7cdad48297
The old __address element in struct scatterlist remained from older kernels because the ARM DMA emulation code made use of it. Move this field into struct dma_struct, and convert DMA emulation code to setup a SG entry as required. Also, convert DMA emulation code to use the new DMA API rather than the PCI DMA API. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
24 lines
728 B
C
24 lines
728 B
C
#ifndef _ASMARM_SCATTERLIST_H
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#define _ASMARM_SCATTERLIST_H
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#include <asm/memory.h>
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#include <asm/types.h>
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struct scatterlist {
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struct page *page; /* buffer page */
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unsigned int offset; /* buffer offset */
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dma_addr_t dma_address; /* dma address */
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unsigned int length; /* length */
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};
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/*
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* These macros should be used after a pci_map_sg call has been done
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* to get bus addresses of each of the SG entries and their lengths.
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* You should only work with the number of sg entries pci_map_sg
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* returns, or alternatively stop on the first sg_dma_len(sg) which
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* is 0.
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*/
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#define sg_dma_address(sg) ((sg)->dma_address)
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#define sg_dma_len(sg) ((sg)->length)
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#endif /* _ASMARM_SCATTERLIST_H */
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