FreeBSD/Linux Kernel Cross Reference
sys/dev/fb/vga.c
1 /*-
2 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
3 * Copyright (c) 1992-1998 Søren Schmidt
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer as
11 * the first lines of this file unmodified.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 *
29 * $FreeBSD: releng/5.0/sys/dev/fb/vga.c 106662 2002-11-08 20:59:23Z jhb $
30 */
31
32 #include "opt_vga.h"
33 #include "opt_fb.h"
34 #include "opt_syscons.h" /* should be removed in the future, XXX */
35
36 #include <sys/param.h>
37 #include <sys/systm.h>
38 #include <sys/kernel.h>
39 #include <sys/conf.h>
40 #include <sys/fcntl.h>
41 #include <sys/malloc.h>
42 #include <sys/fbio.h>
43 #include <sys/stdint.h>
44
45 #include <vm/vm.h>
46 #include <vm/vm_param.h>
47 #include <vm/pmap.h>
48
49 #include <machine/md_var.h>
50 #include <machine/pc/bios.h>
51 #include <machine/bus.h>
52
53 #include <dev/fb/fbreg.h>
54 #include <dev/fb/vgareg.h>
55
56 #include <isa/isareg.h>
57
58 #ifndef VGA_DEBUG
59 #define VGA_DEBUG 0
60 #endif
61
62 int
63 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
64 {
65 video_adapter_t *adp;
66 video_switch_t *sw;
67 int error;
68
69 sw = vid_get_switch(VGA_DRIVER_NAME);
70 if (sw == NULL)
71 return 0;
72 error = (*sw->probe)(unit, &adp, NULL, flags);
73 if (error)
74 return error;
75 bcopy(adp, buf, sizeof(*buf));
76 return 0;
77 }
78
79 int
80 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
81 {
82 video_switch_t *sw;
83 int error;
84
85 sw = vid_get_switch(VGA_DRIVER_NAME);
86 if (sw == NULL)
87 return ENXIO;
88
89 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
90 if (error)
91 return error;
92 return (*sw->init)(unit, sc->adp, flags);
93 }
94
95 /* cdev driver functions */
96
97 #ifdef FB_INSTALL_CDEV
98
99 int
100 vga_open(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
101 {
102 if (sc == NULL)
103 return ENXIO;
104 if (mode & (O_CREAT | O_APPEND | O_TRUNC))
105 return ENODEV;
106
107 return genfbopen(&sc->gensc, sc->adp, flag, mode, td);
108 }
109
110 int
111 vga_close(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
112 {
113 return genfbclose(&sc->gensc, sc->adp, flag, mode, td);
114 }
115
116 int
117 vga_read(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
118 {
119 return genfbread(&sc->gensc, sc->adp, uio, flag);
120 }
121
122 int
123 vga_write(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
124 {
125 return genfbread(&sc->gensc, sc->adp, uio, flag);
126 }
127
128 int
129 vga_ioctl(dev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
130 struct thread *td)
131 {
132 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, td);
133 }
134
135 int
136 vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
137 {
138 return genfbmmap(&sc->gensc, sc->adp, offset, prot);
139 }
140
141 #endif /* FB_INSTALL_CDEV */
142
143 /* LOW-LEVEL */
144
145 #include <machine/clock.h>
146 #include <machine/pc/vesa.h>
147
148 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
149 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
150 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
151
152 /* for compatibility with old kernel options */
153 #ifdef SC_ALT_SEQACCESS
154 #undef SC_ALT_SEQACCESS
155 #undef VGA_ALT_SEQACCESS
156 #define VGA_ALT_SEQACCESS 1
157 #endif
158
159 #ifdef SLOW_VGA
160 #undef SLOW_VGA
161 #undef VGA_SLOW_IOACCESS
162 #define VGA_SLOW_IOACCESS 1
163 #endif
164
165 /* architecture dependent option */
166 #if defined(__alpha__) || defined(__ia64__)
167 #define VGA_NO_BIOS 1
168 #endif
169
170 /* this should really be in `rtc.h' */
171 #define RTC_EQUIPMENT 0x14
172
173 /* various sizes */
174 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
175 #define V_MODE_PARAM_SIZE 64
176
177 /* video adapter state buffer */
178 struct adp_state {
179 int sig;
180 #define V_STATE_SIG 0x736f6962
181 u_char regs[V_MODE_PARAM_SIZE];
182 };
183 typedef struct adp_state adp_state_t;
184
185 /* video adapter information */
186 #define DCC_MONO 0
187 #define DCC_CGA40 1
188 #define DCC_CGA80 2
189 #define DCC_EGAMONO 3
190 #define DCC_EGA40 4
191 #define DCC_EGA80 5
192
193 /*
194 * NOTE: `va_window' should have a virtual address, but is initialized
195 * with a physical address in the following table, as verify_adapter()
196 * will perform address conversion at run-time.
197 */
198 static video_adapter_t adapter_init_value[] = {
199 /* DCC_MONO */
200 { 0, KD_MONO, "mda", 0, 0, 0, IO_MDA, IO_MDASIZE, MONO_CRTC,
201 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
202 0, 0, 0, 0, 7, 0, },
203 /* DCC_CGA40 */
204 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
205 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
206 0, 0, 0, 0, 3, 0, },
207 /* DCC_CGA80 */
208 { 0, KD_CGA, "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
209 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
210 0, 0, 0, 0, 3, 0, },
211 /* DCC_EGAMONO */
212 { 0, KD_EGA, "ega", 0, 0, 0, IO_MDA, 48, MONO_CRTC,
213 EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE,
214 0, 0, 0, 0, 7, 0, },
215 /* DCC_EGA40 */
216 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
217 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
218 0, 0, 0, 0, 3, 0, },
219 /* DCC_EGA80 */
220 { 0, KD_EGA, "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48, COLOR_CRTC,
221 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
222 0, 0, 0, 0, 3, 0, },
223 };
224
225 static video_adapter_t biosadapter[2];
226 static int biosadapters = 0;
227
228 /* video driver declarations */
229 static int vga_configure(int flags);
230 int (*vga_sub_configure)(int flags);
231 #if 0
232 static int vga_nop(void);
233 #endif
234 static int vga_error(void);
235 static vi_probe_t vga_probe;
236 static vi_init_t vga_init;
237 static vi_get_info_t vga_get_info;
238 static vi_query_mode_t vga_query_mode;
239 static vi_set_mode_t vga_set_mode;
240 static vi_save_font_t vga_save_font;
241 static vi_load_font_t vga_load_font;
242 static vi_show_font_t vga_show_font;
243 static vi_save_palette_t vga_save_palette;
244 static vi_load_palette_t vga_load_palette;
245 static vi_set_border_t vga_set_border;
246 static vi_save_state_t vga_save_state;
247 static vi_load_state_t vga_load_state;
248 static vi_set_win_org_t vga_set_origin;
249 static vi_read_hw_cursor_t vga_read_hw_cursor;
250 static vi_set_hw_cursor_t vga_set_hw_cursor;
251 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
252 static vi_blank_display_t vga_blank_display;
253 static vi_mmap_t vga_mmap_buf;
254 static vi_ioctl_t vga_dev_ioctl;
255 #ifndef VGA_NO_MODE_CHANGE
256 static vi_clear_t vga_clear;
257 static vi_fill_rect_t vga_fill_rect;
258 static vi_bitblt_t vga_bitblt;
259 #else /* VGA_NO_MODE_CHANGE */
260 #define vga_clear (vi_clear_t *)vga_error
261 #define vga_fill_rect (vi_fill_rect_t *)vga_error
262 #define vga_bitblt (vi_bitblt_t *)vga_error
263 #endif
264 static vi_diag_t vga_diag;
265
266 static video_switch_t vgavidsw = {
267 vga_probe,
268 vga_init,
269 vga_get_info,
270 vga_query_mode,
271 vga_set_mode,
272 vga_save_font,
273 vga_load_font,
274 vga_show_font,
275 vga_save_palette,
276 vga_load_palette,
277 vga_set_border,
278 vga_save_state,
279 vga_load_state,
280 vga_set_origin,
281 vga_read_hw_cursor,
282 vga_set_hw_cursor,
283 vga_set_hw_cursor_shape,
284 vga_blank_display,
285 vga_mmap_buf,
286 vga_dev_ioctl,
287 vga_clear,
288 vga_fill_rect,
289 vga_bitblt,
290 vga_error,
291 vga_error,
292 vga_diag,
293 };
294
295 VIDEO_DRIVER(mda, vgavidsw, NULL);
296 VIDEO_DRIVER(cga, vgavidsw, NULL);
297 VIDEO_DRIVER(ega, vgavidsw, NULL);
298 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
299
300 /* VGA BIOS standard video modes */
301 #define EOT (-1)
302 #define NA (-2)
303
304 static video_info_t bios_vmode[] = {
305 /* CGA */
306 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
307 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
308 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
309 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
310 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
311 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
312 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
313 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
314 /* EGA */
315 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
316 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
317 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
318 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
319 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
320 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
321 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
322 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
323 /* VGA */
324 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
325 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
326 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
327 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
328 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
329 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
330 /* MDA */
331 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
332 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
333 /* EGA */
334 { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1,
335 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
336 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
337 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
338 /* VGA */
339 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
340 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
341 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
342 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
343 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
344 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
345 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
346 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
347 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
348 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
349 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
350 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
351
352 #ifndef VGA_NO_MODE_CHANGE
353
354 #ifdef VGA_WIDTH90
355 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1,
356 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
357 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
358 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
359 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1,
360 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
361 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
362 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
363 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1,
364 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
365 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1,
366 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
367 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1,
368 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
369 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1,
370 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
371 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1,
372 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
373 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1,
374 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
375 #endif /* VGA_WIDTH90 */
376
377 /* CGA */
378 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
379 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
380 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
381 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
382 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
383 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
384 /* EGA */
385 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
386 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
387 V_INFO_MM_PLANAR },
388 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
389 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
390 V_INFO_MM_PLANAR },
391 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
392 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
393 V_INFO_MM_PLANAR },
394 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
395 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
396 V_INFO_MM_PLANAR },
397 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
398 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
399 V_INFO_MM_PLANAR },
400 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
401 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
402 V_INFO_MM_PLANAR },
403 /* VGA */
404 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
405 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
406 V_INFO_MM_PLANAR },
407 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
408 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
409 V_INFO_MM_PLANAR },
410 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
411 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
412 V_INFO_MM_PACKED, 1 },
413 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4,
414 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
415 V_INFO_MM_VGAX, 1 },
416 #endif /* VGA_NO_MODE_CHANGE */
417
418 { EOT },
419 };
420
421 static int vga_init_done = FALSE;
422 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
423 static u_char *video_mode_ptr = NULL; /* EGA/VGA */
424 static u_char *video_mode_ptr2 = NULL; /* CGA/MDA */
425 #endif
426 static u_char *mode_map[V_MODE_MAP_SIZE];
427 static adp_state_t adpstate;
428 static adp_state_t adpstate2;
429 static int rows_offset = 1;
430
431 /* local macros and functions */
432 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
433
434 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
435 static void map_mode_table(u_char *map[], u_char *table, int max);
436 #endif
437 static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max,
438 int color);
439 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
440 static int map_mode_num(int mode);
441 #endif
442 static int map_gen_mode_num(int type, int color, int mode);
443 static int map_bios_mode_num(int type, int color, int bios_mode);
444 static u_char *get_mode_param(int mode);
445 #ifndef VGA_NO_BIOS
446 static void fill_adapter_param(int code, video_adapter_t *adp);
447 #endif
448 static int verify_adapter(video_adapter_t *adp);
449 static void update_adapter_info(video_adapter_t *adp, video_info_t *info);
450 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
451 #define COMP_IDENTICAL 0
452 #define COMP_SIMILAR 1
453 #define COMP_DIFFERENT 2
454 static int comp_adpregs(u_char *buf1, u_char *buf2);
455 #endif
456 static int probe_adapters(void);
457 static int set_line_length(video_adapter_t *adp, int pixel);
458 static int set_display_start(video_adapter_t *adp, int x, int y);
459 static void filll_io(int val, vm_offset_t d, size_t size);
460
461 #ifndef VGA_NO_MODE_CHANGE
462 #ifdef VGA_WIDTH90
463 static void set_width90(adp_state_t *params);
464 #endif
465 #endif /* !VGA_NO_MODE_CHANGE */
466
467 #ifndef VGA_NO_FONT_LOADING
468 #define PARAM_BUFSIZE 6
469 static void set_font_mode(video_adapter_t *adp, u_char *buf);
470 static void set_normal_mode(video_adapter_t *adp, u_char *buf);
471 #endif
472
473 #ifndef VGA_NO_MODE_CHANGE
474 static void planar_fill(video_adapter_t *adp, int val);
475 static void packed_fill(video_adapter_t *adp, int val);
476 static void direct_fill(video_adapter_t *adp, int val);
477 #ifdef notyet
478 static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y,
479 int cx, int cy);
480 static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y,
481 int cx, int cy);
482 static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y,
483 int cx, int cy);
484 static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y,
485 int cx, int cy);
486 static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y,
487 int cx, int cy);
488 #endif /* notyet */
489 #endif /* !VGA_NO_MODE_CHANGE */
490
491 static void dump_buffer(u_char *buf, size_t len);
492
493 #define ISMAPPED(pa, width) \
494 (((pa) <= (u_long)0x1000 - (width)) \
495 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
496
497 #define prologue(adp, flag, err) \
498 if (!vga_init_done || !((adp)->va_flags & (flag))) \
499 return (err)
500
501 /* a backdoor for the console driver */
502 static int
503 vga_configure(int flags)
504 {
505 int i;
506
507 probe_adapters();
508 for (i = 0; i < biosadapters; ++i) {
509 if (!probe_done(&biosadapter[i]))
510 continue;
511 biosadapter[i].va_flags |= V_ADP_INITIALIZED;
512 if (!config_done(&biosadapter[i])) {
513 if (vid_register(&biosadapter[i]) < 0)
514 continue;
515 biosadapter[i].va_flags |= V_ADP_REGISTERED;
516 }
517 }
518 if (vga_sub_configure != NULL)
519 (*vga_sub_configure)(flags);
520
521 return biosadapters;
522 }
523
524 /* local subroutines */
525
526 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
527 /* construct the mode parameter map */
528 static void
529 map_mode_table(u_char *map[], u_char *table, int max)
530 {
531 int i;
532
533 for(i = 0; i < max; ++i)
534 map[i] = table + i*V_MODE_PARAM_SIZE;
535 for(; i < V_MODE_MAP_SIZE; ++i)
536 map[i] = NULL;
537 }
538 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
539
540 static void
541 clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
542 {
543 video_info_t info;
544 int i;
545
546 /*
547 * NOTE: we don't touch `bios_vmode[]' because it is shared
548 * by all adapters.
549 */
550 for(i = 0; i < max; ++i) {
551 if (vga_get_info(adp, i, &info))
552 continue;
553 if ((info.vi_flags & V_INFO_COLOR) != color)
554 map[i] = NULL;
555 }
556 }
557
558 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
559 /* map the non-standard video mode to a known mode number */
560 static int
561 map_mode_num(int mode)
562 {
563 static struct {
564 int from;
565 int to;
566 } mode_map[] = {
567 { M_ENH_B80x43, M_ENH_B80x25 },
568 { M_ENH_C80x43, M_ENH_C80x25 },
569 { M_VGA_M80x30, M_VGA_M80x25 },
570 { M_VGA_C80x30, M_VGA_C80x25 },
571 { M_VGA_M80x50, M_VGA_M80x25 },
572 { M_VGA_C80x50, M_VGA_C80x25 },
573 { M_VGA_M80x60, M_VGA_M80x25 },
574 { M_VGA_C80x60, M_VGA_C80x25 },
575 #ifdef VGA_WIDTH90
576 { M_VGA_M90x25, M_VGA_M80x25 },
577 { M_VGA_C90x25, M_VGA_C80x25 },
578 { M_VGA_M90x30, M_VGA_M80x25 },
579 { M_VGA_C90x30, M_VGA_C80x25 },
580 { M_VGA_M90x43, M_ENH_B80x25 },
581 { M_VGA_C90x43, M_ENH_C80x25 },
582 { M_VGA_M90x50, M_VGA_M80x25 },
583 { M_VGA_C90x50, M_VGA_C80x25 },
584 { M_VGA_M90x60, M_VGA_M80x25 },
585 { M_VGA_C90x60, M_VGA_C80x25 },
586 #endif
587 { M_VGA_MODEX, M_VGA_CG320 },
588 };
589 int i;
590
591 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
592 if (mode_map[i].from == mode)
593 return mode_map[i].to;
594 }
595 return mode;
596 }
597 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
598
599 /* map a generic video mode to a known mode number */
600 static int
601 map_gen_mode_num(int type, int color, int mode)
602 {
603 static struct {
604 int from;
605 int to_color;
606 int to_mono;
607 } mode_map[] = {
608 { M_TEXT_80x30, M_VGA_C80x30, M_VGA_M80x30, },
609 { M_TEXT_80x43, M_ENH_C80x43, M_ENH_B80x43, },
610 { M_TEXT_80x50, M_VGA_C80x50, M_VGA_M80x50, },
611 { M_TEXT_80x60, M_VGA_C80x60, M_VGA_M80x60, },
612 };
613 int i;
614
615 if (mode == M_TEXT_80x25) {
616 switch (type) {
617
618 case KD_VGA:
619 if (color)
620 return M_VGA_C80x25;
621 else
622 return M_VGA_M80x25;
623 break;
624
625 case KD_EGA:
626 if (color)
627 return M_ENH_C80x25;
628 else
629 return M_EGAMONO80x25;
630 break;
631
632 case KD_CGA:
633 return M_C80x25;
634
635 case KD_MONO:
636 case KD_HERCULES:
637 return M_EGAMONO80x25; /* XXX: this name is confusing */
638
639 default:
640 return -1;
641 }
642 }
643
644 for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
645 if (mode_map[i].from == mode)
646 return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
647 }
648 return mode;
649 }
650
651 /* turn the BIOS video number into our video mode number */
652 static int
653 map_bios_mode_num(int type, int color, int bios_mode)
654 {
655 static int cga_modes[7] = {
656 M_B40x25, M_C40x25, /* 0, 1 */
657 M_B80x25, M_C80x25, /* 2, 3 */
658 M_BG320, M_CG320,
659 M_BG640,
660 };
661 static int ega_modes[17] = {
662 M_ENH_B40x25, M_ENH_C40x25, /* 0, 1 */
663 M_ENH_B80x25, M_ENH_C80x25, /* 2, 3 */
664 M_BG320, M_CG320,
665 M_BG640,
666 M_EGAMONO80x25, /* 7 */
667 8, 9, 10, 11, 12,
668 M_CG320_D,
669 M_CG640_E,
670 M_ENHMONOAPA2, /* XXX: video momery > 64K */
671 M_ENH_CG640, /* XXX: video momery > 64K */
672 };
673 static int vga_modes[20] = {
674 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
675 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
676 M_BG320, M_CG320,
677 M_BG640,
678 M_VGA_M80x25, /* 7 */
679 8, 9, 10, 11, 12,
680 M_CG320_D,
681 M_CG640_E,
682 M_ENHMONOAPA2,
683 M_ENH_CG640,
684 M_BG640x480, M_CG640x480,
685 M_VGA_CG320,
686 };
687
688 switch (type) {
689
690 case KD_VGA:
691 if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
692 return vga_modes[bios_mode];
693 else if (color)
694 return M_VGA_C80x25;
695 else
696 return M_VGA_M80x25;
697 break;
698
699 case KD_EGA:
700 if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
701 return ega_modes[bios_mode];
702 else if (color)
703 return M_ENH_C80x25;
704 else
705 return M_EGAMONO80x25;
706 break;
707
708 case KD_CGA:
709 if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
710 return cga_modes[bios_mode];
711 else
712 return M_C80x25;
713 break;
714
715 case KD_MONO:
716 case KD_HERCULES:
717 return M_EGAMONO80x25; /* XXX: this name is confusing */
718
719 default:
720 break;
721 }
722 return -1;
723 }
724
725 /* look up a parameter table entry */
726 static u_char
727 *get_mode_param(int mode)
728 {
729 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
730 if (mode >= V_MODE_MAP_SIZE)
731 mode = map_mode_num(mode);
732 #endif
733 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
734 return mode_map[mode];
735 else
736 return NULL;
737 }
738
739 #ifndef VGA_NO_BIOS
740 static void
741 fill_adapter_param(int code, video_adapter_t *adp)
742 {
743 static struct {
744 int primary;
745 int secondary;
746 } dcc[] = {
747 { DCC_MONO, DCC_EGA40 /* CGA monitor */ },
748 { DCC_MONO, DCC_EGA80 /* CGA monitor */ },
749 { DCC_MONO, DCC_EGA80 },
750 { DCC_MONO, DCC_EGA80 },
751 { DCC_CGA40, DCC_EGAMONO },
752 { DCC_CGA80, DCC_EGAMONO },
753 { DCC_EGA40 /* CGA monitor */, DCC_MONO},
754 { DCC_EGA80 /* CGA monitor */, DCC_MONO},
755 { DCC_EGA80, DCC_MONO },
756 { DCC_EGA80, DCC_MONO },
757 { DCC_EGAMONO, DCC_CGA40 },
758 { DCC_EGAMONO, DCC_CGA80 },
759 };
760
761 if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
762 adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
763 adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
764 } else {
765 adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
766 adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
767 }
768 }
769 #endif /* VGA_NO_BIOS */
770
771 static int
772 verify_adapter(video_adapter_t *adp)
773 {
774 vm_offset_t buf;
775 u_int16_t v;
776 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
777 u_int32_t p;
778 #endif
779
780 buf = BIOS_PADDRTOVADDR(adp->va_window);
781 v = readw(buf);
782 writew(buf, 0xA55A);
783 if (readw(buf) != 0xA55A)
784 return ENXIO;
785 writew(buf, v);
786
787 switch (adp->va_type) {
788
789 case KD_EGA:
790 outb(adp->va_crtc_addr, 7);
791 if (inb(adp->va_crtc_addr) == 7) {
792 adp->va_type = KD_VGA;
793 adp->va_name = "vga";
794 adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
795 }
796 adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
797 /* the color adapter may be in the 40x25 mode... XXX */
798
799 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
800 /* get the BIOS video mode pointer */
801 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
802 p = BIOS_SADDRTOLADDR(p);
803 if (ISMAPPED(p, sizeof(u_int32_t))) {
804 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
805 p = BIOS_SADDRTOLADDR(p);
806 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
807 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
808 }
809 #endif
810 break;
811
812 case KD_CGA:
813 adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
814 /* may be in the 40x25 mode... XXX */
815 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
816 /* get the BIOS video mode pointer */
817 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
818 p = BIOS_SADDRTOLADDR(p);
819 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
820 #endif
821 break;
822
823 case KD_MONO:
824 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
825 /* get the BIOS video mode pointer */
826 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
827 p = BIOS_SADDRTOLADDR(p);
828 video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
829 #endif
830 break;
831 }
832
833 return 0;
834 }
835
836 static void
837 update_adapter_info(video_adapter_t *adp, video_info_t *info)
838 {
839 adp->va_flags &= ~V_ADP_COLOR;
840 adp->va_flags |=
841 (info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
842 adp->va_crtc_addr =
843 (adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
844 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
845 adp->va_window_size = info->vi_window_size;
846 adp->va_window_gran = info->vi_window_gran;
847 adp->va_window_orig = 0;
848 /* XXX */
849 adp->va_buffer = info->vi_buffer;
850 adp->va_buffer_size = info->vi_buffer_size;
851 if (info->vi_mem_model == V_INFO_MM_VGAX) {
852 adp->va_line_width = info->vi_width/2;
853 } else if (info->vi_flags & V_INFO_GRAPHICS) {
854 switch (info->vi_depth/info->vi_planes) {
855 case 1:
856 adp->va_line_width = info->vi_width/8;
857 break;
858 case 2:
859 adp->va_line_width = info->vi_width/4;
860 break;
861 case 4:
862 adp->va_line_width = info->vi_width/2;
863 break;
864 case 8:
865 default: /* shouldn't happen */
866 adp->va_line_width = info->vi_width;
867 break;
868 }
869 } else {
870 adp->va_line_width = info->vi_width;
871 }
872 adp->va_disp_start.x = 0;
873 adp->va_disp_start.y = 0;
874 bcopy(info, &adp->va_info, sizeof(adp->va_info));
875 }
876
877 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
878 /* compare two parameter table entries */
879 static int
880 comp_adpregs(u_char *buf1, u_char *buf2)
881 {
882 static struct {
883 u_char mask;
884 } params[V_MODE_PARAM_SIZE] = {
885 {0xff}, {0x00}, {0xff}, /* COLS}, ROWS}, POINTS */
886 {0x00}, {0x00}, /* page length */
887 {0xfe}, {0xff}, {0xff}, {0xff}, /* sequencer registers */
888 {0xf3}, /* misc register */
889 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff}, /* CRTC */
890 {0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
891 {0x00}, {0x00}, {0x00}, {0x00}, {0x00},
892 {0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
893 {0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
894 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* attribute controller regs */
895 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
896 {0xff}, {0xff}, {0xff}, {0xff}, {0xff},
897 {0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
898 {0xff}, {0xff}, {0xff}, {0xff}, {0xff}, /* GDC register */
899 {0xff}, {0xff}, {0xff}, {0xff},
900 };
901 int identical = TRUE;
902 int i;
903
904 if ((buf1 == NULL) || (buf2 == NULL))
905 return COMP_DIFFERENT;
906
907 for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
908 if (params[i].mask == 0) /* don't care */
909 continue;
910 if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
911 return COMP_DIFFERENT;
912 if (buf1[i] != buf2[i])
913 identical = FALSE;
914 }
915 return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
916 }
917 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
918
919 /* probe video adapters and return the number of detected adapters */
920 static int
921 probe_adapters(void)
922 {
923 video_adapter_t *adp;
924 video_info_t info;
925 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
926 u_char *mp;
927 #endif
928 int i;
929
930 /* do this test only once */
931 if (vga_init_done)
932 return biosadapters;
933 vga_init_done = TRUE;
934
935 /*
936 * Locate display adapters.
937 * The AT architecture supports upto two adapters. `syscons' allows
938 * the following combinations of adapters:
939 * 1) MDA + CGA
940 * 2) MDA + EGA/VGA color
941 * 3) CGA + EGA/VGA mono
942 * Note that `syscons' doesn't bother with MCGA as it is only
943 * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
944 * thus, they are not running FreeBSD!
945 * When there are two adapaters in the system, one becomes `primary'
946 * and the other `secondary'. The EGA adapter has a set of DIP
947 * switches on board for this information and the EGA BIOS copies
948 * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88).
949 * The VGA BIOS has more sophisticated mechanism and has this
950 * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains
951 * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
952 */
953
954 /*
955 * Check rtc and BIOS data area.
956 * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
957 * copy of RTC_EQUIPMENT. Bits 4 and 5 of ETC_EQUIPMENT are
958 * zeros for EGA and VGA. However, the EGA/VGA BIOS sets
959 * these bits in BIOSDATA_EQUIPMENT according to the monitor
960 * type detected.
961 */
962 #ifndef VGA_NO_BIOS
963 if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
964 /* EGA/VGA BIOS is present */
965 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
966 biosadapter);
967 } else {
968 switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) { /* bit 4 and 5 */
969 case 0:
970 /* EGA/VGA: shouldn't be happening */
971 fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f,
972 biosadapter);
973 break;
974 case 1:
975 /* CGA 40x25 */
976 /* FIXME: switch to the 80x25 mode? XXX */
977 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
978 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
979 break;
980 case 2:
981 /* CGA 80x25 */
982 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
983 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
984 break;
985 case 3:
986 /* MDA */
987 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
988 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
989 break;
990 }
991 }
992 #else
993 /* assume EGA/VGA? XXX */
994 biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
995 biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
996 #endif /* VGA_NO_BIOS */
997
998 biosadapters = 0;
999 if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
1000 ++biosadapters;
1001 biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
1002 biosadapter[V_ADP_SECONDARY].va_mode =
1003 biosadapter[V_ADP_SECONDARY].va_initial_mode =
1004 map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type,
1005 biosadapter[V_ADP_SECONDARY].va_flags
1006 & V_ADP_COLOR,
1007 biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
1008 } else {
1009 biosadapter[V_ADP_SECONDARY].va_type = -1;
1010 }
1011 if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
1012 ++biosadapters;
1013 biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
1014 #ifndef VGA_NO_BIOS
1015 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode =
1016 readb(BIOS_PADDRTOVADDR(0x449));
1017 #else
1018 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3; /* XXX */
1019 #endif
1020 biosadapter[V_ADP_PRIMARY].va_mode =
1021 biosadapter[V_ADP_PRIMARY].va_initial_mode =
1022 map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type,
1023 biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
1024 biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
1025 } else {
1026 biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
1027 biosadapter[V_ADP_SECONDARY].va_type = -1;
1028 }
1029 if (biosadapters == 0)
1030 return biosadapters;
1031 biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
1032 biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
1033
1034 #if 0 /* we don't need these... */
1035 fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
1036 fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
1037 #endif
1038
1039 #if notyet
1040 /*
1041 * We cannot have two video adapter of the same type; there must be
1042 * only one of color or mono adapter, or one each of them.
1043 */
1044 if (biosadapters > 1) {
1045 if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
1046 & V_ADP_COLOR))
1047 /* we have two mono or color adapters!! */
1048 return (biosadapters = 0);
1049 }
1050 #endif
1051
1052 /*
1053 * Ensure a zero start address. The registers are w/o
1054 * for old hardware so it's too hard to relocate the active screen
1055 * memory.
1056 * This must be done before vga_save_state() for VGA.
1057 */
1058 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
1059 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1060 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
1061 outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
1062
1063 /* the video mode parameter table in EGA/VGA BIOS */
1064 /* NOTE: there can be only one EGA/VGA, wheather color or mono,
1065 * recognized by the video BIOS.
1066 */
1067 if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
1068 (biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
1069 adp = &biosadapter[V_ADP_PRIMARY];
1070 } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
1071 (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
1072 adp = &biosadapter[V_ADP_SECONDARY];
1073 } else {
1074 adp = NULL;
1075 }
1076 bzero(mode_map, sizeof(mode_map));
1077 if (adp != NULL) {
1078 if (adp->va_type == KD_VGA) {
1079 vga_save_state(adp, &adpstate, sizeof(adpstate));
1080 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1081 mode_map[adp->va_initial_mode] = adpstate.regs;
1082 rows_offset = 1;
1083 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1084 if (video_mode_ptr == NULL) {
1085 mode_map[adp->va_initial_mode] = adpstate.regs;
1086 rows_offset = 1;
1087 } else {
1088 /* discard the table if we are not familiar with it... */
1089 map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
1090 mp = get_mode_param(adp->va_initial_mode);
1091 if (mp != NULL)
1092 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
1093 switch (comp_adpregs(adpstate.regs, mp)) {
1094 case COMP_IDENTICAL:
1095 /*
1096 * OK, this parameter table looks reasonably familiar
1097 * to us...
1098 */
1099 /*
1100 * This is a kludge for Toshiba DynaBook SS433
1101 * whose BIOS video mode table entry has the actual #
1102 * of rows at the offset 1; BIOSes from other
1103 * manufacturers store the # of rows - 1 there. XXX
1104 */
1105 rows_offset = adpstate.regs[1] + 1 - mp[1];
1106 break;
1107
1108 case COMP_SIMILAR:
1109 /*
1110 * Not exactly the same, but similar enough to be
1111 * trusted. However, use the saved register values
1112 * for the initial mode and other modes which are
1113 * based on the initial mode.
1114 */
1115 mode_map[adp->va_initial_mode] = adpstate.regs;
1116 rows_offset = adpstate.regs[1] + 1 - mp[1];
1117 adpstate.regs[1] -= rows_offset - 1;
1118 break;
1119
1120 case COMP_DIFFERENT:
1121 default:
1122 /*
1123 * Don't use the paramter table in BIOS. It doesn't
1124 * look familiar to us. Video mode switching is allowed
1125 * only if the new mode is the same as or based on
1126 * the initial mode.
1127 */
1128 video_mode_ptr = NULL;
1129 bzero(mode_map, sizeof(mode_map));
1130 mode_map[adp->va_initial_mode] = adpstate.regs;
1131 rows_offset = 1;
1132 break;
1133 }
1134 }
1135 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1136
1137 #ifndef VGA_NO_MODE_CHANGE
1138 adp->va_flags |= V_ADP_MODECHANGE;
1139 #endif
1140 #ifndef VGA_NO_FONT_LOADING
1141 adp->va_flags |= V_ADP_FONT;
1142 #endif
1143 } else if (adp->va_type == KD_EGA) {
1144 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
1145 rows_offset = 1;
1146 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1147 if (video_mode_ptr == NULL) {
1148 rows_offset = 1;
1149 } else {
1150 map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
1151 /* XXX how can one validate the EGA table... */
1152 mp = get_mode_param(adp->va_initial_mode);
1153 if (mp != NULL) {
1154 adp->va_flags |= V_ADP_MODECHANGE;
1155 #ifndef VGA_NO_FONT_LOADING
1156 adp->va_flags |= V_ADP_FONT;
1157 #endif
1158 rows_offset = 1;
1159 } else {
1160 /*
1161 * This is serious. We will not be able to switch video
1162 * modes at all...
1163 */
1164 video_mode_ptr = NULL;
1165 bzero(mode_map, sizeof(mode_map));
1166 rows_offset = 1;
1167 }
1168 }
1169 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
1170 }
1171 }
1172
1173 /* remove conflicting modes if we have more than one adapter */
1174 if (biosadapters > 0) {
1175 for (i = 0; i < biosadapters; ++i) {
1176 if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
1177 continue;
1178 clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
1179 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1180 V_INFO_COLOR : 0);
1181 if ((biosadapter[i].va_type == KD_VGA)
1182 || (biosadapter[i].va_type == KD_EGA)) {
1183 biosadapter[i].va_io_base =
1184 (biosadapter[i].va_flags & V_ADP_COLOR) ?
1185 IO_VGA : IO_MDA;
1186 biosadapter[i].va_io_size = 32;
1187 }
1188 }
1189 }
1190
1191 /* buffer address */
1192 vga_get_info(&biosadapter[V_ADP_PRIMARY],
1193 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
1194 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1195 update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
1196
1197 if (biosadapters > 1) {
1198 vga_get_info(&biosadapter[V_ADP_SECONDARY],
1199 biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
1200 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1201 update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
1202 }
1203
1204 /*
1205 * XXX: we should verify the following values for the primary adapter...
1206 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
1207 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
1208 * ? 0 : V_ADP_COLOR;
1209 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
1210 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
1211 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
1212 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
1213 */
1214
1215 return biosadapters;
1216 }
1217
1218 /* set the scan line length in pixel */
1219 static int
1220 set_line_length(video_adapter_t *adp, int pixel)
1221 {
1222 u_char *mp;
1223 int ppw; /* pixels per word */
1224 int bpl; /* bytes per line */
1225 int count;
1226
1227 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1228 return ENODEV;
1229 mp = get_mode_param(adp->va_mode);
1230 if (mp == NULL)
1231 return EINVAL;
1232
1233 switch (adp->va_info.vi_mem_model) {
1234 case V_INFO_MM_PLANAR:
1235 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1236 count = (pixel + ppw - 1)/ppw/2;
1237 bpl = ((pixel + ppw - 1)/ppw/2)*4;
1238 break;
1239 case V_INFO_MM_PACKED:
1240 count = (pixel + 7)/8;
1241 bpl = ((pixel + 7)/8)*8;
1242 break;
1243 case V_INFO_MM_TEXT:
1244 count = (pixel + 7)/8; /* columns */
1245 bpl = (pixel + 7)/8; /* columns */
1246 break;
1247 default:
1248 return ENODEV;
1249 }
1250
1251 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
1252 count *= 2; /* byte mode */
1253 outb(adp->va_crtc_addr, 0x13);
1254 outb(adp->va_crtc_addr + 1, count);
1255 adp->va_line_width = bpl;
1256
1257 return 0;
1258 }
1259
1260 static int
1261 set_display_start(video_adapter_t *adp, int x, int y)
1262 {
1263 int off; /* byte offset (graphics mode)/word offset (text mode) */
1264 int poff; /* pixel offset */
1265 int roff; /* row offset */
1266 int ppb; /* pixels per byte */
1267
1268 if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
1269 x &= ~7;
1270 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
1271 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
1272 off = y*adp->va_line_width + x/ppb;
1273 roff = 0;
1274 poff = x%ppb;
1275 } else {
1276 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1277 outb(TSIDX, 1);
1278 if (inb(TSREG) & 1)
1279 ppb = 9;
1280 else
1281 ppb = 8;
1282 } else {
1283 ppb = 8;
1284 }
1285 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
1286 roff = y%adp->va_info.vi_cheight;
1287 /* FIXME: is this correct? XXX */
1288 if (ppb == 8)
1289 poff = x%ppb;
1290 else
1291 poff = (x + 8)%ppb;
1292 }
1293
1294 /* start address */
1295 outb(adp->va_crtc_addr, 0xc); /* high */
1296 outb(adp->va_crtc_addr + 1, off >> 8);
1297 outb(adp->va_crtc_addr, 0xd); /* low */
1298 outb(adp->va_crtc_addr + 1, off & 0xff);
1299
1300 /* horizontal pel pan */
1301 if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
1302 inb(adp->va_crtc_addr + 6);
1303 outb(ATC, 0x13 | 0x20);
1304 outb(ATC, poff);
1305 inb(adp->va_crtc_addr + 6);
1306 outb(ATC, 0x20);
1307 }
1308
1309 /* preset raw scan */
1310 outb(adp->va_crtc_addr, 8);
1311 outb(adp->va_crtc_addr + 1, roff);
1312
1313 adp->va_disp_start.x = x;
1314 adp->va_disp_start.y = y;
1315 return 0;
1316 }
1317
1318 #ifdef __i386__ /* XXX */
1319 static void
1320 fill(int val, void *d, size_t size)
1321 {
1322 u_char *p = d;
1323
1324 while (size-- > 0)
1325 *p++ = val;
1326 }
1327 #endif /* __i386__ */
1328
1329 static void
1330 filll_io(int val, vm_offset_t d, size_t size)
1331 {
1332 while (size-- > 0) {
1333 writel(d, val);
1334 d += sizeof(u_int32_t);
1335 }
1336 }
1337
1338 /* entry points */
1339
1340 #if 0
1341 static int
1342 vga_nop(void)
1343 {
1344 return 0;
1345 }
1346 #endif
1347
1348 static int
1349 vga_error(void)
1350 {
1351 return ENODEV;
1352 }
1353
1354 static int
1355 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
1356 {
1357 probe_adapters();
1358 if (unit >= biosadapters)
1359 return ENXIO;
1360
1361 *adpp = &biosadapter[unit];
1362
1363 return 0;
1364 }
1365
1366 static int
1367 vga_init(int unit, video_adapter_t *adp, int flags)
1368 {
1369 if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
1370 return ENXIO;
1371
1372 if (!init_done(adp)) {
1373 /* nothing to do really... */
1374 adp->va_flags |= V_ADP_INITIALIZED;
1375 }
1376
1377 if (!config_done(adp)) {
1378 if (vid_register(adp) < 0)
1379 return ENXIO;
1380 adp->va_flags |= V_ADP_REGISTERED;
1381 }
1382 if (vga_sub_configure != NULL)
1383 (*vga_sub_configure)(0);
1384
1385 return 0;
1386 }
1387
1388 /*
1389 * get_info():
1390 * Return the video_info structure of the requested video mode.
1391 *
1392 * all adapters
1393 */
1394 static int
1395 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
1396 {
1397 int i;
1398
1399 if (!vga_init_done)
1400 return ENXIO;
1401
1402 mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
1403 #ifndef VGA_NO_MODE_CHANGE
1404 if (adp->va_flags & V_ADP_MODECHANGE) {
1405 /*
1406 * If the parameter table entry for this mode is not found,
1407 * the mode is not supported...
1408 */
1409 if (get_mode_param(mode) == NULL)
1410 return EINVAL;
1411 } else
1412 #endif /* VGA_NO_MODE_CHANGE */
1413 {
1414 /*
1415 * Even if we don't support video mode switching on this adapter,
1416 * the information on the initial (thus current) video mode
1417 * should be made available.
1418 */
1419 if (mode != adp->va_initial_mode)
1420 return EINVAL;
1421 }
1422
1423 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1424 if (bios_vmode[i].vi_mode == NA)
1425 continue;
1426 if (mode == bios_vmode[i].vi_mode) {
1427 *info = bios_vmode[i];
1428 /* XXX */
1429 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
1430 return 0;
1431 }
1432 }
1433 return EINVAL;
1434 }
1435
1436 /*
1437 * query_mode():
1438 * Find a video mode matching the requested parameters.
1439 * Fields filled with 0 are considered "don't care" fields and
1440 * match any modes.
1441 *
1442 * all adapters
1443 */
1444 static int
1445 vga_query_mode(video_adapter_t *adp, video_info_t *info)
1446 {
1447 int i;
1448
1449 if (!vga_init_done)
1450 return ENXIO;
1451
1452 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1453 if (bios_vmode[i].vi_mode == NA)
1454 continue;
1455
1456 if ((info->vi_width != 0)
1457 && (info->vi_width != bios_vmode[i].vi_width))
1458 continue;
1459 if ((info->vi_height != 0)
1460 && (info->vi_height != bios_vmode[i].vi_height))
1461 continue;
1462 if ((info->vi_cwidth != 0)
1463 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
1464 continue;
1465 if ((info->vi_cheight != 0)
1466 && (info->vi_cheight != bios_vmode[i].vi_cheight))
1467 continue;
1468 if ((info->vi_depth != 0)
1469 && (info->vi_depth != bios_vmode[i].vi_depth))
1470 continue;
1471 if ((info->vi_planes != 0)
1472 && (info->vi_planes != bios_vmode[i].vi_planes))
1473 continue;
1474 /* XXX: should check pixel format, memory model */
1475 if ((info->vi_flags != 0)
1476 && (info->vi_flags != bios_vmode[i].vi_flags))
1477 continue;
1478
1479 /* verify if this mode is supported on this adapter */
1480 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
1481 continue;
1482 return 0;
1483 }
1484 return ENODEV;
1485 }
1486
1487 /*
1488 * set_mode():
1489 * Change the video mode.
1490 *
1491 * EGA/VGA
1492 */
1493
1494 #ifndef VGA_NO_MODE_CHANGE
1495 #ifdef VGA_WIDTH90
1496 static void
1497 set_width90(adp_state_t *params)
1498 {
1499 /*
1500 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
1501 * and alexv@sui.gda.itesm.mx.
1502 */
1503 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
1504 params->regs[10+0x0] = 0x6b;
1505 params->regs[10+0x1] = 0x59;
1506 params->regs[10+0x2] = 0x5a;
1507 params->regs[10+0x3] = 0x8e;
1508 params->regs[10+0x4] = 0x5e;
1509 params->regs[10+0x5] = 0x8a;
1510 params->regs[10+0x13] = 45;
1511 params->regs[35+0x13] = 0;
1512 }
1513 #endif /* VGA_WIDTH90 */
1514 #endif /* !VGA_NO_MODE_CHANGE */
1515
1516 static int
1517 vga_set_mode(video_adapter_t *adp, int mode)
1518 {
1519 #ifndef VGA_NO_MODE_CHANGE
1520 video_info_t info;
1521 adp_state_t params;
1522
1523 prologue(adp, V_ADP_MODECHANGE, ENODEV);
1524
1525 mode = map_gen_mode_num(adp->va_type,
1526 adp->va_flags & V_ADP_COLOR, mode);
1527 if (vga_get_info(adp, mode, &info))
1528 return EINVAL;
1529
1530 #if VGA_DEBUG > 1
1531 printf("vga_set_mode(): setting mode %d\n", mode);
1532 #endif
1533
1534 params.sig = V_STATE_SIG;
1535 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1536
1537 switch (mode) {
1538 #ifdef VGA_WIDTH90
1539 case M_VGA_C90x60: case M_VGA_M90x60:
1540 set_width90(¶ms);
1541 /* FALLTHROUGH */
1542 #endif
1543 case M_VGA_C80x60: case M_VGA_M80x60:
1544 params.regs[2] = 0x08;
1545 params.regs[19] = 0x47;
1546 goto special_480l;
1547
1548 #ifdef VGA_WIDTH90
1549 case M_VGA_C90x30: case M_VGA_M90x30:
1550 set_width90(¶ms);
1551 /* FALLTHROUGH */
1552 #endif
1553 case M_VGA_C80x30: case M_VGA_M80x30:
1554 params.regs[19] = 0x4f;
1555 special_480l:
1556 params.regs[9] |= 0xc0;
1557 params.regs[16] = 0x08;
1558 params.regs[17] = 0x3e;
1559 params.regs[26] = 0xea;
1560 params.regs[28] = 0xdf;
1561 params.regs[31] = 0xe7;
1562 params.regs[32] = 0x04;
1563 goto setup_mode;
1564
1565 #ifdef VGA_WIDTH90
1566 case M_VGA_C90x43: case M_VGA_M90x43:
1567 set_width90(¶ms);
1568 /* FALLTHROUGH */
1569 #endif
1570 case M_ENH_C80x43: case M_ENH_B80x43:
1571 params.regs[28] = 87;
1572 goto special_80x50;
1573
1574 #ifdef VGA_WIDTH90
1575 case M_VGA_C90x50: case M_VGA_M90x50:
1576 set_width90(¶ms);
1577 /* FALLTHROUGH */
1578 #endif
1579 case M_VGA_C80x50: case M_VGA_M80x50:
1580 special_80x50:
1581 params.regs[2] = 8;
1582 params.regs[19] = 7;
1583 goto setup_mode;
1584
1585 #ifdef VGA_WIDTH90
1586 case M_VGA_C90x25: case M_VGA_M90x25:
1587 set_width90(¶ms);
1588 /* FALLTHROUGH */
1589 #endif
1590 case M_VGA_C40x25: case M_VGA_C80x25:
1591 case M_VGA_M80x25:
1592 case M_B40x25: case M_C40x25:
1593 case M_B80x25: case M_C80x25:
1594 case M_ENH_B40x25: case M_ENH_C40x25:
1595 case M_ENH_B80x25: case M_ENH_C80x25:
1596 case M_EGAMONO80x25:
1597
1598 setup_mode:
1599 vga_load_state(adp, ¶ms);
1600 break;
1601
1602 case M_VGA_MODEX:
1603 /* "unchain" the VGA mode */
1604 params.regs[5-1+0x04] &= 0xf7;
1605 params.regs[5-1+0x04] |= 0x04;
1606 /* turn off doubleword mode */
1607 params.regs[10+0x14] &= 0xbf;
1608 /* turn off word addressing */
1609 params.regs[10+0x17] |= 0x40;
1610 /* set logical screen width */
1611 params.regs[10+0x13] = 80;
1612 /* set 240 lines */
1613 params.regs[10+0x11] = 0x2c;
1614 params.regs[10+0x06] = 0x0d;
1615 params.regs[10+0x07] = 0x3e;
1616 params.regs[10+0x10] = 0xea;
1617 params.regs[10+0x11] = 0xac;
1618 params.regs[10+0x12] = 0xdf;
1619 params.regs[10+0x15] = 0xe7;
1620 params.regs[10+0x16] = 0x06;
1621 /* set vertical sync polarity to reflect aspect ratio */
1622 params.regs[9] = 0xe3;
1623 goto setup_grmode;
1624
1625 case M_BG320: case M_CG320: case M_BG640:
1626 case M_CG320_D: case M_CG640_E:
1627 case M_CG640x350: case M_ENH_CG640:
1628 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1629
1630 setup_grmode:
1631 vga_load_state(adp, ¶ms);
1632 break;
1633
1634 default:
1635 return EINVAL;
1636 }
1637
1638 adp->va_mode = mode;
1639 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1640 update_adapter_info(adp, &info);
1641
1642 /* move hardware cursor out of the way */
1643 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
1644
1645 return 0;
1646 #else /* VGA_NO_MODE_CHANGE */
1647 return ENODEV;
1648 #endif /* VGA_NO_MODE_CHANGE */
1649 }
1650
1651 #ifndef VGA_NO_FONT_LOADING
1652
1653 static void
1654 set_font_mode(video_adapter_t *adp, u_char *buf)
1655 {
1656 u_char *mp;
1657 int s;
1658
1659 s = splhigh();
1660
1661 /* save register values */
1662 if (adp->va_type == KD_VGA) {
1663 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1664 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1665 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1666 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1667 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1668 inb(adp->va_crtc_addr + 6);
1669 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1670 } else /* if (adp->va_type == KD_EGA) */ {
1671 /*
1672 * EGA cannot be read; copy parameters from the mode parameter
1673 * table.
1674 */
1675 mp = get_mode_param(adp->va_mode);
1676 buf[0] = mp[5 + 0x02 - 1];
1677 buf[1] = mp[5 + 0x04 - 1];
1678 buf[2] = mp[55 + 0x04];
1679 buf[3] = mp[55 + 0x05];
1680 buf[4] = mp[55 + 0x06];
1681 buf[5] = mp[35 + 0x10];
1682 }
1683
1684 /* setup vga for loading fonts */
1685 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1686 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1687 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1688 outb(ATC, 0x20); /* enable palette */
1689
1690 #if VGA_SLOW_IOACCESS
1691 #ifdef VGA_ALT_SEQACCESS
1692 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1693 #endif
1694 outb(TSIDX, 0x02); outb(TSREG, 0x04);
1695 outb(TSIDX, 0x04); outb(TSREG, 0x07);
1696 #ifdef VGA_ALT_SEQACCESS
1697 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1698 #endif
1699 outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
1700 outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
1701 outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
1702 #else /* VGA_SLOW_IOACCESS */
1703 #ifdef VGA_ALT_SEQACCESS
1704 outw(TSIDX, 0x0100);
1705 #endif
1706 outw(TSIDX, 0x0402);
1707 outw(TSIDX, 0x0704);
1708 #ifdef VGA_ALT_SEQACCESS
1709 outw(TSIDX, 0x0300);
1710 #endif
1711 outw(GDCIDX, 0x0204);
1712 outw(GDCIDX, 0x0005);
1713 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1714 #endif /* VGA_SLOW_IOACCESS */
1715
1716 splx(s);
1717 }
1718
1719 static void
1720 set_normal_mode(video_adapter_t *adp, u_char *buf)
1721 {
1722 int s;
1723
1724 s = splhigh();
1725
1726 /* setup vga for normal operation mode again */
1727 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1728 outb(ATC, 0x10); outb(ATC, buf[5]);
1729 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
1730 outb(ATC, 0x20); /* enable palette */
1731
1732 #if VGA_SLOW_IOACCESS
1733 #ifdef VGA_ALT_SEQACCESS
1734 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1735 #endif
1736 outb(TSIDX, 0x02); outb(TSREG, buf[0]);
1737 outb(TSIDX, 0x04); outb(TSREG, buf[1]);
1738 #ifdef VGA_ALT_SEQACCESS
1739 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1740 #endif
1741 outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
1742 outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
1743 if (adp->va_crtc_addr == MONO_CRTC) {
1744 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
1745 } else {
1746 outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
1747 }
1748 #else /* VGA_SLOW_IOACCESS */
1749 #ifdef VGA_ALT_SEQACCESS
1750 outw(TSIDX, 0x0100);
1751 #endif
1752 outw(TSIDX, 0x0002 | (buf[0] << 8));
1753 outw(TSIDX, 0x0004 | (buf[1] << 8));
1754 #ifdef VGA_ALT_SEQACCESS
1755 outw(TSIDX, 0x0300);
1756 #endif
1757 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1758 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1759 if (adp->va_crtc_addr == MONO_CRTC)
1760 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
1761 else
1762 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1763 #endif /* VGA_SLOW_IOACCESS */
1764
1765 splx(s);
1766 }
1767
1768 #endif /* VGA_NO_FONT_LOADING */
1769
1770 /*
1771 * save_font():
1772 * Read the font data in the requested font page from the video adapter.
1773 *
1774 * EGA/VGA
1775 */
1776 static int
1777 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1778 int ch, int count)
1779 {
1780 #ifndef VGA_NO_FONT_LOADING
1781 u_char buf[PARAM_BUFSIZE];
1782 u_int32_t segment;
1783 int c;
1784 #ifdef VGA_ALT_SEQACCESS
1785 int s;
1786 u_char val = 0;
1787 #endif
1788
1789 prologue(adp, V_ADP_FONT, ENODEV);
1790
1791 if (fontsize < 14) {
1792 /* FONT_8 */
1793 fontsize = 8;
1794 } else if (fontsize >= 32) {
1795 fontsize = 32;
1796 } else if (fontsize >= 16) {
1797 /* FONT_16 */
1798 fontsize = 16;
1799 } else {
1800 /* FONT_14 */
1801 fontsize = 14;
1802 }
1803
1804 if (page < 0 || page >= 8)
1805 return EINVAL;
1806 segment = FONT_BUF + 0x4000*page;
1807 if (page > 3)
1808 segment -= 0xe000;
1809
1810 #ifdef VGA_ALT_SEQACCESS
1811 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1812 s = splhigh();
1813 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1814 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1815 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1816 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1817 splx(s);
1818 }
1819 #endif
1820
1821 set_font_mode(adp, buf);
1822 if (fontsize == 32) {
1823 bcopy_fromio(segment + ch*32, data, fontsize*count);
1824 } else {
1825 for (c = ch; count > 0; ++c, --count) {
1826 bcopy_fromio(segment + c*32, data, fontsize);
1827 data += fontsize;
1828 }
1829 }
1830 set_normal_mode(adp, buf);
1831
1832 #ifdef VGA_ALT_SEQACCESS
1833 if (adp->va_type == KD_VGA) {
1834 s = splhigh();
1835 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1836 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1837 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1838 splx(s);
1839 }
1840 #endif
1841
1842 return 0;
1843 #else /* VGA_NO_FONT_LOADING */
1844 return ENODEV;
1845 #endif /* VGA_NO_FONT_LOADING */
1846 }
1847
1848 /*
1849 * load_font():
1850 * Set the font data in the requested font page.
1851 * NOTE: it appears that some recent video adapters do not support
1852 * the font page other than 0... XXX
1853 *
1854 * EGA/VGA
1855 */
1856 static int
1857 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1858 int ch, int count)
1859 {
1860 #ifndef VGA_NO_FONT_LOADING
1861 u_char buf[PARAM_BUFSIZE];
1862 u_int32_t segment;
1863 int c;
1864 #ifdef VGA_ALT_SEQACCESS
1865 int s;
1866 u_char val = 0;
1867 #endif
1868
1869 prologue(adp, V_ADP_FONT, ENODEV);
1870
1871 if (fontsize < 14) {
1872 /* FONT_8 */
1873 fontsize = 8;
1874 } else if (fontsize >= 32) {
1875 fontsize = 32;
1876 } else if (fontsize >= 16) {
1877 /* FONT_16 */
1878 fontsize = 16;
1879 } else {
1880 /* FONT_14 */
1881 fontsize = 14;
1882 }
1883
1884 if (page < 0 || page >= 8)
1885 return EINVAL;
1886 segment = FONT_BUF + 0x4000*page;
1887 if (page > 3)
1888 segment -= 0xe000;
1889
1890 #ifdef VGA_ALT_SEQACCESS
1891 if (adp->va_type == KD_VGA) { /* what about EGA? XXX */
1892 s = splhigh();
1893 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1894 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1895 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1896 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1897 splx(s);
1898 }
1899 #endif
1900
1901 set_font_mode(adp, buf);
1902 if (fontsize == 32) {
1903 bcopy_toio(data, segment + ch*32, fontsize*count);
1904 } else {
1905 for (c = ch; count > 0; ++c, --count) {
1906 bcopy_toio(data, segment + c*32, fontsize);
1907 data += fontsize;
1908 }
1909 }
1910 set_normal_mode(adp, buf);
1911
1912 #ifdef VGA_ALT_SEQACCESS
1913 if (adp->va_type == KD_VGA) {
1914 s = splhigh();
1915 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1916 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1917 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1918 splx(s);
1919 }
1920 #endif
1921
1922 return 0;
1923 #else /* VGA_NO_FONT_LOADING */
1924 return ENODEV;
1925 #endif /* VGA_NO_FONT_LOADING */
1926 }
1927
1928 /*
1929 * show_font():
1930 * Activate the requested font page.
1931 * NOTE: it appears that some recent video adapters do not support
1932 * the font page other than 0... XXX
1933 *
1934 * EGA/VGA
1935 */
1936 static int
1937 vga_show_font(video_adapter_t *adp, int page)
1938 {
1939 #ifndef VGA_NO_FONT_LOADING
1940 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1941 int s;
1942
1943 prologue(adp, V_ADP_FONT, ENODEV);
1944 if (page < 0 || page >= 8)
1945 return EINVAL;
1946
1947 s = splhigh();
1948 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1949 splx(s);
1950
1951 return 0;
1952 #else /* VGA_NO_FONT_LOADING */
1953 return ENODEV;
1954 #endif /* VGA_NO_FONT_LOADING */
1955 }
1956
1957 /*
1958 * save_palette():
1959 * Read DAC values. The values have expressed in 8 bits.
1960 *
1961 * VGA
1962 */
1963 static int
1964 vga_save_palette(video_adapter_t *adp, u_char *palette)
1965 {
1966 int i;
1967
1968 prologue(adp, V_ADP_PALETTE, ENODEV);
1969
1970 /*
1971 * We store 8 bit values in the palette buffer, while the standard
1972 * VGA has 6 bit DAC .
1973 */
1974 outb(PALRADR, 0x00);
1975 for (i = 0; i < 256*3; ++i)
1976 palette[i] = inb(PALDATA) << 2;
1977 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1978 return 0;
1979 }
1980
1981 static int
1982 vga_save_palette2(video_adapter_t *adp, int base, int count,
1983 u_char *r, u_char *g, u_char *b)
1984 {
1985 int i;
1986
1987 prologue(adp, V_ADP_PALETTE, ENODEV);
1988
1989 outb(PALRADR, base);
1990 for (i = 0; i < count; ++i) {
1991 r[i] = inb(PALDATA) << 2;
1992 g[i] = inb(PALDATA) << 2;
1993 b[i] = inb(PALDATA) << 2;
1994 }
1995 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
1996 return 0;
1997 }
1998
1999 /*
2000 * load_palette():
2001 * Set DAC values.
2002 *
2003 * VGA
2004 */
2005 static int
2006 vga_load_palette(video_adapter_t *adp, u_char *palette)
2007 {
2008 int i;
2009
2010 prologue(adp, V_ADP_PALETTE, ENODEV);
2011
2012 outb(PIXMASK, 0xff); /* no pixelmask */
2013 outb(PALWADR, 0x00);
2014 for (i = 0; i < 256*3; ++i)
2015 outb(PALDATA, palette[i] >> 2);
2016 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2017 outb(ATC, 0x20); /* enable palette */
2018 return 0;
2019 }
2020
2021 static int
2022 vga_load_palette2(video_adapter_t *adp, int base, int count,
2023 u_char *r, u_char *g, u_char *b)
2024 {
2025 int i;
2026
2027 prologue(adp, V_ADP_PALETTE, ENODEV);
2028
2029 outb(PIXMASK, 0xff); /* no pixelmask */
2030 outb(PALWADR, base);
2031 for (i = 0; i < count; ++i) {
2032 outb(PALDATA, r[i] >> 2);
2033 outb(PALDATA, g[i] >> 2);
2034 outb(PALDATA, b[i] >> 2);
2035 }
2036 inb(adp->va_crtc_addr + 6); /* reset flip/flop */
2037 outb(ATC, 0x20); /* enable palette */
2038 return 0;
2039 }
2040
2041 /*
2042 * set_border():
2043 * Change the border color.
2044 *
2045 * CGA/EGA/VGA
2046 */
2047 static int
2048 vga_set_border(video_adapter_t *adp, int color)
2049 {
2050 prologue(adp, V_ADP_BORDER, ENODEV);
2051
2052 switch (adp->va_type) {
2053 case KD_EGA:
2054 case KD_VGA:
2055 inb(adp->va_crtc_addr + 6); /* reset flip-flop */
2056 outb(ATC, 0x31); outb(ATC, color & 0xff);
2057 break;
2058 case KD_CGA:
2059 outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
2060 break;
2061 case KD_MONO:
2062 case KD_HERCULES:
2063 default:
2064 break;
2065 }
2066 return 0;
2067 }
2068
2069 /*
2070 * save_state():
2071 * Read video register values.
2072 * NOTE: this function only reads the standard EGA/VGA registers.
2073 * any extra/extended registers of SVGA adapters are not saved.
2074 *
2075 * VGA
2076 */
2077 static int
2078 vga_save_state(video_adapter_t *adp, void *p, size_t size)
2079 {
2080 video_info_t info;
2081 u_char *buf;
2082 int crtc_addr;
2083 int i, j;
2084 int s;
2085
2086 if (size == 0) {
2087 /* return the required buffer size */
2088 prologue(adp, V_ADP_STATESAVE, 0);
2089 return sizeof(adp_state_t);
2090 } else {
2091 prologue(adp, V_ADP_STATESAVE, ENODEV);
2092 if (size < sizeof(adp_state_t))
2093 return EINVAL;
2094 }
2095
2096 ((adp_state_t *)p)->sig = V_STATE_SIG;
2097 buf = ((adp_state_t *)p)->regs;
2098 bzero(buf, V_MODE_PARAM_SIZE);
2099 crtc_addr = adp->va_crtc_addr;
2100
2101 s = splhigh();
2102
2103 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2104 for (i = 0, j = 5; i < 4; i++) {
2105 outb(TSIDX, i + 1);
2106 buf[j++] = inb(TSREG);
2107 }
2108 buf[9] = inb(MISC + 10); /* dot-clock */
2109 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2110
2111 for (i = 0, j = 10; i < 25; i++) { /* crtc */
2112 outb(crtc_addr, i);
2113 buf[j++] = inb(crtc_addr + 1);
2114 }
2115 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
2116 inb(crtc_addr + 6); /* reset flip-flop */
2117 outb(ATC, i);
2118 buf[j++] = inb(ATC + 1);
2119 }
2120 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
2121 outb(GDCIDX, i);
2122 buf[j++] = inb(GDCREG);
2123 }
2124 inb(crtc_addr + 6); /* reset flip-flop */
2125 outb(ATC, 0x20); /* enable palette */
2126
2127 splx(s);
2128
2129 #if 1
2130 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
2131 if (info.vi_flags & V_INFO_GRAPHICS) {
2132 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
2133 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
2134 } else {
2135 buf[0] = info.vi_width; /* COLS */
2136 buf[1] = info.vi_height - 1; /* ROWS */
2137 }
2138 buf[2] = info.vi_cheight; /* POINTS */
2139 } else {
2140 /* XXX: shouldn't be happening... */
2141 printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
2142 adp->va_unit, adp->va_name);
2143 }
2144 #else
2145 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
2146 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
2147 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
2148 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
2149 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
2150 #endif
2151
2152 return 0;
2153 }
2154
2155 /*
2156 * load_state():
2157 * Set video registers at once.
2158 * NOTE: this function only updates the standard EGA/VGA registers.
2159 * any extra/extended registers of SVGA adapters are not changed.
2160 *
2161 * EGA/VGA
2162 */
2163 static int
2164 vga_load_state(video_adapter_t *adp, void *p)
2165 {
2166 u_char *buf;
2167 int crtc_addr;
2168 int s;
2169 int i;
2170
2171 prologue(adp, V_ADP_STATELOAD, ENODEV);
2172 if (((adp_state_t *)p)->sig != V_STATE_SIG)
2173 return EINVAL;
2174
2175 buf = ((adp_state_t *)p)->regs;
2176 crtc_addr = adp->va_crtc_addr;
2177
2178 #if VGA_DEBUG > 1
2179 dump_buffer(buf, V_MODE_PARAM_SIZE);
2180 #endif
2181
2182 s = splhigh();
2183
2184 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
2185 for (i = 0; i < 4; ++i) { /* program sequencer */
2186 outb(TSIDX, i + 1);
2187 outb(TSREG, buf[i + 5]);
2188 }
2189 outb(MISC, buf[9]); /* set dot-clock */
2190 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
2191 outb(crtc_addr, 0x11);
2192 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
2193 for (i = 0; i < 25; ++i) { /* program crtc */
2194 outb(crtc_addr, i);
2195 outb(crtc_addr + 1, buf[i + 10]);
2196 }
2197 inb(crtc_addr+6); /* reset flip-flop */
2198 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
2199 outb(ATC, i);
2200 outb(ATC, buf[i + 35]);
2201 }
2202 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
2203 outb(GDCIDX, i);
2204 outb(GDCREG, buf[i + 55]);
2205 }
2206 inb(crtc_addr + 6); /* reset flip-flop */
2207 outb(ATC, 0x20); /* enable palette */
2208
2209 #if notyet /* a temporary workaround for kernel panic, XXX */
2210 #ifndef VGA_NO_BIOS
2211 if (adp->va_unit == V_ADP_PRIMARY) {
2212 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
2213 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
2214 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
2215 #if 0
2216 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
2217 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
2218 #endif
2219 }
2220 #endif /* VGA_NO_BIOS */
2221 #endif /* notyet */
2222
2223 splx(s);
2224 return 0;
2225 }
2226
2227 /*
2228 * set_origin():
2229 * Change the origin (window mapping) of the banked frame buffer.
2230 */
2231 static int
2232 vga_set_origin(video_adapter_t *adp, off_t offset)
2233 {
2234 /*
2235 * The standard video modes do not require window mapping;
2236 * always return error.
2237 */
2238 return ENODEV;
2239 }
2240
2241 /*
2242 * read_hw_cursor():
2243 * Read the position of the hardware text cursor.
2244 *
2245 * all adapters
2246 */
2247 static int
2248 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
2249 {
2250 u_int16_t off;
2251 int s;
2252
2253 if (!vga_init_done)
2254 return ENXIO;
2255
2256 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2257 return ENODEV;
2258
2259 s = spltty();
2260 outb(adp->va_crtc_addr, 14);
2261 off = inb(adp->va_crtc_addr + 1);
2262 outb(adp->va_crtc_addr, 15);
2263 off = (off << 8) | inb(adp->va_crtc_addr + 1);
2264 splx(s);
2265
2266 *row = off / adp->va_info.vi_width;
2267 *col = off % adp->va_info.vi_width;
2268
2269 return 0;
2270 }
2271
2272 /*
2273 * set_hw_cursor():
2274 * Move the hardware text cursor. If col and row are both -1,
2275 * the cursor won't be shown.
2276 *
2277 * all adapters
2278 */
2279 static int
2280 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
2281 {
2282 u_int16_t off;
2283 int s;
2284
2285 if (!vga_init_done)
2286 return ENXIO;
2287
2288 if ((col == -1) && (row == -1)) {
2289 off = -1;
2290 } else {
2291 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
2292 return ENODEV;
2293 off = row*adp->va_info.vi_width + col;
2294 }
2295
2296 s = spltty();
2297 outb(adp->va_crtc_addr, 14);
2298 outb(adp->va_crtc_addr + 1, off >> 8);
2299 outb(adp->va_crtc_addr, 15);
2300 outb(adp->va_crtc_addr + 1, off & 0x00ff);
2301 splx(s);
2302
2303 return 0;
2304 }
2305
2306 /*
2307 * set_hw_cursor_shape():
2308 * Change the shape of the hardware text cursor. If the height is
2309 * zero or negative, the cursor won't be shown.
2310 *
2311 * all adapters
2312 */
2313 static int
2314 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
2315 int celsize, int blink)
2316 {
2317 int s;
2318
2319 if (!vga_init_done)
2320 return ENXIO;
2321
2322 s = spltty();
2323 switch (adp->va_type) {
2324 case KD_VGA:
2325 case KD_CGA:
2326 case KD_MONO:
2327 case KD_HERCULES:
2328 default:
2329 if (height <= 0) {
2330 /* make the cursor invisible */
2331 outb(adp->va_crtc_addr, 10);
2332 outb(adp->va_crtc_addr + 1, 32);
2333 outb(adp->va_crtc_addr, 11);
2334 outb(adp->va_crtc_addr + 1, 0);
2335 } else {
2336 outb(adp->va_crtc_addr, 10);
2337 outb(adp->va_crtc_addr + 1, celsize - base - height);
2338 outb(adp->va_crtc_addr, 11);
2339 outb(adp->va_crtc_addr + 1, celsize - base - 1);
2340 }
2341 break;
2342 case KD_EGA:
2343 if (height <= 0) {
2344 /* make the cursor invisible */
2345 outb(adp->va_crtc_addr, 10);
2346 outb(adp->va_crtc_addr + 1, celsize);
2347 outb(adp->va_crtc_addr, 11);
2348 outb(adp->va_crtc_addr + 1, 0);
2349 } else {
2350 outb(adp->va_crtc_addr, 10);
2351 outb(adp->va_crtc_addr + 1, celsize - base - height);
2352 outb(adp->va_crtc_addr, 11);
2353 outb(adp->va_crtc_addr + 1, celsize - base);
2354 }
2355 break;
2356 }
2357 splx(s);
2358
2359 return 0;
2360 }
2361
2362 /*
2363 * blank_display()
2364 * Put the display in power save/power off mode.
2365 *
2366 * all adapters
2367 */
2368 static int
2369 vga_blank_display(video_adapter_t *adp, int mode)
2370 {
2371 u_char val;
2372 int s;
2373
2374 s = splhigh();
2375 switch (adp->va_type) {
2376 case KD_VGA:
2377 switch (mode) {
2378 case V_DISPLAY_SUSPEND:
2379 case V_DISPLAY_STAND_BY:
2380 outb(TSIDX, 0x01);
2381 val = inb(TSREG);
2382 outb(TSIDX, 0x01);
2383 outb(TSREG, val | 0x20);
2384 outb(adp->va_crtc_addr, 0x17);
2385 val = inb(adp->va_crtc_addr + 1);
2386 outb(adp->va_crtc_addr + 1, val & ~0x80);
2387 break;
2388 case V_DISPLAY_BLANK:
2389 outb(TSIDX, 0x01);
2390 val = inb(TSREG);
2391 outb(TSIDX, 0x01);
2392 outb(TSREG, val | 0x20);
2393 break;
2394 case V_DISPLAY_ON:
2395 outb(TSIDX, 0x01);
2396 val = inb(TSREG);
2397 outb(TSIDX, 0x01);
2398 outb(TSREG, val & 0xDF);
2399 outb(adp->va_crtc_addr, 0x17);
2400 val = inb(adp->va_crtc_addr + 1);
2401 outb(adp->va_crtc_addr + 1, val | 0x80);
2402 break;
2403 }
2404 break;
2405
2406 case KD_EGA:
2407 /* no support yet */
2408 splx(s);
2409 return ENODEV;
2410
2411 case KD_CGA:
2412 switch (mode) {
2413 case V_DISPLAY_SUSPEND:
2414 case V_DISPLAY_STAND_BY:
2415 case V_DISPLAY_BLANK:
2416 outb(adp->va_crtc_addr + 4, 0x25);
2417 break;
2418 case V_DISPLAY_ON:
2419 outb(adp->va_crtc_addr + 4, 0x2d);
2420 break;
2421 }
2422 break;
2423
2424 case KD_MONO:
2425 case KD_HERCULES:
2426 switch (mode) {
2427 case V_DISPLAY_SUSPEND:
2428 case V_DISPLAY_STAND_BY:
2429 case V_DISPLAY_BLANK:
2430 outb(adp->va_crtc_addr + 4, 0x21);
2431 break;
2432 case V_DISPLAY_ON:
2433 outb(adp->va_crtc_addr + 4, 0x29);
2434 break;
2435 }
2436 break;
2437 default:
2438 break;
2439 }
2440 splx(s);
2441
2442 return 0;
2443 }
2444
2445 /*
2446 * mmap():
2447 * Mmap frame buffer.
2448 *
2449 * all adapters
2450 */
2451 static int
2452 vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
2453 {
2454 if (adp->va_info.vi_flags & V_INFO_LINEAR)
2455 return -1;
2456
2457 #if VGA_DEBUG > 0
2458 printf("vga_mmap_buf(): window:0x%jx, offset:0x%jx\n",
2459 (uintmax_t)adp->va_info.vi_window, (uintmax_t)offset);
2460 #endif
2461
2462 /* XXX: is this correct? */
2463 if (offset > adp->va_window_size - PAGE_SIZE)
2464 return -1;
2465
2466 #ifdef __i386__
2467 return i386_btop(adp->va_info.vi_window + offset);
2468 #endif
2469 #ifdef __alpha__
2470 return alpha_btop(adp->va_info.vi_window + offset);
2471 #endif
2472 #ifdef __ia64__
2473 return ia64_btop(adp->va_info.vi_window + offset);
2474 #endif
2475 }
2476
2477 #ifndef VGA_NO_MODE_CHANGE
2478
2479 static void
2480 planar_fill(video_adapter_t *adp, int val)
2481 {
2482 int length;
2483 int at; /* position in the frame buffer */
2484 int l;
2485
2486 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2487 outw(GDCIDX, 0x0003); /* data rotate/function select */
2488 outw(GDCIDX, 0x0f01); /* set/reset enable */
2489 outw(GDCIDX, 0xff08); /* bit mask */
2490 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2491 at = 0;
2492 length = adp->va_line_width*adp->va_info.vi_height;
2493 while (length > 0) {
2494 l = imin(length, adp->va_window_size);
2495 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2496 bzero_io(adp->va_window, l);
2497 length -= l;
2498 at += l;
2499 }
2500 outw(GDCIDX, 0x0000); /* set/reset */
2501 outw(GDCIDX, 0x0001); /* set/reset enable */
2502 }
2503
2504 static void
2505 packed_fill(video_adapter_t *adp, int val)
2506 {
2507 int length;
2508 int at; /* position in the frame buffer */
2509 int l;
2510
2511 at = 0;
2512 length = adp->va_line_width*adp->va_info.vi_height;
2513 while (length > 0) {
2514 l = imin(length, adp->va_window_size);
2515 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2516 fill_io(val, adp->va_window, l);
2517 length -= l;
2518 at += l;
2519 }
2520 }
2521
2522 static void
2523 direct_fill(video_adapter_t *adp, int val)
2524 {
2525 int length;
2526 int at; /* position in the frame buffer */
2527 int l;
2528
2529 at = 0;
2530 length = adp->va_line_width*adp->va_info.vi_height;
2531 while (length > 0) {
2532 l = imin(length, adp->va_window_size);
2533 (*vidsw[adp->va_index]->set_win_org)(adp, at);
2534 switch (adp->va_info.vi_pixel_size) {
2535 case sizeof(u_int16_t):
2536 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
2537 break;
2538 case 3:
2539 /* FIXME */
2540 break;
2541 case sizeof(u_int32_t):
2542 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
2543 break;
2544 }
2545 length -= l;
2546 at += l;
2547 }
2548 }
2549
2550 static int
2551 vga_clear(video_adapter_t *adp)
2552 {
2553 switch (adp->va_info.vi_mem_model) {
2554 case V_INFO_MM_TEXT:
2555 /* do nothing? XXX */
2556 break;
2557 case V_INFO_MM_PLANAR:
2558 planar_fill(adp, 0);
2559 break;
2560 case V_INFO_MM_PACKED:
2561 packed_fill(adp, 0);
2562 break;
2563 case V_INFO_MM_DIRECT:
2564 direct_fill(adp, 0);
2565 break;
2566 }
2567 return 0;
2568 }
2569
2570 #ifdef notyet
2571 static void
2572 planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2573 {
2574 int banksize;
2575 int bank;
2576 int pos;
2577 int offset; /* offset within window */
2578 int bx;
2579 int l;
2580
2581 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
2582 outw(GDCIDX, 0x0003); /* data rotate/function select */
2583 outw(GDCIDX, 0x0f01); /* set/reset enable */
2584 outw(GDCIDX, 0xff08); /* bit mask */
2585 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
2586
2587 banksize = adp->va_window_size;
2588 bank = -1;
2589 while (cy > 0) {
2590 pos = adp->va_line_width*y + x/8;
2591 if (bank != pos/banksize) {
2592 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2593 bank = pos/banksize;
2594 }
2595 offset = pos%banksize;
2596 bx = (x + cx)/8 - x/8;
2597 if (x % 8) {
2598 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
2599 writeb(adp->va_window + offset, 0);
2600 ++offset;
2601 --bx;
2602 if (offset >= banksize) {
2603 offset = 0;
2604 ++bank; /* next bank */
2605 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2606 }
2607 outw(GDCIDX, 0xff08); /* bit mask */
2608 }
2609 while (bx > 0) {
2610 l = imin(bx, banksize);
2611 bzero_io(adp->va_window + offset, l);
2612 offset += l;
2613 bx -= l;
2614 if (offset >= banksize) {
2615 offset = 0;
2616 ++bank; /* next bank */
2617 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2618 }
2619 }
2620 if ((x + cx) % 8) {
2621 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
2622 writeb(adp->va_window + offset, 0);
2623 ++offset;
2624 if (offset >= banksize) {
2625 offset = 0;
2626 ++bank; /* next bank */
2627 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2628 }
2629 outw(GDCIDX, 0xff08); /* bit mask */
2630 }
2631 ++y;
2632 --cy;
2633 }
2634
2635 outw(GDCIDX, 0xff08); /* bit mask */
2636 outw(GDCIDX, 0x0000); /* set/reset */
2637 outw(GDCIDX, 0x0001); /* set/reset enable */
2638 }
2639
2640 static void
2641 packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2642 {
2643 int banksize;
2644 int bank;
2645 int pos;
2646 int offset; /* offset within window */
2647 int end;
2648
2649 banksize = adp->va_window_size;
2650 bank = -1;
2651 cx *= adp->va_info.vi_pixel_size;
2652 while (cy > 0) {
2653 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
2654 if (bank != pos/banksize) {
2655 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2656 bank = pos/banksize;
2657 }
2658 offset = pos%banksize;
2659 end = imin(offset + cx, banksize);
2660 fill_io(val, adp->va_window + offset,
2661 (end - offset)/adp->va_info.vi_pixel_size);
2662 /* the line may cross the window boundary */
2663 if (offset + cx > banksize) {
2664 ++bank; /* next bank */
2665 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2666 end = offset + cx - banksize;
2667 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
2668 }
2669 ++y;
2670 --cy;
2671 }
2672 }
2673
2674 static void
2675 direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2676 {
2677 int banksize;
2678 int bank;
2679 int pos;
2680 int offset; /* offset within window */
2681 int end;
2682
2683 /*
2684 * XXX: the function assumes that banksize is a muliple of
2685 * sizeof(u_int16_t).
2686 */
2687 banksize = adp->va_window_size;
2688 bank = -1;
2689 cx *= sizeof(u_int16_t);
2690 while (cy > 0) {
2691 pos = adp->va_line_width*y + x*sizeof(u_int16_t);
2692 if (bank != pos/banksize) {
2693 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2694 bank = pos/banksize;
2695 }
2696 offset = pos%banksize;
2697 end = imin(offset + cx, banksize);
2698 fillw_io(val, adp->va_window + offset,
2699 (end - offset)/sizeof(u_int16_t));
2700 /* the line may cross the window boundary */
2701 if (offset + cx > banksize) {
2702 ++bank; /* next bank */
2703 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2704 end = offset + cx - banksize;
2705 fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
2706 }
2707 ++y;
2708 --cy;
2709 }
2710 }
2711
2712 static void
2713 direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2714 {
2715 int banksize;
2716 int bank;
2717 int pos;
2718 int offset; /* offset within window */
2719 int end;
2720 int i;
2721 int j;
2722 u_int8_t b[3];
2723
2724 b[0] = val & 0x0000ff;
2725 b[1] = (val >> 8) & 0x0000ff;
2726 b[2] = (val >> 16) & 0x0000ff;
2727 banksize = adp->va_window_size;
2728 bank = -1;
2729 cx *= 3;
2730 while (cy > 0) {
2731 pos = adp->va_line_width*y + x*3;
2732 if (bank != pos/banksize) {
2733 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2734 bank = pos/banksize;
2735 }
2736 offset = pos%banksize;
2737 end = imin(offset + cx, banksize);
2738 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
2739 writeb(adp->va_window + j, b[i]);
2740 }
2741 /* the line may cross the window boundary */
2742 if (offset + cx >= banksize) {
2743 ++bank; /* next bank */
2744 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2745 j = 0;
2746 end = offset + cx - banksize;
2747 for (; j < end; i = (++i)%3, ++j) {
2748 writeb(adp->va_window + j, b[i]);
2749 }
2750 }
2751 ++y;
2752 --cy;
2753 }
2754 }
2755
2756 static void
2757 direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2758 {
2759 int banksize;
2760 int bank;
2761 int pos;
2762 int offset; /* offset within window */
2763 int end;
2764
2765 /*
2766 * XXX: the function assumes that banksize is a muliple of
2767 * sizeof(u_int32_t).
2768 */
2769 banksize = adp->va_window_size;
2770 bank = -1;
2771 cx *= sizeof(u_int32_t);
2772 while (cy > 0) {
2773 pos = adp->va_line_width*y + x*sizeof(u_int32_t);
2774 if (bank != pos/banksize) {
2775 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2776 bank = pos/banksize;
2777 }
2778 offset = pos%banksize;
2779 end = imin(offset + cx, banksize);
2780 filll_io(val, adp->va_window + offset,
2781 (end - offset)/sizeof(u_int32_t));
2782 /* the line may cross the window boundary */
2783 if (offset + cx > banksize) {
2784 ++bank; /* next bank */
2785 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2786 end = offset + cx - banksize;
2787 filll_io(val, adp->va_window, end/sizeof(u_int32_t));
2788 }
2789 ++y;
2790 --cy;
2791 }
2792 }
2793
2794 static int
2795 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2796 {
2797 switch (adp->va_info.vi_mem_model) {
2798 case V_INFO_MM_TEXT:
2799 /* do nothing? XXX */
2800 break;
2801 case V_INFO_MM_PLANAR:
2802 planar_fill_rect(adp, val, x, y, cx, cy);
2803 break;
2804 case V_INFO_MM_PACKED:
2805 packed_fill_rect(adp, val, x, y, cx, cy);
2806 break;
2807 case V_INFO_MM_DIRECT:
2808 switch (adp->va_info.vi_pixel_size) {
2809 case sizeof(u_int16_t):
2810 direct_fill_rect16(adp, val, x, y, cx, cy);
2811 break;
2812 case 3:
2813 direct_fill_rect24(adp, val, x, y, cx, cy);
2814 break;
2815 case sizeof(u_int32_t):
2816 direct_fill_rect32(adp, val, x, y, cx, cy);
2817 break;
2818 }
2819 break;
2820 }
2821 return 0;
2822 }
2823 #else /* !notyet */
2824 static int
2825 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2826 {
2827 return ENODEV;
2828 }
2829 #endif /* notyet */
2830
2831 static int
2832 vga_bitblt(video_adapter_t *adp,...)
2833 {
2834 /* FIXME */
2835 return ENODEV;
2836 }
2837
2838 #endif /* !VGA_NO_MODE_CHANGE */
2839
2840 static int
2841 get_palette(video_adapter_t *adp, int base, int count,
2842 u_char *red, u_char *green, u_char *blue, u_char *trans)
2843 {
2844 u_char *r;
2845 u_char *g;
2846 u_char *b;
2847
2848 if ((base < 0) || (base >= 256) || (base + count > 256))
2849 return EINVAL;
2850
2851 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2852 g = r + count;
2853 b = g + count;
2854 if (vga_save_palette2(adp, base, count, r, g, b)) {
2855 free(r, M_DEVBUF);
2856 return ENODEV;
2857 }
2858 copyout(r, red, count);
2859 copyout(g, green, count);
2860 copyout(b, blue, count);
2861 if (trans != NULL) {
2862 bzero(r, count);
2863 copyout(r, trans, count);
2864 }
2865 free(r, M_DEVBUF);
2866
2867 return 0;
2868 }
2869
2870 static int
2871 set_palette(video_adapter_t *adp, int base, int count,
2872 u_char *red, u_char *green, u_char *blue, u_char *trans)
2873 {
2874 u_char *r;
2875 u_char *g;
2876 u_char *b;
2877 int err;
2878
2879 if ((base < 0) || (base >= 256) || (base + count > 256))
2880 return EINVAL;
2881
2882 r = malloc(count*3, M_DEVBUF, M_WAITOK);
2883 g = r + count;
2884 b = g + count;
2885 copyin(red, r, count);
2886 copyin(green, g, count);
2887 copyin(blue, b, count);
2888 err = vga_load_palette2(adp, base, count, r, g, b);
2889 free(r, M_DEVBUF);
2890
2891 return (err ? ENODEV : 0);
2892 }
2893
2894 static int
2895 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
2896 {
2897 switch (cmd) {
2898 case FBIO_GETWINORG: /* get frame buffer window origin */
2899 *(u_int *)arg = 0;
2900 return 0;
2901
2902 case FBIO_SETWINORG: /* set frame buffer window origin */
2903 return ENODEV;
2904
2905 case FBIO_SETDISPSTART: /* set display start address */
2906 return (set_display_start(adp,
2907 ((video_display_start_t *)arg)->x,
2908 ((video_display_start_t *)arg)->y)
2909 ? ENODEV : 0);
2910
2911 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
2912 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
2913
2914 case FBIO_GETPALETTE: /* get color palette */
2915 return get_palette(adp, ((video_color_palette_t *)arg)->index,
2916 ((video_color_palette_t *)arg)->count,
2917 ((video_color_palette_t *)arg)->red,
2918 ((video_color_palette_t *)arg)->green,
2919 ((video_color_palette_t *)arg)->blue,
2920 ((video_color_palette_t *)arg)->transparent);
2921
2922 case FBIO_SETPALETTE: /* set color palette */
2923 return set_palette(adp, ((video_color_palette_t *)arg)->index,
2924 ((video_color_palette_t *)arg)->count,
2925 ((video_color_palette_t *)arg)->red,
2926 ((video_color_palette_t *)arg)->green,
2927 ((video_color_palette_t *)arg)->blue,
2928 ((video_color_palette_t *)arg)->transparent);
2929
2930 case FBIOGTYPE: /* get frame buffer type info. */
2931 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
2932 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
2933 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
2934 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
2935 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
2936 ((struct fbtype *)arg)->fb_cmsize = 0;
2937 else
2938 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
2939 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
2940 return 0;
2941
2942 case FBIOGETCMAP: /* get color palette */
2943 return get_palette(adp, ((struct fbcmap *)arg)->index,
2944 ((struct fbcmap *)arg)->count,
2945 ((struct fbcmap *)arg)->red,
2946 ((struct fbcmap *)arg)->green,
2947 ((struct fbcmap *)arg)->blue, NULL);
2948
2949 case FBIOPUTCMAP: /* set color palette */
2950 return set_palette(adp, ((struct fbcmap *)arg)->index,
2951 ((struct fbcmap *)arg)->count,
2952 ((struct fbcmap *)arg)->red,
2953 ((struct fbcmap *)arg)->green,
2954 ((struct fbcmap *)arg)->blue, NULL);
2955
2956 default:
2957 return fb_commonioctl(adp, cmd, arg);
2958 }
2959 }
2960
2961 static void
2962 dump_buffer(u_char *buf, size_t len)
2963 {
2964 int i;
2965
2966 for(i = 0; i < len;) {
2967 printf("%02x ", buf[i]);
2968 if ((++i % 16) == 0)
2969 printf("\n");
2970 }
2971 }
2972
2973 /*
2974 * diag():
2975 * Print some information about the video adapter and video modes,
2976 * with requested level of details.
2977 *
2978 * all adapters
2979 */
2980 static int
2981 vga_diag(video_adapter_t *adp, int level)
2982 {
2983 u_char *mp;
2984 #if FB_DEBUG > 1
2985 video_info_t info;
2986 int i;
2987 #endif
2988
2989 if (!vga_init_done)
2990 return ENXIO;
2991
2992 #if FB_DEBUG > 1
2993 #ifndef VGA_NO_BIOS
2994 printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
2995 rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
2996 printf("vga: CRTC:0x%x, video option:0x%02x, ",
2997 readw(BIOS_PADDRTOVADDR(0x463)),
2998 readb(BIOS_PADDRTOVADDR(0x487)));
2999 printf("rows:%d, cols:%d, font height:%d\n",
3000 readb(BIOS_PADDRTOVADDR(0x44a)),
3001 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
3002 readb(BIOS_PADDRTOVADDR(0x485)));
3003 #endif /* VGA_NO_BIOS */
3004 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3005 printf("vga: param table EGA/VGA:%p", video_mode_ptr);
3006 printf(", CGA/MDA:%p\n", video_mode_ptr2);
3007 printf("vga: rows_offset:%d\n", rows_offset);
3008 #endif
3009 #endif /* FB_DEBUG > 1 */
3010
3011 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
3012
3013 #if FB_DEBUG > 1
3014 if (adp->va_flags & V_ADP_MODECHANGE) {
3015 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
3016 if (bios_vmode[i].vi_mode == NA)
3017 continue;
3018 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
3019 continue;
3020 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
3021 }
3022 } else {
3023 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
3024 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
3025 }
3026 #endif /* FB_DEBUG > 1 */
3027
3028 if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
3029 return 0;
3030 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
3031 if (video_mode_ptr == NULL)
3032 printf("vga%d: %s: WARNING: video mode switching is not "
3033 "fully supported on this adapter\n",
3034 adp->va_unit, adp->va_name);
3035 #endif
3036 if (level <= 0)
3037 return 0;
3038
3039 if (adp->va_type == KD_VGA) {
3040 printf("VGA parameters upon power-up\n");
3041 dump_buffer(adpstate.regs, sizeof(adpstate.regs));
3042 printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
3043 dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
3044 }
3045
3046 mp = get_mode_param(adp->va_initial_mode);
3047 if (mp == NULL) /* this shouldn't be happening */
3048 return 0;
3049 printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
3050 dump_buffer(mp, V_MODE_PARAM_SIZE);
3051
3052 return 0;
3053 }
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