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("$FreeBSD$");
   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         sc->sc_ohci.sc_bus.dma_bits = 32;
   95 
   96         /* get all DMA memory */
   97         if (usb_bus_mem_alloc_all(&sc->sc_ohci.sc_bus,
   98             USB_GET_DMA_TAG(dev), &ohci_iterate_hw_softc)) {
   99                 return (ENOMEM);
  100         }
  101         sc->sc_ohci.sc_dev = dev;
  102 
  103         rid = MEM_RID;
  104 
  105         sc->sc_ohci.sc_io_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
  106             &rid, RF_ACTIVE);
  107 
  108         if (!(sc->sc_ohci.sc_io_res)) {
  109                 err = ENOMEM;
  110                 goto error;
  111         }
  112         sc->sc_ohci.sc_io_tag = rman_get_bustag(sc->sc_ohci.sc_io_res);
  113         bsh = rman_get_bushandle(sc->sc_ohci.sc_io_res);
  114         /* Undocumented magic initialization */
  115         bus_space_write_4((sc)->sc_ohci.sc_io_tag, bsh,0x04, 0x146);
  116 
  117         bus_space_write_4((sc)->sc_ohci.sc_io_tag, bsh,0x44, 0x0200);
  118 
  119         DELAY(1000);
  120 
  121         sc->sc_ohci.sc_io_size = rman_get_size(sc->sc_ohci.sc_io_res);
  122 
  123         if (bus_space_subregion(sc->sc_ohci.sc_io_tag, bsh, 0x4000000,
  124             sc->sc_ohci.sc_io_size, &sc->sc_ohci.sc_io_hdl) != 0)
  125                 panic("%s: unable to subregion USB host registers",
  126                     device_get_name(dev));
  127 
  128         rid = 0;
  129         sc->sc_ohci.sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
  130             RF_ACTIVE);
  131         if (!(sc->sc_ohci.sc_irq_res)) {
  132                 goto error;
  133         }
  134         sc->sc_ohci.sc_bus.bdev = device_add_child(dev, "usbus", -1);
  135         if (!(sc->sc_ohci.sc_bus.bdev)) {
  136                 goto error;
  137         }
  138         device_set_ivars(sc->sc_ohci.sc_bus.bdev, &sc->sc_ohci.sc_bus);
  139 
  140         strlcpy(sc->sc_ohci.sc_vendor, "Cavium",
  141                 sizeof(sc->sc_ohci.sc_vendor));
  142 
  143 #if (__FreeBSD_version >= 700031)
  144         err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res,
  145             INTR_TYPE_BIO | INTR_MPSAFE,  NULL,
  146             (driver_intr_t *)ohci_interrupt, sc,
  147             &sc->sc_ohci.sc_intr_hdl);
  148 #else
  149         err = bus_setup_intr(dev, sc->sc_ohci.sc_irq_res,
  150             INTR_TYPE_BIO | INTR_MPSAFE,
  151             (driver_intr_t *)ohci_interrupt, sc,
  152             &sc->sc_ohci.sc_intr_hdl);
  153 #endif
  154         if (err) {
  155                 sc->sc_ohci.sc_intr_hdl = NULL;
  156                 goto error;
  157         }
  158 
  159         bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
  160             OHCI_CONTROL, 0);
  161 
  162         err = ohci_init(&sc->sc_ohci);
  163         if (!err) {
  164                 err = device_probe_and_attach(sc->sc_ohci.sc_bus.bdev);
  165         }
  166         if (err) {
  167                 goto error;
  168         }
  169         return (0);
  170 
  171 error:
  172         ohci_ec_detach(dev);
  173         return (ENXIO);
  174 }
  175 
  176 static int
  177 ohci_ec_detach(device_t dev)
  178 {
  179         struct ec_ohci_softc *sc = device_get_softc(dev);
  180         device_t bdev;
  181         int err;
  182 
  183         if (sc->sc_ohci.sc_bus.bdev) {
  184                 bdev = sc->sc_ohci.sc_bus.bdev;
  185                 device_detach(bdev);
  186                 device_delete_child(dev, bdev);
  187         }
  188         /* during module unload there are lots of children leftover */
  189         device_delete_children(dev);
  190 
  191         bus_space_write_4(sc->sc_ohci.sc_io_tag, sc->sc_ohci.sc_io_hdl,
  192             OHCI_CONTROL, 0);
  193 
  194         if (sc->sc_ohci.sc_irq_res && sc->sc_ohci.sc_intr_hdl) {
  195                 /*
  196                  * only call ohci_detach() after ohci_init()
  197                  */
  198                 ohci_detach(&sc->sc_ohci);
  199 
  200                 err = bus_teardown_intr(dev, sc->sc_ohci.sc_irq_res,
  201                     sc->sc_ohci.sc_intr_hdl);
  202                 sc->sc_ohci.sc_intr_hdl = NULL;
  203         }
  204         if (sc->sc_ohci.sc_irq_res) {
  205                 bus_release_resource(dev, SYS_RES_IRQ, 0,
  206                     sc->sc_ohci.sc_irq_res);
  207                 sc->sc_ohci.sc_irq_res = NULL;
  208         }
  209         if (sc->sc_ohci.sc_io_res) {
  210                 bus_release_resource(dev, SYS_RES_MEMORY, MEM_RID,
  211                     sc->sc_ohci.sc_io_res);
  212                 sc->sc_ohci.sc_io_res = NULL;
  213         }
  214         usb_bus_mem_free_all(&sc->sc_ohci.sc_bus, &ohci_iterate_hw_softc);
  215 
  216         return (0);
  217 }
  218 
  219 static device_method_t ohci_methods[] = {
  220         /* Device interface */
  221         DEVMETHOD(device_probe, ohci_ec_probe),
  222         DEVMETHOD(device_attach, ohci_ec_attach),
  223         DEVMETHOD(device_detach, ohci_ec_detach),
  224         DEVMETHOD(device_resume, bus_generic_resume),
  225         DEVMETHOD(device_suspend, bus_generic_suspend),
  226         DEVMETHOD(device_shutdown, bus_generic_shutdown),
  227 
  228         DEVMETHOD_END
  229 };
  230 
  231 static driver_t ohci_driver = {
  232         .name = "ohci",
  233         .methods = ohci_methods,
  234         .size = sizeof(struct ec_ohci_softc),
  235 };
  236 
  237 static devclass_t ohci_devclass;
  238 
  239 DRIVER_MODULE(ohci, econaarm, ohci_driver, ohci_devclass, 0, 0);
  240 MODULE_DEPEND(ohci, usb, 1, 1, 1);

Cache object: 300c189649548ce232498a835fda1c9c

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

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