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kernel/vga: Remove a no longer needed variable.
[dragonfly.git] / sys / dev / video / fb / vga.c
blob1c6b30dea4dc2c8bf632669b4996da0d54a3ffc7
1 /*-
2 * (MPSAFE ?)
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 * $FreeBSD: src/sys/dev/fb/vga.c,v 1.9.2.1 2001/08/11 02:58:44 yokota Exp $
32 */
33
34 #include "opt_vga.h"
35 #include "opt_fb.h"
36
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
40 #include <sys/conf.h>
41 #include <sys/fcntl.h>
42 #include <sys/malloc.h>
43 #include <sys/fbio.h>
44 #include <sys/thread2.h>
45
46 #include <bus/isa/isareg.h>
47
48 #include <machine/clock.h>
49 #include <machine/md_var.h>
50 #ifdef __x86_64__
51 #include <machine/pc/bios.h>
52 #endif
53
54 #include <vm/vm.h>
55 #include <vm/vm_param.h>
56 #include <vm/pmap.h>
57
58 #include "fbreg.h"
59 #include "vgareg.h"
60
61 #ifndef VGA_DEBUG
62 #define VGA_DEBUG 0
63 #endif
64
65 int
66 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
67 {
68 video_adapter_t *adp;
69 video_switch_t *sw;
70 int error;
71
72 sw = vid_get_switch(VGA_DRIVER_NAME);
73 if (sw == NULL)
74 return 0;
75 error = (*sw->probe)(unit, &adp, NULL, flags);
76 if (error)
77 return error;
78 bcopy(adp, buf, sizeof(*buf));
79 return 0;
80 }
81
82 int
83 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
84 {
85 video_switch_t *sw;
86 int error;
87
88 sw = vid_get_switch(VGA_DRIVER_NAME);
89 if (sw == NULL)
90 return ENXIO;
91
92 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
93 if (error)
94 return error;
95 return (*sw->init)(unit, sc->adp, flags);
96 }
97
98 /* cdev driver functions */
99
100 #ifdef FB_INSTALL_CDEV
101
102 struct ucred;
103
104 int
105 vga_open(cdev_t dev, vga_softc_t *sc, int flag, int mode, struct ucred *cred)
106 {
107 if (sc == NULL)
108 return ENXIO;
109 if (mode & (O_CREAT | O_APPEND | O_TRUNC))
110 return ENODEV;
111
112 return genfbopen(&sc->gensc, sc->adp, flag, mode, cred);
113 }
114
115 int
116 vga_close(cdev_t dev, vga_softc_t *sc, int flag, int mode)
117 {
118 return genfbclose(&sc->gensc, sc->adp, flag, mode);
119 }
120
121 int
122 vga_read(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
123 {
124 return genfbread(&sc->gensc, sc->adp, uio, flag);
125 }
126
127 int
128 vga_write(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
129 {
130 return genfbread(&sc->gensc, sc->adp, uio, flag);
131 }
132
133 int
134 vga_ioctl(cdev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
135 struct ucred *cred)
136 {
137 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, cred);
138 }
139
140 int
141 vga_mmap(cdev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
142 {
143 return genfbmmap(&sc->gensc, sc->adp, offset, prot);
144 }
145
146 #endif /* FB_INSTALL_CDEV */
147
148 /* LOW-LEVEL */
149
150 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
151 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
152 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
153
154 /* various sizes */
155 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
156 #define V_MODE_PARAM_SIZE 64
157
158 /* video adapter state buffer */
159 struct adp_state {
160 int sig;
161 #define V_STATE_SIG 0x736f6962
162 u_char regs[V_MODE_PARAM_SIZE];
163 };
164 typedef struct adp_state adp_state_t;
165
166 /*
167 * NOTE: `va_window' should have a virtual address, but is initialized
168 * with a physical address in the following table, as verify_adapter()
169 * will perform address conversion at run-time.
170 */
171 static video_adapter_t biosadapter = {
172 0, KD_VGA, VGA_DRIVER_NAME, 0, 0, V_ADP_COLOR, IO_VGA, 32,
173 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
174 0, 0, 0, M_VGA_C80x25, M_C80x25, M_VGA_C80x25
175 };
176
177 /* video driver declarations */
178 static int vga_configure(int flags);
179 int (*vga_sub_configure)(int flags);
180 static int vga_error(void);
181 static vi_probe_t vga_probe;
182 static vi_init_t vga_init;
183 static vi_get_info_t vga_get_info;
184 static vi_query_mode_t vga_query_mode;
185 static vi_set_mode_t vga_set_mode;
186 static vi_save_font_t vga_save_font;
187 static vi_load_font_t vga_load_font;
188 static vi_show_font_t vga_show_font;
189 static vi_save_palette_t vga_save_palette;
190 static vi_load_palette_t vga_load_palette;
191 static vi_set_border_t vga_set_border;
192 static vi_save_state_t vga_save_state;
193 static vi_load_state_t vga_load_state;
194 static vi_set_win_org_t vga_set_origin;
195 static vi_read_hw_cursor_t vga_read_hw_cursor;
196 static vi_set_hw_cursor_t vga_set_hw_cursor;
197 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
198 static vi_blank_display_t vga_blank_display;
199 static vi_mmap_t vga_mmap_buf;
200 static vi_ioctl_t vga_dev_ioctl;
201 #ifndef VGA_NO_MODE_CHANGE
202 static vi_clear_t vga_clear;
203 static vi_fill_rect_t vga_fill_rect;
204 static vi_bitblt_t vga_bitblt;
205 #else /* VGA_NO_MODE_CHANGE */
206 #define vga_clear (vi_clear_t *)vga_error
207 #define vga_fill_rect (vi_fill_rect_t *)vga_error
208 #define vga_bitblt (vi_bitblt_t *)vga_error
209 #endif
210 static vi_diag_t vga_diag;
211
212 static video_switch_t vgavidsw = {
213 vga_probe,
214 vga_init,
215 vga_get_info,
216 vga_query_mode,
217 vga_set_mode,
218 vga_save_font,
219 vga_load_font,
220 vga_show_font,
221 vga_save_palette,
222 vga_load_palette,
223 vga_set_border,
224 vga_save_state,
225 vga_load_state,
226 vga_set_origin,
227 vga_read_hw_cursor,
228 vga_set_hw_cursor,
229 vga_set_hw_cursor_shape,
230 vga_blank_display,
231 vga_mmap_buf,
232 vga_dev_ioctl,
233 vga_clear,
234 vga_fill_rect,
235 vga_bitblt,
236 vga_error,
237 vga_error,
238 vga_diag,
239 };
240
241 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
242
243 /* VGA BIOS standard video modes */
244 #define EOT (-1)
245 #define NA (-2)
246
247 static video_info_t bios_vmode[] = {
248 /* CGA */
249 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
250 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
251 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
252 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
253 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
254 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
255 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
256 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
257 /* EGA */
258 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
259 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
260 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
261 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
262 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
263 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
264 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
265 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
266 /* VGA */
267 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
268 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
269 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
270 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
271 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
272 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
273 /* MDA */
274 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
275 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
276 /* EGA */
277 { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1,
278 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
279 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
280 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
281 /* VGA */
282 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
283 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
284 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
285 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
286 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
287 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
288 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
289 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
290 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
291 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
292 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
293 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
294
295 #ifndef VGA_NO_MODE_CHANGE
296
297 #ifdef VGA_WIDTH90
298 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1,
299 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
300 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
301 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
302 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1,
303 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
304 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
305 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
306 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1,
307 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
308 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1,
309 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
310 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1,
311 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
312 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1,
313 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
314 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1,
315 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
316 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1,
317 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
318 #endif /* VGA_WIDTH90 */
319
320 /* CGA */
321 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
322 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
323 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
324 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
325 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
326 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
327 /* EGA */
328 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
329 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
330 V_INFO_MM_PLANAR },
331 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
332 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
333 V_INFO_MM_PLANAR },
334 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
335 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
336 V_INFO_MM_PLANAR },
337 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
338 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
339 V_INFO_MM_PLANAR },
340 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
341 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
342 V_INFO_MM_PLANAR },
343 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
344 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
345 V_INFO_MM_PLANAR },
346 /* VGA */
347 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
348 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
349 V_INFO_MM_PLANAR },
350 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
351 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
352 V_INFO_MM_PLANAR },
353 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
354 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
355 V_INFO_MM_PACKED, 1 },
356 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4,
357 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
358 V_INFO_MM_VGAX, 1 },
359 #endif /* VGA_NO_MODE_CHANGE */
360
361 { EOT },
362 };
363
364 static int vga_init_done = FALSE;
365 #ifndef VGA_NO_MODE_CHANGE
366 static u_char *video_mode_ptr = NULL;
367 #endif
368 static u_char *mode_map[V_MODE_MAP_SIZE];
369 static adp_state_t adpstate;
370 static adp_state_t adpstate2;
371 static int rows_offset = 1;
372
373 /* local macros and functions */
374 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
375
376 #ifndef VGA_NO_MODE_CHANGE
377 static void map_mode_table(u_char **, u_char *);
378 static int map_mode_num(int);
379 static int map_bios_mode_num(int);
380 #endif
381 static u_char *get_mode_param(int);
382 static int verify_adapter(video_adapter_t *);
383 static void update_adapter_info(video_adapter_t *, video_info_t *);
384 static int probe_adapters(void);
385 static int set_line_length(video_adapter_t *, int);
386 static int set_display_start(video_adapter_t *, int, int);
387
388 #ifndef VGA_NO_MODE_CHANGE
389 #ifdef VGA_WIDTH90
390 static void set_width90(adp_state_t *);
391 #endif
392 #endif /* !VGA_NO_MODE_CHANGE */
393
394 #ifndef VGA_NO_FONT_LOADING
395 #define PARAM_BUFSIZE 6
396 static void set_font_mode(video_adapter_t *, u_char *);
397 static void set_normal_mode(video_adapter_t *, u_char *);
398 #endif
399
400 #ifndef VGA_NO_MODE_CHANGE
401 static void filll_io(int, vm_offset_t, size_t);
402 static void planar_fill(video_adapter_t *, int);
403 static void packed_fill(video_adapter_t *, int);
404 static void direct_fill(video_adapter_t *, int);
405 #endif /* !VGA_NO_MODE_CHANGE */
406
407 #define ISMAPPED(pa, width) \
408 (((pa) <= (u_long)0x1000 - (width)) \
409 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
410
411 #define prologue(adp, flag, err) \
412 if (!vga_init_done || !((adp)->va_flags & (flag))) \
413 return (err)
414
415 /* a backdoor for the console driver */
416 static int
417 vga_configure(int flags)
418 {
419 probe_adapters();
420 if (probe_done(&biosadapter)) {
421 biosadapter.va_flags |= V_ADP_INITIALIZED;
422 if (!config_done(&biosadapter) && !(vid_register(&biosadapter) < 0))
423 biosadapter.va_flags |= V_ADP_REGISTERED;
424 }
425 if (vga_sub_configure != NULL)
426 (*vga_sub_configure)(flags);
427
428 return 1;
429 }
430
431 /* local subroutines */
432
433 #ifndef VGA_NO_MODE_CHANGE
434 /* construct the mode parameter map (accept 40x25, 80x25 and 80x30 modes) */
435 static void
436 map_mode_table(u_char *map[], u_char *table)
437 {
438 int i, valid;
439
440 for(i = 0; i < V_MODE_MAP_SIZE; ++i) {
441 map[i] = table + i*V_MODE_PARAM_SIZE;
442 valid = 0;
443 if ((map[i][0] == 40 && map[i][1] == 24) ||
444 (map[i][0] == 80 && (map[i][1] == 24 || map[i][1] == 29)))
445 valid++;
446 if (!valid)
447 map[i] = NULL;
448 }
449 }
450 #endif /* !VGA_NO_MODE_CHANGE */
451
452 #ifndef VGA_NO_MODE_CHANGE
453 /* map the non-standard video mode to a known mode number */
454 static int
455 map_mode_num(int mode)
456 {
457 static struct {
458 int from;
459 int to;
460 } mode_map[] = {
461 { M_ENH_B80x43, M_ENH_B80x25 },
462 { M_ENH_C80x43, M_ENH_C80x25 },
463 { M_VGA_M80x30, M_VGA_M80x25 },
464 { M_VGA_C80x30, M_VGA_C80x25 },
465 { M_VGA_M80x50, M_VGA_M80x25 },
466 { M_VGA_C80x50, M_VGA_C80x25 },
467 { M_VGA_M80x60, M_VGA_M80x25 },
468 { M_VGA_C80x60, M_VGA_C80x25 },
469 #ifdef VGA_WIDTH90
470 { M_VGA_M90x25, M_VGA_M80x25 },
471 { M_VGA_C90x25, M_VGA_C80x25 },
472 { M_VGA_M90x30, M_VGA_M80x25 },
473 { M_VGA_C90x30, M_VGA_C80x25 },
474 { M_VGA_M90x43, M_ENH_B80x25 },
475 { M_VGA_C90x43, M_ENH_C80x25 },
476 { M_VGA_M90x50, M_VGA_M80x25 },
477 { M_VGA_C90x50, M_VGA_C80x25 },
478 { M_VGA_M90x60, M_VGA_M80x25 },
479 { M_VGA_C90x60, M_VGA_C80x25 },
480 #endif
481 { M_VGA_MODEX, M_VGA_CG320 },
482 };
483 int i;
484
485 for (i = 0; i < NELEM(mode_map); ++i) {
486 if (mode_map[i].from == mode)
487 return mode_map[i].to;
488 }
489 return mode;
490 }
491
492 /* turn the BIOS video number into our video mode number */
493 static int
494 map_bios_mode_num(int bios_mode)
495 {
496 static int vga_modes[20] = {
497 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
498 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
499 M_BG320, M_CG320,
500 M_BG640,
501 M_VGA_M80x25, /* 7 */
502 8, 9, 10, 11, 12,
503 M_CG320_D,
504 M_CG640_E,
505 M_ENHMONOAPA2,
506 M_ENH_CG640,
507 M_BG640x480, M_CG640x480,
508 M_VGA_CG320,
509 };
510
511 if (bios_mode < NELEM(vga_modes))
512 return vga_modes[bios_mode];
513
514 return M_VGA_C80x25;
515 }
516 #endif /* !VGA_NO_MODE_CHANGE */
517
518 /* look up a parameter table entry */
519 static u_char *
520 get_mode_param(int mode)
521 {
522 #ifndef VGA_NO_MODE_CHANGE
523 if (mode >= V_MODE_MAP_SIZE)
524 mode = map_mode_num(mode);
525 #endif
526 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
527 return mode_map[mode];
528 else
529 return NULL;
530 }
531
532 static int
533 verify_adapter(video_adapter_t *adp)
534 {
535 vm_offset_t buf;
536 u_int16_t v;
537 #ifndef VGA_NO_MODE_CHANGE
538 u_int32_t p;
539 #endif
540
541 buf = BIOS_PADDRTOVADDR(adp->va_window);
542 v = readw(buf);
543 writew(buf, 0xA55A);
544 if (readw(buf) != 0xA55A)
545 return ENXIO;
546 writew(buf, v);
547
548 outb(CRTC, 7);
549 if (inb(CRTC) != 7)
550 return ENXIO;
551
552 adp->va_flags |= V_ADP_STATELOAD | V_ADP_STATESAVE | V_ADP_PALETTE |
553 V_ADP_BORDER;
554
555 #ifndef VGA_NO_MODE_CHANGE
556 /* get the BIOS video mode pointer */
557 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
558 p = BIOS_SADDRTOLADDR(p);
559 if (ISMAPPED(p, sizeof(u_int32_t))) {
560 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
561 p = BIOS_SADDRTOLADDR(p);
562 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
563 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
564 }
565 #endif
566
567 return 0;
568 }
569
570 static void
571 update_adapter_info(video_adapter_t *adp, video_info_t *info)
572 {
573 adp->va_flags |= V_ADP_COLOR;
574 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
575 adp->va_window_size = info->vi_window_size;
576 adp->va_window_gran = info->vi_window_gran;
577 adp->va_window_orig = 0;
578 /* XXX */
579 adp->va_buffer = info->vi_buffer;
580 adp->va_buffer_size = info->vi_buffer_size;
581 if (info->vi_mem_model == V_INFO_MM_VGAX) {
582 adp->va_line_width = info->vi_width/2;
583 } else if (info->vi_flags & V_INFO_GRAPHICS) {
584 switch (info->vi_depth/info->vi_planes) {
585 case 1:
586 adp->va_line_width = info->vi_width/8;
587 break;
588 case 2:
589 adp->va_line_width = info->vi_width/4;
590 break;
591 case 4:
592 adp->va_line_width = info->vi_width/2;
593 break;
594 case 8:
595 default: /* shouldn't happen */
596 adp->va_line_width = info->vi_width;
597 break;
598 }
599 } else {
600 adp->va_line_width = info->vi_width;
601 }
602 adp->va_disp_start.x = 0;
603 adp->va_disp_start.y = 0;
604 bcopy(info, &adp->va_info, sizeof(adp->va_info));
605 }
606
607 /* probe video adapters and return the number of detected adapters */
608 static int
609 probe_adapters(void)
610 {
611 video_adapter_t *adp;
612 video_info_t info;
613 #ifndef VGA_NO_MODE_CHANGE
614 u_char *mp;
615 #endif
616 int i;
617
618 /* do this test only once */
619 if (vga_init_done)
620 return 1;
621 vga_init_done = TRUE;
622
623 if (verify_adapter(&biosadapter) != 0)
624 return 0;
625
626 biosadapter.va_flags |= V_ADP_PROBED;
627 #ifndef VGA_NO_MODE_CHANGE
628 biosadapter.va_initial_bios_mode = readb(BIOS_PADDRTOVADDR(0x449));
629 biosadapter.va_mode = biosadapter.va_initial_mode =
630 map_bios_mode_num(biosadapter.va_initial_bios_mode);
631 #endif
632
633 /*
634 * Ensure a zero start address. The registers are w/o for old
635 * hardware so it's too hard to relocate the active screen
636 * memory.
637 * This must be done before vga_save_state() for VGA.
638 */
639 outb(CRTC, 12);
640 outb(CRTC + 1, 0);
641 outb(CRTC, 13);
642 outb(CRTC + 1, 0);
643
644 /* the video mode parameter table in VGA BIOS */
645 /* NOTE: there can be only one VGA recognized by the video BIOS.
646 */
647 adp = &biosadapter;
648 bzero(mode_map, sizeof(mode_map));
649 vga_save_state(adp, &adpstate, sizeof(adpstate));
650 for(i = 0; i < 16; i++)
651 adp->va_palette_regs[i] = adpstate.regs[35 + i];
652 #ifdef VGA_NO_MODE_CHANGE
653 mode_map[adp->va_initial_mode] = adpstate.regs;
654 rows_offset = 1;
655 #else /* !VGA_NO_MODE_CHANGE */
656 if (video_mode_ptr == NULL) {
657 mode_map[adp->va_initial_mode] = adpstate.regs;
658 rows_offset = 1;
659 } else {
660 /* discard modes that we are not familiar with */
661 map_mode_table(mode_map, video_mode_ptr);
662 mp = get_mode_param(adp->va_initial_mode);
663 #ifndef VGA_KEEP_POWERON_MODE
664 if (mp != NULL) {
665 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
666 rows_offset = adpstate.regs[1] + 1 - mp[1];
667 } else
668 #endif
669 {
670 mode_map[adp->va_initial_mode] = adpstate.regs;
671 rows_offset = 1;
672 }
673 }
674 #endif /* VGA_NO_MODE_CHANGE */
675
676 #ifndef VGA_NO_MODE_CHANGE
677 adp->va_flags |= V_ADP_MODECHANGE;
678 #endif
679 #ifndef VGA_NO_FONT_LOADING
680 adp->va_flags |= V_ADP_FONT;
681 #endif
682
683 /* XXX remove conflicting modes */
684 for (i = 0; i < M_VGA_CG320; i++) {
685 if (vga_get_info(&biosadapter, i, &info))
686 continue;
687 if ((info.vi_flags & V_INFO_COLOR) != V_ADP_COLOR)
688 mode_map[i] = NULL;
689 }
690
691 /* buffer address */
692 vga_get_info(&biosadapter, biosadapter.va_initial_mode, &info);
693 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
694 update_adapter_info(&biosadapter, &info);
695
696 /*
697 * XXX: we should verify the following values for the primary adapter...
698 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
699 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
700 * ? 0 : V_ADP_COLOR;
701 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
702 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
703 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
704 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
705 */
706
707 return 1;
708 }
709
710 /* set the scan line length in pixel */
711 static int
712 set_line_length(video_adapter_t *adp, int pixel)
713 {
714 u_char *mp;
715 int ppw; /* pixels per word */
716 int bpl; /* bytes per line */
717 int count;
718
719 mp = get_mode_param(adp->va_mode);
720 if (mp == NULL)
721 return EINVAL;
722
723 switch (adp->va_info.vi_mem_model) {
724 case V_INFO_MM_PLANAR:
725 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
726 count = (pixel + ppw - 1)/ppw/2;
727 bpl = ((pixel + ppw - 1)/ppw/2)*4;
728 break;
729 case V_INFO_MM_PACKED:
730 count = (pixel + 7)/8;
731 bpl = ((pixel + 7)/8)*8;
732 break;
733 case V_INFO_MM_TEXT:
734 count = (pixel + 7)/8; /* columns */
735 bpl = (pixel + 7)/8; /* columns */
736 break;
737 default:
738 return ENODEV;
739 }
740
741 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
742 count *= 2; /* byte mode */
743 outb(CRTC, 0x13);
744 outb(CRTC + 1, count);
745 adp->va_line_width = bpl;
746
747 return 0;
748 }
749
750 static int
751 set_display_start(video_adapter_t *adp, int x, int y)
752 {
753 int off; /* byte offset (graphics mode)/word offset (text mode) */
754 int poff; /* pixel offset */
755 int roff; /* row offset */
756 int ppb; /* pixels per byte */
757
758 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
759 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
760 off = y*adp->va_line_width + x/ppb;
761 roff = 0;
762 poff = x%ppb;
763 } else {
764 outb(TSIDX, 1);
765 if (inb(TSREG) & 1)
766 ppb = 9;
767 else
768 ppb = 8;
769 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
770 roff = y%adp->va_info.vi_cheight;
771 /* FIXME: is this correct? XXX */
772 if (ppb == 8)
773 poff = x%ppb;
774 else
775 poff = (x + 8)%ppb;
776 }
777
778 /* start address */
779 outb(CRTC, 0xc); /* high */
780 outb(CRTC + 1, off >> 8);
781 outb(CRTC, 0xd); /* low */
782 outb(CRTC + 1, off & 0xff);
783
784 /* horizontal pel pan */
785 inb(CRTC + 6);
786 outb(ATC, 0x13 | 0x20);
787 outb(ATC, poff);
788 inb(CRTC + 6);
789 outb(ATC, 0x20);
790
791 /* preset row scan */
792 outb(CRTC, 8);
793 outb(CRTC + 1, roff);
794
795 adp->va_disp_start.x = x;
796 adp->va_disp_start.y = y;
797 return 0;
798 }
799
800 #ifndef VGA_NO_MODE_CHANGE
801 #if defined(__x86_64__) /* XXX */
802 static void
803 fill(int val, void *d, size_t size)
804 {
805 u_char *p = d;
806
807 while (size-- > 0)
808 *p++ = val;
809 }
810 #endif /* __x86_64__ */
811
812 static void
813 filll_io(int val, vm_offset_t d, size_t size)
814 {
815 while (size-- > 0) {
816 writel(d, val);
817 d += sizeof(u_int32_t);
818 }
819 }
820 #endif /* !VGA_NO_MODE_CHANGE */
821
822 /* entry points */
823
824 static int
825 vga_error(void)
826 {
827 return ENODEV;
828 }
829
830 static int
831 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
832 {
833 probe_adapters();
834 if (unit != 0)
835 return ENXIO;
836
837 *adpp = &biosadapter;
838
839 return 0;
840 }
841
842 static int
843 vga_init(int unit, video_adapter_t *adp, int flags)
844 {
845 if ((unit != 0) || (adp == NULL) || !probe_done(adp))
846 return ENXIO;
847
848 if (!init_done(adp)) {
849 /* nothing to do really... */
850 adp->va_flags |= V_ADP_INITIALIZED;
851 }
852
853 if (!config_done(adp)) {
854 if (vid_register(adp) < 0)
855 return ENXIO;
856 adp->va_flags |= V_ADP_REGISTERED;
857 }
858 if (vga_sub_configure != NULL)
859 (*vga_sub_configure)(0);
860
861 return 0;
862 }
863
864 /*
865 * get_info():
866 * Return the video_info structure of the requested video mode.
867 */
868 static int
869 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
870 {
871 int i;
872
873 if (!vga_init_done)
874 return ENXIO;
875
876 #ifndef VGA_NO_MODE_CHANGE
877 if (adp->va_flags & V_ADP_MODECHANGE) {
878 /*
879 * If the parameter table entry for this mode is not found,
880 * the mode is not supported...
881 */
882 if (get_mode_param(mode) == NULL)
883 return EINVAL;
884 } else
885 #endif /* VGA_NO_MODE_CHANGE */
886 {
887 /*
888 * Even if we don't support video mode switching on this adapter,
889 * the information on the initial (thus current) video mode
890 * should be made available.
891 */
892 if (mode != adp->va_initial_mode)
893 return EINVAL;
894 }
895
896 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
897 if (bios_vmode[i].vi_mode == NA)
898 continue;
899 if (mode == bios_vmode[i].vi_mode) {
900 *info = bios_vmode[i];
901 /* XXX */
902 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
903 return 0;
904 }
905 }
906 return EINVAL;
907 }
908
909 /*
910 * query_mode():
911 * Find a video mode matching the requested parameters.
912 * Fields filled with 0 are considered "don't care" fields and
913 * match any modes.
914 */
915 static int
916 vga_query_mode(video_adapter_t *adp, video_info_t *info)
917 {
918 int i;
919
920 if (!vga_init_done)
921 return ENXIO;
922
923 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
924 if (bios_vmode[i].vi_mode == NA)
925 continue;
926
927 if ((info->vi_width != 0)
928 && (info->vi_width != bios_vmode[i].vi_width))
929 continue;
930 if ((info->vi_height != 0)
931 && (info->vi_height != bios_vmode[i].vi_height))
932 continue;
933 if ((info->vi_cwidth != 0)
934 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
935 continue;
936 if ((info->vi_cheight != 0)
937 && (info->vi_cheight != bios_vmode[i].vi_cheight))
938 continue;
939 if ((info->vi_depth != 0)
940 && (info->vi_depth != bios_vmode[i].vi_depth))
941 continue;
942 if ((info->vi_planes != 0)
943 && (info->vi_planes != bios_vmode[i].vi_planes))
944 continue;
945 /* XXX: should check pixel format, memory model */
946 if ((info->vi_flags != 0)
947 && (info->vi_flags != bios_vmode[i].vi_flags))
948 continue;
949
950 /* verify if this mode is supported on this adapter */
951 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
952 continue;
953 return 0;
954 }
955 return ENODEV;
956 }
957
958 /*
959 * set_mode():
960 * Change the video mode.
961 */
962
963 #ifndef VGA_NO_MODE_CHANGE
964 #ifdef VGA_WIDTH90
965 static void
966 set_width90(adp_state_t *params)
967 {
968 /*
969 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
970 * and alexv@sui.gda.itesm.mx.
971 */
972 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
973 params->regs[10+0x0] = 0x6b;
974 params->regs[10+0x1] = 0x59;
975 params->regs[10+0x2] = 0x5a;
976 params->regs[10+0x3] = 0x8e;
977 params->regs[10+0x4] = 0x5e;
978 params->regs[10+0x5] = 0x8a;
979 params->regs[10+0x13] = 45;
980 params->regs[35+0x13] = 0;
981 }
982 #endif /* VGA_WIDTH90 */
983 #endif /* !VGA_NO_MODE_CHANGE */
984
985 static int
986 vga_set_mode(video_adapter_t *adp, int mode)
987 {
988 #ifndef VGA_NO_MODE_CHANGE
989 video_info_t info;
990 adp_state_t params;
991
992 prologue(adp, V_ADP_MODECHANGE, ENODEV);
993
994 if (vga_get_info(adp, mode, &info))
995 return EINVAL;
996
997 lwkt_gettoken(&tty_token);
998
999 #if VGA_DEBUG > 1
1000 kprintf("vga_set_mode(): setting mode %d\n", mode);
1001 #endif
1002
1003 params.sig = V_STATE_SIG;
1004 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1005
1006 switch (mode) {
1007 #ifdef VGA_WIDTH90
1008 case M_VGA_C90x60: case M_VGA_M90x60:
1009 set_width90(&params);
1010 /* FALLTHROUGH */
1011 #endif
1012 case M_VGA_C80x60: case M_VGA_M80x60:
1013 params.regs[2] = 0x08;
1014 params.regs[19] = 0x47;
1015 goto special_480l;
1016
1017 #ifdef VGA_WIDTH90
1018 case M_VGA_C90x30: case M_VGA_M90x30:
1019 set_width90(&params);
1020 /* FALLTHROUGH */
1021 #endif
1022 case M_VGA_C80x30: case M_VGA_M80x30:
1023 params.regs[19] = 0x4f;
1024 special_480l:
1025 params.regs[9] |= 0xc0;
1026 params.regs[16] = 0x08;
1027 params.regs[17] = 0x3e;
1028 params.regs[26] = 0xea;
1029 params.regs[28] = 0xdf;
1030 params.regs[31] = 0xe7;
1031 params.regs[32] = 0x04;
1032 goto setup_mode;
1033
1034 #ifdef VGA_WIDTH90
1035 case M_VGA_C90x43: case M_VGA_M90x43:
1036 set_width90(&params);
1037 /* FALLTHROUGH */
1038 #endif
1039 case M_ENH_C80x43: case M_ENH_B80x43:
1040 params.regs[28] = 87;
1041 goto special_80x50;
1042
1043 #ifdef VGA_WIDTH90
1044 case M_VGA_C90x50: case M_VGA_M90x50:
1045 set_width90(&params);
1046 /* FALLTHROUGH */
1047 #endif
1048 case M_VGA_C80x50: case M_VGA_M80x50:
1049 special_80x50:
1050 params.regs[2] = 8;
1051 params.regs[19] = 7;
1052 goto setup_mode;
1053
1054 #ifdef VGA_WIDTH90
1055 case M_VGA_C90x25: case M_VGA_M90x25:
1056 set_width90(&params);
1057 /* FALLTHROUGH */
1058 #endif
1059 case M_VGA_C40x25: case M_VGA_C80x25:
1060 case M_VGA_M80x25:
1061 case M_B40x25: case M_C40x25:
1062 case M_B80x25: case M_C80x25:
1063 case M_ENH_B40x25: case M_ENH_C40x25:
1064 case M_ENH_B80x25: case M_ENH_C80x25:
1065 case M_EGAMONO80x25:
1066
1067 setup_mode:
1068 vga_load_state(adp, &params);
1069 break;
1070
1071 case M_VGA_MODEX:
1072 /* "unchain" the VGA mode */
1073 params.regs[5-1+0x04] &= 0xf7;
1074 params.regs[5-1+0x04] |= 0x04;
1075 /* turn off doubleword mode */
1076 params.regs[10+0x14] &= 0xbf;
1077 /* turn off word addressing */
1078 params.regs[10+0x17] |= 0x40;
1079 /* set logical screen width */
1080 params.regs[10+0x13] = 80;
1081 /* set 240 lines */
1082 params.regs[10+0x11] = 0x2c;
1083 params.regs[10+0x06] = 0x0d;
1084 params.regs[10+0x07] = 0x3e;
1085 params.regs[10+0x10] = 0xea;
1086 params.regs[10+0x11] = 0xac;
1087 params.regs[10+0x12] = 0xdf;
1088 params.regs[10+0x15] = 0xe7;
1089 params.regs[10+0x16] = 0x06;
1090 /* set vertical sync polarity to reflect aspect ratio */
1091 params.regs[9] = 0xe3;
1092 goto setup_grmode;
1093
1094 case M_BG320: case M_CG320: case M_BG640:
1095 case M_CG320_D: case M_CG640_E:
1096 case M_CG640x350: case M_ENH_CG640:
1097 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1098
1099 setup_grmode:
1100 vga_load_state(adp, &params);
1101 break;
1102
1103 default:
1104 lwkt_reltoken(&tty_token);
1105 return EINVAL;
1106 }
1107
1108 adp->va_mode = mode;
1109 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1110 update_adapter_info(adp, &info);
1111
1112 /* move hardware cursor out of the way */
1113 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
1114
1115 lwkt_reltoken(&tty_token);
1116 return 0;
1117 #else /* VGA_NO_MODE_CHANGE */
1118 lwkt_reltoken(&tty_token);
1119 return ENODEV;
1120 #endif /* VGA_NO_MODE_CHANGE */
1121 }
1122
1123 #ifndef VGA_NO_FONT_LOADING
1124
1125 static void
1126 set_font_mode(video_adapter_t *adp, u_char *buf)
1127 {
1128 crit_enter();
1129
1130 /* save register values */
1131 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1132 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1133 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1134 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1135 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1136 inb(CRTC + 6);
1137 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1138
1139 /* setup vga for loading fonts */
1140 inb(CRTC + 6); /* reset flip-flop */
1141 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1142 inb(CRTC + 6); /* reset flip-flop */
1143 outb(ATC, 0x20); /* enable palette */
1144 outw(TSIDX, 0x0402);
1145 outw(TSIDX, 0x0704);
1146 outw(GDCIDX, 0x0204);
1147 outw(GDCIDX, 0x0005);
1148 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1149
1150 crit_exit();
1151 }
1152
1153 static void
1154 set_normal_mode(video_adapter_t *adp, u_char *buf)
1155 {
1156 crit_enter();
1157
1158 /* setup vga for normal operation mode again */
1159 inb(CRTC + 6); /* reset flip-flop */
1160 outb(ATC, 0x10); outb(ATC, buf[5]);
1161 inb(CRTC + 6); /* reset flip-flop */
1162 outb(ATC, 0x20); /* enable palette */
1163 outw(TSIDX, 0x0002 | (buf[0] << 8));
1164 outw(TSIDX, 0x0004 | (buf[1] << 8));
1165 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1166 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1167 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1168
1169 crit_exit();
1170 }
1171
1172 #endif /* VGA_NO_FONT_LOADING */
1173
1174 /*
1175 * save_font():
1176 * Read the font data in the requested font page from the video adapter.
1177 */
1178 static int
1179 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1180 int ch, int count)
1181 {
1182 #ifndef VGA_NO_FONT_LOADING
1183 u_char buf[PARAM_BUFSIZE];
1184 vm_offset_t segment;
1185 int c;
1186
1187 prologue(adp, V_ADP_FONT, ENODEV);
1188
1189 if (fontsize < 14) {
1190 /* FONT_8 */
1191 fontsize = 8;
1192 } else if (fontsize >= 32) {
1193 fontsize = 32;
1194 } else if (fontsize >= 16) {
1195 /* FONT_16 */
1196 fontsize = 16;
1197 } else {
1198 /* FONT_14 */
1199 fontsize = 14;
1200 }
1201
1202 if (page < 0 || page >= 8)
1203 return EINVAL;
1204 segment = FONT_BUF + 0x4000*page;
1205 if (page > 3)
1206 segment -= 0xe000;
1207
1208 set_font_mode(adp, buf);
1209 if (fontsize == 32) {
1210 bcopy_fromio((uintptr_t)segment + ch*32, data, fontsize*count);
1211 } else {
1212 for (c = ch; count > 0; ++c, --count) {
1213 bcopy_fromio((uintptr_t)segment + c*32, data, fontsize);
1214 data += fontsize;
1215 }
1216 }
1217 set_normal_mode(adp, buf);
1218
1219 return 0;
1220 #else /* VGA_NO_FONT_LOADING */
1221 return ENODEV;
1222 #endif /* VGA_NO_FONT_LOADING */
1223 }
1224
1225 /*
1226 * load_font():
1227 * Set the font data in the requested font page.
1228 * NOTE: it appears that some recent video adapters do not support
1229 * the font page other than 0... XXX
1230 */
1231 static int
1232 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1233 int ch, int count)
1234 {
1235 #ifndef VGA_NO_FONT_LOADING
1236 u_char buf[PARAM_BUFSIZE];
1237 vm_offset_t segment;
1238 int c;
1239
1240 prologue(adp, V_ADP_FONT, ENODEV);
1241
1242 if (fontsize < 14) {
1243 /* FONT_8 */
1244 fontsize = 8;
1245 } else if (fontsize >= 32) {
1246 fontsize = 32;
1247 } else if (fontsize >= 16) {
1248 /* FONT_16 */
1249 fontsize = 16;
1250 } else {
1251 /* FONT_14 */
1252 fontsize = 14;
1253 }
1254
1255 if (page < 0 || page >= 8)
1256 return EINVAL;
1257 segment = FONT_BUF + 0x4000*page;
1258 if (page > 3)
1259 segment -= 0xe000;
1260
1261 set_font_mode(adp, buf);
1262 if (fontsize == 32) {
1263 bcopy_toio(data, (uintptr_t)segment + ch*32, fontsize*count);
1264 } else {
1265 for (c = ch; count > 0; ++c, --count) {
1266 bcopy_toio(data, (uintptr_t)segment + c*32, fontsize);
1267 data += fontsize;
1268 }
1269 }
1270 set_normal_mode(adp, buf);
1271
1272 return 0;
1273 #else /* VGA_NO_FONT_LOADING */
1274 return ENODEV;
1275 #endif /* VGA_NO_FONT_LOADING */
1276 }
1277
1278 /*
1279 * show_font():
1280 * Activate the requested font page.
1281 * NOTE: it appears that some recent video adapters do not support
1282 * the font page other than 0... XXX
1283 */
1284 static int
1285 vga_show_font(video_adapter_t *adp, int page)
1286 {
1287 #ifndef VGA_NO_FONT_LOADING
1288 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1289
1290 prologue(adp, V_ADP_FONT, ENODEV);
1291 if (page < 0 || page >= 8)
1292 return EINVAL;
1293
1294 crit_enter();
1295 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1296 crit_exit();
1297
1298 return 0;
1299 #else /* VGA_NO_FONT_LOADING */
1300 return ENODEV;
1301 #endif /* VGA_NO_FONT_LOADING */
1302 }
1303
1304 /*
1305 * save_palette():
1306 * Read DAC values. The values have expressed in 8 bits.
1307 *
1308 * VGA
1309 */
1310 static int
1311 vga_save_palette(video_adapter_t *adp, u_char *palette)
1312 {
1313 int i;
1314
1315 prologue(adp, V_ADP_PALETTE, ENODEV);
1316
1317 /*
1318 * We store 8 bit values in the palette buffer, while the standard
1319 * VGA has 6 bit DAC .
1320 */
1321 outb(PALRADR, 0x00);
1322 for (i = 0; i < 256*3; ++i)
1323 palette[i] = inb(PALDATA) << 2;
1324 inb(CRTC + 6); /* reset flip/flop */
1325 return 0;
1326 }
1327
1328 static int
1329 vga_save_palette2(video_adapter_t *adp, int base, int count,
1330 u_char *r, u_char *g, u_char *b)
1331 {
1332 int i;
1333
1334 prologue(adp, V_ADP_PALETTE, ENODEV);
1335
1336 outb(PALRADR, base);
1337 for (i = 0; i < count; ++i) {
1338 r[i] = inb(PALDATA) << 2;
1339 g[i] = inb(PALDATA) << 2;
1340 b[i] = inb(PALDATA) << 2;
1341 }
1342 inb(CRTC + 6); /* reset flip/flop */
1343 return 0;
1344 }
1345
1346 /*
1347 * load_palette():
1348 * Set DAC values.
1349 *
1350 * VGA
1351 */
1352 static int
1353 vga_load_palette(video_adapter_t *adp, const u_char *palette)
1354 {
1355 int i;
1356
1357 prologue(adp, V_ADP_PALETTE, ENODEV);
1358
1359 outb(PIXMASK, 0xff); /* no pixelmask */
1360 outb(PALWADR, 0x00);
1361 for (i = 0; i < 256*3; ++i)
1362 outb(PALDATA, palette[i] >> 2);
1363 inb(CRTC + 6); /* reset flip/flop */
1364 outb(ATC, 0x20); /* enable palette */
1365 return 0;
1366 }
1367
1368 static int
1369 vga_load_palette2(video_adapter_t *adp, int base, int count,
1370 u_char *r, u_char *g, u_char *b)
1371 {
1372 int i;
1373
1374 prologue(adp, V_ADP_PALETTE, ENODEV);
1375
1376 outb(PIXMASK, 0xff); /* no pixelmask */
1377 outb(PALWADR, base);
1378 for (i = 0; i < count; ++i) {
1379 outb(PALDATA, r[i] >> 2);
1380 outb(PALDATA, g[i] >> 2);
1381 outb(PALDATA, b[i] >> 2);
1382 }
1383 inb(CRTC + 6); /* reset flip/flop */
1384 outb(ATC, 0x20); /* enable palette */
1385 return 0;
1386 }
1387
1388 /*
1389 * set_border():
1390 * Change the border color.
1391 */
1392 static int
1393 vga_set_border(video_adapter_t *adp, int color)
1394 {
1395 prologue(adp, V_ADP_BORDER, ENODEV);
1396
1397 inb(CRTC + 6); /* reset flip-flop */
1398 outb(ATC, 0x31); outb(ATC, color & 0xff);
1399
1400 return 0;
1401 }
1402
1403 /*
1404 * save_state():
1405 * Read video register values.
1406 * NOTE: this function only reads the standard VGA registers.
1407 * any extra/extended registers of SVGA adapters are not saved.
1408 */
1409 static int
1410 vga_save_state(video_adapter_t *adp, void *p, size_t size)
1411 {
1412 video_info_t info;
1413 u_char *buf;
1414 int i, j;
1415
1416 if (size == 0) {
1417 /* return the required buffer size */
1418 prologue(adp, V_ADP_STATESAVE, 0);
1419 return sizeof(adp_state_t);
1420 } else {
1421 prologue(adp, V_ADP_STATESAVE, ENODEV);
1422 if (size < sizeof(adp_state_t))
1423 return EINVAL;
1424 }
1425 ((adp_state_t *)p)->sig = V_STATE_SIG;
1426 buf = ((adp_state_t *)p)->regs;
1427 bzero(buf, V_MODE_PARAM_SIZE);
1428
1429 crit_enter();
1430
1431 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
1432 for (i = 0, j = 5; i < 4; i++) {
1433 outb(TSIDX, i + 1);
1434 buf[j++] = inb(TSREG);
1435 }
1436 buf[9] = inb(MISC + 10); /* dot-clock */
1437 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
1438
1439 for (i = 0, j = 10; i < 25; i++) { /* crtc */
1440 outb(CRTC, i);
1441 buf[j++] = inb(CRTC + 1);
1442 }
1443 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
1444 inb(CRTC + 6); /* reset flip-flop */
1445 outb(ATC, i);
1446 buf[j++] = inb(ATC + 1);
1447 }
1448 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
1449 outb(GDCIDX, i);
1450 buf[j++] = inb(GDCREG);
1451 }
1452 inb(CRTC + 6); /* reset flip-flop */
1453 outb(ATC, 0x20); /* enable palette */
1454
1455 crit_exit();
1456
1457 #if 1
1458 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
1459 if (info.vi_flags & V_INFO_GRAPHICS) {
1460 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
1461 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
1462 } else {
1463 buf[0] = info.vi_width; /* COLS */
1464 buf[1] = info.vi_height - 1; /* ROWS */
1465 }
1466 buf[2] = info.vi_cheight; /* POINTS */
1467 } else {
1468 /* XXX: shouldn't be happening... */
1469 kprintf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
1470 adp->va_unit, adp->va_name);
1471 }
1472 #else
1473 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
1474 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
1475 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
1476 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
1477 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
1478 #endif
1479
1480 return 0;
1481 }
1482
1483 /*
1484 * load_state():
1485 * Set video registers at once.
1486 * NOTE: this function only updates the standard VGA registers.
1487 * any extra/extended registers of SVGA adapters are not changed.
1488 */
1489 static int
1490 vga_load_state(video_adapter_t *adp, void *p)
1491 {
1492 u_char *buf;
1493 int i;
1494
1495 prologue(adp, V_ADP_STATELOAD, ENODEV);
1496 if (((adp_state_t *)p)->sig != V_STATE_SIG)
1497 return EINVAL;
1498
1499 buf = ((adp_state_t *)p)->regs;
1500
1501 #if VGA_DEBUG > 1
1502 hexdump(buf, V_MODE_PARAM_SIZE, NULL, HD_OMIT_CHARS | HD_OMIT_COUNT);
1503 #endif
1504
1505 crit_enter();
1506
1507 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
1508 for (i = 0; i < 4; ++i) { /* program sequencer */
1509 outb(TSIDX, i + 1);
1510 outb(TSREG, buf[i + 5]);
1511 }
1512 outb(MISC, buf[9]); /* set dot-clock */
1513 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
1514 outb(CRTC, 0x11);
1515 outb(CRTC + 1, inb(CRTC + 1) & 0x7F);
1516 for (i = 0; i < 25; ++i) { /* program crtc */
1517 outb(CRTC, i);
1518 outb(CRTC + 1, buf[i + 10]);
1519 }
1520 inb(CRTC + 6); /* reset flip-flop */
1521 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
1522 outb(ATC, i);
1523 outb(ATC, buf[i + 35]);
1524 }
1525 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
1526 outb(GDCIDX, i);
1527 outb(GDCREG, buf[i + 55]);
1528 }
1529 inb(CRTC + 6); /* reset flip-flop */
1530 outb(ATC, 0x20); /* enable palette */
1531
1532 #if 0 /* XXX a temporary workaround for kernel panic */
1533 #ifndef VGA_NO_MODE_CHANGE
1534 if (adp->va_unit == V_ADP_PRIMARY) {
1535 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
1536 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
1537 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
1538 #if 0
1539 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
1540 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
1541 #endif
1542 }
1543 #endif /* !VGA_NO_MODE_CHANGE */
1544 #endif /* XXX */
1545
1546 crit_exit();
1547 return 0;
1548 }
1549
1550 /*
1551 * set_origin():
1552 * Change the origin (window mapping) of the banked frame buffer.
1553 */
1554 static int
1555 vga_set_origin(video_adapter_t *adp, off_t offset)
1556 {
1557 /*
1558 * The standard video modes do not require window mapping;
1559 * always return error.
1560 */
1561 return ENODEV;
1562 }
1563
1564 /*
1565 * read_hw_cursor():
1566 * Read the position of the hardware text cursor.
1567 */
1568 static int
1569 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1570 {
1571 u_int16_t off;
1572
1573 if (!vga_init_done)
1574 return ENXIO;
1575
1576 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
1577 return ENODEV;
1578
1579 crit_enter();
1580 outb(CRTC, 14);
1581 off = inb(CRTC + 1);
1582 outb(CRTC, 15);
1583 off = (off << 8) | inb(CRTC + 1);
1584 crit_exit();
1585
1586 *row = off / adp->va_info.vi_width;
1587 *col = off % adp->va_info.vi_width;
1588
1589 return 0;
1590 }
1591
1592 /*
1593 * set_hw_cursor():
1594 * Move the hardware text cursor. If col and row are both -1,
1595 * the cursor won't be shown.
1596 */
1597 static int
1598 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
1599 {
1600 u_int16_t off;
1601
1602 if (!vga_init_done)
1603 return ENXIO;
1604
1605 if ((col == -1) && (row == -1)) {
1606 off = -1;
1607 } else {
1608 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
1609 return ENODEV;
1610 off = row*adp->va_info.vi_width + col;
1611 }
1612
1613 crit_enter();
1614 outb(CRTC, 14);
1615 outb(CRTC + 1, off >> 8);
1616 outb(CRTC, 15);
1617 outb(CRTC + 1, off & 0x00ff);
1618 crit_exit();
1619
1620 return 0;
1621 }
1622
1623 /*
1624 * set_hw_cursor_shape():
1625 * Change the shape of the hardware text cursor. If the height is
1626 * zero or negative, the cursor won't be shown.
1627 */
1628 static int
1629 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1630 int celsize, int blink)
1631 {
1632 if (!vga_init_done)
1633 return ENXIO;
1634
1635 crit_enter();
1636 if (height <= 0) {
1637 /* make the cursor invisible */
1638 outb(CRTC, 10);
1639 outb(CRTC + 1, 32);
1640 outb(CRTC, 11);
1641 outb(CRTC + 1, 0);
1642 } else {
1643 outb(CRTC, 10);
1644 outb(CRTC + 1, celsize - base - height);
1645 outb(CRTC, 11);
1646 outb(CRTC + 1, celsize - base - 1);
1647 }
1648 crit_exit();
1649
1650 return 0;
1651 }
1652
1653 /*
1654 * blank_display()
1655 * Put the display in power save/power off mode.
1656 */
1657 static int
1658 vga_blank_display(video_adapter_t *adp, int mode)
1659 {
1660 u_char val;
1661
1662 crit_enter();
1663 switch (mode) {
1664 case V_DISPLAY_SUSPEND:
1665 case V_DISPLAY_STAND_BY:
1666 outb(TSIDX, 0x01);
1667 val = inb(TSREG);
1668 outb(TSIDX, 0x01);
1669 outb(TSREG, val | 0x20);
1670 outb(CRTC, 0x17);
1671 val = inb(CRTC + 1);
1672 outb(CRTC + 1, val & ~0x80);
1673 break;
1674 case V_DISPLAY_OFF:
1675 outb(TSIDX, 0x01);
1676 val = inb(TSREG);
1677 outb(TSIDX, 0x01);
1678 outb(TSREG, val | 0x20);
1679 break;
1680 case V_DISPLAY_ON:
1681 outb(TSIDX, 0x01);
1682 val = inb(TSREG);
1683 outb(TSIDX, 0x01);
1684 outb(TSREG, val & 0xDF);
1685 outb(CRTC, 0x17);
1686 val = inb(CRTC + 1);
1687 outb(CRTC + 1, val | 0x80);
1688 break;
1689 }
1690 crit_exit();
1691
1692 return 0;
1693 }
1694
1695 /*
1696 * mmap():
1697 * Mmap frame buffer.
1698 */
1699 static int
1700 vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
1701 {
1702 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1703 return -1;
1704
1705 #if VGA_DEBUG > 0
1706 kprintf("vga_mmap_buf(): window:0x%x, offset:%p\n",
1707 adp->va_info.vi_window, (void *)offset);
1708 #endif
1709
1710 /* XXX: is this correct? */
1711 if (offset > adp->va_window_size - PAGE_SIZE)
1712 return -1;
1713
1714 #if defined(__x86_64__)
1715 return x86_64_btop(adp->va_info.vi_window + offset);
1716 #else
1717 #error "vga_mmap_buf needs to return something"
1718 #endif
1719 }
1720
1721 #ifndef VGA_NO_MODE_CHANGE
1722
1723 static void
1724 planar_fill(video_adapter_t *adp, int val)
1725 {
1726 int length;
1727 int at; /* position in the frame buffer */
1728 int l;
1729
1730 lwkt_gettoken(&tty_token);
1731 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
1732 outw(GDCIDX, 0x0003); /* data rotate/function select */
1733 outw(GDCIDX, 0x0f01); /* set/reset enable */
1734 outw(GDCIDX, 0xff08); /* bit mask */
1735 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
1736 at = 0;
1737 length = adp->va_line_width*adp->va_info.vi_height;
1738 while (length > 0) {
1739 l = imin(length, adp->va_window_size);
1740 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1741 bzero_io(adp->va_window, l);
1742 length -= l;
1743 at += l;
1744 }
1745 outw(GDCIDX, 0x0000); /* set/reset */
1746 outw(GDCIDX, 0x0001); /* set/reset enable */
1747 lwkt_reltoken(&tty_token);
1748 }
1749
1750 static void
1751 packed_fill(video_adapter_t *adp, int val)
1752 {
1753 int length;
1754 int at; /* position in the frame buffer */
1755 int l;
1756
1757 lwkt_gettoken(&tty_token);
1758 at = 0;
1759 length = adp->va_line_width*adp->va_info.vi_height;
1760 while (length > 0) {
1761 l = imin(length, adp->va_window_size);
1762 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1763 fill_io(val, adp->va_window, l);
1764 length -= l;
1765 at += l;
1766 }
1767 lwkt_reltoken(&tty_token);
1768 }
1769
1770 static void
1771 direct_fill(video_adapter_t *adp, int val)
1772 {
1773 int length;
1774 int at; /* position in the frame buffer */
1775 int l;
1776
1777 lwkt_gettoken(&tty_token);
1778 at = 0;
1779 length = adp->va_line_width*adp->va_info.vi_height;
1780 while (length > 0) {
1781 l = imin(length, adp->va_window_size);
1782 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1783 switch (adp->va_info.vi_pixel_size) {
1784 case sizeof(u_int16_t):
1785 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
1786 break;
1787 case 3:
1788 /* FIXME */
1789 break;
1790 case sizeof(u_int32_t):
1791 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
1792 break;
1793 }
1794 length -= l;
1795 at += l;
1796 }
1797 lwkt_reltoken(&tty_token);
1798 }
1799
1800 static int
1801 vga_clear(video_adapter_t *adp)
1802 {
1803 switch (adp->va_info.vi_mem_model) {
1804 case V_INFO_MM_TEXT:
1805 /* do nothing? XXX */
1806 break;
1807 case V_INFO_MM_PLANAR:
1808 planar_fill(adp, 0);
1809 break;
1810 case V_INFO_MM_PACKED:
1811 packed_fill(adp, 0);
1812 break;
1813 case V_INFO_MM_DIRECT:
1814 direct_fill(adp, 0);
1815 break;
1816 }
1817 return 0;
1818 }
1819
1820 static int
1821 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1822 {
1823 return ENODEV;
1824 }
1825
1826 static int
1827 vga_bitblt(video_adapter_t *adp,...)
1828 {
1829 /* FIXME */
1830 return ENODEV;
1831 }
1832
1833 #endif /* !VGA_NO_MODE_CHANGE */
1834
1835 static int
1836 get_palette(video_adapter_t *adp, int base, int count,
1837 u_char *red, u_char *green, u_char *blue, u_char *trans)
1838 {
1839 u_char *r;
1840 u_char *g;
1841 u_char *b;
1842
1843 if (count < 0 || base < 0 || count > 256 || base > 256 ||
1844 base + count > 256)
1845 return EINVAL;
1846
1847 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1848 g = r + count;
1849 b = g + count;
1850 if (vga_save_palette2(adp, base, count, r, g, b)) {
1851 kfree(r, M_DEVBUF);
1852 return ENODEV;
1853 }
1854 copyout(r, red, count);
1855 copyout(g, green, count);
1856 copyout(b, blue, count);
1857 if (trans != NULL) {
1858 bzero(r, count);
1859 copyout(r, trans, count);
1860 }
1861 kfree(r, M_DEVBUF);
1862
1863 return 0;
1864 }
1865
1866 static int
1867 set_palette(video_adapter_t *adp, int base, int count,
1868 u_char *red, u_char *green, u_char *blue, u_char *trans)
1869 {
1870 u_char *r;
1871 u_char *g;
1872 u_char *b;
1873 int err;
1874
1875 if (count < 0 || base < 0 || count > 256 || base > 256 ||
1876 base + count > 256)
1877 return EINVAL;
1878
1879 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1880 g = r + count;
1881 b = g + count;
1882 err = copyin(red, r, count);
1883 if (!err)
1884 err = copyin(green, g, count);
1885 if (!err)
1886 err = copyin(blue, b, count);
1887 if (!err)
1888 err = vga_load_palette2(adp, base, count, r, g, b);
1889 kfree(r, M_DEVBUF);
1890
1891 return (err ? ENODEV : 0);
1892 }
1893
1894 static int
1895 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1896 {
1897 switch (cmd) {
1898 case FBIO_GETWINORG: /* get frame buffer window origin */
1899 *(u_int *)arg = 0;
1900 return 0;
1901
1902 case FBIO_SETWINORG: /* set frame buffer window origin */
1903 return ENODEV;
1904
1905 case FBIO_SETDISPSTART: /* set display start address */
1906 return (set_display_start(adp,
1907 ((video_display_start_t *)arg)->x,
1908 ((video_display_start_t *)arg)->y)
1909 ? ENODEV : 0);
1910
1911 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
1912 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
1913
1914 case FBIO_GETPALETTE: /* get color palette */
1915 return get_palette(adp, ((video_color_palette_t *)arg)->index,
1916 ((video_color_palette_t *)arg)->count,
1917 ((video_color_palette_t *)arg)->red,
1918 ((video_color_palette_t *)arg)->green,
1919 ((video_color_palette_t *)arg)->blue,
1920 ((video_color_palette_t *)arg)->transparent);
1921
1922 case FBIO_SETPALETTE: /* set color palette */
1923 return set_palette(adp, ((video_color_palette_t *)arg)->index,
1924 ((video_color_palette_t *)arg)->count,
1925 ((video_color_palette_t *)arg)->red,
1926 ((video_color_palette_t *)arg)->green,
1927 ((video_color_palette_t *)arg)->blue,
1928 ((video_color_palette_t *)arg)->transparent);
1929
1930 case FBIOGTYPE: /* get frame buffer type info. */
1931 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
1932 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
1933 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
1934 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
1935 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
1936 ((struct fbtype *)arg)->fb_cmsize = 0;
1937 else
1938 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
1939 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
1940 return 0;
1941
1942 case FBIOGETCMAP: /* get color palette */
1943 return get_palette(adp, ((struct fbcmap *)arg)->index,
1944 ((struct fbcmap *)arg)->count,
1945 ((struct fbcmap *)arg)->red,
1946 ((struct fbcmap *)arg)->green,
1947 ((struct fbcmap *)arg)->blue, NULL);
1948
1949 case FBIOPUTCMAP: /* set color palette */
1950 return set_palette(adp, ((struct fbcmap *)arg)->index,
1951 ((struct fbcmap *)arg)->count,
1952 ((struct fbcmap *)arg)->red,
1953 ((struct fbcmap *)arg)->green,
1954 ((struct fbcmap *)arg)->blue, NULL);
1955
1956 default:
1957 return fb_commonioctl(adp, cmd, arg);
1958 }
1959 }
1960
1961 /*
1962 * diag():
1963 * Print some information about the video adapter and video modes,
1964 * with requested level of details.
1965 */
1966 static int
1967 vga_diag(video_adapter_t *adp, int level)
1968 {
1969 u_char *mp;
1970 #if FB_DEBUG > 1
1971 video_info_t info;
1972 int i;
1973 #endif
1974
1975 if (!vga_init_done)
1976 return ENXIO;
1977
1978 #if FB_DEBUG > 1
1979 #ifndef VGA_NO_MODE_CHANGE
1980 kprintf("vga: DCC code:0x%02x\n",
1981 readb(BIOS_PADDRTOVADDR(0x488)));
1982 kprintf("vga: CRTC:0x%x, video option:0x%02x, ",
1983 readw(BIOS_PADDRTOVADDR(0x463)),
1984 readb(BIOS_PADDRTOVADDR(0x487)));
1985 kprintf("rows:%d, cols:%d, font height:%d\n",
1986 readb(BIOS_PADDRTOVADDR(0x44a)),
1987 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
1988 readb(BIOS_PADDRTOVADDR(0x485)));
1989 kprintf("vga: param table:%p\n", video_mode_ptr);
1990 kprintf("vga: rows_offset:%d\n", rows_offset);
1991 #endif
1992 #endif /* FB_DEBUG > 1 */
1993
1994 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
1995
1996 #if FB_DEBUG > 1
1997 if (adp->va_flags & V_ADP_MODECHANGE) {
1998 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1999 if (bios_vmode[i].vi_mode == NA)
2000 continue;
2001 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
2002 continue;
2003 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
2004 }
2005 } else {
2006 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
2007 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
2008 }
2009 #endif /* FB_DEBUG > 1 */
2010
2011 #ifndef VGA_NO_MODE_CHANGE
2012 if (video_mode_ptr == NULL)
2013 kprintf("vga%d: %s: WARNING: video mode switching is not "
2014 "fully supported on this adapter\n",
2015 adp->va_unit, adp->va_name);
2016 #endif
2017 if (level <= 0)
2018 return 0;
2019
2020 kprintf("VGA parameters upon power-up\n");
2021 hexdump(adpstate.regs, sizeof(adpstate.regs), NULL,
2022 HD_OMIT_CHARS | HD_OMIT_COUNT);
2023
2024 mp = get_mode_param(adp->va_initial_mode);
2025 if (mp == NULL) /* this shouldn't be happening */
2026 return 0;
2027 kprintf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
2028 hexdump(adpstate2.regs, sizeof(adpstate2.regs), NULL,
2029 HD_OMIT_CHARS | HD_OMIT_COUNT);
2030 kprintf("VGA parameters to be used for mode %d\n", adp->va_initial_mode);
2031 hexdump(mp, V_MODE_PARAM_SIZE, NULL, HD_OMIT_CHARS | HD_OMIT_COUNT);
2032
2033 return 0;
2034 }
DragonFly BSD