| 1 |
/* |
| 2 |
* Copyright (C) 2003-2005 Anders Gavare. All rights reserved. |
| 3 |
* |
| 4 |
* Redistribution and use in source and binary forms, with or without |
| 5 |
* modification, are permitted provided that the following conditions are met: |
| 6 |
* |
| 7 |
* 1. Redistributions of source code must retain the above copyright |
| 8 |
* notice, this list of conditions and the following disclaimer. |
| 9 |
* 2. Redistributions in binary form must reproduce the above copyright |
| 10 |
* notice, this list of conditions and the following disclaimer in the |
| 11 |
* documentation and/or other materials provided with the distribution. |
| 12 |
* 3. The name of the author may not be used to endorse or promote products |
| 13 |
* derived from this software without specific prior written permission. |
| 14 |
* |
| 15 |
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| 16 |
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 17 |
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 18 |
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| 19 |
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 20 |
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 21 |
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 22 |
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 23 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 24 |
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 25 |
* SUCH DAMAGE. |
| 26 |
* |
| 27 |
* |
| 28 |
* $Id: dev_pckbc.c,v 1.45 2005/06/02 15:42:49 debug Exp $ |
| 29 |
* |
| 30 |
* Standard 8042 PC keyboard controller (and a 8242WB PS2 keyboard/mouse |
| 31 |
* controller), including the 8048 keyboard chip. |
| 32 |
* |
| 33 |
* |
| 34 |
* TODO: Finish the rewrite for 8242. |
| 35 |
*/ |
| 36 |
|
| 37 |
#include <stdio.h> |
| 38 |
#include <stdlib.h> |
| 39 |
#include <string.h> |
| 40 |
|
| 41 |
#include "console.h" |
| 42 |
#include "cpu.h" |
| 43 |
#include "devices.h" |
| 44 |
#include "machine.h" |
| 45 |
#include "memory.h" |
| 46 |
#include "misc.h" |
| 47 |
|
| 48 |
#include "kbdreg.h" |
| 49 |
|
| 50 |
|
| 51 |
/* #define PCKBC_DEBUG */ |
| 52 |
|
| 53 |
|
| 54 |
#define MAX_8042_QUEUELEN 256 |
| 55 |
|
| 56 |
#define PC_DATA 0 |
| 57 |
#define PC_CMD 0 |
| 58 |
#define PC_STATUS 1 |
| 59 |
|
| 60 |
#define PS2_TXBUF 0 |
| 61 |
#define PS2_RXBUF 1 |
| 62 |
#define PS2_CONTROL 2 |
| 63 |
#define PS2_STATUS 3 |
| 64 |
|
| 65 |
#define PS2 100 |
| 66 |
|
| 67 |
#define PCKBC_TICKSHIFT 14 |
| 68 |
|
| 69 |
struct pckbc_data { |
| 70 |
int console_handle; |
| 71 |
int in_use; |
| 72 |
|
| 73 |
int reg[DEV_PCKBC_LENGTH]; |
| 74 |
int keyboard_irqnr; |
| 75 |
int mouse_irqnr; |
| 76 |
int type; |
| 77 |
int pc_style_flag; |
| 78 |
|
| 79 |
/* TODO: one of these for each port? */ |
| 80 |
int clocksignal; |
| 81 |
int rx_int_enable; |
| 82 |
int tx_int_enable; |
| 83 |
|
| 84 |
int keyscanning_enabled; |
| 85 |
int state; |
| 86 |
int cmdbyte; |
| 87 |
int output_byte; |
| 88 |
int last_scancode; |
| 89 |
|
| 90 |
unsigned key_queue[2][MAX_8042_QUEUELEN]; |
| 91 |
int head[2], tail[2]; |
| 92 |
}; |
| 93 |
|
| 94 |
#define STATE_NORMAL 0 |
| 95 |
#define STATE_LDCMDBYTE 1 |
| 96 |
#define STATE_RDCMDBYTE 2 |
| 97 |
#define STATE_WAITING_FOR_TRANSLTABLE 3 |
| 98 |
#define STATE_LDOUTPUT 4 |
| 99 |
#define STATE_RDOUTPUT 5 |
| 100 |
|
| 101 |
|
| 102 |
/* |
| 103 |
* pckbc_add_code(): |
| 104 |
* |
| 105 |
* Adds a byte to the data queue. |
| 106 |
*/ |
| 107 |
void pckbc_add_code(struct pckbc_data *d, int code, int port) |
| 108 |
{ |
| 109 |
/* Add at the head, read at the tail: */ |
| 110 |
d->head[port] = (d->head[port]+1) % MAX_8042_QUEUELEN; |
| 111 |
if (d->head[port] == d->tail[port]) |
| 112 |
fatal("[ pckbc: queue overrun, port %i! ]\n", port); |
| 113 |
|
| 114 |
d->key_queue[port][d->head[port]] = code; |
| 115 |
} |
| 116 |
|
| 117 |
|
| 118 |
/* |
| 119 |
* pckbc_get_code(): |
| 120 |
* |
| 121 |
* Reads a byte from a data queue. |
| 122 |
*/ |
| 123 |
int pckbc_get_code(struct pckbc_data *d, int port) |
| 124 |
{ |
| 125 |
if (d->head[port] == d->tail[port]) |
| 126 |
fatal("[ pckbc: queue empty, port %i! ]\n", port); |
| 127 |
else |
| 128 |
d->tail[port] = (d->tail[port]+1) % MAX_8042_QUEUELEN; |
| 129 |
return d->key_queue[port][d->tail[port]]; |
| 130 |
} |
| 131 |
|
| 132 |
|
| 133 |
/* |
| 134 |
* ascii_to_scancodes(): |
| 135 |
* |
| 136 |
* Conversion from ASCII codes to default (US) keyboard scancodes. |
| 137 |
* (See http://www.win.tue.nl/~aeb/linux/kbd/scancodes-1.html) |
| 138 |
*/ |
| 139 |
static void ascii_to_pc_scancodes(int a, struct pckbc_data *d) |
| 140 |
{ |
| 141 |
int old_head; |
| 142 |
int p = 0; /* port */ |
| 143 |
int shift = 0, ctrl = 0; |
| 144 |
|
| 145 |
if (a >= 'A' && a <= 'Z') { a += 32; shift = 1; } |
| 146 |
if ((a >= 1 && a <= 26) && (a!='\n' && a!='\t' && a!='\b' && a!='\r')) |
| 147 |
{ a += 96; ctrl = 1; } |
| 148 |
|
| 149 |
if (shift) |
| 150 |
pckbc_add_code(d, 0x2a, p); |
| 151 |
else |
| 152 |
pckbc_add_code(d, 0x2a + 0x80, p); |
| 153 |
|
| 154 |
if (ctrl) |
| 155 |
pckbc_add_code(d, 0x1d, p); |
| 156 |
|
| 157 |
/* |
| 158 |
* Note: The ugly hack used to add release codes for all of these |
| 159 |
* keys is as follows: we remember how much of the kbd buf that |
| 160 |
* is in use here, before we add any scancode. After we've added |
| 161 |
* one or more scancodes (ie an optional shift + another key) |
| 162 |
* then we duplicate the last scancode | 0x80 _if_ the kbd buf |
| 163 |
* was altered. |
| 164 |
*/ |
| 165 |
|
| 166 |
old_head = d->head[p]; |
| 167 |
|
| 168 |
if (a==27) pckbc_add_code(d, 0x01, p); |
| 169 |
|
| 170 |
if (a=='1') pckbc_add_code(d, 0x02, p); |
| 171 |
if (a=='2') pckbc_add_code(d, 0x03, p); |
| 172 |
if (a=='3') pckbc_add_code(d, 0x04, p); |
| 173 |
if (a=='4') pckbc_add_code(d, 0x05, p); |
| 174 |
if (a=='5') pckbc_add_code(d, 0x06, p); |
| 175 |
if (a=='6') pckbc_add_code(d, 0x07, p); |
| 176 |
if (a=='7') pckbc_add_code(d, 0x08, p); |
| 177 |
if (a=='8') pckbc_add_code(d, 0x09, p); |
| 178 |
if (a=='9') pckbc_add_code(d, 0x0a, p); |
| 179 |
if (a=='0') pckbc_add_code(d, 0x0b, p); |
| 180 |
if (a=='-') pckbc_add_code(d, 0x0c, p); |
| 181 |
if (a=='=') pckbc_add_code(d, 0x0d, p); |
| 182 |
|
| 183 |
if (a=='!') { pckbc_add_code(d, 0x2a, p); |
| 184 |
pckbc_add_code(d, 0x02, p); } |
| 185 |
if (a=='@') { pckbc_add_code(d, 0x2a, p); |
| 186 |
pckbc_add_code(d, 0x03, p); } |
| 187 |
if (a=='#') { pckbc_add_code(d, 0x2a, p); |
| 188 |
pckbc_add_code(d, 0x04, p); } |
| 189 |
if (a=='$') { pckbc_add_code(d, 0x2a, p); |
| 190 |
pckbc_add_code(d, 0x05, p); } |
| 191 |
if (a=='%') { pckbc_add_code(d, 0x2a, p); |
| 192 |
pckbc_add_code(d, 0x06, p); } |
| 193 |
if (a=='^') { pckbc_add_code(d, 0x2a, p); |
| 194 |
pckbc_add_code(d, 0x07, p); } |
| 195 |
if (a=='&') { pckbc_add_code(d, 0x2a, p); |
| 196 |
pckbc_add_code(d, 0x08, p); } |
| 197 |
if (a=='*') { pckbc_add_code(d, 0x2a, p); |
| 198 |
pckbc_add_code(d, 0x09, p); } |
| 199 |
if (a=='(') { pckbc_add_code(d, 0x2a, p); |
| 200 |
pckbc_add_code(d, 0x0a, p); } |
| 201 |
if (a==')') { pckbc_add_code(d, 0x2a, p); |
| 202 |
pckbc_add_code(d, 0x0b, p); } |
| 203 |
if (a=='_') { pckbc_add_code(d, 0x2a, p); |
| 204 |
pckbc_add_code(d, 0x0c, p); } |
| 205 |
if (a=='+') { pckbc_add_code(d, 0x2a, p); |
| 206 |
pckbc_add_code(d, 0x0d, p); } |
| 207 |
|
| 208 |
if (a=='\b') pckbc_add_code(d, 0x0e, p); |
| 209 |
|
| 210 |
if (a=='\t') pckbc_add_code(d, 0x0f, p); |
| 211 |
if (a=='q') pckbc_add_code(d, 0x10, p); |
| 212 |
if (a=='w') pckbc_add_code(d, 0x11, p); |
| 213 |
if (a=='e') pckbc_add_code(d, 0x12, p); |
| 214 |
if (a=='r') pckbc_add_code(d, 0x13, p); |
| 215 |
if (a=='t') pckbc_add_code(d, 0x14, p); |
| 216 |
if (a=='y') pckbc_add_code(d, 0x15, p); |
| 217 |
if (a=='u') pckbc_add_code(d, 0x16, p); |
| 218 |
if (a=='i') pckbc_add_code(d, 0x17, p); |
| 219 |
if (a=='o') pckbc_add_code(d, 0x18, p); |
| 220 |
if (a=='p') pckbc_add_code(d, 0x19, p); |
| 221 |
|
| 222 |
if (a=='[') pckbc_add_code(d, 0x1a, p); |
| 223 |
if (a=='{') { pckbc_add_code(d, 0x2a, p); |
| 224 |
pckbc_add_code(d, 0x1a, p); } |
| 225 |
if (a==']') pckbc_add_code(d, 0x1b, p); |
| 226 |
if (a=='}') { pckbc_add_code(d, 0x2a, p); |
| 227 |
pckbc_add_code(d, 0x1b, p); } |
| 228 |
|
| 229 |
if (a=='\n' || a=='\r') pckbc_add_code(d, 0x1c, p); |
| 230 |
|
| 231 |
if (a=='a') pckbc_add_code(d, 0x1e, p); |
| 232 |
if (a=='s') pckbc_add_code(d, 0x1f, p); |
| 233 |
if (a=='d') pckbc_add_code(d, 0x20, p); |
| 234 |
if (a=='f') pckbc_add_code(d, 0x21, p); |
| 235 |
if (a=='g') pckbc_add_code(d, 0x22, p); |
| 236 |
if (a=='h') pckbc_add_code(d, 0x23, p); |
| 237 |
if (a=='j') pckbc_add_code(d, 0x24, p); |
| 238 |
if (a=='k') pckbc_add_code(d, 0x25, p); |
| 239 |
if (a=='l') pckbc_add_code(d, 0x26, p); |
| 240 |
|
| 241 |
if (a==';') pckbc_add_code(d, 0x27, p); |
| 242 |
if (a==':') { pckbc_add_code(d, 0x2a, p); |
| 243 |
pckbc_add_code(d, 0x27, p); } |
| 244 |
if (a=='\'') pckbc_add_code(d, 0x28, p); |
| 245 |
if (a=='"') { pckbc_add_code(d, 0x2a, p); |
| 246 |
pckbc_add_code(d, 0x28, p); } |
| 247 |
if (a=='~') pckbc_add_code(d, 0x29, p); |
| 248 |
|
| 249 |
if (a=='\\') pckbc_add_code(d, 0x2b, p); |
| 250 |
if (a=='|') { pckbc_add_code(d, 0x2a, p); |
| 251 |
pckbc_add_code(d, 0x2b, p); } |
| 252 |
|
| 253 |
if (a=='z') pckbc_add_code(d, 0x2c, p); |
| 254 |
if (a=='x') pckbc_add_code(d, 0x2d, p); |
| 255 |
if (a=='c') pckbc_add_code(d, 0x2e, p); |
| 256 |
if (a=='v') pckbc_add_code(d, 0x2f, p); |
| 257 |
if (a=='b') pckbc_add_code(d, 0x30, p); |
| 258 |
if (a=='n') pckbc_add_code(d, 0x31, p); |
| 259 |
if (a=='m') pckbc_add_code(d, 0x32, p); |
| 260 |
|
| 261 |
if (a==',') pckbc_add_code(d, 0x33, p); |
| 262 |
if (a=='<') { pckbc_add_code(d, 0x2a, p); |
| 263 |
pckbc_add_code(d, 0x33, p); } |
| 264 |
if (a=='.') pckbc_add_code(d, 0x34, p); |
| 265 |
if (a=='>') { pckbc_add_code(d, 0x2a, p); |
| 266 |
pckbc_add_code(d, 0x34, p); } |
| 267 |
if (a=='/') pckbc_add_code(d, 0x35, p); |
| 268 |
if (a=='?') { pckbc_add_code(d, 0x2a, p); |
| 269 |
pckbc_add_code(d, 0x35, p); } |
| 270 |
|
| 271 |
if (a==' ') pckbc_add_code(d, 0x39, p); |
| 272 |
|
| 273 |
/* Add release code, if a key was pressed: */ |
| 274 |
if (d->head[p] != old_head) { |
| 275 |
int code = d->key_queue[p][d->head[p]] | 0x80; |
| 276 |
pckbc_add_code(d, code, p); |
| 277 |
} |
| 278 |
|
| 279 |
/* Release ctrl: */ |
| 280 |
if (ctrl) |
| 281 |
pckbc_add_code(d, 0x1d + 0x80, p); |
| 282 |
} |
| 283 |
|
| 284 |
|
| 285 |
/* |
| 286 |
* dev_pckbc_tick(): |
| 287 |
*/ |
| 288 |
void dev_pckbc_tick(struct cpu *cpu, void *extra) |
| 289 |
{ |
| 290 |
struct pckbc_data *d = extra; |
| 291 |
int port_nr, ch, ints_enabled; |
| 292 |
|
| 293 |
if (d->in_use && console_charavail(d->console_handle)) { |
| 294 |
ch = console_readchar(d->console_handle); |
| 295 |
if (ch >= 0) |
| 296 |
ascii_to_pc_scancodes(ch, d); |
| 297 |
} |
| 298 |
|
| 299 |
ints_enabled = d->rx_int_enable; |
| 300 |
|
| 301 |
/* TODO: mouse movements? */ |
| 302 |
|
| 303 |
if (d->cmdbyte & KC8_KDISABLE) |
| 304 |
ints_enabled = 0; |
| 305 |
|
| 306 |
for (port_nr=0; port_nr<2; port_nr++) { |
| 307 |
/* Cause receive interrupt, if there's something in the |
| 308 |
receive buffer: (Otherwise deassert the interrupt.) */ |
| 309 |
if (d->head[port_nr] != d->tail[port_nr] && ints_enabled) { |
| 310 |
cpu_interrupt(cpu, port_nr==0? d->keyboard_irqnr |
| 311 |
: d->mouse_irqnr); |
| 312 |
} else { |
| 313 |
cpu_interrupt_ack(cpu, port_nr==0? d->keyboard_irqnr |
| 314 |
: d->mouse_irqnr); |
| 315 |
} |
| 316 |
} |
| 317 |
} |
| 318 |
|
| 319 |
|
| 320 |
/* |
| 321 |
* dev_pckbc_command(): |
| 322 |
* |
| 323 |
* Handle commands to the 8048 in the emulated keyboard. |
| 324 |
*/ |
| 325 |
static void dev_pckbc_command(struct pckbc_data *d, int port_nr) |
| 326 |
{ |
| 327 |
int cmd = d->reg[PC_CMD]; |
| 328 |
|
| 329 |
if (d->type == PCKBC_8242) |
| 330 |
cmd = d->reg[PS2_TXBUF]; |
| 331 |
|
| 332 |
if (d->state == STATE_WAITING_FOR_TRANSLTABLE) { |
| 333 |
debug("[ pckbc: switching to translation table 0x%02x ]\n", |
| 334 |
cmd); |
| 335 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 336 |
d->state = STATE_NORMAL; |
| 337 |
return; |
| 338 |
} |
| 339 |
|
| 340 |
switch (cmd) { |
| 341 |
case 0x00: |
| 342 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 343 |
break; |
| 344 |
case KBC_MODEIND: /* Set LEDs */ |
| 345 |
/* Just ACK, no LEDs are actually set. */ |
| 346 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 347 |
break; |
| 348 |
case KBC_SETTABLE: |
| 349 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 350 |
d->state = STATE_WAITING_FOR_TRANSLTABLE; |
| 351 |
break; |
| 352 |
case KBC_ENABLE: |
| 353 |
d->keyscanning_enabled = 1; |
| 354 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 355 |
break; |
| 356 |
case KBC_DISABLE: |
| 357 |
d->keyscanning_enabled = 0; |
| 358 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 359 |
break; |
| 360 |
case KBC_SETDEFAULT: |
| 361 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 362 |
break; |
| 363 |
case KBC_RESET: |
| 364 |
pckbc_add_code(d, KBR_ACK, port_nr); |
| 365 |
pckbc_add_code(d, KBR_RSTDONE, port_nr); |
| 366 |
break; |
| 367 |
default: |
| 368 |
fatal("[ pckbc: UNIMPLEMENTED 8048 command 0x%02x ]\n", cmd); |
| 369 |
} |
| 370 |
} |
| 371 |
|
| 372 |
|
| 373 |
/* |
| 374 |
* dev_pckbc_access(): |
| 375 |
*/ |
| 376 |
int dev_pckbc_access(struct cpu *cpu, struct memory *mem, |
| 377 |
uint64_t relative_addr, unsigned char *data, size_t len, |
| 378 |
int writeflag, void *extra) |
| 379 |
{ |
| 380 |
uint64_t idata = 0, odata = 0; |
| 381 |
int i, port_nr = 0; |
| 382 |
struct pckbc_data *d = extra; |
| 383 |
|
| 384 |
idata = memory_readmax64(cpu, data, len); |
| 385 |
|
| 386 |
#ifdef PCKBC_DEBUG |
| 387 |
if (writeflag == MEM_WRITE) |
| 388 |
fatal("[ pckbc: write to addr 0x%x: 0x%x ]\n", |
| 389 |
(int)relative_addr, (int)idata); |
| 390 |
else |
| 391 |
fatal("[ pckbc: read from addr 0x%x ]\n", |
| 392 |
(int)relative_addr); |
| 393 |
#endif |
| 394 |
|
| 395 |
/* For JAZZ-based machines: */ |
| 396 |
if (relative_addr >= 0x60) { |
| 397 |
relative_addr -= 0x60; |
| 398 |
if (relative_addr != 0) |
| 399 |
relative_addr = 1; |
| 400 |
} else if (d->type == PCKBC_8242) { |
| 401 |
/* 8242 PS2-style: */ |
| 402 |
/* when using 8-byte alignment... */ |
| 403 |
relative_addr /= sizeof(uint64_t); |
| 404 |
/* port_nr = 0 for keyboard, 1 for mouse */ |
| 405 |
port_nr = (relative_addr >> 2); |
| 406 |
relative_addr &= 3; |
| 407 |
relative_addr += PS2; |
| 408 |
} else if (d->pc_style_flag) { |
| 409 |
/* PC-style: */ |
| 410 |
if (relative_addr != 0 && relative_addr != 4) { |
| 411 |
/* TODO (port 0x61) */ |
| 412 |
odata = 0x21; |
| 413 |
{ |
| 414 |
static int x = 0; |
| 415 |
x++; |
| 416 |
if (x&1) |
| 417 |
odata ^= 0x10; |
| 418 |
} |
| 419 |
if (writeflag == MEM_READ) |
| 420 |
memory_writemax64(cpu, data, len, odata); |
| 421 |
return 0; |
| 422 |
} |
| 423 |
if (relative_addr != 0) |
| 424 |
relative_addr = 1; |
| 425 |
} else { |
| 426 |
/* Others... Non-Jazz ARC-based machines etc. */ |
| 427 |
if (relative_addr != 0) |
| 428 |
relative_addr = 1; |
| 429 |
} |
| 430 |
|
| 431 |
switch (relative_addr) { |
| 432 |
|
| 433 |
/* |
| 434 |
* 8042 (PC): |
| 435 |
*/ |
| 436 |
|
| 437 |
case 0: /* data */ |
| 438 |
if (writeflag==MEM_READ) { |
| 439 |
switch (d->state) { |
| 440 |
case STATE_RDCMDBYTE: |
| 441 |
odata = d->cmdbyte; |
| 442 |
d->state = STATE_NORMAL; |
| 443 |
break; |
| 444 |
case STATE_RDOUTPUT: |
| 445 |
odata = d->output_byte; |
| 446 |
d->state = STATE_NORMAL; |
| 447 |
break; |
| 448 |
default:if (d->head[0] != d->tail[0]) { |
| 449 |
odata = pckbc_get_code(d, 0); |
| 450 |
d->last_scancode = odata; |
| 451 |
} else { |
| 452 |
odata = d->last_scancode; |
| 453 |
d->last_scancode |= 0x80; |
| 454 |
} |
| 455 |
} |
| 456 |
/* debug("[ pckbc: read from DATA: 0x%02x ]\n", |
| 457 |
odata); */ |
| 458 |
} else { |
| 459 |
debug("[ pckbc: write to DATA:"); |
| 460 |
for (i=0; i<len; i++) |
| 461 |
debug(" %02x", data[i]); |
| 462 |
debug(" ]\n"); |
| 463 |
|
| 464 |
switch (d->state) { |
| 465 |
case STATE_LDCMDBYTE: |
| 466 |
d->cmdbyte = idata; |
| 467 |
d->rx_int_enable = d->cmdbyte & |
| 468 |
(KC8_KENABLE | KC8_MENABLE) ? 1 : 0; |
| 469 |
d->state = STATE_NORMAL; |
| 470 |
break; |
| 471 |
case STATE_LDOUTPUT: |
| 472 |
d->output_byte = idata; |
| 473 |
d->state = STATE_NORMAL; |
| 474 |
break; |
| 475 |
default:d->reg[relative_addr] = idata; |
| 476 |
dev_pckbc_command(d, port_nr); |
| 477 |
} |
| 478 |
} |
| 479 |
break; |
| 480 |
case 1: /* control */ |
| 481 |
if (writeflag==MEM_READ) { |
| 482 |
dev_pckbc_tick(cpu, d); |
| 483 |
|
| 484 |
odata = 0; |
| 485 |
|
| 486 |
/* "Data in buffer" bit */ |
| 487 |
if (d->head[0] != d->tail[0] || |
| 488 |
d->state == STATE_RDCMDBYTE || |
| 489 |
d->state == STATE_RDOUTPUT) |
| 490 |
odata |= KBS_DIB; |
| 491 |
|
| 492 |
if (d->state == STATE_RDCMDBYTE) |
| 493 |
odata |= KBS_OCMD; |
| 494 |
|
| 495 |
odata |= KBS_NOSEC; |
| 496 |
/* debug("[ pckbc: read from CTL status port: " |
| 497 |
"0x%02x ]\n", (int)odata); */ |
| 498 |
} else { |
| 499 |
debug("[ pckbc: write to CTL:"); |
| 500 |
for (i=0; i<len; i++) |
| 501 |
debug(" %02x", data[i]); |
| 502 |
debug(" ]\n"); |
| 503 |
d->reg[relative_addr] = idata; |
| 504 |
|
| 505 |
switch (idata) { |
| 506 |
case K_RDCMDBYTE: |
| 507 |
d->state = STATE_RDCMDBYTE; |
| 508 |
break; |
| 509 |
case K_LDCMDBYTE: |
| 510 |
d->state = STATE_LDCMDBYTE; |
| 511 |
break; |
| 512 |
case 0xa7: |
| 513 |
d->cmdbyte |= KC8_MDISABLE; |
| 514 |
break; |
| 515 |
case 0xa8: |
| 516 |
d->cmdbyte &= ~KC8_MDISABLE; |
| 517 |
break; |
| 518 |
case 0xa9: /* test auxiliary port */ |
| 519 |
debug("[ pckbc: CONTROL 0xa9, TODO ]\n"); |
| 520 |
break; |
| 521 |
case 0xaa: /* keyboard self-test */ |
| 522 |
pckbc_add_code(d, 0x55, port_nr); |
| 523 |
break; |
| 524 |
case 0xad: |
| 525 |
d->cmdbyte |= KC8_KDISABLE; |
| 526 |
break; |
| 527 |
case 0xae: |
| 528 |
d->cmdbyte &= ~KC8_KDISABLE; |
| 529 |
break; |
| 530 |
case 0xd0: |
| 531 |
d->state = STATE_RDOUTPUT; |
| 532 |
break; |
| 533 |
case 0xd1: |
| 534 |
d->state = STATE_LDOUTPUT; |
| 535 |
break; |
| 536 |
case 0xd4: /* write to auxiliary port */ |
| 537 |
debug("[ pckbc: CONTROL 0xd4, TODO ]\n"); |
| 538 |
break; |
| 539 |
default: |
| 540 |
fatal("[ pckbc: unknown CONTROL 0x%x ]\n", |
| 541 |
idata); |
| 542 |
d->state = STATE_NORMAL; |
| 543 |
} |
| 544 |
} |
| 545 |
break; |
| 546 |
|
| 547 |
/* |
| 548 |
* 8242 (PS2): |
| 549 |
*/ |
| 550 |
|
| 551 |
/* |
| 552 |
* BIG TODO: The following should be rewritten to use dev_pckbc_command() |
| 553 |
* etc, like the 8042 code above does. |
| 554 |
*/ |
| 555 |
|
| 556 |
case PS2 + PS2_TXBUF: |
| 557 |
if (writeflag==MEM_READ) { |
| 558 |
odata = random() & 0xff; |
| 559 |
debug("[ pckbc: read from port %i, PS2_TXBUF: " |
| 560 |
"0x%x ]\n", port_nr, (int)odata); |
| 561 |
} else { |
| 562 |
debug("[ pckbc: write to port %i, PS2_TXBUF: " |
| 563 |
"0x%llx ]\n", port_nr, (long long)idata); |
| 564 |
|
| 565 |
/* Handle keyboard commands: */ |
| 566 |
switch (idata) { |
| 567 |
/* These are incorrect, the second byte of |
| 568 |
commands should be treated better: */ |
| 569 |
case 0x00: /* second byte of 0xed, |
| 570 |
SGI-IP32's prom */ |
| 571 |
pckbc_add_code(d, 0x03, port_nr);/* ack (?) */ |
| 572 |
break; |
| 573 |
case 0x14: /* second byte of 0xfc, |
| 574 |
SGI-IP32's prom */ |
| 575 |
case 0x28: /* second byte of 0xf3, |
| 576 |
SGI-IP32's prom */ |
| 577 |
case 0x76: /* third byte of 0xfc, |
| 578 |
SGI-IP32's prom */ |
| 579 |
case 0x03: /* second byte of |
| 580 |
ATKBD_CMD_GSCANSET (?) */ |
| 581 |
case 0x04: |
| 582 |
pckbc_add_code(d, 0x03, port_nr);/* ? */ |
| 583 |
break; |
| 584 |
|
| 585 |
/* Command bytes: */ |
| 586 |
case 0xf0: /* ATKBD_CMD_GSCANSET (?) */ |
| 587 |
pckbc_add_code(d, 0x03, port_nr);/* ? */ |
| 588 |
break; |
| 589 |
case 0xf2: /* Get keyboard ID */ |
| 590 |
/* The keyboard should generate 2 |
| 591 |
status bytes. */ |
| 592 |
pckbc_add_code(d, 0xab, port_nr); |
| 593 |
pckbc_add_code(d, 0x83, port_nr); |
| 594 |
break; |
| 595 |
case 0xed: /* "ATKBD_CMD_SETLEDS", |
| 596 |
takes 1 byte arg */ |
| 597 |
case 0xf3: /* "PSMOUSE_CMD_SETRATE", |
| 598 |
takes 1 byte arg */ |
| 599 |
case 0xf4: /* "ATKBD_CMD_ENABLE" (or |
| 600 |
PSMOUSE_CMD_ENABLE), no args */ |
| 601 |
case 0xf5: /* "ATKBD_CMD_RESET_DIS" (keyboard, |
| 602 |
according to Linux sources) */ |
| 603 |
case 0xf6: /* "PSMOUSE_CMD_RESET_DIS" (mouse, |
| 604 |
according to Linux sources) */ |
| 605 |
/* TODO: what does this do? */ |
| 606 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
| 607 |
break; |
| 608 |
case 0xfa: /* "ATKBD_CMD_SETALL_MBR" (linux) */ |
| 609 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
| 610 |
break; |
| 611 |
case 0xfc: /* ? */ |
| 612 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
| 613 |
break; |
| 614 |
case 0xff: /* Keyboard reset */ |
| 615 |
/* The keyboard should generate 2 |
| 616 |
status bytes. */ |
| 617 |
pckbc_add_code(d, 0xfa, port_nr);/* ack (?) */ |
| 618 |
pckbc_add_code(d, 0xaa, port_nr); |
| 619 |
/* battery ok (?) */ |
| 620 |
break; |
| 621 |
default: |
| 622 |
debug("[ pckbc: UNIMPLEMENTED keyboard command" |
| 623 |
" 0x%02x (port %i) ]\n", (int)idata, |
| 624 |
port_nr); |
| 625 |
} |
| 626 |
} |
| 627 |
break; |
| 628 |
|
| 629 |
case PS2 + PS2_RXBUF: |
| 630 |
if (writeflag==MEM_READ) { |
| 631 |
/* TODO: What should be returned if no data |
| 632 |
is available? */ |
| 633 |
odata = random() & 0xff; |
| 634 |
if (d->head[port_nr] != d->tail[port_nr]) |
| 635 |
odata = pckbc_get_code(d, port_nr); |
| 636 |
debug("[ pckbc: read from port %i, PS2_RXBUF: " |
| 637 |
"0x%02x ]\n", port_nr, (int)odata); |
| 638 |
} else { |
| 639 |
debug("[ pckbc: write to port %i, PS2_RXBUF: " |
| 640 |
"0x%llx ]\n", port_nr, (long long)idata); |
| 641 |
} |
| 642 |
break; |
| 643 |
|
| 644 |
case PS2 + PS2_CONTROL: |
| 645 |
if (writeflag==MEM_READ) { |
| 646 |
debug("[ pckbc: read from port %i, PS2_CONTROL" |
| 647 |
" ]\n", port_nr); |
| 648 |
} else { |
| 649 |
debug("[ pckbc: write to port %i, PS2_CONTROL:" |
| 650 |
" 0x%llx ]\n", port_nr, (long long)idata); |
| 651 |
d->clocksignal = (idata & 0x10) ? 1 : 0; |
| 652 |
d->rx_int_enable = (idata & 0x08) ? 1 : 0; |
| 653 |
d->tx_int_enable = (idata & 0x04) ? 1 : 0; |
| 654 |
} |
| 655 |
break; |
| 656 |
|
| 657 |
case PS2 + PS2_STATUS: |
| 658 |
if (writeflag==MEM_READ) { |
| 659 |
/* 0x08 = transmit buffer empty */ |
| 660 |
odata = d->clocksignal + 0x08; |
| 661 |
|
| 662 |
if (d->head[port_nr] != d->tail[port_nr]) { |
| 663 |
/* 0x10 = receicer data available (?) */ |
| 664 |
odata |= 0x10; |
| 665 |
} |
| 666 |
|
| 667 |
debug("[ pckbc: read from port %i, PS2_STATUS: " |
| 668 |
"0x%llx ]\n", port_nr, (long long)odata); |
| 669 |
} else { |
| 670 |
debug("[ pckbc: write to port %i, PS2_STATUS: " |
| 671 |
"0x%llx ]\n", port_nr, (long long)idata); |
| 672 |
} |
| 673 |
break; |
| 674 |
|
| 675 |
default: |
| 676 |
if (writeflag==MEM_READ) { |
| 677 |
debug("[ pckbc: read from unimplemented reg %i ]\n", |
| 678 |
(int)relative_addr); |
| 679 |
odata = d->reg[relative_addr]; |
| 680 |
} else { |
| 681 |
debug("[ pckbc: write to unimplemented reg %i:", |
| 682 |
(int)relative_addr); |
| 683 |
for (i=0; i<len; i++) |
| 684 |
debug(" %02x", data[i]); |
| 685 |
debug(" ]\n"); |
| 686 |
d->reg[relative_addr] = idata; |
| 687 |
} |
| 688 |
} |
| 689 |
|
| 690 |
if (writeflag == MEM_READ) |
| 691 |
memory_writemax64(cpu, data, len, odata); |
| 692 |
|
| 693 |
dev_pckbc_tick(cpu, d); |
| 694 |
|
| 695 |
return 1; |
| 696 |
} |
| 697 |
|
| 698 |
|
| 699 |
/* |
| 700 |
* dev_pckbc_init(): |
| 701 |
* |
| 702 |
* Type should be PCKBC_8042 or PCKBC_8242. |
| 703 |
*/ |
| 704 |
int dev_pckbc_init(struct machine *machine, struct memory *mem, |
| 705 |
uint64_t baseaddr, int type, int keyboard_irqnr, int mouse_irqnr, |
| 706 |
int in_use, int pc_style_flag) |
| 707 |
{ |
| 708 |
struct pckbc_data *d; |
| 709 |
int len = DEV_PCKBC_LENGTH; |
| 710 |
|
| 711 |
d = malloc(sizeof(struct pckbc_data)); |
| 712 |
if (d == NULL) { |
| 713 |
fprintf(stderr, "out of memory\n"); |
| 714 |
exit(1); |
| 715 |
} |
| 716 |
memset(d, 0, sizeof(struct pckbc_data)); |
| 717 |
|
| 718 |
if (type == PCKBC_JAZZ) { |
| 719 |
type = PCKBC_8042; |
| 720 |
len = DEV_PCKBC_LENGTH + 0x60; |
| 721 |
} |
| 722 |
|
| 723 |
d->type = type; |
| 724 |
d->keyboard_irqnr = keyboard_irqnr; |
| 725 |
d->mouse_irqnr = mouse_irqnr; |
| 726 |
d->in_use = in_use; |
| 727 |
d->pc_style_flag = pc_style_flag; |
| 728 |
d->console_handle = console_start_slave_inputonly(machine, "pckbc"); |
| 729 |
d->rx_int_enable = 1; |
| 730 |
d->output_byte = 0x02; /* A20 enable on PCs */ |
| 731 |
|
| 732 |
memory_device_register(mem, "pckbc", baseaddr, |
| 733 |
len, dev_pckbc_access, d, MEM_DEFAULT, NULL); |
| 734 |
machine_add_tickfunction(machine, dev_pckbc_tick, d, PCKBC_TICKSHIFT); |
| 735 |
|
| 736 |
return d->console_handle; |
| 737 |
} |
| 738 |
|
Parent Directory
| 
Revision Log