pci-dma.c (c82e4417ace9a3a4dddf3332379c771c41040040) pci-dma.c (4d9b977ca674dd40cfc1409a75cb73fca2cee423)
1/*
2 * Dynamic DMA mapping support.
3 */
4
5#include <linux/types.h>
6#include <linux/mm.h>
7#include <linux/string.h>
8#include <linux/pci.h>

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36 be probably a smaller DMA mask, but this is bug-to-bug compatible
37 to i386. */
38struct device fallback_dev = {
39 .bus_id = "fallback device",
40 .coherent_dma_mask = DMA_32BIT_MASK,
41 .dma_mask = &fallback_dev.coherent_dma_mask,
42};
43
1/*
2 * Dynamic DMA mapping support.
3 */
4
5#include <linux/types.h>
6#include <linux/mm.h>
7#include <linux/string.h>
8#include <linux/pci.h>

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36 be probably a smaller DMA mask, but this is bug-to-bug compatible
37 to i386. */
38struct device fallback_dev = {
39 .bus_id = "fallback device",
40 .coherent_dma_mask = DMA_32BIT_MASK,
41 .dma_mask = &fallback_dev.coherent_dma_mask,
42};
43
44extern struct dma_mapping_ops vtd_dma_ops;
45
44void __init pci_iommu_alloc(void)
45{
46void __init pci_iommu_alloc(void)
47{
48 dma_ops = &vtd_dma_ops;
46 /*
47 * The order of these functions is important for
48 * fall-back/fail-over reasons
49 */
50 detect_intel_iommu();
51
52#ifdef CONFIG_SWIOTLB
53 pci_swiotlb_init();

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71}
72
73void __init
74iommu_dma_init(void)
75{
76 return;
77}
78
49 /*
50 * The order of these functions is important for
51 * fall-back/fail-over reasons
52 */
53 detect_intel_iommu();
54
55#ifdef CONFIG_SWIOTLB
56 pci_swiotlb_init();

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74}
75
76void __init
77iommu_dma_init(void)
78{
79 return;
80}
81
79struct dma_mapping_ops *dma_ops;
80EXPORT_SYMBOL(dma_ops);
81
82int iommu_dma_supported(struct device *dev, u64 mask)
83{
84 struct dma_mapping_ops *ops = get_dma_ops(dev);
85
86 if (ops->dma_supported_op)
87 return ops->dma_supported_op(dev, mask);
88
89 /* Copied from i386. Doesn't make much sense, because it will

--- 27 unchanged lines hidden --- 		82int iommu_dma_supported(struct device *dev, u64 mask)
83{
84 struct dma_mapping_ops *ops = get_dma_ops(dev);
85
86 if (ops->dma_supported_op)
87 return ops->dma_supported_op(dev, mask);
88
89 /* Copied from i386. Doesn't make much sense, because it will

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