1 /* Glue code to lib/swiotlb.c */
5 #include <linux/cache.h>
6 #include <linux/module.h>
7 #include <linux/dma-mapping.h>
9 #include <asm/swiotlb.h>
11 #include <asm/iommu.h>
12 #include <asm/machvec.h>
14 int swiotlb __read_mostly
;
15 EXPORT_SYMBOL(swiotlb
);
17 static void *ia64_swiotlb_alloc_coherent(struct device
*dev
, size_t size
,
18 dma_addr_t
*dma_handle
, gfp_t gfp
,
21 if (dev
->coherent_dma_mask
!= DMA_BIT_MASK(64))
23 return swiotlb_alloc_coherent(dev
, size
, dma_handle
, gfp
);
26 static void ia64_swiotlb_free_coherent(struct device
*dev
, size_t size
,
27 void *vaddr
, dma_addr_t dma_addr
,
30 swiotlb_free_coherent(dev
, size
, vaddr
, dma_addr
);
33 const struct dma_map_ops swiotlb_dma_ops
= {
34 .alloc
= ia64_swiotlb_alloc_coherent
,
35 .free
= ia64_swiotlb_free_coherent
,
36 .map_page
= swiotlb_map_page
,
37 .unmap_page
= swiotlb_unmap_page
,
38 .map_sg
= swiotlb_map_sg_attrs
,
39 .unmap_sg
= swiotlb_unmap_sg_attrs
,
40 .sync_single_for_cpu
= swiotlb_sync_single_for_cpu
,
41 .sync_single_for_device
= swiotlb_sync_single_for_device
,
42 .sync_sg_for_cpu
= swiotlb_sync_sg_for_cpu
,
43 .sync_sg_for_device
= swiotlb_sync_sg_for_device
,
44 .dma_supported
= swiotlb_dma_supported
,
45 .mapping_error
= swiotlb_dma_mapping_error
,
48 void __init
swiotlb_dma_init(void)
50 dma_ops
= &swiotlb_dma_ops
;
54 void __init
pci_swiotlb_init(void)
56 if (!iommu_detected
) {
57 #ifdef CONFIG_IA64_GENERIC
59 printk(KERN_INFO
"PCI-DMA: Re-initialize machine vector.\n");
62 dma_ops
= &swiotlb_dma_ops
;
64 panic("Unable to find Intel IOMMU");