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      1 /* $NetBSD: ohci_acpi.c,v 1.2 2021/12/26 14:35:03 jmcneill Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2021 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Jared McNeill <jmcneill (at) invisible.ca>.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     29  * POSSIBILITY OF SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 __KERNEL_RCSID(0, "$NetBSD: ohci_acpi.c,v 1.2 2021/12/26 14:35:03 jmcneill Exp $");
     34 
     35 #include <sys/param.h>
     36 #include <sys/bus.h>
     37 #include <sys/cpu.h>
     38 #include <sys/device.h>
     39 
     40 #include <dev/usb/usb.h>
     41 #include <dev/usb/usbdi.h>
     42 #include <dev/usb/usbdivar.h>
     43 #include <dev/usb/usb_mem.h>
     44 #include <dev/usb/ohcireg.h>
     45 #include <dev/usb/ohcivar.h>
     46 
     47 #include <dev/acpi/acpireg.h>
     48 #include <dev/acpi/acpivar.h>
     49 #include <dev/acpi/acpi_intr.h>
     50 #include <dev/acpi/acpi_usb.h>
     51 
     52 #include <dev/pci/pcireg.h>
     53 
     54 static int	ohci_acpi_match(device_t, cfdata_t, void *);
     55 static void	ohci_acpi_attach(device_t, device_t, void *);
     56 
     57 CFATTACH_DECL2_NEW(ohci_acpi, sizeof(struct ohci_softc),
     58 	ohci_acpi_match, ohci_acpi_attach, NULL,
     59 	ohci_activate, NULL, ohci_childdet);
     60 
     61 static const struct device_compatible_entry compat_data[] = {
     62 	{ .compat = "generic-ohci" },		/* DT link */
     63 	DEVICE_COMPAT_EOL
     64 };
     65 
     66 static int
     67 ohci_acpi_match(device_t parent, cfdata_t cf, void *aux)
     68 {
     69 	struct acpi_attach_args *aa = aux;
     70 	int match;
     71 
     72 	if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) {
     73 		return 0;
     74 	}
     75 
     76 	match = acpi_compatible_match(aa, compat_data);
     77 	if (!match) {
     78 		match = acpi_match_class(aa->aa_node->ad_handle,
     79 		    PCI_CLASS_SERIALBUS,
     80 		    PCI_SUBCLASS_SERIALBUS_USB,
     81 		    PCI_INTERFACE_OHCI);
     82 	}
     83 
     84 	return match;
     85 }
     86 
     87 static void
     88 ohci_acpi_attach(device_t parent, device_t self, void *aux)
     89 {
     90 	struct ohci_softc * const sc = device_private(self);
     91 	struct acpi_attach_args *aa = aux;
     92 	struct acpi_resources res;
     93 	struct acpi_mem *mem;
     94 	struct acpi_irq *irq;
     95 	ACPI_STATUS rv;
     96 	int error;
     97 	void *ih;
     98 
     99 	sc->sc_dev = self;
    100 	sc->sc_bus.ub_hcpriv = sc;
    101 	sc->sc_bus.ub_dmatag = aa->aa_dmat;
    102 	sc->sc_bus.ub_revision = USBREV_1_0;
    103 
    104 	rv = acpi_resource_parse(sc->sc_dev, aa->aa_node->ad_handle, "_CRS",
    105 	    &res, &acpi_resource_parse_ops_default);
    106 	if (ACPI_FAILURE(rv)) {
    107 		return;
    108 	}
    109 
    110 	mem = acpi_res_mem(&res, 0);
    111 	if (mem == NULL) {
    112 		aprint_error_dev(self, "couldn't find mem resource\n");
    113 		goto done;
    114 	}
    115 
    116 	irq = acpi_res_irq(&res, 0);
    117 	if (irq == NULL) {
    118 		aprint_error_dev(self, "couldn't find irq resource\n");
    119 		goto done;
    120 	}
    121 
    122 	sc->sc_size = mem->ar_length;
    123 	sc->iot = aa->aa_memt;
    124 	error = bus_space_map(sc->iot, mem->ar_base, mem->ar_length, 0, &sc->ioh);
    125 	if (error) {
    126 		aprint_error_dev(self, "couldn't map registers\n");
    127 		goto done;
    128 	}
    129 
    130 	/* Disable interrupts */
    131 	bus_space_write_4(sc->iot, sc->ioh, OHCI_INTERRUPT_DISABLE,
    132 	    OHCI_ALL_INTRS);
    133 
    134 	ih = acpi_intr_establish(self,
    135 	    (uint64_t)(uintptr_t)aa->aa_node->ad_handle,
    136 	    IPL_USB, true, ohci_intr, sc, device_xname(self));
    137 	if (ih == NULL) {
    138 		aprint_error_dev(self, "couldn't establish interrupt\n");
    139 		goto done;
    140 	}
    141 
    142 	error = ohci_init(sc);
    143 	if (error) {
    144 		aprint_error_dev(self, "init failed, error = %d\n", error);
    145 		acpi_intr_disestablish(ih);
    146 		goto done;
    147 	}
    148 
    149 	sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint, CFARGS_NONE);
    150 
    151 done:
    152 	acpi_resource_cleanup(&res);
    153 }
    154