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Commit | Line | Data |
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1da177e4 LT |
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 | ||
1da177e4 LT |
36 | #include <linux/module.h> |
37 | #include <linux/types.h> | |
1da177e4 LT |
38 | #include <linux/fs.h> |
39 | #include <linux/kernel.h> | |
1da177e4 LT |
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> | |
0ab3691f | 45 | #include <linux/sched.h> |
1da177e4 LT |
46 | #include <linux/selection.h> |
47 | #include <linux/spinlock.h> | |
48 | #include <linux/ioport.h> | |
49 | #include <linux/init.h> | |
894673ee | 50 | #include <linux/screen_info.h> |
1da177e4 LT |
51 | #include <video/vga.h> |
52 | #include <asm/io.h> | |
53 | ||
6b2c1800 | 54 | static DEFINE_RAW_SPINLOCK(vga_lock); |
1da177e4 LT |
55 | static int cursor_size_lastfrom; |
56 | static int cursor_size_lastto; | |
53dbb26d AD |
57 | static u32 vgacon_xres; |
58 | static u32 vgacon_yres; | |
89f0244e | 59 | static struct vgastate vgastate; |
1da177e4 LT |
60 | |
61 | #define BLANK 0x0020 | |
62 | ||
63 | #define CAN_LOAD_EGA_FONTS /* undefine if the user must not do this */ | |
64 | #define CAN_LOAD_PALETTE /* undefine if the user must not do this */ | |
65 | ||
66 | /* You really do _NOT_ want to define this, unless you have buggy | |
67 | * Trident VGA which will resize cursor when moving it between column | |
68 | * 15 & 16. If you define this and your VGA is OK, inverse bug will | |
69 | * appear. | |
70 | */ | |
71 | #undef TRIDENT_GLITCH | |
53dbb26d | 72 | #define VGA_FONTWIDTH 8 /* VGA does not support fontwidths != 8 */ |
1da177e4 LT |
73 | /* |
74 | * Interface used by the world | |
75 | */ | |
76 | ||
77 | static const char *vgacon_startup(void); | |
78 | static void vgacon_init(struct vc_data *c, int init); | |
79 | static void vgacon_deinit(struct vc_data *c); | |
80 | static void vgacon_cursor(struct vc_data *c, int mode); | |
81 | static int vgacon_switch(struct vc_data *c); | |
82 | static int vgacon_blank(struct vc_data *c, int blank, int mode_switch); | |
97293de9 | 83 | static void vgacon_scrolldelta(struct vc_data *c, int lines); |
1da177e4 LT |
84 | static int vgacon_set_origin(struct vc_data *c); |
85 | static void vgacon_save_screen(struct vc_data *c); | |
1da177e4 | 86 | static void vgacon_invert_region(struct vc_data *c, u16 * p, int count); |
e4bdab70 | 87 | static struct uni_pagedir *vgacon_uni_pagedir; |
0f2893f0 | 88 | static int vgacon_refcount; |
1da177e4 | 89 | |
1da177e4 | 90 | /* Description of the hardware situation */ |
96fd9554 | 91 | static bool vga_init_done; |
0128beee HD |
92 | static unsigned long vga_vram_base __read_mostly; /* Base of video memory */ |
93 | static unsigned long vga_vram_end __read_mostly; /* End of video memory */ | |
94 | static unsigned int vga_vram_size __read_mostly; /* Size of video memory */ | |
95 | static u16 vga_video_port_reg __read_mostly; /* Video register select port */ | |
96 | static u16 vga_video_port_val __read_mostly; /* Video register value port */ | |
97 | static unsigned int vga_video_num_columns; /* Number of text columns */ | |
98 | static unsigned int vga_video_num_lines; /* Number of text lines */ | |
96fd9554 | 99 | static bool vga_can_do_color; /* Do we support colors? */ |
0128beee HD |
100 | static unsigned int vga_default_font_height __read_mostly; /* Height of default screen font */ |
101 | static unsigned char vga_video_type __read_mostly; /* Card type */ | |
96fd9554 | 102 | static bool vga_font_is_default = true; |
1da177e4 | 103 | static int vga_vesa_blanked; |
96fd9554 JS |
104 | static bool vga_palette_blanked; |
105 | static bool vga_is_gfx; | |
106 | static bool vga_512_chars; | |
1da177e4 | 107 | static int vga_video_font_height; |
0128beee HD |
108 | static int vga_scan_lines __read_mostly; |
109 | static unsigned int vga_rolled_over; | |
1da177e4 | 110 | |
96fd9554 JS |
111 | static bool vgacon_text_mode_force; |
112 | static bool vga_hardscroll_enabled; | |
113 | static bool vga_hardscroll_user_enable = true; | |
f453ba04 DA |
114 | |
115 | bool vgacon_text_force(void) | |
116 | { | |
96fd9554 | 117 | return vgacon_text_mode_force; |
f453ba04 DA |
118 | } |
119 | EXPORT_SYMBOL(vgacon_text_force); | |
120 | ||
121 | static int __init text_mode(char *str) | |
122 | { | |
96fd9554 | 123 | vgacon_text_mode_force = true; |
f453ba04 DA |
124 | return 1; |
125 | } | |
126 | ||
127 | /* force text mode - used by kernel modesetting */ | |
128 | __setup("nomodeset", text_mode); | |
129 | ||
1da177e4 LT |
130 | static int __init no_scroll(char *str) |
131 | { | |
132 | /* | |
133 | * Disabling scrollback is required for the Braillex ib80-piezo | |
134 | * Braille reader made by F.H. Papenmeier (Germany). | |
135 | * Use the "no-scroll" bootflag. | |
136 | */ | |
96fd9554 | 137 | vga_hardscroll_user_enable = vga_hardscroll_enabled = false; |
1da177e4 LT |
138 | return 1; |
139 | } | |
140 | ||
141 | __setup("no-scroll", no_scroll); | |
142 | ||
143 | /* | |
144 | * By replacing the four outb_p with two back to back outw, we can reduce | |
145 | * the window of opportunity to see text mislocated to the RHS of the | |
146 | * console during heavy scrolling activity. However there is the remote | |
147 | * possibility that some pre-dinosaur hardware won't like the back to back | |
148 | * I/O. Since the Xservers get away with it, we should be able to as well. | |
149 | */ | |
150 | static inline void write_vga(unsigned char reg, unsigned int val) | |
151 | { | |
152 | unsigned int v1, v2; | |
153 | unsigned long flags; | |
154 | ||
155 | /* | |
156 | * ddprintk might set the console position from interrupt | |
157 | * handlers, thus the write has to be IRQ-atomic. | |
158 | */ | |
6b2c1800 | 159 | raw_spin_lock_irqsave(&vga_lock, flags); |
1da177e4 LT |
160 | |
161 | #ifndef SLOW_VGA | |
162 | v1 = reg + (val & 0xff00); | |
163 | v2 = reg + 1 + ((val << 8) & 0xff00); | |
164 | outw(v1, vga_video_port_reg); | |
165 | outw(v2, vga_video_port_reg); | |
166 | #else | |
167 | outb_p(reg, vga_video_port_reg); | |
168 | outb_p(val >> 8, vga_video_port_val); | |
169 | outb_p(reg + 1, vga_video_port_reg); | |
170 | outb_p(val & 0xff, vga_video_port_val); | |
171 | #endif | |
6b2c1800 | 172 | raw_spin_unlock_irqrestore(&vga_lock, flags); |
1da177e4 LT |
173 | } |
174 | ||
15bdab95 AD |
175 | static inline void vga_set_mem_top(struct vc_data *c) |
176 | { | |
177 | write_vga(12, (c->vc_visible_origin - vga_vram_base) / 2); | |
178 | } | |
179 | ||
180 | #ifdef CONFIG_VGACON_SOFT_SCROLLBACK | |
15bdab95 AD |
181 | /* software scrollback */ |
182 | static void *vgacon_scrollback; | |
183 | static int vgacon_scrollback_tail; | |
184 | static int vgacon_scrollback_size; | |
185 | static int vgacon_scrollback_rows; | |
186 | static int vgacon_scrollback_cnt; | |
187 | static int vgacon_scrollback_cur; | |
188 | static int vgacon_scrollback_save; | |
189 | static int vgacon_scrollback_restore; | |
190 | ||
191 | static void vgacon_scrollback_init(int pitch) | |
192 | { | |
193 | int rows = CONFIG_VGACON_SOFT_SCROLLBACK_SIZE * 1024/pitch; | |
194 | ||
195 | if (vgacon_scrollback) { | |
196 | vgacon_scrollback_cnt = 0; | |
197 | vgacon_scrollback_tail = 0; | |
198 | vgacon_scrollback_cur = 0; | |
199 | vgacon_scrollback_rows = rows - 1; | |
200 | vgacon_scrollback_size = rows * pitch; | |
201 | } | |
202 | } | |
203 | ||
63b1dd07 | 204 | static void vgacon_scrollback_startup(void) |
15bdab95 | 205 | { |
b8ec7573 | 206 | vgacon_scrollback = kcalloc(CONFIG_VGACON_SOFT_SCROLLBACK_SIZE, 1024, GFP_NOWAIT); |
15bdab95 AD |
207 | vgacon_scrollback_init(vga_video_num_columns * 2); |
208 | } | |
209 | ||
210 | static void vgacon_scrollback_update(struct vc_data *c, int t, int count) | |
211 | { | |
212 | void *p; | |
213 | ||
214 | if (!vgacon_scrollback_size || c->vc_num != fg_console) | |
215 | return; | |
216 | ||
217 | p = (void *) (c->vc_origin + t * c->vc_size_row); | |
218 | ||
219 | while (count--) { | |
220 | scr_memcpyw(vgacon_scrollback + vgacon_scrollback_tail, | |
221 | p, c->vc_size_row); | |
222 | vgacon_scrollback_cnt++; | |
223 | p += c->vc_size_row; | |
224 | vgacon_scrollback_tail += c->vc_size_row; | |
225 | ||
226 | if (vgacon_scrollback_tail >= vgacon_scrollback_size) | |
227 | vgacon_scrollback_tail = 0; | |
228 | ||
229 | if (vgacon_scrollback_cnt > vgacon_scrollback_rows) | |
230 | vgacon_scrollback_cnt = vgacon_scrollback_rows; | |
231 | ||
232 | vgacon_scrollback_cur = vgacon_scrollback_cnt; | |
233 | } | |
234 | } | |
235 | ||
236 | static void vgacon_restore_screen(struct vc_data *c) | |
237 | { | |
238 | vgacon_scrollback_save = 0; | |
239 | ||
240 | if (!vga_is_gfx && !vgacon_scrollback_restore) { | |
241 | scr_memcpyw((u16 *) c->vc_origin, (u16 *) c->vc_screenbuf, | |
242 | c->vc_screenbuf_size > vga_vram_size ? | |
243 | vga_vram_size : c->vc_screenbuf_size); | |
244 | vgacon_scrollback_restore = 1; | |
245 | vgacon_scrollback_cur = vgacon_scrollback_cnt; | |
246 | } | |
247 | } | |
248 | ||
97293de9 | 249 | static void vgacon_scrolldelta(struct vc_data *c, int lines) |
15bdab95 | 250 | { |
5ab48409 | 251 | int start, end, count, soff; |
15bdab95 AD |
252 | |
253 | if (!lines) { | |
254 | c->vc_visible_origin = c->vc_origin; | |
255 | vga_set_mem_top(c); | |
97293de9 | 256 | return; |
15bdab95 AD |
257 | } |
258 | ||
259 | if (!vgacon_scrollback) | |
97293de9 | 260 | return; |
15bdab95 AD |
261 | |
262 | if (!vgacon_scrollback_save) { | |
263 | vgacon_cursor(c, CM_ERASE); | |
264 | vgacon_save_screen(c); | |
265 | vgacon_scrollback_save = 1; | |
266 | } | |
267 | ||
268 | vgacon_scrollback_restore = 0; | |
269 | start = vgacon_scrollback_cur + lines; | |
270 | end = start + abs(lines); | |
271 | ||
272 | if (start < 0) | |
273 | start = 0; | |
274 | ||
275 | if (start > vgacon_scrollback_cnt) | |
276 | start = vgacon_scrollback_cnt; | |
277 | ||
278 | if (end < 0) | |
279 | end = 0; | |
280 | ||
281 | if (end > vgacon_scrollback_cnt) | |
282 | end = vgacon_scrollback_cnt; | |
283 | ||
284 | vgacon_scrollback_cur = start; | |
285 | count = end - start; | |
286 | soff = vgacon_scrollback_tail - ((vgacon_scrollback_cnt - end) * | |
287 | c->vc_size_row); | |
288 | soff -= count * c->vc_size_row; | |
289 | ||
290 | if (soff < 0) | |
291 | soff += vgacon_scrollback_size; | |
292 | ||
293 | count = vgacon_scrollback_cnt - start; | |
294 | ||
295 | if (count > c->vc_rows) | |
296 | count = c->vc_rows; | |
297 | ||
c38182a7 MS |
298 | if (count) { |
299 | int copysize; | |
5ab48409 MS |
300 | |
301 | int diff = c->vc_rows - count; | |
302 | void *d = (void *) c->vc_origin; | |
303 | void *s = (void *) c->vc_screenbuf; | |
304 | ||
c38182a7 MS |
305 | count *= c->vc_size_row; |
306 | /* how much memory to end of buffer left? */ | |
307 | copysize = min(count, vgacon_scrollback_size - soff); | |
308 | scr_memcpyw(d, vgacon_scrollback + soff, copysize); | |
309 | d += copysize; | |
310 | count -= copysize; | |
311 | ||
312 | if (count) { | |
313 | scr_memcpyw(d, vgacon_scrollback, count); | |
314 | d += count; | |
315 | } | |
15bdab95 | 316 | |
c38182a7 MS |
317 | if (diff) |
318 | scr_memcpyw(d, s, diff * c->vc_size_row); | |
5ab48409 MS |
319 | } else |
320 | vgacon_cursor(c, CM_MOVE); | |
15bdab95 AD |
321 | } |
322 | #else | |
323 | #define vgacon_scrollback_startup(...) do { } while (0) | |
324 | #define vgacon_scrollback_init(...) do { } while (0) | |
325 | #define vgacon_scrollback_update(...) do { } while (0) | |
326 | ||
327 | static void vgacon_restore_screen(struct vc_data *c) | |
328 | { | |
329 | if (c->vc_origin != c->vc_visible_origin) | |
330 | vgacon_scrolldelta(c, 0); | |
331 | } | |
332 | ||
97293de9 | 333 | static void vgacon_scrolldelta(struct vc_data *c, int lines) |
15bdab95 | 334 | { |
35cc56f9 JS |
335 | vc_scrolldelta_helper(c, lines, vga_rolled_over, (void *)vga_vram_base, |
336 | vga_vram_size); | |
15bdab95 | 337 | vga_set_mem_top(c); |
15bdab95 AD |
338 | } |
339 | #endif /* CONFIG_VGACON_SOFT_SCROLLBACK */ | |
340 | ||
50ec42ed | 341 | static const char *vgacon_startup(void) |
1da177e4 LT |
342 | { |
343 | const char *display_desc = NULL; | |
344 | u16 saved1, saved2; | |
345 | volatile u16 *p; | |
346 | ||
554ec37a YH |
347 | if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB || |
348 | screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) { | |
1da177e4 LT |
349 | no_vga: |
350 | #ifdef CONFIG_DUMMY_CONSOLE | |
351 | conswitchp = &dummy_con; | |
352 | return conswitchp->con_startup(); | |
353 | #else | |
354 | return NULL; | |
355 | #endif | |
356 | } | |
357 | ||
30c82645 | 358 | /* boot_params.screen_info initialized? */ |
3ea33510 PA |
359 | if ((screen_info.orig_video_mode == 0) && |
360 | (screen_info.orig_video_lines == 0) && | |
361 | (screen_info.orig_video_cols == 0)) | |
a1a4849c GH |
362 | goto no_vga; |
363 | ||
1da177e4 | 364 | /* VGA16 modes are not handled by VGACON */ |
3ea33510 PA |
365 | if ((screen_info.orig_video_mode == 0x0D) || /* 320x200/4 */ |
366 | (screen_info.orig_video_mode == 0x0E) || /* 640x200/4 */ | |
367 | (screen_info.orig_video_mode == 0x10) || /* 640x350/4 */ | |
368 | (screen_info.orig_video_mode == 0x12) || /* 640x480/4 */ | |
369 | (screen_info.orig_video_mode == 0x6A)) /* 800x600/4 (VESA) */ | |
1da177e4 LT |
370 | goto no_vga; |
371 | ||
3ea33510 PA |
372 | vga_video_num_lines = screen_info.orig_video_lines; |
373 | vga_video_num_columns = screen_info.orig_video_cols; | |
89f0244e | 374 | vgastate.vgabase = NULL; |
1da177e4 | 375 | |
3ea33510 PA |
376 | if (screen_info.orig_video_mode == 7) { |
377 | /* Monochrome display */ | |
1da177e4 LT |
378 | vga_vram_base = 0xb0000; |
379 | vga_video_port_reg = VGA_CRT_IM; | |
380 | vga_video_port_val = VGA_CRT_DM; | |
3ea33510 | 381 | if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) { |
1da177e4 | 382 | static struct resource ega_console_resource = |
740e518e | 383 | { .name = "ega", .start = 0x3B0, .end = 0x3BF }; |
1da177e4 | 384 | vga_video_type = VIDEO_TYPE_EGAM; |
4f1bcaf0 | 385 | vga_vram_size = 0x8000; |
1da177e4 LT |
386 | display_desc = "EGA+"; |
387 | request_resource(&ioport_resource, | |
388 | &ega_console_resource); | |
389 | } else { | |
390 | static struct resource mda1_console_resource = | |
740e518e | 391 | { .name = "mda", .start = 0x3B0, .end = 0x3BB }; |
1da177e4 | 392 | static struct resource mda2_console_resource = |
740e518e | 393 | { .name = "mda", .start = 0x3BF, .end = 0x3BF }; |
1da177e4 | 394 | vga_video_type = VIDEO_TYPE_MDA; |
4f1bcaf0 | 395 | vga_vram_size = 0x2000; |
1da177e4 LT |
396 | display_desc = "*MDA"; |
397 | request_resource(&ioport_resource, | |
398 | &mda1_console_resource); | |
399 | request_resource(&ioport_resource, | |
400 | &mda2_console_resource); | |
401 | vga_video_font_height = 14; | |
402 | } | |
403 | } else { | |
404 | /* If not, it is color. */ | |
96fd9554 | 405 | vga_can_do_color = true; |
1da177e4 LT |
406 | vga_vram_base = 0xb8000; |
407 | vga_video_port_reg = VGA_CRT_IC; | |
408 | vga_video_port_val = VGA_CRT_DC; | |
3ea33510 | 409 | if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) { |
1da177e4 LT |
410 | int i; |
411 | ||
4f1bcaf0 | 412 | vga_vram_size = 0x8000; |
1da177e4 | 413 | |
3ea33510 | 414 | if (!screen_info.orig_video_isVGA) { |
1da177e4 | 415 | static struct resource ega_console_resource |
740e518e | 416 | = { .name = "ega", .start = 0x3C0, .end = 0x3DF }; |
1da177e4 LT |
417 | vga_video_type = VIDEO_TYPE_EGAC; |
418 | display_desc = "EGA"; | |
419 | request_resource(&ioport_resource, | |
420 | &ega_console_resource); | |
421 | } else { | |
422 | static struct resource vga_console_resource | |
740e518e | 423 | = { .name = "vga+", .start = 0x3C0, .end = 0x3DF }; |
1da177e4 LT |
424 | vga_video_type = VIDEO_TYPE_VGAC; |
425 | display_desc = "VGA+"; | |
426 | request_resource(&ioport_resource, | |
427 | &vga_console_resource); | |
428 | ||
429 | #ifdef VGA_CAN_DO_64KB | |
430 | /* | |
431 | * get 64K rather than 32K of video RAM. | |
432 | * This doesn't actually work on all "VGA" | |
433 | * controllers (it seems like setting MM=01 | |
434 | * and COE=1 isn't necessarily a good idea) | |
435 | */ | |
436 | vga_vram_base = 0xa0000; | |
4f1bcaf0 | 437 | vga_vram_size = 0x10000; |
1da177e4 LT |
438 | outb_p(6, VGA_GFX_I); |
439 | outb_p(6, VGA_GFX_D); | |
440 | #endif | |
441 | /* | |
442 | * Normalise the palette registers, to point | |
443 | * the 16 screen colours to the first 16 | |
444 | * DAC entries. | |
445 | */ | |
446 | ||
447 | for (i = 0; i < 16; i++) { | |
448 | inb_p(VGA_IS1_RC); | |
449 | outb_p(i, VGA_ATT_W); | |
450 | outb_p(i, VGA_ATT_W); | |
451 | } | |
452 | outb_p(0x20, VGA_ATT_W); | |
453 | ||
454 | /* | |
455 | * Now set the DAC registers back to their | |
456 | * default values | |
457 | */ | |
458 | for (i = 0; i < 16; i++) { | |
459 | outb_p(color_table[i], VGA_PEL_IW); | |
460 | outb_p(default_red[i], VGA_PEL_D); | |
461 | outb_p(default_grn[i], VGA_PEL_D); | |
462 | outb_p(default_blu[i], VGA_PEL_D); | |
463 | } | |
464 | } | |
465 | } else { | |
466 | static struct resource cga_console_resource = | |
740e518e | 467 | { .name = "cga", .start = 0x3D4, .end = 0x3D5 }; |
1da177e4 | 468 | vga_video_type = VIDEO_TYPE_CGA; |
4f1bcaf0 | 469 | vga_vram_size = 0x2000; |
1da177e4 LT |
470 | display_desc = "*CGA"; |
471 | request_resource(&ioport_resource, | |
472 | &cga_console_resource); | |
473 | vga_video_font_height = 8; | |
474 | } | |
475 | } | |
476 | ||
4f1bcaf0 BH |
477 | vga_vram_base = VGA_MAP_MEM(vga_vram_base, vga_vram_size); |
478 | vga_vram_end = vga_vram_base + vga_vram_size; | |
1da177e4 LT |
479 | |
480 | /* | |
481 | * Find out if there is a graphics card present. | |
482 | * Are there smarter methods around? | |
483 | */ | |
484 | p = (volatile u16 *) vga_vram_base; | |
485 | saved1 = scr_readw(p); | |
486 | saved2 = scr_readw(p + 1); | |
487 | scr_writew(0xAA55, p); | |
488 | scr_writew(0x55AA, p + 1); | |
489 | if (scr_readw(p) != 0xAA55 || scr_readw(p + 1) != 0x55AA) { | |
490 | scr_writew(saved1, p); | |
491 | scr_writew(saved2, p + 1); | |
492 | goto no_vga; | |
493 | } | |
494 | scr_writew(0x55AA, p); | |
495 | scr_writew(0xAA55, p + 1); | |
496 | if (scr_readw(p) != 0x55AA || scr_readw(p + 1) != 0xAA55) { | |
497 | scr_writew(saved1, p); | |
498 | scr_writew(saved2, p + 1); | |
499 | goto no_vga; | |
500 | } | |
501 | scr_writew(saved1, p); | |
502 | scr_writew(saved2, p + 1); | |
503 | ||
504 | if (vga_video_type == VIDEO_TYPE_EGAC | |
505 | || vga_video_type == VIDEO_TYPE_VGAC | |
506 | || vga_video_type == VIDEO_TYPE_EGAM) { | |
507 | vga_hardscroll_enabled = vga_hardscroll_user_enable; | |
3ea33510 PA |
508 | vga_default_font_height = screen_info.orig_video_points; |
509 | vga_video_font_height = screen_info.orig_video_points; | |
1da177e4 LT |
510 | /* This may be suboptimal but is a safe bet - go with it */ |
511 | vga_scan_lines = | |
512 | vga_video_font_height * vga_video_num_lines; | |
513 | } | |
53dbb26d | 514 | |
3ea33510 | 515 | vgacon_xres = screen_info.orig_video_cols * VGA_FONTWIDTH; |
53dbb26d | 516 | vgacon_yres = vga_scan_lines; |
50ec42ed AD |
517 | |
518 | if (!vga_init_done) { | |
519 | vgacon_scrollback_startup(); | |
96fd9554 | 520 | vga_init_done = true; |
50ec42ed AD |
521 | } |
522 | ||
1da177e4 LT |
523 | return display_desc; |
524 | } | |
525 | ||
526 | static void vgacon_init(struct vc_data *c, int init) | |
527 | { | |
e4bdab70 | 528 | struct uni_pagedir *p; |
1da177e4 | 529 | |
50ec42ed AD |
530 | /* |
531 | * We cannot be loaded as a module, therefore init is always 1, | |
532 | * but vgacon_init can be called more than once, and init will | |
533 | * not be 1. | |
534 | */ | |
1da177e4 | 535 | c->vc_can_do_color = vga_can_do_color; |
50ec42ed AD |
536 | |
537 | /* set dimensions manually if init != 0 since vc_resize() will fail */ | |
538 | if (init) { | |
539 | c->vc_cols = vga_video_num_columns; | |
540 | c->vc_rows = vga_video_num_lines; | |
541 | } else | |
542 | vc_resize(c, vga_video_num_columns, vga_video_num_lines); | |
543 | ||
1da177e4 LT |
544 | c->vc_scan_lines = vga_scan_lines; |
545 | c->vc_font.height = vga_video_font_height; | |
546 | c->vc_complement_mask = 0x7700; | |
a40920b4 BN |
547 | if (vga_512_chars) |
548 | c->vc_hi_font_mask = 0x0800; | |
1da177e4 | 549 | p = *c->vc_uni_pagedir_loc; |
0f2893f0 | 550 | if (c->vc_uni_pagedir_loc != &vgacon_uni_pagedir) { |
1da177e4 | 551 | con_free_unimap(c); |
0f2893f0 TI |
552 | c->vc_uni_pagedir_loc = &vgacon_uni_pagedir; |
553 | vgacon_refcount++; | |
554 | } | |
555 | if (!vgacon_uni_pagedir && p) | |
1da177e4 | 556 | con_set_default_unimap(c); |
f6c06b68 | 557 | |
b434a680 MG |
558 | /* Only set the default if the user didn't deliberately override it */ |
559 | if (global_cursor_default == -1) | |
560 | global_cursor_default = | |
561 | !(screen_info.flags & VIDEO_FLAGS_NOCURSOR); | |
1da177e4 LT |
562 | } |
563 | ||
1da177e4 LT |
564 | static void vgacon_deinit(struct vc_data *c) |
565 | { | |
f0c7d2b7 | 566 | /* When closing the active console, reset video origin */ |
6ca8dfd7 | 567 | if (con_is_visible(c)) { |
1da177e4 LT |
568 | c->vc_visible_origin = vga_vram_base; |
569 | vga_set_mem_top(c); | |
1da177e4 | 570 | } |
f0c7d2b7 | 571 | |
0f2893f0 | 572 | if (!--vgacon_refcount) |
f0c7d2b7 | 573 | con_free_unimap(c); |
1da177e4 LT |
574 | c->vc_uni_pagedir_loc = &c->vc_uni_pagedir; |
575 | con_set_default_unimap(c); | |
576 | } | |
577 | ||
578 | static u8 vgacon_build_attr(struct vc_data *c, u8 color, u8 intensity, | |
fa6ce9ab | 579 | u8 blink, u8 underline, u8 reverse, u8 italic) |
1da177e4 LT |
580 | { |
581 | u8 attr = color; | |
582 | ||
583 | if (vga_can_do_color) { | |
fa6ce9ab JE |
584 | if (italic) |
585 | attr = (attr & 0xF0) | c->vc_itcolor; | |
586 | else if (underline) | |
1da177e4 LT |
587 | attr = (attr & 0xf0) | c->vc_ulcolor; |
588 | else if (intensity == 0) | |
589 | attr = (attr & 0xf0) | c->vc_halfcolor; | |
590 | } | |
591 | if (reverse) | |
592 | attr = | |
593 | ((attr) & 0x88) | ((((attr) >> 4) | ((attr) << 4)) & | |
594 | 0x77); | |
595 | if (blink) | |
596 | attr ^= 0x80; | |
597 | if (intensity == 2) | |
598 | attr ^= 0x08; | |
599 | if (!vga_can_do_color) { | |
fa6ce9ab JE |
600 | if (italic) |
601 | attr = (attr & 0xF8) | 0x02; | |
602 | else if (underline) | |
1da177e4 LT |
603 | attr = (attr & 0xf8) | 0x01; |
604 | else if (intensity == 0) | |
605 | attr = (attr & 0xf0) | 0x08; | |
606 | } | |
607 | return attr; | |
608 | } | |
609 | ||
610 | static void vgacon_invert_region(struct vc_data *c, u16 * p, int count) | |
611 | { | |
96fd9554 | 612 | const bool col = vga_can_do_color; |
1da177e4 LT |
613 | |
614 | while (count--) { | |
615 | u16 a = scr_readw(p); | |
616 | if (col) | |
617 | a = ((a) & 0x88ff) | (((a) & 0x7000) >> 4) | | |
618 | (((a) & 0x0700) << 4); | |
619 | else | |
620 | a ^= ((a & 0x0700) == 0x0100) ? 0x7000 : 0x7700; | |
621 | scr_writew(a, p++); | |
622 | } | |
623 | } | |
624 | ||
625 | static void vgacon_set_cursor_size(int xpos, int from, int to) | |
626 | { | |
627 | unsigned long flags; | |
628 | int curs, cure; | |
629 | ||
630 | #ifdef TRIDENT_GLITCH | |
631 | if (xpos < 16) | |
632 | from--, to--; | |
633 | #endif | |
634 | ||
635 | if ((from == cursor_size_lastfrom) && (to == cursor_size_lastto)) | |
636 | return; | |
637 | cursor_size_lastfrom = from; | |
638 | cursor_size_lastto = to; | |
639 | ||
6b2c1800 | 640 | raw_spin_lock_irqsave(&vga_lock, flags); |
2115aea8 ST |
641 | if (vga_video_type >= VIDEO_TYPE_VGAC) { |
642 | outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); | |
643 | curs = inb_p(vga_video_port_val); | |
644 | outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); | |
645 | cure = inb_p(vga_video_port_val); | |
646 | } else { | |
647 | curs = 0; | |
648 | cure = 0; | |
649 | } | |
1da177e4 LT |
650 | |
651 | curs = (curs & 0xc0) | from; | |
652 | cure = (cure & 0xe0) | to; | |
653 | ||
2115aea8 | 654 | outb_p(VGA_CRTC_CURSOR_START, vga_video_port_reg); |
1da177e4 | 655 | outb_p(curs, vga_video_port_val); |
2115aea8 | 656 | outb_p(VGA_CRTC_CURSOR_END, vga_video_port_reg); |
1da177e4 | 657 | outb_p(cure, vga_video_port_val); |
6b2c1800 | 658 | raw_spin_unlock_irqrestore(&vga_lock, flags); |
1da177e4 LT |
659 | } |
660 | ||
661 | static void vgacon_cursor(struct vc_data *c, int mode) | |
662 | { | |
2ae85477 AD |
663 | if (c->vc_mode != KD_TEXT) |
664 | return; | |
665 | ||
15bdab95 AD |
666 | vgacon_restore_screen(c); |
667 | ||
1da177e4 LT |
668 | switch (mode) { |
669 | case CM_ERASE: | |
88dcb6c4 | 670 | write_vga(14, (c->vc_pos - vga_vram_base) / 2); |
2115aea8 ST |
671 | if (vga_video_type >= VIDEO_TYPE_VGAC) |
672 | vgacon_set_cursor_size(c->vc_x, 31, 30); | |
673 | else | |
674 | vgacon_set_cursor_size(c->vc_x, 31, 31); | |
1da177e4 LT |
675 | break; |
676 | ||
677 | case CM_MOVE: | |
678 | case CM_DRAW: | |
679 | write_vga(14, (c->vc_pos - vga_vram_base) / 2); | |
680 | switch (c->vc_cursor_type & 0x0f) { | |
681 | case CUR_UNDERLINE: | |
682 | vgacon_set_cursor_size(c->vc_x, | |
683 | c->vc_font.height - | |
684 | (c->vc_font.height < | |
685 | 10 ? 2 : 3), | |
686 | c->vc_font.height - | |
687 | (c->vc_font.height < | |
688 | 10 ? 1 : 2)); | |
689 | break; | |
690 | case CUR_TWO_THIRDS: | |
691 | vgacon_set_cursor_size(c->vc_x, | |
692 | c->vc_font.height / 3, | |
693 | c->vc_font.height - | |
694 | (c->vc_font.height < | |
695 | 10 ? 1 : 2)); | |
696 | break; | |
697 | case CUR_LOWER_THIRD: | |
698 | vgacon_set_cursor_size(c->vc_x, | |
699 | (c->vc_font.height * 2) / 3, | |
700 | c->vc_font.height - | |
701 | (c->vc_font.height < | |
702 | 10 ? 1 : 2)); | |
703 | break; | |
704 | case CUR_LOWER_HALF: | |
705 | vgacon_set_cursor_size(c->vc_x, | |
706 | c->vc_font.height / 2, | |
707 | c->vc_font.height - | |
708 | (c->vc_font.height < | |
709 | 10 ? 1 : 2)); | |
710 | break; | |
711 | case CUR_NONE: | |
2115aea8 ST |
712 | if (vga_video_type >= VIDEO_TYPE_VGAC) |
713 | vgacon_set_cursor_size(c->vc_x, 31, 30); | |
714 | else | |
715 | vgacon_set_cursor_size(c->vc_x, 31, 31); | |
1da177e4 LT |
716 | break; |
717 | default: | |
718 | vgacon_set_cursor_size(c->vc_x, 1, | |
719 | c->vc_font.height); | |
720 | break; | |
721 | } | |
722 | break; | |
723 | } | |
724 | } | |
725 | ||
28254d43 ST |
726 | static int vgacon_doresize(struct vc_data *c, |
727 | unsigned int width, unsigned int height) | |
728 | { | |
729 | unsigned long flags; | |
730 | unsigned int scanlines = height * c->vc_font.height; | |
d1521260 | 731 | u8 scanlines_lo = 0, r7 = 0, vsync_end = 0, mode, max_scan; |
28254d43 | 732 | |
6b2c1800 | 733 | raw_spin_lock_irqsave(&vga_lock, flags); |
28254d43 | 734 | |
53dbb26d AD |
735 | vgacon_xres = width * VGA_FONTWIDTH; |
736 | vgacon_yres = height * c->vc_font.height; | |
d1521260 ST |
737 | if (vga_video_type >= VIDEO_TYPE_VGAC) { |
738 | outb_p(VGA_CRTC_MAX_SCAN, vga_video_port_reg); | |
739 | max_scan = inb_p(vga_video_port_val); | |
28254d43 | 740 | |
d1521260 ST |
741 | if (max_scan & 0x80) |
742 | scanlines <<= 1; | |
28254d43 | 743 | |
d1521260 ST |
744 | outb_p(VGA_CRTC_MODE, vga_video_port_reg); |
745 | mode = inb_p(vga_video_port_val); | |
28254d43 | 746 | |
d1521260 ST |
747 | if (mode & 0x04) |
748 | scanlines >>= 1; | |
28254d43 | 749 | |
d1521260 ST |
750 | scanlines -= 1; |
751 | scanlines_lo = scanlines & 0xff; | |
28254d43 | 752 | |
d1521260 ST |
753 | outb_p(VGA_CRTC_OVERFLOW, vga_video_port_reg); |
754 | r7 = inb_p(vga_video_port_val) & ~0x42; | |
755 | ||
756 | if (scanlines & 0x100) | |
757 | r7 |= 0x02; | |
758 | if (scanlines & 0x200) | |
759 | r7 |= 0x40; | |
760 | ||
761 | /* deprotect registers */ | |
762 | outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg); | |
763 | vsync_end = inb_p(vga_video_port_val); | |
764 | outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg); | |
765 | outb_p(vsync_end & ~0x80, vga_video_port_val); | |
766 | } | |
28254d43 ST |
767 | |
768 | outb_p(VGA_CRTC_H_DISP, vga_video_port_reg); | |
769 | outb_p(width - 1, vga_video_port_val); | |
770 | outb_p(VGA_CRTC_OFFSET, vga_video_port_reg); | |
771 | outb_p(width >> 1, vga_video_port_val); | |
772 | ||
d1521260 ST |
773 | if (vga_video_type >= VIDEO_TYPE_VGAC) { |
774 | outb_p(VGA_CRTC_V_DISP_END, vga_video_port_reg); | |
775 | outb_p(scanlines_lo, vga_video_port_val); | |
776 | outb_p(VGA_CRTC_OVERFLOW, vga_video_port_reg); | |
777 | outb_p(r7,vga_video_port_val); | |
28254d43 | 778 | |
d1521260 ST |
779 | /* reprotect registers */ |
780 | outb_p(VGA_CRTC_V_SYNC_END, vga_video_port_reg); | |
781 | outb_p(vsync_end, vga_video_port_val); | |
782 | } | |
28254d43 | 783 | |
6b2c1800 | 784 | raw_spin_unlock_irqrestore(&vga_lock, flags); |
28254d43 ST |
785 | return 0; |
786 | } | |
787 | ||
1da177e4 LT |
788 | static int vgacon_switch(struct vc_data *c) |
789 | { | |
53dbb26d AD |
790 | int x = c->vc_cols * VGA_FONTWIDTH; |
791 | int y = c->vc_rows * c->vc_font.height; | |
3ea33510 | 792 | int rows = screen_info.orig_video_lines * vga_default_font_height/ |
53dbb26d | 793 | c->vc_font.height; |
1da177e4 LT |
794 | /* |
795 | * We need to save screen size here as it's the only way | |
796 | * we can spot the screen has been resized and we need to | |
797 | * set size of freshly allocated screens ourselves. | |
798 | */ | |
799 | vga_video_num_columns = c->vc_cols; | |
800 | vga_video_num_lines = c->vc_rows; | |
f18cd8f7 JS |
801 | |
802 | /* We can only copy out the size of the video buffer here, | |
803 | * otherwise we get into VGA BIOS */ | |
804 | ||
28254d43 | 805 | if (!vga_is_gfx) { |
1da177e4 | 806 | scr_memcpyw((u16 *) c->vc_origin, (u16 *) c->vc_screenbuf, |
28254d43 ST |
807 | c->vc_screenbuf_size > vga_vram_size ? |
808 | vga_vram_size : c->vc_screenbuf_size); | |
53dbb26d AD |
809 | |
810 | if ((vgacon_xres != x || vgacon_yres != y) && | |
811 | (!(vga_video_num_columns % 2) && | |
3ea33510 | 812 | vga_video_num_columns <= screen_info.orig_video_cols && |
53dbb26d | 813 | vga_video_num_lines <= rows)) |
0aec4867 | 814 | vgacon_doresize(c, c->vc_cols, c->vc_rows); |
28254d43 ST |
815 | } |
816 | ||
15bdab95 | 817 | vgacon_scrollback_init(c->vc_size_row); |
1da177e4 LT |
818 | return 0; /* Redrawing not needed */ |
819 | } | |
820 | ||
8ede5cce | 821 | static void vga_set_palette(struct vc_data *vc, const unsigned char *table) |
1da177e4 LT |
822 | { |
823 | int i, j; | |
824 | ||
89f0244e | 825 | vga_w(vgastate.vgabase, VGA_PEL_MSK, 0xff); |
1da177e4 | 826 | for (i = j = 0; i < 16; i++) { |
89f0244e MR |
827 | vga_w(vgastate.vgabase, VGA_PEL_IW, table[i]); |
828 | vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2); | |
829 | vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2); | |
830 | vga_w(vgastate.vgabase, VGA_PEL_D, vc->vc_palette[j++] >> 2); | |
1da177e4 LT |
831 | } |
832 | } | |
833 | ||
709280da | 834 | static void vgacon_set_palette(struct vc_data *vc, const unsigned char *table) |
1da177e4 LT |
835 | { |
836 | #ifdef CAN_LOAD_PALETTE | |
837 | if (vga_video_type != VIDEO_TYPE_VGAC || vga_palette_blanked | |
6ca8dfd7 | 838 | || !con_is_visible(vc)) |
709280da | 839 | return; |
1da177e4 | 840 | vga_set_palette(vc, table); |
1da177e4 LT |
841 | #endif |
842 | } | |
843 | ||
844 | /* structure holding original VGA register settings */ | |
845 | static struct { | |
846 | unsigned char SeqCtrlIndex; /* Sequencer Index reg. */ | |
847 | unsigned char CrtCtrlIndex; /* CRT-Contr. Index reg. */ | |
848 | unsigned char CrtMiscIO; /* Miscellaneous register */ | |
849 | unsigned char HorizontalTotal; /* CRT-Controller:00h */ | |
850 | unsigned char HorizDisplayEnd; /* CRT-Controller:01h */ | |
851 | unsigned char StartHorizRetrace; /* CRT-Controller:04h */ | |
852 | unsigned char EndHorizRetrace; /* CRT-Controller:05h */ | |
853 | unsigned char Overflow; /* CRT-Controller:07h */ | |
854 | unsigned char StartVertRetrace; /* CRT-Controller:10h */ | |
855 | unsigned char EndVertRetrace; /* CRT-Controller:11h */ | |
856 | unsigned char ModeControl; /* CRT-Controller:17h */ | |
857 | unsigned char ClockingMode; /* Seq-Controller:01h */ | |
858 | } vga_state; | |
859 | ||
860 | static void vga_vesa_blank(struct vgastate *state, int mode) | |
861 | { | |
862 | /* save original values of VGA controller registers */ | |
863 | if (!vga_vesa_blanked) { | |
6b2c1800 | 864 | raw_spin_lock_irq(&vga_lock); |
1da177e4 LT |
865 | vga_state.SeqCtrlIndex = vga_r(state->vgabase, VGA_SEQ_I); |
866 | vga_state.CrtCtrlIndex = inb_p(vga_video_port_reg); | |
867 | vga_state.CrtMiscIO = vga_r(state->vgabase, VGA_MIS_R); | |
6b2c1800 | 868 | raw_spin_unlock_irq(&vga_lock); |
1da177e4 LT |
869 | |
870 | outb_p(0x00, vga_video_port_reg); /* HorizontalTotal */ | |
871 | vga_state.HorizontalTotal = inb_p(vga_video_port_val); | |
872 | outb_p(0x01, vga_video_port_reg); /* HorizDisplayEnd */ | |
873 | vga_state.HorizDisplayEnd = inb_p(vga_video_port_val); | |
874 | outb_p(0x04, vga_video_port_reg); /* StartHorizRetrace */ | |
875 | vga_state.StartHorizRetrace = inb_p(vga_video_port_val); | |
876 | outb_p(0x05, vga_video_port_reg); /* EndHorizRetrace */ | |
877 | vga_state.EndHorizRetrace = inb_p(vga_video_port_val); | |
878 | outb_p(0x07, vga_video_port_reg); /* Overflow */ | |
879 | vga_state.Overflow = inb_p(vga_video_port_val); | |
880 | outb_p(0x10, vga_video_port_reg); /* StartVertRetrace */ | |
881 | vga_state.StartVertRetrace = inb_p(vga_video_port_val); | |
882 | outb_p(0x11, vga_video_port_reg); /* EndVertRetrace */ | |
883 | vga_state.EndVertRetrace = inb_p(vga_video_port_val); | |
884 | outb_p(0x17, vga_video_port_reg); /* ModeControl */ | |
885 | vga_state.ModeControl = inb_p(vga_video_port_val); | |
886 | vga_state.ClockingMode = vga_rseq(state->vgabase, VGA_SEQ_CLOCK_MODE); | |
887 | } | |
888 | ||
889 | /* assure that video is enabled */ | |
890 | /* "0x20" is VIDEO_ENABLE_bit in register 01 of sequencer */ | |
6b2c1800 | 891 | raw_spin_lock_irq(&vga_lock); |
1da177e4 LT |
892 | vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, vga_state.ClockingMode | 0x20); |
893 | ||
894 | /* test for vertical retrace in process.... */ | |
895 | if ((vga_state.CrtMiscIO & 0x80) == 0x80) | |
896 | vga_w(state->vgabase, VGA_MIS_W, vga_state.CrtMiscIO & 0xEF); | |
897 | ||
898 | /* | |
899 | * Set <End of vertical retrace> to minimum (0) and | |
900 | * <Start of vertical Retrace> to maximum (incl. overflow) | |
901 | * Result: turn off vertical sync (VSync) pulse. | |
902 | */ | |
903 | if (mode & VESA_VSYNC_SUSPEND) { | |
904 | outb_p(0x10, vga_video_port_reg); /* StartVertRetrace */ | |
905 | outb_p(0xff, vga_video_port_val); /* maximum value */ | |
906 | outb_p(0x11, vga_video_port_reg); /* EndVertRetrace */ | |
907 | outb_p(0x40, vga_video_port_val); /* minimum (bits 0..3) */ | |
908 | outb_p(0x07, vga_video_port_reg); /* Overflow */ | |
909 | outb_p(vga_state.Overflow | 0x84, vga_video_port_val); /* bits 9,10 of vert. retrace */ | |
910 | } | |
911 | ||
912 | if (mode & VESA_HSYNC_SUSPEND) { | |
913 | /* | |
914 | * Set <End of horizontal retrace> to minimum (0) and | |
915 | * <Start of horizontal Retrace> to maximum | |
916 | * Result: turn off horizontal sync (HSync) pulse. | |
917 | */ | |
918 | outb_p(0x04, vga_video_port_reg); /* StartHorizRetrace */ | |
919 | outb_p(0xff, vga_video_port_val); /* maximum */ | |
920 | outb_p(0x05, vga_video_port_reg); /* EndHorizRetrace */ | |
921 | outb_p(0x00, vga_video_port_val); /* minimum (0) */ | |
922 | } | |
923 | ||
924 | /* restore both index registers */ | |
925 | vga_w(state->vgabase, VGA_SEQ_I, vga_state.SeqCtrlIndex); | |
926 | outb_p(vga_state.CrtCtrlIndex, vga_video_port_reg); | |
6b2c1800 | 927 | raw_spin_unlock_irq(&vga_lock); |
1da177e4 LT |
928 | } |
929 | ||
930 | static void vga_vesa_unblank(struct vgastate *state) | |
931 | { | |
932 | /* restore original values of VGA controller registers */ | |
6b2c1800 | 933 | raw_spin_lock_irq(&vga_lock); |
1da177e4 LT |
934 | vga_w(state->vgabase, VGA_MIS_W, vga_state.CrtMiscIO); |
935 | ||
936 | outb_p(0x00, vga_video_port_reg); /* HorizontalTotal */ | |
937 | outb_p(vga_state.HorizontalTotal, vga_video_port_val); | |
938 | outb_p(0x01, vga_video_port_reg); /* HorizDisplayEnd */ | |
939 | outb_p(vga_state.HorizDisplayEnd, vga_video_port_val); | |
940 | outb_p(0x04, vga_video_port_reg); /* StartHorizRetrace */ | |
941 | outb_p(vga_state.StartHorizRetrace, vga_video_port_val); | |
942 | outb_p(0x05, vga_video_port_reg); /* EndHorizRetrace */ | |
943 | outb_p(vga_state.EndHorizRetrace, vga_video_port_val); | |
944 | outb_p(0x07, vga_video_port_reg); /* Overflow */ | |
945 | outb_p(vga_state.Overflow, vga_video_port_val); | |
946 | outb_p(0x10, vga_video_port_reg); /* StartVertRetrace */ | |
947 | outb_p(vga_state.StartVertRetrace, vga_video_port_val); | |
948 | outb_p(0x11, vga_video_port_reg); /* EndVertRetrace */ | |
949 | outb_p(vga_state.EndVertRetrace, vga_video_port_val); | |
950 | outb_p(0x17, vga_video_port_reg); /* ModeControl */ | |
951 | outb_p(vga_state.ModeControl, vga_video_port_val); | |
952 | /* ClockingMode */ | |
953 | vga_wseq(state->vgabase, VGA_SEQ_CLOCK_MODE, vga_state.ClockingMode); | |
954 | ||
955 | /* restore index/control registers */ | |
956 | vga_w(state->vgabase, VGA_SEQ_I, vga_state.SeqCtrlIndex); | |
957 | outb_p(vga_state.CrtCtrlIndex, vga_video_port_reg); | |
6b2c1800 | 958 | raw_spin_unlock_irq(&vga_lock); |
1da177e4 LT |
959 | } |
960 | ||
961 | static void vga_pal_blank(struct vgastate *state) | |
962 | { | |
963 | int i; | |
964 | ||
1a66ddcb | 965 | vga_w(state->vgabase, VGA_PEL_MSK, 0xff); |
1da177e4 LT |
966 | for (i = 0; i < 16; i++) { |
967 | vga_w(state->vgabase, VGA_PEL_IW, i); | |
968 | vga_w(state->vgabase, VGA_PEL_D, 0); | |
969 | vga_w(state->vgabase, VGA_PEL_D, 0); | |
970 | vga_w(state->vgabase, VGA_PEL_D, 0); | |
971 | } | |
972 | } | |
973 | ||
974 | static int vgacon_blank(struct vc_data *c, int blank, int mode_switch) | |
975 | { | |
976 | switch (blank) { | |
977 | case 0: /* Unblank */ | |
978 | if (vga_vesa_blanked) { | |
89f0244e | 979 | vga_vesa_unblank(&vgastate); |
1da177e4 LT |
980 | vga_vesa_blanked = 0; |
981 | } | |
982 | if (vga_palette_blanked) { | |
983 | vga_set_palette(c, color_table); | |
96fd9554 | 984 | vga_palette_blanked = false; |
1da177e4 LT |
985 | return 0; |
986 | } | |
96fd9554 | 987 | vga_is_gfx = false; |
1da177e4 LT |
988 | /* Tell console.c that it has to restore the screen itself */ |
989 | return 1; | |
990 | case 1: /* Normal blanking */ | |
991 | case -1: /* Obsolete */ | |
992 | if (!mode_switch && vga_video_type == VIDEO_TYPE_VGAC) { | |
89f0244e | 993 | vga_pal_blank(&vgastate); |
96fd9554 | 994 | vga_palette_blanked = true; |
1da177e4 LT |
995 | return 0; |
996 | } | |
997 | vgacon_set_origin(c); | |
998 | scr_memsetw((void *) vga_vram_base, BLANK, | |
999 | c->vc_screenbuf_size); | |
1000 | if (mode_switch) | |
96fd9554 | 1001 | vga_is_gfx = true; |
1da177e4 LT |
1002 | return 1; |
1003 | default: /* VESA blanking */ | |
1004 | if (vga_video_type == VIDEO_TYPE_VGAC) { | |
89f0244e | 1005 | vga_vesa_blank(&vgastate, blank - 1); |
1da177e4 LT |
1006 | vga_vesa_blanked = blank; |
1007 | } | |
1008 | return 0; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | /* | |
1013 | * PIO_FONT support. | |
1014 | * | |
1015 | * The font loading code goes back to the codepage package by | |
1016 | * Joel Hoffman (joel@wam.umd.edu). (He reports that the original | |
1017 | * reference is: "From: p. 307 of _Programmer's Guide to PC & PS/2 | |
1018 | * Video Systems_ by Richard Wilton. 1987. Microsoft Press".) | |
1019 | * | |
1020 | * Change for certain monochrome monitors by Yury Shevchuck | |
1021 | * (sizif@botik.yaroslavl.su). | |
1022 | */ | |
1023 | ||
1024 | #ifdef CAN_LOAD_EGA_FONTS | |
1025 | ||
1026 | #define colourmap 0xa0000 | |
1027 | /* Pauline Middelink <middelin@polyware.iaf.nl> reports that we | |
1028 | should use 0xA0000 for the bwmap as well.. */ | |
1029 | #define blackwmap 0xa0000 | |
1030 | #define cmapsz 8192 | |
1031 | ||
96fd9554 JS |
1032 | static int vgacon_do_font_op(struct vgastate *state, char *arg, int set, |
1033 | bool ch512) | |
1da177e4 LT |
1034 | { |
1035 | unsigned short video_port_status = vga_video_port_reg + 6; | |
1036 | int font_select = 0x00, beg, i; | |
1037 | char *charmap; | |
2a248307 | 1038 | bool clear_attribs = false; |
1da177e4 | 1039 | if (vga_video_type != VIDEO_TYPE_EGAM) { |
4f1bcaf0 | 1040 | charmap = (char *) VGA_MAP_MEM(colourmap, 0); |
1da177e4 LT |
1041 | beg = 0x0e; |
1042 | #ifdef VGA_CAN_DO_64KB | |
1043 | if (vga_video_type == VIDEO_TYPE_VGAC) | |
1044 | beg = 0x06; | |
1045 | #endif | |
1046 | } else { | |
4f1bcaf0 | 1047 | charmap = (char *) VGA_MAP_MEM(blackwmap, 0); |
1da177e4 LT |
1048 | beg = 0x0a; |
1049 | } | |
1050 | ||
1051 | #ifdef BROKEN_GRAPHICS_PROGRAMS | |
1052 | /* | |
1053 | * All fonts are loaded in slot 0 (0:1 for 512 ch) | |
1054 | */ | |
1055 | ||
1056 | if (!arg) | |
1057 | return -EINVAL; /* Return to default font not supported */ | |
1058 | ||
96fd9554 | 1059 | vga_font_is_default = false; |
1da177e4 LT |
1060 | font_select = ch512 ? 0x04 : 0x00; |
1061 | #else | |
1062 | /* | |
1063 | * The default font is kept in slot 0 and is never touched. | |
1064 | * A custom font is loaded in slot 2 (256 ch) or 2:3 (512 ch) | |
1065 | */ | |
1066 | ||
1067 | if (set) { | |
1068 | vga_font_is_default = !arg; | |
1069 | if (!arg) | |
96fd9554 | 1070 | ch512 = false; /* Default font is always 256 */ |
1da177e4 LT |
1071 | font_select = arg ? (ch512 ? 0x0e : 0x0a) : 0x00; |
1072 | } | |
1073 | ||
1074 | if (!vga_font_is_default) | |
1075 | charmap += 4 * cmapsz; | |
1076 | #endif | |
1077 | ||
6b2c1800 | 1078 | raw_spin_lock_irq(&vga_lock); |
1da177e4 LT |
1079 | /* First, the Sequencer */ |
1080 | vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x1); | |
1081 | /* CPU writes only to map 2 */ | |
1082 | vga_wseq(state->vgabase, VGA_SEQ_PLANE_WRITE, 0x04); | |
1083 | /* Sequential addressing */ | |
1084 | vga_wseq(state->vgabase, VGA_SEQ_MEMORY_MODE, 0x07); | |
1085 | /* Clear synchronous reset */ | |
1086 | vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03); | |
1087 | ||
1088 | /* Now, the graphics controller, select map 2 */ | |
1089 | vga_wgfx(state->vgabase, VGA_GFX_PLANE_READ, 0x02); | |
1090 | /* disable odd-even addressing */ | |
1091 | vga_wgfx(state->vgabase, VGA_GFX_MODE, 0x00); | |
1092 | /* map start at A000:0000 */ | |
1093 | vga_wgfx(state->vgabase, VGA_GFX_MISC, 0x00); | |
6b2c1800 | 1094 | raw_spin_unlock_irq(&vga_lock); |
1da177e4 LT |
1095 | |
1096 | if (arg) { | |
1097 | if (set) | |
7e6d72c1 | 1098 | for (i = 0; i < cmapsz; i++) { |
1da177e4 | 1099 | vga_writeb(arg[i], charmap + i); |
7e6d72c1 MT |
1100 | cond_resched(); |
1101 | } | |
1da177e4 | 1102 | else |
7e6d72c1 | 1103 | for (i = 0; i < cmapsz; i++) { |
1da177e4 | 1104 | arg[i] = vga_readb(charmap + i); |
7e6d72c1 MT |
1105 | cond_resched(); |
1106 | } | |
1da177e4 LT |
1107 | |
1108 | /* | |
1109 | * In 512-character mode, the character map is not contiguous if | |
1110 | * we want to remain EGA compatible -- which we do | |
1111 | */ | |
1112 | ||
1113 | if (ch512) { | |
1114 | charmap += 2 * cmapsz; | |
1115 | arg += cmapsz; | |
1116 | if (set) | |
7e6d72c1 | 1117 | for (i = 0; i < cmapsz; i++) { |
1da177e4 | 1118 | vga_writeb(arg[i], charmap + i); |
7e6d72c1 MT |
1119 | cond_resched(); |
1120 | } | |
1da177e4 | 1121 | else |
7e6d72c1 | 1122 | for (i = 0; i < cmapsz; i++) { |
1da177e4 | 1123 | arg[i] = vga_readb(charmap + i); |
7e6d72c1 MT |
1124 | cond_resched(); |
1125 | } | |
1da177e4 LT |
1126 | } |
1127 | } | |
1128 | ||
6b2c1800 | 1129 | raw_spin_lock_irq(&vga_lock); |
1da177e4 LT |
1130 | /* First, the sequencer, Synchronous reset */ |
1131 | vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x01); | |
1132 | /* CPU writes to maps 0 and 1 */ | |
1133 | vga_wseq(state->vgabase, VGA_SEQ_PLANE_WRITE, 0x03); | |
1134 | /* odd-even addressing */ | |
1135 | vga_wseq(state->vgabase, VGA_SEQ_MEMORY_MODE, 0x03); | |
1136 | /* Character Map Select */ | |
1137 | if (set) | |
1138 | vga_wseq(state->vgabase, VGA_SEQ_CHARACTER_MAP, font_select); | |
1139 | /* clear synchronous reset */ | |
1140 | vga_wseq(state->vgabase, VGA_SEQ_RESET, 0x03); | |
1141 | ||
1142 | /* Now, the graphics controller, select map 0 for CPU */ | |
1143 | vga_wgfx(state->vgabase, VGA_GFX_PLANE_READ, 0x00); | |
1144 | /* enable even-odd addressing */ | |
1145 | vga_wgfx(state->vgabase, VGA_GFX_MODE, 0x10); | |
1146 | /* map starts at b800:0 or b000:0 */ | |
1147 | vga_wgfx(state->vgabase, VGA_GFX_MISC, beg); | |
1148 | ||
1149 | /* if 512 char mode is already enabled don't re-enable it. */ | |
1150 | if ((set) && (ch512 != vga_512_chars)) { | |
1da177e4 LT |
1151 | vga_512_chars = ch512; |
1152 | /* 256-char: enable intensity bit | |
1153 | 512-char: disable intensity bit */ | |
1154 | inb_p(video_port_status); /* clear address flip-flop */ | |
1155 | /* color plane enable register */ | |
1156 | vga_wattr(state->vgabase, VGA_ATC_PLANE_ENABLE, ch512 ? 0x07 : 0x0f); | |
1157 | /* Wilton (1987) mentions the following; I don't know what | |
1158 | it means, but it works, and it appears necessary */ | |
1159 | inb_p(video_port_status); | |
1160 | vga_wattr(state->vgabase, VGA_AR_ENABLE_DISPLAY, 0); | |
2a248307 | 1161 | clear_attribs = true; |
1da177e4 | 1162 | } |
6b2c1800 | 1163 | raw_spin_unlock_irq(&vga_lock); |
2a248307 DA |
1164 | |
1165 | if (clear_attribs) { | |
1166 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
1167 | struct vc_data *c = vc_cons[i].d; | |
1168 | if (c && c->vc_sw == &vga_con) { | |
1169 | /* force hi font mask to 0, so we always clear | |
1170 | the bit on either transition */ | |
1171 | c->vc_hi_font_mask = 0x00; | |
1172 | clear_buffer_attributes(c); | |
1173 | c->vc_hi_font_mask = ch512 ? 0x0800 : 0; | |
1174 | } | |
1175 | } | |
1176 | } | |
1da177e4 LT |
1177 | return 0; |
1178 | } | |
1179 | ||
1180 | /* | |
1181 | * Adjust the screen to fit a font of a certain height | |
1182 | */ | |
1183 | static int vgacon_adjust_height(struct vc_data *vc, unsigned fontheight) | |
1184 | { | |
1185 | unsigned char ovr, vde, fsr; | |
1186 | int rows, maxscan, i; | |
1187 | ||
1188 | rows = vc->vc_scan_lines / fontheight; /* Number of video rows we end up with */ | |
1189 | maxscan = rows * fontheight - 1; /* Scan lines to actually display-1 */ | |
1190 | ||
1191 | /* Reprogram the CRTC for the new font size | |
1192 | Note: the attempt to read the overflow register will fail | |
1193 | on an EGA, but using 0xff for the previous value appears to | |
1194 | be OK for EGA text modes in the range 257-512 scan lines, so I | |
1195 | guess we don't need to worry about it. | |
1196 | ||
1197 | The same applies for the spill bits in the font size and cursor | |
1198 | registers; they are write-only on EGA, but it appears that they | |
1199 | are all don't care bits on EGA, so I guess it doesn't matter. */ | |
1200 | ||
6b2c1800 | 1201 | raw_spin_lock_irq(&vga_lock); |
1da177e4 LT |
1202 | outb_p(0x07, vga_video_port_reg); /* CRTC overflow register */ |
1203 | ovr = inb_p(vga_video_port_val); | |
1204 | outb_p(0x09, vga_video_port_reg); /* Font size register */ | |
1205 | fsr = inb_p(vga_video_port_val); | |
6b2c1800 | 1206 | raw_spin_unlock_irq(&vga_lock); |
1da177e4 LT |
1207 | |
1208 | vde = maxscan & 0xff; /* Vertical display end reg */ | |
1209 | ovr = (ovr & 0xbd) + /* Overflow register */ | |
1210 | ((maxscan & 0x100) >> 7) + ((maxscan & 0x200) >> 3); | |
1211 | fsr = (fsr & 0xe0) + (fontheight - 1); /* Font size register */ | |
1212 | ||
6b2c1800 | 1213 | raw_spin_lock_irq(&vga_lock); |
1da177e4 LT |
1214 | outb_p(0x07, vga_video_port_reg); /* CRTC overflow register */ |
1215 | outb_p(ovr, vga_video_port_val); | |
1216 | outb_p(0x09, vga_video_port_reg); /* Font size */ | |
1217 | outb_p(fsr, vga_video_port_val); | |
1218 | outb_p(0x12, vga_video_port_reg); /* Vertical display limit */ | |
1219 | outb_p(vde, vga_video_port_val); | |
6b2c1800 | 1220 | raw_spin_unlock_irq(&vga_lock); |
5ef897c7 | 1221 | vga_video_font_height = fontheight; |
1da177e4 LT |
1222 | |
1223 | for (i = 0; i < MAX_NR_CONSOLES; i++) { | |
1224 | struct vc_data *c = vc_cons[i].d; | |
1225 | ||
1226 | if (c && c->vc_sw == &vga_con) { | |
6ca8dfd7 | 1227 | if (con_is_visible(c)) { |
1da177e4 LT |
1228 | /* void size to cause regs to be rewritten */ |
1229 | cursor_size_lastfrom = 0; | |
1230 | cursor_size_lastto = 0; | |
1231 | c->vc_sw->con_cursor(c, CM_DRAW); | |
1232 | } | |
1233 | c->vc_font.height = fontheight; | |
1234 | vc_resize(c, 0, rows); /* Adjust console size */ | |
1235 | } | |
1236 | } | |
1237 | return 0; | |
1238 | } | |
1239 | ||
1240 | static int vgacon_font_set(struct vc_data *c, struct console_font *font, unsigned flags) | |
1241 | { | |
1242 | unsigned charcount = font->charcount; | |
1243 | int rc; | |
1244 | ||
1245 | if (vga_video_type < VIDEO_TYPE_EGAM) | |
1246 | return -EINVAL; | |
1247 | ||
53dbb26d AD |
1248 | if (font->width != VGA_FONTWIDTH || |
1249 | (charcount != 256 && charcount != 512)) | |
1da177e4 LT |
1250 | return -EINVAL; |
1251 | ||
89f0244e | 1252 | rc = vgacon_do_font_op(&vgastate, font->data, 1, charcount == 512); |
1da177e4 LT |
1253 | if (rc) |
1254 | return rc; | |
1255 | ||
1256 | if (!(flags & KD_FONT_FLAG_DONT_RECALC)) | |
1257 | rc = vgacon_adjust_height(c, font->height); | |
1258 | return rc; | |
1259 | } | |
1260 | ||
1261 | static int vgacon_font_get(struct vc_data *c, struct console_font *font) | |
1262 | { | |
1263 | if (vga_video_type < VIDEO_TYPE_EGAM) | |
1264 | return -EINVAL; | |
1265 | ||
53dbb26d | 1266 | font->width = VGA_FONTWIDTH; |
1da177e4 LT |
1267 | font->height = c->vc_font.height; |
1268 | font->charcount = vga_512_chars ? 512 : 256; | |
1269 | if (!font->data) | |
1270 | return 0; | |
89f0244e | 1271 | return vgacon_do_font_op(&vgastate, font->data, 0, vga_512_chars); |
1da177e4 LT |
1272 | } |
1273 | ||
1274 | #else | |
1275 | ||
1276 | #define vgacon_font_set NULL | |
1277 | #define vgacon_font_get NULL | |
1278 | ||
1279 | #endif | |
1280 | ||
28254d43 | 1281 | static int vgacon_resize(struct vc_data *c, unsigned int width, |
e400b6ec | 1282 | unsigned int height, unsigned int user) |
28254d43 | 1283 | { |
3ea33510 PA |
1284 | if (width % 2 || width > screen_info.orig_video_cols || |
1285 | height > (screen_info.orig_video_lines * vga_default_font_height)/ | |
6d36ba62 | 1286 | c->vc_font.height) |
e400b6ec AD |
1287 | /* let svgatextmode tinker with video timings and |
1288 | return success */ | |
1289 | return (user) ? 0 : -EINVAL; | |
28254d43 | 1290 | |
6ca8dfd7 | 1291 | if (con_is_visible(c) && !vga_is_gfx) /* who knows */ |
28254d43 ST |
1292 | vgacon_doresize(c, width, height); |
1293 | return 0; | |
1294 | } | |
1295 | ||
1da177e4 LT |
1296 | static int vgacon_set_origin(struct vc_data *c) |
1297 | { | |
1298 | if (vga_is_gfx || /* We don't play origin tricks in graphic modes */ | |
1299 | (console_blanked && !vga_palette_blanked)) /* Nor we write to blanked screens */ | |
1300 | return 0; | |
1301 | c->vc_origin = c->vc_visible_origin = vga_vram_base; | |
1302 | vga_set_mem_top(c); | |
1303 | vga_rolled_over = 0; | |
1304 | return 1; | |
1305 | } | |
1306 | ||
1307 | static void vgacon_save_screen(struct vc_data *c) | |
1308 | { | |
1309 | static int vga_bootup_console = 0; | |
1310 | ||
1311 | if (!vga_bootup_console) { | |
1312 | /* This is a gross hack, but here is the only place we can | |
1313 | * set bootup console parameters without messing up generic | |
1314 | * console initialization routines. | |
1315 | */ | |
1316 | vga_bootup_console = 1; | |
3ea33510 PA |
1317 | c->vc_x = screen_info.orig_x; |
1318 | c->vc_y = screen_info.orig_y; | |
1da177e4 | 1319 | } |
f18cd8f7 | 1320 | |
025dfdaf | 1321 | /* We can't copy in more than the size of the video buffer, |
f18cd8f7 JS |
1322 | * or we'll be copying in VGA BIOS */ |
1323 | ||
1da177e4 LT |
1324 | if (!vga_is_gfx) |
1325 | scr_memcpyw((u16 *) c->vc_screenbuf, (u16 *) c->vc_origin, | |
f18cd8f7 | 1326 | c->vc_screenbuf_size > vga_vram_size ? vga_vram_size : c->vc_screenbuf_size); |
1da177e4 LT |
1327 | } |
1328 | ||
d705ff38 JS |
1329 | static bool vgacon_scroll(struct vc_data *c, unsigned int t, unsigned int b, |
1330 | enum con_scroll dir, unsigned int lines) | |
1da177e4 LT |
1331 | { |
1332 | unsigned long oldo; | |
1333 | unsigned int delta; | |
1334 | ||
2ae85477 | 1335 | if (t || b != c->vc_rows || vga_is_gfx || c->vc_mode != KD_TEXT) |
d705ff38 | 1336 | return false; |
1da177e4 | 1337 | |
1da177e4 | 1338 | if (!vga_hardscroll_enabled || lines >= c->vc_rows / 2) |
d705ff38 | 1339 | return false; |
1da177e4 | 1340 | |
15bdab95 | 1341 | vgacon_restore_screen(c); |
1da177e4 LT |
1342 | oldo = c->vc_origin; |
1343 | delta = lines * c->vc_size_row; | |
1344 | if (dir == SM_UP) { | |
15bdab95 | 1345 | vgacon_scrollback_update(c, t, lines); |
1da177e4 LT |
1346 | if (c->vc_scr_end + delta >= vga_vram_end) { |
1347 | scr_memcpyw((u16 *) vga_vram_base, | |
1348 | (u16 *) (oldo + delta), | |
1349 | c->vc_screenbuf_size - delta); | |
1350 | c->vc_origin = vga_vram_base; | |
1351 | vga_rolled_over = oldo - vga_vram_base; | |
1352 | } else | |
1353 | c->vc_origin += delta; | |
1354 | scr_memsetw((u16 *) (c->vc_origin + c->vc_screenbuf_size - | |
93f78da4 | 1355 | delta), c->vc_video_erase_char, |
1da177e4 LT |
1356 | delta); |
1357 | } else { | |
1358 | if (oldo - delta < vga_vram_base) { | |
1359 | scr_memmovew((u16 *) (vga_vram_end - | |
1360 | c->vc_screenbuf_size + | |
1361 | delta), (u16 *) oldo, | |
1362 | c->vc_screenbuf_size - delta); | |
1363 | c->vc_origin = vga_vram_end - c->vc_screenbuf_size; | |
1364 | vga_rolled_over = 0; | |
1365 | } else | |
1366 | c->vc_origin -= delta; | |
1367 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
93f78da4 | 1368 | scr_memsetw((u16 *) (c->vc_origin), c->vc_video_erase_char, |
1da177e4 LT |
1369 | delta); |
1370 | } | |
1371 | c->vc_scr_end = c->vc_origin + c->vc_screenbuf_size; | |
1372 | c->vc_visible_origin = c->vc_origin; | |
1373 | vga_set_mem_top(c); | |
1374 | c->vc_pos = (c->vc_pos - oldo) + c->vc_origin; | |
d705ff38 | 1375 | return true; |
1da177e4 LT |
1376 | } |
1377 | ||
1378 | ||
1379 | /* | |
1380 | * The console `switch' structure for the VGA based console | |
1381 | */ | |
1382 | ||
1383 | static int vgacon_dummy(struct vc_data *c) | |
1384 | { | |
1385 | return 0; | |
1386 | } | |
1387 | ||
1388 | #define DUMMY (void *) vgacon_dummy | |
1389 | ||
1390 | const struct consw vga_con = { | |
1391 | .owner = THIS_MODULE, | |
1392 | .con_startup = vgacon_startup, | |
1393 | .con_init = vgacon_init, | |
1394 | .con_deinit = vgacon_deinit, | |
1395 | .con_clear = DUMMY, | |
1396 | .con_putc = DUMMY, | |
1397 | .con_putcs = DUMMY, | |
1398 | .con_cursor = vgacon_cursor, | |
1399 | .con_scroll = vgacon_scroll, | |
1da177e4 LT |
1400 | .con_switch = vgacon_switch, |
1401 | .con_blank = vgacon_blank, | |
1402 | .con_font_set = vgacon_font_set, | |
1403 | .con_font_get = vgacon_font_get, | |
28254d43 | 1404 | .con_resize = vgacon_resize, |
1da177e4 LT |
1405 | .con_set_palette = vgacon_set_palette, |
1406 | .con_scrolldelta = vgacon_scrolldelta, | |
1407 | .con_set_origin = vgacon_set_origin, | |
1408 | .con_save_screen = vgacon_save_screen, | |
1409 | .con_build_attr = vgacon_build_attr, | |
1410 | .con_invert_region = vgacon_invert_region, | |
1411 | }; | |
a4de0526 | 1412 | EXPORT_SYMBOL(vga_con); |
1da177e4 LT |
1413 | |
1414 | MODULE_LICENSE("GPL"); |