2 * $FreeBSD: src/sys/dev/usb/ums.c,v 1.64 2003/11/09 09:17:22 tanimura Exp $
3 * $DragonFly: src/sys/dev/usbmisc/ums/ums.c,v 1.31 2008/08/14 20:55:54 hasso Exp $
7 * Copyright (c) 1998 The NetBSD Foundation, Inc.
10 * This code is derived from software contributed to The NetBSD Foundation
11 * by Lennart Augustsson (lennart@augustsson.net) at
12 * Carlstedt Research & Technology.
14 * Redistribution and use in source and binary forms, with or without
15 * modification, are permitted provided that the following conditions
17 * 1. Redistributions of source code must retain the above copyright
18 * notice, this list of conditions and the following disclaimer.
19 * 2. Redistributions in binary form must reproduce the above copyright
20 * notice, this list of conditions and the following disclaimer in the
21 * documentation and/or other materials provided with the distribution.
22 * 3. All advertising materials mentioning features or use of this software
23 * must display the following acknowledgement:
24 * This product includes software developed by the NetBSD
25 * Foundation, Inc. and its contributors.
26 * 4. Neither the name of The NetBSD Foundation nor the names of its
27 * contributors may be used to endorse or promote products derived
28 * from this software without specific prior written permission.
30 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
31 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
32 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
33 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
34 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
35 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
36 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
37 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
38 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
39 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
40 * POSSIBILITY OF SUCH DAMAGE.
44 * HID spec: http://www.usb.org/developers/data/devclass/hid1_1.pdf
47 #include <sys/param.h>
48 #include <sys/systm.h>
49 #include <sys/kernel.h>
50 #include <sys/malloc.h>
51 #include <sys/module.h>
53 #include <sys/ioccom.h>
57 #include <sys/select.h>
58 #include <sys/vnode.h>
60 #include <sys/sysctl.h>
61 #include <sys/thread2.h>
63 #include <bus/usb/usb.h>
64 #include <bus/usb/usbhid.h>
66 #include <bus/usb/usbdi.h>
67 #include <bus/usb/usbdi_util.h>
68 #include <bus/usb/usb_quirks.h>
69 #include <bus/usb/hid.h>
71 #include <machine/mouse.h>
74 #define DPRINTF(x) if (umsdebug) kprintf x
75 #define DPRINTFN(n,x) if (umsdebug>(n)) kprintf x
77 SYSCTL_NODE(_hw_usb, OID_AUTO, ums, CTLFLAG_RW, 0, "USB ums");
78 SYSCTL_INT(_hw_usb_ums, OID_AUTO, debug, CTLFLAG_RW,
79 &umsdebug, 0, "ums debug level");
85 #define UMSUNIT(s) (minor(s)&0x1f)
87 #define MS_TO_TICKS(ms) ((ms) * hz / 1000)
89 #define QUEUE_BUFSIZE 400 /* MUST be divisible by 5 _and_ 8 */
92 device_t sc_dev; /* base device */
93 usbd_interface_handle sc_iface; /* interface */
94 usbd_pipe_handle sc_intrpipe; /* interrupt pipe */
100 struct hid_location sc_loc_x, sc_loc_y, sc_loc_z;
101 struct hid_location *sc_loc_btn;
103 struct callout sc_timeout; /* for spurious button ups */
106 int sc_disconnected; /* device is gone */
108 int flags; /* device configuration */
109 #define UMS_Z 0x01 /* z direction available */
110 #define UMS_SPUR_BUT_UP 0x02 /* spurious button up events */
112 #define MAX_BUTTONS 31 /* must not exceed size of sc_buttons */
114 u_char qbuf[QUEUE_BUFSIZE]; /* must be divisable by 3&4 */
115 u_char dummy[100]; /* XXX just for safety and for now */
116 int qcount, qhead, qtail;
119 mousestatus_t status;
122 # define UMS_ASLEEP 0x01 /* readFromDevice is waiting */
123 # define UMS_SELECT 0x02 /* select is waiting */
124 struct selinfo rsel; /* process waiting in select */
127 #define MOUSE_FLAGS_MASK (HIO_CONST|HIO_RELATIVE)
128 #define MOUSE_FLAGS (HIO_RELATIVE)
130 static void ums_intr(usbd_xfer_handle xfer,
131 usbd_private_handle priv, usbd_status status);
133 static void ums_add_to_queue(struct ums_softc *sc,
134 int dx, int dy, int dz, int buttons);
135 static void ums_add_to_queue_timeout(void *priv);
137 static int ums_enable(void *);
138 static void ums_disable(void *);
140 static d_open_t ums_open;
141 static d_close_t ums_close;
142 static d_read_t ums_read;
143 static d_ioctl_t ums_ioctl;
144 static d_poll_t ums_poll;
146 #define UMS_CDEV_MAJOR 111
148 static struct dev_ops ums_ops = {
149 { "ums", UMS_CDEV_MAJOR, 0 },
151 .d_close = ums_close,
153 .d_ioctl = ums_ioctl,
157 static device_probe_t ums_match;
158 static device_attach_t ums_attach;
159 static device_detach_t ums_detach;
161 static devclass_t ums_devclass;
163 static kobj_method_t ums_methods[] = {
164 DEVMETHOD(device_probe, ums_match),
165 DEVMETHOD(device_attach, ums_attach),
166 DEVMETHOD(device_detach, ums_detach),
170 static driver_t ums_driver = {
173 sizeof(struct ums_softc)
176 MODULE_DEPEND(ums, usb, 1, 1, 1);
179 ums_match(device_t self)
181 struct usb_attach_arg *uaa = device_get_ivars(self);
182 usb_interface_descriptor_t *id;
188 return (UMATCH_NONE);
189 id = usbd_get_interface_descriptor(uaa->iface);
190 if (!id || id->bInterfaceClass != UICLASS_HID)
191 return (UMATCH_NONE);
193 err = usbd_read_report_desc(uaa->iface, &desc, &size, M_TEMP);
195 return (UMATCH_NONE);
197 if (hid_is_collection(desc, size,
198 HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_MOUSE)))
199 ret = UMATCH_IFACECLASS;
208 ums_attach(device_t self)
210 struct ums_softc *sc = device_get_softc(self);
211 struct usb_attach_arg *uaa = device_get_ivars(self);
212 usbd_interface_handle iface = uaa->iface;
213 usb_endpoint_descriptor_t *ed;
219 struct hid_location loc_btn;
221 sc->sc_disconnected = 1;
222 sc->sc_iface = iface;
224 ed = usbd_interface2endpoint_descriptor(iface, 0);
226 kprintf("%s: could not read endpoint descriptor\n",
227 device_get_nameunit(sc->sc_dev));
231 DPRINTFN(10,("ums_attach: bLength=%d bDescriptorType=%d "
232 "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
234 ed->bLength, ed->bDescriptorType,
235 UE_GET_ADDR(ed->bEndpointAddress),
236 UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN ? "in":"out",
237 UE_GET_XFERTYPE(ed->bmAttributes),
238 UGETW(ed->wMaxPacketSize), ed->bInterval));
240 if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
241 UE_GET_XFERTYPE(ed->bmAttributes) != UE_INTERRUPT) {
242 kprintf("%s: unexpected endpoint\n",
243 device_get_nameunit(sc->sc_dev));
247 err = usbd_read_report_desc(uaa->iface, &desc, &size, M_TEMP);
251 if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_X),
252 hid_input, &sc->sc_loc_x, &flags)) {
253 kprintf("%s: mouse has no X report\n", device_get_nameunit(sc->sc_dev));
256 if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
257 kprintf("%s: X report 0x%04x not supported\n",
258 device_get_nameunit(sc->sc_dev), flags);
262 if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Y),
263 hid_input, &sc->sc_loc_y, &flags)) {
264 kprintf("%s: mouse has no Y report\n", device_get_nameunit(sc->sc_dev));
267 if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
268 kprintf("%s: Y report 0x%04x not supported\n",
269 device_get_nameunit(sc->sc_dev), flags);
273 /* try to guess the Z activator: first check Z, then WHEEL */
274 if (hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Z),
275 hid_input, &sc->sc_loc_z, &flags) ||
276 hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_WHEEL),
277 hid_input, &sc->sc_loc_z, &flags)) {
278 if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
279 sc->sc_loc_z.size = 0; /* Bad Z coord, ignore it */
285 /* figure out the number of buttons */
286 for (i = 1; i <= MAX_BUTTONS; i++)
287 if (!hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
288 hid_input, &loc_btn, 0))
290 sc->nbuttons = i - 1;
291 sc->sc_loc_btn = kmalloc(sizeof(struct hid_location)*sc->nbuttons,
292 M_USBDEV, M_INTWAIT);
294 kprintf("%s: %d buttons%s\n", device_get_nameunit(sc->sc_dev),
295 sc->nbuttons, sc->flags & UMS_Z? " and Z dir." : "");
297 for (i = 1; i <= sc->nbuttons; i++)
298 hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
299 hid_input, &sc->sc_loc_btn[i-1], 0);
301 sc->sc_isize = hid_report_size(desc, size, hid_input, &sc->sc_iid);
302 sc->sc_ibuf = kmalloc(sc->sc_isize, M_USB, M_INTWAIT);
303 sc->sc_ep_addr = ed->bEndpointAddress;
304 sc->sc_disconnected = 0;
308 DPRINTF(("ums_attach: sc=%p\n", sc));
309 DPRINTF(("ums_attach: X\t%d/%d\n",
310 sc->sc_loc_x.pos, sc->sc_loc_x.size));
311 DPRINTF(("ums_attach: Y\t%d/%d\n",
312 sc->sc_loc_y.pos, sc->sc_loc_y.size));
313 if (sc->flags & UMS_Z)
314 DPRINTF(("ums_attach: Z\t%d/%d\n",
315 sc->sc_loc_z.pos, sc->sc_loc_z.size));
316 for (i = 1; i <= sc->nbuttons; i++) {
317 DPRINTF(("ums_attach: B%d\t%d/%d\n",
318 i, sc->sc_loc_btn[i-1].pos,sc->sc_loc_btn[i-1].size));
320 DPRINTF(("ums_attach: size=%d, id=%d\n", sc->sc_isize, sc->sc_iid));
323 if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
324 sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
326 sc->hw.buttons = sc->nbuttons;
327 sc->hw.iftype = MOUSE_IF_USB;
328 sc->hw.type = MOUSE_MOUSE;
329 sc->hw.model = MOUSE_MODEL_GENERIC;
331 sc->mode.protocol = MOUSE_PROTO_MSC;
333 sc->mode.resolution = MOUSE_RES_UNKNOWN;
334 sc->mode.accelfactor = 0;
336 sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
337 sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
338 sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
340 sc->status.flags = 0;
341 sc->status.button = sc->status.obutton = 0;
342 sc->status.dx = sc->status.dy = sc->status.dz = 0;
344 dev_ops_add(&ums_ops, -1, device_get_unit(self));
345 make_dev(&ums_ops, device_get_unit(self),
346 UID_ROOT, GID_OPERATOR,
347 0644, "ums%d", device_get_unit(self));
349 if (usbd_get_quirks(uaa->device)->uq_flags & UQ_SPUR_BUT_UP) {
350 DPRINTF(("%s: Spurious button up events\n",
351 device_get_nameunit(sc->sc_dev)));
352 sc->flags |= UMS_SPUR_BUT_UP;
360 ums_detach(device_t self)
362 struct ums_softc *sc = device_get_softc(self);
367 DPRINTF(("%s: disconnected\n", device_get_nameunit(self)));
369 kfree(sc->sc_loc_btn, M_USB);
370 kfree(sc->sc_ibuf, M_USB);
372 /* someone waiting for data */
374 * XXX If we wakeup the process here, the device will be gone by
375 * the time the process gets a chance to notice. *_close and friends
376 * should be fixed to handle this case.
377 * Or we should do a delayed detach for this.
378 * Does this delay now force tsleep to exit with an error?
380 if (sc->state & UMS_ASLEEP) {
381 sc->state &= ~UMS_ASLEEP;
384 if (sc->state & UMS_SELECT) {
385 sc->state &= ~UMS_SELECT;
386 selwakeup(&sc->rsel);
388 dev_ops_remove(&ums_ops, -1, device_get_unit(self));
394 ums_intr(usbd_xfer_handle xfer, usbd_private_handle addr,
397 struct ums_softc *sc = addr;
403 #define UMS_BUT(i) ((i) < 3 ? (((i) + 2) % 3) : (i))
405 DPRINTFN(5, ("ums_intr: sc=%p status=%d\n", sc, status));
406 DPRINTFN(5, ("ums_intr: data = %02x %02x %02x\n",
407 sc->sc_ibuf[0], sc->sc_ibuf[1], sc->sc_ibuf[2]));
409 if (status == USBD_CANCELLED)
412 if (status != USBD_NORMAL_COMPLETION) {
413 DPRINTF(("ums_intr: status=%d\n", status));
414 if (status == USBD_STALLED)
415 usbd_clear_endpoint_stall_async(sc->sc_intrpipe);
421 if (*ibuf++ != sc->sc_iid)
425 dx = hid_get_data(ibuf, &sc->sc_loc_x);
426 dy = -hid_get_data(ibuf, &sc->sc_loc_y);
427 dz = -hid_get_data(ibuf, &sc->sc_loc_z);
428 for (i = 0; i < sc->nbuttons; i++)
429 if (hid_get_data(ibuf, &sc->sc_loc_btn[i]))
430 buttons |= (1 << UMS_BUT(i));
432 if (dx || dy || dz || (sc->flags & UMS_Z)
433 || buttons != sc->status.button) {
434 DPRINTFN(5, ("ums_intr: x:%d y:%d z:%d buttons:0x%x\n",
435 dx, dy, dz, buttons));
437 sc->status.button = buttons;
442 /* Discard data in case of full buffer */
443 if (sc->qcount == sizeof(sc->qbuf)) {
444 DPRINTF(("Buffer full, discarded packet"));
449 * The Qtronix keyboard has a built in PS/2 port for a mouse.
450 * The firmware once in a while posts a spurious button up
451 * event. This event we ignore by doing a timeout for 50 msecs.
452 * If we receive dx=dy=dz=buttons=0 before we add the event to
454 * In any other case we delete the timeout event.
456 if (sc->flags & UMS_SPUR_BUT_UP &&
457 dx == 0 && dy == 0 && dz == 0 && buttons == 0) {
458 callout_reset(&sc->sc_timeout, MS_TO_TICKS(50),
459 ums_add_to_queue_timeout, (void *) sc);
461 callout_stop(&sc->sc_timeout);
462 ums_add_to_queue(sc, dx, dy, dz, buttons);
468 ums_add_to_queue_timeout(void *priv)
470 struct ums_softc *sc = priv;
473 ums_add_to_queue(sc, 0, 0, 0, 0);
478 ums_add_to_queue(struct ums_softc *sc, int dx, int dy, int dz, int buttons)
480 /* Discard data in case of full buffer */
481 if (sc->qhead+sc->mode.packetsize > sizeof(sc->qbuf)) {
482 DPRINTF(("Buffer full, discarded packet"));
486 if (dx > 254) dx = 254;
487 if (dx < -256) dx = -256;
488 if (dy > 254) dy = 254;
489 if (dy < -256) dy = -256;
490 if (dz > 126) dz = 126;
491 if (dz < -128) dz = -128;
493 sc->qbuf[sc->qhead] = sc->mode.syncmask[1];
494 sc->qbuf[sc->qhead] |= ~buttons & MOUSE_MSC_BUTTONS;
495 sc->qbuf[sc->qhead+1] = dx >> 1;
496 sc->qbuf[sc->qhead+2] = dy >> 1;
497 sc->qbuf[sc->qhead+3] = dx - (dx >> 1);
498 sc->qbuf[sc->qhead+4] = dy - (dy >> 1);
500 if (sc->mode.level == 1) {
501 sc->qbuf[sc->qhead+5] = dz >> 1;
502 sc->qbuf[sc->qhead+6] = dz - (dz >> 1);
503 sc->qbuf[sc->qhead+7] = ((~buttons >> 3)
504 & MOUSE_SYS_EXTBUTTONS);
507 sc->qhead += sc->mode.packetsize;
508 sc->qcount += sc->mode.packetsize;
509 /* wrap round at end of buffer */
510 if (sc->qhead >= sizeof(sc->qbuf))
513 /* someone waiting for data */
514 if (sc->state & UMS_ASLEEP) {
515 sc->state &= ~UMS_ASLEEP;
518 if (sc->state & UMS_SELECT) {
519 sc->state &= ~UMS_SELECT;
520 selwakeup(&sc->rsel);
527 struct ums_softc *sc = v;
536 sc->qhead = sc->qtail = 0;
537 sc->status.flags = 0;
538 sc->status.button = sc->status.obutton = 0;
539 sc->status.dx = sc->status.dy = sc->status.dz = 0;
541 callout_init(&sc->sc_timeout);
543 /* Set up interrupt pipe. */
544 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
545 USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc,
546 sc->sc_ibuf, sc->sc_isize, ums_intr,
547 USBD_DEFAULT_INTERVAL);
549 DPRINTF(("ums_enable: usbd_open_pipe_intr failed, error=%d\n",
558 ums_disable(void *priv)
560 struct ums_softc *sc = priv;
562 callout_stop(&sc->sc_timeout);
564 /* Disable interrupts. */
565 usbd_abort_pipe(sc->sc_intrpipe);
566 usbd_close_pipe(sc->sc_intrpipe);
571 DPRINTF(("Discarded %d bytes in queue\n", sc->qcount));
575 ums_open(struct dev_open_args *ap)
577 cdev_t dev = ap->a_head.a_dev;
578 struct ums_softc *sc;
580 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
584 return ums_enable(sc);
588 ums_close(struct dev_close_args *ap)
590 cdev_t dev = ap->a_head.a_dev;
591 struct ums_softc *sc;
593 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
605 ums_read(struct dev_read_args *ap)
607 cdev_t dev = ap->a_head.a_dev;
608 struct uio *uio = ap->a_uio;
609 struct ums_softc *sc;
610 char buf[sizeof(sc->qbuf)];
614 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
622 while (sc->qcount == 0 ) {
623 if (ap->a_ioflag & IO_NDELAY) { /* non-blocking I/O */
628 sc->state |= UMS_ASLEEP; /* blocking I/O */
629 error = tsleep(sc, PCATCH, "umsrea", 0);
633 } else if (!sc->sc_enabled) {
637 /* check whether the device is still there */
639 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
647 * The writer process only extends qcount and qtail. We could copy
648 * them and use the copies to do the copying out of the queue.
651 while ((sc->qcount > 0) && (uio->uio_resid > 0)) {
652 l = (sc->qcount < uio->uio_resid? sc->qcount:uio->uio_resid);
655 if (l > sizeof(sc->qbuf) - sc->qtail) /* transfer till end of buf */
656 l = sizeof(sc->qbuf) - sc->qtail;
659 uiomove(&sc->qbuf[sc->qtail], l, uio);
662 if ( sc->qcount - l < 0 ) {
663 DPRINTF(("qcount below 0, count=%d l=%d\n", sc->qcount, l));
666 sc->qcount -= l; /* remove the bytes from the buffer */
667 sc->qtail = (sc->qtail + l) % sizeof(sc->qbuf);
675 ums_poll(struct dev_poll_args *ap)
677 cdev_t dev = ap->a_head.a_dev;
678 struct ums_softc *sc;
681 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
689 if (ap->a_events & (POLLIN | POLLRDNORM)) {
691 revents = ap->a_events & (POLLIN | POLLRDNORM);
693 sc->state |= UMS_SELECT;
694 selrecord(curthread, &sc->rsel);
698 ap->a_events = revents;
703 ums_ioctl(struct dev_ioctl_args *ap)
705 cdev_t dev = ap->a_head.a_dev;
706 struct ums_softc *sc;
710 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
716 case MOUSE_GETHWINFO:
717 *(mousehw_t *)ap->a_data = sc->hw;
720 *(mousemode_t *)ap->a_data = sc->mode;
723 mode = *(mousemode_t *)ap->a_data;
725 if (mode.level == -1)
726 /* don't change the current setting */
728 else if ((mode.level < 0) || (mode.level > 1))
732 sc->mode.level = mode.level;
734 if (sc->mode.level == 0) {
735 if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
736 sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
738 sc->hw.buttons = sc->nbuttons;
739 sc->mode.protocol = MOUSE_PROTO_MSC;
740 sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
741 sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
742 sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
743 } else if (sc->mode.level == 1) {
744 if (sc->nbuttons > MOUSE_SYS_MAXBUTTON)
745 sc->hw.buttons = MOUSE_SYS_MAXBUTTON;
747 sc->hw.buttons = sc->nbuttons;
748 sc->mode.protocol = MOUSE_PROTO_SYSMOUSE;
749 sc->mode.packetsize = MOUSE_SYS_PACKETSIZE;
750 sc->mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
751 sc->mode.syncmask[1] = MOUSE_SYS_SYNC;
754 bzero(sc->qbuf, sizeof(sc->qbuf));
755 sc->qhead = sc->qtail = sc->qcount = 0;
760 *(int *)ap->a_data = sc->mode.level;
763 if (*(int *)ap->a_data < 0 || *(int *)ap->a_data > 1)
767 sc->mode.level = *(int *)ap->a_data;
769 if (sc->mode.level == 0) {
770 if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
771 sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
773 sc->hw.buttons = sc->nbuttons;
774 sc->mode.protocol = MOUSE_PROTO_MSC;
775 sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
776 sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
777 sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
778 } else if (sc->mode.level == 1) {
779 if (sc->nbuttons > MOUSE_SYS_MAXBUTTON)
780 sc->hw.buttons = MOUSE_SYS_MAXBUTTON;
782 sc->hw.buttons = sc->nbuttons;
783 sc->mode.protocol = MOUSE_PROTO_SYSMOUSE;
784 sc->mode.packetsize = MOUSE_SYS_PACKETSIZE;
785 sc->mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
786 sc->mode.syncmask[1] = MOUSE_SYS_SYNC;
789 bzero(sc->qbuf, sizeof(sc->qbuf));
790 sc->qhead = sc->qtail = sc->qcount = 0;
794 case MOUSE_GETSTATUS: {
795 mousestatus_t *status = (mousestatus_t *) ap->a_data;
798 *status = sc->status;
799 sc->status.obutton = sc->status.button;
800 sc->status.button = 0;
801 sc->status.dx = sc->status.dy = sc->status.dz = 0;
804 if (status->dx || status->dy || status->dz)
805 status->flags |= MOUSE_POSCHANGED;
806 if (status->button != status->obutton)
807 status->flags |= MOUSE_BUTTONSCHANGED;
817 DRIVER_MODULE(ums, uhub, ums_driver, ums_devclass, usbd_driver_load, 0);