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ARM: 9417/1: dma-mapping: Pass device to arm_iommu_create_mapping()

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All users of ARM IOMMU mappings create them for a particular device, so
change the interface to accept the device rather than forcing a vague
indirection through a bus type. This prepares for making a similar
change to iommu_domain_alloc() itself.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Vasant Hegde <vasant.hegde@amd.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jeff Johnson <quic_jjohnson@quicinc.com>
Signed-off-by: Jason Gunthorpe <jgg@ziepe.ca>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Jason Gunthorpe 2024-09-04 13:36:02 +01:00 committed by Russell King (Oracle)
parent f7f8b433ac
commit 9e8354b399
6 changed files with 9 additions and 11 deletions
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2
arch/arm/include/asm/dma-iommu.h
View file

@ -24,7 +24,7 @@ struct dma_iommu_mapping {
};
struct dma_iommu_mapping *
arm_iommu_create_mapping(const struct bus_type *bus, dma_addr_t base, u64 size);
arm_iommu_create_mapping(struct device *dev, dma_addr_t base, u64 size);
void arm_iommu_release_mapping(struct dma_iommu_mapping *mapping);

8
arch/arm/mm/dma-mapping.c
View file

@ -1532,7 +1532,7 @@ static const struct dma_map_ops iommu_ops = {
/**
* arm_iommu_create_mapping
* @bus: pointer to the bus holding the client device (for IOMMU calls)
* @dev: pointer to the client device (for IOMMU calls)
* @base: start address of the valid IO address space
* @size: maximum size of the valid IO address space
*
@ -1544,7 +1544,7 @@ static const struct dma_map_ops iommu_ops = {
* arm_iommu_attach_device function.
*/
struct dma_iommu_mapping *
arm_iommu_create_mapping(const struct bus_type *bus, dma_addr_t base, u64 size)
arm_iommu_create_mapping(struct device *dev, dma_addr_t base, u64 size)
{
unsigned int bits = size >> PAGE_SHIFT;
unsigned int bitmap_size = BITS_TO_LONGS(bits) * sizeof(long);
@ -1585,7 +1585,7 @@ arm_iommu_create_mapping(const struct bus_type *bus, dma_addr_t base, u64 size)
spin_lock_init(&mapping->lock);
mapping->domain = iommu_domain_alloc(bus);
mapping->domain = iommu_domain_alloc(dev->bus);
if (!mapping->domain)
goto err4;
@ -1718,7 +1718,7 @@ static void arm_setup_iommu_dma_ops(struct device *dev)
dma_base = dma_range_map_min(dev->dma_range_map);
size = dma_range_map_max(dev->dma_range_map) - dma_base;
}
mapping = arm_iommu_create_mapping(dev->bus, dma_base, size);
mapping = arm_iommu_create_mapping(dev, dma_base, size);
if (IS_ERR(mapping)) {
pr_warn("Failed to create %llu-byte IOMMU mapping for device %s\n",
size, dev_name(dev));

2
drivers/gpu/drm/exynos/exynos_drm_dma.c
View file

@ -110,7 +110,7 @@ int exynos_drm_register_dma(struct drm_device *drm, struct device *dev,
void *mapping = NULL;
if (IS_ENABLED(CONFIG_ARM_DMA_USE_IOMMU))
mapping = arm_iommu_create_mapping(&platform_bus_type,
mapping = arm_iommu_create_mapping(dev,
EXYNOS_DEV_ADDR_START, EXYNOS_DEV_ADDR_SIZE);
else if (IS_ENABLED(CONFIG_IOMMU_DMA))
mapping = iommu_get_domain_for_dev(priv->dma_dev);

3
drivers/iommu/ipmmu-vmsa.c
View file

@ -804,8 +804,7 @@ static int ipmmu_init_arm_mapping(struct device *dev)
if (!mmu->mapping) {
struct dma_iommu_mapping *mapping;
mapping = arm_iommu_create_mapping(&platform_bus_type,
SZ_1G, SZ_2G);
mapping = arm_iommu_create_mapping(dev, SZ_1G, SZ_2G);
if (IS_ERR(mapping)) {
dev_err(mmu->dev, "failed to create ARM IOMMU mapping\n");
ret = PTR_ERR(mapping);

3
drivers/iommu/mtk_iommu_v1.c
View file

@ -433,8 +433,7 @@ static int mtk_iommu_v1_create_mapping(struct device *dev,
mtk_mapping = data->mapping;
if (!mtk_mapping) {
/* MTK iommu support 4GB iova address space. */
mtk_mapping = arm_iommu_create_mapping(&platform_bus_type,
0, 1ULL << 32);
mtk_mapping = arm_iommu_create_mapping(dev, 0, 1ULL << 32);
if (IS_ERR(mtk_mapping))
return PTR_ERR(mtk_mapping);

2
drivers/media/platform/ti/omap3isp/isp.c
View file

@ -1965,7 +1965,7 @@ static int isp_attach_iommu(struct isp_device *isp)
* Create the ARM mapping, used by the ARM DMA mapping core to allocate
* VAs. This will allocate a corresponding IOMMU domain.
*/
mapping = arm_iommu_create_mapping(&platform_bus_type, SZ_1G, SZ_2G);
mapping = arm_iommu_create_mapping(isp->dev, SZ_1G, SZ_2G);
if (IS_ERR(mapping)) {
dev_err(isp->dev, "failed to create ARM IOMMU mapping\n");
return PTR_ERR(mapping);