ugen.c revision 1.126.2.2
1 /* $NetBSD: ugen.c,v 1.126.2.2 2014/12/01 13:03:05 skrll 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 1.126.2.2 2014/12/01 13:03:05 skrll Exp $"); 41 42 #ifdef _KERNEL_OPT 43 #include "opt_compat_netbsd.h" 44 #include "opt_usb.h" 45 #endif 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/malloc.h> 51 #include <sys/device.h> 52 #include <sys/ioctl.h> 53 #include <sys/conf.h> 54 #include <sys/tty.h> 55 #include <sys/file.h> 56 #include <sys/select.h> 57 #include <sys/proc.h> 58 #include <sys/vnode.h> 59 #include <sys/poll.h> 60 61 #include <dev/usb/usb.h> 62 #include <dev/usb/usbdi.h> 63 #include <dev/usb/usbdi_util.h> 64 65 #ifdef UGEN_DEBUG 66 #define DPRINTF(x) if (ugendebug) printf x 67 #define DPRINTFN(n,x) if (ugendebug>(n)) printf x 68 int ugendebug = 0; 69 #else 70 #define DPRINTF(x) 71 #define DPRINTFN(n,x) 72 #endif 73 74 #define UGEN_CHUNK 128 /* chunk size for read */ 75 #define UGEN_IBSIZE 1020 /* buffer size */ 76 #define UGEN_BBSIZE 1024 77 78 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 79 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 80 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 81 82 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 83 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 84 85 struct isoreq { 86 struct ugen_endpoint *sce; 87 usbd_xfer_handle xfer; 88 void *dmabuf; 89 uint16_t sizes[UGEN_NISORFRMS]; 90 }; 91 92 struct ugen_endpoint { 93 struct ugen_softc *sc; 94 usb_endpoint_descriptor_t *edesc; 95 usbd_interface_handle iface; 96 int state; 97 #define UGEN_ASLP 0x02 /* waiting for data */ 98 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 99 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 100 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 101 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 102 usbd_pipe_handle pipeh; 103 struct clist q; 104 u_char *ibuf; /* start of buffer (circular for isoc) */ 105 u_char *fill; /* location for input (isoc) */ 106 u_char *limit; /* end of circular buffer (isoc) */ 107 u_char *cur; /* current read location (isoc) */ 108 uint32_t timeout; 109 uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 110 uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 111 uint32_t ra_wb_used; /* how much is in buffer */ 112 uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 113 usbd_xfer_handle ra_wb_xfer; 114 struct isoreq isoreqs[UGEN_NISOREQS]; 115 /* Keep these last; we don't overwrite them in ugen_set_config() */ 116 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 117 struct selinfo rsel; 118 kcondvar_t cv; 119 }; 120 121 struct ugen_softc { 122 device_t sc_dev; /* base device */ 123 usbd_device_handle sc_udev; 124 125 kmutex_t sc_lock; 126 kcondvar_t sc_detach_cv; 127 128 char sc_is_open[USB_MAX_ENDPOINTS]; 129 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 130 #define OUT 0 131 #define IN 1 132 133 int sc_refcnt; 134 char sc_buffer[UGEN_BBSIZE]; 135 u_char sc_dying; 136 }; 137 138 dev_type_open(ugenopen); 139 dev_type_close(ugenclose); 140 dev_type_read(ugenread); 141 dev_type_write(ugenwrite); 142 dev_type_ioctl(ugenioctl); 143 dev_type_poll(ugenpoll); 144 dev_type_kqfilter(ugenkqfilter); 145 146 const struct cdevsw ugen_cdevsw = { 147 .d_open = ugenopen, 148 .d_close = ugenclose, 149 .d_read = ugenread, 150 .d_write = ugenwrite, 151 .d_ioctl = ugenioctl, 152 .d_stop = nostop, 153 .d_tty = notty, 154 .d_poll = ugenpoll, 155 .d_mmap = nommap, 156 .d_kqfilter = ugenkqfilter, 157 .d_discard = nodiscard, 158 .d_flag = D_OTHER, 159 }; 160 161 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 162 usbd_status status); 163 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 164 usbd_status status); 165 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 166 usbd_status status); 167 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 168 usbd_status status); 169 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 170 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 171 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 172 void *, int, struct lwp *); 173 Static int ugen_set_config(struct ugen_softc *sc, int configno); 174 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 175 int index, int *lenp); 176 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 177 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 178 179 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 180 #define UGENENDPOINT(n) (minor(n) & 0xf) 181 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 182 183 int ugen_match(device_t, cfdata_t, void *); 184 void ugen_attach(device_t, device_t, void *); 185 int ugen_detach(device_t, int); 186 int ugen_activate(device_t, enum devact); 187 extern struct cfdriver ugen_cd; 188 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, ugen_attach, ugen_detach, ugen_activate); 189 190 /* toggle to control attach priority. -1 means "let autoconf decide" */ 191 int ugen_override = -1; 192 193 int 194 ugen_match(device_t parent, cfdata_t match, void *aux) 195 { 196 struct usb_attach_arg *uaa = aux; 197 int override; 198 199 if (ugen_override != -1) 200 override = ugen_override; 201 else 202 override = match->cf_flags & 1; 203 204 if (override) 205 return (UMATCH_HIGHEST); 206 else if (uaa->usegeneric) 207 return (UMATCH_GENERIC); 208 else 209 return (UMATCH_NONE); 210 } 211 212 void 213 ugen_attach(device_t parent, device_t self, void *aux) 214 { 215 struct ugen_softc *sc = device_private(self); 216 struct usb_attach_arg *uaa = aux; 217 usbd_device_handle udev; 218 char *devinfop; 219 usbd_status err; 220 int i, dir, conf; 221 222 aprint_naive("\n"); 223 aprint_normal("\n"); 224 225 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_USB); 226 cv_init(&sc->sc_detach_cv, "ugendet"); 227 228 devinfop = usbd_devinfo_alloc(uaa->device, 0); 229 aprint_normal_dev(self, "%s\n", devinfop); 230 usbd_devinfo_free(devinfop); 231 232 sc->sc_dev = self; 233 sc->sc_udev = udev = uaa->device; 234 235 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 236 for (dir = OUT; dir <= IN; dir++) { 237 struct ugen_endpoint *sce; 238 239 sce = &sc->sc_endpoints[i][dir]; 240 selinit(&sce->rsel); 241 cv_init(&sce->cv, "ugensce"); 242 } 243 } 244 245 /* First set configuration index 0, the default one for ugen. */ 246 err = usbd_set_config_index(udev, 0, 0); 247 if (err) { 248 aprint_error_dev(self, 249 "setting configuration index 0 failed\n"); 250 sc->sc_dying = 1; 251 return; 252 } 253 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 254 255 /* Set up all the local state for this configuration. */ 256 err = ugen_set_config(sc, conf); 257 if (err) { 258 aprint_error_dev(self, "setting configuration %d failed\n", 259 conf); 260 sc->sc_dying = 1; 261 return; 262 } 263 264 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 265 sc->sc_dev); 266 267 if (!pmf_device_register(self, NULL, NULL)) 268 aprint_error_dev(self, "couldn't establish power handler\n"); 269 270 return; 271 } 272 273 Static int 274 ugen_set_config(struct ugen_softc *sc, int configno) 275 { 276 usbd_device_handle dev = sc->sc_udev; 277 usb_config_descriptor_t *cdesc; 278 usbd_interface_handle iface; 279 usb_endpoint_descriptor_t *ed; 280 struct ugen_endpoint *sce; 281 uint8_t niface, nendpt; 282 int ifaceno, endptno, endpt; 283 usbd_status err; 284 int dir, i; 285 286 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 287 device_xname(sc->sc_dev), configno, sc)); 288 289 /* 290 * We start at 1, not 0, because we don't care whether the 291 * control endpoint is open or not. It is always present. 292 */ 293 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 294 if (sc->sc_is_open[endptno]) { 295 DPRINTFN(1, 296 ("ugen_set_config: %s - endpoint %d is open\n", 297 device_xname(sc->sc_dev), endptno)); 298 return (USBD_IN_USE); 299 } 300 301 /* Avoid setting the current value. */ 302 cdesc = usbd_get_config_descriptor(dev); 303 if (!cdesc || cdesc->bConfigurationValue != configno) { 304 err = usbd_set_config_no(dev, configno, 1); 305 if (err) 306 return (err); 307 } 308 309 err = usbd_interface_count(dev, &niface); 310 if (err) 311 return (err); 312 313 /* Clear out the old info, but leave the selinfo and cv initialised. */ 314 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 315 for (dir = OUT; dir <= IN; dir++) { 316 sce = &sc->sc_endpoints[i][dir]; 317 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 318 } 319 } 320 321 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 322 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 323 err = usbd_device2interface_handle(dev, ifaceno, &iface); 324 if (err) 325 return (err); 326 err = usbd_endpoint_count(iface, &nendpt); 327 if (err) 328 return (err); 329 for (endptno = 0; endptno < nendpt; endptno++) { 330 ed = usbd_interface2endpoint_descriptor(iface,endptno); 331 KASSERT(ed != NULL); 332 endpt = ed->bEndpointAddress; 333 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 334 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 335 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 336 "(%d,%d), sce=%p\n", 337 endptno, endpt, UE_GET_ADDR(endpt), 338 UE_GET_DIR(endpt), sce)); 339 sce->sc = sc; 340 sce->edesc = ed; 341 sce->iface = iface; 342 } 343 } 344 return (USBD_NORMAL_COMPLETION); 345 } 346 347 int 348 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 349 { 350 struct ugen_softc *sc; 351 int unit = UGENUNIT(dev); 352 int endpt = UGENENDPOINT(dev); 353 usb_endpoint_descriptor_t *edesc; 354 struct ugen_endpoint *sce; 355 int dir, isize; 356 usbd_status err; 357 usbd_xfer_handle xfer; 358 void *tbuf; 359 int i, j; 360 361 sc = device_lookup_private(&ugen_cd, unit); 362 if (sc == NULL) 363 return ENXIO; 364 365 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 366 flag, mode, unit, endpt)); 367 368 if (sc == NULL || sc->sc_dying) 369 return (ENXIO); 370 371 /* The control endpoint allows multiple opens. */ 372 if (endpt == USB_CONTROL_ENDPOINT) { 373 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 374 return (0); 375 } 376 377 if (sc->sc_is_open[endpt]) 378 return (EBUSY); 379 380 /* Make sure there are pipes for all directions. */ 381 for (dir = OUT; dir <= IN; dir++) { 382 if (flag & (dir == OUT ? FWRITE : FREAD)) { 383 sce = &sc->sc_endpoints[endpt][dir]; 384 if (sce == 0 || sce->edesc == 0) 385 return (ENXIO); 386 } 387 } 388 389 /* Actually open the pipes. */ 390 /* XXX Should back out properly if it fails. */ 391 for (dir = OUT; dir <= IN; dir++) { 392 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 393 continue; 394 sce = &sc->sc_endpoints[endpt][dir]; 395 sce->state = 0; 396 sce->timeout = USBD_NO_TIMEOUT; 397 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 398 sc, endpt, dir, sce)); 399 edesc = sce->edesc; 400 switch (edesc->bmAttributes & UE_XFERTYPE) { 401 case UE_INTERRUPT: 402 if (dir == OUT) { 403 err = usbd_open_pipe(sce->iface, 404 edesc->bEndpointAddress, 0, &sce->pipeh); 405 if (err) 406 return (EIO); 407 break; 408 } 409 isize = UGETW(edesc->wMaxPacketSize); 410 if (isize == 0) /* shouldn't happen */ 411 return (EINVAL); 412 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 413 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 414 endpt, isize)); 415 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 416 free(sce->ibuf, M_USBDEV); 417 sce->ibuf = NULL; 418 return (ENOMEM); 419 } 420 err = usbd_open_pipe_intr(sce->iface, 421 edesc->bEndpointAddress, 422 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 423 sce->ibuf, isize, ugenintr, 424 USBD_DEFAULT_INTERVAL); 425 if (err) { 426 clfree(&sce->q); 427 free(sce->ibuf, M_USBDEV); 428 sce->ibuf = NULL; 429 return (EIO); 430 } 431 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 432 break; 433 case UE_BULK: 434 err = usbd_open_pipe(sce->iface, 435 edesc->bEndpointAddress, 0, &sce->pipeh); 436 if (err) 437 return (EIO); 438 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 439 /* 440 * Use request size for non-RA/WB transfers 441 * as the default. 442 */ 443 sce->ra_wb_reqsize = UGEN_BBSIZE; 444 break; 445 case UE_ISOCHRONOUS: 446 if (dir == OUT) 447 return (EINVAL); 448 isize = UGETW(edesc->wMaxPacketSize); 449 if (isize == 0) /* shouldn't happen */ 450 return (EINVAL); 451 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 452 M_USBDEV, M_WAITOK); 453 sce->cur = sce->fill = sce->ibuf; 454 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 455 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 456 endpt, isize)); 457 err = usbd_open_pipe(sce->iface, 458 edesc->bEndpointAddress, 0, &sce->pipeh); 459 if (err) { 460 free(sce->ibuf, M_USBDEV); 461 sce->ibuf = NULL; 462 return (EIO); 463 } 464 for(i = 0; i < UGEN_NISOREQS; ++i) { 465 sce->isoreqs[i].sce = sce; 466 xfer = usbd_alloc_xfer(sc->sc_udev); 467 if (xfer == 0) 468 goto bad; 469 sce->isoreqs[i].xfer = xfer; 470 tbuf = usbd_alloc_buffer 471 (xfer, isize * UGEN_NISORFRMS); 472 if (tbuf == 0) { 473 i++; 474 goto bad; 475 } 476 sce->isoreqs[i].dmabuf = tbuf; 477 for(j = 0; j < UGEN_NISORFRMS; ++j) 478 sce->isoreqs[i].sizes[j] = isize; 479 usbd_setup_isoc_xfer 480 (xfer, sce->pipeh, &sce->isoreqs[i], 481 sce->isoreqs[i].sizes, 482 UGEN_NISORFRMS, USBD_NO_COPY, 483 ugen_isoc_rintr); 484 (void)usbd_transfer(xfer); 485 } 486 DPRINTFN(5, ("ugenopen: isoc open done\n")); 487 break; 488 bad: 489 while (--i >= 0) /* implicit buffer free */ 490 usbd_free_xfer(sce->isoreqs[i].xfer); 491 usbd_close_pipe(sce->pipeh); 492 sce->pipeh = NULL; 493 free(sce->ibuf, M_USBDEV); 494 sce->ibuf = NULL; 495 return (ENOMEM); 496 case UE_CONTROL: 497 sce->timeout = USBD_DEFAULT_TIMEOUT; 498 return (EINVAL); 499 } 500 } 501 sc->sc_is_open[endpt] = 1; 502 return (0); 503 } 504 505 int 506 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 507 { 508 int endpt = UGENENDPOINT(dev); 509 struct ugen_softc *sc; 510 struct ugen_endpoint *sce; 511 int dir; 512 int i; 513 514 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 515 if (sc == NULL) 516 return ENXIO; 517 518 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 519 flag, mode, UGENUNIT(dev), endpt)); 520 521 #ifdef DIAGNOSTIC 522 if (!sc->sc_is_open[endpt]) { 523 printf("ugenclose: not open\n"); 524 return (EINVAL); 525 } 526 #endif 527 528 if (endpt == USB_CONTROL_ENDPOINT) { 529 DPRINTFN(5, ("ugenclose: close control\n")); 530 sc->sc_is_open[endpt] = 0; 531 return (0); 532 } 533 534 for (dir = OUT; dir <= IN; dir++) { 535 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 536 continue; 537 sce = &sc->sc_endpoints[endpt][dir]; 538 if (sce == NULL || sce->pipeh == NULL) 539 continue; 540 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 541 endpt, dir, sce)); 542 543 usbd_abort_pipe(sce->pipeh); 544 usbd_close_pipe(sce->pipeh); 545 sce->pipeh = NULL; 546 547 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 548 case UE_INTERRUPT: 549 ndflush(&sce->q, sce->q.c_cc); 550 clfree(&sce->q); 551 break; 552 case UE_ISOCHRONOUS: 553 for (i = 0; i < UGEN_NISOREQS; ++i) 554 usbd_free_xfer(sce->isoreqs[i].xfer); 555 break; 556 case UE_BULK: 557 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 558 /* ibuf freed below */ 559 usbd_free_xfer(sce->ra_wb_xfer); 560 break; 561 default: 562 break; 563 } 564 565 if (sce->ibuf != NULL) { 566 free(sce->ibuf, M_USBDEV); 567 sce->ibuf = NULL; 568 } 569 } 570 sc->sc_is_open[endpt] = 0; 571 572 return (0); 573 } 574 575 Static int 576 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 577 { 578 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 579 uint32_t n, tn; 580 usbd_xfer_handle xfer; 581 usbd_status err; 582 int error = 0; 583 584 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 585 586 if (sc->sc_dying) 587 return (EIO); 588 589 if (endpt == USB_CONTROL_ENDPOINT) 590 return (ENODEV); 591 592 #ifdef DIAGNOSTIC 593 if (sce->edesc == NULL) { 594 printf("ugenread: no edesc\n"); 595 return (EIO); 596 } 597 if (sce->pipeh == NULL) { 598 printf("ugenread: no pipe\n"); 599 return (EIO); 600 } 601 #endif 602 603 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 604 case UE_INTERRUPT: 605 /* Block until activity occurred. */ 606 mutex_enter(&sc->sc_lock); 607 while (sce->q.c_cc == 0) { 608 if (flag & IO_NDELAY) { 609 mutex_exit(&sc->sc_lock); 610 return (EWOULDBLOCK); 611 } 612 sce->state |= UGEN_ASLP; 613 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 614 /* "ugenri" */ 615 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 616 mstohz(sce->timeout)); 617 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 618 if (sc->sc_dying) 619 error = EIO; 620 if (error) { 621 sce->state &= ~UGEN_ASLP; 622 break; 623 } 624 } 625 mutex_exit(&sc->sc_lock); 626 627 /* Transfer as many chunks as possible. */ 628 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 629 n = min(sce->q.c_cc, uio->uio_resid); 630 if (n > sizeof(sc->sc_buffer)) 631 n = sizeof(sc->sc_buffer); 632 633 /* Remove a small chunk from the input queue. */ 634 q_to_b(&sce->q, sc->sc_buffer, n); 635 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 636 637 /* Copy the data to the user process. */ 638 error = uiomove(sc->sc_buffer, n, uio); 639 if (error) 640 break; 641 } 642 break; 643 case UE_BULK: 644 if (sce->state & UGEN_BULK_RA) { 645 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 646 uio->uio_resid, sce->ra_wb_used)); 647 xfer = sce->ra_wb_xfer; 648 649 mutex_enter(&sc->sc_lock); 650 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 651 mutex_exit(&sc->sc_lock); 652 return (EWOULDBLOCK); 653 } 654 while (uio->uio_resid > 0 && !error) { 655 while (sce->ra_wb_used == 0) { 656 sce->state |= UGEN_ASLP; 657 DPRINTFN(5, 658 ("ugenread: sleep on %p\n", 659 sce)); 660 /* "ugenrb" */ 661 error = cv_timedwait_sig(&sce->cv, 662 &sc->sc_lock, mstohz(sce->timeout)); 663 DPRINTFN(5, 664 ("ugenread: woke, error=%d\n", 665 error)); 666 if (sc->sc_dying) 667 error = EIO; 668 if (error) { 669 sce->state &= ~UGEN_ASLP; 670 break; 671 } 672 } 673 674 /* Copy data to the process. */ 675 while (uio->uio_resid > 0 676 && sce->ra_wb_used > 0) { 677 n = min(uio->uio_resid, 678 sce->ra_wb_used); 679 n = min(n, sce->limit - sce->cur); 680 error = uiomove(sce->cur, n, uio); 681 if (error) 682 break; 683 sce->cur += n; 684 sce->ra_wb_used -= n; 685 if (sce->cur == sce->limit) 686 sce->cur = sce->ibuf; 687 } 688 689 /* 690 * If the transfers stopped because the 691 * buffer was full, restart them. 692 */ 693 if (sce->state & UGEN_RA_WB_STOP && 694 sce->ra_wb_used < sce->limit - sce->ibuf) { 695 n = (sce->limit - sce->ibuf) 696 - sce->ra_wb_used; 697 usbd_setup_xfer(xfer, 698 sce->pipeh, sce, NULL, 699 min(n, sce->ra_wb_xferlen), 700 USBD_NO_COPY, USBD_NO_TIMEOUT, 701 ugen_bulkra_intr); 702 sce->state &= ~UGEN_RA_WB_STOP; 703 err = usbd_transfer(xfer); 704 if (err != USBD_IN_PROGRESS) 705 /* 706 * The transfer has not been 707 * queued. Setting STOP 708 * will make us try 709 * again at the next read. 710 */ 711 sce->state |= UGEN_RA_WB_STOP; 712 } 713 } 714 mutex_exit(&sc->sc_lock); 715 break; 716 } 717 xfer = usbd_alloc_xfer(sc->sc_udev); 718 if (xfer == 0) 719 return (ENOMEM); 720 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 721 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 722 tn = n; 723 err = usbd_bulk_transfer( 724 xfer, sce->pipeh, 725 sce->state & UGEN_SHORT_OK ? 726 USBD_SHORT_XFER_OK : 0, 727 sce->timeout, sc->sc_buffer, &tn); 728 if (err) { 729 if (err == USBD_INTERRUPTED) 730 error = EINTR; 731 else if (err == USBD_TIMEOUT) 732 error = ETIMEDOUT; 733 else 734 error = EIO; 735 break; 736 } 737 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 738 error = uiomove(sc->sc_buffer, tn, uio); 739 if (error || tn < n) 740 break; 741 } 742 usbd_free_xfer(xfer); 743 break; 744 case UE_ISOCHRONOUS: 745 mutex_enter(&sc->sc_lock); 746 while (sce->cur == sce->fill) { 747 if (flag & IO_NDELAY) { 748 mutex_exit(&sc->sc_lock); 749 return (EWOULDBLOCK); 750 } 751 sce->state |= UGEN_ASLP; 752 /* "ugenri" */ 753 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 754 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 755 mstohz(sce->timeout)); 756 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 757 if (sc->sc_dying) 758 error = EIO; 759 if (error) { 760 sce->state &= ~UGEN_ASLP; 761 break; 762 } 763 } 764 765 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 766 if(sce->fill > sce->cur) 767 n = min(sce->fill - sce->cur, uio->uio_resid); 768 else 769 n = min(sce->limit - sce->cur, uio->uio_resid); 770 771 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 772 773 /* Copy the data to the user process. */ 774 error = uiomove(sce->cur, n, uio); 775 if (error) 776 break; 777 sce->cur += n; 778 if (sce->cur >= sce->limit) 779 sce->cur = sce->ibuf; 780 } 781 mutex_exit(&sc->sc_lock); 782 break; 783 784 785 default: 786 return (ENXIO); 787 } 788 return (error); 789 } 790 791 int 792 ugenread(dev_t dev, struct uio *uio, int flag) 793 { 794 int endpt = UGENENDPOINT(dev); 795 struct ugen_softc *sc; 796 int error; 797 798 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 799 if (sc == NULL) 800 return ENXIO; 801 802 mutex_enter(&sc->sc_lock); 803 sc->sc_refcnt++; 804 mutex_exit(&sc->sc_lock); 805 806 error = ugen_do_read(sc, endpt, uio, flag); 807 808 mutex_enter(&sc->sc_lock); 809 if (--sc->sc_refcnt < 0) 810 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 811 mutex_exit(&sc->sc_lock); 812 813 return (error); 814 } 815 816 Static int 817 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 818 int flag) 819 { 820 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 821 uint32_t n; 822 int error = 0; 823 uint32_t tn; 824 char *dbuf; 825 usbd_xfer_handle xfer; 826 usbd_status err; 827 828 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 829 830 if (sc->sc_dying) 831 return (EIO); 832 833 if (endpt == USB_CONTROL_ENDPOINT) 834 return (ENODEV); 835 836 #ifdef DIAGNOSTIC 837 if (sce->edesc == NULL) { 838 printf("ugenwrite: no edesc\n"); 839 return (EIO); 840 } 841 if (sce->pipeh == NULL) { 842 printf("ugenwrite: no pipe\n"); 843 return (EIO); 844 } 845 #endif 846 847 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 848 case UE_BULK: 849 if (sce->state & UGEN_BULK_WB) { 850 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 851 uio->uio_resid, sce->ra_wb_used)); 852 xfer = sce->ra_wb_xfer; 853 854 mutex_enter(&sc->sc_lock); 855 if (sce->ra_wb_used == sce->limit - sce->ibuf && 856 flag & IO_NDELAY) { 857 mutex_exit(&sc->sc_lock); 858 return (EWOULDBLOCK); 859 } 860 while (uio->uio_resid > 0 && !error) { 861 while (sce->ra_wb_used == 862 sce->limit - sce->ibuf) { 863 sce->state |= UGEN_ASLP; 864 DPRINTFN(5, 865 ("ugenwrite: sleep on %p\n", 866 sce)); 867 /* "ugenwb" */ 868 error = cv_timedwait_sig(&sce->cv, 869 &sc->sc_lock, mstohz(sce->timeout)); 870 DPRINTFN(5, 871 ("ugenwrite: woke, error=%d\n", 872 error)); 873 if (sc->sc_dying) 874 error = EIO; 875 if (error) { 876 sce->state &= ~UGEN_ASLP; 877 break; 878 } 879 } 880 881 /* Copy data from the process. */ 882 while (uio->uio_resid > 0 && 883 sce->ra_wb_used < sce->limit - sce->ibuf) { 884 n = min(uio->uio_resid, 885 (sce->limit - sce->ibuf) 886 - sce->ra_wb_used); 887 n = min(n, sce->limit - sce->fill); 888 error = uiomove(sce->fill, n, uio); 889 if (error) 890 break; 891 sce->fill += n; 892 sce->ra_wb_used += n; 893 if (sce->fill == sce->limit) 894 sce->fill = sce->ibuf; 895 } 896 897 /* 898 * If the transfers stopped because the 899 * buffer was empty, restart them. 900 */ 901 if (sce->state & UGEN_RA_WB_STOP && 902 sce->ra_wb_used > 0) { 903 dbuf = (char *)usbd_get_buffer(xfer); 904 n = min(sce->ra_wb_used, 905 sce->ra_wb_xferlen); 906 tn = min(n, sce->limit - sce->cur); 907 memcpy(dbuf, sce->cur, tn); 908 dbuf += tn; 909 if (n - tn > 0) 910 memcpy(dbuf, sce->ibuf, 911 n - tn); 912 usbd_setup_xfer(xfer, 913 sce->pipeh, sce, NULL, n, 914 USBD_NO_COPY, USBD_NO_TIMEOUT, 915 ugen_bulkwb_intr); 916 sce->state &= ~UGEN_RA_WB_STOP; 917 err = usbd_transfer(xfer); 918 if (err != USBD_IN_PROGRESS) 919 /* 920 * The transfer has not been 921 * queued. Setting STOP 922 * will make us try again 923 * at the next read. 924 */ 925 sce->state |= UGEN_RA_WB_STOP; 926 } 927 } 928 mutex_exit(&sc->sc_lock); 929 break; 930 } 931 xfer = usbd_alloc_xfer(sc->sc_udev); 932 if (xfer == 0) 933 return (EIO); 934 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 935 error = uiomove(sc->sc_buffer, n, uio); 936 if (error) 937 break; 938 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 939 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 940 sce->timeout, sc->sc_buffer, &n); 941 if (err) { 942 if (err == USBD_INTERRUPTED) 943 error = EINTR; 944 else if (err == USBD_TIMEOUT) 945 error = ETIMEDOUT; 946 else 947 error = EIO; 948 break; 949 } 950 } 951 usbd_free_xfer(xfer); 952 break; 953 case UE_INTERRUPT: 954 xfer = usbd_alloc_xfer(sc->sc_udev); 955 if (xfer == 0) 956 return (EIO); 957 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 958 uio->uio_resid)) != 0) { 959 error = uiomove(sc->sc_buffer, n, uio); 960 if (error) 961 break; 962 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 963 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 964 sce->timeout, sc->sc_buffer, &n); 965 if (err) { 966 if (err == USBD_INTERRUPTED) 967 error = EINTR; 968 else if (err == USBD_TIMEOUT) 969 error = ETIMEDOUT; 970 else 971 error = EIO; 972 break; 973 } 974 } 975 usbd_free_xfer(xfer); 976 break; 977 default: 978 return (ENXIO); 979 } 980 return (error); 981 } 982 983 int 984 ugenwrite(dev_t dev, struct uio *uio, int flag) 985 { 986 int endpt = UGENENDPOINT(dev); 987 struct ugen_softc *sc; 988 int error; 989 990 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 991 if (sc == NULL) 992 return ENXIO; 993 994 mutex_enter(&sc->sc_lock); 995 sc->sc_refcnt++; 996 mutex_exit(&sc->sc_lock); 997 998 error = ugen_do_write(sc, endpt, uio, flag); 999 1000 mutex_enter(&sc->sc_lock); 1001 if (--sc->sc_refcnt < 0) 1002 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1003 mutex_exit(&sc->sc_lock); 1004 1005 return (error); 1006 } 1007 1008 int 1009 ugen_activate(device_t self, enum devact act) 1010 { 1011 struct ugen_softc *sc = device_private(self); 1012 1013 switch (act) { 1014 case DVACT_DEACTIVATE: 1015 sc->sc_dying = 1; 1016 return 0; 1017 default: 1018 return EOPNOTSUPP; 1019 } 1020 } 1021 1022 int 1023 ugen_detach(device_t self, int flags) 1024 { 1025 struct ugen_softc *sc = device_private(self); 1026 struct ugen_endpoint *sce; 1027 int i, dir; 1028 int maj, mn; 1029 1030 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1031 1032 sc->sc_dying = 1; 1033 pmf_device_deregister(self); 1034 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1035 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1036 for (dir = OUT; dir <= IN; dir++) { 1037 sce = &sc->sc_endpoints[i][dir]; 1038 if (sce && sce->pipeh) 1039 usbd_abort_pipe(sce->pipeh); 1040 } 1041 } 1042 1043 mutex_enter(&sc->sc_lock); 1044 if (--sc->sc_refcnt >= 0) { 1045 /* Wake everyone */ 1046 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1047 cv_signal(&sc->sc_endpoints[i][IN].cv); 1048 /* Wait for processes to go away. */ 1049 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1050 } 1051 mutex_exit(&sc->sc_lock); 1052 1053 /* locate the major number */ 1054 maj = cdevsw_lookup_major(&ugen_cdevsw); 1055 1056 /* Nuke the vnodes for any open instances (calls close). */ 1057 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1058 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1059 1060 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1061 sc->sc_dev); 1062 1063 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1064 for (dir = OUT; dir <= IN; dir++) { 1065 sce = &sc->sc_endpoints[i][dir]; 1066 seldestroy(&sce->rsel); 1067 cv_destroy(&sce->cv); 1068 } 1069 } 1070 1071 cv_destroy(&sc->sc_detach_cv); 1072 mutex_destroy(&sc->sc_lock); 1073 1074 return (0); 1075 } 1076 1077 Static void 1078 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1079 { 1080 struct ugen_endpoint *sce = addr; 1081 struct ugen_softc *sc = sce->sc; 1082 uint32_t count; 1083 u_char *ibuf; 1084 1085 if (status == USBD_CANCELLED) 1086 return; 1087 1088 if (status != USBD_NORMAL_COMPLETION) { 1089 DPRINTF(("ugenintr: status=%d\n", status)); 1090 if (status == USBD_STALLED) 1091 usbd_clear_endpoint_stall_async(sce->pipeh); 1092 return; 1093 } 1094 1095 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1096 ibuf = sce->ibuf; 1097 1098 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1099 xfer, status, count)); 1100 DPRINTFN(5, (" data = %02x %02x %02x\n", 1101 ibuf[0], ibuf[1], ibuf[2])); 1102 1103 (void)b_to_q(ibuf, count, &sce->q); 1104 1105 mutex_enter(&sc->sc_lock); 1106 if (sce->state & UGEN_ASLP) { 1107 sce->state &= ~UGEN_ASLP; 1108 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1109 cv_signal(&sce->cv); 1110 } 1111 mutex_exit(&sc->sc_lock); 1112 selnotify(&sce->rsel, 0, 0); 1113 } 1114 1115 Static void 1116 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1117 usbd_status status) 1118 { 1119 struct isoreq *req = addr; 1120 struct ugen_endpoint *sce = req->sce; 1121 struct ugen_softc *sc = sce->sc; 1122 uint32_t count, n; 1123 int i, isize; 1124 1125 /* Return if we are aborting. */ 1126 if (status == USBD_CANCELLED) 1127 return; 1128 1129 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1130 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1131 (long)(req - sce->isoreqs), count)); 1132 1133 /* throw away oldest input if the buffer is full */ 1134 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1135 sce->cur += count; 1136 if(sce->cur >= sce->limit) 1137 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1138 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1139 count)); 1140 } 1141 1142 isize = UGETW(sce->edesc->wMaxPacketSize); 1143 for (i = 0; i < UGEN_NISORFRMS; i++) { 1144 uint32_t actlen = req->sizes[i]; 1145 char const *tbuf = (char const *)req->dmabuf + isize * i; 1146 1147 /* copy data to buffer */ 1148 while (actlen > 0) { 1149 n = min(actlen, sce->limit - sce->fill); 1150 memcpy(sce->fill, tbuf, n); 1151 1152 tbuf += n; 1153 actlen -= n; 1154 sce->fill += n; 1155 if(sce->fill == sce->limit) 1156 sce->fill = sce->ibuf; 1157 } 1158 1159 /* setup size for next transfer */ 1160 req->sizes[i] = isize; 1161 } 1162 1163 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1164 USBD_NO_COPY, ugen_isoc_rintr); 1165 (void)usbd_transfer(xfer); 1166 1167 mutex_enter(&sc->sc_lock); 1168 if (sce->state & UGEN_ASLP) { 1169 sce->state &= ~UGEN_ASLP; 1170 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1171 cv_signal(&sce->cv); 1172 } 1173 mutex_exit(&sc->sc_lock); 1174 selnotify(&sce->rsel, 0, 0); 1175 } 1176 1177 Static void 1178 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1179 usbd_status status) 1180 { 1181 struct ugen_endpoint *sce = addr; 1182 struct ugen_softc *sc = sce->sc; 1183 uint32_t count, n; 1184 char const *tbuf; 1185 usbd_status err; 1186 1187 /* Return if we are aborting. */ 1188 if (status == USBD_CANCELLED) 1189 return; 1190 1191 if (status != USBD_NORMAL_COMPLETION) { 1192 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1193 sce->state |= UGEN_RA_WB_STOP; 1194 if (status == USBD_STALLED) 1195 usbd_clear_endpoint_stall_async(sce->pipeh); 1196 return; 1197 } 1198 1199 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1200 1201 /* Keep track of how much is in the buffer. */ 1202 sce->ra_wb_used += count; 1203 1204 /* Copy data to buffer. */ 1205 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1206 n = min(count, sce->limit - sce->fill); 1207 memcpy(sce->fill, tbuf, n); 1208 tbuf += n; 1209 count -= n; 1210 sce->fill += n; 1211 if (sce->fill == sce->limit) 1212 sce->fill = sce->ibuf; 1213 if (count > 0) { 1214 memcpy(sce->fill, tbuf, count); 1215 sce->fill += count; 1216 } 1217 1218 /* Set up the next request if necessary. */ 1219 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1220 if (n > 0) { 1221 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1222 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1223 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1224 err = usbd_transfer(xfer); 1225 if (err != USBD_IN_PROGRESS) { 1226 printf("usbd_bulkra_intr: error=%d\n", err); 1227 /* 1228 * The transfer has not been queued. Setting STOP 1229 * will make us try again at the next read. 1230 */ 1231 sce->state |= UGEN_RA_WB_STOP; 1232 } 1233 } 1234 else 1235 sce->state |= UGEN_RA_WB_STOP; 1236 1237 mutex_enter(&sc->sc_lock); 1238 if (sce->state & UGEN_ASLP) { 1239 sce->state &= ~UGEN_ASLP; 1240 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1241 cv_signal(&sce->cv); 1242 } 1243 mutex_exit(&sc->sc_lock); 1244 selnotify(&sce->rsel, 0, 0); 1245 } 1246 1247 Static void 1248 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1249 usbd_status status) 1250 { 1251 struct ugen_endpoint *sce = addr; 1252 struct ugen_softc *sc = sce->sc; 1253 uint32_t count, n; 1254 char *tbuf; 1255 usbd_status err; 1256 1257 /* Return if we are aborting. */ 1258 if (status == USBD_CANCELLED) 1259 return; 1260 1261 if (status != USBD_NORMAL_COMPLETION) { 1262 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1263 sce->state |= UGEN_RA_WB_STOP; 1264 if (status == USBD_STALLED) 1265 usbd_clear_endpoint_stall_async(sce->pipeh); 1266 return; 1267 } 1268 1269 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1270 1271 /* Keep track of how much is in the buffer. */ 1272 sce->ra_wb_used -= count; 1273 1274 /* Update buffer pointers. */ 1275 sce->cur += count; 1276 if (sce->cur >= sce->limit) 1277 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1278 1279 /* Set up next request if necessary. */ 1280 if (sce->ra_wb_used > 0) { 1281 /* copy data from buffer */ 1282 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1283 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1284 n = min(count, sce->limit - sce->cur); 1285 memcpy(tbuf, sce->cur, n); 1286 tbuf += n; 1287 if (count - n > 0) 1288 memcpy(tbuf, sce->ibuf, count - n); 1289 1290 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1291 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1292 err = usbd_transfer(xfer); 1293 if (err != USBD_IN_PROGRESS) { 1294 printf("usbd_bulkwb_intr: error=%d\n", err); 1295 /* 1296 * The transfer has not been queued. Setting STOP 1297 * will make us try again at the next write. 1298 */ 1299 sce->state |= UGEN_RA_WB_STOP; 1300 } 1301 } 1302 else 1303 sce->state |= UGEN_RA_WB_STOP; 1304 1305 mutex_enter(&sc->sc_lock); 1306 if (sce->state & UGEN_ASLP) { 1307 sce->state &= ~UGEN_ASLP; 1308 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1309 cv_signal(&sce->cv); 1310 } 1311 mutex_exit(&sc->sc_lock); 1312 selnotify(&sce->rsel, 0, 0); 1313 } 1314 1315 Static usbd_status 1316 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1317 { 1318 usbd_interface_handle iface; 1319 usb_endpoint_descriptor_t *ed; 1320 usbd_status err; 1321 struct ugen_endpoint *sce; 1322 uint8_t niface, nendpt, endptno, endpt; 1323 int dir; 1324 1325 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1326 1327 err = usbd_interface_count(sc->sc_udev, &niface); 1328 if (err) 1329 return (err); 1330 if (ifaceidx < 0 || ifaceidx >= niface) 1331 return (USBD_INVAL); 1332 1333 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1334 if (err) 1335 return (err); 1336 err = usbd_endpoint_count(iface, &nendpt); 1337 if (err) 1338 return (err); 1339 /* XXX should only do this after setting new altno has succeeded */ 1340 for (endptno = 0; endptno < nendpt; endptno++) { 1341 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1342 endpt = ed->bEndpointAddress; 1343 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1344 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1345 sce->sc = 0; 1346 sce->edesc = 0; 1347 sce->iface = 0; 1348 } 1349 1350 /* change setting */ 1351 err = usbd_set_interface(iface, altno); 1352 if (err) 1353 return (err); 1354 1355 err = usbd_endpoint_count(iface, &nendpt); 1356 if (err) 1357 return (err); 1358 for (endptno = 0; endptno < nendpt; endptno++) { 1359 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1360 KASSERT(ed != NULL); 1361 endpt = ed->bEndpointAddress; 1362 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1363 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1364 sce->sc = sc; 1365 sce->edesc = ed; 1366 sce->iface = iface; 1367 } 1368 return (0); 1369 } 1370 1371 /* Retrieve a complete descriptor for a certain device and index. */ 1372 Static usb_config_descriptor_t * 1373 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1374 { 1375 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1376 int len; 1377 usbd_status err; 1378 1379 if (index == USB_CURRENT_CONFIG_INDEX) { 1380 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1381 len = UGETW(tdesc->wTotalLength); 1382 if (lenp) 1383 *lenp = len; 1384 cdesc = malloc(len, M_TEMP, M_WAITOK); 1385 memcpy(cdesc, tdesc, len); 1386 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1387 } else { 1388 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1389 if (err) 1390 return (0); 1391 len = UGETW(cdescr.wTotalLength); 1392 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1393 if (lenp) 1394 *lenp = len; 1395 cdesc = malloc(len, M_TEMP, M_WAITOK); 1396 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1397 if (err) { 1398 free(cdesc, M_TEMP); 1399 return (0); 1400 } 1401 } 1402 return (cdesc); 1403 } 1404 1405 Static int 1406 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1407 { 1408 usbd_interface_handle iface; 1409 usbd_status err; 1410 1411 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1412 if (err) 1413 return (-1); 1414 return (usbd_get_interface_altindex(iface)); 1415 } 1416 1417 Static int 1418 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1419 void *addr, int flag, struct lwp *l) 1420 { 1421 struct ugen_endpoint *sce; 1422 usbd_status err; 1423 usbd_interface_handle iface; 1424 struct usb_config_desc *cd; 1425 usb_config_descriptor_t *cdesc; 1426 struct usb_interface_desc *id; 1427 usb_interface_descriptor_t *idesc; 1428 struct usb_endpoint_desc *ed; 1429 usb_endpoint_descriptor_t *edesc; 1430 struct usb_alt_interface *ai; 1431 struct usb_string_desc *si; 1432 uint8_t conf, alt; 1433 1434 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1435 if (sc->sc_dying) 1436 return (EIO); 1437 1438 switch (cmd) { 1439 case FIONBIO: 1440 /* All handled in the upper FS layer. */ 1441 return (0); 1442 case USB_SET_SHORT_XFER: 1443 if (endpt == USB_CONTROL_ENDPOINT) 1444 return (EINVAL); 1445 /* This flag only affects read */ 1446 sce = &sc->sc_endpoints[endpt][IN]; 1447 if (sce == NULL || sce->pipeh == NULL) 1448 return (EINVAL); 1449 if (*(int *)addr) 1450 sce->state |= UGEN_SHORT_OK; 1451 else 1452 sce->state &= ~UGEN_SHORT_OK; 1453 return (0); 1454 case USB_SET_TIMEOUT: 1455 sce = &sc->sc_endpoints[endpt][IN]; 1456 if (sce == NULL 1457 /* XXX this shouldn't happen, but the distinction between 1458 input and output pipes isn't clear enough. 1459 || sce->pipeh == NULL */ 1460 ) 1461 return (EINVAL); 1462 sce->timeout = *(int *)addr; 1463 return (0); 1464 case USB_SET_BULK_RA: 1465 if (endpt == USB_CONTROL_ENDPOINT) 1466 return (EINVAL); 1467 sce = &sc->sc_endpoints[endpt][IN]; 1468 if (sce == NULL || sce->pipeh == NULL) 1469 return (EINVAL); 1470 edesc = sce->edesc; 1471 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1472 return (EINVAL); 1473 1474 if (*(int *)addr) { 1475 /* Only turn RA on if it's currently off. */ 1476 if (sce->state & UGEN_BULK_RA) 1477 return (0); 1478 1479 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1480 /* shouldn't happen */ 1481 return (EINVAL); 1482 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1483 if (sce->ra_wb_xfer == NULL) 1484 return (ENOMEM); 1485 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1486 /* 1487 * Set up a dmabuf because we reuse the xfer with 1488 * the same (max) request length like isoc. 1489 */ 1490 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1491 sce->ra_wb_xferlen) == 0) { 1492 usbd_free_xfer(sce->ra_wb_xfer); 1493 return (ENOMEM); 1494 } 1495 sce->ibuf = malloc(sce->ra_wb_bufsize, 1496 M_USBDEV, M_WAITOK); 1497 sce->fill = sce->cur = sce->ibuf; 1498 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1499 sce->ra_wb_used = 0; 1500 sce->state |= UGEN_BULK_RA; 1501 sce->state &= ~UGEN_RA_WB_STOP; 1502 /* Now start reading. */ 1503 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1504 NULL, 1505 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1506 USBD_NO_COPY, USBD_NO_TIMEOUT, 1507 ugen_bulkra_intr); 1508 err = usbd_transfer(sce->ra_wb_xfer); 1509 if (err != USBD_IN_PROGRESS) { 1510 sce->state &= ~UGEN_BULK_RA; 1511 free(sce->ibuf, M_USBDEV); 1512 sce->ibuf = NULL; 1513 usbd_free_xfer(sce->ra_wb_xfer); 1514 return (EIO); 1515 } 1516 } else { 1517 /* Only turn RA off if it's currently on. */ 1518 if (!(sce->state & UGEN_BULK_RA)) 1519 return (0); 1520 1521 sce->state &= ~UGEN_BULK_RA; 1522 usbd_abort_pipe(sce->pipeh); 1523 usbd_free_xfer(sce->ra_wb_xfer); 1524 /* 1525 * XXX Discard whatever's in the buffer, but we 1526 * should keep it around and drain the buffer 1527 * instead. 1528 */ 1529 free(sce->ibuf, M_USBDEV); 1530 sce->ibuf = NULL; 1531 } 1532 return (0); 1533 case USB_SET_BULK_WB: 1534 if (endpt == USB_CONTROL_ENDPOINT) 1535 return (EINVAL); 1536 sce = &sc->sc_endpoints[endpt][OUT]; 1537 if (sce == NULL || sce->pipeh == NULL) 1538 return (EINVAL); 1539 edesc = sce->edesc; 1540 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1541 return (EINVAL); 1542 1543 if (*(int *)addr) { 1544 /* Only turn WB on if it's currently off. */ 1545 if (sce->state & UGEN_BULK_WB) 1546 return (0); 1547 1548 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1549 /* shouldn't happen */ 1550 return (EINVAL); 1551 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1552 if (sce->ra_wb_xfer == NULL) 1553 return (ENOMEM); 1554 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1555 /* 1556 * Set up a dmabuf because we reuse the xfer with 1557 * the same (max) request length like isoc. 1558 */ 1559 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1560 sce->ra_wb_xferlen) == 0) { 1561 usbd_free_xfer(sce->ra_wb_xfer); 1562 return (ENOMEM); 1563 } 1564 sce->ibuf = malloc(sce->ra_wb_bufsize, 1565 M_USBDEV, M_WAITOK); 1566 sce->fill = sce->cur = sce->ibuf; 1567 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1568 sce->ra_wb_used = 0; 1569 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1570 } else { 1571 /* Only turn WB off if it's currently on. */ 1572 if (!(sce->state & UGEN_BULK_WB)) 1573 return (0); 1574 1575 sce->state &= ~UGEN_BULK_WB; 1576 /* 1577 * XXX Discard whatever's in the buffer, but we 1578 * should keep it around and keep writing to 1579 * drain the buffer instead. 1580 */ 1581 usbd_abort_pipe(sce->pipeh); 1582 usbd_free_xfer(sce->ra_wb_xfer); 1583 free(sce->ibuf, M_USBDEV); 1584 sce->ibuf = NULL; 1585 } 1586 return (0); 1587 case USB_SET_BULK_RA_OPT: 1588 case USB_SET_BULK_WB_OPT: 1589 { 1590 struct usb_bulk_ra_wb_opt *opt; 1591 1592 if (endpt == USB_CONTROL_ENDPOINT) 1593 return (EINVAL); 1594 opt = (struct usb_bulk_ra_wb_opt *)addr; 1595 if (cmd == USB_SET_BULK_RA_OPT) 1596 sce = &sc->sc_endpoints[endpt][IN]; 1597 else 1598 sce = &sc->sc_endpoints[endpt][OUT]; 1599 if (sce == NULL || sce->pipeh == NULL) 1600 return (EINVAL); 1601 if (opt->ra_wb_buffer_size < 1 || 1602 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1603 opt->ra_wb_request_size < 1 || 1604 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1605 return (EINVAL); 1606 /* 1607 * XXX These changes do not take effect until the 1608 * next time RA/WB mode is enabled but they ought to 1609 * take effect immediately. 1610 */ 1611 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1612 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1613 return (0); 1614 } 1615 default: 1616 break; 1617 } 1618 1619 if (endpt != USB_CONTROL_ENDPOINT) 1620 return (EINVAL); 1621 1622 switch (cmd) { 1623 #ifdef UGEN_DEBUG 1624 case USB_SETDEBUG: 1625 ugendebug = *(int *)addr; 1626 break; 1627 #endif 1628 case USB_GET_CONFIG: 1629 err = usbd_get_config(sc->sc_udev, &conf); 1630 if (err) 1631 return (EIO); 1632 *(int *)addr = conf; 1633 break; 1634 case USB_SET_CONFIG: 1635 if (!(flag & FWRITE)) 1636 return (EPERM); 1637 err = ugen_set_config(sc, *(int *)addr); 1638 switch (err) { 1639 case USBD_NORMAL_COMPLETION: 1640 break; 1641 case USBD_IN_USE: 1642 return (EBUSY); 1643 default: 1644 return (EIO); 1645 } 1646 break; 1647 case USB_GET_ALTINTERFACE: 1648 ai = (struct usb_alt_interface *)addr; 1649 err = usbd_device2interface_handle(sc->sc_udev, 1650 ai->uai_interface_index, &iface); 1651 if (err) 1652 return (EINVAL); 1653 idesc = usbd_get_interface_descriptor(iface); 1654 if (idesc == NULL) 1655 return (EIO); 1656 ai->uai_alt_no = idesc->bAlternateSetting; 1657 break; 1658 case USB_SET_ALTINTERFACE: 1659 if (!(flag & FWRITE)) 1660 return (EPERM); 1661 ai = (struct usb_alt_interface *)addr; 1662 err = usbd_device2interface_handle(sc->sc_udev, 1663 ai->uai_interface_index, &iface); 1664 if (err) 1665 return (EINVAL); 1666 err = ugen_set_interface(sc, ai->uai_interface_index, 1667 ai->uai_alt_no); 1668 if (err) 1669 return (EINVAL); 1670 break; 1671 case USB_GET_NO_ALT: 1672 ai = (struct usb_alt_interface *)addr; 1673 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1674 if (cdesc == NULL) 1675 return (EINVAL); 1676 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1677 if (idesc == NULL) { 1678 free(cdesc, M_TEMP); 1679 return (EINVAL); 1680 } 1681 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1682 idesc->bInterfaceNumber); 1683 free(cdesc, M_TEMP); 1684 break; 1685 case USB_GET_DEVICE_DESC: 1686 *(usb_device_descriptor_t *)addr = 1687 *usbd_get_device_descriptor(sc->sc_udev); 1688 break; 1689 case USB_GET_CONFIG_DESC: 1690 cd = (struct usb_config_desc *)addr; 1691 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1692 if (cdesc == NULL) 1693 return (EINVAL); 1694 cd->ucd_desc = *cdesc; 1695 free(cdesc, M_TEMP); 1696 break; 1697 case USB_GET_INTERFACE_DESC: 1698 id = (struct usb_interface_desc *)addr; 1699 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1700 if (cdesc == NULL) 1701 return (EINVAL); 1702 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1703 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1704 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1705 else 1706 alt = id->uid_alt_index; 1707 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1708 if (idesc == NULL) { 1709 free(cdesc, M_TEMP); 1710 return (EINVAL); 1711 } 1712 id->uid_desc = *idesc; 1713 free(cdesc, M_TEMP); 1714 break; 1715 case USB_GET_ENDPOINT_DESC: 1716 ed = (struct usb_endpoint_desc *)addr; 1717 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1718 if (cdesc == NULL) 1719 return (EINVAL); 1720 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1721 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1722 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1723 else 1724 alt = ed->ued_alt_index; 1725 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1726 alt, ed->ued_endpoint_index); 1727 if (edesc == NULL) { 1728 free(cdesc, M_TEMP); 1729 return (EINVAL); 1730 } 1731 ed->ued_desc = *edesc; 1732 free(cdesc, M_TEMP); 1733 break; 1734 case USB_GET_FULL_DESC: 1735 { 1736 int len; 1737 struct iovec iov; 1738 struct uio uio; 1739 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1740 int error; 1741 1742 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1743 if (cdesc == NULL) 1744 return (EINVAL); 1745 if (len > fd->ufd_size) 1746 len = fd->ufd_size; 1747 iov.iov_base = (void *)fd->ufd_data; 1748 iov.iov_len = len; 1749 uio.uio_iov = &iov; 1750 uio.uio_iovcnt = 1; 1751 uio.uio_resid = len; 1752 uio.uio_offset = 0; 1753 uio.uio_rw = UIO_READ; 1754 uio.uio_vmspace = l->l_proc->p_vmspace; 1755 error = uiomove((void *)cdesc, len, &uio); 1756 free(cdesc, M_TEMP); 1757 return (error); 1758 } 1759 case USB_GET_STRING_DESC: { 1760 int len; 1761 si = (struct usb_string_desc *)addr; 1762 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1763 si->usd_language_id, &si->usd_desc, &len); 1764 if (err) 1765 return (EINVAL); 1766 break; 1767 } 1768 case USB_DO_REQUEST: 1769 { 1770 struct usb_ctl_request *ur = (void *)addr; 1771 int len = UGETW(ur->ucr_request.wLength); 1772 struct iovec iov; 1773 struct uio uio; 1774 void *ptr = 0; 1775 usbd_status xerr; 1776 int error = 0; 1777 1778 if (!(flag & FWRITE)) 1779 return (EPERM); 1780 /* Avoid requests that would damage the bus integrity. */ 1781 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1782 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1783 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1784 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1785 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1786 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1787 return (EINVAL); 1788 1789 if (len < 0 || len > 32767) 1790 return (EINVAL); 1791 if (len != 0) { 1792 iov.iov_base = (void *)ur->ucr_data; 1793 iov.iov_len = len; 1794 uio.uio_iov = &iov; 1795 uio.uio_iovcnt = 1; 1796 uio.uio_resid = len; 1797 uio.uio_offset = 0; 1798 uio.uio_rw = 1799 ur->ucr_request.bmRequestType & UT_READ ? 1800 UIO_READ : UIO_WRITE; 1801 uio.uio_vmspace = l->l_proc->p_vmspace; 1802 ptr = malloc(len, M_TEMP, M_WAITOK); 1803 if (uio.uio_rw == UIO_WRITE) { 1804 error = uiomove(ptr, len, &uio); 1805 if (error) 1806 goto ret; 1807 } 1808 } 1809 sce = &sc->sc_endpoints[endpt][IN]; 1810 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1811 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1812 if (xerr) { 1813 error = EIO; 1814 goto ret; 1815 } 1816 if (len != 0) { 1817 if (uio.uio_rw == UIO_READ) { 1818 error = uiomove(ptr, len, &uio); 1819 if (error) 1820 goto ret; 1821 } 1822 } 1823 ret: 1824 if (ptr) 1825 free(ptr, M_TEMP); 1826 return (error); 1827 } 1828 case USB_GET_DEVICEINFO: 1829 usbd_fill_deviceinfo(sc->sc_udev, 1830 (struct usb_device_info *)addr, 0); 1831 break; 1832 #ifdef COMPAT_30 1833 case USB_GET_DEVICEINFO_OLD: 1834 usbd_fill_deviceinfo_old(sc->sc_udev, 1835 (struct usb_device_info_old *)addr, 0); 1836 1837 break; 1838 #endif 1839 default: 1840 return (EINVAL); 1841 } 1842 return (0); 1843 } 1844 1845 int 1846 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1847 { 1848 int endpt = UGENENDPOINT(dev); 1849 struct ugen_softc *sc; 1850 int error; 1851 1852 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1853 if (sc == NULL) 1854 return ENXIO; 1855 1856 sc->sc_refcnt++; 1857 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1858 if (--sc->sc_refcnt < 0) 1859 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1860 return (error); 1861 } 1862 1863 int 1864 ugenpoll(dev_t dev, int events, struct lwp *l) 1865 { 1866 struct ugen_softc *sc; 1867 struct ugen_endpoint *sce_in, *sce_out; 1868 int revents = 0; 1869 1870 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1871 if (sc == NULL) 1872 return ENXIO; 1873 1874 if (sc->sc_dying) 1875 return (POLLHUP); 1876 1877 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1878 return ENODEV; 1879 1880 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1881 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1882 if (sce_in == NULL && sce_out == NULL) 1883 return (POLLERR); 1884 #ifdef DIAGNOSTIC 1885 if (!sce_in->edesc && !sce_out->edesc) { 1886 printf("ugenpoll: no edesc\n"); 1887 return (POLLERR); 1888 } 1889 /* It's possible to have only one pipe open. */ 1890 if (!sce_in->pipeh && !sce_out->pipeh) { 1891 printf("ugenpoll: no pipe\n"); 1892 return (POLLERR); 1893 } 1894 #endif 1895 1896 mutex_enter(&sc->sc_lock); 1897 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1898 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1899 case UE_INTERRUPT: 1900 if (sce_in->q.c_cc > 0) 1901 revents |= events & (POLLIN | POLLRDNORM); 1902 else 1903 selrecord(l, &sce_in->rsel); 1904 break; 1905 case UE_ISOCHRONOUS: 1906 if (sce_in->cur != sce_in->fill) 1907 revents |= events & (POLLIN | POLLRDNORM); 1908 else 1909 selrecord(l, &sce_in->rsel); 1910 break; 1911 case UE_BULK: 1912 if (sce_in->state & UGEN_BULK_RA) { 1913 if (sce_in->ra_wb_used > 0) 1914 revents |= events & 1915 (POLLIN | POLLRDNORM); 1916 else 1917 selrecord(l, &sce_in->rsel); 1918 break; 1919 } 1920 /* 1921 * We have no easy way of determining if a read will 1922 * yield any data or a write will happen. 1923 * Pretend they will. 1924 */ 1925 revents |= events & (POLLIN | POLLRDNORM); 1926 break; 1927 default: 1928 break; 1929 } 1930 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1931 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1932 case UE_INTERRUPT: 1933 case UE_ISOCHRONOUS: 1934 /* XXX unimplemented */ 1935 break; 1936 case UE_BULK: 1937 if (sce_out->state & UGEN_BULK_WB) { 1938 if (sce_out->ra_wb_used < 1939 sce_out->limit - sce_out->ibuf) 1940 revents |= events & 1941 (POLLOUT | POLLWRNORM); 1942 else 1943 selrecord(l, &sce_out->rsel); 1944 break; 1945 } 1946 /* 1947 * We have no easy way of determining if a read will 1948 * yield any data or a write will happen. 1949 * Pretend they will. 1950 */ 1951 revents |= events & (POLLOUT | POLLWRNORM); 1952 break; 1953 default: 1954 break; 1955 } 1956 1957 mutex_exit(&sc->sc_lock); 1958 1959 return (revents); 1960 } 1961 1962 static void 1963 filt_ugenrdetach(struct knote *kn) 1964 { 1965 struct ugen_endpoint *sce = kn->kn_hook; 1966 struct ugen_softc *sc = sce->sc; 1967 1968 mutex_enter(&sc->sc_lock); 1969 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1970 mutex_exit(&sc->sc_lock); 1971 } 1972 1973 static int 1974 filt_ugenread_intr(struct knote *kn, long hint) 1975 { 1976 struct ugen_endpoint *sce = kn->kn_hook; 1977 1978 kn->kn_data = sce->q.c_cc; 1979 return (kn->kn_data > 0); 1980 } 1981 1982 static int 1983 filt_ugenread_isoc(struct knote *kn, long hint) 1984 { 1985 struct ugen_endpoint *sce = kn->kn_hook; 1986 1987 if (sce->cur == sce->fill) 1988 return (0); 1989 1990 if (sce->cur < sce->fill) 1991 kn->kn_data = sce->fill - sce->cur; 1992 else 1993 kn->kn_data = (sce->limit - sce->cur) + 1994 (sce->fill - sce->ibuf); 1995 1996 return (1); 1997 } 1998 1999 static int 2000 filt_ugenread_bulk(struct knote *kn, long hint) 2001 { 2002 struct ugen_endpoint *sce = kn->kn_hook; 2003 2004 if (!(sce->state & UGEN_BULK_RA)) 2005 /* 2006 * We have no easy way of determining if a read will 2007 * yield any data or a write will happen. 2008 * So, emulate "seltrue". 2009 */ 2010 return (filt_seltrue(kn, hint)); 2011 2012 if (sce->ra_wb_used == 0) 2013 return (0); 2014 2015 kn->kn_data = sce->ra_wb_used; 2016 2017 return (1); 2018 } 2019 2020 static int 2021 filt_ugenwrite_bulk(struct knote *kn, long hint) 2022 { 2023 struct ugen_endpoint *sce = kn->kn_hook; 2024 2025 if (!(sce->state & UGEN_BULK_WB)) 2026 /* 2027 * We have no easy way of determining if a read will 2028 * yield any data or a write will happen. 2029 * So, emulate "seltrue". 2030 */ 2031 return (filt_seltrue(kn, hint)); 2032 2033 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2034 return (0); 2035 2036 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2037 2038 return (1); 2039 } 2040 2041 static const struct filterops ugenread_intr_filtops = 2042 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2043 2044 static const struct filterops ugenread_isoc_filtops = 2045 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2046 2047 static const struct filterops ugenread_bulk_filtops = 2048 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2049 2050 static const struct filterops ugenwrite_bulk_filtops = 2051 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2052 2053 int 2054 ugenkqfilter(dev_t dev, struct knote *kn) 2055 { 2056 struct ugen_softc *sc; 2057 struct ugen_endpoint *sce; 2058 struct klist *klist; 2059 2060 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2061 if (sc == NULL) 2062 return ENXIO; 2063 2064 if (sc->sc_dying) 2065 return (ENXIO); 2066 2067 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2068 return ENODEV; 2069 2070 switch (kn->kn_filter) { 2071 case EVFILT_READ: 2072 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2073 if (sce == NULL) 2074 return (EINVAL); 2075 2076 klist = &sce->rsel.sel_klist; 2077 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2078 case UE_INTERRUPT: 2079 kn->kn_fop = &ugenread_intr_filtops; 2080 break; 2081 case UE_ISOCHRONOUS: 2082 kn->kn_fop = &ugenread_isoc_filtops; 2083 break; 2084 case UE_BULK: 2085 kn->kn_fop = &ugenread_bulk_filtops; 2086 break; 2087 default: 2088 return (EINVAL); 2089 } 2090 break; 2091 2092 case EVFILT_WRITE: 2093 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2094 if (sce == NULL) 2095 return (EINVAL); 2096 2097 klist = &sce->rsel.sel_klist; 2098 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2099 case UE_INTERRUPT: 2100 case UE_ISOCHRONOUS: 2101 /* XXX poll doesn't support this */ 2102 return (EINVAL); 2103 2104 case UE_BULK: 2105 kn->kn_fop = &ugenwrite_bulk_filtops; 2106 break; 2107 default: 2108 return (EINVAL); 2109 } 2110 break; 2111 2112 default: 2113 return (EINVAL); 2114 } 2115 2116 kn->kn_hook = sce; 2117 2118 mutex_enter(&sc->sc_lock); 2119 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2120 mutex_exit(&sc->sc_lock); 2121 2122 return (0); 2123 } 2124
Indexes created Mon Oct 20 01:09:56 GMT 2025