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path: root/drivers/iommu/mtk_iommu_v1.c
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Diffstat (limited to 'drivers/iommu/mtk_iommu_v1.c')
-rw-r--r--drivers/iommu/mtk_iommu_v1.c28
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/iommu/mtk_iommu_v1.c b/drivers/iommu/mtk_iommu_v1.c
index 8a0a5e5d04..67e044c1a7 100644
--- a/drivers/iommu/mtk_iommu_v1.c
+++ b/drivers/iommu/mtk_iommu_v1.c
@@ -270,13 +270,10 @@ static int mtk_iommu_v1_domain_finalise(struct mtk_iommu_v1_data *data)
return 0;
}
-static struct iommu_domain *mtk_iommu_v1_domain_alloc(unsigned type)
+static struct iommu_domain *mtk_iommu_v1_domain_alloc_paging(struct device *dev)
{
struct mtk_iommu_v1_domain *dom;
- if (type != IOMMU_DOMAIN_UNMANAGED)
- return NULL;
-
dom = kzalloc(sizeof(*dom), GFP_KERNEL);
if (!dom)
return NULL;
@@ -319,13 +316,24 @@ static int mtk_iommu_v1_attach_device(struct iommu_domain *domain, struct device
return 0;
}
-static void mtk_iommu_v1_set_platform_dma(struct device *dev)
+static int mtk_iommu_v1_identity_attach(struct iommu_domain *identity_domain,
+ struct device *dev)
{
struct mtk_iommu_v1_data *data = dev_iommu_priv_get(dev);
mtk_iommu_v1_config(data, dev, false);
+ return 0;
}
+static struct iommu_domain_ops mtk_iommu_v1_identity_ops = {
+ .attach_dev = mtk_iommu_v1_identity_attach,
+};
+
+static struct iommu_domain mtk_iommu_v1_identity_domain = {
+ .type = IOMMU_DOMAIN_IDENTITY,
+ .ops = &mtk_iommu_v1_identity_ops,
+};
+
static int mtk_iommu_v1_map(struct iommu_domain *domain, unsigned long iova,
phys_addr_t paddr, size_t pgsize, size_t pgcount,
int prot, gfp_t gfp, size_t *mapped)
@@ -441,11 +449,6 @@ static int mtk_iommu_v1_create_mapping(struct device *dev, struct of_phandle_arg
return 0;
}
-static int mtk_iommu_v1_def_domain_type(struct device *dev)
-{
- return IOMMU_DOMAIN_UNMANAGED;
-}
-
static struct iommu_device *mtk_iommu_v1_probe_device(struct device *dev)
{
struct iommu_fwspec *fwspec = dev_iommu_fwspec_get(dev);
@@ -578,14 +581,13 @@ static int mtk_iommu_v1_hw_init(const struct mtk_iommu_v1_data *data)
}
static const struct iommu_ops mtk_iommu_v1_ops = {
- .domain_alloc = mtk_iommu_v1_domain_alloc,
+ .identity_domain = &mtk_iommu_v1_identity_domain,
+ .domain_alloc_paging = mtk_iommu_v1_domain_alloc_paging,
.probe_device = mtk_iommu_v1_probe_device,
.probe_finalize = mtk_iommu_v1_probe_finalize,
.release_device = mtk_iommu_v1_release_device,
- .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,