160c1d8e40
This converts X86 and IA64 to use include/linux/dma-mapping.h. It's a bit large but pretty boring. The major change for X86 is converting 'int dir' to 'enum dma_data_direction dir' in DMA mapping operations. The major changes for IA64 is using map_page and unmap_page instead of map_single and unmap_single. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/* Glue code to lib/swiotlb.c */
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#include <linux/pci.h>
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#include <linux/cache.h>
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#include <linux/module.h>
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#include <linux/dma-mapping.h>
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#include <asm/swiotlb.h>
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#include <asm/dma.h>
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#include <asm/iommu.h>
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#include <asm/machvec.h>
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int swiotlb __read_mostly;
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EXPORT_SYMBOL(swiotlb);
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/* Set this to 1 if there is a HW IOMMU in the system */
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int iommu_detected __read_mostly;
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static dma_addr_t swiotlb_map_page(struct device *dev, struct page *page,
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unsigned long offset, size_t size,
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enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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return swiotlb_map_single_attrs(dev, page_address(page) + offset, size,
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dir, attrs);
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}
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static void swiotlb_unmap_page(struct device *dev, dma_addr_t dma_handle,
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size_t size, enum dma_data_direction dir,
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struct dma_attrs *attrs)
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{
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swiotlb_unmap_single_attrs(dev, dma_handle, size, dir, attrs);
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}
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struct dma_map_ops swiotlb_dma_ops = {
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.alloc_coherent = swiotlb_alloc_coherent,
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.free_coherent = swiotlb_free_coherent,
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.map_page = swiotlb_map_page,
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.unmap_page = swiotlb_unmap_page,
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.map_sg = swiotlb_map_sg_attrs,
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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 = swiotlb_sync_single_for_device,
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.sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
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.sync_single_range_for_device = swiotlb_sync_single_range_for_device,
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.sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
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.sync_sg_for_device = swiotlb_sync_sg_for_device,
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.dma_supported = swiotlb_dma_supported,
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.mapping_error = swiotlb_dma_mapping_error,
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};
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void swiotlb_dma_init(void)
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{
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dma_ops = &swiotlb_dma_ops;
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swiotlb_init();
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}
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void __init pci_swiotlb_init(void)
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{
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if (!iommu_detected) {
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#ifdef CONFIG_IA64_GENERIC
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swiotlb = 1;
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printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n");
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machvec_init("dig");
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swiotlb_init();
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dma_ops = &swiotlb_dma_ops;
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#else
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panic("Unable to find Intel IOMMU");
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#endif
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}
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}
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