1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2012 Hans Petter Selasky. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <sys/cdefs.h> 29 #include "opt_acpi.h" 30 31 #include <sys/param.h> 32 #include <sys/systm.h> 33 #include <sys/bus.h> 34 #include <sys/condvar.h> 35 #include <sys/kernel.h> 36 #include <sys/lock.h> 37 #include <sys/malloc.h> 38 #include <sys/module.h> 39 #include <sys/mutex.h> 40 #include <sys/rman.h> 41 42 #include <contrib/dev/acpica/include/acpi.h> 43 #include <contrib/dev/acpica/include/accommon.h> 44 45 #include <dev/acpica/acpivar.h> 46 47 #include <dev/usb/usb.h> 48 #include <dev/usb/usbdi.h> 49 50 #include <dev/usb/usb_core.h> 51 #include <dev/usb/usb_busdma.h> 52 #include <dev/usb/usb_process.h> 53 #include <dev/usb/usb_util.h> 54 55 #include <dev/usb/usb_controller.h> 56 #include <dev/usb/usb_bus.h> 57 58 #include <dev/usb/controller/dwc_otg.h> 59 60 static device_probe_t dwc_otg_probe; 61 static device_attach_t dwc_otg_attach; 62 static device_attach_t dwc_otg_detach; 63 64 static char *dwc_otg_ids[] = { 65 "BCM2848", 66 NULL 67 }; 68 69 static int 70 dwc_otg_probe(device_t dev) 71 { 72 int rv; 73 74 if (acpi_disabled("dwc_otg")) 75 return (ENXIO); 76 77 rv = ACPI_ID_PROBE(device_get_parent(dev), dev, dwc_otg_ids, NULL); 78 if (rv > 0) 79 return (rv); 80 81 device_set_desc(dev, "DWC OTG 2.0 integrated USB controller"); 82 83 return (BUS_PROBE_DEFAULT); 84 } 85 86 static int 87 dwc_otg_attach(device_t dev) 88 { 89 struct dwc_otg_softc *sc = device_get_softc(dev); 90 int err; 91 int rid; 92 93 sc->sc_bus.parent = dev; 94 95 /* assume device mode (this is only used for the Raspberry Pi 4's 96 * USB-C port, which only works in device mode) */ 97 sc->sc_mode = DWC_MODE_DEVICE; 98 99 rid = 0; 100 sc->sc_io_res = 101 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 102 103 if (sc->sc_io_res == NULL) 104 goto error; 105 106 rid = 0; 107 sc->sc_irq_res = 108 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 109 if (sc->sc_irq_res == NULL) 110 goto error; 111 112 err = dwc_otg_init(sc); 113 if (err == 0) { 114 err = device_probe_and_attach(sc->sc_bus.bdev); 115 } 116 if (err) 117 goto error; 118 119 return (0); 120 121 error: 122 dwc_otg_detach(dev); 123 return (ENXIO); 124 } 125 126 static int 127 dwc_otg_detach(device_t dev) 128 { 129 struct dwc_otg_softc *sc = device_get_softc(dev); 130 131 /* during module unload there are lots of children leftover */ 132 device_delete_children(dev); 133 134 if (sc->sc_irq_res && sc->sc_intr_hdl) { 135 /* 136 * only call dwc_otg_uninit() after dwc_otg_init() 137 */ 138 dwc_otg_uninit(sc); 139 140 bus_teardown_intr(dev, sc->sc_irq_res, 141 sc->sc_intr_hdl); 142 sc->sc_intr_hdl = NULL; 143 } 144 /* free IRQ channel, if any */ 145 if (sc->sc_irq_res) { 146 bus_release_resource(dev, SYS_RES_IRQ, 0, 147 sc->sc_irq_res); 148 sc->sc_irq_res = NULL; 149 } 150 /* free memory resource, if any */ 151 if (sc->sc_io_res) { 152 bus_release_resource(dev, SYS_RES_MEMORY, 0, 153 sc->sc_io_res); 154 sc->sc_io_res = NULL; 155 } 156 usb_bus_mem_free_all(&sc->sc_bus, NULL); 157 158 return (0); 159 } 160 161 static device_method_t dwc_otg_methods[] = { 162 /* Device interface */ 163 DEVMETHOD(device_probe, dwc_otg_probe), 164 DEVMETHOD(device_attach, dwc_otg_attach), 165 DEVMETHOD(device_detach, dwc_otg_detach), 166 DEVMETHOD(device_suspend, bus_generic_suspend), 167 DEVMETHOD(device_resume, bus_generic_resume), 168 DEVMETHOD(device_shutdown, bus_generic_shutdown), 169 170 DEVMETHOD_END 171 }; 172 173 static driver_t dwc_otg_driver = { 174 .name = "dwcotg", 175 .methods = dwc_otg_methods, 176 .size = sizeof(struct dwc_otg_softc), 177 }; 178 179 DRIVER_MODULE(dwcotg, acpi, dwc_otg_driver, 0, 0); 180 MODULE_DEPEND(dwcotg, usb, 1, 1, 1); 181