ohci_ec.c revision 228483
1/*- 2 * Copyright (c) 2009 Yohanes Nugroho <yohanes@gmail.com> 3 * 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 ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26#include <sys/cdefs.h> 27__FBSDID("$FreeBSD: head/sys/arm/econa/ohci_ec.c 228483 2011-12-14 00:28:54Z 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/ohci.h> 59#include <dev/usb/controller/ohcireg.h> 60 61#include <sys/rman.h> 62 63#include <arm/econa/econa_reg.h> 64 65#define MEM_RID 0 66 67static device_probe_t ohci_ec_probe; 68static device_attach_t ohci_ec_attach; 69static device_detach_t ohci_ec_detach; 70 71struct ec_ohci_softc { 72 struct ohci_softc sc_ohci; /* must be first */ 73}; 74 75static int 76ohci_ec_probe(device_t dev) 77{ 78 device_set_desc(dev, "Econa integrated OHCI controller"); 79 return (BUS_PROBE_DEFAULT); 80} 81 82static int 83ohci_ec_attach(device_t dev) 84{ 85 struct ec_ohci_softc *sc = device_get_softc(dev); 86 bus_space_handle_t bsh; 87 int err; 88 int rid; 89 90 /* initialise some bus fields */ 91 sc->sc_ohci.sc_bus.parent = dev; 92 sc->sc_ohci.sc_bus.devices = sc->sc_ohci.sc_devices; 93 sc->sc_ohci.sc_bus.devices_max = OHCI_MAX_DEVICES; 94 95 /* get all DMA memory */ 96 if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus, 97 USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) { 98 return (ENOMEM); 99 } 100 sc->sc_ohci.sc_dev = dev; 101 102 rid = MEM_RID; 103 104 sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, 105 &rid, RF_ACTIVE); 106 107 if (!(sc->sc_ohci.sc_io_res)) { 108 err = ENOMEM; 109 goto error; 110 } 111 sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res); 112 bsh = rman_get_bushandle(sc->sc_ohci.sc_io_res); 113 /* Undocumented magic initialization */ 114 bus_space_write_4((sc)->sc_ohci.sc_io_tag, bsh,0x04, 0x146); 115 116 bus_space_write_4((sc)->sc_ohci.sc_io_tag, bsh,0x44, 0x0200); 117 118 DELAY(1000); 119 120 sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res); 121 122 if (bus_space_subregion(sc->sc_ohci.sc_io_tag, bsh, 0x4000000, 123 sc->sc_ohci.sc_io_size, &sc->sc_ohci.sc_io_hdl) != 0) 124 panic("%s: unable to subregion USB host registers", 125 device_get_name(dev)); 126 127 rid = 0; 128 sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 129 RF_ACTIVE); 130 if (!(sc->sc_ohci.sc_irq_res)) { 131 goto error; 132 } 133 sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1); 134 if (!(sc->sc_ohci.sc_bus.bdev)) { 135 goto error; 136 } 137 device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus); 138 139 strlcpy(sc->sc_ohci.sc_vendor, "Cavium", 140 sizeof(sc->sc_ohci.sc_vendor)); 141 142#if (__FreeBSD_version >= 700031) 143 err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res, 144 INTR_TYPE_BIO | INTR_MPSAFE, NULL, 145 (driver_intr_t *)ohci_interrupt, sc, 146 &sc->sc_ohci.sc_intr_hdl); 147#else 148 err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res, 149 INTR_TYPE_BIO | INTR_MPSAFE, 150 (driver_intr_t *)ohci_interrupt, sc, 151 &sc->sc_ohci.sc_intr_hdl); 152#endif 153 if (err) { 154 sc->sc_ohci.sc_intr_hdl = NULL; 155 goto error; 156 } 157 158 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, 159 OHCI_CONTROL, 0); 160 161 err = ohci_init(&sc->sc_ohci); 162 if (!err) { 163 err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev); 164 } 165 if (err) { 166 goto error; 167 } 168 return (0); 169 170error: 171 ohci_ec_detach(dev); 172 return (ENXIO); 173} 174 175static int 176ohci_ec_detach(device_t dev) 177{ 178 struct ec_ohci_softc *sc = device_get_softc(dev); 179 device_t bdev; 180 int err; 181 182 if (sc->sc_ohci.sc_bus.bdev) { 183 bdev = sc->sc_ohci.sc_bus.bdev; 184 device_detach(bdev); 185 device_delete_child(dev, bdev); 186 } 187 /* during module unload there are lots of children leftover */ 188 device_delete_children(dev); 189 190 bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl, 191 OHCI_CONTROL, 0); 192 193 if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) { 194 /* 195 * only call ohci_detach() after ohci_init() 196 */ 197 ohci_detach(&sc->sc_ohci); 198 199 err = bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res, 200 sc->sc_ohci.sc_intr_hdl); 201 sc->sc_ohci.sc_intr_hdl = NULL; 202 } 203 if (sc->sc_ohci.sc_irq_res) { 204 bus_release_resource(dev, SYS_RES_IRQ, 0, 205 sc->sc_ohci.sc_irq_res); 206 sc->sc_ohci.sc_irq_res = NULL; 207 } 208 if (sc->sc_ohci.sc_io_res) { 209 bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID, 210 sc->sc_ohci.sc_io_res); 211 sc->sc_ohci.sc_io_res = NULL; 212 } 213 usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc); 214 215 return (0); 216} 217 218static device_method_t ohci_methods[] = { 219 /* Device interface */ 220 DEVMETHOD(device_probe, ohci_ec_probe), 221 DEVMETHOD(device_attach, ohci_ec_attach), 222 DEVMETHOD(device_detach, ohci_ec_detach), 223 DEVMETHOD(device_resume, bus_generic_resume), 224 DEVMETHOD(device_suspend, bus_generic_suspend), 225 DEVMETHOD(device_shutdown, bus_generic_shutdown), 226 227 DEVMETHOD_END 228}; 229 230static driver_t ohci_driver = { 231 .name = "ohci", 232 .methods = ohci_methods, 233 .size = sizeof(struct ec_ohci_softc), 234}; 235 236static devclass_t ohci_devclass; 237 238DRIVER_MODULE(ohci, econaarm, ohci_driver, ohci_devclass, 0, 0); 239MODULE_DEPEND(ohci, usb, 1, 1, 1); 240