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authorLinus Torvalds <torvalds@linux-foundation.org>2018-04-02 17:18:45 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2018-04-02 17:18:45 -0700
commit2fcd2b306aa80771e053275ed74b2dfe7e3d1434 (patch)
treeb19f4e3e9552eab00056c833650e692192fe8f5c /arch/x86/kernel/pci-swiotlb.c
parentce6eba3dba366b607c0a363c7cdbd4ee8fcc6434 (diff)
parente89f5b37015309a8bdf0b21d08007580b92f92a4 (diff)
downloadlinux-2fcd2b306aa80771e053275ed74b2dfe7e3d1434.tar.bz2
Merge branch 'x86-dma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 dma mapping updates from Ingo Molnar: "This tree, by Christoph Hellwig, switches over the x86 architecture to the generic dma-direct and swiotlb code, and also unifies more of the dma-direct code between architectures. The now unused x86-only primitives are removed" * 'x86-dma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: dma-mapping: Don't clear GFP_ZERO in dma_alloc_attrs swiotlb: Make swiotlb_{alloc,free}_buffer depend on CONFIG_DMA_DIRECT_OPS dma/swiotlb: Remove swiotlb_{alloc,free}_coherent() dma/direct: Handle force decryption for DMA coherent buffers in common code dma/direct: Handle the memory encryption bit in common code dma/swiotlb: Remove swiotlb_set_mem_attributes() set_memory.h: Provide set_memory_{en,de}crypted() stubs x86/dma: Remove dma_alloc_coherent_gfp_flags() iommu/intel-iommu: Enable CONFIG_DMA_DIRECT_OPS=y and clean up intel_{alloc,free}_coherent() iommu/amd_iommu: Use CONFIG_DMA_DIRECT_OPS=y and dma_direct_{alloc,free}() x86/dma/amd_gart: Use dma_direct_{alloc,free}() x86/dma/amd_gart: Look at dev->coherent_dma_mask instead of GFP_DMA x86/dma: Use generic swiotlb_ops x86/dma: Use DMA-direct (CONFIG_DMA_DIRECT_OPS=y) x86/dma: Remove dma_alloc_coherent_mask()
Diffstat (limited to 'arch/x86/kernel/pci-swiotlb.c')
-rw-r--r--arch/x86/kernel/pci-swiotlb.c48
1 files changed, 1 insertions, 47 deletions
diff --git a/arch/x86/kernel/pci-swiotlb.c b/arch/x86/kernel/pci-swiotlb.c
index 0ee0f8f34251..661583662430 100644
--- a/arch/x86/kernel/pci-swiotlb.c
+++ b/arch/x86/kernel/pci-swiotlb.c
@@ -17,52 +17,6 @@
int swiotlb __read_mostly;
-void *x86_swiotlb_alloc_coherent(struct device *hwdev, size_t size,
- dma_addr_t *dma_handle, gfp_t flags,
- unsigned long attrs)
-{
- void *vaddr;
-
- /*
- * Don't print a warning when the first allocation attempt fails.
- * swiotlb_alloc_coherent() will print a warning when the DMA
- * memory allocation ultimately failed.
- */
- flags |= __GFP_NOWARN;
-
- vaddr = dma_generic_alloc_coherent(hwdev, size, dma_handle, flags,
- attrs);
- if (vaddr)
- return vaddr;
-
- return swiotlb_alloc_coherent(hwdev, size, dma_handle, flags);
-}
-
-void x86_swiotlb_free_coherent(struct device *dev, size_t size,
- void *vaddr, dma_addr_t dma_addr,
- unsigned long attrs)
-{
- if (is_swiotlb_buffer(dma_to_phys(dev, dma_addr)))
- swiotlb_free_coherent(dev, size, vaddr, dma_addr);
- else
- dma_generic_free_coherent(dev, size, vaddr, dma_addr, attrs);
-}
-
-static const struct dma_map_ops x86_swiotlb_dma_ops = {
- .mapping_error = swiotlb_dma_mapping_error,
- .alloc = x86_swiotlb_alloc_coherent,
- .free = x86_swiotlb_free_coherent,
- .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,
- .map_sg = swiotlb_map_sg_attrs,
- .unmap_sg = swiotlb_unmap_sg_attrs,
- .map_page = swiotlb_map_page,
- .unmap_page = swiotlb_unmap_page,
- .dma_supported = NULL,
-};
-
/*
* pci_swiotlb_detect_override - set swiotlb to 1 if necessary
*
@@ -112,7 +66,7 @@ void __init pci_swiotlb_init(void)
{
if (swiotlb) {
swiotlb_init(0);
- dma_ops = &x86_swiotlb_dma_ops;
+ dma_ops = &swiotlb_dma_ops;
}
}