Example #1
0
/*
 * mpt_watchdog - routine that acts as a watchdog.
 */
int
mpt_watchdog(mpt_adap_t *adap)
{
#if 0 // move code to mpt_interrupt, so we don't poll during DMA
	U32		 doorbell;
	int		 state;

	doorbell = rl(DOORBELL);
	state = doorbell & MPI_IOC_STATE_MASK;
	if (state != MPI_IOC_STATE_OPERATIONAL)
	{
		if (state == MPI_IOC_STATE_FAULT)
		{
			printf("%s: MPT Firmware Fault, code %04x\n",
				   adap->name, doorbell & MPI_DOORBELL_DATA_MASK);
			if (wFlag)
				fprintf(logFile, "%s:  MPT Firmware Fault, code %04x\n",
						adap->name, doorbell & MPI_DOORBELL_DATA_MASK);
		}
		adap->restart_needed = TRUE;
	}
#endif

	if (adap->restart_needed == TRUE)
	{
		mpt_restart(adap);
		return 1;
	}
	else if (adap->bus_reset_needed == TRUE)
	{
		adap->bus_reset_needed = FALSE;
		mpt_bus_reset(adap);
	}

	return 0;
}
static void
mpt_done(mpt_softc_t *mpt, uint32_t reply)
{
	struct scsipi_xfer *xs = NULL;
	struct scsipi_periph *periph;
	int index;
	request_t *req;
	MSG_REQUEST_HEADER *mpt_req;
	MSG_SCSI_IO_REPLY *mpt_reply;
	int restart = 0; /* nonzero if we need to restart the IOC*/

	if (__predict_true((reply & MPT_CONTEXT_REPLY) == 0)) {
		/* context reply (ok) */
		mpt_reply = NULL;
		index = reply & MPT_CONTEXT_MASK;
	} else {
		/* address reply (error) */

		/* XXX BUS_DMASYNC_POSTREAD XXX */
		mpt_reply = MPT_REPLY_PTOV(mpt, reply);
		if (mpt_reply != NULL) {
			if (mpt->verbose > 1) {
				uint32_t *pReply = (uint32_t *) mpt_reply;

				mpt_prt(mpt, "Address Reply (index %u):",
				    le32toh(mpt_reply->MsgContext) & 0xffff);
				mpt_prt(mpt, "%08x %08x %08x %08x", pReply[0],
				    pReply[1], pReply[2], pReply[3]);
				mpt_prt(mpt, "%08x %08x %08x %08x", pReply[4],
				    pReply[5], pReply[6], pReply[7]);
				mpt_prt(mpt, "%08x %08x %08x %08x", pReply[8],
				    pReply[9], pReply[10], pReply[11]);
			}
			index = le32toh(mpt_reply->MsgContext);
		} else
			index = reply & MPT_CONTEXT_MASK;
	}

	/*
	 * Address reply with MessageContext high bit set.
	 * This is most likely a notify message, so we try
	 * to process it, then free it.
	 */
	if (__predict_false((index & 0x80000000) != 0)) {
		if (mpt_reply != NULL)
			mpt_ctlop(mpt, mpt_reply, reply);
		else
			mpt_prt(mpt, "%s: index 0x%x, NULL reply", __func__,
			    index);
		return;
	}

	/* Did we end up with a valid index into the table? */
	if (__predict_false(index < 0 || index >= MPT_MAX_REQUESTS(mpt))) {
		mpt_prt(mpt, "%s: invalid index (0x%x) in reply", __func__,
		    index);
		return;
	}

	req = &mpt->request_pool[index];

	/* Make sure memory hasn't been trashed. */
	if (__predict_false(req->index != index)) {
		mpt_prt(mpt, "%s: corrupted request_t (0x%x)", __func__,
		    index);
		return;
	}

	MPT_SYNC_REQ(mpt, req, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE);
	mpt_req = req->req_vbuf;

	/* Short cut for task management replies; nothing more for us to do. */
	if (__predict_false(mpt_req->Function == MPI_FUNCTION_SCSI_TASK_MGMT)) {
		if (mpt->verbose > 1)
			mpt_prt(mpt, "%s: TASK MGMT", __func__);
		KASSERT(req == mpt->mngt_req);
		mpt->mngt_req = NULL;
		goto done;
	}

	if (__predict_false(mpt_req->Function == MPI_FUNCTION_PORT_ENABLE))
		goto done;

	/*
	 * At this point, it had better be a SCSI I/O command, but don't
	 * crash if it isn't.
	 */
	if (__predict_false(mpt_req->Function !=
			    MPI_FUNCTION_SCSI_IO_REQUEST)) {
		if (mpt->verbose > 1)
			mpt_prt(mpt, "%s: unknown Function 0x%x (0x%x)",
			    __func__, mpt_req->Function, index);
		goto done;
	}

	/* Recover scsipi_xfer from the request structure. */
	xs = req->xfer;

	/* Can't have a SCSI command without a scsipi_xfer. */
	if (__predict_false(xs == NULL)) {
		mpt_prt(mpt,
		    "%s: no scsipi_xfer, index = 0x%x, seq = 0x%08x", __func__,
		    req->index, req->sequence);
		mpt_prt(mpt, "request state: %s", mpt_req_state(req->debug));
		mpt_prt(mpt, "mpt_request:");
		mpt_print_scsi_io_request((MSG_SCSI_IO_REQUEST *)req->req_vbuf);

		if (mpt_reply != NULL) {
			mpt_prt(mpt, "mpt_reply:");
			mpt_print_reply(mpt_reply);
		} else {
			mpt_prt(mpt, "context reply: 0x%08x", reply);
		}
		goto done;
	}

	callout_stop(&xs->xs_callout);

	periph = xs->xs_periph;

	/*
	 * If we were a data transfer, unload the map that described
	 * the data buffer.
	 */
	if (__predict_true(xs->datalen != 0)) {
		bus_dmamap_sync(mpt->sc_dmat, req->dmap, 0,
		    req->dmap->dm_mapsize,
		    (xs->xs_control & XS_CTL_DATA_IN) ? BUS_DMASYNC_POSTREAD
						      : BUS_DMASYNC_POSTWRITE);
		bus_dmamap_unload(mpt->sc_dmat, req->dmap);
	}

	if (__predict_true(mpt_reply == NULL)) {
		/*
		 * Context reply; report that the command was
		 * successful!
		 *
		 * Also report the xfer mode, if necessary.
		 */
		if (__predict_false(mpt->mpt_report_xfer_mode != 0)) {
			if ((mpt->mpt_report_xfer_mode &
			     (1 << periph->periph_target)) != 0)
				mpt_get_xfer_mode(mpt, periph);
		}
		xs->error = XS_NOERROR;
		xs->status = SCSI_OK;
		xs->resid = 0;
		mpt_free_request(mpt, req);
		scsipi_done(xs);
		return;
	}

	xs->status = mpt_reply->SCSIStatus;
	switch (le16toh(mpt_reply->IOCStatus) & MPI_IOCSTATUS_MASK) {
	case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:
		xs->error = XS_DRIVER_STUFFUP;
		mpt_prt(mpt, "%s: IOC overrun!", __func__);
		break;

	case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:
		/*
		 * Yikes!  Tagged queue full comes through this path!
		 *
		 * So we'll change it to a status error and anything
		 * that returns status should probably be a status
		 * error as well.
		 */
		xs->resid = xs->datalen - le32toh(mpt_reply->TransferCount);
		if (mpt_reply->SCSIState &
		    MPI_SCSI_STATE_NO_SCSI_STATUS) {
			xs->error = XS_DRIVER_STUFFUP;
			break;
		}
		/* FALLTHROUGH */
	case MPI_IOCSTATUS_SUCCESS:
	case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:
		switch (xs->status) {
		case SCSI_OK:
			/* Report the xfer mode, if necessary. */
			if ((mpt->mpt_report_xfer_mode &
			     (1 << periph->periph_target)) != 0)
				mpt_get_xfer_mode(mpt, periph);
			xs->resid = 0;
			break;

		case SCSI_CHECK:
			xs->error = XS_SENSE;
			break;

		case SCSI_BUSY:
		case SCSI_QUEUE_FULL:
			xs->error = XS_BUSY;
			break;

		default:
			scsipi_printaddr(periph);
			printf("invalid status code %d\n", xs->status);
			xs->error = XS_DRIVER_STUFFUP;
			break;
		}
		break;

	case MPI_IOCSTATUS_BUSY:
	case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES:
		xs->error = XS_RESOURCE_SHORTAGE;
		break;

	case MPI_IOCSTATUS_SCSI_INVALID_BUS:
	case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:
	case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
		xs->error = XS_SELTIMEOUT;
		break;

	case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
		xs->error = XS_DRIVER_STUFFUP;
		mpt_prt(mpt, "%s: IOC SCSI residual mismatch!", __func__);
		restart = 1;
		break;

	case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:
		/* XXX What should we do here? */
		mpt_prt(mpt, "%s: IOC SCSI task terminated!", __func__);
		restart = 1;
		break;

	case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
		/* XXX */
		xs->error = XS_DRIVER_STUFFUP;
		mpt_prt(mpt, "%s: IOC SCSI task failed!", __func__);
		restart = 1;
		break;

	case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:
		/* XXX */
		xs->error = XS_DRIVER_STUFFUP;
		mpt_prt(mpt, "%s: IOC task terminated!", __func__);
		restart = 1;
		break;

	case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:
		/* XXX This is a bus-reset */
		xs->error = XS_DRIVER_STUFFUP;
		mpt_prt(mpt, "%s: IOC SCSI bus reset!", __func__);
		restart = 1;
		break;

	case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:
		/*
		 * FreeBSD and Linux indicate this is a phase error between
		 * the IOC and the drive itself. When this happens, the IOC
		 * becomes unhappy and stops processing all transactions.  
		 * Call mpt_timeout which knows how to get the IOC back
		 * on its feet.
		 */
		 mpt_prt(mpt, "%s: IOC indicates protocol error -- "
		     "recovering...", __func__);
		xs->error = XS_TIMEOUT;
		restart = 1;

		break;

	default:
		/* XXX unrecognized HBA error */
		xs->error = XS_DRIVER_STUFFUP;
		mpt_prt(mpt, "%s: IOC returned unknown code: 0x%x", __func__,
		    le16toh(mpt_reply->IOCStatus));
		restart = 1;
		break;
	}

	if (mpt_reply != NULL) {
		if (mpt_reply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
			memcpy(&xs->sense.scsi_sense, req->sense_vbuf,
			    sizeof(xs->sense.scsi_sense));
		} else if (mpt_reply->SCSIState &
		    MPI_SCSI_STATE_AUTOSENSE_FAILED) {
			/*
			 * This will cause the scsipi layer to issue
			 * a REQUEST SENSE.
			 */
			if (xs->status == SCSI_CHECK)
				xs->error = XS_BUSY;
		}
	}

 done:
	if (mpt_reply != NULL && le16toh(mpt_reply->IOCStatus) & 
	MPI_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) {
		mpt_prt(mpt, "%s: IOC has error - logging...\n", __func__);
		mpt_ctlop(mpt, mpt_reply, reply);
	}

	/* If IOC done with this request, free it up. */
	if (mpt_reply == NULL || (mpt_reply->MsgFlags & 0x80) == 0)
		mpt_free_request(mpt, req);

	/* If address reply, give the buffer back to the IOC. */
	if (mpt_reply != NULL)
		mpt_free_reply(mpt, (reply << 1));

	if (xs != NULL)
		scsipi_done(xs);

	if (restart) {
		mpt_prt(mpt, "%s: IOC fatal error: restarting...", __func__);
		mpt_restart(mpt, NULL);
	}
}
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);
}