ugen.c revision 1.104
1 /* $NetBSD: ugen.c,v 1.104 2009/09/24 15:36:59 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 1.104 2009/09/24 15:36:59 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 #ifdef UGEN_BULK_RA_WB 111 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 112 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 113 u_int32_t ra_wb_used; /* how much is in buffer */ 114 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 115 usbd_xfer_handle ra_wb_xfer; 116 #endif 117 struct isoreq { 118 struct ugen_endpoint *sce; 119 usbd_xfer_handle xfer; 120 void *dmabuf; 121 u_int16_t sizes[UGEN_NISORFRMS]; 122 } isoreqs[UGEN_NISOREQS]; 123 }; 124 125 struct ugen_softc { 126 USBBASEDEVICE sc_dev; /* base device */ 127 usbd_device_handle sc_udev; 128 129 char sc_is_open[USB_MAX_ENDPOINTS]; 130 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 131 #define OUT 0 132 #define IN 1 133 134 int sc_refcnt; 135 char sc_buffer[UGEN_BBSIZE]; 136 u_char sc_dying; 137 }; 138 139 #if defined(__NetBSD__) 140 dev_type_open(ugenopen); 141 dev_type_close(ugenclose); 142 dev_type_read(ugenread); 143 dev_type_write(ugenwrite); 144 dev_type_ioctl(ugenioctl); 145 dev_type_poll(ugenpoll); 146 dev_type_kqfilter(ugenkqfilter); 147 148 const struct cdevsw ugen_cdevsw = { 149 ugenopen, ugenclose, ugenread, ugenwrite, ugenioctl, 150 nostop, notty, ugenpoll, nommap, ugenkqfilter, D_OTHER, 151 }; 152 #elif defined(__OpenBSD__) 153 cdev_decl(ugen); 154 #elif defined(__FreeBSD__) 155 d_open_t ugenopen; 156 d_close_t ugenclose; 157 d_read_t ugenread; 158 d_write_t ugenwrite; 159 d_ioctl_t ugenioctl; 160 d_poll_t ugenpoll; 161 162 #define UGEN_CDEV_MAJOR 114 163 164 Static struct cdevsw ugen_cdevsw = { 165 /* open */ ugenopen, 166 /* close */ ugenclose, 167 /* read */ ugenread, 168 /* write */ ugenwrite, 169 /* ioctl */ ugenioctl, 170 /* poll */ ugenpoll, 171 /* mmap */ nommap, 172 /* strategy */ nostrategy, 173 /* name */ "ugen", 174 /* maj */ UGEN_CDEV_MAJOR, 175 /* dump */ nodump, 176 /* psize */ nopsize, 177 /* flags */ 0, 178 /* bmaj */ -1 179 }; 180 #endif 181 182 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 183 usbd_status status); 184 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 185 usbd_status status); 186 #ifdef UGEN_BULK_RA_WB 187 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 188 usbd_status status); 189 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 190 usbd_status status); 191 #endif 192 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 193 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 194 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 195 void *, int, struct lwp *); 196 Static int ugen_set_config(struct ugen_softc *sc, int configno); 197 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 198 int index, int *lenp); 199 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 200 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 201 202 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 203 #define UGENENDPOINT(n) (minor(n) & 0xf) 204 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 205 206 USB_DECLARE_DRIVER(ugen); 207 208 USB_MATCH(ugen) 209 { 210 USB_MATCH_START(ugen, uaa); 211 212 if (match->cf_flags & 1) 213 return (UMATCH_HIGHEST); 214 else if (uaa->usegeneric) 215 return (UMATCH_GENERIC); 216 else 217 return (UMATCH_NONE); 218 } 219 220 USB_ATTACH(ugen) 221 { 222 USB_ATTACH_START(ugen, sc, uaa); 223 usbd_device_handle udev; 224 char *devinfop; 225 usbd_status err; 226 int i, dir, conf; 227 228 aprint_naive("\n"); 229 aprint_normal("\n"); 230 231 devinfop = usbd_devinfo_alloc(uaa->device, 0); 232 aprint_normal_dev(self, "%s\n", devinfop); 233 usbd_devinfo_free(devinfop); 234 235 sc->sc_dev = self; 236 sc->sc_udev = udev = uaa->device; 237 238 /* First set configuration index 0, the default one for ugen. */ 239 err = usbd_set_config_index(udev, 0, 0); 240 if (err) { 241 aprint_error_dev(self, 242 "setting configuration index 0 failed\n"); 243 sc->sc_dying = 1; 244 USB_ATTACH_ERROR_RETURN; 245 } 246 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 247 248 /* Set up all the local state for this configuration. */ 249 err = ugen_set_config(sc, conf); 250 if (err) { 251 aprint_error_dev(self, "setting configuration %d failed\n", 252 conf); 253 sc->sc_dying = 1; 254 USB_ATTACH_ERROR_RETURN; 255 } 256 257 #ifdef __FreeBSD__ 258 { 259 static int global_init_done = 0; 260 if (!global_init_done) { 261 cdevsw_add(&ugen_cdevsw); 262 global_init_done = 1; 263 } 264 } 265 #endif 266 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 267 for (dir = OUT; dir <= IN; dir++) { 268 struct ugen_endpoint *sce; 269 270 sce = &sc->sc_endpoints[i][dir]; 271 selinit(&sce->rsel); 272 } 273 } 274 275 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 276 USBDEV(sc->sc_dev)); 277 278 if (!pmf_device_register(self, NULL, NULL)) 279 aprint_error_dev(self, "couldn't establish power handler\n"); 280 281 USB_ATTACH_SUCCESS_RETURN; 282 } 283 284 Static int 285 ugen_set_config(struct ugen_softc *sc, int configno) 286 { 287 usbd_device_handle dev = sc->sc_udev; 288 usb_config_descriptor_t *cdesc; 289 usbd_interface_handle iface; 290 usb_endpoint_descriptor_t *ed; 291 struct ugen_endpoint *sce; 292 u_int8_t niface, nendpt; 293 int ifaceno, endptno, endpt; 294 usbd_status err; 295 int dir; 296 297 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 298 USBDEVNAME(sc->sc_dev), configno, sc)); 299 300 /* 301 * We start at 1, not 0, because we don't care whether the 302 * control endpoint is open or not. It is always present. 303 */ 304 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 305 if (sc->sc_is_open[endptno]) { 306 DPRINTFN(1, 307 ("ugen_set_config: %s - endpoint %d is open\n", 308 USBDEVNAME(sc->sc_dev), endptno)); 309 return (USBD_IN_USE); 310 } 311 312 /* Avoid setting the current value. */ 313 cdesc = usbd_get_config_descriptor(dev); 314 if (!cdesc || cdesc->bConfigurationValue != configno) { 315 err = usbd_set_config_no(dev, configno, 1); 316 if (err) 317 return (err); 318 } 319 320 err = usbd_interface_count(dev, &niface); 321 if (err) 322 return (err); 323 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 324 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 325 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 326 err = usbd_device2interface_handle(dev, ifaceno, &iface); 327 if (err) 328 return (err); 329 err = usbd_endpoint_count(iface, &nendpt); 330 if (err) 331 return (err); 332 for (endptno = 0; endptno < nendpt; endptno++) { 333 ed = usbd_interface2endpoint_descriptor(iface,endptno); 334 KASSERT(ed != NULL); 335 endpt = ed->bEndpointAddress; 336 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 337 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 338 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 339 "(%d,%d), sce=%p\n", 340 endptno, endpt, UE_GET_ADDR(endpt), 341 UE_GET_DIR(endpt), sce)); 342 sce->sc = sc; 343 sce->edesc = ed; 344 sce->iface = iface; 345 } 346 } 347 return (USBD_NORMAL_COMPLETION); 348 } 349 350 int 351 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 352 { 353 struct ugen_softc *sc; 354 int unit = UGENUNIT(dev); 355 int endpt = UGENENDPOINT(dev); 356 usb_endpoint_descriptor_t *edesc; 357 struct ugen_endpoint *sce; 358 int dir, isize; 359 usbd_status err; 360 usbd_xfer_handle xfer; 361 void *tbuf; 362 int i, j; 363 364 USB_GET_SC_OPEN(ugen, unit, sc); 365 366 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 367 flag, mode, unit, endpt)); 368 369 if (sc == NULL || sc->sc_dying) 370 return (ENXIO); 371 372 /* The control endpoint allows multiple opens. */ 373 if (endpt == USB_CONTROL_ENDPOINT) { 374 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 375 return (0); 376 } 377 378 if (sc->sc_is_open[endpt]) 379 return (EBUSY); 380 381 /* Make sure there are pipes for all directions. */ 382 for (dir = OUT; dir <= IN; dir++) { 383 if (flag & (dir == OUT ? FWRITE : FREAD)) { 384 sce = &sc->sc_endpoints[endpt][dir]; 385 if (sce == 0 || sce->edesc == 0) 386 return (ENXIO); 387 } 388 } 389 390 /* Actually open the pipes. */ 391 /* XXX Should back out properly if it fails. */ 392 for (dir = OUT; dir <= IN; dir++) { 393 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 394 continue; 395 sce = &sc->sc_endpoints[endpt][dir]; 396 sce->state = 0; 397 sce->timeout = USBD_NO_TIMEOUT; 398 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 399 sc, endpt, dir, sce)); 400 edesc = sce->edesc; 401 switch (edesc->bmAttributes & UE_XFERTYPE) { 402 case UE_INTERRUPT: 403 if (dir == OUT) { 404 err = usbd_open_pipe(sce->iface, 405 edesc->bEndpointAddress, 0, &sce->pipeh); 406 if (err) 407 return (EIO); 408 break; 409 } 410 isize = UGETW(edesc->wMaxPacketSize); 411 if (isize == 0) /* shouldn't happen */ 412 return (EINVAL); 413 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 414 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 415 endpt, isize)); 416 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 417 return (ENOMEM); 418 err = usbd_open_pipe_intr(sce->iface, 419 edesc->bEndpointAddress, 420 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 421 sce->ibuf, isize, ugenintr, 422 USBD_DEFAULT_INTERVAL); 423 if (err) { 424 free(sce->ibuf, M_USBDEV); 425 clfree(&sce->q); 426 return (EIO); 427 } 428 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 429 break; 430 case UE_BULK: 431 err = usbd_open_pipe(sce->iface, 432 edesc->bEndpointAddress, 0, &sce->pipeh); 433 if (err) 434 return (EIO); 435 #ifdef UGEN_BULK_RA_WB 436 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 437 /* 438 * Use request size for non-RA/WB transfers 439 * as the default. 440 */ 441 sce->ra_wb_reqsize = UGEN_BBSIZE; 442 #endif 443 break; 444 case UE_ISOCHRONOUS: 445 if (dir == OUT) 446 return (EINVAL); 447 isize = UGETW(edesc->wMaxPacketSize); 448 if (isize == 0) /* shouldn't happen */ 449 return (EINVAL); 450 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 451 M_USBDEV, M_WAITOK); 452 sce->cur = sce->fill = sce->ibuf; 453 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 454 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 455 endpt, isize)); 456 err = usbd_open_pipe(sce->iface, 457 edesc->bEndpointAddress, 0, &sce->pipeh); 458 if (err) { 459 free(sce->ibuf, M_USBDEV); 460 return (EIO); 461 } 462 for(i = 0; i < UGEN_NISOREQS; ++i) { 463 sce->isoreqs[i].sce = sce; 464 xfer = usbd_alloc_xfer(sc->sc_udev); 465 if (xfer == 0) 466 goto bad; 467 sce->isoreqs[i].xfer = xfer; 468 tbuf = usbd_alloc_buffer 469 (xfer, isize * UGEN_NISORFRMS); 470 if (tbuf == 0) { 471 i++; 472 goto bad; 473 } 474 sce->isoreqs[i].dmabuf = tbuf; 475 for(j = 0; j < UGEN_NISORFRMS; ++j) 476 sce->isoreqs[i].sizes[j] = isize; 477 usbd_setup_isoc_xfer 478 (xfer, sce->pipeh, &sce->isoreqs[i], 479 sce->isoreqs[i].sizes, 480 UGEN_NISORFRMS, USBD_NO_COPY, 481 ugen_isoc_rintr); 482 (void)usbd_transfer(xfer); 483 } 484 DPRINTFN(5, ("ugenopen: isoc open done\n")); 485 break; 486 bad: 487 while (--i >= 0) /* implicit buffer free */ 488 usbd_free_xfer(sce->isoreqs[i].xfer); 489 return (ENOMEM); 490 case UE_CONTROL: 491 sce->timeout = USBD_DEFAULT_TIMEOUT; 492 return (EINVAL); 493 } 494 } 495 sc->sc_is_open[endpt] = 1; 496 return (0); 497 } 498 499 int 500 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 501 { 502 int endpt = UGENENDPOINT(dev); 503 struct ugen_softc *sc; 504 struct ugen_endpoint *sce; 505 int dir; 506 int i; 507 508 USB_GET_SC(ugen, UGENUNIT(dev), sc); 509 510 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 511 flag, mode, UGENUNIT(dev), endpt)); 512 513 #ifdef DIAGNOSTIC 514 if (!sc->sc_is_open[endpt]) { 515 printf("ugenclose: not open\n"); 516 return (EINVAL); 517 } 518 #endif 519 520 if (endpt == USB_CONTROL_ENDPOINT) { 521 DPRINTFN(5, ("ugenclose: close control\n")); 522 sc->sc_is_open[endpt] = 0; 523 return (0); 524 } 525 526 for (dir = OUT; dir <= IN; dir++) { 527 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 528 continue; 529 sce = &sc->sc_endpoints[endpt][dir]; 530 if (sce == NULL || sce->pipeh == NULL) 531 continue; 532 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 533 endpt, dir, sce)); 534 535 usbd_abort_pipe(sce->pipeh); 536 usbd_close_pipe(sce->pipeh); 537 sce->pipeh = NULL; 538 539 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 540 case UE_INTERRUPT: 541 ndflush(&sce->q, sce->q.c_cc); 542 clfree(&sce->q); 543 break; 544 case UE_ISOCHRONOUS: 545 for (i = 0; i < UGEN_NISOREQS; ++i) 546 usbd_free_xfer(sce->isoreqs[i].xfer); 547 break; 548 #ifdef UGEN_BULK_RA_WB 549 case UE_BULK: 550 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 551 /* ibuf freed below */ 552 usbd_free_xfer(sce->ra_wb_xfer); 553 break; 554 #endif 555 default: 556 break; 557 } 558 559 if (sce->ibuf != NULL) { 560 free(sce->ibuf, M_USBDEV); 561 sce->ibuf = NULL; 562 clfree(&sce->q); 563 } 564 } 565 sc->sc_is_open[endpt] = 0; 566 567 return (0); 568 } 569 570 Static int 571 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 572 { 573 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 574 u_int32_t n, tn; 575 usbd_xfer_handle xfer; 576 usbd_status err; 577 int s; 578 int error = 0; 579 580 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 581 582 if (sc->sc_dying) 583 return (EIO); 584 585 if (endpt == USB_CONTROL_ENDPOINT) 586 return (ENODEV); 587 588 #ifdef DIAGNOSTIC 589 if (sce->edesc == NULL) { 590 printf("ugenread: no edesc\n"); 591 return (EIO); 592 } 593 if (sce->pipeh == NULL) { 594 printf("ugenread: no pipe\n"); 595 return (EIO); 596 } 597 #endif 598 599 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 600 case UE_INTERRUPT: 601 /* Block until activity occurred. */ 602 s = splusb(); 603 while (sce->q.c_cc == 0) { 604 if (flag & IO_NDELAY) { 605 splx(s); 606 return (EWOULDBLOCK); 607 } 608 sce->state |= UGEN_ASLP; 609 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 610 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 611 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 612 if (sc->sc_dying) 613 error = EIO; 614 if (error) { 615 sce->state &= ~UGEN_ASLP; 616 break; 617 } 618 } 619 splx(s); 620 621 /* Transfer as many chunks as possible. */ 622 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 623 n = min(sce->q.c_cc, uio->uio_resid); 624 if (n > sizeof(sc->sc_buffer)) 625 n = sizeof(sc->sc_buffer); 626 627 /* Remove a small chunk from the input queue. */ 628 q_to_b(&sce->q, sc->sc_buffer, n); 629 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 630 631 /* Copy the data to the user process. */ 632 error = uiomove(sc->sc_buffer, n, uio); 633 if (error) 634 break; 635 } 636 break; 637 case UE_BULK: 638 #ifdef UGEN_BULK_RA_WB 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 #endif 712 xfer = usbd_alloc_xfer(sc->sc_udev); 713 if (xfer == 0) 714 return (ENOMEM); 715 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 716 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 717 tn = n; 718 err = usbd_bulk_transfer( 719 xfer, sce->pipeh, 720 sce->state & UGEN_SHORT_OK ? 721 USBD_SHORT_XFER_OK : 0, 722 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 723 if (err) { 724 if (err == USBD_INTERRUPTED) 725 error = EINTR; 726 else if (err == USBD_TIMEOUT) 727 error = ETIMEDOUT; 728 else 729 error = EIO; 730 break; 731 } 732 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 733 error = uiomove(sc->sc_buffer, tn, uio); 734 if (error || tn < n) 735 break; 736 } 737 usbd_free_xfer(xfer); 738 break; 739 case UE_ISOCHRONOUS: 740 s = splusb(); 741 while (sce->cur == sce->fill) { 742 if (flag & IO_NDELAY) { 743 splx(s); 744 return (EWOULDBLOCK); 745 } 746 sce->state |= UGEN_ASLP; 747 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 748 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 749 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 750 if (sc->sc_dying) 751 error = EIO; 752 if (error) { 753 sce->state &= ~UGEN_ASLP; 754 break; 755 } 756 } 757 758 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 759 if(sce->fill > sce->cur) 760 n = min(sce->fill - sce->cur, uio->uio_resid); 761 else 762 n = min(sce->limit - sce->cur, uio->uio_resid); 763 764 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 765 766 /* Copy the data to the user process. */ 767 error = uiomove(sce->cur, n, uio); 768 if (error) 769 break; 770 sce->cur += n; 771 if(sce->cur >= sce->limit) 772 sce->cur = sce->ibuf; 773 } 774 splx(s); 775 break; 776 777 778 default: 779 return (ENXIO); 780 } 781 return (error); 782 } 783 784 int 785 ugenread(dev_t dev, struct uio *uio, int flag) 786 { 787 int endpt = UGENENDPOINT(dev); 788 struct ugen_softc *sc; 789 int error; 790 791 USB_GET_SC(ugen, UGENUNIT(dev), sc); 792 793 sc->sc_refcnt++; 794 error = ugen_do_read(sc, endpt, uio, flag); 795 if (--sc->sc_refcnt < 0) 796 usb_detach_wakeup(USBDEV(sc->sc_dev)); 797 return (error); 798 } 799 800 Static int 801 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 802 int flag) 803 { 804 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 805 u_int32_t n; 806 int error = 0; 807 #ifdef UGEN_BULK_RA_WB 808 int s; 809 u_int32_t tn; 810 char *dbuf; 811 #endif 812 usbd_xfer_handle xfer; 813 usbd_status err; 814 815 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 816 817 if (sc->sc_dying) 818 return (EIO); 819 820 if (endpt == USB_CONTROL_ENDPOINT) 821 return (ENODEV); 822 823 #ifdef DIAGNOSTIC 824 if (sce->edesc == NULL) { 825 printf("ugenwrite: no edesc\n"); 826 return (EIO); 827 } 828 if (sce->pipeh == NULL) { 829 printf("ugenwrite: no pipe\n"); 830 return (EIO); 831 } 832 #endif 833 834 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 835 case UE_BULK: 836 #ifdef UGEN_BULK_RA_WB 837 if (sce->state & UGEN_BULK_WB) { 838 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 839 uio->uio_resid, sce->ra_wb_used)); 840 xfer = sce->ra_wb_xfer; 841 842 s = splusb(); 843 if (sce->ra_wb_used == sce->limit - sce->ibuf && 844 flag & IO_NDELAY) { 845 splx(s); 846 return (EWOULDBLOCK); 847 } 848 while (uio->uio_resid > 0 && !error) { 849 while (sce->ra_wb_used == 850 sce->limit - sce->ibuf) { 851 sce->state |= UGEN_ASLP; 852 DPRINTFN(5, 853 ("ugenwrite: sleep on %p\n", 854 sce)); 855 error = tsleep(sce, PZERO | PCATCH, 856 "ugenwb", 0); 857 DPRINTFN(5, 858 ("ugenwrite: woke, error=%d\n", 859 error)); 860 if (sc->sc_dying) 861 error = EIO; 862 if (error) { 863 sce->state &= ~UGEN_ASLP; 864 break; 865 } 866 } 867 868 /* Copy data from the process. */ 869 while (uio->uio_resid > 0 && 870 sce->ra_wb_used < sce->limit - sce->ibuf) { 871 n = min(uio->uio_resid, 872 (sce->limit - sce->ibuf) 873 - sce->ra_wb_used); 874 n = min(n, sce->limit - sce->fill); 875 error = uiomove(sce->fill, n, uio); 876 if (error) 877 break; 878 sce->fill += n; 879 sce->ra_wb_used += n; 880 if (sce->fill == sce->limit) 881 sce->fill = sce->ibuf; 882 } 883 884 /* 885 * If the transfers stopped because the 886 * buffer was empty, restart them. 887 */ 888 if (sce->state & UGEN_RA_WB_STOP && 889 sce->ra_wb_used > 0) { 890 dbuf = (char *)usbd_get_buffer(xfer); 891 n = min(sce->ra_wb_used, 892 sce->ra_wb_xferlen); 893 tn = min(n, sce->limit - sce->cur); 894 memcpy(dbuf, sce->cur, tn); 895 dbuf += tn; 896 if (n - tn > 0) 897 memcpy(dbuf, sce->ibuf, 898 n - tn); 899 usbd_setup_xfer(xfer, 900 sce->pipeh, sce, NULL, n, 901 USBD_NO_COPY, USBD_NO_TIMEOUT, 902 ugen_bulkwb_intr); 903 sce->state &= ~UGEN_RA_WB_STOP; 904 err = usbd_transfer(xfer); 905 if (err != USBD_IN_PROGRESS) 906 /* 907 * The transfer has not been 908 * queued. Setting STOP 909 * will make us try again 910 * at the next read. 911 */ 912 sce->state |= UGEN_RA_WB_STOP; 913 } 914 } 915 splx(s); 916 break; 917 } 918 #endif 919 xfer = usbd_alloc_xfer(sc->sc_udev); 920 if (xfer == 0) 921 return (EIO); 922 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 923 error = uiomove(sc->sc_buffer, n, uio); 924 if (error) 925 break; 926 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 927 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 928 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 929 if (err) { 930 if (err == USBD_INTERRUPTED) 931 error = EINTR; 932 else if (err == USBD_TIMEOUT) 933 error = ETIMEDOUT; 934 else 935 error = EIO; 936 break; 937 } 938 } 939 usbd_free_xfer(xfer); 940 break; 941 case UE_INTERRUPT: 942 xfer = usbd_alloc_xfer(sc->sc_udev); 943 if (xfer == 0) 944 return (EIO); 945 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 946 uio->uio_resid)) != 0) { 947 error = uiomove(sc->sc_buffer, n, uio); 948 if (error) 949 break; 950 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 951 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 952 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 953 if (err) { 954 if (err == USBD_INTERRUPTED) 955 error = EINTR; 956 else if (err == USBD_TIMEOUT) 957 error = ETIMEDOUT; 958 else 959 error = EIO; 960 break; 961 } 962 } 963 usbd_free_xfer(xfer); 964 break; 965 default: 966 return (ENXIO); 967 } 968 return (error); 969 } 970 971 int 972 ugenwrite(dev_t dev, struct uio *uio, int flag) 973 { 974 int endpt = UGENENDPOINT(dev); 975 struct ugen_softc *sc; 976 int error; 977 978 USB_GET_SC(ugen, UGENUNIT(dev), sc); 979 980 sc->sc_refcnt++; 981 error = ugen_do_write(sc, endpt, uio, flag); 982 if (--sc->sc_refcnt < 0) 983 usb_detach_wakeup(USBDEV(sc->sc_dev)); 984 return (error); 985 } 986 987 #if defined(__NetBSD__) || defined(__OpenBSD__) 988 int 989 ugen_activate(device_ptr_t self, enum devact act) 990 { 991 struct ugen_softc *sc = device_private(self); 992 993 switch (act) { 994 case DVACT_ACTIVATE: 995 return (EOPNOTSUPP); 996 997 case DVACT_DEACTIVATE: 998 sc->sc_dying = 1; 999 break; 1000 } 1001 return (0); 1002 } 1003 #endif 1004 1005 USB_DETACH(ugen) 1006 { 1007 USB_DETACH_START(ugen, sc); 1008 struct ugen_endpoint *sce; 1009 int i, dir; 1010 int s; 1011 #if defined(__NetBSD__) || defined(__OpenBSD__) 1012 int maj, mn; 1013 1014 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1015 #elif defined(__FreeBSD__) 1016 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1017 #endif 1018 1019 sc->sc_dying = 1; 1020 pmf_device_deregister(self); 1021 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1022 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1023 for (dir = OUT; dir <= IN; dir++) { 1024 sce = &sc->sc_endpoints[i][dir]; 1025 if (sce && sce->pipeh) 1026 usbd_abort_pipe(sce->pipeh); 1027 } 1028 } 1029 1030 s = splusb(); 1031 if (--sc->sc_refcnt >= 0) { 1032 /* Wake everyone */ 1033 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1034 wakeup(&sc->sc_endpoints[i][IN]); 1035 /* Wait for processes to go away. */ 1036 usb_detach_wait(USBDEV(sc->sc_dev)); 1037 } 1038 splx(s); 1039 1040 #if defined(__NetBSD__) || defined(__OpenBSD__) 1041 /* locate the major number */ 1042 #if defined(__NetBSD__) 1043 maj = cdevsw_lookup_major(&ugen_cdevsw); 1044 #elif defined(__OpenBSD__) 1045 for (maj = 0; maj < nchrdev; maj++) 1046 if (cdevsw[maj].d_open == ugenopen) 1047 break; 1048 #endif 1049 1050 /* Nuke the vnodes for any open instances (calls close). */ 1051 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1052 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1053 #elif defined(__FreeBSD__) 1054 /* XXX not implemented yet */ 1055 #endif 1056 1057 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1058 USBDEV(sc->sc_dev)); 1059 1060 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1061 for (dir = OUT; dir <= IN; dir++) { 1062 sce = &sc->sc_endpoints[i][dir]; 1063 seldestroy(&sce->rsel); 1064 } 1065 } 1066 1067 return (0); 1068 } 1069 1070 Static void 1071 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1072 { 1073 struct ugen_endpoint *sce = addr; 1074 /*struct ugen_softc *sc = sce->sc;*/ 1075 u_int32_t count; 1076 u_char *ibuf; 1077 1078 if (status == USBD_CANCELLED) 1079 return; 1080 1081 if (status != USBD_NORMAL_COMPLETION) { 1082 DPRINTF(("ugenintr: status=%d\n", status)); 1083 if (status == USBD_STALLED) 1084 usbd_clear_endpoint_stall_async(sce->pipeh); 1085 return; 1086 } 1087 1088 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1089 ibuf = sce->ibuf; 1090 1091 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1092 xfer, status, count)); 1093 DPRINTFN(5, (" data = %02x %02x %02x\n", 1094 ibuf[0], ibuf[1], ibuf[2])); 1095 1096 (void)b_to_q(ibuf, count, &sce->q); 1097 1098 if (sce->state & UGEN_ASLP) { 1099 sce->state &= ~UGEN_ASLP; 1100 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1101 wakeup(sce); 1102 } 1103 selnotify(&sce->rsel, 0, 0); 1104 } 1105 1106 Static void 1107 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1108 usbd_status status) 1109 { 1110 struct isoreq *req = addr; 1111 struct ugen_endpoint *sce = req->sce; 1112 u_int32_t count, n; 1113 int i, isize; 1114 1115 /* Return if we are aborting. */ 1116 if (status == USBD_CANCELLED) 1117 return; 1118 1119 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1120 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1121 (long)(req - sce->isoreqs), count)); 1122 1123 /* throw away oldest input if the buffer is full */ 1124 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1125 sce->cur += count; 1126 if(sce->cur >= sce->limit) 1127 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1128 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1129 count)); 1130 } 1131 1132 isize = UGETW(sce->edesc->wMaxPacketSize); 1133 for (i = 0; i < UGEN_NISORFRMS; i++) { 1134 u_int32_t actlen = req->sizes[i]; 1135 char const *tbuf = (char const *)req->dmabuf + isize * i; 1136 1137 /* copy data to buffer */ 1138 while (actlen > 0) { 1139 n = min(actlen, sce->limit - sce->fill); 1140 memcpy(sce->fill, tbuf, n); 1141 1142 tbuf += n; 1143 actlen -= n; 1144 sce->fill += n; 1145 if(sce->fill == sce->limit) 1146 sce->fill = sce->ibuf; 1147 } 1148 1149 /* setup size for next transfer */ 1150 req->sizes[i] = isize; 1151 } 1152 1153 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1154 USBD_NO_COPY, ugen_isoc_rintr); 1155 (void)usbd_transfer(xfer); 1156 1157 if (sce->state & UGEN_ASLP) { 1158 sce->state &= ~UGEN_ASLP; 1159 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1160 wakeup(sce); 1161 } 1162 selnotify(&sce->rsel, 0, 0); 1163 } 1164 1165 #ifdef UGEN_BULK_RA_WB 1166 Static void 1167 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1168 usbd_status status) 1169 { 1170 struct ugen_endpoint *sce = addr; 1171 u_int32_t count, n; 1172 char const *tbuf; 1173 usbd_status err; 1174 1175 /* Return if we are aborting. */ 1176 if (status == USBD_CANCELLED) 1177 return; 1178 1179 if (status != USBD_NORMAL_COMPLETION) { 1180 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1181 sce->state |= UGEN_RA_WB_STOP; 1182 if (status == USBD_STALLED) 1183 usbd_clear_endpoint_stall_async(sce->pipeh); 1184 return; 1185 } 1186 1187 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1188 1189 /* Keep track of how much is in the buffer. */ 1190 sce->ra_wb_used += count; 1191 1192 /* Copy data to buffer. */ 1193 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1194 n = min(count, sce->limit - sce->fill); 1195 memcpy(sce->fill, tbuf, n); 1196 tbuf += n; 1197 count -= n; 1198 sce->fill += n; 1199 if (sce->fill == sce->limit) 1200 sce->fill = sce->ibuf; 1201 if (count > 0) { 1202 memcpy(sce->fill, tbuf, count); 1203 sce->fill += count; 1204 } 1205 1206 /* Set up the next request if necessary. */ 1207 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1208 if (n > 0) { 1209 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1210 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1211 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1212 err = usbd_transfer(xfer); 1213 if (err != USBD_IN_PROGRESS) { 1214 printf("usbd_bulkra_intr: error=%d\n", err); 1215 /* 1216 * The transfer has not been queued. Setting STOP 1217 * will make us try again at the next read. 1218 */ 1219 sce->state |= UGEN_RA_WB_STOP; 1220 } 1221 } 1222 else 1223 sce->state |= UGEN_RA_WB_STOP; 1224 1225 if (sce->state & UGEN_ASLP) { 1226 sce->state &= ~UGEN_ASLP; 1227 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1228 wakeup(sce); 1229 } 1230 selnotify(&sce->rsel, 0, 0); 1231 } 1232 1233 Static void 1234 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1235 usbd_status status) 1236 { 1237 struct ugen_endpoint *sce = addr; 1238 u_int32_t count, n; 1239 char *tbuf; 1240 usbd_status err; 1241 1242 /* Return if we are aborting. */ 1243 if (status == USBD_CANCELLED) 1244 return; 1245 1246 if (status != USBD_NORMAL_COMPLETION) { 1247 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1248 sce->state |= UGEN_RA_WB_STOP; 1249 if (status == USBD_STALLED) 1250 usbd_clear_endpoint_stall_async(sce->pipeh); 1251 return; 1252 } 1253 1254 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1255 1256 /* Keep track of how much is in the buffer. */ 1257 sce->ra_wb_used -= count; 1258 1259 /* Update buffer pointers. */ 1260 sce->cur += count; 1261 if (sce->cur >= sce->limit) 1262 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1263 1264 /* Set up next request if necessary. */ 1265 if (sce->ra_wb_used > 0) { 1266 /* copy data from buffer */ 1267 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1268 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1269 n = min(count, sce->limit - sce->cur); 1270 memcpy(tbuf, sce->cur, n); 1271 tbuf += n; 1272 if (count - n > 0) 1273 memcpy(tbuf, sce->ibuf, count - n); 1274 1275 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1276 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1277 err = usbd_transfer(xfer); 1278 if (err != USBD_IN_PROGRESS) { 1279 printf("usbd_bulkwb_intr: error=%d\n", err); 1280 /* 1281 * The transfer has not been queued. Setting STOP 1282 * will make us try again at the next write. 1283 */ 1284 sce->state |= UGEN_RA_WB_STOP; 1285 } 1286 } 1287 else 1288 sce->state |= UGEN_RA_WB_STOP; 1289 1290 if (sce->state & UGEN_ASLP) { 1291 sce->state &= ~UGEN_ASLP; 1292 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1293 wakeup(sce); 1294 } 1295 selnotify(&sce->rsel, 0, 0); 1296 } 1297 #endif 1298 1299 Static usbd_status 1300 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1301 { 1302 usbd_interface_handle iface; 1303 usb_endpoint_descriptor_t *ed; 1304 usbd_status err; 1305 struct ugen_endpoint *sce; 1306 u_int8_t niface, nendpt, endptno, endpt; 1307 int dir; 1308 1309 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1310 1311 err = usbd_interface_count(sc->sc_udev, &niface); 1312 if (err) 1313 return (err); 1314 if (ifaceidx < 0 || ifaceidx >= niface) 1315 return (USBD_INVAL); 1316 1317 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1318 if (err) 1319 return (err); 1320 err = usbd_endpoint_count(iface, &nendpt); 1321 if (err) 1322 return (err); 1323 /* XXX should only do this after setting new altno has succeeded */ 1324 for (endptno = 0; endptno < nendpt; endptno++) { 1325 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1326 endpt = ed->bEndpointAddress; 1327 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1328 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1329 sce->sc = 0; 1330 sce->edesc = 0; 1331 sce->iface = 0; 1332 } 1333 1334 /* change setting */ 1335 err = usbd_set_interface(iface, altno); 1336 if (err) 1337 return (err); 1338 1339 err = usbd_endpoint_count(iface, &nendpt); 1340 if (err) 1341 return (err); 1342 for (endptno = 0; endptno < nendpt; endptno++) { 1343 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1344 KASSERT(ed != NULL); 1345 endpt = ed->bEndpointAddress; 1346 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1347 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1348 sce->sc = sc; 1349 sce->edesc = ed; 1350 sce->iface = iface; 1351 } 1352 return (0); 1353 } 1354 1355 /* Retrieve a complete descriptor for a certain device and index. */ 1356 Static usb_config_descriptor_t * 1357 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1358 { 1359 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1360 int len; 1361 usbd_status err; 1362 1363 if (index == USB_CURRENT_CONFIG_INDEX) { 1364 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1365 len = UGETW(tdesc->wTotalLength); 1366 if (lenp) 1367 *lenp = len; 1368 cdesc = malloc(len, M_TEMP, M_WAITOK); 1369 memcpy(cdesc, tdesc, len); 1370 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1371 } else { 1372 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1373 if (err) 1374 return (0); 1375 len = UGETW(cdescr.wTotalLength); 1376 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1377 if (lenp) 1378 *lenp = len; 1379 cdesc = malloc(len, M_TEMP, M_WAITOK); 1380 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1381 if (err) { 1382 free(cdesc, M_TEMP); 1383 return (0); 1384 } 1385 } 1386 return (cdesc); 1387 } 1388 1389 Static int 1390 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1391 { 1392 usbd_interface_handle iface; 1393 usbd_status err; 1394 1395 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1396 if (err) 1397 return (-1); 1398 return (usbd_get_interface_altindex(iface)); 1399 } 1400 1401 Static int 1402 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1403 void *addr, int flag, struct lwp *l) 1404 { 1405 struct ugen_endpoint *sce; 1406 usbd_status err; 1407 usbd_interface_handle iface; 1408 struct usb_config_desc *cd; 1409 usb_config_descriptor_t *cdesc; 1410 struct usb_interface_desc *id; 1411 usb_interface_descriptor_t *idesc; 1412 struct usb_endpoint_desc *ed; 1413 usb_endpoint_descriptor_t *edesc; 1414 struct usb_alt_interface *ai; 1415 struct usb_string_desc *si; 1416 u_int8_t conf, alt; 1417 1418 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1419 if (sc->sc_dying) 1420 return (EIO); 1421 1422 switch (cmd) { 1423 case FIONBIO: 1424 /* All handled in the upper FS layer. */ 1425 return (0); 1426 case USB_SET_SHORT_XFER: 1427 if (endpt == USB_CONTROL_ENDPOINT) 1428 return (EINVAL); 1429 /* This flag only affects read */ 1430 sce = &sc->sc_endpoints[endpt][IN]; 1431 if (sce == NULL || sce->pipeh == NULL) 1432 return (EINVAL); 1433 if (*(int *)addr) 1434 sce->state |= UGEN_SHORT_OK; 1435 else 1436 sce->state &= ~UGEN_SHORT_OK; 1437 return (0); 1438 case USB_SET_TIMEOUT: 1439 sce = &sc->sc_endpoints[endpt][IN]; 1440 if (sce == NULL 1441 /* XXX this shouldn't happen, but the distinction between 1442 input and output pipes isn't clear enough. 1443 || sce->pipeh == NULL */ 1444 ) 1445 return (EINVAL); 1446 sce->timeout = *(int *)addr; 1447 return (0); 1448 case USB_SET_BULK_RA: 1449 #ifdef UGEN_BULK_RA_WB 1450 if (endpt == USB_CONTROL_ENDPOINT) 1451 return (EINVAL); 1452 sce = &sc->sc_endpoints[endpt][IN]; 1453 if (sce == NULL || sce->pipeh == NULL) 1454 return (EINVAL); 1455 edesc = sce->edesc; 1456 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1457 return (EINVAL); 1458 1459 if (*(int *)addr) { 1460 /* Only turn RA on if it's currently off. */ 1461 if (sce->state & UGEN_BULK_RA) 1462 return (0); 1463 1464 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1465 /* shouldn't happen */ 1466 return (EINVAL); 1467 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1468 if (sce->ra_wb_xfer == NULL) 1469 return (ENOMEM); 1470 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1471 /* 1472 * Set up a dmabuf because we reuse the xfer with 1473 * the same (max) request length like isoc. 1474 */ 1475 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1476 sce->ra_wb_xferlen) == 0) { 1477 usbd_free_xfer(sce->ra_wb_xfer); 1478 return (ENOMEM); 1479 } 1480 sce->ibuf = malloc(sce->ra_wb_bufsize, 1481 M_USBDEV, M_WAITOK); 1482 sce->fill = sce->cur = sce->ibuf; 1483 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1484 sce->ra_wb_used = 0; 1485 sce->state |= UGEN_BULK_RA; 1486 sce->state &= ~UGEN_RA_WB_STOP; 1487 /* Now start reading. */ 1488 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1489 NULL, 1490 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1491 USBD_NO_COPY, USBD_NO_TIMEOUT, 1492 ugen_bulkra_intr); 1493 err = usbd_transfer(sce->ra_wb_xfer); 1494 if (err != USBD_IN_PROGRESS) { 1495 sce->state &= ~UGEN_BULK_RA; 1496 free(sce->ibuf, M_USBDEV); 1497 sce->ibuf = NULL; 1498 usbd_free_xfer(sce->ra_wb_xfer); 1499 return (EIO); 1500 } 1501 } else { 1502 /* Only turn RA off if it's currently on. */ 1503 if (!(sce->state & UGEN_BULK_RA)) 1504 return (0); 1505 1506 sce->state &= ~UGEN_BULK_RA; 1507 usbd_abort_pipe(sce->pipeh); 1508 usbd_free_xfer(sce->ra_wb_xfer); 1509 /* 1510 * XXX Discard whatever's in the buffer, but we 1511 * should keep it around and drain the buffer 1512 * instead. 1513 */ 1514 free(sce->ibuf, M_USBDEV); 1515 sce->ibuf = NULL; 1516 } 1517 return (0); 1518 #else 1519 return (EOPNOTSUPP); 1520 #endif 1521 case USB_SET_BULK_WB: 1522 #ifdef UGEN_BULK_RA_WB 1523 if (endpt == USB_CONTROL_ENDPOINT) 1524 return (EINVAL); 1525 sce = &sc->sc_endpoints[endpt][OUT]; 1526 if (sce == NULL || sce->pipeh == NULL) 1527 return (EINVAL); 1528 edesc = sce->edesc; 1529 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1530 return (EINVAL); 1531 1532 if (*(int *)addr) { 1533 /* Only turn WB on if it's currently off. */ 1534 if (sce->state & UGEN_BULK_WB) 1535 return (0); 1536 1537 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1538 /* shouldn't happen */ 1539 return (EINVAL); 1540 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1541 if (sce->ra_wb_xfer == NULL) 1542 return (ENOMEM); 1543 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1544 /* 1545 * Set up a dmabuf because we reuse the xfer with 1546 * the same (max) request length like isoc. 1547 */ 1548 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1549 sce->ra_wb_xferlen) == 0) { 1550 usbd_free_xfer(sce->ra_wb_xfer); 1551 return (ENOMEM); 1552 } 1553 sce->ibuf = malloc(sce->ra_wb_bufsize, 1554 M_USBDEV, M_WAITOK); 1555 sce->fill = sce->cur = sce->ibuf; 1556 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1557 sce->ra_wb_used = 0; 1558 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1559 } else { 1560 /* Only turn WB off if it's currently on. */ 1561 if (!(sce->state & UGEN_BULK_WB)) 1562 return (0); 1563 1564 sce->state &= ~UGEN_BULK_WB; 1565 /* 1566 * XXX Discard whatever's in the buffer, but we 1567 * should keep it around and keep writing to 1568 * drain the buffer instead. 1569 */ 1570 usbd_abort_pipe(sce->pipeh); 1571 usbd_free_xfer(sce->ra_wb_xfer); 1572 free(sce->ibuf, M_USBDEV); 1573 sce->ibuf = NULL; 1574 } 1575 return (0); 1576 #else 1577 return (EOPNOTSUPP); 1578 #endif 1579 case USB_SET_BULK_RA_OPT: 1580 case USB_SET_BULK_WB_OPT: 1581 #ifdef UGEN_BULK_RA_WB 1582 { 1583 struct usb_bulk_ra_wb_opt *opt; 1584 1585 if (endpt == USB_CONTROL_ENDPOINT) 1586 return (EINVAL); 1587 opt = (struct usb_bulk_ra_wb_opt *)addr; 1588 if (cmd == USB_SET_BULK_RA_OPT) 1589 sce = &sc->sc_endpoints[endpt][IN]; 1590 else 1591 sce = &sc->sc_endpoints[endpt][OUT]; 1592 if (sce == NULL || sce->pipeh == NULL) 1593 return (EINVAL); 1594 if (opt->ra_wb_buffer_size < 1 || 1595 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1596 opt->ra_wb_request_size < 1 || 1597 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1598 return (EINVAL); 1599 /* 1600 * XXX These changes do not take effect until the 1601 * next time RA/WB mode is enabled but they ought to 1602 * take effect immediately. 1603 */ 1604 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1605 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1606 return (0); 1607 } 1608 #else 1609 return (EOPNOTSUPP); 1610 #endif 1611 default: 1612 break; 1613 } 1614 1615 if (endpt != USB_CONTROL_ENDPOINT) 1616 return (EINVAL); 1617 1618 switch (cmd) { 1619 #ifdef UGEN_DEBUG 1620 case USB_SETDEBUG: 1621 ugendebug = *(int *)addr; 1622 break; 1623 #endif 1624 case USB_GET_CONFIG: 1625 err = usbd_get_config(sc->sc_udev, &conf); 1626 if (err) 1627 return (EIO); 1628 *(int *)addr = conf; 1629 break; 1630 case USB_SET_CONFIG: 1631 if (!(flag & FWRITE)) 1632 return (EPERM); 1633 err = ugen_set_config(sc, *(int *)addr); 1634 switch (err) { 1635 case USBD_NORMAL_COMPLETION: 1636 break; 1637 case USBD_IN_USE: 1638 return (EBUSY); 1639 default: 1640 return (EIO); 1641 } 1642 break; 1643 case USB_GET_ALTINTERFACE: 1644 ai = (struct usb_alt_interface *)addr; 1645 err = usbd_device2interface_handle(sc->sc_udev, 1646 ai->uai_interface_index, &iface); 1647 if (err) 1648 return (EINVAL); 1649 idesc = usbd_get_interface_descriptor(iface); 1650 if (idesc == NULL) 1651 return (EIO); 1652 ai->uai_alt_no = idesc->bAlternateSetting; 1653 break; 1654 case USB_SET_ALTINTERFACE: 1655 if (!(flag & FWRITE)) 1656 return (EPERM); 1657 ai = (struct usb_alt_interface *)addr; 1658 err = usbd_device2interface_handle(sc->sc_udev, 1659 ai->uai_interface_index, &iface); 1660 if (err) 1661 return (EINVAL); 1662 err = ugen_set_interface(sc, ai->uai_interface_index, 1663 ai->uai_alt_no); 1664 if (err) 1665 return (EINVAL); 1666 break; 1667 case USB_GET_NO_ALT: 1668 ai = (struct usb_alt_interface *)addr; 1669 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1670 if (cdesc == NULL) 1671 return (EINVAL); 1672 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1673 if (idesc == NULL) { 1674 free(cdesc, M_TEMP); 1675 return (EINVAL); 1676 } 1677 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1678 idesc->bInterfaceNumber); 1679 free(cdesc, M_TEMP); 1680 break; 1681 case USB_GET_DEVICE_DESC: 1682 *(usb_device_descriptor_t *)addr = 1683 *usbd_get_device_descriptor(sc->sc_udev); 1684 break; 1685 case USB_GET_CONFIG_DESC: 1686 cd = (struct usb_config_desc *)addr; 1687 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1688 if (cdesc == NULL) 1689 return (EINVAL); 1690 cd->ucd_desc = *cdesc; 1691 free(cdesc, M_TEMP); 1692 break; 1693 case USB_GET_INTERFACE_DESC: 1694 id = (struct usb_interface_desc *)addr; 1695 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1696 if (cdesc == NULL) 1697 return (EINVAL); 1698 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1699 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1700 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1701 else 1702 alt = id->uid_alt_index; 1703 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1704 if (idesc == NULL) { 1705 free(cdesc, M_TEMP); 1706 return (EINVAL); 1707 } 1708 id->uid_desc = *idesc; 1709 free(cdesc, M_TEMP); 1710 break; 1711 case USB_GET_ENDPOINT_DESC: 1712 ed = (struct usb_endpoint_desc *)addr; 1713 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1714 if (cdesc == NULL) 1715 return (EINVAL); 1716 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1717 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1718 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1719 else 1720 alt = ed->ued_alt_index; 1721 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1722 alt, ed->ued_endpoint_index); 1723 if (edesc == NULL) { 1724 free(cdesc, M_TEMP); 1725 return (EINVAL); 1726 } 1727 ed->ued_desc = *edesc; 1728 free(cdesc, M_TEMP); 1729 break; 1730 case USB_GET_FULL_DESC: 1731 { 1732 int len; 1733 struct iovec iov; 1734 struct uio uio; 1735 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1736 int error; 1737 1738 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1739 if (cdesc == NULL) 1740 return (EINVAL); 1741 if (len > fd->ufd_size) 1742 len = fd->ufd_size; 1743 iov.iov_base = (void *)fd->ufd_data; 1744 iov.iov_len = len; 1745 uio.uio_iov = &iov; 1746 uio.uio_iovcnt = 1; 1747 uio.uio_resid = len; 1748 uio.uio_offset = 0; 1749 uio.uio_rw = UIO_READ; 1750 uio.uio_vmspace = l->l_proc->p_vmspace; 1751 error = uiomove((void *)cdesc, len, &uio); 1752 free(cdesc, M_TEMP); 1753 return (error); 1754 } 1755 case USB_GET_STRING_DESC: { 1756 int len; 1757 si = (struct usb_string_desc *)addr; 1758 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1759 si->usd_language_id, &si->usd_desc, &len); 1760 if (err) 1761 return (EINVAL); 1762 break; 1763 } 1764 case USB_DO_REQUEST: 1765 { 1766 struct usb_ctl_request *ur = (void *)addr; 1767 int len = UGETW(ur->ucr_request.wLength); 1768 struct iovec iov; 1769 struct uio uio; 1770 void *ptr = 0; 1771 usbd_status xerr; 1772 int error = 0; 1773 1774 if (!(flag & FWRITE)) 1775 return (EPERM); 1776 /* Avoid requests that would damage the bus integrity. */ 1777 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1778 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1779 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1780 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1781 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1782 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1783 return (EINVAL); 1784 1785 if (len < 0 || len > 32767) 1786 return (EINVAL); 1787 if (len != 0) { 1788 iov.iov_base = (void *)ur->ucr_data; 1789 iov.iov_len = len; 1790 uio.uio_iov = &iov; 1791 uio.uio_iovcnt = 1; 1792 uio.uio_resid = len; 1793 uio.uio_offset = 0; 1794 uio.uio_rw = 1795 ur->ucr_request.bmRequestType & UT_READ ? 1796 UIO_READ : UIO_WRITE; 1797 uio.uio_vmspace = l->l_proc->p_vmspace; 1798 ptr = malloc(len, M_TEMP, M_WAITOK); 1799 if (uio.uio_rw == UIO_WRITE) { 1800 error = uiomove(ptr, len, &uio); 1801 if (error) 1802 goto ret; 1803 } 1804 } 1805 sce = &sc->sc_endpoints[endpt][IN]; 1806 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1807 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1808 if (xerr) { 1809 error = EIO; 1810 goto ret; 1811 } 1812 if (len != 0) { 1813 if (uio.uio_rw == UIO_READ) { 1814 error = uiomove(ptr, len, &uio); 1815 if (error) 1816 goto ret; 1817 } 1818 } 1819 ret: 1820 if (ptr) 1821 free(ptr, M_TEMP); 1822 return (error); 1823 } 1824 case USB_GET_DEVICEINFO: 1825 usbd_fill_deviceinfo(sc->sc_udev, 1826 (struct usb_device_info *)addr, 0); 1827 break; 1828 #ifdef COMPAT_30 1829 case USB_GET_DEVICEINFO_OLD: 1830 usbd_fill_deviceinfo_old(sc->sc_udev, 1831 (struct usb_device_info_old *)addr, 0); 1832 1833 break; 1834 #endif 1835 default: 1836 return (EINVAL); 1837 } 1838 return (0); 1839 } 1840 1841 int 1842 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1843 { 1844 int endpt = UGENENDPOINT(dev); 1845 struct ugen_softc *sc; 1846 int error; 1847 1848 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1849 1850 sc->sc_refcnt++; 1851 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1852 if (--sc->sc_refcnt < 0) 1853 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1854 return (error); 1855 } 1856 1857 int 1858 ugenpoll(dev_t dev, int events, struct lwp *l) 1859 { 1860 struct ugen_softc *sc; 1861 struct ugen_endpoint *sce_in, *sce_out; 1862 int revents = 0; 1863 int s; 1864 1865 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1866 1867 if (sc->sc_dying) 1868 return (POLLHUP); 1869 1870 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1871 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1872 if (sce_in == NULL && sce_out == NULL) 1873 return (POLLERR); 1874 #ifdef DIAGNOSTIC 1875 if (!sce_in->edesc && !sce_out->edesc) { 1876 printf("ugenpoll: no edesc\n"); 1877 return (POLLERR); 1878 } 1879 /* It's possible to have only one pipe open. */ 1880 if (!sce_in->pipeh && !sce_out->pipeh) { 1881 printf("ugenpoll: no pipe\n"); 1882 return (POLLERR); 1883 } 1884 #endif 1885 s = splusb(); 1886 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1887 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1888 case UE_INTERRUPT: 1889 if (sce_in->q.c_cc > 0) 1890 revents |= events & (POLLIN | POLLRDNORM); 1891 else 1892 selrecord(l, &sce_in->rsel); 1893 break; 1894 case UE_ISOCHRONOUS: 1895 if (sce_in->cur != sce_in->fill) 1896 revents |= events & (POLLIN | POLLRDNORM); 1897 else 1898 selrecord(l, &sce_in->rsel); 1899 break; 1900 case UE_BULK: 1901 #ifdef UGEN_BULK_RA_WB 1902 if (sce_in->state & UGEN_BULK_RA) { 1903 if (sce_in->ra_wb_used > 0) 1904 revents |= events & 1905 (POLLIN | POLLRDNORM); 1906 else 1907 selrecord(l, &sce_in->rsel); 1908 break; 1909 } 1910 #endif 1911 /* 1912 * We have no easy way of determining if a read will 1913 * yield any data or a write will happen. 1914 * Pretend they will. 1915 */ 1916 revents |= events & (POLLIN | POLLRDNORM); 1917 break; 1918 default: 1919 break; 1920 } 1921 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1922 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1923 case UE_INTERRUPT: 1924 case UE_ISOCHRONOUS: 1925 /* XXX unimplemented */ 1926 break; 1927 case UE_BULK: 1928 #ifdef UGEN_BULK_RA_WB 1929 if (sce_out->state & UGEN_BULK_WB) { 1930 if (sce_out->ra_wb_used < 1931 sce_out->limit - sce_out->ibuf) 1932 revents |= events & 1933 (POLLOUT | POLLWRNORM); 1934 else 1935 selrecord(l, &sce_out->rsel); 1936 break; 1937 } 1938 #endif 1939 /* 1940 * We have no easy way of determining if a read will 1941 * yield any data or a write will happen. 1942 * Pretend they will. 1943 */ 1944 revents |= events & (POLLOUT | POLLWRNORM); 1945 break; 1946 default: 1947 break; 1948 } 1949 1950 1951 splx(s); 1952 return (revents); 1953 } 1954 1955 static void 1956 filt_ugenrdetach(struct knote *kn) 1957 { 1958 struct ugen_endpoint *sce = kn->kn_hook; 1959 int s; 1960 1961 s = splusb(); 1962 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1963 splx(s); 1964 } 1965 1966 static int 1967 filt_ugenread_intr(struct knote *kn, long hint) 1968 { 1969 struct ugen_endpoint *sce = kn->kn_hook; 1970 1971 kn->kn_data = sce->q.c_cc; 1972 return (kn->kn_data > 0); 1973 } 1974 1975 static int 1976 filt_ugenread_isoc(struct knote *kn, long hint) 1977 { 1978 struct ugen_endpoint *sce = kn->kn_hook; 1979 1980 if (sce->cur == sce->fill) 1981 return (0); 1982 1983 if (sce->cur < sce->fill) 1984 kn->kn_data = sce->fill - sce->cur; 1985 else 1986 kn->kn_data = (sce->limit - sce->cur) + 1987 (sce->fill - sce->ibuf); 1988 1989 return (1); 1990 } 1991 1992 #ifdef UGEN_BULK_RA_WB 1993 static int 1994 filt_ugenread_bulk(struct knote *kn, long hint) 1995 { 1996 struct ugen_endpoint *sce = kn->kn_hook; 1997 1998 if (!(sce->state & UGEN_BULK_RA)) 1999 /* 2000 * We have no easy way of determining if a read will 2001 * yield any data or a write will happen. 2002 * So, emulate "seltrue". 2003 */ 2004 return (filt_seltrue(kn, hint)); 2005 2006 if (sce->ra_wb_used == 0) 2007 return (0); 2008 2009 kn->kn_data = sce->ra_wb_used; 2010 2011 return (1); 2012 } 2013 2014 static int 2015 filt_ugenwrite_bulk(struct knote *kn, long hint) 2016 { 2017 struct ugen_endpoint *sce = kn->kn_hook; 2018 2019 if (!(sce->state & UGEN_BULK_WB)) 2020 /* 2021 * We have no easy way of determining if a read will 2022 * yield any data or a write will happen. 2023 * So, emulate "seltrue". 2024 */ 2025 return (filt_seltrue(kn, hint)); 2026 2027 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2028 return (0); 2029 2030 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2031 2032 return (1); 2033 } 2034 #endif 2035 2036 static const struct filterops ugenread_intr_filtops = 2037 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2038 2039 static const struct filterops ugenread_isoc_filtops = 2040 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2041 2042 #ifdef UGEN_BULK_RA_WB 2043 static const struct filterops ugenread_bulk_filtops = 2044 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2045 2046 static const struct filterops ugenwrite_bulk_filtops = 2047 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2048 #else 2049 static const struct filterops ugen_seltrue_filtops = 2050 { 1, NULL, filt_ugenrdetach, filt_seltrue }; 2051 #endif 2052 2053 int 2054 ugenkqfilter(dev_t dev, struct knote *kn) 2055 { 2056 struct ugen_softc *sc; 2057 struct ugen_endpoint *sce; 2058 struct klist *klist; 2059 int s; 2060 2061 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2062 2063 if (sc->sc_dying) 2064 return (ENXIO); 2065 2066 switch (kn->kn_filter) { 2067 case EVFILT_READ: 2068 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2069 if (sce == NULL) 2070 return (EINVAL); 2071 2072 klist = &sce->rsel.sel_klist; 2073 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2074 case UE_INTERRUPT: 2075 kn->kn_fop = &ugenread_intr_filtops; 2076 break; 2077 case UE_ISOCHRONOUS: 2078 kn->kn_fop = &ugenread_isoc_filtops; 2079 break; 2080 case UE_BULK: 2081 #ifdef UGEN_BULK_RA_WB 2082 kn->kn_fop = &ugenread_bulk_filtops; 2083 break; 2084 #else 2085 /* 2086 * We have no easy way of determining if a read will 2087 * yield any data or a write will happen. 2088 * So, emulate "seltrue". 2089 */ 2090 kn->kn_fop = &ugen_seltrue_filtops; 2091 #endif 2092 break; 2093 default: 2094 return (EINVAL); 2095 } 2096 break; 2097 2098 case EVFILT_WRITE: 2099 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2100 if (sce == NULL) 2101 return (EINVAL); 2102 2103 klist = &sce->rsel.sel_klist; 2104 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2105 case UE_INTERRUPT: 2106 case UE_ISOCHRONOUS: 2107 /* XXX poll doesn't support this */ 2108 return (EINVAL); 2109 2110 case UE_BULK: 2111 #ifdef UGEN_BULK_RA_WB 2112 kn->kn_fop = &ugenwrite_bulk_filtops; 2113 #else 2114 /* 2115 * We have no easy way of determining if a read will 2116 * yield any data or a write will happen. 2117 * So, emulate "seltrue". 2118 */ 2119 kn->kn_fop = &ugen_seltrue_filtops; 2120 #endif 2121 break; 2122 default: 2123 return (EINVAL); 2124 } 2125 break; 2126 2127 default: 2128 return (EINVAL); 2129 } 2130 2131 kn->kn_hook = sce; 2132 2133 s = splusb(); 2134 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2135 splx(s); 2136 2137 return (0); 2138 } 2139 2140 #if defined(__FreeBSD__) 2141 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2142 #endif 2143
Indexes created Thu Sep 25 16:09:42 GMT 2025