ugen.c revision 1.97
1 /* $NetBSD: ugen.c,v 1.97 2008/03/01 14:16:51 rmind 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 1.97 2008/03/01 14:16:51 rmind 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 i, dir, 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 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 271 for (dir = OUT; dir <= IN; dir++) { 272 struct ugen_endpoint *sce; 273 274 sce = &sc->sc_endpoints[i][dir]; 275 selinit(&sce->rsel); 276 } 277 } 278 279 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 280 USBDEV(sc->sc_dev)); 281 282 if (!pmf_device_register(self, NULL, NULL)) 283 aprint_error_dev(self, "couldn't establish power handler\n"); 284 285 USB_ATTACH_SUCCESS_RETURN; 286 } 287 288 Static int 289 ugen_set_config(struct ugen_softc *sc, int configno) 290 { 291 usbd_device_handle dev = sc->sc_udev; 292 usbd_interface_handle iface; 293 usb_endpoint_descriptor_t *ed; 294 struct ugen_endpoint *sce; 295 u_int8_t niface, nendpt; 296 int ifaceno, endptno, endpt; 297 usbd_status err; 298 int dir; 299 300 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 301 USBDEVNAME(sc->sc_dev), configno, sc)); 302 303 /* 304 * We start at 1, not 0, because we don't care whether the 305 * control endpoint is open or not. It is always present. 306 */ 307 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 308 if (sc->sc_is_open[endptno]) { 309 DPRINTFN(1, 310 ("ugen_set_config: %s - endpoint %d is open\n", 311 USBDEVNAME(sc->sc_dev), endptno)); 312 return (USBD_IN_USE); 313 } 314 315 /* Avoid setting the current value. */ 316 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 317 err = usbd_set_config_no(dev, configno, 1); 318 if (err) 319 return (err); 320 } 321 322 err = usbd_interface_count(dev, &niface); 323 if (err) 324 return (err); 325 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 326 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 327 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 328 err = usbd_device2interface_handle(dev, ifaceno, &iface); 329 if (err) 330 return (err); 331 err = usbd_endpoint_count(iface, &nendpt); 332 if (err) 333 return (err); 334 for (endptno = 0; endptno < nendpt; endptno++) { 335 ed = usbd_interface2endpoint_descriptor(iface,endptno); 336 KASSERT(ed != NULL); 337 endpt = ed->bEndpointAddress; 338 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 339 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 340 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 341 "(%d,%d), sce=%p\n", 342 endptno, endpt, UE_GET_ADDR(endpt), 343 UE_GET_DIR(endpt), sce)); 344 sce->sc = sc; 345 sce->edesc = ed; 346 sce->iface = iface; 347 } 348 } 349 return (USBD_NORMAL_COMPLETION); 350 } 351 352 int 353 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 354 { 355 struct ugen_softc *sc; 356 int unit = UGENUNIT(dev); 357 int endpt = UGENENDPOINT(dev); 358 usb_endpoint_descriptor_t *edesc; 359 struct ugen_endpoint *sce; 360 int dir, isize; 361 usbd_status err; 362 usbd_xfer_handle xfer; 363 void *tbuf; 364 int i, j; 365 366 USB_GET_SC_OPEN(ugen, unit, sc); 367 368 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 369 flag, mode, unit, endpt)); 370 371 if (sc == NULL || sc->sc_dying) 372 return (ENXIO); 373 374 /* The control endpoint allows multiple opens. */ 375 if (endpt == USB_CONTROL_ENDPOINT) { 376 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 377 return (0); 378 } 379 380 if (sc->sc_is_open[endpt]) 381 return (EBUSY); 382 383 /* Make sure there are pipes for all directions. */ 384 for (dir = OUT; dir <= IN; dir++) { 385 if (flag & (dir == OUT ? FWRITE : FREAD)) { 386 sce = &sc->sc_endpoints[endpt][dir]; 387 if (sce == 0 || sce->edesc == 0) 388 return (ENXIO); 389 } 390 } 391 392 /* Actually open the pipes. */ 393 /* XXX Should back out properly if it fails. */ 394 for (dir = OUT; dir <= IN; dir++) { 395 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 396 continue; 397 sce = &sc->sc_endpoints[endpt][dir]; 398 sce->state = 0; 399 sce->timeout = USBD_NO_TIMEOUT; 400 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 401 sc, endpt, dir, sce)); 402 edesc = sce->edesc; 403 switch (edesc->bmAttributes & UE_XFERTYPE) { 404 case UE_INTERRUPT: 405 if (dir == OUT) { 406 err = usbd_open_pipe(sce->iface, 407 edesc->bEndpointAddress, 0, &sce->pipeh); 408 if (err) 409 return (EIO); 410 break; 411 } 412 isize = UGETW(edesc->wMaxPacketSize); 413 if (isize == 0) /* shouldn't happen */ 414 return (EINVAL); 415 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 416 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 417 endpt, isize)); 418 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 419 return (ENOMEM); 420 err = usbd_open_pipe_intr(sce->iface, 421 edesc->bEndpointAddress, 422 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 423 sce->ibuf, isize, ugenintr, 424 USBD_DEFAULT_INTERVAL); 425 if (err) { 426 free(sce->ibuf, M_USBDEV); 427 clfree(&sce->q); 428 return (EIO); 429 } 430 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 431 break; 432 case UE_BULK: 433 err = usbd_open_pipe(sce->iface, 434 edesc->bEndpointAddress, 0, &sce->pipeh); 435 if (err) 436 return (EIO); 437 #ifdef UGEN_BULK_RA_WB 438 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 439 /* 440 * Use request size for non-RA/WB transfers 441 * as the default. 442 */ 443 sce->ra_wb_reqsize = UGEN_BBSIZE; 444 #endif 445 break; 446 case UE_ISOCHRONOUS: 447 if (dir == OUT) 448 return (EINVAL); 449 isize = UGETW(edesc->wMaxPacketSize); 450 if (isize == 0) /* shouldn't happen */ 451 return (EINVAL); 452 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 453 M_USBDEV, M_WAITOK); 454 sce->cur = sce->fill = sce->ibuf; 455 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 456 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 457 endpt, isize)); 458 err = usbd_open_pipe(sce->iface, 459 edesc->bEndpointAddress, 0, &sce->pipeh); 460 if (err) { 461 free(sce->ibuf, M_USBDEV); 462 return (EIO); 463 } 464 for(i = 0; i < UGEN_NISOREQS; ++i) { 465 sce->isoreqs[i].sce = sce; 466 xfer = usbd_alloc_xfer(sc->sc_udev); 467 if (xfer == 0) 468 goto bad; 469 sce->isoreqs[i].xfer = xfer; 470 tbuf = usbd_alloc_buffer 471 (xfer, isize * UGEN_NISORFRMS); 472 if (tbuf == 0) { 473 i++; 474 goto bad; 475 } 476 sce->isoreqs[i].dmabuf = tbuf; 477 for(j = 0; j < UGEN_NISORFRMS; ++j) 478 sce->isoreqs[i].sizes[j] = isize; 479 usbd_setup_isoc_xfer 480 (xfer, sce->pipeh, &sce->isoreqs[i], 481 sce->isoreqs[i].sizes, 482 UGEN_NISORFRMS, USBD_NO_COPY, 483 ugen_isoc_rintr); 484 (void)usbd_transfer(xfer); 485 } 486 DPRINTFN(5, ("ugenopen: isoc open done\n")); 487 break; 488 bad: 489 while (--i >= 0) /* implicit buffer free */ 490 usbd_free_xfer(sce->isoreqs[i].xfer); 491 return (ENOMEM); 492 case UE_CONTROL: 493 sce->timeout = USBD_DEFAULT_TIMEOUT; 494 return (EINVAL); 495 } 496 } 497 sc->sc_is_open[endpt] = 1; 498 return (0); 499 } 500 501 int 502 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 503 { 504 int endpt = UGENENDPOINT(dev); 505 struct ugen_softc *sc; 506 struct ugen_endpoint *sce; 507 int dir; 508 int i; 509 510 USB_GET_SC(ugen, UGENUNIT(dev), sc); 511 512 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 513 flag, mode, UGENUNIT(dev), endpt)); 514 515 #ifdef DIAGNOSTIC 516 if (!sc->sc_is_open[endpt]) { 517 printf("ugenclose: not open\n"); 518 return (EINVAL); 519 } 520 #endif 521 522 if (endpt == USB_CONTROL_ENDPOINT) { 523 DPRINTFN(5, ("ugenclose: close control\n")); 524 sc->sc_is_open[endpt] = 0; 525 return (0); 526 } 527 528 for (dir = OUT; dir <= IN; dir++) { 529 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 530 continue; 531 sce = &sc->sc_endpoints[endpt][dir]; 532 if (sce == NULL || sce->pipeh == NULL) 533 continue; 534 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 535 endpt, dir, sce)); 536 537 usbd_abort_pipe(sce->pipeh); 538 usbd_close_pipe(sce->pipeh); 539 sce->pipeh = NULL; 540 541 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 542 case UE_INTERRUPT: 543 ndflush(&sce->q, sce->q.c_cc); 544 clfree(&sce->q); 545 break; 546 case UE_ISOCHRONOUS: 547 for (i = 0; i < UGEN_NISOREQS; ++i) 548 usbd_free_xfer(sce->isoreqs[i].xfer); 549 break; 550 #ifdef UGEN_BULK_RA_WB 551 case UE_BULK: 552 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 553 /* ibuf freed below */ 554 usbd_free_xfer(sce->ra_wb_xfer); 555 break; 556 #endif 557 default: 558 break; 559 } 560 561 if (sce->ibuf != NULL) { 562 free(sce->ibuf, M_USBDEV); 563 sce->ibuf = NULL; 564 clfree(&sce->q); 565 } 566 } 567 sc->sc_is_open[endpt] = 0; 568 569 return (0); 570 } 571 572 Static int 573 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 574 { 575 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 576 u_int32_t n, tn; 577 usbd_xfer_handle xfer; 578 usbd_status err; 579 int s; 580 int error = 0; 581 582 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 583 584 if (sc->sc_dying) 585 return (EIO); 586 587 if (endpt == USB_CONTROL_ENDPOINT) 588 return (ENODEV); 589 590 #ifdef DIAGNOSTIC 591 if (sce->edesc == NULL) { 592 printf("ugenread: no edesc\n"); 593 return (EIO); 594 } 595 if (sce->pipeh == NULL) { 596 printf("ugenread: no pipe\n"); 597 return (EIO); 598 } 599 #endif 600 601 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 602 case UE_INTERRUPT: 603 /* Block until activity occurred. */ 604 s = splusb(); 605 while (sce->q.c_cc == 0) { 606 if (flag & IO_NDELAY) { 607 splx(s); 608 return (EWOULDBLOCK); 609 } 610 sce->state |= UGEN_ASLP; 611 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 612 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 613 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 614 if (sc->sc_dying) 615 error = EIO; 616 if (error) { 617 sce->state &= ~UGEN_ASLP; 618 break; 619 } 620 } 621 splx(s); 622 623 /* Transfer as many chunks as possible. */ 624 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 625 n = min(sce->q.c_cc, uio->uio_resid); 626 if (n > sizeof(sc->sc_buffer)) 627 n = sizeof(sc->sc_buffer); 628 629 /* Remove a small chunk from the input queue. */ 630 q_to_b(&sce->q, sc->sc_buffer, n); 631 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 632 633 /* Copy the data to the user process. */ 634 error = uiomove(sc->sc_buffer, n, uio); 635 if (error) 636 break; 637 } 638 break; 639 case UE_BULK: 640 #ifdef UGEN_BULK_RA_WB 641 if (sce->state & UGEN_BULK_RA) { 642 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 643 uio->uio_resid, sce->ra_wb_used)); 644 xfer = sce->ra_wb_xfer; 645 646 s = splusb(); 647 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 648 splx(s); 649 return (EWOULDBLOCK); 650 } 651 while (uio->uio_resid > 0 && !error) { 652 while (sce->ra_wb_used == 0) { 653 sce->state |= UGEN_ASLP; 654 DPRINTFN(5, 655 ("ugenread: sleep on %p\n", 656 sce)); 657 error = tsleep(sce, PZERO | PCATCH, 658 "ugenrb", 0); 659 DPRINTFN(5, 660 ("ugenread: woke, error=%d\n", 661 error)); 662 if (sc->sc_dying) 663 error = EIO; 664 if (error) { 665 sce->state &= ~UGEN_ASLP; 666 break; 667 } 668 } 669 670 /* Copy data to the process. */ 671 while (uio->uio_resid > 0 672 && sce->ra_wb_used > 0) { 673 n = min(uio->uio_resid, 674 sce->ra_wb_used); 675 n = min(n, sce->limit - sce->cur); 676 error = uiomove(sce->cur, n, uio); 677 if (error) 678 break; 679 sce->cur += n; 680 sce->ra_wb_used -= n; 681 if (sce->cur == sce->limit) 682 sce->cur = sce->ibuf; 683 } 684 685 /* 686 * If the transfers stopped because the 687 * buffer was full, restart them. 688 */ 689 if (sce->state & UGEN_RA_WB_STOP && 690 sce->ra_wb_used < sce->limit - sce->ibuf) { 691 n = (sce->limit - sce->ibuf) 692 - sce->ra_wb_used; 693 usbd_setup_xfer(xfer, 694 sce->pipeh, sce, NULL, 695 min(n, sce->ra_wb_xferlen), 696 USBD_NO_COPY, USBD_NO_TIMEOUT, 697 ugen_bulkra_intr); 698 sce->state &= ~UGEN_RA_WB_STOP; 699 err = usbd_transfer(xfer); 700 if (err != USBD_IN_PROGRESS) 701 /* 702 * The transfer has not been 703 * queued. Setting STOP 704 * will make us try 705 * again at the next read. 706 */ 707 sce->state |= UGEN_RA_WB_STOP; 708 } 709 } 710 splx(s); 711 break; 712 } 713 #endif 714 xfer = usbd_alloc_xfer(sc->sc_udev); 715 if (xfer == 0) 716 return (ENOMEM); 717 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 718 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 719 tn = n; 720 err = usbd_bulk_transfer( 721 xfer, sce->pipeh, 722 sce->state & UGEN_SHORT_OK ? 723 USBD_SHORT_XFER_OK : 0, 724 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 725 if (err) { 726 if (err == USBD_INTERRUPTED) 727 error = EINTR; 728 else if (err == USBD_TIMEOUT) 729 error = ETIMEDOUT; 730 else 731 error = EIO; 732 break; 733 } 734 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 735 error = uiomove(sc->sc_buffer, tn, uio); 736 if (error || tn < n) 737 break; 738 } 739 usbd_free_xfer(xfer); 740 break; 741 case UE_ISOCHRONOUS: 742 s = splusb(); 743 while (sce->cur == sce->fill) { 744 if (flag & IO_NDELAY) { 745 splx(s); 746 return (EWOULDBLOCK); 747 } 748 sce->state |= UGEN_ASLP; 749 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 750 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 751 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 752 if (sc->sc_dying) 753 error = EIO; 754 if (error) { 755 sce->state &= ~UGEN_ASLP; 756 break; 757 } 758 } 759 760 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 761 if(sce->fill > sce->cur) 762 n = min(sce->fill - sce->cur, uio->uio_resid); 763 else 764 n = min(sce->limit - sce->cur, uio->uio_resid); 765 766 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 767 768 /* Copy the data to the user process. */ 769 error = uiomove(sce->cur, n, uio); 770 if (error) 771 break; 772 sce->cur += n; 773 if(sce->cur >= sce->limit) 774 sce->cur = sce->ibuf; 775 } 776 splx(s); 777 break; 778 779 780 default: 781 return (ENXIO); 782 } 783 return (error); 784 } 785 786 int 787 ugenread(dev_t dev, struct uio *uio, int flag) 788 { 789 int endpt = UGENENDPOINT(dev); 790 struct ugen_softc *sc; 791 int error; 792 793 USB_GET_SC(ugen, UGENUNIT(dev), sc); 794 795 sc->sc_refcnt++; 796 error = ugen_do_read(sc, endpt, uio, flag); 797 if (--sc->sc_refcnt < 0) 798 usb_detach_wakeup(USBDEV(sc->sc_dev)); 799 return (error); 800 } 801 802 Static int 803 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 804 int flag) 805 { 806 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 807 u_int32_t n; 808 int error = 0; 809 #ifdef UGEN_BULK_RA_WB 810 int s; 811 u_int32_t tn; 812 char *dbuf; 813 #endif 814 usbd_xfer_handle xfer; 815 usbd_status err; 816 817 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 818 819 if (sc->sc_dying) 820 return (EIO); 821 822 if (endpt == USB_CONTROL_ENDPOINT) 823 return (ENODEV); 824 825 #ifdef DIAGNOSTIC 826 if (sce->edesc == NULL) { 827 printf("ugenwrite: no edesc\n"); 828 return (EIO); 829 } 830 if (sce->pipeh == NULL) { 831 printf("ugenwrite: no pipe\n"); 832 return (EIO); 833 } 834 #endif 835 836 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 837 case UE_BULK: 838 #ifdef UGEN_BULK_RA_WB 839 if (sce->state & UGEN_BULK_WB) { 840 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 841 uio->uio_resid, sce->ra_wb_used)); 842 xfer = sce->ra_wb_xfer; 843 844 s = splusb(); 845 if (sce->ra_wb_used == sce->limit - sce->ibuf && 846 flag & IO_NDELAY) { 847 splx(s); 848 return (EWOULDBLOCK); 849 } 850 while (uio->uio_resid > 0 && !error) { 851 while (sce->ra_wb_used == 852 sce->limit - sce->ibuf) { 853 sce->state |= UGEN_ASLP; 854 DPRINTFN(5, 855 ("ugenwrite: sleep on %p\n", 856 sce)); 857 error = tsleep(sce, PZERO | PCATCH, 858 "ugenwb", 0); 859 DPRINTFN(5, 860 ("ugenwrite: woke, error=%d\n", 861 error)); 862 if (sc->sc_dying) 863 error = EIO; 864 if (error) { 865 sce->state &= ~UGEN_ASLP; 866 break; 867 } 868 } 869 870 /* Copy data from the process. */ 871 while (uio->uio_resid > 0 && 872 sce->ra_wb_used < sce->limit - sce->ibuf) { 873 n = min(uio->uio_resid, 874 (sce->limit - sce->ibuf) 875 - sce->ra_wb_used); 876 n = min(n, sce->limit - sce->fill); 877 error = uiomove(sce->fill, n, uio); 878 if (error) 879 break; 880 sce->fill += n; 881 sce->ra_wb_used += n; 882 if (sce->fill == sce->limit) 883 sce->fill = sce->ibuf; 884 } 885 886 /* 887 * If the transfers stopped because the 888 * buffer was empty, restart them. 889 */ 890 if (sce->state & UGEN_RA_WB_STOP && 891 sce->ra_wb_used > 0) { 892 dbuf = (char *)usbd_get_buffer(xfer); 893 n = min(sce->ra_wb_used, 894 sce->ra_wb_xferlen); 895 tn = min(n, sce->limit - sce->cur); 896 memcpy(dbuf, sce->cur, tn); 897 dbuf += tn; 898 if (n - tn > 0) 899 memcpy(dbuf, sce->ibuf, 900 n - tn); 901 usbd_setup_xfer(xfer, 902 sce->pipeh, sce, NULL, n, 903 USBD_NO_COPY, USBD_NO_TIMEOUT, 904 ugen_bulkwb_intr); 905 sce->state &= ~UGEN_RA_WB_STOP; 906 err = usbd_transfer(xfer); 907 if (err != USBD_IN_PROGRESS) 908 /* 909 * The transfer has not been 910 * queued. Setting STOP 911 * will make us try again 912 * at the next read. 913 */ 914 sce->state |= UGEN_RA_WB_STOP; 915 } 916 } 917 splx(s); 918 break; 919 } 920 #endif 921 xfer = usbd_alloc_xfer(sc->sc_udev); 922 if (xfer == 0) 923 return (EIO); 924 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 925 error = uiomove(sc->sc_buffer, n, uio); 926 if (error) 927 break; 928 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 929 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 930 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 931 if (err) { 932 if (err == USBD_INTERRUPTED) 933 error = EINTR; 934 else if (err == USBD_TIMEOUT) 935 error = ETIMEDOUT; 936 else 937 error = EIO; 938 break; 939 } 940 } 941 usbd_free_xfer(xfer); 942 break; 943 case UE_INTERRUPT: 944 xfer = usbd_alloc_xfer(sc->sc_udev); 945 if (xfer == 0) 946 return (EIO); 947 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 948 uio->uio_resid)) != 0) { 949 error = uiomove(sc->sc_buffer, n, uio); 950 if (error) 951 break; 952 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 953 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 954 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 955 if (err) { 956 if (err == USBD_INTERRUPTED) 957 error = EINTR; 958 else if (err == USBD_TIMEOUT) 959 error = ETIMEDOUT; 960 else 961 error = EIO; 962 break; 963 } 964 } 965 usbd_free_xfer(xfer); 966 break; 967 default: 968 return (ENXIO); 969 } 970 return (error); 971 } 972 973 int 974 ugenwrite(dev_t dev, struct uio *uio, int flag) 975 { 976 int endpt = UGENENDPOINT(dev); 977 struct ugen_softc *sc; 978 int error; 979 980 USB_GET_SC(ugen, UGENUNIT(dev), sc); 981 982 sc->sc_refcnt++; 983 error = ugen_do_write(sc, endpt, uio, flag); 984 if (--sc->sc_refcnt < 0) 985 usb_detach_wakeup(USBDEV(sc->sc_dev)); 986 return (error); 987 } 988 989 #if defined(__NetBSD__) || defined(__OpenBSD__) 990 int 991 ugen_activate(device_ptr_t self, enum devact act) 992 { 993 struct ugen_softc *sc = (struct ugen_softc *)self; 994 995 switch (act) { 996 case DVACT_ACTIVATE: 997 return (EOPNOTSUPP); 998 999 case DVACT_DEACTIVATE: 1000 sc->sc_dying = 1; 1001 break; 1002 } 1003 return (0); 1004 } 1005 #endif 1006 1007 USB_DETACH(ugen) 1008 { 1009 USB_DETACH_START(ugen, sc); 1010 struct ugen_endpoint *sce; 1011 int i, dir; 1012 int s; 1013 #if defined(__NetBSD__) || defined(__OpenBSD__) 1014 int maj, mn; 1015 1016 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1017 #elif defined(__FreeBSD__) 1018 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1019 #endif 1020 1021 sc->sc_dying = 1; 1022 pmf_device_deregister(self); 1023 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1024 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1025 for (dir = OUT; dir <= IN; dir++) { 1026 sce = &sc->sc_endpoints[i][dir]; 1027 if (sce && sce->pipeh) 1028 usbd_abort_pipe(sce->pipeh); 1029 } 1030 } 1031 1032 s = splusb(); 1033 if (--sc->sc_refcnt >= 0) { 1034 /* Wake everyone */ 1035 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1036 wakeup(&sc->sc_endpoints[i][IN]); 1037 /* Wait for processes to go away. */ 1038 usb_detach_wait(USBDEV(sc->sc_dev)); 1039 } 1040 splx(s); 1041 1042 #if defined(__NetBSD__) || defined(__OpenBSD__) 1043 /* locate the major number */ 1044 #if defined(__NetBSD__) 1045 maj = cdevsw_lookup_major(&ugen_cdevsw); 1046 #elif defined(__OpenBSD__) 1047 for (maj = 0; maj < nchrdev; maj++) 1048 if (cdevsw[maj].d_open == ugenopen) 1049 break; 1050 #endif 1051 1052 /* Nuke the vnodes for any open instances (calls close). */ 1053 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1054 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1055 #elif defined(__FreeBSD__) 1056 /* XXX not implemented yet */ 1057 #endif 1058 1059 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1060 USBDEV(sc->sc_dev)); 1061 1062 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1063 for (dir = OUT; dir <= IN; dir++) { 1064 sce = &sc->sc_endpoints[i][dir]; 1065 seldestroy(&sce->rsel); 1066 } 1067 } 1068 1069 return (0); 1070 } 1071 1072 Static void 1073 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1074 { 1075 struct ugen_endpoint *sce = addr; 1076 /*struct ugen_softc *sc = sce->sc;*/ 1077 u_int32_t count; 1078 u_char *ibuf; 1079 1080 if (status == USBD_CANCELLED) 1081 return; 1082 1083 if (status != USBD_NORMAL_COMPLETION) { 1084 DPRINTF(("ugenintr: status=%d\n", status)); 1085 if (status == USBD_STALLED) 1086 usbd_clear_endpoint_stall_async(sce->pipeh); 1087 return; 1088 } 1089 1090 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1091 ibuf = sce->ibuf; 1092 1093 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1094 xfer, status, count)); 1095 DPRINTFN(5, (" data = %02x %02x %02x\n", 1096 ibuf[0], ibuf[1], ibuf[2])); 1097 1098 (void)b_to_q(ibuf, count, &sce->q); 1099 1100 if (sce->state & UGEN_ASLP) { 1101 sce->state &= ~UGEN_ASLP; 1102 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1103 wakeup(sce); 1104 } 1105 selnotify(&sce->rsel, 0, 0); 1106 } 1107 1108 Static void 1109 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1110 usbd_status status) 1111 { 1112 struct isoreq *req = addr; 1113 struct ugen_endpoint *sce = req->sce; 1114 u_int32_t count, n; 1115 int i, isize; 1116 1117 /* Return if we are aborting. */ 1118 if (status == USBD_CANCELLED) 1119 return; 1120 1121 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1122 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1123 (long)(req - sce->isoreqs), count)); 1124 1125 /* throw away oldest input if the buffer is full */ 1126 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1127 sce->cur += count; 1128 if(sce->cur >= sce->limit) 1129 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1130 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1131 count)); 1132 } 1133 1134 isize = UGETW(sce->edesc->wMaxPacketSize); 1135 for (i = 0; i < UGEN_NISORFRMS; i++) { 1136 u_int32_t actlen = req->sizes[i]; 1137 char const *tbuf = (char const *)req->dmabuf + isize * i; 1138 1139 /* copy data to buffer */ 1140 while (actlen > 0) { 1141 n = min(actlen, sce->limit - sce->fill); 1142 memcpy(sce->fill, tbuf, n); 1143 1144 tbuf += n; 1145 actlen -= n; 1146 sce->fill += n; 1147 if(sce->fill == sce->limit) 1148 sce->fill = sce->ibuf; 1149 } 1150 1151 /* setup size for next transfer */ 1152 req->sizes[i] = isize; 1153 } 1154 1155 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1156 USBD_NO_COPY, ugen_isoc_rintr); 1157 (void)usbd_transfer(xfer); 1158 1159 if (sce->state & UGEN_ASLP) { 1160 sce->state &= ~UGEN_ASLP; 1161 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1162 wakeup(sce); 1163 } 1164 selnotify(&sce->rsel, 0, 0); 1165 } 1166 1167 #ifdef UGEN_BULK_RA_WB 1168 Static void 1169 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1170 usbd_status status) 1171 { 1172 struct ugen_endpoint *sce = addr; 1173 u_int32_t count, n; 1174 char const *tbuf; 1175 usbd_status err; 1176 1177 /* Return if we are aborting. */ 1178 if (status == USBD_CANCELLED) 1179 return; 1180 1181 if (status != USBD_NORMAL_COMPLETION) { 1182 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1183 sce->state |= UGEN_RA_WB_STOP; 1184 if (status == USBD_STALLED) 1185 usbd_clear_endpoint_stall_async(sce->pipeh); 1186 return; 1187 } 1188 1189 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1190 1191 /* Keep track of how much is in the buffer. */ 1192 sce->ra_wb_used += count; 1193 1194 /* Copy data to buffer. */ 1195 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1196 n = min(count, sce->limit - sce->fill); 1197 memcpy(sce->fill, tbuf, n); 1198 tbuf += n; 1199 count -= n; 1200 sce->fill += n; 1201 if (sce->fill == sce->limit) 1202 sce->fill = sce->ibuf; 1203 if (count > 0) { 1204 memcpy(sce->fill, tbuf, count); 1205 sce->fill += count; 1206 } 1207 1208 /* Set up the next request if necessary. */ 1209 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1210 if (n > 0) { 1211 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1212 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1213 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1214 err = usbd_transfer(xfer); 1215 if (err != USBD_IN_PROGRESS) { 1216 printf("usbd_bulkra_intr: error=%d\n", err); 1217 /* 1218 * The transfer has not been queued. Setting STOP 1219 * will make us try again at the next read. 1220 */ 1221 sce->state |= UGEN_RA_WB_STOP; 1222 } 1223 } 1224 else 1225 sce->state |= UGEN_RA_WB_STOP; 1226 1227 if (sce->state & UGEN_ASLP) { 1228 sce->state &= ~UGEN_ASLP; 1229 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1230 wakeup(sce); 1231 } 1232 selnotify(&sce->rsel, 0, 0); 1233 } 1234 1235 Static void 1236 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1237 usbd_status status) 1238 { 1239 struct ugen_endpoint *sce = addr; 1240 u_int32_t count, n; 1241 char *tbuf; 1242 usbd_status err; 1243 1244 /* Return if we are aborting. */ 1245 if (status == USBD_CANCELLED) 1246 return; 1247 1248 if (status != USBD_NORMAL_COMPLETION) { 1249 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1250 sce->state |= UGEN_RA_WB_STOP; 1251 if (status == USBD_STALLED) 1252 usbd_clear_endpoint_stall_async(sce->pipeh); 1253 return; 1254 } 1255 1256 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1257 1258 /* Keep track of how much is in the buffer. */ 1259 sce->ra_wb_used -= count; 1260 1261 /* Update buffer pointers. */ 1262 sce->cur += count; 1263 if (sce->cur >= sce->limit) 1264 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1265 1266 /* Set up next request if necessary. */ 1267 if (sce->ra_wb_used > 0) { 1268 /* copy data from buffer */ 1269 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1270 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1271 n = min(count, sce->limit - sce->cur); 1272 memcpy(tbuf, sce->cur, n); 1273 tbuf += n; 1274 if (count - n > 0) 1275 memcpy(tbuf, sce->ibuf, count - n); 1276 1277 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1278 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1279 err = usbd_transfer(xfer); 1280 if (err != USBD_IN_PROGRESS) { 1281 printf("usbd_bulkwb_intr: error=%d\n", err); 1282 /* 1283 * The transfer has not been queued. Setting STOP 1284 * will make us try again at the next write. 1285 */ 1286 sce->state |= UGEN_RA_WB_STOP; 1287 } 1288 } 1289 else 1290 sce->state |= UGEN_RA_WB_STOP; 1291 1292 if (sce->state & UGEN_ASLP) { 1293 sce->state &= ~UGEN_ASLP; 1294 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1295 wakeup(sce); 1296 } 1297 selnotify(&sce->rsel, 0, 0); 1298 } 1299 #endif 1300 1301 Static usbd_status 1302 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1303 { 1304 usbd_interface_handle iface; 1305 usb_endpoint_descriptor_t *ed; 1306 usbd_status err; 1307 struct ugen_endpoint *sce; 1308 u_int8_t niface, nendpt, endptno, endpt; 1309 int dir; 1310 1311 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1312 1313 err = usbd_interface_count(sc->sc_udev, &niface); 1314 if (err) 1315 return (err); 1316 if (ifaceidx < 0 || ifaceidx >= niface) 1317 return (USBD_INVAL); 1318 1319 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1320 if (err) 1321 return (err); 1322 err = usbd_endpoint_count(iface, &nendpt); 1323 if (err) 1324 return (err); 1325 /* XXX should only do this after setting new altno has succeeded */ 1326 for (endptno = 0; endptno < nendpt; endptno++) { 1327 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1328 endpt = ed->bEndpointAddress; 1329 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1330 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1331 sce->sc = 0; 1332 sce->edesc = 0; 1333 sce->iface = 0; 1334 } 1335 1336 /* change setting */ 1337 err = usbd_set_interface(iface, altno); 1338 if (err) 1339 return (err); 1340 1341 err = usbd_endpoint_count(iface, &nendpt); 1342 if (err) 1343 return (err); 1344 for (endptno = 0; endptno < nendpt; endptno++) { 1345 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1346 KASSERT(ed != NULL); 1347 endpt = ed->bEndpointAddress; 1348 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1349 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1350 sce->sc = sc; 1351 sce->edesc = ed; 1352 sce->iface = iface; 1353 } 1354 return (0); 1355 } 1356 1357 /* Retrieve a complete descriptor for a certain device and index. */ 1358 Static usb_config_descriptor_t * 1359 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1360 { 1361 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1362 int len; 1363 usbd_status err; 1364 1365 if (index == USB_CURRENT_CONFIG_INDEX) { 1366 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1367 len = UGETW(tdesc->wTotalLength); 1368 if (lenp) 1369 *lenp = len; 1370 cdesc = malloc(len, M_TEMP, M_WAITOK); 1371 memcpy(cdesc, tdesc, len); 1372 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1373 } else { 1374 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1375 if (err) 1376 return (0); 1377 len = UGETW(cdescr.wTotalLength); 1378 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1379 if (lenp) 1380 *lenp = len; 1381 cdesc = malloc(len, M_TEMP, M_WAITOK); 1382 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1383 if (err) { 1384 free(cdesc, M_TEMP); 1385 return (0); 1386 } 1387 } 1388 return (cdesc); 1389 } 1390 1391 Static int 1392 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1393 { 1394 usbd_interface_handle iface; 1395 usbd_status err; 1396 1397 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1398 if (err) 1399 return (-1); 1400 return (usbd_get_interface_altindex(iface)); 1401 } 1402 1403 Static int 1404 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1405 void *addr, int flag, struct lwp *l) 1406 { 1407 struct ugen_endpoint *sce; 1408 usbd_status err; 1409 usbd_interface_handle iface; 1410 struct usb_config_desc *cd; 1411 usb_config_descriptor_t *cdesc; 1412 struct usb_interface_desc *id; 1413 usb_interface_descriptor_t *idesc; 1414 struct usb_endpoint_desc *ed; 1415 usb_endpoint_descriptor_t *edesc; 1416 struct usb_alt_interface *ai; 1417 struct usb_string_desc *si; 1418 u_int8_t conf, alt; 1419 1420 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1421 if (sc->sc_dying) 1422 return (EIO); 1423 1424 switch (cmd) { 1425 case FIONBIO: 1426 /* All handled in the upper FS layer. */ 1427 return (0); 1428 case USB_SET_SHORT_XFER: 1429 if (endpt == USB_CONTROL_ENDPOINT) 1430 return (EINVAL); 1431 /* This flag only affects read */ 1432 sce = &sc->sc_endpoints[endpt][IN]; 1433 if (sce == NULL || sce->pipeh == NULL) 1434 return (EINVAL); 1435 if (*(int *)addr) 1436 sce->state |= UGEN_SHORT_OK; 1437 else 1438 sce->state &= ~UGEN_SHORT_OK; 1439 return (0); 1440 case USB_SET_TIMEOUT: 1441 sce = &sc->sc_endpoints[endpt][IN]; 1442 if (sce == NULL 1443 /* XXX this shouldn't happen, but the distinction between 1444 input and output pipes isn't clear enough. 1445 || sce->pipeh == NULL */ 1446 ) 1447 return (EINVAL); 1448 sce->timeout = *(int *)addr; 1449 return (0); 1450 case USB_SET_BULK_RA: 1451 #ifdef UGEN_BULK_RA_WB 1452 if (endpt == USB_CONTROL_ENDPOINT) 1453 return (EINVAL); 1454 sce = &sc->sc_endpoints[endpt][IN]; 1455 if (sce == NULL || sce->pipeh == NULL) 1456 return (EINVAL); 1457 edesc = sce->edesc; 1458 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1459 return (EINVAL); 1460 1461 if (*(int *)addr) { 1462 /* Only turn RA on if it's currently off. */ 1463 if (sce->state & UGEN_BULK_RA) 1464 return (0); 1465 1466 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1467 /* shouldn't happen */ 1468 return (EINVAL); 1469 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1470 if (sce->ra_wb_xfer == NULL) 1471 return (ENOMEM); 1472 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1473 /* 1474 * Set up a dmabuf because we reuse the xfer with 1475 * the same (max) request length like isoc. 1476 */ 1477 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1478 sce->ra_wb_xferlen) == 0) { 1479 usbd_free_xfer(sce->ra_wb_xfer); 1480 return (ENOMEM); 1481 } 1482 sce->ibuf = malloc(sce->ra_wb_bufsize, 1483 M_USBDEV, M_WAITOK); 1484 sce->fill = sce->cur = sce->ibuf; 1485 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1486 sce->ra_wb_used = 0; 1487 sce->state |= UGEN_BULK_RA; 1488 sce->state &= ~UGEN_RA_WB_STOP; 1489 /* Now start reading. */ 1490 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1491 NULL, 1492 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1493 USBD_NO_COPY, USBD_NO_TIMEOUT, 1494 ugen_bulkra_intr); 1495 err = usbd_transfer(sce->ra_wb_xfer); 1496 if (err != USBD_IN_PROGRESS) { 1497 sce->state &= ~UGEN_BULK_RA; 1498 free(sce->ibuf, M_USBDEV); 1499 sce->ibuf = NULL; 1500 usbd_free_xfer(sce->ra_wb_xfer); 1501 return (EIO); 1502 } 1503 } else { 1504 /* Only turn RA off if it's currently on. */ 1505 if (!(sce->state & UGEN_BULK_RA)) 1506 return (0); 1507 1508 sce->state &= ~UGEN_BULK_RA; 1509 usbd_abort_pipe(sce->pipeh); 1510 usbd_free_xfer(sce->ra_wb_xfer); 1511 /* 1512 * XXX Discard whatever's in the buffer, but we 1513 * should keep it around and drain the buffer 1514 * instead. 1515 */ 1516 free(sce->ibuf, M_USBDEV); 1517 sce->ibuf = NULL; 1518 } 1519 return (0); 1520 #else 1521 return (EOPNOTSUPP); 1522 #endif 1523 case USB_SET_BULK_WB: 1524 #ifdef UGEN_BULK_RA_WB 1525 if (endpt == USB_CONTROL_ENDPOINT) 1526 return (EINVAL); 1527 sce = &sc->sc_endpoints[endpt][OUT]; 1528 if (sce == NULL || sce->pipeh == NULL) 1529 return (EINVAL); 1530 edesc = sce->edesc; 1531 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1532 return (EINVAL); 1533 1534 if (*(int *)addr) { 1535 /* Only turn WB on if it's currently off. */ 1536 if (sce->state & UGEN_BULK_WB) 1537 return (0); 1538 1539 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1540 /* shouldn't happen */ 1541 return (EINVAL); 1542 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1543 if (sce->ra_wb_xfer == NULL) 1544 return (ENOMEM); 1545 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1546 /* 1547 * Set up a dmabuf because we reuse the xfer with 1548 * the same (max) request length like isoc. 1549 */ 1550 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1551 sce->ra_wb_xferlen) == 0) { 1552 usbd_free_xfer(sce->ra_wb_xfer); 1553 return (ENOMEM); 1554 } 1555 sce->ibuf = malloc(sce->ra_wb_bufsize, 1556 M_USBDEV, M_WAITOK); 1557 sce->fill = sce->cur = sce->ibuf; 1558 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1559 sce->ra_wb_used = 0; 1560 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1561 } else { 1562 /* Only turn WB off if it's currently on. */ 1563 if (!(sce->state & UGEN_BULK_WB)) 1564 return (0); 1565 1566 sce->state &= ~UGEN_BULK_WB; 1567 /* 1568 * XXX Discard whatever's in the buffer, but we 1569 * should keep it around and keep writing to 1570 * drain the buffer instead. 1571 */ 1572 usbd_abort_pipe(sce->pipeh); 1573 usbd_free_xfer(sce->ra_wb_xfer); 1574 free(sce->ibuf, M_USBDEV); 1575 sce->ibuf = NULL; 1576 } 1577 return (0); 1578 #else 1579 return (EOPNOTSUPP); 1580 #endif 1581 case USB_SET_BULK_RA_OPT: 1582 case USB_SET_BULK_WB_OPT: 1583 #ifdef UGEN_BULK_RA_WB 1584 { 1585 struct usb_bulk_ra_wb_opt *opt; 1586 1587 if (endpt == USB_CONTROL_ENDPOINT) 1588 return (EINVAL); 1589 opt = (struct usb_bulk_ra_wb_opt *)addr; 1590 if (cmd == USB_SET_BULK_RA_OPT) 1591 sce = &sc->sc_endpoints[endpt][IN]; 1592 else 1593 sce = &sc->sc_endpoints[endpt][OUT]; 1594 if (sce == NULL || sce->pipeh == NULL) 1595 return (EINVAL); 1596 if (opt->ra_wb_buffer_size < 1 || 1597 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1598 opt->ra_wb_request_size < 1 || 1599 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1600 return (EINVAL); 1601 /* 1602 * XXX These changes do not take effect until the 1603 * next time RA/WB mode is enabled but they ought to 1604 * take effect immediately. 1605 */ 1606 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1607 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1608 return (0); 1609 } 1610 #else 1611 return (EOPNOTSUPP); 1612 #endif 1613 default: 1614 break; 1615 } 1616 1617 if (endpt != USB_CONTROL_ENDPOINT) 1618 return (EINVAL); 1619 1620 switch (cmd) { 1621 #ifdef UGEN_DEBUG 1622 case USB_SETDEBUG: 1623 ugendebug = *(int *)addr; 1624 break; 1625 #endif 1626 case USB_GET_CONFIG: 1627 err = usbd_get_config(sc->sc_udev, &conf); 1628 if (err) 1629 return (EIO); 1630 *(int *)addr = conf; 1631 break; 1632 case USB_SET_CONFIG: 1633 if (!(flag & FWRITE)) 1634 return (EPERM); 1635 err = ugen_set_config(sc, *(int *)addr); 1636 switch (err) { 1637 case USBD_NORMAL_COMPLETION: 1638 break; 1639 case USBD_IN_USE: 1640 return (EBUSY); 1641 default: 1642 return (EIO); 1643 } 1644 break; 1645 case USB_GET_ALTINTERFACE: 1646 ai = (struct usb_alt_interface *)addr; 1647 err = usbd_device2interface_handle(sc->sc_udev, 1648 ai->uai_interface_index, &iface); 1649 if (err) 1650 return (EINVAL); 1651 idesc = usbd_get_interface_descriptor(iface); 1652 if (idesc == NULL) 1653 return (EIO); 1654 ai->uai_alt_no = idesc->bAlternateSetting; 1655 break; 1656 case USB_SET_ALTINTERFACE: 1657 if (!(flag & FWRITE)) 1658 return (EPERM); 1659 ai = (struct usb_alt_interface *)addr; 1660 err = usbd_device2interface_handle(sc->sc_udev, 1661 ai->uai_interface_index, &iface); 1662 if (err) 1663 return (EINVAL); 1664 err = ugen_set_interface(sc, ai->uai_interface_index, 1665 ai->uai_alt_no); 1666 if (err) 1667 return (EINVAL); 1668 break; 1669 case USB_GET_NO_ALT: 1670 ai = (struct usb_alt_interface *)addr; 1671 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1672 if (cdesc == NULL) 1673 return (EINVAL); 1674 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1675 if (idesc == NULL) { 1676 free(cdesc, M_TEMP); 1677 return (EINVAL); 1678 } 1679 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1680 idesc->bInterfaceNumber); 1681 free(cdesc, M_TEMP); 1682 break; 1683 case USB_GET_DEVICE_DESC: 1684 *(usb_device_descriptor_t *)addr = 1685 *usbd_get_device_descriptor(sc->sc_udev); 1686 break; 1687 case USB_GET_CONFIG_DESC: 1688 cd = (struct usb_config_desc *)addr; 1689 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1690 if (cdesc == NULL) 1691 return (EINVAL); 1692 cd->ucd_desc = *cdesc; 1693 free(cdesc, M_TEMP); 1694 break; 1695 case USB_GET_INTERFACE_DESC: 1696 id = (struct usb_interface_desc *)addr; 1697 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1698 if (cdesc == NULL) 1699 return (EINVAL); 1700 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1701 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1702 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1703 else 1704 alt = id->uid_alt_index; 1705 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1706 if (idesc == NULL) { 1707 free(cdesc, M_TEMP); 1708 return (EINVAL); 1709 } 1710 id->uid_desc = *idesc; 1711 free(cdesc, M_TEMP); 1712 break; 1713 case USB_GET_ENDPOINT_DESC: 1714 ed = (struct usb_endpoint_desc *)addr; 1715 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1716 if (cdesc == NULL) 1717 return (EINVAL); 1718 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1719 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1720 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1721 else 1722 alt = ed->ued_alt_index; 1723 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1724 alt, ed->ued_endpoint_index); 1725 if (edesc == NULL) { 1726 free(cdesc, M_TEMP); 1727 return (EINVAL); 1728 } 1729 ed->ued_desc = *edesc; 1730 free(cdesc, M_TEMP); 1731 break; 1732 case USB_GET_FULL_DESC: 1733 { 1734 int len; 1735 struct iovec iov; 1736 struct uio uio; 1737 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1738 int error; 1739 1740 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1741 if (len > fd->ufd_size) 1742 len = fd->ufd_size; 1743 iov.iov_base = (void *)fd->ufd_data; 1744 iov.iov_len = len; 1745 uio.uio_iov = &iov; 1746 uio.uio_iovcnt = 1; 1747 uio.uio_resid = len; 1748 uio.uio_offset = 0; 1749 uio.uio_rw = UIO_READ; 1750 uio.uio_vmspace = l->l_proc->p_vmspace; 1751 error = uiomove((void *)cdesc, len, &uio); 1752 free(cdesc, M_TEMP); 1753 return (error); 1754 } 1755 case USB_GET_STRING_DESC: { 1756 int len; 1757 si = (struct usb_string_desc *)addr; 1758 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1759 si->usd_language_id, &si->usd_desc, &len); 1760 if (err) 1761 return (EINVAL); 1762 break; 1763 } 1764 case USB_DO_REQUEST: 1765 { 1766 struct usb_ctl_request *ur = (void *)addr; 1767 int len = UGETW(ur->ucr_request.wLength); 1768 struct iovec iov; 1769 struct uio uio; 1770 void *ptr = 0; 1771 usbd_status xerr; 1772 int error = 0; 1773 1774 if (!(flag & FWRITE)) 1775 return (EPERM); 1776 /* Avoid requests that would damage the bus integrity. */ 1777 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1778 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1779 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1780 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1781 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1782 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1783 return (EINVAL); 1784 1785 if (len < 0 || len > 32767) 1786 return (EINVAL); 1787 if (len != 0) { 1788 iov.iov_base = (void *)ur->ucr_data; 1789 iov.iov_len = len; 1790 uio.uio_iov = &iov; 1791 uio.uio_iovcnt = 1; 1792 uio.uio_resid = len; 1793 uio.uio_offset = 0; 1794 uio.uio_rw = 1795 ur->ucr_request.bmRequestType & UT_READ ? 1796 UIO_READ : UIO_WRITE; 1797 uio.uio_vmspace = l->l_proc->p_vmspace; 1798 ptr = malloc(len, M_TEMP, M_WAITOK); 1799 if (uio.uio_rw == UIO_WRITE) { 1800 error = uiomove(ptr, len, &uio); 1801 if (error) 1802 goto ret; 1803 } 1804 } 1805 sce = &sc->sc_endpoints[endpt][IN]; 1806 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1807 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1808 if (xerr) { 1809 error = EIO; 1810 goto ret; 1811 } 1812 if (len != 0) { 1813 if (uio.uio_rw == UIO_READ) { 1814 error = uiomove(ptr, len, &uio); 1815 if (error) 1816 goto ret; 1817 } 1818 } 1819 ret: 1820 if (ptr) 1821 free(ptr, M_TEMP); 1822 return (error); 1823 } 1824 case USB_GET_DEVICEINFO: 1825 usbd_fill_deviceinfo(sc->sc_udev, 1826 (struct usb_device_info *)addr, 0); 1827 break; 1828 #ifdef COMPAT_30 1829 case USB_GET_DEVICEINFO_OLD: 1830 usbd_fill_deviceinfo_old(sc->sc_udev, 1831 (struct usb_device_info_old *)addr, 0); 1832 1833 break; 1834 #endif 1835 default: 1836 return (EINVAL); 1837 } 1838 return (0); 1839 } 1840 1841 int 1842 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1843 { 1844 int endpt = UGENENDPOINT(dev); 1845 struct ugen_softc *sc; 1846 int error; 1847 1848 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1849 1850 sc->sc_refcnt++; 1851 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1852 if (--sc->sc_refcnt < 0) 1853 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1854 return (error); 1855 } 1856 1857 int 1858 ugenpoll(dev_t dev, int events, struct lwp *l) 1859 { 1860 struct ugen_softc *sc; 1861 struct ugen_endpoint *sce_in, *sce_out; 1862 int revents = 0; 1863 int s; 1864 1865 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1866 1867 if (sc->sc_dying) 1868 return (POLLHUP); 1869 1870 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1871 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1872 if (sce_in == NULL && sce_out == NULL) 1873 return (POLLERR); 1874 #ifdef DIAGNOSTIC 1875 if (!sce_in->edesc && !sce_out->edesc) { 1876 printf("ugenpoll: no edesc\n"); 1877 return (POLLERR); 1878 } 1879 /* It's possible to have only one pipe open. */ 1880 if (!sce_in->pipeh && !sce_out->pipeh) { 1881 printf("ugenpoll: no pipe\n"); 1882 return (POLLERR); 1883 } 1884 #endif 1885 s = splusb(); 1886 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1887 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1888 case UE_INTERRUPT: 1889 if (sce_in->q.c_cc > 0) 1890 revents |= events & (POLLIN | POLLRDNORM); 1891 else 1892 selrecord(l, &sce_in->rsel); 1893 break; 1894 case UE_ISOCHRONOUS: 1895 if (sce_in->cur != sce_in->fill) 1896 revents |= events & (POLLIN | POLLRDNORM); 1897 else 1898 selrecord(l, &sce_in->rsel); 1899 break; 1900 case UE_BULK: 1901 #ifdef UGEN_BULK_RA_WB 1902 if (sce_in->state & UGEN_BULK_RA) { 1903 if (sce_in->ra_wb_used > 0) 1904 revents |= events & 1905 (POLLIN | POLLRDNORM); 1906 else 1907 selrecord(l, &sce_in->rsel); 1908 break; 1909 } 1910 #endif 1911 /* 1912 * We have no easy way of determining if a read will 1913 * yield any data or a write will happen. 1914 * Pretend they will. 1915 */ 1916 revents |= events & (POLLIN | POLLRDNORM); 1917 break; 1918 default: 1919 break; 1920 } 1921 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1922 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1923 case UE_INTERRUPT: 1924 case UE_ISOCHRONOUS: 1925 /* XXX unimplemented */ 1926 break; 1927 case UE_BULK: 1928 #ifdef UGEN_BULK_RA_WB 1929 if (sce_out->state & UGEN_BULK_WB) { 1930 if (sce_out->ra_wb_used < 1931 sce_out->limit - sce_out->ibuf) 1932 revents |= events & 1933 (POLLOUT | POLLWRNORM); 1934 else 1935 selrecord(l, &sce_out->rsel); 1936 break; 1937 } 1938 #endif 1939 /* 1940 * We have no easy way of determining if a read will 1941 * yield any data or a write will happen. 1942 * Pretend they will. 1943 */ 1944 revents |= events & (POLLOUT | POLLWRNORM); 1945 break; 1946 default: 1947 break; 1948 } 1949 1950 1951 splx(s); 1952 return (revents); 1953 } 1954 1955 static void 1956 filt_ugenrdetach(struct knote *kn) 1957 { 1958 struct ugen_endpoint *sce = kn->kn_hook; 1959 int s; 1960 1961 s = splusb(); 1962 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1963 splx(s); 1964 } 1965 1966 static int 1967 filt_ugenread_intr(struct knote *kn, long hint) 1968 { 1969 struct ugen_endpoint *sce = kn->kn_hook; 1970 1971 kn->kn_data = sce->q.c_cc; 1972 return (kn->kn_data > 0); 1973 } 1974 1975 static int 1976 filt_ugenread_isoc(struct knote *kn, long hint) 1977 { 1978 struct ugen_endpoint *sce = kn->kn_hook; 1979 1980 if (sce->cur == sce->fill) 1981 return (0); 1982 1983 if (sce->cur < sce->fill) 1984 kn->kn_data = sce->fill - sce->cur; 1985 else 1986 kn->kn_data = (sce->limit - sce->cur) + 1987 (sce->fill - sce->ibuf); 1988 1989 return (1); 1990 } 1991 1992 #ifdef UGEN_BULK_RA_WB 1993 static int 1994 filt_ugenread_bulk(struct knote *kn, long hint) 1995 { 1996 struct ugen_endpoint *sce = kn->kn_hook; 1997 1998 if (!(sce->state & UGEN_BULK_RA)) 1999 /* 2000 * We have no easy way of determining if a read will 2001 * yield any data or a write will happen. 2002 * So, emulate "seltrue". 2003 */ 2004 return (filt_seltrue(kn, hint)); 2005 2006 if (sce->ra_wb_used == 0) 2007 return (0); 2008 2009 kn->kn_data = sce->ra_wb_used; 2010 2011 return (1); 2012 } 2013 2014 static int 2015 filt_ugenwrite_bulk(struct knote *kn, long hint) 2016 { 2017 struct ugen_endpoint *sce = kn->kn_hook; 2018 2019 if (!(sce->state & UGEN_BULK_WB)) 2020 /* 2021 * We have no easy way of determining if a read will 2022 * yield any data or a write will happen. 2023 * So, emulate "seltrue". 2024 */ 2025 return (filt_seltrue(kn, hint)); 2026 2027 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2028 return (0); 2029 2030 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2031 2032 return (1); 2033 } 2034 #endif 2035 2036 static const struct filterops ugenread_intr_filtops = 2037 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2038 2039 static const struct filterops ugenread_isoc_filtops = 2040 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2041 2042 #ifdef UGEN_BULK_RA_WB 2043 static const struct filterops ugenread_bulk_filtops = 2044 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2045 2046 static const struct filterops ugenwrite_bulk_filtops = 2047 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2048 #else 2049 static const struct filterops ugen_seltrue_filtops = 2050 { 1, NULL, filt_ugenrdetach, filt_seltrue }; 2051 #endif 2052 2053 int 2054 ugenkqfilter(dev_t dev, struct knote *kn) 2055 { 2056 struct ugen_softc *sc; 2057 struct ugen_endpoint *sce; 2058 struct klist *klist; 2059 int s; 2060 2061 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2062 2063 if (sc->sc_dying) 2064 return (ENXIO); 2065 2066 switch (kn->kn_filter) { 2067 case EVFILT_READ: 2068 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2069 if (sce == NULL) 2070 return (EINVAL); 2071 2072 klist = &sce->rsel.sel_klist; 2073 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2074 case UE_INTERRUPT: 2075 kn->kn_fop = &ugenread_intr_filtops; 2076 break; 2077 case UE_ISOCHRONOUS: 2078 kn->kn_fop = &ugenread_isoc_filtops; 2079 break; 2080 case UE_BULK: 2081 #ifdef UGEN_BULK_RA_WB 2082 kn->kn_fop = &ugenread_bulk_filtops; 2083 break; 2084 #else 2085 /* 2086 * We have no easy way of determining if a read will 2087 * yield any data or a write will happen. 2088 * So, emulate "seltrue". 2089 */ 2090 kn->kn_fop = &ugen_seltrue_filtops; 2091 #endif 2092 break; 2093 default: 2094 return (EINVAL); 2095 } 2096 break; 2097 2098 case EVFILT_WRITE: 2099 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2100 if (sce == NULL) 2101 return (EINVAL); 2102 2103 klist = &sce->rsel.sel_klist; 2104 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2105 case UE_INTERRUPT: 2106 case UE_ISOCHRONOUS: 2107 /* XXX poll doesn't support this */ 2108 return (EINVAL); 2109 2110 case UE_BULK: 2111 #ifdef UGEN_BULK_RA_WB 2112 kn->kn_fop = &ugenwrite_bulk_filtops; 2113 #else 2114 /* 2115 * We have no easy way of determining if a read will 2116 * yield any data or a write will happen. 2117 * So, emulate "seltrue". 2118 */ 2119 kn->kn_fop = &ugen_seltrue_filtops; 2120 #endif 2121 break; 2122 default: 2123 return (EINVAL); 2124 } 2125 break; 2126 2127 default: 2128 return (EINVAL); 2129 } 2130 2131 kn->kn_hook = sce; 2132 2133 s = splusb(); 2134 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2135 splx(s); 2136 2137 return (0); 2138 } 2139 2140 #if defined(__FreeBSD__) 2141 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2142 #endif 2143
Indexes created Thu Sep 25 16:09:42 GMT 2025