Commit aeb3c85f authored by bellard's avatar bellard
Browse files

Cirrus fixes


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@898 c046a42c-6fe2-441c-8c8c-71466251a162
parent 1f04275e
/*
* QEMU Cirrus VGA Emulator.
* QEMU Cirrus CLGD 54xx VGA Emulator.
*
* Copyright (c) 2004 Fabrice Bellard
* Copyright (c) 2004 Suzu
* Copyright (c) 2004 Makoto Suzuki (suzu)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
......@@ -22,6 +22,10 @@
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/*
* Reference: Finn Thogersons' VGADOC4b
* available at http://home.worldonline.dk/~finth/
*/
#include "vl.h"
#include "vga_int.h"
......@@ -478,8 +482,8 @@ cirrus_colorexpand_8(CirrusVGAState * s, uint8_t * dst,
unsigned bitmask;
int srcskipleft = 0;
colors[0] = s->gr[0x00];
colors[1] = s->gr[0x01];
colors[0] = s->cirrus_shadow_gr0;
colors[1] = s->cirrus_shadow_gr1;
bitmask = 0x80 >> srcskipleft;
bits = *src++;
......@@ -504,9 +508,9 @@ cirrus_colorexpand_16(CirrusVGAState * s, uint8_t * dst,
unsigned index;
int srcskipleft = 0;
colors[0][0] = s->gr[0x00];
colors[0][0] = s->cirrus_shadow_gr0;
colors[0][1] = s->gr[0x10];
colors[1][0] = s->gr[0x01];
colors[1][0] = s->cirrus_shadow_gr1;
colors[1][1] = s->gr[0x11];
bitmask = 0x80 >> srcskipleft;
......@@ -534,10 +538,10 @@ cirrus_colorexpand_24(CirrusVGAState * s, uint8_t * dst,
unsigned index;
int srcskipleft = 0;
colors[0][0] = s->gr[0x00];
colors[0][0] = s->cirrus_shadow_gr0;
colors[0][1] = s->gr[0x10];
colors[0][2] = s->gr[0x12];
colors[1][0] = s->gr[0x01];
colors[1][0] = s->cirrus_shadow_gr1;
colors[1][1] = s->gr[0x11];
colors[1][2] = s->gr[0x13];
......@@ -567,11 +571,11 @@ cirrus_colorexpand_32(CirrusVGAState * s, uint8_t * dst,
unsigned index;
int srcskipleft = 0;
colors[0][0] = s->gr[0x00];
colors[0][0] = s->cirrus_shadow_gr0;
colors[0][1] = s->gr[0x10];
colors[0][2] = s->gr[0x12];
colors[0][3] = s->gr[0x14];
colors[1][0] = s->gr[0x01];
colors[1][0] = s->cirrus_shadow_gr1;
colors[1][1] = s->gr[0x11];
colors[1][2] = s->gr[0x13];
colors[1][3] = s->gr[0x15];
......@@ -1103,7 +1107,7 @@ static int cirrus_get_bpp(VGAState *s1)
}
} else {
/* VGA */
ret = 8;
ret = 0;
}
return ret;
......@@ -1172,16 +1176,6 @@ cirrus_hook_read_sr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
case 0x06: // Unlock Cirrus extensions
*reg_value = s->sr[reg_index];
break;
case 0x05: // ???
case 0x07: // Extended Sequencer Mode
case 0x08: // EEPROM Control
case 0x09: // Scratch Register 0
case 0x0a: // Scratch Register 1
case 0x0b: // VCLK 0
case 0x0c: // VCLK 1
case 0x0d: // VCLK 2
case 0x0e: // VCLK 3
case 0x0f: // DRAM Control
case 0x10:
case 0x30:
case 0x50:
......@@ -1190,6 +1184,8 @@ cirrus_hook_read_sr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
case 0xb0:
case 0xd0:
case 0xf0: // Graphics Cursor X
*reg_value = s->sr[0x10];
break;
case 0x11:
case 0x31:
case 0x51:
......@@ -1197,6 +1193,18 @@ cirrus_hook_read_sr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
case 0x91:
case 0xb1:
case 0xd1:
*reg_value = s->sr[0x11];
break;
case 0x05: // ???
case 0x07: // Extended Sequencer Mode
case 0x08: // EEPROM Control
case 0x09: // Scratch Register 0
case 0x0a: // Scratch Register 1
case 0x0b: // VCLK 0
case 0x0c: // VCLK 1
case 0x0d: // VCLK 2
case 0x0e: // VCLK 3
case 0x0f: // DRAM Control
case 0xf1: // Graphics Cursor Y
case 0x12: // Graphics Cursor Attribute
case 0x13: // Graphics Cursor Pattern Address
......@@ -1387,6 +1395,12 @@ static int
cirrus_hook_read_gr(CirrusVGAState * s, unsigned reg_index, int *reg_value)
{
switch (reg_index) {
case 0x00: // Standard VGA, BGCOLOR 0x000000ff
*reg_value = s->cirrus_shadow_gr0;
return CIRRUS_HOOK_HANDLED;
case 0x01: // Standard VGA, FGCOLOR 0x000000ff
*reg_value = s->cirrus_shadow_gr1;
return CIRRUS_HOOK_HANDLED;
case 0x02: // Standard VGA
case 0x03: // Standard VGA
case 0x04: // Standard VGA
......@@ -1416,10 +1430,10 @@ cirrus_hook_write_gr(CirrusVGAState * s, unsigned reg_index, int reg_value)
{
switch (reg_index) {
case 0x00: // Standard VGA, BGCOLOR 0x000000ff
s->gr[0x00] = reg_value;
s->cirrus_shadow_gr0 = reg_value;
return CIRRUS_HOOK_NOT_HANDLED;
case 0x01: // Standard VGA, FGCOLOR 0x000000ff
s->gr[0x01] = reg_value;
s->cirrus_shadow_gr1 = reg_value;
return CIRRUS_HOOK_NOT_HANDLED;
case 0x02: // Standard VGA
case 0x03: // Standard VGA
......@@ -1840,9 +1854,9 @@ static void cirrus_mem_writeb_mode4and5_8bpp(CirrusVGAState * s,
dst = s->vram_ptr + offset;
for (x = 0; x < 8; x++) {
if (val & 0x80) {
*dst++ = s->gr[0x01];
*dst++ = s->cirrus_shadow_gr1;
} else if (mode == 5) {
*dst++ = s->gr[0x00];
*dst++ = s->cirrus_shadow_gr0;
}
val <<= 1;
}
......@@ -1862,10 +1876,10 @@ static void cirrus_mem_writeb_mode4and5_16bpp(CirrusVGAState * s,
dst = s->vram_ptr + offset;
for (x = 0; x < 8; x++) {
if (val & 0x80) {
*dst++ = s->gr[0x01];
*dst++ = s->cirrus_shadow_gr1;
*dst++ = s->gr[0x11];
} else if (mode == 5) {
*dst++ = s->gr[0x00];
*dst++ = s->cirrus_shadow_gr0;
*dst++ = s->gr[0x10];
}
val <<= 1;
......@@ -1891,6 +1905,8 @@ static uint32_t cirrus_vga_mem_readb(void *opaque, target_phys_addr_t addr)
return vga_mem_readb(s, addr);
}
addr &= 0x1ffff;
if (addr < 0x10000) {
/* XXX handle bitblt */
/* video memory */
......@@ -1965,6 +1981,8 @@ static void cirrus_vga_mem_writeb(void *opaque, target_phys_addr_t addr,
return;
}
addr &= 0x1ffff;
if (addr < 0x10000) {
if (s->cirrus_srcptr != s->cirrus_srcptr_end) {
/* bitblt */
......@@ -2282,11 +2300,6 @@ static uint32_t vga_ioport_read(void *opaque, uint32_t addr)
val = s->cr[s->cr_index];
#ifdef DEBUG_VGA_REG
printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
#endif
#ifdef DEBUG_S3
if (s->cr_index >= 0x20)
printf("S3: CR read index=0x%x val=0x%x\n",
s->cr_index, val);
#endif
break;
case 0x3ba:
......
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