ugen.c revision 1.171.2.1
1 /* $NetBSD: ugen.c,v 1.171.2.1 2024/04/16 18:45:39 martin 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 1.171.2.1 2024/04/16 18:45:39 martin 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 #include <dev/usb/usbhist.h> 68 69 #include "ioconf.h" 70 71 #ifdef USB_DEBUG 72 #ifndef UGEN_DEBUG 73 #define ugendebug 0 74 #else 75 int ugendebug = 0; 76 77 SYSCTL_SETUP(sysctl_hw_ugen_setup, "sysctl hw.ugen setup") 78 { 79 int err; 80 const struct sysctlnode *rnode; 81 const struct sysctlnode *cnode; 82 83 err = sysctl_createv(clog, 0, NULL, &rnode, 84 CTLFLAG_PERMANENT, CTLTYPE_NODE, "ugen", 85 SYSCTL_DESCR("ugen global controls"), 86 NULL, 0, NULL, 0, CTL_HW, CTL_CREATE, CTL_EOL); 87 88 if (err) 89 goto fail; 90 91 /* control debugging printfs */ 92 err = sysctl_createv(clog, 0, &rnode, &cnode, 93 CTLFLAG_PERMANENT|CTLFLAG_READWRITE, CTLTYPE_INT, 94 "debug", SYSCTL_DESCR("Enable debugging output"), 95 NULL, 0, &ugendebug, sizeof(ugendebug), CTL_CREATE, CTL_EOL); 96 if (err) 97 goto fail; 98 99 return; 100 fail: 101 aprint_error("%s: sysctl_createv failed (err = %d)\n", __func__, err); 102 } 103 104 #endif /* UGEN_DEBUG */ 105 #endif /* USB_DEBUG */ 106 107 #define DPRINTF(FMT,A,B,C,D) USBHIST_LOGN(ugendebug,1,FMT,A,B,C,D) 108 #define DPRINTFN(N,FMT,A,B,C,D) USBHIST_LOGN(ugendebug,N,FMT,A,B,C,D) 109 #define UGENHIST_FUNC() USBHIST_FUNC() 110 #define UGENHIST_CALLED(name) USBHIST_CALLED(ugendebug) 111 112 #define UGEN_CHUNK 128 /* chunk size for read */ 113 #define UGEN_IBSIZE 1020 /* buffer size */ 114 #define UGEN_BBSIZE 1024 115 116 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 117 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 118 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 119 120 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 121 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 122 123 struct isoreq { 124 struct ugen_endpoint *sce; 125 struct usbd_xfer *xfer; 126 void *dmabuf; 127 uint16_t sizes[UGEN_NISORFRMS]; 128 }; 129 130 struct ugen_endpoint { 131 struct ugen_softc *sc; 132 usb_endpoint_descriptor_t *edesc; 133 struct usbd_interface *iface; 134 int state; 135 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 136 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 137 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 138 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 139 struct usbd_pipe *pipeh; 140 struct clist q; 141 u_char *ibuf; /* start of buffer (circular for isoc) */ 142 u_char *fill; /* location for input (isoc) */ 143 u_char *limit; /* end of circular buffer (isoc) */ 144 u_char *cur; /* current read location (isoc) */ 145 uint32_t timeout; 146 uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 147 uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 148 uint32_t ra_wb_used; /* how much is in buffer */ 149 uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 150 struct usbd_xfer *ra_wb_xfer; 151 struct isoreq isoreqs[UGEN_NISOREQS]; 152 /* Keep these last; we don't overwrite them in ugen_set_config() */ 153 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 154 struct selinfo rsel; 155 kcondvar_t cv; 156 }; 157 158 struct ugen_softc { 159 device_t sc_dev; /* base device */ 160 struct usbd_device *sc_udev; 161 struct rb_node sc_node; 162 unsigned sc_unit; 163 164 kmutex_t sc_lock; 165 kcondvar_t sc_detach_cv; 166 167 char sc_is_open[USB_MAX_ENDPOINTS]; 168 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 169 #define OUT 0 170 #define IN 1 171 172 int sc_refcnt; 173 char sc_buffer[UGEN_BBSIZE]; 174 u_char sc_dying; 175 u_char sc_attached; 176 }; 177 178 static struct { 179 kmutex_t lock; 180 rb_tree_t tree; 181 } ugenif __cacheline_aligned; 182 183 static int 184 compare_ugen(void *cookie, const void *vsca, const void *vscb) 185 { 186 const struct ugen_softc *sca = vsca; 187 const struct ugen_softc *scb = vscb; 188 189 if (sca->sc_unit < scb->sc_unit) 190 return -1; 191 if (sca->sc_unit > scb->sc_unit) 192 return +1; 193 return 0; 194 } 195 196 static int 197 compare_ugen_key(void *cookie, const void *vsc, const void *vk) 198 { 199 const struct ugen_softc *sc = vsc; 200 const unsigned *k = vk; 201 202 if (sc->sc_unit < *k) 203 return -1; 204 if (sc->sc_unit > *k) 205 return +1; 206 return 0; 207 } 208 209 static const rb_tree_ops_t ugenif_tree_ops = { 210 .rbto_compare_nodes = compare_ugen, 211 .rbto_compare_key = compare_ugen_key, 212 .rbto_node_offset = offsetof(struct ugen_softc, sc_node), 213 }; 214 215 static void 216 ugenif_get_unit(struct ugen_softc *sc) 217 { 218 struct ugen_softc *sc0; 219 unsigned i; 220 221 mutex_enter(&ugenif.lock); 222 for (i = 0, sc0 = RB_TREE_MIN(&ugenif.tree); 223 sc0 != NULL && i == sc0->sc_unit; 224 i++, sc0 = RB_TREE_NEXT(&ugenif.tree, sc0)) 225 KASSERT(i < UINT_MAX); 226 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == NULL); 227 sc->sc_unit = i; 228 sc0 = rb_tree_insert_node(&ugenif.tree, sc); 229 KASSERT(sc0 == sc); 230 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == sc); 231 mutex_exit(&ugenif.lock); 232 } 233 234 static void 235 ugenif_put_unit(struct ugen_softc *sc) 236 { 237 238 mutex_enter(&ugenif.lock); 239 KASSERT(rb_tree_find_node(&ugenif.tree, &sc->sc_unit) == sc); 240 rb_tree_remove_node(&ugenif.tree, sc); 241 sc->sc_unit = -1; 242 mutex_exit(&ugenif.lock); 243 } 244 245 static struct ugen_softc * 246 ugenif_acquire(unsigned unit) 247 { 248 struct ugen_softc *sc; 249 250 mutex_enter(&ugenif.lock); 251 sc = rb_tree_find_node(&ugenif.tree, &unit); 252 if (sc == NULL) 253 goto out; 254 mutex_enter(&sc->sc_lock); 255 if (sc->sc_dying) { 256 mutex_exit(&sc->sc_lock); 257 sc = NULL; 258 goto out; 259 } 260 KASSERT(sc->sc_refcnt < INT_MAX); 261 sc->sc_refcnt++; 262 mutex_exit(&sc->sc_lock); 263 out: mutex_exit(&ugenif.lock); 264 265 return sc; 266 } 267 268 static void 269 ugenif_release(struct ugen_softc *sc) 270 { 271 272 mutex_enter(&sc->sc_lock); 273 if (--sc->sc_refcnt < 0) 274 cv_broadcast(&sc->sc_detach_cv); 275 mutex_exit(&sc->sc_lock); 276 } 277 278 static dev_type_open(ugenopen); 279 static dev_type_close(ugenclose); 280 static dev_type_read(ugenread); 281 static dev_type_write(ugenwrite); 282 static dev_type_ioctl(ugenioctl); 283 static dev_type_poll(ugenpoll); 284 static dev_type_kqfilter(ugenkqfilter); 285 286 const struct cdevsw ugen_cdevsw = { 287 .d_open = ugenopen, 288 .d_close = ugenclose, 289 .d_read = ugenread, 290 .d_write = ugenwrite, 291 .d_ioctl = ugenioctl, 292 .d_stop = nostop, 293 .d_tty = notty, 294 .d_poll = ugenpoll, 295 .d_mmap = nommap, 296 .d_kqfilter = ugenkqfilter, 297 .d_discard = nodiscard, 298 .d_flag = D_OTHER, 299 }; 300 301 Static void ugenintr(struct usbd_xfer *, void *, 302 usbd_status); 303 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 304 usbd_status); 305 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 306 usbd_status); 307 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 308 usbd_status); 309 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 310 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 311 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 312 void *, int, struct lwp *); 313 Static int ugen_set_config(struct ugen_softc *, int, int); 314 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 315 int, int *); 316 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 317 Static int ugen_get_alt_index(struct ugen_softc *, int); 318 Static void ugen_clear_endpoints(struct ugen_softc *); 319 320 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 321 #define UGENENDPOINT(n) (minor(n) & 0xf) 322 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 323 324 static int ugenif_match(device_t, cfdata_t, void *); 325 static void ugenif_attach(device_t, device_t, void *); 326 static int ugen_match(device_t, cfdata_t, void *); 327 static void ugen_attach(device_t, device_t, void *); 328 static int ugen_detach(device_t, int); 329 static int ugen_activate(device_t, enum devact); 330 331 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 332 ugen_attach, ugen_detach, ugen_activate); 333 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 334 ugenif_attach, ugen_detach, ugen_activate); 335 336 /* toggle to control attach priority. -1 means "let autoconf decide" */ 337 int ugen_override = -1; 338 339 static int 340 ugen_match(device_t parent, cfdata_t match, void *aux) 341 { 342 struct usb_attach_arg *uaa = aux; 343 int override; 344 345 if (ugen_override != -1) 346 override = ugen_override; 347 else 348 override = match->cf_flags & 1; 349 350 if (override) 351 return UMATCH_HIGHEST; 352 else if (uaa->uaa_usegeneric) 353 return UMATCH_GENERIC; 354 else 355 return UMATCH_NONE; 356 } 357 358 static int 359 ugenif_match(device_t parent, cfdata_t match, void *aux) 360 { 361 /* 362 * Like ugen(4), ugenif(4) also has an override flag. It has the 363 * opposite effect, however, causing us to match with GENERIC 364 * priority rather than HIGHEST. 365 */ 366 return (match->cf_flags & 1) ? UMATCH_GENERIC : UMATCH_HIGHEST; 367 } 368 369 static void 370 ugen_attach(device_t parent, device_t self, void *aux) 371 { 372 struct usb_attach_arg *uaa = aux; 373 struct usbif_attach_arg uiaa; 374 375 memset(&uiaa, 0, sizeof(uiaa)); 376 uiaa.uiaa_port = uaa->uaa_port; 377 uiaa.uiaa_vendor = uaa->uaa_vendor; 378 uiaa.uiaa_product = uaa->uaa_product; 379 uiaa.uiaa_release = uaa->uaa_release; 380 uiaa.uiaa_device = uaa->uaa_device; 381 uiaa.uiaa_configno = -1; 382 uiaa.uiaa_ifaceno = -1; 383 384 ugenif_attach(parent, self, &uiaa); 385 } 386 387 static void 388 ugenif_attach(device_t parent, device_t self, void *aux) 389 { 390 struct ugen_softc *sc = device_private(self); 391 struct usbif_attach_arg *uiaa = aux; 392 struct usbd_device *udev; 393 char *devinfop; 394 usbd_status err; 395 int i, dir, conf; 396 397 aprint_naive("\n"); 398 aprint_normal("\n"); 399 400 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 401 cv_init(&sc->sc_detach_cv, "ugendet"); 402 403 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 404 aprint_normal_dev(self, "%s\n", devinfop); 405 usbd_devinfo_free(devinfop); 406 407 sc->sc_dev = self; 408 sc->sc_udev = udev = uiaa->uiaa_device; 409 410 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 411 for (dir = OUT; dir <= IN; dir++) { 412 struct ugen_endpoint *sce; 413 414 sce = &sc->sc_endpoints[i][dir]; 415 selinit(&sce->rsel); 416 cv_init(&sce->cv, "ugensce"); 417 } 418 } 419 420 if (!pmf_device_register(self, NULL, NULL)) 421 aprint_error_dev(self, "couldn't establish power handler\n"); 422 423 if (uiaa->uiaa_ifaceno < 0) { 424 /* 425 * If we attach the whole device, 426 * set configuration index 0, the default one. 427 */ 428 err = usbd_set_config_index(udev, 0, 0); 429 if (err) { 430 aprint_error_dev(self, 431 "setting configuration index 0 failed\n"); 432 return; 433 } 434 } 435 436 /* Get current configuration */ 437 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 438 439 /* Set up all the local state for this configuration. */ 440 err = ugen_set_config(sc, conf, uiaa->uiaa_ifaceno < 0); 441 if (err) { 442 aprint_error_dev(self, "setting configuration %d failed\n", 443 conf); 444 return; 445 } 446 447 ugenif_get_unit(sc); 448 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 449 sc->sc_attached = 1; 450 } 451 452 Static void 453 ugen_clear_endpoints(struct ugen_softc *sc) 454 { 455 456 /* Clear out the old info, but leave the selinfo and cv initialised. */ 457 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 458 for (int dir = OUT; dir <= IN; dir++) { 459 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 460 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 461 } 462 } 463 } 464 465 Static int 466 ugen_set_config(struct ugen_softc *sc, int configno, int chkopen) 467 { 468 struct usbd_device *dev = sc->sc_udev; 469 usb_config_descriptor_t *cdesc; 470 struct usbd_interface *iface; 471 usb_endpoint_descriptor_t *ed; 472 struct ugen_endpoint *sce; 473 uint8_t niface, nendpt; 474 int ifaceno, endptno, endpt; 475 usbd_status err; 476 int dir; 477 478 UGENHIST_FUNC(); UGENHIST_CALLED(); 479 480 DPRINTFN(1, "ugen%jd: to configno %jd, sc=%jx", 481 device_unit(sc->sc_dev), configno, (uintptr_t)sc, 0); 482 483 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 484 485 if (chkopen) { 486 /* 487 * We start at 1, not 0, because we don't care whether the 488 * control endpoint is open or not. It is always present. 489 */ 490 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 491 if (sc->sc_is_open[endptno]) { 492 DPRINTFN(1, 493 "ugen%jd - endpoint %d is open", 494 device_unit(sc->sc_dev), endptno, 0, 0); 495 return USBD_IN_USE; 496 } 497 498 /* Prevent opening while we're setting the config. */ 499 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) { 500 KASSERT(!sc->sc_is_open[endptno]); 501 sc->sc_is_open[endptno] = 1; 502 } 503 } 504 505 /* Avoid setting the current value. */ 506 cdesc = usbd_get_config_descriptor(dev); 507 if (!cdesc || cdesc->bConfigurationValue != configno) { 508 err = usbd_set_config_no(dev, configno, 1); 509 if (err) 510 goto out; 511 } 512 513 ugen_clear_endpoints(sc); 514 515 err = usbd_interface_count(dev, &niface); 516 if (err) 517 goto out; 518 519 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 520 DPRINTFN(1, "ifaceno %jd", ifaceno, 0, 0, 0); 521 err = usbd_device2interface_handle(dev, ifaceno, &iface); 522 if (err) 523 goto out; 524 err = usbd_endpoint_count(iface, &nendpt); 525 if (err) 526 goto out; 527 for (endptno = 0; endptno < nendpt; endptno++) { 528 ed = usbd_interface2endpoint_descriptor(iface,endptno); 529 KASSERT(ed != NULL); 530 endpt = ed->bEndpointAddress; 531 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 532 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 533 DPRINTFN(1, "endptno %jd, endpt=0x%02jx (%jd,%jd)", 534 endptno, endpt, UE_GET_ADDR(endpt), 535 UE_GET_DIR(endpt)); 536 sce->sc = sc; 537 sce->edesc = ed; 538 sce->iface = iface; 539 } 540 } 541 err = USBD_NORMAL_COMPLETION; 542 543 out: if (chkopen) { 544 /* 545 * Allow open again now that we're done trying to set 546 * the config. 547 */ 548 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) { 549 KASSERT(sc->sc_is_open[endptno]); 550 sc->sc_is_open[endptno] = 0; 551 } 552 } 553 return err; 554 } 555 556 static int 557 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 558 { 559 struct ugen_softc *sc; 560 int unit = UGENUNIT(dev); 561 int endpt = UGENENDPOINT(dev); 562 usb_endpoint_descriptor_t *edesc; 563 struct ugen_endpoint *sce; 564 int dir, isize; 565 usbd_status err; 566 struct usbd_xfer *xfer; 567 int i, j; 568 int error; 569 int opened = 0; 570 571 UGENHIST_FUNC(); UGENHIST_CALLED(); 572 573 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 574 575 if ((sc = ugenif_acquire(unit)) == NULL) 576 return ENXIO; 577 578 DPRINTFN(5, "flag=%jd, mode=%jd, unit=%jd endpt=%jd", 579 flag, mode, unit, endpt); 580 581 /* The control endpoint allows multiple opens. */ 582 if (endpt == USB_CONTROL_ENDPOINT) { 583 opened = sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 584 error = 0; 585 goto out; 586 } 587 588 if (sc->sc_is_open[endpt]) { 589 error = EBUSY; 590 goto out; 591 } 592 opened = sc->sc_is_open[endpt] = 1; 593 594 /* Make sure there are pipes for all directions. */ 595 for (dir = OUT; dir <= IN; dir++) { 596 if (flag & (dir == OUT ? FWRITE : FREAD)) { 597 sce = &sc->sc_endpoints[endpt][dir]; 598 if (sce->edesc == NULL) { 599 error = ENXIO; 600 goto out; 601 } 602 } 603 } 604 605 /* Actually open the pipes. */ 606 /* XXX Should back out properly if it fails. */ 607 for (dir = OUT; dir <= IN; dir++) { 608 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 609 continue; 610 sce = &sc->sc_endpoints[endpt][dir]; 611 sce->state = 0; 612 sce->timeout = USBD_NO_TIMEOUT; 613 DPRINTFN(5, "sc=%jx, endpt=%jd, dir=%jd, sce=%jp", 614 (uintptr_t)sc, endpt, dir, (uintptr_t)sce); 615 edesc = sce->edesc; 616 switch (edesc->bmAttributes & UE_XFERTYPE) { 617 case UE_INTERRUPT: 618 if (dir == OUT) { 619 err = usbd_open_pipe(sce->iface, 620 edesc->bEndpointAddress, 0, &sce->pipeh); 621 if (err) { 622 error = EIO; 623 goto out; 624 } 625 break; 626 } 627 isize = UGETW(edesc->wMaxPacketSize); 628 if (isize == 0) { /* shouldn't happen */ 629 error = EINVAL; 630 goto out; 631 } 632 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 633 DPRINTFN(5, "intr endpt=%d, isize=%d", 634 endpt, isize, 0, 0); 635 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 636 kmem_free(sce->ibuf, isize); 637 sce->ibuf = NULL; 638 error = ENOMEM; 639 goto out; 640 } 641 err = usbd_open_pipe_intr(sce->iface, 642 edesc->bEndpointAddress, 643 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 644 sce->ibuf, isize, ugenintr, 645 USBD_DEFAULT_INTERVAL); 646 if (err) { 647 clfree(&sce->q); 648 kmem_free(sce->ibuf, isize); 649 sce->ibuf = NULL; 650 error = EIO; 651 goto out; 652 } 653 DPRINTFN(5, "interrupt open done", 0, 0, 0, 0); 654 break; 655 case UE_BULK: 656 err = usbd_open_pipe(sce->iface, 657 edesc->bEndpointAddress, 0, &sce->pipeh); 658 if (err) { 659 error = EIO; 660 goto out; 661 } 662 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 663 /* 664 * Use request size for non-RA/WB transfers 665 * as the default. 666 */ 667 sce->ra_wb_reqsize = UGEN_BBSIZE; 668 break; 669 case UE_ISOCHRONOUS: 670 if (dir == OUT) { 671 error = EINVAL; 672 goto out; 673 } 674 isize = UGETW(edesc->wMaxPacketSize); 675 if (isize == 0) { /* shouldn't happen */ 676 error = EINVAL; 677 goto out; 678 } 679 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 680 KM_SLEEP); 681 sce->cur = sce->fill = sce->ibuf; 682 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 683 DPRINTFN(5, "isoc endpt=%d, isize=%d", 684 endpt, isize, 0, 0); 685 err = usbd_open_pipe(sce->iface, 686 edesc->bEndpointAddress, 0, &sce->pipeh); 687 if (err) { 688 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 689 sce->ibuf = NULL; 690 error = EIO; 691 goto out; 692 } 693 for (i = 0; i < UGEN_NISOREQS; ++i) { 694 sce->isoreqs[i].sce = sce; 695 err = usbd_create_xfer(sce->pipeh, 696 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 697 &xfer); 698 if (err) 699 goto bad; 700 sce->isoreqs[i].xfer = xfer; 701 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 702 for (j = 0; j < UGEN_NISORFRMS; ++j) 703 sce->isoreqs[i].sizes[j] = isize; 704 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 705 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 706 ugen_isoc_rintr); 707 (void)usbd_transfer(xfer); 708 } 709 DPRINTFN(5, "isoc open done", 0, 0, 0, 0); 710 break; 711 bad: 712 while (--i >= 0) { /* implicit buffer free */ 713 usbd_destroy_xfer(sce->isoreqs[i].xfer); 714 sce->isoreqs[i].xfer = NULL; 715 } 716 usbd_close_pipe(sce->pipeh); 717 sce->pipeh = NULL; 718 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 719 sce->ibuf = NULL; 720 error = ENOMEM; 721 goto out; 722 case UE_CONTROL: 723 sce->timeout = USBD_DEFAULT_TIMEOUT; 724 error = EINVAL; 725 goto out; 726 } 727 } 728 error = 0; 729 out: if (error && opened) 730 sc->sc_is_open[endpt] = 0; 731 ugenif_release(sc); 732 return error; 733 } 734 735 static void 736 ugen_do_close(struct ugen_softc *sc, int flag, int endpt) 737 { 738 struct ugen_endpoint *sce; 739 int dir; 740 int i; 741 742 UGENHIST_FUNC(); UGENHIST_CALLED(); 743 744 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 745 746 if (!sc->sc_is_open[endpt]) 747 goto out; 748 749 if (endpt == USB_CONTROL_ENDPOINT) { 750 DPRINTFN(5, "close control", 0, 0, 0, 0); 751 goto out; 752 } 753 754 for (dir = OUT; dir <= IN; dir++) { 755 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 756 continue; 757 sce = &sc->sc_endpoints[endpt][dir]; 758 if (sce->pipeh == NULL) 759 continue; 760 DPRINTFN(5, "endpt=%jd dir=%jd sce=%jx", 761 endpt, dir, (uintptr_t)sce, 0); 762 763 usbd_abort_pipe(sce->pipeh); 764 765 int isize = UGETW(sce->edesc->wMaxPacketSize); 766 int msize = 0; 767 768 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 769 case UE_INTERRUPT: 770 ndflush(&sce->q, sce->q.c_cc); 771 clfree(&sce->q); 772 msize = isize; 773 break; 774 case UE_ISOCHRONOUS: 775 for (i = 0; i < UGEN_NISOREQS; ++i) { 776 usbd_destroy_xfer(sce->isoreqs[i].xfer); 777 sce->isoreqs[i].xfer = NULL; 778 } 779 msize = isize * UGEN_NISOFRAMES; 780 break; 781 case UE_BULK: 782 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 783 usbd_destroy_xfer(sce->ra_wb_xfer); 784 sce->ra_wb_xfer = NULL; 785 msize = sce->ra_wb_bufsize; 786 } 787 break; 788 default: 789 break; 790 } 791 usbd_close_pipe(sce->pipeh); 792 sce->pipeh = NULL; 793 if (sce->ibuf != NULL) { 794 kmem_free(sce->ibuf, msize); 795 sce->ibuf = NULL; 796 } 797 } 798 799 out: sc->sc_is_open[endpt] = 0; 800 for (dir = OUT; dir <= IN; dir++) { 801 sce = &sc->sc_endpoints[endpt][dir]; 802 KASSERT(sce->pipeh == NULL); 803 KASSERT(sce->ibuf == NULL); 804 KASSERT(sce->ra_wb_xfer == NULL); 805 for (i = 0; i < UGEN_NISOREQS; i++) 806 KASSERT(sce->isoreqs[i].xfer == NULL); 807 } 808 } 809 810 static int 811 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 812 { 813 int endpt = UGENENDPOINT(dev); 814 struct ugen_softc *sc; 815 816 UGENHIST_FUNC(); UGENHIST_CALLED(); 817 818 DPRINTFN(5, "flag=%jd, mode=%jd, unit=%jd, endpt=%jd", 819 flag, mode, UGENUNIT(dev), endpt); 820 821 KASSERT(KERNEL_LOCKED_P()); /* ugen_do_close */ 822 823 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 824 return ENXIO; 825 826 KASSERT(sc->sc_is_open[endpt]); 827 ugen_do_close(sc, flag, endpt); 828 KASSERT(!sc->sc_is_open[endpt]); 829 830 ugenif_release(sc); 831 832 return 0; 833 } 834 835 Static int 836 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 837 { 838 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 839 uint32_t n, tn; 840 struct usbd_xfer *xfer; 841 usbd_status err; 842 int error = 0; 843 844 UGENHIST_FUNC(); UGENHIST_CALLED(); 845 846 DPRINTFN(5, "ugen%d: %jd", device_unit(sc->sc_dev), endpt, 0, 0); 847 848 if (endpt == USB_CONTROL_ENDPOINT) 849 return ENODEV; 850 851 KASSERT(sce->edesc); 852 KASSERT(sce->pipeh); 853 854 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 855 case UE_INTERRUPT: 856 /* Block until activity occurred. */ 857 mutex_enter(&sc->sc_lock); 858 while (sce->q.c_cc == 0) { 859 if (flag & IO_NDELAY) { 860 mutex_exit(&sc->sc_lock); 861 return EWOULDBLOCK; 862 } 863 DPRINTFN(5, "sleep on %jx", (uintptr_t)sce, 0, 0, 0); 864 /* "ugenri" */ 865 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 866 mstohz(sce->timeout)); 867 DPRINTFN(5, "woke, error=%jd", 868 error, 0, 0, 0); 869 if (sc->sc_dying) 870 error = EIO; 871 if (error) 872 break; 873 } 874 mutex_exit(&sc->sc_lock); 875 876 /* Transfer as many chunks as possible. */ 877 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 878 n = uimin(sce->q.c_cc, uio->uio_resid); 879 if (n > sizeof(sc->sc_buffer)) 880 n = sizeof(sc->sc_buffer); 881 882 /* Remove a small chunk from the input queue. */ 883 q_to_b(&sce->q, sc->sc_buffer, n); 884 DPRINTFN(5, "got %jd chars", n, 0, 0, 0); 885 886 /* Copy the data to the user process. */ 887 error = uiomove(sc->sc_buffer, n, uio); 888 if (error) 889 break; 890 } 891 break; 892 case UE_BULK: 893 if (sce->state & UGEN_BULK_RA) { 894 DPRINTFN(5, "BULK_RA req: %zd used: %d", 895 uio->uio_resid, sce->ra_wb_used, 0, 0); 896 xfer = sce->ra_wb_xfer; 897 898 mutex_enter(&sc->sc_lock); 899 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 900 mutex_exit(&sc->sc_lock); 901 return EWOULDBLOCK; 902 } 903 while (uio->uio_resid > 0 && !error) { 904 while (sce->ra_wb_used == 0) { 905 DPRINTFN(5, "sleep on %jx", 906 (uintptr_t)sce, 0, 0, 0); 907 /* "ugenrb" */ 908 error = cv_timedwait_sig(&sce->cv, 909 &sc->sc_lock, mstohz(sce->timeout)); 910 DPRINTFN(5, "woke, error=%jd", 911 error, 0, 0, 0); 912 if (sc->sc_dying) 913 error = EIO; 914 if (error) 915 break; 916 } 917 918 /* Copy data to the process. */ 919 while (uio->uio_resid > 0 920 && sce->ra_wb_used > 0) { 921 n = uimin(uio->uio_resid, 922 sce->ra_wb_used); 923 n = uimin(n, sce->limit - sce->cur); 924 error = uiomove(sce->cur, n, uio); 925 if (error) 926 break; 927 sce->cur += n; 928 sce->ra_wb_used -= n; 929 if (sce->cur == sce->limit) 930 sce->cur = sce->ibuf; 931 } 932 933 /* 934 * If the transfers stopped because the 935 * buffer was full, restart them. 936 */ 937 if (sce->state & UGEN_RA_WB_STOP && 938 sce->ra_wb_used < sce->limit - sce->ibuf) { 939 n = (sce->limit - sce->ibuf) 940 - sce->ra_wb_used; 941 usbd_setup_xfer(xfer, sce, NULL, 942 uimin(n, sce->ra_wb_xferlen), 943 0, USBD_NO_TIMEOUT, 944 ugen_bulkra_intr); 945 sce->state &= ~UGEN_RA_WB_STOP; 946 err = usbd_transfer(xfer); 947 if (err != USBD_IN_PROGRESS) 948 /* 949 * The transfer has not been 950 * queued. Setting STOP 951 * will make us try 952 * again at the next read. 953 */ 954 sce->state |= UGEN_RA_WB_STOP; 955 } 956 } 957 mutex_exit(&sc->sc_lock); 958 break; 959 } 960 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 961 0, 0, &xfer); 962 if (error) 963 return error; 964 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 965 DPRINTFN(1, "start transfer %jd bytes", n, 0, 0, 0); 966 tn = n; 967 err = usbd_bulk_transfer(xfer, sce->pipeh, 968 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 969 sce->timeout, sc->sc_buffer, &tn); 970 if (err) { 971 if (err == USBD_INTERRUPTED) 972 error = EINTR; 973 else if (err == USBD_TIMEOUT) 974 error = ETIMEDOUT; 975 else 976 error = EIO; 977 break; 978 } 979 DPRINTFN(1, "got %jd bytes", tn, 0, 0, 0); 980 error = uiomove(sc->sc_buffer, tn, uio); 981 if (error || tn < n) 982 break; 983 } 984 usbd_destroy_xfer(xfer); 985 break; 986 case UE_ISOCHRONOUS: 987 mutex_enter(&sc->sc_lock); 988 while (sce->cur == sce->fill) { 989 if (flag & IO_NDELAY) { 990 mutex_exit(&sc->sc_lock); 991 return EWOULDBLOCK; 992 } 993 /* "ugenri" */ 994 DPRINTFN(5, "sleep on %jx", (uintptr_t)sce, 0, 0, 0); 995 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 996 mstohz(sce->timeout)); 997 DPRINTFN(5, "woke, error=%jd", error, 0, 0, 0); 998 if (sc->sc_dying) 999 error = EIO; 1000 if (error) 1001 break; 1002 } 1003 1004 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 1005 if(sce->fill > sce->cur) 1006 n = uimin(sce->fill - sce->cur, uio->uio_resid); 1007 else 1008 n = uimin(sce->limit - sce->cur, uio->uio_resid); 1009 1010 DPRINTFN(5, "isoc got %jd chars", n, 0, 0, 0); 1011 1012 /* Copy the data to the user process. */ 1013 error = uiomove(sce->cur, n, uio); 1014 if (error) 1015 break; 1016 sce->cur += n; 1017 if (sce->cur >= sce->limit) 1018 sce->cur = sce->ibuf; 1019 } 1020 mutex_exit(&sc->sc_lock); 1021 break; 1022 1023 1024 default: 1025 return ENXIO; 1026 } 1027 return error; 1028 } 1029 1030 static int 1031 ugenread(dev_t dev, struct uio *uio, int flag) 1032 { 1033 int endpt = UGENENDPOINT(dev); 1034 struct ugen_softc *sc; 1035 int error; 1036 1037 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1038 return ENXIO; 1039 error = ugen_do_read(sc, endpt, uio, flag); 1040 ugenif_release(sc); 1041 1042 return error; 1043 } 1044 1045 Static int 1046 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 1047 int flag) 1048 { 1049 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 1050 uint32_t n; 1051 int error = 0; 1052 uint32_t tn; 1053 char *dbuf; 1054 struct usbd_xfer *xfer; 1055 usbd_status err; 1056 1057 UGENHIST_FUNC(); UGENHIST_CALLED(); 1058 1059 DPRINTFN(5, "ugen%jd: %jd", device_unit(sc->sc_dev), endpt, 0, 0); 1060 1061 if (endpt == USB_CONTROL_ENDPOINT) 1062 return ENODEV; 1063 1064 KASSERT(sce->edesc); 1065 KASSERT(sce->pipeh); 1066 1067 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 1068 case UE_BULK: 1069 if (sce->state & UGEN_BULK_WB) { 1070 DPRINTFN(5, "BULK_WB req: %jd used: %jd", 1071 uio->uio_resid, sce->ra_wb_used, 0, 0); 1072 xfer = sce->ra_wb_xfer; 1073 1074 mutex_enter(&sc->sc_lock); 1075 if (sce->ra_wb_used == sce->limit - sce->ibuf && 1076 flag & IO_NDELAY) { 1077 mutex_exit(&sc->sc_lock); 1078 return EWOULDBLOCK; 1079 } 1080 while (uio->uio_resid > 0 && !error) { 1081 while (sce->ra_wb_used == 1082 sce->limit - sce->ibuf) { 1083 DPRINTFN(5, "sleep on %#jx", 1084 (uintptr_t)sce, 0, 0, 0); 1085 /* "ugenwb" */ 1086 error = cv_timedwait_sig(&sce->cv, 1087 &sc->sc_lock, mstohz(sce->timeout)); 1088 DPRINTFN(5, "woke, error=%d", 1089 error, 0, 0, 0); 1090 if (sc->sc_dying) 1091 error = EIO; 1092 if (error) 1093 break; 1094 } 1095 1096 /* Copy data from the process. */ 1097 while (uio->uio_resid > 0 && 1098 sce->ra_wb_used < sce->limit - sce->ibuf) { 1099 n = uimin(uio->uio_resid, 1100 (sce->limit - sce->ibuf) 1101 - sce->ra_wb_used); 1102 n = uimin(n, sce->limit - sce->fill); 1103 error = uiomove(sce->fill, n, uio); 1104 if (error) 1105 break; 1106 sce->fill += n; 1107 sce->ra_wb_used += n; 1108 if (sce->fill == sce->limit) 1109 sce->fill = sce->ibuf; 1110 } 1111 1112 /* 1113 * If the transfers stopped because the 1114 * buffer was empty, restart them. 1115 */ 1116 if (sce->state & UGEN_RA_WB_STOP && 1117 sce->ra_wb_used > 0) { 1118 dbuf = (char *)usbd_get_buffer(xfer); 1119 n = uimin(sce->ra_wb_used, 1120 sce->ra_wb_xferlen); 1121 tn = uimin(n, sce->limit - sce->cur); 1122 memcpy(dbuf, sce->cur, tn); 1123 dbuf += tn; 1124 if (n - tn > 0) 1125 memcpy(dbuf, sce->ibuf, 1126 n - tn); 1127 usbd_setup_xfer(xfer, sce, NULL, n, 1128 0, USBD_NO_TIMEOUT, 1129 ugen_bulkwb_intr); 1130 sce->state &= ~UGEN_RA_WB_STOP; 1131 err = usbd_transfer(xfer); 1132 if (err != USBD_IN_PROGRESS) 1133 /* 1134 * The transfer has not been 1135 * queued. Setting STOP 1136 * will make us try again 1137 * at the next read. 1138 */ 1139 sce->state |= UGEN_RA_WB_STOP; 1140 } 1141 } 1142 mutex_exit(&sc->sc_lock); 1143 break; 1144 } 1145 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 1146 0, 0, &xfer); 1147 if (error) 1148 return error; 1149 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 1150 error = uiomove(sc->sc_buffer, n, uio); 1151 if (error) 1152 break; 1153 DPRINTFN(1, "transfer %jd bytes", n, 0, 0, 0); 1154 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 1155 sc->sc_buffer, &n); 1156 if (err) { 1157 if (err == USBD_INTERRUPTED) 1158 error = EINTR; 1159 else if (err == USBD_TIMEOUT) 1160 error = ETIMEDOUT; 1161 else 1162 error = EIO; 1163 break; 1164 } 1165 } 1166 usbd_destroy_xfer(xfer); 1167 break; 1168 case UE_INTERRUPT: 1169 error = usbd_create_xfer(sce->pipeh, 1170 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 1171 if (error) 1172 return error; 1173 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 1174 uio->uio_resid)) != 0) { 1175 error = uiomove(sc->sc_buffer, n, uio); 1176 if (error) 1177 break; 1178 DPRINTFN(1, "transfer %jd bytes", n, 0, 0, 0); 1179 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 1180 sce->timeout, sc->sc_buffer, &n); 1181 if (err) { 1182 if (err == USBD_INTERRUPTED) 1183 error = EINTR; 1184 else if (err == USBD_TIMEOUT) 1185 error = ETIMEDOUT; 1186 else 1187 error = EIO; 1188 break; 1189 } 1190 } 1191 usbd_destroy_xfer(xfer); 1192 break; 1193 default: 1194 return ENXIO; 1195 } 1196 return error; 1197 } 1198 1199 static int 1200 ugenwrite(dev_t dev, struct uio *uio, int flag) 1201 { 1202 int endpt = UGENENDPOINT(dev); 1203 struct ugen_softc *sc; 1204 int error; 1205 1206 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1207 return ENXIO; 1208 error = ugen_do_write(sc, endpt, uio, flag); 1209 ugenif_release(sc); 1210 1211 return error; 1212 } 1213 1214 static int 1215 ugen_activate(device_t self, enum devact act) 1216 { 1217 struct ugen_softc *sc = device_private(self); 1218 1219 switch (act) { 1220 case DVACT_DEACTIVATE: 1221 sc->sc_dying = 1; 1222 return 0; 1223 default: 1224 return EOPNOTSUPP; 1225 } 1226 } 1227 1228 static int 1229 ugen_detach(device_t self, int flags) 1230 { 1231 struct ugen_softc *sc = device_private(self); 1232 struct ugen_endpoint *sce; 1233 int i, dir; 1234 int maj, mn; 1235 1236 UGENHIST_FUNC(); UGENHIST_CALLED(); 1237 1238 DPRINTF("sc=%ju flags=%ju", (uintptr_t)sc, flags, 0, 0); 1239 1240 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 1241 1242 /* 1243 * Fail if we're not forced to detach and userland has any 1244 * endpoints open. 1245 */ 1246 if ((flags & DETACH_FORCE) == 0) { 1247 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1248 if (sc->sc_is_open[i]) 1249 return EBUSY; 1250 } 1251 } 1252 1253 /* Prevent new users. Prevent suspend/resume. */ 1254 sc->sc_dying = 1; 1255 pmf_device_deregister(self); 1256 1257 /* 1258 * If we never finished attaching, skip nixing endpoints and 1259 * users because there aren't any. 1260 */ 1261 if (!sc->sc_attached) 1262 goto out; 1263 1264 /* Abort all pipes. */ 1265 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1266 for (dir = OUT; dir <= IN; dir++) { 1267 sce = &sc->sc_endpoints[i][dir]; 1268 if (sce->pipeh) 1269 usbd_abort_pipe(sce->pipeh); 1270 } 1271 } 1272 1273 /* 1274 * Wait for users to drain. Before this point there can be no 1275 * more I/O operations started because we set sc_dying; after 1276 * this, there can be no more I/O operations in progress, so it 1277 * will be safe to free things. 1278 */ 1279 mutex_enter(&sc->sc_lock); 1280 if (--sc->sc_refcnt >= 0) { 1281 /* Wake everyone */ 1282 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1283 for (dir = OUT; dir <= IN; dir++) 1284 cv_broadcast(&sc->sc_endpoints[i][dir].cv); 1285 } 1286 /* Wait for processes to go away. */ 1287 do { 1288 cv_wait(&sc->sc_detach_cv, &sc->sc_lock); 1289 } while (sc->sc_refcnt >= 0); 1290 } 1291 mutex_exit(&sc->sc_lock); 1292 1293 /* locate the major number */ 1294 maj = cdevsw_lookup_major(&ugen_cdevsw); 1295 1296 /* 1297 * Nuke the vnodes for any open instances (calls ugenclose, but 1298 * with no effect because we already set sc_dying). 1299 */ 1300 mn = sc->sc_unit * USB_MAX_ENDPOINTS; 1301 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1302 1303 /* Actually close any lingering pipes. */ 1304 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1305 ugen_do_close(sc, FREAD|FWRITE, i); 1306 1307 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1308 ugenif_put_unit(sc); 1309 1310 out: for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1311 for (dir = OUT; dir <= IN; dir++) { 1312 sce = &sc->sc_endpoints[i][dir]; 1313 seldestroy(&sce->rsel); 1314 cv_destroy(&sce->cv); 1315 } 1316 } 1317 1318 cv_destroy(&sc->sc_detach_cv); 1319 mutex_destroy(&sc->sc_lock); 1320 1321 return 0; 1322 } 1323 1324 Static void 1325 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1326 { 1327 struct ugen_endpoint *sce = addr; 1328 struct ugen_softc *sc = sce->sc; 1329 uint32_t count; 1330 u_char *ibuf; 1331 1332 UGENHIST_FUNC(); UGENHIST_CALLED(); 1333 1334 if (status == USBD_CANCELLED) 1335 return; 1336 1337 if (status != USBD_NORMAL_COMPLETION) { 1338 DPRINTF("status=%jd", status, 0, 0, 0); 1339 if (status == USBD_STALLED) 1340 usbd_clear_endpoint_stall_async(sce->pipeh); 1341 return; 1342 } 1343 1344 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1345 ibuf = sce->ibuf; 1346 1347 DPRINTFN(5, "xfer=%#jx status=%d count=%d", 1348 (uintptr_t)xfer, status, count, 0); 1349 DPRINTFN(5, " data = %02x %02x %02x", 1350 ibuf[0], ibuf[1], ibuf[2], 0); 1351 1352 mutex_enter(&sc->sc_lock); 1353 (void)b_to_q(ibuf, count, &sce->q); 1354 cv_signal(&sce->cv); 1355 mutex_exit(&sc->sc_lock); 1356 selnotify(&sce->rsel, 0, 0); 1357 } 1358 1359 Static void 1360 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1361 usbd_status status) 1362 { 1363 struct isoreq *req = addr; 1364 struct ugen_endpoint *sce = req->sce; 1365 struct ugen_softc *sc = sce->sc; 1366 uint32_t count, n; 1367 int i, isize; 1368 1369 UGENHIST_FUNC(); UGENHIST_CALLED(); 1370 1371 /* Return if we are aborting. */ 1372 if (status == USBD_CANCELLED) 1373 return; 1374 1375 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1376 DPRINTFN(5, "xfer %ld, count=%d", 1377 (long)(req - sce->isoreqs), count, 0, 0); 1378 1379 mutex_enter(&sc->sc_lock); 1380 1381 /* throw away oldest input if the buffer is full */ 1382 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1383 sce->cur += count; 1384 if (sce->cur >= sce->limit) 1385 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1386 DPRINTFN(5, "throwing away %jd bytes", 1387 count, 0, 0, 0); 1388 } 1389 1390 isize = UGETW(sce->edesc->wMaxPacketSize); 1391 for (i = 0; i < UGEN_NISORFRMS; i++) { 1392 uint32_t actlen = req->sizes[i]; 1393 char const *tbuf = (char const *)req->dmabuf + isize * i; 1394 1395 /* copy data to buffer */ 1396 while (actlen > 0) { 1397 n = uimin(actlen, sce->limit - sce->fill); 1398 memcpy(sce->fill, tbuf, n); 1399 1400 tbuf += n; 1401 actlen -= n; 1402 sce->fill += n; 1403 if (sce->fill == sce->limit) 1404 sce->fill = sce->ibuf; 1405 } 1406 1407 /* setup size for next transfer */ 1408 req->sizes[i] = isize; 1409 } 1410 1411 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1412 ugen_isoc_rintr); 1413 (void)usbd_transfer(xfer); 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_bulkra_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 const *tbuf; 1428 usbd_status err; 1429 1430 UGENHIST_FUNC(); UGENHIST_CALLED(); 1431 1432 /* Return if we are aborting. */ 1433 if (status == USBD_CANCELLED) 1434 return; 1435 1436 if (status != USBD_NORMAL_COMPLETION) { 1437 DPRINTF("status=%jd", status, 0, 0, 0); 1438 sce->state |= UGEN_RA_WB_STOP; 1439 if (status == USBD_STALLED) 1440 usbd_clear_endpoint_stall_async(sce->pipeh); 1441 return; 1442 } 1443 1444 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1445 1446 mutex_enter(&sc->sc_lock); 1447 1448 /* Keep track of how much is in the buffer. */ 1449 sce->ra_wb_used += count; 1450 1451 /* Copy data to buffer. */ 1452 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1453 n = uimin(count, sce->limit - sce->fill); 1454 memcpy(sce->fill, tbuf, n); 1455 tbuf += n; 1456 count -= n; 1457 sce->fill += n; 1458 if (sce->fill == sce->limit) 1459 sce->fill = sce->ibuf; 1460 if (count > 0) { 1461 memcpy(sce->fill, tbuf, count); 1462 sce->fill += count; 1463 } 1464 1465 /* Set up the next request if necessary. */ 1466 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1467 if (n > 0) { 1468 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1469 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1470 err = usbd_transfer(xfer); 1471 if (err != USBD_IN_PROGRESS) { 1472 printf("error=%d", err); 1473 /* 1474 * The transfer has not been queued. Setting STOP 1475 * will make us try again at the next read. 1476 */ 1477 sce->state |= UGEN_RA_WB_STOP; 1478 } 1479 } 1480 else 1481 sce->state |= UGEN_RA_WB_STOP; 1482 1483 cv_signal(&sce->cv); 1484 mutex_exit(&sc->sc_lock); 1485 selnotify(&sce->rsel, 0, 0); 1486 } 1487 1488 Static void 1489 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1490 usbd_status status) 1491 { 1492 struct ugen_endpoint *sce = addr; 1493 struct ugen_softc *sc = sce->sc; 1494 uint32_t count, n; 1495 char *tbuf; 1496 usbd_status err; 1497 1498 UGENHIST_FUNC(); UGENHIST_CALLED(); 1499 1500 /* Return if we are aborting. */ 1501 if (status == USBD_CANCELLED) 1502 return; 1503 1504 if (status != USBD_NORMAL_COMPLETION) { 1505 DPRINTF("status=%jd", status, 0, 0, 0); 1506 sce->state |= UGEN_RA_WB_STOP; 1507 if (status == USBD_STALLED) 1508 usbd_clear_endpoint_stall_async(sce->pipeh); 1509 return; 1510 } 1511 1512 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1513 1514 mutex_enter(&sc->sc_lock); 1515 1516 /* Keep track of how much is in the buffer. */ 1517 sce->ra_wb_used -= count; 1518 1519 /* Update buffer pointers. */ 1520 sce->cur += count; 1521 if (sce->cur >= sce->limit) 1522 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1523 1524 /* Set up next request if necessary. */ 1525 if (sce->ra_wb_used > 0) { 1526 /* copy data from buffer */ 1527 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1528 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1529 n = uimin(count, sce->limit - sce->cur); 1530 memcpy(tbuf, sce->cur, n); 1531 tbuf += n; 1532 if (count - n > 0) 1533 memcpy(tbuf, sce->ibuf, count - n); 1534 1535 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1536 ugen_bulkwb_intr); 1537 err = usbd_transfer(xfer); 1538 if (err != USBD_IN_PROGRESS) { 1539 printf("error=%d", err); 1540 /* 1541 * The transfer has not been queued. Setting STOP 1542 * will make us try again at the next write. 1543 */ 1544 sce->state |= UGEN_RA_WB_STOP; 1545 } 1546 } 1547 else 1548 sce->state |= UGEN_RA_WB_STOP; 1549 1550 cv_signal(&sce->cv); 1551 mutex_exit(&sc->sc_lock); 1552 selnotify(&sce->rsel, 0, 0); 1553 } 1554 1555 Static usbd_status 1556 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1557 { 1558 struct usbd_interface *iface; 1559 usb_endpoint_descriptor_t *ed; 1560 usbd_status err; 1561 struct ugen_endpoint *sce; 1562 uint8_t niface, nendpt, endptno, endpt; 1563 int dir; 1564 1565 UGENHIST_FUNC(); UGENHIST_CALLED(); 1566 1567 DPRINTFN(15, "%d %d", ifaceidx, altno, 0, 0); 1568 1569 err = usbd_interface_count(sc->sc_udev, &niface); 1570 if (err) 1571 return err; 1572 if (ifaceidx < 0 || ifaceidx >= niface) 1573 return USBD_INVAL; 1574 1575 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1576 if (err) 1577 return err; 1578 err = usbd_endpoint_count(iface, &nendpt); 1579 if (err) 1580 return err; 1581 1582 /* change setting */ 1583 err = usbd_set_interface(iface, altno); 1584 if (err) 1585 return err; 1586 1587 err = usbd_endpoint_count(iface, &nendpt); 1588 if (err) 1589 return err; 1590 1591 ugen_clear_endpoints(sc); 1592 1593 for (endptno = 0; endptno < nendpt; endptno++) { 1594 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1595 KASSERT(ed != NULL); 1596 endpt = ed->bEndpointAddress; 1597 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1598 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1599 sce->sc = sc; 1600 sce->edesc = ed; 1601 sce->iface = iface; 1602 } 1603 return 0; 1604 } 1605 1606 /* Retrieve a complete descriptor for a certain device and index. */ 1607 Static usb_config_descriptor_t * 1608 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1609 { 1610 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1611 int len; 1612 usbd_status err; 1613 1614 UGENHIST_FUNC(); UGENHIST_CALLED(); 1615 1616 if (index == USB_CURRENT_CONFIG_INDEX) { 1617 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1618 if (tdesc == NULL) 1619 return NULL; 1620 len = UGETW(tdesc->wTotalLength); 1621 if (lenp) 1622 *lenp = len; 1623 cdesc = kmem_alloc(len, KM_SLEEP); 1624 memcpy(cdesc, tdesc, len); 1625 DPRINTFN(5, "current, len=%jd", len, 0, 0, 0); 1626 } else { 1627 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1628 if (err) 1629 return 0; 1630 len = UGETW(cdescr.wTotalLength); 1631 DPRINTFN(5, "index=%jd, len=%jd", index, len, 0, 0); 1632 if (lenp) 1633 *lenp = len; 1634 cdesc = kmem_alloc(len, KM_SLEEP); 1635 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1636 if (err) { 1637 kmem_free(cdesc, len); 1638 return 0; 1639 } 1640 } 1641 return cdesc; 1642 } 1643 1644 Static int 1645 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1646 { 1647 struct usbd_interface *iface; 1648 usbd_status err; 1649 1650 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1651 if (err) 1652 return -1; 1653 return usbd_get_interface_altindex(iface); 1654 } 1655 1656 Static int 1657 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1658 void *addr, int flag, struct lwp *l) 1659 { 1660 struct ugen_endpoint *sce; 1661 usbd_status err; 1662 struct usbd_interface *iface; 1663 struct usb_config_desc *cd; 1664 usb_config_descriptor_t *cdesc; 1665 struct usb_interface_desc *id; 1666 usb_interface_descriptor_t *idesc; 1667 struct usb_endpoint_desc *ed; 1668 usb_endpoint_descriptor_t *edesc; 1669 struct usb_alt_interface *ai; 1670 struct usb_string_desc *si; 1671 uint8_t conf, alt; 1672 int cdesclen; 1673 int error; 1674 int dir; 1675 1676 UGENHIST_FUNC(); UGENHIST_CALLED(); 1677 1678 KASSERT(KERNEL_LOCKED_P()); /* ugen_set_config */ 1679 1680 DPRINTFN(5, "cmd=%08jx", cmd, 0, 0, 0); 1681 1682 switch (cmd) { 1683 case FIONBIO: 1684 /* All handled in the upper FS layer. */ 1685 return 0; 1686 case USB_SET_SHORT_XFER: 1687 if (endpt == USB_CONTROL_ENDPOINT) 1688 return EINVAL; 1689 /* This flag only affects read */ 1690 sce = &sc->sc_endpoints[endpt][IN]; 1691 if (sce == NULL || sce->pipeh == NULL) 1692 return EINVAL; 1693 if (*(int *)addr) 1694 sce->state |= UGEN_SHORT_OK; 1695 else 1696 sce->state &= ~UGEN_SHORT_OK; 1697 return 0; 1698 case USB_SET_TIMEOUT: 1699 for (dir = OUT; dir <= IN; dir++) { 1700 sce = &sc->sc_endpoints[endpt][dir]; 1701 if (sce == NULL) 1702 return EINVAL; 1703 1704 sce->timeout = *(int *)addr; 1705 } 1706 return 0; 1707 case USB_SET_BULK_RA: 1708 if (endpt == USB_CONTROL_ENDPOINT) 1709 return EINVAL; 1710 sce = &sc->sc_endpoints[endpt][IN]; 1711 if (sce == NULL || sce->pipeh == NULL) 1712 return EINVAL; 1713 edesc = sce->edesc; 1714 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1715 return EINVAL; 1716 1717 if (*(int *)addr) { 1718 /* Only turn RA on if it's currently off. */ 1719 if (sce->state & UGEN_BULK_RA) 1720 return 0; 1721 KASSERT(sce->ra_wb_xfer == NULL); 1722 KASSERT(sce->ibuf == NULL); 1723 1724 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1725 /* shouldn't happen */ 1726 return EINVAL; 1727 error = usbd_create_xfer(sce->pipeh, 1728 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1729 if (error) 1730 return error; 1731 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1732 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1733 sce->fill = sce->cur = sce->ibuf; 1734 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1735 sce->ra_wb_used = 0; 1736 sce->state |= UGEN_BULK_RA; 1737 sce->state &= ~UGEN_RA_WB_STOP; 1738 /* Now start reading. */ 1739 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1740 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1741 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1742 err = usbd_transfer(sce->ra_wb_xfer); 1743 if (err != USBD_IN_PROGRESS) { 1744 sce->state &= ~UGEN_BULK_RA; 1745 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1746 sce->ibuf = NULL; 1747 usbd_destroy_xfer(sce->ra_wb_xfer); 1748 sce->ra_wb_xfer = NULL; 1749 return EIO; 1750 } 1751 } else { 1752 /* Only turn RA off if it's currently on. */ 1753 if (!(sce->state & UGEN_BULK_RA)) 1754 return 0; 1755 1756 sce->state &= ~UGEN_BULK_RA; 1757 usbd_abort_pipe(sce->pipeh); 1758 usbd_destroy_xfer(sce->ra_wb_xfer); 1759 sce->ra_wb_xfer = NULL; 1760 /* 1761 * XXX Discard whatever's in the buffer, but we 1762 * should keep it around and drain the buffer 1763 * instead. 1764 */ 1765 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1766 sce->ibuf = NULL; 1767 } 1768 return 0; 1769 case USB_SET_BULK_WB: 1770 if (endpt == USB_CONTROL_ENDPOINT) 1771 return EINVAL; 1772 sce = &sc->sc_endpoints[endpt][OUT]; 1773 if (sce == NULL || sce->pipeh == NULL) 1774 return EINVAL; 1775 edesc = sce->edesc; 1776 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1777 return EINVAL; 1778 1779 if (*(int *)addr) { 1780 /* Only turn WB on if it's currently off. */ 1781 if (sce->state & UGEN_BULK_WB) 1782 return 0; 1783 KASSERT(sce->ra_wb_xfer == NULL); 1784 KASSERT(sce->ibuf == NULL); 1785 1786 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1787 /* shouldn't happen */ 1788 return EINVAL; 1789 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1790 0, 0, &sce->ra_wb_xfer); 1791 /* XXX check error??? */ 1792 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1793 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1794 sce->fill = sce->cur = sce->ibuf; 1795 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1796 sce->ra_wb_used = 0; 1797 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1798 } else { 1799 /* Only turn WB off if it's currently on. */ 1800 if (!(sce->state & UGEN_BULK_WB)) 1801 return 0; 1802 1803 sce->state &= ~UGEN_BULK_WB; 1804 /* 1805 * XXX Discard whatever's in the buffer, but we 1806 * should keep it around and keep writing to 1807 * drain the buffer instead. 1808 */ 1809 usbd_abort_pipe(sce->pipeh); 1810 usbd_destroy_xfer(sce->ra_wb_xfer); 1811 sce->ra_wb_xfer = NULL; 1812 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1813 sce->ibuf = NULL; 1814 } 1815 return 0; 1816 case USB_SET_BULK_RA_OPT: 1817 case USB_SET_BULK_WB_OPT: 1818 { 1819 struct usb_bulk_ra_wb_opt *opt; 1820 1821 if (endpt == USB_CONTROL_ENDPOINT) 1822 return EINVAL; 1823 opt = (struct usb_bulk_ra_wb_opt *)addr; 1824 if (cmd == USB_SET_BULK_RA_OPT) 1825 sce = &sc->sc_endpoints[endpt][IN]; 1826 else 1827 sce = &sc->sc_endpoints[endpt][OUT]; 1828 if (sce == NULL || sce->pipeh == NULL) 1829 return EINVAL; 1830 if (opt->ra_wb_buffer_size < 1 || 1831 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1832 opt->ra_wb_request_size < 1 || 1833 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1834 return EINVAL; 1835 /* 1836 * XXX These changes do not take effect until the 1837 * next time RA/WB mode is enabled but they ought to 1838 * take effect immediately. 1839 */ 1840 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1841 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1842 return 0; 1843 } 1844 default: 1845 break; 1846 } 1847 1848 if (endpt != USB_CONTROL_ENDPOINT) 1849 return EINVAL; 1850 1851 switch (cmd) { 1852 #ifdef UGEN_DEBUG 1853 case USB_SETDEBUG: 1854 ugendebug = *(int *)addr; 1855 break; 1856 #endif 1857 case USB_GET_CONFIG: 1858 err = usbd_get_config(sc->sc_udev, &conf); 1859 if (err) 1860 return EIO; 1861 *(int *)addr = conf; 1862 break; 1863 case USB_SET_CONFIG: 1864 if (!(flag & FWRITE)) 1865 return EPERM; 1866 err = ugen_set_config(sc, *(int *)addr, 1); 1867 switch (err) { 1868 case USBD_NORMAL_COMPLETION: 1869 break; 1870 case USBD_IN_USE: 1871 return EBUSY; 1872 default: 1873 return EIO; 1874 } 1875 break; 1876 case USB_GET_ALTINTERFACE: 1877 ai = (struct usb_alt_interface *)addr; 1878 err = usbd_device2interface_handle(sc->sc_udev, 1879 ai->uai_interface_index, &iface); 1880 if (err) 1881 return EINVAL; 1882 idesc = usbd_get_interface_descriptor(iface); 1883 if (idesc == NULL) 1884 return EIO; 1885 ai->uai_alt_no = idesc->bAlternateSetting; 1886 break; 1887 case USB_SET_ALTINTERFACE: 1888 if (!(flag & FWRITE)) 1889 return EPERM; 1890 ai = (struct usb_alt_interface *)addr; 1891 err = usbd_device2interface_handle(sc->sc_udev, 1892 ai->uai_interface_index, &iface); 1893 if (err) 1894 return EINVAL; 1895 err = ugen_set_interface(sc, ai->uai_interface_index, 1896 ai->uai_alt_no); 1897 if (err) 1898 return EINVAL; 1899 break; 1900 case USB_GET_NO_ALT: 1901 ai = (struct usb_alt_interface *)addr; 1902 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1903 if (cdesc == NULL) 1904 return EINVAL; 1905 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1906 if (idesc == NULL) { 1907 kmem_free(cdesc, cdesclen); 1908 return EINVAL; 1909 } 1910 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1911 idesc->bInterfaceNumber); 1912 kmem_free(cdesc, cdesclen); 1913 break; 1914 case USB_GET_DEVICE_DESC: 1915 *(usb_device_descriptor_t *)addr = 1916 *usbd_get_device_descriptor(sc->sc_udev); 1917 break; 1918 case USB_GET_CONFIG_DESC: 1919 cd = (struct usb_config_desc *)addr; 1920 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1921 if (cdesc == NULL) 1922 return EINVAL; 1923 cd->ucd_desc = *cdesc; 1924 kmem_free(cdesc, cdesclen); 1925 break; 1926 case USB_GET_INTERFACE_DESC: 1927 id = (struct usb_interface_desc *)addr; 1928 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1929 if (cdesc == NULL) 1930 return EINVAL; 1931 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1932 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1933 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1934 else 1935 alt = id->uid_alt_index; 1936 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1937 if (idesc == NULL) { 1938 kmem_free(cdesc, cdesclen); 1939 return EINVAL; 1940 } 1941 id->uid_desc = *idesc; 1942 kmem_free(cdesc, cdesclen); 1943 break; 1944 case USB_GET_ENDPOINT_DESC: 1945 ed = (struct usb_endpoint_desc *)addr; 1946 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1947 if (cdesc == NULL) 1948 return EINVAL; 1949 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1950 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1951 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1952 else 1953 alt = ed->ued_alt_index; 1954 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1955 alt, ed->ued_endpoint_index); 1956 if (edesc == NULL) { 1957 kmem_free(cdesc, cdesclen); 1958 return EINVAL; 1959 } 1960 ed->ued_desc = *edesc; 1961 kmem_free(cdesc, cdesclen); 1962 break; 1963 case USB_GET_FULL_DESC: 1964 { 1965 int len; 1966 struct iovec iov; 1967 struct uio uio; 1968 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1969 1970 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1971 if (cdesc == NULL) 1972 return EINVAL; 1973 len = cdesclen; 1974 if (len > fd->ufd_size) 1975 len = fd->ufd_size; 1976 iov.iov_base = (void *)fd->ufd_data; 1977 iov.iov_len = len; 1978 uio.uio_iov = &iov; 1979 uio.uio_iovcnt = 1; 1980 uio.uio_resid = len; 1981 uio.uio_offset = 0; 1982 uio.uio_rw = UIO_READ; 1983 uio.uio_vmspace = l->l_proc->p_vmspace; 1984 error = uiomove((void *)cdesc, len, &uio); 1985 kmem_free(cdesc, cdesclen); 1986 return error; 1987 } 1988 case USB_GET_STRING_DESC: { 1989 int len; 1990 si = (struct usb_string_desc *)addr; 1991 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1992 si->usd_language_id, &si->usd_desc, &len); 1993 if (err) 1994 return EINVAL; 1995 break; 1996 } 1997 case USB_DO_REQUEST: 1998 { 1999 struct usb_ctl_request *ur = (void *)addr; 2000 int len = UGETW(ur->ucr_request.wLength); 2001 struct iovec iov; 2002 struct uio uio; 2003 void *ptr = 0; 2004 usbd_status xerr; 2005 2006 error = 0; 2007 2008 if (!(flag & FWRITE)) 2009 return EPERM; 2010 /* Avoid requests that would damage the bus integrity. */ 2011 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 2012 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 2013 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 2014 ur->ucr_request.bRequest == UR_SET_CONFIG) || 2015 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 2016 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 2017 return EINVAL; 2018 2019 if (len < 0 || len > 32767) 2020 return EINVAL; 2021 if (len != 0) { 2022 iov.iov_base = (void *)ur->ucr_data; 2023 iov.iov_len = len; 2024 uio.uio_iov = &iov; 2025 uio.uio_iovcnt = 1; 2026 uio.uio_resid = len; 2027 uio.uio_offset = 0; 2028 uio.uio_rw = 2029 ur->ucr_request.bmRequestType & UT_READ ? 2030 UIO_READ : UIO_WRITE; 2031 uio.uio_vmspace = l->l_proc->p_vmspace; 2032 ptr = kmem_alloc(len, KM_SLEEP); 2033 if (uio.uio_rw == UIO_WRITE) { 2034 error = uiomove(ptr, len, &uio); 2035 if (error) 2036 goto ret; 2037 } 2038 } 2039 sce = &sc->sc_endpoints[endpt][IN]; 2040 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 2041 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 2042 if (xerr) { 2043 error = EIO; 2044 goto ret; 2045 } 2046 if (len != 0) { 2047 if (uio.uio_rw == UIO_READ) { 2048 size_t alen = uimin(len, ur->ucr_actlen); 2049 error = uiomove(ptr, alen, &uio); 2050 if (error) 2051 goto ret; 2052 } 2053 } 2054 ret: 2055 if (ptr) 2056 kmem_free(ptr, len); 2057 return error; 2058 } 2059 case USB_GET_DEVICEINFO: 2060 usbd_fill_deviceinfo(sc->sc_udev, 2061 (struct usb_device_info *)addr, 0); 2062 break; 2063 case USB_GET_DEVICEINFO_OLD: 2064 { 2065 int ret; 2066 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 2067 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 2068 usbd_devinfo_vp, usbd_printBCD), 2069 enosys(), ret); 2070 if (ret == 0) 2071 return 0; 2072 return EINVAL; 2073 } 2074 default: 2075 return EINVAL; 2076 } 2077 return 0; 2078 } 2079 2080 static int 2081 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 2082 { 2083 int endpt = UGENENDPOINT(dev); 2084 struct ugen_softc *sc; 2085 int error; 2086 2087 if ((sc = ugenif_acquire(UGENUNIT(dev))) == 0) 2088 return ENXIO; 2089 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 2090 ugenif_release(sc); 2091 2092 return error; 2093 } 2094 2095 static int 2096 ugenpoll(dev_t dev, int events, struct lwp *l) 2097 { 2098 struct ugen_softc *sc; 2099 struct ugen_endpoint *sce_in, *sce_out; 2100 int revents = 0; 2101 2102 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2103 return POLLHUP; 2104 2105 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2106 revents |= POLLERR; 2107 goto out; 2108 } 2109 2110 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2111 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2112 KASSERT(sce_in->edesc || sce_out->edesc); 2113 KASSERT(sce_in->pipeh || sce_out->pipeh); 2114 2115 mutex_enter(&sc->sc_lock); 2116 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 2117 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 2118 case UE_INTERRUPT: 2119 if (sce_in->q.c_cc > 0) 2120 revents |= events & (POLLIN | POLLRDNORM); 2121 else 2122 selrecord(l, &sce_in->rsel); 2123 break; 2124 case UE_ISOCHRONOUS: 2125 if (sce_in->cur != sce_in->fill) 2126 revents |= events & (POLLIN | POLLRDNORM); 2127 else 2128 selrecord(l, &sce_in->rsel); 2129 break; 2130 case UE_BULK: 2131 if (sce_in->state & UGEN_BULK_RA) { 2132 if (sce_in->ra_wb_used > 0) 2133 revents |= events & 2134 (POLLIN | POLLRDNORM); 2135 else 2136 selrecord(l, &sce_in->rsel); 2137 break; 2138 } 2139 /* 2140 * We have no easy way of determining if a read will 2141 * yield any data or a write will happen. 2142 * Pretend they will. 2143 */ 2144 revents |= events & (POLLIN | POLLRDNORM); 2145 break; 2146 default: 2147 break; 2148 } 2149 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 2150 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 2151 case UE_INTERRUPT: 2152 case UE_ISOCHRONOUS: 2153 /* XXX unimplemented */ 2154 break; 2155 case UE_BULK: 2156 if (sce_out->state & UGEN_BULK_WB) { 2157 if (sce_out->ra_wb_used < 2158 sce_out->limit - sce_out->ibuf) 2159 revents |= events & 2160 (POLLOUT | POLLWRNORM); 2161 else 2162 selrecord(l, &sce_out->rsel); 2163 break; 2164 } 2165 /* 2166 * We have no easy way of determining if a read will 2167 * yield any data or a write will happen. 2168 * Pretend they will. 2169 */ 2170 revents |= events & (POLLOUT | POLLWRNORM); 2171 break; 2172 default: 2173 break; 2174 } 2175 2176 mutex_exit(&sc->sc_lock); 2177 2178 out: ugenif_release(sc); 2179 return revents; 2180 } 2181 2182 static void 2183 filt_ugenrdetach(struct knote *kn) 2184 { 2185 struct ugen_endpoint *sce = kn->kn_hook; 2186 struct ugen_softc *sc = sce->sc; 2187 2188 mutex_enter(&sc->sc_lock); 2189 selremove_knote(&sce->rsel, kn); 2190 mutex_exit(&sc->sc_lock); 2191 } 2192 2193 static int 2194 filt_ugenread_intr(struct knote *kn, long hint) 2195 { 2196 struct ugen_endpoint *sce = kn->kn_hook; 2197 struct ugen_softc *sc = sce->sc; 2198 int ret; 2199 2200 mutex_enter(&sc->sc_lock); 2201 if (sc->sc_dying) { 2202 ret = 0; 2203 } else { 2204 kn->kn_data = sce->q.c_cc; 2205 ret = kn->kn_data > 0; 2206 } 2207 mutex_exit(&sc->sc_lock); 2208 2209 return ret; 2210 } 2211 2212 static int 2213 filt_ugenread_isoc(struct knote *kn, long hint) 2214 { 2215 struct ugen_endpoint *sce = kn->kn_hook; 2216 struct ugen_softc *sc = sce->sc; 2217 int ret; 2218 2219 mutex_enter(&sc->sc_lock); 2220 if (sc->sc_dying) { 2221 ret = 0; 2222 } else if (sce->cur == sce->fill) { 2223 ret = 0; 2224 } else if (sce->cur < sce->fill) { 2225 kn->kn_data = sce->fill - sce->cur; 2226 ret = 1; 2227 } else { 2228 kn->kn_data = (sce->limit - sce->cur) + 2229 (sce->fill - sce->ibuf); 2230 ret = 1; 2231 } 2232 mutex_exit(&sc->sc_lock); 2233 2234 return ret; 2235 } 2236 2237 static int 2238 filt_ugenread_bulk(struct knote *kn, long hint) 2239 { 2240 struct ugen_endpoint *sce = kn->kn_hook; 2241 struct ugen_softc *sc = sce->sc; 2242 int ret; 2243 2244 mutex_enter(&sc->sc_lock); 2245 if (sc->sc_dying) { 2246 ret = 0; 2247 } else if (!(sce->state & UGEN_BULK_RA)) { 2248 /* 2249 * We have no easy way of determining if a read will 2250 * yield any data or a write will happen. 2251 * So, emulate "seltrue". 2252 */ 2253 ret = filt_seltrue(kn, hint); 2254 } else if (sce->ra_wb_used == 0) { 2255 ret = 0; 2256 } else { 2257 kn->kn_data = sce->ra_wb_used; 2258 ret = 1; 2259 } 2260 mutex_exit(&sc->sc_lock); 2261 2262 return ret; 2263 } 2264 2265 static int 2266 filt_ugenwrite_bulk(struct knote *kn, long hint) 2267 { 2268 struct ugen_endpoint *sce = kn->kn_hook; 2269 struct ugen_softc *sc = sce->sc; 2270 int ret; 2271 2272 mutex_enter(&sc->sc_lock); 2273 if (sc->sc_dying) { 2274 ret = 0; 2275 } else if (!(sce->state & UGEN_BULK_WB)) { 2276 /* 2277 * We have no easy way of determining if a read will 2278 * yield any data or a write will happen. 2279 * So, emulate "seltrue". 2280 */ 2281 ret = filt_seltrue(kn, hint); 2282 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2283 ret = 0; 2284 } else { 2285 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2286 ret = 1; 2287 } 2288 mutex_exit(&sc->sc_lock); 2289 2290 return ret; 2291 } 2292 2293 static const struct filterops ugenread_intr_filtops = { 2294 .f_flags = FILTEROP_ISFD, 2295 .f_attach = NULL, 2296 .f_detach = filt_ugenrdetach, 2297 .f_event = filt_ugenread_intr, 2298 }; 2299 2300 static const struct filterops ugenread_isoc_filtops = { 2301 .f_flags = FILTEROP_ISFD, 2302 .f_attach = NULL, 2303 .f_detach = filt_ugenrdetach, 2304 .f_event = filt_ugenread_isoc, 2305 }; 2306 2307 static const struct filterops ugenread_bulk_filtops = { 2308 .f_flags = FILTEROP_ISFD, 2309 .f_attach = NULL, 2310 .f_detach = filt_ugenrdetach, 2311 .f_event = filt_ugenread_bulk, 2312 }; 2313 2314 static const struct filterops ugenwrite_bulk_filtops = { 2315 .f_flags = FILTEROP_ISFD, 2316 .f_attach = NULL, 2317 .f_detach = filt_ugenrdetach, 2318 .f_event = filt_ugenwrite_bulk, 2319 }; 2320 2321 static int 2322 ugenkqfilter(dev_t dev, struct knote *kn) 2323 { 2324 struct ugen_softc *sc; 2325 struct ugen_endpoint *sce; 2326 struct selinfo *sip; 2327 int error; 2328 2329 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2330 return ENXIO; 2331 2332 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2333 error = ENODEV; 2334 goto out; 2335 } 2336 2337 switch (kn->kn_filter) { 2338 case EVFILT_READ: 2339 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2340 if (sce == NULL) { 2341 error = EINVAL; 2342 goto out; 2343 } 2344 2345 sip = &sce->rsel; 2346 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2347 case UE_INTERRUPT: 2348 kn->kn_fop = &ugenread_intr_filtops; 2349 break; 2350 case UE_ISOCHRONOUS: 2351 kn->kn_fop = &ugenread_isoc_filtops; 2352 break; 2353 case UE_BULK: 2354 kn->kn_fop = &ugenread_bulk_filtops; 2355 break; 2356 default: 2357 error = EINVAL; 2358 goto out; 2359 } 2360 break; 2361 2362 case EVFILT_WRITE: 2363 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2364 if (sce == NULL) { 2365 error = EINVAL; 2366 goto out; 2367 } 2368 2369 sip = &sce->rsel; 2370 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2371 case UE_INTERRUPT: 2372 case UE_ISOCHRONOUS: 2373 /* XXX poll doesn't support this */ 2374 error = EINVAL; 2375 goto out; 2376 2377 case UE_BULK: 2378 kn->kn_fop = &ugenwrite_bulk_filtops; 2379 break; 2380 default: 2381 error = EINVAL; 2382 goto out; 2383 } 2384 break; 2385 2386 default: 2387 error = EINVAL; 2388 goto out; 2389 } 2390 2391 kn->kn_hook = sce; 2392 2393 mutex_enter(&sc->sc_lock); 2394 selrecord_knote(sip, kn); 2395 mutex_exit(&sc->sc_lock); 2396 2397 error = 0; 2398 2399 out: ugenif_release(sc); 2400 return error; 2401 } 2402 2403 MODULE(MODULE_CLASS_DRIVER, ugen, NULL); 2404 2405 static int 2406 ugen_modcmd(modcmd_t cmd, void *aux) 2407 { 2408 2409 switch (cmd) { 2410 case MODULE_CMD_INIT: 2411 mutex_init(&ugenif.lock, MUTEX_DEFAULT, IPL_NONE); 2412 rb_tree_init(&ugenif.tree, &ugenif_tree_ops); 2413 return 0; 2414 default: 2415 return ENOTTY; 2416 } 2417 } 2418
Indexes created Sun Oct 19 02:09:48 GMT 2025