xref: /src/sys/dev/acpi/ohci_acpi.c

/* $NetBSD: ohci_acpi.c,v 1.2 2021/12/26 14:35:03 jmcneill Exp $ */

/*-
 * Copyright (c) 2021 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Jared McNeill <jmcneill (at) invisible.ca>.
 *
 * 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: ohci_acpi.c,v 1.2 2021/12/26 14:35:03 jmcneill Exp $");

#include <sys/param.h>
#include <sys/bus.h>
#include <sys/cpu.h>
#include <sys/device.h>

#include <dev/usb/usb.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_mem.h>
#include <dev/usb/ohcireg.h>
#include <dev/usb/ohcivar.h>

#include <dev/acpi/acpireg.h>
#include <dev/acpi/acpivar.h>
#include <dev/acpi/acpi_intr.h>
#include <dev/acpi/acpi_usb.h>

#include <dev/pci/pcireg.h>

static int	ohci_acpi_match(device_t, cfdata_t, void *);
static void	ohci_acpi_attach(device_t, device_t, void *);

CFATTACH_DECL2_NEW(ohci_acpi, sizeof(struct ohci_softc),
	ohci_acpi_match, ohci_acpi_attach, NULL,
	ohci_activate, NULL, ohci_childdet);

static const struct device_compatible_entry compat_data[] = {
	{ .compat = "generic-ohci" },		/* DT link */
	DEVICE_COMPAT_EOL
};

static int
ohci_acpi_match(device_t parent, cfdata_t cf, void *aux)
{
	struct acpi_attach_args *aa = aux;
	int match;

	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) {
		return 0;
	}

	match = acpi_compatible_match(aa, compat_data);
	if (!match) {
		match = acpi_match_class(aa->aa_node->ad_handle,
		    PCI_CLASS_SERIALBUS,
		    PCI_SUBCLASS_SERIALBUS_USB,
		    PCI_INTERFACE_OHCI);
	}

	return match;
}

static void
ohci_acpi_attach(device_t parent, device_t self, void *aux)
{
	struct ohci_softc * const sc = device_private(self);
	struct acpi_attach_args *aa = aux;
	struct acpi_resources res;
	struct acpi_mem *mem;
	struct acpi_irq *irq;
	ACPI_STATUS rv;
	int error;
	void *ih;

	sc->sc_dev = self;
	sc->sc_bus.ub_hcpriv = sc;
	sc->sc_bus.ub_dmatag = aa->aa_dmat;
	sc->sc_bus.ub_revision = USBREV_1_0;

	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
	    &res, &acpi_resource_parse_ops_default);
	if (ACPI_FAILURE(rv)) {
		return;
	}

	mem = acpi_res_mem(&res, 0);
	if (mem == NULL) {
		aprint_error_dev(self, "couldn't find mem resource\n");
		goto done;
	}

	irq = acpi_res_irq(&res, 0);
	if (irq == NULL) {
		aprint_error_dev(self, "couldn't find irq resource\n");
		goto done;
	}

	sc->sc_size = mem->ar_length;
	sc->iot = aa->aa_memt;
	error = bus_space_map(sc->iot, mem->ar_base, mem->ar_length, 0, &sc->ioh);
	if (error) {
		aprint_error_dev(self, "couldn't map registers\n");
		goto done;
	}

	/* Disable interrupts */
	bus_space_write_4(sc->iot, sc->ioh, OHCI_INTERRUPT_DISABLE,
	    OHCI_ALL_INTRS);

	ih = acpi_intr_establish(self,
	    (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
	    IPL_USB, true, ohci_intr, sc, device_xname(self));
	if (ih == NULL) {
		aprint_error_dev(self, "couldn't establish interrupt\n");
		goto done;
	}

	error = ohci_init(sc);
	if (error) {
		aprint_error_dev(self, "init failed, error = %d\n", error);
		acpi_intr_disestablish(ih);
		goto done;
	}

	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE);

done:
	acpi_resource_cleanup(&res);
}