ugen.c revision 1.124
1 /* $NetBSD: ugen.c,v 1.124 2014/07/25 08:10:39 dholland 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 2014/07/25 08:10:39 dholland 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 int 271 ugen_set_config(struct ugen_softc *sc, int configno) 272 { 273 usbd_device_handle dev = sc->sc_udev; 274 usb_config_descriptor_t *cdesc; 275 usbd_interface_handle iface; 276 usb_endpoint_descriptor_t *ed; 277 struct ugen_endpoint *sce; 278 u_int8_t niface, nendpt; 279 int ifaceno, endptno, endpt; 280 usbd_status err; 281 int dir, i; 282 283 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 284 device_xname(sc->sc_dev), configno, sc)); 285 286 /* 287 * We start at 1, not 0, because we don't care whether the 288 * control endpoint is open or not. It is always present. 289 */ 290 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 291 if (sc->sc_is_open[endptno]) { 292 DPRINTFN(1, 293 ("ugen_set_config: %s - endpoint %d is open\n", 294 device_xname(sc->sc_dev), endptno)); 295 return (USBD_IN_USE); 296 } 297 298 /* Avoid setting the current value. */ 299 cdesc = usbd_get_config_descriptor(dev); 300 if (!cdesc || cdesc->bConfigurationValue != configno) { 301 err = usbd_set_config_no(dev, configno, 1); 302 if (err) 303 return (err); 304 } 305 306 err = usbd_interface_count(dev, &niface); 307 if (err) 308 return (err); 309 310 /* Clear out the old info, but leave the selinfo and cv initialised. */ 311 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 312 for (dir = OUT; dir <= IN; dir++) { 313 sce = &sc->sc_endpoints[i][dir]; 314 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 315 } 316 } 317 318 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 319 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 320 err = usbd_device2interface_handle(dev, ifaceno, &iface); 321 if (err) 322 return (err); 323 err = usbd_endpoint_count(iface, &nendpt); 324 if (err) 325 return (err); 326 for (endptno = 0; endptno < nendpt; endptno++) { 327 ed = usbd_interface2endpoint_descriptor(iface,endptno); 328 KASSERT(ed != NULL); 329 endpt = ed->bEndpointAddress; 330 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 331 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 332 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 333 "(%d,%d), sce=%p\n", 334 endptno, endpt, UE_GET_ADDR(endpt), 335 UE_GET_DIR(endpt), sce)); 336 sce->sc = sc; 337 sce->edesc = ed; 338 sce->iface = iface; 339 } 340 } 341 return (USBD_NORMAL_COMPLETION); 342 } 343 344 int 345 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 346 { 347 struct ugen_softc *sc; 348 int unit = UGENUNIT(dev); 349 int endpt = UGENENDPOINT(dev); 350 usb_endpoint_descriptor_t *edesc; 351 struct ugen_endpoint *sce; 352 int dir, isize; 353 usbd_status err; 354 usbd_xfer_handle xfer; 355 void *tbuf; 356 int i, j; 357 358 sc = device_lookup_private(&ugen_cd, unit); 359 if (sc == NULL) 360 return ENXIO; 361 362 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 363 flag, mode, unit, endpt)); 364 365 if (sc == NULL || sc->sc_dying) 366 return (ENXIO); 367 368 /* The control endpoint allows multiple opens. */ 369 if (endpt == USB_CONTROL_ENDPOINT) { 370 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 371 return (0); 372 } 373 374 if (sc->sc_is_open[endpt]) 375 return (EBUSY); 376 377 /* Make sure there are pipes for all directions. */ 378 for (dir = OUT; dir <= IN; dir++) { 379 if (flag & (dir == OUT ? FWRITE : FREAD)) { 380 sce = &sc->sc_endpoints[endpt][dir]; 381 if (sce == 0 || sce->edesc == 0) 382 return (ENXIO); 383 } 384 } 385 386 /* Actually open the pipes. */ 387 /* XXX Should back out properly if it fails. */ 388 for (dir = OUT; dir <= IN; dir++) { 389 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 390 continue; 391 sce = &sc->sc_endpoints[endpt][dir]; 392 sce->state = 0; 393 sce->timeout = USBD_NO_TIMEOUT; 394 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 395 sc, endpt, dir, sce)); 396 edesc = sce->edesc; 397 switch (edesc->bmAttributes & UE_XFERTYPE) { 398 case UE_INTERRUPT: 399 if (dir == OUT) { 400 err = usbd_open_pipe(sce->iface, 401 edesc->bEndpointAddress, 0, &sce->pipeh); 402 if (err) 403 return (EIO); 404 break; 405 } 406 isize = UGETW(edesc->wMaxPacketSize); 407 if (isize == 0) /* shouldn't happen */ 408 return (EINVAL); 409 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 410 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 411 endpt, isize)); 412 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 413 free(sce->ibuf, M_USBDEV); 414 sce->ibuf = NULL; 415 return (ENOMEM); 416 } 417 err = usbd_open_pipe_intr(sce->iface, 418 edesc->bEndpointAddress, 419 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 420 sce->ibuf, isize, ugenintr, 421 USBD_DEFAULT_INTERVAL); 422 if (err) { 423 clfree(&sce->q); 424 free(sce->ibuf, M_USBDEV); 425 sce->ibuf = NULL; 426 return (EIO); 427 } 428 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 429 break; 430 case UE_BULK: 431 err = usbd_open_pipe(sce->iface, 432 edesc->bEndpointAddress, 0, &sce->pipeh); 433 if (err) 434 return (EIO); 435 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 436 /* 437 * Use request size for non-RA/WB transfers 438 * as the default. 439 */ 440 sce->ra_wb_reqsize = UGEN_BBSIZE; 441 break; 442 case UE_ISOCHRONOUS: 443 if (dir == OUT) 444 return (EINVAL); 445 isize = UGETW(edesc->wMaxPacketSize); 446 if (isize == 0) /* shouldn't happen */ 447 return (EINVAL); 448 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 449 M_USBDEV, M_WAITOK); 450 sce->cur = sce->fill = sce->ibuf; 451 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 452 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 453 endpt, isize)); 454 err = usbd_open_pipe(sce->iface, 455 edesc->bEndpointAddress, 0, &sce->pipeh); 456 if (err) { 457 free(sce->ibuf, M_USBDEV); 458 sce->ibuf = NULL; 459 return (EIO); 460 } 461 for(i = 0; i < UGEN_NISOREQS; ++i) { 462 sce->isoreqs[i].sce = sce; 463 xfer = usbd_alloc_xfer(sc->sc_udev); 464 if (xfer == 0) 465 goto bad; 466 sce->isoreqs[i].xfer = xfer; 467 tbuf = usbd_alloc_buffer 468 (xfer, isize * UGEN_NISORFRMS); 469 if (tbuf == 0) { 470 i++; 471 goto bad; 472 } 473 sce->isoreqs[i].dmabuf = tbuf; 474 for(j = 0; j < UGEN_NISORFRMS; ++j) 475 sce->isoreqs[i].sizes[j] = isize; 476 usbd_setup_isoc_xfer 477 (xfer, sce->pipeh, &sce->isoreqs[i], 478 sce->isoreqs[i].sizes, 479 UGEN_NISORFRMS, USBD_NO_COPY, 480 ugen_isoc_rintr); 481 (void)usbd_transfer(xfer); 482 } 483 DPRINTFN(5, ("ugenopen: isoc open done\n")); 484 break; 485 bad: 486 while (--i >= 0) /* implicit buffer free */ 487 usbd_free_xfer(sce->isoreqs[i].xfer); 488 usbd_close_pipe(sce->pipeh); 489 sce->pipeh = NULL; 490 free(sce->ibuf, M_USBDEV); 491 sce->ibuf = NULL; 492 return (ENOMEM); 493 case UE_CONTROL: 494 sce->timeout = USBD_DEFAULT_TIMEOUT; 495 return (EINVAL); 496 } 497 } 498 sc->sc_is_open[endpt] = 1; 499 return (0); 500 } 501 502 int 503 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 504 { 505 int endpt = UGENENDPOINT(dev); 506 struct ugen_softc *sc; 507 struct ugen_endpoint *sce; 508 int dir; 509 int i; 510 511 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 512 if (sc == NULL) 513 return ENXIO; 514 515 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 516 flag, mode, UGENUNIT(dev), endpt)); 517 518 #ifdef DIAGNOSTIC 519 if (!sc->sc_is_open[endpt]) { 520 printf("ugenclose: not open\n"); 521 return (EINVAL); 522 } 523 #endif 524 525 if (endpt == USB_CONTROL_ENDPOINT) { 526 DPRINTFN(5, ("ugenclose: close control\n")); 527 sc->sc_is_open[endpt] = 0; 528 return (0); 529 } 530 531 for (dir = OUT; dir <= IN; dir++) { 532 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 533 continue; 534 sce = &sc->sc_endpoints[endpt][dir]; 535 if (sce == NULL || sce->pipeh == NULL) 536 continue; 537 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 538 endpt, dir, sce)); 539 540 usbd_abort_pipe(sce->pipeh); 541 usbd_close_pipe(sce->pipeh); 542 sce->pipeh = NULL; 543 544 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 545 case UE_INTERRUPT: 546 ndflush(&sce->q, sce->q.c_cc); 547 clfree(&sce->q); 548 break; 549 case UE_ISOCHRONOUS: 550 for (i = 0; i < UGEN_NISOREQS; ++i) 551 usbd_free_xfer(sce->isoreqs[i].xfer); 552 break; 553 case UE_BULK: 554 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 555 /* ibuf freed below */ 556 usbd_free_xfer(sce->ra_wb_xfer); 557 break; 558 default: 559 break; 560 } 561 562 if (sce->ibuf != NULL) { 563 free(sce->ibuf, M_USBDEV); 564 sce->ibuf = NULL; 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 error = 0; 580 581 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 582 583 if (sc->sc_dying) 584 return (EIO); 585 586 if (endpt == USB_CONTROL_ENDPOINT) 587 return (ENODEV); 588 589 #ifdef DIAGNOSTIC 590 if (sce->edesc == NULL) { 591 printf("ugenread: no edesc\n"); 592 return (EIO); 593 } 594 if (sce->pipeh == NULL) { 595 printf("ugenread: no pipe\n"); 596 return (EIO); 597 } 598 #endif 599 600 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 601 case UE_INTERRUPT: 602 /* Block until activity occurred. */ 603 mutex_enter(&sc->sc_lock); 604 while (sce->q.c_cc == 0) { 605 if (flag & IO_NDELAY) { 606 mutex_exit(&sc->sc_lock); 607 return (EWOULDBLOCK); 608 } 609 sce->state |= UGEN_ASLP; 610 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 611 /* "ugenri" */ 612 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 613 mstohz(sce->timeout)); 614 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 615 if (sc->sc_dying) 616 error = EIO; 617 if (error) { 618 sce->state &= ~UGEN_ASLP; 619 break; 620 } 621 } 622 mutex_exit(&sc->sc_lock); 623 624 /* Transfer as many chunks as possible. */ 625 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 626 n = min(sce->q.c_cc, uio->uio_resid); 627 if (n > sizeof(sc->sc_buffer)) 628 n = sizeof(sc->sc_buffer); 629 630 /* Remove a small chunk from the input queue. */ 631 q_to_b(&sce->q, sc->sc_buffer, n); 632 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 633 634 /* Copy the data to the user process. */ 635 error = uiomove(sc->sc_buffer, n, uio); 636 if (error) 637 break; 638 } 639 break; 640 case UE_BULK: 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 mutex_enter(&sc->sc_lock); 647 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 648 mutex_exit(&sc->sc_lock); 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 /* "ugenrb" */ 658 error = cv_timedwait_sig(&sce->cv, 659 &sc->sc_lock, mstohz(sce->timeout)); 660 DPRINTFN(5, 661 ("ugenread: woke, error=%d\n", 662 error)); 663 if (sc->sc_dying) 664 error = EIO; 665 if (error) { 666 sce->state &= ~UGEN_ASLP; 667 break; 668 } 669 } 670 671 /* Copy data to the process. */ 672 while (uio->uio_resid > 0 673 && sce->ra_wb_used > 0) { 674 n = min(uio->uio_resid, 675 sce->ra_wb_used); 676 n = min(n, sce->limit - sce->cur); 677 error = uiomove(sce->cur, n, uio); 678 if (error) 679 break; 680 sce->cur += n; 681 sce->ra_wb_used -= n; 682 if (sce->cur == sce->limit) 683 sce->cur = sce->ibuf; 684 } 685 686 /* 687 * If the transfers stopped because the 688 * buffer was full, restart them. 689 */ 690 if (sce->state & UGEN_RA_WB_STOP && 691 sce->ra_wb_used < sce->limit - sce->ibuf) { 692 n = (sce->limit - sce->ibuf) 693 - sce->ra_wb_used; 694 usbd_setup_xfer(xfer, 695 sce->pipeh, sce, NULL, 696 min(n, sce->ra_wb_xferlen), 697 USBD_NO_COPY, USBD_NO_TIMEOUT, 698 ugen_bulkra_intr); 699 sce->state &= ~UGEN_RA_WB_STOP; 700 err = usbd_transfer(xfer); 701 if (err != USBD_IN_PROGRESS) 702 /* 703 * The transfer has not been 704 * queued. Setting STOP 705 * will make us try 706 * again at the next read. 707 */ 708 sce->state |= UGEN_RA_WB_STOP; 709 } 710 } 711 mutex_exit(&sc->sc_lock); 712 break; 713 } 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 mutex_enter(&sc->sc_lock); 743 while (sce->cur == sce->fill) { 744 if (flag & IO_NDELAY) { 745 mutex_exit(&sc->sc_lock); 746 return (EWOULDBLOCK); 747 } 748 sce->state |= UGEN_ASLP; 749 /* "ugenri" */ 750 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 751 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 752 mstohz(sce->timeout)); 753 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 754 if (sc->sc_dying) 755 error = EIO; 756 if (error) { 757 sce->state &= ~UGEN_ASLP; 758 break; 759 } 760 } 761 762 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 763 if(sce->fill > sce->cur) 764 n = min(sce->fill - sce->cur, uio->uio_resid); 765 else 766 n = min(sce->limit - sce->cur, uio->uio_resid); 767 768 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 769 770 /* Copy the data to the user process. */ 771 error = uiomove(sce->cur, n, uio); 772 if (error) 773 break; 774 sce->cur += n; 775 if (sce->cur >= sce->limit) 776 sce->cur = sce->ibuf; 777 } 778 mutex_exit(&sc->sc_lock); 779 break; 780 781 782 default: 783 return (ENXIO); 784 } 785 return (error); 786 } 787 788 int 789 ugenread(dev_t dev, struct uio *uio, int flag) 790 { 791 int endpt = UGENENDPOINT(dev); 792 struct ugen_softc *sc; 793 int error; 794 795 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 796 if (sc == NULL) 797 return ENXIO; 798 799 mutex_enter(&sc->sc_lock); 800 sc->sc_refcnt++; 801 mutex_exit(&sc->sc_lock); 802 803 error = ugen_do_read(sc, endpt, uio, flag); 804 805 mutex_enter(&sc->sc_lock); 806 if (--sc->sc_refcnt < 0) 807 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 808 mutex_exit(&sc->sc_lock); 809 810 return (error); 811 } 812 813 Static int 814 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 815 int flag) 816 { 817 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 818 u_int32_t n; 819 int error = 0; 820 u_int32_t tn; 821 char *dbuf; 822 usbd_xfer_handle xfer; 823 usbd_status err; 824 825 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 826 827 if (sc->sc_dying) 828 return (EIO); 829 830 if (endpt == USB_CONTROL_ENDPOINT) 831 return (ENODEV); 832 833 #ifdef DIAGNOSTIC 834 if (sce->edesc == NULL) { 835 printf("ugenwrite: no edesc\n"); 836 return (EIO); 837 } 838 if (sce->pipeh == NULL) { 839 printf("ugenwrite: no pipe\n"); 840 return (EIO); 841 } 842 #endif 843 844 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 845 case UE_BULK: 846 if (sce->state & UGEN_BULK_WB) { 847 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 848 uio->uio_resid, sce->ra_wb_used)); 849 xfer = sce->ra_wb_xfer; 850 851 mutex_enter(&sc->sc_lock); 852 if (sce->ra_wb_used == sce->limit - sce->ibuf && 853 flag & IO_NDELAY) { 854 mutex_exit(&sc->sc_lock); 855 return (EWOULDBLOCK); 856 } 857 while (uio->uio_resid > 0 && !error) { 858 while (sce->ra_wb_used == 859 sce->limit - sce->ibuf) { 860 sce->state |= UGEN_ASLP; 861 DPRINTFN(5, 862 ("ugenwrite: sleep on %p\n", 863 sce)); 864 /* "ugenwb" */ 865 error = cv_timedwait_sig(&sce->cv, 866 &sc->sc_lock, mstohz(sce->timeout)); 867 DPRINTFN(5, 868 ("ugenwrite: woke, error=%d\n", 869 error)); 870 if (sc->sc_dying) 871 error = EIO; 872 if (error) { 873 sce->state &= ~UGEN_ASLP; 874 break; 875 } 876 } 877 878 /* Copy data from the process. */ 879 while (uio->uio_resid > 0 && 880 sce->ra_wb_used < sce->limit - sce->ibuf) { 881 n = min(uio->uio_resid, 882 (sce->limit - sce->ibuf) 883 - sce->ra_wb_used); 884 n = min(n, sce->limit - sce->fill); 885 error = uiomove(sce->fill, n, uio); 886 if (error) 887 break; 888 sce->fill += n; 889 sce->ra_wb_used += n; 890 if (sce->fill == sce->limit) 891 sce->fill = sce->ibuf; 892 } 893 894 /* 895 * If the transfers stopped because the 896 * buffer was empty, restart them. 897 */ 898 if (sce->state & UGEN_RA_WB_STOP && 899 sce->ra_wb_used > 0) { 900 dbuf = (char *)usbd_get_buffer(xfer); 901 n = min(sce->ra_wb_used, 902 sce->ra_wb_xferlen); 903 tn = min(n, sce->limit - sce->cur); 904 memcpy(dbuf, sce->cur, tn); 905 dbuf += tn; 906 if (n - tn > 0) 907 memcpy(dbuf, sce->ibuf, 908 n - tn); 909 usbd_setup_xfer(xfer, 910 sce->pipeh, sce, NULL, n, 911 USBD_NO_COPY, USBD_NO_TIMEOUT, 912 ugen_bulkwb_intr); 913 sce->state &= ~UGEN_RA_WB_STOP; 914 err = usbd_transfer(xfer); 915 if (err != USBD_IN_PROGRESS) 916 /* 917 * The transfer has not been 918 * queued. Setting STOP 919 * will make us try again 920 * at the next read. 921 */ 922 sce->state |= UGEN_RA_WB_STOP; 923 } 924 } 925 mutex_exit(&sc->sc_lock); 926 break; 927 } 928 xfer = usbd_alloc_xfer(sc->sc_udev); 929 if (xfer == 0) 930 return (EIO); 931 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 932 error = uiomove(sc->sc_buffer, n, uio); 933 if (error) 934 break; 935 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 936 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 937 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 938 if (err) { 939 if (err == USBD_INTERRUPTED) 940 error = EINTR; 941 else if (err == USBD_TIMEOUT) 942 error = ETIMEDOUT; 943 else 944 error = EIO; 945 break; 946 } 947 } 948 usbd_free_xfer(xfer); 949 break; 950 case UE_INTERRUPT: 951 xfer = usbd_alloc_xfer(sc->sc_udev); 952 if (xfer == 0) 953 return (EIO); 954 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 955 uio->uio_resid)) != 0) { 956 error = uiomove(sc->sc_buffer, n, uio); 957 if (error) 958 break; 959 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 960 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 961 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 962 if (err) { 963 if (err == USBD_INTERRUPTED) 964 error = EINTR; 965 else if (err == USBD_TIMEOUT) 966 error = ETIMEDOUT; 967 else 968 error = EIO; 969 break; 970 } 971 } 972 usbd_free_xfer(xfer); 973 break; 974 default: 975 return (ENXIO); 976 } 977 return (error); 978 } 979 980 int 981 ugenwrite(dev_t dev, struct uio *uio, int flag) 982 { 983 int endpt = UGENENDPOINT(dev); 984 struct ugen_softc *sc; 985 int error; 986 987 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 988 if (sc == NULL) 989 return ENXIO; 990 991 mutex_enter(&sc->sc_lock); 992 sc->sc_refcnt++; 993 mutex_exit(&sc->sc_lock); 994 995 error = ugen_do_write(sc, endpt, uio, flag); 996 997 mutex_enter(&sc->sc_lock); 998 if (--sc->sc_refcnt < 0) 999 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1000 mutex_exit(&sc->sc_lock); 1001 1002 return (error); 1003 } 1004 1005 int 1006 ugen_activate(device_t self, enum devact act) 1007 { 1008 struct ugen_softc *sc = device_private(self); 1009 1010 switch (act) { 1011 case DVACT_DEACTIVATE: 1012 sc->sc_dying = 1; 1013 return 0; 1014 default: 1015 return EOPNOTSUPP; 1016 } 1017 } 1018 1019 int 1020 ugen_detach(device_t self, int flags) 1021 { 1022 struct ugen_softc *sc = device_private(self); 1023 struct ugen_endpoint *sce; 1024 int i, dir; 1025 int maj, mn; 1026 1027 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1028 1029 sc->sc_dying = 1; 1030 pmf_device_deregister(self); 1031 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1032 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1033 for (dir = OUT; dir <= IN; dir++) { 1034 sce = &sc->sc_endpoints[i][dir]; 1035 if (sce && sce->pipeh) 1036 usbd_abort_pipe(sce->pipeh); 1037 } 1038 } 1039 1040 mutex_enter(&sc->sc_lock); 1041 if (--sc->sc_refcnt >= 0) { 1042 /* Wake everyone */ 1043 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1044 cv_signal(&sc->sc_endpoints[i][IN].cv); 1045 /* Wait for processes to go away. */ 1046 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1047 } 1048 mutex_exit(&sc->sc_lock); 1049 1050 /* locate the major number */ 1051 maj = cdevsw_lookup_major(&ugen_cdevsw); 1052 1053 /* Nuke the vnodes for any open instances (calls close). */ 1054 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1055 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1056 1057 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1058 sc->sc_dev); 1059 1060 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1061 for (dir = OUT; dir <= IN; dir++) { 1062 sce = &sc->sc_endpoints[i][dir]; 1063 seldestroy(&sce->rsel); 1064 cv_destroy(&sce->cv); 1065 } 1066 } 1067 1068 cv_destroy(&sc->sc_detach_cv); 1069 mutex_destroy(&sc->sc_lock); 1070 1071 return (0); 1072 } 1073 1074 Static void 1075 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1076 { 1077 struct ugen_endpoint *sce = addr; 1078 struct ugen_softc *sc = sce->sc; 1079 u_int32_t count; 1080 u_char *ibuf; 1081 1082 if (status == USBD_CANCELLED) 1083 return; 1084 1085 if (status != USBD_NORMAL_COMPLETION) { 1086 DPRINTF(("ugenintr: status=%d\n", status)); 1087 if (status == USBD_STALLED) 1088 usbd_clear_endpoint_stall_async(sce->pipeh); 1089 return; 1090 } 1091 1092 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1093 ibuf = sce->ibuf; 1094 1095 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1096 xfer, status, count)); 1097 DPRINTFN(5, (" data = %02x %02x %02x\n", 1098 ibuf[0], ibuf[1], ibuf[2])); 1099 1100 (void)b_to_q(ibuf, count, &sce->q); 1101 1102 mutex_enter(&sc->sc_lock); 1103 if (sce->state & UGEN_ASLP) { 1104 sce->state &= ~UGEN_ASLP; 1105 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1106 cv_signal(&sce->cv); 1107 } 1108 mutex_exit(&sc->sc_lock); 1109 selnotify(&sce->rsel, 0, 0); 1110 } 1111 1112 Static void 1113 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1114 usbd_status status) 1115 { 1116 struct isoreq *req = addr; 1117 struct ugen_endpoint *sce = req->sce; 1118 struct ugen_softc *sc = sce->sc; 1119 u_int32_t count, n; 1120 int i, isize; 1121 1122 /* Return if we are aborting. */ 1123 if (status == USBD_CANCELLED) 1124 return; 1125 1126 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1127 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1128 (long)(req - sce->isoreqs), count)); 1129 1130 /* throw away oldest input if the buffer is full */ 1131 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1132 sce->cur += count; 1133 if(sce->cur >= sce->limit) 1134 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1135 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1136 count)); 1137 } 1138 1139 isize = UGETW(sce->edesc->wMaxPacketSize); 1140 for (i = 0; i < UGEN_NISORFRMS; i++) { 1141 u_int32_t actlen = req->sizes[i]; 1142 char const *tbuf = (char const *)req->dmabuf + isize * i; 1143 1144 /* copy data to buffer */ 1145 while (actlen > 0) { 1146 n = min(actlen, sce->limit - sce->fill); 1147 memcpy(sce->fill, tbuf, n); 1148 1149 tbuf += n; 1150 actlen -= n; 1151 sce->fill += n; 1152 if(sce->fill == sce->limit) 1153 sce->fill = sce->ibuf; 1154 } 1155 1156 /* setup size for next transfer */ 1157 req->sizes[i] = isize; 1158 } 1159 1160 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1161 USBD_NO_COPY, ugen_isoc_rintr); 1162 (void)usbd_transfer(xfer); 1163 1164 mutex_enter(&sc->sc_lock); 1165 if (sce->state & UGEN_ASLP) { 1166 sce->state &= ~UGEN_ASLP; 1167 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1168 cv_signal(&sce->cv); 1169 } 1170 mutex_exit(&sc->sc_lock); 1171 selnotify(&sce->rsel, 0, 0); 1172 } 1173 1174 Static void 1175 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1176 usbd_status status) 1177 { 1178 struct ugen_endpoint *sce = addr; 1179 struct ugen_softc *sc = sce->sc; 1180 u_int32_t count, n; 1181 char const *tbuf; 1182 usbd_status err; 1183 1184 /* Return if we are aborting. */ 1185 if (status == USBD_CANCELLED) 1186 return; 1187 1188 if (status != USBD_NORMAL_COMPLETION) { 1189 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1190 sce->state |= UGEN_RA_WB_STOP; 1191 if (status == USBD_STALLED) 1192 usbd_clear_endpoint_stall_async(sce->pipeh); 1193 return; 1194 } 1195 1196 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1197 1198 /* Keep track of how much is in the buffer. */ 1199 sce->ra_wb_used += count; 1200 1201 /* Copy data to buffer. */ 1202 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1203 n = min(count, sce->limit - sce->fill); 1204 memcpy(sce->fill, tbuf, n); 1205 tbuf += n; 1206 count -= n; 1207 sce->fill += n; 1208 if (sce->fill == sce->limit) 1209 sce->fill = sce->ibuf; 1210 if (count > 0) { 1211 memcpy(sce->fill, tbuf, count); 1212 sce->fill += count; 1213 } 1214 1215 /* Set up the next request if necessary. */ 1216 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1217 if (n > 0) { 1218 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1219 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1220 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1221 err = usbd_transfer(xfer); 1222 if (err != USBD_IN_PROGRESS) { 1223 printf("usbd_bulkra_intr: error=%d\n", err); 1224 /* 1225 * The transfer has not been queued. Setting STOP 1226 * will make us try again at the next read. 1227 */ 1228 sce->state |= UGEN_RA_WB_STOP; 1229 } 1230 } 1231 else 1232 sce->state |= UGEN_RA_WB_STOP; 1233 1234 mutex_enter(&sc->sc_lock); 1235 if (sce->state & UGEN_ASLP) { 1236 sce->state &= ~UGEN_ASLP; 1237 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1238 cv_signal(&sce->cv); 1239 } 1240 mutex_exit(&sc->sc_lock); 1241 selnotify(&sce->rsel, 0, 0); 1242 } 1243 1244 Static void 1245 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1246 usbd_status status) 1247 { 1248 struct ugen_endpoint *sce = addr; 1249 struct ugen_softc *sc = sce->sc; 1250 u_int32_t count, n; 1251 char *tbuf; 1252 usbd_status err; 1253 1254 /* Return if we are aborting. */ 1255 if (status == USBD_CANCELLED) 1256 return; 1257 1258 if (status != USBD_NORMAL_COMPLETION) { 1259 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1260 sce->state |= UGEN_RA_WB_STOP; 1261 if (status == USBD_STALLED) 1262 usbd_clear_endpoint_stall_async(sce->pipeh); 1263 return; 1264 } 1265 1266 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1267 1268 /* Keep track of how much is in the buffer. */ 1269 sce->ra_wb_used -= count; 1270 1271 /* Update buffer pointers. */ 1272 sce->cur += count; 1273 if (sce->cur >= sce->limit) 1274 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1275 1276 /* Set up next request if necessary. */ 1277 if (sce->ra_wb_used > 0) { 1278 /* copy data from buffer */ 1279 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1280 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1281 n = min(count, sce->limit - sce->cur); 1282 memcpy(tbuf, sce->cur, n); 1283 tbuf += n; 1284 if (count - n > 0) 1285 memcpy(tbuf, sce->ibuf, count - n); 1286 1287 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1288 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1289 err = usbd_transfer(xfer); 1290 if (err != USBD_IN_PROGRESS) { 1291 printf("usbd_bulkwb_intr: error=%d\n", err); 1292 /* 1293 * The transfer has not been queued. Setting STOP 1294 * will make us try again at the next write. 1295 */ 1296 sce->state |= UGEN_RA_WB_STOP; 1297 } 1298 } 1299 else 1300 sce->state |= UGEN_RA_WB_STOP; 1301 1302 mutex_enter(&sc->sc_lock); 1303 if (sce->state & UGEN_ASLP) { 1304 sce->state &= ~UGEN_ASLP; 1305 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1306 cv_signal(&sce->cv); 1307 } 1308 mutex_exit(&sc->sc_lock); 1309 selnotify(&sce->rsel, 0, 0); 1310 } 1311 1312 Static usbd_status 1313 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1314 { 1315 usbd_interface_handle iface; 1316 usb_endpoint_descriptor_t *ed; 1317 usbd_status err; 1318 struct ugen_endpoint *sce; 1319 u_int8_t niface, nendpt, endptno, endpt; 1320 int dir; 1321 1322 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1323 1324 err = usbd_interface_count(sc->sc_udev, &niface); 1325 if (err) 1326 return (err); 1327 if (ifaceidx < 0 || ifaceidx >= niface) 1328 return (USBD_INVAL); 1329 1330 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1331 if (err) 1332 return (err); 1333 err = usbd_endpoint_count(iface, &nendpt); 1334 if (err) 1335 return (err); 1336 /* XXX should only do this after setting new altno has succeeded */ 1337 for (endptno = 0; endptno < nendpt; endptno++) { 1338 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1339 endpt = ed->bEndpointAddress; 1340 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1341 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1342 sce->sc = 0; 1343 sce->edesc = 0; 1344 sce->iface = 0; 1345 } 1346 1347 /* change setting */ 1348 err = usbd_set_interface(iface, altno); 1349 if (err) 1350 return (err); 1351 1352 err = usbd_endpoint_count(iface, &nendpt); 1353 if (err) 1354 return (err); 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 Fri Sep 26 08:10:20 GMT 2025