ugen.c revision 1.126.2.10
1 /* $NetBSD: ugen.c,v 1.126.2.10 2015/06/23 12:03:29 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 1.126.2.10 2015/06/23 12:03:29 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 void *tbuf; 359 int i, j; 360 361 sc = device_lookup_private(&ugen_cd, unit); 362 if (sc == NULL) 363 return ENXIO; 364 365 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 366 flag, mode, unit, endpt)); 367 368 if (sc == NULL || sc->sc_dying) 369 return ENXIO; 370 371 /* The control endpoint allows multiple opens. */ 372 if (endpt == USB_CONTROL_ENDPOINT) { 373 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 374 return 0; 375 } 376 377 if (sc->sc_is_open[endpt]) 378 return EBUSY; 379 380 /* Make sure there are pipes for all directions. */ 381 for (dir = OUT; dir <= IN; dir++) { 382 if (flag & (dir == OUT ? FWRITE : FREAD)) { 383 sce = &sc->sc_endpoints[endpt][dir]; 384 if (sce == 0 || sce->edesc == 0) 385 return ENXIO; 386 } 387 } 388 389 /* Actually open the pipes. */ 390 /* XXX Should back out properly if it fails. */ 391 for (dir = OUT; dir <= IN; dir++) { 392 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 393 continue; 394 sce = &sc->sc_endpoints[endpt][dir]; 395 sce->state = 0; 396 sce->timeout = USBD_NO_TIMEOUT; 397 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 398 sc, endpt, dir, sce)); 399 edesc = sce->edesc; 400 switch (edesc->bmAttributes & UE_XFERTYPE) { 401 case UE_INTERRUPT: 402 if (dir == OUT) { 403 err = usbd_open_pipe(sce->iface, 404 edesc->bEndpointAddress, 0, &sce->pipeh); 405 if (err) 406 return EIO; 407 break; 408 } 409 isize = UGETW(edesc->wMaxPacketSize); 410 if (isize == 0) /* shouldn't happen */ 411 return EINVAL; 412 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 413 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 414 endpt, isize)); 415 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 416 kmem_free(sce->ibuf, isize); 417 sce->ibuf = NULL; 418 return ENOMEM; 419 } 420 err = usbd_open_pipe_intr(sce->iface, 421 edesc->bEndpointAddress, 422 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 423 sce->ibuf, isize, ugenintr, 424 USBD_DEFAULT_INTERVAL); 425 if (err) { 426 clfree(&sce->q); 427 kmem_free(sce->ibuf, isize); 428 sce->ibuf = NULL; 429 return EIO; 430 } 431 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 432 break; 433 case UE_BULK: 434 err = usbd_open_pipe(sce->iface, 435 edesc->bEndpointAddress, 0, &sce->pipeh); 436 if (err) 437 return EIO; 438 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 439 /* 440 * Use request size for non-RA/WB transfers 441 * as the default. 442 */ 443 sce->ra_wb_reqsize = UGEN_BBSIZE; 444 break; 445 case UE_ISOCHRONOUS: 446 if (dir == OUT) 447 return EINVAL; 448 isize = UGETW(edesc->wMaxPacketSize); 449 if (isize == 0) /* shouldn't happen */ 450 return EINVAL; 451 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 452 KM_SLEEP); 453 sce->cur = sce->fill = sce->ibuf; 454 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 455 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 456 endpt, isize)); 457 err = usbd_open_pipe(sce->iface, 458 edesc->bEndpointAddress, 0, &sce->pipeh); 459 if (err) { 460 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 461 sce->ibuf = NULL; 462 return EIO; 463 } 464 for (i = 0; i < UGEN_NISOREQS; ++i) { 465 sce->isoreqs[i].sce = sce; 466 xfer = usbd_alloc_xfer(sc->sc_udev); 467 if (xfer == NULL) 468 goto bad; 469 sce->isoreqs[i].xfer = xfer; 470 tbuf = usbd_alloc_buffer 471 (xfer, isize * UGEN_NISORFRMS); 472 if (tbuf == NULL) { 473 i++; 474 goto bad; 475 } 476 sce->isoreqs[i].dmabuf = tbuf; 477 for (j = 0; j < UGEN_NISORFRMS; ++j) 478 sce->isoreqs[i].sizes[j] = isize; 479 usbd_setup_isoc_xfer 480 (xfer, sce->pipeh, &sce->isoreqs[i], 481 sce->isoreqs[i].sizes, 482 UGEN_NISORFRMS, 0, 483 ugen_isoc_rintr); 484 (void)usbd_transfer(xfer); 485 } 486 DPRINTFN(5, ("ugenopen: isoc open done\n")); 487 break; 488 bad: 489 while (--i >= 0) /* implicit buffer free */ 490 usbd_free_xfer(sce->isoreqs[i].xfer); 491 usbd_close_pipe(sce->pipeh); 492 sce->pipeh = NULL; 493 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 494 sce->ibuf = NULL; 495 return ENOMEM; 496 case UE_CONTROL: 497 sce->timeout = USBD_DEFAULT_TIMEOUT; 498 return EINVAL; 499 } 500 } 501 sc->sc_is_open[endpt] = 1; 502 return 0; 503 } 504 505 int 506 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 507 { 508 int endpt = UGENENDPOINT(dev); 509 struct ugen_softc *sc; 510 struct ugen_endpoint *sce; 511 int dir; 512 int i; 513 514 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 515 if (sc == NULL) 516 return ENXIO; 517 518 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 519 flag, mode, UGENUNIT(dev), endpt)); 520 521 #ifdef DIAGNOSTIC 522 if (!sc->sc_is_open[endpt]) { 523 printf("ugenclose: not open\n"); 524 return EINVAL; 525 } 526 #endif 527 528 if (endpt == USB_CONTROL_ENDPOINT) { 529 DPRINTFN(5, ("ugenclose: close control\n")); 530 sc->sc_is_open[endpt] = 0; 531 return 0; 532 } 533 534 for (dir = OUT; dir <= IN; dir++) { 535 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 536 continue; 537 sce = &sc->sc_endpoints[endpt][dir]; 538 if (sce == NULL || sce->pipeh == NULL) 539 continue; 540 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 541 endpt, dir, sce)); 542 543 usbd_abort_pipe(sce->pipeh); 544 usbd_close_pipe(sce->pipeh); 545 sce->pipeh = NULL; 546 547 int isize = UGETW(sce->edesc->wMaxPacketSize); 548 int msize = 0; 549 550 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 551 case UE_INTERRUPT: 552 ndflush(&sce->q, sce->q.c_cc); 553 clfree(&sce->q); 554 msize = isize; 555 break; 556 case UE_ISOCHRONOUS: 557 for (i = 0; i < UGEN_NISOREQS; ++i) 558 usbd_free_xfer(sce->isoreqs[i].xfer); 559 msize = isize * UGEN_NISOFRAMES; 560 break; 561 case UE_BULK: 562 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 563 usbd_free_xfer(sce->ra_wb_xfer); 564 msize = sce->ra_wb_bufsize; 565 } 566 break; 567 default: 568 break; 569 } 570 if (sce->ibuf != NULL) { 571 kmem_free(sce->ibuf, msize); 572 sce->ibuf = NULL; 573 } 574 } 575 sc->sc_is_open[endpt] = 0; 576 577 return 0; 578 } 579 580 Static int 581 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 582 { 583 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 584 uint32_t n, tn; 585 struct usbd_xfer *xfer; 586 usbd_status err; 587 int error = 0; 588 589 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 590 591 if (sc->sc_dying) 592 return EIO; 593 594 if (endpt == USB_CONTROL_ENDPOINT) 595 return ENODEV; 596 597 #ifdef DIAGNOSTIC 598 if (sce->edesc == NULL) { 599 printf("ugenread: no edesc\n"); 600 return EIO; 601 } 602 if (sce->pipeh == NULL) { 603 printf("ugenread: no pipe\n"); 604 return EIO; 605 } 606 #endif 607 608 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 609 case UE_INTERRUPT: 610 /* Block until activity occurred. */ 611 mutex_enter(&sc->sc_lock); 612 while (sce->q.c_cc == 0) { 613 if (flag & IO_NDELAY) { 614 mutex_exit(&sc->sc_lock); 615 return EWOULDBLOCK; 616 } 617 sce->state |= UGEN_ASLP; 618 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 619 /* "ugenri" */ 620 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 621 mstohz(sce->timeout)); 622 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 623 if (sc->sc_dying) 624 error = EIO; 625 if (error) { 626 sce->state &= ~UGEN_ASLP; 627 break; 628 } 629 } 630 mutex_exit(&sc->sc_lock); 631 632 /* Transfer as many chunks as possible. */ 633 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 634 n = min(sce->q.c_cc, uio->uio_resid); 635 if (n > sizeof(sc->sc_buffer)) 636 n = sizeof(sc->sc_buffer); 637 638 /* Remove a small chunk from the input queue. */ 639 q_to_b(&sce->q, sc->sc_buffer, n); 640 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 641 642 /* Copy the data to the user process. */ 643 error = uiomove(sc->sc_buffer, n, uio); 644 if (error) 645 break; 646 } 647 break; 648 case UE_BULK: 649 if (sce->state & UGEN_BULK_RA) { 650 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 651 uio->uio_resid, sce->ra_wb_used)); 652 xfer = sce->ra_wb_xfer; 653 654 mutex_enter(&sc->sc_lock); 655 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 656 mutex_exit(&sc->sc_lock); 657 return EWOULDBLOCK; 658 } 659 while (uio->uio_resid > 0 && !error) { 660 while (sce->ra_wb_used == 0) { 661 sce->state |= UGEN_ASLP; 662 DPRINTFN(5, 663 ("ugenread: sleep on %p\n", 664 sce)); 665 /* "ugenrb" */ 666 error = cv_timedwait_sig(&sce->cv, 667 &sc->sc_lock, mstohz(sce->timeout)); 668 DPRINTFN(5, 669 ("ugenread: woke, error=%d\n", 670 error)); 671 if (sc->sc_dying) 672 error = EIO; 673 if (error) { 674 sce->state &= ~UGEN_ASLP; 675 break; 676 } 677 } 678 679 /* Copy data to the process. */ 680 while (uio->uio_resid > 0 681 && sce->ra_wb_used > 0) { 682 n = min(uio->uio_resid, 683 sce->ra_wb_used); 684 n = min(n, sce->limit - sce->cur); 685 error = uiomove(sce->cur, n, uio); 686 if (error) 687 break; 688 sce->cur += n; 689 sce->ra_wb_used -= n; 690 if (sce->cur == sce->limit) 691 sce->cur = sce->ibuf; 692 } 693 694 /* 695 * If the transfers stopped because the 696 * buffer was full, restart them. 697 */ 698 if (sce->state & UGEN_RA_WB_STOP && 699 sce->ra_wb_used < sce->limit - sce->ibuf) { 700 n = (sce->limit - sce->ibuf) 701 - sce->ra_wb_used; 702 usbd_setup_xfer(xfer, 703 sce->pipeh, sce, NULL, 704 min(n, sce->ra_wb_xferlen), 705 0, USBD_NO_TIMEOUT, 706 ugen_bulkra_intr); 707 sce->state &= ~UGEN_RA_WB_STOP; 708 err = usbd_transfer(xfer); 709 if (err != USBD_IN_PROGRESS) 710 /* 711 * The transfer has not been 712 * queued. Setting STOP 713 * will make us try 714 * again at the next read. 715 */ 716 sce->state |= UGEN_RA_WB_STOP; 717 } 718 } 719 mutex_exit(&sc->sc_lock); 720 break; 721 } 722 xfer = usbd_alloc_xfer(sc->sc_udev); 723 if (xfer == NULL) 724 return ENOMEM; 725 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 726 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 727 tn = n; 728 err = usbd_bulk_transfer( 729 xfer, sce->pipeh, 730 sce->state & UGEN_SHORT_OK ? 731 USBD_SHORT_XFER_OK : 0, 732 sce->timeout, sc->sc_buffer, &tn); 733 if (err) { 734 if (err == USBD_INTERRUPTED) 735 error = EINTR; 736 else if (err == USBD_TIMEOUT) 737 error = ETIMEDOUT; 738 else 739 error = EIO; 740 break; 741 } 742 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 743 error = uiomove(sc->sc_buffer, tn, uio); 744 if (error || tn < n) 745 break; 746 } 747 usbd_free_xfer(xfer); 748 break; 749 case UE_ISOCHRONOUS: 750 mutex_enter(&sc->sc_lock); 751 while (sce->cur == sce->fill) { 752 if (flag & IO_NDELAY) { 753 mutex_exit(&sc->sc_lock); 754 return EWOULDBLOCK; 755 } 756 sce->state |= UGEN_ASLP; 757 /* "ugenri" */ 758 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 759 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 760 mstohz(sce->timeout)); 761 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 762 if (sc->sc_dying) 763 error = EIO; 764 if (error) { 765 sce->state &= ~UGEN_ASLP; 766 break; 767 } 768 } 769 770 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 771 if(sce->fill > sce->cur) 772 n = min(sce->fill - sce->cur, uio->uio_resid); 773 else 774 n = min(sce->limit - sce->cur, uio->uio_resid); 775 776 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 777 778 /* Copy the data to the user process. */ 779 error = uiomove(sce->cur, n, uio); 780 if (error) 781 break; 782 sce->cur += n; 783 if (sce->cur >= sce->limit) 784 sce->cur = sce->ibuf; 785 } 786 mutex_exit(&sc->sc_lock); 787 break; 788 789 790 default: 791 return ENXIO; 792 } 793 return error; 794 } 795 796 int 797 ugenread(dev_t dev, struct uio *uio, int flag) 798 { 799 int endpt = UGENENDPOINT(dev); 800 struct ugen_softc *sc; 801 int error; 802 803 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 804 if (sc == NULL) 805 return ENXIO; 806 807 mutex_enter(&sc->sc_lock); 808 sc->sc_refcnt++; 809 mutex_exit(&sc->sc_lock); 810 811 error = ugen_do_read(sc, endpt, uio, flag); 812 813 mutex_enter(&sc->sc_lock); 814 if (--sc->sc_refcnt < 0) 815 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 816 mutex_exit(&sc->sc_lock); 817 818 return error; 819 } 820 821 Static int 822 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 823 int flag) 824 { 825 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 826 uint32_t n; 827 int error = 0; 828 uint32_t tn; 829 char *dbuf; 830 struct usbd_xfer *xfer; 831 usbd_status err; 832 833 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 834 835 if (sc->sc_dying) 836 return EIO; 837 838 if (endpt == USB_CONTROL_ENDPOINT) 839 return ENODEV; 840 841 #ifdef DIAGNOSTIC 842 if (sce->edesc == NULL) { 843 printf("ugenwrite: no edesc\n"); 844 return EIO; 845 } 846 if (sce->pipeh == NULL) { 847 printf("ugenwrite: no pipe\n"); 848 return EIO; 849 } 850 #endif 851 852 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 853 case UE_BULK: 854 if (sce->state & UGEN_BULK_WB) { 855 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 856 uio->uio_resid, sce->ra_wb_used)); 857 xfer = sce->ra_wb_xfer; 858 859 mutex_enter(&sc->sc_lock); 860 if (sce->ra_wb_used == sce->limit - sce->ibuf && 861 flag & IO_NDELAY) { 862 mutex_exit(&sc->sc_lock); 863 return EWOULDBLOCK; 864 } 865 while (uio->uio_resid > 0 && !error) { 866 while (sce->ra_wb_used == 867 sce->limit - sce->ibuf) { 868 sce->state |= UGEN_ASLP; 869 DPRINTFN(5, 870 ("ugenwrite: sleep on %p\n", 871 sce)); 872 /* "ugenwb" */ 873 error = cv_timedwait_sig(&sce->cv, 874 &sc->sc_lock, mstohz(sce->timeout)); 875 DPRINTFN(5, 876 ("ugenwrite: woke, error=%d\n", 877 error)); 878 if (sc->sc_dying) 879 error = EIO; 880 if (error) { 881 sce->state &= ~UGEN_ASLP; 882 break; 883 } 884 } 885 886 /* Copy data from the process. */ 887 while (uio->uio_resid > 0 && 888 sce->ra_wb_used < sce->limit - sce->ibuf) { 889 n = min(uio->uio_resid, 890 (sce->limit - sce->ibuf) 891 - sce->ra_wb_used); 892 n = min(n, sce->limit - sce->fill); 893 error = uiomove(sce->fill, n, uio); 894 if (error) 895 break; 896 sce->fill += n; 897 sce->ra_wb_used += n; 898 if (sce->fill == sce->limit) 899 sce->fill = sce->ibuf; 900 } 901 902 /* 903 * If the transfers stopped because the 904 * buffer was empty, restart them. 905 */ 906 if (sce->state & UGEN_RA_WB_STOP && 907 sce->ra_wb_used > 0) { 908 dbuf = (char *)usbd_get_buffer(xfer); 909 n = min(sce->ra_wb_used, 910 sce->ra_wb_xferlen); 911 tn = min(n, sce->limit - sce->cur); 912 memcpy(dbuf, sce->cur, tn); 913 dbuf += tn; 914 if (n - tn > 0) 915 memcpy(dbuf, sce->ibuf, 916 n - tn); 917 usbd_setup_xfer(xfer, 918 sce->pipeh, sce, NULL, n, 919 0, USBD_NO_TIMEOUT, 920 ugen_bulkwb_intr); 921 sce->state &= ~UGEN_RA_WB_STOP; 922 err = usbd_transfer(xfer); 923 if (err != USBD_IN_PROGRESS) 924 /* 925 * The transfer has not been 926 * queued. Setting STOP 927 * will make us try again 928 * at the next read. 929 */ 930 sce->state |= UGEN_RA_WB_STOP; 931 } 932 } 933 mutex_exit(&sc->sc_lock); 934 break; 935 } 936 xfer = usbd_alloc_xfer(sc->sc_udev); 937 if (xfer == NULL) 938 return EIO; 939 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 940 error = uiomove(sc->sc_buffer, n, uio); 941 if (error) 942 break; 943 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 944 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 945 sce->timeout, sc->sc_buffer, &n); 946 if (err) { 947 if (err == USBD_INTERRUPTED) 948 error = EINTR; 949 else if (err == USBD_TIMEOUT) 950 error = ETIMEDOUT; 951 else 952 error = EIO; 953 break; 954 } 955 } 956 usbd_free_xfer(xfer); 957 break; 958 case UE_INTERRUPT: 959 xfer = usbd_alloc_xfer(sc->sc_udev); 960 if (xfer == NULL) 961 return EIO; 962 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 963 uio->uio_resid)) != 0) { 964 error = uiomove(sc->sc_buffer, n, uio); 965 if (error) 966 break; 967 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 968 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 969 sce->timeout, sc->sc_buffer, &n); 970 if (err) { 971 if (err == USBD_INTERRUPTED) 972 error = EINTR; 973 else if (err == USBD_TIMEOUT) 974 error = ETIMEDOUT; 975 else 976 error = EIO; 977 break; 978 } 979 } 980 usbd_free_xfer(xfer); 981 break; 982 default: 983 return ENXIO; 984 } 985 return error; 986 } 987 988 int 989 ugenwrite(dev_t dev, struct uio *uio, int flag) 990 { 991 int endpt = UGENENDPOINT(dev); 992 struct ugen_softc *sc; 993 int error; 994 995 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 996 if (sc == NULL) 997 return ENXIO; 998 999 mutex_enter(&sc->sc_lock); 1000 sc->sc_refcnt++; 1001 mutex_exit(&sc->sc_lock); 1002 1003 error = ugen_do_write(sc, endpt, uio, flag); 1004 1005 mutex_enter(&sc->sc_lock); 1006 if (--sc->sc_refcnt < 0) 1007 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1008 mutex_exit(&sc->sc_lock); 1009 1010 return error; 1011 } 1012 1013 int 1014 ugen_activate(device_t self, enum devact act) 1015 { 1016 struct ugen_softc *sc = device_private(self); 1017 1018 switch (act) { 1019 case DVACT_DEACTIVATE: 1020 sc->sc_dying = 1; 1021 return 0; 1022 default: 1023 return EOPNOTSUPP; 1024 } 1025 } 1026 1027 int 1028 ugen_detach(device_t self, int flags) 1029 { 1030 struct ugen_softc *sc = device_private(self); 1031 struct ugen_endpoint *sce; 1032 int i, dir; 1033 int maj, mn; 1034 1035 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1036 1037 sc->sc_dying = 1; 1038 pmf_device_deregister(self); 1039 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1040 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1041 for (dir = OUT; dir <= IN; dir++) { 1042 sce = &sc->sc_endpoints[i][dir]; 1043 if (sce && sce->pipeh) 1044 usbd_abort_pipe(sce->pipeh); 1045 } 1046 } 1047 1048 mutex_enter(&sc->sc_lock); 1049 if (--sc->sc_refcnt >= 0) { 1050 /* Wake everyone */ 1051 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1052 cv_signal(&sc->sc_endpoints[i][IN].cv); 1053 /* Wait for processes to go away. */ 1054 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1055 } 1056 mutex_exit(&sc->sc_lock); 1057 1058 /* locate the major number */ 1059 maj = cdevsw_lookup_major(&ugen_cdevsw); 1060 1061 /* Nuke the vnodes for any open instances (calls close). */ 1062 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1063 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1064 1065 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1066 sc->sc_dev); 1067 1068 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1069 for (dir = OUT; dir <= IN; dir++) { 1070 sce = &sc->sc_endpoints[i][dir]; 1071 seldestroy(&sce->rsel); 1072 cv_destroy(&sce->cv); 1073 } 1074 } 1075 1076 cv_destroy(&sc->sc_detach_cv); 1077 mutex_destroy(&sc->sc_lock); 1078 1079 return 0; 1080 } 1081 1082 Static void 1083 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1084 { 1085 struct ugen_endpoint *sce = addr; 1086 struct ugen_softc *sc = sce->sc; 1087 uint32_t count; 1088 u_char *ibuf; 1089 1090 if (status == USBD_CANCELLED) 1091 return; 1092 1093 if (status != USBD_NORMAL_COMPLETION) { 1094 DPRINTF(("ugenintr: status=%d\n", status)); 1095 if (status == USBD_STALLED) 1096 usbd_clear_endpoint_stall_async(sce->pipeh); 1097 return; 1098 } 1099 1100 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1101 ibuf = sce->ibuf; 1102 1103 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1104 xfer, status, count)); 1105 DPRINTFN(5, (" data = %02x %02x %02x\n", 1106 ibuf[0], ibuf[1], ibuf[2])); 1107 1108 (void)b_to_q(ibuf, count, &sce->q); 1109 1110 mutex_enter(&sc->sc_lock); 1111 if (sce->state & UGEN_ASLP) { 1112 sce->state &= ~UGEN_ASLP; 1113 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1114 cv_signal(&sce->cv); 1115 } 1116 mutex_exit(&sc->sc_lock); 1117 selnotify(&sce->rsel, 0, 0); 1118 } 1119 1120 Static void 1121 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1122 usbd_status status) 1123 { 1124 struct isoreq *req = addr; 1125 struct ugen_endpoint *sce = req->sce; 1126 struct ugen_softc *sc = sce->sc; 1127 uint32_t count, n; 1128 int i, isize; 1129 1130 /* Return if we are aborting. */ 1131 if (status == USBD_CANCELLED) 1132 return; 1133 1134 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1135 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1136 (long)(req - sce->isoreqs), count)); 1137 1138 /* throw away oldest input if the buffer is full */ 1139 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1140 sce->cur += count; 1141 if(sce->cur >= sce->limit) 1142 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1143 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1144 count)); 1145 } 1146 1147 isize = UGETW(sce->edesc->wMaxPacketSize); 1148 for (i = 0; i < UGEN_NISORFRMS; i++) { 1149 uint32_t actlen = req->sizes[i]; 1150 char const *tbuf = (char const *)req->dmabuf + isize * i; 1151 1152 /* copy data to buffer */ 1153 while (actlen > 0) { 1154 n = min(actlen, sce->limit - sce->fill); 1155 memcpy(sce->fill, tbuf, n); 1156 1157 tbuf += n; 1158 actlen -= n; 1159 sce->fill += n; 1160 if(sce->fill == sce->limit) 1161 sce->fill = sce->ibuf; 1162 } 1163 1164 /* setup size for next transfer */ 1165 req->sizes[i] = isize; 1166 } 1167 1168 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1169 0, ugen_isoc_rintr); 1170 (void)usbd_transfer(xfer); 1171 1172 mutex_enter(&sc->sc_lock); 1173 if (sce->state & UGEN_ASLP) { 1174 sce->state &= ~UGEN_ASLP; 1175 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1176 cv_signal(&sce->cv); 1177 } 1178 mutex_exit(&sc->sc_lock); 1179 selnotify(&sce->rsel, 0, 0); 1180 } 1181 1182 Static void 1183 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1184 usbd_status status) 1185 { 1186 struct ugen_endpoint *sce = addr; 1187 struct ugen_softc *sc = sce->sc; 1188 uint32_t count, n; 1189 char const *tbuf; 1190 usbd_status err; 1191 1192 /* Return if we are aborting. */ 1193 if (status == USBD_CANCELLED) 1194 return; 1195 1196 if (status != USBD_NORMAL_COMPLETION) { 1197 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1198 sce->state |= UGEN_RA_WB_STOP; 1199 if (status == USBD_STALLED) 1200 usbd_clear_endpoint_stall_async(sce->pipeh); 1201 return; 1202 } 1203 1204 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1205 1206 /* Keep track of how much is in the buffer. */ 1207 sce->ra_wb_used += count; 1208 1209 /* Copy data to buffer. */ 1210 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1211 n = min(count, sce->limit - sce->fill); 1212 memcpy(sce->fill, tbuf, n); 1213 tbuf += n; 1214 count -= n; 1215 sce->fill += n; 1216 if (sce->fill == sce->limit) 1217 sce->fill = sce->ibuf; 1218 if (count > 0) { 1219 memcpy(sce->fill, tbuf, count); 1220 sce->fill += count; 1221 } 1222 1223 /* Set up the next request if necessary. */ 1224 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1225 if (n > 0) { 1226 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1227 min(n, sce->ra_wb_xferlen), 0, 1228 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1229 err = usbd_transfer(xfer); 1230 if (err != USBD_IN_PROGRESS) { 1231 printf("usbd_bulkra_intr: error=%d\n", err); 1232 /* 1233 * The transfer has not been queued. Setting STOP 1234 * will make us try again at the next read. 1235 */ 1236 sce->state |= UGEN_RA_WB_STOP; 1237 } 1238 } 1239 else 1240 sce->state |= UGEN_RA_WB_STOP; 1241 1242 mutex_enter(&sc->sc_lock); 1243 if (sce->state & UGEN_ASLP) { 1244 sce->state &= ~UGEN_ASLP; 1245 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1246 cv_signal(&sce->cv); 1247 } 1248 mutex_exit(&sc->sc_lock); 1249 selnotify(&sce->rsel, 0, 0); 1250 } 1251 1252 Static void 1253 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1254 usbd_status status) 1255 { 1256 struct ugen_endpoint *sce = addr; 1257 struct ugen_softc *sc = sce->sc; 1258 uint32_t count, n; 1259 char *tbuf; 1260 usbd_status err; 1261 1262 /* Return if we are aborting. */ 1263 if (status == USBD_CANCELLED) 1264 return; 1265 1266 if (status != USBD_NORMAL_COMPLETION) { 1267 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1268 sce->state |= UGEN_RA_WB_STOP; 1269 if (status == USBD_STALLED) 1270 usbd_clear_endpoint_stall_async(sce->pipeh); 1271 return; 1272 } 1273 1274 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1275 1276 /* Keep track of how much is in the buffer. */ 1277 sce->ra_wb_used -= count; 1278 1279 /* Update buffer pointers. */ 1280 sce->cur += count; 1281 if (sce->cur >= sce->limit) 1282 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1283 1284 /* Set up next request if necessary. */ 1285 if (sce->ra_wb_used > 0) { 1286 /* copy data from buffer */ 1287 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1288 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1289 n = min(count, sce->limit - sce->cur); 1290 memcpy(tbuf, sce->cur, n); 1291 tbuf += n; 1292 if (count - n > 0) 1293 memcpy(tbuf, sce->ibuf, count - n); 1294 1295 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1296 count, 0, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1297 err = usbd_transfer(xfer); 1298 if (err != USBD_IN_PROGRESS) { 1299 printf("usbd_bulkwb_intr: error=%d\n", err); 1300 /* 1301 * The transfer has not been queued. Setting STOP 1302 * will make us try again at the next write. 1303 */ 1304 sce->state |= UGEN_RA_WB_STOP; 1305 } 1306 } 1307 else 1308 sce->state |= UGEN_RA_WB_STOP; 1309 1310 mutex_enter(&sc->sc_lock); 1311 if (sce->state & UGEN_ASLP) { 1312 sce->state &= ~UGEN_ASLP; 1313 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1314 cv_signal(&sce->cv); 1315 } 1316 mutex_exit(&sc->sc_lock); 1317 selnotify(&sce->rsel, 0, 0); 1318 } 1319 1320 Static usbd_status 1321 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1322 { 1323 struct usbd_interface *iface; 1324 usb_endpoint_descriptor_t *ed; 1325 usbd_status err; 1326 struct ugen_endpoint *sce; 1327 uint8_t niface, nendpt, endptno, endpt; 1328 int dir; 1329 1330 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1331 1332 err = usbd_interface_count(sc->sc_udev, &niface); 1333 if (err) 1334 return err; 1335 if (ifaceidx < 0 || ifaceidx >= niface) 1336 return USBD_INVAL; 1337 1338 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1339 if (err) 1340 return err; 1341 err = usbd_endpoint_count(iface, &nendpt); 1342 if (err) 1343 return err; 1344 /* XXX should only do this after setting new altno has succeeded */ 1345 for (endptno = 0; endptno < nendpt; endptno++) { 1346 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1347 endpt = ed->bEndpointAddress; 1348 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1349 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1350 sce->sc = 0; 1351 sce->edesc = 0; 1352 sce->iface = 0; 1353 } 1354 1355 /* change setting */ 1356 err = usbd_set_interface(iface, altno); 1357 if (err) 1358 return err; 1359 1360 err = usbd_endpoint_count(iface, &nendpt); 1361 if (err) 1362 return err; 1363 for (endptno = 0; endptno < nendpt; endptno++) { 1364 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1365 KASSERT(ed != NULL); 1366 endpt = ed->bEndpointAddress; 1367 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1368 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1369 sce->sc = sc; 1370 sce->edesc = ed; 1371 sce->iface = iface; 1372 } 1373 return 0; 1374 } 1375 1376 /* Retrieve a complete descriptor for a certain device and index. */ 1377 Static usb_config_descriptor_t * 1378 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1379 { 1380 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1381 int len; 1382 usbd_status err; 1383 1384 if (index == USB_CURRENT_CONFIG_INDEX) { 1385 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1386 len = UGETW(tdesc->wTotalLength); 1387 if (lenp) 1388 *lenp = len; 1389 cdesc = kmem_alloc(len, KM_SLEEP); 1390 memcpy(cdesc, tdesc, len); 1391 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1392 } else { 1393 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1394 if (err) 1395 return 0; 1396 len = UGETW(cdescr.wTotalLength); 1397 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1398 if (lenp) 1399 *lenp = len; 1400 cdesc = kmem_alloc(len, KM_SLEEP); 1401 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1402 if (err) { 1403 kmem_free(cdesc, len); 1404 return 0; 1405 } 1406 } 1407 return cdesc; 1408 } 1409 1410 Static int 1411 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1412 { 1413 struct usbd_interface *iface; 1414 usbd_status err; 1415 1416 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1417 if (err) 1418 return -1; 1419 return usbd_get_interface_altindex(iface); 1420 } 1421 1422 Static int 1423 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1424 void *addr, int flag, struct lwp *l) 1425 { 1426 struct ugen_endpoint *sce; 1427 usbd_status err; 1428 struct usbd_interface *iface; 1429 struct usb_config_desc *cd; 1430 usb_config_descriptor_t *cdesc; 1431 struct usb_interface_desc *id; 1432 usb_interface_descriptor_t *idesc; 1433 struct usb_endpoint_desc *ed; 1434 usb_endpoint_descriptor_t *edesc; 1435 struct usb_alt_interface *ai; 1436 struct usb_string_desc *si; 1437 uint8_t conf, alt; 1438 int cdesclen; 1439 1440 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1441 if (sc->sc_dying) 1442 return EIO; 1443 1444 switch (cmd) { 1445 case FIONBIO: 1446 /* All handled in the upper FS layer. */ 1447 return 0; 1448 case USB_SET_SHORT_XFER: 1449 if (endpt == USB_CONTROL_ENDPOINT) 1450 return EINVAL; 1451 /* This flag only affects read */ 1452 sce = &sc->sc_endpoints[endpt][IN]; 1453 if (sce == NULL || sce->pipeh == NULL) 1454 return EINVAL; 1455 if (*(int *)addr) 1456 sce->state |= UGEN_SHORT_OK; 1457 else 1458 sce->state &= ~UGEN_SHORT_OK; 1459 return 0; 1460 case USB_SET_TIMEOUT: 1461 sce = &sc->sc_endpoints[endpt][IN]; 1462 if (sce == NULL 1463 /* XXX this shouldn't happen, but the distinction between 1464 input and output pipes isn't clear enough. 1465 || sce->pipeh == NULL */ 1466 ) 1467 return EINVAL; 1468 sce->timeout = *(int *)addr; 1469 return 0; 1470 case USB_SET_BULK_RA: 1471 if (endpt == USB_CONTROL_ENDPOINT) 1472 return EINVAL; 1473 sce = &sc->sc_endpoints[endpt][IN]; 1474 if (sce == NULL || sce->pipeh == NULL) 1475 return EINVAL; 1476 edesc = sce->edesc; 1477 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1478 return EINVAL; 1479 1480 if (*(int *)addr) { 1481 /* Only turn RA on if it's currently off. */ 1482 if (sce->state & UGEN_BULK_RA) 1483 return 0; 1484 1485 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1486 /* shouldn't happen */ 1487 return EINVAL; 1488 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1489 if (sce->ra_wb_xfer == NULL) 1490 return ENOMEM; 1491 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1492 /* 1493 * Set up a dmabuf because we reuse the xfer with 1494 * the same (max) request length like isoc. 1495 */ 1496 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1497 sce->ra_wb_xferlen) == 0) { 1498 usbd_free_xfer(sce->ra_wb_xfer); 1499 return ENOMEM; 1500 } 1501 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1502 sce->fill = sce->cur = sce->ibuf; 1503 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1504 sce->ra_wb_used = 0; 1505 sce->state |= UGEN_BULK_RA; 1506 sce->state &= ~UGEN_RA_WB_STOP; 1507 /* Now start reading. */ 1508 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1509 NULL, 1510 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1511 0, USBD_NO_TIMEOUT, 1512 ugen_bulkra_intr); 1513 err = usbd_transfer(sce->ra_wb_xfer); 1514 if (err != USBD_IN_PROGRESS) { 1515 sce->state &= ~UGEN_BULK_RA; 1516 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1517 sce->ibuf = NULL; 1518 usbd_free_xfer(sce->ra_wb_xfer); 1519 return EIO; 1520 } 1521 } else { 1522 /* Only turn RA off if it's currently on. */ 1523 if (!(sce->state & UGEN_BULK_RA)) 1524 return 0; 1525 1526 sce->state &= ~UGEN_BULK_RA; 1527 usbd_abort_pipe(sce->pipeh); 1528 usbd_free_xfer(sce->ra_wb_xfer); 1529 /* 1530 * XXX Discard whatever's in the buffer, but we 1531 * should keep it around and drain the buffer 1532 * instead. 1533 */ 1534 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1535 sce->ibuf = NULL; 1536 } 1537 return 0; 1538 case USB_SET_BULK_WB: 1539 if (endpt == USB_CONTROL_ENDPOINT) 1540 return EINVAL; 1541 sce = &sc->sc_endpoints[endpt][OUT]; 1542 if (sce == NULL || sce->pipeh == NULL) 1543 return EINVAL; 1544 edesc = sce->edesc; 1545 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1546 return EINVAL; 1547 1548 if (*(int *)addr) { 1549 /* Only turn WB on if it's currently off. */ 1550 if (sce->state & UGEN_BULK_WB) 1551 return 0; 1552 1553 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1554 /* shouldn't happen */ 1555 return EINVAL; 1556 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1557 if (sce->ra_wb_xfer == NULL) 1558 return ENOMEM; 1559 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1560 /* 1561 * Set up a dmabuf because we reuse the xfer with 1562 * the same (max) request length like isoc. 1563 */ 1564 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1565 sce->ra_wb_xferlen) == 0) { 1566 usbd_free_xfer(sce->ra_wb_xfer); 1567 return ENOMEM; 1568 } 1569 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1570 sce->fill = sce->cur = sce->ibuf; 1571 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1572 sce->ra_wb_used = 0; 1573 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1574 } else { 1575 /* Only turn WB off if it's currently on. */ 1576 if (!(sce->state & UGEN_BULK_WB)) 1577 return 0; 1578 1579 sce->state &= ~UGEN_BULK_WB; 1580 /* 1581 * XXX Discard whatever's in the buffer, but we 1582 * should keep it around and keep writing to 1583 * drain the buffer instead. 1584 */ 1585 usbd_abort_pipe(sce->pipeh); 1586 usbd_free_xfer(sce->ra_wb_xfer); 1587 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1588 sce->ibuf = NULL; 1589 } 1590 return 0; 1591 case USB_SET_BULK_RA_OPT: 1592 case USB_SET_BULK_WB_OPT: 1593 { 1594 struct usb_bulk_ra_wb_opt *opt; 1595 1596 if (endpt == USB_CONTROL_ENDPOINT) 1597 return EINVAL; 1598 opt = (struct usb_bulk_ra_wb_opt *)addr; 1599 if (cmd == USB_SET_BULK_RA_OPT) 1600 sce = &sc->sc_endpoints[endpt][IN]; 1601 else 1602 sce = &sc->sc_endpoints[endpt][OUT]; 1603 if (sce == NULL || sce->pipeh == NULL) 1604 return EINVAL; 1605 if (opt->ra_wb_buffer_size < 1 || 1606 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1607 opt->ra_wb_request_size < 1 || 1608 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1609 return EINVAL; 1610 /* 1611 * XXX These changes do not take effect until the 1612 * next time RA/WB mode is enabled but they ought to 1613 * take effect immediately. 1614 */ 1615 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1616 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1617 return 0; 1618 } 1619 default: 1620 break; 1621 } 1622 1623 if (endpt != USB_CONTROL_ENDPOINT) 1624 return EINVAL; 1625 1626 switch (cmd) { 1627 #ifdef UGEN_DEBUG 1628 case USB_SETDEBUG: 1629 ugendebug = *(int *)addr; 1630 break; 1631 #endif 1632 case USB_GET_CONFIG: 1633 err = usbd_get_config(sc->sc_udev, &conf); 1634 if (err) 1635 return EIO; 1636 *(int *)addr = conf; 1637 break; 1638 case USB_SET_CONFIG: 1639 if (!(flag & FWRITE)) 1640 return EPERM; 1641 err = ugen_set_config(sc, *(int *)addr); 1642 switch (err) { 1643 case USBD_NORMAL_COMPLETION: 1644 break; 1645 case USBD_IN_USE: 1646 return EBUSY; 1647 default: 1648 return EIO; 1649 } 1650 break; 1651 case USB_GET_ALTINTERFACE: 1652 ai = (struct usb_alt_interface *)addr; 1653 err = usbd_device2interface_handle(sc->sc_udev, 1654 ai->uai_interface_index, &iface); 1655 if (err) 1656 return EINVAL; 1657 idesc = usbd_get_interface_descriptor(iface); 1658 if (idesc == NULL) 1659 return EIO; 1660 ai->uai_alt_no = idesc->bAlternateSetting; 1661 break; 1662 case USB_SET_ALTINTERFACE: 1663 if (!(flag & FWRITE)) 1664 return EPERM; 1665 ai = (struct usb_alt_interface *)addr; 1666 err = usbd_device2interface_handle(sc->sc_udev, 1667 ai->uai_interface_index, &iface); 1668 if (err) 1669 return EINVAL; 1670 err = ugen_set_interface(sc, ai->uai_interface_index, 1671 ai->uai_alt_no); 1672 if (err) 1673 return EINVAL; 1674 break; 1675 case USB_GET_NO_ALT: 1676 ai = (struct usb_alt_interface *)addr; 1677 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1678 if (cdesc == NULL) 1679 return EINVAL; 1680 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1681 if (idesc == NULL) { 1682 kmem_free(cdesc, cdesclen); 1683 return EINVAL; 1684 } 1685 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1686 idesc->bInterfaceNumber); 1687 kmem_free(cdesc, cdesclen); 1688 break; 1689 case USB_GET_DEVICE_DESC: 1690 *(usb_device_descriptor_t *)addr = 1691 *usbd_get_device_descriptor(sc->sc_udev); 1692 break; 1693 case USB_GET_CONFIG_DESC: 1694 cd = (struct usb_config_desc *)addr; 1695 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1696 if (cdesc == NULL) 1697 return EINVAL; 1698 cd->ucd_desc = *cdesc; 1699 kmem_free(cdesc, cdesclen); 1700 break; 1701 case USB_GET_INTERFACE_DESC: 1702 id = (struct usb_interface_desc *)addr; 1703 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1704 if (cdesc == NULL) 1705 return EINVAL; 1706 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1707 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1708 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1709 else 1710 alt = id->uid_alt_index; 1711 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1712 if (idesc == NULL) { 1713 kmem_free(cdesc, cdesclen); 1714 return EINVAL; 1715 } 1716 id->uid_desc = *idesc; 1717 kmem_free(cdesc, cdesclen); 1718 break; 1719 case USB_GET_ENDPOINT_DESC: 1720 ed = (struct usb_endpoint_desc *)addr; 1721 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1722 if (cdesc == NULL) 1723 return EINVAL; 1724 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1725 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1726 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1727 else 1728 alt = ed->ued_alt_index; 1729 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1730 alt, ed->ued_endpoint_index); 1731 if (edesc == NULL) { 1732 kmem_free(cdesc, cdesclen); 1733 return EINVAL; 1734 } 1735 ed->ued_desc = *edesc; 1736 kmem_free(cdesc, cdesclen); 1737 break; 1738 case USB_GET_FULL_DESC: 1739 { 1740 int len; 1741 struct iovec iov; 1742 struct uio uio; 1743 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1744 int error; 1745 1746 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1747 if (cdesc == NULL) 1748 return EINVAL; 1749 len = cdesclen; 1750 if (len > fd->ufd_size) 1751 len = fd->ufd_size; 1752 iov.iov_base = (void *)fd->ufd_data; 1753 iov.iov_len = len; 1754 uio.uio_iov = &iov; 1755 uio.uio_iovcnt = 1; 1756 uio.uio_resid = len; 1757 uio.uio_offset = 0; 1758 uio.uio_rw = UIO_READ; 1759 uio.uio_vmspace = l->l_proc->p_vmspace; 1760 error = uiomove((void *)cdesc, len, &uio); 1761 kmem_free(cdesc, cdesclen); 1762 return error; 1763 } 1764 case USB_GET_STRING_DESC: { 1765 int len; 1766 si = (struct usb_string_desc *)addr; 1767 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1768 si->usd_language_id, &si->usd_desc, &len); 1769 if (err) 1770 return EINVAL; 1771 break; 1772 } 1773 case USB_DO_REQUEST: 1774 { 1775 struct usb_ctl_request *ur = (void *)addr; 1776 int len = UGETW(ur->ucr_request.wLength); 1777 struct iovec iov; 1778 struct uio uio; 1779 void *ptr = 0; 1780 usbd_status xerr; 1781 int error = 0; 1782 1783 if (!(flag & FWRITE)) 1784 return EPERM; 1785 /* Avoid requests that would damage the bus integrity. */ 1786 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1787 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1788 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1789 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1790 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1791 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1792 return EINVAL; 1793 1794 if (len < 0 || len > 32767) 1795 return EINVAL; 1796 if (len != 0) { 1797 iov.iov_base = (void *)ur->ucr_data; 1798 iov.iov_len = len; 1799 uio.uio_iov = &iov; 1800 uio.uio_iovcnt = 1; 1801 uio.uio_resid = len; 1802 uio.uio_offset = 0; 1803 uio.uio_rw = 1804 ur->ucr_request.bmRequestType & UT_READ ? 1805 UIO_READ : UIO_WRITE; 1806 uio.uio_vmspace = l->l_proc->p_vmspace; 1807 ptr = kmem_alloc(len, KM_SLEEP); 1808 if (uio.uio_rw == UIO_WRITE) { 1809 error = uiomove(ptr, len, &uio); 1810 if (error) 1811 goto ret; 1812 } 1813 } 1814 sce = &sc->sc_endpoints[endpt][IN]; 1815 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1816 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1817 if (xerr) { 1818 error = EIO; 1819 goto ret; 1820 } 1821 if (len != 0) { 1822 if (uio.uio_rw == UIO_READ) { 1823 size_t alen = min(len, ur->ucr_actlen); 1824 error = uiomove(ptr, alen, &uio); 1825 if (error) 1826 goto ret; 1827 } 1828 } 1829 ret: 1830 if (ptr) 1831 kmem_free(ptr, len); 1832 return error; 1833 } 1834 case USB_GET_DEVICEINFO: 1835 usbd_fill_deviceinfo(sc->sc_udev, 1836 (struct usb_device_info *)addr, 0); 1837 break; 1838 #ifdef COMPAT_30 1839 case USB_GET_DEVICEINFO_OLD: 1840 usbd_fill_deviceinfo_old(sc->sc_udev, 1841 (struct usb_device_info_old *)addr, 0); 1842 1843 break; 1844 #endif 1845 default: 1846 return EINVAL; 1847 } 1848 return 0; 1849 } 1850 1851 int 1852 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1853 { 1854 int endpt = UGENENDPOINT(dev); 1855 struct ugen_softc *sc; 1856 int error; 1857 1858 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1859 if (sc == NULL) 1860 return ENXIO; 1861 1862 sc->sc_refcnt++; 1863 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1864 if (--sc->sc_refcnt < 0) 1865 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1866 return error; 1867 } 1868 1869 int 1870 ugenpoll(dev_t dev, int events, struct lwp *l) 1871 { 1872 struct ugen_softc *sc; 1873 struct ugen_endpoint *sce_in, *sce_out; 1874 int revents = 0; 1875 1876 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1877 if (sc == NULL) 1878 return ENXIO; 1879 1880 if (sc->sc_dying) 1881 return POLLHUP; 1882 1883 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1884 return ENODEV; 1885 1886 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1887 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1888 if (sce_in == NULL && sce_out == NULL) 1889 return POLLERR; 1890 #ifdef DIAGNOSTIC 1891 if (!sce_in->edesc && !sce_out->edesc) { 1892 printf("ugenpoll: no edesc\n"); 1893 return POLLERR; 1894 } 1895 /* It's possible to have only one pipe open. */ 1896 if (!sce_in->pipeh && !sce_out->pipeh) { 1897 printf("ugenpoll: no pipe\n"); 1898 return POLLERR; 1899 } 1900 #endif 1901 1902 mutex_enter(&sc->sc_lock); 1903 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1904 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1905 case UE_INTERRUPT: 1906 if (sce_in->q.c_cc > 0) 1907 revents |= events & (POLLIN | POLLRDNORM); 1908 else 1909 selrecord(l, &sce_in->rsel); 1910 break; 1911 case UE_ISOCHRONOUS: 1912 if (sce_in->cur != sce_in->fill) 1913 revents |= events & (POLLIN | POLLRDNORM); 1914 else 1915 selrecord(l, &sce_in->rsel); 1916 break; 1917 case UE_BULK: 1918 if (sce_in->state & UGEN_BULK_RA) { 1919 if (sce_in->ra_wb_used > 0) 1920 revents |= events & 1921 (POLLIN | POLLRDNORM); 1922 else 1923 selrecord(l, &sce_in->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 & (POLLIN | POLLRDNORM); 1932 break; 1933 default: 1934 break; 1935 } 1936 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1937 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1938 case UE_INTERRUPT: 1939 case UE_ISOCHRONOUS: 1940 /* XXX unimplemented */ 1941 break; 1942 case UE_BULK: 1943 if (sce_out->state & UGEN_BULK_WB) { 1944 if (sce_out->ra_wb_used < 1945 sce_out->limit - sce_out->ibuf) 1946 revents |= events & 1947 (POLLOUT | POLLWRNORM); 1948 else 1949 selrecord(l, &sce_out->rsel); 1950 break; 1951 } 1952 /* 1953 * We have no easy way of determining if a read will 1954 * yield any data or a write will happen. 1955 * Pretend they will. 1956 */ 1957 revents |= events & (POLLOUT | POLLWRNORM); 1958 break; 1959 default: 1960 break; 1961 } 1962 1963 mutex_exit(&sc->sc_lock); 1964 1965 return revents; 1966 } 1967 1968 static void 1969 filt_ugenrdetach(struct knote *kn) 1970 { 1971 struct ugen_endpoint *sce = kn->kn_hook; 1972 struct ugen_softc *sc = sce->sc; 1973 1974 mutex_enter(&sc->sc_lock); 1975 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1976 mutex_exit(&sc->sc_lock); 1977 } 1978 1979 static int 1980 filt_ugenread_intr(struct knote *kn, long hint) 1981 { 1982 struct ugen_endpoint *sce = kn->kn_hook; 1983 1984 kn->kn_data = sce->q.c_cc; 1985 return kn->kn_data > 0; 1986 } 1987 1988 static int 1989 filt_ugenread_isoc(struct knote *kn, long hint) 1990 { 1991 struct ugen_endpoint *sce = kn->kn_hook; 1992 1993 if (sce->cur == sce->fill) 1994 return 0; 1995 1996 if (sce->cur < sce->fill) 1997 kn->kn_data = sce->fill - sce->cur; 1998 else 1999 kn->kn_data = (sce->limit - sce->cur) + 2000 (sce->fill - sce->ibuf); 2001 2002 return 1; 2003 } 2004 2005 static int 2006 filt_ugenread_bulk(struct knote *kn, long hint) 2007 { 2008 struct ugen_endpoint *sce = kn->kn_hook; 2009 2010 if (!(sce->state & UGEN_BULK_RA)) 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 == 0) 2019 return 0; 2020 2021 kn->kn_data = sce->ra_wb_used; 2022 2023 return 1; 2024 } 2025 2026 static int 2027 filt_ugenwrite_bulk(struct knote *kn, long hint) 2028 { 2029 struct ugen_endpoint *sce = kn->kn_hook; 2030 2031 if (!(sce->state & UGEN_BULK_WB)) 2032 /* 2033 * We have no easy way of determining if a read will 2034 * yield any data or a write will happen. 2035 * So, emulate "seltrue". 2036 */ 2037 return filt_seltrue(kn, hint); 2038 2039 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2040 return 0; 2041 2042 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2043 2044 return 1; 2045 } 2046 2047 static const struct filterops ugenread_intr_filtops = 2048 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2049 2050 static const struct filterops ugenread_isoc_filtops = 2051 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2052 2053 static const struct filterops ugenread_bulk_filtops = 2054 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2055 2056 static const struct filterops ugenwrite_bulk_filtops = 2057 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2058 2059 int 2060 ugenkqfilter(dev_t dev, struct knote *kn) 2061 { 2062 struct ugen_softc *sc; 2063 struct ugen_endpoint *sce; 2064 struct klist *klist; 2065 2066 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2067 if (sc == NULL) 2068 return ENXIO; 2069 2070 if (sc->sc_dying) 2071 return ENXIO; 2072 2073 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2074 return ENODEV; 2075 2076 switch (kn->kn_filter) { 2077 case EVFILT_READ: 2078 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2079 if (sce == NULL) 2080 return EINVAL; 2081 2082 klist = &sce->rsel.sel_klist; 2083 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2084 case UE_INTERRUPT: 2085 kn->kn_fop = &ugenread_intr_filtops; 2086 break; 2087 case UE_ISOCHRONOUS: 2088 kn->kn_fop = &ugenread_isoc_filtops; 2089 break; 2090 case UE_BULK: 2091 kn->kn_fop = &ugenread_bulk_filtops; 2092 break; 2093 default: 2094 return EINVAL; 2095 } 2096 break; 2097 2098 case EVFILT_WRITE: 2099 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2100 if (sce == NULL) 2101 return EINVAL; 2102 2103 klist = &sce->rsel.sel_klist; 2104 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2105 case UE_INTERRUPT: 2106 case UE_ISOCHRONOUS: 2107 /* XXX poll doesn't support this */ 2108 return EINVAL; 2109 2110 case UE_BULK: 2111 kn->kn_fop = &ugenwrite_bulk_filtops; 2112 break; 2113 default: 2114 return EINVAL; 2115 } 2116 break; 2117 2118 default: 2119 return EINVAL; 2120 } 2121 2122 kn->kn_hook = sce; 2123 2124 mutex_enter(&sc->sc_lock); 2125 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2126 mutex_exit(&sc->sc_lock); 2127 2128 return 0; 2129 } 2130
Indexes created Wed Oct 22 13:09:56 GMT 2025