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 @@ -/* - * DMA region bookkeeping routines - * - * Copyright (C) 2002 Maas Digital LLC - * - * This code is licensed under the GPL. See the file COPYING in the root - * directory of the kernel sources for details. - */ - -#ifndef IEEE1394_DMA_H -#define IEEE1394_DMA_H - -#include <asm/types.h> - -struct file; -struct pci_dev; -struct scatterlist; -struct vm_area_struct; - -/** - * struct dma_prog_region - small contiguous DMA buffer - * @kvirt: kernel virtual address - * @dev: PCI device - * @n_pages: number of kernel pages - * @bus_addr: base bus address - * - * a small, physically contiguous DMA buffer with random-access, synchronous - * usage characteristics - */ -struct dma_prog_region { - unsigned char *kvirt; - struct pci_dev *dev; - unsigned int n_pages; - dma_addr_t bus_addr; -}; - -/* clear out all fields but do not allocate any memory */ -void dma_prog_region_init(struct dma_prog_region *prog); -int dma_prog_region_alloc(struct dma_prog_region *prog, unsigned long n_bytes, - struct pci_dev *dev); -void dma_prog_region_free(struct dma_prog_region *prog); - -static inline dma_addr_t dma_prog_region_offset_to_bus( - struct dma_prog_region *prog, unsigned long offset) -{ - return prog->bus_addr + offset; -} - -/** - * struct dma_region - large non-contiguous DMA buffer - * @virt: kernel virtual address - * @dev: PCI device - * @n_pages: number of kernel pages - * @n_dma_pages: number of IOMMU pages - * @sglist: IOMMU mapping - * @direction: PCI_DMA_TODEVICE, etc. - * - * a large, non-physically-contiguous DMA buffer with streaming, asynchronous - * usage characteristics - */ -struct dma_region { - unsigned char *kvirt; - struct pci_dev *dev; - unsigned int n_pages; - unsigned int n_dma_pages; - struct scatterlist *sglist; - int direction; -}; - -void dma_region_init(struct dma_region *dma); -int dma_region_alloc(struct dma_region *dma, unsigned long n_bytes, - struct pci_dev *dev, int direction); -void dma_region_free(struct dma_region *dma); -void dma_region_sync_for_cpu(struct dma_region *dma, unsigned long offset, - unsigned long len); -void dma_region_sync_for_device(struct dma_region *dma, unsigned long offset, - unsigned long len); -int dma_region_mmap(struct dma_region *dma, struct file *file, - struct vm_area_struct *vma); -dma_addr_t dma_region_offset_to_bus(struct dma_region *dma, - unsigned long offset); - -/** - * dma_region_i - macro to index into a DMA region (or dma_prog_region) - */ -#define dma_region_i(_dma, _type, _index) \ - ( ((_type*) ((_dma)->kvirt)) + (_index) ) - -#endif /* IEEE1394_DMA_H */ |