ugen.c revision 1.106
1 /* $NetBSD: ugen.c,v 1.106 2009/12/06 21:40:31 dyoung 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 1.106 2009/12/06 21:40:31 dyoung 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 /* toggle to control attach priority. -1 means "let autoconf decide" */ 209 int ugen_override = -1; 210 211 USB_MATCH(ugen) 212 { 213 USB_MATCH_START(ugen, uaa); 214 int override; 215 216 if (ugen_override != -1) 217 override = ugen_override; 218 else 219 override = match->cf_flags & 1; 220 221 if (override) 222 return (UMATCH_HIGHEST); 223 else if (uaa->usegeneric) 224 return (UMATCH_GENERIC); 225 else 226 return (UMATCH_NONE); 227 } 228 229 USB_ATTACH(ugen) 230 { 231 USB_ATTACH_START(ugen, sc, uaa); 232 usbd_device_handle udev; 233 char *devinfop; 234 usbd_status err; 235 int i, dir, conf; 236 237 aprint_naive("\n"); 238 aprint_normal("\n"); 239 240 devinfop = usbd_devinfo_alloc(uaa->device, 0); 241 aprint_normal_dev(self, "%s\n", devinfop); 242 usbd_devinfo_free(devinfop); 243 244 sc->sc_dev = self; 245 sc->sc_udev = udev = uaa->device; 246 247 /* First set configuration index 0, the default one for ugen. */ 248 err = usbd_set_config_index(udev, 0, 0); 249 if (err) { 250 aprint_error_dev(self, 251 "setting configuration index 0 failed\n"); 252 sc->sc_dying = 1; 253 USB_ATTACH_ERROR_RETURN; 254 } 255 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 256 257 /* Set up all the local state for this configuration. */ 258 err = ugen_set_config(sc, conf); 259 if (err) { 260 aprint_error_dev(self, "setting configuration %d failed\n", 261 conf); 262 sc->sc_dying = 1; 263 USB_ATTACH_ERROR_RETURN; 264 } 265 266 #ifdef __FreeBSD__ 267 { 268 static int global_init_done = 0; 269 if (!global_init_done) { 270 cdevsw_add(&ugen_cdevsw); 271 global_init_done = 1; 272 } 273 } 274 #endif 275 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 276 for (dir = OUT; dir <= IN; dir++) { 277 struct ugen_endpoint *sce; 278 279 sce = &sc->sc_endpoints[i][dir]; 280 selinit(&sce->rsel); 281 } 282 } 283 284 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 285 USBDEV(sc->sc_dev)); 286 287 if (!pmf_device_register(self, NULL, NULL)) 288 aprint_error_dev(self, "couldn't establish power handler\n"); 289 290 USB_ATTACH_SUCCESS_RETURN; 291 } 292 293 Static int 294 ugen_set_config(struct ugen_softc *sc, int configno) 295 { 296 usbd_device_handle dev = sc->sc_udev; 297 usb_config_descriptor_t *cdesc; 298 usbd_interface_handle iface; 299 usb_endpoint_descriptor_t *ed; 300 struct ugen_endpoint *sce; 301 u_int8_t niface, nendpt; 302 int ifaceno, endptno, endpt; 303 usbd_status err; 304 int dir; 305 306 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 307 USBDEVNAME(sc->sc_dev), configno, sc)); 308 309 /* 310 * We start at 1, not 0, because we don't care whether the 311 * control endpoint is open or not. It is always present. 312 */ 313 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 314 if (sc->sc_is_open[endptno]) { 315 DPRINTFN(1, 316 ("ugen_set_config: %s - endpoint %d is open\n", 317 USBDEVNAME(sc->sc_dev), endptno)); 318 return (USBD_IN_USE); 319 } 320 321 /* Avoid setting the current value. */ 322 cdesc = usbd_get_config_descriptor(dev); 323 if (!cdesc || cdesc->bConfigurationValue != configno) { 324 err = usbd_set_config_no(dev, configno, 1); 325 if (err) 326 return (err); 327 } 328 329 err = usbd_interface_count(dev, &niface); 330 if (err) 331 return (err); 332 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 333 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 334 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 335 err = usbd_device2interface_handle(dev, ifaceno, &iface); 336 if (err) 337 return (err); 338 err = usbd_endpoint_count(iface, &nendpt); 339 if (err) 340 return (err); 341 for (endptno = 0; endptno < nendpt; endptno++) { 342 ed = usbd_interface2endpoint_descriptor(iface,endptno); 343 KASSERT(ed != NULL); 344 endpt = ed->bEndpointAddress; 345 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 346 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 347 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 348 "(%d,%d), sce=%p\n", 349 endptno, endpt, UE_GET_ADDR(endpt), 350 UE_GET_DIR(endpt), sce)); 351 sce->sc = sc; 352 sce->edesc = ed; 353 sce->iface = iface; 354 } 355 } 356 return (USBD_NORMAL_COMPLETION); 357 } 358 359 int 360 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 361 { 362 struct ugen_softc *sc; 363 int unit = UGENUNIT(dev); 364 int endpt = UGENENDPOINT(dev); 365 usb_endpoint_descriptor_t *edesc; 366 struct ugen_endpoint *sce; 367 int dir, isize; 368 usbd_status err; 369 usbd_xfer_handle xfer; 370 void *tbuf; 371 int i, j; 372 373 USB_GET_SC_OPEN(ugen, unit, sc); 374 375 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 376 flag, mode, unit, endpt)); 377 378 if (sc == NULL || sc->sc_dying) 379 return (ENXIO); 380 381 /* The control endpoint allows multiple opens. */ 382 if (endpt == USB_CONTROL_ENDPOINT) { 383 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 384 return (0); 385 } 386 387 if (sc->sc_is_open[endpt]) 388 return (EBUSY); 389 390 /* Make sure there are pipes for all directions. */ 391 for (dir = OUT; dir <= IN; dir++) { 392 if (flag & (dir == OUT ? FWRITE : FREAD)) { 393 sce = &sc->sc_endpoints[endpt][dir]; 394 if (sce == 0 || sce->edesc == 0) 395 return (ENXIO); 396 } 397 } 398 399 /* Actually open the pipes. */ 400 /* XXX Should back out properly if it fails. */ 401 for (dir = OUT; dir <= IN; dir++) { 402 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 403 continue; 404 sce = &sc->sc_endpoints[endpt][dir]; 405 sce->state = 0; 406 sce->timeout = USBD_NO_TIMEOUT; 407 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 408 sc, endpt, dir, sce)); 409 edesc = sce->edesc; 410 switch (edesc->bmAttributes & UE_XFERTYPE) { 411 case UE_INTERRUPT: 412 if (dir == OUT) { 413 err = usbd_open_pipe(sce->iface, 414 edesc->bEndpointAddress, 0, &sce->pipeh); 415 if (err) 416 return (EIO); 417 break; 418 } 419 isize = UGETW(edesc->wMaxPacketSize); 420 if (isize == 0) /* shouldn't happen */ 421 return (EINVAL); 422 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 423 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 424 endpt, isize)); 425 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 426 return (ENOMEM); 427 err = usbd_open_pipe_intr(sce->iface, 428 edesc->bEndpointAddress, 429 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 430 sce->ibuf, isize, ugenintr, 431 USBD_DEFAULT_INTERVAL); 432 if (err) { 433 free(sce->ibuf, M_USBDEV); 434 clfree(&sce->q); 435 return (EIO); 436 } 437 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 438 break; 439 case UE_BULK: 440 err = usbd_open_pipe(sce->iface, 441 edesc->bEndpointAddress, 0, &sce->pipeh); 442 if (err) 443 return (EIO); 444 #ifdef UGEN_BULK_RA_WB 445 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 446 /* 447 * Use request size for non-RA/WB transfers 448 * as the default. 449 */ 450 sce->ra_wb_reqsize = UGEN_BBSIZE; 451 #endif 452 break; 453 case UE_ISOCHRONOUS: 454 if (dir == OUT) 455 return (EINVAL); 456 isize = UGETW(edesc->wMaxPacketSize); 457 if (isize == 0) /* shouldn't happen */ 458 return (EINVAL); 459 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 460 M_USBDEV, M_WAITOK); 461 sce->cur = sce->fill = sce->ibuf; 462 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 463 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 464 endpt, isize)); 465 err = usbd_open_pipe(sce->iface, 466 edesc->bEndpointAddress, 0, &sce->pipeh); 467 if (err) { 468 free(sce->ibuf, M_USBDEV); 469 return (EIO); 470 } 471 for(i = 0; i < UGEN_NISOREQS; ++i) { 472 sce->isoreqs[i].sce = sce; 473 xfer = usbd_alloc_xfer(sc->sc_udev); 474 if (xfer == 0) 475 goto bad; 476 sce->isoreqs[i].xfer = xfer; 477 tbuf = usbd_alloc_buffer 478 (xfer, isize * UGEN_NISORFRMS); 479 if (tbuf == 0) { 480 i++; 481 goto bad; 482 } 483 sce->isoreqs[i].dmabuf = tbuf; 484 for(j = 0; j < UGEN_NISORFRMS; ++j) 485 sce->isoreqs[i].sizes[j] = isize; 486 usbd_setup_isoc_xfer 487 (xfer, sce->pipeh, &sce->isoreqs[i], 488 sce->isoreqs[i].sizes, 489 UGEN_NISORFRMS, USBD_NO_COPY, 490 ugen_isoc_rintr); 491 (void)usbd_transfer(xfer); 492 } 493 DPRINTFN(5, ("ugenopen: isoc open done\n")); 494 break; 495 bad: 496 while (--i >= 0) /* implicit buffer free */ 497 usbd_free_xfer(sce->isoreqs[i].xfer); 498 return (ENOMEM); 499 case UE_CONTROL: 500 sce->timeout = USBD_DEFAULT_TIMEOUT; 501 return (EINVAL); 502 } 503 } 504 sc->sc_is_open[endpt] = 1; 505 return (0); 506 } 507 508 int 509 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 510 { 511 int endpt = UGENENDPOINT(dev); 512 struct ugen_softc *sc; 513 struct ugen_endpoint *sce; 514 int dir; 515 int i; 516 517 USB_GET_SC(ugen, UGENUNIT(dev), sc); 518 519 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 520 flag, mode, UGENUNIT(dev), endpt)); 521 522 #ifdef DIAGNOSTIC 523 if (!sc->sc_is_open[endpt]) { 524 printf("ugenclose: not open\n"); 525 return (EINVAL); 526 } 527 #endif 528 529 if (endpt == USB_CONTROL_ENDPOINT) { 530 DPRINTFN(5, ("ugenclose: close control\n")); 531 sc->sc_is_open[endpt] = 0; 532 return (0); 533 } 534 535 for (dir = OUT; dir <= IN; dir++) { 536 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 537 continue; 538 sce = &sc->sc_endpoints[endpt][dir]; 539 if (sce == NULL || sce->pipeh == NULL) 540 continue; 541 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 542 endpt, dir, sce)); 543 544 usbd_abort_pipe(sce->pipeh); 545 usbd_close_pipe(sce->pipeh); 546 sce->pipeh = NULL; 547 548 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 549 case UE_INTERRUPT: 550 ndflush(&sce->q, sce->q.c_cc); 551 clfree(&sce->q); 552 break; 553 case UE_ISOCHRONOUS: 554 for (i = 0; i < UGEN_NISOREQS; ++i) 555 usbd_free_xfer(sce->isoreqs[i].xfer); 556 break; 557 #ifdef UGEN_BULK_RA_WB 558 case UE_BULK: 559 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 560 /* ibuf freed below */ 561 usbd_free_xfer(sce->ra_wb_xfer); 562 break; 563 #endif 564 default: 565 break; 566 } 567 568 if (sce->ibuf != NULL) { 569 free(sce->ibuf, M_USBDEV); 570 sce->ibuf = NULL; 571 clfree(&sce->q); 572 } 573 } 574 sc->sc_is_open[endpt] = 0; 575 576 return (0); 577 } 578 579 Static int 580 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 581 { 582 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 583 u_int32_t n, tn; 584 usbd_xfer_handle xfer; 585 usbd_status err; 586 int s; 587 int error = 0; 588 589 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 590 591 if (sc->sc_dying) 592 return (EIO); 593 594 if (endpt == USB_CONTROL_ENDPOINT) 595 return (ENODEV); 596 597 #ifdef DIAGNOSTIC 598 if (sce->edesc == NULL) { 599 printf("ugenread: no edesc\n"); 600 return (EIO); 601 } 602 if (sce->pipeh == NULL) { 603 printf("ugenread: no pipe\n"); 604 return (EIO); 605 } 606 #endif 607 608 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 609 case UE_INTERRUPT: 610 /* Block until activity occurred. */ 611 s = splusb(); 612 while (sce->q.c_cc == 0) { 613 if (flag & IO_NDELAY) { 614 splx(s); 615 return (EWOULDBLOCK); 616 } 617 sce->state |= UGEN_ASLP; 618 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 619 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 620 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 621 if (sc->sc_dying) 622 error = EIO; 623 if (error) { 624 sce->state &= ~UGEN_ASLP; 625 break; 626 } 627 } 628 splx(s); 629 630 /* Transfer as many chunks as possible. */ 631 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 632 n = min(sce->q.c_cc, uio->uio_resid); 633 if (n > sizeof(sc->sc_buffer)) 634 n = sizeof(sc->sc_buffer); 635 636 /* Remove a small chunk from the input queue. */ 637 q_to_b(&sce->q, sc->sc_buffer, n); 638 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 639 640 /* Copy the data to the user process. */ 641 error = uiomove(sc->sc_buffer, n, uio); 642 if (error) 643 break; 644 } 645 break; 646 case UE_BULK: 647 #ifdef UGEN_BULK_RA_WB 648 if (sce->state & UGEN_BULK_RA) { 649 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 650 uio->uio_resid, sce->ra_wb_used)); 651 xfer = sce->ra_wb_xfer; 652 653 s = splusb(); 654 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 655 splx(s); 656 return (EWOULDBLOCK); 657 } 658 while (uio->uio_resid > 0 && !error) { 659 while (sce->ra_wb_used == 0) { 660 sce->state |= UGEN_ASLP; 661 DPRINTFN(5, 662 ("ugenread: sleep on %p\n", 663 sce)); 664 error = tsleep(sce, PZERO | PCATCH, 665 "ugenrb", 0); 666 DPRINTFN(5, 667 ("ugenread: woke, error=%d\n", 668 error)); 669 if (sc->sc_dying) 670 error = EIO; 671 if (error) { 672 sce->state &= ~UGEN_ASLP; 673 break; 674 } 675 } 676 677 /* Copy data to the process. */ 678 while (uio->uio_resid > 0 679 && sce->ra_wb_used > 0) { 680 n = min(uio->uio_resid, 681 sce->ra_wb_used); 682 n = min(n, sce->limit - sce->cur); 683 error = uiomove(sce->cur, n, uio); 684 if (error) 685 break; 686 sce->cur += n; 687 sce->ra_wb_used -= n; 688 if (sce->cur == sce->limit) 689 sce->cur = sce->ibuf; 690 } 691 692 /* 693 * If the transfers stopped because the 694 * buffer was full, restart them. 695 */ 696 if (sce->state & UGEN_RA_WB_STOP && 697 sce->ra_wb_used < sce->limit - sce->ibuf) { 698 n = (sce->limit - sce->ibuf) 699 - sce->ra_wb_used; 700 usbd_setup_xfer(xfer, 701 sce->pipeh, sce, NULL, 702 min(n, sce->ra_wb_xferlen), 703 USBD_NO_COPY, USBD_NO_TIMEOUT, 704 ugen_bulkra_intr); 705 sce->state &= ~UGEN_RA_WB_STOP; 706 err = usbd_transfer(xfer); 707 if (err != USBD_IN_PROGRESS) 708 /* 709 * The transfer has not been 710 * queued. Setting STOP 711 * will make us try 712 * again at the next read. 713 */ 714 sce->state |= UGEN_RA_WB_STOP; 715 } 716 } 717 splx(s); 718 break; 719 } 720 #endif 721 xfer = usbd_alloc_xfer(sc->sc_udev); 722 if (xfer == 0) 723 return (ENOMEM); 724 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 725 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 726 tn = n; 727 err = usbd_bulk_transfer( 728 xfer, sce->pipeh, 729 sce->state & UGEN_SHORT_OK ? 730 USBD_SHORT_XFER_OK : 0, 731 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 732 if (err) { 733 if (err == USBD_INTERRUPTED) 734 error = EINTR; 735 else if (err == USBD_TIMEOUT) 736 error = ETIMEDOUT; 737 else 738 error = EIO; 739 break; 740 } 741 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 742 error = uiomove(sc->sc_buffer, tn, uio); 743 if (error || tn < n) 744 break; 745 } 746 usbd_free_xfer(xfer); 747 break; 748 case UE_ISOCHRONOUS: 749 s = splusb(); 750 while (sce->cur == sce->fill) { 751 if (flag & IO_NDELAY) { 752 splx(s); 753 return (EWOULDBLOCK); 754 } 755 sce->state |= UGEN_ASLP; 756 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 757 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 758 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 759 if (sc->sc_dying) 760 error = EIO; 761 if (error) { 762 sce->state &= ~UGEN_ASLP; 763 break; 764 } 765 } 766 767 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 768 if(sce->fill > sce->cur) 769 n = min(sce->fill - sce->cur, uio->uio_resid); 770 else 771 n = min(sce->limit - sce->cur, uio->uio_resid); 772 773 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 774 775 /* Copy the data to the user process. */ 776 error = uiomove(sce->cur, n, uio); 777 if (error) 778 break; 779 sce->cur += n; 780 if(sce->cur >= sce->limit) 781 sce->cur = sce->ibuf; 782 } 783 splx(s); 784 break; 785 786 787 default: 788 return (ENXIO); 789 } 790 return (error); 791 } 792 793 int 794 ugenread(dev_t dev, struct uio *uio, int flag) 795 { 796 int endpt = UGENENDPOINT(dev); 797 struct ugen_softc *sc; 798 int error; 799 800 USB_GET_SC(ugen, UGENUNIT(dev), sc); 801 802 sc->sc_refcnt++; 803 error = ugen_do_read(sc, endpt, uio, flag); 804 if (--sc->sc_refcnt < 0) 805 usb_detach_wakeup(USBDEV(sc->sc_dev)); 806 return (error); 807 } 808 809 Static int 810 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 811 int flag) 812 { 813 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 814 u_int32_t n; 815 int error = 0; 816 #ifdef UGEN_BULK_RA_WB 817 int s; 818 u_int32_t tn; 819 char *dbuf; 820 #endif 821 usbd_xfer_handle xfer; 822 usbd_status err; 823 824 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 825 826 if (sc->sc_dying) 827 return (EIO); 828 829 if (endpt == USB_CONTROL_ENDPOINT) 830 return (ENODEV); 831 832 #ifdef DIAGNOSTIC 833 if (sce->edesc == NULL) { 834 printf("ugenwrite: no edesc\n"); 835 return (EIO); 836 } 837 if (sce->pipeh == NULL) { 838 printf("ugenwrite: no pipe\n"); 839 return (EIO); 840 } 841 #endif 842 843 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 844 case UE_BULK: 845 #ifdef UGEN_BULK_RA_WB 846 if (sce->state & UGEN_BULK_WB) { 847 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 848 uio->uio_resid, sce->ra_wb_used)); 849 xfer = sce->ra_wb_xfer; 850 851 s = splusb(); 852 if (sce->ra_wb_used == sce->limit - sce->ibuf && 853 flag & IO_NDELAY) { 854 splx(s); 855 return (EWOULDBLOCK); 856 } 857 while (uio->uio_resid > 0 && !error) { 858 while (sce->ra_wb_used == 859 sce->limit - sce->ibuf) { 860 sce->state |= UGEN_ASLP; 861 DPRINTFN(5, 862 ("ugenwrite: sleep on %p\n", 863 sce)); 864 error = tsleep(sce, PZERO | PCATCH, 865 "ugenwb", 0); 866 DPRINTFN(5, 867 ("ugenwrite: woke, error=%d\n", 868 error)); 869 if (sc->sc_dying) 870 error = EIO; 871 if (error) { 872 sce->state &= ~UGEN_ASLP; 873 break; 874 } 875 } 876 877 /* Copy data from the process. */ 878 while (uio->uio_resid > 0 && 879 sce->ra_wb_used < sce->limit - sce->ibuf) { 880 n = min(uio->uio_resid, 881 (sce->limit - sce->ibuf) 882 - sce->ra_wb_used); 883 n = min(n, sce->limit - sce->fill); 884 error = uiomove(sce->fill, n, uio); 885 if (error) 886 break; 887 sce->fill += n; 888 sce->ra_wb_used += n; 889 if (sce->fill == sce->limit) 890 sce->fill = sce->ibuf; 891 } 892 893 /* 894 * If the transfers stopped because the 895 * buffer was empty, restart them. 896 */ 897 if (sce->state & UGEN_RA_WB_STOP && 898 sce->ra_wb_used > 0) { 899 dbuf = (char *)usbd_get_buffer(xfer); 900 n = min(sce->ra_wb_used, 901 sce->ra_wb_xferlen); 902 tn = min(n, sce->limit - sce->cur); 903 memcpy(dbuf, sce->cur, tn); 904 dbuf += tn; 905 if (n - tn > 0) 906 memcpy(dbuf, sce->ibuf, 907 n - tn); 908 usbd_setup_xfer(xfer, 909 sce->pipeh, sce, NULL, n, 910 USBD_NO_COPY, USBD_NO_TIMEOUT, 911 ugen_bulkwb_intr); 912 sce->state &= ~UGEN_RA_WB_STOP; 913 err = usbd_transfer(xfer); 914 if (err != USBD_IN_PROGRESS) 915 /* 916 * The transfer has not been 917 * queued. Setting STOP 918 * will make us try again 919 * at the next read. 920 */ 921 sce->state |= UGEN_RA_WB_STOP; 922 } 923 } 924 splx(s); 925 break; 926 } 927 #endif 928 xfer = usbd_alloc_xfer(sc->sc_udev); 929 if (xfer == 0) 930 return (EIO); 931 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 932 error = uiomove(sc->sc_buffer, n, uio); 933 if (error) 934 break; 935 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 936 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 937 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 938 if (err) { 939 if (err == USBD_INTERRUPTED) 940 error = EINTR; 941 else if (err == USBD_TIMEOUT) 942 error = ETIMEDOUT; 943 else 944 error = EIO; 945 break; 946 } 947 } 948 usbd_free_xfer(xfer); 949 break; 950 case UE_INTERRUPT: 951 xfer = usbd_alloc_xfer(sc->sc_udev); 952 if (xfer == 0) 953 return (EIO); 954 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 955 uio->uio_resid)) != 0) { 956 error = uiomove(sc->sc_buffer, n, uio); 957 if (error) 958 break; 959 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 960 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 961 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 962 if (err) { 963 if (err == USBD_INTERRUPTED) 964 error = EINTR; 965 else if (err == USBD_TIMEOUT) 966 error = ETIMEDOUT; 967 else 968 error = EIO; 969 break; 970 } 971 } 972 usbd_free_xfer(xfer); 973 break; 974 default: 975 return (ENXIO); 976 } 977 return (error); 978 } 979 980 int 981 ugenwrite(dev_t dev, struct uio *uio, int flag) 982 { 983 int endpt = UGENENDPOINT(dev); 984 struct ugen_softc *sc; 985 int error; 986 987 USB_GET_SC(ugen, UGENUNIT(dev), sc); 988 989 sc->sc_refcnt++; 990 error = ugen_do_write(sc, endpt, uio, flag); 991 if (--sc->sc_refcnt < 0) 992 usb_detach_wakeup(USBDEV(sc->sc_dev)); 993 return (error); 994 } 995 996 #if defined(__NetBSD__) || defined(__OpenBSD__) 997 int 998 ugen_activate(device_ptr_t self, enum devact act) 999 { 1000 struct ugen_softc *sc = device_private(self); 1001 1002 switch (act) { 1003 case DVACT_DEACTIVATE: 1004 sc->sc_dying = 1; 1005 return 0; 1006 default: 1007 return EOPNOTSUPP; 1008 } 1009 } 1010 #endif 1011 1012 USB_DETACH(ugen) 1013 { 1014 USB_DETACH_START(ugen, sc); 1015 struct ugen_endpoint *sce; 1016 int i, dir; 1017 int s; 1018 #if defined(__NetBSD__) || defined(__OpenBSD__) 1019 int maj, mn; 1020 1021 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1022 #elif defined(__FreeBSD__) 1023 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1024 #endif 1025 1026 sc->sc_dying = 1; 1027 pmf_device_deregister(self); 1028 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1029 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1030 for (dir = OUT; dir <= IN; dir++) { 1031 sce = &sc->sc_endpoints[i][dir]; 1032 if (sce && sce->pipeh) 1033 usbd_abort_pipe(sce->pipeh); 1034 } 1035 } 1036 1037 s = splusb(); 1038 if (--sc->sc_refcnt >= 0) { 1039 /* Wake everyone */ 1040 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1041 wakeup(&sc->sc_endpoints[i][IN]); 1042 /* Wait for processes to go away. */ 1043 usb_detach_wait(USBDEV(sc->sc_dev)); 1044 } 1045 splx(s); 1046 1047 #if defined(__NetBSD__) || defined(__OpenBSD__) 1048 /* locate the major number */ 1049 #if defined(__NetBSD__) 1050 maj = cdevsw_lookup_major(&ugen_cdevsw); 1051 #elif defined(__OpenBSD__) 1052 for (maj = 0; maj < nchrdev; maj++) 1053 if (cdevsw[maj].d_open == ugenopen) 1054 break; 1055 #endif 1056 1057 /* Nuke the vnodes for any open instances (calls close). */ 1058 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1059 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1060 #elif defined(__FreeBSD__) 1061 /* XXX not implemented yet */ 1062 #endif 1063 1064 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1065 USBDEV(sc->sc_dev)); 1066 1067 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1068 for (dir = OUT; dir <= IN; dir++) { 1069 sce = &sc->sc_endpoints[i][dir]; 1070 seldestroy(&sce->rsel); 1071 } 1072 } 1073 1074 return (0); 1075 } 1076 1077 Static void 1078 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1079 { 1080 struct ugen_endpoint *sce = addr; 1081 /*struct ugen_softc *sc = sce->sc;*/ 1082 u_int32_t count; 1083 u_char *ibuf; 1084 1085 if (status == USBD_CANCELLED) 1086 return; 1087 1088 if (status != USBD_NORMAL_COMPLETION) { 1089 DPRINTF(("ugenintr: status=%d\n", status)); 1090 if (status == USBD_STALLED) 1091 usbd_clear_endpoint_stall_async(sce->pipeh); 1092 return; 1093 } 1094 1095 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1096 ibuf = sce->ibuf; 1097 1098 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1099 xfer, status, count)); 1100 DPRINTFN(5, (" data = %02x %02x %02x\n", 1101 ibuf[0], ibuf[1], ibuf[2])); 1102 1103 (void)b_to_q(ibuf, count, &sce->q); 1104 1105 if (sce->state & UGEN_ASLP) { 1106 sce->state &= ~UGEN_ASLP; 1107 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1108 wakeup(sce); 1109 } 1110 selnotify(&sce->rsel, 0, 0); 1111 } 1112 1113 Static void 1114 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1115 usbd_status status) 1116 { 1117 struct isoreq *req = addr; 1118 struct ugen_endpoint *sce = req->sce; 1119 u_int32_t count, n; 1120 int i, isize; 1121 1122 /* Return if we are aborting. */ 1123 if (status == USBD_CANCELLED) 1124 return; 1125 1126 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1127 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1128 (long)(req - sce->isoreqs), count)); 1129 1130 /* throw away oldest input if the buffer is full */ 1131 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1132 sce->cur += count; 1133 if(sce->cur >= sce->limit) 1134 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1135 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1136 count)); 1137 } 1138 1139 isize = UGETW(sce->edesc->wMaxPacketSize); 1140 for (i = 0; i < UGEN_NISORFRMS; i++) { 1141 u_int32_t actlen = req->sizes[i]; 1142 char const *tbuf = (char const *)req->dmabuf + isize * i; 1143 1144 /* copy data to buffer */ 1145 while (actlen > 0) { 1146 n = min(actlen, sce->limit - sce->fill); 1147 memcpy(sce->fill, tbuf, n); 1148 1149 tbuf += n; 1150 actlen -= n; 1151 sce->fill += n; 1152 if(sce->fill == sce->limit) 1153 sce->fill = sce->ibuf; 1154 } 1155 1156 /* setup size for next transfer */ 1157 req->sizes[i] = isize; 1158 } 1159 1160 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1161 USBD_NO_COPY, ugen_isoc_rintr); 1162 (void)usbd_transfer(xfer); 1163 1164 if (sce->state & UGEN_ASLP) { 1165 sce->state &= ~UGEN_ASLP; 1166 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1167 wakeup(sce); 1168 } 1169 selnotify(&sce->rsel, 0, 0); 1170 } 1171 1172 #ifdef UGEN_BULK_RA_WB 1173 Static void 1174 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1175 usbd_status status) 1176 { 1177 struct ugen_endpoint *sce = addr; 1178 u_int32_t count, n; 1179 char const *tbuf; 1180 usbd_status err; 1181 1182 /* Return if we are aborting. */ 1183 if (status == USBD_CANCELLED) 1184 return; 1185 1186 if (status != USBD_NORMAL_COMPLETION) { 1187 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1188 sce->state |= UGEN_RA_WB_STOP; 1189 if (status == USBD_STALLED) 1190 usbd_clear_endpoint_stall_async(sce->pipeh); 1191 return; 1192 } 1193 1194 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1195 1196 /* Keep track of how much is in the buffer. */ 1197 sce->ra_wb_used += count; 1198 1199 /* Copy data to buffer. */ 1200 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1201 n = min(count, sce->limit - sce->fill); 1202 memcpy(sce->fill, tbuf, n); 1203 tbuf += n; 1204 count -= n; 1205 sce->fill += n; 1206 if (sce->fill == sce->limit) 1207 sce->fill = sce->ibuf; 1208 if (count > 0) { 1209 memcpy(sce->fill, tbuf, count); 1210 sce->fill += count; 1211 } 1212 1213 /* Set up the next request if necessary. */ 1214 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1215 if (n > 0) { 1216 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1217 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1218 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1219 err = usbd_transfer(xfer); 1220 if (err != USBD_IN_PROGRESS) { 1221 printf("usbd_bulkra_intr: error=%d\n", err); 1222 /* 1223 * The transfer has not been queued. Setting STOP 1224 * will make us try again at the next read. 1225 */ 1226 sce->state |= UGEN_RA_WB_STOP; 1227 } 1228 } 1229 else 1230 sce->state |= UGEN_RA_WB_STOP; 1231 1232 if (sce->state & UGEN_ASLP) { 1233 sce->state &= ~UGEN_ASLP; 1234 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1235 wakeup(sce); 1236 } 1237 selnotify(&sce->rsel, 0, 0); 1238 } 1239 1240 Static void 1241 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1242 usbd_status status) 1243 { 1244 struct ugen_endpoint *sce = addr; 1245 u_int32_t count, n; 1246 char *tbuf; 1247 usbd_status err; 1248 1249 /* Return if we are aborting. */ 1250 if (status == USBD_CANCELLED) 1251 return; 1252 1253 if (status != USBD_NORMAL_COMPLETION) { 1254 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1255 sce->state |= UGEN_RA_WB_STOP; 1256 if (status == USBD_STALLED) 1257 usbd_clear_endpoint_stall_async(sce->pipeh); 1258 return; 1259 } 1260 1261 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1262 1263 /* Keep track of how much is in the buffer. */ 1264 sce->ra_wb_used -= count; 1265 1266 /* Update buffer pointers. */ 1267 sce->cur += count; 1268 if (sce->cur >= sce->limit) 1269 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1270 1271 /* Set up next request if necessary. */ 1272 if (sce->ra_wb_used > 0) { 1273 /* copy data from buffer */ 1274 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1275 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1276 n = min(count, sce->limit - sce->cur); 1277 memcpy(tbuf, sce->cur, n); 1278 tbuf += n; 1279 if (count - n > 0) 1280 memcpy(tbuf, sce->ibuf, count - n); 1281 1282 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1283 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1284 err = usbd_transfer(xfer); 1285 if (err != USBD_IN_PROGRESS) { 1286 printf("usbd_bulkwb_intr: error=%d\n", err); 1287 /* 1288 * The transfer has not been queued. Setting STOP 1289 * will make us try again at the next write. 1290 */ 1291 sce->state |= UGEN_RA_WB_STOP; 1292 } 1293 } 1294 else 1295 sce->state |= UGEN_RA_WB_STOP; 1296 1297 if (sce->state & UGEN_ASLP) { 1298 sce->state &= ~UGEN_ASLP; 1299 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1300 wakeup(sce); 1301 } 1302 selnotify(&sce->rsel, 0, 0); 1303 } 1304 #endif 1305 1306 Static usbd_status 1307 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1308 { 1309 usbd_interface_handle iface; 1310 usb_endpoint_descriptor_t *ed; 1311 usbd_status err; 1312 struct ugen_endpoint *sce; 1313 u_int8_t niface, nendpt, endptno, endpt; 1314 int dir; 1315 1316 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1317 1318 err = usbd_interface_count(sc->sc_udev, &niface); 1319 if (err) 1320 return (err); 1321 if (ifaceidx < 0 || ifaceidx >= niface) 1322 return (USBD_INVAL); 1323 1324 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1325 if (err) 1326 return (err); 1327 err = usbd_endpoint_count(iface, &nendpt); 1328 if (err) 1329 return (err); 1330 /* XXX should only do this after setting new altno has succeeded */ 1331 for (endptno = 0; endptno < nendpt; endptno++) { 1332 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1333 endpt = ed->bEndpointAddress; 1334 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1335 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1336 sce->sc = 0; 1337 sce->edesc = 0; 1338 sce->iface = 0; 1339 } 1340 1341 /* change setting */ 1342 err = usbd_set_interface(iface, altno); 1343 if (err) 1344 return (err); 1345 1346 err = usbd_endpoint_count(iface, &nendpt); 1347 if (err) 1348 return (err); 1349 for (endptno = 0; endptno < nendpt; endptno++) { 1350 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1351 KASSERT(ed != NULL); 1352 endpt = ed->bEndpointAddress; 1353 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1354 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1355 sce->sc = sc; 1356 sce->edesc = ed; 1357 sce->iface = iface; 1358 } 1359 return (0); 1360 } 1361 1362 /* Retrieve a complete descriptor for a certain device and index. */ 1363 Static usb_config_descriptor_t * 1364 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1365 { 1366 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1367 int len; 1368 usbd_status err; 1369 1370 if (index == USB_CURRENT_CONFIG_INDEX) { 1371 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1372 len = UGETW(tdesc->wTotalLength); 1373 if (lenp) 1374 *lenp = len; 1375 cdesc = malloc(len, M_TEMP, M_WAITOK); 1376 memcpy(cdesc, tdesc, len); 1377 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1378 } else { 1379 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1380 if (err) 1381 return (0); 1382 len = UGETW(cdescr.wTotalLength); 1383 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1384 if (lenp) 1385 *lenp = len; 1386 cdesc = malloc(len, M_TEMP, M_WAITOK); 1387 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1388 if (err) { 1389 free(cdesc, M_TEMP); 1390 return (0); 1391 } 1392 } 1393 return (cdesc); 1394 } 1395 1396 Static int 1397 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1398 { 1399 usbd_interface_handle iface; 1400 usbd_status err; 1401 1402 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1403 if (err) 1404 return (-1); 1405 return (usbd_get_interface_altindex(iface)); 1406 } 1407 1408 Static int 1409 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1410 void *addr, int flag, struct lwp *l) 1411 { 1412 struct ugen_endpoint *sce; 1413 usbd_status err; 1414 usbd_interface_handle iface; 1415 struct usb_config_desc *cd; 1416 usb_config_descriptor_t *cdesc; 1417 struct usb_interface_desc *id; 1418 usb_interface_descriptor_t *idesc; 1419 struct usb_endpoint_desc *ed; 1420 usb_endpoint_descriptor_t *edesc; 1421 struct usb_alt_interface *ai; 1422 struct usb_string_desc *si; 1423 u_int8_t conf, alt; 1424 1425 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1426 if (sc->sc_dying) 1427 return (EIO); 1428 1429 switch (cmd) { 1430 case FIONBIO: 1431 /* All handled in the upper FS layer. */ 1432 return (0); 1433 case USB_SET_SHORT_XFER: 1434 if (endpt == USB_CONTROL_ENDPOINT) 1435 return (EINVAL); 1436 /* This flag only affects read */ 1437 sce = &sc->sc_endpoints[endpt][IN]; 1438 if (sce == NULL || sce->pipeh == NULL) 1439 return (EINVAL); 1440 if (*(int *)addr) 1441 sce->state |= UGEN_SHORT_OK; 1442 else 1443 sce->state &= ~UGEN_SHORT_OK; 1444 return (0); 1445 case USB_SET_TIMEOUT: 1446 sce = &sc->sc_endpoints[endpt][IN]; 1447 if (sce == NULL 1448 /* XXX this shouldn't happen, but the distinction between 1449 input and output pipes isn't clear enough. 1450 || sce->pipeh == NULL */ 1451 ) 1452 return (EINVAL); 1453 sce->timeout = *(int *)addr; 1454 return (0); 1455 case USB_SET_BULK_RA: 1456 #ifdef UGEN_BULK_RA_WB 1457 if (endpt == USB_CONTROL_ENDPOINT) 1458 return (EINVAL); 1459 sce = &sc->sc_endpoints[endpt][IN]; 1460 if (sce == NULL || sce->pipeh == NULL) 1461 return (EINVAL); 1462 edesc = sce->edesc; 1463 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1464 return (EINVAL); 1465 1466 if (*(int *)addr) { 1467 /* Only turn RA on if it's currently off. */ 1468 if (sce->state & UGEN_BULK_RA) 1469 return (0); 1470 1471 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1472 /* shouldn't happen */ 1473 return (EINVAL); 1474 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1475 if (sce->ra_wb_xfer == NULL) 1476 return (ENOMEM); 1477 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1478 /* 1479 * Set up a dmabuf because we reuse the xfer with 1480 * the same (max) request length like isoc. 1481 */ 1482 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1483 sce->ra_wb_xferlen) == 0) { 1484 usbd_free_xfer(sce->ra_wb_xfer); 1485 return (ENOMEM); 1486 } 1487 sce->ibuf = malloc(sce->ra_wb_bufsize, 1488 M_USBDEV, M_WAITOK); 1489 sce->fill = sce->cur = sce->ibuf; 1490 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1491 sce->ra_wb_used = 0; 1492 sce->state |= UGEN_BULK_RA; 1493 sce->state &= ~UGEN_RA_WB_STOP; 1494 /* Now start reading. */ 1495 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1496 NULL, 1497 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1498 USBD_NO_COPY, USBD_NO_TIMEOUT, 1499 ugen_bulkra_intr); 1500 err = usbd_transfer(sce->ra_wb_xfer); 1501 if (err != USBD_IN_PROGRESS) { 1502 sce->state &= ~UGEN_BULK_RA; 1503 free(sce->ibuf, M_USBDEV); 1504 sce->ibuf = NULL; 1505 usbd_free_xfer(sce->ra_wb_xfer); 1506 return (EIO); 1507 } 1508 } else { 1509 /* Only turn RA off if it's currently on. */ 1510 if (!(sce->state & UGEN_BULK_RA)) 1511 return (0); 1512 1513 sce->state &= ~UGEN_BULK_RA; 1514 usbd_abort_pipe(sce->pipeh); 1515 usbd_free_xfer(sce->ra_wb_xfer); 1516 /* 1517 * XXX Discard whatever's in the buffer, but we 1518 * should keep it around and drain the buffer 1519 * instead. 1520 */ 1521 free(sce->ibuf, M_USBDEV); 1522 sce->ibuf = NULL; 1523 } 1524 return (0); 1525 #else 1526 return (EOPNOTSUPP); 1527 #endif 1528 case USB_SET_BULK_WB: 1529 #ifdef UGEN_BULK_RA_WB 1530 if (endpt == USB_CONTROL_ENDPOINT) 1531 return (EINVAL); 1532 sce = &sc->sc_endpoints[endpt][OUT]; 1533 if (sce == NULL || sce->pipeh == NULL) 1534 return (EINVAL); 1535 edesc = sce->edesc; 1536 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1537 return (EINVAL); 1538 1539 if (*(int *)addr) { 1540 /* Only turn WB on if it's currently off. */ 1541 if (sce->state & UGEN_BULK_WB) 1542 return (0); 1543 1544 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1545 /* shouldn't happen */ 1546 return (EINVAL); 1547 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1548 if (sce->ra_wb_xfer == NULL) 1549 return (ENOMEM); 1550 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1551 /* 1552 * Set up a dmabuf because we reuse the xfer with 1553 * the same (max) request length like isoc. 1554 */ 1555 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1556 sce->ra_wb_xferlen) == 0) { 1557 usbd_free_xfer(sce->ra_wb_xfer); 1558 return (ENOMEM); 1559 } 1560 sce->ibuf = malloc(sce->ra_wb_bufsize, 1561 M_USBDEV, M_WAITOK); 1562 sce->fill = sce->cur = sce->ibuf; 1563 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1564 sce->ra_wb_used = 0; 1565 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1566 } else { 1567 /* Only turn WB off if it's currently on. */ 1568 if (!(sce->state & UGEN_BULK_WB)) 1569 return (0); 1570 1571 sce->state &= ~UGEN_BULK_WB; 1572 /* 1573 * XXX Discard whatever's in the buffer, but we 1574 * should keep it around and keep writing to 1575 * drain the buffer instead. 1576 */ 1577 usbd_abort_pipe(sce->pipeh); 1578 usbd_free_xfer(sce->ra_wb_xfer); 1579 free(sce->ibuf, M_USBDEV); 1580 sce->ibuf = NULL; 1581 } 1582 return (0); 1583 #else 1584 return (EOPNOTSUPP); 1585 #endif 1586 case USB_SET_BULK_RA_OPT: 1587 case USB_SET_BULK_WB_OPT: 1588 #ifdef UGEN_BULK_RA_WB 1589 { 1590 struct usb_bulk_ra_wb_opt *opt; 1591 1592 if (endpt == USB_CONTROL_ENDPOINT) 1593 return (EINVAL); 1594 opt = (struct usb_bulk_ra_wb_opt *)addr; 1595 if (cmd == USB_SET_BULK_RA_OPT) 1596 sce = &sc->sc_endpoints[endpt][IN]; 1597 else 1598 sce = &sc->sc_endpoints[endpt][OUT]; 1599 if (sce == NULL || sce->pipeh == NULL) 1600 return (EINVAL); 1601 if (opt->ra_wb_buffer_size < 1 || 1602 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1603 opt->ra_wb_request_size < 1 || 1604 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1605 return (EINVAL); 1606 /* 1607 * XXX These changes do not take effect until the 1608 * next time RA/WB mode is enabled but they ought to 1609 * take effect immediately. 1610 */ 1611 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1612 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1613 return (0); 1614 } 1615 #else 1616 return (EOPNOTSUPP); 1617 #endif 1618 default: 1619 break; 1620 } 1621 1622 if (endpt != USB_CONTROL_ENDPOINT) 1623 return (EINVAL); 1624 1625 switch (cmd) { 1626 #ifdef UGEN_DEBUG 1627 case USB_SETDEBUG: 1628 ugendebug = *(int *)addr; 1629 break; 1630 #endif 1631 case USB_GET_CONFIG: 1632 err = usbd_get_config(sc->sc_udev, &conf); 1633 if (err) 1634 return (EIO); 1635 *(int *)addr = conf; 1636 break; 1637 case USB_SET_CONFIG: 1638 if (!(flag & FWRITE)) 1639 return (EPERM); 1640 err = ugen_set_config(sc, *(int *)addr); 1641 switch (err) { 1642 case USBD_NORMAL_COMPLETION: 1643 break; 1644 case USBD_IN_USE: 1645 return (EBUSY); 1646 default: 1647 return (EIO); 1648 } 1649 break; 1650 case USB_GET_ALTINTERFACE: 1651 ai = (struct usb_alt_interface *)addr; 1652 err = usbd_device2interface_handle(sc->sc_udev, 1653 ai->uai_interface_index, &iface); 1654 if (err) 1655 return (EINVAL); 1656 idesc = usbd_get_interface_descriptor(iface); 1657 if (idesc == NULL) 1658 return (EIO); 1659 ai->uai_alt_no = idesc->bAlternateSetting; 1660 break; 1661 case USB_SET_ALTINTERFACE: 1662 if (!(flag & FWRITE)) 1663 return (EPERM); 1664 ai = (struct usb_alt_interface *)addr; 1665 err = usbd_device2interface_handle(sc->sc_udev, 1666 ai->uai_interface_index, &iface); 1667 if (err) 1668 return (EINVAL); 1669 err = ugen_set_interface(sc, ai->uai_interface_index, 1670 ai->uai_alt_no); 1671 if (err) 1672 return (EINVAL); 1673 break; 1674 case USB_GET_NO_ALT: 1675 ai = (struct usb_alt_interface *)addr; 1676 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1677 if (cdesc == NULL) 1678 return (EINVAL); 1679 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1680 if (idesc == NULL) { 1681 free(cdesc, M_TEMP); 1682 return (EINVAL); 1683 } 1684 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1685 idesc->bInterfaceNumber); 1686 free(cdesc, M_TEMP); 1687 break; 1688 case USB_GET_DEVICE_DESC: 1689 *(usb_device_descriptor_t *)addr = 1690 *usbd_get_device_descriptor(sc->sc_udev); 1691 break; 1692 case USB_GET_CONFIG_DESC: 1693 cd = (struct usb_config_desc *)addr; 1694 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1695 if (cdesc == NULL) 1696 return (EINVAL); 1697 cd->ucd_desc = *cdesc; 1698 free(cdesc, M_TEMP); 1699 break; 1700 case USB_GET_INTERFACE_DESC: 1701 id = (struct usb_interface_desc *)addr; 1702 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1703 if (cdesc == NULL) 1704 return (EINVAL); 1705 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1706 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1707 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1708 else 1709 alt = id->uid_alt_index; 1710 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1711 if (idesc == NULL) { 1712 free(cdesc, M_TEMP); 1713 return (EINVAL); 1714 } 1715 id->uid_desc = *idesc; 1716 free(cdesc, M_TEMP); 1717 break; 1718 case USB_GET_ENDPOINT_DESC: 1719 ed = (struct usb_endpoint_desc *)addr; 1720 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1721 if (cdesc == NULL) 1722 return (EINVAL); 1723 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1724 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1725 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1726 else 1727 alt = ed->ued_alt_index; 1728 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1729 alt, ed->ued_endpoint_index); 1730 if (edesc == NULL) { 1731 free(cdesc, M_TEMP); 1732 return (EINVAL); 1733 } 1734 ed->ued_desc = *edesc; 1735 free(cdesc, M_TEMP); 1736 break; 1737 case USB_GET_FULL_DESC: 1738 { 1739 int len; 1740 struct iovec iov; 1741 struct uio uio; 1742 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1743 int error; 1744 1745 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1746 if (cdesc == NULL) 1747 return (EINVAL); 1748 if (len > fd->ufd_size) 1749 len = fd->ufd_size; 1750 iov.iov_base = (void *)fd->ufd_data; 1751 iov.iov_len = len; 1752 uio.uio_iov = &iov; 1753 uio.uio_iovcnt = 1; 1754 uio.uio_resid = len; 1755 uio.uio_offset = 0; 1756 uio.uio_rw = UIO_READ; 1757 uio.uio_vmspace = l->l_proc->p_vmspace; 1758 error = uiomove((void *)cdesc, len, &uio); 1759 free(cdesc, M_TEMP); 1760 return (error); 1761 } 1762 case USB_GET_STRING_DESC: { 1763 int len; 1764 si = (struct usb_string_desc *)addr; 1765 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1766 si->usd_language_id, &si->usd_desc, &len); 1767 if (err) 1768 return (EINVAL); 1769 break; 1770 } 1771 case USB_DO_REQUEST: 1772 { 1773 struct usb_ctl_request *ur = (void *)addr; 1774 int len = UGETW(ur->ucr_request.wLength); 1775 struct iovec iov; 1776 struct uio uio; 1777 void *ptr = 0; 1778 usbd_status xerr; 1779 int error = 0; 1780 1781 if (!(flag & FWRITE)) 1782 return (EPERM); 1783 /* Avoid requests that would damage the bus integrity. */ 1784 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1785 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1786 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1787 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1788 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1789 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1790 return (EINVAL); 1791 1792 if (len < 0 || len > 32767) 1793 return (EINVAL); 1794 if (len != 0) { 1795 iov.iov_base = (void *)ur->ucr_data; 1796 iov.iov_len = len; 1797 uio.uio_iov = &iov; 1798 uio.uio_iovcnt = 1; 1799 uio.uio_resid = len; 1800 uio.uio_offset = 0; 1801 uio.uio_rw = 1802 ur->ucr_request.bmRequestType & UT_READ ? 1803 UIO_READ : UIO_WRITE; 1804 uio.uio_vmspace = l->l_proc->p_vmspace; 1805 ptr = malloc(len, M_TEMP, M_WAITOK); 1806 if (uio.uio_rw == UIO_WRITE) { 1807 error = uiomove(ptr, len, &uio); 1808 if (error) 1809 goto ret; 1810 } 1811 } 1812 sce = &sc->sc_endpoints[endpt][IN]; 1813 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1814 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1815 if (xerr) { 1816 error = EIO; 1817 goto ret; 1818 } 1819 if (len != 0) { 1820 if (uio.uio_rw == UIO_READ) { 1821 error = uiomove(ptr, len, &uio); 1822 if (error) 1823 goto ret; 1824 } 1825 } 1826 ret: 1827 if (ptr) 1828 free(ptr, M_TEMP); 1829 return (error); 1830 } 1831 case USB_GET_DEVICEINFO: 1832 usbd_fill_deviceinfo(sc->sc_udev, 1833 (struct usb_device_info *)addr, 0); 1834 break; 1835 #ifdef COMPAT_30 1836 case USB_GET_DEVICEINFO_OLD: 1837 usbd_fill_deviceinfo_old(sc->sc_udev, 1838 (struct usb_device_info_old *)addr, 0); 1839 1840 break; 1841 #endif 1842 default: 1843 return (EINVAL); 1844 } 1845 return (0); 1846 } 1847 1848 int 1849 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1850 { 1851 int endpt = UGENENDPOINT(dev); 1852 struct ugen_softc *sc; 1853 int error; 1854 1855 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1856 1857 sc->sc_refcnt++; 1858 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1859 if (--sc->sc_refcnt < 0) 1860 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1861 return (error); 1862 } 1863 1864 int 1865 ugenpoll(dev_t dev, int events, struct lwp *l) 1866 { 1867 struct ugen_softc *sc; 1868 struct ugen_endpoint *sce_in, *sce_out; 1869 int revents = 0; 1870 int s; 1871 1872 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1873 1874 if (sc->sc_dying) 1875 return (POLLHUP); 1876 1877 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1878 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1879 if (sce_in == NULL && sce_out == NULL) 1880 return (POLLERR); 1881 #ifdef DIAGNOSTIC 1882 if (!sce_in->edesc && !sce_out->edesc) { 1883 printf("ugenpoll: no edesc\n"); 1884 return (POLLERR); 1885 } 1886 /* It's possible to have only one pipe open. */ 1887 if (!sce_in->pipeh && !sce_out->pipeh) { 1888 printf("ugenpoll: no pipe\n"); 1889 return (POLLERR); 1890 } 1891 #endif 1892 s = splusb(); 1893 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1894 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1895 case UE_INTERRUPT: 1896 if (sce_in->q.c_cc > 0) 1897 revents |= events & (POLLIN | POLLRDNORM); 1898 else 1899 selrecord(l, &sce_in->rsel); 1900 break; 1901 case UE_ISOCHRONOUS: 1902 if (sce_in->cur != sce_in->fill) 1903 revents |= events & (POLLIN | POLLRDNORM); 1904 else 1905 selrecord(l, &sce_in->rsel); 1906 break; 1907 case UE_BULK: 1908 #ifdef UGEN_BULK_RA_WB 1909 if (sce_in->state & UGEN_BULK_RA) { 1910 if (sce_in->ra_wb_used > 0) 1911 revents |= events & 1912 (POLLIN | POLLRDNORM); 1913 else 1914 selrecord(l, &sce_in->rsel); 1915 break; 1916 } 1917 #endif 1918 /* 1919 * We have no easy way of determining if a read will 1920 * yield any data or a write will happen. 1921 * Pretend they will. 1922 */ 1923 revents |= events & (POLLIN | POLLRDNORM); 1924 break; 1925 default: 1926 break; 1927 } 1928 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1929 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1930 case UE_INTERRUPT: 1931 case UE_ISOCHRONOUS: 1932 /* XXX unimplemented */ 1933 break; 1934 case UE_BULK: 1935 #ifdef UGEN_BULK_RA_WB 1936 if (sce_out->state & UGEN_BULK_WB) { 1937 if (sce_out->ra_wb_used < 1938 sce_out->limit - sce_out->ibuf) 1939 revents |= events & 1940 (POLLOUT | POLLWRNORM); 1941 else 1942 selrecord(l, &sce_out->rsel); 1943 break; 1944 } 1945 #endif 1946 /* 1947 * We have no easy way of determining if a read will 1948 * yield any data or a write will happen. 1949 * Pretend they will. 1950 */ 1951 revents |= events & (POLLOUT | POLLWRNORM); 1952 break; 1953 default: 1954 break; 1955 } 1956 1957 1958 splx(s); 1959 return (revents); 1960 } 1961 1962 static void 1963 filt_ugenrdetach(struct knote *kn) 1964 { 1965 struct ugen_endpoint *sce = kn->kn_hook; 1966 int s; 1967 1968 s = splusb(); 1969 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1970 splx(s); 1971 } 1972 1973 static int 1974 filt_ugenread_intr(struct knote *kn, long hint) 1975 { 1976 struct ugen_endpoint *sce = kn->kn_hook; 1977 1978 kn->kn_data = sce->q.c_cc; 1979 return (kn->kn_data > 0); 1980 } 1981 1982 static int 1983 filt_ugenread_isoc(struct knote *kn, long hint) 1984 { 1985 struct ugen_endpoint *sce = kn->kn_hook; 1986 1987 if (sce->cur == sce->fill) 1988 return (0); 1989 1990 if (sce->cur < sce->fill) 1991 kn->kn_data = sce->fill - sce->cur; 1992 else 1993 kn->kn_data = (sce->limit - sce->cur) + 1994 (sce->fill - sce->ibuf); 1995 1996 return (1); 1997 } 1998 1999 #ifdef UGEN_BULK_RA_WB 2000 static int 2001 filt_ugenread_bulk(struct knote *kn, long hint) 2002 { 2003 struct ugen_endpoint *sce = kn->kn_hook; 2004 2005 if (!(sce->state & UGEN_BULK_RA)) 2006 /* 2007 * We have no easy way of determining if a read will 2008 * yield any data or a write will happen. 2009 * So, emulate "seltrue". 2010 */ 2011 return (filt_seltrue(kn, hint)); 2012 2013 if (sce->ra_wb_used == 0) 2014 return (0); 2015 2016 kn->kn_data = sce->ra_wb_used; 2017 2018 return (1); 2019 } 2020 2021 static int 2022 filt_ugenwrite_bulk(struct knote *kn, long hint) 2023 { 2024 struct ugen_endpoint *sce = kn->kn_hook; 2025 2026 if (!(sce->state & UGEN_BULK_WB)) 2027 /* 2028 * We have no easy way of determining if a read will 2029 * yield any data or a write will happen. 2030 * So, emulate "seltrue". 2031 */ 2032 return (filt_seltrue(kn, hint)); 2033 2034 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2035 return (0); 2036 2037 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2038 2039 return (1); 2040 } 2041 #endif 2042 2043 static const struct filterops ugenread_intr_filtops = 2044 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2045 2046 static const struct filterops ugenread_isoc_filtops = 2047 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2048 2049 #ifdef UGEN_BULK_RA_WB 2050 static const struct filterops ugenread_bulk_filtops = 2051 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2052 2053 static const struct filterops ugenwrite_bulk_filtops = 2054 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2055 #else 2056 static const struct filterops ugen_seltrue_filtops = 2057 { 1, NULL, filt_ugenrdetach, filt_seltrue }; 2058 #endif 2059 2060 int 2061 ugenkqfilter(dev_t dev, struct knote *kn) 2062 { 2063 struct ugen_softc *sc; 2064 struct ugen_endpoint *sce; 2065 struct klist *klist; 2066 int s; 2067 2068 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2069 2070 if (sc->sc_dying) 2071 return (ENXIO); 2072 2073 switch (kn->kn_filter) { 2074 case EVFILT_READ: 2075 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2076 if (sce == NULL) 2077 return (EINVAL); 2078 2079 klist = &sce->rsel.sel_klist; 2080 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2081 case UE_INTERRUPT: 2082 kn->kn_fop = &ugenread_intr_filtops; 2083 break; 2084 case UE_ISOCHRONOUS: 2085 kn->kn_fop = &ugenread_isoc_filtops; 2086 break; 2087 case UE_BULK: 2088 #ifdef UGEN_BULK_RA_WB 2089 kn->kn_fop = &ugenread_bulk_filtops; 2090 break; 2091 #else 2092 /* 2093 * We have no easy way of determining if a read will 2094 * yield any data or a write will happen. 2095 * So, emulate "seltrue". 2096 */ 2097 kn->kn_fop = &ugen_seltrue_filtops; 2098 #endif 2099 break; 2100 default: 2101 return (EINVAL); 2102 } 2103 break; 2104 2105 case EVFILT_WRITE: 2106 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2107 if (sce == NULL) 2108 return (EINVAL); 2109 2110 klist = &sce->rsel.sel_klist; 2111 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2112 case UE_INTERRUPT: 2113 case UE_ISOCHRONOUS: 2114 /* XXX poll doesn't support this */ 2115 return (EINVAL); 2116 2117 case UE_BULK: 2118 #ifdef UGEN_BULK_RA_WB 2119 kn->kn_fop = &ugenwrite_bulk_filtops; 2120 #else 2121 /* 2122 * We have no easy way of determining if a read will 2123 * yield any data or a write will happen. 2124 * So, emulate "seltrue". 2125 */ 2126 kn->kn_fop = &ugen_seltrue_filtops; 2127 #endif 2128 break; 2129 default: 2130 return (EINVAL); 2131 } 2132 break; 2133 2134 default: 2135 return (EINVAL); 2136 } 2137 2138 kn->kn_hook = sce; 2139 2140 s = splusb(); 2141 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2142 splx(s); 2143 2144 return (0); 2145 } 2146 2147 #if defined(__FreeBSD__) 2148 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2149 #endif 2150
Indexes created Fri Sep 26 20:09:58 GMT 2025