1 /* 2 * linux/drivers/video/vgacon.c -- Low level VGA based console driver 3 * 4 * Created 28 Sep 1997 by Geert Uytterhoeven 5 * 6 * Rewritten by Martin Mares <mj@ucw.cz>, July 1998 7 * 8 * This file is based on the old console.c, vga.c and vesa_blank.c drivers. 9 * 10 * Copyright (C) 1991, 1992 Linus Torvalds 11 * 1995 Jay Estabrook 12 * 13 * User definable mapping table and font loading by Eugene G. Crosser, 14 * <crosser@average.org> 15 * 16 * Improved loadable font/UTF-8 support by H. Peter Anvin 17 * Feb-Sep 1995 <peter.anvin@linux.org> 18 * 19 * Colour palette handling, by Simon Tatham 20 * 17-Jun-95 <sgt20@cam.ac.uk> 21 * 22 * if 512 char mode is already enabled don't re-enable it, 23 * because it causes screen to flicker, by Mitja Horvat 24 * 5-May-96 <mitja.horvat@guest.arnes.si> 25 * 26 * Use 2 outw instead of 4 outb_p to reduce erroneous text 27 * flashing on RHS of screen during heavy console scrolling . 28 * Oct 1996, Paul Gortmaker. 29 * 30 * 31 * This file is subject to the terms and conditions of the GNU General Public 32 * License. See the file COPYING in the main directory of this archive for 33 * more details. 34 */ 35 36 #include <linux/module.h> 37 #include <linux/types.h> 38 #include <linux/fs.h> 39 #include <linux/kernel.h> 40 #include <linux/console.h> 41 #include <linux/string.h> 42 #include <linux/kd.h> 43 #include <linux/slab.h> 44 #include <linux/vt_kern.h> 45 #include <linux/sched.h> 46 #include <linux/selection.h> 47 #include <linux/spinlock.h> 48 #include <linux/ioport.h> 49 #include <linux/init.h> 50 #include <linux/screen_info.h> 51 #include <video/vga.h> 52 #include <asm/io.h> 53 54 static DEFINE_RAW_SPINLOCK(vga_lock); 55 static int cursor_size_lastfrom; 56 static int cursor_size_lastto; 57 static u32 vgacon_xres; 58 static u32 vgacon_yres; 59 static struct vgastate vgastate; 60 61 #define BLANK 0x0020 62 63 #define VGA_FONTWIDTH 8 /* VGA does not support fontwidths != 8 */ 64 /* 65 * Interface used by the world 66 */ 67 68 static const char *vgacon_startup(void); 69 static void vgacon_init(struct vc_data *c, int init); 70 static void vgacon_deinit(struct vc_data *c); 71 static void vgacon_cursor(struct vc_data *c, int mode); 72 static int vgacon_switch(struct vc_data *c); 73 static int vgacon_blank(struct vc_data *c, int blank, int mode_switch); 74 static void vgacon_scrolldelta(struct vc_data *c, int lines); 75 static int vgacon_set_origin(struct vc_data *c); 76 static void vgacon_save_screen(struct vc_data *c); 77 static void vgacon_invert_region(struct vc_data *c, u16 * p, int count); 78 static struct uni_pagedir *vgacon_uni_pagedir; 79 static int vgacon_refcount; 80 81 /* Description of the hardware situation */ 82 static unsigned long vga_vram_base __read_mostly; /* Base of video memory */ 83 static unsigned long vga_vram_end __read_mostly; /* End of video memory */ 84 static unsigned int vga_vram_size __read_mostly; /* Size of video memory */ 85 static u16 vga_video_port_reg __read_mostly; /* Video register select port */ 86 static u16 vga_video_port_val __read_mostly; /* Video register value port */ 87 static unsigned int vga_video_num_columns; /* Number of text columns */ 88 static unsigned int vga_video_num_lines; /* Number of text lines */ 89 static bool vga_can_do_color; /* Do we support colors? */ 90 static unsigned int vga_default_font_height __read_mostly; /* Height of default screen font */ 91 static unsigned char vga_video_type __read_mostly; /* Card type */ 92 static int vga_vesa_blanked; 93 static bool vga_palette_blanked; 94 static bool vga_is_gfx; 95 static bool vga_512_chars; 96 static int vga_video_font_height; 97 static int vga_scan_lines __read_mostly; 98 static unsigned int vga_rolled_over; /* last vc_origin offset before wrap */ 99 100 static bool vga_hardscroll_enabled; 101 static bool vga_hardscroll_user_enable = true; 102 103 static int __init no_scroll(char *str) 104 { 105 /* 106 * Disabling scrollback is required for the Braillex ib80-piezo 107 * Braille reader made by F.H. Papenmeier (Germany). 108 * Use the "no-scroll" bootflag. 109 */ 110 vga_hardscroll_user_enable = vga_hardscroll_enabled = false; 111 return 1; 112 } 113 114 __setup("no-scroll", no_scroll); 115 116 /* 117 * By replacing the four outb_p with two back to back outw, we can reduce 118 * the window of opportunity to see text mislocated to the RHS of the 119 * console during heavy scrolling activity. However there is the remote 120 * possibility that some pre-dinosaur hardware won't like the back to back 121 * I/O. Since the Xservers get away with it, we should be able to as well. 122 */ 123 static inline void write_vga(unsigned char reg, unsigned int val) 124 { 125 unsigned int v1, v2; 126 unsigned long flags; 127 128 /* 129 * ddprintk might set the console position from interrupt 130 * handlers, thus the write has to be IRQ-atomic. 131 */ 132 raw_spin_lock_irqsave(&vga_lock, flags); 133 v1 = reg + (val & 0xff00); 134 v2 = reg + 1 + ((val << 8) & 0xff00); 135 outw(v1, vga_video_port_reg); 136 outw(v2, vga_video_port_reg); 137 raw_spin_unlock_irqrestore(&vga_lock, flags); 138 } 139 140 static inline void vga_set_mem_top(struct vc_data *c) 141 { 142 write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2); 143 } 144 145 static void vgacon_restore_screen(struct vc_data *c) 146 { 147 if (c->vc_origin != c->vc_visible_origin) 148 vgacon_scrolldelta(c, 0); 149 } 150 151 static void vgacon_scrolldelta(struct vc_data *c, int lines) 152 { 153 vc_scrolldelta_helper(c, lines, vga_rolled_over, (void *)vga_vram_base, 154 vga_vram_size); 155 vga_set_mem_top(c); 156 } 157 158 static const char *vgacon_startup(void) 159 { 160 const char *display_desc = NULL; 161 u16 saved1, saved2; 162 volatile u16 *p; 163 164 if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB || 165 screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) { 166 no_vga: 167 #ifdef CONFIG_DUMMY_CONSOLE 168 conswitchp = &dummy_con; 169 return conswitchp->con_startup(); 170 #else 171 return NULL; 172 #endif 173 } 174 175 /* boot_params.screen_info reasonably initialized? */ 176 if ((screen_info.orig_video_lines == 0) || 177 (screen_info.orig_video_cols == 0)) 178 goto no_vga; 179 180 /* VGA16 modes are not handled by VGACON */ 181 if ((screen_info.orig_video_mode == 0x0D) || /* 320x200/4 */ 182 (screen_info.orig_video_mode == 0x0E) || /* 640x200/4 */ 183 (screen_info.orig_video_mode == 0x10) || /* 640x350/4 */ 184 (screen_info.orig_video_mode == 0x12) || /* 640x480/4 */ 185 (screen_info.orig_video_mode == 0x6A)) /* 800x600/4 (VESA) */ 186 goto no_vga; 187 188 vga_video_num_lines = screen_info.orig_video_lines; 189 vga_video_num_columns = screen_info.orig_video_cols; 190 vgastate.vgabase = NULL; 191 192 if (screen_info.orig_video_mode == 7) { 193 /* Monochrome display */ 194 vga_vram_base = 0xb0000; 195 vga_video_port_reg = VGA_CRT_IM; 196 vga_video_port_val = VGA_CRT_DM; 197 if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) { 198 static struct resource ega_console_resource = 199 { .name = "ega", 200 .flags = IORESOURCE_IO, 201 .start = 0x3B0, 202 .end = 0x3BF }; 203 vga_video_type = VIDEO_TYPE_EGAM; 204 vga_vram_size = 0x8000; 205 display_desc = "EGA+"; 206 request_resource(&ioport_resource, 207 &ega_console_resource); 208 } else { 209 static struct resource mda1_console_resource = 210 { .name = "mda", 211 .flags = IORESOURCE_IO, 212 .start = 0x3B0, 213 .end = 0x3BB }; 214 static struct resource mda2_console_resource = 215 { .name = "mda", 216 .flags = IORESOURCE_IO, 217 .start = 0x3BF, 218 .end = 0x3BF }; 219 vga_video_type = VIDEO_TYPE_MDA; 220 vga_vram_size = 0x2000; 221 display_desc = "*MDA"; 222 request_resource(&ioport_resource, 223 &mda1_console_resource); 224 request_resource(&ioport_resource, 225 &mda2_console_resource); 226 vga_video_font_height = 14; 227 } 228 } else { 229 /* If not, it is color. */ 230 vga_can_do_color = true; 231 vga_vram_base = 0xb8000; 232 vga_video_port_reg = VGA_CRT_IC; 233 vga_video_port_val = VGA_CRT_DC; 234 if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) { 235 int i; 236 237 vga_vram_size = 0x8000; 238 239 if (!screen_info.orig_video_isVGA) { 240 static struct resource ega_console_resource = 241 { .name = "ega", 242 .flags = IORESOURCE_IO, 243 .start = 0x3C0, 244 .end = 0x3DF }; 245 vga_video_type = VIDEO_TYPE_EGAC; 246 display_desc = "EGA"; 247 request_resource(&ioport_resource, 248 &ega_console_resource); 249 } else { 250 static struct resource vga_console_resource = 251 { .name = "vga+", 252 .flags = IORESOURCE_IO, 253 .start = 0x3C0, 254 .end = 0x3DF }; 255 vga_video_type = VIDEO_TYPE_VGAC; 256 display_desc = "VGA+"; 257 request_resource(&ioport_resource, 258 &vga_console_resource); 259 260 /* 261 * Normalise the palette registers, to point 262 * the 16 screen colours to the first 16 263 * DAC entries. 264 */ 265 266 for (i = 0; i < 16; i++) { 267 inb_p(VGA_IS1_RC); 268 outb_p(i, VGA_ATT_W); 269 outb_p(i, VGA_ATT_W); 270 } 271 outb_p(0x20, VGA_ATT_W); 272 273 /* 274 * Now set the DAC registers back to their 275 * default values 276 */ 277 for (i = 0; i < 16; i++) { 278 outb_p(color_table[i], VGA_PEL_IW); 279 outb_p(default_red[i], VGA_PEL_D); 280 outb_p(default_grn[i], VGA_PEL_D); 281 outb_p(default_blu[i], VGA_PEL_D); 282 } 283 } 284 } else { 285 static struct resource cga_console_resource = 286 { .name = "cga", 287 .flags = IORESOURCE_IO, 288 .start = 0x3D4, 289 .end = 0x3D5 }; 290 vga_video_type = VIDEO_TYPE_CGA; 291 vga_vram_size = 0x2000; 292 display_desc = "*CGA"; 293 request_resource(&ioport_resource, 294 &cga_console_resource); 295 vga_video_font_height = 8; 296 } 297 } 298 299 vga_vram_base = VGA_MAP_MEM(vga_vram_base, vga_vram_size); 300 vga_vram_end = vga_vram_base + vga_vram_size; 301 302 /* 303 * Find out if there is a graphics card present. 304 * Are there smarter methods around? 305 */ 306 p = (volatile u16 *) vga_vram_base; 307 saved1 = scr_readw(p); 308 saved2 = scr_readw(p + 1); 309 scr_writew(0xAA55, p); 310 scr_writew(0x55AA, p + 1); 311 if (scr_readw(p) != 0xAA55 || scr_readw(p + 1) != 0x55AA) { 312 scr_writew(saved1, p); 313 scr_writew(saved2, p + 1); 314 goto no_vga; 315 } 316 scr_writew(0x55AA, p); 317 scr_writew(0xAA55, p + 1); 318 if (scr_readw(p) != 0x55AA || scr_readw(p + 1) != 0xAA55) { 319 scr_writew(saved1, p); 320 scr_writew(saved2, p + 1); 321 goto no_vga; 322 } 323 scr_writew(saved1, p); 324 scr_writew(saved2, p + 1); 325 326 if (vga_video_type == VIDEO_TYPE_EGAC 327 || vga_video_type == VIDEO_TYPE_VGAC 328 || vga_video_type == VIDEO_TYPE_EGAM) { 329 vga_hardscroll_enabled = vga_hardscroll_user_enable; 330 vga_default_font_height = screen_info.orig_video_points; 331 vga_video_font_height = screen_info.orig_video_points; 332 /* This may be suboptimal but is a safe bet - go with it */ 333 vga_scan_lines = 334 vga_video_font_height * vga_video_num_lines; 335 } 336 337 vgacon_xres = screen_info.orig_video_cols * VGA_FONTWIDTH; 338 vgacon_yres = vga_scan_lines; 339 340 return display_desc; 341 } 342 343 static void vgacon_init(struct vc_data *c, int init) 344 { 345 struct uni_pagedir *p; 346 347 /* 348 * We cannot be loaded as a module, therefore init will be 1 349 * if we are the default console, however if we are a fallback 350 * console, for example if fbcon has failed registration, then 351 * init will be 0, so we need to make sure our boot parameters 352 * have been copied to the console structure for vgacon_resize 353 * ultimately called by vc_resize. Any subsequent calls to 354 * vgacon_init init will have init set to 0 too. 355 */ 356 c->vc_can_do_color = vga_can_do_color; 357 c->vc_scan_lines = vga_scan_lines; 358 c->vc_font.height = c->vc_cell_height = vga_video_font_height; 359 360 /* set dimensions manually if init != 0 since vc_resize() will fail */ 361 if (init) { 362 c->vc_cols = vga_video_num_columns; 363 c->vc_rows = vga_video_num_lines; 364 } else 365 vc_resize(c, vga_video_num_columns, vga_video_num_lines); 366 367 c->vc_complement_mask = 0x7700; 368 if (vga_512_chars) 369 c->vc_hi_font_mask = 0x0800; 370 p = *c->vc_uni_pagedir_loc; 371 if (c->vc_uni_pagedir_loc != &vgacon_uni_pagedir) { 372 con_free_unimap(c); 373 c->vc_uni_pagedir_loc = &vgacon_uni_pagedir; 374 vgacon_refcount++; 375 } 376 if (!vgacon_uni_pagedir && p) 377 con_set_default_unimap(c); 378 379 /* Only set the default if the user didn't deliberately override it */ 380 if (global_cursor_default == -1) 381 global_cursor_default = 382 !(screen_info.flags & VIDEO_FLAGS_NOCURSOR); 383 } 384 385 static void vgacon_deinit(struct vc_data *c) 386 { 387 /* When closing the active console, reset video origin */ 388 if (con_is_visible(c)) { 389 c->vc_visible_origin = vga_vram_base; 390 vga_set_mem_top(c); 391 } 392 393 if (!--vgacon_refcount) 394 con_free_unimap(c); 395 c->vc_uni_pagedir_loc = &c->vc_uni_pagedir; 396 con_set_default_unimap(c); 397 } 398 399 static u8 vgacon_build_attr(struct vc_data *c, u8 color, 400 enum vc_intensity intensity, 401 bool blink, bool underline, bool reverse, 402 bool italic) 403 { 404 u8 attr = color; 405 406 if (vga_can_do_color) { 407 if (italic) 408 attr = (attr & 0xF0) | c->vc_itcolor; 409 else if (underline) 410 attr = (attr & 0xf0) | c->vc_ulcolor; 411 else if (intensity == VCI_HALF_BRIGHT) 412 attr = (attr & 0xf0) | c->vc_halfcolor; 413 } 414 if (reverse) 415 attr = 416 ((attr) & 0x88) | ((((attr) >> 4) | ((attr) << 4)) & 417 0x77); 418 if (blink) 419 attr ^= 0x80; 420 if (intensity == VCI_BOLD) 421 attr ^= 0x08; 422 if (!vga_can_do_color) { 423 if (italic) 424 attr = (attr & 0xF8) | 0x02; 425 else if (underline) 426 attr = (attr & 0xf8) | 0x01; 427 else if (intensity == VCI_HALF_BRIGHT) 428 attr = (attr & 0xf0) | 0x08; 429 } 430 return attr; 431 } 432 433 static void vgacon_invert_region(struct vc_data *c, u16 * p, int count) 434 { 435 const bool col = vga_can_do_color; 436 437 while (count--) { 438 u16 a = scr_readw(p); 439 if (col) 440 a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | 441 (((a) & 0x0700) << 4); 442 else 443 a ^= ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700; 444 scr_writew(a, p++); 445 } 446 } 447 448 static void vgacon_set_cursor_size(int xpos, int from, int to) 449 { 450 unsigned long flags; 451 int curs, cure; 452 453 if ((from == cursor_size_lastfrom) && (to == cursor_size_lastto)) 454 return; 455 cursor_size_lastfrom = from; 456 cursor_size_lastto = to; 457 458 raw_spin_lock_irqsave(&vga_lock, flags); 459 if (vga_video_type >= VIDEO_TYPE_VGAC) { 460 outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); 461 curs = inb_p(vga_video_port_val); 462 outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); 463 cure = inb_p(vga_video_port_val); 464 } else { 465 curs = 0; 466 cure = 0; 467 } 468 469 curs = (curs & 0xc0) | from; 470 cure = (cure & 0xe0) | to; 471 472 outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); 473 outb_p(curs, vga_video_port_val); 474 outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); 475 outb_p(cure, vga_video_port_val); 476 raw_spin_unlock_irqrestore(&vga_lock, flags); 477 } 478 479 static void vgacon_cursor(struct vc_data *c, int mode) 480 { 481 if (c->vc_mode != KD_TEXT) 482 return; 483 484 vgacon_restore_screen(c); 485 486 switch (mode) { 487 case CM_ERASE: 488 write_vga(14, (c->vc_pos - vga_vram_base) / 2); 489 if (vga_video_type >= VIDEO_TYPE_VGAC) 490 vgacon_set_cursor_size(c->state.x, 31, 30); 491 else 492 vgacon_set_cursor_size(c->state.x, 31, 31); 493 break; 494 495 case CM_MOVE: 496 case CM_DRAW: 497 write_vga(14, (c->vc_pos - vga_vram_base) / 2); 498 switch (CUR_SIZE(c->vc_cursor_type)) { 499 case CUR_UNDERLINE: 500 vgacon_set_cursor_size(c->state.x, 501 c->vc_cell_height - 502 (c->vc_cell_height < 503 10 ? 2 : 3), 504 c->vc_cell_height - 505 (c->vc_cell_height < 506 10 ? 1 : 2)); 507 break; 508 case CUR_TWO_THIRDS: 509 vgacon_set_cursor_size(c->state.x, 510 c->vc_cell_height / 3, 511 c->vc_cell_height - 512 (c->vc_cell_height < 513 10 ? 1 : 2)); 514 break; 515 case CUR_LOWER_THIRD: 516 vgacon_set_cursor_size(c->state.x, 517 (c->vc_cell_height * 2) / 3, 518 c->vc_cell_height - 519 (c->vc_cell_height < 520 10 ? 1 : 2)); 521 break; 522 case CUR_LOWER_HALF: 523 vgacon_set_cursor_size(c->state.x, 524 c->vc_cell_height / 2, 525 c->vc_cell_height - 526 (c->vc_cell_height < 527 10 ? 1 : 2)); 528 break; 529 case CUR_NONE: 530 if (vga_video_type >= VIDEO_TYPE_VGAC) 531 vgacon_set_cursor_size(c->state.x, 31, 30); 532 else 533 vgacon_set_cursor_size(c->state.x, 31, 31); 534 break; 535 default: 536 vgacon_set_cursor_size(c->state.x, 1, 537 c->vc_cell_height); 538 break; 539 } 540 break; 541 } 542 } 543 544 static int vgacon_doresize(struct vc_data *c, 545 unsigned int width, unsigned int height) 546 { 547 unsigned long flags; 548 unsigned int scanlines = height * c->vc_cell_height; 549 u8 scanlines_lo = 0, r7 = 0, vsync_end = 0, mode, max_scan; 550 551 raw_spin_lock_irqsave(&vga_lock, flags); 552 553 vgacon_xres = width * VGA_FONTWIDTH; 554 vgacon_yres = height * c->vc_cell_height; 555 if (vga_video_type >= VIDEO_TYPE_VGAC) { 556 outb_p(VGA_CRTC_MAX_SCAN, vga_video_port_reg); 557 max_scan = inb_p(vga_video_port_val); 558 559 if (max_scan & 0x80) 560 scanlines <<= 1; 561 562 outb_p(VGA_CRTC_MODE, vga_video_port_reg); 563 mode = inb_p(vga_video_port_val); 564 565 if (mode & 0x04) 566 scanlines >>= 1; 567 568 scanlines -= 1; 569 scanlines_lo = scanlines & 0xff; 570 571 outb_p(VGA_CRTC_OVERFLOW, vga_video_port_reg); 572 r7 = inb_p(vga_video_port_val) & ~0x42; 573 574 if (scanlines & 0x100) 575 r7 |= 0x02; 576 if (scanlines & 0x200) 577 r7 |= 0x40; 578 579 /* deprotect registers */ 580 outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg); 581 vsync_end = inb_p(vga_video_port_val); 582 outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg); 583 outb_p(vsync_end & ~0x80, vga_video_port_val); 584 } 585 586 outb_p(VGA_CRTC_H_DISP, vga_video_port_reg); 587 outb_p(width - 1, vga_video_port_val); 588 outb_p(VGA_CRTC_OFFSET, vga_video_port_reg); 589 outb_p(width >> 1, vga_video_port_val); 590 591 if (vga_video_type >= VIDEO_TYPE_VGAC) { 592 outb_p(VGA_CRTC_V_DISP_END, vga_video_port_reg); 593 outb_p(scanlines_lo, vga_video_port_val); 594 outb_p(VGA_CRTC_OVERFLOW, vga_video_port_reg); 595 outb_p(r7,vga_video_port_val); 596 597 /* reprotect registers */ 598 outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg); 599 outb_p(vsync_end, vga_video_port_val); 600 } 601 602 raw_spin_unlock_irqrestore(&vga_lock, flags); 603 return 0; 604 } 605 606 static int vgacon_switch(struct vc_data *c) 607 { 608 int x = c->vc_cols * VGA_FONTWIDTH; 609 int y = c->vc_rows * c->vc_cell_height; 610 int rows = screen_info.orig_video_lines * vga_default_font_height/ 611 c->vc_cell_height; 612 /* 613 * We need to save screen size here as it's the only way 614 * we can spot the screen has been resized and we need to 615 * set size of freshly allocated screens ourselves. 616 */ 617 vga_video_num_columns = c->vc_cols; 618 vga_video_num_lines = c->vc_rows; 619 620 /* We can only copy out the size of the video buffer here, 621 * otherwise we get into VGA BIOS */ 622 623 if (!vga_is_gfx) { 624 scr_memcpyw((u16 *) c->vc_origin, (u16 *) c->vc_screenbuf, 625 c->vc_screenbuf_size > vga_vram_size ? 626 vga_vram_size : c->vc_screenbuf_size); 627 628 if ((vgacon_xres != x || vgacon_yres != y) && 629 (!(vga_video_num_columns % 2) && 630 vga_video_num_columns <= screen_info.orig_video_cols && 631 vga_video_num_lines <= rows)) 632 vgacon_doresize(c, c->vc_cols, c->vc_rows); 633 } 634 635 return 0; /* Redrawing not needed */ 636 } 637 638 static void vga_set_palette(struct vc_data *vc, const unsigned char *table) 639 { 640 int i, j; 641 642 vga_w(vgastate.vgabase, VGA_PEL_MSK, 0xff); 643 for (i = j = 0; i < 16; i++) { 644 vga_w(vgastate.vgabase, VGA_PEL_IW, table[i]); 645 vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2); 646 vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2); 647 vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2); 648 } 649 } 650 651 static void vgacon_set_palette(struct vc_data *vc, const unsigned char *table) 652 { 653 if (vga_video_type != VIDEO_TYPE_VGAC || vga_palette_blanked 654 || !con_is_visible(vc)) 655 return; 656 vga_set_palette(vc, table); 657 } 658 659 /* structure holding original VGA register settings */ 660 static struct { 661 unsigned char SeqCtrlIndex; /* Sequencer Index reg. */ 662 unsigned char CrtCtrlIndex; /* CRT-Contr. Index reg. */ 663 unsigned char CrtMiscIO; /* Miscellaneous register */ 664 unsigned char HorizontalTotal; /* CRT-Controller:00h */ 665 unsigned char HorizDisplayEnd; /* CRT-Controller:01h */ 666 unsigned char StartHorizRetrace; /* CRT-Controller:04h */ 667 unsigned char EndHorizRetrace; /* CRT-Controller:05h */ 668 unsigned char Overflow; /* CRT-Controller:07h */ 669 unsigned char StartVertRetrace; /* CRT-Controller:10h */ 670 unsigned char EndVertRetrace; /* CRT-Controller:11h */ 671 unsigned char ModeControl; /* CRT-Controller:17h */ 672 unsigned char ClockingMode; /* Seq-Controller:01h */ 673 } vga_state; 674 675 static void vga_vesa_blank(struct vgastate *state, int mode) 676 { 677 /* save original values of VGA controller registers */ 678 if (!vga_vesa_blanked) { 679 raw_spin_lock_irq(&vga_lock); 680 vga_state.SeqCtrlIndex = vga_r(state->vgabase, VGA_SEQ_I); 681 vga_state.CrtCtrlIndex = inb_p(vga_video_port_reg); 682 vga_state.CrtMiscIO = vga_r(state->vgabase, VGA_MIS_R); 683 raw_spin_unlock_irq(&vga_lock); 684 685 outb_p(0x00, vga_video_port_reg); /* HorizontalTotal */ 686 vga_state.HorizontalTotal = inb_p(vga_video_port_val); 687 outb_p(0x01, vga_video_port_reg); /* HorizDisplayEnd */ 688 vga_state.HorizDisplayEnd = inb_p(vga_video_port_val); 689 outb_p(0x04, vga_video_port_reg); /* StartHorizRetrace */ 690 vga_state.StartHorizRetrace = inb_p(vga_video_port_val); 691 outb_p(0x05, vga_video_port_reg); /* EndHorizRetrace */ 692 vga_state.EndHorizRetrace = inb_p(vga_video_port_val); 693 outb_p(0x07, vga_video_port_reg); /* Overflow */ 694 vga_state.Overflow = inb_p(vga_video_port_val); 695 outb_p(0x10, vga_video_port_reg); /* StartVertRetrace */ 696 vga_state.StartVertRetrace = inb_p(vga_video_port_val); 697 outb_p(0x11, vga_video_port_reg); /* EndVertRetrace */ 698 vga_state.EndVertRetrace = inb_p(vga_video_port_val); 699 outb_p(0x17, vga_video_port_reg); /* ModeControl */ 700 vga_state.ModeControl = inb_p(vga_video_port_val); 701 vga_state.ClockingMode = vga_rseq(state->vgabase, VGA_SEQ_CLOCK_MODE); 702 } 703 704 /* assure that video is enabled */ 705 /* "0x20" is VIDEO_ENABLE_bit in register 01 of sequencer */ 706 raw_spin_lock_irq(&vga_lock); 707 vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, vga_state.ClockingMode | 0x20); 708 709 /* test for vertical retrace in process.... */ 710 if ((vga_state.CrtMiscIO & 0x80) == 0x80) 711 vga_w(state->vgabase, VGA_MIS_W, vga_state.CrtMiscIO & 0xEF); 712 713 /* 714 * Set <End of vertical retrace> to minimum (0) and 715 * <Start of vertical Retrace> to maximum (incl. overflow) 716 * Result: turn off vertical sync (VSync) pulse. 717 */ 718 if (mode & VESA_VSYNC_SUSPEND) { 719 outb_p(0x10, vga_video_port_reg); /* StartVertRetrace */ 720 outb_p(0xff, vga_video_port_val); /* maximum value */ 721 outb_p(0x11, vga_video_port_reg); /* EndVertRetrace */ 722 outb_p(0x40, vga_video_port_val); /* minimum (bits 0..3) */ 723 outb_p(0x07, vga_video_port_reg); /* Overflow */ 724 outb_p(vga_state.Overflow | 0x84, vga_video_port_val); /* bits 9,10 of vert. retrace */ 725 } 726 727 if (mode & VESA_HSYNC_SUSPEND) { 728 /* 729 * Set <End of horizontal retrace> to minimum (0) and 730 * <Start of horizontal Retrace> to maximum 731 * Result: turn off horizontal sync (HSync) pulse. 732 */ 733 outb_p(0x04, vga_video_port_reg); /* StartHorizRetrace */ 734 outb_p(0xff, vga_video_port_val); /* maximum */ 735 outb_p(0x05, vga_video_port_reg); /* EndHorizRetrace */ 736 outb_p(0x00, vga_video_port_val); /* minimum (0) */ 737 } 738 739 /* restore both index registers */ 740 vga_w(state->vgabase, VGA_SEQ_I, vga_state.SeqCtrlIndex); 741 outb_p(vga_state.CrtCtrlIndex, vga_video_port_reg); 742 raw_spin_unlock_irq(&vga_lock); 743 } 744 745 static void vga_vesa_unblank(struct vgastate *state) 746 { 747 /* restore original values of VGA controller registers */ 748 raw_spin_lock_irq(&vga_lock); 749 vga_w(state->vgabase, VGA_MIS_W, vga_state.CrtMiscIO); 750 751 outb_p(0x00, vga_video_port_reg); /* HorizontalTotal */ 752 outb_p(vga_state.HorizontalTotal, vga_video_port_val); 753 outb_p(0x01, vga_video_port_reg); /* HorizDisplayEnd */ 754 outb_p(vga_state.HorizDisplayEnd, vga_video_port_val); 755 outb_p(0x04, vga_video_port_reg); /* StartHorizRetrace */ 756 outb_p(vga_state.StartHorizRetrace, vga_video_port_val); 757 outb_p(0x05, vga_video_port_reg); /* EndHorizRetrace */ 758 outb_p(vga_state.EndHorizRetrace, vga_video_port_val); 759 outb_p(0x07, vga_video_port_reg); /* Overflow */ 760 outb_p(vga_state.Overflow, vga_video_port_val); 761 outb_p(0x10, vga_video_port_reg); /* StartVertRetrace */ 762 outb_p(vga_state.StartVertRetrace, vga_video_port_val); 763 outb_p(0x11, vga_video_port_reg); /* EndVertRetrace */ 764 outb_p(vga_state.EndVertRetrace, vga_video_port_val); 765 outb_p(0x17, vga_video_port_reg); /* ModeControl */ 766 outb_p(vga_state.ModeControl, vga_video_port_val); 767 /* ClockingMode */ 768 vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, vga_state.ClockingMode); 769 770 /* restore index/control registers */ 771 vga_w(state->vgabase, VGA_SEQ_I, vga_state.SeqCtrlIndex); 772 outb_p(vga_state.CrtCtrlIndex, vga_video_port_reg); 773 raw_spin_unlock_irq(&vga_lock); 774 } 775 776 static void vga_pal_blank(struct vgastate *state) 777 { 778 int i; 779 780 vga_w(state->vgabase, VGA_PEL_MSK, 0xff); 781 for (i = 0; i < 16; i++) { 782 vga_w(state->vgabase, VGA_PEL_IW, i); 783 vga_w(state->vgabase, VGA_PEL_D, 0); 784 vga_w(state->vgabase, VGA_PEL_D, 0); 785 vga_w(state->vgabase, VGA_PEL_D, 0); 786 } 787 } 788 789 static int vgacon_blank(struct vc_data *c, int blank, int mode_switch) 790 { 791 switch (blank) { 792 case 0: /* Unblank */ 793 if (vga_vesa_blanked) { 794 vga_vesa_unblank(&vgastate); 795 vga_vesa_blanked = 0; 796 } 797 if (vga_palette_blanked) { 798 vga_set_palette(c, color_table); 799 vga_palette_blanked = false; 800 return 0; 801 } 802 vga_is_gfx = false; 803 /* Tell console.c that it has to restore the screen itself */ 804 return 1; 805 case 1: /* Normal blanking */ 806 case -1: /* Obsolete */ 807 if (!mode_switch && vga_video_type == VIDEO_TYPE_VGAC) { 808 vga_pal_blank(&vgastate); 809 vga_palette_blanked = true; 810 return 0; 811 } 812 vgacon_set_origin(c); 813 scr_memsetw((void *) vga_vram_base, BLANK, 814 c->vc_screenbuf_size); 815 if (mode_switch) 816 vga_is_gfx = true; 817 return 1; 818 default: /* VESA blanking */ 819 if (vga_video_type == VIDEO_TYPE_VGAC) { 820 vga_vesa_blank(&vgastate, blank - 1); 821 vga_vesa_blanked = blank; 822 } 823 return 0; 824 } 825 } 826 827 /* 828 * PIO_FONT support. 829 * 830 * The font loading code goes back to the codepage package by 831 * Joel Hoffman (joel@wam.umd.edu). (He reports that the original 832 * reference is: "From: p. 307 of _Programmer's Guide to PC & PS/2 833 * Video Systems_ by Richard Wilton. 1987. Microsoft Press".) 834 * 835 * Change for certain monochrome monitors by Yury Shevchuck 836 * (sizif@botik.yaroslavl.su). 837 */ 838 839 #define colourmap 0xa0000 840 /* Pauline Middelink <middelin@polyware.iaf.nl> reports that we 841 should use 0xA0000 for the bwmap as well.. */ 842 #define blackwmap 0xa0000 843 #define cmapsz 8192 844 845 static int vgacon_do_font_op(struct vgastate *state, char *arg, int set, 846 bool ch512) 847 { 848 unsigned short video_port_status = vga_video_port_reg + 6; 849 int font_select = 0x00, beg, i; 850 char *charmap; 851 bool clear_attribs = false; 852 if (vga_video_type != VIDEO_TYPE_EGAM) { 853 charmap = (char *) VGA_MAP_MEM(colourmap, 0); 854 beg = 0x0e; 855 } else { 856 charmap = (char *) VGA_MAP_MEM(blackwmap, 0); 857 beg = 0x0a; 858 } 859 860 /* 861 * All fonts are loaded in slot 0 (0:1 for 512 ch) 862 */ 863 864 if (!arg) 865 return -EINVAL; /* Return to default font not supported */ 866 867 font_select = ch512 ? 0x04 : 0x00; 868 869 raw_spin_lock_irq(&vga_lock); 870 /* First, the Sequencer */ 871 vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x1); 872 /* CPU writes only to map 2 */ 873 vga_wseq(state->vgabase, VGA_SEQ_PLANE_WRITE, 0x04); 874 /* Sequential addressing */ 875 vga_wseq(state->vgabase, VGA_SEQ_MEMORY_MODE, 0x07); 876 /* Clear synchronous reset */ 877 vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03); 878 879 /* Now, the graphics controller, select map 2 */ 880 vga_wgfx(state->vgabase, VGA_GFX_PLANE_READ, 0x02); 881 /* disable odd-even addressing */ 882 vga_wgfx(state->vgabase, VGA_GFX_MODE, 0x00); 883 /* map start at A000:0000 */ 884 vga_wgfx(state->vgabase, VGA_GFX_MISC, 0x00); 885 raw_spin_unlock_irq(&vga_lock); 886 887 if (arg) { 888 if (set) 889 for (i = 0; i < cmapsz; i++) { 890 vga_writeb(arg[i], charmap + i); 891 cond_resched(); 892 } 893 else 894 for (i = 0; i < cmapsz; i++) { 895 arg[i] = vga_readb(charmap + i); 896 cond_resched(); 897 } 898 899 /* 900 * In 512-character mode, the character map is not contiguous if 901 * we want to remain EGA compatible -- which we do 902 */ 903 904 if (ch512) { 905 charmap += 2 * cmapsz; 906 arg += cmapsz; 907 if (set) 908 for (i = 0; i < cmapsz; i++) { 909 vga_writeb(arg[i], charmap + i); 910 cond_resched(); 911 } 912 else 913 for (i = 0; i < cmapsz; i++) { 914 arg[i] = vga_readb(charmap + i); 915 cond_resched(); 916 } 917 } 918 } 919 920 raw_spin_lock_irq(&vga_lock); 921 /* First, the sequencer, Synchronous reset */ 922 vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x01); 923 /* CPU writes to maps 0 and 1 */ 924 vga_wseq(state->vgabase, VGA_SEQ_PLANE_WRITE, 0x03); 925 /* odd-even addressing */ 926 vga_wseq(state->vgabase, VGA_SEQ_MEMORY_MODE, 0x03); 927 /* Character Map Select */ 928 if (set) 929 vga_wseq(state->vgabase, VGA_SEQ_CHARACTER_MAP, font_select); 930 /* clear synchronous reset */ 931 vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03); 932 933 /* Now, the graphics controller, select map 0 for CPU */ 934 vga_wgfx(state->vgabase, VGA_GFX_PLANE_READ, 0x00); 935 /* enable even-odd addressing */ 936 vga_wgfx(state->vgabase, VGA_GFX_MODE, 0x10); 937 /* map starts at b800:0 or b000:0 */ 938 vga_wgfx(state->vgabase, VGA_GFX_MISC, beg); 939 940 /* if 512 char mode is already enabled don't re-enable it. */ 941 if ((set) && (ch512 != vga_512_chars)) { 942 vga_512_chars = ch512; 943 /* 256-char: enable intensity bit 944 512-char: disable intensity bit */ 945 inb_p(video_port_status); /* clear address flip-flop */ 946 /* color plane enable register */ 947 vga_wattr(state->vgabase, VGA_ATC_PLANE_ENABLE, ch512 ? 0x07 : 0x0f); 948 /* Wilton (1987) mentions the following; I don't know what 949 it means, but it works, and it appears necessary */ 950 inb_p(video_port_status); 951 vga_wattr(state->vgabase, VGA_AR_ENABLE_DISPLAY, 0); 952 clear_attribs = true; 953 } 954 raw_spin_unlock_irq(&vga_lock); 955 956 if (clear_attribs) { 957 for (i = 0; i < MAX_NR_CONSOLES; i++) { 958 struct vc_data *c = vc_cons[i].d; 959 if (c && c->vc_sw == &vga_con) { 960 /* force hi font mask to 0, so we always clear 961 the bit on either transition */ 962 c->vc_hi_font_mask = 0x00; 963 clear_buffer_attributes(c); 964 c->vc_hi_font_mask = ch512 ? 0x0800 : 0; 965 } 966 } 967 } 968 return 0; 969 } 970 971 /* 972 * Adjust the screen to fit a font of a certain height 973 */ 974 static int vgacon_adjust_height(struct vc_data *vc, unsigned fontheight) 975 { 976 unsigned char ovr, vde, fsr; 977 int rows, maxscan, i; 978 979 rows = vc->vc_scan_lines / fontheight; /* Number of video rows we end up with */ 980 maxscan = rows * fontheight - 1; /* Scan lines to actually display-1 */ 981 982 /* Reprogram the CRTC for the new font size 983 Note: the attempt to read the overflow register will fail 984 on an EGA, but using 0xff for the previous value appears to 985 be OK for EGA text modes in the range 257-512 scan lines, so I 986 guess we don't need to worry about it. 987 988 The same applies for the spill bits in the font size and cursor 989 registers; they are write-only on EGA, but it appears that they 990 are all don't care bits on EGA, so I guess it doesn't matter. */ 991 992 raw_spin_lock_irq(&vga_lock); 993 outb_p(0x07, vga_video_port_reg); /* CRTC overflow register */ 994 ovr = inb_p(vga_video_port_val); 995 outb_p(0x09, vga_video_port_reg); /* Font size register */ 996 fsr = inb_p(vga_video_port_val); 997 raw_spin_unlock_irq(&vga_lock); 998 999 vde = maxscan & 0xff; /* Vertical display end reg */ 1000 ovr = (ovr & 0xbd) + /* Overflow register */ 1001 ((maxscan & 0x100) >> 7) + ((maxscan & 0x200) >> 3); 1002 fsr = (fsr & 0xe0) + (fontheight - 1); /* Font size register */ 1003 1004 raw_spin_lock_irq(&vga_lock); 1005 outb_p(0x07, vga_video_port_reg); /* CRTC overflow register */ 1006 outb_p(ovr, vga_video_port_val); 1007 outb_p(0x09, vga_video_port_reg); /* Font size */ 1008 outb_p(fsr, vga_video_port_val); 1009 outb_p(0x12, vga_video_port_reg); /* Vertical display limit */ 1010 outb_p(vde, vga_video_port_val); 1011 raw_spin_unlock_irq(&vga_lock); 1012 vga_video_font_height = fontheight; 1013 1014 for (i = 0; i < MAX_NR_CONSOLES; i++) { 1015 struct vc_data *c = vc_cons[i].d; 1016 1017 if (c && c->vc_sw == &vga_con) { 1018 if (con_is_visible(c)) { 1019 /* void size to cause regs to be rewritten */ 1020 cursor_size_lastfrom = 0; 1021 cursor_size_lastto = 0; 1022 c->vc_sw->con_cursor(c, CM_DRAW); 1023 } 1024 c->vc_font.height = c->vc_cell_height = fontheight; 1025 vc_resize(c, 0, rows); /* Adjust console size */ 1026 } 1027 } 1028 return 0; 1029 } 1030 1031 static int vgacon_font_set(struct vc_data *c, struct console_font *font, 1032 unsigned int flags) 1033 { 1034 unsigned charcount = font->charcount; 1035 int rc; 1036 1037 if (vga_video_type < VIDEO_TYPE_EGAM) 1038 return -EINVAL; 1039 1040 if (font->width != VGA_FONTWIDTH || 1041 (charcount != 256 && charcount != 512)) 1042 return -EINVAL; 1043 1044 rc = vgacon_do_font_op(&vgastate, font->data, 1, charcount == 512); 1045 if (rc) 1046 return rc; 1047 1048 if (!(flags & KD_FONT_FLAG_DONT_RECALC)) 1049 rc = vgacon_adjust_height(c, font->height); 1050 return rc; 1051 } 1052 1053 static int vgacon_font_get(struct vc_data *c, struct console_font *font) 1054 { 1055 if (vga_video_type < VIDEO_TYPE_EGAM) 1056 return -EINVAL; 1057 1058 font->width = VGA_FONTWIDTH; 1059 font->height = c->vc_font.height; 1060 font->charcount = vga_512_chars ? 512 : 256; 1061 if (!font->data) 1062 return 0; 1063 return vgacon_do_font_op(&vgastate, font->data, 0, vga_512_chars); 1064 } 1065 1066 static int vgacon_resize(struct vc_data *c, unsigned int width, 1067 unsigned int height, unsigned int user) 1068 { 1069 if ((width << 1) * height > vga_vram_size) 1070 return -EINVAL; 1071 1072 if (user) { 1073 /* 1074 * Ho ho! Someone (svgatextmode, eh?) may have reprogrammed 1075 * the video mode! Set the new defaults then and go away. 1076 */ 1077 screen_info.orig_video_cols = width; 1078 screen_info.orig_video_lines = height; 1079 vga_default_font_height = c->vc_cell_height; 1080 return 0; 1081 } 1082 if (width % 2 || width > screen_info.orig_video_cols || 1083 height > (screen_info.orig_video_lines * vga_default_font_height)/ 1084 c->vc_cell_height) 1085 return -EINVAL; 1086 1087 if (con_is_visible(c) && !vga_is_gfx) /* who knows */ 1088 vgacon_doresize(c, width, height); 1089 return 0; 1090 } 1091 1092 static int vgacon_set_origin(struct vc_data *c) 1093 { 1094 if (vga_is_gfx || /* We don't play origin tricks in graphic modes */ 1095 (console_blanked && !vga_palette_blanked)) /* Nor we write to blanked screens */ 1096 return 0; 1097 c->vc_origin = c->vc_visible_origin = vga_vram_base; 1098 vga_set_mem_top(c); 1099 vga_rolled_over = 0; 1100 return 1; 1101 } 1102 1103 static void vgacon_save_screen(struct vc_data *c) 1104 { 1105 static int vga_bootup_console = 0; 1106 1107 if (!vga_bootup_console) { 1108 /* This is a gross hack, but here is the only place we can 1109 * set bootup console parameters without messing up generic 1110 * console initialization routines. 1111 */ 1112 vga_bootup_console = 1; 1113 c->state.x = screen_info.orig_x; 1114 c->state.y = screen_info.orig_y; 1115 } 1116 1117 /* We can't copy in more than the size of the video buffer, 1118 * or we'll be copying in VGA BIOS */ 1119 1120 if (!vga_is_gfx) 1121 scr_memcpyw((u16 *) c->vc_screenbuf, (u16 *) c->vc_origin, 1122 c->vc_screenbuf_size > vga_vram_size ? vga_vram_size : c->vc_screenbuf_size); 1123 } 1124 1125 static bool vgacon_scroll(struct vc_data *c, unsigned int t, unsigned int b, 1126 enum con_scroll dir, unsigned int lines) 1127 { 1128 unsigned long oldo; 1129 unsigned int delta; 1130 1131 if (t || b != c->vc_rows || vga_is_gfx || c->vc_mode != KD_TEXT) 1132 return false; 1133 1134 if (!vga_hardscroll_enabled || lines >= c->vc_rows / 2) 1135 return false; 1136 1137 vgacon_restore_screen(c); 1138 oldo = c->vc_origin; 1139 delta = lines * c->vc_size_row; 1140 if (dir == SM_UP) { 1141 if (c->vc_scr_end + delta >= vga_vram_end) { 1142 scr_memcpyw((u16 *) vga_vram_base, 1143 (u16 *) (oldo + delta), 1144 c->vc_screenbuf_size - delta); 1145 c->vc_origin = vga_vram_base; 1146 vga_rolled_over = oldo - vga_vram_base; 1147 } else 1148 c->vc_origin += delta; 1149 scr_memsetw((u16 *) (c->vc_origin + c->vc_screenbuf_size - 1150 delta), c->vc_video_erase_char, 1151 delta); 1152 } else { 1153 if (oldo - delta < vga_vram_base) { 1154 scr_memmovew((u16 *) (vga_vram_end - 1155 c->vc_screenbuf_size + 1156 delta), (u16 *) oldo, 1157 c->vc_screenbuf_size - delta); 1158 c->vc_origin = vga_vram_end - c->vc_screenbuf_size; 1159 vga_rolled_over = 0; 1160 } else 1161 c->vc_origin -= delta; 1162 c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; 1163 scr_memsetw((u16 *) (c->vc_origin), c->vc_video_erase_char, 1164 delta); 1165 } 1166 c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; 1167 c->vc_visible_origin = c->vc_origin; 1168 vga_set_mem_top(c); 1169 c->vc_pos = (c->vc_pos - oldo) + c->vc_origin; 1170 return true; 1171 } 1172 1173 /* 1174 * The console `switch' structure for the VGA based console 1175 */ 1176 1177 static void vgacon_clear(struct vc_data *vc, int sy, int sx, int height, 1178 int width) { } 1179 static void vgacon_putc(struct vc_data *vc, int c, int ypos, int xpos) { } 1180 static void vgacon_putcs(struct vc_data *vc, const unsigned short *s, 1181 int count, int ypos, int xpos) { } 1182 1183 const struct consw vga_con = { 1184 .owner = THIS_MODULE, 1185 .con_startup = vgacon_startup, 1186 .con_init = vgacon_init, 1187 .con_deinit = vgacon_deinit, 1188 .con_clear = vgacon_clear, 1189 .con_putc = vgacon_putc, 1190 .con_putcs = vgacon_putcs, 1191 .con_cursor = vgacon_cursor, 1192 .con_scroll = vgacon_scroll, 1193 .con_switch = vgacon_switch, 1194 .con_blank = vgacon_blank, 1195 .con_font_set = vgacon_font_set, 1196 .con_font_get = vgacon_font_get, 1197 .con_resize = vgacon_resize, 1198 .con_set_palette = vgacon_set_palette, 1199 .con_scrolldelta = vgacon_scrolldelta, 1200 .con_set_origin = vgacon_set_origin, 1201 .con_save_screen = vgacon_save_screen, 1202 .con_build_attr = vgacon_build_attr, 1203 .con_invert_region = vgacon_invert_region, 1204 }; 1205 EXPORT_SYMBOL(vga_con); 1206 1207 MODULE_LICENSE("GPL"); 1208