/* $NetBSD: usb.c,v 1.11 1999/01/08 11:58:25 augustss Exp $ */
/* $FreeBSD$ */
/*
* Copyright (c) 1998 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Lennart Augustsson (augustss@carlstedt.se) at
* Carlstedt Research & Technology.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
/*
* USB specifications and other documentation can be found at
* http://www.usb.org/developers/data/ and
* http://www.usb.org/developers/index.html .
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#if defined(__NetBSD__)
#include <sys/device.h>
#elif defined(__FreeBSD__)
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/ioccom.h>
#include <sys/uio.h>
#include <sys/conf.h>
#endif
#include <sys/poll.h>
#include <sys/proc.h>
#include <sys/select.h>
#include <dev/usb/usb.h>
#if defined(__FreeBSD__)
MALLOC_DEFINE(M_USB, "USB", "USB");
MALLOC_DEFINE(M_USBDEV, "USBdev", "USB device");
#include "usb_if.h"
#endif /* defined(__FreeBSD__) */
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdivar.h>
#include <dev/usb/usb_quirks.h>
#ifdef USB_DEBUG
#define DPRINTF(x) if (usbdebug) printf x
#define DPRINTFN(n,x) if (usbdebug>(n)) printf x
int usbdebug = 1;
int uhcidebug = 1;
int ohcidebug = 1;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
#define USBUNIT(dev) (minor(dev))
struct usb_softc {
bdevice sc_dev; /* base device */
usbd_bus_handle sc_bus; /* USB controller */
struct usbd_port sc_port; /* dummy port for root hub */
char sc_running;
char sc_exploring;
struct selinfo sc_consel; /* waiting for connect change */
};
#if defined(__NetBSD__)
int usbopen __P((dev_t, int, int, struct proc *));
int usbclose __P((dev_t, int, int, struct proc *));
int usbioctl __P((dev_t, u_long, caddr_t, int, struct proc *));
int usbpoll __P((dev_t, int, struct proc *));
#elif defined(__FreeBSD__)
d_open_t usbopen;
d_close_t usbclose;
d_ioctl_t usbioctl;
int usbpoll __P((dev_t, int, struct proc *));
struct cdevsw usb_cdevsw = {
usbopen, usbclose, noread, nowrite,
usbioctl, nullstop, nullreset, nodevtotty,
usbpoll, nommap, nostrat,
"usb", NULL, -1
};
#endif
usbd_status usb_discover __P((struct usb_softc *));
USB_DECLARE_DRIVER_INIT(usb, DEVMETHOD(bus_print_child, usbd_print_child));
USB_MATCH(usb)
{
DPRINTF(("usbd_match\n"));
return (UMATCH_GENERIC);
}
USB_ATTACH(usb)
{
#if defined(__NetBSD__)
struct usb_softc *sc = (struct usb_softc *)self;
#elif defined(__FreeBSD__)
struct usb_softc *sc = device_get_softc(self);
void *aux = device_get_ivars(self);
#endif
usbd_device_handle dev;
usbd_status r;
#if defined(__NetBSD__)
printf("\n");
#elif defined(__FreeBSD__)
sc->sc_dev = self;
#endif
DPRINTF(("usbd_attach\n"));
usbd_init();
sc->sc_bus = aux;
sc->sc_bus->usbctl = sc;
sc->sc_running = 1;
sc->sc_bus->use_polling = 1;
sc->sc_port.power = USB_MAX_POWER;
r = usbd_new_device(&sc->sc_dev, sc->sc_bus, 0, 0, 0, &sc->sc_port);
if (r == USBD_NORMAL_COMPLETION) {
dev = sc->sc_port.device;
if (!dev->hub) {
sc->sc_running = 0;
printf("%s: root device is not a hub\n",
USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
sc->sc_bus->root_hub = dev;
dev->hub->explore(sc->sc_bus->root_hub);
} else {
printf("%s: root hub problem, error=%d\n",
USBDEVNAME(sc->sc_dev), r);
sc->sc_running = 0;
}
sc->sc_bus->use_polling = 0;
USB_ATTACH_SUCCESS_RETURN;
}
#if defined(__NetBSD__)
int
usbctlprint(aux, pnp)
void *aux;
const char *pnp;
{
/* only "usb"es can attach to host controllers */
if (pnp)
printf("usb at %s", pnp);
return (UNCONF);
}
#endif
int
usbopen(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
USB_GET_SC_OPEN(usb, USBUNIT(dev), sc);
if (sc == 0 || !sc->sc_running)
return (ENXIO);
return (0);
}
int
usbclose(dev, flag, mode, p)
dev_t dev;
int flag, mode;
struct proc *p;
{
return (0);
}
int
usbioctl(dev, cmd, data, flag, p)
dev_t dev;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
USB_GET_SC(usb, USBUNIT(dev), sc);
if (sc == 0 || !sc->sc_running)
return (ENXIO);
switch (cmd) {
#ifdef USB_DEBUG
case USB_SETDEBUG:
usbdebug = uhcidebug = ohcidebug = *(int *)data;
break;
#endif
case USB_DISCOVER:
usb_discover(sc);
break;
case USB_REQUEST:
{
struct usb_ctl_request *ur = (void *)data;
int len = UGETW(ur->request.wLength);
struct iovec iov;
struct uio uio;
void *ptr = 0;
int addr = ur->addr;
usbd_status r;
int error = 0;
DPRINTF(("usbioctl: USB_REQUEST addr=%d len=%d\n", addr, len));
if (len < 0 || len > 32768)
return (EINVAL);
if (addr < 0 || addr >= USB_MAX_DEVICES ||
sc->sc_bus->devices[addr] == 0)
return (EINVAL);
if (len != 0) {
iov.iov_base = (caddr_t)ur->data;
iov.iov_len = len;
uio.uio_iov = &iov;
uio.uio_iovcnt = 1;
uio.uio_resid = len;
uio.uio_offset = 0;
uio.uio_segflg = UIO_USERSPACE;
uio.uio_rw =
ur->request.bmRequestType & UT_READ ?
UIO_READ : UIO_WRITE;
uio.uio_procp = p;
ptr = malloc(len, M_TEMP, M_WAITOK);
if (uio.uio_rw == UIO_WRITE) {
error = uiomove(ptr, len, &uio);
if (error)
goto ret;
}
}
r = usbd_do_request_flags(sc->sc_bus->devices[addr],
&ur->request, ptr,
ur->flags, &ur->actlen);
if (r) {
error = EIO;
goto ret;
}
if (len != 0) {
if (uio.uio_rw == UIO_READ) {
error = uiomove(ptr, len, &uio);
if (error)
goto ret;
}
}
ret:
if (ptr)
free(ptr, M_TEMP);
return (error);
}
case USB_DEVICEINFO:
{
struct usb_device_info *di = (void *)data;
int addr = di->addr;
usbd_device_handle dev;
if (addr < 1 || addr >= USB_MAX_DEVICES)
return (EINVAL);
dev = sc->sc_bus->devices[addr];
if (dev == 0)
return (ENXIO);
usbd_fill_deviceinfo(dev, di);
break;
}
case USB_DEVICESTATS:
*(struct usb_device_stats *)data = sc->sc_bus->stats;
break;
default:
return (ENXIO);
}
return (0);
}
int
usbpoll(dev, events, p)
dev_t dev;
int events;
struct proc *p;
{
int revents, s;
USB_GET_SC(usb, USBUNIT(dev), sc);
DPRINTFN(2, ("usbpoll: sc=%p events=0x%x\n", sc, events));
s = splusb();
revents = 0;
if (events & (POLLOUT | POLLWRNORM))
if (sc->sc_bus->needs_explore)
revents |= events & (POLLOUT | POLLWRNORM);
DPRINTFN(2, ("usbpoll: revents=0x%x\n", revents));
if (revents == 0) {
if (events & (POLLOUT | POLLWRNORM)) {
DPRINTFN(2, ("usbpoll: selrecord\n"));
selrecord(p, &sc->sc_consel);
}
}
splx(s);
return (revents);
}
#if 0
int
usb_bus_count()
{
int i, n;
for (i = n = 0; i < usb_cd.cd_ndevs; i++)
if (usb_cd.cd_devs[i])
n++;
return (n);
}
#endif
#if defined(__NetBSD__)
usbd_status
usb_get_bus_handle(n, h)
int n;
usbd_bus_handle *h;
{
int i;
for (i = 0; i < usb_cd.cd_ndevs; i++)
if (usb_cd.cd_devs[i] && n-- == 0) {
*h = usb_cd.cd_devs[i];
return (USBD_NORMAL_COMPLETION);
}
return (USBD_INVAL);
}
#endif
usbd_status
usb_discover(sc)
struct usb_softc *sc;
{
int s;
/* Explore device tree from the root */
/* We need mutual exclusion while traversing the device tree. */
s = splusb();
while (sc->sc_exploring)
tsleep(&sc->sc_exploring, PRIBIO, "usbdis", 0);
sc->sc_exploring = 1;
sc->sc_bus->needs_explore = 0;
splx(s);
sc->sc_bus->root_hub->hub->explore(sc->sc_bus->root_hub);
s = splusb();
sc->sc_exploring = 0;
wakeup(&sc->sc_exploring);
splx(s);
/* XXX should we start over if sc_needsexplore is set again? */
return (0);
}
void
usb_needs_explore(bus)
usbd_bus_handle bus;
{
bus->needs_explore = 1;
selwakeup(&bus->usbctl->sc_consel);
}
#if defined(__FreeBSD__)
int
usb_detach(device_t self)
{
DPRINTF(("%s: disconnected\n", USBDEVNAME(self)));
return (1);
}
DRIVER_MODULE(usb, root, usb_driver, usb_devclass, 0, 0);
#endif
