ugen.c revision 1.91.4.3
1 /* $NetBSD: ugen.c,v 1.91.4.3 2007/06/17 01:10:14 itohy 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 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the NetBSD 27 * Foundation, Inc. and its contributors. 28 * 4. Neither the name of The NetBSD Foundation nor the names of its 29 * contributors may be used to endorse or promote products derived 30 * from this software without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 33 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 34 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 35 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 36 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 37 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 38 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 39 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 40 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGE. 43 */ 44 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.91.4.3 2007/06/17 01:10:14 itohy Exp $"); 48 49 #include "opt_ugen_bulk_ra_wb.h" 50 #include "opt_compat_netbsd.h" 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/kernel.h> 55 #include <sys/malloc.h> 56 #if defined(__NetBSD__) || defined(__OpenBSD__) 57 #include <sys/device.h> 58 #include <sys/ioctl.h> 59 #elif defined(__FreeBSD__) 60 #include <sys/module.h> 61 #include <sys/bus.h> 62 #include <sys/ioccom.h> 63 #include <sys/conf.h> 64 #include <sys/fcntl.h> 65 #include <sys/filio.h> 66 #endif 67 #include <sys/conf.h> 68 #include <sys/tty.h> 69 #include <sys/file.h> 70 #include <sys/select.h> 71 #include <sys/proc.h> 72 #include <sys/vnode.h> 73 #include <sys/poll.h> 74 75 #include <dev/usb/usb.h> 76 #include <dev/usb/usbdi.h> 77 #include <dev/usb/usbdi_util.h> 78 79 #ifdef UGEN_DEBUG 80 #define DPRINTF(x) if (ugendebug) logprintf x 81 #define DPRINTFN(n,x) if (ugendebug>(n)) logprintf x 82 int ugendebug = 0; 83 #else 84 #define DPRINTF(x) 85 #define DPRINTFN(n,x) 86 #endif 87 88 #define UGEN_CHUNK 128 /* chunk size for read */ 89 #define UGEN_IBSIZE 1020 /* buffer size */ 90 #define UGEN_BBSIZE 1024 91 92 #define UGEN_NISOFRAMES 500 /* 0.5 seconds worth */ 93 #define UGEN_NISOREQS 6 /* number of outstanding xfer requests */ 94 #define UGEN_NISORFRMS 4 /* number of frames (miliseconds) per req */ 95 96 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 97 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 98 99 struct ugen_endpoint { 100 struct ugen_softc *sc; 101 usb_endpoint_descriptor_t *edesc; 102 usbd_interface_handle iface; 103 int state; 104 #define UGEN_ASLP 0x02 /* waiting for data */ 105 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 106 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 107 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 108 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 109 usbd_pipe_handle pipeh; 110 struct clist q; 111 struct selinfo rsel; 112 u_char *ibuf; /* start of buffer (circular for isoc) */ 113 u_char *fill; /* location for input (isoc) */ 114 u_char *limit; /* end of circular buffer (isoc) */ 115 u_char *cur; /* current read location (isoc) */ 116 u_int32_t timeout; 117 #ifdef UGEN_BULK_RA_WB 118 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 119 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 120 u_int32_t ra_wb_used; /* how much is in buffer */ 121 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 122 usbd_xfer_handle ra_wb_xfer; 123 #endif 124 struct isoreq { 125 struct ugen_endpoint *sce; 126 usbd_xfer_handle xfer; 127 void *dmabuf; 128 u_int16_t sizes[UGEN_NISORFRMS]; 129 } isoreqs[UGEN_NISOREQS]; 130 }; 131 132 struct ugen_softc { 133 USBBASEDEVICE sc_dev; /* base device */ 134 usbd_device_handle sc_udev; 135 136 char sc_is_open[USB_MAX_ENDPOINTS]; 137 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 138 #define OUT 0 139 #define IN 1 140 141 int sc_refcnt; 142 char sc_buffer[UGEN_BBSIZE]; 143 u_char sc_dying; 144 }; 145 146 #if defined(__NetBSD__) 147 dev_type_open(ugenopen); 148 dev_type_close(ugenclose); 149 dev_type_read(ugenread); 150 dev_type_write(ugenwrite); 151 dev_type_ioctl(ugenioctl); 152 dev_type_poll(ugenpoll); 153 dev_type_kqfilter(ugenkqfilter); 154 155 const struct cdevsw ugen_cdevsw = { 156 ugenopen, ugenclose, ugenread, ugenwrite, ugenioctl, 157 nostop, notty, ugenpoll, nommap, ugenkqfilter, D_OTHER, 158 }; 159 #elif defined(__OpenBSD__) 160 cdev_decl(ugen); 161 #elif defined(__FreeBSD__) 162 d_open_t ugenopen; 163 d_close_t ugenclose; 164 d_read_t ugenread; 165 d_write_t ugenwrite; 166 d_ioctl_t ugenioctl; 167 d_poll_t ugenpoll; 168 169 #define UGEN_CDEV_MAJOR 114 170 171 Static struct cdevsw ugen_cdevsw = { 172 /* open */ ugenopen, 173 /* close */ ugenclose, 174 /* read */ ugenread, 175 /* write */ ugenwrite, 176 /* ioctl */ ugenioctl, 177 /* poll */ ugenpoll, 178 /* mmap */ nommap, 179 /* strategy */ nostrategy, 180 /* name */ "ugen", 181 /* maj */ UGEN_CDEV_MAJOR, 182 /* dump */ nodump, 183 /* psize */ nopsize, 184 /* flags */ 0, 185 /* bmaj */ -1 186 }; 187 #endif 188 189 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 190 usbd_status status); 191 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 192 usbd_status status); 193 #ifdef UGEN_BULK_RA_WB 194 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 195 usbd_status status); 196 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 197 usbd_status status); 198 #endif 199 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 200 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 201 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 202 usb_ioctlarg_t, int, usb_proc_ptr); 203 Static int ugen_set_config(struct ugen_softc *sc, int configno); 204 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 205 int index, int *lenp); 206 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 207 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 208 209 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 210 #define UGENENDPOINT(n) (minor(n) & 0xf) 211 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 212 213 USB_DECLARE_DRIVER(ugen); 214 215 USB_MATCH(ugen) 216 { 217 USB_MATCH_START(ugen, uaa); 218 219 if (match->cf_flags & 1) 220 return (UMATCH_HIGHEST); 221 else if (uaa->usegeneric) 222 return (UMATCH_GENERIC); 223 else 224 return (UMATCH_NONE); 225 } 226 227 USB_ATTACH(ugen) 228 { 229 USB_ATTACH_START(ugen, sc, uaa); 230 usbd_device_handle udev; 231 char *devinfop; 232 usbd_status err; 233 int conf; 234 235 devinfop = usbd_devinfo_alloc(uaa->device, 0); 236 USB_ATTACH_SETUP; 237 printf("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 238 usbd_devinfo_free(devinfop); 239 240 sc->sc_udev = udev = uaa->device; 241 242 /* First set configuration index 0, the default one for ugen. */ 243 err = usbd_set_config_index(udev, 0, 0); 244 if (err) { 245 printf("%s: setting configuration index 0 failed\n", 246 USBDEVNAME(sc->sc_dev)); 247 sc->sc_dying = 1; 248 USB_ATTACH_ERROR_RETURN; 249 } 250 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 251 252 /* Set up all the local state for this configuration. */ 253 err = ugen_set_config(sc, conf); 254 if (err) { 255 printf("%s: setting configuration %d failed\n", 256 USBDEVNAME(sc->sc_dev), conf); 257 sc->sc_dying = 1; 258 USB_ATTACH_ERROR_RETURN; 259 } 260 261 #ifdef __FreeBSD__ 262 { 263 static int global_init_done = 0; 264 if (!global_init_done) { 265 cdevsw_add(&ugen_cdevsw); 266 global_init_done = 1; 267 } 268 } 269 #endif 270 271 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 272 USBDEV(sc->sc_dev)); 273 274 USB_ATTACH_SUCCESS_RETURN; 275 } 276 277 Static int 278 ugen_set_config(struct ugen_softc *sc, int configno) 279 { 280 usbd_device_handle dev = sc->sc_udev; 281 usbd_interface_handle iface; 282 usb_endpoint_descriptor_t *ed; 283 struct ugen_endpoint *sce; 284 u_int8_t niface, nendpt; 285 int ifaceno, endptno, endpt; 286 usbd_status err; 287 int dir; 288 289 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 290 USBDEVNAME(sc->sc_dev), configno, sc)); 291 292 /* 293 * We start at 1, not 0, because we don't care whether the 294 * control endpoint is open or not. It is always present. 295 */ 296 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 297 if (sc->sc_is_open[endptno]) { 298 DPRINTFN(1, 299 ("ugen_set_config: %s - endpoint %d is open\n", 300 USBDEVNAME(sc->sc_dev), endptno)); 301 return (USBD_IN_USE); 302 } 303 304 /* Avoid setting the current value. */ 305 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 306 err = usbd_set_config_no(dev, configno, 1); 307 if (err) 308 return (err); 309 } 310 311 err = usbd_interface_count(dev, &niface); 312 if (err) 313 return (err); 314 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 315 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 316 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 317 err = usbd_device2interface_handle(dev, ifaceno, &iface); 318 if (err) 319 return (err); 320 err = usbd_endpoint_count(iface, &nendpt); 321 if (err) 322 return (err); 323 for (endptno = 0; endptno < nendpt; endptno++) { 324 ed = usbd_interface2endpoint_descriptor(iface,endptno); 325 KASSERT(ed != NULL); 326 endpt = ed->bEndpointAddress; 327 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 328 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 329 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 330 "(%d,%d), sce=%p\n", 331 endptno, endpt, UE_GET_ADDR(endpt), 332 UE_GET_DIR(endpt), sce)); 333 sce->sc = sc; 334 sce->edesc = ed; 335 sce->iface = iface; 336 } 337 } 338 return (USBD_NORMAL_COMPLETION); 339 } 340 341 int 342 ugenopen(dev_t dev, int flag, int mode, usb_proc_ptr p) 343 { 344 struct ugen_softc *sc; 345 int unit = UGENUNIT(dev); 346 int endpt = UGENENDPOINT(dev); 347 usb_endpoint_descriptor_t *edesc; 348 struct ugen_endpoint *sce; 349 int dir, isize; 350 usbd_status err; 351 usbd_xfer_handle xfer; 352 void *tbuf; 353 int i, j; 354 355 USB_GET_SC_OPEN(ugen, unit, sc); 356 357 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 358 flag, mode, unit, endpt)); 359 360 if (sc == NULL || sc->sc_dying) 361 return (ENXIO); 362 363 /* The control endpoint allows multiple opens. */ 364 if (endpt == USB_CONTROL_ENDPOINT) { 365 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 366 return (0); 367 } 368 369 if (sc->sc_is_open[endpt]) 370 return (EBUSY); 371 372 /* Make sure there are pipes for all directions. */ 373 for (dir = OUT; dir <= IN; dir++) { 374 if (flag & (dir == OUT ? FWRITE : FREAD)) { 375 sce = &sc->sc_endpoints[endpt][dir]; 376 if (sce == 0 || sce->edesc == 0) 377 return (ENXIO); 378 } 379 } 380 381 /* Actually open the pipes. */ 382 /* XXX Should back out properly if it fails. */ 383 for (dir = OUT; dir <= IN; dir++) { 384 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 385 continue; 386 sce = &sc->sc_endpoints[endpt][dir]; 387 sce->state = 0; 388 sce->timeout = USBD_NO_TIMEOUT; 389 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 390 sc, endpt, dir, sce)); 391 edesc = sce->edesc; 392 switch (edesc->bmAttributes & UE_XFERTYPE) { 393 case UE_INTERRUPT: 394 if (dir == OUT) { 395 err = usbd_open_pipe(sce->iface, 396 edesc->bEndpointAddress, 0, &sce->pipeh); 397 if (err) 398 return (EIO); 399 break; 400 } 401 isize = UGETW(edesc->wMaxPacketSize); 402 if (isize == 0) /* shouldn't happen */ 403 return (EINVAL); 404 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 405 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 406 endpt, isize)); 407 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 408 return (ENOMEM); 409 err = usbd_open_pipe_intr(sce->iface, 410 edesc->bEndpointAddress, 411 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 412 sce->ibuf, isize, ugenintr, 413 USBD_DEFAULT_INTERVAL); 414 if (err) { 415 free(sce->ibuf, M_USBDEV); 416 clfree(&sce->q); 417 return (EIO); 418 } 419 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 420 break; 421 case UE_BULK: 422 err = usbd_open_pipe(sce->iface, 423 edesc->bEndpointAddress, 0, &sce->pipeh); 424 if (err) 425 return (EIO); 426 #ifdef UGEN_BULK_RA_WB 427 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 428 /* 429 * Use request size for non-RA/WB transfers 430 * as the default. 431 */ 432 sce->ra_wb_reqsize = UGEN_BBSIZE; 433 #endif 434 break; 435 case UE_ISOCHRONOUS: 436 if (dir == OUT) 437 return (EINVAL); 438 isize = UGETW(edesc->wMaxPacketSize); 439 if (isize == 0) /* shouldn't happen */ 440 return (EINVAL); 441 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 442 M_USBDEV, M_WAITOK); 443 sce->cur = sce->fill = sce->ibuf; 444 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 445 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 446 endpt, isize)); 447 err = usbd_open_pipe(sce->iface, 448 edesc->bEndpointAddress, 0, &sce->pipeh); 449 if (err) { 450 free(sce->ibuf, M_USBDEV); 451 return (EIO); 452 } 453 for(i = 0; i < UGEN_NISOREQS; ++i) { 454 sce->isoreqs[i].sce = sce; 455 xfer = usbd_alloc_xfer(sc->sc_udev, sce->pipeh); 456 if (xfer == 0) 457 goto bad; 458 sce->isoreqs[i].xfer = xfer; 459 tbuf = usbd_alloc_buffer 460 (xfer, isize * UGEN_NISORFRMS); 461 if (tbuf == 0) { 462 i++; 463 goto bad; 464 } 465 sce->isoreqs[i].dmabuf = tbuf; 466 for(j = 0; j < UGEN_NISORFRMS; ++j) 467 sce->isoreqs[i].sizes[j] = isize; 468 usbd_setup_isoc_xfer 469 (xfer, sce->pipeh, &sce->isoreqs[i], 470 sce->isoreqs[i].sizes, 471 UGEN_NISORFRMS, USBD_NO_COPY, 472 ugen_isoc_rintr); 473 (void)usbd_transfer(xfer); 474 } 475 DPRINTFN(5, ("ugenopen: isoc open done\n")); 476 break; 477 bad: 478 while (--i >= 0) /* implicit buffer free */ 479 usbd_free_xfer(sce->isoreqs[i].xfer); 480 return (ENOMEM); 481 case UE_CONTROL: 482 sce->timeout = USBD_DEFAULT_TIMEOUT; 483 return (EINVAL); 484 } 485 } 486 sc->sc_is_open[endpt] = 1; 487 return (0); 488 } 489 490 int 491 ugenclose(dev_t dev, int flag, int mode, usb_proc_ptr p) 492 { 493 int endpt = UGENENDPOINT(dev); 494 struct ugen_softc *sc; 495 struct ugen_endpoint *sce; 496 int dir; 497 int i; 498 499 USB_GET_SC(ugen, UGENUNIT(dev), sc); 500 501 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 502 flag, mode, UGENUNIT(dev), endpt)); 503 504 #ifdef DIAGNOSTIC 505 if (!sc->sc_is_open[endpt]) { 506 printf("ugenclose: not open\n"); 507 return (EINVAL); 508 } 509 #endif 510 511 if (endpt == USB_CONTROL_ENDPOINT) { 512 DPRINTFN(5, ("ugenclose: close control\n")); 513 sc->sc_is_open[endpt] = 0; 514 return (0); 515 } 516 517 for (dir = OUT; dir <= IN; dir++) { 518 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 519 continue; 520 sce = &sc->sc_endpoints[endpt][dir]; 521 if (sce == NULL || sce->pipeh == NULL) 522 continue; 523 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 524 endpt, dir, sce)); 525 526 usbd_abort_pipe(sce->pipeh); 527 528 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 529 case UE_INTERRUPT: 530 ndflush(&sce->q, sce->q.c_cc); 531 clfree(&sce->q); 532 break; 533 case UE_ISOCHRONOUS: 534 for (i = 0; i < UGEN_NISOREQS; ++i) 535 usbd_free_xfer(sce->isoreqs[i].xfer); 536 break; 537 #ifdef UGEN_BULK_RA_WB 538 case UE_BULK: 539 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 540 /* ibuf freed below */ 541 usbd_free_xfer(sce->ra_wb_xfer); 542 break; 543 #endif 544 default: 545 break; 546 } 547 548 usbd_close_pipe(sce->pipeh); 549 sce->pipeh = NULL; 550 551 if (sce->ibuf != NULL) { 552 free(sce->ibuf, M_USBDEV); 553 sce->ibuf = NULL; 554 clfree(&sce->q); 555 } 556 } 557 sc->sc_is_open[endpt] = 0; 558 559 return (0); 560 } 561 562 Static int 563 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 564 { 565 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 566 u_int32_t n, tn; 567 usbd_xfer_handle xfer; 568 usbd_status err; 569 int s; 570 int error = 0; 571 572 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 573 574 if (sc->sc_dying) 575 return (EIO); 576 577 if (endpt == USB_CONTROL_ENDPOINT) 578 return (ENODEV); 579 580 #ifdef DIAGNOSTIC 581 if (sce->edesc == NULL) { 582 printf("ugenread: no edesc\n"); 583 return (EIO); 584 } 585 if (sce->pipeh == NULL) { 586 printf("ugenread: no pipe\n"); 587 return (EIO); 588 } 589 #endif 590 591 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 592 case UE_INTERRUPT: 593 /* Block until activity occurred. */ 594 s = splusb(); 595 while (sce->q.c_cc == 0) { 596 if (flag & IO_NDELAY) { 597 splx(s); 598 return (EWOULDBLOCK); 599 } 600 sce->state |= UGEN_ASLP; 601 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 602 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 603 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 604 if (sc->sc_dying) 605 error = EIO; 606 if (error) { 607 sce->state &= ~UGEN_ASLP; 608 break; 609 } 610 } 611 splx(s); 612 613 /* Transfer as many chunks as possible. */ 614 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 615 n = min(sce->q.c_cc, uio->uio_resid); 616 if (n > sizeof(sc->sc_buffer)) 617 n = sizeof(sc->sc_buffer); 618 619 /* Remove a small chunk from the input queue. */ 620 q_to_b(&sce->q, sc->sc_buffer, n); 621 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 622 623 /* Copy the data to the user process. */ 624 error = uiomove(sc->sc_buffer, n, uio); 625 if (error) 626 break; 627 } 628 break; 629 case UE_BULK: 630 #ifdef UGEN_BULK_RA_WB 631 if (sce->state & UGEN_BULK_RA) { 632 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 633 uio->uio_resid, sce->ra_wb_used)); 634 xfer = sce->ra_wb_xfer; 635 636 s = splusb(); 637 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 638 splx(s); 639 return (EWOULDBLOCK); 640 } 641 while (uio->uio_resid > 0 && !error) { 642 while (sce->ra_wb_used == 0) { 643 sce->state |= UGEN_ASLP; 644 DPRINTFN(5, 645 ("ugenread: sleep on %p\n", 646 sce)); 647 error = tsleep(sce, PZERO | PCATCH, 648 "ugenrb", 0); 649 DPRINTFN(5, 650 ("ugenread: woke, error=%d\n", 651 error)); 652 if (sc->sc_dying) 653 error = EIO; 654 if (error) { 655 sce->state &= ~UGEN_ASLP; 656 break; 657 } 658 } 659 660 /* Copy data to the process. */ 661 while (uio->uio_resid > 0 662 && sce->ra_wb_used > 0) { 663 n = min(uio->uio_resid, 664 sce->ra_wb_used); 665 n = min(n, sce->limit - sce->cur); 666 error = uiomove(sce->cur, n, uio); 667 if (error) 668 break; 669 sce->cur += n; 670 sce->ra_wb_used -= n; 671 if (sce->cur == sce->limit) 672 sce->cur = sce->ibuf; 673 } 674 675 /* 676 * If the transfers stopped because the 677 * buffer was full, restart them. 678 */ 679 if (sce->state & UGEN_RA_WB_STOP && 680 sce->ra_wb_used < sce->limit - sce->ibuf) { 681 n = (sce->limit - sce->ibuf) 682 - sce->ra_wb_used; 683 usbd_setup_xfer(xfer, 684 sce->pipeh, sce, NULL, 685 min(n, sce->ra_wb_xferlen), 686 USBD_NO_COPY, USBD_NO_TIMEOUT, 687 ugen_bulkra_intr); 688 sce->state &= ~UGEN_RA_WB_STOP; 689 err = usbd_transfer(xfer); 690 if (err != USBD_IN_PROGRESS) 691 /* 692 * The transfer has not been 693 * queued. Setting STOP 694 * will make us try 695 * again at the next read. 696 */ 697 sce->state |= UGEN_RA_WB_STOP; 698 } 699 } 700 splx(s); 701 break; 702 } 703 #endif 704 xfer = usbd_alloc_xfer(sc->sc_udev, sce->pipeh); 705 if (xfer == 0) 706 return (ENOMEM); 707 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 708 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 709 tn = n; 710 err = usbd_bulk_transfer( 711 xfer, sce->pipeh, 712 sce->state & UGEN_SHORT_OK ? 713 USBD_SHORT_XFER_OK : 0, 714 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 715 if (err) { 716 if (err == USBD_INTERRUPTED) 717 error = EINTR; 718 else if (err == USBD_TIMEOUT) 719 error = ETIMEDOUT; 720 else 721 error = EIO; 722 break; 723 } 724 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 725 error = uiomove(sc->sc_buffer, tn, uio); 726 if (error || tn < n) 727 break; 728 } 729 usbd_free_xfer(xfer); 730 break; 731 case UE_ISOCHRONOUS: 732 s = splusb(); 733 while (sce->cur == sce->fill) { 734 if (flag & IO_NDELAY) { 735 splx(s); 736 return (EWOULDBLOCK); 737 } 738 sce->state |= UGEN_ASLP; 739 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 740 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 741 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 742 if (sc->sc_dying) 743 error = EIO; 744 if (error) { 745 sce->state &= ~UGEN_ASLP; 746 break; 747 } 748 } 749 750 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 751 if(sce->fill > sce->cur) 752 n = min(sce->fill - sce->cur, uio->uio_resid); 753 else 754 n = min(sce->limit - sce->cur, uio->uio_resid); 755 756 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 757 758 /* Copy the data to the user process. */ 759 error = uiomove(sce->cur, n, uio); 760 if (error) 761 break; 762 sce->cur += n; 763 if(sce->cur >= sce->limit) 764 sce->cur = sce->ibuf; 765 } 766 splx(s); 767 break; 768 769 770 default: 771 return (ENXIO); 772 } 773 return (error); 774 } 775 776 int 777 ugenread(dev_t dev, struct uio *uio, int flag) 778 { 779 int endpt = UGENENDPOINT(dev); 780 struct ugen_softc *sc; 781 int error; 782 783 USB_GET_SC(ugen, UGENUNIT(dev), sc); 784 785 sc->sc_refcnt++; 786 error = ugen_do_read(sc, endpt, uio, flag); 787 if (--sc->sc_refcnt < 0) 788 usb_detach_wakeup(USBDEV(sc->sc_dev)); 789 return (error); 790 } 791 792 Static int 793 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 794 int flag) 795 { 796 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 797 u_int32_t n; 798 int error = 0; 799 #ifdef UGEN_BULK_RA_WB 800 int s; 801 u_int32_t tn; 802 char *dbuf; 803 #endif 804 usbd_xfer_handle xfer; 805 usbd_status err; 806 807 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 808 809 if (sc->sc_dying) 810 return (EIO); 811 812 if (endpt == USB_CONTROL_ENDPOINT) 813 return (ENODEV); 814 815 #ifdef DIAGNOSTIC 816 if (sce->edesc == NULL) { 817 printf("ugenwrite: no edesc\n"); 818 return (EIO); 819 } 820 if (sce->pipeh == NULL) { 821 printf("ugenwrite: no pipe\n"); 822 return (EIO); 823 } 824 #endif 825 826 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 827 case UE_BULK: 828 #ifdef UGEN_BULK_RA_WB 829 if (sce->state & UGEN_BULK_WB) { 830 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 831 uio->uio_resid, sce->ra_wb_used)); 832 xfer = sce->ra_wb_xfer; 833 834 s = splusb(); 835 if (sce->ra_wb_used == sce->limit - sce->ibuf && 836 flag & IO_NDELAY) { 837 splx(s); 838 return (EWOULDBLOCK); 839 } 840 while (uio->uio_resid > 0 && !error) { 841 while (sce->ra_wb_used == 842 sce->limit - sce->ibuf) { 843 sce->state |= UGEN_ASLP; 844 DPRINTFN(5, 845 ("ugenwrite: sleep on %p\n", 846 sce)); 847 error = tsleep(sce, PZERO | PCATCH, 848 "ugenwb", 0); 849 DPRINTFN(5, 850 ("ugenwrite: woke, error=%d\n", 851 error)); 852 if (sc->sc_dying) 853 error = EIO; 854 if (error) { 855 sce->state &= ~UGEN_ASLP; 856 break; 857 } 858 } 859 860 /* Copy data from the process. */ 861 while (uio->uio_resid > 0 && 862 sce->ra_wb_used < sce->limit - sce->ibuf) { 863 n = min(uio->uio_resid, 864 (sce->limit - sce->ibuf) 865 - sce->ra_wb_used); 866 n = min(n, sce->limit - sce->fill); 867 error = uiomove(sce->fill, n, uio); 868 if (error) 869 break; 870 sce->fill += n; 871 sce->ra_wb_used += n; 872 if (sce->fill == sce->limit) 873 sce->fill = sce->ibuf; 874 } 875 876 /* 877 * If the transfers stopped because the 878 * buffer was empty, restart them. 879 */ 880 if (sce->state & UGEN_RA_WB_STOP && 881 sce->ra_wb_used > 0) { 882 dbuf = (char *)usbd_get_buffer(xfer); 883 n = min(sce->ra_wb_used, 884 sce->ra_wb_xferlen); 885 tn = min(n, sce->limit - sce->cur); 886 memcpy(dbuf, sce->cur, tn); 887 dbuf += tn; 888 if (n - tn > 0) 889 memcpy(dbuf, sce->ibuf, 890 n - tn); 891 usbd_setup_xfer(xfer, 892 sce->pipeh, sce, NULL, n, 893 USBD_NO_COPY, USBD_NO_TIMEOUT, 894 ugen_bulkwb_intr); 895 sce->state &= ~UGEN_RA_WB_STOP; 896 err = usbd_transfer(xfer); 897 if (err != USBD_IN_PROGRESS) 898 /* 899 * The transfer has not been 900 * queued. Setting STOP 901 * will make us try again 902 * at the next read. 903 */ 904 sce->state |= UGEN_RA_WB_STOP; 905 } 906 } 907 splx(s); 908 break; 909 } 910 #endif 911 xfer = usbd_alloc_xfer(sc->sc_udev, sce->pipeh); 912 if (xfer == 0) 913 return (EIO); 914 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 915 error = uiomove(sc->sc_buffer, n, uio); 916 if (error) 917 break; 918 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 919 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 920 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 921 if (err) { 922 if (err == USBD_INTERRUPTED) 923 error = EINTR; 924 else if (err == USBD_TIMEOUT) 925 error = ETIMEDOUT; 926 else 927 error = EIO; 928 break; 929 } 930 } 931 usbd_free_xfer(xfer); 932 break; 933 case UE_INTERRUPT: 934 xfer = usbd_alloc_xfer(sc->sc_udev, sce->pipeh); 935 if (xfer == 0) 936 return (EIO); 937 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 938 uio->uio_resid)) != 0) { 939 error = uiomove(sc->sc_buffer, n, uio); 940 if (error) 941 break; 942 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 943 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 944 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 945 if (err) { 946 if (err == USBD_INTERRUPTED) 947 error = EINTR; 948 else if (err == USBD_TIMEOUT) 949 error = ETIMEDOUT; 950 else 951 error = EIO; 952 break; 953 } 954 } 955 usbd_free_xfer(xfer); 956 break; 957 default: 958 return (ENXIO); 959 } 960 return (error); 961 } 962 963 int 964 ugenwrite(dev_t dev, struct uio *uio, int flag) 965 { 966 int endpt = UGENENDPOINT(dev); 967 struct ugen_softc *sc; 968 int error; 969 970 USB_GET_SC(ugen, UGENUNIT(dev), sc); 971 972 sc->sc_refcnt++; 973 error = ugen_do_write(sc, endpt, uio, flag); 974 if (--sc->sc_refcnt < 0) 975 usb_detach_wakeup(USBDEV(sc->sc_dev)); 976 return (error); 977 } 978 979 #if defined(__NetBSD__) || defined(__OpenBSD__) 980 int 981 ugen_activate(device_ptr_t self, enum devact act) 982 { 983 struct ugen_softc *sc = (struct ugen_softc *)self; 984 985 switch (act) { 986 case DVACT_ACTIVATE: 987 return (EOPNOTSUPP); 988 989 case DVACT_DEACTIVATE: 990 sc->sc_dying = 1; 991 break; 992 } 993 return (0); 994 } 995 #endif 996 997 USB_DETACH(ugen) 998 { 999 USB_DETACH_START(ugen, sc); 1000 struct ugen_endpoint *sce; 1001 int i, dir; 1002 int s; 1003 #if defined(__NetBSD__) || defined(__OpenBSD__) 1004 int maj, mn; 1005 1006 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1007 #elif defined(__FreeBSD__) 1008 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1009 #endif 1010 1011 sc->sc_dying = 1; 1012 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1013 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1014 for (dir = OUT; dir <= IN; dir++) { 1015 sce = &sc->sc_endpoints[i][dir]; 1016 if (sce && sce->pipeh) 1017 usbd_abort_pipe(sce->pipeh); 1018 } 1019 } 1020 1021 s = splusb(); 1022 if (--sc->sc_refcnt >= 0) { 1023 /* Wake everyone */ 1024 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1025 wakeup(&sc->sc_endpoints[i][IN]); 1026 /* Wait for processes to go away. */ 1027 usb_detach_wait(USBDEV(sc->sc_dev)); 1028 } 1029 splx(s); 1030 1031 #if defined(__NetBSD__) || defined(__OpenBSD__) 1032 /* locate the major number */ 1033 #if defined(__NetBSD__) 1034 maj = cdevsw_lookup_major(&ugen_cdevsw); 1035 #elif defined(__OpenBSD__) 1036 for (maj = 0; maj < nchrdev; maj++) 1037 if (cdevsw[maj].d_open == ugenopen) 1038 break; 1039 #endif 1040 1041 /* Nuke the vnodes for any open instances (calls close). */ 1042 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1043 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1044 #elif defined(__FreeBSD__) 1045 /* XXX not implemented yet */ 1046 #endif 1047 1048 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1049 USBDEV(sc->sc_dev)); 1050 1051 return (0); 1052 } 1053 1054 Static void 1055 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1056 { 1057 struct ugen_endpoint *sce = addr; 1058 /*struct ugen_softc *sc = sce->sc;*/ 1059 u_int32_t count; 1060 u_char *ibuf; 1061 1062 if (status == USBD_CANCELLED) 1063 return; 1064 1065 if (status != USBD_NORMAL_COMPLETION) { 1066 DPRINTF(("ugenintr: status=%d\n", status)); 1067 if (status == USBD_STALLED) 1068 usbd_clear_endpoint_stall_async(sce->pipeh); 1069 return; 1070 } 1071 1072 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1073 ibuf = sce->ibuf; 1074 1075 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1076 xfer, status, count)); 1077 DPRINTFN(5, (" data = %02x %02x %02x\n", 1078 ibuf[0], ibuf[1], ibuf[2])); 1079 1080 (void)b_to_q(ibuf, count, &sce->q); 1081 1082 if (sce->state & UGEN_ASLP) { 1083 sce->state &= ~UGEN_ASLP; 1084 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1085 wakeup(sce); 1086 } 1087 selnotify(&sce->rsel, 0); 1088 } 1089 1090 Static void 1091 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1092 usbd_status status) 1093 { 1094 struct isoreq *req = addr; 1095 struct ugen_endpoint *sce = req->sce; 1096 u_int32_t count, n; 1097 int i, isize; 1098 1099 /* Return if we are aborting. */ 1100 if (status == USBD_CANCELLED) 1101 return; 1102 1103 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1104 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1105 (long)(req - sce->isoreqs), count)); 1106 1107 /* throw away oldest input if the buffer is full */ 1108 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1109 sce->cur += count; 1110 if(sce->cur >= sce->limit) 1111 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1112 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1113 count)); 1114 } 1115 1116 isize = UGETW(sce->edesc->wMaxPacketSize); 1117 for (i = 0; i < UGEN_NISORFRMS; i++) { 1118 u_int32_t actlen = req->sizes[i]; 1119 char const *tbuf = (char const *)req->dmabuf + isize * i; 1120 1121 /* copy data to buffer */ 1122 while (actlen > 0) { 1123 n = min(actlen, sce->limit - sce->fill); 1124 memcpy(sce->fill, tbuf, n); 1125 1126 tbuf += n; 1127 actlen -= n; 1128 sce->fill += n; 1129 if(sce->fill == sce->limit) 1130 sce->fill = sce->ibuf; 1131 } 1132 1133 /* setup size for next transfer */ 1134 req->sizes[i] = isize; 1135 } 1136 1137 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1138 USBD_NO_COPY, ugen_isoc_rintr); 1139 (void)usbd_transfer(xfer); 1140 1141 if (sce->state & UGEN_ASLP) { 1142 sce->state &= ~UGEN_ASLP; 1143 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1144 wakeup(sce); 1145 } 1146 selnotify(&sce->rsel, 0); 1147 } 1148 1149 #ifdef UGEN_BULK_RA_WB 1150 Static void 1151 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1152 usbd_status status) 1153 { 1154 struct ugen_endpoint *sce = addr; 1155 u_int32_t count, n; 1156 char const *tbuf; 1157 usbd_status err; 1158 1159 /* Return if we are aborting. */ 1160 if (status == USBD_CANCELLED) 1161 return; 1162 1163 if (status != USBD_NORMAL_COMPLETION) { 1164 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1165 sce->state |= UGEN_RA_WB_STOP; 1166 if (status == USBD_STALLED) 1167 usbd_clear_endpoint_stall_async(sce->pipeh); 1168 return; 1169 } 1170 1171 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1172 1173 /* Keep track of how much is in the buffer. */ 1174 sce->ra_wb_used += count; 1175 1176 /* Copy data to buffer. */ 1177 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1178 n = min(count, sce->limit - sce->fill); 1179 memcpy(sce->fill, tbuf, n); 1180 tbuf += n; 1181 count -= n; 1182 sce->fill += n; 1183 if (sce->fill == sce->limit) 1184 sce->fill = sce->ibuf; 1185 if (count > 0) { 1186 memcpy(sce->fill, tbuf, count); 1187 sce->fill += count; 1188 } 1189 1190 /* Set up the next request if necessary. */ 1191 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1192 if (n > 0) { 1193 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1194 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1195 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1196 err = usbd_transfer(xfer); 1197 if (err != USBD_IN_PROGRESS) { 1198 printf("usbd_bulkra_intr: error=%d\n", err); 1199 /* 1200 * The transfer has not been queued. Setting STOP 1201 * will make us try again at the next read. 1202 */ 1203 sce->state |= UGEN_RA_WB_STOP; 1204 } 1205 } 1206 else 1207 sce->state |= UGEN_RA_WB_STOP; 1208 1209 if (sce->state & UGEN_ASLP) { 1210 sce->state &= ~UGEN_ASLP; 1211 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1212 wakeup(sce); 1213 } 1214 selnotify(&sce->rsel, 0); 1215 } 1216 1217 Static void 1218 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1219 usbd_status status) 1220 { 1221 struct ugen_endpoint *sce = addr; 1222 u_int32_t count, n; 1223 char *tbuf; 1224 usbd_status err; 1225 1226 /* Return if we are aborting. */ 1227 if (status == USBD_CANCELLED) 1228 return; 1229 1230 if (status != USBD_NORMAL_COMPLETION) { 1231 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1232 sce->state |= UGEN_RA_WB_STOP; 1233 if (status == USBD_STALLED) 1234 usbd_clear_endpoint_stall_async(sce->pipeh); 1235 return; 1236 } 1237 1238 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1239 1240 /* Keep track of how much is in the buffer. */ 1241 sce->ra_wb_used -= count; 1242 1243 /* Update buffer pointers. */ 1244 sce->cur += count; 1245 if (sce->cur >= sce->limit) 1246 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1247 1248 /* Set up next request if necessary. */ 1249 if (sce->ra_wb_used > 0) { 1250 /* copy data from buffer */ 1251 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1252 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1253 n = min(count, sce->limit - sce->cur); 1254 memcpy(tbuf, sce->cur, n); 1255 tbuf += n; 1256 if (count - n > 0) 1257 memcpy(tbuf, sce->ibuf, count - n); 1258 1259 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1260 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1261 err = usbd_transfer(xfer); 1262 if (err != USBD_IN_PROGRESS) { 1263 printf("usbd_bulkwb_intr: error=%d\n", err); 1264 /* 1265 * The transfer has not been queued. Setting STOP 1266 * will make us try again at the next write. 1267 */ 1268 sce->state |= UGEN_RA_WB_STOP; 1269 } 1270 } 1271 else 1272 sce->state |= UGEN_RA_WB_STOP; 1273 1274 if (sce->state & UGEN_ASLP) { 1275 sce->state &= ~UGEN_ASLP; 1276 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1277 wakeup(sce); 1278 } 1279 selnotify(&sce->rsel, 0); 1280 } 1281 #endif 1282 1283 Static usbd_status 1284 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1285 { 1286 usbd_interface_handle iface; 1287 usb_endpoint_descriptor_t *ed; 1288 usbd_status err; 1289 struct ugen_endpoint *sce; 1290 u_int8_t niface, nendpt, endptno, endpt; 1291 int dir; 1292 1293 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1294 1295 err = usbd_interface_count(sc->sc_udev, &niface); 1296 if (err) 1297 return (err); 1298 if (ifaceidx < 0 || ifaceidx >= niface) 1299 return (USBD_INVAL); 1300 1301 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1302 if (err) 1303 return (err); 1304 err = usbd_endpoint_count(iface, &nendpt); 1305 if (err) 1306 return (err); 1307 /* XXX should only do this after setting new altno has succeeded */ 1308 for (endptno = 0; endptno < nendpt; endptno++) { 1309 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1310 endpt = ed->bEndpointAddress; 1311 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1312 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1313 sce->sc = 0; 1314 sce->edesc = 0; 1315 sce->iface = 0; 1316 } 1317 1318 /* change setting */ 1319 err = usbd_set_interface(iface, altno); 1320 if (err) 1321 return (err); 1322 1323 err = usbd_endpoint_count(iface, &nendpt); 1324 if (err) 1325 return (err); 1326 for (endptno = 0; endptno < nendpt; endptno++) { 1327 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1328 KASSERT(ed != NULL); 1329 endpt = ed->bEndpointAddress; 1330 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1331 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1332 sce->sc = sc; 1333 sce->edesc = ed; 1334 sce->iface = iface; 1335 } 1336 return (0); 1337 } 1338 1339 /* Retrieve a complete descriptor for a certain device and index. */ 1340 Static usb_config_descriptor_t * 1341 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1342 { 1343 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1344 int len; 1345 usbd_status err; 1346 1347 if (index == USB_CURRENT_CONFIG_INDEX) { 1348 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1349 len = UGETW(tdesc->wTotalLength); 1350 if (lenp) 1351 *lenp = len; 1352 cdesc = malloc(len, M_TEMP, M_WAITOK); 1353 memcpy(cdesc, tdesc, len); 1354 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1355 } else { 1356 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1357 if (err) 1358 return (0); 1359 len = UGETW(cdescr.wTotalLength); 1360 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1361 if (lenp) 1362 *lenp = len; 1363 cdesc = malloc(len, M_TEMP, M_WAITOK); 1364 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1365 if (err) { 1366 free(cdesc, M_TEMP); 1367 return (0); 1368 } 1369 } 1370 return (cdesc); 1371 } 1372 1373 Static int 1374 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1375 { 1376 usbd_interface_handle iface; 1377 usbd_status err; 1378 1379 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1380 if (err) 1381 return (-1); 1382 return (usbd_get_interface_altindex(iface)); 1383 } 1384 1385 Static int 1386 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1387 usb_ioctlarg_t addr, int flag, usb_proc_ptr p) 1388 { 1389 struct ugen_endpoint *sce; 1390 usbd_status err; 1391 usbd_interface_handle iface; 1392 struct usb_config_desc *cd; 1393 usb_config_descriptor_t *cdesc; 1394 struct usb_interface_desc *id; 1395 usb_interface_descriptor_t *idesc; 1396 struct usb_endpoint_desc *ed; 1397 usb_endpoint_descriptor_t *edesc; 1398 struct usb_alt_interface *ai; 1399 struct usb_string_desc *si; 1400 u_int8_t conf, alt; 1401 1402 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1403 if (sc->sc_dying) 1404 return (EIO); 1405 1406 switch (cmd) { 1407 case FIONBIO: 1408 /* All handled in the upper FS layer. */ 1409 return (0); 1410 case USB_SET_SHORT_XFER: 1411 if (endpt == USB_CONTROL_ENDPOINT) 1412 return (EINVAL); 1413 /* This flag only affects read */ 1414 sce = &sc->sc_endpoints[endpt][IN]; 1415 if (sce == NULL || sce->pipeh == NULL) 1416 return (EINVAL); 1417 if (*(int *)addr) 1418 sce->state |= UGEN_SHORT_OK; 1419 else 1420 sce->state &= ~UGEN_SHORT_OK; 1421 return (0); 1422 case USB_SET_TIMEOUT: 1423 sce = &sc->sc_endpoints[endpt][IN]; 1424 if (sce == NULL 1425 /* XXX this shouldn't happen, but the distinction between 1426 input and output pipes isn't clear enough. 1427 || sce->pipeh == NULL */ 1428 ) 1429 return (EINVAL); 1430 sce->timeout = *(int *)addr; 1431 return (0); 1432 case USB_SET_BULK_RA: 1433 #ifdef UGEN_BULK_RA_WB 1434 if (endpt == USB_CONTROL_ENDPOINT) 1435 return (EINVAL); 1436 sce = &sc->sc_endpoints[endpt][IN]; 1437 if (sce == NULL || sce->pipeh == NULL) 1438 return (EINVAL); 1439 edesc = sce->edesc; 1440 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1441 return (EINVAL); 1442 1443 if (*(int *)addr) { 1444 /* Only turn RA on if it's currently off. */ 1445 if (sce->state & UGEN_BULK_RA) 1446 return (0); 1447 1448 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1449 /* shouldn't happen */ 1450 return (EINVAL); 1451 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev, 1452 sce->pipeh); 1453 if (sce->ra_wb_xfer == NULL) 1454 return (ENOMEM); 1455 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1456 /* 1457 * Set up a dmabuf because we reuse the xfer with 1458 * the same (max) request length like isoc. 1459 */ 1460 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1461 sce->ra_wb_xferlen) == 0) { 1462 usbd_free_xfer(sce->ra_wb_xfer); 1463 return (ENOMEM); 1464 } 1465 sce->ibuf = malloc(sce->ra_wb_bufsize, 1466 M_USBDEV, M_WAITOK); 1467 sce->fill = sce->cur = sce->ibuf; 1468 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1469 sce->ra_wb_used = 0; 1470 sce->state |= UGEN_BULK_RA; 1471 sce->state &= ~UGEN_RA_WB_STOP; 1472 /* Now start reading. */ 1473 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1474 NULL, 1475 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1476 USBD_NO_COPY, USBD_NO_TIMEOUT, 1477 ugen_bulkra_intr); 1478 err = usbd_transfer(sce->ra_wb_xfer); 1479 if (err != USBD_IN_PROGRESS) { 1480 sce->state &= ~UGEN_BULK_RA; 1481 free(sce->ibuf, M_USBDEV); 1482 sce->ibuf = NULL; 1483 usbd_free_xfer(sce->ra_wb_xfer); 1484 return (EIO); 1485 } 1486 } else { 1487 /* Only turn RA off if it's currently on. */ 1488 if (!(sce->state & UGEN_BULK_RA)) 1489 return (0); 1490 1491 sce->state &= ~UGEN_BULK_RA; 1492 usbd_abort_pipe(sce->pipeh); 1493 usbd_free_xfer(sce->ra_wb_xfer); 1494 /* 1495 * XXX Discard whatever's in the buffer, but we 1496 * should keep it around and drain the buffer 1497 * instead. 1498 */ 1499 free(sce->ibuf, M_USBDEV); 1500 sce->ibuf = NULL; 1501 } 1502 return (0); 1503 #else 1504 return (EOPNOTSUPP); 1505 #endif 1506 case USB_SET_BULK_WB: 1507 #ifdef UGEN_BULK_RA_WB 1508 if (endpt == USB_CONTROL_ENDPOINT) 1509 return (EINVAL); 1510 sce = &sc->sc_endpoints[endpt][OUT]; 1511 if (sce == NULL || sce->pipeh == NULL) 1512 return (EINVAL); 1513 edesc = sce->edesc; 1514 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1515 return (EINVAL); 1516 1517 if (*(int *)addr) { 1518 /* Only turn WB on if it's currently off. */ 1519 if (sce->state & UGEN_BULK_WB) 1520 return (0); 1521 1522 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1523 /* shouldn't happen */ 1524 return (EINVAL); 1525 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev, 1526 sce->pipeh); 1527 if (sce->ra_wb_xfer == NULL) 1528 return (ENOMEM); 1529 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1530 /* 1531 * Set up a dmabuf because we reuse the xfer with 1532 * the same (max) request length like isoc. 1533 */ 1534 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1535 sce->ra_wb_xferlen) == 0) { 1536 usbd_free_xfer(sce->ra_wb_xfer); 1537 return (ENOMEM); 1538 } 1539 sce->ibuf = malloc(sce->ra_wb_bufsize, 1540 M_USBDEV, M_WAITOK); 1541 sce->fill = sce->cur = sce->ibuf; 1542 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1543 sce->ra_wb_used = 0; 1544 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1545 } else { 1546 /* Only turn WB off if it's currently on. */ 1547 if (!(sce->state & UGEN_BULK_WB)) 1548 return (0); 1549 1550 sce->state &= ~UGEN_BULK_WB; 1551 /* 1552 * XXX Discard whatever's in the buffer, but we 1553 * should keep it around and keep writing to 1554 * drain the buffer instead. 1555 */ 1556 usbd_abort_pipe(sce->pipeh); 1557 usbd_free_xfer(sce->ra_wb_xfer); 1558 free(sce->ibuf, M_USBDEV); 1559 sce->ibuf = NULL; 1560 } 1561 return (0); 1562 #else 1563 return (EOPNOTSUPP); 1564 #endif 1565 case USB_SET_BULK_RA_OPT: 1566 case USB_SET_BULK_WB_OPT: 1567 #ifdef UGEN_BULK_RA_WB 1568 { 1569 struct usb_bulk_ra_wb_opt *opt; 1570 1571 if (endpt == USB_CONTROL_ENDPOINT) 1572 return (EINVAL); 1573 opt = (struct usb_bulk_ra_wb_opt *)addr; 1574 if (cmd == USB_SET_BULK_RA_OPT) 1575 sce = &sc->sc_endpoints[endpt][IN]; 1576 else 1577 sce = &sc->sc_endpoints[endpt][OUT]; 1578 if (sce == NULL || sce->pipeh == NULL) 1579 return (EINVAL); 1580 if (opt->ra_wb_buffer_size < 1 || 1581 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1582 opt->ra_wb_request_size < 1 || 1583 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1584 return (EINVAL); 1585 /* 1586 * XXX These changes do not take effect until the 1587 * next time RA/WB mode is enabled but they ought to 1588 * take effect immediately. 1589 */ 1590 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1591 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1592 return (0); 1593 } 1594 #else 1595 return (EOPNOTSUPP); 1596 #endif 1597 default: 1598 break; 1599 } 1600 1601 if (endpt != USB_CONTROL_ENDPOINT) 1602 return (EINVAL); 1603 1604 switch (cmd) { 1605 #ifdef UGEN_DEBUG 1606 case USB_SETDEBUG: 1607 ugendebug = *(int *)addr; 1608 break; 1609 #endif 1610 case USB_GET_CONFIG: 1611 err = usbd_get_config(sc->sc_udev, &conf); 1612 if (err) 1613 return (EIO); 1614 *(int *)addr = conf; 1615 break; 1616 case USB_SET_CONFIG: 1617 if (!(flag & FWRITE)) 1618 return (EPERM); 1619 err = ugen_set_config(sc, *(int *)addr); 1620 switch (err) { 1621 case USBD_NORMAL_COMPLETION: 1622 break; 1623 case USBD_IN_USE: 1624 return (EBUSY); 1625 default: 1626 return (EIO); 1627 } 1628 break; 1629 case USB_GET_ALTINTERFACE: 1630 ai = (struct usb_alt_interface *)addr; 1631 err = usbd_device2interface_handle(sc->sc_udev, 1632 ai->uai_interface_index, &iface); 1633 if (err) 1634 return (EINVAL); 1635 idesc = usbd_get_interface_descriptor(iface); 1636 if (idesc == NULL) 1637 return (EIO); 1638 ai->uai_alt_no = idesc->bAlternateSetting; 1639 break; 1640 case USB_SET_ALTINTERFACE: 1641 if (!(flag & FWRITE)) 1642 return (EPERM); 1643 ai = (struct usb_alt_interface *)addr; 1644 err = usbd_device2interface_handle(sc->sc_udev, 1645 ai->uai_interface_index, &iface); 1646 if (err) 1647 return (EINVAL); 1648 err = ugen_set_interface(sc, ai->uai_interface_index, 1649 ai->uai_alt_no); 1650 if (err) 1651 return (EINVAL); 1652 break; 1653 case USB_GET_NO_ALT: 1654 ai = (struct usb_alt_interface *)addr; 1655 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1656 if (cdesc == NULL) 1657 return (EINVAL); 1658 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1659 if (idesc == NULL) { 1660 free(cdesc, M_TEMP); 1661 return (EINVAL); 1662 } 1663 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1664 idesc->bInterfaceNumber); 1665 free(cdesc, M_TEMP); 1666 break; 1667 case USB_GET_DEVICE_DESC: 1668 *(usb_device_descriptor_t *)addr = 1669 *usbd_get_device_descriptor(sc->sc_udev); 1670 break; 1671 case USB_GET_CONFIG_DESC: 1672 cd = (struct usb_config_desc *)addr; 1673 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1674 if (cdesc == NULL) 1675 return (EINVAL); 1676 cd->ucd_desc = *cdesc; 1677 free(cdesc, M_TEMP); 1678 break; 1679 case USB_GET_INTERFACE_DESC: 1680 id = (struct usb_interface_desc *)addr; 1681 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1682 if (cdesc == NULL) 1683 return (EINVAL); 1684 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1685 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1686 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1687 else 1688 alt = id->uid_alt_index; 1689 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1690 if (idesc == NULL) { 1691 free(cdesc, M_TEMP); 1692 return (EINVAL); 1693 } 1694 id->uid_desc = *idesc; 1695 free(cdesc, M_TEMP); 1696 break; 1697 case USB_GET_ENDPOINT_DESC: 1698 ed = (struct usb_endpoint_desc *)addr; 1699 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1700 if (cdesc == NULL) 1701 return (EINVAL); 1702 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1703 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1704 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1705 else 1706 alt = ed->ued_alt_index; 1707 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1708 alt, ed->ued_endpoint_index); 1709 if (edesc == NULL) { 1710 free(cdesc, M_TEMP); 1711 return (EINVAL); 1712 } 1713 ed->ued_desc = *edesc; 1714 free(cdesc, M_TEMP); 1715 break; 1716 case USB_GET_FULL_DESC: 1717 { 1718 int len; 1719 struct iovec iov; 1720 struct uio uio; 1721 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1722 int error; 1723 1724 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1725 if (len > fd->ufd_size) 1726 len = fd->ufd_size; 1727 iov.iov_base = (void *)fd->ufd_data; 1728 iov.iov_len = len; 1729 uio.uio_iov = &iov; 1730 uio.uio_iovcnt = 1; 1731 uio.uio_resid = len; 1732 uio.uio_offset = 0; 1733 uio.uio_rw = UIO_READ; 1734 USB_UIO_SET_PROC(&uio, p); 1735 error = uiomove((void *)cdesc, len, &uio); 1736 free(cdesc, M_TEMP); 1737 return (error); 1738 } 1739 case USB_GET_STRING_DESC: { 1740 int len; 1741 si = (struct usb_string_desc *)addr; 1742 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1743 si->usd_language_id, &si->usd_desc, &len); 1744 if (err) 1745 return (EINVAL); 1746 break; 1747 } 1748 case USB_DO_REQUEST: 1749 { 1750 struct usb_ctl_request *ur = (void *)addr; 1751 int len = UGETW(ur->ucr_request.wLength); 1752 struct iovec iov; 1753 struct uio uio; 1754 void *ptr = 0; 1755 usbd_status xerr; 1756 int error = 0; 1757 1758 if (!(flag & FWRITE)) 1759 return (EPERM); 1760 /* Avoid requests that would damage the bus integrity. */ 1761 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1762 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1763 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1764 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1765 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1766 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1767 return (EINVAL); 1768 1769 if (len < 0 || len > 32767) 1770 return (EINVAL); 1771 if (len != 0) { 1772 iov.iov_base = (void *)ur->ucr_data; 1773 iov.iov_len = len; 1774 uio.uio_iov = &iov; 1775 uio.uio_iovcnt = 1; 1776 uio.uio_resid = len; 1777 uio.uio_offset = 0; 1778 uio.uio_rw = 1779 ur->ucr_request.bmRequestType & UT_READ ? 1780 UIO_READ : UIO_WRITE; 1781 USB_UIO_SET_PROC(&uio, p); 1782 ptr = malloc(len, M_TEMP, M_WAITOK); 1783 if (uio.uio_rw == UIO_WRITE) { 1784 error = uiomove(ptr, len, &uio); 1785 if (error) 1786 goto ret; 1787 } 1788 } 1789 sce = &sc->sc_endpoints[endpt][IN]; 1790 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1791 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1792 if (xerr) { 1793 error = EIO; 1794 goto ret; 1795 } 1796 if (len != 0) { 1797 if (uio.uio_rw == UIO_READ) { 1798 error = uiomove(ptr, len, &uio); 1799 if (error) 1800 goto ret; 1801 } 1802 } 1803 ret: 1804 if (ptr) 1805 free(ptr, M_TEMP); 1806 return (error); 1807 } 1808 case USB_GET_DEVICEINFO: 1809 usbd_fill_deviceinfo(sc->sc_udev, 1810 (struct usb_device_info *)addr, 0); 1811 break; 1812 #ifdef COMPAT_30 1813 case USB_GET_DEVICEINFO_OLD: 1814 usbd_fill_deviceinfo_old(sc->sc_udev, 1815 (struct usb_device_info_old *)addr, 0); 1816 1817 break; 1818 #endif 1819 default: 1820 return (EINVAL); 1821 } 1822 return (0); 1823 } 1824 1825 int 1826 ugenioctl(dev_t dev, u_long cmd, usb_ioctlarg_t addr, int flag, usb_proc_ptr p) 1827 { 1828 int endpt = UGENENDPOINT(dev); 1829 struct ugen_softc *sc; 1830 int error; 1831 1832 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1833 1834 sc->sc_refcnt++; 1835 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, p); 1836 if (--sc->sc_refcnt < 0) 1837 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1838 return (error); 1839 } 1840 1841 int 1842 ugenpoll(dev_t dev, int events, usb_proc_ptr p) 1843 { 1844 struct ugen_softc *sc; 1845 struct ugen_endpoint *sce_in, *sce_out; 1846 int revents = 0; 1847 int s; 1848 1849 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1850 1851 if (sc->sc_dying) 1852 return (POLLHUP); 1853 1854 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1855 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1856 if (sce_in == NULL && sce_out == NULL) 1857 return (POLLERR); 1858 #ifdef DIAGNOSTIC 1859 if (!sce_in->edesc && !sce_out->edesc) { 1860 printf("ugenpoll: no edesc\n"); 1861 return (POLLERR); 1862 } 1863 /* It's possible to have only one pipe open. */ 1864 if (!sce_in->pipeh && !sce_out->pipeh) { 1865 printf("ugenpoll: no pipe\n"); 1866 return (POLLERR); 1867 } 1868 #endif 1869 s = splusb(); 1870 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1871 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1872 case UE_INTERRUPT: 1873 if (sce_in->q.c_cc > 0) 1874 revents |= events & (POLLIN | POLLRDNORM); 1875 else 1876 selrecord(p, &sce_in->rsel); 1877 break; 1878 case UE_ISOCHRONOUS: 1879 if (sce_in->cur != sce_in->fill) 1880 revents |= events & (POLLIN | POLLRDNORM); 1881 else 1882 selrecord(p, &sce_in->rsel); 1883 break; 1884 case UE_BULK: 1885 #ifdef UGEN_BULK_RA_WB 1886 if (sce_in->state & UGEN_BULK_RA) { 1887 if (sce_in->ra_wb_used > 0) 1888 revents |= events & 1889 (POLLIN | POLLRDNORM); 1890 else 1891 selrecord(p, &sce_in->rsel); 1892 break; 1893 } 1894 #endif 1895 /* 1896 * We have no easy way of determining if a read will 1897 * yield any data or a write will happen. 1898 * Pretend they will. 1899 */ 1900 revents |= events & (POLLIN | POLLRDNORM); 1901 break; 1902 default: 1903 break; 1904 } 1905 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1906 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1907 case UE_INTERRUPT: 1908 case UE_ISOCHRONOUS: 1909 /* XXX unimplemented */ 1910 break; 1911 case UE_BULK: 1912 #ifdef UGEN_BULK_RA_WB 1913 if (sce_out->state & UGEN_BULK_WB) { 1914 if (sce_out->ra_wb_used < 1915 sce_out->limit - sce_out->ibuf) 1916 revents |= events & 1917 (POLLOUT | POLLWRNORM); 1918 else 1919 selrecord(p, &sce_out->rsel); 1920 break; 1921 } 1922 #endif 1923 /* 1924 * We have no easy way of determining if a read will 1925 * yield any data or a write will happen. 1926 * Pretend they will. 1927 */ 1928 revents |= events & (POLLOUT | POLLWRNORM); 1929 break; 1930 default: 1931 break; 1932 } 1933 1934 1935 splx(s); 1936 return (revents); 1937 } 1938 1939 static void 1940 filt_ugenrdetach(struct knote *kn) 1941 { 1942 struct ugen_endpoint *sce = kn->kn_hook; 1943 int s; 1944 1945 s = splusb(); 1946 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1947 splx(s); 1948 } 1949 1950 static int 1951 filt_ugenread_intr(struct knote *kn, long hint) 1952 { 1953 struct ugen_endpoint *sce = kn->kn_hook; 1954 1955 kn->kn_data = sce->q.c_cc; 1956 return (kn->kn_data > 0); 1957 } 1958 1959 static int 1960 filt_ugenread_isoc(struct knote *kn, long hint) 1961 { 1962 struct ugen_endpoint *sce = kn->kn_hook; 1963 1964 if (sce->cur == sce->fill) 1965 return (0); 1966 1967 if (sce->cur < sce->fill) 1968 kn->kn_data = sce->fill - sce->cur; 1969 else 1970 kn->kn_data = (sce->limit - sce->cur) + 1971 (sce->fill - sce->ibuf); 1972 1973 return (1); 1974 } 1975 1976 #ifdef UGEN_BULK_RA_WB 1977 static int 1978 filt_ugenread_bulk(struct knote *kn, long hint) 1979 { 1980 struct ugen_endpoint *sce = kn->kn_hook; 1981 1982 if (!(sce->state & UGEN_BULK_RA)) 1983 /* 1984 * We have no easy way of determining if a read will 1985 * yield any data or a write will happen. 1986 * So, emulate "seltrue". 1987 */ 1988 return (filt_seltrue(kn, hint)); 1989 1990 if (sce->ra_wb_used == 0) 1991 return (0); 1992 1993 kn->kn_data = sce->ra_wb_used; 1994 1995 return (1); 1996 } 1997 1998 static int 1999 filt_ugenwrite_bulk(struct knote *kn, long hint) 2000 { 2001 struct ugen_endpoint *sce = kn->kn_hook; 2002 2003 if (!(sce->state & UGEN_BULK_WB)) 2004 /* 2005 * We have no easy way of determining if a read will 2006 * yield any data or a write will happen. 2007 * So, emulate "seltrue". 2008 */ 2009 return (filt_seltrue(kn, hint)); 2010 2011 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2012 return (0); 2013 2014 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2015 2016 return (1); 2017 } 2018 #endif 2019 2020 static const struct filterops ugenread_intr_filtops = 2021 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2022 2023 static const struct filterops ugenread_isoc_filtops = 2024 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2025 2026 #ifdef UGEN_BULK_RA_WB 2027 static const struct filterops ugenread_bulk_filtops = 2028 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2029 2030 static const struct filterops ugenwrite_bulk_filtops = 2031 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2032 #else 2033 static const struct filterops ugen_seltrue_filtops = 2034 { 1, NULL, filt_ugenrdetach, filt_seltrue }; 2035 #endif 2036 2037 int 2038 ugenkqfilter(dev_t dev, struct knote *kn) 2039 { 2040 struct ugen_softc *sc; 2041 struct ugen_endpoint *sce; 2042 struct klist *klist; 2043 int s; 2044 2045 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2046 2047 if (sc->sc_dying) 2048 return (1); 2049 2050 switch (kn->kn_filter) { 2051 case EVFILT_READ: 2052 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2053 if (sce == NULL) 2054 return (1); 2055 2056 klist = &sce->rsel.sel_klist; 2057 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2058 case UE_INTERRUPT: 2059 kn->kn_fop = &ugenread_intr_filtops; 2060 break; 2061 case UE_ISOCHRONOUS: 2062 kn->kn_fop = &ugenread_isoc_filtops; 2063 break; 2064 case UE_BULK: 2065 #ifdef UGEN_BULK_RA_WB 2066 kn->kn_fop = &ugenread_bulk_filtops; 2067 break; 2068 #else 2069 /* 2070 * We have no easy way of determining if a read will 2071 * yield any data or a write will happen. 2072 * So, emulate "seltrue". 2073 */ 2074 kn->kn_fop = &ugen_seltrue_filtops; 2075 #endif 2076 break; 2077 default: 2078 return (1); 2079 } 2080 break; 2081 2082 case EVFILT_WRITE: 2083 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2084 if (sce == NULL) 2085 return (1); 2086 2087 klist = &sce->rsel.sel_klist; 2088 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2089 case UE_INTERRUPT: 2090 case UE_ISOCHRONOUS: 2091 /* XXX poll doesn't support this */ 2092 return (1); 2093 2094 case UE_BULK: 2095 #ifdef UGEN_BULK_RA_WB 2096 kn->kn_fop = &ugenwrite_bulk_filtops; 2097 #else 2098 /* 2099 * We have no easy way of determining if a read will 2100 * yield any data or a write will happen. 2101 * So, emulate "seltrue". 2102 */ 2103 kn->kn_fop = &ugen_seltrue_filtops; 2104 #endif 2105 break; 2106 default: 2107 return (1); 2108 } 2109 break; 2110 2111 default: 2112 return (1); 2113 } 2114 2115 kn->kn_hook = sce; 2116 2117 s = splusb(); 2118 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2119 splx(s); 2120 2121 return (0); 2122 } 2123 2124 #if defined(__FreeBSD__) 2125 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2126 #endif 2127
Indexes created Sun Oct 19 02:09:48 GMT 2025