546 lines
16 KiB
C
546 lines
16 KiB
C
/* $NetBSD: uhub.c,v 1.32 1999/10/13 08:10:56 augustss Exp $ */
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/*
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Lennart Augustsson (augustss@carlstedt.se) at
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* Carlstedt Research & Technology.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* USB spec: http://www.usb.org/cgi-usb/mailmerge.cgi/home/usb/docs/developers/cgiform.tpl
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*/
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/malloc.h>
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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#include <sys/device.h>
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#elif defined(__FreeBSD__)
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#include <sys/module.h>
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#include <sys/bus.h>
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#include "bus_if.h"
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#endif
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#include <sys/proc.h>
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#include <machine/bus.h>
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#include <dev/usb/usb.h>
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#include <dev/usb/usbdi.h>
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#include <dev/usb/usbdi_util.h>
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#include <dev/usb/usbdivar.h>
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#ifdef UHUB_DEBUG
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#define DPRINTF(x) if (usbdebug) logprintf x
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#define DPRINTFN(n,x) if (usbdebug>(n)) logprintf x
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extern int usbdebug;
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#else
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#define DPRINTF(x)
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#define DPRINTFN(n,x)
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#endif
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struct uhub_softc {
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USBBASEDEVICE sc_dev; /* base device */
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usbd_device_handle sc_hub; /* USB device */
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usbd_pipe_handle sc_ipipe; /* interrupt pipe */
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u_int8_t sc_status[1]; /* XXX more ports */
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u_char sc_running;
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};
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usbd_status uhub_init_port __P((struct usbd_port *));
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usbd_status uhub_explore __P((usbd_device_handle hub));
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void uhub_intr __P((usbd_request_handle, usbd_private_handle, usbd_status));
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#if defined(__FreeBSD__)
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static bus_child_detached_t uhub_child_detached;
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#endif
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USB_DECLARE_DRIVER_INIT(uhub,
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DEVMETHOD(bus_child_detached, uhub_child_detached));
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/*
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* We need two attachment points:
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* hub to usb and hub to hub
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* Every other driver only connects to hubs
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*/
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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/* Create the driver instance for the hub connected to hub case */
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struct cfattach uhub_uhub_ca = {
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sizeof(struct uhub_softc), uhub_match, uhub_attach,
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uhub_detach, uhub_activate
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};
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#elif defined(__FreeBSD__)
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/* Create the driver instance for the hub connected to usb case. */
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devclass_t uhubroot_devclass;
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static device_method_t uhubroot_methods[] = {
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DEVMETHOD(device_probe, uhub_match),
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DEVMETHOD(device_attach, uhub_attach),
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/* detach is not allowed for a root hub */
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{0,0}
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};
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static driver_t uhubroot_driver = {
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"uhub",
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uhubroot_methods,
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sizeof(struct uhub_softc)
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};
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#endif
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USB_MATCH(uhub)
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{
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USB_MATCH_START(uhub, uaa);
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usb_device_descriptor_t *dd = usbd_get_device_descriptor(uaa->device);
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DPRINTFN(5,("uhub_match, dd=%p\n", dd));
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/*
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* The subclass for hubs seems to be 0 for some and 1 for others,
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* so we just ignore the subclass.
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*/
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if (uaa->iface == 0 && dd->bDeviceClass == UCLASS_HUB)
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return (UMATCH_DEVCLASS_DEVSUBCLASS);
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return (UMATCH_NONE);
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}
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USB_ATTACH(uhub)
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{
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USB_ATTACH_START(uhub, sc, uaa);
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usbd_device_handle dev = uaa->device;
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char devinfo[1024];
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usbd_status r;
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struct usbd_hub *hub;
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usb_device_request_t req;
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usb_hub_descriptor_t hubdesc;
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int p, port, nports, nremov;
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usbd_interface_handle iface;
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usb_endpoint_descriptor_t *ed;
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DPRINTFN(1,("uhub_attach\n"));
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sc->sc_hub = dev;
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usbd_devinfo(dev, 1, devinfo);
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USB_ATTACH_SETUP;
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printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo);
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r = usbd_set_config_index(dev, 0, 1);
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if (r != USBD_NORMAL_COMPLETION) {
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DPRINTF(("%s: configuration failed, error=%s\n",
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USBDEVNAME(sc->sc_dev), usbd_errstr(r)));
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USB_ATTACH_ERROR_RETURN;
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}
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if (dev->depth > USB_HUB_MAX_DEPTH) {
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printf("%s: hub depth (%d) exceeded, hub ignored\n",
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USBDEVNAME(sc->sc_dev), USB_HUB_MAX_DEPTH);
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USB_ATTACH_ERROR_RETURN;
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}
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/* Get hub descriptor. */
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req.bmRequestType = UT_READ_CLASS_DEVICE;
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req.bRequest = UR_GET_DESCRIPTOR;
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USETW(req.wValue, 0);
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USETW(req.wIndex, 0);
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USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE);
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DPRINTFN(1,("usb_init_hub: getting hub descriptor\n"));
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r = usbd_do_request(dev, &req, &hubdesc);
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nports = hubdesc.bNbrPorts;
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if (r == USBD_NORMAL_COMPLETION && nports > 7) {
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USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8);
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r = usbd_do_request(dev, &req, &hubdesc);
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}
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if (r != USBD_NORMAL_COMPLETION) {
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DPRINTF(("%s: getting hub descriptor failed, error=%s\n",
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USBDEVNAME(sc->sc_dev), usbd_errstr(r)));
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USB_ATTACH_ERROR_RETURN;
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}
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for (nremov = 0, port = 1; port <= nports; port++)
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if (!UHD_NOT_REMOV(&hubdesc, port))
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nremov++;
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printf("%s: %d port%s with %d removable, %s powered\n",
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USBDEVNAME(sc->sc_dev), nports, nports != 1 ? "s" : "",
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nremov, dev->self_powered ? "self" : "bus");
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hub = malloc(sizeof(*hub) + (nports-1) * sizeof(struct usbd_port),
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M_USBDEV, M_NOWAIT);
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if (hub == 0)
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USB_ATTACH_ERROR_RETURN;
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dev->hub = hub;
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dev->hub->hubsoftc = sc;
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hub->explore = uhub_explore;
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hub->hubdesc = hubdesc;
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DPRINTFN(1,("usbhub_init_hub: selfpowered=%d, parent=%p, "
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"parent->selfpowered=%d\n",
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dev->self_powered, dev->powersrc->parent,
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dev->powersrc->parent ?
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dev->powersrc->parent->self_powered : 0));
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if (!dev->self_powered && dev->powersrc->parent &&
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!dev->powersrc->parent->self_powered) {
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printf("%s: bus powered hub connected to bus powered hub, "
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"ignored\n", USBDEVNAME(sc->sc_dev));
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goto bad;
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}
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/* Set up interrupt pipe. */
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r = usbd_device2interface_handle(dev, 0, &iface);
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if (r != USBD_NORMAL_COMPLETION) {
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printf("%s: no interface handle\n", USBDEVNAME(sc->sc_dev));
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goto bad;
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}
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ed = usbd_interface2endpoint_descriptor(iface, 0);
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if (ed == 0) {
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printf("%s: no endpoint descriptor\n", USBDEVNAME(sc->sc_dev));
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goto bad;
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}
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if ((ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
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printf("%s: bad interrupt endpoint\n", USBDEVNAME(sc->sc_dev));
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goto bad;
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}
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r = usbd_open_pipe_intr(iface, ed->bEndpointAddress,USBD_SHORT_XFER_OK,
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&sc->sc_ipipe, sc, sc->sc_status,
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sizeof(sc->sc_status),
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uhub_intr);
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if (r != USBD_NORMAL_COMPLETION) {
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printf("%s: cannot open interrupt pipe\n",
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USBDEVNAME(sc->sc_dev));
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goto bad;
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}
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/* Wait with power off for a while. */
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usbd_delay_ms(dev, USB_POWER_DOWN_TIME);
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for (p = 0; p < nports; p++) {
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struct usbd_port *up = &hub->ports[p];
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up->device = 0;
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up->parent = dev;
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up->portno = p+1;
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r = uhub_init_port(up);
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if (r != USBD_NORMAL_COMPLETION)
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printf("%s: init of port %d failed\n",
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USBDEVNAME(sc->sc_dev), up->portno);
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}
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sc->sc_running = 1;
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USB_ATTACH_SUCCESS_RETURN;
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bad:
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free(hub, M_USBDEV);
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dev->hub = 0;
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USB_ATTACH_ERROR_RETURN;
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}
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usbd_status
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uhub_init_port(up)
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struct usbd_port *up;
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{
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int port = up->portno;
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usbd_device_handle dev = up->parent;
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usbd_status r;
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u_int16_t pstatus;
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r = usbd_get_port_status(dev, port, &up->status);
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if (r != USBD_NORMAL_COMPLETION)
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return (r);
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pstatus = UGETW(up->status.wPortStatus);
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DPRINTF(("usbd_init_port: adding hub port=%d status=0x%04x "
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"change=0x%04x\n",
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port, pstatus, UGETW(up->status.wPortChange)));
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if ((pstatus & UPS_PORT_POWER) == 0) {
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/* Port lacks power, turn it on */
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/* First let the device go through a good power cycle, */
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usbd_delay_ms(dev, USB_PORT_POWER_DOWN_TIME);
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#if 0
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usbd_clear_hub_feature(dev, UHF_C_HUB_OVER_CURRENT);
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usbd_clear_port_feature(dev, port, UHF_C_PORT_OVER_CURRENT);
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#endif
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/* then turn the power on. */
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r = usbd_set_port_feature(dev, port, UHF_PORT_POWER);
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if (r != USBD_NORMAL_COMPLETION)
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return (r);
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DPRINTF(("usb_init_port: turn on port %d power status=0x%04x "
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"change=0x%04x\n",
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port, UGETW(up->status.wPortStatus),
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UGETW(up->status.wPortChange)));
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/* Wait for stable power. */
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usbd_delay_ms(dev, dev->hub->hubdesc.bPwrOn2PwrGood *
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UHD_PWRON_FACTOR);
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/* Get the port status again. */
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r = usbd_get_port_status(dev, port, &up->status);
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if (r != USBD_NORMAL_COMPLETION)
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return (r);
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DPRINTF(("usb_init_port: after power on status=0x%04x "
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"change=0x%04x\n",
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UGETW(up->status.wPortStatus),
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UGETW(up->status.wPortChange)));
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#if 0
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usbd_clear_hub_feature(dev, UHF_C_HUB_OVER_CURRENT);
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usbd_clear_port_feature(dev, port, UHF_C_PORT_OVER_CURRENT);
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usbd_get_port_status(dev, port, &up->status);
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#endif
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pstatus = UGETW(up->status.wPortStatus);
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if ((pstatus & UPS_PORT_POWER) == 0)
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printf("%s: port %d did not power up\n",
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USBDEVNAME(((struct uhub_softc *)dev->hub->hubsoftc)->sc_dev), port);
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}
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if (dev->self_powered)
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/* Self powered hub, give ports maximum current. */
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up->power = USB_MAX_POWER;
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else
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up->power = USB_MIN_POWER;
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return (USBD_NORMAL_COMPLETION);
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}
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usbd_status
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uhub_explore(dev)
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usbd_device_handle dev;
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{
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usb_hub_descriptor_t *hd = &dev->hub->hubdesc;
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struct uhub_softc *sc = dev->hub->hubsoftc;
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struct usbd_port *up;
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usbd_status r;
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int port;
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int change, status;
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DPRINTFN(10, ("uhub_explore dev=%p addr=%d\n", dev, dev->address));
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if (!sc->sc_running)
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return (USBD_NOT_STARTED);
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/* Ignore hubs that are too deep. */
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if (dev->depth > USB_HUB_MAX_DEPTH)
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return (USBD_TOO_DEEP);
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for(port = 1; port <= hd->bNbrPorts; port++) {
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up = &dev->hub->ports[port-1];
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r = usbd_get_port_status(dev, port, &up->status);
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if (r != USBD_NORMAL_COMPLETION) {
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DPRINTF(("uhub_explore: get port status failed, "
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"error=%s\n",
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usbd_errstr(r)));
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continue;
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}
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status = UGETW(up->status.wPortStatus);
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change = UGETW(up->status.wPortChange);
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DPRINTFN(5, ("uhub_explore: port %d status 0x%04x 0x%04x\n",
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port, status, change));
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if (change & UPS_C_PORT_ENABLED) {
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usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);
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if (status & UPS_PORT_ENABLED) {
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printf("%s: illegal enable change, port %d\n",
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USBDEVNAME(sc->sc_dev), port);
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} else {
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/* Port error condition. */
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if (up->restartcnt++ < USBD_RESTART_MAX) {
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printf("%s: port error, restarting "
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"port %d\n",
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USBDEVNAME(sc->sc_dev), port);
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goto disco;
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} else {
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printf("%s: port error, giving up "
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"port %d\n",
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USBDEVNAME(sc->sc_dev), port);
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}
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}
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}
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if (!(change & UPS_C_CONNECT_STATUS)) {
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/* No status change, just do recursive explore. */
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if (up->device && up->device->hub)
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up->device->hub->explore(up->device);
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continue;
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}
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DPRINTF(("uhub_explore: status change hub=%d port=%d\n",
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dev->address, port));
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usbd_clear_port_feature(dev, port, UHF_C_PORT_CONNECTION);
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usbd_clear_port_feature(dev, port, UHF_C_PORT_ENABLE);
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/*
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* If there is already a device on the port the change status
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* must mean that is has disconnected. Looking at the
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* current connect status is not enough to figure this out
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* since a new unit may have been connected before we handle
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* the disconnect.
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*/
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disco:
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if (up->device) {
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/* Disconnected */
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DPRINTF(("uhub_explore: device %d disappeared "
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"on port %d\n", up->device->address, port));
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usb_disconnect_port(up, USBDEV(sc->sc_dev));
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usbd_clear_port_feature(dev, port,
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UHF_C_PORT_CONNECTION);
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}
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if (!(status & UPS_CURRENT_CONNECT_STATUS))
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continue;
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/* Connected */
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up->restartcnt = 0;
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/* Wait for maximum device power up time. */
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usbd_delay_ms(dev, USB_PORT_POWERUP_DELAY);
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/* Reset port, which implies enabling it. */
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if (usbd_reset_port(dev, port, &up->status) !=
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USBD_NORMAL_COMPLETION)
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continue;
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/* Get device info and set its address. */
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r = usbd_new_device(USBDEV(sc->sc_dev), dev->bus,
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dev->depth + 1, status & UPS_LOW_SPEED,
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port, up);
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/* XXX retry a few times? */
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if (r != USBD_NORMAL_COMPLETION) {
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DPRINTFN(-1,("uhub_explore: usb_new_device failed, "
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"error=%s\n", usbd_errstr(r)));
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/* Avoid addressing problems by disabling. */
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/* usbd_reset_port(dev, port, &up->status); */
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/*
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* The unit refused to accept a new address, or had
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* some other serious problem. Since we cannot leave
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* at 0 we have to disable the port instead.
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*/
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printf("%s: device problem, disabling port %d\n",
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USBDEVNAME(sc->sc_dev), port);
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usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE);
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/* Make sure we don't try to restart it infinitely. */
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up->restartcnt = USBD_RESTART_MAX;
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} else {
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if (up->device->hub)
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up->device->hub->explore(up->device);
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}
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}
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return (USBD_NORMAL_COMPLETION);
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}
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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int
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uhub_activate(self, act)
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device_ptr_t self;
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enum devact act;
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{
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struct uhub_softc *sc = (struct uhub_softc *)self;
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usbd_device_handle devhub = sc->sc_hub;
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int nports, p, i;
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switch (act) {
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case DVACT_ACTIVATE:
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return (EOPNOTSUPP);
|
|
break;
|
|
|
|
case DVACT_DEACTIVATE:
|
|
nports = devhub->hub->hubdesc.bNbrPorts;
|
|
for(p = 0; p < nports; p++) {
|
|
usbd_device_handle dev = devhub->hub->ports[p].device;
|
|
if (dev) {
|
|
for (i = 0; dev->subdevs[i]; i++)
|
|
config_deactivate(dev->subdevs[i]);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
return (0);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Called from process context when the hub is gone.
|
|
* Detach all devices on active ports.
|
|
*/
|
|
USB_DETACH(uhub)
|
|
{
|
|
USB_DETACH_START(uhub, sc);
|
|
usbd_device_handle dev = sc->sc_hub;
|
|
struct usbd_port *rup;
|
|
int port, nports;
|
|
|
|
#if defined(__NetBSD__) || defined(__OpenBSD__)
|
|
DPRINTF(("uhub_detach: sc=%p flags=%d\n", sc, flags));
|
|
#elif defined(__FreeBSD__)
|
|
DPRINTF(("uhub_detach: sc=%port\n", sc));
|
|
#endif
|
|
|
|
if (!dev->hub) /* Must be partially working */
|
|
return (0);
|
|
|
|
usbd_abort_pipe(sc->sc_ipipe);
|
|
usbd_close_pipe(sc->sc_ipipe);
|
|
|
|
nports = dev->hub->hubdesc.bNbrPorts;
|
|
for(port = 0; port < nports; port++) {
|
|
rup = &dev->hub->ports[port];
|
|
if (rup->device)
|
|
usb_disconnect_port(rup, self);
|
|
}
|
|
|
|
free(dev->hub, M_USBDEV);
|
|
dev->hub = 0;
|
|
|
|
return (0);
|
|
}
|
|
|
|
/*
|
|
* Hub interrupt.
|
|
* This an indication that some port has changed status.
|
|
* Notify the bus event handler thread that we need
|
|
* to be explored again.
|
|
*/
|
|
void
|
|
uhub_intr(reqh, addr, status)
|
|
usbd_request_handle reqh;
|
|
usbd_private_handle addr;
|
|
usbd_status status;
|
|
{
|
|
struct uhub_softc *sc = addr;
|
|
|
|
DPRINTFN(5,("uhub_intr: sc=%p\n", sc));
|
|
if (status != USBD_NORMAL_COMPLETION)
|
|
usbd_clear_endpoint_stall_async(sc->sc_ipipe);
|
|
|
|
usb_needs_explore(sc->sc_hub->bus);
|
|
}
|
|
|
|
#if defined(__FreeBSD__)
|
|
DRIVER_MODULE(uhub, usb, uhubroot_driver, uhubroot_devclass, 0, 0);
|
|
DRIVER_MODULE(uhub, uhub, uhub_driver, uhub_devclass, usbd_driver_load, 0);
|
|
#endif
|