50 		      const unsigned char *scfs, int disks,  in do_async_gen_syndrome()  argument
60 	int src_cnt = disks - 2;  in do_async_gen_syndrome()
91 			dma_dest[0] = unmap->addr[disks - 2];  in do_async_gen_syndrome()
92 			dma_dest[1] = unmap->addr[disks - 1];  in do_async_gen_syndrome()
122 do_sync_gen_syndrome(struct page **blocks, unsigned int offset, int disks,  in do_sync_gen_syndrome()  argument
127 	int start = -1, stop = disks - 3;  in do_sync_gen_syndrome()
134 	for (i = 0; i < disks; i++) {  in do_sync_gen_syndrome()
136 			BUG_ON(i > disks - 3); /* P or Q can't be zero */  in do_sync_gen_syndrome()
140 			if (i < disks - 2) {  in do_sync_gen_syndrome()
150 			raid6_call.xor_syndrome(disks, start, stop, len, srcs);  in do_sync_gen_syndrome()
152 		raid6_call.gen_syndrome(disks, len, srcs);  in do_sync_gen_syndrome()
178 async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,  in async_gen_syndrome()  argument
181 	int src_cnt = disks - 2;  in async_gen_syndrome()
183 						      &P(blocks, disks), 2,  in async_gen_syndrome()
188 	BUG_ON(disks > 255 || !(P(blocks, disks) || Q(blocks, disks)));  in async_gen_syndrome()
191 		unmap = dmaengine_get_unmap_data(device->dev, disks, GFP_NOWAIT);  in async_gen_syndrome()
205 			 __func__, disks, len);  in async_gen_syndrome()
226 		if (P(blocks, disks))  in async_gen_syndrome()
227 			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()
251 	pr_debug("%s: (sync) disks: %d len: %zu\n", __func__, disks, len);  in async_gen_syndrome()
256 	if (!P(blocks, disks)) {  in async_gen_syndrome()
257 		P(blocks, disks) = pq_scribble_page;  in async_gen_syndrome()
260 	if (!Q(blocks, disks)) {  in async_gen_syndrome()
261 		Q(blocks, disks) = pq_scribble_page;  in async_gen_syndrome()
264 	do_sync_gen_syndrome(blocks, offset, disks, len, submit);  in async_gen_syndrome()
271 pq_val_chan(struct async_submit_ctl *submit, struct page **blocks, int disks, size_t len)  in pq_val_chan()  argument
277 				     disks, len);  in pq_val_chan()
296 async_syndrome_val(struct page **blocks, unsigned int offset, int disks,  in async_syndrome_val()  argument
300 	struct dma_chan *chan = pq_val_chan(submit, blocks, disks, len);  in async_syndrome_val()
303 	unsigned char coefs[disks-2];  in async_syndrome_val()
307 	BUG_ON(disks < 4);  in async_syndrome_val()
310 		unmap = dmaengine_get_unmap_data(device->dev, disks, GFP_NOWAIT);  in async_syndrome_val()
312 	if (unmap && disks <= dma_maxpq(device, 0) &&  in async_syndrome_val()
319 			 __func__, disks, len);  in async_syndrome_val()
322 		for (i = 0; i < disks-2; i++)  in async_syndrome_val()
333 		if (!P(blocks, disks)) {  in async_syndrome_val()
337 			pq[0] = dma_map_page(dev, P(blocks, disks),  in async_syndrome_val()
343 		if (!Q(blocks, disks)) {  in async_syndrome_val()
347 			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()
375 		struct page *q_src = Q(blocks, disks);  in async_syndrome_val()
383 			 __func__, disks, len);  in async_syndrome_val()
401 			tx = async_xor(spare, blocks, offset, disks-2, len, submit);  in async_syndrome_val()
409 			P(blocks, disks) = NULL;  in async_syndrome_val()
410 			Q(blocks, disks) = spare;  in async_syndrome_val()
412 			tx = async_gen_syndrome(blocks, offset, disks, len, submit);  in async_syndrome_val()
420 		P(blocks, disks) = p_src;  in async_syndrome_val()
421 		Q(blocks, disks) = q_src;  in async_syndrome_val()