musb_otg_atmelarm.c revision 190183
1/* $FreeBSD: head/sys/dev/usb/controller/musb_otg_atmelarm.c 190183 2009-03-20 21:57:54Z thompsa $ */ 2/*- 3 * Copyright (c) 2008 Hans Petter Selasky. 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, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27#include <dev/usb/usb_mfunc.h> 28#include <dev/usb/usb.h> 29 30#include <dev/usb/usb_core.h> 31#include <dev/usb/usb_busdma.h> 32#include <dev/usb/usb_process.h> 33#include <dev/usb/usb_sw_transfer.h> 34#include <dev/usb/usb_util.h> 35 36#include <dev/usb/usb_controller.h> 37#include <dev/usb/usb_bus.h> 38#include <dev/usb/controller/musb_otg.h> 39 40#include <sys/rman.h> 41 42static device_probe_t musbotg_probe; 43static device_attach_t musbotg_attach; 44static device_detach_t musbotg_detach; 45static device_shutdown_t musbotg_shutdown; 46 47struct musbotg_super_softc { 48 struct musbotg_softc sc_otg; /* must be first */ 49}; 50 51static void 52musbotg_vbus_poll(struct musbotg_super_softc *sc) 53{ 54 uint8_t vbus_val = 1; /* fake VBUS on - TODO */ 55 56 /* just forward it */ 57 musbotg_vbus_interrupt(&sc->sc_otg, vbus_val); 58} 59 60static void 61musbotg_clocks_on(void *arg) 62{ 63#if 0 64 struct musbotg_super_softc *sc = arg; 65 66#endif 67} 68 69static void 70musbotg_clocks_off(void *arg) 71{ 72#if 0 73 struct musbotg_super_softc *sc = arg; 74 75#endif 76} 77 78static int 79musbotg_probe(device_t dev) 80{ 81 device_set_desc(dev, "MUSB OTG integrated USB controller"); 82 return (0); 83} 84 85static int 86musbotg_attach(device_t dev) 87{ 88 struct musbotg_super_softc *sc = device_get_softc(dev); 89 int err; 90 int rid; 91 92 /* setup MUSB OTG USB controller interface softc */ 93 sc->sc_otg.sc_clocks_on = &musbotg_clocks_on; 94 sc->sc_otg.sc_clocks_off = &musbotg_clocks_off; 95 sc->sc_otg.sc_clocks_arg = sc; 96 97 /* initialise some bus fields */ 98 sc->sc_otg.sc_bus.parent = dev; 99 sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices; 100 sc->sc_otg.sc_bus.devices_max = MUSB2_MAX_DEVICES; 101 102 /* get all DMA memory */ 103 if (usb2_bus_mem_alloc_all(&sc->sc_otg.sc_bus, 104 USB_GET_DMA_TAG(dev), NULL)) { 105 return (ENOMEM); 106 } 107 rid = 0; 108 sc->sc_otg.sc_io_res = 109 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 110 111 if (!(sc->sc_otg.sc_io_res)) { 112 err = ENOMEM; 113 goto error; 114 } 115 sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res); 116 sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res); 117 sc->sc_otg.sc_io_size = rman_get_size(sc->sc_otg.sc_io_res); 118 119 rid = 0; 120 sc->sc_otg.sc_irq_res = 121 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 122 if (!(sc->sc_otg.sc_irq_res)) { 123 goto error; 124 } 125 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); 126 if (!(sc->sc_otg.sc_bus.bdev)) { 127 goto error; 128 } 129 device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus); 130 131#if (__FreeBSD_version >= 700031) 132 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 133 NULL, (driver_intr_t *)musbotg_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 134#else 135 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 136 (driver_intr_t *)musbotg_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 137#endif 138 if (err) { 139 sc->sc_otg.sc_intr_hdl = NULL; 140 goto error; 141 } 142 err = musbotg_init(&sc->sc_otg); 143 if (!err) { 144 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); 145 } 146 if (err) { 147 goto error; 148 } else { 149 /* poll VBUS one time */ 150 musbotg_vbus_poll(sc); 151 } 152 return (0); 153 154error: 155 musbotg_detach(dev); 156 return (ENXIO); 157} 158 159static int 160musbotg_detach(device_t dev) 161{ 162 struct musbotg_super_softc *sc = device_get_softc(dev); 163 device_t bdev; 164 int err; 165 166 if (sc->sc_otg.sc_bus.bdev) { 167 bdev = sc->sc_otg.sc_bus.bdev; 168 device_detach(bdev); 169 device_delete_child(dev, bdev); 170 } 171 /* during module unload there are lots of children leftover */ 172 device_delete_all_children(dev); 173 174 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) { 175 /* 176 * only call musbotg_uninit() after musbotg_init() 177 */ 178 musbotg_uninit(&sc->sc_otg); 179 180 err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res, 181 sc->sc_otg.sc_intr_hdl); 182 sc->sc_otg.sc_intr_hdl = NULL; 183 } 184 /* free IRQ channel, if any */ 185 if (sc->sc_otg.sc_irq_res) { 186 bus_release_resource(dev, SYS_RES_IRQ, 0, 187 sc->sc_otg.sc_irq_res); 188 sc->sc_otg.sc_irq_res = NULL; 189 } 190 /* free memory resource, if any */ 191 if (sc->sc_otg.sc_io_res) { 192 bus_release_resource(dev, SYS_RES_MEMORY, 0, 193 sc->sc_otg.sc_io_res); 194 sc->sc_otg.sc_io_res = NULL; 195 } 196 usb2_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL); 197 198 return (0); 199} 200 201static int 202musbotg_shutdown(device_t dev) 203{ 204 struct musbotg_super_softc *sc = device_get_softc(dev); 205 int err; 206 207 err = bus_generic_shutdown(dev); 208 if (err) 209 return (err); 210 211 musbotg_uninit(&sc->sc_otg); 212 213 return (0); 214} 215 216static device_method_t musbotg_methods[] = { 217 /* Device interface */ 218 DEVMETHOD(device_probe, musbotg_probe), 219 DEVMETHOD(device_attach, musbotg_attach), 220 DEVMETHOD(device_detach, musbotg_detach), 221 DEVMETHOD(device_shutdown, musbotg_shutdown), 222 223 /* Bus interface */ 224 DEVMETHOD(bus_print_child, bus_generic_print_child), 225 226 {0, 0} 227}; 228 229static driver_t musbotg_driver = { 230 "musbotg", 231 musbotg_methods, 232 sizeof(struct musbotg_super_softc), 233}; 234 235static devclass_t musbotg_devclass; 236 237DRIVER_MODULE(musbotg, atmelarm, musbotg_driver, musbotg_devclass, 0, 0); 238MODULE_DEPEND(musbotg, usb, 1, 1, 1); 239