Initial source

1 files changed, 201 insertions, 0 deletions

diff --git a/i386/i386at/kdsoft.h b/i386/i386at/kdsoft.h
new file mode 100644
index 0000000..2be21d0
--- /dev/null
+++ b/i386/i386at/kdsoft.h
@@ -0,0 +1,201 @@
+/* 
+ * Mach Operating System
+ * Copyright (c) 1991,1990,1989 Carnegie Mellon University
+ * All Rights Reserved.
+ * 
+ * Permission to use, copy, modify and distribute this software and its
+ * documentation is hereby granted, provided that both the copyright
+ * notice and this permission notice appear in all copies of the
+ * software, derivative works or modified versions, and any portions
+ * thereof, and that both notices appear in supporting documentation.
+ * 
+ * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
+ * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
+ * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
+ * 
+ * Carnegie Mellon requests users of this software to return to
+ * 
+ *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
+ *  School of Computer Science
+ *  Carnegie Mellon University
+ *  Pittsburgh PA 15213-3890
+ * 
+ * any improvements or extensions that they make and grant Carnegie Mellon
+ * the rights to redistribute these changes.
+ */
+/* **********************************************************************
+ File:         kdsoft.h
+ Description:  Software structures for keyboard/display driver, shared with
+	drivers for specific graphics cards.
+
+ $ Header: $
+
+ Copyright Ing. C. Olivetti & C. S.p.A. 1988, 1989.
+ All rights reserved.
+********************************************************************** */
+
+/*
+  Copyright 1988, 1989 by Olivetti Advanced Technology Center, Inc.,
+Cupertino, California.
+
+		All Rights Reserved
+
+  Permission to use, copy, modify, and distribute this software and
+its documentation for any purpose and without fee is hereby
+granted, provided that the above copyright notice appears in all
+copies and that both the copyright notice and this permission notice
+appear in supporting documentation, and that the name of Olivetti
+not be used in advertising or publicity pertaining to distribution
+of the software without specific, written prior permission.
+
+  OLIVETTI DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
+INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
+IN NO EVENT SHALL OLIVETTI BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
+CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
+NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUR OF OR IN CONNECTION
+WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/*
+ * This driver handles two types of graphics cards.  The first type
+ * (e.g., EGA, CGA), treats the screen as a page of characters and
+ * has a hardware cursor.  The second type (e.g., the Blit) treats the
+ * screen as a bitmap.  A hardware cursor may be present, but it is
+ * ignored in favor of a software cursor.
+ *
+ *
+ * Most of the driver uses the following abstraction for the display:
+ *
+ * The cursor position is simply an index into a (logical) linear char
+ * array that wraps around at the end of each line.  Each character
+ * takes up ONE_SPACE bytes.  Values in [0..ONE_PAGE) are positions in
+ * the displayed page.  Values < 0 and >= ONE_PAGE are off the page
+ * and require some scrolling to put the cursor back on the page.
+ *
+ * The kd_dxxx routines handle the conversion from this abstraction to
+ * what the hardware requires.
+ *
+ * (*kd_dput)(pos, ch, chattr)
+ *	csrpos_t pos;
+ *	char ch, chattr;
+ *  Displays a character at "pos", where "ch" = the character to
+ *  be displayed and "chattr" is its attribute byte.
+ *
+ * (*kd_dmvup)(from, to, count)
+ *	csrpos_t from, to;
+ *	int count;
+ *  Does a (relatively) fast block transfer of characters upward.
+ *  "count" is the number of character positions (not bytes) to move.
+ *  "from" is the character position to start moving from (at the start
+ *  of the block to be moved).  "to" is the character position to start
+ *  moving to.
+ *
+ * (*kd_dmvdown)(from, to, count)
+ *	csrpos_t from, to;
+ *	int count;
+ *  "count" is the number of character positions (not bytes) to move.
+ *  "from" is the character position to start moving from (at the end
+ *  of the block to be moved).  "to" is the character position to
+ *  start moving to.
+ *
+ * (*kd_dclear)(to, count, chattr)
+ *	csrpos_t, to;
+ *	int count;
+ *	char chattr;
+ *  Erases "count" character positions, starting with "to".
+ *
+ * (*kd_dsetcursor)(pos)
+ *  Sets kd_curpos and moves the displayed cursor to track it.  "pos"
+ *  should be in the range [0..ONE_PAGE).
+ *  
+ * (*kd_dreset)()
+ *  In some cases, the boot program expects the display to be in a
+ *  particular state, and doing a soft reset (i.e.,
+ *  software-controlled reboot) doesn't put it into that state.  For
+ *  these cases, the machine-specific driver should provide a "reset"
+ *  procedure, which will be called just before the kd code causes the
+ *  system to reboot.
+ */
+
+extern void bmpput(), bmpmvup(), bmpmvdown(), bmpclear(), bmpsetcursor();
+
+extern void	(*kd_dput)();		/* put attributed char */
+extern void	(*kd_dmvup)();		/* block move up */
+extern void	(*kd_dmvdown)();	/* block move down */
+extern void	(*kd_dclear)();		/* block clear */
+extern void	(*kd_dsetcursor)();
+				/* set cursor position on displayed page */
+extern void	(*kd_dreset)();		/* prepare for reboot */
+
+
+/*
+ * Globals used for both character-based controllers and bitmap-based
+ * controllers.
+ */
+typedef	short	csrpos_t;	/* cursor position, ONE_SPACE bytes per char */
+
+extern u_char 	*vid_start;	/* VM start of video RAM or frame buffer */
+extern csrpos_t kd_curpos;		/* should be set only by kd_setpos */
+extern short	kd_lines;		/* num lines in tty display */
+extern short	kd_cols;
+extern char	kd_attr;		/* current character attribute */
+
+
+/*
+ * Globals used only for bitmap-based controllers.
+ * XXX - probably needs reworking for color.
+ */
+
+/*
+ * The following font layout is assumed:
+ *
+ *  The top scan line of all the characters comes first.  Then the
+ *  second scan line, then the third, etc.
+ *
+ *     ------ ... ---------|-----N--------|-------------- ... -----------
+ *     ------ ... ---------|-----N--------|-------------- ... -----------
+ *		.
+ *		.
+ *		.
+ *     ------ ... ---------|-----N--------|-------------- ... -----------
+ *
+ * In the picture, each line is a scan line from the font.  Each scan
+ * line is stored in memory immediately after the previous one.  The
+ * bits between the vertical lines are the bits for a single character
+ * (e.g., the letter "N").
+ * There are "char_height" scan lines.  Each character is "char_width"
+ * bits wide.  We make the simplifying assumption that characters are
+ * on byte boundaries.  (We also assume that a byte is 8 bits.)
+ */
+
+extern u_char	*font_start;		/* starting addr of font */
+
+extern short	fb_width;		/* bits in frame buffer scan line */
+extern short	fb_height;		/* scan lines in frame buffer*/
+extern short	char_width;		/* bit width of 1 char */
+extern short	char_height;		/* bit height of 1 char */
+extern short	chars_in_font;
+extern short	cursor_height;		/* bit height of cursor */
+			/* char_height + cursor_height = line_height */
+
+extern u_char	char_black;		/* 8 black (off) bits */
+extern u_char	char_white;		/* 8 white (on) bits */
+
+
+/*
+ * The tty emulation does not usually require the entire frame buffer.
+ * (xstart, ystart) is the bit address for the upper left corner of the 
+ * tty "screen".
+ */
+
+extern short	xstart, ystart;
+
+
+/*
+ * Accelerators for bitmap displays.
+ */
+
+extern short	char_byte_width;	/* char_width/8 */
+extern short	fb_byte_width;		/* fb_width/8 */
+extern short	font_byte_width;	/* num bytes in 1 scan line of font */