freebsd-dev/sys/dev/isp/isp_freebsd.c

/* $Id: isp_freebsd.c,v 1.18 1999/05/11 05:10:06 mjacob Exp $ */
/* release_5_11_99 */
/*
 * Platform (FreeBSD) dependent common attachment code for Qlogic adapters.
 *
 *---------------------------------------
 * Copyright (c) 1997, 1998 by Matthew Jacob
 * NASA/Ames Research Center
 * All rights reserved.
 *---------------------------------------
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice immediately at the beginning of the file, without modification,
 *    this list of conditions, and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */
#include <dev/isp/isp_freebsd.h>

#if	__FreeBSD_version >= 300004

static void isp_cam_async __P((void *, u_int32_t, struct cam_path *, void *));
static void isp_poll __P((struct cam_sim *));
static void isp_action __P((struct cam_sim *, union ccb *));

void
isp_attach(struct ispsoftc *isp)
{
	int primary, secondary;
	struct ccb_setasync csa;
	struct cam_devq *devq;
	struct cam_sim *sim;
	struct cam_path *path;

	/*
	 * Establish (in case of 12X0) which bus is the primary.
	 */

	primary = 0;
	secondary = 1;

	/*
	 * Create the device queue for our SIM(s).
	 */
	devq = cam_simq_alloc(MAXISPREQUEST);
	if (devq == NULL) {
		return;
	}

	/*
	 * Construct our SIM entry.
	 */
	sim = cam_sim_alloc(isp_action, isp_poll, "isp", isp,
	    isp->isp_unit, 1, MAXISPREQUEST, devq);
	if (sim == NULL) {
		cam_simq_free(devq);
		return;
	}
	if (xpt_bus_register(sim, primary) != CAM_SUCCESS) {
		cam_sim_free(sim, TRUE);
		return;
	}

	if (xpt_create_path(&path, NULL, cam_sim_path(sim),
	    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
		xpt_bus_deregister(cam_sim_path(sim));
		cam_sim_free(sim, TRUE);
		return;
	}

	xpt_setup_ccb(&csa.ccb_h, path, 5);
	csa.ccb_h.func_code = XPT_SASYNC_CB;
	csa.event_enable = AC_LOST_DEVICE;
	csa.callback = isp_cam_async;
	csa.callback_arg = sim;
	xpt_action((union ccb *)&csa);
	isp->isp_sim = sim;
	isp->isp_path = path;

	/*
	 * If we have a second channel, construct SIM entry for that.
	 */
	if (IS_12X0(isp)) {
		sim = cam_sim_alloc(isp_action, isp_poll, "isp", isp,
		    isp->isp_unit, 1, MAXISPREQUEST, devq);
		if (sim == NULL) {
			xpt_bus_deregister(cam_sim_path(isp->isp_sim));
			xpt_free_path(isp->isp_path);
			cam_simq_free(devq);
			return;
		}
		if (xpt_bus_register(sim, secondary) != CAM_SUCCESS) {
			xpt_bus_deregister(cam_sim_path(isp->isp_sim));
			xpt_free_path(isp->isp_path);
			cam_sim_free(sim, TRUE);
			return;
		}

		if (xpt_create_path(&path, NULL, cam_sim_path(sim),
		    CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
			xpt_bus_deregister(cam_sim_path(isp->isp_sim));
			xpt_free_path(isp->isp_path);
			xpt_bus_deregister(cam_sim_path(sim));
			cam_sim_free(sim, TRUE);
			return;
		}

		xpt_setup_ccb(&csa.ccb_h, path, 5);
		csa.ccb_h.func_code = XPT_SASYNC_CB;
		csa.event_enable = AC_LOST_DEVICE;
		csa.callback = isp_cam_async;
		csa.callback_arg = sim;
		xpt_action((union ccb *)&csa);
		isp->isp_sim2 = sim;
		isp->isp_path2 = path;
	}
	if (isp->isp_state == ISP_INITSTATE)
		isp->isp_state = ISP_RUNSTATE;
}

static void
isp_cam_async(void *cbarg, u_int32_t code, struct cam_path *path, void *arg)
{
	struct cam_sim *sim;
	struct ispsoftc *isp;

	sim = (struct cam_sim *)cbarg;
	isp = (struct ispsoftc *) cam_sim_softc(sim);
	switch (code) {
	case AC_LOST_DEVICE:
		if (isp->isp_type & ISP_HA_SCSI) {
			u_int16_t oflags, nflags;
			sdparam *sdp = isp->isp_param;
			int s, tgt = xpt_path_target_id(path);

			s = splcam();
			sdp += cam_sim_bus(sim);
			isp->isp_update |= (1 << cam_sim_bus(sim));

			nflags = DPARM_SAFE_DFLT;
			if (ISP_FW_REVX(isp->isp_fwrev) >=
			    ISP_FW_REV(7, 55, 0)) {
				nflags |= DPARM_NARROW | DPARM_ASYNC;
			}
			oflags = sdp->isp_devparam[tgt].dev_flags;
			sdp->isp_devparam[tgt].dev_flags = nflags;
			sdp->isp_devparam[tgt].dev_update = 1;
			(void) isp_control(isp, ISPCTL_UPDATE_PARAMS, NULL);
			sdp->isp_devparam[tgt].dev_flags = oflags;
			(void) splx(s);
		}
		break;
	default:
		break;
	}
}

static void
isp_poll(struct cam_sim *sim)
{
	isp_intr((struct ispsoftc *) cam_sim_softc(sim));
}


static void
isp_action(struct cam_sim *sim, union ccb *ccb)
{
	int s, tgt, error;
	struct ispsoftc *isp;
	struct ccb_trans_settings *cts;

	CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("isp_action\n"));
	
	isp = (struct ispsoftc *)cam_sim_softc(sim);
	ccb->ccb_h.sim_priv.entries[0].field = 0;
	ccb->ccb_h.sim_priv.entries[1].ptr = isp;
	/*
	 * This should only happen for Fibre Channel adapters.
	 * We want to pass through all but XPT_SCSI_IO (e.g.,
	 * path inquiry) but fail if we can't get good Fibre
	 * Channel link status.
	 */
	if (ccb->ccb_h.func_code == XPT_SCSI_IO &&
	    isp->isp_state != ISP_RUNSTATE) {
		s = splcam();
		DISABLE_INTS(isp);
		isp_init(isp);
		if (isp->isp_state != ISP_INITSTATE) {
			(void) splx(s);
			/*
			 * Lie. Say it was a selection timeout.
			 */
			ccb->ccb_h.status = CAM_SEL_TIMEOUT;
			xpt_done(ccb);
			return;
		}
		isp->isp_state = ISP_RUNSTATE;
		ENABLE_INTS(isp);
		(void) splx(s);
	}
	
	IDPRINTF(4, ("%s: isp_action code %x\n", isp->isp_name,
	    ccb->ccb_h.func_code));

	switch (ccb->ccb_h.func_code) {
	case XPT_SCSI_IO:	/* Execute the requested I/O operation */
		/*
		 * Do a couple of preliminary checks...
		 */
		if ((ccb->ccb_h.flags & CAM_CDB_POINTER) != 0) {
			if ((ccb->ccb_h.flags & CAM_CDB_PHYS) != 0) {
				ccb->ccb_h.status = CAM_REQ_INVALID;
				xpt_done(ccb);
				break;
			}
		}

		
		if (isp->isp_type & ISP_HA_SCSI) {
			if (ccb->ccb_h.target_id > (MAX_TARGETS-1)) {
				ccb->ccb_h.status = CAM_PATH_INVALID;
			} else if (ISP_FW_REVX(isp->isp_fwrev) >=
			    ISP_FW_REV(7, 55, 0)) {
				/*
				 * Too much breakage.
				 */
#if	0
				if (ccb->ccb_h.target_lun > 31) {
					ccb->ccb_h.status = CAM_PATH_INVALID;
				}
#else
				if (ccb->ccb_h.target_lun > 7) {
					ccb->ccb_h.status = CAM_PATH_INVALID;
				}
#endif
			} else if (ccb->ccb_h.target_lun > 7) {
				ccb->ccb_h.status = CAM_PATH_INVALID;
			}
		} else {
			if (ccb->ccb_h.target_id > (MAX_FC_TARG-1)) {
				ccb->ccb_h.status = CAM_PATH_INVALID;
#ifdef	SCCLUN
			} else if (ccb->ccb_h.target_lun > 15) {
				ccb->ccb_h.status = CAM_PATH_INVALID;
#else
			} else if (ccb->ccb_h.target_lun > 65535) {
				ccb->ccb_h.status = CAM_PATH_INVALID;
#endif
			}
		}
		if (ccb->ccb_h.status == CAM_PATH_INVALID) {
			printf("%s: invalid tgt/lun (%d.%d) in XPT_SCSI_IO\n",
			    isp->isp_name, ccb->ccb_h.target_id,
			    ccb->ccb_h.target_lun);
			xpt_done(ccb);
			break;
		}
		s = splcam();
		DISABLE_INTS(isp);
		switch (ispscsicmd((ISP_SCSI_XFER_T *) ccb)) {
		case CMD_QUEUED:
			ccb->ccb_h.status |= CAM_SIM_QUEUED;
			break;
		case CMD_EAGAIN:
			if (!(isp->isp_osinfo.simqfrozen & SIMQFRZ_RESOURCE)) {
				xpt_freeze_simq(sim, 1);
				isp->isp_osinfo.simqfrozen |= SIMQFRZ_RESOURCE;
			}
			ccb->ccb_h.status &= ~CAM_STATUS_MASK;
                        ccb->ccb_h.status |= CAM_REQUEUE_REQ;
			xpt_done(ccb);
			break;
		case CMD_COMPLETE:
			/*
			 * Just make sure that we didn't get it returned
			 * as completed, but with the request still in
			 * progress. In theory, 'cannot happen'.
			 */
			if ((ccb->ccb_h.status & CAM_STATUS_MASK) ==
			    CAM_REQ_INPROG) {
				ccb->ccb_h.status &= ~CAM_STATUS_MASK;
				ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
			}
			xpt_done(ccb);
			break;
		}
		ENABLE_INTS(isp);
		splx(s);
		break;

	case XPT_EN_LUN:		/* Enable LUN as a target */
	case XPT_TARGET_IO:		/* Execute target I/O request */
	case XPT_ACCEPT_TARGET_IO:	/* Accept Host Target Mode CDB */
	case XPT_CONT_TARGET_IO:	/* Continue Host Target I/O Connection*/
		ccb->ccb_h.status = CAM_REQ_INVALID;
		xpt_done(ccb);
		break;

	case XPT_RESET_DEV:		/* BDR the specified SCSI device */
		tgt = ccb->ccb_h.target_id; /* XXX: Which Bus? */
		s = splcam();
		error = isp_control(isp, ISPCTL_RESET_DEV, &tgt);
		(void) splx(s);
		if (error) {
			ccb->ccb_h.status = CAM_REQ_CMP_ERR;
		} else {
			ccb->ccb_h.status = CAM_REQ_CMP;
		}
		xpt_done(ccb);
		break;
	case XPT_ABORT:			/* Abort the specified CCB */
		s = splcam();
		error = isp_control(isp, ISPCTL_ABORT_CMD, ccb);
		(void) splx(s);
		if (error) {
			ccb->ccb_h.status = CAM_REQ_CMP_ERR;
		} else {
			ccb->ccb_h.status = CAM_REQ_CMP;
		}
		xpt_done(ccb);
		break;

	case XPT_SET_TRAN_SETTINGS:	/* Nexus Settings */

		cts = &ccb->cts;
		tgt = cts->ccb_h.target_id;
		s = splcam();
		if (isp->isp_type & ISP_HA_FC) {
			;	/* nothing to change */
		} else {
			sdparam *sdp = isp->isp_param;
			u_int16_t *dptr;
			int bus = cam_sim_bus(xpt_path_sim(cts->ccb_h.path));

			sdp += bus;
#if	0
			if (cts->flags & CCB_TRANS_CURRENT_SETTINGS)
				dptr = &sdp->isp_devparam[tgt].cur_dflags;
			else
				dptr = &sdp->isp_devparam[tgt].dev_flags;
#else
			/*
			 * We always update (internally) from dev_flags
			 * so any request to change settings just gets
			 * vectored to that location.
			 */
			dptr = &sdp->isp_devparam[tgt].dev_flags;
#endif

			/*
			 * Note that these operations affect the
			 * the goal flags (dev_flags)- not
			 * the current state flags. Then we mark
			 * things so that the next operation to
			 * this HBA will cause the update to occur.
			 */
			if (cts->valid & CCB_TRANS_DISC_VALID) {
				if ((cts->flags & CCB_TRANS_DISC_ENB) != 0) {
					*dptr |= DPARM_DISC;
				} else {
					*dptr &= ~DPARM_DISC;
				}
			}
			if (cts->valid & CCB_TRANS_TQ_VALID) {
				if ((cts->flags & CCB_TRANS_TAG_ENB) != 0) {
					*dptr |= DPARM_TQING;
				} else {
					*dptr &= ~DPARM_TQING;
				}
			}
			if (cts->valid & CCB_TRANS_BUS_WIDTH_VALID) {
				switch (cts->bus_width) {
				case MSG_EXT_WDTR_BUS_16_BIT:
					*dptr |= DPARM_WIDE;
					break;
				default:
					*dptr &= ~DPARM_WIDE;
				}
			}
			/*
			 * Any SYNC RATE of nonzero and SYNC_OFFSET
			 * of nonzero will cause us to go to the
			 * selected (from NVRAM) maximum value for
			 * this device. At a later point, we'll
			 * allow finer control.
			 */
			if ((cts->valid & CCB_TRANS_SYNC_RATE_VALID) &&
			    (cts->valid & CCB_TRANS_SYNC_OFFSET_VALID) &&
			    (cts->sync_offset > 0)) {
				*dptr |= DPARM_SYNC;
			} else {
				*dptr &= ~DPARM_SYNC;
			}
			if (bootverbose || isp->isp_dblev >= 3)
				printf("%s: %d.%d set %s period 0x%x offset "
				    "0x%x flags 0x%x\n", isp->isp_name, bus,
				    tgt,
				    (cts->flags & CCB_TRANS_CURRENT_SETTINGS)?
				    "current" : "user", 
				    sdp->isp_devparam[tgt].sync_period,
				    sdp->isp_devparam[tgt].sync_offset,
				    sdp->isp_devparam[tgt].dev_flags);
			s = splcam();
			sdp->isp_devparam[tgt].dev_update = 1;
			isp->isp_update |= (1 << bus);
			(void) isp_control(isp, ISPCTL_UPDATE_PARAMS, NULL);
			(void) splx(s);
		}
		(void) splx(s);
		ccb->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;

	case XPT_GET_TRAN_SETTINGS:

		cts = &ccb->cts;
		tgt = cts->ccb_h.target_id;
		if (isp->isp_type & ISP_HA_FC) {
			/*
			 * a lot of normal SCSI things don't make sense.
			 */
			cts->flags = CCB_TRANS_TAG_ENB | CCB_TRANS_DISC_ENB;
			cts->valid = CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
			/*
			 * How do you measure the width of a high
			 * speed serial bus? Well, in bytes.
			 *
			 * Offset and period make no sense, though, so we set
			 * (above) a 'base' transfer speed to be gigabit.
			 */
			cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
		} else {
			sdparam *sdp = isp->isp_param;
			u_int16_t dval, pval, oval;
			int bus = cam_sim_bus(xpt_path_sim(cts->ccb_h.path));

			sdp += bus;
			if (cts->flags & CCB_TRANS_CURRENT_SETTINGS) {
				s = splcam();
				/*
				 * First do a refresh to see if things
				 * have changed recently!
				 */
				sdp->isp_devparam[tgt].dev_refresh = 1;
				isp->isp_update |= (1 << bus);
				(void) isp_control(isp, ISPCTL_UPDATE_PARAMS,
				    NULL);
				(void) splx(s);
				dval = sdp->isp_devparam[tgt].cur_dflags;
				oval = sdp->isp_devparam[tgt].cur_offset;
				pval = sdp->isp_devparam[tgt].cur_period;
			} else {
				dval = sdp->isp_devparam[tgt].dev_flags;
				oval = sdp->isp_devparam[tgt].sync_offset;
				pval = sdp->isp_devparam[tgt].sync_period;
			}

			s = splcam();
			cts->flags &= ~(CCB_TRANS_DISC_ENB|CCB_TRANS_TAG_ENB);

			if (dval & DPARM_DISC) {
				cts->flags |= CCB_TRANS_DISC_ENB;
			}
			if (dval & DPARM_TQING) {
				cts->flags |= CCB_TRANS_TAG_ENB;
			}
			if (dval & DPARM_WIDE) {
				cts->bus_width = MSG_EXT_WDTR_BUS_16_BIT;
			} else {
				cts->bus_width = MSG_EXT_WDTR_BUS_8_BIT;
			}
			cts->valid = CCB_TRANS_BUS_WIDTH_VALID |
			    CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;

			if ((dval & DPARM_SYNC) && oval != 0) {
				cts->sync_period = pval;
				cts->sync_offset = oval;
				cts->valid |=
				    CCB_TRANS_SYNC_RATE_VALID |
				    CCB_TRANS_SYNC_OFFSET_VALID;
			}
			splx(s);
			if (bootverbose || isp->isp_dblev >= 3)
				printf("%s: %d.%d get %s period 0x%x offset "
				    "0x%x flags 0x%x\n", isp->isp_name, bus,
				    tgt,
			    	    (cts->flags & CCB_TRANS_CURRENT_SETTINGS)?
				    "current" : "user", pval, oval, dval);
		}
		ccb->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;

	case XPT_CALC_GEOMETRY:
	{
		struct ccb_calc_geometry *ccg;
		u_int32_t secs_per_cylinder;
		u_int32_t size_mb;

		ccg = &ccb->ccg;
		if (ccg->block_size == 0) {
			printf("%s: %d.%d XPT_CALC_GEOMETRY block size 0?\n",
				isp->isp_name, ccg->ccb_h.target_id,
				ccg->ccb_h.target_lun);
			ccb->ccb_h.status = CAM_REQ_INVALID;
			xpt_done(ccb);
			break;
		}
		size_mb = ccg->volume_size /((1024L * 1024L) / ccg->block_size);
		if (size_mb > 1024) {
			ccg->heads = 255;
			ccg->secs_per_track = 63;
		} else {
			ccg->heads = 64;
			ccg->secs_per_track = 32;
		}
		secs_per_cylinder = ccg->heads * ccg->secs_per_track;
		ccg->cylinders = ccg->volume_size / secs_per_cylinder;
		ccb->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;
	}
	case XPT_RESET_BUS:		/* Reset the specified bus */
		tgt = cam_sim_bus(sim);
		s = splcam();
		error = isp_control(isp, ISPCTL_RESET_BUS, &tgt);
		(void) splx(s);
		if (error)
			ccb->ccb_h.status = CAM_REQ_CMP_ERR;
		else {
			if (cam_sim_bus(sim) && isp->isp_path2 != NULL)
				xpt_async(AC_BUS_RESET, isp->isp_path2, NULL);
			else if (isp->isp_path != NULL)
				xpt_async(AC_BUS_RESET, isp->isp_path, NULL);
			ccb->ccb_h.status = CAM_REQ_CMP;
		}
		xpt_done(ccb);
		break;

	case XPT_TERM_IO:		/* Terminate the I/O process */
		/* Does this need to be implemented? */
		ccb->ccb_h.status = CAM_REQ_INVALID;
		xpt_done(ccb);
		break;

	case XPT_PATH_INQ:		/* Path routing inquiry */
	{
		struct ccb_pathinq *cpi = &ccb->cpi;

		cpi->version_num = 1;
		cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
		cpi->target_sprt = 0;
		cpi->hba_eng_cnt = 0;
		if (IS_FC(isp)) {
			cpi->hba_misc = PIM_NOBUSRESET;
			cpi->max_target = MAX_FC_TARG-1;
			cpi->initiator_id =
			    ((fcparam *)isp->isp_param)->isp_loopid;
#ifdef	SCCLUN
			cpi->max_lun = (1 << 16) - 1;
#else
			cpi->max_lun = (1 << 4) - 1;
#endif
			/*
			 * Set base transfer capabilities for Fibre Channel.
			 * Technically not correct because we don't know
			 * what media we're running on top of- but we'll
			 * look good if we always say 100MB/s.
			 */
			cpi->base_transfer_speed = 100000;
		} else {
			sdparam *sdp = isp->isp_param;
			sdp += cam_sim_bus(xpt_path_sim(cpi->ccb_h.path));
			cpi->hba_misc = 0;
			cpi->initiator_id = sdp->isp_initiator_id;
			cpi->max_target =  MAX_TARGETS-1;
			if (ISP_FW_REVX(isp->isp_fwrev) >=
			    ISP_FW_REV(7, 55, 0)) {
#if	0
				/*
				 * Too much breakage.
				 */
				cpi->max_lun = (1 << 5) - 1;
#else
				cpi->max_lun = (1 << 3) - 1;
#endif
			} else {
				cpi->max_lun = (1 << 3) - 1;
			}
			cpi->base_transfer_speed = 3300;
		}

		cpi->bus_id = cam_sim_bus(sim);
		strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
		strncpy(cpi->hba_vid, "Qlogic", HBA_IDLEN);
		strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
		cpi->unit_number = cam_sim_unit(sim);
		cpi->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;
	}
	default:
		ccb->ccb_h.status = CAM_REQ_INVALID;
		xpt_done(ccb);
		break;
	}
}

#define	ISPDDB	(CAM_DEBUG_INFO|CAM_DEBUG_TRACE|CAM_DEBUG_CDB)
void
isp_done(struct ccb_scsiio *sccb)
{
	struct ispsoftc *isp = XS_ISP(sccb);

	if (XS_NOERR(sccb))
		XS_SETERR(sccb, CAM_REQ_CMP);
	sccb->ccb_h.status &= ~CAM_STATUS_MASK;
	sccb->ccb_h.status |= sccb->ccb_h.spriv_field0;
	if ((sccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP &&
	    (sccb->scsi_status != SCSI_STATUS_OK)) {
		sccb->ccb_h.status &= ~CAM_STATUS_MASK;
		sccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
	}
	if ((sccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
		if ((sccb->ccb_h.status & CAM_DEV_QFRZN) == 0) {
			IDPRINTF(3, ("%s: freeze devq %d.%d ccbstat 0x%x\n",
			    isp->isp_name, sccb->ccb_h.target_id,
			    sccb->ccb_h.target_lun, sccb->ccb_h.status));
			xpt_freeze_devq(sccb->ccb_h.path, 1);
			sccb->ccb_h.status |= CAM_DEV_QFRZN;
		}
	}
	if (isp->isp_osinfo.simqfrozen & SIMQFRZ_RESOURCE) {
		isp->isp_osinfo.simqfrozen &= ~SIMQFRZ_RESOURCE;
		sccb->ccb_h.status |= CAM_RELEASE_SIMQ;
		xpt_release_simq(isp->isp_sim, 1);
	}
	sccb->ccb_h.status &= ~CAM_SIM_QUEUED;
	if (CAM_DEBUGGED(sccb->ccb_h.path, ISPDDB) &&
	    (sccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
		xpt_print_path(sccb->ccb_h.path);
		printf("cam completion status 0x%x\n", sccb->ccb_h.status);
	}
	xpt_done((union ccb *) sccb);
}

int
isp_async(isp, cmd, arg)
	struct ispsoftc *isp;
	ispasync_t cmd;
	void *arg;
{
	int bus, rv = 0;
	switch (cmd) {
	case ISPASYNC_NEW_TGT_PARAMS:
		if (isp->isp_type & ISP_HA_SCSI) {
			int flags, tgt;
			sdparam *sdp = isp->isp_param;
			struct ccb_trans_settings neg;
			struct cam_path *tmppath;

			tgt = *((int *)arg);
			bus = (tgt >> 16) & 0xffff;
			tgt &= 0xffff;
			sdp += bus;
			if (xpt_create_path(&tmppath, NULL,
			    cam_sim_path(bus? isp->isp_sim2 : isp->isp_sim),
			    tgt, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
				xpt_print_path(isp->isp_path);
				printf("isp_async cannot make temp path for "
				    "target %d bus %d\n", tgt, bus);
				rv = -1;
				break;
			}
			flags = sdp->isp_devparam[tgt].cur_dflags;
			neg.valid = CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
			if (flags & DPARM_DISC) {
				neg.flags |= CCB_TRANS_DISC_ENB;
			}
			if (flags & DPARM_TQING) {
				neg.flags |= CCB_TRANS_TAG_ENB;
			}
			neg.valid |= CCB_TRANS_BUS_WIDTH_VALID;
			neg.bus_width = (flags & DPARM_WIDE)?
			    MSG_EXT_WDTR_BUS_8_BIT : MSG_EXT_WDTR_BUS_16_BIT;
			neg.sync_period = sdp->isp_devparam[tgt].cur_period;
			neg.sync_offset = sdp->isp_devparam[tgt].cur_offset;
			if (flags & DPARM_SYNC) {
				neg.valid |=
				    CCB_TRANS_SYNC_RATE_VALID |
				    CCB_TRANS_SYNC_OFFSET_VALID;
			}
			IDPRINTF(3, ("%s: NEW_TGT_PARAMS bus %d tgt %d period "
			    "0x%x offset 0x%x flags 0x%x\n", isp->isp_name,
			    bus, tgt, neg.sync_period, neg.sync_offset, flags));
			xpt_setup_ccb(&neg.ccb_h, tmppath, 1);
			xpt_async(AC_TRANSFER_NEG, tmppath, &neg);
			xpt_free_path(tmppath);
		}
		break;
	case ISPASYNC_BUS_RESET:
		bus = *((int *)arg);
		printf("%s: SCSI bus reset on bus %d detected\n",
		    isp->isp_name, bus);
		if (bus > 0 && isp->isp_path2) {
			xpt_async(AC_BUS_RESET, isp->isp_path2, NULL);
		} else if (isp->isp_path) {
			xpt_async(AC_BUS_RESET, isp->isp_path, NULL);
		}
		break;
	case ISPASYNC_LOOP_DOWN:
		if (isp->isp_path) {
			/*
			 * We can get multiple LOOP downs, so only count one.
			 */
			if (!(isp->isp_osinfo.simqfrozen & SIMQFRZ_LOOPDOWN)) {
				xpt_freeze_simq(isp->isp_sim, 1);
				isp->isp_osinfo.simqfrozen |= SIMQFRZ_LOOPDOWN;
				printf("%s: Loop DOWN- freezing SIMQ until Loop"
				    " comes up\n", isp->isp_name);
			}
		} else {
			printf("%s: Loop DOWN\n", isp->isp_name);
		}
		break;
	case ISPASYNC_LOOP_UP:
		if (isp->isp_path) {
			if (isp->isp_osinfo.simqfrozen & SIMQFRZ_LOOPDOWN) {
				xpt_release_simq(isp->isp_sim, 1);
				isp->isp_osinfo.simqfrozen &= ~SIMQFRZ_LOOPDOWN;
				if (isp->isp_osinfo.simqfrozen) {
					printf("%s: Loop UP- SIMQ still "
					    "frozen\n", isp->isp_name);
				} else {
					printf("%s: Loop UP-releasing frozen "
					    "SIMQ\n", isp->isp_name);
				}
			}
		} else {
			printf("%s: Loop UP\n", isp->isp_name);
		}
		break;
	case ISPASYNC_PDB_CHANGE_COMPLETE:
	if (IS_FC(isp)) {
		long i = (long) arg;
		static char *roles[4] = {
		    "No", "Target", "Initiator", "Target/Initiator"
		};
		isp_pdb_t *pdbp = &((fcparam *)isp->isp_param)->isp_pdb[i];
		if (pdbp->pdb_options == INVALID_PDB_OPTIONS) {
			break;
		}
		printf("%s: Loop ID %d, %s role\n", isp->isp_name,
		    pdbp->pdb_loopid, roles[(pdbp->pdb_prli_svc3 >> 4) & 0x3]);
		printf("     Node Address 0x%x WWN 0x"
		    "%02x%02x%02x%02x%02x%02x%02x%02x\n",
		    BITS2WORD(pdbp->pdb_portid_bits),
		    pdbp->pdb_portname[0], pdbp->pdb_portname[1],
		    pdbp->pdb_portname[2], pdbp->pdb_portname[3],
		    pdbp->pdb_portname[4], pdbp->pdb_portname[5],
		    pdbp->pdb_portname[6], pdbp->pdb_portname[7]);
		if (pdbp->pdb_options & PDB_OPTIONS_ADISC)
			printf("     Hard Address 0x%x WWN 0x"
			    "%02x%02x%02x%02x%02x%02x%02x%02x\n",
			    BITS2WORD(pdbp->pdb_hardaddr_bits),
			    pdbp->pdb_nodename[0], pdbp->pdb_nodename[1],
			    pdbp->pdb_nodename[2], pdbp->pdb_nodename[3],
			    pdbp->pdb_nodename[4], pdbp->pdb_nodename[5],
			    pdbp->pdb_nodename[6], pdbp->pdb_nodename[7]);
		switch (pdbp->pdb_prli_svc3 & SVC3_ROLE_MASK) {
		case SVC3_TGT_ROLE|SVC3_INI_ROLE:
			printf("     Master State=%s, Slave State=%s\n",
			    isp2100_pdb_statename(pdbp->pdb_mstate),
			    isp2100_pdb_statename(pdbp->pdb_sstate));
			break;
		case SVC3_TGT_ROLE:
			printf("     Master State=%s\n",
			    isp2100_pdb_statename(pdbp->pdb_mstate));
			break;
		case SVC3_INI_ROLE:
			printf("     Slave State=%s\n",
			    isp2100_pdb_statename(pdbp->pdb_sstate));
			break;
		default:
			break;
		}
		break;
	}
	case ISPASYNC_CHANGE_NOTIFY:
		printf("%s: Name Server Database Changed\n", isp->isp_name);
		break;
	default:
		break;
	}
	return (rv);
}


/*
 * Locks are held before coming here.
 */
void
isp_uninit(struct ispsoftc *isp)
{
	ISP_WRITE(isp, HCCR, HCCR_CMD_RESET);
	DISABLE_INTS(isp);
}
#else

#define WATCH_INTERVAL          30

static void ispminphys __P((struct buf *));
static u_int32_t isp_adapter_info __P((int));
static int ispcmd __P((ISP_SCSI_XFER_T *));
static void isp_watch __P((void *arg));

static struct scsi_adapter isp_switch = {
	ispcmd, ispminphys, 0, 0, isp_adapter_info, "isp", { 0, 0 }
};
static struct scsi_device isp_dev = {
	NULL, NULL, NULL, NULL, "isp", 0, { 0, 0 }
};
static int isp_poll __P((struct ispsoftc *, ISP_SCSI_XFER_T *, int));


/*
 * Complete attachment of hardware, include subdevices.
 */
void
isp_attach(struct ispsoftc *isp)
{
	struct scsibus_data *scbus;

	scbus = scsi_alloc_bus(); 
	if(!scbus) {
		return;
	}
	if (isp->isp_state == ISP_INITSTATE)
		isp->isp_state = ISP_RUNSTATE;

        timeout(isp_watch, isp, WATCH_INTERVAL * hz);
	isp->isp_dogactive = 1;

	isp->isp_osinfo._link.adapter_unit = isp->isp_osinfo.unit;
	isp->isp_osinfo._link.adapter_softc = isp;
	isp->isp_osinfo._link.adapter = &isp_switch;
	isp->isp_osinfo._link.device = &isp_dev;
	isp->isp_osinfo._link.flags = 0;
	if (isp->isp_type & ISP_HA_FC) {
		isp->isp_osinfo._link.adapter_targ =
			((fcparam *)isp->isp_param)->isp_loopid;
		scbus->maxtarg = MAX_FC_TARG-1;
	} else {
		int tmp = 0;	/* XXXX: Which Bus? */
		isp->isp_osinfo.delay_throttle_count = 1;
		isp->isp_osinfo._link.adapter_targ =
			((sdparam *)isp->isp_param)->isp_initiator_id;
		scbus->maxtarg = MAX_TARGETS-1;
		(void) isp_control(isp, ISPCTL_RESET_BUS, &tmp);
	}

	/*
	 * Prepare the scsibus_data area for the upperlevel scsi code.
	 */ 
	scbus->adapter_link = &isp->isp_osinfo._link;

	/*
	 * ask the adapter what subunits are present
	 */
	scsi_attachdevs(scbus);
}


/*
 * minphys our xfers
 *
 * Unfortunately, the buffer pointer describes the target device- not the
 * adapter device, so we can't use the pointer to find out what kind of
 * adapter we are and adjust accordingly.
 */

static void
ispminphys(struct buf *bp)
{
	/*
	 * Only the 10X0 has a 24 bit limit.
	 */
	if (bp->b_bcount >= (1 << 24)) {
		bp->b_bcount = (1 << 24);
	}
}

static u_int32_t
isp_adapter_info(int unit)
{
	/*
 	 * XXX: FIND ISP BASED UPON UNIT AND GET REAL QUEUE LIMIT FROM THAT
	 */
	return (2);
}

static int
ispcmd(ISP_SCSI_XFER_T *xs)
{
	struct ispsoftc *isp;
	int r, s;

	isp = XS_ISP(xs);
	s = splbio();
	DISABLE_INTS(isp);
	if (isp->isp_state != ISP_RUNSTATE) {
		isp_init(isp);
		if (isp->isp_state != ISP_INITSTATE) {
			ENABLE_INTS(isp);
			(void) splx(s);
			XS_SETERR(xs, HBA_BOTCH);
			return (CMD_COMPLETE);
		}
		isp->isp_state = ISP_RUNSTATE;
	}
	r = ispscsicmd(xs);
	ENABLE_INTS(isp);
	if (r != CMD_QUEUED || (xs->flags & SCSI_NOMASK) == 0) {
		(void) splx(s);
		return (r);
	}

	/*
	 * If we can't use interrupts, poll on completion.
	 */
	if (isp_poll(isp, xs, XS_TIME(xs))) {
		/*
		 * If no other error occurred but we didn't finish,
		 * something bad happened.
		 */
		if (XS_IS_CMD_DONE(xs) == 0) {
			isp->isp_nactive--;
			if (isp->isp_nactive < 0)
				isp->isp_nactive = 0;
			if (XS_NOERR(xs)) {
				isp_lostcmd(isp, xs);
				XS_SETERR(xs, HBA_BOTCH);
			}
		}
	}
	(void) splx(s);
	return (CMD_COMPLETE);
}

static int
isp_poll(struct ispsoftc *isp, ISP_SCSI_XFER_T *xs, int mswait)
{

	while (mswait) {
		/* Try the interrupt handling routine */
		(void)isp_intr((void *)isp);

		/* See if the xs is now done */
		if (XS_IS_CMD_DONE(xs))
			return (0);
		SYS_DELAY(1000);	/* wait one millisecond */
		mswait--;
	}
	return (1);
}

static void
isp_watch(void *arg)
{
	int i;
	struct ispsoftc *isp = arg;
	ISP_SCSI_XFER_T *xs;
	int s;

	/*
	 * Look for completely dead commands (but not polled ones).
	 */
	s = splbio();
	for (i = 0; i < RQUEST_QUEUE_LEN; i++) {
		if ((xs = (ISP_SCSI_XFER_T *) isp->isp_xflist[i]) == NULL) {
			continue;
		}
		if (XS_TIME(xs) == 0) {
			continue;
		}
		XS_TIME(xs) -= (WATCH_INTERVAL * 1000);

		/*
		 * Avoid later thinking that this
		 * transaction is not being timed.
		 * Then give ourselves to watchdog
		 * periods of grace.
		 */
		if (XS_TIME(xs) == 0)
			XS_TIME(xs) = 1;
		else if (XS_TIME(xs) > -(2 * WATCH_INTERVAL * 1000)) {
			continue;
		}
		if (IS_SCSI(isp)) {
			isp->isp_osinfo.delay_throttle_count = 1;
		}
		if (isp_control(isp, ISPCTL_ABORT_CMD, xs)) {
			printf("%s: isp_watch failed to abort command\n",
			    isp->isp_name);
			isp_restart(isp);
			break;
		}
	}
	if (isp->isp_osinfo.delay_throttle_count) {
		if (--isp->isp_osinfo.delay_throttle_count == 0) {
			sdparam *sdp = isp->isp_param;
			for (i = 0; i < MAX_TARGETS; i++) {
				sdp->isp_devparam[i].dev_flags |=
					DPARM_WIDE|DPARM_SYNC|DPARM_TQING;
				sdp->isp_devparam[i].dev_update = 1;
			}
			isp->isp_update = 1;
		}
	}
        timeout(isp_watch, isp, WATCH_INTERVAL * hz);
	isp->isp_dogactive = 1;
	splx(s);
}

int
isp_async(isp, cmd, arg)
	struct ispsoftc *isp;
	ispasync_t cmd;
	void *arg;
{
	switch (cmd) {
	case ISPASYNC_NEW_TGT_PARAMS:
		if (isp->isp_type & ISP_HA_SCSI) {
			sdparam *sdp = isp->isp_param;
			char *wt;
			int mhz, flags, tgt, period;

			tgt = *((int *) arg);

			flags = sdp->isp_devparam[tgt].cur_dflags;
			period = sdp->isp_devparam[tgt].cur_period;
			if ((flags & DPARM_SYNC) && period &&
			    (sdp->isp_devparam[tgt].cur_offset) != 0) {
				if (sdp->isp_lvdmode) {
					switch (period) {
					case 0xa:
						mhz = 40;
						break;
					case 0xb:
						mhz = 33;
						break;
					case 0xc:
						mhz = 25;
						break;
					default:
						mhz = 1000 / (period * 4);
						break;
					}
				} else {
					mhz = 1000 / (period * 4);
				}
			} else {
				mhz = 0;
			}
			switch (flags & (DPARM_WIDE|DPARM_TQING)) {
			case DPARM_WIDE:
				wt = ", 16 bit wide\n";
				break;
			case DPARM_TQING:
				wt = ", Tagged Queueing Enabled\n";
				break;
			case DPARM_WIDE|DPARM_TQING:
				wt = ", 16 bit wide, Tagged Queueing Enabled\n";
				break;
			default:
				wt = "\n";
				break;
			}
			if (mhz) {
				printf("%s: Target %d at %dMHz Max Offset %d%s",
				    isp->isp_name, tgt, mhz,
				    sdp->isp_devparam[tgt].cur_offset, wt);
			} else {
				printf("%s: Target %d Async Mode%s",
				    isp->isp_name, tgt, wt);
			}
		}
		break;
	case ISPASYNC_BUS_RESET:
		printf("%s: SCSI bus reset detected\n", isp->isp_name);
		break;
	case ISPASYNC_LOOP_DOWN:
		printf("%s: Loop DOWN\n", isp->isp_name);
		break;
	case ISPASYNC_LOOP_UP:
		printf("%s: Loop UP\n", isp->isp_name);
		break;
	case ISPASYNC_PDB_CHANGE_COMPLETE:
	if (isp->isp_type & ISP_HA_FC) {
		int i;
		static char *roles[4] = {
		    "No", "Target", "Initiator", "Target/Initiator"
		};
		for (i = 0; i < MAX_FC_TARG; i++)  {
			isp_pdb_t *pdbp =
			    &((fcparam *)isp->isp_param)->isp_pdb[i];
			if (pdbp->pdb_options == INVALID_PDB_OPTIONS)
				continue;
			printf("%s: Loop ID %d, %s role\n",
			    isp->isp_name, pdbp->pdb_loopid,
			    roles[(pdbp->pdb_prli_svc3 >> 4) & 0x3]);
			printf("     Node Address 0x%x WWN 0x"
			    "%02x%02x%02x%02x%02x%02x%02x%02x\n",
			    BITS2WORD(pdbp->pdb_portid_bits),
			    pdbp->pdb_portname[0], pdbp->pdb_portname[1],
			    pdbp->pdb_portname[2], pdbp->pdb_portname[3],
			    pdbp->pdb_portname[4], pdbp->pdb_portname[5],
			    pdbp->pdb_portname[6], pdbp->pdb_portname[7]);
			if (pdbp->pdb_options & PDB_OPTIONS_ADISC)
				printf("     Hard Address 0x%x WWN 0x"
				    "%02x%02x%02x%02x%02x%02x%02x%02x\n",
				    BITS2WORD(pdbp->pdb_hardaddr_bits),
				    pdbp->pdb_nodename[0],
				    pdbp->pdb_nodename[1],
				    pdbp->pdb_nodename[2],
				    pdbp->pdb_nodename[3],
				    pdbp->pdb_nodename[4],
				    pdbp->pdb_nodename[5],
				    pdbp->pdb_nodename[6],
				    pdbp->pdb_nodename[7]);
			switch (pdbp->pdb_prli_svc3 & SVC3_ROLE_MASK) {
			case SVC3_TGT_ROLE|SVC3_INI_ROLE:
				printf("     Master State=%s, Slave State=%s\n",
				    isp2100_pdb_statename(pdbp->pdb_mstate),
				    isp2100_pdb_statename(pdbp->pdb_sstate));
				break;
			case SVC3_TGT_ROLE:
				printf("     Master State=%s\n",
				    isp2100_pdb_statename(pdbp->pdb_mstate));
				break;
			case SVC3_INI_ROLE:
				printf("     Slave State=%s\n",
				    isp2100_pdb_statename(pdbp->pdb_sstate));
				break;
			default:
				break;
			}
		}
		break;
	}
	case ISPASYNC_CHANGE_NOTIFY:
		printf("%s: Name Server Database Changed\n", isp->isp_name);
		break;
	default:
		break;
	}
	return (0);
}

/*
 * Free any associated resources prior to decommissioning and
 * set the card to a known state (so it doesn't wake up and kick
 * us when we aren't expecting it to).
 *
 * Locks are held before coming here.
 */
void
isp_uninit(isp)
	struct ispsoftc *isp;
{
	int s = splbio();
	/*
	 * Leave with interrupts disabled.
	 */
	ISP_WRITE(isp, HCCR, HCCR_CMD_RESET);
	DISABLE_INTS(isp);

	/*
	 * Turn off the watchdog (if active).
	 */
	if (isp->isp_dogactive) {
		untimeout(isp_watch, isp);
		isp->isp_dogactive = 0;
	}
	/*
	 * And out...
	 */
	splx(s);
}
#endif