ugen.c revision 1.45.6.2
1 /* $NetBSD: ugen.c,v 1.45.6.2 2001/09/26 15:28:19 fvdl Exp $ */ 2 /* $FreeBSD: src/sys/dev/usb/ugen.c,v 1.26 1999/11/17 22:33:41 n_hibma Exp $ */ 3 4 /* 5 * Copyright (c) 1998 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Lennart Augustsson (lennart (at) augustsson.net) at 10 * Carlstedt Research & Technology. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 #include <sys/kernel.h> 45 #include <sys/malloc.h> 46 #if defined(__NetBSD__) || defined(__OpenBSD__) 47 #include <sys/device.h> 48 #include <sys/ioctl.h> 49 #elif defined(__FreeBSD__) 50 #include <sys/module.h> 51 #include <sys/bus.h> 52 #include <sys/ioccom.h> 53 #include <sys/conf.h> 54 #include <sys/fcntl.h> 55 #include <sys/filio.h> 56 #endif 57 #include <sys/conf.h> 58 #include <sys/tty.h> 59 #include <sys/file.h> 60 #include <sys/select.h> 61 #include <sys/proc.h> 62 #include <sys/vnode.h> 63 #include <sys/poll.h> 64 65 #include <miscfs/specfs/specdev.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 struct ugen_endpoint { 89 struct ugen_softc *sc; 90 usb_endpoint_descriptor_t *edesc; 91 usbd_interface_handle iface; 92 int state; 93 #define UGEN_ASLP 0x02 /* waiting for data */ 94 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 95 usbd_pipe_handle pipeh; 96 struct clist q; 97 struct selinfo rsel; 98 u_char *ibuf; /* start of buffer (circular for isoc) */ 99 u_char *fill; /* location for input (isoc) */ 100 u_char *limit; /* end of circular buffer (isoc) */ 101 u_char *cur; /* current read location (isoc) */ 102 u_int32_t timeout; 103 struct isoreq { 104 struct ugen_endpoint *sce; 105 usbd_xfer_handle xfer; 106 void *dmabuf; 107 u_int16_t sizes[UGEN_NISORFRMS]; 108 } isoreqs[UGEN_NISOREQS]; 109 }; 110 111 struct ugen_softc { 112 USBBASEDEVICE sc_dev; /* base device */ 113 usbd_device_handle sc_udev; 114 115 char sc_is_open[USB_MAX_ENDPOINTS]; 116 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 117 #define OUT 0 118 #define IN 1 119 120 int sc_refcnt; 121 u_char sc_dying; 122 }; 123 124 #if defined(__NetBSD__) || defined(__OpenBSD__) 125 cdev_decl(ugen); 126 #elif defined(__FreeBSD__) 127 d_open_t ugenopen; 128 d_close_t ugenclose; 129 d_read_t ugenread; 130 d_write_t ugenwrite; 131 d_ioctl_t ugenioctl; 132 d_poll_t ugenpoll; 133 134 #define UGEN_CDEV_MAJOR 114 135 136 Static struct cdevsw ugen_cdevsw = { 137 /* open */ ugenopen, 138 /* close */ ugenclose, 139 /* read */ ugenread, 140 /* write */ ugenwrite, 141 /* ioctl */ ugenioctl, 142 /* poll */ ugenpoll, 143 /* mmap */ nommap, 144 /* strategy */ nostrategy, 145 /* name */ "ugen", 146 /* maj */ UGEN_CDEV_MAJOR, 147 /* dump */ nodump, 148 /* psize */ nopsize, 149 /* flags */ 0, 150 /* bmaj */ -1 151 }; 152 #endif 153 154 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 155 usbd_status status); 156 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 157 usbd_status status); 158 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 159 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 160 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 161 caddr_t, int, struct proc *); 162 Static int ugen_set_config(struct ugen_softc *sc, int configno); 163 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 164 int index, int *lenp); 165 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 166 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 167 168 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 169 #define UGENENDPOINT(n) (minor(n) & 0xf) 170 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 171 172 USB_DECLARE_DRIVER(ugen); 173 174 USB_MATCH(ugen) 175 { 176 USB_MATCH_START(ugen, uaa); 177 178 if (uaa->usegeneric) 179 return (UMATCH_GENERIC); 180 else 181 return (UMATCH_NONE); 182 } 183 184 USB_ATTACH(ugen) 185 { 186 USB_ATTACH_START(ugen, sc, uaa); 187 usbd_device_handle udev; 188 char devinfo[1024]; 189 usbd_status err; 190 int conf; 191 192 usbd_devinfo(uaa->device, 0, devinfo); 193 USB_ATTACH_SETUP; 194 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); 195 196 sc->sc_udev = udev = uaa->device; 197 198 /* First set configuration index 0, the default one for ugen. */ 199 err = usbd_set_config_index(udev, 0, 0); 200 if (err) { 201 printf("%s: setting configuration index 0 failed\n", 202 USBDEVNAME(sc->sc_dev)); 203 sc->sc_dying = 1; 204 USB_ATTACH_ERROR_RETURN; 205 } 206 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 207 208 /* Set up all the local state for this configuration. */ 209 err = ugen_set_config(sc, conf); 210 if (err) { 211 printf("%s: setting configuration %d failed\n", 212 USBDEVNAME(sc->sc_dev), conf); 213 sc->sc_dying = 1; 214 USB_ATTACH_ERROR_RETURN; 215 } 216 217 #ifdef __FreeBSD__ 218 { 219 static int global_init_done = 0; 220 if (!global_init_done) { 221 cdevsw_add(&ugen_cdevsw); 222 global_init_done = 1; 223 } 224 } 225 #endif 226 227 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 228 USBDEV(sc->sc_dev)); 229 230 USB_ATTACH_SUCCESS_RETURN; 231 } 232 233 Static int 234 ugen_set_config(struct ugen_softc *sc, int configno) 235 { 236 usbd_device_handle dev = sc->sc_udev; 237 usbd_interface_handle iface; 238 usb_endpoint_descriptor_t *ed; 239 struct ugen_endpoint *sce; 240 u_int8_t niface, nendpt; 241 int ifaceno, endptno, endpt; 242 usbd_status err; 243 int dir; 244 245 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 246 USBDEVNAME(sc->sc_dev), configno, sc)); 247 /* Avoid setting the current value. */ 248 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 249 err = usbd_set_config_no(dev, configno, 1); 250 if (err) 251 return (err); 252 } 253 254 err = usbd_interface_count(dev, &niface); 255 if (err) 256 return (err); 257 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 258 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 259 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 260 err = usbd_device2interface_handle(dev, ifaceno, &iface); 261 if (err) 262 return (err); 263 err = usbd_endpoint_count(iface, &nendpt); 264 if (err) 265 return (err); 266 for (endptno = 0; endptno < nendpt; endptno++) { 267 ed = usbd_interface2endpoint_descriptor(iface,endptno); 268 endpt = ed->bEndpointAddress; 269 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 270 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 271 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 272 "(%d,%d), sce=%p\n", 273 endptno, endpt, UE_GET_ADDR(endpt), 274 UE_GET_DIR(endpt), sce)); 275 sce->sc = sc; 276 sce->edesc = ed; 277 sce->iface = iface; 278 } 279 } 280 return (USBD_NORMAL_COMPLETION); 281 } 282 283 int 284 ugenopen(struct vnode *devvp, int flag, int mode, struct proc *p) 285 { 286 struct ugen_softc *sc; 287 int unit; 288 int endpt; 289 usb_endpoint_descriptor_t *edesc; 290 struct ugen_endpoint *sce; 291 int dir, isize; 292 usbd_status err; 293 usbd_xfer_handle xfer; 294 void *buf; 295 int i, j; 296 dev_t rdev; 297 298 rdev = vdev_rdev(devvp); 299 sc = vdev_privdata(devvp); 300 301 unit = UGENUNIT(rdev); 302 endpt = UGENENDPOINT(rdev); 303 304 USB_GET_SC_OPEN(ugen, unit, sc); 305 306 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 307 flag, mode, unit, endpt)); 308 309 if (sc == NULL || sc->sc_dying) 310 return (ENXIO); 311 312 if (sc->sc_is_open[endpt]) 313 return (EBUSY); 314 315 vdev_setprivdata(devvp, sc); 316 317 if (endpt == USB_CONTROL_ENDPOINT) { 318 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 319 return (0); 320 } 321 322 /* Make sure there are pipes for all directions. */ 323 for (dir = OUT; dir <= IN; dir++) { 324 if (flag & (dir == OUT ? FWRITE : FREAD)) { 325 sce = &sc->sc_endpoints[endpt][dir]; 326 if (sce == 0 || sce->edesc == 0) 327 return (ENXIO); 328 } 329 } 330 331 /* Actually open the pipes. */ 332 /* XXX Should back out properly if it fails. */ 333 for (dir = OUT; dir <= IN; dir++) { 334 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 335 continue; 336 sce = &sc->sc_endpoints[endpt][dir]; 337 sce->state = 0; 338 sce->timeout = USBD_NO_TIMEOUT; 339 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 340 sc, endpt, dir, sce)); 341 edesc = sce->edesc; 342 switch (edesc->bmAttributes & UE_XFERTYPE) { 343 case UE_INTERRUPT: 344 isize = UGETW(edesc->wMaxPacketSize); 345 if (isize == 0) /* shouldn't happen */ 346 return (EINVAL); 347 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 348 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 349 endpt, isize)); 350 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 351 return (ENOMEM); 352 err = usbd_open_pipe_intr(sce->iface, 353 edesc->bEndpointAddress, 354 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 355 sce->ibuf, isize, ugenintr, 356 USBD_DEFAULT_INTERVAL); 357 if (err) { 358 free(sce->ibuf, M_USBDEV); 359 clfree(&sce->q); 360 return (EIO); 361 } 362 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 363 break; 364 case UE_BULK: 365 err = usbd_open_pipe(sce->iface, 366 edesc->bEndpointAddress, 0, &sce->pipeh); 367 if (err) 368 return (EIO); 369 break; 370 case UE_ISOCHRONOUS: 371 if (dir == OUT) 372 return (EINVAL); 373 isize = UGETW(edesc->wMaxPacketSize); 374 if (isize == 0) /* shouldn't happen */ 375 return (EINVAL); 376 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 377 M_USBDEV, M_WAITOK); 378 sce->cur = sce->fill = sce->ibuf; 379 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 380 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 381 endpt, isize)); 382 err = usbd_open_pipe(sce->iface, 383 edesc->bEndpointAddress, 0, &sce->pipeh); 384 if (err) { 385 free(sce->ibuf, M_USBDEV); 386 return (EIO); 387 } 388 for(i = 0; i < UGEN_NISOREQS; ++i) { 389 sce->isoreqs[i].sce = sce; 390 xfer = usbd_alloc_xfer(sc->sc_udev); 391 if (xfer == 0) 392 goto bad; 393 sce->isoreqs[i].xfer = xfer; 394 buf = usbd_alloc_buffer 395 (xfer, isize * UGEN_NISORFRMS); 396 if (buf == 0) { 397 i++; 398 goto bad; 399 } 400 sce->isoreqs[i].dmabuf = buf; 401 for(j = 0; j < UGEN_NISORFRMS; ++j) 402 sce->isoreqs[i].sizes[j] = isize; 403 usbd_setup_isoc_xfer 404 (xfer, sce->pipeh, &sce->isoreqs[i], 405 sce->isoreqs[i].sizes, 406 UGEN_NISORFRMS, USBD_NO_COPY, 407 ugen_isoc_rintr); 408 (void)usbd_transfer(xfer); 409 } 410 DPRINTFN(5, ("ugenopen: isoc open done\n")); 411 break; 412 bad: 413 while (--i >= 0) /* implicit buffer free */ 414 usbd_free_xfer(sce->isoreqs[i].xfer); 415 return (ENOMEM); 416 case UE_CONTROL: 417 return (EINVAL); 418 } 419 } 420 sc->sc_is_open[endpt] = 1; 421 return (0); 422 } 423 424 int 425 ugenclose(struct vnode *devvp, int flag, int mode, struct proc *p) 426 { 427 int endpt; 428 struct ugen_softc *sc; 429 struct ugen_endpoint *sce; 430 int dir; 431 int i; 432 433 endpt = UGENENDPOINT(vdev_rdev(devvp)); 434 sc = vdev_privdata(devvp); 435 436 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 437 flag, mode, UGENUNIT(dev), endpt)); 438 439 #ifdef DIAGNOSTIC 440 if (!sc->sc_is_open[endpt]) { 441 printf("ugenclose: not open\n"); 442 return (EINVAL); 443 } 444 #endif 445 446 if (endpt == USB_CONTROL_ENDPOINT) { 447 DPRINTFN(5, ("ugenclose: close control\n")); 448 sc->sc_is_open[endpt] = 0; 449 return (0); 450 } 451 452 for (dir = OUT; dir <= IN; dir++) { 453 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 454 continue; 455 sce = &sc->sc_endpoints[endpt][dir]; 456 if (sce == NULL || sce->pipeh == NULL) 457 continue; 458 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 459 endpt, dir, sce)); 460 461 usbd_abort_pipe(sce->pipeh); 462 usbd_close_pipe(sce->pipeh); 463 sce->pipeh = NULL; 464 465 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 466 case UE_INTERRUPT: 467 ndflush(&sce->q, sce->q.c_cc); 468 clfree(&sce->q); 469 break; 470 case UE_ISOCHRONOUS: 471 for (i = 0; i < UGEN_NISOREQS; ++i) 472 usbd_free_xfer(sce->isoreqs[i].xfer); 473 474 default: 475 break; 476 } 477 478 if (sce->ibuf != NULL) { 479 free(sce->ibuf, M_USBDEV); 480 sce->ibuf = NULL; 481 clfree(&sce->q); 482 483 } 484 } 485 sc->sc_is_open[endpt] = 0; 486 487 return (0); 488 } 489 490 Static int 491 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 492 { 493 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 494 u_int32_t n, tn; 495 char buf[UGEN_BBSIZE]; 496 usbd_xfer_handle xfer; 497 usbd_status err; 498 int s; 499 int error = 0; 500 u_char buffer[UGEN_CHUNK]; 501 502 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 503 504 if (sc->sc_dying) 505 return (EIO); 506 507 if (endpt == USB_CONTROL_ENDPOINT) 508 return (ENODEV); 509 510 #ifdef DIAGNOSTIC 511 if (sce->edesc == NULL) { 512 printf("ugenread: no edesc\n"); 513 return (EIO); 514 } 515 if (sce->pipeh == NULL) { 516 printf("ugenread: no pipe\n"); 517 return (EIO); 518 } 519 #endif 520 521 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 522 case UE_INTERRUPT: 523 /* Block until activity occured. */ 524 s = splusb(); 525 while (sce->q.c_cc == 0) { 526 if (flag & IO_NDELAY) { 527 splx(s); 528 return (EWOULDBLOCK); 529 } 530 sce->state |= UGEN_ASLP; 531 DPRINTFN(5, ("ugenread: sleep on %p\n", sc)); 532 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 533 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 534 if (sc->sc_dying) 535 error = EIO; 536 if (error) { 537 sce->state &= ~UGEN_ASLP; 538 break; 539 } 540 } 541 splx(s); 542 543 /* Transfer as many chunks as possible. */ 544 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 545 n = min(sce->q.c_cc, uio->uio_resid); 546 if (n > sizeof(buffer)) 547 n = sizeof(buffer); 548 549 /* Remove a small chunk from the input queue. */ 550 q_to_b(&sce->q, buffer, n); 551 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 552 553 /* Copy the data to the user process. */ 554 error = uiomove(buffer, n, uio); 555 if (error) 556 break; 557 } 558 break; 559 case UE_BULK: 560 xfer = usbd_alloc_xfer(sc->sc_udev); 561 if (xfer == 0) 562 return (ENOMEM); 563 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 564 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 565 tn = n; 566 err = usbd_bulk_transfer( 567 xfer, sce->pipeh, 568 sce->state & UGEN_SHORT_OK ? 569 USBD_SHORT_XFER_OK : 0, 570 sce->timeout, buf, &tn, "ugenrb"); 571 if (err) { 572 if (err == USBD_INTERRUPTED) 573 error = EINTR; 574 else if (err == USBD_TIMEOUT) 575 error = ETIMEDOUT; 576 else 577 error = EIO; 578 break; 579 } 580 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 581 error = uiomove(buf, tn, uio); 582 if (error || tn < n) 583 break; 584 } 585 usbd_free_xfer(xfer); 586 break; 587 case UE_ISOCHRONOUS: 588 s = splusb(); 589 while (sce->cur == sce->fill) { 590 if (flag & IO_NDELAY) { 591 splx(s); 592 return (EWOULDBLOCK); 593 } 594 sce->state |= UGEN_ASLP; 595 DPRINTFN(5, ("ugenread: sleep on %p\n", sc)); 596 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 597 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 598 if (sc->sc_dying) 599 error = EIO; 600 if (error) { 601 sce->state &= ~UGEN_ASLP; 602 break; 603 } 604 } 605 606 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 607 if(sce->fill > sce->cur) 608 n = min(sce->fill - sce->cur, uio->uio_resid); 609 else 610 n = min(sce->limit - sce->cur, uio->uio_resid); 611 612 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 613 614 /* Copy the data to the user process. */ 615 error = uiomove(sce->cur, n, uio); 616 if (error) 617 break; 618 sce->cur += n; 619 if(sce->cur >= sce->limit) 620 sce->cur = sce->ibuf; 621 } 622 splx(s); 623 break; 624 625 626 default: 627 return (ENXIO); 628 } 629 return (error); 630 } 631 632 int 633 ugenread(struct vnode *devvp, struct uio *uio, int flag) 634 { 635 int endpt; 636 struct ugen_softc *sc; 637 int error; 638 639 sc = vdev_privdata(devvp); 640 endpt = UGENENDPOINT(vdev_rdev(devvp)); 641 642 sc->sc_refcnt++; 643 error = ugen_do_read(sc, endpt, uio, flag); 644 if (--sc->sc_refcnt < 0) 645 usb_detach_wakeup(USBDEV(sc->sc_dev)); 646 return (error); 647 } 648 649 Static int 650 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 651 { 652 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 653 u_int32_t n; 654 int error = 0; 655 char buf[UGEN_BBSIZE]; 656 usbd_xfer_handle xfer; 657 usbd_status err; 658 659 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 660 661 if (sc->sc_dying) 662 return (EIO); 663 664 if (endpt == USB_CONTROL_ENDPOINT) 665 return (ENODEV); 666 667 #ifdef DIAGNOSTIC 668 if (sce->edesc == NULL) { 669 printf("ugenwrite: no edesc\n"); 670 return (EIO); 671 } 672 if (sce->pipeh == NULL) { 673 printf("ugenwrite: no pipe\n"); 674 return (EIO); 675 } 676 #endif 677 678 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 679 case UE_BULK: 680 xfer = usbd_alloc_xfer(sc->sc_udev); 681 if (xfer == 0) 682 return (EIO); 683 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 684 error = uiomove(buf, n, uio); 685 if (error) 686 break; 687 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 688 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 689 sce->timeout, buf, &n,"ugenwb"); 690 if (err) { 691 if (err == USBD_INTERRUPTED) 692 error = EINTR; 693 else if (err == USBD_TIMEOUT) 694 error = ETIMEDOUT; 695 else 696 error = EIO; 697 break; 698 } 699 } 700 usbd_free_xfer(xfer); 701 break; 702 default: 703 return (ENXIO); 704 } 705 return (error); 706 } 707 708 int 709 ugenwrite(struct vnode *devvp, struct uio *uio, int flag) 710 { 711 int endpt; 712 struct ugen_softc *sc; 713 int error; 714 715 sc = vdev_privdata(devvp); 716 endpt = UGENENDPOINT(vdev_rdev(devvp)); 717 718 sc->sc_refcnt++; 719 error = ugen_do_write(sc, endpt, uio, flag); 720 if (--sc->sc_refcnt < 0) 721 usb_detach_wakeup(USBDEV(sc->sc_dev)); 722 return (error); 723 } 724 725 #if defined(__NetBSD__) || defined(__OpenBSD__) 726 int 727 ugen_activate(device_ptr_t self, enum devact act) 728 { 729 struct ugen_softc *sc = (struct ugen_softc *)self; 730 731 switch (act) { 732 case DVACT_ACTIVATE: 733 return (EOPNOTSUPP); 734 break; 735 736 case DVACT_DEACTIVATE: 737 sc->sc_dying = 1; 738 break; 739 } 740 return (0); 741 } 742 #endif 743 744 USB_DETACH(ugen) 745 { 746 USB_DETACH_START(ugen, sc); 747 struct ugen_endpoint *sce; 748 int i, dir; 749 int s; 750 #if defined(__NetBSD__) || defined(__OpenBSD__) 751 int maj, mn; 752 753 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 754 #elif defined(__FreeBSD__) 755 DPRINTF(("ugen_detach: sc=%p\n", sc)); 756 #endif 757 758 sc->sc_dying = 1; 759 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 760 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 761 for (dir = OUT; dir <= IN; dir++) { 762 sce = &sc->sc_endpoints[i][dir]; 763 if (sce && sce->pipeh) 764 usbd_abort_pipe(sce->pipeh); 765 } 766 } 767 768 s = splusb(); 769 if (--sc->sc_refcnt >= 0) { 770 /* Wake everyone */ 771 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 772 wakeup(&sc->sc_endpoints[i][IN]); 773 /* Wait for processes to go away. */ 774 usb_detach_wait(USBDEV(sc->sc_dev)); 775 } 776 splx(s); 777 778 #if defined(__NetBSD__) || defined(__OpenBSD__) 779 /* locate the major number */ 780 for (maj = 0; maj < nchrdev; maj++) 781 if (cdevsw[maj].d_open == ugenopen) 782 break; 783 784 /* Nuke the vnodes for any open instances (calls close). */ 785 mn = self->dv_unit * USB_MAX_ENDPOINTS; 786 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 787 #elif defined(__FreeBSD__) 788 /* XXX not implemented yet */ 789 #endif 790 791 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 792 USBDEV(sc->sc_dev)); 793 794 return (0); 795 } 796 797 Static void 798 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 799 { 800 struct ugen_endpoint *sce = addr; 801 /*struct ugen_softc *sc = sce->sc;*/ 802 u_int32_t count; 803 u_char *ibuf; 804 805 if (status == USBD_CANCELLED) 806 return; 807 808 if (status != USBD_NORMAL_COMPLETION) { 809 DPRINTF(("ugenintr: status=%d\n", status)); 810 usbd_clear_endpoint_stall_async(sce->pipeh); 811 return; 812 } 813 814 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 815 ibuf = sce->ibuf; 816 817 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 818 xfer, status, count)); 819 DPRINTFN(5, (" data = %02x %02x %02x\n", 820 ibuf[0], ibuf[1], ibuf[2])); 821 822 (void)b_to_q(ibuf, count, &sce->q); 823 824 if (sce->state & UGEN_ASLP) { 825 sce->state &= ~UGEN_ASLP; 826 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 827 wakeup(sce); 828 } 829 selwakeup(&sce->rsel); 830 } 831 832 Static void 833 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 834 usbd_status status) 835 { 836 struct isoreq *req = addr; 837 struct ugen_endpoint *sce = req->sce; 838 u_int32_t count, n; 839 840 /* Return if we are aborting. */ 841 if (status == USBD_CANCELLED) 842 return; 843 844 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 845 DPRINTFN(5,("ugen_isoc_rintr: xfer %d, count=%d\n", req - sce->isoreqs, 846 count)); 847 848 /* throw away oldest input if the buffer is full */ 849 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 850 sce->cur += count; 851 if(sce->cur >= sce->limit) 852 sce->cur = sce->ibuf + (sce->limit - sce->cur); 853 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 854 count)); 855 } 856 857 /* copy data to buffer */ 858 while (count > 0) { 859 n = min(count, sce->limit - sce->fill); 860 memcpy(sce->fill, req->dmabuf, n); 861 862 count -= n; 863 sce->fill += n; 864 if(sce->fill == sce->limit) 865 sce->fill = sce->ibuf; 866 } 867 868 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 869 USBD_NO_COPY, ugen_isoc_rintr); 870 (void)usbd_transfer(xfer); 871 872 if (sce->state & UGEN_ASLP) { 873 sce->state &= ~UGEN_ASLP; 874 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 875 wakeup(sce); 876 } 877 selwakeup(&sce->rsel); 878 } 879 880 Static usbd_status 881 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 882 { 883 usbd_interface_handle iface; 884 usb_endpoint_descriptor_t *ed; 885 usbd_status err; 886 struct ugen_endpoint *sce; 887 u_int8_t niface, nendpt, endptno, endpt; 888 int dir; 889 890 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 891 892 err = usbd_interface_count(sc->sc_udev, &niface); 893 if (err) 894 return (err); 895 if (ifaceidx < 0 || ifaceidx >= niface) 896 return (USBD_INVAL); 897 898 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 899 if (err) 900 return (err); 901 err = usbd_endpoint_count(iface, &nendpt); 902 if (err) 903 return (err); 904 /* XXX should only do this after setting new altno has succeeded */ 905 for (endptno = 0; endptno < nendpt; endptno++) { 906 ed = usbd_interface2endpoint_descriptor(iface,endptno); 907 endpt = ed->bEndpointAddress; 908 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 909 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 910 sce->sc = 0; 911 sce->edesc = 0; 912 sce->iface = 0; 913 } 914 915 /* change setting */ 916 err = usbd_set_interface(iface, altno); 917 if (err) 918 return (err); 919 920 err = usbd_endpoint_count(iface, &nendpt); 921 if (err) 922 return (err); 923 for (endptno = 0; endptno < nendpt; endptno++) { 924 ed = usbd_interface2endpoint_descriptor(iface,endptno); 925 endpt = ed->bEndpointAddress; 926 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 927 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 928 sce->sc = sc; 929 sce->edesc = ed; 930 sce->iface = iface; 931 } 932 return (0); 933 } 934 935 /* Retrieve a complete descriptor for a certain device and index. */ 936 Static usb_config_descriptor_t * 937 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 938 { 939 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 940 int len; 941 usbd_status err; 942 943 if (index == USB_CURRENT_CONFIG_INDEX) { 944 tdesc = usbd_get_config_descriptor(sc->sc_udev); 945 len = UGETW(tdesc->wTotalLength); 946 if (lenp) 947 *lenp = len; 948 cdesc = malloc(len, M_TEMP, M_WAITOK); 949 memcpy(cdesc, tdesc, len); 950 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 951 } else { 952 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 953 if (err) 954 return (0); 955 len = UGETW(cdescr.wTotalLength); 956 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 957 if (lenp) 958 *lenp = len; 959 cdesc = malloc(len, M_TEMP, M_WAITOK); 960 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc,len); 961 if (err) { 962 free(cdesc, M_TEMP); 963 return (0); 964 } 965 } 966 return (cdesc); 967 } 968 969 Static int 970 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 971 { 972 usbd_interface_handle iface; 973 usbd_status err; 974 975 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 976 if (err) 977 return (-1); 978 return (usbd_get_interface_altindex(iface)); 979 } 980 981 Static int 982 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 983 caddr_t addr, int flag, struct proc *p) 984 { 985 struct ugen_endpoint *sce; 986 usbd_status err; 987 usbd_interface_handle iface; 988 struct usb_config_desc *cd; 989 usb_config_descriptor_t *cdesc; 990 struct usb_interface_desc *id; 991 usb_interface_descriptor_t *idesc; 992 struct usb_endpoint_desc *ed; 993 usb_endpoint_descriptor_t *edesc; 994 struct usb_alt_interface *ai; 995 struct usb_string_desc *si; 996 u_int8_t conf, alt; 997 998 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 999 if (sc->sc_dying) 1000 return (EIO); 1001 1002 switch (cmd) { 1003 case FIONBIO: 1004 /* All handled in the upper FS layer. */ 1005 return (0); 1006 case USB_SET_SHORT_XFER: 1007 /* This flag only affects read */ 1008 if (endpt == USB_CONTROL_ENDPOINT) 1009 return (EINVAL); 1010 sce = &sc->sc_endpoints[endpt][IN]; 1011 if (sce == NULL) 1012 return (EINVAL); 1013 #ifdef DIAGNOSTIC 1014 if (sce->pipeh == NULL) { 1015 printf("ugenioctl: USB_SET_SHORT_XFER, no pipe\n"); 1016 return (EIO); 1017 } 1018 #endif 1019 if (*(int *)addr) 1020 sce->state |= UGEN_SHORT_OK; 1021 else 1022 sce->state &= ~UGEN_SHORT_OK; 1023 return (0); 1024 case USB_SET_TIMEOUT: 1025 sce = &sc->sc_endpoints[endpt][IN]; 1026 if (sce == NULL) 1027 return (EINVAL); 1028 #ifdef DIAGNOSTIC 1029 if (sce->pipeh == NULL) { 1030 printf("ugenioctl: USB_SET_TIMEOUT, no pipe\n"); 1031 return (EIO); 1032 } 1033 #endif 1034 sce->timeout = *(int *)addr; 1035 return (0); 1036 default: 1037 break; 1038 } 1039 1040 if (endpt != USB_CONTROL_ENDPOINT) 1041 return (EINVAL); 1042 1043 switch (cmd) { 1044 #ifdef UGEN_DEBUG 1045 case USB_SETDEBUG: 1046 ugendebug = *(int *)addr; 1047 break; 1048 #endif 1049 case USB_GET_CONFIG: 1050 err = usbd_get_config(sc->sc_udev, &conf); 1051 if (err) 1052 return (EIO); 1053 *(int *)addr = conf; 1054 break; 1055 case USB_SET_CONFIG: 1056 if (!(flag & FWRITE)) 1057 return (EPERM); 1058 err = ugen_set_config(sc, *(int *)addr); 1059 if (err) 1060 return (EIO); 1061 break; 1062 case USB_GET_ALTINTERFACE: 1063 ai = (struct usb_alt_interface *)addr; 1064 err = usbd_device2interface_handle(sc->sc_udev, 1065 ai->interface_index, &iface); 1066 if (err) 1067 return (EINVAL); 1068 idesc = usbd_get_interface_descriptor(iface); 1069 if (idesc == NULL) 1070 return (EIO); 1071 ai->alt_no = idesc->bAlternateSetting; 1072 break; 1073 case USB_SET_ALTINTERFACE: 1074 if (!(flag & FWRITE)) 1075 return (EPERM); 1076 ai = (struct usb_alt_interface *)addr; 1077 err = usbd_device2interface_handle(sc->sc_udev, 1078 ai->interface_index, &iface); 1079 if (err) 1080 return (EINVAL); 1081 err = ugen_set_interface(sc, ai->interface_index, ai->alt_no); 1082 if (err) 1083 return (EINVAL); 1084 break; 1085 case USB_GET_NO_ALT: 1086 ai = (struct usb_alt_interface *)addr; 1087 cdesc = ugen_get_cdesc(sc, ai->config_index, 0); 1088 if (cdesc == NULL) 1089 return (EINVAL); 1090 idesc = usbd_find_idesc(cdesc, ai->interface_index, 0); 1091 if (idesc == NULL) { 1092 free(cdesc, M_TEMP); 1093 return (EINVAL); 1094 } 1095 ai->alt_no = usbd_get_no_alts(cdesc, idesc->bInterfaceNumber); 1096 free(cdesc, M_TEMP); 1097 break; 1098 case USB_GET_DEVICE_DESC: 1099 *(usb_device_descriptor_t *)addr = 1100 *usbd_get_device_descriptor(sc->sc_udev); 1101 break; 1102 case USB_GET_CONFIG_DESC: 1103 cd = (struct usb_config_desc *)addr; 1104 cdesc = ugen_get_cdesc(sc, cd->config_index, 0); 1105 if (cdesc == NULL) 1106 return (EINVAL); 1107 cd->desc = *cdesc; 1108 free(cdesc, M_TEMP); 1109 break; 1110 case USB_GET_INTERFACE_DESC: 1111 id = (struct usb_interface_desc *)addr; 1112 cdesc = ugen_get_cdesc(sc, id->config_index, 0); 1113 if (cdesc == NULL) 1114 return (EINVAL); 1115 if (id->config_index == USB_CURRENT_CONFIG_INDEX && 1116 id->alt_index == USB_CURRENT_ALT_INDEX) 1117 alt = ugen_get_alt_index(sc, id->interface_index); 1118 else 1119 alt = id->alt_index; 1120 idesc = usbd_find_idesc(cdesc, id->interface_index, alt); 1121 if (idesc == NULL) { 1122 free(cdesc, M_TEMP); 1123 return (EINVAL); 1124 } 1125 id->desc = *idesc; 1126 free(cdesc, M_TEMP); 1127 break; 1128 case USB_GET_ENDPOINT_DESC: 1129 ed = (struct usb_endpoint_desc *)addr; 1130 cdesc = ugen_get_cdesc(sc, ed->config_index, 0); 1131 if (cdesc == NULL) 1132 return (EINVAL); 1133 if (ed->config_index == USB_CURRENT_CONFIG_INDEX && 1134 ed->alt_index == USB_CURRENT_ALT_INDEX) 1135 alt = ugen_get_alt_index(sc, ed->interface_index); 1136 else 1137 alt = ed->alt_index; 1138 edesc = usbd_find_edesc(cdesc, ed->interface_index, 1139 alt, ed->endpoint_index); 1140 if (edesc == NULL) { 1141 free(cdesc, M_TEMP); 1142 return (EINVAL); 1143 } 1144 ed->desc = *edesc; 1145 free(cdesc, M_TEMP); 1146 break; 1147 case USB_GET_FULL_DESC: 1148 { 1149 int len; 1150 struct iovec iov; 1151 struct uio uio; 1152 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1153 int error; 1154 1155 cdesc = ugen_get_cdesc(sc, fd->config_index, &len); 1156 if (len > fd->size) 1157 len = fd->size; 1158 iov.iov_base = (caddr_t)fd->data; 1159 iov.iov_len = len; 1160 uio.uio_iov = &iov; 1161 uio.uio_iovcnt = 1; 1162 uio.uio_resid = len; 1163 uio.uio_offset = 0; 1164 uio.uio_segflg = UIO_USERSPACE; 1165 uio.uio_rw = UIO_READ; 1166 uio.uio_procp = p; 1167 error = uiomove((void *)cdesc, len, &uio); 1168 free(cdesc, M_TEMP); 1169 return (error); 1170 } 1171 case USB_GET_STRING_DESC: 1172 si = (struct usb_string_desc *)addr; 1173 err = usbd_get_string_desc(sc->sc_udev, si->string_index, 1174 si->language_id, &si->desc); 1175 if (err) 1176 return (EINVAL); 1177 break; 1178 case USB_DO_REQUEST: 1179 { 1180 struct usb_ctl_request *ur = (void *)addr; 1181 int len = UGETW(ur->request.wLength); 1182 struct iovec iov; 1183 struct uio uio; 1184 void *ptr = 0; 1185 usbd_status err; 1186 int error = 0; 1187 1188 if (!(flag & FWRITE)) 1189 return (EPERM); 1190 /* Avoid requests that would damage the bus integrity. */ 1191 if ((ur->request.bmRequestType == UT_WRITE_DEVICE && 1192 ur->request.bRequest == UR_SET_ADDRESS) || 1193 (ur->request.bmRequestType == UT_WRITE_DEVICE && 1194 ur->request.bRequest == UR_SET_CONFIG) || 1195 (ur->request.bmRequestType == UT_WRITE_INTERFACE && 1196 ur->request.bRequest == UR_SET_INTERFACE)) 1197 return (EINVAL); 1198 1199 if (len < 0 || len > 32767) 1200 return (EINVAL); 1201 if (len != 0) { 1202 iov.iov_base = (caddr_t)ur->data; 1203 iov.iov_len = len; 1204 uio.uio_iov = &iov; 1205 uio.uio_iovcnt = 1; 1206 uio.uio_resid = len; 1207 uio.uio_offset = 0; 1208 uio.uio_segflg = UIO_USERSPACE; 1209 uio.uio_rw = 1210 ur->request.bmRequestType & UT_READ ? 1211 UIO_READ : UIO_WRITE; 1212 uio.uio_procp = p; 1213 ptr = malloc(len, M_TEMP, M_WAITOK); 1214 if (uio.uio_rw == UIO_WRITE) { 1215 error = uiomove(ptr, len, &uio); 1216 if (error) 1217 goto ret; 1218 } 1219 } 1220 err = usbd_do_request_flags(sc->sc_udev, &ur->request, 1221 ptr, ur->flags, &ur->actlen); 1222 if (err) { 1223 error = EIO; 1224 goto ret; 1225 } 1226 if (len != 0) { 1227 if (uio.uio_rw == UIO_READ) { 1228 error = uiomove(ptr, len, &uio); 1229 if (error) 1230 goto ret; 1231 } 1232 } 1233 ret: 1234 if (ptr) 1235 free(ptr, M_TEMP); 1236 return (error); 1237 } 1238 case USB_GET_DEVICEINFO: 1239 usbd_fill_deviceinfo(sc->sc_udev, 1240 (struct usb_device_info *)addr, 1); 1241 break; 1242 default: 1243 return (EINVAL); 1244 } 1245 return (0); 1246 } 1247 1248 int 1249 ugenioctl(struct vnode *devvp, u_long cmd, caddr_t addr, int flag, 1250 struct proc *p) 1251 { 1252 int endpt; 1253 struct ugen_softc *sc; 1254 int error; 1255 1256 endpt = UGENENDPOINT(vdev_rdev(devvp)); 1257 sc = vdev_privdata(devvp); 1258 1259 sc->sc_refcnt++; 1260 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, p); 1261 if (--sc->sc_refcnt < 0) 1262 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1263 return (error); 1264 } 1265 1266 int 1267 ugenpoll(struct vnode *devvp, int events, struct proc *p) 1268 { 1269 struct ugen_softc *sc; 1270 struct ugen_endpoint *sce; 1271 int revents = 0; 1272 int s; 1273 1274 sc = vdev_privdata(devvp); 1275 1276 if (sc->sc_dying) 1277 return (EIO); 1278 1279 /* XXX always IN */ 1280 sce = &sc->sc_endpoints[UGENENDPOINT(vdev_rdev(devvp))][IN]; 1281 if (sce == NULL) 1282 return (EINVAL); 1283 #ifdef DIAGNOSTIC 1284 if (!sce->edesc) { 1285 printf("ugenpoll: no edesc\n"); 1286 return (EIO); 1287 } 1288 if (!sce->pipeh) { 1289 printf("ugenpoll: no pipe\n"); 1290 return (EIO); 1291 } 1292 #endif 1293 s = splusb(); 1294 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 1295 case UE_INTERRUPT: 1296 if (events & (POLLIN | POLLRDNORM)) { 1297 if (sce->q.c_cc > 0) 1298 revents |= events & (POLLIN | POLLRDNORM); 1299 else 1300 selrecord(p, &sce->rsel); 1301 } 1302 break; 1303 case UE_ISOCHRONOUS: 1304 if (events & (POLLIN | POLLRDNORM)) { 1305 if (sce->cur != sce->fill) 1306 revents |= events & (POLLIN | POLLRDNORM); 1307 else 1308 selrecord(p, &sce->rsel); 1309 } 1310 break; 1311 case UE_BULK: 1312 /* 1313 * We have no easy way of determining if a read will 1314 * yield any data or a write will happen. 1315 * Pretend they will. 1316 */ 1317 revents |= events & 1318 (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM); 1319 break; 1320 default: 1321 break; 1322 } 1323 splx(s); 1324 return (revents); 1325 } 1326 1327 #if defined(__FreeBSD__) 1328 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 1329 #endif 1330
Indexes created Mon Oct 20 01:09:56 GMT 2025