s390/block/dasd_fba.c

50 MODULE_DEVICE_TABLE(ccw, dasd_fba_ids);
75 define_extent(struct ccw1 * ccw, struct DE_fba_data *data, int rw,
78 	ccw->cmd_code = DASD_FBA_CCW_DEFINE_EXTENT;
79 	ccw->flags = 0;
80 	ccw->count = 16;
81 	ccw->cda = virt_to_dma32(data);
95 locate_record(struct ccw1 * ccw, struct LO_fba_data *data, int rw,
98 	ccw->cmd_code = DASD_FBA_CCW_LOCATE;
99 	ccw->flags = 0;
100 	ccw->count = 8;
101 	ccw->cda = virt_to_dma32(data);
245 static void ccw_write_no_data(struct ccw1 *ccw)
247 	ccw->cmd_code = DASD_FBA_CCW_WRITE;
248 	ccw->flags |= CCW_FLAG_SLI;
249 	ccw->count = 0;
255 static void ccw_write_zero(struct ccw1 *ccw, int count)
257 	ccw->cmd_code = DASD_FBA_CCW_WRITE;
258 	ccw->flags |= CCW_FLAG_SLI;
259 	ccw->count = count;
260 	ccw->cda = virt_to_dma32(dasd_fba_zero_page);
318 	struct ccw1 *ccw;
351 	ccw = cqr->cpaddr;
353 	define_extent(ccw++, cqr->data, WRITE, blksize, first_rec, count);
364 		ccw[-1].flags |= CCW_FLAG_CC;
365 		locate_record(ccw++, LO_data++, WRITE, cur_pos, wz_count);
367 		ccw[-1].flags |= CCW_FLAG_CC;
368 		ccw_write_zero(ccw++, wz_count * blksize);
384 		ccw[-1].flags |= CCW_FLAG_CC;
385 		locate_record(ccw++, LO_data++, WRITE, cur_pos, d_count);
387 		ccw[-1].flags |= CCW_FLAG_CC;
388 		ccw_write_no_data(ccw++);
402 		ccw[-1].flags |= CCW_FLAG_CC;
403 		locate_record(ccw++, LO_data++, WRITE, cur_pos, wz_count);
405 		ccw[-1].flags |= CCW_FLAG_CC;
406 		ccw_write_zero(ccw++, wz_count * blksize);
433 	struct ccw1 *ccw;
480 	/* Allocate the ccw request. */
485 	ccw = cqr->cpaddr;
486 	/* First ccw is define extent. */
487 	define_extent(ccw++, cqr->data, rq_data_dir(req),
494 		ccw[-1].flags |= CCW_FLAG_CC;
495 		locate_record(ccw++, LO_data++, rq_data_dir(req), 0, count);
511 				ccw[-1].flags |= CCW_FLAG_CC;
512 				locate_record(ccw, LO_data++,
515 				ccw->flags = CCW_FLAG_CC;
516 				ccw++;
519 					ccw[-1].flags |= CCW_FLAG_DC;
521 					ccw[-1].flags |= CCW_FLAG_CC;
523 			ccw->cmd_code = cmd;
524 			ccw->count = block->bp_block;
526 				ccw->cda = virt_to_dma32(idaws);
527 				ccw->flags = CCW_FLAG_IDA;
530 				ccw->cda = virt_to_dma32(dst);
531 				ccw->flags = 0;
533 			ccw++;
565 	struct ccw1 *ccw;
575 	ccw = cqr->cpaddr;
577 	ccw++;
579 		ccw++;
585 				ccw++;
587 				if (ccw->flags & CCW_FLAG_IDA)
588 					cda = *((char **)dma32_to_virt(ccw->cda));
590 					cda = dma32_to_virt(ccw->cda);
599 			ccw++;