ugen.c revision 1.124.4.1
1 /* $NetBSD: ugen.c,v 1.124.4.1 2016/03/06 18:10:20 martin Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Copyright (c) 2006 BBN Technologies Corp. All rights reserved. 12 * Effort sponsored in part by the Defense Advanced Research Projects 13 * Agency (DARPA) and the Department of the Interior National Business 14 * Center under agreement number NBCHC050166. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.124.4.1 2016/03/06 18:10:20 martin Exp $"); 41 42 #ifdef _KERNEL_OPT 43 #include "opt_compat_netbsd.h" 44 #endif 45 46 #include <sys/param.h> 47 #include <sys/systm.h> 48 #include <sys/kernel.h> 49 #include <sys/malloc.h> 50 #include <sys/device.h> 51 #include <sys/ioctl.h> 52 #include <sys/conf.h> 53 #include <sys/tty.h> 54 #include <sys/file.h> 55 #include <sys/select.h> 56 #include <sys/proc.h> 57 #include <sys/vnode.h> 58 #include <sys/poll.h> 59 60 #include <dev/usb/usb.h> 61 #include <dev/usb/usbdi.h> 62 #include <dev/usb/usbdi_util.h> 63 64 #ifdef UGEN_DEBUG 65 #define DPRINTF(x) if (ugendebug) printf x 66 #define DPRINTFN(n,x) if (ugendebug>(n)) printf x 67 int ugendebug = 0; 68 #else 69 #define DPRINTF(x) 70 #define DPRINTFN(n,x) 71 #endif 72 73 #define UGEN_CHUNK 128 /* chunk size for read */ 74 #define UGEN_IBSIZE 1020 /* buffer size */ 75 #define UGEN_BBSIZE 1024 76 77 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 78 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 79 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 80 81 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 82 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 83 84 struct ugen_endpoint { 85 struct ugen_softc *sc; 86 usb_endpoint_descriptor_t *edesc; 87 usbd_interface_handle iface; 88 int state; 89 #define UGEN_ASLP 0x02 /* waiting for data */ 90 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 91 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 92 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 93 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 94 usbd_pipe_handle pipeh; 95 struct clist q; 96 u_char *ibuf; /* start of buffer (circular for isoc) */ 97 u_char *fill; /* location for input (isoc) */ 98 u_char *limit; /* end of circular buffer (isoc) */ 99 u_char *cur; /* current read location (isoc) */ 100 u_int32_t timeout; 101 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 102 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 103 u_int32_t ra_wb_used; /* how much is in buffer */ 104 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 105 usbd_xfer_handle ra_wb_xfer; 106 struct isoreq { 107 struct ugen_endpoint *sce; 108 usbd_xfer_handle xfer; 109 void *dmabuf; 110 u_int16_t sizes[UGEN_NISORFRMS]; 111 } isoreqs[UGEN_NISOREQS]; 112 /* Keep these last; we don't overwrite them in ugen_set_config() */ 113 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 114 struct selinfo rsel; 115 kcondvar_t cv; 116 }; 117 118 struct ugen_softc { 119 device_t sc_dev; /* base device */ 120 usbd_device_handle sc_udev; 121 122 kmutex_t sc_lock; 123 kcondvar_t sc_detach_cv; 124 125 char sc_is_open[USB_MAX_ENDPOINTS]; 126 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 127 #define OUT 0 128 #define IN 1 129 130 int sc_refcnt; 131 char sc_buffer[UGEN_BBSIZE]; 132 u_char sc_dying; 133 }; 134 135 dev_type_open(ugenopen); 136 dev_type_close(ugenclose); 137 dev_type_read(ugenread); 138 dev_type_write(ugenwrite); 139 dev_type_ioctl(ugenioctl); 140 dev_type_poll(ugenpoll); 141 dev_type_kqfilter(ugenkqfilter); 142 143 const struct cdevsw ugen_cdevsw = { 144 .d_open = ugenopen, 145 .d_close = ugenclose, 146 .d_read = ugenread, 147 .d_write = ugenwrite, 148 .d_ioctl = ugenioctl, 149 .d_stop = nostop, 150 .d_tty = notty, 151 .d_poll = ugenpoll, 152 .d_mmap = nommap, 153 .d_kqfilter = ugenkqfilter, 154 .d_discard = nodiscard, 155 .d_flag = D_OTHER, 156 }; 157 158 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 159 usbd_status status); 160 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 161 usbd_status status); 162 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 163 usbd_status status); 164 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 165 usbd_status status); 166 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 167 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 168 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 169 void *, int, struct lwp *); 170 Static int ugen_set_config(struct ugen_softc *sc, int configno); 171 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 172 int index, int *lenp); 173 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 174 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 175 176 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 177 #define UGENENDPOINT(n) (minor(n) & 0xf) 178 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 179 180 int ugen_match(device_t, cfdata_t, void *); 181 void ugen_attach(device_t, device_t, void *); 182 int ugen_detach(device_t, int); 183 int ugen_activate(device_t, enum devact); 184 extern struct cfdriver ugen_cd; 185 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, ugen_attach, ugen_detach, ugen_activate); 186 187 /* toggle to control attach priority. -1 means "let autoconf decide" */ 188 int ugen_override = -1; 189 190 int 191 ugen_match(device_t parent, cfdata_t match, void *aux) 192 { 193 struct usb_attach_arg *uaa = aux; 194 int override; 195 196 if (ugen_override != -1) 197 override = ugen_override; 198 else 199 override = match->cf_flags & 1; 200 201 if (override) 202 return (UMATCH_HIGHEST); 203 else if (uaa->usegeneric) 204 return (UMATCH_GENERIC); 205 else 206 return (UMATCH_NONE); 207 } 208 209 void 210 ugen_attach(device_t parent, device_t self, void *aux) 211 { 212 struct ugen_softc *sc = device_private(self); 213 struct usb_attach_arg *uaa = aux; 214 usbd_device_handle udev; 215 char *devinfop; 216 usbd_status err; 217 int i, dir, conf; 218 219 aprint_naive("\n"); 220 aprint_normal("\n"); 221 222 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_USB); 223 cv_init(&sc->sc_detach_cv, "ugendet"); 224 225 devinfop = usbd_devinfo_alloc(uaa->device, 0); 226 aprint_normal_dev(self, "%s\n", devinfop); 227 usbd_devinfo_free(devinfop); 228 229 sc->sc_dev = self; 230 sc->sc_udev = udev = uaa->device; 231 232 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 233 for (dir = OUT; dir <= IN; dir++) { 234 struct ugen_endpoint *sce; 235 236 sce = &sc->sc_endpoints[i][dir]; 237 selinit(&sce->rsel); 238 cv_init(&sce->cv, "ugensce"); 239 } 240 } 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_dev(self, 246 "setting configuration index 0 failed\n"); 247 sc->sc_dying = 1; 248 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_dev(self, "setting configuration %d failed\n", 256 conf); 257 sc->sc_dying = 1; 258 return; 259 } 260 261 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 262 sc->sc_dev); 263 264 if (!pmf_device_register(self, NULL, NULL)) 265 aprint_error_dev(self, "couldn't establish power handler\n"); 266 267 return; 268 } 269 270 Static void 271 ugen_clear_endpoints(struct ugen_softc *sc) 272 { 273 274 /* Clear out the old info, but leave the selinfo and cv initialised. */ 275 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 276 for (int dir = OUT; dir <= IN; dir++) { 277 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 278 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 279 } 280 } 281 } 282 283 Static int 284 ugen_set_config(struct ugen_softc *sc, int configno) 285 { 286 usbd_device_handle dev = sc->sc_udev; 287 usb_config_descriptor_t *cdesc; 288 usbd_interface_handle iface; 289 usb_endpoint_descriptor_t *ed; 290 struct ugen_endpoint *sce; 291 u_int8_t niface, nendpt; 292 int ifaceno, endptno, endpt; 293 usbd_status err; 294 int dir; 295 296 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 297 device_xname(sc->sc_dev), configno, sc)); 298 299 /* 300 * We start at 1, not 0, because we don't care whether the 301 * control endpoint is open or not. It is always present. 302 */ 303 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 304 if (sc->sc_is_open[endptno]) { 305 DPRINTFN(1, 306 ("ugen_set_config: %s - endpoint %d is open\n", 307 device_xname(sc->sc_dev), endptno)); 308 return (USBD_IN_USE); 309 } 310 311 /* Avoid setting the current value. */ 312 cdesc = usbd_get_config_descriptor(dev); 313 if (!cdesc || cdesc->bConfigurationValue != configno) { 314 err = usbd_set_config_no(dev, configno, 1); 315 if (err) 316 return (err); 317 } 318 319 err = usbd_interface_count(dev, &niface); 320 if (err) 321 return (err); 322 323 ugen_clear_endpoints(sc); 324 325 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 326 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 327 err = usbd_device2interface_handle(dev, ifaceno, &iface); 328 if (err) 329 return (err); 330 err = usbd_endpoint_count(iface, &nendpt); 331 if (err) 332 return (err); 333 for (endptno = 0; endptno < nendpt; endptno++) { 334 ed = usbd_interface2endpoint_descriptor(iface,endptno); 335 KASSERT(ed != NULL); 336 endpt = ed->bEndpointAddress; 337 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 338 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 339 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 340 "(%d,%d), sce=%p\n", 341 endptno, endpt, UE_GET_ADDR(endpt), 342 UE_GET_DIR(endpt), sce)); 343 sce->sc = sc; 344 sce->edesc = ed; 345 sce->iface = iface; 346 } 347 } 348 return (USBD_NORMAL_COMPLETION); 349 } 350 351 int 352 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 353 { 354 struct ugen_softc *sc; 355 int unit = UGENUNIT(dev); 356 int endpt = UGENENDPOINT(dev); 357 usb_endpoint_descriptor_t *edesc; 358 struct ugen_endpoint *sce; 359 int dir, isize; 360 usbd_status err; 361 usbd_xfer_handle xfer; 362 void *tbuf; 363 int i, j; 364 365 sc = device_lookup_private(&ugen_cd, unit); 366 if (sc == NULL) 367 return ENXIO; 368 369 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 370 flag, mode, unit, endpt)); 371 372 if (sc == NULL || sc->sc_dying) 373 return (ENXIO); 374 375 /* The control endpoint allows multiple opens. */ 376 if (endpt == USB_CONTROL_ENDPOINT) { 377 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 378 return (0); 379 } 380 381 if (sc->sc_is_open[endpt]) 382 return (EBUSY); 383 384 /* Make sure there are pipes for all directions. */ 385 for (dir = OUT; dir <= IN; dir++) { 386 if (flag & (dir == OUT ? FWRITE : FREAD)) { 387 sce = &sc->sc_endpoints[endpt][dir]; 388 if (sce->edesc == NULL) 389 return (ENXIO); 390 } 391 } 392 393 /* Actually open the pipes. */ 394 /* XXX Should back out properly if it fails. */ 395 for (dir = OUT; dir <= IN; dir++) { 396 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 397 continue; 398 sce = &sc->sc_endpoints[endpt][dir]; 399 sce->state = 0; 400 sce->timeout = USBD_NO_TIMEOUT; 401 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 402 sc, endpt, dir, sce)); 403 edesc = sce->edesc; 404 switch (edesc->bmAttributes & UE_XFERTYPE) { 405 case UE_INTERRUPT: 406 if (dir == OUT) { 407 err = usbd_open_pipe(sce->iface, 408 edesc->bEndpointAddress, 0, &sce->pipeh); 409 if (err) 410 return (EIO); 411 break; 412 } 413 isize = UGETW(edesc->wMaxPacketSize); 414 if (isize == 0) /* shouldn't happen */ 415 return (EINVAL); 416 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 417 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 418 endpt, isize)); 419 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 420 free(sce->ibuf, M_USBDEV); 421 sce->ibuf = NULL; 422 return (ENOMEM); 423 } 424 err = usbd_open_pipe_intr(sce->iface, 425 edesc->bEndpointAddress, 426 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 427 sce->ibuf, isize, ugenintr, 428 USBD_DEFAULT_INTERVAL); 429 if (err) { 430 clfree(&sce->q); 431 free(sce->ibuf, M_USBDEV); 432 sce->ibuf = NULL; 433 return (EIO); 434 } 435 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 436 break; 437 case UE_BULK: 438 err = usbd_open_pipe(sce->iface, 439 edesc->bEndpointAddress, 0, &sce->pipeh); 440 if (err) 441 return (EIO); 442 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 443 /* 444 * Use request size for non-RA/WB transfers 445 * as the default. 446 */ 447 sce->ra_wb_reqsize = UGEN_BBSIZE; 448 break; 449 case UE_ISOCHRONOUS: 450 if (dir == OUT) 451 return (EINVAL); 452 isize = UGETW(edesc->wMaxPacketSize); 453 if (isize == 0) /* shouldn't happen */ 454 return (EINVAL); 455 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 456 M_USBDEV, M_WAITOK); 457 sce->cur = sce->fill = sce->ibuf; 458 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 459 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 460 endpt, isize)); 461 err = usbd_open_pipe(sce->iface, 462 edesc->bEndpointAddress, 0, &sce->pipeh); 463 if (err) { 464 free(sce->ibuf, M_USBDEV); 465 sce->ibuf = NULL; 466 return (EIO); 467 } 468 for(i = 0; i < UGEN_NISOREQS; ++i) { 469 sce->isoreqs[i].sce = sce; 470 xfer = usbd_alloc_xfer(sc->sc_udev); 471 if (xfer == 0) 472 goto bad; 473 sce->isoreqs[i].xfer = xfer; 474 tbuf = usbd_alloc_buffer 475 (xfer, isize * UGEN_NISORFRMS); 476 if (tbuf == 0) { 477 i++; 478 goto bad; 479 } 480 sce->isoreqs[i].dmabuf = tbuf; 481 for(j = 0; j < UGEN_NISORFRMS; ++j) 482 sce->isoreqs[i].sizes[j] = isize; 483 usbd_setup_isoc_xfer 484 (xfer, sce->pipeh, &sce->isoreqs[i], 485 sce->isoreqs[i].sizes, 486 UGEN_NISORFRMS, USBD_NO_COPY, 487 ugen_isoc_rintr); 488 (void)usbd_transfer(xfer); 489 } 490 DPRINTFN(5, ("ugenopen: isoc open done\n")); 491 break; 492 bad: 493 while (--i >= 0) /* implicit buffer free */ 494 usbd_free_xfer(sce->isoreqs[i].xfer); 495 usbd_close_pipe(sce->pipeh); 496 sce->pipeh = NULL; 497 free(sce->ibuf, M_USBDEV); 498 sce->ibuf = NULL; 499 return (ENOMEM); 500 case UE_CONTROL: 501 sce->timeout = USBD_DEFAULT_TIMEOUT; 502 return (EINVAL); 503 } 504 } 505 sc->sc_is_open[endpt] = 1; 506 return (0); 507 } 508 509 int 510 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 511 { 512 int endpt = UGENENDPOINT(dev); 513 struct ugen_softc *sc; 514 struct ugen_endpoint *sce; 515 int dir; 516 int i; 517 518 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 519 if (sc == NULL) 520 return ENXIO; 521 522 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 523 flag, mode, UGENUNIT(dev), endpt)); 524 525 #ifdef DIAGNOSTIC 526 if (!sc->sc_is_open[endpt]) { 527 printf("ugenclose: not open\n"); 528 return (EINVAL); 529 } 530 #endif 531 532 if (endpt == USB_CONTROL_ENDPOINT) { 533 DPRINTFN(5, ("ugenclose: close control\n")); 534 sc->sc_is_open[endpt] = 0; 535 return (0); 536 } 537 538 for (dir = OUT; dir <= IN; dir++) { 539 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 540 continue; 541 sce = &sc->sc_endpoints[endpt][dir]; 542 if (sce->pipeh == NULL) 543 continue; 544 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 545 endpt, dir, sce)); 546 547 usbd_abort_pipe(sce->pipeh); 548 usbd_close_pipe(sce->pipeh); 549 sce->pipeh = NULL; 550 551 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 552 case UE_INTERRUPT: 553 ndflush(&sce->q, sce->q.c_cc); 554 clfree(&sce->q); 555 break; 556 case UE_ISOCHRONOUS: 557 for (i = 0; i < UGEN_NISOREQS; ++i) 558 usbd_free_xfer(sce->isoreqs[i].xfer); 559 break; 560 case UE_BULK: 561 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 562 /* ibuf freed below */ 563 usbd_free_xfer(sce->ra_wb_xfer); 564 break; 565 default: 566 break; 567 } 568 569 if (sce->ibuf != NULL) { 570 free(sce->ibuf, M_USBDEV); 571 sce->ibuf = NULL; 572 } 573 } 574 sc->sc_is_open[endpt] = 0; 575 576 return (0); 577 } 578 579 Static int 580 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 581 { 582 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 583 u_int32_t n, tn; 584 usbd_xfer_handle xfer; 585 usbd_status err; 586 int error = 0; 587 588 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 589 590 if (sc->sc_dying) 591 return (EIO); 592 593 if (endpt == USB_CONTROL_ENDPOINT) 594 return (ENODEV); 595 596 #ifdef DIAGNOSTIC 597 if (sce->edesc == NULL) { 598 printf("ugenread: no edesc\n"); 599 return (EIO); 600 } 601 if (sce->pipeh == NULL) { 602 printf("ugenread: no pipe\n"); 603 return (EIO); 604 } 605 #endif 606 607 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 608 case UE_INTERRUPT: 609 /* Block until activity occurred. */ 610 mutex_enter(&sc->sc_lock); 611 while (sce->q.c_cc == 0) { 612 if (flag & IO_NDELAY) { 613 mutex_exit(&sc->sc_lock); 614 return (EWOULDBLOCK); 615 } 616 sce->state |= UGEN_ASLP; 617 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 618 /* "ugenri" */ 619 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 620 mstohz(sce->timeout)); 621 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 622 if (sc->sc_dying) 623 error = EIO; 624 if (error) { 625 sce->state &= ~UGEN_ASLP; 626 break; 627 } 628 } 629 mutex_exit(&sc->sc_lock); 630 631 /* Transfer as many chunks as possible. */ 632 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 633 n = min(sce->q.c_cc, uio->uio_resid); 634 if (n > sizeof(sc->sc_buffer)) 635 n = sizeof(sc->sc_buffer); 636 637 /* Remove a small chunk from the input queue. */ 638 q_to_b(&sce->q, sc->sc_buffer, n); 639 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 640 641 /* Copy the data to the user process. */ 642 error = uiomove(sc->sc_buffer, n, uio); 643 if (error) 644 break; 645 } 646 break; 647 case UE_BULK: 648 if (sce->state & UGEN_BULK_RA) { 649 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 650 uio->uio_resid, sce->ra_wb_used)); 651 xfer = sce->ra_wb_xfer; 652 653 mutex_enter(&sc->sc_lock); 654 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 655 mutex_exit(&sc->sc_lock); 656 return (EWOULDBLOCK); 657 } 658 while (uio->uio_resid > 0 && !error) { 659 while (sce->ra_wb_used == 0) { 660 sce->state |= UGEN_ASLP; 661 DPRINTFN(5, 662 ("ugenread: sleep on %p\n", 663 sce)); 664 /* "ugenrb" */ 665 error = cv_timedwait_sig(&sce->cv, 666 &sc->sc_lock, mstohz(sce->timeout)); 667 DPRINTFN(5, 668 ("ugenread: woke, error=%d\n", 669 error)); 670 if (sc->sc_dying) 671 error = EIO; 672 if (error) { 673 sce->state &= ~UGEN_ASLP; 674 break; 675 } 676 } 677 678 /* Copy data to the process. */ 679 while (uio->uio_resid > 0 680 && sce->ra_wb_used > 0) { 681 n = min(uio->uio_resid, 682 sce->ra_wb_used); 683 n = min(n, sce->limit - sce->cur); 684 error = uiomove(sce->cur, n, uio); 685 if (error) 686 break; 687 sce->cur += n; 688 sce->ra_wb_used -= n; 689 if (sce->cur == sce->limit) 690 sce->cur = sce->ibuf; 691 } 692 693 /* 694 * If the transfers stopped because the 695 * buffer was full, restart them. 696 */ 697 if (sce->state & UGEN_RA_WB_STOP && 698 sce->ra_wb_used < sce->limit - sce->ibuf) { 699 n = (sce->limit - sce->ibuf) 700 - sce->ra_wb_used; 701 usbd_setup_xfer(xfer, 702 sce->pipeh, sce, NULL, 703 min(n, sce->ra_wb_xferlen), 704 USBD_NO_COPY, USBD_NO_TIMEOUT, 705 ugen_bulkra_intr); 706 sce->state &= ~UGEN_RA_WB_STOP; 707 err = usbd_transfer(xfer); 708 if (err != USBD_IN_PROGRESS) 709 /* 710 * The transfer has not been 711 * queued. Setting STOP 712 * will make us try 713 * again at the next read. 714 */ 715 sce->state |= UGEN_RA_WB_STOP; 716 } 717 } 718 mutex_exit(&sc->sc_lock); 719 break; 720 } 721 xfer = usbd_alloc_xfer(sc->sc_udev); 722 if (xfer == 0) 723 return (ENOMEM); 724 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 725 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 726 tn = n; 727 err = usbd_bulk_transfer( 728 xfer, sce->pipeh, 729 sce->state & UGEN_SHORT_OK ? 730 USBD_SHORT_XFER_OK : 0, 731 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 732 if (err) { 733 if (err == USBD_INTERRUPTED) 734 error = EINTR; 735 else if (err == USBD_TIMEOUT) 736 error = ETIMEDOUT; 737 else 738 error = EIO; 739 break; 740 } 741 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 742 error = uiomove(sc->sc_buffer, tn, uio); 743 if (error || tn < n) 744 break; 745 } 746 usbd_free_xfer(xfer); 747 break; 748 case UE_ISOCHRONOUS: 749 mutex_enter(&sc->sc_lock); 750 while (sce->cur == sce->fill) { 751 if (flag & IO_NDELAY) { 752 mutex_exit(&sc->sc_lock); 753 return (EWOULDBLOCK); 754 } 755 sce->state |= UGEN_ASLP; 756 /* "ugenri" */ 757 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 758 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 759 mstohz(sce->timeout)); 760 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 761 if (sc->sc_dying) 762 error = EIO; 763 if (error) { 764 sce->state &= ~UGEN_ASLP; 765 break; 766 } 767 } 768 769 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 770 if(sce->fill > sce->cur) 771 n = min(sce->fill - sce->cur, uio->uio_resid); 772 else 773 n = min(sce->limit - sce->cur, uio->uio_resid); 774 775 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 776 777 /* Copy the data to the user process. */ 778 error = uiomove(sce->cur, n, uio); 779 if (error) 780 break; 781 sce->cur += n; 782 if (sce->cur >= sce->limit) 783 sce->cur = sce->ibuf; 784 } 785 mutex_exit(&sc->sc_lock); 786 break; 787 788 789 default: 790 return (ENXIO); 791 } 792 return (error); 793 } 794 795 int 796 ugenread(dev_t dev, struct uio *uio, int flag) 797 { 798 int endpt = UGENENDPOINT(dev); 799 struct ugen_softc *sc; 800 int error; 801 802 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 803 if (sc == NULL) 804 return ENXIO; 805 806 mutex_enter(&sc->sc_lock); 807 sc->sc_refcnt++; 808 mutex_exit(&sc->sc_lock); 809 810 error = ugen_do_read(sc, endpt, uio, flag); 811 812 mutex_enter(&sc->sc_lock); 813 if (--sc->sc_refcnt < 0) 814 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 815 mutex_exit(&sc->sc_lock); 816 817 return (error); 818 } 819 820 Static int 821 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 822 int flag) 823 { 824 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 825 u_int32_t n; 826 int error = 0; 827 u_int32_t tn; 828 char *dbuf; 829 usbd_xfer_handle xfer; 830 usbd_status err; 831 832 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 833 834 if (sc->sc_dying) 835 return (EIO); 836 837 if (endpt == USB_CONTROL_ENDPOINT) 838 return (ENODEV); 839 840 #ifdef DIAGNOSTIC 841 if (sce->edesc == NULL) { 842 printf("ugenwrite: no edesc\n"); 843 return (EIO); 844 } 845 if (sce->pipeh == NULL) { 846 printf("ugenwrite: no pipe\n"); 847 return (EIO); 848 } 849 #endif 850 851 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 852 case UE_BULK: 853 if (sce->state & UGEN_BULK_WB) { 854 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 855 uio->uio_resid, sce->ra_wb_used)); 856 xfer = sce->ra_wb_xfer; 857 858 mutex_enter(&sc->sc_lock); 859 if (sce->ra_wb_used == sce->limit - sce->ibuf && 860 flag & IO_NDELAY) { 861 mutex_exit(&sc->sc_lock); 862 return (EWOULDBLOCK); 863 } 864 while (uio->uio_resid > 0 && !error) { 865 while (sce->ra_wb_used == 866 sce->limit - sce->ibuf) { 867 sce->state |= UGEN_ASLP; 868 DPRINTFN(5, 869 ("ugenwrite: sleep on %p\n", 870 sce)); 871 /* "ugenwb" */ 872 error = cv_timedwait_sig(&sce->cv, 873 &sc->sc_lock, mstohz(sce->timeout)); 874 DPRINTFN(5, 875 ("ugenwrite: woke, error=%d\n", 876 error)); 877 if (sc->sc_dying) 878 error = EIO; 879 if (error) { 880 sce->state &= ~UGEN_ASLP; 881 break; 882 } 883 } 884 885 /* Copy data from the process. */ 886 while (uio->uio_resid > 0 && 887 sce->ra_wb_used < sce->limit - sce->ibuf) { 888 n = min(uio->uio_resid, 889 (sce->limit - sce->ibuf) 890 - sce->ra_wb_used); 891 n = min(n, sce->limit - sce->fill); 892 error = uiomove(sce->fill, n, uio); 893 if (error) 894 break; 895 sce->fill += n; 896 sce->ra_wb_used += n; 897 if (sce->fill == sce->limit) 898 sce->fill = sce->ibuf; 899 } 900 901 /* 902 * If the transfers stopped because the 903 * buffer was empty, restart them. 904 */ 905 if (sce->state & UGEN_RA_WB_STOP && 906 sce->ra_wb_used > 0) { 907 dbuf = (char *)usbd_get_buffer(xfer); 908 n = min(sce->ra_wb_used, 909 sce->ra_wb_xferlen); 910 tn = min(n, sce->limit - sce->cur); 911 memcpy(dbuf, sce->cur, tn); 912 dbuf += tn; 913 if (n - tn > 0) 914 memcpy(dbuf, sce->ibuf, 915 n - tn); 916 usbd_setup_xfer(xfer, 917 sce->pipeh, sce, NULL, n, 918 USBD_NO_COPY, USBD_NO_TIMEOUT, 919 ugen_bulkwb_intr); 920 sce->state &= ~UGEN_RA_WB_STOP; 921 err = usbd_transfer(xfer); 922 if (err != USBD_IN_PROGRESS) 923 /* 924 * The transfer has not been 925 * queued. Setting STOP 926 * will make us try again 927 * at the next read. 928 */ 929 sce->state |= UGEN_RA_WB_STOP; 930 } 931 } 932 mutex_exit(&sc->sc_lock); 933 break; 934 } 935 xfer = usbd_alloc_xfer(sc->sc_udev); 936 if (xfer == 0) 937 return (EIO); 938 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 939 error = uiomove(sc->sc_buffer, n, uio); 940 if (error) 941 break; 942 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 943 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 944 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 945 if (err) { 946 if (err == USBD_INTERRUPTED) 947 error = EINTR; 948 else if (err == USBD_TIMEOUT) 949 error = ETIMEDOUT; 950 else 951 error = EIO; 952 break; 953 } 954 } 955 usbd_free_xfer(xfer); 956 break; 957 case UE_INTERRUPT: 958 xfer = usbd_alloc_xfer(sc->sc_udev); 959 if (xfer == 0) 960 return (EIO); 961 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 962 uio->uio_resid)) != 0) { 963 error = uiomove(sc->sc_buffer, n, uio); 964 if (error) 965 break; 966 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 967 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 968 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 969 if (err) { 970 if (err == USBD_INTERRUPTED) 971 error = EINTR; 972 else if (err == USBD_TIMEOUT) 973 error = ETIMEDOUT; 974 else 975 error = EIO; 976 break; 977 } 978 } 979 usbd_free_xfer(xfer); 980 break; 981 default: 982 return (ENXIO); 983 } 984 return (error); 985 } 986 987 int 988 ugenwrite(dev_t dev, struct uio *uio, int flag) 989 { 990 int endpt = UGENENDPOINT(dev); 991 struct ugen_softc *sc; 992 int error; 993 994 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 995 if (sc == NULL) 996 return ENXIO; 997 998 mutex_enter(&sc->sc_lock); 999 sc->sc_refcnt++; 1000 mutex_exit(&sc->sc_lock); 1001 1002 error = ugen_do_write(sc, endpt, uio, flag); 1003 1004 mutex_enter(&sc->sc_lock); 1005 if (--sc->sc_refcnt < 0) 1006 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1007 mutex_exit(&sc->sc_lock); 1008 1009 return (error); 1010 } 1011 1012 int 1013 ugen_activate(device_t self, enum devact act) 1014 { 1015 struct ugen_softc *sc = device_private(self); 1016 1017 switch (act) { 1018 case DVACT_DEACTIVATE: 1019 sc->sc_dying = 1; 1020 return 0; 1021 default: 1022 return EOPNOTSUPP; 1023 } 1024 } 1025 1026 int 1027 ugen_detach(device_t self, int flags) 1028 { 1029 struct ugen_softc *sc = device_private(self); 1030 struct ugen_endpoint *sce; 1031 int i, dir; 1032 int maj, mn; 1033 1034 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1035 1036 sc->sc_dying = 1; 1037 pmf_device_deregister(self); 1038 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1039 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1040 for (dir = OUT; dir <= IN; dir++) { 1041 sce = &sc->sc_endpoints[i][dir]; 1042 if (sce->pipeh) 1043 usbd_abort_pipe(sce->pipeh); 1044 } 1045 } 1046 1047 mutex_enter(&sc->sc_lock); 1048 if (--sc->sc_refcnt >= 0) { 1049 /* Wake everyone */ 1050 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1051 cv_signal(&sc->sc_endpoints[i][IN].cv); 1052 /* Wait for processes to go away. */ 1053 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1054 } 1055 mutex_exit(&sc->sc_lock); 1056 1057 /* locate the major number */ 1058 maj = cdevsw_lookup_major(&ugen_cdevsw); 1059 1060 /* Nuke the vnodes for any open instances (calls close). */ 1061 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1062 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1063 1064 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1065 sc->sc_dev); 1066 1067 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1068 for (dir = OUT; dir <= IN; dir++) { 1069 sce = &sc->sc_endpoints[i][dir]; 1070 seldestroy(&sce->rsel); 1071 cv_destroy(&sce->cv); 1072 } 1073 } 1074 1075 cv_destroy(&sc->sc_detach_cv); 1076 mutex_destroy(&sc->sc_lock); 1077 1078 return (0); 1079 } 1080 1081 Static void 1082 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1083 { 1084 struct ugen_endpoint *sce = addr; 1085 struct ugen_softc *sc = sce->sc; 1086 u_int32_t count; 1087 u_char *ibuf; 1088 1089 if (status == USBD_CANCELLED) 1090 return; 1091 1092 if (status != USBD_NORMAL_COMPLETION) { 1093 DPRINTF(("ugenintr: status=%d\n", status)); 1094 if (status == USBD_STALLED) 1095 usbd_clear_endpoint_stall_async(sce->pipeh); 1096 return; 1097 } 1098 1099 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1100 ibuf = sce->ibuf; 1101 1102 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1103 xfer, status, count)); 1104 DPRINTFN(5, (" data = %02x %02x %02x\n", 1105 ibuf[0], ibuf[1], ibuf[2])); 1106 1107 (void)b_to_q(ibuf, count, &sce->q); 1108 1109 mutex_enter(&sc->sc_lock); 1110 if (sce->state & UGEN_ASLP) { 1111 sce->state &= ~UGEN_ASLP; 1112 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1113 cv_signal(&sce->cv); 1114 } 1115 mutex_exit(&sc->sc_lock); 1116 selnotify(&sce->rsel, 0, 0); 1117 } 1118 1119 Static void 1120 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1121 usbd_status status) 1122 { 1123 struct isoreq *req = addr; 1124 struct ugen_endpoint *sce = req->sce; 1125 struct ugen_softc *sc = sce->sc; 1126 u_int32_t count, n; 1127 int i, isize; 1128 1129 /* Return if we are aborting. */ 1130 if (status == USBD_CANCELLED) 1131 return; 1132 1133 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1134 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1135 (long)(req - sce->isoreqs), count)); 1136 1137 /* throw away oldest input if the buffer is full */ 1138 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1139 sce->cur += count; 1140 if(sce->cur >= sce->limit) 1141 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1142 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1143 count)); 1144 } 1145 1146 isize = UGETW(sce->edesc->wMaxPacketSize); 1147 for (i = 0; i < UGEN_NISORFRMS; i++) { 1148 u_int32_t actlen = req->sizes[i]; 1149 char const *tbuf = (char const *)req->dmabuf + isize * i; 1150 1151 /* copy data to buffer */ 1152 while (actlen > 0) { 1153 n = min(actlen, sce->limit - sce->fill); 1154 memcpy(sce->fill, tbuf, n); 1155 1156 tbuf += n; 1157 actlen -= n; 1158 sce->fill += n; 1159 if(sce->fill == sce->limit) 1160 sce->fill = sce->ibuf; 1161 } 1162 1163 /* setup size for next transfer */ 1164 req->sizes[i] = isize; 1165 } 1166 1167 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1168 USBD_NO_COPY, ugen_isoc_rintr); 1169 (void)usbd_transfer(xfer); 1170 1171 mutex_enter(&sc->sc_lock); 1172 if (sce->state & UGEN_ASLP) { 1173 sce->state &= ~UGEN_ASLP; 1174 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1175 cv_signal(&sce->cv); 1176 } 1177 mutex_exit(&sc->sc_lock); 1178 selnotify(&sce->rsel, 0, 0); 1179 } 1180 1181 Static void 1182 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1183 usbd_status status) 1184 { 1185 struct ugen_endpoint *sce = addr; 1186 struct ugen_softc *sc = sce->sc; 1187 u_int32_t count, n; 1188 char const *tbuf; 1189 usbd_status err; 1190 1191 /* Return if we are aborting. */ 1192 if (status == USBD_CANCELLED) 1193 return; 1194 1195 if (status != USBD_NORMAL_COMPLETION) { 1196 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1197 sce->state |= UGEN_RA_WB_STOP; 1198 if (status == USBD_STALLED) 1199 usbd_clear_endpoint_stall_async(sce->pipeh); 1200 return; 1201 } 1202 1203 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1204 1205 /* Keep track of how much is in the buffer. */ 1206 sce->ra_wb_used += count; 1207 1208 /* Copy data to buffer. */ 1209 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1210 n = min(count, sce->limit - sce->fill); 1211 memcpy(sce->fill, tbuf, n); 1212 tbuf += n; 1213 count -= n; 1214 sce->fill += n; 1215 if (sce->fill == sce->limit) 1216 sce->fill = sce->ibuf; 1217 if (count > 0) { 1218 memcpy(sce->fill, tbuf, count); 1219 sce->fill += count; 1220 } 1221 1222 /* Set up the next request if necessary. */ 1223 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1224 if (n > 0) { 1225 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1226 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1227 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1228 err = usbd_transfer(xfer); 1229 if (err != USBD_IN_PROGRESS) { 1230 printf("usbd_bulkra_intr: error=%d\n", err); 1231 /* 1232 * The transfer has not been queued. Setting STOP 1233 * will make us try again at the next read. 1234 */ 1235 sce->state |= UGEN_RA_WB_STOP; 1236 } 1237 } 1238 else 1239 sce->state |= UGEN_RA_WB_STOP; 1240 1241 mutex_enter(&sc->sc_lock); 1242 if (sce->state & UGEN_ASLP) { 1243 sce->state &= ~UGEN_ASLP; 1244 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1245 cv_signal(&sce->cv); 1246 } 1247 mutex_exit(&sc->sc_lock); 1248 selnotify(&sce->rsel, 0, 0); 1249 } 1250 1251 Static void 1252 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1253 usbd_status status) 1254 { 1255 struct ugen_endpoint *sce = addr; 1256 struct ugen_softc *sc = sce->sc; 1257 u_int32_t count, n; 1258 char *tbuf; 1259 usbd_status err; 1260 1261 /* Return if we are aborting. */ 1262 if (status == USBD_CANCELLED) 1263 return; 1264 1265 if (status != USBD_NORMAL_COMPLETION) { 1266 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1267 sce->state |= UGEN_RA_WB_STOP; 1268 if (status == USBD_STALLED) 1269 usbd_clear_endpoint_stall_async(sce->pipeh); 1270 return; 1271 } 1272 1273 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1274 1275 /* Keep track of how much is in the buffer. */ 1276 sce->ra_wb_used -= count; 1277 1278 /* Update buffer pointers. */ 1279 sce->cur += count; 1280 if (sce->cur >= sce->limit) 1281 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1282 1283 /* Set up next request if necessary. */ 1284 if (sce->ra_wb_used > 0) { 1285 /* copy data from buffer */ 1286 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1287 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1288 n = min(count, sce->limit - sce->cur); 1289 memcpy(tbuf, sce->cur, n); 1290 tbuf += n; 1291 if (count - n > 0) 1292 memcpy(tbuf, sce->ibuf, count - n); 1293 1294 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1295 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1296 err = usbd_transfer(xfer); 1297 if (err != USBD_IN_PROGRESS) { 1298 printf("usbd_bulkwb_intr: error=%d\n", err); 1299 /* 1300 * The transfer has not been queued. Setting STOP 1301 * will make us try again at the next write. 1302 */ 1303 sce->state |= UGEN_RA_WB_STOP; 1304 } 1305 } 1306 else 1307 sce->state |= UGEN_RA_WB_STOP; 1308 1309 mutex_enter(&sc->sc_lock); 1310 if (sce->state & UGEN_ASLP) { 1311 sce->state &= ~UGEN_ASLP; 1312 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1313 cv_signal(&sce->cv); 1314 } 1315 mutex_exit(&sc->sc_lock); 1316 selnotify(&sce->rsel, 0, 0); 1317 } 1318 1319 Static usbd_status 1320 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1321 { 1322 usbd_interface_handle iface; 1323 usb_endpoint_descriptor_t *ed; 1324 usbd_status err; 1325 struct ugen_endpoint *sce; 1326 u_int8_t niface, nendpt, endptno, endpt; 1327 int dir; 1328 1329 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1330 1331 err = usbd_interface_count(sc->sc_udev, &niface); 1332 if (err) 1333 return (err); 1334 if (ifaceidx < 0 || ifaceidx >= niface) 1335 return (USBD_INVAL); 1336 1337 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1338 if (err) 1339 return (err); 1340 err = usbd_endpoint_count(iface, &nendpt); 1341 if (err) 1342 return (err); 1343 1344 /* change setting */ 1345 err = usbd_set_interface(iface, altno); 1346 if (err) 1347 return (err); 1348 1349 err = usbd_endpoint_count(iface, &nendpt); 1350 if (err) 1351 return (err); 1352 1353 ugen_clear_endpoints(sc); 1354 1355 for (endptno = 0; endptno < nendpt; endptno++) { 1356 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1357 KASSERT(ed != NULL); 1358 endpt = ed->bEndpointAddress; 1359 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1360 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1361 sce->sc = sc; 1362 sce->edesc = ed; 1363 sce->iface = iface; 1364 } 1365 return (0); 1366 } 1367 1368 /* Retrieve a complete descriptor for a certain device and index. */ 1369 Static usb_config_descriptor_t * 1370 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1371 { 1372 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1373 int len; 1374 usbd_status err; 1375 1376 if (index == USB_CURRENT_CONFIG_INDEX) { 1377 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1378 len = UGETW(tdesc->wTotalLength); 1379 if (lenp) 1380 *lenp = len; 1381 cdesc = malloc(len, M_TEMP, M_WAITOK); 1382 memcpy(cdesc, tdesc, len); 1383 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1384 } else { 1385 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1386 if (err) 1387 return (0); 1388 len = UGETW(cdescr.wTotalLength); 1389 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1390 if (lenp) 1391 *lenp = len; 1392 cdesc = malloc(len, M_TEMP, M_WAITOK); 1393 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1394 if (err) { 1395 free(cdesc, M_TEMP); 1396 return (0); 1397 } 1398 } 1399 return (cdesc); 1400 } 1401 1402 Static int 1403 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1404 { 1405 usbd_interface_handle iface; 1406 usbd_status err; 1407 1408 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1409 if (err) 1410 return (-1); 1411 return (usbd_get_interface_altindex(iface)); 1412 } 1413 1414 Static int 1415 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1416 void *addr, int flag, struct lwp *l) 1417 { 1418 struct ugen_endpoint *sce; 1419 usbd_status err; 1420 usbd_interface_handle iface; 1421 struct usb_config_desc *cd; 1422 usb_config_descriptor_t *cdesc; 1423 struct usb_interface_desc *id; 1424 usb_interface_descriptor_t *idesc; 1425 struct usb_endpoint_desc *ed; 1426 usb_endpoint_descriptor_t *edesc; 1427 struct usb_alt_interface *ai; 1428 struct usb_string_desc *si; 1429 u_int8_t conf, alt; 1430 1431 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1432 if (sc->sc_dying) 1433 return (EIO); 1434 1435 switch (cmd) { 1436 case FIONBIO: 1437 /* All handled in the upper FS layer. */ 1438 return (0); 1439 case USB_SET_SHORT_XFER: 1440 if (endpt == USB_CONTROL_ENDPOINT) 1441 return (EINVAL); 1442 /* This flag only affects read */ 1443 sce = &sc->sc_endpoints[endpt][IN]; 1444 if (sce == NULL || sce->pipeh == NULL) 1445 return (EINVAL); 1446 if (*(int *)addr) 1447 sce->state |= UGEN_SHORT_OK; 1448 else 1449 sce->state &= ~UGEN_SHORT_OK; 1450 return (0); 1451 case USB_SET_TIMEOUT: 1452 sce = &sc->sc_endpoints[endpt][IN]; 1453 if (sce == NULL 1454 /* XXX this shouldn't happen, but the distinction between 1455 input and output pipes isn't clear enough. 1456 || sce->pipeh == NULL */ 1457 ) 1458 return (EINVAL); 1459 sce->timeout = *(int *)addr; 1460 return (0); 1461 case USB_SET_BULK_RA: 1462 if (endpt == USB_CONTROL_ENDPOINT) 1463 return (EINVAL); 1464 sce = &sc->sc_endpoints[endpt][IN]; 1465 if (sce == NULL || sce->pipeh == NULL) 1466 return (EINVAL); 1467 edesc = sce->edesc; 1468 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1469 return (EINVAL); 1470 1471 if (*(int *)addr) { 1472 /* Only turn RA on if it's currently off. */ 1473 if (sce->state & UGEN_BULK_RA) 1474 return (0); 1475 1476 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1477 /* shouldn't happen */ 1478 return (EINVAL); 1479 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1480 if (sce->ra_wb_xfer == NULL) 1481 return (ENOMEM); 1482 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1483 /* 1484 * Set up a dmabuf because we reuse the xfer with 1485 * the same (max) request length like isoc. 1486 */ 1487 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1488 sce->ra_wb_xferlen) == 0) { 1489 usbd_free_xfer(sce->ra_wb_xfer); 1490 return (ENOMEM); 1491 } 1492 sce->ibuf = malloc(sce->ra_wb_bufsize, 1493 M_USBDEV, M_WAITOK); 1494 sce->fill = sce->cur = sce->ibuf; 1495 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1496 sce->ra_wb_used = 0; 1497 sce->state |= UGEN_BULK_RA; 1498 sce->state &= ~UGEN_RA_WB_STOP; 1499 /* Now start reading. */ 1500 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1501 NULL, 1502 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1503 USBD_NO_COPY, USBD_NO_TIMEOUT, 1504 ugen_bulkra_intr); 1505 err = usbd_transfer(sce->ra_wb_xfer); 1506 if (err != USBD_IN_PROGRESS) { 1507 sce->state &= ~UGEN_BULK_RA; 1508 free(sce->ibuf, M_USBDEV); 1509 sce->ibuf = NULL; 1510 usbd_free_xfer(sce->ra_wb_xfer); 1511 return (EIO); 1512 } 1513 } else { 1514 /* Only turn RA off if it's currently on. */ 1515 if (!(sce->state & UGEN_BULK_RA)) 1516 return (0); 1517 1518 sce->state &= ~UGEN_BULK_RA; 1519 usbd_abort_pipe(sce->pipeh); 1520 usbd_free_xfer(sce->ra_wb_xfer); 1521 /* 1522 * XXX Discard whatever's in the buffer, but we 1523 * should keep it around and drain the buffer 1524 * instead. 1525 */ 1526 free(sce->ibuf, M_USBDEV); 1527 sce->ibuf = NULL; 1528 } 1529 return (0); 1530 case USB_SET_BULK_WB: 1531 if (endpt == USB_CONTROL_ENDPOINT) 1532 return (EINVAL); 1533 sce = &sc->sc_endpoints[endpt][OUT]; 1534 if (sce == NULL || sce->pipeh == NULL) 1535 return (EINVAL); 1536 edesc = sce->edesc; 1537 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1538 return (EINVAL); 1539 1540 if (*(int *)addr) { 1541 /* Only turn WB on if it's currently off. */ 1542 if (sce->state & UGEN_BULK_WB) 1543 return (0); 1544 1545 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1546 /* shouldn't happen */ 1547 return (EINVAL); 1548 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1549 if (sce->ra_wb_xfer == NULL) 1550 return (ENOMEM); 1551 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1552 /* 1553 * Set up a dmabuf because we reuse the xfer with 1554 * the same (max) request length like isoc. 1555 */ 1556 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1557 sce->ra_wb_xferlen) == 0) { 1558 usbd_free_xfer(sce->ra_wb_xfer); 1559 return (ENOMEM); 1560 } 1561 sce->ibuf = malloc(sce->ra_wb_bufsize, 1562 M_USBDEV, M_WAITOK); 1563 sce->fill = sce->cur = sce->ibuf; 1564 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1565 sce->ra_wb_used = 0; 1566 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1567 } else { 1568 /* Only turn WB off if it's currently on. */ 1569 if (!(sce->state & UGEN_BULK_WB)) 1570 return (0); 1571 1572 sce->state &= ~UGEN_BULK_WB; 1573 /* 1574 * XXX Discard whatever's in the buffer, but we 1575 * should keep it around and keep writing to 1576 * drain the buffer instead. 1577 */ 1578 usbd_abort_pipe(sce->pipeh); 1579 usbd_free_xfer(sce->ra_wb_xfer); 1580 free(sce->ibuf, M_USBDEV); 1581 sce->ibuf = NULL; 1582 } 1583 return (0); 1584 case USB_SET_BULK_RA_OPT: 1585 case USB_SET_BULK_WB_OPT: 1586 { 1587 struct usb_bulk_ra_wb_opt *opt; 1588 1589 if (endpt == USB_CONTROL_ENDPOINT) 1590 return (EINVAL); 1591 opt = (struct usb_bulk_ra_wb_opt *)addr; 1592 if (cmd == USB_SET_BULK_RA_OPT) 1593 sce = &sc->sc_endpoints[endpt][IN]; 1594 else 1595 sce = &sc->sc_endpoints[endpt][OUT]; 1596 if (sce == NULL || sce->pipeh == NULL) 1597 return (EINVAL); 1598 if (opt->ra_wb_buffer_size < 1 || 1599 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1600 opt->ra_wb_request_size < 1 || 1601 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1602 return (EINVAL); 1603 /* 1604 * XXX These changes do not take effect until the 1605 * next time RA/WB mode is enabled but they ought to 1606 * take effect immediately. 1607 */ 1608 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1609 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1610 return (0); 1611 } 1612 default: 1613 break; 1614 } 1615 1616 if (endpt != USB_CONTROL_ENDPOINT) 1617 return (EINVAL); 1618 1619 switch (cmd) { 1620 #ifdef UGEN_DEBUG 1621 case USB_SETDEBUG: 1622 ugendebug = *(int *)addr; 1623 break; 1624 #endif 1625 case USB_GET_CONFIG: 1626 err = usbd_get_config(sc->sc_udev, &conf); 1627 if (err) 1628 return (EIO); 1629 *(int *)addr = conf; 1630 break; 1631 case USB_SET_CONFIG: 1632 if (!(flag & FWRITE)) 1633 return (EPERM); 1634 err = ugen_set_config(sc, *(int *)addr); 1635 switch (err) { 1636 case USBD_NORMAL_COMPLETION: 1637 break; 1638 case USBD_IN_USE: 1639 return (EBUSY); 1640 default: 1641 return (EIO); 1642 } 1643 break; 1644 case USB_GET_ALTINTERFACE: 1645 ai = (struct usb_alt_interface *)addr; 1646 err = usbd_device2interface_handle(sc->sc_udev, 1647 ai->uai_interface_index, &iface); 1648 if (err) 1649 return (EINVAL); 1650 idesc = usbd_get_interface_descriptor(iface); 1651 if (idesc == NULL) 1652 return (EIO); 1653 ai->uai_alt_no = idesc->bAlternateSetting; 1654 break; 1655 case USB_SET_ALTINTERFACE: 1656 if (!(flag & FWRITE)) 1657 return (EPERM); 1658 ai = (struct usb_alt_interface *)addr; 1659 err = usbd_device2interface_handle(sc->sc_udev, 1660 ai->uai_interface_index, &iface); 1661 if (err) 1662 return (EINVAL); 1663 err = ugen_set_interface(sc, ai->uai_interface_index, 1664 ai->uai_alt_no); 1665 if (err) 1666 return (EINVAL); 1667 break; 1668 case USB_GET_NO_ALT: 1669 ai = (struct usb_alt_interface *)addr; 1670 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1671 if (cdesc == NULL) 1672 return (EINVAL); 1673 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1674 if (idesc == NULL) { 1675 free(cdesc, M_TEMP); 1676 return (EINVAL); 1677 } 1678 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1679 idesc->bInterfaceNumber); 1680 free(cdesc, M_TEMP); 1681 break; 1682 case USB_GET_DEVICE_DESC: 1683 *(usb_device_descriptor_t *)addr = 1684 *usbd_get_device_descriptor(sc->sc_udev); 1685 break; 1686 case USB_GET_CONFIG_DESC: 1687 cd = (struct usb_config_desc *)addr; 1688 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1689 if (cdesc == NULL) 1690 return (EINVAL); 1691 cd->ucd_desc = *cdesc; 1692 free(cdesc, M_TEMP); 1693 break; 1694 case USB_GET_INTERFACE_DESC: 1695 id = (struct usb_interface_desc *)addr; 1696 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1697 if (cdesc == NULL) 1698 return (EINVAL); 1699 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1700 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1701 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1702 else 1703 alt = id->uid_alt_index; 1704 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1705 if (idesc == NULL) { 1706 free(cdesc, M_TEMP); 1707 return (EINVAL); 1708 } 1709 id->uid_desc = *idesc; 1710 free(cdesc, M_TEMP); 1711 break; 1712 case USB_GET_ENDPOINT_DESC: 1713 ed = (struct usb_endpoint_desc *)addr; 1714 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1715 if (cdesc == NULL) 1716 return (EINVAL); 1717 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1718 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1719 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1720 else 1721 alt = ed->ued_alt_index; 1722 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1723 alt, ed->ued_endpoint_index); 1724 if (edesc == NULL) { 1725 free(cdesc, M_TEMP); 1726 return (EINVAL); 1727 } 1728 ed->ued_desc = *edesc; 1729 free(cdesc, M_TEMP); 1730 break; 1731 case USB_GET_FULL_DESC: 1732 { 1733 int len; 1734 struct iovec iov; 1735 struct uio uio; 1736 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1737 int error; 1738 1739 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1740 if (cdesc == NULL) 1741 return (EINVAL); 1742 if (len > fd->ufd_size) 1743 len = fd->ufd_size; 1744 iov.iov_base = (void *)fd->ufd_data; 1745 iov.iov_len = len; 1746 uio.uio_iov = &iov; 1747 uio.uio_iovcnt = 1; 1748 uio.uio_resid = len; 1749 uio.uio_offset = 0; 1750 uio.uio_rw = UIO_READ; 1751 uio.uio_vmspace = l->l_proc->p_vmspace; 1752 error = uiomove((void *)cdesc, len, &uio); 1753 free(cdesc, M_TEMP); 1754 return (error); 1755 } 1756 case USB_GET_STRING_DESC: { 1757 int len; 1758 si = (struct usb_string_desc *)addr; 1759 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1760 si->usd_language_id, &si->usd_desc, &len); 1761 if (err) 1762 return (EINVAL); 1763 break; 1764 } 1765 case USB_DO_REQUEST: 1766 { 1767 struct usb_ctl_request *ur = (void *)addr; 1768 int len = UGETW(ur->ucr_request.wLength); 1769 struct iovec iov; 1770 struct uio uio; 1771 void *ptr = 0; 1772 usbd_status xerr; 1773 int error = 0; 1774 1775 if (!(flag & FWRITE)) 1776 return (EPERM); 1777 /* Avoid requests that would damage the bus integrity. */ 1778 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1779 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1780 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1781 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1782 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1783 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1784 return (EINVAL); 1785 1786 if (len < 0 || len > 32767) 1787 return (EINVAL); 1788 if (len != 0) { 1789 iov.iov_base = (void *)ur->ucr_data; 1790 iov.iov_len = len; 1791 uio.uio_iov = &iov; 1792 uio.uio_iovcnt = 1; 1793 uio.uio_resid = len; 1794 uio.uio_offset = 0; 1795 uio.uio_rw = 1796 ur->ucr_request.bmRequestType & UT_READ ? 1797 UIO_READ : UIO_WRITE; 1798 uio.uio_vmspace = l->l_proc->p_vmspace; 1799 ptr = malloc(len, M_TEMP, M_WAITOK); 1800 if (uio.uio_rw == UIO_WRITE) { 1801 error = uiomove(ptr, len, &uio); 1802 if (error) 1803 goto ret; 1804 } 1805 } 1806 sce = &sc->sc_endpoints[endpt][IN]; 1807 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1808 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1809 if (xerr) { 1810 error = EIO; 1811 goto ret; 1812 } 1813 if (len != 0) { 1814 if (uio.uio_rw == UIO_READ) { 1815 error = uiomove(ptr, len, &uio); 1816 if (error) 1817 goto ret; 1818 } 1819 } 1820 ret: 1821 if (ptr) 1822 free(ptr, M_TEMP); 1823 return (error); 1824 } 1825 case USB_GET_DEVICEINFO: 1826 usbd_fill_deviceinfo(sc->sc_udev, 1827 (struct usb_device_info *)addr, 0); 1828 break; 1829 #ifdef COMPAT_30 1830 case USB_GET_DEVICEINFO_OLD: 1831 usbd_fill_deviceinfo_old(sc->sc_udev, 1832 (struct usb_device_info_old *)addr, 0); 1833 1834 break; 1835 #endif 1836 default: 1837 return (EINVAL); 1838 } 1839 return (0); 1840 } 1841 1842 int 1843 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1844 { 1845 int endpt = UGENENDPOINT(dev); 1846 struct ugen_softc *sc; 1847 int error; 1848 1849 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1850 if (sc == NULL) 1851 return ENXIO; 1852 1853 sc->sc_refcnt++; 1854 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1855 if (--sc->sc_refcnt < 0) 1856 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1857 return (error); 1858 } 1859 1860 int 1861 ugenpoll(dev_t dev, int events, struct lwp *l) 1862 { 1863 struct ugen_softc *sc; 1864 struct ugen_endpoint *sce_in, *sce_out; 1865 int revents = 0; 1866 1867 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1868 if (sc == NULL) 1869 return ENXIO; 1870 1871 if (sc->sc_dying) 1872 return (POLLHUP); 1873 1874 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1875 return ENODEV; 1876 1877 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1878 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1879 if (sce_in == NULL && sce_out == NULL) 1880 return (POLLERR); 1881 #ifdef DIAGNOSTIC 1882 if (!sce_in->edesc && !sce_out->edesc) { 1883 printf("ugenpoll: no edesc\n"); 1884 return (POLLERR); 1885 } 1886 /* It's possible to have only one pipe open. */ 1887 if (!sce_in->pipeh && !sce_out->pipeh) { 1888 printf("ugenpoll: no pipe\n"); 1889 return (POLLERR); 1890 } 1891 #endif 1892 1893 mutex_enter(&sc->sc_lock); 1894 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1895 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1896 case UE_INTERRUPT: 1897 if (sce_in->q.c_cc > 0) 1898 revents |= events & (POLLIN | POLLRDNORM); 1899 else 1900 selrecord(l, &sce_in->rsel); 1901 break; 1902 case UE_ISOCHRONOUS: 1903 if (sce_in->cur != sce_in->fill) 1904 revents |= events & (POLLIN | POLLRDNORM); 1905 else 1906 selrecord(l, &sce_in->rsel); 1907 break; 1908 case UE_BULK: 1909 if (sce_in->state & UGEN_BULK_RA) { 1910 if (sce_in->ra_wb_used > 0) 1911 revents |= events & 1912 (POLLIN | POLLRDNORM); 1913 else 1914 selrecord(l, &sce_in->rsel); 1915 break; 1916 } 1917 /* 1918 * We have no easy way of determining if a read will 1919 * yield any data or a write will happen. 1920 * Pretend they will. 1921 */ 1922 revents |= events & (POLLIN | POLLRDNORM); 1923 break; 1924 default: 1925 break; 1926 } 1927 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1928 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1929 case UE_INTERRUPT: 1930 case UE_ISOCHRONOUS: 1931 /* XXX unimplemented */ 1932 break; 1933 case UE_BULK: 1934 if (sce_out->state & UGEN_BULK_WB) { 1935 if (sce_out->ra_wb_used < 1936 sce_out->limit - sce_out->ibuf) 1937 revents |= events & 1938 (POLLOUT | POLLWRNORM); 1939 else 1940 selrecord(l, &sce_out->rsel); 1941 break; 1942 } 1943 /* 1944 * We have no easy way of determining if a read will 1945 * yield any data or a write will happen. 1946 * Pretend they will. 1947 */ 1948 revents |= events & (POLLOUT | POLLWRNORM); 1949 break; 1950 default: 1951 break; 1952 } 1953 1954 mutex_exit(&sc->sc_lock); 1955 1956 return (revents); 1957 } 1958 1959 static void 1960 filt_ugenrdetach(struct knote *kn) 1961 { 1962 struct ugen_endpoint *sce = kn->kn_hook; 1963 struct ugen_softc *sc = sce->sc; 1964 1965 mutex_enter(&sc->sc_lock); 1966 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1967 mutex_exit(&sc->sc_lock); 1968 } 1969 1970 static int 1971 filt_ugenread_intr(struct knote *kn, long hint) 1972 { 1973 struct ugen_endpoint *sce = kn->kn_hook; 1974 1975 kn->kn_data = sce->q.c_cc; 1976 return (kn->kn_data > 0); 1977 } 1978 1979 static int 1980 filt_ugenread_isoc(struct knote *kn, long hint) 1981 { 1982 struct ugen_endpoint *sce = kn->kn_hook; 1983 1984 if (sce->cur == sce->fill) 1985 return (0); 1986 1987 if (sce->cur < sce->fill) 1988 kn->kn_data = sce->fill - sce->cur; 1989 else 1990 kn->kn_data = (sce->limit - sce->cur) + 1991 (sce->fill - sce->ibuf); 1992 1993 return (1); 1994 } 1995 1996 static int 1997 filt_ugenread_bulk(struct knote *kn, long hint) 1998 { 1999 struct ugen_endpoint *sce = kn->kn_hook; 2000 2001 if (!(sce->state & UGEN_BULK_RA)) 2002 /* 2003 * We have no easy way of determining if a read will 2004 * yield any data or a write will happen. 2005 * So, emulate "seltrue". 2006 */ 2007 return (filt_seltrue(kn, hint)); 2008 2009 if (sce->ra_wb_used == 0) 2010 return (0); 2011 2012 kn->kn_data = sce->ra_wb_used; 2013 2014 return (1); 2015 } 2016 2017 static int 2018 filt_ugenwrite_bulk(struct knote *kn, long hint) 2019 { 2020 struct ugen_endpoint *sce = kn->kn_hook; 2021 2022 if (!(sce->state & UGEN_BULK_WB)) 2023 /* 2024 * We have no easy way of determining if a read will 2025 * yield any data or a write will happen. 2026 * So, emulate "seltrue". 2027 */ 2028 return (filt_seltrue(kn, hint)); 2029 2030 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2031 return (0); 2032 2033 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2034 2035 return (1); 2036 } 2037 2038 static const struct filterops ugenread_intr_filtops = 2039 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2040 2041 static const struct filterops ugenread_isoc_filtops = 2042 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2043 2044 static const struct filterops ugenread_bulk_filtops = 2045 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2046 2047 static const struct filterops ugenwrite_bulk_filtops = 2048 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2049 2050 int 2051 ugenkqfilter(dev_t dev, struct knote *kn) 2052 { 2053 struct ugen_softc *sc; 2054 struct ugen_endpoint *sce; 2055 struct klist *klist; 2056 2057 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2058 if (sc == NULL) 2059 return ENXIO; 2060 2061 if (sc->sc_dying) 2062 return (ENXIO); 2063 2064 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2065 return ENODEV; 2066 2067 switch (kn->kn_filter) { 2068 case EVFILT_READ: 2069 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2070 if (sce == NULL) 2071 return (EINVAL); 2072 2073 klist = &sce->rsel.sel_klist; 2074 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2075 case UE_INTERRUPT: 2076 kn->kn_fop = &ugenread_intr_filtops; 2077 break; 2078 case UE_ISOCHRONOUS: 2079 kn->kn_fop = &ugenread_isoc_filtops; 2080 break; 2081 case UE_BULK: 2082 kn->kn_fop = &ugenread_bulk_filtops; 2083 break; 2084 default: 2085 return (EINVAL); 2086 } 2087 break; 2088 2089 case EVFILT_WRITE: 2090 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2091 if (sce == NULL) 2092 return (EINVAL); 2093 2094 klist = &sce->rsel.sel_klist; 2095 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2096 case UE_INTERRUPT: 2097 case UE_ISOCHRONOUS: 2098 /* XXX poll doesn't support this */ 2099 return (EINVAL); 2100 2101 case UE_BULK: 2102 kn->kn_fop = &ugenwrite_bulk_filtops; 2103 break; 2104 default: 2105 return (EINVAL); 2106 } 2107 break; 2108 2109 default: 2110 return (EINVAL); 2111 } 2112 2113 kn->kn_hook = sce; 2114 2115 mutex_enter(&sc->sc_lock); 2116 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2117 mutex_exit(&sc->sc_lock); 2118 2119 return (0); 2120 } 2121
Indexes created Tue Oct 21 19:09:51 GMT 2025