528d1a7fbc
debugging levels to off by default. Now that debug levels can be tweaked by sysctl we don't need to go through hoops to get the different usb parts to produce debug data.
644 lines
19 KiB
C
644 lines
19 KiB
C
/* $NetBSD: uhub.c,v 1.57 2001/11/20 16:08:37 augustss Exp $ */
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/* $FreeBSD$ */
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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 (lennart@augustsson.net) 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/developers/data/usbspec.zip
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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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#include <sys/proc.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/sysctl.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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#define UHUB_INTR_INTERVAL 255 /* ms */
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#ifdef USB_DEBUG
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#define DPRINTF(x) if (uhubdebug) logprintf x
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#define DPRINTFN(n,x) if (uhubdebug>(n)) logprintf x
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int uhubdebug = 0;
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SYSCTL_INT(_debug_usb, OID_AUTO, uhub, CTLFLAG_RW,
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&uhubdebug, 0, "uhub debug level");
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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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Static usbd_status uhub_explore(usbd_device_handle hub);
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Static void uhub_intr(usbd_xfer_handle, usbd_private_handle,usbd_status);
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#if defined(__FreeBSD__)
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Static bus_driver_added_t uhub_driver_added;
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Static bus_child_detached_t uhub_child_detached;
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#endif
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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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USB_DECLARE_DRIVER(uhub);
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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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USB_DECLARE_DRIVER_INIT(uhub,
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DEVMETHOD(bus_driver_added, uhub_driver_added),
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DEVMETHOD(bus_child_detached, uhub_child_detached),
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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown)
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);
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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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DEVMETHOD(device_suspend, bus_generic_suspend),
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DEVMETHOD(device_resume, bus_generic_resume),
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DEVMETHOD(device_shutdown, bus_generic_shutdown),
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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 == NULL && dd->bDeviceClass == UDCLASS_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;
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usbd_status err;
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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, pwrdly;
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usbd_interface_handle iface;
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usb_endpoint_descriptor_t *ed;
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devinfo = malloc(1024, M_TEMP, M_NOWAIT);
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if (devinfo == NULL) {
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USB_ATTACH_ERROR_RETURN;
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}
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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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err = usbd_set_config_index(dev, 0, 1);
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if (err) {
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DPRINTF(("%s: configuration failed, error=%s\n",
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USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
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free(devinfo, M_TEMP);
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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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free(devinfo, M_TEMP);
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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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err = usbd_do_request(dev, &req, &hubdesc);
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nports = hubdesc.bNbrPorts;
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if (!err && nports > 7) {
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USETW(req.wLength, USB_HUB_DESCRIPTOR_SIZE + (nports+1) / 8);
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err = usbd_do_request(dev, &req, &hubdesc);
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}
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if (err) {
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DPRINTF(("%s: getting hub descriptor failed, error=%s\n",
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USBDEVNAME(sc->sc_dev), usbd_errstr(err)));
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free(devinfo, M_TEMP);
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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 == NULL) {
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free(devinfo, M_TEMP);
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USB_ATTACH_ERROR_RETURN;
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}
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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 != NULL &&
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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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err = usbd_device2interface_handle(dev, 0, &iface);
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if (err) {
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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 == NULL) {
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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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err = usbd_open_pipe_intr(iface, ed->bEndpointAddress,
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USBD_SHORT_XFER_OK, &sc->sc_ipipe, sc, sc->sc_status,
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sizeof(sc->sc_status), uhub_intr, UHUB_INTR_INTERVAL);
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if (err) {
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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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usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, dev, USBDEV(sc->sc_dev));
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/*
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* To have the best chance of success we do things in the exact same
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* order as Windoze98. This should not be necessary, but some
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* devices do not follow the USB specs to the letter.
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*
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* These are the events on the bus when a hub is attached:
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* Get device and config descriptors (see attach code)
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* Get hub descriptor (see above)
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* For all ports
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* turn on power
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* wait for power to become stable
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* (all below happens in explore code)
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* For all ports
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* clear C_PORT_CONNECTION
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* For all ports
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* get port status
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* if device connected
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* wait 100 ms
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* turn on reset
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* wait
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* clear C_PORT_RESET
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* get port status
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* proceed with device attachment
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*/
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/* Set up data structures */
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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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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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}
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/* XXX should check for none, individual, or ganged power? */
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pwrdly = dev->hub->hubdesc.bPwrOn2PwrGood * UHD_PWRON_FACTOR
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+ USB_EXTRA_POWER_UP_TIME;
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for (port = 1; port <= nports; port++) {
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/* Turn the power on. */
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err = usbd_set_port_feature(dev, port, UHF_PORT_POWER);
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if (err)
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printf("%s: port %d power on failed, %s\n",
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USBDEVNAME(sc->sc_dev), port,
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usbd_errstr(err));
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DPRINTF(("usb_init_port: turn on port %d power\n", port));
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/* Wait for stable power. */
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usbd_delay_ms(dev, pwrdly);
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}
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/* The usual exploration will finish the setup. */
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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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free(devinfo, M_TEMP);
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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_explore(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 err;
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int speed;
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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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err = usbd_get_port_status(dev, port, &up->status);
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if (err) {
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DPRINTF(("uhub_explore: get port status failed, "
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"error=%s\n", usbd_errstr(err)));
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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(3,("uhub_explore: %s port %d status 0x%04x 0x%04x\n",
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USBDEVNAME(sc->sc_dev), port, status, change));
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if (change & UPS_C_PORT_ENABLED) {
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DPRINTF(("uhub_explore: C_PORT_ENABLED\n"));
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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) /* no message first time */
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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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if (up->restartcnt++ < USBD_RESTART_MAX)
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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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if (!(change & UPS_C_CONNECT_STATUS)) {
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DPRINTFN(3,("uhub_explore: port=%d !C_CONNECT_"
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"STATUS\n", port));
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/* No status change, just do recursive explore. */
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if (up->device != NULL && up->device->hub != NULL)
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up->device->hub->explore(up->device);
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#if 0 && defined(DIAGNOSTIC)
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if (up->device == NULL &&
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(status & UPS_CURRENT_CONNECT_STATUS))
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printf("%s: connected, no device\n",
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USBDEVNAME(sc->sc_dev));
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#endif
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continue;
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}
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/* We have a connect status change, handle it. */
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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 != NULL) {
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/* Disconnected */
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DPRINTF(("uhub_explore: device addr=%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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/* Nothing connected, just ignore it. */
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DPRINTFN(3,("uhub_explore: port=%d !CURRENT_CONNECT"
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"_STATUS\n", port));
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continue;
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}
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/* Connected */
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if (!(status & UPS_PORT_POWER))
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printf("%s: strange, connected port %d has no power\n",
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USBDEVNAME(sc->sc_dev), port);
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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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printf("%s: port %d reset failed\n",
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USBDEVNAME(sc->sc_dev), port);
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continue;
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}
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/* Get port status again, it might have changed during reset */
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err = usbd_get_port_status(dev, port, &up->status);
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if (err) {
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DPRINTF(("uhub_explore: get port status failed, "
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"error=%s\n", usbd_errstr(err)));
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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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if (!(status & UPS_CURRENT_CONNECT_STATUS)) {
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/* Nothing connected, just ignore it. */
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#ifdef DIAGNOSTIC
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printf("%s: port %d, device disappeared after reset\n",
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USBDEVNAME(sc->sc_dev), port);
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#endif
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continue;
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}
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/* Figure out device speed */
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if (status & UPS_HIGH_SPEED)
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speed = USB_SPEED_HIGH;
|
|
else if (status & UPS_LOW_SPEED)
|
|
speed = USB_SPEED_LOW;
|
|
else
|
|
speed = USB_SPEED_FULL;
|
|
/* Get device info and set its address. */
|
|
err = usbd_new_device(USBDEV(sc->sc_dev), dev->bus,
|
|
dev->depth + 1, speed, port, up);
|
|
/* XXX retry a few times? */
|
|
if (err) {
|
|
DPRINTFN(-1,("uhub_explore: usb_new_device failed, "
|
|
"error=%s\n", usbd_errstr(err)));
|
|
/* Avoid addressing problems by disabling. */
|
|
/* usbd_reset_port(dev, port, &up->status); */
|
|
|
|
/*
|
|
* The unit refused to accept a new address, or had
|
|
* some other serious problem. Since we cannot leave
|
|
* at 0 we have to disable the port instead.
|
|
*/
|
|
printf("%s: device problem, disabling port %d\n",
|
|
USBDEVNAME(sc->sc_dev), port);
|
|
usbd_clear_port_feature(dev, port, UHF_PORT_ENABLE);
|
|
} else {
|
|
/* The port set up succeeded, reset error count. */
|
|
up->restartcnt = 0;
|
|
|
|
if (up->device->hub)
|
|
up->device->hub->explore(up->device);
|
|
}
|
|
}
|
|
return (USBD_NORMAL_COMPLETION);
|
|
}
|
|
|
|
#if defined(__NetBSD__) || defined(__OpenBSD__)
|
|
int
|
|
uhub_activate(device_ptr_t self, enum devact act)
|
|
{
|
|
struct uhub_softc *sc = (struct uhub_softc *)self;
|
|
struct usbd_hub *hub = sc->sc_hub->hub;
|
|
usbd_device_handle dev;
|
|
int nports, port, i;
|
|
|
|
switch (act) {
|
|
case DVACT_ACTIVATE:
|
|
return (EOPNOTSUPP);
|
|
break;
|
|
|
|
case DVACT_DEACTIVATE:
|
|
if (hub == NULL) /* malfunctioning hub */
|
|
break;
|
|
nports = hub->hubdesc.bNbrPorts;
|
|
for(port = 0; port < nports; port++) {
|
|
dev = hub->ports[port].device;
|
|
if (dev != NULL && dev->subdevs != NULL) {
|
|
for (i = 0; dev->subdevs[i] != NULL; 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);
|
|
struct usbd_hub *hub = sc->sc_hub->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 (hub == NULL) /* Must be partially working */
|
|
return (0);
|
|
|
|
usbd_abort_pipe(sc->sc_ipipe);
|
|
usbd_close_pipe(sc->sc_ipipe);
|
|
|
|
nports = hub->hubdesc.bNbrPorts;
|
|
for(port = 0; port < nports; port++) {
|
|
rup = &hub->ports[port];
|
|
if (rup->device)
|
|
usb_disconnect_port(rup, self);
|
|
}
|
|
|
|
usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_hub,
|
|
USBDEV(sc->sc_dev));
|
|
|
|
free(hub, M_USBDEV);
|
|
sc->sc_hub->hub = NULL;
|
|
|
|
return (0);
|
|
}
|
|
|
|
#if defined(__FreeBSD__)
|
|
/* Called when a device has been detached from it */
|
|
Static void
|
|
uhub_child_detached(device_t self, device_t child)
|
|
{
|
|
struct uhub_softc *sc = device_get_softc(self);
|
|
usbd_device_handle devhub = sc->sc_hub;
|
|
usbd_device_handle dev;
|
|
int nports;
|
|
int port;
|
|
int i;
|
|
|
|
if (!devhub->hub)
|
|
/* should never happen; children are only created after init */
|
|
panic("hub not fully initialised, but child deleted?");
|
|
|
|
nports = devhub->hub->hubdesc.bNbrPorts;
|
|
for (port = 0; port < nports; port++) {
|
|
dev = devhub->hub->ports[port].device;
|
|
if (dev && dev->subdevs) {
|
|
for (i = 0; dev->subdevs[i]; i++) {
|
|
if (dev->subdevs[i] == child) {
|
|
dev->subdevs[i] = NULL;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
Static void
|
|
uhub_driver_added(device_t _dev, driver_t *_driver)
|
|
{
|
|
/* Don't do anything, as reprobing does not work currently. We should
|
|
* really call through to usbd_new_device or a function along those
|
|
* lines that reinitialises the device if it is not owned by any
|
|
* driver. But this is complicated. Manual replugging by the user is
|
|
* easier.
|
|
*/
|
|
|
|
;
|
|
}
|
|
#endif
|
|
|
|
|
|
/*
|
|
* 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(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
|
|
{
|
|
struct uhub_softc *sc = addr;
|
|
|
|
DPRINTFN(5,("uhub_intr: sc=%p\n", sc));
|
|
if (status == USBD_STALLED)
|
|
usbd_clear_endpoint_stall_async(sc->sc_ipipe);
|
|
else if (status == USBD_NORMAL_COMPLETION)
|
|
usb_needs_explore(sc->sc_hub);
|
|
}
|
|
|
|
#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
|