atmegadci_atmelarm.c revision 331722
1#include <sys/cdefs.h> 2__FBSDID("$FreeBSD: stable/11/sys/dev/usb/controller/atmegadci_atmelarm.c 331722 2018-03-29 02:50:57Z eadler $"); 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 sc->sc_otg.sc_bus.dma_bits = 32; 105 106 /* get all DMA memory */ 107 if (usb_bus_mem_alloc_all(&sc->sc_otg.sc_bus, 108 USB_GET_DMA_TAG(dev), NULL)) { 109 return (ENOMEM); 110 } 111 rid = 0; 112 sc->sc_otg.sc_io_res = 113 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 114 115 if (!(sc->sc_otg.sc_io_res)) { 116 err = ENOMEM; 117 goto error; 118 } 119 sc->sc_otg.sc_io_tag = rman_get_bustag(sc->sc_otg.sc_io_res); 120 sc->sc_otg.sc_io_hdl = rman_get_bushandle(sc->sc_otg.sc_io_res); 121 122 rid = 0; 123 sc->sc_otg.sc_irq_res = 124 bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_ACTIVE); 125 if (!(sc->sc_otg.sc_irq_res)) { 126 goto error; 127 } 128 sc->sc_otg.sc_bus.bdev = device_add_child(dev, "usbus", -1); 129 if (!(sc->sc_otg.sc_bus.bdev)) { 130 goto error; 131 } 132 device_set_ivars(sc->sc_otg.sc_bus.bdev, &sc->sc_otg.sc_bus); 133 134 err = bus_setup_intr(dev, sc->sc_otg.sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 135 NULL, (driver_intr_t *)atmegadci_interrupt, sc, &sc->sc_otg.sc_intr_hdl); 136 if (err) { 137 sc->sc_otg.sc_intr_hdl = NULL; 138 goto error; 139 } 140 err = atmegadci_init(&sc->sc_otg); 141 if (!err) { 142 err = device_probe_and_attach(sc->sc_otg.sc_bus.bdev); 143 } 144 if (err) { 145 goto error; 146 } 147 return (0); 148 149error: 150 atmegadci_detach(dev); 151 return (ENXIO); 152} 153 154static int 155atmegadci_detach(device_t dev) 156{ 157 struct atmegadci_super_softc *sc = device_get_softc(dev); 158 int err; 159 160 /* during module unload there are lots of children leftover */ 161 device_delete_children(dev); 162 163 if (sc->sc_otg.sc_irq_res && sc->sc_otg.sc_intr_hdl) { 164 /* 165 * only call atmegadci_uninit() after atmegadci_init() 166 */ 167 atmegadci_uninit(&sc->sc_otg); 168 169 err = bus_teardown_intr(dev, sc->sc_otg.sc_irq_res, 170 sc->sc_otg.sc_intr_hdl); 171 sc->sc_otg.sc_intr_hdl = NULL; 172 } 173 /* free IRQ channel, if any */ 174 if (sc->sc_otg.sc_irq_res) { 175 bus_release_resource(dev, SYS_RES_IRQ, 0, 176 sc->sc_otg.sc_irq_res); 177 sc->sc_otg.sc_irq_res = NULL; 178 } 179 /* free memory resource, if any */ 180 if (sc->sc_otg.sc_io_res) { 181 bus_release_resource(dev, SYS_RES_MEMORY, 0, 182 sc->sc_otg.sc_io_res); 183 sc->sc_otg.sc_io_res = NULL; 184 } 185 usb_bus_mem_free_all(&sc->sc_otg.sc_bus, NULL); 186 187 return (0); 188} 189 190static device_method_t atmegadci_methods[] = { 191 /* Device interface */ 192 DEVMETHOD(device_probe, atmegadci_probe), 193 DEVMETHOD(device_attach, atmegadci_attach), 194 DEVMETHOD(device_detach, atmegadci_detach), 195 DEVMETHOD(device_suspend, bus_generic_suspend), 196 DEVMETHOD(device_resume, bus_generic_resume), 197 DEVMETHOD(device_shutdown, bus_generic_shutdown), 198 199 DEVMETHOD_END 200}; 201 202static driver_t atmegadci_driver = { 203 .name = "atmegadci", 204 .methods = atmegadci_methods, 205 .size = sizeof(struct atmegadci_super_softc), 206}; 207 208static devclass_t atmegadci_devclass; 209 210DRIVER_MODULE(atmegadci, atmelarm, atmegadci_driver, atmegadci_devclass, 0, 0); 211MODULE_DEPEND(atmegadci, usb, 1, 1, 1); 212