The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/arm/econa/ohci_ec.c

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    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: releng/10.0/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 
   67 static device_probe_t ohci_ec_probe;
   68 static device_attach_t ohci_ec_attach;
   69 static device_detach_t ohci_ec_detach;
   70 
   71 struct ec_ohci_softc {
   72         struct ohci_softc sc_ohci;      /* must be first */
   73 };
   74 
   75 static int
   76 ohci_ec_probe(device_t dev)
   77 {
   78         device_set_desc(dev, "Econa integrated OHCI controller");
   79         return (BUS_PROBE_DEFAULT);
   80 }
   81 
   82 static int
   83 ohci_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 
  170 error:
  171         ohci_ec_detach(dev);
  172         return (ENXIO);
  173 }
  174 
  175 static int
  176 ohci_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 
  218 static 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 
  230 static driver_t ohci_driver = {
  231         .name = "ohci",
  232         .methods = ohci_methods,
  233         .size = sizeof(struct ec_ohci_softc),
  234 };
  235 
  236 static devclass_t ohci_devclass;
  237 
  238 DRIVER_MODULE(ohci, econaarm, ohci_driver, ohci_devclass, 0, 0);
  239 MODULE_DEPEND(ohci, usb, 1, 1, 1);

Cache object: 3d14150d43cb424f35c126475ef5d994


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