1#ifndef _ALPHA_DMA_MAPPING_H
2#define _ALPHA_DMA_MAPPING_H
3
4
5#ifdef CONFIG_PCI
6
7#include <linux/pci.h>
8
9#define dma_map_single(dev, va, size, dir)		\
10		pci_map_single(alpha_gendev_to_pci(dev), va, size, dir)
11#define dma_unmap_single(dev, addr, size, dir)		\
12		pci_unmap_single(alpha_gendev_to_pci(dev), addr, size, dir)
13#define dma_alloc_coherent(dev, size, addr, gfp)	\
14		pci_alloc_consistent(alpha_gendev_to_pci(dev), size, addr)
15#define dma_free_coherent(dev, size, va, addr)		\
16		pci_free_consistent(alpha_gendev_to_pci(dev), size, va, addr)
17#define dma_map_page(dev, page, off, size, dir)		\
18		pci_map_page(alpha_gendev_to_pci(dev), page, off, size, dir)
19#define dma_unmap_page(dev, addr, size, dir)		\
20		pci_unmap_page(alpha_gendev_to_pci(dev), addr, size, dir)
21#define dma_map_sg(dev, sg, nents, dir)			\
22		pci_map_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
23#define dma_unmap_sg(dev, sg, nents, dir)		\
24		pci_unmap_sg(alpha_gendev_to_pci(dev), sg, nents, dir)
25#define dma_supported(dev, mask)			\
26		pci_dma_supported(alpha_gendev_to_pci(dev), mask)
27#define dma_mapping_error(addr)				\
28		pci_dma_mapping_error(addr)
29
30#else	/* no PCI - no IOMMU. */
31
32struct scatterlist;
33void *dma_alloc_coherent(struct device *dev, size_t size,
34			 dma_addr_t *dma_handle, gfp_t gfp);
35int dma_map_sg(struct device *dev, struct scatterlist *sg, int nents,
36	       enum dma_data_direction direction);
37
38#define dma_free_coherent(dev, size, va, addr)		\
39		free_pages((unsigned long)va, get_order(size))
40#define dma_supported(dev, mask)		(mask < 0x00ffffffUL ? 0 : 1)
41#define dma_map_single(dev, va, size, dir)	virt_to_phys(va)
42#define dma_map_page(dev, page, off, size, dir)	(page_to_pa(page) + off)
43
44#define dma_unmap_single(dev, addr, size, dir)	((void)0)
45#define dma_unmap_page(dev, addr, size, dir)	((void)0)
46#define dma_unmap_sg(dev, sg, nents, dir)	((void)0)
47
48#define dma_mapping_error(addr)  (0)
49
50#endif	/* !CONFIG_PCI */
51
52#define dma_alloc_noncoherent(d, s, h, f)	dma_alloc_coherent(d, s, h, f)
53#define dma_free_noncoherent(d, s, v, h)	dma_free_coherent(d, s, v, h)
54#define dma_is_consistent(d, h)			(1)
55
56int dma_set_mask(struct device *dev, u64 mask);
57
58#define dma_sync_single_for_cpu(dev, addr, size, dir)	  ((void)0)
59#define dma_sync_single_for_device(dev, addr, size, dir)  ((void)0)
60#define dma_sync_single_range(dev, addr, off, size, dir)  ((void)0)
61#define dma_sync_sg_for_cpu(dev, sg, nents, dir)	  ((void)0)
62#define dma_sync_sg_for_device(dev, sg, nents, dir)	  ((void)0)
63#define dma_cache_sync(dev, va, size, dir)		  ((void)0)
64#define dma_sync_single_range_for_cpu(dev, addr, offset, size, dir)	((void)0)
65#define dma_sync_single_range_for_device(dev, addr, offset, size, dir)	((void)0)
66
67#define dma_get_cache_alignment()			  L1_CACHE_BYTES
68
69#endif	/* _ALPHA_DMA_MAPPING_H */
70