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