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Assorted fixes to ugen(4) from FreeBSD.
[dragonfly.git] / sys / dev / usbmisc / ugen / ugen.c
blob3734e00fe29b43738bd6aa4986aaa9f55af2cdf8
1 /*
2 * $NetBSD: ugen.c,v 1.27 1999/10/28 12:08:38 augustss Exp $
3 * $NetBSD: ugen.c,v 1.59 2002/07/11 21:14:28 augustss Exp $
4 * $FreeBSD: src/sys/dev/usb/ugen.c,v 1.81 2003/11/09 09:17:22 tanimura Exp $
5 * $DragonFly: src/sys/dev/usbmisc/ugen/ugen.c,v 1.34 2008/05/13 08:35:12 hasso Exp $
6 */
7
8 /*
9 * Also already merged from NetBSD:
10 * $NetBSD: ugen.c,v 1.61 2002/09/23 05:51:20 simonb Exp $
11 * $NetBSD: ugen.c,v 1.64 2003/06/28 14:21:46 darrenr Exp $
12 * $NetBSD: ugen.c,v 1.65 2003/06/29 22:30:56 fvdl Exp $
13 */
14
15 /*
16 * Copyright (c) 1998 The NetBSD Foundation, Inc.
17 * All rights reserved.
18 *
19 * This code is derived from software contributed to The NetBSD Foundation
20 * by Lennart Augustsson (lennart@augustsson.net) at
21 * Carlstedt Research & Technology.
22 *
23 * Redistribution and use in source and binary forms, with or without
24 * modification, are permitted provided that the following conditions
25 * are met:
26 * 1. Redistributions of source code must retain the above copyright
27 * notice, this list of conditions and the following disclaimer.
28 * 2. Redistributions in binary form must reproduce the above copyright
29 * notice, this list of conditions and the following disclaimer in the
30 * documentation and/or other materials provided with the distribution.
31 * 3. All advertising materials mentioning features or use of this software
32 * must display the following acknowledgement:
33 * This product includes software developed by the NetBSD
34 * Foundation, Inc. and its contributors.
35 * 4. Neither the name of The NetBSD Foundation nor the names of its
36 * contributors may be used to endorse or promote products derived
37 * from this software without specific prior written permission.
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
40 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
41 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
43 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
44 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
45 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
46 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
47 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
49 * POSSIBILITY OF SUCH DAMAGE.
50 */
51
52
53 #include <sys/param.h>
54 #include <sys/systm.h>
55 #include <sys/kernel.h>
56 #include <sys/malloc.h>
57 #include <sys/module.h>
58 #include <sys/bus.h>
59 #include <sys/ioccom.h>
60 #include <sys/conf.h>
61 #include <sys/fcntl.h>
62 #include <sys/filio.h>
63 #include <sys/tty.h>
64 #include <sys/file.h>
65 #include <sys/select.h>
66 #include <sys/vnode.h>
67 #include <sys/poll.h>
68 #include <sys/sysctl.h>
69 #include <sys/thread2.h>
70
71 #include <bus/usb/usb.h>
72 #include <bus/usb/usbdi.h>
73 #include <bus/usb/usbdi_util.h>
74
75 #include "ugenbuf.h"
76
77 SYSCTL_NODE(_hw_usb, OID_AUTO, ugen, CTLFLAG_RW, 0, "USB ugen");
78
79 #ifdef USB_DEBUG
80 #define DPRINTF(x) if (ugendebug) kprintf x
81 #define DPRINTFN(n,x) if (ugendebug>(n)) kprintf x
82 int ugendebug = 0;
83 SYSCTL_INT(_hw_usb_ugen, OID_AUTO, debug, CTLFLAG_RW,
84 &ugendebug, 0, "ugen debug level");
85 #else
86 #define DPRINTF(x)
87 #define DPRINTFN(n,x)
88 #endif
89
90 static int ugen_bufsize = 16384;
91 SYSCTL_INT(_hw_usb_ugen, OID_AUTO, bufsize, CTLFLAG_RW,
92 &ugen_bufsize, 0, "ugen temporary buffer size");
93
94 #define UGEN_CHUNK 128 /* chunk size for read */
95 #define UGEN_IBSIZE 1020 /* buffer size */
96
97 #define UGEN_NISOFRAMES 500 /* 0.5 seconds worth */
98 #define UGEN_NISOREQS 6 /* number of outstanding xfer requests */
99 #define UGEN_NISORFRMS 4 /* number of frames (miliseconds) per req */
100
101 struct ugen_endpoint {
102 struct ugen_softc *sc;
103 cdev_t dev;
104 usb_endpoint_descriptor_t *edesc;
105 usbd_interface_handle iface;
106 int state;
107 #define UGEN_ASLP 0x02 /* waiting for data */
108 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */
109 usbd_pipe_handle pipeh;
110 struct clist q;
111 struct selinfo rsel;
112 u_char *ibuf; /* start of buffer (circular for isoc) */
113 u_char *fill; /* location for input (isoc) */
114 u_char *limit; /* end of circular buffer (isoc) */
115 u_char *cur; /* current read location (isoc) */
116 u_int32_t timeout;
117 struct isoreq {
118 struct ugen_endpoint *sce;
119 usbd_xfer_handle xfer;
120 void *dmabuf;
121 u_int16_t sizes[UGEN_NISORFRMS];
122 } isoreqs[UGEN_NISOREQS];
123 };
124
125 struct ugen_softc {
126 device_t sc_dev; /* base device */
127 usbd_device_handle sc_udev;
128
129 char sc_is_open[USB_MAX_ENDPOINTS];
130 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2];
131 #define OUT 0
132 #define IN 1
133
134 int sc_refcnt;
135 u_char sc_dying;
136 };
137
138 d_open_t ugenopen;
139 d_close_t ugenclose;
140 d_read_t ugenread;
141 d_write_t ugenwrite;
142 d_ioctl_t ugenioctl;
143 d_poll_t ugenpoll;
144
145 #define UGEN_CDEV_MAJOR 114
146
147 static struct dev_ops ugen_ops = {
148 { "ugen", UGEN_CDEV_MAJOR, 0 },
149 .d_open = ugenopen,
150 .d_close = ugenclose,
151 .d_read = ugenread,
152 .d_write = ugenwrite,
153 .d_ioctl = ugenioctl,
154 .d_poll = ugenpoll,
155 };
156
157 static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr,
158 usbd_status status);
159 static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
160 usbd_status status);
161 static int ugen_do_read(struct ugen_softc *, int, struct uio *, int);
162 static int ugen_do_write(struct ugen_softc *, int, struct uio *, int);
163 static int ugen_do_ioctl(struct ugen_softc *, int, u_long,
164 caddr_t, int);
165 static void ugen_make_devnodes(struct ugen_softc *sc);
166 static void ugen_destroy_devnodes(struct ugen_softc *sc);
167 static int ugen_set_config(struct ugen_softc *sc, int configno);
168 static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc,
169 int index, int *lenp);
170 static usbd_status ugen_set_interface(struct ugen_softc *, int, int);
171 static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx);
172
173 #define UGENUNIT(n) ((lminor(n) >> 4) & 0xff)
174 #define UGENENDPOINT(n) (minor(n) & 0xf)
175 #define UGENMINOR(u, e) (((u & 0xf) << 4) | ((u & 0xf0) << 12) | (e))
176 #define UGENUNITMASK 0xffff00f0
177
178 static device_probe_t ugen_match;
179 static device_attach_t ugen_attach;
180 static device_detach_t ugen_detach;
181
182 static devclass_t ugen_devclass;
183
184 static kobj_method_t ugen_methods[] = {
185 DEVMETHOD(device_probe, ugen_match),
186 DEVMETHOD(device_attach, ugen_attach),
187 DEVMETHOD(device_detach, ugen_detach),
188 {0,0}
189 };
190
191 static driver_t ugen_driver = {
192 "ugen",
193 ugen_methods,
194 sizeof(struct ugen_softc)
195 };
196
197 MODULE_DEPEND(ugen, usb, 1, 1, 1);
198
199 static int
200 ugen_match(device_t self)
201 {
202 struct usb_attach_arg *uaa = device_get_ivars(self);
203
204 #if 0
205 if (uaa->matchlvl)
206 return (uaa->matchlvl);
207 #endif
208 if (uaa->usegeneric)
209 return (UMATCH_GENERIC);
210 else
211 return (UMATCH_NONE);
212 }
213
214 static int
215 ugen_attach(device_t self)
216 {
217 struct ugen_softc *sc = device_get_softc(self);
218 struct usb_attach_arg *uaa = device_get_ivars(self);
219 usbd_device_handle udev;
220 usbd_status err;
221 int conf;
222
223 sc->sc_dev = self;
224 sc->sc_udev = udev = uaa->device;
225
226 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
227
228 /* First set configuration index 0, the default one for ugen. */
229 err = usbd_set_config_index(udev, 0, 0);
230 if (err) {
231 kprintf("%s: setting configuration index 0 failed\n",
232 device_get_nameunit(sc->sc_dev));
233 sc->sc_dying = 1;
234 return ENXIO;
235 }
236 conf = usbd_get_config_descriptor(udev)->bConfigurationValue;
237
238 /* Set up all the local state for this configuration. */
239 err = ugen_set_config(sc, conf);
240 if (err) {
241 kprintf("%s: setting configuration %d failed\n",
242 device_get_nameunit(sc->sc_dev), conf);
243 sc->sc_dying = 1;
244 return ENXIO;
245 }
246
247 /* the main device, ctrl endpoint */
248 dev_ops_add(&ugen_ops,
249 UGENUNITMASK, UGENMINOR(device_get_unit(sc->sc_dev), 0));
250 make_dev(&ugen_ops, UGENMINOR(device_get_unit(sc->sc_dev), 0),
251 UID_ROOT, GID_OPERATOR, 0644, "%s", device_get_nameunit(sc->sc_dev));
252
253 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev);
254 return 0;
255 }
256
257 static void
258 ugen_make_devnodes(struct ugen_softc *sc)
259 {
260 int endptno;
261 cdev_t dev;
262
263 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
264 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
265 sc->sc_endpoints[endptno][OUT].sc != NULL ) {
266 /* endpt can be 0x81 and 0x01, representing
267 * endpoint address 0x01 and IN/OUT directions.
268 * We map both endpts to the same device,
269 * IN is reading from it, OUT is writing to it.
270 *
271 * In the if clause above we check whether one
272 * of the structs is populated.
273 */
274 dev = make_dev(&ugen_ops,
275 UGENMINOR(device_get_unit(sc->sc_dev), endptno),
276 UID_ROOT, GID_OPERATOR, 0644,
277 "%s.%d",
278 device_get_nameunit(sc->sc_dev), endptno);
279 if (sc->sc_endpoints[endptno][IN].sc != NULL) {
280 reference_dev(dev);
281 if (sc->sc_endpoints[endptno][IN].dev)
282 release_dev(sc->sc_endpoints[endptno][IN].dev);
283 sc->sc_endpoints[endptno][IN].dev = dev;
284 }
285 if (sc->sc_endpoints[endptno][OUT].sc != NULL) {
286 reference_dev(dev);
287 if (sc->sc_endpoints[endptno][OUT].dev)
288 release_dev(sc->sc_endpoints[endptno][OUT].dev);
289 sc->sc_endpoints[endptno][OUT].dev = dev;
290 }
291 }
292 }
293 }
294
295 static void
296 ugen_destroy_devnodes(struct ugen_softc *sc)
297 {
298 int endptno, prev_sc_dying;
299 cdev_t dev;
300
301 prev_sc_dying = sc->sc_dying;
302 sc->sc_dying = 1;
303
304 /* destroy all devices for the other (existing) endpoints as well */
305 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
306 if (sc->sc_endpoints[endptno][IN].sc != NULL ||
307 sc->sc_endpoints[endptno][OUT].sc != NULL ) {
308 /* endpt can be 0x81 and 0x01, representing
309 * endpoint address 0x01 and IN/OUT directions.
310 * We map both endpoint addresses to the same device,
311 * IN is reading from it, OUT is writing to it.
312 *
313 * In the if clause above we check whether one
314 * of the structs is populated.
315 */
316 dev = sc->sc_endpoints[endptno][IN].dev;
317 if (dev != NULL) {
318 destroy_dev(dev);
319 sc->sc_endpoints[endptno][IN].dev = NULL;
320 }
321 dev = sc->sc_endpoints[endptno][OUT].dev;
322 if (dev != NULL) {
323 destroy_dev(dev);
324 sc->sc_endpoints[endptno][OUT].dev = NULL;
325 }
326 }
327 }
328 sc->sc_dying = prev_sc_dying;
329 }
330
331 static int
332 ugen_set_config(struct ugen_softc *sc, int configno)
333 {
334 usbd_device_handle dev = sc->sc_udev;
335 usbd_interface_handle iface;
336 usb_endpoint_descriptor_t *ed;
337 struct ugen_endpoint *sce;
338 u_int8_t niface, nendpt;
339 int ifaceno, endptno, endpt;
340 usbd_status err;
341 int dir;
342
343 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n",
344 device_get_nameunit(sc->sc_dev), configno, sc));
345
346 ugen_destroy_devnodes(sc);
347
348 /* We start at 1, not 0, because we don't care whether the
349 * control endpoint is open or not. It is always present.
350 */
351 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) {
352 if (sc->sc_is_open[endptno]) {
353 DPRINTFN(1,
354 ("ugen_set_config: %s - endpoint %d is open\n",
355 device_get_nameunit(sc->sc_dev), endptno));
356 return (USBD_IN_USE);
357 }
358 }
359
360 /* Avoid setting the current value. */
361 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) {
362 err = usbd_set_config_no(dev, configno, 1);
363 if (err)
364 return (err);
365 }
366
367 err = usbd_interface_count(dev, &niface);
368 if (err)
369 return (err);
370 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
371 for (ifaceno = 0; ifaceno < niface; ifaceno++) {
372 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
373 err = usbd_device2interface_handle(dev, ifaceno, &iface);
374 if (err)
375 return (err);
376 err = usbd_endpoint_count(iface, &nendpt);
377 if (err)
378 return (err);
379 for (endptno = 0; endptno < nendpt; endptno++) {
380 ed = usbd_interface2endpoint_descriptor(iface,endptno);
381 endpt = ed->bEndpointAddress;
382 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
383 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
384 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
385 "(%d,%d), sce=%p\n",
386 endptno, endpt, UE_GET_ADDR(endpt),
387 UE_GET_DIR(endpt), sce));
388 sce->sc = sc;
389 sce->edesc = ed;
390 sce->iface = iface;
391 }
392 }
393
394 ugen_make_devnodes(sc);
395
396 return (USBD_NORMAL_COMPLETION);
397 }
398
399 int
400 ugenopen(struct dev_open_args *ap)
401 {
402 cdev_t dev = ap->a_head.a_dev;
403 struct ugen_softc *sc;
404 int unit = UGENUNIT(dev);
405 int endpt = UGENENDPOINT(dev);
406 usb_endpoint_descriptor_t *edesc;
407 struct ugen_endpoint *sce;
408 int dir, isize;
409 usbd_status err;
410 usbd_xfer_handle xfer;
411 void *buf;
412 int i, j;
413
414 sc = devclass_get_softc(ugen_devclass, unit);
415 if (sc == NULL)
416 return (ENXIO);
417
418 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n",
419 ap->a_oflags, ap->a_devtype, unit, endpt));
420
421 if (sc->sc_dying)
422 return (ENXIO);
423
424 if (sc->sc_is_open[endpt])
425 return (EBUSY);
426
427 if (endpt == USB_CONTROL_ENDPOINT) {
428 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1;
429 return (0);
430 }
431
432 /* Make sure there are pipes for all directions. */
433 for (dir = OUT; dir <= IN; dir++) {
434 if (ap->a_oflags & (dir == OUT ? FWRITE : FREAD)) {
435 sce = &sc->sc_endpoints[endpt][dir];
436 if (sce == 0 || sce->edesc == 0)
437 return (ENXIO);
438 }
439 }
440
441 /* Actually open the pipes. */
442 /* XXX Should back out properly if it fails. */
443 for (dir = OUT; dir <= IN; dir++) {
444 if (!(ap->a_oflags & (dir == OUT ? FWRITE : FREAD)))
445 continue;
446 sce = &sc->sc_endpoints[endpt][dir];
447 sce->state = 0;
448 sce->timeout = USBD_NO_TIMEOUT;
449 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n",
450 sc, endpt, dir, sce));
451 edesc = sce->edesc;
452 switch (edesc->bmAttributes & UE_XFERTYPE) {
453 case UE_INTERRUPT:
454 if (dir == OUT) {
455 err = usbd_open_pipe(sce->iface,
456 edesc->bEndpointAddress, 0, &sce->pipeh);
457 if (err)
458 return (EIO);
459 break;
460 }
461 isize = UGETW(edesc->wMaxPacketSize);
462 if (isize == 0) /* shouldn't happen */
463 return (EINVAL);
464 sce->ibuf = kmalloc(isize, M_USBDEV, M_WAITOK);
465 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n",
466 endpt, isize));
467 if ((clist_alloc_cblocks(&sce->q, UGEN_IBSIZE,
468 UGEN_IBSIZE), 0) == -1)
469 return (ENOMEM);
470 err = usbd_open_pipe_intr(sce->iface,
471 edesc->bEndpointAddress,
472 USBD_SHORT_XFER_OK, &sce->pipeh, sce,
473 sce->ibuf, isize, ugenintr,
474 USBD_DEFAULT_INTERVAL);
475 if (err) {
476 kfree(sce->ibuf, M_USBDEV);
477 clist_free_cblocks(&sce->q);
478 return (EIO);
479 }
480 DPRINTFN(5, ("ugenopen: interrupt open done\n"));
481 break;
482 case UE_BULK:
483 err = usbd_open_pipe(sce->iface,
484 edesc->bEndpointAddress, 0, &sce->pipeh);
485 if (err)
486 return (EIO);
487 break;
488 case UE_ISOCHRONOUS:
489 if (dir == OUT)
490 return (EINVAL);
491 isize = UGETW(edesc->wMaxPacketSize);
492 if (isize == 0) /* shouldn't happen */
493 return (EINVAL);
494 sce->ibuf = kmalloc(isize * UGEN_NISOFRAMES,
495 M_USBDEV, M_WAITOK);
496 sce->cur = sce->fill = sce->ibuf;
497 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES;
498 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n",
499 endpt, isize));
500 err = usbd_open_pipe(sce->iface,
501 edesc->bEndpointAddress, 0, &sce->pipeh);
502 if (err) {
503 kfree(sce->ibuf, M_USBDEV);
504 return (EIO);
505 }
506 for(i = 0; i < UGEN_NISOREQS; ++i) {
507 sce->isoreqs[i].sce = sce;
508 xfer = usbd_alloc_xfer(sc->sc_udev);
509 if (xfer == 0)
510 goto bad;
511 sce->isoreqs[i].xfer = xfer;
512 buf = usbd_alloc_buffer
513 (xfer, isize * UGEN_NISORFRMS);
514 if (buf == 0) {
515 i++;
516 goto bad;
517 }
518 sce->isoreqs[i].dmabuf = buf;
519 for(j = 0; j < UGEN_NISORFRMS; ++j)
520 sce->isoreqs[i].sizes[j] = isize;
521 usbd_setup_isoc_xfer
522 (xfer, sce->pipeh, &sce->isoreqs[i],
523 sce->isoreqs[i].sizes,
524 UGEN_NISORFRMS, USBD_NO_COPY,
525 ugen_isoc_rintr);
526 (void)usbd_transfer(xfer);
527 }
528 DPRINTFN(5, ("ugenopen: isoc open done\n"));
529 break;
530 bad:
531 while (--i >= 0) /* implicit buffer free */
532 usbd_free_xfer(sce->isoreqs[i].xfer);
533 return (ENOMEM);
534 case UE_CONTROL:
535 sce->timeout = USBD_DEFAULT_TIMEOUT;
536 return (EINVAL);
537 }
538 }
539 sc->sc_is_open[endpt] = 1;
540 return (0);
541 }
542
543 int
544 ugenclose(struct dev_close_args *ap)
545 {
546 cdev_t dev = ap->a_head.a_dev;
547 int endpt = UGENENDPOINT(dev);
548 struct ugen_softc *sc;
549 struct ugen_endpoint *sce;
550 int dir;
551 int i;
552
553 sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
554
555 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n",
556 ap->a_fflag, ap->a_devtype, UGENUNIT(dev), endpt));
557
558 #ifdef DIAGNOSTIC
559 if (!sc->sc_is_open[endpt]) {
560 kprintf("ugenclose: not open\n");
561 return (EINVAL);
562 }
563 #endif
564
565 if (endpt == USB_CONTROL_ENDPOINT) {
566 DPRINTFN(5, ("ugenclose: close control\n"));
567 sc->sc_is_open[endpt] = 0;
568 return (0);
569 }
570
571 for (dir = OUT; dir <= IN; dir++) {
572 if (!(ap->a_fflag & (dir == OUT ? FWRITE : FREAD)))
573 continue;
574 sce = &sc->sc_endpoints[endpt][dir];
575 if (sce->pipeh == NULL)
576 continue;
577 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n",
578 endpt, dir, sce));
579
580 usbd_abort_pipe(sce->pipeh);
581 usbd_close_pipe(sce->pipeh);
582 sce->pipeh = NULL;
583
584 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
585 case UE_INTERRUPT:
586 ndflush(&sce->q, sce->q.c_cc);
587 clist_free_cblocks(&sce->q);
588 break;
589 case UE_ISOCHRONOUS:
590 for (i = 0; i < UGEN_NISOREQS; ++i)
591 usbd_free_xfer(sce->isoreqs[i].xfer);
592 default:
593 break;
594 }
595
596 if (sce->ibuf != NULL) {
597 kfree(sce->ibuf, M_USBDEV);
598 sce->ibuf = NULL;
599 clist_free_cblocks(&sce->q);
600 }
601 }
602 sc->sc_is_open[endpt] = 0;
603
604 return (0);
605 }
606
607 static int
608 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
609 {
610 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN];
611 u_int32_t n, tn;
612 char *buf;
613 usbd_xfer_handle xfer;
614 usbd_status err;
615 int error = 0;
616 int ugen_bbsize;
617 u_char buffer[UGEN_CHUNK];
618
619 DPRINTFN(5, ("%s: ugenread: %d\n", device_get_nameunit(sc->sc_dev), endpt));
620
621 if (sc->sc_dying)
622 return (EIO);
623
624 if (endpt == USB_CONTROL_ENDPOINT)
625 return (ENODEV);
626
627 #ifdef DIAGNOSTIC
628 if (sce->edesc == NULL) {
629 kprintf("ugenread: no edesc\n");
630 return (EIO);
631 }
632 if (sce->pipeh == NULL) {
633 kprintf("ugenread: no pipe\n");
634 return (EIO);
635 }
636 #endif
637
638 buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
639
640 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
641 case UE_INTERRUPT:
642 /* Block until activity occurred. */
643 crit_enter();
644 while (sce->q.c_cc == 0) {
645 if (flag & IO_NDELAY) {
646 crit_exit();
647 error = EWOULDBLOCK;
648 goto done;
649 }
650 sce->state |= UGEN_ASLP;
651 DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
652 error = tsleep(sce, PCATCH, "ugenri",
653 (sce->timeout * hz + 999) / 1000);
654 sce->state &= ~UGEN_ASLP;
655 DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
656 if (sc->sc_dying)
657 error = EIO;
658 if (error == EAGAIN) {
659 error = 0; /* timeout, return 0 bytes */
660 break;
661 }
662 if (error)
663 break;
664 }
665 crit_exit();
666
667 /* Transfer as many chunks as possible. */
668 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) {
669 n = min(sce->q.c_cc, uio->uio_resid);
670 if (n > sizeof(buffer))
671 n = sizeof(buffer);
672
673 /* Remove a small chunk from the input queue. */
674 q_to_b(&sce->q, buffer, n);
675 DPRINTFN(5, ("ugenread: got %d chars\n", n));
676
677 /* Copy the data to the user process. */
678 error = uiomove(buffer, n, uio);
679 if (error)
680 break;
681 }
682 break;
683 case UE_BULK:
684 xfer = usbd_alloc_xfer(sc->sc_udev);
685 if (xfer == 0) {
686 error = ENOMEM;
687 goto done;
688 }
689 while ((n = min(ugen_bbsize, uio->uio_resid)) != 0) {
690 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n));
691 tn = n;
692 err = usbd_bulk_transfer(
693 xfer, sce->pipeh,
694 sce->state & UGEN_SHORT_OK ?
695 USBD_SHORT_XFER_OK : 0,
696 sce->timeout, buf, &tn, "ugenrb");
697 if (err) {
698 if (err == USBD_INTERRUPTED)
699 error = EINTR;
700 else if (err == USBD_TIMEOUT)
701 error = ETIMEDOUT;
702 else
703 error = EIO;
704 break;
705 }
706 DPRINTFN(1, ("ugenread: got %d bytes\n", tn));
707 error = uiomove(buf, tn, uio);
708 if (error || tn < n)
709 break;
710 }
711 usbd_free_xfer(xfer);
712 break;
713 case UE_ISOCHRONOUS:
714 crit_enter();
715 while (sce->cur == sce->fill) {
716 if (flag & IO_NDELAY) {
717 crit_exit();
718 error = EWOULDBLOCK;
719 goto done;
720 }
721 sce->state |= UGEN_ASLP;
722 DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
723 error = tsleep(sce, PCATCH, "ugenri",
724 (sce->timeout * hz + 999) / 1000);
725 sce->state &= ~UGEN_ASLP;
726 DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
727 if (sc->sc_dying)
728 error = EIO;
729 if (error == EAGAIN) {
730 error = 0; /* timeout, return 0 bytes */
731 break;
732 }
733 if (error)
734 break;
735 }
736
737 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) {
738 if (sce->fill > sce->cur)
739 n = min(sce->fill - sce->cur, uio->uio_resid);
740 else
741 n = min(sce->limit - sce->cur, uio->uio_resid);
742
743 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n));
744
745 /* Copy the data to the user process. */
746 error = uiomove(sce->cur, n, uio);
747 if (error)
748 break;
749 sce->cur += n;
750 if(sce->cur >= sce->limit)
751 sce->cur = sce->ibuf;
752 }
753 crit_exit();
754 break;
755
756
757 default:
758 error = ENXIO;
759 break;
760 }
761 done:
762 relugenbuf(buf, ugen_bbsize);
763 return (error);
764 }
765
766 int
767 ugenread(struct dev_read_args *ap)
768 {
769 cdev_t dev = ap->a_head.a_dev;
770 int endpt = UGENENDPOINT(dev);
771 struct ugen_softc *sc;
772 int error;
773
774 sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
775
776 if (sc->sc_dying)
777 return (EIO);
778
779 sc->sc_refcnt++;
780 error = ugen_do_read(sc, endpt, ap->a_uio, ap->a_ioflag);
781 if (--sc->sc_refcnt < 0)
782 usb_detach_wakeup(sc->sc_dev);
783 return (error);
784 }
785
786 static int
787 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
788 {
789 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT];
790 u_int32_t n;
791 int error = 0;
792 int ugen_bbsize;
793 char *buf;
794 usbd_xfer_handle xfer;
795 usbd_status err;
796
797 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_get_nameunit(sc->sc_dev), endpt));
798
799 if (sc->sc_dying)
800 return (EIO);
801
802 if (endpt == USB_CONTROL_ENDPOINT)
803 return (ENODEV);
804
805 #ifdef DIAGNOSTIC
806 if (sce->edesc == NULL) {
807 kprintf("ugenwrite: no edesc\n");
808 return (EIO);
809 }
810 if (sce->pipeh == NULL) {
811 kprintf("ugenwrite: no pipe\n");
812 return (EIO);
813 }
814 #endif
815
816 buf = getugenbuf(ugen_bufsize, &ugen_bbsize);
817
818 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
819 case UE_BULK:
820 xfer = usbd_alloc_xfer(sc->sc_udev);
821 if (xfer == 0) {
822 error = EIO;
823 goto done;
824 }
825 while ((n = min(ugen_bbsize, uio->uio_resid)) != 0) {
826 error = uiomove(buf, n, uio);
827 if (error)
828 break;
829 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
830 err = usbd_bulk_transfer(xfer, sce->pipeh, 0,
831 sce->timeout, buf, &n,"ugenwb");
832 if (err) {
833 if (err == USBD_INTERRUPTED)
834 error = EINTR;
835 else if (err == USBD_TIMEOUT)
836 error = ETIMEDOUT;
837 else
838 error = EIO;
839 break;
840 }
841 }
842 usbd_free_xfer(xfer);
843 break;
844 case UE_INTERRUPT:
845 xfer = usbd_alloc_xfer(sc->sc_udev);
846 if (xfer == 0) {
847 error = EIO;
848 goto done;
849 }
850 while ((n = min(UGETW(sce->edesc->wMaxPacketSize),
851 uio->uio_resid)) != 0) {
852 error = uiomove(buf, n, uio);
853 if (error)
854 break;
855 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
856 err = usbd_intr_transfer(xfer, sce->pipeh, 0,
857 sce->timeout, buf, &n,"ugenwi");
858 if (err) {
859 if (err == USBD_INTERRUPTED)
860 error = EINTR;
861 else if (err == USBD_TIMEOUT)
862 error = ETIMEDOUT;
863 else
864 error = EIO;
865 break;
866 }
867 }
868 usbd_free_xfer(xfer);
869 break;
870 default:
871 error = ENXIO;
872 break;
873 }
874 done:
875 relugenbuf(buf, ugen_bbsize);
876 return (error);
877 }
878
879 int
880 ugenwrite(struct dev_write_args *ap)
881 {
882 cdev_t dev = ap->a_head.a_dev;
883 int endpt = UGENENDPOINT(dev);
884 struct ugen_softc *sc;
885 int error;
886
887 sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
888
889 if (sc->sc_dying)
890 return (EIO);
891
892 sc->sc_refcnt++;
893 error = ugen_do_write(sc, endpt, ap->a_uio, ap->a_ioflag);
894 if (--sc->sc_refcnt < 0)
895 usb_detach_wakeup(sc->sc_dev);
896 return (error);
897 }
898
899 static int
900 ugen_detach(device_t self)
901 {
902 struct ugen_softc *sc = device_get_softc(self);
903 struct ugen_endpoint *sce;
904 int i, dir;
905
906 DPRINTF(("ugen_detach: sc=%p\n", sc));
907
908 sc->sc_dying = 1;
909 /* Abort all pipes. Causes processes waiting for transfer to wake. */
910 for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
911 for (dir = OUT; dir <= IN; dir++) {
912 sce = &sc->sc_endpoints[i][dir];
913 if (sce && sce->pipeh)
914 usbd_abort_pipe(sce->pipeh);
915 selwakeup(&sce->rsel);
916 }
917 }
918 crit_enter();
919 if (--sc->sc_refcnt >= 0) {
920 /* Wake everyone */
921 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
922 wakeup(&sc->sc_endpoints[i][IN]);
923 /* Wait for processes to go away. */
924 usb_detach_wait(sc->sc_dev);
925 }
926 crit_exit();
927
928 /* destroy the device for the control endpoint */
929 ugen_destroy_devnodes(sc);
930 dev_ops_remove(&ugen_ops,
931 UGENUNITMASK, UGENMINOR(device_get_unit(sc->sc_dev), 0));
932 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev);
933 return (0);
934 }
935
936 static void
937 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
938 {
939 struct ugen_endpoint *sce = addr;
940 /*struct ugen_softc *sc = sce->sc;*/
941 u_int32_t count;
942 u_char *ibuf;
943
944 if (status == USBD_CANCELLED)
945 return;
946
947 if (status != USBD_NORMAL_COMPLETION) {
948 DPRINTF(("ugenintr: status=%d\n", status));
949 if (status == USBD_STALLED)
950 usbd_clear_endpoint_stall_async(sce->pipeh);
951 return;
952 }
953
954 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
955 ibuf = sce->ibuf;
956
957 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n",
958 xfer, status, count));
959 DPRINTFN(5, (" data = %02x %02x %02x\n",
960 ibuf[0], ibuf[1], ibuf[2]));
961
962 (void)b_to_q(ibuf, count, &sce->q);
963
964 if (sce->state & UGEN_ASLP) {
965 sce->state &= ~UGEN_ASLP;
966 DPRINTFN(5, ("ugen_intr: waking %p\n", sce));
967 wakeup(sce);
968 }
969 selwakeup(&sce->rsel);
970 }
971
972 static void
973 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
974 usbd_status status)
975 {
976 struct isoreq *req = addr;
977 struct ugen_endpoint *sce = req->sce;
978 u_int32_t count, n;
979 int i, isize;
980
981 /* Return if we are aborting. */
982 if (status == USBD_CANCELLED)
983 return;
984
985 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
986 DPRINTFN(5,("ugen_isoc_rintr: xfer %d, count=%d\n",
987 (int)(req - sce->isoreqs),
988 count));
989
990 /* throw away oldest input if the buffer is full */
991 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) {
992 sce->cur += count;
993 if(sce->cur >= sce->limit)
994 sce->cur = sce->ibuf + (sce->limit - sce->cur);
995 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n",
996 count));
997 }
998
999 isize = UGETW(sce->edesc->wMaxPacketSize);
1000 for (i = 0; i < UGEN_NISORFRMS; i++) {
1001 u_int32_t actlen = req->sizes[i];
1002 char const *buf = (char const *)req->dmabuf + isize * i;
1003
1004 /* copy data to buffer */
1005 while (actlen > 0) {
1006 n = min(actlen, sce->limit - sce->fill);
1007 memcpy(sce->fill, buf, n);
1008
1009 buf += n;
1010 actlen -= n;
1011 sce->fill += n;
1012 if(sce->fill == sce->limit)
1013 sce->fill = sce->ibuf;
1014 }
1015
1016 /* setup size for next transfer */
1017 req->sizes[i] = isize;
1018 }
1019
1020 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS,
1021 USBD_NO_COPY, ugen_isoc_rintr);
1022 (void)usbd_transfer(xfer);
1023
1024 if (sce->state & UGEN_ASLP) {
1025 sce->state &= ~UGEN_ASLP;
1026 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce));
1027 wakeup(sce);
1028 }
1029 selwakeup(&sce->rsel);
1030 }
1031
1032 static usbd_status
1033 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
1034 {
1035 usbd_interface_handle iface;
1036 usb_endpoint_descriptor_t *ed;
1037 usbd_status err;
1038 struct ugen_endpoint *sce;
1039 u_int8_t niface, nendpt, endptno, endpt;
1040 int dir;
1041
1042 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno));
1043
1044 err = usbd_interface_count(sc->sc_udev, &niface);
1045 if (err)
1046 return (err);
1047 if (ifaceidx < 0 || ifaceidx >= niface)
1048 return (USBD_INVAL);
1049
1050 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1051 if (err)
1052 return (err);
1053 err = usbd_endpoint_count(iface, &nendpt);
1054 if (err)
1055 return (err);
1056
1057 /* destroy the existing devices, we remake the new ones in a moment */
1058 ugen_destroy_devnodes(sc);
1059
1060 /* XXX should only do this after setting new altno has succeeded */
1061 for (endptno = 0; endptno < nendpt; endptno++) {
1062 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1063 endpt = ed->bEndpointAddress;
1064 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1065 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1066 sce->sc = 0;
1067 sce->edesc = 0;
1068 sce->iface = 0;
1069 }
1070
1071 /* change setting */
1072 err = usbd_set_interface(iface, altno);
1073 if (err)
1074 return (err);
1075
1076 err = usbd_endpoint_count(iface, &nendpt);
1077 if (err)
1078 return (err);
1079 for (endptno = 0; endptno < nendpt; endptno++) {
1080 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1081 endpt = ed->bEndpointAddress;
1082 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1083 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1084 sce->sc = sc;
1085 sce->edesc = ed;
1086 sce->iface = iface;
1087 }
1088
1089 /* make the new devices */
1090 ugen_make_devnodes(sc);
1091
1092 return (0);
1093 }
1094
1095 /* Retrieve a complete descriptor for a certain device and index. */
1096 static usb_config_descriptor_t *
1097 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp)
1098 {
1099 usb_config_descriptor_t *cdesc, *tdesc, cdescr;
1100 int len;
1101 usbd_status err;
1102
1103 if (index == USB_CURRENT_CONFIG_INDEX) {
1104 tdesc = usbd_get_config_descriptor(sc->sc_udev);
1105 len = UGETW(tdesc->wTotalLength);
1106 if (lenp)
1107 *lenp = len;
1108 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1109 memcpy(cdesc, tdesc, len);
1110 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len));
1111 } else {
1112 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr);
1113 if (err)
1114 return (0);
1115 len = UGETW(cdescr.wTotalLength);
1116 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len));
1117 if (lenp)
1118 *lenp = len;
1119 cdesc = kmalloc(len, M_TEMP, M_INTWAIT);
1120 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len);
1121 if (err) {
1122 kfree(cdesc, M_TEMP);
1123 return (0);
1124 }
1125 }
1126 return (cdesc);
1127 }
1128
1129 static int
1130 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx)
1131 {
1132 usbd_interface_handle iface;
1133 usbd_status err;
1134
1135 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1136 if (err)
1137 return (-1);
1138 return (usbd_get_interface_altindex(iface));
1139 }
1140
1141 static int
1142 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd,
1143 caddr_t addr, int flag)
1144 {
1145 struct ugen_endpoint *sce;
1146 usbd_status err;
1147 usbd_interface_handle iface;
1148 struct usb_config_desc *cd;
1149 usb_config_descriptor_t *cdesc;
1150 struct usb_interface_desc *id;
1151 usb_interface_descriptor_t *idesc;
1152 struct usb_endpoint_desc *ed;
1153 usb_endpoint_descriptor_t *edesc;
1154 struct usb_alt_interface *ai;
1155 struct usb_string_desc *si;
1156 u_int8_t conf, alt;
1157
1158 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd));
1159 if (sc->sc_dying)
1160 return (EIO);
1161
1162 switch (cmd) {
1163 case USB_SET_SHORT_XFER:
1164 /* This flag only affects read */
1165 if (endpt == USB_CONTROL_ENDPOINT)
1166 return (EINVAL);
1167 sce = &sc->sc_endpoints[endpt][IN];
1168
1169 if (sce->pipeh == NULL) {
1170 kprintf("ugenioctl: USB_SET_SHORT_XFER, no pipe\n");
1171 return (EIO);
1172 }
1173
1174 if (*(int *)addr)
1175 sce->state |= UGEN_SHORT_OK;
1176 else
1177 sce->state &= ~UGEN_SHORT_OK;
1178 return (0);
1179 case USB_SET_TIMEOUT:
1180 sce = &sc->sc_endpoints[endpt][IN];
1181 sce->timeout = *(int *)addr;
1182 sce = &sc->sc_endpoints[endpt][OUT];
1183 sce->timeout = *(int *)addr;
1184 return (0);
1185 default:
1186 break;
1187 }
1188
1189 if (endpt != USB_CONTROL_ENDPOINT)
1190 return (EINVAL);
1191
1192 switch (cmd) {
1193 #ifdef USB_DEBUG
1194 case USB_SETDEBUG:
1195 ugendebug = *(int *)addr;
1196 break;
1197 #endif
1198 case USB_GET_CONFIG:
1199 err = usbd_get_config(sc->sc_udev, &conf);
1200 if (err)
1201 return (EIO);
1202 *(int *)addr = conf;
1203 break;
1204 case USB_SET_CONFIG:
1205 if (!(flag & FWRITE))
1206 return (EPERM);
1207 err = ugen_set_config(sc, *(int *)addr);
1208 switch (err) {
1209 case USBD_NORMAL_COMPLETION:
1210 break;
1211 case USBD_IN_USE:
1212 return (EBUSY);
1213 default:
1214 return (EIO);
1215 }
1216 break;
1217 case USB_GET_ALTINTERFACE:
1218 ai = (struct usb_alt_interface *)addr;
1219 err = usbd_device2interface_handle(sc->sc_udev,
1220 ai->uai_interface_index, &iface);
1221 if (err)
1222 return (EINVAL);
1223 idesc = usbd_get_interface_descriptor(iface);
1224 if (idesc == NULL)
1225 return (EIO);
1226 ai->uai_alt_no = idesc->bAlternateSetting;
1227 break;
1228 case USB_SET_ALTINTERFACE:
1229 if (!(flag & FWRITE))
1230 return (EPERM);
1231 ai = (struct usb_alt_interface *)addr;
1232 err = usbd_device2interface_handle(sc->sc_udev,
1233 ai->uai_interface_index, &iface);
1234 if (err)
1235 return (EINVAL);
1236 err = ugen_set_interface(sc, ai->uai_interface_index, ai->uai_alt_no);
1237 if (err)
1238 return (EINVAL);
1239 break;
1240 case USB_GET_NO_ALT:
1241 ai = (struct usb_alt_interface *)addr;
1242 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0);
1243 if (cdesc == NULL)
1244 return (EINVAL);
1245 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0);
1246 if (idesc == NULL) {
1247 kfree(cdesc, M_TEMP);
1248 return (EINVAL);
1249 }
1250 ai->uai_alt_no = usbd_get_no_alts(cdesc, idesc->bInterfaceNumber);
1251 kfree(cdesc, M_TEMP);
1252 break;
1253 case USB_GET_DEVICE_DESC:
1254 *(usb_device_descriptor_t *)addr =
1255 *usbd_get_device_descriptor(sc->sc_udev);
1256 break;
1257 case USB_GET_CONFIG_DESC:
1258 cd = (struct usb_config_desc *)addr;
1259 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0);
1260 if (cdesc == NULL)
1261 return (EINVAL);
1262 cd->ucd_desc = *cdesc;
1263 kfree(cdesc, M_TEMP);
1264 break;
1265 case USB_GET_INTERFACE_DESC:
1266 id = (struct usb_interface_desc *)addr;
1267 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0);
1268 if (cdesc == NULL)
1269 return (EINVAL);
1270 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX &&
1271 id->uid_alt_index == USB_CURRENT_ALT_INDEX)
1272 alt = ugen_get_alt_index(sc, id->uid_interface_index);
1273 else
1274 alt = id->uid_alt_index;
1275 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt);
1276 if (idesc == NULL) {
1277 kfree(cdesc, M_TEMP);
1278 return (EINVAL);
1279 }
1280 id->uid_desc = *idesc;
1281 kfree(cdesc, M_TEMP);
1282 break;
1283 case USB_GET_ENDPOINT_DESC:
1284 ed = (struct usb_endpoint_desc *)addr;
1285 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0);
1286 if (cdesc == NULL)
1287 return (EINVAL);
1288 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX &&
1289 ed->ued_alt_index == USB_CURRENT_ALT_INDEX)
1290 alt = ugen_get_alt_index(sc, ed->ued_interface_index);
1291 else
1292 alt = ed->ued_alt_index;
1293 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index,
1294 alt, ed->ued_endpoint_index);
1295 if (edesc == NULL) {
1296 kfree(cdesc, M_TEMP);
1297 return (EINVAL);
1298 }
1299 ed->ued_desc = *edesc;
1300 kfree(cdesc, M_TEMP);
1301 break;
1302 case USB_GET_FULL_DESC:
1303 {
1304 int len;
1305 struct iovec iov;
1306 struct uio uio;
1307 struct usb_full_desc *fd = (struct usb_full_desc *)addr;
1308 int error;
1309
1310 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len);
1311 if (len > fd->ufd_size)
1312 len = fd->ufd_size;
1313 iov.iov_base = (caddr_t)fd->ufd_data;
1314 iov.iov_len = len;
1315 uio.uio_iov = &iov;
1316 uio.uio_iovcnt = 1;
1317 uio.uio_resid = len;
1318 uio.uio_offset = 0;
1319 uio.uio_segflg = UIO_USERSPACE;
1320 uio.uio_rw = UIO_READ;
1321 uio.uio_td = curthread;
1322 error = uiomove((void *)cdesc, len, &uio);
1323 kfree(cdesc, M_TEMP);
1324 return (error);
1325 }
1326 case USB_GET_STRING_DESC:
1327 {
1328 int size;
1329
1330 si = (struct usb_string_desc *)addr;
1331 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index,
1332 si->usd_language_id, &si->usd_desc, &size);
1333 if (err)
1334 return (EINVAL);
1335 break;
1336 }
1337 case USB_DO_REQUEST:
1338 {
1339 struct usb_ctl_request *ur = (void *)addr;
1340 int len = UGETW(ur->ucr_request.wLength);
1341 struct iovec iov;
1342 struct uio uio;
1343 void *ptr = 0;
1344 usbd_status err;
1345 int error = 0;
1346
1347 if (!(flag & FWRITE))
1348 return (EPERM);
1349 /* Avoid requests that would damage the bus integrity. */
1350 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1351 ur->ucr_request.bRequest == UR_SET_ADDRESS) ||
1352 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1353 ur->ucr_request.bRequest == UR_SET_CONFIG) ||
1354 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE &&
1355 ur->ucr_request.bRequest == UR_SET_INTERFACE))
1356 return (EINVAL);
1357
1358 if (len < 0 || len > 32767)
1359 return (EINVAL);
1360 if (len != 0) {
1361 iov.iov_base = (caddr_t)ur->ucr_data;
1362 iov.iov_len = len;
1363 uio.uio_iov = &iov;
1364 uio.uio_iovcnt = 1;
1365 uio.uio_resid = len;
1366 uio.uio_offset = 0;
1367 uio.uio_segflg = UIO_USERSPACE;
1368 uio.uio_rw =
1369 ur->ucr_request.bmRequestType & UT_READ ?
1370 UIO_READ : UIO_WRITE;
1371 uio.uio_td = curthread;
1372 ptr = kmalloc(len, M_TEMP, M_WAITOK);
1373 if (uio.uio_rw == UIO_WRITE) {
1374 error = uiomove(ptr, len, &uio);
1375 if (error)
1376 goto ret;
1377 }
1378 }
1379 sce = &sc->sc_endpoints[endpt][IN];
1380 err = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request,
1381 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout);
1382 if (err) {
1383 error = EIO;
1384 goto ret;
1385 }
1386 if (len != 0) {
1387 if (uio.uio_rw == UIO_READ) {
1388 error = uiomove(ptr, len, &uio);
1389 if (error)
1390 goto ret;
1391 }
1392 }
1393 ret:
1394 if (ptr)
1395 kfree(ptr, M_TEMP);
1396 return (error);
1397 }
1398 case USB_GET_DEVICEINFO:
1399 usbd_fill_deviceinfo(sc->sc_udev,
1400 (struct usb_device_info *)addr, 1);
1401 break;
1402 default:
1403 return (EINVAL);
1404 }
1405 return (0);
1406 }
1407
1408 int
1409 ugenioctl(struct dev_ioctl_args *ap)
1410 {
1411 cdev_t dev = ap->a_head.a_dev;
1412 int endpt = UGENENDPOINT(dev);
1413 struct ugen_softc *sc;
1414 int error;
1415
1416 sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
1417 if (sc->sc_dying)
1418 return (EIO);
1419
1420 sc->sc_refcnt++;
1421 error = ugen_do_ioctl(sc, endpt, ap->a_cmd, ap->a_data, ap->a_fflag);
1422 if (--sc->sc_refcnt < 0)
1423 usb_detach_wakeup(sc->sc_dev);
1424 return (error);
1425 }
1426
1427 int
1428 ugenpoll(struct dev_poll_args *ap)
1429 {
1430 cdev_t dev = ap->a_head.a_dev;
1431 struct ugen_softc *sc;
1432 struct ugen_endpoint *sce_in, *sce_out;
1433 usb_endpoint_descriptor_t *edesc;
1434 int revents = 0;
1435
1436 sc = devclass_get_softc(ugen_devclass, UGENUNIT(dev));
1437
1438 if (sc->sc_dying) {
1439 return ((ap->a_events & (POLLIN | POLLOUT | POLLRDNORM |
1440 POLLWRNORM)) | POLLHUP);
1441 }
1442
1443 /* Do not allow to poll a control endpoint */
1444 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) {
1445 return (ap->a_events & (POLLIN | POLLOUT | POLLRDNORM |
1446 POLLWRNORM));
1447 }
1448
1449 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
1450 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT];
1451 edesc = (sce_in->edesc != NULL) ? sce_in->edesc : sce_out->edesc;
1452 KASSERT(edesc != NULL, ("ugenpoll: NULL edesc"));
1453
1454 if (sce_in->edesc == NULL || sce_in->pipeh == NULL)
1455 sce_in = NULL;
1456 if (sce_out->edesc == NULL || sce_out->pipeh == NULL)
1457 sce_out = NULL;
1458
1459 crit_enter();
1460 switch (edesc->bmAttributes & UE_XFERTYPE) {
1461 case UE_INTERRUPT:
1462 if (sce_in != NULL && (ap->a_events & (POLLIN | POLLRDNORM))) {
1463 if (sce_in->q.c_cc > 0)
1464 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1465 else
1466 selrecord(curthread, &sce_in->rsel);
1467 }
1468 if (sce_out != NULL && (ap->a_events & (POLLOUT | POLLWRNORM))) {
1469 if (sce_out->q.c_cc > 0)
1470 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
1471 else
1472 selrecord(curthread, &sce_out->rsel);
1473 }
1474 break;
1475 case UE_ISOCHRONOUS:
1476 if (sce_in != NULL && (ap->a_events & (POLLIN | POLLRDNORM))) {
1477 if (sce_in->cur != sce_in->fill)
1478 revents |= ap->a_events & (POLLIN | POLLRDNORM);
1479 else
1480 selrecord(curthread, &sce_in->rsel);
1481 }
1482 if (sce_out != NULL && (ap->a_events & (POLLOUT | POLLWRNORM))) {
1483 if (sce_out->cur != sce_out->fill)
1484 revents |= ap->a_events & (POLLOUT | POLLWRNORM);
1485 else
1486 selrecord(curthread, &sce_out->rsel);
1487 }
1488 break;
1489 case UE_BULK:
1490 /*
1491 * We have no easy way of determining if a read will
1492 * yield any data or a write will happen.
1493 * Pretend they will.
1494 */
1495 revents |= ap->a_events &
1496 (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM);
1497 break;
1498 default:
1499 break;
1500 }
1501 crit_exit();
1502 ap->a_events = revents;
1503 return (0);
1504 }
1505
1506 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0);
1507
DragonFly BSD