| 1 | /* $NetBSD: pckbc.c,v 1.59 2016/07/14 10:19:06 msaitoh Exp $ */ |
| 2 | |
| 3 | /* |
| 4 | * Copyright (c) 2004 Ben Harris. |
| 5 | * Copyright (c) 1998 |
| 6 | * Matthias Drochner. 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 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | */ |
| 28 | |
| 29 | #include <sys/cdefs.h> |
| 30 | __KERNEL_RCSID(0, "$NetBSD: pckbc.c,v 1.59 2016/07/14 10:19:06 msaitoh Exp $" ); |
| 31 | |
| 32 | #include <sys/param.h> |
| 33 | #include <sys/systm.h> |
| 34 | #include <sys/callout.h> |
| 35 | #include <sys/kernel.h> |
| 36 | #include <sys/proc.h> |
| 37 | #include <sys/device.h> |
| 38 | #include <sys/malloc.h> |
| 39 | #include <sys/errno.h> |
| 40 | #include <sys/queue.h> |
| 41 | |
| 42 | #include <sys/bus.h> |
| 43 | |
| 44 | #include <dev/ic/i8042reg.h> |
| 45 | #include <dev/ic/pckbcvar.h> |
| 46 | |
| 47 | #include <dev/pckbport/pckbportvar.h> |
| 48 | |
| 49 | #include "locators.h" |
| 50 | |
| 51 | #include <sys/rndsource.h> |
| 52 | |
| 53 | /* data per slave device */ |
| 54 | struct pckbc_slotdata { |
| 55 | int polling; /* don't process data in interrupt handler */ |
| 56 | int poll_data; /* data read from inr handler if polling */ |
| 57 | int poll_stat; /* status read from inr handler if polling */ |
| 58 | krndsource_t rnd_source; |
| 59 | }; |
| 60 | |
| 61 | static void pckbc_init_slotdata(struct pckbc_slotdata *); |
| 62 | static int pckbc_attach_slot(struct pckbc_softc *, pckbc_slot_t); |
| 63 | |
| 64 | struct pckbc_internal pckbc_consdata; |
| 65 | int pckbc_console_attached; |
| 66 | |
| 67 | static int pckbc_console; |
| 68 | static struct pckbc_slotdata pckbc_cons_slotdata; |
| 69 | |
| 70 | static int pckbc_xt_translation(void *, pckbport_slot_t, int); |
| 71 | static int pckbc_send_devcmd(void *, pckbport_slot_t, u_char); |
| 72 | static void pckbc_slot_enable(void *, pckbport_slot_t, int); |
| 73 | static void pckbc_intr_establish(void *, pckbport_slot_t); |
| 74 | static void pckbc_set_poll(void *, pckbc_slot_t, int on); |
| 75 | |
| 76 | static int pckbc_wait_output(bus_space_tag_t, bus_space_handle_t); |
| 77 | |
| 78 | static int pckbc_get8042cmd(struct pckbc_internal *); |
| 79 | static int pckbc_put8042cmd(struct pckbc_internal *); |
| 80 | |
| 81 | void pckbc_cleanqueue(struct pckbc_slotdata *); |
| 82 | void pckbc_cleanup(void *); |
| 83 | int pckbc_cmdresponse(struct pckbc_internal *, pckbc_slot_t, u_char); |
| 84 | void pckbc_start(struct pckbc_internal *, pckbc_slot_t); |
| 85 | |
| 86 | const char * const pckbc_slot_names[] = { "kbd" , "aux" }; |
| 87 | |
| 88 | static struct pckbport_accessops const pckbc_ops = { |
| 89 | pckbc_xt_translation, |
| 90 | pckbc_send_devcmd, |
| 91 | pckbc_poll_data1, |
| 92 | pckbc_slot_enable, |
| 93 | pckbc_intr_establish, |
| 94 | pckbc_set_poll |
| 95 | }; |
| 96 | |
| 97 | #define KBD_DELAY DELAY(8) |
| 98 | |
| 99 | static inline int |
| 100 | pckbc_wait_output(bus_space_tag_t iot, bus_space_handle_t ioh_c) |
| 101 | { |
| 102 | u_int i; |
| 103 | |
| 104 | for (i = 100000; i; i--) |
| 105 | if (!(bus_space_read_1(iot, ioh_c, 0) & KBS_IBF)) { |
| 106 | KBD_DELAY; |
| 107 | return (1); |
| 108 | } |
| 109 | return (0); |
| 110 | } |
| 111 | |
| 112 | int |
| 113 | pckbc_send_cmd(bus_space_tag_t iot, bus_space_handle_t ioh_c, u_char val) |
| 114 | { |
| 115 | if (!pckbc_wait_output(iot, ioh_c)) |
| 116 | return (0); |
| 117 | bus_space_write_1(iot, ioh_c, 0, val); |
| 118 | return (1); |
| 119 | } |
| 120 | |
| 121 | /* |
| 122 | * Note: the spl games here are to deal with some strange PC kbd controllers |
| 123 | * in some system configurations. |
| 124 | * This is not canonical way to handle polling input. |
| 125 | */ |
| 126 | int |
| 127 | pckbc_poll_data1(void *pt, pckbc_slot_t slot) |
| 128 | { |
| 129 | struct pckbc_internal *t = pt; |
| 130 | struct pckbc_slotdata *q = t->t_slotdata[slot]; |
| 131 | int s; |
| 132 | u_char stat, c; |
| 133 | int i = 100; /* polls for ~100ms */ |
| 134 | int checkaux = t->t_haveaux; |
| 135 | |
| 136 | s = splhigh(); |
| 137 | |
| 138 | if (q && q->polling && q->poll_data != -1 && q->poll_stat != -1) { |
| 139 | stat = q->poll_stat; |
| 140 | c = q->poll_data; |
| 141 | q->poll_data = -1; |
| 142 | q->poll_stat = -1; |
| 143 | goto process; |
| 144 | } |
| 145 | |
| 146 | for (; i; i--, delay(1000)) { |
| 147 | stat = bus_space_read_1(t->t_iot, t->t_ioh_c, 0); |
| 148 | if (stat & KBS_DIB) { |
| 149 | KBD_DELAY; |
| 150 | c = bus_space_read_1(t->t_iot, t->t_ioh_d, 0); |
| 151 | |
| 152 | process: |
| 153 | if (checkaux && (stat & 0x20)) { /* aux data */ |
| 154 | if (slot != PCKBC_AUX_SLOT) { |
| 155 | #ifdef PCKBCDEBUG |
| 156 | printf("pckbc: lost aux 0x%x\n" , c); |
| 157 | #endif |
| 158 | continue; |
| 159 | } |
| 160 | } else { |
| 161 | if (slot == PCKBC_AUX_SLOT) { |
| 162 | #ifdef PCKBCDEBUG |
| 163 | printf("pckbc: lost kbd 0x%x\n" , c); |
| 164 | #endif |
| 165 | continue; |
| 166 | } |
| 167 | } |
| 168 | splx(s); |
| 169 | return (c); |
| 170 | } |
| 171 | } |
| 172 | |
| 173 | splx(s); |
| 174 | return (-1); |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * Get the current command byte. |
| 179 | */ |
| 180 | static int |
| 181 | pckbc_get8042cmd(struct pckbc_internal *t) |
| 182 | { |
| 183 | bus_space_tag_t iot = t->t_iot; |
| 184 | bus_space_handle_t ioh_c = t->t_ioh_c; |
| 185 | int data; |
| 186 | |
| 187 | if (!pckbc_send_cmd(iot, ioh_c, K_RDCMDBYTE)) |
| 188 | return (0); |
| 189 | data = pckbc_poll_data1(t, PCKBC_KBD_SLOT); |
| 190 | if (data == -1) |
| 191 | return (0); |
| 192 | t->t_cmdbyte = data; |
| 193 | return (1); |
| 194 | } |
| 195 | |
| 196 | /* |
| 197 | * Pass command byte to keyboard controller (8042). |
| 198 | */ |
| 199 | static int |
| 200 | pckbc_put8042cmd(struct pckbc_internal *t) |
| 201 | { |
| 202 | bus_space_tag_t iot = t->t_iot; |
| 203 | bus_space_handle_t ioh_d = t->t_ioh_d; |
| 204 | bus_space_handle_t ioh_c = t->t_ioh_c; |
| 205 | |
| 206 | if (!pckbc_send_cmd(iot, ioh_c, K_LDCMDBYTE)) |
| 207 | return (0); |
| 208 | if (!pckbc_wait_output(iot, ioh_c)) |
| 209 | return (0); |
| 210 | bus_space_write_1(iot, ioh_d, 0, t->t_cmdbyte); |
| 211 | return (1); |
| 212 | } |
| 213 | |
| 214 | static int |
| 215 | pckbc_send_devcmd(void *pt, pckbc_slot_t slot, u_char val) |
| 216 | { |
| 217 | struct pckbc_internal *t = pt; |
| 218 | bus_space_tag_t iot = t->t_iot; |
| 219 | bus_space_handle_t ioh_d = t->t_ioh_d; |
| 220 | bus_space_handle_t ioh_c = t->t_ioh_c; |
| 221 | |
| 222 | if (slot == PCKBC_AUX_SLOT) { |
| 223 | if (!pckbc_send_cmd(iot, ioh_c, KBC_AUXWRITE)) |
| 224 | return (0); |
| 225 | } |
| 226 | if (!pckbc_wait_output(iot, ioh_c)) |
| 227 | return (0); |
| 228 | bus_space_write_1(iot, ioh_d, 0, val); |
| 229 | return (1); |
| 230 | } |
| 231 | |
| 232 | int |
| 233 | pckbc_is_console(bus_space_tag_t iot, bus_addr_t addr) |
| 234 | { |
| 235 | if (pckbc_console && !pckbc_console_attached && |
| 236 | bus_space_is_equal(pckbc_consdata.t_iot, iot) && |
| 237 | pckbc_consdata.t_addr == addr) |
| 238 | return (1); |
| 239 | return (0); |
| 240 | } |
| 241 | |
| 242 | static int |
| 243 | pckbc_attach_slot(struct pckbc_softc *sc, pckbc_slot_t slot) |
| 244 | { |
| 245 | struct pckbc_internal *t = sc->id; |
| 246 | void *sdata; |
| 247 | device_t child; |
| 248 | int alloced = 0; |
| 249 | |
| 250 | if (t->t_slotdata[slot] == NULL) { |
| 251 | sdata = malloc(sizeof(struct pckbc_slotdata), |
| 252 | M_DEVBUF, M_NOWAIT); |
| 253 | if (sdata == NULL) { |
| 254 | aprint_error_dev(sc->sc_dv, "no memory\n" ); |
| 255 | return (0); |
| 256 | } |
| 257 | t->t_slotdata[slot] = sdata; |
| 258 | pckbc_init_slotdata(t->t_slotdata[slot]); |
| 259 | alloced++; |
| 260 | } |
| 261 | |
| 262 | child = pckbport_attach_slot(sc->sc_dv, t->t_pt, slot); |
| 263 | |
| 264 | if (child == NULL && alloced) { |
| 265 | free(t->t_slotdata[slot], M_DEVBUF); |
| 266 | t->t_slotdata[slot] = NULL; |
| 267 | } |
| 268 | |
| 269 | if (child != NULL && t->t_slotdata[slot] != NULL) |
| 270 | rnd_attach_source(&t->t_slotdata[slot]->rnd_source, |
| 271 | device_xname(child), RND_TYPE_TTY, RND_FLAG_DEFAULT); |
| 272 | |
| 273 | return child != NULL; |
| 274 | } |
| 275 | |
| 276 | void |
| 277 | pckbc_attach(struct pckbc_softc *sc) |
| 278 | { |
| 279 | struct pckbc_internal *t; |
| 280 | bus_space_tag_t iot; |
| 281 | bus_space_handle_t ioh_d, ioh_c; |
| 282 | int res; |
| 283 | u_char cmdbits = 0; |
| 284 | |
| 285 | t = sc->id; |
| 286 | iot = t->t_iot; |
| 287 | ioh_d = t->t_ioh_d; |
| 288 | ioh_c = t->t_ioh_c; |
| 289 | |
| 290 | t->t_pt = pckbport_attach(t, &pckbc_ops); |
| 291 | if (t->t_pt == NULL) { |
| 292 | aprint_error(": attach failed\n" ); |
| 293 | return; |
| 294 | } |
| 295 | |
| 296 | /* flush */ |
| 297 | (void) pckbc_poll_data1(t, PCKBC_KBD_SLOT); |
| 298 | |
| 299 | /* set initial cmd byte */ |
| 300 | if (!pckbc_put8042cmd(t)) { |
| 301 | aprint_error("pckbc: cmd word write error\n" ); |
| 302 | return; |
| 303 | } |
| 304 | |
| 305 | /* |
| 306 | * XXX Don't check the keyboard port. There are broken keyboard controllers |
| 307 | * which don't pass the test but work normally otherwise. |
| 308 | */ |
| 309 | #if 0 |
| 310 | /* |
| 311 | * check kbd port ok |
| 312 | */ |
| 313 | if (!pckbc_send_cmd(iot, ioh_c, KBC_KBDTEST)) |
| 314 | return; |
| 315 | res = pckbc_poll_data1(t, PCKBC_KBD_SLOT, 0); |
| 316 | |
| 317 | /* |
| 318 | * Normally, we should get a "0" here. |
| 319 | * But there are keyboard controllers behaving differently. |
| 320 | */ |
| 321 | if (res == 0 || res == 0xfa || res == 0x01 || res == 0xab) { |
| 322 | #ifdef PCKBCDEBUG |
| 323 | if (res != 0) |
| 324 | printf("pckbc: returned %x on kbd slot test\n" , res); |
| 325 | #endif |
| 326 | if (pckbc_attach_slot(sc, PCKBC_KBD_SLOT)) |
| 327 | cmdbits |= KC8_KENABLE; |
| 328 | } else { |
| 329 | printf("pckbc: kbd port test: %x\n" , res); |
| 330 | return; |
| 331 | } |
| 332 | #else |
| 333 | if (pckbc_attach_slot(sc, PCKBC_KBD_SLOT)) |
| 334 | cmdbits |= KC8_KENABLE; |
| 335 | #endif /* 0 */ |
| 336 | |
| 337 | /* |
| 338 | * Check aux port ok. |
| 339 | * Avoid KBC_AUXTEST because it hangs some older controllers |
| 340 | * (eg UMC880?). |
| 341 | */ |
| 342 | if (!pckbc_send_cmd(iot, ioh_c, KBC_AUXECHO)) { |
| 343 | aprint_error("pckbc: aux echo error 1\n" ); |
| 344 | goto nomouse; |
| 345 | } |
| 346 | if (!pckbc_wait_output(iot, ioh_c)) { |
| 347 | aprint_error("pckbc: aux echo error 2\n" ); |
| 348 | goto nomouse; |
| 349 | } |
| 350 | t->t_haveaux = 1; |
| 351 | bus_space_write_1(iot, ioh_d, 0, 0x5a); /* a random value */ |
| 352 | res = pckbc_poll_data1(t, PCKBC_AUX_SLOT); |
| 353 | |
| 354 | /* |
| 355 | * The following is needed to find the aux port on the Tadpole |
| 356 | * SPARCle. |
| 357 | */ |
| 358 | if (res == -1 && ISSET(t->t_flags, PCKBC_NEED_AUXWRITE)) { |
| 359 | /* Read of aux echo timed out, try again */ |
| 360 | if (!pckbc_send_cmd(iot, ioh_c, KBC_AUXWRITE)) |
| 361 | goto nomouse; |
| 362 | if (!pckbc_wait_output(iot, ioh_c)) |
| 363 | goto nomouse; |
| 364 | bus_space_write_1(iot, ioh_d, 0, 0x5a); |
| 365 | res = pckbc_poll_data1(t, PCKBC_AUX_SLOT); |
| 366 | } |
| 367 | if (res != -1) { |
| 368 | /* |
| 369 | * In most cases, the 0x5a gets echoed. |
| 370 | * Some older controllers (Gateway 2000 circa 1993) |
| 371 | * return 0xfe here. |
| 372 | * We are satisfied if there is anything in the |
| 373 | * aux output buffer. |
| 374 | */ |
| 375 | if (pckbc_attach_slot(sc, PCKBC_AUX_SLOT)) |
| 376 | cmdbits |= KC8_MENABLE; |
| 377 | } else { |
| 378 | |
| 379 | #ifdef PCKBCDEBUG |
| 380 | printf("pckbc: aux echo test failed\n" ); |
| 381 | #endif |
| 382 | t->t_haveaux = 0; |
| 383 | } |
| 384 | |
| 385 | nomouse: |
| 386 | /* enable needed interrupts */ |
| 387 | t->t_cmdbyte |= cmdbits; |
| 388 | if (!pckbc_put8042cmd(t)) |
| 389 | aprint_error("pckbc: cmd word write error\n" ); |
| 390 | } |
| 391 | |
| 392 | static void |
| 393 | pckbc_init_slotdata(struct pckbc_slotdata *q) |
| 394 | { |
| 395 | |
| 396 | q->polling = 0; |
| 397 | } |
| 398 | |
| 399 | /* |
| 400 | * switch scancode translation on / off |
| 401 | * return nonzero on success |
| 402 | */ |
| 403 | static int |
| 404 | pckbc_xt_translation(void *self, pckbc_slot_t slot, int on) |
| 405 | { |
| 406 | struct pckbc_internal *t = self; |
| 407 | int ison; |
| 408 | |
| 409 | if (ISSET(t->t_flags, PCKBC_CANT_TRANSLATE)) |
| 410 | return (-1); |
| 411 | |
| 412 | if (slot != PCKBC_KBD_SLOT) { |
| 413 | /* translation only for kbd slot */ |
| 414 | if (on) |
| 415 | return (0); |
| 416 | else |
| 417 | return (1); |
| 418 | } |
| 419 | |
| 420 | ison = t->t_cmdbyte & KC8_TRANS; |
| 421 | if ((on && ison) || (!on && !ison)) |
| 422 | return (1); |
| 423 | |
| 424 | t->t_cmdbyte ^= KC8_TRANS; |
| 425 | if (!pckbc_put8042cmd(t)) |
| 426 | return (0); |
| 427 | |
| 428 | /* read back to be sure */ |
| 429 | if (!pckbc_get8042cmd(t)) |
| 430 | return (0); |
| 431 | |
| 432 | ison = t->t_cmdbyte & KC8_TRANS; |
| 433 | if ((on && ison) || (!on && !ison)) |
| 434 | return (1); |
| 435 | return (0); |
| 436 | } |
| 437 | |
| 438 | static const struct pckbc_portcmd { |
| 439 | u_char cmd_en, cmd_dis; |
| 440 | } pckbc_portcmd[2] = { |
| 441 | { |
| 442 | KBC_KBDENABLE, KBC_KBDDISABLE, |
| 443 | }, { |
| 444 | KBC_AUXENABLE, KBC_AUXDISABLE, |
| 445 | } |
| 446 | }; |
| 447 | |
| 448 | void |
| 449 | pckbc_slot_enable(void *self, pckbc_slot_t slot, int on) |
| 450 | { |
| 451 | struct pckbc_internal *t = (struct pckbc_internal *)self; |
| 452 | const struct pckbc_portcmd *cmd; |
| 453 | |
| 454 | cmd = &pckbc_portcmd[slot]; |
| 455 | |
| 456 | if (!pckbc_send_cmd(t->t_iot, t->t_ioh_c, |
| 457 | on ? cmd->cmd_en : cmd->cmd_dis)) |
| 458 | printf("pckbc: pckbc_slot_enable(%d) failed\n" , on); |
| 459 | } |
| 460 | |
| 461 | static void |
| 462 | pckbc_set_poll(void *self, pckbc_slot_t slot, int on) |
| 463 | { |
| 464 | struct pckbc_internal *t = (struct pckbc_internal *)self; |
| 465 | |
| 466 | t->t_slotdata[slot]->polling = on; |
| 467 | |
| 468 | if (on) { |
| 469 | t->t_slotdata[slot]->poll_data = -1; |
| 470 | t->t_slotdata[slot]->poll_stat = -1; |
| 471 | } else { |
| 472 | int s; |
| 473 | |
| 474 | /* |
| 475 | * If disabling polling on a device that's been configured, |
| 476 | * make sure there are no bytes left in the FIFO, holding up |
| 477 | * the interrupt line. Otherwise we won't get any further |
| 478 | * interrupts. |
| 479 | */ |
| 480 | if (t->t_sc) { |
| 481 | s = spltty(); |
| 482 | pckbcintr(t->t_sc); |
| 483 | splx(s); |
| 484 | } |
| 485 | } |
| 486 | } |
| 487 | |
| 488 | static void |
| 489 | pckbc_intr_establish(void *pt, pckbport_slot_t slot) |
| 490 | { |
| 491 | struct pckbc_internal *t = pt; |
| 492 | |
| 493 | (*t->t_sc->intr_establish)(t->t_sc, slot); |
| 494 | } |
| 495 | |
| 496 | int |
| 497 | pckbcintr_hard(void *vsc) |
| 498 | { |
| 499 | struct pckbc_softc *sc = (struct pckbc_softc *)vsc; |
| 500 | struct pckbc_internal *t = sc->id; |
| 501 | u_char stat; |
| 502 | pckbc_slot_t slot; |
| 503 | struct pckbc_slotdata *q; |
| 504 | int served = 0, data, next, s; |
| 505 | |
| 506 | for(;;) { |
| 507 | stat = bus_space_read_1(t->t_iot, t->t_ioh_c, 0); |
| 508 | if (!(stat & KBS_DIB)) |
| 509 | break; |
| 510 | |
| 511 | served = 1; |
| 512 | |
| 513 | slot = (t->t_haveaux && (stat & 0x20)) ? |
| 514 | PCKBC_AUX_SLOT : PCKBC_KBD_SLOT; |
| 515 | q = t->t_slotdata[slot]; |
| 516 | |
| 517 | if (!q) { |
| 518 | /* XXX do something for live insertion? */ |
| 519 | printf("pckbc: no dev for slot %d\n" , slot); |
| 520 | KBD_DELAY; |
| 521 | (void) bus_space_read_1(t->t_iot, t->t_ioh_d, 0); |
| 522 | continue; |
| 523 | } |
| 524 | |
| 525 | KBD_DELAY; |
| 526 | data = bus_space_read_1(t->t_iot, t->t_ioh_d, 0); |
| 527 | |
| 528 | rnd_add_uint32(&q->rnd_source, (stat<<8)|data); |
| 529 | |
| 530 | if (q->polling) { |
| 531 | q->poll_data = data; |
| 532 | q->poll_stat = stat; |
| 533 | break; /* pckbc_poll_data() will get it */ |
| 534 | } |
| 535 | |
| 536 | #if 0 /* XXXBJH */ |
| 537 | if (CMD_IN_QUEUE(q) && pckbc_cmdresponse(t, slot, data)) |
| 538 | continue; |
| 539 | #endif |
| 540 | |
| 541 | s = splhigh(); |
| 542 | next = (t->rbuf_write+1) % PCKBC_RBUF_SIZE; |
| 543 | if (next == t->rbuf_read) { |
| 544 | splx(s); |
| 545 | break; |
| 546 | } |
| 547 | t->rbuf[t->rbuf_write].data = data; |
| 548 | t->rbuf[t->rbuf_write].slot = slot; |
| 549 | t->rbuf_write = next; |
| 550 | splx(s); |
| 551 | } |
| 552 | |
| 553 | return (served); |
| 554 | } |
| 555 | |
| 556 | void |
| 557 | pckbcintr_soft(void *vsc) |
| 558 | { |
| 559 | struct pckbc_softc *sc = vsc; |
| 560 | struct pckbc_internal *t = sc->id; |
| 561 | int data, slot, s; |
| 562 | #ifndef __GENERIC_SOFT_INTERRUPTS_ALL_LEVELS |
| 563 | int st; |
| 564 | |
| 565 | st = spltty(); |
| 566 | #endif |
| 567 | |
| 568 | s = splhigh(); |
| 569 | while (t->rbuf_read != t->rbuf_write) { |
| 570 | slot = t->rbuf[t->rbuf_read].slot; |
| 571 | data = t->rbuf[t->rbuf_read].data; |
| 572 | t->rbuf_read = (t->rbuf_read+1) % PCKBC_RBUF_SIZE; |
| 573 | splx(s); |
| 574 | pckbportintr(t->t_pt, slot, data); |
| 575 | s = splhigh(); |
| 576 | } |
| 577 | splx(s); |
| 578 | |
| 579 | |
| 580 | #ifndef __GENERIC_SOFT_INTERRUPTS_ALL_LEVELS |
| 581 | splx(st); |
| 582 | #endif |
| 583 | } |
| 584 | |
| 585 | int |
| 586 | pckbcintr(void *vsc) |
| 587 | { |
| 588 | struct pckbc_softc *sc = (struct pckbc_softc *)vsc; |
| 589 | struct pckbc_internal *t = sc->id; |
| 590 | u_char stat; |
| 591 | pckbc_slot_t slot; |
| 592 | struct pckbc_slotdata *q; |
| 593 | int served = 0, data; |
| 594 | |
| 595 | for(;;) { |
| 596 | stat = bus_space_read_1(t->t_iot, t->t_ioh_c, 0); |
| 597 | if (!(stat & KBS_DIB)) |
| 598 | break; |
| 599 | |
| 600 | slot = (t->t_haveaux && (stat & 0x20)) ? |
| 601 | PCKBC_AUX_SLOT : PCKBC_KBD_SLOT; |
| 602 | q = t->t_slotdata[slot]; |
| 603 | |
| 604 | if (q != NULL && q->polling) |
| 605 | return 0; |
| 606 | |
| 607 | served = 1; |
| 608 | KBD_DELAY; |
| 609 | data = bus_space_read_1(t->t_iot, t->t_ioh_d, 0); |
| 610 | |
| 611 | rnd_add_uint32(&q->rnd_source, (stat<<8)|data); |
| 612 | |
| 613 | pckbportintr(t->t_pt, slot, data); |
| 614 | } |
| 615 | |
| 616 | return (served); |
| 617 | } |
| 618 | |
| 619 | int |
| 620 | pckbc_cnattach(bus_space_tag_t iot, bus_addr_t addr, |
| 621 | bus_size_t cmd_offset, pckbc_slot_t slot, int flags) |
| 622 | { |
| 623 | bus_space_handle_t ioh_d, ioh_c; |
| 624 | #ifdef PCKBC_CNATTACH_SELFTEST |
| 625 | int reply; |
| 626 | #endif |
| 627 | int res = 0; |
| 628 | |
| 629 | if (bus_space_map(iot, addr + KBDATAP, 1, 0, &ioh_d)) |
| 630 | return (ENXIO); |
| 631 | if (bus_space_map(iot, addr + cmd_offset, 1, 0, &ioh_c)) { |
| 632 | bus_space_unmap(iot, ioh_d, 1); |
| 633 | return (ENXIO); |
| 634 | } |
| 635 | |
| 636 | memset(&pckbc_consdata, 0, sizeof(pckbc_consdata)); |
| 637 | pckbc_consdata.t_iot = iot; |
| 638 | pckbc_consdata.t_ioh_d = ioh_d; |
| 639 | pckbc_consdata.t_ioh_c = ioh_c; |
| 640 | pckbc_consdata.t_addr = addr; |
| 641 | pckbc_consdata.t_flags = flags; |
| 642 | callout_init(&pckbc_consdata.t_cleanup, 0); |
| 643 | |
| 644 | /* flush */ |
| 645 | (void) pckbc_poll_data1(&pckbc_consdata, PCKBC_KBD_SLOT); |
| 646 | |
| 647 | #ifdef PCKBC_CNATTACH_SELFTEST |
| 648 | /* |
| 649 | * In some machines (e.g. netwinder) pckbc refuses to talk at |
| 650 | * all until we request a self-test. |
| 651 | */ |
| 652 | if (!pckbc_send_cmd(iot, ioh_c, KBC_SELFTEST)) { |
| 653 | printf("pckbc: unable to request selftest\n" ); |
| 654 | res = EIO; |
| 655 | goto out; |
| 656 | } |
| 657 | |
| 658 | reply = pckbc_poll_data1(&pckbc_consdata, PCKBC_KBD_SLOT); |
| 659 | if (reply != 0x55) { |
| 660 | printf("pckbc: selftest returned 0x%02x\n" , reply); |
| 661 | res = EIO; |
| 662 | goto out; |
| 663 | } |
| 664 | #endif /* PCKBC_CNATTACH_SELFTEST */ |
| 665 | |
| 666 | /* init cmd byte, enable ports */ |
| 667 | pckbc_consdata.t_cmdbyte = KC8_CPU; |
| 668 | if (!pckbc_put8042cmd(&pckbc_consdata)) { |
| 669 | printf("pckbc: cmd word write error\n" ); |
| 670 | res = EIO; |
| 671 | goto out; |
| 672 | } |
| 673 | |
| 674 | res = pckbport_cnattach(&pckbc_consdata, &pckbc_ops, slot); |
| 675 | |
| 676 | out: |
| 677 | if (res) { |
| 678 | bus_space_unmap(iot, pckbc_consdata.t_ioh_d, 1); |
| 679 | bus_space_unmap(iot, pckbc_consdata.t_ioh_c, 1); |
| 680 | } else { |
| 681 | pckbc_consdata.t_slotdata[slot] = &pckbc_cons_slotdata; |
| 682 | pckbc_init_slotdata(&pckbc_cons_slotdata); |
| 683 | pckbc_console = 1; |
| 684 | } |
| 685 | |
| 686 | return (res); |
| 687 | } |
| 688 | |
| 689 | bool |
| 690 | pckbc_resume(device_t dv, const pmf_qual_t *qual) |
| 691 | { |
| 692 | struct pckbc_softc *sc = device_private(dv); |
| 693 | struct pckbc_internal *t; |
| 694 | |
| 695 | t = sc->id; |
| 696 | (void)pckbc_poll_data1(t, PCKBC_KBD_SLOT); |
| 697 | if (!pckbc_send_cmd(t->t_iot, t->t_ioh_c, KBC_SELFTEST)) |
| 698 | return false; |
| 699 | (void)pckbc_poll_data1(t, PCKBC_KBD_SLOT); |
| 700 | (void)pckbc_put8042cmd(t); |
| 701 | pckbcintr(t->t_sc); |
| 702 | |
| 703 | return true; |
| 704 | } |
| 705 | |