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 offset, 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]) + offset;  in do_sync_gen_syndrome()
143  * @blocks: source blocks from idx 0..disks-3, P @ disks-2 and Q @ disks-1
145  * @disks: number of blocks (including missing P or Q, see below)
153  * both) from the calculation by setting blocks[disks-2] or
154  * blocks[disks-1] to NULL.  When P or Q is omitted 'len' must be <=
157  * buffers.  If any source buffers (blocks[i] where i < disks - 2) are
163 async_gen_syndrome(struct page **blocks, unsigned int offset, int disks,  in async_gen_syndrome()  argument
168 						      &P(blocks, disks), 2,  in async_gen_syndrome()
169 						      blocks, src_cnt, len);  in async_gen_syndrome()
173 	BUG_ON(disks > MAX_DISKS || !(P(blocks, disks) || Q(blocks, disks)));  in async_gen_syndrome()
197 			if (blocks[i] == NULL)  in async_gen_syndrome()
199 			unmap->addr[j] = dma_map_page(device->dev, blocks[i], offset,  in async_gen_syndrome()
211 		if (P(blocks, disks))  in async_gen_syndrome()
212 			unmap->addr[j++] = dma_map_page(device->dev, P(blocks, disks),  in async_gen_syndrome()
220 		if (Q(blocks, disks))  in async_gen_syndrome()
221 			unmap->addr[j++] = dma_map_page(device->dev, Q(blocks, disks),  in async_gen_syndrome()
241 	if (!P(blocks, disks)) {  in async_gen_syndrome()
242 		P(blocks, disks) = pq_scribble_page;  in async_gen_syndrome()
245 	if (!Q(blocks, disks)) {  in async_gen_syndrome()
246 		Q(blocks, disks) = pq_scribble_page;  in async_gen_syndrome()
249 	do_sync_gen_syndrome(blocks, offset, disks, len, submit);  in async_gen_syndrome()
256 pq_val_chan(struct async_submit_ctl *submit, struct page **blocks, int disks, size_t len)  in pq_val_chan()  argument
261 	return async_tx_find_channel(submit, DMA_PQ_VAL, NULL, 0,  blocks,  in pq_val_chan()
267  * @blocks: source blocks from idx 0..disks-3, P @ disks-2 and Q @ disks-1
269  * @disks: number of blocks (including missing P or Q, see below)
275  * The same notes from async_gen_syndrome apply to the 'blocks',
281 async_syndrome_val(struct page **blocks, unsigned int offset, int disks,  in async_syndrome_val()  argument
285 	struct dma_chan *chan = pq_val_chan(submit, blocks, disks, len);  in async_syndrome_val()
308 			if (likely(blocks[i])) {  in async_syndrome_val()
309 				unmap->addr[j] = dma_map_page(dev, blocks[i],  in async_syndrome_val()
318 		if (!P(blocks, disks)) {  in async_syndrome_val()
322 			pq[0] = dma_map_page(dev, P(blocks, disks),  in async_syndrome_val()
328 		if (!Q(blocks, disks)) {  in async_syndrome_val()
332 			pq[1] = dma_map_page(dev, Q(blocks, disks),  in async_syndrome_val()
357 		struct page *p_src = P(blocks, disks);  in async_syndrome_val()
358 		struct page *q_src = Q(blocks, disks);  in async_syndrome_val()
384 			tx = async_xor(spare, blocks, offset, disks-2, len, submit);  in async_syndrome_val()
392 			P(blocks, disks) = NULL;  in async_syndrome_val()
393 			Q(blocks, disks) = spare;  in async_syndrome_val()
395 			tx = async_gen_syndrome(blocks, offset, disks, len, submit);  in async_syndrome_val()
403 		P(blocks, disks) = p_src;  in async_syndrome_val()
404 		Q(blocks, disks) = q_src;  in async_syndrome_val()