390 lines
10 KiB
C
390 lines
10 KiB
C
/*
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* Copyright (c) 1997, 1999 Hellmuth Michaelis. 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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*
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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
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* FOR 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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*---------------------------------------------------------------------------
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*
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* i4b_isic.c - global isic stuff
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* ==============================
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*
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* $Id: i4b_isic.c,v 1.47 1999/04/20 09:34:14 hm Exp $
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*
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* last edit-date: [Sun Feb 14 10:27:20 1999]
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*
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*---------------------------------------------------------------------------*/
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#ifdef __FreeBSD__
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#include "isic.h"
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#include "opt_i4b.h"
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#else
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#define NISIC 1
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#endif
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#if NISIC > 0
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#include <sys/param.h>
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#if defined(__FreeBSD__) && __FreeBSD__ >= 3
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#include <sys/ioccom.h>
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#else
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#include <sys/ioctl.h>
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#endif
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#include <sys/kernel.h>
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#include <sys/systm.h>
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#include <sys/mbuf.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#ifdef __FreeBSD__
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#include <machine/clock.h>
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#include <i386/isa/isa_device.h>
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#else
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#include <sys/device.h>
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#if defined(__NetBSD__) && defined(amiga)
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#include <machine/bus.h>
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#else
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#ifndef __bsdi__
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#include <dev/isa/isavar.h>
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#endif
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#endif
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#endif
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#ifdef __FreeBSD__
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#include <machine/i4b_debug.h>
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#include <machine/i4b_ioctl.h>
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#include <machine/i4b_trace.h>
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#else
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#include <i4b/i4b_debug.h>
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#include <i4b/i4b_ioctl.h>
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#include <i4b/i4b_trace.h>
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#endif
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#include <i4b/layer1/i4b_l1.h>
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#include <i4b/layer1/i4b_ipac.h>
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#include <i4b/layer1/i4b_isac.h>
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#include <i4b/layer1/i4b_hscx.h>
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#include <i4b/include/i4b_l1l2.h>
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#include <i4b/include/i4b_mbuf.h>
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#include <i4b/include/i4b_global.h>
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void isic_settrace(int unit, int val);
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int isic_gettrace(int unit);
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#ifdef __bsdi__
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static int isicmatch(struct device *parent, struct cfdata *cf, void *aux);
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static void isicattach(struct device *parent, struct device *self, void *aux);
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struct cfdriver isiccd =
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{ NULL, "isic", isicmatch, isicattach, DV_IFNET,
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sizeof(struct isic_softc) };
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int isa_isicmatch(struct device *parent, struct cfdata *cf, struct isa_attach_args *);
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int isa_isicattach(struct device *parent, struct device *self, struct isa_attach_args *ia);
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static int
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isicmatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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struct isa_attach_args *ia = (struct isa_attach_args *) aux;
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if (ia->ia_bustype == BUS_PCMCIA) {
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ia->ia_irq = IRQNONE;
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/* return 1; Not yet */
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return 0; /* for now */
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}
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if (ia->ia_bustype == BUS_PNP) {
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/* return isapnp_isicmatch(parent, cf, ia); */
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return 0; /* for now */
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}
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return isa_isicmatch(parent, cf, ia);
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}
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static void
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isicattach(struct device *parent, struct device *self, void *aux)
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{
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struct isa_attach_args *ia = (struct isa_attach_args *) aux;
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struct isic_softc *sc = (struct isic_softc *)self;
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sc->sc_flags = sc->sc_dev.dv_flags;
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isa_isicattach(parent, self, ia);
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isa_establish(&sc->sc_id, &sc->sc_dev);
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sc->sc_ih.ih_fun = isicintr;
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sc->sc_ih.ih_arg = (void *)sc;
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intr_establish(ia->ia_irq, &sc->sc_ih, DV_NET);
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/* Could add a shutdown hook here... */
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}
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#endif
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#ifdef __FreeBSD__
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void isicintr_sc(struct isic_softc *sc);
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#if !(defined(__FreeBSD_version)) || (defined(__FreeBSD_version) && __FreeBSD_version >= 300006)
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void isicintr(int unit);
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#endif
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#else
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/* XXX - hack, going away soon! */
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struct isic_softc *isic_sc[ISIC_MAXUNIT];
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#endif
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/*---------------------------------------------------------------------------*
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* isic - device driver interrupt routine
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*---------------------------------------------------------------------------*/
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#ifdef __FreeBSD__
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void
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isicintr_sc(struct isic_softc *sc)
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{
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isicintr(sc->sc_unit);
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}
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void
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isicintr(int unit)
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{
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register struct isic_softc *sc = &isic_sc[unit];
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#else
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int
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isicintr(void *arg)
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{
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struct isic_softc *sc = arg;
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#endif
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if(sc->sc_ipac == 0) /* HSCX/ISAC interupt routine */
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{
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u_char was_hscx_irq = 0;
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u_char was_isac_irq = 0;
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register u_char hscx_irq_stat;
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register u_char isac_irq_stat;
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for(;;)
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{
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/* get hscx irq status from hscx b ista */
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hscx_irq_stat =
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HSCX_READ(HSCX_CH_B, H_ISTA) & ~HSCX_B_IMASK;
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/* get isac irq status */
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isac_irq_stat = ISAC_READ(I_ISTA);
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/* do as long as there are pending irqs in the chips */
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if(!hscx_irq_stat && !isac_irq_stat)
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break;
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if(hscx_irq_stat & (HSCX_ISTA_RME | HSCX_ISTA_RPF |
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HSCX_ISTA_RSC | HSCX_ISTA_XPR |
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HSCX_ISTA_TIN | HSCX_ISTA_EXB))
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{
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isic_hscx_irq(sc, hscx_irq_stat,
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HSCX_CH_B,
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hscx_irq_stat & HSCX_ISTA_EXB);
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was_hscx_irq = 1;
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}
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if(hscx_irq_stat & (HSCX_ISTA_ICA | HSCX_ISTA_EXA))
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{
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isic_hscx_irq(sc,
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HSCX_READ(HSCX_CH_A, H_ISTA) & ~HSCX_A_IMASK,
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HSCX_CH_A,
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hscx_irq_stat & HSCX_ISTA_EXA);
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was_hscx_irq = 1;
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}
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if(isac_irq_stat)
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{
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isic_isac_irq(sc, isac_irq_stat); /* isac handler */
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was_isac_irq = 1;
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}
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}
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#if !defined(amiga) && !defined(atari) /* XXX should be: #if INTS_ARE_SHARED */
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#ifdef ELSA_QS1ISA
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if(sc->sc_cardtyp != CARD_TYPEP_ELSAQS1ISA)
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{
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#endif
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if((was_hscx_irq == 0) && (was_isac_irq == 0))
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DBGL1(L1_ERROR, "isicintr", ("WARNING: unit %d, No IRQ from HSCX/ISAC!\n", sc->sc_unit));
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#ifdef ELSA_QS1ISA
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}
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#endif
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#endif /* !AMIGA && !ATARI */
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HSCX_WRITE(0, H_MASK, 0xff);
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ISAC_WRITE(I_MASK, 0xff);
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HSCX_WRITE(1, H_MASK, 0xff);
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#ifdef ELSA_QS1ISA
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DELAY(80);
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if(sc->sc_cardtyp == CARD_TYPEP_ELSAQS1ISA)
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if (sc->clearirq)
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{
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sc->clearirq(sc);
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}
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#else
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DELAY(100);
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#endif
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HSCX_WRITE(0, H_MASK, HSCX_A_IMASK);
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ISAC_WRITE(I_MASK, ISAC_IMASK);
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HSCX_WRITE(1, H_MASK, HSCX_B_IMASK);
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#ifndef __FreeBSD__
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return(was_hscx_irq || was_isac_irq);
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#endif
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}
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else /* IPAC interrupt routine */
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{
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register u_char ipac_irq_stat;
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register u_char was_ipac_irq = 0;
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for(;;)
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{
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/* get global irq status */
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ipac_irq_stat = (IPAC_READ(IPAC_ISTA)) & 0x3f;
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/* check hscx a */
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if(ipac_irq_stat & (IPAC_ISTA_ICA | IPAC_ISTA_EXA))
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{
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/* HSCX A interrupt */
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isic_hscx_irq(sc, HSCX_READ(HSCX_CH_A, H_ISTA),
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HSCX_CH_A,
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ipac_irq_stat & IPAC_ISTA_EXA);
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was_ipac_irq = 1;
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}
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if(ipac_irq_stat & (IPAC_ISTA_ICB | IPAC_ISTA_EXB))
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{
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/* HSCX B interrupt */
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isic_hscx_irq(sc, HSCX_READ(HSCX_CH_B, H_ISTA),
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HSCX_CH_B,
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ipac_irq_stat & IPAC_ISTA_EXB);
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was_ipac_irq = 1;
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}
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if(ipac_irq_stat & (IPAC_ISTA_ICD | IPAC_ISTA_EXD))
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{
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/* ISAC interrupt */
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isic_isac_irq(sc, ISAC_READ(I_ISTA));
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was_ipac_irq = 1;
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}
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/* do as long as there are pending irqs in the chip */
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if(!ipac_irq_stat)
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break;
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}
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if(was_ipac_irq == 0)
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DBGL1(L1_ERROR, "isicintr", ("WARNING: unit %d, No IRQ from IPAC!\n", sc->sc_unit));
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IPAC_WRITE(IPAC_MASK, 0xff);
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DELAY(50);
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IPAC_WRITE(IPAC_MASK, 0xc0);
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#ifndef __FreeBSD__
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return(was_ipac_irq);
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#endif
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}
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}
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/*---------------------------------------------------------------------------*
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* isic_settrace
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*---------------------------------------------------------------------------*/
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void
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isic_settrace(int unit, int val)
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{
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#ifdef __FreeBSD__
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struct isic_softc *sc = &isic_sc[unit];
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#else
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struct isic_softc *sc = isic_find_sc(unit);
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#endif
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sc->sc_trace = val;
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}
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/*---------------------------------------------------------------------------*
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* isic_gettrace
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*---------------------------------------------------------------------------*/
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int
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isic_gettrace(int unit)
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{
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#ifdef __FreeBSD__
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struct isic_softc *sc = &isic_sc[unit];
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#else
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struct isic_softc *sc = isic_find_sc(unit);
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#endif
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return(sc->sc_trace);
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}
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/*---------------------------------------------------------------------------*
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* isic_recovery - try to recover from irq lockup
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*---------------------------------------------------------------------------*/
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void
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isic_recover(struct isic_softc *sc)
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{
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u_char byte;
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/* get hscx irq status from hscx b ista */
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byte = HSCX_READ(HSCX_CH_B, H_ISTA);
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DBGL1(L1_ERROR, "isic_recover", ("HSCX B: ISTA = 0x%x\n", byte));
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if(byte & HSCX_ISTA_ICA)
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DBGL1(L1_ERROR, "isic_recover", ("HSCX A: ISTA = 0x%x\n", (u_char)HSCX_READ(HSCX_CH_A, H_ISTA)));
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if(byte & HSCX_ISTA_EXB)
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DBGL1(L1_ERROR, "isic_recover", ("HSCX B: EXIR = 0x%x\n", (u_char)HSCX_READ(HSCX_CH_B, H_EXIR)));
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if(byte & HSCX_ISTA_EXA)
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DBGL1(L1_ERROR, "isic_recover", ("HSCX A: EXIR = 0x%x\n", (u_char)HSCX_READ(HSCX_CH_A, H_EXIR)));
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/* get isac irq status */
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byte = ISAC_READ(I_ISTA);
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DBGL1(L1_ERROR, "isic_recover", (" ISAC: ISTA = 0x%x\n", byte));
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if(byte & ISAC_ISTA_EXI)
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DBGL1(L1_ERROR, "isic_recover", (" ISAC: EXIR = 0x%x\n", (u_char)ISAC_READ(I_EXIR)));
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if(byte & ISAC_ISTA_CISQ)
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{
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byte = ISAC_READ(I_CIRR);
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DBGL1(L1_ERROR, "isic_recover", (" ISAC: CISQ = 0x%x\n", byte));
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if(byte & ISAC_CIRR_SQC)
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DBGL1(L1_ERROR, "isic_recover", (" ISAC: SQRR = 0x%x\n", (u_char)ISAC_READ(I_SQRR)));
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}
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DBGL1(L1_ERROR, "isic_recover", ("HSCX B: IMASK = 0x%x\n", HSCX_B_IMASK));
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DBGL1(L1_ERROR, "isic_recover", ("HSCX A: IMASK = 0x%x\n", HSCX_A_IMASK));
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HSCX_WRITE(0, H_MASK, 0xff);
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HSCX_WRITE(1, H_MASK, 0xff);
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DELAY(100);
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HSCX_WRITE(0, H_MASK, HSCX_A_IMASK);
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HSCX_WRITE(1, H_MASK, HSCX_B_IMASK);
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DELAY(100);
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DBGL1(L1_ERROR, "isic_recover", (" ISAC: IMASK = 0x%x\n", ISAC_IMASK));
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ISAC_WRITE(I_MASK, 0xff);
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DELAY(100);
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ISAC_WRITE(I_MASK, ISAC_IMASK);
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}
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#endif /* NISIC > 0 */
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