FreeBSD/Linux Kernel Cross Reference
sys/dev/video/fb/vga.c
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 __i386__
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 /* machine/pc/bios.h has got too much i386-specific stuff in it */
66 #ifndef BIOS_PADDRTOVADDR
67 #define BIOS_PADDRTOVADDR(x) (((x) - ISA_HOLE_START) + atdevbase)
68 #endif
69 int
70 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
71 {
72 video_adapter_t *adp;
73 video_switch_t *sw;
74 int error;
75
76 sw = vid_get_switch(VGA_DRIVER_NAME);
77 if (sw == NULL)
78 return 0;
79 error = (*sw->probe)(unit, &adp, NULL, flags);
80 if (error)
81 return error;
82 bcopy(adp, buf, sizeof(*buf));
83 return 0;
84 }
85
86 int
87 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
88 {
89 video_switch_t *sw;
90 int error;
91
92 sw = vid_get_switch(VGA_DRIVER_NAME);
93 if (sw == NULL)
94 return ENXIO;
95
96 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
97 if (error)
98 return error;
99 return (*sw->init)(unit, sc->adp, flags);
100 }
101
102 /* cdev driver functions */
103
104 #ifdef FB_INSTALL_CDEV
105
106 struct ucred;
107
108 int
109 vga_open(cdev_t dev, vga_softc_t *sc, int flag, int mode, struct ucred *cred)
110 {
111 if (sc == NULL)
112 return ENXIO;
113 if (mode & (O_CREAT | O_APPEND | O_TRUNC))
114 return ENODEV;
115
116 return genfbopen(&sc->gensc, sc->adp, flag, mode, cred);
117 }
118
119 int
120 vga_close(cdev_t dev, vga_softc_t *sc, int flag, int mode)
121 {
122 return genfbclose(&sc->gensc, sc->adp, flag, mode);
123 }
124
125 int
126 vga_read(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
127 {
128 return genfbread(&sc->gensc, sc->adp, uio, flag);
129 }
130
131 int
132 vga_write(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
133 {
134 return genfbread(&sc->gensc, sc->adp, uio, flag);
135 }
136
137 int
138 vga_ioctl(cdev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
139 struct ucred *cred)
140 {
141 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, cred);
142 }
143
144 int
145 vga_mmap(cdev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
146 {
147 return genfbmmap(&sc->gensc, sc->adp, offset, prot);
148 }
149
150 #endif /* FB_INSTALL_CDEV */
151
152 /* LOW-LEVEL */
153
154 #define probe_done(adp) ((adp)->va_flags & V_ADP_PROBED)
155 #define init_done(adp) ((adp)->va_flags & V_ADP_INITIALIZED)
156 #define config_done(adp) ((adp)->va_flags & V_ADP_REGISTERED)
157
158 /* various sizes */
159 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
160 #define V_MODE_PARAM_SIZE 64
161
162 /* video adapter state buffer */
163 struct adp_state {
164 int sig;
165 #define V_STATE_SIG 0x736f6962
166 u_char regs[V_MODE_PARAM_SIZE];
167 };
168 typedef struct adp_state adp_state_t;
169
170 /*
171 * NOTE: `va_window' should have a virtual address, but is initialized
172 * with a physical address in the following table, as verify_adapter()
173 * will perform address conversion at run-time.
174 */
175 static video_adapter_t biosadapter = {
176 0, KD_VGA, VGA_DRIVER_NAME, 0, 0, V_ADP_COLOR, IO_VGA, 32,
177 EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE,
178 0, 0, 0, M_VGA_C80x25, M_C80x25, M_VGA_C80x25
179 };
180
181 /* video driver declarations */
182 static int vga_configure(int flags);
183 int (*vga_sub_configure)(int flags);
184 #if 0
185 static int vga_nop(void);
186 #endif
187 static int vga_error(void);
188 static vi_probe_t vga_probe;
189 static vi_init_t vga_init;
190 static vi_get_info_t vga_get_info;
191 static vi_query_mode_t vga_query_mode;
192 static vi_set_mode_t vga_set_mode;
193 static vi_save_font_t vga_save_font;
194 static vi_load_font_t vga_load_font;
195 static vi_show_font_t vga_show_font;
196 static vi_save_palette_t vga_save_palette;
197 static vi_load_palette_t vga_load_palette;
198 static vi_set_border_t vga_set_border;
199 static vi_save_state_t vga_save_state;
200 static vi_load_state_t vga_load_state;
201 static vi_set_win_org_t vga_set_origin;
202 static vi_read_hw_cursor_t vga_read_hw_cursor;
203 static vi_set_hw_cursor_t vga_set_hw_cursor;
204 static vi_set_hw_cursor_shape_t vga_set_hw_cursor_shape;
205 static vi_blank_display_t vga_blank_display;
206 static vi_mmap_t vga_mmap_buf;
207 static vi_ioctl_t vga_dev_ioctl;
208 #ifndef VGA_NO_MODE_CHANGE
209 static vi_clear_t vga_clear;
210 static vi_fill_rect_t vga_fill_rect;
211 static vi_bitblt_t vga_bitblt;
212 #else /* VGA_NO_MODE_CHANGE */
213 #define vga_clear (vi_clear_t *)vga_error
214 #define vga_fill_rect (vi_fill_rect_t *)vga_error
215 #define vga_bitblt (vi_bitblt_t *)vga_error
216 #endif
217 static vi_diag_t vga_diag;
218
219 static video_switch_t vgavidsw = {
220 vga_probe,
221 vga_init,
222 vga_get_info,
223 vga_query_mode,
224 vga_set_mode,
225 vga_save_font,
226 vga_load_font,
227 vga_show_font,
228 vga_save_palette,
229 vga_load_palette,
230 vga_set_border,
231 vga_save_state,
232 vga_load_state,
233 vga_set_origin,
234 vga_read_hw_cursor,
235 vga_set_hw_cursor,
236 vga_set_hw_cursor_shape,
237 vga_blank_display,
238 vga_mmap_buf,
239 vga_dev_ioctl,
240 vga_clear,
241 vga_fill_rect,
242 vga_bitblt,
243 vga_error,
244 vga_error,
245 vga_diag,
246 };
247
248 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
249
250 /* VGA BIOS standard video modes */
251 #define EOT (-1)
252 #define NA (-2)
253
254 static video_info_t bios_vmode[] = {
255 /* CGA */
256 { M_B40x25, V_INFO_COLOR, 40, 25, 8, 8, 2, 1,
257 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
258 { M_C40x25, V_INFO_COLOR, 40, 25, 8, 8, 4, 1,
259 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
260 { M_B80x25, V_INFO_COLOR, 80, 25, 8, 8, 2, 1,
261 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
262 { M_C80x25, V_INFO_COLOR, 80, 25, 8, 8, 4, 1,
263 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
264 /* EGA */
265 { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
266 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
267 { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
268 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
269 { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
270 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
271 { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
272 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
273 /* VGA */
274 { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
275 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
276 { M_VGA_M80x25, 0, 80, 25, 8, 16, 2, 1,
277 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
278 { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
279 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
280 /* MDA */
281 { M_EGAMONO80x25, 0, 80, 25, 8, 14, 2, 1,
282 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
283 /* EGA */
284 { M_ENH_B80x43, 0, 80, 43, 8, 8, 2, 1,
285 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
286 { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8, 8, 4, 1,
287 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
288 /* VGA */
289 { M_VGA_M80x30, 0, 80, 30, 8, 16, 2, 1,
290 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
291 { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
292 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
293 { M_VGA_M80x50, 0, 80, 50, 8, 8, 2, 1,
294 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
295 { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8, 8, 4, 1,
296 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
297 { M_VGA_M80x60, 0, 80, 60, 8, 8, 2, 1,
298 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
299 { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8, 8, 4, 1,
300 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
301
302 #ifndef VGA_NO_MODE_CHANGE
303
304 #ifdef VGA_WIDTH90
305 { M_VGA_M90x25, 0, 90, 25, 8, 16, 2, 1,
306 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
307 { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
308 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
309 { M_VGA_M90x30, 0, 90, 30, 8, 16, 2, 1,
310 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
311 { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
312 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
313 { M_VGA_M90x43, 0, 90, 43, 8, 8, 2, 1,
314 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
315 { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8, 8, 4, 1,
316 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
317 { M_VGA_M90x50, 0, 90, 50, 8, 8, 2, 1,
318 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
319 { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8, 8, 4, 1,
320 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
321 { M_VGA_M90x60, 0, 90, 60, 8, 8, 2, 1,
322 MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
323 { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8, 8, 4, 1,
324 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
325 #endif /* VGA_WIDTH90 */
326
327 /* CGA */
328 { M_BG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
329 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
330 { M_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 2, 1,
331 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
332 { M_BG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 1, 1,
333 CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
334 /* EGA */
335 { M_CG320_D, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 4, 4,
336 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
337 V_INFO_MM_PLANAR },
338 { M_CG640_E, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8, 8, 4, 4,
339 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
340 V_INFO_MM_PLANAR },
341 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
342 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
343 V_INFO_MM_PLANAR },
344 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
345 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
346 V_INFO_MM_PLANAR },
347 { M_CG640x350, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
348 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
349 V_INFO_MM_PLANAR },
350 { M_ENH_CG640, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
351 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
352 V_INFO_MM_PLANAR },
353 /* VGA */
354 { M_BG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
355 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
356 V_INFO_MM_PLANAR },
357 { M_CG640x480, V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
358 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
359 V_INFO_MM_PLANAR },
360 { M_VGA_CG320, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8, 8, 8, 1,
361 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
362 V_INFO_MM_PACKED, 1 },
363 { M_VGA_MODEX, V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8, 8, 8, 4,
364 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
365 V_INFO_MM_VGAX, 1 },
366 #endif /* VGA_NO_MODE_CHANGE */
367
368 { EOT },
369 };
370
371 static int vga_init_done = FALSE;
372 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
373 static u_char *video_mode_ptr = NULL;
374 #endif
375 static u_char *mode_map[V_MODE_MAP_SIZE];
376 static adp_state_t adpstate;
377 static adp_state_t adpstate2;
378 static int rows_offset = 1;
379
380 /* local macros and functions */
381 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
382
383 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
384 static void map_mode_table(u_char **, u_char *);
385 static int map_mode_num(int);
386 #endif
387 #ifndef VGA_NO_BIOS
388 static int map_bios_mode_num(int);
389 #endif
390 static u_char *get_mode_param(int);
391 static int verify_adapter(video_adapter_t *);
392 static void update_adapter_info(video_adapter_t *, video_info_t *);
393 static int probe_adapters(void);
394 static int set_line_length(video_adapter_t *, int);
395 static int set_display_start(video_adapter_t *, int, int);
396
397 #ifndef VGA_NO_MODE_CHANGE
398 #ifdef VGA_WIDTH90
399 static void set_width90(adp_state_t *);
400 #endif
401 #endif /* !VGA_NO_MODE_CHANGE */
402
403 #ifndef VGA_NO_FONT_LOADING
404 #define PARAM_BUFSIZE 6
405 static void set_font_mode(video_adapter_t *, u_char *);
406 static void set_normal_mode(video_adapter_t *, u_char *);
407 #endif
408
409 #ifndef VGA_NO_MODE_CHANGE
410 static void filll_io(int, vm_offset_t, size_t);
411 static void planar_fill(video_adapter_t *, int);
412 static void packed_fill(video_adapter_t *, int);
413 static void direct_fill(video_adapter_t *, int);
414 #ifdef notyet
415 static void planar_fill_rect(video_adapter_t *, int, int, int, int, int);
416 static void packed_fill_rect(video_adapter_t *, int, int, int, int, int);
417 static void direct_fill_rect16(video_adapter_t *, int, int, int, int, int);
418 static void direct_fill_rect24(video_adapter_t *, int, int, int, int, int);
419 static void direct_fill_rect32(video_adapter_t *, int, int, int, int, int);
420 #endif /* notyet */
421 #endif /* !VGA_NO_MODE_CHANGE */
422
423 #define ISMAPPED(pa, width) \
424 (((pa) <= (u_long)0x1000 - (width)) \
425 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
426
427 #define prologue(adp, flag, err) \
428 if (!vga_init_done || !((adp)->va_flags & (flag))) \
429 return (err)
430
431 /* a backdoor for the console driver */
432 static int
433 vga_configure(int flags)
434 {
435 probe_adapters();
436 if (probe_done(&biosadapter)) {
437 biosadapter.va_flags |= V_ADP_INITIALIZED;
438 if (!config_done(&biosadapter) && !(vid_register(&biosadapter) < 0))
439 biosadapter.va_flags |= V_ADP_REGISTERED;
440 }
441 if (vga_sub_configure != NULL)
442 (*vga_sub_configure)(flags);
443
444 return 1;
445 }
446
447 /* local subroutines */
448
449 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
450 /* construct the mode parameter map (accept 40x25, 80x25 and 80x30 modes) */
451 static void
452 map_mode_table(u_char *map[], u_char *table)
453 {
454 int i, valid;
455
456 for(i = 0; i < V_MODE_MAP_SIZE; ++i) {
457 map[i] = table + i*V_MODE_PARAM_SIZE;
458 valid = 0;
459 if ((map[i][0] == 40 && map[i][1] == 24) ||
460 (map[i][0] == 80 && (map[i][1] == 24 || map[i][1] == 29)))
461 valid++;
462 if (!valid)
463 map[i] = NULL;
464 }
465 }
466 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
467
468 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
469 /* map the non-standard video mode to a known mode number */
470 static int
471 map_mode_num(int mode)
472 {
473 static struct {
474 int from;
475 int to;
476 } mode_map[] = {
477 { M_ENH_B80x43, M_ENH_B80x25 },
478 { M_ENH_C80x43, M_ENH_C80x25 },
479 { M_VGA_M80x30, M_VGA_M80x25 },
480 { M_VGA_C80x30, M_VGA_C80x25 },
481 { M_VGA_M80x50, M_VGA_M80x25 },
482 { M_VGA_C80x50, M_VGA_C80x25 },
483 { M_VGA_M80x60, M_VGA_M80x25 },
484 { M_VGA_C80x60, M_VGA_C80x25 },
485 #ifdef VGA_WIDTH90
486 { M_VGA_M90x25, M_VGA_M80x25 },
487 { M_VGA_C90x25, M_VGA_C80x25 },
488 { M_VGA_M90x30, M_VGA_M80x25 },
489 { M_VGA_C90x30, M_VGA_C80x25 },
490 { M_VGA_M90x43, M_ENH_B80x25 },
491 { M_VGA_C90x43, M_ENH_C80x25 },
492 { M_VGA_M90x50, M_VGA_M80x25 },
493 { M_VGA_C90x50, M_VGA_C80x25 },
494 { M_VGA_M90x60, M_VGA_M80x25 },
495 { M_VGA_C90x60, M_VGA_C80x25 },
496 #endif
497 { M_VGA_MODEX, M_VGA_CG320 },
498 };
499 int i;
500
501 for (i = 0; i < NELEM(mode_map); ++i) {
502 if (mode_map[i].from == mode)
503 return mode_map[i].to;
504 }
505 return mode;
506 }
507 #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
508
509 #ifndef VGA_NO_BIOS
510 /* turn the BIOS video number into our video mode number */
511 static int
512 map_bios_mode_num(int bios_mode)
513 {
514 static int vga_modes[20] = {
515 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
516 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
517 M_BG320, M_CG320,
518 M_BG640,
519 M_VGA_M80x25, /* 7 */
520 8, 9, 10, 11, 12,
521 M_CG320_D,
522 M_CG640_E,
523 M_ENHMONOAPA2,
524 M_ENH_CG640,
525 M_BG640x480, M_CG640x480,
526 M_VGA_CG320,
527 };
528
529 if (bios_mode < NELEM(vga_modes))
530 return vga_modes[bios_mode];
531
532 return M_VGA_C80x25;
533 }
534 #endif
535
536 /* look up a parameter table entry */
537 static u_char *
538 get_mode_param(int mode)
539 {
540 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
541 if (mode >= V_MODE_MAP_SIZE)
542 mode = map_mode_num(mode);
543 #endif
544 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
545 return mode_map[mode];
546 else
547 return NULL;
548 }
549
550 static int
551 verify_adapter(video_adapter_t *adp)
552 {
553 vm_offset_t buf;
554 u_int16_t v;
555 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
556 u_int32_t p;
557 #endif
558
559 buf = BIOS_PADDRTOVADDR(adp->va_window);
560 v = readw(buf);
561 writew(buf, 0xA55A);
562 if (readw(buf) != 0xA55A)
563 return ENXIO;
564 writew(buf, v);
565
566 outb(CRTC, 7);
567 if (inb(CRTC) != 7)
568 return ENXIO;
569
570 adp->va_flags |= V_ADP_STATELOAD | V_ADP_STATESAVE | V_ADP_PALETTE |
571 V_ADP_BORDER;
572
573 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
574 /* get the BIOS video mode pointer */
575 p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
576 p = BIOS_SADDRTOLADDR(p);
577 if (ISMAPPED(p, sizeof(u_int32_t))) {
578 p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
579 p = BIOS_SADDRTOLADDR(p);
580 if (ISMAPPED(p, V_MODE_PARAM_SIZE))
581 video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
582 }
583 #endif
584
585 return 0;
586 }
587
588 static void
589 update_adapter_info(video_adapter_t *adp, video_info_t *info)
590 {
591 adp->va_flags |= V_ADP_COLOR;
592 adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
593 adp->va_window_size = info->vi_window_size;
594 adp->va_window_gran = info->vi_window_gran;
595 adp->va_window_orig = 0;
596 /* XXX */
597 adp->va_buffer = info->vi_buffer;
598 adp->va_buffer_size = info->vi_buffer_size;
599 if (info->vi_mem_model == V_INFO_MM_VGAX) {
600 adp->va_line_width = info->vi_width/2;
601 } else if (info->vi_flags & V_INFO_GRAPHICS) {
602 switch (info->vi_depth/info->vi_planes) {
603 case 1:
604 adp->va_line_width = info->vi_width/8;
605 break;
606 case 2:
607 adp->va_line_width = info->vi_width/4;
608 break;
609 case 4:
610 adp->va_line_width = info->vi_width/2;
611 break;
612 case 8:
613 default: /* shouldn't happen */
614 adp->va_line_width = info->vi_width;
615 break;
616 }
617 } else {
618 adp->va_line_width = info->vi_width;
619 }
620 adp->va_disp_start.x = 0;
621 adp->va_disp_start.y = 0;
622 bcopy(info, &adp->va_info, sizeof(adp->va_info));
623 }
624
625 /* probe video adapters and return the number of detected adapters */
626 static int
627 probe_adapters(void)
628 {
629 video_adapter_t *adp;
630 video_info_t info;
631 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
632 u_char *mp;
633 #endif
634 int i;
635
636 /* do this test only once */
637 if (vga_init_done)
638 return 1;
639 vga_init_done = TRUE;
640
641 if (verify_adapter(&biosadapter) != 0)
642 return 0;
643
644 biosadapter.va_flags |= V_ADP_PROBED;
645 #ifndef VGA_NO_BIOS
646 biosadapter.va_initial_bios_mode = readb(BIOS_PADDRTOVADDR(0x449));
647 biosadapter.va_mode = biosadapter.va_initial_mode =
648 map_bios_mode_num(biosadapter.va_initial_bios_mode);
649 #endif
650
651 /*
652 * Ensure a zero start address. This is mainly to recover after
653 * switching from pcvt using userconfig(). The registers are w/o
654 * for old hardware so it's too hard to relocate the active screen
655 * memory.
656 * This must be done before vga_save_state() for VGA.
657 */
658 outb(CRTC, 12);
659 outb(CRTC + 1, 0);
660 outb(CRTC, 13);
661 outb(CRTC + 1, 0);
662
663 /* the video mode parameter table in VGA BIOS */
664 /* NOTE: there can be only one VGA recognized by the video BIOS.
665 */
666 adp = &biosadapter;
667 bzero(mode_map, sizeof(mode_map));
668 vga_save_state(adp, &adpstate, sizeof(adpstate));
669 for(i = 0; i < 16; i++)
670 adp->va_palette_regs[i] = adpstate.regs[35 + i];
671 #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
672 mode_map[adp->va_initial_mode] = adpstate.regs;
673 rows_offset = 1;
674 #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
675 if (video_mode_ptr == NULL) {
676 mode_map[adp->va_initial_mode] = adpstate.regs;
677 rows_offset = 1;
678 } else {
679 /* discard modes that we are not familiar with */
680 map_mode_table(mode_map, video_mode_ptr);
681 mp = get_mode_param(adp->va_initial_mode);
682 #if !defined(VGA_KEEP_POWERON_MODE)
683 if (mp != NULL) {
684 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
685 rows_offset = adpstate.regs[1] + 1 - mp[1];
686 } else
687 #endif
688 {
689 mode_map[adp->va_initial_mode] = adpstate.regs;
690 rows_offset = 1;
691 }
692 }
693 #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
694
695 #ifndef VGA_NO_MODE_CHANGE
696 adp->va_flags |= V_ADP_MODECHANGE;
697 #endif
698 #ifndef VGA_NO_FONT_LOADING
699 adp->va_flags |= V_ADP_FONT;
700 #endif
701
702 /* XXX remove conflicting modes */
703 for (i = 0; i < M_VGA_CG320; i++) {
704 if (vga_get_info(&biosadapter, i, &info))
705 continue;
706 if ((info.vi_flags & V_INFO_COLOR) != V_ADP_COLOR)
707 mode_map[i] = NULL;
708 }
709
710 /* buffer address */
711 vga_get_info(&biosadapter, biosadapter.va_initial_mode, &info);
712 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
713 update_adapter_info(&biosadapter, &info);
714
715 /*
716 * XXX: we should verify the following values for the primary adapter...
717 * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
718 * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02)
719 * ? 0 : V_ADP_COLOR;
720 * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
721 * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
722 * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
723 * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
724 */
725
726 return 1;
727 }
728
729 /* set the scan line length in pixel */
730 static int
731 set_line_length(video_adapter_t *adp, int pixel)
732 {
733 u_char *mp;
734 int ppw; /* pixels per word */
735 int bpl; /* bytes per line */
736 int count;
737
738 mp = get_mode_param(adp->va_mode);
739 if (mp == NULL)
740 return EINVAL;
741
742 switch (adp->va_info.vi_mem_model) {
743 case V_INFO_MM_PLANAR:
744 ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
745 count = (pixel + ppw - 1)/ppw/2;
746 bpl = ((pixel + ppw - 1)/ppw/2)*4;
747 break;
748 case V_INFO_MM_PACKED:
749 count = (pixel + 7)/8;
750 bpl = ((pixel + 7)/8)*8;
751 break;
752 case V_INFO_MM_TEXT:
753 count = (pixel + 7)/8; /* columns */
754 bpl = (pixel + 7)/8; /* columns */
755 break;
756 default:
757 return ENODEV;
758 }
759
760 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
761 count *= 2; /* byte mode */
762 outb(CRTC, 0x13);
763 outb(CRTC, count);
764 adp->va_line_width = bpl;
765
766 return 0;
767 }
768
769 static int
770 set_display_start(video_adapter_t *adp, int x, int y)
771 {
772 int off; /* byte offset (graphics mode)/word offset (text mode) */
773 int poff; /* pixel offset */
774 int roff; /* row offset */
775 int ppb; /* pixels per byte */
776
777 if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
778 ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
779 off = y*adp->va_line_width + x/ppb;
780 roff = 0;
781 poff = x%ppb;
782 } else {
783 outb(TSIDX, 1);
784 if (inb(TSREG) & 1)
785 ppb = 9;
786 else
787 ppb = 8;
788 off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
789 roff = y%adp->va_info.vi_cheight;
790 /* FIXME: is this correct? XXX */
791 if (ppb == 8)
792 poff = x%ppb;
793 else
794 poff = (x + 8)%ppb;
795 }
796
797 /* start address */
798 outb(CRTC, 0xc); /* high */
799 outb(CRTC + 1, off >> 8);
800 outb(CRTC, 0xd); /* low */
801 outb(CRTC + 1, off & 0xff);
802
803 /* horizontal pel pan */
804 inb(CRTC + 6);
805 outb(ATC, 0x13 | 0x20);
806 outb(ATC, poff);
807 inb(CRTC + 6);
808 outb(ATC, 0x20);
809
810 /* preset raw scan */
811 outb(CRTC, 8);
812 outb(CRTC + 1, roff);
813
814 adp->va_disp_start.x = x;
815 adp->va_disp_start.y = y;
816 return 0;
817 }
818
819 #ifndef VGA_NO_MODE_CHANGE
820 #if defined(__i386__) || defined(__x86_64__) /* XXX */
821 static void
822 fill(int val, void *d, size_t size)
823 {
824 u_char *p = d;
825
826 while (size-- > 0)
827 *p++ = val;
828 }
829 #endif /* __i386__ || __x86_64__ */
830
831 static void
832 filll_io(int val, vm_offset_t d, size_t size)
833 {
834 while (size-- > 0) {
835 writel(d, val);
836 d += sizeof(u_int32_t);
837 }
838 }
839 #endif /* !VGA_NO_MODE_CHANGE */
840
841 /* entry points */
842
843 #if 0
844 static int
845 vga_nop(void)
846 {
847 return 0;
848 }
849 #endif
850
851 static int
852 vga_error(void)
853 {
854 return ENODEV;
855 }
856
857 static int
858 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
859 {
860 probe_adapters();
861 if (unit != 0)
862 return ENXIO;
863
864 *adpp = &biosadapter;
865
866 return 0;
867 }
868
869 static int
870 vga_init(int unit, video_adapter_t *adp, int flags)
871 {
872 if ((unit != 0) || (adp == NULL) || !probe_done(adp))
873 return ENXIO;
874
875 if (!init_done(adp)) {
876 /* nothing to do really... */
877 adp->va_flags |= V_ADP_INITIALIZED;
878 }
879
880 if (!config_done(adp)) {
881 if (vid_register(adp) < 0)
882 return ENXIO;
883 adp->va_flags |= V_ADP_REGISTERED;
884 }
885 if (vga_sub_configure != NULL)
886 (*vga_sub_configure)(0);
887
888 return 0;
889 }
890
891 /*
892 * get_info():
893 * Return the video_info structure of the requested video mode.
894 */
895 static int
896 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
897 {
898 int i;
899
900 if (!vga_init_done)
901 return ENXIO;
902
903 #ifndef VGA_NO_MODE_CHANGE
904 if (adp->va_flags & V_ADP_MODECHANGE) {
905 /*
906 * If the parameter table entry for this mode is not found,
907 * the mode is not supported...
908 */
909 if (get_mode_param(mode) == NULL)
910 return EINVAL;
911 } else
912 #endif /* VGA_NO_MODE_CHANGE */
913 {
914 /*
915 * Even if we don't support video mode switching on this adapter,
916 * the information on the initial (thus current) video mode
917 * should be made available.
918 */
919 if (mode != adp->va_initial_mode)
920 return EINVAL;
921 }
922
923 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
924 if (bios_vmode[i].vi_mode == NA)
925 continue;
926 if (mode == bios_vmode[i].vi_mode) {
927 *info = bios_vmode[i];
928 /* XXX */
929 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
930 return 0;
931 }
932 }
933 return EINVAL;
934 }
935
936 /*
937 * query_mode():
938 * Find a video mode matching the requested parameters.
939 * Fields filled with 0 are considered "don't care" fields and
940 * match any modes.
941 */
942 static int
943 vga_query_mode(video_adapter_t *adp, video_info_t *info)
944 {
945 int i;
946
947 if (!vga_init_done)
948 return ENXIO;
949
950 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
951 if (bios_vmode[i].vi_mode == NA)
952 continue;
953
954 if ((info->vi_width != 0)
955 && (info->vi_width != bios_vmode[i].vi_width))
956 continue;
957 if ((info->vi_height != 0)
958 && (info->vi_height != bios_vmode[i].vi_height))
959 continue;
960 if ((info->vi_cwidth != 0)
961 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
962 continue;
963 if ((info->vi_cheight != 0)
964 && (info->vi_cheight != bios_vmode[i].vi_cheight))
965 continue;
966 if ((info->vi_depth != 0)
967 && (info->vi_depth != bios_vmode[i].vi_depth))
968 continue;
969 if ((info->vi_planes != 0)
970 && (info->vi_planes != bios_vmode[i].vi_planes))
971 continue;
972 /* XXX: should check pixel format, memory model */
973 if ((info->vi_flags != 0)
974 && (info->vi_flags != bios_vmode[i].vi_flags))
975 continue;
976
977 /* verify if this mode is supported on this adapter */
978 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
979 continue;
980 return 0;
981 }
982 return ENODEV;
983 }
984
985 /*
986 * set_mode():
987 * Change the video mode.
988 */
989
990 #ifndef VGA_NO_MODE_CHANGE
991 #ifdef VGA_WIDTH90
992 static void
993 set_width90(adp_state_t *params)
994 {
995 /*
996 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
997 * and alexv@sui.gda.itesm.mx.
998 */
999 params->regs[5] |= 1; /* toggle 8 pixel wide fonts */
1000 params->regs[10+0x0] = 0x6b;
1001 params->regs[10+0x1] = 0x59;
1002 params->regs[10+0x2] = 0x5a;
1003 params->regs[10+0x3] = 0x8e;
1004 params->regs[10+0x4] = 0x5e;
1005 params->regs[10+0x5] = 0x8a;
1006 params->regs[10+0x13] = 45;
1007 params->regs[35+0x13] = 0;
1008 }
1009 #endif /* VGA_WIDTH90 */
1010 #endif /* !VGA_NO_MODE_CHANGE */
1011
1012 static int
1013 vga_set_mode(video_adapter_t *adp, int mode)
1014 {
1015 #ifndef VGA_NO_MODE_CHANGE
1016 video_info_t info;
1017 adp_state_t params;
1018
1019 prologue(adp, V_ADP_MODECHANGE, ENODEV);
1020
1021 if (vga_get_info(adp, mode, &info))
1022 return EINVAL;
1023
1024 lwkt_gettoken(&tty_token);
1025
1026 #if VGA_DEBUG > 1
1027 kprintf("vga_set_mode(): setting mode %d\n", mode);
1028 #endif
1029
1030 params.sig = V_STATE_SIG;
1031 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1032
1033 switch (mode) {
1034 #ifdef VGA_WIDTH90
1035 case M_VGA_C90x60: case M_VGA_M90x60:
1036 set_width90(¶ms);
1037 /* FALLTHROUGH */
1038 #endif
1039 case M_VGA_C80x60: case M_VGA_M80x60:
1040 params.regs[2] = 0x08;
1041 params.regs[19] = 0x47;
1042 goto special_480l;
1043
1044 #ifdef VGA_WIDTH90
1045 case M_VGA_C90x30: case M_VGA_M90x30:
1046 set_width90(¶ms);
1047 /* FALLTHROUGH */
1048 #endif
1049 case M_VGA_C80x30: case M_VGA_M80x30:
1050 params.regs[19] = 0x4f;
1051 special_480l:
1052 params.regs[9] |= 0xc0;
1053 params.regs[16] = 0x08;
1054 params.regs[17] = 0x3e;
1055 params.regs[26] = 0xea;
1056 params.regs[28] = 0xdf;
1057 params.regs[31] = 0xe7;
1058 params.regs[32] = 0x04;
1059 goto setup_mode;
1060
1061 #ifdef VGA_WIDTH90
1062 case M_VGA_C90x43: case M_VGA_M90x43:
1063 set_width90(¶ms);
1064 /* FALLTHROUGH */
1065 #endif
1066 case M_ENH_C80x43: case M_ENH_B80x43:
1067 params.regs[28] = 87;
1068 goto special_80x50;
1069
1070 #ifdef VGA_WIDTH90
1071 case M_VGA_C90x50: case M_VGA_M90x50:
1072 set_width90(¶ms);
1073 /* FALLTHROUGH */
1074 #endif
1075 case M_VGA_C80x50: case M_VGA_M80x50:
1076 special_80x50:
1077 params.regs[2] = 8;
1078 params.regs[19] = 7;
1079 goto setup_mode;
1080
1081 #ifdef VGA_WIDTH90
1082 case M_VGA_C90x25: case M_VGA_M90x25:
1083 set_width90(¶ms);
1084 /* FALLTHROUGH */
1085 #endif
1086 case M_VGA_C40x25: case M_VGA_C80x25:
1087 case M_VGA_M80x25:
1088 case M_B40x25: case M_C40x25:
1089 case M_B80x25: case M_C80x25:
1090 case M_ENH_B40x25: case M_ENH_C40x25:
1091 case M_ENH_B80x25: case M_ENH_C80x25:
1092 case M_EGAMONO80x25:
1093
1094 setup_mode:
1095 vga_load_state(adp, ¶ms);
1096 break;
1097
1098 case M_VGA_MODEX:
1099 /* "unchain" the VGA mode */
1100 params.regs[5-1+0x04] &= 0xf7;
1101 params.regs[5-1+0x04] |= 0x04;
1102 /* turn off doubleword mode */
1103 params.regs[10+0x14] &= 0xbf;
1104 /* turn off word addressing */
1105 params.regs[10+0x17] |= 0x40;
1106 /* set logical screen width */
1107 params.regs[10+0x13] = 80;
1108 /* set 240 lines */
1109 params.regs[10+0x11] = 0x2c;
1110 params.regs[10+0x06] = 0x0d;
1111 params.regs[10+0x07] = 0x3e;
1112 params.regs[10+0x10] = 0xea;
1113 params.regs[10+0x11] = 0xac;
1114 params.regs[10+0x12] = 0xdf;
1115 params.regs[10+0x15] = 0xe7;
1116 params.regs[10+0x16] = 0x06;
1117 /* set vertical sync polarity to reflect aspect ratio */
1118 params.regs[9] = 0xe3;
1119 goto setup_grmode;
1120
1121 case M_BG320: case M_CG320: case M_BG640:
1122 case M_CG320_D: case M_CG640_E:
1123 case M_CG640x350: case M_ENH_CG640:
1124 case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
1125
1126 setup_grmode:
1127 vga_load_state(adp, ¶ms);
1128 break;
1129
1130 default:
1131 lwkt_reltoken(&tty_token);
1132 return EINVAL;
1133 }
1134
1135 adp->va_mode = mode;
1136 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1137 update_adapter_info(adp, &info);
1138
1139 /* move hardware cursor out of the way */
1140 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
1141
1142 lwkt_reltoken(&tty_token);
1143 return 0;
1144 #else /* VGA_NO_MODE_CHANGE */
1145 lwkt_reltoken(&tty_token);
1146 return ENODEV;
1147 #endif /* VGA_NO_MODE_CHANGE */
1148 }
1149
1150 #ifndef VGA_NO_FONT_LOADING
1151
1152 static void
1153 set_font_mode(video_adapter_t *adp, u_char *buf)
1154 {
1155 crit_enter();
1156
1157 /* save register values */
1158 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1159 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1160 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1161 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1162 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1163 inb(CRTC + 6);
1164 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1165
1166 /* setup vga for loading fonts */
1167 inb(CRTC + 6); /* reset flip-flop */
1168 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1169 inb(CRTC + 6); /* reset flip-flop */
1170 outb(ATC, 0x20); /* enable palette */
1171
1172 #ifdef VGA_ALT_SEQACCESS
1173 outw(TSIDX, 0x0100);
1174 #endif
1175 outw(TSIDX, 0x0402);
1176 outw(TSIDX, 0x0704);
1177 #ifdef VGA_ALT_SEQACCESS
1178 outw(TSIDX, 0x0300);
1179 #endif
1180 outw(GDCIDX, 0x0204);
1181 outw(GDCIDX, 0x0005);
1182 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1183
1184 crit_exit();
1185 }
1186
1187 static void
1188 set_normal_mode(video_adapter_t *adp, u_char *buf)
1189 {
1190 crit_enter();
1191
1192 /* setup vga for normal operation mode again */
1193 inb(CRTC + 6); /* reset flip-flop */
1194 outb(ATC, 0x10); outb(ATC, buf[5]);
1195 inb(CRTC + 6); /* reset flip-flop */
1196 outb(ATC, 0x20); /* enable palette */
1197
1198 #ifdef VGA_ALT_SEQACCESS
1199 outw(TSIDX, 0x0100);
1200 #endif
1201 outw(TSIDX, 0x0002 | (buf[0] << 8));
1202 outw(TSIDX, 0x0004 | (buf[1] << 8));
1203 #ifdef VGA_ALT_SEQACCESS
1204 outw(TSIDX, 0x0300);
1205 #endif
1206 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1207 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1208 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1209
1210 crit_exit();
1211 }
1212
1213 #endif /* VGA_NO_FONT_LOADING */
1214
1215 /*
1216 * save_font():
1217 * Read the font data in the requested font page from the video adapter.
1218 */
1219 static int
1220 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1221 int ch, int count)
1222 {
1223 #ifndef VGA_NO_FONT_LOADING
1224 u_char buf[PARAM_BUFSIZE];
1225 vm_offset_t segment;
1226 int c;
1227 #ifdef VGA_ALT_SEQACCESS
1228 u_char val = 0;
1229 #endif
1230
1231 prologue(adp, V_ADP_FONT, ENODEV);
1232
1233 if (fontsize < 14) {
1234 /* FONT_8 */
1235 fontsize = 8;
1236 } else if (fontsize >= 32) {
1237 fontsize = 32;
1238 } else if (fontsize >= 16) {
1239 /* FONT_16 */
1240 fontsize = 16;
1241 } else {
1242 /* FONT_14 */
1243 fontsize = 14;
1244 }
1245
1246 if (page < 0 || page >= 8)
1247 return EINVAL;
1248 segment = FONT_BUF + 0x4000*page;
1249 if (page > 3)
1250 segment -= 0xe000;
1251
1252 #ifdef VGA_ALT_SEQACCESS
1253 crit_enter();
1254 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1255 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1256 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1257 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1258 crit_exit();
1259 #endif
1260
1261 set_font_mode(adp, buf);
1262 if (fontsize == 32) {
1263 bcopy_fromio((uintptr_t)segment + ch*32, data, fontsize*count);
1264 } else {
1265 for (c = ch; count > 0; ++c, --count) {
1266 bcopy_fromio((uintptr_t)segment + c*32, data, fontsize);
1267 data += fontsize;
1268 }
1269 }
1270 set_normal_mode(adp, buf);
1271
1272 #ifdef VGA_ALT_SEQACCESS
1273 crit_enter();
1274 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1275 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1276 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1277 crit_exit();
1278 #endif
1279
1280 return 0;
1281 #else /* VGA_NO_FONT_LOADING */
1282 return ENODEV;
1283 #endif /* VGA_NO_FONT_LOADING */
1284 }
1285
1286 /*
1287 * load_font():
1288 * Set the font data in the requested font page.
1289 * NOTE: it appears that some recent video adapters do not support
1290 * the font page other than 0... XXX
1291 */
1292 static int
1293 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1294 int ch, int count)
1295 {
1296 #ifndef VGA_NO_FONT_LOADING
1297 u_char buf[PARAM_BUFSIZE];
1298 vm_offset_t segment;
1299 int c;
1300 #ifdef VGA_ALT_SEQACCESS
1301 u_char val = 0;
1302 #endif
1303
1304 prologue(adp, V_ADP_FONT, ENODEV);
1305
1306 if (fontsize < 14) {
1307 /* FONT_8 */
1308 fontsize = 8;
1309 } else if (fontsize >= 32) {
1310 fontsize = 32;
1311 } else if (fontsize >= 16) {
1312 /* FONT_16 */
1313 fontsize = 16;
1314 } else {
1315 /* FONT_14 */
1316 fontsize = 14;
1317 }
1318
1319 if (page < 0 || page >= 8)
1320 return EINVAL;
1321 segment = FONT_BUF + 0x4000*page;
1322 if (page > 3)
1323 segment -= 0xe000;
1324
1325 #ifdef VGA_ALT_SEQACCESS
1326 crit_enter();
1327 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1328 outb(TSIDX, 0x01); val = inb(TSREG); /* disable screen */
1329 outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
1330 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1331 crit_exit();
1332 #endif
1333
1334 set_font_mode(adp, buf);
1335 if (fontsize == 32) {
1336 bcopy_toio(data, (uintptr_t)segment + ch*32, fontsize*count);
1337 } else {
1338 for (c = ch; count > 0; ++c, --count) {
1339 bcopy_toio(data, (uintptr_t)segment + c*32, fontsize);
1340 data += fontsize;
1341 }
1342 }
1343 set_normal_mode(adp, buf);
1344
1345 #ifdef VGA_ALT_SEQACCESS
1346 crit_enter();
1347 outb(TSIDX, 0x00); outb(TSREG, 0x01);
1348 outb(TSIDX, 0x01); outb(TSREG, val & 0xdf); /* enable screen */
1349 outb(TSIDX, 0x00); outb(TSREG, 0x03);
1350 crit_exit();
1351 #endif
1352
1353 return 0;
1354 #else /* VGA_NO_FONT_LOADING */
1355 return ENODEV;
1356 #endif /* VGA_NO_FONT_LOADING */
1357 }
1358
1359 /*
1360 * show_font():
1361 * Activate the requested font page.
1362 * NOTE: it appears that some recent video adapters do not support
1363 * the font page other than 0... XXX
1364 */
1365 static int
1366 vga_show_font(video_adapter_t *adp, int page)
1367 {
1368 #ifndef VGA_NO_FONT_LOADING
1369 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1370
1371 prologue(adp, V_ADP_FONT, ENODEV);
1372 if (page < 0 || page >= 8)
1373 return EINVAL;
1374
1375 crit_enter();
1376 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1377 crit_exit();
1378
1379 return 0;
1380 #else /* VGA_NO_FONT_LOADING */
1381 return ENODEV;
1382 #endif /* VGA_NO_FONT_LOADING */
1383 }
1384
1385 /*
1386 * save_palette():
1387 * Read DAC values. The values have expressed in 8 bits.
1388 *
1389 * VGA
1390 */
1391 static int
1392 vga_save_palette(video_adapter_t *adp, u_char *palette)
1393 {
1394 int i;
1395
1396 prologue(adp, V_ADP_PALETTE, ENODEV);
1397
1398 /*
1399 * We store 8 bit values in the palette buffer, while the standard
1400 * VGA has 6 bit DAC .
1401 */
1402 outb(PALRADR, 0x00);
1403 for (i = 0; i < 256*3; ++i)
1404 palette[i] = inb(PALDATA) << 2;
1405 inb(CRTC + 6); /* reset flip/flop */
1406 return 0;
1407 }
1408
1409 static int
1410 vga_save_palette2(video_adapter_t *adp, int base, int count,
1411 u_char *r, u_char *g, u_char *b)
1412 {
1413 int i;
1414
1415 prologue(adp, V_ADP_PALETTE, ENODEV);
1416
1417 outb(PALRADR, base);
1418 for (i = 0; i < count; ++i) {
1419 r[i] = inb(PALDATA) << 2;
1420 g[i] = inb(PALDATA) << 2;
1421 b[i] = inb(PALDATA) << 2;
1422 }
1423 inb(CRTC + 6); /* reset flip/flop */
1424 return 0;
1425 }
1426
1427 /*
1428 * load_palette():
1429 * Set DAC values.
1430 *
1431 * VGA
1432 */
1433 static int
1434 vga_load_palette(video_adapter_t *adp, const u_char *palette)
1435 {
1436 int i;
1437
1438 prologue(adp, V_ADP_PALETTE, ENODEV);
1439
1440 outb(PIXMASK, 0xff); /* no pixelmask */
1441 outb(PALWADR, 0x00);
1442 for (i = 0; i < 256*3; ++i)
1443 outb(PALDATA, palette[i] >> 2);
1444 inb(CRTC + 6); /* reset flip/flop */
1445 outb(ATC, 0x20); /* enable palette */
1446 return 0;
1447 }
1448
1449 static int
1450 vga_load_palette2(video_adapter_t *adp, int base, int count,
1451 u_char *r, u_char *g, u_char *b)
1452 {
1453 int i;
1454
1455 prologue(adp, V_ADP_PALETTE, ENODEV);
1456
1457 outb(PIXMASK, 0xff); /* no pixelmask */
1458 outb(PALWADR, base);
1459 for (i = 0; i < count; ++i) {
1460 outb(PALDATA, r[i] >> 2);
1461 outb(PALDATA, g[i] >> 2);
1462 outb(PALDATA, b[i] >> 2);
1463 }
1464 inb(CRTC + 6); /* reset flip/flop */
1465 outb(ATC, 0x20); /* enable palette */
1466 return 0;
1467 }
1468
1469 /*
1470 * set_border():
1471 * Change the border color.
1472 */
1473 static int
1474 vga_set_border(video_adapter_t *adp, int color)
1475 {
1476 prologue(adp, V_ADP_BORDER, ENODEV);
1477
1478 inb(CRTC + 6); /* reset flip-flop */
1479 outb(ATC, 0x31); outb(ATC, color & 0xff);
1480
1481 return 0;
1482 }
1483
1484 /*
1485 * save_state():
1486 * Read video register values.
1487 * NOTE: this function only reads the standard VGA registers.
1488 * any extra/extended registers of SVGA adapters are not saved.
1489 */
1490 static int
1491 vga_save_state(video_adapter_t *adp, void *p, size_t size)
1492 {
1493 video_info_t info;
1494 u_char *buf;
1495 int crtc_addr;
1496 int i, j;
1497
1498 if (size == 0) {
1499 /* return the required buffer size */
1500 prologue(adp, V_ADP_STATESAVE, 0);
1501 return sizeof(adp_state_t);
1502 } else {
1503 prologue(adp, V_ADP_STATESAVE, ENODEV);
1504 if (size < sizeof(adp_state_t))
1505 return EINVAL;
1506 }
1507 ((adp_state_t *)p)->sig = V_STATE_SIG;
1508 buf = ((adp_state_t *)p)->regs;
1509 bzero(buf, V_MODE_PARAM_SIZE);
1510 crtc_addr = CRTC;
1511
1512 crit_enter();
1513
1514 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
1515 for (i = 0, j = 5; i < 4; i++) {
1516 outb(TSIDX, i + 1);
1517 buf[j++] = inb(TSREG);
1518 }
1519 buf[9] = inb(MISC + 10); /* dot-clock */
1520 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
1521
1522 for (i = 0, j = 10; i < 25; i++) { /* crtc */
1523 outb(crtc_addr, i);
1524 buf[j++] = inb(crtc_addr + 1);
1525 }
1526 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
1527 inb(crtc_addr + 6); /* reset flip-flop */
1528 outb(ATC, i);
1529 buf[j++] = inb(ATC + 1);
1530 }
1531 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
1532 outb(GDCIDX, i);
1533 buf[j++] = inb(GDCREG);
1534 }
1535 inb(crtc_addr + 6); /* reset flip-flop */
1536 outb(ATC, 0x20); /* enable palette */
1537
1538 crit_exit();
1539
1540 #if 1
1541 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
1542 if (info.vi_flags & V_INFO_GRAPHICS) {
1543 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
1544 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
1545 } else {
1546 buf[0] = info.vi_width; /* COLS */
1547 buf[1] = info.vi_height - 1; /* ROWS */
1548 }
1549 buf[2] = info.vi_cheight; /* POINTS */
1550 } else {
1551 /* XXX: shouldn't be happening... */
1552 kprintf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
1553 adp->va_unit, adp->va_name);
1554 }
1555 #else
1556 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
1557 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
1558 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
1559 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
1560 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
1561 #endif
1562
1563 return 0;
1564 }
1565
1566 /*
1567 * load_state():
1568 * Set video registers at once.
1569 * NOTE: this function only updates the standard VGA registers.
1570 * any extra/extended registers of SVGA adapters are not changed.
1571 */
1572 static int
1573 vga_load_state(video_adapter_t *adp, void *p)
1574 {
1575 u_char *buf;
1576 int crtc_addr;
1577 int i;
1578
1579 prologue(adp, V_ADP_STATELOAD, ENODEV);
1580 if (((adp_state_t *)p)->sig != V_STATE_SIG)
1581 return EINVAL;
1582
1583 buf = ((adp_state_t *)p)->regs;
1584 crtc_addr = CRTC;
1585
1586 #if VGA_DEBUG > 1
1587 hexdump(buf, V_MODE_PARAM_SIZE, NULL, HD_OMIT_CHARS | HD_OMIT_COUNT);
1588 #endif
1589
1590 crit_enter();
1591
1592 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
1593 for (i = 0; i < 4; ++i) { /* program sequencer */
1594 outb(TSIDX, i + 1);
1595 outb(TSREG, buf[i + 5]);
1596 }
1597 outb(MISC, buf[9]); /* set dot-clock */
1598 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
1599 outb(crtc_addr, 0x11);
1600 outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
1601 for (i = 0; i < 25; ++i) { /* program crtc */
1602 outb(crtc_addr, i);
1603 outb(crtc_addr + 1, buf[i + 10]);
1604 }
1605 inb(crtc_addr+6); /* reset flip-flop */
1606 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
1607 outb(ATC, i);
1608 outb(ATC, buf[i + 35]);
1609 }
1610 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
1611 outb(GDCIDX, i);
1612 outb(GDCREG, buf[i + 55]);
1613 }
1614 inb(crtc_addr + 6); /* reset flip-flop */
1615 outb(ATC, 0x20); /* enable palette */
1616
1617 #if 0 /* XXX a temporary workaround for kernel panic */
1618 #ifndef VGA_NO_BIOS
1619 if (adp->va_unit == V_ADP_PRIMARY) {
1620 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
1621 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
1622 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
1623 #if 0
1624 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
1625 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
1626 #endif
1627 }
1628 #endif /* VGA_NO_BIOS */
1629 #endif /* XXX */
1630
1631 crit_exit();
1632 return 0;
1633 }
1634
1635 /*
1636 * set_origin():
1637 * Change the origin (window mapping) of the banked frame buffer.
1638 */
1639 static int
1640 vga_set_origin(video_adapter_t *adp, off_t offset)
1641 {
1642 /*
1643 * The standard video modes do not require window mapping;
1644 * always return error.
1645 */
1646 return ENODEV;
1647 }
1648
1649 /*
1650 * read_hw_cursor():
1651 * Read the position of the hardware text cursor.
1652 */
1653 static int
1654 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1655 {
1656 u_int16_t off;
1657
1658 if (!vga_init_done)
1659 return ENXIO;
1660
1661 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
1662 return ENODEV;
1663
1664 crit_enter();
1665 outb(CRTC, 14);
1666 off = inb(CRTC + 1);
1667 outb(CRTC, 15);
1668 off = (off << 8) | inb(CRTC + 1);
1669 crit_exit();
1670
1671 *row = off / adp->va_info.vi_width;
1672 *col = off % adp->va_info.vi_width;
1673
1674 return 0;
1675 }
1676
1677 /*
1678 * set_hw_cursor():
1679 * Move the hardware text cursor. If col and row are both -1,
1680 * the cursor won't be shown.
1681 */
1682 static int
1683 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
1684 {
1685 u_int16_t off;
1686
1687 if (!vga_init_done)
1688 return ENXIO;
1689
1690 if ((col == -1) && (row == -1)) {
1691 off = -1;
1692 } else {
1693 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
1694 return ENODEV;
1695 off = row*adp->va_info.vi_width + col;
1696 }
1697
1698 crit_enter();
1699 outb(CRTC, 14);
1700 outb(CRTC + 1, off >> 8);
1701 outb(CRTC, 15);
1702 outb(CRTC + 1, off & 0x00ff);
1703 crit_exit();
1704
1705 return 0;
1706 }
1707
1708 /*
1709 * set_hw_cursor_shape():
1710 * Change the shape of the hardware text cursor. If the height is
1711 * zero or negative, the cursor won't be shown.
1712 */
1713 static int
1714 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1715 int celsize, int blink)
1716 {
1717 if (!vga_init_done)
1718 return ENXIO;
1719
1720 crit_enter();
1721 if (height <= 0) {
1722 /* make the cursor invisible */
1723 outb(CRTC, 10);
1724 outb(CRTC + 1, 32);
1725 outb(CRTC, 11);
1726 outb(CRTC + 1, 0);
1727 } else {
1728 outb(CRTC, 10);
1729 outb(CRTC + 1, celsize - base - height);
1730 outb(CRTC, 11);
1731 outb(CRTC + 1, celsize - base - 1);
1732 }
1733 crit_exit();
1734
1735 return 0;
1736 }
1737
1738 /*
1739 * blank_display()
1740 * Put the display in power save/power off mode.
1741 */
1742 static int
1743 vga_blank_display(video_adapter_t *adp, int mode)
1744 {
1745 u_char val;
1746
1747 crit_enter();
1748 switch (mode) {
1749 case V_DISPLAY_SUSPEND:
1750 case V_DISPLAY_STAND_BY:
1751 outb(TSIDX, 0x01);
1752 val = inb(TSREG);
1753 outb(TSIDX, 0x01);
1754 outb(TSREG, val | 0x20);
1755 outb(CRTC, 0x17);
1756 val = inb(CRTC + 1);
1757 outb(CRTC + 1, val & ~0x80);
1758 break;
1759 case V_DISPLAY_OFF:
1760 outb(TSIDX, 0x01);
1761 val = inb(TSREG);
1762 outb(TSIDX, 0x01);
1763 outb(TSREG, val | 0x20);
1764 break;
1765 case V_DISPLAY_ON:
1766 outb(TSIDX, 0x01);
1767 val = inb(TSREG);
1768 outb(TSIDX, 0x01);
1769 outb(TSREG, val & 0xDF);
1770 outb(CRTC, 0x17);
1771 val = inb(CRTC + 1);
1772 outb(CRTC + 1, val | 0x80);
1773 break;
1774 }
1775 crit_exit();
1776
1777 return 0;
1778 }
1779
1780 /*
1781 * mmap():
1782 * Mmap frame buffer.
1783 */
1784 static int
1785 vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
1786 {
1787 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1788 return -1;
1789
1790 #if VGA_DEBUG > 0
1791 kprintf("vga_mmap_buf(): window:0x%x, offset:%p\n",
1792 adp->va_info.vi_window, (void *)offset);
1793 #endif
1794
1795 /* XXX: is this correct? */
1796 if (offset > adp->va_window_size - PAGE_SIZE)
1797 return -1;
1798
1799 #if defined(__i386__)
1800 return i386_btop(adp->va_info.vi_window + offset);
1801 #elif defined(__x86_64__)
1802 return x86_64_btop(adp->va_info.vi_window + offset);
1803 #else
1804 #error "vga_mmap_buf needs to return something"
1805 #endif
1806 }
1807
1808 #ifndef VGA_NO_MODE_CHANGE
1809
1810 static void
1811 planar_fill(video_adapter_t *adp, int val)
1812 {
1813 int length;
1814 int at; /* position in the frame buffer */
1815 int l;
1816
1817 lwkt_gettoken(&tty_token);
1818 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
1819 outw(GDCIDX, 0x0003); /* data rotate/function select */
1820 outw(GDCIDX, 0x0f01); /* set/reset enable */
1821 outw(GDCIDX, 0xff08); /* bit mask */
1822 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
1823 at = 0;
1824 length = adp->va_line_width*adp->va_info.vi_height;
1825 while (length > 0) {
1826 l = imin(length, adp->va_window_size);
1827 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1828 bzero_io(adp->va_window, l);
1829 length -= l;
1830 at += l;
1831 }
1832 outw(GDCIDX, 0x0000); /* set/reset */
1833 outw(GDCIDX, 0x0001); /* set/reset enable */
1834 lwkt_reltoken(&tty_token);
1835 }
1836
1837 static void
1838 packed_fill(video_adapter_t *adp, int val)
1839 {
1840 int length;
1841 int at; /* position in the frame buffer */
1842 int l;
1843
1844 lwkt_gettoken(&tty_token);
1845 at = 0;
1846 length = adp->va_line_width*adp->va_info.vi_height;
1847 while (length > 0) {
1848 l = imin(length, adp->va_window_size);
1849 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1850 fill_io(val, adp->va_window, l);
1851 length -= l;
1852 at += l;
1853 }
1854 lwkt_reltoken(&tty_token);
1855 }
1856
1857 static void
1858 direct_fill(video_adapter_t *adp, int val)
1859 {
1860 int length;
1861 int at; /* position in the frame buffer */
1862 int l;
1863
1864 lwkt_gettoken(&tty_token);
1865 at = 0;
1866 length = adp->va_line_width*adp->va_info.vi_height;
1867 while (length > 0) {
1868 l = imin(length, adp->va_window_size);
1869 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1870 switch (adp->va_info.vi_pixel_size) {
1871 case sizeof(u_int16_t):
1872 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
1873 break;
1874 case 3:
1875 /* FIXME */
1876 break;
1877 case sizeof(u_int32_t):
1878 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
1879 break;
1880 }
1881 length -= l;
1882 at += l;
1883 }
1884 lwkt_reltoken(&tty_token);
1885 }
1886
1887 static int
1888 vga_clear(video_adapter_t *adp)
1889 {
1890 switch (adp->va_info.vi_mem_model) {
1891 case V_INFO_MM_TEXT:
1892 /* do nothing? XXX */
1893 break;
1894 case V_INFO_MM_PLANAR:
1895 planar_fill(adp, 0);
1896 break;
1897 case V_INFO_MM_PACKED:
1898 packed_fill(adp, 0);
1899 break;
1900 case V_INFO_MM_DIRECT:
1901 direct_fill(adp, 0);
1902 break;
1903 }
1904 return 0;
1905 }
1906
1907 #ifdef notyet
1908 static void
1909 planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1910 {
1911 int banksize;
1912 int bank;
1913 int pos;
1914 int offset; /* offset within window */
1915 int bx;
1916 int l;
1917
1918 lwkt_gettoken(&tty_token);
1919 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
1920 outw(GDCIDX, 0x0003); /* data rotate/function select */
1921 outw(GDCIDX, 0x0f01); /* set/reset enable */
1922 outw(GDCIDX, 0xff08); /* bit mask */
1923 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
1924
1925 banksize = adp->va_window_size;
1926 bank = -1;
1927 while (cy > 0) {
1928 pos = adp->va_line_width*y + x/8;
1929 if (bank != pos/banksize) {
1930 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
1931 bank = pos/banksize;
1932 }
1933 offset = pos%banksize;
1934 bx = (x + cx)/8 - x/8;
1935 if (x % 8) {
1936 outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
1937 writeb(adp->va_window + offset, 0);
1938 ++offset;
1939 --bx;
1940 if (offset >= banksize) {
1941 offset = 0;
1942 ++bank; /* next bank */
1943 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
1944 }
1945 outw(GDCIDX, 0xff08); /* bit mask */
1946 }
1947 while (bx > 0) {
1948 l = imin(bx, banksize);
1949 bzero_io(adp->va_window + offset, l);
1950 offset += l;
1951 bx -= l;
1952 if (offset >= banksize) {
1953 offset = 0;
1954 ++bank; /* next bank */
1955 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
1956 }
1957 }
1958 if ((x + cx) % 8) {
1959 outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
1960 writeb(adp->va_window + offset, 0);
1961 ++offset;
1962 if (offset >= banksize) {
1963 offset = 0;
1964 ++bank; /* next bank */
1965 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
1966 }
1967 outw(GDCIDX, 0xff08); /* bit mask */
1968 }
1969 ++y;
1970 --cy;
1971 }
1972
1973 outw(GDCIDX, 0xff08); /* bit mask */
1974 outw(GDCIDX, 0x0000); /* set/reset */
1975 outw(GDCIDX, 0x0001); /* set/reset enable */
1976 lwkt_reltoken(&tty_token);
1977 }
1978
1979 static void
1980 packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1981 {
1982 int banksize;
1983 int bank;
1984 int pos;
1985 int offset; /* offset within window */
1986 int end;
1987
1988 lwkt_gettoken(&tty_token);
1989 banksize = adp->va_window_size;
1990 bank = -1;
1991 cx *= adp->va_info.vi_pixel_size;
1992 while (cy > 0) {
1993 pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
1994 if (bank != pos/banksize) {
1995 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
1996 bank = pos/banksize;
1997 }
1998 offset = pos%banksize;
1999 end = imin(offset + cx, banksize);
2000 fill_io(val, adp->va_window + offset,
2001 (end - offset)/adp->va_info.vi_pixel_size);
2002 /* the line may cross the window boundary */
2003 if (offset + cx > banksize) {
2004 ++bank; /* next bank */
2005 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2006 end = offset + cx - banksize;
2007 fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
2008 }
2009 ++y;
2010 --cy;
2011 }
2012 lwkt_reltoken(&tty_token);
2013 }
2014
2015 static void
2016 direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2017 {
2018 int banksize;
2019 int bank;
2020 int pos;
2021 int offset; /* offset within window */
2022 int end;
2023
2024 lwkt_gettoken(&tty_token);
2025 /*
2026 * XXX: the function assumes that banksize is a muliple of
2027 * sizeof(u_int16_t).
2028 */
2029 banksize = adp->va_window_size;
2030 bank = -1;
2031 cx *= sizeof(u_int16_t);
2032 while (cy > 0) {
2033 pos = adp->va_line_width*y + x*sizeof(u_int16_t);
2034 if (bank != pos/banksize) {
2035 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2036 bank = pos/banksize;
2037 }
2038 offset = pos%banksize;
2039 end = imin(offset + cx, banksize);
2040 fillw_io(val, adp->va_window + offset,
2041 (end - offset)/sizeof(u_int16_t));
2042 /* the line may cross the window boundary */
2043 if (offset + cx > banksize) {
2044 ++bank; /* next bank */
2045 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2046 end = offset + cx - banksize;
2047 fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
2048 }
2049 ++y;
2050 --cy;
2051 }
2052 lwkt_reltoken(&tty_token);
2053 }
2054
2055 static void
2056 direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2057 {
2058 int banksize;
2059 int bank;
2060 int pos;
2061 int offset; /* offset within window */
2062 int end;
2063 int i;
2064 int j;
2065 u_int8_t b[3];
2066
2067 lwkt_gettoken(&tty_token);
2068 b[0] = val & 0x0000ff;
2069 b[1] = (val >> 8) & 0x0000ff;
2070 b[2] = (val >> 16) & 0x0000ff;
2071 banksize = adp->va_window_size;
2072 bank = -1;
2073 cx *= 3;
2074 while (cy > 0) {
2075 pos = adp->va_line_width*y + x*3;
2076 if (bank != pos/banksize) {
2077 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2078 bank = pos/banksize;
2079 }
2080 offset = pos%banksize;
2081 end = imin(offset + cx, banksize);
2082 for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
2083 writeb(adp->va_window + j, b[i]);
2084 }
2085 /* the line may cross the window boundary */
2086 if (offset + cx >= banksize) {
2087 ++bank; /* next bank */
2088 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2089 j = 0;
2090 end = offset + cx - banksize;
2091 for (; j < end; i = (++i)%3, ++j) {
2092 writeb(adp->va_window + j, b[i]);
2093 }
2094 }
2095 ++y;
2096 --cy;
2097 }
2098 lwkt_reltoken(&tty_token);
2099 }
2100
2101 static void
2102 direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2103 {
2104 int banksize;
2105 int bank;
2106 int pos;
2107 int offset; /* offset within window */
2108 int end;
2109
2110 lwkt_gettoken(&tty_token);
2111 /*
2112 * XXX: the function assumes that banksize is a muliple of
2113 * sizeof(u_int32_t).
2114 */
2115 banksize = adp->va_window_size;
2116 bank = -1;
2117 cx *= sizeof(u_int32_t);
2118 while (cy > 0) {
2119 pos = adp->va_line_width*y + x*sizeof(u_int32_t);
2120 if (bank != pos/banksize) {
2121 (*vidsw[adp->va_index]->set_win_org)(adp, pos);
2122 bank = pos/banksize;
2123 }
2124 offset = pos%banksize;
2125 end = imin(offset + cx, banksize);
2126 filll_io(val, adp->va_window + offset,
2127 (end - offset)/sizeof(u_int32_t));
2128 /* the line may cross the window boundary */
2129 if (offset + cx > banksize) {
2130 ++bank; /* next bank */
2131 (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
2132 end = offset + cx - banksize;
2133 filll_io(val, adp->va_window, end/sizeof(u_int32_t));
2134 }
2135 ++y;
2136 --cy;
2137 }
2138 lwkt_reltoken(&tty_token);
2139 }
2140
2141 static int
2142 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2143 {
2144 switch (adp->va_info.vi_mem_model) {
2145 case V_INFO_MM_TEXT:
2146 /* do nothing? XXX */
2147 break;
2148 case V_INFO_MM_PLANAR:
2149 planar_fill_rect(adp, val, x, y, cx, cy);
2150 break;
2151 case V_INFO_MM_PACKED:
2152 packed_fill_rect(adp, val, x, y, cx, cy);
2153 break;
2154 case V_INFO_MM_DIRECT:
2155 switch (adp->va_info.vi_pixel_size) {
2156 case sizeof(u_int16_t):
2157 direct_fill_rect16(adp, val, x, y, cx, cy);
2158 break;
2159 case 3:
2160 direct_fill_rect24(adp, val, x, y, cx, cy);
2161 break;
2162 case sizeof(u_int32_t):
2163 direct_fill_rect32(adp, val, x, y, cx, cy);
2164 break;
2165 }
2166 break;
2167 }
2168 return 0;
2169 }
2170 #else /* !notyet */
2171 static int
2172 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
2173 {
2174 return ENODEV;
2175 }
2176 #endif /* notyet */
2177
2178 static int
2179 vga_bitblt(video_adapter_t *adp,...)
2180 {
2181 /* FIXME */
2182 return ENODEV;
2183 }
2184
2185 #endif /* !VGA_NO_MODE_CHANGE */
2186
2187 static int
2188 get_palette(video_adapter_t *adp, int base, int count,
2189 u_char *red, u_char *green, u_char *blue, u_char *trans)
2190 {
2191 u_char *r;
2192 u_char *g;
2193 u_char *b;
2194
2195 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2196 base + count > 256)
2197 return EINVAL;
2198
2199 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
2200 g = r + count;
2201 b = g + count;
2202 if (vga_save_palette2(adp, base, count, r, g, b)) {
2203 kfree(r, M_DEVBUF);
2204 return ENODEV;
2205 }
2206 copyout(r, red, count);
2207 copyout(g, green, count);
2208 copyout(b, blue, count);
2209 if (trans != NULL) {
2210 bzero(r, count);
2211 copyout(r, trans, count);
2212 }
2213 kfree(r, M_DEVBUF);
2214
2215 return 0;
2216 }
2217
2218 static int
2219 set_palette(video_adapter_t *adp, int base, int count,
2220 u_char *red, u_char *green, u_char *blue, u_char *trans)
2221 {
2222 u_char *r;
2223 u_char *g;
2224 u_char *b;
2225 int err;
2226
2227 if (count < 0 || base < 0 || count > 256 || base > 256 ||
2228 base + count > 256)
2229 return EINVAL;
2230
2231 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
2232 g = r + count;
2233 b = g + count;
2234 err = copyin(red, r, count);
2235 if (!err)
2236 err = copyin(green, g, count);
2237 if (!err)
2238 err = copyin(blue, b, count);
2239 if (!err)
2240 err = vga_load_palette2(adp, base, count, r, g, b);
2241 kfree(r, M_DEVBUF);
2242
2243 return (err ? ENODEV : 0);
2244 }
2245
2246 static int
2247 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
2248 {
2249 switch (cmd) {
2250 case FBIO_GETWINORG: /* get frame buffer window origin */
2251 *(u_int *)arg = 0;
2252 return 0;
2253
2254 case FBIO_SETWINORG: /* set frame buffer window origin */
2255 return ENODEV;
2256
2257 case FBIO_SETDISPSTART: /* set display start address */
2258 return (set_display_start(adp,
2259 ((video_display_start_t *)arg)->x,
2260 ((video_display_start_t *)arg)->y)
2261 ? ENODEV : 0);
2262
2263 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
2264 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
2265
2266 case FBIO_GETPALETTE: /* get color palette */
2267 return get_palette(adp, ((video_color_palette_t *)arg)->index,
2268 ((video_color_palette_t *)arg)->count,
2269 ((video_color_palette_t *)arg)->red,
2270 ((video_color_palette_t *)arg)->green,
2271 ((video_color_palette_t *)arg)->blue,
2272 ((video_color_palette_t *)arg)->transparent);
2273
2274 case FBIO_SETPALETTE: /* set color palette */
2275 return set_palette(adp, ((video_color_palette_t *)arg)->index,
2276 ((video_color_palette_t *)arg)->count,
2277 ((video_color_palette_t *)arg)->red,
2278 ((video_color_palette_t *)arg)->green,
2279 ((video_color_palette_t *)arg)->blue,
2280 ((video_color_palette_t *)arg)->transparent);
2281
2282 case FBIOGTYPE: /* get frame buffer type info. */
2283 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
2284 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
2285 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
2286 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
2287 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
2288 ((struct fbtype *)arg)->fb_cmsize = 0;
2289 else
2290 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
2291 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
2292 return 0;
2293
2294 case FBIOGETCMAP: /* get color palette */
2295 return get_palette(adp, ((struct fbcmap *)arg)->index,
2296 ((struct fbcmap *)arg)->count,
2297 ((struct fbcmap *)arg)->red,
2298 ((struct fbcmap *)arg)->green,
2299 ((struct fbcmap *)arg)->blue, NULL);
2300
2301 case FBIOPUTCMAP: /* set color palette */
2302 return set_palette(adp, ((struct fbcmap *)arg)->index,
2303 ((struct fbcmap *)arg)->count,
2304 ((struct fbcmap *)arg)->red,
2305 ((struct fbcmap *)arg)->green,
2306 ((struct fbcmap *)arg)->blue, NULL);
2307
2308 default:
2309 return fb_commonioctl(adp, cmd, arg);
2310 }
2311 }
2312
2313 /*
2314 * diag():
2315 * Print some information about the video adapter and video modes,
2316 * with requested level of details.
2317 */
2318 static int
2319 vga_diag(video_adapter_t *adp, int level)
2320 {
2321 u_char *mp;
2322 #if FB_DEBUG > 1
2323 video_info_t info;
2324 int i;
2325 #endif
2326
2327 if (!vga_init_done)
2328 return ENXIO;
2329
2330 #if FB_DEBUG > 1
2331 #ifndef VGA_NO_BIOS
2332 kprintf("vga: DCC code:0x%02x\n",
2333 readb(BIOS_PADDRTOVADDR(0x488)));
2334 kprintf("vga: CRTC:0x%x, video option:0x%02x, ",
2335 readw(BIOS_PADDRTOVADDR(0x463)),
2336 readb(BIOS_PADDRTOVADDR(0x487)));
2337 kprintf("rows:%d, cols:%d, font height:%d\n",
2338 readb(BIOS_PADDRTOVADDR(0x44a)),
2339 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
2340 readb(BIOS_PADDRTOVADDR(0x485)));
2341 #endif /* VGA_NO_BIOS */
2342 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
2343 kprintf("vga: param table:%p\n", video_mode_ptr);
2344 kprintf("vga: rows_offset:%d\n", rows_offset);
2345 #endif
2346 #endif /* FB_DEBUG > 1 */
2347
2348 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
2349
2350 #if FB_DEBUG > 1
2351 if (adp->va_flags & V_ADP_MODECHANGE) {
2352 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
2353 if (bios_vmode[i].vi_mode == NA)
2354 continue;
2355 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
2356 continue;
2357 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
2358 }
2359 } else {
2360 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
2361 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
2362 }
2363 #endif /* FB_DEBUG > 1 */
2364
2365 #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
2366 if (video_mode_ptr == NULL)
2367 kprintf("vga%d: %s: WARNING: video mode switching is not "
2368 "fully supported on this adapter\n",
2369 adp->va_unit, adp->va_name);
2370 #endif
2371 if (level <= 0)
2372 return 0;
2373
2374 kprintf("VGA parameters upon power-up\n");
2375 hexdump(adpstate.regs, sizeof(adpstate.regs), NULL,
2376 HD_OMIT_CHARS | HD_OMIT_COUNT);
2377
2378 mp = get_mode_param(adp->va_initial_mode);
2379 if (mp == NULL) /* this shouldn't be happening */
2380 return 0;
2381 kprintf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
2382 hexdump(adpstate2.regs, sizeof(adpstate2.regs), NULL,
2383 HD_OMIT_CHARS | HD_OMIT_COUNT);
2384 kprintf("VGA parameters to be used for mode %d\n", adp->va_initial_mode);
2385 hexdump(mp, V_MODE_PARAM_SIZE, NULL, HD_OMIT_CHARS | HD_OMIT_COUNT);
2386
2387 return 0;
2388 }
Cache object: 1d11df4523a825bab6ff30741d03252e
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