dwc_otg_atmelarm.c revision 278278
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: stable/10/sys/dev/usb/controller/dwc_otg_atmelarm.c 278278 2015-02-05 20:03:02Z 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 sc->sc_otg.sc_bus.dma_bits = 32; 89 90 /* get all DMA memory */ 91 if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus, 92 USB_GET_DMA_TAG(dev), NULL)) { 93 return (ENOMEM); 94 } 95 rid = 0; 96 sc->sc_otg.sc_io_res = 97 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 98 99 if (!(sc->sc_otg.sc_io_res)) { 100 err = ENOMEM; 101 goto error; 102 } 103 sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res); 104 sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res); 105 sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res); 106 107 rid = 0; 108 sc->sc_otg.sc_irq_res = 109 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 110 if (sc->sc_otg.sc_irq_res == NULL) 111 goto error; 112 113 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); 114 if (sc->sc_otg.sc_bus.bdev == NULL) 115 goto error; 116 117 device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus); 118 119 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 120 &dwc_otg_filter_interrupt, &dwc_otg_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 121 if (err) { 122 sc->sc_otg.sc_intr_hdl = NULL; 123 goto error; 124 } 125 err = dwc_otg_init(&sc->sc_otg); 126 if (err == 0) { 127 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); 128 } 129 if (err) 130 goto error; 131 return (0); 132 133error: 134 dwc_otg_detach(dev); 135 return (ENXIO); 136} 137 138static int 139dwc_otg_detach(device_t dev) 140{ 141 struct dwc_otg_super_softc *sc = device_get_softc(dev); 142 device_t bdev; 143 int err; 144 145 if (sc->sc_otg.sc_bus.bdev) { 146 bdev = sc->sc_otg.sc_bus.bdev; 147 device_detach(bdev); 148 device_delete_child(dev, bdev); 149 } 150 /* during module unload there are lots of children leftover */ 151 device_delete_children(dev); 152 153 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) { 154 /* 155 * only call dwc_otg_uninit() after dwc_otg_init() 156 */ 157 dwc_otg_uninit(&sc->sc_otg); 158 159 err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res, 160 sc->sc_otg.sc_intr_hdl); 161 sc->sc_otg.sc_intr_hdl = NULL; 162 } 163 /* free IRQ channel, if any */ 164 if (sc->sc_otg.sc_irq_res) { 165 bus_release_resource(dev, SYS_RES_IRQ, 0, 166 sc->sc_otg.sc_irq_res); 167 sc->sc_otg.sc_irq_res = NULL; 168 } 169 /* free memory resource, if any */ 170 if (sc->sc_otg.sc_io_res) { 171 bus_release_resource(dev, SYS_RES_MEMORY, 0, 172 sc->sc_otg.sc_io_res); 173 sc->sc_otg.sc_io_res = NULL; 174 } 175 usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL); 176 177 return (0); 178} 179 180static device_method_t dwc_otg_methods[] = { 181 /* Device interface */ 182 DEVMETHOD(device_probe, dwc_otg_probe), 183 DEVMETHOD(device_attach, dwc_otg_attach), 184 DEVMETHOD(device_detach, dwc_otg_detach), 185 DEVMETHOD(device_suspend, bus_generic_suspend), 186 DEVMETHOD(device_resume, bus_generic_resume), 187 DEVMETHOD(device_shutdown, bus_generic_shutdown), 188 189 DEVMETHOD_END 190}; 191 192static driver_t dwc_otg_driver = { 193 .name = "dwc_otg", 194 .methods = dwc_otg_methods, 195 .size = sizeof(struct dwc_otg_super_softc), 196}; 197 198static devclass_t dwc_otg_devclass; 199 200DRIVER_MODULE(dwcotg, atmelarm, dwc_otg_driver, dwc_otg_devclass, 0, 0); 201MODULE_DEPEND(dwcotg, usb, 1, 1, 1); 202