ugen.c revision 1.154
1 /* $NetBSD: ugen.c,v 1.154 2020/08/16 02:34:54 riastradh 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 1.154 2020/08/16 02:34:54 riastradh 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_SHORT_OK 0x04 /* short xfers are OK */ 101 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 102 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 103 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 104 struct usbd_pipe *pipeh; 105 struct clist q; 106 u_char *ibuf; /* start of buffer (circular for isoc) */ 107 u_char *fill; /* location for input (isoc) */ 108 u_char *limit; /* end of circular buffer (isoc) */ 109 u_char *cur; /* current read location (isoc) */ 110 uint32_t timeout; 111 uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 112 uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 113 uint32_t ra_wb_used; /* how much is in buffer */ 114 uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 115 struct usbd_xfer *ra_wb_xfer; 116 struct isoreq isoreqs[UGEN_NISOREQS]; 117 /* Keep these last; we don't overwrite them in ugen_set_config() */ 118 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 119 struct selinfo rsel; 120 kcondvar_t cv; 121 }; 122 123 struct ugen_softc { 124 device_t sc_dev; /* base device */ 125 struct usbd_device *sc_udev; 126 127 kmutex_t sc_lock; 128 kcondvar_t sc_detach_cv; 129 130 char sc_is_open[USB_MAX_ENDPOINTS]; 131 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 132 #define OUT 0 133 #define IN 1 134 135 int sc_refcnt; 136 char sc_buffer[UGEN_BBSIZE]; 137 u_char sc_dying; 138 }; 139 140 static dev_type_open(ugenopen); 141 static dev_type_close(ugenclose); 142 static dev_type_read(ugenread); 143 static dev_type_write(ugenwrite); 144 static dev_type_ioctl(ugenioctl); 145 static dev_type_poll(ugenpoll); 146 static dev_type_kqfilter(ugenkqfilter); 147 148 const struct cdevsw ugen_cdevsw = { 149 .d_open = ugenopen, 150 .d_close = ugenclose, 151 .d_read = ugenread, 152 .d_write = ugenwrite, 153 .d_ioctl = ugenioctl, 154 .d_stop = nostop, 155 .d_tty = notty, 156 .d_poll = ugenpoll, 157 .d_mmap = nommap, 158 .d_kqfilter = ugenkqfilter, 159 .d_discard = nodiscard, 160 .d_flag = D_OTHER, 161 }; 162 163 Static void ugenintr(struct usbd_xfer *, void *, 164 usbd_status); 165 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 166 usbd_status); 167 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 168 usbd_status); 169 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 170 usbd_status); 171 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 172 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 173 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 174 void *, int, struct lwp *); 175 Static int ugen_set_config(struct ugen_softc *, int, int); 176 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 177 int, int *); 178 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 179 Static int ugen_get_alt_index(struct ugen_softc *, int); 180 Static void ugen_clear_endpoints(struct ugen_softc *); 181 182 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 183 #define UGENENDPOINT(n) (minor(n) & 0xf) 184 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 185 186 static int ugenif_match(device_t, cfdata_t, void *); 187 static void ugenif_attach(device_t, device_t, void *); 188 static int ugen_match(device_t, cfdata_t, void *); 189 static void ugen_attach(device_t, device_t, void *); 190 static int ugen_detach(device_t, int); 191 static int ugen_activate(device_t, enum devact); 192 193 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 194 ugen_attach, ugen_detach, ugen_activate); 195 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 196 ugenif_attach, ugen_detach, ugen_activate); 197 198 /* toggle to control attach priority. -1 means "let autoconf decide" */ 199 int ugen_override = -1; 200 201 static int 202 ugen_match(device_t parent, cfdata_t match, void *aux) 203 { 204 struct usb_attach_arg *uaa = aux; 205 int override; 206 207 if (ugen_override != -1) 208 override = ugen_override; 209 else 210 override = match->cf_flags & 1; 211 212 if (override) 213 return UMATCH_HIGHEST; 214 else if (uaa->uaa_usegeneric) 215 return UMATCH_GENERIC; 216 else 217 return UMATCH_NONE; 218 } 219 220 static int 221 ugenif_match(device_t parent, cfdata_t match, void *aux) 222 { 223 /* Assume that they knew what they configured! (see ugenif(4)) */ 224 return UMATCH_HIGHEST; 225 } 226 227 static 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 static 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 static 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 static 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 KASSERT(sc->sc_is_open[endpt]); 559 560 if (endpt == USB_CONTROL_ENDPOINT) { 561 DPRINTFN(5, ("ugenclose: close control\n")); 562 sc->sc_is_open[endpt] = 0; 563 return 0; 564 } 565 566 for (dir = OUT; dir <= IN; dir++) { 567 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 568 continue; 569 sce = &sc->sc_endpoints[endpt][dir]; 570 if (sce->pipeh == NULL) 571 continue; 572 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 573 endpt, dir, sce)); 574 575 usbd_abort_pipe(sce->pipeh); 576 577 int isize = UGETW(sce->edesc->wMaxPacketSize); 578 int msize = 0; 579 580 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 581 case UE_INTERRUPT: 582 ndflush(&sce->q, sce->q.c_cc); 583 clfree(&sce->q); 584 msize = isize; 585 break; 586 case UE_ISOCHRONOUS: 587 for (i = 0; i < UGEN_NISOREQS; ++i) 588 usbd_destroy_xfer(sce->isoreqs[i].xfer); 589 msize = isize * UGEN_NISOFRAMES; 590 break; 591 case UE_BULK: 592 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 593 usbd_destroy_xfer(sce->ra_wb_xfer); 594 msize = sce->ra_wb_bufsize; 595 } 596 break; 597 default: 598 break; 599 } 600 usbd_close_pipe(sce->pipeh); 601 sce->pipeh = NULL; 602 if (sce->ibuf != NULL) { 603 kmem_free(sce->ibuf, msize); 604 sce->ibuf = NULL; 605 } 606 } 607 sc->sc_is_open[endpt] = 0; 608 609 return 0; 610 } 611 612 Static int 613 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 614 { 615 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 616 uint32_t n, tn; 617 struct usbd_xfer *xfer; 618 usbd_status err; 619 int error = 0; 620 621 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 622 623 if (endpt == USB_CONTROL_ENDPOINT) 624 return ENODEV; 625 626 KASSERT(sce->edesc); 627 KASSERT(sce->pipeh); 628 629 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 630 case UE_INTERRUPT: 631 /* Block until activity occurred. */ 632 mutex_enter(&sc->sc_lock); 633 while (sce->q.c_cc == 0) { 634 if (flag & IO_NDELAY) { 635 mutex_exit(&sc->sc_lock); 636 return EWOULDBLOCK; 637 } 638 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 639 /* "ugenri" */ 640 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 641 mstohz(sce->timeout)); 642 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 643 if (sc->sc_dying) 644 error = EIO; 645 if (error) 646 break; 647 } 648 mutex_exit(&sc->sc_lock); 649 650 /* Transfer as many chunks as possible. */ 651 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 652 n = uimin(sce->q.c_cc, uio->uio_resid); 653 if (n > sizeof(sc->sc_buffer)) 654 n = sizeof(sc->sc_buffer); 655 656 /* Remove a small chunk from the input queue. */ 657 q_to_b(&sce->q, sc->sc_buffer, n); 658 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 659 660 /* Copy the data to the user process. */ 661 error = uiomove(sc->sc_buffer, n, uio); 662 if (error) 663 break; 664 } 665 break; 666 case UE_BULK: 667 if (sce->state & UGEN_BULK_RA) { 668 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 669 uio->uio_resid, sce->ra_wb_used)); 670 xfer = sce->ra_wb_xfer; 671 672 mutex_enter(&sc->sc_lock); 673 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 674 mutex_exit(&sc->sc_lock); 675 return EWOULDBLOCK; 676 } 677 while (uio->uio_resid > 0 && !error) { 678 while (sce->ra_wb_used == 0) { 679 DPRINTFN(5, 680 ("ugenread: sleep on %p\n", 681 sce)); 682 /* "ugenrb" */ 683 error = cv_timedwait_sig(&sce->cv, 684 &sc->sc_lock, mstohz(sce->timeout)); 685 DPRINTFN(5, 686 ("ugenread: woke, error=%d\n", 687 error)); 688 if (sc->sc_dying) 689 error = EIO; 690 if (error) 691 break; 692 } 693 694 /* Copy data to the process. */ 695 while (uio->uio_resid > 0 696 && sce->ra_wb_used > 0) { 697 n = uimin(uio->uio_resid, 698 sce->ra_wb_used); 699 n = uimin(n, sce->limit - sce->cur); 700 error = uiomove(sce->cur, n, uio); 701 if (error) 702 break; 703 sce->cur += n; 704 sce->ra_wb_used -= n; 705 if (sce->cur == sce->limit) 706 sce->cur = sce->ibuf; 707 } 708 709 /* 710 * If the transfers stopped because the 711 * buffer was full, restart them. 712 */ 713 if (sce->state & UGEN_RA_WB_STOP && 714 sce->ra_wb_used < sce->limit - sce->ibuf) { 715 n = (sce->limit - sce->ibuf) 716 - sce->ra_wb_used; 717 usbd_setup_xfer(xfer, sce, NULL, 718 uimin(n, sce->ra_wb_xferlen), 719 0, USBD_NO_TIMEOUT, 720 ugen_bulkra_intr); 721 sce->state &= ~UGEN_RA_WB_STOP; 722 err = usbd_transfer(xfer); 723 if (err != USBD_IN_PROGRESS) 724 /* 725 * The transfer has not been 726 * queued. Setting STOP 727 * will make us try 728 * again at the next read. 729 */ 730 sce->state |= UGEN_RA_WB_STOP; 731 } 732 } 733 mutex_exit(&sc->sc_lock); 734 break; 735 } 736 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 737 0, 0, &xfer); 738 if (error) 739 return error; 740 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 741 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 742 tn = n; 743 err = usbd_bulk_transfer(xfer, sce->pipeh, 744 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 745 sce->timeout, sc->sc_buffer, &tn); 746 if (err) { 747 if (err == USBD_INTERRUPTED) 748 error = EINTR; 749 else if (err == USBD_TIMEOUT) 750 error = ETIMEDOUT; 751 else 752 error = EIO; 753 break; 754 } 755 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 756 error = uiomove(sc->sc_buffer, tn, uio); 757 if (error || tn < n) 758 break; 759 } 760 usbd_destroy_xfer(xfer); 761 break; 762 case UE_ISOCHRONOUS: 763 mutex_enter(&sc->sc_lock); 764 while (sce->cur == sce->fill) { 765 if (flag & IO_NDELAY) { 766 mutex_exit(&sc->sc_lock); 767 return EWOULDBLOCK; 768 } 769 /* "ugenri" */ 770 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 771 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 772 mstohz(sce->timeout)); 773 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 774 if (sc->sc_dying) 775 error = EIO; 776 if (error) 777 break; 778 } 779 780 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 781 if(sce->fill > sce->cur) 782 n = uimin(sce->fill - sce->cur, uio->uio_resid); 783 else 784 n = uimin(sce->limit - sce->cur, uio->uio_resid); 785 786 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 787 788 /* Copy the data to the user process. */ 789 error = uiomove(sce->cur, n, uio); 790 if (error) 791 break; 792 sce->cur += n; 793 if (sce->cur >= sce->limit) 794 sce->cur = sce->ibuf; 795 } 796 mutex_exit(&sc->sc_lock); 797 break; 798 799 800 default: 801 return ENXIO; 802 } 803 return error; 804 } 805 806 static int 807 ugenread(dev_t dev, struct uio *uio, int flag) 808 { 809 int endpt = UGENENDPOINT(dev); 810 struct ugen_softc *sc; 811 int error; 812 813 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 814 if (sc == NULL || sc->sc_dying) 815 return ENXIO; 816 817 mutex_enter(&sc->sc_lock); 818 sc->sc_refcnt++; 819 mutex_exit(&sc->sc_lock); 820 821 error = ugen_do_read(sc, endpt, uio, flag); 822 823 mutex_enter(&sc->sc_lock); 824 if (--sc->sc_refcnt < 0) 825 cv_broadcast(&sc->sc_detach_cv); 826 mutex_exit(&sc->sc_lock); 827 828 return error; 829 } 830 831 Static int 832 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 833 int flag) 834 { 835 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 836 uint32_t n; 837 int error = 0; 838 uint32_t tn; 839 char *dbuf; 840 struct usbd_xfer *xfer; 841 usbd_status err; 842 843 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 844 845 if (endpt == USB_CONTROL_ENDPOINT) 846 return ENODEV; 847 848 KASSERT(sce->edesc); 849 KASSERT(sce->pipeh); 850 851 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 852 case UE_BULK: 853 if (sce->state & UGEN_BULK_WB) { 854 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 855 uio->uio_resid, sce->ra_wb_used)); 856 xfer = sce->ra_wb_xfer; 857 858 mutex_enter(&sc->sc_lock); 859 if (sce->ra_wb_used == sce->limit - sce->ibuf && 860 flag & IO_NDELAY) { 861 mutex_exit(&sc->sc_lock); 862 return EWOULDBLOCK; 863 } 864 while (uio->uio_resid > 0 && !error) { 865 while (sce->ra_wb_used == 866 sce->limit - sce->ibuf) { 867 DPRINTFN(5, 868 ("ugenwrite: sleep on %p\n", 869 sce)); 870 /* "ugenwb" */ 871 error = cv_timedwait_sig(&sce->cv, 872 &sc->sc_lock, mstohz(sce->timeout)); 873 DPRINTFN(5, 874 ("ugenwrite: woke, error=%d\n", 875 error)); 876 if (sc->sc_dying) 877 error = EIO; 878 if (error) 879 break; 880 } 881 882 /* Copy data from the process. */ 883 while (uio->uio_resid > 0 && 884 sce->ra_wb_used < sce->limit - sce->ibuf) { 885 n = uimin(uio->uio_resid, 886 (sce->limit - sce->ibuf) 887 - sce->ra_wb_used); 888 n = uimin(n, sce->limit - sce->fill); 889 error = uiomove(sce->fill, n, uio); 890 if (error) 891 break; 892 sce->fill += n; 893 sce->ra_wb_used += n; 894 if (sce->fill == sce->limit) 895 sce->fill = sce->ibuf; 896 } 897 898 /* 899 * If the transfers stopped because the 900 * buffer was empty, restart them. 901 */ 902 if (sce->state & UGEN_RA_WB_STOP && 903 sce->ra_wb_used > 0) { 904 dbuf = (char *)usbd_get_buffer(xfer); 905 n = uimin(sce->ra_wb_used, 906 sce->ra_wb_xferlen); 907 tn = uimin(n, sce->limit - sce->cur); 908 memcpy(dbuf, sce->cur, tn); 909 dbuf += tn; 910 if (n - tn > 0) 911 memcpy(dbuf, sce->ibuf, 912 n - tn); 913 usbd_setup_xfer(xfer, sce, NULL, n, 914 0, USBD_NO_TIMEOUT, 915 ugen_bulkwb_intr); 916 sce->state &= ~UGEN_RA_WB_STOP; 917 err = usbd_transfer(xfer); 918 if (err != USBD_IN_PROGRESS) 919 /* 920 * The transfer has not been 921 * queued. Setting STOP 922 * will make us try again 923 * at the next read. 924 */ 925 sce->state |= UGEN_RA_WB_STOP; 926 } 927 } 928 mutex_exit(&sc->sc_lock); 929 break; 930 } 931 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 932 0, 0, &xfer); 933 if (error) 934 return error; 935 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 936 error = uiomove(sc->sc_buffer, n, uio); 937 if (error) 938 break; 939 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 940 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 941 sc->sc_buffer, &n); 942 if (err) { 943 if (err == USBD_INTERRUPTED) 944 error = EINTR; 945 else if (err == USBD_TIMEOUT) 946 error = ETIMEDOUT; 947 else 948 error = EIO; 949 break; 950 } 951 } 952 usbd_destroy_xfer(xfer); 953 break; 954 case UE_INTERRUPT: 955 error = usbd_create_xfer(sce->pipeh, 956 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 957 if (error) 958 return error; 959 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 960 uio->uio_resid)) != 0) { 961 error = uiomove(sc->sc_buffer, n, uio); 962 if (error) 963 break; 964 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 965 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 966 sce->timeout, sc->sc_buffer, &n); 967 if (err) { 968 if (err == USBD_INTERRUPTED) 969 error = EINTR; 970 else if (err == USBD_TIMEOUT) 971 error = ETIMEDOUT; 972 else 973 error = EIO; 974 break; 975 } 976 } 977 usbd_destroy_xfer(xfer); 978 break; 979 default: 980 return ENXIO; 981 } 982 return error; 983 } 984 985 static int 986 ugenwrite(dev_t dev, struct uio *uio, int flag) 987 { 988 int endpt = UGENENDPOINT(dev); 989 struct ugen_softc *sc; 990 int error; 991 992 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 993 if (sc == NULL || sc->sc_dying) 994 return ENXIO; 995 996 mutex_enter(&sc->sc_lock); 997 sc->sc_refcnt++; 998 mutex_exit(&sc->sc_lock); 999 1000 error = ugen_do_write(sc, endpt, uio, flag); 1001 1002 mutex_enter(&sc->sc_lock); 1003 if (--sc->sc_refcnt < 0) 1004 cv_broadcast(&sc->sc_detach_cv); 1005 mutex_exit(&sc->sc_lock); 1006 1007 return error; 1008 } 1009 1010 static int 1011 ugen_activate(device_t self, enum devact act) 1012 { 1013 struct ugen_softc *sc = device_private(self); 1014 1015 switch (act) { 1016 case DVACT_DEACTIVATE: 1017 sc->sc_dying = 1; 1018 return 0; 1019 default: 1020 return EOPNOTSUPP; 1021 } 1022 } 1023 1024 static int 1025 ugen_detach(device_t self, int flags) 1026 { 1027 struct ugen_softc *sc = device_private(self); 1028 struct ugen_endpoint *sce; 1029 int i, dir; 1030 int maj, mn; 1031 1032 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1033 1034 sc->sc_dying = 1; 1035 pmf_device_deregister(self); 1036 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1037 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1038 for (dir = OUT; dir <= IN; dir++) { 1039 sce = &sc->sc_endpoints[i][dir]; 1040 if (sce->pipeh) 1041 usbd_abort_pipe(sce->pipeh); 1042 } 1043 } 1044 1045 mutex_enter(&sc->sc_lock); 1046 if (--sc->sc_refcnt >= 0) { 1047 /* Wake everyone */ 1048 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1049 cv_signal(&sc->sc_endpoints[i][IN].cv); 1050 /* Wait for processes to go away. */ 1051 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1052 aprint_error_dev(self, ": didn't detach\n"); 1053 } 1054 mutex_exit(&sc->sc_lock); 1055 1056 /* locate the major number */ 1057 maj = cdevsw_lookup_major(&ugen_cdevsw); 1058 1059 /* Nuke the vnodes for any open instances (calls close). */ 1060 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1061 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1062 1063 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1064 1065 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1066 for (dir = OUT; dir <= IN; dir++) { 1067 sce = &sc->sc_endpoints[i][dir]; 1068 seldestroy(&sce->rsel); 1069 cv_destroy(&sce->cv); 1070 } 1071 } 1072 1073 cv_destroy(&sc->sc_detach_cv); 1074 mutex_destroy(&sc->sc_lock); 1075 1076 return 0; 1077 } 1078 1079 Static void 1080 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1081 { 1082 struct ugen_endpoint *sce = addr; 1083 struct ugen_softc *sc = sce->sc; 1084 uint32_t count; 1085 u_char *ibuf; 1086 1087 if (status == USBD_CANCELLED) 1088 return; 1089 1090 if (status != USBD_NORMAL_COMPLETION) { 1091 DPRINTF(("ugenintr: status=%d\n", status)); 1092 if (status == USBD_STALLED) 1093 usbd_clear_endpoint_stall_async(sce->pipeh); 1094 return; 1095 } 1096 1097 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1098 ibuf = sce->ibuf; 1099 1100 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1101 xfer, status, count)); 1102 DPRINTFN(5, (" data = %02x %02x %02x\n", 1103 ibuf[0], ibuf[1], ibuf[2])); 1104 1105 mutex_enter(&sc->sc_lock); 1106 (void)b_to_q(ibuf, count, &sce->q); 1107 cv_signal(&sce->cv); 1108 mutex_exit(&sc->sc_lock); 1109 selnotify(&sce->rsel, 0, 0); 1110 } 1111 1112 Static void 1113 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1114 usbd_status status) 1115 { 1116 struct isoreq *req = addr; 1117 struct ugen_endpoint *sce = req->sce; 1118 struct ugen_softc *sc = sce->sc; 1119 uint32_t count, n; 1120 int i, isize; 1121 1122 /* Return if we are aborting. */ 1123 if (status == USBD_CANCELLED) 1124 return; 1125 1126 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1127 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1128 (long)(req - sce->isoreqs), count)); 1129 1130 mutex_enter(&sc->sc_lock); 1131 1132 /* throw away oldest input if the buffer is full */ 1133 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1134 sce->cur += count; 1135 if (sce->cur >= sce->limit) 1136 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1137 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1138 count)); 1139 } 1140 1141 isize = UGETW(sce->edesc->wMaxPacketSize); 1142 for (i = 0; i < UGEN_NISORFRMS; i++) { 1143 uint32_t actlen = req->sizes[i]; 1144 char const *tbuf = (char const *)req->dmabuf + isize * i; 1145 1146 /* copy data to buffer */ 1147 while (actlen > 0) { 1148 n = uimin(actlen, sce->limit - sce->fill); 1149 memcpy(sce->fill, tbuf, n); 1150 1151 tbuf += n; 1152 actlen -= n; 1153 sce->fill += n; 1154 if (sce->fill == sce->limit) 1155 sce->fill = sce->ibuf; 1156 } 1157 1158 /* setup size for next transfer */ 1159 req->sizes[i] = isize; 1160 } 1161 1162 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1163 ugen_isoc_rintr); 1164 (void)usbd_transfer(xfer); 1165 1166 cv_signal(&sce->cv); 1167 mutex_exit(&sc->sc_lock); 1168 selnotify(&sce->rsel, 0, 0); 1169 } 1170 1171 Static void 1172 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1173 usbd_status status) 1174 { 1175 struct ugen_endpoint *sce = addr; 1176 struct ugen_softc *sc = sce->sc; 1177 uint32_t count, n; 1178 char const *tbuf; 1179 usbd_status err; 1180 1181 /* Return if we are aborting. */ 1182 if (status == USBD_CANCELLED) 1183 return; 1184 1185 if (status != USBD_NORMAL_COMPLETION) { 1186 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1187 sce->state |= UGEN_RA_WB_STOP; 1188 if (status == USBD_STALLED) 1189 usbd_clear_endpoint_stall_async(sce->pipeh); 1190 return; 1191 } 1192 1193 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1194 1195 mutex_enter(&sc->sc_lock); 1196 1197 /* Keep track of how much is in the buffer. */ 1198 sce->ra_wb_used += count; 1199 1200 /* Copy data to buffer. */ 1201 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1202 n = uimin(count, sce->limit - sce->fill); 1203 memcpy(sce->fill, tbuf, n); 1204 tbuf += n; 1205 count -= n; 1206 sce->fill += n; 1207 if (sce->fill == sce->limit) 1208 sce->fill = sce->ibuf; 1209 if (count > 0) { 1210 memcpy(sce->fill, tbuf, count); 1211 sce->fill += count; 1212 } 1213 1214 /* Set up the next request if necessary. */ 1215 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1216 if (n > 0) { 1217 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1218 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1219 err = usbd_transfer(xfer); 1220 if (err != USBD_IN_PROGRESS) { 1221 printf("usbd_bulkra_intr: error=%d\n", err); 1222 /* 1223 * The transfer has not been queued. Setting STOP 1224 * will make us try again at the next read. 1225 */ 1226 sce->state |= UGEN_RA_WB_STOP; 1227 } 1228 } 1229 else 1230 sce->state |= UGEN_RA_WB_STOP; 1231 1232 cv_signal(&sce->cv); 1233 mutex_exit(&sc->sc_lock); 1234 selnotify(&sce->rsel, 0, 0); 1235 } 1236 1237 Static void 1238 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1239 usbd_status status) 1240 { 1241 struct ugen_endpoint *sce = addr; 1242 struct ugen_softc *sc = sce->sc; 1243 uint32_t count, n; 1244 char *tbuf; 1245 usbd_status err; 1246 1247 /* Return if we are aborting. */ 1248 if (status == USBD_CANCELLED) 1249 return; 1250 1251 if (status != USBD_NORMAL_COMPLETION) { 1252 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1253 sce->state |= UGEN_RA_WB_STOP; 1254 if (status == USBD_STALLED) 1255 usbd_clear_endpoint_stall_async(sce->pipeh); 1256 return; 1257 } 1258 1259 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1260 1261 mutex_enter(&sc->sc_lock); 1262 1263 /* Keep track of how much is in the buffer. */ 1264 sce->ra_wb_used -= count; 1265 1266 /* Update buffer pointers. */ 1267 sce->cur += count; 1268 if (sce->cur >= sce->limit) 1269 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1270 1271 /* Set up next request if necessary. */ 1272 if (sce->ra_wb_used > 0) { 1273 /* copy data from buffer */ 1274 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1275 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1276 n = uimin(count, sce->limit - sce->cur); 1277 memcpy(tbuf, sce->cur, n); 1278 tbuf += n; 1279 if (count - n > 0) 1280 memcpy(tbuf, sce->ibuf, count - n); 1281 1282 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1283 ugen_bulkwb_intr); 1284 err = usbd_transfer(xfer); 1285 if (err != USBD_IN_PROGRESS) { 1286 printf("usbd_bulkwb_intr: error=%d\n", err); 1287 /* 1288 * The transfer has not been queued. Setting STOP 1289 * will make us try again at the next write. 1290 */ 1291 sce->state |= UGEN_RA_WB_STOP; 1292 } 1293 } 1294 else 1295 sce->state |= UGEN_RA_WB_STOP; 1296 1297 cv_signal(&sce->cv); 1298 mutex_exit(&sc->sc_lock); 1299 selnotify(&sce->rsel, 0, 0); 1300 } 1301 1302 Static usbd_status 1303 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1304 { 1305 struct usbd_interface *iface; 1306 usb_endpoint_descriptor_t *ed; 1307 usbd_status err; 1308 struct ugen_endpoint *sce; 1309 uint8_t niface, nendpt, endptno, endpt; 1310 int dir; 1311 1312 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1313 1314 err = usbd_interface_count(sc->sc_udev, &niface); 1315 if (err) 1316 return err; 1317 if (ifaceidx < 0 || ifaceidx >= niface) 1318 return USBD_INVAL; 1319 1320 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1321 if (err) 1322 return err; 1323 err = usbd_endpoint_count(iface, &nendpt); 1324 if (err) 1325 return err; 1326 1327 /* change setting */ 1328 err = usbd_set_interface(iface, altno); 1329 if (err) 1330 return err; 1331 1332 err = usbd_endpoint_count(iface, &nendpt); 1333 if (err) 1334 return err; 1335 1336 ugen_clear_endpoints(sc); 1337 1338 for (endptno = 0; endptno < nendpt; endptno++) { 1339 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1340 KASSERT(ed != NULL); 1341 endpt = ed->bEndpointAddress; 1342 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1343 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1344 sce->sc = sc; 1345 sce->edesc = ed; 1346 sce->iface = iface; 1347 } 1348 return 0; 1349 } 1350 1351 /* Retrieve a complete descriptor for a certain device and index. */ 1352 Static usb_config_descriptor_t * 1353 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1354 { 1355 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1356 int len; 1357 usbd_status err; 1358 1359 if (index == USB_CURRENT_CONFIG_INDEX) { 1360 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1361 if (tdesc == NULL) 1362 return NULL; 1363 len = UGETW(tdesc->wTotalLength); 1364 if (lenp) 1365 *lenp = len; 1366 cdesc = kmem_alloc(len, KM_SLEEP); 1367 memcpy(cdesc, tdesc, len); 1368 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1369 } else { 1370 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1371 if (err) 1372 return 0; 1373 len = UGETW(cdescr.wTotalLength); 1374 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1375 if (lenp) 1376 *lenp = len; 1377 cdesc = kmem_alloc(len, KM_SLEEP); 1378 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1379 if (err) { 1380 kmem_free(cdesc, len); 1381 return 0; 1382 } 1383 } 1384 return cdesc; 1385 } 1386 1387 Static int 1388 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1389 { 1390 struct usbd_interface *iface; 1391 usbd_status err; 1392 1393 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1394 if (err) 1395 return -1; 1396 return usbd_get_interface_altindex(iface); 1397 } 1398 1399 Static int 1400 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1401 void *addr, int flag, struct lwp *l) 1402 { 1403 struct ugen_endpoint *sce; 1404 usbd_status err; 1405 struct usbd_interface *iface; 1406 struct usb_config_desc *cd; 1407 usb_config_descriptor_t *cdesc; 1408 struct usb_interface_desc *id; 1409 usb_interface_descriptor_t *idesc; 1410 struct usb_endpoint_desc *ed; 1411 usb_endpoint_descriptor_t *edesc; 1412 struct usb_alt_interface *ai; 1413 struct usb_string_desc *si; 1414 uint8_t conf, alt; 1415 int cdesclen; 1416 int error; 1417 int dir; 1418 1419 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1420 if (sc->sc_dying) 1421 return EIO; 1422 1423 switch (cmd) { 1424 case FIONBIO: 1425 /* All handled in the upper FS layer. */ 1426 return 0; 1427 case USB_SET_SHORT_XFER: 1428 if (endpt == USB_CONTROL_ENDPOINT) 1429 return EINVAL; 1430 /* This flag only affects read */ 1431 sce = &sc->sc_endpoints[endpt][IN]; 1432 if (sce == NULL || sce->pipeh == NULL) 1433 return EINVAL; 1434 if (*(int *)addr) 1435 sce->state |= UGEN_SHORT_OK; 1436 else 1437 sce->state &= ~UGEN_SHORT_OK; 1438 return 0; 1439 case USB_SET_TIMEOUT: 1440 for (dir = OUT; dir <= IN; dir++) { 1441 sce = &sc->sc_endpoints[endpt][dir]; 1442 if (sce == NULL) 1443 return EINVAL; 1444 1445 sce->timeout = *(int *)addr; 1446 } 1447 return 0; 1448 case USB_SET_BULK_RA: 1449 if (endpt == USB_CONTROL_ENDPOINT) 1450 return EINVAL; 1451 sce = &sc->sc_endpoints[endpt][IN]; 1452 if (sce == NULL || sce->pipeh == NULL) 1453 return EINVAL; 1454 edesc = sce->edesc; 1455 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1456 return EINVAL; 1457 1458 if (*(int *)addr) { 1459 /* Only turn RA on if it's currently off. */ 1460 if (sce->state & UGEN_BULK_RA) 1461 return 0; 1462 1463 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1464 /* shouldn't happen */ 1465 return EINVAL; 1466 error = usbd_create_xfer(sce->pipeh, 1467 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1468 if (error) 1469 return error; 1470 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1471 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1472 sce->fill = sce->cur = sce->ibuf; 1473 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1474 sce->ra_wb_used = 0; 1475 sce->state |= UGEN_BULK_RA; 1476 sce->state &= ~UGEN_RA_WB_STOP; 1477 /* Now start reading. */ 1478 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1479 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1480 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1481 err = usbd_transfer(sce->ra_wb_xfer); 1482 if (err != USBD_IN_PROGRESS) { 1483 sce->state &= ~UGEN_BULK_RA; 1484 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1485 sce->ibuf = NULL; 1486 usbd_destroy_xfer(sce->ra_wb_xfer); 1487 return EIO; 1488 } 1489 } else { 1490 /* Only turn RA off if it's currently on. */ 1491 if (!(sce->state & UGEN_BULK_RA)) 1492 return 0; 1493 1494 sce->state &= ~UGEN_BULK_RA; 1495 usbd_abort_pipe(sce->pipeh); 1496 usbd_destroy_xfer(sce->ra_wb_xfer); 1497 /* 1498 * XXX Discard whatever's in the buffer, but we 1499 * should keep it around and drain the buffer 1500 * instead. 1501 */ 1502 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1503 sce->ibuf = NULL; 1504 } 1505 return 0; 1506 case USB_SET_BULK_WB: 1507 if (endpt == USB_CONTROL_ENDPOINT) 1508 return EINVAL; 1509 sce = &sc->sc_endpoints[endpt][OUT]; 1510 if (sce == NULL || sce->pipeh == NULL) 1511 return EINVAL; 1512 edesc = sce->edesc; 1513 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1514 return EINVAL; 1515 1516 if (*(int *)addr) { 1517 /* Only turn WB on if it's currently off. */ 1518 if (sce->state & UGEN_BULK_WB) 1519 return 0; 1520 1521 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1522 /* shouldn't happen */ 1523 return EINVAL; 1524 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1525 0, 0, &sce->ra_wb_xfer); 1526 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1527 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1528 sce->fill = sce->cur = sce->ibuf; 1529 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1530 sce->ra_wb_used = 0; 1531 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1532 } else { 1533 /* Only turn WB off if it's currently on. */ 1534 if (!(sce->state & UGEN_BULK_WB)) 1535 return 0; 1536 1537 sce->state &= ~UGEN_BULK_WB; 1538 /* 1539 * XXX Discard whatever's in the buffer, but we 1540 * should keep it around and keep writing to 1541 * drain the buffer instead. 1542 */ 1543 usbd_abort_pipe(sce->pipeh); 1544 usbd_destroy_xfer(sce->ra_wb_xfer); 1545 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1546 sce->ibuf = NULL; 1547 } 1548 return 0; 1549 case USB_SET_BULK_RA_OPT: 1550 case USB_SET_BULK_WB_OPT: 1551 { 1552 struct usb_bulk_ra_wb_opt *opt; 1553 1554 if (endpt == USB_CONTROL_ENDPOINT) 1555 return EINVAL; 1556 opt = (struct usb_bulk_ra_wb_opt *)addr; 1557 if (cmd == USB_SET_BULK_RA_OPT) 1558 sce = &sc->sc_endpoints[endpt][IN]; 1559 else 1560 sce = &sc->sc_endpoints[endpt][OUT]; 1561 if (sce == NULL || sce->pipeh == NULL) 1562 return EINVAL; 1563 if (opt->ra_wb_buffer_size < 1 || 1564 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1565 opt->ra_wb_request_size < 1 || 1566 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1567 return EINVAL; 1568 /* 1569 * XXX These changes do not take effect until the 1570 * next time RA/WB mode is enabled but they ought to 1571 * take effect immediately. 1572 */ 1573 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1574 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1575 return 0; 1576 } 1577 default: 1578 break; 1579 } 1580 1581 if (endpt != USB_CONTROL_ENDPOINT) 1582 return EINVAL; 1583 1584 switch (cmd) { 1585 #ifdef UGEN_DEBUG 1586 case USB_SETDEBUG: 1587 ugendebug = *(int *)addr; 1588 break; 1589 #endif 1590 case USB_GET_CONFIG: 1591 err = usbd_get_config(sc->sc_udev, &conf); 1592 if (err) 1593 return EIO; 1594 *(int *)addr = conf; 1595 break; 1596 case USB_SET_CONFIG: 1597 if (!(flag & FWRITE)) 1598 return EPERM; 1599 err = ugen_set_config(sc, *(int *)addr, 1); 1600 switch (err) { 1601 case USBD_NORMAL_COMPLETION: 1602 break; 1603 case USBD_IN_USE: 1604 return EBUSY; 1605 default: 1606 return EIO; 1607 } 1608 break; 1609 case USB_GET_ALTINTERFACE: 1610 ai = (struct usb_alt_interface *)addr; 1611 err = usbd_device2interface_handle(sc->sc_udev, 1612 ai->uai_interface_index, &iface); 1613 if (err) 1614 return EINVAL; 1615 idesc = usbd_get_interface_descriptor(iface); 1616 if (idesc == NULL) 1617 return EIO; 1618 ai->uai_alt_no = idesc->bAlternateSetting; 1619 break; 1620 case USB_SET_ALTINTERFACE: 1621 if (!(flag & FWRITE)) 1622 return EPERM; 1623 ai = (struct usb_alt_interface *)addr; 1624 err = usbd_device2interface_handle(sc->sc_udev, 1625 ai->uai_interface_index, &iface); 1626 if (err) 1627 return EINVAL; 1628 err = ugen_set_interface(sc, ai->uai_interface_index, 1629 ai->uai_alt_no); 1630 if (err) 1631 return EINVAL; 1632 break; 1633 case USB_GET_NO_ALT: 1634 ai = (struct usb_alt_interface *)addr; 1635 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1636 if (cdesc == NULL) 1637 return EINVAL; 1638 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1639 if (idesc == NULL) { 1640 kmem_free(cdesc, cdesclen); 1641 return EINVAL; 1642 } 1643 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1644 idesc->bInterfaceNumber); 1645 kmem_free(cdesc, cdesclen); 1646 break; 1647 case USB_GET_DEVICE_DESC: 1648 *(usb_device_descriptor_t *)addr = 1649 *usbd_get_device_descriptor(sc->sc_udev); 1650 break; 1651 case USB_GET_CONFIG_DESC: 1652 cd = (struct usb_config_desc *)addr; 1653 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1654 if (cdesc == NULL) 1655 return EINVAL; 1656 cd->ucd_desc = *cdesc; 1657 kmem_free(cdesc, cdesclen); 1658 break; 1659 case USB_GET_INTERFACE_DESC: 1660 id = (struct usb_interface_desc *)addr; 1661 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1662 if (cdesc == NULL) 1663 return EINVAL; 1664 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1665 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1666 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1667 else 1668 alt = id->uid_alt_index; 1669 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1670 if (idesc == NULL) { 1671 kmem_free(cdesc, cdesclen); 1672 return EINVAL; 1673 } 1674 id->uid_desc = *idesc; 1675 kmem_free(cdesc, cdesclen); 1676 break; 1677 case USB_GET_ENDPOINT_DESC: 1678 ed = (struct usb_endpoint_desc *)addr; 1679 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1680 if (cdesc == NULL) 1681 return EINVAL; 1682 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1683 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1684 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1685 else 1686 alt = ed->ued_alt_index; 1687 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1688 alt, ed->ued_endpoint_index); 1689 if (edesc == NULL) { 1690 kmem_free(cdesc, cdesclen); 1691 return EINVAL; 1692 } 1693 ed->ued_desc = *edesc; 1694 kmem_free(cdesc, cdesclen); 1695 break; 1696 case USB_GET_FULL_DESC: 1697 { 1698 int len; 1699 struct iovec iov; 1700 struct uio uio; 1701 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1702 1703 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1704 if (cdesc == NULL) 1705 return EINVAL; 1706 len = cdesclen; 1707 if (len > fd->ufd_size) 1708 len = fd->ufd_size; 1709 iov.iov_base = (void *)fd->ufd_data; 1710 iov.iov_len = len; 1711 uio.uio_iov = &iov; 1712 uio.uio_iovcnt = 1; 1713 uio.uio_resid = len; 1714 uio.uio_offset = 0; 1715 uio.uio_rw = UIO_READ; 1716 uio.uio_vmspace = l->l_proc->p_vmspace; 1717 error = uiomove((void *)cdesc, len, &uio); 1718 kmem_free(cdesc, cdesclen); 1719 return error; 1720 } 1721 case USB_GET_STRING_DESC: { 1722 int len; 1723 si = (struct usb_string_desc *)addr; 1724 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1725 si->usd_language_id, &si->usd_desc, &len); 1726 if (err) 1727 return EINVAL; 1728 break; 1729 } 1730 case USB_DO_REQUEST: 1731 { 1732 struct usb_ctl_request *ur = (void *)addr; 1733 int len = UGETW(ur->ucr_request.wLength); 1734 struct iovec iov; 1735 struct uio uio; 1736 void *ptr = 0; 1737 usbd_status xerr; 1738 1739 error = 0; 1740 1741 if (!(flag & FWRITE)) 1742 return EPERM; 1743 /* Avoid requests that would damage the bus integrity. */ 1744 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1745 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1746 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1747 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1748 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1749 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1750 return EINVAL; 1751 1752 if (len < 0 || len > 32767) 1753 return EINVAL; 1754 if (len != 0) { 1755 iov.iov_base = (void *)ur->ucr_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 = 1762 ur->ucr_request.bmRequestType & UT_READ ? 1763 UIO_READ : UIO_WRITE; 1764 uio.uio_vmspace = l->l_proc->p_vmspace; 1765 ptr = kmem_alloc(len, KM_SLEEP); 1766 if (uio.uio_rw == UIO_WRITE) { 1767 error = uiomove(ptr, len, &uio); 1768 if (error) 1769 goto ret; 1770 } 1771 } 1772 sce = &sc->sc_endpoints[endpt][IN]; 1773 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1774 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1775 if (xerr) { 1776 error = EIO; 1777 goto ret; 1778 } 1779 if (len != 0) { 1780 if (uio.uio_rw == UIO_READ) { 1781 size_t alen = uimin(len, ur->ucr_actlen); 1782 error = uiomove(ptr, alen, &uio); 1783 if (error) 1784 goto ret; 1785 } 1786 } 1787 ret: 1788 if (ptr) 1789 kmem_free(ptr, len); 1790 return error; 1791 } 1792 case USB_GET_DEVICEINFO: 1793 usbd_fill_deviceinfo(sc->sc_udev, 1794 (struct usb_device_info *)addr, 0); 1795 break; 1796 case USB_GET_DEVICEINFO_OLD: 1797 { 1798 int ret; 1799 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1800 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1801 usbd_devinfo_vp, usbd_printBCD), 1802 enosys(), ret); 1803 if (ret == 0) 1804 return 0; 1805 return EINVAL; 1806 } 1807 default: 1808 return EINVAL; 1809 } 1810 return 0; 1811 } 1812 1813 static int 1814 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1815 { 1816 int endpt = UGENENDPOINT(dev); 1817 struct ugen_softc *sc; 1818 int error; 1819 1820 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1821 if (sc == NULL || sc->sc_dying) 1822 return ENXIO; 1823 1824 sc->sc_refcnt++; 1825 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1826 if (--sc->sc_refcnt < 0) 1827 cv_broadcast(&sc->sc_detach_cv); 1828 return error; 1829 } 1830 1831 static int 1832 ugenpoll(dev_t dev, int events, struct lwp *l) 1833 { 1834 struct ugen_softc *sc; 1835 struct ugen_endpoint *sce_in, *sce_out; 1836 int revents = 0; 1837 1838 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1839 if (sc == NULL) 1840 return ENXIO; 1841 1842 if (sc->sc_dying) 1843 return POLLHUP; 1844 1845 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 1846 return ENODEV; 1847 1848 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1849 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1850 KASSERT(sce_in->edesc || sce_out->edesc); 1851 KASSERT(sce_in->pipeh || sce_out->pipeh); 1852 1853 mutex_enter(&sc->sc_lock); 1854 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1855 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1856 case UE_INTERRUPT: 1857 if (sce_in->q.c_cc > 0) 1858 revents |= events & (POLLIN | POLLRDNORM); 1859 else 1860 selrecord(l, &sce_in->rsel); 1861 break; 1862 case UE_ISOCHRONOUS: 1863 if (sce_in->cur != sce_in->fill) 1864 revents |= events & (POLLIN | POLLRDNORM); 1865 else 1866 selrecord(l, &sce_in->rsel); 1867 break; 1868 case UE_BULK: 1869 if (sce_in->state & UGEN_BULK_RA) { 1870 if (sce_in->ra_wb_used > 0) 1871 revents |= events & 1872 (POLLIN | POLLRDNORM); 1873 else 1874 selrecord(l, &sce_in->rsel); 1875 break; 1876 } 1877 /* 1878 * We have no easy way of determining if a read will 1879 * yield any data or a write will happen. 1880 * Pretend they will. 1881 */ 1882 revents |= events & (POLLIN | POLLRDNORM); 1883 break; 1884 default: 1885 break; 1886 } 1887 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1888 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1889 case UE_INTERRUPT: 1890 case UE_ISOCHRONOUS: 1891 /* XXX unimplemented */ 1892 break; 1893 case UE_BULK: 1894 if (sce_out->state & UGEN_BULK_WB) { 1895 if (sce_out->ra_wb_used < 1896 sce_out->limit - sce_out->ibuf) 1897 revents |= events & 1898 (POLLOUT | POLLWRNORM); 1899 else 1900 selrecord(l, &sce_out->rsel); 1901 break; 1902 } 1903 /* 1904 * We have no easy way of determining if a read will 1905 * yield any data or a write will happen. 1906 * Pretend they will. 1907 */ 1908 revents |= events & (POLLOUT | POLLWRNORM); 1909 break; 1910 default: 1911 break; 1912 } 1913 1914 mutex_exit(&sc->sc_lock); 1915 1916 return revents; 1917 } 1918 1919 static void 1920 filt_ugenrdetach(struct knote *kn) 1921 { 1922 struct ugen_endpoint *sce = kn->kn_hook; 1923 struct ugen_softc *sc = sce->sc; 1924 1925 mutex_enter(&sc->sc_lock); 1926 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1927 mutex_exit(&sc->sc_lock); 1928 } 1929 1930 static int 1931 filt_ugenread_intr(struct knote *kn, long hint) 1932 { 1933 struct ugen_endpoint *sce = kn->kn_hook; 1934 struct ugen_softc *sc = sce->sc; 1935 int ret; 1936 1937 mutex_enter(&sc->sc_lock); 1938 if (sc->sc_dying) { 1939 ret = 0; 1940 } else { 1941 kn->kn_data = sce->q.c_cc; 1942 ret = kn->kn_data > 0; 1943 } 1944 mutex_exit(&sc->sc_lock); 1945 1946 return ret; 1947 } 1948 1949 static int 1950 filt_ugenread_isoc(struct knote *kn, long hint) 1951 { 1952 struct ugen_endpoint *sce = kn->kn_hook; 1953 struct ugen_softc *sc = sce->sc; 1954 int ret; 1955 1956 mutex_enter(&sc->sc_lock); 1957 if (sc->sc_dying) { 1958 ret = 0; 1959 } else if (sce->cur == sce->fill) { 1960 ret = 0; 1961 } else if (sce->cur < sce->fill) { 1962 kn->kn_data = sce->fill - sce->cur; 1963 ret = 1; 1964 } else { 1965 kn->kn_data = (sce->limit - sce->cur) + 1966 (sce->fill - sce->ibuf); 1967 ret = 1; 1968 } 1969 mutex_exit(&sc->sc_lock); 1970 1971 return ret; 1972 } 1973 1974 static int 1975 filt_ugenread_bulk(struct knote *kn, long hint) 1976 { 1977 struct ugen_endpoint *sce = kn->kn_hook; 1978 struct ugen_softc *sc = sce->sc; 1979 int ret; 1980 1981 mutex_enter(&sc->sc_lock); 1982 if (sc->sc_dying) { 1983 ret = 0; 1984 } else if (!(sce->state & UGEN_BULK_RA)) { 1985 /* 1986 * We have no easy way of determining if a read will 1987 * yield any data or a write will happen. 1988 * So, emulate "seltrue". 1989 */ 1990 ret = filt_seltrue(kn, hint); 1991 } else if (sce->ra_wb_used == 0) { 1992 ret = 0; 1993 } else { 1994 kn->kn_data = sce->ra_wb_used; 1995 ret = 1; 1996 } 1997 mutex_exit(&sc->sc_lock); 1998 1999 return ret; 2000 } 2001 2002 static int 2003 filt_ugenwrite_bulk(struct knote *kn, long hint) 2004 { 2005 struct ugen_endpoint *sce = kn->kn_hook; 2006 struct ugen_softc *sc = sce->sc; 2007 int ret; 2008 2009 mutex_enter(&sc->sc_lock); 2010 if (sc->sc_dying) { 2011 ret = 0; 2012 } else if (!(sce->state & UGEN_BULK_WB)) { 2013 /* 2014 * We have no easy way of determining if a read will 2015 * yield any data or a write will happen. 2016 * So, emulate "seltrue". 2017 */ 2018 ret = filt_seltrue(kn, hint); 2019 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2020 ret = 0; 2021 } else { 2022 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2023 ret = 1; 2024 } 2025 mutex_exit(&sc->sc_lock); 2026 2027 return ret; 2028 } 2029 2030 static const struct filterops ugenread_intr_filtops = { 2031 .f_isfd = 1, 2032 .f_attach = NULL, 2033 .f_detach = filt_ugenrdetach, 2034 .f_event = filt_ugenread_intr, 2035 }; 2036 2037 static const struct filterops ugenread_isoc_filtops = { 2038 .f_isfd = 1, 2039 .f_attach = NULL, 2040 .f_detach = filt_ugenrdetach, 2041 .f_event = filt_ugenread_isoc, 2042 }; 2043 2044 static const struct filterops ugenread_bulk_filtops = { 2045 .f_isfd = 1, 2046 .f_attach = NULL, 2047 .f_detach = filt_ugenrdetach, 2048 .f_event = filt_ugenread_bulk, 2049 }; 2050 2051 static const struct filterops ugenwrite_bulk_filtops = { 2052 .f_isfd = 1, 2053 .f_attach = NULL, 2054 .f_detach = filt_ugenrdetach, 2055 .f_event = filt_ugenwrite_bulk, 2056 }; 2057 2058 static int 2059 ugenkqfilter(dev_t dev, struct knote *kn) 2060 { 2061 struct ugen_softc *sc; 2062 struct ugen_endpoint *sce; 2063 struct klist *klist; 2064 2065 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2066 if (sc == NULL || sc->sc_dying) 2067 return ENXIO; 2068 2069 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) 2070 return ENODEV; 2071 2072 switch (kn->kn_filter) { 2073 case EVFILT_READ: 2074 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2075 if (sce == NULL) 2076 return EINVAL; 2077 2078 klist = &sce->rsel.sel_klist; 2079 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2080 case UE_INTERRUPT: 2081 kn->kn_fop = &ugenread_intr_filtops; 2082 break; 2083 case UE_ISOCHRONOUS: 2084 kn->kn_fop = &ugenread_isoc_filtops; 2085 break; 2086 case UE_BULK: 2087 kn->kn_fop = &ugenread_bulk_filtops; 2088 break; 2089 default: 2090 return EINVAL; 2091 } 2092 break; 2093 2094 case EVFILT_WRITE: 2095 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2096 if (sce == NULL) 2097 return EINVAL; 2098 2099 klist = &sce->rsel.sel_klist; 2100 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2101 case UE_INTERRUPT: 2102 case UE_ISOCHRONOUS: 2103 /* XXX poll doesn't support this */ 2104 return EINVAL; 2105 2106 case UE_BULK: 2107 kn->kn_fop = &ugenwrite_bulk_filtops; 2108 break; 2109 default: 2110 return EINVAL; 2111 } 2112 break; 2113 2114 default: 2115 return EINVAL; 2116 } 2117 2118 kn->kn_hook = sce; 2119 2120 mutex_enter(&sc->sc_lock); 2121 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2122 mutex_exit(&sc->sc_lock); 2123 2124 return 0; 2125 } 2126
Indexes created Sat Sep 27 22:09:54 GMT 2025