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authorChristoph Hellwig <hch@lst.de>2017-12-24 15:14:03 +0100
committerChristoph Hellwig <hch@lst.de>2018-01-15 09:35:58 +0100
commitb2b206957ae7988e7d77a92f89453f5b93e5ddd0 (patch)
tree3a45b529d5770c71fc15571975ba693ce8cdea85 /arch/tile
parentd3ce48eafc643efcac1db9d4ec1f3479e0b41065 (diff)
tile: use generic swiotlb_ops
These are identical to the tile ops, and would also support CMA if enabled on tile. Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Christian K├Ânig <christian.koenig@amd.com>
Diffstat (limited to 'arch/tile')
-rw-r--r--arch/tile/Kconfig1
-rw-r--r--arch/tile/kernel/pci-dma.c36
2 files changed, 4 insertions, 33 deletions
diff --git a/arch/tile/Kconfig b/arch/tile/Kconfig
index 30c586686f29..ef9d403cbbe4 100644
--- a/arch/tile/Kconfig
+++ b/arch/tile/Kconfig
@@ -261,6 +261,7 @@ config NEED_SG_DMA_LENGTH
config SWIOTLB
bool
default TILEGX
+ select DMA_DIRECT_OPS
select IOMMU_HELPER
select NEED_SG_DMA_LENGTH
select ARCH_HAS_DMA_SET_COHERENT_MASK
diff --git a/arch/tile/kernel/pci-dma.c b/arch/tile/kernel/pci-dma.c
index a267fa740048..6a1efe5543fa 100644
--- a/arch/tile/kernel/pci-dma.c
+++ b/arch/tile/kernel/pci-dma.c
@@ -509,39 +509,9 @@ EXPORT_SYMBOL(gx_pci_dma_map_ops);
/* PCI DMA mapping functions for legacy PCI devices */
#ifdef CONFIG_SWIOTLB
-static void *tile_swiotlb_alloc_coherent(struct device *dev, size_t size,
- dma_addr_t *dma_handle, gfp_t gfp,
- unsigned long attrs)
-{
- gfp |= GFP_DMA32;
- return swiotlb_alloc_coherent(dev, size, dma_handle, gfp);
-}
-
-static void tile_swiotlb_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_addr,
- unsigned long attrs)
-{
- swiotlb_free_coherent(dev, size, vaddr, dma_addr);
-}
-
-static const struct dma_map_ops pci_swiotlb_dma_ops = {
- .alloc = tile_swiotlb_alloc_coherent,
- .free = tile_swiotlb_free_coherent,
- .map_page = swiotlb_map_page,
- .unmap_page = swiotlb_unmap_page,
- .map_sg = swiotlb_map_sg_attrs,
- .unmap_sg = swiotlb_unmap_sg_attrs,
- .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
- .sync_single_for_device = swiotlb_sync_single_for_device,
- .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
- .sync_sg_for_device = swiotlb_sync_sg_for_device,
- .dma_supported = swiotlb_dma_supported,
- .mapping_error = swiotlb_dma_mapping_error,
-};
-
static const struct dma_map_ops pci_hybrid_dma_ops = {
- .alloc = tile_swiotlb_alloc_coherent,
- .free = tile_swiotlb_free_coherent,
+ .alloc = swiotlb_alloc,
+ .free = swiotlb_free,
.map_page = tile_pci_dma_map_page,
.unmap_page = tile_pci_dma_unmap_page,
.map_sg = tile_pci_dma_map_sg,
@@ -552,7 +522,7 @@ static const struct dma_map_ops pci_hybrid_dma_ops = {
.sync_sg_for_device = tile_pci_dma_sync_sg_for_device,
};
-const struct dma_map_ops *gx_legacy_pci_dma_map_ops = &pci_swiotlb_dma_ops;
+const struct dma_map_ops *gx_legacy_pci_dma_map_ops = &swiotlb_dma_ops;
const struct dma_map_ops *gx_hybrid_pci_dma_map_ops = &pci_hybrid_dma_ops;
#else
const struct dma_map_ops *gx_legacy_pci_dma_map_ops;

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