100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
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/* $NetBSD: mba.c,v 1.2 1996/02/02 18:08:31 mycroft Exp $ */
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/*
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* Copyright (c) 1994 Ludd, University of Lule}, Sweden.
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* All rights reserved.
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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, 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed at Ludd, University of Lule}.
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* 4. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/* All bugs are subject to removal without further notice */
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/* mba.c - main mba routines, 930312/ragge */
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#include "mba.h"
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#include "nexus.h"
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#include <vax/mba/mbavar.h>
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#include <vax/mba/mbareg.h>
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struct mba_ctrl mba_ctrl[NMBA];
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extern mba_0(), mba_1(), mba_2(), mba_3();
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int (*mbaintv[4])() = { mba_0, mba_1, mba_2, mba_3 };
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#if NMBA > 4
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Need to expand the table for more than 4 massbus adaptors
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#endif
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mbainterrupt(mba){
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if(mba_hd[mba].mh_mba->mba_sr&MBA_NED){
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printf("Adresserat icke existerande massbussenhet.\n");
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mba_hd[mba].mh_mba->mba_sr=MBA_NED+MBA_MCPE;
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return;
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}
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printf("Interrupt fr}n massbussadapter %d\n",mba);
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printf("mba_hd[mba]->mba_sr: %x\n",mba_hd[mba].mh_mba->mba_sr);
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}
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/*
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* mbafind() set up interrupt vectors for each found mba and calls
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* config routines for hp disks, tu and mt tapes (currently only hp).
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*/
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mbafind(nexnum,nexaddr){
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struct mba_regs *mbr;
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struct mba_device *mi;
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mba_ctrl[nmba].mba_regs= (struct mba_regs *)nexaddr;
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mbr=&(mba_ctrl[nmba].mba_regs);
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/*
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* Set up interruptvectors and enable interrupt
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*/
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nex_vec_num(14,nexnum)=nex_vec_num(15,nexnum)=
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nex_vec_num(16,nexnum)=nex_vec_num(17,nexnum)=
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(caddr_t)mbaintv[nmba];
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mbr->mba_cr=MBCR_INIT;
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mbr->mba_cr=MBCR_IE;
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/*
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* Loop thru all massbuss devices and check for existance
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*/
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for(i=0;i<8;i++){
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if(!mbr->mba_drv[i].rmds&MBDS_DPR) continue;
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/*
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* Device found; check if generated
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*/
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for(mi = mbdinit; mi->driver; mi++) {
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if(mi->alive) continue; /* Already config'd */
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}
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}
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}
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