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| author | Eric Auger <eric.auger@redhat.com> | 2017-01-19 20:57:48 (GMT) |
|---|---|---|
| committer | Xie Xiaobo <xiaobo.xie@nxp.com> | 2017-09-25 07:25:44 (GMT) |
| commit | 1e6de8d364806cf2c71e604aca9e86e473127b79 (patch) | |
| tree | 7be4e1e9155eb3c45d09f3115f30d906ac6950c5 /drivers/iommu | |
| parent | c296d3db17d4cde34e68939a438ced8e1e0c223f (diff) | |
| download | linux-1e6de8d364806cf2c71e604aca9e86e473127b79.tar.xz | |
iommu: Add a new type field in iommu_resv_region
We introduce a new field to differentiate the reserved region
types and specialize the apply_resv_region implementation.
Legacy direct mapped regions have IOMMU_RESV_DIRECT type.
We introduce 2 new reserved memory types:
- IOMMU_RESV_MSI will characterize MSI regions that are mapped
- IOMMU_RESV_RESERVED characterize regions that cannot by mapped.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Tomasz Nowicki <tomasz.nowicki@caviumnetworks.com>
Tested-by: Bharat Bhushan <bharat.bhushan@nxp.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/iommu')
| -rw-r--r-- | drivers/iommu/amd_iommu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index a57195a..8cc046d 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3184,6 +3184,7 @@ static void amd_iommu_get_resv_regions(struct device *dev, region->start = entry->address_start; region->length = entry->address_end - entry->address_start; + region->type = IOMMU_RESV_DIRECT; if (entry->prot & IOMMU_PROT_IR) region->prot |= IOMMU_READ; if (entry->prot & IOMMU_PROT_IW) |