ugen.c revision 1.142
1 /* $NetBSD: ugen.c,v 1.142 2019/01/27 02:08:42 pgoyette 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 1.142 2019/01/27 02:08:42 pgoyette 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 #include <sys/compat_stub.h> 61 62 #include <dev/usb/usb.h> 63 #include <dev/usb/usbdi.h> 64 #include <dev/usb/usbdi_util.h> 65 66 #ifdef UGEN_DEBUG 67 #define DPRINTF(x) if (ugendebug) printf x 68 #define DPRINTFN(n,x) if (ugendebug>(n)) printf x 69 int ugendebug = 0; 70 #else 71 #define DPRINTF(x) 72 #define DPRINTFN(n,x) 73 #endif 74 75 #define UGEN_CHUNK 128 /* chunk size for read */ 76 #define UGEN_IBSIZE 1020 /* buffer size */ 77 #define UGEN_BBSIZE 1024 78 79 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 80 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 81 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 82 83 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 84 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 85 86 struct isoreq { 87 struct ugen_endpoint *sce; 88 struct usbd_xfer *xfer; 89 void *dmabuf; 90 uint16_t sizes[UGEN_NISORFRMS]; 91 }; 92 93 struct ugen_endpoint { 94 struct ugen_softc *sc; 95 usb_endpoint_descriptor_t *edesc; 96 struct usbd_interface *iface; 97 int state; 98 #define UGEN_ASLP 0x02 /* waiting for data */ 99 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 100 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 101 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 102 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 103 struct usbd_pipe *pipeh; 104 struct clist q; 105 u_char *ibuf; /* start of buffer (circular for isoc) */ 106 u_char *fill; /* location for input (isoc) */ 107 u_char *limit; /* end of circular buffer (isoc) */ 108 u_char *cur; /* current read location (isoc) */ 109 uint32_t timeout; 110 uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 111 uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 112 uint32_t ra_wb_used; /* how much is in buffer */ 113 uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 114 struct usbd_xfer *ra_wb_xfer; 115 struct isoreq isoreqs[UGEN_NISOREQS]; 116 /* Keep these last; we don't overwrite them in ugen_set_config() */ 117 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 118 struct selinfo rsel; 119 kcondvar_t cv; 120 }; 121 122 struct ugen_softc { 123 device_t sc_dev; /* base device */ 124 struct usbd_device *sc_udev; 125 126 kmutex_t sc_lock; 127 kcondvar_t sc_detach_cv; 128 129 char sc_is_open[USB_MAX_ENDPOINTS]; 130 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 131 #define OUT 0 132 #define IN 1 133 134 int sc_refcnt; 135 char sc_buffer[UGEN_BBSIZE]; 136 u_char sc_dying; 137 }; 138 139 dev_type_open(ugenopen); 140 dev_type_close(ugenclose); 141 dev_type_read(ugenread); 142 dev_type_write(ugenwrite); 143 dev_type_ioctl(ugenioctl); 144 dev_type_poll(ugenpoll); 145 dev_type_kqfilter(ugenkqfilter); 146 147 const struct cdevsw ugen_cdevsw = { 148 .d_open = ugenopen, 149 .d_close = ugenclose, 150 .d_read = ugenread, 151 .d_write = ugenwrite, 152 .d_ioctl = ugenioctl, 153 .d_stop = nostop, 154 .d_tty = notty, 155 .d_poll = ugenpoll, 156 .d_mmap = nommap, 157 .d_kqfilter = ugenkqfilter, 158 .d_discard = nodiscard, 159 .d_flag = D_OTHER, 160 }; 161 162 Static void ugenintr(struct usbd_xfer *, void *, 163 usbd_status); 164 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 165 usbd_status); 166 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 167 usbd_status); 168 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 169 usbd_status); 170 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 171 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 172 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 173 void *, int, struct lwp *); 174 Static int ugen_set_config(struct ugen_softc *, int, int); 175 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 176 int, int *); 177 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 178 Static int ugen_get_alt_index(struct ugen_softc *, int); 179 Static void ugen_clear_endpoints(struct ugen_softc *); 180 181 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 182 #define UGENENDPOINT(n) (minor(n) & 0xf) 183 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 184 185 int ugenif_match(device_t, cfdata_t, void *); 186 void ugenif_attach(device_t, device_t, void *); 187 int ugen_match(device_t, cfdata_t, void *); 188 void ugen_attach(device_t, device_t, void *); 189 int ugen_detach(device_t, int); 190 int ugen_activate(device_t, enum devact); 191 extern struct cfdriver ugen_cd; 192 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 193 ugen_attach, ugen_detach, ugen_activate); 194 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 195 ugenif_attach, ugen_detach, ugen_activate); 196 197 /* toggle to control attach priority. -1 means "let autoconf decide" */ 198 int ugen_override = -1; 199 200 int 201 ugen_match(device_t parent, cfdata_t match, void *aux) 202 { 203 struct usb_attach_arg *uaa = aux; 204 int override; 205 206 if (ugen_override != -1) 207 override = ugen_override; 208 else 209 override = match->cf_flags & 1; 210 211 if (override) 212 return UMATCH_HIGHEST; 213 else if (uaa->uaa_usegeneric) 214 return UMATCH_GENERIC; 215 else 216 return UMATCH_NONE; 217 } 218 219 int 220 ugenif_match(device_t parent, cfdata_t match, void *aux) 221 { 222 /* Assume that they knew what they configured! (see ugenif(4)) */ 223 return UMATCH_HIGHEST; 224 } 225 226 void 227 ugen_attach(device_t parent, device_t self, void *aux) 228 { 229 struct usb_attach_arg *uaa = aux; 230 struct usbif_attach_arg uiaa; 231 232 memset(&uiaa, 0, sizeof uiaa); 233 uiaa.uiaa_port = uaa->uaa_port; 234 uiaa.uiaa_vendor = uaa->uaa_vendor; 235 uiaa.uiaa_product = uaa->uaa_product; 236 uiaa.uiaa_release = uaa->uaa_release; 237 uiaa.uiaa_device = uaa->uaa_device; 238 uiaa.uiaa_configno = -1; 239 uiaa.uiaa_ifaceno = -1; 240 241 ugenif_attach(parent, self, &uiaa); 242 } 243 244 void 245 ugenif_attach(device_t parent, device_t self, void *aux) 246 { 247 struct ugen_softc *sc = device_private(self); 248 struct usbif_attach_arg *uiaa = aux; 249 struct usbd_device *udev; 250 char *devinfop; 251 usbd_status err; 252 int i, dir, conf; 253 254 aprint_naive("\n"); 255 aprint_normal("\n"); 256 257 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 258 cv_init(&sc->sc_detach_cv, "ugendet"); 259 260 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 261 aprint_normal_dev(self, "%s\n", devinfop); 262 usbd_devinfo_free(devinfop); 263 264 sc->sc_dev = self; 265 sc->sc_udev = udev = uiaa->uiaa_device; 266 267 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 268 for (dir = OUT; dir <= IN; dir++) { 269 struct ugen_endpoint *sce; 270 271 sce = &sc->sc_endpoints[i][dir]; 272 selinit(&sce->rsel); 273 cv_init(&sce->cv, "ugensce"); 274 } 275 } 276 277 if (uiaa->uiaa_ifaceno < 0) { 278 /* 279 * If we attach the whole device, 280 * set configuration index 0, the default one. 281 */ 282 err = usbd_set_config_index(udev, 0, 0); 283 if (err) { 284 aprint_error_dev(self, 285 "setting configuration index 0 failed\n"); 286 sc->sc_dying = 1; 287 return; 288 } 289 } 290 291 /* Get current configuration */ 292 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 293 294 /* Set up all the local state for this configuration. */ 295 err = ugen_set_config(sc, conf, uiaa->uiaa_ifaceno < 0); 296 if (err) { 297 aprint_error_dev(self, "setting configuration %d failed\n", 298 conf); 299 sc->sc_dying = 1; 300 return; 301 } 302 303 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 304 305 if (!pmf_device_register(self, NULL, NULL)) 306 aprint_error_dev(self, "couldn't establish power handler\n"); 307 308 } 309 310 Static void 311 ugen_clear_endpoints(struct ugen_softc *sc) 312 { 313 314 /* Clear out the old info, but leave the selinfo and cv initialised. */ 315 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 316 for (int dir = OUT; dir <= IN; dir++) { 317 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 318 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 319 } 320 } 321 } 322 323 Static int 324 ugen_set_config(struct ugen_softc *sc, int configno, int chkopen) 325 { 326 struct usbd_device *dev = sc->sc_udev; 327 usb_config_descriptor_t *cdesc; 328 struct usbd_interface *iface; 329 usb_endpoint_descriptor_t *ed; 330 struct ugen_endpoint *sce; 331 uint8_t niface, nendpt; 332 int ifaceno, endptno, endpt; 333 usbd_status err; 334 int dir; 335 336 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 337 device_xname(sc->sc_dev), configno, sc)); 338 339 if (chkopen) { 340 /* 341 * We start at 1, not 0, because we don't care whether the 342 * control endpoint is open or not. It is always present. 343 */ 344 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 345 if (sc->sc_is_open[endptno]) { 346 DPRINTFN(1, 347 ("ugen_set_config: %s - endpoint %d is open\n", 348 device_xname(sc->sc_dev), endptno)); 349 return USBD_IN_USE; 350 } 351 } 352 353 /* Avoid setting the current value. */ 354 cdesc = usbd_get_config_descriptor(dev); 355 if (!cdesc || cdesc->bConfigurationValue != configno) { 356 err = usbd_set_config_no(dev, configno, 1); 357 if (err) 358 return err; 359 } 360 361 ugen_clear_endpoints(sc); 362 363 err = usbd_interface_count(dev, &niface); 364 if (err) 365 return err; 366 367 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 368 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 369 err = usbd_device2interface_handle(dev, ifaceno, &iface); 370 if (err) 371 return err; 372 err = usbd_endpoint_count(iface, &nendpt); 373 if (err) 374 return err; 375 for (endptno = 0; endptno < nendpt; endptno++) { 376 ed = usbd_interface2endpoint_descriptor(iface,endptno); 377 KASSERT(ed != NULL); 378 endpt = ed->bEndpointAddress; 379 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 380 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 381 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 382 "(%d,%d), sce=%p\n", 383 endptno, endpt, UE_GET_ADDR(endpt), 384 UE_GET_DIR(endpt), sce)); 385 sce->sc = sc; 386 sce->edesc = ed; 387 sce->iface = iface; 388 } 389 } 390 return USBD_NORMAL_COMPLETION; 391 } 392 393 int 394 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 395 { 396 struct ugen_softc *sc; 397 int unit = UGENUNIT(dev); 398 int endpt = UGENENDPOINT(dev); 399 usb_endpoint_descriptor_t *edesc; 400 struct ugen_endpoint *sce; 401 int dir, isize; 402 usbd_status err; 403 struct usbd_xfer *xfer; 404 int i, j; 405 406 sc = device_lookup_private(&ugen_cd, unit); 407 if (sc == NULL || sc->sc_dying) 408 return ENXIO; 409 410 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 411 flag, mode, unit, endpt)); 412 413 /* The control endpoint allows multiple opens. */ 414 if (endpt == USB_CONTROL_ENDPOINT) { 415 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 416 return 0; 417 } 418 419 if (sc->sc_is_open[endpt]) 420 return EBUSY; 421 422 /* Make sure there are pipes for all directions. */ 423 for (dir = OUT; dir <= IN; dir++) { 424 if (flag & (dir == OUT ? FWRITE : FREAD)) { 425 sce = &sc->sc_endpoints[endpt][dir]; 426 if (sce->edesc == NULL) 427 return ENXIO; 428 } 429 } 430 431 /* Actually open the pipes. */ 432 /* XXX Should back out properly if it fails. */ 433 for (dir = OUT; dir <= IN; dir++) { 434 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 435 continue; 436 sce = &sc->sc_endpoints[endpt][dir]; 437 sce->state = 0; 438 sce->timeout = USBD_NO_TIMEOUT; 439 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 440 sc, endpt, dir, sce)); 441 edesc = sce->edesc; 442 switch (edesc->bmAttributes & UE_XFERTYPE) { 443 case UE_INTERRUPT: 444 if (dir == OUT) { 445 err = usbd_open_pipe(sce->iface, 446 edesc->bEndpointAddress, 0, &sce->pipeh); 447 if (err) 448 return EIO; 449 break; 450 } 451 isize = UGETW(edesc->wMaxPacketSize); 452 if (isize == 0) /* shouldn't happen */ 453 return EINVAL; 454 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 455 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 456 endpt, isize)); 457 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 458 kmem_free(sce->ibuf, isize); 459 sce->ibuf = NULL; 460 return ENOMEM; 461 } 462 err = usbd_open_pipe_intr(sce->iface, 463 edesc->bEndpointAddress, 464 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 465 sce->ibuf, isize, ugenintr, 466 USBD_DEFAULT_INTERVAL); 467 if (err) { 468 clfree(&sce->q); 469 kmem_free(sce->ibuf, isize); 470 sce->ibuf = NULL; 471 return EIO; 472 } 473 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 474 break; 475 case UE_BULK: 476 err = usbd_open_pipe(sce->iface, 477 edesc->bEndpointAddress, 0, &sce->pipeh); 478 if (err) 479 return EIO; 480 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 481 /* 482 * Use request size for non-RA/WB transfers 483 * as the default. 484 */ 485 sce->ra_wb_reqsize = UGEN_BBSIZE; 486 break; 487 case UE_ISOCHRONOUS: 488 if (dir == OUT) 489 return EINVAL; 490 isize = UGETW(edesc->wMaxPacketSize); 491 if (isize == 0) /* shouldn't happen */ 492 return EINVAL; 493 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 494 KM_SLEEP); 495 sce->cur = sce->fill = sce->ibuf; 496 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 497 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 498 endpt, isize)); 499 err = usbd_open_pipe(sce->iface, 500 edesc->bEndpointAddress, 0, &sce->pipeh); 501 if (err) { 502 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 503 sce->ibuf = NULL; 504 return EIO; 505 } 506 for (i = 0; i < UGEN_NISOREQS; ++i) { 507 sce->isoreqs[i].sce = sce; 508 err = usbd_create_xfer(sce->pipeh, 509 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 510 &xfer); 511 if (err) 512 goto bad; 513 sce->isoreqs[i].xfer = xfer; 514 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 515 for (j = 0; j < UGEN_NISORFRMS; ++j) 516 sce->isoreqs[i].sizes[j] = isize; 517 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 518 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 519 ugen_isoc_rintr); 520 (void)usbd_transfer(xfer); 521 } 522 DPRINTFN(5, ("ugenopen: isoc open done\n")); 523 break; 524 bad: 525 while (--i >= 0) /* implicit buffer free */ 526 usbd_destroy_xfer(sce->isoreqs[i].xfer); 527 usbd_close_pipe(sce->pipeh); 528 sce->pipeh = NULL; 529 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 530 sce->ibuf = NULL; 531 return ENOMEM; 532 case UE_CONTROL: 533 sce->timeout = USBD_DEFAULT_TIMEOUT; 534 return EINVAL; 535 } 536 } 537 sc->sc_is_open[endpt] = 1; 538 return 0; 539 } 540 541 int 542 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 543 { 544 int endpt = UGENENDPOINT(dev); 545 struct ugen_softc *sc; 546 struct ugen_endpoint *sce; 547 int dir; 548 int i; 549 550 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 551 if (sc == NULL || sc->sc_dying) 552 return ENXIO; 553 554 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 555 flag, mode, UGENUNIT(dev), endpt)); 556 557 #ifdef DIAGNOSTIC 558 if (!sc->sc_is_open[endpt]) { 559 printf("ugenclose: not open\n"); 560 return EINVAL; 561 } 562 #endif 563 564 if (endpt == USB_CONTROL_ENDPOINT) { 565 DPRINTFN(5, ("ugenclose: close control\n")); 566 sc->sc_is_open[endpt] = 0; 567 return 0; 568 } 569 570 for (dir = OUT; dir <= IN; dir++) { 571 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 572 continue; 573 sce = &sc->sc_endpoints[endpt][dir]; 574 if (sce->pipeh == NULL) 575 continue; 576 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 577 endpt, dir, sce)); 578 579 usbd_abort_pipe(sce->pipeh); 580 581 int isize = UGETW(sce->edesc->wMaxPacketSize); 582 int msize = 0; 583 584 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 585 case UE_INTERRUPT: 586 ndflush(&sce->q, sce->q.c_cc); 587 clfree(&sce->q); 588 msize = isize; 589 break; 590 case UE_ISOCHRONOUS: 591 for (i = 0; i < UGEN_NISOREQS; ++i) 592 usbd_destroy_xfer(sce->isoreqs[i].xfer); 593 msize = isize * UGEN_NISOFRAMES; 594 break; 595 case UE_BULK: 596 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 597 usbd_destroy_xfer(sce->ra_wb_xfer); 598 msize = sce->ra_wb_bufsize; 599 } 600 break; 601 default: 602 break; 603 } 604 usbd_close_pipe(sce->pipeh); 605 sce->pipeh = NULL; 606 if (sce->ibuf != NULL) { 607 kmem_free(sce->ibuf, msize); 608 sce->ibuf = NULL; 609 } 610 } 611 sc->sc_is_open[endpt] = 0; 612 613 return 0; 614 } 615 616 Static int 617 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 618 { 619 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 620 uint32_t n, tn; 621 struct usbd_xfer *xfer; 622 usbd_status err; 623 int error = 0; 624 625 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 626 627 if (endpt == USB_CONTROL_ENDPOINT) 628 return ENODEV; 629 630 #ifdef DIAGNOSTIC 631 if (sce->edesc == NULL) { 632 printf("ugenread: no edesc\n"); 633 return EIO; 634 } 635 if (sce->pipeh == NULL) { 636 printf("ugenread: no pipe\n"); 637 return EIO; 638 } 639 #endif 640 641 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 642 case UE_INTERRUPT: 643 /* Block until activity occurred. */ 644 mutex_enter(&sc->sc_lock); 645 while (sce->q.c_cc == 0) { 646 if (flag & IO_NDELAY) { 647 mutex_exit(&sc->sc_lock); 648 return EWOULDBLOCK; 649 } 650 sce->state |= UGEN_ASLP; 651 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 652 /* "ugenri" */ 653 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 654 mstohz(sce->timeout)); 655 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 656 if (sc->sc_dying) 657 error = EIO; 658 if (error) { 659 sce->state &= ~UGEN_ASLP; 660 break; 661 } 662 } 663 mutex_exit(&sc->sc_lock); 664 665 /* Transfer as many chunks as possible. */ 666 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 667 n = uimin(sce->q.c_cc, uio->uio_resid); 668 if (n > sizeof(sc->sc_buffer)) 669 n = sizeof(sc->sc_buffer); 670 671 /* Remove a small chunk from the input queue. */ 672 q_to_b(&sce->q, sc->sc_buffer, n); 673 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 674 675 /* Copy the data to the user process. */ 676 error = uiomove(sc->sc_buffer, n, uio); 677 if (error) 678 break; 679 } 680 break; 681 case UE_BULK: 682 if (sce->state & UGEN_BULK_RA) { 683 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 684 uio->uio_resid, sce->ra_wb_used)); 685 xfer = sce->ra_wb_xfer; 686 687 mutex_enter(&sc->sc_lock); 688 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 689 mutex_exit(&sc->sc_lock); 690 return EWOULDBLOCK; 691 } 692 while (uio->uio_resid > 0 && !error) { 693 while (sce->ra_wb_used == 0) { 694 sce->state |= UGEN_ASLP; 695 DPRINTFN(5, 696 ("ugenread: sleep on %p\n", 697 sce)); 698 /* "ugenrb" */ 699 error = cv_timedwait_sig(&sce->cv, 700 &sc->sc_lock, mstohz(sce->timeout)); 701 DPRINTFN(5, 702 ("ugenread: woke, error=%d\n", 703 error)); 704 if (sc->sc_dying) 705 error = EIO; 706 if (error) { 707 sce->state &= ~UGEN_ASLP; 708 break; 709 } 710 } 711 712 /* Copy data to the process. */ 713 while (uio->uio_resid > 0 714 && sce->ra_wb_used > 0) { 715 n = uimin(uio->uio_resid, 716 sce->ra_wb_used); 717 n = uimin(n, sce->limit - sce->cur); 718 error = uiomove(sce->cur, n, uio); 719 if (error) 720 break; 721 sce->cur += n; 722 sce->ra_wb_used -= n; 723 if (sce->cur == sce->limit) 724 sce->cur = sce->ibuf; 725 } 726 727 /* 728 * If the transfers stopped because the 729 * buffer was full, restart them. 730 */ 731 if (sce->state & UGEN_RA_WB_STOP && 732 sce->ra_wb_used < sce->limit - sce->ibuf) { 733 n = (sce->limit - sce->ibuf) 734 - sce->ra_wb_used; 735 usbd_setup_xfer(xfer, sce, NULL, 736 uimin(n, sce->ra_wb_xferlen), 737 0, USBD_NO_TIMEOUT, 738 ugen_bulkra_intr); 739 sce->state &= ~UGEN_RA_WB_STOP; 740 err = usbd_transfer(xfer); 741 if (err != USBD_IN_PROGRESS) 742 /* 743 * The transfer has not been 744 * queued. Setting STOP 745 * will make us try 746 * again at the next read. 747 */ 748 sce->state |= UGEN_RA_WB_STOP; 749 } 750 } 751 mutex_exit(&sc->sc_lock); 752 break; 753 } 754 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 755 0, 0, &xfer); 756 if (error) 757 return error; 758 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 759 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 760 tn = n; 761 err = usbd_bulk_transfer(xfer, sce->pipeh, 762 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 763 sce->timeout, sc->sc_buffer, &tn); 764 if (err) { 765 if (err == USBD_INTERRUPTED) 766 error = EINTR; 767 else if (err == USBD_TIMEOUT) 768 error = ETIMEDOUT; 769 else 770 error = EIO; 771 break; 772 } 773 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 774 error = uiomove(sc->sc_buffer, tn, uio); 775 if (error || tn < n) 776 break; 777 } 778 usbd_destroy_xfer(xfer); 779 break; 780 case UE_ISOCHRONOUS: 781 mutex_enter(&sc->sc_lock); 782 while (sce->cur == sce->fill) { 783 if (flag & IO_NDELAY) { 784 mutex_exit(&sc->sc_lock); 785 return EWOULDBLOCK; 786 } 787 sce->state |= UGEN_ASLP; 788 /* "ugenri" */ 789 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 790 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 791 mstohz(sce->timeout)); 792 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 793 if (sc->sc_dying) 794 error = EIO; 795 if (error) { 796 sce->state &= ~UGEN_ASLP; 797 break; 798 } 799 } 800 801 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 802 if(sce->fill > sce->cur) 803 n = uimin(sce->fill - sce->cur, uio->uio_resid); 804 else 805 n = uimin(sce->limit - sce->cur, uio->uio_resid); 806 807 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 808 809 /* Copy the data to the user process. */ 810 error = uiomove(sce->cur, n, uio); 811 if (error) 812 break; 813 sce->cur += n; 814 if (sce->cur >= sce->limit) 815 sce->cur = sce->ibuf; 816 } 817 mutex_exit(&sc->sc_lock); 818 break; 819 820 821 default: 822 return ENXIO; 823 } 824 return error; 825 } 826 827 int 828 ugenread(dev_t dev, struct uio *uio, int flag) 829 { 830 int endpt = UGENENDPOINT(dev); 831 struct ugen_softc *sc; 832 int error; 833 834 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 835 if (sc == NULL || sc->sc_dying) 836 return ENXIO; 837 838 mutex_enter(&sc->sc_lock); 839 sc->sc_refcnt++; 840 mutex_exit(&sc->sc_lock); 841 842 error = ugen_do_read(sc, endpt, uio, flag); 843 844 mutex_enter(&sc->sc_lock); 845 if (--sc->sc_refcnt < 0) 846 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 847 mutex_exit(&sc->sc_lock); 848 849 return error; 850 } 851 852 Static int 853 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 854 int flag) 855 { 856 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 857 uint32_t n; 858 int error = 0; 859 uint32_t tn; 860 char *dbuf; 861 struct usbd_xfer *xfer; 862 usbd_status err; 863 864 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 865 866 if (endpt == USB_CONTROL_ENDPOINT) 867 return ENODEV; 868 869 #ifdef DIAGNOSTIC 870 if (sce->edesc == NULL) { 871 printf("ugenwrite: no edesc\n"); 872 return EIO; 873 } 874 if (sce->pipeh == NULL) { 875 printf("ugenwrite: no pipe\n"); 876 return EIO; 877 } 878 #endif 879 880 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 881 case UE_BULK: 882 if (sce->state & UGEN_BULK_WB) { 883 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 884 uio->uio_resid, sce->ra_wb_used)); 885 xfer = sce->ra_wb_xfer; 886 887 mutex_enter(&sc->sc_lock); 888 if (sce->ra_wb_used == sce->limit - sce->ibuf && 889 flag & IO_NDELAY) { 890 mutex_exit(&sc->sc_lock); 891 return EWOULDBLOCK; 892 } 893 while (uio->uio_resid > 0 && !error) { 894 while (sce->ra_wb_used == 895 sce->limit - sce->ibuf) { 896 sce->state |= UGEN_ASLP; 897 DPRINTFN(5, 898 ("ugenwrite: sleep on %p\n", 899 sce)); 900 /* "ugenwb" */ 901 error = cv_timedwait_sig(&sce->cv, 902 &sc->sc_lock, mstohz(sce->timeout)); 903 DPRINTFN(5, 904 ("ugenwrite: woke, error=%d\n", 905 error)); 906 if (sc->sc_dying) 907 error = EIO; 908 if (error) { 909 sce->state &= ~UGEN_ASLP; 910 break; 911 } 912 } 913 914 /* Copy data from the process. */ 915 while (uio->uio_resid > 0 && 916 sce->ra_wb_used < sce->limit - sce->ibuf) { 917 n = uimin(uio->uio_resid, 918 (sce->limit - sce->ibuf) 919 - sce->ra_wb_used); 920 n = uimin(n, sce->limit - sce->fill); 921 error = uiomove(sce->fill, n, uio); 922 if (error) 923 break; 924 sce->fill += n; 925 sce->ra_wb_used += n; 926 if (sce->fill == sce->limit) 927 sce->fill = sce->ibuf; 928 } 929 930 /* 931 * If the transfers stopped because the 932 * buffer was empty, restart them. 933 */ 934 if (sce->state & UGEN_RA_WB_STOP && 935 sce->ra_wb_used > 0) { 936 dbuf = (char *)usbd_get_buffer(xfer); 937 n = uimin(sce->ra_wb_used, 938 sce->ra_wb_xferlen); 939 tn = uimin(n, sce->limit - sce->cur); 940 memcpy(dbuf, sce->cur, tn); 941 dbuf += tn; 942 if (n - tn > 0) 943 memcpy(dbuf, sce->ibuf, 944 n - tn); 945 usbd_setup_xfer(xfer, sce, NULL, n, 946 0, USBD_NO_TIMEOUT, 947 ugen_bulkwb_intr); 948 sce->state &= ~UGEN_RA_WB_STOP; 949 err = usbd_transfer(xfer); 950 if (err != USBD_IN_PROGRESS) 951 /* 952 * The transfer has not been 953 * queued. Setting STOP 954 * will make us try again 955 * at the next read. 956 */ 957 sce->state |= UGEN_RA_WB_STOP; 958 } 959 } 960 mutex_exit(&sc->sc_lock); 961 break; 962 } 963 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 964 0, 0, &xfer); 965 if (error) 966 return error; 967 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 968 error = uiomove(sc->sc_buffer, n, uio); 969 if (error) 970 break; 971 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 972 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 973 sc->sc_buffer, &n); 974 if (err) { 975 if (err == USBD_INTERRUPTED) 976 error = EINTR; 977 else if (err == USBD_TIMEOUT) 978 error = ETIMEDOUT; 979 else 980 error = EIO; 981 break; 982 } 983 } 984 usbd_destroy_xfer(xfer); 985 break; 986 case UE_INTERRUPT: 987 error = usbd_create_xfer(sce->pipeh, 988 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 989 if (error) 990 return error; 991 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 992 uio->uio_resid)) != 0) { 993 error = uiomove(sc->sc_buffer, n, uio); 994 if (error) 995 break; 996 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 997 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 998 sce->timeout, sc->sc_buffer, &n); 999 if (err) { 1000 if (err == USBD_INTERRUPTED) 1001 error = EINTR; 1002 else if (err == USBD_TIMEOUT) 1003 error = ETIMEDOUT; 1004 else 1005 error = EIO; 1006 break; 1007 } 1008 } 1009 usbd_destroy_xfer(xfer); 1010 break; 1011 default: 1012 return ENXIO; 1013 } 1014 return error; 1015 } 1016 1017 int 1018 ugenwrite(dev_t dev, struct uio *uio, int flag) 1019 { 1020 int endpt = UGENENDPOINT(dev); 1021 struct ugen_softc *sc; 1022 int error; 1023 1024 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1025 if (sc == NULL || sc->sc_dying) 1026 return ENXIO; 1027 1028 mutex_enter(&sc->sc_lock); 1029 sc->sc_refcnt++; 1030 mutex_exit(&sc->sc_lock); 1031 1032 error = ugen_do_write(sc, endpt, uio, flag); 1033 1034 mutex_enter(&sc->sc_lock); 1035 if (--sc->sc_refcnt < 0) 1036 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1037 mutex_exit(&sc->sc_lock); 1038 1039 return error; 1040 } 1041 1042 int 1043 ugen_activate(device_t self, enum devact act) 1044 { 1045 struct ugen_softc *sc = device_private(self); 1046 1047 switch (act) { 1048 case DVACT_DEACTIVATE: 1049 sc->sc_dying = 1; 1050 return 0; 1051 default: 1052 return EOPNOTSUPP; 1053 } 1054 } 1055 1056 int 1057 ugen_detach(device_t self, int flags) 1058 { 1059 struct ugen_softc *sc = device_private(self); 1060 struct ugen_endpoint *sce; 1061 int i, dir; 1062 int maj, mn; 1063 1064 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1065 1066 sc->sc_dying = 1; 1067 pmf_device_deregister(self); 1068 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1069 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1070 for (dir = OUT; dir <= IN; dir++) { 1071 sce = &sc->sc_endpoints[i][dir]; 1072 if (sce->pipeh) 1073 usbd_abort_pipe(sce->pipeh); 1074 } 1075 } 1076 1077 mutex_enter(&sc->sc_lock); 1078 if (--sc->sc_refcnt >= 0) { 1079 /* Wake everyone */ 1080 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1081 cv_signal(&sc->sc_endpoints[i][IN].cv); 1082 /* Wait for processes to go away. */ 1083 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1084 } 1085 mutex_exit(&sc->sc_lock); 1086 1087 /* locate the major number */ 1088 maj = cdevsw_lookup_major(&ugen_cdevsw); 1089 1090 /* Nuke the vnodes for any open instances (calls close). */ 1091 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1092 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1093 1094 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1095 1096 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1097 for (dir = OUT; dir <= IN; dir++) { 1098 sce = &sc->sc_endpoints[i][dir]; 1099 seldestroy(&sce->rsel); 1100 cv_destroy(&sce->cv); 1101 } 1102 } 1103 1104 cv_destroy(&sc->sc_detach_cv); 1105 mutex_destroy(&sc->sc_lock); 1106 1107 return 0; 1108 } 1109 1110 Static void 1111 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1112 { 1113 struct ugen_endpoint *sce = addr; 1114 struct ugen_softc *sc = sce->sc; 1115 uint32_t count; 1116 u_char *ibuf; 1117 1118 if (status == USBD_CANCELLED) 1119 return; 1120 1121 if (status != USBD_NORMAL_COMPLETION) { 1122 DPRINTF(("ugenintr: status=%d\n", status)); 1123 if (status == USBD_STALLED) 1124 usbd_clear_endpoint_stall_async(sce->pipeh); 1125 return; 1126 } 1127 1128 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1129 ibuf = sce->ibuf; 1130 1131 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1132 xfer, status, count)); 1133 DPRINTFN(5, (" data = %02x %02x %02x\n", 1134 ibuf[0], ibuf[1], ibuf[2])); 1135 1136 (void)b_to_q(ibuf, count, &sce->q); 1137 1138 mutex_enter(&sc->sc_lock); 1139 if (sce->state & UGEN_ASLP) { 1140 sce->state &= ~UGEN_ASLP; 1141 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1142 cv_signal(&sce->cv); 1143 } 1144 mutex_exit(&sc->sc_lock); 1145 selnotify(&sce->rsel, 0, 0); 1146 } 1147 1148 Static void 1149 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1150 usbd_status status) 1151 { 1152 struct isoreq *req = addr; 1153 struct ugen_endpoint *sce = req->sce; 1154 struct ugen_softc *sc = sce->sc; 1155 uint32_t count, n; 1156 int i, isize; 1157 1158 /* Return if we are aborting. */ 1159 if (status == USBD_CANCELLED) 1160 return; 1161 1162 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1163 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1164 (long)(req - sce->isoreqs), count)); 1165 1166 /* throw away oldest input if the buffer is full */ 1167 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1168 sce->cur += count; 1169 if(sce->cur >= sce->limit) 1170 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1171 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1172 count)); 1173 } 1174 1175 isize = UGETW(sce->edesc->wMaxPacketSize); 1176 for (i = 0; i < UGEN_NISORFRMS; i++) { 1177 uint32_t actlen = req->sizes[i]; 1178 char const *tbuf = (char const *)req->dmabuf + isize * i; 1179 1180 /* copy data to buffer */ 1181 while (actlen > 0) { 1182 n = uimin(actlen, sce->limit - sce->fill); 1183 memcpy(sce->fill, tbuf, n); 1184 1185 tbuf += n; 1186 actlen -= n; 1187 sce->fill += n; 1188 if(sce->fill == sce->limit) 1189 sce->fill = sce->ibuf; 1190 } 1191 1192 /* setup size for next transfer */ 1193 req->sizes[i] = isize; 1194 } 1195 1196 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1197 ugen_isoc_rintr); 1198 (void)usbd_transfer(xfer); 1199 1200 mutex_enter(&sc->sc_lock); 1201 if (sce->state & UGEN_ASLP) { 1202 sce->state &= ~UGEN_ASLP; 1203 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1204 cv_signal(&sce->cv); 1205 } 1206 mutex_exit(&sc->sc_lock); 1207 selnotify(&sce->rsel, 0, 0); 1208 } 1209 1210 Static void 1211 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1212 usbd_status status) 1213 { 1214 struct ugen_endpoint *sce = addr; 1215 struct ugen_softc *sc = sce->sc; 1216 uint32_t count, n; 1217 char const *tbuf; 1218 usbd_status err; 1219 1220 /* Return if we are aborting. */ 1221 if (status == USBD_CANCELLED) 1222 return; 1223 1224 if (status != USBD_NORMAL_COMPLETION) { 1225 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1226 sce->state |= UGEN_RA_WB_STOP; 1227 if (status == USBD_STALLED) 1228 usbd_clear_endpoint_stall_async(sce->pipeh); 1229 return; 1230 } 1231 1232 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1233 1234 /* Keep track of how much is in the buffer. */ 1235 sce->ra_wb_used += count; 1236 1237 /* Copy data to buffer. */ 1238 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1239 n = uimin(count, sce->limit - sce->fill); 1240 memcpy(sce->fill, tbuf, n); 1241 tbuf += n; 1242 count -= n; 1243 sce->fill += n; 1244 if (sce->fill == sce->limit) 1245 sce->fill = sce->ibuf; 1246 if (count > 0) { 1247 memcpy(sce->fill, tbuf, count); 1248 sce->fill += count; 1249 } 1250 1251 /* Set up the next request if necessary. */ 1252 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1253 if (n > 0) { 1254 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1255 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1256 err = usbd_transfer(xfer); 1257 if (err != USBD_IN_PROGRESS) { 1258 printf("usbd_bulkra_intr: error=%d\n", err); 1259 /* 1260 * The transfer has not been queued. Setting STOP 1261 * will make us try again at the next read. 1262 */ 1263 sce->state |= UGEN_RA_WB_STOP; 1264 } 1265 } 1266 else 1267 sce->state |= UGEN_RA_WB_STOP; 1268 1269 mutex_enter(&sc->sc_lock); 1270 if (sce->state & UGEN_ASLP) { 1271 sce->state &= ~UGEN_ASLP; 1272 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1273 cv_signal(&sce->cv); 1274 } 1275 mutex_exit(&sc->sc_lock); 1276 selnotify(&sce->rsel, 0, 0); 1277 } 1278 1279 Static void 1280 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1281 usbd_status status) 1282 { 1283 struct ugen_endpoint *sce = addr; 1284 struct ugen_softc *sc = sce->sc; 1285 uint32_t count, n; 1286 char *tbuf; 1287 usbd_status err; 1288 1289 /* Return if we are aborting. */ 1290 if (status == USBD_CANCELLED) 1291 return; 1292 1293 if (status != USBD_NORMAL_COMPLETION) { 1294 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1295 sce->state |= UGEN_RA_WB_STOP; 1296 if (status == USBD_STALLED) 1297 usbd_clear_endpoint_stall_async(sce->pipeh); 1298 return; 1299 } 1300 1301 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1302 1303 /* Keep track of how much is in the buffer. */ 1304 sce->ra_wb_used -= count; 1305 1306 /* Update buffer pointers. */ 1307 sce->cur += count; 1308 if (sce->cur >= sce->limit) 1309 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1310 1311 /* Set up next request if necessary. */ 1312 if (sce->ra_wb_used > 0) { 1313 /* copy data from buffer */ 1314 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1315 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1316 n = uimin(count, sce->limit - sce->cur); 1317 memcpy(tbuf, sce->cur, n); 1318 tbuf += n; 1319 if (count - n > 0) 1320 memcpy(tbuf, sce->ibuf, count - n); 1321 1322 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1323 ugen_bulkwb_intr); 1324 err = usbd_transfer(xfer); 1325 if (err != USBD_IN_PROGRESS) { 1326 printf("usbd_bulkwb_intr: error=%d\n", err); 1327 /* 1328 * The transfer has not been queued. Setting STOP 1329 * will make us try again at the next write. 1330 */ 1331 sce->state |= UGEN_RA_WB_STOP; 1332 } 1333 } 1334 else 1335 sce->state |= UGEN_RA_WB_STOP; 1336 1337 mutex_enter(&sc->sc_lock); 1338 if (sce->state & UGEN_ASLP) { 1339 sce->state &= ~UGEN_ASLP; 1340 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1341 cv_signal(&sce->cv); 1342 } 1343 mutex_exit(&sc->sc_lock); 1344 selnotify(&sce->rsel, 0, 0); 1345 } 1346 1347 Static usbd_status 1348 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1349 { 1350 struct usbd_interface *iface; 1351 usb_endpoint_descriptor_t *ed; 1352 usbd_status err; 1353 struct ugen_endpoint *sce; 1354 uint8_t niface, nendpt, endptno, endpt; 1355 int dir; 1356 1357 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1358 1359 err = usbd_interface_count(sc->sc_udev, &niface); 1360 if (err) 1361 return err; 1362 if (ifaceidx < 0 || ifaceidx >= niface) 1363 return USBD_INVAL; 1364 1365 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1366 if (err) 1367 return err; 1368 err = usbd_endpoint_count(iface, &nendpt); 1369 if (err) 1370 return err; 1371 1372 /* change setting */ 1373 err = usbd_set_interface(iface, altno); 1374 if (err) 1375 return err; 1376 1377 err = usbd_endpoint_count(iface, &nendpt); 1378 if (err) 1379 return err; 1380 1381 ugen_clear_endpoints(sc); 1382 1383 for (endptno = 0; endptno < nendpt; endptno++) { 1384 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1385 KASSERT(ed != NULL); 1386 endpt = ed->bEndpointAddress; 1387 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1388 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1389 sce->sc = sc; 1390 sce->edesc = ed; 1391 sce->iface = iface; 1392 } 1393 return 0; 1394 } 1395 1396 /* Retrieve a complete descriptor for a certain device and index. */ 1397 Static usb_config_descriptor_t * 1398 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1399 { 1400 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1401 int len; 1402 usbd_status err; 1403 1404 if (index == USB_CURRENT_CONFIG_INDEX) { 1405 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1406 len = UGETW(tdesc->wTotalLength); 1407 if (lenp) 1408 *lenp = len; 1409 cdesc = kmem_alloc(len, KM_SLEEP); 1410 memcpy(cdesc, tdesc, len); 1411 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1412 } else { 1413 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1414 if (err) 1415 return 0; 1416 len = UGETW(cdescr.wTotalLength); 1417 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1418 if (lenp) 1419 *lenp = len; 1420 cdesc = kmem_alloc(len, KM_SLEEP); 1421 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1422 if (err) { 1423 kmem_free(cdesc, len); 1424 return 0; 1425 } 1426 } 1427 return cdesc; 1428 } 1429 1430 Static int 1431 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1432 { 1433 struct usbd_interface *iface; 1434 usbd_status err; 1435 1436 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1437 if (err) 1438 return -1; 1439 return usbd_get_interface_altindex(iface); 1440 } 1441 1442 Static int 1443 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1444 void *addr, int flag, struct lwp *l) 1445 { 1446 struct ugen_endpoint *sce; 1447 usbd_status err; 1448 struct usbd_interface *iface; 1449 struct usb_config_desc *cd; 1450 usb_config_descriptor_t *cdesc; 1451 struct usb_interface_desc *id; 1452 usb_interface_descriptor_t *idesc; 1453 struct usb_endpoint_desc *ed; 1454 usb_endpoint_descriptor_t *edesc; 1455 struct usb_alt_interface *ai; 1456 struct usb_string_desc *si; 1457 uint8_t conf, alt; 1458 int cdesclen; 1459 int error; 1460 int dir; 1461 1462 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1463 if (sc->sc_dying) 1464 return EIO; 1465 1466 switch (cmd) { 1467 case FIONBIO: 1468 /* All handled in the upper FS layer. */ 1469 return 0; 1470 case USB_SET_SHORT_XFER: 1471 if (endpt == USB_CONTROL_ENDPOINT) 1472 return EINVAL; 1473 /* This flag only affects read */ 1474 sce = &sc->sc_endpoints[endpt][IN]; 1475 if (sce == NULL || sce->pipeh == NULL) 1476 return EINVAL; 1477 if (*(int *)addr) 1478 sce->state |= UGEN_SHORT_OK; 1479 else 1480 sce->state &= ~UGEN_SHORT_OK; 1481 return 0; 1482 case USB_SET_TIMEOUT: 1483 for (dir = OUT; dir <= IN; dir++) { 1484 sce = &sc->sc_endpoints[endpt][dir]; 1485 if (sce == NULL) 1486 return EINVAL; 1487 1488 sce->timeout = *(int *)addr; 1489 } 1490 return 0; 1491 case USB_SET_BULK_RA: 1492 if (endpt == USB_CONTROL_ENDPOINT) 1493 return EINVAL; 1494 sce = &sc->sc_endpoints[endpt][IN]; 1495 if (sce == NULL || sce->pipeh == NULL) 1496 return EINVAL; 1497 edesc = sce->edesc; 1498 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1499 return EINVAL; 1500 1501 if (*(int *)addr) { 1502 /* Only turn RA on if it's currently off. */ 1503 if (sce->state & UGEN_BULK_RA) 1504 return 0; 1505 1506 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1507 /* shouldn't happen */ 1508 return EINVAL; 1509 error = usbd_create_xfer(sce->pipeh, 1510 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1511 if (error) 1512 return error; 1513 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1514 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1515 sce->fill = sce->cur = sce->ibuf; 1516 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1517 sce->ra_wb_used = 0; 1518 sce->state |= UGEN_BULK_RA; 1519 sce->state &= ~UGEN_RA_WB_STOP; 1520 /* Now start reading. */ 1521 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1522 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1523 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1524 err = usbd_transfer(sce->ra_wb_xfer); 1525 if (err != USBD_IN_PROGRESS) { 1526 sce->state &= ~UGEN_BULK_RA; 1527 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1528 sce->ibuf = NULL; 1529 usbd_destroy_xfer(sce->ra_wb_xfer); 1530 return EIO; 1531 } 1532 } else { 1533 /* Only turn RA off if it's currently on. */ 1534 if (!(sce->state & UGEN_BULK_RA)) 1535 return 0; 1536 1537 sce->state &= ~UGEN_BULK_RA; 1538 usbd_abort_pipe(sce->pipeh); 1539 usbd_destroy_xfer(sce->ra_wb_xfer); 1540 /* 1541 * XXX Discard whatever's in the buffer, but we 1542 * should keep it around and drain the buffer 1543 * instead. 1544 */ 1545 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1546 sce->ibuf = NULL; 1547 } 1548 return 0; 1549 case USB_SET_BULK_WB: 1550 if (endpt == USB_CONTROL_ENDPOINT) 1551 return EINVAL; 1552 sce = &sc->sc_endpoints[endpt][OUT]; 1553 if (sce == NULL || sce->pipeh == NULL) 1554 return EINVAL; 1555 edesc = sce->edesc; 1556 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1557 return EINVAL; 1558 1559 if (*(int *)addr) { 1560 /* Only turn WB on if it's currently off. */ 1561 if (sce->state & UGEN_BULK_WB) 1562 return 0; 1563 1564 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1565 /* shouldn't happen */ 1566 return EINVAL; 1567 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1568 0, 0, &sce->ra_wb_xfer); 1569 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1570 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1571 sce->fill = sce->cur = sce->ibuf; 1572 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1573 sce->ra_wb_used = 0; 1574 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1575 } else { 1576 /* Only turn WB off if it's currently on. */ 1577 if (!(sce->state & UGEN_BULK_WB)) 1578 return 0; 1579 1580 sce->state &= ~UGEN_BULK_WB; 1581 /* 1582 * XXX Discard whatever's in the buffer, but we 1583 * should keep it around and keep writing to 1584 * drain the buffer instead. 1585 */ 1586 usbd_abort_pipe(sce->pipeh); 1587 usbd_destroy_xfer(sce->ra_wb_xfer); 1588 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1589 sce->ibuf = NULL; 1590 } 1591 return 0; 1592 case USB_SET_BULK_RA_OPT: 1593 case USB_SET_BULK_WB_OPT: 1594 { 1595 struct usb_bulk_ra_wb_opt *opt; 1596 1597 if (endpt == USB_CONTROL_ENDPOINT) 1598 return EINVAL; 1599 opt = (struct usb_bulk_ra_wb_opt *)addr; 1600 if (cmd == USB_SET_BULK_RA_OPT) 1601 sce = &sc->sc_endpoints[endpt][IN]; 1602 else 1603 sce = &sc->sc_endpoints[endpt][OUT]; 1604 if (sce == NULL || sce->pipeh == NULL) 1605 return EINVAL; 1606 if (opt->ra_wb_buffer_size < 1 || 1607 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1608 opt->ra_wb_request_size < 1 || 1609 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1610 return EINVAL; 1611 /* 1612 * XXX These changes do not take effect until the 1613 * next time RA/WB mode is enabled but they ought to 1614 * take effect immediately. 1615 */ 1616 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1617 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1618 return 0; 1619 } 1620 default: 1621 break; 1622 } 1623 1624 if (endpt != USB_CONTROL_ENDPOINT) 1625 return EINVAL; 1626 1627 switch (cmd) { 1628 #ifdef UGEN_DEBUG 1629 case USB_SETDEBUG: 1630 ugendebug = *(int *)addr; 1631 break; 1632 #endif 1633 case USB_GET_CONFIG: 1634 err = usbd_get_config(sc->sc_udev, &conf); 1635 if (err) 1636 return EIO; 1637 *(int *)addr = conf; 1638 break; 1639 case USB_SET_CONFIG: 1640 if (!(flag & FWRITE)) 1641 return EPERM; 1642 err = ugen_set_config(sc, *(int *)addr, 1); 1643 switch (err) { 1644 case USBD_NORMAL_COMPLETION: 1645 break; 1646 case USBD_IN_USE: 1647 return EBUSY; 1648 default: 1649 return EIO; 1650 } 1651 break; 1652 case USB_GET_ALTINTERFACE: 1653 ai = (struct usb_alt_interface *)addr; 1654 err = usbd_device2interface_handle(sc->sc_udev, 1655 ai->uai_interface_index, &iface); 1656 if (err) 1657 return EINVAL; 1658 idesc = usbd_get_interface_descriptor(iface); 1659 if (idesc == NULL) 1660 return EIO; 1661 ai->uai_alt_no = idesc->bAlternateSetting; 1662 break; 1663 case USB_SET_ALTINTERFACE: 1664 if (!(flag & FWRITE)) 1665 return EPERM; 1666 ai = (struct usb_alt_interface *)addr; 1667 err = usbd_device2interface_handle(sc->sc_udev, 1668 ai->uai_interface_index, &iface); 1669 if (err) 1670 return EINVAL; 1671 err = ugen_set_interface(sc, ai->uai_interface_index, 1672 ai->uai_alt_no); 1673 if (err) 1674 return EINVAL; 1675 break; 1676 case USB_GET_NO_ALT: 1677 ai = (struct usb_alt_interface *)addr; 1678 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1679 if (cdesc == NULL) 1680 return EINVAL; 1681 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1682 if (idesc == NULL) { 1683 kmem_free(cdesc, cdesclen); 1684 return EINVAL; 1685 } 1686 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1687 idesc->bInterfaceNumber); 1688 kmem_free(cdesc, cdesclen); 1689 break; 1690 case USB_GET_DEVICE_DESC: 1691 *(usb_device_descriptor_t *)addr = 1692 *usbd_get_device_descriptor(sc->sc_udev); 1693 break; 1694 case USB_GET_CONFIG_DESC: 1695 cd = (struct usb_config_desc *)addr; 1696 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1697 if (cdesc == NULL) 1698 return EINVAL; 1699 cd->ucd_desc = *cdesc; 1700 kmem_free(cdesc, cdesclen); 1701 break; 1702 case USB_GET_INTERFACE_DESC: 1703 id = (struct usb_interface_desc *)addr; 1704 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1705 if (cdesc == NULL) 1706 return EINVAL; 1707 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1708 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1709 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1710 else 1711 alt = id->uid_alt_index; 1712 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1713 if (idesc == NULL) { 1714 kmem_free(cdesc, cdesclen); 1715 return EINVAL; 1716 } 1717 id->uid_desc = *idesc; 1718 kmem_free(cdesc, cdesclen); 1719 break; 1720 case USB_GET_ENDPOINT_DESC: 1721 ed = (struct usb_endpoint_desc *)addr; 1722 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1723 if (cdesc == NULL) 1724 return EINVAL; 1725 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1726 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1727 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1728 else 1729 alt = ed->ued_alt_index; 1730 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1731 alt, ed->ued_endpoint_index); 1732 if (edesc == NULL) { 1733 kmem_free(cdesc, cdesclen); 1734 return EINVAL; 1735 } 1736 ed->ued_desc = *edesc; 1737 kmem_free(cdesc, cdesclen); 1738 break; 1739 case USB_GET_FULL_DESC: 1740 { 1741 int len; 1742 struct iovec iov; 1743 struct uio uio; 1744 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 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 1782 error = 0; 1783 1784 if (!(flag & FWRITE)) 1785 return EPERM; 1786 /* Avoid requests that would damage the bus integrity. */ 1787 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1788 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1789 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1790 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1791 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1792 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1793 return EINVAL; 1794 1795 if (len < 0 || len > 32767) 1796 return EINVAL; 1797 if (len != 0) { 1798 iov.iov_base = (void *)ur->ucr_data; 1799 iov.iov_len = len; 1800 uio.uio_iov = &iov; 1801 uio.uio_iovcnt = 1; 1802 uio.uio_resid = len; 1803 uio.uio_offset = 0; 1804 uio.uio_rw = 1805 ur->ucr_request.bmRequestType & UT_READ ? 1806 UIO_READ : UIO_WRITE; 1807 uio.uio_vmspace = l->l_proc->p_vmspace; 1808 ptr = kmem_alloc(len, KM_SLEEP); 1809 if (uio.uio_rw == UIO_WRITE) { 1810 error = uiomove(ptr, len, &uio); 1811 if (error) 1812 goto ret; 1813 } 1814 } 1815 sce = &sc->sc_endpoints[endpt][IN]; 1816 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1817 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1818 if (xerr) { 1819 error = EIO; 1820 goto ret; 1821 } 1822 if (len != 0) { 1823 if (uio.uio_rw == UIO_READ) { 1824 size_t alen = uimin(len, ur->ucr_actlen); 1825 error = uiomove(ptr, alen, &uio); 1826 if (error) 1827 goto ret; 1828 } 1829 } 1830 ret: 1831 if (ptr) 1832 kmem_free(ptr, len); 1833 return error; 1834 } 1835 case USB_GET_DEVICEINFO: 1836 usbd_fill_deviceinfo(sc->sc_udev, 1837 (struct usb_device_info *)addr, 0); 1838 break; 1839 case USB_GET_DEVICEINFO_OLD: 1840 { 1841 int ret; 1842 MODULE_CALL_HOOK(usb_subr_30_fill_hook, 1843 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1844 usbd_devinfo_vp, usbd_printBCD), 1845 enosys(), ret); 1846 if (ret == 0) 1847 return 0; 1848 return EINVAL; 1849 } 1850 default: 1851 return EINVAL; 1852 } 1853 return 0; 1854 } 1855 1856 int 1857 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1858 { 1859 int endpt = UGENENDPOINT(dev); 1860 struct ugen_softc *sc; 1861 int error; 1862 1863 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1864 if (sc == NULL || sc->sc_dying) 1865 return ENXIO; 1866 1867 sc->sc_refcnt++; 1868 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1869 if (--sc->sc_refcnt < 0) 1870 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1871 return error; 1872 } 1873 1874 int 1875 ugenpoll(dev_t dev, int events, struct lwp *l) 1876 { 1877 struct ugen_softc *sc; 1878 struct ugen_endpoint *sce_in, *sce_out; 1879 int revents = 0; 1880 1881 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1882 if (sc == NULL) 1883 return ENXIO; 1884 1885 if (sc->sc_dying) 1886 return POLLHUP; 1887 1888 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1889 return ENODEV; 1890 1891 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1892 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1893 if (sce_in == NULL && sce_out == NULL) 1894 return POLLERR; 1895 #ifdef DIAGNOSTIC 1896 if (!sce_in->edesc && !sce_out->edesc) { 1897 printf("ugenpoll: no edesc\n"); 1898 return POLLERR; 1899 } 1900 /* It's possible to have only one pipe open. */ 1901 if (!sce_in->pipeh && !sce_out->pipeh) { 1902 printf("ugenpoll: no pipe\n"); 1903 return POLLERR; 1904 } 1905 #endif 1906 1907 mutex_enter(&sc->sc_lock); 1908 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1909 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1910 case UE_INTERRUPT: 1911 if (sce_in->q.c_cc > 0) 1912 revents |= events & (POLLIN | POLLRDNORM); 1913 else 1914 selrecord(l, &sce_in->rsel); 1915 break; 1916 case UE_ISOCHRONOUS: 1917 if (sce_in->cur != sce_in->fill) 1918 revents |= events & (POLLIN | POLLRDNORM); 1919 else 1920 selrecord(l, &sce_in->rsel); 1921 break; 1922 case UE_BULK: 1923 if (sce_in->state & UGEN_BULK_RA) { 1924 if (sce_in->ra_wb_used > 0) 1925 revents |= events & 1926 (POLLIN | POLLRDNORM); 1927 else 1928 selrecord(l, &sce_in->rsel); 1929 break; 1930 } 1931 /* 1932 * We have no easy way of determining if a read will 1933 * yield any data or a write will happen. 1934 * Pretend they will. 1935 */ 1936 revents |= events & (POLLIN | POLLRDNORM); 1937 break; 1938 default: 1939 break; 1940 } 1941 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1942 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1943 case UE_INTERRUPT: 1944 case UE_ISOCHRONOUS: 1945 /* XXX unimplemented */ 1946 break; 1947 case UE_BULK: 1948 if (sce_out->state & UGEN_BULK_WB) { 1949 if (sce_out->ra_wb_used < 1950 sce_out->limit - sce_out->ibuf) 1951 revents |= events & 1952 (POLLOUT | POLLWRNORM); 1953 else 1954 selrecord(l, &sce_out->rsel); 1955 break; 1956 } 1957 /* 1958 * We have no easy way of determining if a read will 1959 * yield any data or a write will happen. 1960 * Pretend they will. 1961 */ 1962 revents |= events & (POLLOUT | POLLWRNORM); 1963 break; 1964 default: 1965 break; 1966 } 1967 1968 mutex_exit(&sc->sc_lock); 1969 1970 return revents; 1971 } 1972 1973 static void 1974 filt_ugenrdetach(struct knote *kn) 1975 { 1976 struct ugen_endpoint *sce = kn->kn_hook; 1977 struct ugen_softc *sc = sce->sc; 1978 1979 mutex_enter(&sc->sc_lock); 1980 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1981 mutex_exit(&sc->sc_lock); 1982 } 1983 1984 static int 1985 filt_ugenread_intr(struct knote *kn, long hint) 1986 { 1987 struct ugen_endpoint *sce = kn->kn_hook; 1988 struct ugen_softc *sc = sce->sc; 1989 1990 if (sc->sc_dying) 1991 return 0; 1992 1993 kn->kn_data = sce->q.c_cc; 1994 return kn->kn_data > 0; 1995 } 1996 1997 static int 1998 filt_ugenread_isoc(struct knote *kn, long hint) 1999 { 2000 struct ugen_endpoint *sce = kn->kn_hook; 2001 struct ugen_softc *sc = sce->sc; 2002 2003 if (sc->sc_dying) 2004 return 0; 2005 2006 if (sce->cur == sce->fill) 2007 return 0; 2008 2009 if (sce->cur < sce->fill) 2010 kn->kn_data = sce->fill - sce->cur; 2011 else 2012 kn->kn_data = (sce->limit - sce->cur) + 2013 (sce->fill - sce->ibuf); 2014 2015 return 1; 2016 } 2017 2018 static int 2019 filt_ugenread_bulk(struct knote *kn, long hint) 2020 { 2021 struct ugen_endpoint *sce = kn->kn_hook; 2022 struct ugen_softc *sc = sce->sc; 2023 2024 if (sc->sc_dying) 2025 return 0; 2026 2027 if (!(sce->state & UGEN_BULK_RA)) 2028 /* 2029 * We have no easy way of determining if a read will 2030 * yield any data or a write will happen. 2031 * So, emulate "seltrue". 2032 */ 2033 return filt_seltrue(kn, hint); 2034 2035 if (sce->ra_wb_used == 0) 2036 return 0; 2037 2038 kn->kn_data = sce->ra_wb_used; 2039 2040 return 1; 2041 } 2042 2043 static int 2044 filt_ugenwrite_bulk(struct knote *kn, long hint) 2045 { 2046 struct ugen_endpoint *sce = kn->kn_hook; 2047 struct ugen_softc *sc = sce->sc; 2048 2049 if (sc->sc_dying) 2050 return 0; 2051 2052 if (!(sce->state & UGEN_BULK_WB)) 2053 /* 2054 * We have no easy way of determining if a read will 2055 * yield any data or a write will happen. 2056 * So, emulate "seltrue". 2057 */ 2058 return filt_seltrue(kn, hint); 2059 2060 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2061 return 0; 2062 2063 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2064 2065 return 1; 2066 } 2067 2068 static const struct filterops ugenread_intr_filtops = { 2069 .f_isfd = 1, 2070 .f_attach = NULL, 2071 .f_detach = filt_ugenrdetach, 2072 .f_event = filt_ugenread_intr, 2073 }; 2074 2075 static const struct filterops ugenread_isoc_filtops = { 2076 .f_isfd = 1, 2077 .f_attach = NULL, 2078 .f_detach = filt_ugenrdetach, 2079 .f_event = filt_ugenread_isoc, 2080 }; 2081 2082 static const struct filterops ugenread_bulk_filtops = { 2083 .f_isfd = 1, 2084 .f_attach = NULL, 2085 .f_detach = filt_ugenrdetach, 2086 .f_event = filt_ugenread_bulk, 2087 }; 2088 2089 static const struct filterops ugenwrite_bulk_filtops = { 2090 .f_isfd = 1, 2091 .f_attach = NULL, 2092 .f_detach = filt_ugenrdetach, 2093 .f_event = filt_ugenwrite_bulk, 2094 }; 2095 2096 int 2097 ugenkqfilter(dev_t dev, struct knote *kn) 2098 { 2099 struct ugen_softc *sc; 2100 struct ugen_endpoint *sce; 2101 struct klist *klist; 2102 2103 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2104 if (sc == NULL || sc->sc_dying) 2105 return ENXIO; 2106 2107 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2108 return ENODEV; 2109 2110 switch (kn->kn_filter) { 2111 case EVFILT_READ: 2112 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2113 if (sce == NULL) 2114 return EINVAL; 2115 2116 klist = &sce->rsel.sel_klist; 2117 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2118 case UE_INTERRUPT: 2119 kn->kn_fop = &ugenread_intr_filtops; 2120 break; 2121 case UE_ISOCHRONOUS: 2122 kn->kn_fop = &ugenread_isoc_filtops; 2123 break; 2124 case UE_BULK: 2125 kn->kn_fop = &ugenread_bulk_filtops; 2126 break; 2127 default: 2128 return EINVAL; 2129 } 2130 break; 2131 2132 case EVFILT_WRITE: 2133 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2134 if (sce == NULL) 2135 return EINVAL; 2136 2137 klist = &sce->rsel.sel_klist; 2138 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2139 case UE_INTERRUPT: 2140 case UE_ISOCHRONOUS: 2141 /* XXX poll doesn't support this */ 2142 return EINVAL; 2143 2144 case UE_BULK: 2145 kn->kn_fop = &ugenwrite_bulk_filtops; 2146 break; 2147 default: 2148 return EINVAL; 2149 } 2150 break; 2151 2152 default: 2153 return EINVAL; 2154 } 2155 2156 kn->kn_hook = sce; 2157 2158 mutex_enter(&sc->sc_lock); 2159 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2160 mutex_exit(&sc->sc_lock); 2161 2162 return 0; 2163 } 2164
Indexes created Fri Sep 26 20:09:58 GMT 2025