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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
* Copyright 2018 Toomas Soome <tsoome@me.com>
*/
/*
* Support routines for VGA drivers
*/
#if defined(_KERNEL)
#include <sys/debug.h>
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/buf.h>
#include <sys/errno.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/cmn_err.h>
#include <sys/kmem.h>
#include <sys/conf.h>
#include <sys/ddi.h>
#include <sys/devops.h>
#include <sys/sunddi.h>
#include <sys/modctl.h>
#define PUTB(reg, off, v) ddi_put8(reg->handle, reg->addr + (off), v)
#define GETB(reg, off) ddi_get8(reg->handle, reg->addr + (off))
#elif defined(_STANDALONE)
#include <stand.h>
#include <machine/cpufunc.h>
#define PUTB(reg, off, v) outb(reg + (off), v)
#define GETB(reg, off) inb(reg + (off))
#endif
#include <sys/vgareg.h>
#include <sys/vgasubr.h>
#define GET_HORIZ_END(c) vga_get_crtc(c, VGA_CRTC_H_D_END)
#define GET_VERT_END(c) (vga_get_crtc(c, VGA_CRTC_VDE) \
+ (((vga_get_crtc(c, VGA_CRTC_OVFL_REG) >> \
VGA_CRTC_OVFL_REG_VDE8) & 1) << 8) \
+ (((vga_get_crtc(c, VGA_CRTC_OVFL_REG) >> \
VGA_CRTC_OVFL_REG_VDE9) & 1) << 9))
#define GET_VERT_X2(c) \
(vga_get_crtc(c, VGA_CRTC_CRT_MD) & VGA_CRTC_CRT_MD_VT_X2)
unsigned char VGA_CRTC_TEXT[NUM_CRTC_REG] = {
0x5f, 0x4f, 0x50, 0x82, 0x55, 0x81, 0xbf, 0x1f,
0x00, 0x4f, 0x0d, 0x0e, 0x00, 0x00, 0x05, 0x00,
0x9c, 0x8e, 0x8f, 0x28, 0x1f, 0x96, 0xb9, 0xa3,
0xff };
unsigned char VGA_SEQ_TEXT[NUM_SEQ_REG] = {
0x03, 0x00, 0x03, 0x00, 0x02 };
unsigned char VGA_GRC_TEXT[NUM_GRC_REG] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x0e, 0x00, 0xff };
unsigned char VGA_ATR_TEXT[NUM_ATR_REG] = {
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x14, 0x07,
0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
0x0c, 0x00, 0x0f, 0x08, 0x00 };
void
vga_get_hardware_settings(vgaregmap_t reg, int *width, int *height)
{
*width = (GET_HORIZ_END(reg)+1)*8;
*height = GET_VERT_END(reg)+1;
if (GET_VERT_X2(reg)) *height *= 2;
}
int
vga_get_reg(vgaregmap_t reg, int indexreg)
{
return (GETB(reg, indexreg));
}
void
vga_set_reg(vgaregmap_t reg, int indexreg, int v)
{
PUTB(reg, indexreg, v);
}
int
vga_get_crtc(vgaregmap_t reg, int i)
{
return (vga_get_indexed(reg, VGA_CRTC_ADR, VGA_CRTC_DATA, i));
}
void
vga_set_crtc(vgaregmap_t reg, int i, int v)
{
vga_set_indexed(reg, VGA_CRTC_ADR, VGA_CRTC_DATA, i, v);
}
int
vga_get_seq(vgaregmap_t reg, int i)
{
return (vga_get_indexed(reg, VGA_SEQ_ADR, VGA_SEQ_DATA, i));
}
void
vga_set_seq(vgaregmap_t reg, int i, int v)
{
vga_set_indexed(reg, VGA_SEQ_ADR, VGA_SEQ_DATA, i, v);
}
int
vga_get_grc(vgaregmap_t reg, int i)
{
return (vga_get_indexed(reg, VGA_GRC_ADR, VGA_GRC_DATA, i));
}
void
vga_set_grc(vgaregmap_t reg, int i, int v)
{
vga_set_indexed(reg, VGA_GRC_ADR, VGA_GRC_DATA, i, v);
}
int
vga_get_atr(vgaregmap_t reg, int i)
{
int ret;
(void) GETB(reg, CGA_STAT);
PUTB(reg, VGA_ATR_AD, i);
ret = GETB(reg, VGA_ATR_DATA);
(void) GETB(reg, CGA_STAT);
PUTB(reg, VGA_ATR_AD, VGA_ATR_ENB_PLT);
return (ret);
}
void
vga_set_atr(vgaregmap_t reg, int i, int v)
{
(void) GETB(reg, CGA_STAT);
PUTB(reg, VGA_ATR_AD, i);
PUTB(reg, VGA_ATR_AD, v);
(void) GETB(reg, CGA_STAT);
PUTB(reg, VGA_ATR_AD, VGA_ATR_ENB_PLT);
}
void
vga_set_indexed(
vgaregmap_t reg,
int indexreg,
int datareg,
unsigned char index,
unsigned char val)
{
PUTB(reg, indexreg, index);
PUTB(reg, datareg, val);
}
int
vga_get_indexed(
vgaregmap_t reg,
int indexreg,
int datareg,
unsigned char index)
{
PUTB(reg, indexreg, index);
return (GETB(reg, datareg));
}
/*
* VGA DAC access functions
* Note: These assume a VGA-style 6-bit DAC. Some DACs are 8 bits
* wide. These functions are not appropriate for those DACs.
*/
void
vga_put_cmap(
vgaregmap_t reg,
int index,
unsigned char r,
unsigned char g,
unsigned char b)
{
PUTB(reg, VGA_DAC_WR_AD, index);
PUTB(reg, VGA_DAC_DATA, r >> 2);
PUTB(reg, VGA_DAC_DATA, g >> 2);
PUTB(reg, VGA_DAC_DATA, b >> 2);
}
void
vga_get_cmap(
vgaregmap_t reg,
int index,
unsigned char *r,
unsigned char *g,
unsigned char *b)
{
PUTB(reg, VGA_DAC_RD_AD, index);
*r = GETB(reg, VGA_DAC_DATA) << 2;
*g = GETB(reg, VGA_DAC_DATA) << 2;
*b = GETB(reg, VGA_DAC_DATA) << 2;
}
#ifdef DEBUG
void
vga_dump_regs(vgaregmap_t reg, int maxseq, int maxcrtc, int maxatr, int maxgrc)
{
int i, j;
printf("Sequencer regs:\n");
for (i = 0; i < maxseq; i += 0x10) {
printf("%2x: ", i);
for (j = 0; j < 0x08; j++) {
printf("%2x ", vga_get_seq(reg, i+j));
}
printf("- ");
for (; j < 0x10; j++) {
printf("%2x ", vga_get_seq(reg, i+j));
}
printf("\n");
}
printf("\nCRT Controller regs:\n");
for (i = 0; i < maxcrtc; i += 0x10) {
printf("%2x: ", i);
for (j = 0; j < 0x08; j++) {
printf("%2x ", vga_get_crtc(reg, i+j));
}
printf("- ");
for (; j < 0x10; j++) {
printf("%2x ", vga_get_crtc(reg, i+j));
}
printf("\n");
}
printf("\nAttribute Controller regs:\n");
for (i = 0; i < maxatr; i += 0x10) {
printf("%2x: ", i);
for (j = 0; j < 0x08; j++) {
printf("%2x ", vga_get_atr(reg, i+j));
}
printf("- ");
for (; j < 0x10; j++) {
printf("%2x ", vga_get_atr(reg, i+j));
}
printf("\n");
}
printf("\nGraphics Controller regs:\n");
for (i = 0; i < maxgrc; i += 0x10) {
printf("%2x: ", i);
for (j = 0; j < 0x08; j++) {
printf("%2x ", vga_get_grc(reg, i+j));
}
printf("- ");
for (; j < 0x10; j++) {
printf("%2x ", vga_get_grc(reg, i+j));
}
printf("\n");
}
}
#endif /* DEBUG */
/*
* VGA 80X25 text mode standard palette
*/
unsigned char VGA_TEXT_PALETTES[64][3] = {
{ 0x00, 0x00, 0x00 },
{ 0x00, 0x00, 0x2A },
{ 0x00, 0x2A, 0x00 },
{ 0x00, 0x2A, 0x2A },
{ 0x2A, 0x00, 0x00 },
{ 0x2A, 0x00, 0x2A },
{ 0x2A, 0x2A, 0x00 },
{ 0x2A, 0x2A, 0x2A },
{ 0x00, 0x00, 0x15 },
{ 0x00, 0x00, 0x3F },
{ 0x00, 0x2A, 0x15 },
{ 0x00, 0x2A, 0x3F },
{ 0x2A, 0x00, 0x15 },
{ 0x2A, 0x00, 0x3F },
{ 0x2A, 0x2A, 0x15 },
{ 0x2A, 0x2A, 0x3F },
{ 0x00, 0x15, 0x00 },
{ 0x00, 0x15, 0x2A },
{ 0x00, 0x3F, 0x00 },
{ 0x00, 0x3F, 0x2A },
{ 0x2A, 0x15, 0x00 },
{ 0x2A, 0x15, 0x2A },
{ 0x2A, 0x3F, 0x00 },
{ 0x2A, 0x3F, 0x2A },
{ 0x00, 0x15, 0x15 },
{ 0x00, 0x15, 0x3F },
{ 0x00, 0x3F, 0x15 },
{ 0x00, 0x3F, 0x3F },
{ 0x2A, 0x15, 0x15 },
{ 0x2A, 0x15, 0x3F },
{ 0x2A, 0x3F, 0x15 },
{ 0x2A, 0x3F, 0x3F },
{ 0x15, 0x00, 0x00 },
{ 0x15, 0x00, 0x2A },
{ 0x15, 0x2A, 0x00 },
{ 0x15, 0x2A, 0x2A },
{ 0x3F, 0x00, 0x00 },
{ 0x3F, 0x00, 0x2A },
{ 0x3F, 0x2A, 0x00 },
{ 0x3F, 0x2A, 0x2A },
{ 0x15, 0x00, 0x15 },
{ 0x15, 0x00, 0x3F },
{ 0x15, 0x2A, 0x15 },
{ 0x15, 0x2A, 0x3F },
{ 0x3F, 0x00, 0x15 },
{ 0x3F, 0x00, 0x3F },
{ 0x3F, 0x2A, 0x15 },
{ 0x3F, 0x2A, 0x3F },
{ 0x15, 0x15, 0x00 },
{ 0x15, 0x15, 0x2A },
{ 0x15, 0x3F, 0x00 },
{ 0x15, 0x3F, 0x2A },
{ 0x3F, 0x15, 0x00 },
{ 0x3F, 0x15, 0x2A },
{ 0x3F, 0x3F, 0x00 },
{ 0x3F, 0x3F, 0x2A },
{ 0x15, 0x15, 0x15 },
{ 0x15, 0x15, 0x3F },
{ 0x15, 0x3F, 0x15 },
{ 0x15, 0x3F, 0x3F },
{ 0x3F, 0x15, 0x15 },
{ 0x3F, 0x15, 0x3F },
{ 0x3F, 0x3F, 0x15 },
{ 0x3F, 0x3F, 0x3F }
};
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