373 lines
8.5 KiB
C
373 lines
8.5 KiB
C
/* $NetBSD: usb.c,v 1.6 1998/12/09 00:18:11 augustss Exp $ */
|
|
|
|
/*
|
|
* 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 spec: http://www.teleport.com/cgi-bin/mailmerge.cgi/~usb/cgiform.tpl
|
|
* More USB specs at http://www.usb.org/developers/index.shtml
|
|
*/
|
|
|
|
#include "opt_usbverbose.h"
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/malloc.h>
|
|
#include <sys/device.h>
|
|
#include <sys/poll.h>
|
|
#include <sys/proc.h>
|
|
#include <sys/select.h>
|
|
|
|
#include <dev/usb/usb.h>
|
|
|
|
#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 = 0;
|
|
int uhcidebug;
|
|
int ohcidebug;
|
|
#else
|
|
#define DPRINTF(x)
|
|
#define DPRINTFN(n,x)
|
|
#endif
|
|
|
|
#define USBUNIT(dev) (minor(dev))
|
|
|
|
struct usb_softc {
|
|
struct device 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 */
|
|
};
|
|
|
|
int usb_match __P((struct device *, struct cfdata *, void *));
|
|
void usb_attach __P((struct device *, struct device *, void *));
|
|
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 *));
|
|
|
|
usbd_status usb_discover __P((struct usb_softc *));
|
|
|
|
extern struct cfdriver usb_cd;
|
|
|
|
struct cfattach usb_ca = {
|
|
sizeof(struct usb_softc), usb_match, usb_attach
|
|
};
|
|
|
|
int
|
|
usb_match(parent, match, aux)
|
|
struct device *parent;
|
|
struct cfdata *match;
|
|
void *aux;
|
|
{
|
|
DPRINTF(("usbd_match\n"));
|
|
return (1);
|
|
}
|
|
|
|
void
|
|
usb_attach(parent, self, aux)
|
|
struct device *parent;
|
|
struct device *self;
|
|
void *aux;
|
|
{
|
|
struct usb_softc *sc = (struct usb_softc *)self;
|
|
usbd_device_handle dev;
|
|
usbd_status r;
|
|
|
|
printf("\n");
|
|
|
|
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",
|
|
sc->sc_dev.dv_xname);
|
|
return;
|
|
}
|
|
sc->sc_bus->root_hub = dev;
|
|
dev->hub->explore(&sc->sc_dev, sc->sc_bus->root_hub);
|
|
} else {
|
|
printf("%s: root hub problem, error=%d\n",
|
|
sc->sc_dev.dv_xname, r);
|
|
sc->sc_running = 0;
|
|
}
|
|
sc->sc_bus->use_polling = 0;
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
int
|
|
usbopen(dev, flag, mode, p)
|
|
dev_t dev;
|
|
int flag, mode;
|
|
struct proc *p;
|
|
{
|
|
int unit = USBUNIT(dev);
|
|
struct usb_softc *sc;
|
|
|
|
if (unit >= usb_cd.cd_ndevs)
|
|
return (ENXIO);
|
|
sc = usb_cd.cd_devs[unit];
|
|
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;
|
|
{
|
|
int unit = USBUNIT(dev);
|
|
struct usb_softc *sc = usb_cd.cd_devs[unit];
|
|
|
|
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;
|
|
|
|
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(sc->sc_bus->devices[addr],
|
|
&ur->request, ptr);
|
|
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);
|
|
break;
|
|
}
|
|
|
|
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 unit = USBUNIT(dev);
|
|
struct usb_softc *sc = usb_cd.cd_devs[unit];
|
|
int revents, s;
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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);
|
|
}
|
|
|
|
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_dev, 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);
|
|
}
|