ugen.c revision 1.111
1 /* $NetBSD: ugen.c,v 1.111 2010/11/03 22:34:23 dyoung 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 1.111 2010/11/03 22:34:23 dyoung Exp $"); 41 42 #include "opt_compat_netbsd.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/malloc.h> 48 #if defined(__NetBSD__) || defined(__OpenBSD__) 49 #include <sys/device.h> 50 #include <sys/ioctl.h> 51 #elif defined(__FreeBSD__) 52 #include <sys/module.h> 53 #include <sys/bus.h> 54 #include <sys/ioccom.h> 55 #include <sys/conf.h> 56 #include <sys/fcntl.h> 57 #include <sys/filio.h> 58 #endif 59 #include <sys/conf.h> 60 #include <sys/tty.h> 61 #include <sys/file.h> 62 #include <sys/select.h> 63 #include <sys/proc.h> 64 #include <sys/vnode.h> 65 #include <sys/poll.h> 66 67 #include <dev/usb/usb.h> 68 #include <dev/usb/usbdi.h> 69 #include <dev/usb/usbdi_util.h> 70 71 #ifdef UGEN_DEBUG 72 #define DPRINTF(x) if (ugendebug) printf x 73 #define DPRINTFN(n,x) if (ugendebug>(n)) printf x 74 int ugendebug = 0; 75 #else 76 #define DPRINTF(x) 77 #define DPRINTFN(n,x) 78 #endif 79 80 #define UGEN_CHUNK 128 /* chunk size for read */ 81 #define UGEN_IBSIZE 1020 /* buffer size */ 82 #define UGEN_BBSIZE 1024 83 84 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 85 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 86 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 87 88 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 89 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 90 91 struct ugen_endpoint { 92 struct ugen_softc *sc; 93 usb_endpoint_descriptor_t *edesc; 94 usbd_interface_handle iface; 95 int state; 96 #define UGEN_ASLP 0x02 /* waiting for data */ 97 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 98 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 99 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 100 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 101 usbd_pipe_handle pipeh; 102 struct clist q; 103 struct selinfo rsel; 104 u_char *ibuf; /* start of buffer (circular for isoc) */ 105 u_char *fill; /* location for input (isoc) */ 106 u_char *limit; /* end of circular buffer (isoc) */ 107 u_char *cur; /* current read location (isoc) */ 108 u_int32_t timeout; 109 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 110 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 111 u_int32_t ra_wb_used; /* how much is in buffer */ 112 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 113 usbd_xfer_handle ra_wb_xfer; 114 struct isoreq { 115 struct ugen_endpoint *sce; 116 usbd_xfer_handle xfer; 117 void *dmabuf; 118 u_int16_t sizes[UGEN_NISORFRMS]; 119 } isoreqs[UGEN_NISOREQS]; 120 }; 121 122 struct ugen_softc { 123 device_t sc_dev; /* base device */ 124 usbd_device_handle sc_udev; 125 126 char sc_is_open[USB_MAX_ENDPOINTS]; 127 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 128 #define OUT 0 129 #define IN 1 130 131 int sc_refcnt; 132 char sc_buffer[UGEN_BBSIZE]; 133 u_char sc_dying; 134 }; 135 136 #if defined(__NetBSD__) 137 dev_type_open(ugenopen); 138 dev_type_close(ugenclose); 139 dev_type_read(ugenread); 140 dev_type_write(ugenwrite); 141 dev_type_ioctl(ugenioctl); 142 dev_type_poll(ugenpoll); 143 dev_type_kqfilter(ugenkqfilter); 144 145 const struct cdevsw ugen_cdevsw = { 146 ugenopen, ugenclose, ugenread, ugenwrite, ugenioctl, 147 nostop, notty, ugenpoll, nommap, ugenkqfilter, D_OTHER, 148 }; 149 #elif defined(__OpenBSD__) 150 cdev_decl(ugen); 151 #elif defined(__FreeBSD__) 152 d_open_t ugenopen; 153 d_close_t ugenclose; 154 d_read_t ugenread; 155 d_write_t ugenwrite; 156 d_ioctl_t ugenioctl; 157 d_poll_t ugenpoll; 158 159 #define UGEN_CDEV_MAJOR 114 160 161 Static struct cdevsw ugen_cdevsw = { 162 /* open */ ugenopen, 163 /* close */ ugenclose, 164 /* read */ ugenread, 165 /* write */ ugenwrite, 166 /* ioctl */ ugenioctl, 167 /* poll */ ugenpoll, 168 /* mmap */ nommap, 169 /* strategy */ nostrategy, 170 /* name */ "ugen", 171 /* maj */ UGEN_CDEV_MAJOR, 172 /* dump */ nodump, 173 /* psize */ nopsize, 174 /* flags */ 0, 175 /* bmaj */ -1 176 }; 177 #endif 178 179 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 180 usbd_status status); 181 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 182 usbd_status status); 183 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 184 usbd_status status); 185 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 186 usbd_status status); 187 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 188 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 189 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 190 void *, int, struct lwp *); 191 Static int ugen_set_config(struct ugen_softc *sc, int configno); 192 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 193 int index, int *lenp); 194 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 195 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 196 197 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 198 #define UGENENDPOINT(n) (minor(n) & 0xf) 199 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 200 201 int ugen_match(device_t, cfdata_t, void *); 202 void ugen_attach(device_t, device_t, void *); 203 int ugen_detach(device_t, int); 204 int ugen_activate(device_t, enum devact); 205 extern struct cfdriver ugen_cd; 206 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, ugen_attach, ugen_detach, ugen_activate); 207 208 /* toggle to control attach priority. -1 means "let autoconf decide" */ 209 int ugen_override = -1; 210 211 int 212 ugen_match(device_t parent, cfdata_t match, void *aux) 213 { 214 struct usb_attach_arg *uaa = aux; 215 int override; 216 217 if (ugen_override != -1) 218 override = ugen_override; 219 else 220 override = match->cf_flags & 1; 221 222 if (override) 223 return (UMATCH_HIGHEST); 224 else if (uaa->usegeneric) 225 return (UMATCH_GENERIC); 226 else 227 return (UMATCH_NONE); 228 } 229 230 void 231 ugen_attach(device_t parent, device_t self, void *aux) 232 { 233 struct ugen_softc *sc = device_private(self); 234 struct usb_attach_arg *uaa = aux; 235 usbd_device_handle udev; 236 char *devinfop; 237 usbd_status err; 238 int i, dir, conf; 239 240 aprint_naive("\n"); 241 aprint_normal("\n"); 242 243 devinfop = usbd_devinfo_alloc(uaa->device, 0); 244 aprint_normal_dev(self, "%s\n", devinfop); 245 usbd_devinfo_free(devinfop); 246 247 sc->sc_dev = self; 248 sc->sc_udev = udev = uaa->device; 249 250 /* First set configuration index 0, the default one for ugen. */ 251 err = usbd_set_config_index(udev, 0, 0); 252 if (err) { 253 aprint_error_dev(self, 254 "setting configuration index 0 failed\n"); 255 sc->sc_dying = 1; 256 return; 257 } 258 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 259 260 /* Set up all the local state for this configuration. */ 261 err = ugen_set_config(sc, conf); 262 if (err) { 263 aprint_error_dev(self, "setting configuration %d failed\n", 264 conf); 265 sc->sc_dying = 1; 266 return; 267 } 268 269 #ifdef __FreeBSD__ 270 { 271 static int global_init_done = 0; 272 if (!global_init_done) { 273 cdevsw_add(&ugen_cdevsw); 274 global_init_done = 1; 275 } 276 } 277 #endif 278 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 279 for (dir = OUT; dir <= IN; dir++) { 280 struct ugen_endpoint *sce; 281 282 sce = &sc->sc_endpoints[i][dir]; 283 selinit(&sce->rsel); 284 } 285 } 286 287 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 288 sc->sc_dev); 289 290 if (!pmf_device_register(self, NULL, NULL)) 291 aprint_error_dev(self, "couldn't establish power handler\n"); 292 293 return; 294 } 295 296 Static int 297 ugen_set_config(struct ugen_softc *sc, int configno) 298 { 299 usbd_device_handle dev = sc->sc_udev; 300 usb_config_descriptor_t *cdesc; 301 usbd_interface_handle iface; 302 usb_endpoint_descriptor_t *ed; 303 struct ugen_endpoint *sce; 304 u_int8_t niface, nendpt; 305 int ifaceno, endptno, endpt; 306 usbd_status err; 307 int dir; 308 309 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 310 device_xname(sc->sc_dev), configno, sc)); 311 312 /* 313 * We start at 1, not 0, because we don't care whether the 314 * control endpoint is open or not. It is always present. 315 */ 316 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 317 if (sc->sc_is_open[endptno]) { 318 DPRINTFN(1, 319 ("ugen_set_config: %s - endpoint %d is open\n", 320 device_xname(sc->sc_dev), endptno)); 321 return (USBD_IN_USE); 322 } 323 324 /* Avoid setting the current value. */ 325 cdesc = usbd_get_config_descriptor(dev); 326 if (!cdesc || cdesc->bConfigurationValue != configno) { 327 err = usbd_set_config_no(dev, configno, 1); 328 if (err) 329 return (err); 330 } 331 332 err = usbd_interface_count(dev, &niface); 333 if (err) 334 return (err); 335 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 336 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 337 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 338 err = usbd_device2interface_handle(dev, ifaceno, &iface); 339 if (err) 340 return (err); 341 err = usbd_endpoint_count(iface, &nendpt); 342 if (err) 343 return (err); 344 for (endptno = 0; endptno < nendpt; endptno++) { 345 ed = usbd_interface2endpoint_descriptor(iface,endptno); 346 KASSERT(ed != NULL); 347 endpt = ed->bEndpointAddress; 348 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 349 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 350 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 351 "(%d,%d), sce=%p\n", 352 endptno, endpt, UE_GET_ADDR(endpt), 353 UE_GET_DIR(endpt), sce)); 354 sce->sc = sc; 355 sce->edesc = ed; 356 sce->iface = iface; 357 } 358 } 359 return (USBD_NORMAL_COMPLETION); 360 } 361 362 int 363 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 364 { 365 struct ugen_softc *sc; 366 int unit = UGENUNIT(dev); 367 int endpt = UGENENDPOINT(dev); 368 usb_endpoint_descriptor_t *edesc; 369 struct ugen_endpoint *sce; 370 int dir, isize; 371 usbd_status err; 372 usbd_xfer_handle xfer; 373 void *tbuf; 374 int i, j; 375 376 sc = device_lookup_private(&ugen_cd, unit); 377 if (sc == NULL) 378 return ENXIO; 379 380 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 381 flag, mode, unit, endpt)); 382 383 if (sc == NULL || sc->sc_dying) 384 return (ENXIO); 385 386 /* The control endpoint allows multiple opens. */ 387 if (endpt == USB_CONTROL_ENDPOINT) { 388 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 389 return (0); 390 } 391 392 if (sc->sc_is_open[endpt]) 393 return (EBUSY); 394 395 /* Make sure there are pipes for all directions. */ 396 for (dir = OUT; dir <= IN; dir++) { 397 if (flag & (dir == OUT ? FWRITE : FREAD)) { 398 sce = &sc->sc_endpoints[endpt][dir]; 399 if (sce == 0 || sce->edesc == 0) 400 return (ENXIO); 401 } 402 } 403 404 /* Actually open the pipes. */ 405 /* XXX Should back out properly if it fails. */ 406 for (dir = OUT; dir <= IN; dir++) { 407 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 408 continue; 409 sce = &sc->sc_endpoints[endpt][dir]; 410 sce->state = 0; 411 sce->timeout = USBD_NO_TIMEOUT; 412 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 413 sc, endpt, dir, sce)); 414 edesc = sce->edesc; 415 switch (edesc->bmAttributes & UE_XFERTYPE) { 416 case UE_INTERRUPT: 417 if (dir == OUT) { 418 err = usbd_open_pipe(sce->iface, 419 edesc->bEndpointAddress, 0, &sce->pipeh); 420 if (err) 421 return (EIO); 422 break; 423 } 424 isize = UGETW(edesc->wMaxPacketSize); 425 if (isize == 0) /* shouldn't happen */ 426 return (EINVAL); 427 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 428 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 429 endpt, isize)); 430 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 431 return (ENOMEM); 432 err = usbd_open_pipe_intr(sce->iface, 433 edesc->bEndpointAddress, 434 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 435 sce->ibuf, isize, ugenintr, 436 USBD_DEFAULT_INTERVAL); 437 if (err) { 438 free(sce->ibuf, M_USBDEV); 439 clfree(&sce->q); 440 return (EIO); 441 } 442 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 443 break; 444 case UE_BULK: 445 err = usbd_open_pipe(sce->iface, 446 edesc->bEndpointAddress, 0, &sce->pipeh); 447 if (err) 448 return (EIO); 449 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 450 /* 451 * Use request size for non-RA/WB transfers 452 * as the default. 453 */ 454 sce->ra_wb_reqsize = UGEN_BBSIZE; 455 break; 456 case UE_ISOCHRONOUS: 457 if (dir == OUT) 458 return (EINVAL); 459 isize = UGETW(edesc->wMaxPacketSize); 460 if (isize == 0) /* shouldn't happen */ 461 return (EINVAL); 462 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 463 M_USBDEV, M_WAITOK); 464 sce->cur = sce->fill = sce->ibuf; 465 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 466 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 467 endpt, isize)); 468 err = usbd_open_pipe(sce->iface, 469 edesc->bEndpointAddress, 0, &sce->pipeh); 470 if (err) { 471 free(sce->ibuf, M_USBDEV); 472 return (EIO); 473 } 474 for(i = 0; i < UGEN_NISOREQS; ++i) { 475 sce->isoreqs[i].sce = sce; 476 xfer = usbd_alloc_xfer(sc->sc_udev); 477 if (xfer == 0) 478 goto bad; 479 sce->isoreqs[i].xfer = xfer; 480 tbuf = usbd_alloc_buffer 481 (xfer, isize * UGEN_NISORFRMS); 482 if (tbuf == 0) { 483 i++; 484 goto bad; 485 } 486 sce->isoreqs[i].dmabuf = tbuf; 487 for(j = 0; j < UGEN_NISORFRMS; ++j) 488 sce->isoreqs[i].sizes[j] = isize; 489 usbd_setup_isoc_xfer 490 (xfer, sce->pipeh, &sce->isoreqs[i], 491 sce->isoreqs[i].sizes, 492 UGEN_NISORFRMS, USBD_NO_COPY, 493 ugen_isoc_rintr); 494 (void)usbd_transfer(xfer); 495 } 496 DPRINTFN(5, ("ugenopen: isoc open done\n")); 497 break; 498 bad: 499 while (--i >= 0) /* implicit buffer free */ 500 usbd_free_xfer(sce->isoreqs[i].xfer); 501 return (ENOMEM); 502 case UE_CONTROL: 503 sce->timeout = USBD_DEFAULT_TIMEOUT; 504 return (EINVAL); 505 } 506 } 507 sc->sc_is_open[endpt] = 1; 508 return (0); 509 } 510 511 int 512 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 513 { 514 int endpt = UGENENDPOINT(dev); 515 struct ugen_softc *sc; 516 struct ugen_endpoint *sce; 517 int dir; 518 int i; 519 520 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 521 if (sc == NULL) 522 return ENXIO; 523 524 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 525 flag, mode, UGENUNIT(dev), endpt)); 526 527 #ifdef DIAGNOSTIC 528 if (!sc->sc_is_open[endpt]) { 529 printf("ugenclose: not open\n"); 530 return (EINVAL); 531 } 532 #endif 533 534 if (endpt == USB_CONTROL_ENDPOINT) { 535 DPRINTFN(5, ("ugenclose: close control\n")); 536 sc->sc_is_open[endpt] = 0; 537 return (0); 538 } 539 540 for (dir = OUT; dir <= IN; dir++) { 541 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 542 continue; 543 sce = &sc->sc_endpoints[endpt][dir]; 544 if (sce == NULL || sce->pipeh == NULL) 545 continue; 546 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 547 endpt, dir, sce)); 548 549 usbd_abort_pipe(sce->pipeh); 550 usbd_close_pipe(sce->pipeh); 551 sce->pipeh = NULL; 552 553 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 554 case UE_INTERRUPT: 555 ndflush(&sce->q, sce->q.c_cc); 556 clfree(&sce->q); 557 break; 558 case UE_ISOCHRONOUS: 559 for (i = 0; i < UGEN_NISOREQS; ++i) 560 usbd_free_xfer(sce->isoreqs[i].xfer); 561 break; 562 case UE_BULK: 563 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 564 /* ibuf freed below */ 565 usbd_free_xfer(sce->ra_wb_xfer); 566 break; 567 default: 568 break; 569 } 570 571 if (sce->ibuf != NULL) { 572 free(sce->ibuf, M_USBDEV); 573 sce->ibuf = NULL; 574 clfree(&sce->q); 575 } 576 } 577 sc->sc_is_open[endpt] = 0; 578 579 return (0); 580 } 581 582 Static int 583 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 584 { 585 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 586 u_int32_t n, tn; 587 usbd_xfer_handle xfer; 588 usbd_status err; 589 int s; 590 int error = 0; 591 592 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 593 594 if (sc->sc_dying) 595 return (EIO); 596 597 if (endpt == USB_CONTROL_ENDPOINT) 598 return (ENODEV); 599 600 #ifdef DIAGNOSTIC 601 if (sce->edesc == NULL) { 602 printf("ugenread: no edesc\n"); 603 return (EIO); 604 } 605 if (sce->pipeh == NULL) { 606 printf("ugenread: no pipe\n"); 607 return (EIO); 608 } 609 #endif 610 611 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 612 case UE_INTERRUPT: 613 /* Block until activity occurred. */ 614 s = splusb(); 615 while (sce->q.c_cc == 0) { 616 if (flag & IO_NDELAY) { 617 splx(s); 618 return (EWOULDBLOCK); 619 } 620 sce->state |= UGEN_ASLP; 621 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 622 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 623 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 624 if (sc->sc_dying) 625 error = EIO; 626 if (error) { 627 sce->state &= ~UGEN_ASLP; 628 break; 629 } 630 } 631 splx(s); 632 633 /* Transfer as many chunks as possible. */ 634 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 635 n = min(sce->q.c_cc, uio->uio_resid); 636 if (n > sizeof(sc->sc_buffer)) 637 n = sizeof(sc->sc_buffer); 638 639 /* Remove a small chunk from the input queue. */ 640 q_to_b(&sce->q, sc->sc_buffer, n); 641 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 642 643 /* Copy the data to the user process. */ 644 error = uiomove(sc->sc_buffer, n, uio); 645 if (error) 646 break; 647 } 648 break; 649 case UE_BULK: 650 if (sce->state & UGEN_BULK_RA) { 651 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 652 uio->uio_resid, sce->ra_wb_used)); 653 xfer = sce->ra_wb_xfer; 654 655 s = splusb(); 656 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 657 splx(s); 658 return (EWOULDBLOCK); 659 } 660 while (uio->uio_resid > 0 && !error) { 661 while (sce->ra_wb_used == 0) { 662 sce->state |= UGEN_ASLP; 663 DPRINTFN(5, 664 ("ugenread: sleep on %p\n", 665 sce)); 666 error = tsleep(sce, PZERO | PCATCH, 667 "ugenrb", 0); 668 DPRINTFN(5, 669 ("ugenread: woke, error=%d\n", 670 error)); 671 if (sc->sc_dying) 672 error = EIO; 673 if (error) { 674 sce->state &= ~UGEN_ASLP; 675 break; 676 } 677 } 678 679 /* Copy data to the process. */ 680 while (uio->uio_resid > 0 681 && sce->ra_wb_used > 0) { 682 n = min(uio->uio_resid, 683 sce->ra_wb_used); 684 n = min(n, sce->limit - sce->cur); 685 error = uiomove(sce->cur, n, uio); 686 if (error) 687 break; 688 sce->cur += n; 689 sce->ra_wb_used -= n; 690 if (sce->cur == sce->limit) 691 sce->cur = sce->ibuf; 692 } 693 694 /* 695 * If the transfers stopped because the 696 * buffer was full, restart them. 697 */ 698 if (sce->state & UGEN_RA_WB_STOP && 699 sce->ra_wb_used < sce->limit - sce->ibuf) { 700 n = (sce->limit - sce->ibuf) 701 - sce->ra_wb_used; 702 usbd_setup_xfer(xfer, 703 sce->pipeh, sce, NULL, 704 min(n, sce->ra_wb_xferlen), 705 USBD_NO_COPY, USBD_NO_TIMEOUT, 706 ugen_bulkra_intr); 707 sce->state &= ~UGEN_RA_WB_STOP; 708 err = usbd_transfer(xfer); 709 if (err != USBD_IN_PROGRESS) 710 /* 711 * The transfer has not been 712 * queued. Setting STOP 713 * will make us try 714 * again at the next read. 715 */ 716 sce->state |= UGEN_RA_WB_STOP; 717 } 718 } 719 splx(s); 720 break; 721 } 722 xfer = usbd_alloc_xfer(sc->sc_udev); 723 if (xfer == 0) 724 return (ENOMEM); 725 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 726 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 727 tn = n; 728 err = usbd_bulk_transfer( 729 xfer, sce->pipeh, 730 sce->state & UGEN_SHORT_OK ? 731 USBD_SHORT_XFER_OK : 0, 732 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 733 if (err) { 734 if (err == USBD_INTERRUPTED) 735 error = EINTR; 736 else if (err == USBD_TIMEOUT) 737 error = ETIMEDOUT; 738 else 739 error = EIO; 740 break; 741 } 742 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 743 error = uiomove(sc->sc_buffer, tn, uio); 744 if (error || tn < n) 745 break; 746 } 747 usbd_free_xfer(xfer); 748 break; 749 case UE_ISOCHRONOUS: 750 s = splusb(); 751 while (sce->cur == sce->fill) { 752 if (flag & IO_NDELAY) { 753 splx(s); 754 return (EWOULDBLOCK); 755 } 756 sce->state |= UGEN_ASLP; 757 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 758 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 759 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 760 if (sc->sc_dying) 761 error = EIO; 762 if (error) { 763 sce->state &= ~UGEN_ASLP; 764 break; 765 } 766 } 767 768 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 769 if(sce->fill > sce->cur) 770 n = min(sce->fill - sce->cur, uio->uio_resid); 771 else 772 n = min(sce->limit - sce->cur, uio->uio_resid); 773 774 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 775 776 /* Copy the data to the user process. */ 777 error = uiomove(sce->cur, n, uio); 778 if (error) 779 break; 780 sce->cur += n; 781 if(sce->cur >= sce->limit) 782 sce->cur = sce->ibuf; 783 } 784 splx(s); 785 break; 786 787 788 default: 789 return (ENXIO); 790 } 791 return (error); 792 } 793 794 int 795 ugenread(dev_t dev, struct uio *uio, int flag) 796 { 797 int endpt = UGENENDPOINT(dev); 798 struct ugen_softc *sc; 799 int error; 800 801 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 802 if (sc == NULL) 803 return ENXIO; 804 805 sc->sc_refcnt++; 806 error = ugen_do_read(sc, endpt, uio, flag); 807 if (--sc->sc_refcnt < 0) 808 usb_detach_wakeup(sc->sc_dev); 809 return (error); 810 } 811 812 Static int 813 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 814 int flag) 815 { 816 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 817 u_int32_t n; 818 int error = 0; 819 int s; 820 u_int32_t tn; 821 char *dbuf; 822 usbd_xfer_handle xfer; 823 usbd_status err; 824 825 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 826 827 if (sc->sc_dying) 828 return (EIO); 829 830 if (endpt == USB_CONTROL_ENDPOINT) 831 return (ENODEV); 832 833 #ifdef DIAGNOSTIC 834 if (sce->edesc == NULL) { 835 printf("ugenwrite: no edesc\n"); 836 return (EIO); 837 } 838 if (sce->pipeh == NULL) { 839 printf("ugenwrite: no pipe\n"); 840 return (EIO); 841 } 842 #endif 843 844 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 845 case UE_BULK: 846 if (sce->state & UGEN_BULK_WB) { 847 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 848 uio->uio_resid, sce->ra_wb_used)); 849 xfer = sce->ra_wb_xfer; 850 851 s = splusb(); 852 if (sce->ra_wb_used == sce->limit - sce->ibuf && 853 flag & IO_NDELAY) { 854 splx(s); 855 return (EWOULDBLOCK); 856 } 857 while (uio->uio_resid > 0 && !error) { 858 while (sce->ra_wb_used == 859 sce->limit - sce->ibuf) { 860 sce->state |= UGEN_ASLP; 861 DPRINTFN(5, 862 ("ugenwrite: sleep on %p\n", 863 sce)); 864 error = tsleep(sce, PZERO | PCATCH, 865 "ugenwb", 0); 866 DPRINTFN(5, 867 ("ugenwrite: woke, error=%d\n", 868 error)); 869 if (sc->sc_dying) 870 error = EIO; 871 if (error) { 872 sce->state &= ~UGEN_ASLP; 873 break; 874 } 875 } 876 877 /* Copy data from the process. */ 878 while (uio->uio_resid > 0 && 879 sce->ra_wb_used < sce->limit - sce->ibuf) { 880 n = min(uio->uio_resid, 881 (sce->limit - sce->ibuf) 882 - sce->ra_wb_used); 883 n = min(n, sce->limit - sce->fill); 884 error = uiomove(sce->fill, n, uio); 885 if (error) 886 break; 887 sce->fill += n; 888 sce->ra_wb_used += n; 889 if (sce->fill == sce->limit) 890 sce->fill = sce->ibuf; 891 } 892 893 /* 894 * If the transfers stopped because the 895 * buffer was empty, restart them. 896 */ 897 if (sce->state & UGEN_RA_WB_STOP && 898 sce->ra_wb_used > 0) { 899 dbuf = (char *)usbd_get_buffer(xfer); 900 n = min(sce->ra_wb_used, 901 sce->ra_wb_xferlen); 902 tn = min(n, sce->limit - sce->cur); 903 memcpy(dbuf, sce->cur, tn); 904 dbuf += tn; 905 if (n - tn > 0) 906 memcpy(dbuf, sce->ibuf, 907 n - tn); 908 usbd_setup_xfer(xfer, 909 sce->pipeh, sce, NULL, n, 910 USBD_NO_COPY, USBD_NO_TIMEOUT, 911 ugen_bulkwb_intr); 912 sce->state &= ~UGEN_RA_WB_STOP; 913 err = usbd_transfer(xfer); 914 if (err != USBD_IN_PROGRESS) 915 /* 916 * The transfer has not been 917 * queued. Setting STOP 918 * will make us try again 919 * at the next read. 920 */ 921 sce->state |= UGEN_RA_WB_STOP; 922 } 923 } 924 splx(s); 925 break; 926 } 927 xfer = usbd_alloc_xfer(sc->sc_udev); 928 if (xfer == 0) 929 return (EIO); 930 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 931 error = uiomove(sc->sc_buffer, n, uio); 932 if (error) 933 break; 934 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 935 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 936 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 937 if (err) { 938 if (err == USBD_INTERRUPTED) 939 error = EINTR; 940 else if (err == USBD_TIMEOUT) 941 error = ETIMEDOUT; 942 else 943 error = EIO; 944 break; 945 } 946 } 947 usbd_free_xfer(xfer); 948 break; 949 case UE_INTERRUPT: 950 xfer = usbd_alloc_xfer(sc->sc_udev); 951 if (xfer == 0) 952 return (EIO); 953 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 954 uio->uio_resid)) != 0) { 955 error = uiomove(sc->sc_buffer, n, uio); 956 if (error) 957 break; 958 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 959 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 960 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 961 if (err) { 962 if (err == USBD_INTERRUPTED) 963 error = EINTR; 964 else if (err == USBD_TIMEOUT) 965 error = ETIMEDOUT; 966 else 967 error = EIO; 968 break; 969 } 970 } 971 usbd_free_xfer(xfer); 972 break; 973 default: 974 return (ENXIO); 975 } 976 return (error); 977 } 978 979 int 980 ugenwrite(dev_t dev, struct uio *uio, int flag) 981 { 982 int endpt = UGENENDPOINT(dev); 983 struct ugen_softc *sc; 984 int error; 985 986 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 987 if (sc == NULL) 988 return ENXIO; 989 990 sc->sc_refcnt++; 991 error = ugen_do_write(sc, endpt, uio, flag); 992 if (--sc->sc_refcnt < 0) 993 usb_detach_wakeup(sc->sc_dev); 994 return (error); 995 } 996 997 #if defined(__NetBSD__) || defined(__OpenBSD__) 998 int 999 ugen_activate(device_t self, enum devact act) 1000 { 1001 struct ugen_softc *sc = device_private(self); 1002 1003 switch (act) { 1004 case DVACT_DEACTIVATE: 1005 sc->sc_dying = 1; 1006 return 0; 1007 default: 1008 return EOPNOTSUPP; 1009 } 1010 } 1011 #endif 1012 1013 int 1014 ugen_detach(device_t self, int flags) 1015 { 1016 struct ugen_softc *sc = device_private(self); 1017 struct ugen_endpoint *sce; 1018 int i, dir; 1019 int s; 1020 #if defined(__NetBSD__) || defined(__OpenBSD__) 1021 int maj, mn; 1022 1023 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1024 #elif defined(__FreeBSD__) 1025 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1026 #endif 1027 1028 sc->sc_dying = 1; 1029 pmf_device_deregister(self); 1030 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1031 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1032 for (dir = OUT; dir <= IN; dir++) { 1033 sce = &sc->sc_endpoints[i][dir]; 1034 if (sce && sce->pipeh) 1035 usbd_abort_pipe(sce->pipeh); 1036 } 1037 } 1038 1039 s = splusb(); 1040 if (--sc->sc_refcnt >= 0) { 1041 /* Wake everyone */ 1042 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1043 wakeup(&sc->sc_endpoints[i][IN]); 1044 /* Wait for processes to go away. */ 1045 usb_detach_wait(sc->sc_dev); 1046 } 1047 splx(s); 1048 1049 #if defined(__NetBSD__) || defined(__OpenBSD__) 1050 /* locate the major number */ 1051 #if defined(__NetBSD__) 1052 maj = cdevsw_lookup_major(&ugen_cdevsw); 1053 #elif defined(__OpenBSD__) 1054 for (maj = 0; maj < nchrdev; maj++) 1055 if (cdevsw[maj].d_open == ugenopen) 1056 break; 1057 #endif 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 #elif defined(__FreeBSD__) 1063 /* XXX not implemented yet */ 1064 #endif 1065 1066 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1067 sc->sc_dev); 1068 1069 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1070 for (dir = OUT; dir <= IN; dir++) { 1071 sce = &sc->sc_endpoints[i][dir]; 1072 seldestroy(&sce->rsel); 1073 } 1074 } 1075 1076 return (0); 1077 } 1078 1079 Static void 1080 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1081 { 1082 struct ugen_endpoint *sce = addr; 1083 /*struct ugen_softc *sc = sce->sc;*/ 1084 u_int32_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 (void)b_to_q(ibuf, count, &sce->q); 1106 1107 if (sce->state & UGEN_ASLP) { 1108 sce->state &= ~UGEN_ASLP; 1109 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1110 wakeup(sce); 1111 } 1112 selnotify(&sce->rsel, 0, 0); 1113 } 1114 1115 Static void 1116 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1117 usbd_status status) 1118 { 1119 struct isoreq *req = addr; 1120 struct ugen_endpoint *sce = req->sce; 1121 u_int32_t count, n; 1122 int i, isize; 1123 1124 /* Return if we are aborting. */ 1125 if (status == USBD_CANCELLED) 1126 return; 1127 1128 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1129 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1130 (long)(req - sce->isoreqs), count)); 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 u_int32_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 = min(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, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1163 USBD_NO_COPY, ugen_isoc_rintr); 1164 (void)usbd_transfer(xfer); 1165 1166 if (sce->state & UGEN_ASLP) { 1167 sce->state &= ~UGEN_ASLP; 1168 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1169 wakeup(sce); 1170 } 1171 selnotify(&sce->rsel, 0, 0); 1172 } 1173 1174 Static void 1175 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1176 usbd_status status) 1177 { 1178 struct ugen_endpoint *sce = addr; 1179 u_int32_t count, n; 1180 char const *tbuf; 1181 usbd_status err; 1182 1183 /* Return if we are aborting. */ 1184 if (status == USBD_CANCELLED) 1185 return; 1186 1187 if (status != USBD_NORMAL_COMPLETION) { 1188 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1189 sce->state |= UGEN_RA_WB_STOP; 1190 if (status == USBD_STALLED) 1191 usbd_clear_endpoint_stall_async(sce->pipeh); 1192 return; 1193 } 1194 1195 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 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 = min(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->pipeh, sce, NULL, 1218 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1219 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1220 err = usbd_transfer(xfer); 1221 if (err != USBD_IN_PROGRESS) { 1222 printf("usbd_bulkra_intr: error=%d\n", err); 1223 /* 1224 * The transfer has not been queued. Setting STOP 1225 * will make us try again at the next read. 1226 */ 1227 sce->state |= UGEN_RA_WB_STOP; 1228 } 1229 } 1230 else 1231 sce->state |= UGEN_RA_WB_STOP; 1232 1233 if (sce->state & UGEN_ASLP) { 1234 sce->state &= ~UGEN_ASLP; 1235 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1236 wakeup(sce); 1237 } 1238 selnotify(&sce->rsel, 0, 0); 1239 } 1240 1241 Static void 1242 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1243 usbd_status status) 1244 { 1245 struct ugen_endpoint *sce = addr; 1246 u_int32_t count, n; 1247 char *tbuf; 1248 usbd_status err; 1249 1250 /* Return if we are aborting. */ 1251 if (status == USBD_CANCELLED) 1252 return; 1253 1254 if (status != USBD_NORMAL_COMPLETION) { 1255 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1256 sce->state |= UGEN_RA_WB_STOP; 1257 if (status == USBD_STALLED) 1258 usbd_clear_endpoint_stall_async(sce->pipeh); 1259 return; 1260 } 1261 1262 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1263 1264 /* Keep track of how much is in the buffer. */ 1265 sce->ra_wb_used -= count; 1266 1267 /* Update buffer pointers. */ 1268 sce->cur += count; 1269 if (sce->cur >= sce->limit) 1270 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1271 1272 /* Set up next request if necessary. */ 1273 if (sce->ra_wb_used > 0) { 1274 /* copy data from buffer */ 1275 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1276 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1277 n = min(count, sce->limit - sce->cur); 1278 memcpy(tbuf, sce->cur, n); 1279 tbuf += n; 1280 if (count - n > 0) 1281 memcpy(tbuf, sce->ibuf, count - n); 1282 1283 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1284 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1285 err = usbd_transfer(xfer); 1286 if (err != USBD_IN_PROGRESS) { 1287 printf("usbd_bulkwb_intr: error=%d\n", err); 1288 /* 1289 * The transfer has not been queued. Setting STOP 1290 * will make us try again at the next write. 1291 */ 1292 sce->state |= UGEN_RA_WB_STOP; 1293 } 1294 } 1295 else 1296 sce->state |= UGEN_RA_WB_STOP; 1297 1298 if (sce->state & UGEN_ASLP) { 1299 sce->state &= ~UGEN_ASLP; 1300 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1301 wakeup(sce); 1302 } 1303 selnotify(&sce->rsel, 0, 0); 1304 } 1305 1306 Static usbd_status 1307 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1308 { 1309 usbd_interface_handle iface; 1310 usb_endpoint_descriptor_t *ed; 1311 usbd_status err; 1312 struct ugen_endpoint *sce; 1313 u_int8_t niface, nendpt, endptno, endpt; 1314 int dir; 1315 1316 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1317 1318 err = usbd_interface_count(sc->sc_udev, &niface); 1319 if (err) 1320 return (err); 1321 if (ifaceidx < 0 || ifaceidx >= niface) 1322 return (USBD_INVAL); 1323 1324 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1325 if (err) 1326 return (err); 1327 err = usbd_endpoint_count(iface, &nendpt); 1328 if (err) 1329 return (err); 1330 /* XXX should only do this after setting new altno has succeeded */ 1331 for (endptno = 0; endptno < nendpt; endptno++) { 1332 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1333 endpt = ed->bEndpointAddress; 1334 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1335 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1336 sce->sc = 0; 1337 sce->edesc = 0; 1338 sce->iface = 0; 1339 } 1340 1341 /* change setting */ 1342 err = usbd_set_interface(iface, altno); 1343 if (err) 1344 return (err); 1345 1346 err = usbd_endpoint_count(iface, &nendpt); 1347 if (err) 1348 return (err); 1349 for (endptno = 0; endptno < nendpt; endptno++) { 1350 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1351 KASSERT(ed != NULL); 1352 endpt = ed->bEndpointAddress; 1353 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1354 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1355 sce->sc = sc; 1356 sce->edesc = ed; 1357 sce->iface = iface; 1358 } 1359 return (0); 1360 } 1361 1362 /* Retrieve a complete descriptor for a certain device and index. */ 1363 Static usb_config_descriptor_t * 1364 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1365 { 1366 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1367 int len; 1368 usbd_status err; 1369 1370 if (index == USB_CURRENT_CONFIG_INDEX) { 1371 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1372 len = UGETW(tdesc->wTotalLength); 1373 if (lenp) 1374 *lenp = len; 1375 cdesc = malloc(len, M_TEMP, M_WAITOK); 1376 memcpy(cdesc, tdesc, len); 1377 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1378 } else { 1379 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1380 if (err) 1381 return (0); 1382 len = UGETW(cdescr.wTotalLength); 1383 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1384 if (lenp) 1385 *lenp = len; 1386 cdesc = malloc(len, M_TEMP, M_WAITOK); 1387 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1388 if (err) { 1389 free(cdesc, M_TEMP); 1390 return (0); 1391 } 1392 } 1393 return (cdesc); 1394 } 1395 1396 Static int 1397 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1398 { 1399 usbd_interface_handle iface; 1400 usbd_status err; 1401 1402 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1403 if (err) 1404 return (-1); 1405 return (usbd_get_interface_altindex(iface)); 1406 } 1407 1408 Static int 1409 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1410 void *addr, int flag, struct lwp *l) 1411 { 1412 struct ugen_endpoint *sce; 1413 usbd_status err; 1414 usbd_interface_handle iface; 1415 struct usb_config_desc *cd; 1416 usb_config_descriptor_t *cdesc; 1417 struct usb_interface_desc *id; 1418 usb_interface_descriptor_t *idesc; 1419 struct usb_endpoint_desc *ed; 1420 usb_endpoint_descriptor_t *edesc; 1421 struct usb_alt_interface *ai; 1422 struct usb_string_desc *si; 1423 u_int8_t conf, alt; 1424 1425 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1426 if (sc->sc_dying) 1427 return (EIO); 1428 1429 switch (cmd) { 1430 case FIONBIO: 1431 /* All handled in the upper FS layer. */ 1432 return (0); 1433 case USB_SET_SHORT_XFER: 1434 if (endpt == USB_CONTROL_ENDPOINT) 1435 return (EINVAL); 1436 /* This flag only affects read */ 1437 sce = &sc->sc_endpoints[endpt][IN]; 1438 if (sce == NULL || sce->pipeh == NULL) 1439 return (EINVAL); 1440 if (*(int *)addr) 1441 sce->state |= UGEN_SHORT_OK; 1442 else 1443 sce->state &= ~UGEN_SHORT_OK; 1444 return (0); 1445 case USB_SET_TIMEOUT: 1446 sce = &sc->sc_endpoints[endpt][IN]; 1447 if (sce == NULL 1448 /* XXX this shouldn't happen, but the distinction between 1449 input and output pipes isn't clear enough. 1450 || sce->pipeh == NULL */ 1451 ) 1452 return (EINVAL); 1453 sce->timeout = *(int *)addr; 1454 return (0); 1455 case USB_SET_BULK_RA: 1456 if (endpt == USB_CONTROL_ENDPOINT) 1457 return (EINVAL); 1458 sce = &sc->sc_endpoints[endpt][IN]; 1459 if (sce == NULL || sce->pipeh == NULL) 1460 return (EINVAL); 1461 edesc = sce->edesc; 1462 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1463 return (EINVAL); 1464 1465 if (*(int *)addr) { 1466 /* Only turn RA on if it's currently off. */ 1467 if (sce->state & UGEN_BULK_RA) 1468 return (0); 1469 1470 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1471 /* shouldn't happen */ 1472 return (EINVAL); 1473 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1474 if (sce->ra_wb_xfer == NULL) 1475 return (ENOMEM); 1476 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1477 /* 1478 * Set up a dmabuf because we reuse the xfer with 1479 * the same (max) request length like isoc. 1480 */ 1481 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1482 sce->ra_wb_xferlen) == 0) { 1483 usbd_free_xfer(sce->ra_wb_xfer); 1484 return (ENOMEM); 1485 } 1486 sce->ibuf = malloc(sce->ra_wb_bufsize, 1487 M_USBDEV, M_WAITOK); 1488 sce->fill = sce->cur = sce->ibuf; 1489 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1490 sce->ra_wb_used = 0; 1491 sce->state |= UGEN_BULK_RA; 1492 sce->state &= ~UGEN_RA_WB_STOP; 1493 /* Now start reading. */ 1494 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1495 NULL, 1496 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1497 USBD_NO_COPY, USBD_NO_TIMEOUT, 1498 ugen_bulkra_intr); 1499 err = usbd_transfer(sce->ra_wb_xfer); 1500 if (err != USBD_IN_PROGRESS) { 1501 sce->state &= ~UGEN_BULK_RA; 1502 free(sce->ibuf, M_USBDEV); 1503 sce->ibuf = NULL; 1504 usbd_free_xfer(sce->ra_wb_xfer); 1505 return (EIO); 1506 } 1507 } else { 1508 /* Only turn RA off if it's currently on. */ 1509 if (!(sce->state & UGEN_BULK_RA)) 1510 return (0); 1511 1512 sce->state &= ~UGEN_BULK_RA; 1513 usbd_abort_pipe(sce->pipeh); 1514 usbd_free_xfer(sce->ra_wb_xfer); 1515 /* 1516 * XXX Discard whatever's in the buffer, but we 1517 * should keep it around and drain the buffer 1518 * instead. 1519 */ 1520 free(sce->ibuf, M_USBDEV); 1521 sce->ibuf = NULL; 1522 } 1523 return (0); 1524 case USB_SET_BULK_WB: 1525 if (endpt == USB_CONTROL_ENDPOINT) 1526 return (EINVAL); 1527 sce = &sc->sc_endpoints[endpt][OUT]; 1528 if (sce == NULL || sce->pipeh == NULL) 1529 return (EINVAL); 1530 edesc = sce->edesc; 1531 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1532 return (EINVAL); 1533 1534 if (*(int *)addr) { 1535 /* Only turn WB on if it's currently off. */ 1536 if (sce->state & UGEN_BULK_WB) 1537 return (0); 1538 1539 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1540 /* shouldn't happen */ 1541 return (EINVAL); 1542 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1543 if (sce->ra_wb_xfer == NULL) 1544 return (ENOMEM); 1545 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1546 /* 1547 * Set up a dmabuf because we reuse the xfer with 1548 * the same (max) request length like isoc. 1549 */ 1550 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1551 sce->ra_wb_xferlen) == 0) { 1552 usbd_free_xfer(sce->ra_wb_xfer); 1553 return (ENOMEM); 1554 } 1555 sce->ibuf = malloc(sce->ra_wb_bufsize, 1556 M_USBDEV, M_WAITOK); 1557 sce->fill = sce->cur = sce->ibuf; 1558 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1559 sce->ra_wb_used = 0; 1560 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1561 } else { 1562 /* Only turn WB off if it's currently on. */ 1563 if (!(sce->state & UGEN_BULK_WB)) 1564 return (0); 1565 1566 sce->state &= ~UGEN_BULK_WB; 1567 /* 1568 * XXX Discard whatever's in the buffer, but we 1569 * should keep it around and keep writing to 1570 * drain the buffer instead. 1571 */ 1572 usbd_abort_pipe(sce->pipeh); 1573 usbd_free_xfer(sce->ra_wb_xfer); 1574 free(sce->ibuf, M_USBDEV); 1575 sce->ibuf = NULL; 1576 } 1577 return (0); 1578 case USB_SET_BULK_RA_OPT: 1579 case USB_SET_BULK_WB_OPT: 1580 { 1581 struct usb_bulk_ra_wb_opt *opt; 1582 1583 if (endpt == USB_CONTROL_ENDPOINT) 1584 return (EINVAL); 1585 opt = (struct usb_bulk_ra_wb_opt *)addr; 1586 if (cmd == USB_SET_BULK_RA_OPT) 1587 sce = &sc->sc_endpoints[endpt][IN]; 1588 else 1589 sce = &sc->sc_endpoints[endpt][OUT]; 1590 if (sce == NULL || sce->pipeh == NULL) 1591 return (EINVAL); 1592 if (opt->ra_wb_buffer_size < 1 || 1593 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1594 opt->ra_wb_request_size < 1 || 1595 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1596 return (EINVAL); 1597 /* 1598 * XXX These changes do not take effect until the 1599 * next time RA/WB mode is enabled but they ought to 1600 * take effect immediately. 1601 */ 1602 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1603 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1604 return (0); 1605 } 1606 default: 1607 break; 1608 } 1609 1610 if (endpt != USB_CONTROL_ENDPOINT) 1611 return (EINVAL); 1612 1613 switch (cmd) { 1614 #ifdef UGEN_DEBUG 1615 case USB_SETDEBUG: 1616 ugendebug = *(int *)addr; 1617 break; 1618 #endif 1619 case USB_GET_CONFIG: 1620 err = usbd_get_config(sc->sc_udev, &conf); 1621 if (err) 1622 return (EIO); 1623 *(int *)addr = conf; 1624 break; 1625 case USB_SET_CONFIG: 1626 if (!(flag & FWRITE)) 1627 return (EPERM); 1628 err = ugen_set_config(sc, *(int *)addr); 1629 switch (err) { 1630 case USBD_NORMAL_COMPLETION: 1631 break; 1632 case USBD_IN_USE: 1633 return (EBUSY); 1634 default: 1635 return (EIO); 1636 } 1637 break; 1638 case USB_GET_ALTINTERFACE: 1639 ai = (struct usb_alt_interface *)addr; 1640 err = usbd_device2interface_handle(sc->sc_udev, 1641 ai->uai_interface_index, &iface); 1642 if (err) 1643 return (EINVAL); 1644 idesc = usbd_get_interface_descriptor(iface); 1645 if (idesc == NULL) 1646 return (EIO); 1647 ai->uai_alt_no = idesc->bAlternateSetting; 1648 break; 1649 case USB_SET_ALTINTERFACE: 1650 if (!(flag & FWRITE)) 1651 return (EPERM); 1652 ai = (struct usb_alt_interface *)addr; 1653 err = usbd_device2interface_handle(sc->sc_udev, 1654 ai->uai_interface_index, &iface); 1655 if (err) 1656 return (EINVAL); 1657 err = ugen_set_interface(sc, ai->uai_interface_index, 1658 ai->uai_alt_no); 1659 if (err) 1660 return (EINVAL); 1661 break; 1662 case USB_GET_NO_ALT: 1663 ai = (struct usb_alt_interface *)addr; 1664 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1665 if (cdesc == NULL) 1666 return (EINVAL); 1667 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1668 if (idesc == NULL) { 1669 free(cdesc, M_TEMP); 1670 return (EINVAL); 1671 } 1672 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1673 idesc->bInterfaceNumber); 1674 free(cdesc, M_TEMP); 1675 break; 1676 case USB_GET_DEVICE_DESC: 1677 *(usb_device_descriptor_t *)addr = 1678 *usbd_get_device_descriptor(sc->sc_udev); 1679 break; 1680 case USB_GET_CONFIG_DESC: 1681 cd = (struct usb_config_desc *)addr; 1682 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1683 if (cdesc == NULL) 1684 return (EINVAL); 1685 cd->ucd_desc = *cdesc; 1686 free(cdesc, M_TEMP); 1687 break; 1688 case USB_GET_INTERFACE_DESC: 1689 id = (struct usb_interface_desc *)addr; 1690 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1691 if (cdesc == NULL) 1692 return (EINVAL); 1693 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1694 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1695 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1696 else 1697 alt = id->uid_alt_index; 1698 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1699 if (idesc == NULL) { 1700 free(cdesc, M_TEMP); 1701 return (EINVAL); 1702 } 1703 id->uid_desc = *idesc; 1704 free(cdesc, M_TEMP); 1705 break; 1706 case USB_GET_ENDPOINT_DESC: 1707 ed = (struct usb_endpoint_desc *)addr; 1708 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1709 if (cdesc == NULL) 1710 return (EINVAL); 1711 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1712 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1713 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1714 else 1715 alt = ed->ued_alt_index; 1716 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1717 alt, ed->ued_endpoint_index); 1718 if (edesc == NULL) { 1719 free(cdesc, M_TEMP); 1720 return (EINVAL); 1721 } 1722 ed->ued_desc = *edesc; 1723 free(cdesc, M_TEMP); 1724 break; 1725 case USB_GET_FULL_DESC: 1726 { 1727 int len; 1728 struct iovec iov; 1729 struct uio uio; 1730 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1731 int error; 1732 1733 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1734 if (cdesc == NULL) 1735 return (EINVAL); 1736 if (len > fd->ufd_size) 1737 len = fd->ufd_size; 1738 iov.iov_base = (void *)fd->ufd_data; 1739 iov.iov_len = len; 1740 uio.uio_iov = &iov; 1741 uio.uio_iovcnt = 1; 1742 uio.uio_resid = len; 1743 uio.uio_offset = 0; 1744 uio.uio_rw = UIO_READ; 1745 uio.uio_vmspace = l->l_proc->p_vmspace; 1746 error = uiomove((void *)cdesc, len, &uio); 1747 free(cdesc, M_TEMP); 1748 return (error); 1749 } 1750 case USB_GET_STRING_DESC: { 1751 int len; 1752 si = (struct usb_string_desc *)addr; 1753 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1754 si->usd_language_id, &si->usd_desc, &len); 1755 if (err) 1756 return (EINVAL); 1757 break; 1758 } 1759 case USB_DO_REQUEST: 1760 { 1761 struct usb_ctl_request *ur = (void *)addr; 1762 int len = UGETW(ur->ucr_request.wLength); 1763 struct iovec iov; 1764 struct uio uio; 1765 void *ptr = 0; 1766 usbd_status xerr; 1767 int error = 0; 1768 1769 if (!(flag & FWRITE)) 1770 return (EPERM); 1771 /* Avoid requests that would damage the bus integrity. */ 1772 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1773 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1774 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1775 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1776 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1777 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1778 return (EINVAL); 1779 1780 if (len < 0 || len > 32767) 1781 return (EINVAL); 1782 if (len != 0) { 1783 iov.iov_base = (void *)ur->ucr_data; 1784 iov.iov_len = len; 1785 uio.uio_iov = &iov; 1786 uio.uio_iovcnt = 1; 1787 uio.uio_resid = len; 1788 uio.uio_offset = 0; 1789 uio.uio_rw = 1790 ur->ucr_request.bmRequestType & UT_READ ? 1791 UIO_READ : UIO_WRITE; 1792 uio.uio_vmspace = l->l_proc->p_vmspace; 1793 ptr = malloc(len, M_TEMP, M_WAITOK); 1794 if (uio.uio_rw == UIO_WRITE) { 1795 error = uiomove(ptr, len, &uio); 1796 if (error) 1797 goto ret; 1798 } 1799 } 1800 sce = &sc->sc_endpoints[endpt][IN]; 1801 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1802 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1803 if (xerr) { 1804 error = EIO; 1805 goto ret; 1806 } 1807 if (len != 0) { 1808 if (uio.uio_rw == UIO_READ) { 1809 error = uiomove(ptr, len, &uio); 1810 if (error) 1811 goto ret; 1812 } 1813 } 1814 ret: 1815 if (ptr) 1816 free(ptr, M_TEMP); 1817 return (error); 1818 } 1819 case USB_GET_DEVICEINFO: 1820 usbd_fill_deviceinfo(sc->sc_udev, 1821 (struct usb_device_info *)addr, 0); 1822 break; 1823 #ifdef COMPAT_30 1824 case USB_GET_DEVICEINFO_OLD: 1825 usbd_fill_deviceinfo_old(sc->sc_udev, 1826 (struct usb_device_info_old *)addr, 0); 1827 1828 break; 1829 #endif 1830 default: 1831 return (EINVAL); 1832 } 1833 return (0); 1834 } 1835 1836 int 1837 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1838 { 1839 int endpt = UGENENDPOINT(dev); 1840 struct ugen_softc *sc; 1841 int error; 1842 1843 sc = device_lookup_private(& ugen_cd, UGENUNIT(dev)); 1844 if (sc == NULL) 1845 return ENXIO; 1846 1847 sc->sc_refcnt++; 1848 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1849 if (--sc->sc_refcnt < 0) 1850 usb_detach_wakeup(sc->sc_dev); 1851 return (error); 1852 } 1853 1854 int 1855 ugenpoll(dev_t dev, int events, struct lwp *l) 1856 { 1857 struct ugen_softc *sc; 1858 struct ugen_endpoint *sce_in, *sce_out; 1859 int revents = 0; 1860 int s; 1861 1862 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 1863 if (sc == NULL) 1864 return ENXIO; 1865 1866 if (sc->sc_dying) 1867 return (POLLHUP); 1868 1869 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1870 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1871 if (sce_in == NULL && sce_out == NULL) 1872 return (POLLERR); 1873 #ifdef DIAGNOSTIC 1874 if (!sce_in->edesc && !sce_out->edesc) { 1875 printf("ugenpoll: no edesc\n"); 1876 return (POLLERR); 1877 } 1878 /* It's possible to have only one pipe open. */ 1879 if (!sce_in->pipeh && !sce_out->pipeh) { 1880 printf("ugenpoll: no pipe\n"); 1881 return (POLLERR); 1882 } 1883 #endif 1884 s = splusb(); 1885 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1886 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1887 case UE_INTERRUPT: 1888 if (sce_in->q.c_cc > 0) 1889 revents |= events & (POLLIN | POLLRDNORM); 1890 else 1891 selrecord(l, &sce_in->rsel); 1892 break; 1893 case UE_ISOCHRONOUS: 1894 if (sce_in->cur != sce_in->fill) 1895 revents |= events & (POLLIN | POLLRDNORM); 1896 else 1897 selrecord(l, &sce_in->rsel); 1898 break; 1899 case UE_BULK: 1900 if (sce_in->state & UGEN_BULK_RA) { 1901 if (sce_in->ra_wb_used > 0) 1902 revents |= events & 1903 (POLLIN | POLLRDNORM); 1904 else 1905 selrecord(l, &sce_in->rsel); 1906 break; 1907 } 1908 /* 1909 * We have no easy way of determining if a read will 1910 * yield any data or a write will happen. 1911 * Pretend they will. 1912 */ 1913 revents |= events & (POLLIN | POLLRDNORM); 1914 break; 1915 default: 1916 break; 1917 } 1918 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1919 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1920 case UE_INTERRUPT: 1921 case UE_ISOCHRONOUS: 1922 /* XXX unimplemented */ 1923 break; 1924 case UE_BULK: 1925 if (sce_out->state & UGEN_BULK_WB) { 1926 if (sce_out->ra_wb_used < 1927 sce_out->limit - sce_out->ibuf) 1928 revents |= events & 1929 (POLLOUT | POLLWRNORM); 1930 else 1931 selrecord(l, &sce_out->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 & (POLLOUT | POLLWRNORM); 1940 break; 1941 default: 1942 break; 1943 } 1944 1945 1946 splx(s); 1947 return (revents); 1948 } 1949 1950 static void 1951 filt_ugenrdetach(struct knote *kn) 1952 { 1953 struct ugen_endpoint *sce = kn->kn_hook; 1954 int s; 1955 1956 s = splusb(); 1957 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1958 splx(s); 1959 } 1960 1961 static int 1962 filt_ugenread_intr(struct knote *kn, long hint) 1963 { 1964 struct ugen_endpoint *sce = kn->kn_hook; 1965 1966 kn->kn_data = sce->q.c_cc; 1967 return (kn->kn_data > 0); 1968 } 1969 1970 static int 1971 filt_ugenread_isoc(struct knote *kn, long hint) 1972 { 1973 struct ugen_endpoint *sce = kn->kn_hook; 1974 1975 if (sce->cur == sce->fill) 1976 return (0); 1977 1978 if (sce->cur < sce->fill) 1979 kn->kn_data = sce->fill - sce->cur; 1980 else 1981 kn->kn_data = (sce->limit - sce->cur) + 1982 (sce->fill - sce->ibuf); 1983 1984 return (1); 1985 } 1986 1987 static int 1988 filt_ugenread_bulk(struct knote *kn, long hint) 1989 { 1990 struct ugen_endpoint *sce = kn->kn_hook; 1991 1992 if (!(sce->state & UGEN_BULK_RA)) 1993 /* 1994 * We have no easy way of determining if a read will 1995 * yield any data or a write will happen. 1996 * So, emulate "seltrue". 1997 */ 1998 return (filt_seltrue(kn, hint)); 1999 2000 if (sce->ra_wb_used == 0) 2001 return (0); 2002 2003 kn->kn_data = sce->ra_wb_used; 2004 2005 return (1); 2006 } 2007 2008 static int 2009 filt_ugenwrite_bulk(struct knote *kn, long hint) 2010 { 2011 struct ugen_endpoint *sce = kn->kn_hook; 2012 2013 if (!(sce->state & UGEN_BULK_WB)) 2014 /* 2015 * We have no easy way of determining if a read will 2016 * yield any data or a write will happen. 2017 * So, emulate "seltrue". 2018 */ 2019 return (filt_seltrue(kn, hint)); 2020 2021 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2022 return (0); 2023 2024 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2025 2026 return (1); 2027 } 2028 2029 static const struct filterops ugenread_intr_filtops = 2030 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2031 2032 static const struct filterops ugenread_isoc_filtops = 2033 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2034 2035 static const struct filterops ugenread_bulk_filtops = 2036 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2037 2038 static const struct filterops ugenwrite_bulk_filtops = 2039 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2040 2041 int 2042 ugenkqfilter(dev_t dev, struct knote *kn) 2043 { 2044 struct ugen_softc *sc; 2045 struct ugen_endpoint *sce; 2046 struct klist *klist; 2047 int s; 2048 2049 sc = device_lookup_private(&ugen_cd, UGENUNIT(dev)); 2050 if (sc == NULL) 2051 return ENXIO; 2052 2053 if (sc->sc_dying) 2054 return (ENXIO); 2055 2056 switch (kn->kn_filter) { 2057 case EVFILT_READ: 2058 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2059 if (sce == NULL) 2060 return (EINVAL); 2061 2062 klist = &sce->rsel.sel_klist; 2063 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2064 case UE_INTERRUPT: 2065 kn->kn_fop = &ugenread_intr_filtops; 2066 break; 2067 case UE_ISOCHRONOUS: 2068 kn->kn_fop = &ugenread_isoc_filtops; 2069 break; 2070 case UE_BULK: 2071 kn->kn_fop = &ugenread_bulk_filtops; 2072 break; 2073 break; 2074 default: 2075 return (EINVAL); 2076 } 2077 break; 2078 2079 case EVFILT_WRITE: 2080 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2081 if (sce == NULL) 2082 return (EINVAL); 2083 2084 klist = &sce->rsel.sel_klist; 2085 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2086 case UE_INTERRUPT: 2087 case UE_ISOCHRONOUS: 2088 /* XXX poll doesn't support this */ 2089 return (EINVAL); 2090 2091 case UE_BULK: 2092 kn->kn_fop = &ugenwrite_bulk_filtops; 2093 break; 2094 default: 2095 return (EINVAL); 2096 } 2097 break; 2098 2099 default: 2100 return (EINVAL); 2101 } 2102 2103 kn->kn_hook = sce; 2104 2105 s = splusb(); 2106 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2107 splx(s); 2108 2109 return (0); 2110 } 2111 2112 #if defined(__FreeBSD__) 2113 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2114 #endif 2115
Indexes created Thu Sep 25 16:09:42 GMT 2025