20 /* the struct page *blocks[] parameter passed to async_gen_syndrome()
22  * blocks[disks-2] and the 'Q' destination address at blocks[disks-1]
107 do_sync_gen_syndrome(struct page **blocks, unsigned int *offsets, int disks,  in do_sync_gen_syndrome()  argument
117 		srcs = (void **) blocks;  in do_sync_gen_syndrome()
120 		if (blocks[i] == NULL) {  in do_sync_gen_syndrome()
124 			srcs[i] = page_address(blocks[i]) + offsets[i];  in do_sync_gen_syndrome()
157  * @blocks: source blocks from idx 0..disks-3, P @ disks-2 and Q @ disks-1
159  * @disks: number of blocks (including missing P or Q, see below)
167  * both) from the calculation by setting blocks[disks-2] or
168  * blocks[disks-1] to NULL.  When P or Q is omitted 'len' must be <=
171  * buffers.  If any source buffers (blocks[i] where i < disks - 2) are
177 async_gen_syndrome(struct page **blocks, unsigned int *offsets, int disks,  in async_gen_syndrome()  argument
182 						      &P(blocks, disks), 2,  in async_gen_syndrome()
183 						      blocks, src_cnt, len);  in async_gen_syndrome()
187 	BUG_ON(disks > MAX_DISKS || !(P(blocks, disks) || Q(blocks, disks)));  in async_gen_syndrome()
211 			if (blocks[i] == NULL)  in async_gen_syndrome()
213 			unmap->addr[j] = dma_map_page(device->dev, blocks[i],  in async_gen_syndrome()
225 		if (P(blocks, disks))  in async_gen_syndrome()
226 			unmap->addr[j++] = dma_map_page(device->dev, P(blocks, disks),  in async_gen_syndrome()
235 		if (Q(blocks, disks))  in async_gen_syndrome()
236 			unmap->addr[j++] = dma_map_page(device->dev, Q(blocks, disks),  in async_gen_syndrome()
257 	if (!P(blocks, disks)) {  in async_gen_syndrome()
258 		P(blocks, disks) = pq_scribble_page;  in async_gen_syndrome()
261 	if (!Q(blocks, disks)) {  in async_gen_syndrome()
262 		Q(blocks, disks) = pq_scribble_page;  in async_gen_syndrome()
265 	do_sync_gen_syndrome(blocks, offsets, disks, len, submit);  in async_gen_syndrome()
272 pq_val_chan(struct async_submit_ctl *submit, struct page **blocks, int disks, size_t len)  in pq_val_chan()  argument
277 	return async_tx_find_channel(submit, DMA_PQ_VAL, NULL, 0,  blocks,  in pq_val_chan()
283  * @blocks: source blocks from idx 0..disks-3, P @ disks-2 and Q @ disks-1
285  * @disks: number of blocks (including missing P or Q, see below)
292  * The same notes from async_gen_syndrome apply to the 'blocks',
298 async_syndrome_val(struct page **blocks, unsigned int *offsets, int disks,  in async_syndrome_val()  argument
302 	struct dma_chan *chan = pq_val_chan(submit, blocks, disks, len);  in async_syndrome_val()
325 			if (likely(blocks[i])) {  in async_syndrome_val()
326 				unmap->addr[j] = dma_map_page(dev, blocks[i],  in async_syndrome_val()
335 		if (!P(blocks, disks)) {  in async_syndrome_val()
339 			pq[0] = dma_map_page(dev, P(blocks, disks),  in async_syndrome_val()
345 		if (!Q(blocks, disks)) {  in async_syndrome_val()
349 			pq[1] = dma_map_page(dev, Q(blocks, disks),  in async_syndrome_val()
374 		struct page *p_src = P(blocks, disks);  in async_syndrome_val()
376 		struct page *q_src = Q(blocks, disks);  in async_syndrome_val()
404 					blocks, offsets, disks-2, len, submit);  in async_syndrome_val()
412 			P(blocks, disks) = NULL;  in async_syndrome_val()
413 			Q(blocks, disks) = spare;  in async_syndrome_val()
416 			tx = async_gen_syndrome(blocks, offsets, disks,  in async_syndrome_val()
425 		P(blocks, disks) = p_src;  in async_syndrome_val()
427 		Q(blocks, disks) = q_src;  in async_syndrome_val()