root / hw / vga.c @ 7bc3018b
History | View | Annotate | Download (70.9 kB)
| 1 |
/*
|
|---|---|
| 2 |
* QEMU VGA Emulator.
|
| 3 |
*
|
| 4 |
* Copyright (c) 2003 Fabrice Bellard
|
| 5 |
*
|
| 6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
| 7 |
* of this software and associated documentation files (the "Software"), to deal
|
| 8 |
* in the Software without restriction, including without limitation the rights
|
| 9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
| 10 |
* copies of the Software, and to permit persons to whom the Software is
|
| 11 |
* furnished to do so, subject to the following conditions:
|
| 12 |
*
|
| 13 |
* The above copyright notice and this permission notice shall be included in
|
| 14 |
* all copies or substantial portions of the Software.
|
| 15 |
*
|
| 16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
| 17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
| 18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
| 19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
| 20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
| 21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
| 22 |
* THE SOFTWARE.
|
| 23 |
*/
|
| 24 |
#include "hw.h" |
| 25 |
#include "vga.h" |
| 26 |
#include "console.h" |
| 27 |
#include "pc.h" |
| 28 |
#include "pci.h" |
| 29 |
#include "vga_int.h" |
| 30 |
#include "pixel_ops.h" |
| 31 |
#include "qemu-timer.h" |
| 32 |
#include "xen.h" |
| 33 |
#include "trace.h" |
| 34 |
|
| 35 |
//#define DEBUG_VGA
|
| 36 |
//#define DEBUG_VGA_MEM
|
| 37 |
//#define DEBUG_VGA_REG
|
| 38 |
|
| 39 |
//#define DEBUG_BOCHS_VBE
|
| 40 |
|
| 41 |
/*
|
| 42 |
* Video Graphics Array (VGA)
|
| 43 |
*
|
| 44 |
* Chipset docs for original IBM VGA:
|
| 45 |
* http://www.mcamafia.de/pdf/ibm_vgaxga_trm2.pdf
|
| 46 |
*
|
| 47 |
* FreeVGA site:
|
| 48 |
* http://www.osdever.net/FreeVGA/home.htm
|
| 49 |
*
|
| 50 |
* Standard VGA features and Bochs VBE extensions are implemented.
|
| 51 |
*/
|
| 52 |
|
| 53 |
/* force some bits to zero */
|
| 54 |
const uint8_t sr_mask[8] = { |
| 55 |
0x03,
|
| 56 |
0x3d,
|
| 57 |
0x0f,
|
| 58 |
0x3f,
|
| 59 |
0x0e,
|
| 60 |
0x00,
|
| 61 |
0x00,
|
| 62 |
0xff,
|
| 63 |
}; |
| 64 |
|
| 65 |
const uint8_t gr_mask[16] = { |
| 66 |
0x0f, /* 0x00 */ |
| 67 |
0x0f, /* 0x01 */ |
| 68 |
0x0f, /* 0x02 */ |
| 69 |
0x1f, /* 0x03 */ |
| 70 |
0x03, /* 0x04 */ |
| 71 |
0x7b, /* 0x05 */ |
| 72 |
0x0f, /* 0x06 */ |
| 73 |
0x0f, /* 0x07 */ |
| 74 |
0xff, /* 0x08 */ |
| 75 |
0x00, /* 0x09 */ |
| 76 |
0x00, /* 0x0a */ |
| 77 |
0x00, /* 0x0b */ |
| 78 |
0x00, /* 0x0c */ |
| 79 |
0x00, /* 0x0d */ |
| 80 |
0x00, /* 0x0e */ |
| 81 |
0x00, /* 0x0f */ |
| 82 |
}; |
| 83 |
|
| 84 |
#define cbswap_32(__x) \
|
| 85 |
((uint32_t)( \ |
| 86 |
(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ |
| 87 |
(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ |
| 88 |
(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ |
| 89 |
(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )) |
| 90 |
|
| 91 |
#ifdef HOST_WORDS_BIGENDIAN
|
| 92 |
#define PAT(x) cbswap_32(x)
|
| 93 |
#else
|
| 94 |
#define PAT(x) (x)
|
| 95 |
#endif
|
| 96 |
|
| 97 |
#ifdef HOST_WORDS_BIGENDIAN
|
| 98 |
#define BIG 1 |
| 99 |
#else
|
| 100 |
#define BIG 0 |
| 101 |
#endif
|
| 102 |
|
| 103 |
#ifdef HOST_WORDS_BIGENDIAN
|
| 104 |
#define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff) |
| 105 |
#else
|
| 106 |
#define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff) |
| 107 |
#endif
|
| 108 |
|
| 109 |
static const uint32_t mask16[16] = { |
| 110 |
PAT(0x00000000),
|
| 111 |
PAT(0x000000ff),
|
| 112 |
PAT(0x0000ff00),
|
| 113 |
PAT(0x0000ffff),
|
| 114 |
PAT(0x00ff0000),
|
| 115 |
PAT(0x00ff00ff),
|
| 116 |
PAT(0x00ffff00),
|
| 117 |
PAT(0x00ffffff),
|
| 118 |
PAT(0xff000000),
|
| 119 |
PAT(0xff0000ff),
|
| 120 |
PAT(0xff00ff00),
|
| 121 |
PAT(0xff00ffff),
|
| 122 |
PAT(0xffff0000),
|
| 123 |
PAT(0xffff00ff),
|
| 124 |
PAT(0xffffff00),
|
| 125 |
PAT(0xffffffff),
|
| 126 |
}; |
| 127 |
|
| 128 |
#undef PAT
|
| 129 |
|
| 130 |
#ifdef HOST_WORDS_BIGENDIAN
|
| 131 |
#define PAT(x) (x)
|
| 132 |
#else
|
| 133 |
#define PAT(x) cbswap_32(x)
|
| 134 |
#endif
|
| 135 |
|
| 136 |
static const uint32_t dmask16[16] = { |
| 137 |
PAT(0x00000000),
|
| 138 |
PAT(0x000000ff),
|
| 139 |
PAT(0x0000ff00),
|
| 140 |
PAT(0x0000ffff),
|
| 141 |
PAT(0x00ff0000),
|
| 142 |
PAT(0x00ff00ff),
|
| 143 |
PAT(0x00ffff00),
|
| 144 |
PAT(0x00ffffff),
|
| 145 |
PAT(0xff000000),
|
| 146 |
PAT(0xff0000ff),
|
| 147 |
PAT(0xff00ff00),
|
| 148 |
PAT(0xff00ffff),
|
| 149 |
PAT(0xffff0000),
|
| 150 |
PAT(0xffff00ff),
|
| 151 |
PAT(0xffffff00),
|
| 152 |
PAT(0xffffffff),
|
| 153 |
}; |
| 154 |
|
| 155 |
static const uint32_t dmask4[4] = { |
| 156 |
PAT(0x00000000),
|
| 157 |
PAT(0x0000ffff),
|
| 158 |
PAT(0xffff0000),
|
| 159 |
PAT(0xffffffff),
|
| 160 |
}; |
| 161 |
|
| 162 |
static uint32_t expand4[256]; |
| 163 |
static uint16_t expand2[256]; |
| 164 |
static uint8_t expand4to8[16]; |
| 165 |
|
| 166 |
static void vga_screen_dump(void *opaque, const char *filename, bool cswitch); |
| 167 |
|
| 168 |
static void vga_update_memory_access(VGACommonState *s) |
| 169 |
{
|
| 170 |
MemoryRegion *region, *old_region = s->chain4_alias; |
| 171 |
target_phys_addr_t base, offset, size; |
| 172 |
|
| 173 |
s->chain4_alias = NULL;
|
| 174 |
|
| 175 |
if ((s->sr[VGA_SEQ_PLANE_WRITE] & VGA_SR02_ALL_PLANES) ==
|
| 176 |
VGA_SR02_ALL_PLANES && s->sr[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) {
|
| 177 |
offset = 0;
|
| 178 |
switch ((s->gr[VGA_GFX_MISC] >> 2) & 3) { |
| 179 |
case 0: |
| 180 |
base = 0xa0000;
|
| 181 |
size = 0x20000;
|
| 182 |
break;
|
| 183 |
case 1: |
| 184 |
base = 0xa0000;
|
| 185 |
size = 0x10000;
|
| 186 |
offset = s->bank_offset; |
| 187 |
break;
|
| 188 |
case 2: |
| 189 |
base = 0xb0000;
|
| 190 |
size = 0x8000;
|
| 191 |
break;
|
| 192 |
case 3: |
| 193 |
default:
|
| 194 |
base = 0xb8000;
|
| 195 |
size = 0x8000;
|
| 196 |
break;
|
| 197 |
} |
| 198 |
base += isa_mem_base; |
| 199 |
region = g_malloc(sizeof(*region));
|
| 200 |
memory_region_init_alias(region, "vga.chain4", &s->vram, offset, size);
|
| 201 |
memory_region_add_subregion_overlap(s->legacy_address_space, base, |
| 202 |
region, 2);
|
| 203 |
s->chain4_alias = region; |
| 204 |
} |
| 205 |
if (old_region) {
|
| 206 |
memory_region_del_subregion(s->legacy_address_space, old_region); |
| 207 |
memory_region_destroy(old_region); |
| 208 |
g_free(old_region); |
| 209 |
s->plane_updated = 0xf;
|
| 210 |
} |
| 211 |
} |
| 212 |
|
| 213 |
static void vga_dumb_update_retrace_info(VGACommonState *s) |
| 214 |
{
|
| 215 |
(void) s;
|
| 216 |
} |
| 217 |
|
| 218 |
static void vga_precise_update_retrace_info(VGACommonState *s) |
| 219 |
{
|
| 220 |
int htotal_chars;
|
| 221 |
int hretr_start_char;
|
| 222 |
int hretr_skew_chars;
|
| 223 |
int hretr_end_char;
|
| 224 |
|
| 225 |
int vtotal_lines;
|
| 226 |
int vretr_start_line;
|
| 227 |
int vretr_end_line;
|
| 228 |
|
| 229 |
int dots;
|
| 230 |
#if 0
|
| 231 |
int div2, sldiv2;
|
| 232 |
#endif
|
| 233 |
int clocking_mode;
|
| 234 |
int clock_sel;
|
| 235 |
const int clk_hz[] = {25175000, 28322000, 25175000, 25175000}; |
| 236 |
int64_t chars_per_sec; |
| 237 |
struct vga_precise_retrace *r = &s->retrace_info.precise;
|
| 238 |
|
| 239 |
htotal_chars = s->cr[VGA_CRTC_H_TOTAL] + 5;
|
| 240 |
hretr_start_char = s->cr[VGA_CRTC_H_SYNC_START]; |
| 241 |
hretr_skew_chars = (s->cr[VGA_CRTC_H_SYNC_END] >> 5) & 3; |
| 242 |
hretr_end_char = s->cr[VGA_CRTC_H_SYNC_END] & 0x1f;
|
| 243 |
|
| 244 |
vtotal_lines = (s->cr[VGA_CRTC_V_TOTAL] | |
| 245 |
(((s->cr[VGA_CRTC_OVERFLOW] & 1) |
|
| 246 |
((s->cr[VGA_CRTC_OVERFLOW] >> 4) & 2)) << 8)) + 2; |
| 247 |
vretr_start_line = s->cr[VGA_CRTC_V_SYNC_START] | |
| 248 |
((((s->cr[VGA_CRTC_OVERFLOW] >> 2) & 1) | |
| 249 |
((s->cr[VGA_CRTC_OVERFLOW] >> 6) & 2)) << 8); |
| 250 |
vretr_end_line = s->cr[VGA_CRTC_V_SYNC_END] & 0xf;
|
| 251 |
|
| 252 |
clocking_mode = (s->sr[VGA_SEQ_CLOCK_MODE] >> 3) & 1; |
| 253 |
clock_sel = (s->msr >> 2) & 3; |
| 254 |
dots = (s->msr & 1) ? 8 : 9; |
| 255 |
|
| 256 |
chars_per_sec = clk_hz[clock_sel] / dots; |
| 257 |
|
| 258 |
htotal_chars <<= clocking_mode; |
| 259 |
|
| 260 |
r->total_chars = vtotal_lines * htotal_chars; |
| 261 |
if (r->freq) {
|
| 262 |
r->ticks_per_char = get_ticks_per_sec() / (r->total_chars * r->freq); |
| 263 |
} else {
|
| 264 |
r->ticks_per_char = get_ticks_per_sec() / chars_per_sec; |
| 265 |
} |
| 266 |
|
| 267 |
r->vstart = vretr_start_line; |
| 268 |
r->vend = r->vstart + vretr_end_line + 1;
|
| 269 |
|
| 270 |
r->hstart = hretr_start_char + hretr_skew_chars; |
| 271 |
r->hend = r->hstart + hretr_end_char + 1;
|
| 272 |
r->htotal = htotal_chars; |
| 273 |
|
| 274 |
#if 0
|
| 275 |
div2 = (s->cr[VGA_CRTC_MODE] >> 2) & 1;
|
| 276 |
sldiv2 = (s->cr[VGA_CRTC_MODE] >> 3) & 1;
|
| 277 |
printf (
|
| 278 |
"hz=%f\n"
|
| 279 |
"htotal = %d\n"
|
| 280 |
"hretr_start = %d\n"
|
| 281 |
"hretr_skew = %d\n"
|
| 282 |
"hretr_end = %d\n"
|
| 283 |
"vtotal = %d\n"
|
| 284 |
"vretr_start = %d\n"
|
| 285 |
"vretr_end = %d\n"
|
| 286 |
"div2 = %d sldiv2 = %d\n"
|
| 287 |
"clocking_mode = %d\n"
|
| 288 |
"clock_sel = %d %d\n"
|
| 289 |
"dots = %d\n"
|
| 290 |
"ticks/char = %" PRId64 "\n"
|
| 291 |
"\n",
|
| 292 |
(double) get_ticks_per_sec() / (r->ticks_per_char * r->total_chars),
|
| 293 |
htotal_chars,
|
| 294 |
hretr_start_char,
|
| 295 |
hretr_skew_chars,
|
| 296 |
hretr_end_char,
|
| 297 |
vtotal_lines,
|
| 298 |
vretr_start_line,
|
| 299 |
vretr_end_line,
|
| 300 |
div2, sldiv2,
|
| 301 |
clocking_mode,
|
| 302 |
clock_sel,
|
| 303 |
clk_hz[clock_sel],
|
| 304 |
dots,
|
| 305 |
r->ticks_per_char
|
| 306 |
);
|
| 307 |
#endif
|
| 308 |
} |
| 309 |
|
| 310 |
static uint8_t vga_precise_retrace(VGACommonState *s)
|
| 311 |
{
|
| 312 |
struct vga_precise_retrace *r = &s->retrace_info.precise;
|
| 313 |
uint8_t val = s->st01 & ~(ST01_V_RETRACE | ST01_DISP_ENABLE); |
| 314 |
|
| 315 |
if (r->total_chars) {
|
| 316 |
int cur_line, cur_line_char, cur_char;
|
| 317 |
int64_t cur_tick; |
| 318 |
|
| 319 |
cur_tick = qemu_get_clock_ns(vm_clock); |
| 320 |
|
| 321 |
cur_char = (cur_tick / r->ticks_per_char) % r->total_chars; |
| 322 |
cur_line = cur_char / r->htotal; |
| 323 |
|
| 324 |
if (cur_line >= r->vstart && cur_line <= r->vend) {
|
| 325 |
val |= ST01_V_RETRACE | ST01_DISP_ENABLE; |
| 326 |
} else {
|
| 327 |
cur_line_char = cur_char % r->htotal; |
| 328 |
if (cur_line_char >= r->hstart && cur_line_char <= r->hend) {
|
| 329 |
val |= ST01_DISP_ENABLE; |
| 330 |
} |
| 331 |
} |
| 332 |
|
| 333 |
return val;
|
| 334 |
} else {
|
| 335 |
return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
|
| 336 |
} |
| 337 |
} |
| 338 |
|
| 339 |
static uint8_t vga_dumb_retrace(VGACommonState *s)
|
| 340 |
{
|
| 341 |
return s->st01 ^ (ST01_V_RETRACE | ST01_DISP_ENABLE);
|
| 342 |
} |
| 343 |
|
| 344 |
int vga_ioport_invalid(VGACommonState *s, uint32_t addr)
|
| 345 |
{
|
| 346 |
if (s->msr & VGA_MIS_COLOR) {
|
| 347 |
/* Color */
|
| 348 |
return (addr >= 0x3b0 && addr <= 0x3bf); |
| 349 |
} else {
|
| 350 |
/* Monochrome */
|
| 351 |
return (addr >= 0x3d0 && addr <= 0x3df); |
| 352 |
} |
| 353 |
} |
| 354 |
|
| 355 |
uint32_t vga_ioport_read(void *opaque, uint32_t addr)
|
| 356 |
{
|
| 357 |
VGACommonState *s = opaque; |
| 358 |
int val, index;
|
| 359 |
|
| 360 |
if (vga_ioport_invalid(s, addr)) {
|
| 361 |
val = 0xff;
|
| 362 |
} else {
|
| 363 |
switch(addr) {
|
| 364 |
case VGA_ATT_W:
|
| 365 |
if (s->ar_flip_flop == 0) { |
| 366 |
val = s->ar_index; |
| 367 |
} else {
|
| 368 |
val = 0;
|
| 369 |
} |
| 370 |
break;
|
| 371 |
case VGA_ATT_R:
|
| 372 |
index = s->ar_index & 0x1f;
|
| 373 |
if (index < VGA_ATT_C) {
|
| 374 |
val = s->ar[index]; |
| 375 |
} else {
|
| 376 |
val = 0;
|
| 377 |
} |
| 378 |
break;
|
| 379 |
case VGA_MIS_W:
|
| 380 |
val = s->st00; |
| 381 |
break;
|
| 382 |
case VGA_SEQ_I:
|
| 383 |
val = s->sr_index; |
| 384 |
break;
|
| 385 |
case VGA_SEQ_D:
|
| 386 |
val = s->sr[s->sr_index]; |
| 387 |
#ifdef DEBUG_VGA_REG
|
| 388 |
printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
|
| 389 |
#endif
|
| 390 |
break;
|
| 391 |
case VGA_PEL_IR:
|
| 392 |
val = s->dac_state; |
| 393 |
break;
|
| 394 |
case VGA_PEL_IW:
|
| 395 |
val = s->dac_write_index; |
| 396 |
break;
|
| 397 |
case VGA_PEL_D:
|
| 398 |
val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
|
| 399 |
if (++s->dac_sub_index == 3) { |
| 400 |
s->dac_sub_index = 0;
|
| 401 |
s->dac_read_index++; |
| 402 |
} |
| 403 |
break;
|
| 404 |
case VGA_FTC_R:
|
| 405 |
val = s->fcr; |
| 406 |
break;
|
| 407 |
case VGA_MIS_R:
|
| 408 |
val = s->msr; |
| 409 |
break;
|
| 410 |
case VGA_GFX_I:
|
| 411 |
val = s->gr_index; |
| 412 |
break;
|
| 413 |
case VGA_GFX_D:
|
| 414 |
val = s->gr[s->gr_index]; |
| 415 |
#ifdef DEBUG_VGA_REG
|
| 416 |
printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
|
| 417 |
#endif
|
| 418 |
break;
|
| 419 |
case VGA_CRT_IM:
|
| 420 |
case VGA_CRT_IC:
|
| 421 |
val = s->cr_index; |
| 422 |
break;
|
| 423 |
case VGA_CRT_DM:
|
| 424 |
case VGA_CRT_DC:
|
| 425 |
val = s->cr[s->cr_index]; |
| 426 |
#ifdef DEBUG_VGA_REG
|
| 427 |
printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
|
| 428 |
#endif
|
| 429 |
break;
|
| 430 |
case VGA_IS1_RM:
|
| 431 |
case VGA_IS1_RC:
|
| 432 |
/* just toggle to fool polling */
|
| 433 |
val = s->st01 = s->retrace(s); |
| 434 |
s->ar_flip_flop = 0;
|
| 435 |
break;
|
| 436 |
default:
|
| 437 |
val = 0x00;
|
| 438 |
break;
|
| 439 |
} |
| 440 |
} |
| 441 |
#if defined(DEBUG_VGA)
|
| 442 |
printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
|
| 443 |
#endif
|
| 444 |
return val;
|
| 445 |
} |
| 446 |
|
| 447 |
void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
| 448 |
{
|
| 449 |
VGACommonState *s = opaque; |
| 450 |
int index;
|
| 451 |
|
| 452 |
/* check port range access depending on color/monochrome mode */
|
| 453 |
if (vga_ioport_invalid(s, addr)) {
|
| 454 |
return;
|
| 455 |
} |
| 456 |
#ifdef DEBUG_VGA
|
| 457 |
printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
|
| 458 |
#endif
|
| 459 |
|
| 460 |
switch(addr) {
|
| 461 |
case VGA_ATT_W:
|
| 462 |
if (s->ar_flip_flop == 0) { |
| 463 |
val &= 0x3f;
|
| 464 |
s->ar_index = val; |
| 465 |
} else {
|
| 466 |
index = s->ar_index & 0x1f;
|
| 467 |
switch(index) {
|
| 468 |
case VGA_ATC_PALETTE0 ... VGA_ATC_PALETTEF:
|
| 469 |
s->ar[index] = val & 0x3f;
|
| 470 |
break;
|
| 471 |
case VGA_ATC_MODE:
|
| 472 |
s->ar[index] = val & ~0x10;
|
| 473 |
break;
|
| 474 |
case VGA_ATC_OVERSCAN:
|
| 475 |
s->ar[index] = val; |
| 476 |
break;
|
| 477 |
case VGA_ATC_PLANE_ENABLE:
|
| 478 |
s->ar[index] = val & ~0xc0;
|
| 479 |
break;
|
| 480 |
case VGA_ATC_PEL:
|
| 481 |
s->ar[index] = val & ~0xf0;
|
| 482 |
break;
|
| 483 |
case VGA_ATC_COLOR_PAGE:
|
| 484 |
s->ar[index] = val & ~0xf0;
|
| 485 |
break;
|
| 486 |
default:
|
| 487 |
break;
|
| 488 |
} |
| 489 |
} |
| 490 |
s->ar_flip_flop ^= 1;
|
| 491 |
break;
|
| 492 |
case VGA_MIS_W:
|
| 493 |
s->msr = val & ~0x10;
|
| 494 |
s->update_retrace_info(s); |
| 495 |
break;
|
| 496 |
case VGA_SEQ_I:
|
| 497 |
s->sr_index = val & 7;
|
| 498 |
break;
|
| 499 |
case VGA_SEQ_D:
|
| 500 |
#ifdef DEBUG_VGA_REG
|
| 501 |
printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
|
| 502 |
#endif
|
| 503 |
s->sr[s->sr_index] = val & sr_mask[s->sr_index]; |
| 504 |
if (s->sr_index == VGA_SEQ_CLOCK_MODE) {
|
| 505 |
s->update_retrace_info(s); |
| 506 |
} |
| 507 |
vga_update_memory_access(s); |
| 508 |
break;
|
| 509 |
case VGA_PEL_IR:
|
| 510 |
s->dac_read_index = val; |
| 511 |
s->dac_sub_index = 0;
|
| 512 |
s->dac_state = 3;
|
| 513 |
break;
|
| 514 |
case VGA_PEL_IW:
|
| 515 |
s->dac_write_index = val; |
| 516 |
s->dac_sub_index = 0;
|
| 517 |
s->dac_state = 0;
|
| 518 |
break;
|
| 519 |
case VGA_PEL_D:
|
| 520 |
s->dac_cache[s->dac_sub_index] = val; |
| 521 |
if (++s->dac_sub_index == 3) { |
| 522 |
memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3); |
| 523 |
s->dac_sub_index = 0;
|
| 524 |
s->dac_write_index++; |
| 525 |
} |
| 526 |
break;
|
| 527 |
case VGA_GFX_I:
|
| 528 |
s->gr_index = val & 0x0f;
|
| 529 |
break;
|
| 530 |
case VGA_GFX_D:
|
| 531 |
#ifdef DEBUG_VGA_REG
|
| 532 |
printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
|
| 533 |
#endif
|
| 534 |
s->gr[s->gr_index] = val & gr_mask[s->gr_index]; |
| 535 |
vga_update_memory_access(s); |
| 536 |
break;
|
| 537 |
case VGA_CRT_IM:
|
| 538 |
case VGA_CRT_IC:
|
| 539 |
s->cr_index = val; |
| 540 |
break;
|
| 541 |
case VGA_CRT_DM:
|
| 542 |
case VGA_CRT_DC:
|
| 543 |
#ifdef DEBUG_VGA_REG
|
| 544 |
printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
|
| 545 |
#endif
|
| 546 |
/* handle CR0-7 protection */
|
| 547 |
if ((s->cr[VGA_CRTC_V_SYNC_END] & VGA_CR11_LOCK_CR0_CR7) &&
|
| 548 |
s->cr_index <= VGA_CRTC_OVERFLOW) {
|
| 549 |
/* can always write bit 4 of CR7 */
|
| 550 |
if (s->cr_index == VGA_CRTC_OVERFLOW) {
|
| 551 |
s->cr[VGA_CRTC_OVERFLOW] = (s->cr[VGA_CRTC_OVERFLOW] & ~0x10) |
|
| 552 |
(val & 0x10);
|
| 553 |
} |
| 554 |
return;
|
| 555 |
} |
| 556 |
s->cr[s->cr_index] = val; |
| 557 |
|
| 558 |
switch(s->cr_index) {
|
| 559 |
case VGA_CRTC_H_TOTAL:
|
| 560 |
case VGA_CRTC_H_SYNC_START:
|
| 561 |
case VGA_CRTC_H_SYNC_END:
|
| 562 |
case VGA_CRTC_V_TOTAL:
|
| 563 |
case VGA_CRTC_OVERFLOW:
|
| 564 |
case VGA_CRTC_V_SYNC_END:
|
| 565 |
case VGA_CRTC_MODE:
|
| 566 |
s->update_retrace_info(s); |
| 567 |
break;
|
| 568 |
} |
| 569 |
break;
|
| 570 |
case VGA_IS1_RM:
|
| 571 |
case VGA_IS1_RC:
|
| 572 |
s->fcr = val & 0x10;
|
| 573 |
break;
|
| 574 |
} |
| 575 |
} |
| 576 |
|
| 577 |
#ifdef CONFIG_BOCHS_VBE
|
| 578 |
static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr) |
| 579 |
{
|
| 580 |
VGACommonState *s = opaque; |
| 581 |
uint32_t val; |
| 582 |
val = s->vbe_index; |
| 583 |
return val;
|
| 584 |
} |
| 585 |
|
| 586 |
static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr) |
| 587 |
{
|
| 588 |
VGACommonState *s = opaque; |
| 589 |
uint32_t val; |
| 590 |
|
| 591 |
if (s->vbe_index < VBE_DISPI_INDEX_NB) {
|
| 592 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
|
| 593 |
switch(s->vbe_index) {
|
| 594 |
/* XXX: do not hardcode ? */
|
| 595 |
case VBE_DISPI_INDEX_XRES:
|
| 596 |
val = VBE_DISPI_MAX_XRES; |
| 597 |
break;
|
| 598 |
case VBE_DISPI_INDEX_YRES:
|
| 599 |
val = VBE_DISPI_MAX_YRES; |
| 600 |
break;
|
| 601 |
case VBE_DISPI_INDEX_BPP:
|
| 602 |
val = VBE_DISPI_MAX_BPP; |
| 603 |
break;
|
| 604 |
default:
|
| 605 |
val = s->vbe_regs[s->vbe_index]; |
| 606 |
break;
|
| 607 |
} |
| 608 |
} else {
|
| 609 |
val = s->vbe_regs[s->vbe_index]; |
| 610 |
} |
| 611 |
} else if (s->vbe_index == VBE_DISPI_INDEX_VIDEO_MEMORY_64K) { |
| 612 |
val = s->vram_size / (64 * 1024); |
| 613 |
} else {
|
| 614 |
val = 0;
|
| 615 |
} |
| 616 |
#ifdef DEBUG_BOCHS_VBE
|
| 617 |
printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
|
| 618 |
#endif
|
| 619 |
return val;
|
| 620 |
} |
| 621 |
|
| 622 |
static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val) |
| 623 |
{
|
| 624 |
VGACommonState *s = opaque; |
| 625 |
s->vbe_index = val; |
| 626 |
} |
| 627 |
|
| 628 |
static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) |
| 629 |
{
|
| 630 |
VGACommonState *s = opaque; |
| 631 |
|
| 632 |
if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
|
| 633 |
#ifdef DEBUG_BOCHS_VBE
|
| 634 |
printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
|
| 635 |
#endif
|
| 636 |
switch(s->vbe_index) {
|
| 637 |
case VBE_DISPI_INDEX_ID:
|
| 638 |
if (val == VBE_DISPI_ID0 ||
|
| 639 |
val == VBE_DISPI_ID1 || |
| 640 |
val == VBE_DISPI_ID2 || |
| 641 |
val == VBE_DISPI_ID3 || |
| 642 |
val == VBE_DISPI_ID4) {
|
| 643 |
s->vbe_regs[s->vbe_index] = val; |
| 644 |
} |
| 645 |
break;
|
| 646 |
case VBE_DISPI_INDEX_XRES:
|
| 647 |
if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) { |
| 648 |
s->vbe_regs[s->vbe_index] = val; |
| 649 |
} |
| 650 |
break;
|
| 651 |
case VBE_DISPI_INDEX_YRES:
|
| 652 |
if (val <= VBE_DISPI_MAX_YRES) {
|
| 653 |
s->vbe_regs[s->vbe_index] = val; |
| 654 |
} |
| 655 |
break;
|
| 656 |
case VBE_DISPI_INDEX_BPP:
|
| 657 |
if (val == 0) |
| 658 |
val = 8;
|
| 659 |
if (val == 4 || val == 8 || val == 15 || |
| 660 |
val == 16 || val == 24 || val == 32) { |
| 661 |
s->vbe_regs[s->vbe_index] = val; |
| 662 |
} |
| 663 |
break;
|
| 664 |
case VBE_DISPI_INDEX_BANK:
|
| 665 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { |
| 666 |
val &= (s->vbe_bank_mask >> 2);
|
| 667 |
} else {
|
| 668 |
val &= s->vbe_bank_mask; |
| 669 |
} |
| 670 |
s->vbe_regs[s->vbe_index] = val; |
| 671 |
s->bank_offset = (val << 16);
|
| 672 |
vga_update_memory_access(s); |
| 673 |
break;
|
| 674 |
case VBE_DISPI_INDEX_ENABLE:
|
| 675 |
if ((val & VBE_DISPI_ENABLED) &&
|
| 676 |
!(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) {
|
| 677 |
int h, shift_control;
|
| 678 |
|
| 679 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = |
| 680 |
s->vbe_regs[VBE_DISPI_INDEX_XRES]; |
| 681 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = |
| 682 |
s->vbe_regs[VBE_DISPI_INDEX_YRES]; |
| 683 |
s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
|
| 684 |
s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
|
| 685 |
|
| 686 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
| 687 |
s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
|
| 688 |
else
|
| 689 |
s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] * |
| 690 |
((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
| 691 |
s->vbe_start_addr = 0;
|
| 692 |
|
| 693 |
/* clear the screen (should be done in BIOS) */
|
| 694 |
if (!(val & VBE_DISPI_NOCLEARMEM)) {
|
| 695 |
memset(s->vram_ptr, 0,
|
| 696 |
s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset); |
| 697 |
} |
| 698 |
|
| 699 |
/* we initialize the VGA graphic mode (should be done
|
| 700 |
in BIOS) */
|
| 701 |
/* graphic mode + memory map 1 */
|
| 702 |
s->gr[VGA_GFX_MISC] = (s->gr[VGA_GFX_MISC] & ~0x0c) | 0x04 | |
| 703 |
VGA_GR06_GRAPHICS_MODE; |
| 704 |
s->cr[VGA_CRTC_MODE] |= 3; /* no CGA modes */ |
| 705 |
s->cr[VGA_CRTC_OFFSET] = s->vbe_line_offset >> 3;
|
| 706 |
/* width */
|
| 707 |
s->cr[VGA_CRTC_H_DISP] = |
| 708 |
(s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1; |
| 709 |
/* height (only meaningful if < 1024) */
|
| 710 |
h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
|
| 711 |
s->cr[VGA_CRTC_V_DISP_END] = h; |
| 712 |
s->cr[VGA_CRTC_OVERFLOW] = (s->cr[VGA_CRTC_OVERFLOW] & ~0x42) |
|
| 713 |
((h >> 7) & 0x02) | ((h >> 3) & 0x40); |
| 714 |
/* line compare to 1023 */
|
| 715 |
s->cr[VGA_CRTC_LINE_COMPARE] = 0xff;
|
| 716 |
s->cr[VGA_CRTC_OVERFLOW] |= 0x10;
|
| 717 |
s->cr[VGA_CRTC_MAX_SCAN] |= 0x40;
|
| 718 |
|
| 719 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { |
| 720 |
shift_control = 0;
|
| 721 |
s->sr[VGA_SEQ_CLOCK_MODE] &= ~8; /* no double line */ |
| 722 |
} else {
|
| 723 |
shift_control = 2;
|
| 724 |
/* set chain 4 mode */
|
| 725 |
s->sr[VGA_SEQ_MEMORY_MODE] |= VGA_SR04_CHN_4M; |
| 726 |
/* activate all planes */
|
| 727 |
s->sr[VGA_SEQ_PLANE_WRITE] |= VGA_SR02_ALL_PLANES; |
| 728 |
} |
| 729 |
s->gr[VGA_GFX_MODE] = (s->gr[VGA_GFX_MODE] & ~0x60) |
|
| 730 |
(shift_control << 5);
|
| 731 |
s->cr[VGA_CRTC_MAX_SCAN] &= ~0x9f; /* no double scan */ |
| 732 |
} else {
|
| 733 |
/* XXX: the bios should do that */
|
| 734 |
s->bank_offset = 0;
|
| 735 |
} |
| 736 |
s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0;
|
| 737 |
s->vbe_regs[s->vbe_index] = val; |
| 738 |
vga_update_memory_access(s); |
| 739 |
break;
|
| 740 |
case VBE_DISPI_INDEX_VIRT_WIDTH:
|
| 741 |
{
|
| 742 |
int w, h, line_offset;
|
| 743 |
|
| 744 |
if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
|
| 745 |
return;
|
| 746 |
w = val; |
| 747 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
| 748 |
line_offset = w >> 1;
|
| 749 |
else
|
| 750 |
line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
| 751 |
h = s->vram_size / line_offset; |
| 752 |
/* XXX: support weird bochs semantics ? */
|
| 753 |
if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
|
| 754 |
return;
|
| 755 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w; |
| 756 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h; |
| 757 |
s->vbe_line_offset = line_offset; |
| 758 |
} |
| 759 |
break;
|
| 760 |
case VBE_DISPI_INDEX_X_OFFSET:
|
| 761 |
case VBE_DISPI_INDEX_Y_OFFSET:
|
| 762 |
{
|
| 763 |
int x;
|
| 764 |
s->vbe_regs[s->vbe_index] = val; |
| 765 |
s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET]; |
| 766 |
x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET]; |
| 767 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
| 768 |
s->vbe_start_addr += x >> 1;
|
| 769 |
else
|
| 770 |
s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
| 771 |
s->vbe_start_addr >>= 2;
|
| 772 |
} |
| 773 |
break;
|
| 774 |
default:
|
| 775 |
break;
|
| 776 |
} |
| 777 |
} |
| 778 |
} |
| 779 |
#endif
|
| 780 |
|
| 781 |
/* called for accesses between 0xa0000 and 0xc0000 */
|
| 782 |
uint32_t vga_mem_readb(VGACommonState *s, target_phys_addr_t addr) |
| 783 |
{
|
| 784 |
int memory_map_mode, plane;
|
| 785 |
uint32_t ret; |
| 786 |
|
| 787 |
/* convert to VGA memory offset */
|
| 788 |
memory_map_mode = (s->gr[VGA_GFX_MISC] >> 2) & 3; |
| 789 |
addr &= 0x1ffff;
|
| 790 |
switch(memory_map_mode) {
|
| 791 |
case 0: |
| 792 |
break;
|
| 793 |
case 1: |
| 794 |
if (addr >= 0x10000) |
| 795 |
return 0xff; |
| 796 |
addr += s->bank_offset; |
| 797 |
break;
|
| 798 |
case 2: |
| 799 |
addr -= 0x10000;
|
| 800 |
if (addr >= 0x8000) |
| 801 |
return 0xff; |
| 802 |
break;
|
| 803 |
default:
|
| 804 |
case 3: |
| 805 |
addr -= 0x18000;
|
| 806 |
if (addr >= 0x8000) |
| 807 |
return 0xff; |
| 808 |
break;
|
| 809 |
} |
| 810 |
|
| 811 |
if (s->sr[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) {
|
| 812 |
/* chain 4 mode : simplest access */
|
| 813 |
ret = s->vram_ptr[addr]; |
| 814 |
} else if (s->gr[VGA_GFX_MODE] & 0x10) { |
| 815 |
/* odd/even mode (aka text mode mapping) */
|
| 816 |
plane = (s->gr[VGA_GFX_PLANE_READ] & 2) | (addr & 1); |
| 817 |
ret = s->vram_ptr[((addr & ~1) << 1) | plane]; |
| 818 |
} else {
|
| 819 |
/* standard VGA latched access */
|
| 820 |
s->latch = ((uint32_t *)s->vram_ptr)[addr]; |
| 821 |
|
| 822 |
if (!(s->gr[VGA_GFX_MODE] & 0x08)) { |
| 823 |
/* read mode 0 */
|
| 824 |
plane = s->gr[VGA_GFX_PLANE_READ]; |
| 825 |
ret = GET_PLANE(s->latch, plane); |
| 826 |
} else {
|
| 827 |
/* read mode 1 */
|
| 828 |
ret = (s->latch ^ mask16[s->gr[VGA_GFX_COMPARE_VALUE]]) & |
| 829 |
mask16[s->gr[VGA_GFX_COMPARE_MASK]]; |
| 830 |
ret |= ret >> 16;
|
| 831 |
ret |= ret >> 8;
|
| 832 |
ret = (~ret) & 0xff;
|
| 833 |
} |
| 834 |
} |
| 835 |
return ret;
|
| 836 |
} |
| 837 |
|
| 838 |
/* called for accesses between 0xa0000 and 0xc0000 */
|
| 839 |
void vga_mem_writeb(VGACommonState *s, target_phys_addr_t addr, uint32_t val)
|
| 840 |
{
|
| 841 |
int memory_map_mode, plane, write_mode, b, func_select, mask;
|
| 842 |
uint32_t write_mask, bit_mask, set_mask; |
| 843 |
|
| 844 |
#ifdef DEBUG_VGA_MEM
|
| 845 |
printf("vga: [0x" TARGET_FMT_plx "] = 0x%02x\n", addr, val); |
| 846 |
#endif
|
| 847 |
/* convert to VGA memory offset */
|
| 848 |
memory_map_mode = (s->gr[VGA_GFX_MISC] >> 2) & 3; |
| 849 |
addr &= 0x1ffff;
|
| 850 |
switch(memory_map_mode) {
|
| 851 |
case 0: |
| 852 |
break;
|
| 853 |
case 1: |
| 854 |
if (addr >= 0x10000) |
| 855 |
return;
|
| 856 |
addr += s->bank_offset; |
| 857 |
break;
|
| 858 |
case 2: |
| 859 |
addr -= 0x10000;
|
| 860 |
if (addr >= 0x8000) |
| 861 |
return;
|
| 862 |
break;
|
| 863 |
default:
|
| 864 |
case 3: |
| 865 |
addr -= 0x18000;
|
| 866 |
if (addr >= 0x8000) |
| 867 |
return;
|
| 868 |
break;
|
| 869 |
} |
| 870 |
|
| 871 |
if (s->sr[VGA_SEQ_MEMORY_MODE] & VGA_SR04_CHN_4M) {
|
| 872 |
/* chain 4 mode : simplest access */
|
| 873 |
plane = addr & 3;
|
| 874 |
mask = (1 << plane);
|
| 875 |
if (s->sr[VGA_SEQ_PLANE_WRITE] & mask) {
|
| 876 |
s->vram_ptr[addr] = val; |
| 877 |
#ifdef DEBUG_VGA_MEM
|
| 878 |
printf("vga: chain4: [0x" TARGET_FMT_plx "]\n", addr); |
| 879 |
#endif
|
| 880 |
s->plane_updated |= mask; /* only used to detect font change */
|
| 881 |
memory_region_set_dirty(&s->vram, addr, 1);
|
| 882 |
} |
| 883 |
} else if (s->gr[VGA_GFX_MODE] & 0x10) { |
| 884 |
/* odd/even mode (aka text mode mapping) */
|
| 885 |
plane = (s->gr[VGA_GFX_PLANE_READ] & 2) | (addr & 1); |
| 886 |
mask = (1 << plane);
|
| 887 |
if (s->sr[VGA_SEQ_PLANE_WRITE] & mask) {
|
| 888 |
addr = ((addr & ~1) << 1) | plane; |
| 889 |
s->vram_ptr[addr] = val; |
| 890 |
#ifdef DEBUG_VGA_MEM
|
| 891 |
printf("vga: odd/even: [0x" TARGET_FMT_plx "]\n", addr); |
| 892 |
#endif
|
| 893 |
s->plane_updated |= mask; /* only used to detect font change */
|
| 894 |
memory_region_set_dirty(&s->vram, addr, 1);
|
| 895 |
} |
| 896 |
} else {
|
| 897 |
/* standard VGA latched access */
|
| 898 |
write_mode = s->gr[VGA_GFX_MODE] & 3;
|
| 899 |
switch(write_mode) {
|
| 900 |
default:
|
| 901 |
case 0: |
| 902 |
/* rotate */
|
| 903 |
b = s->gr[VGA_GFX_DATA_ROTATE] & 7;
|
| 904 |
val = ((val >> b) | (val << (8 - b))) & 0xff; |
| 905 |
val |= val << 8;
|
| 906 |
val |= val << 16;
|
| 907 |
|
| 908 |
/* apply set/reset mask */
|
| 909 |
set_mask = mask16[s->gr[VGA_GFX_SR_ENABLE]]; |
| 910 |
val = (val & ~set_mask) | |
| 911 |
(mask16[s->gr[VGA_GFX_SR_VALUE]] & set_mask); |
| 912 |
bit_mask = s->gr[VGA_GFX_BIT_MASK]; |
| 913 |
break;
|
| 914 |
case 1: |
| 915 |
val = s->latch; |
| 916 |
goto do_write;
|
| 917 |
case 2: |
| 918 |
val = mask16[val & 0x0f];
|
| 919 |
bit_mask = s->gr[VGA_GFX_BIT_MASK]; |
| 920 |
break;
|
| 921 |
case 3: |
| 922 |
/* rotate */
|
| 923 |
b = s->gr[VGA_GFX_DATA_ROTATE] & 7;
|
| 924 |
val = (val >> b) | (val << (8 - b));
|
| 925 |
|
| 926 |
bit_mask = s->gr[VGA_GFX_BIT_MASK] & val; |
| 927 |
val = mask16[s->gr[VGA_GFX_SR_VALUE]]; |
| 928 |
break;
|
| 929 |
} |
| 930 |
|
| 931 |
/* apply logical operation */
|
| 932 |
func_select = s->gr[VGA_GFX_DATA_ROTATE] >> 3;
|
| 933 |
switch(func_select) {
|
| 934 |
case 0: |
| 935 |
default:
|
| 936 |
/* nothing to do */
|
| 937 |
break;
|
| 938 |
case 1: |
| 939 |
/* and */
|
| 940 |
val &= s->latch; |
| 941 |
break;
|
| 942 |
case 2: |
| 943 |
/* or */
|
| 944 |
val |= s->latch; |
| 945 |
break;
|
| 946 |
case 3: |
| 947 |
/* xor */
|
| 948 |
val ^= s->latch; |
| 949 |
break;
|
| 950 |
} |
| 951 |
|
| 952 |
/* apply bit mask */
|
| 953 |
bit_mask |= bit_mask << 8;
|
| 954 |
bit_mask |= bit_mask << 16;
|
| 955 |
val = (val & bit_mask) | (s->latch & ~bit_mask); |
| 956 |
|
| 957 |
do_write:
|
| 958 |
/* mask data according to sr[2] */
|
| 959 |
mask = s->sr[VGA_SEQ_PLANE_WRITE]; |
| 960 |
s->plane_updated |= mask; /* only used to detect font change */
|
| 961 |
write_mask = mask16[mask]; |
| 962 |
((uint32_t *)s->vram_ptr)[addr] = |
| 963 |
(((uint32_t *)s->vram_ptr)[addr] & ~write_mask) | |
| 964 |
(val & write_mask); |
| 965 |
#ifdef DEBUG_VGA_MEM
|
| 966 |
printf("vga: latch: [0x" TARGET_FMT_plx "] mask=0x%08x val=0x%08x\n", |
| 967 |
addr * 4, write_mask, val);
|
| 968 |
#endif
|
| 969 |
memory_region_set_dirty(&s->vram, addr << 2, sizeof(uint32_t)); |
| 970 |
} |
| 971 |
} |
| 972 |
|
| 973 |
typedef void vga_draw_glyph8_func(uint8_t *d, int linesize, |
| 974 |
const uint8_t *font_ptr, int h, |
| 975 |
uint32_t fgcol, uint32_t bgcol); |
| 976 |
typedef void vga_draw_glyph9_func(uint8_t *d, int linesize, |
| 977 |
const uint8_t *font_ptr, int h, |
| 978 |
uint32_t fgcol, uint32_t bgcol, int dup9);
|
| 979 |
typedef void vga_draw_line_func(VGACommonState *s1, uint8_t *d, |
| 980 |
const uint8_t *s, int width); |
| 981 |
|
| 982 |
#define DEPTH 8 |
| 983 |
#include "vga_template.h" |
| 984 |
|
| 985 |
#define DEPTH 15 |
| 986 |
#include "vga_template.h" |
| 987 |
|
| 988 |
#define BGR_FORMAT
|
| 989 |
#define DEPTH 15 |
| 990 |
#include "vga_template.h" |
| 991 |
|
| 992 |
#define DEPTH 16 |
| 993 |
#include "vga_template.h" |
| 994 |
|
| 995 |
#define BGR_FORMAT
|
| 996 |
#define DEPTH 16 |
| 997 |
#include "vga_template.h" |
| 998 |
|
| 999 |
#define DEPTH 32 |
| 1000 |
#include "vga_template.h" |
| 1001 |
|
| 1002 |
#define BGR_FORMAT
|
| 1003 |
#define DEPTH 32 |
| 1004 |
#include "vga_template.h" |
| 1005 |
|
| 1006 |
static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b) |
| 1007 |
{
|
| 1008 |
unsigned int col; |
| 1009 |
col = rgb_to_pixel8(r, g, b); |
| 1010 |
col |= col << 8;
|
| 1011 |
col |= col << 16;
|
| 1012 |
return col;
|
| 1013 |
} |
| 1014 |
|
| 1015 |
static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b) |
| 1016 |
{
|
| 1017 |
unsigned int col; |
| 1018 |
col = rgb_to_pixel15(r, g, b); |
| 1019 |
col |= col << 16;
|
| 1020 |
return col;
|
| 1021 |
} |
| 1022 |
|
| 1023 |
static unsigned int rgb_to_pixel15bgr_dup(unsigned int r, unsigned int g, |
| 1024 |
unsigned int b) |
| 1025 |
{
|
| 1026 |
unsigned int col; |
| 1027 |
col = rgb_to_pixel15bgr(r, g, b); |
| 1028 |
col |= col << 16;
|
| 1029 |
return col;
|
| 1030 |
} |
| 1031 |
|
| 1032 |
static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b) |
| 1033 |
{
|
| 1034 |
unsigned int col; |
| 1035 |
col = rgb_to_pixel16(r, g, b); |
| 1036 |
col |= col << 16;
|
| 1037 |
return col;
|
| 1038 |
} |
| 1039 |
|
| 1040 |
static unsigned int rgb_to_pixel16bgr_dup(unsigned int r, unsigned int g, |
| 1041 |
unsigned int b) |
| 1042 |
{
|
| 1043 |
unsigned int col; |
| 1044 |
col = rgb_to_pixel16bgr(r, g, b); |
| 1045 |
col |= col << 16;
|
| 1046 |
return col;
|
| 1047 |
} |
| 1048 |
|
| 1049 |
static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b) |
| 1050 |
{
|
| 1051 |
unsigned int col; |
| 1052 |
col = rgb_to_pixel32(r, g, b); |
| 1053 |
return col;
|
| 1054 |
} |
| 1055 |
|
| 1056 |
static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b) |
| 1057 |
{
|
| 1058 |
unsigned int col; |
| 1059 |
col = rgb_to_pixel32bgr(r, g, b); |
| 1060 |
return col;
|
| 1061 |
} |
| 1062 |
|
| 1063 |
/* return true if the palette was modified */
|
| 1064 |
static int update_palette16(VGACommonState *s) |
| 1065 |
{
|
| 1066 |
int full_update, i;
|
| 1067 |
uint32_t v, col, *palette; |
| 1068 |
|
| 1069 |
full_update = 0;
|
| 1070 |
palette = s->last_palette; |
| 1071 |
for(i = 0; i < 16; i++) { |
| 1072 |
v = s->ar[i]; |
| 1073 |
if (s->ar[VGA_ATC_MODE] & 0x80) { |
| 1074 |
v = ((s->ar[VGA_ATC_COLOR_PAGE] & 0xf) << 4) | (v & 0xf); |
| 1075 |
} else {
|
| 1076 |
v = ((s->ar[VGA_ATC_COLOR_PAGE] & 0xc) << 4) | (v & 0x3f); |
| 1077 |
} |
| 1078 |
v = v * 3;
|
| 1079 |
col = s->rgb_to_pixel(c6_to_8(s->palette[v]), |
| 1080 |
c6_to_8(s->palette[v + 1]),
|
| 1081 |
c6_to_8(s->palette[v + 2]));
|
| 1082 |
if (col != palette[i]) {
|
| 1083 |
full_update = 1;
|
| 1084 |
palette[i] = col; |
| 1085 |
} |
| 1086 |
} |
| 1087 |
return full_update;
|
| 1088 |
} |
| 1089 |
|
| 1090 |
/* return true if the palette was modified */
|
| 1091 |
static int update_palette256(VGACommonState *s) |
| 1092 |
{
|
| 1093 |
int full_update, i;
|
| 1094 |
uint32_t v, col, *palette; |
| 1095 |
|
| 1096 |
full_update = 0;
|
| 1097 |
palette = s->last_palette; |
| 1098 |
v = 0;
|
| 1099 |
for(i = 0; i < 256; i++) { |
| 1100 |
if (s->dac_8bit) {
|
| 1101 |
col = s->rgb_to_pixel(s->palette[v], |
| 1102 |
s->palette[v + 1],
|
| 1103 |
s->palette[v + 2]);
|
| 1104 |
} else {
|
| 1105 |
col = s->rgb_to_pixel(c6_to_8(s->palette[v]), |
| 1106 |
c6_to_8(s->palette[v + 1]),
|
| 1107 |
c6_to_8(s->palette[v + 2]));
|
| 1108 |
} |
| 1109 |
if (col != palette[i]) {
|
| 1110 |
full_update = 1;
|
| 1111 |
palette[i] = col; |
| 1112 |
} |
| 1113 |
v += 3;
|
| 1114 |
} |
| 1115 |
return full_update;
|
| 1116 |
} |
| 1117 |
|
| 1118 |
static void vga_get_offsets(VGACommonState *s, |
| 1119 |
uint32_t *pline_offset, |
| 1120 |
uint32_t *pstart_addr, |
| 1121 |
uint32_t *pline_compare) |
| 1122 |
{
|
| 1123 |
uint32_t start_addr, line_offset, line_compare; |
| 1124 |
#ifdef CONFIG_BOCHS_VBE
|
| 1125 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
| 1126 |
line_offset = s->vbe_line_offset; |
| 1127 |
start_addr = s->vbe_start_addr; |
| 1128 |
line_compare = 65535;
|
| 1129 |
} else
|
| 1130 |
#endif
|
| 1131 |
{
|
| 1132 |
/* compute line_offset in bytes */
|
| 1133 |
line_offset = s->cr[VGA_CRTC_OFFSET]; |
| 1134 |
line_offset <<= 3;
|
| 1135 |
|
| 1136 |
/* starting address */
|
| 1137 |
start_addr = s->cr[VGA_CRTC_START_LO] | |
| 1138 |
(s->cr[VGA_CRTC_START_HI] << 8);
|
| 1139 |
|
| 1140 |
/* line compare */
|
| 1141 |
line_compare = s->cr[VGA_CRTC_LINE_COMPARE] | |
| 1142 |
((s->cr[VGA_CRTC_OVERFLOW] & 0x10) << 4) | |
| 1143 |
((s->cr[VGA_CRTC_MAX_SCAN] & 0x40) << 3); |
| 1144 |
} |
| 1145 |
*pline_offset = line_offset; |
| 1146 |
*pstart_addr = start_addr; |
| 1147 |
*pline_compare = line_compare; |
| 1148 |
} |
| 1149 |
|
| 1150 |
/* update start_addr and line_offset. Return TRUE if modified */
|
| 1151 |
static int update_basic_params(VGACommonState *s) |
| 1152 |
{
|
| 1153 |
int full_update;
|
| 1154 |
uint32_t start_addr, line_offset, line_compare; |
| 1155 |
|
| 1156 |
full_update = 0;
|
| 1157 |
|
| 1158 |
s->get_offsets(s, &line_offset, &start_addr, &line_compare); |
| 1159 |
|
| 1160 |
if (line_offset != s->line_offset ||
|
| 1161 |
start_addr != s->start_addr || |
| 1162 |
line_compare != s->line_compare) {
|
| 1163 |
s->line_offset = line_offset; |
| 1164 |
s->start_addr = start_addr; |
| 1165 |
s->line_compare = line_compare; |
| 1166 |
full_update = 1;
|
| 1167 |
} |
| 1168 |
return full_update;
|
| 1169 |
} |
| 1170 |
|
| 1171 |
#define NB_DEPTHS 7 |
| 1172 |
|
| 1173 |
static inline int get_depth_index(DisplayState *s) |
| 1174 |
{
|
| 1175 |
switch(ds_get_bits_per_pixel(s)) {
|
| 1176 |
default:
|
| 1177 |
case 8: |
| 1178 |
return 0; |
| 1179 |
case 15: |
| 1180 |
return 1; |
| 1181 |
case 16: |
| 1182 |
return 2; |
| 1183 |
case 32: |
| 1184 |
if (is_surface_bgr(s->surface))
|
| 1185 |
return 4; |
| 1186 |
else
|
| 1187 |
return 3; |
| 1188 |
} |
| 1189 |
} |
| 1190 |
|
| 1191 |
static vga_draw_glyph8_func * const vga_draw_glyph8_table[NB_DEPTHS] = { |
| 1192 |
vga_draw_glyph8_8, |
| 1193 |
vga_draw_glyph8_16, |
| 1194 |
vga_draw_glyph8_16, |
| 1195 |
vga_draw_glyph8_32, |
| 1196 |
vga_draw_glyph8_32, |
| 1197 |
vga_draw_glyph8_16, |
| 1198 |
vga_draw_glyph8_16, |
| 1199 |
}; |
| 1200 |
|
| 1201 |
static vga_draw_glyph8_func * const vga_draw_glyph16_table[NB_DEPTHS] = { |
| 1202 |
vga_draw_glyph16_8, |
| 1203 |
vga_draw_glyph16_16, |
| 1204 |
vga_draw_glyph16_16, |
| 1205 |
vga_draw_glyph16_32, |
| 1206 |
vga_draw_glyph16_32, |
| 1207 |
vga_draw_glyph16_16, |
| 1208 |
vga_draw_glyph16_16, |
| 1209 |
}; |
| 1210 |
|
| 1211 |
static vga_draw_glyph9_func * const vga_draw_glyph9_table[NB_DEPTHS] = { |
| 1212 |
vga_draw_glyph9_8, |
| 1213 |
vga_draw_glyph9_16, |
| 1214 |
vga_draw_glyph9_16, |
| 1215 |
vga_draw_glyph9_32, |
| 1216 |
vga_draw_glyph9_32, |
| 1217 |
vga_draw_glyph9_16, |
| 1218 |
vga_draw_glyph9_16, |
| 1219 |
}; |
| 1220 |
|
| 1221 |
static const uint8_t cursor_glyph[32 * 4] = { |
| 1222 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1223 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1224 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1225 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1226 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1227 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1228 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1229 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1230 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1231 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1232 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1233 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1234 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1235 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1236 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1237 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1238 |
}; |
| 1239 |
|
| 1240 |
static void vga_get_text_resolution(VGACommonState *s, int *pwidth, int *pheight, |
| 1241 |
int *pcwidth, int *pcheight) |
| 1242 |
{
|
| 1243 |
int width, cwidth, height, cheight;
|
| 1244 |
|
| 1245 |
/* total width & height */
|
| 1246 |
cheight = (s->cr[VGA_CRTC_MAX_SCAN] & 0x1f) + 1; |
| 1247 |
cwidth = 8;
|
| 1248 |
if (!(s->sr[VGA_SEQ_CLOCK_MODE] & VGA_SR01_CHAR_CLK_8DOTS)) {
|
| 1249 |
cwidth = 9;
|
| 1250 |
} |
| 1251 |
if (s->sr[VGA_SEQ_CLOCK_MODE] & 0x08) { |
| 1252 |
cwidth = 16; /* NOTE: no 18 pixel wide */ |
| 1253 |
} |
| 1254 |
width = (s->cr[VGA_CRTC_H_DISP] + 1);
|
| 1255 |
if (s->cr[VGA_CRTC_V_TOTAL] == 100) { |
| 1256 |
/* ugly hack for CGA 160x100x16 - explain me the logic */
|
| 1257 |
height = 100;
|
| 1258 |
} else {
|
| 1259 |
height = s->cr[VGA_CRTC_V_DISP_END] | |
| 1260 |
((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) | |
| 1261 |
((s->cr[VGA_CRTC_OVERFLOW] & 0x40) << 3); |
| 1262 |
height = (height + 1) / cheight;
|
| 1263 |
} |
| 1264 |
|
| 1265 |
*pwidth = width; |
| 1266 |
*pheight = height; |
| 1267 |
*pcwidth = cwidth; |
| 1268 |
*pcheight = cheight; |
| 1269 |
} |
| 1270 |
|
| 1271 |
typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b); |
| 1272 |
|
| 1273 |
static rgb_to_pixel_dup_func * const rgb_to_pixel_dup_table[NB_DEPTHS] = { |
| 1274 |
rgb_to_pixel8_dup, |
| 1275 |
rgb_to_pixel15_dup, |
| 1276 |
rgb_to_pixel16_dup, |
| 1277 |
rgb_to_pixel32_dup, |
| 1278 |
rgb_to_pixel32bgr_dup, |
| 1279 |
rgb_to_pixel15bgr_dup, |
| 1280 |
rgb_to_pixel16bgr_dup, |
| 1281 |
}; |
| 1282 |
|
| 1283 |
/*
|
| 1284 |
* Text mode update
|
| 1285 |
* Missing:
|
| 1286 |
* - double scan
|
| 1287 |
* - double width
|
| 1288 |
* - underline
|
| 1289 |
* - flashing
|
| 1290 |
*/
|
| 1291 |
static void vga_draw_text(VGACommonState *s, int full_update) |
| 1292 |
{
|
| 1293 |
int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
|
| 1294 |
int cx_min, cx_max, linesize, x_incr, line, line1;
|
| 1295 |
uint32_t offset, fgcol, bgcol, v, cursor_offset; |
| 1296 |
uint8_t *d1, *d, *src, *dest, *cursor_ptr; |
| 1297 |
const uint8_t *font_ptr, *font_base[2]; |
| 1298 |
int dup9, line_offset, depth_index;
|
| 1299 |
uint32_t *palette; |
| 1300 |
uint32_t *ch_attr_ptr; |
| 1301 |
vga_draw_glyph8_func *vga_draw_glyph8; |
| 1302 |
vga_draw_glyph9_func *vga_draw_glyph9; |
| 1303 |
|
| 1304 |
/* compute font data address (in plane 2) */
|
| 1305 |
v = s->sr[VGA_SEQ_CHARACTER_MAP]; |
| 1306 |
offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2; |
| 1307 |
if (offset != s->font_offsets[0]) { |
| 1308 |
s->font_offsets[0] = offset;
|
| 1309 |
full_update = 1;
|
| 1310 |
} |
| 1311 |
font_base[0] = s->vram_ptr + offset;
|
| 1312 |
|
| 1313 |
offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2; |
| 1314 |
font_base[1] = s->vram_ptr + offset;
|
| 1315 |
if (offset != s->font_offsets[1]) { |
| 1316 |
s->font_offsets[1] = offset;
|
| 1317 |
full_update = 1;
|
| 1318 |
} |
| 1319 |
if (s->plane_updated & (1 << 2) || s->chain4_alias) { |
| 1320 |
/* if the plane 2 was modified since the last display, it
|
| 1321 |
indicates the font may have been modified */
|
| 1322 |
s->plane_updated = 0;
|
| 1323 |
full_update = 1;
|
| 1324 |
} |
| 1325 |
full_update |= update_basic_params(s); |
| 1326 |
|
| 1327 |
line_offset = s->line_offset; |
| 1328 |
|
| 1329 |
vga_get_text_resolution(s, &width, &height, &cw, &cheight); |
| 1330 |
if ((height * width) <= 1) { |
| 1331 |
/* better than nothing: exit if transient size is too small */
|
| 1332 |
return;
|
| 1333 |
} |
| 1334 |
if ((height * width) > CH_ATTR_SIZE) {
|
| 1335 |
/* better than nothing: exit if transient size is too big */
|
| 1336 |
return;
|
| 1337 |
} |
| 1338 |
|
| 1339 |
if (width != s->last_width || height != s->last_height ||
|
| 1340 |
cw != s->last_cw || cheight != s->last_ch || s->last_depth) {
|
| 1341 |
s->last_scr_width = width * cw; |
| 1342 |
s->last_scr_height = height * cheight; |
| 1343 |
qemu_console_resize(s->ds, s->last_scr_width, s->last_scr_height); |
| 1344 |
s->last_depth = 0;
|
| 1345 |
s->last_width = width; |
| 1346 |
s->last_height = height; |
| 1347 |
s->last_ch = cheight; |
| 1348 |
s->last_cw = cw; |
| 1349 |
full_update = 1;
|
| 1350 |
} |
| 1351 |
s->rgb_to_pixel = |
| 1352 |
rgb_to_pixel_dup_table[get_depth_index(s->ds)]; |
| 1353 |
full_update |= update_palette16(s); |
| 1354 |
palette = s->last_palette; |
| 1355 |
x_incr = cw * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3); |
| 1356 |
|
| 1357 |
cursor_offset = ((s->cr[VGA_CRTC_CURSOR_HI] << 8) |
|
| 1358 |
s->cr[VGA_CRTC_CURSOR_LO]) - s->start_addr; |
| 1359 |
if (cursor_offset != s->cursor_offset ||
|
| 1360 |
s->cr[VGA_CRTC_CURSOR_START] != s->cursor_start || |
| 1361 |
s->cr[VGA_CRTC_CURSOR_END] != s->cursor_end) {
|
| 1362 |
/* if the cursor position changed, we update the old and new
|
| 1363 |
chars */
|
| 1364 |
if (s->cursor_offset < CH_ATTR_SIZE)
|
| 1365 |
s->last_ch_attr[s->cursor_offset] = -1;
|
| 1366 |
if (cursor_offset < CH_ATTR_SIZE)
|
| 1367 |
s->last_ch_attr[cursor_offset] = -1;
|
| 1368 |
s->cursor_offset = cursor_offset; |
| 1369 |
s->cursor_start = s->cr[VGA_CRTC_CURSOR_START]; |
| 1370 |
s->cursor_end = s->cr[VGA_CRTC_CURSOR_END]; |
| 1371 |
} |
| 1372 |
cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
|
| 1373 |
|
| 1374 |
depth_index = get_depth_index(s->ds); |
| 1375 |
if (cw == 16) |
| 1376 |
vga_draw_glyph8 = vga_draw_glyph16_table[depth_index]; |
| 1377 |
else
|
| 1378 |
vga_draw_glyph8 = vga_draw_glyph8_table[depth_index]; |
| 1379 |
vga_draw_glyph9 = vga_draw_glyph9_table[depth_index]; |
| 1380 |
|
| 1381 |
dest = ds_get_data(s->ds); |
| 1382 |
linesize = ds_get_linesize(s->ds); |
| 1383 |
ch_attr_ptr = s->last_ch_attr; |
| 1384 |
line = 0;
|
| 1385 |
offset = s->start_addr * 4;
|
| 1386 |
for(cy = 0; cy < height; cy++) { |
| 1387 |
d1 = dest; |
| 1388 |
src = s->vram_ptr + offset; |
| 1389 |
cx_min = width; |
| 1390 |
cx_max = -1;
|
| 1391 |
for(cx = 0; cx < width; cx++) { |
| 1392 |
ch_attr = *(uint16_t *)src; |
| 1393 |
if (full_update || ch_attr != *ch_attr_ptr) {
|
| 1394 |
if (cx < cx_min)
|
| 1395 |
cx_min = cx; |
| 1396 |
if (cx > cx_max)
|
| 1397 |
cx_max = cx; |
| 1398 |
*ch_attr_ptr = ch_attr; |
| 1399 |
#ifdef HOST_WORDS_BIGENDIAN
|
| 1400 |
ch = ch_attr >> 8;
|
| 1401 |
cattr = ch_attr & 0xff;
|
| 1402 |
#else
|
| 1403 |
ch = ch_attr & 0xff;
|
| 1404 |
cattr = ch_attr >> 8;
|
| 1405 |
#endif
|
| 1406 |
font_ptr = font_base[(cattr >> 3) & 1]; |
| 1407 |
font_ptr += 32 * 4 * ch; |
| 1408 |
bgcol = palette[cattr >> 4];
|
| 1409 |
fgcol = palette[cattr & 0x0f];
|
| 1410 |
if (cw != 9) { |
| 1411 |
vga_draw_glyph8(d1, linesize, |
| 1412 |
font_ptr, cheight, fgcol, bgcol); |
| 1413 |
} else {
|
| 1414 |
dup9 = 0;
|
| 1415 |
if (ch >= 0xb0 && ch <= 0xdf && |
| 1416 |
(s->ar[VGA_ATC_MODE] & 0x04)) {
|
| 1417 |
dup9 = 1;
|
| 1418 |
} |
| 1419 |
vga_draw_glyph9(d1, linesize, |
| 1420 |
font_ptr, cheight, fgcol, bgcol, dup9); |
| 1421 |
} |
| 1422 |
if (src == cursor_ptr &&
|
| 1423 |
!(s->cr[VGA_CRTC_CURSOR_START] & 0x20)) {
|
| 1424 |
int line_start, line_last, h;
|
| 1425 |
/* draw the cursor */
|
| 1426 |
line_start = s->cr[VGA_CRTC_CURSOR_START] & 0x1f;
|
| 1427 |
line_last = s->cr[VGA_CRTC_CURSOR_END] & 0x1f;
|
| 1428 |
/* XXX: check that */
|
| 1429 |
if (line_last > cheight - 1) |
| 1430 |
line_last = cheight - 1;
|
| 1431 |
if (line_last >= line_start && line_start < cheight) {
|
| 1432 |
h = line_last - line_start + 1;
|
| 1433 |
d = d1 + linesize * line_start; |
| 1434 |
if (cw != 9) { |
| 1435 |
vga_draw_glyph8(d, linesize, |
| 1436 |
cursor_glyph, h, fgcol, bgcol); |
| 1437 |
} else {
|
| 1438 |
vga_draw_glyph9(d, linesize, |
| 1439 |
cursor_glyph, h, fgcol, bgcol, 1);
|
| 1440 |
} |
| 1441 |
} |
| 1442 |
} |
| 1443 |
} |
| 1444 |
d1 += x_incr; |
| 1445 |
src += 4;
|
| 1446 |
ch_attr_ptr++; |
| 1447 |
} |
| 1448 |
if (cx_max != -1) { |
| 1449 |
dpy_update(s->ds, cx_min * cw, cy * cheight, |
| 1450 |
(cx_max - cx_min + 1) * cw, cheight);
|
| 1451 |
} |
| 1452 |
dest += linesize * cheight; |
| 1453 |
line1 = line + cheight; |
| 1454 |
offset += line_offset; |
| 1455 |
if (line < s->line_compare && line1 >= s->line_compare) {
|
| 1456 |
offset = 0;
|
| 1457 |
} |
| 1458 |
line = line1; |
| 1459 |
} |
| 1460 |
} |
| 1461 |
|
| 1462 |
enum {
|
| 1463 |
VGA_DRAW_LINE2, |
| 1464 |
VGA_DRAW_LINE2D2, |
| 1465 |
VGA_DRAW_LINE4, |
| 1466 |
VGA_DRAW_LINE4D2, |
| 1467 |
VGA_DRAW_LINE8D2, |
| 1468 |
VGA_DRAW_LINE8, |
| 1469 |
VGA_DRAW_LINE15, |
| 1470 |
VGA_DRAW_LINE16, |
| 1471 |
VGA_DRAW_LINE24, |
| 1472 |
VGA_DRAW_LINE32, |
| 1473 |
VGA_DRAW_LINE_NB, |
| 1474 |
}; |
| 1475 |
|
| 1476 |
static vga_draw_line_func * const vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = { |
| 1477 |
vga_draw_line2_8, |
| 1478 |
vga_draw_line2_16, |
| 1479 |
vga_draw_line2_16, |
| 1480 |
vga_draw_line2_32, |
| 1481 |
vga_draw_line2_32, |
| 1482 |
vga_draw_line2_16, |
| 1483 |
vga_draw_line2_16, |
| 1484 |
|
| 1485 |
vga_draw_line2d2_8, |
| 1486 |
vga_draw_line2d2_16, |
| 1487 |
vga_draw_line2d2_16, |
| 1488 |
vga_draw_line2d2_32, |
| 1489 |
vga_draw_line2d2_32, |
| 1490 |
vga_draw_line2d2_16, |
| 1491 |
vga_draw_line2d2_16, |
| 1492 |
|
| 1493 |
vga_draw_line4_8, |
| 1494 |
vga_draw_line4_16, |
| 1495 |
vga_draw_line4_16, |
| 1496 |
vga_draw_line4_32, |
| 1497 |
vga_draw_line4_32, |
| 1498 |
vga_draw_line4_16, |
| 1499 |
vga_draw_line4_16, |
| 1500 |
|
| 1501 |
vga_draw_line4d2_8, |
| 1502 |
vga_draw_line4d2_16, |
| 1503 |
vga_draw_line4d2_16, |
| 1504 |
vga_draw_line4d2_32, |
| 1505 |
vga_draw_line4d2_32, |
| 1506 |
vga_draw_line4d2_16, |
| 1507 |
vga_draw_line4d2_16, |
| 1508 |
|
| 1509 |
vga_draw_line8d2_8, |
| 1510 |
vga_draw_line8d2_16, |
| 1511 |
vga_draw_line8d2_16, |
| 1512 |
vga_draw_line8d2_32, |
| 1513 |
vga_draw_line8d2_32, |
| 1514 |
vga_draw_line8d2_16, |
| 1515 |
vga_draw_line8d2_16, |
| 1516 |
|
| 1517 |
vga_draw_line8_8, |
| 1518 |
vga_draw_line8_16, |
| 1519 |
vga_draw_line8_16, |
| 1520 |
vga_draw_line8_32, |
| 1521 |
vga_draw_line8_32, |
| 1522 |
vga_draw_line8_16, |
| 1523 |
vga_draw_line8_16, |
| 1524 |
|
| 1525 |
vga_draw_line15_8, |
| 1526 |
vga_draw_line15_15, |
| 1527 |
vga_draw_line15_16, |
| 1528 |
vga_draw_line15_32, |
| 1529 |
vga_draw_line15_32bgr, |
| 1530 |
vga_draw_line15_15bgr, |
| 1531 |
vga_draw_line15_16bgr, |
| 1532 |
|
| 1533 |
vga_draw_line16_8, |
| 1534 |
vga_draw_line16_15, |
| 1535 |
vga_draw_line16_16, |
| 1536 |
vga_draw_line16_32, |
| 1537 |
vga_draw_line16_32bgr, |
| 1538 |
vga_draw_line16_15bgr, |
| 1539 |
vga_draw_line16_16bgr, |
| 1540 |
|
| 1541 |
vga_draw_line24_8, |
| 1542 |
vga_draw_line24_15, |
| 1543 |
vga_draw_line24_16, |
| 1544 |
vga_draw_line24_32, |
| 1545 |
vga_draw_line24_32bgr, |
| 1546 |
vga_draw_line24_15bgr, |
| 1547 |
vga_draw_line24_16bgr, |
| 1548 |
|
| 1549 |
vga_draw_line32_8, |
| 1550 |
vga_draw_line32_15, |
| 1551 |
vga_draw_line32_16, |
| 1552 |
vga_draw_line32_32, |
| 1553 |
vga_draw_line32_32bgr, |
| 1554 |
vga_draw_line32_15bgr, |
| 1555 |
vga_draw_line32_16bgr, |
| 1556 |
}; |
| 1557 |
|
| 1558 |
static int vga_get_bpp(VGACommonState *s) |
| 1559 |
{
|
| 1560 |
int ret;
|
| 1561 |
#ifdef CONFIG_BOCHS_VBE
|
| 1562 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
| 1563 |
ret = s->vbe_regs[VBE_DISPI_INDEX_BPP]; |
| 1564 |
} else
|
| 1565 |
#endif
|
| 1566 |
{
|
| 1567 |
ret = 0;
|
| 1568 |
} |
| 1569 |
return ret;
|
| 1570 |
} |
| 1571 |
|
| 1572 |
static void vga_get_resolution(VGACommonState *s, int *pwidth, int *pheight) |
| 1573 |
{
|
| 1574 |
int width, height;
|
| 1575 |
|
| 1576 |
#ifdef CONFIG_BOCHS_VBE
|
| 1577 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
| 1578 |
width = s->vbe_regs[VBE_DISPI_INDEX_XRES]; |
| 1579 |
height = s->vbe_regs[VBE_DISPI_INDEX_YRES]; |
| 1580 |
} else
|
| 1581 |
#endif
|
| 1582 |
{
|
| 1583 |
width = (s->cr[VGA_CRTC_H_DISP] + 1) * 8; |
| 1584 |
height = s->cr[VGA_CRTC_V_DISP_END] | |
| 1585 |
((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) | |
| 1586 |
((s->cr[VGA_CRTC_OVERFLOW] & 0x40) << 3); |
| 1587 |
height = (height + 1);
|
| 1588 |
} |
| 1589 |
*pwidth = width; |
| 1590 |
*pheight = height; |
| 1591 |
} |
| 1592 |
|
| 1593 |
void vga_invalidate_scanlines(VGACommonState *s, int y1, int y2) |
| 1594 |
{
|
| 1595 |
int y;
|
| 1596 |
if (y1 >= VGA_MAX_HEIGHT)
|
| 1597 |
return;
|
| 1598 |
if (y2 >= VGA_MAX_HEIGHT)
|
| 1599 |
y2 = VGA_MAX_HEIGHT; |
| 1600 |
for(y = y1; y < y2; y++) {
|
| 1601 |
s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f); |
| 1602 |
} |
| 1603 |
} |
| 1604 |
|
| 1605 |
static void vga_sync_dirty_bitmap(VGACommonState *s) |
| 1606 |
{
|
| 1607 |
memory_region_sync_dirty_bitmap(&s->vram); |
| 1608 |
} |
| 1609 |
|
| 1610 |
void vga_dirty_log_start(VGACommonState *s)
|
| 1611 |
{
|
| 1612 |
memory_region_set_log(&s->vram, true, DIRTY_MEMORY_VGA);
|
| 1613 |
} |
| 1614 |
|
| 1615 |
void vga_dirty_log_stop(VGACommonState *s)
|
| 1616 |
{
|
| 1617 |
memory_region_set_log(&s->vram, false, DIRTY_MEMORY_VGA);
|
| 1618 |
} |
| 1619 |
|
| 1620 |
/*
|
| 1621 |
* graphic modes
|
| 1622 |
*/
|
| 1623 |
static void vga_draw_graphic(VGACommonState *s, int full_update) |
| 1624 |
{
|
| 1625 |
int y1, y, update, linesize, y_start, double_scan, mask, depth;
|
| 1626 |
int width, height, shift_control, line_offset, bwidth, bits;
|
| 1627 |
ram_addr_t page0, page1, page_min, page_max; |
| 1628 |
int disp_width, multi_scan, multi_run;
|
| 1629 |
uint8_t *d; |
| 1630 |
uint32_t v, addr1, addr; |
| 1631 |
vga_draw_line_func *vga_draw_line; |
| 1632 |
|
| 1633 |
full_update |= update_basic_params(s); |
| 1634 |
|
| 1635 |
if (!full_update)
|
| 1636 |
vga_sync_dirty_bitmap(s); |
| 1637 |
|
| 1638 |
s->get_resolution(s, &width, &height); |
| 1639 |
disp_width = width; |
| 1640 |
|
| 1641 |
shift_control = (s->gr[VGA_GFX_MODE] >> 5) & 3; |
| 1642 |
double_scan = (s->cr[VGA_CRTC_MAX_SCAN] >> 7);
|
| 1643 |
if (shift_control != 1) { |
| 1644 |
multi_scan = (((s->cr[VGA_CRTC_MAX_SCAN] & 0x1f) + 1) << double_scan) |
| 1645 |
- 1;
|
| 1646 |
} else {
|
| 1647 |
/* in CGA modes, multi_scan is ignored */
|
| 1648 |
/* XXX: is it correct ? */
|
| 1649 |
multi_scan = double_scan; |
| 1650 |
} |
| 1651 |
multi_run = multi_scan; |
| 1652 |
if (shift_control != s->shift_control ||
|
| 1653 |
double_scan != s->double_scan) {
|
| 1654 |
full_update = 1;
|
| 1655 |
s->shift_control = shift_control; |
| 1656 |
s->double_scan = double_scan; |
| 1657 |
} |
| 1658 |
|
| 1659 |
if (shift_control == 0) { |
| 1660 |
if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { |
| 1661 |
disp_width <<= 1;
|
| 1662 |
} |
| 1663 |
} else if (shift_control == 1) { |
| 1664 |
if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { |
| 1665 |
disp_width <<= 1;
|
| 1666 |
} |
| 1667 |
} |
| 1668 |
|
| 1669 |
depth = s->get_bpp(s); |
| 1670 |
if (s->line_offset != s->last_line_offset ||
|
| 1671 |
disp_width != s->last_width || |
| 1672 |
height != s->last_height || |
| 1673 |
s->last_depth != depth) {
|
| 1674 |
#if defined(HOST_WORDS_BIGENDIAN) == defined(TARGET_WORDS_BIGENDIAN)
|
| 1675 |
if (depth == 16 || depth == 32) { |
| 1676 |
#else
|
| 1677 |
if (depth == 32) { |
| 1678 |
#endif
|
| 1679 |
qemu_free_displaysurface(s->ds); |
| 1680 |
s->ds->surface = qemu_create_displaysurface_from(disp_width, height, depth, |
| 1681 |
s->line_offset, |
| 1682 |
s->vram_ptr + (s->start_addr * 4));
|
| 1683 |
#if defined(HOST_WORDS_BIGENDIAN) != defined(TARGET_WORDS_BIGENDIAN)
|
| 1684 |
s->ds->surface->pf = qemu_different_endianness_pixelformat(depth); |
| 1685 |
#endif
|
| 1686 |
dpy_resize(s->ds); |
| 1687 |
} else {
|
| 1688 |
qemu_console_resize(s->ds, disp_width, height); |
| 1689 |
} |
| 1690 |
s->last_scr_width = disp_width; |
| 1691 |
s->last_scr_height = height; |
| 1692 |
s->last_width = disp_width; |
| 1693 |
s->last_height = height; |
| 1694 |
s->last_line_offset = s->line_offset; |
| 1695 |
s->last_depth = depth; |
| 1696 |
full_update = 1;
|
| 1697 |
} else if (is_buffer_shared(s->ds->surface) && |
| 1698 |
(full_update || s->ds->surface->data != s->vram_ptr + (s->start_addr * 4))) {
|
| 1699 |
s->ds->surface->data = s->vram_ptr + (s->start_addr * 4);
|
| 1700 |
dpy_setdata(s->ds); |
| 1701 |
} |
| 1702 |
|
| 1703 |
s->rgb_to_pixel = |
| 1704 |
rgb_to_pixel_dup_table[get_depth_index(s->ds)]; |
| 1705 |
|
| 1706 |
if (shift_control == 0) { |
| 1707 |
full_update |= update_palette16(s); |
| 1708 |
if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { |
| 1709 |
v = VGA_DRAW_LINE4D2; |
| 1710 |
} else {
|
| 1711 |
v = VGA_DRAW_LINE4; |
| 1712 |
} |
| 1713 |
bits = 4;
|
| 1714 |
} else if (shift_control == 1) { |
| 1715 |
full_update |= update_palette16(s); |
| 1716 |
if (s->sr[VGA_SEQ_CLOCK_MODE] & 8) { |
| 1717 |
v = VGA_DRAW_LINE2D2; |
| 1718 |
} else {
|
| 1719 |
v = VGA_DRAW_LINE2; |
| 1720 |
} |
| 1721 |
bits = 4;
|
| 1722 |
} else {
|
| 1723 |
switch(s->get_bpp(s)) {
|
| 1724 |
default:
|
| 1725 |
case 0: |
| 1726 |
full_update |= update_palette256(s); |
| 1727 |
v = VGA_DRAW_LINE8D2; |
| 1728 |
bits = 4;
|
| 1729 |
break;
|
| 1730 |
case 8: |
| 1731 |
full_update |= update_palette256(s); |
| 1732 |
v = VGA_DRAW_LINE8; |
| 1733 |
bits = 8;
|
| 1734 |
break;
|
| 1735 |
case 15: |
| 1736 |
v = VGA_DRAW_LINE15; |
| 1737 |
bits = 16;
|
| 1738 |
break;
|
| 1739 |
case 16: |
| 1740 |
v = VGA_DRAW_LINE16; |
| 1741 |
bits = 16;
|
| 1742 |
break;
|
| 1743 |
case 24: |
| 1744 |
v = VGA_DRAW_LINE24; |
| 1745 |
bits = 24;
|
| 1746 |
break;
|
| 1747 |
case 32: |
| 1748 |
v = VGA_DRAW_LINE32; |
| 1749 |
bits = 32;
|
| 1750 |
break;
|
| 1751 |
} |
| 1752 |
} |
| 1753 |
vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)]; |
| 1754 |
|
| 1755 |
if (!is_buffer_shared(s->ds->surface) && s->cursor_invalidate)
|
| 1756 |
s->cursor_invalidate(s); |
| 1757 |
|
| 1758 |
line_offset = s->line_offset; |
| 1759 |
#if 0
|
| 1760 |
printf("w=%d h=%d v=%d line_offset=%d cr[0x09]=0x%02x cr[0x17]=0x%02x linecmp=%d sr[0x01]=0x%02x\n",
|
| 1761 |
width, height, v, line_offset, s->cr[9], s->cr[VGA_CRTC_MODE],
|
| 1762 |
s->line_compare, s->sr[VGA_SEQ_CLOCK_MODE]);
|
| 1763 |
#endif
|
| 1764 |
addr1 = (s->start_addr * 4);
|
| 1765 |
bwidth = (width * bits + 7) / 8; |
| 1766 |
y_start = -1;
|
| 1767 |
page_min = -1;
|
| 1768 |
page_max = 0;
|
| 1769 |
d = ds_get_data(s->ds); |
| 1770 |
linesize = ds_get_linesize(s->ds); |
| 1771 |
y1 = 0;
|
| 1772 |
for(y = 0; y < height; y++) { |
| 1773 |
addr = addr1; |
| 1774 |
if (!(s->cr[VGA_CRTC_MODE] & 1)) { |
| 1775 |
int shift;
|
| 1776 |
/* CGA compatibility handling */
|
| 1777 |
shift = 14 + ((s->cr[VGA_CRTC_MODE] >> 6) & 1); |
| 1778 |
addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift); |
| 1779 |
} |
| 1780 |
if (!(s->cr[VGA_CRTC_MODE] & 2)) { |
| 1781 |
addr = (addr & ~0x8000) | ((y1 & 2) << 14); |
| 1782 |
} |
| 1783 |
update = full_update; |
| 1784 |
page0 = addr; |
| 1785 |
page1 = addr + bwidth - 1;
|
| 1786 |
update |= memory_region_get_dirty(&s->vram, page0, page1 - page0, |
| 1787 |
DIRTY_MEMORY_VGA); |
| 1788 |
/* explicit invalidation for the hardware cursor */
|
| 1789 |
update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1; |
| 1790 |
if (update) {
|
| 1791 |
if (y_start < 0) |
| 1792 |
y_start = y; |
| 1793 |
if (page0 < page_min)
|
| 1794 |
page_min = page0; |
| 1795 |
if (page1 > page_max)
|
| 1796 |
page_max = page1; |
| 1797 |
if (!(is_buffer_shared(s->ds->surface))) {
|
| 1798 |
vga_draw_line(s, d, s->vram_ptr + addr, width); |
| 1799 |
if (s->cursor_draw_line)
|
| 1800 |
s->cursor_draw_line(s, d, y); |
| 1801 |
} |
| 1802 |
} else {
|
| 1803 |
if (y_start >= 0) { |
| 1804 |
/* flush to display */
|
| 1805 |
dpy_update(s->ds, 0, y_start,
|
| 1806 |
disp_width, y - y_start); |
| 1807 |
y_start = -1;
|
| 1808 |
} |
| 1809 |
} |
| 1810 |
if (!multi_run) {
|
| 1811 |
mask = (s->cr[VGA_CRTC_MODE] & 3) ^ 3; |
| 1812 |
if ((y1 & mask) == mask)
|
| 1813 |
addr1 += line_offset; |
| 1814 |
y1++; |
| 1815 |
multi_run = multi_scan; |
| 1816 |
} else {
|
| 1817 |
multi_run--; |
| 1818 |
} |
| 1819 |
/* line compare acts on the displayed lines */
|
| 1820 |
if (y == s->line_compare)
|
| 1821 |
addr1 = 0;
|
| 1822 |
d += linesize; |
| 1823 |
} |
| 1824 |
if (y_start >= 0) { |
| 1825 |
/* flush to display */
|
| 1826 |
dpy_update(s->ds, 0, y_start,
|
| 1827 |
disp_width, y - y_start); |
| 1828 |
} |
| 1829 |
/* reset modified pages */
|
| 1830 |
if (page_max >= page_min) {
|
| 1831 |
memory_region_reset_dirty(&s->vram, |
| 1832 |
page_min, |
| 1833 |
page_max - page_min, |
| 1834 |
DIRTY_MEMORY_VGA); |
| 1835 |
} |
| 1836 |
memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4); |
| 1837 |
} |
| 1838 |
|
| 1839 |
static void vga_draw_blank(VGACommonState *s, int full_update) |
| 1840 |
{
|
| 1841 |
int i, w, val;
|
| 1842 |
uint8_t *d; |
| 1843 |
|
| 1844 |
if (!full_update)
|
| 1845 |
return;
|
| 1846 |
if (s->last_scr_width <= 0 || s->last_scr_height <= 0) |
| 1847 |
return;
|
| 1848 |
|
| 1849 |
s->rgb_to_pixel = |
| 1850 |
rgb_to_pixel_dup_table[get_depth_index(s->ds)]; |
| 1851 |
if (ds_get_bits_per_pixel(s->ds) == 8) |
| 1852 |
val = s->rgb_to_pixel(0, 0, 0); |
| 1853 |
else
|
| 1854 |
val = 0;
|
| 1855 |
w = s->last_scr_width * ((ds_get_bits_per_pixel(s->ds) + 7) >> 3); |
| 1856 |
d = ds_get_data(s->ds); |
| 1857 |
for(i = 0; i < s->last_scr_height; i++) { |
| 1858 |
memset(d, val, w); |
| 1859 |
d += ds_get_linesize(s->ds); |
| 1860 |
} |
| 1861 |
dpy_update(s->ds, 0, 0, |
| 1862 |
s->last_scr_width, s->last_scr_height); |
| 1863 |
} |
| 1864 |
|
| 1865 |
#define GMODE_TEXT 0 |
| 1866 |
#define GMODE_GRAPH 1 |
| 1867 |
#define GMODE_BLANK 2 |
| 1868 |
|
| 1869 |
static void vga_update_display(void *opaque) |
| 1870 |
{
|
| 1871 |
VGACommonState *s = opaque; |
| 1872 |
int full_update, graphic_mode;
|
| 1873 |
|
| 1874 |
qemu_flush_coalesced_mmio_buffer(); |
| 1875 |
|
| 1876 |
if (ds_get_bits_per_pixel(s->ds) == 0) { |
| 1877 |
/* nothing to do */
|
| 1878 |
} else {
|
| 1879 |
full_update = 0;
|
| 1880 |
if (!(s->ar_index & 0x20)) { |
| 1881 |
graphic_mode = GMODE_BLANK; |
| 1882 |
} else {
|
| 1883 |
graphic_mode = s->gr[VGA_GFX_MISC] & VGA_GR06_GRAPHICS_MODE; |
| 1884 |
} |
| 1885 |
if (graphic_mode != s->graphic_mode) {
|
| 1886 |
s->graphic_mode = graphic_mode; |
| 1887 |
full_update = 1;
|
| 1888 |
} |
| 1889 |
switch(graphic_mode) {
|
| 1890 |
case GMODE_TEXT:
|
| 1891 |
vga_draw_text(s, full_update); |
| 1892 |
break;
|
| 1893 |
case GMODE_GRAPH:
|
| 1894 |
vga_draw_graphic(s, full_update); |
| 1895 |
break;
|
| 1896 |
case GMODE_BLANK:
|
| 1897 |
default:
|
| 1898 |
vga_draw_blank(s, full_update); |
| 1899 |
break;
|
| 1900 |
} |
| 1901 |
} |
| 1902 |
} |
| 1903 |
|
| 1904 |
/* force a full display refresh */
|
| 1905 |
static void vga_invalidate_display(void *opaque) |
| 1906 |
{
|
| 1907 |
VGACommonState *s = opaque; |
| 1908 |
|
| 1909 |
s->last_width = -1;
|
| 1910 |
s->last_height = -1;
|
| 1911 |
} |
| 1912 |
|
| 1913 |
void vga_common_reset(VGACommonState *s)
|
| 1914 |
{
|
| 1915 |
s->sr_index = 0;
|
| 1916 |
memset(s->sr, '\0', sizeof(s->sr)); |
| 1917 |
s->gr_index = 0;
|
| 1918 |
memset(s->gr, '\0', sizeof(s->gr)); |
| 1919 |
s->ar_index = 0;
|
| 1920 |
memset(s->ar, '\0', sizeof(s->ar)); |
| 1921 |
s->ar_flip_flop = 0;
|
| 1922 |
s->cr_index = 0;
|
| 1923 |
memset(s->cr, '\0', sizeof(s->cr)); |
| 1924 |
s->msr = 0;
|
| 1925 |
s->fcr = 0;
|
| 1926 |
s->st00 = 0;
|
| 1927 |
s->st01 = 0;
|
| 1928 |
s->dac_state = 0;
|
| 1929 |
s->dac_sub_index = 0;
|
| 1930 |
s->dac_read_index = 0;
|
| 1931 |
s->dac_write_index = 0;
|
| 1932 |
memset(s->dac_cache, '\0', sizeof(s->dac_cache)); |
| 1933 |
s->dac_8bit = 0;
|
| 1934 |
memset(s->palette, '\0', sizeof(s->palette)); |
| 1935 |
s->bank_offset = 0;
|
| 1936 |
#ifdef CONFIG_BOCHS_VBE
|
| 1937 |
s->vbe_index = 0;
|
| 1938 |
memset(s->vbe_regs, '\0', sizeof(s->vbe_regs)); |
| 1939 |
s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID5; |
| 1940 |
s->vbe_start_addr = 0;
|
| 1941 |
s->vbe_line_offset = 0;
|
| 1942 |
s->vbe_bank_mask = (s->vram_size >> 16) - 1; |
| 1943 |
#endif
|
| 1944 |
memset(s->font_offsets, '\0', sizeof(s->font_offsets)); |
| 1945 |
s->graphic_mode = -1; /* force full update */ |
| 1946 |
s->shift_control = 0;
|
| 1947 |
s->double_scan = 0;
|
| 1948 |
s->line_offset = 0;
|
| 1949 |
s->line_compare = 0;
|
| 1950 |
s->start_addr = 0;
|
| 1951 |
s->plane_updated = 0;
|
| 1952 |
s->last_cw = 0;
|
| 1953 |
s->last_ch = 0;
|
| 1954 |
s->last_width = 0;
|
| 1955 |
s->last_height = 0;
|
| 1956 |
s->last_scr_width = 0;
|
| 1957 |
s->last_scr_height = 0;
|
| 1958 |
s->cursor_start = 0;
|
| 1959 |
s->cursor_end = 0;
|
| 1960 |
s->cursor_offset = 0;
|
| 1961 |
memset(s->invalidated_y_table, '\0', sizeof(s->invalidated_y_table)); |
| 1962 |
memset(s->last_palette, '\0', sizeof(s->last_palette)); |
| 1963 |
memset(s->last_ch_attr, '\0', sizeof(s->last_ch_attr)); |
| 1964 |
switch (vga_retrace_method) {
|
| 1965 |
case VGA_RETRACE_DUMB:
|
| 1966 |
break;
|
| 1967 |
case VGA_RETRACE_PRECISE:
|
| 1968 |
memset(&s->retrace_info, 0, sizeof (s->retrace_info)); |
| 1969 |
break;
|
| 1970 |
} |
| 1971 |
vga_update_memory_access(s); |
| 1972 |
} |
| 1973 |
|
| 1974 |
static void vga_reset(void *opaque) |
| 1975 |
{
|
| 1976 |
VGACommonState *s = opaque; |
| 1977 |
vga_common_reset(s); |
| 1978 |
} |
| 1979 |
|
| 1980 |
#define TEXTMODE_X(x) ((x) % width)
|
| 1981 |
#define TEXTMODE_Y(x) ((x) / width)
|
| 1982 |
#define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \ |
| 1983 |
((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1)) |
| 1984 |
/* relay text rendering to the display driver
|
| 1985 |
* instead of doing a full vga_update_display() */
|
| 1986 |
static void vga_update_text(void *opaque, console_ch_t *chardata) |
| 1987 |
{
|
| 1988 |
VGACommonState *s = opaque; |
| 1989 |
int graphic_mode, i, cursor_offset, cursor_visible;
|
| 1990 |
int cw, cheight, width, height, size, c_min, c_max;
|
| 1991 |
uint32_t *src; |
| 1992 |
console_ch_t *dst, val; |
| 1993 |
char msg_buffer[80]; |
| 1994 |
int full_update = 0; |
| 1995 |
|
| 1996 |
qemu_flush_coalesced_mmio_buffer(); |
| 1997 |
|
| 1998 |
if (!(s->ar_index & 0x20)) { |
| 1999 |
graphic_mode = GMODE_BLANK; |
| 2000 |
} else {
|
| 2001 |
graphic_mode = s->gr[VGA_GFX_MISC] & VGA_GR06_GRAPHICS_MODE; |
| 2002 |
} |
| 2003 |
if (graphic_mode != s->graphic_mode) {
|
| 2004 |
s->graphic_mode = graphic_mode; |
| 2005 |
full_update = 1;
|
| 2006 |
} |
| 2007 |
if (s->last_width == -1) { |
| 2008 |
s->last_width = 0;
|
| 2009 |
full_update = 1;
|
| 2010 |
} |
| 2011 |
|
| 2012 |
switch (graphic_mode) {
|
| 2013 |
case GMODE_TEXT:
|
| 2014 |
/* TODO: update palette */
|
| 2015 |
full_update |= update_basic_params(s); |
| 2016 |
|
| 2017 |
/* total width & height */
|
| 2018 |
cheight = (s->cr[VGA_CRTC_MAX_SCAN] & 0x1f) + 1; |
| 2019 |
cw = 8;
|
| 2020 |
if (!(s->sr[VGA_SEQ_CLOCK_MODE] & VGA_SR01_CHAR_CLK_8DOTS)) {
|
| 2021 |
cw = 9;
|
| 2022 |
} |
| 2023 |
if (s->sr[VGA_SEQ_CLOCK_MODE] & 0x08) { |
| 2024 |
cw = 16; /* NOTE: no 18 pixel wide */ |
| 2025 |
} |
| 2026 |
width = (s->cr[VGA_CRTC_H_DISP] + 1);
|
| 2027 |
if (s->cr[VGA_CRTC_V_TOTAL] == 100) { |
| 2028 |
/* ugly hack for CGA 160x100x16 - explain me the logic */
|
| 2029 |
height = 100;
|
| 2030 |
} else {
|
| 2031 |
height = s->cr[VGA_CRTC_V_DISP_END] | |
| 2032 |
((s->cr[VGA_CRTC_OVERFLOW] & 0x02) << 7) | |
| 2033 |
((s->cr[VGA_CRTC_OVERFLOW] & 0x40) << 3); |
| 2034 |
height = (height + 1) / cheight;
|
| 2035 |
} |
| 2036 |
|
| 2037 |
size = (height * width); |
| 2038 |
if (size > CH_ATTR_SIZE) {
|
| 2039 |
if (!full_update)
|
| 2040 |
return;
|
| 2041 |
|
| 2042 |
snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Text mode", |
| 2043 |
width, height); |
| 2044 |
break;
|
| 2045 |
} |
| 2046 |
|
| 2047 |
if (width != s->last_width || height != s->last_height ||
|
| 2048 |
cw != s->last_cw || cheight != s->last_ch) {
|
| 2049 |
s->last_scr_width = width * cw; |
| 2050 |
s->last_scr_height = height * cheight; |
| 2051 |
s->ds->surface->width = width; |
| 2052 |
s->ds->surface->height = height; |
| 2053 |
dpy_resize(s->ds); |
| 2054 |
s->last_width = width; |
| 2055 |
s->last_height = height; |
| 2056 |
s->last_ch = cheight; |
| 2057 |
s->last_cw = cw; |
| 2058 |
full_update = 1;
|
| 2059 |
} |
| 2060 |
|
| 2061 |
/* Update "hardware" cursor */
|
| 2062 |
cursor_offset = ((s->cr[VGA_CRTC_CURSOR_HI] << 8) |
|
| 2063 |
s->cr[VGA_CRTC_CURSOR_LO]) - s->start_addr; |
| 2064 |
if (cursor_offset != s->cursor_offset ||
|
| 2065 |
s->cr[VGA_CRTC_CURSOR_START] != s->cursor_start || |
| 2066 |
s->cr[VGA_CRTC_CURSOR_END] != s->cursor_end || full_update) {
|
| 2067 |
cursor_visible = !(s->cr[VGA_CRTC_CURSOR_START] & 0x20);
|
| 2068 |
if (cursor_visible && cursor_offset < size && cursor_offset >= 0) |
| 2069 |
dpy_cursor(s->ds, |
| 2070 |
TEXTMODE_X(cursor_offset), |
| 2071 |
TEXTMODE_Y(cursor_offset)); |
| 2072 |
else
|
| 2073 |
dpy_cursor(s->ds, -1, -1); |
| 2074 |
s->cursor_offset = cursor_offset; |
| 2075 |
s->cursor_start = s->cr[VGA_CRTC_CURSOR_START]; |
| 2076 |
s->cursor_end = s->cr[VGA_CRTC_CURSOR_END]; |
| 2077 |
} |
| 2078 |
|
| 2079 |
src = (uint32_t *) s->vram_ptr + s->start_addr; |
| 2080 |
dst = chardata; |
| 2081 |
|
| 2082 |
if (full_update) {
|
| 2083 |
for (i = 0; i < size; src ++, dst ++, i ++) |
| 2084 |
console_write_ch(dst, VMEM2CHTYPE(le32_to_cpu(*src))); |
| 2085 |
|
| 2086 |
dpy_update(s->ds, 0, 0, width, height); |
| 2087 |
} else {
|
| 2088 |
c_max = 0;
|
| 2089 |
|
| 2090 |
for (i = 0; i < size; src ++, dst ++, i ++) { |
| 2091 |
console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src))); |
| 2092 |
if (*dst != val) {
|
| 2093 |
*dst = val; |
| 2094 |
c_max = i; |
| 2095 |
break;
|
| 2096 |
} |
| 2097 |
} |
| 2098 |
c_min = i; |
| 2099 |
for (; i < size; src ++, dst ++, i ++) {
|
| 2100 |
console_write_ch(&val, VMEM2CHTYPE(le32_to_cpu(*src))); |
| 2101 |
if (*dst != val) {
|
| 2102 |
*dst = val; |
| 2103 |
c_max = i; |
| 2104 |
} |
| 2105 |
} |
| 2106 |
|
| 2107 |
if (c_min <= c_max) {
|
| 2108 |
i = TEXTMODE_Y(c_min); |
| 2109 |
dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1); |
| 2110 |
} |
| 2111 |
} |
| 2112 |
|
| 2113 |
return;
|
| 2114 |
case GMODE_GRAPH:
|
| 2115 |
if (!full_update)
|
| 2116 |
return;
|
| 2117 |
|
| 2118 |
s->get_resolution(s, &width, &height); |
| 2119 |
snprintf(msg_buffer, sizeof(msg_buffer), "%i x %i Graphic mode", |
| 2120 |
width, height); |
| 2121 |
break;
|
| 2122 |
case GMODE_BLANK:
|
| 2123 |
default:
|
| 2124 |
if (!full_update)
|
| 2125 |
return;
|
| 2126 |
|
| 2127 |
snprintf(msg_buffer, sizeof(msg_buffer), "VGA Blank mode"); |
| 2128 |
break;
|
| 2129 |
} |
| 2130 |
|
| 2131 |
/* Display a message */
|
| 2132 |
s->last_width = 60;
|
| 2133 |
s->last_height = height = 3;
|
| 2134 |
dpy_cursor(s->ds, -1, -1); |
| 2135 |
s->ds->surface->width = s->last_width; |
| 2136 |
s->ds->surface->height = height; |
| 2137 |
dpy_resize(s->ds); |
| 2138 |
|
| 2139 |
for (dst = chardata, i = 0; i < s->last_width * height; i ++) |
| 2140 |
console_write_ch(dst ++, ' ');
|
| 2141 |
|
| 2142 |
size = strlen(msg_buffer); |
| 2143 |
width = (s->last_width - size) / 2;
|
| 2144 |
dst = chardata + s->last_width + width; |
| 2145 |
for (i = 0; i < size; i ++) |
| 2146 |
console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
|
| 2147 |
|
| 2148 |
dpy_update(s->ds, 0, 0, s->last_width, height); |
| 2149 |
} |
| 2150 |
|
| 2151 |
static uint64_t vga_mem_read(void *opaque, target_phys_addr_t addr, |
| 2152 |
unsigned size)
|
| 2153 |
{
|
| 2154 |
VGACommonState *s = opaque; |
| 2155 |
|
| 2156 |
return vga_mem_readb(s, addr);
|
| 2157 |
} |
| 2158 |
|
| 2159 |
static void vga_mem_write(void *opaque, target_phys_addr_t addr, |
| 2160 |
uint64_t data, unsigned size)
|
| 2161 |
{
|
| 2162 |
VGACommonState *s = opaque; |
| 2163 |
|
| 2164 |
return vga_mem_writeb(s, addr, data);
|
| 2165 |
} |
| 2166 |
|
| 2167 |
const MemoryRegionOps vga_mem_ops = {
|
| 2168 |
.read = vga_mem_read, |
| 2169 |
.write = vga_mem_write, |
| 2170 |
.endianness = DEVICE_LITTLE_ENDIAN, |
| 2171 |
.impl = {
|
| 2172 |
.min_access_size = 1,
|
| 2173 |
.max_access_size = 1,
|
| 2174 |
}, |
| 2175 |
}; |
| 2176 |
|
| 2177 |
static int vga_common_post_load(void *opaque, int version_id) |
| 2178 |
{
|
| 2179 |
VGACommonState *s = opaque; |
| 2180 |
|
| 2181 |
/* force refresh */
|
| 2182 |
s->graphic_mode = -1;
|
| 2183 |
return 0; |
| 2184 |
} |
| 2185 |
|
| 2186 |
const VMStateDescription vmstate_vga_common = {
|
| 2187 |
.name = "vga",
|
| 2188 |
.version_id = 2,
|
| 2189 |
.minimum_version_id = 2,
|
| 2190 |
.minimum_version_id_old = 2,
|
| 2191 |
.post_load = vga_common_post_load, |
| 2192 |
.fields = (VMStateField []) {
|
| 2193 |
VMSTATE_UINT32(latch, VGACommonState), |
| 2194 |
VMSTATE_UINT8(sr_index, VGACommonState), |
| 2195 |
VMSTATE_PARTIAL_BUFFER(sr, VGACommonState, 8),
|
| 2196 |
VMSTATE_UINT8(gr_index, VGACommonState), |
| 2197 |
VMSTATE_PARTIAL_BUFFER(gr, VGACommonState, 16),
|
| 2198 |
VMSTATE_UINT8(ar_index, VGACommonState), |
| 2199 |
VMSTATE_BUFFER(ar, VGACommonState), |
| 2200 |
VMSTATE_INT32(ar_flip_flop, VGACommonState), |
| 2201 |
VMSTATE_UINT8(cr_index, VGACommonState), |
| 2202 |
VMSTATE_BUFFER(cr, VGACommonState), |
| 2203 |
VMSTATE_UINT8(msr, VGACommonState), |
| 2204 |
VMSTATE_UINT8(fcr, VGACommonState), |
| 2205 |
VMSTATE_UINT8(st00, VGACommonState), |
| 2206 |
VMSTATE_UINT8(st01, VGACommonState), |
| 2207 |
|
| 2208 |
VMSTATE_UINT8(dac_state, VGACommonState), |
| 2209 |
VMSTATE_UINT8(dac_sub_index, VGACommonState), |
| 2210 |
VMSTATE_UINT8(dac_read_index, VGACommonState), |
| 2211 |
VMSTATE_UINT8(dac_write_index, VGACommonState), |
| 2212 |
VMSTATE_BUFFER(dac_cache, VGACommonState), |
| 2213 |
VMSTATE_BUFFER(palette, VGACommonState), |
| 2214 |
|
| 2215 |
VMSTATE_INT32(bank_offset, VGACommonState), |
| 2216 |
VMSTATE_UINT8_EQUAL(is_vbe_vmstate, VGACommonState), |
| 2217 |
#ifdef CONFIG_BOCHS_VBE
|
| 2218 |
VMSTATE_UINT16(vbe_index, VGACommonState), |
| 2219 |
VMSTATE_UINT16_ARRAY(vbe_regs, VGACommonState, VBE_DISPI_INDEX_NB), |
| 2220 |
VMSTATE_UINT32(vbe_start_addr, VGACommonState), |
| 2221 |
VMSTATE_UINT32(vbe_line_offset, VGACommonState), |
| 2222 |
VMSTATE_UINT32(vbe_bank_mask, VGACommonState), |
| 2223 |
#endif
|
| 2224 |
VMSTATE_END_OF_LIST() |
| 2225 |
} |
| 2226 |
}; |
| 2227 |
|
| 2228 |
void vga_common_init(VGACommonState *s, int vga_ram_size) |
| 2229 |
{
|
| 2230 |
int i, j, v, b;
|
| 2231 |
|
| 2232 |
for(i = 0;i < 256; i++) { |
| 2233 |
v = 0;
|
| 2234 |
for(j = 0; j < 8; j++) { |
| 2235 |
v |= ((i >> j) & 1) << (j * 4); |
| 2236 |
} |
| 2237 |
expand4[i] = v; |
| 2238 |
|
| 2239 |
v = 0;
|
| 2240 |
for(j = 0; j < 4; j++) { |
| 2241 |
v |= ((i >> (2 * j)) & 3) << (j * 4); |
| 2242 |
} |
| 2243 |
expand2[i] = v; |
| 2244 |
} |
| 2245 |
for(i = 0; i < 16; i++) { |
| 2246 |
v = 0;
|
| 2247 |
for(j = 0; j < 4; j++) { |
| 2248 |
b = ((i >> j) & 1);
|
| 2249 |
v |= b << (2 * j);
|
| 2250 |
v |= b << (2 * j + 1); |
| 2251 |
} |
| 2252 |
expand4to8[i] = v; |
| 2253 |
} |
| 2254 |
|
| 2255 |
#ifdef CONFIG_BOCHS_VBE
|
| 2256 |
s->is_vbe_vmstate = 1;
|
| 2257 |
#else
|
| 2258 |
s->is_vbe_vmstate = 0;
|
| 2259 |
#endif
|
| 2260 |
memory_region_init_ram(&s->vram, "vga.vram", vga_ram_size);
|
| 2261 |
vmstate_register_ram_global(&s->vram); |
| 2262 |
xen_register_framebuffer(&s->vram); |
| 2263 |
s->vram_ptr = memory_region_get_ram_ptr(&s->vram); |
| 2264 |
s->vram_size = vga_ram_size; |
| 2265 |
s->get_bpp = vga_get_bpp; |
| 2266 |
s->get_offsets = vga_get_offsets; |
| 2267 |
s->get_resolution = vga_get_resolution; |
| 2268 |
s->update = vga_update_display; |
| 2269 |
s->invalidate = vga_invalidate_display; |
| 2270 |
s->screen_dump = vga_screen_dump; |
| 2271 |
s->text_update = vga_update_text; |
| 2272 |
switch (vga_retrace_method) {
|
| 2273 |
case VGA_RETRACE_DUMB:
|
| 2274 |
s->retrace = vga_dumb_retrace; |
| 2275 |
s->update_retrace_info = vga_dumb_update_retrace_info; |
| 2276 |
break;
|
| 2277 |
|
| 2278 |
case VGA_RETRACE_PRECISE:
|
| 2279 |
s->retrace = vga_precise_retrace; |
| 2280 |
s->update_retrace_info = vga_precise_update_retrace_info; |
| 2281 |
break;
|
| 2282 |
} |
| 2283 |
vga_dirty_log_start(s); |
| 2284 |
} |
| 2285 |
|
| 2286 |
static const MemoryRegionPortio vga_portio_list[] = { |
| 2287 |
{ 0x04, 2, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3b4 */
|
| 2288 |
{ 0x0a, 1, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3ba */
|
| 2289 |
{ 0x10, 16, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3c0 */
|
| 2290 |
{ 0x24, 2, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3d4 */
|
| 2291 |
{ 0x2a, 1, 1, .read = vga_ioport_read, .write = vga_ioport_write }, /* 3da */
|
| 2292 |
PORTIO_END_OF_LIST(), |
| 2293 |
}; |
| 2294 |
|
| 2295 |
#ifdef CONFIG_BOCHS_VBE
|
| 2296 |
static const MemoryRegionPortio vbe_portio_list[] = { |
| 2297 |
{ 0, 1, 2, .read = vbe_ioport_read_index, .write = vbe_ioport_write_index },
|
| 2298 |
# ifdef TARGET_I386
|
| 2299 |
{ 1, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data },
|
| 2300 |
# else
|
| 2301 |
{ 2, 1, 2, .read = vbe_ioport_read_data, .write = vbe_ioport_write_data },
|
| 2302 |
# endif
|
| 2303 |
PORTIO_END_OF_LIST(), |
| 2304 |
}; |
| 2305 |
#endif /* CONFIG_BOCHS_VBE */ |
| 2306 |
|
| 2307 |
/* Used by both ISA and PCI */
|
| 2308 |
MemoryRegion *vga_init_io(VGACommonState *s, |
| 2309 |
const MemoryRegionPortio **vga_ports,
|
| 2310 |
const MemoryRegionPortio **vbe_ports)
|
| 2311 |
{
|
| 2312 |
MemoryRegion *vga_mem; |
| 2313 |
|
| 2314 |
*vga_ports = vga_portio_list; |
| 2315 |
*vbe_ports = NULL;
|
| 2316 |
#ifdef CONFIG_BOCHS_VBE
|
| 2317 |
*vbe_ports = vbe_portio_list; |
| 2318 |
#endif
|
| 2319 |
|
| 2320 |
vga_mem = g_malloc(sizeof(*vga_mem));
|
| 2321 |
memory_region_init_io(vga_mem, &vga_mem_ops, s, |
| 2322 |
"vga-lowmem", 0x20000); |
| 2323 |
|
| 2324 |
return vga_mem;
|
| 2325 |
} |
| 2326 |
|
| 2327 |
void vga_init(VGACommonState *s, MemoryRegion *address_space,
|
| 2328 |
MemoryRegion *address_space_io, bool init_vga_ports)
|
| 2329 |
{
|
| 2330 |
MemoryRegion *vga_io_memory; |
| 2331 |
const MemoryRegionPortio *vga_ports, *vbe_ports;
|
| 2332 |
PortioList *vga_port_list = g_new(PortioList, 1);
|
| 2333 |
PortioList *vbe_port_list = g_new(PortioList, 1);
|
| 2334 |
|
| 2335 |
qemu_register_reset(vga_reset, s); |
| 2336 |
|
| 2337 |
s->bank_offset = 0;
|
| 2338 |
|
| 2339 |
s->legacy_address_space = address_space; |
| 2340 |
|
| 2341 |
vga_io_memory = vga_init_io(s, &vga_ports, &vbe_ports); |
| 2342 |
memory_region_add_subregion_overlap(address_space, |
| 2343 |
isa_mem_base + 0x000a0000,
|
| 2344 |
vga_io_memory, |
| 2345 |
1);
|
| 2346 |
memory_region_set_coalescing(vga_io_memory); |
| 2347 |
if (init_vga_ports) {
|
| 2348 |
portio_list_init(vga_port_list, vga_ports, s, "vga");
|
| 2349 |
portio_list_add(vga_port_list, address_space_io, 0x3b0);
|
| 2350 |
} |
| 2351 |
if (vbe_ports) {
|
| 2352 |
portio_list_init(vbe_port_list, vbe_ports, s, "vbe");
|
| 2353 |
portio_list_add(vbe_port_list, address_space_io, 0x1ce);
|
| 2354 |
} |
| 2355 |
} |
| 2356 |
|
| 2357 |
void vga_init_vbe(VGACommonState *s, MemoryRegion *system_memory)
|
| 2358 |
{
|
| 2359 |
#ifdef CONFIG_BOCHS_VBE
|
| 2360 |
/* With pc-0.12 and below we map both the PCI BAR and the fixed VBE region,
|
| 2361 |
* so use an alias to avoid double-mapping the same region.
|
| 2362 |
*/
|
| 2363 |
memory_region_init_alias(&s->vram_vbe, "vram.vbe",
|
| 2364 |
&s->vram, 0, memory_region_size(&s->vram));
|
| 2365 |
/* XXX: use optimized standard vga accesses */
|
| 2366 |
memory_region_add_subregion(system_memory, |
| 2367 |
VBE_DISPI_LFB_PHYSICAL_ADDRESS, |
| 2368 |
&s->vram_vbe); |
| 2369 |
s->vbe_mapped = 1;
|
| 2370 |
#endif
|
| 2371 |
} |
| 2372 |
/********************************************************/
|
| 2373 |
/* vga screen dump */
|
| 2374 |
|
| 2375 |
int ppm_save(const char *filename, struct DisplaySurface *ds) |
| 2376 |
{
|
| 2377 |
FILE *f; |
| 2378 |
uint8_t *d, *d1; |
| 2379 |
uint32_t v; |
| 2380 |
int y, x;
|
| 2381 |
uint8_t r, g, b; |
| 2382 |
int ret;
|
| 2383 |
char *linebuf, *pbuf;
|
| 2384 |
|
| 2385 |
trace_ppm_save(filename, ds); |
| 2386 |
f = fopen(filename, "wb");
|
| 2387 |
if (!f)
|
| 2388 |
return -1; |
| 2389 |
fprintf(f, "P6\n%d %d\n%d\n",
|
| 2390 |
ds->width, ds->height, 255);
|
| 2391 |
linebuf = g_malloc(ds->width * 3);
|
| 2392 |
d1 = ds->data; |
| 2393 |
for(y = 0; y < ds->height; y++) { |
| 2394 |
d = d1; |
| 2395 |
pbuf = linebuf; |
| 2396 |
for(x = 0; x < ds->width; x++) { |
| 2397 |
if (ds->pf.bits_per_pixel == 32) |
| 2398 |
v = *(uint32_t *)d; |
| 2399 |
else
|
| 2400 |
v = (uint32_t) (*(uint16_t *)d); |
| 2401 |
/* Limited to 8 or fewer bits per channel: */
|
| 2402 |
r = ((v >> ds->pf.rshift) & ds->pf.rmax) << (8 - ds->pf.rbits);
|
| 2403 |
g = ((v >> ds->pf.gshift) & ds->pf.gmax) << (8 - ds->pf.gbits);
|
| 2404 |
b = ((v >> ds->pf.bshift) & ds->pf.bmax) << (8 - ds->pf.bbits);
|
| 2405 |
*pbuf++ = r; |
| 2406 |
*pbuf++ = g; |
| 2407 |
*pbuf++ = b; |
| 2408 |
d += ds->pf.bytes_per_pixel; |
| 2409 |
} |
| 2410 |
d1 += ds->linesize; |
| 2411 |
ret = fwrite(linebuf, 1, pbuf - linebuf, f);
|
| 2412 |
(void)ret;
|
| 2413 |
} |
| 2414 |
g_free(linebuf); |
| 2415 |
fclose(f); |
| 2416 |
return 0; |
| 2417 |
} |
| 2418 |
|
| 2419 |
/* save the vga display in a PPM image even if no display is
|
| 2420 |
available */
|
| 2421 |
static void vga_screen_dump(void *opaque, const char *filename, bool cswitch) |
| 2422 |
{
|
| 2423 |
VGACommonState *s = opaque; |
| 2424 |
|
| 2425 |
if (cswitch) {
|
| 2426 |
vga_invalidate_display(s); |
| 2427 |
} |
| 2428 |
vga_hw_update(); |
| 2429 |
ppm_save(filename, s->ds->surface); |
| 2430 |
} |