xref: /src/sys/dev/pci/pciide.c

/*	$NetBSD: pciide.c,v 1.217.2.1 2010/11/06 08:08:31 uebayasi Exp $	*/


/*
 * Copyright (c) 1999, 2000, 2001 Manuel Bouyer.
 *
 * 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 ``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 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.
 *
 */


/*
 * Copyright (c) 1996, 1998 Christopher G. Demetriou.  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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed by Christopher G. Demetriou
 *	for the NetBSD Project.
 * 4. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
 */

/*
 * PCI IDE controller driver.
 *
 * Author: Christopher G. Demetriou, March 2, 1998 (derived from NetBSD
 * sys/dev/pci/ppb.c, revision 1.16).
 *
 * See "PCI IDE Controller Specification, Revision 1.0 3/4/94" and
 * "Programming Interface for Bus Master IDE Controller, Revision 1.0
 * 5/16/94" from the PCI SIG.
 *
 */

#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pciide.c,v 1.217.2.1 2010/11/06 08:08:31 uebayasi Exp $");

#include <sys/param.h>

#include <dev/pci/pcivar.h>
#include <dev/pci/pciidereg.h>
#include <dev/pci/pciidevar.h>

static int	pciide_match(device_t, cfdata_t, void *);
static void	pciide_attach(device_t, device_t, void *);
static int	pciide_detach(device_t, int);

CFATTACH_DECL_NEW(pciide, sizeof(struct pciide_softc),
    pciide_match, pciide_attach, pciide_detach, NULL);

static int
pciide_match(device_t parent, cfdata_t match, void *aux)
{
	struct pci_attach_args *pa = aux;

	/*
	 * Check the ID register to see that it's a PCI IDE controller.
	 * If it is, we assume that we can deal with it; it _should_
	 * work in a standardized way...
	 */
	if (PCI_CLASS(pa->pa_class) == PCI_CLASS_MASS_STORAGE &&
	    PCI_SUBCLASS(pa->pa_class) == PCI_SUBCLASS_MASS_STORAGE_IDE) {
		return (1);
	}

	return (0);
}

static void
pciide_attach(device_t parent, device_t self, void *aux)
{
	struct pci_attach_args *pa = aux;
	struct pciide_softc *sc = device_private(self);

	sc->sc_wdcdev.sc_atac.atac_dev = self;

	pciide_common_attach(sc, pa, NULL);
}

static int
pciide_detach(device_t self, int flags)
{
	struct pciide_softc *sc = device_private(self);
	int ret;

	ret = pciide_common_detach(sc, flags);

	if (ret != 0)
		return ret;

	pci_intr_disestablish(sc->sc_pc, sc->sc_pci_ih);

	return ret;
}