ugen.c revision 1.123
1 /* $NetBSD: ugen.c,v 1.123 2014/03/16 05:20:29 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 1.123 2014/03/16 05:20:29 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_flag = D_OTHER, 155 }; 156 157 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 158 usbd_status status); 159 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 160 usbd_status status); 161 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 162 usbd_status status); 163 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 164 usbd_status status); 165 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 166 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 167 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 168 void *, int, struct lwp *); 169 Static int ugen_set_config(struct ugen_softc *sc, int configno); 170 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 171 int index, int *lenp); 172 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 173 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 174 175 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 176 #define UGENENDPOINT(n) (minor(n) & 0xf) 177 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 178 179 int ugen_match(device_t, cfdata_t, void *); 180 void ugen_attach(device_t, device_t, void *); 181 int ugen_detach(device_t, int); 182 int ugen_activate(device_t, enum devact); 183 extern struct cfdriver ugen_cd; 184 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, ugen_attach, ugen_detach, ugen_activate); 185 186 /* toggle to control attach priority. -1 means "let autoconf decide" */ 187 int ugen_override = -1; 188 189 int 190 ugen_match(device_t parent, cfdata_t match, void *aux) 191 { 192 struct usb_attach_arg *uaa = aux; 193 int override; 194 195 if (ugen_override != -1) 196 override = ugen_override; 197 else 198 override = match->cf_flags & 1; 199 200 if (override) 201 return (UMATCH_HIGHEST); 202 else if (uaa->usegeneric) 203 return (UMATCH_GENERIC); 204 else 205 return (UMATCH_NONE); 206 } 207 208 void 209 ugen_attach(device_t parent, device_t self, void *aux) 210 { 211 struct ugen_softc *sc = device_private(self); 212 struct usb_attach_arg *uaa = aux; 213 usbd_device_handle udev; 214 char *devinfop; 215 usbd_status err; 216 int i, dir, conf; 217 218 aprint_naive("\n"); 219 aprint_normal("\n"); 220 221 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_USB); 222 cv_init(&sc->sc_detach_cv, "ugendet"); 223 224 devinfop = usbd_devinfo_alloc(uaa->device, 0); 225 aprint_normal_dev(self, "%s\n", devinfop); 226 usbd_devinfo_free(devinfop); 227 228 sc->sc_dev = self; 229 sc->sc_udev = udev = uaa->device; 230 231 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 232 for (dir = OUT; dir <= IN; dir++) { 233 struct ugen_endpoint *sce; 234 235 sce = &sc->sc_endpoints[i][dir]; 236 selinit(&sce->rsel); 237 cv_init(&sce->cv, "ugensce"); 238 } 239 } 240 241 /* First set configuration index 0, the default one for ugen. */ 242 err = usbd_set_config_index(udev, 0, 0); 243 if (err) { 244 aprint_error_dev(self, 245 "setting configuration index 0 failed\n"); 246 sc->sc_dying = 1; 247 return; 248 } 249 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 250 251 /* Set up all the local state for this configuration. */ 252 err = ugen_set_config(sc, conf); 253 if (err) { 254 aprint_error_dev(self, "setting configuration %d failed\n", 255 conf); 256 sc->sc_dying = 1; 257 return; 258 } 259 260 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 261 sc->sc_dev); 262 263 if (!pmf_device_register(self, NULL, NULL)) 264 aprint_error_dev(self, "couldn't establish power handler\n"); 265 266 return; 267 } 268 269 Static int 270 ugen_set_config(struct ugen_softc *sc, int configno) 271 { 272 usbd_device_handle dev = sc->sc_udev; 273 usb_config_descriptor_t *cdesc; 274 usbd_interface_handle iface; 275 usb_endpoint_descriptor_t *ed; 276 struct ugen_endpoint *sce; 277 u_int8_t niface, nendpt; 278 int ifaceno, endptno, endpt; 279 usbd_status err; 280 int dir, i; 281 282 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 283 device_xname(sc->sc_dev), configno, sc)); 284 285 /* 286 * We start at 1, not 0, because we don't care whether the 287 * control endpoint is open or not. It is always present. 288 */ 289 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 290 if (sc->sc_is_open[endptno]) { 291 DPRINTFN(1, 292 ("ugen_set_config: %s - endpoint %d is open\n", 293 device_xname(sc->sc_dev), endptno)); 294 return (USBD_IN_USE); 295 } 296 297 /* Avoid setting the current value. */ 298 cdesc = usbd_get_config_descriptor(dev); 299 if (!cdesc || cdesc->bConfigurationValue != configno) { 300 err = usbd_set_config_no(dev, configno, 1); 301 if (err) 302 return (err); 303 } 304 305 err = usbd_interface_count(dev, &niface); 306 if (err) 307 return (err); 308 309 /* Clear out the old info, but leave the selinfo and cv initialised. */ 310 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 311 for (dir = OUT; dir <= IN; dir++) { 312 sce = &sc->sc_endpoints[i][dir]; 313 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 314 } 315 } 316 317 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 318 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 319 err = usbd_device2interface_handle(dev, ifaceno, &iface); 320 if (err) 321 return (err); 322 err = usbd_endpoint_count(iface, &nendpt); 323 if (err) 324 return (err); 325 for (endptno = 0; endptno < nendpt; endptno++) { 326 ed = usbd_interface2endpoint_descriptor(iface,endptno); 327 KASSERT(ed != NULL); 328 endpt = ed->bEndpointAddress; 329 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 330 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 331 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 332 "(%d,%d), sce=%p\n", 333 endptno, endpt, UE_GET_ADDR(endpt), 334 UE_GET_DIR(endpt), sce)); 335 sce->sc = sc; 336 sce->edesc = ed; 337 sce->iface = iface; 338 } 339 } 340 return (USBD_NORMAL_COMPLETION); 341 } 342 343 int 344 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 345 { 346 struct ugen_softc *sc; 347 int unit = UGENUNIT(dev); 348 int endpt = UGENENDPOINT(dev); 349 usb_endpoint_descriptor_t *edesc; 350 struct ugen_endpoint *sce; 351 int dir, isize; 352 usbd_status err; 353 usbd_xfer_handle xfer; 354 void *tbuf; 355 int i, j; 356 357 sc = device_lookup_private(&ugen_cd, unit); 358 if (sc == NULL) 359 return ENXIO; 360 361 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 362 flag, mode, unit, endpt)); 363 364 if (sc == NULL || sc->sc_dying) 365 return (ENXIO); 366 367 /* The control endpoint allows multiple opens. */ 368 if (endpt == USB_CONTROL_ENDPOINT) { 369 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 370 return (0); 371 } 372 373 if (sc->sc_is_open[endpt]) 374 return (EBUSY); 375 376 /* Make sure there are pipes for all directions. */ 377 for (dir = OUT; dir <= IN; dir++) { 378 if (flag & (dir == OUT ? FWRITE : FREAD)) { 379 sce = &sc->sc_endpoints[endpt][dir]; 380 if (sce == 0 || sce->edesc == 0) 381 return (ENXIO); 382 } 383 } 384 385 /* Actually open the pipes. */ 386 /* XXX Should back out properly if it fails. */ 387 for (dir = OUT; dir <= IN; dir++) { 388 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 389 continue; 390 sce = &sc->sc_endpoints[endpt][dir]; 391 sce->state = 0; 392 sce->timeout = USBD_NO_TIMEOUT; 393 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 394 sc, endpt, dir, sce)); 395 edesc = sce->edesc; 396 switch (edesc->bmAttributes & UE_XFERTYPE) { 397 case UE_INTERRUPT: 398 if (dir == OUT) { 399 err = usbd_open_pipe(sce->iface, 400 edesc->bEndpointAddress, 0, &sce->pipeh); 401 if (err) 402 return (EIO); 403 break; 404 } 405 isize = UGETW(edesc->wMaxPacketSize); 406 if (isize == 0) /* shouldn't happen */ 407 return (EINVAL); 408 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 409 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 410 endpt, isize)); 411 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 412 free(sce->ibuf, M_USBDEV); 413 sce->ibuf = NULL; 414 return (ENOMEM); 415 } 416 err = usbd_open_pipe_intr(sce->iface, 417 edesc->bEndpointAddress, 418 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 419 sce->ibuf, isize, ugenintr, 420 USBD_DEFAULT_INTERVAL); 421 if (err) { 422 clfree(&sce->q); 423 free(sce->ibuf, M_USBDEV); 424 sce->ibuf = NULL; 425 return (EIO); 426 } 427 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 428 break; 429 case UE_BULK: 430 err = usbd_open_pipe(sce->iface, 431 edesc->bEndpointAddress, 0, &sce->pipeh); 432 if (err) 433 return (EIO); 434 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 435 /* 436 * Use request size for non-RA/WB transfers 437 * as the default. 438 */ 439 sce->ra_wb_reqsize = UGEN_BBSIZE; 440 break; 441 case UE_ISOCHRONOUS: 442 if (dir == OUT) 443 return (EINVAL); 444 isize = UGETW(edesc->wMaxPacketSize); 445 if (isize == 0) /* shouldn't happen */ 446 return (EINVAL); 447 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 448 M_USBDEV, M_WAITOK); 449 sce->cur = sce->fill = sce->ibuf; 450 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 451 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 452 endpt, isize)); 453 err = usbd_open_pipe(sce->iface, 454 edesc->bEndpointAddress, 0, &sce->pipeh); 455 if (err) { 456 free(sce->ibuf, M_USBDEV); 457 sce->ibuf = NULL; 458 return (EIO); 459 } 460 for(i = 0; i < UGEN_NISOREQS; ++i) { 461 sce->isoreqs[i].sce = sce; 462 xfer = usbd_alloc_xfer(sc->sc_udev); 463 if (xfer == 0) 464 goto bad; 465 sce->isoreqs[i].xfer = xfer; 466 tbuf = usbd_alloc_buffer 467 (xfer, isize * UGEN_NISORFRMS); 468 if (tbuf == 0) { 469 i++; 470 goto bad; 471 } 472 sce->isoreqs[i].dmabuf = tbuf; 473 for(j = 0; j < UGEN_NISORFRMS; ++j) 474 sce->isoreqs[i].sizes[j] = isize; 475 usbd_setup_isoc_xfer 476 (xfer, sce->pipeh, &sce->isoreqs[i], 477 sce->isoreqs[i].sizes, 478 UGEN_NISORFRMS, USBD_NO_COPY, 479 ugen_isoc_rintr); 480 (void)usbd_transfer(xfer); 481 } 482 DPRINTFN(5, ("ugenopen: isoc open done\n")); 483 break; 484 bad: 485 while (--i >= 0) /* implicit buffer free */ 486 usbd_free_xfer(sce->isoreqs[i].xfer); 487 usbd_close_pipe(sce->pipeh); 488 sce->pipeh = NULL; 489 free(sce->ibuf, M_USBDEV); 490 sce->ibuf = NULL; 491 return (ENOMEM); 492 case UE_CONTROL: 493 sce->timeout = USBD_DEFAULT_TIMEOUT; 494 return (EINVAL); 495 } 496 } 497 sc->sc_is_open[endpt] = 1; 498 return (0); 499 } 500 501 int 502 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 503 { 504 int endpt = UGENENDPOINT(dev); 505 struct ugen_softc *sc; 506 struct ugen_endpoint *sce; 507 int dir; 508 int i; 509 510 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 511 if (sc == NULL) 512 return ENXIO; 513 514 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 515 flag, mode, UGENUNIT(dev), endpt)); 516 517 #ifdef DIAGNOSTIC 518 if (!sc->sc_is_open[endpt]) { 519 printf("ugenclose: not open\n"); 520 return (EINVAL); 521 } 522 #endif 523 524 if (endpt == USB_CONTROL_ENDPOINT) { 525 DPRINTFN(5, ("ugenclose: close control\n")); 526 sc->sc_is_open[endpt] = 0; 527 return (0); 528 } 529 530 for (dir = OUT; dir <= IN; dir++) { 531 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 532 continue; 533 sce = &sc->sc_endpoints[endpt][dir]; 534 if (sce == NULL || sce->pipeh == NULL) 535 continue; 536 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 537 endpt, dir, sce)); 538 539 usbd_abort_pipe(sce->pipeh); 540 usbd_close_pipe(sce->pipeh); 541 sce->pipeh = NULL; 542 543 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 544 case UE_INTERRUPT: 545 ndflush(&sce->q, sce->q.c_cc); 546 clfree(&sce->q); 547 break; 548 case UE_ISOCHRONOUS: 549 for (i = 0; i < UGEN_NISOREQS; ++i) 550 usbd_free_xfer(sce->isoreqs[i].xfer); 551 break; 552 case UE_BULK: 553 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 554 /* ibuf freed below */ 555 usbd_free_xfer(sce->ra_wb_xfer); 556 break; 557 default: 558 break; 559 } 560 561 if (sce->ibuf != NULL) { 562 free(sce->ibuf, M_USBDEV); 563 sce->ibuf = NULL; 564 } 565 } 566 sc->sc_is_open[endpt] = 0; 567 568 return (0); 569 } 570 571 Static int 572 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 573 { 574 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 575 u_int32_t n, tn; 576 usbd_xfer_handle xfer; 577 usbd_status err; 578 int error = 0; 579 580 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 581 582 if (sc->sc_dying) 583 return (EIO); 584 585 if (endpt == USB_CONTROL_ENDPOINT) 586 return (ENODEV); 587 588 #ifdef DIAGNOSTIC 589 if (sce->edesc == NULL) { 590 printf("ugenread: no edesc\n"); 591 return (EIO); 592 } 593 if (sce->pipeh == NULL) { 594 printf("ugenread: no pipe\n"); 595 return (EIO); 596 } 597 #endif 598 599 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 600 case UE_INTERRUPT: 601 /* Block until activity occurred. */ 602 mutex_enter(&sc->sc_lock); 603 while (sce->q.c_cc == 0) { 604 if (flag & IO_NDELAY) { 605 mutex_exit(&sc->sc_lock); 606 return (EWOULDBLOCK); 607 } 608 sce->state |= UGEN_ASLP; 609 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 610 /* "ugenri" */ 611 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 612 mstohz(sce->timeout)); 613 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 614 if (sc->sc_dying) 615 error = EIO; 616 if (error) { 617 sce->state &= ~UGEN_ASLP; 618 break; 619 } 620 } 621 mutex_exit(&sc->sc_lock); 622 623 /* Transfer as many chunks as possible. */ 624 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 625 n = min(sce->q.c_cc, uio->uio_resid); 626 if (n > sizeof(sc->sc_buffer)) 627 n = sizeof(sc->sc_buffer); 628 629 /* Remove a small chunk from the input queue. */ 630 q_to_b(&sce->q, sc->sc_buffer, n); 631 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 632 633 /* Copy the data to the user process. */ 634 error = uiomove(sc->sc_buffer, n, uio); 635 if (error) 636 break; 637 } 638 break; 639 case UE_BULK: 640 if (sce->state & UGEN_BULK_RA) { 641 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 642 uio->uio_resid, sce->ra_wb_used)); 643 xfer = sce->ra_wb_xfer; 644 645 mutex_enter(&sc->sc_lock); 646 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 647 mutex_exit(&sc->sc_lock); 648 return (EWOULDBLOCK); 649 } 650 while (uio->uio_resid > 0 && !error) { 651 while (sce->ra_wb_used == 0) { 652 sce->state |= UGEN_ASLP; 653 DPRINTFN(5, 654 ("ugenread: sleep on %p\n", 655 sce)); 656 /* "ugenrb" */ 657 error = cv_timedwait_sig(&sce->cv, 658 &sc->sc_lock, mstohz(sce->timeout)); 659 DPRINTFN(5, 660 ("ugenread: woke, error=%d\n", 661 error)); 662 if (sc->sc_dying) 663 error = EIO; 664 if (error) { 665 sce->state &= ~UGEN_ASLP; 666 break; 667 } 668 } 669 670 /* Copy data to the process. */ 671 while (uio->uio_resid > 0 672 && sce->ra_wb_used > 0) { 673 n = min(uio->uio_resid, 674 sce->ra_wb_used); 675 n = min(n, sce->limit - sce->cur); 676 error = uiomove(sce->cur, n, uio); 677 if (error) 678 break; 679 sce->cur += n; 680 sce->ra_wb_used -= n; 681 if (sce->cur == sce->limit) 682 sce->cur = sce->ibuf; 683 } 684 685 /* 686 * If the transfers stopped because the 687 * buffer was full, restart them. 688 */ 689 if (sce->state & UGEN_RA_WB_STOP && 690 sce->ra_wb_used < sce->limit - sce->ibuf) { 691 n = (sce->limit - sce->ibuf) 692 - sce->ra_wb_used; 693 usbd_setup_xfer(xfer, 694 sce->pipeh, sce, NULL, 695 min(n, sce->ra_wb_xferlen), 696 USBD_NO_COPY, USBD_NO_TIMEOUT, 697 ugen_bulkra_intr); 698 sce->state &= ~UGEN_RA_WB_STOP; 699 err = usbd_transfer(xfer); 700 if (err != USBD_IN_PROGRESS) 701 /* 702 * The transfer has not been 703 * queued. Setting STOP 704 * will make us try 705 * again at the next read. 706 */ 707 sce->state |= UGEN_RA_WB_STOP; 708 } 709 } 710 mutex_exit(&sc->sc_lock); 711 break; 712 } 713 xfer = usbd_alloc_xfer(sc->sc_udev); 714 if (xfer == 0) 715 return (ENOMEM); 716 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 717 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 718 tn = n; 719 err = usbd_bulk_transfer( 720 xfer, sce->pipeh, 721 sce->state & UGEN_SHORT_OK ? 722 USBD_SHORT_XFER_OK : 0, 723 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 724 if (err) { 725 if (err == USBD_INTERRUPTED) 726 error = EINTR; 727 else if (err == USBD_TIMEOUT) 728 error = ETIMEDOUT; 729 else 730 error = EIO; 731 break; 732 } 733 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 734 error = uiomove(sc->sc_buffer, tn, uio); 735 if (error || tn < n) 736 break; 737 } 738 usbd_free_xfer(xfer); 739 break; 740 case UE_ISOCHRONOUS: 741 mutex_enter(&sc->sc_lock); 742 while (sce->cur == sce->fill) { 743 if (flag & IO_NDELAY) { 744 mutex_exit(&sc->sc_lock); 745 return (EWOULDBLOCK); 746 } 747 sce->state |= UGEN_ASLP; 748 /* "ugenri" */ 749 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 750 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 751 mstohz(sce->timeout)); 752 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 753 if (sc->sc_dying) 754 error = EIO; 755 if (error) { 756 sce->state &= ~UGEN_ASLP; 757 break; 758 } 759 } 760 761 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 762 if(sce->fill > sce->cur) 763 n = min(sce->fill - sce->cur, uio->uio_resid); 764 else 765 n = min(sce->limit - sce->cur, uio->uio_resid); 766 767 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 768 769 /* Copy the data to the user process. */ 770 error = uiomove(sce->cur, n, uio); 771 if (error) 772 break; 773 sce->cur += n; 774 if (sce->cur >= sce->limit) 775 sce->cur = sce->ibuf; 776 } 777 mutex_exit(&sc->sc_lock); 778 break; 779 780 781 default: 782 return (ENXIO); 783 } 784 return (error); 785 } 786 787 int 788 ugenread(dev_t dev, struct uio *uio, int flag) 789 { 790 int endpt = UGENENDPOINT(dev); 791 struct ugen_softc *sc; 792 int error; 793 794 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 795 if (sc == NULL) 796 return ENXIO; 797 798 mutex_enter(&sc->sc_lock); 799 sc->sc_refcnt++; 800 mutex_exit(&sc->sc_lock); 801 802 error = ugen_do_read(sc, endpt, uio, flag); 803 804 mutex_enter(&sc->sc_lock); 805 if (--sc->sc_refcnt < 0) 806 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 807 mutex_exit(&sc->sc_lock); 808 809 return (error); 810 } 811 812 Static int 813 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 814 int flag) 815 { 816 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 817 u_int32_t n; 818 int error = 0; 819 u_int32_t tn; 820 char *dbuf; 821 usbd_xfer_handle xfer; 822 usbd_status err; 823 824 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 825 826 if (sc->sc_dying) 827 return (EIO); 828 829 if (endpt == USB_CONTROL_ENDPOINT) 830 return (ENODEV); 831 832 #ifdef DIAGNOSTIC 833 if (sce->edesc == NULL) { 834 printf("ugenwrite: no edesc\n"); 835 return (EIO); 836 } 837 if (sce->pipeh == NULL) { 838 printf("ugenwrite: no pipe\n"); 839 return (EIO); 840 } 841 #endif 842 843 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 844 case UE_BULK: 845 if (sce->state & UGEN_BULK_WB) { 846 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 847 uio->uio_resid, sce->ra_wb_used)); 848 xfer = sce->ra_wb_xfer; 849 850 mutex_enter(&sc->sc_lock); 851 if (sce->ra_wb_used == sce->limit - sce->ibuf && 852 flag & IO_NDELAY) { 853 mutex_exit(&sc->sc_lock); 854 return (EWOULDBLOCK); 855 } 856 while (uio->uio_resid > 0 && !error) { 857 while (sce->ra_wb_used == 858 sce->limit - sce->ibuf) { 859 sce->state |= UGEN_ASLP; 860 DPRINTFN(5, 861 ("ugenwrite: sleep on %p\n", 862 sce)); 863 /* "ugenwb" */ 864 error = cv_timedwait_sig(&sce->cv, 865 &sc->sc_lock, mstohz(sce->timeout)); 866 DPRINTFN(5, 867 ("ugenwrite: woke, error=%d\n", 868 error)); 869 if (sc->sc_dying) 870 error = EIO; 871 if (error) { 872 sce->state &= ~UGEN_ASLP; 873 break; 874 } 875 } 876 877 /* Copy data from the process. */ 878 while (uio->uio_resid > 0 && 879 sce->ra_wb_used < sce->limit - sce->ibuf) { 880 n = min(uio->uio_resid, 881 (sce->limit - sce->ibuf) 882 - sce->ra_wb_used); 883 n = min(n, sce->limit - sce->fill); 884 error = uiomove(sce->fill, n, uio); 885 if (error) 886 break; 887 sce->fill += n; 888 sce->ra_wb_used += n; 889 if (sce->fill == sce->limit) 890 sce->fill = sce->ibuf; 891 } 892 893 /* 894 * If the transfers stopped because the 895 * buffer was empty, restart them. 896 */ 897 if (sce->state & UGEN_RA_WB_STOP && 898 sce->ra_wb_used > 0) { 899 dbuf = (char *)usbd_get_buffer(xfer); 900 n = min(sce->ra_wb_used, 901 sce->ra_wb_xferlen); 902 tn = min(n, sce->limit - sce->cur); 903 memcpy(dbuf, sce->cur, tn); 904 dbuf += tn; 905 if (n - tn > 0) 906 memcpy(dbuf, sce->ibuf, 907 n - tn); 908 usbd_setup_xfer(xfer, 909 sce->pipeh, sce, NULL, n, 910 USBD_NO_COPY, USBD_NO_TIMEOUT, 911 ugen_bulkwb_intr); 912 sce->state &= ~UGEN_RA_WB_STOP; 913 err = usbd_transfer(xfer); 914 if (err != USBD_IN_PROGRESS) 915 /* 916 * The transfer has not been 917 * queued. Setting STOP 918 * will make us try again 919 * at the next read. 920 */ 921 sce->state |= UGEN_RA_WB_STOP; 922 } 923 } 924 mutex_exit(&sc->sc_lock); 925 break; 926 } 927 xfer = usbd_alloc_xfer(sc->sc_udev); 928 if (xfer == 0) 929 return (EIO); 930 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 931 error = uiomove(sc->sc_buffer, n, uio); 932 if (error) 933 break; 934 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 935 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 936 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 937 if (err) { 938 if (err == USBD_INTERRUPTED) 939 error = EINTR; 940 else if (err == USBD_TIMEOUT) 941 error = ETIMEDOUT; 942 else 943 error = EIO; 944 break; 945 } 946 } 947 usbd_free_xfer(xfer); 948 break; 949 case UE_INTERRUPT: 950 xfer = usbd_alloc_xfer(sc->sc_udev); 951 if (xfer == 0) 952 return (EIO); 953 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 954 uio->uio_resid)) != 0) { 955 error = uiomove(sc->sc_buffer, n, uio); 956 if (error) 957 break; 958 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 959 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 960 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 961 if (err) { 962 if (err == USBD_INTERRUPTED) 963 error = EINTR; 964 else if (err == USBD_TIMEOUT) 965 error = ETIMEDOUT; 966 else 967 error = EIO; 968 break; 969 } 970 } 971 usbd_free_xfer(xfer); 972 break; 973 default: 974 return (ENXIO); 975 } 976 return (error); 977 } 978 979 int 980 ugenwrite(dev_t dev, struct uio *uio, int flag) 981 { 982 int endpt = UGENENDPOINT(dev); 983 struct ugen_softc *sc; 984 int error; 985 986 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 987 if (sc == NULL) 988 return ENXIO; 989 990 mutex_enter(&sc->sc_lock); 991 sc->sc_refcnt++; 992 mutex_exit(&sc->sc_lock); 993 994 error = ugen_do_write(sc, endpt, uio, flag); 995 996 mutex_enter(&sc->sc_lock); 997 if (--sc->sc_refcnt < 0) 998 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 999 mutex_exit(&sc->sc_lock); 1000 1001 return (error); 1002 } 1003 1004 int 1005 ugen_activate(device_t self, enum devact act) 1006 { 1007 struct ugen_softc *sc = device_private(self); 1008 1009 switch (act) { 1010 case DVACT_DEACTIVATE: 1011 sc->sc_dying = 1; 1012 return 0; 1013 default: 1014 return EOPNOTSUPP; 1015 } 1016 } 1017 1018 int 1019 ugen_detach(device_t self, int flags) 1020 { 1021 struct ugen_softc *sc = device_private(self); 1022 struct ugen_endpoint *sce; 1023 int i, dir; 1024 int maj, mn; 1025 1026 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1027 1028 sc->sc_dying = 1; 1029 pmf_device_deregister(self); 1030 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1031 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1032 for (dir = OUT; dir <= IN; dir++) { 1033 sce = &sc->sc_endpoints[i][dir]; 1034 if (sce && sce->pipeh) 1035 usbd_abort_pipe(sce->pipeh); 1036 } 1037 } 1038 1039 mutex_enter(&sc->sc_lock); 1040 if (--sc->sc_refcnt >= 0) { 1041 /* Wake everyone */ 1042 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1043 cv_signal(&sc->sc_endpoints[i][IN].cv); 1044 /* Wait for processes to go away. */ 1045 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1046 } 1047 mutex_exit(&sc->sc_lock); 1048 1049 /* locate the major number */ 1050 maj = cdevsw_lookup_major(&ugen_cdevsw); 1051 1052 /* Nuke the vnodes for any open instances (calls close). */ 1053 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1054 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1055 1056 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1057 sc->sc_dev); 1058 1059 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1060 for (dir = OUT; dir <= IN; dir++) { 1061 sce = &sc->sc_endpoints[i][dir]; 1062 seldestroy(&sce->rsel); 1063 cv_destroy(&sce->cv); 1064 } 1065 } 1066 1067 cv_destroy(&sc->sc_detach_cv); 1068 mutex_destroy(&sc->sc_lock); 1069 1070 return (0); 1071 } 1072 1073 Static void 1074 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1075 { 1076 struct ugen_endpoint *sce = addr; 1077 struct ugen_softc *sc = sce->sc; 1078 u_int32_t count; 1079 u_char *ibuf; 1080 1081 if (status == USBD_CANCELLED) 1082 return; 1083 1084 if (status != USBD_NORMAL_COMPLETION) { 1085 DPRINTF(("ugenintr: status=%d\n", status)); 1086 if (status == USBD_STALLED) 1087 usbd_clear_endpoint_stall_async(sce->pipeh); 1088 return; 1089 } 1090 1091 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1092 ibuf = sce->ibuf; 1093 1094 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1095 xfer, status, count)); 1096 DPRINTFN(5, (" data = %02x %02x %02x\n", 1097 ibuf[0], ibuf[1], ibuf[2])); 1098 1099 (void)b_to_q(ibuf, count, &sce->q); 1100 1101 mutex_enter(&sc->sc_lock); 1102 if (sce->state & UGEN_ASLP) { 1103 sce->state &= ~UGEN_ASLP; 1104 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1105 cv_signal(&sce->cv); 1106 } 1107 mutex_exit(&sc->sc_lock); 1108 selnotify(&sce->rsel, 0, 0); 1109 } 1110 1111 Static void 1112 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1113 usbd_status status) 1114 { 1115 struct isoreq *req = addr; 1116 struct ugen_endpoint *sce = req->sce; 1117 struct ugen_softc *sc = sce->sc; 1118 u_int32_t count, n; 1119 int i, isize; 1120 1121 /* Return if we are aborting. */ 1122 if (status == USBD_CANCELLED) 1123 return; 1124 1125 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1126 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1127 (long)(req - sce->isoreqs), count)); 1128 1129 /* throw away oldest input if the buffer is full */ 1130 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1131 sce->cur += count; 1132 if(sce->cur >= sce->limit) 1133 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1134 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1135 count)); 1136 } 1137 1138 isize = UGETW(sce->edesc->wMaxPacketSize); 1139 for (i = 0; i < UGEN_NISORFRMS; i++) { 1140 u_int32_t actlen = req->sizes[i]; 1141 char const *tbuf = (char const *)req->dmabuf + isize * i; 1142 1143 /* copy data to buffer */ 1144 while (actlen > 0) { 1145 n = min(actlen, sce->limit - sce->fill); 1146 memcpy(sce->fill, tbuf, n); 1147 1148 tbuf += n; 1149 actlen -= n; 1150 sce->fill += n; 1151 if(sce->fill == sce->limit) 1152 sce->fill = sce->ibuf; 1153 } 1154 1155 /* setup size for next transfer */ 1156 req->sizes[i] = isize; 1157 } 1158 1159 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1160 USBD_NO_COPY, ugen_isoc_rintr); 1161 (void)usbd_transfer(xfer); 1162 1163 mutex_enter(&sc->sc_lock); 1164 if (sce->state & UGEN_ASLP) { 1165 sce->state &= ~UGEN_ASLP; 1166 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1167 cv_signal(&sce->cv); 1168 } 1169 mutex_exit(&sc->sc_lock); 1170 selnotify(&sce->rsel, 0, 0); 1171 } 1172 1173 Static void 1174 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1175 usbd_status status) 1176 { 1177 struct ugen_endpoint *sce = addr; 1178 struct ugen_softc *sc = sce->sc; 1179 u_int32_t count, n; 1180 char const *tbuf; 1181 usbd_status err; 1182 1183 /* Return if we are aborting. */ 1184 if (status == USBD_CANCELLED) 1185 return; 1186 1187 if (status != USBD_NORMAL_COMPLETION) { 1188 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1189 sce->state |= UGEN_RA_WB_STOP; 1190 if (status == USBD_STALLED) 1191 usbd_clear_endpoint_stall_async(sce->pipeh); 1192 return; 1193 } 1194 1195 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1196 1197 /* Keep track of how much is in the buffer. */ 1198 sce->ra_wb_used += count; 1199 1200 /* Copy data to buffer. */ 1201 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1202 n = min(count, sce->limit - sce->fill); 1203 memcpy(sce->fill, tbuf, n); 1204 tbuf += n; 1205 count -= n; 1206 sce->fill += n; 1207 if (sce->fill == sce->limit) 1208 sce->fill = sce->ibuf; 1209 if (count > 0) { 1210 memcpy(sce->fill, tbuf, count); 1211 sce->fill += count; 1212 } 1213 1214 /* Set up the next request if necessary. */ 1215 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1216 if (n > 0) { 1217 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1218 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1219 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1220 err = usbd_transfer(xfer); 1221 if (err != USBD_IN_PROGRESS) { 1222 printf("usbd_bulkra_intr: error=%d\n", err); 1223 /* 1224 * The transfer has not been queued. Setting STOP 1225 * will make us try again at the next read. 1226 */ 1227 sce->state |= UGEN_RA_WB_STOP; 1228 } 1229 } 1230 else 1231 sce->state |= UGEN_RA_WB_STOP; 1232 1233 mutex_enter(&sc->sc_lock); 1234 if (sce->state & UGEN_ASLP) { 1235 sce->state &= ~UGEN_ASLP; 1236 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1237 cv_signal(&sce->cv); 1238 } 1239 mutex_exit(&sc->sc_lock); 1240 selnotify(&sce->rsel, 0, 0); 1241 } 1242 1243 Static void 1244 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1245 usbd_status status) 1246 { 1247 struct ugen_endpoint *sce = addr; 1248 struct ugen_softc *sc = sce->sc; 1249 u_int32_t count, n; 1250 char *tbuf; 1251 usbd_status err; 1252 1253 /* Return if we are aborting. */ 1254 if (status == USBD_CANCELLED) 1255 return; 1256 1257 if (status != USBD_NORMAL_COMPLETION) { 1258 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1259 sce->state |= UGEN_RA_WB_STOP; 1260 if (status == USBD_STALLED) 1261 usbd_clear_endpoint_stall_async(sce->pipeh); 1262 return; 1263 } 1264 1265 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1266 1267 /* Keep track of how much is in the buffer. */ 1268 sce->ra_wb_used -= count; 1269 1270 /* Update buffer pointers. */ 1271 sce->cur += count; 1272 if (sce->cur >= sce->limit) 1273 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1274 1275 /* Set up next request if necessary. */ 1276 if (sce->ra_wb_used > 0) { 1277 /* copy data from buffer */ 1278 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1279 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1280 n = min(count, sce->limit - sce->cur); 1281 memcpy(tbuf, sce->cur, n); 1282 tbuf += n; 1283 if (count - n > 0) 1284 memcpy(tbuf, sce->ibuf, count - n); 1285 1286 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1287 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1288 err = usbd_transfer(xfer); 1289 if (err != USBD_IN_PROGRESS) { 1290 printf("usbd_bulkwb_intr: error=%d\n", err); 1291 /* 1292 * The transfer has not been queued. Setting STOP 1293 * will make us try again at the next write. 1294 */ 1295 sce->state |= UGEN_RA_WB_STOP; 1296 } 1297 } 1298 else 1299 sce->state |= UGEN_RA_WB_STOP; 1300 1301 mutex_enter(&sc->sc_lock); 1302 if (sce->state & UGEN_ASLP) { 1303 sce->state &= ~UGEN_ASLP; 1304 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1305 cv_signal(&sce->cv); 1306 } 1307 mutex_exit(&sc->sc_lock); 1308 selnotify(&sce->rsel, 0, 0); 1309 } 1310 1311 Static usbd_status 1312 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1313 { 1314 usbd_interface_handle iface; 1315 usb_endpoint_descriptor_t *ed; 1316 usbd_status err; 1317 struct ugen_endpoint *sce; 1318 u_int8_t niface, nendpt, endptno, endpt; 1319 int dir; 1320 1321 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1322 1323 err = usbd_interface_count(sc->sc_udev, &niface); 1324 if (err) 1325 return (err); 1326 if (ifaceidx < 0 || ifaceidx >= niface) 1327 return (USBD_INVAL); 1328 1329 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1330 if (err) 1331 return (err); 1332 err = usbd_endpoint_count(iface, &nendpt); 1333 if (err) 1334 return (err); 1335 /* XXX should only do this after setting new altno has succeeded */ 1336 for (endptno = 0; endptno < nendpt; endptno++) { 1337 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1338 endpt = ed->bEndpointAddress; 1339 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1340 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1341 sce->sc = 0; 1342 sce->edesc = 0; 1343 sce->iface = 0; 1344 } 1345 1346 /* change setting */ 1347 err = usbd_set_interface(iface, altno); 1348 if (err) 1349 return (err); 1350 1351 err = usbd_endpoint_count(iface, &nendpt); 1352 if (err) 1353 return (err); 1354 for (endptno = 0; endptno < nendpt; endptno++) { 1355 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1356 KASSERT(ed != NULL); 1357 endpt = ed->bEndpointAddress; 1358 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1359 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1360 sce->sc = sc; 1361 sce->edesc = ed; 1362 sce->iface = iface; 1363 } 1364 return (0); 1365 } 1366 1367 /* Retrieve a complete descriptor for a certain device and index. */ 1368 Static usb_config_descriptor_t * 1369 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1370 { 1371 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1372 int len; 1373 usbd_status err; 1374 1375 if (index == USB_CURRENT_CONFIG_INDEX) { 1376 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1377 len = UGETW(tdesc->wTotalLength); 1378 if (lenp) 1379 *lenp = len; 1380 cdesc = malloc(len, M_TEMP, M_WAITOK); 1381 memcpy(cdesc, tdesc, len); 1382 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1383 } else { 1384 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1385 if (err) 1386 return (0); 1387 len = UGETW(cdescr.wTotalLength); 1388 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1389 if (lenp) 1390 *lenp = len; 1391 cdesc = malloc(len, M_TEMP, M_WAITOK); 1392 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1393 if (err) { 1394 free(cdesc, M_TEMP); 1395 return (0); 1396 } 1397 } 1398 return (cdesc); 1399 } 1400 1401 Static int 1402 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1403 { 1404 usbd_interface_handle iface; 1405 usbd_status err; 1406 1407 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1408 if (err) 1409 return (-1); 1410 return (usbd_get_interface_altindex(iface)); 1411 } 1412 1413 Static int 1414 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1415 void *addr, int flag, struct lwp *l) 1416 { 1417 struct ugen_endpoint *sce; 1418 usbd_status err; 1419 usbd_interface_handle iface; 1420 struct usb_config_desc *cd; 1421 usb_config_descriptor_t *cdesc; 1422 struct usb_interface_desc *id; 1423 usb_interface_descriptor_t *idesc; 1424 struct usb_endpoint_desc *ed; 1425 usb_endpoint_descriptor_t *edesc; 1426 struct usb_alt_interface *ai; 1427 struct usb_string_desc *si; 1428 u_int8_t conf, alt; 1429 1430 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1431 if (sc->sc_dying) 1432 return (EIO); 1433 1434 switch (cmd) { 1435 case FIONBIO: 1436 /* All handled in the upper FS layer. */ 1437 return (0); 1438 case USB_SET_SHORT_XFER: 1439 if (endpt == USB_CONTROL_ENDPOINT) 1440 return (EINVAL); 1441 /* This flag only affects read */ 1442 sce = &sc->sc_endpoints[endpt][IN]; 1443 if (sce == NULL || sce->pipeh == NULL) 1444 return (EINVAL); 1445 if (*(int *)addr) 1446 sce->state |= UGEN_SHORT_OK; 1447 else 1448 sce->state &= ~UGEN_SHORT_OK; 1449 return (0); 1450 case USB_SET_TIMEOUT: 1451 sce = &sc->sc_endpoints[endpt][IN]; 1452 if (sce == NULL 1453 /* XXX this shouldn't happen, but the distinction between 1454 input and output pipes isn't clear enough. 1455 || sce->pipeh == NULL */ 1456 ) 1457 return (EINVAL); 1458 sce->timeout = *(int *)addr; 1459 return (0); 1460 case USB_SET_BULK_RA: 1461 if (endpt == USB_CONTROL_ENDPOINT) 1462 return (EINVAL); 1463 sce = &sc->sc_endpoints[endpt][IN]; 1464 if (sce == NULL || sce->pipeh == NULL) 1465 return (EINVAL); 1466 edesc = sce->edesc; 1467 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1468 return (EINVAL); 1469 1470 if (*(int *)addr) { 1471 /* Only turn RA on if it's currently off. */ 1472 if (sce->state & UGEN_BULK_RA) 1473 return (0); 1474 1475 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1476 /* shouldn't happen */ 1477 return (EINVAL); 1478 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1479 if (sce->ra_wb_xfer == NULL) 1480 return (ENOMEM); 1481 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1482 /* 1483 * Set up a dmabuf because we reuse the xfer with 1484 * the same (max) request length like isoc. 1485 */ 1486 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1487 sce->ra_wb_xferlen) == 0) { 1488 usbd_free_xfer(sce->ra_wb_xfer); 1489 return (ENOMEM); 1490 } 1491 sce->ibuf = malloc(sce->ra_wb_bufsize, 1492 M_USBDEV, M_WAITOK); 1493 sce->fill = sce->cur = sce->ibuf; 1494 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1495 sce->ra_wb_used = 0; 1496 sce->state |= UGEN_BULK_RA; 1497 sce->state &= ~UGEN_RA_WB_STOP; 1498 /* Now start reading. */ 1499 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1500 NULL, 1501 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1502 USBD_NO_COPY, USBD_NO_TIMEOUT, 1503 ugen_bulkra_intr); 1504 err = usbd_transfer(sce->ra_wb_xfer); 1505 if (err != USBD_IN_PROGRESS) { 1506 sce->state &= ~UGEN_BULK_RA; 1507 free(sce->ibuf, M_USBDEV); 1508 sce->ibuf = NULL; 1509 usbd_free_xfer(sce->ra_wb_xfer); 1510 return (EIO); 1511 } 1512 } else { 1513 /* Only turn RA off if it's currently on. */ 1514 if (!(sce->state & UGEN_BULK_RA)) 1515 return (0); 1516 1517 sce->state &= ~UGEN_BULK_RA; 1518 usbd_abort_pipe(sce->pipeh); 1519 usbd_free_xfer(sce->ra_wb_xfer); 1520 /* 1521 * XXX Discard whatever's in the buffer, but we 1522 * should keep it around and drain the buffer 1523 * instead. 1524 */ 1525 free(sce->ibuf, M_USBDEV); 1526 sce->ibuf = NULL; 1527 } 1528 return (0); 1529 case USB_SET_BULK_WB: 1530 if (endpt == USB_CONTROL_ENDPOINT) 1531 return (EINVAL); 1532 sce = &sc->sc_endpoints[endpt][OUT]; 1533 if (sce == NULL || sce->pipeh == NULL) 1534 return (EINVAL); 1535 edesc = sce->edesc; 1536 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1537 return (EINVAL); 1538 1539 if (*(int *)addr) { 1540 /* Only turn WB on if it's currently off. */ 1541 if (sce->state & UGEN_BULK_WB) 1542 return (0); 1543 1544 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1545 /* shouldn't happen */ 1546 return (EINVAL); 1547 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1548 if (sce->ra_wb_xfer == NULL) 1549 return (ENOMEM); 1550 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1551 /* 1552 * Set up a dmabuf because we reuse the xfer with 1553 * the same (max) request length like isoc. 1554 */ 1555 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1556 sce->ra_wb_xferlen) == 0) { 1557 usbd_free_xfer(sce->ra_wb_xfer); 1558 return (ENOMEM); 1559 } 1560 sce->ibuf = malloc(sce->ra_wb_bufsize, 1561 M_USBDEV, M_WAITOK); 1562 sce->fill = sce->cur = sce->ibuf; 1563 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1564 sce->ra_wb_used = 0; 1565 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1566 } else { 1567 /* Only turn WB off if it's currently on. */ 1568 if (!(sce->state & UGEN_BULK_WB)) 1569 return (0); 1570 1571 sce->state &= ~UGEN_BULK_WB; 1572 /* 1573 * XXX Discard whatever's in the buffer, but we 1574 * should keep it around and keep writing to 1575 * drain the buffer instead. 1576 */ 1577 usbd_abort_pipe(sce->pipeh); 1578 usbd_free_xfer(sce->ra_wb_xfer); 1579 free(sce->ibuf, M_USBDEV); 1580 sce->ibuf = NULL; 1581 } 1582 return (0); 1583 case USB_SET_BULK_RA_OPT: 1584 case USB_SET_BULK_WB_OPT: 1585 { 1586 struct usb_bulk_ra_wb_opt *opt; 1587 1588 if (endpt == USB_CONTROL_ENDPOINT) 1589 return (EINVAL); 1590 opt = (struct usb_bulk_ra_wb_opt *)addr; 1591 if (cmd == USB_SET_BULK_RA_OPT) 1592 sce = &sc->sc_endpoints[endpt][IN]; 1593 else 1594 sce = &sc->sc_endpoints[endpt][OUT]; 1595 if (sce == NULL || sce->pipeh == NULL) 1596 return (EINVAL); 1597 if (opt->ra_wb_buffer_size < 1 || 1598 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1599 opt->ra_wb_request_size < 1 || 1600 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1601 return (EINVAL); 1602 /* 1603 * XXX These changes do not take effect until the 1604 * next time RA/WB mode is enabled but they ought to 1605 * take effect immediately. 1606 */ 1607 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1608 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1609 return (0); 1610 } 1611 default: 1612 break; 1613 } 1614 1615 if (endpt != USB_CONTROL_ENDPOINT) 1616 return (EINVAL); 1617 1618 switch (cmd) { 1619 #ifdef UGEN_DEBUG 1620 case USB_SETDEBUG: 1621 ugendebug = *(int *)addr; 1622 break; 1623 #endif 1624 case USB_GET_CONFIG: 1625 err = usbd_get_config(sc->sc_udev, &conf); 1626 if (err) 1627 return (EIO); 1628 *(int *)addr = conf; 1629 break; 1630 case USB_SET_CONFIG: 1631 if (!(flag & FWRITE)) 1632 return (EPERM); 1633 err = ugen_set_config(sc, *(int *)addr); 1634 switch (err) { 1635 case USBD_NORMAL_COMPLETION: 1636 break; 1637 case USBD_IN_USE: 1638 return (EBUSY); 1639 default: 1640 return (EIO); 1641 } 1642 break; 1643 case USB_GET_ALTINTERFACE: 1644 ai = (struct usb_alt_interface *)addr; 1645 err = usbd_device2interface_handle(sc->sc_udev, 1646 ai->uai_interface_index, &iface); 1647 if (err) 1648 return (EINVAL); 1649 idesc = usbd_get_interface_descriptor(iface); 1650 if (idesc == NULL) 1651 return (EIO); 1652 ai->uai_alt_no = idesc->bAlternateSetting; 1653 break; 1654 case USB_SET_ALTINTERFACE: 1655 if (!(flag & FWRITE)) 1656 return (EPERM); 1657 ai = (struct usb_alt_interface *)addr; 1658 err = usbd_device2interface_handle(sc->sc_udev, 1659 ai->uai_interface_index, &iface); 1660 if (err) 1661 return (EINVAL); 1662 err = ugen_set_interface(sc, ai->uai_interface_index, 1663 ai->uai_alt_no); 1664 if (err) 1665 return (EINVAL); 1666 break; 1667 case USB_GET_NO_ALT: 1668 ai = (struct usb_alt_interface *)addr; 1669 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1670 if (cdesc == NULL) 1671 return (EINVAL); 1672 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1673 if (idesc == NULL) { 1674 free(cdesc, M_TEMP); 1675 return (EINVAL); 1676 } 1677 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1678 idesc->bInterfaceNumber); 1679 free(cdesc, M_TEMP); 1680 break; 1681 case USB_GET_DEVICE_DESC: 1682 *(usb_device_descriptor_t *)addr = 1683 *usbd_get_device_descriptor(sc->sc_udev); 1684 break; 1685 case USB_GET_CONFIG_DESC: 1686 cd = (struct usb_config_desc *)addr; 1687 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1688 if (cdesc == NULL) 1689 return (EINVAL); 1690 cd->ucd_desc = *cdesc; 1691 free(cdesc, M_TEMP); 1692 break; 1693 case USB_GET_INTERFACE_DESC: 1694 id = (struct usb_interface_desc *)addr; 1695 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1696 if (cdesc == NULL) 1697 return (EINVAL); 1698 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1699 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1700 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1701 else 1702 alt = id->uid_alt_index; 1703 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1704 if (idesc == NULL) { 1705 free(cdesc, M_TEMP); 1706 return (EINVAL); 1707 } 1708 id->uid_desc = *idesc; 1709 free(cdesc, M_TEMP); 1710 break; 1711 case USB_GET_ENDPOINT_DESC: 1712 ed = (struct usb_endpoint_desc *)addr; 1713 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1714 if (cdesc == NULL) 1715 return (EINVAL); 1716 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1717 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1718 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1719 else 1720 alt = ed->ued_alt_index; 1721 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1722 alt, ed->ued_endpoint_index); 1723 if (edesc == NULL) { 1724 free(cdesc, M_TEMP); 1725 return (EINVAL); 1726 } 1727 ed->ued_desc = *edesc; 1728 free(cdesc, M_TEMP); 1729 break; 1730 case USB_GET_FULL_DESC: 1731 { 1732 int len; 1733 struct iovec iov; 1734 struct uio uio; 1735 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1736 int error; 1737 1738 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1739 if (cdesc == NULL) 1740 return (EINVAL); 1741 if (len > fd->ufd_size) 1742 len = fd->ufd_size; 1743 iov.iov_base = (void *)fd->ufd_data; 1744 iov.iov_len = len; 1745 uio.uio_iov = &iov; 1746 uio.uio_iovcnt = 1; 1747 uio.uio_resid = len; 1748 uio.uio_offset = 0; 1749 uio.uio_rw = UIO_READ; 1750 uio.uio_vmspace = l->l_proc->p_vmspace; 1751 error = uiomove((void *)cdesc, len, &uio); 1752 free(cdesc, M_TEMP); 1753 return (error); 1754 } 1755 case USB_GET_STRING_DESC: { 1756 int len; 1757 si = (struct usb_string_desc *)addr; 1758 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1759 si->usd_language_id, &si->usd_desc, &len); 1760 if (err) 1761 return (EINVAL); 1762 break; 1763 } 1764 case USB_DO_REQUEST: 1765 { 1766 struct usb_ctl_request *ur = (void *)addr; 1767 int len = UGETW(ur->ucr_request.wLength); 1768 struct iovec iov; 1769 struct uio uio; 1770 void *ptr = 0; 1771 usbd_status xerr; 1772 int error = 0; 1773 1774 if (!(flag & FWRITE)) 1775 return (EPERM); 1776 /* Avoid requests that would damage the bus integrity. */ 1777 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1778 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1779 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1780 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1781 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1782 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1783 return (EINVAL); 1784 1785 if (len < 0 || len > 32767) 1786 return (EINVAL); 1787 if (len != 0) { 1788 iov.iov_base = (void *)ur->ucr_data; 1789 iov.iov_len = len; 1790 uio.uio_iov = &iov; 1791 uio.uio_iovcnt = 1; 1792 uio.uio_resid = len; 1793 uio.uio_offset = 0; 1794 uio.uio_rw = 1795 ur->ucr_request.bmRequestType & UT_READ ? 1796 UIO_READ : UIO_WRITE; 1797 uio.uio_vmspace = l->l_proc->p_vmspace; 1798 ptr = malloc(len, M_TEMP, M_WAITOK); 1799 if (uio.uio_rw == UIO_WRITE) { 1800 error = uiomove(ptr, len, &uio); 1801 if (error) 1802 goto ret; 1803 } 1804 } 1805 sce = &sc->sc_endpoints[endpt][IN]; 1806 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1807 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1808 if (xerr) { 1809 error = EIO; 1810 goto ret; 1811 } 1812 if (len != 0) { 1813 if (uio.uio_rw == UIO_READ) { 1814 error = uiomove(ptr, len, &uio); 1815 if (error) 1816 goto ret; 1817 } 1818 } 1819 ret: 1820 if (ptr) 1821 free(ptr, M_TEMP); 1822 return (error); 1823 } 1824 case USB_GET_DEVICEINFO: 1825 usbd_fill_deviceinfo(sc->sc_udev, 1826 (struct usb_device_info *)addr, 0); 1827 break; 1828 #ifdef COMPAT_30 1829 case USB_GET_DEVICEINFO_OLD: 1830 usbd_fill_deviceinfo_old(sc->sc_udev, 1831 (struct usb_device_info_old *)addr, 0); 1832 1833 break; 1834 #endif 1835 default: 1836 return (EINVAL); 1837 } 1838 return (0); 1839 } 1840 1841 int 1842 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1843 { 1844 int endpt = UGENENDPOINT(dev); 1845 struct ugen_softc *sc; 1846 int error; 1847 1848 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1849 if (sc == NULL) 1850 return ENXIO; 1851 1852 sc->sc_refcnt++; 1853 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1854 if (--sc->sc_refcnt < 0) 1855 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1856 return (error); 1857 } 1858 1859 int 1860 ugenpoll(dev_t dev, int events, struct lwp *l) 1861 { 1862 struct ugen_softc *sc; 1863 struct ugen_endpoint *sce_in, *sce_out; 1864 int revents = 0; 1865 1866 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1867 if (sc == NULL) 1868 return ENXIO; 1869 1870 if (sc->sc_dying) 1871 return (POLLHUP); 1872 1873 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1874 return ENODEV; 1875 1876 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1877 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1878 if (sce_in == NULL && sce_out == NULL) 1879 return (POLLERR); 1880 #ifdef DIAGNOSTIC 1881 if (!sce_in->edesc && !sce_out->edesc) { 1882 printf("ugenpoll: no edesc\n"); 1883 return (POLLERR); 1884 } 1885 /* It's possible to have only one pipe open. */ 1886 if (!sce_in->pipeh && !sce_out->pipeh) { 1887 printf("ugenpoll: no pipe\n"); 1888 return (POLLERR); 1889 } 1890 #endif 1891 1892 mutex_enter(&sc->sc_lock); 1893 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1894 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1895 case UE_INTERRUPT: 1896 if (sce_in->q.c_cc > 0) 1897 revents |= events & (POLLIN | POLLRDNORM); 1898 else 1899 selrecord(l, &sce_in->rsel); 1900 break; 1901 case UE_ISOCHRONOUS: 1902 if (sce_in->cur != sce_in->fill) 1903 revents |= events & (POLLIN | POLLRDNORM); 1904 else 1905 selrecord(l, &sce_in->rsel); 1906 break; 1907 case UE_BULK: 1908 if (sce_in->state & UGEN_BULK_RA) { 1909 if (sce_in->ra_wb_used > 0) 1910 revents |= events & 1911 (POLLIN | POLLRDNORM); 1912 else 1913 selrecord(l, &sce_in->rsel); 1914 break; 1915 } 1916 /* 1917 * We have no easy way of determining if a read will 1918 * yield any data or a write will happen. 1919 * Pretend they will. 1920 */ 1921 revents |= events & (POLLIN | POLLRDNORM); 1922 break; 1923 default: 1924 break; 1925 } 1926 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1927 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1928 case UE_INTERRUPT: 1929 case UE_ISOCHRONOUS: 1930 /* XXX unimplemented */ 1931 break; 1932 case UE_BULK: 1933 if (sce_out->state & UGEN_BULK_WB) { 1934 if (sce_out->ra_wb_used < 1935 sce_out->limit - sce_out->ibuf) 1936 revents |= events & 1937 (POLLOUT | POLLWRNORM); 1938 else 1939 selrecord(l, &sce_out->rsel); 1940 break; 1941 } 1942 /* 1943 * We have no easy way of determining if a read will 1944 * yield any data or a write will happen. 1945 * Pretend they will. 1946 */ 1947 revents |= events & (POLLOUT | POLLWRNORM); 1948 break; 1949 default: 1950 break; 1951 } 1952 1953 mutex_exit(&sc->sc_lock); 1954 1955 return (revents); 1956 } 1957 1958 static void 1959 filt_ugenrdetach(struct knote *kn) 1960 { 1961 struct ugen_endpoint *sce = kn->kn_hook; 1962 struct ugen_softc *sc = sce->sc; 1963 1964 mutex_enter(&sc->sc_lock); 1965 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1966 mutex_exit(&sc->sc_lock); 1967 } 1968 1969 static int 1970 filt_ugenread_intr(struct knote *kn, long hint) 1971 { 1972 struct ugen_endpoint *sce = kn->kn_hook; 1973 1974 kn->kn_data = sce->q.c_cc; 1975 return (kn->kn_data > 0); 1976 } 1977 1978 static int 1979 filt_ugenread_isoc(struct knote *kn, long hint) 1980 { 1981 struct ugen_endpoint *sce = kn->kn_hook; 1982 1983 if (sce->cur == sce->fill) 1984 return (0); 1985 1986 if (sce->cur < sce->fill) 1987 kn->kn_data = sce->fill - sce->cur; 1988 else 1989 kn->kn_data = (sce->limit - sce->cur) + 1990 (sce->fill - sce->ibuf); 1991 1992 return (1); 1993 } 1994 1995 static int 1996 filt_ugenread_bulk(struct knote *kn, long hint) 1997 { 1998 struct ugen_endpoint *sce = kn->kn_hook; 1999 2000 if (!(sce->state & UGEN_BULK_RA)) 2001 /* 2002 * We have no easy way of determining if a read will 2003 * yield any data or a write will happen. 2004 * So, emulate "seltrue". 2005 */ 2006 return (filt_seltrue(kn, hint)); 2007 2008 if (sce->ra_wb_used == 0) 2009 return (0); 2010 2011 kn->kn_data = sce->ra_wb_used; 2012 2013 return (1); 2014 } 2015 2016 static int 2017 filt_ugenwrite_bulk(struct knote *kn, long hint) 2018 { 2019 struct ugen_endpoint *sce = kn->kn_hook; 2020 2021 if (!(sce->state & UGEN_BULK_WB)) 2022 /* 2023 * We have no easy way of determining if a read will 2024 * yield any data or a write will happen. 2025 * So, emulate "seltrue". 2026 */ 2027 return (filt_seltrue(kn, hint)); 2028 2029 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2030 return (0); 2031 2032 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2033 2034 return (1); 2035 } 2036 2037 static const struct filterops ugenread_intr_filtops = 2038 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2039 2040 static const struct filterops ugenread_isoc_filtops = 2041 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2042 2043 static const struct filterops ugenread_bulk_filtops = 2044 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2045 2046 static const struct filterops ugenwrite_bulk_filtops = 2047 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2048 2049 int 2050 ugenkqfilter(dev_t dev, struct knote *kn) 2051 { 2052 struct ugen_softc *sc; 2053 struct ugen_endpoint *sce; 2054 struct klist *klist; 2055 2056 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2057 if (sc == NULL) 2058 return ENXIO; 2059 2060 if (sc->sc_dying) 2061 return (ENXIO); 2062 2063 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2064 return ENODEV; 2065 2066 switch (kn->kn_filter) { 2067 case EVFILT_READ: 2068 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2069 if (sce == NULL) 2070 return (EINVAL); 2071 2072 klist = &sce->rsel.sel_klist; 2073 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2074 case UE_INTERRUPT: 2075 kn->kn_fop = &ugenread_intr_filtops; 2076 break; 2077 case UE_ISOCHRONOUS: 2078 kn->kn_fop = &ugenread_isoc_filtops; 2079 break; 2080 case UE_BULK: 2081 kn->kn_fop = &ugenread_bulk_filtops; 2082 break; 2083 default: 2084 return (EINVAL); 2085 } 2086 break; 2087 2088 case EVFILT_WRITE: 2089 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2090 if (sce == NULL) 2091 return (EINVAL); 2092 2093 klist = &sce->rsel.sel_klist; 2094 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2095 case UE_INTERRUPT: 2096 case UE_ISOCHRONOUS: 2097 /* XXX poll doesn't support this */ 2098 return (EINVAL); 2099 2100 case UE_BULK: 2101 kn->kn_fop = &ugenwrite_bulk_filtops; 2102 break; 2103 default: 2104 return (EINVAL); 2105 } 2106 break; 2107 2108 default: 2109 return (EINVAL); 2110 } 2111 2112 kn->kn_hook = sce; 2113 2114 mutex_enter(&sc->sc_lock); 2115 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2116 mutex_exit(&sc->sc_lock); 2117 2118 return (0); 2119 } 2120
Indexes created Thu Sep 25 16:09:42 GMT 2025