1 /* $NetBSD: ehci_acpi.c,v 1.3 2018/11/16 23:18:17 jmcneill Exp $ */ 2 3 /*- 4 * Copyright (c) 2018 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: ehci_acpi.c,v 1.3 2018/11/16 23:18:17 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/ehcireg.h> 45 #include <dev/usb/ehcivar.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 static const char * const compatible[] = { 53 "PNP0D20", /* EHCI-compliant USB controller without standard debug */ 54 "PNP0D25", /* EHCI-compliant USB controller with standard debug */ 55 NULL 56 }; 57 58 struct ehci_acpi_softc { 59 struct ehci_softc sc_ehci; 60 ACPI_HANDLE sc_handle; 61 }; 62 63 static int ehci_acpi_match(device_t, cfdata_t, void *); 64 static void ehci_acpi_attach(device_t, device_t, void *); 65 66 static void ehci_acpi_init(struct ehci_softc *); 67 68 CFATTACH_DECL2_NEW(ehci_acpi, sizeof(struct ehci_acpi_softc), 69 ehci_acpi_match, ehci_acpi_attach, NULL, 70 ehci_activate, NULL, ehci_childdet); 71 72 static int 73 ehci_acpi_match(device_t parent, cfdata_t cf, void *aux) 74 { 75 struct acpi_attach_args *aa = aux; 76 77 if (aa->aa_node->ad_type != ACPI_TYPE_DEVICE) 78 return 0; 79 80 return acpi_match_hid(aa->aa_node->ad_devinfo, compatible); 81 } 82 83 static void 84 ehci_acpi_attach(device_t parent, device_t self, void *aux) 85 { 86 struct ehci_acpi_softc * const asc = device_private(self); 87 struct ehci_softc * const sc = &asc->sc_ehci; 88 struct acpi_attach_args *aa = aux; 89 struct acpi_resources res; 90 struct acpi_mem *mem; 91 struct acpi_irq *irq; 92 ACPI_STATUS rv; 93 int error; 94 void *ih; 95 96 asc->sc_handle = aa->aa_node->ad_handle; 97 98 sc->sc_dev = self; 99 sc->sc_bus.ub_hcpriv = sc; 100 sc->sc_bus.ub_dmatag = aa->aa_dmat; 101 sc->sc_bus.ub_revision = USBREV_2_0; 102 sc->sc_flags = EHCIF_ETTF; 103 sc->sc_vendor_init = ehci_acpi_init; 104 105 rv = acpi_resource_parse(sc->sc_dev, asc->sc_handle, "_CRS", 106 &res, &acpi_resource_parse_ops_default); 107 if (ACPI_FAILURE(rv)) 108 return; 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 return; 128 } 129 130 /* Disable interrupts */ 131 sc->sc_offs = EREAD1(sc, EHCI_CAPLENGTH); 132 EOWRITE4(sc, EHCI_USBINTR, 0); 133 134 ih = acpi_intr_establish(self, (uint64_t)aa->aa_node->ad_handle, 135 IPL_USB, true, ehci_intr, sc, device_xname(self)); 136 if (ih == NULL) { 137 aprint_error_dev(self, "couldn't establish interrupt\n"); 138 return; 139 } 140 141 error = ehci_init(sc); 142 if (error) { 143 aprint_error_dev(self, "init failed, error = %d\n", error); 144 return; 145 } 146 147 sc->sc_child = config_found(self, &sc->sc_bus, usbctlprint); 148 149 done: 150 acpi_resource_cleanup(&res); 151 } 152 153 static void 154 ehci_acpi_init(struct ehci_softc *sc) 155 { 156 struct ehci_acpi_softc * const asc = (struct ehci_acpi_softc *)sc; 157 158 acpi_usb_post_reset(asc->sc_handle); 159 } 160