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[netbsd-mini2440.git] / sys / dev / usb / ugen.c
blob8a4f493cfff05c18f56362f3b01b66f8bddce06a
1 /* $NetBSD: ugen.c,v 1.107 2009/12/23 01:04:45 pooka Exp $ */
2
3 /*
4 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Lennart Augustsson (lennart@augustsson.net) at
9 * Carlstedt Research & Technology.
10 *
11 * Copyright (c) 2006 BBN Technologies Corp. All rights reserved.
12 * Effort sponsored in part by the Defense Advanced Research Projects
13 * Agency (DARPA) and the Department of the Interior National Business
14 * Center under agreement number NBCHC050166.
15 *
16 * Redistribution and use in source and binary forms, with or without
17 * modification, are permitted provided that the following conditions
18 * are met:
19 * 1. Redistributions of source code must retain the above copyright
20 * notice, this list of conditions and the following disclaimer.
21 * 2. Redistributions in binary form must reproduce the above copyright
22 * notice, this list of conditions and the following disclaimer in the
23 * documentation and/or other materials provided with the distribution.
24 *
25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
36 */
37
38
39 #include <sys/cdefs.h>
40 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.107 2009/12/23 01:04:45 pooka Exp $");
41
42 #include "opt_compat_netbsd.h"
43
44 #include <sys/param.h>
45 #include <sys/systm.h>
46 #include <sys/kernel.h>
47 #include <sys/malloc.h>
48 #if defined(__NetBSD__) || defined(__OpenBSD__)
49 #include <sys/device.h>
50 #include <sys/ioctl.h>
51 #elif defined(__FreeBSD__)
52 #include <sys/module.h>
53 #include <sys/bus.h>
54 #include <sys/ioccom.h>
55 #include <sys/conf.h>
56 #include <sys/fcntl.h>
57 #include <sys/filio.h>
58 #endif
59 #include <sys/conf.h>
60 #include <sys/tty.h>
61 #include <sys/file.h>
62 #include <sys/select.h>
63 #include <sys/proc.h>
64 #include <sys/vnode.h>
65 #include <sys/poll.h>
66
67 #include <dev/usb/usb.h>
68 #include <dev/usb/usbdi.h>
69 #include <dev/usb/usbdi_util.h>
70
71 #ifdef UGEN_DEBUG
72 #define DPRINTF(x) if (ugendebug) logprintf x
73 #define DPRINTFN(n,x) if (ugendebug>(n)) logprintf x
74 int ugendebug = 0;
75 #else
76 #define DPRINTF(x)
77 #define DPRINTFN(n,x)
78 #endif
79
80 #define UGEN_CHUNK 128 /* chunk size for read */
81 #define UGEN_IBSIZE 1020 /* buffer size */
82 #define UGEN_BBSIZE 1024
83
84 #define UGEN_NISOFRAMES 500 /* 0.5 seconds worth */
85 #define UGEN_NISOREQS 6 /* number of outstanding xfer requests */
86 #define UGEN_NISORFRMS 4 /* number of frames (miliseconds) per req */
87
88 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */
89 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */
90
91 struct ugen_endpoint {
92 struct ugen_softc *sc;
93 usb_endpoint_descriptor_t *edesc;
94 usbd_interface_handle iface;
95 int state;
96 #define UGEN_ASLP 0x02 /* waiting for data */
97 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */
98 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */
99 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */
100 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */
101 usbd_pipe_handle pipeh;
102 struct clist q;
103 struct selinfo rsel;
104 u_char *ibuf; /* start of buffer (circular for isoc) */
105 u_char *fill; /* location for input (isoc) */
106 u_char *limit; /* end of circular buffer (isoc) */
107 u_char *cur; /* current read location (isoc) */
108 u_int32_t timeout;
109 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */
110 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */
111 u_int32_t ra_wb_used; /* how much is in buffer */
112 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */
113 usbd_xfer_handle ra_wb_xfer;
114 struct isoreq {
115 struct ugen_endpoint *sce;
116 usbd_xfer_handle xfer;
117 void *dmabuf;
118 u_int16_t sizes[UGEN_NISORFRMS];
119 } isoreqs[UGEN_NISOREQS];
120 };
121
122 struct ugen_softc {
123 USBBASEDEVICE sc_dev; /* base device */
124 usbd_device_handle sc_udev;
125
126 char sc_is_open[USB_MAX_ENDPOINTS];
127 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2];
128 #define OUT 0
129 #define IN 1
130
131 int sc_refcnt;
132 char sc_buffer[UGEN_BBSIZE];
133 u_char sc_dying;
134 };
135
136 #if defined(__NetBSD__)
137 dev_type_open(ugenopen);
138 dev_type_close(ugenclose);
139 dev_type_read(ugenread);
140 dev_type_write(ugenwrite);
141 dev_type_ioctl(ugenioctl);
142 dev_type_poll(ugenpoll);
143 dev_type_kqfilter(ugenkqfilter);
144
145 const struct cdevsw ugen_cdevsw = {
146 ugenopen, ugenclose, ugenread, ugenwrite, ugenioctl,
147 nostop, notty, ugenpoll, nommap, ugenkqfilter, D_OTHER,
148 };
149 #elif defined(__OpenBSD__)
150 cdev_decl(ugen);
151 #elif defined(__FreeBSD__)
152 d_open_t ugenopen;
153 d_close_t ugenclose;
154 d_read_t ugenread;
155 d_write_t ugenwrite;
156 d_ioctl_t ugenioctl;
157 d_poll_t ugenpoll;
158
159 #define UGEN_CDEV_MAJOR 114
160
161 Static struct cdevsw ugen_cdevsw = {
162 /* open */ ugenopen,
163 /* close */ ugenclose,
164 /* read */ ugenread,
165 /* write */ ugenwrite,
166 /* ioctl */ ugenioctl,
167 /* poll */ ugenpoll,
168 /* mmap */ nommap,
169 /* strategy */ nostrategy,
170 /* name */ "ugen",
171 /* maj */ UGEN_CDEV_MAJOR,
172 /* dump */ nodump,
173 /* psize */ nopsize,
174 /* flags */ 0,
175 /* bmaj */ -1
176 };
177 #endif
178
179 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr,
180 usbd_status status);
181 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
182 usbd_status status);
183 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr,
184 usbd_status status);
185 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr,
186 usbd_status status);
187 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int);
188 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int);
189 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long,
190 void *, int, struct lwp *);
191 Static int ugen_set_config(struct ugen_softc *sc, int configno);
192 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc,
193 int index, int *lenp);
194 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int);
195 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx);
196
197 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf)
198 #define UGENENDPOINT(n) (minor(n) & 0xf)
199 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e)))
200
201 USB_DECLARE_DRIVER(ugen);
202
203 /* toggle to control attach priority. -1 means "let autoconf decide" */
204 int ugen_override = -1;
205
206 USB_MATCH(ugen)
207 {
208 USB_MATCH_START(ugen, uaa);
209 int override;
210
211 if (ugen_override != -1)
212 override = ugen_override;
213 else
214 override = match->cf_flags & 1;
215
216 if (override)
217 return (UMATCH_HIGHEST);
218 else if (uaa->usegeneric)
219 return (UMATCH_GENERIC);
220 else
221 return (UMATCH_NONE);
222 }
223
224 USB_ATTACH(ugen)
225 {
226 USB_ATTACH_START(ugen, sc, uaa);
227 usbd_device_handle udev;
228 char *devinfop;
229 usbd_status err;
230 int i, dir, conf;
231
232 aprint_naive("\n");
233 aprint_normal("\n");
234
235 devinfop = usbd_devinfo_alloc(uaa->device, 0);
236 aprint_normal_dev(self, "%s\n", devinfop);
237 usbd_devinfo_free(devinfop);
238
239 sc->sc_dev = self;
240 sc->sc_udev = udev = uaa->device;
241
242 /* First set configuration index 0, the default one for ugen. */
243 err = usbd_set_config_index(udev, 0, 0);
244 if (err) {
245 aprint_error_dev(self,
246 "setting configuration index 0 failed\n");
247 sc->sc_dying = 1;
248 USB_ATTACH_ERROR_RETURN;
249 }
250 conf = usbd_get_config_descriptor(udev)->bConfigurationValue;
251
252 /* Set up all the local state for this configuration. */
253 err = ugen_set_config(sc, conf);
254 if (err) {
255 aprint_error_dev(self, "setting configuration %d failed\n",
256 conf);
257 sc->sc_dying = 1;
258 USB_ATTACH_ERROR_RETURN;
259 }
260
261 #ifdef __FreeBSD__
262 {
263 static int global_init_done = 0;
264 if (!global_init_done) {
265 cdevsw_add(&ugen_cdevsw);
266 global_init_done = 1;
267 }
268 }
269 #endif
270 for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
271 for (dir = OUT; dir <= IN; dir++) {
272 struct ugen_endpoint *sce;
273
274 sce = &sc->sc_endpoints[i][dir];
275 selinit(&sce->rsel);
276 }
277 }
278
279 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev,
280 USBDEV(sc->sc_dev));
281
282 if (!pmf_device_register(self, NULL, NULL))
283 aprint_error_dev(self, "couldn't establish power handler\n");
284
285 USB_ATTACH_SUCCESS_RETURN;
286 }
287
288 Static int
289 ugen_set_config(struct ugen_softc *sc, int configno)
290 {
291 usbd_device_handle dev = sc->sc_udev;
292 usb_config_descriptor_t *cdesc;
293 usbd_interface_handle iface;
294 usb_endpoint_descriptor_t *ed;
295 struct ugen_endpoint *sce;
296 u_int8_t niface, nendpt;
297 int ifaceno, endptno, endpt;
298 usbd_status err;
299 int dir;
300
301 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n",
302 USBDEVNAME(sc->sc_dev), configno, sc));
303
304 /*
305 * We start at 1, not 0, because we don't care whether the
306 * control endpoint is open or not. It is always present.
307 */
308 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++)
309 if (sc->sc_is_open[endptno]) {
310 DPRINTFN(1,
311 ("ugen_set_config: %s - endpoint %d is open\n",
312 USBDEVNAME(sc->sc_dev), endptno));
313 return (USBD_IN_USE);
314 }
315
316 /* Avoid setting the current value. */
317 cdesc = usbd_get_config_descriptor(dev);
318 if (!cdesc || cdesc->bConfigurationValue != configno) {
319 err = usbd_set_config_no(dev, configno, 1);
320 if (err)
321 return (err);
322 }
323
324 err = usbd_interface_count(dev, &niface);
325 if (err)
326 return (err);
327 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints);
328 for (ifaceno = 0; ifaceno < niface; ifaceno++) {
329 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno));
330 err = usbd_device2interface_handle(dev, ifaceno, &iface);
331 if (err)
332 return (err);
333 err = usbd_endpoint_count(iface, &nendpt);
334 if (err)
335 return (err);
336 for (endptno = 0; endptno < nendpt; endptno++) {
337 ed = usbd_interface2endpoint_descriptor(iface,endptno);
338 KASSERT(ed != NULL);
339 endpt = ed->bEndpointAddress;
340 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
341 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
342 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x"
343 "(%d,%d), sce=%p\n",
344 endptno, endpt, UE_GET_ADDR(endpt),
345 UE_GET_DIR(endpt), sce));
346 sce->sc = sc;
347 sce->edesc = ed;
348 sce->iface = iface;
349 }
350 }
351 return (USBD_NORMAL_COMPLETION);
352 }
353
354 int
355 ugenopen(dev_t dev, int flag, int mode, struct lwp *l)
356 {
357 struct ugen_softc *sc;
358 int unit = UGENUNIT(dev);
359 int endpt = UGENENDPOINT(dev);
360 usb_endpoint_descriptor_t *edesc;
361 struct ugen_endpoint *sce;
362 int dir, isize;
363 usbd_status err;
364 usbd_xfer_handle xfer;
365 void *tbuf;
366 int i, j;
367
368 USB_GET_SC_OPEN(ugen, unit, sc);
369
370 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n",
371 flag, mode, unit, endpt));
372
373 if (sc == NULL || sc->sc_dying)
374 return (ENXIO);
375
376 /* The control endpoint allows multiple opens. */
377 if (endpt == USB_CONTROL_ENDPOINT) {
378 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1;
379 return (0);
380 }
381
382 if (sc->sc_is_open[endpt])
383 return (EBUSY);
384
385 /* Make sure there are pipes for all directions. */
386 for (dir = OUT; dir <= IN; dir++) {
387 if (flag & (dir == OUT ? FWRITE : FREAD)) {
388 sce = &sc->sc_endpoints[endpt][dir];
389 if (sce == 0 || sce->edesc == 0)
390 return (ENXIO);
391 }
392 }
393
394 /* Actually open the pipes. */
395 /* XXX Should back out properly if it fails. */
396 for (dir = OUT; dir <= IN; dir++) {
397 if (!(flag & (dir == OUT ? FWRITE : FREAD)))
398 continue;
399 sce = &sc->sc_endpoints[endpt][dir];
400 sce->state = 0;
401 sce->timeout = USBD_NO_TIMEOUT;
402 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n",
403 sc, endpt, dir, sce));
404 edesc = sce->edesc;
405 switch (edesc->bmAttributes & UE_XFERTYPE) {
406 case UE_INTERRUPT:
407 if (dir == OUT) {
408 err = usbd_open_pipe(sce->iface,
409 edesc->bEndpointAddress, 0, &sce->pipeh);
410 if (err)
411 return (EIO);
412 break;
413 }
414 isize = UGETW(edesc->wMaxPacketSize);
415 if (isize == 0) /* shouldn't happen */
416 return (EINVAL);
417 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK);
418 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n",
419 endpt, isize));
420 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1)
421 return (ENOMEM);
422 err = usbd_open_pipe_intr(sce->iface,
423 edesc->bEndpointAddress,
424 USBD_SHORT_XFER_OK, &sce->pipeh, sce,
425 sce->ibuf, isize, ugenintr,
426 USBD_DEFAULT_INTERVAL);
427 if (err) {
428 free(sce->ibuf, M_USBDEV);
429 clfree(&sce->q);
430 return (EIO);
431 }
432 DPRINTFN(5, ("ugenopen: interrupt open done\n"));
433 break;
434 case UE_BULK:
435 err = usbd_open_pipe(sce->iface,
436 edesc->bEndpointAddress, 0, &sce->pipeh);
437 if (err)
438 return (EIO);
439 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE;
440 /*
441 * Use request size for non-RA/WB transfers
442 * as the default.
443 */
444 sce->ra_wb_reqsize = UGEN_BBSIZE;
445 break;
446 case UE_ISOCHRONOUS:
447 if (dir == OUT)
448 return (EINVAL);
449 isize = UGETW(edesc->wMaxPacketSize);
450 if (isize == 0) /* shouldn't happen */
451 return (EINVAL);
452 sce->ibuf = malloc(isize * UGEN_NISOFRAMES,
453 M_USBDEV, M_WAITOK);
454 sce->cur = sce->fill = sce->ibuf;
455 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES;
456 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n",
457 endpt, isize));
458 err = usbd_open_pipe(sce->iface,
459 edesc->bEndpointAddress, 0, &sce->pipeh);
460 if (err) {
461 free(sce->ibuf, M_USBDEV);
462 return (EIO);
463 }
464 for(i = 0; i < UGEN_NISOREQS; ++i) {
465 sce->isoreqs[i].sce = sce;
466 xfer = usbd_alloc_xfer(sc->sc_udev);
467 if (xfer == 0)
468 goto bad;
469 sce->isoreqs[i].xfer = xfer;
470 tbuf = usbd_alloc_buffer
471 (xfer, isize * UGEN_NISORFRMS);
472 if (tbuf == 0) {
473 i++;
474 goto bad;
475 }
476 sce->isoreqs[i].dmabuf = tbuf;
477 for(j = 0; j < UGEN_NISORFRMS; ++j)
478 sce->isoreqs[i].sizes[j] = isize;
479 usbd_setup_isoc_xfer
480 (xfer, sce->pipeh, &sce->isoreqs[i],
481 sce->isoreqs[i].sizes,
482 UGEN_NISORFRMS, USBD_NO_COPY,
483 ugen_isoc_rintr);
484 (void)usbd_transfer(xfer);
485 }
486 DPRINTFN(5, ("ugenopen: isoc open done\n"));
487 break;
488 bad:
489 while (--i >= 0) /* implicit buffer free */
490 usbd_free_xfer(sce->isoreqs[i].xfer);
491 return (ENOMEM);
492 case UE_CONTROL:
493 sce->timeout = USBD_DEFAULT_TIMEOUT;
494 return (EINVAL);
495 }
496 }
497 sc->sc_is_open[endpt] = 1;
498 return (0);
499 }
500
501 int
502 ugenclose(dev_t dev, int flag, int mode, struct lwp *l)
503 {
504 int endpt = UGENENDPOINT(dev);
505 struct ugen_softc *sc;
506 struct ugen_endpoint *sce;
507 int dir;
508 int i;
509
510 USB_GET_SC(ugen, UGENUNIT(dev), sc);
511
512 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n",
513 flag, mode, UGENUNIT(dev), endpt));
514
515 #ifdef DIAGNOSTIC
516 if (!sc->sc_is_open[endpt]) {
517 printf("ugenclose: not open\n");
518 return (EINVAL);
519 }
520 #endif
521
522 if (endpt == USB_CONTROL_ENDPOINT) {
523 DPRINTFN(5, ("ugenclose: close control\n"));
524 sc->sc_is_open[endpt] = 0;
525 return (0);
526 }
527
528 for (dir = OUT; dir <= IN; dir++) {
529 if (!(flag & (dir == OUT ? FWRITE : FREAD)))
530 continue;
531 sce = &sc->sc_endpoints[endpt][dir];
532 if (sce == NULL || sce->pipeh == NULL)
533 continue;
534 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n",
535 endpt, dir, sce));
536
537 usbd_abort_pipe(sce->pipeh);
538 usbd_close_pipe(sce->pipeh);
539 sce->pipeh = NULL;
540
541 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
542 case UE_INTERRUPT:
543 ndflush(&sce->q, sce->q.c_cc);
544 clfree(&sce->q);
545 break;
546 case UE_ISOCHRONOUS:
547 for (i = 0; i < UGEN_NISOREQS; ++i)
548 usbd_free_xfer(sce->isoreqs[i].xfer);
549 break;
550 case UE_BULK:
551 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB))
552 /* ibuf freed below */
553 usbd_free_xfer(sce->ra_wb_xfer);
554 break;
555 default:
556 break;
557 }
558
559 if (sce->ibuf != NULL) {
560 free(sce->ibuf, M_USBDEV);
561 sce->ibuf = NULL;
562 clfree(&sce->q);
563 }
564 }
565 sc->sc_is_open[endpt] = 0;
566
567 return (0);
568 }
569
570 Static int
571 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag)
572 {
573 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN];
574 u_int32_t n, tn;
575 usbd_xfer_handle xfer;
576 usbd_status err;
577 int s;
578 int error = 0;
579
580 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt));
581
582 if (sc->sc_dying)
583 return (EIO);
584
585 if (endpt == USB_CONTROL_ENDPOINT)
586 return (ENODEV);
587
588 #ifdef DIAGNOSTIC
589 if (sce->edesc == NULL) {
590 printf("ugenread: no edesc\n");
591 return (EIO);
592 }
593 if (sce->pipeh == NULL) {
594 printf("ugenread: no pipe\n");
595 return (EIO);
596 }
597 #endif
598
599 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
600 case UE_INTERRUPT:
601 /* Block until activity occurred. */
602 s = splusb();
603 while (sce->q.c_cc == 0) {
604 if (flag & IO_NDELAY) {
605 splx(s);
606 return (EWOULDBLOCK);
607 }
608 sce->state |= UGEN_ASLP;
609 DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
610 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0);
611 DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
612 if (sc->sc_dying)
613 error = EIO;
614 if (error) {
615 sce->state &= ~UGEN_ASLP;
616 break;
617 }
618 }
619 splx(s);
620
621 /* Transfer as many chunks as possible. */
622 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) {
623 n = min(sce->q.c_cc, uio->uio_resid);
624 if (n > sizeof(sc->sc_buffer))
625 n = sizeof(sc->sc_buffer);
626
627 /* Remove a small chunk from the input queue. */
628 q_to_b(&sce->q, sc->sc_buffer, n);
629 DPRINTFN(5, ("ugenread: got %d chars\n", n));
630
631 /* Copy the data to the user process. */
632 error = uiomove(sc->sc_buffer, n, uio);
633 if (error)
634 break;
635 }
636 break;
637 case UE_BULK:
638 if (sce->state & UGEN_BULK_RA) {
639 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n",
640 uio->uio_resid, sce->ra_wb_used));
641 xfer = sce->ra_wb_xfer;
642
643 s = splusb();
644 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) {
645 splx(s);
646 return (EWOULDBLOCK);
647 }
648 while (uio->uio_resid > 0 && !error) {
649 while (sce->ra_wb_used == 0) {
650 sce->state |= UGEN_ASLP;
651 DPRINTFN(5,
652 ("ugenread: sleep on %p\n",
653 sce));
654 error = tsleep(sce, PZERO | PCATCH,
655 "ugenrb", 0);
656 DPRINTFN(5,
657 ("ugenread: woke, error=%d\n",
658 error));
659 if (sc->sc_dying)
660 error = EIO;
661 if (error) {
662 sce->state &= ~UGEN_ASLP;
663 break;
664 }
665 }
666
667 /* Copy data to the process. */
668 while (uio->uio_resid > 0
669 && sce->ra_wb_used > 0) {
670 n = min(uio->uio_resid,
671 sce->ra_wb_used);
672 n = min(n, sce->limit - sce->cur);
673 error = uiomove(sce->cur, n, uio);
674 if (error)
675 break;
676 sce->cur += n;
677 sce->ra_wb_used -= n;
678 if (sce->cur == sce->limit)
679 sce->cur = sce->ibuf;
680 }
681
682 /*
683 * If the transfers stopped because the
684 * buffer was full, restart them.
685 */
686 if (sce->state & UGEN_RA_WB_STOP &&
687 sce->ra_wb_used < sce->limit - sce->ibuf) {
688 n = (sce->limit - sce->ibuf)
689 - sce->ra_wb_used;
690 usbd_setup_xfer(xfer,
691 sce->pipeh, sce, NULL,
692 min(n, sce->ra_wb_xferlen),
693 USBD_NO_COPY, USBD_NO_TIMEOUT,
694 ugen_bulkra_intr);
695 sce->state &= ~UGEN_RA_WB_STOP;
696 err = usbd_transfer(xfer);
697 if (err != USBD_IN_PROGRESS)
698 /*
699 * The transfer has not been
700 * queued. Setting STOP
701 * will make us try
702 * again at the next read.
703 */
704 sce->state |= UGEN_RA_WB_STOP;
705 }
706 }
707 splx(s);
708 break;
709 }
710 xfer = usbd_alloc_xfer(sc->sc_udev);
711 if (xfer == 0)
712 return (ENOMEM);
713 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) {
714 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n));
715 tn = n;
716 err = usbd_bulk_transfer(
717 xfer, sce->pipeh,
718 sce->state & UGEN_SHORT_OK ?
719 USBD_SHORT_XFER_OK : 0,
720 sce->timeout, sc->sc_buffer, &tn, "ugenrb");
721 if (err) {
722 if (err == USBD_INTERRUPTED)
723 error = EINTR;
724 else if (err == USBD_TIMEOUT)
725 error = ETIMEDOUT;
726 else
727 error = EIO;
728 break;
729 }
730 DPRINTFN(1, ("ugenread: got %d bytes\n", tn));
731 error = uiomove(sc->sc_buffer, tn, uio);
732 if (error || tn < n)
733 break;
734 }
735 usbd_free_xfer(xfer);
736 break;
737 case UE_ISOCHRONOUS:
738 s = splusb();
739 while (sce->cur == sce->fill) {
740 if (flag & IO_NDELAY) {
741 splx(s);
742 return (EWOULDBLOCK);
743 }
744 sce->state |= UGEN_ASLP;
745 DPRINTFN(5, ("ugenread: sleep on %p\n", sce));
746 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0);
747 DPRINTFN(5, ("ugenread: woke, error=%d\n", error));
748 if (sc->sc_dying)
749 error = EIO;
750 if (error) {
751 sce->state &= ~UGEN_ASLP;
752 break;
753 }
754 }
755
756 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) {
757 if(sce->fill > sce->cur)
758 n = min(sce->fill - sce->cur, uio->uio_resid);
759 else
760 n = min(sce->limit - sce->cur, uio->uio_resid);
761
762 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n));
763
764 /* Copy the data to the user process. */
765 error = uiomove(sce->cur, n, uio);
766 if (error)
767 break;
768 sce->cur += n;
769 if(sce->cur >= sce->limit)
770 sce->cur = sce->ibuf;
771 }
772 splx(s);
773 break;
774
775
776 default:
777 return (ENXIO);
778 }
779 return (error);
780 }
781
782 int
783 ugenread(dev_t dev, struct uio *uio, int flag)
784 {
785 int endpt = UGENENDPOINT(dev);
786 struct ugen_softc *sc;
787 int error;
788
789 USB_GET_SC(ugen, UGENUNIT(dev), sc);
790
791 sc->sc_refcnt++;
792 error = ugen_do_read(sc, endpt, uio, flag);
793 if (--sc->sc_refcnt < 0)
794 usb_detach_wakeup(USBDEV(sc->sc_dev));
795 return (error);
796 }
797
798 Static int
799 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio,
800 int flag)
801 {
802 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT];
803 u_int32_t n;
804 int error = 0;
805 int s;
806 u_int32_t tn;
807 char *dbuf;
808 usbd_xfer_handle xfer;
809 usbd_status err;
810
811 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt));
812
813 if (sc->sc_dying)
814 return (EIO);
815
816 if (endpt == USB_CONTROL_ENDPOINT)
817 return (ENODEV);
818
819 #ifdef DIAGNOSTIC
820 if (sce->edesc == NULL) {
821 printf("ugenwrite: no edesc\n");
822 return (EIO);
823 }
824 if (sce->pipeh == NULL) {
825 printf("ugenwrite: no pipe\n");
826 return (EIO);
827 }
828 #endif
829
830 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
831 case UE_BULK:
832 if (sce->state & UGEN_BULK_WB) {
833 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n",
834 uio->uio_resid, sce->ra_wb_used));
835 xfer = sce->ra_wb_xfer;
836
837 s = splusb();
838 if (sce->ra_wb_used == sce->limit - sce->ibuf &&
839 flag & IO_NDELAY) {
840 splx(s);
841 return (EWOULDBLOCK);
842 }
843 while (uio->uio_resid > 0 && !error) {
844 while (sce->ra_wb_used ==
845 sce->limit - sce->ibuf) {
846 sce->state |= UGEN_ASLP;
847 DPRINTFN(5,
848 ("ugenwrite: sleep on %p\n",
849 sce));
850 error = tsleep(sce, PZERO | PCATCH,
851 "ugenwb", 0);
852 DPRINTFN(5,
853 ("ugenwrite: woke, error=%d\n",
854 error));
855 if (sc->sc_dying)
856 error = EIO;
857 if (error) {
858 sce->state &= ~UGEN_ASLP;
859 break;
860 }
861 }
862
863 /* Copy data from the process. */
864 while (uio->uio_resid > 0 &&
865 sce->ra_wb_used < sce->limit - sce->ibuf) {
866 n = min(uio->uio_resid,
867 (sce->limit - sce->ibuf)
868 - sce->ra_wb_used);
869 n = min(n, sce->limit - sce->fill);
870 error = uiomove(sce->fill, n, uio);
871 if (error)
872 break;
873 sce->fill += n;
874 sce->ra_wb_used += n;
875 if (sce->fill == sce->limit)
876 sce->fill = sce->ibuf;
877 }
878
879 /*
880 * If the transfers stopped because the
881 * buffer was empty, restart them.
882 */
883 if (sce->state & UGEN_RA_WB_STOP &&
884 sce->ra_wb_used > 0) {
885 dbuf = (char *)usbd_get_buffer(xfer);
886 n = min(sce->ra_wb_used,
887 sce->ra_wb_xferlen);
888 tn = min(n, sce->limit - sce->cur);
889 memcpy(dbuf, sce->cur, tn);
890 dbuf += tn;
891 if (n - tn > 0)
892 memcpy(dbuf, sce->ibuf,
893 n - tn);
894 usbd_setup_xfer(xfer,
895 sce->pipeh, sce, NULL, n,
896 USBD_NO_COPY, USBD_NO_TIMEOUT,
897 ugen_bulkwb_intr);
898 sce->state &= ~UGEN_RA_WB_STOP;
899 err = usbd_transfer(xfer);
900 if (err != USBD_IN_PROGRESS)
901 /*
902 * The transfer has not been
903 * queued. Setting STOP
904 * will make us try again
905 * at the next read.
906 */
907 sce->state |= UGEN_RA_WB_STOP;
908 }
909 }
910 splx(s);
911 break;
912 }
913 xfer = usbd_alloc_xfer(sc->sc_udev);
914 if (xfer == 0)
915 return (EIO);
916 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) {
917 error = uiomove(sc->sc_buffer, n, uio);
918 if (error)
919 break;
920 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
921 err = usbd_bulk_transfer(xfer, sce->pipeh, 0,
922 sce->timeout, sc->sc_buffer, &n,"ugenwb");
923 if (err) {
924 if (err == USBD_INTERRUPTED)
925 error = EINTR;
926 else if (err == USBD_TIMEOUT)
927 error = ETIMEDOUT;
928 else
929 error = EIO;
930 break;
931 }
932 }
933 usbd_free_xfer(xfer);
934 break;
935 case UE_INTERRUPT:
936 xfer = usbd_alloc_xfer(sc->sc_udev);
937 if (xfer == 0)
938 return (EIO);
939 while ((n = min(UGETW(sce->edesc->wMaxPacketSize),
940 uio->uio_resid)) != 0) {
941 error = uiomove(sc->sc_buffer, n, uio);
942 if (error)
943 break;
944 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n));
945 err = usbd_intr_transfer(xfer, sce->pipeh, 0,
946 sce->timeout, sc->sc_buffer, &n, "ugenwi");
947 if (err) {
948 if (err == USBD_INTERRUPTED)
949 error = EINTR;
950 else if (err == USBD_TIMEOUT)
951 error = ETIMEDOUT;
952 else
953 error = EIO;
954 break;
955 }
956 }
957 usbd_free_xfer(xfer);
958 break;
959 default:
960 return (ENXIO);
961 }
962 return (error);
963 }
964
965 int
966 ugenwrite(dev_t dev, struct uio *uio, int flag)
967 {
968 int endpt = UGENENDPOINT(dev);
969 struct ugen_softc *sc;
970 int error;
971
972 USB_GET_SC(ugen, UGENUNIT(dev), sc);
973
974 sc->sc_refcnt++;
975 error = ugen_do_write(sc, endpt, uio, flag);
976 if (--sc->sc_refcnt < 0)
977 usb_detach_wakeup(USBDEV(sc->sc_dev));
978 return (error);
979 }
980
981 #if defined(__NetBSD__) || defined(__OpenBSD__)
982 int
983 ugen_activate(device_ptr_t self, enum devact act)
984 {
985 struct ugen_softc *sc = device_private(self);
986
987 switch (act) {
988 case DVACT_DEACTIVATE:
989 sc->sc_dying = 1;
990 return 0;
991 default:
992 return EOPNOTSUPP;
993 }
994 }
995 #endif
996
997 USB_DETACH(ugen)
998 {
999 USB_DETACH_START(ugen, sc);
1000 struct ugen_endpoint *sce;
1001 int i, dir;
1002 int s;
1003 #if defined(__NetBSD__) || defined(__OpenBSD__)
1004 int maj, mn;
1005
1006 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags));
1007 #elif defined(__FreeBSD__)
1008 DPRINTF(("ugen_detach: sc=%p\n", sc));
1009 #endif
1010
1011 sc->sc_dying = 1;
1012 pmf_device_deregister(self);
1013 /* Abort all pipes. Causes processes waiting for transfer to wake. */
1014 for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
1015 for (dir = OUT; dir <= IN; dir++) {
1016 sce = &sc->sc_endpoints[i][dir];
1017 if (sce && sce->pipeh)
1018 usbd_abort_pipe(sce->pipeh);
1019 }
1020 }
1021
1022 s = splusb();
1023 if (--sc->sc_refcnt >= 0) {
1024 /* Wake everyone */
1025 for (i = 0; i < USB_MAX_ENDPOINTS; i++)
1026 wakeup(&sc->sc_endpoints[i][IN]);
1027 /* Wait for processes to go away. */
1028 usb_detach_wait(USBDEV(sc->sc_dev));
1029 }
1030 splx(s);
1031
1032 #if defined(__NetBSD__) || defined(__OpenBSD__)
1033 /* locate the major number */
1034 #if defined(__NetBSD__)
1035 maj = cdevsw_lookup_major(&ugen_cdevsw);
1036 #elif defined(__OpenBSD__)
1037 for (maj = 0; maj < nchrdev; maj++)
1038 if (cdevsw[maj].d_open == ugenopen)
1039 break;
1040 #endif
1041
1042 /* Nuke the vnodes for any open instances (calls close). */
1043 mn = device_unit(self) * USB_MAX_ENDPOINTS;
1044 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR);
1045 #elif defined(__FreeBSD__)
1046 /* XXX not implemented yet */
1047 #endif
1048
1049 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev,
1050 USBDEV(sc->sc_dev));
1051
1052 for (i = 0; i < USB_MAX_ENDPOINTS; i++) {
1053 for (dir = OUT; dir <= IN; dir++) {
1054 sce = &sc->sc_endpoints[i][dir];
1055 seldestroy(&sce->rsel);
1056 }
1057 }
1058
1059 return (0);
1060 }
1061
1062 Static void
1063 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status)
1064 {
1065 struct ugen_endpoint *sce = addr;
1066 /*struct ugen_softc *sc = sce->sc;*/
1067 u_int32_t count;
1068 u_char *ibuf;
1069
1070 if (status == USBD_CANCELLED)
1071 return;
1072
1073 if (status != USBD_NORMAL_COMPLETION) {
1074 DPRINTF(("ugenintr: status=%d\n", status));
1075 if (status == USBD_STALLED)
1076 usbd_clear_endpoint_stall_async(sce->pipeh);
1077 return;
1078 }
1079
1080 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
1081 ibuf = sce->ibuf;
1082
1083 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n",
1084 xfer, status, count));
1085 DPRINTFN(5, (" data = %02x %02x %02x\n",
1086 ibuf[0], ibuf[1], ibuf[2]));
1087
1088 (void)b_to_q(ibuf, count, &sce->q);
1089
1090 if (sce->state & UGEN_ASLP) {
1091 sce->state &= ~UGEN_ASLP;
1092 DPRINTFN(5, ("ugen_intr: waking %p\n", sce));
1093 wakeup(sce);
1094 }
1095 selnotify(&sce->rsel, 0, 0);
1096 }
1097
1098 Static void
1099 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr,
1100 usbd_status status)
1101 {
1102 struct isoreq *req = addr;
1103 struct ugen_endpoint *sce = req->sce;
1104 u_int32_t count, n;
1105 int i, isize;
1106
1107 /* Return if we are aborting. */
1108 if (status == USBD_CANCELLED)
1109 return;
1110
1111 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
1112 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n",
1113 (long)(req - sce->isoreqs), count));
1114
1115 /* throw away oldest input if the buffer is full */
1116 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) {
1117 sce->cur += count;
1118 if(sce->cur >= sce->limit)
1119 sce->cur = sce->ibuf + (sce->limit - sce->cur);
1120 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n",
1121 count));
1122 }
1123
1124 isize = UGETW(sce->edesc->wMaxPacketSize);
1125 for (i = 0; i < UGEN_NISORFRMS; i++) {
1126 u_int32_t actlen = req->sizes[i];
1127 char const *tbuf = (char const *)req->dmabuf + isize * i;
1128
1129 /* copy data to buffer */
1130 while (actlen > 0) {
1131 n = min(actlen, sce->limit - sce->fill);
1132 memcpy(sce->fill, tbuf, n);
1133
1134 tbuf += n;
1135 actlen -= n;
1136 sce->fill += n;
1137 if(sce->fill == sce->limit)
1138 sce->fill = sce->ibuf;
1139 }
1140
1141 /* setup size for next transfer */
1142 req->sizes[i] = isize;
1143 }
1144
1145 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS,
1146 USBD_NO_COPY, ugen_isoc_rintr);
1147 (void)usbd_transfer(xfer);
1148
1149 if (sce->state & UGEN_ASLP) {
1150 sce->state &= ~UGEN_ASLP;
1151 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce));
1152 wakeup(sce);
1153 }
1154 selnotify(&sce->rsel, 0, 0);
1155 }
1156
1157 Static void
1158 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr,
1159 usbd_status status)
1160 {
1161 struct ugen_endpoint *sce = addr;
1162 u_int32_t count, n;
1163 char const *tbuf;
1164 usbd_status err;
1165
1166 /* Return if we are aborting. */
1167 if (status == USBD_CANCELLED)
1168 return;
1169
1170 if (status != USBD_NORMAL_COMPLETION) {
1171 DPRINTF(("ugen_bulkra_intr: status=%d\n", status));
1172 sce->state |= UGEN_RA_WB_STOP;
1173 if (status == USBD_STALLED)
1174 usbd_clear_endpoint_stall_async(sce->pipeh);
1175 return;
1176 }
1177
1178 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
1179
1180 /* Keep track of how much is in the buffer. */
1181 sce->ra_wb_used += count;
1182
1183 /* Copy data to buffer. */
1184 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer);
1185 n = min(count, sce->limit - sce->fill);
1186 memcpy(sce->fill, tbuf, n);
1187 tbuf += n;
1188 count -= n;
1189 sce->fill += n;
1190 if (sce->fill == sce->limit)
1191 sce->fill = sce->ibuf;
1192 if (count > 0) {
1193 memcpy(sce->fill, tbuf, count);
1194 sce->fill += count;
1195 }
1196
1197 /* Set up the next request if necessary. */
1198 n = (sce->limit - sce->ibuf) - sce->ra_wb_used;
1199 if (n > 0) {
1200 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL,
1201 min(n, sce->ra_wb_xferlen), USBD_NO_COPY,
1202 USBD_NO_TIMEOUT, ugen_bulkra_intr);
1203 err = usbd_transfer(xfer);
1204 if (err != USBD_IN_PROGRESS) {
1205 printf("usbd_bulkra_intr: error=%d\n", err);
1206 /*
1207 * The transfer has not been queued. Setting STOP
1208 * will make us try again at the next read.
1209 */
1210 sce->state |= UGEN_RA_WB_STOP;
1211 }
1212 }
1213 else
1214 sce->state |= UGEN_RA_WB_STOP;
1215
1216 if (sce->state & UGEN_ASLP) {
1217 sce->state &= ~UGEN_ASLP;
1218 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce));
1219 wakeup(sce);
1220 }
1221 selnotify(&sce->rsel, 0, 0);
1222 }
1223
1224 Static void
1225 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr,
1226 usbd_status status)
1227 {
1228 struct ugen_endpoint *sce = addr;
1229 u_int32_t count, n;
1230 char *tbuf;
1231 usbd_status err;
1232
1233 /* Return if we are aborting. */
1234 if (status == USBD_CANCELLED)
1235 return;
1236
1237 if (status != USBD_NORMAL_COMPLETION) {
1238 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status));
1239 sce->state |= UGEN_RA_WB_STOP;
1240 if (status == USBD_STALLED)
1241 usbd_clear_endpoint_stall_async(sce->pipeh);
1242 return;
1243 }
1244
1245 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL);
1246
1247 /* Keep track of how much is in the buffer. */
1248 sce->ra_wb_used -= count;
1249
1250 /* Update buffer pointers. */
1251 sce->cur += count;
1252 if (sce->cur >= sce->limit)
1253 sce->cur = sce->ibuf + (sce->cur - sce->limit);
1254
1255 /* Set up next request if necessary. */
1256 if (sce->ra_wb_used > 0) {
1257 /* copy data from buffer */
1258 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer);
1259 count = min(sce->ra_wb_used, sce->ra_wb_xferlen);
1260 n = min(count, sce->limit - sce->cur);
1261 memcpy(tbuf, sce->cur, n);
1262 tbuf += n;
1263 if (count - n > 0)
1264 memcpy(tbuf, sce->ibuf, count - n);
1265
1266 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL,
1267 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr);
1268 err = usbd_transfer(xfer);
1269 if (err != USBD_IN_PROGRESS) {
1270 printf("usbd_bulkwb_intr: error=%d\n", err);
1271 /*
1272 * The transfer has not been queued. Setting STOP
1273 * will make us try again at the next write.
1274 */
1275 sce->state |= UGEN_RA_WB_STOP;
1276 }
1277 }
1278 else
1279 sce->state |= UGEN_RA_WB_STOP;
1280
1281 if (sce->state & UGEN_ASLP) {
1282 sce->state &= ~UGEN_ASLP;
1283 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce));
1284 wakeup(sce);
1285 }
1286 selnotify(&sce->rsel, 0, 0);
1287 }
1288
1289 Static usbd_status
1290 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno)
1291 {
1292 usbd_interface_handle iface;
1293 usb_endpoint_descriptor_t *ed;
1294 usbd_status err;
1295 struct ugen_endpoint *sce;
1296 u_int8_t niface, nendpt, endptno, endpt;
1297 int dir;
1298
1299 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno));
1300
1301 err = usbd_interface_count(sc->sc_udev, &niface);
1302 if (err)
1303 return (err);
1304 if (ifaceidx < 0 || ifaceidx >= niface)
1305 return (USBD_INVAL);
1306
1307 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1308 if (err)
1309 return (err);
1310 err = usbd_endpoint_count(iface, &nendpt);
1311 if (err)
1312 return (err);
1313 /* XXX should only do this after setting new altno has succeeded */
1314 for (endptno = 0; endptno < nendpt; endptno++) {
1315 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1316 endpt = ed->bEndpointAddress;
1317 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1318 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1319 sce->sc = 0;
1320 sce->edesc = 0;
1321 sce->iface = 0;
1322 }
1323
1324 /* change setting */
1325 err = usbd_set_interface(iface, altno);
1326 if (err)
1327 return (err);
1328
1329 err = usbd_endpoint_count(iface, &nendpt);
1330 if (err)
1331 return (err);
1332 for (endptno = 0; endptno < nendpt; endptno++) {
1333 ed = usbd_interface2endpoint_descriptor(iface,endptno);
1334 KASSERT(ed != NULL);
1335 endpt = ed->bEndpointAddress;
1336 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT;
1337 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir];
1338 sce->sc = sc;
1339 sce->edesc = ed;
1340 sce->iface = iface;
1341 }
1342 return (0);
1343 }
1344
1345 /* Retrieve a complete descriptor for a certain device and index. */
1346 Static usb_config_descriptor_t *
1347 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp)
1348 {
1349 usb_config_descriptor_t *cdesc, *tdesc, cdescr;
1350 int len;
1351 usbd_status err;
1352
1353 if (index == USB_CURRENT_CONFIG_INDEX) {
1354 tdesc = usbd_get_config_descriptor(sc->sc_udev);
1355 len = UGETW(tdesc->wTotalLength);
1356 if (lenp)
1357 *lenp = len;
1358 cdesc = malloc(len, M_TEMP, M_WAITOK);
1359 memcpy(cdesc, tdesc, len);
1360 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len));
1361 } else {
1362 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr);
1363 if (err)
1364 return (0);
1365 len = UGETW(cdescr.wTotalLength);
1366 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len));
1367 if (lenp)
1368 *lenp = len;
1369 cdesc = malloc(len, M_TEMP, M_WAITOK);
1370 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len);
1371 if (err) {
1372 free(cdesc, M_TEMP);
1373 return (0);
1374 }
1375 }
1376 return (cdesc);
1377 }
1378
1379 Static int
1380 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx)
1381 {
1382 usbd_interface_handle iface;
1383 usbd_status err;
1384
1385 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface);
1386 if (err)
1387 return (-1);
1388 return (usbd_get_interface_altindex(iface));
1389 }
1390
1391 Static int
1392 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd,
1393 void *addr, int flag, struct lwp *l)
1394 {
1395 struct ugen_endpoint *sce;
1396 usbd_status err;
1397 usbd_interface_handle iface;
1398 struct usb_config_desc *cd;
1399 usb_config_descriptor_t *cdesc;
1400 struct usb_interface_desc *id;
1401 usb_interface_descriptor_t *idesc;
1402 struct usb_endpoint_desc *ed;
1403 usb_endpoint_descriptor_t *edesc;
1404 struct usb_alt_interface *ai;
1405 struct usb_string_desc *si;
1406 u_int8_t conf, alt;
1407
1408 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd));
1409 if (sc->sc_dying)
1410 return (EIO);
1411
1412 switch (cmd) {
1413 case FIONBIO:
1414 /* All handled in the upper FS layer. */
1415 return (0);
1416 case USB_SET_SHORT_XFER:
1417 if (endpt == USB_CONTROL_ENDPOINT)
1418 return (EINVAL);
1419 /* This flag only affects read */
1420 sce = &sc->sc_endpoints[endpt][IN];
1421 if (sce == NULL || sce->pipeh == NULL)
1422 return (EINVAL);
1423 if (*(int *)addr)
1424 sce->state |= UGEN_SHORT_OK;
1425 else
1426 sce->state &= ~UGEN_SHORT_OK;
1427 return (0);
1428 case USB_SET_TIMEOUT:
1429 sce = &sc->sc_endpoints[endpt][IN];
1430 if (sce == NULL
1431 /* XXX this shouldn't happen, but the distinction between
1432 input and output pipes isn't clear enough.
1433 || sce->pipeh == NULL */
1434 )
1435 return (EINVAL);
1436 sce->timeout = *(int *)addr;
1437 return (0);
1438 case USB_SET_BULK_RA:
1439 if (endpt == USB_CONTROL_ENDPOINT)
1440 return (EINVAL);
1441 sce = &sc->sc_endpoints[endpt][IN];
1442 if (sce == NULL || sce->pipeh == NULL)
1443 return (EINVAL);
1444 edesc = sce->edesc;
1445 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK)
1446 return (EINVAL);
1447
1448 if (*(int *)addr) {
1449 /* Only turn RA on if it's currently off. */
1450 if (sce->state & UGEN_BULK_RA)
1451 return (0);
1452
1453 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0)
1454 /* shouldn't happen */
1455 return (EINVAL);
1456 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev);
1457 if (sce->ra_wb_xfer == NULL)
1458 return (ENOMEM);
1459 sce->ra_wb_xferlen = sce->ra_wb_reqsize;
1460 /*
1461 * Set up a dmabuf because we reuse the xfer with
1462 * the same (max) request length like isoc.
1463 */
1464 if (usbd_alloc_buffer(sce->ra_wb_xfer,
1465 sce->ra_wb_xferlen) == 0) {
1466 usbd_free_xfer(sce->ra_wb_xfer);
1467 return (ENOMEM);
1468 }
1469 sce->ibuf = malloc(sce->ra_wb_bufsize,
1470 M_USBDEV, M_WAITOK);
1471 sce->fill = sce->cur = sce->ibuf;
1472 sce->limit = sce->ibuf + sce->ra_wb_bufsize;
1473 sce->ra_wb_used = 0;
1474 sce->state |= UGEN_BULK_RA;
1475 sce->state &= ~UGEN_RA_WB_STOP;
1476 /* Now start reading. */
1477 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce,
1478 NULL,
1479 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize),
1480 USBD_NO_COPY, USBD_NO_TIMEOUT,
1481 ugen_bulkra_intr);
1482 err = usbd_transfer(sce->ra_wb_xfer);
1483 if (err != USBD_IN_PROGRESS) {
1484 sce->state &= ~UGEN_BULK_RA;
1485 free(sce->ibuf, M_USBDEV);
1486 sce->ibuf = NULL;
1487 usbd_free_xfer(sce->ra_wb_xfer);
1488 return (EIO);
1489 }
1490 } else {
1491 /* Only turn RA off if it's currently on. */
1492 if (!(sce->state & UGEN_BULK_RA))
1493 return (0);
1494
1495 sce->state &= ~UGEN_BULK_RA;
1496 usbd_abort_pipe(sce->pipeh);
1497 usbd_free_xfer(sce->ra_wb_xfer);
1498 /*
1499 * XXX Discard whatever's in the buffer, but we
1500 * should keep it around and drain the buffer
1501 * instead.
1502 */
1503 free(sce->ibuf, M_USBDEV);
1504 sce->ibuf = NULL;
1505 }
1506 return (0);
1507 case USB_SET_BULK_WB:
1508 if (endpt == USB_CONTROL_ENDPOINT)
1509 return (EINVAL);
1510 sce = &sc->sc_endpoints[endpt][OUT];
1511 if (sce == NULL || sce->pipeh == NULL)
1512 return (EINVAL);
1513 edesc = sce->edesc;
1514 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK)
1515 return (EINVAL);
1516
1517 if (*(int *)addr) {
1518 /* Only turn WB on if it's currently off. */
1519 if (sce->state & UGEN_BULK_WB)
1520 return (0);
1521
1522 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0)
1523 /* shouldn't happen */
1524 return (EINVAL);
1525 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev);
1526 if (sce->ra_wb_xfer == NULL)
1527 return (ENOMEM);
1528 sce->ra_wb_xferlen = sce->ra_wb_reqsize;
1529 /*
1530 * Set up a dmabuf because we reuse the xfer with
1531 * the same (max) request length like isoc.
1532 */
1533 if (usbd_alloc_buffer(sce->ra_wb_xfer,
1534 sce->ra_wb_xferlen) == 0) {
1535 usbd_free_xfer(sce->ra_wb_xfer);
1536 return (ENOMEM);
1537 }
1538 sce->ibuf = malloc(sce->ra_wb_bufsize,
1539 M_USBDEV, M_WAITOK);
1540 sce->fill = sce->cur = sce->ibuf;
1541 sce->limit = sce->ibuf + sce->ra_wb_bufsize;
1542 sce->ra_wb_used = 0;
1543 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP;
1544 } else {
1545 /* Only turn WB off if it's currently on. */
1546 if (!(sce->state & UGEN_BULK_WB))
1547 return (0);
1548
1549 sce->state &= ~UGEN_BULK_WB;
1550 /*
1551 * XXX Discard whatever's in the buffer, but we
1552 * should keep it around and keep writing to
1553 * drain the buffer instead.
1554 */
1555 usbd_abort_pipe(sce->pipeh);
1556 usbd_free_xfer(sce->ra_wb_xfer);
1557 free(sce->ibuf, M_USBDEV);
1558 sce->ibuf = NULL;
1559 }
1560 return (0);
1561 case USB_SET_BULK_RA_OPT:
1562 case USB_SET_BULK_WB_OPT:
1563 {
1564 struct usb_bulk_ra_wb_opt *opt;
1565
1566 if (endpt == USB_CONTROL_ENDPOINT)
1567 return (EINVAL);
1568 opt = (struct usb_bulk_ra_wb_opt *)addr;
1569 if (cmd == USB_SET_BULK_RA_OPT)
1570 sce = &sc->sc_endpoints[endpt][IN];
1571 else
1572 sce = &sc->sc_endpoints[endpt][OUT];
1573 if (sce == NULL || sce->pipeh == NULL)
1574 return (EINVAL);
1575 if (opt->ra_wb_buffer_size < 1 ||
1576 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX ||
1577 opt->ra_wb_request_size < 1 ||
1578 opt->ra_wb_request_size > opt->ra_wb_buffer_size)
1579 return (EINVAL);
1580 /*
1581 * XXX These changes do not take effect until the
1582 * next time RA/WB mode is enabled but they ought to
1583 * take effect immediately.
1584 */
1585 sce->ra_wb_bufsize = opt->ra_wb_buffer_size;
1586 sce->ra_wb_reqsize = opt->ra_wb_request_size;
1587 return (0);
1588 }
1589 default:
1590 break;
1591 }
1592
1593 if (endpt != USB_CONTROL_ENDPOINT)
1594 return (EINVAL);
1595
1596 switch (cmd) {
1597 #ifdef UGEN_DEBUG
1598 case USB_SETDEBUG:
1599 ugendebug = *(int *)addr;
1600 break;
1601 #endif
1602 case USB_GET_CONFIG:
1603 err = usbd_get_config(sc->sc_udev, &conf);
1604 if (err)
1605 return (EIO);
1606 *(int *)addr = conf;
1607 break;
1608 case USB_SET_CONFIG:
1609 if (!(flag & FWRITE))
1610 return (EPERM);
1611 err = ugen_set_config(sc, *(int *)addr);
1612 switch (err) {
1613 case USBD_NORMAL_COMPLETION:
1614 break;
1615 case USBD_IN_USE:
1616 return (EBUSY);
1617 default:
1618 return (EIO);
1619 }
1620 break;
1621 case USB_GET_ALTINTERFACE:
1622 ai = (struct usb_alt_interface *)addr;
1623 err = usbd_device2interface_handle(sc->sc_udev,
1624 ai->uai_interface_index, &iface);
1625 if (err)
1626 return (EINVAL);
1627 idesc = usbd_get_interface_descriptor(iface);
1628 if (idesc == NULL)
1629 return (EIO);
1630 ai->uai_alt_no = idesc->bAlternateSetting;
1631 break;
1632 case USB_SET_ALTINTERFACE:
1633 if (!(flag & FWRITE))
1634 return (EPERM);
1635 ai = (struct usb_alt_interface *)addr;
1636 err = usbd_device2interface_handle(sc->sc_udev,
1637 ai->uai_interface_index, &iface);
1638 if (err)
1639 return (EINVAL);
1640 err = ugen_set_interface(sc, ai->uai_interface_index,
1641 ai->uai_alt_no);
1642 if (err)
1643 return (EINVAL);
1644 break;
1645 case USB_GET_NO_ALT:
1646 ai = (struct usb_alt_interface *)addr;
1647 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0);
1648 if (cdesc == NULL)
1649 return (EINVAL);
1650 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0);
1651 if (idesc == NULL) {
1652 free(cdesc, M_TEMP);
1653 return (EINVAL);
1654 }
1655 ai->uai_alt_no = usbd_get_no_alts(cdesc,
1656 idesc->bInterfaceNumber);
1657 free(cdesc, M_TEMP);
1658 break;
1659 case USB_GET_DEVICE_DESC:
1660 *(usb_device_descriptor_t *)addr =
1661 *usbd_get_device_descriptor(sc->sc_udev);
1662 break;
1663 case USB_GET_CONFIG_DESC:
1664 cd = (struct usb_config_desc *)addr;
1665 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0);
1666 if (cdesc == NULL)
1667 return (EINVAL);
1668 cd->ucd_desc = *cdesc;
1669 free(cdesc, M_TEMP);
1670 break;
1671 case USB_GET_INTERFACE_DESC:
1672 id = (struct usb_interface_desc *)addr;
1673 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0);
1674 if (cdesc == NULL)
1675 return (EINVAL);
1676 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX &&
1677 id->uid_alt_index == USB_CURRENT_ALT_INDEX)
1678 alt = ugen_get_alt_index(sc, id->uid_interface_index);
1679 else
1680 alt = id->uid_alt_index;
1681 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt);
1682 if (idesc == NULL) {
1683 free(cdesc, M_TEMP);
1684 return (EINVAL);
1685 }
1686 id->uid_desc = *idesc;
1687 free(cdesc, M_TEMP);
1688 break;
1689 case USB_GET_ENDPOINT_DESC:
1690 ed = (struct usb_endpoint_desc *)addr;
1691 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0);
1692 if (cdesc == NULL)
1693 return (EINVAL);
1694 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX &&
1695 ed->ued_alt_index == USB_CURRENT_ALT_INDEX)
1696 alt = ugen_get_alt_index(sc, ed->ued_interface_index);
1697 else
1698 alt = ed->ued_alt_index;
1699 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index,
1700 alt, ed->ued_endpoint_index);
1701 if (edesc == NULL) {
1702 free(cdesc, M_TEMP);
1703 return (EINVAL);
1704 }
1705 ed->ued_desc = *edesc;
1706 free(cdesc, M_TEMP);
1707 break;
1708 case USB_GET_FULL_DESC:
1709 {
1710 int len;
1711 struct iovec iov;
1712 struct uio uio;
1713 struct usb_full_desc *fd = (struct usb_full_desc *)addr;
1714 int error;
1715
1716 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len);
1717 if (cdesc == NULL)
1718 return (EINVAL);
1719 if (len > fd->ufd_size)
1720 len = fd->ufd_size;
1721 iov.iov_base = (void *)fd->ufd_data;
1722 iov.iov_len = len;
1723 uio.uio_iov = &iov;
1724 uio.uio_iovcnt = 1;
1725 uio.uio_resid = len;
1726 uio.uio_offset = 0;
1727 uio.uio_rw = UIO_READ;
1728 uio.uio_vmspace = l->l_proc->p_vmspace;
1729 error = uiomove((void *)cdesc, len, &uio);
1730 free(cdesc, M_TEMP);
1731 return (error);
1732 }
1733 case USB_GET_STRING_DESC: {
1734 int len;
1735 si = (struct usb_string_desc *)addr;
1736 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index,
1737 si->usd_language_id, &si->usd_desc, &len);
1738 if (err)
1739 return (EINVAL);
1740 break;
1741 }
1742 case USB_DO_REQUEST:
1743 {
1744 struct usb_ctl_request *ur = (void *)addr;
1745 int len = UGETW(ur->ucr_request.wLength);
1746 struct iovec iov;
1747 struct uio uio;
1748 void *ptr = 0;
1749 usbd_status xerr;
1750 int error = 0;
1751
1752 if (!(flag & FWRITE))
1753 return (EPERM);
1754 /* Avoid requests that would damage the bus integrity. */
1755 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1756 ur->ucr_request.bRequest == UR_SET_ADDRESS) ||
1757 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE &&
1758 ur->ucr_request.bRequest == UR_SET_CONFIG) ||
1759 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE &&
1760 ur->ucr_request.bRequest == UR_SET_INTERFACE))
1761 return (EINVAL);
1762
1763 if (len < 0 || len > 32767)
1764 return (EINVAL);
1765 if (len != 0) {
1766 iov.iov_base = (void *)ur->ucr_data;
1767 iov.iov_len = len;
1768 uio.uio_iov = &iov;
1769 uio.uio_iovcnt = 1;
1770 uio.uio_resid = len;
1771 uio.uio_offset = 0;
1772 uio.uio_rw =
1773 ur->ucr_request.bmRequestType & UT_READ ?
1774 UIO_READ : UIO_WRITE;
1775 uio.uio_vmspace = l->l_proc->p_vmspace;
1776 ptr = malloc(len, M_TEMP, M_WAITOK);
1777 if (uio.uio_rw == UIO_WRITE) {
1778 error = uiomove(ptr, len, &uio);
1779 if (error)
1780 goto ret;
1781 }
1782 }
1783 sce = &sc->sc_endpoints[endpt][IN];
1784 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request,
1785 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout);
1786 if (xerr) {
1787 error = EIO;
1788 goto ret;
1789 }
1790 if (len != 0) {
1791 if (uio.uio_rw == UIO_READ) {
1792 error = uiomove(ptr, len, &uio);
1793 if (error)
1794 goto ret;
1795 }
1796 }
1797 ret:
1798 if (ptr)
1799 free(ptr, M_TEMP);
1800 return (error);
1801 }
1802 case USB_GET_DEVICEINFO:
1803 usbd_fill_deviceinfo(sc->sc_udev,
1804 (struct usb_device_info *)addr, 0);
1805 break;
1806 #ifdef COMPAT_30
1807 case USB_GET_DEVICEINFO_OLD:
1808 usbd_fill_deviceinfo_old(sc->sc_udev,
1809 (struct usb_device_info_old *)addr, 0);
1810
1811 break;
1812 #endif
1813 default:
1814 return (EINVAL);
1815 }
1816 return (0);
1817 }
1818
1819 int
1820 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l)
1821 {
1822 int endpt = UGENENDPOINT(dev);
1823 struct ugen_softc *sc;
1824 int error;
1825
1826 USB_GET_SC(ugen, UGENUNIT(dev), sc);
1827
1828 sc->sc_refcnt++;
1829 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l);
1830 if (--sc->sc_refcnt < 0)
1831 usb_detach_wakeup(USBDEV(sc->sc_dev));
1832 return (error);
1833 }
1834
1835 int
1836 ugenpoll(dev_t dev, int events, struct lwp *l)
1837 {
1838 struct ugen_softc *sc;
1839 struct ugen_endpoint *sce_in, *sce_out;
1840 int revents = 0;
1841 int s;
1842
1843 USB_GET_SC(ugen, UGENUNIT(dev), sc);
1844
1845 if (sc->sc_dying)
1846 return (POLLHUP);
1847
1848 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
1849 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT];
1850 if (sce_in == NULL && sce_out == NULL)
1851 return (POLLERR);
1852 #ifdef DIAGNOSTIC
1853 if (!sce_in->edesc && !sce_out->edesc) {
1854 printf("ugenpoll: no edesc\n");
1855 return (POLLERR);
1856 }
1857 /* It's possible to have only one pipe open. */
1858 if (!sce_in->pipeh && !sce_out->pipeh) {
1859 printf("ugenpoll: no pipe\n");
1860 return (POLLERR);
1861 }
1862 #endif
1863 s = splusb();
1864 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM)))
1865 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) {
1866 case UE_INTERRUPT:
1867 if (sce_in->q.c_cc > 0)
1868 revents |= events & (POLLIN | POLLRDNORM);
1869 else
1870 selrecord(l, &sce_in->rsel);
1871 break;
1872 case UE_ISOCHRONOUS:
1873 if (sce_in->cur != sce_in->fill)
1874 revents |= events & (POLLIN | POLLRDNORM);
1875 else
1876 selrecord(l, &sce_in->rsel);
1877 break;
1878 case UE_BULK:
1879 if (sce_in->state & UGEN_BULK_RA) {
1880 if (sce_in->ra_wb_used > 0)
1881 revents |= events &
1882 (POLLIN | POLLRDNORM);
1883 else
1884 selrecord(l, &sce_in->rsel);
1885 break;
1886 }
1887 /*
1888 * We have no easy way of determining if a read will
1889 * yield any data or a write will happen.
1890 * Pretend they will.
1891 */
1892 revents |= events & (POLLIN | POLLRDNORM);
1893 break;
1894 default:
1895 break;
1896 }
1897 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM)))
1898 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) {
1899 case UE_INTERRUPT:
1900 case UE_ISOCHRONOUS:
1901 /* XXX unimplemented */
1902 break;
1903 case UE_BULK:
1904 if (sce_out->state & UGEN_BULK_WB) {
1905 if (sce_out->ra_wb_used <
1906 sce_out->limit - sce_out->ibuf)
1907 revents |= events &
1908 (POLLOUT | POLLWRNORM);
1909 else
1910 selrecord(l, &sce_out->rsel);
1911 break;
1912 }
1913 /*
1914 * We have no easy way of determining if a read will
1915 * yield any data or a write will happen.
1916 * Pretend they will.
1917 */
1918 revents |= events & (POLLOUT | POLLWRNORM);
1919 break;
1920 default:
1921 break;
1922 }
1923
1924
1925 splx(s);
1926 return (revents);
1927 }
1928
1929 static void
1930 filt_ugenrdetach(struct knote *kn)
1931 {
1932 struct ugen_endpoint *sce = kn->kn_hook;
1933 int s;
1934
1935 s = splusb();
1936 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext);
1937 splx(s);
1938 }
1939
1940 static int
1941 filt_ugenread_intr(struct knote *kn, long hint)
1942 {
1943 struct ugen_endpoint *sce = kn->kn_hook;
1944
1945 kn->kn_data = sce->q.c_cc;
1946 return (kn->kn_data > 0);
1947 }
1948
1949 static int
1950 filt_ugenread_isoc(struct knote *kn, long hint)
1951 {
1952 struct ugen_endpoint *sce = kn->kn_hook;
1953
1954 if (sce->cur == sce->fill)
1955 return (0);
1956
1957 if (sce->cur < sce->fill)
1958 kn->kn_data = sce->fill - sce->cur;
1959 else
1960 kn->kn_data = (sce->limit - sce->cur) +
1961 (sce->fill - sce->ibuf);
1962
1963 return (1);
1964 }
1965
1966 static int
1967 filt_ugenread_bulk(struct knote *kn, long hint)
1968 {
1969 struct ugen_endpoint *sce = kn->kn_hook;
1970
1971 if (!(sce->state & UGEN_BULK_RA))
1972 /*
1973 * We have no easy way of determining if a read will
1974 * yield any data or a write will happen.
1975 * So, emulate "seltrue".
1976 */
1977 return (filt_seltrue(kn, hint));
1978
1979 if (sce->ra_wb_used == 0)
1980 return (0);
1981
1982 kn->kn_data = sce->ra_wb_used;
1983
1984 return (1);
1985 }
1986
1987 static int
1988 filt_ugenwrite_bulk(struct knote *kn, long hint)
1989 {
1990 struct ugen_endpoint *sce = kn->kn_hook;
1991
1992 if (!(sce->state & UGEN_BULK_WB))
1993 /*
1994 * We have no easy way of determining if a read will
1995 * yield any data or a write will happen.
1996 * So, emulate "seltrue".
1997 */
1998 return (filt_seltrue(kn, hint));
1999
2000 if (sce->ra_wb_used == sce->limit - sce->ibuf)
2001 return (0);
2002
2003 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used;
2004
2005 return (1);
2006 }
2007
2008 static const struct filterops ugenread_intr_filtops =
2009 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr };
2010
2011 static const struct filterops ugenread_isoc_filtops =
2012 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc };
2013
2014 static const struct filterops ugenread_bulk_filtops =
2015 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk };
2016
2017 static const struct filterops ugenwrite_bulk_filtops =
2018 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk };
2019
2020 int
2021 ugenkqfilter(dev_t dev, struct knote *kn)
2022 {
2023 struct ugen_softc *sc;
2024 struct ugen_endpoint *sce;
2025 struct klist *klist;
2026 int s;
2027
2028 USB_GET_SC(ugen, UGENUNIT(dev), sc);
2029
2030 if (sc->sc_dying)
2031 return (ENXIO);
2032
2033 switch (kn->kn_filter) {
2034 case EVFILT_READ:
2035 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN];
2036 if (sce == NULL)
2037 return (EINVAL);
2038
2039 klist = &sce->rsel.sel_klist;
2040 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
2041 case UE_INTERRUPT:
2042 kn->kn_fop = &ugenread_intr_filtops;
2043 break;
2044 case UE_ISOCHRONOUS:
2045 kn->kn_fop = &ugenread_isoc_filtops;
2046 break;
2047 case UE_BULK:
2048 kn->kn_fop = &ugenread_bulk_filtops;
2049 break;
2050 break;
2051 default:
2052 return (EINVAL);
2053 }
2054 break;
2055
2056 case EVFILT_WRITE:
2057 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT];
2058 if (sce == NULL)
2059 return (EINVAL);
2060
2061 klist = &sce->rsel.sel_klist;
2062 switch (sce->edesc->bmAttributes & UE_XFERTYPE) {
2063 case UE_INTERRUPT:
2064 case UE_ISOCHRONOUS:
2065 /* XXX poll doesn't support this */
2066 return (EINVAL);
2067
2068 case UE_BULK:
2069 kn->kn_fop = &ugenwrite_bulk_filtops;
2070 break;
2071 default:
2072 return (EINVAL);
2073 }
2074 break;
2075
2076 default:
2077 return (EINVAL);
2078 }
2079
2080 kn->kn_hook = sce;
2081
2082 s = splusb();
2083 SLIST_INSERT_HEAD(klist, kn, kn_selnext);
2084 splx(s);
2085
2086 return (0);
2087 }
2088
2089 #if defined(__FreeBSD__)
2090 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0);
2091 #endif
NetBSD on the FriendlyARM MINI2440