File:  [DragonFly] / src / sys / dev / video / fb / vga.c
Revision 1.7: download - view: text, annotated - select for diffs
Tue Feb 24 19:42:19 2004 UTC (10 years, 1 month ago) by joerg
Branches: MAIN
CVS tags: HEAD, DragonFly_1_0_REL, DragonFly_1_0_RC1, DragonFly_1_0A_REL
Conditionalize filll_io and filll, they are only used with VGA_NO_MODE_CHANGE

    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 1.7 2004/02/24 19:42:19 joerg 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: 
  460: #ifndef VGA_NO_MODE_CHANGE
  461: static void filll_io(int val, vm_offset_t d, size_t size);
  462: #endif
  463: 
  464: #ifndef VGA_NO_MODE_CHANGE
  465: #ifdef VGA_WIDTH90
  466: static void set_width90(adp_state_t *params);
  467: #endif
  468: #endif /* !VGA_NO_MODE_CHANGE */
  469: 
  470: #ifndef VGA_NO_FONT_LOADING
  471: #define PARAM_BUFSIZE	6
  472: static void set_font_mode(video_adapter_t *adp, u_char *buf);
  473: static void set_normal_mode(video_adapter_t *adp, u_char *buf);
  474: #endif
  475: 
  476: #ifndef VGA_NO_MODE_CHANGE
  477: static void planar_fill(video_adapter_t *adp, int val);
  478: static void packed_fill(video_adapter_t *adp, int val);
  479: static void direct_fill(video_adapter_t *adp, int val);
  480: #ifdef notyet
  481: static void planar_fill_rect(video_adapter_t *adp, int val, int x, int y,
  482: 			     int cx, int cy);
  483: static void packed_fill_rect(video_adapter_t *adp, int val, int x, int y,
  484: 			     int cx, int cy);
  485: static void direct_fill_rect16(video_adapter_t *adp, int val, int x, int y,
  486: 			       int cx, int cy);
  487: static void direct_fill_rect24(video_adapter_t *adp, int val, int x, int y,
  488: 			       int cx, int cy);
  489: static void direct_fill_rect32(video_adapter_t *adp, int val, int x, int y,
  490: 			       int cx, int cy);
  491: #endif /* notyet */
  492: #endif /* !VGA_NO_MODE_CHANGE */
  493: 
  494: static void dump_buffer(u_char *buf, size_t len);
  495: 
  496: #define	ISMAPPED(pa, width)				\
  497: 	(((pa) <= (u_long)0x1000 - (width)) 		\
  498: 	 || ((pa) >= ISA_HOLE_START && (pa) <= 0x100000 - (width)))
  499: 
  500: #define	prologue(adp, flag, err)			\
  501: 	if (!vga_init_done || !((adp)->va_flags & (flag)))	\
  502: 	    return (err)
  503: 
  504: /* a backdoor for the console driver */
  505: static int
  506: vga_configure(int flags)
  507: {
  508:     int i;
  509: 
  510:     probe_adapters();
  511:     for (i = 0; i < biosadapters; ++i) {
  512: 	if (!probe_done(&biosadapter[i]))
  513: 	    continue;
  514: 	biosadapter[i].va_flags |= V_ADP_INITIALIZED;
  515: 	if (!config_done(&biosadapter[i])) {
  516: 	    if (vid_register(&biosadapter[i]) < 0)
  517: 		continue;
  518: 	    biosadapter[i].va_flags |= V_ADP_REGISTERED;
  519: 	}
  520:     }
  521:     if (vga_sub_configure != NULL)
  522: 	(*vga_sub_configure)(flags);
  523: 
  524:     return biosadapters;
  525: }
  526: 
  527: /* local subroutines */
  528: 
  529: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  530: /* construct the mode parameter map */
  531: static void
  532: map_mode_table(u_char *map[], u_char *table, int max)
  533: {
  534:     int i;
  535: 
  536:     for(i = 0; i < max; ++i)
  537: 	map[i] = table + i*V_MODE_PARAM_SIZE;
  538:     for(; i < V_MODE_MAP_SIZE; ++i)
  539: 	map[i] = NULL;
  540: }
  541: #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
  542: 
  543: static void
  544: clear_mode_map(video_adapter_t *adp, u_char *map[], int max, int color)
  545: {
  546:     video_info_t info;
  547:     int i;
  548: 
  549:     /*
  550:      * NOTE: we don't touch `bios_vmode[]' because it is shared
  551:      * by all adapters.
  552:      */
  553:     for(i = 0; i < max; ++i) {
  554: 	if (vga_get_info(adp, i, &info))
  555: 	    continue;
  556: 	if ((info.vi_flags & V_INFO_COLOR) != color)
  557: 	    map[i] = NULL;
  558:     }
  559: }
  560: 
  561: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  562: /* map the non-standard video mode to a known mode number */
  563: static int
  564: map_mode_num(int mode)
  565: {
  566:     static struct {
  567:         int from;
  568:         int to;
  569:     } mode_map[] = {
  570:         { M_ENH_B80x43, M_ENH_B80x25 },
  571:         { M_ENH_C80x43, M_ENH_C80x25 },
  572:         { M_VGA_M80x30, M_VGA_M80x25 },
  573:         { M_VGA_C80x30, M_VGA_C80x25 },
  574:         { M_VGA_M80x50, M_VGA_M80x25 },
  575:         { M_VGA_C80x50, M_VGA_C80x25 },
  576:         { M_VGA_M80x60, M_VGA_M80x25 },
  577:         { M_VGA_C80x60, M_VGA_C80x25 },
  578: #ifdef VGA_WIDTH90
  579:         { M_VGA_M90x25, M_VGA_M80x25 },
  580:         { M_VGA_C90x25, M_VGA_C80x25 },
  581:         { M_VGA_M90x30, M_VGA_M80x25 },
  582:         { M_VGA_C90x30, M_VGA_C80x25 },
  583:         { M_VGA_M90x43, M_ENH_B80x25 },
  584:         { M_VGA_C90x43, M_ENH_C80x25 },
  585:         { M_VGA_M90x50, M_VGA_M80x25 },
  586:         { M_VGA_C90x50, M_VGA_C80x25 },
  587:         { M_VGA_M90x60, M_VGA_M80x25 },
  588:         { M_VGA_C90x60, M_VGA_C80x25 },
  589: #endif
  590:         { M_VGA_MODEX,  M_VGA_CG320 },
  591:     };
  592:     int i;
  593: 
  594:     for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
  595:         if (mode_map[i].from == mode)
  596:             return mode_map[i].to;
  597:     }
  598:     return mode;
  599: }
  600: #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
  601: 
  602: /* map a generic video mode to a known mode number */
  603: static int
  604: map_gen_mode_num(int type, int color, int mode)
  605: {
  606:     static struct {
  607: 	int from;
  608: 	int to_color;
  609: 	int to_mono;
  610:     } mode_map[] = {
  611: 	{ M_TEXT_80x30,	M_VGA_C80x30, M_VGA_M80x30, },
  612: 	{ M_TEXT_80x43,	M_ENH_C80x43, M_ENH_B80x43, },
  613: 	{ M_TEXT_80x50,	M_VGA_C80x50, M_VGA_M80x50, },
  614: 	{ M_TEXT_80x60,	M_VGA_C80x60, M_VGA_M80x60, },
  615:     };
  616:     int i;
  617: 
  618:     if (mode == M_TEXT_80x25) {
  619: 	switch (type) {
  620: 
  621: 	case KD_VGA:
  622: 	    if (color)
  623: 		return M_VGA_C80x25;
  624: 	    else
  625: 		return M_VGA_M80x25;
  626: 	    break;
  627: 
  628: 	case KD_EGA:
  629: 	    if (color)
  630: 		return M_ENH_C80x25;
  631: 	    else
  632: 		return M_EGAMONO80x25;
  633: 	    break;
  634: 
  635: 	case KD_CGA:
  636: 	    return M_C80x25;
  637: 
  638: 	case KD_MONO:
  639: 	case KD_HERCULES:
  640: 	    return M_EGAMONO80x25;	/* XXX: this name is confusing */
  641: 
  642:  	default:
  643: 	    return -1;
  644: 	}
  645:     }
  646: 
  647:     for (i = 0; i < sizeof(mode_map)/sizeof(mode_map[0]); ++i) {
  648:         if (mode_map[i].from == mode)
  649:             return ((color) ? mode_map[i].to_color : mode_map[i].to_mono);
  650:     }
  651:     return mode;
  652: }
  653: 
  654: /* turn the BIOS video number into our video mode number */
  655: static int
  656: map_bios_mode_num(int type, int color, int bios_mode)
  657: {
  658:     static int cga_modes[7] = {
  659: 	M_B40x25, M_C40x25,		/* 0, 1 */
  660: 	M_B80x25, M_C80x25,		/* 2, 3 */
  661: 	M_BG320, M_CG320,
  662: 	M_BG640,
  663:     };
  664:     static int ega_modes[17] = {
  665: 	M_ENH_B40x25, M_ENH_C40x25,	/* 0, 1 */
  666: 	M_ENH_B80x25, M_ENH_C80x25,	/* 2, 3 */
  667: 	M_BG320, M_CG320,
  668: 	M_BG640,
  669: 	M_EGAMONO80x25,			/* 7 */
  670: 	8, 9, 10, 11, 12,
  671: 	M_CG320_D,
  672: 	M_CG640_E,
  673: 	M_ENHMONOAPA2,			/* XXX: video momery > 64K */
  674: 	M_ENH_CG640,			/* XXX: video momery > 64K */
  675:     };
  676:     static int vga_modes[20] = {
  677: 	M_VGA_C40x25, M_VGA_C40x25,	/* 0, 1 */
  678: 	M_VGA_C80x25, M_VGA_C80x25,	/* 2, 3 */
  679: 	M_BG320, M_CG320,
  680: 	M_BG640,
  681: 	M_VGA_M80x25,			/* 7 */
  682: 	8, 9, 10, 11, 12,
  683: 	M_CG320_D,
  684: 	M_CG640_E,
  685: 	M_ENHMONOAPA2,
  686: 	M_ENH_CG640,
  687: 	M_BG640x480, M_CG640x480, 
  688: 	M_VGA_CG320,
  689:     };
  690: 
  691:     switch (type) {
  692: 
  693:     case KD_VGA:
  694: 	if (bios_mode < sizeof(vga_modes)/sizeof(vga_modes[0]))
  695: 	    return vga_modes[bios_mode];
  696: 	else if (color)
  697: 	    return M_VGA_C80x25;
  698: 	else
  699: 	    return M_VGA_M80x25;
  700: 	break;
  701: 
  702:     case KD_EGA:
  703: 	if (bios_mode < sizeof(ega_modes)/sizeof(ega_modes[0]))
  704: 	    return ega_modes[bios_mode];
  705: 	else if (color)
  706: 	    return M_ENH_C80x25;
  707: 	else
  708: 	    return M_EGAMONO80x25;
  709: 	break;
  710: 
  711:     case KD_CGA:
  712: 	if (bios_mode < sizeof(cga_modes)/sizeof(cga_modes[0]))
  713: 	    return cga_modes[bios_mode];
  714: 	else
  715: 	    return M_C80x25;
  716: 	break;
  717: 
  718:     case KD_MONO:
  719:     case KD_HERCULES:
  720: 	return M_EGAMONO80x25;		/* XXX: this name is confusing */
  721: 
  722:     default:
  723: 	break;
  724:     }
  725:     return -1;
  726: }
  727: 
  728: /* look up a parameter table entry */
  729: static u_char 
  730: *get_mode_param(int mode)
  731: {
  732: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  733:     if (mode >= V_MODE_MAP_SIZE)
  734: 	mode = map_mode_num(mode);
  735: #endif
  736:     if ((mode >= 0) && (mode < V_MODE_MAP_SIZE))
  737: 	return mode_map[mode];
  738:     else
  739: 	return NULL;
  740: }
  741: 
  742: #ifndef VGA_NO_BIOS
  743: static void
  744: fill_adapter_param(int code, video_adapter_t *adp)
  745: {
  746:     static struct {
  747: 	int primary;
  748: 	int secondary;
  749:     } dcc[] = {
  750: 	{ DCC_MONO, 			DCC_EGA40 /* CGA monitor */ },
  751: 	{ DCC_MONO, 			DCC_EGA80 /* CGA monitor */ },
  752: 	{ DCC_MONO, 			DCC_EGA80 },
  753: 	{ DCC_MONO, 			DCC_EGA80 },
  754: 	{ DCC_CGA40, 			DCC_EGAMONO },
  755: 	{ DCC_CGA80, 			DCC_EGAMONO },
  756: 	{ DCC_EGA40 /* CGA monitor */, 	DCC_MONO},
  757: 	{ DCC_EGA80 /* CGA monitor */, 	DCC_MONO},
  758: 	{ DCC_EGA80,			DCC_MONO },	
  759: 	{ DCC_EGA80, 			DCC_MONO },
  760: 	{ DCC_EGAMONO, 			DCC_CGA40 },
  761: 	{ DCC_EGAMONO, 			DCC_CGA80 },
  762:     };
  763: 
  764:     if ((code < 0) || (code >= sizeof(dcc)/sizeof(dcc[0]))) {
  765: 	adp[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
  766: 	adp[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
  767:     } else {
  768: 	adp[V_ADP_PRIMARY] = adapter_init_value[dcc[code].primary];
  769: 	adp[V_ADP_SECONDARY] = adapter_init_value[dcc[code].secondary];
  770:     }
  771: }
  772: #endif /* VGA_NO_BIOS */
  773: 
  774: static int
  775: verify_adapter(video_adapter_t *adp)
  776: {
  777:     vm_offset_t buf;
  778:     u_int16_t v;
  779: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  780:     u_int32_t p;
  781: #endif
  782: 
  783:     buf = BIOS_PADDRTOVADDR(adp->va_window);
  784:     v = readw(buf);
  785:     writew(buf, 0xA55A);
  786:     if (readw(buf) != 0xA55A)
  787: 	return ENXIO;
  788:     writew(buf, v);
  789: 
  790:     switch (adp->va_type) {
  791: 
  792:     case KD_EGA:
  793: 	outb(adp->va_crtc_addr, 7);
  794: 	if (inb(adp->va_crtc_addr) == 7) {
  795: 	    adp->va_type = KD_VGA;
  796: 	    adp->va_name = "vga";
  797: 	    adp->va_flags |= V_ADP_STATESAVE | V_ADP_PALETTE;
  798: 	}
  799: 	adp->va_flags |= V_ADP_STATELOAD | V_ADP_BORDER;
  800: 	/* the color adapter may be in the 40x25 mode... XXX */
  801: 
  802: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  803: 	/* get the BIOS video mode pointer */
  804: 	p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8);
  805: 	p = BIOS_SADDRTOLADDR(p);
  806: 	if (ISMAPPED(p, sizeof(u_int32_t))) {
  807: 	    p = *(u_int32_t *)BIOS_PADDRTOVADDR(p);
  808: 	    p = BIOS_SADDRTOLADDR(p);
  809: 	    if (ISMAPPED(p, V_MODE_PARAM_SIZE))
  810: 		video_mode_ptr = (u_char *)BIOS_PADDRTOVADDR(p);
  811: 	}
  812: #endif
  813: 	break;
  814: 
  815:     case KD_CGA:
  816: 	adp->va_flags |= V_ADP_COLOR | V_ADP_BORDER;
  817: 	/* may be in the 40x25 mode... XXX */
  818: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  819: 	/* get the BIOS video mode pointer */
  820: 	p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
  821: 	p = BIOS_SADDRTOLADDR(p);
  822: 	video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
  823: #endif
  824: 	break;
  825: 
  826:     case KD_MONO:
  827: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  828: 	/* get the BIOS video mode pointer */
  829: 	p = *(u_int32_t *)BIOS_PADDRTOVADDR(0x1d*4);
  830: 	p = BIOS_SADDRTOLADDR(p);
  831: 	video_mode_ptr2 = (u_char *)BIOS_PADDRTOVADDR(p);
  832: #endif
  833: 	break;
  834:     }
  835: 
  836:     return 0;
  837: }
  838: 
  839: static void
  840: update_adapter_info(video_adapter_t *adp, video_info_t *info)
  841: {
  842:     adp->va_flags &= ~V_ADP_COLOR;
  843:     adp->va_flags |= 
  844: 	(info->vi_flags & V_INFO_COLOR) ? V_ADP_COLOR : 0;
  845:     adp->va_crtc_addr =
  846: 	(adp->va_flags & V_ADP_COLOR) ? COLOR_CRTC : MONO_CRTC;
  847:     adp->va_window = BIOS_PADDRTOVADDR(info->vi_window);
  848:     adp->va_window_size = info->vi_window_size;
  849:     adp->va_window_gran = info->vi_window_gran;
  850:     adp->va_window_orig = 0;
  851:     /* XXX */
  852:     adp->va_buffer = info->vi_buffer;
  853:     adp->va_buffer_size = info->vi_buffer_size;
  854:     if (info->vi_mem_model == V_INFO_MM_VGAX) {
  855: 	adp->va_line_width = info->vi_width/2;
  856:     } else if (info->vi_flags & V_INFO_GRAPHICS) {
  857: 	switch (info->vi_depth/info->vi_planes) {
  858: 	case 1:
  859: 	    adp->va_line_width = info->vi_width/8;
  860: 	    break;
  861: 	case 2:
  862: 	    adp->va_line_width = info->vi_width/4;
  863: 	    break;
  864: 	case 4:
  865: 	    adp->va_line_width = info->vi_width/2;
  866: 	    break;
  867: 	case 8:
  868: 	default: /* shouldn't happen */
  869: 	    adp->va_line_width = info->vi_width;
  870: 	    break;
  871: 	}
  872:     } else {
  873: 	adp->va_line_width = info->vi_width;
  874:     }
  875:     adp->va_disp_start.x = 0;
  876:     adp->va_disp_start.y = 0;
  877:     bcopy(info, &adp->va_info, sizeof(adp->va_info));
  878: }
  879: 
  880: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  881: /* compare two parameter table entries */
  882: static int 
  883: comp_adpregs(u_char *buf1, u_char *buf2)
  884: {
  885:     static struct {
  886:         u_char mask;
  887:     } params[V_MODE_PARAM_SIZE] = {
  888: 	{0xff}, {0x00}, {0xff}, 		/* COLS}, ROWS}, POINTS */
  889: 	{0x00}, {0x00}, 			/* page length */
  890: 	{0xfe}, {0xff}, {0xff}, {0xff},		/* sequencer registers */
  891: 	{0xf3},					/* misc register */
  892: 	{0xff}, {0xff}, {0xff}, {0x7f}, {0xff},	/* CRTC */
  893: 	{0xff}, {0xff}, {0xff}, {0x7f}, {0xff},
  894: 	{0x00}, {0x00}, {0x00}, {0x00}, {0x00},
  895: 	{0x00}, {0xff}, {0x7f}, {0xff}, {0xff},
  896: 	{0x7f}, {0xff}, {0xff}, {0xef}, {0xff},
  897: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},	/* attribute controller regs */
  898: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},
  899: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},
  900: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xf0},
  901: 	{0xff}, {0xff}, {0xff}, {0xff}, {0xff},	/* GDC register */
  902: 	{0xff}, {0xff}, {0xff}, {0xff}, 
  903:     }; 
  904:     int identical = TRUE;
  905:     int i;
  906: 
  907:     if ((buf1 == NULL) || (buf2 == NULL))
  908: 	return COMP_DIFFERENT;
  909: 
  910:     for (i = 0; i < sizeof(params)/sizeof(params[0]); ++i) {
  911: 	if (params[i].mask == 0)	/* don't care */
  912: 	    continue;
  913: 	if ((buf1[i] & params[i].mask) != (buf2[i] & params[i].mask))
  914: 	    return COMP_DIFFERENT;
  915: 	if (buf1[i] != buf2[i])
  916: 	    identical = FALSE;
  917:     }
  918:     return (identical) ? COMP_IDENTICAL : COMP_SIMILAR;
  919: }
  920: #endif /* !VGA_NO_BIOS && !VGA_NO_MODE_CHANGE */
  921: 
  922: /* probe video adapters and return the number of detected adapters */
  923: static int
  924: probe_adapters(void)
  925: {
  926:     video_adapter_t *adp;
  927:     video_info_t info;
  928: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
  929:     u_char *mp;
  930: #endif
  931:     int i;
  932: 
  933:     /* do this test only once */
  934:     if (vga_init_done)
  935: 	return biosadapters;
  936:     vga_init_done = TRUE;
  937: 
  938:     /* 
  939:      * Locate display adapters. 
  940:      * The AT architecture supports upto two adapters. `syscons' allows
  941:      * the following combinations of adapters: 
  942:      *     1) MDA + CGA
  943:      *     2) MDA + EGA/VGA color 
  944:      *     3) CGA + EGA/VGA mono
  945:      * Note that `syscons' doesn't bother with MCGA as it is only
  946:      * avaiable for low end PS/2 models which has 80286 or earlier CPUs,
  947:      * thus, they are not running FreeBSD!
  948:      * When there are two adapaters in the system, one becomes `primary'
  949:      * and the other `secondary'. The EGA adapter has a set of DIP 
  950:      * switches on board for this information and the EGA BIOS copies 
  951:      * it in the BIOS data area BIOSDATA_VIDEOSWITCH (40:88). 
  952:      * The VGA BIOS has more sophisticated mechanism and has this 
  953:      * information in BIOSDATA_DCCINDEX (40:8a), but it also maintains 
  954:      * compatibility with the EGA BIOS by updating BIOSDATA_VIDEOSWITCH.
  955:      */
  956: 
  957:     /* 
  958:      * Check rtc and BIOS data area.
  959:      * XXX: we don't use BIOSDATA_EQUIPMENT, since it is not a dead
  960:      * copy of RTC_EQUIPMENT.  Bits 4 and 5 of ETC_EQUIPMENT are
  961:      * zeros for EGA and VGA.  However, the EGA/VGA BIOS sets
  962:      * these bits in BIOSDATA_EQUIPMENT according to the monitor
  963:      * type detected.
  964:      */
  965: #ifndef VGA_NO_BIOS
  966:     if (*(u_int32_t *)BIOS_PADDRTOVADDR(0x4a8)) {
  967: 	/* EGA/VGA BIOS is present */
  968: 	fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 
  969: 			   biosadapter);
  970:     } else {
  971: 	switch ((rtcin(RTC_EQUIPMENT) >> 4) & 3) {	/* bit 4 and 5 */
  972: 	case 0:
  973: 	    /* EGA/VGA: shouldn't be happening */
  974: 	    fill_adapter_param(readb(BIOS_PADDRTOVADDR(0x488)) & 0x0f, 
  975: 			       biosadapter);
  976: 	    break;
  977: 	case 1:
  978: 	    /* CGA 40x25 */
  979: 	    /* FIXME: switch to the 80x25 mode? XXX */
  980: 	    biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA40];
  981: 	    biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
  982: 	    break;
  983: 	case 2:
  984: 	    /* CGA 80x25 */
  985: 	    biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_CGA80];
  986: 	    biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
  987: 	    break;
  988: 	case 3:
  989: 	    /* MDA */
  990: 	    biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_MONO];
  991: 	    biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_CGA80];
  992: 	    break;
  993: 	}
  994:     }
  995: #else
  996:     /* assume EGA/VGA? XXX */
  997:     biosadapter[V_ADP_PRIMARY] = adapter_init_value[DCC_EGA80];
  998:     biosadapter[V_ADP_SECONDARY] = adapter_init_value[DCC_MONO];
  999: #endif /* VGA_NO_BIOS */
 1000: 
 1001:     biosadapters = 0;
 1002:     if (verify_adapter(&biosadapter[V_ADP_SECONDARY]) == 0) {
 1003: 	++biosadapters;
 1004: 	biosadapter[V_ADP_SECONDARY].va_flags |= V_ADP_PROBED;
 1005: 	biosadapter[V_ADP_SECONDARY].va_mode = 
 1006: 	    biosadapter[V_ADP_SECONDARY].va_initial_mode =
 1007: 	    map_bios_mode_num(biosadapter[V_ADP_SECONDARY].va_type, 
 1008: 			      biosadapter[V_ADP_SECONDARY].va_flags
 1009: 				  & V_ADP_COLOR,
 1010: 			      biosadapter[V_ADP_SECONDARY].va_initial_bios_mode);
 1011:     } else {
 1012: 	biosadapter[V_ADP_SECONDARY].va_type = -1;
 1013:     }
 1014:     if (verify_adapter(&biosadapter[V_ADP_PRIMARY]) == 0) {
 1015: 	++biosadapters;
 1016: 	biosadapter[V_ADP_PRIMARY].va_flags |= V_ADP_PROBED;
 1017: #ifndef VGA_NO_BIOS
 1018: 	biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 
 1019: 	    readb(BIOS_PADDRTOVADDR(0x449));
 1020: #else
 1021: 	biosadapter[V_ADP_PRIMARY].va_initial_bios_mode = 3;	/* XXX */
 1022: #endif
 1023: 	biosadapter[V_ADP_PRIMARY].va_mode = 
 1024: 	    biosadapter[V_ADP_PRIMARY].va_initial_mode =
 1025: 	    map_bios_mode_num(biosadapter[V_ADP_PRIMARY].va_type, 
 1026: 			      biosadapter[V_ADP_PRIMARY].va_flags & V_ADP_COLOR,
 1027: 			      biosadapter[V_ADP_PRIMARY].va_initial_bios_mode);
 1028:     } else {
 1029: 	biosadapter[V_ADP_PRIMARY] = biosadapter[V_ADP_SECONDARY];
 1030: 	biosadapter[V_ADP_SECONDARY].va_type = -1;
 1031:     }
 1032:     if (biosadapters == 0)
 1033: 	return biosadapters;
 1034:     biosadapter[V_ADP_PRIMARY].va_unit = V_ADP_PRIMARY;
 1035:     biosadapter[V_ADP_SECONDARY].va_unit = V_ADP_SECONDARY;
 1036: 
 1037: #if 0 /* we don't need these... */
 1038:     fb_init_struct(&biosadapter[V_ADP_PRIMARY], ...);
 1039:     fb_init_struct(&biosadapter[V_ADP_SECONDARY], ...);
 1040: #endif
 1041: 
 1042: #if notyet
 1043:     /*
 1044:      * We cannot have two video adapter of the same type; there must be
 1045:      * only one of color or mono adapter, or one each of them.
 1046:      */
 1047:     if (biosadapters > 1) {
 1048: 	if (!((biosadapter[0].va_flags ^ biosadapter[1].va_flags)
 1049: 	      & V_ADP_COLOR))
 1050: 	    /* we have two mono or color adapters!! */
 1051: 	    return (biosadapters = 0);
 1052:     }
 1053: #endif
 1054: 
 1055:     /*
 1056:      * Ensure a zero start address.  This is mainly to recover after
 1057:      * switching from pcvt using userconfig().  The registers are w/o
 1058:      * for old hardware so it's too hard to relocate the active screen
 1059:      * memory.
 1060:      * This must be done before vga_save_state() for VGA.
 1061:      */
 1062:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 12);
 1063:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
 1064:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr, 13);
 1065:     outb(biosadapter[V_ADP_PRIMARY].va_crtc_addr + 1, 0);
 1066: 
 1067:     /* the video mode parameter table in EGA/VGA BIOS */
 1068:     /* NOTE: there can be only one EGA/VGA, wheather color or mono,
 1069:      * recognized by the video BIOS.
 1070:      */
 1071:     if ((biosadapter[V_ADP_PRIMARY].va_type == KD_EGA) ||
 1072: 	(biosadapter[V_ADP_PRIMARY].va_type == KD_VGA)) {
 1073: 	adp = &biosadapter[V_ADP_PRIMARY];
 1074:     } else if ((biosadapter[V_ADP_SECONDARY].va_type == KD_EGA) ||
 1075: 	       (biosadapter[V_ADP_SECONDARY].va_type == KD_VGA)) {
 1076: 	adp = &biosadapter[V_ADP_SECONDARY];
 1077:     } else {
 1078: 	adp = NULL;
 1079:     }
 1080:     bzero(mode_map, sizeof(mode_map));
 1081:     if (adp != NULL) {
 1082: 	if (adp->va_type == KD_VGA) {
 1083: 	    vga_save_state(adp, &adpstate, sizeof(adpstate));
 1084: #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
 1085: 	    mode_map[adp->va_initial_mode] = adpstate.regs;
 1086: 	    rows_offset = 1;
 1087: #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1088: 	    if (video_mode_ptr == NULL) {
 1089: 		mode_map[adp->va_initial_mode] = adpstate.regs;
 1090: 		rows_offset = 1;
 1091: 	    } else {
 1092: 		/* discard the table if we are not familiar with it... */
 1093: 		map_mode_table(mode_map, video_mode_ptr, M_VGA_CG320 + 1);
 1094: 		mp = get_mode_param(adp->va_initial_mode);
 1095: 		if (mp != NULL)
 1096: 		    bcopy(mp, adpstate2.regs, sizeof(adpstate2.regs));
 1097: 		switch (comp_adpregs(adpstate.regs, mp)) {
 1098: 		case COMP_IDENTICAL:
 1099: 		    /*
 1100: 		     * OK, this parameter table looks reasonably familiar
 1101: 		     * to us...
 1102: 		     */
 1103: 		    /* 
 1104: 		     * This is a kludge for Toshiba DynaBook SS433 
 1105: 		     * whose BIOS video mode table entry has the actual # 
 1106: 		     * of rows at the offset 1; BIOSes from other 
 1107: 		     * manufacturers store the # of rows - 1 there. XXX
 1108: 		     */
 1109: 		    rows_offset = adpstate.regs[1] + 1 - mp[1];
 1110: 		    break;
 1111: 
 1112: 		case COMP_SIMILAR:
 1113: 		    /*
 1114: 		     * Not exactly the same, but similar enough to be
 1115: 		     * trusted. However, use the saved register values
 1116: 		     * for the initial mode and other modes which are
 1117: 		     * based on the initial mode.
 1118: 		     */
 1119: 		    mode_map[adp->va_initial_mode] = adpstate.regs;
 1120: 		    rows_offset = adpstate.regs[1] + 1 - mp[1];
 1121: 		    adpstate.regs[1] -= rows_offset - 1;
 1122: 		    break;
 1123: 
 1124: 		case COMP_DIFFERENT:
 1125: 		default:
 1126: 		    /*
 1127: 		     * Don't use the paramter table in BIOS. It doesn't
 1128: 		     * look familiar to us. Video mode switching is allowed
 1129: 		     * only if the new mode is the same as or based on
 1130: 		     * the initial mode. 
 1131: 		     */
 1132: 		    video_mode_ptr = NULL;
 1133: 		    bzero(mode_map, sizeof(mode_map));
 1134: 		    mode_map[adp->va_initial_mode] = adpstate.regs;
 1135: 		    rows_offset = 1;
 1136: 		    break;
 1137: 		}
 1138: 	    }
 1139: #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1140: 
 1141: #ifndef VGA_NO_MODE_CHANGE
 1142: 	    adp->va_flags |= V_ADP_MODECHANGE;
 1143: #endif
 1144: #ifndef VGA_NO_FONT_LOADING
 1145: 	    adp->va_flags |= V_ADP_FONT;
 1146: #endif
 1147: 	} else if (adp->va_type == KD_EGA) {
 1148: #if defined(VGA_NO_BIOS) || defined(VGA_NO_MODE_CHANGE)
 1149: 	    rows_offset = 1;
 1150: #else /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1151: 	    if (video_mode_ptr == NULL) {
 1152: 		rows_offset = 1;
 1153: 	    } else {
 1154: 		map_mode_table(mode_map, video_mode_ptr, M_ENH_C80x25 + 1);
 1155: 		/* XXX how can one validate the EGA table... */
 1156: 		mp = get_mode_param(adp->va_initial_mode);
 1157: 		if (mp != NULL) {
 1158: 		    adp->va_flags |= V_ADP_MODECHANGE;
 1159: #ifndef VGA_NO_FONT_LOADING
 1160: 		    adp->va_flags |= V_ADP_FONT;
 1161: #endif
 1162: 		    rows_offset = 1;
 1163: 		} else {
 1164: 		    /*
 1165: 		     * This is serious. We will not be able to switch video
 1166: 		     * modes at all...
 1167: 		     */
 1168: 		    video_mode_ptr = NULL;
 1169: 		    bzero(mode_map, sizeof(mode_map));
 1170: 		    rows_offset = 1;
 1171:                 }
 1172: 	    }
 1173: #endif /* VGA_NO_BIOS || VGA_NO_MODE_CHANGE */
 1174: 	}
 1175:     }
 1176: 
 1177:     /* remove conflicting modes if we have more than one adapter */
 1178:     if (biosadapters > 0) {
 1179: 	for (i = 0; i < biosadapters; ++i) {
 1180: 	    if (!(biosadapter[i].va_flags & V_ADP_MODECHANGE))
 1181: 		continue;
 1182: 	    clear_mode_map(&biosadapter[i], mode_map, M_VGA_CG320 + 1,
 1183: 			   (biosadapter[i].va_flags & V_ADP_COLOR) ? 
 1184: 			       V_INFO_COLOR : 0);
 1185: 	    if ((biosadapter[i].va_type == KD_VGA)
 1186: 		|| (biosadapter[i].va_type == KD_EGA)) {
 1187: 		biosadapter[i].va_io_base =
 1188: 		    (biosadapter[i].va_flags & V_ADP_COLOR) ?
 1189: 			IO_VGA : IO_MDA;
 1190: 		biosadapter[i].va_io_size = 32;
 1191: 	    }
 1192: 	}
 1193:     }
 1194: 
 1195:     /* buffer address */
 1196:     vga_get_info(&biosadapter[V_ADP_PRIMARY],
 1197: 		 biosadapter[V_ADP_PRIMARY].va_initial_mode, &info);
 1198:     info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
 1199:     update_adapter_info(&biosadapter[V_ADP_PRIMARY], &info);
 1200: 
 1201:     if (biosadapters > 1) {
 1202: 	vga_get_info(&biosadapter[V_ADP_SECONDARY],
 1203: 		     biosadapter[V_ADP_SECONDARY].va_initial_mode, &info);
 1204: 	info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
 1205: 	update_adapter_info(&biosadapter[V_ADP_SECONDARY], &info);
 1206:     }
 1207: 
 1208:     /*
 1209:      * XXX: we should verify the following values for the primary adapter...
 1210:      * crtc I/O port address: *(u_int16_t *)BIOS_PADDRTOVADDR(0x463);
 1211:      * color/mono display: (*(u_int8_t *)BIOS_PADDRTOVADDR(0x487) & 0x02) 
 1212:      *                     ? 0 : V_ADP_COLOR;
 1213:      * columns: *(u_int8_t *)BIOS_PADDRTOVADDR(0x44a);
 1214:      * rows: *(u_int8_t *)BIOS_PADDRTOVADDR(0x484);
 1215:      * font size: *(u_int8_t *)BIOS_PADDRTOVADDR(0x485);
 1216:      * buffer size: *(u_int16_t *)BIOS_PADDRTOVADDR(0x44c);
 1217:      */
 1218: 
 1219:     return biosadapters;
 1220: }
 1221: 
 1222: /* set the scan line length in pixel */
 1223: static int
 1224: set_line_length(video_adapter_t *adp, int pixel)
 1225: {
 1226:     u_char *mp;
 1227:     int ppw;	/* pixels per word */
 1228:     int bpl;	/* bytes per line */
 1229:     int count;
 1230: 
 1231:     if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
 1232: 	return ENODEV;
 1233:     mp = get_mode_param(adp->va_mode);
 1234:     if (mp == NULL)
 1235: 	return EINVAL;
 1236: 
 1237:     switch (adp->va_info.vi_mem_model) {
 1238:     case V_INFO_MM_PLANAR:
 1239: 	ppw = 16/(adp->va_info.vi_depth/adp->va_info.vi_planes);
 1240: 	count = (pixel + ppw - 1)/ppw/2;
 1241: 	bpl = ((pixel + ppw - 1)/ppw/2)*4;
 1242: 	break;
 1243:     case V_INFO_MM_PACKED:
 1244: 	count = (pixel + 7)/8;
 1245: 	bpl = ((pixel + 7)/8)*8;
 1246: 	break;
 1247:     case V_INFO_MM_TEXT:
 1248: 	count = (pixel + 7)/8;			/* columns */
 1249: 	bpl = (pixel + 7)/8;			/* columns */
 1250: 	break;
 1251:     default:
 1252: 	return ENODEV;
 1253:     }
 1254: 
 1255:     if (mp[10 + 0x17] & 0x40)			/* CRTC mode control reg */
 1256: 	count *= 2;				/* byte mode */
 1257:     outb(adp->va_crtc_addr, 0x13);
 1258:     outb(adp->va_crtc_addr + 1, count);
 1259:     adp->va_line_width = bpl;
 1260: 
 1261:     return 0;
 1262: }
 1263: 
 1264: static int
 1265: set_display_start(video_adapter_t *adp, int x, int y)
 1266: {
 1267:     int off;	/* byte offset (graphics mode)/word offset (text mode) */
 1268:     int poff;	/* pixel offset */
 1269:     int roff;	/* row offset */
 1270:     int ppb;	/* pixels per byte */
 1271: 
 1272:     if ((adp->va_type != KD_VGA) && (adp->va_type != KD_EGA))
 1273: 	x &= ~7;
 1274:     if (adp->va_info.vi_flags & V_INFO_GRAPHICS) {
 1275: 	ppb = 8/(adp->va_info.vi_depth/adp->va_info.vi_planes);
 1276: 	off = y*adp->va_line_width + x/ppb;
 1277: 	roff = 0;
 1278: 	poff = x%ppb;
 1279:     } else {
 1280: 	if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
 1281: 	    outb(TSIDX, 1);
 1282: 	    if (inb(TSREG) & 1)
 1283: 		ppb = 9;
 1284: 	    else
 1285: 		ppb = 8;
 1286: 	} else {
 1287: 	    ppb = 8;
 1288: 	}
 1289: 	off = y/adp->va_info.vi_cheight*adp->va_line_width + x/ppb;
 1290: 	roff = y%adp->va_info.vi_cheight;
 1291: 	/* FIXME: is this correct? XXX */
 1292: 	if (ppb == 8)
 1293: 	    poff = x%ppb;
 1294: 	else
 1295: 	    poff = (x + 8)%ppb;
 1296:     }
 1297: 
 1298:     /* start address */
 1299:     outb(adp->va_crtc_addr, 0xc);		/* high */
 1300:     outb(adp->va_crtc_addr + 1, off >> 8);
 1301:     outb(adp->va_crtc_addr, 0xd);		/* low */
 1302:     outb(adp->va_crtc_addr + 1, off & 0xff);
 1303: 
 1304:     /* horizontal pel pan */
 1305:     if ((adp->va_type == KD_VGA) || (adp->va_type == KD_EGA)) {
 1306: 	inb(adp->va_crtc_addr + 6);
 1307: 	outb(ATC, 0x13 | 0x20);
 1308: 	outb(ATC, poff);
 1309: 	inb(adp->va_crtc_addr + 6);
 1310: 	outb(ATC, 0x20);
 1311:     }
 1312: 
 1313:     /* preset raw scan */
 1314:     outb(adp->va_crtc_addr, 8);
 1315:     outb(adp->va_crtc_addr + 1, roff);
 1316: 
 1317:     adp->va_disp_start.x = x;
 1318:     adp->va_disp_start.y = y;
 1319:     return 0;
 1320: }
 1321: 
 1322: #ifndef VGA_NO_MODE_CHANGE
 1323: #ifdef __i386__	/* XXX */
 1324: static void
 1325: fill(int val, void *d, size_t size)
 1326: {
 1327:     u_char *p = d;
 1328: 
 1329:     while (size-- > 0)
 1330: 	*p++ = val;
 1331: }
 1332: #endif /* __i386__ */
 1333: 
 1334: static void
 1335: filll_io(int val, vm_offset_t d, size_t size)
 1336: {
 1337:     while (size-- > 0) {
 1338: 	writel(d, val);
 1339: 	d += sizeof(u_int32_t);
 1340:     }
 1341: }
 1342: #endif /* VGA_NO_MODE_CHANGE */
 1343: 
 1344: /* entry points */
 1345: 
 1346: #if 0
 1347: static int
 1348: vga_nop(void)
 1349: {
 1350:     return 0;
 1351: }
 1352: #endif
 1353: 
 1354: static int
 1355: vga_error(void)
 1356: {
 1357:     return ENODEV;
 1358: }
 1359: 
 1360: static int
 1361: vga_probe(int unit, video_adapter_t **adpp, void *arg, int flags)
 1362: {
 1363:     probe_adapters();
 1364:     if (unit >= biosadapters)
 1365: 	return ENXIO;
 1366: 
 1367:     *adpp = &biosadapter[unit];
 1368: 
 1369:     return 0;
 1370: }
 1371: 
 1372: static int
 1373: vga_init(int unit, video_adapter_t *adp, int flags)
 1374: {
 1375:     if ((unit >= biosadapters) || (adp == NULL) || !probe_done(adp))
 1376: 	return ENXIO;
 1377: 
 1378:     if (!init_done(adp)) {
 1379: 	/* nothing to do really... */
 1380: 	adp->va_flags |= V_ADP_INITIALIZED;
 1381:     }
 1382: 
 1383:     if (!config_done(adp)) {
 1384: 	if (vid_register(adp) < 0)
 1385: 		return ENXIO;
 1386: 	adp->va_flags |= V_ADP_REGISTERED;
 1387:     }
 1388:     if (vga_sub_configure != NULL)
 1389: 	(*vga_sub_configure)(0);
 1390: 
 1391:     return 0;
 1392: }
 1393: 
 1394: /*
 1395:  * get_info():
 1396:  * Return the video_info structure of the requested video mode.
 1397:  *
 1398:  * all adapters
 1399:  */
 1400: static int
 1401: vga_get_info(video_adapter_t *adp, int mode, video_info_t *info)
 1402: {
 1403:     int i;
 1404: 
 1405:     if (!vga_init_done)
 1406: 	return ENXIO;
 1407: 
 1408:     mode = map_gen_mode_num(adp->va_type, adp->va_flags & V_ADP_COLOR, mode);
 1409: #ifndef VGA_NO_MODE_CHANGE
 1410:     if (adp->va_flags & V_ADP_MODECHANGE) {
 1411: 	/*
 1412: 	 * If the parameter table entry for this mode is not found, 
 1413: 	 * the mode is not supported...
 1414: 	 */
 1415: 	if (get_mode_param(mode) == NULL)
 1416: 	    return EINVAL;
 1417:     } else
 1418: #endif /* VGA_NO_MODE_CHANGE */
 1419:     {
 1420: 	/* 
 1421: 	 * Even if we don't support video mode switching on this adapter,
 1422: 	 * the information on the initial (thus current) video mode 
 1423: 	 * should be made available.
 1424: 	 */
 1425: 	if (mode != adp->va_initial_mode)
 1426: 	    return EINVAL;
 1427:     }
 1428: 
 1429:     for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
 1430: 	if (bios_vmode[i].vi_mode == NA)
 1431: 	    continue;
 1432: 	if (mode == bios_vmode[i].vi_mode) {
 1433: 	    *info = bios_vmode[i];
 1434: 	    /* XXX */
 1435: 	    info->vi_buffer_size = info->vi_window_size*info->vi_planes;
 1436: 	    return 0;
 1437: 	}
 1438:     }
 1439:     return EINVAL;
 1440: }
 1441: 
 1442: /*
 1443:  * query_mode():
 1444:  * Find a video mode matching the requested parameters.
 1445:  * Fields filled with 0 are considered "don't care" fields and
 1446:  * match any modes.
 1447:  *
 1448:  * all adapters
 1449:  */
 1450: static int
 1451: vga_query_mode(video_adapter_t *adp, video_info_t *info)
 1452: {
 1453:     int i;
 1454: 
 1455:     if (!vga_init_done)
 1456: 	return ENXIO;
 1457: 
 1458:     for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
 1459: 	if (bios_vmode[i].vi_mode == NA)
 1460: 	    continue;
 1461: 
 1462: 	if ((info->vi_width != 0)
 1463: 	    && (info->vi_width != bios_vmode[i].vi_width))
 1464: 		continue;
 1465: 	if ((info->vi_height != 0)
 1466: 	    && (info->vi_height != bios_vmode[i].vi_height))
 1467: 		continue;
 1468: 	if ((info->vi_cwidth != 0)
 1469: 	    && (info->vi_cwidth != bios_vmode[i].vi_cwidth))
 1470: 		continue;
 1471: 	if ((info->vi_cheight != 0)
 1472: 	    && (info->vi_cheight != bios_vmode[i].vi_cheight))
 1473: 		continue;
 1474: 	if ((info->vi_depth != 0)
 1475: 	    && (info->vi_depth != bios_vmode[i].vi_depth))
 1476: 		continue;
 1477: 	if ((info->vi_planes != 0)
 1478: 	    && (info->vi_planes != bios_vmode[i].vi_planes))
 1479: 		continue;
 1480: 	/* XXX: should check pixel format, memory model */
 1481: 	if ((info->vi_flags != 0)
 1482: 	    && (info->vi_flags != bios_vmode[i].vi_flags))
 1483: 		continue;
 1484: 
 1485: 	/* verify if this mode is supported on this adapter */
 1486: 	if (vga_get_info(adp, bios_vmode[i].vi_mode, info))
 1487: 		continue;
 1488: 	return 0;
 1489:     }
 1490:     return ENODEV;
 1491: }
 1492: 
 1493: /*
 1494:  * set_mode():
 1495:  * Change the video mode.
 1496:  *
 1497:  * EGA/VGA
 1498:  */
 1499: 
 1500: #ifndef VGA_NO_MODE_CHANGE
 1501: #ifdef VGA_WIDTH90
 1502: static void
 1503: set_width90(adp_state_t *params)
 1504: {
 1505:     /* 
 1506:      * Based on code submitted by Kelly Yancey (kbyanc@freedomnet.com)
 1507:      * and alexv@sui.gda.itesm.mx.
 1508:      */
 1509:     params->regs[5] |= 1;		/* toggle 8 pixel wide fonts */
 1510:     params->regs[10+0x0] = 0x6b;
 1511:     params->regs[10+0x1] = 0x59;
 1512:     params->regs[10+0x2] = 0x5a;
 1513:     params->regs[10+0x3] = 0x8e;
 1514:     params->regs[10+0x4] = 0x5e;
 1515:     params->regs[10+0x5] = 0x8a;
 1516:     params->regs[10+0x13] = 45;
 1517:     params->regs[35+0x13] = 0;
 1518: }
 1519: #endif /* VGA_WIDTH90 */
 1520: #endif /* !VGA_NO_MODE_CHANGE */
 1521: 
 1522: static int
 1523: vga_set_mode(video_adapter_t *adp, int mode)
 1524: {
 1525: #ifndef VGA_NO_MODE_CHANGE
 1526:     video_info_t info;
 1527:     adp_state_t params;
 1528: 
 1529:     prologue(adp, V_ADP_MODECHANGE, ENODEV);
 1530: 
 1531:     mode = map_gen_mode_num(adp->va_type, 
 1532: 			    adp->va_flags & V_ADP_COLOR, mode);
 1533:     if (vga_get_info(adp, mode, &info))
 1534: 	return EINVAL;
 1535: 
 1536: #if VGA_DEBUG > 1
 1537:     printf("vga_set_mode(): setting mode %d\n", mode);
 1538: #endif
 1539: 
 1540:     params.sig = V_STATE_SIG;
 1541:     bcopy(get_mode_param(mode), params.regs, sizeof(params.regs));
 1542: 
 1543:     switch (mode) {
 1544: #ifdef VGA_WIDTH90
 1545:     case M_VGA_C90x60: case M_VGA_M90x60:
 1546: 	set_width90(&params);
 1547: 	/* FALL THROUGH */
 1548: #endif
 1549:     case M_VGA_C80x60: case M_VGA_M80x60:
 1550: 	params.regs[2]  = 0x08;
 1551: 	params.regs[19] = 0x47;
 1552: 	goto special_480l;
 1553: 
 1554: #ifdef VGA_WIDTH90
 1555:     case M_VGA_C90x30: case M_VGA_M90x30:
 1556: 	set_width90(&params);
 1557: 	/* FALL THROUGH */
 1558: #endif
 1559:     case M_VGA_C80x30: case M_VGA_M80x30:
 1560: 	params.regs[19] = 0x4f;
 1561: special_480l:
 1562: 	params.regs[9] |= 0xc0;
 1563: 	params.regs[16] = 0x08;
 1564: 	params.regs[17] = 0x3e;
 1565: 	params.regs[26] = 0xea;
 1566: 	params.regs[28] = 0xdf;
 1567: 	params.regs[31] = 0xe7;
 1568: 	params.regs[32] = 0x04;
 1569: 	goto setup_mode;
 1570: 
 1571: #ifdef VGA_WIDTH90
 1572:     case M_VGA_C90x43: case M_VGA_M90x43:
 1573: 	set_width90(&params);
 1574: 	/* FALL THROUGH */
 1575: #endif
 1576:     case M_ENH_C80x43: case M_ENH_B80x43:
 1577: 	params.regs[28] = 87;
 1578: 	goto special_80x50;
 1579: 
 1580: #ifdef VGA_WIDTH90
 1581:     case M_VGA_C90x50: case M_VGA_M90x50:
 1582: 	set_width90(&params);
 1583: 	/* FALL THROUGH */
 1584: #endif
 1585:     case M_VGA_C80x50: case M_VGA_M80x50:
 1586: special_80x50:
 1587: 	params.regs[2] = 8;
 1588: 	params.regs[19] = 7;
 1589: 	goto setup_mode;
 1590: 
 1591: #ifdef VGA_WIDTH90
 1592:     case M_VGA_C90x25: case M_VGA_M90x25:
 1593: 	set_width90(&params);
 1594: 	/* FALL THROUGH */
 1595: #endif
 1596:     case M_VGA_C40x25: case M_VGA_C80x25:
 1597:     case M_VGA_M80x25:
 1598:     case M_B40x25:     case M_C40x25:
 1599:     case M_B80x25:     case M_C80x25:
 1600:     case M_ENH_B40x25: case M_ENH_C40x25:
 1601:     case M_ENH_B80x25: case M_ENH_C80x25:
 1602:     case M_EGAMONO80x25:
 1603: 
 1604: setup_mode:
 1605: 	vga_load_state(adp, &params);
 1606: 	break;
 1607: 
 1608:     case M_VGA_MODEX:
 1609: 	/* "unchain" the VGA mode */
 1610: 	params.regs[5-1+0x04] &= 0xf7;
 1611: 	params.regs[5-1+0x04] |= 0x04;
 1612: 	/* turn off doubleword mode */
 1613: 	params.regs[10+0x14] &= 0xbf;
 1614: 	/* turn off word adressing */
 1615: 	params.regs[10+0x17] |= 0x40;
 1616: 	/* set logical screen width */
 1617: 	params.regs[10+0x13] = 80;
 1618: 	/* set 240 lines */
 1619: 	params.regs[10+0x11] = 0x2c;
 1620: 	params.regs[10+0x06] = 0x0d;
 1621: 	params.regs[10+0x07] = 0x3e;
 1622: 	params.regs[10+0x10] = 0xea;
 1623: 	params.regs[10+0x11] = 0xac;
 1624: 	params.regs[10+0x12] = 0xdf;
 1625: 	params.regs[10+0x15] = 0xe7;
 1626: 	params.regs[10+0x16] = 0x06;
 1627: 	/* set vertical sync polarity to reflect aspect ratio */
 1628: 	params.regs[9] = 0xe3;
 1629: 	goto setup_grmode;
 1630: 
 1631:     case M_BG320:     case M_CG320:     case M_BG640:
 1632:     case M_CG320_D:   case M_CG640_E:
 1633:     case M_CG640x350: case M_ENH_CG640:
 1634:     case M_BG640x480: case M_CG640x480: case M_VGA_CG320:
 1635: 
 1636: setup_grmode:
 1637: 	vga_load_state(adp, &params);
 1638: 	break;
 1639: 
 1640:     default:
 1641: 	return EINVAL;
 1642:     }
 1643: 
 1644:     adp->va_mode = mode;
 1645:     info.vi_flags &= ~V_INFO_LINEAR; /* XXX */
 1646:     update_adapter_info(adp, &info);
 1647: 
 1648:     /* move hardware cursor out of the way */
 1649:     (*vidsw[adp->va_index]->set_hw_cursor)(adp, -1, -1);
 1650: 
 1651:     return 0;
 1652: #else /* VGA_NO_MODE_CHANGE */
 1653:     return ENODEV;
 1654: #endif /* VGA_NO_MODE_CHANGE */
 1655: }
 1656: 
 1657: #ifndef VGA_NO_FONT_LOADING
 1658: 
 1659: static void
 1660: set_font_mode(video_adapter_t *adp, u_char *buf)
 1661: {
 1662:     u_char *mp;
 1663:     int s;
 1664: 
 1665:     s = splhigh();
 1666: 
 1667:     /* save register values */
 1668:     if (adp->va_type == KD_VGA) {
 1669: 	outb(TSIDX, 0x02); buf[0] = inb(TSREG);
 1670: 	outb(TSIDX, 0x04); buf[1] = inb(TSREG);
 1671: 	outb(GDCIDX, 0x04); buf[2] = inb(GDCREG);
 1672: 	outb(GDCIDX, 0x05); buf[3] = inb(GDCREG);
 1673: 	outb(GDCIDX, 0x06); buf[4] = inb(GDCREG);
 1674: 	inb(adp->va_crtc_addr + 6);
 1675: 	outb(ATC, 0x10); buf[5] = inb(ATC + 1);
 1676:     } else /* if (adp->va_type == KD_EGA) */ {
 1677: 	/* 
 1678: 	 * EGA cannot be read; copy parameters from the mode parameter 
 1679: 	 * table. 
 1680: 	 */
 1681: 	mp = get_mode_param(adp->va_mode);
 1682: 	buf[0] = mp[5 + 0x02 - 1];
 1683: 	buf[1] = mp[5 + 0x04 - 1];
 1684: 	buf[2] = mp[55 + 0x04];
 1685: 	buf[3] = mp[55 + 0x05];
 1686: 	buf[4] = mp[55 + 0x06];
 1687: 	buf[5] = mp[35 + 0x10];
 1688:     }
 1689: 
 1690:     /* setup vga for loading fonts */
 1691:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1692:     outb(ATC, 0x10); outb(ATC, buf[5] & ~0x01);
 1693:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1694:     outb(ATC, 0x20);				/* enable palette */
 1695: 
 1696: #if VGA_SLOW_IOACCESS
 1697: #ifdef VGA_ALT_SEQACCESS
 1698:     outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1699: #endif
 1700:     outb(TSIDX, 0x02); outb(TSREG, 0x04);
 1701:     outb(TSIDX, 0x04); outb(TSREG, 0x07);
 1702: #ifdef VGA_ALT_SEQACCESS
 1703:     outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1704: #endif
 1705:     outb(GDCIDX, 0x04); outb(GDCREG, 0x02);
 1706:     outb(GDCIDX, 0x05); outb(GDCREG, 0x00);
 1707:     outb(GDCIDX, 0x06); outb(GDCREG, 0x04);
 1708: #else /* VGA_SLOW_IOACCESS */
 1709: #ifdef VGA_ALT_SEQACCESS
 1710:     outw(TSIDX, 0x0100);
 1711: #endif
 1712:     outw(TSIDX, 0x0402);
 1713:     outw(TSIDX, 0x0704);
 1714: #ifdef VGA_ALT_SEQACCESS
 1715:     outw(TSIDX, 0x0300);
 1716: #endif
 1717:     outw(GDCIDX, 0x0204);
 1718:     outw(GDCIDX, 0x0005);
 1719:     outw(GDCIDX, 0x0406);               /* addr = a0000, 64kb */
 1720: #endif /* VGA_SLOW_IOACCESS */
 1721: 
 1722:     splx(s);
 1723: }
 1724: 
 1725: static void
 1726: set_normal_mode(video_adapter_t *adp, u_char *buf)
 1727: {
 1728:     int s;
 1729: 
 1730:     s = splhigh();
 1731: 
 1732:     /* setup vga for normal operation mode again */
 1733:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1734:     outb(ATC, 0x10); outb(ATC, buf[5]);
 1735:     inb(adp->va_crtc_addr + 6);			/* reset flip-flop */
 1736:     outb(ATC, 0x20);				/* enable palette */
 1737: 
 1738: #if VGA_SLOW_IOACCESS
 1739: #ifdef VGA_ALT_SEQACCESS
 1740:     outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1741: #endif
 1742:     outb(TSIDX, 0x02); outb(TSREG, buf[0]);
 1743:     outb(TSIDX, 0x04); outb(TSREG, buf[1]);
 1744: #ifdef VGA_ALT_SEQACCESS
 1745:     outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1746: #endif
 1747:     outb(GDCIDX, 0x04); outb(GDCREG, buf[2]);
 1748:     outb(GDCIDX, 0x05); outb(GDCREG, buf[3]);
 1749:     if (adp->va_crtc_addr == MONO_CRTC) {
 1750: 	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x08);
 1751:     } else {
 1752: 	outb(GDCIDX, 0x06); outb(GDCREG,(buf[4] & 0x03) | 0x0c);
 1753:     }
 1754: #else /* VGA_SLOW_IOACCESS */
 1755: #ifdef VGA_ALT_SEQACCESS
 1756:     outw(TSIDX, 0x0100);
 1757: #endif
 1758:     outw(TSIDX, 0x0002 | (buf[0] << 8));
 1759:     outw(TSIDX, 0x0004 | (buf[1] << 8));
 1760: #ifdef VGA_ALT_SEQACCESS
 1761:     outw(TSIDX, 0x0300);
 1762: #endif
 1763:     outw(GDCIDX, 0x0004 | (buf[2] << 8));
 1764:     outw(GDCIDX, 0x0005 | (buf[3] << 8));
 1765:     if (adp->va_crtc_addr == MONO_CRTC)
 1766:         outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x08)<<8));
 1767:     else
 1768:         outw(GDCIDX, 0x0006 | (((buf[4] & 0x03) | 0x0c)<<8));
 1769: #endif /* VGA_SLOW_IOACCESS */
 1770: 
 1771:     splx(s);
 1772: }
 1773: 
 1774: #endif /* VGA_NO_FONT_LOADING */
 1775: 
 1776: /*
 1777:  * save_font():
 1778:  * Read the font data in the requested font page from the video adapter.
 1779:  *
 1780:  * EGA/VGA
 1781:  */
 1782: static int
 1783: vga_save_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
 1784: 	      int ch, int count)
 1785: {
 1786: #ifndef VGA_NO_FONT_LOADING
 1787:     u_char buf[PARAM_BUFSIZE];
 1788:     u_int32_t segment;
 1789:     int c;
 1790: #ifdef VGA_ALT_SEQACCESS
 1791:     int s;
 1792:     u_char val = 0;
 1793: #endif
 1794: 
 1795:     prologue(adp, V_ADP_FONT, ENODEV);
 1796: 
 1797:     if (fontsize < 14) {
 1798: 	/* FONT_8 */
 1799: 	fontsize = 8;
 1800:     } else if (fontsize >= 32) {
 1801: 	fontsize = 32;
 1802:     } else if (fontsize >= 16) {
 1803: 	/* FONT_16 */
 1804: 	fontsize = 16;
 1805:     } else {
 1806: 	/* FONT_14 */
 1807: 	fontsize = 14;
 1808:     }
 1809: 
 1810:     if (page < 0 || page >= 8)
 1811: 	return EINVAL;
 1812:     segment = FONT_BUF + 0x4000*page;
 1813:     if (page > 3)
 1814: 	segment -= 0xe000;
 1815: 
 1816: #ifdef VGA_ALT_SEQACCESS
 1817:     if (adp->va_type == KD_VGA) {	/* what about EGA? XXX */
 1818: 	s = splhigh();
 1819: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1820: 	outb(TSIDX, 0x01); val = inb(TSREG);	/* disable screen */
 1821: 	outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
 1822: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1823: 	splx(s);
 1824:     }
 1825: #endif
 1826: 
 1827:     set_font_mode(adp, buf);
 1828:     if (fontsize == 32) {
 1829: 	bcopy_fromio(segment + ch*32, data, fontsize*count);
 1830:     } else {
 1831: 	for (c = ch; count > 0; ++c, --count) {
 1832: 	    bcopy_fromio(segment + c*32, data, fontsize);
 1833: 	    data += fontsize;
 1834: 	}
 1835:     }
 1836:     set_normal_mode(adp, buf);
 1837: 
 1838: #ifdef VGA_ALT_SEQACCESS
 1839:     if (adp->va_type == KD_VGA) {
 1840: 	s = splhigh();
 1841: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1842: 	outb(TSIDX, 0x01); outb(TSREG, val & 0xdf);	/* enable screen */
 1843: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1844: 	splx(s);
 1845:     }
 1846: #endif
 1847: 
 1848:     return 0;
 1849: #else /* VGA_NO_FONT_LOADING */
 1850:     return ENODEV;
 1851: #endif /* VGA_NO_FONT_LOADING */
 1852: }
 1853: 
 1854: /*
 1855:  * load_font():
 1856:  * Set the font data in the requested font page.
 1857:  * NOTE: it appears that some recent video adapters do not support
 1858:  * the font page other than 0... XXX
 1859:  *
 1860:  * EGA/VGA
 1861:  */
 1862: static int
 1863: vga_load_font(video_adapter_t *adp, int page, int fontsize, u_char *data,
 1864: 	      int ch, int count)
 1865: {
 1866: #ifndef VGA_NO_FONT_LOADING
 1867:     u_char buf[PARAM_BUFSIZE];
 1868:     u_int32_t segment;
 1869:     int c;
 1870: #ifdef VGA_ALT_SEQACCESS
 1871:     int s;
 1872:     u_char val = 0;
 1873: #endif
 1874: 
 1875:     prologue(adp, V_ADP_FONT, ENODEV);
 1876: 
 1877:     if (fontsize < 14) {
 1878: 	/* FONT_8 */
 1879: 	fontsize = 8;
 1880:     } else if (fontsize >= 32) {
 1881: 	fontsize = 32;
 1882:     } else if (fontsize >= 16) {
 1883: 	/* FONT_16 */
 1884: 	fontsize = 16;
 1885:     } else {
 1886: 	/* FONT_14 */
 1887: 	fontsize = 14;
 1888:     }
 1889: 
 1890:     if (page < 0 || page >= 8)
 1891: 	return EINVAL;
 1892:     segment = FONT_BUF + 0x4000*page;
 1893:     if (page > 3)
 1894: 	segment -= 0xe000;
 1895: 
 1896: #ifdef VGA_ALT_SEQACCESS
 1897:     if (adp->va_type == KD_VGA) {	/* what about EGA? XXX */
 1898: 	s = splhigh();
 1899: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1900: 	outb(TSIDX, 0x01); val = inb(TSREG);	/* disable screen */
 1901: 	outb(TSIDX, 0x01); outb(TSREG, val | 0x20);
 1902: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1903: 	splx(s);
 1904:     }
 1905: #endif
 1906: 
 1907:     set_font_mode(adp, buf);
 1908:     if (fontsize == 32) {
 1909: 	bcopy_toio(data, segment + ch*32, fontsize*count);
 1910:     } else {
 1911: 	for (c = ch; count > 0; ++c, --count) {
 1912: 	    bcopy_toio(data, segment + c*32, fontsize);
 1913: 	    data += fontsize;
 1914: 	}
 1915:     }
 1916:     set_normal_mode(adp, buf);
 1917: 
 1918: #ifdef VGA_ALT_SEQACCESS
 1919:     if (adp->va_type == KD_VGA) {
 1920: 	s = splhigh();
 1921: 	outb(TSIDX, 0x00); outb(TSREG, 0x01);
 1922: 	outb(TSIDX, 0x01); outb(TSREG, val & 0xdf);	/* enable screen */
 1923: 	outb(TSIDX, 0x00); outb(TSREG, 0x03);
 1924: 	splx(s);
 1925:     }
 1926: #endif
 1927: 
 1928:     return 0;
 1929: #else /* VGA_NO_FONT_LOADING */
 1930:     return ENODEV;
 1931: #endif /* VGA_NO_FONT_LOADING */
 1932: }
 1933: 
 1934: /*
 1935:  * show_font():
 1936:  * Activate the requested font page.
 1937:  * NOTE: it appears that some recent video adapters do not support
 1938:  * the font page other than 0... XXX
 1939:  *
 1940:  * EGA/VGA
 1941:  */
 1942: static int
 1943: vga_show_font(video_adapter_t *adp, int page)
 1944: {
 1945: #ifndef VGA_NO_FONT_LOADING
 1946:     static u_char cg[] = { 0x00, 0x05, 0x0a, 0x0f, 0x30, 0x35, 0x3a, 0x3f };
 1947:     int s;
 1948: 
 1949:     prologue(adp, V_ADP_FONT, ENODEV);
 1950:     if (page < 0 || page >= 8)
 1951: 	return EINVAL;
 1952: 
 1953:     s = splhigh();
 1954:     outb(TSIDX, 0x03); outb(TSREG, cg[page]);
 1955:     splx(s);
 1956: 
 1957:     return 0;
 1958: #else /* VGA_NO_FONT_LOADING */
 1959:     return ENODEV;
 1960: #endif /* VGA_NO_FONT_LOADING */
 1961: }
 1962: 
 1963: /*
 1964:  * save_palette():
 1965:  * Read DAC values. The values have expressed in 8 bits.
 1966:  *
 1967:  * VGA
 1968:  */
 1969: static int
 1970: vga_save_palette(video_adapter_t *adp, u_char *palette)
 1971: {
 1972:     int i;
 1973: 
 1974:     prologue(adp, V_ADP_PALETTE, ENODEV);
 1975: 
 1976:     /* 
 1977:      * We store 8 bit values in the palette buffer, while the standard
 1978:      * VGA has 6 bit DAC .
 1979:      */
 1980:     outb(PALRADR, 0x00);
 1981:     for (i = 0; i < 256*3; ++i)
 1982: 	palette[i] = inb(PALDATA) << 2; 
 1983:     inb(adp->va_crtc_addr + 6);	/* reset flip/flop */
 1984:     return 0;
 1985: }
 1986: 
 1987: static int
 1988: vga_save_palette2(video_adapter_t *adp, int base, int count,
 1989: 		  u_char *r, u_char *g, u_char *b)
 1990: {
 1991:     int i;
 1992: 
 1993:     prologue(adp, V_ADP_PALETTE, ENODEV);
 1994: 
 1995:     outb(PALRADR, base);
 1996:     for (i = 0; i < count; ++i) {
 1997: 	r[i] = inb(PALDATA) << 2; 
 1998: 	g[i] = inb(PALDATA) << 2; 
 1999: 	b[i] = inb(PALDATA) << 2; 
 2000:     }
 2001:     inb(adp->va_crtc_addr + 6);		/* reset flip/flop */
 2002:     return 0;
 2003: }
 2004: 
 2005: /*
 2006:  * load_palette():
 2007:  * Set DAC values.
 2008:  *
 2009:  * VGA
 2010:  */
 2011: static int
 2012: vga_load_palette(video_adapter_t *adp, u_char *palette)
 2013: {
 2014:     int i;
 2015: 
 2016:     prologue(adp, V_ADP_PALETTE, ENODEV);
 2017: 
 2018:     outb(PIXMASK, 0xff);		/* no pixelmask */
 2019:     outb(PALWADR, 0x00);
 2020:     for (i = 0; i < 256*3; ++i)
 2021: 	outb(PALDATA, palette[i] >> 2);
 2022:     inb(adp->va_crtc_addr + 6);	/* reset flip/flop */
 2023:     outb(ATC, 0x20);			/* enable palette */
 2024:     return 0;
 2025: }
 2026: 
 2027: static int
 2028: vga_load_palette2(video_adapter_t *adp, int base, int count,
 2029: 		  u_char *r, u_char *g, u_char *b)
 2030: {
 2031:     int i;
 2032: 
 2033:     prologue(adp, V_ADP_PALETTE, ENODEV);
 2034: 
 2035:     outb(PIXMASK, 0xff);		/* no pixelmask */
 2036:     outb(PALWADR, base);
 2037:     for (i = 0; i < count; ++i) {
 2038: 	outb(PALDATA, r[i] >> 2);
 2039: 	outb(PALDATA, g[i] >> 2);
 2040: 	outb(PALDATA, b[i] >> 2);
 2041:     }
 2042:     inb(adp->va_crtc_addr + 6);		/* reset flip/flop */
 2043:     outb(ATC, 0x20);			/* enable palette */
 2044:     return 0;
 2045: }
 2046: 
 2047: /*
 2048:  * set_border():
 2049:  * Change the border color.
 2050:  *
 2051:  * CGA/EGA/VGA
 2052:  */
 2053: static int
 2054: vga_set_border(video_adapter_t *adp, int color)
 2055: {
 2056:     prologue(adp, V_ADP_BORDER, ENODEV);
 2057: 
 2058:     switch (adp->va_type) {
 2059:     case KD_EGA:
 2060:     case KD_VGA:    
 2061: 	inb(adp->va_crtc_addr + 6);	/* reset flip-flop */
 2062: 	outb(ATC, 0x31); outb(ATC, color & 0xff); 
 2063: 	break;  
 2064:     case KD_CGA:    
 2065: 	outb(adp->va_crtc_addr + 5, color & 0x0f); /* color select register */
 2066: 	break;  
 2067:     case KD_MONO:   
 2068:     case KD_HERCULES:
 2069:     default:
 2070: 	break;  
 2071:     }
 2072:     return 0;
 2073: }
 2074: 
 2075: /*
 2076:  * save_state():
 2077:  * Read video register values.
 2078:  * NOTE: this function only reads the standard EGA/VGA registers.
 2079:  * any extra/extended registers of SVGA adapters are not saved.
 2080:  *
 2081:  * VGA
 2082:  */
 2083: static int
 2084: vga_save_state(video_adapter_t *adp, void *p, size_t size)
 2085: {
 2086:     video_info_t info;
 2087:     u_char *buf;
 2088:     int crtc_addr;
 2089:     int i, j;
 2090:     int s;
 2091: 
 2092:     if (size == 0) {
 2093: 	/* return the required buffer size */
 2094: 	prologue(adp, V_ADP_STATESAVE, 0);
 2095: 	return sizeof(adp_state_t);
 2096:     } else {
 2097: 	prologue(adp, V_ADP_STATESAVE, ENODEV);
 2098: 	if (size < sizeof(adp_state_t))
 2099: 	    return EINVAL;
 2100:     }
 2101: 
 2102:     ((adp_state_t *)p)->sig = V_STATE_SIG;
 2103:     buf = ((adp_state_t *)p)->regs;
 2104:     bzero(buf, V_MODE_PARAM_SIZE);
 2105:     crtc_addr = adp->va_crtc_addr;
 2106: 
 2107:     s = splhigh();
 2108: 
 2109:     outb(TSIDX, 0x00); outb(TSREG, 0x01);	/* stop sequencer */
 2110:     for (i = 0, j = 5; i < 4; i++) {           
 2111: 	outb(TSIDX, i + 1);
 2112: 	buf[j++]  =  inb(TSREG);
 2113:     }
 2114:     buf[9]  =  inb(MISC + 10);			/* dot-clock */
 2115:     outb(TSIDX, 0x00); outb(TSREG, 0x03);	/* start sequencer */
 2116: 
 2117:     for (i = 0, j = 10; i < 25; i++) {		/* crtc */
 2118: 	outb(crtc_addr, i);
 2119: 	buf[j++]  =  inb(crtc_addr + 1);
 2120:     }
 2121:     for (i = 0, j = 35; i < 20; i++) {		/* attribute ctrl */
 2122:         inb(crtc_addr + 6);			/* reset flip-flop */
 2123: 	outb(ATC, i);
 2124: 	buf[j++]  =  inb(ATC + 1);
 2125:     }
 2126:     for (i = 0, j = 55; i < 9; i++) {		/* graph data ctrl */
 2127: 	outb(GDCIDX, i);
 2128: 	buf[j++]  =  inb(GDCREG);
 2129:     }
 2130:     inb(crtc_addr + 6);				/* reset flip-flop */
 2131:     outb(ATC, 0x20);				/* enable palette */
 2132: 
 2133:     splx(s);
 2134: 
 2135: #if 1
 2136:     if (vga_get_info(adp, adp->va_mode, &info) == 0) {
 2137: 	if (info.vi_flags & V_INFO_GRAPHICS) {
 2138: 	    buf[0] = info.vi_width/info.vi_cwidth; /* COLS */
 2139: 	    buf[1] = info.vi_height/info.vi_cheight - 1; /* ROWS */
 2140: 	} else {
 2141: 	    buf[0] = info.vi_width;		/* COLS */
 2142: 	    buf[1] = info.vi_height - 1;	/* ROWS */
 2143: 	}
 2144: 	buf[2] = info.vi_cheight;		/* POINTS */
 2145:     } else {
 2146: 	/* XXX: shouldn't be happening... */
 2147: 	printf("vga%d: %s: failed to obtain mode info. (vga_save_state())\n",
 2148: 	       adp->va_unit, adp->va_name);
 2149:     }
 2150: #else
 2151:     buf[0] = readb(BIOS_PADDRTOVADDR(0x44a));	/* COLS */
 2152:     buf[1] = readb(BIOS_PADDRTOVADDR(0x484));	/* ROWS */
 2153:     buf[2] = readb(BIOS_PADDRTOVADDR(0x485));	/* POINTS */
 2154:     buf[3] = readb(BIOS_PADDRTOVADDR(0x44c));
 2155:     buf[4] = readb(BIOS_PADDRTOVADDR(0x44d));
 2156: #endif
 2157: 
 2158:     return 0;
 2159: }
 2160: 
 2161: /*
 2162:  * load_state():
 2163:  * Set video registers at once.
 2164:  * NOTE: this function only updates the standard EGA/VGA registers.
 2165:  * any extra/extended registers of SVGA adapters are not changed.
 2166:  *
 2167:  * EGA/VGA
 2168:  */
 2169: static int
 2170: vga_load_state(video_adapter_t *adp, void *p)
 2171: {
 2172:     u_char *buf;
 2173:     int crtc_addr;
 2174:     int s;
 2175:     int i;
 2176: 
 2177:     prologue(adp, V_ADP_STATELOAD, ENODEV);
 2178:     if (((adp_state_t *)p)->sig != V_STATE_SIG)
 2179: 	return EINVAL;
 2180: 
 2181:     buf = ((adp_state_t *)p)->regs;
 2182:     crtc_addr = adp->va_crtc_addr;
 2183: 
 2184: #if VGA_DEBUG > 1
 2185:     dump_buffer(buf, V_MODE_PARAM_SIZE);
 2186: #endif
 2187: 
 2188:     s = splhigh();
 2189: 
 2190:     outb(TSIDX, 0x00); outb(TSREG, 0x01);	/* stop sequencer */
 2191:     for (i = 0; i < 4; ++i) {			/* program sequencer */
 2192: 	outb(TSIDX, i + 1);
 2193: 	outb(TSREG, buf[i + 5]);
 2194:     }
 2195:     outb(MISC, buf[9]);				/* set dot-clock */
 2196:     outb(TSIDX, 0x00); outb(TSREG, 0x03);	/* start sequencer */
 2197:     outb(crtc_addr, 0x11);
 2198:     outb(crtc_addr + 1, inb(crtc_addr + 1) & 0x7F);
 2199:     for (i = 0; i < 25; ++i) {			/* program crtc */
 2200: 	outb(crtc_addr, i);
 2201: 	outb(crtc_addr + 1, buf[i + 10]);
 2202:     }
 2203:     inb(crtc_addr+6);				/* reset flip-flop */
 2204:     for (i = 0; i < 20; ++i) {			/* program attribute ctrl */
 2205: 	outb(ATC, i);
 2206: 	outb(ATC, buf[i + 35]);
 2207:     }
 2208:     for (i = 0; i < 9; ++i) {			/* program graph data ctrl */
 2209: 	outb(GDCIDX, i);
 2210: 	outb(GDCREG, buf[i + 55]);
 2211:     }
 2212:     inb(crtc_addr + 6);				/* reset flip-flop */
 2213:     outb(ATC, 0x20);				/* enable palette */
 2214: 
 2215: #if notyet /* a temporary workaround for kernel panic, XXX */
 2216: #ifndef VGA_NO_BIOS
 2217:     if (adp->va_unit == V_ADP_PRIMARY) {
 2218: 	writeb(BIOS_PADDRTOVADDR(0x44a), buf[0]);	/* COLS */
 2219: 	writeb(BIOS_PADDRTOVADDR(0x484), buf[1] + rows_offset - 1); /* ROWS */
 2220: 	writeb(BIOS_PADDRTOVADDR(0x485), buf[2]);	/* POINTS */
 2221: #if 0
 2222: 	writeb(BIOS_PADDRTOVADDR(0x44c), buf[3]);
 2223: 	writeb(BIOS_PADDRTOVADDR(0x44d), buf[4]);
 2224: #endif
 2225:     }
 2226: #endif /* VGA_NO_BIOS */
 2227: #endif /* notyet */
 2228: 
 2229:     splx(s);
 2230:     return 0;
 2231: }
 2232: 
 2233: /*
 2234:  * set_origin():
 2235:  * Change the origin (window mapping) of the banked frame buffer.
 2236:  */
 2237: static int
 2238: vga_set_origin(video_adapter_t *adp, off_t offset)
 2239: {
 2240:     /* 
 2241:      * The standard video modes do not require window mapping; 
 2242:      * always return error.
 2243:      */
 2244:     return ENODEV;
 2245: }
 2246: 
 2247: /*
 2248:  * read_hw_cursor():
 2249:  * Read the position of the hardware text cursor.
 2250:  *
 2251:  * all adapters
 2252:  */
 2253: static int
 2254: vga_read_hw_cursor(video_adapter_t *adp, int *col, int *row)
 2255: {
 2256:     u_int16_t off;
 2257:     int s;
 2258: 
 2259:     if (!vga_init_done)
 2260: 	return ENXIO;
 2261: 
 2262:     if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
 2263: 	return ENODEV;
 2264: 
 2265:     s = spltty();
 2266:     outb(adp->va_crtc_addr, 14);
 2267:     off = inb(adp->va_crtc_addr + 1);
 2268:     outb(adp->va_crtc_addr, 15);
 2269:     off = (off << 8) | inb(adp->va_crtc_addr + 1);
 2270:     splx(s);
 2271: 
 2272:     *row = off / adp->va_info.vi_width;
 2273:     *col = off % adp->va_info.vi_width;
 2274: 
 2275:     return 0;
 2276: }
 2277: 
 2278: /*
 2279:  * set_hw_cursor():
 2280:  * Move the hardware text cursor.  If col and row are both -1, 
 2281:  * the cursor won't be shown.
 2282:  *
 2283:  * all adapters
 2284:  */
 2285: static int
 2286: vga_set_hw_cursor(video_adapter_t *adp, int col, int row)
 2287: {
 2288:     u_int16_t off;
 2289:     int s;
 2290: 
 2291:     if (!vga_init_done)
 2292: 	return ENXIO;
 2293: 
 2294:     if ((col == -1) && (row == -1)) {
 2295: 	off = -1;
 2296:     } else {
 2297: 	if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
 2298: 	    return ENODEV;
 2299: 	off = row*adp->va_info.vi_width + col;
 2300:     }
 2301: 
 2302:     s = spltty();
 2303:     outb(adp->va_crtc_addr, 14);
 2304:     outb(adp->va_crtc_addr + 1, off >> 8);
 2305:     outb(adp->va_crtc_addr, 15);
 2306:     outb(adp->va_crtc_addr + 1, off & 0x00ff);
 2307:     splx(s);
 2308: 
 2309:     return 0;
 2310: }
 2311: 
 2312: /*
 2313:  * set_hw_cursor_shape():
 2314:  * Change the shape of the hardware text cursor. If the height is
 2315:  * zero or negative, the cursor won't be shown.
 2316:  *
 2317:  * all adapters
 2318:  */
 2319: static int
 2320: vga_set_hw_cursor_shape(video_adapter_t *adp, int base, int height,
 2321: 			int celsize, int blink)
 2322: {
 2323:     int s;
 2324: 
 2325:     if (!vga_init_done)
 2326: 	return ENXIO;
 2327: 
 2328:     s = spltty();
 2329:     switch (adp->va_type) {
 2330:     case KD_VGA:
 2331:     case KD_CGA:
 2332:     case KD_MONO:
 2333:     case KD_HERCULES:
 2334:     default:
 2335: 	if (height <= 0) {
 2336: 	    /* make the cursor invisible */
 2337: 	    outb(adp->va_crtc_addr, 10);
 2338: 	    outb(adp->va_crtc_addr + 1, 32);
 2339: 	    outb(adp->va_crtc_addr, 11);
 2340: 	    outb(adp->va_crtc_addr + 1, 0);
 2341: 	} else {
 2342: 	    outb(adp->va_crtc_addr, 10);
 2343: 	    outb(adp->va_crtc_addr + 1, celsize - base - height);
 2344: 	    outb(adp->va_crtc_addr, 11);
 2345: 	    outb(adp->va_crtc_addr + 1, celsize - base - 1);
 2346: 	}
 2347: 	break;
 2348:     case KD_EGA:
 2349: 	if (height <= 0) {
 2350: 	    /* make the cursor invisible */
 2351: 	    outb(adp->va_crtc_addr, 10);
 2352: 	    outb(adp->va_crtc_addr + 1, celsize);
 2353: 	    outb(adp->va_crtc_addr, 11);
 2354: 	    outb(adp->va_crtc_addr + 1, 0);
 2355: 	} else {
 2356: 	    outb(adp->va_crtc_addr, 10);
 2357: 	    outb(adp->va_crtc_addr + 1, celsize - base - height);
 2358: 	    outb(adp->va_crtc_addr, 11);
 2359: 	    outb(adp->va_crtc_addr + 1, celsize - base);
 2360: 	}
 2361: 	break;
 2362:     }
 2363:     splx(s);
 2364: 
 2365:     return 0;
 2366: }
 2367: 
 2368: /*
 2369:  * blank_display()
 2370:  * Put the display in power save/power off mode.
 2371:  *
 2372:  * all adapters
 2373:  */
 2374: static int
 2375: vga_blank_display(video_adapter_t *adp, int mode)
 2376: {
 2377:     u_char val;
 2378:     int s;
 2379: 
 2380:     s = splhigh();
 2381:     switch (adp->va_type) {
 2382:     case KD_VGA:
 2383: 	switch (mode) {
 2384: 	case V_DISPLAY_SUSPEND:
 2385: 	case V_DISPLAY_STAND_BY:
 2386: 	    outb(TSIDX, 0x01);
 2387: 	    val = inb(TSREG);
 2388: 	    outb(TSIDX, 0x01);
 2389: 	    outb(TSREG, val | 0x20);
 2390: 	    outb(adp->va_crtc_addr, 0x17);
 2391: 	    val = inb(adp->va_crtc_addr + 1);
 2392: 	    outb(adp->va_crtc_addr + 1, val & ~0x80);
 2393: 	    break;
 2394: 	case V_DISPLAY_BLANK:
 2395: 	    outb(TSIDX, 0x01);
 2396: 	    val = inb(TSREG);
 2397: 	    outb(TSIDX, 0x01);
 2398: 	    outb(TSREG, val | 0x20);
 2399: 	    break;
 2400: 	case V_DISPLAY_ON:
 2401: 	    outb(TSIDX, 0x01);
 2402: 	    val = inb(TSREG);
 2403: 	    outb(TSIDX, 0x01);
 2404: 	    outb(TSREG, val & 0xDF);
 2405: 	    outb(adp->va_crtc_addr, 0x17);
 2406: 	    val = inb(adp->va_crtc_addr + 1);
 2407: 	    outb(adp->va_crtc_addr + 1, val | 0x80);
 2408: 	    break;
 2409: 	}
 2410: 	break;
 2411: 
 2412:     case KD_EGA:
 2413: 	/* no support yet */
 2414: 	splx(s);
 2415: 	return ENODEV;
 2416: 
 2417:     case KD_CGA:
 2418: 	switch (mode) {
 2419: 	case V_DISPLAY_SUSPEND:
 2420: 	case V_DISPLAY_STAND_BY:
 2421: 	case V_DISPLAY_BLANK:
 2422: 	    outb(adp->va_crtc_addr + 4, 0x25);
 2423: 	    break;
 2424: 	case V_DISPLAY_ON:
 2425: 	    outb(adp->va_crtc_addr + 4, 0x2d);
 2426: 	    break;
 2427: 	}
 2428: 	break;
 2429: 
 2430:     case KD_MONO:
 2431:     case KD_HERCULES:
 2432: 	switch (mode) {
 2433: 	case V_DISPLAY_SUSPEND:
 2434: 	case V_DISPLAY_STAND_BY:
 2435: 	case V_DISPLAY_BLANK:
 2436: 	    outb(adp->va_crtc_addr + 4, 0x21);
 2437: 	    break;
 2438: 	case V_DISPLAY_ON:
 2439: 	    outb(adp->va_crtc_addr + 4, 0x29);
 2440: 	    break;
 2441: 	}
 2442: 	break;
 2443:     default:
 2444: 	break;
 2445:     }
 2446:     splx(s);
 2447: 
 2448:     return 0;
 2449: }
 2450: 
 2451: /*
 2452:  * mmap():
 2453:  * Mmap frame buffer.
 2454:  *
 2455:  * all adapters
 2456:  */
 2457: static int
 2458: vga_mmap_buf(video_adapter_t *adp, vm_offset_t offset, int prot)
 2459: {
 2460:     if (adp->va_info.vi_flags & V_INFO_LINEAR)
 2461: 	return -1;
 2462: 
 2463: #if VGA_DEBUG > 0
 2464:     printf("vga_mmap_buf(): window:0x%x, offset:0x%x\n", 
 2465: 	   adp->va_info.vi_window, offset);
 2466: #endif
 2467: 
 2468:     /* XXX: is this correct? */
 2469:     if (offset > adp->va_window_size - PAGE_SIZE)
 2470: 	return -1;
 2471: 
 2472: #ifdef __i386__
 2473:     return i386_btop(adp->va_info.vi_window + offset);
 2474: #endif
 2475: #ifdef __alpha__
 2476:     return alpha_btop(adp->va_info.vi_window + offset);
 2477: #endif
 2478: }
 2479: 
 2480: #ifndef VGA_NO_MODE_CHANGE
 2481: 
 2482: static void
 2483: planar_fill(video_adapter_t *adp, int val)
 2484: {
 2485:     int length;
 2486:     int at;			/* position in the frame buffer */
 2487:     int l;
 2488: 
 2489:     outw(GDCIDX, 0x0005);		/* read mode 0, write mode 0 */
 2490:     outw(GDCIDX, 0x0003);		/* data rotate/function select */
 2491:     outw(GDCIDX, 0x0f01);		/* set/reset enable */
 2492:     outw(GDCIDX, 0xff08);		/* bit mask */
 2493:     outw(GDCIDX, (val << 8) | 0x00);	/* set/reset */
 2494:     at = 0;
 2495:     length = adp->va_line_width*adp->va_info.vi_height;
 2496:     while (length > 0) {
 2497: 	l = imin(length, adp->va_window_size);
 2498: 	(*vidsw[adp->va_index]->set_win_org)(adp, at);
 2499: 	bzero_io(adp->va_window, l);
 2500: 	length -= l;
 2501: 	at += l;
 2502:     }
 2503:     outw(GDCIDX, 0x0000);		/* set/reset */
 2504:     outw(GDCIDX, 0x0001);		/* set/reset enable */
 2505: }
 2506: 
 2507: static void
 2508: packed_fill(video_adapter_t *adp, int val)
 2509: {
 2510:     int length;
 2511:     int at;			/* position in the frame buffer */
 2512:     int l;
 2513: 
 2514:     at = 0;
 2515:     length = adp->va_line_width*adp->va_info.vi_height;
 2516:     while (length > 0) {
 2517: 	l = imin(length, adp->va_window_size);
 2518: 	(*vidsw[adp->va_index]->set_win_org)(adp, at);
 2519: 	fill_io(val, adp->va_window, l);
 2520: 	length -= l;
 2521: 	at += l;
 2522:     }
 2523: }
 2524: 
 2525: static void
 2526: direct_fill(video_adapter_t *adp, int val)
 2527: {
 2528:     int length;
 2529:     int at;			/* position in the frame buffer */
 2530:     int l;
 2531: 
 2532:     at = 0;
 2533:     length = adp->va_line_width*adp->va_info.vi_height;
 2534:     while (length > 0) {
 2535: 	l = imin(length, adp->va_window_size);
 2536: 	(*vidsw[adp->va_index]->set_win_org)(adp, at);
 2537: 	switch (adp->va_info.vi_pixel_size) {
 2538: 	case sizeof(u_int16_t):
 2539: 	    fillw_io(val, adp->va_window, l/sizeof(u_int16_t));
 2540: 	    break;
 2541: 	case 3:
 2542: 	    /* FIXME */
 2543: 	    break;
 2544: 	case sizeof(u_int32_t):
 2545: 	    filll_io(val, adp->va_window, l/sizeof(u_int32_t));
 2546: 	    break;
 2547: 	}
 2548: 	length -= l;
 2549: 	at += l;
 2550:     }
 2551: }
 2552: 
 2553: static int
 2554: vga_clear(video_adapter_t *adp)
 2555: {
 2556:     switch (adp->va_info.vi_mem_model) {
 2557:     case V_INFO_MM_TEXT:
 2558: 	/* do nothing? XXX */
 2559: 	break;
 2560:     case V_INFO_MM_PLANAR:
 2561: 	planar_fill(adp, 0);
 2562: 	break;
 2563:     case V_INFO_MM_PACKED:
 2564: 	packed_fill(adp, 0);
 2565: 	break;
 2566:     case V_INFO_MM_DIRECT:
 2567: 	direct_fill(adp, 0);
 2568: 	break;
 2569:     }
 2570:     return 0;
 2571: }
 2572: 
 2573: #ifdef notyet
 2574: static void
 2575: planar_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2576: {
 2577:     int banksize;
 2578:     int bank;
 2579:     int pos;
 2580:     int offset;			/* offset within window */
 2581:     int bx;
 2582:     int l;
 2583: 
 2584:     outw(GDCIDX, 0x0005);		/* read mode 0, write mode 0 */
 2585:     outw(GDCIDX, 0x0003);		/* data rotate/function select */
 2586:     outw(GDCIDX, 0x0f01);		/* set/reset enable */
 2587:     outw(GDCIDX, 0xff08);		/* bit mask */
 2588:     outw(GDCIDX, (val << 8) | 0x00); /* set/reset */
 2589: 
 2590:     banksize = adp->va_window_size;
 2591:     bank = -1;
 2592:     while (cy > 0) {
 2593: 	pos = adp->va_line_width*y + x/8;
 2594: 	if (bank != pos/banksize) {
 2595: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2596: 	    bank = pos/banksize;
 2597: 	}
 2598: 	offset = pos%banksize;
 2599: 	bx = (x + cx)/8 - x/8;
 2600: 	if (x % 8) {
 2601: 	    outw(GDCIDX, ((0xff00 >> (x % 8)) & 0xff00) | 0x08);
 2602: 	    writeb(adp->va_window + offset, 0);
 2603: 	    ++offset;
 2604: 	    --bx;
 2605: 	    if (offset >= banksize) {
 2606: 		offset = 0;
 2607: 		++bank;		/* next bank */
 2608: 		(*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2609: 	    }
 2610: 	    outw(GDCIDX, 0xff08);	/* bit mask */
 2611: 	}
 2612: 	while (bx > 0) {
 2613: 	    l = imin(bx, banksize);
 2614: 	    bzero_io(adp->va_window + offset, l);
 2615: 	    offset += l;
 2616: 	    bx -= l;
 2617: 	    if (offset >= banksize) {
 2618: 		offset = 0;
 2619: 		++bank;		/* next bank */
 2620: 		(*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2621: 	    }
 2622: 	}
 2623: 	if ((x + cx) % 8) {
 2624: 	    outw(GDCIDX, (~(0xff00 >> ((x + cx) % 8)) & 0xff00) | 0x08);
 2625: 	    writeb(adp->va_window + offset, 0);
 2626: 	    ++offset;
 2627: 	    if (offset >= banksize) {
 2628: 		offset = 0;
 2629: 		++bank;		/* next bank */
 2630: 		(*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2631: 	    }
 2632: 	    outw(GDCIDX, 0xff08);	/* bit mask */
 2633: 	}
 2634: 	++y;
 2635: 	--cy;
 2636:     }
 2637: 
 2638:     outw(GDCIDX, 0xff08);		/* bit mask */
 2639:     outw(GDCIDX, 0x0000);		/* set/reset */
 2640:     outw(GDCIDX, 0x0001);		/* set/reset enable */
 2641: }
 2642: 
 2643: static void
 2644: packed_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2645: {
 2646:     int banksize;
 2647:     int bank;
 2648:     int pos;
 2649:     int offset;			/* offset within window */
 2650:     int end;
 2651: 
 2652:     banksize = adp->va_window_size;
 2653:     bank = -1;
 2654:     cx *= adp->va_info.vi_pixel_size;
 2655:     while (cy > 0) {
 2656: 	pos = adp->va_line_width*y + x*adp->va_info.vi_pixel_size;
 2657: 	if (bank != pos/banksize) {
 2658: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2659: 	    bank = pos/banksize;
 2660: 	}
 2661: 	offset = pos%banksize;
 2662: 	end = imin(offset + cx, banksize);
 2663: 	fill_io(val, adp->va_window + offset,
 2664: 		(end - offset)/adp->va_info.vi_pixel_size);
 2665: 	/* the line may cross the window boundary */
 2666: 	if (offset + cx > banksize) {
 2667: 	    ++bank;		/* next bank */
 2668: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2669: 	    end = offset + cx - banksize;
 2670: 	    fill_io(val, adp->va_window, end/adp->va_info.vi_pixel_size);
 2671: 	}
 2672: 	++y;
 2673: 	--cy;
 2674:     }
 2675: }
 2676: 
 2677: static void
 2678: direct_fill_rect16(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2679: {
 2680:     int banksize;
 2681:     int bank;
 2682:     int pos;
 2683:     int offset;			/* offset within window */
 2684:     int end;
 2685: 
 2686:     /*
 2687:      * XXX: the function assumes that banksize is a muliple of
 2688:      * sizeof(u_int16_t).
 2689:      */
 2690:     banksize = adp->va_window_size;
 2691:     bank = -1;
 2692:     cx *= sizeof(u_int16_t);
 2693:     while (cy > 0) {
 2694: 	pos = adp->va_line_width*y + x*sizeof(u_int16_t);
 2695: 	if (bank != pos/banksize) {
 2696: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2697: 	    bank = pos/banksize;
 2698: 	}
 2699: 	offset = pos%banksize;
 2700: 	end = imin(offset + cx, banksize);
 2701: 	fillw_io(val, adp->va_window + offset,
 2702: 		 (end - offset)/sizeof(u_int16_t));
 2703: 	/* the line may cross the window boundary */
 2704: 	if (offset + cx > banksize) {
 2705: 	    ++bank;		/* next bank */
 2706: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2707: 	    end = offset + cx - banksize;
 2708: 	    fillw_io(val, adp->va_window, end/sizeof(u_int16_t));
 2709: 	}
 2710: 	++y;
 2711: 	--cy;
 2712:     }
 2713: }
 2714: 
 2715: static void
 2716: direct_fill_rect24(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2717: {
 2718:     int banksize;
 2719:     int bank;
 2720:     int pos;
 2721:     int offset;			/* offset within window */
 2722:     int end;
 2723:     int i;
 2724:     int j;
 2725:     u_int8_t b[3];
 2726: 
 2727:     b[0] = val & 0x0000ff;
 2728:     b[1] = (val >> 8) & 0x0000ff;
 2729:     b[2] = (val >> 16) & 0x0000ff;
 2730:     banksize = adp->va_window_size;
 2731:     bank = -1;
 2732:     cx *= 3;
 2733:     while (cy > 0) {
 2734: 	pos = adp->va_line_width*y + x*3;
 2735: 	if (bank != pos/banksize) {
 2736: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2737: 	    bank = pos/banksize;
 2738: 	}
 2739: 	offset = pos%banksize;
 2740: 	end = imin(offset + cx, banksize);
 2741: 	for (i = 0, j = offset; j < end; i = (++i)%3, ++j) {
 2742: 	    writeb(adp->va_window + j, b[i]);
 2743: 	}
 2744: 	/* the line may cross the window boundary */
 2745: 	if (offset + cx >= banksize) {
 2746: 	    ++bank;		/* next bank */
 2747: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2748: 	    j = 0;
 2749: 	    end = offset + cx - banksize;
 2750: 	    for (; j < end; i = (++i)%3, ++j) {
 2751: 		writeb(adp->va_window + j, b[i]);
 2752: 	    }
 2753: 	}
 2754: 	++y;
 2755: 	--cy;
 2756:     }
 2757: }
 2758: 
 2759: static void
 2760: direct_fill_rect32(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2761: {
 2762:     int banksize;
 2763:     int bank;
 2764:     int pos;
 2765:     int offset;			/* offset within window */
 2766:     int end;
 2767: 
 2768:     /*
 2769:      * XXX: the function assumes that banksize is a muliple of
 2770:      * sizeof(u_int32_t).
 2771:      */
 2772:     banksize = adp->va_window_size;
 2773:     bank = -1;
 2774:     cx *= sizeof(u_int32_t);
 2775:     while (cy > 0) {
 2776: 	pos = adp->va_line_width*y + x*sizeof(u_int32_t);
 2777: 	if (bank != pos/banksize) {
 2778: 	    (*vidsw[adp->va_index]->set_win_org)(adp, pos);
 2779: 	    bank = pos/banksize;
 2780: 	}
 2781: 	offset = pos%banksize;
 2782: 	end = imin(offset + cx, banksize);
 2783: 	filll_io(val, adp->va_window + offset,
 2784: 		 (end - offset)/sizeof(u_int32_t));
 2785: 	/* the line may cross the window boundary */
 2786: 	if (offset + cx > banksize) {
 2787: 	    ++bank;		/* next bank */
 2788: 	    (*vidsw[adp->va_index]->set_win_org)(adp, bank*banksize);
 2789: 	    end = offset + cx - banksize;
 2790: 	    filll_io(val, adp->va_window, end/sizeof(u_int32_t));
 2791: 	}
 2792: 	++y;
 2793: 	--cy;
 2794:     }
 2795: }
 2796: 
 2797: static int
 2798: vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2799: {
 2800:     switch (adp->va_info.vi_mem_model) {
 2801:     case V_INFO_MM_TEXT:
 2802: 	/* do nothing? XXX */
 2803: 	break;
 2804:     case V_INFO_MM_PLANAR:
 2805: 	planar_fill_rect(adp, val, x, y, cx, cy);
 2806: 	break;
 2807:     case V_INFO_MM_PACKED:
 2808: 	packed_fill_rect(adp, val, x, y, cx, cy);
 2809: 	break;
 2810:     case V_INFO_MM_DIRECT:
 2811: 	switch (adp->va_info.vi_pixel_size) {
 2812: 	case sizeof(u_int16_t):
 2813: 	    direct_fill_rect16(adp, val, x, y, cx, cy);
 2814: 	    break;
 2815: 	case 3:
 2816: 	    direct_fill_rect24(adp, val, x, y, cx, cy);
 2817: 	    break;
 2818: 	case sizeof(u_int32_t):
 2819: 	    direct_fill_rect32(adp, val, x, y, cx, cy);
 2820: 	    break;
 2821: 	}
 2822: 	break;
 2823:     }
 2824:     return 0;
 2825: }
 2826: #else /* !notyet */
 2827: static int
 2828: vga_fill_rect(video_adapter_t *adp, int val, int x, int y, int cx, int cy)
 2829: {
 2830:     return ENODEV;
 2831: }
 2832: #endif /* notyet */
 2833: 
 2834: static int
 2835: vga_bitblt(video_adapter_t *adp,...)
 2836: {
 2837:     /* FIXME */
 2838:     return ENODEV;
 2839: }
 2840: 
 2841: #endif /* !VGA_NO_MODE_CHANGE */
 2842: 
 2843: static int
 2844: get_palette(video_adapter_t *adp, int base, int count,
 2845: 	    u_char *red, u_char *green, u_char *blue, u_char *trans)
 2846: {
 2847:     u_char *r;
 2848:     u_char *g;
 2849:     u_char *b;
 2850: 
 2851:     if ((base < 0) || (base >= 256) || (base + count > 256))
 2852: 	return EINVAL;
 2853: 
 2854:     r = malloc(count*3, M_DEVBUF, M_WAITOK);
 2855:     g = r + count;
 2856:     b = g + count;
 2857:     if (vga_save_palette2(adp, base, count, r, g, b))
 2858: 	return ENODEV;
 2859:     copyout(r, red, count);
 2860:     copyout(g, green, count);
 2861:     copyout(b, blue, count);
 2862:     if (trans != NULL) {
 2863: 	bzero(r, count);
 2864: 	copyout(r, trans, count);
 2865:     }
 2866:     free(r, M_DEVBUF);
 2867: 
 2868:     return 0;
 2869: }
 2870: 
 2871: static int
 2872: set_palette(video_adapter_t *adp, int base, int count,
 2873: 	    u_char *red, u_char *green, u_char *blue, u_char *trans)
 2874: {
 2875:     u_char *r;
 2876:     u_char *g;
 2877:     u_char *b;
 2878:     int err;
 2879: 
 2880:     if ((base < 0) || (base >= 256) || (base + count > 256))
 2881: 	return EINVAL;
 2882: 
 2883:     r = malloc(count*3, M_DEVBUF, M_WAITOK);
 2884:     g = r + count;
 2885:     b = g + count;
 2886:     copyin(red, r, count);
 2887:     copyin(green, g, count);
 2888:     copyin(blue, b, count);
 2889:     err = vga_load_palette2(adp, base, count, r, g, b);
 2890:     free(r, M_DEVBUF);
 2891: 
 2892:     return (err ? ENODEV : 0);
 2893: }
 2894: 
 2895: static int
 2896: vga_dev_ioctl(video_adapter_t *adp, u_long cmd, caddr_t arg)
 2897: {
 2898:     switch (cmd) {
 2899:     case FBIO_GETWINORG:	/* get frame buffer window origin */
 2900: 	*(u_int *)arg = 0;
 2901: 	return 0;
 2902: 
 2903:     case FBIO_SETWINORG:	/* set frame buffer window origin */
 2904: 	return ENODEV;
 2905: 
 2906:     case FBIO_SETDISPSTART:	/* set display start address */
 2907: 	return (set_display_start(adp, 
 2908: 				  ((video_display_start_t *)arg)->x,
 2909: 			  	  ((video_display_start_t *)arg)->y)
 2910: 		? ENODEV : 0);
 2911: 
 2912:     case FBIO_SETLINEWIDTH:	/* set scan line length in pixel */
 2913: 	return (set_line_length(adp, *(u_int *)arg) ? ENODEV : 0);
 2914: 
 2915:     case FBIO_GETPALETTE:	/* get color palette */
 2916: 	return get_palette(adp, ((video_color_palette_t *)arg)->index,
 2917: 			   ((video_color_palette_t *)arg)->count,
 2918: 			   ((video_color_palette_t *)arg)->red,
 2919: 			   ((video_color_palette_t *)arg)->green,
 2920: 			   ((video_color_palette_t *)arg)->blue,
 2921: 			   ((video_color_palette_t *)arg)->transparent);
 2922: 
 2923:     case FBIO_SETPALETTE:	/* set color palette */
 2924: 	return set_palette(adp, ((video_color_palette_t *)arg)->index,
 2925: 			   ((video_color_palette_t *)arg)->count,
 2926: 			   ((video_color_palette_t *)arg)->red,
 2927: 			   ((video_color_palette_t *)arg)->green,
 2928: 			   ((video_color_palette_t *)arg)->blue,
 2929: 			   ((video_color_palette_t *)arg)->transparent);
 2930: 
 2931:     case FBIOGTYPE:		/* get frame buffer type info. */
 2932: 	((struct fbtype *)arg)->fb_type = fb_type(adp->va_type);
 2933: 	((struct fbtype *)arg)->fb_height = adp->va_info.vi_height;
 2934: 	((struct fbtype *)arg)->fb_width = adp->va_info.vi_width;
 2935: 	((struct fbtype *)arg)->fb_depth = adp->va_info.vi_depth;
 2936: 	if ((adp->va_info.vi_depth <= 1) || (adp->va_info.vi_depth > 8))
 2937: 	    ((struct fbtype *)arg)->fb_cmsize = 0;
 2938: 	else
 2939: 	    ((struct fbtype *)arg)->fb_cmsize = 1 << adp->va_info.vi_depth;
 2940: 	((struct fbtype *)arg)->fb_size = adp->va_buffer_size;
 2941: 	return 0;
 2942: 
 2943:     case FBIOGETCMAP:		/* get color palette */
 2944: 	return get_palette(adp, ((struct fbcmap *)arg)->index,
 2945: 			   ((struct fbcmap *)arg)->count,
 2946: 			   ((struct fbcmap *)arg)->red,
 2947: 			   ((struct fbcmap *)arg)->green,
 2948: 			   ((struct fbcmap *)arg)->blue, NULL);
 2949: 
 2950:     case FBIOPUTCMAP:		/* set color palette */
 2951: 	return set_palette(adp, ((struct fbcmap *)arg)->index,
 2952: 			   ((struct fbcmap *)arg)->count,
 2953: 			   ((struct fbcmap *)arg)->red,
 2954: 			   ((struct fbcmap *)arg)->green,
 2955: 			   ((struct fbcmap *)arg)->blue, NULL);
 2956: 
 2957:     default:
 2958: 	return fb_commonioctl(adp, cmd, arg);
 2959:     }
 2960: }
 2961: 
 2962: static void
 2963: dump_buffer(u_char *buf, size_t len)
 2964: {
 2965:     int i;
 2966: 
 2967:     for(i = 0; i < len;) {
 2968: 	printf("%02x ", buf[i]);
 2969: 	if ((++i % 16) == 0)
 2970: 	    printf("\n");
 2971:     }
 2972: }
 2973: 
 2974: /*
 2975:  * diag():
 2976:  * Print some information about the video adapter and video modes,
 2977:  * with requested level of details.
 2978:  *
 2979:  * all adapters
 2980:  */
 2981: static int
 2982: vga_diag(video_adapter_t *adp, int level)
 2983: {
 2984:     u_char *mp;
 2985: #if FB_DEBUG > 1
 2986:     video_info_t info;
 2987:     int i;
 2988: #endif
 2989: 
 2990:     if (!vga_init_done)
 2991: 	return ENXIO;
 2992: 
 2993: #if FB_DEBUG > 1
 2994: #ifndef VGA_NO_BIOS
 2995:     printf("vga: RTC equip. code:0x%02x, DCC code:0x%02x\n",
 2996: 	   rtcin(RTC_EQUIPMENT), readb(BIOS_PADDRTOVADDR(0x488)));
 2997:     printf("vga: CRTC:0x%x, video option:0x%02x, ",
 2998: 	   readw(BIOS_PADDRTOVADDR(0x463)),
 2999: 	   readb(BIOS_PADDRTOVADDR(0x487)));
 3000:     printf("rows:%d, cols:%d, font height:%d\n",
 3001: 	   readb(BIOS_PADDRTOVADDR(0x44a)),
 3002: 	   readb(BIOS_PADDRTOVADDR(0x484)) + 1,
 3003: 	   readb(BIOS_PADDRTOVADDR(0x485)));
 3004: #endif /* VGA_NO_BIOS */
 3005: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
 3006:     printf("vga: param table EGA/VGA:%p", video_mode_ptr);
 3007:     printf(", CGA/MDA:%p\n", video_mode_ptr2);
 3008:     printf("vga: rows_offset:%d\n", rows_offset);
 3009: #endif
 3010: #endif /* FB_DEBUG > 1 */
 3011: 
 3012:     fb_dump_adp_info(VGA_DRIVER_NAME, adp, level);
 3013: 
 3014: #if FB_DEBUG > 1
 3015:     if (adp->va_flags & V_ADP_MODECHANGE) {
 3016: 	for (i = 0; bios_vmode[i].vi_mode != EOT; ++i) {
 3017: 	    if (bios_vmode[i].vi_mode == NA)
 3018: 		continue;
 3019: 	    if (get_mode_param(bios_vmode[i].vi_mode) == NULL)
 3020: 		continue;
 3021: 	    fb_dump_mode_info(VGA_DRIVER_NAME, adp, &bios_vmode[i], level);
 3022: 	}
 3023:     } else {
 3024: 	vga_get_info(adp, adp->va_initial_mode, &info);	/* shouldn't fail */
 3025: 	fb_dump_mode_info(VGA_DRIVER_NAME, adp, &info, level);
 3026:     }
 3027: #endif /* FB_DEBUG > 1 */
 3028: 
 3029:     if ((adp->va_type != KD_EGA) && (adp->va_type != KD_VGA))
 3030: 	return 0;
 3031: #if !defined(VGA_NO_BIOS) && !defined(VGA_NO_MODE_CHANGE)
 3032:     if (video_mode_ptr == NULL)
 3033: 	printf("vga%d: %s: WARNING: video mode switching is not "
 3034: 	       "fully supported on this adapter\n",
 3035: 	       adp->va_unit, adp->va_name);
 3036: #endif
 3037:     if (level <= 0)
 3038: 	return 0;
 3039: 
 3040:     if (adp->va_type == KD_VGA) {
 3041: 	printf("VGA parameters upon power-up\n");
 3042: 	dump_buffer(adpstate.regs, sizeof(adpstate.regs));
 3043: 	printf("VGA parameters in BIOS for mode %d\n", adp->va_initial_mode);
 3044: 	dump_buffer(adpstate2.regs, sizeof(adpstate2.regs));
 3045:     }
 3046: 
 3047:     mp = get_mode_param(adp->va_initial_mode);
 3048:     if (mp == NULL)	/* this shouldn't be happening */
 3049: 	return 0;
 3050:     printf("EGA/VGA parameters to be used for mode %d\n", adp->va_initial_mode);
 3051:     dump_buffer(mp, V_MODE_PARAM_SIZE);
 3052: 
 3053:     return 0;
 3054: }