summaryrefslogtreecommitdiffstats
path: root/drivers/iommu/tegra-smmu.c
diff options
context:
space:
mode:
authorLu Baolu <baolu.lu@linux.intel.com>2023-01-10 03:54:06 +0100
committerJoerg Roedel <jroedel@suse.de>2023-01-13 16:39:16 +0100
commitc1fe9119ee707459421d8f7387e803b0ea78c21b (patch)
tree66cc77a650c53be6a209d162ccabb5b3f0d8735a /drivers/iommu/tegra-smmu.c
parentiommu: Add set_platform_dma_ops iommu ops (diff)
downloadlinux-c1fe9119ee707459421d8f7387e803b0ea78c21b.tar.xz
linux-c1fe9119ee707459421d8f7387e803b0ea78c21b.zip
iommu: Add set_platform_dma_ops callbacks
For those IOMMU drivers that don't provide default domain support, add an implementation of set_platform_dma_ops callback so that the IOMMU core could return the DMA control to platform DMA ops. At the same time, with the set_platform_dma_ops implemented, there is no need for detach_dev. Remove it to avoid dead code. Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com> Link: https://lore.kernel.org/r/20230110025408.667767-4-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu/tegra-smmu.c')
-rw-r--r--drivers/iommu/tegra-smmu.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 5b1af40221ec..4c4ac22d5fb1 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -511,8 +511,9 @@ disable:
return err;
}
-static void tegra_smmu_detach_dev(struct iommu_domain *domain, struct device *dev)
+static void tegra_smmu_set_platform_dma(struct device *dev)
{
+ struct iommu_domain *domain = iommu_get_domain_for_dev(dev);
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
struct tegra_smmu_as *as = to_smmu_as(domain);
struct tegra_smmu *smmu = as->smmu;
@@ -965,11 +966,11 @@ static const struct iommu_ops tegra_smmu_ops = {
.domain_alloc = tegra_smmu_domain_alloc,
.probe_device = tegra_smmu_probe_device,
.device_group = tegra_smmu_device_group,
+ .set_platform_dma_ops = tegra_smmu_set_platform_dma,
.of_xlate = tegra_smmu_of_xlate,
.pgsize_bitmap = SZ_4K,
.default_domain_ops = &(const struct iommu_domain_ops) {
.attach_dev = tegra_smmu_attach_dev,
- .detach_dev = tegra_smmu_detach_dev,
.map = tegra_smmu_map,
.unmap = tegra_smmu_unmap,
.iova_to_phys = tegra_smmu_iova_to_phys,