dwc_otg_atmelarm.c revision 232539
1/*- 2 * Copyright (c) 2012 Hans Petter Selasky. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 13 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23 * SUCH DAMAGE. 24 */ 25 26#include <sys/cdefs.h> 27__FBSDID("$FreeBSD: head/sys/dev/usb/controller/dwc_otg_atmelarm.c 232539 2012-03-05 06:41:44Z hselasky $"); 28 29#include <sys/stdint.h> 30#include <sys/stddef.h> 31#include <sys/param.h> 32#include <sys/queue.h> 33#include <sys/types.h> 34#include <sys/systm.h> 35#include <sys/kernel.h> 36#include <sys/bus.h> 37#include <sys/module.h> 38#include <sys/lock.h> 39#include <sys/mutex.h> 40#include <sys/condvar.h> 41#include <sys/sysctl.h> 42#include <sys/sx.h> 43#include <sys/unistd.h> 44#include <sys/callout.h> 45#include <sys/malloc.h> 46#include <sys/priv.h> 47#include <sys/rman.h> 48 49#include <dev/usb/usb.h> 50#include <dev/usb/usbdi.h> 51 52#include <dev/usb/usb_core.h> 53#include <dev/usb/usb_busdma.h> 54#include <dev/usb/usb_process.h> 55#include <dev/usb/usb_util.h> 56 57#include <dev/usb/usb_controller.h> 58#include <dev/usb/usb_bus.h> 59 60#include <dev/usb/controller/dwc_otg.h> 61 62static device_probe_t dwc_otg_probe; 63static device_attach_t dwc_otg_attach; 64static device_detach_t dwc_otg_detach; 65 66struct dwc_otg_super_softc { 67 struct dwc_otg_softc sc_otg; /* must be first */ 68}; 69 70static int 71dwc_otg_probe(device_t dev) 72{ 73 device_set_desc(dev, "DWC OTG 2.0 integrated USB controller"); 74 return (0); 75} 76 77static int 78dwc_otg_attach(device_t dev) 79{ 80 struct dwc_otg_super_softc *sc = device_get_softc(dev); 81 int err; 82 int rid; 83 84 /* initialise some bus fields */ 85 sc->sc_otg.sc_bus.parent = dev; 86 sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices; 87 sc->sc_otg.sc_bus.devices_max = DWC_OTG_MAX_DEVICES; 88 89 /* get all DMA memory */ 90 if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus, 91 USB_GET_DMA_TAG(dev), NULL)) { 92 return (ENOMEM); 93 } 94 rid = 0; 95 sc->sc_otg.sc_io_res = 96 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 97 98 if (!(sc->sc_otg.sc_io_res)) { 99 err = ENOMEM; 100 goto error; 101 } 102 sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res); 103 sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res); 104 sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res); 105 106 rid = 0; 107 sc->sc_otg.sc_irq_res = 108 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 109 if (sc->sc_otg.sc_irq_res == NULL) 110 goto error; 111 112 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); 113 if (sc->sc_otg.sc_bus.bdev == NULL) 114 goto error; 115 116 device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus); 117 118 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 119 NULL, (driver_intr_t *)dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 120 if (err) { 121 sc->sc_otg.sc_intr_hdl = NULL; 122 goto error; 123 } 124 err = dwc_otg_init(&sc->sc_otg); 125 if (err == 0) { 126 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); 127 } 128 if (err) 129 goto error; 130 return (0); 131 132error: 133 dwc_otg_detach(dev); 134 return (ENXIO); 135} 136 137static int 138dwc_otg_detach(device_t dev) 139{ 140 struct dwc_otg_super_softc *sc = device_get_softc(dev); 141 device_t bdev; 142 int err; 143 144 if (sc->sc_otg.sc_bus.bdev) { 145 bdev = sc->sc_otg.sc_bus.bdev; 146 device_detach(bdev); 147 device_delete_child(dev, bdev); 148 } 149 /* during module unload there are lots of children leftover */ 150 device_delete_children(dev); 151 152 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) { 153 /* 154 * only call dwc_otg_uninit() after dwc_otg_init() 155 */ 156 dwc_otg_uninit(&sc->sc_otg); 157 158 err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res, 159 sc->sc_otg.sc_intr_hdl); 160 sc->sc_otg.sc_intr_hdl = NULL; 161 } 162 /* free IRQ channel, if any */ 163 if (sc->sc_otg.sc_irq_res) { 164 bus_release_resource(dev, SYS_RES_IRQ, 0, 165 sc->sc_otg.sc_irq_res); 166 sc->sc_otg.sc_irq_res = NULL; 167 } 168 /* free memory resource, if any */ 169 if (sc->sc_otg.sc_io_res) { 170 bus_release_resource(dev, SYS_RES_MEMORY, 0, 171 sc->sc_otg.sc_io_res); 172 sc->sc_otg.sc_io_res = NULL; 173 } 174 usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL); 175 176 return (0); 177} 178 179static device_method_t dwc_otg_methods[] = { 180 /* Device interface */ 181 DEVMETHOD(device_probe, dwc_otg_probe), 182 DEVMETHOD(device_attach, dwc_otg_attach), 183 DEVMETHOD(device_detach, dwc_otg_detach), 184 DEVMETHOD(device_suspend, bus_generic_suspend), 185 DEVMETHOD(device_resume, bus_generic_resume), 186 DEVMETHOD(device_shutdown, bus_generic_shutdown), 187 188 DEVMETHOD_END 189}; 190 191static driver_t dwc_otg_driver = { 192 .name = "dwc_otg", 193 .methods = dwc_otg_methods, 194 .size = sizeof(struct dwc_otg_super_softc), 195}; 196 197static devclass_t dwc_otg_devclass; 198 199DRIVER_MODULE(dwcotg, atmelarm, dwc_otg_driver, dwc_otg_devclass, 0, 0); 200MODULE_DEPEND(dwcotg, usb, 1, 1, 1); 201