musb_otg_atmelarm.c revision 227849
1/*- 2 * Copyright (c) 2008 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/musb_otg_atmelarm.c 227849 2011-11-22 21:56:55Z 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 48#include <dev/usb/usb.h> 49#include <dev/usb/usbdi.h> 50 51#include <dev/usb/usb_core.h> 52#include <dev/usb/usb_busdma.h> 53#include <dev/usb/usb_process.h> 54#include <dev/usb/usb_util.h> 55 56#include <dev/usb/usb_controller.h> 57#include <dev/usb/usb_bus.h> 58#include <dev/usb/controller/musb_otg.h> 59 60#include <sys/rman.h> 61 62static device_probe_t musbotg_probe; 63static device_attach_t musbotg_attach; 64static device_detach_t musbotg_detach; 65static device_shutdown_t musbotg_shutdown; 66 67struct musbotg_super_softc { 68 struct musbotg_softc sc_otg; /* must be first */ 69}; 70 71static void 72musbotg_vbus_poll(struct musbotg_super_softc *sc) 73{ 74 uint8_t vbus_val = 1; /* fake VBUS on - TODO */ 75 76 /* just forward it */ 77 musbotg_vbus_interrupt(&sc->sc_otg, vbus_val); 78} 79 80static void 81musbotg_clocks_on(void *arg) 82{ 83#if 0 84 struct musbotg_super_softc *sc = arg; 85 86#endif 87} 88 89static void 90musbotg_clocks_off(void *arg) 91{ 92#if 0 93 struct musbotg_super_softc *sc = arg; 94 95#endif 96} 97 98static int 99musbotg_probe(device_t dev) 100{ 101 device_set_desc(dev, "MUSB OTG integrated USB controller"); 102 return (0); 103} 104 105static int 106musbotg_attach(device_t dev) 107{ 108 struct musbotg_super_softc *sc = device_get_softc(dev); 109 int err; 110 int rid; 111 112 /* setup MUSB OTG USB controller interface softc */ 113 sc->sc_otg.sc_clocks_on = &musbotg_clocks_on; 114 sc->sc_otg.sc_clocks_off = &musbotg_clocks_off; 115 sc->sc_otg.sc_clocks_arg = sc; 116 117 /* initialise some bus fields */ 118 sc->sc_otg.sc_bus.parent = dev; 119 sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices; 120 sc->sc_otg.sc_bus.devices_max = MUSB2_MAX_DEVICES; 121 122 /* get all DMA memory */ 123 if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus, 124 USB_GET_DMA_TAG(dev), NULL)) { 125 return (ENOMEM); 126 } 127 rid = 0; 128 sc->sc_otg.sc_io_res = 129 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 130 131 if (!(sc->sc_otg.sc_io_res)) { 132 err = ENOMEM; 133 goto error; 134 } 135 sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res); 136 sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res); 137 sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res); 138 139 rid = 0; 140 sc->sc_otg.sc_irq_res = 141 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 142 if (!(sc->sc_otg.sc_irq_res)) { 143 goto error; 144 } 145 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); 146 if (!(sc->sc_otg.sc_bus.bdev)) { 147 goto error; 148 } 149 device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus); 150 151#if (__FreeBSD_version >= 700031) 152 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 153 NULL, (driver_intr_t *)musbotg_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 154#else 155 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 156 (driver_intr_t *)musbotg_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 157#endif 158 if (err) { 159 sc->sc_otg.sc_intr_hdl = NULL; 160 goto error; 161 } 162 err = musbotg_init(&sc->sc_otg); 163 if (!err) { 164 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); 165 } 166 if (err) { 167 goto error; 168 } else { 169 /* poll VBUS one time */ 170 musbotg_vbus_poll(sc); 171 } 172 return (0); 173 174error: 175 musbotg_detach(dev); 176 return (ENXIO); 177} 178 179static int 180musbotg_detach(device_t dev) 181{ 182 struct musbotg_super_softc *sc = device_get_softc(dev); 183 device_t bdev; 184 int err; 185 186 if (sc->sc_otg.sc_bus.bdev) { 187 bdev = sc->sc_otg.sc_bus.bdev; 188 device_detach(bdev); 189 device_delete_child(dev, bdev); 190 } 191 /* during module unload there are lots of children leftover */ 192 device_delete_children(dev); 193 194 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) { 195 /* 196 * only call musbotg_uninit() after musbotg_init() 197 */ 198 musbotg_uninit(&sc->sc_otg); 199 200 err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res, 201 sc->sc_otg.sc_intr_hdl); 202 sc->sc_otg.sc_intr_hdl = NULL; 203 } 204 /* free IRQ channel, if any */ 205 if (sc->sc_otg.sc_irq_res) { 206 bus_release_resource(dev, SYS_RES_IRQ, 0, 207 sc->sc_otg.sc_irq_res); 208 sc->sc_otg.sc_irq_res = NULL; 209 } 210 /* free memory resource, if any */ 211 if (sc->sc_otg.sc_io_res) { 212 bus_release_resource(dev, SYS_RES_MEMORY, 0, 213 sc->sc_otg.sc_io_res); 214 sc->sc_otg.sc_io_res = NULL; 215 } 216 usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL); 217 218 return (0); 219} 220 221static int 222musbotg_shutdown(device_t dev) 223{ 224 struct musbotg_super_softc *sc = device_get_softc(dev); 225 int err; 226 227 err = bus_generic_shutdown(dev); 228 if (err) 229 return (err); 230 231 musbotg_uninit(&sc->sc_otg); 232 233 return (0); 234} 235 236static device_method_t musbotg_methods[] = { 237 /* Device interface */ 238 DEVMETHOD(device_probe, musbotg_probe), 239 DEVMETHOD(device_attach, musbotg_attach), 240 DEVMETHOD(device_detach, musbotg_detach), 241 DEVMETHOD(device_shutdown, musbotg_shutdown), 242 243 DEVMETHOD_END 244}; 245 246static driver_t musbotg_driver = { 247 "musbotg", 248 musbotg_methods, 249 sizeof(struct musbotg_super_softc), 250}; 251 252static devclass_t musbotg_devclass; 253 254DRIVER_MODULE(musbotg, atmelarm, musbotg_driver, musbotg_devclass, 0, 0); 255MODULE_DEPEND(musbotg, usb, 1, 1, 1); 256