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/* $XConsortium: ibm8514init.c,v 1.1 94/03/28 21:05:21 dpw Exp $ */
/* $XFree86: xc/programs/Xserver/hw/xfree86/accel/ibm8514/init.c,v 3.1 1994/08/01 13:18:07 dawes Exp $ */
/*
* Written by Jake Richter
* Copyright (c) 1989, 1990 Panacea Inc., Londonderry, NH - All Rights Reserved
*
* This code may be freely incorporated in any program without royalty, as
* long as the copyright notice stays intact.
*
* Additions by Kevin E. Martin (martin@cs.unc.edu)
*
* KEVIN E. MARTIN AND TIAGO GONS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS,
* IN NO EVENT SHALL KEVIN E. MARTIN OR TIAGO GONS BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
* CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Modified by Tiago Gons (tiago@comosjn.hobby.nl)
*/
#include "X.h"
#include "input.h"
#include "reg8514.h"
#include "ibm8514.h"
#include "xf86.h"
#include "xf86_OSlib.h"
static short numPlanes = -1;
static short resolution = -1;
static short old_DAC_MASK = -1;
static LUTENTRY oldlut[256];
static short LUTInited = -1;
void ibm8514CleanUp(void)
{
int i;
if (LUTInited != -1) {
outb(DAC_W_INDEX, 0);
for (i = 0; i < 256; i++) {
outb(DAC_DATA, oldlut[i].r);
outb(DAC_DATA, oldlut[i].g);
outb(DAC_DATA, oldlut[i].b);
}
}
if (old_DAC_MASK != -1) {
outb(DAC_MASK, old_DAC_MASK);
}
outw(ADVFUNC_CNTL, 6);
xf86DisableIOPorts(ibm8514InfoRec.scrnIndex);
}
/* ibm8514Init(res)
Initializes the 8514/A into the requested resolution. Valid input
values are 0 for 640x480 and 1 for 1024x768.
*/
void ibm8514Init(short res)
{
static short initRegs[] = {
DISP_CNTL, ADVFUNC_CNTL, V_TOTAL, V_SYNC_STRT,
V_DISP, H_TOTAL, H_SYNC_STRT, H_DISP,
H_SYNC_WID, V_SYNC_WID, DISP_CNTL, 0
};
static short mode640x4[] = {
0x0041, 0x0003, 0x0830, 0x07a8,
0x0779, 0x0063, 0x0052, 0x004f,
0x002c, 0x0022, 0x0021
};
static short mode640x8[] = {
0x0043, 0x0003, 0x0418, 0x03d2,
0x033b, 0x0063, 0x0052, 0x004f,
0x002c, 0x0022, 0x0023
};
static short mode1024x4[] = {
0x0053, 0x0007, 0x0660, 0x0600,
0x05fb, 0x009d, 0x0081, 0x007f,
0x0016, 0x0008, 0x0033
};
static short mode1024x8[] = {
0x0053, 0x0007, 0x0660, 0x0600,
0x05fb, 0x009d, 0x0081, 0x007f,
0x0016, 0x0008, 0x0033
};
static short *modeList[] = {mode640x4, mode1024x4, mode640x8, mode1024x8};
short i;
/* Get board status information */
i = inw(SUBSYS_STAT);
#if 0
/* Check if monitor capable of 1024x768 is attached.
* If not, print error message and abort.
* In this case, we want an IBM 8514 compatible monitor.
*/
if ((i & MONITORID_MASK) != MONITORID_8514) {
ibm8514CleanUp();
FatalError("Attached monitor not capable of displaying 8514!\n");
}
#endif
old_DAC_MASK = inb(DAC_MASK);
outb(DAC_MASK, 0x00);
/* Determine the pixel depth of the board. Then, based on depth,
* set the memory control register use the appropriate CAS (VRAM
* Column Address Select) configuration.
*/
if (i & _8PLANE) {
numPlanes = 8;
outw(MULTIFUNC_CNTL, MEM_CNTL | VRTCFG_4 | HORCFG_8);
} else {
numPlanes = 4;
ibm8514CleanUp();
FatalError("Video card only has 512Kb (1Mb required)!\n");
}
/* Now initialize the display controller part of the 8514/A.
* We have set up the initialization values in two sets of
* tables: 4 bpp and 8 bpp. The "numPlanes" comparison below
* determines which set of values to use (dual indices).
*/
for (i = 0; initRegs[i] != 0; i++)
outw(initRegs[i], modeList[res + (numPlanes == 4 ? 0:2)][i]);
/* Now reenable the screen, but only the planes that actually exist.
* Otherwise, you end up with bus noise on the display.
*/
if (numPlanes == 8)
outb(DAC_MASK, 0xff);
else
outb(DAC_MASK, 0x0f);
resolution = res;
}
/* InitLUT()
Loads the Look-Up Table with all black.
Assumes 8-bit board is in use. If 4 bit board, the only the first
16 entries in LUT will be used.
*/
void InitLUT(void)
{
short i, j;
outb(DAC_R_INDEX, 0);
for (i = 0; i < 256; i++) {
oldlut[i].r = inb(DAC_DATA);
oldlut[i].g = inb(DAC_DATA);
oldlut[i].b = inb(DAC_DATA);
}
LUTInited = 1;
outb(DAC_W_INDEX, 0);
/* Load the first 16 LUT entries */
for (i = 0; i < 16; i++) {
outb(DAC_DATA, 0);
outb(DAC_DATA, 0);
outb(DAC_DATA, 0);
}
if (numPlanes == 8) {
/* Load the remaining 240 LUT entries */
for (i = 1; i < 16; i++) {
for (j = 0; j < 16; j++) {
outb(DAC_DATA, 0);
outb(DAC_DATA, 0);
outb(DAC_DATA, 0);
}
}
}
}
/* InitEnvironment()
Initializes the 8514/A's drawing environment and clears the display.
*/
void InitEnvironment(void)
{
InitLUT();
/* Current mixes, src, foreground active */
outw(FRGD_MIX, FSS_FRGDCOL | MIX_SRC);
outw(BKGD_MIX, BSS_BKGDCOL | MIX_SRC);
/* Clipping rectangle to full drawable space */
outw(MULTIFUNC_CNTL, SCISSORS_T | 0x000);
outw(MULTIFUNC_CNTL, SCISSORS_L | 0x000);
if (resolution == MODE_640) {
outw(MULTIFUNC_CNTL, SCISSORS_R | 0x3ff); /* Should these be */
outw(MULTIFUNC_CNTL, SCISSORS_B | 0x3ff); /* different??? */
} else {
outw(MULTIFUNC_CNTL, SCISSORS_R | 0x3ff);
outw(MULTIFUNC_CNTL, SCISSORS_B | 0x3ff);
}
/* Enable writes to all planes and reset color compare */
outw(WRT_MASK, 0xffff);
outw(MULTIFUNC_CNTL, PIX_CNTL | 0x0000);
#ifndef DIRTY_STARTUP
if (serverGeneration == 1) /* 5-5-93 TCG : servergen.. is always 1 ? */
{
/* Clear the display. Need to set the color, origin, and size.
* Then draw.
*/
WaitQueue(6);
outw(FRGD_COLOR, 1);
outw(CUR_X, 0);
outw(CUR_Y, 0);
outw(MAJ_AXIS_PCNT, 1023);
outw(MULTIFUNC_CNTL, MIN_AXIS_PCNT | 1023);
outw(CMD, CMD_RECT | INC_Y | INC_X | DRAW | PLANAR | WRTDATA);
}
#endif /* ! DIRTY_STARTUP */
WaitQueue(4);
/* Reset current draw position */
outw(CUR_X, 0);
outw(CUR_Y, 0);
/* Reset current colors, foreground is all on, background is 0. */
outw(FRGD_COLOR, 0xffff);
outw(BKGD_COLOR, 0x0000);
}
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