diff options
Diffstat (limited to 'drivers/ieee1394/dma.h')
-rw-r--r-- | drivers/ieee1394/dma.h | 89 |
1 files changed, 0 insertions, 89 deletions
diff --git a/drivers/ieee1394/dma.h b/drivers/ieee1394/dma.h deleted file mode 100644 index 467373cab8e..00000000000 --- a/drivers/ieee1394/dma.h +++ /dev/null | |||
@@ -1,89 +0,0 @@ | |||
1 | /* | ||
2 | * DMA region bookkeeping routines | ||
3 | * | ||
4 | * Copyright (C) 2002 Maas Digital LLC | ||
5 | * | ||
6 | * This code is licensed under the GPL. See the file COPYING in the root | ||
7 | * directory of the kernel sources for details. | ||
8 | */ | ||
9 | |||
10 | #ifndef IEEE1394_DMA_H | ||
11 | #define IEEE1394_DMA_H | ||
12 | |||
13 | #include <asm/types.h> | ||
14 | |||
15 | struct file; | ||
16 | struct pci_dev; | ||
17 | struct scatterlist; | ||
18 | struct vm_area_struct; | ||
19 | |||
20 | /** | ||
21 | * struct dma_prog_region - small contiguous DMA buffer | ||
22 | * @kvirt: kernel virtual address | ||
23 | * @dev: PCI device | ||
24 | * @n_pages: number of kernel pages | ||
25 | * @bus_addr: base bus address | ||
26 | * | ||
27 | * a small, physically contiguous DMA buffer with random-access, synchronous | ||
28 | * usage characteristics | ||
29 | */ | ||
30 | struct dma_prog_region { | ||
31 | unsigned char *kvirt; | ||
32 | struct pci_dev *dev; | ||
33 | unsigned int n_pages; | ||
34 | dma_addr_t bus_addr; | ||
35 | }; | ||
36 | |||
37 | /* clear out all fields but do not allocate any memory */ | ||
38 | void dma_prog_region_init(struct dma_prog_region *prog); | ||
39 | int dma_prog_region_alloc(struct dma_prog_region *prog, unsigned long n_bytes, | ||
40 | struct pci_dev *dev); | ||
41 | void dma_prog_region_free(struct dma_prog_region *prog); | ||
42 | |||
43 | static inline dma_addr_t dma_prog_region_offset_to_bus( | ||
44 | struct dma_prog_region *prog, unsigned long offset) | ||
45 | { | ||
46 | return prog->bus_addr + offset; | ||
47 | } | ||
48 | |||
49 | /** | ||
50 | * struct dma_region - large non-contiguous DMA buffer | ||
51 | * @virt: kernel virtual address | ||
52 | * @dev: PCI device | ||
53 | * @n_pages: number of kernel pages | ||
54 | * @n_dma_pages: number of IOMMU pages | ||
55 | * @sglist: IOMMU mapping | ||
56 | * @direction: PCI_DMA_TODEVICE, etc. | ||
57 | * | ||
58 | * a large, non-physically-contiguous DMA buffer with streaming, asynchronous | ||
59 | * usage characteristics | ||
60 | */ | ||
61 | struct dma_region { | ||
62 | unsigned char *kvirt; | ||
63 | struct pci_dev *dev; | ||
64 | unsigned int n_pages; | ||
65 | unsigned int n_dma_pages; | ||
66 | struct scatterlist *sglist; | ||
67 | int direction; | ||
68 | }; | ||
69 | |||
70 | void dma_region_init(struct dma_region *dma); | ||
71 | int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes, | ||
72 | struct pci_dev *dev, int direction); | ||
73 | void dma_region_free(struct dma_region *dma); | ||
74 | void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset, | ||
75 | unsigned long len); | ||
76 | void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset, | ||
77 | unsigned long len); | ||
78 | int dma_region_mmap(struct dma_region *dma, struct file *file, | ||
79 | struct vm_area_struct *vma); | ||
80 | dma_addr_t dma_region_offset_to_bus(struct dma_region *dma, | ||
81 | unsigned long offset); | ||
82 | |||
83 | /** | ||
84 | * dma_region_i - macro to index into a DMA region (or dma_prog_region) | ||
85 | */ | ||
86 | #define dma_region_i(_dma, _type, _index) \ | ||
87 | ( ((_type*) ((_dma)->kvirt)) + (_index) ) | ||
88 | |||
89 | #endif /* IEEE1394_DMA_H */ | ||