arm/mach-bcmring/dma.c

1715 *   Adds a segment of memory to a memory map. Each segment is both
1723 			       DMA_Region_t *region,	/* Region that the segment belongs to */
1724 			       void *virtAddr,	/* Virtual address of the segment being added */
1725 			       dma_addr_t physAddr,	/* Physical address of the segment being added */
1726 			       size_t numBytes	/* Number of bytes of the segment being added */
1728 	DMA_Segment_t *segment;
1745 		/* Check to see if this segment is physically contiguous with the previous one */
1747 		segment = &region->segment[region->numSegmentsUsed - 1];
1749 		if ((segment->physAddr + segment->numBytes) == physAddr) {
1752 			DMA_MAP_PRINT("appending %d bytes to last segment\n",
1755 			segment->numBytes += numBytes;
1774 		memcpy(newSegment, region->segment, oldSize);
1777 		kfree(region->segment);
1780 		region->segment = newSegment;
1783 	segment = &region->segment[region->numSegmentsUsed];
1786 	segment->virtAddr = virtAddr;
1787 	segment->physAddr = physAddr;
1788 	segment->numBytes = numBytes;
1878 			/* one segment */
2095 	DMA_Segment_t *segment;
2113 			segment = &region->segment[segmentIdx];
2116 				srcPhysAddr = segment->physAddr;
2120 				dstPhysAddr = segment->physAddr;
2126 							    segment->
2170 			segment = &region->segment[segmentIdx];
2173 				srcPhysAddr = segment->physAddr;
2177 				dstPhysAddr = segment->physAddr;
2183 						 segment->numBytes);
2219 	DMA_Segment_t *segment;
2228 			segment = &region->segment[segmentIdx];
2244 							 segment->physAddr,
2245 							 segment->numBytes,
2254 								segment->
2256 								segment->
2279 			segment->virtAddr = NULL;
2280 			segment->physAddr = 0;
2281 			segment->numBytes = 0;