text: #include <sys/cdefs.h>
  __FBSDID("$FreeBSD: head/sys/dev/usb/controller/uss820dci_atmelarm.c 276717 2015-01-05 20:22:18Z hselasky $");
  
  /*-
   * Copyright (c) 2008 Hans Petter Selasky <hselasky@FreeBSD.org>
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   */
  
  #include <sys/stdint.h>
  #include <sys/stddef.h>
  #include <sys/param.h>
  #include <sys/queue.h>
  #include <sys/types.h>
  #include <sys/systm.h>
  #include <sys/kernel.h>
  #include <sys/bus.h>
  #include <sys/module.h>
  #include <sys/lock.h>
  #include <sys/mutex.h>
  #include <sys/condvar.h>
  #include <sys/sysctl.h>
  #include <sys/sx.h>
  #include <sys/unistd.h>
  #include <sys/callout.h>
  #include <sys/malloc.h>
  #include <sys/priv.h>
  
  #include <dev/usb/usb.h>
  #include <dev/usb/usbdi.h>
  
  #include <dev/usb/usb_core.h>
  #include <dev/usb/usb_busdma.h>
  #include <dev/usb/usb_process.h>
  #include <dev/usb/usb_util.h>
  
  #include <dev/usb/usb_controller.h>
  #include <dev/usb/usb_bus.h>
  #include <dev/usb/controller/uss820dci.h>
  
  #include <sys/rman.h>
  
  static device_probe_t uss820_atmelarm_probe;
  static device_attach_t uss820_atmelarm_attach;
  static device_detach_t uss820_atmelarm_detach;
  
  static device_method_t uss820dci_methods[] = {
  	/* Device interface */
  	DEVMETHOD(device_probe, uss820_atmelarm_probe),
  	DEVMETHOD(device_attach, uss820_atmelarm_attach),
  	DEVMETHOD(device_detach, uss820_atmelarm_detach),
  	DEVMETHOD(device_suspend, bus_generic_suspend),
  	DEVMETHOD(device_resume, bus_generic_resume),
  	DEVMETHOD(device_shutdown, bus_generic_shutdown),
  
  	DEVMETHOD_END
  };
  
  static driver_t uss820dci_driver = {
  	.name = "uss820dci",
  	.methods = uss820dci_methods,
  	.size = sizeof(struct uss820dci_softc),
  };
  
  static devclass_t uss820dci_devclass;
  
  DRIVER_MODULE(uss820dci, atmelarm, uss820dci_driver, uss820dci_devclass, 0, 0);
  MODULE_DEPEND(uss820dci, usb, 1, 1, 1);
  
  static const char *const uss820_desc = "USS820 USB Device Controller";
  
  static int
  uss820_atmelarm_probe(device_t dev)
  {
  	device_set_desc(dev, uss820_desc);
  	return (0);			/* success */
  }
  
  static int
  uss820_atmelarm_attach(device_t dev)
  {
  	struct uss820dci_softc *sc = device_get_softc(dev);
  	int err;
  	int rid;
  
  	/* initialise some bus fields */
  	sc->sc_bus.parent = dev;
  	sc->sc_bus.devices = sc->sc_devices;
  	sc->sc_bus.devices_max = USS820_MAX_DEVICES;
  	sc->sc_bus.dma_bits = 32;
  
  	/* get all DMA memory */
  	if (usb_bus_mem_alloc_all(&sc->sc_bus,
  	    USB_GET_DMA_TAG(dev), NULL)) {
  		return (ENOMEM);
  	}
  	rid = 0;
  	sc->sc_io_res =
  	    bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE);
  
  	if (!sc->sc_io_res) {
  		goto error;
  	}
  	sc->sc_io_tag = rman_get_bustag(sc->sc_io_res);
  	sc->sc_io_hdl = rman_get_bushandle(sc->sc_io_res);
  	sc->sc_io_size = rman_get_size(sc->sc_io_res);
  
  	rid = 0;
  	sc->sc_irq_res = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid,
  	    RF_SHAREABLE | RF_ACTIVE);
  	if (sc->sc_irq_res == NULL) {
  		goto error;
  	}
  	sc->sc_bus.bdev = device_add_child(dev, "usbus", -1);
  	if (!(sc->sc_bus.bdev)) {
  		goto error;
  	}
  	device_set_ivars(sc->sc_bus.bdev, &sc->sc_bus);
  
  	err = bus_setup_intr(dev, sc->sc_irq_res, INTR_TYPE_TTY | INTR_MPSAFE,
  	    uss820dci_filter_interrupt, uss820dci_interrupt, sc, &sc->sc_intr_hdl);
  	if (err) {
  		sc->sc_intr_hdl = NULL;
  		goto error;
  	}
  	err = uss820dci_init(sc);
  	if (err) {
  		device_printf(dev, "Init failed\n");
  		goto error;
  	}
  	err = device_probe_and_attach(sc->sc_bus.bdev);
  	if (err) {
  		device_printf(dev, "USB probe and attach failed\n");
  		goto error;
  	}
  	return (0);
  
  error:
  	uss820_atmelarm_detach(dev);
  	return (ENXIO);
  }
  
  static int
  uss820_atmelarm_detach(device_t dev)
  {
  	struct uss820dci_softc *sc = device_get_softc(dev);
  	device_t bdev;
  	int err;
  
  	if (sc->sc_bus.bdev) {
  		bdev = sc->sc_bus.bdev;
  		device_detach(bdev);
  		device_delete_child(dev, bdev);
  	}
  	/* during module unload there are lots of children leftover */
  	device_delete_children(dev);
  
  	if (sc->sc_irq_res && sc->sc_intr_hdl) {
  		/*
  		 * only call at91_udp_uninit() after at91_udp_init()
  		 */
  		uss820dci_uninit(sc);
  
  		err = bus_teardown_intr(dev, sc->sc_irq_res,
  		    sc->sc_intr_hdl);
  		sc->sc_intr_hdl = NULL;
  	}
  	if (sc->sc_irq_res) {
  		bus_release_resource(dev, SYS_RES_IRQ, 0,
  		    sc->sc_irq_res);
  		sc->sc_irq_res = NULL;
  	}
  	if (sc->sc_io_res) {
  		bus_release_resource(dev, SYS_RES_IOPORT, 0,
  		    sc->sc_io_res);
  		sc->sc_io_res = NULL;
  	}
  	usb_bus_mem_free_all(&sc->sc_bus, NULL);
  
  	return (0);
  }
  