1 /* $NetBSD: ugen.c,v 1.56 2002/01/02 16:20:14 augustss 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@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/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.56 2002/01/02 16:20:14 augustss Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 #include <sys/kernel.h> 48 #include <sys/malloc.h> 49 #if defined(__NetBSD__) || defined(__OpenBSD__) 50 #include <sys/device.h> 51 #include <sys/ioctl.h> 52 #elif defined(__FreeBSD__) 53 #include <sys/module.h> 54 #include <sys/bus.h> 55 #include <sys/ioccom.h> 56 #include <sys/conf.h> 57 #include <sys/fcntl.h> 58 #include <sys/filio.h> 59 #endif 60 #include <sys/conf.h> 61 #include <sys/tty.h> 62 #include <sys/file.h> 63 #include <sys/select.h> 64 #include <sys/proc.h> 65 #include <sys/vnode.h> 66 #include <sys/poll.h> 67 68 #include <dev/usb/usb.h> 69 #include <dev/usb/usbdi.h> 70 #include <dev/usb/usbdi_util.h> 71 72 #ifdef UGEN_DEBUG 73 #define DPRINTF(x) if (ugendebug) logprintf x 74 #define DPRINTFN(n,x) if (ugendebug>(n)) logprintf x 75 int ugendebug = 0; 76 #else 77 #define DPRINTF(x) 78 #define DPRINTFN(n,x) 79 #endif 80 81 #define UGEN_CHUNK 128 /* chunk size for read */ 82 #define UGEN_IBSIZE 1020 /* buffer size */ 83 #define UGEN_BBSIZE 1024 84 85 #define UGEN_NISOFRAMES 500 /* 0.5 seconds worth */ 86 #define UGEN_NISOREQS 6 /* number of outstanding xfer requests */ 87 #define UGEN_NISORFRMS 4 /* number of frames (miliseconds) per req */ 88 89 struct ugen_endpoint { 90 struct ugen_softc *sc; 91 usb_endpoint_descriptor_t *edesc; 92 usbd_interface_handle iface; 93 int state; 94 #define UGEN_ASLP 0x02 /* waiting for data */ 95 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 96 usbd_pipe_handle pipeh; 97 struct clist q; 98 struct selinfo rsel; 99 u_char *ibuf; /* start of buffer (circular for isoc) */ 100 u_char *fill; /* location for input (isoc) */ 101 u_char *limit; /* end of circular buffer (isoc) */ 102 u_char *cur; /* current read location (isoc) */ 103 u_int32_t timeout; 104 struct isoreq { 105 struct ugen_endpoint *sce; 106 usbd_xfer_handle xfer; 107 void *dmabuf; 108 u_int16_t sizes[UGEN_NISORFRMS]; 109 } isoreqs[UGEN_NISOREQS]; 110 }; 111 112 struct ugen_softc { 113 USBBASEDEVICE sc_dev; /* base device */ 114 usbd_device_handle sc_udev; 115 116 char sc_is_open[USB_MAX_ENDPOINTS]; 117 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 118 #define OUT 0 119 #define IN 1 120 121 int sc_refcnt; 122 u_char sc_dying; 123 }; 124 125 #if defined(__NetBSD__) || defined(__OpenBSD__) 126 cdev_decl(ugen); 127 #elif defined(__FreeBSD__) 128 d_open_t ugenopen; 129 d_close_t ugenclose; 130 d_read_t ugenread; 131 d_write_t ugenwrite; 132 d_ioctl_t ugenioctl; 133 d_poll_t ugenpoll; 134 135 #define UGEN_CDEV_MAJOR 114 136 137 Static struct cdevsw ugen_cdevsw = { 138 /* open */ ugenopen, 139 /* close */ ugenclose, 140 /* read */ ugenread, 141 /* write */ ugenwrite, 142 /* ioctl */ ugenioctl, 143 /* poll */ ugenpoll, 144 /* mmap */ nommap, 145 /* strategy */ nostrategy, 146 /* name */ "ugen", 147 /* maj */ UGEN_CDEV_MAJOR, 148 /* dump */ nodump, 149 /* psize */ nopsize, 150 /* flags */ 0, 151 /* bmaj */ -1 152 }; 153 #endif 154 155 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 156 usbd_status status); 157 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 158 usbd_status status); 159 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 160 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 161 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 162 caddr_t, int, usb_proc_ptr); 163 Static int ugen_set_config(struct ugen_softc *sc, int configno); 164 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 165 int index, int *lenp); 166 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 167 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 168 169 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 170 #define UGENENDPOINT(n) (minor(n) & 0xf) 171 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 172 173 USB_DECLARE_DRIVER(ugen); 174 175 USB_MATCH(ugen) 176 { 177 USB_MATCH_START(ugen, uaa); 178 179 #if 0 180 if (uaa->matchlvl) 181 return (uaa->matchlvl); 182 #endif 183 if (uaa->usegeneric) 184 return (UMATCH_GENERIC); 185 else 186 return (UMATCH_NONE); 187 } 188 189 USB_ATTACH(ugen) 190 { 191 USB_ATTACH_START(ugen, sc, uaa); 192 usbd_device_handle udev; 193 char devinfo[1024]; 194 usbd_status err; 195 int conf; 196 197 usbd_devinfo(uaa->device, 0, devinfo); 198 USB_ATTACH_SETUP; 199 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfo); 200 201 sc->sc_udev = udev = uaa->device; 202 203 /* First set configuration index 0, the default one for ugen. */ 204 err = usbd_set_config_index(udev, 0, 0); 205 if (err) { 206 printf("%s: setting configuration index 0 failed\n", 207 USBDEVNAME(sc->sc_dev)); 208 sc->sc_dying = 1; 209 USB_ATTACH_ERROR_RETURN; 210 } 211 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 212 213 /* Set up all the local state for this configuration. */ 214 err = ugen_set_config(sc, conf); 215 if (err) { 216 printf("%s: setting configuration %d failed\n", 217 USBDEVNAME(sc->sc_dev), conf); 218 sc->sc_dying = 1; 219 USB_ATTACH_ERROR_RETURN; 220 } 221 222 #ifdef __FreeBSD__ 223 { 224 static int global_init_done = 0; 225 if (!global_init_done) { 226 cdevsw_add(&ugen_cdevsw); 227 global_init_done = 1; 228 } 229 } 230 #endif 231 232 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 233 USBDEV(sc->sc_dev)); 234 235 USB_ATTACH_SUCCESS_RETURN; 236 } 237 238 Static int 239 ugen_set_config(struct ugen_softc *sc, int configno) 240 { 241 usbd_device_handle dev = sc->sc_udev; 242 usbd_interface_handle iface; 243 usb_endpoint_descriptor_t *ed; 244 struct ugen_endpoint *sce; 245 u_int8_t niface, nendpt; 246 int ifaceno, endptno, endpt; 247 usbd_status err; 248 int dir; 249 250 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 251 USBDEVNAME(sc->sc_dev), configno, sc)); 252 253 /* 254 * We start at 1, not 0, because we don't care whether the 255 * control endpoint is open or not. It is always present. 256 */ 257 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 258 if (sc->sc_is_open[endptno]) { 259 DPRINTFN(1, 260 ("ugen_set_config: %s - endpoint %d is open\n", 261 USBDEVNAME(sc->sc_dev), endptno)); 262 return (USBD_IN_USE); 263 } 264 265 /* Avoid setting the current value. */ 266 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 267 err = usbd_set_config_no(dev, configno, 1); 268 if (err) 269 return (err); 270 } 271 272 err = usbd_interface_count(dev, &niface); 273 if (err) 274 return (err); 275 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 276 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 277 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 278 err = usbd_device2interface_handle(dev, ifaceno, &iface); 279 if (err) 280 return (err); 281 err = usbd_endpoint_count(iface, &nendpt); 282 if (err) 283 return (err); 284 for (endptno = 0; endptno < nendpt; endptno++) { 285 ed = usbd_interface2endpoint_descriptor(iface,endptno); 286 endpt = ed->bEndpointAddress; 287 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 288 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 289 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 290 "(%d,%d), sce=%p\n", 291 endptno, endpt, UE_GET_ADDR(endpt), 292 UE_GET_DIR(endpt), sce)); 293 sce->sc = sc; 294 sce->edesc = ed; 295 sce->iface = iface; 296 } 297 } 298 return (USBD_NORMAL_COMPLETION); 299 } 300 301 int 302 ugenopen(dev_t dev, int flag, int mode, usb_proc_ptr p) 303 { 304 struct ugen_softc *sc; 305 int unit = UGENUNIT(dev); 306 int endpt = UGENENDPOINT(dev); 307 usb_endpoint_descriptor_t *edesc; 308 struct ugen_endpoint *sce; 309 int dir, isize; 310 usbd_status err; 311 usbd_xfer_handle xfer; 312 void *buf; 313 int i, j; 314 315 USB_GET_SC_OPEN(ugen, unit, sc); 316 317 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 318 flag, mode, unit, endpt)); 319 320 if (sc == NULL || sc->sc_dying) 321 return (ENXIO); 322 323 if (sc->sc_is_open[endpt]) 324 return (EBUSY); 325 326 if (endpt == USB_CONTROL_ENDPOINT) { 327 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 328 return (0); 329 } 330 331 /* Make sure there are pipes for all directions. */ 332 for (dir = OUT; dir <= IN; dir++) { 333 if (flag & (dir == OUT ? FWRITE : FREAD)) { 334 sce = &sc->sc_endpoints[endpt][dir]; 335 if (sce == 0 || sce->edesc == 0) 336 return (ENXIO); 337 } 338 } 339 340 /* Actually open the pipes. */ 341 /* XXX Should back out properly if it fails. */ 342 for (dir = OUT; dir <= IN; dir++) { 343 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 344 continue; 345 sce = &sc->sc_endpoints[endpt][dir]; 346 sce->state = 0; 347 sce->timeout = USBD_NO_TIMEOUT; 348 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 349 sc, endpt, dir, sce)); 350 edesc = sce->edesc; 351 switch (edesc->bmAttributes & UE_XFERTYPE) { 352 case UE_INTERRUPT: 353 isize = UGETW(edesc->wMaxPacketSize); 354 if (isize == 0) /* shouldn't happen */ 355 return (EINVAL); 356 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 357 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 358 endpt, isize)); 359 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 360 return (ENOMEM); 361 err = usbd_open_pipe_intr(sce->iface, 362 edesc->bEndpointAddress, 363 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 364 sce->ibuf, isize, ugenintr, 365 USBD_DEFAULT_INTERVAL); 366 if (err) { 367 free(sce->ibuf, M_USBDEV); 368 clfree(&sce->q); 369 return (EIO); 370 } 371 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 372 break; 373 case UE_BULK: 374 err = usbd_open_pipe(sce->iface, 375 edesc->bEndpointAddress, 0, &sce->pipeh); 376 if (err) 377 return (EIO); 378 break; 379 case UE_ISOCHRONOUS: 380 if (dir == OUT) 381 return (EINVAL); 382 isize = UGETW(edesc->wMaxPacketSize); 383 if (isize == 0) /* shouldn't happen */ 384 return (EINVAL); 385 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 386 M_USBDEV, M_WAITOK); 387 sce->cur = sce->fill = sce->ibuf; 388 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 389 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 390 endpt, isize)); 391 err = usbd_open_pipe(sce->iface, 392 edesc->bEndpointAddress, 0, &sce->pipeh); 393 if (err) { 394 free(sce->ibuf, M_USBDEV); 395 return (EIO); 396 } 397 for(i = 0; i < UGEN_NISOREQS; ++i) { 398 sce->isoreqs[i].sce = sce; 399 xfer = usbd_alloc_xfer(sc->sc_udev); 400 if (xfer == 0) 401 goto bad; 402 sce->isoreqs[i].xfer = xfer; 403 buf = usbd_alloc_buffer 404 (xfer, isize * UGEN_NISORFRMS); 405 if (buf == 0) { 406 i++; 407 goto bad; 408 } 409 sce->isoreqs[i].dmabuf = buf; 410 for(j = 0; j < UGEN_NISORFRMS; ++j) 411 sce->isoreqs[i].sizes[j] = isize; 412 usbd_setup_isoc_xfer 413 (xfer, sce->pipeh, &sce->isoreqs[i], 414 sce->isoreqs[i].sizes, 415 UGEN_NISORFRMS, USBD_NO_COPY, 416 ugen_isoc_rintr); 417 (void)usbd_transfer(xfer); 418 } 419 DPRINTFN(5, ("ugenopen: isoc open done\n")); 420 break; 421 bad: 422 while (--i >= 0) /* implicit buffer free */ 423 usbd_free_xfer(sce->isoreqs[i].xfer); 424 return (ENOMEM); 425 case UE_CONTROL: 426 return (EINVAL); 427 } 428 } 429 sc->sc_is_open[endpt] = 1; 430 return (0); 431 } 432 433 int 434 ugenclose(dev_t dev, int flag, int mode, usb_proc_ptr p) 435 { 436 int endpt = UGENENDPOINT(dev); 437 struct ugen_softc *sc; 438 struct ugen_endpoint *sce; 439 int dir; 440 int i; 441 442 USB_GET_SC(ugen, UGENUNIT(dev), sc); 443 444 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 445 flag, mode, UGENUNIT(dev), endpt)); 446 447 #ifdef DIAGNOSTIC 448 if (!sc->sc_is_open[endpt]) { 449 printf("ugenclose: not open\n"); 450 return (EINVAL); 451 } 452 #endif 453 454 if (endpt == USB_CONTROL_ENDPOINT) { 455 DPRINTFN(5, ("ugenclose: close control\n")); 456 sc->sc_is_open[endpt] = 0; 457 return (0); 458 } 459 460 for (dir = OUT; dir <= IN; dir++) { 461 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 462 continue; 463 sce = &sc->sc_endpoints[endpt][dir]; 464 if (sce == NULL || sce->pipeh == NULL) 465 continue; 466 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 467 endpt, dir, sce)); 468 469 usbd_abort_pipe(sce->pipeh); 470 usbd_close_pipe(sce->pipeh); 471 sce->pipeh = NULL; 472 473 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 474 case UE_INTERRUPT: 475 ndflush(&sce->q, sce->q.c_cc); 476 clfree(&sce->q); 477 break; 478 case UE_ISOCHRONOUS: 479 for (i = 0; i < UGEN_NISOREQS; ++i) 480 usbd_free_xfer(sce->isoreqs[i].xfer); 481 482 default: 483 break; 484 } 485 486 if (sce->ibuf != NULL) { 487 free(sce->ibuf, M_USBDEV); 488 sce->ibuf = NULL; 489 clfree(&sce->q); 490 } 491 } 492 sc->sc_is_open[endpt] = 0; 493 494 return (0); 495 } 496 497 Static int 498 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 499 { 500 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 501 u_int32_t n, tn; 502 char buf[UGEN_BBSIZE]; 503 usbd_xfer_handle xfer; 504 usbd_status err; 505 int s; 506 int error = 0; 507 u_char buffer[UGEN_CHUNK]; 508 509 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 510 511 if (sc->sc_dying) 512 return (EIO); 513 514 if (endpt == USB_CONTROL_ENDPOINT) 515 return (ENODEV); 516 517 #ifdef DIAGNOSTIC 518 if (sce->edesc == NULL) { 519 printf("ugenread: no edesc\n"); 520 return (EIO); 521 } 522 if (sce->pipeh == NULL) { 523 printf("ugenread: no pipe\n"); 524 return (EIO); 525 } 526 #endif 527 528 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 529 case UE_INTERRUPT: 530 /* Block until activity occurred. */ 531 s = splusb(); 532 while (sce->q.c_cc == 0) { 533 if (flag & IO_NDELAY) { 534 splx(s); 535 return (EWOULDBLOCK); 536 } 537 sce->state |= UGEN_ASLP; 538 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 539 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 540 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 541 if (sc->sc_dying) 542 error = EIO; 543 if (error) { 544 sce->state &= ~UGEN_ASLP; 545 break; 546 } 547 } 548 splx(s); 549 550 /* Transfer as many chunks as possible. */ 551 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 552 n = min(sce->q.c_cc, uio->uio_resid); 553 if (n > sizeof(buffer)) 554 n = sizeof(buffer); 555 556 /* Remove a small chunk from the input queue. */ 557 q_to_b(&sce->q, buffer, n); 558 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 559 560 /* Copy the data to the user process. */ 561 error = uiomove(buffer, n, uio); 562 if (error) 563 break; 564 } 565 break; 566 case UE_BULK: 567 xfer = usbd_alloc_xfer(sc->sc_udev); 568 if (xfer == 0) 569 return (ENOMEM); 570 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 571 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 572 tn = n; 573 err = usbd_bulk_transfer( 574 xfer, sce->pipeh, 575 sce->state & UGEN_SHORT_OK ? 576 USBD_SHORT_XFER_OK : 0, 577 sce->timeout, buf, &tn, "ugenrb"); 578 if (err) { 579 if (err == USBD_INTERRUPTED) 580 error = EINTR; 581 else if (err == USBD_TIMEOUT) 582 error = ETIMEDOUT; 583 else 584 error = EIO; 585 break; 586 } 587 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 588 error = uiomove(buf, tn, uio); 589 if (error || tn < n) 590 break; 591 } 592 usbd_free_xfer(xfer); 593 break; 594 case UE_ISOCHRONOUS: 595 s = splusb(); 596 while (sce->cur == sce->fill) { 597 if (flag & IO_NDELAY) { 598 splx(s); 599 return (EWOULDBLOCK); 600 } 601 sce->state |= UGEN_ASLP; 602 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 603 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 604 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 605 if (sc->sc_dying) 606 error = EIO; 607 if (error) { 608 sce->state &= ~UGEN_ASLP; 609 break; 610 } 611 } 612 613 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 614 if(sce->fill > sce->cur) 615 n = min(sce->fill - sce->cur, uio->uio_resid); 616 else 617 n = min(sce->limit - sce->cur, uio->uio_resid); 618 619 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 620 621 /* Copy the data to the user process. */ 622 error = uiomove(sce->cur, n, uio); 623 if (error) 624 break; 625 sce->cur += n; 626 if(sce->cur >= sce->limit) 627 sce->cur = sce->ibuf; 628 } 629 splx(s); 630 break; 631 632 633 default: 634 return (ENXIO); 635 } 636 return (error); 637 } 638 639 int 640 ugenread(dev_t dev, struct uio *uio, int flag) 641 { 642 int endpt = UGENENDPOINT(dev); 643 struct ugen_softc *sc; 644 int error; 645 646 USB_GET_SC(ugen, UGENUNIT(dev), sc); 647 648 sc->sc_refcnt++; 649 error = ugen_do_read(sc, endpt, uio, flag); 650 if (--sc->sc_refcnt < 0) 651 usb_detach_wakeup(USBDEV(sc->sc_dev)); 652 return (error); 653 } 654 655 Static int 656 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 657 { 658 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 659 u_int32_t n; 660 int error = 0; 661 char buf[UGEN_BBSIZE]; 662 usbd_xfer_handle xfer; 663 usbd_status err; 664 665 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 666 667 if (sc->sc_dying) 668 return (EIO); 669 670 if (endpt == USB_CONTROL_ENDPOINT) 671 return (ENODEV); 672 673 #ifdef DIAGNOSTIC 674 if (sce->edesc == NULL) { 675 printf("ugenwrite: no edesc\n"); 676 return (EIO); 677 } 678 if (sce->pipeh == NULL) { 679 printf("ugenwrite: no pipe\n"); 680 return (EIO); 681 } 682 #endif 683 684 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 685 case UE_BULK: 686 xfer = usbd_alloc_xfer(sc->sc_udev); 687 if (xfer == 0) 688 return (EIO); 689 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 690 error = uiomove(buf, n, uio); 691 if (error) 692 break; 693 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 694 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 695 sce->timeout, buf, &n,"ugenwb"); 696 if (err) { 697 if (err == USBD_INTERRUPTED) 698 error = EINTR; 699 else if (err == USBD_TIMEOUT) 700 error = ETIMEDOUT; 701 else 702 error = EIO; 703 break; 704 } 705 } 706 usbd_free_xfer(xfer); 707 break; 708 default: 709 return (ENXIO); 710 } 711 return (error); 712 } 713 714 int 715 ugenwrite(dev_t dev, struct uio *uio, int flag) 716 { 717 int endpt = UGENENDPOINT(dev); 718 struct ugen_softc *sc; 719 int error; 720 721 USB_GET_SC(ugen, UGENUNIT(dev), sc); 722 723 sc->sc_refcnt++; 724 error = ugen_do_write(sc, endpt, uio, flag); 725 if (--sc->sc_refcnt < 0) 726 usb_detach_wakeup(USBDEV(sc->sc_dev)); 727 return (error); 728 } 729 730 #if defined(__NetBSD__) || defined(__OpenBSD__) 731 int 732 ugen_activate(device_ptr_t self, enum devact act) 733 { 734 struct ugen_softc *sc = (struct ugen_softc *)self; 735 736 switch (act) { 737 case DVACT_ACTIVATE: 738 return (EOPNOTSUPP); 739 break; 740 741 case DVACT_DEACTIVATE: 742 sc->sc_dying = 1; 743 break; 744 } 745 return (0); 746 } 747 #endif 748 749 USB_DETACH(ugen) 750 { 751 USB_DETACH_START(ugen, sc); 752 struct ugen_endpoint *sce; 753 int i, dir; 754 int s; 755 #if defined(__NetBSD__) || defined(__OpenBSD__) 756 int maj, mn; 757 758 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 759 #elif defined(__FreeBSD__) 760 DPRINTF(("ugen_detach: sc=%p\n", sc)); 761 #endif 762 763 sc->sc_dying = 1; 764 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 765 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 766 for (dir = OUT; dir <= IN; dir++) { 767 sce = &sc->sc_endpoints[i][dir]; 768 if (sce && sce->pipeh) 769 usbd_abort_pipe(sce->pipeh); 770 } 771 } 772 773 s = splusb(); 774 if (--sc->sc_refcnt >= 0) { 775 /* Wake everyone */ 776 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 777 wakeup(&sc->sc_endpoints[i][IN]); 778 /* Wait for processes to go away. */ 779 usb_detach_wait(USBDEV(sc->sc_dev)); 780 } 781 splx(s); 782 783 #if defined(__NetBSD__) || defined(__OpenBSD__) 784 /* locate the major number */ 785 for (maj = 0; maj < nchrdev; maj++) 786 if (cdevsw[maj].d_open == ugenopen) 787 break; 788 789 /* Nuke the vnodes for any open instances (calls close). */ 790 mn = self->dv_unit * USB_MAX_ENDPOINTS; 791 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 792 #elif defined(__FreeBSD__) 793 /* XXX not implemented yet */ 794 #endif 795 796 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 797 USBDEV(sc->sc_dev)); 798 799 return (0); 800 } 801 802 Static void 803 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 804 { 805 struct ugen_endpoint *sce = addr; 806 /*struct ugen_softc *sc = sce->sc;*/ 807 u_int32_t count; 808 u_char *ibuf; 809 810 if (status == USBD_CANCELLED) 811 return; 812 813 if (status != USBD_NORMAL_COMPLETION) { 814 DPRINTF(("ugenintr: status=%d\n", status)); 815 if (status == USBD_STALLED) 816 usbd_clear_endpoint_stall_async(sce->pipeh); 817 return; 818 } 819 820 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 821 ibuf = sce->ibuf; 822 823 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 824 xfer, status, count)); 825 DPRINTFN(5, (" data = %02x %02x %02x\n", 826 ibuf[0], ibuf[1], ibuf[2])); 827 828 (void)b_to_q(ibuf, count, &sce->q); 829 830 if (sce->state & UGEN_ASLP) { 831 sce->state &= ~UGEN_ASLP; 832 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 833 wakeup(sce); 834 } 835 selwakeup(&sce->rsel); 836 } 837 838 Static void 839 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 840 usbd_status status) 841 { 842 struct isoreq *req = addr; 843 struct ugen_endpoint *sce = req->sce; 844 u_int32_t count, n; 845 int i, isize; 846 847 /* Return if we are aborting. */ 848 if (status == USBD_CANCELLED) 849 return; 850 851 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 852 DPRINTFN(5,("ugen_isoc_rintr: xfer %d, count=%d\n", req - sce->isoreqs, 853 count)); 854 855 /* throw away oldest input if the buffer is full */ 856 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 857 sce->cur += count; 858 if(sce->cur >= sce->limit) 859 sce->cur = sce->ibuf + (sce->limit - sce->cur); 860 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 861 count)); 862 } 863 864 isize = UGETW(sce->edesc->wMaxPacketSize); 865 for (i = 0; i < UGEN_NISORFRMS; i++) { 866 u_int32_t actlen = req->sizes[i]; 867 char const *buf = (char const *)req->dmabuf + isize * i; 868 869 /* copy data to buffer */ 870 while (actlen > 0) { 871 n = min(actlen, sce->limit - sce->fill); 872 memcpy(sce->fill, buf, n); 873 874 buf += n; 875 actlen -= n; 876 sce->fill += n; 877 if(sce->fill == sce->limit) 878 sce->fill = sce->ibuf; 879 } 880 881 /* setup size for next transfer */ 882 req->sizes[i] = isize; 883 } 884 885 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 886 USBD_NO_COPY, ugen_isoc_rintr); 887 (void)usbd_transfer(xfer); 888 889 if (sce->state & UGEN_ASLP) { 890 sce->state &= ~UGEN_ASLP; 891 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 892 wakeup(sce); 893 } 894 selwakeup(&sce->rsel); 895 } 896 897 Static usbd_status 898 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 899 { 900 usbd_interface_handle iface; 901 usb_endpoint_descriptor_t *ed; 902 usbd_status err; 903 struct ugen_endpoint *sce; 904 u_int8_t niface, nendpt, endptno, endpt; 905 int dir; 906 907 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 908 909 err = usbd_interface_count(sc->sc_udev, &niface); 910 if (err) 911 return (err); 912 if (ifaceidx < 0 || ifaceidx >= niface) 913 return (USBD_INVAL); 914 915 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 916 if (err) 917 return (err); 918 err = usbd_endpoint_count(iface, &nendpt); 919 if (err) 920 return (err); 921 /* XXX should only do this after setting new altno has succeeded */ 922 for (endptno = 0; endptno < nendpt; endptno++) { 923 ed = usbd_interface2endpoint_descriptor(iface,endptno); 924 endpt = ed->bEndpointAddress; 925 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 926 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 927 sce->sc = 0; 928 sce->edesc = 0; 929 sce->iface = 0; 930 } 931 932 /* change setting */ 933 err = usbd_set_interface(iface, altno); 934 if (err) 935 return (err); 936 937 err = usbd_endpoint_count(iface, &nendpt); 938 if (err) 939 return (err); 940 for (endptno = 0; endptno < nendpt; endptno++) { 941 ed = usbd_interface2endpoint_descriptor(iface,endptno); 942 endpt = ed->bEndpointAddress; 943 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 944 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 945 sce->sc = sc; 946 sce->edesc = ed; 947 sce->iface = iface; 948 } 949 return (0); 950 } 951 952 /* Retrieve a complete descriptor for a certain device and index. */ 953 Static usb_config_descriptor_t * 954 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 955 { 956 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 957 int len; 958 usbd_status err; 959 960 if (index == USB_CURRENT_CONFIG_INDEX) { 961 tdesc = usbd_get_config_descriptor(sc->sc_udev); 962 len = UGETW(tdesc->wTotalLength); 963 if (lenp) 964 *lenp = len; 965 cdesc = malloc(len, M_TEMP, M_WAITOK); 966 memcpy(cdesc, tdesc, len); 967 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 968 } else { 969 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 970 if (err) 971 return (0); 972 len = UGETW(cdescr.wTotalLength); 973 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 974 if (lenp) 975 *lenp = len; 976 cdesc = malloc(len, M_TEMP, M_WAITOK); 977 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 978 if (err) { 979 free(cdesc, M_TEMP); 980 return (0); 981 } 982 } 983 return (cdesc); 984 } 985 986 Static int 987 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 988 { 989 usbd_interface_handle iface; 990 usbd_status err; 991 992 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 993 if (err) 994 return (-1); 995 return (usbd_get_interface_altindex(iface)); 996 } 997 998 Static int 999 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1000 caddr_t addr, int flag, usb_proc_ptr p) 1001 { 1002 struct ugen_endpoint *sce; 1003 usbd_status err; 1004 usbd_interface_handle iface; 1005 struct usb_config_desc *cd; 1006 usb_config_descriptor_t *cdesc; 1007 struct usb_interface_desc *id; 1008 usb_interface_descriptor_t *idesc; 1009 struct usb_endpoint_desc *ed; 1010 usb_endpoint_descriptor_t *edesc; 1011 struct usb_alt_interface *ai; 1012 struct usb_string_desc *si; 1013 u_int8_t conf, alt; 1014 1015 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1016 if (sc->sc_dying) 1017 return (EIO); 1018 1019 switch (cmd) { 1020 case FIONBIO: 1021 /* All handled in the upper FS layer. */ 1022 return (0); 1023 case USB_SET_SHORT_XFER: 1024 if (endpt == USB_CONTROL_ENDPOINT) 1025 return (EINVAL); 1026 /* This flag only affects read */ 1027 sce = &sc->sc_endpoints[endpt][IN]; 1028 if (sce == NULL || sce->pipeh == NULL) 1029 return (EINVAL); 1030 if (*(int *)addr) 1031 sce->state |= UGEN_SHORT_OK; 1032 else 1033 sce->state &= ~UGEN_SHORT_OK; 1034 return (0); 1035 case USB_SET_TIMEOUT: 1036 if (endpt == USB_CONTROL_ENDPOINT) { 1037 /* XXX the lower levels don't support this yet. */ 1038 return (EINVAL); 1039 } 1040 sce = &sc->sc_endpoints[endpt][IN]; 1041 if (sce == NULL || sce->pipeh == NULL) 1042 return (EINVAL); 1043 sce->timeout = *(int *)addr; 1044 return (0); 1045 default: 1046 break; 1047 } 1048 1049 if (endpt != USB_CONTROL_ENDPOINT) 1050 return (EINVAL); 1051 1052 switch (cmd) { 1053 #ifdef UGEN_DEBUG 1054 case USB_SETDEBUG: 1055 ugendebug = *(int *)addr; 1056 break; 1057 #endif 1058 case USB_GET_CONFIG: 1059 err = usbd_get_config(sc->sc_udev, &conf); 1060 if (err) 1061 return (EIO); 1062 *(int *)addr = conf; 1063 break; 1064 case USB_SET_CONFIG: 1065 if (!(flag & FWRITE)) 1066 return (EPERM); 1067 err = ugen_set_config(sc, *(int *)addr); 1068 switch (err) { 1069 case USBD_NORMAL_COMPLETION: 1070 break; 1071 case USBD_IN_USE: 1072 return (EBUSY); 1073 default: 1074 return (EIO); 1075 } 1076 break; 1077 case USB_GET_ALTINTERFACE: 1078 ai = (struct usb_alt_interface *)addr; 1079 err = usbd_device2interface_handle(sc->sc_udev, 1080 ai->interface_index, &iface); 1081 if (err) 1082 return (EINVAL); 1083 idesc = usbd_get_interface_descriptor(iface); 1084 if (idesc == NULL) 1085 return (EIO); 1086 ai->alt_no = idesc->bAlternateSetting; 1087 break; 1088 case USB_SET_ALTINTERFACE: 1089 if (!(flag & FWRITE)) 1090 return (EPERM); 1091 ai = (struct usb_alt_interface *)addr; 1092 err = usbd_device2interface_handle(sc->sc_udev, 1093 ai->interface_index, &iface); 1094 if (err) 1095 return (EINVAL); 1096 err = ugen_set_interface(sc, ai->interface_index, ai->alt_no); 1097 if (err) 1098 return (EINVAL); 1099 break; 1100 case USB_GET_NO_ALT: 1101 ai = (struct usb_alt_interface *)addr; 1102 cdesc = ugen_get_cdesc(sc, ai->config_index, 0); 1103 if (cdesc == NULL) 1104 return (EINVAL); 1105 idesc = usbd_find_idesc(cdesc, ai->interface_index, 0); 1106 if (idesc == NULL) { 1107 free(cdesc, M_TEMP); 1108 return (EINVAL); 1109 } 1110 ai->alt_no = usbd_get_no_alts(cdesc, idesc->bInterfaceNumber); 1111 free(cdesc, M_TEMP); 1112 break; 1113 case USB_GET_DEVICE_DESC: 1114 *(usb_device_descriptor_t *)addr = 1115 *usbd_get_device_descriptor(sc->sc_udev); 1116 break; 1117 case USB_GET_CONFIG_DESC: 1118 cd = (struct usb_config_desc *)addr; 1119 cdesc = ugen_get_cdesc(sc, cd->config_index, 0); 1120 if (cdesc == NULL) 1121 return (EINVAL); 1122 cd->desc = *cdesc; 1123 free(cdesc, M_TEMP); 1124 break; 1125 case USB_GET_INTERFACE_DESC: 1126 id = (struct usb_interface_desc *)addr; 1127 cdesc = ugen_get_cdesc(sc, id->config_index, 0); 1128 if (cdesc == NULL) 1129 return (EINVAL); 1130 if (id->config_index == USB_CURRENT_CONFIG_INDEX && 1131 id->alt_index == USB_CURRENT_ALT_INDEX) 1132 alt = ugen_get_alt_index(sc, id->interface_index); 1133 else 1134 alt = id->alt_index; 1135 idesc = usbd_find_idesc(cdesc, id->interface_index, alt); 1136 if (idesc == NULL) { 1137 free(cdesc, M_TEMP); 1138 return (EINVAL); 1139 } 1140 id->desc = *idesc; 1141 free(cdesc, M_TEMP); 1142 break; 1143 case USB_GET_ENDPOINT_DESC: 1144 ed = (struct usb_endpoint_desc *)addr; 1145 cdesc = ugen_get_cdesc(sc, ed->config_index, 0); 1146 if (cdesc == NULL) 1147 return (EINVAL); 1148 if (ed->config_index == USB_CURRENT_CONFIG_INDEX && 1149 ed->alt_index == USB_CURRENT_ALT_INDEX) 1150 alt = ugen_get_alt_index(sc, ed->interface_index); 1151 else 1152 alt = ed->alt_index; 1153 edesc = usbd_find_edesc(cdesc, ed->interface_index, 1154 alt, ed->endpoint_index); 1155 if (edesc == NULL) { 1156 free(cdesc, M_TEMP); 1157 return (EINVAL); 1158 } 1159 ed->desc = *edesc; 1160 free(cdesc, M_TEMP); 1161 break; 1162 case USB_GET_FULL_DESC: 1163 { 1164 int len; 1165 struct iovec iov; 1166 struct uio uio; 1167 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1168 int error; 1169 1170 cdesc = ugen_get_cdesc(sc, fd->config_index, &len); 1171 if (len > fd->size) 1172 len = fd->size; 1173 iov.iov_base = (caddr_t)fd->data; 1174 iov.iov_len = len; 1175 uio.uio_iov = &iov; 1176 uio.uio_iovcnt = 1; 1177 uio.uio_resid = len; 1178 uio.uio_offset = 0; 1179 uio.uio_segflg = UIO_USERSPACE; 1180 uio.uio_rw = UIO_READ; 1181 uio.uio_procp = p; 1182 error = uiomove((void *)cdesc, len, &uio); 1183 free(cdesc, M_TEMP); 1184 return (error); 1185 } 1186 case USB_GET_STRING_DESC: 1187 si = (struct usb_string_desc *)addr; 1188 err = usbd_get_string_desc(sc->sc_udev, si->string_index, 1189 si->language_id, &si->desc); 1190 if (err) 1191 return (EINVAL); 1192 break; 1193 case USB_DO_REQUEST: 1194 { 1195 struct usb_ctl_request *ur = (void *)addr; 1196 int len = UGETW(ur->request.wLength); 1197 struct iovec iov; 1198 struct uio uio; 1199 void *ptr = 0; 1200 usbd_status err; 1201 int error = 0; 1202 1203 if (!(flag & FWRITE)) 1204 return (EPERM); 1205 /* Avoid requests that would damage the bus integrity. */ 1206 if ((ur->request.bmRequestType == UT_WRITE_DEVICE && 1207 ur->request.bRequest == UR_SET_ADDRESS) || 1208 (ur->request.bmRequestType == UT_WRITE_DEVICE && 1209 ur->request.bRequest == UR_SET_CONFIG) || 1210 (ur->request.bmRequestType == UT_WRITE_INTERFACE && 1211 ur->request.bRequest == UR_SET_INTERFACE)) 1212 return (EINVAL); 1213 1214 if (len < 0 || len > 32767) 1215 return (EINVAL); 1216 if (len != 0) { 1217 iov.iov_base = (caddr_t)ur->data; 1218 iov.iov_len = len; 1219 uio.uio_iov = &iov; 1220 uio.uio_iovcnt = 1; 1221 uio.uio_resid = len; 1222 uio.uio_offset = 0; 1223 uio.uio_segflg = UIO_USERSPACE; 1224 uio.uio_rw = 1225 ur->request.bmRequestType & UT_READ ? 1226 UIO_READ : UIO_WRITE; 1227 uio.uio_procp = p; 1228 ptr = malloc(len, M_TEMP, M_WAITOK); 1229 if (uio.uio_rw == UIO_WRITE) { 1230 error = uiomove(ptr, len, &uio); 1231 if (error) 1232 goto ret; 1233 } 1234 } 1235 err = usbd_do_request_flags(sc->sc_udev, &ur->request, 1236 ptr, ur->flags, &ur->actlen); 1237 if (err) { 1238 error = EIO; 1239 goto ret; 1240 } 1241 if (len != 0) { 1242 if (uio.uio_rw == UIO_READ) { 1243 error = uiomove(ptr, len, &uio); 1244 if (error) 1245 goto ret; 1246 } 1247 } 1248 ret: 1249 if (ptr) 1250 free(ptr, M_TEMP); 1251 return (error); 1252 } 1253 case USB_GET_DEVICEINFO: 1254 usbd_fill_deviceinfo(sc->sc_udev, 1255 (struct usb_device_info *)addr, 1); 1256 break; 1257 default: 1258 return (EINVAL); 1259 } 1260 return (0); 1261 } 1262 1263 int 1264 ugenioctl(dev_t dev, u_long cmd, caddr_t addr, int flag, usb_proc_ptr p) 1265 { 1266 int endpt = UGENENDPOINT(dev); 1267 struct ugen_softc *sc; 1268 int error; 1269 1270 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1271 1272 sc->sc_refcnt++; 1273 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, p); 1274 if (--sc->sc_refcnt < 0) 1275 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1276 return (error); 1277 } 1278 1279 int 1280 ugenpoll(dev_t dev, int events, usb_proc_ptr p) 1281 { 1282 struct ugen_softc *sc; 1283 struct ugen_endpoint *sce; 1284 int revents = 0; 1285 int s; 1286 1287 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1288 1289 if (sc->sc_dying) 1290 return (EIO); 1291 1292 /* XXX always IN */ 1293 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1294 if (sce == NULL) 1295 return (EINVAL); 1296 #ifdef DIAGNOSTIC 1297 if (!sce->edesc) { 1298 printf("ugenpoll: no edesc\n"); 1299 return (EIO); 1300 } 1301 if (!sce->pipeh) { 1302 printf("ugenpoll: no pipe\n"); 1303 return (EIO); 1304 } 1305 #endif 1306 s = splusb(); 1307 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 1308 case UE_INTERRUPT: 1309 if (events & (POLLIN | POLLRDNORM)) { 1310 if (sce->q.c_cc > 0) 1311 revents |= events & (POLLIN | POLLRDNORM); 1312 else 1313 selrecord(p, &sce->rsel); 1314 } 1315 break; 1316 case UE_ISOCHRONOUS: 1317 if (events & (POLLIN | POLLRDNORM)) { 1318 if (sce->cur != sce->fill) 1319 revents |= events & (POLLIN | POLLRDNORM); 1320 else 1321 selrecord(p, &sce->rsel); 1322 } 1323 break; 1324 case UE_BULK: 1325 /* 1326 * We have no easy way of determining if a read will 1327 * yield any data or a write will happen. 1328 * Pretend they will. 1329 */ 1330 revents |= events & 1331 (POLLIN | POLLRDNORM | POLLOUT | POLLWRNORM); 1332 break; 1333 default: 1334 break; 1335 } 1336 splx(s); 1337 return (revents); 1338 } 1339 1340 #if defined(__FreeBSD__) 1341 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 1342 #endif 1343