[PATCH v4 24/25] iommu: Convert simple drivers with DOMAIN_DMA to domain_alloc_paging()

[Jason Gunthorpe <jgg@nvidia.com>]

These drivers are all trivially converted since the function is only
called if the domain type is going to be
IOMMU_DOMAIN_UNMANAGED/DMA.

Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Steven Price <steven.price@arm.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Tested-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---
 drivers/iommu/arm/arm-smmu/qcom_iommu.c | 6 ++----
 drivers/iommu/exynos-iommu.c            | 7 ++-----
 drivers/iommu/ipmmu-vmsa.c              | 7 ++-----
 drivers/iommu/mtk_iommu.c               | 7 ++-----
 drivers/iommu/rockchip-iommu.c          | 7 ++-----
 drivers/iommu/sprd-iommu.c              | 7 ++-----
 drivers/iommu/sun50i-iommu.c            | 9 +++------
 drivers/iommu/tegra-smmu.c              | 7 ++-----
 8 files changed, 17 insertions(+), 40 deletions(-)

diff --git a/drivers/iommu/arm/arm-smmu/qcom_iommu.c b/drivers/iommu/arm/arm-smmu/qcom_iommu.c
index 9d7b9d8b4386d4..a2140fdc65ed58 100644
--- a/drivers/iommu/arm/arm-smmu/qcom_iommu.c
+++ b/drivers/iommu/arm/arm-smmu/qcom_iommu.c
@@ -319,12 +319,10 @@ static int qcom_iommu_init_domain(struct iommu_domain *domain,
 	return ret;
 }
 
-static struct iommu_domain *qcom_iommu_domain_alloc(unsigned type)
+static struct iommu_domain *qcom_iommu_domain_alloc_paging(struct device *dev)
 {
 	struct qcom_iommu_domain *qcom_domain;
 
-	if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA)
-		return NULL;
 	/*
 	 * Allocate the domain and initialise some of its data structures.
 	 * We can't really do anything meaningful until we've added a
@@ -593,7 +591,7 @@ static int qcom_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
 static const struct iommu_ops qcom_iommu_ops = {
 	.identity_domain = &qcom_iommu_identity_domain,
 	.capable	= qcom_iommu_capable,
-	.domain_alloc	= qcom_iommu_domain_alloc,
+	.domain_alloc_paging = qcom_iommu_domain_alloc_paging,
 	.probe_device	= qcom_iommu_probe_device,
 	.device_group	= generic_device_group,
 	.of_xlate	= qcom_iommu_of_xlate,
diff --git a/drivers/iommu/exynos-iommu.c b/drivers/iommu/exynos-iommu.c
index 5e12b85dfe8705..d6dead2ed10c11 100644
--- a/drivers/iommu/exynos-iommu.c
+++ b/drivers/iommu/exynos-iommu.c
@@ -887,7 +887,7 @@ static inline void exynos_iommu_set_pte(sysmmu_pte_t *ent, sysmmu_pte_t val)
 				   DMA_TO_DEVICE);
 }
 
-static struct iommu_domain *exynos_iommu_domain_alloc(unsigned type)
+static struct iommu_domain *exynos_iommu_domain_alloc_paging(struct device *dev)
 {
 	struct exynos_iommu_domain *domain;
 	dma_addr_t handle;
@@ -896,9 +896,6 @@ static struct iommu_domain *exynos_iommu_domain_alloc(unsigned type)
 	/* Check if correct PTE offsets are initialized */
 	BUG_ON(PG_ENT_SHIFT < 0 || !dma_dev);
 
-	if (type != IOMMU_DOMAIN_DMA && type != IOMMU_DOMAIN_UNMANAGED)
-		return NULL;
-
 	domain = kzalloc(sizeof(*domain), GFP_KERNEL);
 	if (!domain)
 		return NULL;
@@ -1472,7 +1469,7 @@ static int exynos_iommu_of_xlate(struct device *dev,
 
 static const struct iommu_ops exynos_iommu_ops = {
 	.identity_domain = &exynos_identity_domain,
-	.domain_alloc = exynos_iommu_domain_alloc,
+	.domain_alloc_paging = exynos_iommu_domain_alloc_paging,
 	.device_group = generic_device_group,
 	.probe_device = exynos_iommu_probe_device,
 	.release_device = exynos_iommu_release_device,
diff --git a/drivers/iommu/ipmmu-vmsa.c b/drivers/iommu/ipmmu-vmsa.c
index de958e411a92e0..27d36347e0fced 100644
--- a/drivers/iommu/ipmmu-vmsa.c
+++ b/drivers/iommu/ipmmu-vmsa.c
@@ -566,13 +566,10 @@ static irqreturn_t ipmmu_irq(int irq, void *dev)
  * IOMMU Operations
  */
 
-static struct iommu_domain *ipmmu_domain_alloc(unsigned type)
+static struct iommu_domain *ipmmu_domain_alloc_paging(struct device *dev)
 {
 	struct ipmmu_vmsa_domain *domain;
 
-	if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA)
-		return NULL;
-
 	domain = kzalloc(sizeof(*domain), GFP_KERNEL);
 	if (!domain)
 		return NULL;
@@ -891,7 +888,7 @@ static struct iommu_group *ipmmu_find_group(struct device *dev)
 
 static const struct iommu_ops ipmmu_ops = {
 	.identity_domain = &ipmmu_iommu_identity_domain,
-	.domain_alloc = ipmmu_domain_alloc,
+	.domain_alloc_paging = ipmmu_domain_alloc_paging,
 	.probe_device = ipmmu_probe_device,
 	.release_device = ipmmu_release_device,
 	.probe_finalize = ipmmu_probe_finalize,
diff --git a/drivers/iommu/mtk_iommu.c b/drivers/iommu/mtk_iommu.c
index fdb7f5162b1d64..3590d3399add32 100644
--- a/drivers/iommu/mtk_iommu.c
+++ b/drivers/iommu/mtk_iommu.c
@@ -667,13 +667,10 @@ static int mtk_iommu_domain_finalise(struct mtk_iommu_domain *dom,
 	return 0;
 }
 
-static struct iommu_domain *mtk_iommu_domain_alloc(unsigned type)
+static struct iommu_domain *mtk_iommu_domain_alloc_paging(struct device *dev)
 {
 	struct mtk_iommu_domain *dom;
 
-	if (type != IOMMU_DOMAIN_DMA && type != IOMMU_DOMAIN_UNMANAGED)
-		return NULL;
-
 	dom = kzalloc(sizeof(*dom), GFP_KERNEL);
 	if (!dom)
 		return NULL;
@@ -995,7 +992,7 @@ static void mtk_iommu_get_resv_regions(struct device *dev,
 
 static const struct iommu_ops mtk_iommu_ops = {
 	.identity_domain = &mtk_iommu_identity_domain,
-	.domain_alloc	= mtk_iommu_domain_alloc,
+	.domain_alloc_paging = mtk_iommu_domain_alloc_paging,
 	.probe_device	= mtk_iommu_probe_device,
 	.release_device	= mtk_iommu_release_device,
 	.device_group	= mtk_iommu_device_group,
diff --git a/drivers/iommu/rockchip-iommu.c b/drivers/iommu/rockchip-iommu.c
index 818748a76e2469..64e32b3bcd209f 100644
--- a/drivers/iommu/rockchip-iommu.c
+++ b/drivers/iommu/rockchip-iommu.c
@@ -1071,13 +1071,10 @@ static int rk_iommu_attach_device(struct iommu_domain *domain,
 	return ret;
 }
 
-static struct iommu_domain *rk_iommu_domain_alloc(unsigned type)
+static struct iommu_domain *rk_iommu_domain_alloc_paging(struct device *dev)
 {
 	struct rk_iommu_domain *rk_domain;
 
-	if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA)
-		return NULL;
-
 	if (!dma_dev)
 		return NULL;
 
@@ -1200,7 +1197,7 @@ static int rk_iommu_of_xlate(struct device *dev,
 
 static const struct iommu_ops rk_iommu_ops = {
 	.identity_domain = &rk_identity_domain,
-	.domain_alloc = rk_iommu_domain_alloc,
+	.domain_alloc_paging = rk_iommu_domain_alloc_paging,
 	.probe_device = rk_iommu_probe_device,
 	.release_device = rk_iommu_release_device,
 	.device_group = rk_iommu_device_group,
diff --git a/drivers/iommu/sprd-iommu.c b/drivers/iommu/sprd-iommu.c
index 39e34fdeccda78..af68b3a2c123ab 100644
--- a/drivers/iommu/sprd-iommu.c
+++ b/drivers/iommu/sprd-iommu.c
@@ -133,13 +133,10 @@ sprd_iommu_pgt_size(struct iommu_domain *domain)
 		SPRD_IOMMU_PAGE_SHIFT) * sizeof(u32);
 }
 
-static struct iommu_domain *sprd_iommu_domain_alloc(unsigned int domain_type)
+static struct iommu_domain *sprd_iommu_domain_alloc_paging(struct device *dev)
 {
 	struct sprd_iommu_domain *dom;
 
-	if (domain_type != IOMMU_DOMAIN_DMA && domain_type != IOMMU_DOMAIN_UNMANAGED)
-		return NULL;
-
 	dom = kzalloc(sizeof(*dom), GFP_KERNEL);
 	if (!dom)
 		return NULL;
@@ -419,7 +416,7 @@ static int sprd_iommu_of_xlate(struct device *dev, struct of_phandle_args *args)
 
 
 static const struct iommu_ops sprd_iommu_ops = {
-	.domain_alloc	= sprd_iommu_domain_alloc,
+	.domain_alloc_paging = sprd_iommu_domain_alloc_paging,
 	.probe_device	= sprd_iommu_probe_device,
 	.device_group	= sprd_iommu_device_group,
 	.of_xlate	= sprd_iommu_of_xlate,
diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c
index 0bf08b120cf105..056832a367c2af 100644
--- a/drivers/iommu/sun50i-iommu.c
+++ b/drivers/iommu/sun50i-iommu.c
@@ -667,14 +667,11 @@ static phys_addr_t sun50i_iommu_iova_to_phys(struct iommu_domain *domain,
 		sun50i_iova_get_page_offset(iova);
 }
 
-static struct iommu_domain *sun50i_iommu_domain_alloc(unsigned type)
+static struct iommu_domain *
+sun50i_iommu_domain_alloc_paging(struct device *paging)
 {
 	struct sun50i_iommu_domain *sun50i_domain;
 
-	if (type != IOMMU_DOMAIN_DMA &&
-	    type != IOMMU_DOMAIN_UNMANAGED)
-		return NULL;
-
 	sun50i_domain = kzalloc(sizeof(*sun50i_domain), GFP_KERNEL);
 	if (!sun50i_domain)
 		return NULL;
@@ -840,7 +837,7 @@ static const struct iommu_ops sun50i_iommu_ops = {
 	.identity_domain = &sun50i_iommu_identity_domain,
 	.pgsize_bitmap	= SZ_4K,
 	.device_group	= sun50i_iommu_device_group,
-	.domain_alloc	= sun50i_iommu_domain_alloc,
+	.domain_alloc_paging = sun50i_iommu_domain_alloc_paging,
 	.of_xlate	= sun50i_iommu_of_xlate,
 	.probe_device	= sun50i_iommu_probe_device,
 	.default_domain_ops = &(const struct iommu_domain_ops) {
diff --git a/drivers/iommu/tegra-smmu.c b/drivers/iommu/tegra-smmu.c
index 6cba034905edbf..69c40c191ce4f0 100644
--- a/drivers/iommu/tegra-smmu.c
+++ b/drivers/iommu/tegra-smmu.c
@@ -272,13 +272,10 @@ static void tegra_smmu_free_asid(struct tegra_smmu *smmu, unsigned int id)
 	clear_bit(id, smmu->asids);
 }
 
-static struct iommu_domain *tegra_smmu_domain_alloc(unsigned type)
+static struct iommu_domain *tegra_smmu_domain_alloc_paging(struct device *dev)
 {
 	struct tegra_smmu_as *as;
 
-	if (type != IOMMU_DOMAIN_UNMANAGED && type != IOMMU_DOMAIN_DMA)
-		return NULL;
-
 	as = kzalloc(sizeof(*as), GFP_KERNEL);
 	if (!as)
 		return NULL;
@@ -997,7 +994,7 @@ static const struct iommu_ops tegra_smmu_ops = {
 	.default_domain = &tegra_smmu_identity_domain,
 	.identity_domain = &tegra_smmu_identity_domain,
 	.def_domain_type = &tegra_smmu_def_domain_type,
-	.domain_alloc = tegra_smmu_domain_alloc,
+	.domain_alloc_paging = tegra_smmu_domain_alloc_paging,
 	.probe_device = tegra_smmu_probe_device,
 	.device_group = tegra_smmu_device_group,
 	.of_xlate = tegra_smmu_of_xlate,
-- 
2.40.1