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NetBSD/sys/dev/usb/ums.c
augustss 07e0165b97 Update/add URLs to relevant USB specs.
1999-01-10 11:13:36 +00:00

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/* $NetBSD: ums.c,v 1.20 1999/01/10 11:13:36 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.
*/
/*
* HID spec: http://www.usb.org/developers/data/usbhid10.pdf
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#if defined(__NetBSD__)
#include <sys/device.h>
#include <sys/ioctl.h>
#elif defined(__FreeBSD__)
#include <sys/module.h>
#include <sys/bus.h>
#include <sys/ioccom.h>
#include <sys/conf.h>
#endif
#include <sys/tty.h>
#include <sys/file.h>
#include <sys/select.h>
#include <sys/proc.h>
#include <sys/vnode.h>
#include <sys/poll.h>
#include <dev/usb/usb.h>
#include <dev/usb/usbhid.h>
#include <dev/usb/usbdi.h>
#include <dev/usb/usbdi_util.h>
#include <dev/usb/usbdevs.h>
#include <dev/usb/usb_quirks.h>
#include <dev/usb/hid.h>
#if defined(__NetBSD__)
#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsmousevar.h>
#elif defined(__FreeBSD__)
#include <machine/mouse.h>
#endif
#ifdef USB_DEBUG
#define DPRINTF(x) if (umsdebug) printf x
#define DPRINTFN(n,x) if (umsdebug>(n)) printf x
int umsdebug = 0;
#else
#define DPRINTF(x)
#define DPRINTFN(n,x)
#endif
#define UMSUNIT(s) (minor(s)&0x1f)
#define PS2LBUTMASK x01
#define PS2RBUTMASK x02
#define PS2MBUTMASK x04
#define PS2BUTMASK 0x0f
#define QUEUE_BUFSIZE 240 /* MUST be divisible by 3 _and_ 4 */
struct ums_softc {
bdevice sc_dev; /* base device */
usbd_interface_handle sc_iface; /* interface */
usbd_pipe_handle sc_intrpipe; /* interrupt pipe */
int sc_ep_addr;
u_char *sc_ibuf;
u_int8_t sc_iid;
int sc_isize;
struct hid_location sc_loc_x, sc_loc_y, sc_loc_z;
struct hid_location *sc_loc_btn;
int sc_enabled;
int sc_disconnected; /* device is gone */
int flags; /* device configuration */
#define UMS_Z 0x01 /* z direction available */
int nbuttons;
#if defined(__NetBSD__)
u_char sc_buttons; /* mouse button status */
struct device *sc_wsmousedev;
#elif defined(__FreeBSD__)
u_char qbuf[QUEUE_BUFSIZE];
u_char dummy[100]; /* just for safety and for now */
int qcount, qhead, qtail;
mousehw_t hw;
mousemode_t mode;
mousestatus_t status;
int state;
# define UMS_ASLEEP 0x01 /* readFromDevice is waiting */
# define UMS_SELECT 0x02 /* select is waiting */
struct selinfo rsel; /* process waiting in select */
#endif
};
#define MOUSE_FLAGS_MASK (HIO_CONST|HIO_RELATIVE)
#define MOUSE_FLAGS (HIO_RELATIVE)
void ums_intr __P((usbd_request_handle, usbd_private_handle, usbd_status));
void ums_disco __P((void *));
static int ums_enable __P((void *));
static void ums_disable __P((void *));
#if defined(__NetBSD__)
static int ums_ioctl __P((void *, u_long, caddr_t, int, struct proc *));
const struct wsmouse_accessops ums_accessops = {
ums_enable,
ums_ioctl,
ums_disable,
};
#elif defined(__FreeBSD__)
static d_open_t ums_open;
static d_close_t ums_close;
static d_read_t ums_read;
static d_ioctl_t ums_ioctl;
static d_poll_t ums_poll;
#define UMS_CDEV_MAJOR 111
static struct cdevsw ums_cdevsw = {
ums_open, ums_close, ums_read, nowrite,
ums_ioctl, nostop, nullreset, nodevtotty,
ums_poll, nommap,
NULL, "ums", NULL, -1
};
#endif
USB_DECLARE_DRIVER(ums);
USB_MATCH(ums)
{
USB_MATCH_START(ums, uaa);
usb_interface_descriptor_t *id;
int size, ret;
void *desc;
usbd_status r;
if (!uaa->iface)
return (UMATCH_NONE);
id = usbd_get_interface_descriptor(uaa->iface);
if (!id || id->bInterfaceClass != UCLASS_HID)
return (UMATCH_NONE);
r = usbd_alloc_report_desc(uaa->iface, &desc, &size, M_TEMP);
if (r != USBD_NORMAL_COMPLETION)
return (UMATCH_NONE);
if (hid_is_collection(desc, size,
HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_MOUSE)))
ret = UMATCH_IFACECLASS;
else
ret = UMATCH_NONE;
free(desc, M_TEMP);
return (ret);
}
USB_ATTACH(ums)
{
USB_ATTACH_START(ums, sc, uaa);
usbd_interface_handle iface = uaa->iface;
usb_interface_descriptor_t *id;
usb_endpoint_descriptor_t *ed;
#if defined(__NetBSD__)
struct wsmousedev_attach_args a;
#endif
int size;
void *desc;
usbd_status r;
char devinfo[1024];
u_int32_t flags;
int i;
struct hid_location loc_btn;
sc->sc_disconnected = 1;
sc->sc_iface = iface;
id = usbd_get_interface_descriptor(iface);
usbd_devinfo(uaa->device, 0, devinfo);
USB_ATTACH_SETUP;
printf("%s: %s, iclass %d/%d\n", USBDEVNAME(sc->sc_dev),
devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
ed = usbd_interface2endpoint_descriptor(iface, 0);
if (!ed) {
printf("%s: could not read endpoint descriptor\n",
USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
DPRINTFN(10,("ums_attach: bLength=%d bDescriptorType=%d "
"bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
" bInterval=%d\n",
ed->bLength, ed->bDescriptorType,
ed->bEndpointAddress & UE_ADDR,
ed->bEndpointAddress & UE_IN ? "in" : "out",
ed->bmAttributes & UE_XFERTYPE,
UGETW(ed->wMaxPacketSize), ed->bInterval));
if ((ed->bEndpointAddress & UE_IN) != UE_IN ||
(ed->bmAttributes & UE_XFERTYPE) != UE_INTERRUPT) {
printf("%s: unexpected endpoint\n",
USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
r = usbd_alloc_report_desc(uaa->iface, &desc, &size, M_TEMP);
if (r != USBD_NORMAL_COMPLETION)
USB_ATTACH_ERROR_RETURN;
if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_X),
hid_input, &sc->sc_loc_x, &flags)) {
printf("%s: mouse has no X report\n", USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
printf("%s: X report 0x%04x not supported\n",
USBDEVNAME(sc->sc_dev), flags);
USB_ATTACH_ERROR_RETURN;
}
if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Y),
hid_input, &sc->sc_loc_y, &flags)) {
printf("%s: mouse has no Y report\n", USBDEVNAME(sc->sc_dev));
USB_ATTACH_ERROR_RETURN;
}
if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
printf("%s: Y report 0x%04x not supported\n",
USBDEVNAME(sc->sc_dev), flags);
USB_ATTACH_ERROR_RETURN;
}
/* try to guess the Z activator: first check Z, then WHEEL */
if (hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Z),
hid_input, &sc->sc_loc_z, &flags) ||
hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_WHEEL),
hid_input, &sc->sc_loc_z, &flags)) {
if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
sc->sc_loc_z.size = 0; /* Bad Z coord, ignore it */
} else {
sc->flags |= UMS_Z;
}
}
/* figure out the number of buttons, 7 is an arbitrary limit */
for (i = 1; i <= 7; i++)
if (!hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
hid_input, &loc_btn, 0))
break;
sc->nbuttons = i - 1;
sc->sc_loc_btn = malloc(sizeof(struct hid_location)*sc->nbuttons,
M_USBDEV, M_NOWAIT);
if (!sc->sc_loc_btn)
USB_ATTACH_ERROR_RETURN;
printf("%s: %d buttons%s\n", USBDEVNAME(sc->sc_dev),
sc->nbuttons, (sc->flags & UMS_Z? " and Z dir." : ""));
for (i = 1; i <= sc->nbuttons; i++)
hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
hid_input, &sc->sc_loc_btn[i-1], 0);
sc->sc_isize = hid_report_size(desc, size, hid_input, &sc->sc_iid);
sc->sc_ibuf = malloc(sc->sc_isize, M_USB, M_NOWAIT);
if (!sc->sc_ibuf) {
free(sc->sc_loc_btn, M_USB);
USB_ATTACH_ERROR_RETURN;
}
sc->sc_ep_addr = ed->bEndpointAddress;
sc->sc_disconnected = 0;
free(desc, M_TEMP);
#ifdef USB_DEBUG
DPRINTF(("ums_attach: sc=%p\n", sc));
DPRINTF(("ums_attach: X\t%d/%d\n",
sc->sc_loc_x.pos, sc->sc_loc_x.size));
DPRINTF(("ums_attach: Y\t%d/%d\n",
sc->sc_loc_x.pos, sc->sc_loc_x.size));
if (sc->flags & UMS_Z)
DPRINTF(("ums_attach: Z\t%d/%d\n",
sc->sc_loc_z.pos, sc->sc_loc_z.size));
for (i = 1; i <= sc->nbuttons; i++) {
DPRINTF(("ums_attach: B%d\t%d/%d\n",
i, sc->sc_loc_btn[i-1].pos,sc->sc_loc_btn[i-1].size));
}
DPRINTF(("ums_attach: size=%d, id=%d\n", sc->sc_isize, sc->sc_iid));
#endif
#if defined(__NetBSD__)
a.accessops = &ums_accessops;
a.accesscookie = sc;
sc->sc_wsmousedev = config_found(self, &a, wsmousedevprint);
#elif defined(__FreeBSD__)
sc->hw.buttons = 2; /* XXX hw&mode values are bogus */
sc->hw.iftype = MOUSE_IF_PS2;
sc->hw.type = MOUSE_MOUSE;
if (sc->flags & UMS_Z)
sc->hw.model = MOUSE_MODEL_INTELLI;
else
sc->hw.model = MOUSE_MODEL_GENERIC;
sc->hw.hwid = 0;
sc->mode.protocol = MOUSE_PROTO_PS2;
sc->mode.rate = -1;
sc->mode.resolution = MOUSE_RES_DEFAULT;
sc->mode.accelfactor = 1;
sc->mode.level = 0;
if (sc->flags & UMS_Z) {
sc->mode.packetsize = MOUSE_INTELLI_PACKETSIZE;
sc->mode.syncmask[0] = 0xc8;
} else {
sc->mode.packetsize = MOUSE_PS2_PACKETSIZE;
sc->mode.syncmask[0] = 0xc0;
}
sc->mode.syncmask[1] = 0;
sc->status.flags = 0;
sc->status.button = sc->status.obutton = 0;
sc->status.dx = sc->status.dy = sc->status.dz = 0;
sc->rsel.si_flags = 0;
sc->rsel.si_pid = 0;
#endif
USB_ATTACH_SUCCESS_RETURN;
}
#if defined(__FreeBSD__)
static int
ums_detach(device_t self)
{
struct ums_softc *sc = device_get_softc(self);
char *devinfo = (char *) device_get_desc(self);
if (devinfo) {
device_set_desc(self, NULL);
free(devinfo, M_USB);
}
free(sc->sc_loc_btn, M_USB);
free(sc->sc_ibuf, M_USB);
return 0;
}
#endif
void
ums_disco(p)
void *p;
{
struct ums_softc *sc = p;
DPRINTF(("ums_disco: sc=%p\n", sc));
usbd_abort_pipe(sc->sc_intrpipe);
sc->sc_disconnected = 1;
}
void
ums_intr(reqh, addr, status)
usbd_request_handle reqh;
usbd_private_handle addr;
usbd_status status;
{
struct ums_softc *sc = addr;
u_char *ibuf;
int dx, dy, dz;
u_char buttons = 0;
int i;
#if defined(__NetBSD__)
#define UMS_BUT(i) ((i) == 1 || (i) == 2 ? 3 - (i) : i)
#elif defined(__FreeBSD__)
#define UMS_BUT(i) (i)
#endif
DPRINTFN(5, ("ums_intr: sc=%p status=%d\n", sc, status));
DPRINTFN(5, ("ums_intr: data = %02x %02x %02x\n",
sc->sc_ibuf[0], sc->sc_ibuf[1], sc->sc_ibuf[2]));
if (status == USBD_CANCELLED)
return;
if (status != USBD_NORMAL_COMPLETION) {
DPRINTF(("ums_intr: status=%d\n", status));
usbd_clear_endpoint_stall_async(sc->sc_intrpipe);
return;
}
ibuf = sc->sc_ibuf;
if (sc->sc_iid) {
if (*ibuf++ != sc->sc_iid)
return;
}
dx = hid_get_data(ibuf, &sc->sc_loc_x);
dy = -hid_get_data(ibuf, &sc->sc_loc_y);
dz = hid_get_data(ibuf, &sc->sc_loc_z);
/* NWH Why are you modifying the button assignments here?
* That's the purpose of a high level mouse driver
*/
for (i = 0; i < sc->nbuttons; i++)
if (hid_get_data(ibuf, &sc->sc_loc_btn[i]))
buttons |= (1 << UMS_BUT(i));
#if defined(__NetBSD__)
if (dx || dy || buttons != sc->sc_buttons) {
DPRINTFN(10, ("ums_intr: x:%d y:%d z:%d buttons:0x%x\n",
dx, dy, dz, buttons));
sc->sc_buttons = buttons;
if (sc->sc_wsmousedev)
wsmouse_input(sc->sc_wsmousedev, buttons, dx, dy, dz);
#elif defined(__FreeBSD__)
if (dx || dy || buttons != sc->status.button) {
DPRINTFN(10, ("ums_intr: x:%d y:%d z:%d buttons:0x%x\n",
dx, dy, dz, buttons));
sc->status.button = buttons;
sc->status.dx += dx;
sc->status.dy += dy;
sc->status.dz += dz;
/* Discard data in case of full buffer */
if (sc->qcount == sizeof(sc->qbuf)) {
DPRINTF(("Buffer full, discarded packet"));
return;
}
sc->qbuf[sc->qhead] = MOUSE_PS2_SYNC;
if (dx < 0)
sc->qbuf[sc->qhead] |= MOUSE_PS2_XNEG;
if (dx > 255 || dx < -255)
sc->qbuf[sc->qhead] |= MOUSE_PS2_XOVERFLOW;
if (dy < 0)
sc->qbuf[sc->qhead] |= MOUSE_PS2_YNEG;
if (dy > 255 || dy < -255)
sc->qbuf[sc->qhead] |= MOUSE_PS2_YOVERFLOW;
sc->qbuf[sc->qhead++] |= buttons;
sc->qbuf[sc->qhead++] = dx;
sc->qbuf[sc->qhead++] = dy;
sc->qcount += 3;
if (sc->flags & UMS_Z) {
sc->qbuf[sc->qhead++] = dz;
sc->qcount++;
}
#ifdef USB_DEBUG
if (sc->qhead > sizeof(sc->qbuf))
DPRINTF(("Buffer overrun! %d %d\n",
sc->qhead, sizeof(sc->qbuf)));
#endif
/* wrap round at end of buffer */
if (sc->qhead >= sizeof(sc->qbuf))
sc->qhead = 0;
/* someone waiting for data */
if (sc->state & UMS_ASLEEP)
wakeup(sc);
/* wake up any pending selects */
selwakeup(&sc->rsel);
sc->state &= ~UMS_SELECT;
#endif
}
}
static int
ums_enable(v)
void *v;
{
struct ums_softc *sc = v;
usbd_status r;
if (sc->sc_enabled)
return EBUSY;
sc->sc_enabled = 1;
#if defined(__NetBSD__)
sc->sc_buttons = 0;
#elif defined(__FreeBSD__)
sc->qcount = 0;
sc->qhead = sc->qtail = 0;
#ifdef USB_DEBUG
if (sizeof(sc->qbuf) % 4 || sizeof(sc->qbuf) % 3) {
DPRINTF(("Buffer size not divisible by 3 or 4\n"));
return ENXIO;
}
#endif
sc->status.flags = 0;
sc->status.button = sc->status.obutton = 0;
sc->status.dx = sc->status.dy = sc->status.dz = 0;
#endif
/* Set up interrupt pipe. */
r = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc,
sc->sc_ibuf, sc->sc_isize, ums_intr);
if (r != USBD_NORMAL_COMPLETION) {
DPRINTF(("ums_enable: usbd_open_pipe_intr failed, error=%d\n",
r));
sc->sc_enabled = 0;
return (EIO);
}
usbd_set_disco(sc->sc_intrpipe, ums_disco, sc);
return (0);
}
static void
ums_disable(v)
void *v;
{
struct ums_softc *sc = v;
/* Disable interrupts. */
usbd_abort_pipe(sc->sc_intrpipe);
usbd_close_pipe(sc->sc_intrpipe);
sc->sc_enabled = 0;
#if defined(USBVERBOSE) && defined(__FreeBSD__)
if (sc->qcount != 0)
DPRINTF(("Discarded %d bytes in queue\n", sc->qcount));
#endif
}
#if defined(__NetBSD__)
static int
ums_ioctl(v, cmd, data, flag, p)
void *v;
u_long cmd;
caddr_t data;
int flag;
struct proc *p;
{
switch (cmd) {
case WSMOUSEIO_GTYPE:
*(u_int *)data = WSMOUSE_TYPE_USB;
return (0);
}
return (-1);
}
#elif defined(__FreeBSD__)
static int
ums_open(dev_t dev, int flag, int fmt, struct proc *p)
{
struct ums_softc *sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
if (!sc) {
DPRINTF(("sc not found at open"));
return EINVAL;
}
return ums_enable(sc);
}
static int
ums_close(dev_t dev, int flag, int fmt, struct proc *p)
{
struct ums_softc *sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
if (!sc) {
DPRINTF(("sc not found at close"));
return EINVAL;
}
if (sc->sc_enabled)
ums_disable(sc);
return 0;
}
static int
ums_read(dev_t dev, struct uio *uio, int flag)
{
struct ums_softc *sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
int s;
char buf[sizeof(sc->qbuf)];
int l = 0;
int error;
if (!sc || !sc->sc_enabled) {
DPRINTF(("sc not found at read"));
return EINVAL;
}
s = splusb();
while (sc->qcount == 0 ) {
/* NWH XXX non blocking I/O ??
if (non blocking I/O ) {
splx(s);
return EWOULDBLOCK;
} else {
*/
sc->state |= UMS_ASLEEP;
error = tsleep(sc, PZERO | PCATCH, "umsrea", 0);
sc->state &= ~UMS_ASLEEP;
if (error) {
splx(s);
return error;
}
}
while ((sc->qcount > 0) && (uio->uio_resid > 0)) {
l = (sc->qcount < uio->uio_resid? sc->qcount:uio->uio_resid);
if (l > sizeof(buf))
l = sizeof(buf);
if (l > sizeof(sc->qbuf) - sc->qtail) /* transfer till end of buf */
l = sizeof(sc->qbuf) - sc->qtail;
splx(s);
uiomove(&sc->qbuf[sc->qtail], l, uio);
s = splusb();
if ( sc->qcount - l < 0 ) {
DPRINTF(("qcount below 0, count=%d l=%d\n", sc->qcount, l));
sc->qcount = l;
}
sc->qcount -= l; /* remove the bytes from the buffer */
sc->qtail = (sc->qtail + l) % sizeof(sc->qbuf);
}
splx(s);
return 0;
}
static int
ums_poll(dev_t dev, int events, struct proc *p)
{
struct ums_softc *sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
int revents = 0;
int s;
if (!sc) {
DPRINTF(("sc not found at poll"));
return 0; /* just to make sure */
}
s = splusb();
if (events & (POLLIN | POLLRDNORM))
if (sc->qcount) {
revents = events & (POLLIN | POLLRDNORM);
} else {
sc->state |= UMS_SELECT;
selrecord(p, &sc->rsel);
}
splx(s);
return revents;
}
int
ums_ioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, struct proc *p)
{
struct ums_softc *sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
int error = 0;
int s;
if (!sc) {
DPRINTF(("sc not found at ioctl"));
return ENOENT;
}
switch(cmd) {
case MOUSE_GETHWINFO:
*(mousehw_t *)addr = sc->hw;
break;
case MOUSE_GETMODE:
*(mousemode_t *)addr = sc->mode;
break;
case MOUSE_GETLEVEL:
*(int *)addr = sc->mode.level;
break;
case MOUSE_GETSTATUS: {
mousestatus_t *status = (mousestatus_t *) addr;
s = splusb();
*status = sc->status;
sc->status.obutton = sc->status.button;
sc->status.button = 0;
sc->status.dx = sc->status.dy = sc->status.dz = 0;
splx(s);
if (status->dx || status->dy || status->dz)
status->flags |= MOUSE_POSCHANGED;
if (status->button != status->obutton)
status->flags |= MOUSE_BUTTONSCHANGED;
break;
}
default:
error = ENOTTY;
}
return error;
}
#endif
#if defined(__FreeBSD__)
CDEV_DRIVER_MODULE(ums, usb, ums_driver, ums_devclass,
UMS_CDEV_MAJOR, ums_cdevsw, usbd_driver_load, 0);
#endif
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