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/mips/mediatek/mtk_dotg.c

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    1 #include <sys/cdefs.h>
    2 __FBSDID("$FreeBSD: stable/12/sys/mips/mediatek/mtk_dotg.c 307518 2016-10-17 10:20:38Z 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 
   70 static device_probe_t dotg_fdt_probe;
   71 static device_attach_t dotg_fdt_attach;
   72 static device_detach_t dotg_fdt_detach;
   73 
   74 static int
   75 dotg_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 
   88 static int
   89 dotg_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 
  155 error:
  156         dotg_fdt_detach(dev);
  157         return (ENXIO);
  158 }
  159 
  160 static int
  161 dotg_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 
  194 static 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 
  206 static driver_t dotg_fdt_driver = {
  207         .name = "dwcotg",
  208         .methods = dotg_fdt_methods,
  209         .size = sizeof(struct dwc_otg_softc),
  210 };
  211 
  212 static devclass_t dotg_fdt_devclass;
  213 
  214 DRIVER_MODULE(dotg, simplebus, dotg_fdt_driver, dotg_fdt_devclass, 0, 0);

Cache object: 8dc3f2720f06fa97cae8889ba34f2afa


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