ugen.c revision 1.165
1 /* $NetBSD: ugen.c,v 1.165 2021/09/07 10:43:34 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 1.165 2021/09/07 10:43:34 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. */ 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 for (dir = OUT; dir <= IN; dir++) 1223 cv_broadcast(&sc->sc_endpoints[i][dir].cv); 1224 } 1225 /* Wait for processes to go away. */ 1226 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1227 aprint_error_dev(self, ": didn't detach\n"); 1228 } 1229 mutex_exit(&sc->sc_lock); 1230 1231 /* locate the major number */ 1232 maj = cdevsw_lookup_major(&ugen_cdevsw); 1233 1234 /* 1235 * Nuke the vnodes for any open instances (calls ugenclose, but 1236 * with no effect because we already set sc_dying). 1237 */ 1238 mn = sc->sc_unit * USB_MAX_ENDPOINTS; 1239 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1240 1241 /* Actually close any lingering pipes. */ 1242 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1243 ugen_do_close(sc, FREAD|FWRITE, i); 1244 1245 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1246 ugenif_put_unit(sc); 1247 1248 out: for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1249 for (dir = OUT; dir <= IN; dir++) { 1250 sce = &sc->sc_endpoints[i][dir]; 1251 seldestroy(&sce->rsel); 1252 cv_destroy(&sce->cv); 1253 } 1254 } 1255 1256 cv_destroy(&sc->sc_detach_cv); 1257 mutex_destroy(&sc->sc_lock); 1258 1259 return 0; 1260 } 1261 1262 Static void 1263 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1264 { 1265 struct ugen_endpoint *sce = addr; 1266 struct ugen_softc *sc = sce->sc; 1267 uint32_t count; 1268 u_char *ibuf; 1269 1270 if (status == USBD_CANCELLED) 1271 return; 1272 1273 if (status != USBD_NORMAL_COMPLETION) { 1274 DPRINTF(("ugenintr: status=%d\n", status)); 1275 if (status == USBD_STALLED) 1276 usbd_clear_endpoint_stall_async(sce->pipeh); 1277 return; 1278 } 1279 1280 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1281 ibuf = sce->ibuf; 1282 1283 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1284 xfer, status, count)); 1285 DPRINTFN(5, (" data = %02x %02x %02x\n", 1286 ibuf[0], ibuf[1], ibuf[2])); 1287 1288 mutex_enter(&sc->sc_lock); 1289 (void)b_to_q(ibuf, count, &sce->q); 1290 cv_signal(&sce->cv); 1291 mutex_exit(&sc->sc_lock); 1292 selnotify(&sce->rsel, 0, 0); 1293 } 1294 1295 Static void 1296 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1297 usbd_status status) 1298 { 1299 struct isoreq *req = addr; 1300 struct ugen_endpoint *sce = req->sce; 1301 struct ugen_softc *sc = sce->sc; 1302 uint32_t count, n; 1303 int i, isize; 1304 1305 /* Return if we are aborting. */ 1306 if (status == USBD_CANCELLED) 1307 return; 1308 1309 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1310 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1311 (long)(req - sce->isoreqs), count)); 1312 1313 mutex_enter(&sc->sc_lock); 1314 1315 /* throw away oldest input if the buffer is full */ 1316 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1317 sce->cur += count; 1318 if (sce->cur >= sce->limit) 1319 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1320 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1321 count)); 1322 } 1323 1324 isize = UGETW(sce->edesc->wMaxPacketSize); 1325 for (i = 0; i < UGEN_NISORFRMS; i++) { 1326 uint32_t actlen = req->sizes[i]; 1327 char const *tbuf = (char const *)req->dmabuf + isize * i; 1328 1329 /* copy data to buffer */ 1330 while (actlen > 0) { 1331 n = uimin(actlen, sce->limit - sce->fill); 1332 memcpy(sce->fill, tbuf, n); 1333 1334 tbuf += n; 1335 actlen -= n; 1336 sce->fill += n; 1337 if (sce->fill == sce->limit) 1338 sce->fill = sce->ibuf; 1339 } 1340 1341 /* setup size for next transfer */ 1342 req->sizes[i] = isize; 1343 } 1344 1345 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1346 ugen_isoc_rintr); 1347 (void)usbd_transfer(xfer); 1348 1349 cv_signal(&sce->cv); 1350 mutex_exit(&sc->sc_lock); 1351 selnotify(&sce->rsel, 0, 0); 1352 } 1353 1354 Static void 1355 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1356 usbd_status status) 1357 { 1358 struct ugen_endpoint *sce = addr; 1359 struct ugen_softc *sc = sce->sc; 1360 uint32_t count, n; 1361 char const *tbuf; 1362 usbd_status err; 1363 1364 /* Return if we are aborting. */ 1365 if (status == USBD_CANCELLED) 1366 return; 1367 1368 if (status != USBD_NORMAL_COMPLETION) { 1369 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1370 sce->state |= UGEN_RA_WB_STOP; 1371 if (status == USBD_STALLED) 1372 usbd_clear_endpoint_stall_async(sce->pipeh); 1373 return; 1374 } 1375 1376 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1377 1378 mutex_enter(&sc->sc_lock); 1379 1380 /* Keep track of how much is in the buffer. */ 1381 sce->ra_wb_used += count; 1382 1383 /* Copy data to buffer. */ 1384 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1385 n = uimin(count, sce->limit - sce->fill); 1386 memcpy(sce->fill, tbuf, n); 1387 tbuf += n; 1388 count -= n; 1389 sce->fill += n; 1390 if (sce->fill == sce->limit) 1391 sce->fill = sce->ibuf; 1392 if (count > 0) { 1393 memcpy(sce->fill, tbuf, count); 1394 sce->fill += count; 1395 } 1396 1397 /* Set up the next request if necessary. */ 1398 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1399 if (n > 0) { 1400 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1401 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1402 err = usbd_transfer(xfer); 1403 if (err != USBD_IN_PROGRESS) { 1404 printf("usbd_bulkra_intr: error=%d\n", err); 1405 /* 1406 * The transfer has not been queued. Setting STOP 1407 * will make us try again at the next read. 1408 */ 1409 sce->state |= UGEN_RA_WB_STOP; 1410 } 1411 } 1412 else 1413 sce->state |= UGEN_RA_WB_STOP; 1414 1415 cv_signal(&sce->cv); 1416 mutex_exit(&sc->sc_lock); 1417 selnotify(&sce->rsel, 0, 0); 1418 } 1419 1420 Static void 1421 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1422 usbd_status status) 1423 { 1424 struct ugen_endpoint *sce = addr; 1425 struct ugen_softc *sc = sce->sc; 1426 uint32_t count, n; 1427 char *tbuf; 1428 usbd_status err; 1429 1430 /* Return if we are aborting. */ 1431 if (status == USBD_CANCELLED) 1432 return; 1433 1434 if (status != USBD_NORMAL_COMPLETION) { 1435 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1436 sce->state |= UGEN_RA_WB_STOP; 1437 if (status == USBD_STALLED) 1438 usbd_clear_endpoint_stall_async(sce->pipeh); 1439 return; 1440 } 1441 1442 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1443 1444 mutex_enter(&sc->sc_lock); 1445 1446 /* Keep track of how much is in the buffer. */ 1447 sce->ra_wb_used -= count; 1448 1449 /* Update buffer pointers. */ 1450 sce->cur += count; 1451 if (sce->cur >= sce->limit) 1452 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1453 1454 /* Set up next request if necessary. */ 1455 if (sce->ra_wb_used > 0) { 1456 /* copy data from buffer */ 1457 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1458 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1459 n = uimin(count, sce->limit - sce->cur); 1460 memcpy(tbuf, sce->cur, n); 1461 tbuf += n; 1462 if (count - n > 0) 1463 memcpy(tbuf, sce->ibuf, count - n); 1464 1465 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1466 ugen_bulkwb_intr); 1467 err = usbd_transfer(xfer); 1468 if (err != USBD_IN_PROGRESS) { 1469 printf("usbd_bulkwb_intr: error=%d\n", err); 1470 /* 1471 * The transfer has not been queued. Setting STOP 1472 * will make us try again at the next write. 1473 */ 1474 sce->state |= UGEN_RA_WB_STOP; 1475 } 1476 } 1477 else 1478 sce->state |= UGEN_RA_WB_STOP; 1479 1480 cv_signal(&sce->cv); 1481 mutex_exit(&sc->sc_lock); 1482 selnotify(&sce->rsel, 0, 0); 1483 } 1484 1485 Static usbd_status 1486 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1487 { 1488 struct usbd_interface *iface; 1489 usb_endpoint_descriptor_t *ed; 1490 usbd_status err; 1491 struct ugen_endpoint *sce; 1492 uint8_t niface, nendpt, endptno, endpt; 1493 int dir; 1494 1495 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1496 1497 err = usbd_interface_count(sc->sc_udev, &niface); 1498 if (err) 1499 return err; 1500 if (ifaceidx < 0 || ifaceidx >= niface) 1501 return USBD_INVAL; 1502 1503 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1504 if (err) 1505 return err; 1506 err = usbd_endpoint_count(iface, &nendpt); 1507 if (err) 1508 return err; 1509 1510 /* change setting */ 1511 err = usbd_set_interface(iface, altno); 1512 if (err) 1513 return err; 1514 1515 err = usbd_endpoint_count(iface, &nendpt); 1516 if (err) 1517 return err; 1518 1519 ugen_clear_endpoints(sc); 1520 1521 for (endptno = 0; endptno < nendpt; endptno++) { 1522 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1523 KASSERT(ed != NULL); 1524 endpt = ed->bEndpointAddress; 1525 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1526 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1527 sce->sc = sc; 1528 sce->edesc = ed; 1529 sce->iface = iface; 1530 } 1531 return 0; 1532 } 1533 1534 /* Retrieve a complete descriptor for a certain device and index. */ 1535 Static usb_config_descriptor_t * 1536 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1537 { 1538 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1539 int len; 1540 usbd_status err; 1541 1542 if (index == USB_CURRENT_CONFIG_INDEX) { 1543 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1544 if (tdesc == NULL) 1545 return NULL; 1546 len = UGETW(tdesc->wTotalLength); 1547 if (lenp) 1548 *lenp = len; 1549 cdesc = kmem_alloc(len, KM_SLEEP); 1550 memcpy(cdesc, tdesc, len); 1551 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1552 } else { 1553 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1554 if (err) 1555 return 0; 1556 len = UGETW(cdescr.wTotalLength); 1557 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1558 if (lenp) 1559 *lenp = len; 1560 cdesc = kmem_alloc(len, KM_SLEEP); 1561 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1562 if (err) { 1563 kmem_free(cdesc, len); 1564 return 0; 1565 } 1566 } 1567 return cdesc; 1568 } 1569 1570 Static int 1571 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1572 { 1573 struct usbd_interface *iface; 1574 usbd_status err; 1575 1576 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1577 if (err) 1578 return -1; 1579 return usbd_get_interface_altindex(iface); 1580 } 1581 1582 Static int 1583 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1584 void *addr, int flag, struct lwp *l) 1585 { 1586 struct ugen_endpoint *sce; 1587 usbd_status err; 1588 struct usbd_interface *iface; 1589 struct usb_config_desc *cd; 1590 usb_config_descriptor_t *cdesc; 1591 struct usb_interface_desc *id; 1592 usb_interface_descriptor_t *idesc; 1593 struct usb_endpoint_desc *ed; 1594 usb_endpoint_descriptor_t *edesc; 1595 struct usb_alt_interface *ai; 1596 struct usb_string_desc *si; 1597 uint8_t conf, alt; 1598 int cdesclen; 1599 int error; 1600 int dir; 1601 1602 KASSERT(KERNEL_LOCKED_P()); /* ugen_set_config */ 1603 1604 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1605 1606 switch (cmd) { 1607 case FIONBIO: 1608 /* All handled in the upper FS layer. */ 1609 return 0; 1610 case USB_SET_SHORT_XFER: 1611 if (endpt == USB_CONTROL_ENDPOINT) 1612 return EINVAL; 1613 /* This flag only affects read */ 1614 sce = &sc->sc_endpoints[endpt][IN]; 1615 if (sce == NULL || sce->pipeh == NULL) 1616 return EINVAL; 1617 if (*(int *)addr) 1618 sce->state |= UGEN_SHORT_OK; 1619 else 1620 sce->state &= ~UGEN_SHORT_OK; 1621 return 0; 1622 case USB_SET_TIMEOUT: 1623 for (dir = OUT; dir <= IN; dir++) { 1624 sce = &sc->sc_endpoints[endpt][dir]; 1625 if (sce == NULL) 1626 return EINVAL; 1627 1628 sce->timeout = *(int *)addr; 1629 } 1630 return 0; 1631 case USB_SET_BULK_RA: 1632 if (endpt == USB_CONTROL_ENDPOINT) 1633 return EINVAL; 1634 sce = &sc->sc_endpoints[endpt][IN]; 1635 if (sce == NULL || sce->pipeh == NULL) 1636 return EINVAL; 1637 edesc = sce->edesc; 1638 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1639 return EINVAL; 1640 1641 if (*(int *)addr) { 1642 /* Only turn RA on if it's currently off. */ 1643 if (sce->state & UGEN_BULK_RA) 1644 return 0; 1645 1646 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1647 /* shouldn't happen */ 1648 return EINVAL; 1649 error = usbd_create_xfer(sce->pipeh, 1650 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1651 if (error) 1652 return error; 1653 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1654 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1655 sce->fill = sce->cur = sce->ibuf; 1656 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1657 sce->ra_wb_used = 0; 1658 sce->state |= UGEN_BULK_RA; 1659 sce->state &= ~UGEN_RA_WB_STOP; 1660 /* Now start reading. */ 1661 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1662 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1663 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1664 err = usbd_transfer(sce->ra_wb_xfer); 1665 if (err != USBD_IN_PROGRESS) { 1666 sce->state &= ~UGEN_BULK_RA; 1667 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1668 sce->ibuf = NULL; 1669 usbd_destroy_xfer(sce->ra_wb_xfer); 1670 return EIO; 1671 } 1672 } else { 1673 /* Only turn RA off if it's currently on. */ 1674 if (!(sce->state & UGEN_BULK_RA)) 1675 return 0; 1676 1677 sce->state &= ~UGEN_BULK_RA; 1678 usbd_abort_pipe(sce->pipeh); 1679 usbd_destroy_xfer(sce->ra_wb_xfer); 1680 /* 1681 * XXX Discard whatever's in the buffer, but we 1682 * should keep it around and drain the buffer 1683 * instead. 1684 */ 1685 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1686 sce->ibuf = NULL; 1687 } 1688 return 0; 1689 case USB_SET_BULK_WB: 1690 if (endpt == USB_CONTROL_ENDPOINT) 1691 return EINVAL; 1692 sce = &sc->sc_endpoints[endpt][OUT]; 1693 if (sce == NULL || sce->pipeh == NULL) 1694 return EINVAL; 1695 edesc = sce->edesc; 1696 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1697 return EINVAL; 1698 1699 if (*(int *)addr) { 1700 /* Only turn WB on if it's currently off. */ 1701 if (sce->state & UGEN_BULK_WB) 1702 return 0; 1703 1704 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1705 /* shouldn't happen */ 1706 return EINVAL; 1707 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1708 0, 0, &sce->ra_wb_xfer); 1709 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1710 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1711 sce->fill = sce->cur = sce->ibuf; 1712 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1713 sce->ra_wb_used = 0; 1714 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1715 } else { 1716 /* Only turn WB off if it's currently on. */ 1717 if (!(sce->state & UGEN_BULK_WB)) 1718 return 0; 1719 1720 sce->state &= ~UGEN_BULK_WB; 1721 /* 1722 * XXX Discard whatever's in the buffer, but we 1723 * should keep it around and keep writing to 1724 * drain the buffer instead. 1725 */ 1726 usbd_abort_pipe(sce->pipeh); 1727 usbd_destroy_xfer(sce->ra_wb_xfer); 1728 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1729 sce->ibuf = NULL; 1730 } 1731 return 0; 1732 case USB_SET_BULK_RA_OPT: 1733 case USB_SET_BULK_WB_OPT: 1734 { 1735 struct usb_bulk_ra_wb_opt *opt; 1736 1737 if (endpt == USB_CONTROL_ENDPOINT) 1738 return EINVAL; 1739 opt = (struct usb_bulk_ra_wb_opt *)addr; 1740 if (cmd == USB_SET_BULK_RA_OPT) 1741 sce = &sc->sc_endpoints[endpt][IN]; 1742 else 1743 sce = &sc->sc_endpoints[endpt][OUT]; 1744 if (sce == NULL || sce->pipeh == NULL) 1745 return EINVAL; 1746 if (opt->ra_wb_buffer_size < 1 || 1747 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1748 opt->ra_wb_request_size < 1 || 1749 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1750 return EINVAL; 1751 /* 1752 * XXX These changes do not take effect until the 1753 * next time RA/WB mode is enabled but they ought to 1754 * take effect immediately. 1755 */ 1756 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1757 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1758 return 0; 1759 } 1760 default: 1761 break; 1762 } 1763 1764 if (endpt != USB_CONTROL_ENDPOINT) 1765 return EINVAL; 1766 1767 switch (cmd) { 1768 #ifdef UGEN_DEBUG 1769 case USB_SETDEBUG: 1770 ugendebug = *(int *)addr; 1771 break; 1772 #endif 1773 case USB_GET_CONFIG: 1774 err = usbd_get_config(sc->sc_udev, &conf); 1775 if (err) 1776 return EIO; 1777 *(int *)addr = conf; 1778 break; 1779 case USB_SET_CONFIG: 1780 if (!(flag & FWRITE)) 1781 return EPERM; 1782 err = ugen_set_config(sc, *(int *)addr, 1); 1783 switch (err) { 1784 case USBD_NORMAL_COMPLETION: 1785 break; 1786 case USBD_IN_USE: 1787 return EBUSY; 1788 default: 1789 return EIO; 1790 } 1791 break; 1792 case USB_GET_ALTINTERFACE: 1793 ai = (struct usb_alt_interface *)addr; 1794 err = usbd_device2interface_handle(sc->sc_udev, 1795 ai->uai_interface_index, &iface); 1796 if (err) 1797 return EINVAL; 1798 idesc = usbd_get_interface_descriptor(iface); 1799 if (idesc == NULL) 1800 return EIO; 1801 ai->uai_alt_no = idesc->bAlternateSetting; 1802 break; 1803 case USB_SET_ALTINTERFACE: 1804 if (!(flag & FWRITE)) 1805 return EPERM; 1806 ai = (struct usb_alt_interface *)addr; 1807 err = usbd_device2interface_handle(sc->sc_udev, 1808 ai->uai_interface_index, &iface); 1809 if (err) 1810 return EINVAL; 1811 err = ugen_set_interface(sc, ai->uai_interface_index, 1812 ai->uai_alt_no); 1813 if (err) 1814 return EINVAL; 1815 break; 1816 case USB_GET_NO_ALT: 1817 ai = (struct usb_alt_interface *)addr; 1818 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1819 if (cdesc == NULL) 1820 return EINVAL; 1821 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1822 if (idesc == NULL) { 1823 kmem_free(cdesc, cdesclen); 1824 return EINVAL; 1825 } 1826 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1827 idesc->bInterfaceNumber); 1828 kmem_free(cdesc, cdesclen); 1829 break; 1830 case USB_GET_DEVICE_DESC: 1831 *(usb_device_descriptor_t *)addr = 1832 *usbd_get_device_descriptor(sc->sc_udev); 1833 break; 1834 case USB_GET_CONFIG_DESC: 1835 cd = (struct usb_config_desc *)addr; 1836 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1837 if (cdesc == NULL) 1838 return EINVAL; 1839 cd->ucd_desc = *cdesc; 1840 kmem_free(cdesc, cdesclen); 1841 break; 1842 case USB_GET_INTERFACE_DESC: 1843 id = (struct usb_interface_desc *)addr; 1844 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1845 if (cdesc == NULL) 1846 return EINVAL; 1847 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1848 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1849 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1850 else 1851 alt = id->uid_alt_index; 1852 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1853 if (idesc == NULL) { 1854 kmem_free(cdesc, cdesclen); 1855 return EINVAL; 1856 } 1857 id->uid_desc = *idesc; 1858 kmem_free(cdesc, cdesclen); 1859 break; 1860 case USB_GET_ENDPOINT_DESC: 1861 ed = (struct usb_endpoint_desc *)addr; 1862 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1863 if (cdesc == NULL) 1864 return EINVAL; 1865 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1866 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1867 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1868 else 1869 alt = ed->ued_alt_index; 1870 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1871 alt, ed->ued_endpoint_index); 1872 if (edesc == NULL) { 1873 kmem_free(cdesc, cdesclen); 1874 return EINVAL; 1875 } 1876 ed->ued_desc = *edesc; 1877 kmem_free(cdesc, cdesclen); 1878 break; 1879 case USB_GET_FULL_DESC: 1880 { 1881 int len; 1882 struct iovec iov; 1883 struct uio uio; 1884 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1885 1886 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1887 if (cdesc == NULL) 1888 return EINVAL; 1889 len = cdesclen; 1890 if (len > fd->ufd_size) 1891 len = fd->ufd_size; 1892 iov.iov_base = (void *)fd->ufd_data; 1893 iov.iov_len = len; 1894 uio.uio_iov = &iov; 1895 uio.uio_iovcnt = 1; 1896 uio.uio_resid = len; 1897 uio.uio_offset = 0; 1898 uio.uio_rw = UIO_READ; 1899 uio.uio_vmspace = l->l_proc->p_vmspace; 1900 error = uiomove((void *)cdesc, len, &uio); 1901 kmem_free(cdesc, cdesclen); 1902 return error; 1903 } 1904 case USB_GET_STRING_DESC: { 1905 int len; 1906 si = (struct usb_string_desc *)addr; 1907 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1908 si->usd_language_id, &si->usd_desc, &len); 1909 if (err) 1910 return EINVAL; 1911 break; 1912 } 1913 case USB_DO_REQUEST: 1914 { 1915 struct usb_ctl_request *ur = (void *)addr; 1916 int len = UGETW(ur->ucr_request.wLength); 1917 struct iovec iov; 1918 struct uio uio; 1919 void *ptr = 0; 1920 usbd_status xerr; 1921 1922 error = 0; 1923 1924 if (!(flag & FWRITE)) 1925 return EPERM; 1926 /* Avoid requests that would damage the bus integrity. */ 1927 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1928 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1929 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1930 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1931 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1932 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1933 return EINVAL; 1934 1935 if (len < 0 || len > 32767) 1936 return EINVAL; 1937 if (len != 0) { 1938 iov.iov_base = (void *)ur->ucr_data; 1939 iov.iov_len = len; 1940 uio.uio_iov = &iov; 1941 uio.uio_iovcnt = 1; 1942 uio.uio_resid = len; 1943 uio.uio_offset = 0; 1944 uio.uio_rw = 1945 ur->ucr_request.bmRequestType & UT_READ ? 1946 UIO_READ : UIO_WRITE; 1947 uio.uio_vmspace = l->l_proc->p_vmspace; 1948 ptr = kmem_alloc(len, KM_SLEEP); 1949 if (uio.uio_rw == UIO_WRITE) { 1950 error = uiomove(ptr, len, &uio); 1951 if (error) 1952 goto ret; 1953 } 1954 } 1955 sce = &sc->sc_endpoints[endpt][IN]; 1956 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1957 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1958 if (xerr) { 1959 error = EIO; 1960 goto ret; 1961 } 1962 if (len != 0) { 1963 if (uio.uio_rw == UIO_READ) { 1964 size_t alen = uimin(len, ur->ucr_actlen); 1965 error = uiomove(ptr, alen, &uio); 1966 if (error) 1967 goto ret; 1968 } 1969 } 1970 ret: 1971 if (ptr) 1972 kmem_free(ptr, len); 1973 return error; 1974 } 1975 case USB_GET_DEVICEINFO: 1976 usbd_fill_deviceinfo(sc->sc_udev, 1977 (struct usb_device_info *)addr, 0); 1978 break; 1979 case USB_GET_DEVICEINFO_OLD: 1980 { 1981 int ret; 1982 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1983 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1984 usbd_devinfo_vp, usbd_printBCD), 1985 enosys(), ret); 1986 if (ret == 0) 1987 return 0; 1988 return EINVAL; 1989 } 1990 default: 1991 return EINVAL; 1992 } 1993 return 0; 1994 } 1995 1996 static int 1997 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1998 { 1999 int endpt = UGENENDPOINT(dev); 2000 struct ugen_softc *sc; 2001 int error; 2002 2003 if ((sc = ugenif_acquire(UGENUNIT(dev))) == 0) 2004 return ENXIO; 2005 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 2006 ugenif_release(sc); 2007 2008 return error; 2009 } 2010 2011 static int 2012 ugenpoll(dev_t dev, int events, struct lwp *l) 2013 { 2014 struct ugen_softc *sc; 2015 struct ugen_endpoint *sce_in, *sce_out; 2016 int revents = 0; 2017 2018 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2019 return POLLHUP; 2020 2021 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2022 revents |= POLLERR; 2023 goto out; 2024 } 2025 2026 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2027 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2028 KASSERT(sce_in->edesc || sce_out->edesc); 2029 KASSERT(sce_in->pipeh || sce_out->pipeh); 2030 2031 mutex_enter(&sc->sc_lock); 2032 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 2033 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 2034 case UE_INTERRUPT: 2035 if (sce_in->q.c_cc > 0) 2036 revents |= events & (POLLIN | POLLRDNORM); 2037 else 2038 selrecord(l, &sce_in->rsel); 2039 break; 2040 case UE_ISOCHRONOUS: 2041 if (sce_in->cur != sce_in->fill) 2042 revents |= events & (POLLIN | POLLRDNORM); 2043 else 2044 selrecord(l, &sce_in->rsel); 2045 break; 2046 case UE_BULK: 2047 if (sce_in->state & UGEN_BULK_RA) { 2048 if (sce_in->ra_wb_used > 0) 2049 revents |= events & 2050 (POLLIN | POLLRDNORM); 2051 else 2052 selrecord(l, &sce_in->rsel); 2053 break; 2054 } 2055 /* 2056 * We have no easy way of determining if a read will 2057 * yield any data or a write will happen. 2058 * Pretend they will. 2059 */ 2060 revents |= events & (POLLIN | POLLRDNORM); 2061 break; 2062 default: 2063 break; 2064 } 2065 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 2066 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 2067 case UE_INTERRUPT: 2068 case UE_ISOCHRONOUS: 2069 /* XXX unimplemented */ 2070 break; 2071 case UE_BULK: 2072 if (sce_out->state & UGEN_BULK_WB) { 2073 if (sce_out->ra_wb_used < 2074 sce_out->limit - sce_out->ibuf) 2075 revents |= events & 2076 (POLLOUT | POLLWRNORM); 2077 else 2078 selrecord(l, &sce_out->rsel); 2079 break; 2080 } 2081 /* 2082 * We have no easy way of determining if a read will 2083 * yield any data or a write will happen. 2084 * Pretend they will. 2085 */ 2086 revents |= events & (POLLOUT | POLLWRNORM); 2087 break; 2088 default: 2089 break; 2090 } 2091 2092 mutex_exit(&sc->sc_lock); 2093 2094 out: ugenif_release(sc); 2095 return revents; 2096 } 2097 2098 static void 2099 filt_ugenrdetach(struct knote *kn) 2100 { 2101 struct ugen_endpoint *sce = kn->kn_hook; 2102 struct ugen_softc *sc = sce->sc; 2103 2104 mutex_enter(&sc->sc_lock); 2105 selremove_knote(&sce->rsel, kn); 2106 mutex_exit(&sc->sc_lock); 2107 } 2108 2109 static int 2110 filt_ugenread_intr(struct knote *kn, long hint) 2111 { 2112 struct ugen_endpoint *sce = kn->kn_hook; 2113 struct ugen_softc *sc = sce->sc; 2114 int ret; 2115 2116 mutex_enter(&sc->sc_lock); 2117 if (sc->sc_dying) { 2118 ret = 0; 2119 } else { 2120 kn->kn_data = sce->q.c_cc; 2121 ret = kn->kn_data > 0; 2122 } 2123 mutex_exit(&sc->sc_lock); 2124 2125 return ret; 2126 } 2127 2128 static int 2129 filt_ugenread_isoc(struct knote *kn, long hint) 2130 { 2131 struct ugen_endpoint *sce = kn->kn_hook; 2132 struct ugen_softc *sc = sce->sc; 2133 int ret; 2134 2135 mutex_enter(&sc->sc_lock); 2136 if (sc->sc_dying) { 2137 ret = 0; 2138 } else if (sce->cur == sce->fill) { 2139 ret = 0; 2140 } else if (sce->cur < sce->fill) { 2141 kn->kn_data = sce->fill - sce->cur; 2142 ret = 1; 2143 } else { 2144 kn->kn_data = (sce->limit - sce->cur) + 2145 (sce->fill - sce->ibuf); 2146 ret = 1; 2147 } 2148 mutex_exit(&sc->sc_lock); 2149 2150 return ret; 2151 } 2152 2153 static int 2154 filt_ugenread_bulk(struct knote *kn, long hint) 2155 { 2156 struct ugen_endpoint *sce = kn->kn_hook; 2157 struct ugen_softc *sc = sce->sc; 2158 int ret; 2159 2160 mutex_enter(&sc->sc_lock); 2161 if (sc->sc_dying) { 2162 ret = 0; 2163 } else if (!(sce->state & UGEN_BULK_RA)) { 2164 /* 2165 * We have no easy way of determining if a read will 2166 * yield any data or a write will happen. 2167 * So, emulate "seltrue". 2168 */ 2169 ret = filt_seltrue(kn, hint); 2170 } else if (sce->ra_wb_used == 0) { 2171 ret = 0; 2172 } else { 2173 kn->kn_data = sce->ra_wb_used; 2174 ret = 1; 2175 } 2176 mutex_exit(&sc->sc_lock); 2177 2178 return ret; 2179 } 2180 2181 static int 2182 filt_ugenwrite_bulk(struct knote *kn, long hint) 2183 { 2184 struct ugen_endpoint *sce = kn->kn_hook; 2185 struct ugen_softc *sc = sce->sc; 2186 int ret; 2187 2188 mutex_enter(&sc->sc_lock); 2189 if (sc->sc_dying) { 2190 ret = 0; 2191 } else if (!(sce->state & UGEN_BULK_WB)) { 2192 /* 2193 * We have no easy way of determining if a read will 2194 * yield any data or a write will happen. 2195 * So, emulate "seltrue". 2196 */ 2197 ret = filt_seltrue(kn, hint); 2198 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2199 ret = 0; 2200 } else { 2201 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2202 ret = 1; 2203 } 2204 mutex_exit(&sc->sc_lock); 2205 2206 return ret; 2207 } 2208 2209 static const struct filterops ugenread_intr_filtops = { 2210 .f_isfd = 1, 2211 .f_attach = NULL, 2212 .f_detach = filt_ugenrdetach, 2213 .f_event = filt_ugenread_intr, 2214 }; 2215 2216 static const struct filterops ugenread_isoc_filtops = { 2217 .f_isfd = 1, 2218 .f_attach = NULL, 2219 .f_detach = filt_ugenrdetach, 2220 .f_event = filt_ugenread_isoc, 2221 }; 2222 2223 static const struct filterops ugenread_bulk_filtops = { 2224 .f_isfd = 1, 2225 .f_attach = NULL, 2226 .f_detach = filt_ugenrdetach, 2227 .f_event = filt_ugenread_bulk, 2228 }; 2229 2230 static const struct filterops ugenwrite_bulk_filtops = { 2231 .f_isfd = 1, 2232 .f_attach = NULL, 2233 .f_detach = filt_ugenrdetach, 2234 .f_event = filt_ugenwrite_bulk, 2235 }; 2236 2237 static int 2238 ugenkqfilter(dev_t dev, struct knote *kn) 2239 { 2240 struct ugen_softc *sc; 2241 struct ugen_endpoint *sce; 2242 struct selinfo *sip; 2243 int error; 2244 2245 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2246 return ENXIO; 2247 2248 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2249 error = ENODEV; 2250 goto out; 2251 } 2252 2253 switch (kn->kn_filter) { 2254 case EVFILT_READ: 2255 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2256 if (sce == NULL) { 2257 error = EINVAL; 2258 goto out; 2259 } 2260 2261 sip = &sce->rsel; 2262 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2263 case UE_INTERRUPT: 2264 kn->kn_fop = &ugenread_intr_filtops; 2265 break; 2266 case UE_ISOCHRONOUS: 2267 kn->kn_fop = &ugenread_isoc_filtops; 2268 break; 2269 case UE_BULK: 2270 kn->kn_fop = &ugenread_bulk_filtops; 2271 break; 2272 default: 2273 error = EINVAL; 2274 goto out; 2275 } 2276 break; 2277 2278 case EVFILT_WRITE: 2279 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2280 if (sce == NULL) { 2281 error = EINVAL; 2282 goto out; 2283 } 2284 2285 sip = &sce->rsel; 2286 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2287 case UE_INTERRUPT: 2288 case UE_ISOCHRONOUS: 2289 /* XXX poll doesn't support this */ 2290 error = EINVAL; 2291 goto out; 2292 2293 case UE_BULK: 2294 kn->kn_fop = &ugenwrite_bulk_filtops; 2295 break; 2296 default: 2297 error = EINVAL; 2298 goto out; 2299 } 2300 break; 2301 2302 default: 2303 error = EINVAL; 2304 goto out; 2305 } 2306 2307 kn->kn_hook = sce; 2308 2309 mutex_enter(&sc->sc_lock); 2310 selrecord_knote(sip, kn); 2311 mutex_exit(&sc->sc_lock); 2312 2313 error = 0; 2314 2315 out: ugenif_release(sc); 2316 return error; 2317 } 2318 2319 MODULE(MODULE_CLASS_DRIVER, ugen, NULL); 2320 2321 static int 2322 ugen_modcmd(modcmd_t cmd, void *aux) 2323 { 2324 2325 switch (cmd) { 2326 case MODULE_CMD_INIT: 2327 mutex_init(&ugenif.lock, MUTEX_DEFAULT, IPL_NONE); 2328 rb_tree_init(&ugenif.tree, &ugenif_tree_ops); 2329 return 0; 2330 default: 2331 return ENOTTY; 2332 } 2333 } 2334
Indexes created Thu Sep 25 16:09:42 GMT 2025