ugen.c revision 1.157
1 /* $NetBSD: ugen.c,v 1.157 2020/08/18 14:32:34 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 1.157 2020/08/18 14:32:34 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 if (chkopen) { 445 /* 446 * We start at 1, not 0, because we don't care whether the 447 * control endpoint is open or not. It is always present. 448 */ 449 for (endptno = 1; endptno < USB_MAX_ENDPOINTS; endptno++) 450 if (sc->sc_is_open[endptno]) { 451 DPRINTFN(1, 452 ("ugen_set_config: %s - endpoint %d is open\n", 453 device_xname(sc->sc_dev), endptno)); 454 return USBD_IN_USE; 455 } 456 } 457 458 /* Avoid setting the current value. */ 459 cdesc = usbd_get_config_descriptor(dev); 460 if (!cdesc || cdesc->bConfigurationValue != configno) { 461 err = usbd_set_config_no(dev, configno, 1); 462 if (err) 463 return err; 464 } 465 466 ugen_clear_endpoints(sc); 467 468 err = usbd_interface_count(dev, &niface); 469 if (err) 470 return err; 471 472 for (ifaceno = 0; ifaceno < niface; ifaceno++) { 473 DPRINTFN(1,("ugen_set_config: ifaceno %d\n", ifaceno)); 474 err = usbd_device2interface_handle(dev, ifaceno, &iface); 475 if (err) 476 return err; 477 err = usbd_endpoint_count(iface, &nendpt); 478 if (err) 479 return err; 480 for (endptno = 0; endptno < nendpt; endptno++) { 481 ed = usbd_interface2endpoint_descriptor(iface,endptno); 482 KASSERT(ed != NULL); 483 endpt = ed->bEndpointAddress; 484 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 485 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 486 DPRINTFN(1,("ugen_set_config: endptno %d, endpt=0x%02x" 487 "(%d,%d), sce=%p\n", 488 endptno, endpt, UE_GET_ADDR(endpt), 489 UE_GET_DIR(endpt), sce)); 490 sce->sc = sc; 491 sce->edesc = ed; 492 sce->iface = iface; 493 } 494 } 495 return USBD_NORMAL_COMPLETION; 496 } 497 498 static int 499 ugenopen(dev_t dev, int flag, int mode, struct lwp *l) 500 { 501 struct ugen_softc *sc; 502 int unit = UGENUNIT(dev); 503 int endpt = UGENENDPOINT(dev); 504 usb_endpoint_descriptor_t *edesc; 505 struct ugen_endpoint *sce; 506 int dir, isize; 507 usbd_status err; 508 struct usbd_xfer *xfer; 509 int i, j; 510 int error; 511 512 if ((sc = ugenif_acquire(unit)) == NULL) 513 return ENXIO; 514 515 DPRINTFN(5, ("ugenopen: flag=%d, mode=%d, unit=%d endpt=%d\n", 516 flag, mode, unit, endpt)); 517 518 /* The control endpoint allows multiple opens. */ 519 if (endpt == USB_CONTROL_ENDPOINT) { 520 sc->sc_is_open[USB_CONTROL_ENDPOINT] = 1; 521 error = 0; 522 goto out; 523 } 524 525 if (sc->sc_is_open[endpt]) { 526 error = EBUSY; 527 goto out; 528 } 529 530 /* Make sure there are pipes for all directions. */ 531 for (dir = OUT; dir <= IN; dir++) { 532 if (flag & (dir == OUT ? FWRITE : FREAD)) { 533 sce = &sc->sc_endpoints[endpt][dir]; 534 if (sce->edesc == NULL) { 535 error = ENXIO; 536 goto out; 537 } 538 } 539 } 540 541 /* Actually open the pipes. */ 542 /* XXX Should back out properly if it fails. */ 543 for (dir = OUT; dir <= IN; dir++) { 544 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 545 continue; 546 sce = &sc->sc_endpoints[endpt][dir]; 547 sce->state = 0; 548 sce->timeout = USBD_NO_TIMEOUT; 549 DPRINTFN(5, ("ugenopen: sc=%p, endpt=%d, dir=%d, sce=%p\n", 550 sc, endpt, dir, sce)); 551 edesc = sce->edesc; 552 switch (edesc->bmAttributes & UE_XFERTYPE) { 553 case UE_INTERRUPT: 554 if (dir == OUT) { 555 err = usbd_open_pipe(sce->iface, 556 edesc->bEndpointAddress, 0, &sce->pipeh); 557 if (err) { 558 error = EIO; 559 goto out; 560 } 561 break; 562 } 563 isize = UGETW(edesc->wMaxPacketSize); 564 if (isize == 0) { /* shouldn't happen */ 565 error = EINVAL; 566 goto out; 567 } 568 sce->ibuf = kmem_alloc(isize, KM_SLEEP); 569 DPRINTFN(5, ("ugenopen: intr endpt=%d,isize=%d\n", 570 endpt, isize)); 571 if (clalloc(&sce->q, UGEN_IBSIZE, 0) == -1) { 572 kmem_free(sce->ibuf, isize); 573 sce->ibuf = NULL; 574 error = ENOMEM; 575 goto out; 576 } 577 err = usbd_open_pipe_intr(sce->iface, 578 edesc->bEndpointAddress, 579 USBD_SHORT_XFER_OK, &sce->pipeh, sce, 580 sce->ibuf, isize, ugenintr, 581 USBD_DEFAULT_INTERVAL); 582 if (err) { 583 clfree(&sce->q); 584 kmem_free(sce->ibuf, isize); 585 sce->ibuf = NULL; 586 error = EIO; 587 goto out; 588 } 589 DPRINTFN(5, ("ugenopen: interrupt open done\n")); 590 break; 591 case UE_BULK: 592 err = usbd_open_pipe(sce->iface, 593 edesc->bEndpointAddress, 0, &sce->pipeh); 594 if (err) { 595 error = EIO; 596 goto out; 597 } 598 sce->ra_wb_bufsize = UGEN_BULK_RA_WB_BUFSIZE; 599 /* 600 * Use request size for non-RA/WB transfers 601 * as the default. 602 */ 603 sce->ra_wb_reqsize = UGEN_BBSIZE; 604 break; 605 case UE_ISOCHRONOUS: 606 if (dir == OUT) { 607 error = EINVAL; 608 goto out; 609 } 610 isize = UGETW(edesc->wMaxPacketSize); 611 if (isize == 0) { /* shouldn't happen */ 612 error = EINVAL; 613 goto out; 614 } 615 sce->ibuf = kmem_alloc(isize * UGEN_NISOFRAMES, 616 KM_SLEEP); 617 sce->cur = sce->fill = sce->ibuf; 618 sce->limit = sce->ibuf + isize * UGEN_NISOFRAMES; 619 DPRINTFN(5, ("ugenopen: isoc endpt=%d, isize=%d\n", 620 endpt, isize)); 621 err = usbd_open_pipe(sce->iface, 622 edesc->bEndpointAddress, 0, &sce->pipeh); 623 if (err) { 624 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 625 sce->ibuf = NULL; 626 error = EIO; 627 goto out; 628 } 629 for (i = 0; i < UGEN_NISOREQS; ++i) { 630 sce->isoreqs[i].sce = sce; 631 err = usbd_create_xfer(sce->pipeh, 632 isize * UGEN_NISORFRMS, 0, UGEN_NISORFRMS, 633 &xfer); 634 if (err) 635 goto bad; 636 sce->isoreqs[i].xfer = xfer; 637 sce->isoreqs[i].dmabuf = usbd_get_buffer(xfer); 638 for (j = 0; j < UGEN_NISORFRMS; ++j) 639 sce->isoreqs[i].sizes[j] = isize; 640 usbd_setup_isoc_xfer(xfer, &sce->isoreqs[i], 641 sce->isoreqs[i].sizes, UGEN_NISORFRMS, 0, 642 ugen_isoc_rintr); 643 (void)usbd_transfer(xfer); 644 } 645 DPRINTFN(5, ("ugenopen: isoc open done\n")); 646 break; 647 bad: 648 while (--i >= 0) /* implicit buffer free */ 649 usbd_destroy_xfer(sce->isoreqs[i].xfer); 650 usbd_close_pipe(sce->pipeh); 651 sce->pipeh = NULL; 652 kmem_free(sce->ibuf, isize * UGEN_NISOFRAMES); 653 sce->ibuf = NULL; 654 error = ENOMEM; 655 goto out; 656 case UE_CONTROL: 657 sce->timeout = USBD_DEFAULT_TIMEOUT; 658 error = EINVAL; 659 goto out; 660 } 661 } 662 sc->sc_is_open[endpt] = 1; 663 error = 0; 664 out: ugenif_release(sc); 665 return error; 666 } 667 668 static int 669 ugenclose(dev_t dev, int flag, int mode, struct lwp *l) 670 { 671 int endpt = UGENENDPOINT(dev); 672 struct ugen_softc *sc; 673 struct ugen_endpoint *sce; 674 int dir; 675 int i; 676 int error; 677 678 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 679 return ENXIO; 680 681 DPRINTFN(5, ("ugenclose: flag=%d, mode=%d, unit=%d, endpt=%d\n", 682 flag, mode, UGENUNIT(dev), endpt)); 683 684 KASSERT(sc->sc_is_open[endpt]); 685 686 if (endpt == USB_CONTROL_ENDPOINT) { 687 DPRINTFN(5, ("ugenclose: close control\n")); 688 sc->sc_is_open[endpt] = 0; 689 error = 0; 690 goto out; 691 } 692 693 for (dir = OUT; dir <= IN; dir++) { 694 if (!(flag & (dir == OUT ? FWRITE : FREAD))) 695 continue; 696 sce = &sc->sc_endpoints[endpt][dir]; 697 if (sce->pipeh == NULL) 698 continue; 699 DPRINTFN(5, ("ugenclose: endpt=%d dir=%d sce=%p\n", 700 endpt, dir, sce)); 701 702 usbd_abort_pipe(sce->pipeh); 703 704 int isize = UGETW(sce->edesc->wMaxPacketSize); 705 int msize = 0; 706 707 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 708 case UE_INTERRUPT: 709 ndflush(&sce->q, sce->q.c_cc); 710 clfree(&sce->q); 711 msize = isize; 712 break; 713 case UE_ISOCHRONOUS: 714 for (i = 0; i < UGEN_NISOREQS; ++i) 715 usbd_destroy_xfer(sce->isoreqs[i].xfer); 716 msize = isize * UGEN_NISOFRAMES; 717 break; 718 case UE_BULK: 719 if (sce->state & (UGEN_BULK_RA | UGEN_BULK_WB)) { 720 usbd_destroy_xfer(sce->ra_wb_xfer); 721 msize = sce->ra_wb_bufsize; 722 } 723 break; 724 default: 725 break; 726 } 727 usbd_close_pipe(sce->pipeh); 728 sce->pipeh = NULL; 729 if (sce->ibuf != NULL) { 730 kmem_free(sce->ibuf, msize); 731 sce->ibuf = NULL; 732 } 733 } 734 sc->sc_is_open[endpt] = 0; 735 error = 0; 736 737 out: ugenif_release(sc); 738 return error; 739 } 740 741 Static int 742 ugen_do_read(struct ugen_softc *sc, int endpt, struct uio *uio, int flag) 743 { 744 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][IN]; 745 uint32_t n, tn; 746 struct usbd_xfer *xfer; 747 usbd_status err; 748 int error = 0; 749 750 DPRINTFN(5, ("%s: ugenread: %d\n", device_xname(sc->sc_dev), endpt)); 751 752 if (endpt == USB_CONTROL_ENDPOINT) 753 return ENODEV; 754 755 KASSERT(sce->edesc); 756 KASSERT(sce->pipeh); 757 758 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 759 case UE_INTERRUPT: 760 /* Block until activity occurred. */ 761 mutex_enter(&sc->sc_lock); 762 while (sce->q.c_cc == 0) { 763 if (flag & IO_NDELAY) { 764 mutex_exit(&sc->sc_lock); 765 return EWOULDBLOCK; 766 } 767 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 768 /* "ugenri" */ 769 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 770 mstohz(sce->timeout)); 771 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 772 if (sc->sc_dying) 773 error = EIO; 774 if (error) 775 break; 776 } 777 mutex_exit(&sc->sc_lock); 778 779 /* Transfer as many chunks as possible. */ 780 while (sce->q.c_cc > 0 && uio->uio_resid > 0 && !error) { 781 n = uimin(sce->q.c_cc, uio->uio_resid); 782 if (n > sizeof(sc->sc_buffer)) 783 n = sizeof(sc->sc_buffer); 784 785 /* Remove a small chunk from the input queue. */ 786 q_to_b(&sce->q, sc->sc_buffer, n); 787 DPRINTFN(5, ("ugenread: got %d chars\n", n)); 788 789 /* Copy the data to the user process. */ 790 error = uiomove(sc->sc_buffer, n, uio); 791 if (error) 792 break; 793 } 794 break; 795 case UE_BULK: 796 if (sce->state & UGEN_BULK_RA) { 797 DPRINTFN(5, ("ugenread: BULK_RA req: %zd used: %d\n", 798 uio->uio_resid, sce->ra_wb_used)); 799 xfer = sce->ra_wb_xfer; 800 801 mutex_enter(&sc->sc_lock); 802 if (sce->ra_wb_used == 0 && flag & IO_NDELAY) { 803 mutex_exit(&sc->sc_lock); 804 return EWOULDBLOCK; 805 } 806 while (uio->uio_resid > 0 && !error) { 807 while (sce->ra_wb_used == 0) { 808 DPRINTFN(5, 809 ("ugenread: sleep on %p\n", 810 sce)); 811 /* "ugenrb" */ 812 error = cv_timedwait_sig(&sce->cv, 813 &sc->sc_lock, mstohz(sce->timeout)); 814 DPRINTFN(5, 815 ("ugenread: woke, error=%d\n", 816 error)); 817 if (sc->sc_dying) 818 error = EIO; 819 if (error) 820 break; 821 } 822 823 /* Copy data to the process. */ 824 while (uio->uio_resid > 0 825 && sce->ra_wb_used > 0) { 826 n = uimin(uio->uio_resid, 827 sce->ra_wb_used); 828 n = uimin(n, sce->limit - sce->cur); 829 error = uiomove(sce->cur, n, uio); 830 if (error) 831 break; 832 sce->cur += n; 833 sce->ra_wb_used -= n; 834 if (sce->cur == sce->limit) 835 sce->cur = sce->ibuf; 836 } 837 838 /* 839 * If the transfers stopped because the 840 * buffer was full, restart them. 841 */ 842 if (sce->state & UGEN_RA_WB_STOP && 843 sce->ra_wb_used < sce->limit - sce->ibuf) { 844 n = (sce->limit - sce->ibuf) 845 - sce->ra_wb_used; 846 usbd_setup_xfer(xfer, sce, NULL, 847 uimin(n, sce->ra_wb_xferlen), 848 0, USBD_NO_TIMEOUT, 849 ugen_bulkra_intr); 850 sce->state &= ~UGEN_RA_WB_STOP; 851 err = usbd_transfer(xfer); 852 if (err != USBD_IN_PROGRESS) 853 /* 854 * The transfer has not been 855 * queued. Setting STOP 856 * will make us try 857 * again at the next read. 858 */ 859 sce->state |= UGEN_RA_WB_STOP; 860 } 861 } 862 mutex_exit(&sc->sc_lock); 863 break; 864 } 865 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 866 0, 0, &xfer); 867 if (error) 868 return error; 869 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 870 DPRINTFN(1, ("ugenread: start transfer %d bytes\n",n)); 871 tn = n; 872 err = usbd_bulk_transfer(xfer, sce->pipeh, 873 sce->state & UGEN_SHORT_OK ? USBD_SHORT_XFER_OK : 0, 874 sce->timeout, sc->sc_buffer, &tn); 875 if (err) { 876 if (err == USBD_INTERRUPTED) 877 error = EINTR; 878 else if (err == USBD_TIMEOUT) 879 error = ETIMEDOUT; 880 else 881 error = EIO; 882 break; 883 } 884 DPRINTFN(1, ("ugenread: got %d bytes\n", tn)); 885 error = uiomove(sc->sc_buffer, tn, uio); 886 if (error || tn < n) 887 break; 888 } 889 usbd_destroy_xfer(xfer); 890 break; 891 case UE_ISOCHRONOUS: 892 mutex_enter(&sc->sc_lock); 893 while (sce->cur == sce->fill) { 894 if (flag & IO_NDELAY) { 895 mutex_exit(&sc->sc_lock); 896 return EWOULDBLOCK; 897 } 898 /* "ugenri" */ 899 DPRINTFN(5, ("ugenread: sleep on %p\n", sce)); 900 error = cv_timedwait_sig(&sce->cv, &sc->sc_lock, 901 mstohz(sce->timeout)); 902 DPRINTFN(5, ("ugenread: woke, error=%d\n", error)); 903 if (sc->sc_dying) 904 error = EIO; 905 if (error) 906 break; 907 } 908 909 while (sce->cur != sce->fill && uio->uio_resid > 0 && !error) { 910 if(sce->fill > sce->cur) 911 n = uimin(sce->fill - sce->cur, uio->uio_resid); 912 else 913 n = uimin(sce->limit - sce->cur, uio->uio_resid); 914 915 DPRINTFN(5, ("ugenread: isoc got %d chars\n", n)); 916 917 /* Copy the data to the user process. */ 918 error = uiomove(sce->cur, n, uio); 919 if (error) 920 break; 921 sce->cur += n; 922 if (sce->cur >= sce->limit) 923 sce->cur = sce->ibuf; 924 } 925 mutex_exit(&sc->sc_lock); 926 break; 927 928 929 default: 930 return ENXIO; 931 } 932 return error; 933 } 934 935 static int 936 ugenread(dev_t dev, struct uio *uio, int flag) 937 { 938 int endpt = UGENENDPOINT(dev); 939 struct ugen_softc *sc; 940 int error; 941 942 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 943 return ENXIO; 944 error = ugen_do_read(sc, endpt, uio, flag); 945 ugenif_release(sc); 946 947 return error; 948 } 949 950 Static int 951 ugen_do_write(struct ugen_softc *sc, int endpt, struct uio *uio, 952 int flag) 953 { 954 struct ugen_endpoint *sce = &sc->sc_endpoints[endpt][OUT]; 955 uint32_t n; 956 int error = 0; 957 uint32_t tn; 958 char *dbuf; 959 struct usbd_xfer *xfer; 960 usbd_status err; 961 962 DPRINTFN(5, ("%s: ugenwrite: %d\n", device_xname(sc->sc_dev), endpt)); 963 964 if (endpt == USB_CONTROL_ENDPOINT) 965 return ENODEV; 966 967 KASSERT(sce->edesc); 968 KASSERT(sce->pipeh); 969 970 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 971 case UE_BULK: 972 if (sce->state & UGEN_BULK_WB) { 973 DPRINTFN(5, ("ugenwrite: BULK_WB req: %zd used: %d\n", 974 uio->uio_resid, sce->ra_wb_used)); 975 xfer = sce->ra_wb_xfer; 976 977 mutex_enter(&sc->sc_lock); 978 if (sce->ra_wb_used == sce->limit - sce->ibuf && 979 flag & IO_NDELAY) { 980 mutex_exit(&sc->sc_lock); 981 return EWOULDBLOCK; 982 } 983 while (uio->uio_resid > 0 && !error) { 984 while (sce->ra_wb_used == 985 sce->limit - sce->ibuf) { 986 DPRINTFN(5, 987 ("ugenwrite: sleep on %p\n", 988 sce)); 989 /* "ugenwb" */ 990 error = cv_timedwait_sig(&sce->cv, 991 &sc->sc_lock, mstohz(sce->timeout)); 992 DPRINTFN(5, 993 ("ugenwrite: woke, error=%d\n", 994 error)); 995 if (sc->sc_dying) 996 error = EIO; 997 if (error) 998 break; 999 } 1000 1001 /* Copy data from the process. */ 1002 while (uio->uio_resid > 0 && 1003 sce->ra_wb_used < sce->limit - sce->ibuf) { 1004 n = uimin(uio->uio_resid, 1005 (sce->limit - sce->ibuf) 1006 - sce->ra_wb_used); 1007 n = uimin(n, sce->limit - sce->fill); 1008 error = uiomove(sce->fill, n, uio); 1009 if (error) 1010 break; 1011 sce->fill += n; 1012 sce->ra_wb_used += n; 1013 if (sce->fill == sce->limit) 1014 sce->fill = sce->ibuf; 1015 } 1016 1017 /* 1018 * If the transfers stopped because the 1019 * buffer was empty, restart them. 1020 */ 1021 if (sce->state & UGEN_RA_WB_STOP && 1022 sce->ra_wb_used > 0) { 1023 dbuf = (char *)usbd_get_buffer(xfer); 1024 n = uimin(sce->ra_wb_used, 1025 sce->ra_wb_xferlen); 1026 tn = uimin(n, sce->limit - sce->cur); 1027 memcpy(dbuf, sce->cur, tn); 1028 dbuf += tn; 1029 if (n - tn > 0) 1030 memcpy(dbuf, sce->ibuf, 1031 n - tn); 1032 usbd_setup_xfer(xfer, sce, NULL, n, 1033 0, USBD_NO_TIMEOUT, 1034 ugen_bulkwb_intr); 1035 sce->state &= ~UGEN_RA_WB_STOP; 1036 err = usbd_transfer(xfer); 1037 if (err != USBD_IN_PROGRESS) 1038 /* 1039 * The transfer has not been 1040 * queued. Setting STOP 1041 * will make us try again 1042 * at the next read. 1043 */ 1044 sce->state |= UGEN_RA_WB_STOP; 1045 } 1046 } 1047 mutex_exit(&sc->sc_lock); 1048 break; 1049 } 1050 error = usbd_create_xfer(sce->pipeh, UGEN_BBSIZE, 1051 0, 0, &xfer); 1052 if (error) 1053 return error; 1054 while ((n = uimin(UGEN_BBSIZE, uio->uio_resid)) != 0) { 1055 error = uiomove(sc->sc_buffer, n, uio); 1056 if (error) 1057 break; 1058 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1059 err = usbd_bulk_transfer(xfer, sce->pipeh, 0, sce->timeout, 1060 sc->sc_buffer, &n); 1061 if (err) { 1062 if (err == USBD_INTERRUPTED) 1063 error = EINTR; 1064 else if (err == USBD_TIMEOUT) 1065 error = ETIMEDOUT; 1066 else 1067 error = EIO; 1068 break; 1069 } 1070 } 1071 usbd_destroy_xfer(xfer); 1072 break; 1073 case UE_INTERRUPT: 1074 error = usbd_create_xfer(sce->pipeh, 1075 UGETW(sce->edesc->wMaxPacketSize), 0, 0, &xfer); 1076 if (error) 1077 return error; 1078 while ((n = uimin(UGETW(sce->edesc->wMaxPacketSize), 1079 uio->uio_resid)) != 0) { 1080 error = uiomove(sc->sc_buffer, n, uio); 1081 if (error) 1082 break; 1083 DPRINTFN(1, ("ugenwrite: transfer %d bytes\n", n)); 1084 err = usbd_intr_transfer(xfer, sce->pipeh, 0, 1085 sce->timeout, sc->sc_buffer, &n); 1086 if (err) { 1087 if (err == USBD_INTERRUPTED) 1088 error = EINTR; 1089 else if (err == USBD_TIMEOUT) 1090 error = ETIMEDOUT; 1091 else 1092 error = EIO; 1093 break; 1094 } 1095 } 1096 usbd_destroy_xfer(xfer); 1097 break; 1098 default: 1099 return ENXIO; 1100 } 1101 return error; 1102 } 1103 1104 static int 1105 ugenwrite(dev_t dev, struct uio *uio, int flag) 1106 { 1107 int endpt = UGENENDPOINT(dev); 1108 struct ugen_softc *sc; 1109 int error; 1110 1111 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1112 return ENXIO; 1113 error = ugen_do_write(sc, endpt, uio, flag); 1114 ugenif_release(sc); 1115 1116 return error; 1117 } 1118 1119 static int 1120 ugen_activate(device_t self, enum devact act) 1121 { 1122 struct ugen_softc *sc = device_private(self); 1123 1124 switch (act) { 1125 case DVACT_DEACTIVATE: 1126 sc->sc_dying = 1; 1127 return 0; 1128 default: 1129 return EOPNOTSUPP; 1130 } 1131 } 1132 1133 static int 1134 ugen_detach(device_t self, int flags) 1135 { 1136 struct ugen_softc *sc = device_private(self); 1137 struct ugen_endpoint *sce; 1138 int i, dir; 1139 int maj, mn; 1140 1141 DPRINTF(("ugen_detach: sc=%p flags=%d\n", sc, flags)); 1142 1143 sc->sc_dying = 1; 1144 pmf_device_deregister(self); 1145 1146 if (!sc->sc_attached) 1147 goto out; 1148 1149 /* Abort all pipes. Causes processes waiting for transfer to wake. */ 1150 for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1151 for (dir = OUT; dir <= IN; dir++) { 1152 sce = &sc->sc_endpoints[i][dir]; 1153 if (sce->pipeh) 1154 usbd_abort_pipe(sce->pipeh); 1155 } 1156 } 1157 1158 mutex_enter(&sc->sc_lock); 1159 if (--sc->sc_refcnt >= 0) { 1160 /* Wake everyone */ 1161 for (i = 0; i < USB_MAX_ENDPOINTS; i++) 1162 cv_signal(&sc->sc_endpoints[i][IN].cv); 1163 /* Wait for processes to go away. */ 1164 if (cv_timedwait(&sc->sc_detach_cv, &sc->sc_lock, hz * 60)) 1165 aprint_error_dev(self, ": didn't detach\n"); 1166 } 1167 mutex_exit(&sc->sc_lock); 1168 1169 /* locate the major number */ 1170 maj = cdevsw_lookup_major(&ugen_cdevsw); 1171 1172 /* Nuke the vnodes for any open instances (calls close). */ 1173 mn = sc->sc_unit * USB_MAX_ENDPOINTS; 1174 vdevgone(maj, mn, mn + USB_MAX_ENDPOINTS - 1, VCHR); 1175 1176 usbd_add_drv_event(USB_EVENT_DRIVER_DETACH, sc->sc_udev, sc->sc_dev); 1177 ugenif_put_unit(sc); 1178 1179 out: for (i = 0; i < USB_MAX_ENDPOINTS; i++) { 1180 for (dir = OUT; dir <= IN; dir++) { 1181 sce = &sc->sc_endpoints[i][dir]; 1182 seldestroy(&sce->rsel); 1183 cv_destroy(&sce->cv); 1184 } 1185 } 1186 1187 cv_destroy(&sc->sc_detach_cv); 1188 mutex_destroy(&sc->sc_lock); 1189 1190 return 0; 1191 } 1192 1193 Static void 1194 ugenintr(struct usbd_xfer *xfer, void *addr, usbd_status status) 1195 { 1196 struct ugen_endpoint *sce = addr; 1197 struct ugen_softc *sc = sce->sc; 1198 uint32_t count; 1199 u_char *ibuf; 1200 1201 if (status == USBD_CANCELLED) 1202 return; 1203 1204 if (status != USBD_NORMAL_COMPLETION) { 1205 DPRINTF(("ugenintr: status=%d\n", status)); 1206 if (status == USBD_STALLED) 1207 usbd_clear_endpoint_stall_async(sce->pipeh); 1208 return; 1209 } 1210 1211 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1212 ibuf = sce->ibuf; 1213 1214 DPRINTFN(5, ("ugenintr: xfer=%p status=%d count=%d\n", 1215 xfer, status, count)); 1216 DPRINTFN(5, (" data = %02x %02x %02x\n", 1217 ibuf[0], ibuf[1], ibuf[2])); 1218 1219 mutex_enter(&sc->sc_lock); 1220 (void)b_to_q(ibuf, count, &sce->q); 1221 cv_signal(&sce->cv); 1222 mutex_exit(&sc->sc_lock); 1223 selnotify(&sce->rsel, 0, 0); 1224 } 1225 1226 Static void 1227 ugen_isoc_rintr(struct usbd_xfer *xfer, void *addr, 1228 usbd_status status) 1229 { 1230 struct isoreq *req = addr; 1231 struct ugen_endpoint *sce = req->sce; 1232 struct ugen_softc *sc = sce->sc; 1233 uint32_t count, n; 1234 int i, isize; 1235 1236 /* Return if we are aborting. */ 1237 if (status == USBD_CANCELLED) 1238 return; 1239 1240 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1241 DPRINTFN(5,("ugen_isoc_rintr: xfer %ld, count=%d\n", 1242 (long)(req - sce->isoreqs), count)); 1243 1244 mutex_enter(&sc->sc_lock); 1245 1246 /* throw away oldest input if the buffer is full */ 1247 if (sce->fill < sce->cur && sce->cur <= sce->fill + count) { 1248 sce->cur += count; 1249 if (sce->cur >= sce->limit) 1250 sce->cur = sce->ibuf + (sce->limit - sce->cur); 1251 DPRINTFN(5, ("ugen_isoc_rintr: throwing away %d bytes\n", 1252 count)); 1253 } 1254 1255 isize = UGETW(sce->edesc->wMaxPacketSize); 1256 for (i = 0; i < UGEN_NISORFRMS; i++) { 1257 uint32_t actlen = req->sizes[i]; 1258 char const *tbuf = (char const *)req->dmabuf + isize * i; 1259 1260 /* copy data to buffer */ 1261 while (actlen > 0) { 1262 n = uimin(actlen, sce->limit - sce->fill); 1263 memcpy(sce->fill, tbuf, n); 1264 1265 tbuf += n; 1266 actlen -= n; 1267 sce->fill += n; 1268 if (sce->fill == sce->limit) 1269 sce->fill = sce->ibuf; 1270 } 1271 1272 /* setup size for next transfer */ 1273 req->sizes[i] = isize; 1274 } 1275 1276 usbd_setup_isoc_xfer(xfer, req, req->sizes, UGEN_NISORFRMS, 0, 1277 ugen_isoc_rintr); 1278 (void)usbd_transfer(xfer); 1279 1280 cv_signal(&sce->cv); 1281 mutex_exit(&sc->sc_lock); 1282 selnotify(&sce->rsel, 0, 0); 1283 } 1284 1285 Static void 1286 ugen_bulkra_intr(struct usbd_xfer *xfer, void *addr, 1287 usbd_status status) 1288 { 1289 struct ugen_endpoint *sce = addr; 1290 struct ugen_softc *sc = sce->sc; 1291 uint32_t count, n; 1292 char const *tbuf; 1293 usbd_status err; 1294 1295 /* Return if we are aborting. */ 1296 if (status == USBD_CANCELLED) 1297 return; 1298 1299 if (status != USBD_NORMAL_COMPLETION) { 1300 DPRINTF(("ugen_bulkra_intr: status=%d\n", status)); 1301 sce->state |= UGEN_RA_WB_STOP; 1302 if (status == USBD_STALLED) 1303 usbd_clear_endpoint_stall_async(sce->pipeh); 1304 return; 1305 } 1306 1307 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1308 1309 mutex_enter(&sc->sc_lock); 1310 1311 /* Keep track of how much is in the buffer. */ 1312 sce->ra_wb_used += count; 1313 1314 /* Copy data to buffer. */ 1315 tbuf = (char const *)usbd_get_buffer(sce->ra_wb_xfer); 1316 n = uimin(count, sce->limit - sce->fill); 1317 memcpy(sce->fill, tbuf, n); 1318 tbuf += n; 1319 count -= n; 1320 sce->fill += n; 1321 if (sce->fill == sce->limit) 1322 sce->fill = sce->ibuf; 1323 if (count > 0) { 1324 memcpy(sce->fill, tbuf, count); 1325 sce->fill += count; 1326 } 1327 1328 /* Set up the next request if necessary. */ 1329 n = (sce->limit - sce->ibuf) - sce->ra_wb_used; 1330 if (n > 0) { 1331 usbd_setup_xfer(xfer, sce, NULL, uimin(n, sce->ra_wb_xferlen), 0, 1332 USBD_NO_TIMEOUT, ugen_bulkra_intr); 1333 err = usbd_transfer(xfer); 1334 if (err != USBD_IN_PROGRESS) { 1335 printf("usbd_bulkra_intr: error=%d\n", err); 1336 /* 1337 * The transfer has not been queued. Setting STOP 1338 * will make us try again at the next read. 1339 */ 1340 sce->state |= UGEN_RA_WB_STOP; 1341 } 1342 } 1343 else 1344 sce->state |= UGEN_RA_WB_STOP; 1345 1346 cv_signal(&sce->cv); 1347 mutex_exit(&sc->sc_lock); 1348 selnotify(&sce->rsel, 0, 0); 1349 } 1350 1351 Static void 1352 ugen_bulkwb_intr(struct usbd_xfer *xfer, void *addr, 1353 usbd_status status) 1354 { 1355 struct ugen_endpoint *sce = addr; 1356 struct ugen_softc *sc = sce->sc; 1357 uint32_t count, n; 1358 char *tbuf; 1359 usbd_status err; 1360 1361 /* Return if we are aborting. */ 1362 if (status == USBD_CANCELLED) 1363 return; 1364 1365 if (status != USBD_NORMAL_COMPLETION) { 1366 DPRINTF(("ugen_bulkwb_intr: status=%d\n", status)); 1367 sce->state |= UGEN_RA_WB_STOP; 1368 if (status == USBD_STALLED) 1369 usbd_clear_endpoint_stall_async(sce->pipeh); 1370 return; 1371 } 1372 1373 usbd_get_xfer_status(xfer, NULL, NULL, &count, NULL); 1374 1375 mutex_enter(&sc->sc_lock); 1376 1377 /* Keep track of how much is in the buffer. */ 1378 sce->ra_wb_used -= count; 1379 1380 /* Update buffer pointers. */ 1381 sce->cur += count; 1382 if (sce->cur >= sce->limit) 1383 sce->cur = sce->ibuf + (sce->cur - sce->limit); 1384 1385 /* Set up next request if necessary. */ 1386 if (sce->ra_wb_used > 0) { 1387 /* copy data from buffer */ 1388 tbuf = (char *)usbd_get_buffer(sce->ra_wb_xfer); 1389 count = uimin(sce->ra_wb_used, sce->ra_wb_xferlen); 1390 n = uimin(count, sce->limit - sce->cur); 1391 memcpy(tbuf, sce->cur, n); 1392 tbuf += n; 1393 if (count - n > 0) 1394 memcpy(tbuf, sce->ibuf, count - n); 1395 1396 usbd_setup_xfer(xfer, sce, NULL, count, 0, USBD_NO_TIMEOUT, 1397 ugen_bulkwb_intr); 1398 err = usbd_transfer(xfer); 1399 if (err != USBD_IN_PROGRESS) { 1400 printf("usbd_bulkwb_intr: error=%d\n", err); 1401 /* 1402 * The transfer has not been queued. Setting STOP 1403 * will make us try again at the next write. 1404 */ 1405 sce->state |= UGEN_RA_WB_STOP; 1406 } 1407 } 1408 else 1409 sce->state |= UGEN_RA_WB_STOP; 1410 1411 cv_signal(&sce->cv); 1412 mutex_exit(&sc->sc_lock); 1413 selnotify(&sce->rsel, 0, 0); 1414 } 1415 1416 Static usbd_status 1417 ugen_set_interface(struct ugen_softc *sc, int ifaceidx, int altno) 1418 { 1419 struct usbd_interface *iface; 1420 usb_endpoint_descriptor_t *ed; 1421 usbd_status err; 1422 struct ugen_endpoint *sce; 1423 uint8_t niface, nendpt, endptno, endpt; 1424 int dir; 1425 1426 DPRINTFN(15, ("ugen_set_interface %d %d\n", ifaceidx, altno)); 1427 1428 err = usbd_interface_count(sc->sc_udev, &niface); 1429 if (err) 1430 return err; 1431 if (ifaceidx < 0 || ifaceidx >= niface) 1432 return USBD_INVAL; 1433 1434 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1435 if (err) 1436 return err; 1437 err = usbd_endpoint_count(iface, &nendpt); 1438 if (err) 1439 return err; 1440 1441 /* change setting */ 1442 err = usbd_set_interface(iface, altno); 1443 if (err) 1444 return err; 1445 1446 err = usbd_endpoint_count(iface, &nendpt); 1447 if (err) 1448 return err; 1449 1450 ugen_clear_endpoints(sc); 1451 1452 for (endptno = 0; endptno < nendpt; endptno++) { 1453 ed = usbd_interface2endpoint_descriptor(iface,endptno); 1454 KASSERT(ed != NULL); 1455 endpt = ed->bEndpointAddress; 1456 dir = UE_GET_DIR(endpt) == UE_DIR_IN ? IN : OUT; 1457 sce = &sc->sc_endpoints[UE_GET_ADDR(endpt)][dir]; 1458 sce->sc = sc; 1459 sce->edesc = ed; 1460 sce->iface = iface; 1461 } 1462 return 0; 1463 } 1464 1465 /* Retrieve a complete descriptor for a certain device and index. */ 1466 Static usb_config_descriptor_t * 1467 ugen_get_cdesc(struct ugen_softc *sc, int index, int *lenp) 1468 { 1469 usb_config_descriptor_t *cdesc, *tdesc, cdescr; 1470 int len; 1471 usbd_status err; 1472 1473 if (index == USB_CURRENT_CONFIG_INDEX) { 1474 tdesc = usbd_get_config_descriptor(sc->sc_udev); 1475 if (tdesc == NULL) 1476 return NULL; 1477 len = UGETW(tdesc->wTotalLength); 1478 if (lenp) 1479 *lenp = len; 1480 cdesc = kmem_alloc(len, KM_SLEEP); 1481 memcpy(cdesc, tdesc, len); 1482 DPRINTFN(5,("ugen_get_cdesc: current, len=%d\n", len)); 1483 } else { 1484 err = usbd_get_config_desc(sc->sc_udev, index, &cdescr); 1485 if (err) 1486 return 0; 1487 len = UGETW(cdescr.wTotalLength); 1488 DPRINTFN(5,("ugen_get_cdesc: index=%d, len=%d\n", index, len)); 1489 if (lenp) 1490 *lenp = len; 1491 cdesc = kmem_alloc(len, KM_SLEEP); 1492 err = usbd_get_config_desc_full(sc->sc_udev, index, cdesc, len); 1493 if (err) { 1494 kmem_free(cdesc, len); 1495 return 0; 1496 } 1497 } 1498 return cdesc; 1499 } 1500 1501 Static int 1502 ugen_get_alt_index(struct ugen_softc *sc, int ifaceidx) 1503 { 1504 struct usbd_interface *iface; 1505 usbd_status err; 1506 1507 err = usbd_device2interface_handle(sc->sc_udev, ifaceidx, &iface); 1508 if (err) 1509 return -1; 1510 return usbd_get_interface_altindex(iface); 1511 } 1512 1513 Static int 1514 ugen_do_ioctl(struct ugen_softc *sc, int endpt, u_long cmd, 1515 void *addr, int flag, struct lwp *l) 1516 { 1517 struct ugen_endpoint *sce; 1518 usbd_status err; 1519 struct usbd_interface *iface; 1520 struct usb_config_desc *cd; 1521 usb_config_descriptor_t *cdesc; 1522 struct usb_interface_desc *id; 1523 usb_interface_descriptor_t *idesc; 1524 struct usb_endpoint_desc *ed; 1525 usb_endpoint_descriptor_t *edesc; 1526 struct usb_alt_interface *ai; 1527 struct usb_string_desc *si; 1528 uint8_t conf, alt; 1529 int cdesclen; 1530 int error; 1531 int dir; 1532 1533 DPRINTFN(5, ("ugenioctl: cmd=%08lx\n", cmd)); 1534 1535 switch (cmd) { 1536 case FIONBIO: 1537 /* All handled in the upper FS layer. */ 1538 return 0; 1539 case USB_SET_SHORT_XFER: 1540 if (endpt == USB_CONTROL_ENDPOINT) 1541 return EINVAL; 1542 /* This flag only affects read */ 1543 sce = &sc->sc_endpoints[endpt][IN]; 1544 if (sce == NULL || sce->pipeh == NULL) 1545 return EINVAL; 1546 if (*(int *)addr) 1547 sce->state |= UGEN_SHORT_OK; 1548 else 1549 sce->state &= ~UGEN_SHORT_OK; 1550 return 0; 1551 case USB_SET_TIMEOUT: 1552 for (dir = OUT; dir <= IN; dir++) { 1553 sce = &sc->sc_endpoints[endpt][dir]; 1554 if (sce == NULL) 1555 return EINVAL; 1556 1557 sce->timeout = *(int *)addr; 1558 } 1559 return 0; 1560 case USB_SET_BULK_RA: 1561 if (endpt == USB_CONTROL_ENDPOINT) 1562 return EINVAL; 1563 sce = &sc->sc_endpoints[endpt][IN]; 1564 if (sce == NULL || sce->pipeh == NULL) 1565 return EINVAL; 1566 edesc = sce->edesc; 1567 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1568 return EINVAL; 1569 1570 if (*(int *)addr) { 1571 /* Only turn RA on if it's currently off. */ 1572 if (sce->state & UGEN_BULK_RA) 1573 return 0; 1574 1575 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1576 /* shouldn't happen */ 1577 return EINVAL; 1578 error = usbd_create_xfer(sce->pipeh, 1579 sce->ra_wb_reqsize, 0, 0, &sce->ra_wb_xfer); 1580 if (error) 1581 return error; 1582 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1583 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1584 sce->fill = sce->cur = sce->ibuf; 1585 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1586 sce->ra_wb_used = 0; 1587 sce->state |= UGEN_BULK_RA; 1588 sce->state &= ~UGEN_RA_WB_STOP; 1589 /* Now start reading. */ 1590 usbd_setup_xfer(sce->ra_wb_xfer, sce, NULL, 1591 uimin(sce->ra_wb_xferlen, sce->ra_wb_bufsize), 1592 0, USBD_NO_TIMEOUT, ugen_bulkra_intr); 1593 err = usbd_transfer(sce->ra_wb_xfer); 1594 if (err != USBD_IN_PROGRESS) { 1595 sce->state &= ~UGEN_BULK_RA; 1596 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1597 sce->ibuf = NULL; 1598 usbd_destroy_xfer(sce->ra_wb_xfer); 1599 return EIO; 1600 } 1601 } else { 1602 /* Only turn RA off if it's currently on. */ 1603 if (!(sce->state & UGEN_BULK_RA)) 1604 return 0; 1605 1606 sce->state &= ~UGEN_BULK_RA; 1607 usbd_abort_pipe(sce->pipeh); 1608 usbd_destroy_xfer(sce->ra_wb_xfer); 1609 /* 1610 * XXX Discard whatever's in the buffer, but we 1611 * should keep it around and drain the buffer 1612 * instead. 1613 */ 1614 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1615 sce->ibuf = NULL; 1616 } 1617 return 0; 1618 case USB_SET_BULK_WB: 1619 if (endpt == USB_CONTROL_ENDPOINT) 1620 return EINVAL; 1621 sce = &sc->sc_endpoints[endpt][OUT]; 1622 if (sce == NULL || sce->pipeh == NULL) 1623 return EINVAL; 1624 edesc = sce->edesc; 1625 if ((edesc->bmAttributes & UE_XFERTYPE) != UE_BULK) 1626 return EINVAL; 1627 1628 if (*(int *)addr) { 1629 /* Only turn WB on if it's currently off. */ 1630 if (sce->state & UGEN_BULK_WB) 1631 return 0; 1632 1633 if (sce->ra_wb_bufsize == 0 || sce->ra_wb_reqsize == 0) 1634 /* shouldn't happen */ 1635 return EINVAL; 1636 error = usbd_create_xfer(sce->pipeh, sce->ra_wb_reqsize, 1637 0, 0, &sce->ra_wb_xfer); 1638 sce->ra_wb_xferlen = sce->ra_wb_reqsize; 1639 sce->ibuf = kmem_alloc(sce->ra_wb_bufsize, KM_SLEEP); 1640 sce->fill = sce->cur = sce->ibuf; 1641 sce->limit = sce->ibuf + sce->ra_wb_bufsize; 1642 sce->ra_wb_used = 0; 1643 sce->state |= UGEN_BULK_WB | UGEN_RA_WB_STOP; 1644 } else { 1645 /* Only turn WB off if it's currently on. */ 1646 if (!(sce->state & UGEN_BULK_WB)) 1647 return 0; 1648 1649 sce->state &= ~UGEN_BULK_WB; 1650 /* 1651 * XXX Discard whatever's in the buffer, but we 1652 * should keep it around and keep writing to 1653 * drain the buffer instead. 1654 */ 1655 usbd_abort_pipe(sce->pipeh); 1656 usbd_destroy_xfer(sce->ra_wb_xfer); 1657 kmem_free(sce->ibuf, sce->ra_wb_bufsize); 1658 sce->ibuf = NULL; 1659 } 1660 return 0; 1661 case USB_SET_BULK_RA_OPT: 1662 case USB_SET_BULK_WB_OPT: 1663 { 1664 struct usb_bulk_ra_wb_opt *opt; 1665 1666 if (endpt == USB_CONTROL_ENDPOINT) 1667 return EINVAL; 1668 opt = (struct usb_bulk_ra_wb_opt *)addr; 1669 if (cmd == USB_SET_BULK_RA_OPT) 1670 sce = &sc->sc_endpoints[endpt][IN]; 1671 else 1672 sce = &sc->sc_endpoints[endpt][OUT]; 1673 if (sce == NULL || sce->pipeh == NULL) 1674 return EINVAL; 1675 if (opt->ra_wb_buffer_size < 1 || 1676 opt->ra_wb_buffer_size > UGEN_BULK_RA_WB_BUFMAX || 1677 opt->ra_wb_request_size < 1 || 1678 opt->ra_wb_request_size > opt->ra_wb_buffer_size) 1679 return EINVAL; 1680 /* 1681 * XXX These changes do not take effect until the 1682 * next time RA/WB mode is enabled but they ought to 1683 * take effect immediately. 1684 */ 1685 sce->ra_wb_bufsize = opt->ra_wb_buffer_size; 1686 sce->ra_wb_reqsize = opt->ra_wb_request_size; 1687 return 0; 1688 } 1689 default: 1690 break; 1691 } 1692 1693 if (endpt != USB_CONTROL_ENDPOINT) 1694 return EINVAL; 1695 1696 switch (cmd) { 1697 #ifdef UGEN_DEBUG 1698 case USB_SETDEBUG: 1699 ugendebug = *(int *)addr; 1700 break; 1701 #endif 1702 case USB_GET_CONFIG: 1703 err = usbd_get_config(sc->sc_udev, &conf); 1704 if (err) 1705 return EIO; 1706 *(int *)addr = conf; 1707 break; 1708 case USB_SET_CONFIG: 1709 if (!(flag & FWRITE)) 1710 return EPERM; 1711 err = ugen_set_config(sc, *(int *)addr, 1); 1712 switch (err) { 1713 case USBD_NORMAL_COMPLETION: 1714 break; 1715 case USBD_IN_USE: 1716 return EBUSY; 1717 default: 1718 return EIO; 1719 } 1720 break; 1721 case USB_GET_ALTINTERFACE: 1722 ai = (struct usb_alt_interface *)addr; 1723 err = usbd_device2interface_handle(sc->sc_udev, 1724 ai->uai_interface_index, &iface); 1725 if (err) 1726 return EINVAL; 1727 idesc = usbd_get_interface_descriptor(iface); 1728 if (idesc == NULL) 1729 return EIO; 1730 ai->uai_alt_no = idesc->bAlternateSetting; 1731 break; 1732 case USB_SET_ALTINTERFACE: 1733 if (!(flag & FWRITE)) 1734 return EPERM; 1735 ai = (struct usb_alt_interface *)addr; 1736 err = usbd_device2interface_handle(sc->sc_udev, 1737 ai->uai_interface_index, &iface); 1738 if (err) 1739 return EINVAL; 1740 err = ugen_set_interface(sc, ai->uai_interface_index, 1741 ai->uai_alt_no); 1742 if (err) 1743 return EINVAL; 1744 break; 1745 case USB_GET_NO_ALT: 1746 ai = (struct usb_alt_interface *)addr; 1747 cdesc = ugen_get_cdesc(sc, ai->uai_config_index, &cdesclen); 1748 if (cdesc == NULL) 1749 return EINVAL; 1750 idesc = usbd_find_idesc(cdesc, ai->uai_interface_index, 0); 1751 if (idesc == NULL) { 1752 kmem_free(cdesc, cdesclen); 1753 return EINVAL; 1754 } 1755 ai->uai_alt_no = usbd_get_no_alts(cdesc, 1756 idesc->bInterfaceNumber); 1757 kmem_free(cdesc, cdesclen); 1758 break; 1759 case USB_GET_DEVICE_DESC: 1760 *(usb_device_descriptor_t *)addr = 1761 *usbd_get_device_descriptor(sc->sc_udev); 1762 break; 1763 case USB_GET_CONFIG_DESC: 1764 cd = (struct usb_config_desc *)addr; 1765 cdesc = ugen_get_cdesc(sc, cd->ucd_config_index, &cdesclen); 1766 if (cdesc == NULL) 1767 return EINVAL; 1768 cd->ucd_desc = *cdesc; 1769 kmem_free(cdesc, cdesclen); 1770 break; 1771 case USB_GET_INTERFACE_DESC: 1772 id = (struct usb_interface_desc *)addr; 1773 cdesc = ugen_get_cdesc(sc, id->uid_config_index, &cdesclen); 1774 if (cdesc == NULL) 1775 return EINVAL; 1776 if (id->uid_config_index == USB_CURRENT_CONFIG_INDEX && 1777 id->uid_alt_index == USB_CURRENT_ALT_INDEX) 1778 alt = ugen_get_alt_index(sc, id->uid_interface_index); 1779 else 1780 alt = id->uid_alt_index; 1781 idesc = usbd_find_idesc(cdesc, id->uid_interface_index, alt); 1782 if (idesc == NULL) { 1783 kmem_free(cdesc, cdesclen); 1784 return EINVAL; 1785 } 1786 id->uid_desc = *idesc; 1787 kmem_free(cdesc, cdesclen); 1788 break; 1789 case USB_GET_ENDPOINT_DESC: 1790 ed = (struct usb_endpoint_desc *)addr; 1791 cdesc = ugen_get_cdesc(sc, ed->ued_config_index, &cdesclen); 1792 if (cdesc == NULL) 1793 return EINVAL; 1794 if (ed->ued_config_index == USB_CURRENT_CONFIG_INDEX && 1795 ed->ued_alt_index == USB_CURRENT_ALT_INDEX) 1796 alt = ugen_get_alt_index(sc, ed->ued_interface_index); 1797 else 1798 alt = ed->ued_alt_index; 1799 edesc = usbd_find_edesc(cdesc, ed->ued_interface_index, 1800 alt, ed->ued_endpoint_index); 1801 if (edesc == NULL) { 1802 kmem_free(cdesc, cdesclen); 1803 return EINVAL; 1804 } 1805 ed->ued_desc = *edesc; 1806 kmem_free(cdesc, cdesclen); 1807 break; 1808 case USB_GET_FULL_DESC: 1809 { 1810 int len; 1811 struct iovec iov; 1812 struct uio uio; 1813 struct usb_full_desc *fd = (struct usb_full_desc *)addr; 1814 1815 cdesc = ugen_get_cdesc(sc, fd->ufd_config_index, &cdesclen); 1816 if (cdesc == NULL) 1817 return EINVAL; 1818 len = cdesclen; 1819 if (len > fd->ufd_size) 1820 len = fd->ufd_size; 1821 iov.iov_base = (void *)fd->ufd_data; 1822 iov.iov_len = len; 1823 uio.uio_iov = &iov; 1824 uio.uio_iovcnt = 1; 1825 uio.uio_resid = len; 1826 uio.uio_offset = 0; 1827 uio.uio_rw = UIO_READ; 1828 uio.uio_vmspace = l->l_proc->p_vmspace; 1829 error = uiomove((void *)cdesc, len, &uio); 1830 kmem_free(cdesc, cdesclen); 1831 return error; 1832 } 1833 case USB_GET_STRING_DESC: { 1834 int len; 1835 si = (struct usb_string_desc *)addr; 1836 err = usbd_get_string_desc(sc->sc_udev, si->usd_string_index, 1837 si->usd_language_id, &si->usd_desc, &len); 1838 if (err) 1839 return EINVAL; 1840 break; 1841 } 1842 case USB_DO_REQUEST: 1843 { 1844 struct usb_ctl_request *ur = (void *)addr; 1845 int len = UGETW(ur->ucr_request.wLength); 1846 struct iovec iov; 1847 struct uio uio; 1848 void *ptr = 0; 1849 usbd_status xerr; 1850 1851 error = 0; 1852 1853 if (!(flag & FWRITE)) 1854 return EPERM; 1855 /* Avoid requests that would damage the bus integrity. */ 1856 if ((ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1857 ur->ucr_request.bRequest == UR_SET_ADDRESS) || 1858 (ur->ucr_request.bmRequestType == UT_WRITE_DEVICE && 1859 ur->ucr_request.bRequest == UR_SET_CONFIG) || 1860 (ur->ucr_request.bmRequestType == UT_WRITE_INTERFACE && 1861 ur->ucr_request.bRequest == UR_SET_INTERFACE)) 1862 return EINVAL; 1863 1864 if (len < 0 || len > 32767) 1865 return EINVAL; 1866 if (len != 0) { 1867 iov.iov_base = (void *)ur->ucr_data; 1868 iov.iov_len = len; 1869 uio.uio_iov = &iov; 1870 uio.uio_iovcnt = 1; 1871 uio.uio_resid = len; 1872 uio.uio_offset = 0; 1873 uio.uio_rw = 1874 ur->ucr_request.bmRequestType & UT_READ ? 1875 UIO_READ : UIO_WRITE; 1876 uio.uio_vmspace = l->l_proc->p_vmspace; 1877 ptr = kmem_alloc(len, KM_SLEEP); 1878 if (uio.uio_rw == UIO_WRITE) { 1879 error = uiomove(ptr, len, &uio); 1880 if (error) 1881 goto ret; 1882 } 1883 } 1884 sce = &sc->sc_endpoints[endpt][IN]; 1885 xerr = usbd_do_request_flags(sc->sc_udev, &ur->ucr_request, 1886 ptr, ur->ucr_flags, &ur->ucr_actlen, sce->timeout); 1887 if (xerr) { 1888 error = EIO; 1889 goto ret; 1890 } 1891 if (len != 0) { 1892 if (uio.uio_rw == UIO_READ) { 1893 size_t alen = uimin(len, ur->ucr_actlen); 1894 error = uiomove(ptr, alen, &uio); 1895 if (error) 1896 goto ret; 1897 } 1898 } 1899 ret: 1900 if (ptr) 1901 kmem_free(ptr, len); 1902 return error; 1903 } 1904 case USB_GET_DEVICEINFO: 1905 usbd_fill_deviceinfo(sc->sc_udev, 1906 (struct usb_device_info *)addr, 0); 1907 break; 1908 case USB_GET_DEVICEINFO_OLD: 1909 { 1910 int ret; 1911 MODULE_HOOK_CALL(usb_subr_fill_30_hook, 1912 (sc->sc_udev, (struct usb_device_info_old *)addr, 0, 1913 usbd_devinfo_vp, usbd_printBCD), 1914 enosys(), ret); 1915 if (ret == 0) 1916 return 0; 1917 return EINVAL; 1918 } 1919 default: 1920 return EINVAL; 1921 } 1922 return 0; 1923 } 1924 1925 static int 1926 ugenioctl(dev_t dev, u_long cmd, void *addr, int flag, struct lwp *l) 1927 { 1928 int endpt = UGENENDPOINT(dev); 1929 struct ugen_softc *sc; 1930 int error; 1931 1932 if ((sc = ugenif_acquire(UGENUNIT(dev))) == 0) 1933 return ENXIO; 1934 error = ugen_do_ioctl(sc, endpt, cmd, addr, flag, l); 1935 ugenif_release(sc); 1936 1937 return error; 1938 } 1939 1940 static int 1941 ugenpoll(dev_t dev, int events, struct lwp *l) 1942 { 1943 struct ugen_softc *sc; 1944 struct ugen_endpoint *sce_in, *sce_out; 1945 int revents = 0; 1946 1947 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 1948 return POLLHUP; 1949 1950 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 1951 revents |= POLLERR; 1952 goto out; 1953 } 1954 1955 sce_in = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 1956 sce_out = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 1957 KASSERT(sce_in->edesc || sce_out->edesc); 1958 KASSERT(sce_in->pipeh || sce_out->pipeh); 1959 1960 mutex_enter(&sc->sc_lock); 1961 if (sce_in && sce_in->pipeh && (events & (POLLIN | POLLRDNORM))) 1962 switch (sce_in->edesc->bmAttributes & UE_XFERTYPE) { 1963 case UE_INTERRUPT: 1964 if (sce_in->q.c_cc > 0) 1965 revents |= events & (POLLIN | POLLRDNORM); 1966 else 1967 selrecord(l, &sce_in->rsel); 1968 break; 1969 case UE_ISOCHRONOUS: 1970 if (sce_in->cur != sce_in->fill) 1971 revents |= events & (POLLIN | POLLRDNORM); 1972 else 1973 selrecord(l, &sce_in->rsel); 1974 break; 1975 case UE_BULK: 1976 if (sce_in->state & UGEN_BULK_RA) { 1977 if (sce_in->ra_wb_used > 0) 1978 revents |= events & 1979 (POLLIN | POLLRDNORM); 1980 else 1981 selrecord(l, &sce_in->rsel); 1982 break; 1983 } 1984 /* 1985 * We have no easy way of determining if a read will 1986 * yield any data or a write will happen. 1987 * Pretend they will. 1988 */ 1989 revents |= events & (POLLIN | POLLRDNORM); 1990 break; 1991 default: 1992 break; 1993 } 1994 if (sce_out && sce_out->pipeh && (events & (POLLOUT | POLLWRNORM))) 1995 switch (sce_out->edesc->bmAttributes & UE_XFERTYPE) { 1996 case UE_INTERRUPT: 1997 case UE_ISOCHRONOUS: 1998 /* XXX unimplemented */ 1999 break; 2000 case UE_BULK: 2001 if (sce_out->state & UGEN_BULK_WB) { 2002 if (sce_out->ra_wb_used < 2003 sce_out->limit - sce_out->ibuf) 2004 revents |= events & 2005 (POLLOUT | POLLWRNORM); 2006 else 2007 selrecord(l, &sce_out->rsel); 2008 break; 2009 } 2010 /* 2011 * We have no easy way of determining if a read will 2012 * yield any data or a write will happen. 2013 * Pretend they will. 2014 */ 2015 revents |= events & (POLLOUT | POLLWRNORM); 2016 break; 2017 default: 2018 break; 2019 } 2020 2021 mutex_exit(&sc->sc_lock); 2022 2023 out: ugenif_release(sc); 2024 return revents; 2025 } 2026 2027 static void 2028 filt_ugenrdetach(struct knote *kn) 2029 { 2030 struct ugen_endpoint *sce = kn->kn_hook; 2031 struct ugen_softc *sc = sce->sc; 2032 2033 mutex_enter(&sc->sc_lock); 2034 SLIST_REMOVE(&sce->rsel.sel_klist, kn, knote, kn_selnext); 2035 mutex_exit(&sc->sc_lock); 2036 } 2037 2038 static int 2039 filt_ugenread_intr(struct knote *kn, long hint) 2040 { 2041 struct ugen_endpoint *sce = kn->kn_hook; 2042 struct ugen_softc *sc = sce->sc; 2043 int ret; 2044 2045 mutex_enter(&sc->sc_lock); 2046 if (sc->sc_dying) { 2047 ret = 0; 2048 } else { 2049 kn->kn_data = sce->q.c_cc; 2050 ret = kn->kn_data > 0; 2051 } 2052 mutex_exit(&sc->sc_lock); 2053 2054 return ret; 2055 } 2056 2057 static int 2058 filt_ugenread_isoc(struct knote *kn, long hint) 2059 { 2060 struct ugen_endpoint *sce = kn->kn_hook; 2061 struct ugen_softc *sc = sce->sc; 2062 int ret; 2063 2064 mutex_enter(&sc->sc_lock); 2065 if (sc->sc_dying) { 2066 ret = 0; 2067 } else if (sce->cur == sce->fill) { 2068 ret = 0; 2069 } else if (sce->cur < sce->fill) { 2070 kn->kn_data = sce->fill - sce->cur; 2071 ret = 1; 2072 } else { 2073 kn->kn_data = (sce->limit - sce->cur) + 2074 (sce->fill - sce->ibuf); 2075 ret = 1; 2076 } 2077 mutex_exit(&sc->sc_lock); 2078 2079 return ret; 2080 } 2081 2082 static int 2083 filt_ugenread_bulk(struct knote *kn, long hint) 2084 { 2085 struct ugen_endpoint *sce = kn->kn_hook; 2086 struct ugen_softc *sc = sce->sc; 2087 int ret; 2088 2089 mutex_enter(&sc->sc_lock); 2090 if (sc->sc_dying) { 2091 ret = 0; 2092 } else if (!(sce->state & UGEN_BULK_RA)) { 2093 /* 2094 * We have no easy way of determining if a read will 2095 * yield any data or a write will happen. 2096 * So, emulate "seltrue". 2097 */ 2098 ret = filt_seltrue(kn, hint); 2099 } else if (sce->ra_wb_used == 0) { 2100 ret = 0; 2101 } else { 2102 kn->kn_data = sce->ra_wb_used; 2103 ret = 1; 2104 } 2105 mutex_exit(&sc->sc_lock); 2106 2107 return ret; 2108 } 2109 2110 static int 2111 filt_ugenwrite_bulk(struct knote *kn, long hint) 2112 { 2113 struct ugen_endpoint *sce = kn->kn_hook; 2114 struct ugen_softc *sc = sce->sc; 2115 int ret; 2116 2117 mutex_enter(&sc->sc_lock); 2118 if (sc->sc_dying) { 2119 ret = 0; 2120 } else if (!(sce->state & UGEN_BULK_WB)) { 2121 /* 2122 * We have no easy way of determining if a read will 2123 * yield any data or a write will happen. 2124 * So, emulate "seltrue". 2125 */ 2126 ret = filt_seltrue(kn, hint); 2127 } else if (sce->ra_wb_used == sce->limit - sce->ibuf) { 2128 ret = 0; 2129 } else { 2130 kn->kn_data = (sce->limit - sce->ibuf) - sce->ra_wb_used; 2131 ret = 1; 2132 } 2133 mutex_exit(&sc->sc_lock); 2134 2135 return ret; 2136 } 2137 2138 static const struct filterops ugenread_intr_filtops = { 2139 .f_isfd = 1, 2140 .f_attach = NULL, 2141 .f_detach = filt_ugenrdetach, 2142 .f_event = filt_ugenread_intr, 2143 }; 2144 2145 static const struct filterops ugenread_isoc_filtops = { 2146 .f_isfd = 1, 2147 .f_attach = NULL, 2148 .f_detach = filt_ugenrdetach, 2149 .f_event = filt_ugenread_isoc, 2150 }; 2151 2152 static const struct filterops ugenread_bulk_filtops = { 2153 .f_isfd = 1, 2154 .f_attach = NULL, 2155 .f_detach = filt_ugenrdetach, 2156 .f_event = filt_ugenread_bulk, 2157 }; 2158 2159 static const struct filterops ugenwrite_bulk_filtops = { 2160 .f_isfd = 1, 2161 .f_attach = NULL, 2162 .f_detach = filt_ugenrdetach, 2163 .f_event = filt_ugenwrite_bulk, 2164 }; 2165 2166 static int 2167 ugenkqfilter(dev_t dev, struct knote *kn) 2168 { 2169 struct ugen_softc *sc; 2170 struct ugen_endpoint *sce; 2171 struct klist *klist; 2172 int error; 2173 2174 if ((sc = ugenif_acquire(UGENUNIT(dev))) == NULL) 2175 return ENXIO; 2176 2177 if (UGENENDPOINT(dev) == USB_CONTROL_ENDPOINT) { 2178 error = ENODEV; 2179 goto out; 2180 } 2181 2182 switch (kn->kn_filter) { 2183 case EVFILT_READ: 2184 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][IN]; 2185 if (sce == NULL) { 2186 error = EINVAL; 2187 goto out; 2188 } 2189 2190 klist = &sce->rsel.sel_klist; 2191 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2192 case UE_INTERRUPT: 2193 kn->kn_fop = &ugenread_intr_filtops; 2194 break; 2195 case UE_ISOCHRONOUS: 2196 kn->kn_fop = &ugenread_isoc_filtops; 2197 break; 2198 case UE_BULK: 2199 kn->kn_fop = &ugenread_bulk_filtops; 2200 break; 2201 default: 2202 error = EINVAL; 2203 goto out; 2204 } 2205 break; 2206 2207 case EVFILT_WRITE: 2208 sce = &sc->sc_endpoints[UGENENDPOINT(dev)][OUT]; 2209 if (sce == NULL) { 2210 error = EINVAL; 2211 goto out; 2212 } 2213 2214 klist = &sce->rsel.sel_klist; 2215 switch (sce->edesc->bmAttributes & UE_XFERTYPE) { 2216 case UE_INTERRUPT: 2217 case UE_ISOCHRONOUS: 2218 /* XXX poll doesn't support this */ 2219 error = EINVAL; 2220 goto out; 2221 2222 case UE_BULK: 2223 kn->kn_fop = &ugenwrite_bulk_filtops; 2224 break; 2225 default: 2226 error = EINVAL; 2227 goto out; 2228 } 2229 break; 2230 2231 default: 2232 error = EINVAL; 2233 goto out; 2234 } 2235 2236 kn->kn_hook = sce; 2237 2238 mutex_enter(&sc->sc_lock); 2239 SLIST_INSERT_HEAD(klist, kn, kn_selnext); 2240 mutex_exit(&sc->sc_lock); 2241 2242 error = 0; 2243 2244 out: ugenif_release(sc); 2245 return error; 2246 } 2247 2248 MODULE(MODULE_CLASS_DRIVER, ugen, NULL); 2249 2250 static int 2251 ugen_modcmd(modcmd_t cmd, void *aux) 2252 { 2253 2254 switch (cmd) { 2255 case MODULE_CMD_INIT: 2256 mutex_init(&ugenif.lock, MUTEX_DEFAULT, IPL_NONE); 2257 rb_tree_init(&ugenif.tree, &ugenif_tree_ops); 2258 return 0; 2259 default: 2260 return ENOTTY; 2261 } 2262 } 2263
Indexes created Fri Sep 26 20:09:58 GMT 2025