ugen.c revision 1.107
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 (at) 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_ugen_bulk_ra_wb.h" 43 #include "opt_compat_netbsd.h" 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 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 90 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 91 92 struct ugen_endpoint { 93 struct ugen_softc *sc; 94 usb_endpoint_descriptor_t *edesc; 95 usbd_interface_handle iface; 96 int state; 97 #define UGEN_ASLP 0x02 /* waiting for data */ 98 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 99 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 100 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 101 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 102 usbd_pipe_handle pipeh; 103 struct clist q; 104 struct selinfo rsel; 105 u_char *ibuf; /* start of buffer (circular for isoc) */ 106 u_char *fill; /* location for input (isoc) */ 107 u_char *limit; /* end of circular buffer (isoc) */ 108 u_char *cur; /* current read location (isoc) */ 109 u_int32_t timeout; 110 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 111 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 112 u_int32_t ra_wb_used; /* how much is in buffer */ 113 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 114 usbd_xfer_handle ra_wb_xfer; 115 struct isoreq { 116 struct ugen_endpoint *sce; 117 usbd_xfer_handle xfer; 118 void *dmabuf; 119 u_int16_t sizes[UGEN_NISORFRMS]; 120 } isoreqs[UGEN_NISOREQS]; 121 }; 122 123 struct ugen_softc { 124 USBBASEDEVICE sc_dev; /* base device */ 125 usbd_device_handle sc_udev; 126 127 char sc_is_open[USB_MAX_ENDPOINTS]; 128 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 129 #define OUT 0 130 #define IN 1 131 132 int sc_refcnt; 133 char sc_buffer[UGEN_BBSIZE]; 134 u_char sc_dying; 135 }; 136 137 #if defined(__NetBSD__) 138 dev_type_open(ugenopen); 139 dev_type_close(ugenclose); 140 dev_type_read(ugenread); 141 dev_type_write(ugenwrite); 142 dev_type_ioctl(ugenioctl); 143 dev_type_poll(ugenpoll); 144 dev_type_kqfilter(ugenkqfilter); 145 146 const struct cdevsw ugen_cdevsw = { 147 ugenopen, ugenclose, ugenread, ugenwrite, ugenioctl, 148 nostop, notty, ugenpoll, nommap, ugenkqfilter, D_OTHER, 149 }; 150 #elif defined(__OpenBSD__) 151 cdev_decl(ugen); 152 #elif defined(__FreeBSD__) 153 d_open_t ugenopen; 154 d_close_t ugenclose; 155 d_read_t ugenread; 156 d_write_t ugenwrite; 157 d_ioctl_t ugenioctl; 158 d_poll_t ugenpoll; 159 160 #define UGEN_CDEV_MAJOR 114 161 162 Static struct cdevsw ugen_cdevsw = { 163 /* open */ ugenopen, 164 /* close */ ugenclose, 165 /* read */ ugenread, 166 /* write */ ugenwrite, 167 /* ioctl */ ugenioctl, 168 /* poll */ ugenpoll, 169 /* mmap */ nommap, 170 /* strategy */ nostrategy, 171 /* name */ "ugen", 172 /* maj */ UGEN_CDEV_MAJOR, 173 /* dump */ nodump, 174 /* psize */ nopsize, 175 /* flags */ 0, 176 /* bmaj */ -1 177 }; 178 #endif 179 180 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 181 usbd_status status); 182 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 183 usbd_status status); 184 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 185 usbd_status status); 186 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 187 usbd_status status); 188 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 189 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 190 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 191 void *, int, struct lwp *); 192 Static int ugen_set_config(struct ugen_softc *sc, int configno); 193 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 194 int index, int *lenp); 195 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 196 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 197 198 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 199 #define UGENENDPOINT(n) (minor(n) & 0xf) 200 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 201 202 USB_DECLARE_DRIVER(ugen); 203 204 /* toggle to control attach priority. -1 means "let autoconf decide" */ 205 int ugen_override = -1; 206 207 USB_MATCH(ugen) 208 { 209 USB_MATCH_START(ugen, uaa); 210 int override; 211 212 if (ugen_override != -1) 213 override = ugen_override; 214 else 215 override = match->cf_flags & 1; 216 217 if (override) 218 return (UMATCH_HIGHEST); 219 else if (uaa->usegeneric) 220 return (UMATCH_GENERIC); 221 else 222 return (UMATCH_NONE); 223 } 224 225 USB_ATTACH(ugen) 226 { 227 USB_ATTACH_START(ugen, sc, uaa); 228 usbd_device_handle udev; 229 char *devinfop; 230 usbd_status err; 231 int i, dir, conf; 232 233 aprint_naive("\n"); 234 aprint_normal("\n"); 235 236 devinfop = usbd_devinfo_alloc(uaa->device, 0); 237 aprint_normal_dev(self, "%s\n", devinfop); 238 usbd_devinfo_free(devinfop); 239 240 sc->sc_dev = self; 241 sc->sc_udev = udev = uaa->device; 242 243 /* First set configuration index 0, the default one for ugen. */ 244 err = usbd_set_config_index(udev, 0, 0); 245 if (err) { 246 aprint_error_dev(self, 247 "setting configuration index 0 failed\n"); 248 sc->sc_dying = 1; 249 USB_ATTACH_ERROR_RETURN; 250 } 251 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 252 253 /* Set up all the local state for this configuration. */ 254 err = ugen_set_config(sc, conf); 255 if (err) { 256 aprint_error_dev(self, "setting configuration %d failed\n", 257 conf); 258 sc->sc_dying = 1; 259 USB_ATTACH_ERROR_RETURN; 260 } 261 262 #ifdef __FreeBSD__ 263 { 264 static int global_init_done = 0; 265 if (!global_init_done) { 266 cdevsw_add(&ugen_cdevsw); 267 global_init_done = 1; 268 } 269 } 270 #endif 271 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 272 for (dir = OUT; dir <= IN; dir++) { 273 struct ugen_endpoint *sce; 274 275 sce = &sc->sc_endpoints[i][dir]; 276 selinit(&sce->rsel); 277 } 278 } 279 280 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 281 USBDEV(sc->sc_dev)); 282 283 if (!pmf_device_register(self, NULL, NULL)) 284 aprint_error_dev(self, "couldn't establish power handler\n"); 285 286 USB_ATTACH_SUCCESS_RETURN; 287 } 288 289 Static int 290 ugen_set_config(struct ugen_softc *sc, int configno) 291 { 292 usbd_device_handle dev = sc->sc_udev; 293 usb_config_descriptor_t *cdesc; 294 usbd_interface_handle iface; 295 usb_endpoint_descriptor_t *ed; 296 struct ugen_endpoint *sce; 297 u_int8_t niface, nendpt; 298 int ifaceno, endptno, endpt; 299 usbd_status err; 300 int dir; 301 302 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 303 USBDEVNAME(sc->sc_dev), configno, sc)); 304 305 /* 306 * We start at 1, not 0, because we don't care whether the 307 * control endpoint is open or not. It is always present. 308 */ 309 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 310 if (sc->sc_is_open[endptno]) { 311 DPRINTFN(1, 312 ("ugen_set_config: %s - endpoint %d is open\n", 313 USBDEVNAME(sc->sc_dev), endptno)); 314 return (USBD_IN_USE); 315 } 316 317 /* Avoid setting the current value. */ 318 cdesc = usbd_get_config_descriptor(dev); 319 if (!cdesc || cdesc->bConfigurationValue != configno) { 320 err = usbd_set_config_no(dev, configno, 1); 321 if (err) 322 return (err); 323 } 324 325 err = usbd_interface_count(dev, &niface); 326 if (err) 327 return (err); 328 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 329 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 330 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 331 err = usbd_device2interface_handle(dev, ifaceno, &iface); 332 if (err) 333 return (err); 334 err = usbd_endpoint_count(iface, &nendpt); 335 if (err) 336 return (err); 337 for (endptno = 0; endptno < nendpt; endptno++) { 338 ed = usbd_interface2endpoint_descriptor(iface,endptno); 339 KASSERT(ed != NULL); 340 endpt = ed->bEndpointAddress; 341 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 342 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 343 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 344 "(%d,%d), sce=%p\n", 345 endptno, endpt, UE_GET_ADDR(endpt), 346 UE_GET_DIR(endpt), sce)); 347 sce->sc = sc; 348 sce->edesc = ed; 349 sce->iface = iface; 350 } 351 } 352 return (USBD_NORMAL_COMPLETION); 353 } 354 355 int 356 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 357 { 358 struct ugen_softc *sc; 359 int unit = UGENUNIT(dev); 360 int endpt = UGENENDPOINT(dev); 361 usb_endpoint_descriptor_t *edesc; 362 struct ugen_endpoint *sce; 363 int dir, isize; 364 usbd_status err; 365 usbd_xfer_handle xfer; 366 void *tbuf; 367 int i, j; 368 369 USB_GET_SC_OPEN(ugen, unit, sc); 370 371 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 372 flag, mode, unit, endpt)); 373 374 if (sc == NULL || sc->sc_dying) 375 return (ENXIO); 376 377 /* The control endpoint allows multiple opens. */ 378 if (endpt == USB_CONTROL_ENDPOINT) { 379 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 380 return (0); 381 } 382 383 if (sc->sc_is_open[endpt]) 384 return (EBUSY); 385 386 /* Make sure there are pipes for all directions. */ 387 for (dir = OUT; dir <= IN; dir++) { 388 if (flag & (dir == OUT ? FWRITE : FREAD)) { 389 sce = &sc->sc_endpoints[endpt][dir]; 390 if (sce == 0 || sce->edesc == 0) 391 return (ENXIO); 392 } 393 } 394 395 /* Actually open the pipes. */ 396 /* XXX Should back out properly if it fails. */ 397 for (dir = OUT; dir <= IN; dir++) { 398 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 399 continue; 400 sce = &sc->sc_endpoints[endpt][dir]; 401 sce->state = 0; 402 sce->timeout = USBD_NO_TIMEOUT; 403 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 404 sc, endpt, dir, sce)); 405 edesc = sce->edesc; 406 switch (edesc->bmAttributes & UE_XFERTYPE) { 407 case UE_INTERRUPT: 408 if (dir == OUT) { 409 err = usbd_open_pipe(sce->iface, 410 edesc->bEndpointAddress, 0, &sce->pipeh); 411 if (err) 412 return (EIO); 413 break; 414 } 415 isize = UGETW(edesc->wMaxPacketSize); 416 if (isize == 0) /* shouldn't happen */ 417 return (EINVAL); 418 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 419 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 420 endpt, isize)); 421 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 422 return (ENOMEM); 423 err = usbd_open_pipe_intr(sce->iface, 424 edesc->bEndpointAddress, 425 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 426 sce->ibuf, isize, ugenintr, 427 USBD_DEFAULT_INTERVAL); 428 if (err) { 429 free(sce->ibuf, M_USBDEV); 430 clfree(&sce->q); 431 return (EIO); 432 } 433 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 434 break; 435 case UE_BULK: 436 err = usbd_open_pipe(sce->iface, 437 edesc->bEndpointAddress, 0, &sce->pipeh); 438 if (err) 439 return (EIO); 440 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 441 /* 442 * Use request size for non-RA/WB transfers 443 * as the default. 444 */ 445 sce->ra_wb_reqsize = UGEN_BBSIZE; 446 break; 447 case UE_ISOCHRONOUS: 448 if (dir == OUT) 449 return (EINVAL); 450 isize = UGETW(edesc->wMaxPacketSize); 451 if (isize == 0) /* shouldn't happen */ 452 return (EINVAL); 453 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 454 M_USBDEV, M_WAITOK); 455 sce->cur = sce->fill = sce->ibuf; 456 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 457 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 458 endpt, isize)); 459 err = usbd_open_pipe(sce->iface, 460 edesc->bEndpointAddress, 0, &sce->pipeh); 461 if (err) { 462 free(sce->ibuf, M_USBDEV); 463 return (EIO); 464 } 465 for(i = 0; i < UGEN_NISOREQS; ++i) { 466 sce->isoreqs[i].sce = sce; 467 xfer = usbd_alloc_xfer(sc->sc_udev); 468 if (xfer == 0) 469 goto bad; 470 sce->isoreqs[i].xfer = xfer; 471 tbuf = usbd_alloc_buffer 472 (xfer, isize * UGEN_NISORFRMS); 473 if (tbuf == 0) { 474 i++; 475 goto bad; 476 } 477 sce->isoreqs[i].dmabuf = tbuf; 478 for(j = 0; j < UGEN_NISORFRMS; ++j) 479 sce->isoreqs[i].sizes[j] = isize; 480 usbd_setup_isoc_xfer 481 (xfer, sce->pipeh, &sce->isoreqs[i], 482 sce->isoreqs[i].sizes, 483 UGEN_NISORFRMS, USBD_NO_COPY, 484 ugen_isoc_rintr); 485 (void)usbd_transfer(xfer); 486 } 487 DPRINTFN(5, ("ugenopen: isoc open done\n")); 488 break; 489 bad: 490 while (--i >= 0) /* implicit buffer free */ 491 usbd_free_xfer(sce->isoreqs[i].xfer); 492 return (ENOMEM); 493 case UE_CONTROL: 494 sce->timeout = USBD_DEFAULT_TIMEOUT; 495 return (EINVAL); 496 } 497 } 498 sc->sc_is_open[endpt] = 1; 499 return (0); 500 } 501 502 int 503 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 504 { 505 int endpt = UGENENDPOINT(dev); 506 struct ugen_softc *sc; 507 struct ugen_endpoint *sce; 508 int dir; 509 int i; 510 511 USB_GET_SC(ugen, UGENUNIT(dev), sc); 512 513 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 514 flag, mode, UGENUNIT(dev), endpt)); 515 516 #ifdef DIAGNOSTIC 517 if (!sc->sc_is_open[endpt]) { 518 printf("ugenclose: not open\n"); 519 return (EINVAL); 520 } 521 #endif 522 523 if (endpt == USB_CONTROL_ENDPOINT) { 524 DPRINTFN(5, ("ugenclose: close control\n")); 525 sc->sc_is_open[endpt] = 0; 526 return (0); 527 } 528 529 for (dir = OUT; dir <= IN; dir++) { 530 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 531 continue; 532 sce = &sc->sc_endpoints[endpt][dir]; 533 if (sce == NULL || sce->pipeh == NULL) 534 continue; 535 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 536 endpt, dir, sce)); 537 538 usbd_abort_pipe(sce->pipeh); 539 usbd_close_pipe(sce->pipeh); 540 sce->pipeh = NULL; 541 542 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 543 case UE_INTERRUPT: 544 ndflush(&sce->q, sce->q.c_cc); 545 clfree(&sce->q); 546 break; 547 case UE_ISOCHRONOUS: 548 for (i = 0; i < UGEN_NISOREQS; ++i) 549 usbd_free_xfer(sce->isoreqs[i].xfer); 550 break; 551 case UE_BULK: 552 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 553 /* ibuf freed below */ 554 usbd_free_xfer(sce->ra_wb_xfer); 555 break; 556 default: 557 break; 558 } 559 560 if (sce->ibuf != NULL) { 561 free(sce->ibuf, M_USBDEV); 562 sce->ibuf = NULL; 563 clfree(&sce->q); 564 } 565 } 566 sc->sc_is_open[endpt] = 0; 567 568 return (0); 569 } 570 571 Static int 572 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 573 { 574 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 575 u_int32_t n, tn; 576 usbd_xfer_handle xfer; 577 usbd_status err; 578 int s; 579 int error = 0; 580 581 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 582 583 if (sc->sc_dying) 584 return (EIO); 585 586 if (endpt == USB_CONTROL_ENDPOINT) 587 return (ENODEV); 588 589 #ifdef DIAGNOSTIC 590 if (sce->edesc == NULL) { 591 printf("ugenread: no edesc\n"); 592 return (EIO); 593 } 594 if (sce->pipeh == NULL) { 595 printf("ugenread: no pipe\n"); 596 return (EIO); 597 } 598 #endif 599 600 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 601 case UE_INTERRUPT: 602 /* Block until activity occurred. */ 603 s = splusb(); 604 while (sce->q.c_cc == 0) { 605 if (flag & IO_NDELAY) { 606 splx(s); 607 return (EWOULDBLOCK); 608 } 609 sce->state |= UGEN_ASLP; 610 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 611 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 612 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 613 if (sc->sc_dying) 614 error = EIO; 615 if (error) { 616 sce->state &= ~UGEN_ASLP; 617 break; 618 } 619 } 620 splx(s); 621 622 /* Transfer as many chunks as possible. */ 623 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 624 n = min(sce->q.c_cc, uio->uio_resid); 625 if (n > sizeof(sc->sc_buffer)) 626 n = sizeof(sc->sc_buffer); 627 628 /* Remove a small chunk from the input queue. */ 629 q_to_b(&sce->q, sc->sc_buffer, n); 630 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 631 632 /* Copy the data to the user process. */ 633 error = uiomove(sc->sc_buffer, n, uio); 634 if (error) 635 break; 636 } 637 break; 638 case UE_BULK: 639 if (sce->state & UGEN_BULK_RA) { 640 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 641 uio->uio_resid, sce->ra_wb_used)); 642 xfer = sce->ra_wb_xfer; 643 644 s = splusb(); 645 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 646 splx(s); 647 return (EWOULDBLOCK); 648 } 649 while (uio->uio_resid > 0 && !error) { 650 while (sce->ra_wb_used == 0) { 651 sce->state |= UGEN_ASLP; 652 DPRINTFN(5, 653 ("ugenread: sleep on %p\n", 654 sce)); 655 error = tsleep(sce, PZERO | PCATCH, 656 "ugenrb", 0); 657 DPRINTFN(5, 658 ("ugenread: woke, error=%d\n", 659 error)); 660 if (sc->sc_dying) 661 error = EIO; 662 if (error) { 663 sce->state &= ~UGEN_ASLP; 664 break; 665 } 666 } 667 668 /* Copy data to the process. */ 669 while (uio->uio_resid > 0 670 && sce->ra_wb_used > 0) { 671 n = min(uio->uio_resid, 672 sce->ra_wb_used); 673 n = min(n, sce->limit - sce->cur); 674 error = uiomove(sce->cur, n, uio); 675 if (error) 676 break; 677 sce->cur += n; 678 sce->ra_wb_used -= n; 679 if (sce->cur == sce->limit) 680 sce->cur = sce->ibuf; 681 } 682 683 /* 684 * If the transfers stopped because the 685 * buffer was full, restart them. 686 */ 687 if (sce->state & UGEN_RA_WB_STOP && 688 sce->ra_wb_used < sce->limit - sce->ibuf) { 689 n = (sce->limit - sce->ibuf) 690 - sce->ra_wb_used; 691 usbd_setup_xfer(xfer, 692 sce->pipeh, sce, NULL, 693 min(n, sce->ra_wb_xferlen), 694 USBD_NO_COPY, USBD_NO_TIMEOUT, 695 ugen_bulkra_intr); 696 sce->state &= ~UGEN_RA_WB_STOP; 697 err = usbd_transfer(xfer); 698 if (err != USBD_IN_PROGRESS) 699 /* 700 * The transfer has not been 701 * queued. Setting STOP 702 * will make us try 703 * again at the next read. 704 */ 705 sce->state |= UGEN_RA_WB_STOP; 706 } 707 } 708 splx(s); 709 break; 710 } 711 xfer = usbd_alloc_xfer(sc->sc_udev); 712 if (xfer == 0) 713 return (ENOMEM); 714 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 715 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 716 tn = n; 717 err = usbd_bulk_transfer( 718 xfer, sce->pipeh, 719 sce->state & UGEN_SHORT_OK ? 720 USBD_SHORT_XFER_OK : 0, 721 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 722 if (err) { 723 if (err == USBD_INTERRUPTED) 724 error = EINTR; 725 else if (err == USBD_TIMEOUT) 726 error = ETIMEDOUT; 727 else 728 error = EIO; 729 break; 730 } 731 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 732 error = uiomove(sc->sc_buffer, tn, uio); 733 if (error || tn < n) 734 break; 735 } 736 usbd_free_xfer(xfer); 737 break; 738 case UE_ISOCHRONOUS: 739 s = splusb(); 740 while (sce->cur == sce->fill) { 741 if (flag & IO_NDELAY) { 742 splx(s); 743 return (EWOULDBLOCK); 744 } 745 sce->state |= UGEN_ASLP; 746 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 747 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 748 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 749 if (sc->sc_dying) 750 error = EIO; 751 if (error) { 752 sce->state &= ~UGEN_ASLP; 753 break; 754 } 755 } 756 757 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 758 if(sce->fill > sce->cur) 759 n = min(sce->fill - sce->cur, uio->uio_resid); 760 else 761 n = min(sce->limit - sce->cur, uio->uio_resid); 762 763 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 764 765 /* Copy the data to the user process. */ 766 error = uiomove(sce->cur, n, uio); 767 if (error) 768 break; 769 sce->cur += n; 770 if(sce->cur >= sce->limit) 771 sce->cur = sce->ibuf; 772 } 773 splx(s); 774 break; 775 776 777 default: 778 return (ENXIO); 779 } 780 return (error); 781 } 782 783 int 784 ugenread(dev_t dev, struct uio *uio, int flag) 785 { 786 int endpt = UGENENDPOINT(dev); 787 struct ugen_softc *sc; 788 int error; 789 790 USB_GET_SC(ugen, UGENUNIT(dev), sc); 791 792 sc->sc_refcnt++; 793 error = ugen_do_read(sc, endpt, uio, flag); 794 if (--sc->sc_refcnt < 0) 795 usb_detach_wakeup(USBDEV(sc->sc_dev)); 796 return (error); 797 } 798 799 Static int 800 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 801 int flag) 802 { 803 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 804 u_int32_t n; 805 int error = 0; 806 int s; 807 u_int32_t tn; 808 char *dbuf; 809 usbd_xfer_handle xfer; 810 usbd_status err; 811 812 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 813 814 if (sc->sc_dying) 815 return (EIO); 816 817 if (endpt == USB_CONTROL_ENDPOINT) 818 return (ENODEV); 819 820 #ifdef DIAGNOSTIC 821 if (sce->edesc == NULL) { 822 printf("ugenwrite: no edesc\n"); 823 return (EIO); 824 } 825 if (sce->pipeh == NULL) { 826 printf("ugenwrite: no pipe\n"); 827 return (EIO); 828 } 829 #endif 830 831 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 832 case UE_BULK: 833 if (sce->state & UGEN_BULK_WB) { 834 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 835 uio->uio_resid, sce->ra_wb_used)); 836 xfer = sce->ra_wb_xfer; 837 838 s = splusb(); 839 if (sce->ra_wb_used == sce->limit - sce->ibuf && 840 flag & IO_NDELAY) { 841 splx(s); 842 return (EWOULDBLOCK); 843 } 844 while (uio->uio_resid > 0 && !error) { 845 while (sce->ra_wb_used == 846 sce->limit - sce->ibuf) { 847 sce->state |= UGEN_ASLP; 848 DPRINTFN(5, 849 ("ugenwrite: sleep on %p\n", 850 sce)); 851 error = tsleep(sce, PZERO | PCATCH, 852 "ugenwb", 0); 853 DPRINTFN(5, 854 ("ugenwrite: woke, error=%d\n", 855 error)); 856 if (sc->sc_dying) 857 error = EIO; 858 if (error) { 859 sce->state &= ~UGEN_ASLP; 860 break; 861 } 862 } 863 864 /* Copy data from the process. */ 865 while (uio->uio_resid > 0 && 866 sce->ra_wb_used < sce->limit - sce->ibuf) { 867 n = min(uio->uio_resid, 868 (sce->limit - sce->ibuf) 869 - sce->ra_wb_used); 870 n = min(n, sce->limit - sce->fill); 871 error = uiomove(sce->fill, n, uio); 872 if (error) 873 break; 874 sce->fill += n; 875 sce->ra_wb_used += n; 876 if (sce->fill == sce->limit) 877 sce->fill = sce->ibuf; 878 } 879 880 /* 881 * If the transfers stopped because the 882 * buffer was empty, restart them. 883 */ 884 if (sce->state & UGEN_RA_WB_STOP && 885 sce->ra_wb_used > 0) { 886 dbuf = (char *)usbd_get_buffer(xfer); 887 n = min(sce->ra_wb_used, 888 sce->ra_wb_xferlen); 889 tn = min(n, sce->limit - sce->cur); 890 memcpy(dbuf, sce->cur, tn); 891 dbuf += tn; 892 if (n - tn > 0) 893 memcpy(dbuf, sce->ibuf, 894 n - tn); 895 usbd_setup_xfer(xfer, 896 sce->pipeh, sce, NULL, n, 897 USBD_NO_COPY, USBD_NO_TIMEOUT, 898 ugen_bulkwb_intr); 899 sce->state &= ~UGEN_RA_WB_STOP; 900 err = usbd_transfer(xfer); 901 if (err != USBD_IN_PROGRESS) 902 /* 903 * The transfer has not been 904 * queued. Setting STOP 905 * will make us try again 906 * at the next read. 907 */ 908 sce->state |= UGEN_RA_WB_STOP; 909 } 910 } 911 splx(s); 912 break; 913 } 914 xfer = usbd_alloc_xfer(sc->sc_udev); 915 if (xfer == 0) 916 return (EIO); 917 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 918 error = uiomove(sc->sc_buffer, n, uio); 919 if (error) 920 break; 921 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 922 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 923 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 924 if (err) { 925 if (err == USBD_INTERRUPTED) 926 error = EINTR; 927 else if (err == USBD_TIMEOUT) 928 error = ETIMEDOUT; 929 else 930 error = EIO; 931 break; 932 } 933 } 934 usbd_free_xfer(xfer); 935 break; 936 case UE_INTERRUPT: 937 xfer = usbd_alloc_xfer(sc->sc_udev); 938 if (xfer == 0) 939 return (EIO); 940 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 941 uio->uio_resid)) != 0) { 942 error = uiomove(sc->sc_buffer, n, uio); 943 if (error) 944 break; 945 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 946 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 947 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 948 if (err) { 949 if (err == USBD_INTERRUPTED) 950 error = EINTR; 951 else if (err == USBD_TIMEOUT) 952 error = ETIMEDOUT; 953 else 954 error = EIO; 955 break; 956 } 957 } 958 usbd_free_xfer(xfer); 959 break; 960 default: 961 return (ENXIO); 962 } 963 return (error); 964 } 965 966 int 967 ugenwrite(dev_t dev, struct uio *uio, int flag) 968 { 969 int endpt = UGENENDPOINT(dev); 970 struct ugen_softc *sc; 971 int error; 972 973 USB_GET_SC(ugen, UGENUNIT(dev), sc); 974 975 sc->sc_refcnt++; 976 error = ugen_do_write(sc, endpt, uio, flag); 977 if (--sc->sc_refcnt < 0) 978 usb_detach_wakeup(USBDEV(sc->sc_dev)); 979 return (error); 980 } 981 982 #if defined(__NetBSD__) || defined(__OpenBSD__) 983 int 984 ugen_activate(device_ptr_t self, enum devact act) 985 { 986 struct ugen_softc *sc = device_private(self); 987 988 switch (act) { 989 case DVACT_DEACTIVATE: 990 sc->sc_dying = 1; 991 return 0; 992 default: 993 return EOPNOTSUPP; 994 } 995 } 996 #endif 997 998 USB_DETACH(ugen) 999 { 1000 USB_DETACH_START(ugen, sc); 1001 struct ugen_endpoint *sce; 1002 int i, dir; 1003 int s; 1004 #if defined(__NetBSD__) || defined(__OpenBSD__) 1005 int maj, mn; 1006 1007 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1008 #elif defined(__FreeBSD__) 1009 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1010 #endif 1011 1012 sc->sc_dying = 1; 1013 pmf_device_deregister(self); 1014 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1015 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1016 for (dir = OUT; dir <= IN; dir++) { 1017 sce = &sc->sc_endpoints[i][dir]; 1018 if (sce && sce->pipeh) 1019 usbd_abort_pipe(sce->pipeh); 1020 } 1021 } 1022 1023 s = splusb(); 1024 if (--sc->sc_refcnt >= 0) { 1025 /* Wake everyone */ 1026 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1027 wakeup(&sc->sc_endpoints[i][IN]); 1028 /* Wait for processes to go away. */ 1029 usb_detach_wait(USBDEV(sc->sc_dev)); 1030 } 1031 splx(s); 1032 1033 #if defined(__NetBSD__) || defined(__OpenBSD__) 1034 /* locate the major number */ 1035 #if defined(__NetBSD__) 1036 maj = cdevsw_lookup_major(&ugen_cdevsw); 1037 #elif defined(__OpenBSD__) 1038 for (maj = 0; maj < nchrdev; maj++) 1039 if (cdevsw[maj].d_open == ugenopen) 1040 break; 1041 #endif 1042 1043 /* Nuke the vnodes for any open instances (calls close). */ 1044 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1045 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1046 #elif defined(__FreeBSD__) 1047 /* XXX not implemented yet */ 1048 #endif 1049 1050 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1051 USBDEV(sc->sc_dev)); 1052 1053 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1054 for (dir = OUT; dir <= IN; dir++) { 1055 sce = &sc->sc_endpoints[i][dir]; 1056 seldestroy(&sce->rsel); 1057 } 1058 } 1059 1060 return (0); 1061 } 1062 1063 Static void 1064 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1065 { 1066 struct ugen_endpoint *sce = addr; 1067 /*struct ugen_softc *sc = sce->sc;*/ 1068 u_int32_t count; 1069 u_char *ibuf; 1070 1071 if (status == USBD_CANCELLED) 1072 return; 1073 1074 if (status != USBD_NORMAL_COMPLETION) { 1075 DPRINTF(("ugenintr: status=%d\n", status)); 1076 if (status == USBD_STALLED) 1077 usbd_clear_endpoint_stall_async(sce->pipeh); 1078 return; 1079 } 1080 1081 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1082 ibuf = sce->ibuf; 1083 1084 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1085 xfer, status, count)); 1086 DPRINTFN(5, (" data = %02x %02x %02x\n", 1087 ibuf[0], ibuf[1], ibuf[2])); 1088 1089 (void)b_to_q(ibuf, count, &sce->q); 1090 1091 if (sce->state & UGEN_ASLP) { 1092 sce->state &= ~UGEN_ASLP; 1093 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1094 wakeup(sce); 1095 } 1096 selnotify(&sce->rsel, 0, 0); 1097 } 1098 1099 Static void 1100 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1101 usbd_status status) 1102 { 1103 struct isoreq *req = addr; 1104 struct ugen_endpoint *sce = req->sce; 1105 u_int32_t count, n; 1106 int i, isize; 1107 1108 /* Return if we are aborting. */ 1109 if (status == USBD_CANCELLED) 1110 return; 1111 1112 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1113 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1114 (long)(req - sce->isoreqs), count)); 1115 1116 /* throw away oldest input if the buffer is full */ 1117 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1118 sce->cur += count; 1119 if(sce->cur >= sce->limit) 1120 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1121 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1122 count)); 1123 } 1124 1125 isize = UGETW(sce->edesc->wMaxPacketSize); 1126 for (i = 0; i < UGEN_NISORFRMS; i++) { 1127 u_int32_t actlen = req->sizes[i]; 1128 char const *tbuf = (char const *)req->dmabuf + isize * i; 1129 1130 /* copy data to buffer */ 1131 while (actlen > 0) { 1132 n = min(actlen, sce->limit - sce->fill); 1133 memcpy(sce->fill, tbuf, n); 1134 1135 tbuf += n; 1136 actlen -= n; 1137 sce->fill += n; 1138 if(sce->fill == sce->limit) 1139 sce->fill = sce->ibuf; 1140 } 1141 1142 /* setup size for next transfer */ 1143 req->sizes[i] = isize; 1144 } 1145 1146 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1147 USBD_NO_COPY, ugen_isoc_rintr); 1148 (void)usbd_transfer(xfer); 1149 1150 if (sce->state & UGEN_ASLP) { 1151 sce->state &= ~UGEN_ASLP; 1152 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1153 wakeup(sce); 1154 } 1155 selnotify(&sce->rsel, 0, 0); 1156 } 1157 1158 Static void 1159 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1160 usbd_status status) 1161 { 1162 struct ugen_endpoint *sce = addr; 1163 u_int32_t count, n; 1164 char const *tbuf; 1165 usbd_status err; 1166 1167 /* Return if we are aborting. */ 1168 if (status == USBD_CANCELLED) 1169 return; 1170 1171 if (status != USBD_NORMAL_COMPLETION) { 1172 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1173 sce->state |= UGEN_RA_WB_STOP; 1174 if (status == USBD_STALLED) 1175 usbd_clear_endpoint_stall_async(sce->pipeh); 1176 return; 1177 } 1178 1179 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1180 1181 /* Keep track of how much is in the buffer. */ 1182 sce->ra_wb_used += count; 1183 1184 /* Copy data to buffer. */ 1185 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1186 n = min(count, sce->limit - sce->fill); 1187 memcpy(sce->fill, tbuf, n); 1188 tbuf += n; 1189 count -= n; 1190 sce->fill += n; 1191 if (sce->fill == sce->limit) 1192 sce->fill = sce->ibuf; 1193 if (count > 0) { 1194 memcpy(sce->fill, tbuf, count); 1195 sce->fill += count; 1196 } 1197 1198 /* Set up the next request if necessary. */ 1199 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1200 if (n > 0) { 1201 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1202 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1203 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1204 err = usbd_transfer(xfer); 1205 if (err != USBD_IN_PROGRESS) { 1206 printf("usbd_bulkra_intr: error=%d\n", err); 1207 /* 1208 * The transfer has not been queued. Setting STOP 1209 * will make us try again at the next read. 1210 */ 1211 sce->state |= UGEN_RA_WB_STOP; 1212 } 1213 } 1214 else 1215 sce->state |= UGEN_RA_WB_STOP; 1216 1217 if (sce->state & UGEN_ASLP) { 1218 sce->state &= ~UGEN_ASLP; 1219 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1220 wakeup(sce); 1221 } 1222 selnotify(&sce->rsel, 0, 0); 1223 } 1224 1225 Static void 1226 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1227 usbd_status status) 1228 { 1229 struct ugen_endpoint *sce = addr; 1230 u_int32_t count, n; 1231 char *tbuf; 1232 usbd_status err; 1233 1234 /* Return if we are aborting. */ 1235 if (status == USBD_CANCELLED) 1236 return; 1237 1238 if (status != USBD_NORMAL_COMPLETION) { 1239 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1240 sce->state |= UGEN_RA_WB_STOP; 1241 if (status == USBD_STALLED) 1242 usbd_clear_endpoint_stall_async(sce->pipeh); 1243 return; 1244 } 1245 1246 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1247 1248 /* Keep track of how much is in the buffer. */ 1249 sce->ra_wb_used -= count; 1250 1251 /* Update buffer pointers. */ 1252 sce->cur += count; 1253 if (sce->cur >= sce->limit) 1254 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1255 1256 /* Set up next request if necessary. */ 1257 if (sce->ra_wb_used > 0) { 1258 /* copy data from buffer */ 1259 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1260 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1261 n = min(count, sce->limit - sce->cur); 1262 memcpy(tbuf, sce->cur, n); 1263 tbuf += n; 1264 if (count - n > 0) 1265 memcpy(tbuf, sce->ibuf, count - n); 1266 1267 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1268 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1269 err = usbd_transfer(xfer); 1270 if (err != USBD_IN_PROGRESS) { 1271 printf("usbd_bulkwb_intr: error=%d\n", err); 1272 /* 1273 * The transfer has not been queued. Setting STOP 1274 * will make us try again at the next write. 1275 */ 1276 sce->state |= UGEN_RA_WB_STOP; 1277 } 1278 } 1279 else 1280 sce->state |= UGEN_RA_WB_STOP; 1281 1282 if (sce->state & UGEN_ASLP) { 1283 sce->state &= ~UGEN_ASLP; 1284 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1285 wakeup(sce); 1286 } 1287 selnotify(&sce->rsel, 0, 0); 1288 } 1289 1290 Static usbd_status 1291 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1292 { 1293 usbd_interface_handle iface; 1294 usb_endpoint_descriptor_t *ed; 1295 usbd_status err; 1296 struct ugen_endpoint *sce; 1297 u_int8_t niface, nendpt, endptno, endpt; 1298 int dir; 1299 1300 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1301 1302 err = usbd_interface_count(sc->sc_udev, &niface); 1303 if (err) 1304 return (err); 1305 if (ifaceidx < 0 || ifaceidx >= niface) 1306 return (USBD_INVAL); 1307 1308 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1309 if (err) 1310 return (err); 1311 err = usbd_endpoint_count(iface, &nendpt); 1312 if (err) 1313 return (err); 1314 /* XXX should only do this after setting new altno has succeeded */ 1315 for (endptno = 0; endptno < nendpt; endptno++) { 1316 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1317 endpt = ed->bEndpointAddress; 1318 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1319 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1320 sce->sc = 0; 1321 sce->edesc = 0; 1322 sce->iface = 0; 1323 } 1324 1325 /* change setting */ 1326 err = usbd_set_interface(iface, altno); 1327 if (err) 1328 return (err); 1329 1330 err = usbd_endpoint_count(iface, &nendpt); 1331 if (err) 1332 return (err); 1333 for (endptno = 0; endptno < nendpt; endptno++) { 1334 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1335 KASSERT(ed != NULL); 1336 endpt = ed->bEndpointAddress; 1337 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1338 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1339 sce->sc = sc; 1340 sce->edesc = ed; 1341 sce->iface = iface; 1342 } 1343 return (0); 1344 } 1345 1346 /* Retrieve a complete descriptor for a certain device and index. */ 1347 Static usb_config_descriptor_t * 1348 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1349 { 1350 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1351 int len; 1352 usbd_status err; 1353 1354 if (index == USB_CURRENT_CONFIG_INDEX) { 1355 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1356 len = UGETW(tdesc->wTotalLength); 1357 if (lenp) 1358 *lenp = len; 1359 cdesc = malloc(len, M_TEMP, M_WAITOK); 1360 memcpy(cdesc, tdesc, len); 1361 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1362 } else { 1363 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1364 if (err) 1365 return (0); 1366 len = UGETW(cdescr.wTotalLength); 1367 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1368 if (lenp) 1369 *lenp = len; 1370 cdesc = malloc(len, M_TEMP, M_WAITOK); 1371 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1372 if (err) { 1373 free(cdesc, M_TEMP); 1374 return (0); 1375 } 1376 } 1377 return (cdesc); 1378 } 1379 1380 Static int 1381 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1382 { 1383 usbd_interface_handle iface; 1384 usbd_status err; 1385 1386 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1387 if (err) 1388 return (-1); 1389 return (usbd_get_interface_altindex(iface)); 1390 } 1391 1392 Static int 1393 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1394 void *addr, int flag, struct lwp *l) 1395 { 1396 struct ugen_endpoint *sce; 1397 usbd_status err; 1398 usbd_interface_handle iface; 1399 struct usb_config_desc *cd; 1400 usb_config_descriptor_t *cdesc; 1401 struct usb_interface_desc *id; 1402 usb_interface_descriptor_t *idesc; 1403 struct usb_endpoint_desc *ed; 1404 usb_endpoint_descriptor_t *edesc; 1405 struct usb_alt_interface *ai; 1406 struct usb_string_desc *si; 1407 u_int8_t conf, alt; 1408 1409 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1410 if (sc->sc_dying) 1411 return (EIO); 1412 1413 switch (cmd) { 1414 case FIONBIO: 1415 /* All handled in the upper FS layer. */ 1416 return (0); 1417 case USB_SET_SHORT_XFER: 1418 if (endpt == USB_CONTROL_ENDPOINT) 1419 return (EINVAL); 1420 /* This flag only affects read */ 1421 sce = &sc->sc_endpoints[endpt][IN]; 1422 if (sce == NULL || sce->pipeh == NULL) 1423 return (EINVAL); 1424 if (*(int *)addr) 1425 sce->state |= UGEN_SHORT_OK; 1426 else 1427 sce->state &= ~UGEN_SHORT_OK; 1428 return (0); 1429 case USB_SET_TIMEOUT: 1430 sce = &sc->sc_endpoints[endpt][IN]; 1431 if (sce == NULL 1432 /* XXX this shouldn't happen, but the distinction between 1433 input and output pipes isn't clear enough. 1434 || sce->pipeh == NULL */ 1435 ) 1436 return (EINVAL); 1437 sce->timeout = *(int *)addr; 1438 return (0); 1439 case USB_SET_BULK_RA: 1440 if (endpt == USB_CONTROL_ENDPOINT) 1441 return (EINVAL); 1442 sce = &sc->sc_endpoints[endpt][IN]; 1443 if (sce == NULL || sce->pipeh == NULL) 1444 return (EINVAL); 1445 edesc = sce->edesc; 1446 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1447 return (EINVAL); 1448 1449 if (*(int *)addr) { 1450 /* Only turn RA on if it's currently off. */ 1451 if (sce->state & UGEN_BULK_RA) 1452 return (0); 1453 1454 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1455 /* shouldn't happen */ 1456 return (EINVAL); 1457 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1458 if (sce->ra_wb_xfer == NULL) 1459 return (ENOMEM); 1460 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1461 /* 1462 * Set up a dmabuf because we reuse the xfer with 1463 * the same (max) request length like isoc. 1464 */ 1465 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1466 sce->ra_wb_xferlen) == 0) { 1467 usbd_free_xfer(sce->ra_wb_xfer); 1468 return (ENOMEM); 1469 } 1470 sce->ibuf = malloc(sce->ra_wb_bufsize, 1471 M_USBDEV, M_WAITOK); 1472 sce->fill = sce->cur = sce->ibuf; 1473 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1474 sce->ra_wb_used = 0; 1475 sce->state |= UGEN_BULK_RA; 1476 sce->state &= ~UGEN_RA_WB_STOP; 1477 /* Now start reading. */ 1478 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1479 NULL, 1480 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1481 USBD_NO_COPY, USBD_NO_TIMEOUT, 1482 ugen_bulkra_intr); 1483 err = usbd_transfer(sce->ra_wb_xfer); 1484 if (err != USBD_IN_PROGRESS) { 1485 sce->state &= ~UGEN_BULK_RA; 1486 free(sce->ibuf, M_USBDEV); 1487 sce->ibuf = NULL; 1488 usbd_free_xfer(sce->ra_wb_xfer); 1489 return (EIO); 1490 } 1491 } else { 1492 /* Only turn RA off if it's currently on. */ 1493 if (!(sce->state & UGEN_BULK_RA)) 1494 return (0); 1495 1496 sce->state &= ~UGEN_BULK_RA; 1497 usbd_abort_pipe(sce->pipeh); 1498 usbd_free_xfer(sce->ra_wb_xfer); 1499 /* 1500 * XXX Discard whatever's in the buffer, but we 1501 * should keep it around and drain the buffer 1502 * instead. 1503 */ 1504 free(sce->ibuf, M_USBDEV); 1505 sce->ibuf = NULL; 1506 } 1507 return (0); 1508 case USB_SET_BULK_WB: 1509 if (endpt == USB_CONTROL_ENDPOINT) 1510 return (EINVAL); 1511 sce = &sc->sc_endpoints[endpt][OUT]; 1512 if (sce == NULL || sce->pipeh == NULL) 1513 return (EINVAL); 1514 edesc = sce->edesc; 1515 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1516 return (EINVAL); 1517 1518 if (*(int *)addr) { 1519 /* Only turn WB on if it's currently off. */ 1520 if (sce->state & UGEN_BULK_WB) 1521 return (0); 1522 1523 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1524 /* shouldn't happen */ 1525 return (EINVAL); 1526 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1527 if (sce->ra_wb_xfer == NULL) 1528 return (ENOMEM); 1529 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1530 /* 1531 * Set up a dmabuf because we reuse the xfer with 1532 * the same (max) request length like isoc. 1533 */ 1534 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1535 sce->ra_wb_xferlen) == 0) { 1536 usbd_free_xfer(sce->ra_wb_xfer); 1537 return (ENOMEM); 1538 } 1539 sce->ibuf = malloc(sce->ra_wb_bufsize, 1540 M_USBDEV, M_WAITOK); 1541 sce->fill = sce->cur = sce->ibuf; 1542 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1543 sce->ra_wb_used = 0; 1544 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1545 } else { 1546 /* Only turn WB off if it's currently on. */ 1547 if (!(sce->state & UGEN_BULK_WB)) 1548 return (0); 1549 1550 sce->state &= ~UGEN_BULK_WB; 1551 /* 1552 * XXX Discard whatever's in the buffer, but we 1553 * should keep it around and keep writing to 1554 * drain the buffer instead. 1555 */ 1556 usbd_abort_pipe(sce->pipeh); 1557 usbd_free_xfer(sce->ra_wb_xfer); 1558 free(sce->ibuf, M_USBDEV); 1559 sce->ibuf = NULL; 1560 } 1561 return (0); 1562 case USB_SET_BULK_RA_OPT: 1563 case USB_SET_BULK_WB_OPT: 1564 { 1565 struct usb_bulk_ra_wb_opt *opt; 1566 1567 if (endpt == USB_CONTROL_ENDPOINT) 1568 return (EINVAL); 1569 opt = (struct usb_bulk_ra_wb_opt *)addr; 1570 if (cmd == USB_SET_BULK_RA_OPT) 1571 sce = &sc->sc_endpoints[endpt][IN]; 1572 else 1573 sce = &sc->sc_endpoints[endpt][OUT]; 1574 if (sce == NULL || sce->pipeh == NULL) 1575 return (EINVAL); 1576 if (opt->ra_wb_buffer_size < 1 || 1577 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1578 opt->ra_wb_request_size < 1 || 1579 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1580 return (EINVAL); 1581 /* 1582 * XXX These changes do not take effect until the 1583 * next time RA/WB mode is enabled but they ought to 1584 * take effect immediately. 1585 */ 1586 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1587 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1588 return (0); 1589 } 1590 default: 1591 break; 1592 } 1593 1594 if (endpt != USB_CONTROL_ENDPOINT) 1595 return (EINVAL); 1596 1597 switch (cmd) { 1598 #ifdef UGEN_DEBUG 1599 case USB_SETDEBUG: 1600 ugendebug = *(int *)addr; 1601 break; 1602 #endif 1603 case USB_GET_CONFIG: 1604 err = usbd_get_config(sc->sc_udev, &conf); 1605 if (err) 1606 return (EIO); 1607 *(int *)addr = conf; 1608 break; 1609 case USB_SET_CONFIG: 1610 if (!(flag & FWRITE)) 1611 return (EPERM); 1612 err = ugen_set_config(sc, *(int *)addr); 1613 switch (err) { 1614 case USBD_NORMAL_COMPLETION: 1615 break; 1616 case USBD_IN_USE: 1617 return (EBUSY); 1618 default: 1619 return (EIO); 1620 } 1621 break; 1622 case USB_GET_ALTINTERFACE: 1623 ai = (struct usb_alt_interface *)addr; 1624 err = usbd_device2interface_handle(sc->sc_udev, 1625 ai->uai_interface_index, &iface); 1626 if (err) 1627 return (EINVAL); 1628 idesc = usbd_get_interface_descriptor(iface); 1629 if (idesc == NULL) 1630 return (EIO); 1631 ai->uai_alt_no = idesc->bAlternateSetting; 1632 break; 1633 case USB_SET_ALTINTERFACE: 1634 if (!(flag & FWRITE)) 1635 return (EPERM); 1636 ai = (struct usb_alt_interface *)addr; 1637 err = usbd_device2interface_handle(sc->sc_udev, 1638 ai->uai_interface_index, &iface); 1639 if (err) 1640 return (EINVAL); 1641 err = ugen_set_interface(sc, ai->uai_interface_index, 1642 ai->uai_alt_no); 1643 if (err) 1644 return (EINVAL); 1645 break; 1646 case USB_GET_NO_ALT: 1647 ai = (struct usb_alt_interface *)addr; 1648 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1649 if (cdesc == NULL) 1650 return (EINVAL); 1651 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1652 if (idesc == NULL) { 1653 free(cdesc, M_TEMP); 1654 return (EINVAL); 1655 } 1656 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1657 idesc->bInterfaceNumber); 1658 free(cdesc, M_TEMP); 1659 break; 1660 case USB_GET_DEVICE_DESC: 1661 *(usb_device_descriptor_t *)addr = 1662 *usbd_get_device_descriptor(sc->sc_udev); 1663 break; 1664 case USB_GET_CONFIG_DESC: 1665 cd = (struct usb_config_desc *)addr; 1666 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1667 if (cdesc == NULL) 1668 return (EINVAL); 1669 cd->ucd_desc = *cdesc; 1670 free(cdesc, M_TEMP); 1671 break; 1672 case USB_GET_INTERFACE_DESC: 1673 id = (struct usb_interface_desc *)addr; 1674 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1675 if (cdesc == NULL) 1676 return (EINVAL); 1677 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1678 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1679 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1680 else 1681 alt = id->uid_alt_index; 1682 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1683 if (idesc == NULL) { 1684 free(cdesc, M_TEMP); 1685 return (EINVAL); 1686 } 1687 id->uid_desc = *idesc; 1688 free(cdesc, M_TEMP); 1689 break; 1690 case USB_GET_ENDPOINT_DESC: 1691 ed = (struct usb_endpoint_desc *)addr; 1692 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1693 if (cdesc == NULL) 1694 return (EINVAL); 1695 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1696 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1697 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1698 else 1699 alt = ed->ued_alt_index; 1700 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1701 alt, ed->ued_endpoint_index); 1702 if (edesc == NULL) { 1703 free(cdesc, M_TEMP); 1704 return (EINVAL); 1705 } 1706 ed->ued_desc = *edesc; 1707 free(cdesc, M_TEMP); 1708 break; 1709 case USB_GET_FULL_DESC: 1710 { 1711 int len; 1712 struct iovec iov; 1713 struct uio uio; 1714 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1715 int error; 1716 1717 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1718 if (cdesc == NULL) 1719 return (EINVAL); 1720 if (len > fd->ufd_size) 1721 len = fd->ufd_size; 1722 iov.iov_base = (void *)fd->ufd_data; 1723 iov.iov_len = len; 1724 uio.uio_iov = &iov; 1725 uio.uio_iovcnt = 1; 1726 uio.uio_resid = len; 1727 uio.uio_offset = 0; 1728 uio.uio_rw = UIO_READ; 1729 uio.uio_vmspace = l->l_proc->p_vmspace; 1730 error = uiomove((void *)cdesc, len, &uio); 1731 free(cdesc, M_TEMP); 1732 return (error); 1733 } 1734 case USB_GET_STRING_DESC: { 1735 int len; 1736 si = (struct usb_string_desc *)addr; 1737 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1738 si->usd_language_id, &si->usd_desc, &len); 1739 if (err) 1740 return (EINVAL); 1741 break; 1742 } 1743 case USB_DO_REQUEST: 1744 { 1745 struct usb_ctl_request *ur = (void *)addr; 1746 int len = UGETW(ur->ucr_request.wLength); 1747 struct iovec iov; 1748 struct uio uio; 1749 void *ptr = 0; 1750 usbd_status xerr; 1751 int error = 0; 1752 1753 if (!(flag & FWRITE)) 1754 return (EPERM); 1755 /* Avoid requests that would damage the bus integrity. */ 1756 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1757 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1758 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1759 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1760 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1761 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1762 return (EINVAL); 1763 1764 if (len < 0 || len > 32767) 1765 return (EINVAL); 1766 if (len != 0) { 1767 iov.iov_base = (void *)ur->ucr_data; 1768 iov.iov_len = len; 1769 uio.uio_iov = &iov; 1770 uio.uio_iovcnt = 1; 1771 uio.uio_resid = len; 1772 uio.uio_offset = 0; 1773 uio.uio_rw = 1774 ur->ucr_request.bmRequestType & UT_READ ? 1775 UIO_READ : UIO_WRITE; 1776 uio.uio_vmspace = l->l_proc->p_vmspace; 1777 ptr = malloc(len, M_TEMP, M_WAITOK); 1778 if (uio.uio_rw == UIO_WRITE) { 1779 error = uiomove(ptr, len, &uio); 1780 if (error) 1781 goto ret; 1782 } 1783 } 1784 sce = &sc->sc_endpoints[endpt][IN]; 1785 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1786 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1787 if (xerr) { 1788 error = EIO; 1789 goto ret; 1790 } 1791 if (len != 0) { 1792 if (uio.uio_rw == UIO_READ) { 1793 error = uiomove(ptr, len, &uio); 1794 if (error) 1795 goto ret; 1796 } 1797 } 1798 ret: 1799 if (ptr) 1800 free(ptr, M_TEMP); 1801 return (error); 1802 } 1803 case USB_GET_DEVICEINFO: 1804 usbd_fill_deviceinfo(sc->sc_udev, 1805 (struct usb_device_info *)addr, 0); 1806 break; 1807 #ifdef COMPAT_30 1808 case USB_GET_DEVICEINFO_OLD: 1809 usbd_fill_deviceinfo_old(sc->sc_udev, 1810 (struct usb_device_info_old *)addr, 0); 1811 1812 break; 1813 #endif 1814 default: 1815 return (EINVAL); 1816 } 1817 return (0); 1818 } 1819 1820 int 1821 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1822 { 1823 int endpt = UGENENDPOINT(dev); 1824 struct ugen_softc *sc; 1825 int error; 1826 1827 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1828 1829 sc->sc_refcnt++; 1830 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1831 if (--sc->sc_refcnt < 0) 1832 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1833 return (error); 1834 } 1835 1836 int 1837 ugenpoll(dev_t dev, int events, struct lwp *l) 1838 { 1839 struct ugen_softc *sc; 1840 struct ugen_endpoint *sce_in, *sce_out; 1841 int revents = 0; 1842 int s; 1843 1844 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1845 1846 if (sc->sc_dying) 1847 return (POLLHUP); 1848 1849 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1850 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1851 if (sce_in == NULL && sce_out == NULL) 1852 return (POLLERR); 1853 #ifdef DIAGNOSTIC 1854 if (!sce_in->edesc && !sce_out->edesc) { 1855 printf("ugenpoll: no edesc\n"); 1856 return (POLLERR); 1857 } 1858 /* It's possible to have only one pipe open. */ 1859 if (!sce_in->pipeh && !sce_out->pipeh) { 1860 printf("ugenpoll: no pipe\n"); 1861 return (POLLERR); 1862 } 1863 #endif 1864 s = splusb(); 1865 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1866 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1867 case UE_INTERRUPT: 1868 if (sce_in->q.c_cc > 0) 1869 revents |= events & (POLLIN | POLLRDNORM); 1870 else 1871 selrecord(l, &sce_in->rsel); 1872 break; 1873 case UE_ISOCHRONOUS: 1874 if (sce_in->cur != sce_in->fill) 1875 revents |= events & (POLLIN | POLLRDNORM); 1876 else 1877 selrecord(l, &sce_in->rsel); 1878 break; 1879 case UE_BULK: 1880 if (sce_in->state & UGEN_BULK_RA) { 1881 if (sce_in->ra_wb_used > 0) 1882 revents |= events & 1883 (POLLIN | POLLRDNORM); 1884 else 1885 selrecord(l, &sce_in->rsel); 1886 break; 1887 } 1888 /* 1889 * We have no easy way of determining if a read will 1890 * yield any data or a write will happen. 1891 * Pretend they will. 1892 */ 1893 revents |= events & (POLLIN | POLLRDNORM); 1894 break; 1895 default: 1896 break; 1897 } 1898 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1899 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1900 case UE_INTERRUPT: 1901 case UE_ISOCHRONOUS: 1902 /* XXX unimplemented */ 1903 break; 1904 case UE_BULK: 1905 if (sce_out->state & UGEN_BULK_WB) { 1906 if (sce_out->ra_wb_used < 1907 sce_out->limit - sce_out->ibuf) 1908 revents |= events & 1909 (POLLOUT | POLLWRNORM); 1910 else 1911 selrecord(l, &sce_out->rsel); 1912 break; 1913 } 1914 /* 1915 * We have no easy way of determining if a read will 1916 * yield any data or a write will happen. 1917 * Pretend they will. 1918 */ 1919 revents |= events & (POLLOUT | POLLWRNORM); 1920 break; 1921 default: 1922 break; 1923 } 1924 1925 1926 splx(s); 1927 return (revents); 1928 } 1929 1930 static void 1931 filt_ugenrdetach(struct knote *kn) 1932 { 1933 struct ugen_endpoint *sce = kn->kn_hook; 1934 int s; 1935 1936 s = splusb(); 1937 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1938 splx(s); 1939 } 1940 1941 static int 1942 filt_ugenread_intr(struct knote *kn, long hint) 1943 { 1944 struct ugen_endpoint *sce = kn->kn_hook; 1945 1946 kn->kn_data = sce->q.c_cc; 1947 return (kn->kn_data > 0); 1948 } 1949 1950 static int 1951 filt_ugenread_isoc(struct knote *kn, long hint) 1952 { 1953 struct ugen_endpoint *sce = kn->kn_hook; 1954 1955 if (sce->cur == sce->fill) 1956 return (0); 1957 1958 if (sce->cur < sce->fill) 1959 kn->kn_data = sce->fill - sce->cur; 1960 else 1961 kn->kn_data = (sce->limit - sce->cur) + 1962 (sce->fill - sce->ibuf); 1963 1964 return (1); 1965 } 1966 1967 static int 1968 filt_ugenread_bulk(struct knote *kn, long hint) 1969 { 1970 struct ugen_endpoint *sce = kn->kn_hook; 1971 1972 if (!(sce->state & UGEN_BULK_RA)) 1973 /* 1974 * We have no easy way of determining if a read will 1975 * yield any data or a write will happen. 1976 * So, emulate "seltrue". 1977 */ 1978 return (filt_seltrue(kn, hint)); 1979 1980 if (sce->ra_wb_used == 0) 1981 return (0); 1982 1983 kn->kn_data = sce->ra_wb_used; 1984 1985 return (1); 1986 } 1987 1988 static int 1989 filt_ugenwrite_bulk(struct knote *kn, long hint) 1990 { 1991 struct ugen_endpoint *sce = kn->kn_hook; 1992 1993 if (!(sce->state & UGEN_BULK_WB)) 1994 /* 1995 * We have no easy way of determining if a read will 1996 * yield any data or a write will happen. 1997 * So, emulate "seltrue". 1998 */ 1999 return (filt_seltrue(kn, hint)); 2000 2001 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2002 return (0); 2003 2004 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2005 2006 return (1); 2007 } 2008 2009 static const struct filterops ugenread_intr_filtops = 2010 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2011 2012 static const struct filterops ugenread_isoc_filtops = 2013 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2014 2015 static const struct filterops ugenread_bulk_filtops = 2016 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2017 2018 static const struct filterops ugenwrite_bulk_filtops = 2019 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2020 2021 int 2022 ugenkqfilter(dev_t dev, struct knote *kn) 2023 { 2024 struct ugen_softc *sc; 2025 struct ugen_endpoint *sce; 2026 struct klist *klist; 2027 int s; 2028 2029 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2030 2031 if (sc->sc_dying) 2032 return (ENXIO); 2033 2034 switch (kn->kn_filter) { 2035 case EVFILT_READ: 2036 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2037 if (sce == NULL) 2038 return (EINVAL); 2039 2040 klist = &sce->rsel.sel_klist; 2041 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2042 case UE_INTERRUPT: 2043 kn->kn_fop = &ugenread_intr_filtops; 2044 break; 2045 case UE_ISOCHRONOUS: 2046 kn->kn_fop = &ugenread_isoc_filtops; 2047 break; 2048 case UE_BULK: 2049 kn->kn_fop = &ugenread_bulk_filtops; 2050 break; 2051 break; 2052 default: 2053 return (EINVAL); 2054 } 2055 break; 2056 2057 case EVFILT_WRITE: 2058 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2059 if (sce == NULL) 2060 return (EINVAL); 2061 2062 klist = &sce->rsel.sel_klist; 2063 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2064 case UE_INTERRUPT: 2065 case UE_ISOCHRONOUS: 2066 /* XXX poll doesn't support this */ 2067 return (EINVAL); 2068 2069 case UE_BULK: 2070 kn->kn_fop = &ugenwrite_bulk_filtops; 2071 break; 2072 default: 2073 return (EINVAL); 2074 } 2075 break; 2076 2077 default: 2078 return (EINVAL); 2079 } 2080 2081 kn->kn_hook = sce; 2082 2083 s = splusb(); 2084 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2085 splx(s); 2086 2087 return (0); 2088 } 2089 2090 #if defined(__FreeBSD__) 2091 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2092 #endif 2093
Indexes created Wed Oct 22 06:10:02 GMT 2025