int
mpt_intr(void *arg)
{
mpt_softc_t *mpt = arg;
int nrepl = 0;
uint32_t reply;
if ((mpt_read(mpt, MPT_OFFSET_INTR_STATUS) & MPT_INTR_REPLY_READY) == 0)
return (0);
reply = mpt_pop_reply_queue(mpt);
while (reply != MPT_REPLY_EMPTY) {
nrepl++;
if (mpt->verbose > 1) {
if ((reply & MPT_CONTEXT_REPLY) != 0) {
/* Address reply; IOC has something to say */
mpt_print_reply(MPT_REPLY_PTOV(mpt, reply));
} else {
/* Context reply; all went well */
mpt_prt(mpt, "context %u reply OK", reply);
}
}
mpt_done(mpt, reply);
reply = mpt_pop_reply_queue(mpt);
}
return (nrepl != 0);
}
/*
* This routine is called if the 9x9 does not return completion status
* for a command after a CAM specified time.
*/
static void
mpttimeout(void *arg)
{
request_t *req;
union ccb *ccb = arg;
u_int32_t oseq;
mpt_softc_t *mpt;
mpt = ccb->ccb_h.ccb_mpt_ptr;
MPT_LOCK(mpt);
req = ccb->ccb_h.ccb_req_ptr;
oseq = req->sequence;
mpt->timeouts++;
if (mpt_intr(mpt)) {
if (req->sequence != oseq) {
mpt_prt(mpt, "bullet missed in timeout");
MPT_UNLOCK(mpt);
return;
}
mpt_prt(mpt, "bullet U-turned in timeout: got us");
}
mpt_prt(mpt,
"time out on request index = 0x%02x sequence = 0x%08x",
req->index, req->sequence);
mpt_check_doorbell(mpt);
mpt_prt(mpt, "Status %08x; Mask %08x; Doorbell %08x",
mpt_read(mpt, MPT_OFFSET_INTR_STATUS),
mpt_read(mpt, MPT_OFFSET_INTR_MASK),
mpt_read(mpt, MPT_OFFSET_DOORBELL) );
printf("request state %s\n", mpt_req_state(req->debug));
if (ccb != req->ccb) {
printf("time out: ccb %p != req->ccb %p\n",
ccb,req->ccb);
}
mpt_print_scsi_io_request((MSG_SCSI_IO_REQUEST *)req->req_vbuf);
req->debug = REQ_TIMEOUT;
req->ccb = NULL;
req->link.sle_next = (void *) mpt;
(void) timeout(mpttimeout2, (caddr_t)req, hz / 10);
ccb->ccb_h.status = CAM_CMD_TIMEOUT;
ccb->ccb_h.status |= CAM_RELEASE_SIMQ;
mpt->outofbeer = 0;
MPTLOCK_2_CAMLOCK(mpt);
xpt_done(ccb);
CAMLOCK_2_MPTLOCK(mpt);
MPT_UNLOCK(mpt);
}
static void
mpt_timeout(void *arg)
{
request_t *req = arg;
struct scsipi_xfer *xs = req->xfer;
struct scsipi_periph *periph = xs->xs_periph;
mpt_softc_t *mpt = DEV_TO_MPT(
periph->periph_channel->chan_adapter->adapt_dev);
uint32_t oseq;
int s;
scsipi_printaddr(periph);
printf("command timeout\n");
s = splbio();
oseq = req->sequence;
mpt->timeouts++;
if (mpt_intr(mpt)) {
if (req->sequence != oseq) {
mpt_prt(mpt, "recovered from command timeout");
splx(s);
return;
}
}
mpt_prt(mpt,
"timeout on request index = 0x%x, seq = 0x%08x",
req->index, req->sequence);
mpt_check_doorbell(mpt);
mpt_prt(mpt, "Status 0x%08x, Mask 0x%08x, Doorbell 0x%08x",
mpt_read(mpt, MPT_OFFSET_INTR_STATUS),
mpt_read(mpt, MPT_OFFSET_INTR_MASK),
mpt_read(mpt, MPT_OFFSET_DOORBELL));
mpt_prt(mpt, "request state: %s", mpt_req_state(req->debug));
if (mpt->verbose > 1)
mpt_print_scsi_io_request((MSG_SCSI_IO_REQUEST *)req->req_vbuf);
/* XXX WHAT IF THE IOC IS STILL USING IT?? */
req->xfer = NULL;
mpt_free_request(mpt, req);
xs->error = XS_TIMEOUT;
scsipi_done(xs);
splx(s);
}
int
mpt_intr(void *arg)
{
mpt_softc_t *mpt = arg;
int nrepl = 0;
if ((mpt_read(mpt, MPT_OFFSET_INTR_STATUS) & MPT_INTR_REPLY_READY) == 0)
return (0);
nrepl = mpt_drain_queue(mpt);
return (nrepl != 0);
}
static void
mpt_timeout(void *arg)
{
request_t *req = arg;
struct scsipi_xfer *xs;
struct scsipi_periph *periph;
mpt_softc_t *mpt;
uint32_t oseq;
int s, nrepl = 0;
if (req->xfer == NULL) {
printf("mpt_timeout: NULL xfer for request index 0x%x, sequenc 0x%x\n",
req->index, req->sequence);
return;
}
xs = req->xfer;
periph = xs->xs_periph;
mpt = (void *) periph->periph_channel->chan_adapter->adapt_dev;
scsipi_printaddr(periph);
printf("command timeout\n");
s = splbio();
oseq = req->sequence;
mpt->timeouts++;
if (mpt_intr(mpt)) {
if (req->sequence != oseq) {
mpt->success++;
mpt_prt(mpt, "recovered from command timeout");
splx(s);
return;
}
}
/*
* Ensure the IOC is really done giving us data since it appears it can
* sometimes fail to give us interrupts under heavy load.
*/
nrepl = mpt_drain_queue(mpt);
if (nrepl ) {
mpt_prt(mpt, "mpt_timeout: recovered %d commands",nrepl);
}
if (req->sequence != oseq) {
mpt->success++;
splx(s);
return;
}
mpt_prt(mpt,
"timeout on request index = 0x%x, seq = 0x%08x",
req->index, req->sequence);
mpt_check_doorbell(mpt);
mpt_prt(mpt, "Status 0x%08x, Mask 0x%08x, Doorbell 0x%08x",
mpt_read(mpt, MPT_OFFSET_INTR_STATUS),
mpt_read(mpt, MPT_OFFSET_INTR_MASK),
mpt_read(mpt, MPT_OFFSET_DOORBELL));
mpt_prt(mpt, "request state: %s", mpt_req_state(req->debug));
if (mpt->verbose > 1)
mpt_print_scsi_io_request((MSG_SCSI_IO_REQUEST *)req->req_vbuf);
xs->error = XS_TIMEOUT;
splx(s);
mpt_restart(mpt, req);
}