| 1 | /* |
| 2 | * (MPSAFE) |
| 3 | * |
| 4 | * Copyright (c) 1996-1999 |
| 5 | * Kazutaka YOKOTA (yokota@zodiac.mech.utsunomiya-u.ac.jp) |
| 6 | * All rights reserved. |
| 7 | * |
| 8 | * Redistribution and use in source and binary forms, with or without |
| 9 | * modification, are permitted provided that the following conditions |
| 10 | * are met: |
| 11 | * 1. Redistributions of source code must retain the above copyright |
| 12 | * notice, this list of conditions and the following disclaimer. |
| 13 | * 2. Redistributions in binary form must reproduce the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer in the |
| 15 | * documentation and/or other materials provided with the distribution. |
| 16 | * 3. The name of the author may not be used to endorse or promote |
| 17 | * products derived from this software without specific prior written |
| 18 | * permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 21 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 22 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 23 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 24 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 25 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 26 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 27 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 28 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 29 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 30 | * SUCH DAMAGE. |
| 31 | * |
| 32 | * $FreeBSD: src/sys/dev/kbd/atkbdc.c,v 1.5.2.2 2002/03/31 11:02:02 murray Exp $ |
| 33 | * from kbdio.c,v 1.13 1998/09/25 11:55:46 yokota Exp |
| 34 | */ |
| 35 | |
| 36 | #include "opt_kbd.h" |
| 37 | #include "use_atkbdc.h" |
| 38 | |
| 39 | #include <sys/param.h> |
| 40 | #include <sys/systm.h> |
| 41 | #include <sys/bus.h> |
| 42 | #include <sys/malloc.h> |
| 43 | #include <sys/syslog.h> |
| 44 | #include <sys/rman.h> |
| 45 | |
| 46 | #include <machine/clock.h> |
| 47 | |
| 48 | #include "atkbdcreg.h" |
| 49 | |
| 50 | #include <bus/isa/isareg.h> |
| 51 | |
| 52 | #if 0 |
| 53 | #define lwkt_gettoken(x) |
| 54 | #define lwkt_reltoken(x) |
| 55 | #endif |
| 56 | |
| 57 | /* constants */ |
| 58 | |
| 59 | #define MAXKBDC MAX(NATKBDC, 1) /* XXX */ |
| 60 | |
| 61 | /* macros */ |
| 62 | |
| 63 | #ifndef MAX |
| 64 | #define MAX(x, y) ((x) > (y) ? (x) : (y)) |
| 65 | #endif |
| 66 | |
| 67 | #define kbdcp(p) ((atkbdc_softc_t *)(p)) |
| 68 | #define nextq(i) (((i) + 1) % KBDQ_BUFSIZE) |
| 69 | #define availq(q) ((q)->head != (q)->tail) |
| 70 | #if KBDIO_DEBUG >= 2 |
| 71 | #define emptyq(q) ((q)->tail = (q)->head = (q)->qcount = 0) |
| 72 | #else |
| 73 | #define emptyq(q) ((q)->tail = (q)->head = 0) |
| 74 | #endif |
| 75 | |
| 76 | #define read_data(k) (bus_space_read_1((k)->iot, (k)->ioh0, 0)) |
| 77 | #define read_status(k) (bus_space_read_1((k)->iot, (k)->ioh1, 0)) |
| 78 | #define write_data(k, d) \ |
| 79 | (bus_space_write_1((k)->iot, (k)->ioh0, 0, (d))) |
| 80 | #define write_command(k, d) \ |
| 81 | (bus_space_write_1((k)->iot, (k)->ioh1, 0, (d))) |
| 82 | |
| 83 | /* local variables */ |
| 84 | |
| 85 | /* |
| 86 | * We always need at least one copy of the kbdc_softc struct for the |
| 87 | * low-level console. As the low-level console accesses the keyboard |
| 88 | * controller before kbdc, and all other devices, is probed, we |
| 89 | * statically allocate one entry. XXX |
| 90 | */ |
| 91 | static atkbdc_softc_t default_kbdc; |
| 92 | static atkbdc_softc_t *atkbdc_softc[MAXKBDC] = { &default_kbdc }; |
| 93 | |
| 94 | static int verbose = KBDIO_DEBUG; |
| 95 | |
| 96 | /* function prototypes */ |
| 97 | |
| 98 | static int atkbdc_setup(atkbdc_softc_t *sc, bus_space_tag_t tag, |
| 99 | bus_space_handle_t h0, bus_space_handle_t h1); |
| 100 | static int addq(kbdkqueue *q, int c); |
| 101 | static int removeq(kbdkqueue *q); |
| 102 | static int wait_while_controller_busy(atkbdc_softc_t *kbdc); |
| 103 | static int wait_for_data(atkbdc_softc_t *kbdc); |
| 104 | static int wait_for_kbd_data(atkbdc_softc_t *kbdc); |
| 105 | static int wait_for_kbd_ack(atkbdc_softc_t *kbdc); |
| 106 | static int wait_for_aux_data(atkbdc_softc_t *kbdc); |
| 107 | static int wait_for_aux_ack(atkbdc_softc_t *kbdc); |
| 108 | |
| 109 | atkbdc_softc_t * |
| 110 | atkbdc_get_softc(int unit) |
| 111 | { |
| 112 | atkbdc_softc_t *sc; |
| 113 | |
| 114 | if (unit >= NELEM(atkbdc_softc)) |
| 115 | return NULL; |
| 116 | sc = atkbdc_softc[unit]; |
| 117 | if (sc == NULL) { |
| 118 | sc = kmalloc(sizeof(*sc), M_DEVBUF, M_WAITOK | M_ZERO); |
| 119 | atkbdc_softc[unit] = sc; |
| 120 | } |
| 121 | return sc; |
| 122 | } |
| 123 | |
| 124 | int |
| 125 | atkbdc_probe_unit(int unit, struct resource *port0, struct resource *port1) |
| 126 | { |
| 127 | if (rman_get_start(port0) <= 0) |
| 128 | return ENXIO; |
| 129 | if (rman_get_start(port1) <= 0) |
| 130 | return ENXIO; |
| 131 | return 0; |
| 132 | } |
| 133 | |
| 134 | int |
| 135 | atkbdc_attach_unit(int unit, atkbdc_softc_t *sc, struct resource *port0, |
| 136 | struct resource *port1) |
| 137 | { |
| 138 | return atkbdc_setup(sc, rman_get_bustag(port0), |
| 139 | rman_get_bushandle(port0), |
| 140 | rman_get_bushandle(port1)); |
| 141 | } |
| 142 | |
| 143 | /* the backdoor to the keyboard controller! XXX */ |
| 144 | int |
| 145 | atkbdc_configure(void) |
| 146 | { |
| 147 | bus_space_tag_t tag; |
| 148 | bus_space_handle_t h0; |
| 149 | bus_space_handle_t h1; |
| 150 | int port0; |
| 151 | int port1; |
| 152 | #if defined(__i386__) || defined(__x86_64__) |
| 153 | int i; |
| 154 | #endif |
| 155 | |
| 156 | port0 = IO_KBD; |
| 157 | resource_int_value("atkbdc", 0, "port", &port0); |
| 158 | port1 = IO_KBD + KBD_STATUS_PORT; |
| 159 | #if 0 |
| 160 | resource_int_value("atkbdc", 0, "port", &port0); |
| 161 | #endif |
| 162 | |
| 163 | /* XXX: tag should be passed from the caller */ |
| 164 | #if defined(__i386__) |
| 165 | tag = I386_BUS_SPACE_IO; |
| 166 | #else |
| 167 | tag = 0; /* XXX */ |
| 168 | #endif |
| 169 | |
| 170 | #if 0 /* notyet */ |
| 171 | bus_space_map(tag, port0, IO_KBDSIZE, 0, &h0); |
| 172 | bus_space_map(tag, port1, IO_KBDSIZE, 0, &h1); |
| 173 | #else |
| 174 | h0 = (bus_space_handle_t)port0; |
| 175 | h1 = (bus_space_handle_t)port1; |
| 176 | #endif |
| 177 | |
| 178 | #if defined(__i386__) || defined(__x86_64__) |
| 179 | /* |
| 180 | * Check if we really have AT keyboard controller. Poll status |
| 181 | * register until we get "all clear" indication. If no such |
| 182 | * indication comes, it probably means that there is no AT |
| 183 | * keyboard controller present. Give up in such case. Check relies |
| 184 | * on the fact that reading from non-existing in/out port returns |
| 185 | * 0xff on i386. May or may not be true on other platforms. |
| 186 | */ |
| 187 | for (i = 65536; i != 0; --i) { |
| 188 | if ((bus_space_read_1(tag, h1, 0) & 0x2) == 0) |
| 189 | break; |
| 190 | DELAY(16); |
| 191 | } |
| 192 | if (i == 0) |
| 193 | return ENXIO; |
| 194 | #endif |
| 195 | |
| 196 | return atkbdc_setup(atkbdc_softc[0], tag, h0, h1); |
| 197 | } |
| 198 | |
| 199 | static int |
| 200 | atkbdc_setup(atkbdc_softc_t *sc, bus_space_tag_t tag, bus_space_handle_t h0, |
| 201 | bus_space_handle_t h1) |
| 202 | { |
| 203 | if (sc->ioh0 == 0) { /* XXX */ |
| 204 | sc->command_byte = -1; |
| 205 | sc->command_mask = 0; |
| 206 | sc->lock = FALSE; |
| 207 | sc->kbd.head = sc->kbd.tail = 0; |
| 208 | sc->aux.head = sc->aux.tail = 0; |
| 209 | #if KBDIO_DEBUG >= 2 |
| 210 | sc->kbd.call_count = 0; |
| 211 | sc->kbd.qcount = sc->kbd.max_qcount = 0; |
| 212 | sc->aux.call_count = 0; |
| 213 | sc->aux.qcount = sc->aux.max_qcount = 0; |
| 214 | #endif |
| 215 | } |
| 216 | sc->iot = tag; |
| 217 | sc->ioh0 = h0; |
| 218 | sc->ioh1 = h1; |
| 219 | return 0; |
| 220 | } |
| 221 | |
| 222 | /* open a keyboard controller */ |
| 223 | KBDC |
| 224 | atkbdc_open(int unit) |
| 225 | { |
| 226 | if (unit <= 0) |
| 227 | unit = 0; |
| 228 | if (unit >= MAXKBDC) |
| 229 | return NULL; |
| 230 | if ((atkbdc_softc[unit]->port0 != NULL) |
| 231 | || (atkbdc_softc[unit]->ioh0 != 0)) /* XXX */ |
| 232 | return (KBDC)atkbdc_softc[unit]; |
| 233 | return NULL; |
| 234 | } |
| 235 | |
| 236 | /* |
| 237 | * I/O access arbitration in `kbdio' |
| 238 | * |
| 239 | * The `kbdio' module uses a simplistic convention to arbitrate |
| 240 | * I/O access to the controller/keyboard/mouse. The convention requires |
| 241 | * close cooperation of the calling device driver. |
| 242 | * |
| 243 | * The device drivers which utilize the `kbdio' module are assumed to |
| 244 | * have the following set of routines. |
| 245 | * a. An interrupt handler (the bottom half of the driver). |
| 246 | * b. Timeout routines which may briefly poll the keyboard controller. |
| 247 | * c. Routines outside interrupt context (the top half of the driver). |
| 248 | * They should follow the rules below: |
| 249 | * 1. The interrupt handler may assume that it always has full access |
| 250 | * to the controller/keyboard/mouse. |
| 251 | * 2. The other routines must issue `spltty()' if they wish to |
| 252 | * prevent the interrupt handler from accessing |
| 253 | * the controller/keyboard/mouse. |
| 254 | * 3. The timeout routines and the top half routines of the device driver |
| 255 | * arbitrate I/O access by observing the lock flag in `kbdio'. |
| 256 | * The flag is manipulated via `kbdc_lock()'; when one wants to |
| 257 | * perform I/O, call `kbdc_lock(kbdc, TRUE)' and proceed only if |
| 258 | * the call returns with TRUE. Otherwise the caller must back off. |
| 259 | * Call `kbdc_lock(kbdc, FALSE)' when necessary I/O operaion |
| 260 | * is finished. This mechanism does not prevent the interrupt |
| 261 | * handler from being invoked at any time and carrying out I/O. |
| 262 | * Therefore, `spltty()' must be strategically placed in the device |
| 263 | * driver code. Also note that the timeout routine may interrupt |
| 264 | * `kbdc_lock()' called by the top half of the driver, but this |
| 265 | * interruption is OK so long as the timeout routine observes |
| 266 | * rule 4 below. |
| 267 | * 4. The interrupt and timeout routines should not extend I/O operation |
| 268 | * across more than one interrupt or timeout; they must complete any |
| 269 | * necessary I/O operation within one invocation of the routine. |
| 270 | * This means that if the timeout routine acquires the lock flag, |
| 271 | * it must reset the flag to FALSE before it returns. |
| 272 | */ |
| 273 | |
| 274 | /* set/reset polling lock */ |
| 275 | int |
| 276 | kbdc_lock(KBDC p, int lock) |
| 277 | { |
| 278 | int prevlock; |
| 279 | |
| 280 | prevlock = kbdcp(p)->lock; |
| 281 | kbdcp(p)->lock = lock; |
| 282 | |
| 283 | return (prevlock != lock); |
| 284 | } |
| 285 | |
| 286 | /* check if any data is waiting to be processed */ |
| 287 | int |
| 288 | kbdc_data_ready(KBDC p) |
| 289 | { |
| 290 | return (availq(&kbdcp(p)->kbd) || availq(&kbdcp(p)->aux) |
| 291 | || (read_status(kbdcp(p)) & KBDS_ANY_BUFFER_FULL)); |
| 292 | } |
| 293 | |
| 294 | /* queuing functions */ |
| 295 | |
| 296 | static int |
| 297 | addq(kbdkqueue *q, int c) |
| 298 | { |
| 299 | if (nextq(q->tail) != q->head) { |
| 300 | q->q[q->tail] = c; |
| 301 | q->tail = nextq(q->tail); |
| 302 | #if KBDIO_DEBUG >= 2 |
| 303 | ++q->call_count; |
| 304 | ++q->qcount; |
| 305 | if (q->qcount > q->max_qcount) |
| 306 | q->max_qcount = q->qcount; |
| 307 | #endif |
| 308 | return TRUE; |
| 309 | } |
| 310 | return FALSE; |
| 311 | } |
| 312 | |
| 313 | static int |
| 314 | removeq(kbdkqueue *q) |
| 315 | { |
| 316 | int c; |
| 317 | |
| 318 | if (q->tail != q->head) { |
| 319 | c = q->q[q->head]; |
| 320 | q->head = nextq(q->head); |
| 321 | #if KBDIO_DEBUG >= 2 |
| 322 | --q->qcount; |
| 323 | #endif |
| 324 | return c; |
| 325 | } |
| 326 | return -1; |
| 327 | } |
| 328 | |
| 329 | /* |
| 330 | * device I/O routines |
| 331 | */ |
| 332 | static int |
| 333 | wait_while_controller_busy(struct atkbdc_softc *kbdc) |
| 334 | { |
| 335 | /* CPU will stay inside the loop for 100msec at most */ |
| 336 | TOTALDELAY retry = { .us = 70000, .last_clock =0 }; /* 70ms */ |
| 337 | int f; |
| 338 | unsigned char c; |
| 339 | |
| 340 | while ((f = read_status(kbdc)) & KBDS_INPUT_BUFFER_FULL) { |
| 341 | if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) { |
| 342 | DELAY(KBDD_DELAYTIME); |
| 343 | c = read_data(kbdc); |
| 344 | addq(&kbdc->kbd, c); |
| 345 | } else if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) { |
| 346 | DELAY(KBDD_DELAYTIME); |
| 347 | c = read_data(kbdc); |
| 348 | addq(&kbdc->aux, c); |
| 349 | } |
| 350 | DELAY(KBDC_DELAYTIME); |
| 351 | if (CHECKTIMEOUT(&retry)) |
| 352 | return FALSE; |
| 353 | } |
| 354 | return TRUE; |
| 355 | } |
| 356 | |
| 357 | /* |
| 358 | * wait for any data; whether it's from the controller, |
| 359 | * the keyboard, or the aux device. |
| 360 | */ |
| 361 | static int |
| 362 | wait_for_data(struct atkbdc_softc *kbdc) |
| 363 | { |
| 364 | /* CPU will stay inside the loop for 200msec at most */ |
| 365 | TOTALDELAY retry = { 200000, 0 }; /* 200ms */ |
| 366 | int f; |
| 367 | |
| 368 | while ((f = read_status(kbdc) & KBDS_ANY_BUFFER_FULL) == 0) { |
| 369 | DELAY(KBDC_DELAYTIME); |
| 370 | if (CHECKTIMEOUT(&retry)) |
| 371 | return 0; |
| 372 | } |
| 373 | DELAY(KBDD_DELAYTIME); |
| 374 | return f; |
| 375 | } |
| 376 | |
| 377 | /* wait for data from the keyboard */ |
| 378 | static int |
| 379 | wait_for_kbd_data(struct atkbdc_softc *kbdc) |
| 380 | { |
| 381 | /* CPU will stay inside the loop for 200msec at most */ |
| 382 | TOTALDELAY retry = { 200000, 0 }; /* 200ms */ |
| 383 | int f; |
| 384 | unsigned char c; |
| 385 | |
| 386 | while ((f = read_status(kbdc) & KBDS_BUFFER_FULL) |
| 387 | != KBDS_KBD_BUFFER_FULL) { |
| 388 | if (f == KBDS_AUX_BUFFER_FULL) { |
| 389 | DELAY(KBDD_DELAYTIME); |
| 390 | c = read_data(kbdc); |
| 391 | addq(&kbdc->aux, c); |
| 392 | } |
| 393 | DELAY(KBDC_DELAYTIME); |
| 394 | if (CHECKTIMEOUT(&retry)) |
| 395 | return 0; |
| 396 | } |
| 397 | DELAY(KBDD_DELAYTIME); |
| 398 | return f; |
| 399 | } |
| 400 | |
| 401 | /* |
| 402 | * wait for an ACK(FAh), RESEND(FEh), or RESET_FAIL(FCh) from the keyboard. |
| 403 | * queue anything else. |
| 404 | */ |
| 405 | static int |
| 406 | wait_for_kbd_ack(struct atkbdc_softc *kbdc) |
| 407 | { |
| 408 | /* CPU will stay inside the loop for 200msec at most */ |
| 409 | TOTALDELAY retry = { 200000, 0 }; /* 200ms */ |
| 410 | int f; |
| 411 | int b; |
| 412 | |
| 413 | while (CHECKTIMEOUT(&retry) == 0) { |
| 414 | if ((f = read_status(kbdc)) & KBDS_ANY_BUFFER_FULL) { |
| 415 | DELAY(KBDD_DELAYTIME); |
| 416 | b = read_data(kbdc); |
| 417 | if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) { |
| 418 | if ((b == KBD_ACK) || (b == KBD_RESEND) |
| 419 | || (b == KBD_RESET_FAIL)) |
| 420 | return b; |
| 421 | addq(&kbdc->kbd, b); |
| 422 | } else if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) { |
| 423 | addq(&kbdc->aux, b); |
| 424 | } |
| 425 | } |
| 426 | DELAY(KBDC_DELAYTIME); |
| 427 | } |
| 428 | return -1; |
| 429 | } |
| 430 | |
| 431 | /* wait for data from the aux device */ |
| 432 | static int |
| 433 | wait_for_aux_data(struct atkbdc_softc *kbdc) |
| 434 | { |
| 435 | /* CPU will stay inside the loop for 200msec at most */ |
| 436 | TOTALDELAY retry = { 200000, 0 }; /* 200ms */ |
| 437 | int f; |
| 438 | unsigned char b; |
| 439 | |
| 440 | while ((f = read_status(kbdc) & KBDS_BUFFER_FULL) |
| 441 | != KBDS_AUX_BUFFER_FULL) { |
| 442 | if (f == KBDS_KBD_BUFFER_FULL) { |
| 443 | DELAY(KBDD_DELAYTIME); |
| 444 | b = read_data(kbdc); |
| 445 | addq(&kbdc->kbd, b); |
| 446 | } |
| 447 | DELAY(KBDC_DELAYTIME); |
| 448 | if (CHECKTIMEOUT(&retry)) |
| 449 | return 0; |
| 450 | } |
| 451 | DELAY(KBDD_DELAYTIME); |
| 452 | return f; |
| 453 | } |
| 454 | |
| 455 | /* |
| 456 | * wait for an ACK(FAh), RESEND(FEh), or RESET_FAIL(FCh) from the aux device. |
| 457 | * queue anything else. |
| 458 | */ |
| 459 | static int |
| 460 | wait_for_aux_ack(struct atkbdc_softc *kbdc) |
| 461 | { |
| 462 | /* CPU will stay inside the loop for 200msec at most */ |
| 463 | TOTALDELAY retry = { 200000, 0 }; /* 200ms */ |
| 464 | int f; |
| 465 | int b; |
| 466 | |
| 467 | while (CHECKTIMEOUT(&retry) == 0) { |
| 468 | if ((f = read_status(kbdc)) & KBDS_ANY_BUFFER_FULL) { |
| 469 | DELAY(KBDD_DELAYTIME); |
| 470 | b = read_data(kbdc); |
| 471 | if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) { |
| 472 | if ((b == PSM_ACK) || (b == PSM_RESEND) |
| 473 | || (b == PSM_RESET_FAIL)) |
| 474 | return b; |
| 475 | addq(&kbdc->aux, b); |
| 476 | } else if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) { |
| 477 | addq(&kbdc->kbd, b); |
| 478 | } |
| 479 | } |
| 480 | DELAY(KBDC_DELAYTIME); |
| 481 | } |
| 482 | return -1; |
| 483 | } |
| 484 | |
| 485 | /* |
| 486 | * Returns read-back data or -1 on failure |
| 487 | */ |
| 488 | int |
| 489 | write_controller_w1r1(KBDC p, int c, int d) |
| 490 | { |
| 491 | if (!write_controller_command(p, c)) |
| 492 | return(-1); |
| 493 | if (!write_controller_data(p, d)) |
| 494 | return(-1); |
| 495 | return (read_controller_data(p)); |
| 496 | } |
| 497 | |
| 498 | /* write a one byte command to the controller */ |
| 499 | int |
| 500 | write_controller_command(KBDC p, int c) |
| 501 | { |
| 502 | if (!wait_while_controller_busy(kbdcp(p))) |
| 503 | return FALSE; |
| 504 | write_command(kbdcp(p), c); |
| 505 | return TRUE; |
| 506 | } |
| 507 | |
| 508 | /* write a one byte data to the controller */ |
| 509 | int |
| 510 | write_controller_data(KBDC p, int c) |
| 511 | { |
| 512 | if (!wait_while_controller_busy(kbdcp(p))) |
| 513 | return FALSE; |
| 514 | write_data(kbdcp(p), c); |
| 515 | return TRUE; |
| 516 | } |
| 517 | |
| 518 | /* write a one byte keyboard command */ |
| 519 | int |
| 520 | write_kbd_command(KBDC p, int c) |
| 521 | { |
| 522 | if (!wait_while_controller_busy(kbdcp(p))) |
| 523 | return FALSE; |
| 524 | write_data(kbdcp(p), c); |
| 525 | return TRUE; |
| 526 | } |
| 527 | |
| 528 | /* write a one byte auxiliary device command */ |
| 529 | int |
| 530 | write_aux_command(KBDC p, int c) |
| 531 | { |
| 532 | if (!write_controller_command(p, KBDC_WRITE_TO_AUX)) |
| 533 | return FALSE; |
| 534 | return write_controller_data(p, c); |
| 535 | } |
| 536 | |
| 537 | /* send a command to the keyboard and wait for ACK */ |
| 538 | int |
| 539 | send_kbd_command(KBDC p, int c) |
| 540 | { |
| 541 | int retry = KBD_MAXRETRY; |
| 542 | int res = -1; |
| 543 | |
| 544 | while (retry-- > 0) { |
| 545 | if (!write_kbd_command(p, c)) |
| 546 | continue; |
| 547 | res = wait_for_kbd_ack(kbdcp(p)); |
| 548 | if (res == KBD_ACK) |
| 549 | break; |
| 550 | } |
| 551 | return res; |
| 552 | } |
| 553 | |
| 554 | /* send a command to the auxiliary device and wait for ACK */ |
| 555 | int |
| 556 | send_aux_command(KBDC p, int c) |
| 557 | { |
| 558 | int retry = KBD_MAXRETRY; |
| 559 | int res = -1; |
| 560 | |
| 561 | while (retry-- > 0) { |
| 562 | if (!write_aux_command(p, c)) |
| 563 | continue; |
| 564 | /* |
| 565 | * FIXME: XXX |
| 566 | * The aux device may have already sent one or two bytes of |
| 567 | * status data, when a command is received. It will immediately |
| 568 | * stop data transmission, thus, leaving an incomplete data |
| 569 | * packet in our buffer. We have to discard any unprocessed |
| 570 | * data in order to remove such packets. Well, we may remove |
| 571 | * unprocessed, but necessary data byte as well... |
| 572 | */ |
| 573 | emptyq(&kbdcp(p)->aux); |
| 574 | res = wait_for_aux_ack(kbdcp(p)); |
| 575 | if (res == PSM_ACK) |
| 576 | break; |
| 577 | } |
| 578 | return res; |
| 579 | } |
| 580 | |
| 581 | /* send a command and a data to the keyboard, wait for ACKs */ |
| 582 | int |
| 583 | send_kbd_command_and_data(KBDC p, int c, int d) |
| 584 | { |
| 585 | int retry; |
| 586 | int res = -1; |
| 587 | |
| 588 | for (retry = KBD_MAXRETRY; retry > 0; --retry) { |
| 589 | if (!write_kbd_command(p, c)) |
| 590 | continue; |
| 591 | res = wait_for_kbd_ack(kbdcp(p)); |
| 592 | if (res == KBD_ACK) |
| 593 | break; |
| 594 | else if (res != KBD_RESEND) |
| 595 | return res; |
| 596 | } |
| 597 | if (retry <= 0) |
| 598 | return res; |
| 599 | |
| 600 | for (retry = KBD_MAXRETRY, res = -1; retry > 0; --retry) { |
| 601 | if (!write_kbd_command(p, d)) |
| 602 | continue; |
| 603 | res = wait_for_kbd_ack(kbdcp(p)); |
| 604 | if (res != KBD_RESEND) |
| 605 | break; |
| 606 | } |
| 607 | return res; |
| 608 | } |
| 609 | |
| 610 | /* send a command and a data to the auxiliary device, wait for ACKs */ |
| 611 | int |
| 612 | send_aux_command_and_data(KBDC p, int c, int d) |
| 613 | { |
| 614 | int retry; |
| 615 | int res = -1; |
| 616 | |
| 617 | for (retry = KBD_MAXRETRY; retry > 0; --retry) { |
| 618 | if (!write_aux_command(p, c)) |
| 619 | continue; |
| 620 | emptyq(&kbdcp(p)->aux); |
| 621 | res = wait_for_aux_ack(kbdcp(p)); |
| 622 | if (res == PSM_ACK) |
| 623 | break; |
| 624 | else if (res != PSM_RESEND) |
| 625 | return res; |
| 626 | } |
| 627 | if (retry <= 0) |
| 628 | return res; |
| 629 | |
| 630 | for (retry = KBD_MAXRETRY, res = -1; retry > 0; --retry) { |
| 631 | if (!write_aux_command(p, d)) |
| 632 | continue; |
| 633 | res = wait_for_aux_ack(kbdcp(p)); |
| 634 | if (res != PSM_RESEND) |
| 635 | break; |
| 636 | } |
| 637 | return res; |
| 638 | } |
| 639 | |
| 640 | /* |
| 641 | * read one byte from any source; whether from the controller, |
| 642 | * the keyboard, or the aux device |
| 643 | */ |
| 644 | int |
| 645 | read_controller_data(KBDC p) |
| 646 | { |
| 647 | if (availq(&kbdcp(p)->kbd)) |
| 648 | return removeq(&kbdcp(p)->kbd); |
| 649 | if (availq(&kbdcp(p)->aux)) |
| 650 | return removeq(&kbdcp(p)->aux); |
| 651 | if (!wait_for_data(kbdcp(p))) |
| 652 | return -1; /* timeout */ |
| 653 | return read_data(kbdcp(p)); |
| 654 | } |
| 655 | |
| 656 | #if KBDIO_DEBUG >= 2 |
| 657 | static int call = 0; |
| 658 | #endif |
| 659 | |
| 660 | /* read one byte from the keyboard */ |
| 661 | int |
| 662 | read_kbd_data(KBDC p) |
| 663 | { |
| 664 | unsigned char b; |
| 665 | |
| 666 | #if KBDIO_DEBUG >= 2 |
| 667 | if (++call > 2000) { |
| 668 | call = 0; |
| 669 | log(LOG_DEBUG, "kbdc: kbd q: %d calls, max %d chars, " |
| 670 | "aux q: %d calls, max %d chars\n", |
| 671 | kbdcp(p)->kbd.call_count, kbdcp(p)->kbd.max_qcount, |
| 672 | kbdcp(p)->aux.call_count, kbdcp(p)->aux.max_qcount); |
| 673 | } |
| 674 | #endif |
| 675 | |
| 676 | if (availq(&kbdcp(p)->kbd)) |
| 677 | return removeq(&kbdcp(p)->kbd); |
| 678 | if (!wait_for_kbd_data(kbdcp(p))) |
| 679 | return -1; /* timeout */ |
| 680 | b = read_data(kbdcp(p)); |
| 681 | return b; |
| 682 | } |
| 683 | |
| 684 | /* read one byte from the keyboard, but return immediately if |
| 685 | * no data is waiting |
| 686 | */ |
| 687 | int |
| 688 | read_kbd_data_no_wait(KBDC p) |
| 689 | { |
| 690 | int f; |
| 691 | unsigned char b; |
| 692 | |
| 693 | #if KBDIO_DEBUG >= 2 |
| 694 | if (++call > 2000) { |
| 695 | call = 0; |
| 696 | log(LOG_DEBUG, "kbdc: kbd q: %d calls, max %d chars, " |
| 697 | "aux q: %d calls, max %d chars\n", |
| 698 | kbdcp(p)->kbd.call_count, kbdcp(p)->kbd.max_qcount, |
| 699 | kbdcp(p)->aux.call_count, kbdcp(p)->aux.max_qcount); |
| 700 | } |
| 701 | #endif |
| 702 | |
| 703 | if (availq(&kbdcp(p)->kbd)) |
| 704 | return removeq(&kbdcp(p)->kbd); |
| 705 | f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL; |
| 706 | while (f == KBDS_AUX_BUFFER_FULL) { |
| 707 | DELAY(KBDD_DELAYTIME); |
| 708 | b = read_data(kbdcp(p)); |
| 709 | addq(&kbdcp(p)->aux, b); |
| 710 | f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL; |
| 711 | } |
| 712 | if (f == KBDS_KBD_BUFFER_FULL) { |
| 713 | DELAY(KBDD_DELAYTIME); |
| 714 | b = read_data(kbdcp(p)); |
| 715 | return (int)b; |
| 716 | } |
| 717 | return -1; /* no data */ |
| 718 | } |
| 719 | |
| 720 | /* read one byte from the aux device */ |
| 721 | int |
| 722 | read_aux_data(KBDC p) |
| 723 | { |
| 724 | unsigned char b; |
| 725 | if (availq(&kbdcp(p)->aux)) |
| 726 | return removeq(&kbdcp(p)->aux); |
| 727 | if (!wait_for_aux_data(kbdcp(p))) |
| 728 | return -1; /* timeout */ |
| 729 | b = read_data(kbdcp(p)); |
| 730 | return b; |
| 731 | } |
| 732 | |
| 733 | /* read one byte from the aux device, but return immediately if |
| 734 | * no data is waiting |
| 735 | */ |
| 736 | int |
| 737 | read_aux_data_no_wait(KBDC p) |
| 738 | { |
| 739 | unsigned char b; |
| 740 | int f; |
| 741 | |
| 742 | if (availq(&kbdcp(p)->aux)) |
| 743 | return removeq(&kbdcp(p)->aux); |
| 744 | f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL; |
| 745 | while (f == KBDS_KBD_BUFFER_FULL) { |
| 746 | DELAY(KBDD_DELAYTIME); |
| 747 | b = read_data(kbdcp(p)); |
| 748 | addq(&kbdcp(p)->kbd, b); |
| 749 | f = read_status(kbdcp(p)) & KBDS_BUFFER_FULL; |
| 750 | } |
| 751 | if (f == KBDS_AUX_BUFFER_FULL) { |
| 752 | DELAY(KBDD_DELAYTIME); |
| 753 | b = read_data(kbdcp(p)); |
| 754 | return b; |
| 755 | } |
| 756 | return -1; /* no data */ |
| 757 | } |
| 758 | |
| 759 | /* discard data from the keyboard */ |
| 760 | void |
| 761 | empty_kbd_buffer(KBDC p, int wait) |
| 762 | { |
| 763 | int t; |
| 764 | int b; |
| 765 | int f; |
| 766 | #if KBDIO_DEBUG >= 2 |
| 767 | int c1 = 0; |
| 768 | int c2 = 0; |
| 769 | #endif |
| 770 | int delta = 2; |
| 771 | |
| 772 | for (t = wait; t > 0; ) { |
| 773 | if ((f = read_status(kbdcp(p))) & KBDS_ANY_BUFFER_FULL) { |
| 774 | DELAY(KBDD_DELAYTIME); |
| 775 | b = read_data(kbdcp(p)); |
| 776 | if ((f & KBDS_BUFFER_FULL) == KBDS_AUX_BUFFER_FULL) { |
| 777 | addq(&kbdcp(p)->aux, b); |
| 778 | #if KBDIO_DEBUG >= 2 |
| 779 | ++c2; |
| 780 | } else { |
| 781 | ++c1; |
| 782 | #endif |
| 783 | } |
| 784 | t = wait; |
| 785 | } else { |
| 786 | t -= delta; |
| 787 | } |
| 788 | DELAY(delta*1000); |
| 789 | } |
| 790 | #if KBDIO_DEBUG >= 2 |
| 791 | if ((c1 > 0) || (c2 > 0)) |
| 792 | log(LOG_DEBUG, "kbdc: %d:%d char read (empty_kbd_buffer)\n", c1, c2); |
| 793 | #endif |
| 794 | |
| 795 | emptyq(&kbdcp(p)->kbd); |
| 796 | } |
| 797 | |
| 798 | /* discard data from the aux device */ |
| 799 | void |
| 800 | empty_aux_buffer(KBDC p, int wait) |
| 801 | { |
| 802 | int t; |
| 803 | int b; |
| 804 | int f; |
| 805 | #if KBDIO_DEBUG >= 2 |
| 806 | int c1 = 0; |
| 807 | int c2 = 0; |
| 808 | #endif |
| 809 | int delta = 2; |
| 810 | |
| 811 | for (t = wait; t > 0; ) { |
| 812 | if ((f = read_status(kbdcp(p))) & KBDS_ANY_BUFFER_FULL) { |
| 813 | DELAY(KBDD_DELAYTIME); |
| 814 | b = read_data(kbdcp(p)); |
| 815 | if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) { |
| 816 | addq(&kbdcp(p)->kbd, b); |
| 817 | #if KBDIO_DEBUG >= 2 |
| 818 | ++c1; |
| 819 | } else { |
| 820 | ++c2; |
| 821 | #endif |
| 822 | } |
| 823 | t = wait; |
| 824 | } else { |
| 825 | t -= delta; |
| 826 | } |
| 827 | DELAY(delta*1000); |
| 828 | } |
| 829 | #if KBDIO_DEBUG >= 2 |
| 830 | if ((c1 > 0) || (c2 > 0)) |
| 831 | log(LOG_DEBUG, "kbdc: %d:%d char read (empty_aux_buffer)\n", c1, c2); |
| 832 | #endif |
| 833 | |
| 834 | emptyq(&kbdcp(p)->aux); |
| 835 | } |
| 836 | |
| 837 | /* discard any data from the keyboard or the aux device */ |
| 838 | void |
| 839 | empty_both_buffers(KBDC p, int wait) |
| 840 | { |
| 841 | int t; |
| 842 | int f; |
| 843 | #if KBDIO_DEBUG >= 2 |
| 844 | int c1 = 0; |
| 845 | int c2 = 0; |
| 846 | #endif |
| 847 | int delta = 2; |
| 848 | |
| 849 | for (t = wait; t > 0; ) { |
| 850 | if ((f = read_status(kbdcp(p))) & KBDS_ANY_BUFFER_FULL) { |
| 851 | DELAY(KBDD_DELAYTIME); |
| 852 | (void)read_data(kbdcp(p)); |
| 853 | #if KBDIO_DEBUG >= 2 |
| 854 | if ((f & KBDS_BUFFER_FULL) == KBDS_KBD_BUFFER_FULL) |
| 855 | ++c1; |
| 856 | else |
| 857 | ++c2; |
| 858 | #endif |
| 859 | t = wait; |
| 860 | } else { |
| 861 | t -= delta; |
| 862 | } |
| 863 | DELAY(delta*1000); |
| 864 | } |
| 865 | #if KBDIO_DEBUG >= 2 |
| 866 | if ((c1 > 0) || (c2 > 0)) |
| 867 | log(LOG_DEBUG, "kbdc: %d:%d char read (empty_both_buffers)\n", c1, c2); |
| 868 | #endif |
| 869 | |
| 870 | emptyq(&kbdcp(p)->kbd); |
| 871 | emptyq(&kbdcp(p)->aux); |
| 872 | } |
| 873 | |
| 874 | /* keyboard and mouse device control */ |
| 875 | |
| 876 | /* NOTE: enable the keyboard port but disable the keyboard |
| 877 | * interrupt before calling "reset_kbd()". |
| 878 | */ |
| 879 | int |
| 880 | reset_kbd(KBDC p) |
| 881 | { |
| 882 | int retry = KBD_MAXRETRY; |
| 883 | int again = KBD_MAXWAIT; |
| 884 | int c = KBD_RESEND; /* keep the compiler happy */ |
| 885 | |
| 886 | while (retry-- > 0) { |
| 887 | empty_both_buffers(p, 10); |
| 888 | if (!write_kbd_command(p, KBDC_RESET_KBD)) |
| 889 | continue; |
| 890 | emptyq(&kbdcp(p)->kbd); |
| 891 | c = read_controller_data(p); |
| 892 | if (verbose || bootverbose) |
| 893 | log(LOG_DEBUG, "kbdc: RESET_KBD return code:%04x\n", c); |
| 894 | if (c == KBD_ACK) /* keyboard has agreed to reset itself... */ |
| 895 | break; |
| 896 | } |
| 897 | if (retry < 0) |
| 898 | return FALSE; |
| 899 | |
| 900 | while (again-- > 0) { |
| 901 | /* wait awhile, well, in fact we must wait quite loooooooooooong */ |
| 902 | DELAY(KBD_RESETDELAY*1000); |
| 903 | c = read_controller_data(p); /* RESET_DONE/RESET_FAIL */ |
| 904 | if (c != -1) /* wait again if the controller is not ready */ |
| 905 | break; |
| 906 | } |
| 907 | if (verbose || bootverbose) |
| 908 | log(LOG_DEBUG, "kbdc: RESET_KBD status:%04x\n", c); |
| 909 | if (c != KBD_RESET_DONE) |
| 910 | return FALSE; |
| 911 | return TRUE; |
| 912 | } |
| 913 | |
| 914 | /* NOTE: enable the aux port but disable the aux interrupt |
| 915 | * before calling `reset_aux_dev()'. |
| 916 | */ |
| 917 | int |
| 918 | reset_aux_dev(KBDC p) |
| 919 | { |
| 920 | int retry = KBD_MAXRETRY; |
| 921 | int again = KBD_MAXWAIT; |
| 922 | int c = PSM_RESEND; /* keep the compiler happy */ |
| 923 | |
| 924 | while (retry-- > 0) { |
| 925 | empty_both_buffers(p, 10); |
| 926 | if (!write_aux_command(p, PSMC_RESET_DEV)) |
| 927 | continue; |
| 928 | emptyq(&kbdcp(p)->aux); |
| 929 | /* NOTE: Compaq Armada laptops require extra delay here. XXX */ |
| 930 | for (again = KBD_MAXWAIT; again > 0; --again) { |
| 931 | DELAY(KBD_RESETDELAY*1000); |
| 932 | c = read_aux_data_no_wait(p); |
| 933 | if (c != -1) |
| 934 | break; |
| 935 | } |
| 936 | if (verbose || bootverbose) |
| 937 | log(LOG_DEBUG, "kbdc: RESET_AUX return code:%04x\n", c); |
| 938 | if (c == PSM_ACK) /* aux dev is about to reset... */ |
| 939 | break; |
| 940 | } |
| 941 | if (retry < 0) |
| 942 | return FALSE; |
| 943 | |
| 944 | for (again = KBD_MAXWAIT; again > 0; --again) { |
| 945 | /* wait awhile, well, quite looooooooooooong */ |
| 946 | DELAY(KBD_RESETDELAY*1000); |
| 947 | c = read_aux_data_no_wait(p); /* RESET_DONE/RESET_FAIL */ |
| 948 | if (c != -1) /* wait again if the controller is not ready */ |
| 949 | break; |
| 950 | } |
| 951 | if (verbose || bootverbose) |
| 952 | log(LOG_DEBUG, "kbdc: RESET_AUX status:%04x\n", c); |
| 953 | if (c != PSM_RESET_DONE) /* reset status */ |
| 954 | return FALSE; |
| 955 | |
| 956 | c = read_aux_data(p); /* device ID */ |
| 957 | if (verbose || bootverbose) |
| 958 | log(LOG_DEBUG, "kbdc: RESET_AUX ID:%04x\n", c); |
| 959 | /* NOTE: we could check the device ID now, but leave it later... */ |
| 960 | return TRUE; |
| 961 | } |
| 962 | |
| 963 | /* controller diagnostics and setup */ |
| 964 | |
| 965 | int |
| 966 | test_controller(KBDC p) |
| 967 | { |
| 968 | int retry = KBD_MAXRETRY; |
| 969 | int again = KBD_MAXWAIT; |
| 970 | int c = KBD_DIAG_FAIL; |
| 971 | |
| 972 | while (retry-- > 0) { |
| 973 | empty_both_buffers(p, 10); |
| 974 | if (write_controller_command(p, KBDC_DIAGNOSE)) |
| 975 | break; |
| 976 | } |
| 977 | if (retry < 0) |
| 978 | return FALSE; |
| 979 | |
| 980 | emptyq(&kbdcp(p)->kbd); |
| 981 | while (again-- > 0) { |
| 982 | /* wait awhile */ |
| 983 | DELAY(KBD_RESETDELAY*1000); |
| 984 | c = read_controller_data(p); /* DIAG_DONE/DIAG_FAIL */ |
| 985 | if (c != -1) /* wait again if the controller is not ready */ |
| 986 | break; |
| 987 | } |
| 988 | if (verbose || bootverbose) |
| 989 | log(LOG_DEBUG, "kbdc: DIAGNOSE status:%04x\n", c); |
| 990 | return (c == KBD_DIAG_DONE); |
| 991 | } |
| 992 | |
| 993 | int |
| 994 | test_kbd_port(KBDC p) |
| 995 | { |
| 996 | int retry = KBD_MAXRETRY; |
| 997 | int again = KBD_MAXWAIT; |
| 998 | int c = -1; |
| 999 | |
| 1000 | while (retry-- > 0) { |
| 1001 | empty_both_buffers(p, 10); |
| 1002 | if (write_controller_command(p, KBDC_TEST_KBD_PORT)) |
| 1003 | break; |
| 1004 | } |
| 1005 | if (retry < 0) |
| 1006 | return FALSE; |
| 1007 | |
| 1008 | emptyq(&kbdcp(p)->kbd); |
| 1009 | while (again-- > 0) { |
| 1010 | c = read_controller_data(p); |
| 1011 | if (c != -1) /* try again if the controller is not ready */ |
| 1012 | break; |
| 1013 | } |
| 1014 | if (verbose || bootverbose) |
| 1015 | log(LOG_DEBUG, "kbdc: TEST_KBD_PORT status:%04x\n", c); |
| 1016 | return c; |
| 1017 | } |
| 1018 | |
| 1019 | int |
| 1020 | test_aux_port(KBDC p) |
| 1021 | { |
| 1022 | int retry = KBD_MAXRETRY; |
| 1023 | int again = KBD_MAXWAIT; |
| 1024 | int c = -1; |
| 1025 | |
| 1026 | while (retry-- > 0) { |
| 1027 | empty_both_buffers(p, 10); |
| 1028 | if (write_controller_command(p, KBDC_TEST_AUX_PORT)) |
| 1029 | break; |
| 1030 | } |
| 1031 | if (retry < 0) |
| 1032 | return FALSE; |
| 1033 | |
| 1034 | emptyq(&kbdcp(p)->kbd); |
| 1035 | while (again-- > 0) { |
| 1036 | c = read_controller_data(p); |
| 1037 | if (c != -1) /* try again if the controller is not ready */ |
| 1038 | break; |
| 1039 | } |
| 1040 | if (verbose || bootverbose) |
| 1041 | log(LOG_DEBUG, "kbdc: TEST_AUX_PORT status:%04x\n", c); |
| 1042 | return c; |
| 1043 | } |
| 1044 | |
| 1045 | int |
| 1046 | kbdc_get_device_mask(KBDC p) |
| 1047 | { |
| 1048 | return kbdcp(p)->command_mask; |
| 1049 | } |
| 1050 | |
| 1051 | void |
| 1052 | kbdc_set_device_mask(KBDC p, int mask) |
| 1053 | { |
| 1054 | kbdcp(p)->command_mask = |
| 1055 | mask & (KBD_KBD_CONTROL_BITS | KBD_AUX_CONTROL_BITS); |
| 1056 | } |
| 1057 | |
| 1058 | int |
| 1059 | get_controller_command_byte(KBDC p) |
| 1060 | { |
| 1061 | if (kbdcp(p)->command_byte != -1) |
| 1062 | return kbdcp(p)->command_byte; |
| 1063 | if (!write_controller_command(p, KBDC_GET_COMMAND_BYTE)) |
| 1064 | return -1; |
| 1065 | emptyq(&kbdcp(p)->kbd); |
| 1066 | kbdcp(p)->command_byte = read_controller_data(p); |
| 1067 | return kbdcp(p)->command_byte; |
| 1068 | } |
| 1069 | |
| 1070 | int |
| 1071 | set_controller_command_byte(KBDC p, int mask, int command) |
| 1072 | { |
| 1073 | if (get_controller_command_byte(p) == -1) |
| 1074 | return FALSE; |
| 1075 | |
| 1076 | command = (kbdcp(p)->command_byte & ~mask) | (command & mask); |
| 1077 | #if 1 |
| 1078 | if (mask & KBD_DISABLE_KBD_PORT) { |
| 1079 | if (command & KBD_DISABLE_KBD_PORT) { |
| 1080 | if (!write_controller_command(p, KBDC_DISABLE_KBD_PORT)) |
| 1081 | return FALSE; |
| 1082 | } |
| 1083 | } |
| 1084 | #endif |
| 1085 | if (!write_controller_command(p, KBDC_SET_COMMAND_BYTE)) |
| 1086 | return FALSE; |
| 1087 | if (!write_controller_data(p, command)) |
| 1088 | return FALSE; |
| 1089 | #if 0 |
| 1090 | if (mask & KBD_DISABLE_KBD_PORT) { |
| 1091 | if ((command & KBD_DISABLE_KBD_PORT) == 0) { |
| 1092 | if (!write_controller_command(p, KBDC_ENABLE_KBD_PORT)) |
| 1093 | return FALSE; |
| 1094 | } |
| 1095 | } |
| 1096 | #endif |
| 1097 | kbdcp(p)->command_byte = command; |
| 1098 | |
| 1099 | if (verbose) |
| 1100 | log(LOG_DEBUG, "kbdc: new command byte:%04x (set_controller...)\n", |
| 1101 | command); |
| 1102 | |
| 1103 | return TRUE; |
| 1104 | } |