x86: nuke a ton of unused exports
[linux-2.6.git] / arch / x86 / kernel / pci-swiotlb_64.c
1 /* Glue code to lib/swiotlb.c */
2
3 #include <linux/pci.h>
4 #include <linux/cache.h>
5 #include <linux/module.h>
6 #include <linux/dma-mapping.h>
7
8 #include <asm/gart.h>
9 #include <asm/swiotlb.h>
10 #include <asm/dma.h>
11
12 int swiotlb __read_mostly;
13
14 const struct dma_mapping_ops swiotlb_dma_ops = {
15         .mapping_error = swiotlb_dma_mapping_error,
16         .alloc_coherent = swiotlb_alloc_coherent,
17         .free_coherent = swiotlb_free_coherent,
18         .map_single = swiotlb_map_single,
19         .unmap_single = swiotlb_unmap_single,
20         .sync_single_for_cpu = swiotlb_sync_single_for_cpu,
21         .sync_single_for_device = swiotlb_sync_single_for_device,
22         .sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu,
23         .sync_single_range_for_device = swiotlb_sync_single_range_for_device,
24         .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu,
25         .sync_sg_for_device = swiotlb_sync_sg_for_device,
26         .map_sg = swiotlb_map_sg,
27         .unmap_sg = swiotlb_unmap_sg,
28         .dma_supported = NULL,
29 };
30
31 void __init pci_swiotlb_init(void)
32 {
33         /* don't initialize swiotlb if iommu=off (no_iommu=1) */
34         if (!iommu_detected && !no_iommu && end_pfn > MAX_DMA32_PFN)
35                swiotlb = 1;
36         if (swiotlb_force)
37                 swiotlb = 1;
38         if (swiotlb) {
39                 printk(KERN_INFO "PCI-DMA: Using software bounce buffering for IO (SWIOTLB)\n");
40                 swiotlb_init();
41                 dma_ops = &swiotlb_dma_ops;
42         }
43 }