/* * Copyright (c) 2000 Apple Computer, Inc. All rights reserved. * * @APPLE_LICENSE_HEADER_START@ * * The contents of this file constitute Original Code as defined in and * are subject to the Apple Public Source License Version 1.1 (the * "License"). You may not use this file except in compliance with the * License. Please obtain a copy of the License at * http://www.apple.com/publicsource and read it before using this file. * * This Original Code and all software distributed under the License are * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the * License for the specific language governing rights and limitations * under the License. * * @APPLE_LICENSE_HEADER_END@ */ #ifndef _PEXPERT_I386_KDSOFT_H_ #define _PEXPERT_I386_KDSOFT_H_ /* * 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. */ //ERICHACK#include <device/io_req.h> /* * 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 */ extern void bmpput( csrpos_t pos, char ch, char chattr); extern void bmpmvup( csrpos_t from, csrpos_t to, int count); extern void bmpmvdown( csrpos_t from, csrpos_t to, int count); extern void bmpclear( csrpos_t to, int count, char chattr); extern void bmpsetcursor( csrpos_t pos); extern void (*kd_dput)( /* put attributed char */ csrpos_t pos, char ch, char chattr); extern void (*kd_dmvup)( /* block move up */ csrpos_t from, csrpos_t to, int count); extern void (*kd_dmvdown)( /* block move down */ csrpos_t from, csrpos_t to, int count); extern void (*kd_dclear)( /* block clear */ csrpos_t to, int count, char chattr); extern void (*kd_dsetcursor)( /* set cursor position on displayed page */ csrpos_t pos); extern void (*kd_dreset)(void); /* prepare for reboot */ #include <pexpert/i386/kd_entries.h> extern void kdintr( int vec, int regs); #endif /* _PEXPERT_I386_KDSOFT_H_ */