ugen.c revision 1.95
1 /* $NetBSD: ugen.c,v 1.95 2007/12/09 20:28:24 jmcneill 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 1.95 2007/12/09 20:28:24 jmcneill 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 void *, int, struct lwp *); 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 aprint_normal("%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 aprint_error("%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 aprint_error("%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 if (!pmf_device_register(self, NULL, NULL)) 275 aprint_error_dev(self, "couldn't establish power handler\n"); 276 277 USB_ATTACH_SUCCESS_RETURN; 278 } 279 280 Static int 281 ugen_set_config(struct ugen_softc *sc, int configno) 282 { 283 usbd_device_handle dev = sc->sc_udev; 284 usbd_interface_handle iface; 285 usb_endpoint_descriptor_t *ed; 286 struct ugen_endpoint *sce; 287 u_int8_t niface, nendpt; 288 int ifaceno, endptno, endpt; 289 usbd_status err; 290 int dir; 291 292 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 293 USBDEVNAME(sc->sc_dev), configno, sc)); 294 295 /* 296 * We start at 1, not 0, because we don't care whether the 297 * control endpoint is open or not. It is always present. 298 */ 299 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 300 if (sc->sc_is_open[endptno]) { 301 DPRINTFN(1, 302 ("ugen_set_config: %s - endpoint %d is open\n", 303 USBDEVNAME(sc->sc_dev), endptno)); 304 return (USBD_IN_USE); 305 } 306 307 /* Avoid setting the current value. */ 308 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 309 err = usbd_set_config_no(dev, configno, 1); 310 if (err) 311 return (err); 312 } 313 314 err = usbd_interface_count(dev, &niface); 315 if (err) 316 return (err); 317 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 318 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 319 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 320 err = usbd_device2interface_handle(dev, ifaceno, &iface); 321 if (err) 322 return (err); 323 err = usbd_endpoint_count(iface, &nendpt); 324 if (err) 325 return (err); 326 for (endptno = 0; endptno < nendpt; endptno++) { 327 ed = usbd_interface2endpoint_descriptor(iface,endptno); 328 KASSERT(ed != NULL); 329 endpt = ed->bEndpointAddress; 330 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 331 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 332 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 333 "(%d,%d), sce=%p\n", 334 endptno, endpt, UE_GET_ADDR(endpt), 335 UE_GET_DIR(endpt), sce)); 336 sce->sc = sc; 337 sce->edesc = ed; 338 sce->iface = iface; 339 } 340 } 341 return (USBD_NORMAL_COMPLETION); 342 } 343 344 int 345 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 346 { 347 struct ugen_softc *sc; 348 int unit = UGENUNIT(dev); 349 int endpt = UGENENDPOINT(dev); 350 usb_endpoint_descriptor_t *edesc; 351 struct ugen_endpoint *sce; 352 int dir, isize; 353 usbd_status err; 354 usbd_xfer_handle xfer; 355 void *tbuf; 356 int i, j; 357 358 USB_GET_SC_OPEN(ugen, unit, sc); 359 360 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 361 flag, mode, unit, endpt)); 362 363 if (sc == NULL || sc->sc_dying) 364 return (ENXIO); 365 366 /* The control endpoint allows multiple opens. */ 367 if (endpt == USB_CONTROL_ENDPOINT) { 368 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 369 return (0); 370 } 371 372 if (sc->sc_is_open[endpt]) 373 return (EBUSY); 374 375 /* Make sure there are pipes for all directions. */ 376 for (dir = OUT; dir <= IN; dir++) { 377 if (flag & (dir == OUT ? FWRITE : FREAD)) { 378 sce = &sc->sc_endpoints[endpt][dir]; 379 if (sce == 0 || sce->edesc == 0) 380 return (ENXIO); 381 } 382 } 383 384 /* Actually open the pipes. */ 385 /* XXX Should back out properly if it fails. */ 386 for (dir = OUT; dir <= IN; dir++) { 387 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 388 continue; 389 sce = &sc->sc_endpoints[endpt][dir]; 390 sce->state = 0; 391 sce->timeout = USBD_NO_TIMEOUT; 392 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 393 sc, endpt, dir, sce)); 394 edesc = sce->edesc; 395 switch (edesc->bmAttributes & UE_XFERTYPE) { 396 case UE_INTERRUPT: 397 if (dir == OUT) { 398 err = usbd_open_pipe(sce->iface, 399 edesc->bEndpointAddress, 0, &sce->pipeh); 400 if (err) 401 return (EIO); 402 break; 403 } 404 isize = UGETW(edesc->wMaxPacketSize); 405 if (isize == 0) /* shouldn't happen */ 406 return (EINVAL); 407 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 408 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 409 endpt, isize)); 410 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 411 return (ENOMEM); 412 err = usbd_open_pipe_intr(sce->iface, 413 edesc->bEndpointAddress, 414 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 415 sce->ibuf, isize, ugenintr, 416 USBD_DEFAULT_INTERVAL); 417 if (err) { 418 free(sce->ibuf, M_USBDEV); 419 clfree(&sce->q); 420 return (EIO); 421 } 422 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 423 break; 424 case UE_BULK: 425 err = usbd_open_pipe(sce->iface, 426 edesc->bEndpointAddress, 0, &sce->pipeh); 427 if (err) 428 return (EIO); 429 #ifdef UGEN_BULK_RA_WB 430 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 431 /* 432 * Use request size for non-RA/WB transfers 433 * as the default. 434 */ 435 sce->ra_wb_reqsize = UGEN_BBSIZE; 436 #endif 437 break; 438 case UE_ISOCHRONOUS: 439 if (dir == OUT) 440 return (EINVAL); 441 isize = UGETW(edesc->wMaxPacketSize); 442 if (isize == 0) /* shouldn't happen */ 443 return (EINVAL); 444 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 445 M_USBDEV, M_WAITOK); 446 sce->cur = sce->fill = sce->ibuf; 447 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 448 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 449 endpt, isize)); 450 err = usbd_open_pipe(sce->iface, 451 edesc->bEndpointAddress, 0, &sce->pipeh); 452 if (err) { 453 free(sce->ibuf, M_USBDEV); 454 return (EIO); 455 } 456 for(i = 0; i < UGEN_NISOREQS; ++i) { 457 sce->isoreqs[i].sce = sce; 458 xfer = usbd_alloc_xfer(sc->sc_udev); 459 if (xfer == 0) 460 goto bad; 461 sce->isoreqs[i].xfer = xfer; 462 tbuf = usbd_alloc_buffer 463 (xfer, isize * UGEN_NISORFRMS); 464 if (tbuf == 0) { 465 i++; 466 goto bad; 467 } 468 sce->isoreqs[i].dmabuf = tbuf; 469 for(j = 0; j < UGEN_NISORFRMS; ++j) 470 sce->isoreqs[i].sizes[j] = isize; 471 usbd_setup_isoc_xfer 472 (xfer, sce->pipeh, &sce->isoreqs[i], 473 sce->isoreqs[i].sizes, 474 UGEN_NISORFRMS, USBD_NO_COPY, 475 ugen_isoc_rintr); 476 (void)usbd_transfer(xfer); 477 } 478 DPRINTFN(5, ("ugenopen: isoc open done\n")); 479 break; 480 bad: 481 while (--i >= 0) /* implicit buffer free */ 482 usbd_free_xfer(sce->isoreqs[i].xfer); 483 return (ENOMEM); 484 case UE_CONTROL: 485 sce->timeout = USBD_DEFAULT_TIMEOUT; 486 return (EINVAL); 487 } 488 } 489 sc->sc_is_open[endpt] = 1; 490 return (0); 491 } 492 493 int 494 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 495 { 496 int endpt = UGENENDPOINT(dev); 497 struct ugen_softc *sc; 498 struct ugen_endpoint *sce; 499 int dir; 500 int i; 501 502 USB_GET_SC(ugen, UGENUNIT(dev), sc); 503 504 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 505 flag, mode, UGENUNIT(dev), endpt)); 506 507 #ifdef DIAGNOSTIC 508 if (!sc->sc_is_open[endpt]) { 509 printf("ugenclose: not open\n"); 510 return (EINVAL); 511 } 512 #endif 513 514 if (endpt == USB_CONTROL_ENDPOINT) { 515 DPRINTFN(5, ("ugenclose: close control\n")); 516 sc->sc_is_open[endpt] = 0; 517 return (0); 518 } 519 520 for (dir = OUT; dir <= IN; dir++) { 521 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 522 continue; 523 sce = &sc->sc_endpoints[endpt][dir]; 524 if (sce == NULL || sce->pipeh == NULL) 525 continue; 526 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 527 endpt, dir, sce)); 528 529 usbd_abort_pipe(sce->pipeh); 530 usbd_close_pipe(sce->pipeh); 531 sce->pipeh = NULL; 532 533 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 534 case UE_INTERRUPT: 535 ndflush(&sce->q, sce->q.c_cc); 536 clfree(&sce->q); 537 break; 538 case UE_ISOCHRONOUS: 539 for (i = 0; i < UGEN_NISOREQS; ++i) 540 usbd_free_xfer(sce->isoreqs[i].xfer); 541 break; 542 #ifdef UGEN_BULK_RA_WB 543 case UE_BULK: 544 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 545 /* ibuf freed below */ 546 usbd_free_xfer(sce->ra_wb_xfer); 547 break; 548 #endif 549 default: 550 break; 551 } 552 553 if (sce->ibuf != NULL) { 554 free(sce->ibuf, M_USBDEV); 555 sce->ibuf = NULL; 556 clfree(&sce->q); 557 } 558 } 559 sc->sc_is_open[endpt] = 0; 560 561 return (0); 562 } 563 564 Static int 565 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 566 { 567 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 568 u_int32_t n, tn; 569 usbd_xfer_handle xfer; 570 usbd_status err; 571 int s; 572 int error = 0; 573 574 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 575 576 if (sc->sc_dying) 577 return (EIO); 578 579 if (endpt == USB_CONTROL_ENDPOINT) 580 return (ENODEV); 581 582 #ifdef DIAGNOSTIC 583 if (sce->edesc == NULL) { 584 printf("ugenread: no edesc\n"); 585 return (EIO); 586 } 587 if (sce->pipeh == NULL) { 588 printf("ugenread: no pipe\n"); 589 return (EIO); 590 } 591 #endif 592 593 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 594 case UE_INTERRUPT: 595 /* Block until activity occurred. */ 596 s = splusb(); 597 while (sce->q.c_cc == 0) { 598 if (flag & IO_NDELAY) { 599 splx(s); 600 return (EWOULDBLOCK); 601 } 602 sce->state |= UGEN_ASLP; 603 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 604 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 605 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 606 if (sc->sc_dying) 607 error = EIO; 608 if (error) { 609 sce->state &= ~UGEN_ASLP; 610 break; 611 } 612 } 613 splx(s); 614 615 /* Transfer as many chunks as possible. */ 616 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 617 n = min(sce->q.c_cc, uio->uio_resid); 618 if (n > sizeof(sc->sc_buffer)) 619 n = sizeof(sc->sc_buffer); 620 621 /* Remove a small chunk from the input queue. */ 622 q_to_b(&sce->q, sc->sc_buffer, n); 623 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 624 625 /* Copy the data to the user process. */ 626 error = uiomove(sc->sc_buffer, n, uio); 627 if (error) 628 break; 629 } 630 break; 631 case UE_BULK: 632 #ifdef UGEN_BULK_RA_WB 633 if (sce->state & UGEN_BULK_RA) { 634 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 635 uio->uio_resid, sce->ra_wb_used)); 636 xfer = sce->ra_wb_xfer; 637 638 s = splusb(); 639 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 640 splx(s); 641 return (EWOULDBLOCK); 642 } 643 while (uio->uio_resid > 0 && !error) { 644 while (sce->ra_wb_used == 0) { 645 sce->state |= UGEN_ASLP; 646 DPRINTFN(5, 647 ("ugenread: sleep on %p\n", 648 sce)); 649 error = tsleep(sce, PZERO | PCATCH, 650 "ugenrb", 0); 651 DPRINTFN(5, 652 ("ugenread: woke, error=%d\n", 653 error)); 654 if (sc->sc_dying) 655 error = EIO; 656 if (error) { 657 sce->state &= ~UGEN_ASLP; 658 break; 659 } 660 } 661 662 /* Copy data to the process. */ 663 while (uio->uio_resid > 0 664 && sce->ra_wb_used > 0) { 665 n = min(uio->uio_resid, 666 sce->ra_wb_used); 667 n = min(n, sce->limit - sce->cur); 668 error = uiomove(sce->cur, n, uio); 669 if (error) 670 break; 671 sce->cur += n; 672 sce->ra_wb_used -= n; 673 if (sce->cur == sce->limit) 674 sce->cur = sce->ibuf; 675 } 676 677 /* 678 * If the transfers stopped because the 679 * buffer was full, restart them. 680 */ 681 if (sce->state & UGEN_RA_WB_STOP && 682 sce->ra_wb_used < sce->limit - sce->ibuf) { 683 n = (sce->limit - sce->ibuf) 684 - sce->ra_wb_used; 685 usbd_setup_xfer(xfer, 686 sce->pipeh, sce, NULL, 687 min(n, sce->ra_wb_xferlen), 688 USBD_NO_COPY, USBD_NO_TIMEOUT, 689 ugen_bulkra_intr); 690 sce->state &= ~UGEN_RA_WB_STOP; 691 err = usbd_transfer(xfer); 692 if (err != USBD_IN_PROGRESS) 693 /* 694 * The transfer has not been 695 * queued. Setting STOP 696 * will make us try 697 * again at the next read. 698 */ 699 sce->state |= UGEN_RA_WB_STOP; 700 } 701 } 702 splx(s); 703 break; 704 } 705 #endif 706 xfer = usbd_alloc_xfer(sc->sc_udev); 707 if (xfer == 0) 708 return (ENOMEM); 709 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 710 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 711 tn = n; 712 err = usbd_bulk_transfer( 713 xfer, sce->pipeh, 714 sce->state & UGEN_SHORT_OK ? 715 USBD_SHORT_XFER_OK : 0, 716 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 717 if (err) { 718 if (err == USBD_INTERRUPTED) 719 error = EINTR; 720 else if (err == USBD_TIMEOUT) 721 error = ETIMEDOUT; 722 else 723 error = EIO; 724 break; 725 } 726 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 727 error = uiomove(sc->sc_buffer, tn, uio); 728 if (error || tn < n) 729 break; 730 } 731 usbd_free_xfer(xfer); 732 break; 733 case UE_ISOCHRONOUS: 734 s = splusb(); 735 while (sce->cur == sce->fill) { 736 if (flag & IO_NDELAY) { 737 splx(s); 738 return (EWOULDBLOCK); 739 } 740 sce->state |= UGEN_ASLP; 741 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 742 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 743 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 744 if (sc->sc_dying) 745 error = EIO; 746 if (error) { 747 sce->state &= ~UGEN_ASLP; 748 break; 749 } 750 } 751 752 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 753 if(sce->fill > sce->cur) 754 n = min(sce->fill - sce->cur, uio->uio_resid); 755 else 756 n = min(sce->limit - sce->cur, uio->uio_resid); 757 758 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 759 760 /* Copy the data to the user process. */ 761 error = uiomove(sce->cur, n, uio); 762 if (error) 763 break; 764 sce->cur += n; 765 if(sce->cur >= sce->limit) 766 sce->cur = sce->ibuf; 767 } 768 splx(s); 769 break; 770 771 772 default: 773 return (ENXIO); 774 } 775 return (error); 776 } 777 778 int 779 ugenread(dev_t dev, struct uio *uio, int flag) 780 { 781 int endpt = UGENENDPOINT(dev); 782 struct ugen_softc *sc; 783 int error; 784 785 USB_GET_SC(ugen, UGENUNIT(dev), sc); 786 787 sc->sc_refcnt++; 788 error = ugen_do_read(sc, endpt, uio, flag); 789 if (--sc->sc_refcnt < 0) 790 usb_detach_wakeup(USBDEV(sc->sc_dev)); 791 return (error); 792 } 793 794 Static int 795 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 796 int flag) 797 { 798 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 799 u_int32_t n; 800 int error = 0; 801 #ifdef UGEN_BULK_RA_WB 802 int s; 803 u_int32_t tn; 804 char *dbuf; 805 #endif 806 usbd_xfer_handle xfer; 807 usbd_status err; 808 809 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 810 811 if (sc->sc_dying) 812 return (EIO); 813 814 if (endpt == USB_CONTROL_ENDPOINT) 815 return (ENODEV); 816 817 #ifdef DIAGNOSTIC 818 if (sce->edesc == NULL) { 819 printf("ugenwrite: no edesc\n"); 820 return (EIO); 821 } 822 if (sce->pipeh == NULL) { 823 printf("ugenwrite: no pipe\n"); 824 return (EIO); 825 } 826 #endif 827 828 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 829 case UE_BULK: 830 #ifdef UGEN_BULK_RA_WB 831 if (sce->state & UGEN_BULK_WB) { 832 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 833 uio->uio_resid, sce->ra_wb_used)); 834 xfer = sce->ra_wb_xfer; 835 836 s = splusb(); 837 if (sce->ra_wb_used == sce->limit - sce->ibuf && 838 flag & IO_NDELAY) { 839 splx(s); 840 return (EWOULDBLOCK); 841 } 842 while (uio->uio_resid > 0 && !error) { 843 while (sce->ra_wb_used == 844 sce->limit - sce->ibuf) { 845 sce->state |= UGEN_ASLP; 846 DPRINTFN(5, 847 ("ugenwrite: sleep on %p\n", 848 sce)); 849 error = tsleep(sce, PZERO | PCATCH, 850 "ugenwb", 0); 851 DPRINTFN(5, 852 ("ugenwrite: woke, error=%d\n", 853 error)); 854 if (sc->sc_dying) 855 error = EIO; 856 if (error) { 857 sce->state &= ~UGEN_ASLP; 858 break; 859 } 860 } 861 862 /* Copy data from the process. */ 863 while (uio->uio_resid > 0 && 864 sce->ra_wb_used < sce->limit - sce->ibuf) { 865 n = min(uio->uio_resid, 866 (sce->limit - sce->ibuf) 867 - sce->ra_wb_used); 868 n = min(n, sce->limit - sce->fill); 869 error = uiomove(sce->fill, n, uio); 870 if (error) 871 break; 872 sce->fill += n; 873 sce->ra_wb_used += n; 874 if (sce->fill == sce->limit) 875 sce->fill = sce->ibuf; 876 } 877 878 /* 879 * If the transfers stopped because the 880 * buffer was empty, restart them. 881 */ 882 if (sce->state & UGEN_RA_WB_STOP && 883 sce->ra_wb_used > 0) { 884 dbuf = (char *)usbd_get_buffer(xfer); 885 n = min(sce->ra_wb_used, 886 sce->ra_wb_xferlen); 887 tn = min(n, sce->limit - sce->cur); 888 memcpy(dbuf, sce->cur, tn); 889 dbuf += tn; 890 if (n - tn > 0) 891 memcpy(dbuf, sce->ibuf, 892 n - tn); 893 usbd_setup_xfer(xfer, 894 sce->pipeh, sce, NULL, n, 895 USBD_NO_COPY, USBD_NO_TIMEOUT, 896 ugen_bulkwb_intr); 897 sce->state &= ~UGEN_RA_WB_STOP; 898 err = usbd_transfer(xfer); 899 if (err != USBD_IN_PROGRESS) 900 /* 901 * The transfer has not been 902 * queued. Setting STOP 903 * will make us try again 904 * at the next read. 905 */ 906 sce->state |= UGEN_RA_WB_STOP; 907 } 908 } 909 splx(s); 910 break; 911 } 912 #endif 913 xfer = usbd_alloc_xfer(sc->sc_udev); 914 if (xfer == 0) 915 return (EIO); 916 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 917 error = uiomove(sc->sc_buffer, n, uio); 918 if (error) 919 break; 920 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 921 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 922 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 923 if (err) { 924 if (err == USBD_INTERRUPTED) 925 error = EINTR; 926 else if (err == USBD_TIMEOUT) 927 error = ETIMEDOUT; 928 else 929 error = EIO; 930 break; 931 } 932 } 933 usbd_free_xfer(xfer); 934 break; 935 case UE_INTERRUPT: 936 xfer = usbd_alloc_xfer(sc->sc_udev); 937 if (xfer == 0) 938 return (EIO); 939 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 940 uio->uio_resid)) != 0) { 941 error = uiomove(sc->sc_buffer, n, uio); 942 if (error) 943 break; 944 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 945 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 946 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 947 if (err) { 948 if (err == USBD_INTERRUPTED) 949 error = EINTR; 950 else if (err == USBD_TIMEOUT) 951 error = ETIMEDOUT; 952 else 953 error = EIO; 954 break; 955 } 956 } 957 usbd_free_xfer(xfer); 958 break; 959 default: 960 return (ENXIO); 961 } 962 return (error); 963 } 964 965 int 966 ugenwrite(dev_t dev, struct uio *uio, int flag) 967 { 968 int endpt = UGENENDPOINT(dev); 969 struct ugen_softc *sc; 970 int error; 971 972 USB_GET_SC(ugen, UGENUNIT(dev), sc); 973 974 sc->sc_refcnt++; 975 error = ugen_do_write(sc, endpt, uio, flag); 976 if (--sc->sc_refcnt < 0) 977 usb_detach_wakeup(USBDEV(sc->sc_dev)); 978 return (error); 979 } 980 981 #if defined(__NetBSD__) || defined(__OpenBSD__) 982 int 983 ugen_activate(device_ptr_t self, enum devact act) 984 { 985 struct ugen_softc *sc = (struct ugen_softc *)self; 986 987 switch (act) { 988 case DVACT_ACTIVATE: 989 return (EOPNOTSUPP); 990 991 case DVACT_DEACTIVATE: 992 sc->sc_dying = 1; 993 break; 994 } 995 return (0); 996 } 997 #endif 998 999 USB_DETACH(ugen) 1000 { 1001 USB_DETACH_START(ugen, sc); 1002 struct ugen_endpoint *sce; 1003 int i, dir; 1004 int s; 1005 #if defined(__NetBSD__) || defined(__OpenBSD__) 1006 int maj, mn; 1007 1008 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1009 #elif defined(__FreeBSD__) 1010 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1011 #endif 1012 1013 sc->sc_dying = 1; 1014 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1015 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1016 for (dir = OUT; dir <= IN; dir++) { 1017 sce = &sc->sc_endpoints[i][dir]; 1018 if (sce && sce->pipeh) 1019 usbd_abort_pipe(sce->pipeh); 1020 } 1021 } 1022 1023 s = splusb(); 1024 if (--sc->sc_refcnt >= 0) { 1025 /* Wake everyone */ 1026 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1027 wakeup(&sc->sc_endpoints[i][IN]); 1028 /* Wait for processes to go away. */ 1029 usb_detach_wait(USBDEV(sc->sc_dev)); 1030 } 1031 splx(s); 1032 1033 #if defined(__NetBSD__) || defined(__OpenBSD__) 1034 /* locate the major number */ 1035 #if defined(__NetBSD__) 1036 maj = cdevsw_lookup_major(&ugen_cdevsw); 1037 #elif defined(__OpenBSD__) 1038 for (maj = 0; maj < nchrdev; maj++) 1039 if (cdevsw[maj].d_open == ugenopen) 1040 break; 1041 #endif 1042 1043 /* Nuke the vnodes for any open instances (calls close). */ 1044 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1045 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1046 #elif defined(__FreeBSD__) 1047 /* XXX not implemented yet */ 1048 #endif 1049 1050 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1051 USBDEV(sc->sc_dev)); 1052 1053 return (0); 1054 } 1055 1056 Static void 1057 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1058 { 1059 struct ugen_endpoint *sce = addr; 1060 /*struct ugen_softc *sc = sce->sc;*/ 1061 u_int32_t count; 1062 u_char *ibuf; 1063 1064 if (status == USBD_CANCELLED) 1065 return; 1066 1067 if (status != USBD_NORMAL_COMPLETION) { 1068 DPRINTF(("ugenintr: status=%d\n", status)); 1069 if (status == USBD_STALLED) 1070 usbd_clear_endpoint_stall_async(sce->pipeh); 1071 return; 1072 } 1073 1074 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1075 ibuf = sce->ibuf; 1076 1077 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1078 xfer, status, count)); 1079 DPRINTFN(5, (" data = %02x %02x %02x\n", 1080 ibuf[0], ibuf[1], ibuf[2])); 1081 1082 (void)b_to_q(ibuf, count, &sce->q); 1083 1084 if (sce->state & UGEN_ASLP) { 1085 sce->state &= ~UGEN_ASLP; 1086 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1087 wakeup(sce); 1088 } 1089 selnotify(&sce->rsel, 0); 1090 } 1091 1092 Static void 1093 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1094 usbd_status status) 1095 { 1096 struct isoreq *req = addr; 1097 struct ugen_endpoint *sce = req->sce; 1098 u_int32_t count, n; 1099 int i, isize; 1100 1101 /* Return if we are aborting. */ 1102 if (status == USBD_CANCELLED) 1103 return; 1104 1105 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1106 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1107 (long)(req - sce->isoreqs), count)); 1108 1109 /* throw away oldest input if the buffer is full */ 1110 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1111 sce->cur += count; 1112 if(sce->cur >= sce->limit) 1113 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1114 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1115 count)); 1116 } 1117 1118 isize = UGETW(sce->edesc->wMaxPacketSize); 1119 for (i = 0; i < UGEN_NISORFRMS; i++) { 1120 u_int32_t actlen = req->sizes[i]; 1121 char const *tbuf = (char const *)req->dmabuf + isize * i; 1122 1123 /* copy data to buffer */ 1124 while (actlen > 0) { 1125 n = min(actlen, sce->limit - sce->fill); 1126 memcpy(sce->fill, tbuf, n); 1127 1128 tbuf += n; 1129 actlen -= n; 1130 sce->fill += n; 1131 if(sce->fill == sce->limit) 1132 sce->fill = sce->ibuf; 1133 } 1134 1135 /* setup size for next transfer */ 1136 req->sizes[i] = isize; 1137 } 1138 1139 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1140 USBD_NO_COPY, ugen_isoc_rintr); 1141 (void)usbd_transfer(xfer); 1142 1143 if (sce->state & UGEN_ASLP) { 1144 sce->state &= ~UGEN_ASLP; 1145 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1146 wakeup(sce); 1147 } 1148 selnotify(&sce->rsel, 0); 1149 } 1150 1151 #ifdef UGEN_BULK_RA_WB 1152 Static void 1153 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1154 usbd_status status) 1155 { 1156 struct ugen_endpoint *sce = addr; 1157 u_int32_t count, n; 1158 char const *tbuf; 1159 usbd_status err; 1160 1161 /* Return if we are aborting. */ 1162 if (status == USBD_CANCELLED) 1163 return; 1164 1165 if (status != USBD_NORMAL_COMPLETION) { 1166 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1167 sce->state |= UGEN_RA_WB_STOP; 1168 if (status == USBD_STALLED) 1169 usbd_clear_endpoint_stall_async(sce->pipeh); 1170 return; 1171 } 1172 1173 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1174 1175 /* Keep track of how much is in the buffer. */ 1176 sce->ra_wb_used += count; 1177 1178 /* Copy data to buffer. */ 1179 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1180 n = min(count, sce->limit - sce->fill); 1181 memcpy(sce->fill, tbuf, n); 1182 tbuf += n; 1183 count -= n; 1184 sce->fill += n; 1185 if (sce->fill == sce->limit) 1186 sce->fill = sce->ibuf; 1187 if (count > 0) { 1188 memcpy(sce->fill, tbuf, count); 1189 sce->fill += count; 1190 } 1191 1192 /* Set up the next request if necessary. */ 1193 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1194 if (n > 0) { 1195 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1196 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1197 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1198 err = usbd_transfer(xfer); 1199 if (err != USBD_IN_PROGRESS) { 1200 printf("usbd_bulkra_intr: error=%d\n", err); 1201 /* 1202 * The transfer has not been queued. Setting STOP 1203 * will make us try again at the next read. 1204 */ 1205 sce->state |= UGEN_RA_WB_STOP; 1206 } 1207 } 1208 else 1209 sce->state |= UGEN_RA_WB_STOP; 1210 1211 if (sce->state & UGEN_ASLP) { 1212 sce->state &= ~UGEN_ASLP; 1213 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1214 wakeup(sce); 1215 } 1216 selnotify(&sce->rsel, 0); 1217 } 1218 1219 Static void 1220 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1221 usbd_status status) 1222 { 1223 struct ugen_endpoint *sce = addr; 1224 u_int32_t count, n; 1225 char *tbuf; 1226 usbd_status err; 1227 1228 /* Return if we are aborting. */ 1229 if (status == USBD_CANCELLED) 1230 return; 1231 1232 if (status != USBD_NORMAL_COMPLETION) { 1233 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1234 sce->state |= UGEN_RA_WB_STOP; 1235 if (status == USBD_STALLED) 1236 usbd_clear_endpoint_stall_async(sce->pipeh); 1237 return; 1238 } 1239 1240 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1241 1242 /* Keep track of how much is in the buffer. */ 1243 sce->ra_wb_used -= count; 1244 1245 /* Update buffer pointers. */ 1246 sce->cur += count; 1247 if (sce->cur >= sce->limit) 1248 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1249 1250 /* Set up next request if necessary. */ 1251 if (sce->ra_wb_used > 0) { 1252 /* copy data from buffer */ 1253 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1254 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1255 n = min(count, sce->limit - sce->cur); 1256 memcpy(tbuf, sce->cur, n); 1257 tbuf += n; 1258 if (count - n > 0) 1259 memcpy(tbuf, sce->ibuf, count - n); 1260 1261 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1262 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1263 err = usbd_transfer(xfer); 1264 if (err != USBD_IN_PROGRESS) { 1265 printf("usbd_bulkwb_intr: error=%d\n", err); 1266 /* 1267 * The transfer has not been queued. Setting STOP 1268 * will make us try again at the next write. 1269 */ 1270 sce->state |= UGEN_RA_WB_STOP; 1271 } 1272 } 1273 else 1274 sce->state |= UGEN_RA_WB_STOP; 1275 1276 if (sce->state & UGEN_ASLP) { 1277 sce->state &= ~UGEN_ASLP; 1278 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1279 wakeup(sce); 1280 } 1281 selnotify(&sce->rsel, 0); 1282 } 1283 #endif 1284 1285 Static usbd_status 1286 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1287 { 1288 usbd_interface_handle iface; 1289 usb_endpoint_descriptor_t *ed; 1290 usbd_status err; 1291 struct ugen_endpoint *sce; 1292 u_int8_t niface, nendpt, endptno, endpt; 1293 int dir; 1294 1295 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1296 1297 err = usbd_interface_count(sc->sc_udev, &niface); 1298 if (err) 1299 return (err); 1300 if (ifaceidx < 0 || ifaceidx >= niface) 1301 return (USBD_INVAL); 1302 1303 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1304 if (err) 1305 return (err); 1306 err = usbd_endpoint_count(iface, &nendpt); 1307 if (err) 1308 return (err); 1309 /* XXX should only do this after setting new altno has succeeded */ 1310 for (endptno = 0; endptno < nendpt; endptno++) { 1311 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1312 endpt = ed->bEndpointAddress; 1313 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1314 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1315 sce->sc = 0; 1316 sce->edesc = 0; 1317 sce->iface = 0; 1318 } 1319 1320 /* change setting */ 1321 err = usbd_set_interface(iface, altno); 1322 if (err) 1323 return (err); 1324 1325 err = usbd_endpoint_count(iface, &nendpt); 1326 if (err) 1327 return (err); 1328 for (endptno = 0; endptno < nendpt; endptno++) { 1329 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1330 KASSERT(ed != NULL); 1331 endpt = ed->bEndpointAddress; 1332 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1333 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1334 sce->sc = sc; 1335 sce->edesc = ed; 1336 sce->iface = iface; 1337 } 1338 return (0); 1339 } 1340 1341 /* Retrieve a complete descriptor for a certain device and index. */ 1342 Static usb_config_descriptor_t * 1343 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1344 { 1345 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1346 int len; 1347 usbd_status err; 1348 1349 if (index == USB_CURRENT_CONFIG_INDEX) { 1350 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1351 len = UGETW(tdesc->wTotalLength); 1352 if (lenp) 1353 *lenp = len; 1354 cdesc = malloc(len, M_TEMP, M_WAITOK); 1355 memcpy(cdesc, tdesc, len); 1356 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1357 } else { 1358 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1359 if (err) 1360 return (0); 1361 len = UGETW(cdescr.wTotalLength); 1362 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1363 if (lenp) 1364 *lenp = len; 1365 cdesc = malloc(len, M_TEMP, M_WAITOK); 1366 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1367 if (err) { 1368 free(cdesc, M_TEMP); 1369 return (0); 1370 } 1371 } 1372 return (cdesc); 1373 } 1374 1375 Static int 1376 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1377 { 1378 usbd_interface_handle iface; 1379 usbd_status err; 1380 1381 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1382 if (err) 1383 return (-1); 1384 return (usbd_get_interface_altindex(iface)); 1385 } 1386 1387 Static int 1388 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1389 void *addr, int flag, struct lwp *l) 1390 { 1391 struct ugen_endpoint *sce; 1392 usbd_status err; 1393 usbd_interface_handle iface; 1394 struct usb_config_desc *cd; 1395 usb_config_descriptor_t *cdesc; 1396 struct usb_interface_desc *id; 1397 usb_interface_descriptor_t *idesc; 1398 struct usb_endpoint_desc *ed; 1399 usb_endpoint_descriptor_t *edesc; 1400 struct usb_alt_interface *ai; 1401 struct usb_string_desc *si; 1402 u_int8_t conf, alt; 1403 1404 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1405 if (sc->sc_dying) 1406 return (EIO); 1407 1408 switch (cmd) { 1409 case FIONBIO: 1410 /* All handled in the upper FS layer. */ 1411 return (0); 1412 case USB_SET_SHORT_XFER: 1413 if (endpt == USB_CONTROL_ENDPOINT) 1414 return (EINVAL); 1415 /* This flag only affects read */ 1416 sce = &sc->sc_endpoints[endpt][IN]; 1417 if (sce == NULL || sce->pipeh == NULL) 1418 return (EINVAL); 1419 if (*(int *)addr) 1420 sce->state |= UGEN_SHORT_OK; 1421 else 1422 sce->state &= ~UGEN_SHORT_OK; 1423 return (0); 1424 case USB_SET_TIMEOUT: 1425 sce = &sc->sc_endpoints[endpt][IN]; 1426 if (sce == NULL 1427 /* XXX this shouldn't happen, but the distinction between 1428 input and output pipes isn't clear enough. 1429 || sce->pipeh == NULL */ 1430 ) 1431 return (EINVAL); 1432 sce->timeout = *(int *)addr; 1433 return (0); 1434 case USB_SET_BULK_RA: 1435 #ifdef UGEN_BULK_RA_WB 1436 if (endpt == USB_CONTROL_ENDPOINT) 1437 return (EINVAL); 1438 sce = &sc->sc_endpoints[endpt][IN]; 1439 if (sce == NULL || sce->pipeh == NULL) 1440 return (EINVAL); 1441 edesc = sce->edesc; 1442 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1443 return (EINVAL); 1444 1445 if (*(int *)addr) { 1446 /* Only turn RA on if it's currently off. */ 1447 if (sce->state & UGEN_BULK_RA) 1448 return (0); 1449 1450 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1451 /* shouldn't happen */ 1452 return (EINVAL); 1453 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1454 if (sce->ra_wb_xfer == NULL) 1455 return (ENOMEM); 1456 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1457 /* 1458 * Set up a dmabuf because we reuse the xfer with 1459 * the same (max) request length like isoc. 1460 */ 1461 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1462 sce->ra_wb_xferlen) == 0) { 1463 usbd_free_xfer(sce->ra_wb_xfer); 1464 return (ENOMEM); 1465 } 1466 sce->ibuf = malloc(sce->ra_wb_bufsize, 1467 M_USBDEV, M_WAITOK); 1468 sce->fill = sce->cur = sce->ibuf; 1469 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1470 sce->ra_wb_used = 0; 1471 sce->state |= UGEN_BULK_RA; 1472 sce->state &= ~UGEN_RA_WB_STOP; 1473 /* Now start reading. */ 1474 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1475 NULL, 1476 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1477 USBD_NO_COPY, USBD_NO_TIMEOUT, 1478 ugen_bulkra_intr); 1479 err = usbd_transfer(sce->ra_wb_xfer); 1480 if (err != USBD_IN_PROGRESS) { 1481 sce->state &= ~UGEN_BULK_RA; 1482 free(sce->ibuf, M_USBDEV); 1483 sce->ibuf = NULL; 1484 usbd_free_xfer(sce->ra_wb_xfer); 1485 return (EIO); 1486 } 1487 } else { 1488 /* Only turn RA off if it's currently on. */ 1489 if (!(sce->state & UGEN_BULK_RA)) 1490 return (0); 1491 1492 sce->state &= ~UGEN_BULK_RA; 1493 usbd_abort_pipe(sce->pipeh); 1494 usbd_free_xfer(sce->ra_wb_xfer); 1495 /* 1496 * XXX Discard whatever's in the buffer, but we 1497 * should keep it around and drain the buffer 1498 * instead. 1499 */ 1500 free(sce->ibuf, M_USBDEV); 1501 sce->ibuf = NULL; 1502 } 1503 return (0); 1504 #else 1505 return (EOPNOTSUPP); 1506 #endif 1507 case USB_SET_BULK_WB: 1508 #ifdef UGEN_BULK_RA_WB 1509 if (endpt == USB_CONTROL_ENDPOINT) 1510 return (EINVAL); 1511 sce = &sc->sc_endpoints[endpt][OUT]; 1512 if (sce == NULL || sce->pipeh == NULL) 1513 return (EINVAL); 1514 edesc = sce->edesc; 1515 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1516 return (EINVAL); 1517 1518 if (*(int *)addr) { 1519 /* Only turn WB on if it's currently off. */ 1520 if (sce->state & UGEN_BULK_WB) 1521 return (0); 1522 1523 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1524 /* shouldn't happen */ 1525 return (EINVAL); 1526 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1527 if (sce->ra_wb_xfer == NULL) 1528 return (ENOMEM); 1529 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1530 /* 1531 * Set up a dmabuf because we reuse the xfer with 1532 * the same (max) request length like isoc. 1533 */ 1534 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1535 sce->ra_wb_xferlen) == 0) { 1536 usbd_free_xfer(sce->ra_wb_xfer); 1537 return (ENOMEM); 1538 } 1539 sce->ibuf = malloc(sce->ra_wb_bufsize, 1540 M_USBDEV, M_WAITOK); 1541 sce->fill = sce->cur = sce->ibuf; 1542 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1543 sce->ra_wb_used = 0; 1544 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1545 } else { 1546 /* Only turn WB off if it's currently on. */ 1547 if (!(sce->state & UGEN_BULK_WB)) 1548 return (0); 1549 1550 sce->state &= ~UGEN_BULK_WB; 1551 /* 1552 * XXX Discard whatever's in the buffer, but we 1553 * should keep it around and keep writing to 1554 * drain the buffer instead. 1555 */ 1556 usbd_abort_pipe(sce->pipeh); 1557 usbd_free_xfer(sce->ra_wb_xfer); 1558 free(sce->ibuf, M_USBDEV); 1559 sce->ibuf = NULL; 1560 } 1561 return (0); 1562 #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 uio.uio_vmspace = l->l_proc->p_vmspace; 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 uio.uio_vmspace = l->l_proc->p_vmspace; 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, void *addr, int flag, struct lwp *l) 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, l); 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, struct lwp *l) 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(l, &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(l, &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(l, &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(l, &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 (ENXIO); 2049 2050 switch (kn->kn_filter) { 2051 case EVFILT_READ: 2052 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2053 if (sce == NULL) 2054 return (EINVAL); 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 (EINVAL); 2079 } 2080 break; 2081 2082 case EVFILT_WRITE: 2083 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2084 if (sce == NULL) 2085 return (EINVAL); 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 (EINVAL); 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 (EINVAL); 2108 } 2109 break; 2110 2111 default: 2112 return (EINVAL); 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 Thu Sep 25 16:09:42 GMT 2025