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@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