dma/ioat/prep.c

20  * extended descriptor of an xor or pq descriptor
161 	struct ioat_xor_descriptor *xor;
198 		xor = desc->xor;
207 		descs[0] = (struct ioat_raw_descriptor *) xor;
211 		xor->size = xfer_size;
212 		xor->dst_addr = dest + offset;
213 		xor->ctl = 0;
214 		xor->ctl_f.op = op;
215 		xor->ctl_f.src_cnt = src_cnt_to_hw(src_cnt);
222 	/* last xor descriptor carries the unmap parameters and fence bit */
227 	xor->ctl_f.fence = !!(flags & DMA_PREP_FENCE);