mtk_dotg.c revision 308401
1#include <sys/cdefs.h> 2__FBSDID("$FreeBSD: stable/11/sys/mips/mediatek/mtk_dotg.c 308401 2016-11-07 08:36:06Z hselasky $"); 3 4/*- 5 * Copyright (c) 2015-2016 Stanislav Galabov. All rights reserved. 6 * Copyright (c) 2010,2011 Aleksandr Rybalko. All rights reserved. 7 * Copyright (c) 2007-2008 Hans Petter Selasky. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 31#include <sys/stdint.h> 32#include <sys/stddef.h> 33#include <sys/param.h> 34#include <sys/queue.h> 35#include <sys/types.h> 36#include <sys/systm.h> 37#include <sys/kernel.h> 38#include <sys/bus.h> 39#include <sys/module.h> 40#include <sys/lock.h> 41#include <sys/mutex.h> 42#include <sys/condvar.h> 43#include <sys/sysctl.h> 44#include <sys/sx.h> 45#include <sys/unistd.h> 46#include <sys/callout.h> 47#include <sys/malloc.h> 48#include <sys/priv.h> 49#include <sys/rman.h> 50 51#include <dev/usb/usb.h> 52#include <dev/usb/usbdi.h> 53 54#include <dev/usb/usb_core.h> 55#include <dev/usb/usb_busdma.h> 56#include <dev/usb/usb_process.h> 57#include <dev/usb/usb_util.h> 58 59#include <dev/usb/usb_controller.h> 60#include <dev/usb/usb_bus.h> 61 62#include <dev/usb/controller/dwc_otg.h> 63 64#include <dev/ofw/openfirm.h> 65#include <dev/ofw/ofw_bus.h> 66#include <dev/ofw/ofw_bus_subr.h> 67 68#define MEM_RID 0 69 70static device_probe_t dotg_fdt_probe; 71static device_attach_t dotg_fdt_attach; 72static device_detach_t dotg_fdt_detach; 73 74static int 75dotg_fdt_probe(device_t dev) 76{ 77 78 if (!ofw_bus_status_okay(dev)) 79 return (ENXIO); 80 81 if (!ofw_bus_is_compatible(dev, "ralink,rt3050-otg")) 82 return (ENXIO); 83 84 device_set_desc(dev, "MTK DWC-OTG USB Controller"); 85 return (0); 86} 87 88static int 89dotg_fdt_attach(device_t dev) 90{ 91 struct dwc_otg_softc *sc = device_get_softc(dev); 92 int err, rid; 93 94 /* setup controller interface softc */ 95 96 /* initialise some bus fields */ 97 sc->sc_mode = DWC_MODE_HOST; 98 sc->sc_bus.parent = dev; 99 sc->sc_bus.devices = sc->sc_devices; 100 sc->sc_bus.devices_max = DWC_OTG_MAX_DEVICES; 101 sc->sc_bus.dma_bits = 32; 102 103 /* get all DMA memory */ 104 if (usb_bus_mem_alloc_all(&sc->sc_bus, 105 USB_GET_DMA_TAG(dev), NULL)) { 106 printf("No mem\n"); 107 return (ENOMEM); 108 } 109 rid = 0; 110 sc->sc_io_res = 111 bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); 112 if (!(sc->sc_io_res)) { 113 printf("Can`t alloc MEM\n"); 114 goto error; 115 } 116 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 117 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 118 sc->sc_io_size = rman_get_size(sc->sc_io_res); 119 120 rid = 0; 121 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, 122 &rid, RF_ACTIVE); 123 if (!(sc->sc_irq_res)) { 124 printf("Can`t alloc IRQ\n"); 125 goto error; 126 } 127 128 sc->sc_bus.bdev = device_add_child(dev, "usbus", -1); 129 if (!(sc->sc_bus.bdev)) { 130 printf("Can`t add usbus\n"); 131 goto error; 132 } 133 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 134 135 err = bus_setup_intr(dev, sc->sc_irq_res, 136 INTR_TYPE_TTY | INTR_MPSAFE, dwc_otg_filter_interrupt, 137 dwc_otg_interrupt, sc, &sc->sc_intr_hdl); 138 if (err) { 139 sc->sc_intr_hdl = NULL; 140 printf("Can`t set IRQ handle\n"); 141 goto error; 142 } 143 144 err = dwc_otg_init(sc); 145 if (err) printf("dotg_init fail\n"); 146 if (!err) { 147 err = device_probe_and_attach(sc->sc_bus.bdev); 148 if (err) printf("device_probe_and_attach fail %d\n", err); 149 } 150 if (err) { 151 goto error; 152 } 153 return (0); 154 155error: 156 dotg_fdt_detach(dev); 157 return (ENXIO); 158} 159 160static int 161dotg_fdt_detach(device_t dev) 162{ 163 struct dwc_otg_softc *sc = device_get_softc(dev); 164 int err; 165 166 /* during module unload there are lots of children leftover */ 167 device_delete_children(dev); 168 169 if (sc->sc_irq_res && sc->sc_intr_hdl) { 170 /* 171 * only call dotg_fdt_uninit() after dotg_fdt_init() 172 */ 173 dwc_otg_uninit(sc); 174 175 err = bus_teardown_intr(dev, sc->sc_irq_res, 176 sc->sc_intr_hdl); 177 sc->sc_intr_hdl = NULL; 178 } 179 if (sc->sc_irq_res) { 180 bus_release_resource(dev, SYS_RES_IRQ, 0, 181 sc->sc_irq_res); 182 sc->sc_irq_res = NULL; 183 } 184 if (sc->sc_io_res) { 185 bus_release_resource(dev, SYS_RES_MEMORY, 0, 186 sc->sc_io_res); 187 sc->sc_io_res = NULL; 188 } 189 usb_bus_mem_free_all(&sc->sc_bus, NULL); 190 191 return (0); 192} 193 194static device_method_t dotg_fdt_methods[] = { 195 /* Device interface */ 196 DEVMETHOD(device_probe, dotg_fdt_probe), 197 DEVMETHOD(device_attach, dotg_fdt_attach), 198 DEVMETHOD(device_detach, dotg_fdt_detach), 199 DEVMETHOD(device_suspend, bus_generic_suspend), 200 DEVMETHOD(device_resume, bus_generic_resume), 201 DEVMETHOD(device_shutdown, bus_generic_shutdown), 202 203 DEVMETHOD_END 204}; 205 206static driver_t dotg_fdt_driver = { 207 .name = "dwcotg", 208 .methods = dotg_fdt_methods, 209 .size = sizeof(struct dwc_otg_softc), 210}; 211 212static devclass_t dotg_fdt_devclass; 213 214DRIVER_MODULE(dotg, simplebus, dotg_fdt_driver, dotg_fdt_devclass, 0, 0); 215