1 /*- 2 * Copyright (c) 1998 Michael Smith (msmith@freebsd.org) 3 * Copyright (c) 1997 Kazutaka YOKOTA (yokota@zodiac.mech.utsunomiya-u.ac.jp) 4 * All rights reserved. 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 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 * Id: probe_keyboard.c,v 1.13 1997/06/09 05:10:55 bde Exp 28 */ 29 30 #include <sys/cdefs.h> 31 __FBSDID("$FreeBSD$"); 32 33 #include <stand.h> 34 #include <sys/param.h> 35 #include <bootstrap.h> 36 #include <btxv86.h> 37 #include <gfx_fb.h> 38 #include <teken.h> 39 #include <stdbool.h> 40 #include "vbe.h" 41 42 #include <dev/vt/hw/vga/vt_vga_reg.h> 43 44 #include "libi386.h" 45 46 #if KEYBOARD_PROBE 47 static int probe_keyboard(void); 48 #endif 49 static void vidc_probe(struct console *cp); 50 static int vidc_init(int arg); 51 static void vidc_putchar(int c); 52 static int vidc_getchar(void); 53 static int vidc_ischar(void); 54 static void cons_draw_frame(teken_attr_t *); 55 56 static int vidc_started; 57 static uint16_t *vgatext; 58 59 static tf_bell_t vidc_cons_bell; 60 static tf_cursor_t vidc_text_cursor; 61 static tf_putchar_t vidc_text_putchar; 62 static tf_fill_t vidc_text_fill; 63 static tf_copy_t vidc_text_copy; 64 static tf_param_t vidc_text_param; 65 static tf_respond_t vidc_cons_respond; 66 67 static teken_funcs_t tf = { 68 .tf_bell = vidc_cons_bell, 69 .tf_cursor = vidc_text_cursor, 70 .tf_putchar = vidc_text_putchar, 71 .tf_fill = vidc_text_fill, 72 .tf_copy = vidc_text_copy, 73 .tf_param = vidc_text_param, 74 .tf_respond = vidc_cons_respond, 75 }; 76 77 static teken_funcs_t tfx = { 78 .tf_bell = vidc_cons_bell, 79 .tf_cursor = gfx_fb_cursor, 80 .tf_putchar = gfx_fb_putchar, 81 .tf_fill = gfx_fb_fill, 82 .tf_copy = gfx_fb_copy, 83 .tf_param = gfx_fb_param, 84 .tf_respond = vidc_cons_respond, 85 }; 86 87 #define KEYBUFSZ 10 88 89 static uint8_t keybuf[KEYBUFSZ]; /* keybuf for extended codes */ 90 91 struct console vidconsole = { 92 .c_name = "vidconsole", 93 .c_desc = "internal video/keyboard", 94 .c_flags = 0, 95 .c_probe = vidc_probe, 96 .c_init = vidc_init, 97 .c_out = vidc_putchar, 98 .c_in = vidc_getchar, 99 .c_ready = vidc_ischar 100 }; 101 102 /* 103 * This function is used to mark a rectangular image area so the scrolling 104 * will know we need to copy the data from there. 105 */ 106 void 107 term_image_display(teken_gfx_t *state, const teken_rect_t *r) 108 { 109 teken_pos_t p; 110 int idx; 111 112 for (p.tp_row = r->tr_begin.tp_row; 113 p.tp_row < r->tr_end.tp_row; p.tp_row++) { 114 for (p.tp_col = r->tr_begin.tp_col; 115 p.tp_col < r->tr_end.tp_col; p.tp_col++) { 116 idx = p.tp_col + p.tp_row * state->tg_tp.tp_col; 117 if (idx >= state->tg_tp.tp_col * state->tg_tp.tp_row) 118 return; 119 screen_buffer[idx].a.ta_format |= TF_IMAGE; 120 } 121 } 122 } 123 124 static void 125 vidc_text_set_cursor(teken_unit_t row, teken_unit_t col, bool visible) 126 { 127 uint16_t addr; 128 uint8_t msl, s, e; 129 130 msl = vga_get_crtc(VGA_REG_BASE, VGA_CRTC_MAX_SCAN_LINE) & 0x1f; 131 s = vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_START) & 0xC0; 132 e = vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_END); 133 134 if (visible == true) { 135 addr = row * TEXT_COLS + col; 136 vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_HIGH, addr >> 8); 137 vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_LOW, 138 addr & 0xff); 139 e = msl; 140 } else { 141 s |= (1<<5); 142 } 143 vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_START, s); 144 vga_set_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_END, e); 145 } 146 147 static void 148 vidc_text_get_cursor(teken_unit_t *row, teken_unit_t *col) 149 { 150 uint16_t addr; 151 152 addr = (vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_HIGH) << 8) + 153 vga_get_crtc(VGA_REG_BASE, VGA_CRTC_CURSOR_LOC_LOW); 154 155 *row = addr / TEXT_COLS; 156 *col = addr % TEXT_COLS; 157 } 158 159 /* 160 * Not implemented. 161 */ 162 static void 163 vidc_cons_bell(void *s __unused) 164 { 165 } 166 167 static void 168 vidc_text_cursor(void *s __unused, const teken_pos_t *p) 169 { 170 teken_unit_t row, col; 171 172 if (p->tp_col == TEXT_COLS) 173 col = p->tp_col - 1; 174 else 175 col = p->tp_col; 176 177 if (p->tp_row == TEXT_ROWS) 178 row = p->tp_row - 1; 179 else 180 row = p->tp_row; 181 182 vidc_text_set_cursor(row, col, true); 183 } 184 185 /* 186 * Binary searchable table for Unicode to CP437 conversion. 187 */ 188 struct unicp437 { 189 uint16_t unicode_base; 190 uint8_t cp437_base; 191 uint8_t length; 192 }; 193 194 static const struct unicp437 cp437table[] = { 195 { 0x0020, 0x20, 0x5e }, { 0x00a0, 0x20, 0x00 }, 196 { 0x00a1, 0xad, 0x00 }, { 0x00a2, 0x9b, 0x00 }, 197 { 0x00a3, 0x9c, 0x00 }, { 0x00a5, 0x9d, 0x00 }, 198 { 0x00a7, 0x15, 0x00 }, { 0x00aa, 0xa6, 0x00 }, 199 { 0x00ab, 0xae, 0x00 }, { 0x00ac, 0xaa, 0x00 }, 200 { 0x00b0, 0xf8, 0x00 }, { 0x00b1, 0xf1, 0x00 }, 201 { 0x00b2, 0xfd, 0x00 }, { 0x00b5, 0xe6, 0x00 }, 202 { 0x00b6, 0x14, 0x00 }, { 0x00b7, 0xfa, 0x00 }, 203 { 0x00ba, 0xa7, 0x00 }, { 0x00bb, 0xaf, 0x00 }, 204 { 0x00bc, 0xac, 0x00 }, { 0x00bd, 0xab, 0x00 }, 205 { 0x00bf, 0xa8, 0x00 }, { 0x00c4, 0x8e, 0x01 }, 206 { 0x00c6, 0x92, 0x00 }, { 0x00c7, 0x80, 0x00 }, 207 { 0x00c9, 0x90, 0x00 }, { 0x00d1, 0xa5, 0x00 }, 208 { 0x00d6, 0x99, 0x00 }, { 0x00dc, 0x9a, 0x00 }, 209 { 0x00df, 0xe1, 0x00 }, { 0x00e0, 0x85, 0x00 }, 210 { 0x00e1, 0xa0, 0x00 }, { 0x00e2, 0x83, 0x00 }, 211 { 0x00e4, 0x84, 0x00 }, { 0x00e5, 0x86, 0x00 }, 212 { 0x00e6, 0x91, 0x00 }, { 0x00e7, 0x87, 0x00 }, 213 { 0x00e8, 0x8a, 0x00 }, { 0x00e9, 0x82, 0x00 }, 214 { 0x00ea, 0x88, 0x01 }, { 0x00ec, 0x8d, 0x00 }, 215 { 0x00ed, 0xa1, 0x00 }, { 0x00ee, 0x8c, 0x00 }, 216 { 0x00ef, 0x8b, 0x00 }, { 0x00f0, 0xeb, 0x00 }, 217 { 0x00f1, 0xa4, 0x00 }, { 0x00f2, 0x95, 0x00 }, 218 { 0x00f3, 0xa2, 0x00 }, { 0x00f4, 0x93, 0x00 }, 219 { 0x00f6, 0x94, 0x00 }, { 0x00f7, 0xf6, 0x00 }, 220 { 0x00f8, 0xed, 0x00 }, { 0x00f9, 0x97, 0x00 }, 221 { 0x00fa, 0xa3, 0x00 }, { 0x00fb, 0x96, 0x00 }, 222 { 0x00fc, 0x81, 0x00 }, { 0x00ff, 0x98, 0x00 }, 223 { 0x0192, 0x9f, 0x00 }, { 0x0393, 0xe2, 0x00 }, 224 { 0x0398, 0xe9, 0x00 }, { 0x03a3, 0xe4, 0x00 }, 225 { 0x03a6, 0xe8, 0x00 }, { 0x03a9, 0xea, 0x00 }, 226 { 0x03b1, 0xe0, 0x01 }, { 0x03b4, 0xeb, 0x00 }, 227 { 0x03b5, 0xee, 0x00 }, { 0x03bc, 0xe6, 0x00 }, 228 { 0x03c0, 0xe3, 0x00 }, { 0x03c3, 0xe5, 0x00 }, 229 { 0x03c4, 0xe7, 0x00 }, { 0x03c6, 0xed, 0x00 }, 230 { 0x03d5, 0xed, 0x00 }, { 0x2010, 0x2d, 0x00 }, 231 { 0x2014, 0x2d, 0x00 }, { 0x2018, 0x60, 0x00 }, 232 { 0x2019, 0x27, 0x00 }, { 0x201c, 0x22, 0x00 }, 233 { 0x201d, 0x22, 0x00 }, { 0x2022, 0x07, 0x00 }, 234 { 0x203c, 0x13, 0x00 }, { 0x207f, 0xfc, 0x00 }, 235 { 0x20a7, 0x9e, 0x00 }, { 0x20ac, 0xee, 0x00 }, 236 { 0x2126, 0xea, 0x00 }, { 0x2190, 0x1b, 0x00 }, 237 { 0x2191, 0x18, 0x00 }, { 0x2192, 0x1a, 0x00 }, 238 { 0x2193, 0x19, 0x00 }, { 0x2194, 0x1d, 0x00 }, 239 { 0x2195, 0x12, 0x00 }, { 0x21a8, 0x17, 0x00 }, 240 { 0x2202, 0xeb, 0x00 }, { 0x2208, 0xee, 0x00 }, 241 { 0x2211, 0xe4, 0x00 }, { 0x2212, 0x2d, 0x00 }, 242 { 0x2219, 0xf9, 0x00 }, { 0x221a, 0xfb, 0x00 }, 243 { 0x221e, 0xec, 0x00 }, { 0x221f, 0x1c, 0x00 }, 244 { 0x2229, 0xef, 0x00 }, { 0x2248, 0xf7, 0x00 }, 245 { 0x2261, 0xf0, 0x00 }, { 0x2264, 0xf3, 0x00 }, 246 { 0x2265, 0xf2, 0x00 }, { 0x2302, 0x7f, 0x00 }, 247 { 0x2310, 0xa9, 0x00 }, { 0x2320, 0xf4, 0x00 }, 248 { 0x2321, 0xf5, 0x00 }, { 0x2500, 0xc4, 0x00 }, 249 { 0x2502, 0xb3, 0x00 }, { 0x250c, 0xda, 0x00 }, 250 { 0x2510, 0xbf, 0x00 }, { 0x2514, 0xc0, 0x00 }, 251 { 0x2518, 0xd9, 0x00 }, { 0x251c, 0xc3, 0x00 }, 252 { 0x2524, 0xb4, 0x00 }, { 0x252c, 0xc2, 0x00 }, 253 { 0x2534, 0xc1, 0x00 }, { 0x253c, 0xc5, 0x00 }, 254 { 0x2550, 0xcd, 0x00 }, { 0x2551, 0xba, 0x00 }, 255 { 0x2552, 0xd5, 0x00 }, { 0x2553, 0xd6, 0x00 }, 256 { 0x2554, 0xc9, 0x00 }, { 0x2555, 0xb8, 0x00 }, 257 { 0x2556, 0xb7, 0x00 }, { 0x2557, 0xbb, 0x00 }, 258 { 0x2558, 0xd4, 0x00 }, { 0x2559, 0xd3, 0x00 }, 259 { 0x255a, 0xc8, 0x00 }, { 0x255b, 0xbe, 0x00 }, 260 { 0x255c, 0xbd, 0x00 }, { 0x255d, 0xbc, 0x00 }, 261 { 0x255e, 0xc6, 0x01 }, { 0x2560, 0xcc, 0x00 }, 262 { 0x2561, 0xb5, 0x00 }, { 0x2562, 0xb6, 0x00 }, 263 { 0x2563, 0xb9, 0x00 }, { 0x2564, 0xd1, 0x01 }, 264 { 0x2566, 0xcb, 0x00 }, { 0x2567, 0xcf, 0x00 }, 265 { 0x2568, 0xd0, 0x00 }, { 0x2569, 0xca, 0x00 }, 266 { 0x256a, 0xd8, 0x00 }, { 0x256b, 0xd7, 0x00 }, 267 { 0x256c, 0xce, 0x00 }, { 0x2580, 0xdf, 0x00 }, 268 { 0x2584, 0xdc, 0x00 }, { 0x2588, 0xdb, 0x00 }, 269 { 0x258c, 0xdd, 0x00 }, { 0x2590, 0xde, 0x00 }, 270 { 0x2591, 0xb0, 0x02 }, { 0x25a0, 0xfe, 0x00 }, 271 { 0x25ac, 0x16, 0x00 }, { 0x25b2, 0x1e, 0x00 }, 272 { 0x25ba, 0x10, 0x00 }, { 0x25bc, 0x1f, 0x00 }, 273 { 0x25c4, 0x11, 0x00 }, { 0x25cb, 0x09, 0x00 }, 274 { 0x25d8, 0x08, 0x00 }, { 0x25d9, 0x0a, 0x00 }, 275 { 0x263a, 0x01, 0x01 }, { 0x263c, 0x0f, 0x00 }, 276 { 0x2640, 0x0c, 0x00 }, { 0x2642, 0x0b, 0x00 }, 277 { 0x2660, 0x06, 0x00 }, { 0x2663, 0x05, 0x00 }, 278 { 0x2665, 0x03, 0x01 }, { 0x266a, 0x0d, 0x00 }, 279 { 0x266c, 0x0e, 0x00 } 280 }; 281 282 static uint8_t 283 vga_get_cp437(teken_char_t c) 284 { 285 int min, mid, max; 286 287 min = 0; 288 max = (sizeof(cp437table) / sizeof(struct unicp437)) - 1; 289 290 if (c < cp437table[0].unicode_base || 291 c > cp437table[max].unicode_base + cp437table[max].length) 292 return ('?'); 293 294 while (max >= min) { 295 mid = (min + max) / 2; 296 if (c < cp437table[mid].unicode_base) 297 max = mid - 1; 298 else if (c > cp437table[mid].unicode_base + 299 cp437table[mid].length) 300 min = mid + 1; 301 else 302 return (c - cp437table[mid].unicode_base + 303 cp437table[mid].cp437_base); 304 } 305 306 return ('?'); 307 } 308 309 static void 310 vidc_text_printchar(teken_gfx_t *state, const teken_pos_t *p) 311 { 312 int idx; 313 uint8_t attr; 314 struct text_pixel *px; 315 teken_color_t fg, bg, tmp; 316 struct cgatext { 317 uint8_t ch; 318 uint8_t attr; 319 } *addr; 320 321 idx = p->tp_col + p->tp_row * state->tg_tp.tp_col; 322 px = &screen_buffer[idx]; 323 fg = teken_256to16(px->a.ta_fgcolor); 324 bg = teken_256to16(px->a.ta_bgcolor); 325 if (px->a.ta_format & TF_BOLD) 326 fg |= TC_LIGHT; 327 if (px->a.ta_format & TF_BLINK) 328 bg |= TC_LIGHT; 329 330 if (px->a.ta_format & TF_REVERSE) { 331 tmp = fg; 332 fg = bg; 333 bg = tmp; 334 } 335 336 attr = (cmap[bg & 0xf] << 4) | cmap[fg & 0xf]; 337 addr = (struct cgatext *)vgatext; 338 addr[idx].ch = vga_get_cp437(px->c); 339 addr[idx].attr = attr; 340 } 341 342 static void 343 vidc_text_putchar(void *s, const teken_pos_t *p, teken_char_t c, 344 const teken_attr_t *a) 345 { 346 teken_gfx_t *state = s; 347 int attr, idx; 348 349 idx = p->tp_col + p->tp_row * state->tg_tp.tp_col; 350 if (idx >= state->tg_tp.tp_col * state->tg_tp.tp_row) 351 return; 352 353 screen_buffer[idx].c = c; 354 screen_buffer[idx].a = *a; 355 356 vidc_text_printchar(state, p); 357 } 358 359 static void 360 vidc_text_fill(void *arg, const teken_rect_t *r, teken_char_t c, 361 const teken_attr_t *a) 362 { 363 teken_gfx_t *state = arg; 364 teken_pos_t p; 365 teken_unit_t row, col; 366 367 vidc_text_get_cursor(&row, &col); 368 vidc_text_set_cursor(row, col, false); 369 for (p.tp_row = r->tr_begin.tp_row; p.tp_row < r->tr_end.tp_row; 370 p.tp_row++) 371 for (p.tp_col = r->tr_begin.tp_col; 372 p.tp_col < r->tr_end.tp_col; p.tp_col++) 373 vidc_text_putchar(state, &p, c, a); 374 vidc_text_set_cursor(row, col, true); 375 } 376 377 static void 378 vidc_text_copy(void *ptr, const teken_rect_t *r, const teken_pos_t *p) 379 { 380 teken_gfx_t *state = ptr; 381 int srow, drow; 382 int nrow, ncol, x, y; /* Has to be signed - >= 0 comparison */ 383 teken_pos_t d, s; 384 teken_unit_t row, col; 385 386 /* 387 * Copying is a little tricky. We must make sure we do it in 388 * correct order, to make sure we don't overwrite our own data. 389 */ 390 391 nrow = r->tr_end.tp_row - r->tr_begin.tp_row; 392 ncol = r->tr_end.tp_col - r->tr_begin.tp_col; 393 394 vidc_text_get_cursor(&row, &col); 395 vidc_text_set_cursor(row, col, false); 396 if (p->tp_row < r->tr_begin.tp_row) { 397 /* Copy from bottom to top. */ 398 for (y = 0; y < nrow; y++) { 399 d.tp_row = p->tp_row + y; 400 s.tp_row = r->tr_begin.tp_row + y; 401 drow = d.tp_row * state->tg_tp.tp_col; 402 srow = s.tp_row * state->tg_tp.tp_col; 403 for (x = 0; x < ncol; x++) { 404 d.tp_col = p->tp_col + x; 405 s.tp_col = r->tr_begin.tp_col + x; 406 407 if (!is_same_pixel( 408 &screen_buffer[d.tp_col + drow], 409 &screen_buffer[s.tp_col + srow])) { 410 screen_buffer[d.tp_col + drow] = 411 screen_buffer[s.tp_col + srow]; 412 vidc_text_printchar(state, &d); 413 } 414 } 415 } 416 } else { 417 /* Copy from top to bottom. */ 418 if (p->tp_col < r->tr_begin.tp_col) { 419 /* Copy from right to left. */ 420 for (y = nrow - 1; y >= 0; y--) { 421 d.tp_row = p->tp_row + y; 422 s.tp_row = r->tr_begin.tp_row + y; 423 drow = d.tp_row * state->tg_tp.tp_col; 424 srow = s.tp_row * state->tg_tp.tp_col; 425 for (x = 0; x < ncol; x++) { 426 d.tp_col = p->tp_col + x; 427 s.tp_col = r->tr_begin.tp_col + x; 428 429 if (!is_same_pixel( 430 &screen_buffer[d.tp_col + drow], 431 &screen_buffer[s.tp_col + srow])) { 432 screen_buffer[d.tp_col + drow] = 433 screen_buffer[s.tp_col + srow]; 434 vidc_text_printchar(state, &d); 435 } 436 } 437 } 438 } else { 439 /* Copy from left to right. */ 440 for (y = nrow - 1; y >= 0; y--) { 441 d.tp_row = p->tp_row + y; 442 s.tp_row = r->tr_begin.tp_row + y; 443 drow = d.tp_row * state->tg_tp.tp_col; 444 srow = s.tp_row * state->tg_tp.tp_col; 445 for (x = ncol - 1; x >= 0; x--) { 446 d.tp_col = p->tp_col + x; 447 s.tp_col = r->tr_begin.tp_col + x; 448 449 if (!is_same_pixel( 450 &screen_buffer[d.tp_col + drow], 451 &screen_buffer[s.tp_col + srow])) { 452 screen_buffer[d.tp_col + drow] = 453 screen_buffer[s.tp_col + srow]; 454 vidc_text_printchar(state, &d); 455 } 456 } 457 } 458 } 459 } 460 vidc_text_set_cursor(row, col, true); 461 } 462 463 static void 464 vidc_text_param(void *arg, int cmd, unsigned int value) 465 { 466 teken_gfx_t *state = arg; 467 teken_unit_t row, col; 468 469 switch (cmd) { 470 case TP_SETLOCALCURSOR: 471 /* 472 * 0 means normal (usually block), 1 means hidden, and 473 * 2 means blinking (always block) for compatibility with 474 * syscons. We don't support any changes except hiding, 475 * so must map 2 to 0. 476 */ 477 value = (value == 1) ? 0 : 1; 478 /* FALLTHROUGH */ 479 case TP_SHOWCURSOR: 480 vidc_text_get_cursor(&row, &col); 481 if (value != 0) { 482 vidc_text_set_cursor(row, col, true); 483 state->tg_cursor_visible = true; 484 } else { 485 vidc_text_set_cursor(row, col, false); 486 state->tg_cursor_visible = false; 487 } 488 break; 489 default: 490 /* Not yet implemented */ 491 break; 492 } 493 } 494 495 /* 496 * Not implemented. 497 */ 498 static void 499 vidc_cons_respond(void *s __unused, const void *buf __unused, 500 size_t len __unused) 501 { 502 } 503 504 static void 505 vidc_probe(struct console *cp) 506 { 507 508 /* look for a keyboard */ 509 #if KEYBOARD_PROBE 510 if (probe_keyboard()) 511 #endif 512 { 513 514 cp->c_flags |= C_PRESENTIN; 515 } 516 517 /* XXX for now, always assume we can do BIOS screen output */ 518 cp->c_flags |= C_PRESENTOUT; 519 } 520 521 static bool 522 color_name_to_teken(const char *name, int *val) 523 { 524 if (strcasecmp(name, "black") == 0) { 525 *val = TC_BLACK; 526 return (true); 527 } 528 if (strcasecmp(name, "red") == 0) { 529 *val = TC_RED; 530 return (true); 531 } 532 if (strcasecmp(name, "green") == 0) { 533 *val = TC_GREEN; 534 return (true); 535 } 536 if (strcasecmp(name, "brown") == 0) { 537 *val = TC_BROWN; 538 return (true); 539 } 540 if (strcasecmp(name, "blue") == 0) { 541 *val = TC_BLUE; 542 return (true); 543 } 544 if (strcasecmp(name, "magenta") == 0) { 545 *val = TC_MAGENTA; 546 return (true); 547 } 548 if (strcasecmp(name, "cyan") == 0) { 549 *val = TC_CYAN; 550 return (true); 551 } 552 if (strcasecmp(name, "white") == 0) { 553 *val = TC_WHITE; 554 return (true); 555 } 556 return (false); 557 } 558 559 static int 560 vidc_set_colors(struct env_var *ev, int flags, const void *value) 561 { 562 int val = 0; 563 char buf[2]; 564 const void *evalue; 565 const teken_attr_t *ap; 566 teken_attr_t a; 567 568 if (value == NULL) 569 return (CMD_OK); 570 571 if (color_name_to_teken(value, &val)) { 572 snprintf(buf, sizeof (buf), "%d", val); 573 evalue = buf; 574 } else { 575 char *end; 576 577 errno = 0; 578 val = (int)strtol(value, &end, 0); 579 if (errno != 0 || *end != '\0') { 580 printf("Allowed values are either ansi color name or " 581 "number from range [0-7].\n"); 582 return (CMD_OK); 583 } 584 evalue = value; 585 } 586 587 ap = teken_get_defattr(&gfx_state.tg_teken); 588 a = *ap; 589 if (strcmp(ev->ev_name, "teken.fg_color") == 0) { 590 /* is it already set? */ 591 if (ap->ta_fgcolor == val) 592 return (CMD_OK); 593 a.ta_fgcolor = val; 594 } 595 if (strcmp(ev->ev_name, "teken.bg_color") == 0) { 596 /* is it already set? */ 597 if (ap->ta_bgcolor == val) 598 return (CMD_OK); 599 a.ta_bgcolor = val; 600 } 601 602 /* Improve visibility */ 603 if (a.ta_bgcolor == TC_WHITE) 604 a.ta_bgcolor |= TC_LIGHT; 605 606 teken_set_defattr(&gfx_state.tg_teken, &a); 607 cons_draw_frame(&a); 608 env_setenv(ev->ev_name, flags | EV_NOHOOK, evalue, NULL, NULL); 609 teken_input(&gfx_state.tg_teken, "\e[2J", 4); 610 611 return (CMD_OK); 612 } 613 614 static int 615 env_screen_nounset(struct env_var *ev __unused) 616 { 617 if (gfx_state.tg_fb_type == FB_TEXT) 618 return (0); 619 return (EPERM); 620 } 621 622 static int 623 vidc_load_palette(uint32_t *cmap) 624 { 625 int i, roff, goff, boff, rc; 626 627 if (pe8 == NULL) 628 pe8 = calloc(sizeof(*pe8), NCMAP); 629 if (pe8 == NULL) 630 return (ENOMEM); 631 632 /* Generate VGA colors */ 633 roff = ffs(gfx_state.tg_fb.fb_mask_red) - 1; 634 goff = ffs(gfx_state.tg_fb.fb_mask_green) - 1; 635 boff = ffs(gfx_state.tg_fb.fb_mask_blue) - 1; 636 rc = generate_cons_palette((uint32_t *)pe8, COLOR_FORMAT_RGB, 637 gfx_state.tg_fb.fb_mask_red >> roff, roff, 638 gfx_state.tg_fb.fb_mask_green >> goff, goff, 639 gfx_state.tg_fb.fb_mask_blue >> boff, boff); 640 641 if (rc == 0) { 642 for (i = 0; i < NCMAP; i++) { 643 int idx; 644 645 if (i < NCOLORS) 646 idx = cons_to_vga_colors[i]; 647 else 648 idx = i; 649 650 rc = vbe_set_palette(&pe8[i], idx); 651 if (rc != 0) 652 break; 653 } 654 } 655 return (rc); 656 } 657 658 static void 659 cons_draw_frame(teken_attr_t *a) 660 { 661 teken_attr_t attr = *a; 662 teken_color_t fg = a->ta_fgcolor; 663 664 attr.ta_fgcolor = attr.ta_bgcolor; 665 teken_set_defattr(&gfx_state.tg_teken, &attr); 666 667 gfx_fb_drawrect(0, 0, gfx_state.tg_fb.fb_width, 668 gfx_state.tg_origin.tp_row, 1); 669 gfx_fb_drawrect(0, 670 gfx_state.tg_fb.fb_height - gfx_state.tg_origin.tp_row - 1, 671 gfx_state.tg_fb.fb_width, gfx_state.tg_fb.fb_height, 1); 672 gfx_fb_drawrect(0, gfx_state.tg_origin.tp_row, 673 gfx_state.tg_origin.tp_col, 674 gfx_state.tg_fb.fb_height - gfx_state.tg_origin.tp_row - 1, 1); 675 gfx_fb_drawrect( 676 gfx_state.tg_fb.fb_width - gfx_state.tg_origin.tp_col - 1, 677 gfx_state.tg_origin.tp_row, gfx_state.tg_fb.fb_width, 678 gfx_state.tg_fb.fb_height, 1); 679 680 attr.ta_fgcolor = fg; 681 teken_set_defattr(&gfx_state.tg_teken, &attr); 682 } 683 684 /* 685 * Binary searchable table for CP437 to Unicode conversion. 686 */ 687 struct cp437uni { 688 uint8_t cp437_base; 689 uint16_t unicode_base; 690 uint8_t length; 691 }; 692 693 static const struct cp437uni cp437unitable[] = { 694 { 0, 0x0000, 0 }, { 1, 0x263A, 1 }, { 3, 0x2665, 1 }, 695 { 5, 0x2663, 0 }, { 6, 0x2660, 0 }, { 7, 0x2022, 0 }, 696 { 8, 0x25D8, 0 }, { 9, 0x25CB, 0 }, { 10, 0x25D9, 0 }, 697 { 11, 0x2642, 0 }, { 12, 0x2640, 0 }, { 13, 0x266A, 1 }, 698 { 15, 0x263C, 0 }, { 16, 0x25BA, 0 }, { 17, 0x25C4, 0 }, 699 { 18, 0x2195, 0 }, { 19, 0x203C, 0 }, { 20, 0x00B6, 0 }, 700 { 21, 0x00A7, 0 }, { 22, 0x25AC, 0 }, { 23, 0x21A8, 0 }, 701 { 24, 0x2191, 0 }, { 25, 0x2193, 0 }, { 26, 0x2192, 0 }, 702 { 27, 0x2190, 0 }, { 28, 0x221F, 0 }, { 29, 0x2194, 0 }, 703 { 30, 0x25B2, 0 }, { 31, 0x25BC, 0 }, { 32, 0x0020, 0x5e }, 704 { 127, 0x2302, 0 }, { 128, 0x00C7, 0 }, { 129, 0x00FC, 0 }, 705 { 130, 0x00E9, 0 }, { 131, 0x00E2, 0 }, { 132, 0x00E4, 0 }, 706 { 133, 0x00E0, 0 }, { 134, 0x00E5, 0 }, { 135, 0x00E7, 0 }, 707 { 136, 0x00EA, 1 }, { 138, 0x00E8, 0 }, { 139, 0x00EF, 0 }, 708 { 140, 0x00EE, 0 }, { 141, 0x00EC, 0 }, { 142, 0x00C4, 1 }, 709 { 144, 0x00C9, 0 }, { 145, 0x00E6, 0 }, { 146, 0x00C6, 0 }, 710 { 147, 0x00F4, 0 }, { 148, 0x00F6, 0 }, { 149, 0x00F2, 0 }, 711 { 150, 0x00FB, 0 }, { 151, 0x00F9, 0 }, { 152, 0x00FF, 0 }, 712 { 153, 0x00D6, 0 }, { 154, 0x00DC, 0 }, { 155, 0x00A2, 1 }, 713 { 157, 0x00A5, 0 }, { 158, 0x20A7, 0 }, { 159, 0x0192, 0 }, 714 { 160, 0x00E1, 0 }, { 161, 0x00ED, 0 }, { 162, 0x00F3, 0 }, 715 { 163, 0x00FA, 0 }, { 164, 0x00F1, 0 }, { 165, 0x00D1, 0 }, 716 { 166, 0x00AA, 0 }, { 167, 0x00BA, 0 }, { 168, 0x00BF, 0 }, 717 { 169, 0x2310, 0 }, { 170, 0x00AC, 0 }, { 171, 0x00BD, 0 }, 718 { 172, 0x00BC, 0 }, { 173, 0x00A1, 0 }, { 174, 0x00AB, 0 }, 719 { 175, 0x00BB, 0 }, { 176, 0x2591, 2 }, { 179, 0x2502, 0 }, 720 { 180, 0x2524, 0 }, { 181, 0x2561, 1 }, { 183, 0x2556, 0 }, 721 { 184, 0x2555, 0 }, { 185, 0x2563, 0 }, { 186, 0x2551, 0 }, 722 { 187, 0x2557, 0 }, { 188, 0x255D, 0 }, { 189, 0x255C, 0 }, 723 { 190, 0x255B, 0 }, { 191, 0x2510, 0 }, { 192, 0x2514, 0 }, 724 { 193, 0x2534, 0 }, { 194, 0x252C, 0 }, { 195, 0x251C, 0 }, 725 { 196, 0x2500, 0 }, { 197, 0x253C, 0 }, { 198, 0x255E, 1 }, 726 { 200, 0x255A, 0 }, { 201, 0x2554, 0 }, { 202, 0x2569, 0 }, 727 { 203, 0x2566, 0 }, { 204, 0x2560, 0 }, { 205, 0x2550, 0 }, 728 { 206, 0x256C, 0 }, { 207, 0x2567, 1 }, { 209, 0x2564, 1 }, 729 { 211, 0x2559, 0 }, { 212, 0x2558, 0 }, { 213, 0x2552, 1 }, 730 { 215, 0x256B, 0 }, { 216, 0x256A, 0 }, { 217, 0x2518, 0 }, 731 { 218, 0x250C, 0 }, { 219, 0x2588, 0 }, { 220, 0x2584, 0 }, 732 { 221, 0x258C, 0 }, { 222, 0x2590, 0 }, { 223, 0x2580, 0 }, 733 { 224, 0x03B1, 0 }, { 225, 0x00DF, 0 }, { 226, 0x0393, 0 }, 734 { 227, 0x03C0, 0 }, { 228, 0x03A3, 0 }, { 229, 0x03C3, 0 }, 735 { 230, 0x00B5, 0 }, { 231, 0x03C4, 0 }, { 232, 0x03A6, 0 }, 736 { 233, 0x0398, 0 }, { 234, 0x03A9, 0 }, { 235, 0x03B4, 0 }, 737 { 236, 0x221E, 0 }, { 237, 0x03C6, 0 }, { 238, 0x03B5, 0 }, 738 { 239, 0x2229, 0 }, { 240, 0x2261, 0 }, { 241, 0x00B1, 0 }, 739 { 242, 0x2265, 0 }, { 243, 0x2264, 0 }, { 244, 0x2320, 1 }, 740 { 246, 0x00F7, 0 }, { 247, 0x2248, 0 }, { 248, 0x00B0, 0 }, 741 { 249, 0x2219, 0 }, { 250, 0x00B7, 0 }, { 251, 0x221A, 0 }, 742 { 252, 0x207F, 0 }, { 253, 0x00B2, 0 }, { 254, 0x25A0, 0 }, 743 { 255, 0x00A0, 0 } 744 }; 745 746 static uint16_t 747 vga_cp437_to_uni(uint8_t c) 748 { 749 int min, mid, max; 750 751 min = 0; 752 max = (sizeof(cp437unitable) / sizeof(struct cp437uni)) - 1; 753 754 while (max >= min) { 755 mid = (min + max) / 2; 756 if (c < cp437unitable[mid].cp437_base) 757 max = mid - 1; 758 else if (c > cp437unitable[mid].cp437_base + 759 cp437unitable[mid].length) 760 min = mid + 1; 761 else 762 return (c - cp437unitable[mid].cp437_base + 763 cp437unitable[mid].unicode_base); 764 } 765 766 return ('?'); 767 } 768 769 /* 770 * install font for text mode 771 */ 772 static void 773 vidc_install_font(void) 774 { 775 static uint8_t fsreg[8] = {0x0, 0x30, 0x5, 0x35, 0xa, 0x3a, 0xf, 0x3f}; 776 const uint8_t *from; 777 uint8_t volatile *to; 778 uint16_t c; 779 int i, j, s; 780 int bpc, f_offset; 781 teken_attr_t a = { 0 }; 782 783 if (gfx_state.tg_fb_type != FB_TEXT) 784 return; 785 786 /* Sync-reset the sequencer registers */ 787 vga_set_seq(VGA_REG_BASE, 0x00, 0x01); 788 /* 789 * enable write to plane2, since fonts 790 * could only be loaded into plane2 791 */ 792 vga_set_seq(VGA_REG_BASE, 0x02, 0x04); 793 /* 794 * sequentially access data in the bit map being 795 * selected by MapMask register (index 0x02) 796 */ 797 vga_set_seq(VGA_REG_BASE, 0x04, 0x07); 798 /* Sync-reset ended, and allow the sequencer to operate */ 799 vga_set_seq(VGA_REG_BASE, 0x00, 0x03); 800 801 /* 802 * select plane 2 on Read Mode 0 803 */ 804 vga_set_grc(VGA_REG_BASE, 0x04, 0x02); 805 /* 806 * system addresses sequentially access data, follow 807 * Memory Mode register bit 2 in the sequencer 808 */ 809 vga_set_grc(VGA_REG_BASE, 0x05, 0x00); 810 /* 811 * set range of host memory addresses decoded by VGA 812 * hardware -- A0000h-BFFFFh (128K region) 813 */ 814 vga_set_grc(VGA_REG_BASE, 0x06, 0x00); 815 816 /* 817 * This assumes 8x16 characters, which yield the traditional 80x25 818 * screen. 819 */ 820 bpc = 16; 821 s = 0; /* font slot, maybe should use tunable there. */ 822 f_offset = s * 8 * 1024; 823 for (i = 0; i < 256; i++) { 824 c = vga_cp437_to_uni(i); 825 from = font_lookup(&gfx_state.tg_font, c, &a); 826 to = (unsigned char *)ptov(VGA_MEM_BASE) + f_offset + 827 i * 0x20; 828 for (j = 0; j < bpc; j++) 829 *to++ = *from++; 830 } 831 832 /* Sync-reset the sequencer registers */ 833 vga_set_seq(VGA_REG_BASE, 0x00, 0x01); 834 /* enable write to plane 0 and 1 */ 835 vga_set_seq(VGA_REG_BASE, 0x02, 0x03); 836 /* 837 * enable character map selection 838 * and odd/even addressing 839 */ 840 vga_set_seq(VGA_REG_BASE, 0x04, 0x03); 841 /* 842 * select font map 843 */ 844 vga_set_seq(VGA_REG_BASE, 0x03, fsreg[s]); 845 /* Sync-reset ended, and allow the sequencer to operate */ 846 vga_set_seq(VGA_REG_BASE, 0x00, 0x03); 847 848 /* restore graphic registers */ 849 850 /* select plane 0 */ 851 vga_set_grc(VGA_REG_BASE, 0x04, 0x00); 852 /* enable odd/even addressing mode */ 853 vga_set_grc(VGA_REG_BASE, 0x05, 0x10); 854 /* 855 * range of host memory addresses decoded by VGA 856 * hardware -- B8000h-BFFFFh (32K region) 857 */ 858 vga_set_grc(VGA_REG_BASE, 0x06, 0x0e); 859 /* enable all color plane */ 860 vga_set_atr(VGA_REG_BASE, 0x12, 0x0f); 861 } 862 863 bool 864 cons_update_mode(bool use_gfx_mode) 865 { 866 const teken_attr_t *a; 867 teken_attr_t attr; 868 char env[10], *ptr; 869 int format, roff, goff, boff; 870 871 gfx_state.tg_tp.tp_row = TEXT_ROWS; 872 gfx_state.tg_tp.tp_col = TEXT_COLS; 873 874 if (use_gfx_mode) { 875 setup_font(&gfx_state, gfx_state.tg_fb.fb_height, 876 gfx_state.tg_fb.fb_width); 877 /* Point of origin in pixels. */ 878 gfx_state.tg_origin.tp_row = (gfx_state.tg_fb.fb_height - 879 (gfx_state.tg_tp.tp_row * gfx_state.tg_font.vf_height)) / 2; 880 gfx_state.tg_origin.tp_col = (gfx_state.tg_fb.fb_width - 881 (gfx_state.tg_tp.tp_col * gfx_state.tg_font.vf_width)) / 2; 882 883 gfx_state.tg_glyph_size = gfx_state.tg_font.vf_height * 884 gfx_state.tg_font.vf_width * 4; 885 free(gfx_state.tg_glyph); 886 gfx_state.tg_glyph = malloc(gfx_state.tg_glyph_size); 887 if (gfx_state.tg_glyph == NULL) 888 return (false); 889 gfx_state.tg_functions = &tfx; 890 snprintf(env, sizeof (env), "%d", gfx_state.tg_fb.fb_height); 891 env_setenv("screen.height", EV_VOLATILE | EV_NOHOOK, env, 892 env_noset, env_screen_nounset); 893 snprintf(env, sizeof (env), "%d", gfx_state.tg_fb.fb_width); 894 env_setenv("screen.width", EV_VOLATILE | EV_NOHOOK, env, 895 env_noset, env_screen_nounset); 896 snprintf(env, sizeof (env), "%d", gfx_state.tg_fb.fb_bpp); 897 env_setenv("screen.depth", EV_VOLATILE | EV_NOHOOK, env, 898 env_noset, env_screen_nounset); 899 } else { 900 /* Trigger loading of 8x16 font. */ 901 setup_font(&gfx_state, 902 16 * gfx_state.tg_fb.fb_height + BORDER_PIXELS, 903 8 * gfx_state.tg_fb.fb_width + BORDER_PIXELS); 904 gfx_state.tg_functions = &tf; 905 /* ensure the following are not set for text mode */ 906 unsetenv("screen.height"); 907 unsetenv("screen.width"); 908 unsetenv("screen.depth"); 909 unsetenv("kern.vt.fb.default_mode"); 910 vidc_install_font(); 911 } 912 913 free(screen_buffer); 914 screen_buffer = malloc(gfx_state.tg_tp.tp_row * gfx_state.tg_tp.tp_col * 915 sizeof(*screen_buffer)); 916 if (screen_buffer == NULL) 917 return (false); 918 919 teken_init(&gfx_state.tg_teken, gfx_state.tg_functions, &gfx_state); 920 921 if (gfx_state.tg_ctype == CT_INDEXED) 922 format = COLOR_FORMAT_VGA; 923 else 924 format = COLOR_FORMAT_RGB; 925 926 roff = ffs(gfx_state.tg_fb.fb_mask_red) - 1; 927 goff = ffs(gfx_state.tg_fb.fb_mask_green) - 1; 928 boff = ffs(gfx_state.tg_fb.fb_mask_blue) - 1; 929 (void) generate_cons_palette(cmap, format, 930 gfx_state.tg_fb.fb_mask_red >> roff, roff, 931 gfx_state.tg_fb.fb_mask_green >> goff, goff, 932 gfx_state.tg_fb.fb_mask_blue >> boff, boff); 933 934 if (gfx_state.tg_ctype == CT_INDEXED) 935 vidc_load_palette(cmap); 936 937 teken_set_winsize(&gfx_state.tg_teken, &gfx_state.tg_tp); 938 a = teken_get_defattr(&gfx_state.tg_teken); 939 attr = *a; 940 941 /* 942 * On first run, we set up the vidc_set_colors() 943 * callback. If the env is already set, we 944 * pick up fg and bg color values from the environment. 945 */ 946 ptr = getenv("teken.fg_color"); 947 if (ptr != NULL) { 948 attr.ta_fgcolor = strtol(ptr, NULL, 10); 949 ptr = getenv("teken.bg_color"); 950 attr.ta_bgcolor = strtol(ptr, NULL, 10); 951 952 teken_set_defattr(&gfx_state.tg_teken, &attr); 953 } else { 954 snprintf(env, sizeof(env), "%d", attr.ta_fgcolor); 955 env_setenv("teken.fg_color", EV_VOLATILE, env, 956 vidc_set_colors, env_nounset); 957 snprintf(env, sizeof(env), "%d", attr.ta_bgcolor); 958 env_setenv("teken.bg_color", EV_VOLATILE, env, 959 vidc_set_colors, env_nounset); 960 } 961 962 /* Improve visibility */ 963 if (attr.ta_bgcolor == TC_WHITE) 964 attr.ta_bgcolor |= TC_LIGHT; 965 teken_set_defattr(&gfx_state.tg_teken, &attr); 966 967 snprintf(env, sizeof (env), "%u", (unsigned)gfx_state.tg_tp.tp_row); 968 setenv("LINES", env, 1); 969 snprintf(env, sizeof (env), "%u", (unsigned)gfx_state.tg_tp.tp_col); 970 setenv("COLUMNS", env, 1); 971 972 /* Draw frame around terminal area. */ 973 cons_draw_frame(&attr); 974 /* Erase display, this will also fill our screen buffer. */ 975 teken_input(&gfx_state.tg_teken, "\e[2J", 4); 976 gfx_state.tg_functions->tf_param(&gfx_state, TP_SHOWCURSOR, 1); 977 978 return (true); 979 } 980 981 static int 982 vidc_init(int arg) 983 { 984 const teken_attr_t *a; 985 int val; 986 char env[8]; 987 988 if (vidc_started && arg == 0) 989 return (0); 990 991 vidc_started = 1; 992 vbe_init(); 993 994 /* 995 * Check Miscellaneous Output Register (Read at 3CCh, Write at 3C2h) 996 * for bit 1 (Input/Output Address Select), which means 997 * color/graphics adapter. 998 */ 999 if (vga_get_reg(VGA_REG_BASE, VGA_GEN_MISC_OUTPUT_R) & VGA_GEN_MO_IOA) 1000 vgatext = (uint16_t *)PTOV(VGA_TXT_BASE); 1001 else 1002 vgatext = (uint16_t *)PTOV(VGA_MEM_BASE + VGA_MEM_SIZE); 1003 1004 /* set 16bit colors */ 1005 val = vga_get_atr(VGA_REG_BASE, VGA_AC_MODE_CONTROL); 1006 val &= ~VGA_AC_MC_BI; 1007 val &= ~VGA_AC_MC_ELG; 1008 vga_set_atr(VGA_REG_BASE, VGA_AC_MODE_CONTROL, val); 1009 1010 #if defined(FRAMEBUFFER_MODE) 1011 val = vbe_default_mode(); 1012 /* if val is not legal VBE mode, use text mode */ 1013 if (VBE_VALID_MODE(val)) { 1014 if (vbe_set_mode(val) != 0) 1015 bios_set_text_mode(VGA_TEXT_MODE); 1016 } 1017 #endif 1018 1019 gfx_framework_init(); 1020 1021 if (!cons_update_mode(VBE_VALID_MODE(vbe_get_mode()))) 1022 return (1); 1023 1024 for (int i = 0; i < 10 && vidc_ischar(); i++) 1025 (void) vidc_getchar(); 1026 1027 return (0); /* XXX reinit? */ 1028 } 1029 1030 void 1031 vidc_biosputchar(int c) 1032 { 1033 1034 v86.ctl = 0; 1035 v86.addr = 0x10; 1036 v86.eax = 0xe00 | (c & 0xff); 1037 v86.ebx = 0x7; 1038 v86int(); 1039 } 1040 1041 static void 1042 vidc_putchar(int c) 1043 { 1044 unsigned char ch = c; 1045 1046 if (screen_buffer != NULL) 1047 teken_input(&gfx_state.tg_teken, &ch, sizeof (ch)); 1048 else 1049 vidc_biosputchar(c); 1050 } 1051 1052 static int 1053 vidc_getchar(void) 1054 { 1055 int i, c; 1056 1057 for (i = 0; i < KEYBUFSZ; i++) { 1058 if (keybuf[i] != 0) { 1059 c = keybuf[i]; 1060 keybuf[i] = 0; 1061 return (c); 1062 } 1063 } 1064 1065 if (vidc_ischar()) { 1066 v86.ctl = 0; 1067 v86.addr = 0x16; 1068 v86.eax = 0x0; 1069 v86int(); 1070 if ((v86.eax & 0xff) != 0) { 1071 return (v86.eax & 0xff); 1072 } 1073 1074 /* extended keys */ 1075 switch (v86.eax & 0xff00) { 1076 case 0x4800: /* up */ 1077 keybuf[0] = '['; 1078 keybuf[1] = 'A'; 1079 return (0x1b); /* esc */ 1080 case 0x4b00: /* left */ 1081 keybuf[0] = '['; 1082 keybuf[1] = 'D'; 1083 return (0x1b); /* esc */ 1084 case 0x4d00: /* right */ 1085 keybuf[0] = '['; 1086 keybuf[1] = 'C'; 1087 return (0x1b); /* esc */ 1088 case 0x5000: /* down */ 1089 keybuf[0] = '['; 1090 keybuf[1] = 'B'; 1091 return (0x1b); /* esc */ 1092 default: 1093 return (-1); 1094 } 1095 } else { 1096 return (-1); 1097 } 1098 } 1099 1100 static int 1101 vidc_ischar(void) 1102 { 1103 int i; 1104 1105 for (i = 0; i < KEYBUFSZ; i++) { 1106 if (keybuf[i] != 0) { 1107 return (1); 1108 } 1109 } 1110 1111 v86.ctl = V86_FLAGS; 1112 v86.addr = 0x16; 1113 v86.eax = 0x100; 1114 v86int(); 1115 return (!V86_ZR(v86.efl)); 1116 } 1117 1118 #if KEYBOARD_PROBE 1119 1120 #define PROBE_MAXRETRY 5 1121 #define PROBE_MAXWAIT 400 1122 #define IO_DUMMY 0x84 1123 #define IO_KBD 0x060 /* 8042 Keyboard */ 1124 1125 /* selected defines from kbdio.h */ 1126 #define KBD_STATUS_PORT 4 /* status port, read */ 1127 #define KBD_DATA_PORT 0 /* data port, read/write 1128 * also used as keyboard command 1129 * and mouse command port 1130 */ 1131 #define KBDC_ECHO 0x00ee 1132 #define KBDS_ANY_BUFFER_FULL 0x0001 1133 #define KBDS_INPUT_BUFFER_FULL 0x0002 1134 #define KBD_ECHO 0x00ee 1135 1136 /* 7 microsec delay necessary for some keyboard controllers */ 1137 static void 1138 delay7(void) 1139 { 1140 /* 1141 * I know this is broken, but no timer is available yet at this stage... 1142 * See also comments in `delay1ms()'. 1143 */ 1144 inb(IO_DUMMY); inb(IO_DUMMY); 1145 inb(IO_DUMMY); inb(IO_DUMMY); 1146 inb(IO_DUMMY); inb(IO_DUMMY); 1147 } 1148 1149 /* 1150 * This routine uses an inb to an unused port, the time to execute that 1151 * inb is approximately 1.25uS. This value is pretty constant across 1152 * all CPU's and all buses, with the exception of some PCI implentations 1153 * that do not forward this I/O address to the ISA bus as they know it 1154 * is not a valid ISA bus address, those machines execute this inb in 1155 * 60 nS :-(. 1156 * 1157 */ 1158 static void 1159 delay1ms(void) 1160 { 1161 int i = 800; 1162 while (--i >= 0) 1163 (void) inb(0x84); 1164 } 1165 1166 /* 1167 * We use the presence/absence of a keyboard to determine whether the internal 1168 * console can be used for input. 1169 * 1170 * Perform a simple test on the keyboard; issue the ECHO command and see 1171 * if the right answer is returned. We don't do anything as drastic as 1172 * full keyboard reset; it will be too troublesome and take too much time. 1173 */ 1174 static int 1175 probe_keyboard(void) 1176 { 1177 int retry = PROBE_MAXRETRY; 1178 int wait; 1179 int i; 1180 1181 while (--retry >= 0) { 1182 /* flush any noise */ 1183 while (inb(IO_KBD + KBD_STATUS_PORT) & KBDS_ANY_BUFFER_FULL) { 1184 delay7(); 1185 inb(IO_KBD + KBD_DATA_PORT); 1186 delay1ms(); 1187 } 1188 1189 /* wait until the controller can accept a command */ 1190 for (wait = PROBE_MAXWAIT; wait > 0; --wait) { 1191 if (((i = inb(IO_KBD + KBD_STATUS_PORT)) 1192 & (KBDS_INPUT_BUFFER_FULL | KBDS_ANY_BUFFER_FULL)) 1193 == 0) 1194 break; 1195 if (i & KBDS_ANY_BUFFER_FULL) { 1196 delay7(); 1197 inb(IO_KBD + KBD_DATA_PORT); 1198 } 1199 delay1ms(); 1200 } 1201 if (wait <= 0) 1202 continue; 1203 1204 /* send the ECHO command */ 1205 outb(IO_KBD + KBD_DATA_PORT, KBDC_ECHO); 1206 1207 /* wait for a response */ 1208 for (wait = PROBE_MAXWAIT; wait > 0; --wait) { 1209 if (inb(IO_KBD + KBD_STATUS_PORT) & 1210 KBDS_ANY_BUFFER_FULL) 1211 break; 1212 delay1ms(); 1213 } 1214 if (wait <= 0) 1215 continue; 1216 1217 delay7(); 1218 i = inb(IO_KBD + KBD_DATA_PORT); 1219 #ifdef PROBE_KBD_BEBUG 1220 printf("probe_keyboard: got 0x%x.\n", i); 1221 #endif 1222 if (i == KBD_ECHO) { 1223 /* got the right answer */ 1224 return (1); 1225 } 1226 } 1227 1228 return (0); 1229 } 1230 #endif /* KEYBOARD_PROBE */ 1231