19 @@ int amd_iommu_complete_ppr(struct pci_dev *pdev, int pasid, return iommu_queue_command(iommu, &cmd); } EXPORT_SYMBOL(amd_iommu_complete_ppr); + +struct iommu_domain *amd_iommu_get_v2_domain(struct pci_dev *pdev) +{ + struct protection_domain *domain; + + domain = get_domain(&pdev->dev); + if (IS_ERR(domain)) + return NULL; + + /* Only return IOMMUv2 domains */ + if (!(domain->flags & PD_IOMMUV2_MASK)) + return NULL; + + return domain->iommu_domain; +} +EXPORT_SYMBOL(amd_iommu_get_v2_domain); |