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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Console kbd multiplexor driver for Sun. 31 * The console "zs" port is linked under us, with the "kbd" module pushed 32 * on top of it. 33 * Minor device 0 is what programs normally use. 34 * Minor device 1 is used to feed predigested keystrokes to the "workstation 35 * console" driver, which it is linked beneath. 36 * 37 * 38 * This module can support multiple keyboards to be used simultaneously. 39 * and enable users to use at a time multiple keyboards connected to the 40 * same system. All the keyboards are linked under conskbd, and act as a 41 * keyboard with replicated keys. 42 * 43 * The DIN keyboards of SUN, for exmple , type 3/4/5, are supported via 44 * a two-level architecure. The lower one is one of serialport drivers, such 45 * as zs, se, and the upper is "kb" STREAMS module. Currenly, the serialport 46 * drivers don't support polled I/O interfaces, we couldn't group the keyboard 47 * of this kind under conskbd. So we do as the follows: 48 * 49 * A new ioctl CONSSETKBDTYPE interface between conskbd and lower 50 * keyboard drivers is added. When conskbd receives I_LINK or I_PLINK 51 * ioctl, it will send a CONSSETKBDTYPE ioctl to the driver which is 52 * requesting to be linked under conskbd. If the lower driver does't 53 * recognize this ioctl, the virtual keyboard will be disabled so that 54 * only one keyboard instance could be linked under conskbd. 55 */ 56 #define KEYMAP_SIZE_VARIABLE 57 58 #include <sys/types.h> 59 #include <sys/param.h> 60 #include <sys/stropts.h> 61 #include <sys/stream.h> 62 #include <sys/strsubr.h> 63 #include <sys/strsun.h> 64 #include <sys/conf.h> 65 #include <sys/stat.h> 66 #include <sys/errno.h> 67 #include <sys/modctl.h> 68 #include <sys/kbio.h> 69 #include <sys/ddi.h> 70 #include <sys/sunddi.h> 71 #include <sys/consdev.h> 72 #include <sys/note.h> 73 #include <sys/kmem.h> 74 #include <sys/kstat.h> 75 #include <sys/policy.h> 76 #include <sys/kbd.h> 77 #include <sys/kbtrans.h> 78 #include <sys/promif.h> 79 #include <sys/vuid_event.h> 80 #include <sys/conskbd.h> 81 82 extern struct keyboard *kbtrans_usbkb_maptab_init(void); 83 extern void kbtrans_usbkb_maptab_fini(struct keyboard **); 84 extern int ddi_create_internal_pathname(dev_info_t *, char *, int, minor_t); 85 86 /* 87 * Module linkage routines for the kernel 88 */ 89 static int conskbd_attach(dev_info_t *, ddi_attach_cmd_t); 90 static int conskbd_detach(dev_info_t *, ddi_detach_cmd_t); 91 static int conskbd_info(dev_info_t *, ddi_info_cmd_t, void *, void **); 92 93 /* 94 * STREAMS queue processing procedures 95 */ 96 static void conskbduwsrv(queue_t *); 97 static void conskbdlwserv(queue_t *); 98 static void conskbdlrput(queue_t *, mblk_t *); 99 static void conskbdioctl(queue_t *, mblk_t *); 100 static int conskbdclose(queue_t *, int, cred_t *); 101 static int conskbdopen(queue_t *, dev_t *, int, int, cred_t *); 102 103 104 /* STREAMS driver id and limit value struct */ 105 static struct module_info conskbdm_info = { 106 0, /* mi_idnum */ 107 "conskbd", /* mi_idname */ 108 0, /* mi_minpsz */ 109 1024, /* mi_maxpsz */ 110 2048, /* mi_hiwat */ 111 128 /* mi_lowat */ 112 }; 113 114 /* 115 * STREAMS queue processing procedure structures 116 */ 117 /* upper read queue processing procedure structures */ 118 static struct qinit conskbdurinit = { 119 NULL, /* qi_putp */ 120 (int (*)())NULL, /* qi_srvp */ 121 conskbdopen, /* qi_qopen */ 122 conskbdclose, /* qi_qclose */ 123 (int (*)())NULL, /* qi_qadmin */ 124 &conskbdm_info, /* qi_minfo */ 125 NULL /* qi_mstat */ 126 }; 127 128 /* upper write queue processing procedures structuresi */ 129 static struct qinit conskbduwinit = { 130 (int (*)())putq, /* qi_putp */ 131 (int (*)())conskbduwsrv, /* qi_srvp */ 132 conskbdopen, /* qi_qopen */ 133 conskbdclose, /* qi_qclose */ 134 (int (*)())NULL, /* qi_qadmin */ 135 &conskbdm_info, /* qi_minfo */ 136 NULL /* qi_mstat */ 137 }; 138 139 /* lower read queue processing procedures structures */ 140 static struct qinit conskbdlrinit = { 141 (int (*)())conskbdlrput, /* qi_putp */ 142 (int (*)())NULL, /* qi_srvp */ 143 (int (*)())NULL, /* qi_qopen */ 144 (int (*)())NULL, /* qi_qclose */ 145 (int (*)())NULL, /* qi_qadmin */ 146 &conskbdm_info, /* qi_minfo */ 147 NULL /* qi_mstat */ 148 }; 149 150 /* lower write processing procedures structures */ 151 static struct qinit conskbdlwinit = { 152 putq, /* qi_putp */ 153 (int (*)())conskbdlwserv, /* qi_srvp */ 154 (int (*)())NULL, /* qi_qopen */ 155 (int (*)())NULL, /* qi_qclose */ 156 (int (*)())NULL, /* qi_qadmin */ 157 &conskbdm_info, /* qi_minfo */ 158 NULL /* qi_mstat */ 159 }; 160 161 /* STREAMS entity declaration structure */ 162 static struct streamtab conskbd_str_info = { 163 &conskbdurinit, /* st_rdinit */ 164 &conskbduwinit, /* st_wrinit */ 165 &conskbdlrinit, /* st_muxrinit */ 166 &conskbdlwinit, /* st_muxwinit */ 167 }; 168 169 170 /* Entry points structure */ 171 static struct cb_ops cb_conskbd_ops = { 172 nulldev, /* cb_open */ 173 nulldev, /* cb_close */ 174 nodev, /* cb_strategy */ 175 nodev, /* cb_print */ 176 nodev, /* cb_dump */ 177 nodev, /* cb_read */ 178 nodev, /* cb_write */ 179 nodev, /* cb_ioctl */ 180 nodev, /* cb_devmap */ 181 nodev, /* cb_mmap */ 182 nodev, /* cb_segmap */ 183 nochpoll, /* cb_chpoll */ 184 ddi_prop_op, /* cb_prop_op */ 185 &conskbd_str_info, /* cb_stream */ 186 D_MP | D_MTOUTPERIM /* cb_flag */ 187 }; 188 189 190 /* 191 * Device operations structure 192 */ 193 static struct dev_ops conskbd_ops = { 194 DEVO_REV, /* devo_rev */ 195 0, /* devo_refcnt */ 196 conskbd_info, /* devo_getinfo */ 197 nulldev, /* devo_identify */ 198 nulldev, /* devo_probe */ 199 conskbd_attach, /* devo_attach */ 200 conskbd_detach, /* devo_detach */ 201 nodev, /* devo_reset */ 202 &(cb_conskbd_ops), /* devo_cb_ops */ 203 (struct bus_ops *)NULL, /* devo_bus_ops */ 204 NULL /* devo_power */ 205 }; 206 207 /* 208 * Module linkage information for the kernel. 209 */ 210 static struct modldrv modldrv = { 211 &mod_driverops, /* Type of module. This one is a pseudo driver */ 212 "Console kbd Multiplexer driver 'conskbd' %I%", 213 &conskbd_ops, /* driver ops */ 214 }; 215 216 /* 217 * Module linkage structure 218 */ 219 static struct modlinkage modlinkage = { 220 MODREV_1, /* ml_rev */ 221 &modldrv, /* ml_linkage */ 222 NULL /* NULL terminates the list */ 223 }; 224 225 /* 226 * Debug printing 227 */ 228 #ifndef DPRINTF 229 #ifdef DEBUG 230 void conskbd_dprintf(const char *fmt, ...); 231 #define DPRINTF(l, m, args) \ 232 (((l) >= conskbd_errlevel) && ((m) & conskbd_errmask) ? \ 233 conskbd_dprintf args : \ 234 (void) 0) 235 236 /* 237 * Severity levels for printing 238 */ 239 #define PRINT_L0 0 /* print every message */ 240 #define PRINT_L1 1 /* debug */ 241 #define PRINT_L2 2 /* quiet */ 242 243 /* 244 * Masks 245 */ 246 #define PRINT_MASK_ALL 0xFFFFFFFFU 247 uint_t conskbd_errmask = PRINT_MASK_ALL; 248 uint_t conskbd_errlevel = PRINT_L2; 249 250 #else 251 #define DPRINTF(l, m, args) /* NOTHING */ 252 #endif 253 #endif 254 255 /* 256 * Module global data are protected by the per-module inner perimeter 257 */ 258 static queue_t *conskbd_regqueue; /* regular keyboard queue above us */ 259 static queue_t *conskbd_consqueue; /* console queue above us */ 260 261 262 static dev_info_t *conskbd_dip; /* private copy of devinfo pointer */ 263 static long conskbd_idle_stamp; /* seconds tstamp of latest keystroke */ 264 static struct keyboard *conskbd_keyindex; 265 266 /* 267 * Normally, kstats of type KSTAT_TYPE_NAMED have multiple elements. In 268 * this case we use this type for a single element because the ioctl code 269 * for it knows how to handle mixed kernel/user data models. Also, it 270 * will be easier to add new statistics later. 271 */ 272 static struct { 273 kstat_named_t idle_sec; /* seconds since last keystroke */ 274 } conskbd_kstat = { 275 { "idle_sec", KSTAT_DATA_LONG, } 276 }; 277 278 /* 279 * Local routines prototypes 280 */ 281 static int conskbd_kstat_update(kstat_t *, int); 282 283 static void conskbd_ioc_plink(queue_t *, mblk_t *); 284 static void conskbd_legacy_kbd_ioctl(queue_t *, mblk_t *); 285 static void conskbd_virtual_kbd_ioctl(queue_t *, mblk_t *); 286 287 static conskbd_pending_msg_t *conskbd_mux_find_msg(mblk_t *); 288 static void conskbd_mux_enqueue_msg(conskbd_pending_msg_t *); 289 static void conskbd_mux_dequeue_msg(conskbd_pending_msg_t *); 290 static void conskbd_link_lower_queue(conskbd_lower_queue_t *); 291 292 static void conskbd_handle_downstream_msg(queue_t *, mblk_t *); 293 static void conskbd_kioctype_complete(conskbd_lower_queue_t *, mblk_t *); 294 static void conskbd_kioctrans_complete(conskbd_lower_queue_t *, mblk_t *); 295 static void conskbd_kioclayout_complete(conskbd_lower_queue_t *, mblk_t *); 296 static void conskbd_kiocsled_complete(conskbd_lower_queue_t *, mblk_t *); 297 static void conskbd_mux_upstream_msg(conskbd_lower_queue_t *, mblk_t *); 298 static void conskbd_legacy_upstream_msg(conskbd_lower_queue_t *, mblk_t *); 299 static void conskbd_lqs_ack_complete(conskbd_lower_queue_t *, mblk_t *); 300 301 static void conskbd_polledio_enter(struct cons_polledio_arg *); 302 static void conskbd_polledio_exit(struct cons_polledio_arg *); 303 static int conskbd_polledio_ischar(struct cons_polledio_arg *); 304 static int conskbd_polledio_getchar(struct cons_polledio_arg *); 305 static void conskbd_polledio_setled(struct kbtrans_hardware *, int); 306 307 static void conskbd_streams_setled(struct kbtrans_hardware *, int); 308 static boolean_t conskbd_override_kbtrans(queue_t *, mblk_t *); 309 static boolean_t 310 conskbd_polled_keycheck(struct kbtrans_hardware *, 311 kbtrans_key_t *, enum keystate *); 312 313 /* 314 * Callbacks needed by kbtrans 315 */ 316 static struct kbtrans_callbacks conskbd_callbacks = { 317 conskbd_streams_setled, 318 conskbd_polledio_setled, 319 conskbd_polled_keycheck, 320 }; 321 322 /* 323 * Single private "global" lock for the few rare conditions 324 * we want single-threaded. 325 */ 326 static kmutex_t conskbd_lq_lock; 327 static kmutex_t conskbd_msgq_lock; 328 static conskbd_pending_msg_t *conskbd_msg_queue; 329 330 /* 331 * The software state structure of virtual keyboard. 332 * Currently, only one virtual keyboard is support. 333 */ 334 static conskbd_state_t conskbd = { 0 }; 335 336 /* 337 * _init() 338 * 339 * Description: 340 * Driver initialization, called when driver is first loaded. 341 * This is how access is initially given to all the static structures. 342 * 343 * Arguments: 344 * None 345 * 346 * Returns: 347 * ddi_soft_state_init() status, see ddi_soft_state_init(9f), or 348 * mod_install() status, see mod_install(9f) 349 */ 350 int 351 _init(void) 352 { 353 int error; 354 355 error = mod_install(&modlinkage); 356 if (error != 0) { 357 return (error); 358 } 359 360 conskbd_keyindex = kbtrans_usbkb_maptab_init(); 361 362 mutex_init(&conskbd_lq_lock, NULL, MUTEX_DRIVER, NULL); 363 mutex_init(&conskbd_msgq_lock, NULL, MUTEX_DRIVER, NULL); 364 365 return (error); 366 367 } /* _init() */ 368 369 /* 370 * _fini() 371 * 372 * Description: 373 * Module de-initialization, called when the driver is to be unloaded. 374 * 375 * Arguments: 376 * None 377 * 378 * Returns: 379 * mod_remove() status, see mod_remove(9f) 380 */ 381 int 382 _fini(void) 383 { 384 int error; 385 386 error = mod_remove(&modlinkage); 387 if (error != 0) 388 return (error); 389 mutex_destroy(&conskbd_lq_lock); 390 mutex_destroy(&conskbd_msgq_lock); 391 kbtrans_usbkb_maptab_fini(&conskbd_keyindex); 392 393 return (0); 394 395 } /* _fini() */ 396 397 /* 398 * _info() 399 * 400 * Description: 401 * Module information, returns information about the driver. 402 * 403 * Arguments: 404 * modinfo *modinfop Pointer to the opaque modinfo structure 405 * 406 * Returns: 407 * mod_info() status, see mod_info(9f) 408 */ 409 int 410 _info(struct modinfo *modinfop) 411 { 412 return (mod_info(&modlinkage, modinfop)); 413 414 } /* _info() */ 415 416 417 /* 418 * conskbd_attach() 419 * 420 * Description: 421 * This routine creates two device nodes. One is the "kbd" node, which 422 * is used by user application programs(such as Xserver).The other is the 423 * "conskbd" node, which is an internal node. consconfig_dacf module will 424 * open this internal node, and link the conskbd under the wc (workstaion 425 * console). 426 * 427 * Arguments: 428 * dev_info_t *dip Pointer to the device's dev_info struct 429 * ddi_attach_cmd_t cmd Attach command 430 * 431 * Returns: 432 * DDI_SUCCESS The driver was initialized properly 433 * DDI_FAILURE The driver couldn't be initialized properly 434 */ 435 /*ARGSUSED*/ 436 static int 437 conskbd_attach(dev_info_t *devi, ddi_attach_cmd_t cmd) 438 { 439 kstat_t *ksp; 440 441 switch (cmd) { 442 case DDI_ATTACH: 443 break; 444 445 default: 446 return (DDI_FAILURE); 447 448 } 449 if ((ddi_create_minor_node(devi, "kbd", S_IFCHR, 450 0, DDI_PSEUDO, NULL) == DDI_FAILURE) || 451 (ddi_create_internal_pathname(devi, "conskbd", S_IFCHR, 452 1) == DDI_FAILURE)) { 453 ddi_remove_minor_node(devi, NULL); 454 return (DDI_FAILURE); 455 } 456 conskbd_dip = devi; 457 458 ksp = kstat_create("conskbd", 0, "activity", "misc", KSTAT_TYPE_NAMED, 459 sizeof (conskbd_kstat) / sizeof (kstat_named_t), 460 KSTAT_FLAG_VIRTUAL); 461 if (ksp) { 462 ksp->ks_data = (void *) &conskbd_kstat; 463 ksp->ks_update = conskbd_kstat_update; 464 kstat_install(ksp); 465 conskbd_idle_stamp = gethrestime_sec(); /* initial value */ 466 } 467 468 conskbd.conskbd_layout = -1; /* invalid layout */ 469 conskbd.conskbd_led_state = -1; 470 conskbd.conskbd_bypassed = B_FALSE; 471 472 return (DDI_SUCCESS); 473 474 } /* conskbd_attach() */ 475 476 /* 477 * conskbd_detach() 478 * 479 * Description: 480 * Detach an instance of the conskbd driver. In fact, the driver can not 481 * be detached. 482 * 483 * Arguments: 484 * dev_info_t *dip Pointer to the device's dev_info struct 485 * ddi_detach_cmd_t cmd Detach command 486 * 487 * Returns: 488 * DDI_SUCCESS The driver was detached 489 * DDI_FAILURE The driver couldn't be detached 490 */ 491 /*ARGSUSED*/ 492 static int 493 conskbd_detach(dev_info_t *devi, ddi_detach_cmd_t cmd) 494 { 495 return (DDI_FAILURE); 496 497 } /* conskbd_detach() */ 498 499 /* ARGSUSED */ 500 static int 501 conskbd_info(dev_info_t *dip, ddi_info_cmd_t infocmd, void *arg, 502 void **result) 503 { 504 register int error; 505 506 switch (infocmd) { 507 case DDI_INFO_DEVT2DEVINFO: 508 if (conskbd_dip == NULL) { 509 error = DDI_FAILURE; 510 } else { 511 *result = (void *) conskbd_dip; 512 error = DDI_SUCCESS; 513 } 514 break; 515 case DDI_INFO_DEVT2INSTANCE: 516 *result = (void *)0; 517 error = DDI_SUCCESS; 518 break; 519 default: 520 error = DDI_FAILURE; 521 } 522 return (error); 523 524 } /* conskbd_info() */ 525 526 /*ARGSUSED*/ 527 static int 528 conskbdopen(queue_t *q, dev_t *devp, int flag, int sflag, cred_t *crp) 529 { 530 dev_t unit; 531 int err; 532 533 unit = getminor(*devp); 534 535 if (unit == 0) { 536 /* 537 * Opening "/dev/kbd". 538 */ 539 conskbd_regqueue = q; 540 qprocson(q); 541 return (0); 542 } else if (unit != 1) { 543 /* we don't do that under Bozo's Big Tent */ 544 return (ENODEV); 545 } 546 547 /* 548 * Opening the device to be linked under the console. 549 */ 550 conskbd_consqueue = q; 551 552 /* 553 * initialzie kbtrans module for conskbd 554 */ 555 err = kbtrans_streams_init(q, sflag, crp, (struct kbtrans_hardware *) 556 &conskbd, &conskbd_callbacks, &conskbd.conskbd_kbtrans, 0, 0); 557 if (err != 0) 558 return (err); 559 kbtrans_streams_set_keyboard(conskbd.conskbd_kbtrans, KB_USB, 560 conskbd_keyindex); 561 562 conskbd.conskbd_polledio.cons_polledio_version = CONSPOLLEDIO_V1; 563 conskbd.conskbd_polledio.cons_polledio_argument = 564 (struct cons_polledio_arg *)&conskbd; 565 conskbd.conskbd_polledio.cons_polledio_putchar = NULL; 566 conskbd.conskbd_polledio.cons_polledio_getchar = 567 (int (*)(struct cons_polledio_arg *)) conskbd_polledio_getchar; 568 conskbd.conskbd_polledio.cons_polledio_ischar = 569 (boolean_t (*)(struct cons_polledio_arg *))conskbd_polledio_ischar; 570 conskbd.conskbd_polledio.cons_polledio_enter = conskbd_polledio_enter; 571 conskbd.conskbd_polledio.cons_polledio_exit = conskbd_polledio_exit; 572 qprocson(q); 573 kbtrans_streams_enable(conskbd.conskbd_kbtrans); 574 575 return (0); 576 577 } /* conskbd_open() */ 578 579 580 /*ARGSUSED*/ 581 static int 582 conskbdclose(queue_t *q, int flag, cred_t *crp) 583 { 584 if (q == conskbd_regqueue) { 585 586 /* switch the input stream back to conskbd_consqueue */ 587 conskbd.conskbd_directio = B_FALSE; 588 589 kbtrans_streams_untimeout(conskbd.conskbd_kbtrans); 590 kbtrans_streams_set_queue(conskbd.conskbd_kbtrans, 591 conskbd_consqueue); 592 qprocsoff(q); 593 conskbd_regqueue = NULL; 594 } else if (q == conskbd_consqueue) { 595 /* 596 * Well, this is probably a mistake, but we will permit you 597 * to close the path to the console if you really insist. 598 */ 599 qprocsoff(q); 600 conskbd_consqueue = NULL; 601 } 602 603 return (0); 604 605 } /* conskbd_close() */ 606 607 /* 608 * Service procedure for upper write queue. 609 * To make sure the order of messages, we don't process any 610 * message in qi_putq() routine of upper write queue, instead the 611 * qi_putq() routine, which is a standard putq() routine, puts all 612 * messages into a queue, and lets the following service procedure 613 * deal with all messages. 614 * This routine is invoked when ioctl commands are send down 615 * by a consumer of the keyboard device, eg, when the keyboard 616 * consumer tries to determine the keyboard layout type, or sets 617 * the led states. 618 */ 619 static void 620 conskbduwsrv(queue_t *q) 621 { 622 mblk_t *mp; 623 queue_t *oldq; 624 enum kbtrans_message_response ret; 625 626 while ((mp = getq(q)) != NULL) { 627 628 /* 629 * if the virtual keyboard is supported 630 */ 631 if (conskbd.conskbd_bypassed == B_FALSE) { 632 633 if (conskbd_override_kbtrans(q, mp) == B_TRUE) 634 continue; 635 /* 636 * The conskbd driver is a psaudo driver. It has two 637 * devcice nodes, one is used by kernel, and the other 638 * is used by end-users. There are two STREAMS queues 639 * corresponding to the two device nodes, console queue 640 * and regular queue. 641 * In conskbd_override_kbtrans() routine, when receives 642 * KIOCSDIRECT ioctl, we need change the direction of 643 * keyboard input messages, and direct the input stream 644 * from keyboard into right queue. It causes this queue 645 * to be switched between regular queue and console 646 * queue. And here, in this routine, the in-parameter 647 * "q" can be any one of the two. Moreover, this module 648 * is executed in multithreaded environment, even if the 649 * q is switched to regular queue, it is possible that 650 * the in-parameter is still the console queue, and we 651 * need to return response to right queue. 652 * The response is sent to upstream by the kbtrans 653 * module. so we need to save the old queue, and wait 654 * kbtrans to proces message and to send response out, 655 * and then switch back to old queue. 656 */ 657 oldq = kbtrans_streams_get_queue( 658 conskbd.conskbd_kbtrans); 659 kbtrans_streams_set_queue( 660 conskbd.conskbd_kbtrans, RD(q)); 661 ret = kbtrans_streams_message( 662 conskbd.conskbd_kbtrans, mp); 663 kbtrans_streams_set_queue( 664 conskbd.conskbd_kbtrans, oldq); 665 666 switch (ret) { 667 case KBTRANS_MESSAGE_HANDLED: 668 continue; 669 case KBTRANS_MESSAGE_NOT_HANDLED: 670 break; 671 } 672 } 673 674 switch (mp->b_datap->db_type) { 675 676 case M_IOCTL: 677 conskbdioctl(q, mp); 678 break; 679 680 case M_FLUSH: 681 if (*mp->b_rptr & FLUSHW) { 682 flushq(q, FLUSHDATA); 683 } 684 /* 685 * here, if flush read queue, some key-up messages 686 * may be lost so that upper module or applications 687 * treat corresponding keys as being held down for 688 * ever. 689 */ 690 freemsg(mp); 691 break; 692 693 case M_DATA: 694 /* 695 * virtual keyboard doesn't support this interface. 696 * only when it is disabled, we pass the message 697 * down to lower queue. 698 */ 699 if ((conskbd.conskbd_bypassed) && 700 (conskbd.conskbd_lqueue_nums > 0)) { 701 if (putq(conskbd.conskbd_lqueue_list-> 702 lqs_queue, mp) != 1) 703 freemsg(mp); 704 } else { 705 freemsg(mp); 706 } 707 break; 708 709 default: 710 /* 711 * Pass an error message up. 712 */ 713 mp->b_datap->db_type = M_ERROR; 714 if (mp->b_cont) { 715 freemsg(mp->b_cont); 716 mp->b_cont = NULL; 717 } 718 mp->b_rptr = mp->b_datap->db_base; 719 mp->b_wptr = mp->b_rptr + sizeof (char); 720 *mp->b_rptr = EINVAL; 721 qreply(q, mp); 722 } 723 } /* end of while */ 724 725 } /* conskbduwsrv() */ 726 727 static void 728 conskbdioctl(queue_t *q, mblk_t *mp) 729 { 730 conskbd_lower_queue_t *prev; 731 conskbd_lower_queue_t *lqs; 732 struct iocblk *iocp; 733 struct linkblk *linkp; 734 int index; 735 int error = 0; 736 737 iocp = (struct iocblk *)mp->b_rptr; 738 739 switch (iocp->ioc_cmd) { 740 741 case I_LINK: 742 case I_PLINK: 743 if (conskbd.conskbd_bypassed == B_TRUE) { 744 /* 745 * A legacy keyboard can NOT be connected to conskbd together 746 * with other keyboards. So when a legacy keyboard is already 747 * linked under conkbd, we just reject all others. 748 */ 749 miocnak(q, mp, 0, EAGAIN); 750 break; 751 } 752 753 mutex_enter(&conskbd_lq_lock); 754 conskbd_ioc_plink(q, mp); 755 mutex_exit(&conskbd_lq_lock); 756 break; 757 758 case I_UNLINK: 759 case I_PUNLINK: 760 mutex_enter(&conskbd_lq_lock); 761 linkp = (struct linkblk *)mp->b_cont->b_rptr; 762 prev = conskbd.conskbd_lqueue_list; 763 for (lqs = prev; lqs; lqs = lqs->lqs_next) { 764 if (lqs->lqs_queue == linkp->l_qbot) { 765 if (prev == lqs) 766 conskbd.conskbd_lqueue_list = 767 lqs->lqs_next; 768 else 769 prev->lqs_next = lqs->lqs_next; 770 771 lqs->lqs_queue->q_ptr = NULL; 772 conskbd.conskbd_lqueue_nums --; 773 if (conskbd.conskbd_lqueue_nums == 0) 774 conskbd.conskbd_layout = -1; 775 776 mutex_exit(&conskbd_lq_lock); 777 778 for (index = 0; index < KBTRANS_KEYNUMS_MAX; 779 index ++) { 780 if (lqs->lqs_key_state[index] == 781 KEY_PRESSED) 782 kbtrans_streams_key( 783 conskbd.conskbd_kbtrans, 784 index, 785 KEY_RELEASED); 786 } 787 788 kmem_free(lqs, sizeof (*lqs)); 789 miocack(q, mp, 0, 0); 790 return; 791 } 792 prev = lqs; 793 } 794 mutex_exit(&conskbd_lq_lock); 795 miocnak(q, mp, 0, EINVAL); 796 break; 797 798 case KIOCSKABORTEN: 799 /* 800 * Check if privileged 801 */ 802 if ((error = secpolicy_sys_config(iocp->ioc_cr, B_FALSE))) { 803 miocnak(q, mp, 0, error); 804 return; 805 } 806 807 error = miocpullup(mp, sizeof (int)); 808 if (error != 0) { 809 miocnak(q, mp, 0, error); 810 return; 811 } 812 813 abort_enable = *(int *)mp->b_cont->b_rptr; 814 miocack(q, mp, 0, 0); 815 break; 816 817 default: 818 if (conskbd.conskbd_bypassed == B_TRUE) { 819 conskbd_legacy_kbd_ioctl(q, mp); 820 } else { 821 conskbd_virtual_kbd_ioctl(q, mp); 822 } 823 } 824 825 } /* conskbdioctl() */ 826 827 828 static void 829 conskbd_virtual_kbd_ioctl(queue_t *q, mblk_t *mp) 830 { 831 struct iocblk *iocp; 832 mblk_t *datap; 833 int cmd; 834 int error = 0; 835 836 iocp = (struct iocblk *)mp->b_rptr; 837 838 switch (iocp->ioc_cmd) { 839 case KIOCLAYOUT: 840 if ((datap = allocb(sizeof (int), BPRI_HI)) == NULL) { 841 miocnak(q, mp, 0, ENOMEM); 842 break; 843 } 844 845 if (conskbd.conskbd_layout == -1) 846 *(int *)datap->b_wptr = KBTRANS_USBKB_DEFAULT_LAYOUT; 847 else 848 *(int *)datap->b_wptr = conskbd.conskbd_layout; 849 850 datap->b_wptr += sizeof (int); 851 if (mp->b_cont) 852 freemsg(mp->b_cont); 853 mp->b_cont = datap; 854 miocack(q, mp, sizeof (int), 0); 855 break; 856 857 case KIOCSLAYOUT: 858 if (iocp->ioc_count != TRANSPARENT) { 859 miocnak(q, mp, 0, EINVAL); 860 break; 861 } 862 conskbd.conskbd_layout = *(intptr_t *)(mp->b_cont->b_rptr); 863 miocack(q, mp, 0, 0); 864 break; 865 866 case CONSOPENPOLLEDIO: 867 error = miocpullup(mp, sizeof (struct cons_polledio *)); 868 if (error != 0) { 869 miocnak(q, mp, 0, error); 870 break; 871 } 872 if (conskbd.conskbd_lqueue_list == NULL) { 873 miocnak(q, mp, 0, EINVAL); 874 break; 875 } 876 conskbd_handle_downstream_msg(q, mp); 877 break; 878 879 case CONSCLOSEPOLLEDIO: 880 if (conskbd.conskbd_lqueue_list == NULL) { 881 miocnak(q, mp, 0, EINVAL); 882 break; 883 } 884 conskbd_handle_downstream_msg(q, mp); 885 break; 886 887 case CONSSETABORTENABLE: 888 /* 889 * To enable combined STOP-A(or F1-A) to trap into kmdb, 890 * the lower physical keyboard drivers are always told not 891 * to parse abort sequence(refer to consconfig_dacf module). 892 * Instead, lower drivers always send all keydown & keyup 893 * messages up to conskbd, so that when key STOP(or F1) is 894 * pressed on one keyboard and key A is pressed on another 895 * keyboard, the system could trap into kmdb. 896 * 897 * When we by kbtrans_streams_message() invoked kbtrans to 898 * handle ioctls in conskbduwsrv() routine, kbtrans module 899 * already handle the message though it returned to us a 900 * KBTRANS_MESSAGE_NOT_HANDLED. For virtual keyboard, no 901 * special initialization or un-initialization is needed. 902 * So we just return ACK to upper module. 903 */ 904 miocack(q, mp, 0, 0); 905 break; 906 907 case KIOCCMD: 908 if (conskbd.conskbd_lqueue_list == NULL || 909 mp->b_cont == NULL) { 910 miocnak(q, mp, 0, EINVAL); 911 break; 912 } 913 cmd = *(int *)mp->b_cont->b_rptr; 914 if (cmd == KBD_CMD_GETLAYOUT) { 915 freemsg(mp->b_cont); 916 datap = allocb(sizeof (int), BPRI_HI); 917 if (datap == NULL) { 918 miocnak(q, mp, 0, ENOMEM); 919 return; 920 } 921 if (conskbd.conskbd_layout == -1) 922 *(int *)datap->b_wptr = 923 KBTRANS_USBKB_DEFAULT_LAYOUT; 924 else 925 *(int *)datap->b_wptr = conskbd.conskbd_layout; 926 927 mp->b_cont = datap; 928 miocack(q, mp, sizeof (int), 0); 929 return; 930 } 931 932 conskbd_handle_downstream_msg(q, mp); 933 break; 934 935 default: 936 miocnak(q, mp, 0, EINVAL); 937 break; 938 } 939 940 } /* conskbd_virtual_kbd_ioctl() */ 941 942 static void 943 conskbd_legacy_kbd_ioctl(queue_t *q, mblk_t *mp) 944 { 945 conskbd_lower_queue_t *lq; 946 struct iocblk *iocp; 947 int error = 0; 948 949 iocp = (struct iocblk *)mp->b_rptr; 950 951 ASSERT(conskbd.conskbd_lqueue_nums == 1); 952 switch (iocp->ioc_cmd) { 953 954 case KIOCGDIRECT: { 955 mblk_t *datap; 956 957 if ((datap = allocb(sizeof (int), BPRI_MED)) == NULL) { 958 miocnak(q, mp, 0, ENOMEM); 959 break; 960 } 961 962 *(int *)datap->b_wptr = conskbd.conskbd_directio; 963 datap->b_wptr += sizeof (int); 964 if (mp->b_cont != NULL) { 965 freemsg(mp->b_cont); 966 mp->b_cont = NULL; 967 } 968 mp->b_cont = datap; 969 miocack(q, mp, sizeof (int), 0); 970 break; 971 } 972 973 case KIOCSDIRECT: 974 error = miocpullup(mp, sizeof (int)); 975 if (error != 0) { 976 miocnak(q, mp, 0, error); 977 break; 978 } 979 conskbd.conskbd_directio = *(int *)mp->b_cont->b_rptr; 980 981 /* 982 * Pass this through, if there's something to pass 983 * it through to, so the system keyboard can reset 984 * itself. 985 */ 986 if (conskbd.conskbd_lqueue_nums > 0) { 987 lq = conskbd.conskbd_lqueue_list; 988 ASSERT(lq && lq->lqs_next == NULL); 989 if (putq(lq->lqs_queue, mp) != 1) { 990 miocnak(q, mp, 0, ENOMEM); 991 return; 992 } 993 break; 994 } 995 996 miocack(q, mp, 0, 0); 997 break; 998 999 default: 1000 /* 1001 * Pass this through, if there's something to pass it 1002 * through to; otherwise, reject it. 1003 */ 1004 if (conskbd.conskbd_lqueue_nums > 0) { 1005 lq = conskbd.conskbd_lqueue_list; 1006 ASSERT(lq && lq->lqs_next == NULL); 1007 if (putq(lq->lqs_queue, mp) != 1) { 1008 miocnak(q, mp, 0, ENOMEM); 1009 return; 1010 } 1011 break; 1012 } 1013 1014 /* nobody below us; reject it */ 1015 miocnak(q, mp, 0, EINVAL); 1016 break; 1017 } 1018 1019 } /* conskbd_legacy_kbd_ioctl() */ 1020 1021 1022 /* 1023 * Service procedure for lower write queue. 1024 * Puts things on the queue below us, if it lets us. 1025 */ 1026 static void 1027 conskbdlwserv(queue_t *q) 1028 { 1029 register mblk_t *mp; 1030 1031 while (canput(q->q_next) && (mp = getq(q)) != NULL) 1032 putnext(q, mp); 1033 1034 } /* conskbdlwserv() */ 1035 1036 /* 1037 * Put procedure for lower read queue. 1038 * Pass everything up to minor device 0 if "directio" set, otherwise to minor 1039 * device 1. 1040 */ 1041 static void 1042 conskbdlrput(queue_t *q, mblk_t *mp) 1043 { 1044 conskbd_lower_queue_t *lqs; 1045 struct iocblk *iocp; 1046 Firm_event *fe; 1047 1048 DPRINTF(PRINT_L1, PRINT_MASK_ALL, ("conskbdlrput\n")); 1049 1050 switch (mp->b_datap->db_type) { 1051 1052 case M_FLUSH: 1053 if (*mp->b_rptr == FLUSHR) { 1054 flushq(q, FLUSHDATA); /* XXX doesn't flush M_DELAY */ 1055 *mp->b_rptr &= ~FLUSHR; /* it has been flushed */ 1056 } 1057 if (*mp->b_rptr == FLUSHW) { 1058 flushq(WR(q), FLUSHDATA); 1059 qreply(q, mp); /* give the read queues a crack at it */ 1060 } else 1061 freemsg(mp); 1062 break; 1063 1064 case M_DATA: 1065 if (conskbd.conskbd_bypassed == B_FALSE) { 1066 1067 fe = (Firm_event *)mp->b_rptr; 1068 1069 /* 1070 * This is a workaround. 1071 * 1072 * According to HID specification, there are the 1073 * following keycode mapping between PS2 and USB, 1074 * 1075 * PS2 AT-101 keycode(29) ---> USB(49) 1076 * PS2 AT-102 keycode(42) ---> USB(50) 1077 * 1078 * However, the two keys, AT-101(29) and AT-102(42), 1079 * have the same scancode,0x2B, in PS2 scancode SET1 1080 * which we are using. The Kb8042 driver always 1081 * recognizes the two keys as PS2(29) so that we could 1082 * not know which is being pressed or released when we 1083 * receive scancode 0x2B. Fortunately, the two keys can 1084 * not co-exist in a specific layout. In other words, 1085 * in the table of keycode-to-symbol mapping, either 1086 * entry 49 or 50 is a hole. So, if we're processing a 1087 * keycode 49, we look at the entry for 49. If it's 1088 * HOLE, remap the key to 50; If we're processing a 50, 1089 * look at the entry for 50. If it's HOLE, we remap 1090 * the key to 49. 1091 */ 1092 if (fe->id == 49 || fe->id == 50) { 1093 if (conskbd_keyindex->k_normal[50] == HOLE) 1094 fe->id = 49; 1095 else 1096 fe->id = 50; 1097 } 1098 1099 /* 1100 * Remember key state of each key of lower physical 1101 * keyboard. When a keyboard is umplumbed from conskbd, 1102 * we will check all key states. By then, we will fake 1103 * a KEY_RELEASED message for each key in KEY_PRESSED 1104 * state. Otherwise, upper module will treat these keys 1105 * as held-down for ever. 1106 */ 1107 iocp = (struct iocblk *)mp->b_rptr; 1108 lqs = (conskbd_lower_queue_t *)q->q_ptr; 1109 if (fe->value) 1110 lqs->lqs_key_state[fe->id] = KEY_PRESSED; 1111 else 1112 lqs->lqs_key_state[fe->id] = KEY_RELEASED; 1113 1114 kbtrans_streams_key(conskbd.conskbd_kbtrans, 1115 fe->id, fe->value ? KEY_PRESSED : KEY_RELEASED); 1116 freemsg(mp); 1117 } else { 1118 if (conskbd.conskbd_directio) 1119 putnext(conskbd_regqueue, mp); 1120 else if (conskbd_consqueue != NULL) 1121 putnext(conskbd_consqueue, mp); 1122 else 1123 freemsg(mp); 1124 } 1125 conskbd_idle_stamp = gethrestime_sec(); 1126 break; 1127 1128 case M_IOCACK: 1129 case M_IOCNAK: 1130 iocp = (struct iocblk *)mp->b_rptr; 1131 lqs = (conskbd_lower_queue_t *)q->q_ptr; 1132 1133 DPRINTF(PRINT_L1, PRINT_MASK_ALL, ("conskbdlrput: " 1134 "ACK/NAK - cmd 0x%x\n", iocp->ioc_cmd)); 1135 1136 conskbd_lqs_ack_complete(lqs, mp); 1137 break; 1138 1139 case M_ERROR: 1140 case M_HANGUP: 1141 default: 1142 freemsg(mp); /* anything useful here? */ 1143 break; 1144 } 1145 1146 } /* conskbdlrput() */ 1147 1148 1149 /* ARGSUSED */ 1150 static int 1151 conskbd_kstat_update(kstat_t *ksp, int rw) 1152 { 1153 if (rw == KSTAT_WRITE) 1154 return (EACCES); 1155 1156 conskbd_kstat.idle_sec.value.l = gethrestime_sec() - conskbd_idle_stamp; 1157 1158 return (0); 1159 1160 } /* conskbd_kstat_update() */ 1161 1162 /* 1163 * STREAMS architecuture provides guarantee that the ID of each 1164 * message, iocblk.ioc_id, in a stream is unique. The following 1165 * routine performes the task: When receive request from upstream, 1166 * it saves the request in a global link list, clones the request, 1167 * and then sends a copy of the request to each of lower queues 1168 * which are plumbed into conskbd. And then, when receives responses 1169 * from lower queues in conskbdlrput() routine, we can know the 1170 * request matching received responses by searching the global linked 1171 * list to find the request which has the same message ID of the 1172 * response. Then, when all lower queues response this request, we 1173 * give a response to upstreams based the following policy: 1174 * If any one of lower queues acks our reuqest, then we return ack 1175 * to upstreams; only if all lower queues nak our request, we return 1176 * nak to upstreams. If all responses are nak, the error number of 1177 * the first response is sent to upstream. 1178 */ 1179 static void 1180 conskbd_handle_downstream_msg(queue_t *q, mblk_t *mp) 1181 { 1182 conskbd_pending_msg_t *msg; 1183 conskbd_lower_queue_t *lqs; 1184 struct iocblk *iocp; 1185 mblk_t *clonemp; 1186 int retry; 1187 1188 if (conskbd.conskbd_lqueue_nums == 0) { 1189 miocnak(q, mp, 0, EINVAL); 1190 return; 1191 } 1192 1193 msg = (conskbd_pending_msg_t *) 1194 kmem_zalloc(sizeof (conskbd_pending_msg_t), KM_SLEEP); 1195 mutex_init(&msg->kpm_lock, NULL, MUTEX_DRIVER, NULL); 1196 lqs = conskbd.conskbd_lqueue_list; 1197 iocp = (struct iocblk *)mp->b_rptr; 1198 1199 ASSERT(iocp->ioc_cmd == CONSOPENPOLLEDIO || 1200 iocp->ioc_cmd == CONSCLOSEPOLLEDIO || 1201 iocp->ioc_cmd == KIOCCMD); 1202 1203 msg->kpm_upper_queue = q; 1204 msg->kpm_req_msg = mp; 1205 msg->kpm_req_id = iocp->ioc_id; 1206 msg->kpm_req_cmd = iocp->ioc_cmd; 1207 msg->kpm_req_nums = conskbd.conskbd_lqueue_nums; 1208 conskbd_mux_enqueue_msg(msg); 1209 1210 for (retry = 0, lqs = conskbd.conskbd_lqueue_list; lqs; ) { 1211 1212 /* 1213 * if a lower physical keyboard is not in polled I/O 1214 * mode, we couldn't send CONSCLOSEPOLLEDIO to it, 1215 * otherwise, system will panic. 1216 */ 1217 if (iocp->ioc_cmd == CONSCLOSEPOLLEDIO && 1218 lqs->lqs_polledio == NULL) { 1219 lqs = lqs->lqs_next; 1220 msg->kpm_req_nums --; 1221 retry = 0; 1222 continue; 1223 } 1224 1225 clonemp = copymsg(mp); 1226 if (clonemp != NULL) { 1227 if (putq(lqs->lqs_queue, clonemp) == 1) { 1228 lqs = lqs->lqs_next; 1229 retry = 0; 1230 continue; 1231 } 1232 1233 /* 1234 * failed to invoke putq(), retry. 1235 */ 1236 freemsg(clonemp); 1237 } 1238 1239 /* 1240 * During testing it was observed that occasionally 1241 * copymsg() would fail during boot. The reason for 1242 * these failures is unknown. Since we really want 1243 * to successfully plumb up all the attached keyboards 1244 * during boot we do a best effort here by retrying 1245 * the copymsg() call in the hopes that it will 1246 * succeeded upon subsequent invocations. 1247 * 1248 * If all the calls to copymsg() fails, it will cause 1249 * the corresponding keyboard to be unavailable, or 1250 * or behave weirdly, 1251 * 1252 * 1) for CONSOPENPOLLEDIO 1253 * if copymsg()fails, the corresponding keyboard 1254 * is not available in polled I/O mode once 1255 * entering kmdb; 1256 * 2) for CONSCLOSEPOLLEDIO 1257 * if copymsg() fails, the corresponding keyboard 1258 * is not available in normal mode once returning 1259 * from kmdb; 1260 * 3) for KIOCCMD 1261 * 3.1) for KBD_CMD_NOBELL 1262 * there's no beep in USB and PS2 keyboard, 1263 * this ioctl actually disables the beep on 1264 * system mainboard. Note that all the cloned 1265 * messages sent down to lower queues do the 1266 * same job for system mainboard. Therefore, 1267 * even if we fail to send this ioctl to most 1268 * of lower queues, the beep still would be 1269 * disabled. So, no trouble exists here. 1270 * 3.2) for others 1271 * nothing; 1272 * 1273 * However, all cases could be resume next time when the 1274 * same request comes again. 1275 */ 1276 if (retry ++ >= 5) { 1277 dev_t devt; 1278 char path[MAXPATHLEN + 1]; 1279 1280 devt = lqs->lqs_queue->q_stream->sd_vnode->v_rdev; 1281 switch (iocp->ioc_cmd) { 1282 case CONSOPENPOLLEDIO: 1283 if (ddi_dev_pathname(devt, S_IFCHR, 1284 path) == DDI_SUCCESS) 1285 cmn_err(CE_WARN, "conskbd: " 1286 "keyboard is not available" 1287 " for system debugging: %s", 1288 path); 1289 break; 1290 1291 case CONSCLOSEPOLLEDIO: 1292 if (ddi_dev_pathname(devt, S_IFCHR, 1293 path) == DDI_SUCCESS) 1294 cmn_err(CE_WARN, "conskbd: " 1295 "keyboard is not available:" 1296 " %s", path); 1297 break; 1298 1299 default: 1300 break; 1301 } 1302 msg->kpm_req_nums --; 1303 lqs = lqs->lqs_next; 1304 retry = 0; 1305 } 1306 } 1307 1308 if (msg->kpm_req_nums == 0) { 1309 conskbd_mux_dequeue_msg(msg); 1310 kmem_free(msg, sizeof (*msg)); 1311 miocnak(q, mp, 0, ENOMEM); 1312 } 1313 1314 } /* conskbd_handle_downstream_msg() */ 1315 1316 1317 static void 1318 conskbd_ioc_plink(queue_t *q, mblk_t *mp) 1319 { 1320 mblk_t *req; 1321 queue_t *lowque; 1322 struct iocblk *iocp; 1323 struct linkblk *linkp; 1324 conskbd_lower_queue_t *lqs; 1325 1326 ASSERT(mutex_owned(&conskbd_lq_lock)); 1327 1328 lqs = kmem_zalloc(sizeof (*lqs), KM_SLEEP); 1329 ASSERT(lqs->lqs_state == LQS_UNINITIALIZED); 1330 1331 iocp = (struct iocblk *)mp->b_rptr; 1332 linkp = (struct linkblk *)mp->b_cont->b_rptr; 1333 lowque = linkp->l_qbot; 1334 1335 lowque->q_ptr = (void *)lqs; 1336 OTHERQ(lowque)->q_ptr = (void *)lqs; 1337 1338 lqs->lqs_queue = lowque; 1339 lqs->lqs_pending_plink = mp; 1340 lqs->lqs_pending_queue = q; 1341 1342 req = mkiocb(CONSSETKBDTYPE); 1343 if (req == NULL) { 1344 miocnak(q, mp, 0, ENOMEM); 1345 lowque->q_ptr = NULL; 1346 kmem_free(lqs, sizeof (*lqs)); 1347 return; 1348 } 1349 1350 req->b_cont = allocb(sizeof (int), BPRI_MED); 1351 if (req->b_cont == NULL) { 1352 freemsg(req); 1353 miocnak(q, mp, 0, ENOMEM); 1354 lowque->q_ptr = NULL; 1355 kmem_free(lqs, sizeof (*lqs)); 1356 return; 1357 } 1358 1359 iocp->ioc_count = 0; 1360 iocp->ioc_rval = 0; 1361 1362 *(int *)req->b_cont->b_wptr = KB_USB; 1363 req->b_cont->b_wptr += sizeof (int); 1364 1365 lqs->lqs_state = LQS_KIOCTYPE_ACK_PENDING; 1366 1367 if (putq(lowque, req) != 1) { 1368 freemsg(req); 1369 miocnak(lqs->lqs_pending_queue, 1370 lqs->lqs_pending_plink, 0, ENOMEM); 1371 lowque->q_ptr = NULL; 1372 kmem_free(lqs, sizeof (*lqs)); 1373 } 1374 1375 } /* conskbd_ioc_plink() */ 1376 1377 1378 /* 1379 * Every physical keyboard has a corresponding STREAMS queue. We call this 1380 * queue lower queue. Every lower queue has a state, refer to conskbd.h file 1381 * about "enum conskbd_lqs_state". 1382 * The following routine is used to handle response messages from lower queue. 1383 * When receiving ack/nak message from lower queue(s), the routine determines 1384 * the passage for it according to the current state of this lower queue. 1385 */ 1386 static void 1387 conskbd_lqs_ack_complete(conskbd_lower_queue_t *lqs, mblk_t *mp) 1388 { 1389 switch (lqs->lqs_state) { 1390 1391 /* S6: working in virtual keyboard mode, multi-keyboards are usable */ 1392 case LQS_INITIALIZED: 1393 conskbd_mux_upstream_msg(lqs, mp); 1394 break; 1395 1396 /* S5: working in legacy mode, only one keyboard is usable */ 1397 case LQS_INITIALIZED_LEGACY: 1398 conskbd_legacy_upstream_msg(lqs, mp); 1399 break; 1400 1401 /* S4: wait lower queue to acknowledge KIOCSLED message */ 1402 case LQS_KIOCSLED_ACK_PENDING: 1403 conskbd_kiocsled_complete(lqs, mp); 1404 break; 1405 1406 /* S3: wait lower queue to acknowledge KIOCLAYOUT message */ 1407 case LQS_KIOCLAYOUT_ACK_PENDING: 1408 conskbd_kioclayout_complete(lqs, mp); 1409 break; 1410 1411 /* S2: wait lower queue to acknowledge KIOCTRANS message */ 1412 case LQS_KIOCTRANS_ACK_PENDING: 1413 conskbd_kioctrans_complete(lqs, mp); 1414 break; 1415 1416 /* S1: wait lower queue to acknowledge KIOCTYPE message */ 1417 case LQS_KIOCTYPE_ACK_PENDING: 1418 conskbd_kioctype_complete(lqs, mp); 1419 break; 1420 1421 /* if reaching here, there must be a error */ 1422 default: 1423 freemsg(mp); 1424 cmn_err(CE_WARN, "conskbd: lqs_ack_complete() state error"); 1425 break; 1426 } 1427 1428 } /* conskbd_lqs_ack_complete() */ 1429 1430 1431 static void 1432 conskbd_kioctype_complete(conskbd_lower_queue_t *lqs, mblk_t *mp) 1433 { 1434 struct iocblk *iocp; 1435 mblk_t *msg; 1436 mblk_t *req; 1437 queue_t *lowerque; 1438 1439 ASSERT(lqs->lqs_pending_plink); 1440 ASSERT(lqs->lqs_state == LQS_KIOCTYPE_ACK_PENDING); 1441 1442 lowerque = lqs->lqs_queue; 1443 1444 switch (mp->b_datap->db_type) { 1445 case M_IOCACK: 1446 req = mkiocb(KIOCTRANS); 1447 if (req == NULL) { 1448 miocnak(lqs->lqs_pending_queue, lqs->lqs_pending_plink, 1449 0, ENOMEM); 1450 lowerque->q_ptr = NULL; 1451 kmem_free(lqs, sizeof (*lqs)); 1452 freemsg(mp); 1453 return; 1454 } 1455 1456 req->b_cont = allocb(sizeof (int), BPRI_MED); 1457 if (req->b_cont == NULL) { 1458 miocnak(lqs->lqs_pending_queue, lqs->lqs_pending_plink, 1459 0, ENOMEM); 1460 lowerque->q_ptr = NULL; 1461 kmem_free(lqs, sizeof (*lqs)); 1462 freemsg(req); 1463 freemsg(mp); 1464 return; 1465 } 1466 1467 /* Set the translate mode to TR_UNTRANS_EVENT */ 1468 *(int *)req->b_cont->b_wptr = TR_UNTRANS_EVENT; 1469 req->b_cont->b_wptr += sizeof (int); 1470 1471 /* Ready to handle the response to KIOCTRANS */ 1472 lqs->lqs_state = LQS_KIOCTRANS_ACK_PENDING; 1473 1474 if (putq(lowerque, req) != 1) { 1475 freemsg(req); 1476 miocnak(lqs->lqs_pending_queue, 1477 lqs->lqs_pending_plink, 0, ENOMEM); 1478 lowerque->q_ptr = NULL; 1479 kmem_free(lqs, sizeof (*lqs)); 1480 } 1481 break; 1482 1483 case M_IOCNAK: 1484 /* 1485 * The lower keyboard driver can't mimic USB keyboard, 1486 * that's say, the physical keyboard is an old one, such 1487 * as TYPE 3/4/5 one. In this case, the virtual keyboard 1488 * is disabled, and the data from lower keyboard driver 1489 * will bypass the conskbd module. 1490 */ 1491 1492 /* 1493 * if there is any other keyborad already linked under the 1494 * conskbd, we reject the current one. 1495 */ 1496 if (conskbd.conskbd_lqueue_nums > 0) { 1497 iocp = (struct iocblk *)mp->b_rptr; 1498 miocnak(lqs->lqs_pending_queue, lqs->lqs_pending_plink, 1499 0, iocp->ioc_error); 1500 lowerque->q_ptr = NULL; 1501 kmem_free(lqs, sizeof (*lqs)); 1502 break; 1503 } 1504 1505 /* 1506 * Bypass the virutal keyboard for old hardware 1507 */ 1508 conskbd.conskbd_bypassed = B_TRUE; 1509 1510 msg = lqs->lqs_pending_plink; 1511 msg->b_datap->db_type = M_IOCACK; 1512 iocp = (struct iocblk *)msg->b_rptr; 1513 iocp->ioc_error = 0; 1514 1515 /* 1516 * link this keyboard under conskbd 1517 */ 1518 mutex_enter(&conskbd_lq_lock); 1519 lqs->lqs_next = conskbd.conskbd_lqueue_list; 1520 conskbd.conskbd_lqueue_list = lqs; 1521 conskbd.conskbd_lqueue_nums++; 1522 mutex_exit(&conskbd_lq_lock); 1523 1524 lqs->lqs_state = LQS_INITIALIZED_LEGACY; 1525 1526 qreply(lqs->lqs_pending_queue, lqs->lqs_pending_plink); 1527 break; 1528 } 1529 1530 freemsg(mp); 1531 1532 } /* conskbd_kioctype_complete() */ 1533 1534 static void 1535 conskbd_kioctrans_complete(conskbd_lower_queue_t *lqs, mblk_t *mp) 1536 { 1537 struct iocblk *iocp; 1538 mblk_t *req; 1539 queue_t *lowerque; 1540 1541 ASSERT(lqs->lqs_pending_plink != NULL); 1542 ASSERT(lqs->lqs_state == LQS_KIOCTRANS_ACK_PENDING); 1543 1544 lowerque = lqs->lqs_queue; 1545 1546 switch (mp->b_datap->db_type) { 1547 case M_IOCACK: 1548 req = mkiocb(KIOCLAYOUT); 1549 if (req == NULL) { 1550 miocnak(lqs->lqs_pending_queue, lqs->lqs_pending_plink, 1551 0, ENOMEM); 1552 lowerque->q_ptr = NULL; 1553 kmem_free(lqs, sizeof (*lqs)); 1554 freemsg(mp); 1555 return; 1556 } 1557 1558 req->b_cont = allocb(sizeof (int), BPRI_MED); 1559 if (req->b_cont == NULL) { 1560 miocnak(lqs->lqs_pending_queue, lqs->lqs_pending_plink, 1561 0, ENOMEM); 1562 kmem_free(lqs, sizeof (*lqs)); 1563 freemsg(req); 1564 freemsg(mp); 1565 return; 1566 } 1567 1568 /* waiting for response to KIOCLAYOUT */ 1569 lqs->lqs_state = LQS_KIOCLAYOUT_ACK_PENDING; 1570 if (putq(lqs->lqs_queue, req) != 1) { 1571 freemsg(req); 1572 miocnak(lqs->lqs_pending_queue, 1573 lqs->lqs_pending_plink, 0, ENOMEM); 1574 lowerque->q_ptr = NULL; 1575 kmem_free(lqs, sizeof (*lqs)); 1576 } 1577 break; 1578 1579 case M_IOCNAK: 1580 iocp = (struct iocblk *)mp->b_rptr; 1581 miocnak(lqs->lqs_pending_queue, lqs->lqs_pending_plink, 1582 0, iocp->ioc_error); 1583 lowerque->q_ptr = NULL; 1584 kmem_free(lqs, sizeof (*lqs)); 1585 break; 1586 } 1587 1588 freemsg(mp); 1589 1590 } /* conskbd_kioctrans_complete() */ 1591 1592 static void 1593 conskbd_kioclayout_complete(conskbd_lower_queue_t *lqs, mblk_t *mp) 1594 { 1595 mblk_t *req; 1596 int layout; 1597 boolean_t fail; 1598 1599 ASSERT(lqs->lqs_pending_plink != NULL); 1600 ASSERT(lqs->lqs_state == LQS_KIOCLAYOUT_ACK_PENDING); 1601 1602 switch (mp->b_datap->db_type) { 1603 case M_IOCACK: 1604 if (miocpullup(mp, sizeof (int)) == 0) { 1605 layout = *(int *)mp->b_cont->b_rptr; 1606 /* 1607 * We just accept the layout of the first keyboard 1608 * requesting to be linked under conskbd. If current 1609 * keyboard is the first one, and if we get right 1610 * layout from it, we set conskbd's layout 1611 */ 1612 if (layout != -1 && conskbd.conskbd_layout == -1) 1613 conskbd.conskbd_layout = layout; 1614 } 1615 break; 1616 1617 1618 /* if fail, leave conskbd's layout as it is */ 1619 case M_IOCNAK: 1620 break; 1621 } 1622 1623 freemsg(mp); 1624 1625 fail = B_TRUE; 1626 req = mkiocb(KIOCSLED); 1627 if (req) { 1628 req->b_cont = allocb(sizeof (uchar_t), BPRI_MED); 1629 if (req->b_cont) { 1630 *(uchar_t *)req->b_cont->b_wptr = 1631 conskbd.conskbd_led_state; 1632 req->b_cont->b_wptr += sizeof (uchar_t); 1633 1634 /* waiting for response to KIOCSLED */ 1635 lqs->lqs_state = LQS_KIOCSLED_ACK_PENDING; 1636 if (putq(lqs->lqs_queue, req) == 1) { 1637 fail = B_FALSE; 1638 } else { 1639 freemsg(req); 1640 } 1641 1642 } else { 1643 freemsg(req); 1644 } 1645 } 1646 1647 if (fail) { 1648 /* 1649 * If fail to allocate KIOCSLED message or put the message 1650 * into lower queue, we immediately link current keyboard 1651 * under conskbd. Thus, even if fails to set LED, this 1652 * keyboard could be available. 1653 */ 1654 conskbd_link_lower_queue(lqs); 1655 } 1656 1657 } /* conskbd_kioclayout_complete() */ 1658 1659 1660 static void 1661 conskbd_kiocsled_complete(conskbd_lower_queue_t *lqs, mblk_t *mp) 1662 { 1663 ASSERT(lqs->lqs_pending_plink != NULL); 1664 ASSERT(lqs->lqs_state == LQS_KIOCSLED_ACK_PENDING); 1665 1666 /* 1667 * Basically, failure of setting LED is not a fatal error, 1668 * so we will plumb the lower queue into conskbd whether 1669 * setting LED succeeds or fails. 1670 */ 1671 freemsg(mp); 1672 conskbd_link_lower_queue(lqs); 1673 1674 } /* conskbd_kiocsled_complete() */ 1675 1676 1677 static void 1678 conskbd_mux_upstream_msg(conskbd_lower_queue_t *lqs, mblk_t *mp) 1679 { 1680 conskbd_pending_msg_t *msg; 1681 struct iocblk *iocp; 1682 int error; 1683 dev_t devt; 1684 char path[MAXPATHLEN + 1]; 1685 1686 ASSERT(lqs->lqs_state == LQS_INITIALIZED); 1687 msg = conskbd_mux_find_msg(mp); 1688 1689 if (!msg) { 1690 /* 1691 * Here, we just discard the responses to KIOCSLED request. 1692 * Please refer to conskbd_streams_setled(). 1693 */ 1694 ASSERT(((struct iocblk *)mp->b_rptr)->ioc_cmd == KIOCSLED); 1695 freemsg(mp); 1696 return; 1697 } 1698 1699 /* 1700 * We use the b_next field of mblk_t structure to link all 1701 * response coming from lower queues into a linkage list, 1702 * and make use of the b_prev field to save a pointer to 1703 * the lower queue from which the current response message 1704 * comes. 1705 */ 1706 ASSERT(mp->b_next == NULL && mp->b_prev == NULL); 1707 mutex_enter(&msg->kpm_lock); 1708 mp->b_next = msg->kpm_resp_list; 1709 mp->b_prev = (mblk_t *)lqs; 1710 msg->kpm_resp_list = mp; 1711 msg->kpm_resp_nums ++; 1712 mutex_exit(&msg->kpm_lock); 1713 1714 if (msg->kpm_resp_nums < msg->kpm_req_nums) 1715 return; 1716 1717 ASSERT(msg->kpm_resp_nums == msg->kpm_req_nums); 1718 ASSERT(mp == msg->kpm_resp_list); 1719 1720 conskbd_mux_dequeue_msg(msg); 1721 1722 1723 /* 1724 * Here, we have the policy that, if any one lower queue ACK 1725 * our reuqest, then we return ACK to upstreams; only if all 1726 * lower queues NAK our request, we return NAK to upstreams. 1727 * if all responses are nak, the errno of the first response 1728 * is sent to upstreams 1729 */ 1730 ASSERT(mp->b_rptr); 1731 error = ((struct iocblk *)mp->b_rptr)->ioc_error; 1732 1733 switch (msg->kpm_req_cmd) { 1734 case CONSOPENPOLLEDIO: 1735 /* 1736 * Here, we can safely ignore the NAK message. If any one lower 1737 * queue returns NAK, the pointer to the corresponding polledio 1738 * structure will remain null, that's say lqs->lqs_polledio = 1739 * null. When we need to invoke polled I/O interface, we will 1740 * check if the pointer is null. 1741 */ 1742 for (mp = msg->kpm_resp_list; mp; ) { 1743 cons_polledio_t *polledio; 1744 1745 msg->kpm_resp_list = mp->b_next; 1746 lqs = (conskbd_lower_queue_t *)mp->b_prev; 1747 devt = lqs->lqs_queue->q_stream->sd_vnode->v_rdev; 1748 if (mp->b_datap->db_type == M_IOCACK) { 1749 polledio = *(struct cons_polledio **) 1750 mp->b_cont->b_rptr; 1751 if (polledio->cons_polledio_version == 1752 CONSPOLLEDIO_V1) { 1753 lqs->lqs_polledio = polledio; 1754 error = 0; 1755 } else { 1756 /* 1757 * USB and PS2 keyboard drivers should 1758 * use the same cons_polledio structure 1759 * as conskbd. 1760 */ 1761 if (ddi_dev_pathname(devt, S_IFCHR, 1762 path) == DDI_SUCCESS) { 1763 cmn_err(CE_WARN, "keyboard " 1764 "driver does not support " 1765 "system debugging: %s", 1766 path); 1767 } 1768 error = EINVAL; 1769 } 1770 } else { 1771 if (ddi_dev_pathname(devt, S_IFCHR, path) == 1772 DDI_SUCCESS) { 1773 cmn_err(CE_WARN, "conskbd: keyboard is" 1774 " not available for system" 1775 " debugging: %s", path); 1776 } 1777 } 1778 mp->b_next = NULL; 1779 mp->b_prev = NULL; 1780 freemsg(mp); 1781 mp = msg->kpm_resp_list; 1782 } 1783 1784 mp = msg->kpm_req_msg; 1785 if (error == 0) { 1786 *(struct cons_polledio **)mp->b_cont->b_rptr = 1787 &conskbd.conskbd_polledio; 1788 } 1789 break; 1790 1791 case CONSCLOSEPOLLEDIO: 1792 for (mp = msg->kpm_resp_list; mp; ) { 1793 msg->kpm_resp_list = mp->b_next; 1794 lqs = (conskbd_lower_queue_t *)mp->b_prev; 1795 if (mp->b_datap->db_type == M_IOCACK) { 1796 lqs->lqs_polledio = NULL; 1797 error = 0; 1798 } else { 1799 devt = 1800 lqs->lqs_queue->q_stream->sd_vnode->v_rdev; 1801 1802 if (ddi_dev_pathname(devt, S_IFCHR, path) == 1803 DDI_SUCCESS) { 1804 cmn_err(CE_WARN, "conskbd: keyboard is" 1805 " not available: %s", path); 1806 } 1807 } 1808 1809 mp->b_next = NULL; 1810 mp->b_prev = NULL; 1811 freemsg(mp); 1812 mp = msg->kpm_resp_list; 1813 } 1814 break; 1815 1816 case KIOCCMD: 1817 for (mp = msg->kpm_resp_list; mp; ) { 1818 msg->kpm_resp_list = mp->b_next; 1819 1820 if (mp->b_datap->db_type == M_IOCACK) 1821 error = 0; 1822 mp->b_next = NULL; 1823 mp->b_prev = NULL; 1824 freemsg(mp); 1825 mp = msg->kpm_resp_list; 1826 } 1827 break; 1828 1829 default: /* it is impossible to reach here */ 1830 cmn_err(CE_WARN, "conskbd: unexpected ioctl reply"); 1831 } 1832 1833 mp = msg->kpm_req_msg; 1834 if (error == 0) { 1835 mp->b_datap->db_type = M_IOCACK; 1836 } else { 1837 mp->b_datap->db_type = M_IOCNAK; 1838 } 1839 iocp = (struct iocblk *)mp->b_rptr; 1840 iocp->ioc_error = error; 1841 qreply(msg->kpm_upper_queue, mp); 1842 mutex_destroy(&msg->kpm_lock); 1843 kmem_free(msg, sizeof (*msg)); 1844 1845 } /* conskbd_mux_upstream_msg() */ 1846 1847 1848 static void 1849 conskbd_link_lower_queue(conskbd_lower_queue_t *lqs) 1850 { 1851 struct iocblk *iocp; 1852 mblk_t *msg; 1853 int index; 1854 1855 ASSERT(lqs->lqs_pending_plink != NULL); 1856 1857 msg = lqs->lqs_pending_plink; 1858 msg->b_datap->db_type = M_IOCACK; 1859 iocp = (struct iocblk *)msg->b_rptr; 1860 iocp->ioc_error = 0; 1861 1862 /* 1863 * Now, link the lower queue under conskbd 1864 */ 1865 mutex_enter(&conskbd_lq_lock); 1866 conskbd.conskbd_lqueue_nums++; 1867 lqs->lqs_next = conskbd.conskbd_lqueue_list; 1868 conskbd.conskbd_lqueue_list = lqs; 1869 for (index = 0; index < KBTRANS_KEYNUMS_MAX; index ++) { 1870 lqs->lqs_key_state[index] = KEY_RELEASED; 1871 } 1872 lqs->lqs_state = LQS_INITIALIZED; 1873 mutex_exit(&conskbd_lq_lock); 1874 qreply(lqs->lqs_pending_queue, lqs->lqs_pending_plink); 1875 1876 } /* conskbd_kiocsled_complete() */ 1877 1878 1879 1880 /*ARGSUSED*/ 1881 static void 1882 conskbd_legacy_upstream_msg(conskbd_lower_queue_t *lqs, mblk_t *mp) 1883 { 1884 struct iocblk *iocp; 1885 1886 ASSERT(lqs && lqs->lqs_state == LQS_INITIALIZED_LEGACY); 1887 1888 /* 1889 * We assume that all of the ioctls are headed to the 1890 * conskbd_regqueue if it is open. We are intercepting a few ioctls 1891 * that we know belong to conskbd_consqueue, and sending them there. 1892 * Any other, new ioctls that have to be routed to conskbd_consqueue 1893 * should be added to this list. 1894 */ 1895 iocp = (struct iocblk *)mp->b_rptr; 1896 1897 if ((iocp->ioc_cmd == CONSOPENPOLLEDIO) || 1898 (iocp->ioc_cmd == CONSCLOSEPOLLEDIO)) { 1899 1900 DPRINTF(PRINT_L1, PRINT_MASK_ALL, 1901 ("conskbd_legacy_upstream_msg: " 1902 "CONSOPEN/CLOSEPOLLEDIO ACK/NAK\n")); 1903 putnext(conskbd_consqueue, mp); 1904 1905 } else if (conskbd_regqueue != NULL) { 1906 DPRINTF(PRINT_L1, PRINT_MASK_ALL, 1907 ("conskbd_legacy_upstream_msg: conskbd_regqueue != NULL")); 1908 1909 putnext(conskbd_regqueue, mp); 1910 1911 } else if (conskbd_consqueue != NULL) { 1912 DPRINTF(PRINT_L1, PRINT_MASK_ALL, 1913 ("conskbd_legacy_upstream_msg: conskbd_consqueue != NULL")); 1914 putnext(conskbd_consqueue, mp); 1915 } else { 1916 /* if reached here, it must be a error */ 1917 cmn_err(CE_WARN, 1918 "kb: no destination for IOCACK/IOCNAK!"); 1919 freemsg(mp); 1920 } 1921 1922 } /* conskbd_legacy_upstream_msg() */ 1923 1924 /* 1925 * This routine is a callback routine for kbtrans module to set LED. 1926 * Kbtrans will invoke it in two cases: 1927 * 1928 * 1) application initiated request 1929 * A KIOCSLED ioctl is sent by an application. The ioctl will be 1930 * be prcoessed by queue service procedure conskbduwsrv(), which 1931 * in turn calls kbtrans to process the ioctl. Then kbtrans invokes 1932 * conskbd_streams_setled() to set LED, after that, kbtrans will 1933 * return an ACK message to upper module. 1934 * 1935 * 2) Kbtrans initiated the request 1936 * When conskbd works in TR_ASCII translation mode, if anyone of 1937 * CapsLock, NumberLock and Compose keys is pressed, kbtrans need 1938 * to set LED. In this case, there is no ioctl from upper module. 1939 * There is no requirement to send response to somebody. 1940 * 1941 * In first case, kbtrans will send response to upper module; and in the 1942 * second, we don't need to send response. So conskbd_streams_setled() 1943 * has no return value. 1944 */ 1945 static void 1946 conskbd_streams_setled(struct kbtrans_hardware *hw, int led_state) 1947 { 1948 conskbd_state_t *conskbdp = (conskbd_state_t *)hw; 1949 conskbd_lower_queue_t *lqs; 1950 mblk_t *req; 1951 1952 ASSERT(&conskbd == conskbdp); 1953 1954 if (led_state == -1) 1955 return; 1956 1957 conskbdp->conskbd_led_state = led_state; 1958 1959 /* 1960 * Basically, failing to set LED is not a fatal error, we just skip 1961 * it if this happens. 1962 */ 1963 for (lqs = conskbdp->conskbd_lqueue_list; lqs; lqs = lqs->lqs_next) { 1964 req = mkiocb(KIOCSLED); 1965 1966 if (!req) { 1967 continue; 1968 } 1969 1970 req->b_cont = allocb(sizeof (uchar_t), BPRI_MED); 1971 if (!req->b_cont) { 1972 freemsg(req); 1973 continue; 1974 } 1975 *(uchar_t *)req->b_cont->b_wptr = led_state; 1976 req->b_cont->b_wptr += sizeof (uchar_t); 1977 if (putq(lqs->lqs_queue, req) != 1) 1978 freemsg(req); 1979 } 1980 1981 } /* conskbd_streams_setled() */ 1982 1983 static void 1984 conskbd_polledio_setled(struct kbtrans_hardware *hw, int led_state) 1985 { 1986 conskbd_state_t *conskbdp = (conskbd_state_t *)hw; 1987 struct cons_polledio *cb; 1988 conskbd_lower_queue_t *lqs; 1989 1990 for (lqs = conskbdp->conskbd_lqueue_list; lqs; lqs = lqs->lqs_next) { 1991 cb = lqs->lqs_polledio; 1992 if ((cb != NULL) && (cb->cons_polledio_setled != NULL)) { 1993 cb->cons_polledio_setled(cb->cons_polledio_argument, 1994 led_state); 1995 } 1996 } 1997 1998 } /* conskbd_polledio_setled() */ 1999 2000 static boolean_t 2001 conskbd_polled_keycheck(struct kbtrans_hardware *hw, 2002 kbtrans_key_t *keycode, enum keystate *state) 2003 { 2004 conskbd_state_t *conskbdp = (conskbd_state_t *)hw; 2005 struct cons_polledio *cb; 2006 conskbd_lower_queue_t *lqs; 2007 boolean_t ret = B_FALSE; 2008 2009 for (ret = B_FALSE, lqs = conskbdp->conskbd_lqueue_list; lqs != NULL; 2010 lqs = lqs->lqs_next) { 2011 cb = lqs->lqs_polledio; 2012 if ((cb != NULL) && 2013 (cb->cons_polledio_keycheck != NULL)) { 2014 ret = cb->cons_polledio_keycheck( 2015 cb->cons_polledio_argument, keycode, state); 2016 } 2017 2018 /* Get a char from lower queue(hardware) ? */ 2019 if (ret == B_TRUE) { 2020 break; 2021 } 2022 } 2023 2024 return (ret); 2025 2026 } /* conskbd_polled_keycheck() */ 2027 2028 static boolean_t 2029 conskbd_override_kbtrans(queue_t *q, mblk_t *mp) 2030 { 2031 struct iocblk *iocp; 2032 int directio; 2033 int error; 2034 2035 if (mp->b_datap->db_type != M_IOCTL) 2036 return (B_FALSE); 2037 2038 iocp = (struct iocblk *)mp->b_rptr; 2039 2040 switch (iocp->ioc_cmd) { 2041 case KIOCGDIRECT: { 2042 /* 2043 * Don't let the kbtrans-based code see this; it will 2044 * respond incorrectly. 2045 */ 2046 register mblk_t *datap; 2047 2048 if ((datap = allocb((int)sizeof (int), BPRI_MED)) == NULL) { 2049 miocnak(q, mp, 0, ENOMEM); 2050 return (B_TRUE); 2051 } 2052 2053 *(int *)datap->b_wptr = conskbd.conskbd_directio; 2054 datap->b_wptr += sizeof (int); 2055 if (mp->b_cont) { 2056 freemsg(mp->b_cont); 2057 mp->b_cont = NULL; 2058 } 2059 mp->b_cont = datap; 2060 miocack(q, mp, sizeof (int), 0); 2061 return (B_TRUE); 2062 } 2063 2064 case KIOCSDIRECT: 2065 /* 2066 * Peek at this, set our variables, and then let the kbtrans 2067 * based code see it and respond to it. 2068 */ 2069 error = miocpullup(mp, sizeof (int)); 2070 if (error != 0) { 2071 return (B_FALSE); 2072 } 2073 2074 directio = *(int *)mp->b_cont->b_rptr; 2075 if (directio != 0 && directio != 1) { 2076 miocnak(q, mp, 0, EINVAL); 2077 return (B_TRUE); 2078 } 2079 conskbd.conskbd_directio = directio; 2080 2081 if (conskbd.conskbd_directio) { 2082 kbtrans_streams_set_queue( 2083 conskbd.conskbd_kbtrans, conskbd_regqueue); 2084 } else { 2085 kbtrans_streams_set_queue( 2086 conskbd.conskbd_kbtrans, conskbd_consqueue); 2087 } 2088 2089 /* 2090 * Let the kbtrans-based code see this and respond to it. 2091 */ 2092 return (B_FALSE); 2093 2094 default: 2095 return (B_FALSE); 2096 } 2097 2098 } /* conskbd_override_kbtrans() */ 2099 2100 2101 static void 2102 conskbd_polledio_enter(struct cons_polledio_arg *arg) 2103 { 2104 conskbd_state_t *conskbdp; 2105 struct cons_polledio *cb; 2106 conskbd_lower_queue_t *lqs; 2107 2108 conskbdp = (conskbd_state_t *)arg; 2109 for (lqs = conskbdp->conskbd_lqueue_list; lqs; lqs = lqs->lqs_next) { 2110 cb = lqs->lqs_polledio; 2111 if ((cb != NULL) && (cb->cons_polledio_enter != NULL)) { 2112 cb->cons_polledio_enter(cb->cons_polledio_argument); 2113 } 2114 } 2115 2116 } /* conskbd_polledio_enter() */ 2117 2118 static void 2119 conskbd_polledio_exit(struct cons_polledio_arg *arg) 2120 { 2121 conskbd_state_t *conskbdp; 2122 struct cons_polledio *cb; 2123 conskbd_lower_queue_t *lqs; 2124 2125 conskbdp = (conskbd_state_t *)arg; 2126 for (lqs = conskbdp->conskbd_lqueue_list; lqs; lqs = lqs->lqs_next) { 2127 cb = lqs->lqs_polledio; 2128 if ((cb != NULL) && (cb->cons_polledio_exit != NULL)) { 2129 cb->cons_polledio_exit(cb->cons_polledio_argument); 2130 } 2131 } 2132 2133 } /* conskbd_polledio_exit() */ 2134 2135 static int 2136 conskbd_polledio_getchar(struct cons_polledio_arg *arg) 2137 { 2138 conskbd_state_t *conskbdp; 2139 2140 conskbdp = (conskbd_state_t *)arg; 2141 2142 return (kbtrans_getchar(conskbdp->conskbd_kbtrans)); 2143 2144 } /* conskbd_polledio_getchar() */ 2145 2146 static int 2147 conskbd_polledio_ischar(struct cons_polledio_arg *arg) 2148 { 2149 conskbd_state_t *conskbdp; 2150 2151 conskbdp = (conskbd_state_t *)arg; 2152 2153 return (kbtrans_ischar(conskbdp->conskbd_kbtrans)); 2154 2155 } /* conskbd_polledio_ischar() */ 2156 2157 2158 static void 2159 conskbd_mux_enqueue_msg(conskbd_pending_msg_t *msg) 2160 { 2161 mutex_enter(&conskbd_msgq_lock); 2162 msg->kpm_next = conskbd_msg_queue; 2163 conskbd_msg_queue = msg; 2164 mutex_exit(&conskbd_msgq_lock); 2165 2166 } /* conskbd_mux_enqueue_msg() */ 2167 2168 /* 2169 * the messages in conskbd_msg_queue we just enqueue 2170 */ 2171 static conskbd_pending_msg_t * 2172 conskbd_mux_find_msg(mblk_t *mp) 2173 { 2174 conskbd_pending_msg_t *msg; 2175 struct iocblk *iocp; 2176 uint_t id; 2177 2178 mutex_enter(&conskbd_msgq_lock); 2179 msg = conskbd_msg_queue; 2180 2181 iocp = (struct iocblk *)mp->b_rptr; 2182 ASSERT(iocp); 2183 id = iocp->ioc_id; 2184 while (msg && msg->kpm_req_id != id) { 2185 msg = msg->kpm_next; 2186 } 2187 mutex_exit(&conskbd_msgq_lock); 2188 2189 return (msg); 2190 2191 } /* conskbd_mux_find_msg() */ 2192 2193 2194 static void 2195 conskbd_mux_dequeue_msg(conskbd_pending_msg_t *msg) 2196 { 2197 conskbd_pending_msg_t *prev; 2198 conskbd_pending_msg_t *p; 2199 2200 mutex_enter(&conskbd_msgq_lock); 2201 prev = conskbd_msg_queue; 2202 2203 for (p = prev; p != msg; p = p->kpm_next) 2204 prev = p; 2205 ASSERT(p && p == msg); 2206 if (prev == p) { 2207 conskbd_msg_queue = msg->kpm_next; 2208 } else { 2209 prev->kpm_next = p->kpm_next; 2210 } 2211 p->kpm_next = NULL; 2212 mutex_exit(&conskbd_msgq_lock); 2213 2214 } /* conskbd_mux_dequeue_msg() */ 2215 2216 #ifdef DEBUG 2217 /*ARGSUSED*/ 2218 void 2219 conskbd_dprintf(const char *fmt, ...) 2220 { 2221 char buf[256]; 2222 va_list ap; 2223 2224 va_start(ap, fmt); 2225 (void) vsprintf(buf, fmt, ap); 2226 va_end(ap); 2227 2228 cmn_err(CE_CONT, "conskbd: %s", buf); 2229 2230 } /* conskbd_dprintf() */ 2231 #endif 2232