diff options
Diffstat (limited to 'arch/arm/mm/dma-mapping.c')
| -rw-r--r-- | arch/arm/mm/dma-mapping.c | 26 |
1 files changed, 18 insertions, 8 deletions
diff --git a/arch/arm/mm/dma-mapping.c b/arch/arm/mm/dma-mapping.c index 330061d3d081..b58d8e0d9ed1 100644 --- a/arch/arm/mm/dma-mapping.c +++ b/arch/arm/mm/dma-mapping.c @@ -29,6 +29,7 @@ #include <linux/sizes.h> #include <linux/cma.h> #include <linux/msm_dma_iommu_mapping.h> +#include <linux/dma-mapping-fast.h> #include <asm/memory.h> #include <asm/highmem.h> @@ -1019,7 +1020,7 @@ static void __dma_page_dev_to_cpu(struct page *page, unsigned long off, int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); struct scatterlist *s; int i, j; @@ -1053,7 +1054,7 @@ int arm_dma_map_sg(struct device *dev, struct scatterlist *sg, int nents, void arm_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir, struct dma_attrs *attrs) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); struct scatterlist *s; int i; @@ -1072,7 +1073,7 @@ void arm_dma_unmap_sg(struct device *dev, struct scatterlist *sg, int nents, void arm_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); struct scatterlist *s; int i; @@ -1091,7 +1092,7 @@ void arm_dma_sync_sg_for_cpu(struct device *dev, struct scatterlist *sg, void arm_dma_sync_sg_for_device(struct device *dev, struct scatterlist *sg, int nents, enum dma_data_direction dir) { - struct dma_map_ops *ops = get_dma_ops(dev); + const struct dma_map_ops *ops = get_dma_ops(dev); struct scatterlist *s; int i; @@ -1988,7 +1989,7 @@ static void arm_iommu_sync_single_for_device(struct device *dev, __dma_page_cpu_to_dev(page, offset, size, dir); } -struct dma_map_ops iommu_ops = { +const struct dma_map_ops iommu_ops = { .alloc = arm_iommu_alloc_attrs, .free = arm_iommu_free_attrs, .mmap = arm_iommu_mmap_attrs, @@ -2007,7 +2008,7 @@ struct dma_map_ops iommu_ops = { .set_dma_mask = arm_dma_set_mask, }; -struct dma_map_ops iommu_coherent_ops = { +const struct dma_map_ops iommu_coherent_ops = { .alloc = arm_iommu_alloc_attrs, .free = arm_iommu_free_attrs, .mmap = arm_iommu_mmap_attrs, @@ -2166,6 +2167,11 @@ int arm_iommu_attach_device(struct device *dev, { int err; int s1_bypass = 0; + int is_fast = 0; + + iommu_domain_get_attr(mapping->domain, DOMAIN_ATTR_FAST, &is_fast); + if (is_fast) + return fast_smmu_attach_device(dev, mapping); err = __arm_iommu_attach_device(dev, mapping); if (err) @@ -2182,6 +2188,7 @@ EXPORT_SYMBOL_GPL(arm_iommu_attach_device); static void __arm_iommu_detach_device(struct device *dev) { struct dma_iommu_mapping *mapping; + int is_fast; mapping = to_dma_iommu_mapping(dev); if (!mapping) { @@ -2191,6 +2198,9 @@ static void __arm_iommu_detach_device(struct device *dev) if (msm_dma_unmap_all_for_dev(dev)) dev_warn(dev, "IOMMU detach with outstanding mappings\n"); + iommu_domain_get_attr(mapping->domain, DOMAIN_ATTR_FAST, &is_fast); + if (is_fast) + return fast_smmu_detach_device(dev, mapping); iommu_detach_device(mapping->domain, dev); kref_put(&mapping->kref, release_iommu_mapping); @@ -2226,7 +2236,7 @@ void arm_iommu_detach_device(struct device *dev) } EXPORT_SYMBOL_GPL(arm_iommu_detach_device); -static struct dma_map_ops *arm_get_iommu_dma_map_ops(bool coherent) +static const struct dma_map_ops *arm_get_iommu_dma_map_ops(bool coherent) { return coherent ? &iommu_coherent_ops : &iommu_ops; } @@ -2289,7 +2299,7 @@ static struct dma_map_ops *arm_get_dma_map_ops(bool coherent) void arch_setup_dma_ops(struct device *dev, u64 dma_base, u64 size, struct iommu_ops *iommu, bool coherent) { - struct dma_map_ops *dma_ops; + const struct dma_map_ops *dma_ops; dev->archdata.dma_coherent = coherent; if (arm_setup_iommu_dma_ops(dev, dma_base, size, iommu)) |