ohci_s3c24x0.c revision 331722
1/*- 2 * Copyright (c) 2006 M. Warner Losh. All rights reserved. 3 * Copyright (c) 2009 Andrew Turner. 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: stable/11/sys/dev/usb/controller/ohci_s3c24x0.c 331722 2018-03-29 02:50:57Z eadler $"); 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/samsung/s3c2xx0/s3c24x0reg.h> 64 65static device_probe_t ohci_s3c24x0_probe; 66static device_attach_t ohci_s3c24x0_attach; 67static device_detach_t ohci_s3c24x0_detach; 68 69static int 70ohci_s3c24x0_probe(device_t dev) 71{ 72 device_set_desc(dev, "S3C24x0 integrated OHCI controller"); 73 return (BUS_PROBE_DEFAULT); 74} 75 76static int 77ohci_s3c24x0_attach(device_t dev) 78{ 79 struct ohci_softc *sc = device_get_softc(dev); 80 int err; 81 int rid; 82 83 /* initialise some bus fields */ 84 sc->sc_bus.parent = dev; 85 sc->sc_bus.devices = sc->sc_devices; 86 sc->sc_bus.devices_max = OHCI_MAX_DEVICES; 87 sc->sc_bus.dma_bits = 32; 88 89 /* get all DMA memory */ 90 if (usb_bus_mem_alloc_all(&sc->sc_bus, USB_GET_DMA_TAG(dev), 91 &ohci_iterate_hw_softc)) { 92 return (ENOMEM); 93 } 94 95 sc->sc_dev = dev; 96 97 rid = 0; 98 sc->sc_io_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, 99 &rid, RF_ACTIVE); 100 101 if (!(sc->sc_io_res)) { 102 err = ENOMEM; 103 goto error; 104 } 105 sc->sc_io_tag = rman_get_bustag(sc->sc_io_res); 106 sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res); 107 sc->sc_io_size = rman_get_size(sc->sc_io_res); 108 109 rid = 0; 110 sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, 111 RF_ACTIVE); 112 if (!(sc->sc_irq_res)) { 113 goto error; 114 } 115 sc->sc_bus.bdev = device_add_child(dev, "usbus", -1); 116 if (!(sc->sc_bus.bdev)) { 117 goto error; 118 } 119 device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus); 120 121 strlcpy(sc->sc_vendor, "Samsung", sizeof(sc->sc_vendor)); 122 123 err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_BIO | INTR_MPSAFE, 124 NULL, (void *)ohci_interrupt, sc, &sc->sc_intr_hdl); 125 if (err) { 126 sc->sc_intr_hdl = NULL; 127 goto error; 128 } 129 130 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, 131 OHCI_CONTROL, 0); 132 133 err = ohci_init(sc); 134 if (!err) { 135 err = device_probe_and_attach(sc->sc_bus.bdev); 136 } 137 if (err) { 138 goto error; 139 } 140 return (0); 141 142error: 143 ohci_s3c24x0_detach(dev); 144 return (ENXIO); 145} 146 147static int 148ohci_s3c24x0_detach(device_t dev) 149{ 150 struct ohci_softc *sc = device_get_softc(dev); 151 int err; 152 153 /* during module unload there are lots of children leftover */ 154 device_delete_children(dev); 155 156 /* 157 * Put the controller into reset, then disable clocks and do 158 * the MI tear down. We have to disable the clocks/hardware 159 * after we do the rest of the teardown. We also disable the 160 * clocks in the opposite order we acquire them, but that 161 * doesn't seem to be absolutely necessary. We free up the 162 * clocks after we disable them, so the system could, in 163 * theory, reuse them. 164 */ 165 bus_space_write_4(sc->sc_io_tag, sc->sc_io_hdl, 166 OHCI_CONTROL, 0); 167 168 if (sc->sc_irq_res && sc->sc_intr_hdl) { 169 /* 170 * only call ohci_detach() after ohci_init() 171 */ 172 ohci_detach(sc); 173 174 err = bus_teardown_intr(dev, sc->sc_irq_res, sc->sc_intr_hdl); 175 sc->sc_intr_hdl = NULL; 176 } 177 if (sc->sc_irq_res) { 178 bus_release_resource(dev, SYS_RES_IRQ, 0, sc->sc_irq_res); 179 sc->sc_irq_res = NULL; 180 } 181 if (sc->sc_io_res) { 182 bus_release_resource(dev, SYS_RES_MEMORY, 0, 183 sc->sc_io_res); 184 sc->sc_io_res = NULL; 185 } 186 usb_bus_mem_free_all(&sc->sc_bus, &ohci_iterate_hw_softc); 187 188 return (0); 189} 190 191static device_method_t ohci_methods[] = { 192 /* Device interface */ 193 DEVMETHOD(device_probe, ohci_s3c24x0_probe), 194 DEVMETHOD(device_attach, ohci_s3c24x0_attach), 195 DEVMETHOD(device_detach, ohci_s3c24x0_detach), 196 DEVMETHOD(device_suspend, bus_generic_suspend), 197 DEVMETHOD(device_resume, bus_generic_resume), 198 DEVMETHOD(device_shutdown, bus_generic_shutdown), 199 200 DEVMETHOD_END 201}; 202 203static driver_t ohci_driver = { 204 .name = "ohci", 205 .methods = ohci_methods, 206 .size = sizeof(struct ohci_softc), 207}; 208 209static devclass_t ohci_devclass; 210 211DRIVER_MODULE(ohci, s3c24x0, ohci_driver, ohci_devclass, 0, 0); 212MODULE_DEPEND(ohci, usb, 1, 1, 1); 213