271 	struct ide_atapi_pc *pc = drive->failed_pc;  in idetape_analyze_error()  local
284 	if (pc->flags & PC_FLAG_DMA_ERROR)  in idetape_analyze_error()
292 	if ((pc->c[0] == READ_6 || pc->c[0] == WRITE_6)  in idetape_analyze_error()
294 	    && pc->c[4] == 0 && pc->c[3] == 0 && pc->c[2] == 0) {  in idetape_analyze_error()
297 			pc->error = 0;  in idetape_analyze_error()
299 			pc->flags |= PC_FLAG_ABORT;  in idetape_analyze_error()
302 	if (pc->c[0] == READ_6 && (sense[2] & 0x80)) {  in idetape_analyze_error()
303 		pc->error = IDE_DRV_ERROR_FILEMARK;  in idetape_analyze_error()
304 		pc->flags |= PC_FLAG_ABORT;  in idetape_analyze_error()
306 	if (pc->c[0] == WRITE_6) {  in idetape_analyze_error()
309 			pc->error = IDE_DRV_ERROR_EOD;  in idetape_analyze_error()
310 			pc->flags |= PC_FLAG_ABORT;  in idetape_analyze_error()
313 	if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) {  in idetape_analyze_error()
315 			pc->error = IDE_DRV_ERROR_EOD;  in idetape_analyze_error()
316 			pc->flags |= PC_FLAG_ABORT;  in idetape_analyze_error()
318 		if (!(pc->flags & PC_FLAG_ABORT) &&  in idetape_analyze_error()
320 			pc->retries = IDETAPE_MAX_PC_RETRIES + 1;  in idetape_analyze_error()
329 	struct ide_atapi_pc *pc = drive->pc;  in ide_tape_callback()  local
331 	int uptodate = pc->error ? 0 : 1;  in ide_tape_callback()
340 	if (drive->failed_pc == pc)  in ide_tape_callback()
343 	if (pc->c[0] == REQUEST_SENSE) {  in ide_tape_callback()
349 	} else if (pc->c[0] == READ_6 || pc->c[0] == WRITE_6) {  in ide_tape_callback()
364 		if (pc->error) {  in ide_tape_callback()
366 			err = pc->error;  in ide_tape_callback()
441 					 struct ide_atapi_pc *pc)  in ide_tape_issue_pc()  argument
446 	if (drive->failed_pc == NULL && pc->c[0] != REQUEST_SENSE)  in ide_tape_issue_pc()
447 		drive->failed_pc = pc;  in ide_tape_issue_pc()
450 	drive->pc = pc;  in ide_tape_issue_pc()
452 	if (pc->retries > IDETAPE_MAX_PC_RETRIES ||  in ide_tape_issue_pc()
453 		(pc->flags & PC_FLAG_ABORT)) {  in ide_tape_issue_pc()
460 		if (!(pc->flags & PC_FLAG_ABORT)) {  in ide_tape_issue_pc()
461 			if (!(pc->c[0] == TEST_UNIT_READY &&  in ide_tape_issue_pc()
467 						tape->name, pc->c[0],  in ide_tape_issue_pc()
472 			pc->error = IDE_DRV_ERROR_GENERAL;  in ide_tape_issue_pc()
480 	ide_debug_log(IDE_DBG_SENSE, "retry #%d, cmd: 0x%02x", pc->retries,  in ide_tape_issue_pc()
481 		      pc->c[0]);  in ide_tape_issue_pc()
483 	pc->retries++;  in ide_tape_issue_pc()
489 static void idetape_create_mode_sense_cmd(struct ide_atapi_pc *pc, u8 page_code)  in idetape_create_mode_sense_cmd()  argument
491 	ide_init_pc(pc);  in idetape_create_mode_sense_cmd()
492 	pc->c[0] = MODE_SENSE;  in idetape_create_mode_sense_cmd()
495 		pc->c[1] = 8;  in idetape_create_mode_sense_cmd()
496 	pc->c[2] = page_code;  in idetape_create_mode_sense_cmd()
504 	pc->c[3] = 0;  in idetape_create_mode_sense_cmd()
506 	pc->c[4] = 255;  in idetape_create_mode_sense_cmd()
508 		pc->req_xfer = 12;  in idetape_create_mode_sense_cmd()
510 		pc->req_xfer = 24;  in idetape_create_mode_sense_cmd()
512 		pc->req_xfer = 50;  in idetape_create_mode_sense_cmd()
519 	struct ide_atapi_pc *pc = drive->pc;  in idetape_media_access_finished()  local
527 			if (pc->c[0] != TEST_UNIT_READY)  in idetape_media_access_finished()
534 		pc->error = 0;  in idetape_media_access_finished()
536 		pc->error = IDE_DRV_ERROR_GENERAL;  in idetape_media_access_finished()
544 				   struct ide_atapi_pc *pc, struct request *rq,  in ide_tape_create_rw_cmd()  argument
549 	ide_init_pc(pc);  in ide_tape_create_rw_cmd()
550 	put_unaligned(cpu_to_be32(length), (unsigned int *) &pc->c[1]);  in ide_tape_create_rw_cmd()
551 	pc->c[1] = 1;  in ide_tape_create_rw_cmd()
554 		pc->flags |= PC_FLAG_DMA_OK;  in ide_tape_create_rw_cmd()
557 		pc->c[0] = READ_6;  in ide_tape_create_rw_cmd()
559 		pc->c[0] = WRITE_6;  in ide_tape_create_rw_cmd()
560 		pc->flags |= PC_FLAG_WRITING;  in ide_tape_create_rw_cmd()
563 	memcpy(scsi_req(rq)->cmd, pc->c, 12);  in ide_tape_create_rw_cmd()
571 	struct ide_atapi_pc *pc = NULL;  in idetape_do_request()  local
585 	if (drive->failed_pc && drive->pc->c[0] == REQUEST_SENSE) {  in idetape_do_request()
586 		pc = drive->failed_pc;  in idetape_do_request()
632 		pc = &tape->queued_pc;  in idetape_do_request()
633 		ide_tape_create_rw_cmd(tape, pc, rq, READ_6);  in idetape_do_request()
637 		pc = &tape->queued_pc;  in idetape_do_request()
638 		ide_tape_create_rw_cmd(tape, pc, rq, WRITE_6);  in idetape_do_request()
642 		pc = (struct ide_atapi_pc *)rq->special;  in idetape_do_request()
667 	return ide_tape_issue_pc(drive, &cmd, pc);  in idetape_do_request()
675 		struct ide_atapi_pc *pc, int write_filemark)  in idetape_create_write_filemark_cmd()  argument
677 	ide_init_pc(pc);  in idetape_create_write_filemark_cmd()
678 	pc->c[0] = WRITE_FILEMARKS;  in idetape_create_write_filemark_cmd()
679 	pc->c[4] = write_filemark;  in idetape_create_write_filemark_cmd()
680 	pc->flags |= PC_FLAG_WAIT_FOR_DSC;  in idetape_create_write_filemark_cmd()
714 	struct ide_atapi_pc pc;  in idetape_flush_tape_buffers()  local
717 	idetape_create_write_filemark_cmd(drive, &pc, 0);  in idetape_flush_tape_buffers()
718 	rc = ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0);  in idetape_flush_tape_buffers()
728 	struct ide_atapi_pc pc;  in ide_tape_read_position()  local
734 	ide_init_pc(&pc);  in ide_tape_read_position()
735 	pc.c[0] = READ_POSITION;  in ide_tape_read_position()
736 	pc.req_xfer = 20;  in ide_tape_read_position()
738 	if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer))  in ide_tape_read_position()
741 	if (!pc.error) {  in ide_tape_read_position()
768 		struct ide_atapi_pc *pc,  in idetape_create_locate_cmd()  argument
771 	ide_init_pc(pc);  in idetape_create_locate_cmd()
772 	pc->c[0] = POSITION_TO_ELEMENT;  in idetape_create_locate_cmd()
773 	pc->c[1] = 2;  in idetape_create_locate_cmd()
774 	put_unaligned(cpu_to_be32(block), (unsigned int *) &pc->c[3]);  in idetape_create_locate_cmd()
775 	pc->c[8] = partition;  in idetape_create_locate_cmd()
776 	pc->flags |= PC_FLAG_WAIT_FOR_DSC;  in idetape_create_locate_cmd()
808 	struct ide_atapi_pc pc;  in idetape_position_tape()  local
813 	idetape_create_locate_cmd(drive, &pc, block, partition, skip);  in idetape_position_tape()
814 	ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0);  in idetape_position_tape()
888 static void idetape_create_inquiry_cmd(struct ide_atapi_pc *pc)  in idetape_create_inquiry_cmd()  argument
890 	ide_init_pc(pc);  in idetape_create_inquiry_cmd()
891 	pc->c[0] = INQUIRY;  in idetape_create_inquiry_cmd()
892 	pc->c[4] = 254;  in idetape_create_inquiry_cmd()
893 	pc->req_xfer = 254;  in idetape_create_inquiry_cmd()
897 		struct ide_atapi_pc *pc)  in idetape_create_rewind_cmd()  argument
899 	ide_init_pc(pc);  in idetape_create_rewind_cmd()
900 	pc->c[0] = REZERO_UNIT;  in idetape_create_rewind_cmd()
901 	pc->flags |= PC_FLAG_WAIT_FOR_DSC;  in idetape_create_rewind_cmd()
904 static void idetape_create_erase_cmd(struct ide_atapi_pc *pc)  in idetape_create_erase_cmd()  argument
906 	ide_init_pc(pc);  in idetape_create_erase_cmd()
907 	pc->c[0] = ERASE;  in idetape_create_erase_cmd()
908 	pc->c[1] = 1;  in idetape_create_erase_cmd()
909 	pc->flags |= PC_FLAG_WAIT_FOR_DSC;  in idetape_create_erase_cmd()
912 static void idetape_create_space_cmd(struct ide_atapi_pc *pc, int count, u8 cmd)  in idetape_create_space_cmd()  argument
914 	ide_init_pc(pc);  in idetape_create_space_cmd()
915 	pc->c[0] = SPACE;  in idetape_create_space_cmd()
916 	put_unaligned(cpu_to_be32(count), (unsigned int *) &pc->c[1]);  in idetape_create_space_cmd()
917 	pc->c[1] = cmd;  in idetape_create_space_cmd()
918 	pc->flags |= PC_FLAG_WAIT_FOR_DSC;  in idetape_create_space_cmd()
1013 	struct ide_atapi_pc pc;  in idetape_rewind_tape()  local
1018 	idetape_create_rewind_cmd(drive, &pc);  in idetape_rewind_tape()
1019 	ret = ide_queue_pc_tail(drive, disk, &pc, NULL, 0);  in idetape_rewind_tape()
1068 	struct ide_atapi_pc pc;  in idetape_space_over_filemarks()  local
1094 		idetape_create_space_cmd(&pc, mt_count - count,  in idetape_space_over_filemarks()
1096 		return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);  in idetape_space_over_filemarks()
1230 	struct ide_atapi_pc pc;  in idetape_write_filemark()  local
1233 	idetape_create_write_filemark_cmd(drive, &pc, 1);  in idetape_write_filemark()
1234 	if (ide_queue_pc_tail(drive, tape->disk, &pc, NULL, 0)) {  in idetape_write_filemark()
1258 	struct ide_atapi_pc pc;  in idetape_mtioctop()  local
1319 		idetape_create_space_cmd(&pc, 0, IDETAPE_SPACE_TO_EOD);  in idetape_mtioctop()
1320 		return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);  in idetape_mtioctop()
1323 		idetape_create_erase_cmd(&pc);  in idetape_mtioctop()
1324 		return ide_queue_pc_tail(drive, disk, &pc, NULL, 0);  in idetape_mtioctop()
1442 	struct ide_atapi_pc pc;  in ide_tape_get_bsize_from_bdesc()  local
1445 	idetape_create_mode_sense_cmd(&pc, IDETAPE_BLOCK_DESCRIPTOR);  in ide_tape_get_bsize_from_bdesc()
1446 	if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) {  in ide_tape_get_bsize_from_bdesc()
1606 	struct ide_atapi_pc pc;  in idetape_get_inquiry_results()  local
1610 	idetape_create_inquiry_cmd(&pc);  in idetape_get_inquiry_results()
1611 	if (ide_queue_pc_tail(drive, tape->disk, &pc, pc_buf, pc.req_xfer)) {  in idetape_get_inquiry_results()
1635 	struct ide_atapi_pc pc;  in idetape_get_mode_sense_results()  local
1639 	idetape_create_mode_sense_cmd(&pc, IDETAPE_CAPABILITIES_PAGE);  in idetape_get_mode_sense_results()
1640 	if (ide_queue_pc_tail(drive, tape->disk, &pc, buf, pc.req_xfer)) {  in idetape_get_mode_sense_results()