diff options
| author | Lu Baolu <baolu.lu@linux.intel.com> | 2023-01-10 05:54:06 +0300 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2023-01-13 18:39:16 +0300 |
| commit | c1fe9119ee707459421d8f7387e803b0ea78c21b (patch) | |
| tree | 66cc77a650c53be6a209d162ccabb5b3f0d8735a /drivers/iommu/s390-iommu.c | |
| parent | 6caeb33fa986151f745fc62190bc28a593b8a0d2 (diff) | |
| download | linux-c1fe9119ee707459421d8f7387e803b0ea78c21b.tar.xz | |
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/s390-iommu.c')
| -rw-r--r-- | drivers/iommu/s390-iommu.c | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index ed33c6cce083..5591dab99446 100644 --- a/drivers/iommu/s390-iommu.c +++ b/drivers/iommu/s390-iommu.c @@ -144,13 +144,10 @@ static int s390_iommu_attach_device(struct iommu_domain *domain, return 0; } -static void s390_iommu_detach_device(struct iommu_domain *domain, - struct device *dev) +static void s390_iommu_set_platform_dma(struct device *dev) { struct zpci_dev *zdev = to_zpci_dev(dev); - WARN_ON(zdev->s390_domain != to_s390_domain(domain)); - __s390_iommu_detach_device(zdev); zpci_dma_init_device(zdev); } @@ -435,11 +432,11 @@ static const struct iommu_ops s390_iommu_ops = { .probe_device = s390_iommu_probe_device, .release_device = s390_iommu_release_device, .device_group = generic_device_group, + .set_platform_dma_ops = s390_iommu_set_platform_dma, .pgsize_bitmap = SZ_4K, .get_resv_regions = s390_iommu_get_resv_regions, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = s390_iommu_attach_device, - .detach_dev = s390_iommu_detach_device, .map_pages = s390_iommu_map_pages, .unmap_pages = s390_iommu_unmap_pages, .flush_iotlb_all = s390_iommu_flush_iotlb_all, |