532 lines
14 KiB
C
532 lines
14 KiB
C
/* $NetBSD: isp_netbsd.c,v 1.13 1999/04/04 02:29:34 mjacob Exp $ */
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/* release_4_3_99 */
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/*
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* Platform (NetBSD) dependent common attachment code for Qlogic adapters.
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*
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*---------------------------------------
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* Copyright (c) 1997, 1998 by Matthew Jacob
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* NASA/Ames Research Center
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* All rights reserved.
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*---------------------------------------
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The author may be reached via electronic communications at
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*
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* mjacob@nas.nasa.gov
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* mjacob@feral.com
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*
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* or, via United States Postal Address
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*
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* Matthew Jacob
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* Feral Software
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* 2339 3rd Street
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* Suite 24
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* San Francisco, CA, 94107
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*/
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#include <dev/ic/isp_netbsd.h>
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static void ispminphys __P((struct buf *));
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static int32_t ispcmd __P((ISP_SCSI_XFER_T *));
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static struct scsipi_device isp_dev = { NULL, NULL, NULL, NULL };
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static int isp_poll __P((struct ispsoftc *, ISP_SCSI_XFER_T *, int));
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static void isp_watch __P((void *));
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static void isp_internal_restart __P((void *));
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#define FC_OPENINGS RQUEST_QUEUE_LEN / (MAX_FC_TARG-1)
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#define PI_OPENINGS RQUEST_QUEUE_LEN / (MAX_TARGETS-1)
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/*
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* Complete attachment of hardware, include subdevices.
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*/
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void
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isp_attach(isp)
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struct ispsoftc *isp;
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{
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isp->isp_osinfo._adapter.scsipi_cmd = ispcmd;
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isp->isp_osinfo._adapter.scsipi_minphys = ispminphys;
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isp->isp_state = ISP_RUNSTATE;
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isp->isp_osinfo._link.scsipi_scsi.channel = SCSI_CHANNEL_ONLY_ONE;
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isp->isp_osinfo._link.adapter_softc = isp;
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isp->isp_osinfo._link.device = &isp_dev;
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isp->isp_osinfo._link.adapter = &isp->isp_osinfo._adapter;
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TAILQ_INIT(&isp->isp_osinfo.waitq);
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if (isp->isp_type & ISP_HA_FC) {
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/*
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* Give it another chance here to come alive...
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*/
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fcparam *fcp = isp->isp_param;
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if (fcp->isp_fwstate != FW_READY) {
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(void) isp_control(isp, ISPCTL_FCLINK_TEST, NULL);
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}
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isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_FC_TARG-1;
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#ifdef ISP2100_SCCLUN
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/*
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* 16 bits worth, but let's be reasonable..
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*/
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isp->isp_osinfo._link.scsipi_scsi.max_lun = 255;
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#else
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isp->isp_osinfo._link.scsipi_scsi.max_lun = 15;
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#endif
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isp->isp_osinfo._link.openings = FC_OPENINGS;
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isp->isp_osinfo._link.scsipi_scsi.adapter_target =
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((fcparam *)isp->isp_param)->isp_loopid;
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} else {
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isp->isp_osinfo._link.openings = PI_OPENINGS;
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isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_TARGETS-1;
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if (isp->isp_bustype == ISP_BT_SBUS) {
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isp->isp_osinfo._link.scsipi_scsi.max_lun = 7;
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} else {
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/*
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* Too much target breakage at present.
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*/
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#if 0
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if (isp->isp_fwrev >= ISP_FW_REV(7,55,0))
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isp->isp_osinfo._link.scsipi_scsi.max_lun = 31;
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else
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#endif
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isp->isp_osinfo._link.scsipi_scsi.max_lun = 7;
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}
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isp->isp_osinfo._link.scsipi_scsi.adapter_target =
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((sdparam *)isp->isp_param)->isp_initiator_id;
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}
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if (isp->isp_osinfo._link.openings < 2)
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isp->isp_osinfo._link.openings = 2;
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isp->isp_osinfo._link.type = BUS_SCSI;
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/*
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* Send a SCSI Bus Reset (used to be done as part of attach,
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* but now left to the OS outer layers).
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*
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* XXX: For now, skip resets for FC because the method by which
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* XXX: we deal with loop down after issuing resets (which causes
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* XXX: port logouts for all devices) needs interrupts to run so
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* XXX: that async events happen.
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*/
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if (isp->isp_type & ISP_HA_SCSI) {
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(void) isp_control(isp, ISPCTL_RESET_BUS, NULL);
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SYS_DELAY(2*1000000);
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} else {
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;
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}
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/*
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* Start the watchdog.
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*/
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isp->isp_dogactive = 1;
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timeout(isp_watch, isp, 30 * hz);
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/*
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* And attach children (if any).
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*/
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config_found((void *)isp, &isp->isp_osinfo._link, scsiprint);
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}
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/*
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* minphys our xfers
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*
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* Unfortunately, the buffer pointer describes the target device- not the
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* adapter device, so we can't use the pointer to find out what kind of
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* adapter we are and adjust accordingly.
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*/
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static void
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ispminphys(bp)
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struct buf *bp;
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{
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/*
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* XX: Only the 1020 has a 24 bit limit.
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*/
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if (bp->b_bcount >= (1 << 24)) {
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bp->b_bcount = (1 << 24);
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}
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minphys(bp);
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}
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static int
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ispcmd(xs)
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ISP_SCSI_XFER_T *xs;
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{
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struct ispsoftc *isp;
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int result;
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int s;
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isp = XS_ISP(xs);
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s = splbio();
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/*
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* This is less efficient than I would like in that the
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* majority of cases will have to do some pointer deferences
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* to find out that things don't need to be updated.
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*/
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if ((xs->flags & SCSI_AUTOCONF) == 0 && (isp->isp_type & ISP_HA_SCSI)) {
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sdparam *sdp = isp->isp_param;
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if (sdp->isp_devparam[XS_TGT(xs)].dev_flags !=
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sdp->isp_devparam[XS_TGT(xs)].cur_dflags) {
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u_int16_t f = DPARM_WIDE|DPARM_SYNC|DPARM_TQING;
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if (xs->sc_link->quirks & SDEV_NOSYNC)
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f &= ~DPARM_SYNC;
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if (xs->sc_link->quirks & SDEV_NOWIDE)
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f &= ~DPARM_WIDE;
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if (xs->sc_link->quirks & SDEV_NOTAG)
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f &= ~DPARM_TQING;
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sdp->isp_devparam[XS_TGT(xs)].dev_flags &=
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~(DPARM_WIDE|DPARM_SYNC|DPARM_TQING);
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sdp->isp_devparam[XS_TGT(xs)].dev_flags |= f;
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sdp->isp_devparam[XS_TGT(xs)].dev_update = 1;
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isp->isp_update = 1;
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}
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}
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if (isp->isp_state < ISP_RUNSTATE) {
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DISABLE_INTS(isp);
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isp_init(isp);
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if (isp->isp_state != ISP_INITSTATE) {
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ENABLE_INTS(isp);
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(void) splx(s);
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XS_SETERR(xs, HBA_BOTCH);
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return (CMD_COMPLETE);
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}
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isp->isp_state = ISP_RUNSTATE;
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ENABLE_INTS(isp);
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}
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/*
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* Check for queue blockage...
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*/
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if (isp->isp_osinfo.blocked) {
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if (xs->flags & SCSI_POLL) {
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xs->error = XS_DRIVER_STUFFUP;
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splx(s);
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return (TRY_AGAIN_LATER);
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}
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TAILQ_INSERT_TAIL(&isp->isp_osinfo.waitq, xs, adapter_q);
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splx(s);
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return (CMD_QUEUED);
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}
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DISABLE_INTS(isp);
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result = ispscsicmd(xs);
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ENABLE_INTS(isp);
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if (result != CMD_QUEUED || (xs->flags & SCSI_POLL) == 0) {
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(void) splx(s);
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return (result);
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}
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/*
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* If we can't use interrupts, poll on completion.
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*/
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if (isp_poll(isp, xs, XS_TIME(xs))) {
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/*
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* If no other error occurred but we didn't finish,
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* something bad happened.
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*/
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if (XS_IS_CMD_DONE(xs) == 0) {
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isp->isp_nactive--;
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if (isp->isp_nactive < 0)
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isp->isp_nactive = 0;
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if (XS_NOERR(xs)) {
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isp_lostcmd(isp, xs);
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XS_SETERR(xs, HBA_BOTCH);
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}
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}
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}
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(void) splx(s);
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return (CMD_COMPLETE);
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}
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static int
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isp_poll(isp, xs, mswait)
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struct ispsoftc *isp;
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ISP_SCSI_XFER_T *xs;
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int mswait;
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{
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while (mswait) {
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/* Try the interrupt handling routine */
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(void)isp_intr((void *)isp);
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/* See if the xs is now done */
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if (XS_IS_CMD_DONE(xs)) {
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return (0);
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}
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SYS_DELAY(1000); /* wait one millisecond */
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mswait--;
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}
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return (1);
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}
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static void
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isp_watch(arg)
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void *arg;
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{
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int i;
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struct ispsoftc *isp = arg;
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ISP_SCSI_XFER_T *xs;
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ISP_ILOCKVAL_DECL;
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/*
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* Look for completely dead commands (but not polled ones).
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*/
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ISP_ILOCK(isp);
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for (i = 0; i < RQUEST_QUEUE_LEN; i++) {
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if ((xs = (ISP_SCSI_XFER_T *) isp->isp_xflist[i]) == NULL) {
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continue;
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}
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if (XS_TIME(xs) == 0) {
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continue;
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}
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XS_TIME(xs) -= (WATCH_INTERVAL * 1000);
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/*
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* Avoid later thinking that this
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* transaction is not being timed.
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* Then give ourselves to watchdog
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* periods of grace.
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*/
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if (XS_TIME(xs) == 0) {
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XS_TIME(xs) = 1;
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} else if (XS_TIME(xs) > -(2 * WATCH_INTERVAL * 1000)) {
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continue;
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}
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if (isp_control(isp, ISPCTL_ABORT_CMD, xs)) {
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printf("%s: isp_watch failed to abort command\n",
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isp->isp_name);
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isp_restart(isp);
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break;
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}
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}
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timeout(isp_watch, isp, WATCH_INTERVAL * hz);
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isp->isp_dogactive = 1;
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ISP_IUNLOCK(isp);
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}
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/*
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* Free any associated resources prior to decommissioning and
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* set the card to a known state (so it doesn't wake up and kick
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* us when we aren't expecting it to).
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*
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* Locks are held before coming here.
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*/
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void
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isp_uninit(isp)
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struct ispsoftc *isp;
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{
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ISP_ILOCKVAL_DECL;
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ISP_ILOCK(isp);
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/*
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* Leave with interrupts disabled.
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*/
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DISABLE_INTS(isp);
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/*
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* Turn off the watchdog (if active).
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*/
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if (isp->isp_dogactive) {
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untimeout(isp_watch, isp);
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isp->isp_dogactive = 0;
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}
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ISP_IUNLOCK(isp);
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}
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/*
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* Restart function after a LOOP UP event (e.g.),
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* done as a timeout for some hysteresis.
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*/
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static void
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isp_internal_restart(arg)
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void *arg;
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{
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struct ispsoftc *isp = arg;
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int result, nrestarted = 0, s;
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s = splbio();
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if (isp->isp_osinfo.blocked == 0) {
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struct scsipi_xfer *xs;
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while ((xs = TAILQ_FIRST(&isp->isp_osinfo.waitq)) != NULL) {
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TAILQ_REMOVE(&isp->isp_osinfo.waitq, xs, adapter_q);
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DISABLE_INTS(isp);
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result = ispscsicmd(xs);
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ENABLE_INTS(isp);
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if (result != CMD_QUEUED) {
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printf("%s: botched command restart (0x%x)\n",
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isp->isp_name, result);
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xs->flags |= ITSDONE;
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if (xs->error == XS_NOERROR)
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xs->error = XS_DRIVER_STUFFUP;
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scsipi_done(xs);
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}
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nrestarted++;
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}
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printf("%s: requeued %d commands\n", isp->isp_name, nrestarted);
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}
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(void) splx(s);
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}
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int
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isp_async(isp, cmd, arg)
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struct ispsoftc *isp;
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ispasync_t cmd;
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void *arg;
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{
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int s = splbio();
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switch (cmd) {
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case ISPASYNC_NEW_TGT_PARAMS:
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if (isp->isp_type & ISP_HA_SCSI) {
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sdparam *sdp = isp->isp_param;
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char *wt;
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int mhz, flags, tgt, period;
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tgt = *((int *) arg);
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flags = sdp->isp_devparam[tgt].cur_dflags;
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period = sdp->isp_devparam[tgt].cur_period;
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if ((flags & DPARM_SYNC) && period &&
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(sdp->isp_devparam[tgt].cur_offset) != 0) {
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if (sdp->isp_lvdmode) {
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switch (period) {
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case 0xa:
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mhz = 40;
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break;
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case 0xb:
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mhz = 33;
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break;
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case 0xc:
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mhz = 25;
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break;
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default:
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mhz = 1000 / (period * 4);
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break;
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}
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} else {
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mhz = 1000 / (period * 4);
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}
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} else {
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mhz = 0;
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}
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switch (flags & (DPARM_WIDE|DPARM_TQING)) {
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case DPARM_WIDE:
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wt = ", 16 bit wide\n";
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break;
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case DPARM_TQING:
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wt = ", Tagged Queueing Enabled\n";
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break;
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case DPARM_WIDE|DPARM_TQING:
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wt = ", 16 bit wide, Tagged Queueing Enabled\n";
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break;
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default:
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wt = "\n";
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break;
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}
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if (mhz) {
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printf("%s: Target %d at %dMHz Max Offset %d%s",
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isp->isp_name, tgt, mhz,
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sdp->isp_devparam[tgt].cur_offset, wt);
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} else {
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printf("%s: Target %d Async Mode%s",
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isp->isp_name, tgt, wt);
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}
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}
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break;
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case ISPASYNC_BUS_RESET:
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printf("%s: SCSI bus reset detected\n", isp->isp_name);
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break;
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case ISPASYNC_LOOP_DOWN:
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/*
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* Hopefully we get here in time to minimize the number
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* of commands we are firing off that are sure to die.
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*/
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isp->isp_osinfo.blocked = 1;
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printf("%s: Loop DOWN\n", isp->isp_name);
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break;
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case ISPASYNC_LOOP_UP:
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isp->isp_osinfo.blocked = 0;
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timeout(isp_internal_restart, isp, 1);
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printf("%s: Loop UP\n", isp->isp_name);
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break;
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case ISPASYNC_PDB_CHANGE_COMPLETE:
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if (isp->isp_type & ISP_HA_FC) {
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static char *roles[4] = {
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"No", "Target", "Initiator", "Target/Initiator"
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};
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long tgt = (long) arg;
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isp_pdb_t *pdbp = &((fcparam *)isp->isp_param)->isp_pdb[tgt];
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printf("%s: Loop ID %d, %s role\n",
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isp->isp_name, pdbp->pdb_loopid,
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roles[(pdbp->pdb_prli_svc3 >> 4) & 0x3]);
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printf(" Node Address 0x%x WWN 0x"
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"%02x%02x%02x%02x%02x%02x%02x%02x\n",
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BITS2WORD(pdbp->pdb_portid_bits),
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pdbp->pdb_portname[0], pdbp->pdb_portname[1],
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pdbp->pdb_portname[2], pdbp->pdb_portname[3],
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pdbp->pdb_portname[4], pdbp->pdb_portname[5],
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pdbp->pdb_portname[6], pdbp->pdb_portname[7]);
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if (pdbp->pdb_options & PDB_OPTIONS_ADISC)
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printf(" Hard Address 0x%x WWN 0x"
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"%02x%02x%02x%02x%02x%02x%02x%02x\n",
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BITS2WORD(pdbp->pdb_hardaddr_bits),
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pdbp->pdb_nodename[0],
|
|
pdbp->pdb_nodename[1],
|
|
pdbp->pdb_nodename[2],
|
|
pdbp->pdb_nodename[3],
|
|
pdbp->pdb_nodename[4],
|
|
pdbp->pdb_nodename[5],
|
|
pdbp->pdb_nodename[6],
|
|
pdbp->pdb_nodename[7]);
|
|
switch (pdbp->pdb_prli_svc3 & SVC3_ROLE_MASK) {
|
|
case SVC3_TGT_ROLE|SVC3_INI_ROLE:
|
|
printf(" Master State=%s, Slave State=%s\n",
|
|
isp2100_pdb_statename(pdbp->pdb_mstate),
|
|
isp2100_pdb_statename(pdbp->pdb_sstate));
|
|
break;
|
|
case SVC3_TGT_ROLE:
|
|
printf(" Master State=%s\n",
|
|
isp2100_pdb_statename(pdbp->pdb_mstate));
|
|
break;
|
|
case SVC3_INI_ROLE:
|
|
printf(" Slave State=%s\n",
|
|
isp2100_pdb_statename(pdbp->pdb_sstate));
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case ISPASYNC_CHANGE_NOTIFY:
|
|
printf("%s: Name Server Database Changed\n", isp->isp_name);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
(void) splx(s);
|
|
return (0);
|
|
}
|