| 1 | /* |
| 2 | * Copyright (c) 1992, 1993, 1996 |
| 3 | * Berkeley Software Design, Inc. All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. All advertising materials mentioning features or use of this software |
| 14 | * must display the following acknowledgement: |
| 15 | * This product includes software developed by Berkeley Software |
| 16 | * Design, Inc. |
| 17 | * |
| 18 | * THIS SOFTWARE IS PROVIDED BY Berkeley Software Design, Inc. ``AS IS'' AND |
| 19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 21 | * ARE DISCLAIMED. IN NO EVENT SHALL Berkeley Software Design, Inc. BE LIABLE |
| 22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 28 | * SUCH DAMAGE. |
| 29 | * |
| 30 | * BSDI port.c,v 2.2 1996/04/08 19:33:03 bostic Exp |
| 31 | */ |
| 32 | |
| 33 | #include <sys/cdefs.h> |
| 34 | __FBSDID("$FreeBSD: src/usr.bin/doscmd/port.c,v 1.5.2.1 2002/04/25 11:04:51 tg Exp $"); |
| 35 | |
| 36 | #include <sys/ioctl.h> |
| 37 | #include <machine/sysarch.h> |
| 38 | |
| 39 | #include "doscmd.h" |
| 40 | #include "tty.h" |
| 41 | |
| 42 | #define MINPORT 0x000 |
| 43 | #define MAXPORT_MASK (MAXPORT - 1) |
| 44 | |
| 45 | #define in(port) \ |
| 46 | ({ \ |
| 47 | register int _inb_result; \ |
| 48 | \ |
| 49 | asm volatile ("xorl %%eax,%%eax; inb %%dx,%%al" : \ |
| 50 | "=a" (_inb_result) : "d" (port)); \ |
| 51 | _inb_result; \ |
| 52 | }) |
| 53 | |
| 54 | #define out(port, data) \ |
| 55 | asm volatile ("outb %%al,%%dx" : : "a" (data), "d" (port)) |
| 56 | |
| 57 | FILE *iolog = 0; |
| 58 | u_long ioports[MAXPORT/32]; |
| 59 | #ifdef __FreeBSD__ |
| 60 | static void |
| 61 | iomap(int port, int cnt) |
| 62 | { |
| 63 | if (port + cnt >= MAXPORT) { |
| 64 | errno = ERANGE; |
| 65 | goto bad; |
| 66 | } |
| 67 | if (i386_set_ioperm(port, cnt, 1) < 0) { |
| 68 | bad: |
| 69 | perror("iomap"); |
| 70 | quit(1); |
| 71 | } |
| 72 | } |
| 73 | |
| 74 | static void |
| 75 | iounmap(int port, int cnt) |
| 76 | { |
| 77 | if (port + cnt >= MAXPORT) { |
| 78 | errno = ERANGE; |
| 79 | goto bad; |
| 80 | } |
| 81 | if (i386_set_ioperm(port, cnt, 0) < 0) { |
| 82 | bad: |
| 83 | perror("iounmap"); |
| 84 | quit(1); |
| 85 | } |
| 86 | } |
| 87 | #else |
| 88 | static void |
| 89 | iomap(int port, int cnt) |
| 90 | { |
| 91 | |
| 92 | if (port + cnt >= MAXPORT) { |
| 93 | errno = ERANGE; |
| 94 | goto bad; |
| 95 | } |
| 96 | while (cnt--) { |
| 97 | ioports[port/32] |= (1 << (port%32)); |
| 98 | port++; |
| 99 | } |
| 100 | if (i386_set_ioperm(ioports) < 0) { |
| 101 | bad: |
| 102 | perror("iomap"); |
| 103 | quit(1); |
| 104 | } |
| 105 | } |
| 106 | |
| 107 | static void |
| 108 | iounmap(int port, int cnt) |
| 109 | { |
| 110 | |
| 111 | if (port + cnt >= MAXPORT) { |
| 112 | errno = ERANGE; |
| 113 | goto bad; |
| 114 | } |
| 115 | while (cnt--) { |
| 116 | ioports[port/32] &= ~(1 << (port%32)); |
| 117 | port++; |
| 118 | } |
| 119 | if (i386_set_ioperm(ioports) < 0) { |
| 120 | bad: |
| 121 | perror("iounmap"); |
| 122 | quit(1); |
| 123 | } |
| 124 | } |
| 125 | #endif |
| 126 | void |
| 127 | outb_traceport(int port, unsigned char byte) |
| 128 | { |
| 129 | /* |
| 130 | if (!iolog && !(iolog = fopen("/tmp/iolog", "a"))) |
| 131 | iolog = stderr; |
| 132 | |
| 133 | fprintf(iolog, "0x%03X -> %02X\n", port, byte); |
| 134 | */ |
| 135 | |
| 136 | iomap(port, 1); |
| 137 | out(port, byte); |
| 138 | iounmap(port, 1); |
| 139 | } |
| 140 | |
| 141 | unsigned char |
| 142 | inb_traceport(int port) |
| 143 | { |
| 144 | unsigned char byte; |
| 145 | |
| 146 | /* |
| 147 | if (!iolog && !(iolog = fopen("/tmp/iolog", "a"))) |
| 148 | iolog = stderr; |
| 149 | */ |
| 150 | |
| 151 | iomap(port, 1); |
| 152 | byte = in(port); |
| 153 | iounmap(port, 1); |
| 154 | |
| 155 | /* |
| 156 | fprintf(iolog, "0x%03X <- %02X\n", port, byte); |
| 157 | fflush(iolog); |
| 158 | */ |
| 159 | return(byte); |
| 160 | } |
| 161 | |
| 162 | /* |
| 163 | * Real input/output to (hopefully) iomapped port |
| 164 | */ |
| 165 | void |
| 166 | outb_port(int port, unsigned char byte) |
| 167 | { |
| 168 | out(port, byte); |
| 169 | } |
| 170 | |
| 171 | unsigned char |
| 172 | inb_port(int port) |
| 173 | { |
| 174 | return in(port); |
| 175 | } |
| 176 | |
| 177 | /* |
| 178 | * Fake input/output ports |
| 179 | */ |
| 180 | |
| 181 | static void |
| 182 | outb_nullport(int port __unused, unsigned char byte __unused) |
| 183 | { |
| 184 | /* |
| 185 | debug(D_PORT, "outb_nullport called for port 0x%03X = 0x%02X.\n", |
| 186 | port, byte); |
| 187 | */ |
| 188 | } |
| 189 | |
| 190 | static unsigned char |
| 191 | inb_nullport(int port __unused) |
| 192 | { |
| 193 | /* |
| 194 | debug(D_PORT, "inb_nullport called for port 0x%03X.\n", port); |
| 195 | */ |
| 196 | return(0xff); |
| 197 | } |
| 198 | |
| 199 | /* |
| 200 | * configuration table for ports' emulators |
| 201 | */ |
| 202 | |
| 203 | struct portsw { |
| 204 | unsigned char (*p_inb)(int port); |
| 205 | void (*p_outb)(int port, unsigned char byte); |
| 206 | } portsw[MAXPORT]; |
| 207 | |
| 208 | void |
| 209 | init_io_port_handlers(void) |
| 210 | { |
| 211 | int i; |
| 212 | |
| 213 | for (i = 0; i < MAXPORT; i++) { |
| 214 | if (portsw[i].p_inb == 0) |
| 215 | portsw[i].p_inb = inb_nullport; |
| 216 | if (portsw[i].p_outb == 0) |
| 217 | portsw[i].p_outb = outb_nullport; |
| 218 | } |
| 219 | |
| 220 | } |
| 221 | |
| 222 | void |
| 223 | define_input_port_handler(int port, unsigned char (*p_inb)(int port)) |
| 224 | { |
| 225 | if ((port >= MINPORT) && (port < MAXPORT)) { |
| 226 | portsw[port].p_inb = p_inb; |
| 227 | } else |
| 228 | fprintf (stderr, "attempt to handle invalid port 0x%04x", port); |
| 229 | } |
| 230 | |
| 231 | void |
| 232 | define_output_port_handler(int port, void (*p_outb)(int port, unsigned char byte)) |
| 233 | { |
| 234 | if ((port >= MINPORT) && (port < MAXPORT)) { |
| 235 | portsw[port].p_outb = p_outb; |
| 236 | } else |
| 237 | fprintf (stderr, "attempt to handle invalid port 0x%04x", port); |
| 238 | } |
| 239 | |
| 240 | |
| 241 | void |
| 242 | inb(regcontext_t *REGS, int port) |
| 243 | { |
| 244 | unsigned char (*in_handler)(int); |
| 245 | |
| 246 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 247 | in_handler = portsw[port].p_inb; |
| 248 | else |
| 249 | in_handler = inb_nullport; |
| 250 | R_AL = (*in_handler)(port); |
| 251 | debug(D_PORT, "IN on port %02x -> %02x\n", port, R_AL); |
| 252 | } |
| 253 | |
| 254 | void |
| 255 | insb(regcontext_t *REGS, int port) |
| 256 | { |
| 257 | unsigned char (*in_handler)(int); |
| 258 | unsigned char data; |
| 259 | |
| 260 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 261 | in_handler = portsw[port].p_inb; |
| 262 | else |
| 263 | in_handler = inb_nullport; |
| 264 | data = (*in_handler)(port); |
| 265 | *(u_char *)MAKEPTR(R_ES, R_DI) = data; |
| 266 | debug(D_PORT, "INS on port %02x -> %02x\n", port, data); |
| 267 | |
| 268 | if (R_FLAGS & PSL_D) |
| 269 | R_DI--; |
| 270 | else |
| 271 | R_DI++; |
| 272 | } |
| 273 | |
| 274 | void |
| 275 | inx(regcontext_t *REGS, int port) |
| 276 | { |
| 277 | unsigned char (*in_handler)(int); |
| 278 | |
| 279 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 280 | in_handler = portsw[port].p_inb; |
| 281 | else |
| 282 | in_handler = inb_nullport; |
| 283 | R_AL = (*in_handler)(port); |
| 284 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 285 | in_handler = portsw[port + 1].p_inb; |
| 286 | else |
| 287 | in_handler = inb_nullport; |
| 288 | R_AH = (*in_handler)(port + 1); |
| 289 | debug(D_PORT, "IN on port %02x -> %04x\n", port, R_AX); |
| 290 | } |
| 291 | |
| 292 | void |
| 293 | insx(regcontext_t *REGS, int port) |
| 294 | { |
| 295 | unsigned char (*in_handler)(int); |
| 296 | unsigned char data; |
| 297 | |
| 298 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 299 | in_handler = portsw[port].p_inb; |
| 300 | else |
| 301 | in_handler = inb_nullport; |
| 302 | data = (*in_handler)(port); |
| 303 | *(u_char *)MAKEPTR(R_ES, R_DI) = data; |
| 304 | debug(D_PORT, "INS on port %02x -> %02x\n", port, data); |
| 305 | |
| 306 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 307 | in_handler = portsw[port + 1].p_inb; |
| 308 | else |
| 309 | in_handler = inb_nullport; |
| 310 | data = (*in_handler)(port + 1); |
| 311 | ((u_char *)MAKEPTR(R_ES, R_DI))[1] = data; |
| 312 | debug(D_PORT, "INS on port %02x -> %02x\n", port, data); |
| 313 | |
| 314 | if (R_FLAGS & PSL_D) |
| 315 | R_DI -= 2; |
| 316 | else |
| 317 | R_DI += 2; |
| 318 | } |
| 319 | |
| 320 | void |
| 321 | outb(regcontext_t *REGS, int port) |
| 322 | { |
| 323 | void (*out_handler)(int, unsigned char); |
| 324 | |
| 325 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 326 | out_handler = portsw[port].p_outb; |
| 327 | else |
| 328 | out_handler = outb_nullport; |
| 329 | (*out_handler)(port, R_AL); |
| 330 | debug(D_PORT, "OUT on port %02x <- %02x\n", port, R_AL); |
| 331 | /* |
| 332 | if (port == 0x3bc && R_AL == 0x55) |
| 333 | tmode = 1; |
| 334 | */ |
| 335 | } |
| 336 | |
| 337 | void |
| 338 | outx(regcontext_t *REGS, int port) |
| 339 | { |
| 340 | void (*out_handler)(int, unsigned char); |
| 341 | |
| 342 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 343 | out_handler = portsw[port].p_outb; |
| 344 | else |
| 345 | out_handler = outb_nullport; |
| 346 | (*out_handler)(port, R_AL); |
| 347 | debug(D_PORT, "OUT on port %02x <- %02x\n", port, R_AL); |
| 348 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 349 | out_handler = portsw[port + 1].p_outb; |
| 350 | else |
| 351 | out_handler = outb_nullport; |
| 352 | (*out_handler)(port + 1, R_AH); |
| 353 | debug(D_PORT, "OUT on port %02x <- %02x\n", port + 1, R_AH); |
| 354 | } |
| 355 | |
| 356 | void |
| 357 | outsb(regcontext_t *REGS, int port) |
| 358 | { |
| 359 | void (*out_handler)(int, unsigned char); |
| 360 | unsigned char value; |
| 361 | |
| 362 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 363 | out_handler = portsw[port].p_outb; |
| 364 | else |
| 365 | out_handler = outb_nullport; |
| 366 | value = *(u_char *)MAKEPTR(R_ES, R_DI); |
| 367 | debug(D_PORT, "OUT on port %02x <- %02x\n", port, value); |
| 368 | (*out_handler)(port, value); |
| 369 | |
| 370 | if (R_FLAGS & PSL_D) |
| 371 | R_DI--; |
| 372 | else |
| 373 | R_DI++; |
| 374 | } |
| 375 | |
| 376 | void |
| 377 | outsx(regcontext_t *REGS, int port) |
| 378 | { |
| 379 | void (*out_handler)(int, unsigned char); |
| 380 | unsigned char value; |
| 381 | |
| 382 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 383 | out_handler = portsw[port].p_outb; |
| 384 | else |
| 385 | out_handler = outb_nullport; |
| 386 | value = *(u_char *)MAKEPTR(R_ES, R_DI); |
| 387 | debug(D_PORT, "OUT on port %02x <- %02x\n", port, value); |
| 388 | (*out_handler)(port, value); |
| 389 | |
| 390 | if ((port >= MINPORT) && (port < MAXPORT)) |
| 391 | out_handler = portsw[port + 1].p_outb; |
| 392 | else |
| 393 | out_handler = outb_nullport; |
| 394 | value = ((u_char *)MAKEPTR(R_ES, R_DI))[1]; |
| 395 | debug(D_PORT, "OUT on port %02x <- %02x\n", port+1, value); |
| 396 | (*out_handler)(port + 1, value); |
| 397 | |
| 398 | if (R_FLAGS & PSL_D) |
| 399 | R_DI -= 2; |
| 400 | else |
| 401 | R_DI += 2; |
| 402 | } |
| 403 | |
| 404 | unsigned char port_61 = 0x10; |
| 405 | int sound_on = 1; |
| 406 | int sound_freq = 1000; |
| 407 | |
| 408 | void |
| 409 | outb_speaker(int port __unused, unsigned char byte) |
| 410 | { |
| 411 | #if 0 /*XXXXX*/ |
| 412 | if (raw_kbd) { |
| 413 | if ((port_61 & 3) != 3) { |
| 414 | if ((byte & 3) == 3 && /* prtim[2].gate && */ sound_on) |
| 415 | ioctl(kbd_fd, PCCONIOCSTARTBEEP, &sound_freq); |
| 416 | } else if ((byte & 3) != 3) |
| 417 | ioctl(kbd_fd, PCCONIOCSTOPBEEP); |
| 418 | } |
| 419 | #endif |
| 420 | port_61 = byte; |
| 421 | } |
| 422 | |
| 423 | unsigned char |
| 424 | inb_speaker(int port __unused) |
| 425 | { |
| 426 | /* port_61 = (port_61 + 1) & 0xff; */ |
| 427 | return(port_61); |
| 428 | } |
| 429 | |
| 430 | void |
| 431 | speaker_init() |
| 432 | { |
| 433 | define_input_port_handler(0x61, inb_speaker); |
| 434 | define_output_port_handler(0x61, outb_speaker); |
| 435 | |
| 436 | } |