528 lines
10 KiB
C
528 lines
10 KiB
C
/*
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* the Systems Programming Group of the University of Utah Computer
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* Science Department.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: Utah $Hdr: ite.c 1.28 92/12/20$
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*
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* from: @(#)ite.c 8.2 (Berkeley) 1/12/94
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* $Id: ite.c,v 1.2 1994/07/09 06:49:36 briggs Exp $
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*/
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/*
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* ite.c
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*
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* $Id: ite.c,v 1.2 1994/07/09 06:49:36 briggs Exp $
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*
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* The ite module handles the system console; that is, stuff printed
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* by the kernel and by user programs while "desktop" and X aren't
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* running. Some parts are based on hp300's 4.4 ite.c, hence the above
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* copyright.
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*
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* -- Brad and Lawrence, June 26th, 1994
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*
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*/
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#include <sys/param.h>
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#include <sys/conf.h>
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#include <sys/proc.h>
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#include <sys/ioctl.h>
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#include <sys/tty.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/device.h>
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#include <dev/cons.h>
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#include "../mac68k/via.h"
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#include <machine/frame.h>
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#include "keyboard.h"
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#include "adbsys.h"
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#include "6x10.h"
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#define CHARWIDTH 6
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#define CHARHEIGHT 10
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#define dprintf if (0) printf
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/* Received from MacBSDBoot, stored by Locore: */
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long videoaddr;
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long videorowbytes;
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long videobitdepth;
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unsigned long videosize;
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char serial_boot_echo = 0;
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/* Calculated in itecninit(): */
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static int width, height, scrrows, scrcols;
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/* Cursor location: */
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static int x = 0, y = 0;
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/* Our tty: */
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struct tty *ite_tty;
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/* For polled ADB mode: */
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static int polledkey;
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extern int adb_polling;
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/* Misc */
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void itestart();
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/*
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* Bitmap handling functions
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*/
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static void putpixel(int xx, int yy, int c)
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{
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unsigned int mask, i;
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unsigned char *sc;
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sc = (unsigned char *)videoaddr;
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mask = (1 << videobitdepth) - 1;
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c &= mask; /* Not right -- should shift */
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switch (videobitdepth) {
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case 1: i = 7 - (xx & 7);
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c <<= i;
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mask <<= i;
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i = yy * videorowbytes + (xx >> 3);
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sc[i] &= ~mask;
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sc[i] |= c;
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break;
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case 2: i = 6 - ((xx & 3) << 1);
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c <<= i;
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mask <<= i;
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i = yy * videorowbytes + (xx >> 2);
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sc[i] &= ~mask;
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sc[i] |= c;
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break;
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case 4: i = 4 - ((xx & 1) << 2);
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c <<= i;
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mask <<= i;
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i = yy * videorowbytes + (xx >> 1);
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sc[i] &= ~mask;
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sc[i] |= c;
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break;
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case 8: sc[yy * videorowbytes + xx] = c;
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break;
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}
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}
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static void writechar (char ch, int x, int y)
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{
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int i, j, mask;
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unsigned char *c;
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ch &= 0x7F;
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x *= CHARWIDTH;
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y *= CHARHEIGHT;
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c = &Font6x10[ch * CHARHEIGHT];
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for (i = 0; i < CHARHEIGHT; i++) {
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mask = 1 << (CHARWIDTH - 1);
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for (j = 0; j < CHARWIDTH; j++) {
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if (*c & mask) {
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putpixel (x + j, y + i, 255);
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} else {
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putpixel (x + j, y + i, 0);
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}
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mask >>= 1;
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}
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c++;
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}
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}
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static void drawcursor (void)
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{
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int i, j, X, Y;
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X = x * CHARWIDTH;
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Y = y * CHARHEIGHT;
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for (i = 0; i < CHARHEIGHT; i++) {
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for (j = 0; j < CHARWIDTH; j++) {
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putpixel (X + j, Y + i, 255);
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}
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}
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}
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static void erasecursor (void)
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{
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int i, j, X, Y;
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X = x * CHARWIDTH;
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Y = y * CHARHEIGHT;
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for (i = 0; i < CHARHEIGHT; i++) {
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for (j = 0; j < CHARWIDTH; j++) {
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putpixel (X + j, Y + i, 0);
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}
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}
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}
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static void scrollup (void)
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{
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unsigned long *from, *to;
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int i;
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to = (unsigned long *)videoaddr;
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from = to + videorowbytes * CHARHEIGHT / 4;
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for (i = (scrrows - 1) * videorowbytes * CHARHEIGHT / 4; i > 0; i--) {
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*to++ = *from++;
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}
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for (i = videorowbytes * CHARHEIGHT / 4; i > 0; i--) {
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*to++ = 0;
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}
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}
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static void clearscreen (void)
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{
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unsigned long *p;
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int i;
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p = (unsigned long *)videoaddr;
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for (i = scrrows * videorowbytes * CHARHEIGHT / 4; i > 0; i--) {
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*p++ = 0;
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}
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}
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static void ite_putchar (char ch)
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{
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switch (ch) {
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case 7: /* Beep */
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break;
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case 127: /* Delete */
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case 8: if (x > 0) { /* Backspace */
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x--;
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}
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break;
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case 9: do { /* Tab */
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ite_putchar (' ');
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} while (x % 8 != 0);
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break;
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case 10: y++; /* Line feed */
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break;
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case 13: x = 0; /* Carriage return */
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break;
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default:
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if (ch >= ' ') {
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writechar (ch, x, y);
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x++;
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}
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break;
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}
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if (x >= scrcols) {
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x = 0;
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y++;
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}
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if (y >= scrrows) {
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scrollup ();
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y--;
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}
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}
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/*
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* Keyboard support functions
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*/
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static int ite_dopollkey(int key)
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{
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polledkey = key;
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return 0;
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}
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static int ite_pollforchar(void)
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{
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int s;
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register int intbits;
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s = splhigh();
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polledkey = -1;
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adb_polling = 1;
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/* pretend we're VIA interrupt dispatcher */
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while (polledkey == -1) {
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intbits = via_reg(VIA1, vIFR);
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if (intbits & V1IF_ADBRDY) {
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adb_intr();
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via_reg(VIA1, vIFR) = V1IF_ADBRDY;
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}
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}
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adb_polling = 0;
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return polledkey;
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}
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/*
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* Tty handling functions
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*/
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static void iteattach (struct device *parent, struct device *dev, void *aux)
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{
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printf (" (minimal console)\n");
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}
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extern int matchbyname();
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struct cfdriver itecd =
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{ NULL,
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"ite",
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matchbyname,
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iteattach,
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DV_TTY,
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sizeof(struct device),
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NULL,
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0 };
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iteopen(dev_t dev, int mode, int devtype, struct proc *p)
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{
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register struct tty *tp;
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register int error;
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int first = 0;
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dprintf ("iteopen(): enter(0x%x)\n",(int)dev);
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if (ite_tty == NULL)
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tp = ite_tty = ttymalloc();
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else
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tp = ite_tty;
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if ((tp->t_state&(TS_ISOPEN|TS_XCLUDE)) == (TS_ISOPEN|TS_XCLUDE)
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&& p->p_ucred->cr_uid != 0)
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return (EBUSY);
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tp->t_oproc = itestart;
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tp->t_param = NULL;
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tp->t_dev = dev;
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if ((tp->t_state & TS_ISOPEN) == 0) {
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ttychars(tp);
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tp->t_iflag = TTYDEF_IFLAG;
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tp->t_oflag = TTYDEF_OFLAG;
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tp->t_cflag = CS8|CREAD;
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tp->t_lflag = TTYDEF_LFLAG;
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tp->t_ispeed = tp->t_ospeed = TTYDEF_SPEED;
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tp->t_state = TS_ISOPEN|TS_CARR_ON;
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ttsetwater(tp);
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}
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error = (*linesw[tp->t_line].l_open)(dev, tp);
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tp->t_winsize.ws_row = scrrows;
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tp->t_winsize.ws_col = scrcols;
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dprintf ("iteopen(): exit(%d)\n", error);
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return (error);
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}
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iteclose(dev_t dev, int flag, int mode, struct proc *p)
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{
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dprintf ("iteclose: enter (%d)\n", (int)dev);
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(*linesw[ite_tty->t_line].l_close)(ite_tty, flag);
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ttyclose (ite_tty);
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#if 0
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ttyfree (ite_tty);
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ite_tty = (struct tty *)0;
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#endif
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dprintf ("iteclose: exit\n");
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return 0;
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}
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iteread(dev_t dev, struct uio *uio, int flag)
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{
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dprintf ("iteread: enter\n");
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return (*linesw[ite_tty->t_line].l_read)(ite_tty, uio, flag);
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dprintf ("iteread: exit\n");
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}
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itewrite(dev_t dev, struct uio *uio, int flag)
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{
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dprintf ("itewrite: enter\n");
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return (*linesw[ite_tty->t_line].l_write)(ite_tty, uio, flag);
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dprintf ("itewrite: exit\n");
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}
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iteioctl(dev_t dev, int cmd, caddr_t addr, int flag, struct proc *p)
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{
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register struct tty *tp = ite_tty;
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int error;
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dprintf ("iteioctl: enter(%d, 0x%x)\n", cmd, cmd);
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error = (*linesw[tp->t_line].l_ioctl)(tp, cmd, addr, flag, p);
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if (error >= 0) {
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dprintf ("iteioctl: exit(%d)\n", error);
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return (error);
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}
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error = ttioctl(tp, cmd, addr, flag, p);
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if (error >= 0) {
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dprintf ("iteioctl: exit(%d)\n", error);
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return (error);
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}
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dprintf ("iteioctl: exit(ENOTTY)\n");
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return (ENOTTY);
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}
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void itestart (register struct tty *tp)
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{
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register int cc, s;
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int hiwat = 0, hadcursor = 0;
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s = spltty();
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if (tp->t_state & (TS_TIMEOUT|TS_BUSY|TS_TTSTOP)) {
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splx(s);
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return;
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}
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tp->t_state |= TS_BUSY;
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cc = tp->t_outq.c_cc;
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erasecursor ();
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while (cc-- > 0) {
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ite_putchar (getc (&tp->t_outq));
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}
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drawcursor ();
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tp->t_state &= ~TS_BUSY;
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splx(s);
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}
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void itestop (struct tty *tp, int flag)
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{
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int s;
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s = spltty ();
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if (tp->t_state & TS_BUSY) {
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if ((tp->t_state & TS_TTSTOP) == 0) {
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tp->t_state |= TS_FLUSH;
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}
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}
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splx(s);
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}
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ite_intr (adb_event_t *event)
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{
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static int shift = 0, control = 0;
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int key, press, val, state, ch;
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key = event->u.k.key;
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press = ADBK_PRESS (key);
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val = ADBK_KEYVAL (key);
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if (val == ADBK_SHIFT) {
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shift = press;
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} else if (val == ADBK_CONTROL) {
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control = press;
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} else if (press) {
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state = 0;
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if (shift) {
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state = 1;
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}
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if (control) {
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state = 2;
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}
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ch = keyboard[val][state];
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if (ch != '\0') {
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if (adb_polling) {
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polledkey = ch;
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} else {
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(*linesw[ite_tty->t_line].l_rint)(ch, ite_tty);
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}
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}
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}
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}
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/*
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* Console functions
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*/
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itecnprobe(struct consdev *cp)
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{
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int maj, unit;
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/* locate the major number */
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for (maj = 0; maj < nchrdev; maj++) {
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if (cdevsw[maj].d_open == iteopen) {
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break;
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}
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}
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if (maj == nchrdev) {
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panic ("itecnprobe(): did not find iteopen().");
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}
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unit = 0; /* hardcode first device as console. */
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/* initialize required fields */
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cp->cn_dev = makedev (maj, unit);
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cp->cn_pri = CN_INTERNAL;
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}
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itecninit(struct consdev *cp)
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{
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width = videosize & 0xffff;
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height = (videosize >> 16) & 0xffff;
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scrrows = height / CHARHEIGHT;
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scrcols = width / CHARWIDTH;
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clearscreen ();
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}
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itecngetc(dev_t dev)
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{
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/* Oh, man... */
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return ite_pollforchar ();
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}
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itecnputc(dev_t dev, int c)
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{
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int s;
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if (serial_boot_echo) {
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/* Serial delay is automatic */
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#if 0
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macserputchar ((unsigned char)c);
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#endif
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}
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s = splhigh ();
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erasecursor ();
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ite_putchar (c);
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drawcursor ();
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splx (s);
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}
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