217 lines
6.2 KiB
C
217 lines
6.2 KiB
C
/* $NetBSD: isp_netbsd.c,v 1.7 1998/12/05 19:48:23 mjacob Exp $ */
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/* isp_netbsd.c 1.15 */
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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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/*
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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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if (isp->isp_type & ISP_HA_FC) {
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isp->isp_osinfo._link.scsipi_scsi.max_target = MAX_FC_TARG-1;
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#ifdef 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 =
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RQUEST_QUEUE_LEN / (MAX_FC_TARG-1);
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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 =
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RQUEST_QUEUE_LEN / (MAX_TARGETS-1);
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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))
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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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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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ISP_LOCKVAL_DECL;
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isp = XS_ISP(xs);
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ISP_LOCK(isp);
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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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result = ispscsicmd(xs);
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if (result != CMD_QUEUED || (xs->flags & SCSI_POLL) == 0) {
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ISP_UNLOCK(isp);
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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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ISP_UNLOCK(isp);
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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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