1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 27 /* 28 * USB video class driver (usbvc(7D)) 29 * 30 * 1. Overview 31 * ------------ 32 * 33 * This driver supports USB video class devices that used to capture video, 34 * e.g., some webcams. It is developed according to "USB Device Class 35 * Definition for Video Devices" spec. This spec defines detail info needed by 36 * designing a USB video device. It is available at: 37 * http://www.usb.org/developers/devclass_docs 38 * 39 * This driver implements: 40 * 41 * - V4L2 interfaces for applications to communicate with video devices. 42 * V4L2 is an API that is widely used by video applications, like Ekiga, 43 * luvcview, etc. The API spec is at: 44 * http://www.thedirks.org/v4l2/ 45 * This driver is according to V4L2 spec version 0.20 46 * 47 * - Video capture function. (Video output is not supported by now.) 48 * 49 * - Isochronous transfer for video data. (Bulk transfer is not supported.) 50 * 51 * - read & mmap I/O methods for userland video applications to get video 52 * data. Userland video applications can use read() system call directly, 53 * it is the simplest way but not the most efficient way. Applications can 54 * also use mmap() system call to map several bufs (they are linked as a 55 * buf list), and then use some specific ioctls to start/stop isoc polling, 56 * to queue/dequeue bufs. 57 * 58 * 2. Source and header files 59 * --------------------------- 60 * 61 * There are two source files and three header files for this driver: 62 * 63 * - usbvc.c Main source file, implements usb video class spec. 64 * 65 * - usbvc_v4l2.c V4L2 interface specific code. 66 * 67 * - usbvc_var.h Main header file, includes soft state structure. 68 * 69 * - usbvc.h The descriptors in usb video class spec. 70 * 71 * - videodev2.h This header file is included in V4L2 spec. It defines 72 * ioctls and data structures that used as an interface between video 73 * applications and video drivers. This is the only header file that 74 * usbvc driver should export to userland application. 75 * 76 * 3. USB video class devices overview 77 * ----------------------------------- 78 * According to UVC spec, there must be one control interface in a UVC device. 79 * Control interface is used to receive control commands from user, all the 80 * commands are sent through default ctrl pipe. usbvc driver implements V4L2 81 * API, so ioctls are implemented to relay user commands to UVC device. 82 * 83 * There can be no or multiple stream interfaces in a UVC device. Stream 84 * interfaces are used to do video data I/O. In practice, if no stream 85 * interface, the video device can do nothing since it has no data I/O. 86 * 87 * usbvc driver parses descriptors of control interface and stream interfaces. 88 * The descriptors tell the function layout and the capability of the device. 89 * During attach, usbvc driver set up some key data structures according to 90 * the descriptors. 91 * 92 * 4. I/O methods 93 * --------------- 94 * 95 * Userland applications use ioctls to set/get video formats of the device, 96 * and control brightness, contrast, image size, etc. 97 * 98 * Besides implementing standard read I/O method to get video data from 99 * the device, usbvc driver also implements some specific ioctls to implement 100 * mmap I/O method. 101 * 102 * A view from userland application: ioctl and mmap flow chart: 103 * 104 * REQBUFS -> QUERYBUF -> mmap() -> 105 * 106 * -> QBUF -> STREAMON -> DQBUF -> process image -> QBUF 107 * ^ | 108 * | | 109 * | v 110 * |---<-------------------- 111 * 112 * The above queue and dequeue buf operations can be stopped by issuing a 113 * STREAMOFF ioctl. 114 * 115 * 5. Device states 116 * ---------------- 117 * 118 * The device has four states (refer to usbai.h): 119 * 120 * - USB_DEV_ONLINE: In action or ready for action. 121 * 122 * - USB_DEV_DISCONNECTED: Hotplug removed, or device not present/correct 123 * on resume (CPR). 124 * 125 * - USB_DEV_SUSPENDED: Device has been suspended along with the system. 126 * 127 * - USB_DEV_PWRED_DOWN: Device has been powered down. (Note that this 128 * driver supports only two power states, powered down and 129 * full power.) 130 * 131 * 6. Serialize 132 * ------------- 133 * In order to avoid race conditions between driver entry points, access to 134 * the device is serialized. All the ioctls, and read, open/close are 135 * serialized. The functions usbvc_serialize/release_access are implemented 136 * for this purpose. 137 * 138 * 7. PM & CPR 139 * ------------ 140 * PM & CPR are supported. pm_busy_component and pm_idle_component mark 141 * the device as busy or idle to the system. 142 */ 143 144 #if defined(lint) && !defined(DEBUG) 145 #define DEBUG 146 #endif 147 148 #define USBDRV_MAJOR_VER 2 149 #define USBDRV_MINOR_VER 0 150 151 #include <sys/usb/usba.h> 152 #include <sys/fcntl.h> 153 #include <sys/cmn_err.h> 154 #include <sys/usb/clients/video/usbvc/usbvc_var.h> 155 #include <sys/videodev2.h> /* V4L2 API header file */ 156 157 /* Descriptors according to USB video class spec */ 158 #include <sys/usb/clients/video/usbvc/usbvc.h> 159 160 static uint_t usbvc_errmask = (uint_t)PRINT_MASK_ALL; 161 static uint_t usbvc_errlevel = 4; 162 static uint_t usbvc_instance_debug = (uint_t)-1; 163 164 static char *name = "usbvc"; /* Driver name, used all over. */ 165 166 /* 167 * Function Prototypes 168 */ 169 170 /* Entries */ 171 static int usbvc_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 172 static int usbvc_attach(dev_info_t *, ddi_attach_cmd_t); 173 static int usbvc_detach(dev_info_t *, ddi_detach_cmd_t); 174 static void usbvc_cleanup(dev_info_t *, usbvc_state_t *); 175 static int usbvc_open(dev_t *, int, int, cred_t *); 176 static int usbvc_close(dev_t, int, int, cred_t *); 177 static int usbvc_read(dev_t, struct uio *uip_p, cred_t *); 178 static int usbvc_strategy(struct buf *); 179 static void usbvc_minphys(struct buf *); 180 static int usbvc_ioctl(dev_t, int, intptr_t, int, cred_t *, int *); 181 static int usbvc_devmap(dev_t, devmap_cookie_t, offset_t, 182 size_t, size_t *, uint_t); 183 184 /* pm and cpr */ 185 static int usbvc_power(dev_info_t *, int, int); 186 static void usbvc_init_power_mgmt(usbvc_state_t *); 187 static void usbvc_destroy_power_mgmt(usbvc_state_t *); 188 static void usbvc_pm_busy_component(usbvc_state_t *); 189 static void usbvc_pm_idle_component(usbvc_state_t *); 190 static int usbvc_pwrlvl0(usbvc_state_t *); 191 static int usbvc_pwrlvl1(usbvc_state_t *); 192 static int usbvc_pwrlvl2(usbvc_state_t *); 193 static int usbvc_pwrlvl3(usbvc_state_t *); 194 static void usbvc_cpr_suspend(dev_info_t *); 195 static void usbvc_cpr_resume(dev_info_t *); 196 static void usbvc_restore_device_state(dev_info_t *, usbvc_state_t *); 197 198 /* Events */ 199 static int usbvc_disconnect_event_cb(dev_info_t *); 200 static int usbvc_reconnect_event_cb(dev_info_t *); 201 202 /* Sync objs and lists */ 203 static void usbvc_init_sync_objs(usbvc_state_t *); 204 static void usbvc_fini_sync_objs(usbvc_state_t *); 205 static void usbvc_init_lists(usbvc_state_t *); 206 static void usbvc_fini_lists(usbvc_state_t *); 207 static void usbvc_free_ctrl_descr(usbvc_state_t *); 208 static void usbvc_free_stream_descr(usbvc_state_t *); 209 210 /* Parse descriptors */ 211 static int usbvc_chk_descr_len(uint8_t, uint8_t, uint8_t, 212 usb_cvs_data_t *); 213 static usbvc_stream_if_t *usbvc_parse_stream_if(usbvc_state_t *, int); 214 static int usbvc_parse_ctrl_if(usbvc_state_t *); 215 static int usbvc_parse_stream_ifs(usbvc_state_t *); 216 static void usbvc_parse_color_still(usbvc_state_t *, 217 usbvc_format_group_t *, usb_cvs_data_t *, uint_t, uint_t); 218 static void usbvc_parse_frames(usbvc_state_t *, usbvc_format_group_t *, 219 usb_cvs_data_t *, uint_t, uint_t); 220 static int usbvc_parse_format_group(usbvc_state_t *, 221 usbvc_format_group_t *, usb_cvs_data_t *, uint_t, uint_t); 222 static int usbvc_parse_format_groups(usbvc_state_t *, usbvc_stream_if_t *); 223 static int usbvc_parse_stream_header(usbvc_state_t *, usbvc_stream_if_t *); 224 225 /* read I/O functions */ 226 static int usbvc_alloc_read_bufs(usbvc_state_t *, usbvc_stream_if_t *); 227 static int usbvc_read_buf(usbvc_state_t *, struct buf *); 228 static void usbvc_free_read_buf(usbvc_buf_t *); 229 static void usbvc_free_read_bufs(usbvc_state_t *, usbvc_stream_if_t *); 230 static void usbvc_close_isoc_pipe(usbvc_state_t *, usbvc_stream_if_t *); 231 232 /* callbacks */ 233 static void usbvc_isoc_cb(usb_pipe_handle_t, usb_isoc_req_t *); 234 static void usbvc_isoc_exc_cb(usb_pipe_handle_t, usb_isoc_req_t *); 235 236 /* Others */ 237 static int usbvc_set_alt(usbvc_state_t *, usbvc_stream_if_t *); 238 static int usbvc_decode_stream_header(usbvc_state_t *, usbvc_buf_grp_t *, 239 mblk_t *, int); 240 static int usbvc_serialize_access(usbvc_state_t *, boolean_t); 241 static void usbvc_release_access(usbvc_state_t *); 242 static int usbvc_set_default_stream_fmt(usbvc_state_t *); 243 244 static usb_event_t usbvc_events = { 245 usbvc_disconnect_event_cb, 246 usbvc_reconnect_event_cb, 247 NULL, NULL 248 }; 249 250 /* module loading stuff */ 251 struct cb_ops usbvc_cb_ops = { 252 usbvc_open, /* open */ 253 usbvc_close, /* close */ 254 usbvc_strategy, /* strategy */ 255 nulldev, /* print */ 256 nulldev, /* dump */ 257 usbvc_read, /* read */ 258 nodev, /* write */ 259 usbvc_ioctl, /* ioctl */ 260 usbvc_devmap, /* devmap */ 261 nodev, /* mmap */ 262 ddi_devmap_segmap, /* segmap */ 263 nochpoll, /* poll */ 264 ddi_prop_op, /* cb_prop_op */ 265 NULL, /* streamtab */ 266 D_MP | D_DEVMAP 267 }; 268 269 static struct dev_ops usbvc_ops = { 270 DEVO_REV, /* devo_rev, */ 271 0, /* refcnt */ 272 usbvc_info, /* info */ 273 nulldev, /* identify */ 274 nulldev, /* probe */ 275 usbvc_attach, /* attach */ 276 usbvc_detach, /* detach */ 277 nodev, /* reset */ 278 &usbvc_cb_ops, /* driver operations */ 279 NULL, /* bus operations */ 280 usbvc_power, /* power */ 281 ddi_quiesce_not_needed, /* quiesce */ 282 }; 283 284 static struct modldrv usbvc_modldrv = { 285 &mod_driverops, 286 "USB video class driver", 287 &usbvc_ops 288 }; 289 290 static struct modlinkage modlinkage = { 291 MODREV_1, 292 &usbvc_modldrv, 293 NULL 294 }; 295 296 /* Soft state structures */ 297 #define USBVC_INITIAL_SOFT_SPACE 1 298 static void *usbvc_statep; 299 300 301 /* 302 * Module-wide initialization routine. 303 */ 304 int 305 _init(void) 306 { 307 int rval; 308 309 if ((rval = ddi_soft_state_init(&usbvc_statep, 310 sizeof (usbvc_state_t), USBVC_INITIAL_SOFT_SPACE)) != 0) { 311 312 return (rval); 313 } 314 315 if ((rval = mod_install(&modlinkage)) != 0) { 316 ddi_soft_state_fini(&usbvc_statep); 317 } 318 319 return (rval); 320 } 321 322 323 /* 324 * Module-wide tear-down routine. 325 */ 326 int 327 _fini(void) 328 { 329 int rval; 330 331 if ((rval = mod_remove(&modlinkage)) != 0) { 332 333 return (rval); 334 } 335 336 ddi_soft_state_fini(&usbvc_statep); 337 338 return (rval); 339 } 340 341 342 int 343 _info(struct modinfo *modinfop) 344 { 345 return (mod_info(&modlinkage, modinfop)); 346 } 347 348 349 /* 350 * usbvc_info: 351 * Get minor number, soft state structure, etc. 352 */ 353 /*ARGSUSED*/ 354 static int 355 usbvc_info(dev_info_t *dip, ddi_info_cmd_t infocmd, 356 void *arg, void **result) 357 { 358 usbvc_state_t *usbvcp; 359 int error = DDI_FAILURE; 360 361 switch (infocmd) { 362 case DDI_INFO_DEVT2DEVINFO: 363 if ((usbvcp = ddi_get_soft_state(usbvc_statep, 364 getminor((dev_t)arg))) != NULL) { 365 *result = usbvcp->usbvc_dip; 366 if (*result != NULL) { 367 error = DDI_SUCCESS; 368 } 369 } else { 370 *result = NULL; 371 } 372 break; 373 case DDI_INFO_DEVT2INSTANCE: 374 *result = (void *)(uintptr_t)getminor((dev_t)arg); 375 error = DDI_SUCCESS; 376 break; 377 default: 378 break; 379 } 380 381 return (error); 382 } 383 384 385 /* 386 * Entry functions. 387 */ 388 389 /* 390 * usbvc_attach: 391 * Attach or resume. 392 * 393 * For attach, initialize state and device, including: 394 * state variables, locks, device node 395 * device registration with system 396 * power management, hotplugging 397 * For resume, restore device and state 398 */ 399 static int 400 usbvc_attach(dev_info_t *dip, ddi_attach_cmd_t cmd) 401 { 402 int instance = ddi_get_instance(dip); 403 usbvc_state_t *usbvcp = NULL; 404 int status; 405 406 switch (cmd) { 407 case DDI_ATTACH: 408 409 break; 410 case DDI_RESUME: 411 usbvc_cpr_resume(dip); 412 413 return (DDI_SUCCESS); 414 default: 415 416 return (DDI_FAILURE); 417 } 418 419 if (ddi_soft_state_zalloc(usbvc_statep, instance) == DDI_SUCCESS) { 420 usbvcp = ddi_get_soft_state(usbvc_statep, instance); 421 } 422 if (usbvcp == NULL) { 423 424 return (DDI_FAILURE); 425 } 426 427 usbvcp->usbvc_dip = dip; 428 429 usbvcp->usbvc_log_handle = usb_alloc_log_hdl(dip, 430 "usbvc", &usbvc_errlevel, 431 &usbvc_errmask, &usbvc_instance_debug, 0); 432 433 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 434 "usbvc_attach: enter"); 435 436 if ((status = usb_client_attach(dip, USBDRV_VERSION, 0)) != 437 USB_SUCCESS) { 438 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 439 "usbvc_attach: usb_client_attach failed, error code:%d", 440 status); 441 442 goto fail; 443 } 444 445 if ((status = usb_get_dev_data(dip, &usbvcp->usbvc_reg, 446 USB_PARSE_LVL_ALL, 0)) != USB_SUCCESS) { 447 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 448 "usbvc_attach: usb_get_dev_data failed, error code:%d", 449 status); 450 451 goto fail; 452 } 453 usbvc_init_sync_objs(usbvcp); 454 455 /* create minor node */ 456 if ((status = ddi_create_minor_node(dip, name, S_IFCHR, instance, 457 "usb_video", 0)) != DDI_SUCCESS) { 458 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 459 "usbvc_attach: Error creating minor node, error code:%d", 460 status); 461 462 goto fail; 463 } 464 465 mutex_enter(&usbvcp->usbvc_mutex); 466 usbvc_init_lists(usbvcp); 467 468 usbvcp->usbvc_default_ph = usbvcp->usbvc_reg->dev_default_ph; 469 470 /* Put online before PM init as can get power managed afterward. */ 471 usbvcp->usbvc_dev_state = USB_DEV_ONLINE; 472 mutex_exit(&usbvcp->usbvc_mutex); 473 474 /* initialize power management */ 475 usbvc_init_power_mgmt(usbvcp); 476 477 if ((status = usbvc_parse_ctrl_if(usbvcp)) != USB_SUCCESS) { 478 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 479 "usbvc_attach: parse ctrl interface fail, error code:%d", 480 status); 481 482 goto fail; 483 } 484 if ((status = usbvc_parse_stream_ifs(usbvcp)) != USB_SUCCESS) { 485 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 486 "usbvc_attach: parse stream interfaces fail, error code:%d", 487 status); 488 489 goto fail; 490 } 491 (void) usbvc_set_default_stream_fmt(usbvcp); 492 493 /* Register for events */ 494 if ((status = usb_register_event_cbs(dip, &usbvc_events, 0)) != 495 USB_SUCCESS) { 496 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 497 "usbvc_attach: register_event_cbs failed, error code:%d", 498 status); 499 500 goto fail; 501 } 502 503 /* Report device */ 504 ddi_report_dev(dip); 505 506 return (DDI_SUCCESS); 507 508 fail: 509 if (usbvcp) { 510 usbvc_cleanup(dip, usbvcp); 511 } 512 513 return (DDI_FAILURE); 514 } 515 516 517 /* 518 * usbvc_detach: 519 * detach or suspend driver instance 520 * 521 * Note: in detach, only contention threads is from pm and disconnnect. 522 */ 523 static int 524 usbvc_detach(dev_info_t *dip, ddi_detach_cmd_t cmd) 525 { 526 int instance = ddi_get_instance(dip); 527 usbvc_state_t *usbvcp = ddi_get_soft_state(usbvc_statep, instance); 528 int rval = USB_FAILURE; 529 530 switch (cmd) { 531 case DDI_DETACH: 532 mutex_enter(&usbvcp->usbvc_mutex); 533 ASSERT((usbvcp->usbvc_drv_state & USBVC_OPEN) == 0); 534 mutex_exit(&usbvcp->usbvc_mutex); 535 536 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 537 "usbvc_detach: enter for detach"); 538 539 usbvc_cleanup(dip, usbvcp); 540 rval = USB_SUCCESS; 541 542 break; 543 case DDI_SUSPEND: 544 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 545 "usbvc_detach: enter for suspend"); 546 547 usbvc_cpr_suspend(dip); 548 rval = USB_SUCCESS; 549 550 break; 551 default: 552 553 break; 554 } 555 556 return ((rval == USB_SUCCESS) ? DDI_SUCCESS : DDI_FAILURE); 557 } 558 559 560 /* 561 * usbvc_cleanup: 562 * clean up the driver state for detach 563 */ 564 static void 565 usbvc_cleanup(dev_info_t *dip, usbvc_state_t *usbvcp) 566 { 567 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 568 "Cleanup: enter"); 569 570 if (usbvcp->usbvc_locks_initialized) { 571 572 /* This must be done 1st to prevent more events from coming. */ 573 usb_unregister_event_cbs(dip, &usbvc_events); 574 575 /* 576 * At this point, no new activity can be initiated. The driver 577 * has disabled hotplug callbacks. The Solaris framework has 578 * disabled new opens on a device being detached, and does not 579 * allow detaching an open device. 580 * 581 * The following ensures that all driver activity has drained. 582 */ 583 mutex_enter(&usbvcp->usbvc_mutex); 584 (void) usbvc_serialize_access(usbvcp, USBVC_SER_NOSIG); 585 usbvc_release_access(usbvcp); 586 mutex_exit(&usbvcp->usbvc_mutex); 587 588 /* All device activity has died down. */ 589 usbvc_destroy_power_mgmt(usbvcp); 590 mutex_enter(&usbvcp->usbvc_mutex); 591 usbvc_fini_lists(usbvcp); 592 mutex_exit(&usbvcp->usbvc_mutex); 593 594 ddi_remove_minor_node(dip, NULL); 595 usbvc_fini_sync_objs(usbvcp); 596 } 597 598 usb_client_detach(dip, usbvcp->usbvc_reg); 599 usb_free_log_hdl(usbvcp->usbvc_log_handle); 600 ddi_soft_state_free(usbvc_statep, ddi_get_instance(dip)); 601 ddi_prop_remove_all(dip); 602 } 603 604 605 /*ARGSUSED*/ 606 static int 607 usbvc_open(dev_t *devp, int flag, int otyp, cred_t *cred_p) 608 { 609 usbvc_state_t *usbvcp = 610 ddi_get_soft_state(usbvc_statep, getminor(*devp)); 611 612 if (usbvcp == NULL) { 613 614 return (ENXIO); 615 } 616 617 /* 618 * Keep it simple: one client at a time. 619 * Exclusive open only 620 */ 621 mutex_enter(&usbvcp->usbvc_mutex); 622 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 623 "usbvc_open: enter, dev_stat=%d", usbvcp->usbvc_dev_state); 624 625 if (usbvcp->usbvc_dev_state == USB_DEV_DISCONNECTED) { 626 mutex_exit(&usbvcp->usbvc_mutex); 627 628 return (ENODEV); 629 } 630 if (usbvcp->usbvc_dev_state == USB_DEV_SUSPENDED) { 631 mutex_exit(&usbvcp->usbvc_mutex); 632 633 return (EIO); 634 } 635 if ((usbvcp->usbvc_drv_state & USBVC_OPEN) != 0) { 636 mutex_exit(&usbvcp->usbvc_mutex); 637 638 return (EBUSY); 639 } 640 usbvcp->usbvc_drv_state |= USBVC_OPEN; 641 642 if (usbvc_serialize_access(usbvcp, USBVC_SER_SIG) == 0) { 643 usbvcp->usbvc_drv_state &= ~USBVC_OPEN; 644 usbvcp->usbvc_serial_inuse = B_FALSE; 645 mutex_exit(&usbvcp->usbvc_mutex); 646 647 return (EINTR); 648 } 649 650 /* raise power */ 651 usbvc_pm_busy_component(usbvcp); 652 if (usbvcp->usbvc_pm->usbvc_current_power != USB_DEV_OS_FULL_PWR) { 653 usbvcp->usbvc_pm->usbvc_raise_power = B_TRUE; 654 mutex_exit(&usbvcp->usbvc_mutex); 655 (void) pm_raise_power(usbvcp->usbvc_dip, 656 0, USB_DEV_OS_FULL_PWR); 657 mutex_enter(&usbvcp->usbvc_mutex); 658 usbvcp->usbvc_pm->usbvc_raise_power = B_FALSE; 659 } 660 661 /* Device is idle until it is used. */ 662 usbvc_release_access(usbvcp); 663 mutex_exit(&usbvcp->usbvc_mutex); 664 665 USB_DPRINTF_L4(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 666 "usbvc_open: end."); 667 668 return (0); 669 } 670 671 672 /*ARGSUSED*/ 673 static int 674 usbvc_close(dev_t dev, int flag, int otyp, cred_t *cred_p) 675 { 676 usbvc_stream_if_t *strm_if; 677 int if_num; 678 usbvc_state_t *usbvcp = 679 ddi_get_soft_state(usbvc_statep, getminor(dev)); 680 681 USB_DPRINTF_L4(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 682 "close: enter"); 683 684 mutex_enter(&usbvcp->usbvc_mutex); 685 (void) usbvc_serialize_access(usbvcp, USBVC_SER_NOSIG); 686 mutex_exit(&usbvcp->usbvc_mutex); 687 688 /* Perform device session cleanup here. */ 689 690 USB_DPRINTF_L3(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 691 "close: cleaning up..."); 692 693 /* 694 * USBA automatically flushes/resets active non-default pipes 695 * when they are closed. We can't reset default pipe, but we 696 * can wait for all requests on it from this dip to drain. 697 */ 698 (void) usb_pipe_drain_reqs(usbvcp->usbvc_dip, 699 usbvcp->usbvc_reg->dev_default_ph, 0, 700 USB_FLAGS_SLEEP, NULL, 0); 701 702 mutex_enter(&usbvcp->usbvc_mutex); 703 strm_if = usbvcp->usbvc_curr_strm; 704 if (strm_if->start_polling == 1) { 705 mutex_exit(&usbvcp->usbvc_mutex); 706 usb_pipe_stop_isoc_polling(strm_if->datain_ph, USB_FLAGS_SLEEP); 707 mutex_enter(&usbvcp->usbvc_mutex); 708 strm_if->start_polling = 0; 709 } 710 strm_if->stream_on = 0; 711 712 usbvc_close_isoc_pipe(usbvcp, strm_if); 713 if_num = strm_if->if_descr->if_alt->altif_descr.bInterfaceNumber; 714 mutex_exit(&usbvcp->usbvc_mutex); 715 716 /* reset alternate to the default one. */ 717 (void) usb_set_alt_if(usbvcp->usbvc_dip, if_num, 0, 718 USB_FLAGS_SLEEP, NULL, NULL); 719 mutex_enter(&usbvcp->usbvc_mutex); 720 721 usbvc_free_read_bufs(usbvcp, strm_if); 722 723 /* reset the desired read buf number to the default value on close */ 724 strm_if->buf_read_num = USBVC_DEFAULT_READ_BUF_NUM; 725 726 usbvc_free_map_bufs(usbvcp, strm_if); 727 usbvcp->usbvc_drv_state &= ~USBVC_OPEN; 728 729 usbvc_release_access(usbvcp); 730 usbvc_pm_idle_component(usbvcp); 731 mutex_exit(&usbvcp->usbvc_mutex); 732 733 return (0); 734 } 735 736 737 /*ARGSUSED*/ 738 /* Read isoc data from usb video devices */ 739 static int 740 usbvc_read(dev_t dev, struct uio *uio_p, cred_t *cred_p) 741 { 742 int rval; 743 usbvc_stream_if_t *strm_if; 744 usbvc_state_t *usbvcp = 745 ddi_get_soft_state(usbvc_statep, getminor(dev)); 746 747 USB_DPRINTF_L4(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 748 "usbvc_read: enter"); 749 mutex_enter(&usbvcp->usbvc_mutex); 750 if (usbvcp->usbvc_dev_state != USB_DEV_ONLINE) { 751 USB_DPRINTF_L2(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 752 "usbvc_read: Device is not available," 753 " dev_stat=%d", usbvcp->usbvc_dev_state); 754 mutex_exit(&usbvcp->usbvc_mutex); 755 756 return (EFAULT); 757 } 758 if ((uio_p->uio_fmode & (FNDELAY|FNONBLOCK)) && 759 (usbvcp->usbvc_serial_inuse != B_FALSE)) { 760 USB_DPRINTF_L2(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 761 "usbvc_read: non-blocking read, return fail."); 762 mutex_exit(&usbvcp->usbvc_mutex); 763 764 return (EAGAIN); 765 } 766 if (usbvc_serialize_access(usbvcp, USBVC_SER_SIG) <= 0) { 767 USB_DPRINTF_L2(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 768 "usbvc_read: serialize_access failed."); 769 rval = EFAULT; 770 771 goto fail; 772 } 773 774 /* Get the first stream interface */ 775 strm_if = usbvcp->usbvc_curr_strm; 776 if (!strm_if) { 777 USB_DPRINTF_L2(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 778 "usbvc_read: no stream interfaces"); 779 rval = EFAULT; 780 781 goto fail; 782 } 783 784 /* 785 * If it is the first read, open isoc pipe and allocate bufs for 786 * read I/O method. 787 */ 788 if (strm_if->datain_ph == NULL) { 789 if (usbvc_open_isoc_pipe(usbvcp, strm_if) != USB_SUCCESS) { 790 USB_DPRINTF_L2(PRINT_MASK_READ, 791 usbvcp->usbvc_log_handle, 792 "usbvc_read: first read, open pipe fail"); 793 rval = EFAULT; 794 795 goto fail; 796 } 797 if (usbvc_alloc_read_bufs(usbvcp, strm_if) != USB_SUCCESS) { 798 USB_DPRINTF_L2(PRINT_MASK_READ, 799 usbvcp->usbvc_log_handle, 800 "usbvc_read: allocate rw bufs fail"); 801 rval = EFAULT; 802 803 goto fail; 804 } 805 } 806 807 /* start polling if it is not started yet */ 808 if (strm_if->start_polling != 1) { 809 if (usbvc_start_isoc_polling(usbvcp, strm_if, NULL) != 810 USB_SUCCESS) { 811 USB_DPRINTF_L2(PRINT_MASK_READ, 812 usbvcp->usbvc_log_handle, 813 "usbvc_read: usbvc_start_isoc_polling fail"); 814 rval = EFAULT; 815 816 goto fail; 817 } 818 strm_if->start_polling = 1; 819 } 820 821 if (list_is_empty(&strm_if->buf_read.uv_buf_done)) { 822 USB_DPRINTF_L3(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 823 "usbvc_read: full buf list is empty."); 824 825 if (uio_p->uio_fmode & (FNDELAY | FNONBLOCK)) { 826 USB_DPRINTF_L2(PRINT_MASK_READ, 827 usbvcp->usbvc_log_handle, "usbvc_read: fail, " 828 "non-blocking read, done buf is empty."); 829 rval = EAGAIN; 830 831 goto fail; 832 } 833 834 /* no available buffers, block here */ 835 while (list_is_empty(&strm_if->buf_read.uv_buf_done)) { 836 USB_DPRINTF_L3(PRINT_MASK_READ, 837 usbvcp->usbvc_log_handle, 838 "usbvc_read: wait for done buf"); 839 if (cv_wait_sig(&usbvcp->usbvc_read_cv, 840 &usbvcp->usbvc_mutex) <= 0) { 841 /* no done buf and cv is signaled */ 842 rval = EINTR; 843 844 goto fail; 845 } 846 if (usbvcp->usbvc_dev_state != USB_DEV_ONLINE) { 847 848 /* Device is disconnected. */ 849 rval = EINTR; 850 851 goto fail; 852 } 853 } 854 855 } 856 857 mutex_exit(&usbvcp->usbvc_mutex); 858 rval = physio(usbvc_strategy, NULL, dev, B_READ, 859 usbvc_minphys, uio_p); 860 861 mutex_enter(&usbvcp->usbvc_mutex); 862 usbvc_release_access(usbvcp); 863 mutex_exit(&usbvcp->usbvc_mutex); 864 865 return (rval); 866 867 fail: 868 usbvc_release_access(usbvcp); 869 mutex_exit(&usbvcp->usbvc_mutex); 870 871 return (rval); 872 } 873 874 875 /* 876 * strategy: 877 * Called through physio to setup and start the transfer. 878 */ 879 static int 880 usbvc_strategy(struct buf *bp) 881 { 882 usbvc_state_t *usbvcp = ddi_get_soft_state(usbvc_statep, 883 getminor(bp->b_edev)); 884 885 USB_DPRINTF_L4(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 886 "usbvc_strategy: enter"); 887 888 /* 889 * Initialize residual count here in case transfer doesn't even get 890 * started. 891 */ 892 bp->b_resid = bp->b_bcount; 893 894 /* Needed as this is a character driver. */ 895 if (bp->b_flags & (B_PHYS | B_PAGEIO)) { 896 bp_mapin(bp); 897 } 898 899 mutex_enter(&usbvcp->usbvc_mutex); 900 901 /* Make sure device has not been disconnected. */ 902 if (usbvcp->usbvc_dev_state != USB_DEV_ONLINE) { 903 USB_DPRINTF_L2(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 904 "usbvc_strategy: device can't be accessed"); 905 mutex_exit(&usbvcp->usbvc_mutex); 906 907 goto fail; 908 } 909 910 /* read data from uv_buf_done list */ 911 if (usbvc_read_buf(usbvcp, bp) != USB_SUCCESS) { 912 USB_DPRINTF_L2(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 913 "usbvc_strategy: read full buf list fail"); 914 mutex_exit(&usbvcp->usbvc_mutex); 915 916 goto fail; 917 } 918 919 mutex_exit(&usbvcp->usbvc_mutex); 920 921 biodone(bp); 922 923 return (0); 924 925 fail: 926 USB_DPRINTF_L2(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 927 "usbvc_strategy: strategy fail"); 928 bp->b_private = NULL; 929 930 bioerror(bp, EIO); 931 biodone(bp); 932 933 return (0); 934 } 935 936 937 static void 938 usbvc_minphys(struct buf *bp) 939 { 940 dev_t dev = bp->b_edev; 941 usbvc_stream_if_t *strm_if; 942 uint32_t maxsize; 943 usbvc_state_t *usbvcp = 944 ddi_get_soft_state(usbvc_statep, getminor(dev)); 945 946 mutex_enter(&usbvcp->usbvc_mutex); 947 strm_if = usbvcp->usbvc_curr_strm; 948 LE_TO_UINT32(strm_if->ctrl_pc.dwMaxVideoFrameSize, 0, maxsize); 949 USB_DPRINTF_L3(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 950 "usbvc_minphys: max read size=%d", maxsize); 951 952 if (bp->b_bcount > maxsize) { 953 bp->b_bcount = maxsize; 954 } 955 mutex_exit(&usbvcp->usbvc_mutex); 956 } 957 958 959 /* 960 * ioctl entry. 961 */ 962 /*ARGSUSED*/ 963 static int 964 usbvc_ioctl(dev_t dev, int cmd, intptr_t arg, 965 int mode, cred_t *cred_p, int *rval_p) 966 { 967 int rv = 0; 968 usbvc_state_t *usbvcp = 969 ddi_get_soft_state(usbvc_statep, getminor(dev)); 970 971 if (usbvcp == NULL) { 972 973 return (ENXIO); 974 } 975 USB_DPRINTF_L4(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 976 "ioctl enter, cmd=%x", cmd); 977 mutex_enter(&usbvcp->usbvc_mutex); 978 if (usbvcp->usbvc_dev_state != USB_DEV_ONLINE) { 979 USB_DPRINTF_L2(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 980 "ioctl: Device is not online," 981 " dev_stat=%d", usbvcp->usbvc_dev_state); 982 mutex_exit(&usbvcp->usbvc_mutex); 983 984 return (EFAULT); 985 } 986 if (usbvc_serialize_access(usbvcp, USBVC_SER_SIG) <= 0) { 987 usbvcp->usbvc_serial_inuse = B_FALSE; 988 mutex_exit(&usbvcp->usbvc_mutex); 989 USB_DPRINTF_L2(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 990 "serialize_access failed."); 991 992 return (EFAULT); 993 } 994 mutex_exit(&usbvcp->usbvc_mutex); 995 996 rv = usbvc_v4l2_ioctl(usbvcp, cmd, arg, mode); 997 998 mutex_enter(&usbvcp->usbvc_mutex); 999 usbvc_release_access(usbvcp); 1000 mutex_exit(&usbvcp->usbvc_mutex); 1001 1002 USB_DPRINTF_L4(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 1003 "usbvc_ioctl exit"); 1004 1005 return (rv); 1006 } 1007 1008 1009 /* Entry for mmap system call */ 1010 static int 1011 usbvc_devmap(dev_t dev, devmap_cookie_t handle, offset_t off, 1012 size_t len, size_t *maplen, uint_t model) 1013 { 1014 usbvc_state_t *usbvcp; 1015 int error, i; 1016 usbvc_buf_t *buf = NULL; 1017 usbvc_stream_if_t *strm_if; 1018 usbvc_buf_grp_t *bufgrp; 1019 1020 usbvcp = ddi_get_soft_state(usbvc_statep, getminor(dev)); 1021 if (usbvcp == NULL) { 1022 USB_DPRINTF_L2(PRINT_MASK_DEVMAP, usbvcp->usbvc_log_handle, 1023 "usbvc_devmap: usbvcp == NULL"); 1024 1025 return (ENXIO); 1026 } 1027 1028 USB_DPRINTF_L3(PRINT_MASK_DEVMAP, usbvcp->usbvc_log_handle, 1029 "devmap: memory map for instance(%d), off=%llx," 1030 "len=%ld, maplen=%ld, model=%d", getminor(dev), off, 1031 len, *maplen, model); 1032 1033 mutex_enter(&usbvcp->usbvc_mutex); 1034 (void) usbvc_serialize_access(usbvcp, USBVC_SER_NOSIG); 1035 strm_if = usbvcp->usbvc_curr_strm; 1036 if (!strm_if) { 1037 USB_DPRINTF_L2(PRINT_MASK_DEVMAP, usbvcp->usbvc_log_handle, 1038 "usbvc_devmap: No current strm if"); 1039 mutex_exit(&usbvcp->usbvc_mutex); 1040 1041 return (ENXIO); 1042 } 1043 bufgrp = &strm_if->buf_map; 1044 for (i = 0; i < bufgrp->buf_cnt; i++) { 1045 if (bufgrp->buf_head[i].v4l2_buf.m.offset == off) { 1046 buf = &bufgrp->buf_head[i]; 1047 1048 break; 1049 } 1050 } 1051 USB_DPRINTF_L3(PRINT_MASK_DEVMAP, usbvcp->usbvc_log_handle, 1052 "usbvc_devmap: idx=%d", i); 1053 if (buf == NULL) { 1054 mutex_exit(&usbvcp->usbvc_mutex); 1055 1056 return (ENXIO); 1057 } 1058 /* 1059 * round up len to a multiple of a page size, according to chapter 1060 * 10 of "writing device drivers" 1061 */ 1062 len = ptob(btopr(len)); 1063 if (len > ptob(btopr(buf->len))) { 1064 USB_DPRINTF_L2(PRINT_MASK_DEVMAP, usbvcp->usbvc_log_handle, 1065 "usbvc_devmap: len=0x%lx", len); 1066 mutex_exit(&usbvcp->usbvc_mutex); 1067 1068 return (ENXIO); 1069 } 1070 mutex_exit(&usbvcp->usbvc_mutex); 1071 1072 error = devmap_umem_setup(handle, usbvcp->usbvc_dip, NULL, 1073 buf->umem_cookie, off, len, PROT_ALL, DEVMAP_DEFAULTS, NULL); 1074 mutex_enter(&usbvcp->usbvc_mutex); 1075 *maplen = len; 1076 if (error == 0 && buf->status == USBVC_BUF_INIT) { 1077 buf->status = USBVC_BUF_MAPPED; 1078 } else { 1079 USB_DPRINTF_L3(PRINT_MASK_DEVMAP, usbvcp->usbvc_log_handle, 1080 "usbvc_devmap: devmap_umem_setup, err=%d", error); 1081 } 1082 1083 (void) usbvc_release_access(usbvcp); 1084 mutex_exit(&usbvcp->usbvc_mutex); 1085 1086 return (error); 1087 } 1088 1089 /* 1090 * pm and cpr 1091 */ 1092 1093 /* 1094 * usbvc_power : 1095 * Power entry point, the workhorse behind pm_raise_power, pm_lower_power, 1096 * usb_req_raise_power and usb_req_lower_power. 1097 */ 1098 /* ARGSUSED */ 1099 static int 1100 usbvc_power(dev_info_t *dip, int comp, int level) 1101 { 1102 usbvc_state_t *usbvcp; 1103 usbvc_power_t *pm; 1104 int rval = USB_FAILURE; 1105 1106 usbvcp = ddi_get_soft_state(usbvc_statep, ddi_get_instance(dip)); 1107 mutex_enter(&usbvcp->usbvc_mutex); 1108 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1109 "usbvc_power: enter: level = %d, dev_state: %x", 1110 level, usbvcp->usbvc_dev_state); 1111 1112 if (usbvcp->usbvc_pm == NULL) { 1113 1114 goto done; 1115 } 1116 1117 pm = usbvcp->usbvc_pm; 1118 1119 /* Check if we are transitioning to a legal power level */ 1120 if (USB_DEV_PWRSTATE_OK(pm->usbvc_pwr_states, level)) { 1121 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 1122 "usbvc_power: illegal power level = %d " 1123 "pwr_states: %x", level, pm->usbvc_pwr_states); 1124 1125 goto done; 1126 } 1127 /* 1128 * if we are about to raise power and asked to lower power, fail 1129 */ 1130 if (pm->usbvc_raise_power && (level < (int)pm->usbvc_current_power)) { 1131 1132 goto done; 1133 } 1134 switch (level) { 1135 case USB_DEV_OS_PWR_OFF : 1136 rval = usbvc_pwrlvl0(usbvcp); 1137 1138 break; 1139 case USB_DEV_OS_PWR_1 : 1140 rval = usbvc_pwrlvl1(usbvcp); 1141 1142 break; 1143 case USB_DEV_OS_PWR_2 : 1144 rval = usbvc_pwrlvl2(usbvcp); 1145 1146 break; 1147 case USB_DEV_OS_FULL_PWR : 1148 rval = usbvc_pwrlvl3(usbvcp); 1149 1150 break; 1151 } 1152 1153 done: 1154 mutex_exit(&usbvcp->usbvc_mutex); 1155 1156 return ((rval == USB_SUCCESS) ? DDI_SUCCESS : DDI_FAILURE); 1157 } 1158 1159 1160 /* 1161 * usbvc_init_power_mgmt: 1162 * Initialize power management and remote wakeup functionality. 1163 * No mutex is necessary in this function as it's called only by attach. 1164 */ 1165 static void 1166 usbvc_init_power_mgmt(usbvc_state_t *usbvcp) 1167 { 1168 usbvc_power_t *usbvcpm; 1169 uint_t pwr_states; 1170 1171 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1172 "init_power_mgmt enter"); 1173 1174 /* Allocate the state structure */ 1175 usbvcpm = kmem_zalloc(sizeof (usbvc_power_t), KM_SLEEP); 1176 mutex_enter(&usbvcp->usbvc_mutex); 1177 usbvcp->usbvc_pm = usbvcpm; 1178 usbvcpm->usbvc_state = usbvcp; 1179 usbvcpm->usbvc_pm_capabilities = 0; 1180 usbvcpm->usbvc_current_power = USB_DEV_OS_FULL_PWR; 1181 mutex_exit(&usbvcp->usbvc_mutex); 1182 1183 if (usb_create_pm_components(usbvcp->usbvc_dip, &pwr_states) == 1184 USB_SUCCESS) { 1185 USB_DPRINTF_L2(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1186 "usbvc_init_power_mgmt: created PM components"); 1187 1188 if (usb_handle_remote_wakeup(usbvcp->usbvc_dip, 1189 USB_REMOTE_WAKEUP_ENABLE) == USB_SUCCESS) { 1190 usbvcpm->usbvc_wakeup_enabled = 1; 1191 } else { 1192 USB_DPRINTF_L2(PRINT_MASK_ATTA, 1193 usbvcp->usbvc_log_handle, "usbvc_init_power_mgmt:" 1194 " remote wakeup not supported"); 1195 } 1196 1197 mutex_enter(&usbvcp->usbvc_mutex); 1198 usbvcpm->usbvc_pwr_states = (uint8_t)pwr_states; 1199 usbvc_pm_busy_component(usbvcp); 1200 usbvcpm->usbvc_raise_power = B_TRUE; 1201 mutex_exit(&usbvcp->usbvc_mutex); 1202 1203 (void) pm_raise_power( 1204 usbvcp->usbvc_dip, 0, USB_DEV_OS_FULL_PWR); 1205 1206 mutex_enter(&usbvcp->usbvc_mutex); 1207 usbvcpm->usbvc_raise_power = B_FALSE; 1208 usbvc_pm_idle_component(usbvcp); 1209 mutex_exit(&usbvcp->usbvc_mutex); 1210 1211 } 1212 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1213 "usbvc_init_power_mgmt: end"); 1214 } 1215 1216 1217 /* 1218 * usbvc_destroy_power_mgmt: 1219 * Shut down and destroy power management and remote wakeup functionality. 1220 */ 1221 static void 1222 usbvc_destroy_power_mgmt(usbvc_state_t *usbvcp) 1223 { 1224 usbvc_power_t *pm; 1225 int rval; 1226 1227 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1228 "destroy_power_mgmt enter"); 1229 mutex_enter(&usbvcp->usbvc_mutex); 1230 pm = usbvcp->usbvc_pm; 1231 if (pm && (usbvcp->usbvc_dev_state != USB_DEV_DISCONNECTED)) { 1232 1233 usbvc_pm_busy_component(usbvcp); 1234 if (pm->usbvc_wakeup_enabled) { 1235 pm->usbvc_raise_power = B_TRUE; 1236 mutex_exit(&usbvcp->usbvc_mutex); 1237 1238 /* First bring the device to full power */ 1239 (void) pm_raise_power(usbvcp->usbvc_dip, 0, 1240 USB_DEV_OS_FULL_PWR); 1241 if ((rval = usb_handle_remote_wakeup( 1242 usbvcp->usbvc_dip, 1243 USB_REMOTE_WAKEUP_DISABLE)) != 1244 USB_SUCCESS) { 1245 USB_DPRINTF_L2(PRINT_MASK_ATTA, 1246 usbvcp->usbvc_log_handle, 1247 "usbvc_destroy_power_mgmt: " 1248 "Error disabling rmt wakeup: rval = %d", 1249 rval); 1250 } 1251 mutex_enter(&usbvcp->usbvc_mutex); 1252 pm->usbvc_raise_power = B_FALSE; 1253 1254 } 1255 mutex_exit(&usbvcp->usbvc_mutex); 1256 1257 /* 1258 * Since remote wakeup is disabled now, 1259 * no one can raise power 1260 * and get to device once power is lowered here. 1261 */ 1262 (void) pm_lower_power(usbvcp->usbvc_dip, 0, USB_DEV_OS_PWR_OFF); 1263 mutex_enter(&usbvcp->usbvc_mutex); 1264 usbvc_pm_idle_component(usbvcp); 1265 } 1266 1267 if (pm) { 1268 kmem_free(pm, sizeof (usbvc_power_t)); 1269 usbvcp->usbvc_pm = NULL; 1270 } 1271 mutex_exit(&usbvcp->usbvc_mutex); 1272 } 1273 1274 1275 static void 1276 usbvc_pm_busy_component(usbvc_state_t *usbvcp) 1277 { 1278 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 1279 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1280 "usbvc_pm_busy_component: enter"); 1281 1282 usbvcp->usbvc_pm->usbvc_pm_busy++; 1283 mutex_exit(&usbvcp->usbvc_mutex); 1284 1285 if (pm_busy_component(usbvcp->usbvc_dip, 0) != 1286 DDI_SUCCESS) { 1287 mutex_enter(&usbvcp->usbvc_mutex); 1288 USB_DPRINTF_L2(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1289 "usbvc_pm_busy_component: pm busy fail, usbvc_pm_busy=%d", 1290 usbvcp->usbvc_pm->usbvc_pm_busy); 1291 1292 usbvcp->usbvc_pm->usbvc_pm_busy--; 1293 mutex_exit(&usbvcp->usbvc_mutex); 1294 } 1295 mutex_enter(&usbvcp->usbvc_mutex); 1296 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1297 "usbvc_pm_busy_component: exit"); 1298 } 1299 1300 1301 static void 1302 usbvc_pm_idle_component(usbvc_state_t *usbvcp) 1303 { 1304 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 1305 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1306 "usbvc_pm_idle_component: enter"); 1307 1308 if (usbvcp->usbvc_pm != NULL) { 1309 mutex_exit(&usbvcp->usbvc_mutex); 1310 if (pm_idle_component(usbvcp->usbvc_dip, 0) == 1311 DDI_SUCCESS) { 1312 mutex_enter(&usbvcp->usbvc_mutex); 1313 ASSERT(usbvcp->usbvc_pm->usbvc_pm_busy > 0); 1314 usbvcp->usbvc_pm->usbvc_pm_busy--; 1315 mutex_exit(&usbvcp->usbvc_mutex); 1316 } 1317 mutex_enter(&usbvcp->usbvc_mutex); 1318 USB_DPRINTF_L2(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1319 "usbvc_pm_idle_component: %d", 1320 usbvcp->usbvc_pm->usbvc_pm_busy); 1321 } 1322 } 1323 1324 1325 /* 1326 * usbvc_pwrlvl0: 1327 * Functions to handle power transition for OS levels 0 -> 3 1328 */ 1329 static int 1330 usbvc_pwrlvl0(usbvc_state_t *usbvcp) 1331 { 1332 int rval; 1333 1334 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1335 "usbvc_pwrlvl0, dev_state: %x", usbvcp->usbvc_dev_state); 1336 1337 switch (usbvcp->usbvc_dev_state) { 1338 case USB_DEV_ONLINE: 1339 /* Deny the powerdown request if the device is busy */ 1340 if (usbvcp->usbvc_pm->usbvc_pm_busy != 0) { 1341 USB_DPRINTF_L2(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1342 "usbvc_pwrlvl0: usbvc_pm_busy"); 1343 1344 return (USB_FAILURE); 1345 } 1346 1347 /* Issue USB D3 command to the device here */ 1348 rval = usb_set_device_pwrlvl3(usbvcp->usbvc_dip); 1349 ASSERT(rval == USB_SUCCESS); 1350 1351 usbvcp->usbvc_dev_state = USB_DEV_PWRED_DOWN; 1352 usbvcp->usbvc_pm->usbvc_current_power = USB_DEV_OS_PWR_OFF; 1353 1354 /* FALLTHRU */ 1355 case USB_DEV_DISCONNECTED: 1356 case USB_DEV_SUSPENDED: 1357 /* allow a disconnect/cpr'ed device to go to lower power */ 1358 1359 return (USB_SUCCESS); 1360 case USB_DEV_PWRED_DOWN: 1361 default: 1362 USB_DPRINTF_L2(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1363 "usbvc_pwrlvl0: illegal dev state"); 1364 1365 return (USB_FAILURE); 1366 } 1367 } 1368 1369 1370 /* 1371 * usbvc_pwrlvl1: 1372 * Functions to handle power transition to OS levels -> 2 1373 */ 1374 static int 1375 usbvc_pwrlvl1(usbvc_state_t *usbvcp) 1376 { 1377 int rval; 1378 1379 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1380 "usbvc_pwrlvl1"); 1381 1382 /* Issue USB D2 command to the device here */ 1383 rval = usb_set_device_pwrlvl2(usbvcp->usbvc_dip); 1384 ASSERT(rval == USB_SUCCESS); 1385 1386 return (USB_FAILURE); 1387 } 1388 1389 1390 /* 1391 * usbvc_pwrlvl2: 1392 * Functions to handle power transition to OS levels -> 1 1393 */ 1394 static int 1395 usbvc_pwrlvl2(usbvc_state_t *usbvcp) 1396 { 1397 int rval; 1398 1399 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1400 "usbvc_pwrlvl2"); 1401 1402 /* Issue USB D1 command to the device here */ 1403 rval = usb_set_device_pwrlvl1(usbvcp->usbvc_dip); 1404 ASSERT(rval == USB_SUCCESS); 1405 1406 return (USB_FAILURE); 1407 } 1408 1409 1410 /* 1411 * usbvc_pwrlvl3: 1412 * Functions to handle power transition to OS level -> 0 1413 */ 1414 static int 1415 usbvc_pwrlvl3(usbvc_state_t *usbvcp) 1416 { 1417 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1418 "usbvc_pwrlvl3, dev_stat=%d", usbvcp->usbvc_dev_state); 1419 1420 switch (usbvcp->usbvc_dev_state) { 1421 case USB_DEV_PWRED_DOWN: 1422 /* Issue USB D0 command to the device here */ 1423 (void) usb_set_device_pwrlvl0(usbvcp->usbvc_dip); 1424 1425 usbvcp->usbvc_dev_state = USB_DEV_ONLINE; 1426 usbvcp->usbvc_pm->usbvc_current_power = 1427 USB_DEV_OS_FULL_PWR; 1428 1429 /* FALLTHRU */ 1430 case USB_DEV_ONLINE: 1431 /* we are already in full power */ 1432 /* FALLTHRU */ 1433 case USB_DEV_DISCONNECTED: 1434 case USB_DEV_SUSPENDED: 1435 /* 1436 * PM framework tries to put us in full power 1437 * during system shutdown. If we are disconnected/cpr'ed 1438 * return success anyways 1439 */ 1440 1441 return (USB_SUCCESS); 1442 default: 1443 USB_DPRINTF_L2(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1444 "usbvc_pwrlvl3: illegal dev state"); 1445 1446 return (USB_FAILURE); 1447 } 1448 } 1449 1450 1451 /* 1452 * usbvc_cpr_suspend: 1453 * Clean up device. 1454 * Wait for any IO to finish, then close pipes. 1455 * Quiesce device. 1456 */ 1457 static void 1458 usbvc_cpr_suspend(dev_info_t *dip) 1459 { 1460 int instance = ddi_get_instance(dip); 1461 usbvc_state_t *usbvcp = ddi_get_soft_state(usbvc_statep, instance); 1462 1463 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1464 "usbvc_cpr_suspend enter"); 1465 1466 mutex_enter(&usbvcp->usbvc_mutex); 1467 1468 /* 1469 * Set dev_state to suspended so other driver threads don't start any 1470 * new I/O. 1471 */ 1472 usbvcp->usbvc_dev_state = USB_DEV_SUSPENDED; 1473 1474 mutex_exit(&usbvcp->usbvc_mutex); 1475 1476 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 1477 "usbvc_cpr_suspend: return"); 1478 } 1479 1480 1481 /* 1482 * If the polling has been stopped due to some exceptional errors, 1483 * we reconfigure the device and start polling again. Only for S/R 1484 * resume or hotplug reconnect operations. 1485 */ 1486 static int 1487 usbvc_resume_operation(usbvc_state_t *usbvcp) 1488 { 1489 usbvc_stream_if_t *strm_if; 1490 int rv = USB_SUCCESS; 1491 1492 USB_DPRINTF_L4(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 1493 "usbvc_resume_operation: enter"); 1494 1495 mutex_enter(&usbvcp->usbvc_mutex); 1496 strm_if = usbvcp->usbvc_curr_strm; 1497 if (!strm_if) { 1498 mutex_exit(&usbvcp->usbvc_mutex); 1499 rv = USB_FAILURE; 1500 1501 return (rv); 1502 } 1503 1504 /* 1505 * 1) if application has not started STREAMON ioctl yet, 1506 * just return 1507 * 2) if application use READ mode, return immediately 1508 */ 1509 if (strm_if->stream_on == 0) { 1510 mutex_exit(&usbvcp->usbvc_mutex); 1511 1512 return (rv); 1513 } 1514 1515 /* isoc pipe is expected to be opened already if (stream_on==1) */ 1516 if (!strm_if->datain_ph) { 1517 mutex_exit(&usbvcp->usbvc_mutex); 1518 rv = USB_FAILURE; 1519 1520 return (rv); 1521 } 1522 1523 mutex_exit(&usbvcp->usbvc_mutex); 1524 1525 /* first commit the parameters negotiated and saved during S_FMT */ 1526 if ((rv = usbvc_vs_set_probe_commit(usbvcp, strm_if, 1527 &strm_if->ctrl_pc, VS_COMMIT_CONTROL)) != USB_SUCCESS) { 1528 USB_DPRINTF_L2(PRINT_MASK_IOCTL, 1529 usbvcp->usbvc_log_handle, 1530 "usbvc_resume_operation: set probe failed, rv=%d", rv); 1531 1532 return (rv); 1533 } 1534 1535 mutex_enter(&usbvcp->usbvc_mutex); 1536 1537 /* Set alt interfaces, must be after probe_commit according to spec */ 1538 if ((rv = usbvc_set_alt(usbvcp, strm_if)) != USB_SUCCESS) { 1539 USB_DPRINTF_L2(PRINT_MASK_IOCTL, 1540 usbvcp->usbvc_log_handle, 1541 "usbvc_resume_operation: set alt failed"); 1542 mutex_exit(&usbvcp->usbvc_mutex); 1543 1544 return (rv); 1545 } 1546 1547 /* 1548 * The isoc polling could be stopped by isoc_exc_cb 1549 * during suspend or hotplug. Restart it. 1550 */ 1551 if (usbvc_start_isoc_polling(usbvcp, strm_if, V4L2_MEMORY_MMAP) 1552 != USB_SUCCESS) { 1553 rv = USB_FAILURE; 1554 mutex_exit(&usbvcp->usbvc_mutex); 1555 1556 return (rv); 1557 } 1558 1559 strm_if->start_polling = 1; 1560 1561 mutex_exit(&usbvcp->usbvc_mutex); 1562 1563 return (rv); 1564 } 1565 1566 /* 1567 * usbvc_cpr_resume: 1568 * 1569 * usbvc_restore_device_state marks success by putting device back online 1570 */ 1571 static void 1572 usbvc_cpr_resume(dev_info_t *dip) 1573 { 1574 int instance = ddi_get_instance(dip); 1575 usbvc_state_t *usbvcp = ddi_get_soft_state(usbvc_statep, instance); 1576 1577 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 1578 "resume: enter"); 1579 1580 /* 1581 * NOTE: A pm_raise_power in usbvc_restore_device_state will bring 1582 * the power-up state of device into synch with the system. 1583 */ 1584 mutex_enter(&usbvcp->usbvc_mutex); 1585 usbvc_restore_device_state(dip, usbvcp); 1586 mutex_exit(&usbvcp->usbvc_mutex); 1587 } 1588 1589 1590 /* 1591 * usbvc_restore_device_state: 1592 * Called during hotplug-reconnect and resume. 1593 * reenable power management 1594 * Verify the device is the same as before the disconnect/suspend. 1595 * Restore device state 1596 * Thaw any IO which was frozen. 1597 * Quiesce device. (Other routines will activate if thawed IO.) 1598 * Set device online. 1599 * Leave device disconnected if there are problems. 1600 */ 1601 static void 1602 usbvc_restore_device_state(dev_info_t *dip, usbvc_state_t *usbvcp) 1603 { 1604 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1605 "usbvc_restore_device_state: enter"); 1606 1607 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 1608 1609 ASSERT((usbvcp->usbvc_dev_state == USB_DEV_DISCONNECTED) || 1610 (usbvcp->usbvc_dev_state == USB_DEV_SUSPENDED)); 1611 1612 usbvc_pm_busy_component(usbvcp); 1613 usbvcp->usbvc_pm->usbvc_raise_power = B_TRUE; 1614 mutex_exit(&usbvcp->usbvc_mutex); 1615 (void) pm_raise_power(dip, 0, USB_DEV_OS_FULL_PWR); 1616 1617 /* Check if we are talking to the same device */ 1618 if (usb_check_same_device(dip, usbvcp->usbvc_log_handle, 1619 USB_LOG_L0, PRINT_MASK_ALL, 1620 USB_CHK_BASIC|USB_CHK_CFG, NULL) != USB_SUCCESS) { 1621 1622 goto fail; 1623 } 1624 1625 mutex_enter(&usbvcp->usbvc_mutex); 1626 usbvcp->usbvc_pm->usbvc_raise_power = B_FALSE; 1627 usbvcp->usbvc_dev_state = USB_DEV_ONLINE; 1628 mutex_exit(&usbvcp->usbvc_mutex); 1629 1630 if (usbvcp->usbvc_pm->usbvc_wakeup_enabled) { 1631 1632 /* Failure here means device disappeared again. */ 1633 if (usb_handle_remote_wakeup(dip, USB_REMOTE_WAKEUP_ENABLE) != 1634 USB_SUCCESS) { 1635 USB_DPRINTF_L2(PRINT_MASK_ATTA, 1636 usbvcp->usbvc_log_handle, 1637 "device may or may not be accessible. " 1638 "Please verify reconnection"); 1639 } 1640 } 1641 1642 if (usbvc_resume_operation(usbvcp) != USB_SUCCESS) { 1643 USB_DPRINTF_L2(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1644 "usbvc_restore_device_state: can't resume operation"); 1645 1646 goto fail; 1647 } 1648 1649 mutex_enter(&usbvcp->usbvc_mutex); 1650 1651 usbvc_pm_idle_component(usbvcp); 1652 1653 USB_DPRINTF_L4(PRINT_MASK_PM, usbvcp->usbvc_log_handle, 1654 "usbvc_restore_device_state: end"); 1655 1656 return; 1657 1658 fail: 1659 /* change the device state from suspended to disconnected */ 1660 mutex_enter(&usbvcp->usbvc_mutex); 1661 usbvcp->usbvc_dev_state = USB_DEV_DISCONNECTED; 1662 usbvc_pm_idle_component(usbvcp); 1663 } 1664 1665 1666 /* Events */ 1667 1668 /* 1669 * usbvc_disconnect_event_cb: 1670 * Called when device hotplug-removed. 1671 * Close pipes. (This does not attempt to contact device.) 1672 * Set state to DISCONNECTED 1673 */ 1674 static int 1675 usbvc_disconnect_event_cb(dev_info_t *dip) 1676 { 1677 int instance = ddi_get_instance(dip); 1678 usbvc_state_t *usbvcp = ddi_get_soft_state(usbvc_statep, instance); 1679 1680 USB_DPRINTF_L4(PRINT_MASK_HOTPLUG, usbvcp->usbvc_log_handle, 1681 "disconnect: enter"); 1682 1683 mutex_enter(&usbvcp->usbvc_mutex); 1684 /* 1685 * Save any state of device or IO in progress required by 1686 * usbvc_restore_device_state for proper device "thawing" later. 1687 */ 1688 usbvcp->usbvc_dev_state = USB_DEV_DISCONNECTED; 1689 1690 /* 1691 * wake up the read threads in case there are any threads are blocking, 1692 * after being waked up, those threads will quit fail immediately since 1693 * we have changed the dev_stat. 1694 */ 1695 if (usbvcp->usbvc_io_type == V4L2_MEMORY_MMAP) { 1696 cv_broadcast(&usbvcp->usbvc_mapio_cv); 1697 } else { 1698 cv_broadcast(&usbvcp->usbvc_read_cv); 1699 } 1700 /* Wait for the other threads to quit */ 1701 (void) usbvc_serialize_access(usbvcp, USBVC_SER_SIG); 1702 usbvc_release_access(usbvcp); 1703 mutex_exit(&usbvcp->usbvc_mutex); 1704 1705 return (USB_SUCCESS); 1706 } 1707 1708 1709 /* 1710 * usbvc_reconnect_event_cb: 1711 * Called with device hotplug-inserted 1712 * Restore state 1713 */ 1714 static int 1715 usbvc_reconnect_event_cb(dev_info_t *dip) 1716 { 1717 int instance = ddi_get_instance(dip); 1718 usbvc_state_t *usbvcp = ddi_get_soft_state(usbvc_statep, instance); 1719 1720 USB_DPRINTF_L4(PRINT_MASK_HOTPLUG, usbvcp->usbvc_log_handle, 1721 "reconnect: enter"); 1722 1723 mutex_enter(&usbvcp->usbvc_mutex); 1724 (void) usbvc_serialize_access(usbvcp, USBVC_SER_SIG); 1725 usbvc_restore_device_state(dip, usbvcp); 1726 usbvc_release_access(usbvcp); 1727 mutex_exit(&usbvcp->usbvc_mutex); 1728 1729 return (USB_SUCCESS); 1730 } 1731 1732 /* Sync objs and lists */ 1733 1734 /* 1735 * init/fini sync objects during attach 1736 */ 1737 static void 1738 usbvc_init_sync_objs(usbvc_state_t *usbvcp) 1739 { 1740 mutex_init(&usbvcp->usbvc_mutex, NULL, MUTEX_DRIVER, 1741 usbvcp->usbvc_reg->dev_iblock_cookie); 1742 1743 cv_init(&usbvcp->usbvc_serial_cv, NULL, CV_DRIVER, NULL); 1744 cv_init(&usbvcp->usbvc_read_cv, NULL, CV_DRIVER, NULL); 1745 cv_init(&usbvcp->usbvc_mapio_cv, NULL, CV_DRIVER, NULL); 1746 1747 usbvcp->usbvc_serial_inuse = B_FALSE; 1748 1749 usbvcp->usbvc_locks_initialized = B_TRUE; 1750 } 1751 1752 1753 static void 1754 usbvc_fini_sync_objs(usbvc_state_t *usbvcp) 1755 { 1756 cv_destroy(&usbvcp->usbvc_serial_cv); 1757 cv_destroy(&usbvcp->usbvc_read_cv); 1758 cv_destroy(&usbvcp->usbvc_mapio_cv); 1759 1760 mutex_destroy(&usbvcp->usbvc_mutex); 1761 } 1762 1763 1764 static void 1765 usbvc_init_lists(usbvc_state_t *usbvcp) 1766 { 1767 /* video terminals */ 1768 list_create(&(usbvcp->usbvc_term_list), sizeof (usbvc_terms_t), 1769 offsetof(usbvc_terms_t, term_node)); 1770 1771 /* video units */ 1772 list_create(&(usbvcp->usbvc_unit_list), sizeof (usbvc_units_t), 1773 offsetof(usbvc_units_t, unit_node)); 1774 1775 /* stream interfaces */ 1776 list_create(&(usbvcp->usbvc_stream_list), sizeof (usbvc_stream_if_t), 1777 offsetof(usbvc_stream_if_t, stream_if_node)); 1778 } 1779 1780 1781 /* 1782 * Free all the data structures allocated when parsing descriptors of ctrl 1783 * and stream interfaces. It is safe to call this function because it always 1784 * checks the pointer before free mem. 1785 */ 1786 static void 1787 usbvc_fini_lists(usbvc_state_t *usbvcp) 1788 { 1789 USB_DPRINTF_L4(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 1790 "usbvc_fini_lists: enter"); 1791 1792 usbvc_free_ctrl_descr(usbvcp); 1793 1794 /* Free all video stream structure and the sub-structures */ 1795 usbvc_free_stream_descr(usbvcp); 1796 1797 USB_DPRINTF_L4(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 1798 "usbvc_fini_lists: end"); 1799 } 1800 1801 1802 /* 1803 * Free all the data structures allocated when parsing descriptors of ctrl 1804 * interface. 1805 */ 1806 static void 1807 usbvc_free_ctrl_descr(usbvc_state_t *usbvcp) 1808 { 1809 usbvc_terms_t *term; 1810 usbvc_units_t *unit; 1811 1812 USB_DPRINTF_L4(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 1813 "usbvc_free_ctrl_descr: enter"); 1814 1815 if (usbvcp->usbvc_vc_header) { 1816 kmem_free(usbvcp->usbvc_vc_header, sizeof (usbvc_vc_header_t)); 1817 } 1818 1819 /* Free all video terminal structure */ 1820 while (!list_is_empty(&usbvcp->usbvc_term_list)) { 1821 term = list_head(&usbvcp->usbvc_term_list); 1822 if (term != NULL) { 1823 list_remove(&(usbvcp->usbvc_term_list), term); 1824 kmem_free(term, sizeof (usbvc_terms_t)); 1825 } 1826 } 1827 1828 /* Free all video unit structure */ 1829 while (!list_is_empty(&usbvcp->usbvc_unit_list)) { 1830 unit = list_head(&usbvcp->usbvc_unit_list); 1831 if (unit != NULL) { 1832 list_remove(&(usbvcp->usbvc_unit_list), unit); 1833 kmem_free(unit, sizeof (usbvc_units_t)); 1834 } 1835 } 1836 } 1837 1838 1839 /* 1840 * Free all the data structures allocated when parsing descriptors of stream 1841 * interfaces. 1842 */ 1843 static void 1844 usbvc_free_stream_descr(usbvc_state_t *usbvcp) 1845 { 1846 usbvc_stream_if_t *strm; 1847 usbvc_input_header_t *in_hdr; 1848 usbvc_output_header_t *out_hdr; 1849 uint8_t fmt_cnt, frm_cnt; 1850 1851 while (!list_is_empty(&usbvcp->usbvc_stream_list)) { 1852 USB_DPRINTF_L3(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 1853 "usbvc_fini_lists: stream list not empty."); 1854 1855 strm = list_head(&usbvcp->usbvc_stream_list); 1856 if (strm != NULL) { 1857 1858 /* unlink this stream's data structure from the list */ 1859 list_remove(&(usbvcp->usbvc_stream_list), strm); 1860 } else { 1861 1862 /* No real stream data structure in the list */ 1863 return; 1864 } 1865 1866 in_hdr = strm->input_header; 1867 out_hdr = strm->output_header; 1868 1869 if (in_hdr) { 1870 fmt_cnt = in_hdr->descr->bNumFormats; 1871 } else if (out_hdr) { 1872 fmt_cnt = out_hdr->descr->bNumFormats; 1873 } 1874 1875 USB_DPRINTF_L3(PRINT_MASK_CLOSE, 1876 usbvcp->usbvc_log_handle, "usbvc_fini_lists:" 1877 " fmtgrp cnt=%d", fmt_cnt); 1878 1879 /* Free headers */ 1880 if (in_hdr) { 1881 kmem_free(in_hdr, sizeof (usbvc_input_header_t)); 1882 } 1883 if (out_hdr) { 1884 kmem_free(out_hdr, sizeof (usbvc_output_header_t)); 1885 } 1886 1887 /* Free format descriptors */ 1888 if (strm->format_group) { 1889 int i; 1890 usbvc_format_group_t *fmtgrp; 1891 1892 for (i = 0; i < fmt_cnt; i++) { 1893 fmtgrp = &strm->format_group[i]; 1894 if (fmtgrp->format == NULL) { 1895 1896 break; 1897 } 1898 if (fmtgrp->still) { 1899 kmem_free(fmtgrp->still, 1900 sizeof (usbvc_still_image_frame_t)); 1901 } 1902 frm_cnt = fmtgrp->format->bNumFrameDescriptors; 1903 1904 USB_DPRINTF_L3(PRINT_MASK_CLOSE, 1905 usbvcp->usbvc_log_handle, 1906 "usbvc_fini_lists:" 1907 " frame cnt=%d", frm_cnt); 1908 1909 if (fmtgrp->frames) { 1910 kmem_free(fmtgrp->frames, 1911 sizeof (usbvc_frames_t) * frm_cnt); 1912 } 1913 } 1914 kmem_free(strm->format_group, 1915 sizeof (usbvc_format_group_t) * fmt_cnt); 1916 } 1917 USB_DPRINTF_L3(PRINT_MASK_CLOSE, 1918 usbvcp->usbvc_log_handle, "usbvc_fini_lists:" 1919 " free stream_if_t"); 1920 1921 kmem_free(strm, sizeof (usbvc_stream_if_t)); 1922 } 1923 } 1924 1925 /* 1926 * Parse class specific descriptors of the video device 1927 */ 1928 1929 /* 1930 * Check the length of a class specific descriptor. Make sure cvs_buf_len is 1931 * not less than the length expected according to uvc spec. 1932 * 1933 * Args: 1934 * - off_num: the cvs_buf offset of the descriptor element that 1935 * indicates the number of variable descriptor elements; 1936 * - size: the size of each variable descriptor element, if zero, then the 1937 * size value is offered by off_size; 1938 * - off_size: the cvs_buf offset of the descriptor element that indicates 1939 * the size of each variable descriptor element; 1940 */ 1941 static int 1942 usbvc_chk_descr_len(uint8_t off_num, uint8_t size, uint8_t off_size, 1943 usb_cvs_data_t *cvs_data) 1944 { 1945 uchar_t *cvs_buf; 1946 uint_t cvs_buf_len; 1947 1948 cvs_buf = cvs_data->cvs_buf; 1949 cvs_buf_len = cvs_data->cvs_buf_len; 1950 1951 if (size == 0) { 1952 if (cvs_buf_len > off_size) { 1953 size = cvs_buf[off_size]; 1954 } else { 1955 1956 return (USB_FAILURE); 1957 } 1958 } 1959 if (cvs_buf_len < (off_num + 1)) { 1960 1961 return (USB_FAILURE); 1962 } 1963 1964 if (cvs_buf_len < (cvs_buf[off_num] * size + off_num +1)) { 1965 1966 return (USB_FAILURE); 1967 } 1968 1969 return (USB_SUCCESS); 1970 } 1971 1972 1973 /* Parse the descriptors of control interface */ 1974 static int 1975 usbvc_parse_ctrl_if(usbvc_state_t *usbvcp) 1976 { 1977 int if_num; 1978 int cvs_num; 1979 usb_alt_if_data_t *if_alt_data; 1980 usb_cvs_data_t *cvs_data; 1981 uchar_t *cvs_buf; 1982 uint_t cvs_buf_len; 1983 uint16_t version; 1984 1985 if_num = usbvcp->usbvc_reg->dev_curr_if; 1986 if_alt_data = usbvcp->usbvc_reg->dev_curr_cfg->cfg_if[if_num].if_alt; 1987 cvs_data = if_alt_data->altif_cvs; 1988 1989 for (cvs_num = 0; cvs_num < if_alt_data->altif_n_cvs; cvs_num++) { 1990 cvs_buf = cvs_data[cvs_num].cvs_buf; 1991 cvs_buf_len = cvs_data[cvs_num].cvs_buf_len; 1992 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 1993 "usbvc_parse_ctrl_if: cvs_num= %d, cvs_buf_len=%d", 1994 cvs_num, cvs_buf_len); 1995 1996 /* 1997 * parse interface cvs descriptors here; by checking 1998 * bDescriptorType (cvs_buf[1]) 1999 */ 2000 if (cvs_buf[1] != CS_INTERFACE) { 2001 2002 continue; 2003 } 2004 2005 /* 2006 * Different descriptors in VC interface; according to 2007 * bDescriptorSubType (cvs_buf[2]) 2008 */ 2009 switch (cvs_buf[2]) { 2010 case VC_HEADER: 2011 2012 /* 2013 * According to uvc spec, there must be one and only 2014 * be one header. If more than one, return failure. 2015 */ 2016 if (usbvcp->usbvc_vc_header) { 2017 2018 return (USB_FAILURE); 2019 } 2020 /* 2021 * Check if it is a valid HEADER descriptor in case of 2022 * a device not compliant to uvc spec. This descriptor 2023 * is critical, return failure if not a valid one. 2024 */ 2025 if (usbvc_chk_descr_len(11, 1, 0, cvs_data) != 2026 USB_SUCCESS) { 2027 2028 return (USB_FAILURE); 2029 } 2030 usbvcp->usbvc_vc_header = 2031 (usbvc_vc_header_t *)kmem_zalloc( 2032 sizeof (usbvc_vc_header_t), KM_SLEEP); 2033 usbvcp->usbvc_vc_header->descr = 2034 (usbvc_vc_header_descr_t *)&cvs_buf[0]; 2035 2036 LE_TO_UINT16(usbvcp->usbvc_vc_header->descr->bcdUVC, 2037 0, version); 2038 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2039 usbvcp->usbvc_log_handle, "usbvc_parse_ctrl_if:" 2040 " VC header, bcdUVC=%x", version); 2041 if (usbvcp->usbvc_vc_header->descr->bInCollection == 2042 0) { 2043 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2044 usbvcp->usbvc_log_handle, 2045 "usbvc_parse_ctrl_if: no strm interfaces"); 2046 2047 break; 2048 } 2049 2050 /* stream interface numbers */ 2051 usbvcp->usbvc_vc_header->baInterfaceNr = &cvs_buf[12]; 2052 2053 break; 2054 case VC_INPUT_TERMINAL: 2055 { 2056 usbvc_terms_t *term; 2057 2058 /* 2059 * Check if it is a valid descriptor in case of a 2060 * device not compliant to uvc spec 2061 */ 2062 if (cvs_buf_len < USBVC_I_TERM_LEN_MIN) { 2063 2064 break; 2065 } 2066 term = (usbvc_terms_t *) 2067 kmem_zalloc(sizeof (usbvc_terms_t), KM_SLEEP); 2068 term->descr = (usbvc_term_descr_t *)cvs_buf; 2069 2070 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2071 usbvcp->usbvc_log_handle, "usbvc_parse_ctrl_if: " 2072 "input term type=%x", term->descr->wTerminalType); 2073 if (term->descr->wTerminalType == ITT_CAMERA) { 2074 if (usbvc_chk_descr_len(14, 1, 0, cvs_data) != 2075 USB_SUCCESS) { 2076 kmem_free(term, sizeof (usbvc_terms_t)); 2077 2078 break; 2079 } 2080 term->bmControls = &cvs_buf[15]; 2081 } else if (cvs_buf_len > 8) { /* other input terms */ 2082 term->bSpecific = &cvs_buf[8]; 2083 } 2084 list_insert_tail(&(usbvcp->usbvc_term_list), term); 2085 2086 break; 2087 } 2088 case VC_OUTPUT_TERMINAL: 2089 { 2090 usbvc_terms_t *term; 2091 2092 if (cvs_buf_len < USBVC_O_TERM_LEN_MIN) { 2093 2094 break; 2095 } 2096 term = (usbvc_terms_t *) 2097 kmem_zalloc(sizeof (usbvc_terms_t), KM_SLEEP); 2098 term->descr = (usbvc_term_descr_t *)cvs_buf; 2099 2100 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2101 usbvcp->usbvc_log_handle, "usbvc_parse_ctrl_if:" 2102 " output term id= %x", term->descr->bTerminalID); 2103 if (cvs_buf_len > 9) { 2104 term->bSpecific = &cvs_buf[9]; 2105 } 2106 list_insert_tail(&(usbvcp->usbvc_term_list), term); 2107 2108 break; 2109 } 2110 case VC_PROCESSING_UNIT: 2111 { 2112 uint8_t sz; 2113 usbvc_units_t *unit; 2114 2115 if (usbvc_chk_descr_len(7, 1, 0, cvs_data) != 2116 USB_SUCCESS) { 2117 2118 break; 2119 } 2120 2121 /* bControlSize */ 2122 sz = cvs_buf[7]; 2123 2124 if ((sz + 8) >= cvs_buf_len) { 2125 2126 break; 2127 } 2128 unit = (usbvc_units_t *) 2129 kmem_zalloc(sizeof (usbvc_units_t), KM_SLEEP); 2130 2131 unit->descr = (usbvc_unit_descr_t *)cvs_buf; 2132 2133 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2134 usbvcp->usbvc_log_handle, "usbvc_parse_ctrl_if: " 2135 "unit type=%x", unit->descr->bDescriptorSubType); 2136 2137 if (sz != 0) { 2138 unit->bmControls = &cvs_buf[8]; 2139 } 2140 unit->iProcessing = cvs_buf[8 + sz]; 2141 2142 /* 2143 * video class 1.1 version add one element 2144 * (bmVideoStandards) to processing unit descriptor 2145 */ 2146 if (cvs_buf_len > (9 + sz)) { 2147 unit->bmVideoStandards = cvs_buf[9 + sz]; 2148 } 2149 list_insert_tail(&(usbvcp->usbvc_unit_list), unit); 2150 2151 break; 2152 } 2153 case VC_SELECTOR_UNIT: 2154 { 2155 uint8_t pins; 2156 usbvc_units_t *unit; 2157 2158 if (usbvc_chk_descr_len(4, 1, 0, cvs_data) != 2159 USB_SUCCESS) { 2160 2161 break; 2162 } 2163 pins = cvs_buf[4]; 2164 if ((pins + 5) >= cvs_buf_len) { 2165 2166 break; 2167 } 2168 unit = (usbvc_units_t *) 2169 kmem_zalloc(sizeof (usbvc_units_t), KM_SLEEP); 2170 2171 unit->descr = (usbvc_unit_descr_t *)cvs_buf; 2172 2173 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2174 usbvcp->usbvc_log_handle, "usbvc_parse_ctrl_if: " 2175 "unit type=%x", unit->descr->bDescriptorSubType); 2176 if (pins > 0) { 2177 unit->baSourceID = &cvs_buf[5]; 2178 } 2179 unit->iSelector = cvs_buf[5 + pins]; 2180 2181 list_insert_tail(&(usbvcp->usbvc_unit_list), unit); 2182 2183 break; 2184 } 2185 case VC_EXTENSION_UNIT: 2186 { 2187 uint8_t pins, n; 2188 usbvc_units_t *unit; 2189 2190 if (usbvc_chk_descr_len(21, 1, 0, cvs_data) != 2191 USB_SUCCESS) { 2192 2193 break; 2194 } 2195 pins = cvs_buf[21]; 2196 if ((pins + 22) >= cvs_buf_len) { 2197 2198 break; 2199 } 2200 2201 /* Size of bmControls */ 2202 n = cvs_buf[pins + 22]; 2203 2204 if (usbvc_chk_descr_len(pins + 22, 1, 0, cvs_data) != 2205 USB_SUCCESS) { 2206 2207 break; 2208 } 2209 if ((23 + pins + n) >= cvs_buf_len) { 2210 2211 break; 2212 } 2213 unit = (usbvc_units_t *) 2214 kmem_zalloc(sizeof (usbvc_units_t), KM_SLEEP); 2215 2216 unit->descr = (usbvc_unit_descr_t *)cvs_buf; 2217 2218 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2219 usbvcp->usbvc_log_handle, "usbvc_parse_ctrl_if: " 2220 "unit type=%x", unit->descr->bDescriptorSubType); 2221 if (pins != 0) { 2222 unit->baSourceID = &cvs_buf[22]; 2223 } 2224 unit->bControlSize = cvs_buf[22 + pins]; 2225 2226 if (unit->bControlSize != 0) { 2227 unit->bmControls = &cvs_buf[23 + pins]; 2228 } 2229 unit->iExtension = cvs_buf[23 + pins + n]; 2230 2231 list_insert_tail(&(usbvcp->usbvc_unit_list), unit); 2232 2233 break; 2234 } 2235 default: 2236 2237 break; 2238 } 2239 } 2240 2241 /* 2242 * For webcam which is not compliant to video class specification 2243 * and no header descriptor in VC interface, return USB_FAILURE. 2244 */ 2245 if (!usbvcp->usbvc_vc_header) { 2246 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2247 "usbvc_parse_ctrl_if: no header descriptor"); 2248 2249 return (USB_FAILURE); 2250 } 2251 2252 return (USB_SUCCESS); 2253 } 2254 2255 2256 /* Parse all the cvs descriptors in one stream interface. */ 2257 usbvc_stream_if_t * 2258 usbvc_parse_stream_if(usbvc_state_t *usbvcp, int if_num) 2259 { 2260 usb_alt_if_data_t *if_alt_data; 2261 uint_t i, j; 2262 usbvc_stream_if_t *strm_if; 2263 uint16_t pktsize; 2264 uint8_t ep_adr; 2265 2266 strm_if = (usbvc_stream_if_t *)kmem_zalloc(sizeof (usbvc_stream_if_t), 2267 KM_SLEEP); 2268 strm_if->if_descr = &usbvcp->usbvc_reg->dev_curr_cfg->cfg_if[if_num]; 2269 if_alt_data = strm_if->if_descr->if_alt; 2270 if (usbvc_parse_stream_header(usbvcp, strm_if) != USB_SUCCESS) { 2271 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2272 "usbvc_parse_stream_if: parse header fail"); 2273 kmem_free(strm_if, sizeof (usbvc_stream_if_t)); 2274 2275 return (NULL); 2276 } 2277 if (usbvc_parse_format_groups(usbvcp, strm_if) != USB_SUCCESS) { 2278 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2279 "usbvc_parse_stream_if: parse groups fail"); 2280 kmem_free(strm_if, sizeof (usbvc_stream_if_t)); 2281 2282 return (NULL); 2283 } 2284 2285 /* Parse the alternate settings to find the maximum bandwidth. */ 2286 for (i = 0; i < strm_if->if_descr->if_n_alt; i++) { 2287 if_alt_data = &strm_if->if_descr->if_alt[i]; 2288 for (j = 0; j < if_alt_data->altif_n_ep; j++) { 2289 ep_adr = 2290 if_alt_data->altif_ep[j].ep_descr.bEndpointAddress; 2291 if (strm_if->input_header != NULL && 2292 ep_adr != 2293 strm_if->input_header->descr->bEndpointAddress) { 2294 2295 continue; 2296 } 2297 if (strm_if->output_header != NULL && 2298 ep_adr != 2299 strm_if->output_header->descr->bEndpointAddress) { 2300 2301 continue; 2302 } 2303 pktsize = 2304 if_alt_data->altif_ep[j].ep_descr.wMaxPacketSize; 2305 pktsize = HS_PKT_SIZE(pktsize); 2306 if (pktsize > strm_if->max_isoc_payload) { 2307 strm_if->max_isoc_payload = pktsize; 2308 } 2309 } 2310 } 2311 2312 /* initialize MJPEC FID toggle */ 2313 strm_if->fid = 0xff; 2314 2315 /* 2316 * initialize desired number of buffers used internally in read() mode 2317 */ 2318 strm_if->buf_read_num = USBVC_DEFAULT_READ_BUF_NUM; 2319 2320 USB_DPRINTF_L4(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2321 "usbvc_parse_stream_if: return. max_isoc_payload=%x", 2322 strm_if->max_isoc_payload); 2323 2324 return (strm_if); 2325 } 2326 2327 2328 /* 2329 * Parse all the stream interfaces asociated with the video control interface. 2330 * This driver will attach to a video control interface on the device, 2331 * there might be multiple video stream interfaces associated with one video 2332 * control interface. 2333 */ 2334 static int 2335 usbvc_parse_stream_ifs(usbvc_state_t *usbvcp) 2336 { 2337 int i, if_cnt, if_num; 2338 usbvc_stream_if_t *strm_if; 2339 2340 if_cnt = usbvcp->usbvc_vc_header->descr->bInCollection; 2341 if (if_cnt == 0) { 2342 ASSERT(list_is_empty(&usbvcp->usbvc_stream_list)); 2343 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2344 "usbvc_parse_stream_ifs: no stream interfaces"); 2345 2346 return (USB_SUCCESS); 2347 } 2348 for (i = 0; i < if_cnt; i++) { 2349 if_num = usbvcp->usbvc_vc_header->baInterfaceNr[i]; 2350 strm_if = usbvc_parse_stream_if(usbvcp, if_num); 2351 if (strm_if == NULL) { 2352 USB_DPRINTF_L2(PRINT_MASK_ATTA, 2353 usbvcp->usbvc_log_handle, "usbvc_parse_stream_ifs:" 2354 " parse stream interface %d failed.", if_num); 2355 2356 return (USB_FAILURE); 2357 } 2358 /* video data buffers */ 2359 list_create(&(strm_if->buf_map.uv_buf_free), 2360 sizeof (usbvc_buf_t), offsetof(usbvc_buf_t, buf_node)); 2361 list_create(&(strm_if->buf_map.uv_buf_done), 2362 sizeof (usbvc_buf_t), offsetof(usbvc_buf_t, buf_node)); 2363 list_create(&(strm_if->buf_read.uv_buf_free), 2364 sizeof (usbvc_buf_t), offsetof(usbvc_buf_t, buf_node)); 2365 list_create(&(strm_if->buf_read.uv_buf_done), 2366 sizeof (usbvc_buf_t), offsetof(usbvc_buf_t, buf_node)); 2367 2368 list_insert_tail(&(usbvcp->usbvc_stream_list), strm_if); 2369 } 2370 2371 /* Make the first stream interface as the default one. */ 2372 usbvcp->usbvc_curr_strm = 2373 (usbvc_stream_if_t *)list_head(&usbvcp->usbvc_stream_list); 2374 2375 return (USB_SUCCESS); 2376 } 2377 2378 2379 /* 2380 * Parse colorspace descriptor and still image descriptor of a format group. 2381 * There is only one colorspace or still image descriptor in one format group. 2382 */ 2383 static void 2384 usbvc_parse_color_still(usbvc_state_t *usbvcp, usbvc_format_group_t *fmtgrp, 2385 usb_cvs_data_t *cvs_data, uint_t cvs_num, uint_t altif_n_cvs) 2386 { 2387 uint8_t frame_cnt; 2388 uint_t last_frame, i; 2389 uchar_t *cvs_buf; 2390 uint_t cvs_buf_len; 2391 2392 frame_cnt = fmtgrp->format->bNumFrameDescriptors; 2393 last_frame = frame_cnt + cvs_num; 2394 2395 /* 2396 * Find the still image descr and color format descr if there are any. 2397 * UVC Spec: only one still image and one color descr is allowed in 2398 * one format group. 2399 */ 2400 for (i = 1; i <= 2; i++) { 2401 if ((last_frame + i) >= altif_n_cvs) { 2402 2403 break; 2404 } 2405 cvs_buf = cvs_data[last_frame + i].cvs_buf; 2406 cvs_buf_len = cvs_data[last_frame + i].cvs_buf_len; 2407 2408 if (cvs_buf[2] == VS_STILL_IMAGE_FRAME) { 2409 uint8_t m, n, off; 2410 usbvc_still_image_frame_t *st; 2411 2412 if (usbvc_chk_descr_len(4, 4, 0, cvs_data) != 2413 USB_SUCCESS) { 2414 2415 continue; 2416 } 2417 2418 /* Number of Image Size patterns of this format */ 2419 n = cvs_buf[4]; 2420 2421 /* offset of bNumCompressionPattern */ 2422 off = 9 + 4 * n -4; 2423 2424 if (off >= cvs_buf_len) { 2425 2426 continue; 2427 } 2428 2429 /* Number of compression pattern of this format */ 2430 m = cvs_buf[off]; 2431 2432 if (usbvc_chk_descr_len(m, 1, 0, cvs_data) != 2433 USB_SUCCESS) { 2434 2435 continue; 2436 } 2437 fmtgrp->still = (usbvc_still_image_frame_t *) 2438 kmem_zalloc(sizeof (usbvc_still_image_frame_t), 2439 KM_SLEEP); 2440 st = fmtgrp->still; 2441 st->descr = (usbvc_still_image_frame_descr_t *)cvs_buf; 2442 n = st->descr->bNumImageSizePatterns; 2443 if (n > 0) { 2444 st->width_height = 2445 (width_height_t *)&cvs_buf[5]; 2446 } 2447 st->bNumCompressionPattern = cvs_buf[off]; 2448 if (cvs_buf[off] > 0) { 2449 st->bCompression = &cvs_buf[off + 1]; 2450 } 2451 } 2452 if (cvs_buf[2] == VS_COLORFORMAT) { 2453 fmtgrp->color = (usbvc_color_matching_descr_t *)cvs_buf; 2454 fmtgrp->v4l2_color = usbvc_v4l2_colorspace( 2455 fmtgrp->color->bColorPrimaries); 2456 } 2457 } 2458 USB_DPRINTF_L4(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2459 "usbvc_parse_color_still: still=%p, color=%p", 2460 (void *)fmtgrp->still, (void *)fmtgrp->color); 2461 } 2462 2463 2464 /* 2465 * Parse frame descriptors of a format group. There might be multi frame 2466 * descriptors in one format group. 2467 */ 2468 static void 2469 usbvc_parse_frames(usbvc_state_t *usbvcp, usbvc_format_group_t *fmtgrp, 2470 usb_cvs_data_t *cvs_data, uint_t cvs_num, uint_t altif_n_cvs) 2471 { 2472 uint_t last_frame; 2473 usbvc_frames_t *frm; 2474 usb_cvs_data_t *cvs; 2475 uchar_t *cvs_buf; 2476 uint_t cvs_buf_len; 2477 uint8_t i; 2478 uint8_t frame_cnt = fmtgrp->format->bNumFrameDescriptors; 2479 2480 USB_DPRINTF_L4(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2481 "usbvc_parse_format_group: frame_cnt=%d", frame_cnt); 2482 2483 if (frame_cnt == 0) { 2484 fmtgrp->frames = NULL; 2485 2486 return; 2487 } 2488 2489 /* All these mem allocated will be freed in cleanup() */ 2490 fmtgrp->frames = (usbvc_frames_t *) 2491 kmem_zalloc(sizeof (usbvc_frames_t) * frame_cnt, KM_SLEEP); 2492 2493 last_frame = frame_cnt + cvs_num; 2494 cvs_num++; 2495 i = 0; 2496 2497 /* 2498 * Traverse from the format decr's first frame decr to the the last 2499 * frame descr. 2500 */ 2501 for (; cvs_num <= last_frame; cvs_num++) { 2502 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2503 "usbvc_parse_frames: cvs_num=%d, i=%d", cvs_num, i); 2504 if (cvs_num >= altif_n_cvs) { 2505 USB_DPRINTF_L3(PRINT_MASK_ATTA, 2506 usbvcp->usbvc_log_handle, 2507 "usbvc_parse_frames: less frames than " 2508 "expected, cvs_num=%d, i=%d", cvs_num, i); 2509 2510 break; 2511 } 2512 cvs = &cvs_data[cvs_num]; 2513 cvs_buf = cvs->cvs_buf; 2514 cvs_buf_len = cvs->cvs_buf_len; 2515 if (cvs_buf_len < USBVC_FRAME_LEN_MIN) { 2516 i++; 2517 2518 continue; 2519 } 2520 frm = &fmtgrp->frames[i]; 2521 frm->descr = (usbvc_frame_descr_t *)cvs->cvs_buf; 2522 2523 /* Descriptor for discrete frame interval */ 2524 if (frm->descr->bFrameIntervalType > 0) { 2525 if (usbvc_chk_descr_len(25, 4, 0, cvs) != USB_SUCCESS) { 2526 frm->descr = NULL; 2527 i++; 2528 2529 continue; 2530 } 2531 2532 frm->dwFrameInterval = (uint8_t *)&cvs_buf[26]; 2533 } else { /* Continuous interval */ 2534 if (cvs_buf_len < USBVC_FRAME_LEN_CON) { 2535 frm->descr = NULL; 2536 i++; 2537 2538 continue; 2539 } 2540 2541 /* Continuous frame intervals */ 2542 LE_TO_UINT32(cvs_buf, 26, frm->dwMinFrameInterval); 2543 LE_TO_UINT32(cvs_buf, 30, frm->dwMaxFrameInterval); 2544 LE_TO_UINT32(cvs_buf, 34, frm->dwFrameIntervalStep); 2545 } 2546 2547 i++; 2548 } 2549 fmtgrp->frame_cnt = i; 2550 USB_DPRINTF_L4(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2551 "usbvc_parse_frames: %d frames are actually parsed", 2552 fmtgrp->frame_cnt); 2553 } 2554 2555 2556 /* Parse one of the format groups in a stream interface */ 2557 static int 2558 usbvc_parse_format_group(usbvc_state_t *usbvcp, usbvc_format_group_t *fmtgrp, 2559 usb_cvs_data_t *cvs_data, uint_t cvs_num, uint_t altif_n_cvs) 2560 { 2561 usbvc_format_descr_t *fmt; 2562 2563 fmt = fmtgrp->format; 2564 USB_DPRINTF_L4(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2565 "usbvc_parse_format_group: frame_cnt=%d, cvs_num=%d", 2566 fmt->bNumFrameDescriptors, cvs_num); 2567 2568 switch (fmt->bDescriptorSubType) { 2569 case VS_FORMAT_UNCOMPRESSED: 2570 usbvc_parse_color_still(usbvcp, fmtgrp, cvs_data, cvs_num, 2571 altif_n_cvs); 2572 usbvc_parse_frames(usbvcp, fmtgrp, cvs_data, cvs_num, 2573 altif_n_cvs); 2574 fmtgrp->v4l2_bpp = fmt->fmt.uncompressed.bBitsPerPixel / 8; 2575 fmtgrp->v4l2_pixelformat = usbvc_v4l2_guid2fcc( 2576 (uint8_t *)&fmt->fmt.uncompressed.guidFormat); 2577 2578 break; 2579 case VS_FORMAT_MJPEG: 2580 usbvc_parse_color_still(usbvcp, fmtgrp, cvs_data, cvs_num, 2581 altif_n_cvs); 2582 usbvc_parse_frames(usbvcp, fmtgrp, cvs_data, cvs_num, 2583 altif_n_cvs); 2584 fmtgrp->v4l2_bpp = 0; 2585 fmtgrp->v4l2_pixelformat = V4L2_PIX_FMT_MJPEG; 2586 2587 break; 2588 case VS_FORMAT_MPEG2TS: 2589 case VS_FORMAT_DV: 2590 case VS_FORMAT_FRAME_BASED: 2591 case VS_FORMAT_STREAM_BASED: 2592 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2593 "usbvc_parse_format_group: format not supported yet."); 2594 2595 return (USB_FAILURE); 2596 default: 2597 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2598 "usbvc_parse_format_group: unknown format."); 2599 2600 return (USB_FAILURE); 2601 } 2602 2603 return (USB_SUCCESS); 2604 } 2605 2606 2607 /* Parse the descriptors belong to one format */ 2608 static int 2609 usbvc_parse_format_groups(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 2610 { 2611 usb_alt_if_data_t *if_alt_data; 2612 usb_cvs_data_t *cvs_data; 2613 uint8_t fmtgrp_num, fmtgrp_cnt; 2614 uchar_t *cvs_buf; 2615 uint_t cvs_num = 0; 2616 usbvc_format_group_t *fmtgrp; 2617 2618 fmtgrp_cnt = 0; 2619 /* 2620 * bNumFormats indicates the number of formats in this stream 2621 * interface. On some devices, we see this number is larger than 2622 * the truth. 2623 */ 2624 if (strm_if->input_header) { 2625 fmtgrp_cnt = strm_if->input_header->descr->bNumFormats; 2626 } else if (strm_if->output_header) { 2627 fmtgrp_cnt = strm_if->output_header->descr->bNumFormats; 2628 } 2629 if (!fmtgrp_cnt) { 2630 2631 return (USB_FAILURE); 2632 } 2633 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2634 "usbvc_parse_format_groups: fmtgrp_cnt=%d", fmtgrp_cnt); 2635 2636 fmtgrp = (usbvc_format_group_t *) 2637 kmem_zalloc(sizeof (usbvc_format_group_t) * fmtgrp_cnt, KM_SLEEP); 2638 2639 if_alt_data = strm_if->if_descr->if_alt; 2640 cvs_data = if_alt_data->altif_cvs; 2641 2642 for (fmtgrp_num = 0; fmtgrp_num < fmtgrp_cnt && 2643 cvs_num < if_alt_data->altif_n_cvs; cvs_num++) { 2644 cvs_buf = cvs_data[cvs_num].cvs_buf; 2645 switch (cvs_buf[2]) { 2646 case VS_FORMAT_UNCOMPRESSED: 2647 case VS_FORMAT_MJPEG: 2648 case VS_FORMAT_MPEG2TS: 2649 case VS_FORMAT_DV: 2650 case VS_FORMAT_FRAME_BASED: 2651 case VS_FORMAT_STREAM_BASED: 2652 fmtgrp[fmtgrp_num].format = 2653 (usbvc_format_descr_t *)cvs_buf; 2654 2655 /* 2656 * Now cvs_data[cvs_num].cvs_buf is format descriptor, 2657 * usbvc_parse_format_group will then parse the frame 2658 * descriptors following this format descriptor. 2659 */ 2660 (void) usbvc_parse_format_group(usbvcp, 2661 &fmtgrp[fmtgrp_num], cvs_data, cvs_num, 2662 if_alt_data->altif_n_cvs); 2663 2664 fmtgrp_num++; 2665 2666 break; 2667 default: 2668 break; 2669 } 2670 } 2671 2672 /* Save the number of parsed format groups. */ 2673 strm_if->fmtgrp_cnt = fmtgrp_num; 2674 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2675 "usbvc_parse_format_groups: acctually %d formats parsed", 2676 fmtgrp_num); 2677 2678 /* 2679 * If can't find any formats, then free all allocated 2680 * usbvc_format_group_t, return failure. 2681 */ 2682 if (!(fmtgrp[0].format)) { 2683 kmem_free(fmtgrp, sizeof (usbvc_format_group_t) * fmtgrp_cnt); 2684 strm_if->format_group = NULL; 2685 2686 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2687 "usbvc_parse_format_groups: can't find any formats"); 2688 2689 return (USB_FAILURE); 2690 } 2691 strm_if->format_group = fmtgrp; 2692 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2693 "usbvc_parse_format_groups: %d format groups parsed", fmtgrp_num); 2694 2695 return (USB_SUCCESS); 2696 } 2697 2698 2699 /* 2700 * Parse the input/output header in one stream interface. 2701 * UVC Spec: there must be one and only one header in one stream interface. 2702 */ 2703 int 2704 usbvc_parse_stream_header(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 2705 { 2706 usb_alt_if_data_t *if_alt_data; 2707 usb_cvs_data_t *cvs_data; 2708 int cvs_num; 2709 uchar_t *cvs_buf; 2710 usbvc_input_header_t *in_hdr; 2711 usbvc_output_header_t *out_hdr; 2712 2713 if_alt_data = strm_if->if_descr->if_alt; 2714 cvs_data = if_alt_data->altif_cvs; 2715 for (cvs_num = 0; cvs_num < if_alt_data->altif_n_cvs; cvs_num++) { 2716 cvs_buf = cvs_data[cvs_num].cvs_buf; 2717 USB_DPRINTF_L3(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2718 "usbvc_parse_stream_header: cvs_num= %d", cvs_num); 2719 2720 /* 2721 * parse interface cvs descriptors here; by checking 2722 * bDescriptorType (cvs_buf[1]) 2723 */ 2724 if (cvs_buf[1] != CS_INTERFACE) { 2725 2726 continue; 2727 } 2728 2729 if (cvs_buf[2] == VS_INPUT_HEADER) { 2730 if (usbvc_chk_descr_len(3, 0, 12, cvs_data) != 2731 USB_SUCCESS) { 2732 2733 continue; 2734 } 2735 2736 strm_if->input_header = 2737 (usbvc_input_header_t *) 2738 kmem_zalloc(sizeof (usbvc_input_header_t), 2739 KM_SLEEP); 2740 in_hdr = strm_if->input_header; 2741 in_hdr->descr = (usbvc_input_header_descr_t *)cvs_buf; 2742 if (in_hdr->descr->bNumFormats > 0) { 2743 in_hdr->bmaControls = &cvs_buf[13]; 2744 } 2745 2746 return (USB_SUCCESS); 2747 } else if (cvs_buf[2] == VS_OUTPUT_HEADER) { 2748 if (usbvc_chk_descr_len(3, 0, 8, cvs_data) != 2749 USB_SUCCESS) { 2750 2751 continue; 2752 } 2753 strm_if->output_header = 2754 (usbvc_output_header_t *) 2755 kmem_zalloc(sizeof (usbvc_output_header_t), 2756 KM_SLEEP); 2757 out_hdr = strm_if->output_header; 2758 out_hdr->descr = 2759 (usbvc_output_header_descr_t *)cvs_buf; 2760 if (out_hdr->descr->bNumFormats > 0) { 2761 out_hdr->bmaControls = &cvs_buf[13]; 2762 } 2763 2764 return (USB_SUCCESS); 2765 } else { 2766 2767 continue; 2768 } 2769 } 2770 /* Didn't find one header descriptor. */ 2771 USB_DPRINTF_L2(PRINT_MASK_ATTA, usbvcp->usbvc_log_handle, 2772 "usbvc_parse_stream_header: FAIL"); 2773 2774 return (USB_FAILURE); 2775 } 2776 2777 /* read I/O functions */ 2778 2779 /* Allocate bufs for read I/O method */ 2780 static int 2781 usbvc_alloc_read_bufs(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 2782 { 2783 usbvc_buf_t *buf; 2784 uchar_t *data; 2785 int i; 2786 uint32_t len; 2787 2788 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 2789 2790 LE_TO_UINT32(strm_if->ctrl_pc.dwMaxVideoFrameSize, 0, len); 2791 if (!len) { 2792 2793 return (USB_FAILURE); 2794 } 2795 for (i = 0; i < strm_if->buf_read_num; i++) { 2796 mutex_exit(&usbvcp->usbvc_mutex); 2797 buf = (usbvc_buf_t *)kmem_zalloc(sizeof (usbvc_buf_t), 2798 KM_SLEEP); 2799 data = (uchar_t *)kmem_zalloc(len, KM_SLEEP); 2800 mutex_enter(&usbvcp->usbvc_mutex); 2801 buf->data = data; 2802 buf->len = len; 2803 list_insert_tail(&(strm_if->buf_read.uv_buf_free), buf); 2804 } 2805 strm_if->buf_read.buf_cnt = strm_if->buf_read_num; 2806 USB_DPRINTF_L4(PRINT_MASK_READ, usbvcp->usbvc_log_handle, 2807 "read_bufs: %d bufs allocated", strm_if->buf_read.buf_cnt); 2808 2809 return (USB_SUCCESS); 2810 } 2811 2812 2813 /* Read a done buf, copy data to bp. This function is for read I/O method */ 2814 static int 2815 usbvc_read_buf(usbvc_state_t *usbvcp, struct buf *bp) 2816 { 2817 usbvc_buf_t *buf; 2818 2819 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 2820 2821 /* read a buf from full list and then put it to free list */ 2822 buf = list_head(&usbvcp->usbvc_curr_strm->buf_read.uv_buf_done); 2823 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 2824 "usbvc_read_buf: buf=%p, buf->filled=%d, bfu->len=%d," 2825 " bp->b_bcount=%ld, bp->b_resid=%lu", 2826 (void *)buf, buf->filled, buf->len, bp->b_bcount, bp->b_resid); 2827 2828 list_remove(&usbvcp->usbvc_curr_strm->buf_read.uv_buf_done, buf); 2829 bcopy(buf->data, bp->b_un.b_addr, buf->filled); 2830 bp->b_private = NULL; 2831 bp->b_resid = bp->b_bcount - buf->filled; 2832 list_insert_tail(&usbvcp->usbvc_curr_strm->buf_read.uv_buf_free, buf); 2833 2834 return (USB_SUCCESS); 2835 } 2836 2837 2838 /* Free one buf which is for read/write IO style */ 2839 static void 2840 usbvc_free_read_buf(usbvc_buf_t *buf) 2841 { 2842 if (buf != NULL) { 2843 if (buf->data) { 2844 kmem_free(buf->data, buf->len); 2845 } 2846 kmem_free(buf, sizeof (usbvc_buf_t)); 2847 } 2848 } 2849 2850 2851 /* Free all bufs which are for read/write IO style */ 2852 static void 2853 usbvc_free_read_bufs(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 2854 { 2855 usbvc_buf_t *buf; 2856 2857 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 2858 2859 if (!strm_if) { 2860 2861 return; 2862 } 2863 buf = strm_if->buf_read.buf_filling; 2864 usbvc_free_read_buf(buf); 2865 strm_if->buf_read.buf_filling = NULL; 2866 2867 while (!list_is_empty(&strm_if->buf_read.uv_buf_free)) { 2868 buf = list_head(&strm_if->buf_read.uv_buf_free); 2869 if (buf != NULL) { 2870 list_remove(&(strm_if->buf_read.uv_buf_free), buf); 2871 usbvc_free_read_buf(buf); 2872 } 2873 } 2874 while (!list_is_empty(&strm_if->buf_read.uv_buf_done)) { 2875 buf = list_head(&strm_if->buf_read.uv_buf_done); 2876 if (buf != NULL) { 2877 list_remove(&(strm_if->buf_read.uv_buf_done), buf); 2878 usbvc_free_read_buf(buf); 2879 } 2880 } 2881 strm_if->buf_read.buf_cnt = 0; 2882 USB_DPRINTF_L4(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 2883 "usbvc_free_read_bufs: return"); 2884 } 2885 2886 2887 /* 2888 * Allocate bufs for mapped I/O , return the number of allocated bufs 2889 * if success, return 0 if fail. 2890 */ 2891 int 2892 usbvc_alloc_map_bufs(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if, 2893 int buf_cnt, int buf_len) 2894 { 2895 int i = 0; 2896 usbvc_buf_t *bufs; 2897 2898 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 2899 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 2900 "usbvc_alloc_map_bufs: bufcnt=%d, buflen=%d", buf_cnt, buf_len); 2901 if (buf_len <= 0 || buf_cnt <= 0) { 2902 USB_DPRINTF_L2(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 2903 "usbvc_alloc_map_bufs: len<=0, cnt<=0"); 2904 2905 return (0); 2906 } 2907 mutex_exit(&usbvcp->usbvc_mutex); 2908 2909 bufs = (usbvc_buf_t *) kmem_zalloc(sizeof (usbvc_buf_t) * buf_cnt, 2910 KM_SLEEP); 2911 2912 mutex_enter(&usbvcp->usbvc_mutex); 2913 strm_if->buf_map.buf_head = bufs; 2914 buf_len = ptob(btopr(buf_len)); 2915 2916 mutex_exit(&usbvcp->usbvc_mutex); 2917 bufs[0].data = ddi_umem_alloc(buf_len * buf_cnt, DDI_UMEM_SLEEP, 2918 &bufs[0].umem_cookie); 2919 mutex_enter(&usbvcp->usbvc_mutex); 2920 2921 for (i = 0; i < buf_cnt; i++) { 2922 bufs[i].len = buf_len; 2923 bufs[i].data = bufs[0].data + (buf_len * i); 2924 bufs[i].umem_cookie = bufs[0].umem_cookie; 2925 bufs[i].status = USBVC_BUF_INIT; 2926 2927 bufs[i].v4l2_buf.index = i; 2928 bufs[i].v4l2_buf.m.offset = i * bufs[i].len; 2929 bufs[i].v4l2_buf.length = bufs[i].len; 2930 bufs[i].v4l2_buf.type = V4L2_BUF_TYPE_VIDEO_CAPTURE; 2931 bufs[i].v4l2_buf.sequence = 0; 2932 bufs[i].v4l2_buf.field = V4L2_FIELD_NONE; 2933 bufs[i].v4l2_buf.memory = V4L2_MEMORY_MMAP; 2934 bufs[i].v4l2_buf.flags = V4L2_MEMORY_MMAP; 2935 2936 list_insert_tail(&strm_if->buf_map.uv_buf_free, &bufs[i]); 2937 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 2938 "usbvc_alloc_map_bufs: prepare %d buffers of %d bytes", 2939 buf_cnt, bufs[i].len); 2940 } 2941 strm_if->buf_map.buf_cnt = buf_cnt; 2942 strm_if->buf_map.buf_filling = NULL; 2943 2944 return (buf_cnt); 2945 } 2946 2947 2948 /* Free all bufs which are for memory map IO style */ 2949 void 2950 usbvc_free_map_bufs(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 2951 { 2952 usbvc_buf_t *buf; 2953 2954 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 2955 if (!strm_if) { 2956 2957 return; 2958 } 2959 strm_if->buf_map.buf_filling = NULL; 2960 while (!list_is_empty(&strm_if->buf_map.uv_buf_free)) { 2961 buf = (usbvc_buf_t *)list_head(&strm_if->buf_map.uv_buf_free); 2962 list_remove(&(strm_if->buf_map.uv_buf_free), buf); 2963 } 2964 while (!list_is_empty(&strm_if->buf_map.uv_buf_done)) { 2965 buf = (usbvc_buf_t *)list_head(&strm_if->buf_map.uv_buf_done); 2966 list_remove(&(strm_if->buf_map.uv_buf_done), buf); 2967 } 2968 buf = strm_if->buf_map.buf_head; 2969 if (!buf) { 2970 USB_DPRINTF_L2(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 2971 "usbvc_free_map_bufs: no data buf need be freed, return"); 2972 2973 return; 2974 } 2975 if (buf->umem_cookie) { 2976 ddi_umem_free(buf->umem_cookie); 2977 } 2978 kmem_free(buf, sizeof (usbvc_buf_t) * strm_if->buf_map.buf_cnt); 2979 strm_if->buf_map.buf_cnt = 0; 2980 strm_if->buf_map.buf_head = NULL; 2981 2982 USB_DPRINTF_L4(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 2983 "usbvc_free_map_bufs: return"); 2984 } 2985 2986 2987 /* 2988 * Open the isoc pipe, this pipe is for video data transfer 2989 */ 2990 int 2991 usbvc_open_isoc_pipe(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 2992 { 2993 usb_pipe_policy_t policy; 2994 int rval = USB_SUCCESS; 2995 2996 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 2997 2998 if ((rval = usbvc_set_alt(usbvcp, strm_if)) != USB_SUCCESS) { 2999 3000 return (rval); 3001 } 3002 bzero(&policy, sizeof (usb_pipe_policy_t)); 3003 policy.pp_max_async_reqs = 2; 3004 mutex_exit(&usbvcp->usbvc_mutex); 3005 if ((rval = usb_pipe_open(usbvcp->usbvc_dip, strm_if->curr_ep, &policy, 3006 USB_FLAGS_SLEEP, &strm_if->datain_ph)) != USB_SUCCESS) { 3007 USB_DPRINTF_L2(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3008 "usbvc_open_isoc_pipe: open pipe fail"); 3009 mutex_enter(&usbvcp->usbvc_mutex); 3010 3011 return (rval); 3012 } 3013 mutex_enter(&usbvcp->usbvc_mutex); 3014 strm_if->start_polling = 0; 3015 3016 strm_if->stream_on = 0; 3017 3018 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3019 "usbvc_open_isoc_pipe: success, datain_ph=%p", 3020 (void *)strm_if->datain_ph); 3021 3022 return (rval); 3023 } 3024 3025 3026 /* 3027 * Open the isoc pipe 3028 */ 3029 static void 3030 usbvc_close_isoc_pipe(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 3031 { 3032 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 3033 if (!strm_if) { 3034 USB_DPRINTF_L2(PRINT_MASK_CLOSE, usbvcp->usbvc_log_handle, 3035 "usbvc_close_isoc_pipe: stream interface is NULL"); 3036 3037 return; 3038 } 3039 if (strm_if->datain_ph) { 3040 mutex_exit(&usbvcp->usbvc_mutex); 3041 usb_pipe_close(usbvcp->usbvc_dip, strm_if->datain_ph, 3042 USB_FLAGS_SLEEP, NULL, NULL); 3043 mutex_enter(&usbvcp->usbvc_mutex); 3044 } 3045 strm_if->datain_ph = NULL; 3046 } 3047 3048 3049 /* 3050 * Start to get video data from isoc pipe in the stream interface, 3051 * issue isoc req. 3052 */ 3053 int 3054 usbvc_start_isoc_polling(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if, 3055 uchar_t io_type) 3056 { 3057 int rval = USB_SUCCESS; 3058 uint_t if_num; 3059 usb_isoc_req_t *req; 3060 ushort_t pkt_size; 3061 ushort_t n_pkt, pkt; 3062 uint32_t frame_size; 3063 3064 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 3065 pkt_size = HS_PKT_SIZE(strm_if->curr_ep->wMaxPacketSize); 3066 if_num = strm_if->if_descr->if_alt->altif_descr.bInterfaceNumber; 3067 LE_TO_UINT32(strm_if->ctrl_pc.dwMaxVideoFrameSize, 0, frame_size); 3068 n_pkt = (frame_size + (pkt_size) - 1) / (pkt_size); 3069 3070 USB_DPRINTF_L3(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 3071 "usbvc_start_isoc_polling: if_num=%d, alt=%d, n_pkt=%d," 3072 " pkt_size=0x%x, MaxPacketSize=0x%x(Tsac#=%d), frame_size=0x%x", 3073 if_num, strm_if->curr_alt, n_pkt, pkt_size, 3074 strm_if->curr_ep->wMaxPacketSize, 3075 (1 + ((strm_if->curr_ep->wMaxPacketSize>> 11) & 3)), 3076 frame_size); 3077 3078 if (n_pkt > USBVC_MAX_PKTS) { 3079 n_pkt = USBVC_MAX_PKTS; 3080 } 3081 USB_DPRINTF_L3(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 3082 "usbvc_start_isoc_polling: n_pkt=%d", n_pkt); 3083 3084 mutex_exit(&usbvcp->usbvc_mutex); 3085 if ((req = usb_alloc_isoc_req(usbvcp->usbvc_dip, n_pkt, 3086 n_pkt * pkt_size, USB_FLAGS_SLEEP)) != NULL) { 3087 mutex_enter(&usbvcp->usbvc_mutex); 3088 3089 /* Initialize the packet descriptor */ 3090 for (pkt = 0; pkt < n_pkt; pkt++) { 3091 req->isoc_pkt_descr[pkt].isoc_pkt_length = pkt_size; 3092 } 3093 3094 req->isoc_pkts_count = n_pkt; 3095 3096 /* 3097 * zero here indicates that HCDs will use 3098 * isoc_pkt_descr->isoc_pkt_length to calculate 3099 * isoc_pkts_length. 3100 */ 3101 req->isoc_pkts_length = 0; 3102 req->isoc_attributes = USB_ATTRS_ISOC_XFER_ASAP | 3103 USB_ATTRS_SHORT_XFER_OK | USB_ATTRS_AUTOCLEARING; 3104 req->isoc_cb = usbvc_isoc_cb; 3105 req->isoc_exc_cb = usbvc_isoc_exc_cb; 3106 usbvcp->usbvc_io_type = io_type; 3107 req->isoc_client_private = (usb_opaque_t)usbvcp; 3108 mutex_exit(&usbvcp->usbvc_mutex); 3109 rval = usb_pipe_isoc_xfer(strm_if->datain_ph, req, 0); 3110 mutex_enter(&usbvcp->usbvc_mutex); 3111 } else { 3112 mutex_enter(&usbvcp->usbvc_mutex); 3113 USB_DPRINTF_L2(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 3114 "usbvc_start_isoc_polling: alloc_isoc_req fail"); 3115 3116 return (USB_FAILURE); 3117 } 3118 3119 if (rval != USB_SUCCESS) { 3120 if (req) { 3121 usb_free_isoc_req(req); 3122 req = NULL; 3123 } 3124 } 3125 USB_DPRINTF_L4(PRINT_MASK_IOCTL, usbvcp->usbvc_log_handle, 3126 "usbvc_start_isoc_polling: return, rval=%d", rval); 3127 3128 return (rval); 3129 } 3130 3131 /* callbacks for receiving video data (isco in transfer) */ 3132 3133 /*ARGSUSED*/ 3134 /* Isoc transfer callback, get video data */ 3135 static void 3136 usbvc_isoc_cb(usb_pipe_handle_t ph, usb_isoc_req_t *isoc_req) 3137 { 3138 usbvc_state_t *usbvcp = 3139 (usbvc_state_t *)isoc_req->isoc_client_private; 3140 int i; 3141 mblk_t *data = isoc_req->isoc_data; 3142 usbvc_buf_grp_t *bufgrp; 3143 3144 mutex_enter(&usbvcp->usbvc_mutex); 3145 3146 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3147 "usbvc_isoc_cb: rq=0x%p, fno=%" PRId64 ", n_pkts=%u, flag=0x%x," 3148 " data=0x%p, cnt=%d", 3149 (void *)isoc_req, isoc_req->isoc_frame_no, 3150 isoc_req->isoc_pkts_count, isoc_req->isoc_attributes, 3151 (void *)isoc_req->isoc_data, isoc_req->isoc_error_count); 3152 3153 ASSERT((isoc_req->isoc_cb_flags & USB_CB_INTR_CONTEXT) != 0); 3154 for (i = 0; i < isoc_req->isoc_pkts_count; i++) { 3155 3156 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3157 "\tpkt%d: " 3158 "pktsize=%d status=%d resid=%d", 3159 i, 3160 isoc_req->isoc_pkt_descr[i].isoc_pkt_length, 3161 isoc_req->isoc_pkt_descr[i].isoc_pkt_status, 3162 isoc_req->isoc_pkt_descr[i].isoc_pkt_actual_length); 3163 3164 if (isoc_req->isoc_pkt_descr[i].isoc_pkt_status != 3165 USB_CR_OK) { 3166 USB_DPRINTF_L3(PRINT_MASK_CB, 3167 usbvcp->usbvc_log_handle, 3168 "record: pkt=%d status=%s", i, usb_str_cr( 3169 isoc_req->isoc_pkt_descr[i].isoc_pkt_status)); 3170 } 3171 3172 if (usbvcp->usbvc_io_type == V4L2_MEMORY_MMAP) { 3173 bufgrp = &usbvcp->usbvc_curr_strm->buf_map; 3174 } else { 3175 bufgrp = &usbvcp->usbvc_curr_strm->buf_read; 3176 } 3177 3178 if (isoc_req->isoc_pkt_descr[i].isoc_pkt_actual_length) { 3179 if (usbvc_decode_stream_header(usbvcp, bufgrp, data, 3180 isoc_req->isoc_pkt_descr[i].isoc_pkt_actual_length) 3181 != USB_SUCCESS) { 3182 USB_DPRINTF_L3(PRINT_MASK_CB, 3183 usbvcp->usbvc_log_handle, "decode error"); 3184 } 3185 if (bufgrp->buf_filling && 3186 (bufgrp->buf_filling->status == USBVC_BUF_ERR || 3187 bufgrp->buf_filling->status == USBVC_BUF_DONE)) { 3188 3189 /* Move the buf to the full list */ 3190 list_insert_tail(&bufgrp->uv_buf_done, 3191 bufgrp->buf_filling); 3192 3193 bufgrp->buf_filling = NULL; 3194 3195 if (usbvcp->usbvc_io_type == V4L2_MEMORY_MMAP) { 3196 cv_broadcast(&usbvcp->usbvc_mapio_cv); 3197 } else { 3198 cv_broadcast(&usbvcp->usbvc_read_cv); 3199 } 3200 } 3201 } 3202 3203 data->b_rptr += isoc_req->isoc_pkt_descr[i].isoc_pkt_length; 3204 } 3205 mutex_exit(&usbvcp->usbvc_mutex); 3206 usb_free_isoc_req(isoc_req); 3207 } 3208 3209 3210 /*ARGSUSED*/ 3211 static void 3212 usbvc_isoc_exc_cb(usb_pipe_handle_t ph, usb_isoc_req_t *isoc_req) 3213 { 3214 usbvc_state_t *usbvcp = 3215 (usbvc_state_t *)isoc_req->isoc_client_private; 3216 usb_cr_t completion_reason; 3217 int rval; 3218 usbvc_stream_if_t *strm_if; 3219 3220 ASSERT(!list_is_empty(&usbvcp->usbvc_stream_list)); 3221 3222 mutex_enter(&usbvcp->usbvc_mutex); 3223 3224 /* get the first stream interface */ 3225 strm_if = usbvcp->usbvc_curr_strm; 3226 3227 completion_reason = isoc_req->isoc_completion_reason; 3228 3229 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3230 "usbvc_isoc_exc_cb: ph=0x%p, isoc_req=0x%p, cr=%d", 3231 (void *)ph, (void *)isoc_req, completion_reason); 3232 3233 ASSERT((isoc_req->isoc_cb_flags & USB_CB_INTR_CONTEXT) == 0); 3234 3235 switch (completion_reason) { 3236 case USB_CR_STOPPED_POLLING: 3237 case USB_CR_PIPE_CLOSING: 3238 case USB_CR_PIPE_RESET: 3239 3240 break; 3241 case USB_CR_NO_RESOURCES: 3242 /* 3243 * keep the show going: Since we have the original 3244 * request, we just resubmit it 3245 */ 3246 rval = usb_pipe_isoc_xfer(strm_if->datain_ph, isoc_req, 3247 USB_FLAGS_NOSLEEP); 3248 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3249 "usbvc_isoc_exc_cb: restart capture rval=%d", rval); 3250 mutex_exit(&usbvcp->usbvc_mutex); 3251 3252 return; 3253 default: 3254 mutex_exit(&usbvcp->usbvc_mutex); 3255 usb_pipe_stop_isoc_polling(ph, USB_FLAGS_NOSLEEP); 3256 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3257 "usbvc_isoc_exc_cb: stop polling"); 3258 mutex_enter(&usbvcp->usbvc_mutex); 3259 } 3260 usb_free_isoc_req(isoc_req); 3261 strm_if->start_polling = 0; 3262 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3263 "usbvc_isoc_exc_cb: start_polling=%d cr=%d", 3264 strm_if->start_polling, completion_reason); 3265 mutex_exit(&usbvcp->usbvc_mutex); 3266 } 3267 3268 /* 3269 * Other utility functions 3270 */ 3271 3272 /* 3273 * Find a proper alternate according to the bandwidth that the current video 3274 * format need; 3275 * Set alternate by calling usb_set_alt_if; 3276 * Called before open pipes in stream interface. 3277 */ 3278 static int 3279 usbvc_set_alt(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if) 3280 { 3281 usb_alt_if_data_t *alt; 3282 uint_t i, j, if_num; 3283 uint16_t pktsize, curr_pktsize; 3284 uint32_t bandwidth; 3285 int rval = USB_SUCCESS; 3286 usbvc_input_header_t *ihd; 3287 usbvc_output_header_t *ohd; 3288 3289 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 3290 3291 LE_TO_UINT32(strm_if->ctrl_pc.dwMaxPayloadTransferSize, 0, bandwidth); 3292 if (!bandwidth) { 3293 USB_DPRINTF_L2(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3294 "usbvc_set_alt: bandwidth is not set yet"); 3295 3296 return (USB_FAILURE); 3297 } 3298 USB_DPRINTF_L3(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3299 "usbvc_set_alt: bandwidth=%x", bandwidth); 3300 3301 strm_if->curr_ep = NULL; 3302 curr_pktsize = 0xffff; 3303 ohd = strm_if->output_header; 3304 ihd = strm_if->input_header; 3305 /* 3306 * Find one alternate setting whose isoc ep's max pktsize is just 3307 * enough for the bandwidth. 3308 */ 3309 for (i = 0; i < strm_if->if_descr->if_n_alt; i++) { 3310 alt = &strm_if->if_descr->if_alt[i]; 3311 3312 for (j = 0; j < alt->altif_n_ep; j++) { 3313 3314 /* if this stream interface is for input */ 3315 if (ihd != NULL && 3316 alt->altif_ep[j].ep_descr.bEndpointAddress != 3317 ihd->descr->bEndpointAddress) { 3318 3319 continue; 3320 } 3321 /* if this stream interface is for output */ 3322 if (ohd != NULL && 3323 alt->altif_ep[j].ep_descr.bEndpointAddress != 3324 ohd->descr->bEndpointAddress) { 3325 3326 continue; 3327 } 3328 pktsize = 3329 alt->altif_ep[j].ep_descr.wMaxPacketSize; 3330 pktsize = HS_PKT_SIZE(pktsize); 3331 if (pktsize >= bandwidth && pktsize < curr_pktsize) { 3332 curr_pktsize = pktsize; 3333 strm_if->curr_alt = i; 3334 strm_if->curr_ep = &alt->altif_ep[j].ep_descr; 3335 } 3336 } 3337 } 3338 if (!strm_if->curr_ep) { 3339 USB_DPRINTF_L2(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3340 "usbvc_set_alt: can't find a proper ep to satisfy" 3341 " the given bandwidth"); 3342 3343 return (USB_FAILURE); 3344 } 3345 USB_DPRINTF_L3(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3346 "usbvc_set_alt: strm_if->curr_alt=%d", strm_if->curr_alt); 3347 if_num = strm_if->if_descr->if_alt->altif_descr.bInterfaceNumber; 3348 mutex_exit(&usbvcp->usbvc_mutex); 3349 if ((rval = usb_set_alt_if(usbvcp->usbvc_dip, if_num, strm_if->curr_alt, 3350 USB_FLAGS_SLEEP, NULL, NULL)) != USB_SUCCESS) { 3351 mutex_enter(&usbvcp->usbvc_mutex); 3352 USB_DPRINTF_L2(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3353 "usbvc_set_alt: usb_set_alt_if fail, if.alt=%d.%d, rval=%d", 3354 if_num, strm_if->curr_alt, rval); 3355 3356 return (rval); 3357 } 3358 mutex_enter(&usbvcp->usbvc_mutex); 3359 3360 USB_DPRINTF_L4(PRINT_MASK_OPEN, usbvcp->usbvc_log_handle, 3361 "usbvc_set_alt: return, if_num=%d, alt=%d", 3362 if_num, strm_if->curr_alt); 3363 3364 return (rval); 3365 } 3366 3367 3368 /* 3369 * Decode stream header for mjpeg and uncompressed format video data. 3370 * mjpeg and uncompressed format have the same stream header. See their 3371 * payload spec, 2.2 and 2.4 3372 */ 3373 static int 3374 usbvc_decode_stream_header(usbvc_state_t *usbvcp, usbvc_buf_grp_t *bufgrp, 3375 mblk_t *data, int actual_len) 3376 { 3377 uint32_t len, buf_left, data_len; 3378 usbvc_stream_if_t *strm_if; 3379 uchar_t head_flag, head_len; 3380 usbvc_buf_t *buf_filling; 3381 3382 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 3383 USB_DPRINTF_L4(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3384 "usbvc_decode_stream_header: enter. actual_len=%x", actual_len); 3385 3386 /* header length check. */ 3387 if (actual_len < 2) { 3388 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3389 "usbvc_decode_stream_header: header is not completed"); 3390 3391 return (USB_FAILURE); 3392 } 3393 head_len = data->b_rptr[0]; 3394 head_flag = data->b_rptr[1]; 3395 3396 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3397 "usbvc_decode_stream_header: headlen=%x", head_len); 3398 3399 /* header length check. */ 3400 if (actual_len < head_len) { 3401 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3402 "usbvc_decode_stream_header: actual_len < head_len"); 3403 3404 return (USB_FAILURE); 3405 } 3406 3407 /* 3408 * If there is no stream data in this packet and this packet is not 3409 * used to indicate the end of a frame, then just skip it. 3410 */ 3411 if ((actual_len == head_len) && !(head_flag & USBVC_STREAM_EOF)) { 3412 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3413 "usbvc_decode_stream_header: only header, no data"); 3414 3415 return (USB_FAILURE); 3416 } 3417 3418 /* Get the first stream interface */ 3419 strm_if = usbvcp->usbvc_curr_strm; 3420 3421 LE_TO_UINT32(strm_if->ctrl_pc.dwMaxVideoFrameSize, 0, len); 3422 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3423 "usbvc_decode_stream_header: dwMaxVideoFrameSize=%x, head_flag=%x", 3424 len, head_flag); 3425 3426 /* 3427 * if no buf is filling, pick one buf from free list and alloc data 3428 * mem for the buf. 3429 */ 3430 if (!bufgrp->buf_filling) { 3431 if (list_is_empty(&bufgrp->uv_buf_free)) { 3432 strm_if->fid = head_flag & USBVC_STREAM_FID; 3433 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3434 "usbvc_decode_stream_header: free list are empty"); 3435 3436 return (USB_FAILURE); 3437 3438 } else { 3439 bufgrp->buf_filling = 3440 (usbvc_buf_t *)list_head(&bufgrp->uv_buf_free); 3441 3442 /* unlink from buf free list */ 3443 list_remove(&bufgrp->uv_buf_free, bufgrp->buf_filling); 3444 } 3445 bufgrp->buf_filling->filled = 0; 3446 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3447 "usbvc_decode_stream_header: status=%d", 3448 bufgrp->buf_filling->status); 3449 bufgrp->buf_filling->status = USBVC_BUF_EMPTY; 3450 } 3451 buf_filling = bufgrp->buf_filling; 3452 ASSERT(buf_filling->len >= buf_filling->filled); 3453 buf_left = buf_filling->len - buf_filling->filled; 3454 3455 /* if no buf room left, then return with a err status */ 3456 if (buf_left == 0) { 3457 /* buffer full, got an EOF packet(head only, no payload) */ 3458 if ((head_flag & USBVC_STREAM_EOF) && 3459 (actual_len == head_len)) { 3460 buf_filling->status = USBVC_BUF_DONE; 3461 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3462 "usbvc_decode_stream_header: got a EOF packet"); 3463 3464 return (USB_SUCCESS); 3465 } 3466 3467 /* Otherwise, mark the buf error and return failure */ 3468 buf_filling->status = USBVC_BUF_ERR; 3469 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3470 "usbvc_decode_stream_header: frame buf full"); 3471 3472 return (USB_FAILURE); 3473 } 3474 3475 /* get this sample's data length except header */ 3476 data_len = actual_len - head_len; 3477 USB_DPRINTF_L3(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3478 "usbvc_decode_stream_header: fid=%x, len=%x, filled=%x", 3479 strm_if->fid, buf_filling->len, buf_filling->filled); 3480 3481 /* if the first sample for a frame */ 3482 if (buf_filling->filled == 0) { 3483 /* 3484 * Only if it is the frist packet of a frame, 3485 * we will begin filling a frame. 3486 */ 3487 if (strm_if->fid != 0xff && strm_if->fid == 3488 (head_flag & USBVC_STREAM_FID)) { 3489 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3490 "usbvc_decode_stream_header: 1st sample of a frame," 3491 " fid is incorrect."); 3492 3493 return (USB_FAILURE); 3494 } 3495 strm_if->fid = head_flag & USBVC_STREAM_FID; 3496 3497 /* If in the middle of a frame, fid should be consistent. */ 3498 } else if (strm_if->fid != (head_flag & USBVC_STREAM_FID)) { 3499 USB_DPRINTF_L2(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3500 "usbvc_decode_stream_header: fid is incorrect."); 3501 strm_if->fid = head_flag & USBVC_STREAM_FID; 3502 buf_filling->status = USBVC_BUF_ERR; 3503 3504 return (USB_FAILURE); 3505 } 3506 if (data_len) { 3507 bcopy((void *)(data->b_rptr + head_len), 3508 (void *)(buf_filling->data + buf_filling->filled), 3509 min(data_len, buf_left)); 3510 3511 buf_filling->filled += min(data_len, buf_left); 3512 } 3513 3514 /* If the last packet for this frame */ 3515 if (head_flag & USBVC_STREAM_EOF) { 3516 buf_filling->status = USBVC_BUF_DONE; 3517 } 3518 if (data_len > buf_left) { 3519 buf_filling->status = USBVC_BUF_ERR; 3520 } 3521 USB_DPRINTF_L4(PRINT_MASK_CB, usbvcp->usbvc_log_handle, 3522 "usbvc_decode_stream_header: buf_status=%d", buf_filling->status); 3523 3524 return (USB_SUCCESS); 3525 } 3526 3527 3528 /* 3529 * usbvc_serialize_access: 3530 * Get the serial synchronization object before returning. 3531 * 3532 * Arguments: 3533 * usbvcp - Pointer to usbvc state structure 3534 * waitsig - Set to: 3535 * USBVC_SER_SIG - to wait such that a signal can interrupt 3536 * USBVC_SER_NOSIG - to wait such that a signal cannot interrupt 3537 */ 3538 static int 3539 usbvc_serialize_access(usbvc_state_t *usbvcp, boolean_t waitsig) 3540 { 3541 int rval = 1; 3542 3543 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 3544 3545 while (usbvcp->usbvc_serial_inuse) { 3546 if (waitsig == USBVC_SER_SIG) { 3547 rval = cv_wait_sig(&usbvcp->usbvc_serial_cv, 3548 &usbvcp->usbvc_mutex); 3549 } else { 3550 cv_wait(&usbvcp->usbvc_serial_cv, 3551 &usbvcp->usbvc_mutex); 3552 } 3553 } 3554 usbvcp->usbvc_serial_inuse = B_TRUE; 3555 3556 return (rval); 3557 } 3558 3559 3560 /* 3561 * usbvc_release_access: 3562 * Release the serial synchronization object. 3563 */ 3564 static void 3565 usbvc_release_access(usbvc_state_t *usbvcp) 3566 { 3567 ASSERT(mutex_owned(&usbvcp->usbvc_mutex)); 3568 usbvcp->usbvc_serial_inuse = B_FALSE; 3569 cv_broadcast(&usbvcp->usbvc_serial_cv); 3570 } 3571 3572 3573 /* Send req to video control interface to get ctrl */ 3574 int 3575 usbvc_vc_get_ctrl(usbvc_state_t *usbvcp, uint8_t req_code, uint8_t entity_id, 3576 uint16_t cs, uint16_t wlength, mblk_t *data) 3577 { 3578 usb_cb_flags_t cb_flags; 3579 usb_cr_t cr; 3580 usb_ctrl_setup_t setup; 3581 3582 setup.bmRequestType = USBVC_GET_IF; /* bmRequestType */ 3583 setup.bRequest = req_code; /* bRequest */ 3584 setup.wValue = cs<<8; 3585 setup.wIndex = entity_id<<8; 3586 setup.wLength = wlength; 3587 setup.attrs = 0; 3588 3589 if (usb_pipe_ctrl_xfer_wait(usbvcp->usbvc_default_ph, &setup, &data, 3590 &cr, &cb_flags, 0) != USB_SUCCESS) { 3591 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3592 "usbvc_vc_get_ctrl: cmd failed, cr=%d, cb_flags=%x", 3593 cr, cb_flags); 3594 3595 return (USB_FAILURE); 3596 } 3597 3598 return (USB_SUCCESS); 3599 } 3600 3601 3602 /* Send req to video control interface to get ctrl */ 3603 int 3604 usbvc_vc_set_ctrl(usbvc_state_t *usbvcp, uint8_t req_code, uint8_t entity_id, 3605 uint16_t cs, uint16_t wlength, mblk_t *data) 3606 { 3607 usb_cb_flags_t cb_flags; 3608 usb_cr_t cr; 3609 usb_ctrl_setup_t setup; 3610 3611 setup.bmRequestType = USBVC_SET_IF; /* bmRequestType */ 3612 setup.bRequest = req_code; /* bRequest */ 3613 setup.wValue = cs<<8; 3614 setup.wIndex = entity_id<<8; 3615 setup.wLength = wlength; 3616 setup.attrs = 0; 3617 3618 if (usb_pipe_ctrl_xfer_wait(usbvcp->usbvc_default_ph, &setup, &data, 3619 &cr, &cb_flags, 0) != USB_SUCCESS) { 3620 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3621 "usbvc_vc_set_ctrl: cmd failed, cr=%d, cb_flags=%x", 3622 cr, cb_flags); 3623 3624 return (USB_FAILURE); 3625 } 3626 3627 return (USB_SUCCESS); 3628 } 3629 3630 3631 /* Set probe or commit ctrl for video stream interface */ 3632 int 3633 usbvc_vs_set_probe_commit(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if, 3634 usbvc_vs_probe_commit_t *ctrl_pc, uchar_t cs) 3635 { 3636 mblk_t *data; 3637 usb_cb_flags_t cb_flags; 3638 usb_cr_t cr; 3639 usb_ctrl_setup_t setup; 3640 int rval; 3641 3642 setup.bmRequestType = USBVC_SET_IF; /* bmRequestType */ 3643 setup.bRequest = SET_CUR; /* bRequest */ 3644 3645 /* wValue, VS_PROBE_CONTROL or VS_COMMIT_CONTROL */ 3646 setup.wValue = cs; 3647 3648 /* UVC Spec: this value must be put to the high byte */ 3649 setup.wValue = setup.wValue << 8; 3650 3651 setup.wIndex = strm_if->if_descr->if_alt->altif_descr.bInterfaceNumber; 3652 setup.wLength = usbvcp->usbvc_vc_header->descr->bcdUVC[0] ? 34 : 26; 3653 setup.attrs = 0; 3654 3655 USB_DPRINTF_L3(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3656 "usbvc_vs_set_probe_commit: wLength=%d", setup.wLength); 3657 3658 /* Data block */ 3659 if ((data = allocb(setup.wLength, BPRI_HI)) == NULL) { 3660 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3661 "usbvc_vs_set_probe_commit: allocb failed"); 3662 3663 return (USB_FAILURE); 3664 } 3665 3666 bcopy(ctrl_pc, data->b_rptr, setup.wLength); 3667 data->b_wptr += setup.wLength; 3668 3669 if ((rval = usb_pipe_ctrl_xfer_wait(usbvcp->usbvc_default_ph, &setup, 3670 &data, &cr, &cb_flags, 0)) != USB_SUCCESS) { 3671 if (data) { 3672 freemsg(data); 3673 } 3674 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3675 "usbvc_vs_set_probe_commit: fail, rval=%d, cr=%d, " 3676 "cb_flags=%x", rval, cr, cb_flags); 3677 3678 return (rval); 3679 } 3680 if (data) { 3681 freemsg(data); 3682 } 3683 3684 return (USB_SUCCESS); 3685 } 3686 3687 3688 /* Get probe ctrl for vodeo stream interface */ 3689 int 3690 usbvc_vs_get_probe(usbvc_state_t *usbvcp, usbvc_stream_if_t *strm_if, 3691 usbvc_vs_probe_commit_t *ctrl_pc, uchar_t bRequest) 3692 { 3693 mblk_t *data = NULL; 3694 usb_cb_flags_t cb_flags; 3695 usb_cr_t cr; 3696 usb_ctrl_setup_t setup; 3697 3698 setup.bmRequestType = USBVC_GET_IF; /* bmRequestType */ 3699 setup.bRequest = bRequest; /* bRequest */ 3700 setup.wValue = VS_PROBE_CONTROL; /* wValue, PROBE or COMMIT */ 3701 setup.wValue = setup.wValue << 8; 3702 setup.wIndex = 3703 (uint16_t)strm_if->if_descr->if_alt->altif_descr.bInterfaceNumber; 3704 setup.wLength = usbvcp->usbvc_vc_header->descr->bcdUVC[0] ? 34 : 26; 3705 3706 setup.attrs = 0; 3707 3708 if (usb_pipe_ctrl_xfer_wait(usbvcp->usbvc_default_ph, &setup, &data, 3709 &cr, &cb_flags, 0) != USB_SUCCESS) { 3710 if (data) { 3711 freemsg(data); 3712 } 3713 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3714 "usbvc_vs_get_probe: cmd failed, cr=%d, cb_flags=%x", 3715 cr, cb_flags); 3716 3717 return (USB_FAILURE); 3718 } 3719 bcopy(data->b_rptr, ctrl_pc, setup.wLength); 3720 if (data) { 3721 freemsg(data); 3722 } 3723 3724 return (USB_SUCCESS); 3725 } 3726 3727 3728 /* Set a default format when open the device */ 3729 static int 3730 usbvc_set_default_stream_fmt(usbvc_state_t *usbvcp) 3731 { 3732 usbvc_vs_probe_commit_t ctrl, ctrl_get; 3733 usbvc_stream_if_t *strm_if; 3734 usbvc_format_group_t *curr_fmtgrp; 3735 uint32_t bandwidth; 3736 uint8_t index, i; 3737 3738 USB_DPRINTF_L4(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3739 "usbvc_set_default_stream_fmt: enter"); 3740 3741 mutex_enter(&usbvcp->usbvc_mutex); 3742 if (list_is_empty(&usbvcp->usbvc_stream_list)) { 3743 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3744 "usbvc_set_default_stream_fmt: no stream interface, fail"); 3745 mutex_exit(&usbvcp->usbvc_mutex); 3746 3747 return (USB_FAILURE); 3748 } 3749 bzero((void *)&ctrl, sizeof (usbvc_vs_probe_commit_t)); 3750 3751 /* Get the current stream interface */ 3752 strm_if = usbvcp->usbvc_curr_strm; 3753 3754 /* Fill the probe commit req data */ 3755 ctrl.bmHint[0] = 0; 3756 3757 for (i = 0; i < strm_if->fmtgrp_cnt; i++) { 3758 curr_fmtgrp = &strm_if->format_group[i]; 3759 3760 /* 3761 * If v4l2_pixelformat is NULL, then that means there is not 3762 * a parsed format in format_group[i]. 3763 */ 3764 if (!curr_fmtgrp || !curr_fmtgrp->v4l2_pixelformat || 3765 curr_fmtgrp->frame_cnt == 0) { 3766 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, 3767 usbvcp->usbvc_log_handle, 3768 "usbvc_set_default_stream_fmt: no frame, fail"); 3769 3770 continue; 3771 } else { 3772 3773 break; 3774 } 3775 } 3776 if (!curr_fmtgrp || curr_fmtgrp->frame_cnt == 0) { 3777 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3778 "usbvc_set_default_stream_fmt: can't find a fmtgrp" 3779 "which has a frame, fail"); 3780 mutex_exit(&usbvcp->usbvc_mutex); 3781 3782 return (USB_FAILURE); 3783 } 3784 3785 ctrl.bFormatIndex = curr_fmtgrp->format->bFormatIndex; 3786 3787 /* use the first frame descr as default */ 3788 ctrl.bFrameIndex = curr_fmtgrp->frames[0].descr->bFrameIndex; 3789 3790 /* use bcopy to keep the byte sequence as 32 bit little endian */ 3791 bcopy(&(curr_fmtgrp->frames[0].descr->dwDefaultFrameInterval[0]), 3792 &(ctrl.dwFrameInterval[0]), 4); 3793 3794 mutex_exit(&usbvcp->usbvc_mutex); 3795 if (usbvc_vs_set_probe_commit(usbvcp, strm_if, &ctrl, VS_PROBE_CONTROL) 3796 != USB_SUCCESS) { 3797 3798 return (USB_FAILURE); 3799 } 3800 if (usbvc_vs_get_probe(usbvcp, strm_if, &ctrl_get, GET_CUR) 3801 != USB_SUCCESS) { 3802 3803 return (USB_FAILURE); 3804 } 3805 3806 mutex_enter(&usbvcp->usbvc_mutex); 3807 LE_TO_UINT32(strm_if->ctrl_pc.dwMaxPayloadTransferSize, 0, bandwidth); 3808 USB_DPRINTF_L3(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3809 "usbvc_set_default_stream_fmt: get bandwidth=%x", bandwidth); 3810 3811 mutex_exit(&usbvcp->usbvc_mutex); 3812 if (usbvc_vs_set_probe_commit(usbvcp, strm_if, &ctrl_get, 3813 VS_COMMIT_CONTROL) != USB_SUCCESS) { 3814 3815 return (USB_FAILURE); 3816 } 3817 3818 mutex_enter(&usbvcp->usbvc_mutex); 3819 3820 /* it's good to check index here before use it */ 3821 index = ctrl_get.bFormatIndex - curr_fmtgrp->format->bFormatIndex; 3822 if (index < strm_if->fmtgrp_cnt) { 3823 strm_if->cur_format_group = &strm_if->format_group[index]; 3824 } else { 3825 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3826 "usbvc_set_default_stream_fmt: format index out of range"); 3827 mutex_exit(&usbvcp->usbvc_mutex); 3828 3829 return (USB_FAILURE); 3830 } 3831 3832 index = ctrl_get.bFrameIndex - 3833 strm_if->cur_format_group->frames[0].descr->bFrameIndex; 3834 if (index < strm_if->cur_format_group->frame_cnt) { 3835 strm_if->cur_format_group->cur_frame = 3836 &strm_if->cur_format_group->frames[index]; 3837 } else { 3838 USB_DPRINTF_L2(PRINT_MASK_DEVCTRL, usbvcp->usbvc_log_handle, 3839 "usbvc_set_default_stream: frame index out of range"); 3840 mutex_exit(&usbvcp->usbvc_mutex); 3841 3842 return (USB_FAILURE); 3843 } 3844 3845 /* 3846 * by now, the video format is set successfully. record the current 3847 * setting to strm_if->ctrl_pc 3848 */ 3849 bcopy(&ctrl_get, &strm_if->ctrl_pc, sizeof (usbvc_vs_probe_commit_t)); 3850 3851 mutex_exit(&usbvcp->usbvc_mutex); 3852 3853 return (USB_SUCCESS); 3854 } 3855
Indexes created Wed Feb 10 04:24:43 UTC 2010
Terms of Use |
Privacy |
Trademarks |
Copyright Policy |
Site Guidelines |
Site Map |
Help
Your use of this web site or any of its content or software indicates your agreement to be bound by these Terms of Use.
© 2010, Oracle Corporation and/or its affiliates
