ugen.c revision 1.134.10.1
1 /* $NetBSD: ugen.c,v 1.134.10.1 2018/01/31 18:01:55 martin 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 1.134.10.1 2018/01/31 18:01:55 martin 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) 370 return ENXIO; 371 372 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 373 flag, mode, unit, endpt)); 374 375 if (sc == NULL || sc->sc_dying) 376 return ENXIO; 377 378 /* The control endpoint allows multiple opens. */ 379 if (endpt == USB_CONTROL_ENDPOINT) { 380 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 381 return 0; 382 } 383 384 if (sc->sc_is_open[endpt]) 385 return EBUSY; 386 387 /* Make sure there are pipes for all directions. */ 388 for (dir = OUT; dir <= IN; dir++) { 389 if (flag & (dir == OUT ? FWRITE : FREAD)) { 390 sce = &sc->sc_endpoints[endpt][dir]; 391 if (sce->edesc == NULL) 392 return ENXIO; 393 } 394 } 395 396 /* Actually open the pipes. */ 397 /* XXX Should back out properly if it fails. */ 398 for (dir = OUT; dir <= IN; dir++) { 399 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 400 continue; 401 sce = &sc->sc_endpoints[endpt][dir]; 402 sce->state = 0; 403 sce->timeout = USBD_NO_TIMEOUT; 404 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 405 sc, endpt, dir, sce)); 406 edesc = sce->edesc; 407 switch (edesc->bmAttributes & UE_XFERTYPE) { 408 case UE_INTERRUPT: 409 if (dir == OUT) { 410 err = usbd_open_pipe(sce->iface, 411 edesc->bEndpointAddress, 0, &sce->pipeh); 412 if (err) 413 return EIO; 414 break; 415 } 416 isize = UGETW(edesc->wMaxPacketSize); 417 if (isize == 0) /* shouldn't happen */ 418 return EINVAL; 419 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 420 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 421 endpt, isize)); 422 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 423 kmem_free(sce->ibuf, isize); 424 sce->ibuf = NULL; 425 return ENOMEM; 426 } 427 err = usbd_open_pipe_intr(sce->iface, 428 edesc->bEndpointAddress, 429 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 430 sce->ibuf, isize, ugenintr, 431 USBD_DEFAULT_INTERVAL); 432 if (err) { 433 clfree(&sce->q); 434 kmem_free(sce->ibuf, isize); 435 sce->ibuf = NULL; 436 return EIO; 437 } 438 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 439 break; 440 case UE_BULK: 441 err = usbd_open_pipe(sce->iface, 442 edesc->bEndpointAddress, 0, &sce->pipeh); 443 if (err) 444 return EIO; 445 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 446 /* 447 * Use request size for non-RA/WB transfers 448 * as the default. 449 */ 450 sce->ra_wb_reqsize = UGEN_BBSIZE; 451 break; 452 case UE_ISOCHRONOUS: 453 if (dir == OUT) 454 return EINVAL; 455 isize = UGETW(edesc->wMaxPacketSize); 456 if (isize == 0) /* shouldn't happen */ 457 return EINVAL; 458 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 459 KM_SLEEP); 460 sce->cur = sce->fill = sce->ibuf; 461 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 462 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 463 endpt, isize)); 464 err = usbd_open_pipe(sce->iface, 465 edesc->bEndpointAddress, 0, &sce->pipeh); 466 if (err) { 467 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 468 sce->ibuf = NULL; 469 return EIO; 470 } 471 for (i = 0; i < UGEN_NISOREQS; ++i) { 472 sce->isoreqs[i].sce = sce; 473 err = usbd_create_xfer(sce->pipeh, 474 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 475 &xfer); 476 if (err) 477 goto bad; 478 sce->isoreqs[i].xfer = xfer; 479 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 480 for (j = 0; j < UGEN_NISORFRMS; ++j) 481 sce->isoreqs[i].sizes[j] = isize; 482 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 483 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 484 ugen_isoc_rintr); 485 (void)usbd_transfer(xfer); 486 } 487 DPRINTFN(5, ("ugenopen: isoc open done\n")); 488 break; 489 bad: 490 while (--i >= 0) /* implicit buffer free */ 491 usbd_destroy_xfer(sce->isoreqs[i].xfer); 492 usbd_close_pipe(sce->pipeh); 493 sce->pipeh = NULL; 494 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 495 sce->ibuf = NULL; 496 return ENOMEM; 497 case UE_CONTROL: 498 sce->timeout = USBD_DEFAULT_TIMEOUT; 499 return EINVAL; 500 } 501 } 502 sc->sc_is_open[endpt] = 1; 503 return 0; 504 } 505 506 int 507 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 508 { 509 int endpt = UGENENDPOINT(dev); 510 struct ugen_softc *sc; 511 struct ugen_endpoint *sce; 512 int dir; 513 int i; 514 515 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 516 if (sc == NULL) 517 return ENXIO; 518 519 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 520 flag, mode, UGENUNIT(dev), endpt)); 521 522 #ifdef DIAGNOSTIC 523 if (!sc->sc_is_open[endpt]) { 524 printf("ugenclose: not open\n"); 525 return EINVAL; 526 } 527 #endif 528 529 if (endpt == USB_CONTROL_ENDPOINT) { 530 DPRINTFN(5, ("ugenclose: close control\n")); 531 sc->sc_is_open[endpt] = 0; 532 return 0; 533 } 534 535 for (dir = OUT; dir <= IN; dir++) { 536 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 537 continue; 538 sce = &sc->sc_endpoints[endpt][dir]; 539 if (sce->pipeh == NULL) 540 continue; 541 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 542 endpt, dir, sce)); 543 544 usbd_abort_pipe(sce->pipeh); 545 546 int isize = UGETW(sce->edesc->wMaxPacketSize); 547 int msize = 0; 548 549 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 550 case UE_INTERRUPT: 551 ndflush(&sce->q, sce->q.c_cc); 552 clfree(&sce->q); 553 msize = isize; 554 break; 555 case UE_ISOCHRONOUS: 556 for (i = 0; i < UGEN_NISOREQS; ++i) 557 usbd_destroy_xfer(sce->isoreqs[i].xfer); 558 msize = isize * UGEN_NISOFRAMES; 559 break; 560 case UE_BULK: 561 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 562 usbd_destroy_xfer(sce->ra_wb_xfer); 563 msize = sce->ra_wb_bufsize; 564 } 565 break; 566 default: 567 break; 568 } 569 usbd_close_pipe(sce->pipeh); 570 sce->pipeh = NULL; 571 if (sce->ibuf != NULL) { 572 kmem_free(sce->ibuf, msize); 573 sce->ibuf = NULL; 574 } 575 } 576 sc->sc_is_open[endpt] = 0; 577 578 return 0; 579 } 580 581 Static int 582 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 583 { 584 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 585 uint32_t n, tn; 586 struct usbd_xfer *xfer; 587 usbd_status err; 588 int error = 0; 589 590 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 591 592 if (sc->sc_dying) 593 return EIO; 594 595 if (endpt == USB_CONTROL_ENDPOINT) 596 return ENODEV; 597 598 #ifdef DIAGNOSTIC 599 if (sce->edesc == NULL) { 600 printf("ugenread: no edesc\n"); 601 return EIO; 602 } 603 if (sce->pipeh == NULL) { 604 printf("ugenread: no pipe\n"); 605 return EIO; 606 } 607 #endif 608 609 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 610 case UE_INTERRUPT: 611 /* Block until activity occurred. */ 612 mutex_enter(&sc->sc_lock); 613 while (sce->q.c_cc == 0) { 614 if (flag & IO_NDELAY) { 615 mutex_exit(&sc->sc_lock); 616 return EWOULDBLOCK; 617 } 618 sce->state |= UGEN_ASLP; 619 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 620 /* "ugenri" */ 621 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 622 mstohz(sce->timeout)); 623 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 624 if (sc->sc_dying) 625 error = EIO; 626 if (error) { 627 sce->state &= ~UGEN_ASLP; 628 break; 629 } 630 } 631 mutex_exit(&sc->sc_lock); 632 633 /* Transfer as many chunks as possible. */ 634 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 635 n = min(sce->q.c_cc, uio->uio_resid); 636 if (n > sizeof(sc->sc_buffer)) 637 n = sizeof(sc->sc_buffer); 638 639 /* Remove a small chunk from the input queue. */ 640 q_to_b(&sce->q, sc->sc_buffer, n); 641 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 642 643 /* Copy the data to the user process. */ 644 error = uiomove(sc->sc_buffer, n, uio); 645 if (error) 646 break; 647 } 648 break; 649 case UE_BULK: 650 if (sce->state & UGEN_BULK_RA) { 651 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 652 uio->uio_resid, sce->ra_wb_used)); 653 xfer = sce->ra_wb_xfer; 654 655 mutex_enter(&sc->sc_lock); 656 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 657 mutex_exit(&sc->sc_lock); 658 return EWOULDBLOCK; 659 } 660 while (uio->uio_resid > 0 && !error) { 661 while (sce->ra_wb_used == 0) { 662 sce->state |= UGEN_ASLP; 663 DPRINTFN(5, 664 ("ugenread: sleep on %p\n", 665 sce)); 666 /* "ugenrb" */ 667 error = cv_timedwait_sig(&sce->cv, 668 &sc->sc_lock, mstohz(sce->timeout)); 669 DPRINTFN(5, 670 ("ugenread: woke, error=%d\n", 671 error)); 672 if (sc->sc_dying) 673 error = EIO; 674 if (error) { 675 sce->state &= ~UGEN_ASLP; 676 break; 677 } 678 } 679 680 /* Copy data to the process. */ 681 while (uio->uio_resid > 0 682 && sce->ra_wb_used > 0) { 683 n = min(uio->uio_resid, 684 sce->ra_wb_used); 685 n = min(n, sce->limit - sce->cur); 686 error = uiomove(sce->cur, n, uio); 687 if (error) 688 break; 689 sce->cur += n; 690 sce->ra_wb_used -= n; 691 if (sce->cur == sce->limit) 692 sce->cur = sce->ibuf; 693 } 694 695 /* 696 * If the transfers stopped because the 697 * buffer was full, restart them. 698 */ 699 if (sce->state & UGEN_RA_WB_STOP && 700 sce->ra_wb_used < sce->limit - sce->ibuf) { 701 n = (sce->limit - sce->ibuf) 702 - sce->ra_wb_used; 703 usbd_setup_xfer(xfer, 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 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 723 0, 0, &xfer); 724 if (error) 725 return error; 726 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 727 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 728 tn = n; 729 err = usbd_bulk_transfer(xfer, sce->pipeh, 730 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 731 sce->timeout, sc->sc_buffer, &tn); 732 if (err) { 733 if (err == USBD_INTERRUPTED) 734 error = EINTR; 735 else if (err == USBD_TIMEOUT) 736 error = ETIMEDOUT; 737 else 738 error = EIO; 739 break; 740 } 741 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 742 error = uiomove(sc->sc_buffer, tn, uio); 743 if (error || tn < n) 744 break; 745 } 746 usbd_destroy_xfer(xfer); 747 break; 748 case UE_ISOCHRONOUS: 749 mutex_enter(&sc->sc_lock); 750 while (sce->cur == sce->fill) { 751 if (flag & IO_NDELAY) { 752 mutex_exit(&sc->sc_lock); 753 return EWOULDBLOCK; 754 } 755 sce->state |= UGEN_ASLP; 756 /* "ugenri" */ 757 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 758 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 759 mstohz(sce->timeout)); 760 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 761 if (sc->sc_dying) 762 error = EIO; 763 if (error) { 764 sce->state &= ~UGEN_ASLP; 765 break; 766 } 767 } 768 769 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 770 if(sce->fill > sce->cur) 771 n = min(sce->fill - sce->cur, uio->uio_resid); 772 else 773 n = min(sce->limit - sce->cur, uio->uio_resid); 774 775 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 776 777 /* Copy the data to the user process. */ 778 error = uiomove(sce->cur, n, uio); 779 if (error) 780 break; 781 sce->cur += n; 782 if (sce->cur >= sce->limit) 783 sce->cur = sce->ibuf; 784 } 785 mutex_exit(&sc->sc_lock); 786 break; 787 788 789 default: 790 return ENXIO; 791 } 792 return error; 793 } 794 795 int 796 ugenread(dev_t dev, struct uio *uio, int flag) 797 { 798 int endpt = UGENENDPOINT(dev); 799 struct ugen_softc *sc; 800 int error; 801 802 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 803 if (sc == NULL) 804 return ENXIO; 805 806 mutex_enter(&sc->sc_lock); 807 sc->sc_refcnt++; 808 mutex_exit(&sc->sc_lock); 809 810 error = ugen_do_read(sc, endpt, uio, flag); 811 812 mutex_enter(&sc->sc_lock); 813 if (--sc->sc_refcnt < 0) 814 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 815 mutex_exit(&sc->sc_lock); 816 817 return error; 818 } 819 820 Static int 821 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 822 int flag) 823 { 824 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 825 uint32_t n; 826 int error = 0; 827 uint32_t tn; 828 char *dbuf; 829 struct usbd_xfer *xfer; 830 usbd_status err; 831 832 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 833 834 if (sc->sc_dying) 835 return EIO; 836 837 if (endpt == USB_CONTROL_ENDPOINT) 838 return ENODEV; 839 840 #ifdef DIAGNOSTIC 841 if (sce->edesc == NULL) { 842 printf("ugenwrite: no edesc\n"); 843 return EIO; 844 } 845 if (sce->pipeh == NULL) { 846 printf("ugenwrite: no pipe\n"); 847 return EIO; 848 } 849 #endif 850 851 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 852 case UE_BULK: 853 if (sce->state & UGEN_BULK_WB) { 854 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 855 uio->uio_resid, sce->ra_wb_used)); 856 xfer = sce->ra_wb_xfer; 857 858 mutex_enter(&sc->sc_lock); 859 if (sce->ra_wb_used == sce->limit - sce->ibuf && 860 flag & IO_NDELAY) { 861 mutex_exit(&sc->sc_lock); 862 return EWOULDBLOCK; 863 } 864 while (uio->uio_resid > 0 && !error) { 865 while (sce->ra_wb_used == 866 sce->limit - sce->ibuf) { 867 sce->state |= UGEN_ASLP; 868 DPRINTFN(5, 869 ("ugenwrite: sleep on %p\n", 870 sce)); 871 /* "ugenwb" */ 872 error = cv_timedwait_sig(&sce->cv, 873 &sc->sc_lock, mstohz(sce->timeout)); 874 DPRINTFN(5, 875 ("ugenwrite: woke, error=%d\n", 876 error)); 877 if (sc->sc_dying) 878 error = EIO; 879 if (error) { 880 sce->state &= ~UGEN_ASLP; 881 break; 882 } 883 } 884 885 /* Copy data from the process. */ 886 while (uio->uio_resid > 0 && 887 sce->ra_wb_used < sce->limit - sce->ibuf) { 888 n = min(uio->uio_resid, 889 (sce->limit - sce->ibuf) 890 - sce->ra_wb_used); 891 n = min(n, sce->limit - sce->fill); 892 error = uiomove(sce->fill, n, uio); 893 if (error) 894 break; 895 sce->fill += n; 896 sce->ra_wb_used += n; 897 if (sce->fill == sce->limit) 898 sce->fill = sce->ibuf; 899 } 900 901 /* 902 * If the transfers stopped because the 903 * buffer was empty, restart them. 904 */ 905 if (sce->state & UGEN_RA_WB_STOP && 906 sce->ra_wb_used > 0) { 907 dbuf = (char *)usbd_get_buffer(xfer); 908 n = min(sce->ra_wb_used, 909 sce->ra_wb_xferlen); 910 tn = min(n, sce->limit - sce->cur); 911 memcpy(dbuf, sce->cur, tn); 912 dbuf += tn; 913 if (n - tn > 0) 914 memcpy(dbuf, sce->ibuf, 915 n - tn); 916 usbd_setup_xfer(xfer, sce, NULL, n, 917 0, USBD_NO_TIMEOUT, 918 ugen_bulkwb_intr); 919 sce->state &= ~UGEN_RA_WB_STOP; 920 err = usbd_transfer(xfer); 921 if (err != USBD_IN_PROGRESS) 922 /* 923 * The transfer has not been 924 * queued. Setting STOP 925 * will make us try again 926 * at the next read. 927 */ 928 sce->state |= UGEN_RA_WB_STOP; 929 } 930 } 931 mutex_exit(&sc->sc_lock); 932 break; 933 } 934 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 935 0, 0, &xfer); 936 if (error) 937 return error; 938 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 939 error = uiomove(sc->sc_buffer, n, uio); 940 if (error) 941 break; 942 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 943 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 944 sc->sc_buffer, &n); 945 if (err) { 946 if (err == USBD_INTERRUPTED) 947 error = EINTR; 948 else if (err == USBD_TIMEOUT) 949 error = ETIMEDOUT; 950 else 951 error = EIO; 952 break; 953 } 954 } 955 usbd_destroy_xfer(xfer); 956 break; 957 case UE_INTERRUPT: 958 error = usbd_create_xfer(sce->pipeh, 959 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 960 if (error) 961 return error; 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_destroy_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->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, sc->sc_dev); 1066 1067 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1068 for (dir = OUT; dir <= IN; dir++) { 1069 sce = &sc->sc_endpoints[i][dir]; 1070 seldestroy(&sce->rsel); 1071 cv_destroy(&sce->cv); 1072 } 1073 } 1074 1075 cv_destroy(&sc->sc_detach_cv); 1076 mutex_destroy(&sc->sc_lock); 1077 1078 return 0; 1079 } 1080 1081 Static void 1082 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1083 { 1084 struct ugen_endpoint *sce = addr; 1085 struct ugen_softc *sc = sce->sc; 1086 uint32_t count; 1087 u_char *ibuf; 1088 1089 if (status == USBD_CANCELLED) 1090 return; 1091 1092 if (status != USBD_NORMAL_COMPLETION) { 1093 DPRINTF(("ugenintr: status=%d\n", status)); 1094 if (status == USBD_STALLED) 1095 usbd_clear_endpoint_stall_async(sce->pipeh); 1096 return; 1097 } 1098 1099 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1100 ibuf = sce->ibuf; 1101 1102 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1103 xfer, status, count)); 1104 DPRINTFN(5, (" data = %02x %02x %02x\n", 1105 ibuf[0], ibuf[1], ibuf[2])); 1106 1107 (void)b_to_q(ibuf, count, &sce->q); 1108 1109 mutex_enter(&sc->sc_lock); 1110 if (sce->state & UGEN_ASLP) { 1111 sce->state &= ~UGEN_ASLP; 1112 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1113 cv_signal(&sce->cv); 1114 } 1115 mutex_exit(&sc->sc_lock); 1116 selnotify(&sce->rsel, 0, 0); 1117 } 1118 1119 Static void 1120 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1121 usbd_status status) 1122 { 1123 struct isoreq *req = addr; 1124 struct ugen_endpoint *sce = req->sce; 1125 struct ugen_softc *sc = sce->sc; 1126 uint32_t count, n; 1127 int i, isize; 1128 1129 /* Return if we are aborting. */ 1130 if (status == USBD_CANCELLED) 1131 return; 1132 1133 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1134 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1135 (long)(req - sce->isoreqs), count)); 1136 1137 /* throw away oldest input if the buffer is full */ 1138 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1139 sce->cur += count; 1140 if(sce->cur >= sce->limit) 1141 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1142 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1143 count)); 1144 } 1145 1146 isize = UGETW(sce->edesc->wMaxPacketSize); 1147 for (i = 0; i < UGEN_NISORFRMS; i++) { 1148 uint32_t actlen = req->sizes[i]; 1149 char const *tbuf = (char const *)req->dmabuf + isize * i; 1150 1151 /* copy data to buffer */ 1152 while (actlen > 0) { 1153 n = min(actlen, sce->limit - sce->fill); 1154 memcpy(sce->fill, tbuf, n); 1155 1156 tbuf += n; 1157 actlen -= n; 1158 sce->fill += n; 1159 if(sce->fill == sce->limit) 1160 sce->fill = sce->ibuf; 1161 } 1162 1163 /* setup size for next transfer */ 1164 req->sizes[i] = isize; 1165 } 1166 1167 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1168 ugen_isoc_rintr); 1169 (void)usbd_transfer(xfer); 1170 1171 mutex_enter(&sc->sc_lock); 1172 if (sce->state & UGEN_ASLP) { 1173 sce->state &= ~UGEN_ASLP; 1174 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1175 cv_signal(&sce->cv); 1176 } 1177 mutex_exit(&sc->sc_lock); 1178 selnotify(&sce->rsel, 0, 0); 1179 } 1180 1181 Static void 1182 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1183 usbd_status status) 1184 { 1185 struct ugen_endpoint *sce = addr; 1186 struct ugen_softc *sc = sce->sc; 1187 uint32_t count, n; 1188 char const *tbuf; 1189 usbd_status err; 1190 1191 /* Return if we are aborting. */ 1192 if (status == USBD_CANCELLED) 1193 return; 1194 1195 if (status != USBD_NORMAL_COMPLETION) { 1196 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1197 sce->state |= UGEN_RA_WB_STOP; 1198 if (status == USBD_STALLED) 1199 usbd_clear_endpoint_stall_async(sce->pipeh); 1200 return; 1201 } 1202 1203 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1204 1205 /* Keep track of how much is in the buffer. */ 1206 sce->ra_wb_used += count; 1207 1208 /* Copy data to buffer. */ 1209 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1210 n = min(count, sce->limit - sce->fill); 1211 memcpy(sce->fill, tbuf, n); 1212 tbuf += n; 1213 count -= n; 1214 sce->fill += n; 1215 if (sce->fill == sce->limit) 1216 sce->fill = sce->ibuf; 1217 if (count > 0) { 1218 memcpy(sce->fill, tbuf, count); 1219 sce->fill += count; 1220 } 1221 1222 /* Set up the next request if necessary. */ 1223 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1224 if (n > 0) { 1225 usbd_setup_xfer(xfer, sce, NULL, min(n, sce->ra_wb_xferlen), 0, 1226 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1227 err = usbd_transfer(xfer); 1228 if (err != USBD_IN_PROGRESS) { 1229 printf("usbd_bulkra_intr: error=%d\n", err); 1230 /* 1231 * The transfer has not been queued. Setting STOP 1232 * will make us try again at the next read. 1233 */ 1234 sce->state |= UGEN_RA_WB_STOP; 1235 } 1236 } 1237 else 1238 sce->state |= UGEN_RA_WB_STOP; 1239 1240 mutex_enter(&sc->sc_lock); 1241 if (sce->state & UGEN_ASLP) { 1242 sce->state &= ~UGEN_ASLP; 1243 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1244 cv_signal(&sce->cv); 1245 } 1246 mutex_exit(&sc->sc_lock); 1247 selnotify(&sce->rsel, 0, 0); 1248 } 1249 1250 Static void 1251 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1252 usbd_status status) 1253 { 1254 struct ugen_endpoint *sce = addr; 1255 struct ugen_softc *sc = sce->sc; 1256 uint32_t count, n; 1257 char *tbuf; 1258 usbd_status err; 1259 1260 /* Return if we are aborting. */ 1261 if (status == USBD_CANCELLED) 1262 return; 1263 1264 if (status != USBD_NORMAL_COMPLETION) { 1265 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1266 sce->state |= UGEN_RA_WB_STOP; 1267 if (status == USBD_STALLED) 1268 usbd_clear_endpoint_stall_async(sce->pipeh); 1269 return; 1270 } 1271 1272 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1273 1274 /* Keep track of how much is in the buffer. */ 1275 sce->ra_wb_used -= count; 1276 1277 /* Update buffer pointers. */ 1278 sce->cur += count; 1279 if (sce->cur >= sce->limit) 1280 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1281 1282 /* Set up next request if necessary. */ 1283 if (sce->ra_wb_used > 0) { 1284 /* copy data from buffer */ 1285 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1286 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1287 n = min(count, sce->limit - sce->cur); 1288 memcpy(tbuf, sce->cur, n); 1289 tbuf += n; 1290 if (count - n > 0) 1291 memcpy(tbuf, sce->ibuf, count - n); 1292 1293 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1294 ugen_bulkwb_intr); 1295 err = usbd_transfer(xfer); 1296 if (err != USBD_IN_PROGRESS) { 1297 printf("usbd_bulkwb_intr: error=%d\n", err); 1298 /* 1299 * The transfer has not been queued. Setting STOP 1300 * will make us try again at the next write. 1301 */ 1302 sce->state |= UGEN_RA_WB_STOP; 1303 } 1304 } 1305 else 1306 sce->state |= UGEN_RA_WB_STOP; 1307 1308 mutex_enter(&sc->sc_lock); 1309 if (sce->state & UGEN_ASLP) { 1310 sce->state &= ~UGEN_ASLP; 1311 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1312 cv_signal(&sce->cv); 1313 } 1314 mutex_exit(&sc->sc_lock); 1315 selnotify(&sce->rsel, 0, 0); 1316 } 1317 1318 Static usbd_status 1319 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1320 { 1321 struct usbd_interface *iface; 1322 usb_endpoint_descriptor_t *ed; 1323 usbd_status err; 1324 struct ugen_endpoint *sce; 1325 uint8_t niface, nendpt, endptno, endpt; 1326 int dir; 1327 1328 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1329 1330 err = usbd_interface_count(sc->sc_udev, &niface); 1331 if (err) 1332 return err; 1333 if (ifaceidx < 0 || ifaceidx >= niface) 1334 return USBD_INVAL; 1335 1336 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1337 if (err) 1338 return err; 1339 err = usbd_endpoint_count(iface, &nendpt); 1340 if (err) 1341 return err; 1342 1343 /* change setting */ 1344 err = usbd_set_interface(iface, altno); 1345 if (err) 1346 return err; 1347 1348 err = usbd_endpoint_count(iface, &nendpt); 1349 if (err) 1350 return err; 1351 1352 ugen_clear_endpoints(sc); 1353 1354 for (endptno = 0; endptno < nendpt; endptno++) { 1355 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1356 KASSERT(ed != NULL); 1357 endpt = ed->bEndpointAddress; 1358 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1359 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1360 sce->sc = sc; 1361 sce->edesc = ed; 1362 sce->iface = iface; 1363 } 1364 return 0; 1365 } 1366 1367 /* Retrieve a complete descriptor for a certain device and index. */ 1368 Static usb_config_descriptor_t * 1369 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1370 { 1371 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1372 int len; 1373 usbd_status err; 1374 1375 if (index == USB_CURRENT_CONFIG_INDEX) { 1376 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1377 len = UGETW(tdesc->wTotalLength); 1378 if (lenp) 1379 *lenp = len; 1380 cdesc = kmem_alloc(len, KM_SLEEP); 1381 memcpy(cdesc, tdesc, len); 1382 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1383 } else { 1384 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1385 if (err) 1386 return 0; 1387 len = UGETW(cdescr.wTotalLength); 1388 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1389 if (lenp) 1390 *lenp = len; 1391 cdesc = kmem_alloc(len, KM_SLEEP); 1392 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1393 if (err) { 1394 kmem_free(cdesc, len); 1395 return 0; 1396 } 1397 } 1398 return cdesc; 1399 } 1400 1401 Static int 1402 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1403 { 1404 struct usbd_interface *iface; 1405 usbd_status err; 1406 1407 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1408 if (err) 1409 return -1; 1410 return usbd_get_interface_altindex(iface); 1411 } 1412 1413 Static int 1414 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1415 void *addr, int flag, struct lwp *l) 1416 { 1417 struct ugen_endpoint *sce; 1418 usbd_status err; 1419 struct usbd_interface *iface; 1420 struct usb_config_desc *cd; 1421 usb_config_descriptor_t *cdesc; 1422 struct usb_interface_desc *id; 1423 usb_interface_descriptor_t *idesc; 1424 struct usb_endpoint_desc *ed; 1425 usb_endpoint_descriptor_t *edesc; 1426 struct usb_alt_interface *ai; 1427 struct usb_string_desc *si; 1428 uint8_t conf, alt; 1429 int cdesclen; 1430 int error; 1431 1432 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1433 if (sc->sc_dying) 1434 return EIO; 1435 1436 switch (cmd) { 1437 case FIONBIO: 1438 /* All handled in the upper FS layer. */ 1439 return 0; 1440 case USB_SET_SHORT_XFER: 1441 if (endpt == USB_CONTROL_ENDPOINT) 1442 return EINVAL; 1443 /* This flag only affects read */ 1444 sce = &sc->sc_endpoints[endpt][IN]; 1445 if (sce == NULL || sce->pipeh == NULL) 1446 return EINVAL; 1447 if (*(int *)addr) 1448 sce->state |= UGEN_SHORT_OK; 1449 else 1450 sce->state &= ~UGEN_SHORT_OK; 1451 return 0; 1452 case USB_SET_TIMEOUT: 1453 sce = &sc->sc_endpoints[endpt][IN]; 1454 if (sce == NULL 1455 /* XXX this shouldn't happen, but the distinction between 1456 input and output pipes isn't clear enough. 1457 || sce->pipeh == NULL */ 1458 ) 1459 return EINVAL; 1460 sce->timeout = *(int *)addr; 1461 return 0; 1462 case USB_SET_BULK_RA: 1463 if (endpt == USB_CONTROL_ENDPOINT) 1464 return EINVAL; 1465 sce = &sc->sc_endpoints[endpt][IN]; 1466 if (sce == NULL || sce->pipeh == NULL) 1467 return EINVAL; 1468 edesc = sce->edesc; 1469 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1470 return EINVAL; 1471 1472 if (*(int *)addr) { 1473 /* Only turn RA on if it's currently off. */ 1474 if (sce->state & UGEN_BULK_RA) 1475 return 0; 1476 1477 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1478 /* shouldn't happen */ 1479 return EINVAL; 1480 error = usbd_create_xfer(sce->pipeh, 1481 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1482 if (error) 1483 return error; 1484 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1485 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1486 sce->fill = sce->cur = sce->ibuf; 1487 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1488 sce->ra_wb_used = 0; 1489 sce->state |= UGEN_BULK_RA; 1490 sce->state &= ~UGEN_RA_WB_STOP; 1491 /* Now start reading. */ 1492 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1493 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1494 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1495 err = usbd_transfer(sce->ra_wb_xfer); 1496 if (err != USBD_IN_PROGRESS) { 1497 sce->state &= ~UGEN_BULK_RA; 1498 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1499 sce->ibuf = NULL; 1500 usbd_destroy_xfer(sce->ra_wb_xfer); 1501 return EIO; 1502 } 1503 } else { 1504 /* Only turn RA off if it's currently on. */ 1505 if (!(sce->state & UGEN_BULK_RA)) 1506 return 0; 1507 1508 sce->state &= ~UGEN_BULK_RA; 1509 usbd_abort_pipe(sce->pipeh); 1510 usbd_destroy_xfer(sce->ra_wb_xfer); 1511 /* 1512 * XXX Discard whatever's in the buffer, but we 1513 * should keep it around and drain the buffer 1514 * instead. 1515 */ 1516 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1517 sce->ibuf = NULL; 1518 } 1519 return 0; 1520 case USB_SET_BULK_WB: 1521 if (endpt == USB_CONTROL_ENDPOINT) 1522 return EINVAL; 1523 sce = &sc->sc_endpoints[endpt][OUT]; 1524 if (sce == NULL || sce->pipeh == NULL) 1525 return EINVAL; 1526 edesc = sce->edesc; 1527 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1528 return EINVAL; 1529 1530 if (*(int *)addr) { 1531 /* Only turn WB on if it's currently off. */ 1532 if (sce->state & UGEN_BULK_WB) 1533 return 0; 1534 1535 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1536 /* shouldn't happen */ 1537 return EINVAL; 1538 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1539 0, 0, &sce->ra_wb_xfer); 1540 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1541 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1542 sce->fill = sce->cur = sce->ibuf; 1543 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1544 sce->ra_wb_used = 0; 1545 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1546 } else { 1547 /* Only turn WB off if it's currently on. */ 1548 if (!(sce->state & UGEN_BULK_WB)) 1549 return 0; 1550 1551 sce->state &= ~UGEN_BULK_WB; 1552 /* 1553 * XXX Discard whatever's in the buffer, but we 1554 * should keep it around and keep writing to 1555 * drain the buffer instead. 1556 */ 1557 usbd_abort_pipe(sce->pipeh); 1558 usbd_destroy_xfer(sce->ra_wb_xfer); 1559 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1560 sce->ibuf = NULL; 1561 } 1562 return 0; 1563 case USB_SET_BULK_RA_OPT: 1564 case USB_SET_BULK_WB_OPT: 1565 { 1566 struct usb_bulk_ra_wb_opt *opt; 1567 1568 if (endpt == USB_CONTROL_ENDPOINT) 1569 return EINVAL; 1570 opt = (struct usb_bulk_ra_wb_opt *)addr; 1571 if (cmd == USB_SET_BULK_RA_OPT) 1572 sce = &sc->sc_endpoints[endpt][IN]; 1573 else 1574 sce = &sc->sc_endpoints[endpt][OUT]; 1575 if (sce == NULL || sce->pipeh == NULL) 1576 return EINVAL; 1577 if (opt->ra_wb_buffer_size < 1 || 1578 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1579 opt->ra_wb_request_size < 1 || 1580 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1581 return EINVAL; 1582 /* 1583 * XXX These changes do not take effect until the 1584 * next time RA/WB mode is enabled but they ought to 1585 * take effect immediately. 1586 */ 1587 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1588 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1589 return 0; 1590 } 1591 default: 1592 break; 1593 } 1594 1595 if (endpt != USB_CONTROL_ENDPOINT) 1596 return EINVAL; 1597 1598 switch (cmd) { 1599 #ifdef UGEN_DEBUG 1600 case USB_SETDEBUG: 1601 ugendebug = *(int *)addr; 1602 break; 1603 #endif 1604 case USB_GET_CONFIG: 1605 err = usbd_get_config(sc->sc_udev, &conf); 1606 if (err) 1607 return EIO; 1608 *(int *)addr = conf; 1609 break; 1610 case USB_SET_CONFIG: 1611 if (!(flag & FWRITE)) 1612 return EPERM; 1613 err = ugen_set_config(sc, *(int *)addr); 1614 switch (err) { 1615 case USBD_NORMAL_COMPLETION: 1616 break; 1617 case USBD_IN_USE: 1618 return EBUSY; 1619 default: 1620 return EIO; 1621 } 1622 break; 1623 case USB_GET_ALTINTERFACE: 1624 ai = (struct usb_alt_interface *)addr; 1625 err = usbd_device2interface_handle(sc->sc_udev, 1626 ai->uai_interface_index, &iface); 1627 if (err) 1628 return EINVAL; 1629 idesc = usbd_get_interface_descriptor(iface); 1630 if (idesc == NULL) 1631 return EIO; 1632 ai->uai_alt_no = idesc->bAlternateSetting; 1633 break; 1634 case USB_SET_ALTINTERFACE: 1635 if (!(flag & FWRITE)) 1636 return EPERM; 1637 ai = (struct usb_alt_interface *)addr; 1638 err = usbd_device2interface_handle(sc->sc_udev, 1639 ai->uai_interface_index, &iface); 1640 if (err) 1641 return EINVAL; 1642 err = ugen_set_interface(sc, ai->uai_interface_index, 1643 ai->uai_alt_no); 1644 if (err) 1645 return EINVAL; 1646 break; 1647 case USB_GET_NO_ALT: 1648 ai = (struct usb_alt_interface *)addr; 1649 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1650 if (cdesc == NULL) 1651 return EINVAL; 1652 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1653 if (idesc == NULL) { 1654 kmem_free(cdesc, cdesclen); 1655 return EINVAL; 1656 } 1657 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1658 idesc->bInterfaceNumber); 1659 kmem_free(cdesc, cdesclen); 1660 break; 1661 case USB_GET_DEVICE_DESC: 1662 *(usb_device_descriptor_t *)addr = 1663 *usbd_get_device_descriptor(sc->sc_udev); 1664 break; 1665 case USB_GET_CONFIG_DESC: 1666 cd = (struct usb_config_desc *)addr; 1667 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1668 if (cdesc == NULL) 1669 return EINVAL; 1670 cd->ucd_desc = *cdesc; 1671 kmem_free(cdesc, cdesclen); 1672 break; 1673 case USB_GET_INTERFACE_DESC: 1674 id = (struct usb_interface_desc *)addr; 1675 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1676 if (cdesc == NULL) 1677 return EINVAL; 1678 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1679 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1680 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1681 else 1682 alt = id->uid_alt_index; 1683 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1684 if (idesc == NULL) { 1685 kmem_free(cdesc, cdesclen); 1686 return EINVAL; 1687 } 1688 id->uid_desc = *idesc; 1689 kmem_free(cdesc, cdesclen); 1690 break; 1691 case USB_GET_ENDPOINT_DESC: 1692 ed = (struct usb_endpoint_desc *)addr; 1693 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1694 if (cdesc == NULL) 1695 return EINVAL; 1696 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1697 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1698 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1699 else 1700 alt = ed->ued_alt_index; 1701 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1702 alt, ed->ued_endpoint_index); 1703 if (edesc == NULL) { 1704 kmem_free(cdesc, cdesclen); 1705 return EINVAL; 1706 } 1707 ed->ued_desc = *edesc; 1708 kmem_free(cdesc, cdesclen); 1709 break; 1710 case USB_GET_FULL_DESC: 1711 { 1712 int len; 1713 struct iovec iov; 1714 struct uio uio; 1715 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1716 1717 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1718 if (cdesc == NULL) 1719 return EINVAL; 1720 len = cdesclen; 1721 if (len > fd->ufd_size) 1722 len = fd->ufd_size; 1723 iov.iov_base = (void *)fd->ufd_data; 1724 iov.iov_len = len; 1725 uio.uio_iov = &iov; 1726 uio.uio_iovcnt = 1; 1727 uio.uio_resid = len; 1728 uio.uio_offset = 0; 1729 uio.uio_rw = UIO_READ; 1730 uio.uio_vmspace = l->l_proc->p_vmspace; 1731 error = uiomove((void *)cdesc, len, &uio); 1732 kmem_free(cdesc, cdesclen); 1733 return error; 1734 } 1735 case USB_GET_STRING_DESC: { 1736 int len; 1737 si = (struct usb_string_desc *)addr; 1738 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1739 si->usd_language_id, &si->usd_desc, &len); 1740 if (err) 1741 return EINVAL; 1742 break; 1743 } 1744 case USB_DO_REQUEST: 1745 { 1746 struct usb_ctl_request *ur = (void *)addr; 1747 int len = UGETW(ur->ucr_request.wLength); 1748 struct iovec iov; 1749 struct uio uio; 1750 void *ptr = 0; 1751 usbd_status xerr; 1752 1753 error = 0; 1754 1755 if (!(flag & FWRITE)) 1756 return EPERM; 1757 /* Avoid requests that would damage the bus integrity. */ 1758 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1759 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1760 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1761 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1762 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1763 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1764 return EINVAL; 1765 1766 if (len < 0 || len > 32767) 1767 return EINVAL; 1768 if (len != 0) { 1769 iov.iov_base = (void *)ur->ucr_data; 1770 iov.iov_len = len; 1771 uio.uio_iov = &iov; 1772 uio.uio_iovcnt = 1; 1773 uio.uio_resid = len; 1774 uio.uio_offset = 0; 1775 uio.uio_rw = 1776 ur->ucr_request.bmRequestType & UT_READ ? 1777 UIO_READ : UIO_WRITE; 1778 uio.uio_vmspace = l->l_proc->p_vmspace; 1779 ptr = kmem_alloc(len, KM_SLEEP); 1780 if (uio.uio_rw == UIO_WRITE) { 1781 error = uiomove(ptr, len, &uio); 1782 if (error) 1783 goto ret; 1784 } 1785 } 1786 sce = &sc->sc_endpoints[endpt][IN]; 1787 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1788 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1789 if (xerr) { 1790 error = EIO; 1791 goto ret; 1792 } 1793 if (len != 0) { 1794 if (uio.uio_rw == UIO_READ) { 1795 size_t alen = min(len, ur->ucr_actlen); 1796 error = uiomove(ptr, alen, &uio); 1797 if (error) 1798 goto ret; 1799 } 1800 } 1801 ret: 1802 if (ptr) 1803 kmem_free(ptr, len); 1804 return error; 1805 } 1806 case USB_GET_DEVICEINFO: 1807 usbd_fill_deviceinfo(sc->sc_udev, 1808 (struct usb_device_info *)addr, 0); 1809 break; 1810 #ifdef COMPAT_30 1811 case USB_GET_DEVICEINFO_OLD: 1812 usbd_fill_deviceinfo_old(sc->sc_udev, 1813 (struct usb_device_info_old *)addr, 0); 1814 1815 break; 1816 #endif 1817 default: 1818 return EINVAL; 1819 } 1820 return 0; 1821 } 1822 1823 int 1824 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1825 { 1826 int endpt = UGENENDPOINT(dev); 1827 struct ugen_softc *sc; 1828 int error; 1829 1830 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1831 if (sc == NULL) 1832 return ENXIO; 1833 1834 sc->sc_refcnt++; 1835 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1836 if (--sc->sc_refcnt < 0) 1837 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1838 return error; 1839 } 1840 1841 int 1842 ugenpoll(dev_t dev, int events, struct lwp *l) 1843 { 1844 struct ugen_softc *sc; 1845 struct ugen_endpoint *sce_in, *sce_out; 1846 int revents = 0; 1847 1848 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1849 if (sc == NULL) 1850 return ENXIO; 1851 1852 if (sc->sc_dying) 1853 return POLLHUP; 1854 1855 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1856 return ENODEV; 1857 1858 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1859 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1860 if (sce_in == NULL && sce_out == NULL) 1861 return POLLERR; 1862 #ifdef DIAGNOSTIC 1863 if (!sce_in->edesc && !sce_out->edesc) { 1864 printf("ugenpoll: no edesc\n"); 1865 return POLLERR; 1866 } 1867 /* It's possible to have only one pipe open. */ 1868 if (!sce_in->pipeh && !sce_out->pipeh) { 1869 printf("ugenpoll: no pipe\n"); 1870 return POLLERR; 1871 } 1872 #endif 1873 1874 mutex_enter(&sc->sc_lock); 1875 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1876 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1877 case UE_INTERRUPT: 1878 if (sce_in->q.c_cc > 0) 1879 revents |= events & (POLLIN | POLLRDNORM); 1880 else 1881 selrecord(l, &sce_in->rsel); 1882 break; 1883 case UE_ISOCHRONOUS: 1884 if (sce_in->cur != sce_in->fill) 1885 revents |= events & (POLLIN | POLLRDNORM); 1886 else 1887 selrecord(l, &sce_in->rsel); 1888 break; 1889 case UE_BULK: 1890 if (sce_in->state & UGEN_BULK_RA) { 1891 if (sce_in->ra_wb_used > 0) 1892 revents |= events & 1893 (POLLIN | POLLRDNORM); 1894 else 1895 selrecord(l, &sce_in->rsel); 1896 break; 1897 } 1898 /* 1899 * We have no easy way of determining if a read will 1900 * yield any data or a write will happen. 1901 * Pretend they will. 1902 */ 1903 revents |= events & (POLLIN | POLLRDNORM); 1904 break; 1905 default: 1906 break; 1907 } 1908 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1909 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1910 case UE_INTERRUPT: 1911 case UE_ISOCHRONOUS: 1912 /* XXX unimplemented */ 1913 break; 1914 case UE_BULK: 1915 if (sce_out->state & UGEN_BULK_WB) { 1916 if (sce_out->ra_wb_used < 1917 sce_out->limit - sce_out->ibuf) 1918 revents |= events & 1919 (POLLOUT | POLLWRNORM); 1920 else 1921 selrecord(l, &sce_out->rsel); 1922 break; 1923 } 1924 /* 1925 * We have no easy way of determining if a read will 1926 * yield any data or a write will happen. 1927 * Pretend they will. 1928 */ 1929 revents |= events & (POLLOUT | POLLWRNORM); 1930 break; 1931 default: 1932 break; 1933 } 1934 1935 mutex_exit(&sc->sc_lock); 1936 1937 return revents; 1938 } 1939 1940 static void 1941 filt_ugenrdetach(struct knote *kn) 1942 { 1943 struct ugen_endpoint *sce = kn->kn_hook; 1944 struct ugen_softc *sc = sce->sc; 1945 1946 mutex_enter(&sc->sc_lock); 1947 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1948 mutex_exit(&sc->sc_lock); 1949 } 1950 1951 static int 1952 filt_ugenread_intr(struct knote *kn, long hint) 1953 { 1954 struct ugen_endpoint *sce = kn->kn_hook; 1955 1956 kn->kn_data = sce->q.c_cc; 1957 return kn->kn_data > 0; 1958 } 1959 1960 static int 1961 filt_ugenread_isoc(struct knote *kn, long hint) 1962 { 1963 struct ugen_endpoint *sce = kn->kn_hook; 1964 1965 if (sce->cur == sce->fill) 1966 return 0; 1967 1968 if (sce->cur < sce->fill) 1969 kn->kn_data = sce->fill - sce->cur; 1970 else 1971 kn->kn_data = (sce->limit - sce->cur) + 1972 (sce->fill - sce->ibuf); 1973 1974 return 1; 1975 } 1976 1977 static int 1978 filt_ugenread_bulk(struct knote *kn, long hint) 1979 { 1980 struct ugen_endpoint *sce = kn->kn_hook; 1981 1982 if (!(sce->state & UGEN_BULK_RA)) 1983 /* 1984 * We have no easy way of determining if a read will 1985 * yield any data or a write will happen. 1986 * So, emulate "seltrue". 1987 */ 1988 return filt_seltrue(kn, hint); 1989 1990 if (sce->ra_wb_used == 0) 1991 return 0; 1992 1993 kn->kn_data = sce->ra_wb_used; 1994 1995 return 1; 1996 } 1997 1998 static int 1999 filt_ugenwrite_bulk(struct knote *kn, long hint) 2000 { 2001 struct ugen_endpoint *sce = kn->kn_hook; 2002 2003 if (!(sce->state & UGEN_BULK_WB)) 2004 /* 2005 * We have no easy way of determining if a read will 2006 * yield any data or a write will happen. 2007 * So, emulate "seltrue". 2008 */ 2009 return filt_seltrue(kn, hint); 2010 2011 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2012 return 0; 2013 2014 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2015 2016 return 1; 2017 } 2018 2019 static const struct filterops ugenread_intr_filtops = 2020 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2021 2022 static const struct filterops ugenread_isoc_filtops = 2023 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2024 2025 static const struct filterops ugenread_bulk_filtops = 2026 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2027 2028 static const struct filterops ugenwrite_bulk_filtops = 2029 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2030 2031 int 2032 ugenkqfilter(dev_t dev, struct knote *kn) 2033 { 2034 struct ugen_softc *sc; 2035 struct ugen_endpoint *sce; 2036 struct klist *klist; 2037 2038 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2039 if (sc == NULL) 2040 return ENXIO; 2041 2042 if (sc->sc_dying) 2043 return ENXIO; 2044 2045 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2046 return ENODEV; 2047 2048 switch (kn->kn_filter) { 2049 case EVFILT_READ: 2050 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2051 if (sce == NULL) 2052 return EINVAL; 2053 2054 klist = &sce->rsel.sel_klist; 2055 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2056 case UE_INTERRUPT: 2057 kn->kn_fop = &ugenread_intr_filtops; 2058 break; 2059 case UE_ISOCHRONOUS: 2060 kn->kn_fop = &ugenread_isoc_filtops; 2061 break; 2062 case UE_BULK: 2063 kn->kn_fop = &ugenread_bulk_filtops; 2064 break; 2065 default: 2066 return EINVAL; 2067 } 2068 break; 2069 2070 case EVFILT_WRITE: 2071 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2072 if (sce == NULL) 2073 return EINVAL; 2074 2075 klist = &sce->rsel.sel_klist; 2076 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2077 case UE_INTERRUPT: 2078 case UE_ISOCHRONOUS: 2079 /* XXX poll doesn't support this */ 2080 return EINVAL; 2081 2082 case UE_BULK: 2083 kn->kn_fop = &ugenwrite_bulk_filtops; 2084 break; 2085 default: 2086 return EINVAL; 2087 } 2088 break; 2089 2090 default: 2091 return EINVAL; 2092 } 2093 2094 kn->kn_hook = sce; 2095 2096 mutex_enter(&sc->sc_lock); 2097 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2098 mutex_exit(&sc->sc_lock); 2099 2100 return 0; 2101 } 2102
Indexes created Sun Oct 19 02:09:48 GMT 2025