ugen.c revision 1.126.2.11
1 /* $NetBSD: ugen.c,v 1.126.2.11 2015/10/06 21:32:15 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 1.126.2.11 2015/10/06 21:32:15 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/kmem.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 struct usbd_xfer *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 struct usbd_interface *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 struct usbd_pipe *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 struct usbd_xfer *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 struct usbd_device *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(struct usbd_xfer *, void *, 162 usbd_status); 163 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 164 usbd_status); 165 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 166 usbd_status); 167 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 168 usbd_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 *, int); 174 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 175 int, int *); 176 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 177 Static int ugen_get_alt_index(struct ugen_softc *, int); 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->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 struct usbd_device *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->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->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 struct usbd_device *dev = sc->sc_udev; 277 usb_config_descriptor_t *cdesc; 278 struct usbd_interface *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 struct usbd_xfer *xfer; 358 int i, j; 359 360 sc = device_lookup_private(&ugen_cd, unit); 361 if (sc == NULL) 362 return ENXIO; 363 364 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 365 flag, mode, unit, endpt)); 366 367 if (sc == NULL || sc->sc_dying) 368 return ENXIO; 369 370 /* The control endpoint allows multiple opens. */ 371 if (endpt == USB_CONTROL_ENDPOINT) { 372 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 373 return 0; 374 } 375 376 if (sc->sc_is_open[endpt]) 377 return EBUSY; 378 379 /* Make sure there are pipes for all directions. */ 380 for (dir = OUT; dir <= IN; dir++) { 381 if (flag & (dir == OUT ? FWRITE : FREAD)) { 382 sce = &sc->sc_endpoints[endpt][dir]; 383 if (sce == 0 || sce->edesc == 0) 384 return ENXIO; 385 } 386 } 387 388 /* Actually open the pipes. */ 389 /* XXX Should back out properly if it fails. */ 390 for (dir = OUT; dir <= IN; dir++) { 391 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 392 continue; 393 sce = &sc->sc_endpoints[endpt][dir]; 394 sce->state = 0; 395 sce->timeout = USBD_NO_TIMEOUT; 396 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 397 sc, endpt, dir, sce)); 398 edesc = sce->edesc; 399 switch (edesc->bmAttributes & UE_XFERTYPE) { 400 case UE_INTERRUPT: 401 if (dir == OUT) { 402 err = usbd_open_pipe(sce->iface, 403 edesc->bEndpointAddress, 0, &sce->pipeh); 404 if (err) 405 return EIO; 406 break; 407 } 408 isize = UGETW(edesc->wMaxPacketSize); 409 if (isize == 0) /* shouldn't happen */ 410 return EINVAL; 411 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 412 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 413 endpt, isize)); 414 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 415 kmem_free(sce->ibuf, isize); 416 sce->ibuf = NULL; 417 return ENOMEM; 418 } 419 err = usbd_open_pipe_intr(sce->iface, 420 edesc->bEndpointAddress, 421 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 422 sce->ibuf, isize, ugenintr, 423 USBD_DEFAULT_INTERVAL); 424 if (err) { 425 clfree(&sce->q); 426 kmem_free(sce->ibuf, isize); 427 sce->ibuf = NULL; 428 return EIO; 429 } 430 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 431 break; 432 case UE_BULK: 433 err = usbd_open_pipe(sce->iface, 434 edesc->bEndpointAddress, 0, &sce->pipeh); 435 if (err) 436 return EIO; 437 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 438 /* 439 * Use request size for non-RA/WB transfers 440 * as the default. 441 */ 442 sce->ra_wb_reqsize = UGEN_BBSIZE; 443 break; 444 case UE_ISOCHRONOUS: 445 if (dir == OUT) 446 return EINVAL; 447 isize = UGETW(edesc->wMaxPacketSize); 448 if (isize == 0) /* shouldn't happen */ 449 return EINVAL; 450 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 451 KM_SLEEP); 452 sce->cur = sce->fill = sce->ibuf; 453 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 454 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 455 endpt, isize)); 456 err = usbd_open_pipe(sce->iface, 457 edesc->bEndpointAddress, 0, &sce->pipeh); 458 if (err) { 459 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 460 sce->ibuf = NULL; 461 return EIO; 462 } 463 for (i = 0; i < UGEN_NISOREQS; ++i) { 464 sce->isoreqs[i].sce = sce; 465 err = usbd_create_xfer(sce->pipeh, 466 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 467 &xfer); 468 if (err) 469 goto bad; 470 sce->isoreqs[i].xfer = xfer; 471 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 472 for (j = 0; j < UGEN_NISORFRMS; ++j) 473 sce->isoreqs[i].sizes[j] = isize; 474 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 475 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 476 ugen_isoc_rintr); 477 (void)usbd_transfer(xfer); 478 } 479 DPRINTFN(5, ("ugenopen: isoc open done\n")); 480 break; 481 bad: 482 while (--i >= 0) /* implicit buffer free */ 483 usbd_destroy_xfer(sce->isoreqs[i].xfer); 484 usbd_close_pipe(sce->pipeh); 485 sce->pipeh = NULL; 486 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 487 sce->ibuf = NULL; 488 return ENOMEM; 489 case UE_CONTROL: 490 sce->timeout = USBD_DEFAULT_TIMEOUT; 491 return EINVAL; 492 } 493 } 494 sc->sc_is_open[endpt] = 1; 495 return 0; 496 } 497 498 int 499 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 500 { 501 int endpt = UGENENDPOINT(dev); 502 struct ugen_softc *sc; 503 struct ugen_endpoint *sce; 504 int dir; 505 int i; 506 507 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 508 if (sc == NULL) 509 return ENXIO; 510 511 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 512 flag, mode, UGENUNIT(dev), endpt)); 513 514 #ifdef DIAGNOSTIC 515 if (!sc->sc_is_open[endpt]) { 516 printf("ugenclose: not open\n"); 517 return EINVAL; 518 } 519 #endif 520 521 if (endpt == USB_CONTROL_ENDPOINT) { 522 DPRINTFN(5, ("ugenclose: close control\n")); 523 sc->sc_is_open[endpt] = 0; 524 return 0; 525 } 526 527 for (dir = OUT; dir <= IN; dir++) { 528 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 529 continue; 530 sce = &sc->sc_endpoints[endpt][dir]; 531 if (sce == NULL || sce->pipeh == NULL) 532 continue; 533 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 534 endpt, dir, sce)); 535 536 usbd_abort_pipe(sce->pipeh); 537 usbd_close_pipe(sce->pipeh); 538 sce->pipeh = NULL; 539 540 int isize = UGETW(sce->edesc->wMaxPacketSize); 541 int msize = 0; 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 msize = isize; 548 break; 549 case UE_ISOCHRONOUS: 550 for (i = 0; i < UGEN_NISOREQS; ++i) 551 usbd_destroy_xfer(sce->isoreqs[i].xfer); 552 msize = isize * UGEN_NISOFRAMES; 553 break; 554 case UE_BULK: 555 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 556 usbd_destroy_xfer(sce->ra_wb_xfer); 557 msize = sce->ra_wb_bufsize; 558 } 559 break; 560 default: 561 break; 562 } 563 if (sce->ibuf != NULL) { 564 kmem_free(sce->ibuf, msize); 565 sce->ibuf = NULL; 566 } 567 } 568 sc->sc_is_open[endpt] = 0; 569 570 return 0; 571 } 572 573 Static int 574 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 575 { 576 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 577 uint32_t n, tn; 578 struct usbd_xfer *xfer; 579 usbd_status err; 580 int error = 0; 581 582 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 583 584 if (sc->sc_dying) 585 return EIO; 586 587 if (endpt == USB_CONTROL_ENDPOINT) 588 return ENODEV; 589 590 #ifdef DIAGNOSTIC 591 if (sce->edesc == NULL) { 592 printf("ugenread: no edesc\n"); 593 return EIO; 594 } 595 if (sce->pipeh == NULL) { 596 printf("ugenread: no pipe\n"); 597 return EIO; 598 } 599 #endif 600 601 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 602 case UE_INTERRUPT: 603 /* Block until activity occurred. */ 604 mutex_enter(&sc->sc_lock); 605 while (sce->q.c_cc == 0) { 606 if (flag & IO_NDELAY) { 607 mutex_exit(&sc->sc_lock); 608 return EWOULDBLOCK; 609 } 610 sce->state |= UGEN_ASLP; 611 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 612 /* "ugenri" */ 613 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 614 mstohz(sce->timeout)); 615 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 616 if (sc->sc_dying) 617 error = EIO; 618 if (error) { 619 sce->state &= ~UGEN_ASLP; 620 break; 621 } 622 } 623 mutex_exit(&sc->sc_lock); 624 625 /* Transfer as many chunks as possible. */ 626 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 627 n = min(sce->q.c_cc, uio->uio_resid); 628 if (n > sizeof(sc->sc_buffer)) 629 n = sizeof(sc->sc_buffer); 630 631 /* Remove a small chunk from the input queue. */ 632 q_to_b(&sce->q, sc->sc_buffer, n); 633 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 634 635 /* Copy the data to the user process. */ 636 error = uiomove(sc->sc_buffer, n, uio); 637 if (error) 638 break; 639 } 640 break; 641 case UE_BULK: 642 if (sce->state & UGEN_BULK_RA) { 643 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 644 uio->uio_resid, sce->ra_wb_used)); 645 xfer = sce->ra_wb_xfer; 646 647 mutex_enter(&sc->sc_lock); 648 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 649 mutex_exit(&sc->sc_lock); 650 return EWOULDBLOCK; 651 } 652 while (uio->uio_resid > 0 && !error) { 653 while (sce->ra_wb_used == 0) { 654 sce->state |= UGEN_ASLP; 655 DPRINTFN(5, 656 ("ugenread: sleep on %p\n", 657 sce)); 658 /* "ugenrb" */ 659 error = cv_timedwait_sig(&sce->cv, 660 &sc->sc_lock, mstohz(sce->timeout)); 661 DPRINTFN(5, 662 ("ugenread: woke, error=%d\n", 663 error)); 664 if (sc->sc_dying) 665 error = EIO; 666 if (error) { 667 sce->state &= ~UGEN_ASLP; 668 break; 669 } 670 } 671 672 /* Copy data to the process. */ 673 while (uio->uio_resid > 0 674 && sce->ra_wb_used > 0) { 675 n = min(uio->uio_resid, 676 sce->ra_wb_used); 677 n = min(n, sce->limit - sce->cur); 678 error = uiomove(sce->cur, n, uio); 679 if (error) 680 break; 681 sce->cur += n; 682 sce->ra_wb_used -= n; 683 if (sce->cur == sce->limit) 684 sce->cur = sce->ibuf; 685 } 686 687 /* 688 * If the transfers stopped because the 689 * buffer was full, restart them. 690 */ 691 if (sce->state & UGEN_RA_WB_STOP && 692 sce->ra_wb_used < sce->limit - sce->ibuf) { 693 n = (sce->limit - sce->ibuf) 694 - sce->ra_wb_used; 695 usbd_setup_xfer(xfer, sce, NULL, 696 min(n, sce->ra_wb_xferlen), 697 0, USBD_NO_TIMEOUT, 698 ugen_bulkra_intr); 699 sce->state &= ~UGEN_RA_WB_STOP; 700 err = usbd_transfer(xfer); 701 if (err != USBD_IN_PROGRESS) 702 /* 703 * The transfer has not been 704 * queued. Setting STOP 705 * will make us try 706 * again at the next read. 707 */ 708 sce->state |= UGEN_RA_WB_STOP; 709 } 710 } 711 mutex_exit(&sc->sc_lock); 712 break; 713 } 714 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 715 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 716 0, &xfer); 717 if (error) 718 return error; 719 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 720 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 721 tn = n; 722 err = usbd_bulk_transfer(xfer, sce->pipeh, 723 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 724 sce->timeout, sc->sc_buffer, &tn); 725 if (err) { 726 if (err == USBD_INTERRUPTED) 727 error = EINTR; 728 else if (err == USBD_TIMEOUT) 729 error = ETIMEDOUT; 730 else 731 error = EIO; 732 break; 733 } 734 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 735 error = uiomove(sc->sc_buffer, tn, uio); 736 if (error || tn < n) 737 break; 738 } 739 usbd_destroy_xfer(xfer); 740 break; 741 case UE_ISOCHRONOUS: 742 mutex_enter(&sc->sc_lock); 743 while (sce->cur == sce->fill) { 744 if (flag & IO_NDELAY) { 745 mutex_exit(&sc->sc_lock); 746 return EWOULDBLOCK; 747 } 748 sce->state |= UGEN_ASLP; 749 /* "ugenri" */ 750 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 751 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 752 mstohz(sce->timeout)); 753 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 754 if (sc->sc_dying) 755 error = EIO; 756 if (error) { 757 sce->state &= ~UGEN_ASLP; 758 break; 759 } 760 } 761 762 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 763 if(sce->fill > sce->cur) 764 n = min(sce->fill - sce->cur, uio->uio_resid); 765 else 766 n = min(sce->limit - sce->cur, uio->uio_resid); 767 768 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 769 770 /* Copy the data to the user process. */ 771 error = uiomove(sce->cur, n, uio); 772 if (error) 773 break; 774 sce->cur += n; 775 if (sce->cur >= sce->limit) 776 sce->cur = sce->ibuf; 777 } 778 mutex_exit(&sc->sc_lock); 779 break; 780 781 782 default: 783 return ENXIO; 784 } 785 return error; 786 } 787 788 int 789 ugenread(dev_t dev, struct uio *uio, int flag) 790 { 791 int endpt = UGENENDPOINT(dev); 792 struct ugen_softc *sc; 793 int error; 794 795 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 796 if (sc == NULL) 797 return ENXIO; 798 799 mutex_enter(&sc->sc_lock); 800 sc->sc_refcnt++; 801 mutex_exit(&sc->sc_lock); 802 803 error = ugen_do_read(sc, endpt, uio, flag); 804 805 mutex_enter(&sc->sc_lock); 806 if (--sc->sc_refcnt < 0) 807 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 808 mutex_exit(&sc->sc_lock); 809 810 return error; 811 } 812 813 Static int 814 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 815 int flag) 816 { 817 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 818 uint32_t n; 819 int error = 0; 820 uint32_t tn; 821 char *dbuf; 822 struct usbd_xfer *xfer; 823 usbd_status err; 824 825 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 826 827 if (sc->sc_dying) 828 return EIO; 829 830 if (endpt == USB_CONTROL_ENDPOINT) 831 return ENODEV; 832 833 #ifdef DIAGNOSTIC 834 if (sce->edesc == NULL) { 835 printf("ugenwrite: no edesc\n"); 836 return EIO; 837 } 838 if (sce->pipeh == NULL) { 839 printf("ugenwrite: no pipe\n"); 840 return EIO; 841 } 842 #endif 843 844 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 845 case UE_BULK: 846 if (sce->state & UGEN_BULK_WB) { 847 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 848 uio->uio_resid, sce->ra_wb_used)); 849 xfer = sce->ra_wb_xfer; 850 851 mutex_enter(&sc->sc_lock); 852 if (sce->ra_wb_used == sce->limit - sce->ibuf && 853 flag & IO_NDELAY) { 854 mutex_exit(&sc->sc_lock); 855 return EWOULDBLOCK; 856 } 857 while (uio->uio_resid > 0 && !error) { 858 while (sce->ra_wb_used == 859 sce->limit - sce->ibuf) { 860 sce->state |= UGEN_ASLP; 861 DPRINTFN(5, 862 ("ugenwrite: sleep on %p\n", 863 sce)); 864 /* "ugenwb" */ 865 error = cv_timedwait_sig(&sce->cv, 866 &sc->sc_lock, mstohz(sce->timeout)); 867 DPRINTFN(5, 868 ("ugenwrite: woke, error=%d\n", 869 error)); 870 if (sc->sc_dying) 871 error = EIO; 872 if (error) { 873 sce->state &= ~UGEN_ASLP; 874 break; 875 } 876 } 877 878 /* Copy data from the process. */ 879 while (uio->uio_resid > 0 && 880 sce->ra_wb_used < sce->limit - sce->ibuf) { 881 n = min(uio->uio_resid, 882 (sce->limit - sce->ibuf) 883 - sce->ra_wb_used); 884 n = min(n, sce->limit - sce->fill); 885 error = uiomove(sce->fill, n, uio); 886 if (error) 887 break; 888 sce->fill += n; 889 sce->ra_wb_used += n; 890 if (sce->fill == sce->limit) 891 sce->fill = sce->ibuf; 892 } 893 894 /* 895 * If the transfers stopped because the 896 * buffer was empty, restart them. 897 */ 898 if (sce->state & UGEN_RA_WB_STOP && 899 sce->ra_wb_used > 0) { 900 dbuf = (char *)usbd_get_buffer(xfer); 901 n = min(sce->ra_wb_used, 902 sce->ra_wb_xferlen); 903 tn = min(n, sce->limit - sce->cur); 904 memcpy(dbuf, sce->cur, tn); 905 dbuf += tn; 906 if (n - tn > 0) 907 memcpy(dbuf, sce->ibuf, 908 n - tn); 909 usbd_setup_xfer(xfer, sce, NULL, n, 910 0, 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 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 928 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 929 0, &xfer); 930 if (error) 931 return error; 932 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 933 error = uiomove(sc->sc_buffer, n, uio); 934 if (error) 935 break; 936 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 937 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 938 sc->sc_buffer, &n); 939 if (err) { 940 if (err == USBD_INTERRUPTED) 941 error = EINTR; 942 else if (err == USBD_TIMEOUT) 943 error = ETIMEDOUT; 944 else 945 error = EIO; 946 break; 947 } 948 } 949 usbd_destroy_xfer(xfer); 950 break; 951 case UE_INTERRUPT: 952 error = usbd_create_xfer(sce->pipeh, 953 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 954 if (error) 955 return error; 956 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 957 uio->uio_resid)) != 0) { 958 error = uiomove(sc->sc_buffer, n, uio); 959 if (error) 960 break; 961 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 962 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 963 sce->timeout, sc->sc_buffer, &n); 964 if (err) { 965 if (err == USBD_INTERRUPTED) 966 error = EINTR; 967 else if (err == USBD_TIMEOUT) 968 error = ETIMEDOUT; 969 else 970 error = EIO; 971 break; 972 } 973 } 974 usbd_destroy_xfer(xfer); 975 break; 976 default: 977 return ENXIO; 978 } 979 return error; 980 } 981 982 int 983 ugenwrite(dev_t dev, struct uio *uio, int flag) 984 { 985 int endpt = UGENENDPOINT(dev); 986 struct ugen_softc *sc; 987 int error; 988 989 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 990 if (sc == NULL) 991 return ENXIO; 992 993 mutex_enter(&sc->sc_lock); 994 sc->sc_refcnt++; 995 mutex_exit(&sc->sc_lock); 996 997 error = ugen_do_write(sc, endpt, uio, flag); 998 999 mutex_enter(&sc->sc_lock); 1000 if (--sc->sc_refcnt < 0) 1001 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1002 mutex_exit(&sc->sc_lock); 1003 1004 return error; 1005 } 1006 1007 int 1008 ugen_activate(device_t self, enum devact act) 1009 { 1010 struct ugen_softc *sc = device_private(self); 1011 1012 switch (act) { 1013 case DVACT_DEACTIVATE: 1014 sc->sc_dying = 1; 1015 return 0; 1016 default: 1017 return EOPNOTSUPP; 1018 } 1019 } 1020 1021 int 1022 ugen_detach(device_t self, int flags) 1023 { 1024 struct ugen_softc *sc = device_private(self); 1025 struct ugen_endpoint *sce; 1026 int i, dir; 1027 int maj, mn; 1028 1029 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1030 1031 sc->sc_dying = 1; 1032 pmf_device_deregister(self); 1033 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1034 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1035 for (dir = OUT; dir <= IN; dir++) { 1036 sce = &sc->sc_endpoints[i][dir]; 1037 if (sce && sce->pipeh) 1038 usbd_abort_pipe(sce->pipeh); 1039 } 1040 } 1041 1042 mutex_enter(&sc->sc_lock); 1043 if (--sc->sc_refcnt >= 0) { 1044 /* Wake everyone */ 1045 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1046 cv_signal(&sc->sc_endpoints[i][IN].cv); 1047 /* Wait for processes to go away. */ 1048 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1049 } 1050 mutex_exit(&sc->sc_lock); 1051 1052 /* locate the major number */ 1053 maj = cdevsw_lookup_major(&ugen_cdevsw); 1054 1055 /* Nuke the vnodes for any open instances (calls close). */ 1056 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1057 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1058 1059 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1060 sc->sc_dev); 1061 1062 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1063 for (dir = OUT; dir <= IN; dir++) { 1064 sce = &sc->sc_endpoints[i][dir]; 1065 seldestroy(&sce->rsel); 1066 cv_destroy(&sce->cv); 1067 } 1068 } 1069 1070 cv_destroy(&sc->sc_detach_cv); 1071 mutex_destroy(&sc->sc_lock); 1072 1073 return 0; 1074 } 1075 1076 Static void 1077 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1078 { 1079 struct ugen_endpoint *sce = addr; 1080 struct ugen_softc *sc = sce->sc; 1081 uint32_t count; 1082 u_char *ibuf; 1083 1084 if (status == USBD_CANCELLED) 1085 return; 1086 1087 if (status != USBD_NORMAL_COMPLETION) { 1088 DPRINTF(("ugenintr: status=%d\n", status)); 1089 if (status == USBD_STALLED) 1090 usbd_clear_endpoint_stall_async(sce->pipeh); 1091 return; 1092 } 1093 1094 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1095 ibuf = sce->ibuf; 1096 1097 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1098 xfer, status, count)); 1099 DPRINTFN(5, (" data = %02x %02x %02x\n", 1100 ibuf[0], ibuf[1], ibuf[2])); 1101 1102 (void)b_to_q(ibuf, count, &sce->q); 1103 1104 mutex_enter(&sc->sc_lock); 1105 if (sce->state & UGEN_ASLP) { 1106 sce->state &= ~UGEN_ASLP; 1107 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1108 cv_signal(&sce->cv); 1109 } 1110 mutex_exit(&sc->sc_lock); 1111 selnotify(&sce->rsel, 0, 0); 1112 } 1113 1114 Static void 1115 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1116 usbd_status status) 1117 { 1118 struct isoreq *req = addr; 1119 struct ugen_endpoint *sce = req->sce; 1120 struct ugen_softc *sc = sce->sc; 1121 uint32_t count, n; 1122 int i, isize; 1123 1124 /* Return if we are aborting. */ 1125 if (status == USBD_CANCELLED) 1126 return; 1127 1128 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1129 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1130 (long)(req - sce->isoreqs), count)); 1131 1132 /* throw away oldest input if the buffer is full */ 1133 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1134 sce->cur += count; 1135 if(sce->cur >= sce->limit) 1136 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1137 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1138 count)); 1139 } 1140 1141 isize = UGETW(sce->edesc->wMaxPacketSize); 1142 for (i = 0; i < UGEN_NISORFRMS; i++) { 1143 uint32_t actlen = req->sizes[i]; 1144 char const *tbuf = (char const *)req->dmabuf + isize * i; 1145 1146 /* copy data to buffer */ 1147 while (actlen > 0) { 1148 n = min(actlen, sce->limit - sce->fill); 1149 memcpy(sce->fill, tbuf, n); 1150 1151 tbuf += n; 1152 actlen -= n; 1153 sce->fill += n; 1154 if(sce->fill == sce->limit) 1155 sce->fill = sce->ibuf; 1156 } 1157 1158 /* setup size for next transfer */ 1159 req->sizes[i] = isize; 1160 } 1161 1162 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1163 ugen_isoc_rintr); 1164 (void)usbd_transfer(xfer); 1165 1166 mutex_enter(&sc->sc_lock); 1167 if (sce->state & UGEN_ASLP) { 1168 sce->state &= ~UGEN_ASLP; 1169 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1170 cv_signal(&sce->cv); 1171 } 1172 mutex_exit(&sc->sc_lock); 1173 selnotify(&sce->rsel, 0, 0); 1174 } 1175 1176 Static void 1177 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1178 usbd_status status) 1179 { 1180 struct ugen_endpoint *sce = addr; 1181 struct ugen_softc *sc = sce->sc; 1182 uint32_t count, n; 1183 char const *tbuf; 1184 usbd_status err; 1185 1186 /* Return if we are aborting. */ 1187 if (status == USBD_CANCELLED) 1188 return; 1189 1190 if (status != USBD_NORMAL_COMPLETION) { 1191 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1192 sce->state |= UGEN_RA_WB_STOP; 1193 if (status == USBD_STALLED) 1194 usbd_clear_endpoint_stall_async(sce->pipeh); 1195 return; 1196 } 1197 1198 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1199 1200 /* Keep track of how much is in the buffer. */ 1201 sce->ra_wb_used += count; 1202 1203 /* Copy data to buffer. */ 1204 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1205 n = min(count, sce->limit - sce->fill); 1206 memcpy(sce->fill, tbuf, n); 1207 tbuf += n; 1208 count -= n; 1209 sce->fill += n; 1210 if (sce->fill == sce->limit) 1211 sce->fill = sce->ibuf; 1212 if (count > 0) { 1213 memcpy(sce->fill, tbuf, count); 1214 sce->fill += count; 1215 } 1216 1217 /* Set up the next request if necessary. */ 1218 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1219 if (n > 0) { 1220 usbd_setup_xfer(xfer, sce, NULL, min(n, sce->ra_wb_xferlen), 0, 1221 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1222 err = usbd_transfer(xfer); 1223 if (err != USBD_IN_PROGRESS) { 1224 printf("usbd_bulkra_intr: error=%d\n", err); 1225 /* 1226 * The transfer has not been queued. Setting STOP 1227 * will make us try again at the next read. 1228 */ 1229 sce->state |= UGEN_RA_WB_STOP; 1230 } 1231 } 1232 else 1233 sce->state |= UGEN_RA_WB_STOP; 1234 1235 mutex_enter(&sc->sc_lock); 1236 if (sce->state & UGEN_ASLP) { 1237 sce->state &= ~UGEN_ASLP; 1238 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1239 cv_signal(&sce->cv); 1240 } 1241 mutex_exit(&sc->sc_lock); 1242 selnotify(&sce->rsel, 0, 0); 1243 } 1244 1245 Static void 1246 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1247 usbd_status status) 1248 { 1249 struct ugen_endpoint *sce = addr; 1250 struct ugen_softc *sc = sce->sc; 1251 uint32_t count, n; 1252 char *tbuf; 1253 usbd_status err; 1254 1255 /* Return if we are aborting. */ 1256 if (status == USBD_CANCELLED) 1257 return; 1258 1259 if (status != USBD_NORMAL_COMPLETION) { 1260 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1261 sce->state |= UGEN_RA_WB_STOP; 1262 if (status == USBD_STALLED) 1263 usbd_clear_endpoint_stall_async(sce->pipeh); 1264 return; 1265 } 1266 1267 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1268 1269 /* Keep track of how much is in the buffer. */ 1270 sce->ra_wb_used -= count; 1271 1272 /* Update buffer pointers. */ 1273 sce->cur += count; 1274 if (sce->cur >= sce->limit) 1275 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1276 1277 /* Set up next request if necessary. */ 1278 if (sce->ra_wb_used > 0) { 1279 /* copy data from buffer */ 1280 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1281 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1282 n = min(count, sce->limit - sce->cur); 1283 memcpy(tbuf, sce->cur, n); 1284 tbuf += n; 1285 if (count - n > 0) 1286 memcpy(tbuf, sce->ibuf, count - n); 1287 1288 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1289 ugen_bulkwb_intr); 1290 err = usbd_transfer(xfer); 1291 if (err != USBD_IN_PROGRESS) { 1292 printf("usbd_bulkwb_intr: error=%d\n", err); 1293 /* 1294 * The transfer has not been queued. Setting STOP 1295 * will make us try again at the next write. 1296 */ 1297 sce->state |= UGEN_RA_WB_STOP; 1298 } 1299 } 1300 else 1301 sce->state |= UGEN_RA_WB_STOP; 1302 1303 mutex_enter(&sc->sc_lock); 1304 if (sce->state & UGEN_ASLP) { 1305 sce->state &= ~UGEN_ASLP; 1306 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1307 cv_signal(&sce->cv); 1308 } 1309 mutex_exit(&sc->sc_lock); 1310 selnotify(&sce->rsel, 0, 0); 1311 } 1312 1313 Static usbd_status 1314 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1315 { 1316 struct usbd_interface *iface; 1317 usb_endpoint_descriptor_t *ed; 1318 usbd_status err; 1319 struct ugen_endpoint *sce; 1320 uint8_t niface, nendpt, endptno, endpt; 1321 int dir; 1322 1323 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1324 1325 err = usbd_interface_count(sc->sc_udev, &niface); 1326 if (err) 1327 return err; 1328 if (ifaceidx < 0 || ifaceidx >= niface) 1329 return USBD_INVAL; 1330 1331 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1332 if (err) 1333 return err; 1334 err = usbd_endpoint_count(iface, &nendpt); 1335 if (err) 1336 return err; 1337 /* XXX should only do this after setting new altno has succeeded */ 1338 for (endptno = 0; endptno < nendpt; endptno++) { 1339 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1340 endpt = ed->bEndpointAddress; 1341 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1342 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1343 sce->sc = 0; 1344 sce->edesc = 0; 1345 sce->iface = 0; 1346 } 1347 1348 /* change setting */ 1349 err = usbd_set_interface(iface, altno); 1350 if (err) 1351 return err; 1352 1353 err = usbd_endpoint_count(iface, &nendpt); 1354 if (err) 1355 return err; 1356 for (endptno = 0; endptno < nendpt; endptno++) { 1357 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1358 KASSERT(ed != NULL); 1359 endpt = ed->bEndpointAddress; 1360 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1361 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1362 sce->sc = sc; 1363 sce->edesc = ed; 1364 sce->iface = iface; 1365 } 1366 return 0; 1367 } 1368 1369 /* Retrieve a complete descriptor for a certain device and index. */ 1370 Static usb_config_descriptor_t * 1371 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1372 { 1373 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1374 int len; 1375 usbd_status err; 1376 1377 if (index == USB_CURRENT_CONFIG_INDEX) { 1378 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1379 len = UGETW(tdesc->wTotalLength); 1380 if (lenp) 1381 *lenp = len; 1382 cdesc = kmem_alloc(len, KM_SLEEP); 1383 memcpy(cdesc, tdesc, len); 1384 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1385 } else { 1386 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1387 if (err) 1388 return 0; 1389 len = UGETW(cdescr.wTotalLength); 1390 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1391 if (lenp) 1392 *lenp = len; 1393 cdesc = kmem_alloc(len, KM_SLEEP); 1394 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1395 if (err) { 1396 kmem_free(cdesc, len); 1397 return 0; 1398 } 1399 } 1400 return cdesc; 1401 } 1402 1403 Static int 1404 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1405 { 1406 struct usbd_interface *iface; 1407 usbd_status err; 1408 1409 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1410 if (err) 1411 return -1; 1412 return usbd_get_interface_altindex(iface); 1413 } 1414 1415 Static int 1416 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1417 void *addr, int flag, struct lwp *l) 1418 { 1419 struct ugen_endpoint *sce; 1420 usbd_status err; 1421 struct usbd_interface *iface; 1422 struct usb_config_desc *cd; 1423 usb_config_descriptor_t *cdesc; 1424 struct usb_interface_desc *id; 1425 usb_interface_descriptor_t *idesc; 1426 struct usb_endpoint_desc *ed; 1427 usb_endpoint_descriptor_t *edesc; 1428 struct usb_alt_interface *ai; 1429 struct usb_string_desc *si; 1430 uint8_t conf, alt; 1431 int cdesclen; 1432 int error; 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 error = usbd_create_xfer(sce->pipeh, 1483 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1484 if (error) 1485 return error; 1486 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1487 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1488 sce->fill = sce->cur = sce->ibuf; 1489 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1490 sce->ra_wb_used = 0; 1491 sce->state |= UGEN_BULK_RA; 1492 sce->state &= ~UGEN_RA_WB_STOP; 1493 /* Now start reading. */ 1494 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1495 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1496 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1497 err = usbd_transfer(sce->ra_wb_xfer); 1498 if (err != USBD_IN_PROGRESS) { 1499 sce->state &= ~UGEN_BULK_RA; 1500 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1501 sce->ibuf = NULL; 1502 usbd_destroy_xfer(sce->ra_wb_xfer); 1503 return EIO; 1504 } 1505 } else { 1506 /* Only turn RA off if it's currently on. */ 1507 if (!(sce->state & UGEN_BULK_RA)) 1508 return 0; 1509 1510 sce->state &= ~UGEN_BULK_RA; 1511 usbd_abort_pipe(sce->pipeh); 1512 usbd_destroy_xfer(sce->ra_wb_xfer); 1513 /* 1514 * XXX Discard whatever's in the buffer, but we 1515 * should keep it around and drain the buffer 1516 * instead. 1517 */ 1518 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1519 sce->ibuf = NULL; 1520 } 1521 return 0; 1522 case USB_SET_BULK_WB: 1523 if (endpt == USB_CONTROL_ENDPOINT) 1524 return EINVAL; 1525 sce = &sc->sc_endpoints[endpt][OUT]; 1526 if (sce == NULL || sce->pipeh == NULL) 1527 return EINVAL; 1528 edesc = sce->edesc; 1529 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1530 return EINVAL; 1531 1532 if (*(int *)addr) { 1533 /* Only turn WB on if it's currently off. */ 1534 if (sce->state & UGEN_BULK_WB) 1535 return 0; 1536 1537 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1538 /* shouldn't happen */ 1539 return EINVAL; 1540 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1541 0, 0, &sce->ra_wb_xfer); 1542 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1543 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1544 sce->fill = sce->cur = sce->ibuf; 1545 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1546 sce->ra_wb_used = 0; 1547 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1548 } else { 1549 /* Only turn WB off if it's currently on. */ 1550 if (!(sce->state & UGEN_BULK_WB)) 1551 return 0; 1552 1553 sce->state &= ~UGEN_BULK_WB; 1554 /* 1555 * XXX Discard whatever's in the buffer, but we 1556 * should keep it around and keep writing to 1557 * drain the buffer instead. 1558 */ 1559 usbd_abort_pipe(sce->pipeh); 1560 usbd_destroy_xfer(sce->ra_wb_xfer); 1561 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1562 sce->ibuf = NULL; 1563 } 1564 return 0; 1565 case USB_SET_BULK_RA_OPT: 1566 case USB_SET_BULK_WB_OPT: 1567 { 1568 struct usb_bulk_ra_wb_opt *opt; 1569 1570 if (endpt == USB_CONTROL_ENDPOINT) 1571 return EINVAL; 1572 opt = (struct usb_bulk_ra_wb_opt *)addr; 1573 if (cmd == USB_SET_BULK_RA_OPT) 1574 sce = &sc->sc_endpoints[endpt][IN]; 1575 else 1576 sce = &sc->sc_endpoints[endpt][OUT]; 1577 if (sce == NULL || sce->pipeh == NULL) 1578 return EINVAL; 1579 if (opt->ra_wb_buffer_size < 1 || 1580 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1581 opt->ra_wb_request_size < 1 || 1582 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1583 return EINVAL; 1584 /* 1585 * XXX These changes do not take effect until the 1586 * next time RA/WB mode is enabled but they ought to 1587 * take effect immediately. 1588 */ 1589 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1590 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1591 return 0; 1592 } 1593 default: 1594 break; 1595 } 1596 1597 if (endpt != USB_CONTROL_ENDPOINT) 1598 return EINVAL; 1599 1600 switch (cmd) { 1601 #ifdef UGEN_DEBUG 1602 case USB_SETDEBUG: 1603 ugendebug = *(int *)addr; 1604 break; 1605 #endif 1606 case USB_GET_CONFIG: 1607 err = usbd_get_config(sc->sc_udev, &conf); 1608 if (err) 1609 return EIO; 1610 *(int *)addr = conf; 1611 break; 1612 case USB_SET_CONFIG: 1613 if (!(flag & FWRITE)) 1614 return EPERM; 1615 err = ugen_set_config(sc, *(int *)addr); 1616 switch (err) { 1617 case USBD_NORMAL_COMPLETION: 1618 break; 1619 case USBD_IN_USE: 1620 return EBUSY; 1621 default: 1622 return EIO; 1623 } 1624 break; 1625 case USB_GET_ALTINTERFACE: 1626 ai = (struct usb_alt_interface *)addr; 1627 err = usbd_device2interface_handle(sc->sc_udev, 1628 ai->uai_interface_index, &iface); 1629 if (err) 1630 return EINVAL; 1631 idesc = usbd_get_interface_descriptor(iface); 1632 if (idesc == NULL) 1633 return EIO; 1634 ai->uai_alt_no = idesc->bAlternateSetting; 1635 break; 1636 case USB_SET_ALTINTERFACE: 1637 if (!(flag & FWRITE)) 1638 return EPERM; 1639 ai = (struct usb_alt_interface *)addr; 1640 err = usbd_device2interface_handle(sc->sc_udev, 1641 ai->uai_interface_index, &iface); 1642 if (err) 1643 return EINVAL; 1644 err = ugen_set_interface(sc, ai->uai_interface_index, 1645 ai->uai_alt_no); 1646 if (err) 1647 return EINVAL; 1648 break; 1649 case USB_GET_NO_ALT: 1650 ai = (struct usb_alt_interface *)addr; 1651 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1652 if (cdesc == NULL) 1653 return EINVAL; 1654 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1655 if (idesc == NULL) { 1656 kmem_free(cdesc, cdesclen); 1657 return EINVAL; 1658 } 1659 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1660 idesc->bInterfaceNumber); 1661 kmem_free(cdesc, cdesclen); 1662 break; 1663 case USB_GET_DEVICE_DESC: 1664 *(usb_device_descriptor_t *)addr = 1665 *usbd_get_device_descriptor(sc->sc_udev); 1666 break; 1667 case USB_GET_CONFIG_DESC: 1668 cd = (struct usb_config_desc *)addr; 1669 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1670 if (cdesc == NULL) 1671 return EINVAL; 1672 cd->ucd_desc = *cdesc; 1673 kmem_free(cdesc, cdesclen); 1674 break; 1675 case USB_GET_INTERFACE_DESC: 1676 id = (struct usb_interface_desc *)addr; 1677 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1678 if (cdesc == NULL) 1679 return EINVAL; 1680 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1681 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1682 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1683 else 1684 alt = id->uid_alt_index; 1685 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1686 if (idesc == NULL) { 1687 kmem_free(cdesc, cdesclen); 1688 return EINVAL; 1689 } 1690 id->uid_desc = *idesc; 1691 kmem_free(cdesc, cdesclen); 1692 break; 1693 case USB_GET_ENDPOINT_DESC: 1694 ed = (struct usb_endpoint_desc *)addr; 1695 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1696 if (cdesc == NULL) 1697 return EINVAL; 1698 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1699 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1700 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1701 else 1702 alt = ed->ued_alt_index; 1703 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1704 alt, ed->ued_endpoint_index); 1705 if (edesc == NULL) { 1706 kmem_free(cdesc, cdesclen); 1707 return EINVAL; 1708 } 1709 ed->ued_desc = *edesc; 1710 kmem_free(cdesc, cdesclen); 1711 break; 1712 case USB_GET_FULL_DESC: 1713 { 1714 int len; 1715 struct iovec iov; 1716 struct uio uio; 1717 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1718 1719 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1720 if (cdesc == NULL) 1721 return EINVAL; 1722 len = cdesclen; 1723 if (len > fd->ufd_size) 1724 len = fd->ufd_size; 1725 iov.iov_base = (void *)fd->ufd_data; 1726 iov.iov_len = len; 1727 uio.uio_iov = &iov; 1728 uio.uio_iovcnt = 1; 1729 uio.uio_resid = len; 1730 uio.uio_offset = 0; 1731 uio.uio_rw = UIO_READ; 1732 uio.uio_vmspace = l->l_proc->p_vmspace; 1733 error = uiomove((void *)cdesc, len, &uio); 1734 kmem_free(cdesc, cdesclen); 1735 return error; 1736 } 1737 case USB_GET_STRING_DESC: { 1738 int len; 1739 si = (struct usb_string_desc *)addr; 1740 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1741 si->usd_language_id, &si->usd_desc, &len); 1742 if (err) 1743 return EINVAL; 1744 break; 1745 } 1746 case USB_DO_REQUEST: 1747 { 1748 struct usb_ctl_request *ur = (void *)addr; 1749 int len = UGETW(ur->ucr_request.wLength); 1750 struct iovec iov; 1751 struct uio uio; 1752 void *ptr = 0; 1753 usbd_status xerr; 1754 1755 error = 0; 1756 1757 if (!(flag & FWRITE)) 1758 return EPERM; 1759 /* Avoid requests that would damage the bus integrity. */ 1760 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1761 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1762 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1763 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1764 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1765 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1766 return EINVAL; 1767 1768 if (len < 0 || len > 32767) 1769 return EINVAL; 1770 if (len != 0) { 1771 iov.iov_base = (void *)ur->ucr_data; 1772 iov.iov_len = len; 1773 uio.uio_iov = &iov; 1774 uio.uio_iovcnt = 1; 1775 uio.uio_resid = len; 1776 uio.uio_offset = 0; 1777 uio.uio_rw = 1778 ur->ucr_request.bmRequestType & UT_READ ? 1779 UIO_READ : UIO_WRITE; 1780 uio.uio_vmspace = l->l_proc->p_vmspace; 1781 ptr = kmem_alloc(len, KM_SLEEP); 1782 if (uio.uio_rw == UIO_WRITE) { 1783 error = uiomove(ptr, len, &uio); 1784 if (error) 1785 goto ret; 1786 } 1787 } 1788 sce = &sc->sc_endpoints[endpt][IN]; 1789 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1790 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1791 if (xerr) { 1792 error = EIO; 1793 goto ret; 1794 } 1795 if (len != 0) { 1796 if (uio.uio_rw == UIO_READ) { 1797 size_t alen = min(len, ur->ucr_actlen); 1798 error = uiomove(ptr, alen, &uio); 1799 if (error) 1800 goto ret; 1801 } 1802 } 1803 ret: 1804 if (ptr) 1805 kmem_free(ptr, len); 1806 return error; 1807 } 1808 case USB_GET_DEVICEINFO: 1809 usbd_fill_deviceinfo(sc->sc_udev, 1810 (struct usb_device_info *)addr, 0); 1811 break; 1812 #ifdef COMPAT_30 1813 case USB_GET_DEVICEINFO_OLD: 1814 usbd_fill_deviceinfo_old(sc->sc_udev, 1815 (struct usb_device_info_old *)addr, 0); 1816 1817 break; 1818 #endif 1819 default: 1820 return EINVAL; 1821 } 1822 return 0; 1823 } 1824 1825 int 1826 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1827 { 1828 int endpt = UGENENDPOINT(dev); 1829 struct ugen_softc *sc; 1830 int error; 1831 1832 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1833 if (sc == NULL) 1834 return ENXIO; 1835 1836 sc->sc_refcnt++; 1837 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1838 if (--sc->sc_refcnt < 0) 1839 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1840 return error; 1841 } 1842 1843 int 1844 ugenpoll(dev_t dev, int events, struct lwp *l) 1845 { 1846 struct ugen_softc *sc; 1847 struct ugen_endpoint *sce_in, *sce_out; 1848 int revents = 0; 1849 1850 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1851 if (sc == NULL) 1852 return ENXIO; 1853 1854 if (sc->sc_dying) 1855 return POLLHUP; 1856 1857 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1858 return ENODEV; 1859 1860 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1861 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1862 if (sce_in == NULL && sce_out == NULL) 1863 return POLLERR; 1864 #ifdef DIAGNOSTIC 1865 if (!sce_in->edesc && !sce_out->edesc) { 1866 printf("ugenpoll: no edesc\n"); 1867 return POLLERR; 1868 } 1869 /* It's possible to have only one pipe open. */ 1870 if (!sce_in->pipeh && !sce_out->pipeh) { 1871 printf("ugenpoll: no pipe\n"); 1872 return POLLERR; 1873 } 1874 #endif 1875 1876 mutex_enter(&sc->sc_lock); 1877 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1878 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1879 case UE_INTERRUPT: 1880 if (sce_in->q.c_cc > 0) 1881 revents |= events & (POLLIN | POLLRDNORM); 1882 else 1883 selrecord(l, &sce_in->rsel); 1884 break; 1885 case UE_ISOCHRONOUS: 1886 if (sce_in->cur != sce_in->fill) 1887 revents |= events & (POLLIN | POLLRDNORM); 1888 else 1889 selrecord(l, &sce_in->rsel); 1890 break; 1891 case UE_BULK: 1892 if (sce_in->state & UGEN_BULK_RA) { 1893 if (sce_in->ra_wb_used > 0) 1894 revents |= events & 1895 (POLLIN | POLLRDNORM); 1896 else 1897 selrecord(l, &sce_in->rsel); 1898 break; 1899 } 1900 /* 1901 * We have no easy way of determining if a read will 1902 * yield any data or a write will happen. 1903 * Pretend they will. 1904 */ 1905 revents |= events & (POLLIN | POLLRDNORM); 1906 break; 1907 default: 1908 break; 1909 } 1910 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1911 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1912 case UE_INTERRUPT: 1913 case UE_ISOCHRONOUS: 1914 /* XXX unimplemented */ 1915 break; 1916 case UE_BULK: 1917 if (sce_out->state & UGEN_BULK_WB) { 1918 if (sce_out->ra_wb_used < 1919 sce_out->limit - sce_out->ibuf) 1920 revents |= events & 1921 (POLLOUT | POLLWRNORM); 1922 else 1923 selrecord(l, &sce_out->rsel); 1924 break; 1925 } 1926 /* 1927 * We have no easy way of determining if a read will 1928 * yield any data or a write will happen. 1929 * Pretend they will. 1930 */ 1931 revents |= events & (POLLOUT | POLLWRNORM); 1932 break; 1933 default: 1934 break; 1935 } 1936 1937 mutex_exit(&sc->sc_lock); 1938 1939 return revents; 1940 } 1941 1942 static void 1943 filt_ugenrdetach(struct knote *kn) 1944 { 1945 struct ugen_endpoint *sce = kn->kn_hook; 1946 struct ugen_softc *sc = sce->sc; 1947 1948 mutex_enter(&sc->sc_lock); 1949 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1950 mutex_exit(&sc->sc_lock); 1951 } 1952 1953 static int 1954 filt_ugenread_intr(struct knote *kn, long hint) 1955 { 1956 struct ugen_endpoint *sce = kn->kn_hook; 1957 1958 kn->kn_data = sce->q.c_cc; 1959 return kn->kn_data > 0; 1960 } 1961 1962 static int 1963 filt_ugenread_isoc(struct knote *kn, long hint) 1964 { 1965 struct ugen_endpoint *sce = kn->kn_hook; 1966 1967 if (sce->cur == sce->fill) 1968 return 0; 1969 1970 if (sce->cur < sce->fill) 1971 kn->kn_data = sce->fill - sce->cur; 1972 else 1973 kn->kn_data = (sce->limit - sce->cur) + 1974 (sce->fill - sce->ibuf); 1975 1976 return 1; 1977 } 1978 1979 static int 1980 filt_ugenread_bulk(struct knote *kn, long hint) 1981 { 1982 struct ugen_endpoint *sce = kn->kn_hook; 1983 1984 if (!(sce->state & UGEN_BULK_RA)) 1985 /* 1986 * We have no easy way of determining if a read will 1987 * yield any data or a write will happen. 1988 * So, emulate "seltrue". 1989 */ 1990 return filt_seltrue(kn, hint); 1991 1992 if (sce->ra_wb_used == 0) 1993 return 0; 1994 1995 kn->kn_data = sce->ra_wb_used; 1996 1997 return 1; 1998 } 1999 2000 static int 2001 filt_ugenwrite_bulk(struct knote *kn, long hint) 2002 { 2003 struct ugen_endpoint *sce = kn->kn_hook; 2004 2005 if (!(sce->state & UGEN_BULK_WB)) 2006 /* 2007 * We have no easy way of determining if a read will 2008 * yield any data or a write will happen. 2009 * So, emulate "seltrue". 2010 */ 2011 return filt_seltrue(kn, hint); 2012 2013 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2014 return 0; 2015 2016 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2017 2018 return 1; 2019 } 2020 2021 static const struct filterops ugenread_intr_filtops = 2022 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2023 2024 static const struct filterops ugenread_isoc_filtops = 2025 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2026 2027 static const struct filterops ugenread_bulk_filtops = 2028 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2029 2030 static const struct filterops ugenwrite_bulk_filtops = 2031 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2032 2033 int 2034 ugenkqfilter(dev_t dev, struct knote *kn) 2035 { 2036 struct ugen_softc *sc; 2037 struct ugen_endpoint *sce; 2038 struct klist *klist; 2039 2040 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2041 if (sc == NULL) 2042 return ENXIO; 2043 2044 if (sc->sc_dying) 2045 return ENXIO; 2046 2047 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2048 return ENODEV; 2049 2050 switch (kn->kn_filter) { 2051 case EVFILT_READ: 2052 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2053 if (sce == NULL) 2054 return EINVAL; 2055 2056 klist = &sce->rsel.sel_klist; 2057 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2058 case UE_INTERRUPT: 2059 kn->kn_fop = &ugenread_intr_filtops; 2060 break; 2061 case UE_ISOCHRONOUS: 2062 kn->kn_fop = &ugenread_isoc_filtops; 2063 break; 2064 case UE_BULK: 2065 kn->kn_fop = &ugenread_bulk_filtops; 2066 break; 2067 default: 2068 return EINVAL; 2069 } 2070 break; 2071 2072 case EVFILT_WRITE: 2073 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2074 if (sce == NULL) 2075 return EINVAL; 2076 2077 klist = &sce->rsel.sel_klist; 2078 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2079 case UE_INTERRUPT: 2080 case UE_ISOCHRONOUS: 2081 /* XXX poll doesn't support this */ 2082 return EINVAL; 2083 2084 case UE_BULK: 2085 kn->kn_fop = &ugenwrite_bulk_filtops; 2086 break; 2087 default: 2088 return EINVAL; 2089 } 2090 break; 2091 2092 default: 2093 return EINVAL; 2094 } 2095 2096 kn->kn_hook = sce; 2097 2098 mutex_enter(&sc->sc_lock); 2099 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2100 mutex_exit(&sc->sc_lock); 2101 2102 return 0; 2103 } 2104
Indexes created Sat Oct 18 17:09:52 GMT 2025