Return to irongate.c CVS log

Up to [cvs.NetBSD.org] / src / sys / arch / alpha / pci

Phase out the use of a string as first "attach args" member to control
which bustype should be attached with a specific call to config_found()
(from a "mainbus" or a bus bridge).
Do it for isa/eisa/mca and pci/agp for now. These buses all attach to
an mi interface attribute "isabus", "eisabus" etc., and the autoconf
framework now allows to specify an interface attribute on config_found()
and config_search(), which limits the search of matching config data
to these which attach to that specific attribute.
So we basically have to call config_found_ia(..., "foobus", ...) where
such a bus is attached.
As a consequence, where a "mainbus" or alike also attaches other
devices (eg CPUs) which do not attach to a specific attribute yet,
we need at least pass an attribute name (different from "foobus") so
that the foo bus is not found at these places. This made some minor
changes necessary which are not obviously related to the mentioned buses.

/* $NetBSD: irongate.c,v 1.12 2004/08/30 15:05:16 drochner Exp $ */

/*-
 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * 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 "opt_api_up1000.h"

#include <sys/cdefs.h>

__KERNEL_RCSID(0, "$NetBSD: irongate.c,v 1.12 2004/08/30 15:05:16 drochner Exp $");

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

#include <machine/autoconf.h>
#include <machine/rpb.h>
#include <machine/sysarch.h>

#include <dev/isa/isareg.h>
#include <dev/isa/isavar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/agpvar.h>

#include <alpha/pci/irongatereg.h>
#include <alpha/pci/irongatevar.h>

#ifdef API_UP1000
#include <alpha/pci/pci_up1000.h>
#endif

int	irongate_match(struct device *, struct cfdata *, void *);
void	irongate_attach(struct device *, struct device *, void *);

CFATTACH_DECL(irongate, sizeof(struct irongate_softc),
    irongate_match, irongate_attach, NULL, NULL);

extern struct cfdriver irongate_cd;

/* There can be only one. */
struct irongate_config irongate_configuration;
int	irongate_found;

int	irongate_bus_get_window(int, int,
	    struct alpha_bus_space_translation *);

/*
 * Set up the chipset's function pointers.
 */
void
irongate_init(struct irongate_config *icp, int mallocsafe)
{
	pcitag_t tag;
	pcireg_t reg;

	icp->ic_mallocsafe = mallocsafe;

	/*
	 * Set up PCI configuration space; we can only read the
	 * revision info through configuration space.
	 */
	irongate_pci_init(&icp->ic_pc, icp);
	alpha_pci_chipset = &icp->ic_pc;

	tag = pci_make_tag(&icp->ic_pc, 0, IRONGATE_PCIHOST_DEV, 0);

	/* Read the revision. */
	reg = irongate_conf_read0(icp, tag, PCI_CLASS_REG);
	icp->ic_rev = PCI_REVISION(reg);

	if (icp->ic_initted == 0) {
		/* Don't do these twice, since they set up extents. */
		irongate_bus_io_init(&icp->ic_iot, icp);
		irongate_bus_mem_init(&icp->ic_memt, icp);

		/* Only one each PCI I/O and MEM window. */
		alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_IO] = 1;
		alpha_bus_window_count[ALPHA_BUS_TYPE_PCI_MEM] = 1;
		
		alpha_bus_get_window = irongate_bus_get_window;
	}

	icp->ic_initted = 1;
}

int
irongate_match(struct device *parent, struct cfdata *match, void *aux)
{
	struct mainbus_attach_args *ma = aux;

	/* Make sure we're looking for an Irongate. */
	if (strcmp(ma->ma_name, irongate_cd.cd_name) != 0)
		return (0);

	if (irongate_found)
		return (0);

	return (1);
}

void
irongate_attach(struct device *parent, struct device *self, void *aux)
{
	struct irongate_softc *sc = (void *) self;
	struct irongate_config *icp;
	struct pcibus_attach_args pba;
	struct agpbus_attach_args apa;
	pcitag_t tag;

	/* Note that we've attached the chipset; can't have 2 Irongates. */
	irongate_found = 1;

	/*
	 * Set up the chipset's info; done once at console init time
	 * (maybe), but we must do it here as well to take care of things
	 * that need to use memory allocation.
	 */
	icp = sc->sc_icp = &irongate_configuration;
	irongate_init(icp, 1);

	printf(": AMD 751 Core Logic + AGP Chipset, rev. %d\n", icp->ic_rev);

	irongate_dma_init(icp);

	/*
	 * Do PCI memory initialization that needs to be deferred until
	 * malloc is safe.
	 */
	irongate_bus_mem_init2(&icp->ic_memt, icp);

	switch (cputype) {
#ifdef API_UP1000
	case ST_API_NAUTILUS:
		pci_up1000_pickintr(icp);
		break;
#endif

	default:
		panic("irongate_attach: shouldn't be here, really...");
	}

	tag = pci_make_tag(&icp->ic_pc, 0, IRONGATE_PCIHOST_DEV, 0);

	pba.pba_iot = &icp->ic_iot;
	pba.pba_memt = &icp->ic_memt;
	pba.pba_dmat =
	    alphabus_dma_get_tag(&icp->ic_dmat_pci, ALPHA_BUS_PCI);
	pba.pba_dmat64 = NULL;
	pba.pba_pc = &icp->ic_pc;
	pba.pba_bus = 0;
	pba.pba_bridgetag = NULL;
	pba.pba_flags = PCI_FLAGS_IO_ENABLED | PCI_FLAGS_MEM_ENABLED |
	    PCI_FLAGS_MRL_OKAY | PCI_FLAGS_MRM_OKAY | PCI_FLAGS_MWI_OKAY;

	if (pci_get_capability(&icp->ic_pc, tag, PCI_CAP_AGP,
	    NULL, NULL) != 0) {
		apa.apa_pci_args.pa_iot = pba.pba_iot;
		apa.apa_pci_args.pa_memt = pba.pba_memt;
		apa.apa_pci_args.pa_dmat = pba.pba_dmat;
		apa.apa_pci_args.pa_pc = pba.pba_pc;
		apa.apa_pci_args.pa_bus = pba.pba_bus;
		apa.apa_pci_args.pa_device = IRONGATE_PCIHOST_DEV;
		apa.apa_pci_args.pa_function = 0;
		apa.apa_pci_args.pa_tag = tag;
		apa.apa_pci_args.pa_id =
		    irongate_conf_read0(icp, tag, PCI_ID_REG);
		apa.apa_pci_args.pa_class =
		    irongate_conf_read0(icp, tag, PCI_CLASS_REG);
		apa.apa_pci_args.pa_flags = pba.pba_flags;

		(void) config_found_ia(self, "agpbus", &apa, agpbusprint);
	}

	(void) config_found_ia(self, "pcibus", &pba, pcibusprint);
}

int
irongate_bus_get_window(int type, int window,
    struct alpha_bus_space_translation *abst)
{
	struct irongate_config *icp = &irongate_configuration;
	bus_space_tag_t st;
	int error;

	switch (type) {
	case ALPHA_BUS_TYPE_PCI_IO:
		st = &icp->ic_iot;
		break;

	case ALPHA_BUS_TYPE_PCI_MEM:
		st = &icp->ic_memt;
		break;

	default:
		panic("irongate_bus_get_window");
	}

	error = alpha_bus_space_get_window(st, window, abst);
	if (error)
		return (error);

	abst->abst_sys_start = IRONGATE_PHYSADDR(abst->abst_sys_start);
	abst->abst_sys_end = IRONGATE_PHYSADDR(abst->abst_sys_end);

	return (0);
}