ugen.c revision 1.156
1 /* $NetBSD: ugen.c,v 1.156 2020/08/16 06:17:31 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 1.156 2020/08/16 06:17:31 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 }; 143 144 static struct { 145 kmutex_t lock; 146 rb_tree_t tree; 147 } ugenif __cacheline_aligned; 148 149 static int 150 compare_ugen(void *cookie, const void *vsca, const void *vscb) 151 { 152 const struct ugen_softc *sca = vsca; 153 const struct ugen_softc *scb = vscb; 154 155 if (sca->sc_unit < scb->sc_unit) 156 return -1; 157 if (sca->sc_unit > scb->sc_unit) 158 return +1; 159 return 0; 160 } 161 162 static int 163 compare_ugen_key(void *cookie, const void *vsc, const void *vk) 164 { 165 const struct ugen_softc *sc = vsc; 166 const unsigned *k = vk; 167 168 if (sc->sc_unit < *k) 169 return -1; 170 if (sc->sc_unit > *k) 171 return +1; 172 return 0; 173 } 174 175 static const rb_tree_ops_t ugenif_tree_ops = { 176 .rbto_compare_nodes = compare_ugen, 177 .rbto_compare_key = compare_ugen_key, 178 .rbto_node_offset = offsetof(struct ugen_softc, sc_node), 179 }; 180 181 static void 182 ugenif_get_unit(struct ugen_softc *sc) 183 { 184 struct ugen_softc *sc0; 185 unsigned i; 186 187 mutex_enter(&ugenif.lock); 188 for (i = 0, sc0 = RB_TREE_MIN(&ugenif.tree); 189 sc0 != NULL && i == sc0->sc_unit; 190 i++, sc0 = RB_TREE_NEXT(&ugenif.tree, sc0)) 191 KASSERT(i < UINT_MAX); 192 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == NULL); 193 sc->sc_unit = i; 194 sc0 = rb_tree_insert_node(&ugenif.tree, sc); 195 KASSERT(sc0 == sc); 196 KASSERT(rb_tree_find_node(&ugenif.tree, &i) == sc); 197 mutex_exit(&ugenif.lock); 198 } 199 200 static void 201 ugenif_put_unit(struct ugen_softc *sc) 202 { 203 204 mutex_enter(&ugenif.lock); 205 KASSERT(rb_tree_find_node(&ugenif.tree, &sc->sc_unit) == sc); 206 rb_tree_remove_node(&ugenif.tree, sc); 207 sc->sc_unit = -1; 208 mutex_exit(&ugenif.lock); 209 } 210 211 static struct ugen_softc * 212 ugenif_acquire(unsigned unit) 213 { 214 struct ugen_softc *sc; 215 216 mutex_enter(&ugenif.lock); 217 sc = rb_tree_find_node(&ugenif.tree, &unit); 218 if (sc == NULL) 219 goto out; 220 mutex_enter(&sc->sc_lock); 221 if (sc->sc_dying) { 222 mutex_exit(&sc->sc_lock); 223 sc = NULL; 224 goto out; 225 } 226 KASSERT(sc->sc_refcnt < INT_MAX); 227 sc->sc_refcnt++; 228 mutex_exit(&sc->sc_lock); 229 out: mutex_exit(&ugenif.lock); 230 231 return sc; 232 } 233 234 static void 235 ugenif_release(struct ugen_softc *sc) 236 { 237 238 mutex_enter(&sc->sc_lock); 239 if (--sc->sc_refcnt < 0) 240 cv_broadcast(&sc->sc_detach_cv); 241 mutex_exit(&sc->sc_lock); 242 } 243 244 static dev_type_open(ugenopen); 245 static dev_type_close(ugenclose); 246 static dev_type_read(ugenread); 247 static dev_type_write(ugenwrite); 248 static dev_type_ioctl(ugenioctl); 249 static dev_type_poll(ugenpoll); 250 static dev_type_kqfilter(ugenkqfilter); 251 252 const struct cdevsw ugen_cdevsw = { 253 .d_open = ugenopen, 254 .d_close = ugenclose, 255 .d_read = ugenread, 256 .d_write = ugenwrite, 257 .d_ioctl = ugenioctl, 258 .d_stop = nostop, 259 .d_tty = notty, 260 .d_poll = ugenpoll, 261 .d_mmap = nommap, 262 .d_kqfilter = ugenkqfilter, 263 .d_discard = nodiscard, 264 .d_flag = D_OTHER, 265 }; 266 267 Static void ugenintr(struct usbd_xfer *, void *, 268 usbd_status); 269 Static void ugen_isoc_rintr(struct usbd_xfer *, void *, 270 usbd_status); 271 Static void ugen_bulkra_intr(struct usbd_xfer *, void *, 272 usbd_status); 273 Static void ugen_bulkwb_intr(struct usbd_xfer *, void *, 274 usbd_status); 275 Static int ugen_do_read(struct ugen_softc *, int, struct uio *, int); 276 Static int ugen_do_write(struct ugen_softc *, int, struct uio *, int); 277 Static int ugen_do_ioctl(struct ugen_softc *, int, u_long, 278 void *, int, struct lwp *); 279 Static int ugen_set_config(struct ugen_softc *, int, int); 280 Static usb_config_descriptor_t *ugen_get_cdesc(struct ugen_softc *, 281 int, int *); 282 Static usbd_status ugen_set_interface(struct ugen_softc *, int, int); 283 Static int ugen_get_alt_index(struct ugen_softc *, int); 284 Static void ugen_clear_endpoints(struct ugen_softc *); 285 286 #define UGENUNIT(n) ((minor(n) >> 4) & 0xf) 287 #define UGENENDPOINT(n) (minor(n) & 0xf) 288 #define UGENDEV(u, e) (makedev(0, ((u) << 4) | (e))) 289 290 static int ugenif_match(device_t, cfdata_t, void *); 291 static void ugenif_attach(device_t, device_t, void *); 292 static int ugen_match(device_t, cfdata_t, void *); 293 static void ugen_attach(device_t, device_t, void *); 294 static int ugen_detach(device_t, int); 295 static int ugen_activate(device_t, enum devact); 296 297 CFATTACH_DECL_NEW(ugen, sizeof(struct ugen_softc), ugen_match, 298 ugen_attach, ugen_detach, ugen_activate); 299 CFATTACH_DECL_NEW(ugenif, sizeof(struct ugen_softc), ugenif_match, 300 ugenif_attach, ugen_detach, ugen_activate); 301 302 /* toggle to control attach priority. -1 means "let autoconf decide" */ 303 int ugen_override = -1; 304 305 static int 306 ugen_match(device_t parent, cfdata_t match, void *aux) 307 { 308 struct usb_attach_arg *uaa = aux; 309 int override; 310 311 if (ugen_override != -1) 312 override = ugen_override; 313 else 314 override = match->cf_flags & 1; 315 316 if (override) 317 return UMATCH_HIGHEST; 318 else if (uaa->uaa_usegeneric) 319 return UMATCH_GENERIC; 320 else 321 return UMATCH_NONE; 322 } 323 324 static int 325 ugenif_match(device_t parent, cfdata_t match, void *aux) 326 { 327 /* Assume that they knew what they configured! (see ugenif(4)) */ 328 return UMATCH_HIGHEST; 329 } 330 331 static void 332 ugen_attach(device_t parent, device_t self, void *aux) 333 { 334 struct usb_attach_arg *uaa = aux; 335 struct usbif_attach_arg uiaa; 336 337 memset(&uiaa, 0, sizeof(uiaa)); 338 uiaa.uiaa_port = uaa->uaa_port; 339 uiaa.uiaa_vendor = uaa->uaa_vendor; 340 uiaa.uiaa_product = uaa->uaa_product; 341 uiaa.uiaa_release = uaa->uaa_release; 342 uiaa.uiaa_device = uaa->uaa_device; 343 uiaa.uiaa_configno = -1; 344 uiaa.uiaa_ifaceno = -1; 345 346 ugenif_attach(parent, self, &uiaa); 347 } 348 349 static void 350 ugenif_attach(device_t parent, device_t self, void *aux) 351 { 352 struct ugen_softc *sc = device_private(self); 353 struct usbif_attach_arg *uiaa = aux; 354 struct usbd_device *udev; 355 char *devinfop; 356 usbd_status err; 357 int i, dir, conf; 358 359 aprint_naive("\n"); 360 aprint_normal("\n"); 361 362 mutex_init(&sc->sc_lock, MUTEX_DEFAULT, IPL_SOFTUSB); 363 cv_init(&sc->sc_detach_cv, "ugendet"); 364 365 devinfop = usbd_devinfo_alloc(uiaa->uiaa_device, 0); 366 aprint_normal_dev(self, "%s\n", devinfop); 367 usbd_devinfo_free(devinfop); 368 369 sc->sc_dev = self; 370 sc->sc_udev = udev = uiaa->uiaa_device; 371 372 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 373 for (dir = OUT; dir <= IN; dir++) { 374 struct ugen_endpoint *sce; 375 376 sce = &sc->sc_endpoints[i][dir]; 377 selinit(&sce->rsel); 378 cv_init(&sce->cv, "ugensce"); 379 } 380 } 381 382 if (uiaa->uiaa_ifaceno < 0) { 383 /* 384 * If we attach the whole device, 385 * set configuration index 0, the default one. 386 */ 387 err = usbd_set_config_index(udev, 0, 0); 388 if (err) { 389 aprint_error_dev(self, 390 "setting configuration index 0 failed\n"); 391 sc->sc_dying = 1; 392 return; 393 } 394 } 395 396 /* Get current configuration */ 397 conf = usbd_get_config_descriptor(udev)->bConfigurationValue; 398 399 /* Set up all the local state for this configuration. */ 400 err = ugen_set_config(sc, conf, uiaa->uiaa_ifaceno < 0); 401 if (err) { 402 aprint_error_dev(self, "setting configuration %d failed\n", 403 conf); 404 sc->sc_dying = 1; 405 return; 406 } 407 408 ugenif_get_unit(sc); 409 usbd_add_drv_event(USB_EVENT_DRIVER_ATTACH, sc->sc_udev, sc->sc_dev); 410 411 if (!pmf_device_register(self, NULL, NULL)) 412 aprint_error_dev(self, "couldn't establish power handler\n"); 413 414 } 415 416 Static void 417 ugen_clear_endpoints(struct ugen_softc *sc) 418 { 419 420 /* Clear out the old info, but leave the selinfo and cv initialised. */ 421 for (int i = 0; i < USB_MAX_ENDPOINTS; i++) { 422 for (int dir = OUT; dir <= IN; dir++) { 423 struct ugen_endpoint *sce = &sc->sc_endpoints[i][dir]; 424 memset(sce, 0, UGEN_ENDPOINT_NONZERO_CRUFT); 425 } 426 } 427 } 428 429 Static int 430 ugen_set_config(struct ugen_softc *sc, int configno, int chkopen) 431 { 432 struct usbd_device *dev = sc->sc_udev; 433 usb_config_descriptor_t *cdesc; 434 struct usbd_interface *iface; 435 usb_endpoint_descriptor_t *ed; 436 struct ugen_endpoint *sce; 437 uint8_t niface, nendpt; 438 int ifaceno, endptno, endpt; 439 usbd_status err; 440 int dir; 441 442 DPRINTFN(1,("ugen_set_config: %s to configno %d, sc=%p\n", 443 device_xname(sc->sc_dev), configno, sc)); 444 445 if (chkopen) { 446 /* 447 * We start at 1, not 0, because we don't care whether the 448 * control endpoint is open or not. It is always present. 449 */ 450 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 451 if (sc->sc_is_open[endptno]) { 452 DPRINTFN(1, 453 ("ugen_set_config: %s - endpoint %d is open\n", 454 device_xname(sc->sc_dev), endptno)); 455 return USBD_IN_USE; 456 } 457 } 458 459 /* Avoid setting the current value. */ 460 cdesc = usbd_get_config_descriptor(dev); 461 if (!cdesc || cdesc->bConfigurationValue != configno) { 462 err = usbd_set_config_no(dev, configno, 1); 463 if (err) 464 return err; 465 } 466 467 ugen_clear_endpoints(sc); 468 469 err = usbd_interface_count(dev, &niface); 470 if (err) 471 return err; 472 473 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 474 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 475 err = usbd_device2interface_handle(dev, ifaceno, &iface); 476 if (err) 477 return err; 478 err = usbd_endpoint_count(iface, &nendpt); 479 if (err) 480 return err; 481 for (endptno = 0; endptno < nendpt; endptno++) { 482 ed = usbd_interface2endpoint_descriptor(iface,endptno); 483 KASSERT(ed != NULL); 484 endpt = ed->bEndpointAddress; 485 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 486 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 487 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 488 "(%d,%d), sce=%p\n", 489 endptno, endpt, UE_GET_ADDR(endpt), 490 UE_GET_DIR(endpt), sce)); 491 sce->sc = sc; 492 sce->edesc = ed; 493 sce->iface = iface; 494 } 495 } 496 return USBD_NORMAL_COMPLETION; 497 } 498 499 static int 500 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 501 { 502 struct ugen_softc *sc; 503 int unit = UGENUNIT(dev); 504 int endpt = UGENENDPOINT(dev); 505 usb_endpoint_descriptor_t *edesc; 506 struct ugen_endpoint *sce; 507 int dir, isize; 508 usbd_status err; 509 struct usbd_xfer *xfer; 510 int i, j; 511 int error; 512 513 if ((sc = ugenif_acquire(unit)) == NULL) 514 return ENXIO; 515 516 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 517 flag, mode, unit, endpt)); 518 519 /* The control endpoint allows multiple opens. */ 520 if (endpt == USB_CONTROL_ENDPOINT) { 521 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 522 error = 0; 523 goto out; 524 } 525 526 if (sc->sc_is_open[endpt]) { 527 error = EBUSY; 528 goto out; 529 } 530 531 /* Make sure there are pipes for all directions. */ 532 for (dir = OUT; dir <= IN; dir++) { 533 if (flag & (dir == OUT ? FWRITE : FREAD)) { 534 sce = &sc->sc_endpoints[endpt][dir]; 535 if (sce->edesc == NULL) { 536 error = ENXIO; 537 goto out; 538 } 539 } 540 } 541 542 /* Actually open the pipes. */ 543 /* XXX Should back out properly if it fails. */ 544 for (dir = OUT; dir <= IN; dir++) { 545 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 546 continue; 547 sce = &sc->sc_endpoints[endpt][dir]; 548 sce->state = 0; 549 sce->timeout = USBD_NO_TIMEOUT; 550 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 551 sc, endpt, dir, sce)); 552 edesc = sce->edesc; 553 switch (edesc->bmAttributes & UE_XFERTYPE) { 554 case UE_INTERRUPT: 555 if (dir == OUT) { 556 err = usbd_open_pipe(sce->iface, 557 edesc->bEndpointAddress, 0, &sce->pipeh); 558 if (err) { 559 error = EIO; 560 goto out; 561 } 562 break; 563 } 564 isize = UGETW(edesc->wMaxPacketSize); 565 if (isize == 0) { /* shouldn't happen */ 566 error = EINVAL; 567 goto out; 568 } 569 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 570 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 571 endpt, isize)); 572 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 573 kmem_free(sce->ibuf, isize); 574 sce->ibuf = NULL; 575 error = ENOMEM; 576 goto out; 577 } 578 err = usbd_open_pipe_intr(sce->iface, 579 edesc->bEndpointAddress, 580 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 581 sce->ibuf, isize, ugenintr, 582 USBD_DEFAULT_INTERVAL); 583 if (err) { 584 clfree(&sce->q); 585 kmem_free(sce->ibuf, isize); 586 sce->ibuf = NULL; 587 error = EIO; 588 goto out; 589 } 590 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 591 break; 592 case UE_BULK: 593 err = usbd_open_pipe(sce->iface, 594 edesc->bEndpointAddress, 0, &sce->pipeh); 595 if (err) { 596 error = EIO; 597 goto out; 598 } 599 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 600 /* 601 * Use request size for non-RA/WB transfers 602 * as the default. 603 */ 604 sce->ra_wb_reqsize = UGEN_BBSIZE; 605 break; 606 case UE_ISOCHRONOUS: 607 if (dir == OUT) { 608 error = EINVAL; 609 goto out; 610 } 611 isize = UGETW(edesc->wMaxPacketSize); 612 if (isize == 0) { /* shouldn't happen */ 613 error = EINVAL; 614 goto out; 615 } 616 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 617 KM_SLEEP); 618 sce->cur = sce->fill = sce->ibuf; 619 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 620 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 621 endpt, isize)); 622 err = usbd_open_pipe(sce->iface, 623 edesc->bEndpointAddress, 0, &sce->pipeh); 624 if (err) { 625 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 626 sce->ibuf = NULL; 627 error = EIO; 628 goto out; 629 } 630 for (i = 0; i < UGEN_NISOREQS; ++i) { 631 sce->isoreqs[i].sce = sce; 632 err = usbd_create_xfer(sce->pipeh, 633 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 634 &xfer); 635 if (err) 636 goto bad; 637 sce->isoreqs[i].xfer = xfer; 638 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 639 for (j = 0; j < UGEN_NISORFRMS; ++j) 640 sce->isoreqs[i].sizes[j] = isize; 641 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 642 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 643 ugen_isoc_rintr); 644 (void)usbd_transfer(xfer); 645 } 646 DPRINTFN(5, ("ugenopen: isoc open done\n")); 647 break; 648 bad: 649 while (--i >= 0) /* implicit buffer free */ 650 usbd_destroy_xfer(sce->isoreqs[i].xfer); 651 usbd_close_pipe(sce->pipeh); 652 sce->pipeh = NULL; 653 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 654 sce->ibuf = NULL; 655 error = ENOMEM; 656 goto out; 657 case UE_CONTROL: 658 sce->timeout = USBD_DEFAULT_TIMEOUT; 659 error = EINVAL; 660 goto out; 661 } 662 } 663 sc->sc_is_open[endpt] = 1; 664 error = 0; 665 out: ugenif_release(sc); 666 return error; 667 } 668 669 static int 670 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 671 { 672 int endpt = UGENENDPOINT(dev); 673 struct ugen_softc *sc; 674 struct ugen_endpoint *sce; 675 int dir; 676 int i; 677 int error; 678 679 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 680 return ENXIO; 681 682 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 683 flag, mode, UGENUNIT(dev), endpt)); 684 685 KASSERT(sc->sc_is_open[endpt]); 686 687 if (endpt == USB_CONTROL_ENDPOINT) { 688 DPRINTFN(5, ("ugenclose: close control\n")); 689 sc->sc_is_open[endpt] = 0; 690 error = 0; 691 goto out; 692 } 693 694 for (dir = OUT; dir <= IN; dir++) { 695 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 696 continue; 697 sce = &sc->sc_endpoints[endpt][dir]; 698 if (sce->pipeh == NULL) 699 continue; 700 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 701 endpt, dir, sce)); 702 703 usbd_abort_pipe(sce->pipeh); 704 705 int isize = UGETW(sce->edesc->wMaxPacketSize); 706 int msize = 0; 707 708 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 709 case UE_INTERRUPT: 710 ndflush(&sce->q, sce->q.c_cc); 711 clfree(&sce->q); 712 msize = isize; 713 break; 714 case UE_ISOCHRONOUS: 715 for (i = 0; i < UGEN_NISOREQS; ++i) 716 usbd_destroy_xfer(sce->isoreqs[i].xfer); 717 msize = isize * UGEN_NISOFRAMES; 718 break; 719 case UE_BULK: 720 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 721 usbd_destroy_xfer(sce->ra_wb_xfer); 722 msize = sce->ra_wb_bufsize; 723 } 724 break; 725 default: 726 break; 727 } 728 usbd_close_pipe(sce->pipeh); 729 sce->pipeh = NULL; 730 if (sce->ibuf != NULL) { 731 kmem_free(sce->ibuf, msize); 732 sce->ibuf = NULL; 733 } 734 } 735 sc->sc_is_open[endpt] = 0; 736 error = 0; 737 738 out: ugenif_release(sc); 739 return error; 740 } 741 742 Static int 743 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 744 { 745 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 746 uint32_t n, tn; 747 struct usbd_xfer *xfer; 748 usbd_status err; 749 int error = 0; 750 751 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 752 753 if (endpt == USB_CONTROL_ENDPOINT) 754 return ENODEV; 755 756 KASSERT(sce->edesc); 757 KASSERT(sce->pipeh); 758 759 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 760 case UE_INTERRUPT: 761 /* Block until activity occurred. */ 762 mutex_enter(&sc->sc_lock); 763 while (sce->q.c_cc == 0) { 764 if (flag & IO_NDELAY) { 765 mutex_exit(&sc->sc_lock); 766 return EWOULDBLOCK; 767 } 768 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 769 /* "ugenri" */ 770 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 771 mstohz(sce->timeout)); 772 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 773 if (sc->sc_dying) 774 error = EIO; 775 if (error) 776 break; 777 } 778 mutex_exit(&sc->sc_lock); 779 780 /* Transfer as many chunks as possible. */ 781 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 782 n = uimin(sce->q.c_cc, uio->uio_resid); 783 if (n > sizeof(sc->sc_buffer)) 784 n = sizeof(sc->sc_buffer); 785 786 /* Remove a small chunk from the input queue. */ 787 q_to_b(&sce->q, sc->sc_buffer, n); 788 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 789 790 /* Copy the data to the user process. */ 791 error = uiomove(sc->sc_buffer, n, uio); 792 if (error) 793 break; 794 } 795 break; 796 case UE_BULK: 797 if (sce->state & UGEN_BULK_RA) { 798 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 799 uio->uio_resid, sce->ra_wb_used)); 800 xfer = sce->ra_wb_xfer; 801 802 mutex_enter(&sc->sc_lock); 803 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 804 mutex_exit(&sc->sc_lock); 805 return EWOULDBLOCK; 806 } 807 while (uio->uio_resid > 0 && !error) { 808 while (sce->ra_wb_used == 0) { 809 DPRINTFN(5, 810 ("ugenread: sleep on %p\n", 811 sce)); 812 /* "ugenrb" */ 813 error = cv_timedwait_sig(&sce->cv, 814 &sc->sc_lock, mstohz(sce->timeout)); 815 DPRINTFN(5, 816 ("ugenread: woke, error=%d\n", 817 error)); 818 if (sc->sc_dying) 819 error = EIO; 820 if (error) 821 break; 822 } 823 824 /* Copy data to the process. */ 825 while (uio->uio_resid > 0 826 && sce->ra_wb_used > 0) { 827 n = uimin(uio->uio_resid, 828 sce->ra_wb_used); 829 n = uimin(n, sce->limit - sce->cur); 830 error = uiomove(sce->cur, n, uio); 831 if (error) 832 break; 833 sce->cur += n; 834 sce->ra_wb_used -= n; 835 if (sce->cur == sce->limit) 836 sce->cur = sce->ibuf; 837 } 838 839 /* 840 * If the transfers stopped because the 841 * buffer was full, restart them. 842 */ 843 if (sce->state & UGEN_RA_WB_STOP && 844 sce->ra_wb_used < sce->limit - sce->ibuf) { 845 n = (sce->limit - sce->ibuf) 846 - sce->ra_wb_used; 847 usbd_setup_xfer(xfer, sce, NULL, 848 uimin(n, sce->ra_wb_xferlen), 849 0, USBD_NO_TIMEOUT, 850 ugen_bulkra_intr); 851 sce->state &= ~UGEN_RA_WB_STOP; 852 err = usbd_transfer(xfer); 853 if (err != USBD_IN_PROGRESS) 854 /* 855 * The transfer has not been 856 * queued. Setting STOP 857 * will make us try 858 * again at the next read. 859 */ 860 sce->state |= UGEN_RA_WB_STOP; 861 } 862 } 863 mutex_exit(&sc->sc_lock); 864 break; 865 } 866 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 867 0, 0, &xfer); 868 if (error) 869 return error; 870 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 871 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 872 tn = n; 873 err = usbd_bulk_transfer(xfer, sce->pipeh, 874 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 875 sce->timeout, sc->sc_buffer, &tn); 876 if (err) { 877 if (err == USBD_INTERRUPTED) 878 error = EINTR; 879 else if (err == USBD_TIMEOUT) 880 error = ETIMEDOUT; 881 else 882 error = EIO; 883 break; 884 } 885 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 886 error = uiomove(sc->sc_buffer, tn, uio); 887 if (error || tn < n) 888 break; 889 } 890 usbd_destroy_xfer(xfer); 891 break; 892 case UE_ISOCHRONOUS: 893 mutex_enter(&sc->sc_lock); 894 while (sce->cur == sce->fill) { 895 if (flag & IO_NDELAY) { 896 mutex_exit(&sc->sc_lock); 897 return EWOULDBLOCK; 898 } 899 /* "ugenri" */ 900 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 901 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 902 mstohz(sce->timeout)); 903 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 904 if (sc->sc_dying) 905 error = EIO; 906 if (error) 907 break; 908 } 909 910 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 911 if(sce->fill > sce->cur) 912 n = uimin(sce->fill - sce->cur, uio->uio_resid); 913 else 914 n = uimin(sce->limit - sce->cur, uio->uio_resid); 915 916 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 917 918 /* Copy the data to the user process. */ 919 error = uiomove(sce->cur, n, uio); 920 if (error) 921 break; 922 sce->cur += n; 923 if (sce->cur >= sce->limit) 924 sce->cur = sce->ibuf; 925 } 926 mutex_exit(&sc->sc_lock); 927 break; 928 929 930 default: 931 return ENXIO; 932 } 933 return error; 934 } 935 936 static int 937 ugenread(dev_t dev, struct uio *uio, int flag) 938 { 939 int endpt = UGENENDPOINT(dev); 940 struct ugen_softc *sc; 941 int error; 942 943 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 944 return ENXIO; 945 error = ugen_do_read(sc, endpt, uio, flag); 946 ugenif_release(sc); 947 948 return error; 949 } 950 951 Static int 952 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 953 int flag) 954 { 955 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 956 uint32_t n; 957 int error = 0; 958 uint32_t tn; 959 char *dbuf; 960 struct usbd_xfer *xfer; 961 usbd_status err; 962 963 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 964 965 if (endpt == USB_CONTROL_ENDPOINT) 966 return ENODEV; 967 968 KASSERT(sce->edesc); 969 KASSERT(sce->pipeh); 970 971 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 972 case UE_BULK: 973 if (sce->state & UGEN_BULK_WB) { 974 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 975 uio->uio_resid, sce->ra_wb_used)); 976 xfer = sce->ra_wb_xfer; 977 978 mutex_enter(&sc->sc_lock); 979 if (sce->ra_wb_used == sce->limit - sce->ibuf && 980 flag & IO_NDELAY) { 981 mutex_exit(&sc->sc_lock); 982 return EWOULDBLOCK; 983 } 984 while (uio->uio_resid > 0 && !error) { 985 while (sce->ra_wb_used == 986 sce->limit - sce->ibuf) { 987 DPRINTFN(5, 988 ("ugenwrite: sleep on %p\n", 989 sce)); 990 /* "ugenwb" */ 991 error = cv_timedwait_sig(&sce->cv, 992 &sc->sc_lock, mstohz(sce->timeout)); 993 DPRINTFN(5, 994 ("ugenwrite: woke, error=%d\n", 995 error)); 996 if (sc->sc_dying) 997 error = EIO; 998 if (error) 999 break; 1000 } 1001 1002 /* Copy data from the process. */ 1003 while (uio->uio_resid > 0 && 1004 sce->ra_wb_used < sce->limit - sce->ibuf) { 1005 n = uimin(uio->uio_resid, 1006 (sce->limit - sce->ibuf) 1007 - sce->ra_wb_used); 1008 n = uimin(n, sce->limit - sce->fill); 1009 error = uiomove(sce->fill, n, uio); 1010 if (error) 1011 break; 1012 sce->fill += n; 1013 sce->ra_wb_used += n; 1014 if (sce->fill == sce->limit) 1015 sce->fill = sce->ibuf; 1016 } 1017 1018 /* 1019 * If the transfers stopped because the 1020 * buffer was empty, restart them. 1021 */ 1022 if (sce->state & UGEN_RA_WB_STOP && 1023 sce->ra_wb_used > 0) { 1024 dbuf = (char *)usbd_get_buffer(xfer); 1025 n = uimin(sce->ra_wb_used, 1026 sce->ra_wb_xferlen); 1027 tn = uimin(n, sce->limit - sce->cur); 1028 memcpy(dbuf, sce->cur, tn); 1029 dbuf += tn; 1030 if (n - tn > 0) 1031 memcpy(dbuf, sce->ibuf, 1032 n - tn); 1033 usbd_setup_xfer(xfer, sce, NULL, n, 1034 0, USBD_NO_TIMEOUT, 1035 ugen_bulkwb_intr); 1036 sce->state &= ~UGEN_RA_WB_STOP; 1037 err = usbd_transfer(xfer); 1038 if (err != USBD_IN_PROGRESS) 1039 /* 1040 * The transfer has not been 1041 * queued. Setting STOP 1042 * will make us try again 1043 * at the next read. 1044 */ 1045 sce->state |= UGEN_RA_WB_STOP; 1046 } 1047 } 1048 mutex_exit(&sc->sc_lock); 1049 break; 1050 } 1051 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 1052 0, 0, &xfer); 1053 if (error) 1054 return error; 1055 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 1056 error = uiomove(sc->sc_buffer, n, uio); 1057 if (error) 1058 break; 1059 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1060 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 1061 sc->sc_buffer, &n); 1062 if (err) { 1063 if (err == USBD_INTERRUPTED) 1064 error = EINTR; 1065 else if (err == USBD_TIMEOUT) 1066 error = ETIMEDOUT; 1067 else 1068 error = EIO; 1069 break; 1070 } 1071 } 1072 usbd_destroy_xfer(xfer); 1073 break; 1074 case UE_INTERRUPT: 1075 error = usbd_create_xfer(sce->pipeh, 1076 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 1077 if (error) 1078 return error; 1079 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 1080 uio->uio_resid)) != 0) { 1081 error = uiomove(sc->sc_buffer, n, uio); 1082 if (error) 1083 break; 1084 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1085 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 1086 sce->timeout, sc->sc_buffer, &n); 1087 if (err) { 1088 if (err == USBD_INTERRUPTED) 1089 error = EINTR; 1090 else if (err == USBD_TIMEOUT) 1091 error = ETIMEDOUT; 1092 else 1093 error = EIO; 1094 break; 1095 } 1096 } 1097 usbd_destroy_xfer(xfer); 1098 break; 1099 default: 1100 return ENXIO; 1101 } 1102 return error; 1103 } 1104 1105 static int 1106 ugenwrite(dev_t dev, struct uio *uio, int flag) 1107 { 1108 int endpt = UGENENDPOINT(dev); 1109 struct ugen_softc *sc; 1110 int error; 1111 1112 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1113 return ENXIO; 1114 error = ugen_do_write(sc, endpt, uio, flag); 1115 ugenif_release(sc); 1116 1117 return error; 1118 } 1119 1120 static int 1121 ugen_activate(device_t self, enum devact act) 1122 { 1123 struct ugen_softc *sc = device_private(self); 1124 1125 switch (act) { 1126 case DVACT_DEACTIVATE: 1127 sc->sc_dying = 1; 1128 return 0; 1129 default: 1130 return EOPNOTSUPP; 1131 } 1132 } 1133 1134 static int 1135 ugen_detach(device_t self, int flags) 1136 { 1137 struct ugen_softc *sc = device_private(self); 1138 struct ugen_endpoint *sce; 1139 int i, dir; 1140 int maj, mn; 1141 1142 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1143 1144 sc->sc_dying = 1; 1145 pmf_device_deregister(self); 1146 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1147 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1148 for (dir = OUT; dir <= IN; dir++) { 1149 sce = &sc->sc_endpoints[i][dir]; 1150 if (sce->pipeh) 1151 usbd_abort_pipe(sce->pipeh); 1152 } 1153 } 1154 1155 mutex_enter(&sc->sc_lock); 1156 if (--sc->sc_refcnt >= 0) { 1157 /* Wake everyone */ 1158 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1159 cv_signal(&sc->sc_endpoints[i][IN].cv); 1160 /* Wait for processes to go away. */ 1161 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1162 aprint_error_dev(self, ": didn't detach\n"); 1163 } 1164 mutex_exit(&sc->sc_lock); 1165 1166 /* locate the major number */ 1167 maj = cdevsw_lookup_major(&ugen_cdevsw); 1168 1169 /* Nuke the vnodes for any open instances (calls close). */ 1170 mn = sc->sc_unit * USB_MAX_ENDPOINTS; 1171 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1172 1173 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1174 ugenif_put_unit(sc); 1175 1176 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1177 for (dir = OUT; dir <= IN; dir++) { 1178 sce = &sc->sc_endpoints[i][dir]; 1179 seldestroy(&sce->rsel); 1180 cv_destroy(&sce->cv); 1181 } 1182 } 1183 1184 cv_destroy(&sc->sc_detach_cv); 1185 mutex_destroy(&sc->sc_lock); 1186 1187 return 0; 1188 } 1189 1190 Static void 1191 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1192 { 1193 struct ugen_endpoint *sce = addr; 1194 struct ugen_softc *sc = sce->sc; 1195 uint32_t count; 1196 u_char *ibuf; 1197 1198 if (status == USBD_CANCELLED) 1199 return; 1200 1201 if (status != USBD_NORMAL_COMPLETION) { 1202 DPRINTF(("ugenintr: status=%d\n", status)); 1203 if (status == USBD_STALLED) 1204 usbd_clear_endpoint_stall_async(sce->pipeh); 1205 return; 1206 } 1207 1208 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1209 ibuf = sce->ibuf; 1210 1211 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1212 xfer, status, count)); 1213 DPRINTFN(5, (" data = %02x %02x %02x\n", 1214 ibuf[0], ibuf[1], ibuf[2])); 1215 1216 mutex_enter(&sc->sc_lock); 1217 (void)b_to_q(ibuf, count, &sce->q); 1218 cv_signal(&sce->cv); 1219 mutex_exit(&sc->sc_lock); 1220 selnotify(&sce->rsel, 0, 0); 1221 } 1222 1223 Static void 1224 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1225 usbd_status status) 1226 { 1227 struct isoreq *req = addr; 1228 struct ugen_endpoint *sce = req->sce; 1229 struct ugen_softc *sc = sce->sc; 1230 uint32_t count, n; 1231 int i, isize; 1232 1233 /* Return if we are aborting. */ 1234 if (status == USBD_CANCELLED) 1235 return; 1236 1237 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1238 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1239 (long)(req - sce->isoreqs), count)); 1240 1241 mutex_enter(&sc->sc_lock); 1242 1243 /* throw away oldest input if the buffer is full */ 1244 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1245 sce->cur += count; 1246 if (sce->cur >= sce->limit) 1247 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1248 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1249 count)); 1250 } 1251 1252 isize = UGETW(sce->edesc->wMaxPacketSize); 1253 for (i = 0; i < UGEN_NISORFRMS; i++) { 1254 uint32_t actlen = req->sizes[i]; 1255 char const *tbuf = (char const *)req->dmabuf + isize * i; 1256 1257 /* copy data to buffer */ 1258 while (actlen > 0) { 1259 n = uimin(actlen, sce->limit - sce->fill); 1260 memcpy(sce->fill, tbuf, n); 1261 1262 tbuf += n; 1263 actlen -= n; 1264 sce->fill += n; 1265 if (sce->fill == sce->limit) 1266 sce->fill = sce->ibuf; 1267 } 1268 1269 /* setup size for next transfer */ 1270 req->sizes[i] = isize; 1271 } 1272 1273 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1274 ugen_isoc_rintr); 1275 (void)usbd_transfer(xfer); 1276 1277 cv_signal(&sce->cv); 1278 mutex_exit(&sc->sc_lock); 1279 selnotify(&sce->rsel, 0, 0); 1280 } 1281 1282 Static void 1283 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1284 usbd_status status) 1285 { 1286 struct ugen_endpoint *sce = addr; 1287 struct ugen_softc *sc = sce->sc; 1288 uint32_t count, n; 1289 char const *tbuf; 1290 usbd_status err; 1291 1292 /* Return if we are aborting. */ 1293 if (status == USBD_CANCELLED) 1294 return; 1295 1296 if (status != USBD_NORMAL_COMPLETION) { 1297 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1298 sce->state |= UGEN_RA_WB_STOP; 1299 if (status == USBD_STALLED) 1300 usbd_clear_endpoint_stall_async(sce->pipeh); 1301 return; 1302 } 1303 1304 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1305 1306 mutex_enter(&sc->sc_lock); 1307 1308 /* Keep track of how much is in the buffer. */ 1309 sce->ra_wb_used += count; 1310 1311 /* Copy data to buffer. */ 1312 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1313 n = uimin(count, sce->limit - sce->fill); 1314 memcpy(sce->fill, tbuf, n); 1315 tbuf += n; 1316 count -= n; 1317 sce->fill += n; 1318 if (sce->fill == sce->limit) 1319 sce->fill = sce->ibuf; 1320 if (count > 0) { 1321 memcpy(sce->fill, tbuf, count); 1322 sce->fill += count; 1323 } 1324 1325 /* Set up the next request if necessary. */ 1326 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1327 if (n > 0) { 1328 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1329 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1330 err = usbd_transfer(xfer); 1331 if (err != USBD_IN_PROGRESS) { 1332 printf("usbd_bulkra_intr: error=%d\n", err); 1333 /* 1334 * The transfer has not been queued. Setting STOP 1335 * will make us try again at the next read. 1336 */ 1337 sce->state |= UGEN_RA_WB_STOP; 1338 } 1339 } 1340 else 1341 sce->state |= UGEN_RA_WB_STOP; 1342 1343 cv_signal(&sce->cv); 1344 mutex_exit(&sc->sc_lock); 1345 selnotify(&sce->rsel, 0, 0); 1346 } 1347 1348 Static void 1349 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1350 usbd_status status) 1351 { 1352 struct ugen_endpoint *sce = addr; 1353 struct ugen_softc *sc = sce->sc; 1354 uint32_t count, n; 1355 char *tbuf; 1356 usbd_status err; 1357 1358 /* Return if we are aborting. */ 1359 if (status == USBD_CANCELLED) 1360 return; 1361 1362 if (status != USBD_NORMAL_COMPLETION) { 1363 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1364 sce->state |= UGEN_RA_WB_STOP; 1365 if (status == USBD_STALLED) 1366 usbd_clear_endpoint_stall_async(sce->pipeh); 1367 return; 1368 } 1369 1370 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1371 1372 mutex_enter(&sc->sc_lock); 1373 1374 /* Keep track of how much is in the buffer. */ 1375 sce->ra_wb_used -= count; 1376 1377 /* Update buffer pointers. */ 1378 sce->cur += count; 1379 if (sce->cur >= sce->limit) 1380 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1381 1382 /* Set up next request if necessary. */ 1383 if (sce->ra_wb_used > 0) { 1384 /* copy data from buffer */ 1385 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1386 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1387 n = uimin(count, sce->limit - sce->cur); 1388 memcpy(tbuf, sce->cur, n); 1389 tbuf += n; 1390 if (count - n > 0) 1391 memcpy(tbuf, sce->ibuf, count - n); 1392 1393 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1394 ugen_bulkwb_intr); 1395 err = usbd_transfer(xfer); 1396 if (err != USBD_IN_PROGRESS) { 1397 printf("usbd_bulkwb_intr: error=%d\n", err); 1398 /* 1399 * The transfer has not been queued. Setting STOP 1400 * will make us try again at the next write. 1401 */ 1402 sce->state |= UGEN_RA_WB_STOP; 1403 } 1404 } 1405 else 1406 sce->state |= UGEN_RA_WB_STOP; 1407 1408 cv_signal(&sce->cv); 1409 mutex_exit(&sc->sc_lock); 1410 selnotify(&sce->rsel, 0, 0); 1411 } 1412 1413 Static usbd_status 1414 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1415 { 1416 struct usbd_interface *iface; 1417 usb_endpoint_descriptor_t *ed; 1418 usbd_status err; 1419 struct ugen_endpoint *sce; 1420 uint8_t niface, nendpt, endptno, endpt; 1421 int dir; 1422 1423 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1424 1425 err = usbd_interface_count(sc->sc_udev, &niface); 1426 if (err) 1427 return err; 1428 if (ifaceidx < 0 || ifaceidx >= niface) 1429 return USBD_INVAL; 1430 1431 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1432 if (err) 1433 return err; 1434 err = usbd_endpoint_count(iface, &nendpt); 1435 if (err) 1436 return err; 1437 1438 /* change setting */ 1439 err = usbd_set_interface(iface, altno); 1440 if (err) 1441 return err; 1442 1443 err = usbd_endpoint_count(iface, &nendpt); 1444 if (err) 1445 return err; 1446 1447 ugen_clear_endpoints(sc); 1448 1449 for (endptno = 0; endptno < nendpt; endptno++) { 1450 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1451 KASSERT(ed != NULL); 1452 endpt = ed->bEndpointAddress; 1453 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1454 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1455 sce->sc = sc; 1456 sce->edesc = ed; 1457 sce->iface = iface; 1458 } 1459 return 0; 1460 } 1461 1462 /* Retrieve a complete descriptor for a certain device and index. */ 1463 Static usb_config_descriptor_t * 1464 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1465 { 1466 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1467 int len; 1468 usbd_status err; 1469 1470 if (index == USB_CURRENT_CONFIG_INDEX) { 1471 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1472 if (tdesc == NULL) 1473 return NULL; 1474 len = UGETW(tdesc->wTotalLength); 1475 if (lenp) 1476 *lenp = len; 1477 cdesc = kmem_alloc(len, KM_SLEEP); 1478 memcpy(cdesc, tdesc, len); 1479 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1480 } else { 1481 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1482 if (err) 1483 return 0; 1484 len = UGETW(cdescr.wTotalLength); 1485 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1486 if (lenp) 1487 *lenp = len; 1488 cdesc = kmem_alloc(len, KM_SLEEP); 1489 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1490 if (err) { 1491 kmem_free(cdesc, len); 1492 return 0; 1493 } 1494 } 1495 return cdesc; 1496 } 1497 1498 Static int 1499 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1500 { 1501 struct usbd_interface *iface; 1502 usbd_status err; 1503 1504 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1505 if (err) 1506 return -1; 1507 return usbd_get_interface_altindex(iface); 1508 } 1509 1510 Static int 1511 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1512 void *addr, int flag, struct lwp *l) 1513 { 1514 struct ugen_endpoint *sce; 1515 usbd_status err; 1516 struct usbd_interface *iface; 1517 struct usb_config_desc *cd; 1518 usb_config_descriptor_t *cdesc; 1519 struct usb_interface_desc *id; 1520 usb_interface_descriptor_t *idesc; 1521 struct usb_endpoint_desc *ed; 1522 usb_endpoint_descriptor_t *edesc; 1523 struct usb_alt_interface *ai; 1524 struct usb_string_desc *si; 1525 uint8_t conf, alt; 1526 int cdesclen; 1527 int error; 1528 int dir; 1529 1530 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1531 1532 switch (cmd) { 1533 case FIONBIO: 1534 /* All handled in the upper FS layer. */ 1535 return 0; 1536 case USB_SET_SHORT_XFER: 1537 if (endpt == USB_CONTROL_ENDPOINT) 1538 return EINVAL; 1539 /* This flag only affects read */ 1540 sce = &sc->sc_endpoints[endpt][IN]; 1541 if (sce == NULL || sce->pipeh == NULL) 1542 return EINVAL; 1543 if (*(int *)addr) 1544 sce->state |= UGEN_SHORT_OK; 1545 else 1546 sce->state &= ~UGEN_SHORT_OK; 1547 return 0; 1548 case USB_SET_TIMEOUT: 1549 for (dir = OUT; dir <= IN; dir++) { 1550 sce = &sc->sc_endpoints[endpt][dir]; 1551 if (sce == NULL) 1552 return EINVAL; 1553 1554 sce->timeout = *(int *)addr; 1555 } 1556 return 0; 1557 case USB_SET_BULK_RA: 1558 if (endpt == USB_CONTROL_ENDPOINT) 1559 return EINVAL; 1560 sce = &sc->sc_endpoints[endpt][IN]; 1561 if (sce == NULL || sce->pipeh == NULL) 1562 return EINVAL; 1563 edesc = sce->edesc; 1564 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1565 return EINVAL; 1566 1567 if (*(int *)addr) { 1568 /* Only turn RA on if it's currently off. */ 1569 if (sce->state & UGEN_BULK_RA) 1570 return 0; 1571 1572 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1573 /* shouldn't happen */ 1574 return EINVAL; 1575 error = usbd_create_xfer(sce->pipeh, 1576 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1577 if (error) 1578 return error; 1579 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1580 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1581 sce->fill = sce->cur = sce->ibuf; 1582 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1583 sce->ra_wb_used = 0; 1584 sce->state |= UGEN_BULK_RA; 1585 sce->state &= ~UGEN_RA_WB_STOP; 1586 /* Now start reading. */ 1587 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1588 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1589 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1590 err = usbd_transfer(sce->ra_wb_xfer); 1591 if (err != USBD_IN_PROGRESS) { 1592 sce->state &= ~UGEN_BULK_RA; 1593 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1594 sce->ibuf = NULL; 1595 usbd_destroy_xfer(sce->ra_wb_xfer); 1596 return EIO; 1597 } 1598 } else { 1599 /* Only turn RA off if it's currently on. */ 1600 if (!(sce->state & UGEN_BULK_RA)) 1601 return 0; 1602 1603 sce->state &= ~UGEN_BULK_RA; 1604 usbd_abort_pipe(sce->pipeh); 1605 usbd_destroy_xfer(sce->ra_wb_xfer); 1606 /* 1607 * XXX Discard whatever's in the buffer, but we 1608 * should keep it around and drain the buffer 1609 * instead. 1610 */ 1611 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1612 sce->ibuf = NULL; 1613 } 1614 return 0; 1615 case USB_SET_BULK_WB: 1616 if (endpt == USB_CONTROL_ENDPOINT) 1617 return EINVAL; 1618 sce = &sc->sc_endpoints[endpt][OUT]; 1619 if (sce == NULL || sce->pipeh == NULL) 1620 return EINVAL; 1621 edesc = sce->edesc; 1622 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1623 return EINVAL; 1624 1625 if (*(int *)addr) { 1626 /* Only turn WB on if it's currently off. */ 1627 if (sce->state & UGEN_BULK_WB) 1628 return 0; 1629 1630 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1631 /* shouldn't happen */ 1632 return EINVAL; 1633 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1634 0, 0, &sce->ra_wb_xfer); 1635 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1636 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1637 sce->fill = sce->cur = sce->ibuf; 1638 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1639 sce->ra_wb_used = 0; 1640 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1641 } else { 1642 /* Only turn WB off if it's currently on. */ 1643 if (!(sce->state & UGEN_BULK_WB)) 1644 return 0; 1645 1646 sce->state &= ~UGEN_BULK_WB; 1647 /* 1648 * XXX Discard whatever's in the buffer, but we 1649 * should keep it around and keep writing to 1650 * drain the buffer instead. 1651 */ 1652 usbd_abort_pipe(sce->pipeh); 1653 usbd_destroy_xfer(sce->ra_wb_xfer); 1654 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1655 sce->ibuf = NULL; 1656 } 1657 return 0; 1658 case USB_SET_BULK_RA_OPT: 1659 case USB_SET_BULK_WB_OPT: 1660 { 1661 struct usb_bulk_ra_wb_opt *opt; 1662 1663 if (endpt == USB_CONTROL_ENDPOINT) 1664 return EINVAL; 1665 opt = (struct usb_bulk_ra_wb_opt *)addr; 1666 if (cmd == USB_SET_BULK_RA_OPT) 1667 sce = &sc->sc_endpoints[endpt][IN]; 1668 else 1669 sce = &sc->sc_endpoints[endpt][OUT]; 1670 if (sce == NULL || sce->pipeh == NULL) 1671 return EINVAL; 1672 if (opt->ra_wb_buffer_size < 1 || 1673 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1674 opt->ra_wb_request_size < 1 || 1675 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1676 return EINVAL; 1677 /* 1678 * XXX These changes do not take effect until the 1679 * next time RA/WB mode is enabled but they ought to 1680 * take effect immediately. 1681 */ 1682 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1683 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1684 return 0; 1685 } 1686 default: 1687 break; 1688 } 1689 1690 if (endpt != USB_CONTROL_ENDPOINT) 1691 return EINVAL; 1692 1693 switch (cmd) { 1694 #ifdef UGEN_DEBUG 1695 case USB_SETDEBUG: 1696 ugendebug = *(int *)addr; 1697 break; 1698 #endif 1699 case USB_GET_CONFIG: 1700 err = usbd_get_config(sc->sc_udev, &conf); 1701 if (err) 1702 return EIO; 1703 *(int *)addr = conf; 1704 break; 1705 case USB_SET_CONFIG: 1706 if (!(flag & FWRITE)) 1707 return EPERM; 1708 err = ugen_set_config(sc, *(int *)addr, 1); 1709 switch (err) { 1710 case USBD_NORMAL_COMPLETION: 1711 break; 1712 case USBD_IN_USE: 1713 return EBUSY; 1714 default: 1715 return EIO; 1716 } 1717 break; 1718 case USB_GET_ALTINTERFACE: 1719 ai = (struct usb_alt_interface *)addr; 1720 err = usbd_device2interface_handle(sc->sc_udev, 1721 ai->uai_interface_index, &iface); 1722 if (err) 1723 return EINVAL; 1724 idesc = usbd_get_interface_descriptor(iface); 1725 if (idesc == NULL) 1726 return EIO; 1727 ai->uai_alt_no = idesc->bAlternateSetting; 1728 break; 1729 case USB_SET_ALTINTERFACE: 1730 if (!(flag & FWRITE)) 1731 return EPERM; 1732 ai = (struct usb_alt_interface *)addr; 1733 err = usbd_device2interface_handle(sc->sc_udev, 1734 ai->uai_interface_index, &iface); 1735 if (err) 1736 return EINVAL; 1737 err = ugen_set_interface(sc, ai->uai_interface_index, 1738 ai->uai_alt_no); 1739 if (err) 1740 return EINVAL; 1741 break; 1742 case USB_GET_NO_ALT: 1743 ai = (struct usb_alt_interface *)addr; 1744 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1745 if (cdesc == NULL) 1746 return EINVAL; 1747 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1748 if (idesc == NULL) { 1749 kmem_free(cdesc, cdesclen); 1750 return EINVAL; 1751 } 1752 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1753 idesc->bInterfaceNumber); 1754 kmem_free(cdesc, cdesclen); 1755 break; 1756 case USB_GET_DEVICE_DESC: 1757 *(usb_device_descriptor_t *)addr = 1758 *usbd_get_device_descriptor(sc->sc_udev); 1759 break; 1760 case USB_GET_CONFIG_DESC: 1761 cd = (struct usb_config_desc *)addr; 1762 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1763 if (cdesc == NULL) 1764 return EINVAL; 1765 cd->ucd_desc = *cdesc; 1766 kmem_free(cdesc, cdesclen); 1767 break; 1768 case USB_GET_INTERFACE_DESC: 1769 id = (struct usb_interface_desc *)addr; 1770 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1771 if (cdesc == NULL) 1772 return EINVAL; 1773 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1774 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1775 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1776 else 1777 alt = id->uid_alt_index; 1778 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1779 if (idesc == NULL) { 1780 kmem_free(cdesc, cdesclen); 1781 return EINVAL; 1782 } 1783 id->uid_desc = *idesc; 1784 kmem_free(cdesc, cdesclen); 1785 break; 1786 case USB_GET_ENDPOINT_DESC: 1787 ed = (struct usb_endpoint_desc *)addr; 1788 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1789 if (cdesc == NULL) 1790 return EINVAL; 1791 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1792 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1793 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1794 else 1795 alt = ed->ued_alt_index; 1796 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1797 alt, ed->ued_endpoint_index); 1798 if (edesc == NULL) { 1799 kmem_free(cdesc, cdesclen); 1800 return EINVAL; 1801 } 1802 ed->ued_desc = *edesc; 1803 kmem_free(cdesc, cdesclen); 1804 break; 1805 case USB_GET_FULL_DESC: 1806 { 1807 int len; 1808 struct iovec iov; 1809 struct uio uio; 1810 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1811 1812 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1813 if (cdesc == NULL) 1814 return EINVAL; 1815 len = cdesclen; 1816 if (len > fd->ufd_size) 1817 len = fd->ufd_size; 1818 iov.iov_base = (void *)fd->ufd_data; 1819 iov.iov_len = len; 1820 uio.uio_iov = &iov; 1821 uio.uio_iovcnt = 1; 1822 uio.uio_resid = len; 1823 uio.uio_offset = 0; 1824 uio.uio_rw = UIO_READ; 1825 uio.uio_vmspace = l->l_proc->p_vmspace; 1826 error = uiomove((void *)cdesc, len, &uio); 1827 kmem_free(cdesc, cdesclen); 1828 return error; 1829 } 1830 case USB_GET_STRING_DESC: { 1831 int len; 1832 si = (struct usb_string_desc *)addr; 1833 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1834 si->usd_language_id, &si->usd_desc, &len); 1835 if (err) 1836 return EINVAL; 1837 break; 1838 } 1839 case USB_DO_REQUEST: 1840 { 1841 struct usb_ctl_request *ur = (void *)addr; 1842 int len = UGETW(ur->ucr_request.wLength); 1843 struct iovec iov; 1844 struct uio uio; 1845 void *ptr = 0; 1846 usbd_status xerr; 1847 1848 error = 0; 1849 1850 if (!(flag & FWRITE)) 1851 return EPERM; 1852 /* Avoid requests that would damage the bus integrity. */ 1853 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1854 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1855 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1856 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1857 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1858 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1859 return EINVAL; 1860 1861 if (len < 0 || len > 32767) 1862 return EINVAL; 1863 if (len != 0) { 1864 iov.iov_base = (void *)ur->ucr_data; 1865 iov.iov_len = len; 1866 uio.uio_iov = &iov; 1867 uio.uio_iovcnt = 1; 1868 uio.uio_resid = len; 1869 uio.uio_offset = 0; 1870 uio.uio_rw = 1871 ur->ucr_request.bmRequestType & UT_READ ? 1872 UIO_READ : UIO_WRITE; 1873 uio.uio_vmspace = l->l_proc->p_vmspace; 1874 ptr = kmem_alloc(len, KM_SLEEP); 1875 if (uio.uio_rw == UIO_WRITE) { 1876 error = uiomove(ptr, len, &uio); 1877 if (error) 1878 goto ret; 1879 } 1880 } 1881 sce = &sc->sc_endpoints[endpt][IN]; 1882 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1883 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1884 if (xerr) { 1885 error = EIO; 1886 goto ret; 1887 } 1888 if (len != 0) { 1889 if (uio.uio_rw == UIO_READ) { 1890 size_t alen = uimin(len, ur->ucr_actlen); 1891 error = uiomove(ptr, alen, &uio); 1892 if (error) 1893 goto ret; 1894 } 1895 } 1896 ret: 1897 if (ptr) 1898 kmem_free(ptr, len); 1899 return error; 1900 } 1901 case USB_GET_DEVICEINFO: 1902 usbd_fill_deviceinfo(sc->sc_udev, 1903 (struct usb_device_info *)addr, 0); 1904 break; 1905 case USB_GET_DEVICEINFO_OLD: 1906 { 1907 int ret; 1908 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1909 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1910 usbd_devinfo_vp, usbd_printBCD), 1911 enosys(), ret); 1912 if (ret == 0) 1913 return 0; 1914 return EINVAL; 1915 } 1916 default: 1917 return EINVAL; 1918 } 1919 return 0; 1920 } 1921 1922 static int 1923 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1924 { 1925 int endpt = UGENENDPOINT(dev); 1926 struct ugen_softc *sc; 1927 int error; 1928 1929 if ((sc = ugenif_acquire(UGENUNIT(dev))) == 0) 1930 return ENXIO; 1931 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1932 ugenif_release(sc); 1933 1934 return error; 1935 } 1936 1937 static int 1938 ugenpoll(dev_t dev, int events, struct lwp *l) 1939 { 1940 struct ugen_softc *sc; 1941 struct ugen_endpoint *sce_in, *sce_out; 1942 int revents = 0; 1943 1944 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1945 return POLLHUP; 1946 1947 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 1948 revents |= POLLERR; 1949 goto out; 1950 } 1951 1952 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1953 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1954 KASSERT(sce_in->edesc || sce_out->edesc); 1955 KASSERT(sce_in->pipeh || sce_out->pipeh); 1956 1957 mutex_enter(&sc->sc_lock); 1958 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1959 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1960 case UE_INTERRUPT: 1961 if (sce_in->q.c_cc > 0) 1962 revents |= events & (POLLIN | POLLRDNORM); 1963 else 1964 selrecord(l, &sce_in->rsel); 1965 break; 1966 case UE_ISOCHRONOUS: 1967 if (sce_in->cur != sce_in->fill) 1968 revents |= events & (POLLIN | POLLRDNORM); 1969 else 1970 selrecord(l, &sce_in->rsel); 1971 break; 1972 case UE_BULK: 1973 if (sce_in->state & UGEN_BULK_RA) { 1974 if (sce_in->ra_wb_used > 0) 1975 revents |= events & 1976 (POLLIN | POLLRDNORM); 1977 else 1978 selrecord(l, &sce_in->rsel); 1979 break; 1980 } 1981 /* 1982 * We have no easy way of determining if a read will 1983 * yield any data or a write will happen. 1984 * Pretend they will. 1985 */ 1986 revents |= events & (POLLIN | POLLRDNORM); 1987 break; 1988 default: 1989 break; 1990 } 1991 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1992 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1993 case UE_INTERRUPT: 1994 case UE_ISOCHRONOUS: 1995 /* XXX unimplemented */ 1996 break; 1997 case UE_BULK: 1998 if (sce_out->state & UGEN_BULK_WB) { 1999 if (sce_out->ra_wb_used < 2000 sce_out->limit - sce_out->ibuf) 2001 revents |= events & 2002 (POLLOUT | POLLWRNORM); 2003 else 2004 selrecord(l, &sce_out->rsel); 2005 break; 2006 } 2007 /* 2008 * We have no easy way of determining if a read will 2009 * yield any data or a write will happen. 2010 * Pretend they will. 2011 */ 2012 revents |= events & (POLLOUT | POLLWRNORM); 2013 break; 2014 default: 2015 break; 2016 } 2017 2018 mutex_exit(&sc->sc_lock); 2019 2020 out: ugenif_release(sc); 2021 return revents; 2022 } 2023 2024 static void 2025 filt_ugenrdetach(struct knote *kn) 2026 { 2027 struct ugen_endpoint *sce = kn->kn_hook; 2028 struct ugen_softc *sc = sce->sc; 2029 2030 mutex_enter(&sc->sc_lock); 2031 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 2032 mutex_exit(&sc->sc_lock); 2033 } 2034 2035 static int 2036 filt_ugenread_intr(struct knote *kn, long hint) 2037 { 2038 struct ugen_endpoint *sce = kn->kn_hook; 2039 struct ugen_softc *sc = sce->sc; 2040 int ret; 2041 2042 mutex_enter(&sc->sc_lock); 2043 if (sc->sc_dying) { 2044 ret = 0; 2045 } else { 2046 kn->kn_data = sce->q.c_cc; 2047 ret = kn->kn_data > 0; 2048 } 2049 mutex_exit(&sc->sc_lock); 2050 2051 return ret; 2052 } 2053 2054 static int 2055 filt_ugenread_isoc(struct knote *kn, long hint) 2056 { 2057 struct ugen_endpoint *sce = kn->kn_hook; 2058 struct ugen_softc *sc = sce->sc; 2059 int ret; 2060 2061 mutex_enter(&sc->sc_lock); 2062 if (sc->sc_dying) { 2063 ret = 0; 2064 } else if (sce->cur == sce->fill) { 2065 ret = 0; 2066 } else if (sce->cur < sce->fill) { 2067 kn->kn_data = sce->fill - sce->cur; 2068 ret = 1; 2069 } else { 2070 kn->kn_data = (sce->limit - sce->cur) + 2071 (sce->fill - sce->ibuf); 2072 ret = 1; 2073 } 2074 mutex_exit(&sc->sc_lock); 2075 2076 return ret; 2077 } 2078 2079 static int 2080 filt_ugenread_bulk(struct knote *kn, long hint) 2081 { 2082 struct ugen_endpoint *sce = kn->kn_hook; 2083 struct ugen_softc *sc = sce->sc; 2084 int ret; 2085 2086 mutex_enter(&sc->sc_lock); 2087 if (sc->sc_dying) { 2088 ret = 0; 2089 } else if (!(sce->state & UGEN_BULK_RA)) { 2090 /* 2091 * We have no easy way of determining if a read will 2092 * yield any data or a write will happen. 2093 * So, emulate "seltrue". 2094 */ 2095 ret = filt_seltrue(kn, hint); 2096 } else if (sce->ra_wb_used == 0) { 2097 ret = 0; 2098 } else { 2099 kn->kn_data = sce->ra_wb_used; 2100 ret = 1; 2101 } 2102 mutex_exit(&sc->sc_lock); 2103 2104 return ret; 2105 } 2106 2107 static int 2108 filt_ugenwrite_bulk(struct knote *kn, long hint) 2109 { 2110 struct ugen_endpoint *sce = kn->kn_hook; 2111 struct ugen_softc *sc = sce->sc; 2112 int ret; 2113 2114 mutex_enter(&sc->sc_lock); 2115 if (sc->sc_dying) { 2116 ret = 0; 2117 } else if (!(sce->state & UGEN_BULK_WB)) { 2118 /* 2119 * We have no easy way of determining if a read will 2120 * yield any data or a write will happen. 2121 * So, emulate "seltrue". 2122 */ 2123 ret = filt_seltrue(kn, hint); 2124 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2125 ret = 0; 2126 } else { 2127 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2128 ret = 1; 2129 } 2130 mutex_exit(&sc->sc_lock); 2131 2132 return ret; 2133 } 2134 2135 static const struct filterops ugenread_intr_filtops = { 2136 .f_isfd = 1, 2137 .f_attach = NULL, 2138 .f_detach = filt_ugenrdetach, 2139 .f_event = filt_ugenread_intr, 2140 }; 2141 2142 static const struct filterops ugenread_isoc_filtops = { 2143 .f_isfd = 1, 2144 .f_attach = NULL, 2145 .f_detach = filt_ugenrdetach, 2146 .f_event = filt_ugenread_isoc, 2147 }; 2148 2149 static const struct filterops ugenread_bulk_filtops = { 2150 .f_isfd = 1, 2151 .f_attach = NULL, 2152 .f_detach = filt_ugenrdetach, 2153 .f_event = filt_ugenread_bulk, 2154 }; 2155 2156 static const struct filterops ugenwrite_bulk_filtops = { 2157 .f_isfd = 1, 2158 .f_attach = NULL, 2159 .f_detach = filt_ugenrdetach, 2160 .f_event = filt_ugenwrite_bulk, 2161 }; 2162 2163 static int 2164 ugenkqfilter(dev_t dev, struct knote *kn) 2165 { 2166 struct ugen_softc *sc; 2167 struct ugen_endpoint *sce; 2168 struct klist *klist; 2169 int error; 2170 2171 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2172 return ENXIO; 2173 2174 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2175 error = ENODEV; 2176 goto out; 2177 } 2178 2179 switch (kn->kn_filter) { 2180 case EVFILT_READ: 2181 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2182 if (sce == NULL) { 2183 error = EINVAL; 2184 goto out; 2185 } 2186 2187 klist = &sce->rsel.sel_klist; 2188 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2189 case UE_INTERRUPT: 2190 kn->kn_fop = &ugenread_intr_filtops; 2191 break; 2192 case UE_ISOCHRONOUS: 2193 kn->kn_fop = &ugenread_isoc_filtops; 2194 break; 2195 case UE_BULK: 2196 kn->kn_fop = &ugenread_bulk_filtops; 2197 break; 2198 default: 2199 error = EINVAL; 2200 goto out; 2201 } 2202 break; 2203 2204 case EVFILT_WRITE: 2205 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2206 if (sce == NULL) { 2207 error = EINVAL; 2208 goto out; 2209 } 2210 2211 klist = &sce->rsel.sel_klist; 2212 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2213 case UE_INTERRUPT: 2214 case UE_ISOCHRONOUS: 2215 /* XXX poll doesn't support this */ 2216 error = EINVAL; 2217 goto out; 2218 2219 case UE_BULK: 2220 kn->kn_fop = &ugenwrite_bulk_filtops; 2221 break; 2222 default: 2223 error = EINVAL; 2224 goto out; 2225 } 2226 break; 2227 2228 default: 2229 error = EINVAL; 2230 goto out; 2231 } 2232 2233 kn->kn_hook = sce; 2234 2235 mutex_enter(&sc->sc_lock); 2236 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2237 mutex_exit(&sc->sc_lock); 2238 2239 error = 0; 2240 2241 out: ugenif_release(sc); 2242 return error; 2243 } 2244 2245 MODULE(MODULE_CLASS_DRIVER, ugen, NULL); 2246 2247 static int 2248 ugen_modcmd(modcmd_t cmd, void *aux) 2249 { 2250 2251 switch (cmd) { 2252 case MODULE_CMD_INIT: 2253 mutex_init(&ugenif.lock, MUTEX_DEFAULT, IPL_NONE); 2254 rb_tree_init(&ugenif.tree, &ugenif_tree_ops); 2255 return 0; 2256 default: 2257 return ENOTTY; 2258 } 2259 } 2260
Indexes created Thu Sep 25 16:09:42 GMT 2025