ugen.c revision 1.137
1 /* $NetBSD: ugen.c,v 1.137 2018/01/21 13:57:12 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 1.137 2018/01/21 13:57:12 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 Static void ugen_clear_endpoints(struct ugen_softc *); 179 180 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 181 #define UGENENDPOINT(n) (minor(n) & 0xf) 182 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 183 184 int ugen_match(device_t, cfdata_t, void *); 185 void ugen_attach(device_t, device_t, void *); 186 int ugen_detach(device_t, int); 187 int ugen_activate(device_t, enum devact); 188 extern struct cfdriver ugen_cd; 189 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, ugen_attach, 190 ugen_detach, ugen_activate); 191 192 /* toggle to control attach priority. -1 means "let autoconf decide" */ 193 int ugen_override = -1; 194 195 int 196 ugen_match(device_t parent, cfdata_t match, void *aux) 197 { 198 struct usb_attach_arg *uaa = aux; 199 int override; 200 201 if (ugen_override != -1) 202 override = ugen_override; 203 else 204 override = match->cf_flags & 1; 205 206 if (override) 207 return UMATCH_HIGHEST; 208 else if (uaa->uaa_usegeneric) 209 return UMATCH_GENERIC; 210 else 211 return UMATCH_NONE; 212 } 213 214 void 215 ugen_attach(device_t parent, device_t self, void *aux) 216 { 217 struct ugen_softc *sc = device_private(self); 218 struct usb_attach_arg *uaa = aux; 219 struct usbd_device *udev; 220 char *devinfop; 221 usbd_status err; 222 int i, dir, conf; 223 224 aprint_naive("\n"); 225 aprint_normal("\n"); 226 227 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 228 cv_init(&sc->sc_detach_cv, "ugendet"); 229 230 devinfop = usbd_devinfo_alloc(uaa->uaa_device, 0); 231 aprint_normal_dev(self, "%s\n", devinfop); 232 usbd_devinfo_free(devinfop); 233 234 sc->sc_dev = self; 235 sc->sc_udev = udev = uaa->uaa_device; 236 237 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 238 for (dir = OUT; dir <= IN; dir++) { 239 struct ugen_endpoint *sce; 240 241 sce = &sc->sc_endpoints[i][dir]; 242 selinit(&sce->rsel); 243 cv_init(&sce->cv, "ugensce"); 244 } 245 } 246 247 /* First set configuration index 0, the default one for ugen. */ 248 err = usbd_set_config_index(udev, 0, 0); 249 if (err) { 250 aprint_error_dev(self, 251 "setting configuration index 0 failed\n"); 252 sc->sc_dying = 1; 253 return; 254 } 255 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 256 257 /* Set up all the local state for this configuration. */ 258 err = ugen_set_config(sc, conf); 259 if (err) { 260 aprint_error_dev(self, "setting configuration %d failed\n", 261 conf); 262 sc->sc_dying = 1; 263 return; 264 } 265 266 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 267 268 if (!pmf_device_register(self, NULL, NULL)) 269 aprint_error_dev(self, "couldn't establish power handler\n"); 270 271 return; 272 } 273 274 Static void 275 ugen_clear_endpoints(struct ugen_softc *sc) 276 { 277 278 /* Clear out the old info, but leave the selinfo and cv initialised. */ 279 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 280 for (int dir = OUT; dir <= IN; dir++) { 281 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 282 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 283 } 284 } 285 } 286 287 Static int 288 ugen_set_config(struct ugen_softc *sc, int configno) 289 { 290 struct usbd_device *dev = sc->sc_udev; 291 usb_config_descriptor_t *cdesc; 292 struct usbd_interface *iface; 293 usb_endpoint_descriptor_t *ed; 294 struct ugen_endpoint *sce; 295 uint8_t niface, nendpt; 296 int ifaceno, endptno, endpt; 297 usbd_status err; 298 int dir; 299 300 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 301 device_xname(sc->sc_dev), configno, sc)); 302 303 /* 304 * We start at 1, not 0, because we don't care whether the 305 * control endpoint is open or not. It is always present. 306 */ 307 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 308 if (sc->sc_is_open[endptno]) { 309 DPRINTFN(1, 310 ("ugen_set_config: %s - endpoint %d is open\n", 311 device_xname(sc->sc_dev), endptno)); 312 return USBD_IN_USE; 313 } 314 315 /* Avoid setting the current value. */ 316 cdesc = usbd_get_config_descriptor(dev); 317 if (!cdesc || cdesc->bConfigurationValue != configno) { 318 err = usbd_set_config_no(dev, configno, 1); 319 if (err) 320 return err; 321 } 322 323 err = usbd_interface_count(dev, &niface); 324 if (err) 325 return err; 326 327 ugen_clear_endpoints(sc); 328 329 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 330 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 331 err = usbd_device2interface_handle(dev, ifaceno, &iface); 332 if (err) 333 return err; 334 err = usbd_endpoint_count(iface, &nendpt); 335 if (err) 336 return err; 337 for (endptno = 0; endptno < nendpt; endptno++) { 338 ed = usbd_interface2endpoint_descriptor(iface,endptno); 339 KASSERT(ed != NULL); 340 endpt = ed->bEndpointAddress; 341 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 342 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 343 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 344 "(%d,%d), sce=%p\n", 345 endptno, endpt, UE_GET_ADDR(endpt), 346 UE_GET_DIR(endpt), sce)); 347 sce->sc = sc; 348 sce->edesc = ed; 349 sce->iface = iface; 350 } 351 } 352 return USBD_NORMAL_COMPLETION; 353 } 354 355 int 356 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 357 { 358 struct ugen_softc *sc; 359 int unit = UGENUNIT(dev); 360 int endpt = UGENENDPOINT(dev); 361 usb_endpoint_descriptor_t *edesc; 362 struct ugen_endpoint *sce; 363 int dir, isize; 364 usbd_status err; 365 struct usbd_xfer *xfer; 366 int i, j; 367 368 sc = device_lookup_private(&ugen_cd, unit); 369 if (sc == NULL || sc->sc_dying) 370 return ENXIO; 371 372 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 373 flag, mode, unit, endpt)); 374 375 /* The control endpoint allows multiple opens. */ 376 if (endpt == USB_CONTROL_ENDPOINT) { 377 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 378 return 0; 379 } 380 381 if (sc->sc_is_open[endpt]) 382 return EBUSY; 383 384 /* Make sure there are pipes for all directions. */ 385 for (dir = OUT; dir <= IN; dir++) { 386 if (flag & (dir == OUT ? FWRITE : FREAD)) { 387 sce = &sc->sc_endpoints[endpt][dir]; 388 if (sce->edesc == NULL) 389 return ENXIO; 390 } 391 } 392 393 /* Actually open the pipes. */ 394 /* XXX Should back out properly if it fails. */ 395 for (dir = OUT; dir <= IN; dir++) { 396 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 397 continue; 398 sce = &sc->sc_endpoints[endpt][dir]; 399 sce->state = 0; 400 sce->timeout = USBD_NO_TIMEOUT; 401 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 402 sc, endpt, dir, sce)); 403 edesc = sce->edesc; 404 switch (edesc->bmAttributes & UE_XFERTYPE) { 405 case UE_INTERRUPT: 406 if (dir == OUT) { 407 err = usbd_open_pipe(sce->iface, 408 edesc->bEndpointAddress, 0, &sce->pipeh); 409 if (err) 410 return EIO; 411 break; 412 } 413 isize = UGETW(edesc->wMaxPacketSize); 414 if (isize == 0) /* shouldn't happen */ 415 return EINVAL; 416 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 417 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 418 endpt, isize)); 419 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 420 kmem_free(sce->ibuf, isize); 421 sce->ibuf = NULL; 422 return ENOMEM; 423 } 424 err = usbd_open_pipe_intr(sce->iface, 425 edesc->bEndpointAddress, 426 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 427 sce->ibuf, isize, ugenintr, 428 USBD_DEFAULT_INTERVAL); 429 if (err) { 430 clfree(&sce->q); 431 kmem_free(sce->ibuf, isize); 432 sce->ibuf = NULL; 433 return EIO; 434 } 435 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 436 break; 437 case UE_BULK: 438 err = usbd_open_pipe(sce->iface, 439 edesc->bEndpointAddress, 0, &sce->pipeh); 440 if (err) 441 return EIO; 442 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 443 /* 444 * Use request size for non-RA/WB transfers 445 * as the default. 446 */ 447 sce->ra_wb_reqsize = UGEN_BBSIZE; 448 break; 449 case UE_ISOCHRONOUS: 450 if (dir == OUT) 451 return EINVAL; 452 isize = UGETW(edesc->wMaxPacketSize); 453 if (isize == 0) /* shouldn't happen */ 454 return EINVAL; 455 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 456 KM_SLEEP); 457 sce->cur = sce->fill = sce->ibuf; 458 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 459 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 460 endpt, isize)); 461 err = usbd_open_pipe(sce->iface, 462 edesc->bEndpointAddress, 0, &sce->pipeh); 463 if (err) { 464 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 465 sce->ibuf = NULL; 466 return EIO; 467 } 468 for (i = 0; i < UGEN_NISOREQS; ++i) { 469 sce->isoreqs[i].sce = sce; 470 err = usbd_create_xfer(sce->pipeh, 471 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 472 &xfer); 473 if (err) 474 goto bad; 475 sce->isoreqs[i].xfer = xfer; 476 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 477 for (j = 0; j < UGEN_NISORFRMS; ++j) 478 sce->isoreqs[i].sizes[j] = isize; 479 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 480 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 481 ugen_isoc_rintr); 482 (void)usbd_transfer(xfer); 483 } 484 DPRINTFN(5, ("ugenopen: isoc open done\n")); 485 break; 486 bad: 487 while (--i >= 0) /* implicit buffer free */ 488 usbd_destroy_xfer(sce->isoreqs[i].xfer); 489 usbd_close_pipe(sce->pipeh); 490 sce->pipeh = NULL; 491 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 492 sce->ibuf = NULL; 493 return ENOMEM; 494 case UE_CONTROL: 495 sce->timeout = USBD_DEFAULT_TIMEOUT; 496 return EINVAL; 497 } 498 } 499 sc->sc_is_open[endpt] = 1; 500 return 0; 501 } 502 503 int 504 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 505 { 506 int endpt = UGENENDPOINT(dev); 507 struct ugen_softc *sc; 508 struct ugen_endpoint *sce; 509 int dir; 510 int i; 511 512 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 513 if (sc == NULL || sc->sc_dying) 514 return ENXIO; 515 516 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 517 flag, mode, UGENUNIT(dev), endpt)); 518 519 #ifdef DIAGNOSTIC 520 if (!sc->sc_is_open[endpt]) { 521 printf("ugenclose: not open\n"); 522 return EINVAL; 523 } 524 #endif 525 526 if (endpt == USB_CONTROL_ENDPOINT) { 527 DPRINTFN(5, ("ugenclose: close control\n")); 528 sc->sc_is_open[endpt] = 0; 529 return 0; 530 } 531 532 for (dir = OUT; dir <= IN; dir++) { 533 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 534 continue; 535 sce = &sc->sc_endpoints[endpt][dir]; 536 if (sce->pipeh == NULL) 537 continue; 538 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 539 endpt, dir, sce)); 540 541 usbd_abort_pipe(sce->pipeh); 542 543 int isize = UGETW(sce->edesc->wMaxPacketSize); 544 int msize = 0; 545 546 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 547 case UE_INTERRUPT: 548 ndflush(&sce->q, sce->q.c_cc); 549 clfree(&sce->q); 550 msize = isize; 551 break; 552 case UE_ISOCHRONOUS: 553 for (i = 0; i < UGEN_NISOREQS; ++i) 554 usbd_destroy_xfer(sce->isoreqs[i].xfer); 555 msize = isize * UGEN_NISOFRAMES; 556 break; 557 case UE_BULK: 558 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 559 usbd_destroy_xfer(sce->ra_wb_xfer); 560 msize = sce->ra_wb_bufsize; 561 } 562 break; 563 default: 564 break; 565 } 566 usbd_close_pipe(sce->pipeh); 567 sce->pipeh = NULL; 568 if (sce->ibuf != NULL) { 569 kmem_free(sce->ibuf, msize); 570 sce->ibuf = NULL; 571 } 572 } 573 sc->sc_is_open[endpt] = 0; 574 575 return 0; 576 } 577 578 Static int 579 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 580 { 581 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 582 uint32_t n, tn; 583 struct usbd_xfer *xfer; 584 usbd_status err; 585 int error = 0; 586 587 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 588 589 if (endpt == USB_CONTROL_ENDPOINT) 590 return ENODEV; 591 592 #ifdef DIAGNOSTIC 593 if (sce->edesc == NULL) { 594 printf("ugenread: no edesc\n"); 595 return EIO; 596 } 597 if (sce->pipeh == NULL) { 598 printf("ugenread: no pipe\n"); 599 return EIO; 600 } 601 #endif 602 603 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 604 case UE_INTERRUPT: 605 /* Block until activity occurred. */ 606 mutex_enter(&sc->sc_lock); 607 while (sce->q.c_cc == 0) { 608 if (flag & IO_NDELAY) { 609 mutex_exit(&sc->sc_lock); 610 return EWOULDBLOCK; 611 } 612 sce->state |= UGEN_ASLP; 613 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 614 /* "ugenri" */ 615 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 616 mstohz(sce->timeout)); 617 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 618 if (sc->sc_dying) 619 error = EIO; 620 if (error) { 621 sce->state &= ~UGEN_ASLP; 622 break; 623 } 624 } 625 mutex_exit(&sc->sc_lock); 626 627 /* Transfer as many chunks as possible. */ 628 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 629 n = min(sce->q.c_cc, uio->uio_resid); 630 if (n > sizeof(sc->sc_buffer)) 631 n = sizeof(sc->sc_buffer); 632 633 /* Remove a small chunk from the input queue. */ 634 q_to_b(&sce->q, sc->sc_buffer, n); 635 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 636 637 /* Copy the data to the user process. */ 638 error = uiomove(sc->sc_buffer, n, uio); 639 if (error) 640 break; 641 } 642 break; 643 case UE_BULK: 644 if (sce->state & UGEN_BULK_RA) { 645 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 646 uio->uio_resid, sce->ra_wb_used)); 647 xfer = sce->ra_wb_xfer; 648 649 mutex_enter(&sc->sc_lock); 650 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 651 mutex_exit(&sc->sc_lock); 652 return EWOULDBLOCK; 653 } 654 while (uio->uio_resid > 0 && !error) { 655 while (sce->ra_wb_used == 0) { 656 sce->state |= UGEN_ASLP; 657 DPRINTFN(5, 658 ("ugenread: sleep on %p\n", 659 sce)); 660 /* "ugenrb" */ 661 error = cv_timedwait_sig(&sce->cv, 662 &sc->sc_lock, mstohz(sce->timeout)); 663 DPRINTFN(5, 664 ("ugenread: woke, error=%d\n", 665 error)); 666 if (sc->sc_dying) 667 error = EIO; 668 if (error) { 669 sce->state &= ~UGEN_ASLP; 670 break; 671 } 672 } 673 674 /* Copy data to the process. */ 675 while (uio->uio_resid > 0 676 && sce->ra_wb_used > 0) { 677 n = min(uio->uio_resid, 678 sce->ra_wb_used); 679 n = min(n, sce->limit - sce->cur); 680 error = uiomove(sce->cur, n, uio); 681 if (error) 682 break; 683 sce->cur += n; 684 sce->ra_wb_used -= n; 685 if (sce->cur == sce->limit) 686 sce->cur = sce->ibuf; 687 } 688 689 /* 690 * If the transfers stopped because the 691 * buffer was full, restart them. 692 */ 693 if (sce->state & UGEN_RA_WB_STOP && 694 sce->ra_wb_used < sce->limit - sce->ibuf) { 695 n = (sce->limit - sce->ibuf) 696 - sce->ra_wb_used; 697 usbd_setup_xfer(xfer, sce, NULL, 698 min(n, sce->ra_wb_xferlen), 699 0, USBD_NO_TIMEOUT, 700 ugen_bulkra_intr); 701 sce->state &= ~UGEN_RA_WB_STOP; 702 err = usbd_transfer(xfer); 703 if (err != USBD_IN_PROGRESS) 704 /* 705 * The transfer has not been 706 * queued. Setting STOP 707 * will make us try 708 * again at the next read. 709 */ 710 sce->state |= UGEN_RA_WB_STOP; 711 } 712 } 713 mutex_exit(&sc->sc_lock); 714 break; 715 } 716 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 717 0, 0, &xfer); 718 if (error) 719 return error; 720 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 721 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 722 tn = n; 723 err = usbd_bulk_transfer(xfer, sce->pipeh, 724 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 725 sce->timeout, sc->sc_buffer, &tn); 726 if (err) { 727 if (err == USBD_INTERRUPTED) 728 error = EINTR; 729 else if (err == USBD_TIMEOUT) 730 error = ETIMEDOUT; 731 else 732 error = EIO; 733 break; 734 } 735 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 736 error = uiomove(sc->sc_buffer, tn, uio); 737 if (error || tn < n) 738 break; 739 } 740 usbd_destroy_xfer(xfer); 741 break; 742 case UE_ISOCHRONOUS: 743 mutex_enter(&sc->sc_lock); 744 while (sce->cur == sce->fill) { 745 if (flag & IO_NDELAY) { 746 mutex_exit(&sc->sc_lock); 747 return EWOULDBLOCK; 748 } 749 sce->state |= UGEN_ASLP; 750 /* "ugenri" */ 751 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 752 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 753 mstohz(sce->timeout)); 754 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 755 if (sc->sc_dying) 756 error = EIO; 757 if (error) { 758 sce->state &= ~UGEN_ASLP; 759 break; 760 } 761 } 762 763 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 764 if(sce->fill > sce->cur) 765 n = min(sce->fill - sce->cur, uio->uio_resid); 766 else 767 n = min(sce->limit - sce->cur, uio->uio_resid); 768 769 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 770 771 /* Copy the data to the user process. */ 772 error = uiomove(sce->cur, n, uio); 773 if (error) 774 break; 775 sce->cur += n; 776 if (sce->cur >= sce->limit) 777 sce->cur = sce->ibuf; 778 } 779 mutex_exit(&sc->sc_lock); 780 break; 781 782 783 default: 784 return ENXIO; 785 } 786 return error; 787 } 788 789 int 790 ugenread(dev_t dev, struct uio *uio, int flag) 791 { 792 int endpt = UGENENDPOINT(dev); 793 struct ugen_softc *sc; 794 int error; 795 796 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 797 if (sc == NULL || sc->sc_dying) 798 return ENXIO; 799 800 mutex_enter(&sc->sc_lock); 801 sc->sc_refcnt++; 802 mutex_exit(&sc->sc_lock); 803 804 error = ugen_do_read(sc, endpt, uio, flag); 805 806 mutex_enter(&sc->sc_lock); 807 if (--sc->sc_refcnt < 0) 808 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 809 mutex_exit(&sc->sc_lock); 810 811 return error; 812 } 813 814 Static int 815 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 816 int flag) 817 { 818 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 819 uint32_t n; 820 int error = 0; 821 uint32_t tn; 822 char *dbuf; 823 struct usbd_xfer *xfer; 824 usbd_status err; 825 826 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 827 828 if (endpt == USB_CONTROL_ENDPOINT) 829 return ENODEV; 830 831 #ifdef DIAGNOSTIC 832 if (sce->edesc == NULL) { 833 printf("ugenwrite: no edesc\n"); 834 return EIO; 835 } 836 if (sce->pipeh == NULL) { 837 printf("ugenwrite: no pipe\n"); 838 return EIO; 839 } 840 #endif 841 842 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 843 case UE_BULK: 844 if (sce->state & UGEN_BULK_WB) { 845 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 846 uio->uio_resid, sce->ra_wb_used)); 847 xfer = sce->ra_wb_xfer; 848 849 mutex_enter(&sc->sc_lock); 850 if (sce->ra_wb_used == sce->limit - sce->ibuf && 851 flag & IO_NDELAY) { 852 mutex_exit(&sc->sc_lock); 853 return EWOULDBLOCK; 854 } 855 while (uio->uio_resid > 0 && !error) { 856 while (sce->ra_wb_used == 857 sce->limit - sce->ibuf) { 858 sce->state |= UGEN_ASLP; 859 DPRINTFN(5, 860 ("ugenwrite: sleep on %p\n", 861 sce)); 862 /* "ugenwb" */ 863 error = cv_timedwait_sig(&sce->cv, 864 &sc->sc_lock, mstohz(sce->timeout)); 865 DPRINTFN(5, 866 ("ugenwrite: woke, error=%d\n", 867 error)); 868 if (sc->sc_dying) 869 error = EIO; 870 if (error) { 871 sce->state &= ~UGEN_ASLP; 872 break; 873 } 874 } 875 876 /* Copy data from the process. */ 877 while (uio->uio_resid > 0 && 878 sce->ra_wb_used < sce->limit - sce->ibuf) { 879 n = min(uio->uio_resid, 880 (sce->limit - sce->ibuf) 881 - sce->ra_wb_used); 882 n = min(n, sce->limit - sce->fill); 883 error = uiomove(sce->fill, n, uio); 884 if (error) 885 break; 886 sce->fill += n; 887 sce->ra_wb_used += n; 888 if (sce->fill == sce->limit) 889 sce->fill = sce->ibuf; 890 } 891 892 /* 893 * If the transfers stopped because the 894 * buffer was empty, restart them. 895 */ 896 if (sce->state & UGEN_RA_WB_STOP && 897 sce->ra_wb_used > 0) { 898 dbuf = (char *)usbd_get_buffer(xfer); 899 n = min(sce->ra_wb_used, 900 sce->ra_wb_xferlen); 901 tn = min(n, sce->limit - sce->cur); 902 memcpy(dbuf, sce->cur, tn); 903 dbuf += tn; 904 if (n - tn > 0) 905 memcpy(dbuf, sce->ibuf, 906 n - tn); 907 usbd_setup_xfer(xfer, sce, NULL, n, 908 0, USBD_NO_TIMEOUT, 909 ugen_bulkwb_intr); 910 sce->state &= ~UGEN_RA_WB_STOP; 911 err = usbd_transfer(xfer); 912 if (err != USBD_IN_PROGRESS) 913 /* 914 * The transfer has not been 915 * queued. Setting STOP 916 * will make us try again 917 * at the next read. 918 */ 919 sce->state |= UGEN_RA_WB_STOP; 920 } 921 } 922 mutex_exit(&sc->sc_lock); 923 break; 924 } 925 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 926 0, 0, &xfer); 927 if (error) 928 return error; 929 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 930 error = uiomove(sc->sc_buffer, n, uio); 931 if (error) 932 break; 933 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 934 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 935 sc->sc_buffer, &n); 936 if (err) { 937 if (err == USBD_INTERRUPTED) 938 error = EINTR; 939 else if (err == USBD_TIMEOUT) 940 error = ETIMEDOUT; 941 else 942 error = EIO; 943 break; 944 } 945 } 946 usbd_destroy_xfer(xfer); 947 break; 948 case UE_INTERRUPT: 949 error = usbd_create_xfer(sce->pipeh, 950 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 951 if (error) 952 return error; 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); 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_destroy_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 || sc->sc_dying) 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->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, sc->sc_dev); 1057 1058 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1059 for (dir = OUT; dir <= IN; dir++) { 1060 sce = &sc->sc_endpoints[i][dir]; 1061 seldestroy(&sce->rsel); 1062 cv_destroy(&sce->cv); 1063 } 1064 } 1065 1066 cv_destroy(&sc->sc_detach_cv); 1067 mutex_destroy(&sc->sc_lock); 1068 1069 return 0; 1070 } 1071 1072 Static void 1073 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1074 { 1075 struct ugen_endpoint *sce = addr; 1076 struct ugen_softc *sc = sce->sc; 1077 uint32_t count; 1078 u_char *ibuf; 1079 1080 if (status == USBD_CANCELLED) 1081 return; 1082 1083 if (status != USBD_NORMAL_COMPLETION) { 1084 DPRINTF(("ugenintr: status=%d\n", status)); 1085 if (status == USBD_STALLED) 1086 usbd_clear_endpoint_stall_async(sce->pipeh); 1087 return; 1088 } 1089 1090 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1091 ibuf = sce->ibuf; 1092 1093 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1094 xfer, status, count)); 1095 DPRINTFN(5, (" data = %02x %02x %02x\n", 1096 ibuf[0], ibuf[1], ibuf[2])); 1097 1098 (void)b_to_q(ibuf, count, &sce->q); 1099 1100 mutex_enter(&sc->sc_lock); 1101 if (sce->state & UGEN_ASLP) { 1102 sce->state &= ~UGEN_ASLP; 1103 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1104 cv_signal(&sce->cv); 1105 } 1106 mutex_exit(&sc->sc_lock); 1107 selnotify(&sce->rsel, 0, 0); 1108 } 1109 1110 Static void 1111 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1112 usbd_status status) 1113 { 1114 struct isoreq *req = addr; 1115 struct ugen_endpoint *sce = req->sce; 1116 struct ugen_softc *sc = sce->sc; 1117 uint32_t count, n; 1118 int i, isize; 1119 1120 /* Return if we are aborting. */ 1121 if (status == USBD_CANCELLED) 1122 return; 1123 1124 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1125 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1126 (long)(req - sce->isoreqs), count)); 1127 1128 /* throw away oldest input if the buffer is full */ 1129 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1130 sce->cur += count; 1131 if(sce->cur >= sce->limit) 1132 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1133 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1134 count)); 1135 } 1136 1137 isize = UGETW(sce->edesc->wMaxPacketSize); 1138 for (i = 0; i < UGEN_NISORFRMS; i++) { 1139 uint32_t actlen = req->sizes[i]; 1140 char const *tbuf = (char const *)req->dmabuf + isize * i; 1141 1142 /* copy data to buffer */ 1143 while (actlen > 0) { 1144 n = min(actlen, sce->limit - sce->fill); 1145 memcpy(sce->fill, tbuf, n); 1146 1147 tbuf += n; 1148 actlen -= n; 1149 sce->fill += n; 1150 if(sce->fill == sce->limit) 1151 sce->fill = sce->ibuf; 1152 } 1153 1154 /* setup size for next transfer */ 1155 req->sizes[i] = isize; 1156 } 1157 1158 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1159 ugen_isoc_rintr); 1160 (void)usbd_transfer(xfer); 1161 1162 mutex_enter(&sc->sc_lock); 1163 if (sce->state & UGEN_ASLP) { 1164 sce->state &= ~UGEN_ASLP; 1165 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1166 cv_signal(&sce->cv); 1167 } 1168 mutex_exit(&sc->sc_lock); 1169 selnotify(&sce->rsel, 0, 0); 1170 } 1171 1172 Static void 1173 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1174 usbd_status status) 1175 { 1176 struct ugen_endpoint *sce = addr; 1177 struct ugen_softc *sc = sce->sc; 1178 uint32_t count, n; 1179 char const *tbuf; 1180 usbd_status err; 1181 1182 /* Return if we are aborting. */ 1183 if (status == USBD_CANCELLED) 1184 return; 1185 1186 if (status != USBD_NORMAL_COMPLETION) { 1187 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1188 sce->state |= UGEN_RA_WB_STOP; 1189 if (status == USBD_STALLED) 1190 usbd_clear_endpoint_stall_async(sce->pipeh); 1191 return; 1192 } 1193 1194 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1195 1196 /* Keep track of how much is in the buffer. */ 1197 sce->ra_wb_used += count; 1198 1199 /* Copy data to buffer. */ 1200 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1201 n = min(count, sce->limit - sce->fill); 1202 memcpy(sce->fill, tbuf, n); 1203 tbuf += n; 1204 count -= n; 1205 sce->fill += n; 1206 if (sce->fill == sce->limit) 1207 sce->fill = sce->ibuf; 1208 if (count > 0) { 1209 memcpy(sce->fill, tbuf, count); 1210 sce->fill += count; 1211 } 1212 1213 /* Set up the next request if necessary. */ 1214 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1215 if (n > 0) { 1216 usbd_setup_xfer(xfer, sce, NULL, min(n, sce->ra_wb_xferlen), 0, 1217 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1218 err = usbd_transfer(xfer); 1219 if (err != USBD_IN_PROGRESS) { 1220 printf("usbd_bulkra_intr: error=%d\n", err); 1221 /* 1222 * The transfer has not been queued. Setting STOP 1223 * will make us try again at the next read. 1224 */ 1225 sce->state |= UGEN_RA_WB_STOP; 1226 } 1227 } 1228 else 1229 sce->state |= UGEN_RA_WB_STOP; 1230 1231 mutex_enter(&sc->sc_lock); 1232 if (sce->state & UGEN_ASLP) { 1233 sce->state &= ~UGEN_ASLP; 1234 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1235 cv_signal(&sce->cv); 1236 } 1237 mutex_exit(&sc->sc_lock); 1238 selnotify(&sce->rsel, 0, 0); 1239 } 1240 1241 Static void 1242 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1243 usbd_status status) 1244 { 1245 struct ugen_endpoint *sce = addr; 1246 struct ugen_softc *sc = sce->sc; 1247 uint32_t count, n; 1248 char *tbuf; 1249 usbd_status err; 1250 1251 /* Return if we are aborting. */ 1252 if (status == USBD_CANCELLED) 1253 return; 1254 1255 if (status != USBD_NORMAL_COMPLETION) { 1256 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1257 sce->state |= UGEN_RA_WB_STOP; 1258 if (status == USBD_STALLED) 1259 usbd_clear_endpoint_stall_async(sce->pipeh); 1260 return; 1261 } 1262 1263 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1264 1265 /* Keep track of how much is in the buffer. */ 1266 sce->ra_wb_used -= count; 1267 1268 /* Update buffer pointers. */ 1269 sce->cur += count; 1270 if (sce->cur >= sce->limit) 1271 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1272 1273 /* Set up next request if necessary. */ 1274 if (sce->ra_wb_used > 0) { 1275 /* copy data from buffer */ 1276 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1277 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1278 n = min(count, sce->limit - sce->cur); 1279 memcpy(tbuf, sce->cur, n); 1280 tbuf += n; 1281 if (count - n > 0) 1282 memcpy(tbuf, sce->ibuf, count - n); 1283 1284 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1285 ugen_bulkwb_intr); 1286 err = usbd_transfer(xfer); 1287 if (err != USBD_IN_PROGRESS) { 1288 printf("usbd_bulkwb_intr: error=%d\n", err); 1289 /* 1290 * The transfer has not been queued. Setting STOP 1291 * will make us try again at the next write. 1292 */ 1293 sce->state |= UGEN_RA_WB_STOP; 1294 } 1295 } 1296 else 1297 sce->state |= UGEN_RA_WB_STOP; 1298 1299 mutex_enter(&sc->sc_lock); 1300 if (sce->state & UGEN_ASLP) { 1301 sce->state &= ~UGEN_ASLP; 1302 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1303 cv_signal(&sce->cv); 1304 } 1305 mutex_exit(&sc->sc_lock); 1306 selnotify(&sce->rsel, 0, 0); 1307 } 1308 1309 Static usbd_status 1310 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1311 { 1312 struct usbd_interface *iface; 1313 usb_endpoint_descriptor_t *ed; 1314 usbd_status err; 1315 struct ugen_endpoint *sce; 1316 uint8_t niface, nendpt, endptno, endpt; 1317 int dir; 1318 1319 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1320 1321 err = usbd_interface_count(sc->sc_udev, &niface); 1322 if (err) 1323 return err; 1324 if (ifaceidx < 0 || ifaceidx >= niface) 1325 return USBD_INVAL; 1326 1327 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1328 if (err) 1329 return err; 1330 err = usbd_endpoint_count(iface, &nendpt); 1331 if (err) 1332 return err; 1333 1334 /* change setting */ 1335 err = usbd_set_interface(iface, altno); 1336 if (err) 1337 return err; 1338 1339 err = usbd_endpoint_count(iface, &nendpt); 1340 if (err) 1341 return err; 1342 1343 ugen_clear_endpoints(sc); 1344 1345 for (endptno = 0; endptno < nendpt; endptno++) { 1346 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1347 KASSERT(ed != NULL); 1348 endpt = ed->bEndpointAddress; 1349 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1350 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1351 sce->sc = sc; 1352 sce->edesc = ed; 1353 sce->iface = iface; 1354 } 1355 return 0; 1356 } 1357 1358 /* Retrieve a complete descriptor for a certain device and index. */ 1359 Static usb_config_descriptor_t * 1360 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1361 { 1362 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1363 int len; 1364 usbd_status err; 1365 1366 if (index == USB_CURRENT_CONFIG_INDEX) { 1367 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1368 len = UGETW(tdesc->wTotalLength); 1369 if (lenp) 1370 *lenp = len; 1371 cdesc = kmem_alloc(len, KM_SLEEP); 1372 memcpy(cdesc, tdesc, len); 1373 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1374 } else { 1375 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1376 if (err) 1377 return 0; 1378 len = UGETW(cdescr.wTotalLength); 1379 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1380 if (lenp) 1381 *lenp = len; 1382 cdesc = kmem_alloc(len, KM_SLEEP); 1383 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1384 if (err) { 1385 kmem_free(cdesc, len); 1386 return 0; 1387 } 1388 } 1389 return cdesc; 1390 } 1391 1392 Static int 1393 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1394 { 1395 struct usbd_interface *iface; 1396 usbd_status err; 1397 1398 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1399 if (err) 1400 return -1; 1401 return usbd_get_interface_altindex(iface); 1402 } 1403 1404 Static int 1405 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1406 void *addr, int flag, struct lwp *l) 1407 { 1408 struct ugen_endpoint *sce; 1409 usbd_status err; 1410 struct usbd_interface *iface; 1411 struct usb_config_desc *cd; 1412 usb_config_descriptor_t *cdesc; 1413 struct usb_interface_desc *id; 1414 usb_interface_descriptor_t *idesc; 1415 struct usb_endpoint_desc *ed; 1416 usb_endpoint_descriptor_t *edesc; 1417 struct usb_alt_interface *ai; 1418 struct usb_string_desc *si; 1419 uint8_t conf, alt; 1420 int cdesclen; 1421 int error; 1422 1423 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1424 if (sc->sc_dying) 1425 return EIO; 1426 1427 switch (cmd) { 1428 case FIONBIO: 1429 /* All handled in the upper FS layer. */ 1430 return 0; 1431 case USB_SET_SHORT_XFER: 1432 if (endpt == USB_CONTROL_ENDPOINT) 1433 return EINVAL; 1434 /* This flag only affects read */ 1435 sce = &sc->sc_endpoints[endpt][IN]; 1436 if (sce == NULL || sce->pipeh == NULL) 1437 return EINVAL; 1438 if (*(int *)addr) 1439 sce->state |= UGEN_SHORT_OK; 1440 else 1441 sce->state &= ~UGEN_SHORT_OK; 1442 return 0; 1443 case USB_SET_TIMEOUT: 1444 sce = &sc->sc_endpoints[endpt][IN]; 1445 if (sce == NULL 1446 /* XXX this shouldn't happen, but the distinction between 1447 input and output pipes isn't clear enough. 1448 || sce->pipeh == NULL */ 1449 ) 1450 return EINVAL; 1451 sce->timeout = *(int *)addr; 1452 return 0; 1453 case USB_SET_BULK_RA: 1454 if (endpt == USB_CONTROL_ENDPOINT) 1455 return EINVAL; 1456 sce = &sc->sc_endpoints[endpt][IN]; 1457 if (sce == NULL || sce->pipeh == NULL) 1458 return EINVAL; 1459 edesc = sce->edesc; 1460 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1461 return EINVAL; 1462 1463 if (*(int *)addr) { 1464 /* Only turn RA on if it's currently off. */ 1465 if (sce->state & UGEN_BULK_RA) 1466 return 0; 1467 1468 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1469 /* shouldn't happen */ 1470 return EINVAL; 1471 error = usbd_create_xfer(sce->pipeh, 1472 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1473 if (error) 1474 return error; 1475 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1476 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1477 sce->fill = sce->cur = sce->ibuf; 1478 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1479 sce->ra_wb_used = 0; 1480 sce->state |= UGEN_BULK_RA; 1481 sce->state &= ~UGEN_RA_WB_STOP; 1482 /* Now start reading. */ 1483 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1484 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1485 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1486 err = usbd_transfer(sce->ra_wb_xfer); 1487 if (err != USBD_IN_PROGRESS) { 1488 sce->state &= ~UGEN_BULK_RA; 1489 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1490 sce->ibuf = NULL; 1491 usbd_destroy_xfer(sce->ra_wb_xfer); 1492 return EIO; 1493 } 1494 } else { 1495 /* Only turn RA off if it's currently on. */ 1496 if (!(sce->state & UGEN_BULK_RA)) 1497 return 0; 1498 1499 sce->state &= ~UGEN_BULK_RA; 1500 usbd_abort_pipe(sce->pipeh); 1501 usbd_destroy_xfer(sce->ra_wb_xfer); 1502 /* 1503 * XXX Discard whatever's in the buffer, but we 1504 * should keep it around and drain the buffer 1505 * instead. 1506 */ 1507 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1508 sce->ibuf = NULL; 1509 } 1510 return 0; 1511 case USB_SET_BULK_WB: 1512 if (endpt == USB_CONTROL_ENDPOINT) 1513 return EINVAL; 1514 sce = &sc->sc_endpoints[endpt][OUT]; 1515 if (sce == NULL || sce->pipeh == NULL) 1516 return EINVAL; 1517 edesc = sce->edesc; 1518 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1519 return EINVAL; 1520 1521 if (*(int *)addr) { 1522 /* Only turn WB on if it's currently off. */ 1523 if (sce->state & UGEN_BULK_WB) 1524 return 0; 1525 1526 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1527 /* shouldn't happen */ 1528 return EINVAL; 1529 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1530 0, 0, &sce->ra_wb_xfer); 1531 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1532 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1533 sce->fill = sce->cur = sce->ibuf; 1534 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1535 sce->ra_wb_used = 0; 1536 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1537 } else { 1538 /* Only turn WB off if it's currently on. */ 1539 if (!(sce->state & UGEN_BULK_WB)) 1540 return 0; 1541 1542 sce->state &= ~UGEN_BULK_WB; 1543 /* 1544 * XXX Discard whatever's in the buffer, but we 1545 * should keep it around and keep writing to 1546 * drain the buffer instead. 1547 */ 1548 usbd_abort_pipe(sce->pipeh); 1549 usbd_destroy_xfer(sce->ra_wb_xfer); 1550 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1551 sce->ibuf = NULL; 1552 } 1553 return 0; 1554 case USB_SET_BULK_RA_OPT: 1555 case USB_SET_BULK_WB_OPT: 1556 { 1557 struct usb_bulk_ra_wb_opt *opt; 1558 1559 if (endpt == USB_CONTROL_ENDPOINT) 1560 return EINVAL; 1561 opt = (struct usb_bulk_ra_wb_opt *)addr; 1562 if (cmd == USB_SET_BULK_RA_OPT) 1563 sce = &sc->sc_endpoints[endpt][IN]; 1564 else 1565 sce = &sc->sc_endpoints[endpt][OUT]; 1566 if (sce == NULL || sce->pipeh == NULL) 1567 return EINVAL; 1568 if (opt->ra_wb_buffer_size < 1 || 1569 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1570 opt->ra_wb_request_size < 1 || 1571 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1572 return EINVAL; 1573 /* 1574 * XXX These changes do not take effect until the 1575 * next time RA/WB mode is enabled but they ought to 1576 * take effect immediately. 1577 */ 1578 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1579 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1580 return 0; 1581 } 1582 default: 1583 break; 1584 } 1585 1586 if (endpt != USB_CONTROL_ENDPOINT) 1587 return EINVAL; 1588 1589 switch (cmd) { 1590 #ifdef UGEN_DEBUG 1591 case USB_SETDEBUG: 1592 ugendebug = *(int *)addr; 1593 break; 1594 #endif 1595 case USB_GET_CONFIG: 1596 err = usbd_get_config(sc->sc_udev, &conf); 1597 if (err) 1598 return EIO; 1599 *(int *)addr = conf; 1600 break; 1601 case USB_SET_CONFIG: 1602 if (!(flag & FWRITE)) 1603 return EPERM; 1604 err = ugen_set_config(sc, *(int *)addr); 1605 switch (err) { 1606 case USBD_NORMAL_COMPLETION: 1607 break; 1608 case USBD_IN_USE: 1609 return EBUSY; 1610 default: 1611 return EIO; 1612 } 1613 break; 1614 case USB_GET_ALTINTERFACE: 1615 ai = (struct usb_alt_interface *)addr; 1616 err = usbd_device2interface_handle(sc->sc_udev, 1617 ai->uai_interface_index, &iface); 1618 if (err) 1619 return EINVAL; 1620 idesc = usbd_get_interface_descriptor(iface); 1621 if (idesc == NULL) 1622 return EIO; 1623 ai->uai_alt_no = idesc->bAlternateSetting; 1624 break; 1625 case USB_SET_ALTINTERFACE: 1626 if (!(flag & FWRITE)) 1627 return EPERM; 1628 ai = (struct usb_alt_interface *)addr; 1629 err = usbd_device2interface_handle(sc->sc_udev, 1630 ai->uai_interface_index, &iface); 1631 if (err) 1632 return EINVAL; 1633 err = ugen_set_interface(sc, ai->uai_interface_index, 1634 ai->uai_alt_no); 1635 if (err) 1636 return EINVAL; 1637 break; 1638 case USB_GET_NO_ALT: 1639 ai = (struct usb_alt_interface *)addr; 1640 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1641 if (cdesc == NULL) 1642 return EINVAL; 1643 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1644 if (idesc == NULL) { 1645 kmem_free(cdesc, cdesclen); 1646 return EINVAL; 1647 } 1648 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1649 idesc->bInterfaceNumber); 1650 kmem_free(cdesc, cdesclen); 1651 break; 1652 case USB_GET_DEVICE_DESC: 1653 *(usb_device_descriptor_t *)addr = 1654 *usbd_get_device_descriptor(sc->sc_udev); 1655 break; 1656 case USB_GET_CONFIG_DESC: 1657 cd = (struct usb_config_desc *)addr; 1658 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1659 if (cdesc == NULL) 1660 return EINVAL; 1661 cd->ucd_desc = *cdesc; 1662 kmem_free(cdesc, cdesclen); 1663 break; 1664 case USB_GET_INTERFACE_DESC: 1665 id = (struct usb_interface_desc *)addr; 1666 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1667 if (cdesc == NULL) 1668 return EINVAL; 1669 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1670 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1671 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1672 else 1673 alt = id->uid_alt_index; 1674 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1675 if (idesc == NULL) { 1676 kmem_free(cdesc, cdesclen); 1677 return EINVAL; 1678 } 1679 id->uid_desc = *idesc; 1680 kmem_free(cdesc, cdesclen); 1681 break; 1682 case USB_GET_ENDPOINT_DESC: 1683 ed = (struct usb_endpoint_desc *)addr; 1684 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1685 if (cdesc == NULL) 1686 return EINVAL; 1687 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1688 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1689 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1690 else 1691 alt = ed->ued_alt_index; 1692 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1693 alt, ed->ued_endpoint_index); 1694 if (edesc == NULL) { 1695 kmem_free(cdesc, cdesclen); 1696 return EINVAL; 1697 } 1698 ed->ued_desc = *edesc; 1699 kmem_free(cdesc, cdesclen); 1700 break; 1701 case USB_GET_FULL_DESC: 1702 { 1703 int len; 1704 struct iovec iov; 1705 struct uio uio; 1706 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1707 1708 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1709 if (cdesc == NULL) 1710 return EINVAL; 1711 len = cdesclen; 1712 if (len > fd->ufd_size) 1713 len = fd->ufd_size; 1714 iov.iov_base = (void *)fd->ufd_data; 1715 iov.iov_len = len; 1716 uio.uio_iov = &iov; 1717 uio.uio_iovcnt = 1; 1718 uio.uio_resid = len; 1719 uio.uio_offset = 0; 1720 uio.uio_rw = UIO_READ; 1721 uio.uio_vmspace = l->l_proc->p_vmspace; 1722 error = uiomove((void *)cdesc, len, &uio); 1723 kmem_free(cdesc, cdesclen); 1724 return error; 1725 } 1726 case USB_GET_STRING_DESC: { 1727 int len; 1728 si = (struct usb_string_desc *)addr; 1729 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1730 si->usd_language_id, &si->usd_desc, &len); 1731 if (err) 1732 return EINVAL; 1733 break; 1734 } 1735 case USB_DO_REQUEST: 1736 { 1737 struct usb_ctl_request *ur = (void *)addr; 1738 int len = UGETW(ur->ucr_request.wLength); 1739 struct iovec iov; 1740 struct uio uio; 1741 void *ptr = 0; 1742 usbd_status xerr; 1743 1744 error = 0; 1745 1746 if (!(flag & FWRITE)) 1747 return EPERM; 1748 /* Avoid requests that would damage the bus integrity. */ 1749 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1750 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1751 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1752 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1753 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1754 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1755 return EINVAL; 1756 1757 if (len < 0 || len > 32767) 1758 return EINVAL; 1759 if (len != 0) { 1760 iov.iov_base = (void *)ur->ucr_data; 1761 iov.iov_len = len; 1762 uio.uio_iov = &iov; 1763 uio.uio_iovcnt = 1; 1764 uio.uio_resid = len; 1765 uio.uio_offset = 0; 1766 uio.uio_rw = 1767 ur->ucr_request.bmRequestType & UT_READ ? 1768 UIO_READ : UIO_WRITE; 1769 uio.uio_vmspace = l->l_proc->p_vmspace; 1770 ptr = kmem_alloc(len, KM_SLEEP); 1771 if (uio.uio_rw == UIO_WRITE) { 1772 error = uiomove(ptr, len, &uio); 1773 if (error) 1774 goto ret; 1775 } 1776 } 1777 sce = &sc->sc_endpoints[endpt][IN]; 1778 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1779 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1780 if (xerr) { 1781 error = EIO; 1782 goto ret; 1783 } 1784 if (len != 0) { 1785 if (uio.uio_rw == UIO_READ) { 1786 size_t alen = min(len, ur->ucr_actlen); 1787 error = uiomove(ptr, alen, &uio); 1788 if (error) 1789 goto ret; 1790 } 1791 } 1792 ret: 1793 if (ptr) 1794 kmem_free(ptr, len); 1795 return error; 1796 } 1797 case USB_GET_DEVICEINFO: 1798 usbd_fill_deviceinfo(sc->sc_udev, 1799 (struct usb_device_info *)addr, 0); 1800 break; 1801 #ifdef COMPAT_30 1802 case USB_GET_DEVICEINFO_OLD: 1803 usbd_fill_deviceinfo_old(sc->sc_udev, 1804 (struct usb_device_info_old *)addr, 0); 1805 1806 break; 1807 #endif 1808 default: 1809 return EINVAL; 1810 } 1811 return 0; 1812 } 1813 1814 int 1815 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1816 { 1817 int endpt = UGENENDPOINT(dev); 1818 struct ugen_softc *sc; 1819 int error; 1820 1821 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1822 if (sc == NULL || sc->sc_dying) 1823 return ENXIO; 1824 1825 sc->sc_refcnt++; 1826 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1827 if (--sc->sc_refcnt < 0) 1828 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1829 return error; 1830 } 1831 1832 int 1833 ugenpoll(dev_t dev, int events, struct lwp *l) 1834 { 1835 struct ugen_softc *sc; 1836 struct ugen_endpoint *sce_in, *sce_out; 1837 int revents = 0; 1838 1839 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1840 if (sc == NULL) 1841 return ENXIO; 1842 1843 if (sc->sc_dying) 1844 return POLLHUP; 1845 1846 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1847 return ENODEV; 1848 1849 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1850 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1851 if (sce_in == NULL && sce_out == NULL) 1852 return POLLERR; 1853 #ifdef DIAGNOSTIC 1854 if (!sce_in->edesc && !sce_out->edesc) { 1855 printf("ugenpoll: no edesc\n"); 1856 return POLLERR; 1857 } 1858 /* It's possible to have only one pipe open. */ 1859 if (!sce_in->pipeh && !sce_out->pipeh) { 1860 printf("ugenpoll: no pipe\n"); 1861 return POLLERR; 1862 } 1863 #endif 1864 1865 mutex_enter(&sc->sc_lock); 1866 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1867 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1868 case UE_INTERRUPT: 1869 if (sce_in->q.c_cc > 0) 1870 revents |= events & (POLLIN | POLLRDNORM); 1871 else 1872 selrecord(l, &sce_in->rsel); 1873 break; 1874 case UE_ISOCHRONOUS: 1875 if (sce_in->cur != sce_in->fill) 1876 revents |= events & (POLLIN | POLLRDNORM); 1877 else 1878 selrecord(l, &sce_in->rsel); 1879 break; 1880 case UE_BULK: 1881 if (sce_in->state & UGEN_BULK_RA) { 1882 if (sce_in->ra_wb_used > 0) 1883 revents |= events & 1884 (POLLIN | POLLRDNORM); 1885 else 1886 selrecord(l, &sce_in->rsel); 1887 break; 1888 } 1889 /* 1890 * We have no easy way of determining if a read will 1891 * yield any data or a write will happen. 1892 * Pretend they will. 1893 */ 1894 revents |= events & (POLLIN | POLLRDNORM); 1895 break; 1896 default: 1897 break; 1898 } 1899 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1900 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1901 case UE_INTERRUPT: 1902 case UE_ISOCHRONOUS: 1903 /* XXX unimplemented */ 1904 break; 1905 case UE_BULK: 1906 if (sce_out->state & UGEN_BULK_WB) { 1907 if (sce_out->ra_wb_used < 1908 sce_out->limit - sce_out->ibuf) 1909 revents |= events & 1910 (POLLOUT | POLLWRNORM); 1911 else 1912 selrecord(l, &sce_out->rsel); 1913 break; 1914 } 1915 /* 1916 * We have no easy way of determining if a read will 1917 * yield any data or a write will happen. 1918 * Pretend they will. 1919 */ 1920 revents |= events & (POLLOUT | POLLWRNORM); 1921 break; 1922 default: 1923 break; 1924 } 1925 1926 mutex_exit(&sc->sc_lock); 1927 1928 return revents; 1929 } 1930 1931 static void 1932 filt_ugenrdetach(struct knote *kn) 1933 { 1934 struct ugen_endpoint *sce = kn->kn_hook; 1935 struct ugen_softc *sc = sce->sc; 1936 1937 mutex_enter(&sc->sc_lock); 1938 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1939 mutex_exit(&sc->sc_lock); 1940 } 1941 1942 static int 1943 filt_ugenread_intr(struct knote *kn, long hint) 1944 { 1945 struct ugen_endpoint *sce = kn->kn_hook; 1946 struct ugen_softc *sc = sce->sc; 1947 1948 if (sc->sc_dying) 1949 return 0; 1950 1951 kn->kn_data = sce->q.c_cc; 1952 return kn->kn_data > 0; 1953 } 1954 1955 static int 1956 filt_ugenread_isoc(struct knote *kn, long hint) 1957 { 1958 struct ugen_endpoint *sce = kn->kn_hook; 1959 struct ugen_softc *sc = sce->sc; 1960 1961 if (sc->sc_dying) 1962 return 0; 1963 1964 if (sce->cur == sce->fill) 1965 return 0; 1966 1967 if (sce->cur < sce->fill) 1968 kn->kn_data = sce->fill - sce->cur; 1969 else 1970 kn->kn_data = (sce->limit - sce->cur) + 1971 (sce->fill - sce->ibuf); 1972 1973 return 1; 1974 } 1975 1976 static int 1977 filt_ugenread_bulk(struct knote *kn, long hint) 1978 { 1979 struct ugen_endpoint *sce = kn->kn_hook; 1980 struct ugen_softc *sc = sce->sc; 1981 1982 if (sc->sc_dying) 1983 return 0; 1984 1985 if (!(sce->state & UGEN_BULK_RA)) 1986 /* 1987 * We have no easy way of determining if a read will 1988 * yield any data or a write will happen. 1989 * So, emulate "seltrue". 1990 */ 1991 return filt_seltrue(kn, hint); 1992 1993 if (sce->ra_wb_used == 0) 1994 return 0; 1995 1996 kn->kn_data = sce->ra_wb_used; 1997 1998 return 1; 1999 } 2000 2001 static int 2002 filt_ugenwrite_bulk(struct knote *kn, long hint) 2003 { 2004 struct ugen_endpoint *sce = kn->kn_hook; 2005 struct ugen_softc *sc = sce->sc; 2006 2007 if (sc->sc_dying) 2008 return 0; 2009 2010 if (!(sce->state & UGEN_BULK_WB)) 2011 /* 2012 * We have no easy way of determining if a read will 2013 * yield any data or a write will happen. 2014 * So, emulate "seltrue". 2015 */ 2016 return filt_seltrue(kn, hint); 2017 2018 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2019 return 0; 2020 2021 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2022 2023 return 1; 2024 } 2025 2026 static const struct filterops ugenread_intr_filtops = { 2027 .f_isfd = 1, 2028 .f_attach = NULL, 2029 .f_detach = filt_ugenrdetach, 2030 .f_event = filt_ugenread_intr, 2031 }; 2032 2033 static const struct filterops ugenread_isoc_filtops = { 2034 .f_isfd = 1, 2035 .f_attach = NULL, 2036 .f_detach = filt_ugenrdetach, 2037 .f_event = filt_ugenread_isoc, 2038 }; 2039 2040 static const struct filterops ugenread_bulk_filtops = { 2041 .f_isfd = 1, 2042 .f_attach = NULL, 2043 .f_detach = filt_ugenrdetach, 2044 .f_event = filt_ugenread_bulk, 2045 }; 2046 2047 static const struct filterops ugenwrite_bulk_filtops = { 2048 .f_isfd = 1, 2049 .f_attach = NULL, 2050 .f_detach = filt_ugenrdetach, 2051 .f_event = filt_ugenwrite_bulk, 2052 }; 2053 2054 int 2055 ugenkqfilter(dev_t dev, struct knote *kn) 2056 { 2057 struct ugen_softc *sc; 2058 struct ugen_endpoint *sce; 2059 struct klist *klist; 2060 2061 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2062 if (sc == NULL || sc->sc_dying) 2063 return ENXIO; 2064 2065 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2066 return ENODEV; 2067 2068 switch (kn->kn_filter) { 2069 case EVFILT_READ: 2070 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2071 if (sce == NULL) 2072 return EINVAL; 2073 2074 klist = &sce->rsel.sel_klist; 2075 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2076 case UE_INTERRUPT: 2077 kn->kn_fop = &ugenread_intr_filtops; 2078 break; 2079 case UE_ISOCHRONOUS: 2080 kn->kn_fop = &ugenread_isoc_filtops; 2081 break; 2082 case UE_BULK: 2083 kn->kn_fop = &ugenread_bulk_filtops; 2084 break; 2085 default: 2086 return EINVAL; 2087 } 2088 break; 2089 2090 case EVFILT_WRITE: 2091 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2092 if (sce == NULL) 2093 return EINVAL; 2094 2095 klist = &sce->rsel.sel_klist; 2096 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2097 case UE_INTERRUPT: 2098 case UE_ISOCHRONOUS: 2099 /* XXX poll doesn't support this */ 2100 return EINVAL; 2101 2102 case UE_BULK: 2103 kn->kn_fop = &ugenwrite_bulk_filtops; 2104 break; 2105 default: 2106 return EINVAL; 2107 } 2108 break; 2109 2110 default: 2111 return EINVAL; 2112 } 2113 2114 kn->kn_hook = sce; 2115 2116 mutex_enter(&sc->sc_lock); 2117 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2118 mutex_exit(&sc->sc_lock); 2119 2120 return 0; 2121 } 2122
Indexes created Fri Sep 26 20:09:58 GMT 2025