isp.c

基于组件方式开发操作系统的OSKIT源代码

				"Mailbox Register test didn't complete");
			return;
		}
		if (mbs.param[1] != 0xdead || mbs.param[2] != 0xbeef ||
		    mbs.param[3] != 0xffff || mbs.param[4] != 0x1111 ||
		    mbs.param[5] != 0xa5a5) {
			isp_dumpregs(isp, "Register Test Failed");
			return;
		}

	}

	/*
	 * Download new Firmware, unless requested not to do so.
	 * This is made slightly trickier in some cases where the
	 * firmware of the ROM revision is newer than the revision
	 * compiled into the driver. So, where we used to compare
	 * versions of our f/w and the ROM f/w, now we just see
	 * whether we have f/w at all and whether a config flag
	 * has disabled our download.
	 */
	if ((isp->isp_mdvec->dv_fwlen == 0) ||
	    (isp->isp_confopts & ISP_CFG_NORELOAD)) {
		dodnld = 0;
	}

	if (dodnld && isp->isp_mdvec->dv_fwlen) {
		for (i = 0; i < isp->isp_mdvec->dv_fwlen; i++) {
			mbs.param[0] = MBOX_WRITE_RAM_WORD;
			mbs.param[1] = isp->isp_mdvec->dv_codeorg + i;
			mbs.param[2] = isp->isp_mdvec->dv_ispfw[i];
			isp_mboxcmd(isp, &mbs);
			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
				PRINTF("%s: F/W download failed at word %d\n",
				    isp->isp_name, i);
				dodnld = 0;
				goto again;
			}
		}

		/*
		 * Verify that it downloaded correctly.
		 */
		mbs.param[0] = MBOX_VERIFY_CHECKSUM;
		mbs.param[1] = isp->isp_mdvec->dv_codeorg;
		isp_mboxcmd(isp, &mbs);
		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
			isp_dumpregs(isp, "ram checksum failure");
			return;
		}
	} else {
		IDPRINTF(3, ("%s: skipping f/w download\n", isp->isp_name));
	}

	/*
	 * Now start it rolling.
	 *
	 * If we didn't actually download f/w,
	 * we still need to (re)start it.
	 */

	mbs.param[0] = MBOX_EXEC_FIRMWARE;
	if (isp->isp_mdvec->dv_codeorg)
		mbs.param[1] = isp->isp_mdvec->dv_codeorg;
	else
		mbs.param[1] = 0x1000;
	isp_mboxcmd(isp, &mbs);

	if (isp->isp_type & ISP_HA_SCSI) {
		/*
		 * Set CLOCK RATE, but only if asked to.
		 */
		if (isp->isp_clock) {
			mbs.param[0] = MBOX_SET_CLOCK_RATE;
			mbs.param[1] = isp->isp_clock;
			isp_mboxcmd(isp, &mbs);
			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
				isp_dumpregs(isp, "failed to set CLOCKRATE");
				/* but continue */
			} else {
				IDPRINTF(3, ("%s: setting input clock to %d\n",
				    isp->isp_name, isp->isp_clock));
			}
		}
	}
	mbs.param[0] = MBOX_ABOUT_FIRMWARE;
	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		isp_dumpregs(isp, "ABOUT FIRMWARE command failed");
		return;
	}
	PRINTF("%s: Board Revision %s, %s F/W Revision %d.%d.%d\n",
		isp->isp_name, revname, dodnld? "loaded" : "resident",
		mbs.param[1], mbs.param[2], mbs.param[3]);
	if (IS_FC(isp)) {
		if (ISP_READ(isp, BIU2100_CSR) & BIU2100_PCI64) {
			PRINTF("%s: in 64-Bit PCI slot\n", isp->isp_name);
		}
	}
	isp->isp_fwrev[0] = mbs.param[1];
	isp->isp_fwrev[1] = mbs.param[2];
	isp->isp_fwrev[2] = mbs.param[3];
	if (isp->isp_romfw_rev[0] || isp->isp_romfw_rev[1] ||
	    isp->isp_romfw_rev[2]) {
		PRINTF("%s: Last F/W revision was %d.%d.%d\n", isp->isp_name,
		    isp->isp_romfw_rev[0], isp->isp_romfw_rev[1],
		    isp->isp_romfw_rev[2]);
	}
	isp_fw_state(isp);
	/*
	 * Set up DMA for the request and result mailboxes.
	 */
	if (ISP_MBOXDMASETUP(isp) != 0) {
		PRINTF("%s: can't setup dma mailboxes\n", isp->isp_name);
		return;
	}
	isp->isp_state = ISP_RESETSTATE;
}

/*
 * Initialize Parameters of Hardware to a known state.
 *
 * Locks are held before coming here.
 */

void
isp_init(isp)
	struct ispsoftc *isp;
{
	/*
	 * Must do this first to get defaults established.
	 */
	isp_setdfltparm(isp, 0);
	if (IS_12X0(isp)) {
		isp_setdfltparm(isp, 1);
	}

	if (IS_FC(isp)) {
		isp_fibre_init(isp);
	} else {
		isp_scsi_init(isp);
	}
}

static void
isp_scsi_init(isp)
	struct ispsoftc *isp;
{
	sdparam *sdp_chan0, *sdp_chan1;
	mbreg_t mbs;

	sdp_chan0 = isp->isp_param;
	sdp_chan1 = sdp_chan0;
	if (IS_12X0(isp)) {
		sdp_chan1++;
	}

	/* First do overall per-card settings. */

	/*
	 * If we have fast memory timing enabled, turn it on.
	 */
	if (isp->isp_fast_mttr) {
		ISP_WRITE(isp, RISC_MTR, 0x1313);
	}

	/*
	 * Set Retry Delay and Count.
	 * You set both channels at the same time.
	 */
	mbs.param[0] = MBOX_SET_RETRY_COUNT;
	mbs.param[1] = sdp_chan0->isp_retry_count;
	mbs.param[2] = sdp_chan0->isp_retry_delay;
	mbs.param[6] = sdp_chan1->isp_retry_count;
	mbs.param[7] = sdp_chan1->isp_retry_delay;

	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: failed to set retry count and retry delay\n",
		    isp->isp_name);
		return;
	}

	/*
	 * Set ASYNC DATA SETUP time. This is very important.
	 */
	mbs.param[0] = MBOX_SET_ASYNC_DATA_SETUP_TIME;
	mbs.param[1] = sdp_chan0->isp_async_data_setup;
	mbs.param[2] = sdp_chan1->isp_async_data_setup;
	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: failed to set asynchronous data setup time\n",
		    isp->isp_name);
		return;
	}

	/*
	 * Set ACTIVE Negation State.
	 */
	mbs.param[0] = MBOX_SET_ACT_NEG_STATE;
	mbs.param[1] =
	    (sdp_chan0->isp_req_ack_active_neg << 4) |
	    (sdp_chan0->isp_data_line_active_neg << 5);
	mbs.param[2] =
	    (sdp_chan1->isp_req_ack_active_neg << 4) |
	    (sdp_chan1->isp_data_line_active_neg << 5);

	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: failed to set active negation state "
		    "(%d,%d),(%d,%d)\n", isp->isp_name,
		    sdp_chan0->isp_req_ack_active_neg,
		    sdp_chan0->isp_data_line_active_neg,
		    sdp_chan1->isp_req_ack_active_neg,
		    sdp_chan1->isp_data_line_active_neg);
		/*
		 * But don't return.
		 */
	}

	/*
	 * Set the Tag Aging limit
	 */
	mbs.param[0] = MBOX_SET_TAG_AGE_LIMIT;
	mbs.param[1] = sdp_chan0->isp_tag_aging;
	mbs.param[2] = sdp_chan1->isp_tag_aging;
	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: failed to set tag age limit (%d,%d)\n",
		    isp->isp_name, sdp_chan0->isp_tag_aging,
		    sdp_chan1->isp_tag_aging);
		return;
	}

	/*
	 * Set selection timeout.
	 */
	mbs.param[0] = MBOX_SET_SELECT_TIMEOUT;
	mbs.param[1] = sdp_chan0->isp_selection_timeout;
	mbs.param[2] = sdp_chan1->isp_selection_timeout;
	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: failed to set selection timeout\n", isp->isp_name);
		return;
	}

	/* now do per-channel settings */
	isp_scsi_channel_init(isp, 0);
	if (IS_12X0(isp))
		isp_scsi_channel_init(isp, 1);

	/*
	 * Now enable request/response queues
	 */

	mbs.param[0] = MBOX_INIT_RES_QUEUE;
	mbs.param[1] = RESULT_QUEUE_LEN;
	mbs.param[2] = DMA_MSW(isp->isp_result_dma);
	mbs.param[3] = DMA_LSW(isp->isp_result_dma);
	mbs.param[4] = 0;
	mbs.param[5] = 0;
	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: set of response queue failed\n", isp->isp_name);
		return;
	}
	isp->isp_residx = 0;

	mbs.param[0] = MBOX_INIT_REQ_QUEUE;
	mbs.param[1] = RQUEST_QUEUE_LEN;
	mbs.param[2] = DMA_MSW(isp->isp_rquest_dma);
	mbs.param[3] = DMA_LSW(isp->isp_rquest_dma);
	mbs.param[4] = 0;
	mbs.param[5] = 0;
	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: set of request queue failed\n", isp->isp_name);
		return;
	}
	isp->isp_reqidx = isp->isp_reqodx = 0;

	/*
	 *  Turn on Fast Posting, LVD transitions
	 */

	if (IS_1080(isp) ||
	    ISP_FW_REVX(isp->isp_fwrev) >= ISP_FW_REV(7, 55, 0)) {
		mbs.param[0] = MBOX_SET_FW_FEATURES;
#ifndef	ISP_NO_FASTPOST_SCSI
		mbs.param[1] |= FW_FEATURE_FAST_POST;
#else
		mbs.param[1] = 0;
#endif
		if (IS_1080(isp))
			mbs.param[1] |= FW_FEATURE_LVD_NOTIFY;
		if (mbs.param[1] != 0) {
			isp_mboxcmd(isp, &mbs);
			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
				PRINTF("%s: unable enable FW features\n",
				    isp->isp_name);
			}
		}
	}

	/*
	 * Let the outer layers decide whether to issue a SCSI bus reset.
	 */
	isp->isp_state = ISP_INITSTATE;
}

static void
isp_scsi_channel_init(isp, channel)
	struct ispsoftc *isp;
	int channel;
{
	sdparam *sdp;
	mbreg_t mbs;
	int tgt;

	sdp = isp->isp_param;
	sdp += channel;

	/*
	 * Set (possibly new) Initiator ID.
	 */
	mbs.param[0] = MBOX_SET_INIT_SCSI_ID;
	mbs.param[1] = (channel << 7) | sdp->isp_initiator_id;
	isp_mboxcmd(isp, &mbs);
	if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
		PRINTF("%s: cannot set initiator id on bus %d to %d\n",
		    isp->isp_name, channel, sdp->isp_initiator_id);
		return;
	}

	/*
	 * Set current per-target parameters to a safe minimum.
	 */
	for (tgt = 0; tgt < MAX_TARGETS; tgt++) {
		int maxlun, lun;
		u_int16_t sdf;

		if (sdp->isp_devparam[tgt].dev_enable == 0) {
			PRINTF("%s: skipping settings for target %d bus %d\n",
			    isp->isp_name, tgt, channel);
			continue;
		}

		/*
		 * If we're in LVD mode, then we pretty much should
		 * only disable tagged queuing.
		 */
		if (IS_1080(isp) && sdp->isp_lvdmode) {
			sdf = DPARM_DEFAULT & ~DPARM_TQING;
		} else {
			sdf = DPARM_SAFE_DFLT;
			/*
			 * It is not quite clear when this changed over so that
			 * we could force narrow and async, so assume >= 7.55.
			 */
			if (ISP_FW_REVX(isp->isp_fwrev) >=
			    ISP_FW_REV(7, 55, 0)) {
				sdf |= DPARM_NARROW | DPARM_ASYNC;
			}
		}
		mbs.param[0] = MBOX_SET_TARGET_PARAMS;
		mbs.param[1] = (tgt << 8) | (channel << 15);
		mbs.param[2] = sdf;
		mbs.param[3] =
		    (sdp->isp_devparam[tgt].sync_offset << 8) |
		    (sdp->isp_devparam[tgt].sync_period);
		isp_mboxcmd(isp, &mbs);
		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
			sdf = DPARM_SAFE_DFLT;
			mbs.param[0] = MBOX_SET_TARGET_PARAMS;
			mbs.param[1] = (tgt << 8) | (channel << 15);
			mbs.param[2] = sdf;
			mbs.param[3] =
			    (sdp->isp_devparam[tgt].sync_offset << 8) |
			    (sdp->isp_devparam[tgt].sync_period);
			isp_mboxcmd(isp, &mbs);
			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
				PRINTF("%s: failed even to set defaults for "
				    "target %d\n", isp->isp_name, tgt);
				continue;
			}
		}

#if	0
		/*
		 * We don't update dev_flags with what we've set
		 * because that's not the ultimate goal setting.
		 * If we succeed with the command, we *do* update
		 * cur_dflags by getting target parameters.
		 */
		mbs.param[0] = MBOX_GET_TARGET_PARAMS;
		mbs.param[1] = (tgt << 8) | (channel << 15);
		isp_mboxcmd(isp, &mbs);
		if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
			/*
			 * Urrr.... We'll set cur_dflags to DPARM_SAFE_DFLT so
			 * we don't try and do tags if tags aren't enabled.
			 */
			sdp->isp_devparam[tgt].cur_dflags = DPARM_SAFE_DFLT;
		} else {
			sdp->isp_devparam[tgt].cur_dflags = mbs.param[2];
			sdp->isp_devparam[tgt].cur_offset = mbs.param[3] >> 8;
			sdp->isp_devparam[tgt].cur_period = mbs.param[3] & 0xff;
		}
		IDPRINTF(3, ("%s: set flags 0x%x got 0x%x back for target %d\n",
		    isp->isp_name, sdf, mbs.param[2], tgt));
#else
		/*
		 * We don't update any information because we need to run
		 * at least one command per target to cause a new state
		 * to be latched.
		 */
#endif
		/*
		 * Ensure that we don't believe tagged queuing is enabled yet.
		 * It turns out that sometimes the ISP just ignores our
		 * attempts to set parameters for devices that it hasn't
		 * seen yet.
		 */
		sdp->isp_devparam[tgt].cur_dflags &= ~DPARM_TQING;
		if (ISP_FW_REVX(isp->isp_fwrev) >= ISP_FW_REV(7, 55, 0))
			maxlun = 32;
		else
			maxlun = 8;
		for (lun = 0; lun < maxlun; lun++) {
			mbs.param[0] = MBOX_SET_DEV_QUEUE_PARAMS;
			mbs.param[1] = (channel << 15) | (tgt << 8) | lun;
			mbs.param[2] = sdp->isp_max_queue_depth;
			mbs.param[3] = sdp->isp_devparam[tgt].exc_throttle;
			isp_mboxcmd(isp, &mbs);
			if (mbs.param[0] != MBOX_COMMAND_COMPLETE) {
				PRINTF("%s: failed to set device queue "
				    "parameters for target %d, lun %d\n",
				    isp->isp_name, tgt, lun);
				break;
			}
		}
	}
}

/*
 * Fibre Channel specific initialization.
 *
 * Locks are held before coming here.
 */
static void
isp_fibre_init(isp)
	struct ispsoftc *isp;
{
	fcparam *fcp;
	isp_icb_t *icbp;
	mbreg_t mbs;
	int count, loopid;

	fcp = isp->isp_param;

	/*
	 * For systems that don't have BIOS methods for which
	 * we can easily change the NVRAM based loopid, we'll
	 * override that here. Note that when we initialize
	 * the firmware we may get back a different loopid than
	 * we asked for anyway. XXX This is probably not the
	 * best way to figure this out XXX
	 */
#ifndef	__i386__
	loopid = DEFAULT_LOOPID;
#else
	loopid = fcp->isp_loopid;
#endif

#if	defined(ISP2100_FABRIC) && defined(ISP2100_SCCLUN)
	PRINTF("%s: Fabric Support, Expanded Lun Support\n", isp->isp_name);
#endif
#if	defined(ISP2100_FABRIC) && !defined(ISP2100_SCCLUN)
	PRINTF("%s: Fabric Support\n", isp->isp_name);
#endif
#if	!defined(ISP2100_FABRIC) && defined(ISP2100_SCCLUN)
	PRINTF("%s: Expanded Lun Support\n", isp->isp_name);
#endif

	icbp = (isp_icb_t *) fcp->isp_scratch;
	MEMZERO(icbp, sizeof (*icbp));

	icbp->icb_version = ICB_VERSION1;
#ifdef	ISP_TARGET_MODE
	fcp->isp_fwoptions = ICBOPT_TGT_ENABLE|ICBOPT_INI_TGTTYPE;
#else
	fcp->isp_fwoptions = 0;
#endif
	fcp->isp_fwoptions |= ICBOPT_INI_ADISC|ICBOPT_FAIRNESS;
	fcp->isp_fwoptions |= ICBOPT_PDBCHANGE_AE;
	fcp->isp_fwoptions |= ICBOPT_HARD_ADDRESS;
#ifndef	ISP_NO_FASTPOST_FC
	fcp->isp_fwoptions |= ICBOPT_FAST_POST;
#endif
#ifdef	CHECKME
	fcp->isp_fwoptions |= ICBOPT_USE_PORTNAME;
#endif
#ifdef	ISP2100_FABRIC
	fcp->isp_fwoptions |= ICBOPT_FULL_LOGIN;
#endif

	icbp->icb_fwoptions = fcp->isp_fwoptions;
	icbp->icb_maxfrmlen = fcp->isp_maxfrmlen;