1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
5 * Copyright (c) 1992-1998 Søren Schmidt
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer as
13 * the first lines of this file unmodified.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. The name of the author may not be used to endorse or promote products
18 * derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
21 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
22 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
23 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
24 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
25 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
29 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 *
31 */
32
33 #include <sys/cdefs.h>
34 #include "opt_vga.h"
35 #include "opt_fb.h"
36 #ifndef FB_DEBUG
37 #define FB_DEBUG 0
38 #endif
39 #include "opt_syscons.h" /* should be removed in the future, XXX */
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/kernel.h>
44 #include <sys/conf.h>
45 #include <sys/fcntl.h>
46 #include <sys/malloc.h>
47 #include <sys/fbio.h>
48
49 #include <vm/vm.h>
50 #include <vm/vm_param.h>
51 #include <vm/pmap.h>
52
53 #include <machine/md_var.h>
54 #if defined(__i386__) || defined(__amd64__)
55 #include <machine/pc/bios.h>
56 #endif
57 #include <machine/bus.h>
58
59 #include <dev/fb/fbreg.h>
60 #include <dev/fb/vgareg.h>
61
62 #include <isa/isareg.h>
63
64 #ifndef VGA_DEBUG
65 #define VGA_DEBUG 0
66 #endif
67
68 /* XXX machine/pc/bios.h has got too much i386-specific stuff in it */
69 #ifndef BIOS_PADDRTOVADDR
70 #define BIOS_PADDRTOVADDR(x) (x)
71 #endif
72
73 int
vga_probe_unit(int unit,video_adapter_t * buf,int flags)74 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
75 {
76 video_adapter_t *adp;
77 video_switch_t *sw;
78 int error;
79
80 sw = vid_get_switch(VGA_DRIVER_NAME);
81 if (sw == NULL)
82 return 0;
83 error = (*sw->probe)(unit, &adp, NULL, flags);
84 if (error)
85 return error;
86 bcopy(adp, buf, sizeof(*buf));
87 return 0;
88 }
89
90 int
vga_attach_unit(int unit,vga_softc_t * sc,int flags)91 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
92 {
93 video_switch_t *sw;
94 int error;
95
96 sw = vid_get_switch(VGA_DRIVER_NAME);
97 if (sw == NULL)
98 return ENXIO;
99
100 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
101 if (error)
102 return error;
103 return (*sw->init)(unit, sc->adp, flags);
104 }
105
106 /* LOW-LEVEL */
107
108 #include <isa/rtc.h>
109 #ifdef __i386__
110 #include <dev/fb/vesa.h>
111 #endif
112
113 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
114 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
115 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
116
117 /* for compatibility with old kernel options */
118 #ifdef SC_ALT_SEQACCESS
119 #undef SC_ALT_SEQACCESS
120 #undef VGA_ALT_SEQACCESS
121 #define VGA_ALT_SEQACCESS 1
122 #endif
123
124 #ifdef SLOW_VGA
125 #undef SLOW_VGA
126 #undef VGA_SLOW_IOACCESS
127 #define VGA_SLOW_IOACCESS
128 #endif
129
130 /* architecture dependent option */
131 #if !defined(__i386__) && !defined(__amd64__)
132 #define VGA_NO_BIOS 1
133 #endif
134
135 /* this should really be in `rtc.h' */
136 #define RTC_EQUIPMENT 0x14
137
138 /* various sizes */
139 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
140 #define V_MODE_PARAM_SIZE 64
141
142 /* video adapter state buffer */
143 struct adp_state {
144 int sig;
145 #define V_STATE_SIG 0x736f6962
146 u_char regs[V_MODE_PARAM_SIZE];
147 };
148 typedef struct adp_state adp_state_t;
149
150 /* video adapter information */
151 #define DCC_MONO 0
152 #define DCC_CGA40 1
153 #define DCC_CGA80 2
154 #define DCC_EGAMONO 3
155 #define DCC_EGA40 4
156 #define DCC_EGA80 5
157
158 /*
159 * NOTE: `va_window' should have a virtual address, but is initialized
160 * with a physical address in the following table, as verify_adapter()
161 * will perform address conversion at run-time.
162 */
163 static video_adapter_t adapter_init_value[] = {
164 /* DCC_MONO */
165 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC,
166 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
167 0, 0, 0, 0, 7, 0, },
168 /* DCC_CGA40 */
169 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
170 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
171 0, 0, 0, 0, 3, 0, },
172 /* DCC_CGA80 */
173 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
174 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
175 0, 0, 0, 0, 3, 0, },
176 /* DCC_EGAMONO */
177 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC,
178 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
179 0, 0, 0, 0, 7, 0, },
180 /* DCC_EGA40 */
181 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
182 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
183 0, 0, 0, 0, 3, 0, },
184 /* DCC_EGA80 */
185 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
186 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
187 0, 0, 0, 0, 3, 0, },
188 };
189
190 static video_adapter_t biosadapter[2];
191 static int biosadapters = 0;
192
193 /* video driver declarations */
194 static int vga_configure(int flags);
195 int (*vga_sub_configure)(int flags);
196 #if 0
197 static int vga_nop(void);
198 #endif
199 static int vga_error(void);
200 static vi_probe_t vga_probe;
201 static vi_init_t vga_init;
202 static vi_get_info_t vga_get_info;
203 static vi_query_mode_t vga_query_mode;
204 static vi_set_mode_t vga_set_mode;
205 static vi_save_font_t vga_save_font;
206 static vi_load_font_t vga_load_font;
207 static vi_show_font_t vga_show_font;
208 static vi_save_palette_t vga_save_palette;
209 static vi_load_palette_t vga_load_palette;
210 static vi_set_border_t vga_set_border;
211 static vi_save_state_t vga_save_state;
212 static vi_load_state_t vga_load_state;
213 static vi_set_win_org_t vga_set_origin;
214 static vi_read_hw_cursor_t vga_read_hw_cursor;
215 static vi_set_hw_cursor_t vga_set_hw_cursor;
216 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
217 static vi_blank_display_t vga_blank_display;
218 static vi_mmap_t vga_mmap_buf;
219 static vi_ioctl_t vga_dev_ioctl;
220 #ifndef VGA_NO_MODE_CHANGE
221 static vi_clear_t vga_clear;
222 static vi_fill_rect_t vga_fill_rect;
223 static vi_bitblt_t vga_bitblt;
224 #else /* VGA_NO_MODE_CHANGE */
225 #define vga_clear (vi_clear_t *)vga_error
226 #define vga_fill_rect (vi_fill_rect_t *)vga_error
227 #define vga_bitblt (vi_bitblt_t *)vga_error
228 #endif
229 static vi_diag_t vga_diag;
230
231 static video_switch_t vgavidsw = {
232 vga_probe,
233 vga_init,
234 vga_get_info,
235 vga_query_mode,
236 vga_set_mode,
237 vga_save_font,
238 vga_load_font,
239 vga_show_font,
240 vga_save_palette,
241 vga_load_palette,
242 vga_set_border,
243 vga_save_state,
244 vga_load_state,
245 vga_set_origin,
246 vga_read_hw_cursor,
247 vga_set_hw_cursor,
248 vga_set_hw_cursor_shape,
249 vga_blank_display,
250 vga_mmap_buf,
251 vga_dev_ioctl,
252 vga_clear,
253 vga_fill_rect,
254 vga_bitblt,
255 vga_error,
256 vga_error,
257 vga_diag,
258 };
259
260 VIDEO_DRIVER(mda, vgavidsw, NULL);
261 VIDEO_DRIVER(cga, vgavidsw, NULL);
262 VIDEO_DRIVER(ega, vgavidsw, NULL);
263 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
264
265 /* VGA BIOS standard video modes */
266 #define EOT (-1)
267 #define NA (-2)
268
269 static video_info_t bios_vmode[] = {
270 /* CGA */
271 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
272 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
273 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
274 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
275 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
276 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
277 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
278 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
279 /* EGA */
280 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
281 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
282 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
283 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
284 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
285 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
286 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
287 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
288 /* VGA */
289 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
290 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
291 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
292 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
293 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
294 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
295 /* MDA */
296 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
297 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
298 /* EGA */
299 { M_ENH_B80x43, V_INFO_COLOR, 80, 43, 8, 8, 2, 1,
300 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
301 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
302 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
303 /* VGA */
304 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
305 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
306 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
307 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
308 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
309 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
310 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
311 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
312 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
313 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
314 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
315 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
316
317 #ifndef VGA_NO_MODE_CHANGE
318
319 #ifdef VGA_WIDTH90
320 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1,
321 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
322 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
323 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
324 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1,
325 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
326 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
327 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
328 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1,
329 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
330 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1,
331 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
332 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1,
333 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
334 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1,
335 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
336 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1,
337 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
338 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1,
339 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
340 #endif /* VGA_WIDTH90 */
341
342 /* CGA */
343 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
344 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
345 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
346 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
347 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
348 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
349 /* EGA */
350 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
351 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
352 V_INFO_MM_PLANAR },
353 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
354 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
355 V_INFO_MM_PLANAR },
356 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
357 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
358 V_INFO_MM_PLANAR },
359 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
360 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
361 V_INFO_MM_PLANAR },
362 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
363 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
364 V_INFO_MM_PLANAR },
365 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
366 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
367 V_INFO_MM_PLANAR },
368 /* VGA */
369 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
370 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
371 V_INFO_MM_PLANAR },
372 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
373 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
374 V_INFO_MM_PLANAR },
375 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
376 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
377 V_INFO_MM_PACKED, 1 },
378 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4,
379 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
380 V_INFO_MM_VGAX, 1 },
381 #endif /* VGA_NO_MODE_CHANGE */
382
383 { EOT },
384 };
385
386 static int vga_init_done = FALSE;
387 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
388 static u_char *video_mode_ptr = NULL; /* EGA/VGA */
389 static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */
390 #endif
391 static u_char *mode_map[V_MODE_MAP_SIZE];
392 static adp_state_t adpstate;
393 static adp_state_t adpstate2;
394 static int rows_offset = 1;
395
396 /* local macros and functions */
397 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
398
399 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
400 static void map_mode_table(u_char *map[], u_char *table, int max);
401 #endif
402 static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max,
403 int color);
404 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
405 static int map_mode_num(int mode);
406 #endif
407 static int map_gen_mode_num(int type, int color, int mode);
408 static int map_bios_mode_num(int type, int color, int bios_mode);
409 static u_char *get_mode_param(int mode);
410 #ifndef VGA_NO_BIOS
411 static void fill_adapter_param(int code, video_adapter_t *adp);
412 #endif
413 static int verify_adapter(video_adapter_t *adp);
414 static void update_adapter_info(video_adapter_t *adp, video_info_t *info);
415 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
416 #define COMP_IDENTICAL 0
417 #define COMP_SIMILAR 1
418 #define COMP_DIFFERENT 2
419 static int comp_adpregs(u_char *buf1, u_char *buf2);
420 #endif
421 static int probe_adapters(void);
422 static int set_line_length(video_adapter_t *adp, int pixel);
423 static int set_display_start(video_adapter_t *adp, int x, int y);
424
425 #ifndef VGA_NO_MODE_CHANGE
426 #ifdef VGA_WIDTH90
427 static void set_width90(adp_state_t *params);
428 #endif
429 #endif /* !VGA_NO_MODE_CHANGE */
430
431 #ifndef VGA_NO_FONT_LOADING
432 #define PARAM_BUFSIZE 6
433 static void set_font_mode(video_adapter_t *adp, u_char *buf);
434 static void set_normal_mode(video_adapter_t *adp, u_char *buf);
435 #endif
436
437 #ifndef VGA_NO_MODE_CHANGE
438 static void filll_io(int val, vm_offset_t d, size_t size);
439 static void planar_fill(video_adapter_t *adp, int val);
440 static void packed_fill(video_adapter_t *adp, int val);
441 static void direct_fill(video_adapter_t *adp, int val);
442 #ifdef notyet
443 static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y,
444 int cx, int cy);
445 static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y,
446 int cx, int cy);
447 static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y,
448 int cx, int cy);
449 static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y,
450 int cx, int cy);
451 static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y,
452 int cx, int cy);
453 #endif /* notyet */
454 #endif /* !VGA_NO_MODE_CHANGE */
455
456 static void dump_buffer(u_char *buf, size_t len);
457
458 #define ISMAPPED(pa, width) \
459 (((pa) <= (u_long)0x1000 - (width)) \
460 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
461
462 #define prologue(adp, flag, err) \
463 if (!vga_init_done || !((adp)->va_flags & (flag))) \
464 return (err)
465
466 /* a backdoor for the console driver */
467 static int
vga_configure(int flags)468 vga_configure(int flags)
469 {
470 int i;
471
472 probe_adapters();
473 for (i = 0; i < biosadapters; ++i) {
474 if (!probe_done(&biosadapter[i]))
475 continue;
476 biosadapter[i].va_flags |= V_ADP_INITIALIZED;
477 if (!config_done(&biosadapter[i])) {
478 if (vid_register(&biosadapter[i]) < 0)
479 continue;
480 biosadapter[i].va_flags |= V_ADP_REGISTERED;
481 }
482 }
483 if (vga_sub_configure != NULL)
484 (*vga_sub_configure)(flags);
485
486 return biosadapters;
487 }
488
489 /* local subroutines */
490
491 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
492 /* construct the mode parameter map */
493 static void
map_mode_table(u_char * map[],u_char * table,int max)494 map_mode_table(u_char *map[], u_char *table, int max)
495 {
496 int i;
497
498 for(i = 0; i < max; ++i)
499 map[i] = table + i*V_MODE_PARAM_SIZE;
500 for(; i < V_MODE_MAP_SIZE; ++i)
501 map[i] = NULL;
502 }
503 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
504
505 static void
clear_mode_map(video_adapter_t * adp,u_char * map[],int max,int color)506 clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
507 {
508 video_info_t info;
509 int i;
510
511 /*
512 * NOTE: we don't touch `bios_vmode[]' because it is shared
513 * by all adapters.
514 */
515 for(i = 0; i < max; ++i) {
516 if (vga_get_info(adp, i, &info))
517 continue;
518 if ((info.vi_flags & V_INFO_COLOR) != color)
519 map[i] = NULL;
520 }
521 }
522
523 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
524 /* map the non-standard video mode to a known mode number */
525 static int
map_mode_num(int mode)526 map_mode_num(int mode)
527 {
528 static struct {
529 int from;
530 int to;
531 } mode_map[] = {
532 { M_ENH_B80x43, M_ENH_B80x25 },
533 { M_ENH_C80x43, M_ENH_C80x25 },
534 { M_VGA_M80x30, M_VGA_M80x25 },
535 { M_VGA_C80x30, M_VGA_C80x25 },
536 { M_VGA_M80x50, M_VGA_M80x25 },
537 { M_VGA_C80x50, M_VGA_C80x25 },
538 { M_VGA_M80x60, M_VGA_M80x25 },
539 { M_VGA_C80x60, M_VGA_C80x25 },
540 #ifdef VGA_WIDTH90
541 { M_VGA_M90x25, M_VGA_M80x25 },
542 { M_VGA_C90x25, M_VGA_C80x25 },
543 { M_VGA_M90x30, M_VGA_M80x25 },
544 { M_VGA_C90x30, M_VGA_C80x25 },
545 { M_VGA_M90x43, M_VGA_M80x25 },
546 { M_VGA_C90x43, M_ENH_C80x25 },
547 { M_VGA_M90x50, M_VGA_M80x25 },
548 { M_VGA_C90x50, M_VGA_C80x25 },
549 { M_VGA_M90x60, M_VGA_M80x25 },
550 { M_VGA_C90x60, M_VGA_C80x25 },
551 #endif
552 { M_VGA_MODEX, M_VGA_CG320 },
553 };
554 int i;
555
556 for (i = 0; i < nitems(mode_map); ++i) {
557 if (mode_map[i].from == mode)
558 return mode_map[i].to;
559 }
560 return mode;
561 }
562 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
563
564 /* map a generic video mode to a known mode number */
565 static int
map_gen_mode_num(int type,int color,int mode)566 map_gen_mode_num(int type, int color, int mode)
567 {
568 static struct {
569 int from;
570 int to_color;
571 int to_mono;
572 } mode_map[] = {
573 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, },
574 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, },
575 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, },
576 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, },
577 };
578 int i;
579
580 if (mode == M_TEXT_80x25) {
581 switch (type) {
582
583 case KD_VGA:
584 if (color)
585 return M_VGA_C80x25;
586 else
587 return M_VGA_M80x25;
588 break;
589
590 case KD_EGA:
591 if (color)
592 return M_ENH_C80x25;
593 else
594 return M_EGAMONO80x25;
595 break;
596
597 case KD_CGA:
598 return M_C80x25;
599
600 case KD_MONO:
601 case KD_HERCULES:
602 return M_EGAMONO80x25; /* XXX: this name is confusing */
603
604 default:
605 return -1;
606 }
607 }
608
609 for (i = 0; i < nitems(mode_map); ++i) {
610 if (mode_map[i].from == mode)
611 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
612 }
613 return mode;
614 }
615
616 /* turn the BIOS video number into our video mode number */
617 static int
map_bios_mode_num(int type,int color,int bios_mode)618 map_bios_mode_num(int type, int color, int bios_mode)
619 {
620 static int cga_modes[7] = {
621 M_B40x25, M_C40x25, /* 0, 1 */
622 M_B80x25, M_C80x25, /* 2, 3 */
623 M_BG320, M_CG320,
624 M_BG640,
625 };
626 static int ega_modes[17] = {
627 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */
628 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */
629 M_BG320, M_CG320,
630 M_BG640,
631 M_EGAMONO80x25, /* 7 */
632 8, 9, 10, 11, 12,
633 M_CG320_D,
634 M_CG640_E,
635 M_ENHMONOAPA2, /* XXX: video momery > 64K */
636 M_ENH_CG640, /* XXX: video momery > 64K */
637 };
638 static int vga_modes[20] = {
639 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
640 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
641 M_BG320, M_CG320,
642 M_BG640,
643 M_VGA_M80x25, /* 7 */
644 8, 9, 10, 11, 12,
645 M_CG320_D,
646 M_CG640_E,
647 M_ENHMONOAPA2,
648 M_ENH_CG640,
649 M_BG640x480, M_CG640x480,
650 M_VGA_CG320,
651 };
652
653 switch (type) {
654
655 case KD_VGA:
656 if (bios_mode < nitems(vga_modes))
657 return vga_modes[bios_mode];
658 else if (color)
659 return M_VGA_C80x25;
660 else
661 return M_VGA_M80x25;
662 break;
663
664 case KD_EGA:
665 if (bios_mode < nitems(ega_modes))
666 return ega_modes[bios_mode];
667 else if (color)
668 return M_ENH_C80x25;
669 else
670 return M_EGAMONO80x25;
671 break;
672
673 case KD_CGA:
674 if (bios_mode < nitems(cga_modes))
675 return cga_modes[bios_mode];
676 else
677 return M_C80x25;
678 break;
679
680 case KD_MONO:
681 case KD_HERCULES:
682 return M_EGAMONO80x25; /* XXX: this name is confusing */
683
684 default:
685 break;
686 }
687 return -1;
688 }
689
690 /* look up a parameter table entry */
691 static u_char
get_mode_param(int mode)692 *get_mode_param(int mode)
693 {
694 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
695 if (mode >= V_MODE_MAP_SIZE)
696 mode = map_mode_num(mode);
697 #endif
698 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
699 return mode_map[mode];
700 else
701 return NULL;
702 }
703
704 #ifndef VGA_NO_BIOS
705 static void
fill_adapter_param(int code,video_adapter_t * adp)706 fill_adapter_param(int code, video_adapter_t *adp)
707 {
708 static struct {
709 int primary;
710 int secondary;
711 } dcc[] = {
712 { DCC_MONO, DCC_EGA40 /* CGA monitor */ },
713 { DCC_MONO, DCC_EGA80 /* CGA monitor */ },
714 { DCC_MONO, DCC_EGA80 },
715 { DCC_MONO, DCC_EGA80 },
716 { DCC_CGA40, DCC_EGAMONO },
717 { DCC_CGA80, DCC_EGAMONO },
718 { DCC_EGA40 /* CGA monitor */, DCC_MONO},
719 { DCC_EGA80 /* CGA monitor */, DCC_MONO},
720 { DCC_EGA80, DCC_MONO },
721 { DCC_EGA80, DCC_MONO },
722 { DCC_EGAMONO, DCC_CGA40 },
723 { DCC_EGAMONO, DCC_CGA80 },
724 };
725
726 if ((code < 0) || (code >= nitems(dcc))) {
727 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
728 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
729 } else {
730 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
731 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
732 }
733 }
734 #endif /* VGA_NO_BIOS */
735
736 static int
verify_adapter(video_adapter_t * adp)737 verify_adapter(video_adapter_t *adp)
738 {
739 vm_offset_t buf;
740 u_int16_t v;
741 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
742 u_int32_t p;
743 #endif
744
745 buf = BIOS_PADDRTOVADDR(adp->va_window);
746 v = readw(buf);
747 writew(buf, 0xA55A);
748 if (readw(buf) != 0xA55A)
749 return ENXIO;
750 writew(buf, v);
751
752 switch (adp->va_type) {
753
754 case KD_EGA:
755 outb(adp->va_crtc_addr, 7);
756 if (inb(adp->va_crtc_addr) == 7) {
757 adp->va_type = KD_VGA;
758 adp->va_name = "vga";
759 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
760 }
761 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
762 /* the color adapter may be in the 40x25 mode... XXX */
763
764 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
765 /* get the BIOS video mode pointer */
766 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
767 p = BIOS_SADDRTOLADDR(p);
768 if (ISMAPPED(p, sizeof(u_int32_t))) {
769 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
770 p = BIOS_SADDRTOLADDR(p);
771 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
772 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
773 }
774 #endif
775 break;
776
777 case KD_CGA:
778 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
779 /* may be in the 40x25 mode... XXX */
780 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
781 /* get the BIOS video mode pointer */
782 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
783 p = BIOS_SADDRTOLADDR(p);
784 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
785 #endif
786 break;
787
788 case KD_MONO:
789 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
790 /* get the BIOS video mode pointer */
791 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
792 p = BIOS_SADDRTOLADDR(p);
793 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
794 #endif
795 break;
796 }
797
798 return 0;
799 }
800
801 static void
update_adapter_info(video_adapter_t * adp,video_info_t * info)802 update_adapter_info(video_adapter_t *adp, video_info_t *info)
803 {
804 adp->va_flags &= ~V_ADP_COLOR;
805 adp->va_flags |=
806 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
807 adp->va_crtc_addr =
808 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
809 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
810 adp->va_window_size = info->vi_window_size;
811 adp->va_window_gran = info->vi_window_gran;
812 adp->va_window_orig = 0;
813 /* XXX */
814 adp->va_buffer = info->vi_buffer;
815 adp->va_buffer_size = info->vi_buffer_size;
816 adp->va_flags &= ~V_ADP_CWIDTH9;
817 if (info->vi_flags & V_INFO_CWIDTH9)
818 adp->va_flags |= V_ADP_CWIDTH9;
819 if (info->vi_mem_model == V_INFO_MM_VGAX) {
820 adp->va_line_width = info->vi_width/2;
821 } else if (info->vi_flags & V_INFO_GRAPHICS) {
822 switch (info->vi_depth/info->vi_planes) {
823 case 1:
824 adp->va_line_width = info->vi_width/8;
825 break;
826 case 2:
827 adp->va_line_width = info->vi_width/4;
828 break;
829 case 4:
830 adp->va_line_width = info->vi_width/2;
831 break;
832 case 8:
833 default: /* shouldn't happen */
834 adp->va_line_width = info->vi_width;
835 break;
836 }
837 } else {
838 adp->va_line_width = info->vi_width;
839 }
840 adp->va_disp_start.x = 0;
841 adp->va_disp_start.y = 0;
842 bcopy(info, &adp->va_info, sizeof(adp->va_info));
843 }
844
845 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
846 /* compare two parameter table entries */
847 static int
comp_adpregs(u_char * buf1,u_char * buf2)848 comp_adpregs(u_char *buf1, u_char *buf2)
849 {
850 static struct {
851 u_char mask;
852 } params[V_MODE_PARAM_SIZE] = {
853 {0xff}, {0x00}, {0xff}, /* COLS}, ROWS}, POINTS */
854 {0x00}, {0x00}, /* page length */
855 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */
856 {0xf3}, /* misc register */
857 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */
858 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
859 {0x00}, {0x00}, {0x00}, {0x00}, {0x00},
860 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
861 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
862 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */
863 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
864 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
865 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
866 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */
867 {0xff}, {0xff}, {0xff}, {0xff},
868 };
869 int identical = TRUE;
870 int i;
871
872 if ((buf1 == NULL) || (buf2 == NULL))
873 return COMP_DIFFERENT;
874
875 for (i = 0; i < nitems(params); ++i) {
876 if (params[i].mask == 0) /* don't care */
877 continue;
878 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
879 return COMP_DIFFERENT;
880 if (buf1[i] != buf2[i])
881 identical = FALSE;
882 }
883 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
884 }
885 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
886
887 /* probe video adapters and return the number of detected adapters */
888 static int
probe_adapters(void)889 probe_adapters(void)
890 {
891 video_adapter_t *adp;
892 video_info_t info;
893 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
894 u_char *mp;
895 #endif
896 int height, i, width;
897
898 /* do this test only once */
899 if (vga_init_done)
900 return biosadapters;
901 vga_init_done = TRUE;
902
903 /*
904 * Locate display adapters.
905 * The AT architecture supports up to two adapters. `syscons' allows
906 * the following combinations of adapters:
907 * 1) MDA + CGA
908 * 2) MDA + EGA/VGA color
909 * 3) CGA + EGA/VGA mono
910 * Note that `syscons' doesn't bother with MCGA as it is only
911 * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
912 * thus, they are not running FreeBSD!
913 * When there are two adapaters in the system, one becomes `primary'
914 * and the other `secondary'. The EGA adapter has a set of DIP
915 * switches on board for this information and the EGA BIOS copies
916 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88).
917 * The VGA BIOS has more sophisticated mechanism and has this
918 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains
919 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
920 */
921
922 /*
923 * Check rtc and BIOS data area.
924 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
925 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are
926 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets
927 * these bits in BIOSDATA_EQUIPMENT according to the monitor
928 * type detected.
929 */
930 #ifndef VGA_NO_BIOS
931 if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
932 /* EGA/VGA BIOS is present */
933 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
934 biosadapter);
935 } else {
936 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
937 case 0:
938 /* EGA/VGA: shouldn't be happening */
939 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
940 biosadapter);
941 break;
942 case 1:
943 /* CGA 40x25 */
944 /* FIXME: switch to the 80x25 mode? XXX */
945 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
946 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
947 break;
948 case 2:
949 /* CGA 80x25 */
950 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
951 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
952 break;
953 case 3:
954 /* MDA */
955 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
956 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
957 break;
958 }
959 }
960 #else
961 /* assume EGA/VGA? XXX */
962 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
963 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
964 #endif /* VGA_NO_BIOS */
965
966 biosadapters = 0;
967 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
968 ++biosadapters;
969 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
970 biosadapter[V_ADP_SECONDARY].va_mode =
971 biosadapter[V_ADP_SECONDARY].va_initial_mode =
972 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type,
973 biosadapter[V_ADP_SECONDARY].va_flags
974 & V_ADP_COLOR,
975 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
976 } else {
977 biosadapter[V_ADP_SECONDARY].va_type = -1;
978 }
979 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
980 ++biosadapters;
981 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
982 #ifndef VGA_NO_BIOS
983 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode =
984 readb(BIOS_PADDRTOVADDR(0x449));
985 #else
986 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */
987 #endif
988 biosadapter[V_ADP_PRIMARY].va_mode =
989 biosadapter[V_ADP_PRIMARY].va_initial_mode =
990 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type,
991 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
992 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
993 } else {
994 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
995 biosadapter[V_ADP_SECONDARY].va_type = -1;
996 }
997 if (biosadapters == 0)
998 return biosadapters;
999 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
1000 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
1001
1002 #if 0 /* we don't need these... */
1003 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
1004 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
1005 #endif
1006
1007 #ifdef notyet
1008 /*
1009 * We cannot have two video adapter of the same type; there must be
1010 * only one of color or mono adapter, or one each of them.
1011 */
1012 if (biosadapters > 1) {
1013 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
1014 & V_ADP_COLOR))
1015 /* we have two mono or color adapters!! */
1016 return (biosadapters = 0);
1017 }
1018 #endif
1019
1020 /*
1021 * Ensure a zero start address. The registers are w/o
1022 * for old hardware so it's too hard to relocate the active screen
1023 * memory.
1024 * This must be done before vga_save_state() for VGA.
1025 */
1026 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
1027 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1028 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
1029 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1030
1031 /* the video mode parameter table in EGA/VGA BIOS */
1032 /* NOTE: there can be only one EGA/VGA, wheather color or mono,
1033 * recognized by the video BIOS.
1034 */
1035 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
1036 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
1037 adp = &biosadapter[V_ADP_PRIMARY];
1038 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
1039 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
1040 adp = &biosadapter[V_ADP_SECONDARY];
1041 } else {
1042 adp = NULL;
1043 }
1044 bzero(mode_map, sizeof(mode_map));
1045 if (adp != NULL) {
1046 if (adp->va_type == KD_VGA) {
1047 vga_save_state(adp, &adpstate, sizeof(adpstate));
1048 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1049 mode_map[adp->va_initial_mode] = adpstate.regs;
1050 rows_offset = 1;
1051 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1052 if (video_mode_ptr == NULL) {
1053 mode_map[adp->va_initial_mode] = adpstate.regs;
1054 rows_offset = 1;
1055 } else {
1056 /* discard the table if we are not familiar with it... */
1057 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
1058 mp = get_mode_param(adp->va_initial_mode);
1059 if (mp != NULL)
1060 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
1061 switch (comp_adpregs(adpstate.regs, mp)) {
1062 case COMP_IDENTICAL:
1063 /*
1064 * OK, this parameter table looks reasonably familiar
1065 * to us...
1066 */
1067 /*
1068 * This is a kludge for Toshiba DynaBook SS433
1069 * whose BIOS video mode table entry has the actual #
1070 * of rows at the offset 1; BIOSes from other
1071 * manufacturers store the # of rows - 1 there. XXX
1072 */
1073 rows_offset = adpstate.regs[1] + 1 - mp[1];
1074 break;
1075
1076 case COMP_SIMILAR:
1077 /*
1078 * Not exactly the same, but similar enough to be
1079 * trusted. However, use the saved register values
1080 * for the initial mode and other modes which are
1081 * based on the initial mode.
1082 */
1083 mode_map[adp->va_initial_mode] = adpstate.regs;
1084 rows_offset = adpstate.regs[1] + 1 - mp[1];
1085 adpstate.regs[1] -= rows_offset - 1;
1086 break;
1087
1088 case COMP_DIFFERENT:
1089 default:
1090 /*
1091 * Don't use the parameter table in the BIOS, since
1092 * even the BIOS doesn't use it for the initial mode.
1093 * Restrict the tweaked modes to (in practice) 80x50
1094 * from 80x25 with 400 scan lines, since the only safe
1095 * tweak is changing the characters from 8x16 to 8x8.
1096 */
1097 video_mode_ptr = NULL;
1098 bzero(mode_map, sizeof(mode_map));
1099 mode_map[adp->va_initial_mode] = adpstate.regs;
1100 rows_offset = 1;
1101
1102 width = height = -1;
1103 for (i = 0; i < nitems(bios_vmode); ++i) {
1104 if (bios_vmode[i].vi_mode == adp->va_initial_mode) {
1105 width = bios_vmode[i].vi_width;
1106 height = bios_vmode[i].vi_height;
1107 break;
1108 }
1109 }
1110 for (i = 0; i < nitems(bios_vmode); ++i) {
1111 if (bios_vmode[i].vi_mode != adp->va_initial_mode &&
1112 map_mode_num(bios_vmode[i].vi_mode) ==
1113 adp->va_initial_mode &&
1114 (bios_vmode[i].vi_width != width ||
1115 bios_vmode[i].vi_height != 2 * height)) {
1116 bios_vmode[i].vi_mode = NA;
1117 }
1118 }
1119 break;
1120 }
1121 }
1122 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1123
1124 #ifndef VGA_NO_MODE_CHANGE
1125 adp->va_flags |= V_ADP_MODECHANGE;
1126 #endif
1127 #ifndef VGA_NO_FONT_LOADING
1128 adp->va_flags |= V_ADP_FONT;
1129 #endif
1130 } else if (adp->va_type == KD_EGA) {
1131 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1132 rows_offset = 1;
1133 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1134 if (video_mode_ptr == NULL) {
1135 rows_offset = 1;
1136 } else {
1137 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
1138 /* XXX how can one validate the EGA table... */
1139 mp = get_mode_param(adp->va_initial_mode);
1140 if (mp != NULL) {
1141 adp->va_flags |= V_ADP_MODECHANGE;
1142 #ifndef VGA_NO_FONT_LOADING
1143 adp->va_flags |= V_ADP_FONT;
1144 #endif
1145 rows_offset = 1;
1146 } else {
1147 /*
1148 * This is serious. We will not be able to switch video
1149 * modes at all...
1150 */
1151 video_mode_ptr = NULL;
1152 bzero(mode_map, sizeof(mode_map));
1153 rows_offset = 1;
1154 }
1155 }
1156 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1157 }
1158 }
1159
1160 /* remove conflicting modes if we have more than one adapter */
1161 if (biosadapters > 0) {
1162 for (i = 0; i < biosadapters; ++i) {
1163 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
1164 continue;
1165 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
1166 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1167 V_INFO_COLOR : 0);
1168 if ((biosadapter[i].va_type == KD_VGA)
1169 || (biosadapter[i].va_type == KD_EGA)) {
1170 biosadapter[i].va_io_base =
1171 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1172 IO_VGA : IO_MDA;
1173 biosadapter[i].va_io_size = 32;
1174 }
1175 }
1176 }
1177
1178 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
1179 /*
1180 * Attempt to determine the real character width for each mode. 9 wide
1181 * is supposed to be standard for EGA mono mode and most VGA text modes,
1182 * but some hardware doesn't support it, so dynamic configuration is
1183 * needed. Bit 0 in sequencer register 1 is supposed control the width
1184 * (set = 8), but this is unreliable too. Trust that 0 in the sequencer
1185 * bit means 9 wide after verifying that 9 is consistent with some CRTC
1186 * timing. The ratio (Horizontal Total) / (Horizontal Displayed) is
1187 * about 1.2 in all standard 9-wide modes and should be about 9/8 larger
1188 * again in similar 8-wide modes; in practice it is usually about 1.4
1189 * times larger.
1190 */
1191 for (i = 0; i < nitems(bios_vmode); ++i) {
1192 if (bios_vmode[i].vi_mem_model == V_INFO_MM_TEXT &&
1193 bios_vmode[i].vi_width != 90) {
1194 mp = get_mode_param(map_mode_num(bios_vmode[i].vi_mode));
1195 if (mp != NULL && !(mp[5] & 1) && mp[10] <= mp[11] * 125 / 100)
1196 bios_vmode[i].vi_flags |= V_INFO_CWIDTH9;
1197 }
1198 }
1199 #endif
1200
1201 /* buffer address */
1202 vga_get_info(&biosadapter[V_ADP_PRIMARY],
1203 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
1204 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1205 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
1206
1207 if (biosadapters > 1) {
1208 vga_get_info(&biosadapter[V_ADP_SECONDARY],
1209 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
1210 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1211 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
1212 }
1213
1214 /*
1215 * XXX: we should verify the following values for the primary adapter...
1216 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
1217 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
1218 * ? 0 : V_ADP_COLOR;
1219 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
1220 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
1221 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
1222 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
1223 */
1224
1225 return biosadapters;
1226 }
1227
1228 /* set the scan line length in pixel */
1229 static int
set_line_length(video_adapter_t * adp,int pixel)1230 set_line_length(video_adapter_t *adp, int pixel)
1231 {
1232 u_char *mp;
1233 int ppw; /* pixels per word */
1234 int bpl; /* bytes per line */
1235 int count;
1236
1237 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1238 return ENODEV;
1239 mp = get_mode_param(adp->va_mode);
1240 if (mp == NULL)
1241 return EINVAL;
1242
1243 switch (adp->va_info.vi_mem_model) {
1244 case V_INFO_MM_PLANAR:
1245 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1246 count = howmany(pixel, ppw)/2;
1247 bpl = (howmany(pixel, ppw)/2)*4;
1248 break;
1249 case V_INFO_MM_PACKED:
1250 count = (pixel + 7)/8;
1251 bpl = rounddown(pixel + 7, 8);
1252 break;
1253 case V_INFO_MM_TEXT:
1254 count = (pixel + 7)/8; /* columns */
1255 bpl = (pixel + 7)/8; /* columns */
1256 break;
1257 default:
1258 return ENODEV;
1259 }
1260
1261 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
1262 count *= 2; /* byte mode */
1263 outb(adp->va_crtc_addr, 0x13);
1264 outb(adp->va_crtc_addr + 1, count);
1265 adp->va_line_width = bpl;
1266
1267 return 0;
1268 }
1269
1270 static int
set_display_start(video_adapter_t * adp,int x,int y)1271 set_display_start(video_adapter_t *adp, int x, int y)
1272 {
1273 int off; /* byte offset (graphics mode)/word offset (text mode) */
1274 int poff; /* pixel offset */
1275 int roff; /* row offset */
1276 int ppb; /* pixels per byte */
1277
1278 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1279 x &= ~7;
1280 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
1281 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1282 off = y*adp->va_line_width + x/ppb;
1283 roff = 0;
1284 poff = x%ppb;
1285 } else {
1286 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1287 outb(TSIDX, 1);
1288 if (inb(TSREG) & 1)
1289 ppb = 9;
1290 else
1291 ppb = 8;
1292 } else {
1293 ppb = 8;
1294 }
1295 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
1296 roff = y%adp->va_info.vi_cheight;
1297 /* FIXME: is this correct? XXX */
1298 if (ppb == 8)
1299 poff = x%ppb;
1300 else
1301 poff = (x + 8)%ppb;
1302 }
1303
1304 /* start address */
1305 outb(adp->va_crtc_addr, 0xc); /* high */
1306 outb(adp->va_crtc_addr + 1, off >> 8);
1307 outb(adp->va_crtc_addr, 0xd); /* low */
1308 outb(adp->va_crtc_addr + 1, off & 0xff);
1309
1310 /* horizontal pel pan */
1311 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1312 inb(adp->va_crtc_addr + 6);
1313 outb(ATC, 0x13 | 0x20);
1314 outb(ATC, poff);
1315 inb(adp->va_crtc_addr + 6);
1316 outb(ATC, 0x20);
1317 }
1318
1319 /* preset raw scan */
1320 outb(adp->va_crtc_addr, 8);
1321 outb(adp->va_crtc_addr + 1, roff);
1322
1323 adp->va_disp_start.x = x;
1324 adp->va_disp_start.y = y;
1325 return 0;
1326 }
1327
1328 #ifndef VGA_NO_MODE_CHANGE
1329 #if defined(__i386__) || defined(__amd64__) /* XXX */
1330 static void
fill(int val,void * d,size_t size)1331 fill(int val, void *d, size_t size)
1332 {
1333 u_char *p = d;
1334
1335 while (size-- > 0)
1336 *p++ = val;
1337 }
1338 #endif /* __i386__ */
1339
1340 static void
filll_io(int val,vm_offset_t d,size_t size)1341 filll_io(int val, vm_offset_t d, size_t size)
1342 {
1343 while (size-- > 0) {
1344 writel(d, val);
1345 d += sizeof(u_int32_t);
1346 }
1347 }
1348 #endif /* !VGA_NO_MODE_CHANGE */
1349
1350 /* entry points */
1351
1352 #if 0
1353 static int
1354 vga_nop(void)
1355 {
1356 return 0;
1357 }
1358 #endif
1359
1360 static int
vga_error(void)1361 vga_error(void)
1362 {
1363 return ENODEV;
1364 }
1365
1366 static int
vga_probe(int unit,video_adapter_t ** adpp,void * arg,int flags)1367 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1368 {
1369 probe_adapters();
1370 if (unit >= biosadapters)
1371 return ENXIO;
1372
1373 *adpp = &biosadapter[unit];
1374
1375 return 0;
1376 }
1377
1378 static int
vga_init(int unit,video_adapter_t * adp,int flags)1379 vga_init(int unit, video_adapter_t *adp, int flags)
1380 {
1381 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
1382 return ENXIO;
1383
1384 if (!init_done(adp)) {
1385 /* nothing to do really... */
1386 adp->va_flags |= V_ADP_INITIALIZED;
1387 }
1388
1389 if (!config_done(adp)) {
1390 if (vid_register(adp) < 0)
1391 return ENXIO;
1392 adp->va_flags |= V_ADP_REGISTERED;
1393 }
1394 if (vga_sub_configure != NULL)
1395 (*vga_sub_configure)(0);
1396
1397 return 0;
1398 }
1399
1400 /*
1401 * get_info():
1402 * Return the video_info structure of the requested video mode.
1403 *
1404 * all adapters
1405 */
1406 static int
vga_get_info(video_adapter_t * adp,int mode,video_info_t * info)1407 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1408 {
1409 int i;
1410
1411 if (!vga_init_done)
1412 return ENXIO;
1413
1414 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
1415 #ifndef VGA_NO_MODE_CHANGE
1416 if (adp->va_flags & V_ADP_MODECHANGE) {
1417 /*
1418 * If the parameter table entry for this mode is not found,
1419 * the mode is not supported...
1420 */
1421 if (get_mode_param(mode) == NULL)
1422 return EINVAL;
1423 } else
1424 #endif /* VGA_NO_MODE_CHANGE */
1425 {
1426 /*
1427 * Even if we don't support video mode switching on this adapter,
1428 * the information on the initial (thus current) video mode
1429 * should be made available.
1430 */
1431 if (mode != adp->va_initial_mode)
1432 return EINVAL;
1433 }
1434
1435 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1436 if (bios_vmode[i].vi_mode == NA)
1437 continue;
1438 if (mode == bios_vmode[i].vi_mode) {
1439 *info = bios_vmode[i];
1440 /* XXX */
1441 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
1442 return 0;
1443 }
1444 }
1445 return EINVAL;
1446 }
1447
1448 /*
1449 * query_mode():
1450 * Find a video mode matching the requested parameters.
1451 * Fields filled with 0 are considered "don't care" fields and
1452 * match any modes.
1453 *
1454 * all adapters
1455 */
1456 static int
vga_query_mode(video_adapter_t * adp,video_info_t * info)1457 vga_query_mode(video_adapter_t *adp, video_info_t *info)
1458 {
1459 int i;
1460
1461 if (!vga_init_done)
1462 return ENXIO;
1463
1464 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1465 if (bios_vmode[i].vi_mode == NA)
1466 continue;
1467
1468 if ((info->vi_width != 0)
1469 && (info->vi_width != bios_vmode[i].vi_width))
1470 continue;
1471 if ((info->vi_height != 0)
1472 && (info->vi_height != bios_vmode[i].vi_height))
1473 continue;
1474 if ((info->vi_cwidth != 0)
1475 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
1476 continue;
1477 if ((info->vi_cheight != 0)
1478 && (info->vi_cheight != bios_vmode[i].vi_cheight))
1479 continue;
1480 if ((info->vi_depth != 0)
1481 && (info->vi_depth != bios_vmode[i].vi_depth))
1482 continue;
1483 if ((info->vi_planes != 0)
1484 && (info->vi_planes != bios_vmode[i].vi_planes))
1485 continue;
1486 /* XXX: should check pixel format, memory model */
1487 if ((info->vi_flags != 0)
1488 && (info->vi_flags != bios_vmode[i].vi_flags))
1489 continue;
1490
1491 /* verify if this mode is supported on this adapter */
1492 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
1493 continue;
1494 return 0;
1495 }
1496 return ENODEV;
1497 }
1498
1499 /*
1500 * set_mode():
1501 * Change the video mode.
1502 *
1503 * EGA/VGA
1504 */
1505
1506 #ifndef VGA_NO_MODE_CHANGE
1507 #ifdef VGA_WIDTH90
1508 static void
set_width90(adp_state_t * params)1509 set_width90(adp_state_t *params)
1510 {
1511 /*
1512 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
1513 * and alexv@sui.gda.itesm.mx.
1514 */
1515 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
1516 params->regs[10+0x0] = 0x6b;
1517 params->regs[10+0x1] = 0x59;
1518 params->regs[10+0x2] = 0x5a;
1519 params->regs[10+0x3] = 0x8e;
1520 params->regs[10+0x4] = 0x5e;
1521 params->regs[10+0x5] = 0x8a;
1522 params->regs[10+0x13] = 45;
1523 params->regs[35+0x13] = 0;
1524 }
1525 #endif /* VGA_WIDTH90 */
1526 #endif /* !VGA_NO_MODE_CHANGE */
1527
1528 static int
vga_set_mode(video_adapter_t * adp,int mode)1529 vga_set_mode(video_adapter_t *adp, int mode)
1530 {
1531 #ifndef VGA_NO_MODE_CHANGE
1532 video_info_t info;
1533 adp_state_t params;
1534
1535 prologue(adp, V_ADP_MODECHANGE, ENODEV);
1536
1537 mode = map_gen_mode_num(adp->va_type,
1538 adp->va_flags & V_ADP_COLOR, mode);
1539 if (vga_get_info(adp, mode, &info))
1540 return EINVAL;
1541
1542 #if VGA_DEBUG > 1
1543 printf("vga_set_mode(): setting mode %d\n", mode);
1544 #endif
1545
1546 params.sig = V_STATE_SIG;
1547 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1548
1549 switch (mode) {
1550 #ifdef VGA_WIDTH90
1551 case M_VGA_C90x60: case M_VGA_M90x60:
1552 set_width90(¶ms);
1553 /* FALLTHROUGH */
1554 #endif
1555 case M_VGA_C80x60: case M_VGA_M80x60:
1556 params.regs[2] = 0x08;
1557 params.regs[19] = 0x47;
1558 goto special_480l;
1559
1560 #ifdef VGA_WIDTH90
1561 case M_VGA_C90x30: case M_VGA_M90x30:
1562 set_width90(¶ms);
1563 /* FALLTHROUGH */
1564 #endif
1565 case M_VGA_C80x30: case M_VGA_M80x30:
1566 params.regs[19] = 0x4f;
1567 special_480l:
1568 params.regs[9] |= 0xc0;
1569 params.regs[16] = 0x08;
1570 params.regs[17] = 0x3e;
1571 params.regs[26] = 0xea;
1572 params.regs[28] = 0xdf;
1573 params.regs[31] = 0xe7;
1574 params.regs[32] = 0x04;
1575 goto setup_mode;
1576
1577 #ifdef VGA_WIDTH90
1578 case M_VGA_C90x43: case M_VGA_M90x43:
1579 set_width90(¶ms);
1580 /* FALLTHROUGH */
1581 #endif
1582 case M_ENH_C80x43: case M_ENH_B80x43:
1583 params.regs[28] = 87;
1584 goto special_80x50;
1585
1586 #ifdef VGA_WIDTH90
1587 case M_VGA_C90x50: case M_VGA_M90x50:
1588 set_width90(¶ms);
1589 /* FALLTHROUGH */
1590 #endif
1591 case M_VGA_C80x50: case M_VGA_M80x50:
1592 special_80x50:
1593 params.regs[2] = 8;
1594 params.regs[19] = 7;
1595 goto setup_mode;
1596
1597 #ifdef VGA_WIDTH90
1598 case M_VGA_C90x25: case M_VGA_M90x25:
1599 set_width90(¶ms);
1600 /* FALLTHROUGH */
1601 #endif
1602 case M_VGA_C40x25: case M_VGA_C80x25:
1603 case M_VGA_M80x25:
1604 case M_B40x25: case M_C40x25:
1605 case M_B80x25: case M_C80x25:
1606 case M_ENH_B40x25: case M_ENH_C40x25:
1607 case M_ENH_B80x25: case M_ENH_C80x25:
1608 case M_EGAMONO80x25:
1609
1610 setup_mode:
1611 vga_load_state(adp, ¶ms);
1612 break;
1613
1614 case M_VGA_MODEX:
1615 /* "unchain" the VGA mode */
1616 params.regs[5-1+0x04] &= 0xf7;
1617 params.regs[5-1+0x04] |= 0x04;
1618 /* turn off doubleword mode */
1619 params.regs[10+0x14] &= 0xbf;
1620 /* turn off word addressing */
1621 params.regs[10+0x17] |= 0x40;
1622 /* set logical screen width */
1623 params.regs[10+0x13] = 80;
1624 /* set 240 lines */
1625 params.regs[10+0x11] = 0x2c;
1626 params.regs[10+0x06] = 0x0d;
1627 params.regs[10+0x07] = 0x3e;
1628 params.regs[10+0x10] = 0xea;
1629 params.regs[10+0x11] = 0xac;
1630 params.regs[10+0x12] = 0xdf;
1631 params.regs[10+0x15] = 0xe7;
1632 params.regs[10+0x16] = 0x06;
1633 /* set vertical sync polarity to reflect aspect ratio */
1634 params.regs[9] = 0xe3;
1635 goto setup_grmode;
1636
1637 case M_BG320: case M_CG320: case M_BG640:
1638 case M_CG320_D: case M_CG640_E:
1639 case M_CG640x350: case M_ENH_CG640:
1640 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1641
1642 setup_grmode:
1643 vga_load_state(adp, ¶ms);
1644 break;
1645
1646 default:
1647 return EINVAL;
1648 }
1649
1650 adp->va_mode = mode;
1651 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1652 update_adapter_info(adp, &info);
1653
1654 /* move hardware cursor out of the way */
1655 vidd_set_hw_cursor(adp, -1, -1);
1656
1657 return 0;
1658 #else /* VGA_NO_MODE_CHANGE */
1659 return ENODEV;
1660 #endif /* VGA_NO_MODE_CHANGE */
1661 }
1662
1663 #ifndef VGA_NO_FONT_LOADING
1664
1665 static void
set_font_mode(video_adapter_t * adp,u_char * buf)1666 set_font_mode(video_adapter_t *adp, u_char *buf)
1667 {
1668 u_char *mp;
1669 int s;
1670
1671 s = splhigh();
1672
1673 /* save register values */
1674 if (adp->va_type == KD_VGA) {
1675 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1676 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1677 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1678 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1679 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1680 inb(adp->va_crtc_addr + 6);
1681 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1682 } else /* if (adp->va_type == KD_EGA) */ {
1683 /*
1684 * EGA cannot be read; copy parameters from the mode parameter
1685 * table.
1686 */
1687 mp = get_mode_param(adp->va_mode);
1688 buf[0] = mp[5 + 0x02 - 1];
1689 buf[1] = mp[5 + 0x04 - 1];
1690 buf[2] = mp[55 + 0x04];
1691 buf[3] = mp[55 + 0x05];
1692 buf[4] = mp[55 + 0x06];
1693 buf[5] = mp[35 + 0x10];
1694 }
1695
1696 /* setup vga for loading fonts */
1697 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1698 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1699 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1700 outb(ATC, 0x20); /* enable palette */
1701
1702 #ifdef VGA_SLOW_IOACCESS
1703 #ifdef VGA_ALT_SEQACCESS
1704 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1705 #endif
1706 outb(TSIDX, 0x02); outb(TSREG, 0x04);
1707 outb(TSIDX, 0x04); outb(TSREG, 0x07);
1708 #ifdef VGA_ALT_SEQACCESS
1709 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1710 #endif
1711 outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
1712 outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
1713 outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
1714 #else /* VGA_SLOW_IOACCESS */
1715 #ifdef VGA_ALT_SEQACCESS
1716 outw(TSIDX, 0x0100);
1717 #endif
1718 outw(TSIDX, 0x0402);
1719 outw(TSIDX, 0x0704);
1720 #ifdef VGA_ALT_SEQACCESS
1721 outw(TSIDX, 0x0300);
1722 #endif
1723 outw(GDCIDX, 0x0204);
1724 outw(GDCIDX, 0x0005);
1725 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1726 #endif /* VGA_SLOW_IOACCESS */
1727
1728 splx(s);
1729 }
1730
1731 static void
set_normal_mode(video_adapter_t * adp,u_char * buf)1732 set_normal_mode(video_adapter_t *adp, u_char *buf)
1733 {
1734 int s;
1735
1736 s = splhigh();
1737
1738 /* setup vga for normal operation mode again */
1739 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1740 outb(ATC, 0x10); outb(ATC, buf[5]);
1741 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1742 outb(ATC, 0x20); /* enable palette */
1743
1744 #ifdef VGA_SLOW_IOACCESS
1745 #ifdef VGA_ALT_SEQACCESS
1746 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1747 #endif
1748 outb(TSIDX, 0x02); outb(TSREG, buf[0]);
1749 outb(TSIDX, 0x04); outb(TSREG, buf[1]);
1750 #ifdef VGA_ALT_SEQACCESS
1751 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1752 #endif
1753 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
1754 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
1755 if (adp->va_crtc_addr == MONO_CRTC) {
1756 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
1757 } else {
1758 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
1759 }
1760 #else /* VGA_SLOW_IOACCESS */
1761 #ifdef VGA_ALT_SEQACCESS
1762 outw(TSIDX, 0x0100);
1763 #endif
1764 outw(TSIDX, 0x0002 | (buf[0] << 8));
1765 outw(TSIDX, 0x0004 | (buf[1] << 8));
1766 #ifdef VGA_ALT_SEQACCESS
1767 outw(TSIDX, 0x0300);
1768 #endif
1769 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1770 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1771 if (adp->va_crtc_addr == MONO_CRTC)
1772 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
1773 else
1774 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1775 #endif /* VGA_SLOW_IOACCESS */
1776
1777 splx(s);
1778 }
1779
1780 #endif /* VGA_NO_FONT_LOADING */
1781
1782 /*
1783 * save_font():
1784 * Read the font data in the requested font page from the video adapter.
1785 *
1786 * EGA/VGA
1787 */
1788 static int
vga_save_font(video_adapter_t * adp,int page,int fontsize,int fontwidth,u_char * data,int ch,int count)1789 vga_save_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1790 u_char *data, int ch, int count)
1791 {
1792 #ifndef VGA_NO_FONT_LOADING
1793 u_char buf[PARAM_BUFSIZE];
1794 vm_offset_t segment;
1795 int c;
1796 #ifdef VGA_ALT_SEQACCESS
1797 int s;
1798 u_char val = 0;
1799 #endif
1800
1801 prologue(adp, V_ADP_FONT, ENODEV);
1802
1803 if (fontsize < 14) {
1804 /* FONT_8 */
1805 fontsize = 8;
1806 } else if (fontsize >= 32) {
1807 fontsize = 32;
1808 } else if (fontsize >= 16) {
1809 /* FONT_16 */
1810 fontsize = 16;
1811 } else {
1812 /* FONT_14 */
1813 fontsize = 14;
1814 }
1815
1816 if (page < 0 || page >= 8 || fontwidth != 8)
1817 return EINVAL;
1818 segment = FONT_BUF + 0x4000*page;
1819 if (page > 3)
1820 segment -= 0xe000;
1821
1822 #ifdef VGA_ALT_SEQACCESS
1823 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1824 s = splhigh();
1825 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1826 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1827 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1828 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1829 splx(s);
1830 }
1831 #endif
1832
1833 set_font_mode(adp, buf);
1834 if (fontsize == 32) {
1835 bcopy_fromio((uintptr_t)segment + ch*32, data, fontsize*count);
1836 } else {
1837 for (c = ch; count > 0; ++c, --count) {
1838 bcopy_fromio((uintptr_t)segment + c*32, data, fontsize);
1839 data += fontsize;
1840 }
1841 }
1842 set_normal_mode(adp, buf);
1843
1844 #ifdef VGA_ALT_SEQACCESS
1845 if (adp->va_type == KD_VGA) {
1846 s = splhigh();
1847 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1848 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1849 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1850 splx(s);
1851 }
1852 #endif
1853
1854 return 0;
1855 #else /* VGA_NO_FONT_LOADING */
1856 return ENODEV;
1857 #endif /* VGA_NO_FONT_LOADING */
1858 }
1859
1860 /*
1861 * load_font():
1862 * Set the font data in the requested font page.
1863 * NOTE: it appears that some recent video adapters do not support
1864 * the font page other than 0... XXX
1865 *
1866 * EGA/VGA
1867 */
1868 static int
vga_load_font(video_adapter_t * adp,int page,int fontsize,int fontwidth,u_char * data,int ch,int count)1869 vga_load_font(video_adapter_t *adp, int page, int fontsize, int fontwidth,
1870 u_char *data, int ch, int count)
1871 {
1872 #ifndef VGA_NO_FONT_LOADING
1873 u_char buf[PARAM_BUFSIZE];
1874 vm_offset_t segment;
1875 int c;
1876 #ifdef VGA_ALT_SEQACCESS
1877 int s;
1878 u_char val = 0;
1879 #endif
1880
1881 prologue(adp, V_ADP_FONT, ENODEV);
1882
1883 if (fontsize < 14) {
1884 /* FONT_8 */
1885 fontsize = 8;
1886 } else if (fontsize >= 32) {
1887 fontsize = 32;
1888 } else if (fontsize >= 16) {
1889 /* FONT_16 */
1890 fontsize = 16;
1891 } else {
1892 /* FONT_14 */
1893 fontsize = 14;
1894 }
1895
1896 if (page < 0 || page >= 8 || fontwidth != 8)
1897 return EINVAL;
1898 segment = FONT_BUF + 0x4000*page;
1899 if (page > 3)
1900 segment -= 0xe000;
1901
1902 #ifdef VGA_ALT_SEQACCESS
1903 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1904 s = splhigh();
1905 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1906 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1907 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1908 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1909 splx(s);
1910 }
1911 #endif
1912
1913 set_font_mode(adp, buf);
1914 if (fontsize == 32) {
1915 bcopy_toio(data, (uintptr_t)segment + ch*32, fontsize*count);
1916 } else {
1917 for (c = ch; count > 0; ++c, --count) {
1918 bcopy_toio(data, (uintptr_t)segment + c*32, fontsize);
1919 data += fontsize;
1920 }
1921 }
1922 set_normal_mode(adp, buf);
1923
1924 #ifdef VGA_ALT_SEQACCESS
1925 if (adp->va_type == KD_VGA) {
1926 s = splhigh();
1927 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1928 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1929 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1930 splx(s);
1931 }
1932 #endif
1933
1934 return 0;
1935 #else /* VGA_NO_FONT_LOADING */
1936 return ENODEV;
1937 #endif /* VGA_NO_FONT_LOADING */
1938 }
1939
1940 /*
1941 * show_font():
1942 * Activate the requested font page.
1943 * NOTE: it appears that some recent video adapters do not support
1944 * the font page other than 0... XXX
1945 *
1946 * EGA/VGA
1947 */
1948 static int
vga_show_font(video_adapter_t * adp,int page)1949 vga_show_font(video_adapter_t *adp, int page)
1950 {
1951 #ifndef VGA_NO_FONT_LOADING
1952 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1953 int s;
1954
1955 prologue(adp, V_ADP_FONT, ENODEV);
1956 if (page < 0 || page >= 8)
1957 return EINVAL;
1958
1959 s = splhigh();
1960 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1961 splx(s);
1962
1963 return 0;
1964 #else /* VGA_NO_FONT_LOADING */
1965 return ENODEV;
1966 #endif /* VGA_NO_FONT_LOADING */
1967 }
1968
1969 /*
1970 * save_palette():
1971 * Read DAC values. The values have expressed in 8 bits.
1972 *
1973 * VGA
1974 */
1975 static int
vga_save_palette(video_adapter_t * adp,u_char * palette)1976 vga_save_palette(video_adapter_t *adp, u_char *palette)
1977 {
1978 int bits;
1979 int i;
1980
1981 prologue(adp, V_ADP_PALETTE, ENODEV);
1982
1983 /*
1984 * We store 8 bit values in the palette buffer, while the standard
1985 * VGA has 6 bit DAC .
1986 */
1987 outb(PALRADR, 0x00);
1988 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
1989 for (i = 0; i < 256*3; ++i)
1990 palette[i] = inb(PALDATA) << bits;
1991 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1992 return 0;
1993 }
1994
1995 static int
vga_save_palette2(video_adapter_t * adp,int base,int count,u_char * r,u_char * g,u_char * b)1996 vga_save_palette2(video_adapter_t *adp, int base, int count,
1997 u_char *r, u_char *g, u_char *b)
1998 {
1999 int bits;
2000 int i;
2001
2002 prologue(adp, V_ADP_PALETTE, ENODEV);
2003
2004 outb(PALRADR, base);
2005 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
2006 for (i = 0; i < count; ++i) {
2007 r[i] = inb(PALDATA) << bits;
2008 g[i] = inb(PALDATA) << bits;
2009 b[i] = inb(PALDATA) << bits;
2010 }
2011 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2012 return 0;
2013 }
2014
2015 /*
2016 * load_palette():
2017 * Set DAC values.
2018 *
2019 * VGA
2020 */
2021 static int
vga_load_palette(video_adapter_t * adp,u_char * palette)2022 vga_load_palette(video_adapter_t *adp, u_char *palette)
2023 {
2024 int bits;
2025 int i;
2026
2027 prologue(adp, V_ADP_PALETTE, ENODEV);
2028
2029 outb(PIXMASK, 0xff); /* no pixelmask */
2030 outb(PALWADR, 0x00);
2031 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
2032 for (i = 0; i < 256*3; ++i)
2033 outb(PALDATA, palette[i] >> bits);
2034 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2035 outb(ATC, 0x20); /* enable palette */
2036 return 0;
2037 }
2038
2039 static int
vga_load_palette2(video_adapter_t * adp,int base,int count,u_char * r,u_char * g,u_char * b)2040 vga_load_palette2(video_adapter_t *adp, int base, int count,
2041 u_char *r, u_char *g, u_char *b)
2042 {
2043 int bits;
2044 int i;
2045
2046 prologue(adp, V_ADP_PALETTE, ENODEV);
2047
2048 outb(PIXMASK, 0xff); /* no pixelmask */
2049 outb(PALWADR, base);
2050 bits = (adp->va_flags & V_ADP_DAC8) != 0 ? 0 : 2;
2051 for (i = 0; i < count; ++i) {
2052 outb(PALDATA, r[i] >> bits);
2053 outb(PALDATA, g[i] >> bits);
2054 outb(PALDATA, b[i] >> bits);
2055 }
2056 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2057 outb(ATC, 0x20); /* enable palette */
2058 return 0;
2059 }
2060
2061 /*
2062 * set_border():
2063 * Change the border color.
2064 *
2065 * CGA/EGA/VGA
2066 */
2067 static int
vga_set_border(video_adapter_t * adp,int color)2068 vga_set_border(video_adapter_t *adp, int color)
2069 {
2070 prologue(adp, V_ADP_BORDER, ENODEV);
2071
2072 switch (adp->va_type) {
2073 case KD_EGA:
2074 case KD_VGA:
2075 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
2076 outb(ATC, 0x31); outb(ATC, color & 0xff);
2077 break;
2078 case KD_CGA:
2079 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
2080 break;
2081 case KD_MONO:
2082 case KD_HERCULES:
2083 default:
2084 break;
2085 }
2086 return 0;
2087 }
2088
2089 /*
2090 * save_state():
2091 * Read video register values.
2092 * NOTE: this function only reads the standard EGA/VGA registers.
2093 * any extra/extended registers of SVGA adapters are not saved.
2094 *
2095 * VGA
2096 */
2097 static int
vga_save_state(video_adapter_t * adp,void * p,size_t size)2098 vga_save_state(video_adapter_t *adp, void *p, size_t size)
2099 {
2100 video_info_t info;
2101 u_char *buf;
2102 int crtc_addr;
2103 int i, j;
2104 int s;
2105
2106 if (size == 0) {
2107 /* return the required buffer size */
2108 prologue(adp, V_ADP_STATESAVE, 0);
2109 return sizeof(adp_state_t);
2110 } else {
2111 prologue(adp, V_ADP_STATESAVE, ENODEV);
2112 if (size < sizeof(adp_state_t))
2113 return EINVAL;
2114 }
2115
2116 ((adp_state_t *)p)->sig = V_STATE_SIG;
2117 buf = ((adp_state_t *)p)->regs;
2118 bzero(buf, V_MODE_PARAM_SIZE);
2119 crtc_addr = adp->va_crtc_addr;
2120
2121 s = splhigh();
2122
2123 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2124 for (i = 0, j = 5; i < 4; i++) {
2125 outb(TSIDX, i + 1);
2126 buf[j++] = inb(TSREG);
2127 }
2128 buf[9] = inb(MISC + 10); /* dot-clock */
2129 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2130
2131 for (i = 0, j = 10; i < 25; i++) { /* crtc */
2132 outb(crtc_addr, i);
2133 buf[j++] = inb(crtc_addr + 1);
2134 }
2135 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
2136 inb(crtc_addr + 6); /* reset flip-flop */
2137 outb(ATC, i);
2138 buf[j++] = inb(ATC + 1);
2139 }
2140 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
2141 outb(GDCIDX, i);
2142 buf[j++] = inb(GDCREG);
2143 }
2144 inb(crtc_addr + 6); /* reset flip-flop */
2145 outb(ATC, 0x20); /* enable palette */
2146
2147 splx(s);
2148
2149 #if 1
2150 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
2151 if (info.vi_flags & V_INFO_GRAPHICS) {
2152 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
2153 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
2154 } else {
2155 buf[0] = info.vi_width; /* COLS */
2156 buf[1] = info.vi_height - 1; /* ROWS */
2157 }
2158 buf[2] = info.vi_cheight; /* POINTS */
2159 }
2160 #else
2161 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
2162 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
2163 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
2164 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
2165 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
2166 #endif
2167
2168 return 0;
2169 }
2170
2171 /*
2172 * load_state():
2173 * Set video registers at once.
2174 * NOTE: this function only updates the standard EGA/VGA registers.
2175 * any extra/extended registers of SVGA adapters are not changed.
2176 *
2177 * EGA/VGA
2178 */
2179 static int
vga_load_state(video_adapter_t * adp,void * p)2180 vga_load_state(video_adapter_t *adp, void *p)
2181 {
2182 u_char *buf;
2183 int crtc_addr;
2184 int s;
2185 int i;
2186
2187 prologue(adp, V_ADP_STATELOAD, ENODEV);
2188 if (((adp_state_t *)p)->sig != V_STATE_SIG)
2189 return EINVAL;
2190
2191 buf = ((adp_state_t *)p)->regs;
2192 crtc_addr = adp->va_crtc_addr;
2193
2194 #if VGA_DEBUG > 1
2195 dump_buffer(buf, V_MODE_PARAM_SIZE);
2196 #endif
2197
2198 s = splhigh();
2199
2200 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2201 for (i = 0; i < 4; ++i) { /* program sequencer */
2202 outb(TSIDX, i + 1);
2203 outb(TSREG, buf[i + 5]);
2204 }
2205 outb(MISC, buf[9]); /* set dot-clock */
2206 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2207 outb(crtc_addr, 0x11);
2208 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
2209 for (i = 0; i < 25; ++i) { /* program crtc */
2210 outb(crtc_addr, i);
2211 outb(crtc_addr + 1, buf[i + 10]);
2212 }
2213 inb(crtc_addr+6); /* reset flip-flop */
2214 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
2215 outb(ATC, i);
2216 outb(ATC, buf[i + 35]);
2217 }
2218 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
2219 outb(GDCIDX, i);
2220 outb(GDCREG, buf[i + 55]);
2221 }
2222 inb(crtc_addr + 6); /* reset flip-flop */
2223 outb(ATC, 0x20); /* enable palette */
2224
2225 #ifdef notyet /* a temporary workaround for kernel panic, XXX */
2226 #ifndef VGA_NO_BIOS
2227 if (adp->va_unit == V_ADP_PRIMARY) {
2228 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
2229 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
2230 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
2231 #if 0
2232 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
2233 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
2234 #endif
2235 }
2236 #endif /* VGA_NO_BIOS */
2237 #endif /* notyet */
2238
2239 splx(s);
2240 return 0;
2241 }
2242
2243 /*
2244 * set_origin():
2245 * Change the origin (window mapping) of the banked frame buffer.
2246 */
2247 static int
vga_set_origin(video_adapter_t * adp,off_t offset)2248 vga_set_origin(video_adapter_t *adp, off_t offset)
2249 {
2250 /*
2251 * The standard video modes do not require window mapping;
2252 * always return error.
2253 */
2254 return ENODEV;
2255 }
2256
2257 /*
2258 * read_hw_cursor():
2259 * Read the position of the hardware text cursor.
2260 *
2261 * all adapters
2262 */
2263 static int
vga_read_hw_cursor(video_adapter_t * adp,int * col,int * row)2264 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
2265 {
2266 u_int16_t off;
2267 int s;
2268
2269 if (!vga_init_done)
2270 return ENXIO;
2271
2272 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2273 return ENODEV;
2274
2275 s = spltty();
2276 outb(adp->va_crtc_addr, 14);
2277 off = inb(adp->va_crtc_addr + 1);
2278 outb(adp->va_crtc_addr, 15);
2279 off = (off << 8) | inb(adp->va_crtc_addr + 1);
2280 splx(s);
2281
2282 *row = off / adp->va_info.vi_width;
2283 *col = off % adp->va_info.vi_width;
2284
2285 return 0;
2286 }
2287
2288 /*
2289 * set_hw_cursor():
2290 * Move the hardware text cursor. If col and row are both -1,
2291 * the cursor won't be shown.
2292 *
2293 * all adapters
2294 */
2295 static int
vga_set_hw_cursor(video_adapter_t * adp,int col,int row)2296 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
2297 {
2298 u_int16_t off;
2299 int s;
2300
2301 if (!vga_init_done)
2302 return ENXIO;
2303
2304 if ((col == -1) && (row == -1)) {
2305 off = -1;
2306 } else {
2307 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2308 return ENODEV;
2309 off = row*adp->va_info.vi_width + col;
2310 }
2311
2312 s = spltty();
2313 outb(adp->va_crtc_addr, 14);
2314 outb(adp->va_crtc_addr + 1, off >> 8);
2315 outb(adp->va_crtc_addr, 15);
2316 outb(adp->va_crtc_addr + 1, off & 0x00ff);
2317 splx(s);
2318
2319 return 0;
2320 }
2321
2322 /*
2323 * set_hw_cursor_shape():
2324 * Change the shape of the hardware text cursor. If the height is
2325 * zero or negative, the cursor won't be shown.
2326 *
2327 * all adapters
2328 */
2329 static int
vga_set_hw_cursor_shape(video_adapter_t * adp,int base,int height,int celsize,int blink)2330 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
2331 int celsize, int blink)
2332 {
2333 int s;
2334
2335 if (!vga_init_done)
2336 return ENXIO;
2337
2338 s = spltty();
2339 switch (adp->va_type) {
2340 case KD_VGA:
2341 case KD_CGA:
2342 case KD_MONO:
2343 case KD_HERCULES:
2344 default:
2345 if (height <= 0) {
2346 /* make the cursor invisible */
2347 outb(adp->va_crtc_addr, 10);
2348 outb(adp->va_crtc_addr + 1, 32);
2349 outb(adp->va_crtc_addr, 11);
2350 outb(adp->va_crtc_addr + 1, 0);
2351 } else {
2352 outb(adp->va_crtc_addr, 10);
2353 outb(adp->va_crtc_addr + 1, celsize - base - height);
2354 outb(adp->va_crtc_addr, 11);
2355 outb(adp->va_crtc_addr + 1, celsize - base - 1);
2356 }
2357 break;
2358 case KD_EGA:
2359 if (height <= 0) {
2360 /* make the cursor invisible */
2361 outb(adp->va_crtc_addr, 10);
2362 outb(adp->va_crtc_addr + 1, celsize);
2363 outb(adp->va_crtc_addr, 11);
2364 outb(adp->va_crtc_addr + 1, 0);
2365 } else {
2366 outb(adp->va_crtc_addr, 10);
2367 outb(adp->va_crtc_addr + 1, celsize - base - height);
2368 outb(adp->va_crtc_addr, 11);
2369 outb(adp->va_crtc_addr + 1, celsize - base);
2370 }
2371 break;
2372 }
2373 splx(s);
2374
2375 return 0;
2376 }
2377
2378 /*
2379 * blank_display()
2380 * Put the display in power save/power off mode.
2381 *
2382 * all adapters
2383 */
2384 static int
vga_blank_display(video_adapter_t * adp,int mode)2385 vga_blank_display(video_adapter_t *adp, int mode)
2386 {
2387 u_char val;
2388 int s;
2389
2390 s = splhigh();
2391 switch (adp->va_type) {
2392 case KD_VGA:
2393 switch (mode) {
2394 case V_DISPLAY_SUSPEND:
2395 case V_DISPLAY_STAND_BY:
2396 outb(TSIDX, 0x01);
2397 val = inb(TSREG);
2398 outb(TSIDX, 0x01);
2399 outb(TSREG, val | 0x20);
2400 outb(adp->va_crtc_addr, 0x17);
2401 val = inb(adp->va_crtc_addr + 1);
2402 outb(adp->va_crtc_addr + 1, val & ~0x80);
2403 break;
2404 case V_DISPLAY_BLANK:
2405 outb(TSIDX, 0x01);
2406 val = inb(TSREG);
2407 outb(TSIDX, 0x01);
2408 outb(TSREG, val | 0x20);
2409 break;
2410 case V_DISPLAY_ON:
2411 outb(TSIDX, 0x01);
2412 val = inb(TSREG);
2413 outb(TSIDX, 0x01);
2414 outb(TSREG, val & 0xDF);
2415 outb(adp->va_crtc_addr, 0x17);
2416 val = inb(adp->va_crtc_addr + 1);
2417 outb(adp->va_crtc_addr + 1, val | 0x80);
2418 break;
2419 }
2420 break;
2421
2422 case KD_EGA:
2423 /* no support yet */
2424 splx(s);
2425 return ENODEV;
2426
2427 case KD_CGA:
2428 switch (mode) {
2429 case V_DISPLAY_SUSPEND:
2430 case V_DISPLAY_STAND_BY:
2431 case V_DISPLAY_BLANK:
2432 outb(adp->va_crtc_addr + 4, 0x25);
2433 break;
2434 case V_DISPLAY_ON:
2435 outb(adp->va_crtc_addr + 4, 0x2d);
2436 break;
2437 }
2438 break;
2439
2440 case KD_MONO:
2441 case KD_HERCULES:
2442 switch (mode) {
2443 case V_DISPLAY_SUSPEND:
2444 case V_DISPLAY_STAND_BY:
2445 case V_DISPLAY_BLANK:
2446 outb(adp->va_crtc_addr + 4, 0x21);
2447 break;
2448 case V_DISPLAY_ON:
2449 outb(adp->va_crtc_addr + 4, 0x29);
2450 break;
2451 }
2452 break;
2453 default:
2454 break;
2455 }
2456 splx(s);
2457
2458 return 0;
2459 }
2460
2461 /*
2462 * mmap():
2463 * Mmap frame buffer.
2464 *
2465 * all adapters
2466 */
2467 static int
vga_mmap_buf(video_adapter_t * adp,vm_ooffset_t offset,vm_paddr_t * paddr,int prot,vm_memattr_t * memattr)2468 vga_mmap_buf(video_adapter_t *adp, vm_ooffset_t offset, vm_paddr_t *paddr,
2469 int prot, vm_memattr_t *memattr)
2470 {
2471 if (adp->va_info.vi_flags & V_INFO_LINEAR)
2472 return -1;
2473
2474 #if VGA_DEBUG > 0
2475 printf("vga_mmap_buf(): window:0x%jx, offset:0x%jx\n",
2476 (uintmax_t)adp->va_info.vi_window, (uintmax_t)offset);
2477 #endif
2478
2479 /* XXX: is this correct? */
2480 if (offset > adp->va_window_size - PAGE_SIZE)
2481 return -1;
2482
2483 *paddr = adp->va_info.vi_window + offset;
2484 return 0;
2485 }
2486
2487 #ifndef VGA_NO_MODE_CHANGE
2488
2489 static void
planar_fill(video_adapter_t * adp,int val)2490 planar_fill(video_adapter_t *adp, int val)
2491 {
2492 int length;
2493 int at; /* position in the frame buffer */
2494 int l;
2495
2496 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2497 outw(GDCIDX, 0x0003); /* data rotate/function select */
2498 outw(GDCIDX, 0x0f01); /* set/reset enable */
2499 outw(GDCIDX, 0xff08); /* bit mask */
2500 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2501 at = 0;
2502 length = adp->va_line_width*adp->va_info.vi_height;
2503 while (length > 0) {
2504 l = imin(length, adp->va_window_size);
2505 vidd_set_win_org(adp, at);
2506 bzero_io(adp->va_window, l);
2507 length -= l;
2508 at += l;
2509 }
2510 outw(GDCIDX, 0x0000); /* set/reset */
2511 outw(GDCIDX, 0x0001); /* set/reset enable */
2512 }
2513
2514 static void
packed_fill(video_adapter_t * adp,int val)2515 packed_fill(video_adapter_t *adp, int val)
2516 {
2517 int length;
2518 int at; /* position in the frame buffer */
2519 int l;
2520
2521 at = 0;
2522 length = adp->va_line_width*adp->va_info.vi_height;
2523 while (length > 0) {
2524 l = imin(length, adp->va_window_size);
2525 vidd_set_win_org(adp, at);
2526 fill_io(val, adp->va_window, l);
2527 length -= l;
2528 at += l;
2529 }
2530 }
2531
2532 static void
direct_fill(video_adapter_t * adp,int val)2533 direct_fill(video_adapter_t *adp, int val)
2534 {
2535 int length;
2536 int at; /* position in the frame buffer */
2537 int l;
2538
2539 at = 0;
2540 length = adp->va_line_width*adp->va_info.vi_height;
2541 while (length > 0) {
2542 l = imin(length, adp->va_window_size);
2543 vidd_set_win_org(adp, at);
2544 switch (adp->va_info.vi_pixel_size) {
2545 case sizeof(u_int16_t):
2546 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
2547 break;
2548 case 3:
2549 /* FIXME */
2550 break;
2551 case sizeof(u_int32_t):
2552 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
2553 break;
2554 }
2555 length -= l;
2556 at += l;
2557 }
2558 }
2559
2560 static int
vga_clear(video_adapter_t * adp)2561 vga_clear(video_adapter_t *adp)
2562 {
2563 switch (adp->va_info.vi_mem_model) {
2564 case V_INFO_MM_TEXT:
2565 /* do nothing? XXX */
2566 break;
2567 case V_INFO_MM_PLANAR:
2568 planar_fill(adp, 0);
2569 break;
2570 case V_INFO_MM_PACKED:
2571 packed_fill(adp, 0);
2572 break;
2573 case V_INFO_MM_DIRECT:
2574 direct_fill(adp, 0);
2575 break;
2576 }
2577 return 0;
2578 }
2579
2580 #ifdef notyet
2581 static void
planar_fill_rect(video_adapter_t * adp,int val,int x,int y,int cx,int cy)2582 planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2583 {
2584 int banksize;
2585 int bank;
2586 int pos;
2587 int offset; /* offset within window */
2588 int bx;
2589 int l;
2590
2591 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2592 outw(GDCIDX, 0x0003); /* data rotate/function select */
2593 outw(GDCIDX, 0x0f01); /* set/reset enable */
2594 outw(GDCIDX, 0xff08); /* bit mask */
2595 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2596
2597 banksize = adp->va_window_size;
2598 bank = -1;
2599 while (cy > 0) {
2600 pos = adp->va_line_width*y + x/8;
2601 if (bank != pos/banksize) {
2602 vidd_set_win_org(adp, pos);
2603 bank = pos/banksize;
2604 }
2605 offset = pos%banksize;
2606 bx = (x + cx)/8 - x/8;
2607 if (x % 8) {
2608 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
2609 writeb(adp->va_window + offset, 0);
2610 ++offset;
2611 --bx;
2612 if (offset >= banksize) {
2613 offset = 0;
2614 ++bank; /* next bank */
2615 vidd_set_win_org(adp, bank*banksize);
2616 }
2617 outw(GDCIDX, 0xff08); /* bit mask */
2618 }
2619 while (bx > 0) {
2620 l = imin(bx, banksize);
2621 bzero_io(adp->va_window + offset, l);
2622 offset += l;
2623 bx -= l;
2624 if (offset >= banksize) {
2625 offset = 0;
2626 ++bank; /* next bank */
2627 vidd_set_win_org(adp, bank*banksize);
2628 }
2629 }
2630 if ((x + cx) % 8) {
2631 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
2632 writeb(adp->va_window + offset, 0);
2633 ++offset;
2634 if (offset >= banksize) {
2635 offset = 0;
2636 ++bank; /* next bank */
2637 vidd_set_win_org(adp, bank*banksize);
2638 }
2639 outw(GDCIDX, 0xff08); /* bit mask */
2640 }
2641 ++y;
2642 --cy;
2643 }
2644
2645 outw(GDCIDX, 0xff08); /* bit mask */
2646 outw(GDCIDX, 0x0000); /* set/reset */
2647 outw(GDCIDX, 0x0001); /* set/reset enable */
2648 }
2649
2650 static void
packed_fill_rect(video_adapter_t * adp,int val,int x,int y,int cx,int cy)2651 packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2652 {
2653 int banksize;
2654 int bank;
2655 int pos;
2656 int offset; /* offset within window */
2657 int end;
2658
2659 banksize = adp->va_window_size;
2660 bank = -1;
2661 cx *= adp->va_info.vi_pixel_size;
2662 while (cy > 0) {
2663 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
2664 if (bank != pos/banksize) {
2665 vidd_set_win_org(adp, pos);
2666 bank = pos/banksize;
2667 }
2668 offset = pos%banksize;
2669 end = imin(offset + cx, banksize);
2670 fill_io(val, adp->va_window + offset,
2671 (end - offset)/adp->va_info.vi_pixel_size);
2672 /* the line may cross the window boundary */
2673 if (offset + cx > banksize) {
2674 ++bank; /* next bank */
2675 vidd_set_win_org(adp, bank*banksize);
2676 end = offset + cx - banksize;
2677 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
2678 }
2679 ++y;
2680 --cy;
2681 }
2682 }
2683
2684 static void
direct_fill_rect16(video_adapter_t * adp,int val,int x,int y,int cx,int cy)2685 direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2686 {
2687 int banksize;
2688 int bank;
2689 int pos;
2690 int offset; /* offset within window */
2691 int end;
2692
2693 /*
2694 * XXX: the function assumes that banksize is a muliple of
2695 * sizeof(u_int16_t).
2696 */
2697 banksize = adp->va_window_size;
2698 bank = -1;
2699 cx *= sizeof(u_int16_t);
2700 while (cy > 0) {
2701 pos = adp->va_line_width*y + x*sizeof(u_int16_t);
2702 if (bank != pos/banksize) {
2703 vidd_set_win_org(adp, pos);
2704 bank = pos/banksize;
2705 }
2706 offset = pos%banksize;
2707 end = imin(offset + cx, banksize);
2708 fillw_io(val, adp->va_window + offset,
2709 (end - offset)/sizeof(u_int16_t));
2710 /* the line may cross the window boundary */
2711 if (offset + cx > banksize) {
2712 ++bank; /* next bank */
2713 vidd_set_win_org(adp, bank*banksize);
2714 end = offset + cx - banksize;
2715 fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
2716 }
2717 ++y;
2718 --cy;
2719 }
2720 }
2721
2722 static void
direct_fill_rect24(video_adapter_t * adp,int val,int x,int y,int cx,int cy)2723 direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2724 {
2725 int banksize;
2726 int bank;
2727 int pos;
2728 int offset; /* offset within window */
2729 int end;
2730 int i;
2731 int j;
2732 u_int8_t b[3];
2733
2734 b[0] = val & 0x0000ff;
2735 b[1] = (val >> 8) & 0x0000ff;
2736 b[2] = (val >> 16) & 0x0000ff;
2737 banksize = adp->va_window_size;
2738 bank = -1;
2739 cx *= 3;
2740 while (cy > 0) {
2741 pos = adp->va_line_width*y + x*3;
2742 if (bank != pos/banksize) {
2743 vidd_set_win_org(adp, pos);
2744 bank = pos/banksize;
2745 }
2746 offset = pos%banksize;
2747 end = imin(offset + cx, banksize);
2748 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
2749 writeb(adp->va_window + j, b[i]);
2750 }
2751 /* the line may cross the window boundary */
2752 if (offset + cx >= banksize) {
2753 ++bank; /* next bank */
2754 vidd_set_win_org(adp, bank*banksize);
2755 j = 0;
2756 end = offset + cx - banksize;
2757 for (; j < end; i = (++i)%3, ++j) {
2758 writeb(adp->va_window + j, b[i]);
2759 }
2760 }
2761 ++y;
2762 --cy;
2763 }
2764 }
2765
2766 static void
direct_fill_rect32(video_adapter_t * adp,int val,int x,int y,int cx,int cy)2767 direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2768 {
2769 int banksize;
2770 int bank;
2771 int pos;
2772 int offset; /* offset within window */
2773 int end;
2774
2775 /*
2776 * XXX: the function assumes that banksize is a muliple of
2777 * sizeof(u_int32_t).
2778 */
2779 banksize = adp->va_window_size;
2780 bank = -1;
2781 cx *= sizeof(u_int32_t);
2782 while (cy > 0) {
2783 pos = adp->va_line_width*y + x*sizeof(u_int32_t);
2784 if (bank != pos/banksize) {
2785 vidd_set_win_org(adp, pos);
2786 bank = pos/banksize;
2787 }
2788 offset = pos%banksize;
2789 end = imin(offset + cx, banksize);
2790 filll_io(val, adp->va_window + offset,
2791 (end - offset)/sizeof(u_int32_t));
2792 /* the line may cross the window boundary */
2793 if (offset + cx > banksize) {
2794 ++bank; /* next bank */
2795 vidd_set_win_org(adp, bank*banksize);
2796 end = offset + cx - banksize;
2797 filll_io(val, adp->va_window, end/sizeof(u_int32_t));
2798 }
2799 ++y;
2800 --cy;
2801 }
2802 }
2803
2804 static int
vga_fill_rect(video_adapter_t * adp,int val,int x,int y,int cx,int cy)2805 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2806 {
2807 switch (adp->va_info.vi_mem_model) {
2808 case V_INFO_MM_TEXT:
2809 /* do nothing? XXX */
2810 break;
2811 case V_INFO_MM_PLANAR:
2812 planar_fill_rect(adp, val, x, y, cx, cy);
2813 break;
2814 case V_INFO_MM_PACKED:
2815 packed_fill_rect(adp, val, x, y, cx, cy);
2816 break;
2817 case V_INFO_MM_DIRECT:
2818 switch (adp->va_info.vi_pixel_size) {
2819 case sizeof(u_int16_t):
2820 direct_fill_rect16(adp, val, x, y, cx, cy);
2821 break;
2822 case 3:
2823 direct_fill_rect24(adp, val, x, y, cx, cy);
2824 break;
2825 case sizeof(u_int32_t):
2826 direct_fill_rect32(adp, val, x, y, cx, cy);
2827 break;
2828 }
2829 break;
2830 }
2831 return 0;
2832 }
2833 #else /* !notyet */
2834 static int
vga_fill_rect(video_adapter_t * adp,int val,int x,int y,int cx,int cy)2835 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2836 {
2837 return ENODEV;
2838 }
2839 #endif /* notyet */
2840
2841 static int
vga_bitblt(video_adapter_t * adp,...)2842 vga_bitblt(video_adapter_t *adp,...)
2843 {
2844 /* FIXME */
2845 return ENODEV;
2846 }
2847
2848 #endif /* !VGA_NO_MODE_CHANGE */
2849
2850 static int
get_palette(video_adapter_t * adp,int base,int count,u_char * red,u_char * green,u_char * blue,u_char * trans)2851 get_palette(video_adapter_t *adp, int base, int count,
2852 u_char *red, u_char *green, u_char *blue, u_char *trans)
2853 {
2854 u_char *r;
2855 u_char *g;
2856 u_char *b;
2857 int error;
2858
2859 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2860 base + count > 256)
2861 return EINVAL;
2862
2863 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2864 g = r + count;
2865 b = g + count;
2866 if (vga_save_palette2(adp, base, count, r, g, b)) {
2867 error = ENODEV;
2868 goto out;
2869 }
2870 error = copyout(r, red, count);
2871 if (error != 0)
2872 goto out;
2873 error = copyout(g, green, count);
2874 if (error != 0)
2875 goto out;
2876 error = copyout(b, blue, count);
2877 if (error != 0)
2878 goto out;
2879 if (trans != NULL) {
2880 bzero(r, count);
2881 error = copyout(r, trans, count);
2882 }
2883 out:
2884 free(r, M_DEVBUF);
2885
2886 return error;
2887 }
2888
2889 static int
set_palette(video_adapter_t * adp,int base,int count,u_char * red,u_char * green,u_char * blue,u_char * trans)2890 set_palette(video_adapter_t *adp, int base, int count,
2891 u_char *red, u_char *green, u_char *blue, u_char *trans)
2892 {
2893 u_char *r;
2894 u_char *g;
2895 u_char *b;
2896 int err;
2897
2898 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2899 base + count > 256)
2900 return EINVAL;
2901
2902 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2903 g = r + count;
2904 b = g + count;
2905 err = copyin(red, r, count);
2906 if (!err)
2907 err = copyin(green, g, count);
2908 if (!err)
2909 err = copyin(blue, b, count);
2910 if (!err)
2911 err = vga_load_palette2(adp, base, count, r, g, b);
2912 free(r, M_DEVBUF);
2913
2914 return (err ? ENODEV : 0);
2915 }
2916
2917 static int
vga_dev_ioctl(video_adapter_t * adp,u_long cmd,caddr_t arg)2918 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
2919 {
2920 switch (cmd) {
2921 case FBIO_GETWINORG: /* get frame buffer window origin */
2922 *(u_int *)arg = 0;
2923 return 0;
2924
2925 case FBIO_SETWINORG: /* set frame buffer window origin */
2926 return ENODEV;
2927
2928 case FBIO_SETDISPSTART: /* set display start address */
2929 return (set_display_start(adp,
2930 ((video_display_start_t *)arg)->x,
2931 ((video_display_start_t *)arg)->y)
2932 ? ENODEV : 0);
2933
2934 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
2935 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
2936
2937 case FBIO_GETPALETTE: /* get color palette */
2938 return get_palette(adp, ((video_color_palette_t *)arg)->index,
2939 ((video_color_palette_t *)arg)->count,
2940 ((video_color_palette_t *)arg)->red,
2941 ((video_color_palette_t *)arg)->green,
2942 ((video_color_palette_t *)arg)->blue,
2943 ((video_color_palette_t *)arg)->transparent);
2944
2945 case FBIO_SETPALETTE: /* set color palette */
2946 return set_palette(adp, ((video_color_palette_t *)arg)->index,
2947 ((video_color_palette_t *)arg)->count,
2948 ((video_color_palette_t *)arg)->red,
2949 ((video_color_palette_t *)arg)->green,
2950 ((video_color_palette_t *)arg)->blue,
2951 ((video_color_palette_t *)arg)->transparent);
2952
2953 case FBIOGTYPE: /* get frame buffer type info. */
2954 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
2955 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
2956 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
2957 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
2958 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
2959 ((struct fbtype *)arg)->fb_cmsize = 0;
2960 else
2961 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
2962 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
2963 return 0;
2964
2965 case FBIOGETCMAP: /* get color palette */
2966 return get_palette(adp, ((struct fbcmap *)arg)->index,
2967 ((struct fbcmap *)arg)->count,
2968 ((struct fbcmap *)arg)->red,
2969 ((struct fbcmap *)arg)->green,
2970 ((struct fbcmap *)arg)->blue, NULL);
2971
2972 case FBIOPUTCMAP: /* set color palette */
2973 return set_palette(adp, ((struct fbcmap *)arg)->index,
2974 ((struct fbcmap *)arg)->count,
2975 ((struct fbcmap *)arg)->red,
2976 ((struct fbcmap *)arg)->green,
2977 ((struct fbcmap *)arg)->blue, NULL);
2978
2979 default:
2980 return fb_commonioctl(adp, cmd, arg);
2981 }
2982 }
2983
2984 static void
dump_buffer(u_char * buf,size_t len)2985 dump_buffer(u_char *buf, size_t len)
2986 {
2987 int i;
2988
2989 for(i = 0; i < len;) {
2990 printf("%02x ", buf[i]);
2991 if ((++i % 16) == 0)
2992 printf("\n");
2993 }
2994 }
2995
2996 /*
2997 * diag():
2998 * Print some information about the video adapter and video modes,
2999 * with requested level of details.
3000 *
3001 * all adapters
3002 */
3003 static int
vga_diag(video_adapter_t * adp,int level)3004 vga_diag(video_adapter_t *adp, int level)
3005 {
3006 u_char *mp;
3007 #if FB_DEBUG > 1
3008 video_info_t info;
3009 int i;
3010 #endif
3011
3012 if (!vga_init_done)
3013 return ENXIO;
3014
3015 #if FB_DEBUG > 1
3016 #ifndef VGA_NO_BIOS
3017 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
3018 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
3019 printf("vga: CRTC:0x%x, video option:0x%02x, ",
3020 readw(BIOS_PADDRTOVADDR(0x463)),
3021 readb(BIOS_PADDRTOVADDR(0x487)));
3022 printf("rows:%d, cols:%d, font height:%d\n",
3023 readb(BIOS_PADDRTOVADDR(0x44a)),
3024 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
3025 readb(BIOS_PADDRTOVADDR(0x485)));
3026 #endif /* VGA_NO_BIOS */
3027 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3028 printf("vga: param table EGA/VGA:%p", video_mode_ptr);
3029 printf(", CGA/MDA:%p\n", video_mode_ptr2);
3030 printf("vga: rows_offset:%d\n", rows_offset);
3031 #endif
3032 #endif /* FB_DEBUG > 1 */
3033
3034 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
3035
3036 #if FB_DEBUG > 1
3037 if (adp->va_flags & V_ADP_MODECHANGE) {
3038 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
3039 if (bios_vmode[i].vi_mode == NA)
3040 continue;
3041 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
3042 continue;
3043 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
3044 }
3045 } else {
3046 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
3047 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
3048 }
3049 #endif /* FB_DEBUG > 1 */
3050
3051 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
3052 return 0;
3053 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3054 if (video_mode_ptr == NULL)
3055 printf("vga%d: %s: WARNING: video mode switching is not "
3056 "fully supported on this adapter\n",
3057 adp->va_unit, adp->va_name);
3058 #endif
3059 if (level <= 0)
3060 return 0;
3061
3062 if (adp->va_type == KD_VGA) {
3063 printf("VGA parameters upon power-up\n");
3064 dump_buffer(adpstate.regs, sizeof(adpstate.regs));
3065 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
3066 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
3067 }
3068
3069 mp = get_mode_param(adp->va_initial_mode);
3070 if (mp == NULL) /* this shouldn't be happening */
3071 return 0;
3072 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
3073 dump_buffer(mp, V_MODE_PARAM_SIZE);
3074
3075 return 0;
3076 }
3077