File:  [DragonFly] / src / sys / dev / video / fb / vga.c
Revision 1.6: download - view: text, annotated - select for diffs
Thu Aug 7 21:17:16 2003 UTC (11 years, 4 months ago) by dillon
Branches: MAIN
CVS tags: HEAD
kernel tree reorganization stage 1: Major cvs repository work (not logged as
commits) plus a major reworking of the #include's to accomodate the
relocations.

    * CVS repository files manually moved.  Old directories left intact
      and empty (temporary).

    * Reorganize all filesystems into vfs/, most devices into dev/,
      sub-divide devices by function.

    * Begin to move device-specific architecture files to the device
      subdirs rather then throwing them all into, e.g. i386/include

    * Reorganize files related to system busses, placing the related code
      in a new bus/ directory.  Also move cam to bus/cam though this may
      not have been the best idea in retrospect.

    * Reorganize emulation code and place it in a new emulation/ directory.

    * Remove the -I- compiler option in order to allow #include file
      localization, rename all config generated X.h files to use_X.h to
      clean up the conflicts.

    * Remove /usr/src/include (or /usr/include) dependancies during the
      kernel build, beyond what is normally needed to compile helper
      programs.

    * Make config create 'machine' softlinks for architecture specific
      directories outside of the standard <arch>/include.

    * Bump the config rev.

    WARNING! after this commit /usr/include and /usr/src/sys/compile/*
    should be regenerated from scratch.

    1: /*-
    2:  * Copyright (c) 1999 Kazutaka YOKOTA <yokota@zodiac.mech.utsunomiya-u.ac.jp>
    3:  * Copyright (c) 1992-1998 Søren Schmidt
    4:  * All rights reserved.
    5:  *
    6:  * Redistribution and use in source and binary forms, with or without
    7:  * modification, are permitted provided that the following conditions
    8:  * are met:
    9:  * 1. Redistributions of source code must retain the above copyright
   10:  *    notice, this list of conditions and the following disclaimer as
   11:  *    the first lines of this file unmodified.
   12:  * 2. Redistributions in binary form must reproduce the above copyright
   13:  *    notice, this list of conditions and the following disclaimer in the
   14:  *    documentation and/or other materials provided with the distribution.
   15:  * 3. The name of the author may not be used to endorse or promote products
   16:  *    derived from this software without specific prior written permission.
   17:  *
   18:  * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
   19:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21:  * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   22:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28:  *
   29:  * $FreeBSD: src/sys/dev/fb/vga.c,v 1.9.2.1 2001/08/11 02:58:44 yokota Exp $
   30:  * $DragonFly: src/sys/dev/video/fb/vga.c,v 1.6 2003/08/07 21:17:16 dillon Exp $
   31:  */
   32: 
   33: #include "opt_vga.h"
   34: #include "opt_fb.h"
   35: #include "opt_syscons.h"	/* should be removed in the future, XXX */
   36: 
   37: #include <sys/param.h>
   38: #include <sys/systm.h>
   39: #include <sys/kernel.h>
   40: #include <sys/conf.h>
   41: #include <sys/proc.h>
   42: #include <sys/fcntl.h>
   43: #include <sys/malloc.h>
   44: #include <sys/fbio.h>
   45: 
   46: #include <vm/vm.h>
   47: #include <vm/vm_param.h>
   48: #include <vm/pmap.h>
   49: 
   50: #include <machine/md_var.h>
   51: #include <machine/pc/bios.h>
   52: 
   53: #include "fbreg.h"
   54: #include "vgareg.h"
   55: 
   56: #include <bus/isa/isareg.h>
   57: 
   58: #ifndef VGA_DEBUG
   59: #define VGA_DEBUG		0
   60: #endif
   61: 
   62: int
   63: vga_probe_unit(int unit, video_adapter_t *buf, int flags)
   64: {
   65: 	video_adapter_t *adp;
   66: 	video_switch_t *sw;
   67: 	int error;
   68: 
   69: 	sw = vid_get_switch(VGA_DRIVER_NAME);
   70: 	if (sw == NULL)
   71: 		return 0;
   72: 	error = (*sw->probe)(unit, &adp, NULL, flags);
   73: 	if (error)
   74: 		return error;
   75: 	bcopy(adp, buf, sizeof(*buf));
   76: 	return 0;
   77: }
   78: 
   79: int
   80: vga_attach_unit(int unit, vga_softc_t *sc, int flags)
   81: {
   82: 	video_switch_t *sw;
   83: 	int error;
   84: 
   85: 	sw = vid_get_switch(VGA_DRIVER_NAME);
   86: 	if (sw == NULL)
   87: 		return ENXIO;
   88: 
   89: 	error = (*sw->probe)(unit, &sc->adp, NULL, flags);
   90: 	if (error)
   91: 		return error;
   92: 	return (*sw->init)(unit, sc->adp, flags);
   93: }
   94: 
   95: /* cdev driver functions */
   96: 
   97: #ifdef FB_INSTALL_CDEV
   98: 
   99: int
  100: vga_open(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
  101: {
  102: 	if (sc == NULL)
  103: 		return ENXIO;
  104: 	if (mode & (O_CREAT | O_APPEND | O_TRUNC))
  105: 		return ENODEV;
  106: 
  107: 	return genfbopen(&sc->gensc, sc->adp, flag, mode, td);
  108: }
  109: 
  110: int
  111: vga_close(dev_t dev, vga_softc_t *sc, int flag, int mode, struct thread *td)
  112: {
  113: 	return genfbclose(&sc->gensc, sc->adp, flag, mode, td);
  114: }
  115: 
  116: int
  117: vga_read(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
  118: {
  119: 	return genfbread(&sc->gensc, sc->adp, uio, flag);
  120: }
  121: 
  122: int
  123: vga_write(dev_t dev, vga_softc_t *sc, struct uio *uio, int flag)
  124: {
  125: 	return genfbread(&sc->gensc, sc->adp, uio, flag);
  126: }
  127: 
  128: int
  129: vga_ioctl(dev_t dev, vga_softc_t *sc, u_long cmd, caddr_t arg, int flag,
  130: 	  struct thread *td)
  131: {
  132: 	return genfbioctl(&sc->gensc, sc->adp, cmd, arg, flag, td);
  133: }
  134: 
  135: int
  136: vga_mmap(dev_t dev, vga_softc_t *sc, vm_offset_t offset, int prot)
  137: {
  138: 	return genfbmmap(&sc->gensc, sc->adp, offset, prot);
  139: }
  140: 
  141: #endif /* FB_INSTALL_CDEV */
  142: 
  143: /* LOW-LEVEL */
  144: 
  145: #include <machine/clock.h>
  146: #include <machine/pc/vesa.h>
  147: 
  148: #define probe_done(adp)		((adp)->va_flags & V_ADP_PROBED)
  149: #define init_done(adp)		((adp)->va_flags & V_ADP_INITIALIZED)
  150: #define config_done(adp)	((adp)->va_flags & V_ADP_REGISTERED)
  151: 
  152: /* for compatibility with old kernel options */
  153: #ifdef SC_ALT_SEQACCESS
  154: #undef SC_ALT_SEQACCESS
  155: #undef VGA_ALT_SEQACCESS
  156: #define VGA_ALT_SEQACCESS	1
  157: #endif
  158: 
  159: #ifdef SLOW_VGA
  160: #undef SLOW_VGA
  161: #undef VGA_SLOW_IOACCESS
  162: #define VGA_SLOW_IOACCESS	1
  163: #endif
  164: 
  165: /* architecture dependent option */
  166: #ifdef __alpha__
  167: #define VGA_NO_BIOS		1
  168: #endif
  169: 
  170: /* this should really be in `rtc.h' */
  171: #define RTC_EQUIPMENT           0x14
  172: 
  173: /* various sizes */
  174: #define V_MODE_MAP_SIZE		(M_VGA_CG320 + 1)
  175: #define V_MODE_PARAM_SIZE	64
  176: 
  177: /* video adapter state buffer */
  178: struct adp_state {
  179:     int			sig;
  180: #define V_STATE_SIG	0x736f6962
  181:     u_char		regs[V_MODE_PARAM_SIZE];
  182: };
  183: typedef struct adp_state adp_state_t;
  184: 
  185: /* video adapter information */
  186: #define DCC_MONO	0
  187: #define DCC_CGA40	1
  188: #define DCC_CGA80	2
  189: #define DCC_EGAMONO	3
  190: #define DCC_EGA40	4
  191: #define DCC_EGA80	5
  192: 
  193: /* 
  194:  * NOTE: `va_window' should have a virtual address, but is initialized
  195:  * with a physical address in the following table, as verify_adapter()
  196:  * will perform address conversion at run-time.
  197:  */
  198: static video_adapter_t adapter_init_value[] = {
  199:     /* DCC_MONO */
  200:     { 0, KD_MONO, "mda", 0, 0, 0, 	    IO_MDA, IO_MDASIZE, MONO_CRTC,
  201:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 
  202:       0, 0, 0, 0, 7, 0, },
  203:     /* DCC_CGA40 */
  204:     { 0, KD_CGA,  "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
  205:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 
  206:       0, 0, 0, 0, 3, 0, },
  207:     /* DCC_CGA80 */
  208:     { 0, KD_CGA,  "cga", 0, 0, V_ADP_COLOR, IO_CGA, IO_CGASIZE, COLOR_CRTC,
  209:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 
  210:       0, 0, 0, 0, 3, 0, },
  211:     /* DCC_EGAMONO */
  212:     { 0, KD_EGA,  "ega", 0, 0, 0,	    IO_MDA, 48,	  MONO_CRTC,
  213:       EGA_BUF_BASE, EGA_BUF_SIZE, MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 
  214:       0, 0, 0, 0, 7, 0, },
  215:     /* DCC_EGA40 */
  216:     { 0, KD_EGA,  "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48,	  COLOR_CRTC,
  217:       EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 
  218:       0, 0, 0, 0, 3, 0, },
  219:     /* DCC_EGA80 */
  220:     { 0, KD_EGA,  "ega", 0, 0, V_ADP_COLOR, IO_MDA, 48,	  COLOR_CRTC,
  221:       EGA_BUF_BASE, EGA_BUF_SIZE, CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 
  222:       0, 0, 0, 0, 3, 0, },
  223: };
  224: 
  225: static video_adapter_t	biosadapter[2];
  226: static int		biosadapters = 0;
  227: 
  228: /* video driver declarations */
  229: static int			vga_configure(int flags);
  230:        int			(*vga_sub_configure)(int flags);
  231: #if 0
  232: static int			vga_nop(void);
  233: #endif
  234: static int			vga_error(void);
  235: static vi_probe_t		vga_probe;
  236: static vi_init_t		vga_init;
  237: static vi_get_info_t		vga_get_info;
  238: static vi_query_mode_t		vga_query_mode;
  239: static vi_set_mode_t		vga_set_mode;
  240: static vi_save_font_t		vga_save_font;
  241: static vi_load_font_t		vga_load_font;
  242: static vi_show_font_t		vga_show_font;
  243: static vi_save_palette_t	vga_save_palette;
  244: static vi_load_palette_t	vga_load_palette;
  245: static vi_set_border_t		vga_set_border;
  246: static vi_save_state_t		vga_save_state;
  247: static vi_load_state_t		vga_load_state;
  248: static vi_set_win_org_t		vga_set_origin;
  249: static vi_read_hw_cursor_t	vga_read_hw_cursor;
  250: static vi_set_hw_cursor_t	vga_set_hw_cursor;
  251: static vi_set_hw_cursor_shape_t	vga_set_hw_cursor_shape;
  252: static vi_blank_display_t	vga_blank_display;
  253: static vi_mmap_t		vga_mmap_buf;
  254: static vi_ioctl_t		vga_dev_ioctl;
  255: #ifndef VGA_NO_MODE_CHANGE
  256: static vi_clear_t		vga_clear;
  257: static vi_fill_rect_t		vga_fill_rect;
  258: static vi_bitblt_t		vga_bitblt;
  259: #else /* VGA_NO_MODE_CHANGE */
  260: #define vga_clear		(vi_clear_t *)vga_error
  261: #define vga_fill_rect		(vi_fill_rect_t *)vga_error
  262: #define vga_bitblt		(vi_bitblt_t *)vga_error
  263: #endif
  264: static vi_diag_t		vga_diag;
  265: 
  266: static video_switch_t vgavidsw = {
  267: 	vga_probe,
  268: 	vga_init,
  269: 	vga_get_info,
  270: 	vga_query_mode,	
  271: 	vga_set_mode,
  272: 	vga_save_font,
  273: 	vga_load_font,
  274: 	vga_show_font,
  275: 	vga_save_palette,
  276: 	vga_load_palette,
  277: 	vga_set_border,
  278: 	vga_save_state,
  279: 	vga_load_state,
  280: 	vga_set_origin,
  281: 	vga_read_hw_cursor,
  282: 	vga_set_hw_cursor,
  283: 	vga_set_hw_cursor_shape,
  284: 	vga_blank_display,
  285: 	vga_mmap_buf,
  286: 	vga_dev_ioctl,
  287: 	vga_clear,
  288: 	vga_fill_rect,
  289: 	vga_bitblt,
  290: 	vga_error,
  291: 	vga_error,
  292: 	vga_diag,
  293: };
  294: 
  295: VIDEO_DRIVER(mda, vgavidsw, NULL);
  296: VIDEO_DRIVER(cga, vgavidsw, NULL);
  297: VIDEO_DRIVER(ega, vgavidsw, NULL);
  298: VIDEO_DRIVER(vga, vgavidsw, vga_configure);
  299: 
  300: /* VGA BIOS standard video modes */
  301: #define EOT		(-1)
  302: #define NA		(-2)
  303: 
  304: static video_info_t bios_vmode[] = {
  305:     /* CGA */
  306:     { M_B40x25,     V_INFO_COLOR, 40, 25, 8,  8, 2, 1,
  307:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  308:     { M_C40x25,     V_INFO_COLOR, 40, 25, 8,  8, 4, 1,
  309:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  310:     { M_B80x25,     V_INFO_COLOR, 80, 25, 8,  8, 2, 1,
  311:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  312:     { M_C80x25,     V_INFO_COLOR, 80, 25, 8,  8, 4, 1,
  313:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  314:     /* EGA */
  315:     { M_ENH_B40x25, V_INFO_COLOR, 40, 25, 8, 14, 2, 1,
  316:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  317:     { M_ENH_C40x25, V_INFO_COLOR, 40, 25, 8, 14, 4, 1,
  318:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  319:     { M_ENH_B80x25, V_INFO_COLOR, 80, 25, 8, 14, 2, 1,
  320:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  321:     { M_ENH_C80x25, V_INFO_COLOR, 80, 25, 8, 14, 4, 1,
  322:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  323:     /* VGA */
  324:     { M_VGA_C40x25, V_INFO_COLOR, 40, 25, 8, 16, 4, 1,
  325:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  326:     { M_VGA_M80x25, 0,            80, 25, 8, 16, 2, 1,
  327:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  328:     { M_VGA_C80x25, V_INFO_COLOR, 80, 25, 8, 16, 4, 1,
  329:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  330:     /* MDA */
  331:     { M_EGAMONO80x25, 0,          80, 25, 8, 14, 2, 1,
  332:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  333:     /* EGA */
  334:     { M_ENH_B80x43, 0,            80, 43, 8,  8, 2, 1,
  335:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  336:     { M_ENH_C80x43, V_INFO_COLOR, 80, 43, 8,  8, 4, 1,
  337:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  338:     /* VGA */
  339:     { M_VGA_M80x30, 0,            80, 30, 8, 16, 2, 1,
  340:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  341:     { M_VGA_C80x30, V_INFO_COLOR, 80, 30, 8, 16, 4, 1,
  342:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  343:     { M_VGA_M80x50, 0,            80, 50, 8,  8, 2, 1,
  344:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  345:     { M_VGA_C80x50, V_INFO_COLOR, 80, 50, 8,  8, 4, 1,
  346:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  347:     { M_VGA_M80x60, 0,            80, 60, 8,  8, 2, 1,
  348:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  349:     { M_VGA_C80x60, V_INFO_COLOR, 80, 60, 8,  8, 4, 1,
  350:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  351: 
  352: #ifndef VGA_NO_MODE_CHANGE
  353: 
  354: #ifdef VGA_WIDTH90
  355:     { M_VGA_M90x25, 0,            90, 25, 8, 16, 2, 1,
  356:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  357:     { M_VGA_C90x25, V_INFO_COLOR, 90, 25, 8, 16, 4, 1,
  358:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  359:     { M_VGA_M90x30, 0,            90, 30, 8, 16, 2, 1,
  360:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  361:     { M_VGA_C90x30, V_INFO_COLOR, 90, 30, 8, 16, 4, 1,
  362:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  363:     { M_VGA_M90x43, 0,            90, 43, 8,  8, 2, 1,
  364:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  365:     { M_VGA_C90x43, V_INFO_COLOR, 90, 43, 8,  8, 4, 1,
  366:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  367:     { M_VGA_M90x50, 0,            90, 50, 8,  8, 2, 1,
  368:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  369:     { M_VGA_C90x50, V_INFO_COLOR, 90, 50, 8,  8, 4, 1,
  370:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  371:     { M_VGA_M90x60, 0,            90, 60, 8,  8, 2, 1,
  372:       MDA_BUF_BASE, MDA_BUF_SIZE, MDA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  373:     { M_VGA_C90x60, V_INFO_COLOR, 90, 60, 8,  8, 4, 1,
  374:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_TEXT },
  375: #endif /* VGA_WIDTH90 */
  376: 
  377:     /* CGA */
  378:     { M_BG320,      V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8,  8, 2, 1,
  379:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
  380:     { M_CG320,      V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8,  8, 2, 1,
  381:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
  382:     { M_BG640,      V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8,  8, 1, 1,
  383:       CGA_BUF_BASE, CGA_BUF_SIZE, CGA_BUF_SIZE, 0, 0, V_INFO_MM_CGA },
  384:     /* EGA */
  385:     { M_CG320_D,    V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8,  8, 4, 4,
  386:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
  387:       V_INFO_MM_PLANAR },
  388:     { M_CG640_E,    V_INFO_COLOR | V_INFO_GRAPHICS, 640, 200, 8,  8, 4, 4,
  389:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
  390:       V_INFO_MM_PLANAR },
  391:     { M_EGAMONOAPA, V_INFO_GRAPHICS,                640, 350, 8, 14, 4, 4,
  392:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, 64*1024, 0, 0 ,
  393:       V_INFO_MM_PLANAR },
  394:     { M_ENHMONOAPA2,V_INFO_GRAPHICS,                640, 350, 8, 14, 4, 4,
  395:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
  396:       V_INFO_MM_PLANAR },
  397:     { M_CG640x350,  V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 2, 2,
  398:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
  399:       V_INFO_MM_PLANAR },
  400:     { M_ENH_CG640,  V_INFO_COLOR | V_INFO_GRAPHICS, 640, 350, 8, 14, 4, 4,
  401:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
  402:       V_INFO_MM_PLANAR },
  403:     /* VGA */
  404:     { M_BG640x480,  V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
  405:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
  406:       V_INFO_MM_PLANAR },
  407:     { M_CG640x480,  V_INFO_COLOR | V_INFO_GRAPHICS, 640, 480, 8, 16, 4, 4,
  408:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0 ,
  409:       V_INFO_MM_PLANAR },
  410:     { M_VGA_CG320,  V_INFO_COLOR | V_INFO_GRAPHICS, 320, 200, 8,  8, 8, 1,
  411:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
  412:       V_INFO_MM_PACKED, 1 },
  413:     { M_VGA_MODEX,  V_INFO_COLOR | V_INFO_GRAPHICS, 320, 240, 8,  8, 8, 4,
  414:       GRAPHICS_BUF_BASE, GRAPHICS_BUF_SIZE, GRAPHICS_BUF_SIZE, 0, 0,
  415:       V_INFO_MM_VGAX, 1 },
  416: #endif /* VGA_NO_MODE_CHANGE */
  417: 
  418:     { EOT },
  419: };
  420: 
  421: static int		vga_init_done = FALSE;
  422: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  423: static u_char		*video_mode_ptr = NULL;		/* EGA/VGA */
  424: static u_char		*video_mode_ptr2 = NULL;	/* CGA/MDA */
  425: #endif
  426: static u_char		*mode_map[V_MODE_MAP_SIZE];
  427: static adp_state_t	adpstate;
  428: static adp_state_t	adpstate2;
  429: static int		rows_offset = 1;
  430: 
  431: /* local macros and functions */
  432: #define BIOS_SADDRTOLADDR(p) ((((p) & 0xffff0000) >> 12) + ((p) & 0x0000ffff))
  433: 
  434: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  435: static void map_mode_table(u_char *map[], u_char *table, int max);
  436: #endif
  437: static void clear_mode_map(video_adapter_t *adp, u_char *map[], int max,
  438: 			   int color);
  439: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  440: static int map_mode_num(int mode);
  441: #endif
  442: static int map_gen_mode_num(int type, int color, int mode);
  443: static int map_bios_mode_num(int type, int color, int bios_mode);
  444: static u_char *get_mode_param(int mode);
  445: #ifndef VGA_NO_BIOS
  446: static void fill_adapter_param(int code, video_adapter_t *adp);
  447: #endif
  448: static int verify_adapter(video_adapter_t *adp);
  449: static void update_adapter_info(video_adapter_t *adp, video_info_t *info);
  450: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  451: #define COMP_IDENTICAL	0
  452: #define COMP_SIMILAR	1
  453: #define COMP_DIFFERENT	2
  454: static int comp_adpregs(u_char *buf1, u_char *buf2);
  455: #endif
  456: static int probe_adapters(void);
  457: static int set_line_length(video_adapter_t *adp, int pixel);
  458: static int set_display_start(video_adapter_t *adp, int x, int y);
  459: static void filll_io(int val, vm_offset_t d, size_t size);
  460: 
  461: #ifndef VGA_NO_MODE_CHANGE
  462: #ifdef VGA_WIDTH90
  463: static void set_width90(adp_state_t *params);
  464: #endif
  465: #endif /* !VGA_NO_MODE_CHANGE */
  466: 
  467: #ifndef VGA_NO_FONT_LOADING
  468: #define PARAM_BUFSIZE	6
  469: static void set_font_mode(video_adapter_t *adp, u_char *buf);
  470: static void set_normal_mode(video_adapter_t *adp, u_char *buf);
  471: #endif
  472: 
  473: #ifndef VGA_NO_MODE_CHANGE
  474: static void planar_fill(video_adapter_t *adp, int val);
  475: static void packed_fill(video_adapter_t *adp, int val);
  476: static void direct_fill(video_adapter_t *adp, int val);
  477: #ifdef notyet
  478: static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y,
  479: 			     int cx, int cy);
  480: static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y,
  481: 			     int cx, int cy);
  482: static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y,
  483: 			       int cx, int cy);
  484: static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y,
  485: 			       int cx, int cy);
  486: static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y,
  487: 			       int cx, int cy);
  488: #endif /* notyet */
  489: #endif /* !VGA_NO_MODE_CHANGE */
  490: 
  491: static void dump_buffer(u_char *buf, size_t len);
  492: 
  493: #define	ISMAPPED(pa, width)				\
  494: 	(((pa) <= (u_long)0x1000 - (width)) 		\
  495: 	 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
  496: 
  497: #define	prologue(adp, flag, err)			\
  498: 	if (!vga_init_done || !((adp)->va_flags & (flag)))	\
  499: 	    return (err)
  500: 
  501: /* a backdoor for the console driver */
  502: static int
  503: vga_configure(int flags)
  504: {
  505:     int i;
  506: 
  507:     probe_adapters();
  508:     for (i = 0; i < biosadapters; ++i) {
  509: 	if (!probe_done(&biosadapter[i]))
  510: 	    continue;
  511: 	biosadapter[i].va_flags |= V_ADP_INITIALIZED;
  512: 	if (!config_done(&biosadapter[i])) {
  513: 	    if (vid_register(&biosadapter[i]) < 0)
  514: 		continue;
  515: 	    biosadapter[i].va_flags |= V_ADP_REGISTERED;
  516: 	}
  517:     }
  518:     if (vga_sub_configure != NULL)
  519: 	(*vga_sub_configure)(flags);
  520: 
  521:     return biosadapters;
  522: }
  523: 
  524: /* local subroutines */
  525: 
  526: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  527: /* construct the mode parameter map */
  528: static void
  529: map_mode_table(u_char *map[], u_char *table, int max)
  530: {
  531:     int i;
  532: 
  533:     for(i = 0; i < max; ++i)
  534: 	map[i] = table + i*V_MODE_PARAM_SIZE;
  535:     for(; i < V_MODE_MAP_SIZE; ++i)
  536: 	map[i] = NULL;
  537: }
  538: #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
  539: 
  540: static void
  541: clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
  542: {
  543:     video_info_t info;
  544:     int i;
  545: 
  546:     /*
  547:      * NOTE: we don't touch `bios_vmode[]' because it is shared
  548:      * by all adapters.
  549:      */
  550:     for(i = 0; i < max; ++i) {
  551: 	if (vga_get_info(adp, i, &info))
  552: 	    continue;
  553: 	if ((info.vi_flags & V_INFO_COLOR) != color)
  554: 	    map[i] = NULL;
  555:     }
  556: }
  557: 
  558: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  559: /* map the non-standard video mode to a known mode number */
  560: static int
  561: map_mode_num(int mode)
  562: {
  563:     static struct {
  564:         int from;
  565:         int to;
  566:     } mode_map[] = {
  567:         { M_ENH_B80x43, M_ENH_B80x25 },
  568:         { M_ENH_C80x43, M_ENH_C80x25 },
  569:         { M_VGA_M80x30, M_VGA_M80x25 },
  570:         { M_VGA_C80x30, M_VGA_C80x25 },
  571:         { M_VGA_M80x50, M_VGA_M80x25 },
  572:         { M_VGA_C80x50, M_VGA_C80x25 },
  573:         { M_VGA_M80x60, M_VGA_M80x25 },
  574:         { M_VGA_C80x60, M_VGA_C80x25 },
  575: #ifdef VGA_WIDTH90
  576:         { M_VGA_M90x25, M_VGA_M80x25 },
  577:         { M_VGA_C90x25, M_VGA_C80x25 },
  578:         { M_VGA_M90x30, M_VGA_M80x25 },
  579:         { M_VGA_C90x30, M_VGA_C80x25 },
  580:         { M_VGA_M90x43, M_ENH_B80x25 },
  581:         { M_VGA_C90x43, M_ENH_C80x25 },
  582:         { M_VGA_M90x50, M_VGA_M80x25 },
  583:         { M_VGA_C90x50, M_VGA_C80x25 },
  584:         { M_VGA_M90x60, M_VGA_M80x25 },
  585:         { M_VGA_C90x60, M_VGA_C80x25 },
  586: #endif
  587:         { M_VGA_MODEX,  M_VGA_CG320 },
  588:     };
  589:     int i;
  590: 
  591:     for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
  592:         if (mode_map[i].from == mode)
  593:             return mode_map[i].to;
  594:     }
  595:     return mode;
  596: }
  597: #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
  598: 
  599: /* map a generic video mode to a known mode number */
  600: static int
  601: map_gen_mode_num(int type, int color, int mode)
  602: {
  603:     static struct {
  604: 	int from;
  605: 	int to_color;
  606: 	int to_mono;
  607:     } mode_map[] = {
  608: 	{ M_TEXT_80x30,	M_VGA_C80x30, M_VGA_M80x30, },
  609: 	{ M_TEXT_80x43,	M_ENH_C80x43, M_ENH_B80x43, },
  610: 	{ M_TEXT_80x50,	M_VGA_C80x50, M_VGA_M80x50, },
  611: 	{ M_TEXT_80x60,	M_VGA_C80x60, M_VGA_M80x60, },
  612:     };
  613:     int i;
  614: 
  615:     if (mode == M_TEXT_80x25) {
  616: 	switch (type) {
  617: 
  618: 	case KD_VGA:
  619: 	    if (color)
  620: 		return M_VGA_C80x25;
  621: 	    else
  622: 		return M_VGA_M80x25;
  623: 	    break;
  624: 
  625: 	case KD_EGA:
  626: 	    if (color)
  627: 		return M_ENH_C80x25;
  628: 	    else
  629: 		return M_EGAMONO80x25;
  630: 	    break;
  631: 
  632: 	case KD_CGA:
  633: 	    return M_C80x25;
  634: 
  635: 	case KD_MONO:
  636: 	case KD_HERCULES:
  637: 	    return M_EGAMONO80x25;	/* XXX: this name is confusing */
  638: 
  639:  	default:
  640: 	    return -1;
  641: 	}
  642:     }
  643: 
  644:     for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
  645:         if (mode_map[i].from == mode)
  646:             return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
  647:     }
  648:     return mode;
  649: }
  650: 
  651: /* turn the BIOS video number into our video mode number */
  652: static int
  653: map_bios_mode_num(int type, int color, int bios_mode)
  654: {
  655:     static int cga_modes[7] = {
  656: 	M_B40x25, M_C40x25,		/* 0, 1 */
  657: 	M_B80x25, M_C80x25,		/* 2, 3 */
  658: 	M_BG320, M_CG320,
  659: 	M_BG640,
  660:     };
  661:     static int ega_modes[17] = {
  662: 	M_ENH_B40x25, M_ENH_C40x25,	/* 0, 1 */
  663: 	M_ENH_B80x25, M_ENH_C80x25,	/* 2, 3 */
  664: 	M_BG320, M_CG320,
  665: 	M_BG640,
  666: 	M_EGAMONO80x25,			/* 7 */
  667: 	8, 9, 10, 11, 12,
  668: 	M_CG320_D,
  669: 	M_CG640_E,
  670: 	M_ENHMONOAPA2,			/* XXX: video momery > 64K */
  671: 	M_ENH_CG640,			/* XXX: video momery > 64K */
  672:     };
  673:     static int vga_modes[20] = {
  674: 	M_VGA_C40x25, M_VGA_C40x25,	/* 0, 1 */
  675: 	M_VGA_C80x25, M_VGA_C80x25,	/* 2, 3 */
  676: 	M_BG320, M_CG320,
  677: 	M_BG640,
  678: 	M_VGA_M80x25,			/* 7 */
  679: 	8, 9, 10, 11, 12,
  680: 	M_CG320_D,
  681: 	M_CG640_E,
  682: 	M_ENHMONOAPA2,
  683: 	M_ENH_CG640,
  684: 	M_BG640x480, M_CG640x480, 
  685: 	M_VGA_CG320,
  686:     };
  687: 
  688:     switch (type) {
  689: 
  690:     case KD_VGA:
  691: 	if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
  692: 	    return vga_modes[bios_mode];
  693: 	else if (color)
  694: 	    return M_VGA_C80x25;
  695: 	else
  696: 	    return M_VGA_M80x25;
  697: 	break;
  698: 
  699:     case KD_EGA:
  700: 	if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
  701: 	    return ega_modes[bios_mode];
  702: 	else if (color)
  703: 	    return M_ENH_C80x25;
  704: 	else
  705: 	    return M_EGAMONO80x25;
  706: 	break;
  707: 
  708:     case KD_CGA:
  709: 	if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
  710: 	    return cga_modes[bios_mode];
  711: 	else
  712: 	    return M_C80x25;
  713: 	break;
  714: 
  715:     case KD_MONO:
  716:     case KD_HERCULES:
  717: 	return M_EGAMONO80x25;		/* XXX: this name is confusing */
  718: 
  719:     default:
  720: 	break;
  721:     }
  722:     return -1;
  723: }
  724: 
  725: /* look up a parameter table entry */
  726: static u_char 
  727: *get_mode_param(int mode)
  728: {
  729: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  730:     if (mode >= V_MODE_MAP_SIZE)
  731: 	mode = map_mode_num(mode);
  732: #endif
  733:     if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
  734: 	return mode_map[mode];
  735:     else
  736: 	return NULL;
  737: }
  738: 
  739: #ifndef VGA_NO_BIOS
  740: static void
  741: fill_adapter_param(int code, video_adapter_t *adp)
  742: {
  743:     static struct {
  744: 	int primary;
  745: 	int secondary;
  746:     } dcc[] = {
  747: 	{ DCC_MONO, 			DCC_EGA40 /* CGA monitor */ },
  748: 	{ DCC_MONO, 			DCC_EGA80 /* CGA monitor */ },
  749: 	{ DCC_MONO, 			DCC_EGA80 },
  750: 	{ DCC_MONO, 			DCC_EGA80 },
  751: 	{ DCC_CGA40, 			DCC_EGAMONO },
  752: 	{ DCC_CGA80, 			DCC_EGAMONO },
  753: 	{ DCC_EGA40 /* CGA monitor */, 	DCC_MONO},
  754: 	{ DCC_EGA80 /* CGA monitor */, 	DCC_MONO},
  755: 	{ DCC_EGA80,			DCC_MONO },	
  756: 	{ DCC_EGA80, 			DCC_MONO },
  757: 	{ DCC_EGAMONO, 			DCC_CGA40 },
  758: 	{ DCC_EGAMONO, 			DCC_CGA80 },
  759:     };
  760: 
  761:     if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
  762: 	adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
  763: 	adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
  764:     } else {
  765: 	adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
  766: 	adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
  767:     }
  768: }
  769: #endif /* VGA_NO_BIOS */
  770: 
  771: static int
  772: verify_adapter(video_adapter_t *adp)
  773: {
  774:     vm_offset_t buf;
  775:     u_int16_t v;
  776: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  777:     u_int32_t p;
  778: #endif
  779: 
  780:     buf = BIOS_PADDRTOVADDR(adp->va_window);
  781:     v = readw(buf);
  782:     writew(buf, 0xA55A);
  783:     if (readw(buf) != 0xA55A)
  784: 	return ENXIO;
  785:     writew(buf, v);
  786: 
  787:     switch (adp->va_type) {
  788: 
  789:     case KD_EGA:
  790: 	outb(adp->va_crtc_addr, 7);
  791: 	if (inb(adp->va_crtc_addr) == 7) {
  792: 	    adp->va_type = KD_VGA;
  793: 	    adp->va_name = "vga";
  794: 	    adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
  795: 	}
  796: 	adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
  797: 	/* the color adapter may be in the 40x25 mode... XXX */
  798: 
  799: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  800: 	/* get the BIOS video mode pointer */
  801: 	p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
  802: 	p = BIOS_SADDRTOLADDR(p);
  803: 	if (ISMAPPED(p, sizeof(u_int32_t))) {
  804: 	    p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
  805: 	    p = BIOS_SADDRTOLADDR(p);
  806: 	    if (ISMAPPED(p, V_MODE_PARAM_SIZE))
  807: 		video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
  808: 	}
  809: #endif
  810: 	break;
  811: 
  812:     case KD_CGA:
  813: 	adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
  814: 	/* may be in the 40x25 mode... XXX */
  815: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  816: 	/* get the BIOS video mode pointer */
  817: 	p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
  818: 	p = BIOS_SADDRTOLADDR(p);
  819: 	video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
  820: #endif
  821: 	break;
  822: 
  823:     case KD_MONO:
  824: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  825: 	/* get the BIOS video mode pointer */
  826: 	p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
  827: 	p = BIOS_SADDRTOLADDR(p);
  828: 	video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
  829: #endif
  830: 	break;
  831:     }
  832: 
  833:     return 0;
  834: }
  835: 
  836: static void
  837: update_adapter_info(video_adapter_t *adp, video_info_t *info)
  838: {
  839:     adp->va_flags &= ~V_ADP_COLOR;
  840:     adp->va_flags |= 
  841: 	(info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
  842:     adp->va_crtc_addr =
  843: 	(adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
  844:     adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
  845:     adp->va_window_size = info->vi_window_size;
  846:     adp->va_window_gran = info->vi_window_gran;
  847:     adp->va_window_orig = 0;
  848:     /* XXX */
  849:     adp->va_buffer = info->vi_buffer;
  850:     adp->va_buffer_size = info->vi_buffer_size;
  851:     if (info->vi_mem_model == V_INFO_MM_VGAX) {
  852: 	adp->va_line_width = info->vi_width/2;
  853:     } else if (info->vi_flags & V_INFO_GRAPHICS) {
  854: 	switch (info->vi_depth/info->vi_planes) {
  855: 	case 1:
  856: 	    adp->va_line_width = info->vi_width/8;
  857: 	    break;
  858: 	case 2:
  859: 	    adp->va_line_width = info->vi_width/4;
  860: 	    break;
  861: 	case 4:
  862: 	    adp->va_line_width = info->vi_width/2;
  863: 	    break;
  864: 	case 8:
  865: 	default: /* shouldn't happen */
  866: 	    adp->va_line_width = info->vi_width;
  867: 	    break;
  868: 	}
  869:     } else {
  870: 	adp->va_line_width = info->vi_width;
  871:     }
  872:     adp->va_disp_start.x = 0;
  873:     adp->va_disp_start.y = 0;
  874:     bcopy(info, &adp->va_info, sizeof(adp->va_info));
  875: }
  876: 
  877: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  878: /* compare two parameter table entries */
  879: static int 
  880: comp_adpregs(u_char *buf1, u_char *buf2)
  881: {
  882:     static struct {
  883:         u_char mask;
  884:     } params[V_MODE_PARAM_SIZE] = {
  885: 	{0xff}, {0x00}, {0xff}, 		/* COLS}, ROWS}, POINTS */
  886: 	{0x00}, {0x00}, 			/* page length */
  887: 	{0xfe}, {0xff}, {0xff}, {0xff},		/* sequencer registers */
  888: 	{0xf3},					/* misc register */
  889: 	{0xff}, {0xff}, {0xff}, {0x7f}, {0xff},	/* CRTC */
  890: 	{0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
  891: 	{0x00}, {0x00}, {0x00}, {0x00}, {0x00},
  892: 	{0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
  893: 	{0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
  894: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},	/* attribute controller regs */
  895: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},
  896: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},
  897: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
  898: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},	/* GDC register */
  899: 	{0xff}, {0xff}, {0xff}, {0xff}, 
  900:     }; 
  901:     int identical = TRUE;
  902:     int i;
  903: 
  904:     if ((buf1 == NULL) || (buf2 == NULL))
  905: 	return COMP_DIFFERENT;
  906: 
  907:     for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
  908: 	if (params[i].mask == 0)	/* don't care */
  909: 	    continue;
  910: 	if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
  911: 	    return COMP_DIFFERENT;
  912: 	if (buf1[i] != buf2[i])
  913: 	    identical = FALSE;
  914:     }
  915:     return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
  916: }
  917: #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
  918: 
  919: /* probe video adapters and return the number of detected adapters */
  920: static int
  921: probe_adapters(void)
  922: {
  923:     video_adapter_t *adp;
  924:     video_info_t info;
  925: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  926:     u_char *mp;
  927: #endif
  928:     int i;
  929: 
  930:     /* do this test only once */
  931:     if (vga_init_done)
  932: 	return biosadapters;
  933:     vga_init_done = TRUE;
  934: 
  935:     /* 
  936:      * Locate display adapters. 
  937:      * The AT architecture supports upto two adapters. `syscons' allows
  938:      * the following combinations of adapters: 
  939:      *     1) MDA + CGA
  940:      *     2) MDA + EGA/VGA color 
  941:      *     3) CGA + EGA/VGA mono
  942:      * Note that `syscons' doesn't bother with MCGA as it is only
  943:      * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
  944:      * thus, they are not running FreeBSD!
  945:      * When there are two adapaters in the system, one becomes `primary'
  946:      * and the other `secondary'. The EGA adapter has a set of DIP 
  947:      * switches on board for this information and the EGA BIOS copies 
  948:      * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 
  949:      * The VGA BIOS has more sophisticated mechanism and has this 
  950:      * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 
  951:      * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
  952:      */
  953: 
  954:     /* 
  955:      * Check rtc and BIOS data area.
  956:      * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
  957:      * copy of RTC_EQUIPMENT.  Bits 4 and 5 of ETC_EQUIPMENT are
  958:      * zeros for EGA and VGA.  However, the EGA/VGA BIOS sets
  959:      * these bits in BIOSDATA_EQUIPMENT according to the monitor
  960:      * type detected.
  961:      */
  962: #ifndef VGA_NO_BIOS
  963:     if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
  964: 	/* EGA/VGA BIOS is present */
  965: 	fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 
  966: 			   biosadapter);
  967:     } else {
  968: 	switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) {	/* bit 4 and 5 */
  969: 	case 0:
  970: 	    /* EGA/VGA: shouldn't be happening */
  971: 	    fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 
  972: 			       biosadapter);
  973: 	    break;
  974: 	case 1:
  975: 	    /* CGA 40x25 */
  976: 	    /* FIXME: switch to the 80x25 mode? XXX */
  977: 	    biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
  978: 	    biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
  979: 	    break;
  980: 	case 2:
  981: 	    /* CGA 80x25 */
  982: 	    biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
  983: 	    biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
  984: 	    break;
  985: 	case 3:
  986: 	    /* MDA */
  987: 	    biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
  988: 	    biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
  989: 	    break;
  990: 	}
  991:     }
  992: #else
  993:     /* assume EGA/VGA? XXX */
  994:     biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
  995:     biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
  996: #endif /* VGA_NO_BIOS */
  997: 
  998:     biosadapters = 0;
  999:     if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
 1000: 	++biosadapters;
 1001: 	biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
 1002: 	biosadapter[V_ADP_SECONDARY].va_mode = 
 1003: 	    biosadapter[V_ADP_SECONDARY].va_initial_mode =
 1004: 	    map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 
 1005: 			      biosadapter[V_ADP_SECONDARY].va_flags
 1006: 				  & V_ADP_COLOR,
 1007: 			      biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
 1008:     } else {
 1009: 	biosadapter[V_ADP_SECONDARY].va_type = -1;
 1010:     }
 1011:     if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
 1012: 	++biosadapters;
 1013: 	biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
 1014: #ifndef VGA_NO_BIOS
 1015: 	biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 
 1016: 	    readb(BIOS_PADDRTOVADDR(0x449));
 1017: #else
 1018: 	biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3;	/* XXX */
 1019: #endif
 1020: 	biosadapter[V_ADP_PRIMARY].va_mode = 
 1021: 	    biosadapter[V_ADP_PRIMARY].va_initial_mode =
 1022: 	    map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 
 1023: 			      biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
 1024: 			      biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
 1025:     } else {
 1026: 	biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
 1027: 	biosadapter[V_ADP_SECONDARY].va_type = -1;
 1028:     }
 1029:     if (biosadapters == 0)
 1030: 	return biosadapters;
 1031:     biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
 1032:     biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
 1033: 
 1034: #if 0 /* we don't need these... */
 1035:     fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
 1036:     fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
 1037: #endif
 1038: 
 1039: #if notyet
 1040:     /*
 1041:      * We cannot have two video adapter of the same type; there must be
 1042:      * only one of color or mono adapter, or one each of them.
 1043:      */
 1044:     if (biosadapters > 1) {
 1045: 	if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
 1046: 	      & V_ADP_COLOR))
 1047: 	    /* we have two mono or color adapters!! */
 1048: 	    return (biosadapters = 0);
 1049:     }
 1050: #endif
 1051: 
 1052:     /*
 1053:      * Ensure a zero start address.  This is mainly to recover after
 1054:      * switching from pcvt using userconfig().  The registers are w/o
 1055:      * for old hardware so it's too hard to relocate the active screen
 1056:      * memory.
 1057:      * This must be done before vga_save_state() for VGA.
 1058:      */
 1059:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
 1060:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
 1061:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
 1062:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
 1063: 
 1064:     /* the video mode parameter table in EGA/VGA BIOS */
 1065:     /* NOTE: there can be only one EGA/VGA, wheather color or mono,
 1066:      * recognized by the video BIOS.
 1067:      */
 1068:     if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
 1069: 	(biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
 1070: 	adp = &biosadapter[V_ADP_PRIMARY];
 1071:     } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
 1072: 	       (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
 1073: 	adp = &biosadapter[V_ADP_SECONDARY];
 1074:     } else {
 1075: 	adp = NULL;
 1076:     }
 1077:     bzero(mode_map, sizeof(mode_map));
 1078:     if (adp != NULL) {
 1079: 	if (adp->va_type == KD_VGA) {
 1080: 	    vga_save_state(adp, &adpstate, sizeof(adpstate));
 1081: #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
 1082: 	    mode_map[adp->va_initial_mode] = adpstate.regs;
 1083: 	    rows_offset = 1;
 1084: #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1085: 	    if (video_mode_ptr == NULL) {
 1086: 		mode_map[adp->va_initial_mode] = adpstate.regs;
 1087: 		rows_offset = 1;
 1088: 	    } else {
 1089: 		/* discard the table if we are not familiar with it... */
 1090: 		map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
 1091: 		mp = get_mode_param(adp->va_initial_mode);
 1092: 		if (mp != NULL)
 1093: 		    bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
 1094: 		switch (comp_adpregs(adpstate.regs, mp)) {
 1095: 		case COMP_IDENTICAL:
 1096: 		    /*
 1097: 		     * OK, this parameter table looks reasonably familiar
 1098: 		     * to us...
 1099: 		     */
 1100: 		    /* 
 1101: 		     * This is a kludge for Toshiba DynaBook SS433 
 1102: 		     * whose BIOS video mode table entry has the actual # 
 1103: 		     * of rows at the offset 1; BIOSes from other 
 1104: 		     * manufacturers store the # of rows - 1 there. XXX
 1105: 		     */
 1106: 		    rows_offset = adpstate.regs[1] + 1 - mp[1];
 1107: 		    break;
 1108: 
 1109: 		case COMP_SIMILAR:
 1110: 		    /*
 1111: 		     * Not exactly the same, but similar enough to be
 1112: 		     * trusted. However, use the saved register values
 1113: 		     * for the initial mode and other modes which are
 1114: 		     * based on the initial mode.
 1115: 		     */
 1116: 		    mode_map[adp->va_initial_mode] = adpstate.regs;
 1117: 		    rows_offset = adpstate.regs[1] + 1 - mp[1];
 1118: 		    adpstate.regs[1] -= rows_offset - 1;
 1119: 		    break;
 1120: 
 1121: 		case COMP_DIFFERENT:
 1122: 		default:
 1123: 		    /*
 1124: 		     * Don't use the paramter table in BIOS. It doesn't
 1125: 		     * look familiar to us. Video mode switching is allowed
 1126: 		     * only if the new mode is the same as or based on
 1127: 		     * the initial mode. 
 1128: 		     */
 1129: 		    video_mode_ptr = NULL;
 1130: 		    bzero(mode_map, sizeof(mode_map));
 1131: 		    mode_map[adp->va_initial_mode] = adpstate.regs;
 1132: 		    rows_offset = 1;
 1133: 		    break;
 1134: 		}
 1135: 	    }
 1136: #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1137: 
 1138: #ifndef VGA_NO_MODE_CHANGE
 1139: 	    adp->va_flags |= V_ADP_MODECHANGE;
 1140: #endif
 1141: #ifndef VGA_NO_FONT_LOADING
 1142: 	    adp->va_flags |= V_ADP_FONT;
 1143: #endif
 1144: 	} else if (adp->va_type == KD_EGA) {
 1145: #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
 1146: 	    rows_offset = 1;
 1147: #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1148: 	    if (video_mode_ptr == NULL) {
 1149: 		rows_offset = 1;
 1150: 	    } else {
 1151: 		map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
 1152: 		/* XXX how can one validate the EGA table... */
 1153: 		mp = get_mode_param(adp->va_initial_mode);
 1154: 		if (mp != NULL) {
 1155: 		    adp->va_flags |= V_ADP_MODECHANGE;
 1156: #ifndef VGA_NO_FONT_LOADING
 1157: 		    adp->va_flags |= V_ADP_FONT;
 1158: #endif
 1159: 		    rows_offset = 1;
 1160: 		} else {
 1161: 		    /*
 1162: 		     * This is serious. We will not be able to switch video
 1163: 		     * modes at all...
 1164: 		     */
 1165: 		    video_mode_ptr = NULL;
 1166: 		    bzero(mode_map, sizeof(mode_map));
 1167: 		    rows_offset = 1;
 1168:                 }
 1169: 	    }
 1170: #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1171: 	}
 1172:     }
 1173: 
 1174:     /* remove conflicting modes if we have more than one adapter */
 1175:     if (biosadapters > 0) {
 1176: 	for (i = 0; i < biosadapters; ++i) {
 1177: 	    if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
 1178: 		continue;
 1179: 	    clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
 1180: 			   (biosadapter[i].va_flags & V_ADP_COLOR) ? 
 1181: 			       V_INFO_COLOR : 0);
 1182: 	    if ((biosadapter[i].va_type == KD_VGA)
 1183: 		|| (biosadapter[i].va_type == KD_EGA)) {
 1184: 		biosadapter[i].va_io_base =
 1185: 		    (biosadapter[i].va_flags & V_ADP_COLOR) ?
 1186: 			IO_VGA : IO_MDA;
 1187: 		biosadapter[i].va_io_size = 32;
 1188: 	    }
 1189: 	}
 1190:     }
 1191: 
 1192:     /* buffer address */
 1193:     vga_get_info(&biosadapter[V_ADP_PRIMARY],
 1194: 		 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
 1195:     info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
 1196:     update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
 1197: 
 1198:     if (biosadapters > 1) {
 1199: 	vga_get_info(&biosadapter[V_ADP_SECONDARY],
 1200: 		     biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
 1201: 	info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
 1202: 	update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
 1203:     }
 1204: 
 1205:     /*
 1206:      * XXX: we should verify the following values for the primary adapter...
 1207:      * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
 1208:      * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 
 1209:      *                     ? 0 : V_ADP_COLOR;
 1210:      * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
 1211:      * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
 1212:      * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
 1213:      * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
 1214:      */
 1215: 
 1216:     return biosadapters;
 1217: }
 1218: 
 1219: /* set the scan line length in pixel */
 1220: static int
 1221: set_line_length(video_adapter_t *adp, int pixel)
 1222: {
 1223:     u_char *mp;
 1224:     int ppw;	/* pixels per word */
 1225:     int bpl;	/* bytes per line */
 1226:     int count;
 1227: 
 1228:     if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
 1229: 	return ENODEV;
 1230:     mp = get_mode_param(adp->va_mode);
 1231:     if (mp == NULL)
 1232: 	return EINVAL;
 1233: 
 1234:     switch (adp->va_info.vi_mem_model) {
 1235:     case V_INFO_MM_PLANAR:
 1236: 	ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
 1237: 	count = (pixel + ppw - 1)/ppw/2;
 1238: 	bpl = ((pixel + ppw - 1)/ppw/2)*4;
 1239: 	break;
 1240:     case V_INFO_MM_PACKED:
 1241: 	count = (pixel + 7)/8;
 1242: 	bpl = ((pixel + 7)/8)*8;
 1243: 	break;
 1244:     case V_INFO_MM_TEXT:
 1245: 	count = (pixel + 7)/8;			/* columns */
 1246: 	bpl = (pixel + 7)/8;			/* columns */
 1247: 	break;
 1248:     default:
 1249: 	return ENODEV;
 1250:     }
 1251: 
 1252:     if (mp[10 + 0x17] & 0x40)			/* CRTC mode control reg */
 1253: 	count *= 2;				/* byte mode */
 1254:     outb(adp->va_crtc_addr, 0x13);
 1255:     outb(adp->va_crtc_addr + 1, count);
 1256:     adp->va_line_width = bpl;
 1257: 
 1258:     return 0;
 1259: }
 1260: 
 1261: static int
 1262: set_display_start(video_adapter_t *adp, int x, int y)
 1263: {
 1264:     int off;	/* byte offset (graphics mode)/word offset (text mode) */
 1265:     int poff;	/* pixel offset */
 1266:     int roff;	/* row offset */
 1267:     int ppb;	/* pixels per byte */
 1268: 
 1269:     if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
 1270: 	x &= ~7;
 1271:     if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
 1272: 	ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
 1273: 	off = y*adp->va_line_width + x/ppb;
 1274: 	roff = 0;
 1275: 	poff = x%ppb;
 1276:     } else {
 1277: 	if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
 1278: 	    outb(TSIDX, 1);
 1279: 	    if (inb(TSREG) & 1)
 1280: 		ppb = 9;
 1281: 	    else
 1282: 		ppb = 8;
 1283: 	} else {
 1284: 	    ppb = 8;
 1285: 	}
 1286: 	off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
 1287: 	roff = y%adp->va_info.vi_cheight;
 1288: 	/* FIXME: is this correct? XXX */
 1289: 	if (ppb == 8)
 1290: 	    poff = x%ppb;
 1291: 	else
 1292: 	    poff = (x + 8)%ppb;
 1293:     }
 1294: 
 1295:     /* start address */
 1296:     outb(adp->va_crtc_addr, 0xc);		/* high */
 1297:     outb(adp->va_crtc_addr + 1, off >> 8);
 1298:     outb(adp->va_crtc_addr, 0xd);		/* low */
 1299:     outb(adp->va_crtc_addr + 1, off & 0xff);
 1300: 
 1301:     /* horizontal pel pan */
 1302:     if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
 1303: 	inb(adp->va_crtc_addr + 6);
 1304: 	outb(ATC, 0x13 | 0x20);
 1305: 	outb(ATC, poff);
 1306: 	inb(adp->va_crtc_addr + 6);
 1307: 	outb(ATC, 0x20);
 1308:     }
 1309: 
 1310:     /* preset raw scan */
 1311:     outb(adp->va_crtc_addr, 8);
 1312:     outb(adp->va_crtc_addr + 1, roff);
 1313: 
 1314:     adp->va_disp_start.x = x;
 1315:     adp->va_disp_start.y = y;
 1316:     return 0;
 1317: }
 1318: 
 1319: #ifdef __i386__	/* XXX */
 1320: static void
 1321: fill(int val, void *d, size_t size)
 1322: {
 1323:     u_char *p = d;
 1324: 
 1325:     while (size-- > 0)
 1326: 	*p++ = val;
 1327: }
 1328: #endif /* __i386__ */
 1329: 
 1330: static void
 1331: filll_io(int val, vm_offset_t d, size_t size)
 1332: {
 1333:     while (size-- > 0) {
 1334: 	writel(d, val);
 1335: 	d += sizeof(u_int32_t);
 1336:     }
 1337: }
 1338: 
 1339: /* entry points */
 1340: 
 1341: #if 0
 1342: static int
 1343: vga_nop(void)
 1344: {
 1345:     return 0;
 1346: }
 1347: #endif
 1348: 
 1349: static int
 1350: vga_error(void)
 1351: {
 1352:     return ENODEV;
 1353: }
 1354: 
 1355: static int
 1356: vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
 1357: {
 1358:     probe_adapters();
 1359:     if (unit >= biosadapters)
 1360: 	return ENXIO;
 1361: 
 1362:     *adpp = &biosadapter[unit];
 1363: 
 1364:     return 0;
 1365: }
 1366: 
 1367: static int
 1368: vga_init(int unit, video_adapter_t *adp, int flags)
 1369: {
 1370:     if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
 1371: 	return ENXIO;
 1372: 
 1373:     if (!init_done(adp)) {
 1374: 	/* nothing to do really... */
 1375: 	adp->va_flags |= V_ADP_INITIALIZED;
 1376:     }
 1377: 
 1378:     if (!config_done(adp)) {
 1379: 	if (vid_register(adp) < 0)
 1380: 		return ENXIO;
 1381: 	adp->va_flags |= V_ADP_REGISTERED;
 1382:     }
 1383:     if (vga_sub_configure != NULL)
 1384: 	(*vga_sub_configure)(0);
 1385: 
 1386:     return 0;
 1387: }
 1388: 
 1389: /*
 1390:  * get_info():
 1391:  * Return the video_info structure of the requested video mode.
 1392:  *
 1393:  * all adapters
 1394:  */
 1395: static int
 1396: vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
 1397: {
 1398:     int i;
 1399: 
 1400:     if (!vga_init_done)
 1401: 	return ENXIO;
 1402: 
 1403:     mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
 1404: #ifndef VGA_NO_MODE_CHANGE
 1405:     if (adp->va_flags & V_ADP_MODECHANGE) {
 1406: 	/*
 1407: 	 * If the parameter table entry for this mode is not found, 
 1408: 	 * the mode is not supported...
 1409: 	 */
 1410: 	if (get_mode_param(mode) == NULL)
 1411: 	    return EINVAL;
 1412:     } else
 1413: #endif /* VGA_NO_MODE_CHANGE */
 1414:     {
 1415: 	/* 
 1416: 	 * Even if we don't support video mode switching on this adapter,
 1417: 	 * the information on the initial (thus current) video mode 
 1418: 	 * should be made available.
 1419: 	 */
 1420: 	if (mode != adp->va_initial_mode)
 1421: 	    return EINVAL;
 1422:     }
 1423: 
 1424:     for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
 1425: 	if (bios_vmode[i].vi_mode == NA)
 1426: 	    continue;
 1427: 	if (mode == bios_vmode[i].vi_mode) {
 1428: 	    *info = bios_vmode[i];
 1429: 	    /* XXX */
 1430: 	    info->vi_buffer_size = info->vi_window_size*info->vi_planes;
 1431: 	    return 0;
 1432: 	}
 1433:     }
 1434:     return EINVAL;
 1435: }
 1436: 
 1437: /*
 1438:  * query_mode():
 1439:  * Find a video mode matching the requested parameters.
 1440:  * Fields filled with 0 are considered "don't care" fields and
 1441:  * match any modes.
 1442:  *
 1443:  * all adapters
 1444:  */
 1445: static int
 1446: vga_query_mode(video_adapter_t *adp, video_info_t *info)
 1447: {
 1448:     int i;
 1449: 
 1450:     if (!vga_init_done)
 1451: 	return ENXIO;
 1452: 
 1453:     for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
 1454: 	if (bios_vmode[i].vi_mode == NA)
 1455: 	    continue;
 1456: 
 1457: 	if ((info->vi_width != 0)
 1458: 	    && (info->vi_width != bios_vmode[i].vi_width))
 1459: 		continue;
 1460: 	if ((info->vi_height != 0)
 1461: 	    && (info->vi_height != bios_vmode[i].vi_height))
 1462: 		continue;
 1463: 	if ((info->vi_cwidth != 0)
 1464: 	    && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
 1465: 		continue;
 1466: 	if ((info->vi_cheight != 0)
 1467: 	    && (info->vi_cheight != bios_vmode[i].vi_cheight))
 1468: 		continue;
 1469: 	if ((info->vi_depth != 0)
 1470: 	    && (info->vi_depth != bios_vmode[i].vi_depth))
 1471: 		continue;
 1472: 	if ((info->vi_planes != 0)
 1473: 	    && (info->vi_planes != bios_vmode[i].vi_planes))
 1474: 		continue;
 1475: 	/* XXX: should check pixel format, memory model */
 1476: 	if ((info->vi_flags != 0)
 1477: 	    && (info->vi_flags != bios_vmode[i].vi_flags))
 1478: 		continue;
 1479: 
 1480: 	/* verify if this mode is supported on this adapter */
 1481: 	if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
 1482: 		continue;
 1483: 	return 0;
 1484:     }
 1485:     return ENODEV;
 1486: }
 1487: 
 1488: /*
 1489:  * set_mode():
 1490:  * Change the video mode.
 1491:  *
 1492:  * EGA/VGA
 1493:  */
 1494: 
 1495: #ifndef VGA_NO_MODE_CHANGE
 1496: #ifdef VGA_WIDTH90
 1497: static void
 1498: set_width90(adp_state_t *params)
 1499: {
 1500:     /* 
 1501:      * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
 1502:      * and alexv@sui.gda.itesm.mx.
 1503:      */
 1504:     params->regs[5] |= 1;		/* toggle 8 pixel wide fonts */
 1505:     params->regs[10+0x0] = 0x6b;
 1506:     params->regs[10+0x1] = 0x59;
 1507:     params->regs[10+0x2] = 0x5a;
 1508:     params->regs[10+0x3] = 0x8e;
 1509:     params->regs[10+0x4] = 0x5e;
 1510:     params->regs[10+0x5] = 0x8a;
 1511:     params->regs[10+0x13] = 45;
 1512:     params->regs[35+0x13] = 0;
 1513: }
 1514: #endif /* VGA_WIDTH90 */
 1515: #endif /* !VGA_NO_MODE_CHANGE */
 1516: 
 1517: static int
 1518: vga_set_mode(video_adapter_t *adp, int mode)
 1519: {
 1520: #ifndef VGA_NO_MODE_CHANGE
 1521:     video_info_t info;
 1522:     adp_state_t params;
 1523: 
 1524:     prologue(adp, V_ADP_MODECHANGE, ENODEV);
 1525: 
 1526:     mode = map_gen_mode_num(adp->va_type, 
 1527: 			    adp->va_flags & V_ADP_COLOR, mode);
 1528:     if (vga_get_info(adp, mode, &info))
 1529: 	return EINVAL;
 1530: 
 1531: #if VGA_DEBUG > 1
 1532:     printf("vga_set_mode(): setting mode %d\n", mode);
 1533: #endif
 1534: 
 1535:     params.sig = V_STATE_SIG;
 1536:     bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
 1537: 
 1538:     switch (mode) {
 1539: #ifdef VGA_WIDTH90
 1540:     case M_VGA_C90x60: case M_VGA_M90x60:
 1541: 	set_width90(&params);
 1542: 	/* FALL THROUGH */
 1543: #endif
 1544:     case M_VGA_C80x60: case M_VGA_M80x60:
 1545: 	params.regs[2]  = 0x08;
 1546: 	params.regs[19] = 0x47;
 1547: 	goto special_480l;
 1548: 
 1549: #ifdef VGA_WIDTH90
 1550:     case M_VGA_C90x30: case M_VGA_M90x30:
 1551: 	set_width90(&params);
 1552: 	/* FALL THROUGH */
 1553: #endif
 1554:     case M_VGA_C80x30: case M_VGA_M80x30:
 1555: 	params.regs[19] = 0x4f;
 1556: special_480l:
 1557: 	params.regs[9] |= 0xc0;
 1558: 	params.regs[16] = 0x08;
 1559: 	params.regs[17] = 0x3e;
 1560: 	params.regs[26] = 0xea;
 1561: 	params.regs[28] = 0xdf;
 1562: 	params.regs[31] = 0xe7;
 1563: 	params.regs[32] = 0x04;
 1564: 	goto setup_mode;
 1565: 
 1566: #ifdef VGA_WIDTH90
 1567:     case M_VGA_C90x43: case M_VGA_M90x43:
 1568: 	set_width90(&params);
 1569: 	/* FALL THROUGH */
 1570: #endif
 1571:     case M_ENH_C80x43: case M_ENH_B80x43:
 1572: 	params.regs[28] = 87;
 1573: 	goto special_80x50;
 1574: 
 1575: #ifdef VGA_WIDTH90
 1576:     case M_VGA_C90x50: case M_VGA_M90x50:
 1577: 	set_width90(&params);
 1578: 	/* FALL THROUGH */
 1579: #endif
 1580:     case M_VGA_C80x50: case M_VGA_M80x50:
 1581: special_80x50:
 1582: 	params.regs[2] = 8;
 1583: 	params.regs[19] = 7;
 1584: 	goto setup_mode;
 1585: 
 1586: #ifdef VGA_WIDTH90
 1587:     case M_VGA_C90x25: case M_VGA_M90x25:
 1588: 	set_width90(&params);
 1589: 	/* FALL THROUGH */
 1590: #endif
 1591:     case M_VGA_C40x25: case M_VGA_C80x25:
 1592:     case M_VGA_M80x25:
 1593:     case M_B40x25:     case M_C40x25:
 1594:     case M_B80x25:     case M_C80x25:
 1595:     case M_ENH_B40x25: case M_ENH_C40x25:
 1596:     case M_ENH_B80x25: case M_ENH_C80x25:
 1597:     case M_EGAMONO80x25:
 1598: 
 1599: setup_mode:
 1600: 	vga_load_state(adp, &params);
 1601: 	break;
 1602: 
 1603:     case M_VGA_MODEX:
 1604: 	/* "unchain" the VGA mode */
 1605: 	params.regs[5-1+0x04] &= 0xf7;
 1606: 	params.regs[5-1+0x04] |= 0x04;
 1607: 	/* turn off doubleword mode */
 1608: 	params.regs[10+0x14] &= 0xbf;
 1609: 	/* turn off word adressing */
 1610: 	params.regs[10+0x17] |= 0x40;
 1611: 	/* set logical screen width */
 1612: 	params.regs[10+0x13] = 80;
 1613: 	/* set 240 lines */
 1614: 	params.regs[10+0x11] = 0x2c;
 1615: 	params.regs[10+0x06] = 0x0d;
 1616: 	params.regs[10+0x07] = 0x3e;
 1617: 	params.regs[10+0x10] = 0xea;
 1618: 	params.regs[10+0x11] = 0xac;
 1619: 	params.regs[10+0x12] = 0xdf;
 1620: 	params.regs[10+0x15] = 0xe7;
 1621: 	params.regs[10+0x16] = 0x06;
 1622: 	/* set vertical sync polarity to reflect aspect ratio */
 1623: 	params.regs[9] = 0xe3;
 1624: 	goto setup_grmode;
 1625: 
 1626:     case M_BG320:     case M_CG320:     case M_BG640:
 1627:     case M_CG320_D:   case M_CG640_E:
 1628:     case M_CG640x350: case M_ENH_CG640:
 1629:     case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
 1630: 
 1631: setup_grmode:
 1632: 	vga_load_state(adp, &params);
 1633: 	break;
 1634: 
 1635:     default:
 1636: 	return EINVAL;
 1637:     }
 1638: 
 1639:     adp->va_mode = mode;
 1640:     info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
 1641:     update_adapter_info(adp, &info);
 1642: 
 1643:     /* move hardware cursor out of the way */
 1644:     (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
 1645: 
 1646:     return 0;
 1647: #else /* VGA_NO_MODE_CHANGE */
 1648:     return ENODEV;
 1649: #endif /* VGA_NO_MODE_CHANGE */
 1650: }
 1651: 
 1652: #ifndef VGA_NO_FONT_LOADING
 1653: 
 1654: static void
 1655: set_font_mode(video_adapter_t *adp, u_char *buf)
 1656: {
 1657:     u_char *mp;
 1658:     int s;
 1659: 
 1660:     s = splhigh();
 1661: 
 1662:     /* save register values */
 1663:     if (adp->va_type == KD_VGA) {
 1664: 	outb(TSIDX, 0x02); buf[0] = inb(TSREG);
 1665: 	outb(TSIDX, 0x04); buf[1] = inb(TSREG);
 1666: 	outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
 1667: 	outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
 1668: 	outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
 1669: 	inb(adp->va_crtc_addr + 6);
 1670: 	outb(ATC, 0x10); buf[5] = inb(ATC + 1);
 1671:     } else /* if (adp->va_type == KD_EGA) */ {
 1672: 	/* 
 1673: 	 * EGA cannot be read; copy parameters from the mode parameter 
 1674: 	 * table. 
 1675: 	 */
 1676: 	mp = get_mode_param(adp->va_mode);
 1677: 	buf[0] = mp[5 + 0x02 - 1];
 1678: 	buf[1] = mp[5 + 0x04 - 1];
 1679: 	buf[2] = mp[55 + 0x04];
 1680: 	buf[3] = mp[55 + 0x05];
 1681: 	buf[4] = mp[55 + 0x06];
 1682: 	buf[5] = mp[35 + 0x10];
 1683:     }
 1684: 
 1685:     /* setup vga for loading fonts */
 1686:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1687:     outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
 1688:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1689:     outb(ATC, 0x20);				/* enable palette */
 1690: 
 1691: #if VGA_SLOW_IOACCESS
 1692: #ifdef VGA_ALT_SEQACCESS
 1693:     outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1694: #endif
 1695:     outb(TSIDX, 0x02); outb(TSREG, 0x04);
 1696:     outb(TSIDX, 0x04); outb(TSREG, 0x07);
 1697: #ifdef VGA_ALT_SEQACCESS
 1698:     outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1699: #endif
 1700:     outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
 1701:     outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
 1702:     outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
 1703: #else /* VGA_SLOW_IOACCESS */
 1704: #ifdef VGA_ALT_SEQACCESS
 1705:     outw(TSIDX, 0x0100);
 1706: #endif
 1707:     outw(TSIDX, 0x0402);
 1708:     outw(TSIDX, 0x0704);
 1709: #ifdef VGA_ALT_SEQACCESS
 1710:     outw(TSIDX, 0x0300);
 1711: #endif
 1712:     outw(GDCIDX, 0x0204);
 1713:     outw(GDCIDX, 0x0005);
 1714:     outw(GDCIDX, 0x0406);               /* addr = a0000, 64kb */
 1715: #endif /* VGA_SLOW_IOACCESS */
 1716: 
 1717:     splx(s);
 1718: }
 1719: 
 1720: static void
 1721: set_normal_mode(video_adapter_t *adp, u_char *buf)
 1722: {
 1723:     int s;
 1724: 
 1725:     s = splhigh();
 1726: 
 1727:     /* setup vga for normal operation mode again */
 1728:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1729:     outb(ATC, 0x10); outb(ATC, buf[5]);
 1730:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1731:     outb(ATC, 0x20);				/* enable palette */
 1732: 
 1733: #if VGA_SLOW_IOACCESS
 1734: #ifdef VGA_ALT_SEQACCESS
 1735:     outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1736: #endif
 1737:     outb(TSIDX, 0x02); outb(TSREG, buf[0]);
 1738:     outb(TSIDX, 0x04); outb(TSREG, buf[1]);
 1739: #ifdef VGA_ALT_SEQACCESS
 1740:     outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1741: #endif
 1742:     outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
 1743:     outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
 1744:     if (adp->va_crtc_addr == MONO_CRTC) {
 1745: 	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
 1746:     } else {
 1747: 	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
 1748:     }
 1749: #else /* VGA_SLOW_IOACCESS */
 1750: #ifdef VGA_ALT_SEQACCESS
 1751:     outw(TSIDX, 0x0100);
 1752: #endif
 1753:     outw(TSIDX, 0x0002 | (buf[0] << 8));
 1754:     outw(TSIDX, 0x0004 | (buf[1] << 8));
 1755: #ifdef VGA_ALT_SEQACCESS
 1756:     outw(TSIDX, 0x0300);
 1757: #endif
 1758:     outw(GDCIDX, 0x0004 | (buf[2] << 8));
 1759:     outw(GDCIDX, 0x0005 | (buf[3] << 8));
 1760:     if (adp->va_crtc_addr == MONO_CRTC)
 1761:         outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
 1762:     else
 1763:         outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
 1764: #endif /* VGA_SLOW_IOACCESS */
 1765: 
 1766:     splx(s);
 1767: }
 1768: 
 1769: #endif /* VGA_NO_FONT_LOADING */
 1770: 
 1771: /*
 1772:  * save_font():
 1773:  * Read the font data in the requested font page from the video adapter.
 1774:  *
 1775:  * EGA/VGA
 1776:  */
 1777: static int
 1778: vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
 1779: 	      int ch, int count)
 1780: {
 1781: #ifndef VGA_NO_FONT_LOADING
 1782:     u_char buf[PARAM_BUFSIZE];
 1783:     u_int32_t segment;
 1784:     int c;
 1785: #ifdef VGA_ALT_SEQACCESS
 1786:     int s;
 1787:     u_char val = 0;
 1788: #endif
 1789: 
 1790:     prologue(adp, V_ADP_FONT, ENODEV);
 1791: 
 1792:     if (fontsize < 14) {
 1793: 	/* FONT_8 */
 1794: 	fontsize = 8;
 1795:     } else if (fontsize >= 32) {
 1796: 	fontsize = 32;
 1797:     } else if (fontsize >= 16) {
 1798: 	/* FONT_16 */
 1799: 	fontsize = 16;
 1800:     } else {
 1801: 	/* FONT_14 */
 1802: 	fontsize = 14;
 1803:     }
 1804: 
 1805:     if (page < 0 || page >= 8)
 1806: 	return EINVAL;
 1807:     segment = FONT_BUF + 0x4000*page;
 1808:     if (page > 3)
 1809: 	segment -= 0xe000;
 1810: 
 1811: #ifdef VGA_ALT_SEQACCESS
 1812:     if (adp->va_type == KD_VGA) {	/* what about EGA? XXX */
 1813: 	s = splhigh();
 1814: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1815: 	outb(TSIDX, 0x01); val = inb(TSREG);	/* disable screen */
 1816: 	outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
 1817: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1818: 	splx(s);
 1819:     }
 1820: #endif
 1821: 
 1822:     set_font_mode(adp, buf);
 1823:     if (fontsize == 32) {
 1824: 	bcopy_fromio(segment + ch*32, data, fontsize*count);
 1825:     } else {
 1826: 	for (c = ch; count > 0; ++c, --count) {
 1827: 	    bcopy_fromio(segment + c*32, data, fontsize);
 1828: 	    data += fontsize;
 1829: 	}
 1830:     }
 1831:     set_normal_mode(adp, buf);
 1832: 
 1833: #ifdef VGA_ALT_SEQACCESS
 1834:     if (adp->va_type == KD_VGA) {
 1835: 	s = splhigh();
 1836: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1837: 	outb(TSIDX, 0x01); outb(TSREG, val & 0xdf);	/* enable screen */
 1838: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1839: 	splx(s);
 1840:     }
 1841: #endif
 1842: 
 1843:     return 0;
 1844: #else /* VGA_NO_FONT_LOADING */
 1845:     return ENODEV;
 1846: #endif /* VGA_NO_FONT_LOADING */
 1847: }
 1848: 
 1849: /*
 1850:  * load_font():
 1851:  * Set the font data in the requested font page.
 1852:  * NOTE: it appears that some recent video adapters do not support
 1853:  * the font page other than 0... XXX
 1854:  *
 1855:  * EGA/VGA
 1856:  */
 1857: static int
 1858: vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
 1859: 	      int ch, int count)
 1860: {
 1861: #ifndef VGA_NO_FONT_LOADING
 1862:     u_char buf[PARAM_BUFSIZE];
 1863:     u_int32_t segment;
 1864:     int c;
 1865: #ifdef VGA_ALT_SEQACCESS
 1866:     int s;
 1867:     u_char val = 0;
 1868: #endif
 1869: 
 1870:     prologue(adp, V_ADP_FONT, ENODEV);
 1871: 
 1872:     if (fontsize < 14) {
 1873: 	/* FONT_8 */
 1874: 	fontsize = 8;
 1875:     } else if (fontsize >= 32) {
 1876: 	fontsize = 32;
 1877:     } else if (fontsize >= 16) {
 1878: 	/* FONT_16 */
 1879: 	fontsize = 16;
 1880:     } else {
 1881: 	/* FONT_14 */
 1882: 	fontsize = 14;
 1883:     }
 1884: 
 1885:     if (page < 0 || page >= 8)
 1886: 	return EINVAL;
 1887:     segment = FONT_BUF + 0x4000*page;
 1888:     if (page > 3)
 1889: 	segment -= 0xe000;
 1890: 
 1891: #ifdef VGA_ALT_SEQACCESS
 1892:     if (adp->va_type == KD_VGA) {	/* what about EGA? XXX */
 1893: 	s = splhigh();
 1894: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1895: 	outb(TSIDX, 0x01); val = inb(TSREG);	/* disable screen */
 1896: 	outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
 1897: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1898: 	splx(s);
 1899:     }
 1900: #endif
 1901: 
 1902:     set_font_mode(adp, buf);
 1903:     if (fontsize == 32) {
 1904: 	bcopy_toio(data, segment + ch*32, fontsize*count);
 1905:     } else {
 1906: 	for (c = ch; count > 0; ++c, --count) {
 1907: 	    bcopy_toio(data, segment + c*32, fontsize);
 1908: 	    data += fontsize;
 1909: 	}
 1910:     }
 1911:     set_normal_mode(adp, buf);
 1912: 
 1913: #ifdef VGA_ALT_SEQACCESS
 1914:     if (adp->va_type == KD_VGA) {
 1915: 	s = splhigh();
 1916: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1917: 	outb(TSIDX, 0x01); outb(TSREG, val & 0xdf);	/* enable screen */
 1918: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1919: 	splx(s);
 1920:     }
 1921: #endif
 1922: 
 1923:     return 0;
 1924: #else /* VGA_NO_FONT_LOADING */
 1925:     return ENODEV;
 1926: #endif /* VGA_NO_FONT_LOADING */
 1927: }
 1928: 
 1929: /*
 1930:  * show_font():
 1931:  * Activate the requested font page.
 1932:  * NOTE: it appears that some recent video adapters do not support
 1933:  * the font page other than 0... XXX
 1934:  *
 1935:  * EGA/VGA
 1936:  */
 1937: static int
 1938: vga_show_font(video_adapter_t *adp, int page)
 1939: {
 1940: #ifndef VGA_NO_FONT_LOADING
 1941:     static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
 1942:     int s;
 1943: 
 1944:     prologue(adp, V_ADP_FONT, ENODEV);
 1945:     if (page < 0 || page >= 8)
 1946: 	return EINVAL;
 1947: 
 1948:     s = splhigh();
 1949:     outb(TSIDX, 0x03); outb(TSREG, cg[page]);
 1950:     splx(s);
 1951: 
 1952:     return 0;
 1953: #else /* VGA_NO_FONT_LOADING */
 1954:     return ENODEV;
 1955: #endif /* VGA_NO_FONT_LOADING */
 1956: }
 1957: 
 1958: /*
 1959:  * save_palette():
 1960:  * Read DAC values. The values have expressed in 8 bits.
 1961:  *
 1962:  * VGA
 1963:  */
 1964: static int
 1965: vga_save_palette(video_adapter_t *adp, u_char *palette)
 1966: {
 1967:     int i;
 1968: 
 1969:     prologue(adp, V_ADP_PALETTE, ENODEV);
 1970: 
 1971:     /* 
 1972:      * We store 8 bit values in the palette buffer, while the standard
 1973:      * VGA has 6 bit DAC .
 1974:      */
 1975:     outb(PALRADR, 0x00);
 1976:     for (i = 0; i < 256*3; ++i)
 1977: 	palette[i] = inb(PALDATA) << 2; 
 1978:     inb(adp->va_crtc_addr + 6);	/* reset flip/flop */
 1979:     return 0;
 1980: }
 1981: 
 1982: static int
 1983: vga_save_palette2(video_adapter_t *adp, int base, int count,
 1984: 		  u_char *r, u_char *g, u_char *b)
 1985: {
 1986:     int i;
 1987: 
 1988:     prologue(adp, V_ADP_PALETTE, ENODEV);
 1989: 
 1990:     outb(PALRADR, base);
 1991:     for (i = 0; i < count; ++i) {
 1992: 	r[i] = inb(PALDATA) << 2; 
 1993: 	g[i] = inb(PALDATA) << 2; 
 1994: 	b[i] = inb(PALDATA) << 2; 
 1995:     }
 1996:     inb(adp->va_crtc_addr + 6);		/* reset flip/flop */
 1997:     return 0;
 1998: }
 1999: 
 2000: /*
 2001:  * load_palette():
 2002:  * Set DAC values.
 2003:  *
 2004:  * VGA
 2005:  */
 2006: static int
 2007: vga_load_palette(video_adapter_t *adp, u_char *palette)
 2008: {
 2009:     int i;
 2010: 
 2011:     prologue(adp, V_ADP_PALETTE, ENODEV);
 2012: 
 2013:     outb(PIXMASK, 0xff);		/* no pixelmask */
 2014:     outb(PALWADR, 0x00);
 2015:     for (i = 0; i < 256*3; ++i)
 2016: 	outb(PALDATA, palette[i] >> 2);
 2017:     inb(adp->va_crtc_addr + 6);	/* reset flip/flop */
 2018:     outb(ATC, 0x20);			/* enable palette */
 2019:     return 0;
 2020: }
 2021: 
 2022: static int
 2023: vga_load_palette2(video_adapter_t *adp, int base, int count,
 2024: 		  u_char *r, u_char *g, u_char *b)
 2025: {
 2026:     int i;
 2027: 
 2028:     prologue(adp, V_ADP_PALETTE, ENODEV);
 2029: 
 2030:     outb(PIXMASK, 0xff);		/* no pixelmask */
 2031:     outb(PALWADR, base);
 2032:     for (i = 0; i < count; ++i) {
 2033: 	outb(PALDATA, r[i] >> 2);
 2034: 	outb(PALDATA, g[i] >> 2);
 2035: 	outb(PALDATA, b[i] >> 2);
 2036:     }
 2037:     inb(adp->va_crtc_addr + 6);		/* reset flip/flop */
 2038:     outb(ATC, 0x20);			/* enable palette */
 2039:     return 0;
 2040: }
 2041: 
 2042: /*
 2043:  * set_border():
 2044:  * Change the border color.
 2045:  *
 2046:  * CGA/EGA/VGA
 2047:  */
 2048: static int
 2049: vga_set_border(video_adapter_t *adp, int color)
 2050: {
 2051:     prologue(adp, V_ADP_BORDER, ENODEV);
 2052: 
 2053:     switch (adp->va_type) {
 2054:     case KD_EGA:
 2055:     case KD_VGA:    
 2056: 	inb(adp->va_crtc_addr + 6);	/* reset flip-flop */
 2057: 	outb(ATC, 0x31); outb(ATC, color & 0xff); 
 2058: 	break;  
 2059:     case KD_CGA:    
 2060: 	outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
 2061: 	break;  
 2062:     case KD_MONO:   
 2063:     case KD_HERCULES:
 2064:     default:
 2065: 	break;  
 2066:     }
 2067:     return 0;
 2068: }
 2069: 
 2070: /*
 2071:  * save_state():
 2072:  * Read video register values.
 2073:  * NOTE: this function only reads the standard EGA/VGA registers.
 2074:  * any extra/extended registers of SVGA adapters are not saved.
 2075:  *
 2076:  * VGA
 2077:  */
 2078: static int
 2079: vga_save_state(video_adapter_t *adp, void *p, size_t size)
 2080: {
 2081:     video_info_t info;
 2082:     u_char *buf;
 2083:     int crtc_addr;
 2084:     int i, j;
 2085:     int s;
 2086: 
 2087:     if (size == 0) {
 2088: 	/* return the required buffer size */
 2089: 	prologue(adp, V_ADP_STATESAVE, 0);
 2090: 	return sizeof(adp_state_t);
 2091:     } else {
 2092: 	prologue(adp, V_ADP_STATESAVE, ENODEV);
 2093: 	if (size < sizeof(adp_state_t))
 2094: 	    return EINVAL;
 2095:     }
 2096: 
 2097:     ((adp_state_t *)p)->sig = V_STATE_SIG;
 2098:     buf = ((adp_state_t *)p)->regs;
 2099:     bzero(buf, V_MODE_PARAM_SIZE);
 2100:     crtc_addr = adp->va_crtc_addr;
 2101: 
 2102:     s = splhigh();
 2103: 
 2104:     outb(TSIDX, 0x00); outb(TSREG, 0x01);	/* stop sequencer */
 2105:     for (i = 0, j = 5; i < 4; i++) {           
 2106: 	outb(TSIDX, i + 1);
 2107: 	buf[j++]  =  inb(TSREG);
 2108:     }
 2109:     buf[9]  =  inb(MISC + 10);			/* dot-clock */
 2110:     outb(TSIDX, 0x00); outb(TSREG, 0x03);	/* start sequencer */
 2111: 
 2112:     for (i = 0, j = 10; i < 25; i++) {		/* crtc */
 2113: 	outb(crtc_addr, i);
 2114: 	buf[j++]  =  inb(crtc_addr + 1);
 2115:     }
 2116:     for (i = 0, j = 35; i < 20; i++) {		/* attribute ctrl */
 2117:         inb(crtc_addr + 6);			/* reset flip-flop */
 2118: 	outb(ATC, i);
 2119: 	buf[j++]  =  inb(ATC + 1);
 2120:     }
 2121:     for (i = 0, j = 55; i < 9; i++) {		/* graph data ctrl */
 2122: 	outb(GDCIDX, i);
 2123: 	buf[j++]  =  inb(GDCREG);
 2124:     }
 2125:     inb(crtc_addr + 6);				/* reset flip-flop */
 2126:     outb(ATC, 0x20);				/* enable palette */
 2127: 
 2128:     splx(s);
 2129: 
 2130: #if 1
 2131:     if (vga_get_info(adp, adp->va_mode, &info) == 0) {
 2132: 	if (info.vi_flags & V_INFO_GRAPHICS) {
 2133: 	    buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
 2134: 	    buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
 2135: 	} else {
 2136: 	    buf[0] = info.vi_width;		/* COLS */
 2137: 	    buf[1] = info.vi_height - 1;	/* ROWS */
 2138: 	}
 2139: 	buf[2] = info.vi_cheight;		/* POINTS */
 2140:     } else {
 2141: 	/* XXX: shouldn't be happening... */
 2142: 	printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
 2143: 	       adp->va_unit, adp->va_name);
 2144:     }
 2145: #else
 2146:     buf[0] = readb(BIOS_PADDRTOVADDR(0x44a));	/* COLS */
 2147:     buf[1] = readb(BIOS_PADDRTOVADDR(0x484));	/* ROWS */
 2148:     buf[2] = readb(BIOS_PADDRTOVADDR(0x485));	/* POINTS */
 2149:     buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
 2150:     buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
 2151: #endif
 2152: 
 2153:     return 0;
 2154: }
 2155: 
 2156: /*
 2157:  * load_state():
 2158:  * Set video registers at once.
 2159:  * NOTE: this function only updates the standard EGA/VGA registers.
 2160:  * any extra/extended registers of SVGA adapters are not changed.
 2161:  *
 2162:  * EGA/VGA
 2163:  */
 2164: static int
 2165: vga_load_state(video_adapter_t *adp, void *p)
 2166: {
 2167:     u_char *buf;
 2168:     int crtc_addr;
 2169:     int s;
 2170:     int i;
 2171: 
 2172:     prologue(adp, V_ADP_STATELOAD, ENODEV);
 2173:     if (((adp_state_t *)p)->sig != V_STATE_SIG)
 2174: 	return EINVAL;
 2175: 
 2176:     buf = ((adp_state_t *)p)->regs;
 2177:     crtc_addr = adp->va_crtc_addr;
 2178: 
 2179: #if VGA_DEBUG > 1
 2180:     dump_buffer(buf, V_MODE_PARAM_SIZE);
 2181: #endif
 2182: 
 2183:     s = splhigh();
 2184: 
 2185:     outb(TSIDX, 0x00); outb(TSREG, 0x01);	/* stop sequencer */
 2186:     for (i = 0; i < 4; ++i) {			/* program sequencer */
 2187: 	outb(TSIDX, i + 1);
 2188: 	outb(TSREG, buf[i + 5]);
 2189:     }
 2190:     outb(MISC, buf[9]);				/* set dot-clock */
 2191:     outb(TSIDX, 0x00); outb(TSREG, 0x03);	/* start sequencer */
 2192:     outb(crtc_addr, 0x11);
 2193:     outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
 2194:     for (i = 0; i < 25; ++i) {			/* program crtc */
 2195: 	outb(crtc_addr, i);
 2196: 	outb(crtc_addr + 1, buf[i + 10]);
 2197:     }
 2198:     inb(crtc_addr+6);				/* reset flip-flop */
 2199:     for (i = 0; i < 20; ++i) {			/* program attribute ctrl */
 2200: 	outb(ATC, i);
 2201: 	outb(ATC, buf[i + 35]);
 2202:     }
 2203:     for (i = 0; i < 9; ++i) {			/* program graph data ctrl */
 2204: 	outb(GDCIDX, i);
 2205: 	outb(GDCREG, buf[i + 55]);
 2206:     }
 2207:     inb(crtc_addr + 6);				/* reset flip-flop */
 2208:     outb(ATC, 0x20);				/* enable palette */
 2209: 
 2210: #if notyet /* a temporary workaround for kernel panic, XXX */
 2211: #ifndef VGA_NO_BIOS
 2212:     if (adp->va_unit == V_ADP_PRIMARY) {
 2213: 	writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]);	/* COLS */
 2214: 	writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
 2215: 	writeb(BIOS_PADDRTOVADDR(0x485), buf[2]);	/* POINTS */
 2216: #if 0
 2217: 	writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
 2218: 	writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
 2219: #endif
 2220:     }
 2221: #endif /* VGA_NO_BIOS */
 2222: #endif /* notyet */
 2223: 
 2224:     splx(s);
 2225:     return 0;
 2226: }
 2227: 
 2228: /*
 2229:  * set_origin():
 2230:  * Change the origin (window mapping) of the banked frame buffer.
 2231:  */
 2232: static int
 2233: vga_set_origin(video_adapter_t *adp, off_t offset)
 2234: {
 2235:     /* 
 2236:      * The standard video modes do not require window mapping; 
 2237:      * always return error.
 2238:      */
 2239:     return ENODEV;
 2240: }
 2241: 
 2242: /*
 2243:  * read_hw_cursor():
 2244:  * Read the position of the hardware text cursor.
 2245:  *
 2246:  * all adapters
 2247:  */
 2248: static int
 2249: vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
 2250: {
 2251:     u_int16_t off;
 2252:     int s;
 2253: 
 2254:     if (!vga_init_done)
 2255: 	return ENXIO;
 2256: 
 2257:     if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
 2258: 	return ENODEV;
 2259: 
 2260:     s = spltty();
 2261:     outb(adp->va_crtc_addr, 14);
 2262:     off = inb(adp->va_crtc_addr + 1);
 2263:     outb(adp->va_crtc_addr, 15);
 2264:     off = (off << 8) | inb(adp->va_crtc_addr + 1);
 2265:     splx(s);
 2266: 
 2267:     *row = off / adp->va_info.vi_width;
 2268:     *col = off % adp->va_info.vi_width;
 2269: 
 2270:     return 0;
 2271: }
 2272: 
 2273: /*
 2274:  * set_hw_cursor():
 2275:  * Move the hardware text cursor.  If col and row are both -1, 
 2276:  * the cursor won't be shown.
 2277:  *
 2278:  * all adapters
 2279:  */
 2280: static int
 2281: vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
 2282: {
 2283:     u_int16_t off;
 2284:     int s;
 2285: 
 2286:     if (!vga_init_done)
 2287: 	return ENXIO;
 2288: 
 2289:     if ((col == -1) && (row == -1)) {
 2290: 	off = -1;
 2291:     } else {
 2292: 	if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
 2293: 	    return ENODEV;
 2294: 	off = row*adp->va_info.vi_width + col;
 2295:     }
 2296: 
 2297:     s = spltty();
 2298:     outb(adp->va_crtc_addr, 14);
 2299:     outb(adp->va_crtc_addr + 1, off >> 8);
 2300:     outb(adp->va_crtc_addr, 15);
 2301:     outb(adp->va_crtc_addr + 1, off & 0x00ff);
 2302:     splx(s);
 2303: 
 2304:     return 0;
 2305: }
 2306: 
 2307: /*
 2308:  * set_hw_cursor_shape():
 2309:  * Change the shape of the hardware text cursor. If the height is
 2310:  * zero or negative, the cursor won't be shown.
 2311:  *
 2312:  * all adapters
 2313:  */
 2314: static int
 2315: vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
 2316: 			int celsize, int blink)
 2317: {
 2318:     int s;
 2319: 
 2320:     if (!vga_init_done)
 2321: 	return ENXIO;
 2322: 
 2323:     s = spltty();
 2324:     switch (adp->va_type) {
 2325:     case KD_VGA:
 2326:     case KD_CGA:
 2327:     case KD_MONO:
 2328:     case KD_HERCULES:
 2329:     default:
 2330: 	if (height <= 0) {
 2331: 	    /* make the cursor invisible */
 2332: 	    outb(adp->va_crtc_addr, 10);
 2333: 	    outb(adp->va_crtc_addr + 1, 32);
 2334: 	    outb(adp->va_crtc_addr, 11);
 2335: 	    outb(adp->va_crtc_addr + 1, 0);
 2336: 	} else {
 2337: 	    outb(adp->va_crtc_addr, 10);
 2338: 	    outb(adp->va_crtc_addr + 1, celsize - base - height);
 2339: 	    outb(adp->va_crtc_addr, 11);
 2340: 	    outb(adp->va_crtc_addr + 1, celsize - base - 1);
 2341: 	}
 2342: 	break;
 2343:     case KD_EGA:
 2344: 	if (height <= 0) {
 2345: 	    /* make the cursor invisible */
 2346: 	    outb(adp->va_crtc_addr, 10);
 2347: 	    outb(adp->va_crtc_addr + 1, celsize);
 2348: 	    outb(adp->va_crtc_addr, 11);
 2349: 	    outb(adp->va_crtc_addr + 1, 0);
 2350: 	} else {
 2351: 	    outb(adp->va_crtc_addr, 10);
 2352: 	    outb(adp->va_crtc_addr + 1, celsize - base - height);
 2353: 	    outb(adp->va_crtc_addr, 11);
 2354: 	    outb(adp->va_crtc_addr + 1, celsize - base);
 2355: 	}
 2356: 	break;
 2357:     }
 2358:     splx(s);
 2359: 
 2360:     return 0;
 2361: }
 2362: 
 2363: /*
 2364:  * blank_display()
 2365:  * Put the display in power save/power off mode.
 2366:  *
 2367:  * all adapters
 2368:  */
 2369: static int
 2370: vga_blank_display(video_adapter_t *adp, int mode)
 2371: {
 2372:     u_char val;
 2373:     int s;
 2374: 
 2375:     s = splhigh();
 2376:     switch (adp->va_type) {
 2377:     case KD_VGA:
 2378: 	switch (mode) {
 2379: 	case V_DISPLAY_SUSPEND:
 2380: 	case V_DISPLAY_STAND_BY:
 2381: 	    outb(TSIDX, 0x01);
 2382: 	    val = inb(TSREG);
 2383: 	    outb(TSIDX, 0x01);
 2384: 	    outb(TSREG, val | 0x20);
 2385: 	    outb(adp->va_crtc_addr, 0x17);
 2386: 	    val = inb(adp->va_crtc_addr + 1);
 2387: 	    outb(adp->va_crtc_addr + 1, val & ~0x80);
 2388: 	    break;
 2389: 	case V_DISPLAY_BLANK:
 2390: 	    outb(TSIDX, 0x01);
 2391: 	    val = inb(TSREG);
 2392: 	    outb(TSIDX, 0x01);
 2393: 	    outb(TSREG, val | 0x20);
 2394: 	    break;
 2395: 	case V_DISPLAY_ON:
 2396: 	    outb(TSIDX, 0x01);
 2397: 	    val = inb(TSREG);
 2398: 	    outb(TSIDX, 0x01);
 2399: 	    outb(TSREG, val & 0xDF);
 2400: 	    outb(adp->va_crtc_addr, 0x17);
 2401: 	    val = inb(adp->va_crtc_addr + 1);
 2402: 	    outb(adp->va_crtc_addr + 1, val | 0x80);
 2403: 	    break;
 2404: 	}
 2405: 	break;
 2406: 
 2407:     case KD_EGA:
 2408: 	/* no support yet */
 2409: 	splx(s);
 2410: 	return ENODEV;
 2411: 
 2412:     case KD_CGA:
 2413: 	switch (mode) {
 2414: 	case V_DISPLAY_SUSPEND:
 2415: 	case V_DISPLAY_STAND_BY:
 2416: 	case V_DISPLAY_BLANK:
 2417: 	    outb(adp->va_crtc_addr + 4, 0x25);
 2418: 	    break;
 2419: 	case V_DISPLAY_ON:
 2420: 	    outb(adp->va_crtc_addr + 4, 0x2d);
 2421: 	    break;
 2422: 	}
 2423: 	break;
 2424: 
 2425:     case KD_MONO:
 2426:     case KD_HERCULES:
 2427: 	switch (mode) {
 2428: 	case V_DISPLAY_SUSPEND:
 2429: 	case V_DISPLAY_STAND_BY:
 2430: 	case V_DISPLAY_BLANK:
 2431: 	    outb(adp->va_crtc_addr + 4, 0x21);
 2432: 	    break;
 2433: 	case V_DISPLAY_ON:
 2434: 	    outb(adp->va_crtc_addr + 4, 0x29);
 2435: 	    break;
 2436: 	}
 2437: 	break;
 2438:     default:
 2439: 	break;
 2440:     }
 2441:     splx(s);
 2442: 
 2443:     return 0;
 2444: }
 2445: 
 2446: /*
 2447:  * mmap():
 2448:  * Mmap frame buffer.
 2449:  *
 2450:  * all adapters
 2451:  */
 2452: static int
 2453: vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
 2454: {
 2455:     if (adp->va_info.vi_flags & V_INFO_LINEAR)
 2456: 	return -1;
 2457: 
 2458: #if VGA_DEBUG > 0
 2459:     printf("vga_mmap_buf(): window:0x%x, offset:0x%x\n", 
 2460: 	   adp->va_info.vi_window, offset);
 2461: #endif
 2462: 
 2463:     /* XXX: is this correct? */
 2464:     if (offset > adp->va_window_size - PAGE_SIZE)
 2465: 	return -1;
 2466: 
 2467: #ifdef __i386__
 2468:     return i386_btop(adp->va_info.vi_window + offset);
 2469: #endif
 2470: #ifdef __alpha__
 2471:     return alpha_btop(adp->va_info.vi_window + offset);
 2472: #endif
 2473: }
 2474: 
 2475: #ifndef VGA_NO_MODE_CHANGE
 2476: 
 2477: static void
 2478: planar_fill(video_adapter_t *adp, int val)
 2479: {
 2480:     int length;
 2481:     int at;			/* position in the frame buffer */
 2482:     int l;
 2483: 
 2484:     outw(GDCIDX, 0x0005);		/* read mode 0, write mode 0 */
 2485:     outw(GDCIDX, 0x0003);		/* data rotate/function select */
 2486:     outw(GDCIDX, 0x0f01);		/* set/reset enable */
 2487:     outw(GDCIDX, 0xff08);		/* bit mask */
 2488:     outw(GDCIDX, (val << 8) | 0x00);	/* set/reset */
 2489:     at = 0;
 2490:     length = adp->va_line_width*adp->va_info.vi_height;
 2491:     while (length > 0) {
 2492: 	l = imin(length, adp->va_window_size);
 2493: 	(*vidsw[adp->va_index]->set_win_org)(adp, at);
 2494: 	bzero_io(adp->va_window, l);
 2495: 	length -= l;
 2496: 	at += l;
 2497:     }
 2498:     outw(GDCIDX, 0x0000);		/* set/reset */
 2499:     outw(GDCIDX, 0x0001);		/* set/reset enable */
 2500: }
 2501: 
 2502: static void
 2503: packed_fill(video_adapter_t *adp, int val)
 2504: {
 2505:     int length;
 2506:     int at;			/* position in the frame buffer */
 2507:     int l;
 2508: 
 2509:     at = 0;
 2510:     length = adp->va_line_width*adp->va_info.vi_height;
 2511:     while (length > 0) {
 2512: 	l = imin(length, adp->va_window_size);
 2513: 	(*vidsw[adp->va_index]->set_win_org)(adp, at);
 2514: 	fill_io(val, adp->va_window, l);
 2515: 	length -= l;
 2516: 	at += l;
 2517:     }
 2518: }
 2519: 
 2520: static void
 2521: direct_fill(video_adapter_t *adp, int val)
 2522: {
 2523:     int length;
 2524:     int at;			/* position in the frame buffer */
 2525:     int l;
 2526: 
 2527:     at = 0;
 2528:     length = adp->va_line_width*adp->va_info.vi_height;
 2529:     while (length > 0) {
 2530: 	l = imin(length, adp->va_window_size);
 2531: 	(*vidsw[adp->va_index]->set_win_org)(adp, at);
 2532: 	switch (adp->va_info.vi_pixel_size) {
 2533: 	case sizeof(u_int16_t):
 2534: 	    fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
 2535: 	    break;
 2536: 	case 3:
 2537: 	    /* FIXME */
 2538: 	    break;
 2539: 	case sizeof(u_int32_t):
 2540: 	    filll_io(val, adp->va_window, l/sizeof(u_int32_t));
 2541: 	    break;
 2542: 	}
 2543: 	length -= l;
 2544: 	at += l;
 2545:     }
 2546: }
 2547: 
 2548: static int
 2549: vga_clear(video_adapter_t *adp)
 2550: {
 2551:     switch (adp->va_info.vi_mem_model) {
 2552:     case V_INFO_MM_TEXT:
 2553: 	/* do nothing? XXX */
 2554: 	break;
 2555:     case V_INFO_MM_PLANAR:
 2556: 	planar_fill(adp, 0);
 2557: 	break;
 2558:     case V_INFO_MM_PACKED:
 2559: 	packed_fill(adp, 0);
 2560: 	break;
 2561:     case V_INFO_MM_DIRECT:
 2562: 	direct_fill(adp, 0);
 2563: 	break;
 2564:     }
 2565:     return 0;
 2566: }
 2567: 
 2568: #ifdef notyet
 2569: static void
 2570: planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2571: {
 2572:     int banksize;
 2573:     int bank;
 2574:     int pos;
 2575:     int offset;			/* offset within window */
 2576:     int bx;
 2577:     int l;
 2578: 
 2579:     outw(GDCIDX, 0x0005);		/* read mode 0, write mode 0 */
 2580:     outw(GDCIDX, 0x0003);		/* data rotate/function select */
 2581:     outw(GDCIDX, 0x0f01);		/* set/reset enable */
 2582:     outw(GDCIDX, 0xff08);		/* bit mask */
 2583:     outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
 2584: 
 2585:     banksize = adp->va_window_size;
 2586:     bank = -1;
 2587:     while (cy > 0) {
 2588: 	pos = adp->va_line_width*y + x/8;
 2589: 	if (bank != pos/banksize) {
 2590: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2591: 	    bank = pos/banksize;
 2592: 	}
 2593: 	offset = pos%banksize;
 2594: 	bx = (x + cx)/8 - x/8;
 2595: 	if (x % 8) {
 2596: 	    outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
 2597: 	    writeb(adp->va_window + offset, 0);
 2598: 	    ++offset;
 2599: 	    --bx;
 2600: 	    if (offset >= banksize) {
 2601: 		offset = 0;
 2602: 		++bank;		/* next bank */
 2603: 		(*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2604: 	    }
 2605: 	    outw(GDCIDX, 0xff08);	/* bit mask */
 2606: 	}
 2607: 	while (bx > 0) {
 2608: 	    l = imin(bx, banksize);
 2609: 	    bzero_io(adp->va_window + offset, l);
 2610: 	    offset += l;
 2611: 	    bx -= l;
 2612: 	    if (offset >= banksize) {
 2613: 		offset = 0;
 2614: 		++bank;		/* next bank */
 2615: 		(*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2616: 	    }
 2617: 	}
 2618: 	if ((x + cx) % 8) {
 2619: 	    outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
 2620: 	    writeb(adp->va_window + offset, 0);
 2621: 	    ++offset;
 2622: 	    if (offset >= banksize) {
 2623: 		offset = 0;
 2624: 		++bank;		/* next bank */
 2625: 		(*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2626: 	    }
 2627: 	    outw(GDCIDX, 0xff08);	/* bit mask */
 2628: 	}
 2629: 	++y;
 2630: 	--cy;
 2631:     }
 2632: 
 2633:     outw(GDCIDX, 0xff08);		/* bit mask */
 2634:     outw(GDCIDX, 0x0000);		/* set/reset */
 2635:     outw(GDCIDX, 0x0001);		/* set/reset enable */
 2636: }
 2637: 
 2638: static void
 2639: packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2640: {
 2641:     int banksize;
 2642:     int bank;
 2643:     int pos;
 2644:     int offset;			/* offset within window */
 2645:     int end;
 2646: 
 2647:     banksize = adp->va_window_size;
 2648:     bank = -1;
 2649:     cx *= adp->va_info.vi_pixel_size;
 2650:     while (cy > 0) {
 2651: 	pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
 2652: 	if (bank != pos/banksize) {
 2653: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2654: 	    bank = pos/banksize;
 2655: 	}
 2656: 	offset = pos%banksize;
 2657: 	end = imin(offset + cx, banksize);
 2658: 	fill_io(val, adp->va_window + offset,
 2659: 		(end - offset)/adp->va_info.vi_pixel_size);
 2660: 	/* the line may cross the window boundary */
 2661: 	if (offset + cx > banksize) {
 2662: 	    ++bank;		/* next bank */
 2663: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2664: 	    end = offset + cx - banksize;
 2665: 	    fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
 2666: 	}
 2667: 	++y;
 2668: 	--cy;
 2669:     }
 2670: }
 2671: 
 2672: static void
 2673: direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2674: {
 2675:     int banksize;
 2676:     int bank;
 2677:     int pos;
 2678:     int offset;			/* offset within window */
 2679:     int end;
 2680: 
 2681:     /*
 2682:      * XXX: the function assumes that banksize is a muliple of
 2683:      * sizeof(u_int16_t).
 2684:      */
 2685:     banksize = adp->va_window_size;
 2686:     bank = -1;
 2687:     cx *= sizeof(u_int16_t);
 2688:     while (cy > 0) {
 2689: 	pos = adp->va_line_width*y + x*sizeof(u_int16_t);
 2690: 	if (bank != pos/banksize) {
 2691: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2692: 	    bank = pos/banksize;
 2693: 	}
 2694: 	offset = pos%banksize;
 2695: 	end = imin(offset + cx, banksize);
 2696: 	fillw_io(val, adp->va_window + offset,
 2697: 		 (end - offset)/sizeof(u_int16_t));
 2698: 	/* the line may cross the window boundary */
 2699: 	if (offset + cx > banksize) {
 2700: 	    ++bank;		/* next bank */
 2701: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2702: 	    end = offset + cx - banksize;
 2703: 	    fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
 2704: 	}
 2705: 	++y;
 2706: 	--cy;
 2707:     }
 2708: }
 2709: 
 2710: static void
 2711: direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2712: {
 2713:     int banksize;
 2714:     int bank;
 2715:     int pos;
 2716:     int offset;			/* offset within window */
 2717:     int end;
 2718:     int i;
 2719:     int j;
 2720:     u_int8_t b[3];
 2721: 
 2722:     b[0] = val & 0x0000ff;
 2723:     b[1] = (val >> 8) & 0x0000ff;
 2724:     b[2] = (val >> 16) & 0x0000ff;
 2725:     banksize = adp->va_window_size;
 2726:     bank = -1;
 2727:     cx *= 3;
 2728:     while (cy > 0) {
 2729: 	pos = adp->va_line_width*y + x*3;
 2730: 	if (bank != pos/banksize) {
 2731: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2732: 	    bank = pos/banksize;
 2733: 	}
 2734: 	offset = pos%banksize;
 2735: 	end = imin(offset + cx, banksize);
 2736: 	for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
 2737: 	    writeb(adp->va_window + j, b[i]);
 2738: 	}
 2739: 	/* the line may cross the window boundary */
 2740: 	if (offset + cx >= banksize) {
 2741: 	    ++bank;		/* next bank */
 2742: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2743: 	    j = 0;
 2744: 	    end = offset + cx - banksize;
 2745: 	    for (; j < end; i = (++i)%3, ++j) {
 2746: 		writeb(adp->va_window + j, b[i]);
 2747: 	    }
 2748: 	}
 2749: 	++y;
 2750: 	--cy;
 2751:     }
 2752: }
 2753: 
 2754: static void
 2755: direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2756: {
 2757:     int banksize;
 2758:     int bank;
 2759:     int pos;
 2760:     int offset;			/* offset within window */
 2761:     int end;
 2762: 
 2763:     /*
 2764:      * XXX: the function assumes that banksize is a muliple of
 2765:      * sizeof(u_int32_t).
 2766:      */
 2767:     banksize = adp->va_window_size;
 2768:     bank = -1;
 2769:     cx *= sizeof(u_int32_t);
 2770:     while (cy > 0) {
 2771: 	pos = adp->va_line_width*y + x*sizeof(u_int32_t);
 2772: 	if (bank != pos/banksize) {
 2773: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2774: 	    bank = pos/banksize;
 2775: 	}
 2776: 	offset = pos%banksize;
 2777: 	end = imin(offset + cx, banksize);
 2778: 	filll_io(val, adp->va_window + offset,
 2779: 		 (end - offset)/sizeof(u_int32_t));
 2780: 	/* the line may cross the window boundary */
 2781: 	if (offset + cx > banksize) {
 2782: 	    ++bank;		/* next bank */
 2783: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2784: 	    end = offset + cx - banksize;
 2785: 	    filll_io(val, adp->va_window, end/sizeof(u_int32_t));
 2786: 	}
 2787: 	++y;
 2788: 	--cy;
 2789:     }
 2790: }
 2791: 
 2792: static int
 2793: vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2794: {
 2795:     switch (adp->va_info.vi_mem_model) {
 2796:     case V_INFO_MM_TEXT:
 2797: 	/* do nothing? XXX */
 2798: 	break;
 2799:     case V_INFO_MM_PLANAR:
 2800: 	planar_fill_rect(adp, val, x, y, cx, cy);
 2801: 	break;
 2802:     case V_INFO_MM_PACKED:
 2803: 	packed_fill_rect(adp, val, x, y, cx, cy);
 2804: 	break;
 2805:     case V_INFO_MM_DIRECT:
 2806: 	switch (adp->va_info.vi_pixel_size) {
 2807: 	case sizeof(u_int16_t):
 2808: 	    direct_fill_rect16(adp, val, x, y, cx, cy);
 2809: 	    break;
 2810: 	case 3:
 2811: 	    direct_fill_rect24(adp, val, x, y, cx, cy);
 2812: 	    break;
 2813: 	case sizeof(u_int32_t):
 2814: 	    direct_fill_rect32(adp, val, x, y, cx, cy);
 2815: 	    break;
 2816: 	}
 2817: 	break;
 2818:     }
 2819:     return 0;
 2820: }
 2821: #else /* !notyet */
 2822: static int
 2823: vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2824: {
 2825:     return ENODEV;
 2826: }
 2827: #endif /* notyet */
 2828: 
 2829: static int
 2830: vga_bitblt(video_adapter_t *adp,...)
 2831: {
 2832:     /* FIXME */
 2833:     return ENODEV;
 2834: }
 2835: 
 2836: #endif /* !VGA_NO_MODE_CHANGE */
 2837: 
 2838: static int
 2839: get_palette(video_adapter_t *adp, int base, int count,
 2840: 	    u_char *red, u_char *green, u_char *blue, u_char *trans)
 2841: {
 2842:     u_char *r;
 2843:     u_char *g;
 2844:     u_char *b;
 2845: 
 2846:     if ((base < 0) || (base >= 256) || (base + count > 256))
 2847: 	return EINVAL;
 2848: 
 2849:     r = malloc(count*3, M_DEVBUF, M_WAITOK);
 2850:     g = r + count;
 2851:     b = g + count;
 2852:     if (vga_save_palette2(adp, base, count, r, g, b))
 2853: 	return ENODEV;
 2854:     copyout(r, red, count);
 2855:     copyout(g, green, count);
 2856:     copyout(b, blue, count);
 2857:     if (trans != NULL) {
 2858: 	bzero(r, count);
 2859: 	copyout(r, trans, count);
 2860:     }
 2861:     free(r, M_DEVBUF);
 2862: 
 2863:     return 0;
 2864: }
 2865: 
 2866: static int
 2867: set_palette(video_adapter_t *adp, int base, int count,
 2868: 	    u_char *red, u_char *green, u_char *blue, u_char *trans)
 2869: {
 2870:     u_char *r;
 2871:     u_char *g;
 2872:     u_char *b;
 2873:     int err;
 2874: 
 2875:     if ((base < 0) || (base >= 256) || (base + count > 256))
 2876: 	return EINVAL;
 2877: 
 2878:     r = malloc(count*3, M_DEVBUF, M_WAITOK);
 2879:     g = r + count;
 2880:     b = g + count;
 2881:     copyin(red, r, count);
 2882:     copyin(green, g, count);
 2883:     copyin(blue, b, count);
 2884:     err = vga_load_palette2(adp, base, count, r, g, b);
 2885:     free(r, M_DEVBUF);
 2886: 
 2887:     return (err ? ENODEV : 0);
 2888: }
 2889: 
 2890: static int
 2891: vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
 2892: {
 2893:     switch (cmd) {
 2894:     case FBIO_GETWINORG:	/* get frame buffer window origin */
 2895: 	*(u_int *)arg = 0;
 2896: 	return 0;
 2897: 
 2898:     case FBIO_SETWINORG:	/* set frame buffer window origin */
 2899: 	return ENODEV;
 2900: 
 2901:     case FBIO_SETDISPSTART:	/* set display start address */
 2902: 	return (set_display_start(adp, 
 2903: 				  ((video_display_start_t *)arg)->x,
 2904: 			  	  ((video_display_start_t *)arg)->y)
 2905: 		? ENODEV : 0);
 2906: 
 2907:     case FBIO_SETLINEWIDTH:	/* set scan line length in pixel */
 2908: 	return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
 2909: 
 2910:     case FBIO_GETPALETTE:	/* get color palette */
 2911: 	return get_palette(adp, ((video_color_palette_t *)arg)->index,
 2912: 			   ((video_color_palette_t *)arg)->count,
 2913: 			   ((video_color_palette_t *)arg)->red,
 2914: 			   ((video_color_palette_t *)arg)->green,
 2915: 			   ((video_color_palette_t *)arg)->blue,
 2916: 			   ((video_color_palette_t *)arg)->transparent);
 2917: 
 2918:     case FBIO_SETPALETTE:	/* set color palette */
 2919: 	return set_palette(adp, ((video_color_palette_t *)arg)->index,
 2920: 			   ((video_color_palette_t *)arg)->count,
 2921: 			   ((video_color_palette_t *)arg)->red,
 2922: 			   ((video_color_palette_t *)arg)->green,
 2923: 			   ((video_color_palette_t *)arg)->blue,
 2924: 			   ((video_color_palette_t *)arg)->transparent);
 2925: 
 2926:     case FBIOGTYPE:		/* get frame buffer type info. */
 2927: 	((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
 2928: 	((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
 2929: 	((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
 2930: 	((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
 2931: 	if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
 2932: 	    ((struct fbtype *)arg)->fb_cmsize = 0;
 2933: 	else
 2934: 	    ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
 2935: 	((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
 2936: 	return 0;
 2937: 
 2938:     case FBIOGETCMAP:		/* get color palette */
 2939: 	return get_palette(adp, ((struct fbcmap *)arg)->index,
 2940: 			   ((struct fbcmap *)arg)->count,
 2941: 			   ((struct fbcmap *)arg)->red,
 2942: 			   ((struct fbcmap *)arg)->green,
 2943: 			   ((struct fbcmap *)arg)->blue, NULL);
 2944: 
 2945:     case FBIOPUTCMAP:		/* set color palette */
 2946: 	return set_palette(adp, ((struct fbcmap *)arg)->index,
 2947: 			   ((struct fbcmap *)arg)->count,
 2948: 			   ((struct fbcmap *)arg)->red,
 2949: 			   ((struct fbcmap *)arg)->green,
 2950: 			   ((struct fbcmap *)arg)->blue, NULL);
 2951: 
 2952:     default:
 2953: 	return fb_commonioctl(adp, cmd, arg);
 2954:     }
 2955: }
 2956: 
 2957: static void
 2958: dump_buffer(u_char *buf, size_t len)
 2959: {
 2960:     int i;
 2961: 
 2962:     for(i = 0; i < len;) {
 2963: 	printf("%02x ", buf[i]);
 2964: 	if ((++i % 16) == 0)
 2965: 	    printf("\n");
 2966:     }
 2967: }
 2968: 
 2969: /*
 2970:  * diag():
 2971:  * Print some information about the video adapter and video modes,
 2972:  * with requested level of details.
 2973:  *
 2974:  * all adapters
 2975:  */
 2976: static int
 2977: vga_diag(video_adapter_t *adp, int level)
 2978: {
 2979:     u_char *mp;
 2980: #if FB_DEBUG > 1
 2981:     video_info_t info;
 2982:     int i;
 2983: #endif
 2984: 
 2985:     if (!vga_init_done)
 2986: 	return ENXIO;
 2987: 
 2988: #if FB_DEBUG > 1
 2989: #ifndef VGA_NO_BIOS
 2990:     printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
 2991: 	   rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
 2992:     printf("vga: CRTC:0x%x, video option:0x%02x, ",
 2993: 	   readw(BIOS_PADDRTOVADDR(0x463)),
 2994: 	   readb(BIOS_PADDRTOVADDR(0x487)));
 2995:     printf("rows:%d, cols:%d, font height:%d\n",
 2996: 	   readb(BIOS_PADDRTOVADDR(0x44a)),
 2997: 	   readb(BIOS_PADDRTOVADDR(0x484)) + 1,
 2998: 	   readb(BIOS_PADDRTOVADDR(0x485)));
 2999: #endif /* VGA_NO_BIOS */
 3000: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
 3001:     printf("vga: param table EGA/VGA:%p", video_mode_ptr);
 3002:     printf(", CGA/MDA:%p\n", video_mode_ptr2);
 3003:     printf("vga: rows_offset:%d\n", rows_offset);
 3004: #endif
 3005: #endif /* FB_DEBUG > 1 */
 3006: 
 3007:     fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
 3008: 
 3009: #if FB_DEBUG > 1
 3010:     if (adp->va_flags & V_ADP_MODECHANGE) {
 3011: 	for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
 3012: 	    if (bios_vmode[i].vi_mode == NA)
 3013: 		continue;
 3014: 	    if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
 3015: 		continue;
 3016: 	    fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
 3017: 	}
 3018:     } else {
 3019: 	vga_get_info(adp, adp->va_initial_mode, &info);	/* shouldn't fail */
 3020: 	fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
 3021:     }
 3022: #endif /* FB_DEBUG > 1 */
 3023: 
 3024:     if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
 3025: 	return 0;
 3026: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
 3027:     if (video_mode_ptr == NULL)
 3028: 	printf("vga%d: %s: WARNING: video mode switching is not "
 3029: 	       "fully supported on this adapter\n",
 3030: 	       adp->va_unit, adp->va_name);
 3031: #endif
 3032:     if (level <= 0)
 3033: 	return 0;
 3034: 
 3035:     if (adp->va_type == KD_VGA) {
 3036: 	printf("VGA parameters upon power-up\n");
 3037: 	dump_buffer(adpstate.regs, sizeof(adpstate.regs));
 3038: 	printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
 3039: 	dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
 3040:     }
 3041: 
 3042:     mp = get_mode_param(adp->va_initial_mode);
 3043:     if (mp == NULL)	/* this shouldn't be happening */
 3044: 	return 0;
 3045:     printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
 3046:     dump_buffer(mp, V_MODE_PARAM_SIZE);
 3047: 
 3048:     return 0;
 3049: }