ugen.c revision 1.163
1 /* $NetBSD: ugen.c,v 1.163 2021/09/07 10:43:11 riastradh Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Copyright (c) 2006 BBN Technologies Corp. All rights reserved. 12 * Effort sponsored in part by the Defense Advanced Research Projects 13 * Agency (DARPA) and the Department of the Interior National Business 14 * Center under agreement number NBCHC050166. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.163 2021/09/07 10:43:11 riastradh Exp $"); 41 42 #ifdef _KERNEL_OPT 43 #include "opt_compat_netbsd.h" 44 #include "opt_usb.h" 45 #endif 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/kmem.h> 51 #include <sys/device.h> 52 #include <sys/ioctl.h> 53 #include <sys/conf.h> 54 #include <sys/tty.h> 55 #include <sys/file.h> 56 #include <sys/select.h> 57 #include <sys/proc.h> 58 #include <sys/vnode.h> 59 #include <sys/poll.h> 60 #include <sys/compat_stub.h> 61 #include <sys/module.h> 62 #include <sys/rbtree.h> 63 64 #include <dev/usb/usb.h> 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 68 #include "ioconf.h" 69 70 #ifdef UGEN_DEBUG 71 #define DPRINTF(x) if (ugendebug) printf x 72 #define DPRINTFN(n,x) if (ugendebug>(n)) printf x 73 int ugendebug = 0; 74 #else 75 #define DPRINTF(x) 76 #define DPRINTFN(n,x) 77 #endif 78 79 #define UGEN_CHUNK 128 /* chunk size for read */ 80 #define UGEN_IBSIZE 1020 /* buffer size */ 81 #define UGEN_BBSIZE 1024 82 83 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 84 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 85 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 86 87 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 88 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 89 90 struct isoreq { 91 struct ugen_endpoint *sce; 92 struct usbd_xfer *xfer; 93 void *dmabuf; 94 uint16_t sizes[UGEN_NISORFRMS]; 95 }; 96 97 struct ugen_endpoint { 98 struct ugen_softc *sc; 99 usb_endpoint_descriptor_t *edesc; 100 struct usbd_interface *iface; 101 int state; 102 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 103 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 104 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 105 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 106 struct usbd_pipe *pipeh; 107 struct clist q; 108 u_char *ibuf; /* start of buffer (circular for isoc) */ 109 u_char *fill; /* location for input (isoc) */ 110 u_char *limit; /* end of circular buffer (isoc) */ 111 u_char *cur; /* current read location (isoc) */ 112 uint32_t timeout; 113 uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 114 uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 115 uint32_t ra_wb_used; /* how much is in buffer */ 116 uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 117 struct usbd_xfer *ra_wb_xfer; 118 struct isoreq isoreqs[UGEN_NISOREQS]; 119 /* Keep these last; we don't overwrite them in ugen_set_config() */ 120 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 121 struct selinfo rsel; 122 kcondvar_t cv; 123 }; 124 125 struct ugen_softc { 126 device_t sc_dev; /* base device */ 127 struct usbd_device *sc_udev; 128 struct rb_node sc_node; 129 unsigned sc_unit; 130 131 kmutex_t sc_lock; 132 kcondvar_t sc_detach_cv; 133 134 char sc_is_open[USB_MAX_ENDPOINTS]; 135 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 136 #define OUT 0 137 #define IN 1 138 139 int sc_refcnt; 140 char sc_buffer[UGEN_BBSIZE]; 141 u_char sc_dying; 142 u_char sc_attached; 143 }; 144 145 static struct { 146 kmutex_t lock; 147 rb_tree_t tree; 148 } ugenif __cacheline_aligned; 149 150 static int 151 compare_ugen(void *cookie, const void *vsca, const void *vscb) 152 { 153 const struct ugen_softc *sca = vsca; 154 const struct ugen_softc *scb = vscb; 155 156 if (sca->sc_unit < scb->sc_unit) 157 return -1; 158 if (sca->sc_unit > scb->sc_unit) 159 return +1; 160 return 0; 161 } 162 163 static int 164 compare_ugen_key(void *cookie, const void *vsc, const void *vk) 165 { 166 const struct ugen_softc *sc = vsc; 167 const unsigned *k = vk; 168 169 if (sc->sc_unit < *k) 170 return -1; 171 if (sc->sc_unit > *k) 172 return +1; 173 return 0; 174 } 175 176 static const rb_tree_ops_t ugenif_tree_ops = { 177 .rbto_compare_nodes = compare_ugen, 178 .rbto_compare_key = compare_ugen_key, 179 .rbto_node_offset = offsetof(struct ugen_softc, sc_node), 180 }; 181 182 static void 183 ugenif_get_unit(struct ugen_softc *sc) 184 { 185 struct ugen_softc *sc0; 186 unsigned i; 187 188 mutex_enter(&ugenif.lock); 189 for (i = 0, sc0 = RB_TREE_MIN(&ugenif.tree); 190 sc0 != NULL && i == sc0->sc_unit; 191 i++, sc0 = RB_TREE_NEXT(&ugenif.tree, sc0)) 192 KASSERT(i < UINT_MAX); 193 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == NULL); 194 sc->sc_unit = i; 195 sc0 = rb_tree_insert_node(&ugenif.tree, sc); 196 KASSERT(sc0 == sc); 197 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == sc); 198 mutex_exit(&ugenif.lock); 199 } 200 201 static void 202 ugenif_put_unit(struct ugen_softc *sc) 203 { 204 205 mutex_enter(&ugenif.lock); 206 KASSERT(rb_tree_find_node(&ugenif.tree, &sc->sc_unit) == sc); 207 rb_tree_remove_node(&ugenif.tree, sc); 208 sc->sc_unit = -1; 209 mutex_exit(&ugenif.lock); 210 } 211 212 static struct ugen_softc * 213 ugenif_acquire(unsigned unit) 214 { 215 struct ugen_softc *sc; 216 217 mutex_enter(&ugenif.lock); 218 sc = rb_tree_find_node(&ugenif.tree, &unit); 219 if (sc == NULL) 220 goto out; 221 mutex_enter(&sc->sc_lock); 222 if (sc->sc_dying) { 223 mutex_exit(&sc->sc_lock); 224 sc = NULL; 225 goto out; 226 } 227 KASSERT(sc->sc_refcnt < INT_MAX); 228 sc->sc_refcnt++; 229 mutex_exit(&sc->sc_lock); 230 out: mutex_exit(&ugenif.lock); 231 232 return sc; 233 } 234 235 static void 236 ugenif_release(struct ugen_softc *sc) 237 { 238 239 mutex_enter(&sc->sc_lock); 240 if (--sc->sc_refcnt < 0) 241 cv_broadcast(&sc->sc_detach_cv); 242 mutex_exit(&sc->sc_lock); 243 } 244 245 static dev_type_open(ugenopen); 246 static dev_type_close(ugenclose); 247 static dev_type_read(ugenread); 248 static dev_type_write(ugenwrite); 249 static dev_type_ioctl(ugenioctl); 250 static dev_type_poll(ugenpoll); 251 static dev_type_kqfilter(ugenkqfilter); 252 253 const struct cdevsw ugen_cdevsw = { 254 .d_open = ugenopen, 255 .d_close = ugenclose, 256 .d_read = ugenread, 257 .d_write = ugenwrite, 258 .d_ioctl = ugenioctl, 259 .d_stop = nostop, 260 .d_tty = notty, 261 .d_poll = ugenpoll, 262 .d_mmap = nommap, 263 .d_kqfilter = ugenkqfilter, 264 .d_discard = nodiscard, 265 .d_flag = D_OTHER, 266 }; 267 268 Static void ugenintr(struct usbd_xfer *, void *, 269 usbd_status); 270 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 271 usbd_status); 272 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 273 usbd_status); 274 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 275 usbd_status); 276 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 277 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 278 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 279 void *, int, struct lwp *); 280 Static int ugen_set_config(struct ugen_softc *, int, int); 281 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 282 int, int *); 283 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 284 Static int ugen_get_alt_index(struct ugen_softc *, int); 285 Static void ugen_clear_endpoints(struct ugen_softc *); 286 287 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 288 #define UGENENDPOINT(n) (minor(n) & 0xf) 289 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 290 291 static int ugenif_match(device_t, cfdata_t, void *); 292 static void ugenif_attach(device_t, device_t, void *); 293 static int ugen_match(device_t, cfdata_t, void *); 294 static void ugen_attach(device_t, device_t, void *); 295 static int ugen_detach(device_t, int); 296 static int ugen_activate(device_t, enum devact); 297 298 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 299 ugen_attach, ugen_detach, ugen_activate); 300 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 301 ugenif_attach, ugen_detach, ugen_activate); 302 303 /* toggle to control attach priority. -1 means "let autoconf decide" */ 304 int ugen_override = -1; 305 306 static int 307 ugen_match(device_t parent, cfdata_t match, void *aux) 308 { 309 struct usb_attach_arg *uaa = aux; 310 int override; 311 312 if (ugen_override != -1) 313 override = ugen_override; 314 else 315 override = match->cf_flags & 1; 316 317 if (override) 318 return UMATCH_HIGHEST; 319 else if (uaa->uaa_usegeneric) 320 return UMATCH_GENERIC; 321 else 322 return UMATCH_NONE; 323 } 324 325 static int 326 ugenif_match(device_t parent, cfdata_t match, void *aux) 327 { 328 /* Assume that they knew what they configured! (see ugenif(4)) */ 329 return UMATCH_HIGHEST; 330 } 331 332 static void 333 ugen_attach(device_t parent, device_t self, void *aux) 334 { 335 struct usb_attach_arg *uaa = aux; 336 struct usbif_attach_arg uiaa; 337 338 memset(&uiaa, 0, sizeof(uiaa)); 339 uiaa.uiaa_port = uaa->uaa_port; 340 uiaa.uiaa_vendor = uaa->uaa_vendor; 341 uiaa.uiaa_product = uaa->uaa_product; 342 uiaa.uiaa_release = uaa->uaa_release; 343 uiaa.uiaa_device = uaa->uaa_device; 344 uiaa.uiaa_configno = -1; 345 uiaa.uiaa_ifaceno = -1; 346 347 ugenif_attach(parent, self, &uiaa); 348 } 349 350 static void 351 ugenif_attach(device_t parent, device_t self, void *aux) 352 { 353 struct ugen_softc *sc = device_private(self); 354 struct usbif_attach_arg *uiaa = aux; 355 struct usbd_device *udev; 356 char *devinfop; 357 usbd_status err; 358 int i, dir, conf; 359 360 aprint_naive("\n"); 361 aprint_normal("\n"); 362 363 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 364 cv_init(&sc->sc_detach_cv, "ugendet"); 365 366 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 367 aprint_normal_dev(self, "%s\n", devinfop); 368 usbd_devinfo_free(devinfop); 369 370 sc->sc_dev = self; 371 sc->sc_udev = udev = uiaa->uiaa_device; 372 373 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 374 for (dir = OUT; dir <= IN; dir++) { 375 struct ugen_endpoint *sce; 376 377 sce = &sc->sc_endpoints[i][dir]; 378 selinit(&sce->rsel); 379 cv_init(&sce->cv, "ugensce"); 380 } 381 } 382 383 if (!pmf_device_register(self, NULL, NULL)) 384 aprint_error_dev(self, "couldn't establish power handler\n"); 385 386 if (uiaa->uiaa_ifaceno < 0) { 387 /* 388 * If we attach the whole device, 389 * set configuration index 0, the default one. 390 */ 391 err = usbd_set_config_index(udev, 0, 0); 392 if (err) { 393 aprint_error_dev(self, 394 "setting configuration index 0 failed\n"); 395 return; 396 } 397 } 398 399 /* Get current configuration */ 400 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 401 402 /* Set up all the local state for this configuration. */ 403 err = ugen_set_config(sc, conf, uiaa->uiaa_ifaceno < 0); 404 if (err) { 405 aprint_error_dev(self, "setting configuration %d failed\n", 406 conf); 407 return; 408 } 409 410 ugenif_get_unit(sc); 411 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 412 sc->sc_attached = 1; 413 } 414 415 Static void 416 ugen_clear_endpoints(struct ugen_softc *sc) 417 { 418 419 /* Clear out the old info, but leave the selinfo and cv initialised. */ 420 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 421 for (int dir = OUT; dir <= IN; dir++) { 422 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 423 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 424 } 425 } 426 } 427 428 Static int 429 ugen_set_config(struct ugen_softc *sc, int configno, int chkopen) 430 { 431 struct usbd_device *dev = sc->sc_udev; 432 usb_config_descriptor_t *cdesc; 433 struct usbd_interface *iface; 434 usb_endpoint_descriptor_t *ed; 435 struct ugen_endpoint *sce; 436 uint8_t niface, nendpt; 437 int ifaceno, endptno, endpt; 438 usbd_status err; 439 int dir; 440 441 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 442 device_xname(sc->sc_dev), configno, sc)); 443 444 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 445 446 if (chkopen) { 447 /* 448 * We start at 1, not 0, because we don't care whether the 449 * control endpoint is open or not. It is always present. 450 */ 451 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 452 if (sc->sc_is_open[endptno]) { 453 DPRINTFN(1, 454 ("ugen_set_config: %s - endpoint %d is open\n", 455 device_xname(sc->sc_dev), endptno)); 456 return USBD_IN_USE; 457 } 458 459 /* Prevent opening while we're setting the config. */ 460 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) { 461 KASSERT(!sc->sc_is_open[endptno]); 462 sc->sc_is_open[endptno] = 1; 463 } 464 } 465 466 /* Avoid setting the current value. */ 467 cdesc = usbd_get_config_descriptor(dev); 468 if (!cdesc || cdesc->bConfigurationValue != configno) { 469 err = usbd_set_config_no(dev, configno, 1); 470 if (err) 471 goto out; 472 } 473 474 ugen_clear_endpoints(sc); 475 476 err = usbd_interface_count(dev, &niface); 477 if (err) 478 goto out; 479 480 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 481 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 482 err = usbd_device2interface_handle(dev, ifaceno, &iface); 483 if (err) 484 goto out; 485 err = usbd_endpoint_count(iface, &nendpt); 486 if (err) 487 goto out; 488 for (endptno = 0; endptno < nendpt; endptno++) { 489 ed = usbd_interface2endpoint_descriptor(iface,endptno); 490 KASSERT(ed != NULL); 491 endpt = ed->bEndpointAddress; 492 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 493 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 494 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 495 "(%d,%d), sce=%p\n", 496 endptno, endpt, UE_GET_ADDR(endpt), 497 UE_GET_DIR(endpt), sce)); 498 sce->sc = sc; 499 sce->edesc = ed; 500 sce->iface = iface; 501 } 502 } 503 err = USBD_NORMAL_COMPLETION; 504 505 out: if (chkopen) { 506 /* 507 * Allow open again now that we're done trying to set 508 * the config. 509 */ 510 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) { 511 KASSERT(sc->sc_is_open[endptno]); 512 sc->sc_is_open[endptno] = 0; 513 } 514 } 515 return err; 516 } 517 518 static int 519 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 520 { 521 struct ugen_softc *sc; 522 int unit = UGENUNIT(dev); 523 int endpt = UGENENDPOINT(dev); 524 usb_endpoint_descriptor_t *edesc; 525 struct ugen_endpoint *sce; 526 int dir, isize; 527 usbd_status err; 528 struct usbd_xfer *xfer; 529 int i, j; 530 int error; 531 int opened; 532 533 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 534 535 if ((sc = ugenif_acquire(unit)) == NULL) 536 return ENXIO; 537 538 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 539 flag, mode, unit, endpt)); 540 541 /* The control endpoint allows multiple opens. */ 542 if (endpt == USB_CONTROL_ENDPOINT) { 543 opened = sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 544 error = 0; 545 goto out; 546 } 547 548 if (sc->sc_is_open[endpt]) { 549 error = EBUSY; 550 goto out; 551 } 552 opened = sc->sc_is_open[endpt] = 1; 553 554 /* Make sure there are pipes for all directions. */ 555 for (dir = OUT; dir <= IN; dir++) { 556 if (flag & (dir == OUT ? FWRITE : FREAD)) { 557 sce = &sc->sc_endpoints[endpt][dir]; 558 if (sce->edesc == NULL) { 559 error = ENXIO; 560 goto out; 561 } 562 } 563 } 564 565 /* Actually open the pipes. */ 566 /* XXX Should back out properly if it fails. */ 567 for (dir = OUT; dir <= IN; dir++) { 568 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 569 continue; 570 sce = &sc->sc_endpoints[endpt][dir]; 571 sce->state = 0; 572 sce->timeout = USBD_NO_TIMEOUT; 573 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 574 sc, endpt, dir, sce)); 575 edesc = sce->edesc; 576 switch (edesc->bmAttributes & UE_XFERTYPE) { 577 case UE_INTERRUPT: 578 if (dir == OUT) { 579 err = usbd_open_pipe(sce->iface, 580 edesc->bEndpointAddress, 0, &sce->pipeh); 581 if (err) { 582 error = EIO; 583 goto out; 584 } 585 break; 586 } 587 isize = UGETW(edesc->wMaxPacketSize); 588 if (isize == 0) { /* shouldn't happen */ 589 error = EINVAL; 590 goto out; 591 } 592 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 593 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 594 endpt, isize)); 595 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 596 kmem_free(sce->ibuf, isize); 597 sce->ibuf = NULL; 598 error = ENOMEM; 599 goto out; 600 } 601 err = usbd_open_pipe_intr(sce->iface, 602 edesc->bEndpointAddress, 603 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 604 sce->ibuf, isize, ugenintr, 605 USBD_DEFAULT_INTERVAL); 606 if (err) { 607 clfree(&sce->q); 608 kmem_free(sce->ibuf, isize); 609 sce->ibuf = NULL; 610 error = EIO; 611 goto out; 612 } 613 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 614 break; 615 case UE_BULK: 616 err = usbd_open_pipe(sce->iface, 617 edesc->bEndpointAddress, 0, &sce->pipeh); 618 if (err) { 619 error = EIO; 620 goto out; 621 } 622 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 623 /* 624 * Use request size for non-RA/WB transfers 625 * as the default. 626 */ 627 sce->ra_wb_reqsize = UGEN_BBSIZE; 628 break; 629 case UE_ISOCHRONOUS: 630 if (dir == OUT) { 631 error = EINVAL; 632 goto out; 633 } 634 isize = UGETW(edesc->wMaxPacketSize); 635 if (isize == 0) { /* shouldn't happen */ 636 error = EINVAL; 637 goto out; 638 } 639 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 640 KM_SLEEP); 641 sce->cur = sce->fill = sce->ibuf; 642 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 643 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 644 endpt, isize)); 645 err = usbd_open_pipe(sce->iface, 646 edesc->bEndpointAddress, 0, &sce->pipeh); 647 if (err) { 648 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 649 sce->ibuf = NULL; 650 error = EIO; 651 goto out; 652 } 653 for (i = 0; i < UGEN_NISOREQS; ++i) { 654 sce->isoreqs[i].sce = sce; 655 err = usbd_create_xfer(sce->pipeh, 656 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 657 &xfer); 658 if (err) 659 goto bad; 660 sce->isoreqs[i].xfer = xfer; 661 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 662 for (j = 0; j < UGEN_NISORFRMS; ++j) 663 sce->isoreqs[i].sizes[j] = isize; 664 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 665 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 666 ugen_isoc_rintr); 667 (void)usbd_transfer(xfer); 668 } 669 DPRINTFN(5, ("ugenopen: isoc open done\n")); 670 break; 671 bad: 672 while (--i >= 0) /* implicit buffer free */ 673 usbd_destroy_xfer(sce->isoreqs[i].xfer); 674 usbd_close_pipe(sce->pipeh); 675 sce->pipeh = NULL; 676 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 677 sce->ibuf = NULL; 678 error = ENOMEM; 679 goto out; 680 case UE_CONTROL: 681 sce->timeout = USBD_DEFAULT_TIMEOUT; 682 error = EINVAL; 683 goto out; 684 } 685 } 686 error = 0; 687 out: if (error && opened) 688 sc->sc_is_open[endpt] = 0; 689 ugenif_release(sc); 690 return error; 691 } 692 693 static void 694 ugen_do_close(struct ugen_softc *sc, int flag, int endpt) 695 { 696 struct ugen_endpoint *sce; 697 int dir; 698 int i; 699 700 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 701 702 if (!sc->sc_is_open[endpt]) { 703 KASSERT(sc->sc_endpoints[endpt][IN].pipeh == NULL); 704 KASSERT(sc->sc_endpoints[endpt][OUT].pipeh == NULL); 705 KASSERT(sc->sc_endpoints[endpt][IN].ibuf == NULL); 706 KASSERT(sc->sc_endpoints[endpt][OUT].ibuf == NULL); 707 return; 708 } 709 710 if (endpt == USB_CONTROL_ENDPOINT) { 711 DPRINTFN(5, ("ugenclose: close control\n")); 712 goto out; 713 } 714 715 for (dir = OUT; dir <= IN; dir++) { 716 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 717 continue; 718 sce = &sc->sc_endpoints[endpt][dir]; 719 if (sce->pipeh == NULL) 720 continue; 721 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 722 endpt, dir, sce)); 723 724 usbd_abort_pipe(sce->pipeh); 725 726 int isize = UGETW(sce->edesc->wMaxPacketSize); 727 int msize = 0; 728 729 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 730 case UE_INTERRUPT: 731 ndflush(&sce->q, sce->q.c_cc); 732 clfree(&sce->q); 733 msize = isize; 734 break; 735 case UE_ISOCHRONOUS: 736 for (i = 0; i < UGEN_NISOREQS; ++i) 737 usbd_destroy_xfer(sce->isoreqs[i].xfer); 738 msize = isize * UGEN_NISOFRAMES; 739 break; 740 case UE_BULK: 741 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 742 usbd_destroy_xfer(sce->ra_wb_xfer); 743 msize = sce->ra_wb_bufsize; 744 } 745 break; 746 default: 747 break; 748 } 749 usbd_close_pipe(sce->pipeh); 750 sce->pipeh = NULL; 751 if (sce->ibuf != NULL) { 752 kmem_free(sce->ibuf, msize); 753 sce->ibuf = NULL; 754 } 755 } 756 757 out: sc->sc_is_open[endpt] = 0; 758 } 759 760 static int 761 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 762 { 763 int endpt = UGENENDPOINT(dev); 764 struct ugen_softc *sc; 765 766 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 767 flag, mode, UGENUNIT(dev), endpt)); 768 769 KASSERT(KERNEL_LOCKED_P()); /* ugen_do_close */ 770 771 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 772 return ENXIO; 773 774 KASSERT(sc->sc_is_open[endpt]); 775 ugen_do_close(sc, flag, endpt); 776 KASSERT(!sc->sc_is_open[endpt]); 777 778 ugenif_release(sc); 779 780 return 0; 781 } 782 783 Static int 784 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 785 { 786 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 787 uint32_t n, tn; 788 struct usbd_xfer *xfer; 789 usbd_status err; 790 int error = 0; 791 792 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 793 794 if (endpt == USB_CONTROL_ENDPOINT) 795 return ENODEV; 796 797 KASSERT(sce->edesc); 798 KASSERT(sce->pipeh); 799 800 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 801 case UE_INTERRUPT: 802 /* Block until activity occurred. */ 803 mutex_enter(&sc->sc_lock); 804 while (sce->q.c_cc == 0) { 805 if (flag & IO_NDELAY) { 806 mutex_exit(&sc->sc_lock); 807 return EWOULDBLOCK; 808 } 809 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 810 /* "ugenri" */ 811 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 812 mstohz(sce->timeout)); 813 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 814 if (sc->sc_dying) 815 error = EIO; 816 if (error) 817 break; 818 } 819 mutex_exit(&sc->sc_lock); 820 821 /* Transfer as many chunks as possible. */ 822 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 823 n = uimin(sce->q.c_cc, uio->uio_resid); 824 if (n > sizeof(sc->sc_buffer)) 825 n = sizeof(sc->sc_buffer); 826 827 /* Remove a small chunk from the input queue. */ 828 q_to_b(&sce->q, sc->sc_buffer, n); 829 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 830 831 /* Copy the data to the user process. */ 832 error = uiomove(sc->sc_buffer, n, uio); 833 if (error) 834 break; 835 } 836 break; 837 case UE_BULK: 838 if (sce->state & UGEN_BULK_RA) { 839 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 840 uio->uio_resid, sce->ra_wb_used)); 841 xfer = sce->ra_wb_xfer; 842 843 mutex_enter(&sc->sc_lock); 844 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 845 mutex_exit(&sc->sc_lock); 846 return EWOULDBLOCK; 847 } 848 while (uio->uio_resid > 0 && !error) { 849 while (sce->ra_wb_used == 0) { 850 DPRINTFN(5, 851 ("ugenread: sleep on %p\n", 852 sce)); 853 /* "ugenrb" */ 854 error = cv_timedwait_sig(&sce->cv, 855 &sc->sc_lock, mstohz(sce->timeout)); 856 DPRINTFN(5, 857 ("ugenread: woke, error=%d\n", 858 error)); 859 if (sc->sc_dying) 860 error = EIO; 861 if (error) 862 break; 863 } 864 865 /* Copy data to the process. */ 866 while (uio->uio_resid > 0 867 && sce->ra_wb_used > 0) { 868 n = uimin(uio->uio_resid, 869 sce->ra_wb_used); 870 n = uimin(n, sce->limit - sce->cur); 871 error = uiomove(sce->cur, n, uio); 872 if (error) 873 break; 874 sce->cur += n; 875 sce->ra_wb_used -= n; 876 if (sce->cur == sce->limit) 877 sce->cur = sce->ibuf; 878 } 879 880 /* 881 * If the transfers stopped because the 882 * buffer was full, restart them. 883 */ 884 if (sce->state & UGEN_RA_WB_STOP && 885 sce->ra_wb_used < sce->limit - sce->ibuf) { 886 n = (sce->limit - sce->ibuf) 887 - sce->ra_wb_used; 888 usbd_setup_xfer(xfer, sce, NULL, 889 uimin(n, sce->ra_wb_xferlen), 890 0, USBD_NO_TIMEOUT, 891 ugen_bulkra_intr); 892 sce->state &= ~UGEN_RA_WB_STOP; 893 err = usbd_transfer(xfer); 894 if (err != USBD_IN_PROGRESS) 895 /* 896 * The transfer has not been 897 * queued. Setting STOP 898 * will make us try 899 * again at the next read. 900 */ 901 sce->state |= UGEN_RA_WB_STOP; 902 } 903 } 904 mutex_exit(&sc->sc_lock); 905 break; 906 } 907 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 908 0, 0, &xfer); 909 if (error) 910 return error; 911 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 912 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 913 tn = n; 914 err = usbd_bulk_transfer(xfer, sce->pipeh, 915 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 916 sce->timeout, sc->sc_buffer, &tn); 917 if (err) { 918 if (err == USBD_INTERRUPTED) 919 error = EINTR; 920 else if (err == USBD_TIMEOUT) 921 error = ETIMEDOUT; 922 else 923 error = EIO; 924 break; 925 } 926 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 927 error = uiomove(sc->sc_buffer, tn, uio); 928 if (error || tn < n) 929 break; 930 } 931 usbd_destroy_xfer(xfer); 932 break; 933 case UE_ISOCHRONOUS: 934 mutex_enter(&sc->sc_lock); 935 while (sce->cur == sce->fill) { 936 if (flag & IO_NDELAY) { 937 mutex_exit(&sc->sc_lock); 938 return EWOULDBLOCK; 939 } 940 /* "ugenri" */ 941 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 942 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 943 mstohz(sce->timeout)); 944 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 945 if (sc->sc_dying) 946 error = EIO; 947 if (error) 948 break; 949 } 950 951 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 952 if(sce->fill > sce->cur) 953 n = uimin(sce->fill - sce->cur, uio->uio_resid); 954 else 955 n = uimin(sce->limit - sce->cur, uio->uio_resid); 956 957 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 958 959 /* Copy the data to the user process. */ 960 error = uiomove(sce->cur, n, uio); 961 if (error) 962 break; 963 sce->cur += n; 964 if (sce->cur >= sce->limit) 965 sce->cur = sce->ibuf; 966 } 967 mutex_exit(&sc->sc_lock); 968 break; 969 970 971 default: 972 return ENXIO; 973 } 974 return error; 975 } 976 977 static int 978 ugenread(dev_t dev, struct uio *uio, int flag) 979 { 980 int endpt = UGENENDPOINT(dev); 981 struct ugen_softc *sc; 982 int error; 983 984 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 985 return ENXIO; 986 error = ugen_do_read(sc, endpt, uio, flag); 987 ugenif_release(sc); 988 989 return error; 990 } 991 992 Static int 993 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 994 int flag) 995 { 996 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 997 uint32_t n; 998 int error = 0; 999 uint32_t tn; 1000 char *dbuf; 1001 struct usbd_xfer *xfer; 1002 usbd_status err; 1003 1004 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 1005 1006 if (endpt == USB_CONTROL_ENDPOINT) 1007 return ENODEV; 1008 1009 KASSERT(sce->edesc); 1010 KASSERT(sce->pipeh); 1011 1012 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 1013 case UE_BULK: 1014 if (sce->state & UGEN_BULK_WB) { 1015 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 1016 uio->uio_resid, sce->ra_wb_used)); 1017 xfer = sce->ra_wb_xfer; 1018 1019 mutex_enter(&sc->sc_lock); 1020 if (sce->ra_wb_used == sce->limit - sce->ibuf && 1021 flag & IO_NDELAY) { 1022 mutex_exit(&sc->sc_lock); 1023 return EWOULDBLOCK; 1024 } 1025 while (uio->uio_resid > 0 && !error) { 1026 while (sce->ra_wb_used == 1027 sce->limit - sce->ibuf) { 1028 DPRINTFN(5, 1029 ("ugenwrite: sleep on %p\n", 1030 sce)); 1031 /* "ugenwb" */ 1032 error = cv_timedwait_sig(&sce->cv, 1033 &sc->sc_lock, mstohz(sce->timeout)); 1034 DPRINTFN(5, 1035 ("ugenwrite: woke, error=%d\n", 1036 error)); 1037 if (sc->sc_dying) 1038 error = EIO; 1039 if (error) 1040 break; 1041 } 1042 1043 /* Copy data from the process. */ 1044 while (uio->uio_resid > 0 && 1045 sce->ra_wb_used < sce->limit - sce->ibuf) { 1046 n = uimin(uio->uio_resid, 1047 (sce->limit - sce->ibuf) 1048 - sce->ra_wb_used); 1049 n = uimin(n, sce->limit - sce->fill); 1050 error = uiomove(sce->fill, n, uio); 1051 if (error) 1052 break; 1053 sce->fill += n; 1054 sce->ra_wb_used += n; 1055 if (sce->fill == sce->limit) 1056 sce->fill = sce->ibuf; 1057 } 1058 1059 /* 1060 * If the transfers stopped because the 1061 * buffer was empty, restart them. 1062 */ 1063 if (sce->state & UGEN_RA_WB_STOP && 1064 sce->ra_wb_used > 0) { 1065 dbuf = (char *)usbd_get_buffer(xfer); 1066 n = uimin(sce->ra_wb_used, 1067 sce->ra_wb_xferlen); 1068 tn = uimin(n, sce->limit - sce->cur); 1069 memcpy(dbuf, sce->cur, tn); 1070 dbuf += tn; 1071 if (n - tn > 0) 1072 memcpy(dbuf, sce->ibuf, 1073 n - tn); 1074 usbd_setup_xfer(xfer, sce, NULL, n, 1075 0, USBD_NO_TIMEOUT, 1076 ugen_bulkwb_intr); 1077 sce->state &= ~UGEN_RA_WB_STOP; 1078 err = usbd_transfer(xfer); 1079 if (err != USBD_IN_PROGRESS) 1080 /* 1081 * The transfer has not been 1082 * queued. Setting STOP 1083 * will make us try again 1084 * at the next read. 1085 */ 1086 sce->state |= UGEN_RA_WB_STOP; 1087 } 1088 } 1089 mutex_exit(&sc->sc_lock); 1090 break; 1091 } 1092 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 1093 0, 0, &xfer); 1094 if (error) 1095 return error; 1096 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 1097 error = uiomove(sc->sc_buffer, n, uio); 1098 if (error) 1099 break; 1100 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1101 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 1102 sc->sc_buffer, &n); 1103 if (err) { 1104 if (err == USBD_INTERRUPTED) 1105 error = EINTR; 1106 else if (err == USBD_TIMEOUT) 1107 error = ETIMEDOUT; 1108 else 1109 error = EIO; 1110 break; 1111 } 1112 } 1113 usbd_destroy_xfer(xfer); 1114 break; 1115 case UE_INTERRUPT: 1116 error = usbd_create_xfer(sce->pipeh, 1117 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 1118 if (error) 1119 return error; 1120 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 1121 uio->uio_resid)) != 0) { 1122 error = uiomove(sc->sc_buffer, n, uio); 1123 if (error) 1124 break; 1125 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1126 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 1127 sce->timeout, sc->sc_buffer, &n); 1128 if (err) { 1129 if (err == USBD_INTERRUPTED) 1130 error = EINTR; 1131 else if (err == USBD_TIMEOUT) 1132 error = ETIMEDOUT; 1133 else 1134 error = EIO; 1135 break; 1136 } 1137 } 1138 usbd_destroy_xfer(xfer); 1139 break; 1140 default: 1141 return ENXIO; 1142 } 1143 return error; 1144 } 1145 1146 static int 1147 ugenwrite(dev_t dev, struct uio *uio, int flag) 1148 { 1149 int endpt = UGENENDPOINT(dev); 1150 struct ugen_softc *sc; 1151 int error; 1152 1153 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1154 return ENXIO; 1155 error = ugen_do_write(sc, endpt, uio, flag); 1156 ugenif_release(sc); 1157 1158 return error; 1159 } 1160 1161 static int 1162 ugen_activate(device_t self, enum devact act) 1163 { 1164 struct ugen_softc *sc = device_private(self); 1165 1166 switch (act) { 1167 case DVACT_DEACTIVATE: 1168 sc->sc_dying = 1; 1169 return 0; 1170 default: 1171 return EOPNOTSUPP; 1172 } 1173 } 1174 1175 static int 1176 ugen_detach(device_t self, int flags) 1177 { 1178 struct ugen_softc *sc = device_private(self); 1179 struct ugen_endpoint *sce; 1180 int i, dir; 1181 int maj, mn; 1182 1183 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1184 1185 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 1186 1187 /* 1188 * Fail if we're not forced to detach and userland has any 1189 * endpoints open. 1190 */ 1191 if ((flags & DETACH_FORCE) == 0) { 1192 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1193 if (sc->sc_is_open[i]) 1194 return EBUSY; 1195 } 1196 } 1197 1198 /* Prevent new users. Prevent suspend/resume. */ 1199 sc->sc_dying = 1; 1200 pmf_device_deregister(self); 1201 1202 /* 1203 * If we never finished attaching, skip nixing endpoints and 1204 * users because there aren't any. 1205 */ 1206 if (!sc->sc_attached) 1207 goto out; 1208 1209 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1210 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1211 for (dir = OUT; dir <= IN; dir++) { 1212 sce = &sc->sc_endpoints[i][dir]; 1213 if (sce->pipeh) 1214 usbd_abort_pipe(sce->pipeh); 1215 } 1216 } 1217 1218 mutex_enter(&sc->sc_lock); 1219 if (--sc->sc_refcnt >= 0) { 1220 /* Wake everyone */ 1221 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1222 cv_signal(&sc->sc_endpoints[i][IN].cv); 1223 /* Wait for processes to go away. */ 1224 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1225 aprint_error_dev(self, ": didn't detach\n"); 1226 } 1227 mutex_exit(&sc->sc_lock); 1228 1229 /* locate the major number */ 1230 maj = cdevsw_lookup_major(&ugen_cdevsw); 1231 1232 /* 1233 * Nuke the vnodes for any open instances (calls ugenclose, but 1234 * with no effect because we already set sc_dying). 1235 */ 1236 mn = sc->sc_unit * USB_MAX_ENDPOINTS; 1237 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1238 1239 /* Actually close any lingering pipes. */ 1240 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1241 ugen_do_close(sc, FREAD|FWRITE, i); 1242 1243 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1244 ugenif_put_unit(sc); 1245 1246 out: for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1247 for (dir = OUT; dir <= IN; dir++) { 1248 sce = &sc->sc_endpoints[i][dir]; 1249 seldestroy(&sce->rsel); 1250 cv_destroy(&sce->cv); 1251 } 1252 } 1253 1254 cv_destroy(&sc->sc_detach_cv); 1255 mutex_destroy(&sc->sc_lock); 1256 1257 return 0; 1258 } 1259 1260 Static void 1261 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1262 { 1263 struct ugen_endpoint *sce = addr; 1264 struct ugen_softc *sc = sce->sc; 1265 uint32_t count; 1266 u_char *ibuf; 1267 1268 if (status == USBD_CANCELLED) 1269 return; 1270 1271 if (status != USBD_NORMAL_COMPLETION) { 1272 DPRINTF(("ugenintr: status=%d\n", status)); 1273 if (status == USBD_STALLED) 1274 usbd_clear_endpoint_stall_async(sce->pipeh); 1275 return; 1276 } 1277 1278 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1279 ibuf = sce->ibuf; 1280 1281 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1282 xfer, status, count)); 1283 DPRINTFN(5, (" data = %02x %02x %02x\n", 1284 ibuf[0], ibuf[1], ibuf[2])); 1285 1286 mutex_enter(&sc->sc_lock); 1287 (void)b_to_q(ibuf, count, &sce->q); 1288 cv_signal(&sce->cv); 1289 mutex_exit(&sc->sc_lock); 1290 selnotify(&sce->rsel, 0, 0); 1291 } 1292 1293 Static void 1294 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1295 usbd_status status) 1296 { 1297 struct isoreq *req = addr; 1298 struct ugen_endpoint *sce = req->sce; 1299 struct ugen_softc *sc = sce->sc; 1300 uint32_t count, n; 1301 int i, isize; 1302 1303 /* Return if we are aborting. */ 1304 if (status == USBD_CANCELLED) 1305 return; 1306 1307 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1308 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1309 (long)(req - sce->isoreqs), count)); 1310 1311 mutex_enter(&sc->sc_lock); 1312 1313 /* throw away oldest input if the buffer is full */ 1314 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1315 sce->cur += count; 1316 if (sce->cur >= sce->limit) 1317 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1318 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1319 count)); 1320 } 1321 1322 isize = UGETW(sce->edesc->wMaxPacketSize); 1323 for (i = 0; i < UGEN_NISORFRMS; i++) { 1324 uint32_t actlen = req->sizes[i]; 1325 char const *tbuf = (char const *)req->dmabuf + isize * i; 1326 1327 /* copy data to buffer */ 1328 while (actlen > 0) { 1329 n = uimin(actlen, sce->limit - sce->fill); 1330 memcpy(sce->fill, tbuf, n); 1331 1332 tbuf += n; 1333 actlen -= n; 1334 sce->fill += n; 1335 if (sce->fill == sce->limit) 1336 sce->fill = sce->ibuf; 1337 } 1338 1339 /* setup size for next transfer */ 1340 req->sizes[i] = isize; 1341 } 1342 1343 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1344 ugen_isoc_rintr); 1345 (void)usbd_transfer(xfer); 1346 1347 cv_signal(&sce->cv); 1348 mutex_exit(&sc->sc_lock); 1349 selnotify(&sce->rsel, 0, 0); 1350 } 1351 1352 Static void 1353 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1354 usbd_status status) 1355 { 1356 struct ugen_endpoint *sce = addr; 1357 struct ugen_softc *sc = sce->sc; 1358 uint32_t count, n; 1359 char const *tbuf; 1360 usbd_status err; 1361 1362 /* Return if we are aborting. */ 1363 if (status == USBD_CANCELLED) 1364 return; 1365 1366 if (status != USBD_NORMAL_COMPLETION) { 1367 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1368 sce->state |= UGEN_RA_WB_STOP; 1369 if (status == USBD_STALLED) 1370 usbd_clear_endpoint_stall_async(sce->pipeh); 1371 return; 1372 } 1373 1374 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1375 1376 mutex_enter(&sc->sc_lock); 1377 1378 /* Keep track of how much is in the buffer. */ 1379 sce->ra_wb_used += count; 1380 1381 /* Copy data to buffer. */ 1382 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1383 n = uimin(count, sce->limit - sce->fill); 1384 memcpy(sce->fill, tbuf, n); 1385 tbuf += n; 1386 count -= n; 1387 sce->fill += n; 1388 if (sce->fill == sce->limit) 1389 sce->fill = sce->ibuf; 1390 if (count > 0) { 1391 memcpy(sce->fill, tbuf, count); 1392 sce->fill += count; 1393 } 1394 1395 /* Set up the next request if necessary. */ 1396 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1397 if (n > 0) { 1398 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1399 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1400 err = usbd_transfer(xfer); 1401 if (err != USBD_IN_PROGRESS) { 1402 printf("usbd_bulkra_intr: error=%d\n", err); 1403 /* 1404 * The transfer has not been queued. Setting STOP 1405 * will make us try again at the next read. 1406 */ 1407 sce->state |= UGEN_RA_WB_STOP; 1408 } 1409 } 1410 else 1411 sce->state |= UGEN_RA_WB_STOP; 1412 1413 cv_signal(&sce->cv); 1414 mutex_exit(&sc->sc_lock); 1415 selnotify(&sce->rsel, 0, 0); 1416 } 1417 1418 Static void 1419 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1420 usbd_status status) 1421 { 1422 struct ugen_endpoint *sce = addr; 1423 struct ugen_softc *sc = sce->sc; 1424 uint32_t count, n; 1425 char *tbuf; 1426 usbd_status err; 1427 1428 /* Return if we are aborting. */ 1429 if (status == USBD_CANCELLED) 1430 return; 1431 1432 if (status != USBD_NORMAL_COMPLETION) { 1433 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1434 sce->state |= UGEN_RA_WB_STOP; 1435 if (status == USBD_STALLED) 1436 usbd_clear_endpoint_stall_async(sce->pipeh); 1437 return; 1438 } 1439 1440 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1441 1442 mutex_enter(&sc->sc_lock); 1443 1444 /* Keep track of how much is in the buffer. */ 1445 sce->ra_wb_used -= count; 1446 1447 /* Update buffer pointers. */ 1448 sce->cur += count; 1449 if (sce->cur >= sce->limit) 1450 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1451 1452 /* Set up next request if necessary. */ 1453 if (sce->ra_wb_used > 0) { 1454 /* copy data from buffer */ 1455 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1456 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1457 n = uimin(count, sce->limit - sce->cur); 1458 memcpy(tbuf, sce->cur, n); 1459 tbuf += n; 1460 if (count - n > 0) 1461 memcpy(tbuf, sce->ibuf, count - n); 1462 1463 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1464 ugen_bulkwb_intr); 1465 err = usbd_transfer(xfer); 1466 if (err != USBD_IN_PROGRESS) { 1467 printf("usbd_bulkwb_intr: error=%d\n", err); 1468 /* 1469 * The transfer has not been queued. Setting STOP 1470 * will make us try again at the next write. 1471 */ 1472 sce->state |= UGEN_RA_WB_STOP; 1473 } 1474 } 1475 else 1476 sce->state |= UGEN_RA_WB_STOP; 1477 1478 cv_signal(&sce->cv); 1479 mutex_exit(&sc->sc_lock); 1480 selnotify(&sce->rsel, 0, 0); 1481 } 1482 1483 Static usbd_status 1484 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1485 { 1486 struct usbd_interface *iface; 1487 usb_endpoint_descriptor_t *ed; 1488 usbd_status err; 1489 struct ugen_endpoint *sce; 1490 uint8_t niface, nendpt, endptno, endpt; 1491 int dir; 1492 1493 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1494 1495 err = usbd_interface_count(sc->sc_udev, &niface); 1496 if (err) 1497 return err; 1498 if (ifaceidx < 0 || ifaceidx >= niface) 1499 return USBD_INVAL; 1500 1501 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1502 if (err) 1503 return err; 1504 err = usbd_endpoint_count(iface, &nendpt); 1505 if (err) 1506 return err; 1507 1508 /* change setting */ 1509 err = usbd_set_interface(iface, altno); 1510 if (err) 1511 return err; 1512 1513 err = usbd_endpoint_count(iface, &nendpt); 1514 if (err) 1515 return err; 1516 1517 ugen_clear_endpoints(sc); 1518 1519 for (endptno = 0; endptno < nendpt; endptno++) { 1520 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1521 KASSERT(ed != NULL); 1522 endpt = ed->bEndpointAddress; 1523 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1524 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1525 sce->sc = sc; 1526 sce->edesc = ed; 1527 sce->iface = iface; 1528 } 1529 return 0; 1530 } 1531 1532 /* Retrieve a complete descriptor for a certain device and index. */ 1533 Static usb_config_descriptor_t * 1534 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1535 { 1536 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1537 int len; 1538 usbd_status err; 1539 1540 if (index == USB_CURRENT_CONFIG_INDEX) { 1541 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1542 if (tdesc == NULL) 1543 return NULL; 1544 len = UGETW(tdesc->wTotalLength); 1545 if (lenp) 1546 *lenp = len; 1547 cdesc = kmem_alloc(len, KM_SLEEP); 1548 memcpy(cdesc, tdesc, len); 1549 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1550 } else { 1551 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1552 if (err) 1553 return 0; 1554 len = UGETW(cdescr.wTotalLength); 1555 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1556 if (lenp) 1557 *lenp = len; 1558 cdesc = kmem_alloc(len, KM_SLEEP); 1559 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1560 if (err) { 1561 kmem_free(cdesc, len); 1562 return 0; 1563 } 1564 } 1565 return cdesc; 1566 } 1567 1568 Static int 1569 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1570 { 1571 struct usbd_interface *iface; 1572 usbd_status err; 1573 1574 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1575 if (err) 1576 return -1; 1577 return usbd_get_interface_altindex(iface); 1578 } 1579 1580 Static int 1581 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1582 void *addr, int flag, struct lwp *l) 1583 { 1584 struct ugen_endpoint *sce; 1585 usbd_status err; 1586 struct usbd_interface *iface; 1587 struct usb_config_desc *cd; 1588 usb_config_descriptor_t *cdesc; 1589 struct usb_interface_desc *id; 1590 usb_interface_descriptor_t *idesc; 1591 struct usb_endpoint_desc *ed; 1592 usb_endpoint_descriptor_t *edesc; 1593 struct usb_alt_interface *ai; 1594 struct usb_string_desc *si; 1595 uint8_t conf, alt; 1596 int cdesclen; 1597 int error; 1598 int dir; 1599 1600 KASSERT(KERNEL_LOCKED_P()); /* ugen_set_config */ 1601 1602 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1603 1604 switch (cmd) { 1605 case FIONBIO: 1606 /* All handled in the upper FS layer. */ 1607 return 0; 1608 case USB_SET_SHORT_XFER: 1609 if (endpt == USB_CONTROL_ENDPOINT) 1610 return EINVAL; 1611 /* This flag only affects read */ 1612 sce = &sc->sc_endpoints[endpt][IN]; 1613 if (sce == NULL || sce->pipeh == NULL) 1614 return EINVAL; 1615 if (*(int *)addr) 1616 sce->state |= UGEN_SHORT_OK; 1617 else 1618 sce->state &= ~UGEN_SHORT_OK; 1619 return 0; 1620 case USB_SET_TIMEOUT: 1621 for (dir = OUT; dir <= IN; dir++) { 1622 sce = &sc->sc_endpoints[endpt][dir]; 1623 if (sce == NULL) 1624 return EINVAL; 1625 1626 sce->timeout = *(int *)addr; 1627 } 1628 return 0; 1629 case USB_SET_BULK_RA: 1630 if (endpt == USB_CONTROL_ENDPOINT) 1631 return EINVAL; 1632 sce = &sc->sc_endpoints[endpt][IN]; 1633 if (sce == NULL || sce->pipeh == NULL) 1634 return EINVAL; 1635 edesc = sce->edesc; 1636 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1637 return EINVAL; 1638 1639 if (*(int *)addr) { 1640 /* Only turn RA on if it's currently off. */ 1641 if (sce->state & UGEN_BULK_RA) 1642 return 0; 1643 1644 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1645 /* shouldn't happen */ 1646 return EINVAL; 1647 error = usbd_create_xfer(sce->pipeh, 1648 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1649 if (error) 1650 return error; 1651 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1652 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1653 sce->fill = sce->cur = sce->ibuf; 1654 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1655 sce->ra_wb_used = 0; 1656 sce->state |= UGEN_BULK_RA; 1657 sce->state &= ~UGEN_RA_WB_STOP; 1658 /* Now start reading. */ 1659 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1660 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1661 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1662 err = usbd_transfer(sce->ra_wb_xfer); 1663 if (err != USBD_IN_PROGRESS) { 1664 sce->state &= ~UGEN_BULK_RA; 1665 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1666 sce->ibuf = NULL; 1667 usbd_destroy_xfer(sce->ra_wb_xfer); 1668 return EIO; 1669 } 1670 } else { 1671 /* Only turn RA off if it's currently on. */ 1672 if (!(sce->state & UGEN_BULK_RA)) 1673 return 0; 1674 1675 sce->state &= ~UGEN_BULK_RA; 1676 usbd_abort_pipe(sce->pipeh); 1677 usbd_destroy_xfer(sce->ra_wb_xfer); 1678 /* 1679 * XXX Discard whatever's in the buffer, but we 1680 * should keep it around and drain the buffer 1681 * instead. 1682 */ 1683 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1684 sce->ibuf = NULL; 1685 } 1686 return 0; 1687 case USB_SET_BULK_WB: 1688 if (endpt == USB_CONTROL_ENDPOINT) 1689 return EINVAL; 1690 sce = &sc->sc_endpoints[endpt][OUT]; 1691 if (sce == NULL || sce->pipeh == NULL) 1692 return EINVAL; 1693 edesc = sce->edesc; 1694 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1695 return EINVAL; 1696 1697 if (*(int *)addr) { 1698 /* Only turn WB on if it's currently off. */ 1699 if (sce->state & UGEN_BULK_WB) 1700 return 0; 1701 1702 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1703 /* shouldn't happen */ 1704 return EINVAL; 1705 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1706 0, 0, &sce->ra_wb_xfer); 1707 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1708 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1709 sce->fill = sce->cur = sce->ibuf; 1710 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1711 sce->ra_wb_used = 0; 1712 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1713 } else { 1714 /* Only turn WB off if it's currently on. */ 1715 if (!(sce->state & UGEN_BULK_WB)) 1716 return 0; 1717 1718 sce->state &= ~UGEN_BULK_WB; 1719 /* 1720 * XXX Discard whatever's in the buffer, but we 1721 * should keep it around and keep writing to 1722 * drain the buffer instead. 1723 */ 1724 usbd_abort_pipe(sce->pipeh); 1725 usbd_destroy_xfer(sce->ra_wb_xfer); 1726 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1727 sce->ibuf = NULL; 1728 } 1729 return 0; 1730 case USB_SET_BULK_RA_OPT: 1731 case USB_SET_BULK_WB_OPT: 1732 { 1733 struct usb_bulk_ra_wb_opt *opt; 1734 1735 if (endpt == USB_CONTROL_ENDPOINT) 1736 return EINVAL; 1737 opt = (struct usb_bulk_ra_wb_opt *)addr; 1738 if (cmd == USB_SET_BULK_RA_OPT) 1739 sce = &sc->sc_endpoints[endpt][IN]; 1740 else 1741 sce = &sc->sc_endpoints[endpt][OUT]; 1742 if (sce == NULL || sce->pipeh == NULL) 1743 return EINVAL; 1744 if (opt->ra_wb_buffer_size < 1 || 1745 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1746 opt->ra_wb_request_size < 1 || 1747 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1748 return EINVAL; 1749 /* 1750 * XXX These changes do not take effect until the 1751 * next time RA/WB mode is enabled but they ought to 1752 * take effect immediately. 1753 */ 1754 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1755 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1756 return 0; 1757 } 1758 default: 1759 break; 1760 } 1761 1762 if (endpt != USB_CONTROL_ENDPOINT) 1763 return EINVAL; 1764 1765 switch (cmd) { 1766 #ifdef UGEN_DEBUG 1767 case USB_SETDEBUG: 1768 ugendebug = *(int *)addr; 1769 break; 1770 #endif 1771 case USB_GET_CONFIG: 1772 err = usbd_get_config(sc->sc_udev, &conf); 1773 if (err) 1774 return EIO; 1775 *(int *)addr = conf; 1776 break; 1777 case USB_SET_CONFIG: 1778 if (!(flag & FWRITE)) 1779 return EPERM; 1780 err = ugen_set_config(sc, *(int *)addr, 1); 1781 switch (err) { 1782 case USBD_NORMAL_COMPLETION: 1783 break; 1784 case USBD_IN_USE: 1785 return EBUSY; 1786 default: 1787 return EIO; 1788 } 1789 break; 1790 case USB_GET_ALTINTERFACE: 1791 ai = (struct usb_alt_interface *)addr; 1792 err = usbd_device2interface_handle(sc->sc_udev, 1793 ai->uai_interface_index, &iface); 1794 if (err) 1795 return EINVAL; 1796 idesc = usbd_get_interface_descriptor(iface); 1797 if (idesc == NULL) 1798 return EIO; 1799 ai->uai_alt_no = idesc->bAlternateSetting; 1800 break; 1801 case USB_SET_ALTINTERFACE: 1802 if (!(flag & FWRITE)) 1803 return EPERM; 1804 ai = (struct usb_alt_interface *)addr; 1805 err = usbd_device2interface_handle(sc->sc_udev, 1806 ai->uai_interface_index, &iface); 1807 if (err) 1808 return EINVAL; 1809 err = ugen_set_interface(sc, ai->uai_interface_index, 1810 ai->uai_alt_no); 1811 if (err) 1812 return EINVAL; 1813 break; 1814 case USB_GET_NO_ALT: 1815 ai = (struct usb_alt_interface *)addr; 1816 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1817 if (cdesc == NULL) 1818 return EINVAL; 1819 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1820 if (idesc == NULL) { 1821 kmem_free(cdesc, cdesclen); 1822 return EINVAL; 1823 } 1824 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1825 idesc->bInterfaceNumber); 1826 kmem_free(cdesc, cdesclen); 1827 break; 1828 case USB_GET_DEVICE_DESC: 1829 *(usb_device_descriptor_t *)addr = 1830 *usbd_get_device_descriptor(sc->sc_udev); 1831 break; 1832 case USB_GET_CONFIG_DESC: 1833 cd = (struct usb_config_desc *)addr; 1834 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1835 if (cdesc == NULL) 1836 return EINVAL; 1837 cd->ucd_desc = *cdesc; 1838 kmem_free(cdesc, cdesclen); 1839 break; 1840 case USB_GET_INTERFACE_DESC: 1841 id = (struct usb_interface_desc *)addr; 1842 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1843 if (cdesc == NULL) 1844 return EINVAL; 1845 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1846 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1847 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1848 else 1849 alt = id->uid_alt_index; 1850 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1851 if (idesc == NULL) { 1852 kmem_free(cdesc, cdesclen); 1853 return EINVAL; 1854 } 1855 id->uid_desc = *idesc; 1856 kmem_free(cdesc, cdesclen); 1857 break; 1858 case USB_GET_ENDPOINT_DESC: 1859 ed = (struct usb_endpoint_desc *)addr; 1860 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1861 if (cdesc == NULL) 1862 return EINVAL; 1863 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1864 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1865 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1866 else 1867 alt = ed->ued_alt_index; 1868 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1869 alt, ed->ued_endpoint_index); 1870 if (edesc == NULL) { 1871 kmem_free(cdesc, cdesclen); 1872 return EINVAL; 1873 } 1874 ed->ued_desc = *edesc; 1875 kmem_free(cdesc, cdesclen); 1876 break; 1877 case USB_GET_FULL_DESC: 1878 { 1879 int len; 1880 struct iovec iov; 1881 struct uio uio; 1882 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1883 1884 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1885 if (cdesc == NULL) 1886 return EINVAL; 1887 len = cdesclen; 1888 if (len > fd->ufd_size) 1889 len = fd->ufd_size; 1890 iov.iov_base = (void *)fd->ufd_data; 1891 iov.iov_len = len; 1892 uio.uio_iov = &iov; 1893 uio.uio_iovcnt = 1; 1894 uio.uio_resid = len; 1895 uio.uio_offset = 0; 1896 uio.uio_rw = UIO_READ; 1897 uio.uio_vmspace = l->l_proc->p_vmspace; 1898 error = uiomove((void *)cdesc, len, &uio); 1899 kmem_free(cdesc, cdesclen); 1900 return error; 1901 } 1902 case USB_GET_STRING_DESC: { 1903 int len; 1904 si = (struct usb_string_desc *)addr; 1905 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1906 si->usd_language_id, &si->usd_desc, &len); 1907 if (err) 1908 return EINVAL; 1909 break; 1910 } 1911 case USB_DO_REQUEST: 1912 { 1913 struct usb_ctl_request *ur = (void *)addr; 1914 int len = UGETW(ur->ucr_request.wLength); 1915 struct iovec iov; 1916 struct uio uio; 1917 void *ptr = 0; 1918 usbd_status xerr; 1919 1920 error = 0; 1921 1922 if (!(flag & FWRITE)) 1923 return EPERM; 1924 /* Avoid requests that would damage the bus integrity. */ 1925 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1926 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1927 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1928 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1929 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1930 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1931 return EINVAL; 1932 1933 if (len < 0 || len > 32767) 1934 return EINVAL; 1935 if (len != 0) { 1936 iov.iov_base = (void *)ur->ucr_data; 1937 iov.iov_len = len; 1938 uio.uio_iov = &iov; 1939 uio.uio_iovcnt = 1; 1940 uio.uio_resid = len; 1941 uio.uio_offset = 0; 1942 uio.uio_rw = 1943 ur->ucr_request.bmRequestType & UT_READ ? 1944 UIO_READ : UIO_WRITE; 1945 uio.uio_vmspace = l->l_proc->p_vmspace; 1946 ptr = kmem_alloc(len, KM_SLEEP); 1947 if (uio.uio_rw == UIO_WRITE) { 1948 error = uiomove(ptr, len, &uio); 1949 if (error) 1950 goto ret; 1951 } 1952 } 1953 sce = &sc->sc_endpoints[endpt][IN]; 1954 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1955 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1956 if (xerr) { 1957 error = EIO; 1958 goto ret; 1959 } 1960 if (len != 0) { 1961 if (uio.uio_rw == UIO_READ) { 1962 size_t alen = uimin(len, ur->ucr_actlen); 1963 error = uiomove(ptr, alen, &uio); 1964 if (error) 1965 goto ret; 1966 } 1967 } 1968 ret: 1969 if (ptr) 1970 kmem_free(ptr, len); 1971 return error; 1972 } 1973 case USB_GET_DEVICEINFO: 1974 usbd_fill_deviceinfo(sc->sc_udev, 1975 (struct usb_device_info *)addr, 0); 1976 break; 1977 case USB_GET_DEVICEINFO_OLD: 1978 { 1979 int ret; 1980 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1981 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1982 usbd_devinfo_vp, usbd_printBCD), 1983 enosys(), ret); 1984 if (ret == 0) 1985 return 0; 1986 return EINVAL; 1987 } 1988 default: 1989 return EINVAL; 1990 } 1991 return 0; 1992 } 1993 1994 static int 1995 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1996 { 1997 int endpt = UGENENDPOINT(dev); 1998 struct ugen_softc *sc; 1999 int error; 2000 2001 if ((sc = ugenif_acquire(UGENUNIT(dev))) == 0) 2002 return ENXIO; 2003 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 2004 ugenif_release(sc); 2005 2006 return error; 2007 } 2008 2009 static int 2010 ugenpoll(dev_t dev, int events, struct lwp *l) 2011 { 2012 struct ugen_softc *sc; 2013 struct ugen_endpoint *sce_in, *sce_out; 2014 int revents = 0; 2015 2016 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2017 return POLLHUP; 2018 2019 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2020 revents |= POLLERR; 2021 goto out; 2022 } 2023 2024 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2025 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2026 KASSERT(sce_in->edesc || sce_out->edesc); 2027 KASSERT(sce_in->pipeh || sce_out->pipeh); 2028 2029 mutex_enter(&sc->sc_lock); 2030 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 2031 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 2032 case UE_INTERRUPT: 2033 if (sce_in->q.c_cc > 0) 2034 revents |= events & (POLLIN | POLLRDNORM); 2035 else 2036 selrecord(l, &sce_in->rsel); 2037 break; 2038 case UE_ISOCHRONOUS: 2039 if (sce_in->cur != sce_in->fill) 2040 revents |= events & (POLLIN | POLLRDNORM); 2041 else 2042 selrecord(l, &sce_in->rsel); 2043 break; 2044 case UE_BULK: 2045 if (sce_in->state & UGEN_BULK_RA) { 2046 if (sce_in->ra_wb_used > 0) 2047 revents |= events & 2048 (POLLIN | POLLRDNORM); 2049 else 2050 selrecord(l, &sce_in->rsel); 2051 break; 2052 } 2053 /* 2054 * We have no easy way of determining if a read will 2055 * yield any data or a write will happen. 2056 * Pretend they will. 2057 */ 2058 revents |= events & (POLLIN | POLLRDNORM); 2059 break; 2060 default: 2061 break; 2062 } 2063 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 2064 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 2065 case UE_INTERRUPT: 2066 case UE_ISOCHRONOUS: 2067 /* XXX unimplemented */ 2068 break; 2069 case UE_BULK: 2070 if (sce_out->state & UGEN_BULK_WB) { 2071 if (sce_out->ra_wb_used < 2072 sce_out->limit - sce_out->ibuf) 2073 revents |= events & 2074 (POLLOUT | POLLWRNORM); 2075 else 2076 selrecord(l, &sce_out->rsel); 2077 break; 2078 } 2079 /* 2080 * We have no easy way of determining if a read will 2081 * yield any data or a write will happen. 2082 * Pretend they will. 2083 */ 2084 revents |= events & (POLLOUT | POLLWRNORM); 2085 break; 2086 default: 2087 break; 2088 } 2089 2090 mutex_exit(&sc->sc_lock); 2091 2092 out: ugenif_release(sc); 2093 return revents; 2094 } 2095 2096 static void 2097 filt_ugenrdetach(struct knote *kn) 2098 { 2099 struct ugen_endpoint *sce = kn->kn_hook; 2100 struct ugen_softc *sc = sce->sc; 2101 2102 mutex_enter(&sc->sc_lock); 2103 selremove_knote(&sce->rsel, kn); 2104 mutex_exit(&sc->sc_lock); 2105 } 2106 2107 static int 2108 filt_ugenread_intr(struct knote *kn, long hint) 2109 { 2110 struct ugen_endpoint *sce = kn->kn_hook; 2111 struct ugen_softc *sc = sce->sc; 2112 int ret; 2113 2114 mutex_enter(&sc->sc_lock); 2115 if (sc->sc_dying) { 2116 ret = 0; 2117 } else { 2118 kn->kn_data = sce->q.c_cc; 2119 ret = kn->kn_data > 0; 2120 } 2121 mutex_exit(&sc->sc_lock); 2122 2123 return ret; 2124 } 2125 2126 static int 2127 filt_ugenread_isoc(struct knote *kn, long hint) 2128 { 2129 struct ugen_endpoint *sce = kn->kn_hook; 2130 struct ugen_softc *sc = sce->sc; 2131 int ret; 2132 2133 mutex_enter(&sc->sc_lock); 2134 if (sc->sc_dying) { 2135 ret = 0; 2136 } else if (sce->cur == sce->fill) { 2137 ret = 0; 2138 } else if (sce->cur < sce->fill) { 2139 kn->kn_data = sce->fill - sce->cur; 2140 ret = 1; 2141 } else { 2142 kn->kn_data = (sce->limit - sce->cur) + 2143 (sce->fill - sce->ibuf); 2144 ret = 1; 2145 } 2146 mutex_exit(&sc->sc_lock); 2147 2148 return ret; 2149 } 2150 2151 static int 2152 filt_ugenread_bulk(struct knote *kn, long hint) 2153 { 2154 struct ugen_endpoint *sce = kn->kn_hook; 2155 struct ugen_softc *sc = sce->sc; 2156 int ret; 2157 2158 mutex_enter(&sc->sc_lock); 2159 if (sc->sc_dying) { 2160 ret = 0; 2161 } else if (!(sce->state & UGEN_BULK_RA)) { 2162 /* 2163 * We have no easy way of determining if a read will 2164 * yield any data or a write will happen. 2165 * So, emulate "seltrue". 2166 */ 2167 ret = filt_seltrue(kn, hint); 2168 } else if (sce->ra_wb_used == 0) { 2169 ret = 0; 2170 } else { 2171 kn->kn_data = sce->ra_wb_used; 2172 ret = 1; 2173 } 2174 mutex_exit(&sc->sc_lock); 2175 2176 return ret; 2177 } 2178 2179 static int 2180 filt_ugenwrite_bulk(struct knote *kn, long hint) 2181 { 2182 struct ugen_endpoint *sce = kn->kn_hook; 2183 struct ugen_softc *sc = sce->sc; 2184 int ret; 2185 2186 mutex_enter(&sc->sc_lock); 2187 if (sc->sc_dying) { 2188 ret = 0; 2189 } else if (!(sce->state & UGEN_BULK_WB)) { 2190 /* 2191 * We have no easy way of determining if a read will 2192 * yield any data or a write will happen. 2193 * So, emulate "seltrue". 2194 */ 2195 ret = filt_seltrue(kn, hint); 2196 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2197 ret = 0; 2198 } else { 2199 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2200 ret = 1; 2201 } 2202 mutex_exit(&sc->sc_lock); 2203 2204 return ret; 2205 } 2206 2207 static const struct filterops ugenread_intr_filtops = { 2208 .f_isfd = 1, 2209 .f_attach = NULL, 2210 .f_detach = filt_ugenrdetach, 2211 .f_event = filt_ugenread_intr, 2212 }; 2213 2214 static const struct filterops ugenread_isoc_filtops = { 2215 .f_isfd = 1, 2216 .f_attach = NULL, 2217 .f_detach = filt_ugenrdetach, 2218 .f_event = filt_ugenread_isoc, 2219 }; 2220 2221 static const struct filterops ugenread_bulk_filtops = { 2222 .f_isfd = 1, 2223 .f_attach = NULL, 2224 .f_detach = filt_ugenrdetach, 2225 .f_event = filt_ugenread_bulk, 2226 }; 2227 2228 static const struct filterops ugenwrite_bulk_filtops = { 2229 .f_isfd = 1, 2230 .f_attach = NULL, 2231 .f_detach = filt_ugenrdetach, 2232 .f_event = filt_ugenwrite_bulk, 2233 }; 2234 2235 static int 2236 ugenkqfilter(dev_t dev, struct knote *kn) 2237 { 2238 struct ugen_softc *sc; 2239 struct ugen_endpoint *sce; 2240 struct selinfo *sip; 2241 int error; 2242 2243 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2244 return ENXIO; 2245 2246 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2247 error = ENODEV; 2248 goto out; 2249 } 2250 2251 switch (kn->kn_filter) { 2252 case EVFILT_READ: 2253 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2254 if (sce == NULL) { 2255 error = EINVAL; 2256 goto out; 2257 } 2258 2259 sip = &sce->rsel; 2260 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2261 case UE_INTERRUPT: 2262 kn->kn_fop = &ugenread_intr_filtops; 2263 break; 2264 case UE_ISOCHRONOUS: 2265 kn->kn_fop = &ugenread_isoc_filtops; 2266 break; 2267 case UE_BULK: 2268 kn->kn_fop = &ugenread_bulk_filtops; 2269 break; 2270 default: 2271 error = EINVAL; 2272 goto out; 2273 } 2274 break; 2275 2276 case EVFILT_WRITE: 2277 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2278 if (sce == NULL) { 2279 error = EINVAL; 2280 goto out; 2281 } 2282 2283 sip = &sce->rsel; 2284 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2285 case UE_INTERRUPT: 2286 case UE_ISOCHRONOUS: 2287 /* XXX poll doesn't support this */ 2288 error = EINVAL; 2289 goto out; 2290 2291 case UE_BULK: 2292 kn->kn_fop = &ugenwrite_bulk_filtops; 2293 break; 2294 default: 2295 error = EINVAL; 2296 goto out; 2297 } 2298 break; 2299 2300 default: 2301 error = EINVAL; 2302 goto out; 2303 } 2304 2305 kn->kn_hook = sce; 2306 2307 mutex_enter(&sc->sc_lock); 2308 selrecord_knote(sip, kn); 2309 mutex_exit(&sc->sc_lock); 2310 2311 error = 0; 2312 2313 out: ugenif_release(sc); 2314 return error; 2315 } 2316 2317 MODULE(MODULE_CLASS_DRIVER, ugen, NULL); 2318 2319 static int 2320 ugen_modcmd(modcmd_t cmd, void *aux) 2321 { 2322 2323 switch (cmd) { 2324 case MODULE_CMD_INIT: 2325 mutex_init(&ugenif.lock, MUTEX_DEFAULT, IPL_NONE); 2326 rb_tree_init(&ugenif.tree, &ugenif_tree_ops); 2327 return 0; 2328 default: 2329 return ENOTTY; 2330 } 2331 } 2332
Indexes created Fri Sep 26 08:10:20 GMT 2025