diff options
| author | Robin Murphy <robin.murphy@arm.com> | 2023-05-04 22:10:56 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-05-22 17:38:45 +0200 |
| commit | a4fdd976227240b06ced89b5df88a1a1f388f092 (patch) | |
| tree | 063b300e46cfcab8257fdc83262fd5db789f2ed7 /drivers/iommu/dma-iommu.c | |
| parent | 4a20ce0ff68eb6fc4b1e8f25139c93b312f21229 (diff) | |
iommu: Use flush queue capability
It remains really handy to have distinct DMA domain types within core
code for the sake of default domain policy selection, but we can now
hide that detail from drivers by using the new capability instead.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Tested-by: Jerry Snitselaar <jsnitsel@redhat.com> # amd, intel, smmu-v3
Reviewed-by: Jerry Snitselaar <jsnitsel@redhat.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/1c552d99e8ba452bdac48209fa74c0bdd52fd9d9.1683233867.git.robin.murphy@arm.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/dma-iommu.c')
| -rw-r--r-- | drivers/iommu/dma-iommu.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index 7a9f0b0bddbd..c4bdd2587daf 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -586,7 +586,8 @@ static int iommu_dma_init_domain(struct iommu_domain *domain, dma_addr_t base, goto done_unlock; /* If the FQ fails we can simply fall back to strict mode */ - if (domain->type == IOMMU_DOMAIN_DMA_FQ && iommu_dma_init_fq(domain)) + if (domain->type == IOMMU_DOMAIN_DMA_FQ && + (!device_iommu_capable(dev, IOMMU_CAP_DEFERRED_FLUSH) || iommu_dma_init_fq(domain))) domain->type = IOMMU_DOMAIN_DMA; ret = iova_reserve_iommu_regions(dev, domain); |