| /* Glue code to lib/swiotlb.c */ |
| |
| #include <linux/pci.h> |
| #include <linux/cache.h> |
| #include <linux/module.h> |
| #include <linux/dma-mapping.h> |
| |
| #include <asm/swiotlb.h> |
| #include <asm/dma.h> |
| #include <asm/iommu.h> |
| #include <asm/machvec.h> |
| |
| int swiotlb __read_mostly; |
| EXPORT_SYMBOL(swiotlb); |
| |
| static void *ia64_swiotlb_alloc_coherent(struct device *dev, size_t size, |
| dma_addr_t *dma_handle, gfp_t gfp) |
| { |
| if (dev->coherent_dma_mask != DMA_BIT_MASK(64)) |
| gfp |= GFP_DMA; |
| return swiotlb_alloc_coherent(dev, size, dma_handle, gfp); |
| } |
| |
| struct dma_map_ops swiotlb_dma_ops = { |
| .alloc_coherent = ia64_swiotlb_alloc_coherent, |
| .free_coherent = swiotlb_free_coherent, |
| .map_page = swiotlb_map_page, |
| .unmap_page = swiotlb_unmap_page, |
| .map_sg = swiotlb_map_sg_attrs, |
| .unmap_sg = swiotlb_unmap_sg_attrs, |
| .sync_single_for_cpu = swiotlb_sync_single_for_cpu, |
| .sync_single_for_device = swiotlb_sync_single_for_device, |
| .sync_single_range_for_cpu = swiotlb_sync_single_range_for_cpu, |
| .sync_single_range_for_device = swiotlb_sync_single_range_for_device, |
| .sync_sg_for_cpu = swiotlb_sync_sg_for_cpu, |
| .sync_sg_for_device = swiotlb_sync_sg_for_device, |
| .dma_supported = swiotlb_dma_supported, |
| .mapping_error = swiotlb_dma_mapping_error, |
| }; |
| |
| void __init swiotlb_dma_init(void) |
| { |
| dma_ops = &swiotlb_dma_ops; |
| swiotlb_init(1); |
| } |
| |
| void __init pci_swiotlb_init(void) |
| { |
| if (!iommu_detected) { |
| #ifdef CONFIG_IA64_GENERIC |
| swiotlb = 1; |
| printk(KERN_INFO "PCI-DMA: Re-initialize machine vector.\n"); |
| machvec_init("dig"); |
| swiotlb_init(1); |
| dma_ops = &swiotlb_dma_ops; |
| #else |
| panic("Unable to find Intel IOMMU"); |
| #endif |
| } |
| } |