ugen.c revision 1.160
1 /* $NetBSD: ugen.c,v 1.160 2021/09/07 10:42:34 riastradh Exp $ */ 2 3 /* 4 * Copyright (c) 1998, 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Lennart Augustsson (lennart (at) augustsson.net) at 9 * Carlstedt Research & Technology. 10 * 11 * Copyright (c) 2006 BBN Technologies Corp. All rights reserved. 12 * Effort sponsored in part by the Defense Advanced Research Projects 13 * Agency (DARPA) and the Department of the Interior National Business 14 * Center under agreement number NBCHC050166. 15 * 16 * Redistribution and use in source and binary forms, with or without 17 * modification, are permitted provided that the following conditions 18 * are met: 19 * 1. Redistributions of source code must retain the above copyright 20 * notice, this list of conditions and the following disclaimer. 21 * 2. Redistributions in binary form must reproduce the above copyright 22 * notice, this list of conditions and the following disclaimer in the 23 * documentation and/or other materials provided with the distribution. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ugen.c,v 1.160 2021/09/07 10:42:34 riastradh Exp $"); 41 42 #ifdef _KERNEL_OPT 43 #include "opt_compat_netbsd.h" 44 #include "opt_usb.h" 45 #endif 46 47 #include <sys/param.h> 48 #include <sys/systm.h> 49 #include <sys/kernel.h> 50 #include <sys/kmem.h> 51 #include <sys/device.h> 52 #include <sys/ioctl.h> 53 #include <sys/conf.h> 54 #include <sys/tty.h> 55 #include <sys/file.h> 56 #include <sys/select.h> 57 #include <sys/proc.h> 58 #include <sys/vnode.h> 59 #include <sys/poll.h> 60 #include <sys/compat_stub.h> 61 #include <sys/module.h> 62 #include <sys/rbtree.h> 63 64 #include <dev/usb/usb.h> 65 #include <dev/usb/usbdi.h> 66 #include <dev/usb/usbdi_util.h> 67 68 #include "ioconf.h" 69 70 #ifdef UGEN_DEBUG 71 #define DPRINTF(x) if (ugendebug) printf x 72 #define DPRINTFN(n,x) if (ugendebug>(n)) printf x 73 int ugendebug = 0; 74 #else 75 #define DPRINTF(x) 76 #define DPRINTFN(n,x) 77 #endif 78 79 #define UGEN_CHUNK 128 /* chunk size for read */ 80 #define UGEN_IBSIZE 1020 /* buffer size */ 81 #define UGEN_BBSIZE 1024 82 83 #define UGEN_NISOREQS 4 /* number of outstanding xfer requests */ 84 #define UGEN_NISORFRMS 8 /* number of transactions per req */ 85 #define UGEN_NISOFRAMES (UGEN_NISORFRMS * UGEN_NISOREQS) 86 87 #define UGEN_BULK_RA_WB_BUFSIZE 16384 /* default buffer size */ 88 #define UGEN_BULK_RA_WB_BUFMAX (1 << 20) /* maximum allowed buffer */ 89 90 struct isoreq { 91 struct ugen_endpoint *sce; 92 struct usbd_xfer *xfer; 93 void *dmabuf; 94 uint16_t sizes[UGEN_NISORFRMS]; 95 }; 96 97 struct ugen_endpoint { 98 struct ugen_softc *sc; 99 usb_endpoint_descriptor_t *edesc; 100 struct usbd_interface *iface; 101 int state; 102 #define UGEN_SHORT_OK 0x04 /* short xfers are OK */ 103 #define UGEN_BULK_RA 0x08 /* in bulk read-ahead mode */ 104 #define UGEN_BULK_WB 0x10 /* in bulk write-behind mode */ 105 #define UGEN_RA_WB_STOP 0x20 /* RA/WB xfer is stopped (buffer full/empty) */ 106 struct usbd_pipe *pipeh; 107 struct clist q; 108 u_char *ibuf; /* start of buffer (circular for isoc) */ 109 u_char *fill; /* location for input (isoc) */ 110 u_char *limit; /* end of circular buffer (isoc) */ 111 u_char *cur; /* current read location (isoc) */ 112 uint32_t timeout; 113 uint32_t ra_wb_bufsize; /* requested size for RA/WB buffer */ 114 uint32_t ra_wb_reqsize; /* requested xfer length for RA/WB */ 115 uint32_t ra_wb_used; /* how much is in buffer */ 116 uint32_t ra_wb_xferlen; /* current xfer length for RA/WB */ 117 struct usbd_xfer *ra_wb_xfer; 118 struct isoreq isoreqs[UGEN_NISOREQS]; 119 /* Keep these last; we don't overwrite them in ugen_set_config() */ 120 #define UGEN_ENDPOINT_NONZERO_CRUFT offsetof(struct ugen_endpoint, rsel) 121 struct selinfo rsel; 122 kcondvar_t cv; 123 }; 124 125 struct ugen_softc { 126 device_t sc_dev; /* base device */ 127 struct usbd_device *sc_udev; 128 struct rb_node sc_node; 129 unsigned sc_unit; 130 131 kmutex_t sc_lock; 132 kcondvar_t sc_detach_cv; 133 134 char sc_is_open[USB_MAX_ENDPOINTS]; 135 struct ugen_endpoint sc_endpoints[USB_MAX_ENDPOINTS][2]; 136 #define OUT 0 137 #define IN 1 138 139 int sc_refcnt; 140 char sc_buffer[UGEN_BBSIZE]; 141 u_char sc_dying; 142 u_char sc_attached; 143 }; 144 145 static struct { 146 kmutex_t lock; 147 rb_tree_t tree; 148 } ugenif __cacheline_aligned; 149 150 static int 151 compare_ugen(void *cookie, const void *vsca, const void *vscb) 152 { 153 const struct ugen_softc *sca = vsca; 154 const struct ugen_softc *scb = vscb; 155 156 if (sca->sc_unit < scb->sc_unit) 157 return -1; 158 if (sca->sc_unit > scb->sc_unit) 159 return +1; 160 return 0; 161 } 162 163 static int 164 compare_ugen_key(void *cookie, const void *vsc, const void *vk) 165 { 166 const struct ugen_softc *sc = vsc; 167 const unsigned *k = vk; 168 169 if (sc->sc_unit < *k) 170 return -1; 171 if (sc->sc_unit > *k) 172 return +1; 173 return 0; 174 } 175 176 static const rb_tree_ops_t ugenif_tree_ops = { 177 .rbto_compare_nodes = compare_ugen, 178 .rbto_compare_key = compare_ugen_key, 179 .rbto_node_offset = offsetof(struct ugen_softc, sc_node), 180 }; 181 182 static void 183 ugenif_get_unit(struct ugen_softc *sc) 184 { 185 struct ugen_softc *sc0; 186 unsigned i; 187 188 mutex_enter(&ugenif.lock); 189 for (i = 0, sc0 = RB_TREE_MIN(&ugenif.tree); 190 sc0 != NULL && i == sc0->sc_unit; 191 i++, sc0 = RB_TREE_NEXT(&ugenif.tree, sc0)) 192 KASSERT(i < UINT_MAX); 193 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == NULL); 194 sc->sc_unit = i; 195 sc0 = rb_tree_insert_node(&ugenif.tree, sc); 196 KASSERT(sc0 == sc); 197 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == sc); 198 mutex_exit(&ugenif.lock); 199 } 200 201 static void 202 ugenif_put_unit(struct ugen_softc *sc) 203 { 204 205 mutex_enter(&ugenif.lock); 206 KASSERT(rb_tree_find_node(&ugenif.tree, &sc->sc_unit) == sc); 207 rb_tree_remove_node(&ugenif.tree, sc); 208 sc->sc_unit = -1; 209 mutex_exit(&ugenif.lock); 210 } 211 212 static struct ugen_softc * 213 ugenif_acquire(unsigned unit) 214 { 215 struct ugen_softc *sc; 216 217 mutex_enter(&ugenif.lock); 218 sc = rb_tree_find_node(&ugenif.tree, &unit); 219 if (sc == NULL) 220 goto out; 221 mutex_enter(&sc->sc_lock); 222 if (sc->sc_dying) { 223 mutex_exit(&sc->sc_lock); 224 sc = NULL; 225 goto out; 226 } 227 KASSERT(sc->sc_refcnt < INT_MAX); 228 sc->sc_refcnt++; 229 mutex_exit(&sc->sc_lock); 230 out: mutex_exit(&ugenif.lock); 231 232 return sc; 233 } 234 235 static void 236 ugenif_release(struct ugen_softc *sc) 237 { 238 239 mutex_enter(&sc->sc_lock); 240 if (--sc->sc_refcnt < 0) 241 cv_broadcast(&sc->sc_detach_cv); 242 mutex_exit(&sc->sc_lock); 243 } 244 245 static dev_type_open(ugenopen); 246 static dev_type_close(ugenclose); 247 static dev_type_read(ugenread); 248 static dev_type_write(ugenwrite); 249 static dev_type_ioctl(ugenioctl); 250 static dev_type_poll(ugenpoll); 251 static dev_type_kqfilter(ugenkqfilter); 252 253 const struct cdevsw ugen_cdevsw = { 254 .d_open = ugenopen, 255 .d_close = ugenclose, 256 .d_read = ugenread, 257 .d_write = ugenwrite, 258 .d_ioctl = ugenioctl, 259 .d_stop = nostop, 260 .d_tty = notty, 261 .d_poll = ugenpoll, 262 .d_mmap = nommap, 263 .d_kqfilter = ugenkqfilter, 264 .d_discard = nodiscard, 265 .d_flag = D_OTHER, 266 }; 267 268 Static void ugenintr(struct usbd_xfer *, void *, 269 usbd_status); 270 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 271 usbd_status); 272 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 273 usbd_status); 274 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 275 usbd_status); 276 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 277 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 278 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 279 void *, int, struct lwp *); 280 Static int ugen_set_config(struct ugen_softc *, int, int); 281 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 282 int, int *); 283 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 284 Static int ugen_get_alt_index(struct ugen_softc *, int); 285 Static void ugen_clear_endpoints(struct ugen_softc *); 286 287 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 288 #define UGENENDPOINT(n) (minor(n) & 0xf) 289 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 290 291 static int ugenif_match(device_t, cfdata_t, void *); 292 static void ugenif_attach(device_t, device_t, void *); 293 static int ugen_match(device_t, cfdata_t, void *); 294 static void ugen_attach(device_t, device_t, void *); 295 static int ugen_detach(device_t, int); 296 static int ugen_activate(device_t, enum devact); 297 298 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 299 ugen_attach, ugen_detach, ugen_activate); 300 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 301 ugenif_attach, ugen_detach, ugen_activate); 302 303 /* toggle to control attach priority. -1 means "let autoconf decide" */ 304 int ugen_override = -1; 305 306 static int 307 ugen_match(device_t parent, cfdata_t match, void *aux) 308 { 309 struct usb_attach_arg *uaa = aux; 310 int override; 311 312 if (ugen_override != -1) 313 override = ugen_override; 314 else 315 override = match->cf_flags & 1; 316 317 if (override) 318 return UMATCH_HIGHEST; 319 else if (uaa->uaa_usegeneric) 320 return UMATCH_GENERIC; 321 else 322 return UMATCH_NONE; 323 } 324 325 static int 326 ugenif_match(device_t parent, cfdata_t match, void *aux) 327 { 328 /* Assume that they knew what they configured! (see ugenif(4)) */ 329 return UMATCH_HIGHEST; 330 } 331 332 static void 333 ugen_attach(device_t parent, device_t self, void *aux) 334 { 335 struct usb_attach_arg *uaa = aux; 336 struct usbif_attach_arg uiaa; 337 338 memset(&uiaa, 0, sizeof(uiaa)); 339 uiaa.uiaa_port = uaa->uaa_port; 340 uiaa.uiaa_vendor = uaa->uaa_vendor; 341 uiaa.uiaa_product = uaa->uaa_product; 342 uiaa.uiaa_release = uaa->uaa_release; 343 uiaa.uiaa_device = uaa->uaa_device; 344 uiaa.uiaa_configno = -1; 345 uiaa.uiaa_ifaceno = -1; 346 347 ugenif_attach(parent, self, &uiaa); 348 } 349 350 static void 351 ugenif_attach(device_t parent, device_t self, void *aux) 352 { 353 struct ugen_softc *sc = device_private(self); 354 struct usbif_attach_arg *uiaa = aux; 355 struct usbd_device *udev; 356 char *devinfop; 357 usbd_status err; 358 int i, dir, conf; 359 360 aprint_naive("\n"); 361 aprint_normal("\n"); 362 363 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 364 cv_init(&sc->sc_detach_cv, "ugendet"); 365 366 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 367 aprint_normal_dev(self, "%s\n", devinfop); 368 usbd_devinfo_free(devinfop); 369 370 sc->sc_dev = self; 371 sc->sc_udev = udev = uiaa->uiaa_device; 372 373 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 374 for (dir = OUT; dir <= IN; dir++) { 375 struct ugen_endpoint *sce; 376 377 sce = &sc->sc_endpoints[i][dir]; 378 selinit(&sce->rsel); 379 cv_init(&sce->cv, "ugensce"); 380 } 381 } 382 383 if (!pmf_device_register(self, NULL, NULL)) 384 aprint_error_dev(self, "couldn't establish power handler\n"); 385 386 if (uiaa->uiaa_ifaceno < 0) { 387 /* 388 * If we attach the whole device, 389 * set configuration index 0, the default one. 390 */ 391 err = usbd_set_config_index(udev, 0, 0); 392 if (err) { 393 aprint_error_dev(self, 394 "setting configuration index 0 failed\n"); 395 return; 396 } 397 } 398 399 /* Get current configuration */ 400 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 401 402 /* Set up all the local state for this configuration. */ 403 err = ugen_set_config(sc, conf, uiaa->uiaa_ifaceno < 0); 404 if (err) { 405 aprint_error_dev(self, "setting configuration %d failed\n", 406 conf); 407 return; 408 } 409 410 ugenif_get_unit(sc); 411 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 412 sc->sc_attached = 1; 413 } 414 415 Static void 416 ugen_clear_endpoints(struct ugen_softc *sc) 417 { 418 419 /* Clear out the old info, but leave the selinfo and cv initialised. */ 420 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 421 for (int dir = OUT; dir <= IN; dir++) { 422 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 423 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 424 } 425 } 426 } 427 428 Static int 429 ugen_set_config(struct ugen_softc *sc, int configno, int chkopen) 430 { 431 struct usbd_device *dev = sc->sc_udev; 432 usb_config_descriptor_t *cdesc; 433 struct usbd_interface *iface; 434 usb_endpoint_descriptor_t *ed; 435 struct ugen_endpoint *sce; 436 uint8_t niface, nendpt; 437 int ifaceno, endptno, endpt; 438 usbd_status err; 439 int dir; 440 441 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 442 device_xname(sc->sc_dev), configno, sc)); 443 444 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 445 446 if (chkopen) { 447 /* 448 * We start at 1, not 0, because we don't care whether the 449 * control endpoint is open or not. It is always present. 450 */ 451 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 452 if (sc->sc_is_open[endptno]) { 453 DPRINTFN(1, 454 ("ugen_set_config: %s - endpoint %d is open\n", 455 device_xname(sc->sc_dev), endptno)); 456 return USBD_IN_USE; 457 } 458 } 459 460 /* Avoid setting the current value. */ 461 cdesc = usbd_get_config_descriptor(dev); 462 if (!cdesc || cdesc->bConfigurationValue != configno) { 463 err = usbd_set_config_no(dev, configno, 1); 464 if (err) 465 return err; 466 } 467 468 ugen_clear_endpoints(sc); 469 470 err = usbd_interface_count(dev, &niface); 471 if (err) 472 return err; 473 474 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 475 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 476 err = usbd_device2interface_handle(dev, ifaceno, &iface); 477 if (err) 478 return err; 479 err = usbd_endpoint_count(iface, &nendpt); 480 if (err) 481 return err; 482 for (endptno = 0; endptno < nendpt; endptno++) { 483 ed = usbd_interface2endpoint_descriptor(iface,endptno); 484 KASSERT(ed != NULL); 485 endpt = ed->bEndpointAddress; 486 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 487 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 488 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 489 "(%d,%d), sce=%p\n", 490 endptno, endpt, UE_GET_ADDR(endpt), 491 UE_GET_DIR(endpt), sce)); 492 sce->sc = sc; 493 sce->edesc = ed; 494 sce->iface = iface; 495 } 496 } 497 return USBD_NORMAL_COMPLETION; 498 } 499 500 static int 501 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 502 { 503 struct ugen_softc *sc; 504 int unit = UGENUNIT(dev); 505 int endpt = UGENENDPOINT(dev); 506 usb_endpoint_descriptor_t *edesc; 507 struct ugen_endpoint *sce; 508 int dir, isize; 509 usbd_status err; 510 struct usbd_xfer *xfer; 511 int i, j; 512 int error; 513 int opened; 514 515 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 516 517 if ((sc = ugenif_acquire(unit)) == NULL) 518 return ENXIO; 519 520 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 521 flag, mode, unit, endpt)); 522 523 /* The control endpoint allows multiple opens. */ 524 if (endpt == USB_CONTROL_ENDPOINT) { 525 opened = sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 526 error = 0; 527 goto out; 528 } 529 530 if (sc->sc_is_open[endpt]) { 531 error = EBUSY; 532 goto out; 533 } 534 opened = sc->sc_is_open[endpt] = 1; 535 536 /* Make sure there are pipes for all directions. */ 537 for (dir = OUT; dir <= IN; dir++) { 538 if (flag & (dir == OUT ? FWRITE : FREAD)) { 539 sce = &sc->sc_endpoints[endpt][dir]; 540 if (sce->edesc == NULL) { 541 error = ENXIO; 542 goto out; 543 } 544 } 545 } 546 547 /* Actually open the pipes. */ 548 /* XXX Should back out properly if it fails. */ 549 for (dir = OUT; dir <= IN; dir++) { 550 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 551 continue; 552 sce = &sc->sc_endpoints[endpt][dir]; 553 sce->state = 0; 554 sce->timeout = USBD_NO_TIMEOUT; 555 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 556 sc, endpt, dir, sce)); 557 edesc = sce->edesc; 558 switch (edesc->bmAttributes & UE_XFERTYPE) { 559 case UE_INTERRUPT: 560 if (dir == OUT) { 561 err = usbd_open_pipe(sce->iface, 562 edesc->bEndpointAddress, 0, &sce->pipeh); 563 if (err) { 564 error = EIO; 565 goto out; 566 } 567 break; 568 } 569 isize = UGETW(edesc->wMaxPacketSize); 570 if (isize == 0) { /* shouldn't happen */ 571 error = EINVAL; 572 goto out; 573 } 574 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 575 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 576 endpt, isize)); 577 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 578 kmem_free(sce->ibuf, isize); 579 sce->ibuf = NULL; 580 error = ENOMEM; 581 goto out; 582 } 583 err = usbd_open_pipe_intr(sce->iface, 584 edesc->bEndpointAddress, 585 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 586 sce->ibuf, isize, ugenintr, 587 USBD_DEFAULT_INTERVAL); 588 if (err) { 589 clfree(&sce->q); 590 kmem_free(sce->ibuf, isize); 591 sce->ibuf = NULL; 592 error = EIO; 593 goto out; 594 } 595 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 596 break; 597 case UE_BULK: 598 err = usbd_open_pipe(sce->iface, 599 edesc->bEndpointAddress, 0, &sce->pipeh); 600 if (err) { 601 error = EIO; 602 goto out; 603 } 604 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 605 /* 606 * Use request size for non-RA/WB transfers 607 * as the default. 608 */ 609 sce->ra_wb_reqsize = UGEN_BBSIZE; 610 break; 611 case UE_ISOCHRONOUS: 612 if (dir == OUT) { 613 error = EINVAL; 614 goto out; 615 } 616 isize = UGETW(edesc->wMaxPacketSize); 617 if (isize == 0) { /* shouldn't happen */ 618 error = EINVAL; 619 goto out; 620 } 621 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 622 KM_SLEEP); 623 sce->cur = sce->fill = sce->ibuf; 624 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 625 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 626 endpt, isize)); 627 err = usbd_open_pipe(sce->iface, 628 edesc->bEndpointAddress, 0, &sce->pipeh); 629 if (err) { 630 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 631 sce->ibuf = NULL; 632 error = EIO; 633 goto out; 634 } 635 for (i = 0; i < UGEN_NISOREQS; ++i) { 636 sce->isoreqs[i].sce = sce; 637 err = usbd_create_xfer(sce->pipeh, 638 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 639 &xfer); 640 if (err) 641 goto bad; 642 sce->isoreqs[i].xfer = xfer; 643 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 644 for (j = 0; j < UGEN_NISORFRMS; ++j) 645 sce->isoreqs[i].sizes[j] = isize; 646 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 647 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 648 ugen_isoc_rintr); 649 (void)usbd_transfer(xfer); 650 } 651 DPRINTFN(5, ("ugenopen: isoc open done\n")); 652 break; 653 bad: 654 while (--i >= 0) /* implicit buffer free */ 655 usbd_destroy_xfer(sce->isoreqs[i].xfer); 656 usbd_close_pipe(sce->pipeh); 657 sce->pipeh = NULL; 658 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 659 sce->ibuf = NULL; 660 error = ENOMEM; 661 goto out; 662 case UE_CONTROL: 663 sce->timeout = USBD_DEFAULT_TIMEOUT; 664 error = EINVAL; 665 goto out; 666 } 667 } 668 error = 0; 669 out: if (error && opened) 670 sc->sc_is_open[endpt] = 0; 671 ugenif_release(sc); 672 return error; 673 } 674 675 static int 676 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 677 { 678 int endpt = UGENENDPOINT(dev); 679 struct ugen_softc *sc; 680 struct ugen_endpoint *sce; 681 int dir; 682 int i; 683 int error; 684 685 KASSERT(KERNEL_LOCKED_P()); /* sc_is_open */ 686 687 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 688 return ENXIO; 689 690 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 691 flag, mode, UGENUNIT(dev), endpt)); 692 693 KASSERT(sc->sc_is_open[endpt]); 694 695 if (endpt == USB_CONTROL_ENDPOINT) { 696 DPRINTFN(5, ("ugenclose: close control\n")); 697 sc->sc_is_open[endpt] = 0; 698 error = 0; 699 goto out; 700 } 701 702 for (dir = OUT; dir <= IN; dir++) { 703 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 704 continue; 705 sce = &sc->sc_endpoints[endpt][dir]; 706 if (sce->pipeh == NULL) 707 continue; 708 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 709 endpt, dir, sce)); 710 711 usbd_abort_pipe(sce->pipeh); 712 713 int isize = UGETW(sce->edesc->wMaxPacketSize); 714 int msize = 0; 715 716 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 717 case UE_INTERRUPT: 718 ndflush(&sce->q, sce->q.c_cc); 719 clfree(&sce->q); 720 msize = isize; 721 break; 722 case UE_ISOCHRONOUS: 723 for (i = 0; i < UGEN_NISOREQS; ++i) 724 usbd_destroy_xfer(sce->isoreqs[i].xfer); 725 msize = isize * UGEN_NISOFRAMES; 726 break; 727 case UE_BULK: 728 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 729 usbd_destroy_xfer(sce->ra_wb_xfer); 730 msize = sce->ra_wb_bufsize; 731 } 732 break; 733 default: 734 break; 735 } 736 usbd_close_pipe(sce->pipeh); 737 sce->pipeh = NULL; 738 if (sce->ibuf != NULL) { 739 kmem_free(sce->ibuf, msize); 740 sce->ibuf = NULL; 741 } 742 } 743 sc->sc_is_open[endpt] = 0; 744 error = 0; 745 746 out: ugenif_release(sc); 747 return error; 748 } 749 750 Static int 751 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 752 { 753 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 754 uint32_t n, tn; 755 struct usbd_xfer *xfer; 756 usbd_status err; 757 int error = 0; 758 759 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 760 761 if (endpt == USB_CONTROL_ENDPOINT) 762 return ENODEV; 763 764 KASSERT(sce->edesc); 765 KASSERT(sce->pipeh); 766 767 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 768 case UE_INTERRUPT: 769 /* Block until activity occurred. */ 770 mutex_enter(&sc->sc_lock); 771 while (sce->q.c_cc == 0) { 772 if (flag & IO_NDELAY) { 773 mutex_exit(&sc->sc_lock); 774 return EWOULDBLOCK; 775 } 776 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 777 /* "ugenri" */ 778 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 779 mstohz(sce->timeout)); 780 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 781 if (sc->sc_dying) 782 error = EIO; 783 if (error) 784 break; 785 } 786 mutex_exit(&sc->sc_lock); 787 788 /* Transfer as many chunks as possible. */ 789 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 790 n = uimin(sce->q.c_cc, uio->uio_resid); 791 if (n > sizeof(sc->sc_buffer)) 792 n = sizeof(sc->sc_buffer); 793 794 /* Remove a small chunk from the input queue. */ 795 q_to_b(&sce->q, sc->sc_buffer, n); 796 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 797 798 /* Copy the data to the user process. */ 799 error = uiomove(sc->sc_buffer, n, uio); 800 if (error) 801 break; 802 } 803 break; 804 case UE_BULK: 805 if (sce->state & UGEN_BULK_RA) { 806 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 807 uio->uio_resid, sce->ra_wb_used)); 808 xfer = sce->ra_wb_xfer; 809 810 mutex_enter(&sc->sc_lock); 811 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 812 mutex_exit(&sc->sc_lock); 813 return EWOULDBLOCK; 814 } 815 while (uio->uio_resid > 0 && !error) { 816 while (sce->ra_wb_used == 0) { 817 DPRINTFN(5, 818 ("ugenread: sleep on %p\n", 819 sce)); 820 /* "ugenrb" */ 821 error = cv_timedwait_sig(&sce->cv, 822 &sc->sc_lock, mstohz(sce->timeout)); 823 DPRINTFN(5, 824 ("ugenread: woke, error=%d\n", 825 error)); 826 if (sc->sc_dying) 827 error = EIO; 828 if (error) 829 break; 830 } 831 832 /* Copy data to the process. */ 833 while (uio->uio_resid > 0 834 && sce->ra_wb_used > 0) { 835 n = uimin(uio->uio_resid, 836 sce->ra_wb_used); 837 n = uimin(n, sce->limit - sce->cur); 838 error = uiomove(sce->cur, n, uio); 839 if (error) 840 break; 841 sce->cur += n; 842 sce->ra_wb_used -= n; 843 if (sce->cur == sce->limit) 844 sce->cur = sce->ibuf; 845 } 846 847 /* 848 * If the transfers stopped because the 849 * buffer was full, restart them. 850 */ 851 if (sce->state & UGEN_RA_WB_STOP && 852 sce->ra_wb_used < sce->limit - sce->ibuf) { 853 n = (sce->limit - sce->ibuf) 854 - sce->ra_wb_used; 855 usbd_setup_xfer(xfer, sce, NULL, 856 uimin(n, sce->ra_wb_xferlen), 857 0, USBD_NO_TIMEOUT, 858 ugen_bulkra_intr); 859 sce->state &= ~UGEN_RA_WB_STOP; 860 err = usbd_transfer(xfer); 861 if (err != USBD_IN_PROGRESS) 862 /* 863 * The transfer has not been 864 * queued. Setting STOP 865 * will make us try 866 * again at the next read. 867 */ 868 sce->state |= UGEN_RA_WB_STOP; 869 } 870 } 871 mutex_exit(&sc->sc_lock); 872 break; 873 } 874 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 875 0, 0, &xfer); 876 if (error) 877 return error; 878 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 879 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 880 tn = n; 881 err = usbd_bulk_transfer(xfer, sce->pipeh, 882 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 883 sce->timeout, sc->sc_buffer, &tn); 884 if (err) { 885 if (err == USBD_INTERRUPTED) 886 error = EINTR; 887 else if (err == USBD_TIMEOUT) 888 error = ETIMEDOUT; 889 else 890 error = EIO; 891 break; 892 } 893 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 894 error = uiomove(sc->sc_buffer, tn, uio); 895 if (error || tn < n) 896 break; 897 } 898 usbd_destroy_xfer(xfer); 899 break; 900 case UE_ISOCHRONOUS: 901 mutex_enter(&sc->sc_lock); 902 while (sce->cur == sce->fill) { 903 if (flag & IO_NDELAY) { 904 mutex_exit(&sc->sc_lock); 905 return EWOULDBLOCK; 906 } 907 /* "ugenri" */ 908 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 909 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 910 mstohz(sce->timeout)); 911 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 912 if (sc->sc_dying) 913 error = EIO; 914 if (error) 915 break; 916 } 917 918 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 919 if(sce->fill > sce->cur) 920 n = uimin(sce->fill - sce->cur, uio->uio_resid); 921 else 922 n = uimin(sce->limit - sce->cur, uio->uio_resid); 923 924 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 925 926 /* Copy the data to the user process. */ 927 error = uiomove(sce->cur, n, uio); 928 if (error) 929 break; 930 sce->cur += n; 931 if (sce->cur >= sce->limit) 932 sce->cur = sce->ibuf; 933 } 934 mutex_exit(&sc->sc_lock); 935 break; 936 937 938 default: 939 return ENXIO; 940 } 941 return error; 942 } 943 944 static int 945 ugenread(dev_t dev, struct uio *uio, int flag) 946 { 947 int endpt = UGENENDPOINT(dev); 948 struct ugen_softc *sc; 949 int error; 950 951 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 952 return ENXIO; 953 error = ugen_do_read(sc, endpt, uio, flag); 954 ugenif_release(sc); 955 956 return error; 957 } 958 959 Static int 960 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 961 int flag) 962 { 963 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 964 uint32_t n; 965 int error = 0; 966 uint32_t tn; 967 char *dbuf; 968 struct usbd_xfer *xfer; 969 usbd_status err; 970 971 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 972 973 if (endpt == USB_CONTROL_ENDPOINT) 974 return ENODEV; 975 976 KASSERT(sce->edesc); 977 KASSERT(sce->pipeh); 978 979 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 980 case UE_BULK: 981 if (sce->state & UGEN_BULK_WB) { 982 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 983 uio->uio_resid, sce->ra_wb_used)); 984 xfer = sce->ra_wb_xfer; 985 986 mutex_enter(&sc->sc_lock); 987 if (sce->ra_wb_used == sce->limit - sce->ibuf && 988 flag & IO_NDELAY) { 989 mutex_exit(&sc->sc_lock); 990 return EWOULDBLOCK; 991 } 992 while (uio->uio_resid > 0 && !error) { 993 while (sce->ra_wb_used == 994 sce->limit - sce->ibuf) { 995 DPRINTFN(5, 996 ("ugenwrite: sleep on %p\n", 997 sce)); 998 /* "ugenwb" */ 999 error = cv_timedwait_sig(&sce->cv, 1000 &sc->sc_lock, mstohz(sce->timeout)); 1001 DPRINTFN(5, 1002 ("ugenwrite: woke, error=%d\n", 1003 error)); 1004 if (sc->sc_dying) 1005 error = EIO; 1006 if (error) 1007 break; 1008 } 1009 1010 /* Copy data from the process. */ 1011 while (uio->uio_resid > 0 && 1012 sce->ra_wb_used < sce->limit - sce->ibuf) { 1013 n = uimin(uio->uio_resid, 1014 (sce->limit - sce->ibuf) 1015 - sce->ra_wb_used); 1016 n = uimin(n, sce->limit - sce->fill); 1017 error = uiomove(sce->fill, n, uio); 1018 if (error) 1019 break; 1020 sce->fill += n; 1021 sce->ra_wb_used += n; 1022 if (sce->fill == sce->limit) 1023 sce->fill = sce->ibuf; 1024 } 1025 1026 /* 1027 * If the transfers stopped because the 1028 * buffer was empty, restart them. 1029 */ 1030 if (sce->state & UGEN_RA_WB_STOP && 1031 sce->ra_wb_used > 0) { 1032 dbuf = (char *)usbd_get_buffer(xfer); 1033 n = uimin(sce->ra_wb_used, 1034 sce->ra_wb_xferlen); 1035 tn = uimin(n, sce->limit - sce->cur); 1036 memcpy(dbuf, sce->cur, tn); 1037 dbuf += tn; 1038 if (n - tn > 0) 1039 memcpy(dbuf, sce->ibuf, 1040 n - tn); 1041 usbd_setup_xfer(xfer, sce, NULL, n, 1042 0, USBD_NO_TIMEOUT, 1043 ugen_bulkwb_intr); 1044 sce->state &= ~UGEN_RA_WB_STOP; 1045 err = usbd_transfer(xfer); 1046 if (err != USBD_IN_PROGRESS) 1047 /* 1048 * The transfer has not been 1049 * queued. Setting STOP 1050 * will make us try again 1051 * at the next read. 1052 */ 1053 sce->state |= UGEN_RA_WB_STOP; 1054 } 1055 } 1056 mutex_exit(&sc->sc_lock); 1057 break; 1058 } 1059 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 1060 0, 0, &xfer); 1061 if (error) 1062 return error; 1063 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 1064 error = uiomove(sc->sc_buffer, n, uio); 1065 if (error) 1066 break; 1067 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1068 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 1069 sc->sc_buffer, &n); 1070 if (err) { 1071 if (err == USBD_INTERRUPTED) 1072 error = EINTR; 1073 else if (err == USBD_TIMEOUT) 1074 error = ETIMEDOUT; 1075 else 1076 error = EIO; 1077 break; 1078 } 1079 } 1080 usbd_destroy_xfer(xfer); 1081 break; 1082 case UE_INTERRUPT: 1083 error = usbd_create_xfer(sce->pipeh, 1084 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 1085 if (error) 1086 return error; 1087 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 1088 uio->uio_resid)) != 0) { 1089 error = uiomove(sc->sc_buffer, n, uio); 1090 if (error) 1091 break; 1092 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1093 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 1094 sce->timeout, sc->sc_buffer, &n); 1095 if (err) { 1096 if (err == USBD_INTERRUPTED) 1097 error = EINTR; 1098 else if (err == USBD_TIMEOUT) 1099 error = ETIMEDOUT; 1100 else 1101 error = EIO; 1102 break; 1103 } 1104 } 1105 usbd_destroy_xfer(xfer); 1106 break; 1107 default: 1108 return ENXIO; 1109 } 1110 return error; 1111 } 1112 1113 static int 1114 ugenwrite(dev_t dev, struct uio *uio, int flag) 1115 { 1116 int endpt = UGENENDPOINT(dev); 1117 struct ugen_softc *sc; 1118 int error; 1119 1120 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1121 return ENXIO; 1122 error = ugen_do_write(sc, endpt, uio, flag); 1123 ugenif_release(sc); 1124 1125 return error; 1126 } 1127 1128 static int 1129 ugen_activate(device_t self, enum devact act) 1130 { 1131 struct ugen_softc *sc = device_private(self); 1132 1133 switch (act) { 1134 case DVACT_DEACTIVATE: 1135 sc->sc_dying = 1; 1136 return 0; 1137 default: 1138 return EOPNOTSUPP; 1139 } 1140 } 1141 1142 static int 1143 ugen_detach(device_t self, int flags) 1144 { 1145 struct ugen_softc *sc = device_private(self); 1146 struct ugen_endpoint *sce; 1147 int i, dir; 1148 int maj, mn; 1149 1150 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1151 1152 sc->sc_dying = 1; 1153 pmf_device_deregister(self); 1154 1155 if (!sc->sc_attached) 1156 goto out; 1157 1158 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1159 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1160 for (dir = OUT; dir <= IN; dir++) { 1161 sce = &sc->sc_endpoints[i][dir]; 1162 if (sce->pipeh) 1163 usbd_abort_pipe(sce->pipeh); 1164 } 1165 } 1166 1167 mutex_enter(&sc->sc_lock); 1168 if (--sc->sc_refcnt >= 0) { 1169 /* Wake everyone */ 1170 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1171 cv_signal(&sc->sc_endpoints[i][IN].cv); 1172 /* Wait for processes to go away. */ 1173 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1174 aprint_error_dev(self, ": didn't detach\n"); 1175 } 1176 mutex_exit(&sc->sc_lock); 1177 1178 /* locate the major number */ 1179 maj = cdevsw_lookup_major(&ugen_cdevsw); 1180 1181 /* Nuke the vnodes for any open instances (calls close). */ 1182 mn = sc->sc_unit * USB_MAX_ENDPOINTS; 1183 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1184 1185 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1186 ugenif_put_unit(sc); 1187 1188 out: for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1189 for (dir = OUT; dir <= IN; dir++) { 1190 sce = &sc->sc_endpoints[i][dir]; 1191 seldestroy(&sce->rsel); 1192 cv_destroy(&sce->cv); 1193 } 1194 } 1195 1196 cv_destroy(&sc->sc_detach_cv); 1197 mutex_destroy(&sc->sc_lock); 1198 1199 return 0; 1200 } 1201 1202 Static void 1203 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1204 { 1205 struct ugen_endpoint *sce = addr; 1206 struct ugen_softc *sc = sce->sc; 1207 uint32_t count; 1208 u_char *ibuf; 1209 1210 if (status == USBD_CANCELLED) 1211 return; 1212 1213 if (status != USBD_NORMAL_COMPLETION) { 1214 DPRINTF(("ugenintr: status=%d\n", status)); 1215 if (status == USBD_STALLED) 1216 usbd_clear_endpoint_stall_async(sce->pipeh); 1217 return; 1218 } 1219 1220 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1221 ibuf = sce->ibuf; 1222 1223 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1224 xfer, status, count)); 1225 DPRINTFN(5, (" data = %02x %02x %02x\n", 1226 ibuf[0], ibuf[1], ibuf[2])); 1227 1228 mutex_enter(&sc->sc_lock); 1229 (void)b_to_q(ibuf, count, &sce->q); 1230 cv_signal(&sce->cv); 1231 mutex_exit(&sc->sc_lock); 1232 selnotify(&sce->rsel, 0, 0); 1233 } 1234 1235 Static void 1236 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1237 usbd_status status) 1238 { 1239 struct isoreq *req = addr; 1240 struct ugen_endpoint *sce = req->sce; 1241 struct ugen_softc *sc = sce->sc; 1242 uint32_t count, n; 1243 int i, isize; 1244 1245 /* Return if we are aborting. */ 1246 if (status == USBD_CANCELLED) 1247 return; 1248 1249 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1250 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1251 (long)(req - sce->isoreqs), count)); 1252 1253 mutex_enter(&sc->sc_lock); 1254 1255 /* throw away oldest input if the buffer is full */ 1256 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1257 sce->cur += count; 1258 if (sce->cur >= sce->limit) 1259 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1260 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1261 count)); 1262 } 1263 1264 isize = UGETW(sce->edesc->wMaxPacketSize); 1265 for (i = 0; i < UGEN_NISORFRMS; i++) { 1266 uint32_t actlen = req->sizes[i]; 1267 char const *tbuf = (char const *)req->dmabuf + isize * i; 1268 1269 /* copy data to buffer */ 1270 while (actlen > 0) { 1271 n = uimin(actlen, sce->limit - sce->fill); 1272 memcpy(sce->fill, tbuf, n); 1273 1274 tbuf += n; 1275 actlen -= n; 1276 sce->fill += n; 1277 if (sce->fill == sce->limit) 1278 sce->fill = sce->ibuf; 1279 } 1280 1281 /* setup size for next transfer */ 1282 req->sizes[i] = isize; 1283 } 1284 1285 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1286 ugen_isoc_rintr); 1287 (void)usbd_transfer(xfer); 1288 1289 cv_signal(&sce->cv); 1290 mutex_exit(&sc->sc_lock); 1291 selnotify(&sce->rsel, 0, 0); 1292 } 1293 1294 Static void 1295 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1296 usbd_status status) 1297 { 1298 struct ugen_endpoint *sce = addr; 1299 struct ugen_softc *sc = sce->sc; 1300 uint32_t count, n; 1301 char const *tbuf; 1302 usbd_status err; 1303 1304 /* Return if we are aborting. */ 1305 if (status == USBD_CANCELLED) 1306 return; 1307 1308 if (status != USBD_NORMAL_COMPLETION) { 1309 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1310 sce->state |= UGEN_RA_WB_STOP; 1311 if (status == USBD_STALLED) 1312 usbd_clear_endpoint_stall_async(sce->pipeh); 1313 return; 1314 } 1315 1316 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1317 1318 mutex_enter(&sc->sc_lock); 1319 1320 /* Keep track of how much is in the buffer. */ 1321 sce->ra_wb_used += count; 1322 1323 /* Copy data to buffer. */ 1324 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1325 n = uimin(count, sce->limit - sce->fill); 1326 memcpy(sce->fill, tbuf, n); 1327 tbuf += n; 1328 count -= n; 1329 sce->fill += n; 1330 if (sce->fill == sce->limit) 1331 sce->fill = sce->ibuf; 1332 if (count > 0) { 1333 memcpy(sce->fill, tbuf, count); 1334 sce->fill += count; 1335 } 1336 1337 /* Set up the next request if necessary. */ 1338 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1339 if (n > 0) { 1340 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1341 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1342 err = usbd_transfer(xfer); 1343 if (err != USBD_IN_PROGRESS) { 1344 printf("usbd_bulkra_intr: error=%d\n", err); 1345 /* 1346 * The transfer has not been queued. Setting STOP 1347 * will make us try again at the next read. 1348 */ 1349 sce->state |= UGEN_RA_WB_STOP; 1350 } 1351 } 1352 else 1353 sce->state |= UGEN_RA_WB_STOP; 1354 1355 cv_signal(&sce->cv); 1356 mutex_exit(&sc->sc_lock); 1357 selnotify(&sce->rsel, 0, 0); 1358 } 1359 1360 Static void 1361 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1362 usbd_status status) 1363 { 1364 struct ugen_endpoint *sce = addr; 1365 struct ugen_softc *sc = sce->sc; 1366 uint32_t count, n; 1367 char *tbuf; 1368 usbd_status err; 1369 1370 /* Return if we are aborting. */ 1371 if (status == USBD_CANCELLED) 1372 return; 1373 1374 if (status != USBD_NORMAL_COMPLETION) { 1375 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1376 sce->state |= UGEN_RA_WB_STOP; 1377 if (status == USBD_STALLED) 1378 usbd_clear_endpoint_stall_async(sce->pipeh); 1379 return; 1380 } 1381 1382 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1383 1384 mutex_enter(&sc->sc_lock); 1385 1386 /* Keep track of how much is in the buffer. */ 1387 sce->ra_wb_used -= count; 1388 1389 /* Update buffer pointers. */ 1390 sce->cur += count; 1391 if (sce->cur >= sce->limit) 1392 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1393 1394 /* Set up next request if necessary. */ 1395 if (sce->ra_wb_used > 0) { 1396 /* copy data from buffer */ 1397 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1398 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1399 n = uimin(count, sce->limit - sce->cur); 1400 memcpy(tbuf, sce->cur, n); 1401 tbuf += n; 1402 if (count - n > 0) 1403 memcpy(tbuf, sce->ibuf, count - n); 1404 1405 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1406 ugen_bulkwb_intr); 1407 err = usbd_transfer(xfer); 1408 if (err != USBD_IN_PROGRESS) { 1409 printf("usbd_bulkwb_intr: error=%d\n", err); 1410 /* 1411 * The transfer has not been queued. Setting STOP 1412 * will make us try again at the next write. 1413 */ 1414 sce->state |= UGEN_RA_WB_STOP; 1415 } 1416 } 1417 else 1418 sce->state |= UGEN_RA_WB_STOP; 1419 1420 cv_signal(&sce->cv); 1421 mutex_exit(&sc->sc_lock); 1422 selnotify(&sce->rsel, 0, 0); 1423 } 1424 1425 Static usbd_status 1426 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1427 { 1428 struct usbd_interface *iface; 1429 usb_endpoint_descriptor_t *ed; 1430 usbd_status err; 1431 struct ugen_endpoint *sce; 1432 uint8_t niface, nendpt, endptno, endpt; 1433 int dir; 1434 1435 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1436 1437 err = usbd_interface_count(sc->sc_udev, &niface); 1438 if (err) 1439 return err; 1440 if (ifaceidx < 0 || ifaceidx >= niface) 1441 return USBD_INVAL; 1442 1443 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1444 if (err) 1445 return err; 1446 err = usbd_endpoint_count(iface, &nendpt); 1447 if (err) 1448 return err; 1449 1450 /* change setting */ 1451 err = usbd_set_interface(iface, altno); 1452 if (err) 1453 return err; 1454 1455 err = usbd_endpoint_count(iface, &nendpt); 1456 if (err) 1457 return err; 1458 1459 ugen_clear_endpoints(sc); 1460 1461 for (endptno = 0; endptno < nendpt; endptno++) { 1462 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1463 KASSERT(ed != NULL); 1464 endpt = ed->bEndpointAddress; 1465 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1466 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1467 sce->sc = sc; 1468 sce->edesc = ed; 1469 sce->iface = iface; 1470 } 1471 return 0; 1472 } 1473 1474 /* Retrieve a complete descriptor for a certain device and index. */ 1475 Static usb_config_descriptor_t * 1476 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1477 { 1478 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1479 int len; 1480 usbd_status err; 1481 1482 if (index == USB_CURRENT_CONFIG_INDEX) { 1483 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1484 if (tdesc == NULL) 1485 return NULL; 1486 len = UGETW(tdesc->wTotalLength); 1487 if (lenp) 1488 *lenp = len; 1489 cdesc = kmem_alloc(len, KM_SLEEP); 1490 memcpy(cdesc, tdesc, len); 1491 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1492 } else { 1493 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1494 if (err) 1495 return 0; 1496 len = UGETW(cdescr.wTotalLength); 1497 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1498 if (lenp) 1499 *lenp = len; 1500 cdesc = kmem_alloc(len, KM_SLEEP); 1501 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1502 if (err) { 1503 kmem_free(cdesc, len); 1504 return 0; 1505 } 1506 } 1507 return cdesc; 1508 } 1509 1510 Static int 1511 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1512 { 1513 struct usbd_interface *iface; 1514 usbd_status err; 1515 1516 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1517 if (err) 1518 return -1; 1519 return usbd_get_interface_altindex(iface); 1520 } 1521 1522 Static int 1523 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1524 void *addr, int flag, struct lwp *l) 1525 { 1526 struct ugen_endpoint *sce; 1527 usbd_status err; 1528 struct usbd_interface *iface; 1529 struct usb_config_desc *cd; 1530 usb_config_descriptor_t *cdesc; 1531 struct usb_interface_desc *id; 1532 usb_interface_descriptor_t *idesc; 1533 struct usb_endpoint_desc *ed; 1534 usb_endpoint_descriptor_t *edesc; 1535 struct usb_alt_interface *ai; 1536 struct usb_string_desc *si; 1537 uint8_t conf, alt; 1538 int cdesclen; 1539 int error; 1540 int dir; 1541 1542 KASSERT(KERNEL_LOCKED_P()); /* ugen_set_config */ 1543 1544 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1545 1546 switch (cmd) { 1547 case FIONBIO: 1548 /* All handled in the upper FS layer. */ 1549 return 0; 1550 case USB_SET_SHORT_XFER: 1551 if (endpt == USB_CONTROL_ENDPOINT) 1552 return EINVAL; 1553 /* This flag only affects read */ 1554 sce = &sc->sc_endpoints[endpt][IN]; 1555 if (sce == NULL || sce->pipeh == NULL) 1556 return EINVAL; 1557 if (*(int *)addr) 1558 sce->state |= UGEN_SHORT_OK; 1559 else 1560 sce->state &= ~UGEN_SHORT_OK; 1561 return 0; 1562 case USB_SET_TIMEOUT: 1563 for (dir = OUT; dir <= IN; dir++) { 1564 sce = &sc->sc_endpoints[endpt][dir]; 1565 if (sce == NULL) 1566 return EINVAL; 1567 1568 sce->timeout = *(int *)addr; 1569 } 1570 return 0; 1571 case USB_SET_BULK_RA: 1572 if (endpt == USB_CONTROL_ENDPOINT) 1573 return EINVAL; 1574 sce = &sc->sc_endpoints[endpt][IN]; 1575 if (sce == NULL || sce->pipeh == NULL) 1576 return EINVAL; 1577 edesc = sce->edesc; 1578 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1579 return EINVAL; 1580 1581 if (*(int *)addr) { 1582 /* Only turn RA on if it's currently off. */ 1583 if (sce->state & UGEN_BULK_RA) 1584 return 0; 1585 1586 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1587 /* shouldn't happen */ 1588 return EINVAL; 1589 error = usbd_create_xfer(sce->pipeh, 1590 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1591 if (error) 1592 return error; 1593 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1594 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1595 sce->fill = sce->cur = sce->ibuf; 1596 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1597 sce->ra_wb_used = 0; 1598 sce->state |= UGEN_BULK_RA; 1599 sce->state &= ~UGEN_RA_WB_STOP; 1600 /* Now start reading. */ 1601 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1602 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1603 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1604 err = usbd_transfer(sce->ra_wb_xfer); 1605 if (err != USBD_IN_PROGRESS) { 1606 sce->state &= ~UGEN_BULK_RA; 1607 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1608 sce->ibuf = NULL; 1609 usbd_destroy_xfer(sce->ra_wb_xfer); 1610 return EIO; 1611 } 1612 } else { 1613 /* Only turn RA off if it's currently on. */ 1614 if (!(sce->state & UGEN_BULK_RA)) 1615 return 0; 1616 1617 sce->state &= ~UGEN_BULK_RA; 1618 usbd_abort_pipe(sce->pipeh); 1619 usbd_destroy_xfer(sce->ra_wb_xfer); 1620 /* 1621 * XXX Discard whatever's in the buffer, but we 1622 * should keep it around and drain the buffer 1623 * instead. 1624 */ 1625 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1626 sce->ibuf = NULL; 1627 } 1628 return 0; 1629 case USB_SET_BULK_WB: 1630 if (endpt == USB_CONTROL_ENDPOINT) 1631 return EINVAL; 1632 sce = &sc->sc_endpoints[endpt][OUT]; 1633 if (sce == NULL || sce->pipeh == NULL) 1634 return EINVAL; 1635 edesc = sce->edesc; 1636 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1637 return EINVAL; 1638 1639 if (*(int *)addr) { 1640 /* Only turn WB on if it's currently off. */ 1641 if (sce->state & UGEN_BULK_WB) 1642 return 0; 1643 1644 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1645 /* shouldn't happen */ 1646 return EINVAL; 1647 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1648 0, 0, &sce->ra_wb_xfer); 1649 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1650 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1651 sce->fill = sce->cur = sce->ibuf; 1652 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1653 sce->ra_wb_used = 0; 1654 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1655 } else { 1656 /* Only turn WB off if it's currently on. */ 1657 if (!(sce->state & UGEN_BULK_WB)) 1658 return 0; 1659 1660 sce->state &= ~UGEN_BULK_WB; 1661 /* 1662 * XXX Discard whatever's in the buffer, but we 1663 * should keep it around and keep writing to 1664 * drain the buffer instead. 1665 */ 1666 usbd_abort_pipe(sce->pipeh); 1667 usbd_destroy_xfer(sce->ra_wb_xfer); 1668 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1669 sce->ibuf = NULL; 1670 } 1671 return 0; 1672 case USB_SET_BULK_RA_OPT: 1673 case USB_SET_BULK_WB_OPT: 1674 { 1675 struct usb_bulk_ra_wb_opt *opt; 1676 1677 if (endpt == USB_CONTROL_ENDPOINT) 1678 return EINVAL; 1679 opt = (struct usb_bulk_ra_wb_opt *)addr; 1680 if (cmd == USB_SET_BULK_RA_OPT) 1681 sce = &sc->sc_endpoints[endpt][IN]; 1682 else 1683 sce = &sc->sc_endpoints[endpt][OUT]; 1684 if (sce == NULL || sce->pipeh == NULL) 1685 return EINVAL; 1686 if (opt->ra_wb_buffer_size < 1 || 1687 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1688 opt->ra_wb_request_size < 1 || 1689 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1690 return EINVAL; 1691 /* 1692 * XXX These changes do not take effect until the 1693 * next time RA/WB mode is enabled but they ought to 1694 * take effect immediately. 1695 */ 1696 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1697 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1698 return 0; 1699 } 1700 default: 1701 break; 1702 } 1703 1704 if (endpt != USB_CONTROL_ENDPOINT) 1705 return EINVAL; 1706 1707 switch (cmd) { 1708 #ifdef UGEN_DEBUG 1709 case USB_SETDEBUG: 1710 ugendebug = *(int *)addr; 1711 break; 1712 #endif 1713 case USB_GET_CONFIG: 1714 err = usbd_get_config(sc->sc_udev, &conf); 1715 if (err) 1716 return EIO; 1717 *(int *)addr = conf; 1718 break; 1719 case USB_SET_CONFIG: 1720 if (!(flag & FWRITE)) 1721 return EPERM; 1722 err = ugen_set_config(sc, *(int *)addr, 1); 1723 switch (err) { 1724 case USBD_NORMAL_COMPLETION: 1725 break; 1726 case USBD_IN_USE: 1727 return EBUSY; 1728 default: 1729 return EIO; 1730 } 1731 break; 1732 case USB_GET_ALTINTERFACE: 1733 ai = (struct usb_alt_interface *)addr; 1734 err = usbd_device2interface_handle(sc->sc_udev, 1735 ai->uai_interface_index, &iface); 1736 if (err) 1737 return EINVAL; 1738 idesc = usbd_get_interface_descriptor(iface); 1739 if (idesc == NULL) 1740 return EIO; 1741 ai->uai_alt_no = idesc->bAlternateSetting; 1742 break; 1743 case USB_SET_ALTINTERFACE: 1744 if (!(flag & FWRITE)) 1745 return EPERM; 1746 ai = (struct usb_alt_interface *)addr; 1747 err = usbd_device2interface_handle(sc->sc_udev, 1748 ai->uai_interface_index, &iface); 1749 if (err) 1750 return EINVAL; 1751 err = ugen_set_interface(sc, ai->uai_interface_index, 1752 ai->uai_alt_no); 1753 if (err) 1754 return EINVAL; 1755 break; 1756 case USB_GET_NO_ALT: 1757 ai = (struct usb_alt_interface *)addr; 1758 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1759 if (cdesc == NULL) 1760 return EINVAL; 1761 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1762 if (idesc == NULL) { 1763 kmem_free(cdesc, cdesclen); 1764 return EINVAL; 1765 } 1766 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1767 idesc->bInterfaceNumber); 1768 kmem_free(cdesc, cdesclen); 1769 break; 1770 case USB_GET_DEVICE_DESC: 1771 *(usb_device_descriptor_t *)addr = 1772 *usbd_get_device_descriptor(sc->sc_udev); 1773 break; 1774 case USB_GET_CONFIG_DESC: 1775 cd = (struct usb_config_desc *)addr; 1776 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1777 if (cdesc == NULL) 1778 return EINVAL; 1779 cd->ucd_desc = *cdesc; 1780 kmem_free(cdesc, cdesclen); 1781 break; 1782 case USB_GET_INTERFACE_DESC: 1783 id = (struct usb_interface_desc *)addr; 1784 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1785 if (cdesc == NULL) 1786 return EINVAL; 1787 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1788 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1789 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1790 else 1791 alt = id->uid_alt_index; 1792 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1793 if (idesc == NULL) { 1794 kmem_free(cdesc, cdesclen); 1795 return EINVAL; 1796 } 1797 id->uid_desc = *idesc; 1798 kmem_free(cdesc, cdesclen); 1799 break; 1800 case USB_GET_ENDPOINT_DESC: 1801 ed = (struct usb_endpoint_desc *)addr; 1802 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1803 if (cdesc == NULL) 1804 return EINVAL; 1805 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1806 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1807 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1808 else 1809 alt = ed->ued_alt_index; 1810 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1811 alt, ed->ued_endpoint_index); 1812 if (edesc == NULL) { 1813 kmem_free(cdesc, cdesclen); 1814 return EINVAL; 1815 } 1816 ed->ued_desc = *edesc; 1817 kmem_free(cdesc, cdesclen); 1818 break; 1819 case USB_GET_FULL_DESC: 1820 { 1821 int len; 1822 struct iovec iov; 1823 struct uio uio; 1824 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1825 1826 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1827 if (cdesc == NULL) 1828 return EINVAL; 1829 len = cdesclen; 1830 if (len > fd->ufd_size) 1831 len = fd->ufd_size; 1832 iov.iov_base = (void *)fd->ufd_data; 1833 iov.iov_len = len; 1834 uio.uio_iov = &iov; 1835 uio.uio_iovcnt = 1; 1836 uio.uio_resid = len; 1837 uio.uio_offset = 0; 1838 uio.uio_rw = UIO_READ; 1839 uio.uio_vmspace = l->l_proc->p_vmspace; 1840 error = uiomove((void *)cdesc, len, &uio); 1841 kmem_free(cdesc, cdesclen); 1842 return error; 1843 } 1844 case USB_GET_STRING_DESC: { 1845 int len; 1846 si = (struct usb_string_desc *)addr; 1847 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1848 si->usd_language_id, &si->usd_desc, &len); 1849 if (err) 1850 return EINVAL; 1851 break; 1852 } 1853 case USB_DO_REQUEST: 1854 { 1855 struct usb_ctl_request *ur = (void *)addr; 1856 int len = UGETW(ur->ucr_request.wLength); 1857 struct iovec iov; 1858 struct uio uio; 1859 void *ptr = 0; 1860 usbd_status xerr; 1861 1862 error = 0; 1863 1864 if (!(flag & FWRITE)) 1865 return EPERM; 1866 /* Avoid requests that would damage the bus integrity. */ 1867 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1868 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1869 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1870 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1871 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1872 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1873 return EINVAL; 1874 1875 if (len < 0 || len > 32767) 1876 return EINVAL; 1877 if (len != 0) { 1878 iov.iov_base = (void *)ur->ucr_data; 1879 iov.iov_len = len; 1880 uio.uio_iov = &iov; 1881 uio.uio_iovcnt = 1; 1882 uio.uio_resid = len; 1883 uio.uio_offset = 0; 1884 uio.uio_rw = 1885 ur->ucr_request.bmRequestType & UT_READ ? 1886 UIO_READ : UIO_WRITE; 1887 uio.uio_vmspace = l->l_proc->p_vmspace; 1888 ptr = kmem_alloc(len, KM_SLEEP); 1889 if (uio.uio_rw == UIO_WRITE) { 1890 error = uiomove(ptr, len, &uio); 1891 if (error) 1892 goto ret; 1893 } 1894 } 1895 sce = &sc->sc_endpoints[endpt][IN]; 1896 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1897 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1898 if (xerr) { 1899 error = EIO; 1900 goto ret; 1901 } 1902 if (len != 0) { 1903 if (uio.uio_rw == UIO_READ) { 1904 size_t alen = uimin(len, ur->ucr_actlen); 1905 error = uiomove(ptr, alen, &uio); 1906 if (error) 1907 goto ret; 1908 } 1909 } 1910 ret: 1911 if (ptr) 1912 kmem_free(ptr, len); 1913 return error; 1914 } 1915 case USB_GET_DEVICEINFO: 1916 usbd_fill_deviceinfo(sc->sc_udev, 1917 (struct usb_device_info *)addr, 0); 1918 break; 1919 case USB_GET_DEVICEINFO_OLD: 1920 { 1921 int ret; 1922 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1923 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1924 usbd_devinfo_vp, usbd_printBCD), 1925 enosys(), ret); 1926 if (ret == 0) 1927 return 0; 1928 return EINVAL; 1929 } 1930 default: 1931 return EINVAL; 1932 } 1933 return 0; 1934 } 1935 1936 static int 1937 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1938 { 1939 int endpt = UGENENDPOINT(dev); 1940 struct ugen_softc *sc; 1941 int error; 1942 1943 if ((sc = ugenif_acquire(UGENUNIT(dev))) == 0) 1944 return ENXIO; 1945 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1946 ugenif_release(sc); 1947 1948 return error; 1949 } 1950 1951 static int 1952 ugenpoll(dev_t dev, int events, struct lwp *l) 1953 { 1954 struct ugen_softc *sc; 1955 struct ugen_endpoint *sce_in, *sce_out; 1956 int revents = 0; 1957 1958 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1959 return POLLHUP; 1960 1961 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 1962 revents |= POLLERR; 1963 goto out; 1964 } 1965 1966 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1967 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1968 KASSERT(sce_in->edesc || sce_out->edesc); 1969 KASSERT(sce_in->pipeh || sce_out->pipeh); 1970 1971 mutex_enter(&sc->sc_lock); 1972 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1973 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1974 case UE_INTERRUPT: 1975 if (sce_in->q.c_cc > 0) 1976 revents |= events & (POLLIN | POLLRDNORM); 1977 else 1978 selrecord(l, &sce_in->rsel); 1979 break; 1980 case UE_ISOCHRONOUS: 1981 if (sce_in->cur != sce_in->fill) 1982 revents |= events & (POLLIN | POLLRDNORM); 1983 else 1984 selrecord(l, &sce_in->rsel); 1985 break; 1986 case UE_BULK: 1987 if (sce_in->state & UGEN_BULK_RA) { 1988 if (sce_in->ra_wb_used > 0) 1989 revents |= events & 1990 (POLLIN | POLLRDNORM); 1991 else 1992 selrecord(l, &sce_in->rsel); 1993 break; 1994 } 1995 /* 1996 * We have no easy way of determining if a read will 1997 * yield any data or a write will happen. 1998 * Pretend they will. 1999 */ 2000 revents |= events & (POLLIN | POLLRDNORM); 2001 break; 2002 default: 2003 break; 2004 } 2005 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 2006 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 2007 case UE_INTERRUPT: 2008 case UE_ISOCHRONOUS: 2009 /* XXX unimplemented */ 2010 break; 2011 case UE_BULK: 2012 if (sce_out->state & UGEN_BULK_WB) { 2013 if (sce_out->ra_wb_used < 2014 sce_out->limit - sce_out->ibuf) 2015 revents |= events & 2016 (POLLOUT | POLLWRNORM); 2017 else 2018 selrecord(l, &sce_out->rsel); 2019 break; 2020 } 2021 /* 2022 * We have no easy way of determining if a read will 2023 * yield any data or a write will happen. 2024 * Pretend they will. 2025 */ 2026 revents |= events & (POLLOUT | POLLWRNORM); 2027 break; 2028 default: 2029 break; 2030 } 2031 2032 mutex_exit(&sc->sc_lock); 2033 2034 out: ugenif_release(sc); 2035 return revents; 2036 } 2037 2038 static void 2039 filt_ugenrdetach(struct knote *kn) 2040 { 2041 struct ugen_endpoint *sce = kn->kn_hook; 2042 struct ugen_softc *sc = sce->sc; 2043 2044 mutex_enter(&sc->sc_lock); 2045 selremove_knote(&sce->rsel, kn); 2046 mutex_exit(&sc->sc_lock); 2047 } 2048 2049 static int 2050 filt_ugenread_intr(struct knote *kn, long hint) 2051 { 2052 struct ugen_endpoint *sce = kn->kn_hook; 2053 struct ugen_softc *sc = sce->sc; 2054 int ret; 2055 2056 mutex_enter(&sc->sc_lock); 2057 if (sc->sc_dying) { 2058 ret = 0; 2059 } else { 2060 kn->kn_data = sce->q.c_cc; 2061 ret = kn->kn_data > 0; 2062 } 2063 mutex_exit(&sc->sc_lock); 2064 2065 return ret; 2066 } 2067 2068 static int 2069 filt_ugenread_isoc(struct knote *kn, long hint) 2070 { 2071 struct ugen_endpoint *sce = kn->kn_hook; 2072 struct ugen_softc *sc = sce->sc; 2073 int ret; 2074 2075 mutex_enter(&sc->sc_lock); 2076 if (sc->sc_dying) { 2077 ret = 0; 2078 } else if (sce->cur == sce->fill) { 2079 ret = 0; 2080 } else if (sce->cur < sce->fill) { 2081 kn->kn_data = sce->fill - sce->cur; 2082 ret = 1; 2083 } else { 2084 kn->kn_data = (sce->limit - sce->cur) + 2085 (sce->fill - sce->ibuf); 2086 ret = 1; 2087 } 2088 mutex_exit(&sc->sc_lock); 2089 2090 return ret; 2091 } 2092 2093 static int 2094 filt_ugenread_bulk(struct knote *kn, long hint) 2095 { 2096 struct ugen_endpoint *sce = kn->kn_hook; 2097 struct ugen_softc *sc = sce->sc; 2098 int ret; 2099 2100 mutex_enter(&sc->sc_lock); 2101 if (sc->sc_dying) { 2102 ret = 0; 2103 } else if (!(sce->state & UGEN_BULK_RA)) { 2104 /* 2105 * We have no easy way of determining if a read will 2106 * yield any data or a write will happen. 2107 * So, emulate "seltrue". 2108 */ 2109 ret = filt_seltrue(kn, hint); 2110 } else if (sce->ra_wb_used == 0) { 2111 ret = 0; 2112 } else { 2113 kn->kn_data = sce->ra_wb_used; 2114 ret = 1; 2115 } 2116 mutex_exit(&sc->sc_lock); 2117 2118 return ret; 2119 } 2120 2121 static int 2122 filt_ugenwrite_bulk(struct knote *kn, long hint) 2123 { 2124 struct ugen_endpoint *sce = kn->kn_hook; 2125 struct ugen_softc *sc = sce->sc; 2126 int ret; 2127 2128 mutex_enter(&sc->sc_lock); 2129 if (sc->sc_dying) { 2130 ret = 0; 2131 } else if (!(sce->state & UGEN_BULK_WB)) { 2132 /* 2133 * We have no easy way of determining if a read will 2134 * yield any data or a write will happen. 2135 * So, emulate "seltrue". 2136 */ 2137 ret = filt_seltrue(kn, hint); 2138 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2139 ret = 0; 2140 } else { 2141 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2142 ret = 1; 2143 } 2144 mutex_exit(&sc->sc_lock); 2145 2146 return ret; 2147 } 2148 2149 static const struct filterops ugenread_intr_filtops = { 2150 .f_isfd = 1, 2151 .f_attach = NULL, 2152 .f_detach = filt_ugenrdetach, 2153 .f_event = filt_ugenread_intr, 2154 }; 2155 2156 static const struct filterops ugenread_isoc_filtops = { 2157 .f_isfd = 1, 2158 .f_attach = NULL, 2159 .f_detach = filt_ugenrdetach, 2160 .f_event = filt_ugenread_isoc, 2161 }; 2162 2163 static const struct filterops ugenread_bulk_filtops = { 2164 .f_isfd = 1, 2165 .f_attach = NULL, 2166 .f_detach = filt_ugenrdetach, 2167 .f_event = filt_ugenread_bulk, 2168 }; 2169 2170 static const struct filterops ugenwrite_bulk_filtops = { 2171 .f_isfd = 1, 2172 .f_attach = NULL, 2173 .f_detach = filt_ugenrdetach, 2174 .f_event = filt_ugenwrite_bulk, 2175 }; 2176 2177 static int 2178 ugenkqfilter(dev_t dev, struct knote *kn) 2179 { 2180 struct ugen_softc *sc; 2181 struct ugen_endpoint *sce; 2182 struct selinfo *sip; 2183 int error; 2184 2185 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2186 return ENXIO; 2187 2188 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2189 error = ENODEV; 2190 goto out; 2191 } 2192 2193 switch (kn->kn_filter) { 2194 case EVFILT_READ: 2195 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2196 if (sce == NULL) { 2197 error = EINVAL; 2198 goto out; 2199 } 2200 2201 sip = &sce->rsel; 2202 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2203 case UE_INTERRUPT: 2204 kn->kn_fop = &ugenread_intr_filtops; 2205 break; 2206 case UE_ISOCHRONOUS: 2207 kn->kn_fop = &ugenread_isoc_filtops; 2208 break; 2209 case UE_BULK: 2210 kn->kn_fop = &ugenread_bulk_filtops; 2211 break; 2212 default: 2213 error = EINVAL; 2214 goto out; 2215 } 2216 break; 2217 2218 case EVFILT_WRITE: 2219 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2220 if (sce == NULL) { 2221 error = EINVAL; 2222 goto out; 2223 } 2224 2225 sip = &sce->rsel; 2226 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2227 case UE_INTERRUPT: 2228 case UE_ISOCHRONOUS: 2229 /* XXX poll doesn't support this */ 2230 error = EINVAL; 2231 goto out; 2232 2233 case UE_BULK: 2234 kn->kn_fop = &ugenwrite_bulk_filtops; 2235 break; 2236 default: 2237 error = EINVAL; 2238 goto out; 2239 } 2240 break; 2241 2242 default: 2243 error = EINVAL; 2244 goto out; 2245 } 2246 2247 kn->kn_hook = sce; 2248 2249 mutex_enter(&sc->sc_lock); 2250 selrecord_knote(sip, kn); 2251 mutex_exit(&sc->sc_lock); 2252 2253 error = 0; 2254 2255 out: ugenif_release(sc); 2256 return error; 2257 } 2258 2259 MODULE(MODULE_CLASS_DRIVER, ugen, NULL); 2260 2261 static int 2262 ugen_modcmd(modcmd_t cmd, void *aux) 2263 { 2264 2265 switch (cmd) { 2266 case MODULE_CMD_INIT: 2267 mutex_init(&ugenif.lock, MUTEX_DEFAULT, IPL_NONE); 2268 rb_tree_init(&ugenif.tree, &ugenif_tree_ops); 2269 return 0; 2270 default: 2271 return ENOTTY; 2272 } 2273 } 2274
Indexes created Fri Sep 26 20:09:58 GMT 2025