drivers/scsi/sr.c

87 static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt);
294 static int sr_done(struct scsi_cmnd *SCpnt)
296 	int result = SCpnt->result;
297 	int this_count = scsi_bufflen(SCpnt);
301 	struct request *rq = scsi_cmd_to_rq(SCpnt);
305 	scmd_printk(KERN_INFO, SCpnt, "done: %x\n", result);
315 	    (SCpnt->sense_buffer[0] & 0x7f) == 0x70) { /* Sense current */
316 		switch (SCpnt->sense_buffer[2]) {
320 			if (!(SCpnt->sense_buffer[0] & 0x90))
323 				get_unaligned_be32(&SCpnt->sense_buffer[3]);
359 static blk_status_t sr_init_command(struct scsi_cmnd *SCpnt)
363 	struct request *rq = scsi_cmd_to_rq(SCpnt);
366 	ret = scsi_alloc_sgtables(SCpnt);
371 	SCSI_LOG_HLQUEUE(1, scmd_printk(KERN_INFO, SCpnt,
375 		SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt,
377 		SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt,
378 			"Retry with 0x%p\n", SCpnt));
392 		scmd_printk(KERN_ERR, SCpnt, "bad sector size %d\n", s_size);
400 		SCpnt->cmnd[0] = WRITE_10;
404 		SCpnt->cmnd[0] = READ_10;
413 		int i, size = 0, sg_count = scsi_sg_count(SCpnt);
415 		scsi_for_each_sg(SCpnt, sg, sg_count, i)
418 		if (size != scsi_bufflen(SCpnt)) {
419 			scmd_printk(KERN_ERR, SCpnt,
421 				size, scsi_bufflen(SCpnt));
422 			if (scsi_bufflen(SCpnt) > size)
423 				SCpnt->sdb.length = size;
431 	    (scsi_bufflen(SCpnt) % s_size)) {
432 		scmd_printk(KERN_NOTICE, SCpnt, "unaligned transfer\n");
436 	this_count = (scsi_bufflen(SCpnt) >> 9) / (s_size >> 9);
439 	SCSI_LOG_HLQUEUE(2, scmd_printk(KERN_INFO, SCpnt,
445 	SCpnt->cmnd[1] = 0;
450 		SCpnt->sdb.length = this_count * s_size;
453 	put_unaligned_be32(block, &SCpnt->cmnd[2]);
454 	SCpnt->cmnd[6] = SCpnt->cmnd[9] = 0;
455 	put_unaligned_be16(this_count, &SCpnt->cmnd[7]);
462 	SCpnt->transfersize = cd->device->sector_size;
463 	SCpnt->underflow = this_count << 9;
464 	SCpnt->allowed = MAX_RETRIES;
465 	SCpnt->cmd_len = 10;
472 	scsi_free_sgtables(SCpnt);