ugen.c revision 1.162
1 /* $NetBSD: ugen.c,v 1.162 2021/09/07 10:42:59 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 1.162 2021/09/07 10:42:59 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 int 694 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 695 { 696 int endpt = UGENENDPOINT(dev); 697 struct ugen_softc *sc; 698 struct ugen_endpoint *sce; 699 int dir; 700 int i; 701 int error; 702 703 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 704 705 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 706 return ENXIO; 707 708 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 709 flag, mode, UGENUNIT(dev), endpt)); 710 711 KASSERT(sc->sc_is_open[endpt]); 712 713 if (endpt == USB_CONTROL_ENDPOINT) { 714 DPRINTFN(5, ("ugenclose: close control\n")); 715 sc->sc_is_open[endpt] = 0; 716 error = 0; 717 goto out; 718 } 719 720 for (dir = OUT; dir <= IN; dir++) { 721 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 722 continue; 723 sce = &sc->sc_endpoints[endpt][dir]; 724 if (sce->pipeh == NULL) 725 continue; 726 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 727 endpt, dir, sce)); 728 729 usbd_abort_pipe(sce->pipeh); 730 731 int isize = UGETW(sce->edesc->wMaxPacketSize); 732 int msize = 0; 733 734 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 735 case UE_INTERRUPT: 736 ndflush(&sce->q, sce->q.c_cc); 737 clfree(&sce->q); 738 msize = isize; 739 break; 740 case UE_ISOCHRONOUS: 741 for (i = 0; i < UGEN_NISOREQS; ++i) 742 usbd_destroy_xfer(sce->isoreqs[i].xfer); 743 msize = isize * UGEN_NISOFRAMES; 744 break; 745 case UE_BULK: 746 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 747 usbd_destroy_xfer(sce->ra_wb_xfer); 748 msize = sce->ra_wb_bufsize; 749 } 750 break; 751 default: 752 break; 753 } 754 usbd_close_pipe(sce->pipeh); 755 sce->pipeh = NULL; 756 if (sce->ibuf != NULL) { 757 kmem_free(sce->ibuf, msize); 758 sce->ibuf = NULL; 759 } 760 } 761 sc->sc_is_open[endpt] = 0; 762 error = 0; 763 764 out: ugenif_release(sc); 765 return error; 766 } 767 768 Static int 769 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 770 { 771 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 772 uint32_t n, tn; 773 struct usbd_xfer *xfer; 774 usbd_status err; 775 int error = 0; 776 777 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 778 779 if (endpt == USB_CONTROL_ENDPOINT) 780 return ENODEV; 781 782 KASSERT(sce->edesc); 783 KASSERT(sce->pipeh); 784 785 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 786 case UE_INTERRUPT: 787 /* Block until activity occurred. */ 788 mutex_enter(&sc->sc_lock); 789 while (sce->q.c_cc == 0) { 790 if (flag & IO_NDELAY) { 791 mutex_exit(&sc->sc_lock); 792 return EWOULDBLOCK; 793 } 794 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 795 /* "ugenri" */ 796 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 797 mstohz(sce->timeout)); 798 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 799 if (sc->sc_dying) 800 error = EIO; 801 if (error) 802 break; 803 } 804 mutex_exit(&sc->sc_lock); 805 806 /* Transfer as many chunks as possible. */ 807 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 808 n = uimin(sce->q.c_cc, uio->uio_resid); 809 if (n > sizeof(sc->sc_buffer)) 810 n = sizeof(sc->sc_buffer); 811 812 /* Remove a small chunk from the input queue. */ 813 q_to_b(&sce->q, sc->sc_buffer, n); 814 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 815 816 /* Copy the data to the user process. */ 817 error = uiomove(sc->sc_buffer, n, uio); 818 if (error) 819 break; 820 } 821 break; 822 case UE_BULK: 823 if (sce->state & UGEN_BULK_RA) { 824 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 825 uio->uio_resid, sce->ra_wb_used)); 826 xfer = sce->ra_wb_xfer; 827 828 mutex_enter(&sc->sc_lock); 829 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 830 mutex_exit(&sc->sc_lock); 831 return EWOULDBLOCK; 832 } 833 while (uio->uio_resid > 0 && !error) { 834 while (sce->ra_wb_used == 0) { 835 DPRINTFN(5, 836 ("ugenread: sleep on %p\n", 837 sce)); 838 /* "ugenrb" */ 839 error = cv_timedwait_sig(&sce->cv, 840 &sc->sc_lock, mstohz(sce->timeout)); 841 DPRINTFN(5, 842 ("ugenread: woke, error=%d\n", 843 error)); 844 if (sc->sc_dying) 845 error = EIO; 846 if (error) 847 break; 848 } 849 850 /* Copy data to the process. */ 851 while (uio->uio_resid > 0 852 && sce->ra_wb_used > 0) { 853 n = uimin(uio->uio_resid, 854 sce->ra_wb_used); 855 n = uimin(n, sce->limit - sce->cur); 856 error = uiomove(sce->cur, n, uio); 857 if (error) 858 break; 859 sce->cur += n; 860 sce->ra_wb_used -= n; 861 if (sce->cur == sce->limit) 862 sce->cur = sce->ibuf; 863 } 864 865 /* 866 * If the transfers stopped because the 867 * buffer was full, restart them. 868 */ 869 if (sce->state & UGEN_RA_WB_STOP && 870 sce->ra_wb_used < sce->limit - sce->ibuf) { 871 n = (sce->limit - sce->ibuf) 872 - sce->ra_wb_used; 873 usbd_setup_xfer(xfer, sce, NULL, 874 uimin(n, sce->ra_wb_xferlen), 875 0, USBD_NO_TIMEOUT, 876 ugen_bulkra_intr); 877 sce->state &= ~UGEN_RA_WB_STOP; 878 err = usbd_transfer(xfer); 879 if (err != USBD_IN_PROGRESS) 880 /* 881 * The transfer has not been 882 * queued. Setting STOP 883 * will make us try 884 * again at the next read. 885 */ 886 sce->state |= UGEN_RA_WB_STOP; 887 } 888 } 889 mutex_exit(&sc->sc_lock); 890 break; 891 } 892 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 893 0, 0, &xfer); 894 if (error) 895 return error; 896 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 897 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 898 tn = n; 899 err = usbd_bulk_transfer(xfer, sce->pipeh, 900 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 901 sce->timeout, sc->sc_buffer, &tn); 902 if (err) { 903 if (err == USBD_INTERRUPTED) 904 error = EINTR; 905 else if (err == USBD_TIMEOUT) 906 error = ETIMEDOUT; 907 else 908 error = EIO; 909 break; 910 } 911 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 912 error = uiomove(sc->sc_buffer, tn, uio); 913 if (error || tn < n) 914 break; 915 } 916 usbd_destroy_xfer(xfer); 917 break; 918 case UE_ISOCHRONOUS: 919 mutex_enter(&sc->sc_lock); 920 while (sce->cur == sce->fill) { 921 if (flag & IO_NDELAY) { 922 mutex_exit(&sc->sc_lock); 923 return EWOULDBLOCK; 924 } 925 /* "ugenri" */ 926 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 927 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 928 mstohz(sce->timeout)); 929 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 930 if (sc->sc_dying) 931 error = EIO; 932 if (error) 933 break; 934 } 935 936 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 937 if(sce->fill > sce->cur) 938 n = uimin(sce->fill - sce->cur, uio->uio_resid); 939 else 940 n = uimin(sce->limit - sce->cur, uio->uio_resid); 941 942 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 943 944 /* Copy the data to the user process. */ 945 error = uiomove(sce->cur, n, uio); 946 if (error) 947 break; 948 sce->cur += n; 949 if (sce->cur >= sce->limit) 950 sce->cur = sce->ibuf; 951 } 952 mutex_exit(&sc->sc_lock); 953 break; 954 955 956 default: 957 return ENXIO; 958 } 959 return error; 960 } 961 962 static int 963 ugenread(dev_t dev, struct uio *uio, int flag) 964 { 965 int endpt = UGENENDPOINT(dev); 966 struct ugen_softc *sc; 967 int error; 968 969 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 970 return ENXIO; 971 error = ugen_do_read(sc, endpt, uio, flag); 972 ugenif_release(sc); 973 974 return error; 975 } 976 977 Static int 978 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 979 int flag) 980 { 981 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 982 uint32_t n; 983 int error = 0; 984 uint32_t tn; 985 char *dbuf; 986 struct usbd_xfer *xfer; 987 usbd_status err; 988 989 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 990 991 if (endpt == USB_CONTROL_ENDPOINT) 992 return ENODEV; 993 994 KASSERT(sce->edesc); 995 KASSERT(sce->pipeh); 996 997 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 998 case UE_BULK: 999 if (sce->state & UGEN_BULK_WB) { 1000 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 1001 uio->uio_resid, sce->ra_wb_used)); 1002 xfer = sce->ra_wb_xfer; 1003 1004 mutex_enter(&sc->sc_lock); 1005 if (sce->ra_wb_used == sce->limit - sce->ibuf && 1006 flag & IO_NDELAY) { 1007 mutex_exit(&sc->sc_lock); 1008 return EWOULDBLOCK; 1009 } 1010 while (uio->uio_resid > 0 && !error) { 1011 while (sce->ra_wb_used == 1012 sce->limit - sce->ibuf) { 1013 DPRINTFN(5, 1014 ("ugenwrite: sleep on %p\n", 1015 sce)); 1016 /* "ugenwb" */ 1017 error = cv_timedwait_sig(&sce->cv, 1018 &sc->sc_lock, mstohz(sce->timeout)); 1019 DPRINTFN(5, 1020 ("ugenwrite: woke, error=%d\n", 1021 error)); 1022 if (sc->sc_dying) 1023 error = EIO; 1024 if (error) 1025 break; 1026 } 1027 1028 /* Copy data from the process. */ 1029 while (uio->uio_resid > 0 && 1030 sce->ra_wb_used < sce->limit - sce->ibuf) { 1031 n = uimin(uio->uio_resid, 1032 (sce->limit - sce->ibuf) 1033 - sce->ra_wb_used); 1034 n = uimin(n, sce->limit - sce->fill); 1035 error = uiomove(sce->fill, n, uio); 1036 if (error) 1037 break; 1038 sce->fill += n; 1039 sce->ra_wb_used += n; 1040 if (sce->fill == sce->limit) 1041 sce->fill = sce->ibuf; 1042 } 1043 1044 /* 1045 * If the transfers stopped because the 1046 * buffer was empty, restart them. 1047 */ 1048 if (sce->state & UGEN_RA_WB_STOP && 1049 sce->ra_wb_used > 0) { 1050 dbuf = (char *)usbd_get_buffer(xfer); 1051 n = uimin(sce->ra_wb_used, 1052 sce->ra_wb_xferlen); 1053 tn = uimin(n, sce->limit - sce->cur); 1054 memcpy(dbuf, sce->cur, tn); 1055 dbuf += tn; 1056 if (n - tn > 0) 1057 memcpy(dbuf, sce->ibuf, 1058 n - tn); 1059 usbd_setup_xfer(xfer, sce, NULL, n, 1060 0, USBD_NO_TIMEOUT, 1061 ugen_bulkwb_intr); 1062 sce->state &= ~UGEN_RA_WB_STOP; 1063 err = usbd_transfer(xfer); 1064 if (err != USBD_IN_PROGRESS) 1065 /* 1066 * The transfer has not been 1067 * queued. Setting STOP 1068 * will make us try again 1069 * at the next read. 1070 */ 1071 sce->state |= UGEN_RA_WB_STOP; 1072 } 1073 } 1074 mutex_exit(&sc->sc_lock); 1075 break; 1076 } 1077 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 1078 0, 0, &xfer); 1079 if (error) 1080 return error; 1081 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 1082 error = uiomove(sc->sc_buffer, n, uio); 1083 if (error) 1084 break; 1085 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1086 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 1087 sc->sc_buffer, &n); 1088 if (err) { 1089 if (err == USBD_INTERRUPTED) 1090 error = EINTR; 1091 else if (err == USBD_TIMEOUT) 1092 error = ETIMEDOUT; 1093 else 1094 error = EIO; 1095 break; 1096 } 1097 } 1098 usbd_destroy_xfer(xfer); 1099 break; 1100 case UE_INTERRUPT: 1101 error = usbd_create_xfer(sce->pipeh, 1102 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 1103 if (error) 1104 return error; 1105 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 1106 uio->uio_resid)) != 0) { 1107 error = uiomove(sc->sc_buffer, n, uio); 1108 if (error) 1109 break; 1110 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1111 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 1112 sce->timeout, sc->sc_buffer, &n); 1113 if (err) { 1114 if (err == USBD_INTERRUPTED) 1115 error = EINTR; 1116 else if (err == USBD_TIMEOUT) 1117 error = ETIMEDOUT; 1118 else 1119 error = EIO; 1120 break; 1121 } 1122 } 1123 usbd_destroy_xfer(xfer); 1124 break; 1125 default: 1126 return ENXIO; 1127 } 1128 return error; 1129 } 1130 1131 static int 1132 ugenwrite(dev_t dev, struct uio *uio, int flag) 1133 { 1134 int endpt = UGENENDPOINT(dev); 1135 struct ugen_softc *sc; 1136 int error; 1137 1138 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1139 return ENXIO; 1140 error = ugen_do_write(sc, endpt, uio, flag); 1141 ugenif_release(sc); 1142 1143 return error; 1144 } 1145 1146 static int 1147 ugen_activate(device_t self, enum devact act) 1148 { 1149 struct ugen_softc *sc = device_private(self); 1150 1151 switch (act) { 1152 case DVACT_DEACTIVATE: 1153 sc->sc_dying = 1; 1154 return 0; 1155 default: 1156 return EOPNOTSUPP; 1157 } 1158 } 1159 1160 static int 1161 ugen_detach(device_t self, int flags) 1162 { 1163 struct ugen_softc *sc = device_private(self); 1164 struct ugen_endpoint *sce; 1165 int i, dir; 1166 int maj, mn; 1167 1168 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1169 1170 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 1171 1172 /* 1173 * Fail if we're not forced to detach and userland has any 1174 * endpoints open. 1175 */ 1176 if ((flags & DETACH_FORCE) == 0) { 1177 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1178 if (sc->sc_is_open[i]) 1179 return EBUSY; 1180 } 1181 } 1182 1183 /* Prevent new users. Prevent suspend/resume. */ 1184 sc->sc_dying = 1; 1185 pmf_device_deregister(self); 1186 1187 /* 1188 * If we never finished attaching, skip nixing endpoints and 1189 * users because there aren't any. 1190 */ 1191 if (!sc->sc_attached) 1192 goto out; 1193 1194 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1195 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1196 for (dir = OUT; dir <= IN; dir++) { 1197 sce = &sc->sc_endpoints[i][dir]; 1198 if (sce->pipeh) 1199 usbd_abort_pipe(sce->pipeh); 1200 } 1201 } 1202 1203 mutex_enter(&sc->sc_lock); 1204 if (--sc->sc_refcnt >= 0) { 1205 /* Wake everyone */ 1206 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1207 cv_signal(&sc->sc_endpoints[i][IN].cv); 1208 /* Wait for processes to go away. */ 1209 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1210 aprint_error_dev(self, ": didn't detach\n"); 1211 } 1212 mutex_exit(&sc->sc_lock); 1213 1214 /* locate the major number */ 1215 maj = cdevsw_lookup_major(&ugen_cdevsw); 1216 1217 /* Nuke the vnodes for any open instances (calls close). */ 1218 mn = sc->sc_unit * USB_MAX_ENDPOINTS; 1219 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1220 1221 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1222 ugenif_put_unit(sc); 1223 1224 out: for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1225 for (dir = OUT; dir <= IN; dir++) { 1226 sce = &sc->sc_endpoints[i][dir]; 1227 seldestroy(&sce->rsel); 1228 cv_destroy(&sce->cv); 1229 } 1230 } 1231 1232 cv_destroy(&sc->sc_detach_cv); 1233 mutex_destroy(&sc->sc_lock); 1234 1235 return 0; 1236 } 1237 1238 Static void 1239 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1240 { 1241 struct ugen_endpoint *sce = addr; 1242 struct ugen_softc *sc = sce->sc; 1243 uint32_t count; 1244 u_char *ibuf; 1245 1246 if (status == USBD_CANCELLED) 1247 return; 1248 1249 if (status != USBD_NORMAL_COMPLETION) { 1250 DPRINTF(("ugenintr: status=%d\n", status)); 1251 if (status == USBD_STALLED) 1252 usbd_clear_endpoint_stall_async(sce->pipeh); 1253 return; 1254 } 1255 1256 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1257 ibuf = sce->ibuf; 1258 1259 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1260 xfer, status, count)); 1261 DPRINTFN(5, (" data = %02x %02x %02x\n", 1262 ibuf[0], ibuf[1], ibuf[2])); 1263 1264 mutex_enter(&sc->sc_lock); 1265 (void)b_to_q(ibuf, count, &sce->q); 1266 cv_signal(&sce->cv); 1267 mutex_exit(&sc->sc_lock); 1268 selnotify(&sce->rsel, 0, 0); 1269 } 1270 1271 Static void 1272 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1273 usbd_status status) 1274 { 1275 struct isoreq *req = addr; 1276 struct ugen_endpoint *sce = req->sce; 1277 struct ugen_softc *sc = sce->sc; 1278 uint32_t count, n; 1279 int i, isize; 1280 1281 /* Return if we are aborting. */ 1282 if (status == USBD_CANCELLED) 1283 return; 1284 1285 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1286 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1287 (long)(req - sce->isoreqs), count)); 1288 1289 mutex_enter(&sc->sc_lock); 1290 1291 /* throw away oldest input if the buffer is full */ 1292 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1293 sce->cur += count; 1294 if (sce->cur >= sce->limit) 1295 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1296 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1297 count)); 1298 } 1299 1300 isize = UGETW(sce->edesc->wMaxPacketSize); 1301 for (i = 0; i < UGEN_NISORFRMS; i++) { 1302 uint32_t actlen = req->sizes[i]; 1303 char const *tbuf = (char const *)req->dmabuf + isize * i; 1304 1305 /* copy data to buffer */ 1306 while (actlen > 0) { 1307 n = uimin(actlen, sce->limit - sce->fill); 1308 memcpy(sce->fill, tbuf, n); 1309 1310 tbuf += n; 1311 actlen -= n; 1312 sce->fill += n; 1313 if (sce->fill == sce->limit) 1314 sce->fill = sce->ibuf; 1315 } 1316 1317 /* setup size for next transfer */ 1318 req->sizes[i] = isize; 1319 } 1320 1321 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1322 ugen_isoc_rintr); 1323 (void)usbd_transfer(xfer); 1324 1325 cv_signal(&sce->cv); 1326 mutex_exit(&sc->sc_lock); 1327 selnotify(&sce->rsel, 0, 0); 1328 } 1329 1330 Static void 1331 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1332 usbd_status status) 1333 { 1334 struct ugen_endpoint *sce = addr; 1335 struct ugen_softc *sc = sce->sc; 1336 uint32_t count, n; 1337 char const *tbuf; 1338 usbd_status err; 1339 1340 /* Return if we are aborting. */ 1341 if (status == USBD_CANCELLED) 1342 return; 1343 1344 if (status != USBD_NORMAL_COMPLETION) { 1345 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1346 sce->state |= UGEN_RA_WB_STOP; 1347 if (status == USBD_STALLED) 1348 usbd_clear_endpoint_stall_async(sce->pipeh); 1349 return; 1350 } 1351 1352 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1353 1354 mutex_enter(&sc->sc_lock); 1355 1356 /* Keep track of how much is in the buffer. */ 1357 sce->ra_wb_used += count; 1358 1359 /* Copy data to buffer. */ 1360 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1361 n = uimin(count, sce->limit - sce->fill); 1362 memcpy(sce->fill, tbuf, n); 1363 tbuf += n; 1364 count -= n; 1365 sce->fill += n; 1366 if (sce->fill == sce->limit) 1367 sce->fill = sce->ibuf; 1368 if (count > 0) { 1369 memcpy(sce->fill, tbuf, count); 1370 sce->fill += count; 1371 } 1372 1373 /* Set up the next request if necessary. */ 1374 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1375 if (n > 0) { 1376 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1377 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1378 err = usbd_transfer(xfer); 1379 if (err != USBD_IN_PROGRESS) { 1380 printf("usbd_bulkra_intr: error=%d\n", err); 1381 /* 1382 * The transfer has not been queued. Setting STOP 1383 * will make us try again at the next read. 1384 */ 1385 sce->state |= UGEN_RA_WB_STOP; 1386 } 1387 } 1388 else 1389 sce->state |= UGEN_RA_WB_STOP; 1390 1391 cv_signal(&sce->cv); 1392 mutex_exit(&sc->sc_lock); 1393 selnotify(&sce->rsel, 0, 0); 1394 } 1395 1396 Static void 1397 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1398 usbd_status status) 1399 { 1400 struct ugen_endpoint *sce = addr; 1401 struct ugen_softc *sc = sce->sc; 1402 uint32_t count, n; 1403 char *tbuf; 1404 usbd_status err; 1405 1406 /* Return if we are aborting. */ 1407 if (status == USBD_CANCELLED) 1408 return; 1409 1410 if (status != USBD_NORMAL_COMPLETION) { 1411 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1412 sce->state |= UGEN_RA_WB_STOP; 1413 if (status == USBD_STALLED) 1414 usbd_clear_endpoint_stall_async(sce->pipeh); 1415 return; 1416 } 1417 1418 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1419 1420 mutex_enter(&sc->sc_lock); 1421 1422 /* Keep track of how much is in the buffer. */ 1423 sce->ra_wb_used -= count; 1424 1425 /* Update buffer pointers. */ 1426 sce->cur += count; 1427 if (sce->cur >= sce->limit) 1428 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1429 1430 /* Set up next request if necessary. */ 1431 if (sce->ra_wb_used > 0) { 1432 /* copy data from buffer */ 1433 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1434 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1435 n = uimin(count, sce->limit - sce->cur); 1436 memcpy(tbuf, sce->cur, n); 1437 tbuf += n; 1438 if (count - n > 0) 1439 memcpy(tbuf, sce->ibuf, count - n); 1440 1441 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1442 ugen_bulkwb_intr); 1443 err = usbd_transfer(xfer); 1444 if (err != USBD_IN_PROGRESS) { 1445 printf("usbd_bulkwb_intr: error=%d\n", err); 1446 /* 1447 * The transfer has not been queued. Setting STOP 1448 * will make us try again at the next write. 1449 */ 1450 sce->state |= UGEN_RA_WB_STOP; 1451 } 1452 } 1453 else 1454 sce->state |= UGEN_RA_WB_STOP; 1455 1456 cv_signal(&sce->cv); 1457 mutex_exit(&sc->sc_lock); 1458 selnotify(&sce->rsel, 0, 0); 1459 } 1460 1461 Static usbd_status 1462 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1463 { 1464 struct usbd_interface *iface; 1465 usb_endpoint_descriptor_t *ed; 1466 usbd_status err; 1467 struct ugen_endpoint *sce; 1468 uint8_t niface, nendpt, endptno, endpt; 1469 int dir; 1470 1471 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1472 1473 err = usbd_interface_count(sc->sc_udev, &niface); 1474 if (err) 1475 return err; 1476 if (ifaceidx < 0 || ifaceidx >= niface) 1477 return USBD_INVAL; 1478 1479 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1480 if (err) 1481 return err; 1482 err = usbd_endpoint_count(iface, &nendpt); 1483 if (err) 1484 return err; 1485 1486 /* change setting */ 1487 err = usbd_set_interface(iface, altno); 1488 if (err) 1489 return err; 1490 1491 err = usbd_endpoint_count(iface, &nendpt); 1492 if (err) 1493 return err; 1494 1495 ugen_clear_endpoints(sc); 1496 1497 for (endptno = 0; endptno < nendpt; endptno++) { 1498 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1499 KASSERT(ed != NULL); 1500 endpt = ed->bEndpointAddress; 1501 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1502 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1503 sce->sc = sc; 1504 sce->edesc = ed; 1505 sce->iface = iface; 1506 } 1507 return 0; 1508 } 1509 1510 /* Retrieve a complete descriptor for a certain device and index. */ 1511 Static usb_config_descriptor_t * 1512 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1513 { 1514 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1515 int len; 1516 usbd_status err; 1517 1518 if (index == USB_CURRENT_CONFIG_INDEX) { 1519 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1520 if (tdesc == NULL) 1521 return NULL; 1522 len = UGETW(tdesc->wTotalLength); 1523 if (lenp) 1524 *lenp = len; 1525 cdesc = kmem_alloc(len, KM_SLEEP); 1526 memcpy(cdesc, tdesc, len); 1527 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1528 } else { 1529 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1530 if (err) 1531 return 0; 1532 len = UGETW(cdescr.wTotalLength); 1533 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1534 if (lenp) 1535 *lenp = len; 1536 cdesc = kmem_alloc(len, KM_SLEEP); 1537 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1538 if (err) { 1539 kmem_free(cdesc, len); 1540 return 0; 1541 } 1542 } 1543 return cdesc; 1544 } 1545 1546 Static int 1547 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1548 { 1549 struct usbd_interface *iface; 1550 usbd_status err; 1551 1552 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1553 if (err) 1554 return -1; 1555 return usbd_get_interface_altindex(iface); 1556 } 1557 1558 Static int 1559 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1560 void *addr, int flag, struct lwp *l) 1561 { 1562 struct ugen_endpoint *sce; 1563 usbd_status err; 1564 struct usbd_interface *iface; 1565 struct usb_config_desc *cd; 1566 usb_config_descriptor_t *cdesc; 1567 struct usb_interface_desc *id; 1568 usb_interface_descriptor_t *idesc; 1569 struct usb_endpoint_desc *ed; 1570 usb_endpoint_descriptor_t *edesc; 1571 struct usb_alt_interface *ai; 1572 struct usb_string_desc *si; 1573 uint8_t conf, alt; 1574 int cdesclen; 1575 int error; 1576 int dir; 1577 1578 KASSERT(KERNEL_LOCKED_P()); /* ugen_set_config */ 1579 1580 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1581 1582 switch (cmd) { 1583 case FIONBIO: 1584 /* All handled in the upper FS layer. */ 1585 return 0; 1586 case USB_SET_SHORT_XFER: 1587 if (endpt == USB_CONTROL_ENDPOINT) 1588 return EINVAL; 1589 /* This flag only affects read */ 1590 sce = &sc->sc_endpoints[endpt][IN]; 1591 if (sce == NULL || sce->pipeh == NULL) 1592 return EINVAL; 1593 if (*(int *)addr) 1594 sce->state |= UGEN_SHORT_OK; 1595 else 1596 sce->state &= ~UGEN_SHORT_OK; 1597 return 0; 1598 case USB_SET_TIMEOUT: 1599 for (dir = OUT; dir <= IN; dir++) { 1600 sce = &sc->sc_endpoints[endpt][dir]; 1601 if (sce == NULL) 1602 return EINVAL; 1603 1604 sce->timeout = *(int *)addr; 1605 } 1606 return 0; 1607 case USB_SET_BULK_RA: 1608 if (endpt == USB_CONTROL_ENDPOINT) 1609 return EINVAL; 1610 sce = &sc->sc_endpoints[endpt][IN]; 1611 if (sce == NULL || sce->pipeh == NULL) 1612 return EINVAL; 1613 edesc = sce->edesc; 1614 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1615 return EINVAL; 1616 1617 if (*(int *)addr) { 1618 /* Only turn RA on if it's currently off. */ 1619 if (sce->state & UGEN_BULK_RA) 1620 return 0; 1621 1622 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1623 /* shouldn't happen */ 1624 return EINVAL; 1625 error = usbd_create_xfer(sce->pipeh, 1626 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1627 if (error) 1628 return error; 1629 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1630 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1631 sce->fill = sce->cur = sce->ibuf; 1632 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1633 sce->ra_wb_used = 0; 1634 sce->state |= UGEN_BULK_RA; 1635 sce->state &= ~UGEN_RA_WB_STOP; 1636 /* Now start reading. */ 1637 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1638 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1639 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1640 err = usbd_transfer(sce->ra_wb_xfer); 1641 if (err != USBD_IN_PROGRESS) { 1642 sce->state &= ~UGEN_BULK_RA; 1643 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1644 sce->ibuf = NULL; 1645 usbd_destroy_xfer(sce->ra_wb_xfer); 1646 return EIO; 1647 } 1648 } else { 1649 /* Only turn RA off if it's currently on. */ 1650 if (!(sce->state & UGEN_BULK_RA)) 1651 return 0; 1652 1653 sce->state &= ~UGEN_BULK_RA; 1654 usbd_abort_pipe(sce->pipeh); 1655 usbd_destroy_xfer(sce->ra_wb_xfer); 1656 /* 1657 * XXX Discard whatever's in the buffer, but we 1658 * should keep it around and drain the buffer 1659 * instead. 1660 */ 1661 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1662 sce->ibuf = NULL; 1663 } 1664 return 0; 1665 case USB_SET_BULK_WB: 1666 if (endpt == USB_CONTROL_ENDPOINT) 1667 return EINVAL; 1668 sce = &sc->sc_endpoints[endpt][OUT]; 1669 if (sce == NULL || sce->pipeh == NULL) 1670 return EINVAL; 1671 edesc = sce->edesc; 1672 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1673 return EINVAL; 1674 1675 if (*(int *)addr) { 1676 /* Only turn WB on if it's currently off. */ 1677 if (sce->state & UGEN_BULK_WB) 1678 return 0; 1679 1680 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1681 /* shouldn't happen */ 1682 return EINVAL; 1683 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1684 0, 0, &sce->ra_wb_xfer); 1685 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1686 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1687 sce->fill = sce->cur = sce->ibuf; 1688 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1689 sce->ra_wb_used = 0; 1690 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1691 } else { 1692 /* Only turn WB off if it's currently on. */ 1693 if (!(sce->state & UGEN_BULK_WB)) 1694 return 0; 1695 1696 sce->state &= ~UGEN_BULK_WB; 1697 /* 1698 * XXX Discard whatever's in the buffer, but we 1699 * should keep it around and keep writing to 1700 * drain the buffer instead. 1701 */ 1702 usbd_abort_pipe(sce->pipeh); 1703 usbd_destroy_xfer(sce->ra_wb_xfer); 1704 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1705 sce->ibuf = NULL; 1706 } 1707 return 0; 1708 case USB_SET_BULK_RA_OPT: 1709 case USB_SET_BULK_WB_OPT: 1710 { 1711 struct usb_bulk_ra_wb_opt *opt; 1712 1713 if (endpt == USB_CONTROL_ENDPOINT) 1714 return EINVAL; 1715 opt = (struct usb_bulk_ra_wb_opt *)addr; 1716 if (cmd == USB_SET_BULK_RA_OPT) 1717 sce = &sc->sc_endpoints[endpt][IN]; 1718 else 1719 sce = &sc->sc_endpoints[endpt][OUT]; 1720 if (sce == NULL || sce->pipeh == NULL) 1721 return EINVAL; 1722 if (opt->ra_wb_buffer_size < 1 || 1723 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1724 opt->ra_wb_request_size < 1 || 1725 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1726 return EINVAL; 1727 /* 1728 * XXX These changes do not take effect until the 1729 * next time RA/WB mode is enabled but they ought to 1730 * take effect immediately. 1731 */ 1732 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1733 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1734 return 0; 1735 } 1736 default: 1737 break; 1738 } 1739 1740 if (endpt != USB_CONTROL_ENDPOINT) 1741 return EINVAL; 1742 1743 switch (cmd) { 1744 #ifdef UGEN_DEBUG 1745 case USB_SETDEBUG: 1746 ugendebug = *(int *)addr; 1747 break; 1748 #endif 1749 case USB_GET_CONFIG: 1750 err = usbd_get_config(sc->sc_udev, &conf); 1751 if (err) 1752 return EIO; 1753 *(int *)addr = conf; 1754 break; 1755 case USB_SET_CONFIG: 1756 if (!(flag & FWRITE)) 1757 return EPERM; 1758 err = ugen_set_config(sc, *(int *)addr, 1); 1759 switch (err) { 1760 case USBD_NORMAL_COMPLETION: 1761 break; 1762 case USBD_IN_USE: 1763 return EBUSY; 1764 default: 1765 return EIO; 1766 } 1767 break; 1768 case USB_GET_ALTINTERFACE: 1769 ai = (struct usb_alt_interface *)addr; 1770 err = usbd_device2interface_handle(sc->sc_udev, 1771 ai->uai_interface_index, &iface); 1772 if (err) 1773 return EINVAL; 1774 idesc = usbd_get_interface_descriptor(iface); 1775 if (idesc == NULL) 1776 return EIO; 1777 ai->uai_alt_no = idesc->bAlternateSetting; 1778 break; 1779 case USB_SET_ALTINTERFACE: 1780 if (!(flag & FWRITE)) 1781 return EPERM; 1782 ai = (struct usb_alt_interface *)addr; 1783 err = usbd_device2interface_handle(sc->sc_udev, 1784 ai->uai_interface_index, &iface); 1785 if (err) 1786 return EINVAL; 1787 err = ugen_set_interface(sc, ai->uai_interface_index, 1788 ai->uai_alt_no); 1789 if (err) 1790 return EINVAL; 1791 break; 1792 case USB_GET_NO_ALT: 1793 ai = (struct usb_alt_interface *)addr; 1794 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1795 if (cdesc == NULL) 1796 return EINVAL; 1797 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1798 if (idesc == NULL) { 1799 kmem_free(cdesc, cdesclen); 1800 return EINVAL; 1801 } 1802 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1803 idesc->bInterfaceNumber); 1804 kmem_free(cdesc, cdesclen); 1805 break; 1806 case USB_GET_DEVICE_DESC: 1807 *(usb_device_descriptor_t *)addr = 1808 *usbd_get_device_descriptor(sc->sc_udev); 1809 break; 1810 case USB_GET_CONFIG_DESC: 1811 cd = (struct usb_config_desc *)addr; 1812 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1813 if (cdesc == NULL) 1814 return EINVAL; 1815 cd->ucd_desc = *cdesc; 1816 kmem_free(cdesc, cdesclen); 1817 break; 1818 case USB_GET_INTERFACE_DESC: 1819 id = (struct usb_interface_desc *)addr; 1820 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1821 if (cdesc == NULL) 1822 return EINVAL; 1823 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1824 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1825 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1826 else 1827 alt = id->uid_alt_index; 1828 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1829 if (idesc == NULL) { 1830 kmem_free(cdesc, cdesclen); 1831 return EINVAL; 1832 } 1833 id->uid_desc = *idesc; 1834 kmem_free(cdesc, cdesclen); 1835 break; 1836 case USB_GET_ENDPOINT_DESC: 1837 ed = (struct usb_endpoint_desc *)addr; 1838 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1839 if (cdesc == NULL) 1840 return EINVAL; 1841 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1842 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1843 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1844 else 1845 alt = ed->ued_alt_index; 1846 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1847 alt, ed->ued_endpoint_index); 1848 if (edesc == NULL) { 1849 kmem_free(cdesc, cdesclen); 1850 return EINVAL; 1851 } 1852 ed->ued_desc = *edesc; 1853 kmem_free(cdesc, cdesclen); 1854 break; 1855 case USB_GET_FULL_DESC: 1856 { 1857 int len; 1858 struct iovec iov; 1859 struct uio uio; 1860 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1861 1862 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1863 if (cdesc == NULL) 1864 return EINVAL; 1865 len = cdesclen; 1866 if (len > fd->ufd_size) 1867 len = fd->ufd_size; 1868 iov.iov_base = (void *)fd->ufd_data; 1869 iov.iov_len = len; 1870 uio.uio_iov = &iov; 1871 uio.uio_iovcnt = 1; 1872 uio.uio_resid = len; 1873 uio.uio_offset = 0; 1874 uio.uio_rw = UIO_READ; 1875 uio.uio_vmspace = l->l_proc->p_vmspace; 1876 error = uiomove((void *)cdesc, len, &uio); 1877 kmem_free(cdesc, cdesclen); 1878 return error; 1879 } 1880 case USB_GET_STRING_DESC: { 1881 int len; 1882 si = (struct usb_string_desc *)addr; 1883 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1884 si->usd_language_id, &si->usd_desc, &len); 1885 if (err) 1886 return EINVAL; 1887 break; 1888 } 1889 case USB_DO_REQUEST: 1890 { 1891 struct usb_ctl_request *ur = (void *)addr; 1892 int len = UGETW(ur->ucr_request.wLength); 1893 struct iovec iov; 1894 struct uio uio; 1895 void *ptr = 0; 1896 usbd_status xerr; 1897 1898 error = 0; 1899 1900 if (!(flag & FWRITE)) 1901 return EPERM; 1902 /* Avoid requests that would damage the bus integrity. */ 1903 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1904 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1905 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1906 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1907 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1908 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1909 return EINVAL; 1910 1911 if (len < 0 || len > 32767) 1912 return EINVAL; 1913 if (len != 0) { 1914 iov.iov_base = (void *)ur->ucr_data; 1915 iov.iov_len = len; 1916 uio.uio_iov = &iov; 1917 uio.uio_iovcnt = 1; 1918 uio.uio_resid = len; 1919 uio.uio_offset = 0; 1920 uio.uio_rw = 1921 ur->ucr_request.bmRequestType & UT_READ ? 1922 UIO_READ : UIO_WRITE; 1923 uio.uio_vmspace = l->l_proc->p_vmspace; 1924 ptr = kmem_alloc(len, KM_SLEEP); 1925 if (uio.uio_rw == UIO_WRITE) { 1926 error = uiomove(ptr, len, &uio); 1927 if (error) 1928 goto ret; 1929 } 1930 } 1931 sce = &sc->sc_endpoints[endpt][IN]; 1932 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1933 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1934 if (xerr) { 1935 error = EIO; 1936 goto ret; 1937 } 1938 if (len != 0) { 1939 if (uio.uio_rw == UIO_READ) { 1940 size_t alen = uimin(len, ur->ucr_actlen); 1941 error = uiomove(ptr, alen, &uio); 1942 if (error) 1943 goto ret; 1944 } 1945 } 1946 ret: 1947 if (ptr) 1948 kmem_free(ptr, len); 1949 return error; 1950 } 1951 case USB_GET_DEVICEINFO: 1952 usbd_fill_deviceinfo(sc->sc_udev, 1953 (struct usb_device_info *)addr, 0); 1954 break; 1955 case USB_GET_DEVICEINFO_OLD: 1956 { 1957 int ret; 1958 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1959 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1960 usbd_devinfo_vp, usbd_printBCD), 1961 enosys(), ret); 1962 if (ret == 0) 1963 return 0; 1964 return EINVAL; 1965 } 1966 default: 1967 return EINVAL; 1968 } 1969 return 0; 1970 } 1971 1972 static int 1973 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1974 { 1975 int endpt = UGENENDPOINT(dev); 1976 struct ugen_softc *sc; 1977 int error; 1978 1979 if ((sc = ugenif_acquire(UGENUNIT(dev))) == 0) 1980 return ENXIO; 1981 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1982 ugenif_release(sc); 1983 1984 return error; 1985 } 1986 1987 static int 1988 ugenpoll(dev_t dev, int events, struct lwp *l) 1989 { 1990 struct ugen_softc *sc; 1991 struct ugen_endpoint *sce_in, *sce_out; 1992 int revents = 0; 1993 1994 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1995 return POLLHUP; 1996 1997 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 1998 revents |= POLLERR; 1999 goto out; 2000 } 2001 2002 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2003 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2004 KASSERT(sce_in->edesc || sce_out->edesc); 2005 KASSERT(sce_in->pipeh || sce_out->pipeh); 2006 2007 mutex_enter(&sc->sc_lock); 2008 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 2009 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 2010 case UE_INTERRUPT: 2011 if (sce_in->q.c_cc > 0) 2012 revents |= events & (POLLIN | POLLRDNORM); 2013 else 2014 selrecord(l, &sce_in->rsel); 2015 break; 2016 case UE_ISOCHRONOUS: 2017 if (sce_in->cur != sce_in->fill) 2018 revents |= events & (POLLIN | POLLRDNORM); 2019 else 2020 selrecord(l, &sce_in->rsel); 2021 break; 2022 case UE_BULK: 2023 if (sce_in->state & UGEN_BULK_RA) { 2024 if (sce_in->ra_wb_used > 0) 2025 revents |= events & 2026 (POLLIN | POLLRDNORM); 2027 else 2028 selrecord(l, &sce_in->rsel); 2029 break; 2030 } 2031 /* 2032 * We have no easy way of determining if a read will 2033 * yield any data or a write will happen. 2034 * Pretend they will. 2035 */ 2036 revents |= events & (POLLIN | POLLRDNORM); 2037 break; 2038 default: 2039 break; 2040 } 2041 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 2042 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 2043 case UE_INTERRUPT: 2044 case UE_ISOCHRONOUS: 2045 /* XXX unimplemented */ 2046 break; 2047 case UE_BULK: 2048 if (sce_out->state & UGEN_BULK_WB) { 2049 if (sce_out->ra_wb_used < 2050 sce_out->limit - sce_out->ibuf) 2051 revents |= events & 2052 (POLLOUT | POLLWRNORM); 2053 else 2054 selrecord(l, &sce_out->rsel); 2055 break; 2056 } 2057 /* 2058 * We have no easy way of determining if a read will 2059 * yield any data or a write will happen. 2060 * Pretend they will. 2061 */ 2062 revents |= events & (POLLOUT | POLLWRNORM); 2063 break; 2064 default: 2065 break; 2066 } 2067 2068 mutex_exit(&sc->sc_lock); 2069 2070 out: ugenif_release(sc); 2071 return revents; 2072 } 2073 2074 static void 2075 filt_ugenrdetach(struct knote *kn) 2076 { 2077 struct ugen_endpoint *sce = kn->kn_hook; 2078 struct ugen_softc *sc = sce->sc; 2079 2080 mutex_enter(&sc->sc_lock); 2081 selremove_knote(&sce->rsel, kn); 2082 mutex_exit(&sc->sc_lock); 2083 } 2084 2085 static int 2086 filt_ugenread_intr(struct knote *kn, long hint) 2087 { 2088 struct ugen_endpoint *sce = kn->kn_hook; 2089 struct ugen_softc *sc = sce->sc; 2090 int ret; 2091 2092 mutex_enter(&sc->sc_lock); 2093 if (sc->sc_dying) { 2094 ret = 0; 2095 } else { 2096 kn->kn_data = sce->q.c_cc; 2097 ret = kn->kn_data > 0; 2098 } 2099 mutex_exit(&sc->sc_lock); 2100 2101 return ret; 2102 } 2103 2104 static int 2105 filt_ugenread_isoc(struct knote *kn, long hint) 2106 { 2107 struct ugen_endpoint *sce = kn->kn_hook; 2108 struct ugen_softc *sc = sce->sc; 2109 int ret; 2110 2111 mutex_enter(&sc->sc_lock); 2112 if (sc->sc_dying) { 2113 ret = 0; 2114 } else if (sce->cur == sce->fill) { 2115 ret = 0; 2116 } else if (sce->cur < sce->fill) { 2117 kn->kn_data = sce->fill - sce->cur; 2118 ret = 1; 2119 } else { 2120 kn->kn_data = (sce->limit - sce->cur) + 2121 (sce->fill - sce->ibuf); 2122 ret = 1; 2123 } 2124 mutex_exit(&sc->sc_lock); 2125 2126 return ret; 2127 } 2128 2129 static int 2130 filt_ugenread_bulk(struct knote *kn, long hint) 2131 { 2132 struct ugen_endpoint *sce = kn->kn_hook; 2133 struct ugen_softc *sc = sce->sc; 2134 int ret; 2135 2136 mutex_enter(&sc->sc_lock); 2137 if (sc->sc_dying) { 2138 ret = 0; 2139 } else if (!(sce->state & UGEN_BULK_RA)) { 2140 /* 2141 * We have no easy way of determining if a read will 2142 * yield any data or a write will happen. 2143 * So, emulate "seltrue". 2144 */ 2145 ret = filt_seltrue(kn, hint); 2146 } else if (sce->ra_wb_used == 0) { 2147 ret = 0; 2148 } else { 2149 kn->kn_data = sce->ra_wb_used; 2150 ret = 1; 2151 } 2152 mutex_exit(&sc->sc_lock); 2153 2154 return ret; 2155 } 2156 2157 static int 2158 filt_ugenwrite_bulk(struct knote *kn, long hint) 2159 { 2160 struct ugen_endpoint *sce = kn->kn_hook; 2161 struct ugen_softc *sc = sce->sc; 2162 int ret; 2163 2164 mutex_enter(&sc->sc_lock); 2165 if (sc->sc_dying) { 2166 ret = 0; 2167 } else if (!(sce->state & UGEN_BULK_WB)) { 2168 /* 2169 * We have no easy way of determining if a read will 2170 * yield any data or a write will happen. 2171 * So, emulate "seltrue". 2172 */ 2173 ret = filt_seltrue(kn, hint); 2174 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2175 ret = 0; 2176 } else { 2177 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2178 ret = 1; 2179 } 2180 mutex_exit(&sc->sc_lock); 2181 2182 return ret; 2183 } 2184 2185 static const struct filterops ugenread_intr_filtops = { 2186 .f_isfd = 1, 2187 .f_attach = NULL, 2188 .f_detach = filt_ugenrdetach, 2189 .f_event = filt_ugenread_intr, 2190 }; 2191 2192 static const struct filterops ugenread_isoc_filtops = { 2193 .f_isfd = 1, 2194 .f_attach = NULL, 2195 .f_detach = filt_ugenrdetach, 2196 .f_event = filt_ugenread_isoc, 2197 }; 2198 2199 static const struct filterops ugenread_bulk_filtops = { 2200 .f_isfd = 1, 2201 .f_attach = NULL, 2202 .f_detach = filt_ugenrdetach, 2203 .f_event = filt_ugenread_bulk, 2204 }; 2205 2206 static const struct filterops ugenwrite_bulk_filtops = { 2207 .f_isfd = 1, 2208 .f_attach = NULL, 2209 .f_detach = filt_ugenrdetach, 2210 .f_event = filt_ugenwrite_bulk, 2211 }; 2212 2213 static int 2214 ugenkqfilter(dev_t dev, struct knote *kn) 2215 { 2216 struct ugen_softc *sc; 2217 struct ugen_endpoint *sce; 2218 struct selinfo *sip; 2219 int error; 2220 2221 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2222 return ENXIO; 2223 2224 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2225 error = ENODEV; 2226 goto out; 2227 } 2228 2229 switch (kn->kn_filter) { 2230 case EVFILT_READ: 2231 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2232 if (sce == NULL) { 2233 error = EINVAL; 2234 goto out; 2235 } 2236 2237 sip = &sce->rsel; 2238 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2239 case UE_INTERRUPT: 2240 kn->kn_fop = &ugenread_intr_filtops; 2241 break; 2242 case UE_ISOCHRONOUS: 2243 kn->kn_fop = &ugenread_isoc_filtops; 2244 break; 2245 case UE_BULK: 2246 kn->kn_fop = &ugenread_bulk_filtops; 2247 break; 2248 default: 2249 error = EINVAL; 2250 goto out; 2251 } 2252 break; 2253 2254 case EVFILT_WRITE: 2255 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 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 case UE_ISOCHRONOUS: 2265 /* XXX poll doesn't support this */ 2266 error = EINVAL; 2267 goto out; 2268 2269 case UE_BULK: 2270 kn->kn_fop = &ugenwrite_bulk_filtops; 2271 break; 2272 default: 2273 error = EINVAL; 2274 goto out; 2275 } 2276 break; 2277 2278 default: 2279 error = EINVAL; 2280 goto out; 2281 } 2282 2283 kn->kn_hook = sce; 2284 2285 mutex_enter(&sc->sc_lock); 2286 selrecord_knote(sip, kn); 2287 mutex_exit(&sc->sc_lock); 2288 2289 error = 0; 2290 2291 out: ugenif_release(sc); 2292 return error; 2293 } 2294 2295 MODULE(MODULE_CLASS_DRIVER, ugen, NULL); 2296 2297 static int 2298 ugen_modcmd(modcmd_t cmd, void *aux) 2299 { 2300 2301 switch (cmd) { 2302 case MODULE_CMD_INIT: 2303 mutex_init(&ugenif.lock, MUTEX_DEFAULT, IPL_NONE); 2304 rb_tree_init(&ugenif.tree, &ugenif_tree_ops); 2305 return 0; 2306 default: 2307 return ENOTTY; 2308 } 2309 } 2310
Indexes created Fri Sep 26 08:10:20 GMT 2025