4 * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
5 * Copyright (c) 1992-1998 Søren Schmidt
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
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.
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.
31 * $FreeBSD: src/sys/dev/fb/vga.c,v 1.9.2.1 2001/08/11 02:58:44 yokota Exp $
37 #include <sys/param.h>
38 #include <sys/systm.h>
39 #include <sys/kernel.h>
41 #include <sys/fcntl.h>
42 #include <sys/malloc.h>
44 #include <sys/thread2.h>
46 #include <bus/isa/isareg.h>
48 #include <machine/clock.h>
49 #include <machine/md_var.h>
51 #include <machine/pc/bios.h>
55 #include <vm/vm_param.h>
66 vga_probe_unit(int unit, video_adapter_t *buf, int flags)
72 sw = vid_get_switch(VGA_DRIVER_NAME);
75 error = (*sw->probe)(unit, &adp, NULL, flags);
78 bcopy(adp, buf, sizeof(*buf));
83 vga_attach_unit(int unit, vga_softc_t *sc, int flags)
88 sw = vid_get_switch(VGA_DRIVER_NAME);
92 error = (*sw->probe)(unit, &sc->adp, NULL, flags);
95 return (*sw->init)(unit, sc->adp, flags);
98 /* cdev driver functions */
100 #ifdef FB_INSTALL_CDEV
105 vga_open(cdev_t dev, vga_softc_t *sc, int flag, int mode, struct ucred *cred)
109 if (mode & (O_CREAT | O_APPEND | O_TRUNC))
112 return genfbopen(&sc->gensc, sc->adp, flag, mode, cred);
116 vga_close(cdev_t dev, vga_softc_t *sc, int flag, int mode)
118 return genfbclose(&sc->gensc, sc->adp, flag, mode);
122 vga_read(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
124 return genfbread(&sc->gensc, sc->adp, uio, flag);
128 vga_write(cdev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
130 return genfbread(&sc->gensc, sc->adp, uio, flag);
134 vga_ioctl(cdev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
137 return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, cred);
141 vga_mmap(cdev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
143 return genfbmmap(&sc->gensc, sc->adp, offset, prot);
146 #endif /* FB_INSTALL_CDEV */
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)
155 #define V_MODE_MAP_SIZE (M_VGA_CG320 + 1)
156 #define V_MODE_PARAM_SIZE 64
158 /* video adapter state buffer */
161 #define V_STATE_SIG 0x736f6962
162 u_char regs[V_MODE_PARAM_SIZE];
164 typedef struct adp_state adp_state_t;
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.
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
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
210 static vi_diag_t vga_diag;
212 static video_switch_t vgavidsw = {
229 vga_set_hw_cursor_shape,
241 VIDEO_DRIVER(vga, vgavidsw, vga_configure);
243 /* VGA BIOS standard video modes */
247 static video_info_t bios_vmode[] = {
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 },
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 },
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 },
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 },
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 },
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 },
295 #ifndef VGA_NO_MODE_CHANGE
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 */
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 },
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,
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 ,
334 { M_EGAMONOAPA, V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
335 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
337 { M_ENHMONOAPA2,V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
338 GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
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 ,
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 ,
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 ,
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 ,
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,
359 #endif /* VGA_NO_MODE_CHANGE */
364 static int vga_init_done = FALSE;
365 #ifndef VGA_NO_MODE_CHANGE
366 static u_char *video_mode_ptr = NULL;
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;
373 /* local macros and functions */
374 #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
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);
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);
388 #ifndef VGA_NO_MODE_CHANGE
390 static void set_width90(adp_state_t *);
392 #endif /* !VGA_NO_MODE_CHANGE */
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 *);
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 */
407 #define ISMAPPED(pa, width) \
408 (((pa) <= (u_long)0x1000 - (width)) \
409 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
411 #define prologue(adp, flag, err) \
412 if (!vga_init_done || !((adp)->va_flags & (flag))) \
415 /* a backdoor for the console driver */
417 vga_configure(int flags)
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;
425 if (vga_sub_configure != NULL)
426 (*vga_sub_configure)(flags);
431 /* local subroutines */
433 #ifndef VGA_NO_MODE_CHANGE
434 /* construct the mode parameter map (accept 40x25, 80x25 and 80x30 modes) */
436 map_mode_table(u_char *map[], u_char *table)
440 for(i = 0; i < V_MODE_MAP_SIZE; ++i) {
441 map[i] = table + i*V_MODE_PARAM_SIZE;
443 if ((map[i][0] == 40 && map[i][1] == 24) ||
444 (map[i][0] == 80 && (map[i][1] == 24 || map[i][1] == 29)))
450 #endif /* !VGA_NO_MODE_CHANGE */
452 #ifndef VGA_NO_MODE_CHANGE
453 /* map the non-standard video mode to a known mode number */
455 map_mode_num(int mode)
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 },
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 },
481 { M_VGA_MODEX, M_VGA_CG320 },
485 for (i = 0; i < NELEM(mode_map); ++i) {
486 if (mode_map[i].from == mode)
487 return mode_map[i].to;
492 /* turn the BIOS video number into our video mode number */
494 map_bios_mode_num(int bios_mode)
496 static int vga_modes[20] = {
497 M_VGA_C40x25, M_VGA_C40x25, /* 0, 1 */
498 M_VGA_C80x25, M_VGA_C80x25, /* 2, 3 */
501 M_VGA_M80x25, /* 7 */
507 M_BG640x480, M_CG640x480,
511 if (bios_mode < NELEM(vga_modes))
512 return vga_modes[bios_mode];
516 #endif /* !VGA_NO_MODE_CHANGE */
518 /* look up a parameter table entry */
520 get_mode_param(int mode)
522 #ifndef VGA_NO_MODE_CHANGE
523 if (mode >= V_MODE_MAP_SIZE)
524 mode = map_mode_num(mode);
526 if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
527 return mode_map[mode];
533 verify_adapter(video_adapter_t *adp)
537 #ifndef VGA_NO_MODE_CHANGE
541 buf = BIOS_PADDRTOVADDR(adp->va_window);
544 if (readw(buf) != 0xA55A)
552 adp->va_flags |= V_ADP_STATELOAD | V_ADP_STATESAVE | V_ADP_PALETTE |
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);
571 update_adapter_info(video_adapter_t *adp, video_info_t *info)
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;
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) {
586 adp->va_line_width = info->vi_width/8;
589 adp->va_line_width = info->vi_width/4;
592 adp->va_line_width = info->vi_width/2;
595 default: /* shouldn't happen */
596 adp->va_line_width = info->vi_width;
600 adp->va_line_width = info->vi_width;
602 adp->va_disp_start.x = 0;
603 adp->va_disp_start.y = 0;
604 bcopy(info, &adp->va_info, sizeof(adp->va_info));
607 /* probe video adapters and return the number of detected adapters */
611 video_adapter_t *adp;
613 #ifndef VGA_NO_MODE_CHANGE
618 /* do this test only once */
621 vga_init_done = TRUE;
623 if (verify_adapter(&biosadapter) != 0)
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);
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
637 * This must be done before vga_save_state() for VGA.
644 /* the video mode parameter table in VGA BIOS */
645 /* NOTE: there can be only one VGA recognized by the video BIOS.
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;
655 #else /* !VGA_NO_MODE_CHANGE */
656 if (video_mode_ptr == NULL) {
657 mode_map[adp->va_initial_mode] = adpstate.regs;
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
665 bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
666 rows_offset = adpstate.regs[1] + 1 - mp[1];
670 mode_map[adp->va_initial_mode] = adpstate.regs;
674 #endif /* VGA_NO_MODE_CHANGE */
676 #ifndef VGA_NO_MODE_CHANGE
677 adp->va_flags |= V_ADP_MODECHANGE;
679 #ifndef VGA_NO_FONT_LOADING
680 adp->va_flags |= V_ADP_FONT;
683 /* XXX remove conflicting modes */
684 for (i = 0; i < M_VGA_CG320; i++) {
685 if (vga_get_info(&biosadapter, i, &info))
687 if ((info.vi_flags & V_INFO_COLOR) != V_ADP_COLOR)
692 vga_get_info(&biosadapter, biosadapter.va_initial_mode, &info);
693 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
694 update_adapter_info(&biosadapter, &info);
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)
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);
710 /* set the scan line length in pixel */
712 set_line_length(video_adapter_t *adp, int pixel)
715 int ppw; /* pixels per word */
716 int bpl; /* bytes per line */
719 mp = get_mode_param(adp->va_mode);
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;
729 case V_INFO_MM_PACKED:
730 count = (pixel + 7)/8;
731 bpl = ((pixel + 7)/8)*8;
734 count = (pixel + 7)/8; /* columns */
735 bpl = (pixel + 7)/8; /* columns */
741 if (mp[10 + 0x17] & 0x40) /* CRTC mode control reg */
742 count *= 2; /* byte mode */
744 outb(CRTC + 1, count);
745 adp->va_line_width = bpl;
751 set_display_start(video_adapter_t *adp, int x, int y)
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 */
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;
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 */
779 outb(CRTC, 0xc); /* high */
780 outb(CRTC + 1, off >> 8);
781 outb(CRTC, 0xd); /* low */
782 outb(CRTC + 1, off & 0xff);
784 /* horizontal pel pan */
786 outb(ATC, 0x13 | 0x20);
791 /* preset row scan */
793 outb(CRTC + 1, roff);
795 adp->va_disp_start.x = x;
796 adp->va_disp_start.y = y;
800 #ifndef VGA_NO_MODE_CHANGE
801 #if defined(__x86_64__) /* XXX */
803 fill(int val, void *d, size_t size)
810 #endif /* __x86_64__ */
813 filll_io(int val, vm_offset_t d, size_t size)
817 d += sizeof(u_int32_t);
820 #endif /* !VGA_NO_MODE_CHANGE */
831 vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
837 *adpp = &biosadapter;
843 vga_init(int unit, video_adapter_t *adp, int flags)
845 if ((unit != 0) || (adp == NULL) || !probe_done(adp))
848 if (!init_done(adp)) {
849 /* nothing to do really... */
850 adp->va_flags |= V_ADP_INITIALIZED;
853 if (!config_done(adp)) {
854 if (vid_register(adp) < 0)
856 adp->va_flags |= V_ADP_REGISTERED;
858 if (vga_sub_configure != NULL)
859 (*vga_sub_configure)(0);
866 * Return the video_info structure of the requested video mode.
869 vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
876 #ifndef VGA_NO_MODE_CHANGE
877 if (adp->va_flags & V_ADP_MODECHANGE) {
879 * If the parameter table entry for this mode is not found,
880 * the mode is not supported...
882 if (get_mode_param(mode) == NULL)
885 #endif /* VGA_NO_MODE_CHANGE */
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.
892 if (mode != adp->va_initial_mode)
896 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
897 if (bios_vmode[i].vi_mode == NA)
899 if (mode == bios_vmode[i].vi_mode) {
900 *info = bios_vmode[i];
902 info->vi_buffer_size = info->vi_window_size*info->vi_planes;
911 * Find a video mode matching the requested parameters.
912 * Fields filled with 0 are considered "don't care" fields and
916 vga_query_mode(video_adapter_t *adp, video_info_t *info)
923 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
924 if (bios_vmode[i].vi_mode == NA)
927 if ((info->vi_width != 0)
928 && (info->vi_width != bios_vmode[i].vi_width))
930 if ((info->vi_height != 0)
931 && (info->vi_height != bios_vmode[i].vi_height))
933 if ((info->vi_cwidth != 0)
934 && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
936 if ((info->vi_cheight != 0)
937 && (info->vi_cheight != bios_vmode[i].vi_cheight))
939 if ((info->vi_depth != 0)
940 && (info->vi_depth != bios_vmode[i].vi_depth))
942 if ((info->vi_planes != 0)
943 && (info->vi_planes != bios_vmode[i].vi_planes))
945 /* XXX: should check pixel format, memory model */
946 if ((info->vi_flags != 0)
947 && (info->vi_flags != bios_vmode[i].vi_flags))
950 /* verify if this mode is supported on this adapter */
951 if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
960 * Change the video mode.
963 #ifndef VGA_NO_MODE_CHANGE
966 set_width90(adp_state_t *params)
969 * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
970 * and alexv@sui.gda.itesm.mx.
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;
982 #endif /* VGA_WIDTH90 */
983 #endif /* !VGA_NO_MODE_CHANGE */
986 vga_set_mode(video_adapter_t *adp, int mode)
988 #ifndef VGA_NO_MODE_CHANGE
992 prologue(adp, V_ADP_MODECHANGE, ENODEV);
994 if (vga_get_info(adp, mode, &info))
997 lwkt_gettoken(&tty_token);
1000 kprintf("vga_set_mode(): setting mode %d\n", mode);
1003 params.sig = V_STATE_SIG;
1004 bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
1008 case M_VGA_C90x60: case M_VGA_M90x60:
1009 set_width90(¶ms);
1012 case M_VGA_C80x60: case M_VGA_M80x60:
1013 params.regs[2] = 0x08;
1014 params.regs[19] = 0x47;
1018 case M_VGA_C90x30: case M_VGA_M90x30:
1019 set_width90(¶ms);
1022 case M_VGA_C80x30: case M_VGA_M80x30:
1023 params.regs[19] = 0x4f;
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;
1035 case M_VGA_C90x43: case M_VGA_M90x43:
1036 set_width90(¶ms);
1039 case M_ENH_C80x43: case M_ENH_B80x43:
1040 params.regs[28] = 87;
1044 case M_VGA_C90x50: case M_VGA_M90x50:
1045 set_width90(¶ms);
1048 case M_VGA_C80x50: case M_VGA_M80x50:
1051 params.regs[19] = 7;
1055 case M_VGA_C90x25: case M_VGA_M90x25:
1056 set_width90(¶ms);
1059 case M_VGA_C40x25: case M_VGA_C80x25:
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:
1068 vga_load_state(adp, ¶ms);
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;
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;
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:
1100 vga_load_state(adp, ¶ms);
1104 lwkt_reltoken(&tty_token);
1108 adp->va_mode = mode;
1109 info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
1110 update_adapter_info(adp, &info);
1112 /* move hardware cursor out of the way */
1113 (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
1115 lwkt_reltoken(&tty_token);
1117 #else /* VGA_NO_MODE_CHANGE */
1119 #endif /* VGA_NO_MODE_CHANGE */
1122 #ifndef VGA_NO_FONT_LOADING
1125 set_font_mode(video_adapter_t *adp, u_char *buf)
1129 /* save register values */
1130 outb(TSIDX, 0x02); buf[0] = inb(TSREG);
1131 outb(TSIDX, 0x04); buf[1] = inb(TSREG);
1132 outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
1133 outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
1134 outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
1136 outb(ATC, 0x10); buf[5] = inb(ATC + 1);
1138 /* setup vga for loading fonts */
1139 inb(CRTC + 6); /* reset flip-flop */
1140 outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
1141 inb(CRTC + 6); /* reset flip-flop */
1142 outb(ATC, 0x20); /* enable palette */
1143 outw(TSIDX, 0x0402);
1144 outw(TSIDX, 0x0704);
1145 outw(GDCIDX, 0x0204);
1146 outw(GDCIDX, 0x0005);
1147 outw(GDCIDX, 0x0406); /* addr = a0000, 64kb */
1153 set_normal_mode(video_adapter_t *adp, u_char *buf)
1157 /* setup vga for normal operation mode again */
1158 inb(CRTC + 6); /* reset flip-flop */
1159 outb(ATC, 0x10); outb(ATC, buf[5]);
1160 inb(CRTC + 6); /* reset flip-flop */
1161 outb(ATC, 0x20); /* enable palette */
1162 outw(TSIDX, 0x0002 | (buf[0] << 8));
1163 outw(TSIDX, 0x0004 | (buf[1] << 8));
1164 outw(GDCIDX, 0x0004 | (buf[2] << 8));
1165 outw(GDCIDX, 0x0005 | (buf[3] << 8));
1166 outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
1171 #endif /* VGA_NO_FONT_LOADING */
1175 * Read the font data in the requested font page from the video adapter.
1178 vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1181 #ifndef VGA_NO_FONT_LOADING
1182 u_char buf[PARAM_BUFSIZE];
1183 vm_offset_t segment;
1186 prologue(adp, V_ADP_FONT, ENODEV);
1188 if (fontsize < 14) {
1191 } else if (fontsize >= 32) {
1193 } else if (fontsize >= 16) {
1201 if (page < 0 || page >= 8)
1203 segment = FONT_BUF + 0x4000*page;
1207 set_font_mode(adp, buf);
1208 if (fontsize == 32) {
1209 bcopy_fromio((uintptr_t)segment + ch*32, data, fontsize*count);
1211 for (c = ch; count > 0; ++c, --count) {
1212 bcopy_fromio((uintptr_t)segment + c*32, data, fontsize);
1216 set_normal_mode(adp, buf);
1219 #else /* VGA_NO_FONT_LOADING */
1221 #endif /* VGA_NO_FONT_LOADING */
1226 * Set the font data in the requested font page.
1227 * NOTE: it appears that some recent video adapters do not support
1228 * the font page other than 0... XXX
1231 vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
1234 #ifndef VGA_NO_FONT_LOADING
1235 u_char buf[PARAM_BUFSIZE];
1236 vm_offset_t segment;
1239 prologue(adp, V_ADP_FONT, ENODEV);
1241 if (fontsize < 14) {
1244 } else if (fontsize >= 32) {
1246 } else if (fontsize >= 16) {
1254 if (page < 0 || page >= 8)
1256 segment = FONT_BUF + 0x4000*page;
1260 set_font_mode(adp, buf);
1261 if (fontsize == 32) {
1262 bcopy_toio(data, (uintptr_t)segment + ch*32, fontsize*count);
1264 for (c = ch; count > 0; ++c, --count) {
1265 bcopy_toio(data, (uintptr_t)segment + c*32, fontsize);
1269 set_normal_mode(adp, buf);
1272 #else /* VGA_NO_FONT_LOADING */
1274 #endif /* VGA_NO_FONT_LOADING */
1279 * Activate the requested font page.
1280 * NOTE: it appears that some recent video adapters do not support
1281 * the font page other than 0... XXX
1284 vga_show_font(video_adapter_t *adp, int page)
1286 #ifndef VGA_NO_FONT_LOADING
1287 static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
1289 prologue(adp, V_ADP_FONT, ENODEV);
1290 if (page < 0 || page >= 8)
1294 outb(TSIDX, 0x03); outb(TSREG, cg[page]);
1298 #else /* VGA_NO_FONT_LOADING */
1300 #endif /* VGA_NO_FONT_LOADING */
1305 * Read DAC values. The values have expressed in 8 bits.
1310 vga_save_palette(video_adapter_t *adp, u_char *palette)
1314 prologue(adp, V_ADP_PALETTE, ENODEV);
1317 * We store 8 bit values in the palette buffer, while the standard
1318 * VGA has 6 bit DAC .
1320 outb(PALRADR, 0x00);
1321 for (i = 0; i < 256*3; ++i)
1322 palette[i] = inb(PALDATA) << 2;
1323 inb(CRTC + 6); /* reset flip/flop */
1328 vga_save_palette2(video_adapter_t *adp, int base, int count,
1329 u_char *r, u_char *g, u_char *b)
1333 prologue(adp, V_ADP_PALETTE, ENODEV);
1335 outb(PALRADR, base);
1336 for (i = 0; i < count; ++i) {
1337 r[i] = inb(PALDATA) << 2;
1338 g[i] = inb(PALDATA) << 2;
1339 b[i] = inb(PALDATA) << 2;
1341 inb(CRTC + 6); /* reset flip/flop */
1352 vga_load_palette(video_adapter_t *adp, const u_char *palette)
1356 prologue(adp, V_ADP_PALETTE, ENODEV);
1358 outb(PIXMASK, 0xff); /* no pixelmask */
1359 outb(PALWADR, 0x00);
1360 for (i = 0; i < 256*3; ++i)
1361 outb(PALDATA, palette[i] >> 2);
1362 inb(CRTC + 6); /* reset flip/flop */
1363 outb(ATC, 0x20); /* enable palette */
1368 vga_load_palette2(video_adapter_t *adp, int base, int count,
1369 u_char *r, u_char *g, u_char *b)
1373 prologue(adp, V_ADP_PALETTE, ENODEV);
1375 outb(PIXMASK, 0xff); /* no pixelmask */
1376 outb(PALWADR, base);
1377 for (i = 0; i < count; ++i) {
1378 outb(PALDATA, r[i] >> 2);
1379 outb(PALDATA, g[i] >> 2);
1380 outb(PALDATA, b[i] >> 2);
1382 inb(CRTC + 6); /* reset flip/flop */
1383 outb(ATC, 0x20); /* enable palette */
1389 * Change the border color.
1392 vga_set_border(video_adapter_t *adp, int color)
1394 prologue(adp, V_ADP_BORDER, ENODEV);
1396 inb(CRTC + 6); /* reset flip-flop */
1397 outb(ATC, 0x31); outb(ATC, color & 0xff);
1404 * Read video register values.
1405 * NOTE: this function only reads the standard VGA registers.
1406 * any extra/extended registers of SVGA adapters are not saved.
1409 vga_save_state(video_adapter_t *adp, void *p, size_t size)
1416 /* return the required buffer size */
1417 prologue(adp, V_ADP_STATESAVE, 0);
1418 return sizeof(adp_state_t);
1420 prologue(adp, V_ADP_STATESAVE, ENODEV);
1421 if (size < sizeof(adp_state_t))
1424 ((adp_state_t *)p)->sig = V_STATE_SIG;
1425 buf = ((adp_state_t *)p)->regs;
1426 bzero(buf, V_MODE_PARAM_SIZE);
1430 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
1431 for (i = 0, j = 5; i < 4; i++) {
1433 buf[j++] = inb(TSREG);
1435 buf[9] = inb(MISC + 10); /* dot-clock */
1436 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
1438 for (i = 0, j = 10; i < 25; i++) { /* crtc */
1440 buf[j++] = inb(CRTC + 1);
1442 for (i = 0, j = 35; i < 20; i++) { /* attribute ctrl */
1443 inb(CRTC + 6); /* reset flip-flop */
1445 buf[j++] = inb(ATC + 1);
1447 for (i = 0, j = 55; i < 9; i++) { /* graph data ctrl */
1449 buf[j++] = inb(GDCREG);
1451 inb(CRTC + 6); /* reset flip-flop */
1452 outb(ATC, 0x20); /* enable palette */
1457 if (vga_get_info(adp, adp->va_mode, &info) == 0) {
1458 if (info.vi_flags & V_INFO_GRAPHICS) {
1459 buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
1460 buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
1462 buf[0] = info.vi_width; /* COLS */
1463 buf[1] = info.vi_height - 1; /* ROWS */
1465 buf[2] = info.vi_cheight; /* POINTS */
1467 /* XXX: shouldn't be happening... */
1468 kprintf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
1469 adp->va_unit, adp->va_name);
1472 buf[0] = readb(BIOS_PADDRTOVADDR(0x44a)); /* COLS */
1473 buf[1] = readb(BIOS_PADDRTOVADDR(0x484)); /* ROWS */
1474 buf[2] = readb(BIOS_PADDRTOVADDR(0x485)); /* POINTS */
1475 buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
1476 buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
1484 * Set video registers at once.
1485 * NOTE: this function only updates the standard VGA registers.
1486 * any extra/extended registers of SVGA adapters are not changed.
1489 vga_load_state(video_adapter_t *adp, void *p)
1494 prologue(adp, V_ADP_STATELOAD, ENODEV);
1495 if (((adp_state_t *)p)->sig != V_STATE_SIG)
1498 buf = ((adp_state_t *)p)->regs;
1501 hexdump(buf, V_MODE_PARAM_SIZE, NULL, HD_OMIT_CHARS | HD_OMIT_COUNT);
1506 outb(TSIDX, 0x00); outb(TSREG, 0x01); /* stop sequencer */
1507 for (i = 0; i < 4; ++i) { /* program sequencer */
1509 outb(TSREG, buf[i + 5]);
1511 outb(MISC, buf[9]); /* set dot-clock */
1512 outb(TSIDX, 0x00); outb(TSREG, 0x03); /* start sequencer */
1514 outb(CRTC + 1, inb(CRTC + 1) & 0x7F);
1515 for (i = 0; i < 25; ++i) { /* program crtc */
1517 outb(CRTC + 1, buf[i + 10]);
1519 inb(CRTC + 6); /* reset flip-flop */
1520 for (i = 0; i < 20; ++i) { /* program attribute ctrl */
1522 outb(ATC, buf[i + 35]);
1524 for (i = 0; i < 9; ++i) { /* program graph data ctrl */
1526 outb(GDCREG, buf[i + 55]);
1528 inb(CRTC + 6); /* reset flip-flop */
1529 outb(ATC, 0x20); /* enable palette */
1531 #if 0 /* XXX a temporary workaround for kernel panic */
1532 #ifndef VGA_NO_MODE_CHANGE
1533 if (adp->va_unit == V_ADP_PRIMARY) {
1534 writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]); /* COLS */
1535 writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
1536 writeb(BIOS_PADDRTOVADDR(0x485), buf[2]); /* POINTS */
1538 writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
1539 writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
1542 #endif /* !VGA_NO_MODE_CHANGE */
1551 * Change the origin (window mapping) of the banked frame buffer.
1554 vga_set_origin(video_adapter_t *adp, off_t offset)
1557 * The standard video modes do not require window mapping;
1558 * always return error.
1565 * Read the position of the hardware text cursor.
1568 vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
1575 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
1580 off = inb(CRTC + 1);
1582 off = (off << 8) | inb(CRTC + 1);
1585 *row = off / adp->va_info.vi_width;
1586 *col = off % adp->va_info.vi_width;
1593 * Move the hardware text cursor. If col and row are both -1,
1594 * the cursor won't be shown.
1597 vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
1604 if ((col == -1) && (row == -1)) {
1607 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
1609 off = row*adp->va_info.vi_width + col;
1614 outb(CRTC + 1, off >> 8);
1616 outb(CRTC + 1, off & 0x00ff);
1623 * set_hw_cursor_shape():
1624 * Change the shape of the hardware text cursor. If the height is
1625 * zero or negative, the cursor won't be shown.
1628 vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
1629 int celsize, int blink)
1636 /* make the cursor invisible */
1643 outb(CRTC + 1, celsize - base - height);
1645 outb(CRTC + 1, celsize - base - 1);
1654 * Put the display in power save/power off mode.
1657 vga_blank_display(video_adapter_t *adp, int mode)
1663 case V_DISPLAY_SUSPEND:
1664 case V_DISPLAY_STAND_BY:
1668 outb(TSREG, val | 0x20);
1670 val = inb(CRTC + 1);
1671 outb(CRTC + 1, val & ~0x80);
1677 outb(TSREG, val | 0x20);
1683 outb(TSREG, val & 0xDF);
1685 val = inb(CRTC + 1);
1686 outb(CRTC + 1, val | 0x80);
1696 * Mmap frame buffer.
1699 vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
1701 if (adp->va_info.vi_flags & V_INFO_LINEAR)
1705 kprintf("vga_mmap_buf(): window:0x%x, offset:%p\n",
1706 adp->va_info.vi_window, (void *)offset);
1709 /* XXX: is this correct? */
1710 if (offset > adp->va_window_size - PAGE_SIZE)
1713 #if defined(__x86_64__)
1714 return x86_64_btop(adp->va_info.vi_window + offset);
1716 #error "vga_mmap_buf needs to return something"
1720 #ifndef VGA_NO_MODE_CHANGE
1723 planar_fill(video_adapter_t *adp, int val)
1726 int at; /* position in the frame buffer */
1729 lwkt_gettoken(&tty_token);
1730 outw(GDCIDX, 0x0005); /* read mode 0, write mode 0 */
1731 outw(GDCIDX, 0x0003); /* data rotate/function select */
1732 outw(GDCIDX, 0x0f01); /* set/reset enable */
1733 outw(GDCIDX, 0xff08); /* bit mask */
1734 outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
1736 length = adp->va_line_width*adp->va_info.vi_height;
1737 while (length > 0) {
1738 l = imin(length, adp->va_window_size);
1739 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1740 bzero_io(adp->va_window, l);
1744 outw(GDCIDX, 0x0000); /* set/reset */
1745 outw(GDCIDX, 0x0001); /* set/reset enable */
1746 lwkt_reltoken(&tty_token);
1750 packed_fill(video_adapter_t *adp, int val)
1753 int at; /* position in the frame buffer */
1756 lwkt_gettoken(&tty_token);
1758 length = adp->va_line_width*adp->va_info.vi_height;
1759 while (length > 0) {
1760 l = imin(length, adp->va_window_size);
1761 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1762 fill_io(val, adp->va_window, l);
1766 lwkt_reltoken(&tty_token);
1770 direct_fill(video_adapter_t *adp, int val)
1773 int at; /* position in the frame buffer */
1776 lwkt_gettoken(&tty_token);
1778 length = adp->va_line_width*adp->va_info.vi_height;
1779 while (length > 0) {
1780 l = imin(length, adp->va_window_size);
1781 (*vidsw[adp->va_index]->set_win_org)(adp, at);
1782 switch (adp->va_info.vi_pixel_size) {
1783 case sizeof(u_int16_t):
1784 fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
1789 case sizeof(u_int32_t):
1790 filll_io(val, adp->va_window, l/sizeof(u_int32_t));
1796 lwkt_reltoken(&tty_token);
1800 vga_clear(video_adapter_t *adp)
1802 switch (adp->va_info.vi_mem_model) {
1803 case V_INFO_MM_TEXT:
1804 /* do nothing? XXX */
1806 case V_INFO_MM_PLANAR:
1807 planar_fill(adp, 0);
1809 case V_INFO_MM_PACKED:
1810 packed_fill(adp, 0);
1812 case V_INFO_MM_DIRECT:
1813 direct_fill(adp, 0);
1820 vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
1826 vga_bitblt(video_adapter_t *adp,...)
1832 #endif /* !VGA_NO_MODE_CHANGE */
1835 get_palette(video_adapter_t *adp, int base, int count,
1836 u_char *red, u_char *green, u_char *blue, u_char *trans)
1842 if (count < 0 || base < 0 || count > 256 || base > 256 ||
1846 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1849 if (vga_save_palette2(adp, base, count, r, g, b)) {
1853 copyout(r, red, count);
1854 copyout(g, green, count);
1855 copyout(b, blue, count);
1856 if (trans != NULL) {
1858 copyout(r, trans, count);
1866 set_palette(video_adapter_t *adp, int base, int count,
1867 u_char *red, u_char *green, u_char *blue, u_char *trans)
1874 if (count < 0 || base < 0 || count > 256 || base > 256 ||
1878 r = kmalloc(count*3, M_DEVBUF, M_WAITOK);
1881 err = copyin(red, r, count);
1883 err = copyin(green, g, count);
1885 err = copyin(blue, b, count);
1887 err = vga_load_palette2(adp, base, count, r, g, b);
1890 return (err ? ENODEV : 0);
1894 vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
1897 case FBIO_GETWINORG: /* get frame buffer window origin */
1901 case FBIO_SETWINORG: /* set frame buffer window origin */
1904 case FBIO_SETDISPSTART: /* set display start address */
1905 return (set_display_start(adp,
1906 ((video_display_start_t *)arg)->x,
1907 ((video_display_start_t *)arg)->y)
1910 case FBIO_SETLINEWIDTH: /* set scan line length in pixel */
1911 return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
1913 case FBIO_GETPALETTE: /* get color palette */
1914 return get_palette(adp, ((video_color_palette_t *)arg)->index,
1915 ((video_color_palette_t *)arg)->count,
1916 ((video_color_palette_t *)arg)->red,
1917 ((video_color_palette_t *)arg)->green,
1918 ((video_color_palette_t *)arg)->blue,
1919 ((video_color_palette_t *)arg)->transparent);
1921 case FBIO_SETPALETTE: /* set color palette */
1922 return set_palette(adp, ((video_color_palette_t *)arg)->index,
1923 ((video_color_palette_t *)arg)->count,
1924 ((video_color_palette_t *)arg)->red,
1925 ((video_color_palette_t *)arg)->green,
1926 ((video_color_palette_t *)arg)->blue,
1927 ((video_color_palette_t *)arg)->transparent);
1929 case FBIOGTYPE: /* get frame buffer type info. */
1930 ((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
1931 ((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
1932 ((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
1933 ((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
1934 if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
1935 ((struct fbtype *)arg)->fb_cmsize = 0;
1937 ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
1938 ((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
1941 case FBIOGETCMAP: /* get color palette */
1942 return get_palette(adp, ((struct fbcmap *)arg)->index,
1943 ((struct fbcmap *)arg)->count,
1944 ((struct fbcmap *)arg)->red,
1945 ((struct fbcmap *)arg)->green,
1946 ((struct fbcmap *)arg)->blue, NULL);
1948 case FBIOPUTCMAP: /* set color palette */
1949 return set_palette(adp, ((struct fbcmap *)arg)->index,
1950 ((struct fbcmap *)arg)->count,
1951 ((struct fbcmap *)arg)->red,
1952 ((struct fbcmap *)arg)->green,
1953 ((struct fbcmap *)arg)->blue, NULL);
1956 return fb_commonioctl(adp, cmd, arg);
1962 * Print some information about the video adapter and video modes,
1963 * with requested level of details.
1966 vga_diag(video_adapter_t *adp, int level)
1978 #ifndef VGA_NO_MODE_CHANGE
1979 kprintf("vga: DCC code:0x%02x\n",
1980 readb(BIOS_PADDRTOVADDR(0x488)));
1981 kprintf("vga: CRTC:0x%x, video option:0x%02x, ",
1982 readw(BIOS_PADDRTOVADDR(0x463)),
1983 readb(BIOS_PADDRTOVADDR(0x487)));
1984 kprintf("rows:%d, cols:%d, font height:%d\n",
1985 readb(BIOS_PADDRTOVADDR(0x44a)),
1986 readb(BIOS_PADDRTOVADDR(0x484)) + 1,
1987 readb(BIOS_PADDRTOVADDR(0x485)));
1988 kprintf("vga: param table:%p\n", video_mode_ptr);
1989 kprintf("vga: rows_offset:%d\n", rows_offset);
1991 #endif /* FB_DEBUG > 1 */
1993 fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
1996 if (adp->va_flags & V_ADP_MODECHANGE) {
1997 for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
1998 if (bios_vmode[i].vi_mode == NA)
2000 if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
2002 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
2005 vga_get_info(adp, adp->va_initial_mode, &info); /* shouldn't fail */
2006 fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
2008 #endif /* FB_DEBUG > 1 */
2010 #ifndef VGA_NO_MODE_CHANGE
2011 if (video_mode_ptr == NULL)
2012 kprintf("vga%d: %s: WARNING: video mode switching is not "
2013 "fully supported on this adapter\n",
2014 adp->va_unit, adp->va_name);
2019 kprintf("VGA parameters upon power-up\n");
2020 hexdump(adpstate.regs, sizeof(adpstate.regs), NULL,
2021 HD_OMIT_CHARS | HD_OMIT_COUNT);
2023 mp = get_mode_param(adp->va_initial_mode);
2024 if (mp == NULL) /* this shouldn't be happening */
2026 kprintf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
2027 hexdump(adpstate2.regs, sizeof(adpstate2.regs), NULL,
2028 HD_OMIT_CHARS | HD_OMIT_COUNT);
2029 kprintf("VGA parameters to be used for mode %d\n", adp->va_initial_mode);
2030 hexdump(mp, V_MODE_PARAM_SIZE, NULL, HD_OMIT_CHARS | HD_OMIT_COUNT);