ugen.c revision 1.146
1 /* $NetBSD: ugen.c,v 1.146 2019/05/05 03:17:54 mrg 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 1.146 2019/05/05 03:17:54 mrg 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 #include "ioconf.h" 67 68 #ifdef UGEN_DEBUG 69 #define DPRINTF(x) if (ugendebug) printf x 70 #define DPRINTFN(n,x) if (ugendebug>(n)) printf x 71 int ugendebug = 0; 72 #else 73 #define DPRINTF(x) 74 #define DPRINTFN(n,x) 75 #endif 76 77 #define UGEN_CHUNK 128 /* chunk size for read */ 78 #define UGEN_IBSIZE 1020 /* buffer size */ 79 #define UGEN_BBSIZE 1024 80 81 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 82 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 83 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 84 85 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 86 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 87 88 struct isoreq { 89 struct ugen_endpoint *sce; 90 struct usbd_xfer *xfer; 91 void *dmabuf; 92 uint16_t sizes[UGEN_NISORFRMS]; 93 }; 94 95 struct ugen_endpoint { 96 struct ugen_softc *sc; 97 usb_endpoint_descriptor_t *edesc; 98 struct usbd_interface *iface; 99 int state; 100 #define UGEN_ASLP 0x02 /* waiting for data */ 101 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 102 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 103 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 104 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 105 struct usbd_pipe *pipeh; 106 struct clist q; 107 u_char *ibuf; /* start of buffer (circular for isoc) */ 108 u_char *fill; /* location for input (isoc) */ 109 u_char *limit; /* end of circular buffer (isoc) */ 110 u_char *cur; /* current read location (isoc) */ 111 uint32_t timeout; 112 uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 113 uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 114 uint32_t ra_wb_used; /* how much is in buffer */ 115 uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 116 struct usbd_xfer *ra_wb_xfer; 117 struct isoreq isoreqs[UGEN_NISOREQS]; 118 /* Keep these last; we don't overwrite them in ugen_set_config() */ 119 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 120 struct selinfo rsel; 121 kcondvar_t cv; 122 }; 123 124 struct ugen_softc { 125 device_t sc_dev; /* base device */ 126 struct usbd_device *sc_udev; 127 128 kmutex_t sc_lock; 129 kcondvar_t sc_detach_cv; 130 131 char sc_is_open[USB_MAX_ENDPOINTS]; 132 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 133 #define OUT 0 134 #define IN 1 135 136 int sc_refcnt; 137 char sc_buffer[UGEN_BBSIZE]; 138 u_char sc_dying; 139 }; 140 141 dev_type_open(ugenopen); 142 dev_type_close(ugenclose); 143 dev_type_read(ugenread); 144 dev_type_write(ugenwrite); 145 dev_type_ioctl(ugenioctl); 146 dev_type_poll(ugenpoll); 147 dev_type_kqfilter(ugenkqfilter); 148 149 const struct cdevsw ugen_cdevsw = { 150 .d_open = ugenopen, 151 .d_close = ugenclose, 152 .d_read = ugenread, 153 .d_write = ugenwrite, 154 .d_ioctl = ugenioctl, 155 .d_stop = nostop, 156 .d_tty = notty, 157 .d_poll = ugenpoll, 158 .d_mmap = nommap, 159 .d_kqfilter = ugenkqfilter, 160 .d_discard = nodiscard, 161 .d_flag = D_OTHER, 162 }; 163 164 Static void ugenintr(struct usbd_xfer *, void *, 165 usbd_status); 166 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 167 usbd_status); 168 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 169 usbd_status); 170 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 171 usbd_status); 172 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 173 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 174 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 175 void *, int, struct lwp *); 176 Static int ugen_set_config(struct ugen_softc *, int, int); 177 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 178 int, int *); 179 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 180 Static int ugen_get_alt_index(struct ugen_softc *, int); 181 Static void ugen_clear_endpoints(struct ugen_softc *); 182 183 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 184 #define UGENENDPOINT(n) (minor(n) & 0xf) 185 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 186 187 int ugenif_match(device_t, cfdata_t, void *); 188 void ugenif_attach(device_t, device_t, void *); 189 int ugen_match(device_t, cfdata_t, void *); 190 void ugen_attach(device_t, device_t, void *); 191 int ugen_detach(device_t, int); 192 int ugen_activate(device_t, enum devact); 193 194 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 195 ugen_attach, ugen_detach, ugen_activate); 196 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 197 ugenif_attach, ugen_detach, ugen_activate); 198 199 /* toggle to control attach priority. -1 means "let autoconf decide" */ 200 int ugen_override = -1; 201 202 int 203 ugen_match(device_t parent, cfdata_t match, void *aux) 204 { 205 struct usb_attach_arg *uaa = aux; 206 int override; 207 208 if (ugen_override != -1) 209 override = ugen_override; 210 else 211 override = match->cf_flags & 1; 212 213 if (override) 214 return UMATCH_HIGHEST; 215 else if (uaa->uaa_usegeneric) 216 return UMATCH_GENERIC; 217 else 218 return UMATCH_NONE; 219 } 220 221 int 222 ugenif_match(device_t parent, cfdata_t match, void *aux) 223 { 224 /* Assume that they knew what they configured! (see ugenif(4)) */ 225 return UMATCH_HIGHEST; 226 } 227 228 void 229 ugen_attach(device_t parent, device_t self, void *aux) 230 { 231 struct usb_attach_arg *uaa = aux; 232 struct usbif_attach_arg uiaa; 233 234 memset(&uiaa, 0, sizeof uiaa); 235 uiaa.uiaa_port = uaa->uaa_port; 236 uiaa.uiaa_vendor = uaa->uaa_vendor; 237 uiaa.uiaa_product = uaa->uaa_product; 238 uiaa.uiaa_release = uaa->uaa_release; 239 uiaa.uiaa_device = uaa->uaa_device; 240 uiaa.uiaa_configno = -1; 241 uiaa.uiaa_ifaceno = -1; 242 243 ugenif_attach(parent, self, &uiaa); 244 } 245 246 void 247 ugenif_attach(device_t parent, device_t self, void *aux) 248 { 249 struct ugen_softc *sc = device_private(self); 250 struct usbif_attach_arg *uiaa = aux; 251 struct usbd_device *udev; 252 char *devinfop; 253 usbd_status err; 254 int i, dir, conf; 255 256 aprint_naive("\n"); 257 aprint_normal("\n"); 258 259 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 260 cv_init(&sc->sc_detach_cv, "ugendet"); 261 262 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 263 aprint_normal_dev(self, "%s\n", devinfop); 264 usbd_devinfo_free(devinfop); 265 266 sc->sc_dev = self; 267 sc->sc_udev = udev = uiaa->uiaa_device; 268 269 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 270 for (dir = OUT; dir <= IN; dir++) { 271 struct ugen_endpoint *sce; 272 273 sce = &sc->sc_endpoints[i][dir]; 274 selinit(&sce->rsel); 275 cv_init(&sce->cv, "ugensce"); 276 } 277 } 278 279 if (uiaa->uiaa_ifaceno < 0) { 280 /* 281 * If we attach the whole device, 282 * set configuration index 0, the default one. 283 */ 284 err = usbd_set_config_index(udev, 0, 0); 285 if (err) { 286 aprint_error_dev(self, 287 "setting configuration index 0 failed\n"); 288 sc->sc_dying = 1; 289 return; 290 } 291 } 292 293 /* Get current configuration */ 294 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 295 296 /* Set up all the local state for this configuration. */ 297 err = ugen_set_config(sc, conf, uiaa->uiaa_ifaceno < 0); 298 if (err) { 299 aprint_error_dev(self, "setting configuration %d failed\n", 300 conf); 301 sc->sc_dying = 1; 302 return; 303 } 304 305 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 306 307 if (!pmf_device_register(self, NULL, NULL)) 308 aprint_error_dev(self, "couldn't establish power handler\n"); 309 310 } 311 312 Static void 313 ugen_clear_endpoints(struct ugen_softc *sc) 314 { 315 316 /* Clear out the old info, but leave the selinfo and cv initialised. */ 317 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 318 for (int dir = OUT; dir <= IN; dir++) { 319 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 320 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 321 } 322 } 323 } 324 325 Static int 326 ugen_set_config(struct ugen_softc *sc, int configno, int chkopen) 327 { 328 struct usbd_device *dev = sc->sc_udev; 329 usb_config_descriptor_t *cdesc; 330 struct usbd_interface *iface; 331 usb_endpoint_descriptor_t *ed; 332 struct ugen_endpoint *sce; 333 uint8_t niface, nendpt; 334 int ifaceno, endptno, endpt; 335 usbd_status err; 336 int dir; 337 338 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 339 device_xname(sc->sc_dev), configno, sc)); 340 341 if (chkopen) { 342 /* 343 * We start at 1, not 0, because we don't care whether the 344 * control endpoint is open or not. It is always present. 345 */ 346 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 347 if (sc->sc_is_open[endptno]) { 348 DPRINTFN(1, 349 ("ugen_set_config: %s - endpoint %d is open\n", 350 device_xname(sc->sc_dev), endptno)); 351 return USBD_IN_USE; 352 } 353 } 354 355 /* Avoid setting the current value. */ 356 cdesc = usbd_get_config_descriptor(dev); 357 if (!cdesc || cdesc->bConfigurationValue != configno) { 358 err = usbd_set_config_no(dev, configno, 1); 359 if (err) 360 return err; 361 } 362 363 ugen_clear_endpoints(sc); 364 365 err = usbd_interface_count(dev, &niface); 366 if (err) 367 return err; 368 369 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 370 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 371 err = usbd_device2interface_handle(dev, ifaceno, &iface); 372 if (err) 373 return err; 374 err = usbd_endpoint_count(iface, &nendpt); 375 if (err) 376 return err; 377 for (endptno = 0; endptno < nendpt; endptno++) { 378 ed = usbd_interface2endpoint_descriptor(iface,endptno); 379 KASSERT(ed != NULL); 380 endpt = ed->bEndpointAddress; 381 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 382 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 383 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 384 "(%d,%d), sce=%p\n", 385 endptno, endpt, UE_GET_ADDR(endpt), 386 UE_GET_DIR(endpt), sce)); 387 sce->sc = sc; 388 sce->edesc = ed; 389 sce->iface = iface; 390 } 391 } 392 return USBD_NORMAL_COMPLETION; 393 } 394 395 int 396 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 397 { 398 struct ugen_softc *sc; 399 int unit = UGENUNIT(dev); 400 int endpt = UGENENDPOINT(dev); 401 usb_endpoint_descriptor_t *edesc; 402 struct ugen_endpoint *sce; 403 int dir, isize; 404 usbd_status err; 405 struct usbd_xfer *xfer; 406 int i, j; 407 408 sc = device_lookup_private(&ugen_cd, unit); 409 if (sc == NULL || sc->sc_dying) 410 return ENXIO; 411 412 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 413 flag, mode, unit, endpt)); 414 415 /* The control endpoint allows multiple opens. */ 416 if (endpt == USB_CONTROL_ENDPOINT) { 417 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 418 return 0; 419 } 420 421 if (sc->sc_is_open[endpt]) 422 return EBUSY; 423 424 /* Make sure there are pipes for all directions. */ 425 for (dir = OUT; dir <= IN; dir++) { 426 if (flag & (dir == OUT ? FWRITE : FREAD)) { 427 sce = &sc->sc_endpoints[endpt][dir]; 428 if (sce->edesc == NULL) 429 return ENXIO; 430 } 431 } 432 433 /* Actually open the pipes. */ 434 /* XXX Should back out properly if it fails. */ 435 for (dir = OUT; dir <= IN; dir++) { 436 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 437 continue; 438 sce = &sc->sc_endpoints[endpt][dir]; 439 sce->state = 0; 440 sce->timeout = USBD_NO_TIMEOUT; 441 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 442 sc, endpt, dir, sce)); 443 edesc = sce->edesc; 444 switch (edesc->bmAttributes & UE_XFERTYPE) { 445 case UE_INTERRUPT: 446 if (dir == OUT) { 447 err = usbd_open_pipe(sce->iface, 448 edesc->bEndpointAddress, 0, &sce->pipeh); 449 if (err) 450 return EIO; 451 break; 452 } 453 isize = UGETW(edesc->wMaxPacketSize); 454 if (isize == 0) /* shouldn't happen */ 455 return EINVAL; 456 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 457 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 458 endpt, isize)); 459 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 460 kmem_free(sce->ibuf, isize); 461 sce->ibuf = NULL; 462 return ENOMEM; 463 } 464 err = usbd_open_pipe_intr(sce->iface, 465 edesc->bEndpointAddress, 466 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 467 sce->ibuf, isize, ugenintr, 468 USBD_DEFAULT_INTERVAL); 469 if (err) { 470 clfree(&sce->q); 471 kmem_free(sce->ibuf, isize); 472 sce->ibuf = NULL; 473 return EIO; 474 } 475 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 476 break; 477 case UE_BULK: 478 err = usbd_open_pipe(sce->iface, 479 edesc->bEndpointAddress, 0, &sce->pipeh); 480 if (err) 481 return EIO; 482 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 483 /* 484 * Use request size for non-RA/WB transfers 485 * as the default. 486 */ 487 sce->ra_wb_reqsize = UGEN_BBSIZE; 488 break; 489 case UE_ISOCHRONOUS: 490 if (dir == OUT) 491 return EINVAL; 492 isize = UGETW(edesc->wMaxPacketSize); 493 if (isize == 0) /* shouldn't happen */ 494 return EINVAL; 495 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 496 KM_SLEEP); 497 sce->cur = sce->fill = sce->ibuf; 498 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 499 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 500 endpt, isize)); 501 err = usbd_open_pipe(sce->iface, 502 edesc->bEndpointAddress, 0, &sce->pipeh); 503 if (err) { 504 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 505 sce->ibuf = NULL; 506 return EIO; 507 } 508 for (i = 0; i < UGEN_NISOREQS; ++i) { 509 sce->isoreqs[i].sce = sce; 510 err = usbd_create_xfer(sce->pipeh, 511 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 512 &xfer); 513 if (err) 514 goto bad; 515 sce->isoreqs[i].xfer = xfer; 516 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 517 for (j = 0; j < UGEN_NISORFRMS; ++j) 518 sce->isoreqs[i].sizes[j] = isize; 519 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 520 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 521 ugen_isoc_rintr); 522 (void)usbd_transfer(xfer); 523 } 524 DPRINTFN(5, ("ugenopen: isoc open done\n")); 525 break; 526 bad: 527 while (--i >= 0) /* implicit buffer free */ 528 usbd_destroy_xfer(sce->isoreqs[i].xfer); 529 usbd_close_pipe(sce->pipeh); 530 sce->pipeh = NULL; 531 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 532 sce->ibuf = NULL; 533 return ENOMEM; 534 case UE_CONTROL: 535 sce->timeout = USBD_DEFAULT_TIMEOUT; 536 return EINVAL; 537 } 538 } 539 sc->sc_is_open[endpt] = 1; 540 return 0; 541 } 542 543 int 544 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 545 { 546 int endpt = UGENENDPOINT(dev); 547 struct ugen_softc *sc; 548 struct ugen_endpoint *sce; 549 int dir; 550 int i; 551 552 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 553 if (sc == NULL || sc->sc_dying) 554 return ENXIO; 555 556 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 557 flag, mode, UGENUNIT(dev), endpt)); 558 559 #ifdef DIAGNOSTIC 560 if (!sc->sc_is_open[endpt]) { 561 printf("ugenclose: not open\n"); 562 return EINVAL; 563 } 564 #endif 565 566 if (endpt == USB_CONTROL_ENDPOINT) { 567 DPRINTFN(5, ("ugenclose: close control\n")); 568 sc->sc_is_open[endpt] = 0; 569 return 0; 570 } 571 572 for (dir = OUT; dir <= IN; dir++) { 573 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 574 continue; 575 sce = &sc->sc_endpoints[endpt][dir]; 576 if (sce->pipeh == NULL) 577 continue; 578 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 579 endpt, dir, sce)); 580 581 usbd_abort_pipe(sce->pipeh); 582 583 int isize = UGETW(sce->edesc->wMaxPacketSize); 584 int msize = 0; 585 586 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 587 case UE_INTERRUPT: 588 ndflush(&sce->q, sce->q.c_cc); 589 clfree(&sce->q); 590 msize = isize; 591 break; 592 case UE_ISOCHRONOUS: 593 for (i = 0; i < UGEN_NISOREQS; ++i) 594 usbd_destroy_xfer(sce->isoreqs[i].xfer); 595 msize = isize * UGEN_NISOFRAMES; 596 break; 597 case UE_BULK: 598 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 599 usbd_destroy_xfer(sce->ra_wb_xfer); 600 msize = sce->ra_wb_bufsize; 601 } 602 break; 603 default: 604 break; 605 } 606 usbd_close_pipe(sce->pipeh); 607 sce->pipeh = NULL; 608 if (sce->ibuf != NULL) { 609 kmem_free(sce->ibuf, msize); 610 sce->ibuf = NULL; 611 } 612 } 613 sc->sc_is_open[endpt] = 0; 614 615 return 0; 616 } 617 618 Static int 619 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 620 { 621 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 622 uint32_t n, tn; 623 struct usbd_xfer *xfer; 624 usbd_status err; 625 int error = 0; 626 627 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 628 629 if (endpt == USB_CONTROL_ENDPOINT) 630 return ENODEV; 631 632 #ifdef DIAGNOSTIC 633 if (sce->edesc == NULL) { 634 printf("ugenread: no edesc\n"); 635 return EIO; 636 } 637 if (sce->pipeh == NULL) { 638 printf("ugenread: no pipe\n"); 639 return EIO; 640 } 641 #endif 642 643 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 644 case UE_INTERRUPT: 645 /* Block until activity occurred. */ 646 mutex_enter(&sc->sc_lock); 647 while (sce->q.c_cc == 0) { 648 if (flag & IO_NDELAY) { 649 mutex_exit(&sc->sc_lock); 650 return EWOULDBLOCK; 651 } 652 sce->state |= UGEN_ASLP; 653 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 654 /* "ugenri" */ 655 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 656 mstohz(sce->timeout)); 657 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 658 if (sc->sc_dying) 659 error = EIO; 660 if (error) { 661 sce->state &= ~UGEN_ASLP; 662 break; 663 } 664 } 665 mutex_exit(&sc->sc_lock); 666 667 /* Transfer as many chunks as possible. */ 668 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 669 n = uimin(sce->q.c_cc, uio->uio_resid); 670 if (n > sizeof(sc->sc_buffer)) 671 n = sizeof(sc->sc_buffer); 672 673 /* Remove a small chunk from the input queue. */ 674 q_to_b(&sce->q, sc->sc_buffer, n); 675 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 676 677 /* Copy the data to the user process. */ 678 error = uiomove(sc->sc_buffer, n, uio); 679 if (error) 680 break; 681 } 682 break; 683 case UE_BULK: 684 if (sce->state & UGEN_BULK_RA) { 685 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 686 uio->uio_resid, sce->ra_wb_used)); 687 xfer = sce->ra_wb_xfer; 688 689 mutex_enter(&sc->sc_lock); 690 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 691 mutex_exit(&sc->sc_lock); 692 return EWOULDBLOCK; 693 } 694 while (uio->uio_resid > 0 && !error) { 695 while (sce->ra_wb_used == 0) { 696 sce->state |= UGEN_ASLP; 697 DPRINTFN(5, 698 ("ugenread: sleep on %p\n", 699 sce)); 700 /* "ugenrb" */ 701 error = cv_timedwait_sig(&sce->cv, 702 &sc->sc_lock, mstohz(sce->timeout)); 703 DPRINTFN(5, 704 ("ugenread: woke, error=%d\n", 705 error)); 706 if (sc->sc_dying) 707 error = EIO; 708 if (error) { 709 sce->state &= ~UGEN_ASLP; 710 break; 711 } 712 } 713 714 /* Copy data to the process. */ 715 while (uio->uio_resid > 0 716 && sce->ra_wb_used > 0) { 717 n = uimin(uio->uio_resid, 718 sce->ra_wb_used); 719 n = uimin(n, sce->limit - sce->cur); 720 error = uiomove(sce->cur, n, uio); 721 if (error) 722 break; 723 sce->cur += n; 724 sce->ra_wb_used -= n; 725 if (sce->cur == sce->limit) 726 sce->cur = sce->ibuf; 727 } 728 729 /* 730 * If the transfers stopped because the 731 * buffer was full, restart them. 732 */ 733 if (sce->state & UGEN_RA_WB_STOP && 734 sce->ra_wb_used < sce->limit - sce->ibuf) { 735 n = (sce->limit - sce->ibuf) 736 - sce->ra_wb_used; 737 usbd_setup_xfer(xfer, sce, NULL, 738 uimin(n, sce->ra_wb_xferlen), 739 0, USBD_NO_TIMEOUT, 740 ugen_bulkra_intr); 741 sce->state &= ~UGEN_RA_WB_STOP; 742 err = usbd_transfer(xfer); 743 if (err != USBD_IN_PROGRESS) 744 /* 745 * The transfer has not been 746 * queued. Setting STOP 747 * will make us try 748 * again at the next read. 749 */ 750 sce->state |= UGEN_RA_WB_STOP; 751 } 752 } 753 mutex_exit(&sc->sc_lock); 754 break; 755 } 756 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 757 0, 0, &xfer); 758 if (error) 759 return error; 760 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 761 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 762 tn = n; 763 err = usbd_bulk_transfer(xfer, sce->pipeh, 764 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 765 sce->timeout, sc->sc_buffer, &tn); 766 if (err) { 767 if (err == USBD_INTERRUPTED) 768 error = EINTR; 769 else if (err == USBD_TIMEOUT) 770 error = ETIMEDOUT; 771 else 772 error = EIO; 773 break; 774 } 775 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 776 error = uiomove(sc->sc_buffer, tn, uio); 777 if (error || tn < n) 778 break; 779 } 780 usbd_destroy_xfer(xfer); 781 break; 782 case UE_ISOCHRONOUS: 783 mutex_enter(&sc->sc_lock); 784 while (sce->cur == sce->fill) { 785 if (flag & IO_NDELAY) { 786 mutex_exit(&sc->sc_lock); 787 return EWOULDBLOCK; 788 } 789 sce->state |= UGEN_ASLP; 790 /* "ugenri" */ 791 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 792 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 793 mstohz(sce->timeout)); 794 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 795 if (sc->sc_dying) 796 error = EIO; 797 if (error) { 798 sce->state &= ~UGEN_ASLP; 799 break; 800 } 801 } 802 803 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 804 if(sce->fill > sce->cur) 805 n = uimin(sce->fill - sce->cur, uio->uio_resid); 806 else 807 n = uimin(sce->limit - sce->cur, uio->uio_resid); 808 809 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 810 811 /* Copy the data to the user process. */ 812 error = uiomove(sce->cur, n, uio); 813 if (error) 814 break; 815 sce->cur += n; 816 if (sce->cur >= sce->limit) 817 sce->cur = sce->ibuf; 818 } 819 mutex_exit(&sc->sc_lock); 820 break; 821 822 823 default: 824 return ENXIO; 825 } 826 return error; 827 } 828 829 int 830 ugenread(dev_t dev, struct uio *uio, int flag) 831 { 832 int endpt = UGENENDPOINT(dev); 833 struct ugen_softc *sc; 834 int error; 835 836 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 837 if (sc == NULL || sc->sc_dying) 838 return ENXIO; 839 840 mutex_enter(&sc->sc_lock); 841 sc->sc_refcnt++; 842 mutex_exit(&sc->sc_lock); 843 844 error = ugen_do_read(sc, endpt, uio, flag); 845 846 mutex_enter(&sc->sc_lock); 847 if (--sc->sc_refcnt < 0) 848 cv_broadcast(&sc->sc_detach_cv); 849 mutex_exit(&sc->sc_lock); 850 851 return error; 852 } 853 854 Static int 855 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 856 int flag) 857 { 858 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 859 uint32_t n; 860 int error = 0; 861 uint32_t tn; 862 char *dbuf; 863 struct usbd_xfer *xfer; 864 usbd_status err; 865 866 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 867 868 if (endpt == USB_CONTROL_ENDPOINT) 869 return ENODEV; 870 871 #ifdef DIAGNOSTIC 872 if (sce->edesc == NULL) { 873 printf("ugenwrite: no edesc\n"); 874 return EIO; 875 } 876 if (sce->pipeh == NULL) { 877 printf("ugenwrite: no pipe\n"); 878 return EIO; 879 } 880 #endif 881 882 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 883 case UE_BULK: 884 if (sce->state & UGEN_BULK_WB) { 885 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 886 uio->uio_resid, sce->ra_wb_used)); 887 xfer = sce->ra_wb_xfer; 888 889 mutex_enter(&sc->sc_lock); 890 if (sce->ra_wb_used == sce->limit - sce->ibuf && 891 flag & IO_NDELAY) { 892 mutex_exit(&sc->sc_lock); 893 return EWOULDBLOCK; 894 } 895 while (uio->uio_resid > 0 && !error) { 896 while (sce->ra_wb_used == 897 sce->limit - sce->ibuf) { 898 sce->state |= UGEN_ASLP; 899 DPRINTFN(5, 900 ("ugenwrite: sleep on %p\n", 901 sce)); 902 /* "ugenwb" */ 903 error = cv_timedwait_sig(&sce->cv, 904 &sc->sc_lock, mstohz(sce->timeout)); 905 DPRINTFN(5, 906 ("ugenwrite: woke, error=%d\n", 907 error)); 908 if (sc->sc_dying) 909 error = EIO; 910 if (error) { 911 sce->state &= ~UGEN_ASLP; 912 break; 913 } 914 } 915 916 /* Copy data from the process. */ 917 while (uio->uio_resid > 0 && 918 sce->ra_wb_used < sce->limit - sce->ibuf) { 919 n = uimin(uio->uio_resid, 920 (sce->limit - sce->ibuf) 921 - sce->ra_wb_used); 922 n = uimin(n, sce->limit - sce->fill); 923 error = uiomove(sce->fill, n, uio); 924 if (error) 925 break; 926 sce->fill += n; 927 sce->ra_wb_used += n; 928 if (sce->fill == sce->limit) 929 sce->fill = sce->ibuf; 930 } 931 932 /* 933 * If the transfers stopped because the 934 * buffer was empty, restart them. 935 */ 936 if (sce->state & UGEN_RA_WB_STOP && 937 sce->ra_wb_used > 0) { 938 dbuf = (char *)usbd_get_buffer(xfer); 939 n = uimin(sce->ra_wb_used, 940 sce->ra_wb_xferlen); 941 tn = uimin(n, sce->limit - sce->cur); 942 memcpy(dbuf, sce->cur, tn); 943 dbuf += tn; 944 if (n - tn > 0) 945 memcpy(dbuf, sce->ibuf, 946 n - tn); 947 usbd_setup_xfer(xfer, sce, NULL, n, 948 0, USBD_NO_TIMEOUT, 949 ugen_bulkwb_intr); 950 sce->state &= ~UGEN_RA_WB_STOP; 951 err = usbd_transfer(xfer); 952 if (err != USBD_IN_PROGRESS) 953 /* 954 * The transfer has not been 955 * queued. Setting STOP 956 * will make us try again 957 * at the next read. 958 */ 959 sce->state |= UGEN_RA_WB_STOP; 960 } 961 } 962 mutex_exit(&sc->sc_lock); 963 break; 964 } 965 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 966 0, 0, &xfer); 967 if (error) 968 return error; 969 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 970 error = uiomove(sc->sc_buffer, n, uio); 971 if (error) 972 break; 973 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 974 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 975 sc->sc_buffer, &n); 976 if (err) { 977 if (err == USBD_INTERRUPTED) 978 error = EINTR; 979 else if (err == USBD_TIMEOUT) 980 error = ETIMEDOUT; 981 else 982 error = EIO; 983 break; 984 } 985 } 986 usbd_destroy_xfer(xfer); 987 break; 988 case UE_INTERRUPT: 989 error = usbd_create_xfer(sce->pipeh, 990 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 991 if (error) 992 return error; 993 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 994 uio->uio_resid)) != 0) { 995 error = uiomove(sc->sc_buffer, n, uio); 996 if (error) 997 break; 998 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 999 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 1000 sce->timeout, sc->sc_buffer, &n); 1001 if (err) { 1002 if (err == USBD_INTERRUPTED) 1003 error = EINTR; 1004 else if (err == USBD_TIMEOUT) 1005 error = ETIMEDOUT; 1006 else 1007 error = EIO; 1008 break; 1009 } 1010 } 1011 usbd_destroy_xfer(xfer); 1012 break; 1013 default: 1014 return ENXIO; 1015 } 1016 return error; 1017 } 1018 1019 int 1020 ugenwrite(dev_t dev, struct uio *uio, int flag) 1021 { 1022 int endpt = UGENENDPOINT(dev); 1023 struct ugen_softc *sc; 1024 int error; 1025 1026 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1027 if (sc == NULL || sc->sc_dying) 1028 return ENXIO; 1029 1030 mutex_enter(&sc->sc_lock); 1031 sc->sc_refcnt++; 1032 mutex_exit(&sc->sc_lock); 1033 1034 error = ugen_do_write(sc, endpt, uio, flag); 1035 1036 mutex_enter(&sc->sc_lock); 1037 if (--sc->sc_refcnt < 0) 1038 cv_broadcast(&sc->sc_detach_cv); 1039 mutex_exit(&sc->sc_lock); 1040 1041 return error; 1042 } 1043 1044 int 1045 ugen_activate(device_t self, enum devact act) 1046 { 1047 struct ugen_softc *sc = device_private(self); 1048 1049 switch (act) { 1050 case DVACT_DEACTIVATE: 1051 sc->sc_dying = 1; 1052 return 0; 1053 default: 1054 return EOPNOTSUPP; 1055 } 1056 } 1057 1058 int 1059 ugen_detach(device_t self, int flags) 1060 { 1061 struct ugen_softc *sc = device_private(self); 1062 struct ugen_endpoint *sce; 1063 int i, dir; 1064 int maj, mn; 1065 1066 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1067 1068 sc->sc_dying = 1; 1069 pmf_device_deregister(self); 1070 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1071 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1072 for (dir = OUT; dir <= IN; dir++) { 1073 sce = &sc->sc_endpoints[i][dir]; 1074 if (sce->pipeh) 1075 usbd_abort_pipe(sce->pipeh); 1076 } 1077 } 1078 1079 mutex_enter(&sc->sc_lock); 1080 if (--sc->sc_refcnt >= 0) { 1081 /* Wake everyone */ 1082 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1083 cv_signal(&sc->sc_endpoints[i][IN].cv); 1084 /* Wait for processes to go away. */ 1085 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1086 aprint_error_dev(self, ": didn't detach\n"); 1087 } 1088 mutex_exit(&sc->sc_lock); 1089 1090 /* locate the major number */ 1091 maj = cdevsw_lookup_major(&ugen_cdevsw); 1092 1093 /* Nuke the vnodes for any open instances (calls close). */ 1094 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1095 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1096 1097 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1098 1099 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1100 for (dir = OUT; dir <= IN; dir++) { 1101 sce = &sc->sc_endpoints[i][dir]; 1102 seldestroy(&sce->rsel); 1103 cv_destroy(&sce->cv); 1104 } 1105 } 1106 1107 cv_destroy(&sc->sc_detach_cv); 1108 mutex_destroy(&sc->sc_lock); 1109 1110 return 0; 1111 } 1112 1113 Static void 1114 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1115 { 1116 struct ugen_endpoint *sce = addr; 1117 struct ugen_softc *sc = sce->sc; 1118 uint32_t count; 1119 u_char *ibuf; 1120 1121 if (status == USBD_CANCELLED) 1122 return; 1123 1124 if (status != USBD_NORMAL_COMPLETION) { 1125 DPRINTF(("ugenintr: status=%d\n", status)); 1126 if (status == USBD_STALLED) 1127 usbd_clear_endpoint_stall_async(sce->pipeh); 1128 return; 1129 } 1130 1131 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1132 ibuf = sce->ibuf; 1133 1134 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1135 xfer, status, count)); 1136 DPRINTFN(5, (" data = %02x %02x %02x\n", 1137 ibuf[0], ibuf[1], ibuf[2])); 1138 1139 (void)b_to_q(ibuf, count, &sce->q); 1140 1141 mutex_enter(&sc->sc_lock); 1142 if (sce->state & UGEN_ASLP) { 1143 sce->state &= ~UGEN_ASLP; 1144 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1145 cv_signal(&sce->cv); 1146 } 1147 mutex_exit(&sc->sc_lock); 1148 selnotify(&sce->rsel, 0, 0); 1149 } 1150 1151 Static void 1152 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1153 usbd_status status) 1154 { 1155 struct isoreq *req = addr; 1156 struct ugen_endpoint *sce = req->sce; 1157 struct ugen_softc *sc = sce->sc; 1158 uint32_t count, n; 1159 int i, isize; 1160 1161 /* Return if we are aborting. */ 1162 if (status == USBD_CANCELLED) 1163 return; 1164 1165 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1166 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1167 (long)(req - sce->isoreqs), count)); 1168 1169 /* throw away oldest input if the buffer is full */ 1170 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1171 sce->cur += count; 1172 if(sce->cur >= sce->limit) 1173 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1174 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1175 count)); 1176 } 1177 1178 isize = UGETW(sce->edesc->wMaxPacketSize); 1179 for (i = 0; i < UGEN_NISORFRMS; i++) { 1180 uint32_t actlen = req->sizes[i]; 1181 char const *tbuf = (char const *)req->dmabuf + isize * i; 1182 1183 /* copy data to buffer */ 1184 while (actlen > 0) { 1185 n = uimin(actlen, sce->limit - sce->fill); 1186 memcpy(sce->fill, tbuf, n); 1187 1188 tbuf += n; 1189 actlen -= n; 1190 sce->fill += n; 1191 if(sce->fill == sce->limit) 1192 sce->fill = sce->ibuf; 1193 } 1194 1195 /* setup size for next transfer */ 1196 req->sizes[i] = isize; 1197 } 1198 1199 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1200 ugen_isoc_rintr); 1201 (void)usbd_transfer(xfer); 1202 1203 mutex_enter(&sc->sc_lock); 1204 if (sce->state & UGEN_ASLP) { 1205 sce->state &= ~UGEN_ASLP; 1206 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1207 cv_signal(&sce->cv); 1208 } 1209 mutex_exit(&sc->sc_lock); 1210 selnotify(&sce->rsel, 0, 0); 1211 } 1212 1213 Static void 1214 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1215 usbd_status status) 1216 { 1217 struct ugen_endpoint *sce = addr; 1218 struct ugen_softc *sc = sce->sc; 1219 uint32_t count, n; 1220 char const *tbuf; 1221 usbd_status err; 1222 1223 /* Return if we are aborting. */ 1224 if (status == USBD_CANCELLED) 1225 return; 1226 1227 if (status != USBD_NORMAL_COMPLETION) { 1228 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1229 sce->state |= UGEN_RA_WB_STOP; 1230 if (status == USBD_STALLED) 1231 usbd_clear_endpoint_stall_async(sce->pipeh); 1232 return; 1233 } 1234 1235 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1236 1237 /* Keep track of how much is in the buffer. */ 1238 sce->ra_wb_used += count; 1239 1240 /* Copy data to buffer. */ 1241 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1242 n = uimin(count, sce->limit - sce->fill); 1243 memcpy(sce->fill, tbuf, n); 1244 tbuf += n; 1245 count -= n; 1246 sce->fill += n; 1247 if (sce->fill == sce->limit) 1248 sce->fill = sce->ibuf; 1249 if (count > 0) { 1250 memcpy(sce->fill, tbuf, count); 1251 sce->fill += count; 1252 } 1253 1254 /* Set up the next request if necessary. */ 1255 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1256 if (n > 0) { 1257 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1258 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1259 err = usbd_transfer(xfer); 1260 if (err != USBD_IN_PROGRESS) { 1261 printf("usbd_bulkra_intr: error=%d\n", err); 1262 /* 1263 * The transfer has not been queued. Setting STOP 1264 * will make us try again at the next read. 1265 */ 1266 sce->state |= UGEN_RA_WB_STOP; 1267 } 1268 } 1269 else 1270 sce->state |= UGEN_RA_WB_STOP; 1271 1272 mutex_enter(&sc->sc_lock); 1273 if (sce->state & UGEN_ASLP) { 1274 sce->state &= ~UGEN_ASLP; 1275 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1276 cv_signal(&sce->cv); 1277 } 1278 mutex_exit(&sc->sc_lock); 1279 selnotify(&sce->rsel, 0, 0); 1280 } 1281 1282 Static void 1283 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1284 usbd_status status) 1285 { 1286 struct ugen_endpoint *sce = addr; 1287 struct ugen_softc *sc = sce->sc; 1288 uint32_t count, n; 1289 char *tbuf; 1290 usbd_status err; 1291 1292 /* Return if we are aborting. */ 1293 if (status == USBD_CANCELLED) 1294 return; 1295 1296 if (status != USBD_NORMAL_COMPLETION) { 1297 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1298 sce->state |= UGEN_RA_WB_STOP; 1299 if (status == USBD_STALLED) 1300 usbd_clear_endpoint_stall_async(sce->pipeh); 1301 return; 1302 } 1303 1304 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1305 1306 /* Keep track of how much is in the buffer. */ 1307 sce->ra_wb_used -= count; 1308 1309 /* Update buffer pointers. */ 1310 sce->cur += count; 1311 if (sce->cur >= sce->limit) 1312 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1313 1314 /* Set up next request if necessary. */ 1315 if (sce->ra_wb_used > 0) { 1316 /* copy data from buffer */ 1317 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1318 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1319 n = uimin(count, sce->limit - sce->cur); 1320 memcpy(tbuf, sce->cur, n); 1321 tbuf += n; 1322 if (count - n > 0) 1323 memcpy(tbuf, sce->ibuf, count - n); 1324 1325 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1326 ugen_bulkwb_intr); 1327 err = usbd_transfer(xfer); 1328 if (err != USBD_IN_PROGRESS) { 1329 printf("usbd_bulkwb_intr: error=%d\n", err); 1330 /* 1331 * The transfer has not been queued. Setting STOP 1332 * will make us try again at the next write. 1333 */ 1334 sce->state |= UGEN_RA_WB_STOP; 1335 } 1336 } 1337 else 1338 sce->state |= UGEN_RA_WB_STOP; 1339 1340 mutex_enter(&sc->sc_lock); 1341 if (sce->state & UGEN_ASLP) { 1342 sce->state &= ~UGEN_ASLP; 1343 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1344 cv_signal(&sce->cv); 1345 } 1346 mutex_exit(&sc->sc_lock); 1347 selnotify(&sce->rsel, 0, 0); 1348 } 1349 1350 Static usbd_status 1351 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1352 { 1353 struct usbd_interface *iface; 1354 usb_endpoint_descriptor_t *ed; 1355 usbd_status err; 1356 struct ugen_endpoint *sce; 1357 uint8_t niface, nendpt, endptno, endpt; 1358 int dir; 1359 1360 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1361 1362 err = usbd_interface_count(sc->sc_udev, &niface); 1363 if (err) 1364 return err; 1365 if (ifaceidx < 0 || ifaceidx >= niface) 1366 return USBD_INVAL; 1367 1368 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1369 if (err) 1370 return err; 1371 err = usbd_endpoint_count(iface, &nendpt); 1372 if (err) 1373 return err; 1374 1375 /* change setting */ 1376 err = usbd_set_interface(iface, altno); 1377 if (err) 1378 return err; 1379 1380 err = usbd_endpoint_count(iface, &nendpt); 1381 if (err) 1382 return err; 1383 1384 ugen_clear_endpoints(sc); 1385 1386 for (endptno = 0; endptno < nendpt; endptno++) { 1387 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1388 KASSERT(ed != NULL); 1389 endpt = ed->bEndpointAddress; 1390 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1391 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1392 sce->sc = sc; 1393 sce->edesc = ed; 1394 sce->iface = iface; 1395 } 1396 return 0; 1397 } 1398 1399 /* Retrieve a complete descriptor for a certain device and index. */ 1400 Static usb_config_descriptor_t * 1401 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1402 { 1403 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1404 int len; 1405 usbd_status err; 1406 1407 if (index == USB_CURRENT_CONFIG_INDEX) { 1408 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1409 len = UGETW(tdesc->wTotalLength); 1410 if (lenp) 1411 *lenp = len; 1412 cdesc = kmem_alloc(len, KM_SLEEP); 1413 memcpy(cdesc, tdesc, len); 1414 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1415 } else { 1416 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1417 if (err) 1418 return 0; 1419 len = UGETW(cdescr.wTotalLength); 1420 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1421 if (lenp) 1422 *lenp = len; 1423 cdesc = kmem_alloc(len, KM_SLEEP); 1424 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1425 if (err) { 1426 kmem_free(cdesc, len); 1427 return 0; 1428 } 1429 } 1430 return cdesc; 1431 } 1432 1433 Static int 1434 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1435 { 1436 struct usbd_interface *iface; 1437 usbd_status err; 1438 1439 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1440 if (err) 1441 return -1; 1442 return usbd_get_interface_altindex(iface); 1443 } 1444 1445 Static int 1446 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1447 void *addr, int flag, struct lwp *l) 1448 { 1449 struct ugen_endpoint *sce; 1450 usbd_status err; 1451 struct usbd_interface *iface; 1452 struct usb_config_desc *cd; 1453 usb_config_descriptor_t *cdesc; 1454 struct usb_interface_desc *id; 1455 usb_interface_descriptor_t *idesc; 1456 struct usb_endpoint_desc *ed; 1457 usb_endpoint_descriptor_t *edesc; 1458 struct usb_alt_interface *ai; 1459 struct usb_string_desc *si; 1460 uint8_t conf, alt; 1461 int cdesclen; 1462 int error; 1463 int dir; 1464 1465 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1466 if (sc->sc_dying) 1467 return EIO; 1468 1469 switch (cmd) { 1470 case FIONBIO: 1471 /* All handled in the upper FS layer. */ 1472 return 0; 1473 case USB_SET_SHORT_XFER: 1474 if (endpt == USB_CONTROL_ENDPOINT) 1475 return EINVAL; 1476 /* This flag only affects read */ 1477 sce = &sc->sc_endpoints[endpt][IN]; 1478 if (sce == NULL || sce->pipeh == NULL) 1479 return EINVAL; 1480 if (*(int *)addr) 1481 sce->state |= UGEN_SHORT_OK; 1482 else 1483 sce->state &= ~UGEN_SHORT_OK; 1484 return 0; 1485 case USB_SET_TIMEOUT: 1486 for (dir = OUT; dir <= IN; dir++) { 1487 sce = &sc->sc_endpoints[endpt][dir]; 1488 if (sce == NULL) 1489 return EINVAL; 1490 1491 sce->timeout = *(int *)addr; 1492 } 1493 return 0; 1494 case USB_SET_BULK_RA: 1495 if (endpt == USB_CONTROL_ENDPOINT) 1496 return EINVAL; 1497 sce = &sc->sc_endpoints[endpt][IN]; 1498 if (sce == NULL || sce->pipeh == NULL) 1499 return EINVAL; 1500 edesc = sce->edesc; 1501 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1502 return EINVAL; 1503 1504 if (*(int *)addr) { 1505 /* Only turn RA on if it's currently off. */ 1506 if (sce->state & UGEN_BULK_RA) 1507 return 0; 1508 1509 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1510 /* shouldn't happen */ 1511 return EINVAL; 1512 error = usbd_create_xfer(sce->pipeh, 1513 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1514 if (error) 1515 return error; 1516 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1517 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1518 sce->fill = sce->cur = sce->ibuf; 1519 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1520 sce->ra_wb_used = 0; 1521 sce->state |= UGEN_BULK_RA; 1522 sce->state &= ~UGEN_RA_WB_STOP; 1523 /* Now start reading. */ 1524 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1525 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1526 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1527 err = usbd_transfer(sce->ra_wb_xfer); 1528 if (err != USBD_IN_PROGRESS) { 1529 sce->state &= ~UGEN_BULK_RA; 1530 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1531 sce->ibuf = NULL; 1532 usbd_destroy_xfer(sce->ra_wb_xfer); 1533 return EIO; 1534 } 1535 } else { 1536 /* Only turn RA off if it's currently on. */ 1537 if (!(sce->state & UGEN_BULK_RA)) 1538 return 0; 1539 1540 sce->state &= ~UGEN_BULK_RA; 1541 usbd_abort_pipe(sce->pipeh); 1542 usbd_destroy_xfer(sce->ra_wb_xfer); 1543 /* 1544 * XXX Discard whatever's in the buffer, but we 1545 * should keep it around and drain the buffer 1546 * instead. 1547 */ 1548 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1549 sce->ibuf = NULL; 1550 } 1551 return 0; 1552 case USB_SET_BULK_WB: 1553 if (endpt == USB_CONTROL_ENDPOINT) 1554 return EINVAL; 1555 sce = &sc->sc_endpoints[endpt][OUT]; 1556 if (sce == NULL || sce->pipeh == NULL) 1557 return EINVAL; 1558 edesc = sce->edesc; 1559 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1560 return EINVAL; 1561 1562 if (*(int *)addr) { 1563 /* Only turn WB on if it's currently off. */ 1564 if (sce->state & UGEN_BULK_WB) 1565 return 0; 1566 1567 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1568 /* shouldn't happen */ 1569 return EINVAL; 1570 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1571 0, 0, &sce->ra_wb_xfer); 1572 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1573 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1574 sce->fill = sce->cur = sce->ibuf; 1575 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1576 sce->ra_wb_used = 0; 1577 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1578 } else { 1579 /* Only turn WB off if it's currently on. */ 1580 if (!(sce->state & UGEN_BULK_WB)) 1581 return 0; 1582 1583 sce->state &= ~UGEN_BULK_WB; 1584 /* 1585 * XXX Discard whatever's in the buffer, but we 1586 * should keep it around and keep writing to 1587 * drain the buffer instead. 1588 */ 1589 usbd_abort_pipe(sce->pipeh); 1590 usbd_destroy_xfer(sce->ra_wb_xfer); 1591 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1592 sce->ibuf = NULL; 1593 } 1594 return 0; 1595 case USB_SET_BULK_RA_OPT: 1596 case USB_SET_BULK_WB_OPT: 1597 { 1598 struct usb_bulk_ra_wb_opt *opt; 1599 1600 if (endpt == USB_CONTROL_ENDPOINT) 1601 return EINVAL; 1602 opt = (struct usb_bulk_ra_wb_opt *)addr; 1603 if (cmd == USB_SET_BULK_RA_OPT) 1604 sce = &sc->sc_endpoints[endpt][IN]; 1605 else 1606 sce = &sc->sc_endpoints[endpt][OUT]; 1607 if (sce == NULL || sce->pipeh == NULL) 1608 return EINVAL; 1609 if (opt->ra_wb_buffer_size < 1 || 1610 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1611 opt->ra_wb_request_size < 1 || 1612 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1613 return EINVAL; 1614 /* 1615 * XXX These changes do not take effect until the 1616 * next time RA/WB mode is enabled but they ought to 1617 * take effect immediately. 1618 */ 1619 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1620 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1621 return 0; 1622 } 1623 default: 1624 break; 1625 } 1626 1627 if (endpt != USB_CONTROL_ENDPOINT) 1628 return EINVAL; 1629 1630 switch (cmd) { 1631 #ifdef UGEN_DEBUG 1632 case USB_SETDEBUG: 1633 ugendebug = *(int *)addr; 1634 break; 1635 #endif 1636 case USB_GET_CONFIG: 1637 err = usbd_get_config(sc->sc_udev, &conf); 1638 if (err) 1639 return EIO; 1640 *(int *)addr = conf; 1641 break; 1642 case USB_SET_CONFIG: 1643 if (!(flag & FWRITE)) 1644 return EPERM; 1645 err = ugen_set_config(sc, *(int *)addr, 1); 1646 switch (err) { 1647 case USBD_NORMAL_COMPLETION: 1648 break; 1649 case USBD_IN_USE: 1650 return EBUSY; 1651 default: 1652 return EIO; 1653 } 1654 break; 1655 case USB_GET_ALTINTERFACE: 1656 ai = (struct usb_alt_interface *)addr; 1657 err = usbd_device2interface_handle(sc->sc_udev, 1658 ai->uai_interface_index, &iface); 1659 if (err) 1660 return EINVAL; 1661 idesc = usbd_get_interface_descriptor(iface); 1662 if (idesc == NULL) 1663 return EIO; 1664 ai->uai_alt_no = idesc->bAlternateSetting; 1665 break; 1666 case USB_SET_ALTINTERFACE: 1667 if (!(flag & FWRITE)) 1668 return EPERM; 1669 ai = (struct usb_alt_interface *)addr; 1670 err = usbd_device2interface_handle(sc->sc_udev, 1671 ai->uai_interface_index, &iface); 1672 if (err) 1673 return EINVAL; 1674 err = ugen_set_interface(sc, ai->uai_interface_index, 1675 ai->uai_alt_no); 1676 if (err) 1677 return EINVAL; 1678 break; 1679 case USB_GET_NO_ALT: 1680 ai = (struct usb_alt_interface *)addr; 1681 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1682 if (cdesc == NULL) 1683 return EINVAL; 1684 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1685 if (idesc == NULL) { 1686 kmem_free(cdesc, cdesclen); 1687 return EINVAL; 1688 } 1689 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1690 idesc->bInterfaceNumber); 1691 kmem_free(cdesc, cdesclen); 1692 break; 1693 case USB_GET_DEVICE_DESC: 1694 *(usb_device_descriptor_t *)addr = 1695 *usbd_get_device_descriptor(sc->sc_udev); 1696 break; 1697 case USB_GET_CONFIG_DESC: 1698 cd = (struct usb_config_desc *)addr; 1699 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1700 if (cdesc == NULL) 1701 return EINVAL; 1702 cd->ucd_desc = *cdesc; 1703 kmem_free(cdesc, cdesclen); 1704 break; 1705 case USB_GET_INTERFACE_DESC: 1706 id = (struct usb_interface_desc *)addr; 1707 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1708 if (cdesc == NULL) 1709 return EINVAL; 1710 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1711 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1712 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1713 else 1714 alt = id->uid_alt_index; 1715 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1716 if (idesc == NULL) { 1717 kmem_free(cdesc, cdesclen); 1718 return EINVAL; 1719 } 1720 id->uid_desc = *idesc; 1721 kmem_free(cdesc, cdesclen); 1722 break; 1723 case USB_GET_ENDPOINT_DESC: 1724 ed = (struct usb_endpoint_desc *)addr; 1725 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1726 if (cdesc == NULL) 1727 return EINVAL; 1728 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1729 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1730 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1731 else 1732 alt = ed->ued_alt_index; 1733 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1734 alt, ed->ued_endpoint_index); 1735 if (edesc == NULL) { 1736 kmem_free(cdesc, cdesclen); 1737 return EINVAL; 1738 } 1739 ed->ued_desc = *edesc; 1740 kmem_free(cdesc, cdesclen); 1741 break; 1742 case USB_GET_FULL_DESC: 1743 { 1744 int len; 1745 struct iovec iov; 1746 struct uio uio; 1747 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1748 1749 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1750 if (cdesc == NULL) 1751 return EINVAL; 1752 len = cdesclen; 1753 if (len > fd->ufd_size) 1754 len = fd->ufd_size; 1755 iov.iov_base = (void *)fd->ufd_data; 1756 iov.iov_len = len; 1757 uio.uio_iov = &iov; 1758 uio.uio_iovcnt = 1; 1759 uio.uio_resid = len; 1760 uio.uio_offset = 0; 1761 uio.uio_rw = UIO_READ; 1762 uio.uio_vmspace = l->l_proc->p_vmspace; 1763 error = uiomove((void *)cdesc, len, &uio); 1764 kmem_free(cdesc, cdesclen); 1765 return error; 1766 } 1767 case USB_GET_STRING_DESC: { 1768 int len; 1769 si = (struct usb_string_desc *)addr; 1770 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1771 si->usd_language_id, &si->usd_desc, &len); 1772 if (err) 1773 return EINVAL; 1774 break; 1775 } 1776 case USB_DO_REQUEST: 1777 { 1778 struct usb_ctl_request *ur = (void *)addr; 1779 int len = UGETW(ur->ucr_request.wLength); 1780 struct iovec iov; 1781 struct uio uio; 1782 void *ptr = 0; 1783 usbd_status xerr; 1784 1785 error = 0; 1786 1787 if (!(flag & FWRITE)) 1788 return EPERM; 1789 /* Avoid requests that would damage the bus integrity. */ 1790 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1791 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1792 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1793 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1794 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1795 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1796 return EINVAL; 1797 1798 if (len < 0 || len > 32767) 1799 return EINVAL; 1800 if (len != 0) { 1801 iov.iov_base = (void *)ur->ucr_data; 1802 iov.iov_len = len; 1803 uio.uio_iov = &iov; 1804 uio.uio_iovcnt = 1; 1805 uio.uio_resid = len; 1806 uio.uio_offset = 0; 1807 uio.uio_rw = 1808 ur->ucr_request.bmRequestType & UT_READ ? 1809 UIO_READ : UIO_WRITE; 1810 uio.uio_vmspace = l->l_proc->p_vmspace; 1811 ptr = kmem_alloc(len, KM_SLEEP); 1812 if (uio.uio_rw == UIO_WRITE) { 1813 error = uiomove(ptr, len, &uio); 1814 if (error) 1815 goto ret; 1816 } 1817 } 1818 sce = &sc->sc_endpoints[endpt][IN]; 1819 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1820 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1821 if (xerr) { 1822 error = EIO; 1823 goto ret; 1824 } 1825 if (len != 0) { 1826 if (uio.uio_rw == UIO_READ) { 1827 size_t alen = uimin(len, ur->ucr_actlen); 1828 error = uiomove(ptr, alen, &uio); 1829 if (error) 1830 goto ret; 1831 } 1832 } 1833 ret: 1834 if (ptr) 1835 kmem_free(ptr, len); 1836 return error; 1837 } 1838 case USB_GET_DEVICEINFO: 1839 usbd_fill_deviceinfo(sc->sc_udev, 1840 (struct usb_device_info *)addr, 0); 1841 break; 1842 case USB_GET_DEVICEINFO_OLD: 1843 { 1844 int ret; 1845 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1846 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1847 usbd_devinfo_vp, usbd_printBCD), 1848 enosys(), ret); 1849 if (ret == 0) 1850 return 0; 1851 return EINVAL; 1852 } 1853 default: 1854 return EINVAL; 1855 } 1856 return 0; 1857 } 1858 1859 int 1860 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1861 { 1862 int endpt = UGENENDPOINT(dev); 1863 struct ugen_softc *sc; 1864 int error; 1865 1866 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1867 if (sc == NULL || sc->sc_dying) 1868 return ENXIO; 1869 1870 sc->sc_refcnt++; 1871 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1872 if (--sc->sc_refcnt < 0) 1873 cv_broadcast(&sc->sc_detach_cv); 1874 return error; 1875 } 1876 1877 int 1878 ugenpoll(dev_t dev, int events, struct lwp *l) 1879 { 1880 struct ugen_softc *sc; 1881 struct ugen_endpoint *sce_in, *sce_out; 1882 int revents = 0; 1883 1884 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1885 if (sc == NULL) 1886 return ENXIO; 1887 1888 if (sc->sc_dying) 1889 return POLLHUP; 1890 1891 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1892 return ENODEV; 1893 1894 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1895 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1896 if (sce_in == NULL && sce_out == NULL) 1897 return POLLERR; 1898 #ifdef DIAGNOSTIC 1899 if (!sce_in->edesc && !sce_out->edesc) { 1900 printf("ugenpoll: no edesc\n"); 1901 return POLLERR; 1902 } 1903 /* It's possible to have only one pipe open. */ 1904 if (!sce_in->pipeh && !sce_out->pipeh) { 1905 printf("ugenpoll: no pipe\n"); 1906 return POLLERR; 1907 } 1908 #endif 1909 1910 mutex_enter(&sc->sc_lock); 1911 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1912 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1913 case UE_INTERRUPT: 1914 if (sce_in->q.c_cc > 0) 1915 revents |= events & (POLLIN | POLLRDNORM); 1916 else 1917 selrecord(l, &sce_in->rsel); 1918 break; 1919 case UE_ISOCHRONOUS: 1920 if (sce_in->cur != sce_in->fill) 1921 revents |= events & (POLLIN | POLLRDNORM); 1922 else 1923 selrecord(l, &sce_in->rsel); 1924 break; 1925 case UE_BULK: 1926 if (sce_in->state & UGEN_BULK_RA) { 1927 if (sce_in->ra_wb_used > 0) 1928 revents |= events & 1929 (POLLIN | POLLRDNORM); 1930 else 1931 selrecord(l, &sce_in->rsel); 1932 break; 1933 } 1934 /* 1935 * We have no easy way of determining if a read will 1936 * yield any data or a write will happen. 1937 * Pretend they will. 1938 */ 1939 revents |= events & (POLLIN | POLLRDNORM); 1940 break; 1941 default: 1942 break; 1943 } 1944 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1945 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1946 case UE_INTERRUPT: 1947 case UE_ISOCHRONOUS: 1948 /* XXX unimplemented */ 1949 break; 1950 case UE_BULK: 1951 if (sce_out->state & UGEN_BULK_WB) { 1952 if (sce_out->ra_wb_used < 1953 sce_out->limit - sce_out->ibuf) 1954 revents |= events & 1955 (POLLOUT | POLLWRNORM); 1956 else 1957 selrecord(l, &sce_out->rsel); 1958 break; 1959 } 1960 /* 1961 * We have no easy way of determining if a read will 1962 * yield any data or a write will happen. 1963 * Pretend they will. 1964 */ 1965 revents |= events & (POLLOUT | POLLWRNORM); 1966 break; 1967 default: 1968 break; 1969 } 1970 1971 mutex_exit(&sc->sc_lock); 1972 1973 return revents; 1974 } 1975 1976 static void 1977 filt_ugenrdetach(struct knote *kn) 1978 { 1979 struct ugen_endpoint *sce = kn->kn_hook; 1980 struct ugen_softc *sc = sce->sc; 1981 1982 mutex_enter(&sc->sc_lock); 1983 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1984 mutex_exit(&sc->sc_lock); 1985 } 1986 1987 static int 1988 filt_ugenread_intr(struct knote *kn, long hint) 1989 { 1990 struct ugen_endpoint *sce = kn->kn_hook; 1991 struct ugen_softc *sc = sce->sc; 1992 1993 if (sc->sc_dying) 1994 return 0; 1995 1996 kn->kn_data = sce->q.c_cc; 1997 return kn->kn_data > 0; 1998 } 1999 2000 static int 2001 filt_ugenread_isoc(struct knote *kn, long hint) 2002 { 2003 struct ugen_endpoint *sce = kn->kn_hook; 2004 struct ugen_softc *sc = sce->sc; 2005 2006 if (sc->sc_dying) 2007 return 0; 2008 2009 if (sce->cur == sce->fill) 2010 return 0; 2011 2012 if (sce->cur < sce->fill) 2013 kn->kn_data = sce->fill - sce->cur; 2014 else 2015 kn->kn_data = (sce->limit - sce->cur) + 2016 (sce->fill - sce->ibuf); 2017 2018 return 1; 2019 } 2020 2021 static int 2022 filt_ugenread_bulk(struct knote *kn, long hint) 2023 { 2024 struct ugen_endpoint *sce = kn->kn_hook; 2025 struct ugen_softc *sc = sce->sc; 2026 2027 if (sc->sc_dying) 2028 return 0; 2029 2030 if (!(sce->state & UGEN_BULK_RA)) 2031 /* 2032 * We have no easy way of determining if a read will 2033 * yield any data or a write will happen. 2034 * So, emulate "seltrue". 2035 */ 2036 return filt_seltrue(kn, hint); 2037 2038 if (sce->ra_wb_used == 0) 2039 return 0; 2040 2041 kn->kn_data = sce->ra_wb_used; 2042 2043 return 1; 2044 } 2045 2046 static int 2047 filt_ugenwrite_bulk(struct knote *kn, long hint) 2048 { 2049 struct ugen_endpoint *sce = kn->kn_hook; 2050 struct ugen_softc *sc = sce->sc; 2051 2052 if (sc->sc_dying) 2053 return 0; 2054 2055 if (!(sce->state & UGEN_BULK_WB)) 2056 /* 2057 * We have no easy way of determining if a read will 2058 * yield any data or a write will happen. 2059 * So, emulate "seltrue". 2060 */ 2061 return filt_seltrue(kn, hint); 2062 2063 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2064 return 0; 2065 2066 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2067 2068 return 1; 2069 } 2070 2071 static const struct filterops ugenread_intr_filtops = { 2072 .f_isfd = 1, 2073 .f_attach = NULL, 2074 .f_detach = filt_ugenrdetach, 2075 .f_event = filt_ugenread_intr, 2076 }; 2077 2078 static const struct filterops ugenread_isoc_filtops = { 2079 .f_isfd = 1, 2080 .f_attach = NULL, 2081 .f_detach = filt_ugenrdetach, 2082 .f_event = filt_ugenread_isoc, 2083 }; 2084 2085 static const struct filterops ugenread_bulk_filtops = { 2086 .f_isfd = 1, 2087 .f_attach = NULL, 2088 .f_detach = filt_ugenrdetach, 2089 .f_event = filt_ugenread_bulk, 2090 }; 2091 2092 static const struct filterops ugenwrite_bulk_filtops = { 2093 .f_isfd = 1, 2094 .f_attach = NULL, 2095 .f_detach = filt_ugenrdetach, 2096 .f_event = filt_ugenwrite_bulk, 2097 }; 2098 2099 int 2100 ugenkqfilter(dev_t dev, struct knote *kn) 2101 { 2102 struct ugen_softc *sc; 2103 struct ugen_endpoint *sce; 2104 struct klist *klist; 2105 2106 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2107 if (sc == NULL || sc->sc_dying) 2108 return ENXIO; 2109 2110 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2111 return ENODEV; 2112 2113 switch (kn->kn_filter) { 2114 case EVFILT_READ: 2115 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2116 if (sce == NULL) 2117 return EINVAL; 2118 2119 klist = &sce->rsel.sel_klist; 2120 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2121 case UE_INTERRUPT: 2122 kn->kn_fop = &ugenread_intr_filtops; 2123 break; 2124 case UE_ISOCHRONOUS: 2125 kn->kn_fop = &ugenread_isoc_filtops; 2126 break; 2127 case UE_BULK: 2128 kn->kn_fop = &ugenread_bulk_filtops; 2129 break; 2130 default: 2131 return EINVAL; 2132 } 2133 break; 2134 2135 case EVFILT_WRITE: 2136 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2137 if (sce == NULL) 2138 return EINVAL; 2139 2140 klist = &sce->rsel.sel_klist; 2141 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2142 case UE_INTERRUPT: 2143 case UE_ISOCHRONOUS: 2144 /* XXX poll doesn't support this */ 2145 return EINVAL; 2146 2147 case UE_BULK: 2148 kn->kn_fop = &ugenwrite_bulk_filtops; 2149 break; 2150 default: 2151 return EINVAL; 2152 } 2153 break; 2154 2155 default: 2156 return EINVAL; 2157 } 2158 2159 kn->kn_hook = sce; 2160 2161 mutex_enter(&sc->sc_lock); 2162 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2163 mutex_exit(&sc->sc_lock); 2164 2165 return 0; 2166 } 2167
Indexes created Thu Sep 25 16:09:42 GMT 2025