atmegadci_atmelarm.c revision 228483
1#include <sys/cdefs.h> 2__FBSDID("$FreeBSD: head/sys/dev/usb/controller/atmegadci_atmelarm.c 228483 2011-12-14 00:28:54Z hselasky $"); 3 4/*- 5 * Copyright (c) 2009 Hans Petter Selasky. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 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/atmegadci.h> 59 60#include <sys/rman.h> 61 62static device_probe_t atmegadci_probe; 63static device_attach_t atmegadci_attach; 64static device_detach_t atmegadci_detach; 65 66struct atmegadci_super_softc { 67 struct atmegadci_softc sc_otg; /* must be first */ 68}; 69 70static void 71atmegadci_clocks_on(struct usb_bus *bus) 72{ 73 /* TODO */ 74} 75 76static void 77atmegadci_clocks_off(struct usb_bus *bus) 78{ 79 /* TODO */ 80} 81 82static int 83atmegadci_probe(device_t dev) 84{ 85 device_set_desc(dev, "ATMEL OTG integrated USB controller"); 86 return (0); 87} 88 89static int 90atmegadci_attach(device_t dev) 91{ 92 struct atmegadci_super_softc *sc = device_get_softc(dev); 93 int err; 94 int rid; 95 96 /* setup MUSB OTG USB controller interface softc */ 97 sc->sc_otg.sc_clocks_on = &atmegadci_clocks_on; 98 sc->sc_otg.sc_clocks_off = &atmegadci_clocks_off; 99 100 /* initialise some bus fields */ 101 sc->sc_otg.sc_bus.parent = dev; 102 sc->sc_otg.sc_bus.devices = sc->sc_otg.sc_devices; 103 sc->sc_otg.sc_bus.devices_max = ATMEGA_MAX_DEVICES; 104 105 /* get all DMA memory */ 106 if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus, 107 USB_GET_DMA_TAG(dev), NULL)) { 108 return (ENOMEM); 109 } 110 rid = 0; 111 sc->sc_otg.sc_io_res = 112 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 113 114 if (!(sc->sc_otg.sc_io_res)) { 115 err = ENOMEM; 116 goto error; 117 } 118 sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res); 119 sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res); 120 121 rid = 0; 122 sc->sc_otg.sc_irq_res = 123 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 124 if (!(sc->sc_otg.sc_irq_res)) { 125 goto error; 126 } 127 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); 128 if (!(sc->sc_otg.sc_bus.bdev)) { 129 goto error; 130 } 131 device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus); 132 133 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 134 NULL, (driver_intr_t *)atmegadci_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 135 if (err) { 136 sc->sc_otg.sc_intr_hdl = NULL; 137 goto error; 138 } 139 err = atmegadci_init(&sc->sc_otg); 140 if (!err) { 141 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); 142 } 143 if (err) { 144 goto error; 145 } 146 return (0); 147 148error: 149 atmegadci_detach(dev); 150 return (ENXIO); 151} 152 153static int 154atmegadci_detach(device_t dev) 155{ 156 struct atmegadci_super_softc *sc = device_get_softc(dev); 157 device_t bdev; 158 int err; 159 160 if (sc->sc_otg.sc_bus.bdev) { 161 bdev = sc->sc_otg.sc_bus.bdev; 162 device_detach(bdev); 163 device_delete_child(dev, bdev); 164 } 165 /* during module unload there are lots of children leftover */ 166 device_delete_children(dev); 167 168 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) { 169 /* 170 * only call atmegadci_uninit() after atmegadci_init() 171 */ 172 atmegadci_uninit(&sc->sc_otg); 173 174 err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res, 175 sc->sc_otg.sc_intr_hdl); 176 sc->sc_otg.sc_intr_hdl = NULL; 177 } 178 /* free IRQ channel, if any */ 179 if (sc->sc_otg.sc_irq_res) { 180 bus_release_resource(dev, SYS_RES_IRQ, 0, 181 sc->sc_otg.sc_irq_res); 182 sc->sc_otg.sc_irq_res = NULL; 183 } 184 /* free memory resource, if any */ 185 if (sc->sc_otg.sc_io_res) { 186 bus_release_resource(dev, SYS_RES_MEMORY, 0, 187 sc->sc_otg.sc_io_res); 188 sc->sc_otg.sc_io_res = NULL; 189 } 190 usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL); 191 192 return (0); 193} 194 195static device_method_t atmegadci_methods[] = { 196 /* Device interface */ 197 DEVMETHOD(device_probe, atmegadci_probe), 198 DEVMETHOD(device_attach, atmegadci_attach), 199 DEVMETHOD(device_detach, atmegadci_detach), 200 DEVMETHOD(device_suspend, bus_generic_suspend), 201 DEVMETHOD(device_resume, bus_generic_resume), 202 DEVMETHOD(device_shutdown, bus_generic_shutdown), 203 204 DEVMETHOD_END 205}; 206 207static driver_t atmegadci_driver = { 208 .name = "atmegadci", 209 .methods = atmegadci_methods, 210 .size = sizeof(struct atmegadci_super_softc), 211}; 212 213static devclass_t atmegadci_devclass; 214 215DRIVER_MODULE(atmegadci, atmelarm, atmegadci_driver, atmegadci_devclass, 0, 0); 216MODULE_DEPEND(atmegadci, usb, 1, 1, 1); 217