ugen.c revision 1.96
1 /* $NetBSD: ugen.c,v 1.96 2007/12/24 14:41:19 smb 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 * 3. All advertising materials mentioning features or use of this software 25 * must display the following acknowledgement: 26 * This product includes software developed by the NetBSD 27 * Foundation, Inc. and its contributors. 28 * 4. Neither the name of The NetBSD Foundation nor the names of its 29 * contributors may be used to endorse or promote products derived 30 * from this software without specific prior written permission. 31 * 32 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 33 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 34 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 35 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 36 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 37 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 38 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 39 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 40 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 42 * POSSIBILITY OF SUCH DAMAGE. 43 */ 44 45 46 #include <sys/cdefs.h> 47 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.96 2007/12/24 14:41:19 smb Exp $"); 48 49 #include "opt_ugen_bulk_ra_wb.h" 50 #include "opt_compat_netbsd.h" 51 52 #include <sys/param.h> 53 #include <sys/systm.h> 54 #include <sys/kernel.h> 55 #include <sys/malloc.h> 56 #if defined(__NetBSD__) || defined(__OpenBSD__) 57 #include <sys/device.h> 58 #include <sys/ioctl.h> 59 #elif defined(__FreeBSD__) 60 #include <sys/module.h> 61 #include <sys/bus.h> 62 #include <sys/ioccom.h> 63 #include <sys/conf.h> 64 #include <sys/fcntl.h> 65 #include <sys/filio.h> 66 #endif 67 #include <sys/conf.h> 68 #include <sys/tty.h> 69 #include <sys/file.h> 70 #include <sys/select.h> 71 #include <sys/proc.h> 72 #include <sys/vnode.h> 73 #include <sys/poll.h> 74 75 #include <dev/usb/usb.h> 76 #include <dev/usb/usbdi.h> 77 #include <dev/usb/usbdi_util.h> 78 79 #ifdef UGEN_DEBUG 80 #define DPRINTF(x) if (ugendebug) logprintf x 81 #define DPRINTFN(n,x) if (ugendebug>(n)) logprintf x 82 int ugendebug = 0; 83 #else 84 #define DPRINTF(x) 85 #define DPRINTFN(n,x) 86 #endif 87 88 #define UGEN_CHUNK 128 /* chunk size for read */ 89 #define UGEN_IBSIZE 1020 /* buffer size */ 90 #define UGEN_BBSIZE 1024 91 92 #define UGEN_NISOFRAMES 500 /* 0.5 seconds worth */ 93 #define UGEN_NISOREQS 6 /* number of outstanding xfer requests */ 94 #define UGEN_NISORFRMS 4 /* number of frames (miliseconds) per req */ 95 96 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 97 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 98 99 struct ugen_endpoint { 100 struct ugen_softc *sc; 101 usb_endpoint_descriptor_t *edesc; 102 usbd_interface_handle iface; 103 int state; 104 #define UGEN_ASLP 0x02 /* waiting for data */ 105 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 106 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 107 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 108 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 109 usbd_pipe_handle pipeh; 110 struct clist q; 111 struct selinfo rsel; 112 u_char *ibuf; /* start of buffer (circular for isoc) */ 113 u_char *fill; /* location for input (isoc) */ 114 u_char *limit; /* end of circular buffer (isoc) */ 115 u_char *cur; /* current read location (isoc) */ 116 u_int32_t timeout; 117 #ifdef UGEN_BULK_RA_WB 118 u_int32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 119 u_int32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 120 u_int32_t ra_wb_used; /* how much is in buffer */ 121 u_int32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 122 usbd_xfer_handle ra_wb_xfer; 123 #endif 124 struct isoreq { 125 struct ugen_endpoint *sce; 126 usbd_xfer_handle xfer; 127 void *dmabuf; 128 u_int16_t sizes[UGEN_NISORFRMS]; 129 } isoreqs[UGEN_NISOREQS]; 130 }; 131 132 struct ugen_softc { 133 USBBASEDEVICE sc_dev; /* base device */ 134 usbd_device_handle sc_udev; 135 136 char sc_is_open[USB_MAX_ENDPOINTS]; 137 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 138 #define OUT 0 139 #define IN 1 140 141 int sc_refcnt; 142 char sc_buffer[UGEN_BBSIZE]; 143 u_char sc_dying; 144 }; 145 146 #if defined(__NetBSD__) 147 dev_type_open(ugenopen); 148 dev_type_close(ugenclose); 149 dev_type_read(ugenread); 150 dev_type_write(ugenwrite); 151 dev_type_ioctl(ugenioctl); 152 dev_type_poll(ugenpoll); 153 dev_type_kqfilter(ugenkqfilter); 154 155 const struct cdevsw ugen_cdevsw = { 156 ugenopen, ugenclose, ugenread, ugenwrite, ugenioctl, 157 nostop, notty, ugenpoll, nommap, ugenkqfilter, D_OTHER, 158 }; 159 #elif defined(__OpenBSD__) 160 cdev_decl(ugen); 161 #elif defined(__FreeBSD__) 162 d_open_t ugenopen; 163 d_close_t ugenclose; 164 d_read_t ugenread; 165 d_write_t ugenwrite; 166 d_ioctl_t ugenioctl; 167 d_poll_t ugenpoll; 168 169 #define UGEN_CDEV_MAJOR 114 170 171 Static struct cdevsw ugen_cdevsw = { 172 /* open */ ugenopen, 173 /* close */ ugenclose, 174 /* read */ ugenread, 175 /* write */ ugenwrite, 176 /* ioctl */ ugenioctl, 177 /* poll */ ugenpoll, 178 /* mmap */ nommap, 179 /* strategy */ nostrategy, 180 /* name */ "ugen", 181 /* maj */ UGEN_CDEV_MAJOR, 182 /* dump */ nodump, 183 /* psize */ nopsize, 184 /* flags */ 0, 185 /* bmaj */ -1 186 }; 187 #endif 188 189 Static void ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, 190 usbd_status status); 191 Static void ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 192 usbd_status status); 193 #ifdef UGEN_BULK_RA_WB 194 Static void ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 195 usbd_status status); 196 Static void ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 197 usbd_status status); 198 #endif 199 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 200 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 201 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 202 void *, int, struct lwp *); 203 Static int ugen_set_config(struct ugen_softc *sc, int configno); 204 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *sc, 205 int index, int *lenp); 206 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 207 Static int ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx); 208 209 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 210 #define UGENENDPOINT(n) (minor(n) & 0xf) 211 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 212 213 USB_DECLARE_DRIVER(ugen); 214 215 USB_MATCH(ugen) 216 { 217 USB_MATCH_START(ugen, uaa); 218 219 if (match->cf_flags & 1) 220 return (UMATCH_HIGHEST); 221 else if (uaa->usegeneric) 222 return (UMATCH_GENERIC); 223 else 224 return (UMATCH_NONE); 225 } 226 227 USB_ATTACH(ugen) 228 { 229 USB_ATTACH_START(ugen, sc, uaa); 230 usbd_device_handle udev; 231 char *devinfop; 232 usbd_status err; 233 int conf; 234 235 devinfop = usbd_devinfo_alloc(uaa->device, 0); 236 USB_ATTACH_SETUP; 237 aprint_normal("%s: %s\n", USBDEVNAME(sc->sc_dev), devinfop); 238 usbd_devinfo_free(devinfop); 239 240 sc->sc_udev = udev = uaa->device; 241 242 /* First set configuration index 0, the default one for ugen. */ 243 err = usbd_set_config_index(udev, 0, 0); 244 if (err) { 245 aprint_error("%s: setting configuration index 0 failed\n", 246 USBDEVNAME(sc->sc_dev)); 247 sc->sc_dying = 1; 248 USB_ATTACH_ERROR_RETURN; 249 } 250 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 251 252 /* Set up all the local state for this configuration. */ 253 err = ugen_set_config(sc, conf); 254 if (err) { 255 aprint_error("%s: setting configuration %d failed\n", 256 USBDEVNAME(sc->sc_dev), conf); 257 sc->sc_dying = 1; 258 USB_ATTACH_ERROR_RETURN; 259 } 260 261 #ifdef __FreeBSD__ 262 { 263 static int global_init_done = 0; 264 if (!global_init_done) { 265 cdevsw_add(&ugen_cdevsw); 266 global_init_done = 1; 267 } 268 } 269 #endif 270 271 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, 272 USBDEV(sc->sc_dev)); 273 274 if (!pmf_device_register(self, NULL, NULL)) 275 aprint_error_dev(self, "couldn't establish power handler\n"); 276 277 USB_ATTACH_SUCCESS_RETURN; 278 } 279 280 Static int 281 ugen_set_config(struct ugen_softc *sc, int configno) 282 { 283 usbd_device_handle dev = sc->sc_udev; 284 usbd_interface_handle iface; 285 usb_endpoint_descriptor_t *ed; 286 struct ugen_endpoint *sce; 287 u_int8_t niface, nendpt; 288 int ifaceno, endptno, endpt; 289 usbd_status err; 290 int dir; 291 292 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 293 USBDEVNAME(sc->sc_dev), configno, sc)); 294 295 /* 296 * We start at 1, not 0, because we don't care whether the 297 * control endpoint is open or not. It is always present. 298 */ 299 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 300 if (sc->sc_is_open[endptno]) { 301 DPRINTFN(1, 302 ("ugen_set_config: %s - endpoint %d is open\n", 303 USBDEVNAME(sc->sc_dev), endptno)); 304 return (USBD_IN_USE); 305 } 306 307 /* Avoid setting the current value. */ 308 if (usbd_get_config_descriptor(dev)->bConfigurationValue != configno) { 309 err = usbd_set_config_no(dev, configno, 1); 310 if (err) 311 return (err); 312 } 313 314 err = usbd_interface_count(dev, &niface); 315 if (err) 316 return (err); 317 memset(sc->sc_endpoints, 0, sizeof sc->sc_endpoints); 318 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 319 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 320 err = usbd_device2interface_handle(dev, ifaceno, &iface); 321 if (err) 322 return (err); 323 err = usbd_endpoint_count(iface, &nendpt); 324 if (err) 325 return (err); 326 for (endptno = 0; endptno < nendpt; endptno++) { 327 ed = usbd_interface2endpoint_descriptor(iface,endptno); 328 KASSERT(ed != NULL); 329 endpt = ed->bEndpointAddress; 330 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 331 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 332 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 333 "(%d,%d), sce=%p\n", 334 endptno, endpt, UE_GET_ADDR(endpt), 335 UE_GET_DIR(endpt), sce)); 336 sce->sc = sc; 337 sce->edesc = ed; 338 sce->iface = iface; 339 } 340 } 341 return (USBD_NORMAL_COMPLETION); 342 } 343 344 int 345 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 346 { 347 struct ugen_softc *sc; 348 int unit = UGENUNIT(dev); 349 int endpt = UGENENDPOINT(dev); 350 usb_endpoint_descriptor_t *edesc; 351 struct ugen_endpoint *sce; 352 int dir, isize; 353 usbd_status err; 354 usbd_xfer_handle xfer; 355 void *tbuf; 356 int i, j; 357 358 USB_GET_SC_OPEN(ugen, unit, sc); 359 360 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 361 flag, mode, unit, endpt)); 362 363 if (sc == NULL || sc->sc_dying) 364 return (ENXIO); 365 366 /* The control endpoint allows multiple opens. */ 367 if (endpt == USB_CONTROL_ENDPOINT) { 368 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 369 return (0); 370 } 371 372 if (sc->sc_is_open[endpt]) 373 return (EBUSY); 374 375 /* Make sure there are pipes for all directions. */ 376 for (dir = OUT; dir <= IN; dir++) { 377 if (flag & (dir == OUT ? FWRITE : FREAD)) { 378 sce = &sc->sc_endpoints[endpt][dir]; 379 if (sce == 0 || sce->edesc == 0) 380 return (ENXIO); 381 } 382 } 383 384 /* Actually open the pipes. */ 385 /* XXX Should back out properly if it fails. */ 386 for (dir = OUT; dir <= IN; dir++) { 387 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 388 continue; 389 sce = &sc->sc_endpoints[endpt][dir]; 390 sce->state = 0; 391 sce->timeout = USBD_NO_TIMEOUT; 392 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 393 sc, endpt, dir, sce)); 394 edesc = sce->edesc; 395 switch (edesc->bmAttributes & UE_XFERTYPE) { 396 case UE_INTERRUPT: 397 if (dir == OUT) { 398 err = usbd_open_pipe(sce->iface, 399 edesc->bEndpointAddress, 0, &sce->pipeh); 400 if (err) 401 return (EIO); 402 break; 403 } 404 isize = UGETW(edesc->wMaxPacketSize); 405 if (isize == 0) /* shouldn't happen */ 406 return (EINVAL); 407 sce->ibuf = malloc(isize, M_USBDEV, M_WAITOK); 408 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 409 endpt, isize)); 410 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) 411 return (ENOMEM); 412 err = usbd_open_pipe_intr(sce->iface, 413 edesc->bEndpointAddress, 414 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 415 sce->ibuf, isize, ugenintr, 416 USBD_DEFAULT_INTERVAL); 417 if (err) { 418 free(sce->ibuf, M_USBDEV); 419 clfree(&sce->q); 420 return (EIO); 421 } 422 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 423 break; 424 case UE_BULK: 425 err = usbd_open_pipe(sce->iface, 426 edesc->bEndpointAddress, 0, &sce->pipeh); 427 if (err) 428 return (EIO); 429 #ifdef UGEN_BULK_RA_WB 430 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 431 /* 432 * Use request size for non-RA/WB transfers 433 * as the default. 434 */ 435 sce->ra_wb_reqsize = UGEN_BBSIZE; 436 #endif 437 break; 438 case UE_ISOCHRONOUS: 439 if (dir == OUT) 440 return (EINVAL); 441 isize = UGETW(edesc->wMaxPacketSize); 442 if (isize == 0) /* shouldn't happen */ 443 return (EINVAL); 444 sce->ibuf = malloc(isize * UGEN_NISOFRAMES, 445 M_USBDEV, M_WAITOK); 446 sce->cur = sce->fill = sce->ibuf; 447 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 448 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 449 endpt, isize)); 450 err = usbd_open_pipe(sce->iface, 451 edesc->bEndpointAddress, 0, &sce->pipeh); 452 if (err) { 453 free(sce->ibuf, M_USBDEV); 454 return (EIO); 455 } 456 for(i = 0; i < UGEN_NISOREQS; ++i) { 457 sce->isoreqs[i].sce = sce; 458 xfer = usbd_alloc_xfer(sc->sc_udev); 459 if (xfer == 0) 460 goto bad; 461 sce->isoreqs[i].xfer = xfer; 462 tbuf = usbd_alloc_buffer 463 (xfer, isize * UGEN_NISORFRMS); 464 if (tbuf == 0) { 465 i++; 466 goto bad; 467 } 468 sce->isoreqs[i].dmabuf = tbuf; 469 for(j = 0; j < UGEN_NISORFRMS; ++j) 470 sce->isoreqs[i].sizes[j] = isize; 471 usbd_setup_isoc_xfer 472 (xfer, sce->pipeh, &sce->isoreqs[i], 473 sce->isoreqs[i].sizes, 474 UGEN_NISORFRMS, USBD_NO_COPY, 475 ugen_isoc_rintr); 476 (void)usbd_transfer(xfer); 477 } 478 DPRINTFN(5, ("ugenopen: isoc open done\n")); 479 break; 480 bad: 481 while (--i >= 0) /* implicit buffer free */ 482 usbd_free_xfer(sce->isoreqs[i].xfer); 483 return (ENOMEM); 484 case UE_CONTROL: 485 sce->timeout = USBD_DEFAULT_TIMEOUT; 486 return (EINVAL); 487 } 488 } 489 sc->sc_is_open[endpt] = 1; 490 return (0); 491 } 492 493 int 494 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 495 { 496 int endpt = UGENENDPOINT(dev); 497 struct ugen_softc *sc; 498 struct ugen_endpoint *sce; 499 int dir; 500 int i; 501 502 USB_GET_SC(ugen, UGENUNIT(dev), sc); 503 504 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 505 flag, mode, UGENUNIT(dev), endpt)); 506 507 #ifdef DIAGNOSTIC 508 if (!sc->sc_is_open[endpt]) { 509 printf("ugenclose: not open\n"); 510 return (EINVAL); 511 } 512 #endif 513 514 if (endpt == USB_CONTROL_ENDPOINT) { 515 DPRINTFN(5, ("ugenclose: close control\n")); 516 sc->sc_is_open[endpt] = 0; 517 return (0); 518 } 519 520 for (dir = OUT; dir <= IN; dir++) { 521 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 522 continue; 523 sce = &sc->sc_endpoints[endpt][dir]; 524 if (sce == NULL || sce->pipeh == NULL) 525 continue; 526 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 527 endpt, dir, sce)); 528 529 usbd_abort_pipe(sce->pipeh); 530 usbd_close_pipe(sce->pipeh); 531 sce->pipeh = NULL; 532 533 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 534 case UE_INTERRUPT: 535 ndflush(&sce->q, sce->q.c_cc); 536 clfree(&sce->q); 537 break; 538 case UE_ISOCHRONOUS: 539 for (i = 0; i < UGEN_NISOREQS; ++i) 540 usbd_free_xfer(sce->isoreqs[i].xfer); 541 break; 542 #ifdef UGEN_BULK_RA_WB 543 case UE_BULK: 544 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) 545 /* ibuf freed below */ 546 usbd_free_xfer(sce->ra_wb_xfer); 547 break; 548 #endif 549 default: 550 break; 551 } 552 553 if (sce->ibuf != NULL) { 554 free(sce->ibuf, M_USBDEV); 555 sce->ibuf = NULL; 556 clfree(&sce->q); 557 } 558 } 559 sc->sc_is_open[endpt] = 0; 560 561 return (0); 562 } 563 564 Static int 565 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 566 { 567 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 568 u_int32_t n, tn; 569 usbd_xfer_handle xfer; 570 usbd_status err; 571 int s; 572 int error = 0; 573 574 DPRINTFN(5, ("%s: ugenread: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 575 576 if (sc->sc_dying) 577 return (EIO); 578 579 if (endpt == USB_CONTROL_ENDPOINT) 580 return (ENODEV); 581 582 #ifdef DIAGNOSTIC 583 if (sce->edesc == NULL) { 584 printf("ugenread: no edesc\n"); 585 return (EIO); 586 } 587 if (sce->pipeh == NULL) { 588 printf("ugenread: no pipe\n"); 589 return (EIO); 590 } 591 #endif 592 593 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 594 case UE_INTERRUPT: 595 /* Block until activity occurred. */ 596 s = splusb(); 597 while (sce->q.c_cc == 0) { 598 if (flag & IO_NDELAY) { 599 splx(s); 600 return (EWOULDBLOCK); 601 } 602 sce->state |= UGEN_ASLP; 603 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 604 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 605 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 606 if (sc->sc_dying) 607 error = EIO; 608 if (error) { 609 sce->state &= ~UGEN_ASLP; 610 break; 611 } 612 } 613 splx(s); 614 615 /* Transfer as many chunks as possible. */ 616 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 617 n = min(sce->q.c_cc, uio->uio_resid); 618 if (n > sizeof(sc->sc_buffer)) 619 n = sizeof(sc->sc_buffer); 620 621 /* Remove a small chunk from the input queue. */ 622 q_to_b(&sce->q, sc->sc_buffer, n); 623 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 624 625 /* Copy the data to the user process. */ 626 error = uiomove(sc->sc_buffer, n, uio); 627 if (error) 628 break; 629 } 630 break; 631 case UE_BULK: 632 #ifdef UGEN_BULK_RA_WB 633 if (sce->state & UGEN_BULK_RA) { 634 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 635 uio->uio_resid, sce->ra_wb_used)); 636 xfer = sce->ra_wb_xfer; 637 638 s = splusb(); 639 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 640 splx(s); 641 return (EWOULDBLOCK); 642 } 643 while (uio->uio_resid > 0 && !error) { 644 while (sce->ra_wb_used == 0) { 645 sce->state |= UGEN_ASLP; 646 DPRINTFN(5, 647 ("ugenread: sleep on %p\n", 648 sce)); 649 error = tsleep(sce, PZERO | PCATCH, 650 "ugenrb", 0); 651 DPRINTFN(5, 652 ("ugenread: woke, error=%d\n", 653 error)); 654 if (sc->sc_dying) 655 error = EIO; 656 if (error) { 657 sce->state &= ~UGEN_ASLP; 658 break; 659 } 660 } 661 662 /* Copy data to the process. */ 663 while (uio->uio_resid > 0 664 && sce->ra_wb_used > 0) { 665 n = min(uio->uio_resid, 666 sce->ra_wb_used); 667 n = min(n, sce->limit - sce->cur); 668 error = uiomove(sce->cur, n, uio); 669 if (error) 670 break; 671 sce->cur += n; 672 sce->ra_wb_used -= n; 673 if (sce->cur == sce->limit) 674 sce->cur = sce->ibuf; 675 } 676 677 /* 678 * If the transfers stopped because the 679 * buffer was full, restart them. 680 */ 681 if (sce->state & UGEN_RA_WB_STOP && 682 sce->ra_wb_used < sce->limit - sce->ibuf) { 683 n = (sce->limit - sce->ibuf) 684 - sce->ra_wb_used; 685 usbd_setup_xfer(xfer, 686 sce->pipeh, sce, NULL, 687 min(n, sce->ra_wb_xferlen), 688 USBD_NO_COPY, USBD_NO_TIMEOUT, 689 ugen_bulkra_intr); 690 sce->state &= ~UGEN_RA_WB_STOP; 691 err = usbd_transfer(xfer); 692 if (err != USBD_IN_PROGRESS) 693 /* 694 * The transfer has not been 695 * queued. Setting STOP 696 * will make us try 697 * again at the next read. 698 */ 699 sce->state |= UGEN_RA_WB_STOP; 700 } 701 } 702 splx(s); 703 break; 704 } 705 #endif 706 xfer = usbd_alloc_xfer(sc->sc_udev); 707 if (xfer == 0) 708 return (ENOMEM); 709 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 710 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 711 tn = n; 712 err = usbd_bulk_transfer( 713 xfer, sce->pipeh, 714 sce->state & UGEN_SHORT_OK ? 715 USBD_SHORT_XFER_OK : 0, 716 sce->timeout, sc->sc_buffer, &tn, "ugenrb"); 717 if (err) { 718 if (err == USBD_INTERRUPTED) 719 error = EINTR; 720 else if (err == USBD_TIMEOUT) 721 error = ETIMEDOUT; 722 else 723 error = EIO; 724 break; 725 } 726 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 727 error = uiomove(sc->sc_buffer, tn, uio); 728 if (error || tn < n) 729 break; 730 } 731 usbd_free_xfer(xfer); 732 break; 733 case UE_ISOCHRONOUS: 734 s = splusb(); 735 while (sce->cur == sce->fill) { 736 if (flag & IO_NDELAY) { 737 splx(s); 738 return (EWOULDBLOCK); 739 } 740 sce->state |= UGEN_ASLP; 741 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 742 error = tsleep(sce, PZERO | PCATCH, "ugenri", 0); 743 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 744 if (sc->sc_dying) 745 error = EIO; 746 if (error) { 747 sce->state &= ~UGEN_ASLP; 748 break; 749 } 750 } 751 752 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 753 if(sce->fill > sce->cur) 754 n = min(sce->fill - sce->cur, uio->uio_resid); 755 else 756 n = min(sce->limit - sce->cur, uio->uio_resid); 757 758 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 759 760 /* Copy the data to the user process. */ 761 error = uiomove(sce->cur, n, uio); 762 if (error) 763 break; 764 sce->cur += n; 765 if(sce->cur >= sce->limit) 766 sce->cur = sce->ibuf; 767 } 768 splx(s); 769 break; 770 771 772 default: 773 return (ENXIO); 774 } 775 return (error); 776 } 777 778 int 779 ugenread(dev_t dev, struct uio *uio, int flag) 780 { 781 int endpt = UGENENDPOINT(dev); 782 struct ugen_softc *sc; 783 int error; 784 785 USB_GET_SC(ugen, UGENUNIT(dev), sc); 786 787 sc->sc_refcnt++; 788 error = ugen_do_read(sc, endpt, uio, flag); 789 if (--sc->sc_refcnt < 0) 790 usb_detach_wakeup(USBDEV(sc->sc_dev)); 791 return (error); 792 } 793 794 Static int 795 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 796 int flag) 797 { 798 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 799 u_int32_t n; 800 int error = 0; 801 #ifdef UGEN_BULK_RA_WB 802 int s; 803 u_int32_t tn; 804 char *dbuf; 805 #endif 806 usbd_xfer_handle xfer; 807 usbd_status err; 808 809 DPRINTFN(5, ("%s: ugenwrite: %d\n", USBDEVNAME(sc->sc_dev), endpt)); 810 811 if (sc->sc_dying) 812 return (EIO); 813 814 if (endpt == USB_CONTROL_ENDPOINT) 815 return (ENODEV); 816 817 #ifdef DIAGNOSTIC 818 if (sce->edesc == NULL) { 819 printf("ugenwrite: no edesc\n"); 820 return (EIO); 821 } 822 if (sce->pipeh == NULL) { 823 printf("ugenwrite: no pipe\n"); 824 return (EIO); 825 } 826 #endif 827 828 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 829 case UE_BULK: 830 #ifdef UGEN_BULK_RA_WB 831 if (sce->state & UGEN_BULK_WB) { 832 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 833 uio->uio_resid, sce->ra_wb_used)); 834 xfer = sce->ra_wb_xfer; 835 836 s = splusb(); 837 if (sce->ra_wb_used == sce->limit - sce->ibuf && 838 flag & IO_NDELAY) { 839 splx(s); 840 return (EWOULDBLOCK); 841 } 842 while (uio->uio_resid > 0 && !error) { 843 while (sce->ra_wb_used == 844 sce->limit - sce->ibuf) { 845 sce->state |= UGEN_ASLP; 846 DPRINTFN(5, 847 ("ugenwrite: sleep on %p\n", 848 sce)); 849 error = tsleep(sce, PZERO | PCATCH, 850 "ugenwb", 0); 851 DPRINTFN(5, 852 ("ugenwrite: woke, error=%d\n", 853 error)); 854 if (sc->sc_dying) 855 error = EIO; 856 if (error) { 857 sce->state &= ~UGEN_ASLP; 858 break; 859 } 860 } 861 862 /* Copy data from the process. */ 863 while (uio->uio_resid > 0 && 864 sce->ra_wb_used < sce->limit - sce->ibuf) { 865 n = min(uio->uio_resid, 866 (sce->limit - sce->ibuf) 867 - sce->ra_wb_used); 868 n = min(n, sce->limit - sce->fill); 869 error = uiomove(sce->fill, n, uio); 870 if (error) 871 break; 872 sce->fill += n; 873 sce->ra_wb_used += n; 874 if (sce->fill == sce->limit) 875 sce->fill = sce->ibuf; 876 } 877 878 /* 879 * If the transfers stopped because the 880 * buffer was empty, restart them. 881 */ 882 if (sce->state & UGEN_RA_WB_STOP && 883 sce->ra_wb_used > 0) { 884 dbuf = (char *)usbd_get_buffer(xfer); 885 n = min(sce->ra_wb_used, 886 sce->ra_wb_xferlen); 887 tn = min(n, sce->limit - sce->cur); 888 memcpy(dbuf, sce->cur, tn); 889 dbuf += tn; 890 if (n - tn > 0) 891 memcpy(dbuf, sce->ibuf, 892 n - tn); 893 usbd_setup_xfer(xfer, 894 sce->pipeh, sce, NULL, n, 895 USBD_NO_COPY, USBD_NO_TIMEOUT, 896 ugen_bulkwb_intr); 897 sce->state &= ~UGEN_RA_WB_STOP; 898 err = usbd_transfer(xfer); 899 if (err != USBD_IN_PROGRESS) 900 /* 901 * The transfer has not been 902 * queued. Setting STOP 903 * will make us try again 904 * at the next read. 905 */ 906 sce->state |= UGEN_RA_WB_STOP; 907 } 908 } 909 splx(s); 910 break; 911 } 912 #endif 913 xfer = usbd_alloc_xfer(sc->sc_udev); 914 if (xfer == 0) 915 return (EIO); 916 while ((n = min(UGEN_BBSIZE, uio->uio_resid)) != 0) { 917 error = uiomove(sc->sc_buffer, n, uio); 918 if (error) 919 break; 920 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 921 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, 922 sce->timeout, sc->sc_buffer, &n,"ugenwb"); 923 if (err) { 924 if (err == USBD_INTERRUPTED) 925 error = EINTR; 926 else if (err == USBD_TIMEOUT) 927 error = ETIMEDOUT; 928 else 929 error = EIO; 930 break; 931 } 932 } 933 usbd_free_xfer(xfer); 934 break; 935 case UE_INTERRUPT: 936 xfer = usbd_alloc_xfer(sc->sc_udev); 937 if (xfer == 0) 938 return (EIO); 939 while ((n = min(UGETW(sce->edesc->wMaxPacketSize), 940 uio->uio_resid)) != 0) { 941 error = uiomove(sc->sc_buffer, n, uio); 942 if (error) 943 break; 944 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 945 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 946 sce->timeout, sc->sc_buffer, &n, "ugenwi"); 947 if (err) { 948 if (err == USBD_INTERRUPTED) 949 error = EINTR; 950 else if (err == USBD_TIMEOUT) 951 error = ETIMEDOUT; 952 else 953 error = EIO; 954 break; 955 } 956 } 957 usbd_free_xfer(xfer); 958 break; 959 default: 960 return (ENXIO); 961 } 962 return (error); 963 } 964 965 int 966 ugenwrite(dev_t dev, struct uio *uio, int flag) 967 { 968 int endpt = UGENENDPOINT(dev); 969 struct ugen_softc *sc; 970 int error; 971 972 USB_GET_SC(ugen, UGENUNIT(dev), sc); 973 974 sc->sc_refcnt++; 975 error = ugen_do_write(sc, endpt, uio, flag); 976 if (--sc->sc_refcnt < 0) 977 usb_detach_wakeup(USBDEV(sc->sc_dev)); 978 return (error); 979 } 980 981 #if defined(__NetBSD__) || defined(__OpenBSD__) 982 int 983 ugen_activate(device_ptr_t self, enum devact act) 984 { 985 struct ugen_softc *sc = (struct ugen_softc *)self; 986 987 switch (act) { 988 case DVACT_ACTIVATE: 989 return (EOPNOTSUPP); 990 991 case DVACT_DEACTIVATE: 992 sc->sc_dying = 1; 993 break; 994 } 995 return (0); 996 } 997 #endif 998 999 USB_DETACH(ugen) 1000 { 1001 USB_DETACH_START(ugen, sc); 1002 struct ugen_endpoint *sce; 1003 int i, dir; 1004 int s; 1005 #if defined(__NetBSD__) || defined(__OpenBSD__) 1006 int maj, mn; 1007 1008 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1009 #elif defined(__FreeBSD__) 1010 DPRINTF(("ugen_detach: sc=%p\n", sc)); 1011 #endif 1012 1013 sc->sc_dying = 1; 1014 pmf_device_deregister(self); 1015 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1016 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1017 for (dir = OUT; dir <= IN; dir++) { 1018 sce = &sc->sc_endpoints[i][dir]; 1019 if (sce && sce->pipeh) 1020 usbd_abort_pipe(sce->pipeh); 1021 } 1022 } 1023 1024 s = splusb(); 1025 if (--sc->sc_refcnt >= 0) { 1026 /* Wake everyone */ 1027 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1028 wakeup(&sc->sc_endpoints[i][IN]); 1029 /* Wait for processes to go away. */ 1030 usb_detach_wait(USBDEV(sc->sc_dev)); 1031 } 1032 splx(s); 1033 1034 #if defined(__NetBSD__) || defined(__OpenBSD__) 1035 /* locate the major number */ 1036 #if defined(__NetBSD__) 1037 maj = cdevsw_lookup_major(&ugen_cdevsw); 1038 #elif defined(__OpenBSD__) 1039 for (maj = 0; maj < nchrdev; maj++) 1040 if (cdevsw[maj].d_open == ugenopen) 1041 break; 1042 #endif 1043 1044 /* Nuke the vnodes for any open instances (calls close). */ 1045 mn = device_unit(self) * USB_MAX_ENDPOINTS; 1046 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1047 #elif defined(__FreeBSD__) 1048 /* XXX not implemented yet */ 1049 #endif 1050 1051 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, 1052 USBDEV(sc->sc_dev)); 1053 1054 return (0); 1055 } 1056 1057 Static void 1058 ugenintr(usbd_xfer_handle xfer, usbd_private_handle addr, usbd_status status) 1059 { 1060 struct ugen_endpoint *sce = addr; 1061 /*struct ugen_softc *sc = sce->sc;*/ 1062 u_int32_t count; 1063 u_char *ibuf; 1064 1065 if (status == USBD_CANCELLED) 1066 return; 1067 1068 if (status != USBD_NORMAL_COMPLETION) { 1069 DPRINTF(("ugenintr: status=%d\n", status)); 1070 if (status == USBD_STALLED) 1071 usbd_clear_endpoint_stall_async(sce->pipeh); 1072 return; 1073 } 1074 1075 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1076 ibuf = sce->ibuf; 1077 1078 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1079 xfer, status, count)); 1080 DPRINTFN(5, (" data = %02x %02x %02x\n", 1081 ibuf[0], ibuf[1], ibuf[2])); 1082 1083 (void)b_to_q(ibuf, count, &sce->q); 1084 1085 if (sce->state & UGEN_ASLP) { 1086 sce->state &= ~UGEN_ASLP; 1087 DPRINTFN(5, ("ugen_intr: waking %p\n", sce)); 1088 wakeup(sce); 1089 } 1090 selnotify(&sce->rsel, 0); 1091 } 1092 1093 Static void 1094 ugen_isoc_rintr(usbd_xfer_handle xfer, usbd_private_handle addr, 1095 usbd_status status) 1096 { 1097 struct isoreq *req = addr; 1098 struct ugen_endpoint *sce = req->sce; 1099 u_int32_t count, n; 1100 int i, isize; 1101 1102 /* Return if we are aborting. */ 1103 if (status == USBD_CANCELLED) 1104 return; 1105 1106 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1107 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1108 (long)(req - sce->isoreqs), count)); 1109 1110 /* throw away oldest input if the buffer is full */ 1111 if(sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1112 sce->cur += count; 1113 if(sce->cur >= sce->limit) 1114 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1115 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1116 count)); 1117 } 1118 1119 isize = UGETW(sce->edesc->wMaxPacketSize); 1120 for (i = 0; i < UGEN_NISORFRMS; i++) { 1121 u_int32_t actlen = req->sizes[i]; 1122 char const *tbuf = (char const *)req->dmabuf + isize * i; 1123 1124 /* copy data to buffer */ 1125 while (actlen > 0) { 1126 n = min(actlen, sce->limit - sce->fill); 1127 memcpy(sce->fill, tbuf, n); 1128 1129 tbuf += n; 1130 actlen -= n; 1131 sce->fill += n; 1132 if(sce->fill == sce->limit) 1133 sce->fill = sce->ibuf; 1134 } 1135 1136 /* setup size for next transfer */ 1137 req->sizes[i] = isize; 1138 } 1139 1140 usbd_setup_isoc_xfer(xfer, sce->pipeh, req, req->sizes, UGEN_NISORFRMS, 1141 USBD_NO_COPY, ugen_isoc_rintr); 1142 (void)usbd_transfer(xfer); 1143 1144 if (sce->state & UGEN_ASLP) { 1145 sce->state &= ~UGEN_ASLP; 1146 DPRINTFN(5, ("ugen_isoc_rintr: waking %p\n", sce)); 1147 wakeup(sce); 1148 } 1149 selnotify(&sce->rsel, 0); 1150 } 1151 1152 #ifdef UGEN_BULK_RA_WB 1153 Static void 1154 ugen_bulkra_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1155 usbd_status status) 1156 { 1157 struct ugen_endpoint *sce = addr; 1158 u_int32_t count, n; 1159 char const *tbuf; 1160 usbd_status err; 1161 1162 /* Return if we are aborting. */ 1163 if (status == USBD_CANCELLED) 1164 return; 1165 1166 if (status != USBD_NORMAL_COMPLETION) { 1167 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1168 sce->state |= UGEN_RA_WB_STOP; 1169 if (status == USBD_STALLED) 1170 usbd_clear_endpoint_stall_async(sce->pipeh); 1171 return; 1172 } 1173 1174 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1175 1176 /* Keep track of how much is in the buffer. */ 1177 sce->ra_wb_used += count; 1178 1179 /* Copy data to buffer. */ 1180 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1181 n = min(count, sce->limit - sce->fill); 1182 memcpy(sce->fill, tbuf, n); 1183 tbuf += n; 1184 count -= n; 1185 sce->fill += n; 1186 if (sce->fill == sce->limit) 1187 sce->fill = sce->ibuf; 1188 if (count > 0) { 1189 memcpy(sce->fill, tbuf, count); 1190 sce->fill += count; 1191 } 1192 1193 /* Set up the next request if necessary. */ 1194 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1195 if (n > 0) { 1196 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1197 min(n, sce->ra_wb_xferlen), USBD_NO_COPY, 1198 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1199 err = usbd_transfer(xfer); 1200 if (err != USBD_IN_PROGRESS) { 1201 printf("usbd_bulkra_intr: error=%d\n", err); 1202 /* 1203 * The transfer has not been queued. Setting STOP 1204 * will make us try again at the next read. 1205 */ 1206 sce->state |= UGEN_RA_WB_STOP; 1207 } 1208 } 1209 else 1210 sce->state |= UGEN_RA_WB_STOP; 1211 1212 if (sce->state & UGEN_ASLP) { 1213 sce->state &= ~UGEN_ASLP; 1214 DPRINTFN(5, ("ugen_bulkra_intr: waking %p\n", sce)); 1215 wakeup(sce); 1216 } 1217 selnotify(&sce->rsel, 0); 1218 } 1219 1220 Static void 1221 ugen_bulkwb_intr(usbd_xfer_handle xfer, usbd_private_handle addr, 1222 usbd_status status) 1223 { 1224 struct ugen_endpoint *sce = addr; 1225 u_int32_t count, n; 1226 char *tbuf; 1227 usbd_status err; 1228 1229 /* Return if we are aborting. */ 1230 if (status == USBD_CANCELLED) 1231 return; 1232 1233 if (status != USBD_NORMAL_COMPLETION) { 1234 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1235 sce->state |= UGEN_RA_WB_STOP; 1236 if (status == USBD_STALLED) 1237 usbd_clear_endpoint_stall_async(sce->pipeh); 1238 return; 1239 } 1240 1241 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1242 1243 /* Keep track of how much is in the buffer. */ 1244 sce->ra_wb_used -= count; 1245 1246 /* Update buffer pointers. */ 1247 sce->cur += count; 1248 if (sce->cur >= sce->limit) 1249 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1250 1251 /* Set up next request if necessary. */ 1252 if (sce->ra_wb_used > 0) { 1253 /* copy data from buffer */ 1254 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1255 count = min(sce->ra_wb_used, sce->ra_wb_xferlen); 1256 n = min(count, sce->limit - sce->cur); 1257 memcpy(tbuf, sce->cur, n); 1258 tbuf += n; 1259 if (count - n > 0) 1260 memcpy(tbuf, sce->ibuf, count - n); 1261 1262 usbd_setup_xfer(xfer, sce->pipeh, sce, NULL, 1263 count, USBD_NO_COPY, USBD_NO_TIMEOUT, ugen_bulkwb_intr); 1264 err = usbd_transfer(xfer); 1265 if (err != USBD_IN_PROGRESS) { 1266 printf("usbd_bulkwb_intr: error=%d\n", err); 1267 /* 1268 * The transfer has not been queued. Setting STOP 1269 * will make us try again at the next write. 1270 */ 1271 sce->state |= UGEN_RA_WB_STOP; 1272 } 1273 } 1274 else 1275 sce->state |= UGEN_RA_WB_STOP; 1276 1277 if (sce->state & UGEN_ASLP) { 1278 sce->state &= ~UGEN_ASLP; 1279 DPRINTFN(5, ("ugen_bulkwb_intr: waking %p\n", sce)); 1280 wakeup(sce); 1281 } 1282 selnotify(&sce->rsel, 0); 1283 } 1284 #endif 1285 1286 Static usbd_status 1287 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1288 { 1289 usbd_interface_handle iface; 1290 usb_endpoint_descriptor_t *ed; 1291 usbd_status err; 1292 struct ugen_endpoint *sce; 1293 u_int8_t niface, nendpt, endptno, endpt; 1294 int dir; 1295 1296 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1297 1298 err = usbd_interface_count(sc->sc_udev, &niface); 1299 if (err) 1300 return (err); 1301 if (ifaceidx < 0 || ifaceidx >= niface) 1302 return (USBD_INVAL); 1303 1304 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1305 if (err) 1306 return (err); 1307 err = usbd_endpoint_count(iface, &nendpt); 1308 if (err) 1309 return (err); 1310 /* XXX should only do this after setting new altno has succeeded */ 1311 for (endptno = 0; endptno < nendpt; endptno++) { 1312 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1313 endpt = ed->bEndpointAddress; 1314 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1315 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1316 sce->sc = 0; 1317 sce->edesc = 0; 1318 sce->iface = 0; 1319 } 1320 1321 /* change setting */ 1322 err = usbd_set_interface(iface, altno); 1323 if (err) 1324 return (err); 1325 1326 err = usbd_endpoint_count(iface, &nendpt); 1327 if (err) 1328 return (err); 1329 for (endptno = 0; endptno < nendpt; endptno++) { 1330 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1331 KASSERT(ed != NULL); 1332 endpt = ed->bEndpointAddress; 1333 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1334 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1335 sce->sc = sc; 1336 sce->edesc = ed; 1337 sce->iface = iface; 1338 } 1339 return (0); 1340 } 1341 1342 /* Retrieve a complete descriptor for a certain device and index. */ 1343 Static usb_config_descriptor_t * 1344 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1345 { 1346 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1347 int len; 1348 usbd_status err; 1349 1350 if (index == USB_CURRENT_CONFIG_INDEX) { 1351 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1352 len = UGETW(tdesc->wTotalLength); 1353 if (lenp) 1354 *lenp = len; 1355 cdesc = malloc(len, M_TEMP, M_WAITOK); 1356 memcpy(cdesc, tdesc, len); 1357 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1358 } else { 1359 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1360 if (err) 1361 return (0); 1362 len = UGETW(cdescr.wTotalLength); 1363 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1364 if (lenp) 1365 *lenp = len; 1366 cdesc = malloc(len, M_TEMP, M_WAITOK); 1367 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1368 if (err) { 1369 free(cdesc, M_TEMP); 1370 return (0); 1371 } 1372 } 1373 return (cdesc); 1374 } 1375 1376 Static int 1377 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1378 { 1379 usbd_interface_handle iface; 1380 usbd_status err; 1381 1382 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1383 if (err) 1384 return (-1); 1385 return (usbd_get_interface_altindex(iface)); 1386 } 1387 1388 Static int 1389 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1390 void *addr, int flag, struct lwp *l) 1391 { 1392 struct ugen_endpoint *sce; 1393 usbd_status err; 1394 usbd_interface_handle iface; 1395 struct usb_config_desc *cd; 1396 usb_config_descriptor_t *cdesc; 1397 struct usb_interface_desc *id; 1398 usb_interface_descriptor_t *idesc; 1399 struct usb_endpoint_desc *ed; 1400 usb_endpoint_descriptor_t *edesc; 1401 struct usb_alt_interface *ai; 1402 struct usb_string_desc *si; 1403 u_int8_t conf, alt; 1404 1405 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1406 if (sc->sc_dying) 1407 return (EIO); 1408 1409 switch (cmd) { 1410 case FIONBIO: 1411 /* All handled in the upper FS layer. */ 1412 return (0); 1413 case USB_SET_SHORT_XFER: 1414 if (endpt == USB_CONTROL_ENDPOINT) 1415 return (EINVAL); 1416 /* This flag only affects read */ 1417 sce = &sc->sc_endpoints[endpt][IN]; 1418 if (sce == NULL || sce->pipeh == NULL) 1419 return (EINVAL); 1420 if (*(int *)addr) 1421 sce->state |= UGEN_SHORT_OK; 1422 else 1423 sce->state &= ~UGEN_SHORT_OK; 1424 return (0); 1425 case USB_SET_TIMEOUT: 1426 sce = &sc->sc_endpoints[endpt][IN]; 1427 if (sce == NULL 1428 /* XXX this shouldn't happen, but the distinction between 1429 input and output pipes isn't clear enough. 1430 || sce->pipeh == NULL */ 1431 ) 1432 return (EINVAL); 1433 sce->timeout = *(int *)addr; 1434 return (0); 1435 case USB_SET_BULK_RA: 1436 #ifdef UGEN_BULK_RA_WB 1437 if (endpt == USB_CONTROL_ENDPOINT) 1438 return (EINVAL); 1439 sce = &sc->sc_endpoints[endpt][IN]; 1440 if (sce == NULL || sce->pipeh == NULL) 1441 return (EINVAL); 1442 edesc = sce->edesc; 1443 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1444 return (EINVAL); 1445 1446 if (*(int *)addr) { 1447 /* Only turn RA on if it's currently off. */ 1448 if (sce->state & UGEN_BULK_RA) 1449 return (0); 1450 1451 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1452 /* shouldn't happen */ 1453 return (EINVAL); 1454 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1455 if (sce->ra_wb_xfer == NULL) 1456 return (ENOMEM); 1457 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1458 /* 1459 * Set up a dmabuf because we reuse the xfer with 1460 * the same (max) request length like isoc. 1461 */ 1462 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1463 sce->ra_wb_xferlen) == 0) { 1464 usbd_free_xfer(sce->ra_wb_xfer); 1465 return (ENOMEM); 1466 } 1467 sce->ibuf = malloc(sce->ra_wb_bufsize, 1468 M_USBDEV, M_WAITOK); 1469 sce->fill = sce->cur = sce->ibuf; 1470 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1471 sce->ra_wb_used = 0; 1472 sce->state |= UGEN_BULK_RA; 1473 sce->state &= ~UGEN_RA_WB_STOP; 1474 /* Now start reading. */ 1475 usbd_setup_xfer(sce->ra_wb_xfer, sce->pipeh, sce, 1476 NULL, 1477 min(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1478 USBD_NO_COPY, USBD_NO_TIMEOUT, 1479 ugen_bulkra_intr); 1480 err = usbd_transfer(sce->ra_wb_xfer); 1481 if (err != USBD_IN_PROGRESS) { 1482 sce->state &= ~UGEN_BULK_RA; 1483 free(sce->ibuf, M_USBDEV); 1484 sce->ibuf = NULL; 1485 usbd_free_xfer(sce->ra_wb_xfer); 1486 return (EIO); 1487 } 1488 } else { 1489 /* Only turn RA off if it's currently on. */ 1490 if (!(sce->state & UGEN_BULK_RA)) 1491 return (0); 1492 1493 sce->state &= ~UGEN_BULK_RA; 1494 usbd_abort_pipe(sce->pipeh); 1495 usbd_free_xfer(sce->ra_wb_xfer); 1496 /* 1497 * XXX Discard whatever's in the buffer, but we 1498 * should keep it around and drain the buffer 1499 * instead. 1500 */ 1501 free(sce->ibuf, M_USBDEV); 1502 sce->ibuf = NULL; 1503 } 1504 return (0); 1505 #else 1506 return (EOPNOTSUPP); 1507 #endif 1508 case USB_SET_BULK_WB: 1509 #ifdef UGEN_BULK_RA_WB 1510 if (endpt == USB_CONTROL_ENDPOINT) 1511 return (EINVAL); 1512 sce = &sc->sc_endpoints[endpt][OUT]; 1513 if (sce == NULL || sce->pipeh == NULL) 1514 return (EINVAL); 1515 edesc = sce->edesc; 1516 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1517 return (EINVAL); 1518 1519 if (*(int *)addr) { 1520 /* Only turn WB on if it's currently off. */ 1521 if (sce->state & UGEN_BULK_WB) 1522 return (0); 1523 1524 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1525 /* shouldn't happen */ 1526 return (EINVAL); 1527 sce->ra_wb_xfer = usbd_alloc_xfer(sc->sc_udev); 1528 if (sce->ra_wb_xfer == NULL) 1529 return (ENOMEM); 1530 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1531 /* 1532 * Set up a dmabuf because we reuse the xfer with 1533 * the same (max) request length like isoc. 1534 */ 1535 if (usbd_alloc_buffer(sce->ra_wb_xfer, 1536 sce->ra_wb_xferlen) == 0) { 1537 usbd_free_xfer(sce->ra_wb_xfer); 1538 return (ENOMEM); 1539 } 1540 sce->ibuf = malloc(sce->ra_wb_bufsize, 1541 M_USBDEV, M_WAITOK); 1542 sce->fill = sce->cur = sce->ibuf; 1543 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1544 sce->ra_wb_used = 0; 1545 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1546 } else { 1547 /* Only turn WB off if it's currently on. */ 1548 if (!(sce->state & UGEN_BULK_WB)) 1549 return (0); 1550 1551 sce->state &= ~UGEN_BULK_WB; 1552 /* 1553 * XXX Discard whatever's in the buffer, but we 1554 * should keep it around and keep writing to 1555 * drain the buffer instead. 1556 */ 1557 usbd_abort_pipe(sce->pipeh); 1558 usbd_free_xfer(sce->ra_wb_xfer); 1559 free(sce->ibuf, M_USBDEV); 1560 sce->ibuf = NULL; 1561 } 1562 return (0); 1563 #else 1564 return (EOPNOTSUPP); 1565 #endif 1566 case USB_SET_BULK_RA_OPT: 1567 case USB_SET_BULK_WB_OPT: 1568 #ifdef UGEN_BULK_RA_WB 1569 { 1570 struct usb_bulk_ra_wb_opt *opt; 1571 1572 if (endpt == USB_CONTROL_ENDPOINT) 1573 return (EINVAL); 1574 opt = (struct usb_bulk_ra_wb_opt *)addr; 1575 if (cmd == USB_SET_BULK_RA_OPT) 1576 sce = &sc->sc_endpoints[endpt][IN]; 1577 else 1578 sce = &sc->sc_endpoints[endpt][OUT]; 1579 if (sce == NULL || sce->pipeh == NULL) 1580 return (EINVAL); 1581 if (opt->ra_wb_buffer_size < 1 || 1582 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1583 opt->ra_wb_request_size < 1 || 1584 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1585 return (EINVAL); 1586 /* 1587 * XXX These changes do not take effect until the 1588 * next time RA/WB mode is enabled but they ought to 1589 * take effect immediately. 1590 */ 1591 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1592 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1593 return (0); 1594 } 1595 #else 1596 return (EOPNOTSUPP); 1597 #endif 1598 default: 1599 break; 1600 } 1601 1602 if (endpt != USB_CONTROL_ENDPOINT) 1603 return (EINVAL); 1604 1605 switch (cmd) { 1606 #ifdef UGEN_DEBUG 1607 case USB_SETDEBUG: 1608 ugendebug = *(int *)addr; 1609 break; 1610 #endif 1611 case USB_GET_CONFIG: 1612 err = usbd_get_config(sc->sc_udev, &conf); 1613 if (err) 1614 return (EIO); 1615 *(int *)addr = conf; 1616 break; 1617 case USB_SET_CONFIG: 1618 if (!(flag & FWRITE)) 1619 return (EPERM); 1620 err = ugen_set_config(sc, *(int *)addr); 1621 switch (err) { 1622 case USBD_NORMAL_COMPLETION: 1623 break; 1624 case USBD_IN_USE: 1625 return (EBUSY); 1626 default: 1627 return (EIO); 1628 } 1629 break; 1630 case USB_GET_ALTINTERFACE: 1631 ai = (struct usb_alt_interface *)addr; 1632 err = usbd_device2interface_handle(sc->sc_udev, 1633 ai->uai_interface_index, &iface); 1634 if (err) 1635 return (EINVAL); 1636 idesc = usbd_get_interface_descriptor(iface); 1637 if (idesc == NULL) 1638 return (EIO); 1639 ai->uai_alt_no = idesc->bAlternateSetting; 1640 break; 1641 case USB_SET_ALTINTERFACE: 1642 if (!(flag & FWRITE)) 1643 return (EPERM); 1644 ai = (struct usb_alt_interface *)addr; 1645 err = usbd_device2interface_handle(sc->sc_udev, 1646 ai->uai_interface_index, &iface); 1647 if (err) 1648 return (EINVAL); 1649 err = ugen_set_interface(sc, ai->uai_interface_index, 1650 ai->uai_alt_no); 1651 if (err) 1652 return (EINVAL); 1653 break; 1654 case USB_GET_NO_ALT: 1655 ai = (struct usb_alt_interface *)addr; 1656 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, 0); 1657 if (cdesc == NULL) 1658 return (EINVAL); 1659 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1660 if (idesc == NULL) { 1661 free(cdesc, M_TEMP); 1662 return (EINVAL); 1663 } 1664 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1665 idesc->bInterfaceNumber); 1666 free(cdesc, M_TEMP); 1667 break; 1668 case USB_GET_DEVICE_DESC: 1669 *(usb_device_descriptor_t *)addr = 1670 *usbd_get_device_descriptor(sc->sc_udev); 1671 break; 1672 case USB_GET_CONFIG_DESC: 1673 cd = (struct usb_config_desc *)addr; 1674 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, 0); 1675 if (cdesc == NULL) 1676 return (EINVAL); 1677 cd->ucd_desc = *cdesc; 1678 free(cdesc, M_TEMP); 1679 break; 1680 case USB_GET_INTERFACE_DESC: 1681 id = (struct usb_interface_desc *)addr; 1682 cdesc = ugen_get_cdesc(sc, id->uid_config_index, 0); 1683 if (cdesc == NULL) 1684 return (EINVAL); 1685 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1686 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1687 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1688 else 1689 alt = id->uid_alt_index; 1690 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1691 if (idesc == NULL) { 1692 free(cdesc, M_TEMP); 1693 return (EINVAL); 1694 } 1695 id->uid_desc = *idesc; 1696 free(cdesc, M_TEMP); 1697 break; 1698 case USB_GET_ENDPOINT_DESC: 1699 ed = (struct usb_endpoint_desc *)addr; 1700 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, 0); 1701 if (cdesc == NULL) 1702 return (EINVAL); 1703 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1704 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1705 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1706 else 1707 alt = ed->ued_alt_index; 1708 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1709 alt, ed->ued_endpoint_index); 1710 if (edesc == NULL) { 1711 free(cdesc, M_TEMP); 1712 return (EINVAL); 1713 } 1714 ed->ued_desc = *edesc; 1715 free(cdesc, M_TEMP); 1716 break; 1717 case USB_GET_FULL_DESC: 1718 { 1719 int len; 1720 struct iovec iov; 1721 struct uio uio; 1722 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1723 int error; 1724 1725 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &len); 1726 if (len > fd->ufd_size) 1727 len = fd->ufd_size; 1728 iov.iov_base = (void *)fd->ufd_data; 1729 iov.iov_len = len; 1730 uio.uio_iov = &iov; 1731 uio.uio_iovcnt = 1; 1732 uio.uio_resid = len; 1733 uio.uio_offset = 0; 1734 uio.uio_rw = UIO_READ; 1735 uio.uio_vmspace = l->l_proc->p_vmspace; 1736 error = uiomove((void *)cdesc, len, &uio); 1737 free(cdesc, M_TEMP); 1738 return (error); 1739 } 1740 case USB_GET_STRING_DESC: { 1741 int len; 1742 si = (struct usb_string_desc *)addr; 1743 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1744 si->usd_language_id, &si->usd_desc, &len); 1745 if (err) 1746 return (EINVAL); 1747 break; 1748 } 1749 case USB_DO_REQUEST: 1750 { 1751 struct usb_ctl_request *ur = (void *)addr; 1752 int len = UGETW(ur->ucr_request.wLength); 1753 struct iovec iov; 1754 struct uio uio; 1755 void *ptr = 0; 1756 usbd_status xerr; 1757 int error = 0; 1758 1759 if (!(flag & FWRITE)) 1760 return (EPERM); 1761 /* Avoid requests that would damage the bus integrity. */ 1762 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1763 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1764 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1765 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1766 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1767 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1768 return (EINVAL); 1769 1770 if (len < 0 || len > 32767) 1771 return (EINVAL); 1772 if (len != 0) { 1773 iov.iov_base = (void *)ur->ucr_data; 1774 iov.iov_len = len; 1775 uio.uio_iov = &iov; 1776 uio.uio_iovcnt = 1; 1777 uio.uio_resid = len; 1778 uio.uio_offset = 0; 1779 uio.uio_rw = 1780 ur->ucr_request.bmRequestType & UT_READ ? 1781 UIO_READ : UIO_WRITE; 1782 uio.uio_vmspace = l->l_proc->p_vmspace; 1783 ptr = malloc(len, M_TEMP, M_WAITOK); 1784 if (uio.uio_rw == UIO_WRITE) { 1785 error = uiomove(ptr, len, &uio); 1786 if (error) 1787 goto ret; 1788 } 1789 } 1790 sce = &sc->sc_endpoints[endpt][IN]; 1791 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1792 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1793 if (xerr) { 1794 error = EIO; 1795 goto ret; 1796 } 1797 if (len != 0) { 1798 if (uio.uio_rw == UIO_READ) { 1799 error = uiomove(ptr, len, &uio); 1800 if (error) 1801 goto ret; 1802 } 1803 } 1804 ret: 1805 if (ptr) 1806 free(ptr, M_TEMP); 1807 return (error); 1808 } 1809 case USB_GET_DEVICEINFO: 1810 usbd_fill_deviceinfo(sc->sc_udev, 1811 (struct usb_device_info *)addr, 0); 1812 break; 1813 #ifdef COMPAT_30 1814 case USB_GET_DEVICEINFO_OLD: 1815 usbd_fill_deviceinfo_old(sc->sc_udev, 1816 (struct usb_device_info_old *)addr, 0); 1817 1818 break; 1819 #endif 1820 default: 1821 return (EINVAL); 1822 } 1823 return (0); 1824 } 1825 1826 int 1827 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1828 { 1829 int endpt = UGENENDPOINT(dev); 1830 struct ugen_softc *sc; 1831 int error; 1832 1833 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1834 1835 sc->sc_refcnt++; 1836 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1837 if (--sc->sc_refcnt < 0) 1838 usb_detach_wakeup(USBDEV(sc->sc_dev)); 1839 return (error); 1840 } 1841 1842 int 1843 ugenpoll(dev_t dev, int events, struct lwp *l) 1844 { 1845 struct ugen_softc *sc; 1846 struct ugen_endpoint *sce_in, *sce_out; 1847 int revents = 0; 1848 int s; 1849 1850 USB_GET_SC(ugen, UGENUNIT(dev), sc); 1851 1852 if (sc->sc_dying) 1853 return (POLLHUP); 1854 1855 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1856 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1857 if (sce_in == NULL && sce_out == NULL) 1858 return (POLLERR); 1859 #ifdef DIAGNOSTIC 1860 if (!sce_in->edesc && !sce_out->edesc) { 1861 printf("ugenpoll: no edesc\n"); 1862 return (POLLERR); 1863 } 1864 /* It's possible to have only one pipe open. */ 1865 if (!sce_in->pipeh && !sce_out->pipeh) { 1866 printf("ugenpoll: no pipe\n"); 1867 return (POLLERR); 1868 } 1869 #endif 1870 s = splusb(); 1871 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1872 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1873 case UE_INTERRUPT: 1874 if (sce_in->q.c_cc > 0) 1875 revents |= events & (POLLIN | POLLRDNORM); 1876 else 1877 selrecord(l, &sce_in->rsel); 1878 break; 1879 case UE_ISOCHRONOUS: 1880 if (sce_in->cur != sce_in->fill) 1881 revents |= events & (POLLIN | POLLRDNORM); 1882 else 1883 selrecord(l, &sce_in->rsel); 1884 break; 1885 case UE_BULK: 1886 #ifdef UGEN_BULK_RA_WB 1887 if (sce_in->state & UGEN_BULK_RA) { 1888 if (sce_in->ra_wb_used > 0) 1889 revents |= events & 1890 (POLLIN | POLLRDNORM); 1891 else 1892 selrecord(l, &sce_in->rsel); 1893 break; 1894 } 1895 #endif 1896 /* 1897 * We have no easy way of determining if a read will 1898 * yield any data or a write will happen. 1899 * Pretend they will. 1900 */ 1901 revents |= events & (POLLIN | POLLRDNORM); 1902 break; 1903 default: 1904 break; 1905 } 1906 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1907 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1908 case UE_INTERRUPT: 1909 case UE_ISOCHRONOUS: 1910 /* XXX unimplemented */ 1911 break; 1912 case UE_BULK: 1913 #ifdef UGEN_BULK_RA_WB 1914 if (sce_out->state & UGEN_BULK_WB) { 1915 if (sce_out->ra_wb_used < 1916 sce_out->limit - sce_out->ibuf) 1917 revents |= events & 1918 (POLLOUT | POLLWRNORM); 1919 else 1920 selrecord(l, &sce_out->rsel); 1921 break; 1922 } 1923 #endif 1924 /* 1925 * We have no easy way of determining if a read will 1926 * yield any data or a write will happen. 1927 * Pretend they will. 1928 */ 1929 revents |= events & (POLLOUT | POLLWRNORM); 1930 break; 1931 default: 1932 break; 1933 } 1934 1935 1936 splx(s); 1937 return (revents); 1938 } 1939 1940 static void 1941 filt_ugenrdetach(struct knote *kn) 1942 { 1943 struct ugen_endpoint *sce = kn->kn_hook; 1944 int s; 1945 1946 s = splusb(); 1947 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 1948 splx(s); 1949 } 1950 1951 static int 1952 filt_ugenread_intr(struct knote *kn, long hint) 1953 { 1954 struct ugen_endpoint *sce = kn->kn_hook; 1955 1956 kn->kn_data = sce->q.c_cc; 1957 return (kn->kn_data > 0); 1958 } 1959 1960 static int 1961 filt_ugenread_isoc(struct knote *kn, long hint) 1962 { 1963 struct ugen_endpoint *sce = kn->kn_hook; 1964 1965 if (sce->cur == sce->fill) 1966 return (0); 1967 1968 if (sce->cur < sce->fill) 1969 kn->kn_data = sce->fill - sce->cur; 1970 else 1971 kn->kn_data = (sce->limit - sce->cur) + 1972 (sce->fill - sce->ibuf); 1973 1974 return (1); 1975 } 1976 1977 #ifdef UGEN_BULK_RA_WB 1978 static int 1979 filt_ugenread_bulk(struct knote *kn, long hint) 1980 { 1981 struct ugen_endpoint *sce = kn->kn_hook; 1982 1983 if (!(sce->state & UGEN_BULK_RA)) 1984 /* 1985 * We have no easy way of determining if a read will 1986 * yield any data or a write will happen. 1987 * So, emulate "seltrue". 1988 */ 1989 return (filt_seltrue(kn, hint)); 1990 1991 if (sce->ra_wb_used == 0) 1992 return (0); 1993 1994 kn->kn_data = sce->ra_wb_used; 1995 1996 return (1); 1997 } 1998 1999 static int 2000 filt_ugenwrite_bulk(struct knote *kn, long hint) 2001 { 2002 struct ugen_endpoint *sce = kn->kn_hook; 2003 2004 if (!(sce->state & UGEN_BULK_WB)) 2005 /* 2006 * We have no easy way of determining if a read will 2007 * yield any data or a write will happen. 2008 * So, emulate "seltrue". 2009 */ 2010 return (filt_seltrue(kn, hint)); 2011 2012 if (sce->ra_wb_used == sce->limit - sce->ibuf) 2013 return (0); 2014 2015 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2016 2017 return (1); 2018 } 2019 #endif 2020 2021 static const struct filterops ugenread_intr_filtops = 2022 { 1, NULL, filt_ugenrdetach, filt_ugenread_intr }; 2023 2024 static const struct filterops ugenread_isoc_filtops = 2025 { 1, NULL, filt_ugenrdetach, filt_ugenread_isoc }; 2026 2027 #ifdef UGEN_BULK_RA_WB 2028 static const struct filterops ugenread_bulk_filtops = 2029 { 1, NULL, filt_ugenrdetach, filt_ugenread_bulk }; 2030 2031 static const struct filterops ugenwrite_bulk_filtops = 2032 { 1, NULL, filt_ugenrdetach, filt_ugenwrite_bulk }; 2033 #else 2034 static const struct filterops ugen_seltrue_filtops = 2035 { 1, NULL, filt_ugenrdetach, filt_seltrue }; 2036 #endif 2037 2038 int 2039 ugenkqfilter(dev_t dev, struct knote *kn) 2040 { 2041 struct ugen_softc *sc; 2042 struct ugen_endpoint *sce; 2043 struct klist *klist; 2044 int s; 2045 2046 USB_GET_SC(ugen, UGENUNIT(dev), sc); 2047 2048 if (sc->sc_dying) 2049 return (ENXIO); 2050 2051 switch (kn->kn_filter) { 2052 case EVFILT_READ: 2053 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2054 if (sce == NULL) 2055 return (EINVAL); 2056 2057 klist = &sce->rsel.sel_klist; 2058 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2059 case UE_INTERRUPT: 2060 kn->kn_fop = &ugenread_intr_filtops; 2061 break; 2062 case UE_ISOCHRONOUS: 2063 kn->kn_fop = &ugenread_isoc_filtops; 2064 break; 2065 case UE_BULK: 2066 #ifdef UGEN_BULK_RA_WB 2067 kn->kn_fop = &ugenread_bulk_filtops; 2068 break; 2069 #else 2070 /* 2071 * We have no easy way of determining if a read will 2072 * yield any data or a write will happen. 2073 * So, emulate "seltrue". 2074 */ 2075 kn->kn_fop = &ugen_seltrue_filtops; 2076 #endif 2077 break; 2078 default: 2079 return (EINVAL); 2080 } 2081 break; 2082 2083 case EVFILT_WRITE: 2084 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2085 if (sce == NULL) 2086 return (EINVAL); 2087 2088 klist = &sce->rsel.sel_klist; 2089 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2090 case UE_INTERRUPT: 2091 case UE_ISOCHRONOUS: 2092 /* XXX poll doesn't support this */ 2093 return (EINVAL); 2094 2095 case UE_BULK: 2096 #ifdef UGEN_BULK_RA_WB 2097 kn->kn_fop = &ugenwrite_bulk_filtops; 2098 #else 2099 /* 2100 * We have no easy way of determining if a read will 2101 * yield any data or a write will happen. 2102 * So, emulate "seltrue". 2103 */ 2104 kn->kn_fop = &ugen_seltrue_filtops; 2105 #endif 2106 break; 2107 default: 2108 return (EINVAL); 2109 } 2110 break; 2111 2112 default: 2113 return (EINVAL); 2114 } 2115 2116 kn->kn_hook = sce; 2117 2118 s = splusb(); 2119 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2120 splx(s); 2121 2122 return (0); 2123 } 2124 2125 #if defined(__FreeBSD__) 2126 DRIVER_MODULE(ugen, uhub, ugen_driver, ugen_devclass, usbd_driver_load, 0); 2127 #endif 2128
Indexes created Thu Sep 25 16:09:42 GMT 2025