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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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f6d302e33d
Octeon and Loongson share exactly the same code, move it into a common implementation, and use that implementation directly from get_arch_dma_ops. Also provide the expected dma-direct.h helpers directly instead of delegating to platform dma-coherence.h headers. Signed-off-by: Christoph Hellwig <hch@lst.de> Patchwork: https://patchwork.linux-mips.org/patch/19534/ Signed-off-by: Paul Burton <paul.burton@mips.com> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: David Daney <david.daney@cavium.com> Cc: Kevin Cernekee <cernekee@gmail.com> Cc: Jiaxun Yang <jiaxun.yang@flygoat.com> Cc: Tom Bogendoerfer <tsbogend@alpha.franken.de> Cc: Huacai Chen <chenhc@lemote.com> Cc: iommu@lists.linux-foundation.org Cc: linux-mips@linux-mips.org
62 lines
1.8 KiB
C
62 lines
1.8 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#include <linux/dma-mapping.h>
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#include <linux/swiotlb.h>
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static void *mips_swiotlb_alloc(struct device *dev, size_t size,
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dma_addr_t *dma_handle, gfp_t gfp, unsigned long attrs)
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{
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void *ret = swiotlb_alloc(dev, size, dma_handle, gfp, attrs);
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mb();
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return ret;
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}
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static dma_addr_t mips_swiotlb_map_page(struct device *dev,
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struct page *page, unsigned long offset, size_t size,
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enum dma_data_direction dir, unsigned long attrs)
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{
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dma_addr_t daddr = swiotlb_map_page(dev, page, offset, size,
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dir, attrs);
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mb();
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return daddr;
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}
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static int mips_swiotlb_map_sg(struct device *dev, struct scatterlist *sg,
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int nents, enum dma_data_direction dir, unsigned long attrs)
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{
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int r = swiotlb_map_sg_attrs(dev, sg, nents, dir, attrs);
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mb();
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return r;
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}
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static void mips_swiotlb_sync_single_for_device(struct device *dev,
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dma_addr_t dma_handle, size_t size, enum dma_data_direction dir)
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{
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swiotlb_sync_single_for_device(dev, dma_handle, size, dir);
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mb();
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}
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static void mips_swiotlb_sync_sg_for_device(struct device *dev,
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struct scatterlist *sg, int nents, enum dma_data_direction dir)
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{
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swiotlb_sync_sg_for_device(dev, sg, nents, dir);
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mb();
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}
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const struct dma_map_ops mips_swiotlb_ops = {
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.alloc = mips_swiotlb_alloc,
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.free = swiotlb_free,
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.map_page = mips_swiotlb_map_page,
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.unmap_page = swiotlb_unmap_page,
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.map_sg = mips_swiotlb_map_sg,
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.unmap_sg = swiotlb_unmap_sg_attrs,
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.sync_single_for_cpu = swiotlb_sync_single_for_cpu,
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.sync_single_for_device = mips_swiotlb_sync_single_for_device,
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.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
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.sync_sg_for_device = mips_swiotlb_sync_sg_for_device,
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.mapping_error = swiotlb_dma_mapping_error,
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.dma_supported = swiotlb_dma_supported,
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};
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EXPORT_SYMBOL(mips_swiotlb_ops);
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