f98eee8ea9
This adds swiotlb_map_page and swiotlb_unmap_page to lib/swiotlb.c and remove IA64 and X86's swiotlb_map_page and swiotlb_unmap_page. This also removes unnecessary swiotlb_map_single, swiotlb_map_single_attrs, swiotlb_unmap_single and swiotlb_unmap_single_attrs. 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>
56 lines
1.4 KiB
C
56 lines
1.4 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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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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