static void
ptstart(struct cam_periph *periph, union ccb *start_ccb)
{
struct pt_softc *softc;
struct buf *bp;
struct bio *bio;
softc = (struct pt_softc *)periph->softc;
/*
* See if there is a buf with work for us to do..
*/
bio = bioq_first(&softc->bio_queue);
if (periph->immediate_priority <= periph->pinfo.priority) {
CAM_DEBUG_PRINT(CAM_DEBUG_SUBTRACE,
("queuing for immediate ccb\n"));
start_ccb->ccb_h.ccb_state = PT_CCB_WAITING;
SLIST_INSERT_HEAD(&periph->ccb_list, &start_ccb->ccb_h,
periph_links.sle);
periph->immediate_priority = CAM_PRIORITY_NONE;
wakeup(&periph->ccb_list);
} else if (bio == NULL) {
xpt_release_ccb(start_ccb);
} else {
bioq_remove(&softc->bio_queue, bio);
bp = bio->bio_buf;
devstat_start_transaction(&softc->device_stats);
scsi_send_receive(&start_ccb->csio,
/*retries*/4,
ptdone,
MSG_SIMPLE_Q_TAG,
(bp->b_cmd == BUF_CMD_READ),
/*byte2*/0,
bp->b_bcount,
bp->b_data,
/*sense_len*/SSD_FULL_SIZE,
/*timeout*/softc->io_timeout);
start_ccb->ccb_h.ccb_state = PT_CCB_BUFFER_IO_UA;
/*
* Block out any asyncronous callbacks
* while we touch the pending ccb list.
*/
LIST_INSERT_HEAD(&softc->pending_ccbs, &start_ccb->ccb_h,
periph_links.le);
start_ccb->ccb_h.ccb_bio = bio;
bio = bioq_first(&softc->bio_queue);
xpt_action(start_ccb);
if (bio != NULL) {
/* Have more work to do, so ensure we stay scheduled */
xpt_schedule(periph, /* XXX priority */1);
}
}
}
static void
ptstart(struct cam_periph *periph, union ccb *start_ccb)
{
struct pt_softc *softc;
struct bio *bp;
softc = (struct pt_softc *)periph->softc;
CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("ptstart\n"));
/*
* See if there is a buf with work for us to do..
*/
bp = bioq_first(&softc->bio_queue);
if (bp == NULL) {
xpt_release_ccb(start_ccb);
} else {
bioq_remove(&softc->bio_queue, bp);
devstat_start_transaction_bio(softc->device_stats, bp);
scsi_send_receive(&start_ccb->csio,
/*retries*/4,
ptdone,
MSG_SIMPLE_Q_TAG,
bp->bio_cmd == BIO_READ,
/*byte2*/0,
bp->bio_bcount,
bp->bio_data,
/*sense_len*/SSD_FULL_SIZE,
/*timeout*/softc->io_timeout);
start_ccb->ccb_h.ccb_state = PT_CCB_BUFFER_IO_UA;
/*
* Block out any asynchronous callbacks
* while we touch the pending ccb list.
*/
LIST_INSERT_HEAD(&softc->pending_ccbs, &start_ccb->ccb_h,
periph_links.le);
start_ccb->ccb_h.ccb_bp = bp;
bp = bioq_first(&softc->bio_queue);
xpt_action(start_ccb);
if (bp != NULL) {
/* Have more work to do, so ensure we stay scheduled */
xpt_schedule(periph, CAM_PRIORITY_NORMAL);
}
}
}