mirror of
https://git.FreeBSD.org/src.git
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cf4bfc5243
Suggested by: rwatson
759 lines
17 KiB
C
759 lines
17 KiB
C
/* $NetBSD: usb.c,v 1.33 1999/11/22 21:57:09 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 specifications and other documentation can be found at
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* http://www.usb.org/developers/data/ and
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* http://www.usb.org/developers/index.html .
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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/kthread.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 <sys/filio.h>
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#include <sys/uio.h>
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#endif
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#include <sys/conf.h>
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#include <sys/poll.h>
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#if __FreeBSD_version >= 500014
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#include <sys/selinfo.h>
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#else
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#include <sys/select.h>
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#endif
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#include <sys/vnode.h>
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#include <sys/signalvar.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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#define USBUNIT(d) (minor(d)) /* usb_discover device nodes, kthread */
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#define USB_DEV_MINOR 255 /* event queue device */
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#if defined(__FreeBSD__)
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MALLOC_DEFINE(M_USB, "USB", "USB");
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MALLOC_DEFINE(M_USBDEV, "USBdev", "USB device");
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MALLOC_DEFINE(M_USBHC, "USBHC", "USB host controller");
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#include "usb_if.h"
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#endif /* defined(__FreeBSD__) */
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#include <machine/bus.h>
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#include <dev/usb/usbdivar.h>
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#include <dev/usb/usb_quirks.h>
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#ifdef USB_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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int usbdebug = 0;
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#ifdef UHCI_DEBUG
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extern int uhcidebug;
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#endif
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#ifdef OHCI_DEBUG
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extern int ohcidebug;
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#endif
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/*
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* 0 - do usual exploration
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* 1 - do not use timeout exploration
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* >1 - do no exploration
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*/
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int usb_noexplore = 0;
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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 usb_softc {
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USBBASEDEVICE sc_dev; /* base device */
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usbd_bus_handle sc_bus; /* USB controller */
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struct usbd_port sc_port; /* dummy port for root hub */
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#if defined(__FreeBSD__)
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/* This part should be deleted when kthreads is available */
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struct selinfo sc_consel; /* waiting for connect change */
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#else
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struct proc *sc_event_thread;
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#endif
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char sc_dying;
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};
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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cdev_decl(usb);
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#elif defined(__FreeBSD__)
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d_open_t usbopen;
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d_close_t usbclose;
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d_read_t usbread;
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d_ioctl_t usbioctl;
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int usbpoll(dev_t, int, struct proc *);
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struct cdevsw usb_cdevsw = {
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/* open */ usbopen,
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/* close */ usbclose,
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/* read */ usbread,
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/* write */ nowrite,
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/* ioctl */ usbioctl,
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/* poll */ usbpoll,
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/* mmap */ nommap,
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/* strategy */ nostrategy,
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/* name */ "usb",
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/* maj */ USB_CDEV_MAJOR,
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/* dump */ nodump,
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/* psize */ nopsize,
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/* flags */ 0,
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/* bmaj */ -1
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};
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#endif
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Static usbd_status usb_discover(struct usb_softc *);
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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Static void usb_create_event_thread(void *);
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Static void usb_event_thread(void *);
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#endif
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#define USB_MAX_EVENTS 50
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struct usb_event_q {
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struct usb_event ue;
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SIMPLEQ_ENTRY(usb_event_q) next;
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};
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Static SIMPLEQ_HEAD(, usb_event_q) usb_events =
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SIMPLEQ_HEAD_INITIALIZER(usb_events);
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Static int usb_nevents = 0;
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Static struct selinfo usb_selevent;
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Static struct proc *usb_async_proc; /* process who wants USB SIGIO */
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Static int usb_dev_open = 0;
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Static int usb_get_next_event(struct usb_event *);
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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/* Flag to see if we are in the cold boot process. */
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extern int cold;
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#endif
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Static const char *usbrev_str[] = USBREV_STR;
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USB_DECLARE_DRIVER_INIT(usb,
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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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#if defined(__FreeBSD__)
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MODULE_VERSION(usb, 1);
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#endif
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USB_MATCH(usb)
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{
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DPRINTF(("usbd_match\n"));
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return (UMATCH_GENERIC);
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}
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USB_ATTACH(usb)
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{
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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struct usb_softc *sc = (struct usb_softc *)self;
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#elif defined(__FreeBSD__)
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struct usb_softc *sc = device_get_softc(self);
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void *aux = device_get_ivars(self);
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static int global_init_done = 0;
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#endif
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usbd_device_handle dev;
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usbd_status err;
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int usbrev;
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sc->sc_dev = self;
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DPRINTF(("usbd_attach\n"));
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usbd_init();
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sc->sc_bus = aux;
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sc->sc_bus->usbctl = sc;
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sc->sc_port.power = USB_MAX_POWER;
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#if defined(__FreeBSD__)
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printf("%s", USBDEVNAME(sc->sc_dev));
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#endif
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usbrev = sc->sc_bus->usbrev;
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printf(": USB revision %s", usbrev_str[usbrev]);
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if (usbrev != USBREV_1_0 && usbrev != USBREV_1_1) {
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printf(", not supported\n");
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USB_ATTACH_ERROR_RETURN;
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}
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printf("\n");
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err = usbd_new_device(USBDEV(sc->sc_dev), sc->sc_bus, 0, 0, 0,
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&sc->sc_port);
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if (!err) {
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dev = sc->sc_port.device;
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if (dev->hub == NULL) {
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sc->sc_dying = 1;
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printf("%s: root device is not a hub\n",
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USBDEVNAME(sc->sc_dev));
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USB_ATTACH_ERROR_RETURN;
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}
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sc->sc_bus->root_hub = dev;
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#if 1
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/*
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* Turning this code off will delay attachment of USB devices
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* until the USB event thread is running, which means that
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* the keyboard will not work until after cold boot.
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*/
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if (cold) {
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sc->sc_bus->use_polling++;
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dev->hub->explore(sc->sc_bus->root_hub);
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sc->sc_bus->use_polling--;
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}
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#endif
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} else {
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printf("%s: root hub problem, error=%d\n",
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USBDEVNAME(sc->sc_dev), err);
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sc->sc_dying = 1;
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}
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kthread_create(usb_create_event_thread, sc);
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#if defined(__FreeBSD__)
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/* The per controller devices (used for usb_discover) */
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make_dev(&usb_cdevsw, device_get_unit(self), UID_ROOT, GID_OPERATOR,
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0660, "usb%d", device_get_unit(self));
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if (!global_init_done) {
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/* The device spitting out events */
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make_dev(&usb_cdevsw, USB_DEV_MINOR, UID_ROOT, GID_OPERATOR,
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0660, "usb");
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global_init_done = 1;
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}
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#endif
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USB_ATTACH_SUCCESS_RETURN;
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}
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#if defined(__NetBSD__) || defined(__OpenBSD__)
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void
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usb_create_event_thread(arg)
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void *arg;
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{
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struct usb_softc *sc = arg;
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if (kthread_create1(usb_event_thread, sc, &sc->sc_event_thread,
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"%s", sc->sc_dev.dv_xname)) {
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printf("%s: unable to create event thread for\n",
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sc->sc_dev.dv_xname);
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panic("usb_create_event_thread");
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}
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}
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void
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usb_event_thread(arg)
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void *arg;
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{
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struct usb_softc *sc = arg;
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DPRINTF(("usb_event_thread: start\n"));
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while (!sc->sc_dying) {
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#ifdef USB_DEBUG
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if (usb_noexplore < 2)
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#endif
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usb_discover(sc);
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(void)tsleep(&sc->sc_bus->needs_explore, PWAIT, "usbevt",
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#ifdef USB_DEBUG
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usb_noexplore ? 0 :
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#endif
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hz*60
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);
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DPRINTFN(2,("usb_event_thread: woke up\n"));
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}
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sc->sc_event_thread = 0;
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/* In case parent is waiting for us to exit. */
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wakeup(sc);
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DPRINTF(("usb_event_thread: exit\n"));
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kthread_exit(0);
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}
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int
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usbctlprint(aux, pnp)
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void *aux;
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const char *pnp;
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{
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/* only "usb"es can attach to host controllers */
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if (pnp)
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printf("usb at %s", pnp);
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return (UNCONF);
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}
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#endif /* defined(__NetBSD__) || defined(__OpenBSD__) */
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int
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usbopen(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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int unit = USBUNIT(dev);
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struct usb_softc *sc;
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if (unit == USB_DEV_MINOR) {
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if (usb_dev_open)
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return (EBUSY);
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usb_dev_open = 1;
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usb_async_proc = 0;
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return (0);
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} else {
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USB_GET_SC_OPEN(usb, unit, sc);
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if (sc->sc_dying)
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return (EIO);
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return (0);
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}
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}
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int
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usbread(dev, uio, flag)
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dev_t dev;
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struct uio *uio;
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int flag;
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{
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struct usb_event ue;
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int unit = USBUNIT(dev);
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int s, error, n;
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if (unit != USB_DEV_MINOR)
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return (ENODEV);
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if (uio->uio_resid != sizeof(struct usb_event))
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return (EINVAL);
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error = 0;
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s = splusb();
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for (;;) {
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n = usb_get_next_event(&ue);
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if (n != 0)
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break;
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if (flag & IO_NDELAY) {
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error = EWOULDBLOCK;
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break;
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}
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error = tsleep(&usb_events, PZERO | PCATCH, "usbrea", 0);
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if (error)
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break;
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}
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splx(s);
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if (!error)
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error = uiomove((void *)&ue, uio->uio_resid, uio);
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return (error);
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}
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int
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usbclose(dev, flag, mode, p)
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dev_t dev;
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int flag, mode;
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struct proc *p;
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{
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int unit = USBUNIT(dev);
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if (unit == USB_DEV_MINOR) {
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usb_async_proc = 0;
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usb_dev_open = 0;
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}
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return (0);
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}
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int
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usbioctl(devt, cmd, data, flag, p)
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dev_t devt;
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u_long cmd;
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caddr_t data;
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int flag;
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struct proc *p;
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{
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struct usb_softc *sc;
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int unit = USBUNIT(devt);
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if (unit == USB_DEV_MINOR) {
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switch (cmd) {
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case FIONBIO:
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/* All handled in the upper FS layer. */
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return (0);
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case FIOASYNC:
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if (*(int *)data)
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usb_async_proc = p;
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else
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usb_async_proc = 0;
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return (0);
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default:
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return (EINVAL);
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}
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}
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USB_GET_SC(usb, unit, sc);
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if (sc->sc_dying)
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return (EIO);
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switch (cmd) {
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#if defined(__FreeBSD__)
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/* This part should be deleted when kthreads is available */
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case USB_DISCOVER:
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usb_discover(sc);
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break;
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#endif
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#ifdef USB_DEBUG
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case USB_SETDEBUG:
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usbdebug = ((*(int *)data) & 0x000000ff);
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#ifdef UHCI_DEBUG
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uhcidebug = ((*(int *)data) & 0x0000ff00) >> 8;
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#endif
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#ifdef OHCI_DEBUG
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ohcidebug = ((*(int *)data) & 0x00ff0000) >> 16;
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#endif
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break;
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#endif
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case USB_REQUEST:
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{
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struct usb_ctl_request *ur = (void *)data;
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int len = UGETW(ur->request.wLength);
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struct iovec iov;
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struct uio uio;
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void *ptr = 0;
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int addr = ur->addr;
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usbd_status err;
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int error = 0;
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DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len));
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if (len < 0 || len > 32768)
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return (EINVAL);
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if (addr < 0 || addr >= USB_MAX_DEVICES ||
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sc->sc_bus->devices[addr] == 0)
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return (EINVAL);
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if (len != 0) {
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iov.iov_base = (caddr_t)ur->data;
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iov.iov_len = len;
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uio.uio_iov = &iov;
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uio.uio_iovcnt = 1;
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uio.uio_resid = len;
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uio.uio_offset = 0;
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uio.uio_segflg = UIO_USERSPACE;
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uio.uio_rw =
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ur->request.bmRequestType & UT_READ ?
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UIO_READ : UIO_WRITE;
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uio.uio_procp = p;
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ptr = malloc(len, M_TEMP, M_WAITOK);
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if (uio.uio_rw == UIO_WRITE) {
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error = uiomove(ptr, len, &uio);
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if (error)
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goto ret;
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}
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}
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err = usbd_do_request_flags(sc->sc_bus->devices[addr],
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&ur->request, ptr, ur->flags, &ur->actlen);
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if (err) {
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error = EIO;
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goto ret;
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}
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if (len != 0) {
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if (uio.uio_rw == UIO_READ) {
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error = uiomove(ptr, len, &uio);
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if (error)
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goto ret;
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}
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}
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ret:
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if (ptr)
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free(ptr, M_TEMP);
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return (error);
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}
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case USB_DEVICEINFO:
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{
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struct usb_device_info *di = (void *)data;
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int addr = di->addr;
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usbd_device_handle dev;
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if (addr < 1 || addr >= USB_MAX_DEVICES)
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return (EINVAL);
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dev = sc->sc_bus->devices[addr];
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if (dev == 0)
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return (ENXIO);
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usbd_fill_deviceinfo(dev, di);
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break;
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}
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case USB_DEVICESTATS:
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*(struct usb_device_stats *)data = sc->sc_bus->stats;
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break;
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default:
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return (EINVAL);
|
|
}
|
|
return (0);
|
|
}
|
|
|
|
int
|
|
usbpoll(dev, events, p)
|
|
dev_t dev;
|
|
int events;
|
|
struct proc *p;
|
|
{
|
|
int revents, mask, s;
|
|
int unit = USBUNIT(dev);
|
|
|
|
if (unit == USB_DEV_MINOR) {
|
|
revents = 0;
|
|
mask = POLLIN | POLLRDNORM;
|
|
|
|
s = splusb();
|
|
if ((events & mask) && usb_nevents > 0)
|
|
revents |= events & mask;
|
|
if (revents == 0 && (events & mask)) {
|
|
DPRINTFN(2,("usb: sleeping on %p\n", &usb_selevent));
|
|
selrecord(p, &usb_selevent);
|
|
}
|
|
splx(s);
|
|
|
|
return (revents);
|
|
} else {
|
|
#if defined(__FreeBSD__)
|
|
/* This part should be deleted when kthreads is available */
|
|
struct usb_softc *sc;
|
|
|
|
USB_GET_SC(usb, unit, sc);
|
|
|
|
revents = 0;
|
|
mask = POLLOUT | POLLRDNORM;
|
|
|
|
s = splusb();
|
|
if ((events & mask) && sc->sc_bus->needs_explore)
|
|
revents |= events & mask;
|
|
if (revents == 0 && (events & mask))
|
|
selrecord(p, &sc->sc_consel);
|
|
splx(s);
|
|
|
|
return (revents);
|
|
#else
|
|
return (ENXIO);
|
|
#endif
|
|
}
|
|
}
|
|
|
|
/* Explore device tree from the root. */
|
|
usbd_status
|
|
usb_discover(sc)
|
|
struct usb_softc *sc;
|
|
{
|
|
#if defined(__FreeBSD__)
|
|
/* The splxxx parts should be deleted when kthreads is available */
|
|
int s;
|
|
#endif
|
|
|
|
/*
|
|
* We need mutual exclusion while traversing the device tree,
|
|
* but this is guaranteed since this function is only called
|
|
* from the event thread for the controller.
|
|
*/
|
|
#if defined(__FreeBSD__)
|
|
s = splusb();
|
|
#endif
|
|
while (sc->sc_bus->needs_explore && !sc->sc_dying) {
|
|
sc->sc_bus->needs_explore = 0;
|
|
#if defined(__FreeBSD__)
|
|
splx(s);
|
|
#endif
|
|
sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub);
|
|
#if defined(__FreeBSD__)
|
|
s = splusb();
|
|
#endif
|
|
}
|
|
#if defined(__FreeBSD__)
|
|
splx(s);
|
|
#endif
|
|
|
|
return (USBD_NORMAL_COMPLETION);
|
|
}
|
|
|
|
void
|
|
usb_needs_explore(bus)
|
|
usbd_bus_handle bus;
|
|
{
|
|
bus->needs_explore = 1;
|
|
#if defined(__FreeBSD__)
|
|
/* This part should be deleted when kthreads is available */
|
|
selwakeup(&bus->usbctl->sc_consel);
|
|
#endif
|
|
wakeup(&bus->needs_explore);
|
|
}
|
|
|
|
/* Called at splusb() */
|
|
int
|
|
usb_get_next_event(ue)
|
|
struct usb_event *ue;
|
|
{
|
|
struct usb_event_q *ueq;
|
|
|
|
if (usb_nevents <= 0)
|
|
return (0);
|
|
ueq = SIMPLEQ_FIRST(&usb_events);
|
|
*ue = ueq->ue;
|
|
SIMPLEQ_REMOVE_HEAD(&usb_events, ueq, next);
|
|
free(ueq, M_USBDEV);
|
|
usb_nevents--;
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
usbd_add_event(type, dev)
|
|
int type;
|
|
usbd_device_handle dev;
|
|
{
|
|
struct usb_event_q *ueq;
|
|
struct usb_event ue;
|
|
struct timeval thetime;
|
|
int s;
|
|
|
|
s = splusb();
|
|
if (++usb_nevents >= USB_MAX_EVENTS) {
|
|
/* Too many queued events, drop an old one. */
|
|
DPRINTF(("usb: event dropped\n"));
|
|
(void)usb_get_next_event(&ue);
|
|
}
|
|
/* Don't want to wait here inside splusb() */
|
|
ueq = malloc(sizeof *ueq, M_USBDEV, M_NOWAIT);
|
|
if (ueq == NULL) {
|
|
printf("usb: no memory, event dropped\n");
|
|
splx(s);
|
|
return;
|
|
}
|
|
ueq->ue.ue_type = type;
|
|
ueq->ue.ue_cookie = dev->cookie;
|
|
usbd_fill_deviceinfo(dev, &ueq->ue.ue_device);
|
|
microtime(&thetime);
|
|
TIMEVAL_TO_TIMESPEC(&thetime, &ueq->ue.ue_time);
|
|
SIMPLEQ_INSERT_TAIL(&usb_events, ueq, next);
|
|
wakeup(&usb_events);
|
|
selwakeup(&usb_selevent);
|
|
if (usb_async_proc != NULL)
|
|
psignal(usb_async_proc, SIGIO);
|
|
splx(s);
|
|
}
|
|
|
|
#if defined(__NetBSD__) || defined(__OpenBSD__)
|
|
int
|
|
usb_activate(self, act)
|
|
device_ptr_t self;
|
|
enum devact act;
|
|
{
|
|
struct usb_softc *sc = (struct usb_softc *)self;
|
|
usbd_device_handle dev = sc->sc_port.device;
|
|
int i, rv = 0;
|
|
|
|
switch (act) {
|
|
case DVACT_ACTIVATE:
|
|
return (EOPNOTSUPP);
|
|
break;
|
|
|
|
case DVACT_DEACTIVATE:
|
|
sc->sc_dying = 1;
|
|
if (dev && dev->cdesc && dev->subdevs) {
|
|
for (i = 0; dev->subdevs[i]; i++)
|
|
rv |= config_deactivate(dev->subdevs[i]);
|
|
}
|
|
break;
|
|
}
|
|
return (rv);
|
|
}
|
|
|
|
int
|
|
usb_detach(self, flags)
|
|
device_ptr_t self;
|
|
int flags;
|
|
{
|
|
struct usb_softc *sc = (struct usb_softc *)self;
|
|
|
|
DPRINTF(("usb_detach: start\n"));
|
|
|
|
sc->sc_dying = 1;
|
|
|
|
/* Make all devices disconnect. */
|
|
if (sc->sc_port.device)
|
|
usb_disconnect_port(&sc->sc_port, self);
|
|
|
|
/* Kill off event thread. */
|
|
if (sc->sc_event_thread) {
|
|
wakeup(&sc->sc_bus->needs_explore);
|
|
if (tsleep(sc, PWAIT, "usbdet", hz * 60))
|
|
printf("%s: event thread didn't die\n",
|
|
USBDEVNAME(sc->sc_dev));
|
|
DPRINTF(("usb_detach: event thread dead\n"));
|
|
}
|
|
|
|
usbd_finish();
|
|
return (0);
|
|
}
|
|
#elif defined(__FreeBSD__)
|
|
int
|
|
usb_detach(device_t self)
|
|
{
|
|
DPRINTF(("%s: unload, prevented\n", USBDEVNAME(self)));
|
|
|
|
return (EINVAL);
|
|
}
|
|
#endif
|
|
|
|
|
|
#if defined(__FreeBSD__)
|
|
DRIVER_MODULE(usb, ohci, usb_driver, usb_devclass, 0, 0);
|
|
DRIVER_MODULE(usb, uhci, usb_driver, usb_devclass, 0, 0);
|
|
#endif
|