1/*- 2 * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice unmodified, this list of conditions, and the following 10 * 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__FBSDID("$FreeBSD$"); 30 31#include <sys/param.h> 32#include <sys/systm.h> 33#include <sys/bus.h> 34#include <sys/rman.h> 35#include <sys/condvar.h> 36#include <sys/kernel.h> 37#include <sys/module.h> 38 39#include <dev/usb/usb.h> 40#include <dev/usb/usbdi.h> 41 42#include <dev/usb/usb_core.h> 43#include <dev/usb/usb_busdma.h> 44#include <dev/usb/usb_process.h> 45#include <dev/usb/usb_util.h> 46 47#include <dev/usb/usb_controller.h> 48#include <dev/usb/usb_bus.h> 49#include <dev/usb/controller/ohci.h> 50#include <dev/usb/controller/ohcireg.h> 51 52static int ar71xx_ohci_attach(device_t dev); 53static int ar71xx_ohci_detach(device_t dev); 54static int ar71xx_ohci_probe(device_t dev); 55 56struct ar71xx_ohci_softc 57{ 58 struct ohci_softc sc_ohci; 59}; 60 61static int 62ar71xx_ohci_probe(device_t dev) 63{ 64 device_set_desc(dev, "AR71XX integrated OHCI controller"); 65 return (BUS_PROBE_DEFAULT); 66} 67 68static int 69ar71xx_ohci_attach(device_t dev) 70{ 71 struct ar71xx_ohci_softc *sc = device_get_softc(dev); 72 int err; 73 int rid; 74 75 /* initialise some bus fields */ 76 sc->sc_ohci.sc_bus.parent = dev; 77 sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices; 78 sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES; 79 80 /* get all DMA memory */ 81 if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus, 82 USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) { 83 return (ENOMEM); 84 } 85 86 sc->sc_ohci.sc_dev = dev; 87 88 rid = 0; 89 sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, 90 RF_ACTIVE); 91 if (sc->sc_ohci.sc_io_res == NULL) { 92 err = ENOMEM; 93 goto error; 94 } 95 sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res); 96 sc->sc_ohci.sc_io_hdl = rman_get_bushandle(sc->sc_ohci.sc_io_res); 97 sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res); 98 99 rid = 0; 100 sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 101 RF_ACTIVE); 102 if (sc->sc_ohci.sc_irq_res == NULL) { 103 err = ENOMEM; 104 goto error; 105 } 106 sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1); 107 if (sc->sc_ohci.sc_bus.bdev == NULL) { 108 err = ENOMEM; 109 goto error; 110 } 111 device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus); 112 113 err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res, 114 INTR_TYPE_BIO | INTR_MPSAFE, NULL, 115 (driver_intr_t *)ohci_interrupt, sc, &sc->sc_ohci.sc_intr_hdl); 116 if (err) { 117 err = ENXIO; 118 goto error; 119 } 120 121 strlcpy(sc->sc_ohci.sc_vendor, "Atheros", sizeof(sc->sc_ohci.sc_vendor)); 122 123 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, OHCI_CONTROL, 0); 124 125 err = ohci_init(&sc->sc_ohci); 126 if (!err) 127 err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev); 128 129 if (err) 130 goto error; 131 return (0); 132 133error: 134 if (err) { 135 ar71xx_ohci_detach(dev); 136 return (err); 137 } 138 return (err); 139} 140 141static int 142ar71xx_ohci_detach(device_t dev) 143{ 144 struct ar71xx_ohci_softc *sc = device_get_softc(dev); 145 device_t bdev; 146 147 if (sc->sc_ohci.sc_bus.bdev) { 148 bdev = sc->sc_ohci.sc_bus.bdev; 149 device_detach(bdev); 150 device_delete_child(dev, bdev); 151 } 152 /* during module unload there are lots of children leftover */ 153 device_delete_children(dev); 154 155 /* 156 * Put the controller into reset, then disable clocks and do 157 * the MI tear down. We have to disable the clocks/hardware 158 * after we do the rest of the teardown. We also disable the 159 * clocks in the opposite order we acquire them, but that 160 * doesn't seem to be absolutely necessary. We free up the 161 * clocks after we disable them, so the system could, in 162 * theory, reuse them. 163 */ 164 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, 165 OHCI_CONTROL, 0); 166 167 if (sc->sc_ohci.sc_intr_hdl) { 168 bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, sc->sc_ohci.sc_intr_hdl); 169 sc->sc_ohci.sc_intr_hdl = NULL; 170 } 171 172 if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) { 173 /* 174 * only call ohci_detach() after ohci_init() 175 */ 176 ohci_detach(&sc->sc_ohci); 177 178 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_ohci.sc_irq_res); 179 sc->sc_ohci.sc_irq_res = NULL; 180 } 181 if (sc->sc_ohci.sc_io_res) { 182 bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_ohci.sc_io_res); 183 sc->sc_ohci.sc_io_res = NULL; 184 sc->sc_ohci.sc_io_tag = 0; 185 sc->sc_ohci.sc_io_hdl = 0; 186 } 187 usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc); 188 189 return (0); 190} 191 192static device_method_t ohci_methods[] = { 193 /* Device interface */ 194 DEVMETHOD(device_probe, ar71xx_ohci_probe), 195 DEVMETHOD(device_attach, ar71xx_ohci_attach), 196 DEVMETHOD(device_detach, ar71xx_ohci_detach), 197 DEVMETHOD(device_suspend, bus_generic_suspend), 198 DEVMETHOD(device_resume, bus_generic_resume), 199 DEVMETHOD(device_shutdown, bus_generic_shutdown), 200 201 DEVMETHOD_END 202}; 203 204static driver_t ohci_driver = { 205 .name = "ohci", 206 .methods = ohci_methods, 207 .size = sizeof(struct ar71xx_ohci_softc), 208}; 209 210static devclass_t ohci_devclass; 211 212DRIVER_MODULE(ohci, apb, ohci_driver, ohci_devclass, 0, 0); 213