126 lines
3.7 KiB
C
126 lines
3.7 KiB
C
/* $FreeBSD$ */
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/* $Id: isp_freebsd.c,v 1.4 1998/04/15 17:36:08 mjacob Exp $ */
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/*
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* Platform (FreeBSD) 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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#include <dev/isp/isp_freebsd.h>
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static void ispminphys __P((struct buf *));
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static u_int32_t isp_adapter_info __P((int));
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static struct scsi_adapter isp_switch = {
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ispscsicmd, ispminphys, 0, 0, isp_adapter_info, "isp", { 0, 0 }
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};
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static struct scsi_device isp_dev = {
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NULL, NULL, NULL, NULL, "isp", 0, { 0, 0 }
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};
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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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struct scsibus_data *scbus;
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scbus = scsi_alloc_bus();
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if(!scbus) {
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return;
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}
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isp->isp_state = ISP_RUNSTATE;
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isp->isp_osinfo._link.adapter_unit = isp->isp_osinfo.unit;
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isp->isp_osinfo._link.adapter_softc = isp;
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isp->isp_osinfo._link.adapter = &isp_switch;
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isp->isp_osinfo._link.device = &isp_dev;
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isp->isp_osinfo._link.flags = 0;
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if (isp->isp_type & ISP_HA_FC) {
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isp->isp_osinfo._link.adapter_targ = 0xff;
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#if 0
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isp->isp_osinfo._link.openings =
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RQUEST_QUEUE_LEN(isp) / (MAX_FC_TARG-1);
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#endif
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scbus->maxtarg = MAX_FC_TARG-1;
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} else {
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isp->isp_osinfo._link.adapter_targ =
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((sdparam *)isp->isp_param)->isp_initiator_id;
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#if 0
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isp->isp_osinfo._link.openings =
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RQUEST_QUEUE_LEN(isp) / (MAX_TARGETS-1);
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#endif
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scbus->maxtarg = MAX_TARGETS-1;
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}
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/*
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* Prepare the scsibus_data area for the upperlevel scsi code.
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*/
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scbus->adapter_link = &isp->isp_osinfo._link;
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/*
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* ask the adapter what subunits are present
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*/
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scsi_attachdevs(scbus);
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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 u_int32_t
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isp_adapter_info(unit)
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int unit;
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{
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/*
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* XXX: FIND ISP BASED UPON UNIT AND GET REAL QUEUE LIMIT FROM THAT
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*/
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return (2);
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}
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