NetBSD/sys/dev/isa/isa.c

/*	$NetBSD: isa.c,v 1.115 2002/10/02 03:10:48 thorpej Exp $	*/

/*-
 * Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Charles M. Hannum; by Jason R. Thorpe of Wasabi Systems, Inc.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *        This product includes software developed by the NetBSD
 *        Foundation, Inc. and its contributors.
 * 4. Neither the name of The NetBSD Foundation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: isa.c,v 1.115 2002/10/02 03:10:48 thorpej Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/device.h>

#include <machine/intr.h>

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/isa/isadmareg.h>

#include "isadma.h"

#include "isapnp.h"
#if NISAPNP > 0
#include <dev/isapnp/isapnpreg.h>
#include <dev/isapnp/isapnpvar.h>
#endif

int	isamatch(struct device *, struct cfdata *, void *);
void	isaattach(struct device *, struct device *, void *);
int	isaprint(void *, const char *);

CFATTACH_DECL(isa, sizeof(struct isa_softc),
    isamatch, isaattach, NULL, NULL);

void	isa_attach_knowndevs(struct isa_softc *);
void	isa_free_knowndevs(struct isa_softc *);

int	isasubmatch(struct device *, struct cfdata *, void *);
int	isasearch(struct device *, struct cfdata *, void *);

int
isamatch(struct device *parent, struct cfdata *cf, void *aux)
{
	struct isabus_attach_args *iba = aux;

	if (strcmp(iba->iba_busname, cf->cf_name))
		return (0);

	/* XXX check other indicators */

        return (1);
}

void
isaattach(struct device *parent, struct device *self, void *aux)
{
	struct isa_softc *sc = (struct isa_softc *)self;
	struct isabus_attach_args *iba = aux;

	TAILQ_INIT(&sc->sc_knowndevs);
	sc->sc_dynamicdevs = 0;

	isa_attach_hook(parent, self, iba);
	printf("\n");

	/* XXX Add code to fetch known-devices. */

	sc->sc_iot = iba->iba_iot;
	sc->sc_memt = iba->iba_memt;
	sc->sc_dmat = iba->iba_dmat;
	sc->sc_ic = iba->iba_ic;

#if NISAPNP > 0
	/*
	 * Reset isapnp cards that the bios configured for us
	 */
	isapnp_isa_attach_hook(sc);
#endif

#if NISADMA > 0
	/*
	 * Initialize our DMA state.
	 */
	isa_dmainit(sc->sc_ic, sc->sc_iot, sc->sc_dmat, self);
#endif

	/* Attach all direct-config children. */
	isa_attach_knowndevs(sc);

	/*
	 * If we don't support dynamic hello/goodbye of devices,
	 * then free the knowndevs info now.
	 */
	if (sc->sc_dynamicdevs == 0)
		isa_free_knowndevs(sc);

	/* Attach all indrect-config children. */
	config_search(isasearch, self, NULL);
}

void
isa_attach_knowndevs(struct isa_softc *sc)
{
	struct isa_attach_args ia;
	struct isa_knowndev *ik;

	if (TAILQ_EMPTY(&sc->sc_knowndevs))
		return;

	TAILQ_FOREACH(ik, &sc->sc_knowndevs, ik_list) {
		if (ik->ik_claimed != NULL)
			continue;

		ia.ia_iot = sc->sc_iot;
		ia.ia_memt = sc->sc_memt;
		ia.ia_dmat = sc->sc_dmat;
		ia.ia_ic = sc->sc_ic;

		ia.ia_pnpname = ik->ik_pnpname;
		ia.ia_pnpcompatnames = ik->ik_pnpcompatnames;

		ia.ia_io = ik->ik_io;
		ia.ia_nio = ik->ik_nio;

		ia.ia_iomem = ik->ik_iomem;
		ia.ia_niomem = ik->ik_niomem;

		ia.ia_irq = ik->ik_irq;
		ia.ia_nirq = ik->ik_nirq;

		ia.ia_drq = ik->ik_drq;
		ia.ia_ndrq = ik->ik_ndrq;

		ia.ia_aux = NULL;

		ik->ik_claimed = config_found_sm(&sc->sc_dev, &ia,
		    isaprint, isasubmatch);
	}
}

void
isa_free_knowndevs(struct isa_softc *sc)
{
	struct isa_knowndev *ik;
	struct isa_pnpname *ipn;

#define	FREEIT(x)	if (x != NULL) free(x, M_DEVBUF)

	while ((ik = TAILQ_FIRST(&sc->sc_knowndevs)) != NULL) {
		TAILQ_REMOVE(&sc->sc_knowndevs, ik, ik_list);
		FREEIT(ik->ik_pnpname);
		while ((ipn = ik->ik_pnpcompatnames) != NULL) {
			ik->ik_pnpcompatnames = ipn->ipn_next;
			free(ipn->ipn_name, M_DEVBUF);
			free(ipn, M_DEVBUF);
		}
		FREEIT(ik->ik_io);
		FREEIT(ik->ik_iomem);
		FREEIT(ik->ik_irq);
		FREEIT(ik->ik_drq);
		free(ik, M_DEVBUF);
	}

#undef FREEIT
}

int
isasubmatch(struct device *parent, struct cfdata *cf, void *aux)
{
	struct isa_attach_args *ia = aux;
	int i;

	if (ia->ia_nio == 0) {
		if (cf->cf_iobase != ISACF_PORT_DEFAULT)
			return (0);
	} else {
		if (cf->cf_iobase != ISACF_PORT_DEFAULT &&
		    cf->cf_iobase != ia->ia_io[0].ir_addr)
			return (0);
	}

	if (ia->ia_niomem == 0) {
		if (cf->cf_maddr != ISACF_IOMEM_DEFAULT)
			return (0);
	} else {
		if (cf->cf_maddr != ISACF_IOMEM_DEFAULT &&
		    cf->cf_maddr != ia->ia_iomem[0].ir_addr)
			return (0);
	}

	if (ia->ia_nirq == 0) {
		if (cf->cf_irq != ISACF_IRQ_DEFAULT)
			return (0);
	} else {
		if (cf->cf_irq != ISACF_IRQ_DEFAULT &&
		    cf->cf_irq != ia->ia_irq[0].ir_irq)
			return (0);
	}

	if (ia->ia_ndrq == 0) {
		if (cf->cf_drq != ISACF_DRQ_DEFAULT)
			return (0);
		if (cf->cf_drq2 != ISACF_DRQ_DEFAULT)
			return (0);
	} else {
		for (i = 0; i < 2; i++) {
			if (i == ia->ia_ndrq)
				break;
			if (cf->cf_loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT &&
			    cf->cf_loc[ISACF_DRQ + i] != ia->ia_drq[i].ir_drq)
				return (0);
		}
		for (; i < 2; i++) {
			if (cf->cf_loc[ISACF_DRQ + i] != ISACF_DRQ_DEFAULT)
				return (0);
		}
	}

	return (config_match(parent, cf, aux));
}

int
isaprint(void *aux, const char *isa)
{
	struct isa_attach_args *ia = aux;
	const char *sep;
	int i;

	/*
	 * This block of code only fires if we have a direct-config'd
	 * device for which there is no driver match.
	 */
	if (isa != NULL) {
		struct isa_pnpname *ipn;

		if (ia->ia_pnpname != NULL)
			printf("%s", ia->ia_pnpname);
		if ((ipn = ia->ia_pnpcompatnames) != NULL) {
			printf(" (");	/* ) */
			for (sep = ""; ipn != NULL;
			     ipn = ipn->ipn_next, sep = " ") {
				printf("%s%s", sep, ipn->ipn_name);
			}
	/* ( */		printf(")");
		}
		printf(" at %s", isa);
	}

	if (ia->ia_nio) {
		sep = "";
		printf(" port ");
		for (i = 0; i < ia->ia_nio; i++) {
			if (ia->ia_io[i].ir_size == 0)
				continue;
			printf("%s0x%x", sep, ia->ia_io[i].ir_addr);
			if (ia->ia_io[i].ir_size > 1)
				printf("-0x%x", ia->ia_io[i].ir_addr +
				    ia->ia_io[i].ir_size - 1);
			sep = ",";
		}
	}

	if (ia->ia_niomem) {
		sep = "";
		printf(" iomem ");
		for (i = 0; i < ia->ia_niomem; i++) {
			if (ia->ia_iomem[i].ir_size == 0)
				continue;
			printf("%s0x%x", sep, ia->ia_iomem[i].ir_addr);
			if (ia->ia_iomem[i].ir_size > 1)
				printf("-0x%x", ia->ia_iomem[i].ir_addr +
				    ia->ia_iomem[i].ir_size - 1);
			sep = ",";
		}
	}

	if (ia->ia_nirq) {
		sep = "";
		printf(" irq ");
		for (i = 0; i < ia->ia_nirq; i++) {
			if (ia->ia_irq[i].ir_irq == ISACF_IRQ_DEFAULT)
				continue;
			printf("%s%d", sep, ia->ia_irq[i].ir_irq);
			sep = ",";
		}
	}

	if (ia->ia_ndrq) {
		sep = "";
		printf(" drq ");
		for (i = 0; i < ia->ia_ndrq; i++) {
			if (ia->ia_drq[i].ir_drq == ISACF_DRQ_DEFAULT)
				continue;
			printf("%s%d", sep, ia->ia_drq[i].ir_drq);
			sep = ",";
		}
	}

	return (UNCONF);
}

int
isasearch(struct device *parent, struct cfdata *cf, void *aux)
{
	struct isa_io res_io[1];
	struct isa_iomem res_mem[1];
	struct isa_irq res_irq[1];
	struct isa_drq res_drq[2];
	struct isa_softc *sc = (struct isa_softc *)parent;
	struct isa_attach_args ia;
	int tryagain;

	do {
		ia.ia_pnpname = NULL;
		ia.ia_pnpcompatnames = NULL;

		res_io[0].ir_addr = cf->cf_loc[ISACF_PORT];
		res_io[0].ir_size = 0;

		res_mem[0].ir_addr = cf->cf_loc[ISACF_IOMEM];
		res_mem[0].ir_size = cf->cf_loc[ISACF_IOSIZ];

		res_irq[0].ir_irq =
		    cf->cf_loc[ISACF_IRQ] == 2 ? 9 : cf->cf_loc[ISACF_IRQ];

		res_drq[0].ir_drq = cf->cf_loc[ISACF_DRQ];
		res_drq[1].ir_drq = cf->cf_loc[ISACF_DRQ2];

		ia.ia_iot = sc->sc_iot;
		ia.ia_memt = sc->sc_memt;
		ia.ia_dmat = sc->sc_dmat;
		ia.ia_ic = sc->sc_ic;

		ia.ia_io = res_io;
		ia.ia_nio = 1;

		ia.ia_iomem = res_mem;
		ia.ia_niomem = 1;

		ia.ia_irq = res_irq;
		ia.ia_nirq = 1;

		ia.ia_drq = res_drq;
		ia.ia_ndrq = 2;

		tryagain = 0;
		if (config_match(parent, cf, &ia) > 0) {
			config_attach(parent, cf, &ia, isaprint);
			tryagain = (cf->cf_fstate == FSTATE_STAR);
		}
	} while (tryagain);

	return (0);
}

char *
isa_intr_typename(int type)
{

	switch (type) {
        case IST_NONE :
		return ("none");
        case IST_PULSE:
		return ("pulsed");
        case IST_EDGE:
		return ("edge-triggered");
        case IST_LEVEL:
		return ("level-triggered");
	default:
		panic("isa_intr_typename: invalid type %d", type);
	}
}