/* $NetBSD: isp_netbsd.c,v 1.10 1999/02/09 00:42:22 mjacob Exp $ */ /* release_02_05_99 */ /* * Platform (NetBSD) dependent common attachment code for Qlogic adapters. * *--------------------------------------- * Copyright (c) 1997, 1998 by Matthew Jacob * NASA/Ames Research Center * All rights reserved. *--------------------------------------- * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice immediately at the beginning of the file, without modification, * this list of conditions, and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The author may be reached via electronic communications at * * mjacob@nas.nasa.gov * mjacob@feral.com * * or, via United States Postal Address * * Matthew Jacob * Feral Software * 2339 3rd Street * Suite 24 * San Francisco, CA, 94107 */ #include static void ispminphys __P((struct buf *)); static int32_t ispcmd __P((ISP_SCSI_XFER_T *)); static struct scsipi_device isp_dev = { NULL, NULL, NULL, NULL }; static int isp_poll __P((struct ispsoftc *, ISP_SCSI_XFER_T *, int)); static void isp_watch __P((void *)); static void isp_internal_restart __P((void *)); #define FC_OPENINGS RQUEST_QUEUE_LEN / (MAX_FC_TARG-1) #define PI_OPENINGS RQUEST_QUEUE_LEN / (MAX_TARGETS-1) /* * Complete attachment of hardware, include subdevices. */ void isp_attach(isp) struct ispsoftc *isp; { isp->isp_osinfo._adapter.scsipi_cmd = ispcmd; isp->isp_osinfo._adapter.scsipi_minphys = ispminphys; isp->isp_state = ISP_RUNSTATE; isp->isp_osinfo._link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE; isp->isp_osinfo._link.adapter_softc = isp; isp->isp_osinfo._link.device = &isp_dev; isp->isp_osinfo._link.adapter = &isp->isp_osinfo._adapter; TAILQ_INIT(&isp->isp_osinfo.waitq); if (isp->isp_type & ISP_HA_FC) { isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_FC_TARG-1; #ifdef SCCLUN /* * 16 bits worth, but let's be reasonable.. */ isp->isp_osinfo._link.scsipi_scsi.max_lun = 255; #else isp->isp_osinfo._link.scsipi_scsi.max_lun = 15; #endif isp->isp_osinfo._link.openings = FC_OPENINGS; isp->isp_osinfo._link.scsipi_scsi.adapter_target = ((fcparam *)isp->isp_param)->isp_loopid; } else { isp->isp_osinfo._link.openings = PI_OPENINGS; isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_TARGETS-1; if (isp->isp_bustype == ISP_BT_SBUS) { isp->isp_osinfo._link.scsipi_scsi.max_lun = 7; } else { /* * Too much target breakage at present. */ #if 0 if (isp->isp_fwrev >= ISP_FW_REV(7,55)) isp->isp_osinfo._link.scsipi_scsi.max_lun = 31; else #endif isp->isp_osinfo._link.scsipi_scsi.max_lun = 7; } isp->isp_osinfo._link.scsipi_scsi.adapter_target = ((sdparam *)isp->isp_param)->isp_initiator_id; } if (isp->isp_osinfo._link.openings < 2) isp->isp_osinfo._link.openings = 2; isp->isp_osinfo._link.type = BUS_SCSI; /* * Send a SCSI Bus Reset (used to be done as part of attach, * but now left to the OS outer layers). * * XXX: For now, skip resets for FC because the method by which * XXX: we deal with loop down after issuing resets (which causes * XXX: port logouts for all devices) needs interrupts to run so * XXX: that async events happen. */ if (isp->isp_type & ISP_HA_SCSI) (void) isp_control(isp, ISPCTL_RESET_BUS, NULL); /* * Start the watchdog. */ isp->isp_dogactive = 1; timeout(isp_watch, isp, 30 * hz); /* * And attach children (if any). */ config_found((void *)isp, &isp->isp_osinfo._link, scsiprint); } /* * minphys our xfers * * Unfortunately, the buffer pointer describes the target device- not the * adapter device, so we can't use the pointer to find out what kind of * adapter we are and adjust accordingly. */ static void ispminphys(bp) struct buf *bp; { /* * XX: Only the 1020 has a 24 bit limit. */ if (bp->b_bcount >= (1 << 24)) { bp->b_bcount = (1 << 24); } minphys(bp); } static int ispcmd(xs) ISP_SCSI_XFER_T *xs; { struct ispsoftc *isp; int result; int s; isp = XS_ISP(xs); s = splbio(); /* * This is less efficient than I would like in that the * majority of cases will have to do some pointer deferences * to find out that things don't need to be updated. */ if ((xs->flags & SCSI_AUTOCONF) == 0 && (isp->isp_type & ISP_HA_SCSI)) { sdparam *sdp = isp->isp_param; if (sdp->isp_devparam[XS_TGT(xs)].dev_flags != sdp->isp_devparam[XS_TGT(xs)].cur_dflags) { u_int16_t f = DPARM_WIDE|DPARM_SYNC|DPARM_TQING; if (xs->sc_link->quirks & SDEV_NOSYNC) f &= ~DPARM_SYNC; if (xs->sc_link->quirks & SDEV_NOWIDE) f &= ~DPARM_WIDE; if (xs->sc_link->quirks & SDEV_NOTAG) f &= ~DPARM_TQING; sdp->isp_devparam[XS_TGT(xs)].dev_flags &= ~(DPARM_WIDE|DPARM_SYNC|DPARM_TQING); sdp->isp_devparam[XS_TGT(xs)].dev_flags |= f; sdp->isp_devparam[XS_TGT(xs)].dev_update = 1; isp->isp_update = 1; } } /* * Check for queue blockage... */ if (isp->isp_osinfo.blocked) { if (xs->flags & SCSI_POLL) { xs->error = XS_DRIVER_STUFFUP; splx(s); return (TRY_AGAIN_LATER); } TAILQ_INSERT_TAIL(&isp->isp_osinfo.waitq, xs, adapter_q); splx(s); return (CMD_QUEUED); } result = ispscsicmd(xs); if (result != CMD_QUEUED || (xs->flags & SCSI_POLL) == 0) { (void) splx(s); return (result); } /* * If we can't use interrupts, poll on completion. */ if (isp_poll(isp, xs, XS_TIME(xs))) { /* * If no other error occurred but we didn't finish, * something bad happened. */ if (XS_IS_CMD_DONE(xs) == 0) { isp->isp_nactive--; if (isp->isp_nactive < 0) isp->isp_nactive = 0; if (XS_NOERR(xs)) { isp_lostcmd(isp, xs); XS_SETERR(xs, HBA_BOTCH); } } } (void) splx(s); return (CMD_COMPLETE); } static int isp_poll(isp, xs, mswait) struct ispsoftc *isp; ISP_SCSI_XFER_T *xs; int mswait; { while (mswait) { /* Try the interrupt handling routine */ (void)isp_intr((void *)isp); /* See if the xs is now done */ if (XS_IS_CMD_DONE(xs)) { return (0); } SYS_DELAY(1000); /* wait one millisecond */ mswait--; } return (1); } static void isp_watch(arg) void *arg; { int i; struct ispsoftc *isp = arg; ISP_SCSI_XFER_T *xs; ISP_ILOCKVAL_DECL; /* * Look for completely dead commands (but not polled ones). */ ISP_ILOCK(isp); for (i = 0; i < RQUEST_QUEUE_LEN; i++) { if ((xs = (ISP_SCSI_XFER_T *) isp->isp_xflist[i]) == NULL) { continue; } if (XS_TIME(xs) == 0) { continue; } XS_TIME(xs) -= (WATCH_INTERVAL * 1000); /* * Avoid later thinking that this * transaction is not being timed. * Then give ourselves to watchdog * periods of grace. */ if (XS_TIME(xs) == 0) { XS_TIME(xs) = 1; } else if (XS_TIME(xs) > -(2 * WATCH_INTERVAL * 1000)) { continue; } if (isp_control(isp, ISPCTL_ABORT_CMD, xs)) { printf("%s: isp_watch failed to abort command\n", isp->isp_name); isp_restart(isp); break; } } timeout(isp_watch, isp, WATCH_INTERVAL * hz); isp->isp_dogactive = 1; ISP_IUNLOCK(isp); } /* * Free any associated resources prior to decommissioning and * set the card to a known state (so it doesn't wake up and kick * us when we aren't expecting it to). * * Locks are held before coming here. */ void isp_uninit(isp) struct ispsoftc *isp; { ISP_ILOCKVAL_DECL; ISP_ILOCK(isp); /* * Leave with interrupts disabled. */ DISABLE_INTS(isp); /* * Turn off the watchdog (if active). */ if (isp->isp_dogactive) { untimeout(isp_watch, isp); isp->isp_dogactive = 0; } ISP_IUNLOCK(isp); } /* * Restart function after a LOOP UP event (e.g.), * done as a timeout for some hysteresis. */ static void isp_internal_restart(arg) void *arg; { struct ispsoftc *isp = arg; int result, nrestarted = 0, s = splbio(); if (isp->isp_osinfo.blocked == 0) { struct scsipi_xfer *xs; while ((xs = TAILQ_FIRST(&isp->isp_osinfo.waitq)) != NULL) { TAILQ_REMOVE(&isp->isp_osinfo.waitq, xs, adapter_q); if ((result = ispscsicmd(xs)) != CMD_QUEUED) { printf("%s: botched command restart (0x%x)\n", isp->isp_name, result); xs->flags |= ITSDONE; if (xs->error == XS_NOERROR) xs->error = XS_DRIVER_STUFFUP; scsipi_done(xs); } nrestarted++; } printf("%s: requeued %d commands\n", isp->isp_name, nrestarted); } (void) splx(s); } int isp_async(isp, cmd, arg) struct ispsoftc *isp; ispasync_t cmd; void *arg; { int s = splbio(); switch (cmd) { case ISPASYNC_LOOP_DOWN: /* * Hopefully we get here in time to minimize the number * of commands we are firing off that are sure to die. */ isp->isp_osinfo.blocked = 1; break; case ISPASYNC_LOOP_UP: isp->isp_osinfo.blocked = 0; timeout(isp_internal_restart, isp, 1); break; case ISPASYNC_NEW_TGT_PARAMS: if (isp->isp_type & ISP_HA_SCSI) { sdparam *sdp = isp->isp_param; char *wt; int ns, flags, tgt; tgt = *((int *) arg); flags = sdp->isp_devparam[tgt].dev_flags; if (flags & DPARM_SYNC) { ns = sdp->isp_devparam[tgt].sync_period * 4; } else { ns = 0; } switch (flags & (DPARM_WIDE|DPARM_TQING)) { case DPARM_WIDE: wt = ", 16 bit wide\n"; break; case DPARM_TQING: wt = ", Tagged Queueing Enabled\n"; break; case DPARM_WIDE|DPARM_TQING: wt = ", 16 bit wide, Tagged Queueing Enabled\n"; break; default: wt = "\n"; break; } if (ns) { printf("%s: Target %d at %dMHz Max Offset %d%s", isp->isp_name, tgt, 1000 / ns, sdp->isp_devparam[tgt].sync_offset, wt); } else { printf("%s: Target %d Async Mode%s", isp->isp_name, tgt, wt); } } break; default: break; } (void) splx(s); return (0); }