From c1fe9119ee707459421d8f7387e803b0ea78c21b Mon Sep 17 00:00:00 2001 From: Lu Baolu Date: Tue, 10 Jan 2023 10:54:06 +0800 Subject: [PATCH] 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 Signed-off-by: Lu Baolu Link: https://lore.kernel.org/r/20230110025408.667767-4-baolu.lu@linux.intel.com Signed-off-by: Joerg Roedel --- drivers/iommu/fsl_pamu_domain.c | 6 +++--- drivers/iommu/msm_iommu.c | 6 +++--- drivers/iommu/mtk_iommu_v1.c | 4 ++-- drivers/iommu/omap-iommu.c | 6 +++--- drivers/iommu/s390-iommu.c | 7 ++----- drivers/iommu/tegra-gart.c | 6 +++--- drivers/iommu/tegra-smmu.c | 5 +++-- 7 files changed, 19 insertions(+), 21 deletions(-) diff --git a/drivers/iommu/fsl_pamu_domain.c b/drivers/iommu/fsl_pamu_domain.c index 4408ac3..e123161c 100644 --- a/drivers/iommu/fsl_pamu_domain.c +++ b/drivers/iommu/fsl_pamu_domain.c @@ -283,9 +283,9 @@ static int fsl_pamu_attach_device(struct iommu_domain *domain, return ret; } -static void fsl_pamu_detach_device(struct iommu_domain *domain, - struct device *dev) +static void fsl_pamu_set_platform_dma(struct device *dev) { + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); struct fsl_dma_domain *dma_domain = to_fsl_dma_domain(domain); const u32 *prop; int len; @@ -452,9 +452,9 @@ static const struct iommu_ops fsl_pamu_ops = { .domain_alloc = fsl_pamu_domain_alloc, .probe_device = fsl_pamu_probe_device, .device_group = fsl_pamu_device_group, + .set_platform_dma_ops = fsl_pamu_set_platform_dma; .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = fsl_pamu_attach_device, - .detach_dev = fsl_pamu_detach_device, .iova_to_phys = fsl_pamu_iova_to_phys, .free = fsl_pamu_domain_free, } diff --git a/drivers/iommu/msm_iommu.c b/drivers/iommu/msm_iommu.c index c606249..454f633 100644 --- a/drivers/iommu/msm_iommu.c +++ b/drivers/iommu/msm_iommu.c @@ -443,9 +443,9 @@ fail: return ret; } -static void msm_iommu_detach_dev(struct iommu_domain *domain, - struct device *dev) +static void msm_iommu_set_platform_dma(struct device *dev) { + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); struct msm_priv *priv = to_msm_priv(domain); unsigned long flags; struct msm_iommu_dev *iommu; @@ -678,11 +678,11 @@ static struct iommu_ops msm_iommu_ops = { .domain_alloc = msm_iommu_domain_alloc, .probe_device = msm_iommu_probe_device, .device_group = generic_device_group, + .set_platform_dma_ops = msm_iommu_set_platform_dma, .pgsize_bitmap = MSM_IOMMU_PGSIZES, .of_xlate = qcom_iommu_of_xlate, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = msm_iommu_attach_dev, - .detach_dev = msm_iommu_detach_dev, .map_pages = msm_iommu_map, .unmap_pages = msm_iommu_unmap, /* diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c index 69682ee..78d0a84 100644 --- a/drivers/iommu/mtk_iommu_v1.c +++ b/drivers/iommu/mtk_iommu_v1.c @@ -319,7 +319,7 @@ static int mtk_iommu_v1_attach_device(struct iommu_domain *domain, struct device return 0; } -static void mtk_iommu_v1_detach_device(struct iommu_domain *domain, struct device *dev) +static void mtk_iommu_v1_set_platform_dma(struct device *dev) { struct mtk_iommu_v1_data *data = dev_iommu_priv_get(dev); @@ -585,10 +585,10 @@ static const struct iommu_ops mtk_iommu_v1_ops = { .def_domain_type = mtk_iommu_v1_def_domain_type, .device_group = generic_device_group, .pgsize_bitmap = MT2701_IOMMU_PAGE_SIZE, + .set_platform_dma_ops = mtk_iommu_v1_set_platform_dma, .owner = THIS_MODULE, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = mtk_iommu_v1_attach_device, - .detach_dev = mtk_iommu_v1_detach_device, .map_pages = mtk_iommu_v1_map, .unmap_pages = mtk_iommu_v1_unmap, .iova_to_phys = mtk_iommu_v1_iova_to_phys, diff --git a/drivers/iommu/omap-iommu.c b/drivers/iommu/omap-iommu.c index 2fd7702..3ab0781 100644 --- a/drivers/iommu/omap-iommu.c +++ b/drivers/iommu/omap-iommu.c @@ -1556,9 +1556,9 @@ static void _omap_iommu_detach_dev(struct omap_iommu_domain *omap_domain, omap_domain->dev = NULL; } -static void omap_iommu_detach_dev(struct iommu_domain *domain, - struct device *dev) +static void omap_iommu_set_platform_dma(struct device *dev) { + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); struct omap_iommu_domain *omap_domain = to_omap_domain(domain); spin_lock(&omap_domain->lock); @@ -1737,10 +1737,10 @@ static const struct iommu_ops omap_iommu_ops = { .probe_device = omap_iommu_probe_device, .release_device = omap_iommu_release_device, .device_group = omap_iommu_device_group, + .set_platform_dma_ops = omap_iommu_set_platform_dma, .pgsize_bitmap = OMAP_IOMMU_PGSIZES, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = omap_iommu_attach_dev, - .detach_dev = omap_iommu_detach_dev, .map = omap_iommu_map, .unmap = omap_iommu_unmap, .iova_to_phys = omap_iommu_iova_to_phys, diff --git a/drivers/iommu/s390-iommu.c b/drivers/iommu/s390-iommu.c index ed33c6c..5591dab 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, diff --git a/drivers/iommu/tegra-gart.c b/drivers/iommu/tegra-gart.c index ed53279..a482ff8 100644 --- a/drivers/iommu/tegra-gart.c +++ b/drivers/iommu/tegra-gart.c @@ -124,9 +124,9 @@ static int gart_iommu_attach_dev(struct iommu_domain *domain, return ret; } -static void gart_iommu_detach_dev(struct iommu_domain *domain, - struct device *dev) +static void gart_iommu_set_platform_dma(struct device *dev) { + struct iommu_domain *domain = iommu_get_domain_for_dev(dev); struct gart_device *gart = gart_handle; spin_lock(&gart->dom_lock); @@ -270,11 +270,11 @@ static const struct iommu_ops gart_iommu_ops = { .domain_alloc = gart_iommu_domain_alloc, .probe_device = gart_iommu_probe_device, .device_group = generic_device_group, + .set_platform_dma_ops = gart_iommu_set_platform_dma, .pgsize_bitmap = GART_IOMMU_PGSIZES, .of_xlate = gart_iommu_of_xlate, .default_domain_ops = &(const struct iommu_domain_ops) { .attach_dev = gart_iommu_attach_dev, - .detach_dev = gart_iommu_detach_dev, .map = gart_iommu_map, .unmap = gart_iommu_unmap, .iova_to_phys = gart_iommu_iova_to_phys, diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c index 5b1af40..4c4ac22 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, -- 2.7.4