freebsd-skq/sys/i4b/layer1/i4b_isic.c
1999-03-07 16:08:20 +00:00

390 lines
10 KiB
C

/*
* Copyright (c) 1997, 1999 Hellmuth Michaelis. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*---------------------------------------------------------------------------
*
* i4b_isic.c - global isic stuff
* ==============================
*
* $Id: i4b_isic.c,v 1.46 1999/02/14 19:51:02 hm Exp $
*
* last edit-date: [Sun Feb 14 10:27:20 1999]
*
*---------------------------------------------------------------------------*/
#ifdef __FreeBSD__
#include "isic.h"
#include "opt_i4b.h"
#else
#define NISIC 1
#endif
#if NISIC > 0
#include <sys/param.h>
#if defined(__FreeBSD__) && __FreeBSD__ >= 3
#include <sys/ioccom.h>
#else
#include <sys/ioctl.h>
#endif
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <net/if.h>
#ifdef __FreeBSD__
#include <machine/clock.h>
#include <i386/isa/isa_device.h>
#else
#include <sys/device.h>
#if defined(__NetBSD__) && defined(amiga)
#include <machine/bus.h>
#else
#ifndef __bsdi__
#include <dev/isa/isavar.h>
#endif
#endif
#endif
#ifdef __FreeBSD__
#include <machine/i4b_debug.h>
#include <machine/i4b_ioctl.h>
#include <machine/i4b_trace.h>
#else
#include <i4b/i4b_debug.h>
#include <i4b/i4b_ioctl.h>
#include <i4b/i4b_trace.h>
#endif
#include <i4b/layer1/i4b_l1.h>
#include <i4b/layer1/i4b_ipac.h>
#include <i4b/layer1/i4b_isac.h>
#include <i4b/layer1/i4b_hscx.h>
#include <i4b/include/i4b_l1l2.h>
#include <i4b/include/i4b_mbuf.h>
#include <i4b/include/i4b_global.h>
void isic_settrace(int unit, int val);
int isic_gettrace(int unit);
#ifdef __bsdi__
static int isicmatch(struct device *parent, struct cfdata *cf, void *aux);
static void isicattach(struct device *parent, struct device *self, void *aux);
struct cfdriver isiccd =
{ NULL, "isic", isicmatch, isicattach, DV_IFNET,
sizeof(struct isic_softc) };
int isa_isicmatch(struct device *parent, struct cfdata *cf, struct isa_attach_args *);
int isa_isicattach(struct device *parent, struct device *self, struct isa_attach_args *ia);
static int
isicmatch(struct device *parent, struct cfdata *cf, void *aux)
{
struct isa_attach_args *ia = (struct isa_attach_args *) aux;
if (ia->ia_bustype == BUS_PCMCIA) {
ia->ia_irq = IRQNONE;
/* return 1; Not yet */
return 0; /* for now */
}
if (ia->ia_bustype == BUS_PNP) {
/* return isapnp_isicmatch(parent, cf, ia); */
return 0; /* for now */
}
return isa_isicmatch(parent, cf, ia);
}
static void
isicattach(struct device *parent, struct device *self, void *aux)
{
struct isa_attach_args *ia = (struct isa_attach_args *) aux;
struct isic_softc *sc = (struct isic_softc *)self;
sc->sc_flags = sc->sc_dev.dv_flags;
isa_isicattach(parent, self, ia);
isa_establish(&sc->sc_id, &sc->sc_dev);
sc->sc_ih.ih_fun = isicintr;
sc->sc_ih.ih_arg = (void *)sc;
intr_establish(ia->ia_irq, &sc->sc_ih, DV_NET);
/* Could add a shutdown hook here... */
}
#endif
#ifdef __FreeBSD__
void isicintr_sc(struct isic_softc *sc);
#if !(defined(__FreeBSD_version)) || (defined(__FreeBSD_version) && __FreeBSD_version >= 300006)
void isicintr(int unit);
#endif
#else
/* XXX - hack, going away soon! */
struct isic_softc *isic_sc[ISIC_MAXUNIT];
#endif
/*---------------------------------------------------------------------------*
* isic - device driver interrupt routine
*---------------------------------------------------------------------------*/
#ifdef __FreeBSD__
void
isicintr_sc(struct isic_softc *sc)
{
isicintr(sc->sc_unit);
}
void
isicintr(int unit)
{
register struct isic_softc *sc = &isic_sc[unit];
#else
int
isicintr(void *arg)
{
struct isic_softc *sc = arg;
#endif
if(sc->sc_ipac == 0) /* HSCX/ISAC interupt routine */
{
u_char was_hscx_irq = 0;
u_char was_isac_irq = 0;
register u_char hscx_irq_stat;
register u_char isac_irq_stat;
for(;;)
{
/* get hscx irq status from hscx b ista */
hscx_irq_stat =
HSCX_READ(HSCX_CH_B, H_ISTA) & ~HSCX_B_IMASK;
/* get isac irq status */
isac_irq_stat = ISAC_READ(I_ISTA);
/* do as long as there are pending irqs in the chips */
if(!hscx_irq_stat && !isac_irq_stat)
break;
if(hscx_irq_stat & (HSCX_ISTA_RME | HSCX_ISTA_RPF |
HSCX_ISTA_RSC | HSCX_ISTA_XPR |
HSCX_ISTA_TIN | HSCX_ISTA_EXB))
{
isic_hscx_irq(sc, hscx_irq_stat,
HSCX_CH_B,
hscx_irq_stat & HSCX_ISTA_EXB);
was_hscx_irq = 1;
}
if(hscx_irq_stat & (HSCX_ISTA_ICA | HSCX_ISTA_EXA))
{
isic_hscx_irq(sc,
HSCX_READ(HSCX_CH_A, H_ISTA) & ~HSCX_A_IMASK,
HSCX_CH_A,
hscx_irq_stat & HSCX_ISTA_EXA);
was_hscx_irq = 1;
}
if(isac_irq_stat)
{
isic_isac_irq(sc, isac_irq_stat); /* isac handler */
was_isac_irq = 1;
}
}
#ifndef amiga /* XXX should be: #if INTERUPTS_ARE_SHARED */
#ifdef ELSA_QS1ISA
if(sc->sc_cardtyp != CARD_TYPEP_ELSAQS1ISA)
{
#endif
if((was_hscx_irq == 0) && (was_isac_irq == 0))
DBGL1(L1_ERROR, "isicintr", ("WARNING: unit %d, No IRQ from HSCX/ISAC!\n", sc->sc_unit));
#ifdef ELSA_QS1ISA
}
#endif
#endif /* AMIGA */
HSCX_WRITE(0, H_MASK, 0xff);
ISAC_WRITE(I_MASK, 0xff);
HSCX_WRITE(1, H_MASK, 0xff);
#ifdef ELSA_QS1ISA
DELAY(80);
if(sc->sc_cardtyp == CARD_TYPEP_ELSAQS1ISA)
if (sc->clearirq)
{
sc->clearirq(sc);
}
#else
DELAY(100);
#endif
HSCX_WRITE(0, H_MASK, HSCX_A_IMASK);
ISAC_WRITE(I_MASK, ISAC_IMASK);
HSCX_WRITE(1, H_MASK, HSCX_B_IMASK);
#ifndef __FreeBSD__
return(was_hscx_irq || was_isac_irq);
#endif
}
else /* IPAC interrupt routine */
{
register u_char ipac_irq_stat;
register u_char was_ipac_irq = 0;
for(;;)
{
/* get global irq status */
ipac_irq_stat = (IPAC_READ(IPAC_ISTA)) & 0x3f;
/* check hscx a */
if(ipac_irq_stat & (IPAC_ISTA_ICA | IPAC_ISTA_EXA))
{
/* HSCX A interrupt */
isic_hscx_irq(sc, HSCX_READ(HSCX_CH_A, H_ISTA),
HSCX_CH_A,
ipac_irq_stat & IPAC_ISTA_EXA);
was_ipac_irq = 1;
}
if(ipac_irq_stat & (IPAC_ISTA_ICB | IPAC_ISTA_EXB))
{
/* HSCX B interrupt */
isic_hscx_irq(sc, HSCX_READ(HSCX_CH_B, H_ISTA),
HSCX_CH_B,
ipac_irq_stat & IPAC_ISTA_EXB);
was_ipac_irq = 1;
}
if(ipac_irq_stat & (IPAC_ISTA_ICD | IPAC_ISTA_EXD))
{
/* ISAC interrupt */
isic_isac_irq(sc, ISAC_READ(I_ISTA));
was_ipac_irq = 1;
}
/* do as long as there are pending irqs in the chip */
if(!ipac_irq_stat)
break;
}
if(was_ipac_irq == 0)
DBGL1(L1_ERROR, "isicintr", ("WARNING: unit %d, No IRQ from IPAC!\n", sc->sc_unit));
IPAC_WRITE(IPAC_MASK, 0xff);
DELAY(50);
IPAC_WRITE(IPAC_MASK, 0xc0);
#ifndef __FreeBSD__
return(was_ipac_irq);
#endif
}
}
/*---------------------------------------------------------------------------*
* isic_settrace
*---------------------------------------------------------------------------*/
void
isic_settrace(int unit, int val)
{
#ifdef __FreeBSD__
struct isic_softc *sc = &isic_sc[unit];
#else
struct isic_softc *sc = isic_find_sc(unit);
#endif
sc->sc_trace = val;
}
/*---------------------------------------------------------------------------*
* isic_gettrace
*---------------------------------------------------------------------------*/
int
isic_gettrace(int unit)
{
#ifdef __FreeBSD__
struct isic_softc *sc = &isic_sc[unit];
#else
struct isic_softc *sc = isic_find_sc(unit);
#endif
return(sc->sc_trace);
}
/*---------------------------------------------------------------------------*
* isic_recovery - try to recover from irq lockup
*---------------------------------------------------------------------------*/
void
isic_recover(struct isic_softc *sc)
{
u_char byte;
/* get hscx irq status from hscx b ista */
byte = HSCX_READ(HSCX_CH_B, H_ISTA);
DBGL1(L1_ERROR, "isic_recover", ("HSCX B: ISTA = 0x%x\n", byte));
if(byte & HSCX_ISTA_ICA)
DBGL1(L1_ERROR, "isic_recover", ("HSCX A: ISTA = 0x%x\n", (u_char)HSCX_READ(HSCX_CH_A, H_ISTA)));
if(byte & HSCX_ISTA_EXB)
DBGL1(L1_ERROR, "isic_recover", ("HSCX B: EXIR = 0x%x\n", (u_char)HSCX_READ(HSCX_CH_B, H_EXIR)));
if(byte & HSCX_ISTA_EXA)
DBGL1(L1_ERROR, "isic_recover", ("HSCX A: EXIR = 0x%x\n", (u_char)HSCX_READ(HSCX_CH_A, H_EXIR)));
/* get isac irq status */
byte = ISAC_READ(I_ISTA);
DBGL1(L1_ERROR, "isic_recover", (" ISAC: ISTA = 0x%x\n", byte));
if(byte & ISAC_ISTA_EXI)
DBGL1(L1_ERROR, "isic_recover", (" ISAC: EXIR = 0x%x\n", (u_char)ISAC_READ(I_EXIR)));
if(byte & ISAC_ISTA_CISQ)
{
byte = ISAC_READ(I_CIRR);
DBGL1(L1_ERROR, "isic_recover", (" ISAC: CISQ = 0x%x\n", byte));
if(byte & ISAC_CIRR_SQC)
DBGL1(L1_ERROR, "isic_recover", (" ISAC: SQRR = 0x%x\n", (u_char)ISAC_READ(I_SQRR)));
}
DBGL1(L1_ERROR, "isic_recover", ("HSCX B: IMASK = 0x%x\n", HSCX_B_IMASK));
DBGL1(L1_ERROR, "isic_recover", ("HSCX A: IMASK = 0x%x\n", HSCX_A_IMASK));
HSCX_WRITE(0, H_MASK, 0xff);
HSCX_WRITE(1, H_MASK, 0xff);
DELAY(100);
HSCX_WRITE(0, H_MASK, HSCX_A_IMASK);
HSCX_WRITE(1, H_MASK, HSCX_B_IMASK);
DELAY(100);
DBGL1(L1_ERROR, "isic_recover", (" ISAC: IMASK = 0x%x\n", ISAC_IMASK));
ISAC_WRITE(I_MASK, 0xff);
DELAY(100);
ISAC_WRITE(I_MASK, ISAC_IMASK);
}
#endif /* NISIC > 0 */