ugen.c revision 1.99
1 /* $NetBSD: ugen.c,v 1.99 2008/05/24 16:40:58 cube 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 1.99 2008/05/24 16:40:58 cube 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 devinfop = usbd_devinfo_alloc(uaa->device, 0); 229 USB_ATTACH_SETUP; 230 aprint_normal_dev(self, "%s\n", devinfop); 231 usbd_devinfo_free(devinfop); 232 233 sc->sc_dev = self; 234 sc->sc_udev = udev = uaa->device; 235 236 /* First set configuration index 0, the default one for ugen. */ 237 err = usbd_set_config_index(udev, 0, 0); 238 if (err) { 239 aprint_error_dev(self, 240 "setting configuration index 0 failed\n"); 241 sc->sc_dying = 1; 242 USB_ATTACH_ERROR_RETURN; 243 } 244 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 245 246 /* Set up all the local state for this configuration. */ 247 err = ugen_set_config(sc, conf); 248 if (err) { 249 aprint_error_dev(self, "setting configuration %d failed\n", 250 conf); 251 sc->sc_dying = 1; 252 USB_ATTACH_ERROR_RETURN; 253 } 254 255 #ifdef __FreeBSD__ 256 { 257 static int global_init_done = 0; 258 if (!global_init_done) { 259 cdevsw_add(&ugen_cdevsw); 260 global_init_done = 1; 261 } 262 } 263 #endif 264 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 265 for (dir = OUT; dir <= IN; dir++) { 266 struct ugen_endpoint *sce; 267 268 sce = &sc->sc_endpoints[i][dir]; 269 selinit(&sce->rsel); 270 } 271 } 272 273 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 274 USBDEV(sc->sc_dev)); 275 276 if (!pmf_device_register(self, NULL, NULL)) 277 aprint_error_dev(self, "couldn't establish power handler\n"); 278 279 USB_ATTACH_SUCCESS_RETURN; 280 } 281 282 Static int 283 ugen_set_config(struct ugen_softc *sc, int configno) 284 { 285 usbd_device_handle dev = sc->sc_udev; 286 usbd_interface_handle iface; 287 usb_endpoint_descriptor_t *ed; 288 struct ugen_endpoint *sce; 289 u_int8_t niface, nendpt; 290 int ifaceno, endptno, endpt; 291 usbd_status err; 292 int dir; 293 294 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 295 USBDEVNAME(sc->sc_dev), configno, sc)); 296 297 /* 298 * We start at 1, not 0, because we don't care whether the 299 * control endpoint is open or not. It is always present. 300 */ 301 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 302 if (sc->sc_is_open[endptno]) { 303 DPRINTFN(1, 304 ("ugen_set_config: %s - endpoint %d is open\n", 305 USBDEVNAME(sc->sc_dev), endptno)); 306 return (USBD_IN_USE); 307 } 308 309 /* Avoid setting the current value. */ 310 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 311 err = usbd_set_config_no(dev, configno, 1); 312 if (err) 313 return (err); 314 } 315 316 err = usbd_interface_count(dev, &niface); 317 if (err) 318 return (err); 319 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 320 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 321 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 322 err = usbd_device2interface_handle(dev, ifaceno, &iface); 323 if (err) 324 return (err); 325 err = usbd_endpoint_count(iface, &nendpt); 326 if (err) 327 return (err); 328 for (endptno = 0; endptno < nendpt; endptno++) { 329 ed = usbd_interface2endpoint_descriptor(iface,endptno); 330 KASSERT(ed != NULL); 331 endpt = ed->bEndpointAddress; 332 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 333 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 334 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 335 "(%d,%d), sce=%p\n", 336 endptno, endpt, UE_GET_ADDR(endpt), 337 UE_GET_DIR(endpt), sce)); 338 sce->sc = sc; 339 sce->edesc = ed; 340 sce->iface = iface; 341 } 342 } 343 return (USBD_NORMAL_COMPLETION); 344 } 345 346 int 347 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 348 { 349 struct ugen_softc *sc; 350 int unit = UGENUNIT(dev); 351 int endpt = UGENENDPOINT(dev); 352 usb_endpoint_descriptor_t *edesc; 353 struct ugen_endpoint *sce; 354 int dir, isize; 355 usbd_status err; 356 usbd_xfer_handle xfer; 357 void *tbuf; 358 int i, j; 359 360 USB_GET_SC_OPEN(ugen, unit, sc); 361 362 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 363 flag, mode, unit, endpt)); 364 365 if (sc == NULL || sc->sc_dying) 366 return (ENXIO); 367 368 /* The control endpoint allows multiple opens. */ 369 if (endpt == USB_CONTROL_ENDPOINT) { 370 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 371 return (0); 372 } 373 374 if (sc->sc_is_open[endpt]) 375 return (EBUSY); 376 377 /* Make sure there are pipes for all directions. */ 378 for (dir = OUT; dir <= IN; dir++) { 379 if (flag & (dir == OUT ? FWRITE : FREAD)) { 380 sce = &sc->sc_endpoints[endpt][dir]; 381 if (sce == 0 || sce->edesc == 0) 382 return (ENXIO); 383 } 384 } 385 386 /* Actually open the pipes. */ 387 /* XXX Should back out properly if it fails. */ 388 for (dir = OUT; dir <= IN; dir++) { 389 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 390 continue; 391 sce = &sc->sc_endpoints[endpt][dir]; 392 sce->state = 0; 393 sce->timeout = USBD_NO_TIMEOUT; 394 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 395 sc, endpt, dir, sce)); 396 edesc = sce->edesc; 397 switch (edesc->bmAttributes & UE_XFERTYPE) { 398 case UE_INTERRUPT: 399 if (dir == OUT) { 400 err = usbd_open_pipe(sce->iface, 401 edesc->bEndpointAddress, 0, &sce->pipeh); 402 if (err) 403 return (EIO); 404 break; 405 } 406 isize = UGETW(edesc->wMaxPacketSize); 407 if (isize == 0) /* shouldn't happen */ 408 return (EINVAL); 409 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 410 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 411 endpt, isize)); 412 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 413 return (ENOMEM); 414 err = usbd_open_pipe_intr(sce->iface, 415 edesc->bEndpointAddress, 416 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 417 sce->ibuf, isize, ugenintr, 418 USBD_DEFAULT_INTERVAL); 419 if (err) { 420 free(sce->ibuf, M_USBDEV); 421 clfree(&sce->q); 422 return (EIO); 423 } 424 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 425 break; 426 case UE_BULK: 427 err = usbd_open_pipe(sce->iface, 428 edesc->bEndpointAddress, 0, &sce->pipeh); 429 if (err) 430 return (EIO); 431 #ifdef UGEN_BULK_RA_WB 432 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 433 /* 434 * Use request size for non-RA/WB transfers 435 * as the default. 436 */ 437 sce->ra_wb_reqsize = UGEN_BBSIZE; 438 #endif 439 break; 440 case UE_ISOCHRONOUS: 441 if (dir == OUT) 442 return (EINVAL); 443 isize = UGETW(edesc->wMaxPacketSize); 444 if (isize == 0) /* shouldn't happen */ 445 return (EINVAL); 446 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 447 M_USBDEV, M_WAITOK); 448 sce->cur = sce->fill = sce->ibuf; 449 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 450 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 451 endpt, isize)); 452 err = usbd_open_pipe(sce->iface, 453 edesc->bEndpointAddress, 0, &sce->pipeh); 454 if (err) { 455 free(sce->ibuf, M_USBDEV); 456 return (EIO); 457 } 458 for(i = 0; i < UGEN_NISOREQS; ++i) { 459 sce->isoreqs[i].sce = sce; 460 xfer = usbd_alloc_xfer(sc->sc_udev); 461 if (xfer == 0) 462 goto bad; 463 sce->isoreqs[i].xfer = xfer; 464 tbuf = usbd_alloc_buffer 465 (xfer, isize * UGEN_NISORFRMS); 466 if (tbuf == 0) { 467 i++; 468 goto bad; 469 } 470 sce->isoreqs[i].dmabuf = tbuf; 471 for(j = 0; j < UGEN_NISORFRMS; ++j) 472 sce->isoreqs[i].sizes[j] = isize; 473 usbd_setup_isoc_xfer 474 (xfer, sce->pipeh, &sce->isoreqs[i], 475 sce->isoreqs[i].sizes, 476 UGEN_NISORFRMS, USBD_NO_COPY, 477 ugen_isoc_rintr); 478 (void)usbd_transfer(xfer); 479 } 480 DPRINTFN(5, ("ugenopen: isoc open done\n")); 481 break; 482 bad: 483 while (--i >= 0) /* implicit buffer free */ 484 usbd_free_xfer(sce->isoreqs[i].xfer); 485 return (ENOMEM); 486 case UE_CONTROL: 487 sce->timeout = USBD_DEFAULT_TIMEOUT; 488 return (EINVAL); 489 } 490 } 491 sc->sc_is_open[endpt] = 1; 492 return (0); 493 } 494 495 int 496 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 497 { 498 int endpt = UGENENDPOINT(dev); 499 struct ugen_softc *sc; 500 struct ugen_endpoint *sce; 501 int dir; 502 int i; 503 504 USB_GET_SC(ugen, UGENUNIT(dev), sc); 505 506 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 507 flag, mode, UGENUNIT(dev), endpt)); 508 509 #ifdef DIAGNOSTIC 510 if (!sc->sc_is_open[endpt]) { 511 printf("ugenclose: not open\n"); 512 return (EINVAL); 513 } 514 #endif 515 516 if (endpt == USB_CONTROL_ENDPOINT) { 517 DPRINTFN(5, ("ugenclose: close control\n")); 518 sc->sc_is_open[endpt] = 0; 519 return (0); 520 } 521 522 for (dir = OUT; dir <= IN; dir++) { 523 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 524 continue; 525 sce = &sc->sc_endpoints[endpt][dir]; 526 if (sce == NULL || sce->pipeh == NULL) 527 continue; 528 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 529 endpt, dir, sce)); 530 531 usbd_abort_pipe(sce->pipeh); 532 usbd_close_pipe(sce->pipeh); 533 sce->pipeh = NULL; 534 535 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 536 case UE_INTERRUPT: 537 ndflush(&sce->q, sce->q.c_cc); 538 clfree(&sce->q); 539 break; 540 case UE_ISOCHRONOUS: 541 for (i = 0; i < UGEN_NISOREQS; ++i) 542 usbd_free_xfer(sce->isoreqs[i].xfer); 543 break; 544 #ifdef UGEN_BULK_RA_WB 545 case UE_BULK: 546 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 547 /* ibuf freed below */ 548 usbd_free_xfer(sce->ra_wb_xfer); 549 break; 550 #endif 551 default: 552 break; 553 } 554 555 if (sce->ibuf != NULL) { 556 free(sce->ibuf, M_USBDEV); 557 sce->ibuf = NULL; 558 clfree(&sce->q); 559 } 560 } 561 sc->sc_is_open[endpt] = 0; 562 563 return (0); 564 } 565 566 Static int 567 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 568 { 569 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 570 u_int32_t n, tn; 571 usbd_xfer_handle xfer; 572 usbd_status err; 573 int s; 574 int error = 0; 575 576 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 577 578 if (sc->sc_dying) 579 return (EIO); 580 581 if (endpt == USB_CONTROL_ENDPOINT) 582 return (ENODEV); 583 584 #ifdef DIAGNOSTIC 585 if (sce->edesc == NULL) { 586 printf("ugenread: no edesc\n"); 587 return (EIO); 588 } 589 if (sce->pipeh == NULL) { 590 printf("ugenread: no pipe\n"); 591 return (EIO); 592 } 593 #endif 594 595 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 596 case UE_INTERRUPT: 597 /* Block until activity occurred. */ 598 s = splusb(); 599 while (sce->q.c_cc == 0) { 600 if (flag & IO_NDELAY) { 601 splx(s); 602 return (EWOULDBLOCK); 603 } 604 sce->state |= UGEN_ASLP; 605 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 606 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 607 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 608 if (sc->sc_dying) 609 error = EIO; 610 if (error) { 611 sce->state &= ~UGEN_ASLP; 612 break; 613 } 614 } 615 splx(s); 616 617 /* Transfer as many chunks as possible. */ 618 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 619 n = min(sce->q.c_cc, uio->uio_resid); 620 if (n > sizeof(sc->sc_buffer)) 621 n = sizeof(sc->sc_buffer); 622 623 /* Remove a small chunk from the input queue. */ 624 q_to_b(&sce->q, sc->sc_buffer, n); 625 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 626 627 /* Copy the data to the user process. */ 628 error = uiomove(sc->sc_buffer, n, uio); 629 if (error) 630 break; 631 } 632 break; 633 case UE_BULK: 634 #ifdef UGEN_BULK_RA_WB 635 if (sce->state & UGEN_BULK_RA) { 636 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 637 uio->uio_resid, sce->ra_wb_used)); 638 xfer = sce->ra_wb_xfer; 639 640 s = splusb(); 641 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 642 splx(s); 643 return (EWOULDBLOCK); 644 } 645 while (uio->uio_resid > 0 && !error) { 646 while (sce->ra_wb_used == 0) { 647 sce->state |= UGEN_ASLP; 648 DPRINTFN(5, 649 ("ugenread: sleep on %p\n", 650 sce)); 651 error = tsleep(sce, PZERO | PCATCH, 652 "ugenrb", 0); 653 DPRINTFN(5, 654 ("ugenread: woke, error=%d\n", 655 error)); 656 if (sc->sc_dying) 657 error = EIO; 658 if (error) { 659 sce->state &= ~UGEN_ASLP; 660 break; 661 } 662 } 663 664 /* Copy data to the process. */ 665 while (uio->uio_resid > 0 666 && sce->ra_wb_used > 0) { 667 n = min(uio->uio_resid, 668 sce->ra_wb_used); 669 n = min(n, sce->limit - sce->cur); 670 error = uiomove(sce->cur, n, uio); 671 if (error) 672 break; 673 sce->cur += n; 674 sce->ra_wb_used -= n; 675 if (sce->cur == sce->limit) 676 sce->cur = sce->ibuf; 677 } 678 679 /* 680 * If the transfers stopped because the 681 * buffer was full, restart them. 682 */ 683 if (sce->state & UGEN_RA_WB_STOP && 684 sce->ra_wb_used < sce->limit - sce->ibuf) { 685 n = (sce->limit - sce->ibuf) 686 - sce->ra_wb_used; 687 usbd_setup_xfer(xfer, 688 sce->pipeh, sce, NULL, 689 min(n, sce->ra_wb_xferlen), 690 USBD_NO_COPY, USBD_NO_TIMEOUT, 691 ugen_bulkra_intr); 692 sce->state &= ~UGEN_RA_WB_STOP; 693 err = usbd_transfer(xfer); 694 if (err != USBD_IN_PROGRESS) 695 /* 696 * The transfer has not been 697 * queued. Setting STOP 698 * will make us try 699 * again at the next read. 700 */ 701 sce->state |= UGEN_RA_WB_STOP; 702 } 703 } 704 splx(s); 705 break; 706 } 707 #endif 708 xfer = usbd_alloc_xfer(sc->sc_udev); 709 if (xfer == 0) 710 return (ENOMEM); 711 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 712 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 713 tn = n; 714 err = usbd_bulk_transfer( 715 xfer, sce->pipeh, 716 sce->state & UGEN_SHORT_OK ? 717 USBD_SHORT_XFER_OK : 0, 718 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 719 if (err) { 720 if (err == USBD_INTERRUPTED) 721 error = EINTR; 722 else if (err == USBD_TIMEOUT) 723 error = ETIMEDOUT; 724 else 725 error = EIO; 726 break; 727 } 728 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 729 error = uiomove(sc->sc_buffer, tn, uio); 730 if (error || tn < n) 731 break; 732 } 733 usbd_free_xfer(xfer); 734 break; 735 case UE_ISOCHRONOUS: 736 s = splusb(); 737 while (sce->cur == sce->fill) { 738 if (flag & IO_NDELAY) { 739 splx(s); 740 return (EWOULDBLOCK); 741 } 742 sce->state |= UGEN_ASLP; 743 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 744 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 745 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 746 if (sc->sc_dying) 747 error = EIO; 748 if (error) { 749 sce->state &= ~UGEN_ASLP; 750 break; 751 } 752 } 753 754 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 755 if(sce->fill > sce->cur) 756 n = min(sce->fill - sce->cur, uio->uio_resid); 757 else 758 n = min(sce->limit - sce->cur, uio->uio_resid); 759 760 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 761 762 /* Copy the data to the user process. */ 763 error = uiomove(sce->cur, n, uio); 764 if (error) 765 break; 766 sce->cur += n; 767 if(sce->cur >= sce->limit) 768 sce->cur = sce->ibuf; 769 } 770 splx(s); 771 break; 772 773 774 default: 775 return (ENXIO); 776 } 777 return (error); 778 } 779 780 int 781 ugenread(dev_t dev, struct uio *uio, int flag) 782 { 783 int endpt = UGENENDPOINT(dev); 784 struct ugen_softc *sc; 785 int error; 786 787 USB_GET_SC(ugen, UGENUNIT(dev), sc); 788 789 sc->sc_refcnt++; 790 error = ugen_do_read(sc, endpt, uio, flag); 791 if (--sc->sc_refcnt < 0) 792 usb_detach_wakeup(USBDEV(sc->sc_dev)); 793 return (error); 794 } 795 796 Static int 797 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 798 int flag) 799 { 800 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 801 u_int32_t n; 802 int error = 0; 803 #ifdef UGEN_BULK_RA_WB 804 int s; 805 u_int32_t tn; 806 char *dbuf; 807 #endif 808 usbd_xfer_handle xfer; 809 usbd_status err; 810 811 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 812 813 if (sc->sc_dying) 814 return (EIO); 815 816 if (endpt == USB_CONTROL_ENDPOINT) 817 return (ENODEV); 818 819 #ifdef DIAGNOSTIC 820 if (sce->edesc == NULL) { 821 printf("ugenwrite: no edesc\n"); 822 return (EIO); 823 } 824 if (sce->pipeh == NULL) { 825 printf("ugenwrite: no pipe\n"); 826 return (EIO); 827 } 828 #endif 829 830 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 831 case UE_BULK: 832 #ifdef UGEN_BULK_RA_WB 833 if (sce->state & UGEN_BULK_WB) { 834 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 835 uio->uio_resid, sce->ra_wb_used)); 836 xfer = sce->ra_wb_xfer; 837 838 s = splusb(); 839 if (sce->ra_wb_used == sce->limit - sce->ibuf && 840 flag & IO_NDELAY) { 841 splx(s); 842 return (EWOULDBLOCK); 843 } 844 while (uio->uio_resid > 0 && !error) { 845 while (sce->ra_wb_used == 846 sce->limit - sce->ibuf) { 847 sce->state |= UGEN_ASLP; 848 DPRINTFN(5, 849 ("ugenwrite: sleep on %p\n", 850 sce)); 851 error = tsleep(sce, PZERO | PCATCH, 852 "ugenwb", 0); 853 DPRINTFN(5, 854 ("ugenwrite: woke, error=%d\n", 855 error)); 856 if (sc->sc_dying) 857 error = EIO; 858 if (error) { 859 sce->state &= ~UGEN_ASLP; 860 break; 861 } 862 } 863 864 /* Copy data from the process. */ 865 while (uio->uio_resid > 0 && 866 sce->ra_wb_used < sce->limit - sce->ibuf) { 867 n = min(uio->uio_resid, 868 (sce->limit - sce->ibuf) 869 - sce->ra_wb_used); 870 n = min(n, sce->limit - sce->fill); 871 error = uiomove(sce->fill, n, uio); 872 if (error) 873 break; 874 sce->fill += n; 875 sce->ra_wb_used += n; 876 if (sce->fill == sce->limit) 877 sce->fill = sce->ibuf; 878 } 879 880 /* 881 * If the transfers stopped because the 882 * buffer was empty, restart them. 883 */ 884 if (sce->state & UGEN_RA_WB_STOP && 885 sce->ra_wb_used > 0) { 886 dbuf = (char *)usbd_get_buffer(xfer); 887 n = min(sce->ra_wb_used, 888 sce->ra_wb_xferlen); 889 tn = min(n, sce->limit - sce->cur); 890 memcpy(dbuf, sce->cur, tn); 891 dbuf += tn; 892 if (n - tn > 0) 893 memcpy(dbuf, sce->ibuf, 894 n - tn); 895 usbd_setup_xfer(xfer, 896 sce->pipeh, sce, NULL, n, 897 USBD_NO_COPY, USBD_NO_TIMEOUT, 898 ugen_bulkwb_intr); 899 sce->state &= ~UGEN_RA_WB_STOP; 900 err = usbd_transfer(xfer); 901 if (err != USBD_IN_PROGRESS) 902 /* 903 * The transfer has not been 904 * queued. Setting STOP 905 * will make us try again 906 * at the next read. 907 */ 908 sce->state |= UGEN_RA_WB_STOP; 909 } 910 } 911 splx(s); 912 break; 913 } 914 #endif 915 xfer = usbd_alloc_xfer(sc->sc_udev); 916 if (xfer == 0) 917 return (EIO); 918 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 919 error = uiomove(sc->sc_buffer, n, uio); 920 if (error) 921 break; 922 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 923 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 924 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 925 if (err) { 926 if (err == USBD_INTERRUPTED) 927 error = EINTR; 928 else if (err == USBD_TIMEOUT) 929 error = ETIMEDOUT; 930 else 931 error = EIO; 932 break; 933 } 934 } 935 usbd_free_xfer(xfer); 936 break; 937 case UE_INTERRUPT: 938 xfer = usbd_alloc_xfer(sc->sc_udev); 939 if (xfer == 0) 940 return (EIO); 941 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 942 uio->uio_resid)) != 0) { 943 error = uiomove(sc->sc_buffer, n, uio); 944 if (error) 945 break; 946 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 947 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 948 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 949 if (err) { 950 if (err == USBD_INTERRUPTED) 951 error = EINTR; 952 else if (err == USBD_TIMEOUT) 953 error = ETIMEDOUT; 954 else 955 error = EIO; 956 break; 957 } 958 } 959 usbd_free_xfer(xfer); 960 break; 961 default: 962 return (ENXIO); 963 } 964 return (error); 965 } 966 967 int 968 ugenwrite(dev_t dev, struct uio *uio, int flag) 969 { 970 int endpt = UGENENDPOINT(dev); 971 struct ugen_softc *sc; 972 int error; 973 974 USB_GET_SC(ugen, UGENUNIT(dev), sc); 975 976 sc->sc_refcnt++; 977 error = ugen_do_write(sc, endpt, uio, flag); 978 if (--sc->sc_refcnt < 0) 979 usb_detach_wakeup(USBDEV(sc->sc_dev)); 980 return (error); 981 } 982 983 #if defined(__NetBSD__) || defined(__OpenBSD__) 984 int 985 ugen_activate(device_ptr_t self, enum devact act) 986 { 987 struct ugen_softc *sc = device_private(self); 988 989 switch (act) { 990 case DVACT_ACTIVATE: 991 return (EOPNOTSUPP); 992 993 case DVACT_DEACTIVATE: 994 sc->sc_dying = 1; 995 break; 996 } 997 return (0); 998 } 999 #endif 1000 1001 USB_DETACH(ugen) 1002 { 1003 USB_DETACH_START(ugen, sc); 1004 struct ugen_endpoint *sce; 1005 int i, dir; 1006 int s; 1007 #if defined(__NetBSD__) || defined(__OpenBSD__) 1008 int maj, mn; 1009 1010 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1011 #elif defined(__FreeBSD__) 1012 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1013 #endif 1014 1015 sc->sc_dying = 1; 1016 pmf_device_deregister(self); 1017 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1018 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1019 for (dir = OUT; dir <= IN; dir++) { 1020 sce = &sc->sc_endpoints[i][dir]; 1021 if (sce && sce->pipeh) 1022 usbd_abort_pipe(sce->pipeh); 1023 } 1024 } 1025 1026 s = splusb(); 1027 if (--sc->sc_refcnt >= 0) { 1028 /* Wake everyone */ 1029 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1030 wakeup(&sc->sc_endpoints[i][IN]); 1031 /* Wait for processes to go away. */ 1032 usb_detach_wait(USBDEV(sc->sc_dev)); 1033 } 1034 splx(s); 1035 1036 #if defined(__NetBSD__) || defined(__OpenBSD__) 1037 /* locate the major number */ 1038 #if defined(__NetBSD__) 1039 maj = cdevsw_lookup_major(&ugen_cdevsw); 1040 #elif defined(__OpenBSD__) 1041 for (maj = 0; maj < nchrdev; maj++) 1042 if (cdevsw[maj].d_open == ugenopen) 1043 break; 1044 #endif 1045 1046 /* Nuke the vnodes for any open instances (calls close). */ 1047 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1048 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1049 #elif defined(__FreeBSD__) 1050 /* XXX not implemented yet */ 1051 #endif 1052 1053 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1054 USBDEV(sc->sc_dev)); 1055 1056 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1057 for (dir = OUT; dir <= IN; dir++) { 1058 sce = &sc->sc_endpoints[i][dir]; 1059 seldestroy(&sce->rsel); 1060 } 1061 } 1062 1063 return (0); 1064 } 1065 1066 Static void 1067 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1068 { 1069 struct ugen_endpoint *sce = addr; 1070 /*struct ugen_softc *sc = sce->sc;*/ 1071 u_int32_t count; 1072 u_char *ibuf; 1073 1074 if (status == USBD_CANCELLED) 1075 return; 1076 1077 if (status != USBD_NORMAL_COMPLETION) { 1078 DPRINTF(("ugenintr: status=%d\n", status)); 1079 if (status == USBD_STALLED) 1080 usbd_clear_endpoint_stall_async(sce->pipeh); 1081 return; 1082 } 1083 1084 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1085 ibuf = sce->ibuf; 1086 1087 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1088 xfer, status, count)); 1089 DPRINTFN(5, (" data = %02x %02x %02x\n", 1090 ibuf[0], ibuf[1], ibuf[2])); 1091 1092 (void)b_to_q(ibuf, count, &sce->q); 1093 1094 if (sce->state & UGEN_ASLP) { 1095 sce->state &= ~UGEN_ASLP; 1096 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1097 wakeup(sce); 1098 } 1099 selnotify(&sce->rsel, 0, 0); 1100 } 1101 1102 Static void 1103 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1104 usbd_status status) 1105 { 1106 struct isoreq *req = addr; 1107 struct ugen_endpoint *sce = req->sce; 1108 u_int32_t count, n; 1109 int i, isize; 1110 1111 /* Return if we are aborting. */ 1112 if (status == USBD_CANCELLED) 1113 return; 1114 1115 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1116 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1117 (long)(req - sce->isoreqs), count)); 1118 1119 /* throw away oldest input if the buffer is full */ 1120 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1121 sce->cur += count; 1122 if(sce->cur >= sce->limit) 1123 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1124 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1125 count)); 1126 } 1127 1128 isize = UGETW(sce->edesc->wMaxPacketSize); 1129 for (i = 0; i < UGEN_NISORFRMS; i++) { 1130 u_int32_t actlen = req->sizes[i]; 1131 char const *tbuf = (char const *)req->dmabuf + isize * i; 1132 1133 /* copy data to buffer */ 1134 while (actlen > 0) { 1135 n = min(actlen, sce->limit - sce->fill); 1136 memcpy(sce->fill, tbuf, n); 1137 1138 tbuf += n; 1139 actlen -= n; 1140 sce->fill += n; 1141 if(sce->fill == sce->limit) 1142 sce->fill = sce->ibuf; 1143 } 1144 1145 /* setup size for next transfer */ 1146 req->sizes[i] = isize; 1147 } 1148 1149 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1150 USBD_NO_COPY, ugen_isoc_rintr); 1151 (void)usbd_transfer(xfer); 1152 1153 if (sce->state & UGEN_ASLP) { 1154 sce->state &= ~UGEN_ASLP; 1155 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1156 wakeup(sce); 1157 } 1158 selnotify(&sce->rsel, 0, 0); 1159 } 1160 1161 #ifdef UGEN_BULK_RA_WB 1162 Static void 1163 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1164 usbd_status status) 1165 { 1166 struct ugen_endpoint *sce = addr; 1167 u_int32_t count, n; 1168 char const *tbuf; 1169 usbd_status err; 1170 1171 /* Return if we are aborting. */ 1172 if (status == USBD_CANCELLED) 1173 return; 1174 1175 if (status != USBD_NORMAL_COMPLETION) { 1176 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1177 sce->state |= UGEN_RA_WB_STOP; 1178 if (status == USBD_STALLED) 1179 usbd_clear_endpoint_stall_async(sce->pipeh); 1180 return; 1181 } 1182 1183 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1184 1185 /* Keep track of how much is in the buffer. */ 1186 sce->ra_wb_used += count; 1187 1188 /* Copy data to buffer. */ 1189 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1190 n = min(count, sce->limit - sce->fill); 1191 memcpy(sce->fill, tbuf, n); 1192 tbuf += n; 1193 count -= n; 1194 sce->fill += n; 1195 if (sce->fill == sce->limit) 1196 sce->fill = sce->ibuf; 1197 if (count > 0) { 1198 memcpy(sce->fill, tbuf, count); 1199 sce->fill += count; 1200 } 1201 1202 /* Set up the next request if necessary. */ 1203 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1204 if (n > 0) { 1205 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1206 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1207 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1208 err = usbd_transfer(xfer); 1209 if (err != USBD_IN_PROGRESS) { 1210 printf("usbd_bulkra_intr: error=%d\n", err); 1211 /* 1212 * The transfer has not been queued. Setting STOP 1213 * will make us try again at the next read. 1214 */ 1215 sce->state |= UGEN_RA_WB_STOP; 1216 } 1217 } 1218 else 1219 sce->state |= UGEN_RA_WB_STOP; 1220 1221 if (sce->state & UGEN_ASLP) { 1222 sce->state &= ~UGEN_ASLP; 1223 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1224 wakeup(sce); 1225 } 1226 selnotify(&sce->rsel, 0, 0); 1227 } 1228 1229 Static void 1230 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1231 usbd_status status) 1232 { 1233 struct ugen_endpoint *sce = addr; 1234 u_int32_t count, n; 1235 char *tbuf; 1236 usbd_status err; 1237 1238 /* Return if we are aborting. */ 1239 if (status == USBD_CANCELLED) 1240 return; 1241 1242 if (status != USBD_NORMAL_COMPLETION) { 1243 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1244 sce->state |= UGEN_RA_WB_STOP; 1245 if (status == USBD_STALLED) 1246 usbd_clear_endpoint_stall_async(sce->pipeh); 1247 return; 1248 } 1249 1250 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1251 1252 /* Keep track of how much is in the buffer. */ 1253 sce->ra_wb_used -= count; 1254 1255 /* Update buffer pointers. */ 1256 sce->cur += count; 1257 if (sce->cur >= sce->limit) 1258 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1259 1260 /* Set up next request if necessary. */ 1261 if (sce->ra_wb_used > 0) { 1262 /* copy data from buffer */ 1263 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1264 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1265 n = min(count, sce->limit - sce->cur); 1266 memcpy(tbuf, sce->cur, n); 1267 tbuf += n; 1268 if (count - n > 0) 1269 memcpy(tbuf, sce->ibuf, count - n); 1270 1271 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1272 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1273 err = usbd_transfer(xfer); 1274 if (err != USBD_IN_PROGRESS) { 1275 printf("usbd_bulkwb_intr: error=%d\n", err); 1276 /* 1277 * The transfer has not been queued. Setting STOP 1278 * will make us try again at the next write. 1279 */ 1280 sce->state |= UGEN_RA_WB_STOP; 1281 } 1282 } 1283 else 1284 sce->state |= UGEN_RA_WB_STOP; 1285 1286 if (sce->state & UGEN_ASLP) { 1287 sce->state &= ~UGEN_ASLP; 1288 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1289 wakeup(sce); 1290 } 1291 selnotify(&sce->rsel, 0, 0); 1292 } 1293 #endif 1294 1295 Static usbd_status 1296 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1297 { 1298 usbd_interface_handle iface; 1299 usb_endpoint_descriptor_t *ed; 1300 usbd_status err; 1301 struct ugen_endpoint *sce; 1302 u_int8_t niface, nendpt, endptno, endpt; 1303 int dir; 1304 1305 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1306 1307 err = usbd_interface_count(sc->sc_udev, &niface); 1308 if (err) 1309 return (err); 1310 if (ifaceidx < 0 || ifaceidx >= niface) 1311 return (USBD_INVAL); 1312 1313 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1314 if (err) 1315 return (err); 1316 err = usbd_endpoint_count(iface, &nendpt); 1317 if (err) 1318 return (err); 1319 /* XXX should only do this after setting new altno has succeeded */ 1320 for (endptno = 0; endptno < nendpt; endptno++) { 1321 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1322 endpt = ed->bEndpointAddress; 1323 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1324 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1325 sce->sc = 0; 1326 sce->edesc = 0; 1327 sce->iface = 0; 1328 } 1329 1330 /* change setting */ 1331 err = usbd_set_interface(iface, altno); 1332 if (err) 1333 return (err); 1334 1335 err = usbd_endpoint_count(iface, &nendpt); 1336 if (err) 1337 return (err); 1338 for (endptno = 0; endptno < nendpt; endptno++) { 1339 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1340 KASSERT(ed != NULL); 1341 endpt = ed->bEndpointAddress; 1342 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1343 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1344 sce->sc = sc; 1345 sce->edesc = ed; 1346 sce->iface = iface; 1347 } 1348 return (0); 1349 } 1350 1351 /* Retrieve a complete descriptor for a certain device and index. */ 1352 Static usb_config_descriptor_t * 1353 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1354 { 1355 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1356 int len; 1357 usbd_status err; 1358 1359 if (index == USB_CURRENT_CONFIG_INDEX) { 1360 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1361 len = UGETW(tdesc->wTotalLength); 1362 if (lenp) 1363 *lenp = len; 1364 cdesc = malloc(len, M_TEMP, M_WAITOK); 1365 memcpy(cdesc, tdesc, len); 1366 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1367 } else { 1368 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1369 if (err) 1370 return (0); 1371 len = UGETW(cdescr.wTotalLength); 1372 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1373 if (lenp) 1374 *lenp = len; 1375 cdesc = malloc(len, M_TEMP, M_WAITOK); 1376 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1377 if (err) { 1378 free(cdesc, M_TEMP); 1379 return (0); 1380 } 1381 } 1382 return (cdesc); 1383 } 1384 1385 Static int 1386 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1387 { 1388 usbd_interface_handle iface; 1389 usbd_status err; 1390 1391 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1392 if (err) 1393 return (-1); 1394 return (usbd_get_interface_altindex(iface)); 1395 } 1396 1397 Static int 1398 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1399 void *addr, int flag, struct lwp *l) 1400 { 1401 struct ugen_endpoint *sce; 1402 usbd_status err; 1403 usbd_interface_handle iface; 1404 struct usb_config_desc *cd; 1405 usb_config_descriptor_t *cdesc; 1406 struct usb_interface_desc *id; 1407 usb_interface_descriptor_t *idesc; 1408 struct usb_endpoint_desc *ed; 1409 usb_endpoint_descriptor_t *edesc; 1410 struct usb_alt_interface *ai; 1411 struct usb_string_desc *si; 1412 u_int8_t conf, alt; 1413 1414 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1415 if (sc->sc_dying) 1416 return (EIO); 1417 1418 switch (cmd) { 1419 case FIONBIO: 1420 /* All handled in the upper FS layer. */ 1421 return (0); 1422 case USB_SET_SHORT_XFER: 1423 if (endpt == USB_CONTROL_ENDPOINT) 1424 return (EINVAL); 1425 /* This flag only affects read */ 1426 sce = &sc->sc_endpoints[endpt][IN]; 1427 if (sce == NULL || sce->pipeh == NULL) 1428 return (EINVAL); 1429 if (*(int *)addr) 1430 sce->state |= UGEN_SHORT_OK; 1431 else 1432 sce->state &= ~UGEN_SHORT_OK; 1433 return (0); 1434 case USB_SET_TIMEOUT: 1435 sce = &sc->sc_endpoints[endpt][IN]; 1436 if (sce == NULL 1437 /* XXX this shouldn't happen, but the distinction between 1438 input and output pipes isn't clear enough. 1439 || sce->pipeh == NULL */ 1440 ) 1441 return (EINVAL); 1442 sce->timeout = *(int *)addr; 1443 return (0); 1444 case USB_SET_BULK_RA: 1445 #ifdef UGEN_BULK_RA_WB 1446 if (endpt == USB_CONTROL_ENDPOINT) 1447 return (EINVAL); 1448 sce = &sc->sc_endpoints[endpt][IN]; 1449 if (sce == NULL || sce->pipeh == NULL) 1450 return (EINVAL); 1451 edesc = sce->edesc; 1452 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1453 return (EINVAL); 1454 1455 if (*(int *)addr) { 1456 /* Only turn RA on if it's currently off. */ 1457 if (sce->state & UGEN_BULK_RA) 1458 return (0); 1459 1460 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1461 /* shouldn't happen */ 1462 return (EINVAL); 1463 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1464 if (sce->ra_wb_xfer == NULL) 1465 return (ENOMEM); 1466 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1467 /* 1468 * Set up a dmabuf because we reuse the xfer with 1469 * the same (max) request length like isoc. 1470 */ 1471 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1472 sce->ra_wb_xferlen) == 0) { 1473 usbd_free_xfer(sce->ra_wb_xfer); 1474 return (ENOMEM); 1475 } 1476 sce->ibuf = malloc(sce->ra_wb_bufsize, 1477 M_USBDEV, M_WAITOK); 1478 sce->fill = sce->cur = sce->ibuf; 1479 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1480 sce->ra_wb_used = 0; 1481 sce->state |= UGEN_BULK_RA; 1482 sce->state &= ~UGEN_RA_WB_STOP; 1483 /* Now start reading. */ 1484 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1485 NULL, 1486 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1487 USBD_NO_COPY, USBD_NO_TIMEOUT, 1488 ugen_bulkra_intr); 1489 err = usbd_transfer(sce->ra_wb_xfer); 1490 if (err != USBD_IN_PROGRESS) { 1491 sce->state &= ~UGEN_BULK_RA; 1492 free(sce->ibuf, M_USBDEV); 1493 sce->ibuf = NULL; 1494 usbd_free_xfer(sce->ra_wb_xfer); 1495 return (EIO); 1496 } 1497 } else { 1498 /* Only turn RA off if it's currently on. */ 1499 if (!(sce->state & UGEN_BULK_RA)) 1500 return (0); 1501 1502 sce->state &= ~UGEN_BULK_RA; 1503 usbd_abort_pipe(sce->pipeh); 1504 usbd_free_xfer(sce->ra_wb_xfer); 1505 /* 1506 * XXX Discard whatever's in the buffer, but we 1507 * should keep it around and drain the buffer 1508 * instead. 1509 */ 1510 free(sce->ibuf, M_USBDEV); 1511 sce->ibuf = NULL; 1512 } 1513 return (0); 1514 #else 1515 return (EOPNOTSUPP); 1516 #endif 1517 case USB_SET_BULK_WB: 1518 #ifdef UGEN_BULK_RA_WB 1519 if (endpt == USB_CONTROL_ENDPOINT) 1520 return (EINVAL); 1521 sce = &sc->sc_endpoints[endpt][OUT]; 1522 if (sce == NULL || sce->pipeh == NULL) 1523 return (EINVAL); 1524 edesc = sce->edesc; 1525 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1526 return (EINVAL); 1527 1528 if (*(int *)addr) { 1529 /* Only turn WB on if it's currently off. */ 1530 if (sce->state & UGEN_BULK_WB) 1531 return (0); 1532 1533 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1534 /* shouldn't happen */ 1535 return (EINVAL); 1536 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1537 if (sce->ra_wb_xfer == NULL) 1538 return (ENOMEM); 1539 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1540 /* 1541 * Set up a dmabuf because we reuse the xfer with 1542 * the same (max) request length like isoc. 1543 */ 1544 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1545 sce->ra_wb_xferlen) == 0) { 1546 usbd_free_xfer(sce->ra_wb_xfer); 1547 return (ENOMEM); 1548 } 1549 sce->ibuf = malloc(sce->ra_wb_bufsize, 1550 M_USBDEV, M_WAITOK); 1551 sce->fill = sce->cur = sce->ibuf; 1552 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1553 sce->ra_wb_used = 0; 1554 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1555 } else { 1556 /* Only turn WB off if it's currently on. */ 1557 if (!(sce->state & UGEN_BULK_WB)) 1558 return (0); 1559 1560 sce->state &= ~UGEN_BULK_WB; 1561 /* 1562 * XXX Discard whatever's in the buffer, but we 1563 * should keep it around and keep writing to 1564 * drain the buffer instead. 1565 */ 1566 usbd_abort_pipe(sce->pipeh); 1567 usbd_free_xfer(sce->ra_wb_xfer); 1568 free(sce->ibuf, M_USBDEV); 1569 sce->ibuf = NULL; 1570 } 1571 return (0); 1572 #else 1573 return (EOPNOTSUPP); 1574 #endif 1575 case USB_SET_BULK_RA_OPT: 1576 case USB_SET_BULK_WB_OPT: 1577 #ifdef UGEN_BULK_RA_WB 1578 { 1579 struct usb_bulk_ra_wb_opt *opt; 1580 1581 if (endpt == USB_CONTROL_ENDPOINT) 1582 return (EINVAL); 1583 opt = (struct usb_bulk_ra_wb_opt *)addr; 1584 if (cmd == USB_SET_BULK_RA_OPT) 1585 sce = &sc->sc_endpoints[endpt][IN]; 1586 else 1587 sce = &sc->sc_endpoints[endpt][OUT]; 1588 if (sce == NULL || sce->pipeh == NULL) 1589 return (EINVAL); 1590 if (opt->ra_wb_buffer_size < 1 || 1591 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1592 opt->ra_wb_request_size < 1 || 1593 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1594 return (EINVAL); 1595 /* 1596 * XXX These changes do not take effect until the 1597 * next time RA/WB mode is enabled but they ought to 1598 * take effect immediately. 1599 */ 1600 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1601 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1602 return (0); 1603 } 1604 #else 1605 return (EOPNOTSUPP); 1606 #endif 1607 default: 1608 break; 1609 } 1610 1611 if (endpt != USB_CONTROL_ENDPOINT) 1612 return (EINVAL); 1613 1614 switch (cmd) { 1615 #ifdef UGEN_DEBUG 1616 case USB_SETDEBUG: 1617 ugendebug = *(int *)addr; 1618 break; 1619 #endif 1620 case USB_GET_CONFIG: 1621 err = usbd_get_config(sc->sc_udev, &conf); 1622 if (err) 1623 return (EIO); 1624 *(int *)addr = conf; 1625 break; 1626 case USB_SET_CONFIG: 1627 if (!(flag & FWRITE)) 1628 return (EPERM); 1629 err = ugen_set_config(sc, *(int *)addr); 1630 switch (err) { 1631 case USBD_NORMAL_COMPLETION: 1632 break; 1633 case USBD_IN_USE: 1634 return (EBUSY); 1635 default: 1636 return (EIO); 1637 } 1638 break; 1639 case USB_GET_ALTINTERFACE: 1640 ai = (struct usb_alt_interface *)addr; 1641 err = usbd_device2interface_handle(sc->sc_udev, 1642 ai->uai_interface_index, &iface); 1643 if (err) 1644 return (EINVAL); 1645 idesc = usbd_get_interface_descriptor(iface); 1646 if (idesc == NULL) 1647 return (EIO); 1648 ai->uai_alt_no = idesc->bAlternateSetting; 1649 break; 1650 case USB_SET_ALTINTERFACE: 1651 if (!(flag & FWRITE)) 1652 return (EPERM); 1653 ai = (struct usb_alt_interface *)addr; 1654 err = usbd_device2interface_handle(sc->sc_udev, 1655 ai->uai_interface_index, &iface); 1656 if (err) 1657 return (EINVAL); 1658 err = ugen_set_interface(sc, ai->uai_interface_index, 1659 ai->uai_alt_no); 1660 if (err) 1661 return (EINVAL); 1662 break; 1663 case USB_GET_NO_ALT: 1664 ai = (struct usb_alt_interface *)addr; 1665 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1666 if (cdesc == NULL) 1667 return (EINVAL); 1668 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1669 if (idesc == NULL) { 1670 free(cdesc, M_TEMP); 1671 return (EINVAL); 1672 } 1673 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1674 idesc->bInterfaceNumber); 1675 free(cdesc, M_TEMP); 1676 break; 1677 case USB_GET_DEVICE_DESC: 1678 *(usb_device_descriptor_t *)addr = 1679 *usbd_get_device_descriptor(sc->sc_udev); 1680 break; 1681 case USB_GET_CONFIG_DESC: 1682 cd = (struct usb_config_desc *)addr; 1683 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1684 if (cdesc == NULL) 1685 return (EINVAL); 1686 cd->ucd_desc = *cdesc; 1687 free(cdesc, M_TEMP); 1688 break; 1689 case USB_GET_INTERFACE_DESC: 1690 id = (struct usb_interface_desc *)addr; 1691 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1692 if (cdesc == NULL) 1693 return (EINVAL); 1694 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1695 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1696 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1697 else 1698 alt = id->uid_alt_index; 1699 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1700 if (idesc == NULL) { 1701 free(cdesc, M_TEMP); 1702 return (EINVAL); 1703 } 1704 id->uid_desc = *idesc; 1705 free(cdesc, M_TEMP); 1706 break; 1707 case USB_GET_ENDPOINT_DESC: 1708 ed = (struct usb_endpoint_desc *)addr; 1709 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1710 if (cdesc == NULL) 1711 return (EINVAL); 1712 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1713 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1714 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1715 else 1716 alt = ed->ued_alt_index; 1717 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1718 alt, ed->ued_endpoint_index); 1719 if (edesc == NULL) { 1720 free(cdesc, M_TEMP); 1721 return (EINVAL); 1722 } 1723 ed->ued_desc = *edesc; 1724 free(cdesc, M_TEMP); 1725 break; 1726 case USB_GET_FULL_DESC: 1727 { 1728 int len; 1729 struct iovec iov; 1730 struct uio uio; 1731 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1732 int error; 1733 1734 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1735 if (len > fd->ufd_size) 1736 len = fd->ufd_size; 1737 iov.iov_base = (void *)fd->ufd_data; 1738 iov.iov_len = len; 1739 uio.uio_iov = &iov; 1740 uio.uio_iovcnt = 1; 1741 uio.uio_resid = len; 1742 uio.uio_offset = 0; 1743 uio.uio_rw = UIO_READ; 1744 uio.uio_vmspace = l->l_proc->p_vmspace; 1745 error = uiomove((void *)cdesc, len, &uio); 1746 free(cdesc, M_TEMP); 1747 return (error); 1748 } 1749 case USB_GET_STRING_DESC: { 1750 int len; 1751 si = (struct usb_string_desc *)addr; 1752 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1753 si->usd_language_id, &si->usd_desc, &len); 1754 if (err) 1755 return (EINVAL); 1756 break; 1757 } 1758 case USB_DO_REQUEST: 1759 { 1760 struct usb_ctl_request *ur = (void *)addr; 1761 int len = UGETW(ur->ucr_request.wLength); 1762 struct iovec iov; 1763 struct uio uio; 1764 void *ptr = 0; 1765 usbd_status xerr; 1766 int error = 0; 1767 1768 if (!(flag & FWRITE)) 1769 return (EPERM); 1770 /* Avoid requests that would damage the bus integrity. */ 1771 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1772 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1773 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1774 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1775 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1776 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1777 return (EINVAL); 1778 1779 if (len < 0 || len > 32767) 1780 return (EINVAL); 1781 if (len != 0) { 1782 iov.iov_base = (void *)ur->ucr_data; 1783 iov.iov_len = len; 1784 uio.uio_iov = &iov; 1785 uio.uio_iovcnt = 1; 1786 uio.uio_resid = len; 1787 uio.uio_offset = 0; 1788 uio.uio_rw = 1789 ur->ucr_request.bmRequestType & UT_READ ? 1790 UIO_READ : UIO_WRITE; 1791 uio.uio_vmspace = l->l_proc->p_vmspace; 1792 ptr = malloc(len, M_TEMP, M_WAITOK); 1793 if (uio.uio_rw == UIO_WRITE) { 1794 error = uiomove(ptr, len, &uio); 1795 if (error) 1796 goto ret; 1797 } 1798 } 1799 sce = &sc->sc_endpoints[endpt][IN]; 1800 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1801 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1802 if (xerr) { 1803 error = EIO; 1804 goto ret; 1805 } 1806 if (len != 0) { 1807 if (uio.uio_rw == UIO_READ) { 1808 error = uiomove(ptr, len, &uio); 1809 if (error) 1810 goto ret; 1811 } 1812 } 1813 ret: 1814 if (ptr) 1815 free(ptr, M_TEMP); 1816 return (error); 1817 } 1818 case USB_GET_DEVICEINFO: 1819 usbd_fill_deviceinfo(sc->sc_udev, 1820 (struct usb_device_info *)addr, 0); 1821 break; 1822 #ifdef COMPAT_30 1823 case USB_GET_DEVICEINFO_OLD: 1824 usbd_fill_deviceinfo_old(sc->sc_udev, 1825 (struct usb_device_info_old *)addr, 0); 1826 1827 break; 1828 #endif 1829 default: 1830 return (EINVAL); 1831 } 1832 return (0); 1833 } 1834 1835 int 1836 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1837 { 1838 int endpt = UGENENDPOINT(dev); 1839 struct ugen_softc *sc; 1840 int error; 1841 1842 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1843 1844 sc->sc_refcnt++; 1845 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1846 if (--sc->sc_refcnt < 0) 1847 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1848 return (error); 1849 } 1850 1851 int 1852 ugenpoll(dev_t dev, int events, struct lwp *l) 1853 { 1854 struct ugen_softc *sc; 1855 struct ugen_endpoint *sce_in, *sce_out; 1856 int revents = 0; 1857 int s; 1858 1859 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1860 1861 if (sc->sc_dying) 1862 return (POLLHUP); 1863 1864 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1865 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1866 if (sce_in == NULL && sce_out == NULL) 1867 return (POLLERR); 1868 #ifdef DIAGNOSTIC 1869 if (!sce_in->edesc && !sce_out->edesc) { 1870 printf("ugenpoll: no edesc\n"); 1871 return (POLLERR); 1872 } 1873 /* It's possible to have only one pipe open. */ 1874 if (!sce_in->pipeh && !sce_out->pipeh) { 1875 printf("ugenpoll: no pipe\n"); 1876 return (POLLERR); 1877 } 1878 #endif 1879 s = splusb(); 1880 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1881 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1882 case UE_INTERRUPT: 1883 if (sce_in->q.c_cc > 0) 1884 revents |= events & (POLLIN | POLLRDNORM); 1885 else 1886 selrecord(l, &sce_in->rsel); 1887 break; 1888 case UE_ISOCHRONOUS: 1889 if (sce_in->cur != sce_in->fill) 1890 revents |= events & (POLLIN | POLLRDNORM); 1891 else 1892 selrecord(l, &sce_in->rsel); 1893 break; 1894 case UE_BULK: 1895 #ifdef UGEN_BULK_RA_WB 1896 if (sce_in->state & UGEN_BULK_RA) { 1897 if (sce_in->ra_wb_used > 0) 1898 revents |= events & 1899 (POLLIN | POLLRDNORM); 1900 else 1901 selrecord(l, &sce_in->rsel); 1902 break; 1903 } 1904 #endif 1905 /* 1906 * We have no easy way of determining if a read will 1907 * yield any data or a write will happen. 1908 * Pretend they will. 1909 */ 1910 revents |= events & (POLLIN | POLLRDNORM); 1911 break; 1912 default: 1913 break; 1914 } 1915 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1916 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1917 case UE_INTERRUPT: 1918 case UE_ISOCHRONOUS: 1919 /* XXX unimplemented */ 1920 break; 1921 case UE_BULK: 1922 #ifdef UGEN_BULK_RA_WB 1923 if (sce_out->state & UGEN_BULK_WB) { 1924 if (sce_out->ra_wb_used < 1925 sce_out->limit - sce_out->ibuf) 1926 revents |= events & 1927 (POLLOUT | POLLWRNORM); 1928 else 1929 selrecord(l, &sce_out->rsel); 1930 break; 1931 } 1932 #endif 1933 /* 1934 * We have no easy way of determining if a read will 1935 * yield any data or a write will happen. 1936 * Pretend they will. 1937 */ 1938 revents |= events & (POLLOUT | POLLWRNORM); 1939 break; 1940 default: 1941 break; 1942 } 1943 1944 1945 splx(s); 1946 return (revents); 1947 } 1948 1949 static void 1950 filt_ugenrdetach(struct knote *kn) 1951 { 1952 struct ugen_endpoint *sce = kn->kn_hook; 1953 int s; 1954 1955 s = splusb(); 1956 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1957 splx(s); 1958 } 1959 1960 static int 1961 filt_ugenread_intr(struct knote *kn, long hint) 1962 { 1963 struct ugen_endpoint *sce = kn->kn_hook; 1964 1965 kn->kn_data = sce->q.c_cc; 1966 return (kn->kn_data > 0); 1967 } 1968 1969 static int 1970 filt_ugenread_isoc(struct knote *kn, long hint) 1971 { 1972 struct ugen_endpoint *sce = kn->kn_hook; 1973 1974 if (sce->cur == sce->fill) 1975 return (0); 1976 1977 if (sce->cur < sce->fill) 1978 kn->kn_data = sce->fill - sce->cur; 1979 else 1980 kn->kn_data = (sce->limit - sce->cur) + 1981 (sce->fill - sce->ibuf); 1982 1983 return (1); 1984 } 1985 1986 #ifdef UGEN_BULK_RA_WB 1987 static int 1988 filt_ugenread_bulk(struct knote *kn, long hint) 1989 { 1990 struct ugen_endpoint *sce = kn->kn_hook; 1991 1992 if (!(sce->state & UGEN_BULK_RA)) 1993 /* 1994 * We have no easy way of determining if a read will 1995 * yield any data or a write will happen. 1996 * So, emulate "seltrue". 1997 */ 1998 return (filt_seltrue(kn, hint)); 1999 2000 if (sce->ra_wb_used == 0) 2001 return (0); 2002 2003 kn->kn_data = sce->ra_wb_used; 2004 2005 return (1); 2006 } 2007 2008 static int 2009 filt_ugenwrite_bulk(struct knote *kn, long hint) 2010 { 2011 struct ugen_endpoint *sce = kn->kn_hook; 2012 2013 if (!(sce->state & UGEN_BULK_WB)) 2014 /* 2015 * We have no easy way of determining if a read will 2016 * yield any data or a write will happen. 2017 * So, emulate "seltrue". 2018 */ 2019 return (filt_seltrue(kn, hint)); 2020 2021 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2022 return (0); 2023 2024 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2025 2026 return (1); 2027 } 2028 #endif 2029 2030 static const struct filterops ugenread_intr_filtops = 2031 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2032 2033 static const struct filterops ugenread_isoc_filtops = 2034 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2035 2036 #ifdef UGEN_BULK_RA_WB 2037 static const struct filterops ugenread_bulk_filtops = 2038 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2039 2040 static const struct filterops ugenwrite_bulk_filtops = 2041 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2042 #else 2043 static const struct filterops ugen_seltrue_filtops = 2044 { 1, NULL, filt_ugenrdetach, filt_seltrue }; 2045 #endif 2046 2047 int 2048 ugenkqfilter(dev_t dev, struct knote *kn) 2049 { 2050 struct ugen_softc *sc; 2051 struct ugen_endpoint *sce; 2052 struct klist *klist; 2053 int s; 2054 2055 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2056 2057 if (sc->sc_dying) 2058 return (ENXIO); 2059 2060 switch (kn->kn_filter) { 2061 case EVFILT_READ: 2062 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2063 if (sce == NULL) 2064 return (EINVAL); 2065 2066 klist = &sce->rsel.sel_klist; 2067 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2068 case UE_INTERRUPT: 2069 kn->kn_fop = &ugenread_intr_filtops; 2070 break; 2071 case UE_ISOCHRONOUS: 2072 kn->kn_fop = &ugenread_isoc_filtops; 2073 break; 2074 case UE_BULK: 2075 #ifdef UGEN_BULK_RA_WB 2076 kn->kn_fop = &ugenread_bulk_filtops; 2077 break; 2078 #else 2079 /* 2080 * We have no easy way of determining if a read will 2081 * yield any data or a write will happen. 2082 * So, emulate "seltrue". 2083 */ 2084 kn->kn_fop = &ugen_seltrue_filtops; 2085 #endif 2086 break; 2087 default: 2088 return (EINVAL); 2089 } 2090 break; 2091 2092 case EVFILT_WRITE: 2093 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2094 if (sce == NULL) 2095 return (EINVAL); 2096 2097 klist = &sce->rsel.sel_klist; 2098 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2099 case UE_INTERRUPT: 2100 case UE_ISOCHRONOUS: 2101 /* XXX poll doesn't support this */ 2102 return (EINVAL); 2103 2104 case UE_BULK: 2105 #ifdef UGEN_BULK_RA_WB 2106 kn->kn_fop = &ugenwrite_bulk_filtops; 2107 #else 2108 /* 2109 * We have no easy way of determining if a read will 2110 * yield any data or a write will happen. 2111 * So, emulate "seltrue". 2112 */ 2113 kn->kn_fop = &ugen_seltrue_filtops; 2114 #endif 2115 break; 2116 default: 2117 return (EINVAL); 2118 } 2119 break; 2120 2121 default: 2122 return (EINVAL); 2123 } 2124 2125 kn->kn_hook = sce; 2126 2127 s = splusb(); 2128 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2129 splx(s); 2130 2131 return (0); 2132 } 2133 2134 #if defined(__FreeBSD__) 2135 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2136 #endif 2137
Indexes created Thu Sep 25 16:09:42 GMT 2025