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Commit b2b20695 authored by Christoph Hellwig's avatar Christoph Hellwig
Browse files

tile: use generic swiotlb_ops 



These are identical to the tile ops, and would also support CMA
if enabled on tile.

Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
Acked-by: default avatarChristian König <christian.koenig@amd.com>
parent d3ce48ea

arch/tile/Kconfig

+1 −0
Original line number Diff line number Diff line
@@ -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

arch/tile/kernel/pci-dma.c

+3 −33
Original line number Diff line number Diff line
@@ -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;