NetBSD/sys/dev/cardbus/fwohci_cardbus.c

/*	$NetBSD: fwohci_cardbus.c,v 1.37 2021/07/24 21:31:36 andvar Exp $	*/

/*-
 * Copyright (c) 2000, 2001 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Matt Thomas of 3am Software Foundry.
 *
 * 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 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: fwohci_cardbus.c,v 1.37 2021/07/24 21:31:36 andvar Exp $");

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/socket.h>
#include <sys/device.h>
#include <sys/select.h>

#include <sys/bus.h>

#if defined pciinc
#include <dev/pci/pcidevs.h>
#endif

#include <dev/cardbus/cardbusvar.h>
#include <dev/pci/pcidevs.h>

#include <dev/ieee1394/firewire.h>
#include <dev/ieee1394/firewirereg.h>
#include <dev/ieee1394/fwdma.h>
#include <dev/ieee1394/fwohcireg.h>
#include <dev/ieee1394/fwohcivar.h>

struct fwohci_cardbus_softc {
	struct fwohci_softc	sc_sc;
	cardbus_chipset_tag_t	sc_cc;
	cardbus_function_tag_t	sc_cf;
	cardbus_devfunc_t	sc_ct;
	void		       *sc_ih;
};

static int fwohci_cardbus_match(device_t, cfdata_t, void *);
static void fwohci_cardbus_attach(device_t, device_t, void *);
static int fwohci_cardbus_detach(device_t, int);

CFATTACH_DECL_NEW(fwohci_cardbus, sizeof(struct fwohci_cardbus_softc),
    fwohci_cardbus_match, fwohci_cardbus_attach, fwohci_cardbus_detach, NULL);

static int
fwohci_cardbus_match(device_t parent, cfdata_t match, void *aux)
{
	struct cardbus_attach_args *ca = (struct cardbus_attach_args *)aux;

	if (PCI_CLASS(ca->ca_class) == PCI_CLASS_SERIALBUS &&
	    PCI_SUBCLASS(ca->ca_class) ==
	        PCI_SUBCLASS_SERIALBUS_FIREWIRE &&
	    PCI_INTERFACE(ca->ca_class) == PCI_INTERFACE_OHCI)
		return 1;

	return 0;
}

static void
fwohci_cardbus_attach(device_t parent, device_t self, void *aux)
{
	struct cardbus_attach_args *ca = aux;
	struct fwohci_cardbus_softc *sc = device_private(self);
	cardbus_devfunc_t ct = ca->ca_ct;
	cardbus_chipset_tag_t cc = ct->ct_cc;
	cardbus_function_tag_t cf = ct->ct_cf;
	pcireg_t csr;
	char devinfo[256];

	pci_devinfo(ca->ca_id, ca->ca_class, 0, devinfo, sizeof(devinfo));
	aprint_normal(": %s (rev. 0x%02x)\n", devinfo,
	       PCI_REVISION(ca->ca_class));
	aprint_naive("\n");

	fwohci_init(&sc->sc_sc);

	/* Map I/O registers */
	if (Cardbus_mapreg_map(ct, PCI_OHCI_MAP_REGISTER, PCI_MAPREG_TYPE_MEM,
	    0, &sc->sc_sc.bst, &sc->sc_sc.bsh, NULL, &sc->sc_sc.bssize)) {
		aprint_error_dev(self, "can't map OHCI register space\n");
		return;
	}

	sc->sc_sc.fc.dev = self;
	sc->sc_sc.fc.dmat = ca->ca_dmat;
	sc->sc_cc = cc;
	sc->sc_cf = cf;
	sc->sc_ct = ct;

	/* Disable interrupts, so we don't get any spurious ones. */
	OWRITE(&sc->sc_sc, FWOHCI_INTMASKCLR, OHCI_INT_EN);

	/* Enable the device. */
	csr = Cardbus_conf_read(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG);
	Cardbus_conf_write(ct, ca->ca_tag, PCI_COMMAND_STATUS_REG,
	    csr | PCI_COMMAND_MASTER_ENABLE | PCI_COMMAND_MEM_ENABLE);

	sc->sc_ih = Cardbus_intr_establish(ct, IPL_BIO, fwohci_intr, sc);
	if (sc->sc_ih == NULL) {
		aprint_error_dev(self, "couldn't establish interrupt\n");
		return;
	}

	/* XXX NULL should be replaced by some call to Cardbus code */
	if (fwohci_attach(&sc->sc_sc) != 0) {
		Cardbus_intr_disestablish(ct, sc->sc_ih);
		sc->sc_ih = NULL;
	}
}

int
fwohci_cardbus_detach(device_t self, int flags)
{
	struct fwohci_cardbus_softc *sc = device_private(self);
	cardbus_devfunc_t ct = sc->sc_ct;
	int rv;

	rv = fwohci_detach(&sc->sc_sc, flags);

	if (rv)
		return (rv);
	if (sc->sc_ih != NULL) {
		Cardbus_intr_disestablish(ct, sc->sc_ih);
		sc->sc_ih = NULL;
	}
	if (sc->sc_sc.bssize) {
		Cardbus_mapreg_unmap(ct, PCI_OHCI_MAP_REGISTER,
			sc->sc_sc.bst, sc->sc_sc.bsh,
			sc->sc_sc.bssize);
		sc->sc_sc.bssize = 0;
	}
	return (0);
}