projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 83862ccf SS |
1 | #include <linux/bootmem.h> |
| 2 | #include <linux/gfp.h> | |
| 3 | #include <linux/export.h> | |
| 4 | #include <linux/slab.h> | |
| 5 | #include <linux/types.h> | |
| 6 | #include <linux/dma-mapping.h> | |
| 7 | #include <linux/vmalloc.h> | |
| 8 | #include <linux/swiotlb.h> | |
| 9 | ||
| 10 | #include <xen/xen.h> | |
| 11 | #include <xen/interface/memory.h> | |
| 12 | #include <xen/swiotlb-xen.h> | |
| 13 | ||
| 14 | #include <asm/cacheflush.h> | |
| 15 | #include <asm/xen/page.h> | |
| 16 | #include <asm/xen/hypercall.h> | |
| 17 | #include <asm/xen/interface.h> | |
| 18 | ||
| 1b65c4e5 | 19 | int xen_create_contiguous_region(phys_addr_t pstart, unsigned int order, |
| 83862ccf SS |
20 | unsigned int address_bits, |
| 21 | dma_addr_t *dma_handle) | |
| 22 | { | |
| 23 | if (!xen_initial_domain()) | |
| 24 | return -EINVAL; | |
| 25 | ||
| 26 | /* we assume that dom0 is mapped 1:1 for now */ | |
| 1b65c4e5 | 27 | *dma_handle = pstart; |
| 83862ccf SS |
28 | return 0; |
| 29 | } | |
| 30 | EXPORT_SYMBOL_GPL(xen_create_contiguous_region); | |
| 31 | ||
| 1b65c4e5 | 32 | void xen_destroy_contiguous_region(phys_addr_t pstart, unsigned int order) |
| 83862ccf SS |
33 | { |
| 34 | return; | |
| 35 | } | |
| 36 | EXPORT_SYMBOL_GPL(xen_destroy_contiguous_region); | |
| 37 | ||
| 38 | struct dma_map_ops *xen_dma_ops; | |
| 39 | EXPORT_SYMBOL_GPL(xen_dma_ops); | |
| 40 | ||
| 41 | static struct dma_map_ops xen_swiotlb_dma_ops = { | |
| 42 | .mapping_error = xen_swiotlb_dma_mapping_error, | |
| 43 | .alloc = xen_swiotlb_alloc_coherent, | |
| 44 | .free = xen_swiotlb_free_coherent, | |
| 45 | .sync_single_for_cpu = xen_swiotlb_sync_single_for_cpu, | |
| 46 | .sync_single_for_device = xen_swiotlb_sync_single_for_device, | |
| 47 | .sync_sg_for_cpu = xen_swiotlb_sync_sg_for_cpu, | |
| 48 | .sync_sg_for_device = xen_swiotlb_sync_sg_for_device, | |
| 49 | .map_sg = xen_swiotlb_map_sg_attrs, | |
| 50 | .unmap_sg = xen_swiotlb_unmap_sg_attrs, | |
| 51 | .map_page = xen_swiotlb_map_page, | |
| 52 | .unmap_page = xen_swiotlb_unmap_page, | |
| 53 | .dma_supported = xen_swiotlb_dma_supported, | |
| eb1ddc00 | 54 | .set_dma_mask = xen_swiotlb_set_dma_mask, |
| 83862ccf SS |
55 | }; |
| 56 | ||
| 57 | int __init xen_mm_init(void) | |
| 58 | { | |
| 59 | if (!xen_initial_domain()) | |
| 60 | return 0; | |
| 61 | xen_swiotlb_init(1, false); | |
| 62 | xen_dma_ops = &xen_swiotlb_dma_ops; | |
| 63 | return 0; | |
| 64 | } | |
| 65 | arch_initcall(xen_mm_init); |