xref: /freebsd/sys/dev/isp/isp_freebsd.c (revision 10ed63fc)

/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2009-2020 Alexander Motin <mav@FreeBSD.org>
 * Copyright (c) 1997-2009 by Matthew Jacob
 * 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. 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.
 */

/*
 * Platform (FreeBSD) dependent common attachment code for Qlogic adapters.
 */
#include <sys/cdefs.h>
#include <dev/isp/isp_freebsd.h>
#include <sys/unistd.h>
#include <sys/kthread.h>
#include <sys/conf.h>
#include <sys/module.h>
#include <sys/ioccom.h>
#include <dev/isp/isp_ioctl.h>
#include <sys/devicestat.h>
#include <cam/cam_periph.h>
#include <cam/cam_xpt_periph.h>

MODULE_VERSION(isp, 1);
MODULE_DEPEND(isp, cam, 1, 1, 1);
int isp_announced = 0;
int isp_loop_down_limit = 60;	/* default loop down limit */
int isp_quickboot_time = 7;	/* don't wait more than N secs for loop up */
int isp_gone_device_time = 30;	/* grace time before reporting device lost */
static const char prom3[] = "Chan %d [%u] PortID 0x%06x Departed because of %s";

static void isp_freeze_loopdown(ispsoftc_t *, int);
static void isp_loop_changed(ispsoftc_t *isp, int chan);
static void isp_rq_check_above(ispsoftc_t *);
static void isp_rq_check_below(ispsoftc_t *);
static d_ioctl_t ispioctl;
static void isp_poll(struct cam_sim *);
static callout_func_t isp_watchdog;
static callout_func_t isp_gdt;
static task_fn_t isp_gdt_task;
static void isp_kthread(void *);
static void isp_action(struct cam_sim *, union ccb *);
static int isp_timer_count;
static void isp_timer(void *);

static struct cdevsw isp_cdevsw = {
	.d_version =	D_VERSION,
	.d_ioctl =	ispioctl,
	.d_name =	"isp",
};

static int
isp_role_sysctl(SYSCTL_HANDLER_ARGS)
{
	ispsoftc_t *isp = (ispsoftc_t *)arg1;
	int chan = arg2;
	int error, old, value;

	value = FCPARAM(isp, chan)->role;

	error = sysctl_handle_int(oidp, &value, 0, req);
	if ((error != 0) || (req->newptr == NULL))
		return (error);

	if (value < ISP_ROLE_NONE || value > ISP_ROLE_BOTH)
		return (EINVAL);

	ISP_LOCK(isp);
	old = FCPARAM(isp, chan)->role;

	/* We don't allow target mode switch from here. */
	value = (old & ISP_ROLE_TARGET) | (value & ISP_ROLE_INITIATOR);

	/* If nothing has changed -- we are done. */
	if (value == old) {
		ISP_UNLOCK(isp);
		return (0);
	}

	/* Actually change the role. */
	error = isp_control(isp, ISPCTL_CHANGE_ROLE, chan, value);
	ISP_UNLOCK(isp);
	return (error);
}

static int
isp_attach_chan(ispsoftc_t *isp, struct cam_devq *devq, int chan)
{
	fcparam *fcp = FCPARAM(isp, chan);
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	struct sysctl_ctx_list *ctx = device_get_sysctl_ctx(isp->isp_osinfo.dev);
	struct sysctl_oid *tree = device_get_sysctl_tree(isp->isp_osinfo.dev);
	char name[16];
	struct cam_sim *sim;
	struct cam_path *path;
#ifdef	ISP_TARGET_MODE
	int i;
#endif

	sim = cam_sim_alloc(isp_action, isp_poll, "isp", isp,
	    device_get_unit(isp->isp_dev), &isp->isp_lock,
	    isp->isp_maxcmds, isp->isp_maxcmds, devq);
	if (sim == NULL)
		return (ENOMEM);

	if (xpt_bus_register(sim, isp->isp_dev, chan) != CAM_SUCCESS) {
		cam_sim_free(sim, FALSE);
		return (EIO);
	}
	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, FALSE);
		return (ENXIO);
	}

	ISP_LOCK(isp);
	fc->sim = sim;
	fc->path = path;
	fc->isp = isp;
	fc->ready = 1;
	fcp->isp_use_gft_id = 1;
	fcp->isp_use_gff_id = 1;

	callout_init_mtx(&fc->gdt, &isp->isp_lock, 0);
	TASK_INIT(&fc->gtask, 1, isp_gdt_task, fc);
#ifdef	ISP_TARGET_MODE
	TAILQ_INIT(&fc->waitq);
	STAILQ_INIT(&fc->ntfree);
	for (i = 0; i < ATPDPSIZE; i++)
		STAILQ_INSERT_TAIL(&fc->ntfree, &fc->ntpool[i], next);
	LIST_INIT(&fc->atfree);
	for (i = ATPDPSIZE-1; i >= 0; i--)
		LIST_INSERT_HEAD(&fc->atfree, &fc->atpool[i], next);
	for (i = 0; i < ATPDPHASHSIZE; i++)
		LIST_INIT(&fc->atused[i]);
#endif
	isp_loop_changed(isp, chan);
	ISP_UNLOCK(isp);
	if (kproc_create(isp_kthread, fc, &fc->kproc, 0, 0,
	    "%s_%d", device_get_nameunit(isp->isp_osinfo.dev), chan)) {
		xpt_free_path(fc->path);
		xpt_bus_deregister(cam_sim_path(fc->sim));
		cam_sim_free(fc->sim, FALSE);
		return (ENOMEM);
	}
	fc->num_threads += 1;
	if (chan > 0) {
		snprintf(name, sizeof(name), "chan%d", chan);
		tree = SYSCTL_ADD_NODE(ctx, SYSCTL_CHILDREN(tree),
		    OID_AUTO, name, CTLFLAG_RW | CTLFLAG_MPSAFE, 0,
		    "Virtual channel");
	}
	SYSCTL_ADD_QUAD(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "wwnn", CTLFLAG_RD, &fcp->isp_wwnn,
	    "World Wide Node Name");
	SYSCTL_ADD_QUAD(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "wwpn", CTLFLAG_RD, &fcp->isp_wwpn,
	    "World Wide Port Name");
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "loop_down_limit", CTLFLAG_RW, &fc->loop_down_limit, 0,
	    "Loop Down Limit");
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "gone_device_time", CTLFLAG_RW, &fc->gone_device_time, 0,
	    "Gone Device Time");
#if defined(ISP_TARGET_MODE) && defined(DEBUG)
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "inject_lost_data_frame", CTLFLAG_RW, &fc->inject_lost_data_frame, 0,
	    "Cause a Lost Frame on a Read");
#endif
	SYSCTL_ADD_PROC(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "role", CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_MPSAFE,
	    isp, chan, isp_role_sysctl, "I", "Current role");
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "speed", CTLFLAG_RD, &fcp->isp_gbspeed, 0,
	    "Connection speed in gigabits");
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "linkstate", CTLFLAG_RD, &fcp->isp_linkstate, 0,
	    "Link state");
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "fwstate", CTLFLAG_RD, &fcp->isp_fwstate, 0,
	    "Firmware state");
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "loopstate", CTLFLAG_RD, &fcp->isp_loopstate, 0,
	    "Loop state");
	SYSCTL_ADD_UINT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "topo", CTLFLAG_RD, &fcp->isp_topo, 0,
	    "Connection topology");
	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "use_gft_id", CTLFLAG_RWTUN, &fcp->isp_use_gft_id, 0,
	    "Use GFT_ID during fabric scan");
	SYSCTL_ADD_INT(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "use_gff_id", CTLFLAG_RWTUN, &fcp->isp_use_gff_id, 0,
	    "Use GFF_ID during fabric scan");
	SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "fw_version_flash", CTLFLAG_RD, fcp->fw_version_flash, 0,
	    "Firmware version in (active) flash region");
	SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "fw_version_ispfw", CTLFLAG_RD, fcp->fw_version_ispfw, 0,
	    "Firmware version loaded from ispfw(4)");
	SYSCTL_ADD_STRING(ctx, SYSCTL_CHILDREN(tree), OID_AUTO,
	    "fw_version_run", CTLFLAG_RD, fcp->fw_version_run, 0,
	    "Firmware version currently running");
	return (0);
}

static void
isp_detach_chan(ispsoftc_t *isp, int chan)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	xpt_free_path(fc->path);
	xpt_bus_deregister(cam_sim_path(fc->sim));
	cam_sim_free(fc->sim, FALSE);

	/* Wait for the channel's spawned threads to exit. */
	wakeup(fc);
	while (fc->num_threads != 0)
		mtx_sleep(&fc->num_threads, &isp->isp_lock, PRIBIO, "isp_reap", 0);
}

int
isp_attach(ispsoftc_t *isp)
{
	const char *nu = device_get_nameunit(isp->isp_osinfo.dev);
	int du = device_get_unit(isp->isp_dev);
	int chan;

	/*
	 * Create the device queue for our SIM(s).
	 */
	isp->isp_osinfo.devq = cam_simq_alloc(isp->isp_maxcmds);
	if (isp->isp_osinfo.devq == NULL) {
		return (EIO);
	}

	for (chan = 0; chan < isp->isp_nchan; chan++) {
		if (isp_attach_chan(isp, isp->isp_osinfo.devq, chan)) {
			goto unwind;
		}
	}

	callout_init_mtx(&isp->isp_osinfo.tmo, &isp->isp_lock, 0);
	isp_timer_count = hz >> 2;
	callout_reset(&isp->isp_osinfo.tmo, isp_timer_count, isp_timer, isp);

	isp->isp_osinfo.cdev = make_dev(&isp_cdevsw, du, UID_ROOT, GID_OPERATOR, 0600, "%s", nu);
	if (isp->isp_osinfo.cdev) {
		isp->isp_osinfo.cdev->si_drv1 = isp;
	}
	return (0);

unwind:
	ISP_LOCK(isp);
	isp->isp_osinfo.is_exiting = 1;
	while (--chan >= 0)
		isp_detach_chan(isp, chan);
	ISP_UNLOCK(isp);
	cam_simq_free(isp->isp_osinfo.devq);
	isp->isp_osinfo.devq = NULL;
	return (-1);
}

int
isp_detach(ispsoftc_t *isp)
{
	int chan;

	if (isp->isp_osinfo.cdev) {
		destroy_dev(isp->isp_osinfo.cdev);
		isp->isp_osinfo.cdev = NULL;
	}
	ISP_LOCK(isp);
	/* Tell spawned threads that we're exiting. */
	isp->isp_osinfo.is_exiting = 1;
	for (chan = isp->isp_nchan - 1; chan >= 0; chan -= 1)
		isp_detach_chan(isp, chan);
	ISP_UNLOCK(isp);
	callout_drain(&isp->isp_osinfo.tmo);
	cam_simq_free(isp->isp_osinfo.devq);
	return (0);
}

static void
isp_freeze_loopdown(ispsoftc_t *isp, int chan)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	if (fc->sim == NULL)
		return;
	if (fc->simqfrozen == 0) {
		isp_prt(isp, ISP_LOGDEBUG0,
		    "Chan %d Freeze simq (loopdown)", chan);
		fc->simqfrozen = SIMQFRZ_LOOPDOWN;
		xpt_hold_boot();
		xpt_freeze_simq(fc->sim, 1);
	} else {
		isp_prt(isp, ISP_LOGDEBUG0,
		    "Chan %d Mark simq frozen (loopdown)", chan);
		fc->simqfrozen |= SIMQFRZ_LOOPDOWN;
	}
}

static void
isp_unfreeze_loopdown(ispsoftc_t *isp, int chan)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	if (fc->sim == NULL)
		return;
	int wasfrozen = fc->simqfrozen & SIMQFRZ_LOOPDOWN;
	fc->simqfrozen &= ~SIMQFRZ_LOOPDOWN;
	if (wasfrozen && fc->simqfrozen == 0) {
		isp_prt(isp, ISP_LOGDEBUG0,
		    "Chan %d Release simq", chan);
		xpt_release_simq(fc->sim, 1);
		xpt_release_boot();
	}
}

/*
 * Functions to protect from request queue overflow by freezing SIM queue.
 * XXX: freezing only one arbitrary SIM, since they all share the queue.
 */
static void
isp_rq_check_above(ispsoftc_t *isp)
{
	struct isp_fc *fc = ISP_FC_PC(isp, 0);

	if (isp->isp_rqovf || fc->sim == NULL)
		return;
	if (!isp_rqentry_avail(isp, QENTRY_MAX)) {
		xpt_freeze_simq(fc->sim, 1);
		isp->isp_rqovf = 1;
	}
}

static void
isp_rq_check_below(ispsoftc_t *isp)
{
	struct isp_fc *fc = ISP_FC_PC(isp, 0);

	if (!isp->isp_rqovf || fc->sim == NULL)
		return;
	if (isp_rqentry_avail(isp, QENTRY_MAX)) {
		xpt_release_simq(fc->sim, 0);
		isp->isp_rqovf = 0;
	}
}

static int
ispioctl(struct cdev *dev, u_long c, caddr_t addr, int flags, struct thread *td)
{
	ispsoftc_t *isp;
	int nr, chan, retval = ENOTTY;

	isp = dev->si_drv1;

	switch (c) {
	case ISP_SDBLEV:
	{
		int olddblev = isp->isp_dblev;
		isp->isp_dblev = *(int *)addr;
		*(int *)addr = olddblev;
		retval = 0;
		break;
	}
	case ISP_GETROLE:
		chan = *(int *)addr;
		if (chan < 0 || chan >= isp->isp_nchan) {
			retval = -ENXIO;
			break;
		}
		*(int *)addr = FCPARAM(isp, chan)->role;
		retval = 0;
		break;
	case ISP_SETROLE:
		nr = *(int *)addr;
		chan = nr >> 8;
		if (chan < 0 || chan >= isp->isp_nchan) {
			retval = -ENXIO;
			break;
		}
		nr &= 0xff;
		if (nr & ~(ISP_ROLE_INITIATOR|ISP_ROLE_TARGET)) {
			retval = EINVAL;
			break;
		}
		ISP_LOCK(isp);
		*(int *)addr = FCPARAM(isp, chan)->role;
		retval = isp_control(isp, ISPCTL_CHANGE_ROLE, chan, nr);
		ISP_UNLOCK(isp);
		break;

	case ISP_RESETHBA:
		ISP_LOCK(isp);
		isp_reinit(isp, 0);
		ISP_UNLOCK(isp);
		retval = 0;
		break;

	case ISP_RESCAN:
		chan = *(intptr_t *)addr;
		if (chan < 0 || chan >= isp->isp_nchan) {
			retval = -ENXIO;
			break;
		}
		ISP_LOCK(isp);
		if (isp_fc_runstate(isp, chan, 5 * 1000000) != LOOP_READY) {
			retval = EIO;
		} else {
			retval = 0;
		}
		ISP_UNLOCK(isp);
		break;

	case ISP_FC_LIP:
		chan = *(intptr_t *)addr;
		if (chan < 0 || chan >= isp->isp_nchan) {
			retval = -ENXIO;
			break;
		}
		ISP_LOCK(isp);
		if (isp_control(isp, ISPCTL_SEND_LIP, chan)) {
			retval = EIO;
		} else {
			retval = 0;
		}
		ISP_UNLOCK(isp);
		break;
	case ISP_FC_GETDINFO:
	{
		struct isp_fc_device *ifc = (struct isp_fc_device *) addr;
		fcportdb_t *lp;

		if (ifc->loopid >= MAX_FC_TARG) {
			retval = EINVAL;
			break;
		}
		lp = &FCPARAM(isp, ifc->chan)->portdb[ifc->loopid];
		if (lp->state != FC_PORTDB_STATE_NIL) {
			ifc->role = (lp->prli_word3 & SVC3_ROLE_MASK) >> SVC3_ROLE_SHIFT;
			ifc->loopid = lp->handle;
			ifc->portid = lp->portid;
			ifc->node_wwn = lp->node_wwn;
			ifc->port_wwn = lp->port_wwn;
			retval = 0;
		} else {
			retval = ENODEV;
		}
		break;
	}
	case ISP_FC_GETHINFO:
	{
		struct isp_hba_device *hba = (struct isp_hba_device *) addr;
		int chan = hba->fc_channel;

		if (chan < 0 || chan >= isp->isp_nchan) {
			retval = ENXIO;
			break;
		}
		hba->fc_fw_major = ISP_FW_MAJORX(isp->isp_fwrev);
		hba->fc_fw_minor = ISP_FW_MINORX(isp->isp_fwrev);
		hba->fc_fw_micro = ISP_FW_MICROX(isp->isp_fwrev);
		hba->fc_nchannels = isp->isp_nchan;
		hba->fc_nports = MAX_FC_TARG;
		hba->fc_speed = FCPARAM(isp, hba->fc_channel)->isp_gbspeed;
		hba->fc_topology = FCPARAM(isp, chan)->isp_topo + 1;
		hba->fc_loopid = FCPARAM(isp, chan)->isp_loopid;
		hba->nvram_node_wwn = FCPARAM(isp, chan)->isp_wwnn_nvram;
		hba->nvram_port_wwn = FCPARAM(isp, chan)->isp_wwpn_nvram;
		hba->active_node_wwn = FCPARAM(isp, chan)->isp_wwnn;
		hba->active_port_wwn = FCPARAM(isp, chan)->isp_wwpn;
		retval = 0;
		break;
	}
	case ISP_TSK_MGMT:
	{
		int needmarker;
		struct isp_fc_tsk_mgmt *fct = (struct isp_fc_tsk_mgmt *) addr;
		uint16_t nphdl;
		isp24xx_tmf_t tmf;
		isp24xx_statusreq_t sp;
		fcparam *fcp;
		fcportdb_t *lp;
		int i;

		chan = fct->chan;
		if (chan < 0 || chan >= isp->isp_nchan) {
			retval = -ENXIO;
			break;
		}

		needmarker = retval = 0;
		nphdl = fct->loopid;
		ISP_LOCK(isp);
		fcp = FCPARAM(isp, chan);

		for (i = 0; i < MAX_FC_TARG; i++) {
			lp = &fcp->portdb[i];
			if (lp->handle == nphdl) {
				break;
			}
		}
		if (i == MAX_FC_TARG) {
			retval = ENXIO;
			ISP_UNLOCK(isp);
			break;
		}
		ISP_MEMZERO(&tmf, sizeof(tmf));
		tmf.tmf_header.rqs_entry_type = RQSTYPE_TSK_MGMT;
		tmf.tmf_header.rqs_entry_count = 1;
		tmf.tmf_nphdl = lp->handle;
		tmf.tmf_delay = 2;
		tmf.tmf_timeout = 4;
		tmf.tmf_tidlo = lp->portid;
		tmf.tmf_tidhi = lp->portid >> 16;
		tmf.tmf_vpidx = ISP_GET_VPIDX(isp, chan);
		tmf.tmf_lun[1] = fct->lun & 0xff;
		if (fct->lun >= 256) {
			tmf.tmf_lun[0] = 0x40 | (fct->lun >> 8);
		}
		switch (fct->action) {
		case IPT_CLEAR_ACA:
			tmf.tmf_flags = ISP24XX_TMF_CLEAR_ACA;
			break;
		case IPT_TARGET_RESET:
			tmf.tmf_flags = ISP24XX_TMF_TARGET_RESET;
			needmarker = 1;
			break;
		case IPT_LUN_RESET:
			tmf.tmf_flags = ISP24XX_TMF_LUN_RESET;
			needmarker = 1;
			break;
		case IPT_CLEAR_TASK_SET:
			tmf.tmf_flags = ISP24XX_TMF_CLEAR_TASK_SET;
			needmarker = 1;
			break;
		case IPT_ABORT_TASK_SET:
			tmf.tmf_flags = ISP24XX_TMF_ABORT_TASK_SET;
			needmarker = 1;
			break;
		default:
			retval = EINVAL;
			break;
		}
		if (retval) {
			ISP_UNLOCK(isp);
			break;
		}

		retval = isp_exec_entry_queue(isp, &tmf, &sp, 5);
		if (retval != 0) {
			isp_prt(isp, ISP_LOGERR, "%s: TMF of chan %d error %d",
			    __func__, chan, retval);
			ISP_UNLOCK(isp);
			break;
		}

		if (sp.req_completion_status != 0)
			retval = EIO;
		else if (needmarker)
			fcp->sendmarker = 1;
		ISP_UNLOCK(isp);
		break;
	}
	default:
		break;
	}
	return (retval);
}

/*
 * Local Inlines
 */

static ISP_INLINE int isp_get_pcmd(ispsoftc_t *, union ccb *);
static ISP_INLINE void isp_free_pcmd(ispsoftc_t *, union ccb *);

static ISP_INLINE int
isp_get_pcmd(ispsoftc_t *isp, union ccb *ccb)
{
	ISP_PCMD(ccb) = isp->isp_osinfo.pcmd_free;
	if (ISP_PCMD(ccb) == NULL) {
		return (-1);
	}
	isp->isp_osinfo.pcmd_free = ((struct isp_pcmd *)ISP_PCMD(ccb))->next;
	return (0);
}

static ISP_INLINE void
isp_free_pcmd(ispsoftc_t *isp, union ccb *ccb)
{
	if (ISP_PCMD(ccb)) {
#ifdef	ISP_TARGET_MODE
		PISP_PCMD(ccb)->datalen = 0;
#endif
		PISP_PCMD(ccb)->next = isp->isp_osinfo.pcmd_free;
		isp->isp_osinfo.pcmd_free = ISP_PCMD(ccb);
		ISP_PCMD(ccb) = NULL;
	}
}

/*
 * Put the target mode functions here, because some are inlines
 */
#ifdef	ISP_TARGET_MODE
static ISP_INLINE tstate_t *get_lun_statep(ispsoftc_t *, int, lun_id_t);
static atio_private_data_t *isp_get_atpd(ispsoftc_t *, int, uint32_t);
static atio_private_data_t *isp_find_atpd(ispsoftc_t *, int, uint32_t);
static void isp_put_atpd(ispsoftc_t *, int, atio_private_data_t *);
static inot_private_data_t *isp_get_ntpd(ispsoftc_t *, int);
static inot_private_data_t *isp_find_ntpd(ispsoftc_t *, int, uint32_t, uint32_t);
static void isp_put_ntpd(ispsoftc_t *, int, inot_private_data_t *);
static tstate_t *create_lun_state(ispsoftc_t *, int, struct cam_path *);
static void destroy_lun_state(ispsoftc_t *, int, tstate_t *);
static void isp_enable_lun(ispsoftc_t *, union ccb *);
static void isp_disable_lun(ispsoftc_t *, union ccb *);
static callout_func_t isp_refire_notify_ack;
static void isp_complete_ctio(ispsoftc_t *isp, union ccb *);
enum Start_Ctio_How { FROM_CAM, FROM_TIMER, FROM_SRR, FROM_CTIO_DONE };
static void isp_target_start_ctio(ispsoftc_t *, union ccb *, enum Start_Ctio_How);
static void isp_handle_platform_atio7(ispsoftc_t *, at7_entry_t *);
static void isp_handle_platform_ctio(ispsoftc_t *, ct7_entry_t *);
static int isp_handle_platform_target_notify_ack(ispsoftc_t *, isp_notify_t *, uint32_t rsp);
static void isp_handle_platform_target_tmf(ispsoftc_t *, isp_notify_t *);
static void isp_target_mark_aborted_early(ispsoftc_t *, int chan, tstate_t *, uint32_t);

static ISP_INLINE tstate_t *
get_lun_statep(ispsoftc_t *isp, int bus, lun_id_t lun)
{
	struct isp_fc *fc = ISP_FC_PC(isp, bus);
	tstate_t *tptr;

	SLIST_FOREACH(tptr, &fc->lun_hash[LUN_HASH_FUNC(lun)], next) {
		if (tptr->ts_lun == lun)
			return (tptr);
	}
	return (NULL);
}

static int
isp_atio_restart(ispsoftc_t *isp, int bus, tstate_t *tptr)
{
	inot_private_data_t *ntp;
	struct ntpdlist rq;

	if (STAILQ_EMPTY(&tptr->restart_queue))
		return (0);
	STAILQ_INIT(&rq);
	STAILQ_CONCAT(&rq, &tptr->restart_queue);
	while ((ntp = STAILQ_FIRST(&rq)) != NULL) {
		STAILQ_REMOVE_HEAD(&rq, next);
		isp_prt(isp, ISP_LOGTDEBUG0,
		    "%s: restarting resrc deprived %x", __func__,
		    ((at7_entry_t *)ntp->data)->at_rxid);
		isp_handle_platform_atio7(isp, (at7_entry_t *) ntp->data);
		isp_put_ntpd(isp, bus, ntp);
		if (!STAILQ_EMPTY(&tptr->restart_queue))
			break;
	}
	if (!STAILQ_EMPTY(&rq)) {
		STAILQ_CONCAT(&rq, &tptr->restart_queue);
		STAILQ_CONCAT(&tptr->restart_queue, &rq);
	}
	return (!STAILQ_EMPTY(&tptr->restart_queue));
}

static void
isp_tmcmd_restart(ispsoftc_t *isp)
{
	struct isp_fc *fc;
	tstate_t *tptr;
	union ccb *ccb;
	int bus, i;

	for (bus = 0; bus < isp->isp_nchan; bus++) {
		fc = ISP_FC_PC(isp, bus);
		for (i = 0; i < LUN_HASH_SIZE; i++) {
			SLIST_FOREACH(tptr, &fc->lun_hash[i], next)
				isp_atio_restart(isp, bus, tptr);
		}

		/*
		 * We only need to do this once per channel.
		 */
		ccb = (union ccb *)TAILQ_FIRST(&fc->waitq);
		if (ccb != NULL) {
			TAILQ_REMOVE(&fc->waitq, &ccb->ccb_h, sim_links.tqe);
			isp_target_start_ctio(isp, ccb, FROM_TIMER);
		}
	}
	isp_rq_check_above(isp);
	isp_rq_check_below(isp);
}

static atio_private_data_t *
isp_get_atpd(ispsoftc_t *isp, int chan, uint32_t tag)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	atio_private_data_t *atp;

	atp = LIST_FIRST(&fc->atfree);
	if (atp) {
		LIST_REMOVE(atp, next);
		atp->tag = tag;
		LIST_INSERT_HEAD(&fc->atused[ATPDPHASH(tag)], atp, next);
	}
	return (atp);
}

static atio_private_data_t *
isp_find_atpd(ispsoftc_t *isp, int chan, uint32_t tag)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	atio_private_data_t *atp;

	LIST_FOREACH(atp, &fc->atused[ATPDPHASH(tag)], next) {
		if (atp->tag == tag)
			return (atp);
	}
	return (NULL);
}

static void
isp_put_atpd(ispsoftc_t *isp, int chan, atio_private_data_t *atp)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	if (atp->ests)
		isp_put_ecmd(isp, atp->ests);
	LIST_REMOVE(atp, next);
	memset(atp, 0, sizeof (*atp));
	LIST_INSERT_HEAD(&fc->atfree, atp, next);
}

static void
isp_dump_atpd(ispsoftc_t *isp, int chan)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	atio_private_data_t *atp;
	const char *states[8] = { "Free", "ATIO", "CAM", "CTIO", "LAST_CTIO", "PDON", "?6", "7" };

	for (atp = fc->atpool; atp < &fc->atpool[ATPDPSIZE]; atp++) {
		if (atp->state == ATPD_STATE_FREE)
			continue;
		isp_prt(isp, ISP_LOGALL, "Chan %d ATP [0x%x] origdlen %u bytes_xfrd %u lun %jx nphdl 0x%04x s_id 0x%06x d_id 0x%06x oxid 0x%04x state %s",
		    chan, atp->tag, atp->orig_datalen, atp->bytes_xfered, (uintmax_t)atp->lun, atp->nphdl, atp->sid, atp->did, atp->oxid, states[atp->state & 0x7]);
	}
}

static inot_private_data_t *
isp_get_ntpd(ispsoftc_t *isp, int chan)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	inot_private_data_t *ntp;

	ntp = STAILQ_FIRST(&fc->ntfree);
	if (ntp)
		STAILQ_REMOVE_HEAD(&fc->ntfree, next);
	return (ntp);
}

static inot_private_data_t *
isp_find_ntpd(ispsoftc_t *isp, int chan, uint32_t tag_id, uint32_t seq_id)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	inot_private_data_t *ntp;

	for (ntp = fc->ntpool; ntp < &fc->ntpool[ATPDPSIZE]; ntp++) {
		if (ntp->tag_id == tag_id && ntp->seq_id == seq_id)
			return (ntp);
	}
	return (NULL);
}

static void
isp_put_ntpd(ispsoftc_t *isp, int chan, inot_private_data_t *ntp)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	ntp->tag_id = ntp->seq_id = 0;
	STAILQ_INSERT_HEAD(&fc->ntfree, ntp, next);
}

tstate_t *
create_lun_state(ispsoftc_t *isp, int bus, struct cam_path *path)
{
	struct isp_fc *fc = ISP_FC_PC(isp, bus);
	lun_id_t lun;
	tstate_t *tptr;

	lun = xpt_path_lun_id(path);
	tptr = malloc(sizeof (tstate_t), M_DEVBUF, M_NOWAIT|M_ZERO);
	if (tptr == NULL)
		return (NULL);
	tptr->ts_lun = lun;
	SLIST_INIT(&tptr->atios);
	SLIST_INIT(&tptr->inots);
	STAILQ_INIT(&tptr->restart_queue);
	SLIST_INSERT_HEAD(&fc->lun_hash[LUN_HASH_FUNC(lun)], tptr, next);
	ISP_PATH_PRT(isp, ISP_LOGTDEBUG0, path, "created tstate\n");
	return (tptr);
}

static void
destroy_lun_state(ispsoftc_t *isp, int bus, tstate_t *tptr)
{
	struct isp_fc *fc = ISP_FC_PC(isp, bus);
	union ccb *ccb;
	inot_private_data_t *ntp;

	while ((ccb = (union ccb *)SLIST_FIRST(&tptr->atios)) != NULL) {
		SLIST_REMOVE_HEAD(&tptr->atios, sim_links.sle);
		ccb->ccb_h.status = CAM_REQ_ABORTED;
		xpt_done(ccb);
	};
	while ((ccb = (union ccb *)SLIST_FIRST(&tptr->inots)) != NULL) {
		SLIST_REMOVE_HEAD(&tptr->inots, sim_links.sle);
		ccb->ccb_h.status = CAM_REQ_ABORTED;
		xpt_done(ccb);
	}
	while ((ntp = STAILQ_FIRST(&tptr->restart_queue)) != NULL) {
		isp_endcmd(isp, ntp->data, NIL_HANDLE, bus, SCSI_STATUS_BUSY, 0);
		STAILQ_REMOVE_HEAD(&tptr->restart_queue, next);
		isp_put_ntpd(isp, bus, ntp);
	}
	SLIST_REMOVE(&fc->lun_hash[LUN_HASH_FUNC(tptr->ts_lun)], tptr, tstate, next);
	free(tptr, M_DEVBUF);
}

static void
isp_enable_lun(ispsoftc_t *isp, union ccb *ccb)
{
	tstate_t *tptr;
	int bus = XS_CHANNEL(ccb);
	target_id_t target = ccb->ccb_h.target_id;
	lun_id_t lun = ccb->ccb_h.target_lun;

	/*
	 * We only support either target and lun both wildcard
	 * or target and lun both non-wildcard.
	 */
	ISP_PATH_PRT(isp, ISP_LOGTDEBUG0|ISP_LOGCONFIG, ccb->ccb_h.path,
	    "enabling lun %jx\n", (uintmax_t)lun);
	if ((target == CAM_TARGET_WILDCARD) != (lun == CAM_LUN_WILDCARD)) {
		ccb->ccb_h.status = CAM_LUN_INVALID;
		xpt_done(ccb);
		return;
	}

	/* Create the state pointer. It should not already exist. */
	tptr = get_lun_statep(isp, bus, lun);
	if (tptr) {
		ccb->ccb_h.status = CAM_LUN_ALRDY_ENA;
		xpt_done(ccb);
		return;
	}
	tptr = create_lun_state(isp, bus, ccb->ccb_h.path);
	if (tptr == NULL) {
		ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
		xpt_done(ccb);
		return;
	}

	ccb->ccb_h.status = CAM_REQ_CMP;
	xpt_done(ccb);
}

static void
isp_disable_lun(ispsoftc_t *isp, union ccb *ccb)
{
	tstate_t *tptr;
	int bus = XS_CHANNEL(ccb);
	target_id_t target = ccb->ccb_h.target_id;
	lun_id_t lun = ccb->ccb_h.target_lun;

	ISP_PATH_PRT(isp, ISP_LOGTDEBUG0|ISP_LOGCONFIG, ccb->ccb_h.path,
	    "disabling lun %jx\n", (uintmax_t)lun);
	if ((target == CAM_TARGET_WILDCARD) != (lun == CAM_LUN_WILDCARD)) {
		ccb->ccb_h.status = CAM_LUN_INVALID;
		xpt_done(ccb);
		return;
	}

	/* Find the state pointer. */
	if ((tptr = get_lun_statep(isp, bus, lun)) == NULL) {
		ccb->ccb_h.status = CAM_PATH_INVALID;
		xpt_done(ccb);
		return;
	}

	destroy_lun_state(isp, bus, tptr);
	ccb->ccb_h.status = CAM_REQ_CMP;
	xpt_done(ccb);
}

static void
isp_target_start_ctio(ispsoftc_t *isp, union ccb *ccb, enum Start_Ctio_How how)
{
	int fctape, sendstatus, resid;
	fcparam *fcp;
	atio_private_data_t *atp;
	struct ccb_scsiio *cso;
	struct isp_ccbq *waitq;
	uint32_t dmaresult, handle, xfrlen, sense_length, tmp;
	ct7_entry_t local, *cto = &local;

	isp_prt(isp, ISP_LOGTDEBUG0, "%s: ENTRY[0x%x] how %u xfrlen %u sendstatus %d sense_len %u", __func__, ccb->csio.tag_id, how, ccb->csio.dxfer_len,
	    (ccb->ccb_h.flags & CAM_SEND_STATUS) != 0, ((ccb->ccb_h.flags & CAM_SEND_SENSE)? ccb->csio.sense_len : 0));

	waitq = &ISP_FC_PC(isp, XS_CHANNEL(ccb))->waitq;
	switch (how) {
	case FROM_CAM:
		/*
		 * Insert at the tail of the list, if any, waiting CTIO CCBs
		 */
		TAILQ_INSERT_TAIL(waitq, &ccb->ccb_h, sim_links.tqe);
		break;
	case FROM_TIMER:
	case FROM_SRR:
	case FROM_CTIO_DONE:
		TAILQ_INSERT_HEAD(waitq, &ccb->ccb_h, sim_links.tqe);
		break;
	}

	while ((ccb = (union ccb *) TAILQ_FIRST(waitq)) != NULL) {
		TAILQ_REMOVE(waitq, &ccb->ccb_h, sim_links.tqe);

		cso = &ccb->csio;
		xfrlen = cso->dxfer_len;
		if (xfrlen == 0) {
			if ((ccb->ccb_h.flags & CAM_SEND_STATUS) == 0) {
				ISP_PATH_PRT(isp, ISP_LOGERR, ccb->ccb_h.path, "a data transfer length of zero but no status to send is wrong\n");
				ccb->ccb_h.status = CAM_REQ_INVALID;
				xpt_done(ccb);
				continue;
			}
		}

		atp = isp_find_atpd(isp, XS_CHANNEL(ccb), cso->tag_id);
		if (atp == NULL) {
			isp_prt(isp, ISP_LOGERR, "%s: [0x%x] cannot find private data adjunct in %s", __func__, cso->tag_id, __func__);
			isp_dump_atpd(isp, XS_CHANNEL(ccb));
			ccb->ccb_h.status = CAM_REQ_CMP_ERR;
			xpt_done(ccb);
			continue;
		}

		/*
		 * Is this command a dead duck?
		 */
		if (atp->dead) {
			isp_prt(isp, ISP_LOGERR, "%s: [0x%x] not sending a CTIO for a dead command", __func__, cso->tag_id);
			ccb->ccb_h.status = CAM_REQ_ABORTED;
			xpt_done(ccb);
			continue;
		}

		/*
		 * Check to make sure we're still in target mode.
		 */
		fcp = FCPARAM(isp, XS_CHANNEL(ccb));
		if ((fcp->role & ISP_ROLE_TARGET) == 0) {
			isp_prt(isp, ISP_LOGERR, "%s: [0x%x] stopping sending a CTIO because we're no longer in target mode", __func__, cso->tag_id);
			ccb->ccb_h.status = CAM_PROVIDE_FAIL;
			xpt_done(ccb);
			continue;
		}

		/*
		 * We're only handling ATPD_CCB_OUTSTANDING outstanding CCB at a time (one of which
		 * could be split into two CTIOs to split data and status).
		 */
		if (atp->ctcnt >= ATPD_CCB_OUTSTANDING) {
			isp_prt(isp, ISP_LOGTINFO, "[0x%x] handling only %d CCBs at a time (flags for this ccb: 0x%x)", cso->tag_id, ATPD_CCB_OUTSTANDING, ccb->ccb_h.flags);
			TAILQ_INSERT_HEAD(waitq, &ccb->ccb_h, sim_links.tqe);
			break;
		}

		/*
		 * Does the initiator expect FC-Tape style responses?
		 */
		if ((atp->word3 & PRLI_WD3_RETRY) && fcp->fctape_enabled) {
			fctape = 1;
		} else {
			fctape = 0;
		}

		/*
		 * If we already did the data xfer portion of a CTIO that sends data
		 * and status, don't do it again and do the status portion now.
		 */
		if (atp->sendst) {
			isp_prt(isp, ISP_LOGTDEBUG0, "[0x%x] now sending synthesized status orig_dl=%u xfered=%u bit=%u",
			    cso->tag_id, atp->orig_datalen, atp->bytes_xfered, atp->bytes_in_transit);
			xfrlen = 0;	/* we already did the data transfer */
			atp->sendst = 0;
		}
		if (ccb->ccb_h.flags & CAM_SEND_STATUS) {
			sendstatus = 1;
		} else {
			sendstatus = 0;
		}

		if (ccb->ccb_h.flags & CAM_SEND_SENSE) {
			KASSERT((sendstatus != 0), ("how can you have CAM_SEND_SENSE w/o CAM_SEND_STATUS?"));
			/*
			 * Sense length is not the entire sense data structure size. Periph
			 * drivers don't seem to be setting sense_len to reflect the actual
			 * size. We'll peek inside to get the right amount.
			 */
			sense_length = cso->sense_len;

			/*
			 * This 'cannot' happen
			 */
			if (sense_length > (XCMD_SIZE - MIN_FCP_RESPONSE_SIZE)) {
				sense_length = XCMD_SIZE - MIN_FCP_RESPONSE_SIZE;
			}
		} else {
			sense_length = 0;
		}

		/*
		 * Check for overflow
		 */
		tmp = atp->bytes_xfered + atp->bytes_in_transit;
		if (xfrlen > 0 && tmp > atp->orig_datalen) {
			isp_prt(isp, ISP_LOGERR,
			    "%s: [0x%x] data overflow by %u bytes", __func__,
			    cso->tag_id, tmp + xfrlen - atp->orig_datalen);
			ccb->ccb_h.status = CAM_DATA_RUN_ERR;
			xpt_done(ccb);
			continue;
		}
		if (xfrlen > atp->orig_datalen - tmp) {
			xfrlen = atp->orig_datalen - tmp;
			if (xfrlen == 0 && !sendstatus) {
				cso->resid = cso->dxfer_len;
				ccb->ccb_h.status = CAM_REQ_CMP;
				xpt_done(ccb);
				continue;
			}
		}

		memset(cto, 0, QENTRY_LEN);
		cto->ct_header.rqs_entry_type = RQSTYPE_CTIO7;
		cto->ct_header.rqs_entry_count = 1;
		cto->ct_header.rqs_seqno |= ATPD_SEQ_NOTIFY_CAM;
		ATPD_SET_SEQNO(cto, atp);
		cto->ct_nphdl = atp->nphdl;
		cto->ct_rxid = atp->tag;
		cto->ct_iid_lo = atp->sid;
		cto->ct_iid_hi = atp->sid >> 16;
		cto->ct_oxid = atp->oxid;
		cto->ct_vpidx = ISP_GET_VPIDX(isp, XS_CHANNEL(ccb));
		cto->ct_timeout = XS_TIME(ccb);
		cto->ct_flags = atp->tattr << CT7_TASK_ATTR_SHIFT;

		/*
		 * Mode 1, status, no data. Only possible when we are sending status, have
		 * no data to transfer, and any sense data can fit into a ct7_entry_t.
		 *
		 * Mode 2, status, no data. We have to use this in the case that
		 * the sense data won't fit into a ct7_entry_t.
		 *
		 */
		if (sendstatus && xfrlen == 0) {
			cto->ct_flags |= CT7_SENDSTATUS | CT7_NO_DATA;
			resid = atp->orig_datalen - atp->bytes_xfered - atp->bytes_in_transit;
			if (sense_length <= MAXRESPLEN_24XX) {
				cto->ct_flags |= CT7_FLAG_MODE1;
				cto->ct_scsi_status = cso->scsi_status;
				if (resid < 0) {
					cto->ct_resid = -resid;
					cto->ct_scsi_status |= (FCP_RESID_OVERFLOW << 8);
				} else if (resid > 0) {
					cto->ct_resid = resid;
					cto->ct_scsi_status |= (FCP_RESID_UNDERFLOW << 8);
				}
				if (fctape) {
					cto->ct_flags |= CT7_CONFIRM|CT7_EXPLCT_CONF;
				}
				if (sense_length) {
					cto->ct_scsi_status |= (FCP_SNSLEN_VALID << 8);
					cto->rsp.m1.ct_resplen = cto->ct_senselen = sense_length;
					memcpy(cto->rsp.m1.ct_resp, &cso->sense_data, sense_length);
				}
			} else {
				bus_addr_t addr;
				fcp_rsp_iu_t rp;

				if (atp->ests == NULL) {
					atp->ests = isp_get_ecmd(isp);
					if (atp->ests == NULL) {
						TAILQ_INSERT_HEAD(waitq, &ccb->ccb_h, sim_links.tqe);
						break;
					}
				}
				memset(&rp, 0, sizeof(rp));
				if (fctape) {
					cto->ct_flags |= CT7_CONFIRM|CT7_EXPLCT_CONF;
					rp.fcp_rsp_bits |= FCP_CONF_REQ;
				}
				cto->ct_flags |= CT7_FLAG_MODE2;
				rp.fcp_rsp_scsi_status = cso->scsi_status;
				if (resid < 0) {
					rp.fcp_rsp_resid = -resid;
					rp.fcp_rsp_bits |= FCP_RESID_OVERFLOW;
				} else if (resid > 0) {
					rp.fcp_rsp_resid = resid;
					rp.fcp_rsp_bits |= FCP_RESID_UNDERFLOW;
				}
				if (sense_length) {
					rp.fcp_rsp_snslen = sense_length;
					cto->ct_senselen = sense_length;
					rp.fcp_rsp_bits |= FCP_SNSLEN_VALID;
					isp_put_fcp_rsp_iu(isp, &rp, atp->ests);
					memcpy(((fcp_rsp_iu_t *)atp->ests)->fcp_rsp_extra, &cso->sense_data, sense_length);
				} else {
					isp_put_fcp_rsp_iu(isp, &rp, atp->ests);
				}
				if (isp->isp_dblev & ISP_LOGTDEBUG1) {
					isp_print_bytes(isp, "FCP Response Frame After Swizzling", MIN_FCP_RESPONSE_SIZE + sense_length, atp->ests);
				}
				bus_dmamap_sync(isp->isp_osinfo.ecmd_dmat, isp->isp_osinfo.ecmd_map, BUS_DMASYNC_PREWRITE);
				addr = isp->isp_osinfo.ecmd_dma;
				addr += ((((isp_ecmd_t *)atp->ests) - isp->isp_osinfo.ecmd_base) * XCMD_SIZE);
				isp_prt(isp, ISP_LOGTDEBUG0, "%s: ests base %p vaddr %p ecmd_dma %jx addr %jx len %u", __func__, isp->isp_osinfo.ecmd_base, atp->ests,
				    (uintmax_t) isp->isp_osinfo.ecmd_dma, (uintmax_t)addr, MIN_FCP_RESPONSE_SIZE + sense_length);
				cto->rsp.m2.ct_datalen = MIN_FCP_RESPONSE_SIZE + sense_length;
				cto->rsp.m2.ct_fcp_rsp_iudata.ds_base = DMA_LO32(addr);
				cto->rsp.m2.ct_fcp_rsp_iudata.ds_basehi = DMA_HI32(addr);
				cto->rsp.m2.ct_fcp_rsp_iudata.ds_count = MIN_FCP_RESPONSE_SIZE + sense_length;
			}
			if (sense_length) {
				isp_prt(isp, ISP_LOGTDEBUG0, "%s: CTIO7[0x%x] seq %u nc %d CDB0=%x sstatus=0x%x flags=0x%x resid=%d slen %u sense: %x %x/%x/%x", __func__,
				    cto->ct_rxid, ATPD_GET_SEQNO(cto), ATPD_GET_NCAM(cto), atp->cdb0, cto->ct_scsi_status, cto->ct_flags, cto->ct_resid, sense_length,
				    cso->sense_data.error_code, cso->sense_data.sense_buf[1], cso->sense_data.sense_buf[11], cso->sense_data.sense_buf[12]);
			} else {
				isp_prt(isp, ISP_LOGDEBUG0, "%s: CTIO7[0x%x] seq %u nc %d CDB0=%x sstatus=0x%x flags=0x%x resid=%d", __func__,
				    cto->ct_rxid, ATPD_GET_SEQNO(cto), ATPD_GET_NCAM(cto), atp->cdb0, cto->ct_scsi_status, cto->ct_flags, cto->ct_resid);
			}
			atp->state = ATPD_STATE_LAST_CTIO;
		}

		/*
		 * Mode 0 data transfers, *possibly* with status.
		 */
		if (xfrlen != 0) {
			cto->ct_flags |= CT7_FLAG_MODE0;
			if ((cso->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
				cto->ct_flags |= CT7_DATA_IN;
			} else {
				cto->ct_flags |= CT7_DATA_OUT;
			}

			cto->rsp.m0.reloff = atp->bytes_xfered + atp->bytes_in_transit;
			cto->rsp.m0.ct_xfrlen = xfrlen;

#ifdef	DEBUG
			if (ISP_FC_PC(isp, XS_CHANNEL(ccb))->inject_lost_data_frame && xfrlen > ISP_FC_PC(isp, XS_CHANNEL(ccb))->inject_lost_data_frame) {
				isp_prt(isp, ISP_LOGWARN, "%s: truncating data frame with xfrlen %d to %d", __func__, xfrlen, xfrlen - (xfrlen >> 2));
				ISP_FC_PC(isp, XS_CHANNEL(ccb))->inject_lost_data_frame = 0;
				cto->rsp.m0.ct_xfrlen -= xfrlen >> 2;
			}
#endif
			if (sendstatus) {
				resid = atp->orig_datalen - atp->bytes_xfered - xfrlen;
				if (cso->scsi_status == SCSI_STATUS_OK && resid == 0 /* && fctape == 0 */) {
					cto->ct_flags |= CT7_SENDSTATUS;
					atp->state = ATPD_STATE_LAST_CTIO;
					if (fctape) {
						cto->ct_flags |= CT7_CONFIRM|CT7_EXPLCT_CONF;
					}
				} else {
					atp->sendst = 1;	/* send status later */
					cto->ct_header.rqs_seqno &= ~ATPD_SEQ_NOTIFY_CAM;
					atp->state = ATPD_STATE_CTIO;
				}
			} else {
				atp->state = ATPD_STATE_CTIO;
			}
			isp_prt(isp, ISP_LOGTDEBUG0, "%s: CTIO7[0x%x] seq %u nc %d CDB0=%x sstatus=0x%x flags=0x%x xfrlen=%u off=%u", __func__,
			    cto->ct_rxid, ATPD_GET_SEQNO(cto), ATPD_GET_NCAM(cto), atp->cdb0, cto->ct_scsi_status, cto->ct_flags, xfrlen, atp->bytes_xfered);
		}

		if (isp_get_pcmd(isp, ccb)) {
			ISP_PATH_PRT(isp, ISP_LOGWARN, ccb->ccb_h.path, "out of PCMDs\n");
			TAILQ_INSERT_HEAD(waitq, &ccb->ccb_h, sim_links.tqe);
			break;
		}
		handle = isp_allocate_handle(isp, ccb, ISP_HANDLE_TARGET);
		if (handle == 0) {
			ISP_PATH_PRT(isp, ISP_LOGWARN, ccb->ccb_h.path, "No XFLIST pointers for %s\n", __func__);
			TAILQ_INSERT_HEAD(waitq, &ccb->ccb_h, sim_links.tqe);
			isp_free_pcmd(isp, ccb);
			break;
		}
		atp->bytes_in_transit += xfrlen;
		PISP_PCMD(ccb)->datalen = xfrlen;

		/*
		 * Call the dma setup routines for this entry (and any subsequent
		 * CTIOs) if there's data to move, and then tell the f/w it's got
		 * new things to play with. As with isp_start's usage of DMA setup,
		 * any swizzling is done in the machine dependent layer. Because
		 * of this, we put the request onto the queue area first in native
		 * format.
		 */
		cto->ct_syshandle = handle;
		dmaresult = ISP_DMASETUP(isp, cso, cto);
		if (dmaresult != 0) {
			isp_destroy_handle(isp, handle);
			isp_free_pcmd(isp, ccb);
			if (dmaresult == CMD_EAGAIN) {
				TAILQ_INSERT_HEAD(waitq, &ccb->ccb_h, sim_links.tqe);
				break;
			}
			ccb->ccb_h.status = CAM_REQ_CMP_ERR;
			xpt_done(ccb);
			continue;
		}
		ccb->ccb_h.status = CAM_REQ_INPROG | CAM_SIM_QUEUED;
		if (xfrlen) {
			ccb->ccb_h.spriv_field0 = atp->bytes_xfered;
		} else {
			ccb->ccb_h.spriv_field0 = ~0;
		}
		atp->ctcnt++;
		atp->seqno++;
	}
}

static void
isp_refire_notify_ack(void *arg)
{
	isp_tna_t *tp  = arg;
	ispsoftc_t *isp = tp->isp;

	ISP_ASSERT_LOCKED(isp);
	if (isp_notify_ack(isp, tp->not)) {
		callout_schedule(&tp->timer, 5);
	} else {
		free(tp, M_DEVBUF);
	}
}


static void
isp_complete_ctio(ispsoftc_t *isp, union ccb *ccb)
{

	isp_rq_check_below(isp);
	ccb->ccb_h.status &= ~CAM_SIM_QUEUED;
	xpt_done(ccb);
}

static void
isp_handle_platform_atio7(ispsoftc_t *isp, at7_entry_t *aep)
{
	int cdbxlen;
	lun_id_t lun;
	uint16_t chan, nphdl = NIL_HANDLE;
	uint32_t did, sid;
	fcportdb_t *lp;
	tstate_t *tptr;
	struct ccb_accept_tio *atiop;
	atio_private_data_t *atp = NULL;
	atio_private_data_t *oatp;
	inot_private_data_t *ntp;

	did = (aep->at_hdr.d_id[0] << 16) | (aep->at_hdr.d_id[1] << 8) | aep->at_hdr.d_id[2];
	sid = (aep->at_hdr.s_id[0] << 16) | (aep->at_hdr.s_id[1] << 8) | aep->at_hdr.s_id[2];
	lun = CAM_EXTLUN_BYTE_SWIZZLE(be64dec(aep->at_cmnd.fcp_cmnd_lun));

	if (ISP_CAP_MULTI_ID(isp) && isp->isp_nchan > 1) {
		/* Channel has to be derived from D_ID */
		isp_find_chan_by_did(isp, did, &chan);
		if (chan == ISP_NOCHAN) {
			isp_prt(isp, ISP_LOGWARN,
			    "%s: [RX_ID 0x%x] D_ID %x not found on any channel",
			    __func__, aep->at_rxid, did);
			isp_endcmd(isp, aep, NIL_HANDLE, ISP_NOCHAN,
			    ECMD_TERMINATE, 0);
			return;
		}
	} else {
		chan = 0;
	}

	/*
	 * Find the PDB entry for this initiator
	 */
	if (isp_find_pdb_by_portid(isp, chan, sid, &lp) == 0) {
		/*
		 * If we're not in the port database terminate the exchange.
		 */
		isp_prt(isp, ISP_LOGTINFO, "%s: [RX_ID 0x%x] D_ID 0x%06x found on Chan %d for S_ID 0x%06x wasn't in PDB already",
		    __func__, aep->at_rxid, did, chan, sid);
		isp_dump_portdb(isp, chan);
		isp_endcmd(isp, aep, NIL_HANDLE, chan, ECMD_TERMINATE, 0);
		return;
	}
	nphdl = lp->handle;

	/*
	 * Get the tstate pointer
	 */
	tptr = get_lun_statep(isp, chan, lun);
	if (tptr == NULL) {
		tptr = get_lun_statep(isp, chan, CAM_LUN_WILDCARD);
		if (tptr == NULL) {
			isp_prt(isp, ISP_LOGWARN,
			    "%s: [0x%x] no state pointer for lun %jx or wildcard",
			    __func__, aep->at_rxid, (uintmax_t)lun);
			if (lun == 0) {
				isp_endcmd(isp, aep, nphdl, chan, SCSI_STATUS_BUSY, 0);
			} else {
				isp_endcmd(isp, aep, nphdl, chan, SCSI_STATUS_CHECK_COND | ECMD_SVALID | (0x5 << 12) | (0x25 << 16), 0);
			}
			return;
		}
	}

	/*
	 * Start any commands pending resources first.
	 */
	if (isp_atio_restart(isp, chan, tptr))
		goto noresrc;

	/*
	 * If the f/w is out of resources, just send a BUSY status back.
	 */
	if (aep->at_rxid == AT7_NORESRC_RXID) {
		isp_endcmd(isp, aep, nphdl, chan, SCSI_BUSY, 0);
		return;
	}

	/*
	 * If we're out of resources, just send a BUSY status back.
	 */
	atiop = (struct ccb_accept_tio *) SLIST_FIRST(&tptr->atios);
	if (atiop == NULL) {
		isp_prt(isp, ISP_LOGTDEBUG0, "[0x%x] out of atios", aep->at_rxid);
		goto noresrc;
	}

	oatp = isp_find_atpd(isp, chan, aep->at_rxid);
	if (oatp) {
		isp_prt(isp, oatp->state == ATPD_STATE_LAST_CTIO ? ISP_LOGTDEBUG0 :
		    ISP_LOGWARN, "[0x%x] tag wraparound (N-Port Handle "
		    "0x%04x S_ID 0x%04x OX_ID 0x%04x) oatp state %d",
		    aep->at_rxid, nphdl, sid, aep->at_hdr.ox_id, oatp->state);
		/*
		 * It's not a "no resource" condition- but we can treat it like one
		 */
		goto noresrc;
	}
	atp = isp_get_atpd(isp, chan, aep->at_rxid);
	if (atp == NULL) {
		isp_prt(isp, ISP_LOGTDEBUG0, "[0x%x] out of atps", aep->at_rxid);
		isp_endcmd(isp, aep, nphdl, chan, SCSI_BUSY, 0);
		return;
	}
	atp->word3 = lp->prli_word3;
	atp->state = ATPD_STATE_ATIO;
	SLIST_REMOVE_HEAD(&tptr->atios, sim_links.sle);
	ISP_PATH_PRT(isp, ISP_LOGTDEBUG2, atiop->ccb_h.path, "Take FREE ATIO\n");
	atiop->init_id = FC_PORTDB_TGT(isp, chan, lp);
	atiop->ccb_h.target_id = ISP_MAX_TARGETS(isp);
	atiop->ccb_h.target_lun = lun;
	atiop->sense_len = 0;
	cdbxlen = aep->at_cmnd.fcp_cmnd_alen_datadir >> FCP_CMND_ADDTL_CDBLEN_SHIFT;
	if (cdbxlen) {
		isp_prt(isp, ISP_LOGWARN, "additional CDBLEN ignored");
	}
	cdbxlen = sizeof (aep->at_cmnd.cdb_dl.sf.fcp_cmnd_cdb);
	ISP_MEMCPY(atiop->cdb_io.cdb_bytes, aep->at_cmnd.cdb_dl.sf.fcp_cmnd_cdb, cdbxlen);
	atiop->cdb_len = cdbxlen;
	atiop->ccb_h.status = CAM_CDB_RECVD;
	atiop->tag_id = atp->tag;
	switch (aep->at_cmnd.fcp_cmnd_task_attribute & FCP_CMND_TASK_ATTR_MASK) {
	case FCP_CMND_TASK_ATTR_SIMPLE:
		atiop->ccb_h.flags |= CAM_TAG_ACTION_VALID;
		atiop->tag_action = MSG_SIMPLE_TASK;
		break;
	case FCP_CMND_TASK_ATTR_HEAD:
		atiop->ccb_h.flags |= CAM_TAG_ACTION_VALID;
		atiop->tag_action = MSG_HEAD_OF_QUEUE_TASK;
		break;
	case FCP_CMND_TASK_ATTR_ORDERED:
		atiop->ccb_h.flags |= CAM_TAG_ACTION_VALID;
		atiop->tag_action = MSG_ORDERED_TASK;
		break;
	case FCP_CMND_TASK_ATTR_ACA:
		atiop->ccb_h.flags |= CAM_TAG_ACTION_VALID;
		atiop->tag_action = MSG_ACA_TASK;
		break;
	case FCP_CMND_TASK_ATTR_UNTAGGED:
	default:
		atiop->tag_action = 0;
		break;
	}
	atiop->priority = (aep->at_cmnd.fcp_cmnd_task_attribute &
	    FCP_CMND_PRIO_MASK) >> FCP_CMND_PRIO_SHIFT;
	atp->orig_datalen = aep->at_cmnd.cdb_dl.sf.fcp_cmnd_dl;
	atp->bytes_xfered = 0;
	atp->lun = lun;
	atp->nphdl = nphdl;
	atp->sid = sid;
	atp->did = did;
	atp->oxid = aep->at_hdr.ox_id;
	atp->rxid = aep->at_hdr.rx_id;
	atp->cdb0 = atiop->cdb_io.cdb_bytes[0];
	atp->tattr = aep->at_cmnd.fcp_cmnd_task_attribute & FCP_CMND_TASK_ATTR_MASK;
	atp->state = ATPD_STATE_CAM;
	isp_prt(isp, ISP_LOGTDEBUG0, "ATIO7[0x%x] CDB=0x%x lun %jx datalen %u",
	    aep->at_rxid, atp->cdb0, (uintmax_t)lun, atp->orig_datalen);
	xpt_done((union ccb *)atiop);
	return;
noresrc:
	KASSERT(atp == NULL, ("%s: atp is not NULL on noresrc!\n", __func__));
	ntp = isp_get_ntpd(isp, chan);
	if (ntp == NULL) {
		isp_endcmd(isp, aep, nphdl, chan, SCSI_STATUS_BUSY, 0);
		return;
	}
	memcpy(ntp->data, aep, QENTRY_LEN);
	STAILQ_INSERT_TAIL(&tptr->restart_queue, ntp, next);
}


/*
 * Handle starting an SRR (sequence retransmit request)
 * We get here when we've gotten the immediate notify
 * and the return of all outstanding CTIOs for this
 * transaction.
 */
static void
isp_handle_srr_start(ispsoftc_t *isp, atio_private_data_t *atp)
{
	in_fcentry_24xx_t *inot;
	uint32_t srr_off, ccb_off, ccb_len, ccb_end;
	union ccb *ccb;

	inot = (in_fcentry_24xx_t *)atp->srr;
	srr_off = inot->in_srr_reloff_lo | (inot->in_srr_reloff_hi << 16);
	ccb = atp->srr_ccb;
	atp->srr_ccb = NULL;
	atp->nsrr++;
	if (ccb == NULL) {
		isp_prt(isp, ISP_LOGWARN, "SRR[0x%x] null ccb", atp->tag);
		goto fail;
	}

	ccb_off = ccb->ccb_h.spriv_field0;
	ccb_len = ccb->csio.dxfer_len;
        ccb_end = (ccb_off == ~0)? ~0 : ccb_off + ccb_len;

	switch (inot->in_srr_iu) {
	case R_CTL_INFO_SOLICITED_DATA:
		/*
		 * We have to restart a FCP_DATA data out transaction
		 */
		atp->sendst = 0;
		atp->bytes_xfered = srr_off;
		if (ccb_len == 0) {
			isp_prt(isp, ISP_LOGWARN, "SRR[0x%x] SRR offset 0x%x but current CCB doesn't transfer data", atp->tag, srr_off);
			goto mdp;
		}
 		if (srr_off < ccb_off || ccb_off > srr_off + ccb_len) {
			isp_prt(isp, ISP_LOGWARN, "SRR[0x%x] SRR offset 0x%x not covered by current CCB data range [0x%x..0x%x]", atp->tag, srr_off, ccb_off, ccb_end);
			goto mdp;
		}
		isp_prt(isp, ISP_LOGWARN, "SRR[0x%x] SRR offset 0x%x covered by current CCB data range [0x%x..0x%x]", atp->tag, srr_off, ccb_off, ccb_end);
		break;
	case R_CTL_INFO_COMMAND_STATUS:
		isp_prt(isp, ISP_LOGTINFO, "SRR[0x%x] Got an FCP RSP SRR- resending status", atp->tag);
		atp->sendst = 1;
		/*
		 * We have to restart a FCP_RSP IU transaction
		 */
		break;
	case R_CTL_INFO_DATA_DESCRIPTOR:
		/*
		 * We have to restart an FCP DATA in transaction
		 */
		isp_prt(isp, ISP_LOGWARN, "Got an FCP DATA IN SRR- dropping");
		goto fail;

	default:
		isp_prt(isp, ISP_LOGWARN, "Got an unknown information (%x) SRR- dropping", inot->in_srr_iu);
		goto fail;
	}

	/*
	 * We can't do anything until this is acked, so we might as well start it now.
	 * We aren't going to do the usual asynchronous ack issue because we need
	 * to make sure this gets on the wire first.
	 */
	if (isp_notify_ack(isp, inot)) {
		isp_prt(isp, ISP_LOGWARN, "could not push positive ack for SRR- you lose");
		goto fail;
	}
	isp_target_start_ctio(isp, ccb, FROM_SRR);
	return;
fail:
	inot->in_reserved = 1;
	isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK, inot);
	ccb->ccb_h.status &= ~CAM_STATUS_MASK;
	ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
	isp_complete_ctio(isp, ccb);
	return;
mdp:
	if (isp_notify_ack(isp, inot)) {
		isp_prt(isp, ISP_LOGWARN, "could not push positive ack for SRR- you lose");
		goto fail;
	}
	ccb->ccb_h.status &= ~CAM_STATUS_MASK;
	ccb->ccb_h.status |= CAM_MESSAGE_RECV;
	/*
	 * This is not a strict interpretation of MDP, but it's close
	 */
	ccb->csio.msg_ptr = &ccb->csio.sense_data.sense_buf[SSD_FULL_SIZE - 16];
	ccb->csio.msg_len = 7;
	ccb->csio.msg_ptr[0] = MSG_EXTENDED;
	ccb->csio.msg_ptr[1] = 5;
	ccb->csio.msg_ptr[2] = 0;	/* modify data pointer */
	ccb->csio.msg_ptr[3] = srr_off >> 24;
	ccb->csio.msg_ptr[4] = srr_off >> 16;
	ccb->csio.msg_ptr[5] = srr_off >> 8;
	ccb->csio.msg_ptr[6] = srr_off;
	isp_complete_ctio(isp, ccb);
}


static void
isp_handle_platform_srr(ispsoftc_t *isp, isp_notify_t *notify)
{
	in_fcentry_24xx_t *inot = notify->nt_lreserved;
	atio_private_data_t *atp;
	uint32_t tag = notify->nt_tagval & 0xffffffff;

	atp = isp_find_atpd(isp, notify->nt_channel, tag);
	if (atp == NULL) {
		isp_prt(isp, ISP_LOGERR, "%s: cannot find adjunct for %x in SRR Notify",
		    __func__, tag);
		isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK, inot);
		return;
	}
	atp->srr_notify_rcvd = 1;
	memcpy(atp->srr, inot, sizeof (atp->srr));
	isp_prt(isp, ISP_LOGTINFO, "SRR[0x%x] flags 0x%x srr_iu %x reloff 0x%x",
	    inot->in_rxid, inot->in_flags, inot->in_srr_iu,
	    ((uint32_t)inot->in_srr_reloff_hi << 16) | inot->in_srr_reloff_lo);
	if (atp->srr_ccb)
		isp_handle_srr_start(isp, atp);
}

static void
isp_handle_platform_ctio(ispsoftc_t *isp, ct7_entry_t *ct)
{
	union ccb *ccb;
	int sentstatus = 0, ok = 0, notify_cam = 0, failure = 0;
	atio_private_data_t *atp = NULL;
	int bus;
	uint32_t handle, data_requested, resid;

	handle = ct->ct_syshandle;
	ccb = isp_find_xs(isp, handle);
	if (ccb == NULL) {
		isp_print_bytes(isp, "null ccb in isp_handle_platform_ctio", QENTRY_LEN, ct);
		return;
	}
	isp_destroy_handle(isp, handle);
	resid = data_requested = PISP_PCMD(ccb)->datalen;
	isp_free_pcmd(isp, ccb);

	bus = XS_CHANNEL(ccb);
	atp = isp_find_atpd(isp, bus, ct->ct_rxid);
	if (atp == NULL) {
		/*
		 * XXX: isp_clear_commands() generates fake CTIO with zero
		 * ct_rxid value, filling only ct_syshandle.  Workaround
		 * that using tag_id from the CCB, pointed by ct_syshandle.
		 */
		atp = isp_find_atpd(isp, bus, ccb->csio.tag_id);
	}
	if (atp == NULL) {
		isp_prt(isp, ISP_LOGERR, "%s: cannot find adjunct for %x after I/O", __func__, ccb->csio.tag_id);
		return;
	}
	KASSERT((atp->ctcnt > 0), ("ctio count not greater than zero"));
	atp->bytes_in_transit -= data_requested;
	atp->ctcnt -= 1;
	ccb->ccb_h.status &= ~CAM_STATUS_MASK;

	if (ct->ct_nphdl == CT7_SRR) {
		atp->srr_ccb = ccb;
		if (atp->srr_notify_rcvd)
			isp_handle_srr_start(isp, atp);
		return;
	}
	if (ct->ct_nphdl == CT_HBA_RESET) {
		sentstatus = (ccb->ccb_h.flags & CAM_SEND_STATUS) &&
		    (atp->sendst == 0);
		failure = CAM_UNREC_HBA_ERROR;
	} else {
		sentstatus = ct->ct_flags & CT7_SENDSTATUS;
		ok = (ct->ct_nphdl == CT7_OK);
		notify_cam = (ct->ct_header.rqs_seqno & ATPD_SEQ_NOTIFY_CAM) != 0;
		if ((ct->ct_flags & CT7_DATAMASK) != CT7_NO_DATA)
			resid = ct->ct_resid;
	}
	isp_prt(isp, ok? ISP_LOGTDEBUG0 : ISP_LOGWARN, "%s: CTIO7[%x] seq %u nc %d sts 0x%x flg 0x%x sns %d resid %d %s", __func__, ct->ct_rxid, ATPD_GET_SEQNO(ct),
	   notify_cam, ct->ct_nphdl, ct->ct_flags, (ccb->ccb_h.status & CAM_SENT_SENSE) != 0, resid, sentstatus? "FIN" : "MID");
	if (ok) {
		if (data_requested > 0) {
			atp->bytes_xfered += data_requested - resid;
			ccb->csio.resid = ccb->csio.dxfer_len -
			    (data_requested - resid);
		}
		if (sentstatus && (ccb->ccb_h.flags & CAM_SEND_SENSE))
			ccb->ccb_h.status |= CAM_SENT_SENSE;
		ccb->ccb_h.status |= CAM_REQ_CMP;
	} else {
		notify_cam = 1;
		if (failure == CAM_UNREC_HBA_ERROR)
			ccb->ccb_h.status |= CAM_UNREC_HBA_ERROR;
		else
			ccb->ccb_h.status |= CAM_REQ_CMP_ERR;
	}
	atp->state = ATPD_STATE_PDON;

	/*
	 * We never *not* notify CAM when there has been any error (ok == 0),
	 * so we never need to do an ATIO putback if we're not notifying CAM.
	 */
	isp_prt(isp, ISP_LOGTDEBUG0, "%s CTIO[0x%x] done (ok=%d nc=%d nowsendstatus=%d ccb ss=%d)",
	    (sentstatus)? "  FINAL " : "MIDTERM ", atp->tag, ok, notify_cam, atp->sendst, (ccb->ccb_h.flags & CAM_SEND_STATUS) != 0);
	if (notify_cam == 0) {
		if (atp->sendst) {
			isp_target_start_ctio(isp, ccb, FROM_CTIO_DONE);
		}
		return;
	}

	/*
	 * We are done with this ATIO if we successfully sent status.
	 * In all other cases expect either another CTIO or XPT_ABORT.
	 */
	if (ok && sentstatus)
		isp_put_atpd(isp, bus, atp);

	/*
	 * We're telling CAM we're done with this CTIO transaction.
	 *
	 * 24XX cards never need an ATIO put back.
	 */
	isp_complete_ctio(isp, ccb);
}

static int
isp_handle_platform_target_notify_ack(ispsoftc_t *isp, isp_notify_t *mp, uint32_t rsp)
{
	ct7_entry_t local, *cto = &local;

	if (isp->isp_state != ISP_RUNSTATE) {
		isp_prt(isp, ISP_LOGTINFO, "Notify Code 0x%x (qevalid=%d) acked- h/w not ready (dropping)", mp->nt_ncode, mp->nt_lreserved != NULL);
		return (0);
	}

	/*
	 * This case is for a Task Management Function, which shows up as an ATIO7 entry.
	 */
	if (mp->nt_lreserved && ((isphdr_t *)mp->nt_lreserved)->rqs_entry_type == RQSTYPE_ATIO) {
		at7_entry_t *aep = (at7_entry_t *)mp->nt_lreserved;
		fcportdb_t *lp;
		uint32_t sid;
		uint16_t nphdl;

		sid = (aep->at_hdr.s_id[0] << 16) | (aep->at_hdr.s_id[1] << 8) | aep->at_hdr.s_id[2];
		if (isp_find_pdb_by_portid(isp, mp->nt_channel, sid, &lp)) {
			nphdl = lp->handle;
		} else {
			nphdl = NIL_HANDLE;
		}
		ISP_MEMZERO(cto, sizeof (ct7_entry_t));
		cto->ct_header.rqs_entry_type = RQSTYPE_CTIO7;
		cto->ct_header.rqs_entry_count = 1;
		cto->ct_nphdl = nphdl;
		cto->ct_rxid = aep->at_rxid;
		cto->ct_vpidx = mp->nt_channel;
		cto->ct_iid_lo = sid;
		cto->ct_iid_hi = sid >> 16;
		cto->ct_oxid = aep->at_hdr.ox_id;
		cto->ct_flags = CT7_SENDSTATUS|CT7_NOACK|CT7_NO_DATA|CT7_FLAG_MODE1;
		cto->ct_flags |= (aep->at_ta_len >> 12) << CT7_TASK_ATTR_SHIFT;
		if (rsp != 0) {
			cto->ct_scsi_status |= (FCP_RSPLEN_VALID << 8);
			cto->rsp.m1.ct_resplen = 4;
			ISP_MEMZERO(cto->rsp.m1.ct_resp, sizeof (cto->rsp.m1.ct_resp));
			cto->rsp.m1.ct_resp[0] = rsp & 0xff;
			cto->rsp.m1.ct_resp[1] = (rsp >> 8) & 0xff;
			cto->rsp.m1.ct_resp[2] = (rsp >> 16) & 0xff;
			cto->rsp.m1.ct_resp[3] = (rsp >> 24) & 0xff;
		}
		return (isp_send_entry(isp, cto));
	}

	/*
	 * This case is for a responding to an ABTS frame
	 */
	if (mp->nt_lreserved && ((isphdr_t *)mp->nt_lreserved)->rqs_entry_type == RQSTYPE_ABTS_RCVD) {

		/*
		 * Overload nt_need_ack here to mark whether we've terminated the associated command.
		 */
		if (mp->nt_need_ack) {
			abts_t *abts = (abts_t *)mp->nt_lreserved;

			ISP_MEMZERO(cto, sizeof (ct7_entry_t));
			isp_prt(isp, ISP_LOGTDEBUG0, "%s: [%x] terminating after ABTS received", __func__, abts->abts_rxid_task);
			cto->ct_header.rqs_entry_type = RQSTYPE_CTIO7;
			cto->ct_header.rqs_entry_count = 1;
			cto->ct_nphdl = mp->nt_nphdl;
			cto->ct_rxid = abts->abts_rxid_task;
			cto->ct_iid_lo = mp->nt_sid;
			cto->ct_iid_hi = mp->nt_sid >> 16;
			cto->ct_oxid = abts->abts_ox_id;
			cto->ct_vpidx = mp->nt_channel;
			cto->ct_flags = CT7_NOACK|CT7_TERMINATE;
			if (isp_send_entry(isp, cto)) {
				return (ENOMEM);
			}
			mp->nt_need_ack = 0;
		}
		return (isp_acknak_abts(isp, mp->nt_lreserved, 0));
	}

	/*
	 * General purpose acknowledgement
	 */
	if (mp->nt_need_ack) {
		isp_prt(isp, ISP_LOGTINFO, "Notify Code 0x%x (qevalid=%d) being acked", mp->nt_ncode, mp->nt_lreserved != NULL);
		/*
		 * Don't need to use the guaranteed send because the caller can retry
		 */
		return (isp_notify_ack(isp, mp->nt_lreserved));
	}
	return (0);
}

/*
 * Handle task management functions.
 *
 * We show up here with a notify structure filled out.
 *
 * The nt_lreserved tag points to the original queue entry
 */
static void
isp_handle_platform_target_tmf(ispsoftc_t *isp, isp_notify_t *notify)
{
	tstate_t *tptr;
	fcportdb_t *lp;
	struct ccb_immediate_notify *inot;
	inot_private_data_t *ntp = NULL;
	atio_private_data_t *atp;
	lun_id_t lun;

	isp_prt(isp, ISP_LOGTDEBUG0, "%s: code 0x%x sid  0x%x tagval 0x%016llx chan %d lun %jx", __func__, notify->nt_ncode,
	    notify->nt_sid, (unsigned long long) notify->nt_tagval, notify->nt_channel, notify->nt_lun);
	if (notify->nt_lun == LUN_ANY) {
		if (notify->nt_tagval == TAG_ANY) {
			lun = CAM_LUN_WILDCARD;
		} else {
			atp = isp_find_atpd(isp, notify->nt_channel,
			    notify->nt_tagval & 0xffffffff);
			lun = atp ? atp->lun : CAM_LUN_WILDCARD;
		}
	} else {
		lun = notify->nt_lun;
	}
	tptr = get_lun_statep(isp, notify->nt_channel, lun);
	if (tptr == NULL) {
		tptr = get_lun_statep(isp, notify->nt_channel, CAM_LUN_WILDCARD);
		if (tptr == NULL) {
			isp_prt(isp, ISP_LOGWARN, "%s: no state pointer found for chan %d lun %#jx", __func__, notify->nt_channel, (uintmax_t)lun);
			goto bad;
		}
	}
	inot = (struct ccb_immediate_notify *) SLIST_FIRST(&tptr->inots);
	if (inot == NULL) {
		isp_prt(isp, ISP_LOGWARN, "%s: out of immediate notify structures for chan %d lun %#jx", __func__, notify->nt_channel, (uintmax_t)lun);
		goto bad;
	}

	inot->ccb_h.target_id = ISP_MAX_TARGETS(isp);
	inot->ccb_h.target_lun = lun;
	if (isp_find_pdb_by_portid(isp, notify->nt_channel, notify->nt_sid, &lp) == 0 &&
	    isp_find_pdb_by_handle(isp, notify->nt_channel, notify->nt_nphdl, &lp) == 0) {
		inot->initiator_id = CAM_TARGET_WILDCARD;
	} else {
		inot->initiator_id = FC_PORTDB_TGT(isp, notify->nt_channel, lp);
	}
	inot->seq_id = notify->nt_tagval;
	inot->tag_id = notify->nt_tagval >> 32;

	switch (notify->nt_ncode) {
	case NT_ABORT_TASK:
		isp_target_mark_aborted_early(isp, notify->nt_channel, tptr, inot->tag_id);
		inot->arg = MSG_ABORT_TASK;
		break;
	case NT_ABORT_TASK_SET:
		isp_target_mark_aborted_early(isp, notify->nt_channel, tptr, TAG_ANY);
		inot->arg = MSG_ABORT_TASK_SET;
		break;
	case NT_CLEAR_ACA:
		inot->arg = MSG_CLEAR_ACA;
		break;
	case NT_CLEAR_TASK_SET:
		inot->arg = MSG_CLEAR_TASK_SET;
		break;
	case NT_LUN_RESET:
		inot->arg = MSG_LOGICAL_UNIT_RESET;
		break;
	case NT_TARGET_RESET:
		inot->arg = MSG_TARGET_RESET;
		break;
	case NT_QUERY_TASK_SET:
		inot->arg = MSG_QUERY_TASK_SET;
		break;
	case NT_QUERY_ASYNC_EVENT:
		inot->arg = MSG_QUERY_ASYNC_EVENT;
		break;
	default:
		isp_prt(isp, ISP_LOGWARN, "%s: unknown TMF code 0x%x for chan %d lun %#jx", __func__, notify->nt_ncode, notify->nt_channel, (uintmax_t)lun);
		goto bad;
	}

	ntp = isp_get_ntpd(isp, notify->nt_channel);
	if (ntp == NULL) {
		isp_prt(isp, ISP_LOGWARN, "%s: out of inotify private structures", __func__);
		goto bad;
	}
	ISP_MEMCPY(&ntp->nt, notify, sizeof (isp_notify_t));
	if (notify->nt_lreserved) {
		ISP_MEMCPY(&ntp->data, notify->nt_lreserved, QENTRY_LEN);
		ntp->nt.nt_lreserved = &ntp->data;
	}
	ntp->seq_id = notify->nt_tagval;
	ntp->tag_id = notify->nt_tagval >> 32;

	SLIST_REMOVE_HEAD(&tptr->inots, sim_links.sle);
	ISP_PATH_PRT(isp, ISP_LOGTDEBUG2, inot->ccb_h.path, "Take FREE INOT\n");
	inot->ccb_h.status = CAM_MESSAGE_RECV;
	xpt_done((union ccb *)inot);
	return;
bad:
	if (notify->nt_need_ack) {
		if (((isphdr_t *)notify->nt_lreserved)->rqs_entry_type == RQSTYPE_ABTS_RCVD) {
			if (isp_acknak_abts(isp, notify->nt_lreserved, ENOMEM)) {
				isp_prt(isp, ISP_LOGWARN, "you lose- unable to send an ACKNAK");
			}
		} else {
			isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK, notify->nt_lreserved);
		}
	}
}

static void
isp_target_mark_aborted_early(ispsoftc_t *isp, int chan, tstate_t *tptr, uint32_t tag_id)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	atio_private_data_t *atp;
	inot_private_data_t *ntp, *tmp;
	uint32_t this_tag_id;

	/*
	 * First, clean any commands pending restart
	 */
	STAILQ_FOREACH_SAFE(ntp, &tptr->restart_queue, next, tmp) {
		this_tag_id = ((at7_entry_t *)ntp->data)->at_rxid;
		if ((uint64_t)tag_id == TAG_ANY || tag_id == this_tag_id) {
			isp_endcmd(isp, ntp->data, NIL_HANDLE, chan,
			    ECMD_TERMINATE, 0);
			isp_put_ntpd(isp, chan, ntp);
			STAILQ_REMOVE(&tptr->restart_queue, ntp,
			    inot_private_data, next);
		}
	}

	/*
	 * Now mark other ones dead as well.
	 */
	for (atp = fc->atpool; atp < &fc->atpool[ATPDPSIZE]; atp++) {
		if (atp->lun != tptr->ts_lun)
			continue;
		if ((uint64_t)tag_id == TAG_ANY || atp->tag == tag_id)
			atp->dead = 1;
	}
}
#endif

static void
isp_poll(struct cam_sim *sim)
{
	ispsoftc_t *isp = cam_sim_softc(sim);

	ISP_RUN_ISR(isp);
}


static void
isp_watchdog(void *arg)
{
	struct ccb_scsiio *xs = arg;
	ispsoftc_t *isp;
	uint32_t ohandle = ISP_HANDLE_FREE, handle;

	isp = XS_ISP(xs);

	handle = isp_find_handle(isp, xs);

	/*
	 * Hand crank the interrupt code just to be sure the command isn't stuck somewhere.
	 */
	if (handle != ISP_HANDLE_FREE) {
		ISP_RUN_ISR(isp);
		ohandle = handle;
		handle = isp_find_handle(isp, xs);
	}
	if (handle != ISP_HANDLE_FREE) {
		/*
		 * Try and make sure the command is really dead before
		 * we release the handle (and DMA resources) for reuse.
		 *
		 * If we are successful in aborting the command then
		 * we're done here because we'll get the command returned
		 * back separately.
		 */
		if (isp_control(isp, ISPCTL_ABORT_CMD, xs) == 0) {
			return;
		}

		/*
		 * Note that after calling the above, the command may in
		 * fact have been completed.
		 */
		xs = isp_find_xs(isp, handle);

		/*
		 * If the command no longer exists, then we won't
		 * be able to find the xs again with this handle.
		 */
		if (xs == NULL) {
			return;
		}

		/*
		 * After this point, the command is really dead.
		 */
		ISP_DMAFREE(isp, xs);
		isp_destroy_handle(isp, handle);
		isp_prt(isp, ISP_LOGERR, "%s: timeout for handle 0x%x", __func__, handle);
		XS_SETERR(xs, CAM_CMD_TIMEOUT);
		isp_done(xs);
	} else {
		if (ohandle != ISP_HANDLE_FREE) {
			isp_prt(isp, ISP_LOGWARN, "%s: timeout for handle 0x%x, recovered during interrupt", __func__, ohandle);
		} else {
			isp_prt(isp, ISP_LOGWARN, "%s: timeout for handle already free", __func__);
		}
	}
}

static void
isp_make_here(ispsoftc_t *isp, fcportdb_t *fcp, int chan, int tgt)
{
	union ccb *ccb;
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	/*
	 * Allocate a CCB, create a wildcard path for this target and schedule a rescan.
	 */
	ccb = xpt_alloc_ccb_nowait();
	if (ccb == NULL) {
		isp_prt(isp, ISP_LOGWARN, "Chan %d unable to alloc CCB for rescan", chan);
		return;
	}
	if (xpt_create_path(&ccb->ccb_h.path, NULL, cam_sim_path(fc->sim),
	    tgt, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
		isp_prt(isp, ISP_LOGWARN, "unable to create path for rescan");
		xpt_free_ccb(ccb);
		return;
	}
	xpt_rescan(ccb);
}

static void
isp_make_gone(ispsoftc_t *isp, fcportdb_t *fcp, int chan, int tgt)
{
	struct cam_path *tp;
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	if (xpt_create_path(&tp, NULL, cam_sim_path(fc->sim), tgt, CAM_LUN_WILDCARD) == CAM_REQ_CMP) {
		xpt_async(AC_LOST_DEVICE, tp, NULL);
		xpt_free_path(tp);
	}
}

/*
 * Gone Device Timer Function- when we have decided that a device has gone
 * away, we wait a specific period of time prior to telling the OS it has
 * gone away.
 *
 * This timer function fires once a second and then scans the port database
 * for devices that are marked dead but still have a virtual target assigned.
 * We decrement a counter for that port database entry, and when it hits zero,
 * we tell the OS the device has gone away.
 */
static void
isp_gdt(void *arg)
{
	struct isp_fc *fc = arg;
	taskqueue_enqueue(taskqueue_thread, &fc->gtask);
}

static void
isp_gdt_task(void *arg, int pending)
{
	struct isp_fc *fc = arg;
	ispsoftc_t *isp = fc->isp;
	int chan = fc - ISP_FC_PC(isp, 0);
	fcportdb_t *lp;
	struct ac_contract ac;
	struct ac_device_changed *adc;
	int dbidx, more_to_do = 0;

	ISP_LOCK(isp);
	isp_prt(isp, ISP_LOGDEBUG0, "Chan %d GDT timer expired", chan);
	for (dbidx = 0; dbidx < MAX_FC_TARG; dbidx++) {
		lp = &FCPARAM(isp, chan)->portdb[dbidx];

		if (lp->state != FC_PORTDB_STATE_ZOMBIE) {
			continue;
		}
		if (lp->gone_timer != 0) {
			lp->gone_timer -= 1;
			more_to_do++;
			continue;
		}
		isp_prt(isp, ISP_LOGCONFIG, prom3, chan, dbidx, lp->portid, "Gone Device Timeout");
		if (lp->is_target) {
			lp->is_target = 0;
			isp_make_gone(isp, lp, chan, dbidx);
		}
		if (lp->is_initiator) {
			lp->is_initiator = 0;
			ac.contract_number = AC_CONTRACT_DEV_CHG;
			adc = (struct ac_device_changed *) ac.contract_data;
			adc->wwpn = lp->port_wwn;
			adc->port = lp->portid;
			adc->target = dbidx;
			adc->arrived = 0;
			xpt_async(AC_CONTRACT, fc->path, &ac);
		}
		lp->state = FC_PORTDB_STATE_NIL;
	}
	if (fc->ready) {
		if (more_to_do) {
			callout_reset(&fc->gdt, hz, isp_gdt, fc);
		} else {
			callout_deactivate(&fc->gdt);
			isp_prt(isp, ISP_LOG_SANCFG, "Chan %d Stopping Gone Device Timer @ %lu", chan, (unsigned long) time_uptime);
		}
	}
	ISP_UNLOCK(isp);
}

/*
 * When loop goes down we remember the time and freeze CAM command queue.
 * During some time period we are trying to reprobe the loop.  But if we
 * fail, we tell the OS that devices have gone away and drop the freeze.
 *
 * We don't clear the devices out of our port database because, when loop
 * come back up, we have to do some actual cleanup with the chip at that
 * point (implicit PLOGO, e.g., to get the chip's port database state right).
 */
static void
isp_loop_changed(ispsoftc_t *isp, int chan)
{
	fcparam *fcp = FCPARAM(isp, chan);
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	if (fc->loop_down_time)
		return;
	isp_prt(isp, ISP_LOG_SANCFG|ISP_LOGDEBUG0, "Chan %d Loop changed", chan);
	if (fcp->role & ISP_ROLE_INITIATOR)
		isp_freeze_loopdown(isp, chan);
	fc->loop_down_time = time_uptime;
	wakeup(fc);
}

static void
isp_loop_up(ispsoftc_t *isp, int chan)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	isp_prt(isp, ISP_LOG_SANCFG|ISP_LOGDEBUG0, "Chan %d Loop is up", chan);
	fc->loop_seen_once = 1;
	fc->loop_down_time = 0;
	isp_unfreeze_loopdown(isp, chan);
}

static void
isp_loop_dead(ispsoftc_t *isp, int chan)
{
	fcparam *fcp = FCPARAM(isp, chan);
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	fcportdb_t *lp;
	struct ac_contract ac;
	struct ac_device_changed *adc;
	int dbidx, i;

	isp_prt(isp, ISP_LOG_SANCFG|ISP_LOGDEBUG0, "Chan %d Loop is dead", chan);

	/*
	 * Notify to the OS all targets who we now consider have departed.
	 */
	for (dbidx = 0; dbidx < MAX_FC_TARG; dbidx++) {
		lp = &fcp->portdb[dbidx];

		if (lp->state == FC_PORTDB_STATE_NIL)
			continue;

		for (i = 0; i < ISP_HANDLE_NUM(isp); i++) {
			struct ccb_scsiio *xs;

			if (ISP_H2HT(isp->isp_xflist[i].handle) != ISP_HANDLE_INITIATOR) {
				continue;
			}
			if ((xs = isp->isp_xflist[i].cmd) == NULL) {
				continue;
                        }
			if (dbidx != XS_TGT(xs)) {
				continue;
			}
			isp_prt(isp, ISP_LOGWARN, "command handle 0x%x for %d.%d.%jx orphaned by loop down timeout",
			    isp->isp_xflist[i].handle, chan, XS_TGT(xs),
			    (uintmax_t)XS_LUN(xs));

			/*
			 * Just like in isp_watchdog, abort the outstanding
			 * command or immediately free its resources if it is
			 * not active
			 */
			if (isp_control(isp, ISPCTL_ABORT_CMD, xs) == 0) {
				continue;
			}

			ISP_DMAFREE(isp, xs);
			isp_destroy_handle(isp, isp->isp_xflist[i].handle);
			isp_prt(isp, ISP_LOGWARN, "command handle 0x%x for %d.%d.%jx could not be aborted and was destroyed",
			    isp->isp_xflist[i].handle, chan, XS_TGT(xs),
			    (uintmax_t)XS_LUN(xs));
			XS_SETERR(xs, HBA_BUSRESET);
			isp_done(xs);
		}

		isp_prt(isp, ISP_LOGCONFIG, prom3, chan, dbidx, lp->portid, "Loop Down Timeout");
		if (lp->is_target) {
			lp->is_target = 0;
			isp_make_gone(isp, lp, chan, dbidx);
		}
		if (lp->is_initiator) {
			lp->is_initiator = 0;
			ac.contract_number = AC_CONTRACT_DEV_CHG;
			adc = (struct ac_device_changed *) ac.contract_data;
			adc->wwpn = lp->port_wwn;
			adc->port = lp->portid;
			adc->target = dbidx;
			adc->arrived = 0;
			xpt_async(AC_CONTRACT, fc->path, &ac);
		}
	}

	isp_unfreeze_loopdown(isp, chan);
	fc->loop_down_time = 0;
}

static void
isp_kthread(void *arg)
{
	struct isp_fc *fc = arg;
	ispsoftc_t *isp = fc->isp;
	int chan = fc - ISP_FC_PC(isp, 0);
	int slp = 0, d;
	int lb, lim;

	ISP_LOCK(isp);
	while (isp->isp_osinfo.is_exiting == 0) {
		isp_prt(isp, ISP_LOG_SANCFG|ISP_LOGDEBUG0,
		    "Chan %d Checking FC state", chan);
		lb = isp_fc_runstate(isp, chan, 250000);
		isp_prt(isp, ISP_LOG_SANCFG|ISP_LOGDEBUG0,
		    "Chan %d FC got to %s state", chan,
		    isp_fc_loop_statename(lb));

		/*
		 * Our action is different based upon whether we're supporting
		 * Initiator mode or not. If we are, we might freeze the simq
		 * when loop is down and set all sorts of different delays to
		 * check again.
		 *
		 * If not, we simply just wait for loop to come up.
		 */
		if (lb == LOOP_READY || lb < 0) {
			slp = 0;
		} else {
			/*
			 * If we've never seen loop up and we've waited longer
			 * than quickboot time, or we've seen loop up but we've
			 * waited longer than loop_down_limit, give up and go
			 * to sleep until loop comes up.
			 */
			if (fc->loop_seen_once == 0)
				lim = isp_quickboot_time;
			else
				lim = fc->loop_down_limit;
			d = time_uptime - fc->loop_down_time;
			if (d >= lim)
				slp = 0;
			else if (d < 10)
				slp = 1;
			else if (d < 30)
				slp = 5;
			else if (d < 60)
				slp = 10;
			else if (d < 120)
				slp = 20;
			else
				slp = 30;
		}

		if (slp == 0) {
			if (lb == LOOP_READY)
				isp_loop_up(isp, chan);
			else
				isp_loop_dead(isp, chan);
		}

		isp_prt(isp, ISP_LOG_SANCFG|ISP_LOGDEBUG0,
		    "Chan %d sleep for %d seconds", chan, slp);
		msleep(fc, &isp->isp_lock, PRIBIO, "ispf", slp * hz);
	}
	fc->num_threads -= 1;
	wakeup(&fc->num_threads);
	ISP_UNLOCK(isp);
	kthread_exit();
}

#ifdef	ISP_TARGET_MODE
static void
isp_abort_atio(ispsoftc_t *isp, union ccb *ccb)
{
	atio_private_data_t *atp;
	union ccb *accb = ccb->cab.abort_ccb;
	struct ccb_hdr *sccb;
	tstate_t *tptr;

	tptr = get_lun_statep(isp, XS_CHANNEL(accb), XS_LUN(accb));
	if (tptr != NULL) {
		/* Search for the ATIO among queueued. */
		SLIST_FOREACH(sccb, &tptr->atios, sim_links.sle) {
			if (sccb != &accb->ccb_h)
				continue;
			SLIST_REMOVE(&tptr->atios, sccb, ccb_hdr, sim_links.sle);
			ISP_PATH_PRT(isp, ISP_LOGTDEBUG2, sccb->path,
			    "Abort FREE ATIO\n");
			accb->ccb_h.status = CAM_REQ_ABORTED;
			xpt_done(accb);
			ccb->ccb_h.status = CAM_REQ_CMP;
			return;
		}
	}

	/* Search for the ATIO among running. */
	atp = isp_find_atpd(isp, XS_CHANNEL(accb), accb->atio.tag_id);
	if (atp != NULL) {
		/* Send TERMINATE to firmware. */
		if (!atp->dead) {
			uint8_t storage[QENTRY_LEN];
			ct7_entry_t *cto = (ct7_entry_t *) storage;

			ISP_MEMZERO(cto, sizeof (ct7_entry_t));
			cto->ct_header.rqs_entry_type = RQSTYPE_CTIO7;
			cto->ct_header.rqs_entry_count = 1;
			cto->ct_nphdl = atp->nphdl;
			cto->ct_rxid = atp->tag;
			cto->ct_iid_lo = atp->sid;
			cto->ct_iid_hi = atp->sid >> 16;
			cto->ct_oxid = atp->oxid;
			cto->ct_vpidx = XS_CHANNEL(accb);
			cto->ct_flags = CT7_NOACK|CT7_TERMINATE;
			isp_send_entry(isp, cto);
		}
		isp_put_atpd(isp, XS_CHANNEL(accb), atp);
		ccb->ccb_h.status = CAM_REQ_CMP;
	} else {
		ccb->ccb_h.status = CAM_UA_ABORT;
	}
}

static void
isp_abort_inot(ispsoftc_t *isp, union ccb *ccb)
{
	inot_private_data_t *ntp;
	union ccb *accb = ccb->cab.abort_ccb;
	struct ccb_hdr *sccb;
	tstate_t *tptr;

	tptr = get_lun_statep(isp, XS_CHANNEL(accb), XS_LUN(accb));
	if (tptr != NULL) {
		/* Search for the INOT among queueued. */
		SLIST_FOREACH(sccb, &tptr->inots, sim_links.sle) {
			if (sccb != &accb->ccb_h)
				continue;
			SLIST_REMOVE(&tptr->inots, sccb, ccb_hdr, sim_links.sle);
			ISP_PATH_PRT(isp, ISP_LOGTDEBUG2, sccb->path,
			    "Abort FREE INOT\n");
			accb->ccb_h.status = CAM_REQ_ABORTED;
			xpt_done(accb);
			ccb->ccb_h.status = CAM_REQ_CMP;
			return;
		}
	}

	/* Search for the INOT among running. */
	ntp = isp_find_ntpd(isp, XS_CHANNEL(accb), accb->cin1.tag_id, accb->cin1.seq_id);
	if (ntp != NULL) {
		if (ntp->nt.nt_need_ack) {
			isp_async(isp, ISPASYNC_TARGET_NOTIFY_ACK,
			    ntp->nt.nt_lreserved);
		}
		isp_put_ntpd(isp, XS_CHANNEL(accb), ntp);
		ccb->ccb_h.status = CAM_REQ_CMP;
	} else {
		ccb->ccb_h.status = CAM_UA_ABORT;
		return;
	}
}
#endif

static void
isp_action(struct cam_sim *sim, union ccb *ccb)
{
	int bus, tgt, error;
	ispsoftc_t *isp;
	fcparam *fcp;
	struct ccb_trans_settings *cts;
	sbintime_t ts;

	CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE, ("isp_action\n"));

	isp = (ispsoftc_t *)cam_sim_softc(sim);
	ISP_ASSERT_LOCKED(isp);
	bus = cam_sim_bus(sim);
	isp_prt(isp, ISP_LOGDEBUG2, "isp_action code %x", ccb->ccb_h.func_code);
	ISP_PCMD(ccb) = NULL;

	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;
				isp_done((struct ccb_scsiio *) ccb);
				break;
			}
		}
#ifdef	DIAGNOSTIC
		if (ccb->ccb_h.target_id >= ISP_MAX_TARGETS(isp)) {
			xpt_print(ccb->ccb_h.path, "invalid target\n");
			ccb->ccb_h.status = CAM_PATH_INVALID;
		}
		if (ccb->ccb_h.status == CAM_PATH_INVALID) {
			xpt_done(ccb);
			break;
		}
#endif
		ccb->csio.scsi_status = SCSI_STATUS_OK;
		if (isp_get_pcmd(isp, ccb)) {
			isp_prt(isp, ISP_LOGWARN, "out of PCMDs");
			cam_freeze_devq(ccb->ccb_h.path);
			cam_release_devq(ccb->ccb_h.path, RELSIM_RELEASE_AFTER_TIMEOUT, 0, 250, 0);
			ccb->ccb_h.status = CAM_REQUEUE_REQ;
			xpt_done(ccb);
			break;
		}
		error = isp_start((XS_T *) ccb);
		isp_rq_check_above(isp);
		switch (error) {
		case 0:
			ccb->ccb_h.status |= CAM_SIM_QUEUED;
			if (ccb->ccb_h.timeout == CAM_TIME_INFINITY)
				break;
			/* Give firmware extra 10s to handle timeout. */
			ts = SBT_1MS * ccb->ccb_h.timeout + 10 * SBT_1S;
			callout_reset_sbt(&PISP_PCMD(ccb)->wdog, ts, 0,
			    isp_watchdog, ccb, 0);
			break;
		case CMD_RQLATER:
			isp_prt(isp, ISP_LOGDEBUG0, "%d.%jx retry later",
			    XS_TGT(ccb), (uintmax_t)XS_LUN(ccb));
			cam_freeze_devq(ccb->ccb_h.path);
			cam_release_devq(ccb->ccb_h.path, RELSIM_RELEASE_AFTER_TIMEOUT, 0, 1000, 0);
			ccb->ccb_h.status = CAM_REQUEUE_REQ;
			isp_free_pcmd(isp, ccb);
			xpt_done(ccb);
			break;
		case CMD_EAGAIN:
			isp_free_pcmd(isp, ccb);
			cam_freeze_devq(ccb->ccb_h.path);
			cam_release_devq(ccb->ccb_h.path, RELSIM_RELEASE_AFTER_TIMEOUT, 0, 10, 0);
			ccb->ccb_h.status = CAM_REQUEUE_REQ;
			xpt_done(ccb);
			break;
		case CMD_COMPLETE:
			isp_done((struct ccb_scsiio *) ccb);
			break;
		default:
			isp_prt(isp, ISP_LOGERR, "What's this? 0x%x at %d in file %s", error, __LINE__, __FILE__);
			ccb->ccb_h.status = CAM_REQUEUE_REQ;
			isp_free_pcmd(isp, ccb);
			xpt_done(ccb);
		}
		break;

#ifdef	ISP_TARGET_MODE
	case XPT_EN_LUN:		/* Enable/Disable LUN as a target */
		if (ccb->cel.enable) {
			isp_enable_lun(isp, ccb);
		} else {
			isp_disable_lun(isp, ccb);
		}
		break;
	case XPT_IMMEDIATE_NOTIFY:	/* Add Immediate Notify Resource */
	case XPT_ACCEPT_TARGET_IO:	/* Add Accept Target IO Resource */
	{
		tstate_t *tptr = get_lun_statep(isp, XS_CHANNEL(ccb), ccb->ccb_h.target_lun);
		if (tptr == NULL) {
			const char *str;

			if (ccb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
				str = "XPT_IMMEDIATE_NOTIFY";
			else
				str = "XPT_ACCEPT_TARGET_IO";
			ISP_PATH_PRT(isp, ISP_LOGWARN, ccb->ccb_h.path,
			    "%s: no state pointer found for %s\n",
			    __func__, str);
			ccb->ccb_h.status = CAM_DEV_NOT_THERE;
			xpt_done(ccb);
			break;
		}

		if (ccb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO) {
			ccb->atio.tag_id = 0;
			SLIST_INSERT_HEAD(&tptr->atios, &ccb->ccb_h, sim_links.sle);
			ISP_PATH_PRT(isp, ISP_LOGTDEBUG2, ccb->ccb_h.path,
			    "Put FREE ATIO\n");
		} else if (ccb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY) {
			ccb->cin1.seq_id = ccb->cin1.tag_id = 0;
			SLIST_INSERT_HEAD(&tptr->inots, &ccb->ccb_h, sim_links.sle);
			ISP_PATH_PRT(isp, ISP_LOGTDEBUG2, ccb->ccb_h.path,
			    "Put FREE INOT\n");
		}
		ccb->ccb_h.status = CAM_REQ_INPROG;
		break;
	}
	case XPT_NOTIFY_ACKNOWLEDGE:		/* notify ack */
	{
		inot_private_data_t *ntp;

		/*
		 * XXX: Because we cannot guarantee that the path information in the notify acknowledge ccb
		 * XXX: matches that for the immediate notify, we have to *search* for the notify structure
		 */
		/*
		 * All the relevant path information is in the associated immediate notify
		 */
		ISP_PATH_PRT(isp, ISP_LOGTDEBUG0, ccb->ccb_h.path, "%s: [0x%x] NOTIFY ACKNOWLEDGE for 0x%x seen\n", __func__, ccb->cna2.tag_id, ccb->cna2.seq_id);
		ntp = isp_find_ntpd(isp, XS_CHANNEL(ccb), ccb->cna2.tag_id, ccb->cna2.seq_id);
		if (ntp == NULL) {
			ISP_PATH_PRT(isp, ISP_LOGWARN, ccb->ccb_h.path, "%s: [0x%x] XPT_NOTIFY_ACKNOWLEDGE of 0x%x cannot find ntp private data\n", __func__,
			     ccb->cna2.tag_id, ccb->cna2.seq_id);
			ccb->ccb_h.status = CAM_DEV_NOT_THERE;
			xpt_done(ccb);
			break;
		}
		if (isp_handle_platform_target_notify_ack(isp, &ntp->nt,
		    (ccb->ccb_h.flags & CAM_SEND_STATUS) ? ccb->cna2.arg : 0)) {
			cam_freeze_devq(ccb->ccb_h.path);
			cam_release_devq(ccb->ccb_h.path, RELSIM_RELEASE_AFTER_TIMEOUT, 0, 10, 0);
			ccb->ccb_h.status &= ~CAM_STATUS_MASK;
			ccb->ccb_h.status |= CAM_REQUEUE_REQ;
			break;
		}
		isp_put_ntpd(isp, XS_CHANNEL(ccb), ntp);
		ccb->ccb_h.status = CAM_REQ_CMP;
		ISP_PATH_PRT(isp, ISP_LOGTDEBUG0, ccb->ccb_h.path, "%s: [0x%x] calling xpt_done for tag 0x%x\n", __func__, ccb->cna2.tag_id, ccb->cna2.seq_id);
		xpt_done(ccb);
		break;
	}
	case XPT_CONT_TARGET_IO:
		isp_target_start_ctio(isp, ccb, FROM_CAM);
		isp_rq_check_above(isp);
		break;
#endif
	case XPT_RESET_DEV:		/* BDR the specified SCSI device */
		tgt = ccb->ccb_h.target_id;
		tgt |= (bus << 16);

		error = isp_control(isp, ISPCTL_RESET_DEV, bus, tgt);
		if (error) {
			ccb->ccb_h.status = CAM_REQ_CMP_ERR;
		} else {
			/*
			 * If we have a FC device, reset the Command
			 * Reference Number, because the target will expect
			 * that we re-start the CRN at 1 after a reset.
			 */
			isp_fcp_reset_crn(isp, bus, tgt, /*tgt_set*/ 1);

			ccb->ccb_h.status = CAM_REQ_CMP;
		}
		xpt_done(ccb);
		break;
	case XPT_ABORT:			/* Abort the specified CCB */
	{
		union ccb *accb = ccb->cab.abort_ccb;
		switch (accb->ccb_h.func_code) {
#ifdef	ISP_TARGET_MODE
		case XPT_ACCEPT_TARGET_IO:
			isp_abort_atio(isp, ccb);
			break;
		case XPT_IMMEDIATE_NOTIFY:
			isp_abort_inot(isp, ccb);
			break;
#endif
		case XPT_SCSI_IO:
			error = isp_control(isp, ISPCTL_ABORT_CMD, accb);
			if (error) {
				ccb->ccb_h.status = CAM_UA_ABORT;
			} else {
				ccb->ccb_h.status = CAM_REQ_CMP;
			}
			break;
		default:
			ccb->ccb_h.status = CAM_REQ_INVALID;
			break;
		}
		/*
		 * This is not a queued CCB, so the caller expects it to be
		 * complete when control is returned.
		 */
		break;
	}
#define	IS_CURRENT_SETTINGS(c)	(c->type == CTS_TYPE_CURRENT_SETTINGS)
	case XPT_SET_TRAN_SETTINGS:	/* Nexus Settings */
		cts = &ccb->cts;
		if (!IS_CURRENT_SETTINGS(cts)) {
			ccb->ccb_h.status = CAM_REQ_INVALID;
			xpt_done(ccb);
			break;
		}
		ccb->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;
	case XPT_GET_TRAN_SETTINGS:
	{
		struct ccb_trans_settings_scsi *scsi;
		struct ccb_trans_settings_fc *fc;

		cts = &ccb->cts;
		scsi = &cts->proto_specific.scsi;
		fc = &cts->xport_specific.fc;
		tgt = cts->ccb_h.target_id;
		fcp = FCPARAM(isp, bus);

		cts->protocol = PROTO_SCSI;
		cts->protocol_version = SCSI_REV_2;
		cts->transport = XPORT_FC;
		cts->transport_version = 0;

		scsi->valid = CTS_SCSI_VALID_TQ;
		scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
		fc->valid = CTS_FC_VALID_SPEED;
		fc->bitrate = fcp->isp_gbspeed * 100000;
		if (tgt < MAX_FC_TARG) {
			fcportdb_t *lp = &fcp->portdb[tgt];
			fc->wwnn = lp->node_wwn;
			fc->wwpn = lp->port_wwn;
			fc->port = lp->portid;
			fc->valid |= CTS_FC_VALID_WWNN | CTS_FC_VALID_WWPN | CTS_FC_VALID_PORT;
		}
		ccb->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;
	}
	case XPT_CALC_GEOMETRY:
		cam_calc_geometry(&ccb->ccg, 1);
		xpt_done(ccb);
		break;

	case XPT_RESET_BUS:		/* Reset the specified bus */
		error = isp_control(isp, ISPCTL_RESET_BUS, bus);
		if (error) {
			ccb->ccb_h.status = CAM_REQ_CMP_ERR;
			xpt_done(ccb);
			break;
		}
		if (bootverbose) {
			xpt_print(ccb->ccb_h.path, "reset bus on channel %d\n", bus);
		}
		xpt_async(AC_BUS_RESET, ISP_FC_PC(isp, bus)->path, 0);
		ccb->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;

	case XPT_TERM_IO:		/* Terminate the I/O process */
		ccb->ccb_h.status = CAM_REQ_INVALID;
		xpt_done(ccb);
		break;

	case XPT_SET_SIM_KNOB:		/* Set SIM knobs */
	{
		struct ccb_sim_knob *kp = &ccb->knob;
		fcparam *fcp = FCPARAM(isp, bus);

		if (kp->xport_specific.fc.valid & KNOB_VALID_ADDRESS) {
			fcp->isp_wwnn = ISP_FC_PC(isp, bus)->def_wwnn = kp->xport_specific.fc.wwnn;
			fcp->isp_wwpn = ISP_FC_PC(isp, bus)->def_wwpn = kp->xport_specific.fc.wwpn;
			isp_prt(isp, ISP_LOGALL, "Setting Channel %d wwns to 0x%jx 0x%jx", bus, fcp->isp_wwnn, fcp->isp_wwpn);
		}
		ccb->ccb_h.status = CAM_REQ_CMP;
		if (kp->xport_specific.fc.valid & KNOB_VALID_ROLE) {
			int rchange = 0;
			int newrole = 0;

			switch (kp->xport_specific.fc.role) {
			case KNOB_ROLE_NONE:
				if (fcp->role != ISP_ROLE_NONE) {
					rchange = 1;
					newrole = ISP_ROLE_NONE;
				}
				break;
			case KNOB_ROLE_TARGET:
				if (fcp->role != ISP_ROLE_TARGET) {
					rchange = 1;
					newrole = ISP_ROLE_TARGET;
				}
				break;
			case KNOB_ROLE_INITIATOR:
				if (fcp->role != ISP_ROLE_INITIATOR) {
					rchange = 1;
					newrole = ISP_ROLE_INITIATOR;
				}
				break;
			case KNOB_ROLE_BOTH:
				if (fcp->role != ISP_ROLE_BOTH) {
					rchange = 1;
					newrole = ISP_ROLE_BOTH;
				}
				break;
			}
			if (rchange) {
				ISP_PATH_PRT(isp, ISP_LOGCONFIG, ccb->ccb_h.path, "changing role on from %d to %d\n", fcp->role, newrole);
				if (isp_control(isp, ISPCTL_CHANGE_ROLE,
				    bus, newrole) != 0) {
					ccb->ccb_h.status = CAM_REQ_CMP_ERR;
					xpt_done(ccb);
					break;
				}
			}
		}
		xpt_done(ccb);
		break;
	}
	case XPT_GET_SIM_KNOB_OLD:	/* Get SIM knobs -- compat value */
	case XPT_GET_SIM_KNOB:		/* Get SIM knobs */
	{
		struct ccb_sim_knob *kp = &ccb->knob;
		fcparam *fcp = FCPARAM(isp, bus);

		kp->xport_specific.fc.wwnn = fcp->isp_wwnn;
		kp->xport_specific.fc.wwpn = fcp->isp_wwpn;
		switch (fcp->role) {
		case ISP_ROLE_NONE:
			kp->xport_specific.fc.role = KNOB_ROLE_NONE;
			break;
		case ISP_ROLE_TARGET:
			kp->xport_specific.fc.role = KNOB_ROLE_TARGET;
			break;
		case ISP_ROLE_INITIATOR:
			kp->xport_specific.fc.role = KNOB_ROLE_INITIATOR;
			break;
		case ISP_ROLE_BOTH:
			kp->xport_specific.fc.role = KNOB_ROLE_BOTH;
			break;
		}
		kp->xport_specific.fc.valid = KNOB_VALID_ADDRESS | KNOB_VALID_ROLE;
		ccb->ccb_h.status = CAM_REQ_CMP;
		xpt_done(ccb);
		break;
	}
	case XPT_PATH_INQ:		/* Path routing inquiry */
	{
		struct ccb_pathinq *cpi = &ccb->cpi;

		cpi->version_num = 1;
#ifdef	ISP_TARGET_MODE
		cpi->target_sprt = PIT_PROCESSOR | PIT_DISCONNECT | PIT_TERM_IO;
#else
		cpi->target_sprt = 0;
#endif
		cpi->hba_eng_cnt = 0;
		cpi->max_target = ISP_MAX_TARGETS(isp) - 1;
		cpi->max_lun = 255;
		cpi->bus_id = cam_sim_bus(sim);
		cpi->maxio = (ISP_NSEG64_MAX - 1) * PAGE_SIZE;

		fcp = FCPARAM(isp, bus);

		cpi->hba_misc = PIM_NOBUSRESET | PIM_UNMAPPED;
		cpi->hba_misc |= PIM_EXTLUNS | PIM_NOSCAN;

		/*
		 * Because our loop ID can shift from time to time,
		 * make our initiator ID out of range of our bus.
		 */
		cpi->initiator_id = cpi->max_target + 1;

		/*
		 * Set base transfer capabilities for Fibre Channel, for this HBA.
		 */
		if (IS_25XX(isp))
			cpi->base_transfer_speed = 8000000;
		else
			cpi->base_transfer_speed = 4000000;
		cpi->hba_inquiry = PI_TAG_ABLE;
		cpi->transport = XPORT_FC;
		cpi->transport_version = 0;
		cpi->xport_specific.fc.wwnn = fcp->isp_wwnn;
		cpi->xport_specific.fc.wwpn = fcp->isp_wwpn;
		cpi->xport_specific.fc.port = fcp->isp_portid;
		cpi->xport_specific.fc.bitrate = fcp->isp_gbspeed * 1000;
		cpi->protocol = PROTO_SCSI;
		cpi->protocol_version = SCSI_REV_2;
		strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
		strlcpy(cpi->hba_vid, "Qlogic", HBA_IDLEN);
		strlcpy(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;
	}
}

void
isp_done(XS_T *sccb)
{
	ispsoftc_t *isp = XS_ISP(sccb);
	uint32_t status;

	if (XS_NOERR(sccb))
		XS_SETERR(sccb, CAM_REQ_CMP);

	if ((sccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP && (sccb->scsi_status != SCSI_STATUS_OK)) {
		sccb->ccb_h.status &= ~CAM_STATUS_MASK;
		if ((sccb->scsi_status == SCSI_STATUS_CHECK_COND) && (sccb->ccb_h.status & CAM_AUTOSNS_VALID) == 0) {
			sccb->ccb_h.status |= CAM_AUTOSENSE_FAIL;
		} else {
			sccb->ccb_h.status |= CAM_SCSI_STATUS_ERROR;
		}
	}

	sccb->ccb_h.status &= ~CAM_SIM_QUEUED;
	status = sccb->ccb_h.status & CAM_STATUS_MASK;
	if (status != CAM_REQ_CMP &&
	    (sccb->ccb_h.status & CAM_DEV_QFRZN) == 0) {
		sccb->ccb_h.status |= CAM_DEV_QFRZN;
		xpt_freeze_devq(sccb->ccb_h.path, 1);
	}

	if (ISP_PCMD(sccb)) {
		if (callout_active(&PISP_PCMD(sccb)->wdog))
			callout_stop(&PISP_PCMD(sccb)->wdog);
		isp_free_pcmd(isp, (union ccb *) sccb);
	}
	isp_rq_check_below(isp);
	xpt_done((union ccb *) sccb);
}

void
isp_async(ispsoftc_t *isp, ispasync_t cmd, ...)
{
	int bus;
	static const char prom[] = "Chan %d [%d] WWPN 0x%16jx PortID 0x%06x handle 0x%x %s %s";
	char buf[64];
	char *msg = NULL;
	target_id_t tgt = 0;
	fcportdb_t *lp;
	struct isp_fc *fc;
	struct ac_contract ac;
	struct ac_device_changed *adc;
	va_list ap;

	switch (cmd) {
	case ISPASYNC_LOOP_RESET:
	{
		uint16_t lipp;
		fcparam *fcp;
		va_start(ap, cmd);
		bus = va_arg(ap, int);
		va_end(ap);

		lipp = ISP_READ(isp, OUTMAILBOX1);
		fcp = FCPARAM(isp, bus);

		isp_prt(isp, ISP_LOGINFO, "Chan %d LOOP Reset, LIP primitive %x", bus, lipp);
		/*
		 * Per FCP-4, a Reset LIP should result in a CRN reset. Other
		 * LIPs and loop up/down events should never reset the CRN. For
		 * an as of yet unknown reason, 24xx series cards (and
		 * potentially others) can interrupt with a LIP Reset status
		 * when no LIP reset came down the wire. Additionally, the LIP
		 * primitive accompanying this status would not be a valid LIP
		 * Reset primitive, but some variation of an invalid AL_PA
		 * LIP. As a result, we have to verify the AL_PD in the LIP
		 * addresses our port before blindly resetting.
		*/
		if (FCP_IS_DEST_ALPD(fcp, (lipp & 0x00FF)))
			isp_fcp_reset_crn(isp, bus, /*tgt*/0, /*tgt_set*/ 0);
		isp_loop_changed(isp, bus);
		break;
	}
	case ISPASYNC_LIP:
		if (msg == NULL)
			msg = "LIP Received";
		/* FALLTHROUGH */
	case ISPASYNC_LOOP_DOWN:
		if (msg == NULL)
			msg = "LOOP Down";
		/* FALLTHROUGH */
	case ISPASYNC_LOOP_UP:
		if (msg == NULL)
			msg = "LOOP Up";
		va_start(ap, cmd);
		bus = va_arg(ap, int);
		va_end(ap);
		isp_loop_changed(isp, bus);
		isp_prt(isp, ISP_LOGINFO, "Chan %d %s", bus, msg);
		break;
	case ISPASYNC_DEV_ARRIVED:
		va_start(ap, cmd);
		bus = va_arg(ap, int);
		lp = va_arg(ap, fcportdb_t *);
		va_end(ap);
		fc = ISP_FC_PC(isp, bus);
		tgt = FC_PORTDB_TGT(isp, bus, lp);
		isp_gen_role_str(buf, sizeof (buf), lp->prli_word3);
		isp_prt(isp, ISP_LOGCONFIG, prom, bus, tgt, lp->port_wwn, lp->portid, lp->handle, buf, "arrived");
		if ((FCPARAM(isp, bus)->role & ISP_ROLE_INITIATOR) &&
		    (lp->prli_word3 & PRLI_WD3_TARGET_FUNCTION)) {
			lp->is_target = 1;
			isp_fcp_reset_crn(isp, bus, tgt, /*tgt_set*/ 1);
			isp_make_here(isp, lp, bus, tgt);
		}
		if ((FCPARAM(isp, bus)->role & ISP_ROLE_TARGET) &&
		    (lp->prli_word3 & PRLI_WD3_INITIATOR_FUNCTION)) {
			lp->is_initiator = 1;
			ac.contract_number = AC_CONTRACT_DEV_CHG;
			adc = (struct ac_device_changed *) ac.contract_data;
			adc->wwpn = lp->port_wwn;
			adc->port = lp->portid;
			adc->target = tgt;
			adc->arrived = 1;
			xpt_async(AC_CONTRACT, fc->path, &ac);
		}
		break;
	case ISPASYNC_DEV_CHANGED:
	case ISPASYNC_DEV_STAYED:
	{
		int crn_reset_done;

		crn_reset_done = 0;
		va_start(ap, cmd);
		bus = va_arg(ap, int);
		lp = va_arg(ap, fcportdb_t *);
		va_end(ap);
		fc = ISP_FC_PC(isp, bus);
		tgt = FC_PORTDB_TGT(isp, bus, lp);
		isp_gen_role_str(buf, sizeof (buf), lp->new_prli_word3);
		if (cmd == ISPASYNC_DEV_CHANGED)
			isp_prt(isp, ISP_LOGCONFIG, prom, bus, tgt, lp->port_wwn, lp->new_portid, lp->handle, buf, "changed");
		else
			isp_prt(isp, ISP_LOGCONFIG, prom, bus, tgt, lp->port_wwn, lp->portid, lp->handle, buf, "stayed");

		if (lp->is_target !=
		    ((FCPARAM(isp, bus)->role & ISP_ROLE_INITIATOR) &&
		     (lp->new_prli_word3 & PRLI_WD3_TARGET_FUNCTION))) {
			lp->is_target = !lp->is_target;
			if (lp->is_target) {
				if (cmd == ISPASYNC_DEV_CHANGED) {
					isp_fcp_reset_crn(isp, bus, tgt, /*tgt_set*/ 1);
					crn_reset_done = 1;
				}
				isp_make_here(isp, lp, bus, tgt);
			} else {
				isp_make_gone(isp, lp, bus, tgt);
				if (cmd == ISPASYNC_DEV_CHANGED) {
					isp_fcp_reset_crn(isp, bus, tgt, /*tgt_set*/ 1);
					crn_reset_done = 1;
				}
			}
		}
		if (lp->is_initiator !=
		    ((FCPARAM(isp, bus)->role & ISP_ROLE_TARGET) &&
		     (lp->new_prli_word3 & PRLI_WD3_INITIATOR_FUNCTION))) {
			lp->is_initiator = !lp->is_initiator;
			ac.contract_number = AC_CONTRACT_DEV_CHG;
			adc = (struct ac_device_changed *) ac.contract_data;
			adc->wwpn = lp->port_wwn;
			adc->port = lp->portid;
			adc->target = tgt;
			adc->arrived = lp->is_initiator;
			xpt_async(AC_CONTRACT, fc->path, &ac);
		}

		if ((cmd == ISPASYNC_DEV_CHANGED) &&
		    (crn_reset_done == 0))
			isp_fcp_reset_crn(isp, bus, tgt, /*tgt_set*/ 1);

		break;
	}
	case ISPASYNC_DEV_GONE:
		va_start(ap, cmd);
		bus = va_arg(ap, int);
		lp = va_arg(ap, fcportdb_t *);
		va_end(ap);
		fc = ISP_FC_PC(isp, bus);
		tgt = FC_PORTDB_TGT(isp, bus, lp);
		/*
		 * If this has a virtual target or initiator set the isp_gdt
		 * timer running on it to delay its departure.
		 */
		isp_gen_role_str(buf, sizeof (buf), lp->prli_word3);
		if (lp->is_target || lp->is_initiator) {
			lp->state = FC_PORTDB_STATE_ZOMBIE;
			lp->gone_timer = fc->gone_device_time;
			isp_prt(isp, ISP_LOGCONFIG, prom, bus, tgt, lp->port_wwn, lp->portid, lp->handle, buf, "gone zombie");
			if (fc->ready && !callout_active(&fc->gdt)) {
				isp_prt(isp, ISP_LOG_SANCFG|ISP_LOGDEBUG0, "Chan %d Starting Gone Device Timer with %u seconds time now %lu", bus, lp->gone_timer, (unsigned long)time_uptime);
				callout_reset(&fc->gdt, hz, isp_gdt, fc);
			}
			break;
		}
		isp_prt(isp, ISP_LOGCONFIG, prom, bus, tgt, lp->port_wwn, lp->portid, lp->handle, buf, "gone");
		break;
	case ISPASYNC_CHANGE_NOTIFY:
	{
		char *msg;
		int evt, nphdl, nlstate, portid, reason;

		va_start(ap, cmd);
		bus = va_arg(ap, int);
		evt = va_arg(ap, int);
		if (evt == ISPASYNC_CHANGE_PDB) {
			nphdl = va_arg(ap, int);
			nlstate = va_arg(ap, int);
			reason = va_arg(ap, int);
		} else if (evt == ISPASYNC_CHANGE_SNS) {
			portid = va_arg(ap, int);
		} else {
			nphdl = NIL_HANDLE;
			nlstate = reason = 0;
		}
		va_end(ap);

		if (evt == ISPASYNC_CHANGE_PDB) {
			int tgt_set = 0;
			msg = "Port Database Changed";
			isp_prt(isp, ISP_LOGINFO,
			    "Chan %d %s (nphdl 0x%x state 0x%x reason 0x%x)",
			    bus, msg, nphdl, nlstate, reason);
			/*
			 * Port database syncs are not sufficient for
			 * determining that logins or logouts are done on the
			 * loop, but this information is directly available from
			 * the reason code from the incoming mbox. We must reset
			 * the fcp crn on these events according to FCP-4
			 */
			switch (reason) {
			case PDB24XX_AE_IMPL_LOGO_1:
			case PDB24XX_AE_IMPL_LOGO_2:
			case PDB24XX_AE_IMPL_LOGO_3:
			case PDB24XX_AE_PLOGI_RCVD:
			case PDB24XX_AE_PRLI_RCVD:
			case PDB24XX_AE_PRLO_RCVD:
			case PDB24XX_AE_LOGO_RCVD:
			case PDB24XX_AE_PLOGI_DONE:
			case PDB24XX_AE_PRLI_DONE:
				/*
				 * If the event is not global, twiddle tgt and
				 * tgt_set to nominate only the target
				 * associated with the nphdl.
				 */
				if (nphdl != PDB24XX_AE_GLOBAL) {
					/* Break if we don't yet have the pdb */
					if (!isp_find_pdb_by_handle(isp, bus, nphdl, &lp))
						break;
					tgt = FC_PORTDB_TGT(isp, bus, lp);
					tgt_set = 1;
				}
				isp_fcp_reset_crn(isp, bus, tgt, tgt_set);
				break;
			default:
				break; /* NOP */
			}
		} else if (evt == ISPASYNC_CHANGE_SNS) {
			msg = "Name Server Database Changed";
			isp_prt(isp, ISP_LOGINFO, "Chan %d %s (PortID 0x%06x)",
			    bus, msg, portid);
		} else {
			msg = "Other Change Notify";
			isp_prt(isp, ISP_LOGINFO, "Chan %d %s", bus, msg);
		}
		isp_loop_changed(isp, bus);
		break;
	}
#ifdef	ISP_TARGET_MODE
	case ISPASYNC_TARGET_NOTIFY:
	{
		isp_notify_t *notify;
		va_start(ap, cmd);
		notify = va_arg(ap, isp_notify_t *);
		va_end(ap);
		switch (notify->nt_ncode) {
		case NT_ABORT_TASK:
		case NT_ABORT_TASK_SET:
		case NT_CLEAR_ACA:
		case NT_CLEAR_TASK_SET:
		case NT_LUN_RESET:
		case NT_TARGET_RESET:
		case NT_QUERY_TASK_SET:
		case NT_QUERY_ASYNC_EVENT:
			/*
			 * These are task management functions.
			 */
			isp_handle_platform_target_tmf(isp, notify);
			break;
		case NT_LIP_RESET:
		case NT_LINK_UP:
		case NT_LINK_DOWN:
		case NT_HBA_RESET:
			/*
			 * No action need be taken here.
			 */
			break;
		case NT_SRR:
			isp_handle_platform_srr(isp, notify);
			break;
		default:
			isp_prt(isp, ISP_LOGALL, "target notify code 0x%x", notify->nt_ncode);
			isp_handle_platform_target_notify_ack(isp, notify, 0);
			break;
		}
		break;
	}
	case ISPASYNC_TARGET_NOTIFY_ACK:
	{
		void *inot;
		va_start(ap, cmd);
		inot = va_arg(ap, void *);
		va_end(ap);
		if (isp_notify_ack(isp, inot)) {
			isp_tna_t *tp = malloc(sizeof (*tp), M_DEVBUF, M_NOWAIT);
			if (tp) {
				tp->isp = isp;
				memcpy(tp->data, inot, sizeof (tp->data));
				tp->not = tp->data;
				callout_init_mtx(&tp->timer, &isp->isp_lock, 0);
				callout_reset(&tp->timer, 5,
				    isp_refire_notify_ack, tp);
			} else {
				isp_prt(isp, ISP_LOGERR, "you lose- cannot allocate a notify refire");
			}
		}
		break;
	}
	case ISPASYNC_TARGET_ACTION:
	{
		isphdr_t *hp;

		va_start(ap, cmd);
		hp = va_arg(ap, isphdr_t *);
		va_end(ap);
		switch (hp->rqs_entry_type) {
		case RQSTYPE_ATIO:
			isp_handle_platform_atio7(isp, (at7_entry_t *)hp);
			break;
		case RQSTYPE_CTIO7:
			isp_handle_platform_ctio(isp, (ct7_entry_t *)hp);
			break;
		default:
			isp_prt(isp, ISP_LOGWARN, "%s: unhandled target action 0x%x",
			    __func__, hp->rqs_entry_type);
			break;
		}
		break;
	}
#endif
	case ISPASYNC_FW_CRASH:
	{
		uint16_t mbox1;
		mbox1 = ISP_READ(isp, OUTMAILBOX1);
		isp_prt(isp, ISP_LOGERR, "Internal Firmware Error @ RISC Address 0x%x", mbox1);
#if 0
		isp_reinit(isp, 1);
		isp_async(isp, ISPASYNC_FW_RESTARTED, NULL);
#endif
		break;
	}
	default:
		isp_prt(isp, ISP_LOGERR, "unknown isp_async event %d", cmd);
		break;
	}
}

uint64_t
isp_default_wwn(ispsoftc_t * isp, int chan, int isactive, int iswwnn)
{
	uint64_t seed;
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	/* First try to use explicitly configured WWNs. */
	seed = iswwnn ? fc->def_wwnn : fc->def_wwpn;
	if (seed)
		return (seed);

	/* Otherwise try to use WWNs from NVRAM. */
	if (isactive) {
		seed = iswwnn ? FCPARAM(isp, chan)->isp_wwnn_nvram :
		    FCPARAM(isp, chan)->isp_wwpn_nvram;
		if (seed)
			return (seed);
	}

	/* If still no WWNs, try to steal them from the first channel. */
	if (chan > 0) {
		seed = iswwnn ? ISP_FC_PC(isp, 0)->def_wwnn :
		    ISP_FC_PC(isp, 0)->def_wwpn;
		if (seed == 0) {
			seed = iswwnn ? FCPARAM(isp, 0)->isp_wwnn_nvram :
			    FCPARAM(isp, 0)->isp_wwpn_nvram;
		}
	}

	/* If still nothing -- improvise. */
	if (seed == 0) {
		seed = 0x400000007F000000ull + device_get_unit(isp->isp_dev);
		if (!iswwnn)
			seed ^= 0x0100000000000000ULL;
	}

	/* For additional channels we have to improvise even more. */
	if (!iswwnn && chan > 0) {
		/*
		 * We'll stick our channel number plus one first into bits
		 * 57..59 and thence into bits 52..55 which allows for 8 bits
		 * of channel which is enough for our maximum of 255 channels.
		 */
		seed ^= 0x0100000000000000ULL;
		seed ^= ((uint64_t) (chan + 1) & 0xf) << 56;
		seed ^= ((uint64_t) ((chan + 1) >> 4) & 0xf) << 52;
	}
	return (seed);
}

void
isp_prt(ispsoftc_t *isp, int level, const char *fmt, ...)
{
	int loc;
	char lbuf[200];
	va_list ap;

	if (level != ISP_LOGALL && (level & isp->isp_dblev) == 0) {
		return;
	}
	snprintf(lbuf, sizeof (lbuf), "%s: ", device_get_nameunit(isp->isp_dev));
	loc = strlen(lbuf);
	va_start(ap, fmt);
	vsnprintf(&lbuf[loc], sizeof (lbuf) - loc - 1, fmt, ap);
	va_end(ap);
	printf("%s\n", lbuf);
}

void
isp_xs_prt(ispsoftc_t *isp, XS_T *xs, int level, const char *fmt, ...)
{
	va_list ap;
	if (level != ISP_LOGALL && (level & isp->isp_dblev) == 0) {
		return;
	}
	xpt_print_path(xs->ccb_h.path);
	va_start(ap, fmt);
	vprintf(fmt, ap);
	va_end(ap);
	printf("\n");
}

uint64_t
isp_nanotime_sub(struct timespec *b, struct timespec *a)
{
	uint64_t elapsed;
	struct timespec x;

	timespecsub(b, a, &x);
	elapsed = GET_NANOSEC(&x);
	if (elapsed == 0)
		elapsed++;
	return (elapsed);
}

int
isp_fc_scratch_acquire(ispsoftc_t *isp, int chan)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);

	if (fc->fcbsy)
		return (-1);
	fc->fcbsy = 1;
	return (0);
}

void
isp_platform_intr(void *arg)
{
	ispsoftc_t *isp = arg;

	ISP_LOCK(isp);
	ISP_RUN_ISR(isp);
	ISP_UNLOCK(isp);
}

void
isp_platform_intr_resp(void *arg)
{
	ispsoftc_t *isp = arg;

	ISP_LOCK(isp);
	isp_intr_respq(isp);
	ISP_UNLOCK(isp);

	/* We have handshake enabled, so explicitly complete interrupt */
	ISP_WRITE(isp, BIU2400_HCCR, HCCR_2400_CMD_CLEAR_RISC_INT);
}

void
isp_platform_intr_atio(void *arg)
{
	ispsoftc_t *isp = arg;

	ISP_LOCK(isp);
#ifdef	ISP_TARGET_MODE
	isp_intr_atioq(isp);
#endif
	ISP_UNLOCK(isp);

	/* We have handshake enabled, so explicitly complete interrupt */
	ISP_WRITE(isp, BIU2400_HCCR, HCCR_2400_CMD_CLEAR_RISC_INT);
}

typedef struct {
	ispsoftc_t		*isp;
	struct ccb_scsiio	*csio;
	void			*qe;
	int			error;
} mush_t;

static void
isp_dma2(void *arg, bus_dma_segment_t *dm_segs, int nseg, int error)
{
	mush_t *mp = (mush_t *) arg;
	ispsoftc_t *isp= mp->isp;
	struct ccb_scsiio *csio = mp->csio;
	bus_dmasync_op_t op;

	if (error) {
		mp->error = error;
		return;
	}
	if ((csio->ccb_h.func_code == XPT_CONT_TARGET_IO) ^
	    ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN))
		op = BUS_DMASYNC_PREREAD;
	else
		op = BUS_DMASYNC_PREWRITE;
	bus_dmamap_sync(isp->isp_osinfo.dmat, PISP_PCMD(csio)->dmap, op);

	mp->error = ISP_SEND_CMD(isp, mp->qe, dm_segs, nseg);
	if (mp->error)
		isp_dmafree(isp, csio);
}

int
isp_dmasetup(ispsoftc_t *isp, struct ccb_scsiio *csio, void *qe)
{
	mush_t mp;
	int error;

	if (XS_XFRLEN(csio)) {
		mp.isp = isp;
		mp.csio = csio;
		mp.qe = qe;
		mp.error = 0;
		error = bus_dmamap_load_ccb(isp->isp_osinfo.dmat, PISP_PCMD(csio)->dmap,
		    (union ccb *)csio, isp_dma2, &mp, BUS_DMA_NOWAIT);
		if (error == 0)
			error = mp.error;
	} else {
		error = ISP_SEND_CMD(isp, qe, NULL, 0);
	}
	switch (error) {
	case 0:
	case CMD_COMPLETE:
	case CMD_EAGAIN:
	case CMD_RQLATER:
		break;
	case ENOMEM:
		error = CMD_EAGAIN;
		break;
	case EINVAL:
	case EFBIG:
		csio->ccb_h.status = CAM_REQ_INVALID;
		error = CMD_COMPLETE;
		break;
	default:
		csio->ccb_h.status = CAM_UNREC_HBA_ERROR;
		error = CMD_COMPLETE;
		break;
	}
	return (error);
}

void
isp_dmafree(ispsoftc_t *isp, struct ccb_scsiio *csio)
{
	bus_dmasync_op_t op;

	if (XS_XFRLEN(csio) == 0)
		return;

	if ((csio->ccb_h.func_code == XPT_CONT_TARGET_IO) ^
	    ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN))
		op = BUS_DMASYNC_POSTREAD;
	else
		op = BUS_DMASYNC_POSTWRITE;
	bus_dmamap_sync(isp->isp_osinfo.dmat, PISP_PCMD(csio)->dmap, op);
	bus_dmamap_unload(isp->isp_osinfo.dmat, PISP_PCMD(csio)->dmap);
}

/*
 * Reset the command reference number for all LUNs on a specific target
 * (needed when a target arrives again) or for all targets on a port
 * (needed for events like a LIP).
 */
void
isp_fcp_reset_crn(ispsoftc_t *isp, int chan, uint32_t tgt, int tgt_set)
{
	struct isp_fc *fc = ISP_FC_PC(isp, chan);
	struct isp_nexus *nxp;
	int i;

	if (tgt_set == 0)
		isp_prt(isp, ISP_LOGDEBUG0,
		    "Chan %d resetting CRN on all targets", chan);
	else
		isp_prt(isp, ISP_LOGDEBUG0,
		    "Chan %d resetting CRN on target %u", chan, tgt);

	for (i = 0; i < NEXUS_HASH_WIDTH; i++) {
		for (nxp = fc->nexus_hash[i]; nxp != NULL; nxp = nxp->next) {
			if (tgt_set == 0 || tgt == nxp->tgt)
				nxp->crnseed = 0;
		}
	}
}

int
isp_fcp_next_crn(ispsoftc_t *isp, uint8_t *crnp, XS_T *cmd)
{
	lun_id_t lun;
	uint32_t chan, tgt;
	struct isp_fc *fc;
	struct isp_nexus *nxp;
	int idx;

	chan = XS_CHANNEL(cmd);
	tgt = XS_TGT(cmd);
	lun = XS_LUN(cmd);
	fc = ISP_FC_PC(isp, chan);
	idx = NEXUS_HASH(tgt, lun);
	nxp = fc->nexus_hash[idx];

	while (nxp) {
		if (nxp->tgt == tgt && nxp->lun == lun)
			break;
		nxp = nxp->next;
	}
	if (nxp == NULL) {
		nxp = fc->nexus_free_list;
		if (nxp == NULL) {
			nxp = malloc(sizeof (struct isp_nexus), M_DEVBUF, M_ZERO|M_NOWAIT);
			if (nxp == NULL) {
				return (-1);
			}
		} else {
			fc->nexus_free_list = nxp->next;
		}
		nxp->tgt = tgt;
		nxp->lun = lun;
		nxp->next = fc->nexus_hash[idx];
		fc->nexus_hash[idx] = nxp;
	}
	if (nxp->crnseed == 0)
		nxp->crnseed = 1;
	*crnp = nxp->crnseed++;
	return (0);
}

/*
 * We enter with the lock held
 */
void
isp_timer(void *arg)
{
	ispsoftc_t *isp = arg;
#ifdef	ISP_TARGET_MODE
	isp_tmcmd_restart(isp);
#endif
	callout_reset(&isp->isp_osinfo.tmo, isp_timer_count, isp_timer, isp);
}

#ifdef	ISP_TARGET_MODE
isp_ecmd_t *
isp_get_ecmd(ispsoftc_t *isp)
{
	isp_ecmd_t *ecmd = isp->isp_osinfo.ecmd_free;
	if (ecmd) {
		isp->isp_osinfo.ecmd_free = ecmd->next;
	}
	return (ecmd);
}

void
isp_put_ecmd(ispsoftc_t *isp, isp_ecmd_t *ecmd)
{
	ecmd->next = isp->isp_osinfo.ecmd_free;
	isp->isp_osinfo.ecmd_free = ecmd;
}
#endif