ugen.c revision 1.138
1 /* $NetBSD: ugen.c,v 1.138 2018/02/20 15:48:37 ws 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 1.138 2018/02/20 15:48:37 ws 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, 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 ugenif_match(device_t, cfdata_t, void *); 185 void ugenif_attach(device_t, device_t, void *); 186 int ugen_match(device_t, cfdata_t, void *); 187 void ugen_attach(device_t, device_t, void *); 188 int ugen_detach(device_t, int); 189 int ugen_activate(device_t, enum devact); 190 extern struct cfdriver ugen_cd; 191 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 192 ugen_attach, ugen_detach, ugen_activate); 193 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 194 ugenif_attach, ugen_detach, ugen_activate); 195 196 /* toggle to control attach priority. -1 means "let autoconf decide" */ 197 int ugen_override = -1; 198 199 int 200 ugen_match(device_t parent, cfdata_t match, void *aux) 201 { 202 struct usb_attach_arg *uaa = aux; 203 int override; 204 205 if (ugen_override != -1) 206 override = ugen_override; 207 else 208 override = match->cf_flags & 1; 209 210 if (override) 211 return UMATCH_HIGHEST; 212 else if (uaa->uaa_usegeneric) 213 return UMATCH_GENERIC; 214 else 215 return UMATCH_NONE; 216 } 217 218 int 219 ugenif_match(device_t parent, cfdata_t match, void *aux) 220 { 221 if (match->cf_flags & 1) 222 return UMATCH_HIGHEST; 223 else 224 return UMATCH_NONE; 225 } 226 227 void 228 ugen_attach(device_t parent, device_t self, void *aux) 229 { 230 struct usb_attach_arg *uaa = aux; 231 struct usbif_attach_arg uiaa; 232 233 memset(&uiaa, 0, sizeof uiaa); 234 uiaa.uiaa_port = uaa->uaa_port; 235 uiaa.uiaa_vendor = uaa->uaa_vendor; 236 uiaa.uiaa_product = uaa->uaa_product; 237 uiaa.uiaa_release = uaa->uaa_release; 238 uiaa.uiaa_device = uaa->uaa_device; 239 uiaa.uiaa_configno = -1; 240 uiaa.uiaa_ifaceno = -1; 241 242 ugenif_attach(parent, self, &uiaa); 243 } 244 245 void 246 ugenif_attach(device_t parent, device_t self, void *aux) 247 { 248 struct ugen_softc *sc = device_private(self); 249 struct usbif_attach_arg *uiaa = aux; 250 struct usbd_device *udev; 251 char *devinfop; 252 usbd_status err; 253 int i, dir, conf; 254 255 aprint_naive("\n"); 256 aprint_normal("\n"); 257 258 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 259 cv_init(&sc->sc_detach_cv, "ugendet"); 260 261 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 262 aprint_normal_dev(self, "%s\n", devinfop); 263 usbd_devinfo_free(devinfop); 264 265 sc->sc_dev = self; 266 sc->sc_udev = udev = uiaa->uiaa_device; 267 268 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 269 for (dir = OUT; dir <= IN; dir++) { 270 struct ugen_endpoint *sce; 271 272 sce = &sc->sc_endpoints[i][dir]; 273 selinit(&sce->rsel); 274 cv_init(&sce->cv, "ugensce"); 275 } 276 } 277 278 if (uiaa->uiaa_ifaceno < 0) { 279 /* 280 * If we attach the whole device, 281 * set configuration index 0, the default one. 282 */ 283 err = usbd_set_config_index(udev, 0, 0); 284 if (err) { 285 aprint_error_dev(self, 286 "setting configuration index 0 failed\n"); 287 sc->sc_dying = 1; 288 return; 289 } 290 } 291 292 /* Get current configuration */ 293 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 294 295 /* Set up all the local state for this configuration. */ 296 err = ugen_set_config(sc, conf, uiaa->uiaa_ifaceno < 0); 297 if (err) { 298 aprint_error_dev(self, "setting configuration %d failed\n", 299 conf); 300 sc->sc_dying = 1; 301 return; 302 } 303 304 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 305 306 if (!pmf_device_register(self, NULL, NULL)) 307 aprint_error_dev(self, "couldn't establish power handler\n"); 308 309 } 310 311 Static void 312 ugen_clear_endpoints(struct ugen_softc *sc) 313 { 314 315 /* Clear out the old info, but leave the selinfo and cv initialised. */ 316 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 317 for (int dir = OUT; dir <= IN; dir++) { 318 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 319 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 320 } 321 } 322 } 323 324 Static int 325 ugen_set_config(struct ugen_softc *sc, int configno, int chkopen) 326 { 327 struct usbd_device *dev = sc->sc_udev; 328 usb_config_descriptor_t *cdesc; 329 struct usbd_interface *iface; 330 usb_endpoint_descriptor_t *ed; 331 struct ugen_endpoint *sce; 332 uint8_t niface, nendpt; 333 int ifaceno, endptno, endpt; 334 usbd_status err; 335 int dir; 336 337 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 338 device_xname(sc->sc_dev), configno, sc)); 339 340 if (chkopen) { 341 /* 342 * We start at 1, not 0, because we don't care whether the 343 * control endpoint is open or not. It is always present. 344 */ 345 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 346 if (sc->sc_is_open[endptno]) { 347 DPRINTFN(1, 348 ("ugen_set_config: %s - endpoint %d is open\n", 349 device_xname(sc->sc_dev), endptno)); 350 return USBD_IN_USE; 351 } 352 } 353 354 /* Avoid setting the current value. */ 355 cdesc = usbd_get_config_descriptor(dev); 356 if (!cdesc || cdesc->bConfigurationValue != configno) { 357 err = usbd_set_config_no(dev, configno, 1); 358 if (err) 359 return err; 360 } 361 362 ugen_clear_endpoints(sc); 363 364 err = usbd_interface_count(dev, &niface); 365 if (err) 366 return err; 367 368 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 369 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 370 err = usbd_device2interface_handle(dev, ifaceno, &iface); 371 if (err) 372 return err; 373 err = usbd_endpoint_count(iface, &nendpt); 374 if (err) 375 return err; 376 for (endptno = 0; endptno < nendpt; endptno++) { 377 ed = usbd_interface2endpoint_descriptor(iface,endptno); 378 KASSERT(ed != NULL); 379 endpt = ed->bEndpointAddress; 380 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 381 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 382 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 383 "(%d,%d), sce=%p\n", 384 endptno, endpt, UE_GET_ADDR(endpt), 385 UE_GET_DIR(endpt), sce)); 386 sce->sc = sc; 387 sce->edesc = ed; 388 sce->iface = iface; 389 } 390 } 391 return USBD_NORMAL_COMPLETION; 392 } 393 394 int 395 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 396 { 397 struct ugen_softc *sc; 398 int unit = UGENUNIT(dev); 399 int endpt = UGENENDPOINT(dev); 400 usb_endpoint_descriptor_t *edesc; 401 struct ugen_endpoint *sce; 402 int dir, isize; 403 usbd_status err; 404 struct usbd_xfer *xfer; 405 int i, j; 406 407 sc = device_lookup_private(&ugen_cd, unit); 408 if (sc == NULL || sc->sc_dying) 409 return ENXIO; 410 411 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 412 flag, mode, unit, endpt)); 413 414 /* The control endpoint allows multiple opens. */ 415 if (endpt == USB_CONTROL_ENDPOINT) { 416 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 417 return 0; 418 } 419 420 if (sc->sc_is_open[endpt]) 421 return EBUSY; 422 423 /* Make sure there are pipes for all directions. */ 424 for (dir = OUT; dir <= IN; dir++) { 425 if (flag & (dir == OUT ? FWRITE : FREAD)) { 426 sce = &sc->sc_endpoints[endpt][dir]; 427 if (sce->edesc == NULL) 428 return ENXIO; 429 } 430 } 431 432 /* Actually open the pipes. */ 433 /* XXX Should back out properly if it fails. */ 434 for (dir = OUT; dir <= IN; dir++) { 435 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 436 continue; 437 sce = &sc->sc_endpoints[endpt][dir]; 438 sce->state = 0; 439 sce->timeout = USBD_NO_TIMEOUT; 440 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 441 sc, endpt, dir, sce)); 442 edesc = sce->edesc; 443 switch (edesc->bmAttributes & UE_XFERTYPE) { 444 case UE_INTERRUPT: 445 if (dir == OUT) { 446 err = usbd_open_pipe(sce->iface, 447 edesc->bEndpointAddress, 0, &sce->pipeh); 448 if (err) 449 return EIO; 450 break; 451 } 452 isize = UGETW(edesc->wMaxPacketSize); 453 if (isize == 0) /* shouldn't happen */ 454 return EINVAL; 455 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 456 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 457 endpt, isize)); 458 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 459 kmem_free(sce->ibuf, isize); 460 sce->ibuf = NULL; 461 return ENOMEM; 462 } 463 err = usbd_open_pipe_intr(sce->iface, 464 edesc->bEndpointAddress, 465 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 466 sce->ibuf, isize, ugenintr, 467 USBD_DEFAULT_INTERVAL); 468 if (err) { 469 clfree(&sce->q); 470 kmem_free(sce->ibuf, isize); 471 sce->ibuf = NULL; 472 return EIO; 473 } 474 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 475 break; 476 case UE_BULK: 477 err = usbd_open_pipe(sce->iface, 478 edesc->bEndpointAddress, 0, &sce->pipeh); 479 if (err) 480 return EIO; 481 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 482 /* 483 * Use request size for non-RA/WB transfers 484 * as the default. 485 */ 486 sce->ra_wb_reqsize = UGEN_BBSIZE; 487 break; 488 case UE_ISOCHRONOUS: 489 if (dir == OUT) 490 return EINVAL; 491 isize = UGETW(edesc->wMaxPacketSize); 492 if (isize == 0) /* shouldn't happen */ 493 return EINVAL; 494 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 495 KM_SLEEP); 496 sce->cur = sce->fill = sce->ibuf; 497 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 498 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 499 endpt, isize)); 500 err = usbd_open_pipe(sce->iface, 501 edesc->bEndpointAddress, 0, &sce->pipeh); 502 if (err) { 503 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 504 sce->ibuf = NULL; 505 return EIO; 506 } 507 for (i = 0; i < UGEN_NISOREQS; ++i) { 508 sce->isoreqs[i].sce = sce; 509 err = usbd_create_xfer(sce->pipeh, 510 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 511 &xfer); 512 if (err) 513 goto bad; 514 sce->isoreqs[i].xfer = xfer; 515 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 516 for (j = 0; j < UGEN_NISORFRMS; ++j) 517 sce->isoreqs[i].sizes[j] = isize; 518 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 519 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 520 ugen_isoc_rintr); 521 (void)usbd_transfer(xfer); 522 } 523 DPRINTFN(5, ("ugenopen: isoc open done\n")); 524 break; 525 bad: 526 while (--i >= 0) /* implicit buffer free */ 527 usbd_destroy_xfer(sce->isoreqs[i].xfer); 528 usbd_close_pipe(sce->pipeh); 529 sce->pipeh = NULL; 530 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 531 sce->ibuf = NULL; 532 return ENOMEM; 533 case UE_CONTROL: 534 sce->timeout = USBD_DEFAULT_TIMEOUT; 535 return EINVAL; 536 } 537 } 538 sc->sc_is_open[endpt] = 1; 539 return 0; 540 } 541 542 int 543 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 544 { 545 int endpt = UGENENDPOINT(dev); 546 struct ugen_softc *sc; 547 struct ugen_endpoint *sce; 548 int dir; 549 int i; 550 551 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 552 if (sc == NULL || sc->sc_dying) 553 return ENXIO; 554 555 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 556 flag, mode, UGENUNIT(dev), endpt)); 557 558 #ifdef DIAGNOSTIC 559 if (!sc->sc_is_open[endpt]) { 560 printf("ugenclose: not open\n"); 561 return EINVAL; 562 } 563 #endif 564 565 if (endpt == USB_CONTROL_ENDPOINT) { 566 DPRINTFN(5, ("ugenclose: close control\n")); 567 sc->sc_is_open[endpt] = 0; 568 return 0; 569 } 570 571 for (dir = OUT; dir <= IN; dir++) { 572 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 573 continue; 574 sce = &sc->sc_endpoints[endpt][dir]; 575 if (sce->pipeh == NULL) 576 continue; 577 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 578 endpt, dir, sce)); 579 580 usbd_abort_pipe(sce->pipeh); 581 582 int isize = UGETW(sce->edesc->wMaxPacketSize); 583 int msize = 0; 584 585 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 586 case UE_INTERRUPT: 587 ndflush(&sce->q, sce->q.c_cc); 588 clfree(&sce->q); 589 msize = isize; 590 break; 591 case UE_ISOCHRONOUS: 592 for (i = 0; i < UGEN_NISOREQS; ++i) 593 usbd_destroy_xfer(sce->isoreqs[i].xfer); 594 msize = isize * UGEN_NISOFRAMES; 595 break; 596 case UE_BULK: 597 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 598 usbd_destroy_xfer(sce->ra_wb_xfer); 599 msize = sce->ra_wb_bufsize; 600 } 601 break; 602 default: 603 break; 604 } 605 usbd_close_pipe(sce->pipeh); 606 sce->pipeh = NULL; 607 if (sce->ibuf != NULL) { 608 kmem_free(sce->ibuf, msize); 609 sce->ibuf = NULL; 610 } 611 } 612 sc->sc_is_open[endpt] = 0; 613 614 return 0; 615 } 616 617 Static int 618 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 619 { 620 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 621 uint32_t n, tn; 622 struct usbd_xfer *xfer; 623 usbd_status err; 624 int error = 0; 625 626 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 627 628 if (endpt == USB_CONTROL_ENDPOINT) 629 return ENODEV; 630 631 #ifdef DIAGNOSTIC 632 if (sce->edesc == NULL) { 633 printf("ugenread: no edesc\n"); 634 return EIO; 635 } 636 if (sce->pipeh == NULL) { 637 printf("ugenread: no pipe\n"); 638 return EIO; 639 } 640 #endif 641 642 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 643 case UE_INTERRUPT: 644 /* Block until activity occurred. */ 645 mutex_enter(&sc->sc_lock); 646 while (sce->q.c_cc == 0) { 647 if (flag & IO_NDELAY) { 648 mutex_exit(&sc->sc_lock); 649 return EWOULDBLOCK; 650 } 651 sce->state |= UGEN_ASLP; 652 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 653 /* "ugenri" */ 654 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 655 mstohz(sce->timeout)); 656 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 657 if (sc->sc_dying) 658 error = EIO; 659 if (error) { 660 sce->state &= ~UGEN_ASLP; 661 break; 662 } 663 } 664 mutex_exit(&sc->sc_lock); 665 666 /* Transfer as many chunks as possible. */ 667 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 668 n = min(sce->q.c_cc, uio->uio_resid); 669 if (n > sizeof(sc->sc_buffer)) 670 n = sizeof(sc->sc_buffer); 671 672 /* Remove a small chunk from the input queue. */ 673 q_to_b(&sce->q, sc->sc_buffer, n); 674 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 675 676 /* Copy the data to the user process. */ 677 error = uiomove(sc->sc_buffer, n, uio); 678 if (error) 679 break; 680 } 681 break; 682 case UE_BULK: 683 if (sce->state & UGEN_BULK_RA) { 684 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 685 uio->uio_resid, sce->ra_wb_used)); 686 xfer = sce->ra_wb_xfer; 687 688 mutex_enter(&sc->sc_lock); 689 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 690 mutex_exit(&sc->sc_lock); 691 return EWOULDBLOCK; 692 } 693 while (uio->uio_resid > 0 && !error) { 694 while (sce->ra_wb_used == 0) { 695 sce->state |= UGEN_ASLP; 696 DPRINTFN(5, 697 ("ugenread: sleep on %p\n", 698 sce)); 699 /* "ugenrb" */ 700 error = cv_timedwait_sig(&sce->cv, 701 &sc->sc_lock, mstohz(sce->timeout)); 702 DPRINTFN(5, 703 ("ugenread: woke, error=%d\n", 704 error)); 705 if (sc->sc_dying) 706 error = EIO; 707 if (error) { 708 sce->state &= ~UGEN_ASLP; 709 break; 710 } 711 } 712 713 /* Copy data to the process. */ 714 while (uio->uio_resid > 0 715 && sce->ra_wb_used > 0) { 716 n = min(uio->uio_resid, 717 sce->ra_wb_used); 718 n = min(n, sce->limit - sce->cur); 719 error = uiomove(sce->cur, n, uio); 720 if (error) 721 break; 722 sce->cur += n; 723 sce->ra_wb_used -= n; 724 if (sce->cur == sce->limit) 725 sce->cur = sce->ibuf; 726 } 727 728 /* 729 * If the transfers stopped because the 730 * buffer was full, restart them. 731 */ 732 if (sce->state & UGEN_RA_WB_STOP && 733 sce->ra_wb_used < sce->limit - sce->ibuf) { 734 n = (sce->limit - sce->ibuf) 735 - sce->ra_wb_used; 736 usbd_setup_xfer(xfer, sce, NULL, 737 min(n, sce->ra_wb_xferlen), 738 0, USBD_NO_TIMEOUT, 739 ugen_bulkra_intr); 740 sce->state &= ~UGEN_RA_WB_STOP; 741 err = usbd_transfer(xfer); 742 if (err != USBD_IN_PROGRESS) 743 /* 744 * The transfer has not been 745 * queued. Setting STOP 746 * will make us try 747 * again at the next read. 748 */ 749 sce->state |= UGEN_RA_WB_STOP; 750 } 751 } 752 mutex_exit(&sc->sc_lock); 753 break; 754 } 755 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 756 0, 0, &xfer); 757 if (error) 758 return error; 759 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 760 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 761 tn = n; 762 err = usbd_bulk_transfer(xfer, sce->pipeh, 763 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 764 sce->timeout, sc->sc_buffer, &tn); 765 if (err) { 766 if (err == USBD_INTERRUPTED) 767 error = EINTR; 768 else if (err == USBD_TIMEOUT) 769 error = ETIMEDOUT; 770 else 771 error = EIO; 772 break; 773 } 774 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 775 error = uiomove(sc->sc_buffer, tn, uio); 776 if (error || tn < n) 777 break; 778 } 779 usbd_destroy_xfer(xfer); 780 break; 781 case UE_ISOCHRONOUS: 782 mutex_enter(&sc->sc_lock); 783 while (sce->cur == sce->fill) { 784 if (flag & IO_NDELAY) { 785 mutex_exit(&sc->sc_lock); 786 return EWOULDBLOCK; 787 } 788 sce->state |= UGEN_ASLP; 789 /* "ugenri" */ 790 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 791 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 792 mstohz(sce->timeout)); 793 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 794 if (sc->sc_dying) 795 error = EIO; 796 if (error) { 797 sce->state &= ~UGEN_ASLP; 798 break; 799 } 800 } 801 802 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 803 if(sce->fill > sce->cur) 804 n = min(sce->fill - sce->cur, uio->uio_resid); 805 else 806 n = min(sce->limit - sce->cur, uio->uio_resid); 807 808 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 809 810 /* Copy the data to the user process. */ 811 error = uiomove(sce->cur, n, uio); 812 if (error) 813 break; 814 sce->cur += n; 815 if (sce->cur >= sce->limit) 816 sce->cur = sce->ibuf; 817 } 818 mutex_exit(&sc->sc_lock); 819 break; 820 821 822 default: 823 return ENXIO; 824 } 825 return error; 826 } 827 828 int 829 ugenread(dev_t dev, struct uio *uio, int flag) 830 { 831 int endpt = UGENENDPOINT(dev); 832 struct ugen_softc *sc; 833 int error; 834 835 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 836 if (sc == NULL || sc->sc_dying) 837 return ENXIO; 838 839 mutex_enter(&sc->sc_lock); 840 sc->sc_refcnt++; 841 mutex_exit(&sc->sc_lock); 842 843 error = ugen_do_read(sc, endpt, uio, flag); 844 845 mutex_enter(&sc->sc_lock); 846 if (--sc->sc_refcnt < 0) 847 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 848 mutex_exit(&sc->sc_lock); 849 850 return error; 851 } 852 853 Static int 854 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 855 int flag) 856 { 857 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 858 uint32_t n; 859 int error = 0; 860 uint32_t tn; 861 char *dbuf; 862 struct usbd_xfer *xfer; 863 usbd_status err; 864 865 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 866 867 if (endpt == USB_CONTROL_ENDPOINT) 868 return ENODEV; 869 870 #ifdef DIAGNOSTIC 871 if (sce->edesc == NULL) { 872 printf("ugenwrite: no edesc\n"); 873 return EIO; 874 } 875 if (sce->pipeh == NULL) { 876 printf("ugenwrite: no pipe\n"); 877 return EIO; 878 } 879 #endif 880 881 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 882 case UE_BULK: 883 if (sce->state & UGEN_BULK_WB) { 884 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 885 uio->uio_resid, sce->ra_wb_used)); 886 xfer = sce->ra_wb_xfer; 887 888 mutex_enter(&sc->sc_lock); 889 if (sce->ra_wb_used == sce->limit - sce->ibuf && 890 flag & IO_NDELAY) { 891 mutex_exit(&sc->sc_lock); 892 return EWOULDBLOCK; 893 } 894 while (uio->uio_resid > 0 && !error) { 895 while (sce->ra_wb_used == 896 sce->limit - sce->ibuf) { 897 sce->state |= UGEN_ASLP; 898 DPRINTFN(5, 899 ("ugenwrite: sleep on %p\n", 900 sce)); 901 /* "ugenwb" */ 902 error = cv_timedwait_sig(&sce->cv, 903 &sc->sc_lock, mstohz(sce->timeout)); 904 DPRINTFN(5, 905 ("ugenwrite: woke, error=%d\n", 906 error)); 907 if (sc->sc_dying) 908 error = EIO; 909 if (error) { 910 sce->state &= ~UGEN_ASLP; 911 break; 912 } 913 } 914 915 /* Copy data from the process. */ 916 while (uio->uio_resid > 0 && 917 sce->ra_wb_used < sce->limit - sce->ibuf) { 918 n = min(uio->uio_resid, 919 (sce->limit - sce->ibuf) 920 - sce->ra_wb_used); 921 n = min(n, sce->limit - sce->fill); 922 error = uiomove(sce->fill, n, uio); 923 if (error) 924 break; 925 sce->fill += n; 926 sce->ra_wb_used += n; 927 if (sce->fill == sce->limit) 928 sce->fill = sce->ibuf; 929 } 930 931 /* 932 * If the transfers stopped because the 933 * buffer was empty, restart them. 934 */ 935 if (sce->state & UGEN_RA_WB_STOP && 936 sce->ra_wb_used > 0) { 937 dbuf = (char *)usbd_get_buffer(xfer); 938 n = min(sce->ra_wb_used, 939 sce->ra_wb_xferlen); 940 tn = min(n, sce->limit - sce->cur); 941 memcpy(dbuf, sce->cur, tn); 942 dbuf += tn; 943 if (n - tn > 0) 944 memcpy(dbuf, sce->ibuf, 945 n - tn); 946 usbd_setup_xfer(xfer, sce, NULL, n, 947 0, USBD_NO_TIMEOUT, 948 ugen_bulkwb_intr); 949 sce->state &= ~UGEN_RA_WB_STOP; 950 err = usbd_transfer(xfer); 951 if (err != USBD_IN_PROGRESS) 952 /* 953 * The transfer has not been 954 * queued. Setting STOP 955 * will make us try again 956 * at the next read. 957 */ 958 sce->state |= UGEN_RA_WB_STOP; 959 } 960 } 961 mutex_exit(&sc->sc_lock); 962 break; 963 } 964 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 965 0, 0, &xfer); 966 if (error) 967 return error; 968 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 969 error = uiomove(sc->sc_buffer, n, uio); 970 if (error) 971 break; 972 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 973 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 974 sc->sc_buffer, &n); 975 if (err) { 976 if (err == USBD_INTERRUPTED) 977 error = EINTR; 978 else if (err == USBD_TIMEOUT) 979 error = ETIMEDOUT; 980 else 981 error = EIO; 982 break; 983 } 984 } 985 usbd_destroy_xfer(xfer); 986 break; 987 case UE_INTERRUPT: 988 error = usbd_create_xfer(sce->pipeh, 989 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 990 if (error) 991 return error; 992 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 993 uio->uio_resid)) != 0) { 994 error = uiomove(sc->sc_buffer, n, uio); 995 if (error) 996 break; 997 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 998 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 999 sce->timeout, sc->sc_buffer, &n); 1000 if (err) { 1001 if (err == USBD_INTERRUPTED) 1002 error = EINTR; 1003 else if (err == USBD_TIMEOUT) 1004 error = ETIMEDOUT; 1005 else 1006 error = EIO; 1007 break; 1008 } 1009 } 1010 usbd_destroy_xfer(xfer); 1011 break; 1012 default: 1013 return ENXIO; 1014 } 1015 return error; 1016 } 1017 1018 int 1019 ugenwrite(dev_t dev, struct uio *uio, int flag) 1020 { 1021 int endpt = UGENENDPOINT(dev); 1022 struct ugen_softc *sc; 1023 int error; 1024 1025 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1026 if (sc == NULL || sc->sc_dying) 1027 return ENXIO; 1028 1029 mutex_enter(&sc->sc_lock); 1030 sc->sc_refcnt++; 1031 mutex_exit(&sc->sc_lock); 1032 1033 error = ugen_do_write(sc, endpt, uio, flag); 1034 1035 mutex_enter(&sc->sc_lock); 1036 if (--sc->sc_refcnt < 0) 1037 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1038 mutex_exit(&sc->sc_lock); 1039 1040 return error; 1041 } 1042 1043 int 1044 ugen_activate(device_t self, enum devact act) 1045 { 1046 struct ugen_softc *sc = device_private(self); 1047 1048 switch (act) { 1049 case DVACT_DEACTIVATE: 1050 sc->sc_dying = 1; 1051 return 0; 1052 default: 1053 return EOPNOTSUPP; 1054 } 1055 } 1056 1057 int 1058 ugen_detach(device_t self, int flags) 1059 { 1060 struct ugen_softc *sc = device_private(self); 1061 struct ugen_endpoint *sce; 1062 int i, dir; 1063 int maj, mn; 1064 1065 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1066 1067 sc->sc_dying = 1; 1068 pmf_device_deregister(self); 1069 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1070 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1071 for (dir = OUT; dir <= IN; dir++) { 1072 sce = &sc->sc_endpoints[i][dir]; 1073 if (sce->pipeh) 1074 usbd_abort_pipe(sce->pipeh); 1075 } 1076 } 1077 1078 mutex_enter(&sc->sc_lock); 1079 if (--sc->sc_refcnt >= 0) { 1080 /* Wake everyone */ 1081 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1082 cv_signal(&sc->sc_endpoints[i][IN].cv); 1083 /* Wait for processes to go away. */ 1084 usb_detach_wait(sc->sc_dev, &sc->sc_detach_cv, &sc->sc_lock); 1085 } 1086 mutex_exit(&sc->sc_lock); 1087 1088 /* locate the major number */ 1089 maj = cdevsw_lookup_major(&ugen_cdevsw); 1090 1091 /* Nuke the vnodes for any open instances (calls close). */ 1092 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1093 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1094 1095 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1096 1097 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1098 for (dir = OUT; dir <= IN; dir++) { 1099 sce = &sc->sc_endpoints[i][dir]; 1100 seldestroy(&sce->rsel); 1101 cv_destroy(&sce->cv); 1102 } 1103 } 1104 1105 cv_destroy(&sc->sc_detach_cv); 1106 mutex_destroy(&sc->sc_lock); 1107 1108 return 0; 1109 } 1110 1111 Static void 1112 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1113 { 1114 struct ugen_endpoint *sce = addr; 1115 struct ugen_softc *sc = sce->sc; 1116 uint32_t count; 1117 u_char *ibuf; 1118 1119 if (status == USBD_CANCELLED) 1120 return; 1121 1122 if (status != USBD_NORMAL_COMPLETION) { 1123 DPRINTF(("ugenintr: status=%d\n", status)); 1124 if (status == USBD_STALLED) 1125 usbd_clear_endpoint_stall_async(sce->pipeh); 1126 return; 1127 } 1128 1129 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1130 ibuf = sce->ibuf; 1131 1132 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1133 xfer, status, count)); 1134 DPRINTFN(5, (" data = %02x %02x %02x\n", 1135 ibuf[0], ibuf[1], ibuf[2])); 1136 1137 (void)b_to_q(ibuf, count, &sce->q); 1138 1139 mutex_enter(&sc->sc_lock); 1140 if (sce->state & UGEN_ASLP) { 1141 sce->state &= ~UGEN_ASLP; 1142 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1143 cv_signal(&sce->cv); 1144 } 1145 mutex_exit(&sc->sc_lock); 1146 selnotify(&sce->rsel, 0, 0); 1147 } 1148 1149 Static void 1150 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1151 usbd_status status) 1152 { 1153 struct isoreq *req = addr; 1154 struct ugen_endpoint *sce = req->sce; 1155 struct ugen_softc *sc = sce->sc; 1156 uint32_t count, n; 1157 int i, isize; 1158 1159 /* Return if we are aborting. */ 1160 if (status == USBD_CANCELLED) 1161 return; 1162 1163 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1164 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1165 (long)(req - sce->isoreqs), count)); 1166 1167 /* throw away oldest input if the buffer is full */ 1168 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1169 sce->cur += count; 1170 if(sce->cur >= sce->limit) 1171 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1172 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1173 count)); 1174 } 1175 1176 isize = UGETW(sce->edesc->wMaxPacketSize); 1177 for (i = 0; i < UGEN_NISORFRMS; i++) { 1178 uint32_t actlen = req->sizes[i]; 1179 char const *tbuf = (char const *)req->dmabuf + isize * i; 1180 1181 /* copy data to buffer */ 1182 while (actlen > 0) { 1183 n = min(actlen, sce->limit - sce->fill); 1184 memcpy(sce->fill, tbuf, n); 1185 1186 tbuf += n; 1187 actlen -= n; 1188 sce->fill += n; 1189 if(sce->fill == sce->limit) 1190 sce->fill = sce->ibuf; 1191 } 1192 1193 /* setup size for next transfer */ 1194 req->sizes[i] = isize; 1195 } 1196 1197 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1198 ugen_isoc_rintr); 1199 (void)usbd_transfer(xfer); 1200 1201 mutex_enter(&sc->sc_lock); 1202 if (sce->state & UGEN_ASLP) { 1203 sce->state &= ~UGEN_ASLP; 1204 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1205 cv_signal(&sce->cv); 1206 } 1207 mutex_exit(&sc->sc_lock); 1208 selnotify(&sce->rsel, 0, 0); 1209 } 1210 1211 Static void 1212 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1213 usbd_status status) 1214 { 1215 struct ugen_endpoint *sce = addr; 1216 struct ugen_softc *sc = sce->sc; 1217 uint32_t count, n; 1218 char const *tbuf; 1219 usbd_status err; 1220 1221 /* Return if we are aborting. */ 1222 if (status == USBD_CANCELLED) 1223 return; 1224 1225 if (status != USBD_NORMAL_COMPLETION) { 1226 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1227 sce->state |= UGEN_RA_WB_STOP; 1228 if (status == USBD_STALLED) 1229 usbd_clear_endpoint_stall_async(sce->pipeh); 1230 return; 1231 } 1232 1233 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1234 1235 /* Keep track of how much is in the buffer. */ 1236 sce->ra_wb_used += count; 1237 1238 /* Copy data to buffer. */ 1239 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1240 n = min(count, sce->limit - sce->fill); 1241 memcpy(sce->fill, tbuf, n); 1242 tbuf += n; 1243 count -= n; 1244 sce->fill += n; 1245 if (sce->fill == sce->limit) 1246 sce->fill = sce->ibuf; 1247 if (count > 0) { 1248 memcpy(sce->fill, tbuf, count); 1249 sce->fill += count; 1250 } 1251 1252 /* Set up the next request if necessary. */ 1253 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1254 if (n > 0) { 1255 usbd_setup_xfer(xfer, sce, NULL, min(n, sce->ra_wb_xferlen), 0, 1256 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1257 err = usbd_transfer(xfer); 1258 if (err != USBD_IN_PROGRESS) { 1259 printf("usbd_bulkra_intr: error=%d\n", err); 1260 /* 1261 * The transfer has not been queued. Setting STOP 1262 * will make us try again at the next read. 1263 */ 1264 sce->state |= UGEN_RA_WB_STOP; 1265 } 1266 } 1267 else 1268 sce->state |= UGEN_RA_WB_STOP; 1269 1270 mutex_enter(&sc->sc_lock); 1271 if (sce->state & UGEN_ASLP) { 1272 sce->state &= ~UGEN_ASLP; 1273 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1274 cv_signal(&sce->cv); 1275 } 1276 mutex_exit(&sc->sc_lock); 1277 selnotify(&sce->rsel, 0, 0); 1278 } 1279 1280 Static void 1281 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1282 usbd_status status) 1283 { 1284 struct ugen_endpoint *sce = addr; 1285 struct ugen_softc *sc = sce->sc; 1286 uint32_t count, n; 1287 char *tbuf; 1288 usbd_status err; 1289 1290 /* Return if we are aborting. */ 1291 if (status == USBD_CANCELLED) 1292 return; 1293 1294 if (status != USBD_NORMAL_COMPLETION) { 1295 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1296 sce->state |= UGEN_RA_WB_STOP; 1297 if (status == USBD_STALLED) 1298 usbd_clear_endpoint_stall_async(sce->pipeh); 1299 return; 1300 } 1301 1302 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1303 1304 /* Keep track of how much is in the buffer. */ 1305 sce->ra_wb_used -= count; 1306 1307 /* Update buffer pointers. */ 1308 sce->cur += count; 1309 if (sce->cur >= sce->limit) 1310 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1311 1312 /* Set up next request if necessary. */ 1313 if (sce->ra_wb_used > 0) { 1314 /* copy data from buffer */ 1315 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1316 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1317 n = min(count, sce->limit - sce->cur); 1318 memcpy(tbuf, sce->cur, n); 1319 tbuf += n; 1320 if (count - n > 0) 1321 memcpy(tbuf, sce->ibuf, count - n); 1322 1323 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1324 ugen_bulkwb_intr); 1325 err = usbd_transfer(xfer); 1326 if (err != USBD_IN_PROGRESS) { 1327 printf("usbd_bulkwb_intr: error=%d\n", err); 1328 /* 1329 * The transfer has not been queued. Setting STOP 1330 * will make us try again at the next write. 1331 */ 1332 sce->state |= UGEN_RA_WB_STOP; 1333 } 1334 } 1335 else 1336 sce->state |= UGEN_RA_WB_STOP; 1337 1338 mutex_enter(&sc->sc_lock); 1339 if (sce->state & UGEN_ASLP) { 1340 sce->state &= ~UGEN_ASLP; 1341 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1342 cv_signal(&sce->cv); 1343 } 1344 mutex_exit(&sc->sc_lock); 1345 selnotify(&sce->rsel, 0, 0); 1346 } 1347 1348 Static usbd_status 1349 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1350 { 1351 struct usbd_interface *iface; 1352 usb_endpoint_descriptor_t *ed; 1353 usbd_status err; 1354 struct ugen_endpoint *sce; 1355 uint8_t niface, nendpt, endptno, endpt; 1356 int dir; 1357 1358 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1359 1360 err = usbd_interface_count(sc->sc_udev, &niface); 1361 if (err) 1362 return err; 1363 if (ifaceidx < 0 || ifaceidx >= niface) 1364 return USBD_INVAL; 1365 1366 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1367 if (err) 1368 return err; 1369 err = usbd_endpoint_count(iface, &nendpt); 1370 if (err) 1371 return err; 1372 1373 /* change setting */ 1374 err = usbd_set_interface(iface, altno); 1375 if (err) 1376 return err; 1377 1378 err = usbd_endpoint_count(iface, &nendpt); 1379 if (err) 1380 return err; 1381 1382 ugen_clear_endpoints(sc); 1383 1384 for (endptno = 0; endptno < nendpt; endptno++) { 1385 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1386 KASSERT(ed != NULL); 1387 endpt = ed->bEndpointAddress; 1388 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1389 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1390 sce->sc = sc; 1391 sce->edesc = ed; 1392 sce->iface = iface; 1393 } 1394 return 0; 1395 } 1396 1397 /* Retrieve a complete descriptor for a certain device and index. */ 1398 Static usb_config_descriptor_t * 1399 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1400 { 1401 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1402 int len; 1403 usbd_status err; 1404 1405 if (index == USB_CURRENT_CONFIG_INDEX) { 1406 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1407 len = UGETW(tdesc->wTotalLength); 1408 if (lenp) 1409 *lenp = len; 1410 cdesc = kmem_alloc(len, KM_SLEEP); 1411 memcpy(cdesc, tdesc, len); 1412 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1413 } else { 1414 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1415 if (err) 1416 return 0; 1417 len = UGETW(cdescr.wTotalLength); 1418 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1419 if (lenp) 1420 *lenp = len; 1421 cdesc = kmem_alloc(len, KM_SLEEP); 1422 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1423 if (err) { 1424 kmem_free(cdesc, len); 1425 return 0; 1426 } 1427 } 1428 return cdesc; 1429 } 1430 1431 Static int 1432 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1433 { 1434 struct usbd_interface *iface; 1435 usbd_status err; 1436 1437 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1438 if (err) 1439 return -1; 1440 return usbd_get_interface_altindex(iface); 1441 } 1442 1443 Static int 1444 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1445 void *addr, int flag, struct lwp *l) 1446 { 1447 struct ugen_endpoint *sce; 1448 usbd_status err; 1449 struct usbd_interface *iface; 1450 struct usb_config_desc *cd; 1451 usb_config_descriptor_t *cdesc; 1452 struct usb_interface_desc *id; 1453 usb_interface_descriptor_t *idesc; 1454 struct usb_endpoint_desc *ed; 1455 usb_endpoint_descriptor_t *edesc; 1456 struct usb_alt_interface *ai; 1457 struct usb_string_desc *si; 1458 uint8_t conf, alt; 1459 int cdesclen; 1460 int error; 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 sce = &sc->sc_endpoints[endpt][IN]; 1484 if (sce == NULL 1485 /* XXX this shouldn't happen, but the distinction between 1486 input and output pipes isn't clear enough. 1487 || sce->pipeh == NULL */ 1488 ) 1489 return EINVAL; 1490 sce->timeout = *(int *)addr; 1491 return 0; 1492 case USB_SET_BULK_RA: 1493 if (endpt == USB_CONTROL_ENDPOINT) 1494 return EINVAL; 1495 sce = &sc->sc_endpoints[endpt][IN]; 1496 if (sce == NULL || sce->pipeh == NULL) 1497 return EINVAL; 1498 edesc = sce->edesc; 1499 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1500 return EINVAL; 1501 1502 if (*(int *)addr) { 1503 /* Only turn RA on if it's currently off. */ 1504 if (sce->state & UGEN_BULK_RA) 1505 return 0; 1506 1507 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1508 /* shouldn't happen */ 1509 return EINVAL; 1510 error = usbd_create_xfer(sce->pipeh, 1511 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1512 if (error) 1513 return error; 1514 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1515 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1516 sce->fill = sce->cur = sce->ibuf; 1517 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1518 sce->ra_wb_used = 0; 1519 sce->state |= UGEN_BULK_RA; 1520 sce->state &= ~UGEN_RA_WB_STOP; 1521 /* Now start reading. */ 1522 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1523 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1524 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1525 err = usbd_transfer(sce->ra_wb_xfer); 1526 if (err != USBD_IN_PROGRESS) { 1527 sce->state &= ~UGEN_BULK_RA; 1528 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1529 sce->ibuf = NULL; 1530 usbd_destroy_xfer(sce->ra_wb_xfer); 1531 return EIO; 1532 } 1533 } else { 1534 /* Only turn RA off if it's currently on. */ 1535 if (!(sce->state & UGEN_BULK_RA)) 1536 return 0; 1537 1538 sce->state &= ~UGEN_BULK_RA; 1539 usbd_abort_pipe(sce->pipeh); 1540 usbd_destroy_xfer(sce->ra_wb_xfer); 1541 /* 1542 * XXX Discard whatever's in the buffer, but we 1543 * should keep it around and drain the buffer 1544 * instead. 1545 */ 1546 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1547 sce->ibuf = NULL; 1548 } 1549 return 0; 1550 case USB_SET_BULK_WB: 1551 if (endpt == USB_CONTROL_ENDPOINT) 1552 return EINVAL; 1553 sce = &sc->sc_endpoints[endpt][OUT]; 1554 if (sce == NULL || sce->pipeh == NULL) 1555 return EINVAL; 1556 edesc = sce->edesc; 1557 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1558 return EINVAL; 1559 1560 if (*(int *)addr) { 1561 /* Only turn WB on if it's currently off. */ 1562 if (sce->state & UGEN_BULK_WB) 1563 return 0; 1564 1565 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1566 /* shouldn't happen */ 1567 return EINVAL; 1568 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1569 0, 0, &sce->ra_wb_xfer); 1570 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1571 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1572 sce->fill = sce->cur = sce->ibuf; 1573 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1574 sce->ra_wb_used = 0; 1575 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1576 } else { 1577 /* Only turn WB off if it's currently on. */ 1578 if (!(sce->state & UGEN_BULK_WB)) 1579 return 0; 1580 1581 sce->state &= ~UGEN_BULK_WB; 1582 /* 1583 * XXX Discard whatever's in the buffer, but we 1584 * should keep it around and keep writing to 1585 * drain the buffer instead. 1586 */ 1587 usbd_abort_pipe(sce->pipeh); 1588 usbd_destroy_xfer(sce->ra_wb_xfer); 1589 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1590 sce->ibuf = NULL; 1591 } 1592 return 0; 1593 case USB_SET_BULK_RA_OPT: 1594 case USB_SET_BULK_WB_OPT: 1595 { 1596 struct usb_bulk_ra_wb_opt *opt; 1597 1598 if (endpt == USB_CONTROL_ENDPOINT) 1599 return EINVAL; 1600 opt = (struct usb_bulk_ra_wb_opt *)addr; 1601 if (cmd == USB_SET_BULK_RA_OPT) 1602 sce = &sc->sc_endpoints[endpt][IN]; 1603 else 1604 sce = &sc->sc_endpoints[endpt][OUT]; 1605 if (sce == NULL || sce->pipeh == NULL) 1606 return EINVAL; 1607 if (opt->ra_wb_buffer_size < 1 || 1608 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1609 opt->ra_wb_request_size < 1 || 1610 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1611 return EINVAL; 1612 /* 1613 * XXX These changes do not take effect until the 1614 * next time RA/WB mode is enabled but they ought to 1615 * take effect immediately. 1616 */ 1617 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1618 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1619 return 0; 1620 } 1621 default: 1622 break; 1623 } 1624 1625 if (endpt != USB_CONTROL_ENDPOINT) 1626 return EINVAL; 1627 1628 switch (cmd) { 1629 #ifdef UGEN_DEBUG 1630 case USB_SETDEBUG: 1631 ugendebug = *(int *)addr; 1632 break; 1633 #endif 1634 case USB_GET_CONFIG: 1635 err = usbd_get_config(sc->sc_udev, &conf); 1636 if (err) 1637 return EIO; 1638 *(int *)addr = conf; 1639 break; 1640 case USB_SET_CONFIG: 1641 if (!(flag & FWRITE)) 1642 return EPERM; 1643 err = ugen_set_config(sc, *(int *)addr, 1); 1644 switch (err) { 1645 case USBD_NORMAL_COMPLETION: 1646 break; 1647 case USBD_IN_USE: 1648 return EBUSY; 1649 default: 1650 return EIO; 1651 } 1652 break; 1653 case USB_GET_ALTINTERFACE: 1654 ai = (struct usb_alt_interface *)addr; 1655 err = usbd_device2interface_handle(sc->sc_udev, 1656 ai->uai_interface_index, &iface); 1657 if (err) 1658 return EINVAL; 1659 idesc = usbd_get_interface_descriptor(iface); 1660 if (idesc == NULL) 1661 return EIO; 1662 ai->uai_alt_no = idesc->bAlternateSetting; 1663 break; 1664 case USB_SET_ALTINTERFACE: 1665 if (!(flag & FWRITE)) 1666 return EPERM; 1667 ai = (struct usb_alt_interface *)addr; 1668 err = usbd_device2interface_handle(sc->sc_udev, 1669 ai->uai_interface_index, &iface); 1670 if (err) 1671 return EINVAL; 1672 err = ugen_set_interface(sc, ai->uai_interface_index, 1673 ai->uai_alt_no); 1674 if (err) 1675 return EINVAL; 1676 break; 1677 case USB_GET_NO_ALT: 1678 ai = (struct usb_alt_interface *)addr; 1679 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1680 if (cdesc == NULL) 1681 return EINVAL; 1682 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1683 if (idesc == NULL) { 1684 kmem_free(cdesc, cdesclen); 1685 return EINVAL; 1686 } 1687 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1688 idesc->bInterfaceNumber); 1689 kmem_free(cdesc, cdesclen); 1690 break; 1691 case USB_GET_DEVICE_DESC: 1692 *(usb_device_descriptor_t *)addr = 1693 *usbd_get_device_descriptor(sc->sc_udev); 1694 break; 1695 case USB_GET_CONFIG_DESC: 1696 cd = (struct usb_config_desc *)addr; 1697 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1698 if (cdesc == NULL) 1699 return EINVAL; 1700 cd->ucd_desc = *cdesc; 1701 kmem_free(cdesc, cdesclen); 1702 break; 1703 case USB_GET_INTERFACE_DESC: 1704 id = (struct usb_interface_desc *)addr; 1705 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1706 if (cdesc == NULL) 1707 return EINVAL; 1708 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1709 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1710 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1711 else 1712 alt = id->uid_alt_index; 1713 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1714 if (idesc == NULL) { 1715 kmem_free(cdesc, cdesclen); 1716 return EINVAL; 1717 } 1718 id->uid_desc = *idesc; 1719 kmem_free(cdesc, cdesclen); 1720 break; 1721 case USB_GET_ENDPOINT_DESC: 1722 ed = (struct usb_endpoint_desc *)addr; 1723 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1724 if (cdesc == NULL) 1725 return EINVAL; 1726 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1727 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1728 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1729 else 1730 alt = ed->ued_alt_index; 1731 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1732 alt, ed->ued_endpoint_index); 1733 if (edesc == NULL) { 1734 kmem_free(cdesc, cdesclen); 1735 return EINVAL; 1736 } 1737 ed->ued_desc = *edesc; 1738 kmem_free(cdesc, cdesclen); 1739 break; 1740 case USB_GET_FULL_DESC: 1741 { 1742 int len; 1743 struct iovec iov; 1744 struct uio uio; 1745 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1746 1747 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1748 if (cdesc == NULL) 1749 return EINVAL; 1750 len = cdesclen; 1751 if (len > fd->ufd_size) 1752 len = fd->ufd_size; 1753 iov.iov_base = (void *)fd->ufd_data; 1754 iov.iov_len = len; 1755 uio.uio_iov = &iov; 1756 uio.uio_iovcnt = 1; 1757 uio.uio_resid = len; 1758 uio.uio_offset = 0; 1759 uio.uio_rw = UIO_READ; 1760 uio.uio_vmspace = l->l_proc->p_vmspace; 1761 error = uiomove((void *)cdesc, len, &uio); 1762 kmem_free(cdesc, cdesclen); 1763 return error; 1764 } 1765 case USB_GET_STRING_DESC: { 1766 int len; 1767 si = (struct usb_string_desc *)addr; 1768 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1769 si->usd_language_id, &si->usd_desc, &len); 1770 if (err) 1771 return EINVAL; 1772 break; 1773 } 1774 case USB_DO_REQUEST: 1775 { 1776 struct usb_ctl_request *ur = (void *)addr; 1777 int len = UGETW(ur->ucr_request.wLength); 1778 struct iovec iov; 1779 struct uio uio; 1780 void *ptr = 0; 1781 usbd_status xerr; 1782 1783 error = 0; 1784 1785 if (!(flag & FWRITE)) 1786 return EPERM; 1787 /* Avoid requests that would damage the bus integrity. */ 1788 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1789 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1790 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1791 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1792 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1793 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1794 return EINVAL; 1795 1796 if (len < 0 || len > 32767) 1797 return EINVAL; 1798 if (len != 0) { 1799 iov.iov_base = (void *)ur->ucr_data; 1800 iov.iov_len = len; 1801 uio.uio_iov = &iov; 1802 uio.uio_iovcnt = 1; 1803 uio.uio_resid = len; 1804 uio.uio_offset = 0; 1805 uio.uio_rw = 1806 ur->ucr_request.bmRequestType & UT_READ ? 1807 UIO_READ : UIO_WRITE; 1808 uio.uio_vmspace = l->l_proc->p_vmspace; 1809 ptr = kmem_alloc(len, KM_SLEEP); 1810 if (uio.uio_rw == UIO_WRITE) { 1811 error = uiomove(ptr, len, &uio); 1812 if (error) 1813 goto ret; 1814 } 1815 } 1816 sce = &sc->sc_endpoints[endpt][IN]; 1817 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1818 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1819 if (xerr) { 1820 error = EIO; 1821 goto ret; 1822 } 1823 if (len != 0) { 1824 if (uio.uio_rw == UIO_READ) { 1825 size_t alen = min(len, ur->ucr_actlen); 1826 error = uiomove(ptr, alen, &uio); 1827 if (error) 1828 goto ret; 1829 } 1830 } 1831 ret: 1832 if (ptr) 1833 kmem_free(ptr, len); 1834 return error; 1835 } 1836 case USB_GET_DEVICEINFO: 1837 usbd_fill_deviceinfo(sc->sc_udev, 1838 (struct usb_device_info *)addr, 0); 1839 break; 1840 #ifdef COMPAT_30 1841 case USB_GET_DEVICEINFO_OLD: 1842 usbd_fill_deviceinfo_old(sc->sc_udev, 1843 (struct usb_device_info_old *)addr, 0); 1844 1845 break; 1846 #endif 1847 default: 1848 return EINVAL; 1849 } 1850 return 0; 1851 } 1852 1853 int 1854 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1855 { 1856 int endpt = UGENENDPOINT(dev); 1857 struct ugen_softc *sc; 1858 int error; 1859 1860 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1861 if (sc == NULL || sc->sc_dying) 1862 return ENXIO; 1863 1864 sc->sc_refcnt++; 1865 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1866 if (--sc->sc_refcnt < 0) 1867 usb_detach_broadcast(sc->sc_dev, &sc->sc_detach_cv); 1868 return error; 1869 } 1870 1871 int 1872 ugenpoll(dev_t dev, int events, struct lwp *l) 1873 { 1874 struct ugen_softc *sc; 1875 struct ugen_endpoint *sce_in, *sce_out; 1876 int revents = 0; 1877 1878 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1879 if (sc == NULL) 1880 return ENXIO; 1881 1882 if (sc->sc_dying) 1883 return POLLHUP; 1884 1885 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1886 return ENODEV; 1887 1888 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1889 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1890 if (sce_in == NULL && sce_out == NULL) 1891 return POLLERR; 1892 #ifdef DIAGNOSTIC 1893 if (!sce_in->edesc && !sce_out->edesc) { 1894 printf("ugenpoll: no edesc\n"); 1895 return POLLERR; 1896 } 1897 /* It's possible to have only one pipe open. */ 1898 if (!sce_in->pipeh && !sce_out->pipeh) { 1899 printf("ugenpoll: no pipe\n"); 1900 return POLLERR; 1901 } 1902 #endif 1903 1904 mutex_enter(&sc->sc_lock); 1905 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1906 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1907 case UE_INTERRUPT: 1908 if (sce_in->q.c_cc > 0) 1909 revents |= events & (POLLIN | POLLRDNORM); 1910 else 1911 selrecord(l, &sce_in->rsel); 1912 break; 1913 case UE_ISOCHRONOUS: 1914 if (sce_in->cur != sce_in->fill) 1915 revents |= events & (POLLIN | POLLRDNORM); 1916 else 1917 selrecord(l, &sce_in->rsel); 1918 break; 1919 case UE_BULK: 1920 if (sce_in->state & UGEN_BULK_RA) { 1921 if (sce_in->ra_wb_used > 0) 1922 revents |= events & 1923 (POLLIN | POLLRDNORM); 1924 else 1925 selrecord(l, &sce_in->rsel); 1926 break; 1927 } 1928 /* 1929 * We have no easy way of determining if a read will 1930 * yield any data or a write will happen. 1931 * Pretend they will. 1932 */ 1933 revents |= events & (POLLIN | POLLRDNORM); 1934 break; 1935 default: 1936 break; 1937 } 1938 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1939 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1940 case UE_INTERRUPT: 1941 case UE_ISOCHRONOUS: 1942 /* XXX unimplemented */ 1943 break; 1944 case UE_BULK: 1945 if (sce_out->state & UGEN_BULK_WB) { 1946 if (sce_out->ra_wb_used < 1947 sce_out->limit - sce_out->ibuf) 1948 revents |= events & 1949 (POLLOUT | POLLWRNORM); 1950 else 1951 selrecord(l, &sce_out->rsel); 1952 break; 1953 } 1954 /* 1955 * We have no easy way of determining if a read will 1956 * yield any data or a write will happen. 1957 * Pretend they will. 1958 */ 1959 revents |= events & (POLLOUT | POLLWRNORM); 1960 break; 1961 default: 1962 break; 1963 } 1964 1965 mutex_exit(&sc->sc_lock); 1966 1967 return revents; 1968 } 1969 1970 static void 1971 filt_ugenrdetach(struct knote *kn) 1972 { 1973 struct ugen_endpoint *sce = kn->kn_hook; 1974 struct ugen_softc *sc = sce->sc; 1975 1976 mutex_enter(&sc->sc_lock); 1977 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1978 mutex_exit(&sc->sc_lock); 1979 } 1980 1981 static int 1982 filt_ugenread_intr(struct knote *kn, long hint) 1983 { 1984 struct ugen_endpoint *sce = kn->kn_hook; 1985 struct ugen_softc *sc = sce->sc; 1986 1987 if (sc->sc_dying) 1988 return 0; 1989 1990 kn->kn_data = sce->q.c_cc; 1991 return kn->kn_data > 0; 1992 } 1993 1994 static int 1995 filt_ugenread_isoc(struct knote *kn, long hint) 1996 { 1997 struct ugen_endpoint *sce = kn->kn_hook; 1998 struct ugen_softc *sc = sce->sc; 1999 2000 if (sc->sc_dying) 2001 return 0; 2002 2003 if (sce->cur == sce->fill) 2004 return 0; 2005 2006 if (sce->cur < sce->fill) 2007 kn->kn_data = sce->fill - sce->cur; 2008 else 2009 kn->kn_data = (sce->limit - sce->cur) + 2010 (sce->fill - sce->ibuf); 2011 2012 return 1; 2013 } 2014 2015 static int 2016 filt_ugenread_bulk(struct knote *kn, long hint) 2017 { 2018 struct ugen_endpoint *sce = kn->kn_hook; 2019 struct ugen_softc *sc = sce->sc; 2020 2021 if (sc->sc_dying) 2022 return 0; 2023 2024 if (!(sce->state & UGEN_BULK_RA)) 2025 /* 2026 * We have no easy way of determining if a read will 2027 * yield any data or a write will happen. 2028 * So, emulate "seltrue". 2029 */ 2030 return filt_seltrue(kn, hint); 2031 2032 if (sce->ra_wb_used == 0) 2033 return 0; 2034 2035 kn->kn_data = sce->ra_wb_used; 2036 2037 return 1; 2038 } 2039 2040 static int 2041 filt_ugenwrite_bulk(struct knote *kn, long hint) 2042 { 2043 struct ugen_endpoint *sce = kn->kn_hook; 2044 struct ugen_softc *sc = sce->sc; 2045 2046 if (sc->sc_dying) 2047 return 0; 2048 2049 if (!(sce->state & UGEN_BULK_WB)) 2050 /* 2051 * We have no easy way of determining if a read will 2052 * yield any data or a write will happen. 2053 * So, emulate "seltrue". 2054 */ 2055 return filt_seltrue(kn, hint); 2056 2057 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2058 return 0; 2059 2060 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2061 2062 return 1; 2063 } 2064 2065 static const struct filterops ugenread_intr_filtops = { 2066 .f_isfd = 1, 2067 .f_attach = NULL, 2068 .f_detach = filt_ugenrdetach, 2069 .f_event = filt_ugenread_intr, 2070 }; 2071 2072 static const struct filterops ugenread_isoc_filtops = { 2073 .f_isfd = 1, 2074 .f_attach = NULL, 2075 .f_detach = filt_ugenrdetach, 2076 .f_event = filt_ugenread_isoc, 2077 }; 2078 2079 static const struct filterops ugenread_bulk_filtops = { 2080 .f_isfd = 1, 2081 .f_attach = NULL, 2082 .f_detach = filt_ugenrdetach, 2083 .f_event = filt_ugenread_bulk, 2084 }; 2085 2086 static const struct filterops ugenwrite_bulk_filtops = { 2087 .f_isfd = 1, 2088 .f_attach = NULL, 2089 .f_detach = filt_ugenrdetach, 2090 .f_event = filt_ugenwrite_bulk, 2091 }; 2092 2093 int 2094 ugenkqfilter(dev_t dev, struct knote *kn) 2095 { 2096 struct ugen_softc *sc; 2097 struct ugen_endpoint *sce; 2098 struct klist *klist; 2099 2100 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2101 if (sc == NULL || sc->sc_dying) 2102 return ENXIO; 2103 2104 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2105 return ENODEV; 2106 2107 switch (kn->kn_filter) { 2108 case EVFILT_READ: 2109 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2110 if (sce == NULL) 2111 return EINVAL; 2112 2113 klist = &sce->rsel.sel_klist; 2114 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2115 case UE_INTERRUPT: 2116 kn->kn_fop = &ugenread_intr_filtops; 2117 break; 2118 case UE_ISOCHRONOUS: 2119 kn->kn_fop = &ugenread_isoc_filtops; 2120 break; 2121 case UE_BULK: 2122 kn->kn_fop = &ugenread_bulk_filtops; 2123 break; 2124 default: 2125 return EINVAL; 2126 } 2127 break; 2128 2129 case EVFILT_WRITE: 2130 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2131 if (sce == NULL) 2132 return EINVAL; 2133 2134 klist = &sce->rsel.sel_klist; 2135 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2136 case UE_INTERRUPT: 2137 case UE_ISOCHRONOUS: 2138 /* XXX poll doesn't support this */ 2139 return EINVAL; 2140 2141 case UE_BULK: 2142 kn->kn_fop = &ugenwrite_bulk_filtops; 2143 break; 2144 default: 2145 return EINVAL; 2146 } 2147 break; 2148 2149 default: 2150 return EINVAL; 2151 } 2152 2153 kn->kn_hook = sce; 2154 2155 mutex_enter(&sc->sc_lock); 2156 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2157 mutex_exit(&sc->sc_lock); 2158 2159 return 0; 2160 } 2161
Indexes created Thu Sep 25 16:09:42 GMT 2025