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/*
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* QEMU VGA Emulator.
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "vl.h" |
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#include "vga_int.h" |
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//#define DEBUG_VGA
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//#define DEBUG_VGA_MEM
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//#define DEBUG_VGA_REG
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|
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//#define DEBUG_S3
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//#define DEBUG_BOCHS_VBE
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|
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/* S3 VGA is deprecated - another graphic card will be emulated */
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//#define CONFIG_S3VGA
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|
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/* force some bits to zero */
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const uint8_t sr_mask[8] = { |
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(uint8_t)~0xfc,
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(uint8_t)~0xc2,
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(uint8_t)~0xf0,
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(uint8_t)~0xc0,
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(uint8_t)~0xf1,
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(uint8_t)~0xff,
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(uint8_t)~0xff,
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(uint8_t)~0x00,
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}; |
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|
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const uint8_t gr_mask[16] = { |
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(uint8_t)~0xf0, /* 0x00 */ |
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(uint8_t)~0xf0, /* 0x01 */ |
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(uint8_t)~0xf0, /* 0x02 */ |
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(uint8_t)~0xe0, /* 0x03 */ |
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(uint8_t)~0xfc, /* 0x04 */ |
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(uint8_t)~0x84, /* 0x05 */ |
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(uint8_t)~0xf0, /* 0x06 */ |
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(uint8_t)~0xf0, /* 0x07 */ |
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(uint8_t)~0x00, /* 0x08 */ |
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(uint8_t)~0xff, /* 0x09 */ |
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(uint8_t)~0xff, /* 0x0a */ |
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(uint8_t)~0xff, /* 0x0b */ |
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(uint8_t)~0xff, /* 0x0c */ |
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(uint8_t)~0xff, /* 0x0d */ |
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(uint8_t)~0xff, /* 0x0e */ |
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(uint8_t)~0xff, /* 0x0f */ |
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}; |
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|
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#define cbswap_32(__x) \
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((uint32_t)( \ |
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(((uint32_t)(__x) & (uint32_t)0x000000ffUL) << 24) | \ |
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(((uint32_t)(__x) & (uint32_t)0x0000ff00UL) << 8) | \ |
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(((uint32_t)(__x) & (uint32_t)0x00ff0000UL) >> 8) | \ |
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(((uint32_t)(__x) & (uint32_t)0xff000000UL) >> 24) )) |
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|
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#ifdef WORDS_BIGENDIAN
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#define PAT(x) cbswap_32(x)
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#else
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#define PAT(x) (x)
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#endif
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#ifdef WORDS_BIGENDIAN
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#define BIG 1 |
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#else
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#define BIG 0 |
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#endif
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#ifdef WORDS_BIGENDIAN
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#define GET_PLANE(data, p) (((data) >> (24 - (p) * 8)) & 0xff) |
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#else
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#define GET_PLANE(data, p) (((data) >> ((p) * 8)) & 0xff) |
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#endif
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static const uint32_t mask16[16] = { |
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PAT(0x00000000),
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PAT(0x000000ff),
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PAT(0x0000ff00),
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PAT(0x0000ffff),
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PAT(0x00ff0000),
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PAT(0x00ff00ff),
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PAT(0x00ffff00),
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PAT(0x00ffffff),
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PAT(0xff000000),
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PAT(0xff0000ff),
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PAT(0xff00ff00),
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PAT(0xff00ffff),
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PAT(0xffff0000),
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PAT(0xffff00ff),
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PAT(0xffffff00),
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PAT(0xffffffff),
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}; |
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#undef PAT
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#ifdef WORDS_BIGENDIAN
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#define PAT(x) (x)
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#else
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#define PAT(x) cbswap_32(x)
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#endif
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static const uint32_t dmask16[16] = { |
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PAT(0x00000000),
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PAT(0x000000ff),
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PAT(0x0000ff00),
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PAT(0x0000ffff),
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PAT(0x00ff0000),
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PAT(0x00ff00ff),
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PAT(0x00ffff00),
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PAT(0x00ffffff),
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PAT(0xff000000),
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PAT(0xff0000ff),
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PAT(0xff00ff00),
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PAT(0xff00ffff),
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PAT(0xffff0000),
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PAT(0xffff00ff),
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PAT(0xffffff00),
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PAT(0xffffffff),
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}; |
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static const uint32_t dmask4[4] = { |
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PAT(0x00000000),
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PAT(0x0000ffff),
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PAT(0xffff0000),
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PAT(0xffffffff),
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}; |
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static uint32_t expand4[256]; |
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static uint16_t expand2[256]; |
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static uint8_t expand4to8[16]; |
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|
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VGAState *vga_state; |
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int vga_io_memory;
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static uint32_t vga_ioport_read(void *opaque, uint32_t addr) |
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{
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VGAState *s = opaque; |
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int val, index;
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/* check port range access depending on color/monochrome mode */
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if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) || |
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(addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) { |
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val = 0xff;
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} else {
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switch(addr) {
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case 0x3c0: |
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if (s->ar_flip_flop == 0) { |
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val = s->ar_index; |
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} else {
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val = 0;
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} |
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break;
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case 0x3c1: |
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index = s->ar_index & 0x1f;
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if (index < 21) |
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val = s->ar[index]; |
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else
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val = 0;
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break;
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case 0x3c2: |
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val = s->st00; |
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break;
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case 0x3c4: |
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val = s->sr_index; |
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break;
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case 0x3c5: |
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val = s->sr[s->sr_index]; |
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#ifdef DEBUG_VGA_REG
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printf("vga: read SR%x = 0x%02x\n", s->sr_index, val);
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#endif
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break;
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case 0x3c7: |
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val = s->dac_state; |
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break;
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case 0x3c8: |
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val = s->dac_write_index; |
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break;
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case 0x3c9: |
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val = s->palette[s->dac_read_index * 3 + s->dac_sub_index];
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if (++s->dac_sub_index == 3) { |
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s->dac_sub_index = 0;
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s->dac_read_index++; |
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} |
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break;
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case 0x3ca: |
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val = s->fcr; |
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break;
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case 0x3cc: |
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val = s->msr; |
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break;
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case 0x3ce: |
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val = s->gr_index; |
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break;
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case 0x3cf: |
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val = s->gr[s->gr_index]; |
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#ifdef DEBUG_VGA_REG
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printf("vga: read GR%x = 0x%02x\n", s->gr_index, val);
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#endif
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break;
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case 0x3b4: |
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case 0x3d4: |
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val = s->cr_index; |
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break;
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case 0x3b5: |
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case 0x3d5: |
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val = s->cr[s->cr_index]; |
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#ifdef DEBUG_VGA_REG
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printf("vga: read CR%x = 0x%02x\n", s->cr_index, val);
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#endif
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#ifdef DEBUG_S3
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if (s->cr_index >= 0x20) |
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printf("S3: CR read index=0x%x val=0x%x\n",
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s->cr_index, val); |
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#endif
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break;
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case 0x3ba: |
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case 0x3da: |
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/* just toggle to fool polling */
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s->st01 ^= ST01_V_RETRACE | ST01_DISP_ENABLE; |
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val = s->st01; |
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s->ar_flip_flop = 0;
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break;
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default:
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val = 0x00;
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break;
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} |
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} |
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#if defined(DEBUG_VGA)
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printf("VGA: read addr=0x%04x data=0x%02x\n", addr, val);
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#endif
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return val;
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} |
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|
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static void vga_ioport_write(void *opaque, uint32_t addr, uint32_t val) |
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{
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VGAState *s = opaque; |
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int index;
|
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|
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/* check port range access depending on color/monochrome mode */
|
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if ((addr >= 0x3b0 && addr <= 0x3bf && (s->msr & MSR_COLOR_EMULATION)) || |
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(addr >= 0x3d0 && addr <= 0x3df && !(s->msr & MSR_COLOR_EMULATION))) |
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return;
|
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|
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#ifdef DEBUG_VGA
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printf("VGA: write addr=0x%04x data=0x%02x\n", addr, val);
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#endif
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|
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switch(addr) {
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case 0x3c0: |
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if (s->ar_flip_flop == 0) { |
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val &= 0x3f;
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s->ar_index = val; |
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} else {
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index = s->ar_index & 0x1f;
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switch(index) {
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case 0x00 ... 0x0f: |
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s->ar[index] = val & 0x3f;
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break;
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case 0x10: |
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s->ar[index] = val & ~0x10;
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break;
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case 0x11: |
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s->ar[index] = val; |
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break;
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case 0x12: |
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s->ar[index] = val & ~0xc0;
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break;
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case 0x13: |
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s->ar[index] = val & ~0xf0;
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break;
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case 0x14: |
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s->ar[index] = val & ~0xf0;
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break;
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default:
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break;
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} |
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} |
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s->ar_flip_flop ^= 1;
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break;
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case 0x3c2: |
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s->msr = val & ~0x10;
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break;
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case 0x3c4: |
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s->sr_index = val & 7;
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break;
|
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case 0x3c5: |
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#ifdef DEBUG_VGA_REG
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printf("vga: write SR%x = 0x%02x\n", s->sr_index, val);
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#endif
|
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s->sr[s->sr_index] = val & sr_mask[s->sr_index]; |
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break;
|
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case 0x3c7: |
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s->dac_read_index = val; |
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s->dac_sub_index = 0;
|
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s->dac_state = 3;
|
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break;
|
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case 0x3c8: |
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s->dac_write_index = val; |
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s->dac_sub_index = 0;
|
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s->dac_state = 0;
|
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break;
|
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case 0x3c9: |
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s->dac_cache[s->dac_sub_index] = val; |
| 322 |
if (++s->dac_sub_index == 3) { |
| 323 |
memcpy(&s->palette[s->dac_write_index * 3], s->dac_cache, 3); |
| 324 |
s->dac_sub_index = 0;
|
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s->dac_write_index++; |
| 326 |
} |
| 327 |
break;
|
| 328 |
case 0x3ce: |
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s->gr_index = val & 0x0f;
|
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break;
|
| 331 |
case 0x3cf: |
| 332 |
#ifdef DEBUG_VGA_REG
|
| 333 |
printf("vga: write GR%x = 0x%02x\n", s->gr_index, val);
|
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#endif
|
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s->gr[s->gr_index] = val & gr_mask[s->gr_index]; |
| 336 |
break;
|
| 337 |
case 0x3b4: |
| 338 |
case 0x3d4: |
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s->cr_index = val; |
| 340 |
break;
|
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case 0x3b5: |
| 342 |
case 0x3d5: |
| 343 |
#ifdef DEBUG_VGA_REG
|
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printf("vga: write CR%x = 0x%02x\n", s->cr_index, val);
|
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#endif
|
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/* handle CR0-7 protection */
|
| 347 |
if ((s->cr[0x11] & 0x80) && s->cr_index <= 7) { |
| 348 |
/* can always write bit 4 of CR7 */
|
| 349 |
if (s->cr_index == 7) |
| 350 |
s->cr[7] = (s->cr[7] & ~0x10) | (val & 0x10); |
| 351 |
return;
|
| 352 |
} |
| 353 |
switch(s->cr_index) {
|
| 354 |
case 0x01: /* horizontal display end */ |
| 355 |
case 0x07: |
| 356 |
case 0x09: |
| 357 |
case 0x0c: |
| 358 |
case 0x0d: |
| 359 |
case 0x12: /* veritcal display end */ |
| 360 |
s->cr[s->cr_index] = val; |
| 361 |
break;
|
| 362 |
|
| 363 |
#ifdef CONFIG_S3VGA
|
| 364 |
/* S3 registers */
|
| 365 |
case 0x2d: |
| 366 |
case 0x2e: |
| 367 |
case 0x2f: |
| 368 |
case 0x30: |
| 369 |
/* chip ID, cannot write */
|
| 370 |
break;
|
| 371 |
case 0x31: |
| 372 |
/* update start address */
|
| 373 |
{
|
| 374 |
int v;
|
| 375 |
s->cr[s->cr_index] = val; |
| 376 |
v = (val >> 4) & 3; |
| 377 |
s->cr[0x69] = (s->cr[69] & ~0x03) | v; |
| 378 |
} |
| 379 |
break;
|
| 380 |
case 0x51: |
| 381 |
/* update start address */
|
| 382 |
{
|
| 383 |
int v;
|
| 384 |
s->cr[s->cr_index] = val; |
| 385 |
v = val & 3;
|
| 386 |
s->cr[0x69] = (s->cr[69] & ~0x0c) | (v << 2); |
| 387 |
} |
| 388 |
break;
|
| 389 |
#endif
|
| 390 |
default:
|
| 391 |
s->cr[s->cr_index] = val; |
| 392 |
break;
|
| 393 |
} |
| 394 |
#ifdef DEBUG_S3
|
| 395 |
if (s->cr_index >= 0x20) |
| 396 |
printf("S3: CR write index=0x%x val=0x%x\n",
|
| 397 |
s->cr_index, val); |
| 398 |
#endif
|
| 399 |
break;
|
| 400 |
case 0x3ba: |
| 401 |
case 0x3da: |
| 402 |
s->fcr = val & 0x10;
|
| 403 |
break;
|
| 404 |
} |
| 405 |
} |
| 406 |
|
| 407 |
#ifdef CONFIG_BOCHS_VBE
|
| 408 |
static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr) |
| 409 |
{
|
| 410 |
VGAState *s = opaque; |
| 411 |
uint32_t val; |
| 412 |
val = s->vbe_index; |
| 413 |
return val;
|
| 414 |
} |
| 415 |
|
| 416 |
static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr) |
| 417 |
{
|
| 418 |
VGAState *s = opaque; |
| 419 |
uint32_t val; |
| 420 |
|
| 421 |
if (s->vbe_index <= VBE_DISPI_INDEX_NB)
|
| 422 |
val = s->vbe_regs[s->vbe_index]; |
| 423 |
else
|
| 424 |
val = 0;
|
| 425 |
#ifdef DEBUG_BOCHS_VBE
|
| 426 |
printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
|
| 427 |
#endif
|
| 428 |
return val;
|
| 429 |
} |
| 430 |
|
| 431 |
static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val) |
| 432 |
{
|
| 433 |
VGAState *s = opaque; |
| 434 |
s->vbe_index = val; |
| 435 |
} |
| 436 |
|
| 437 |
static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) |
| 438 |
{
|
| 439 |
VGAState *s = opaque; |
| 440 |
|
| 441 |
if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
|
| 442 |
#ifdef DEBUG_BOCHS_VBE
|
| 443 |
printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
|
| 444 |
#endif
|
| 445 |
switch(s->vbe_index) {
|
| 446 |
case VBE_DISPI_INDEX_ID:
|
| 447 |
if (val == VBE_DISPI_ID0 ||
|
| 448 |
val == VBE_DISPI_ID1 || |
| 449 |
val == VBE_DISPI_ID2) {
|
| 450 |
s->vbe_regs[s->vbe_index] = val; |
| 451 |
} |
| 452 |
break;
|
| 453 |
case VBE_DISPI_INDEX_XRES:
|
| 454 |
if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) { |
| 455 |
s->vbe_regs[s->vbe_index] = val; |
| 456 |
} |
| 457 |
break;
|
| 458 |
case VBE_DISPI_INDEX_YRES:
|
| 459 |
if (val <= VBE_DISPI_MAX_YRES) {
|
| 460 |
s->vbe_regs[s->vbe_index] = val; |
| 461 |
} |
| 462 |
break;
|
| 463 |
case VBE_DISPI_INDEX_BPP:
|
| 464 |
if (val == 0) |
| 465 |
val = 8;
|
| 466 |
if (val == 4 || val == 8 || val == 15 || |
| 467 |
val == 16 || val == 24 || val == 32) { |
| 468 |
s->vbe_regs[s->vbe_index] = val; |
| 469 |
} |
| 470 |
break;
|
| 471 |
case VBE_DISPI_INDEX_BANK:
|
| 472 |
val &= s->vbe_bank_mask; |
| 473 |
s->vbe_regs[s->vbe_index] = val; |
| 474 |
s->bank_offset = (val << 16);
|
| 475 |
break;
|
| 476 |
case VBE_DISPI_INDEX_ENABLE:
|
| 477 |
if (val & VBE_DISPI_ENABLED) {
|
| 478 |
int h, shift_control;
|
| 479 |
|
| 480 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = |
| 481 |
s->vbe_regs[VBE_DISPI_INDEX_XRES]; |
| 482 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = |
| 483 |
s->vbe_regs[VBE_DISPI_INDEX_YRES]; |
| 484 |
s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
|
| 485 |
s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
|
| 486 |
|
| 487 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
| 488 |
s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
|
| 489 |
else
|
| 490 |
s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] * |
| 491 |
((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
| 492 |
s->vbe_start_addr = 0;
|
| 493 |
|
| 494 |
/* clear the screen (should be done in BIOS) */
|
| 495 |
if (!(val & VBE_DISPI_NOCLEARMEM)) {
|
| 496 |
memset(s->vram_ptr, 0,
|
| 497 |
s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset); |
| 498 |
} |
| 499 |
|
| 500 |
/* we initialize the VGA graphic mode (should be done
|
| 501 |
in BIOS) */
|
| 502 |
s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */ |
| 503 |
s->cr[0x17] |= 3; /* no CGA modes */ |
| 504 |
s->cr[0x13] = s->vbe_line_offset >> 3; |
| 505 |
/* width */
|
| 506 |
s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1; |
| 507 |
/* height */
|
| 508 |
h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
|
| 509 |
s->cr[0x12] = h;
|
| 510 |
s->cr[0x07] = (s->cr[0x07] & ~0x42) | |
| 511 |
((h >> 7) & 0x02) | ((h >> 3) & 0x40); |
| 512 |
/* line compare to 1023 */
|
| 513 |
s->cr[0x18] = 0xff; |
| 514 |
s->cr[0x07] |= 0x10; |
| 515 |
s->cr[0x09] |= 0x40; |
| 516 |
|
| 517 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { |
| 518 |
shift_control = 0;
|
| 519 |
s->sr[0x01] &= ~8; /* no double line */ |
| 520 |
} else {
|
| 521 |
shift_control = 2;
|
| 522 |
s->sr[4] |= 0x08; /* set chain 4 mode */ |
| 523 |
s->sr[2] |= 0x0f; /* activate all planes */ |
| 524 |
} |
| 525 |
s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5); |
| 526 |
s->cr[0x09] &= ~0x9f; /* no double scan */ |
| 527 |
} else {
|
| 528 |
/* XXX: the bios should do that */
|
| 529 |
s->bank_offset = 0;
|
| 530 |
} |
| 531 |
s->vbe_regs[s->vbe_index] = val; |
| 532 |
break;
|
| 533 |
case VBE_DISPI_INDEX_VIRT_WIDTH:
|
| 534 |
{
|
| 535 |
int w, h, line_offset;
|
| 536 |
|
| 537 |
if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
|
| 538 |
return;
|
| 539 |
w = val; |
| 540 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
| 541 |
line_offset = w >> 1;
|
| 542 |
else
|
| 543 |
line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
| 544 |
h = s->vram_size / line_offset; |
| 545 |
/* XXX: support weird bochs semantics ? */
|
| 546 |
if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
|
| 547 |
return;
|
| 548 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w; |
| 549 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h; |
| 550 |
s->vbe_line_offset = line_offset; |
| 551 |
} |
| 552 |
break;
|
| 553 |
case VBE_DISPI_INDEX_X_OFFSET:
|
| 554 |
case VBE_DISPI_INDEX_Y_OFFSET:
|
| 555 |
{
|
| 556 |
int x;
|
| 557 |
s->vbe_regs[s->vbe_index] = val; |
| 558 |
s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET]; |
| 559 |
x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET]; |
| 560 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
| 561 |
s->vbe_start_addr += x >> 1;
|
| 562 |
else
|
| 563 |
s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
| 564 |
s->vbe_start_addr >>= 2;
|
| 565 |
} |
| 566 |
break;
|
| 567 |
default:
|
| 568 |
break;
|
| 569 |
} |
| 570 |
} |
| 571 |
} |
| 572 |
#endif
|
| 573 |
|
| 574 |
/* called for accesses between 0xa0000 and 0xc0000 */
|
| 575 |
uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
|
| 576 |
{
|
| 577 |
VGAState *s = opaque; |
| 578 |
int memory_map_mode, plane;
|
| 579 |
uint32_t ret; |
| 580 |
|
| 581 |
/* convert to VGA memory offset */
|
| 582 |
memory_map_mode = (s->gr[6] >> 2) & 3; |
| 583 |
addr &= 0x1ffff;
|
| 584 |
switch(memory_map_mode) {
|
| 585 |
case 0: |
| 586 |
break;
|
| 587 |
case 1: |
| 588 |
if (addr >= 0x10000) |
| 589 |
return 0xff; |
| 590 |
addr += s->bank_offset; |
| 591 |
break;
|
| 592 |
case 2: |
| 593 |
addr -= 0x10000;
|
| 594 |
if (addr >= 0x8000) |
| 595 |
return 0xff; |
| 596 |
break;
|
| 597 |
default:
|
| 598 |
case 3: |
| 599 |
addr -= 0x18000;
|
| 600 |
if (addr >= 0x8000) |
| 601 |
return 0xff; |
| 602 |
break;
|
| 603 |
} |
| 604 |
|
| 605 |
if (s->sr[4] & 0x08) { |
| 606 |
/* chain 4 mode : simplest access */
|
| 607 |
ret = s->vram_ptr[addr]; |
| 608 |
} else if (s->gr[5] & 0x10) { |
| 609 |
/* odd/even mode (aka text mode mapping) */
|
| 610 |
plane = (s->gr[4] & 2) | (addr & 1); |
| 611 |
ret = s->vram_ptr[((addr & ~1) << 1) | plane]; |
| 612 |
} else {
|
| 613 |
/* standard VGA latched access */
|
| 614 |
s->latch = ((uint32_t *)s->vram_ptr)[addr]; |
| 615 |
|
| 616 |
if (!(s->gr[5] & 0x08)) { |
| 617 |
/* read mode 0 */
|
| 618 |
plane = s->gr[4];
|
| 619 |
ret = GET_PLANE(s->latch, plane); |
| 620 |
} else {
|
| 621 |
/* read mode 1 */
|
| 622 |
ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]]; |
| 623 |
ret |= ret >> 16;
|
| 624 |
ret |= ret >> 8;
|
| 625 |
ret = (~ret) & 0xff;
|
| 626 |
} |
| 627 |
} |
| 628 |
return ret;
|
| 629 |
} |
| 630 |
|
| 631 |
static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr) |
| 632 |
{
|
| 633 |
uint32_t v; |
| 634 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 635 |
v = vga_mem_readb(opaque, addr) << 8;
|
| 636 |
v |= vga_mem_readb(opaque, addr + 1);
|
| 637 |
#else
|
| 638 |
v = vga_mem_readb(opaque, addr); |
| 639 |
v |= vga_mem_readb(opaque, addr + 1) << 8; |
| 640 |
#endif
|
| 641 |
return v;
|
| 642 |
} |
| 643 |
|
| 644 |
static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr) |
| 645 |
{
|
| 646 |
uint32_t v; |
| 647 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 648 |
v = vga_mem_readb(opaque, addr) << 24;
|
| 649 |
v |= vga_mem_readb(opaque, addr + 1) << 16; |
| 650 |
v |= vga_mem_readb(opaque, addr + 2) << 8; |
| 651 |
v |= vga_mem_readb(opaque, addr + 3);
|
| 652 |
#else
|
| 653 |
v = vga_mem_readb(opaque, addr); |
| 654 |
v |= vga_mem_readb(opaque, addr + 1) << 8; |
| 655 |
v |= vga_mem_readb(opaque, addr + 2) << 16; |
| 656 |
v |= vga_mem_readb(opaque, addr + 3) << 24; |
| 657 |
#endif
|
| 658 |
return v;
|
| 659 |
} |
| 660 |
|
| 661 |
/* called for accesses between 0xa0000 and 0xc0000 */
|
| 662 |
void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 663 |
{
|
| 664 |
VGAState *s = opaque; |
| 665 |
int memory_map_mode, plane, write_mode, b, func_select, mask;
|
| 666 |
uint32_t write_mask, bit_mask, set_mask; |
| 667 |
|
| 668 |
#ifdef DEBUG_VGA_MEM
|
| 669 |
printf("vga: [0x%x] = 0x%02x\n", addr, val);
|
| 670 |
#endif
|
| 671 |
/* convert to VGA memory offset */
|
| 672 |
memory_map_mode = (s->gr[6] >> 2) & 3; |
| 673 |
addr &= 0x1ffff;
|
| 674 |
switch(memory_map_mode) {
|
| 675 |
case 0: |
| 676 |
break;
|
| 677 |
case 1: |
| 678 |
if (addr >= 0x10000) |
| 679 |
return;
|
| 680 |
addr += s->bank_offset; |
| 681 |
break;
|
| 682 |
case 2: |
| 683 |
addr -= 0x10000;
|
| 684 |
if (addr >= 0x8000) |
| 685 |
return;
|
| 686 |
break;
|
| 687 |
default:
|
| 688 |
case 3: |
| 689 |
addr -= 0x18000;
|
| 690 |
if (addr >= 0x8000) |
| 691 |
return;
|
| 692 |
break;
|
| 693 |
} |
| 694 |
|
| 695 |
if (s->sr[4] & 0x08) { |
| 696 |
/* chain 4 mode : simplest access */
|
| 697 |
plane = addr & 3;
|
| 698 |
mask = (1 << plane);
|
| 699 |
if (s->sr[2] & mask) { |
| 700 |
s->vram_ptr[addr] = val; |
| 701 |
#ifdef DEBUG_VGA_MEM
|
| 702 |
printf("vga: chain4: [0x%x]\n", addr);
|
| 703 |
#endif
|
| 704 |
s->plane_updated |= mask; /* only used to detect font change */
|
| 705 |
cpu_physical_memory_set_dirty(s->vram_offset + addr); |
| 706 |
} |
| 707 |
} else if (s->gr[5] & 0x10) { |
| 708 |
/* odd/even mode (aka text mode mapping) */
|
| 709 |
plane = (s->gr[4] & 2) | (addr & 1); |
| 710 |
mask = (1 << plane);
|
| 711 |
if (s->sr[2] & mask) { |
| 712 |
addr = ((addr & ~1) << 1) | plane; |
| 713 |
s->vram_ptr[addr] = val; |
| 714 |
#ifdef DEBUG_VGA_MEM
|
| 715 |
printf("vga: odd/even: [0x%x]\n", addr);
|
| 716 |
#endif
|
| 717 |
s->plane_updated |= mask; /* only used to detect font change */
|
| 718 |
cpu_physical_memory_set_dirty(s->vram_offset + addr); |
| 719 |
} |
| 720 |
} else {
|
| 721 |
/* standard VGA latched access */
|
| 722 |
write_mode = s->gr[5] & 3; |
| 723 |
switch(write_mode) {
|
| 724 |
default:
|
| 725 |
case 0: |
| 726 |
/* rotate */
|
| 727 |
b = s->gr[3] & 7; |
| 728 |
val = ((val >> b) | (val << (8 - b))) & 0xff; |
| 729 |
val |= val << 8;
|
| 730 |
val |= val << 16;
|
| 731 |
|
| 732 |
/* apply set/reset mask */
|
| 733 |
set_mask = mask16[s->gr[1]];
|
| 734 |
val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
|
| 735 |
bit_mask = s->gr[8];
|
| 736 |
break;
|
| 737 |
case 1: |
| 738 |
val = s->latch; |
| 739 |
goto do_write;
|
| 740 |
case 2: |
| 741 |
val = mask16[val & 0x0f];
|
| 742 |
bit_mask = s->gr[8];
|
| 743 |
break;
|
| 744 |
case 3: |
| 745 |
/* rotate */
|
| 746 |
b = s->gr[3] & 7; |
| 747 |
val = (val >> b) | (val << (8 - b));
|
| 748 |
|
| 749 |
bit_mask = s->gr[8] & val;
|
| 750 |
val = mask16[s->gr[0]];
|
| 751 |
break;
|
| 752 |
} |
| 753 |
|
| 754 |
/* apply logical operation */
|
| 755 |
func_select = s->gr[3] >> 3; |
| 756 |
switch(func_select) {
|
| 757 |
case 0: |
| 758 |
default:
|
| 759 |
/* nothing to do */
|
| 760 |
break;
|
| 761 |
case 1: |
| 762 |
/* and */
|
| 763 |
val &= s->latch; |
| 764 |
break;
|
| 765 |
case 2: |
| 766 |
/* or */
|
| 767 |
val |= s->latch; |
| 768 |
break;
|
| 769 |
case 3: |
| 770 |
/* xor */
|
| 771 |
val ^= s->latch; |
| 772 |
break;
|
| 773 |
} |
| 774 |
|
| 775 |
/* apply bit mask */
|
| 776 |
bit_mask |= bit_mask << 8;
|
| 777 |
bit_mask |= bit_mask << 16;
|
| 778 |
val = (val & bit_mask) | (s->latch & ~bit_mask); |
| 779 |
|
| 780 |
do_write:
|
| 781 |
/* mask data according to sr[2] */
|
| 782 |
mask = s->sr[2];
|
| 783 |
s->plane_updated |= mask; /* only used to detect font change */
|
| 784 |
write_mask = mask16[mask]; |
| 785 |
((uint32_t *)s->vram_ptr)[addr] = |
| 786 |
(((uint32_t *)s->vram_ptr)[addr] & ~write_mask) | |
| 787 |
(val & write_mask); |
| 788 |
#ifdef DEBUG_VGA_MEM
|
| 789 |
printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
|
| 790 |
addr * 4, write_mask, val);
|
| 791 |
#endif
|
| 792 |
cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
|
| 793 |
} |
| 794 |
} |
| 795 |
|
| 796 |
static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 797 |
{
|
| 798 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 799 |
vga_mem_writeb(opaque, addr, (val >> 8) & 0xff); |
| 800 |
vga_mem_writeb(opaque, addr + 1, val & 0xff); |
| 801 |
#else
|
| 802 |
vga_mem_writeb(opaque, addr, val & 0xff);
|
| 803 |
vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); |
| 804 |
#endif
|
| 805 |
} |
| 806 |
|
| 807 |
static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
| 808 |
{
|
| 809 |
#ifdef TARGET_WORDS_BIGENDIAN
|
| 810 |
vga_mem_writeb(opaque, addr, (val >> 24) & 0xff); |
| 811 |
vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff); |
| 812 |
vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff); |
| 813 |
vga_mem_writeb(opaque, addr + 3, val & 0xff); |
| 814 |
#else
|
| 815 |
vga_mem_writeb(opaque, addr, val & 0xff);
|
| 816 |
vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); |
| 817 |
vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff); |
| 818 |
vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff); |
| 819 |
#endif
|
| 820 |
} |
| 821 |
|
| 822 |
typedef void vga_draw_glyph8_func(uint8_t *d, int linesize, |
| 823 |
const uint8_t *font_ptr, int h, |
| 824 |
uint32_t fgcol, uint32_t bgcol); |
| 825 |
typedef void vga_draw_glyph9_func(uint8_t *d, int linesize, |
| 826 |
const uint8_t *font_ptr, int h, |
| 827 |
uint32_t fgcol, uint32_t bgcol, int dup9);
|
| 828 |
typedef void vga_draw_line_func(VGAState *s1, uint8_t *d, |
| 829 |
const uint8_t *s, int width); |
| 830 |
|
| 831 |
static inline unsigned int rgb_to_pixel8(unsigned int r, unsigned int g, unsigned b) |
| 832 |
{
|
| 833 |
return ((r >> 5) << 5) | ((g >> 5) << 2) | (b >> 6); |
| 834 |
} |
| 835 |
|
| 836 |
static inline unsigned int rgb_to_pixel15(unsigned int r, unsigned int g, unsigned b) |
| 837 |
{
|
| 838 |
return ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3); |
| 839 |
} |
| 840 |
|
| 841 |
static inline unsigned int rgb_to_pixel16(unsigned int r, unsigned int g, unsigned b) |
| 842 |
{
|
| 843 |
return ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3); |
| 844 |
} |
| 845 |
|
| 846 |
static inline unsigned int rgb_to_pixel32(unsigned int r, unsigned int g, unsigned b) |
| 847 |
{
|
| 848 |
return (r << 16) | (g << 8) | b; |
| 849 |
} |
| 850 |
|
| 851 |
#define DEPTH 8 |
| 852 |
#include "vga_template.h" |
| 853 |
|
| 854 |
#define DEPTH 15 |
| 855 |
#include "vga_template.h" |
| 856 |
|
| 857 |
#define DEPTH 16 |
| 858 |
#include "vga_template.h" |
| 859 |
|
| 860 |
#define DEPTH 32 |
| 861 |
#include "vga_template.h" |
| 862 |
|
| 863 |
static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b) |
| 864 |
{
|
| 865 |
unsigned int col; |
| 866 |
col = rgb_to_pixel8(r, g, b); |
| 867 |
col |= col << 8;
|
| 868 |
col |= col << 16;
|
| 869 |
return col;
|
| 870 |
} |
| 871 |
|
| 872 |
static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b) |
| 873 |
{
|
| 874 |
unsigned int col; |
| 875 |
col = rgb_to_pixel15(r, g, b); |
| 876 |
col |= col << 16;
|
| 877 |
return col;
|
| 878 |
} |
| 879 |
|
| 880 |
static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b) |
| 881 |
{
|
| 882 |
unsigned int col; |
| 883 |
col = rgb_to_pixel16(r, g, b); |
| 884 |
col |= col << 16;
|
| 885 |
return col;
|
| 886 |
} |
| 887 |
|
| 888 |
static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b) |
| 889 |
{
|
| 890 |
unsigned int col; |
| 891 |
col = rgb_to_pixel32(r, g, b); |
| 892 |
return col;
|
| 893 |
} |
| 894 |
|
| 895 |
/* return true if the palette was modified */
|
| 896 |
static int update_palette16(VGAState *s) |
| 897 |
{
|
| 898 |
int full_update, i;
|
| 899 |
uint32_t v, col, *palette; |
| 900 |
|
| 901 |
full_update = 0;
|
| 902 |
palette = s->last_palette; |
| 903 |
for(i = 0; i < 16; i++) { |
| 904 |
v = s->ar[i]; |
| 905 |
if (s->ar[0x10] & 0x80) |
| 906 |
v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf); |
| 907 |
else
|
| 908 |
v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f); |
| 909 |
v = v * 3;
|
| 910 |
col = s->rgb_to_pixel(c6_to_8(s->palette[v]), |
| 911 |
c6_to_8(s->palette[v + 1]),
|
| 912 |
c6_to_8(s->palette[v + 2]));
|
| 913 |
if (col != palette[i]) {
|
| 914 |
full_update = 1;
|
| 915 |
palette[i] = col; |
| 916 |
} |
| 917 |
} |
| 918 |
return full_update;
|
| 919 |
} |
| 920 |
|
| 921 |
/* return true if the palette was modified */
|
| 922 |
static int update_palette256(VGAState *s) |
| 923 |
{
|
| 924 |
int full_update, i;
|
| 925 |
uint32_t v, col, *palette; |
| 926 |
|
| 927 |
full_update = 0;
|
| 928 |
palette = s->last_palette; |
| 929 |
v = 0;
|
| 930 |
for(i = 0; i < 256; i++) { |
| 931 |
col = s->rgb_to_pixel(c6_to_8(s->palette[v]), |
| 932 |
c6_to_8(s->palette[v + 1]),
|
| 933 |
c6_to_8(s->palette[v + 2]));
|
| 934 |
if (col != palette[i]) {
|
| 935 |
full_update = 1;
|
| 936 |
palette[i] = col; |
| 937 |
} |
| 938 |
v += 3;
|
| 939 |
} |
| 940 |
return full_update;
|
| 941 |
} |
| 942 |
|
| 943 |
static void vga_get_offsets(VGAState *s, |
| 944 |
uint32_t *pline_offset, |
| 945 |
uint32_t *pstart_addr) |
| 946 |
{
|
| 947 |
uint32_t start_addr, line_offset; |
| 948 |
#ifdef CONFIG_BOCHS_VBE
|
| 949 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
| 950 |
line_offset = s->vbe_line_offset; |
| 951 |
start_addr = s->vbe_start_addr; |
| 952 |
} else
|
| 953 |
#endif
|
| 954 |
{
|
| 955 |
/* compute line_offset in bytes */
|
| 956 |
line_offset = s->cr[0x13];
|
| 957 |
#ifdef CONFIG_S3VGA
|
| 958 |
{
|
| 959 |
uinr32_t v; |
| 960 |
v = (s->cr[0x51] >> 4) & 3; /* S3 extension */ |
| 961 |
if (v == 0) |
| 962 |
v = (s->cr[0x43] >> 2) & 1; /* S3 extension */ |
| 963 |
line_offset |= (v << 8);
|
| 964 |
} |
| 965 |
#endif
|
| 966 |
line_offset <<= 3;
|
| 967 |
|
| 968 |
/* starting address */
|
| 969 |
start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8); |
| 970 |
#ifdef CONFIG_S3VGA
|
| 971 |
start_addr |= (s->cr[0x69] & 0x1f) << 16; /* S3 extension */ |
| 972 |
#endif
|
| 973 |
} |
| 974 |
*pline_offset = line_offset; |
| 975 |
*pstart_addr = start_addr; |
| 976 |
} |
| 977 |
|
| 978 |
/* update start_addr and line_offset. Return TRUE if modified */
|
| 979 |
static int update_basic_params(VGAState *s) |
| 980 |
{
|
| 981 |
int full_update;
|
| 982 |
uint32_t start_addr, line_offset, line_compare; |
| 983 |
|
| 984 |
full_update = 0;
|
| 985 |
|
| 986 |
s->get_offsets(s, &line_offset, &start_addr); |
| 987 |
/* line compare */
|
| 988 |
line_compare = s->cr[0x18] |
|
| 989 |
((s->cr[0x07] & 0x10) << 4) | |
| 990 |
((s->cr[0x09] & 0x40) << 3); |
| 991 |
|
| 992 |
if (line_offset != s->line_offset ||
|
| 993 |
start_addr != s->start_addr || |
| 994 |
line_compare != s->line_compare) {
|
| 995 |
s->line_offset = line_offset; |
| 996 |
s->start_addr = start_addr; |
| 997 |
s->line_compare = line_compare; |
| 998 |
full_update = 1;
|
| 999 |
} |
| 1000 |
return full_update;
|
| 1001 |
} |
| 1002 |
|
| 1003 |
static inline int get_depth_index(int depth) |
| 1004 |
{
|
| 1005 |
switch(depth) {
|
| 1006 |
default:
|
| 1007 |
case 8: |
| 1008 |
return 0; |
| 1009 |
case 15: |
| 1010 |
return 1; |
| 1011 |
case 16: |
| 1012 |
return 2; |
| 1013 |
case 32: |
| 1014 |
return 3; |
| 1015 |
} |
| 1016 |
} |
| 1017 |
|
| 1018 |
static vga_draw_glyph8_func *vga_draw_glyph8_table[4] = { |
| 1019 |
vga_draw_glyph8_8, |
| 1020 |
vga_draw_glyph8_16, |
| 1021 |
vga_draw_glyph8_16, |
| 1022 |
vga_draw_glyph8_32, |
| 1023 |
}; |
| 1024 |
|
| 1025 |
static vga_draw_glyph8_func *vga_draw_glyph16_table[4] = { |
| 1026 |
vga_draw_glyph16_8, |
| 1027 |
vga_draw_glyph16_16, |
| 1028 |
vga_draw_glyph16_16, |
| 1029 |
vga_draw_glyph16_32, |
| 1030 |
}; |
| 1031 |
|
| 1032 |
static vga_draw_glyph9_func *vga_draw_glyph9_table[4] = { |
| 1033 |
vga_draw_glyph9_8, |
| 1034 |
vga_draw_glyph9_16, |
| 1035 |
vga_draw_glyph9_16, |
| 1036 |
vga_draw_glyph9_32, |
| 1037 |
}; |
| 1038 |
|
| 1039 |
static const uint8_t cursor_glyph[32 * 4] = { |
| 1040 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1041 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1042 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1043 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1044 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1045 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1046 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1047 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1048 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1049 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1050 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1051 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1052 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1053 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1054 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1055 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
| 1056 |
}; |
| 1057 |
|
| 1058 |
/*
|
| 1059 |
* Text mode update
|
| 1060 |
* Missing:
|
| 1061 |
* - double scan
|
| 1062 |
* - double width
|
| 1063 |
* - underline
|
| 1064 |
* - flashing
|
| 1065 |
*/
|
| 1066 |
static void vga_draw_text(VGAState *s, int full_update) |
| 1067 |
{
|
| 1068 |
int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
|
| 1069 |
int cx_min, cx_max, linesize, x_incr;
|
| 1070 |
uint32_t offset, fgcol, bgcol, v, cursor_offset; |
| 1071 |
uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr; |
| 1072 |
const uint8_t *font_ptr, *font_base[2]; |
| 1073 |
int dup9, line_offset, depth_index;
|
| 1074 |
uint32_t *palette; |
| 1075 |
uint32_t *ch_attr_ptr; |
| 1076 |
vga_draw_glyph8_func *vga_draw_glyph8; |
| 1077 |
vga_draw_glyph9_func *vga_draw_glyph9; |
| 1078 |
|
| 1079 |
full_update |= update_palette16(s); |
| 1080 |
palette = s->last_palette; |
| 1081 |
|
| 1082 |
/* compute font data address (in plane 2) */
|
| 1083 |
v = s->sr[3];
|
| 1084 |
offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2; |
| 1085 |
if (offset != s->font_offsets[0]) { |
| 1086 |
s->font_offsets[0] = offset;
|
| 1087 |
full_update = 1;
|
| 1088 |
} |
| 1089 |
font_base[0] = s->vram_ptr + offset;
|
| 1090 |
|
| 1091 |
offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2; |
| 1092 |
font_base[1] = s->vram_ptr + offset;
|
| 1093 |
if (offset != s->font_offsets[1]) { |
| 1094 |
s->font_offsets[1] = offset;
|
| 1095 |
full_update = 1;
|
| 1096 |
} |
| 1097 |
if (s->plane_updated & (1 << 2)) { |
| 1098 |
/* if the plane 2 was modified since the last display, it
|
| 1099 |
indicates the font may have been modified */
|
| 1100 |
s->plane_updated = 0;
|
| 1101 |
full_update = 1;
|
| 1102 |
} |
| 1103 |
full_update |= update_basic_params(s); |
| 1104 |
|
| 1105 |
line_offset = s->line_offset; |
| 1106 |
s1 = s->vram_ptr + (s->start_addr * 4);
|
| 1107 |
|
| 1108 |
/* total width & height */
|
| 1109 |
cheight = (s->cr[9] & 0x1f) + 1; |
| 1110 |
cw = 8;
|
| 1111 |
if (!(s->sr[1] & 0x01)) |
| 1112 |
cw = 9;
|
| 1113 |
if (s->sr[1] & 0x08) |
| 1114 |
cw = 16; /* NOTE: no 18 pixel wide */ |
| 1115 |
x_incr = cw * ((s->ds->depth + 7) >> 3); |
| 1116 |
width = (s->cr[0x01] + 1); |
| 1117 |
if (s->cr[0x06] == 100) { |
| 1118 |
/* ugly hack for CGA 160x100x16 - explain me the logic */
|
| 1119 |
height = 100;
|
| 1120 |
} else {
|
| 1121 |
height = s->cr[0x12] |
|
| 1122 |
((s->cr[0x07] & 0x02) << 7) | |
| 1123 |
((s->cr[0x07] & 0x40) << 3); |
| 1124 |
height = (height + 1) / cheight;
|
| 1125 |
} |
| 1126 |
if ((height * width) > CH_ATTR_SIZE) {
|
| 1127 |
/* better than nothing: exit if transient size is too big */
|
| 1128 |
return;
|
| 1129 |
} |
| 1130 |
|
| 1131 |
if (width != s->last_width || height != s->last_height ||
|
| 1132 |
cw != s->last_cw || cheight != s->last_ch) {
|
| 1133 |
s->last_scr_width = width * cw; |
| 1134 |
s->last_scr_height = height * cheight; |
| 1135 |
dpy_resize(s->ds, s->last_scr_width, s->last_scr_height); |
| 1136 |
s->last_width = width; |
| 1137 |
s->last_height = height; |
| 1138 |
s->last_ch = cheight; |
| 1139 |
s->last_cw = cw; |
| 1140 |
full_update = 1;
|
| 1141 |
} |
| 1142 |
cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr; |
| 1143 |
if (cursor_offset != s->cursor_offset ||
|
| 1144 |
s->cr[0xa] != s->cursor_start ||
|
| 1145 |
s->cr[0xb] != s->cursor_end) {
|
| 1146 |
/* if the cursor position changed, we update the old and new
|
| 1147 |
chars */
|
| 1148 |
if (s->cursor_offset < CH_ATTR_SIZE)
|
| 1149 |
s->last_ch_attr[s->cursor_offset] = -1;
|
| 1150 |
if (cursor_offset < CH_ATTR_SIZE)
|
| 1151 |
s->last_ch_attr[cursor_offset] = -1;
|
| 1152 |
s->cursor_offset = cursor_offset; |
| 1153 |
s->cursor_start = s->cr[0xa];
|
| 1154 |
s->cursor_end = s->cr[0xb];
|
| 1155 |
} |
| 1156 |
cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
|
| 1157 |
|
| 1158 |
depth_index = get_depth_index(s->ds->depth); |
| 1159 |
if (cw == 16) |
| 1160 |
vga_draw_glyph8 = vga_draw_glyph16_table[depth_index]; |
| 1161 |
else
|
| 1162 |
vga_draw_glyph8 = vga_draw_glyph8_table[depth_index]; |
| 1163 |
vga_draw_glyph9 = vga_draw_glyph9_table[depth_index]; |
| 1164 |
|
| 1165 |
dest = s->ds->data; |
| 1166 |
linesize = s->ds->linesize; |
| 1167 |
ch_attr_ptr = s->last_ch_attr; |
| 1168 |
for(cy = 0; cy < height; cy++) { |
| 1169 |
d1 = dest; |
| 1170 |
src = s1; |
| 1171 |
cx_min = width; |
| 1172 |
cx_max = -1;
|
| 1173 |
for(cx = 0; cx < width; cx++) { |
| 1174 |
ch_attr = *(uint16_t *)src; |
| 1175 |
if (full_update || ch_attr != *ch_attr_ptr) {
|
| 1176 |
if (cx < cx_min)
|
| 1177 |
cx_min = cx; |
| 1178 |
if (cx > cx_max)
|
| 1179 |
cx_max = cx; |
| 1180 |
*ch_attr_ptr = ch_attr; |
| 1181 |
#ifdef WORDS_BIGENDIAN
|
| 1182 |
ch = ch_attr >> 8;
|
| 1183 |
cattr = ch_attr & 0xff;
|
| 1184 |
#else
|
| 1185 |
ch = ch_attr & 0xff;
|
| 1186 |
cattr = ch_attr >> 8;
|
| 1187 |
#endif
|
| 1188 |
font_ptr = font_base[(cattr >> 3) & 1]; |
| 1189 |
font_ptr += 32 * 4 * ch; |
| 1190 |
bgcol = palette[cattr >> 4];
|
| 1191 |
fgcol = palette[cattr & 0x0f];
|
| 1192 |
if (cw != 9) { |
| 1193 |
vga_draw_glyph8(d1, linesize, |
| 1194 |
font_ptr, cheight, fgcol, bgcol); |
| 1195 |
} else {
|
| 1196 |
dup9 = 0;
|
| 1197 |
if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04)) |
| 1198 |
dup9 = 1;
|
| 1199 |
vga_draw_glyph9(d1, linesize, |
| 1200 |
font_ptr, cheight, fgcol, bgcol, dup9); |
| 1201 |
} |
| 1202 |
if (src == cursor_ptr &&
|
| 1203 |
!(s->cr[0x0a] & 0x20)) { |
| 1204 |
int line_start, line_last, h;
|
| 1205 |
/* draw the cursor */
|
| 1206 |
line_start = s->cr[0x0a] & 0x1f; |
| 1207 |
line_last = s->cr[0x0b] & 0x1f; |
| 1208 |
/* XXX: check that */
|
| 1209 |
if (line_last > cheight - 1) |
| 1210 |
line_last = cheight - 1;
|
| 1211 |
if (line_last >= line_start && line_start < cheight) {
|
| 1212 |
h = line_last - line_start + 1;
|
| 1213 |
d = d1 + linesize * line_start; |
| 1214 |
if (cw != 9) { |
| 1215 |
vga_draw_glyph8(d, linesize, |
| 1216 |
cursor_glyph, h, fgcol, bgcol); |
| 1217 |
} else {
|
| 1218 |
vga_draw_glyph9(d, linesize, |
| 1219 |
cursor_glyph, h, fgcol, bgcol, 1);
|
| 1220 |
} |
| 1221 |
} |
| 1222 |
} |
| 1223 |
} |
| 1224 |
d1 += x_incr; |
| 1225 |
src += 4;
|
| 1226 |
ch_attr_ptr++; |
| 1227 |
} |
| 1228 |
if (cx_max != -1) { |
| 1229 |
dpy_update(s->ds, cx_min * cw, cy * cheight, |
| 1230 |
(cx_max - cx_min + 1) * cw, cheight);
|
| 1231 |
} |
| 1232 |
dest += linesize * cheight; |
| 1233 |
s1 += line_offset; |
| 1234 |
} |
| 1235 |
} |
| 1236 |
|
| 1237 |
enum {
|
| 1238 |
VGA_DRAW_LINE2, |
| 1239 |
VGA_DRAW_LINE2D2, |
| 1240 |
VGA_DRAW_LINE4, |
| 1241 |
VGA_DRAW_LINE4D2, |
| 1242 |
VGA_DRAW_LINE8D2, |
| 1243 |
VGA_DRAW_LINE8, |
| 1244 |
VGA_DRAW_LINE15, |
| 1245 |
VGA_DRAW_LINE16, |
| 1246 |
VGA_DRAW_LINE24, |
| 1247 |
VGA_DRAW_LINE32, |
| 1248 |
VGA_DRAW_LINE_NB, |
| 1249 |
}; |
| 1250 |
|
| 1251 |
static vga_draw_line_func *vga_draw_line_table[4 * VGA_DRAW_LINE_NB] = { |
| 1252 |
vga_draw_line2_8, |
| 1253 |
vga_draw_line2_16, |
| 1254 |
vga_draw_line2_16, |
| 1255 |
vga_draw_line2_32, |
| 1256 |
|
| 1257 |
vga_draw_line2d2_8, |
| 1258 |
vga_draw_line2d2_16, |
| 1259 |
vga_draw_line2d2_16, |
| 1260 |
vga_draw_line2d2_32, |
| 1261 |
|
| 1262 |
vga_draw_line4_8, |
| 1263 |
vga_draw_line4_16, |
| 1264 |
vga_draw_line4_16, |
| 1265 |
vga_draw_line4_32, |
| 1266 |
|
| 1267 |
vga_draw_line4d2_8, |
| 1268 |
vga_draw_line4d2_16, |
| 1269 |
vga_draw_line4d2_16, |
| 1270 |
vga_draw_line4d2_32, |
| 1271 |
|
| 1272 |
vga_draw_line8d2_8, |
| 1273 |
vga_draw_line8d2_16, |
| 1274 |
vga_draw_line8d2_16, |
| 1275 |
vga_draw_line8d2_32, |
| 1276 |
|
| 1277 |
vga_draw_line8_8, |
| 1278 |
vga_draw_line8_16, |
| 1279 |
vga_draw_line8_16, |
| 1280 |
vga_draw_line8_32, |
| 1281 |
|
| 1282 |
vga_draw_line15_8, |
| 1283 |
vga_draw_line15_15, |
| 1284 |
vga_draw_line15_16, |
| 1285 |
vga_draw_line15_32, |
| 1286 |
|
| 1287 |
vga_draw_line16_8, |
| 1288 |
vga_draw_line16_15, |
| 1289 |
vga_draw_line16_16, |
| 1290 |
vga_draw_line16_32, |
| 1291 |
|
| 1292 |
vga_draw_line24_8, |
| 1293 |
vga_draw_line24_15, |
| 1294 |
vga_draw_line24_16, |
| 1295 |
vga_draw_line24_32, |
| 1296 |
|
| 1297 |
vga_draw_line32_8, |
| 1298 |
vga_draw_line32_15, |
| 1299 |
vga_draw_line32_16, |
| 1300 |
vga_draw_line32_32, |
| 1301 |
}; |
| 1302 |
|
| 1303 |
static int vga_get_bpp(VGAState *s) |
| 1304 |
{
|
| 1305 |
int ret;
|
| 1306 |
#ifdef CONFIG_BOCHS_VBE
|
| 1307 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
| 1308 |
ret = s->vbe_regs[VBE_DISPI_INDEX_BPP]; |
| 1309 |
} else
|
| 1310 |
#endif
|
| 1311 |
{
|
| 1312 |
ret = 0;
|
| 1313 |
} |
| 1314 |
return ret;
|
| 1315 |
} |
| 1316 |
|
| 1317 |
static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight) |
| 1318 |
{
|
| 1319 |
int width, height;
|
| 1320 |
|
| 1321 |
width = (s->cr[0x01] + 1) * 8; |
| 1322 |
height = s->cr[0x12] |
|
| 1323 |
((s->cr[0x07] & 0x02) << 7) | |
| 1324 |
((s->cr[0x07] & 0x40) << 3); |
| 1325 |
height = (height + 1);
|
| 1326 |
*pwidth = width; |
| 1327 |
*pheight = height; |
| 1328 |
} |
| 1329 |
|
| 1330 |
void vga_invalidate_scanlines(VGAState *s, int y1, int y2) |
| 1331 |
{
|
| 1332 |
int y;
|
| 1333 |
if (y1 >= VGA_MAX_HEIGHT)
|
| 1334 |
return;
|
| 1335 |
if (y2 >= VGA_MAX_HEIGHT)
|
| 1336 |
y2 = VGA_MAX_HEIGHT; |
| 1337 |
for(y = y1; y < y2; y++) {
|
| 1338 |
s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f); |
| 1339 |
} |
| 1340 |
} |
| 1341 |
|
| 1342 |
/*
|
| 1343 |
* graphic modes
|
| 1344 |
*/
|
| 1345 |
static void vga_draw_graphic(VGAState *s, int full_update) |
| 1346 |
{
|
| 1347 |
int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
|
| 1348 |
int width, height, shift_control, line_offset, page0, page1, bwidth;
|
| 1349 |
int disp_width, multi_scan, multi_run;
|
| 1350 |
uint8_t *d; |
| 1351 |
uint32_t v, addr1, addr; |
| 1352 |
vga_draw_line_func *vga_draw_line; |
| 1353 |
|
| 1354 |
full_update |= update_basic_params(s); |
| 1355 |
|
| 1356 |
s->get_resolution(s, &width, &height); |
| 1357 |
disp_width = width; |
| 1358 |
|
| 1359 |
shift_control = (s->gr[0x05] >> 5) & 3; |
| 1360 |
double_scan = (s->cr[0x09] >> 7); |
| 1361 |
if (shift_control != 1) { |
| 1362 |
multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1; |
| 1363 |
} else {
|
| 1364 |
/* in CGA modes, multi_scan is ignored */
|
| 1365 |
/* XXX: is it correct ? */
|
| 1366 |
multi_scan = double_scan; |
| 1367 |
} |
| 1368 |
multi_run = multi_scan; |
| 1369 |
if (shift_control != s->shift_control ||
|
| 1370 |
double_scan != s->double_scan) {
|
| 1371 |
full_update = 1;
|
| 1372 |
s->shift_control = shift_control; |
| 1373 |
s->double_scan = double_scan; |
| 1374 |
} |
| 1375 |
|
| 1376 |
if (shift_control == 0) { |
| 1377 |
full_update |= update_palette16(s); |
| 1378 |
if (s->sr[0x01] & 8) { |
| 1379 |
v = VGA_DRAW_LINE4D2; |
| 1380 |
disp_width <<= 1;
|
| 1381 |
} else {
|
| 1382 |
v = VGA_DRAW_LINE4; |
| 1383 |
} |
| 1384 |
} else if (shift_control == 1) { |
| 1385 |
full_update |= update_palette16(s); |
| 1386 |
if (s->sr[0x01] & 8) { |
| 1387 |
v = VGA_DRAW_LINE2D2; |
| 1388 |
disp_width <<= 1;
|
| 1389 |
} else {
|
| 1390 |
v = VGA_DRAW_LINE2; |
| 1391 |
} |
| 1392 |
} else {
|
| 1393 |
switch(s->get_bpp(s)) {
|
| 1394 |
default:
|
| 1395 |
case 0: |
| 1396 |
full_update |= update_palette256(s); |
| 1397 |
v = VGA_DRAW_LINE8D2; |
| 1398 |
break;
|
| 1399 |
case 8: |
| 1400 |
full_update |= update_palette256(s); |
| 1401 |
v = VGA_DRAW_LINE8; |
| 1402 |
break;
|
| 1403 |
case 15: |
| 1404 |
v = VGA_DRAW_LINE15; |
| 1405 |
break;
|
| 1406 |
case 16: |
| 1407 |
v = VGA_DRAW_LINE16; |
| 1408 |
break;
|
| 1409 |
case 24: |
| 1410 |
v = VGA_DRAW_LINE24; |
| 1411 |
break;
|
| 1412 |
case 32: |
| 1413 |
v = VGA_DRAW_LINE32; |
| 1414 |
break;
|
| 1415 |
} |
| 1416 |
} |
| 1417 |
vga_draw_line = vga_draw_line_table[v * 4 + get_depth_index(s->ds->depth)];
|
| 1418 |
|
| 1419 |
if (disp_width != s->last_width ||
|
| 1420 |
height != s->last_height) {
|
| 1421 |
dpy_resize(s->ds, disp_width, height); |
| 1422 |
s->last_scr_width = disp_width; |
| 1423 |
s->last_scr_height = height; |
| 1424 |
s->last_width = disp_width; |
| 1425 |
s->last_height = height; |
| 1426 |
full_update = 1;
|
| 1427 |
} |
| 1428 |
if (s->cursor_invalidate)
|
| 1429 |
s->cursor_invalidate(s); |
| 1430 |
|
| 1431 |
line_offset = s->line_offset; |
| 1432 |
#if 0
|
| 1433 |
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",
|
| 1434 |
width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
|
| 1435 |
#endif
|
| 1436 |
addr1 = (s->start_addr * 4);
|
| 1437 |
bwidth = width * 4;
|
| 1438 |
y_start = -1;
|
| 1439 |
page_min = 0x7fffffff;
|
| 1440 |
page_max = -1;
|
| 1441 |
d = s->ds->data; |
| 1442 |
linesize = s->ds->linesize; |
| 1443 |
y1 = 0;
|
| 1444 |
for(y = 0; y < height; y++) { |
| 1445 |
addr = addr1; |
| 1446 |
if (!(s->cr[0x17] & 1)) { |
| 1447 |
int shift;
|
| 1448 |
/* CGA compatibility handling */
|
| 1449 |
shift = 14 + ((s->cr[0x17] >> 6) & 1); |
| 1450 |
addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift); |
| 1451 |
} |
| 1452 |
if (!(s->cr[0x17] & 2)) { |
| 1453 |
addr = (addr & ~0x8000) | ((y1 & 2) << 14); |
| 1454 |
} |
| 1455 |
page0 = s->vram_offset + (addr & TARGET_PAGE_MASK); |
| 1456 |
page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
|
| 1457 |
update = full_update | cpu_physical_memory_is_dirty(page0) | |
| 1458 |
cpu_physical_memory_is_dirty(page1); |
| 1459 |
if ((page1 - page0) > TARGET_PAGE_SIZE) {
|
| 1460 |
/* if wide line, can use another page */
|
| 1461 |
update |= cpu_physical_memory_is_dirty(page0 + TARGET_PAGE_SIZE); |
| 1462 |
} |
| 1463 |
/* explicit invalidation for the hardware cursor */
|
| 1464 |
update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1; |
| 1465 |
if (update) {
|
| 1466 |
if (y_start < 0) |
| 1467 |
y_start = y; |
| 1468 |
if (page0 < page_min)
|
| 1469 |
page_min = page0; |
| 1470 |
if (page1 > page_max)
|
| 1471 |
page_max = page1; |
| 1472 |
vga_draw_line(s, d, s->vram_ptr + addr, width); |
| 1473 |
if (s->cursor_draw_line)
|
| 1474 |
s->cursor_draw_line(s, d, y); |
| 1475 |
} else {
|
| 1476 |
if (y_start >= 0) { |
| 1477 |
/* flush to display */
|
| 1478 |
dpy_update(s->ds, 0, y_start,
|
| 1479 |
disp_width, y - y_start); |
| 1480 |
y_start = -1;
|
| 1481 |
} |
| 1482 |
} |
| 1483 |
if (!multi_run) {
|
| 1484 |
mask = (s->cr[0x17] & 3) ^ 3; |
| 1485 |
if ((y1 & mask) == mask)
|
| 1486 |
addr1 += line_offset; |
| 1487 |
y1++; |
| 1488 |
multi_run = multi_scan; |
| 1489 |
} else {
|
| 1490 |
multi_run--; |
| 1491 |
} |
| 1492 |
/* line compare acts on the displayed lines */
|
| 1493 |
if (y == s->line_compare)
|
| 1494 |
addr1 = 0;
|
| 1495 |
d += linesize; |
| 1496 |
} |
| 1497 |
if (y_start >= 0) { |
| 1498 |
/* flush to display */
|
| 1499 |
dpy_update(s->ds, 0, y_start,
|
| 1500 |
disp_width, y - y_start); |
| 1501 |
} |
| 1502 |
/* reset modified pages */
|
| 1503 |
if (page_max != -1) { |
| 1504 |
cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE); |
| 1505 |
} |
| 1506 |
memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4); |
| 1507 |
} |
| 1508 |
|
| 1509 |
static void vga_draw_blank(VGAState *s, int full_update) |
| 1510 |
{
|
| 1511 |
int i, w, val;
|
| 1512 |
uint8_t *d; |
| 1513 |
|
| 1514 |
if (!full_update)
|
| 1515 |
return;
|
| 1516 |
if (s->last_scr_width <= 0 || s->last_scr_height <= 0) |
| 1517 |
return;
|
| 1518 |
if (s->ds->depth == 8) |
| 1519 |
val = s->rgb_to_pixel(0, 0, 0); |
| 1520 |
else
|
| 1521 |
val = 0;
|
| 1522 |
w = s->last_scr_width * ((s->ds->depth + 7) >> 3); |
| 1523 |
d = s->ds->data; |
| 1524 |
for(i = 0; i < s->last_scr_height; i++) { |
| 1525 |
memset(d, val, w); |
| 1526 |
d += s->ds->linesize; |
| 1527 |
} |
| 1528 |
dpy_update(s->ds, 0, 0, |
| 1529 |
s->last_scr_width, s->last_scr_height); |
| 1530 |
} |
| 1531 |
|
| 1532 |
#define GMODE_TEXT 0 |
| 1533 |
#define GMODE_GRAPH 1 |
| 1534 |
#define GMODE_BLANK 2 |
| 1535 |
|
| 1536 |
void vga_update_display(void) |
| 1537 |
{
|
| 1538 |
VGAState *s = vga_state; |
| 1539 |
int full_update, graphic_mode;
|
| 1540 |
|
| 1541 |
if (s->ds->depth == 0) { |
| 1542 |
/* nothing to do */
|
| 1543 |
} else {
|
| 1544 |
switch(s->ds->depth) {
|
| 1545 |
case 8: |
| 1546 |
s->rgb_to_pixel = rgb_to_pixel8_dup; |
| 1547 |
break;
|
| 1548 |
case 15: |
| 1549 |
s->rgb_to_pixel = rgb_to_pixel15_dup; |
| 1550 |
break;
|
| 1551 |
default:
|
| 1552 |
case 16: |
| 1553 |
s->rgb_to_pixel = rgb_to_pixel16_dup; |
| 1554 |
break;
|
| 1555 |
case 32: |
| 1556 |
s->rgb_to_pixel = rgb_to_pixel32_dup; |
| 1557 |
break;
|
| 1558 |
} |
| 1559 |
|
| 1560 |
full_update = 0;
|
| 1561 |
if (!(s->ar_index & 0x20)) { |
| 1562 |
graphic_mode = GMODE_BLANK; |
| 1563 |
} else {
|
| 1564 |
graphic_mode = s->gr[6] & 1; |
| 1565 |
} |
| 1566 |
if (graphic_mode != s->graphic_mode) {
|
| 1567 |
s->graphic_mode = graphic_mode; |
| 1568 |
full_update = 1;
|
| 1569 |
} |
| 1570 |
switch(graphic_mode) {
|
| 1571 |
case GMODE_TEXT:
|
| 1572 |
vga_draw_text(s, full_update); |
| 1573 |
break;
|
| 1574 |
case GMODE_GRAPH:
|
| 1575 |
vga_draw_graphic(s, full_update); |
| 1576 |
break;
|
| 1577 |
case GMODE_BLANK:
|
| 1578 |
default:
|
| 1579 |
vga_draw_blank(s, full_update); |
| 1580 |
break;
|
| 1581 |
} |
| 1582 |
} |
| 1583 |
} |
| 1584 |
|
| 1585 |
/* force a full display refresh */
|
| 1586 |
void vga_invalidate_display(void) |
| 1587 |
{
|
| 1588 |
VGAState *s = vga_state; |
| 1589 |
|
| 1590 |
s->last_width = -1;
|
| 1591 |
s->last_height = -1;
|
| 1592 |
} |
| 1593 |
|
| 1594 |
static void vga_reset(VGAState *s) |
| 1595 |
{
|
| 1596 |
memset(s, 0, sizeof(VGAState)); |
| 1597 |
#ifdef CONFIG_S3VGA
|
| 1598 |
/* chip ID for 8c968 */
|
| 1599 |
s->cr[0x2d] = 0x88; |
| 1600 |
s->cr[0x2e] = 0xb0; |
| 1601 |
s->cr[0x2f] = 0x01; /* XXX: check revision code */ |
| 1602 |
s->cr[0x30] = 0xe1; |
| 1603 |
#endif
|
| 1604 |
s->graphic_mode = -1; /* force full update */ |
| 1605 |
} |
| 1606 |
|
| 1607 |
static CPUReadMemoryFunc *vga_mem_read[3] = { |
| 1608 |
vga_mem_readb, |
| 1609 |
vga_mem_readw, |
| 1610 |
vga_mem_readl, |
| 1611 |
}; |
| 1612 |
|
| 1613 |
static CPUWriteMemoryFunc *vga_mem_write[3] = { |
| 1614 |
vga_mem_writeb, |
| 1615 |
vga_mem_writew, |
| 1616 |
vga_mem_writel, |
| 1617 |
}; |
| 1618 |
|
| 1619 |
static void vga_save(QEMUFile *f, void *opaque) |
| 1620 |
{
|
| 1621 |
VGAState *s = opaque; |
| 1622 |
int i;
|
| 1623 |
|
| 1624 |
qemu_put_be32s(f, &s->latch); |
| 1625 |
qemu_put_8s(f, &s->sr_index); |
| 1626 |
qemu_put_buffer(f, s->sr, 8);
|
| 1627 |
qemu_put_8s(f, &s->gr_index); |
| 1628 |
qemu_put_buffer(f, s->gr, 16);
|
| 1629 |
qemu_put_8s(f, &s->ar_index); |
| 1630 |
qemu_put_buffer(f, s->ar, 21);
|
| 1631 |
qemu_put_be32s(f, &s->ar_flip_flop); |
| 1632 |
qemu_put_8s(f, &s->cr_index); |
| 1633 |
qemu_put_buffer(f, s->cr, 256);
|
| 1634 |
qemu_put_8s(f, &s->msr); |
| 1635 |
qemu_put_8s(f, &s->fcr); |
| 1636 |
qemu_put_8s(f, &s->st00); |
| 1637 |
qemu_put_8s(f, &s->st01); |
| 1638 |
|
| 1639 |
qemu_put_8s(f, &s->dac_state); |
| 1640 |
qemu_put_8s(f, &s->dac_sub_index); |
| 1641 |
qemu_put_8s(f, &s->dac_read_index); |
| 1642 |
qemu_put_8s(f, &s->dac_write_index); |
| 1643 |
qemu_put_buffer(f, s->dac_cache, 3);
|
| 1644 |
qemu_put_buffer(f, s->palette, 768);
|
| 1645 |
|
| 1646 |
qemu_put_be32s(f, &s->bank_offset); |
| 1647 |
#ifdef CONFIG_BOCHS_VBE
|
| 1648 |
qemu_put_byte(f, 1);
|
| 1649 |
qemu_put_be16s(f, &s->vbe_index); |
| 1650 |
for(i = 0; i < VBE_DISPI_INDEX_NB; i++) |
| 1651 |
qemu_put_be16s(f, &s->vbe_regs[i]); |
| 1652 |
qemu_put_be32s(f, &s->vbe_start_addr); |
| 1653 |
qemu_put_be32s(f, &s->vbe_line_offset); |
| 1654 |
qemu_put_be32s(f, &s->vbe_bank_mask); |
| 1655 |
#else
|
| 1656 |
qemu_put_byte(f, 0);
|
| 1657 |
#endif
|
| 1658 |
} |
| 1659 |
|
| 1660 |
static int vga_load(QEMUFile *f, void *opaque, int version_id) |
| 1661 |
{
|
| 1662 |
VGAState *s = opaque; |
| 1663 |
int is_vbe, i;
|
| 1664 |
|
| 1665 |
if (version_id != 1) |
| 1666 |
return -EINVAL;
|
| 1667 |
|
| 1668 |
qemu_get_be32s(f, &s->latch); |
| 1669 |
qemu_get_8s(f, &s->sr_index); |
| 1670 |
qemu_get_buffer(f, s->sr, 8);
|
| 1671 |
qemu_get_8s(f, &s->gr_index); |
| 1672 |
qemu_get_buffer(f, s->gr, 16);
|
| 1673 |
qemu_get_8s(f, &s->ar_index); |
| 1674 |
qemu_get_buffer(f, s->ar, 21);
|
| 1675 |
qemu_get_be32s(f, &s->ar_flip_flop); |
| 1676 |
qemu_get_8s(f, &s->cr_index); |
| 1677 |
qemu_get_buffer(f, s->cr, 256);
|
| 1678 |
qemu_get_8s(f, &s->msr); |
| 1679 |
qemu_get_8s(f, &s->fcr); |
| 1680 |
qemu_get_8s(f, &s->st00); |
| 1681 |
qemu_get_8s(f, &s->st01); |
| 1682 |
|
| 1683 |
qemu_get_8s(f, &s->dac_state); |
| 1684 |
qemu_get_8s(f, &s->dac_sub_index); |
| 1685 |
qemu_get_8s(f, &s->dac_read_index); |
| 1686 |
qemu_get_8s(f, &s->dac_write_index); |
| 1687 |
qemu_get_buffer(f, s->dac_cache, 3);
|
| 1688 |
qemu_get_buffer(f, s->palette, 768);
|
| 1689 |
|
| 1690 |
qemu_get_be32s(f, &s->bank_offset); |
| 1691 |
is_vbe = qemu_get_byte(f); |
| 1692 |
#ifdef CONFIG_BOCHS_VBE
|
| 1693 |
if (!is_vbe)
|
| 1694 |
return -EINVAL;
|
| 1695 |
qemu_get_be16s(f, &s->vbe_index); |
| 1696 |
for(i = 0; i < VBE_DISPI_INDEX_NB; i++) |
| 1697 |
qemu_get_be16s(f, &s->vbe_regs[i]); |
| 1698 |
qemu_get_be32s(f, &s->vbe_start_addr); |
| 1699 |
qemu_get_be32s(f, &s->vbe_line_offset); |
| 1700 |
qemu_get_be32s(f, &s->vbe_bank_mask); |
| 1701 |
#else
|
| 1702 |
if (is_vbe)
|
| 1703 |
return -EINVAL;
|
| 1704 |
#endif
|
| 1705 |
|
| 1706 |
/* force refresh */
|
| 1707 |
s->graphic_mode = -1;
|
| 1708 |
return 0; |
| 1709 |
} |
| 1710 |
|
| 1711 |
static void vga_map(PCIDevice *pci_dev, int region_num, |
| 1712 |
uint32_t addr, uint32_t size, int type)
|
| 1713 |
{
|
| 1714 |
VGAState *s = vga_state; |
| 1715 |
|
| 1716 |
cpu_register_physical_memory(addr, s->vram_size, s->vram_offset); |
| 1717 |
} |
| 1718 |
|
| 1719 |
void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
|
| 1720 |
unsigned long vga_ram_offset, int vga_ram_size) |
| 1721 |
{
|
| 1722 |
int i, j, v, b;
|
| 1723 |
|
| 1724 |
for(i = 0;i < 256; i++) { |
| 1725 |
v = 0;
|
| 1726 |
for(j = 0; j < 8; j++) { |
| 1727 |
v |= ((i >> j) & 1) << (j * 4); |
| 1728 |
} |
| 1729 |
expand4[i] = v; |
| 1730 |
|
| 1731 |
v = 0;
|
| 1732 |
for(j = 0; j < 4; j++) { |
| 1733 |
v |= ((i >> (2 * j)) & 3) << (j * 4); |
| 1734 |
} |
| 1735 |
expand2[i] = v; |
| 1736 |
} |
| 1737 |
for(i = 0; i < 16; i++) { |
| 1738 |
v = 0;
|
| 1739 |
for(j = 0; j < 4; j++) { |
| 1740 |
b = ((i >> j) & 1);
|
| 1741 |
v |= b << (2 * j);
|
| 1742 |
v |= b << (2 * j + 1); |
| 1743 |
} |
| 1744 |
expand4to8[i] = v; |
| 1745 |
} |
| 1746 |
|
| 1747 |
vga_reset(s); |
| 1748 |
|
| 1749 |
s->vram_ptr = vga_ram_base; |
| 1750 |
s->vram_offset = vga_ram_offset; |
| 1751 |
s->vram_size = vga_ram_size; |
| 1752 |
s->ds = ds; |
| 1753 |
s->get_bpp = vga_get_bpp; |
| 1754 |
s->get_offsets = vga_get_offsets; |
| 1755 |
s->get_resolution = vga_get_resolution; |
| 1756 |
/* XXX: currently needed for display */
|
| 1757 |
vga_state = s; |
| 1758 |
} |
| 1759 |
|
| 1760 |
|
| 1761 |
int vga_initialize(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
|
| 1762 |
unsigned long vga_ram_offset, int vga_ram_size) |
| 1763 |
{
|
| 1764 |
VGAState *s; |
| 1765 |
|
| 1766 |
s = qemu_mallocz(sizeof(VGAState));
|
| 1767 |
if (!s)
|
| 1768 |
return -1; |
| 1769 |
|
| 1770 |
vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size); |
| 1771 |
|
| 1772 |
register_savevm("vga", 0, 1, vga_save, vga_load, s); |
| 1773 |
|
| 1774 |
register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s); |
| 1775 |
|
| 1776 |
register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s); |
| 1777 |
register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s); |
| 1778 |
register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s); |
| 1779 |
register_ioport_write(0x3da, 1, 1, vga_ioport_write, s); |
| 1780 |
|
| 1781 |
register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s); |
| 1782 |
|
| 1783 |
register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s); |
| 1784 |
register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s); |
| 1785 |
register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s); |
| 1786 |
register_ioport_read(0x3da, 1, 1, vga_ioport_read, s); |
| 1787 |
s->bank_offset = 0;
|
| 1788 |
|
| 1789 |
#ifdef CONFIG_BOCHS_VBE
|
| 1790 |
s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0; |
| 1791 |
s->vbe_bank_mask = ((s->vram_size >> 16) - 1); |
| 1792 |
#if defined (TARGET_I386)
|
| 1793 |
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s); |
| 1794 |
register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s); |
| 1795 |
|
| 1796 |
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s); |
| 1797 |
register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s); |
| 1798 |
|
| 1799 |
/* old Bochs IO ports */
|
| 1800 |
register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s); |
| 1801 |
register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s); |
| 1802 |
|
| 1803 |
register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s); |
| 1804 |
register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s); |
| 1805 |
#else
|
| 1806 |
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s); |
| 1807 |
register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s); |
| 1808 |
|
| 1809 |
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s); |
| 1810 |
register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s); |
| 1811 |
#endif
|
| 1812 |
#endif /* CONFIG_BOCHS_VBE */ |
| 1813 |
|
| 1814 |
vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
|
| 1815 |
cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000, |
| 1816 |
vga_io_memory); |
| 1817 |
|
| 1818 |
if (bus) {
|
| 1819 |
PCIDevice *d; |
| 1820 |
uint8_t *pci_conf; |
| 1821 |
|
| 1822 |
d = pci_register_device(bus, "VGA",
|
| 1823 |
sizeof(PCIDevice),
|
| 1824 |
-1, NULL, NULL); |
| 1825 |
pci_conf = d->config; |
| 1826 |
pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID) |
| 1827 |
pci_conf[0x01] = 0x12; |
| 1828 |
pci_conf[0x02] = 0x11; |
| 1829 |
pci_conf[0x03] = 0x11; |
| 1830 |
pci_conf[0x0a] = 0x00; // VGA controller |
| 1831 |
pci_conf[0x0b] = 0x03; |
| 1832 |
pci_conf[0x0e] = 0x00; // header_type |
| 1833 |
|
| 1834 |
/* XXX: vga_ram_size must be a power of two */
|
| 1835 |
pci_register_io_region(d, 0, vga_ram_size,
|
| 1836 |
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map); |
| 1837 |
} else {
|
| 1838 |
#ifdef CONFIG_BOCHS_VBE
|
| 1839 |
/* XXX: use optimized standard vga accesses */
|
| 1840 |
cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS, |
| 1841 |
vga_ram_size, vga_ram_offset); |
| 1842 |
#endif
|
| 1843 |
} |
| 1844 |
return 0; |
| 1845 |
} |
| 1846 |
|
| 1847 |
/********************************************************/
|
| 1848 |
/* vga screen dump */
|
| 1849 |
|
| 1850 |
static int vga_save_w, vga_save_h; |
| 1851 |
|
| 1852 |
static void vga_save_dpy_update(DisplayState *s, |
| 1853 |
int x, int y, int w, int h) |
| 1854 |
{
|
| 1855 |
} |
| 1856 |
|
| 1857 |
static void vga_save_dpy_resize(DisplayState *s, int w, int h) |
| 1858 |
{
|
| 1859 |
s->linesize = w * 4;
|
| 1860 |
s->data = qemu_malloc(h * s->linesize); |
| 1861 |
vga_save_w = w; |
| 1862 |
vga_save_h = h; |
| 1863 |
} |
| 1864 |
|
| 1865 |
static void vga_save_dpy_refresh(DisplayState *s) |
| 1866 |
{
|
| 1867 |
} |
| 1868 |
|
| 1869 |
static int ppm_save(const char *filename, uint8_t *data, |
| 1870 |
int w, int h, int linesize) |
| 1871 |
{
|
| 1872 |
FILE *f; |
| 1873 |
uint8_t *d, *d1; |
| 1874 |
unsigned int v; |
| 1875 |
int y, x;
|
| 1876 |
|
| 1877 |
f = fopen(filename, "wb");
|
| 1878 |
if (!f)
|
| 1879 |
return -1; |
| 1880 |
fprintf(f, "P6\n%d %d\n%d\n",
|
| 1881 |
w, h, 255);
|
| 1882 |
d1 = data; |
| 1883 |
for(y = 0; y < h; y++) { |
| 1884 |
d = d1; |
| 1885 |
for(x = 0; x < w; x++) { |
| 1886 |
v = *(uint32_t *)d; |
| 1887 |
fputc((v >> 16) & 0xff, f); |
| 1888 |
fputc((v >> 8) & 0xff, f); |
| 1889 |
fputc((v) & 0xff, f);
|
| 1890 |
d += 4;
|
| 1891 |
} |
| 1892 |
d1 += linesize; |
| 1893 |
} |
| 1894 |
fclose(f); |
| 1895 |
return 0; |
| 1896 |
} |
| 1897 |
|
| 1898 |
/* save the vga display in a PPM image even if no display is
|
| 1899 |
available */
|
| 1900 |
void vga_screen_dump(const char *filename) |
| 1901 |
{
|
| 1902 |
VGAState *s = vga_state; |
| 1903 |
DisplayState *saved_ds, ds1, *ds = &ds1; |
| 1904 |
|
| 1905 |
/* XXX: this is a little hackish */
|
| 1906 |
vga_invalidate_display(); |
| 1907 |
saved_ds = s->ds; |
| 1908 |
|
| 1909 |
memset(ds, 0, sizeof(DisplayState)); |
| 1910 |
ds->dpy_update = vga_save_dpy_update; |
| 1911 |
ds->dpy_resize = vga_save_dpy_resize; |
| 1912 |
ds->dpy_refresh = vga_save_dpy_refresh; |
| 1913 |
ds->depth = 32;
|
| 1914 |
|
| 1915 |
s->ds = ds; |
| 1916 |
s->graphic_mode = -1;
|
| 1917 |
vga_update_display(); |
| 1918 |
|
| 1919 |
if (ds->data) {
|
| 1920 |
ppm_save(filename, ds->data, vga_save_w, vga_save_h, |
| 1921 |
s->ds->linesize); |
| 1922 |
qemu_free(ds->data); |
| 1923 |
} |
| 1924 |
s->ds = saved_ds; |
| 1925 |
} |