248 lines
6.6 KiB
C
248 lines
6.6 KiB
C
/* $NetBSD: isa.c,v 1.96 1997/07/17 00:58:49 jtk Exp $ */
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/*-
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* Copyright (c) 1993, 1994 Charles Hannum. 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 by Charles Hannum.
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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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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/conf.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <machine/intr.h>
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#include <dev/isa/isareg.h>
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#include <dev/isa/isavar.h>
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#include <dev/isa/isadmareg.h>
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#ifdef __BROKEN_INDIRECT_CONFIG
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int isamatch __P((struct device *, void *, void *));
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#else
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int isamatch __P((struct device *, struct cfdata *, void *));
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#endif
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void isaattach __P((struct device *, struct device *, void *));
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int isaprint __P((void *, const char *));
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struct cfattach isa_ca = {
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sizeof(struct isa_softc), isamatch, isaattach
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};
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struct cfdriver isa_cd = {
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#ifdef __BROKEN_INDIRECT_CONFIG
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NULL, "isa", DV_DULL, 1
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#else
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NULL, "isa", DV_DULL
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#endif
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};
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#ifdef __BROKEN_INDIRECT_CONFIG
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void isascan __P((struct device *, void *));
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#else
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int isasearch __P((struct device *, struct cfdata *, void *));
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#endif
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int
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#ifdef __BROKEN_INDIRECT_CONFIG
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isamatch(parent, match, aux)
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#else
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isamatch(parent, cf, aux)
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#endif
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struct device *parent;
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#ifdef __BROKEN_INDIRECT_CONFIG
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void *match;
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#else
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struct cfdata *cf;
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#endif
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void *aux;
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{
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#ifdef __BROKEN_INDIRECT_CONFIG
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struct cfdata *cf = match;
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#endif
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struct isabus_attach_args *iba = aux;
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if (strcmp(iba->iba_busname, cf->cf_driver->cd_name))
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return (0);
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/* XXX check other indicators */
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return (1);
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}
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void
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isaattach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct isa_softc *sc = (struct isa_softc *)self;
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struct isabus_attach_args *iba = aux;
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isa_attach_hook(parent, self, iba);
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printf("\n");
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sc->sc_iot = iba->iba_iot;
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sc->sc_memt = iba->iba_memt;
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sc->sc_dmat = iba->iba_dmat;
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sc->sc_ic = iba->iba_ic;
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/*
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* Map the registers used by the ISA DMA controller.
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*/
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if (bus_space_map(sc->sc_iot, IO_DMA1, DMA1_IOSIZE, 0, &sc->sc_dma1h))
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panic("isaattach: can't map DMA controller #1");
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if (bus_space_map(sc->sc_iot, IO_DMA2, DMA2_IOSIZE, 0, &sc->sc_dma2h))
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panic("isaattach: can't map DMA controller #2");
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if (bus_space_map(sc->sc_iot, IO_DMAPG, 0xf, 0, &sc->sc_dmapgh))
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panic("isaattach: can't map DMA page registers");
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/*
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* Map port 0x84, which causes a 1.25us delay when read.
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* We do this now, since several drivers need it.
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*/
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if (bus_space_subregion(sc->sc_iot, sc->sc_dmapgh, 0x04, 1,
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&sc->sc_delaybah))
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panic("isaattach: can't map `delay port'"); /* XXX */
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TAILQ_INIT(&sc->sc_subdevs);
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#ifdef __BROKEN_INDIRECT_CONFIG
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config_scan(isascan, self);
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#else
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config_search(isasearch, self, NULL);
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#endif
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}
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int
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isaprint(aux, isa)
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void *aux;
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const char *isa;
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{
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struct isa_attach_args *ia = aux;
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if (ia->ia_iosize)
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printf(" port 0x%x", ia->ia_iobase);
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if (ia->ia_iosize > 1)
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printf("-0x%x", ia->ia_iobase + ia->ia_iosize - 1);
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if (ia->ia_msize)
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printf(" iomem 0x%x", ia->ia_maddr);
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if (ia->ia_msize > 1)
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printf("-0x%x", ia->ia_maddr + ia->ia_msize - 1);
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if (ia->ia_irq != IRQUNK)
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printf(" irq %d", ia->ia_irq);
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if (ia->ia_drq != DRQUNK)
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printf(" drq %d", ia->ia_drq);
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return (UNCONF);
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}
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#ifdef __BROKEN_INDIRECT_CONFIG
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void
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isascan(parent, match)
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struct device *parent;
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void *match;
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{
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struct isa_softc *sc = (struct isa_softc *)parent;
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struct device *dev = match;
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struct cfdata *cf = dev->dv_cfdata;
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struct isa_attach_args ia;
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#if defined(__i386__)
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if (cf->cf_fstate == FSTATE_STAR)
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panic("clone devices not supported on ISA bus");
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#endif
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ia.ia_iot = sc->sc_iot;
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ia.ia_memt = sc->sc_memt;
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ia.ia_dmat = sc->sc_dmat;
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ia.ia_ic = sc->sc_ic;
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ia.ia_iobase = cf->cf_iobase;
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ia.ia_iosize = 0x666;/* cf->cf_iosize; */
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ia.ia_maddr = cf->cf_maddr;
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ia.ia_msize = cf->cf_msize;
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ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq;
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ia.ia_drq = cf->cf_drq;
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ia.ia_delaybah = sc->sc_delaybah;
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if ((*cf->cf_attach->ca_match)(parent, match, &ia) > 0)
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config_attach(parent, match, &ia, isaprint);
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else
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free(dev, M_DEVBUF);
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}
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#else /* !__BROKEN_INDIRECT_CONFIG */
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int
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isasearch(parent, cf, aux)
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struct device *parent;
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struct cfdata *cf;
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void *aux;
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{
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struct isa_softc *sc = (struct isa_softc *)parent;
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struct isa_attach_args ia;
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int tryagain;
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do {
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ia.ia_iot = sc->sc_iot;
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ia.ia_memt = sc->sc_memt;
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ia.ia_dmat = sc->sc_dmat;
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ia.ia_ic = sc->sc_ic;
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ia.ia_iobase = cf->cf_iobase;
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ia.ia_iosize = 0x666; /* cf->cf_iosize; */
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ia.ia_maddr = cf->cf_maddr;
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ia.ia_msize = cf->cf_msize;
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ia.ia_irq = cf->cf_irq == 2 ? 9 : cf->cf_irq;
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ia.ia_drq = cf->cf_drq;
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ia.ia_delaybah = sc->sc_delaybah;
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tryagain = 0;
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if ((*cf->cf_attach->ca_match)(parent, cf, &ia) > 0) {
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config_attach(parent, cf, &ia, isaprint);
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tryagain = (cf->cf_fstate == FSTATE_STAR);
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}
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} while (tryagain);
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return (0);
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}
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#endif /* __BROKEN_INDIRECT_CONFIG */
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char *
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isa_intr_typename(type)
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int type;
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{
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switch (type) {
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case IST_NONE :
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return ("none");
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case IST_PULSE:
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return ("pulsed");
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case IST_EDGE:
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return ("edge-triggered");
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case IST_LEVEL:
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return ("level-triggered");
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default:
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panic("isa_intr_typename: invalid type %d", type);
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}
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}
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