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 1.26 2007/07/02 06:43:31 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/usbdevs.h>
69 #include <bus/usb/usb_quirks.h>
70 #include <bus/usb/hid.h>
72 #include <machine/mouse.h>
75 #define DPRINTF(x) if (umsdebug) kprintf x
76 #define DPRINTFN(n,x) if (umsdebug>(n)) kprintf x
78 SYSCTL_NODE(_hw_usb, OID_AUTO, ums, CTLFLAG_RW, 0, "USB ums");
79 SYSCTL_INT(_hw_usb_ums, OID_AUTO, debug, CTLFLAG_RW,
80 &umsdebug, 0, "ums debug level");
86 #define UMSUNIT(s) (minor(s)&0x1f)
88 #define MS_TO_TICKS(ms) ((ms) * hz / 1000)
90 #define QUEUE_BUFSIZE 400 /* MUST be divisible by 5 _and_ 8 */
93 device_t sc_dev; /* base device */
94 usbd_interface_handle sc_iface; /* interface */
95 usbd_pipe_handle sc_intrpipe; /* interrupt pipe */
101 struct hid_location sc_loc_x, sc_loc_y, sc_loc_z;
102 struct hid_location *sc_loc_btn;
104 struct callout sc_timeout; /* for spurious button ups */
107 int sc_disconnected; /* device is gone */
109 int flags; /* device configuration */
110 #define UMS_Z 0x01 /* z direction available */
111 #define UMS_SPUR_BUT_UP 0x02 /* spurious button up events */
113 #define MAX_BUTTONS 31 /* must not exceed size of sc_buttons */
115 u_char qbuf[QUEUE_BUFSIZE]; /* must be divisable by 3&4 */
116 u_char dummy[100]; /* XXX just for safety and for now */
117 int qcount, qhead, qtail;
120 mousestatus_t status;
123 # define UMS_ASLEEP 0x01 /* readFromDevice is waiting */
124 # define UMS_SELECT 0x02 /* select is waiting */
125 struct selinfo rsel; /* process waiting in select */
128 #define MOUSE_FLAGS_MASK (HIO_CONST|HIO_RELATIVE)
129 #define MOUSE_FLAGS (HIO_RELATIVE)
131 static void ums_intr(usbd_xfer_handle xfer,
132 usbd_private_handle priv, usbd_status status);
134 static void ums_add_to_queue(struct ums_softc *sc,
135 int dx, int dy, int dz, int buttons);
136 static void ums_add_to_queue_timeout(void *priv);
138 static int ums_enable(void *);
139 static void ums_disable(void *);
141 static d_open_t ums_open;
142 static d_close_t ums_close;
143 static d_read_t ums_read;
144 static d_ioctl_t ums_ioctl;
145 static d_poll_t ums_poll;
147 #define UMS_CDEV_MAJOR 111
149 static struct dev_ops ums_ops = {
150 { "ums", UMS_CDEV_MAJOR, 0 },
152 .d_close = ums_close,
154 .d_ioctl = ums_ioctl,
158 USB_DECLARE_DRIVER(ums);
161 ums_match(device_t self)
163 struct usb_attach_arg *uaa = device_get_ivars(self);
164 usb_interface_descriptor_t *id;
170 return (UMATCH_NONE);
171 id = usbd_get_interface_descriptor(uaa->iface);
172 if (!id || id->bInterfaceClass != UICLASS_HID)
173 return (UMATCH_NONE);
175 err = usbd_read_report_desc(uaa->iface, &desc, &size, M_TEMP);
177 return (UMATCH_NONE);
179 if (hid_is_collection(desc, size,
180 HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_MOUSE)))
181 ret = UMATCH_IFACECLASS;
190 ums_attach(device_t self)
192 struct ums_softc *sc = device_get_softc(self);
193 struct usb_attach_arg *uaa = device_get_ivars(self);
194 usbd_interface_handle iface = uaa->iface;
195 usb_interface_descriptor_t *id;
196 usb_endpoint_descriptor_t *ed;
203 struct hid_location loc_btn;
205 sc->sc_disconnected = 1;
206 sc->sc_iface = iface;
207 id = usbd_get_interface_descriptor(iface);
208 usbd_devinfo(uaa->device, 0, devinfo);
210 device_set_desc_copy(self, devinfo);
211 kprintf("%s: %s, iclass %d/%d\n", device_get_nameunit(sc->sc_dev),
212 devinfo, id->bInterfaceClass, id->bInterfaceSubClass);
213 ed = usbd_interface2endpoint_descriptor(iface, 0);
215 kprintf("%s: could not read endpoint descriptor\n",
216 device_get_nameunit(sc->sc_dev));
220 DPRINTFN(10,("ums_attach: bLength=%d bDescriptorType=%d "
221 "bEndpointAddress=%d-%s bmAttributes=%d wMaxPacketSize=%d"
223 ed->bLength, ed->bDescriptorType,
224 UE_GET_ADDR(ed->bEndpointAddress),
225 UE_GET_DIR(ed->bEndpointAddress) == UE_DIR_IN ? "in":"out",
226 UE_GET_XFERTYPE(ed->bmAttributes),
227 UGETW(ed->wMaxPacketSize), ed->bInterval));
229 if (UE_GET_DIR(ed->bEndpointAddress) != UE_DIR_IN ||
230 UE_GET_XFERTYPE(ed->bmAttributes) != UE_INTERRUPT) {
231 kprintf("%s: unexpected endpoint\n",
232 device_get_nameunit(sc->sc_dev));
236 err = usbd_read_report_desc(uaa->iface, &desc, &size, M_TEMP);
240 if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_X),
241 hid_input, &sc->sc_loc_x, &flags)) {
242 kprintf("%s: mouse has no X report\n", device_get_nameunit(sc->sc_dev));
245 if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
246 kprintf("%s: X report 0x%04x not supported\n",
247 device_get_nameunit(sc->sc_dev), flags);
251 if (!hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Y),
252 hid_input, &sc->sc_loc_y, &flags)) {
253 kprintf("%s: mouse has no Y report\n", device_get_nameunit(sc->sc_dev));
256 if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
257 kprintf("%s: Y report 0x%04x not supported\n",
258 device_get_nameunit(sc->sc_dev), flags);
262 /* try to guess the Z activator: first check Z, then WHEEL */
263 if (hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_Z),
264 hid_input, &sc->sc_loc_z, &flags) ||
265 hid_locate(desc, size, HID_USAGE2(HUP_GENERIC_DESKTOP, HUG_WHEEL),
266 hid_input, &sc->sc_loc_z, &flags)) {
267 if ((flags & MOUSE_FLAGS_MASK) != MOUSE_FLAGS) {
268 sc->sc_loc_z.size = 0; /* Bad Z coord, ignore it */
274 /* figure out the number of buttons */
275 for (i = 1; i <= MAX_BUTTONS; i++)
276 if (!hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
277 hid_input, &loc_btn, 0))
279 sc->nbuttons = i - 1;
280 sc->sc_loc_btn = kmalloc(sizeof(struct hid_location)*sc->nbuttons,
281 M_USBDEV, M_INTWAIT);
283 kprintf("%s: %d buttons%s\n", device_get_nameunit(sc->sc_dev),
284 sc->nbuttons, sc->flags & UMS_Z? " and Z dir." : "");
286 for (i = 1; i <= sc->nbuttons; i++)
287 hid_locate(desc, size, HID_USAGE2(HUP_BUTTON, i),
288 hid_input, &sc->sc_loc_btn[i-1], 0);
290 sc->sc_isize = hid_report_size(desc, size, hid_input, &sc->sc_iid);
291 sc->sc_ibuf = kmalloc(sc->sc_isize, M_USB, M_INTWAIT);
292 sc->sc_ep_addr = ed->bEndpointAddress;
293 sc->sc_disconnected = 0;
297 DPRINTF(("ums_attach: sc=%p\n", sc));
298 DPRINTF(("ums_attach: X\t%d/%d\n",
299 sc->sc_loc_x.pos, sc->sc_loc_x.size));
300 DPRINTF(("ums_attach: Y\t%d/%d\n",
301 sc->sc_loc_y.pos, sc->sc_loc_y.size));
302 if (sc->flags & UMS_Z)
303 DPRINTF(("ums_attach: Z\t%d/%d\n",
304 sc->sc_loc_z.pos, sc->sc_loc_z.size));
305 for (i = 1; i <= sc->nbuttons; i++) {
306 DPRINTF(("ums_attach: B%d\t%d/%d\n",
307 i, sc->sc_loc_btn[i-1].pos,sc->sc_loc_btn[i-1].size));
309 DPRINTF(("ums_attach: size=%d, id=%d\n", sc->sc_isize, sc->sc_iid));
312 if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
313 sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
315 sc->hw.buttons = sc->nbuttons;
316 sc->hw.iftype = MOUSE_IF_USB;
317 sc->hw.type = MOUSE_MOUSE;
318 sc->hw.model = MOUSE_MODEL_GENERIC;
320 sc->mode.protocol = MOUSE_PROTO_MSC;
322 sc->mode.resolution = MOUSE_RES_UNKNOWN;
323 sc->mode.accelfactor = 0;
325 sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
326 sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
327 sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
329 sc->status.flags = 0;
330 sc->status.button = sc->status.obutton = 0;
331 sc->status.dx = sc->status.dy = sc->status.dz = 0;
333 dev_ops_add(&ums_ops, -1, device_get_unit(self));
334 make_dev(&ums_ops, device_get_unit(self),
335 UID_ROOT, GID_OPERATOR,
336 0644, "ums%d", device_get_unit(self));
338 if (usbd_get_quirks(uaa->device)->uq_flags & UQ_SPUR_BUT_UP) {
339 DPRINTF(("%s: Spurious button up events\n",
340 device_get_nameunit(sc->sc_dev)));
341 sc->flags |= UMS_SPUR_BUT_UP;
349 ums_detach(device_t self)
351 struct ums_softc *sc = device_get_softc(self);
356 DPRINTF(("%s: disconnected\n", device_get_nameunit(self)));
358 kfree(sc->sc_loc_btn, M_USB);
359 kfree(sc->sc_ibuf, M_USB);
361 /* someone waiting for data */
363 * XXX If we wakeup the process here, the device will be gone by
364 * the time the process gets a chance to notice. *_close and friends
365 * should be fixed to handle this case.
366 * Or we should do a delayed detach for this.
367 * Does this delay now force tsleep to exit with an error?
369 if (sc->state & UMS_ASLEEP) {
370 sc->state &= ~UMS_ASLEEP;
373 if (sc->state & UMS_SELECT) {
374 sc->state &= ~UMS_SELECT;
375 selwakeuppri(&sc->rsel, 0);
377 dev_ops_remove(&ums_ops, -1, device_get_unit(self));
383 ums_intr(usbd_xfer_handle xfer, usbd_private_handle addr,
386 struct ums_softc *sc = addr;
392 #define UMS_BUT(i) ((i) < 3 ? (((i) + 2) % 3) : (i))
394 DPRINTFN(5, ("ums_intr: sc=%p status=%d\n", sc, status));
395 DPRINTFN(5, ("ums_intr: data = %02x %02x %02x\n",
396 sc->sc_ibuf[0], sc->sc_ibuf[1], sc->sc_ibuf[2]));
398 if (status == USBD_CANCELLED)
401 if (status != USBD_NORMAL_COMPLETION) {
402 DPRINTF(("ums_intr: status=%d\n", status));
403 if (status == USBD_STALLED)
404 usbd_clear_endpoint_stall_async(sc->sc_intrpipe);
410 if (*ibuf++ != sc->sc_iid)
414 dx = hid_get_data(ibuf, &sc->sc_loc_x);
415 dy = -hid_get_data(ibuf, &sc->sc_loc_y);
416 dz = -hid_get_data(ibuf, &sc->sc_loc_z);
417 for (i = 0; i < sc->nbuttons; i++)
418 if (hid_get_data(ibuf, &sc->sc_loc_btn[i]))
419 buttons |= (1 << UMS_BUT(i));
421 if (dx || dy || dz || (sc->flags & UMS_Z)
422 || buttons != sc->status.button) {
423 DPRINTFN(5, ("ums_intr: x:%d y:%d z:%d buttons:0x%x\n",
424 dx, dy, dz, buttons));
426 sc->status.button = buttons;
431 /* Discard data in case of full buffer */
432 if (sc->qcount == sizeof(sc->qbuf)) {
433 DPRINTF(("Buffer full, discarded packet"));
438 * The Qtronix keyboard has a built in PS/2 port for a mouse.
439 * The firmware once in a while posts a spurious button up
440 * event. This event we ignore by doing a timeout for 50 msecs.
441 * If we receive dx=dy=dz=buttons=0 before we add the event to
443 * In any other case we delete the timeout event.
445 if (sc->flags & UMS_SPUR_BUT_UP &&
446 dx == 0 && dy == 0 && dz == 0 && buttons == 0) {
447 callout_reset(&sc->sc_timeout, MS_TO_TICKS(50),
448 ums_add_to_queue_timeout, (void *) sc);
450 callout_stop(&sc->sc_timeout);
451 ums_add_to_queue(sc, dx, dy, dz, buttons);
457 ums_add_to_queue_timeout(void *priv)
459 struct ums_softc *sc = priv;
462 ums_add_to_queue(sc, 0, 0, 0, 0);
467 ums_add_to_queue(struct ums_softc *sc, int dx, int dy, int dz, int buttons)
469 /* Discard data in case of full buffer */
470 if (sc->qhead+sc->mode.packetsize > sizeof(sc->qbuf)) {
471 DPRINTF(("Buffer full, discarded packet"));
475 if (dx > 254) dx = 254;
476 if (dx < -256) dx = -256;
477 if (dy > 254) dy = 254;
478 if (dy < -256) dy = -256;
479 if (dz > 126) dz = 126;
480 if (dz < -128) dz = -128;
482 sc->qbuf[sc->qhead] = sc->mode.syncmask[1];
483 sc->qbuf[sc->qhead] |= ~buttons & MOUSE_MSC_BUTTONS;
484 sc->qbuf[sc->qhead+1] = dx >> 1;
485 sc->qbuf[sc->qhead+2] = dy >> 1;
486 sc->qbuf[sc->qhead+3] = dx - (dx >> 1);
487 sc->qbuf[sc->qhead+4] = dy - (dy >> 1);
489 if (sc->mode.level == 1) {
490 sc->qbuf[sc->qhead+5] = dz >> 1;
491 sc->qbuf[sc->qhead+6] = dz - (dz >> 1);
492 sc->qbuf[sc->qhead+7] = ((~buttons >> 3)
493 & MOUSE_SYS_EXTBUTTONS);
496 sc->qhead += sc->mode.packetsize;
497 sc->qcount += sc->mode.packetsize;
498 /* wrap round at end of buffer */
499 if (sc->qhead >= sizeof(sc->qbuf))
502 /* someone waiting for data */
503 if (sc->state & UMS_ASLEEP) {
504 sc->state &= ~UMS_ASLEEP;
507 if (sc->state & UMS_SELECT) {
508 sc->state &= ~UMS_SELECT;
509 selwakeuppri(&sc->rsel, 0);
516 struct ums_softc *sc = v;
525 sc->qhead = sc->qtail = 0;
526 sc->status.flags = 0;
527 sc->status.button = sc->status.obutton = 0;
528 sc->status.dx = sc->status.dy = sc->status.dz = 0;
530 callout_init(&sc->sc_timeout);
532 /* Set up interrupt pipe. */
533 err = usbd_open_pipe_intr(sc->sc_iface, sc->sc_ep_addr,
534 USBD_SHORT_XFER_OK, &sc->sc_intrpipe, sc,
535 sc->sc_ibuf, sc->sc_isize, ums_intr,
536 USBD_DEFAULT_INTERVAL);
538 DPRINTF(("ums_enable: usbd_open_pipe_intr failed, error=%d\n",
547 ums_disable(void *priv)
549 struct ums_softc *sc = priv;
551 callout_stop(&sc->sc_timeout);
553 /* Disable interrupts. */
554 usbd_abort_pipe(sc->sc_intrpipe);
555 usbd_close_pipe(sc->sc_intrpipe);
560 DPRINTF(("Discarded %d bytes in queue\n", sc->qcount));
564 ums_open(struct dev_open_args *ap)
566 cdev_t dev = ap->a_head.a_dev;
567 struct ums_softc *sc;
569 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
573 return ums_enable(sc);
577 ums_close(struct dev_close_args *ap)
579 cdev_t dev = ap->a_head.a_dev;
580 struct ums_softc *sc;
582 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
594 ums_read(struct dev_read_args *ap)
596 cdev_t dev = ap->a_head.a_dev;
597 struct uio *uio = ap->a_uio;
598 struct ums_softc *sc;
599 char buf[sizeof(sc->qbuf)];
603 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
611 while (sc->qcount == 0 ) {
612 if (ap->a_ioflag & IO_NDELAY) { /* non-blocking I/O */
617 sc->state |= UMS_ASLEEP; /* blocking I/O */
618 error = tsleep(sc, PCATCH, "umsrea", 0);
622 } else if (!sc->sc_enabled) {
626 /* check whether the device is still there */
628 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
636 * The writer process only extends qcount and qtail. We could copy
637 * them and use the copies to do the copying out of the queue.
640 while ((sc->qcount > 0) && (uio->uio_resid > 0)) {
641 l = (sc->qcount < uio->uio_resid? sc->qcount:uio->uio_resid);
644 if (l > sizeof(sc->qbuf) - sc->qtail) /* transfer till end of buf */
645 l = sizeof(sc->qbuf) - sc->qtail;
648 uiomove(&sc->qbuf[sc->qtail], l, uio);
651 if ( sc->qcount - l < 0 ) {
652 DPRINTF(("qcount below 0, count=%d l=%d\n", sc->qcount, l));
655 sc->qcount -= l; /* remove the bytes from the buffer */
656 sc->qtail = (sc->qtail + l) % sizeof(sc->qbuf);
664 ums_poll(struct dev_poll_args *ap)
666 cdev_t dev = ap->a_head.a_dev;
667 struct ums_softc *sc;
670 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
678 if (ap->a_events & (POLLIN | POLLRDNORM)) {
680 revents = ap->a_events & (POLLIN | POLLRDNORM);
682 sc->state |= UMS_SELECT;
683 selrecord(curthread, &sc->rsel);
687 ap->a_events = revents;
692 ums_ioctl(struct dev_ioctl_args *ap)
694 cdev_t dev = ap->a_head.a_dev;
695 struct ums_softc *sc;
699 sc = devclass_get_softc(ums_devclass, UMSUNIT(dev));
705 case MOUSE_GETHWINFO:
706 *(mousehw_t *)ap->a_data = sc->hw;
709 *(mousemode_t *)ap->a_data = sc->mode;
712 mode = *(mousemode_t *)ap->a_data;
714 if (mode.level == -1)
715 /* don't change the current setting */
717 else if ((mode.level < 0) || (mode.level > 1))
721 sc->mode.level = mode.level;
723 if (sc->mode.level == 0) {
724 if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
725 sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
727 sc->hw.buttons = sc->nbuttons;
728 sc->mode.protocol = MOUSE_PROTO_MSC;
729 sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
730 sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
731 sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
732 } else if (sc->mode.level == 1) {
733 if (sc->nbuttons > MOUSE_SYS_MAXBUTTON)
734 sc->hw.buttons = MOUSE_SYS_MAXBUTTON;
736 sc->hw.buttons = sc->nbuttons;
737 sc->mode.protocol = MOUSE_PROTO_SYSMOUSE;
738 sc->mode.packetsize = MOUSE_SYS_PACKETSIZE;
739 sc->mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
740 sc->mode.syncmask[1] = MOUSE_SYS_SYNC;
743 bzero(sc->qbuf, sizeof(sc->qbuf));
744 sc->qhead = sc->qtail = sc->qcount = 0;
749 *(int *)ap->a_data = sc->mode.level;
752 if (*(int *)ap->a_data < 0 || *(int *)ap->a_data > 1)
756 sc->mode.level = *(int *)ap->a_data;
758 if (sc->mode.level == 0) {
759 if (sc->nbuttons > MOUSE_MSC_MAXBUTTON)
760 sc->hw.buttons = MOUSE_MSC_MAXBUTTON;
762 sc->hw.buttons = sc->nbuttons;
763 sc->mode.protocol = MOUSE_PROTO_MSC;
764 sc->mode.packetsize = MOUSE_MSC_PACKETSIZE;
765 sc->mode.syncmask[0] = MOUSE_MSC_SYNCMASK;
766 sc->mode.syncmask[1] = MOUSE_MSC_SYNC;
767 } else if (sc->mode.level == 1) {
768 if (sc->nbuttons > MOUSE_SYS_MAXBUTTON)
769 sc->hw.buttons = MOUSE_SYS_MAXBUTTON;
771 sc->hw.buttons = sc->nbuttons;
772 sc->mode.protocol = MOUSE_PROTO_SYSMOUSE;
773 sc->mode.packetsize = MOUSE_SYS_PACKETSIZE;
774 sc->mode.syncmask[0] = MOUSE_SYS_SYNCMASK;
775 sc->mode.syncmask[1] = MOUSE_SYS_SYNC;
778 bzero(sc->qbuf, sizeof(sc->qbuf));
779 sc->qhead = sc->qtail = sc->qcount = 0;
783 case MOUSE_GETSTATUS: {
784 mousestatus_t *status = (mousestatus_t *) ap->a_data;
787 *status = sc->status;
788 sc->status.obutton = sc->status.button;
789 sc->status.button = 0;
790 sc->status.dx = sc->status.dy = sc->status.dz = 0;
793 if (status->dx || status->dy || status->dz)
794 status->flags |= MOUSE_POSCHANGED;
795 if (status->button != status->obutton)
796 status->flags |= MOUSE_BUTTONSCHANGED;
806 DRIVER_MODULE(ums, uhub, ums_driver, ums_devclass, usbd_driver_load, 0);