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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 "hw.h" |
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#include "console.h" |
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#include "pc.h" |
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#include "pci.h" |
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#include "vga_int.h" |
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#include "pixel_ops.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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static void vga_screen_dump(void *opaque, const char *filename); |
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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]; |
330 |
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) { |
342 |
/* 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); |
345 |
return;
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} |
347 |
switch(s->cr_index) {
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case 0x01: /* horizontal display end */ |
349 |
case 0x07: |
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case 0x09: |
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case 0x0c: |
352 |
case 0x0d: |
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case 0x12: /* vertical display end */ |
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s->cr[s->cr_index] = val; |
355 |
break;
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default:
|
357 |
s->cr[s->cr_index] = val; |
358 |
break;
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} |
360 |
break;
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case 0x3ba: |
362 |
case 0x3da: |
363 |
s->fcr = val & 0x10;
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break;
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} |
366 |
} |
367 |
|
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#ifdef CONFIG_BOCHS_VBE
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static uint32_t vbe_ioport_read_index(void *opaque, uint32_t addr) |
370 |
{ |
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VGAState *s = opaque; |
372 |
uint32_t val; |
373 |
val = s->vbe_index; |
374 |
return val;
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} |
376 |
|
377 |
static uint32_t vbe_ioport_read_data(void *opaque, uint32_t addr) |
378 |
{ |
379 |
VGAState *s = opaque; |
380 |
uint32_t val; |
381 |
|
382 |
if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
|
383 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_GETCAPS) {
|
384 |
switch(s->vbe_index) {
|
385 |
/* XXX: do not hardcode ? */
|
386 |
case VBE_DISPI_INDEX_XRES:
|
387 |
val = VBE_DISPI_MAX_XRES; |
388 |
break;
|
389 |
case VBE_DISPI_INDEX_YRES:
|
390 |
val = VBE_DISPI_MAX_YRES; |
391 |
break;
|
392 |
case VBE_DISPI_INDEX_BPP:
|
393 |
val = VBE_DISPI_MAX_BPP; |
394 |
break;
|
395 |
default:
|
396 |
val = s->vbe_regs[s->vbe_index]; |
397 |
break;
|
398 |
} |
399 |
} else {
|
400 |
val = s->vbe_regs[s->vbe_index]; |
401 |
} |
402 |
} else {
|
403 |
val = 0;
|
404 |
} |
405 |
#ifdef DEBUG_BOCHS_VBE
|
406 |
printf("VBE: read index=0x%x val=0x%x\n", s->vbe_index, val);
|
407 |
#endif
|
408 |
return val;
|
409 |
} |
410 |
|
411 |
static void vbe_ioport_write_index(void *opaque, uint32_t addr, uint32_t val) |
412 |
{ |
413 |
VGAState *s = opaque; |
414 |
s->vbe_index = val; |
415 |
} |
416 |
|
417 |
static void vbe_ioport_write_data(void *opaque, uint32_t addr, uint32_t val) |
418 |
{ |
419 |
VGAState *s = opaque; |
420 |
|
421 |
if (s->vbe_index <= VBE_DISPI_INDEX_NB) {
|
422 |
#ifdef DEBUG_BOCHS_VBE
|
423 |
printf("VBE: write index=0x%x val=0x%x\n", s->vbe_index, val);
|
424 |
#endif
|
425 |
switch(s->vbe_index) {
|
426 |
case VBE_DISPI_INDEX_ID:
|
427 |
if (val == VBE_DISPI_ID0 ||
|
428 |
val == VBE_DISPI_ID1 || |
429 |
val == VBE_DISPI_ID2 || |
430 |
val == VBE_DISPI_ID3 || |
431 |
val == VBE_DISPI_ID4) { |
432 |
s->vbe_regs[s->vbe_index] = val; |
433 |
} |
434 |
break;
|
435 |
case VBE_DISPI_INDEX_XRES:
|
436 |
if ((val <= VBE_DISPI_MAX_XRES) && ((val & 7) == 0)) { |
437 |
s->vbe_regs[s->vbe_index] = val; |
438 |
} |
439 |
break;
|
440 |
case VBE_DISPI_INDEX_YRES:
|
441 |
if (val <= VBE_DISPI_MAX_YRES) {
|
442 |
s->vbe_regs[s->vbe_index] = val; |
443 |
} |
444 |
break;
|
445 |
case VBE_DISPI_INDEX_BPP:
|
446 |
if (val == 0) |
447 |
val = 8;
|
448 |
if (val == 4 || val == 8 || val == 15 || |
449 |
val == 16 || val == 24 || val == 32) { |
450 |
s->vbe_regs[s->vbe_index] = val; |
451 |
} |
452 |
break;
|
453 |
case VBE_DISPI_INDEX_BANK:
|
454 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { |
455 |
val &= (s->vbe_bank_mask >> 2);
|
456 |
} else {
|
457 |
val &= s->vbe_bank_mask; |
458 |
} |
459 |
s->vbe_regs[s->vbe_index] = val; |
460 |
s->bank_offset = (val << 16);
|
461 |
break;
|
462 |
case VBE_DISPI_INDEX_ENABLE:
|
463 |
if ((val & VBE_DISPI_ENABLED) &&
|
464 |
!(s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED)) { |
465 |
int h, shift_control;
|
466 |
|
467 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = |
468 |
s->vbe_regs[VBE_DISPI_INDEX_XRES]; |
469 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = |
470 |
s->vbe_regs[VBE_DISPI_INDEX_YRES]; |
471 |
s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET] = 0;
|
472 |
s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET] = 0;
|
473 |
|
474 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
475 |
s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 1;
|
476 |
else
|
477 |
s->vbe_line_offset = s->vbe_regs[VBE_DISPI_INDEX_XRES] * |
478 |
((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
479 |
s->vbe_start_addr = 0;
|
480 |
|
481 |
/* clear the screen (should be done in BIOS) */
|
482 |
if (!(val & VBE_DISPI_NOCLEARMEM)) {
|
483 |
memset(s->vram_ptr, 0,
|
484 |
s->vbe_regs[VBE_DISPI_INDEX_YRES] * s->vbe_line_offset); |
485 |
} |
486 |
|
487 |
/* we initialize the VGA graphic mode (should be done
|
488 |
in BIOS) */
|
489 |
s->gr[0x06] = (s->gr[0x06] & ~0x0c) | 0x05; /* graphic mode + memory map 1 */ |
490 |
s->cr[0x17] |= 3; /* no CGA modes */ |
491 |
s->cr[0x13] = s->vbe_line_offset >> 3; |
492 |
/* width */
|
493 |
s->cr[0x01] = (s->vbe_regs[VBE_DISPI_INDEX_XRES] >> 3) - 1; |
494 |
/* height (only meaningful if < 1024) */
|
495 |
h = s->vbe_regs[VBE_DISPI_INDEX_YRES] - 1;
|
496 |
s->cr[0x12] = h;
|
497 |
s->cr[0x07] = (s->cr[0x07] & ~0x42) | |
498 |
((h >> 7) & 0x02) | ((h >> 3) & 0x40); |
499 |
/* line compare to 1023 */
|
500 |
s->cr[0x18] = 0xff; |
501 |
s->cr[0x07] |= 0x10; |
502 |
s->cr[0x09] |= 0x40; |
503 |
|
504 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) { |
505 |
shift_control = 0;
|
506 |
s->sr[0x01] &= ~8; /* no double line */ |
507 |
} else {
|
508 |
shift_control = 2;
|
509 |
s->sr[4] |= 0x08; /* set chain 4 mode */ |
510 |
s->sr[2] |= 0x0f; /* activate all planes */ |
511 |
} |
512 |
s->gr[0x05] = (s->gr[0x05] & ~0x60) | (shift_control << 5); |
513 |
s->cr[0x09] &= ~0x9f; /* no double scan */ |
514 |
} else {
|
515 |
/* XXX: the bios should do that */
|
516 |
s->bank_offset = 0;
|
517 |
} |
518 |
s->dac_8bit = (val & VBE_DISPI_8BIT_DAC) > 0;
|
519 |
s->vbe_regs[s->vbe_index] = val; |
520 |
break;
|
521 |
case VBE_DISPI_INDEX_VIRT_WIDTH:
|
522 |
{ |
523 |
int w, h, line_offset;
|
524 |
|
525 |
if (val < s->vbe_regs[VBE_DISPI_INDEX_XRES])
|
526 |
return;
|
527 |
w = val; |
528 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
529 |
line_offset = w >> 1;
|
530 |
else
|
531 |
line_offset = w * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
532 |
h = s->vram_size / line_offset; |
533 |
/* XXX: support weird bochs semantics ? */
|
534 |
if (h < s->vbe_regs[VBE_DISPI_INDEX_YRES])
|
535 |
return;
|
536 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_WIDTH] = w; |
537 |
s->vbe_regs[VBE_DISPI_INDEX_VIRT_HEIGHT] = h; |
538 |
s->vbe_line_offset = line_offset; |
539 |
} |
540 |
break;
|
541 |
case VBE_DISPI_INDEX_X_OFFSET:
|
542 |
case VBE_DISPI_INDEX_Y_OFFSET:
|
543 |
{ |
544 |
int x;
|
545 |
s->vbe_regs[s->vbe_index] = val; |
546 |
s->vbe_start_addr = s->vbe_line_offset * s->vbe_regs[VBE_DISPI_INDEX_Y_OFFSET]; |
547 |
x = s->vbe_regs[VBE_DISPI_INDEX_X_OFFSET]; |
548 |
if (s->vbe_regs[VBE_DISPI_INDEX_BPP] == 4) |
549 |
s->vbe_start_addr += x >> 1;
|
550 |
else
|
551 |
s->vbe_start_addr += x * ((s->vbe_regs[VBE_DISPI_INDEX_BPP] + 7) >> 3); |
552 |
s->vbe_start_addr >>= 2;
|
553 |
} |
554 |
break;
|
555 |
default:
|
556 |
break;
|
557 |
} |
558 |
} |
559 |
} |
560 |
#endif
|
561 |
|
562 |
/* called for accesses between 0xa0000 and 0xc0000 */
|
563 |
uint32_t vga_mem_readb(void *opaque, target_phys_addr_t addr)
|
564 |
{ |
565 |
VGAState *s = opaque; |
566 |
int memory_map_mode, plane;
|
567 |
uint32_t ret; |
568 |
|
569 |
/* convert to VGA memory offset */
|
570 |
memory_map_mode = (s->gr[6] >> 2) & 3; |
571 |
addr &= 0x1ffff;
|
572 |
switch(memory_map_mode) {
|
573 |
case 0: |
574 |
break;
|
575 |
case 1: |
576 |
if (addr >= 0x10000) |
577 |
return 0xff; |
578 |
addr += s->bank_offset; |
579 |
break;
|
580 |
case 2: |
581 |
addr -= 0x10000;
|
582 |
if (addr >= 0x8000) |
583 |
return 0xff; |
584 |
break;
|
585 |
default:
|
586 |
case 3: |
587 |
addr -= 0x18000;
|
588 |
if (addr >= 0x8000) |
589 |
return 0xff; |
590 |
break;
|
591 |
} |
592 |
|
593 |
if (s->sr[4] & 0x08) { |
594 |
/* chain 4 mode : simplest access */
|
595 |
ret = s->vram_ptr[addr]; |
596 |
} else if (s->gr[5] & 0x10) { |
597 |
/* odd/even mode (aka text mode mapping) */
|
598 |
plane = (s->gr[4] & 2) | (addr & 1); |
599 |
ret = s->vram_ptr[((addr & ~1) << 1) | plane]; |
600 |
} else {
|
601 |
/* standard VGA latched access */
|
602 |
s->latch = ((uint32_t *)s->vram_ptr)[addr]; |
603 |
|
604 |
if (!(s->gr[5] & 0x08)) { |
605 |
/* read mode 0 */
|
606 |
plane = s->gr[4];
|
607 |
ret = GET_PLANE(s->latch, plane); |
608 |
} else {
|
609 |
/* read mode 1 */
|
610 |
ret = (s->latch ^ mask16[s->gr[2]]) & mask16[s->gr[7]]; |
611 |
ret |= ret >> 16;
|
612 |
ret |= ret >> 8;
|
613 |
ret = (~ret) & 0xff;
|
614 |
} |
615 |
} |
616 |
return ret;
|
617 |
} |
618 |
|
619 |
static uint32_t vga_mem_readw(void *opaque, target_phys_addr_t addr) |
620 |
{ |
621 |
uint32_t v; |
622 |
#ifdef TARGET_WORDS_BIGENDIAN
|
623 |
v = vga_mem_readb(opaque, addr) << 8;
|
624 |
v |= vga_mem_readb(opaque, addr + 1);
|
625 |
#else
|
626 |
v = vga_mem_readb(opaque, addr); |
627 |
v |= vga_mem_readb(opaque, addr + 1) << 8; |
628 |
#endif
|
629 |
return v;
|
630 |
} |
631 |
|
632 |
static uint32_t vga_mem_readl(void *opaque, target_phys_addr_t addr) |
633 |
{ |
634 |
uint32_t v; |
635 |
#ifdef TARGET_WORDS_BIGENDIAN
|
636 |
v = vga_mem_readb(opaque, addr) << 24;
|
637 |
v |= vga_mem_readb(opaque, addr + 1) << 16; |
638 |
v |= vga_mem_readb(opaque, addr + 2) << 8; |
639 |
v |= vga_mem_readb(opaque, addr + 3);
|
640 |
#else
|
641 |
v = vga_mem_readb(opaque, addr); |
642 |
v |= vga_mem_readb(opaque, addr + 1) << 8; |
643 |
v |= vga_mem_readb(opaque, addr + 2) << 16; |
644 |
v |= vga_mem_readb(opaque, addr + 3) << 24; |
645 |
#endif
|
646 |
return v;
|
647 |
} |
648 |
|
649 |
/* called for accesses between 0xa0000 and 0xc0000 */
|
650 |
void vga_mem_writeb(void *opaque, target_phys_addr_t addr, uint32_t val) |
651 |
{ |
652 |
VGAState *s = opaque; |
653 |
int memory_map_mode, plane, write_mode, b, func_select, mask;
|
654 |
uint32_t write_mask, bit_mask, set_mask; |
655 |
|
656 |
#ifdef DEBUG_VGA_MEM
|
657 |
printf("vga: [0x%x] = 0x%02x\n", addr, val);
|
658 |
#endif
|
659 |
/* convert to VGA memory offset */
|
660 |
memory_map_mode = (s->gr[6] >> 2) & 3; |
661 |
addr &= 0x1ffff;
|
662 |
switch(memory_map_mode) {
|
663 |
case 0: |
664 |
break;
|
665 |
case 1: |
666 |
if (addr >= 0x10000) |
667 |
return;
|
668 |
addr += s->bank_offset; |
669 |
break;
|
670 |
case 2: |
671 |
addr -= 0x10000;
|
672 |
if (addr >= 0x8000) |
673 |
return;
|
674 |
break;
|
675 |
default:
|
676 |
case 3: |
677 |
addr -= 0x18000;
|
678 |
if (addr >= 0x8000) |
679 |
return;
|
680 |
break;
|
681 |
} |
682 |
|
683 |
if (s->sr[4] & 0x08) { |
684 |
/* chain 4 mode : simplest access */
|
685 |
plane = addr & 3;
|
686 |
mask = (1 << plane);
|
687 |
if (s->sr[2] & mask) { |
688 |
s->vram_ptr[addr] = val; |
689 |
#ifdef DEBUG_VGA_MEM
|
690 |
printf("vga: chain4: [0x%x]\n", addr);
|
691 |
#endif
|
692 |
s->plane_updated |= mask; /* only used to detect font change */
|
693 |
cpu_physical_memory_set_dirty(s->vram_offset + addr); |
694 |
} |
695 |
} else if (s->gr[5] & 0x10) { |
696 |
/* odd/even mode (aka text mode mapping) */
|
697 |
plane = (s->gr[4] & 2) | (addr & 1); |
698 |
mask = (1 << plane);
|
699 |
if (s->sr[2] & mask) { |
700 |
addr = ((addr & ~1) << 1) | plane; |
701 |
s->vram_ptr[addr] = val; |
702 |
#ifdef DEBUG_VGA_MEM
|
703 |
printf("vga: odd/even: [0x%x]\n", addr);
|
704 |
#endif
|
705 |
s->plane_updated |= mask; /* only used to detect font change */
|
706 |
cpu_physical_memory_set_dirty(s->vram_offset + addr); |
707 |
} |
708 |
} else {
|
709 |
/* standard VGA latched access */
|
710 |
write_mode = s->gr[5] & 3; |
711 |
switch(write_mode) {
|
712 |
default:
|
713 |
case 0: |
714 |
/* rotate */
|
715 |
b = s->gr[3] & 7; |
716 |
val = ((val >> b) | (val << (8 - b))) & 0xff; |
717 |
val |= val << 8;
|
718 |
val |= val << 16;
|
719 |
|
720 |
/* apply set/reset mask */
|
721 |
set_mask = mask16[s->gr[1]];
|
722 |
val = (val & ~set_mask) | (mask16[s->gr[0]] & set_mask);
|
723 |
bit_mask = s->gr[8];
|
724 |
break;
|
725 |
case 1: |
726 |
val = s->latch; |
727 |
goto do_write;
|
728 |
case 2: |
729 |
val = mask16[val & 0x0f];
|
730 |
bit_mask = s->gr[8];
|
731 |
break;
|
732 |
case 3: |
733 |
/* rotate */
|
734 |
b = s->gr[3] & 7; |
735 |
val = (val >> b) | (val << (8 - b));
|
736 |
|
737 |
bit_mask = s->gr[8] & val;
|
738 |
val = mask16[s->gr[0]];
|
739 |
break;
|
740 |
} |
741 |
|
742 |
/* apply logical operation */
|
743 |
func_select = s->gr[3] >> 3; |
744 |
switch(func_select) {
|
745 |
case 0: |
746 |
default:
|
747 |
/* nothing to do */
|
748 |
break;
|
749 |
case 1: |
750 |
/* and */
|
751 |
val &= s->latch; |
752 |
break;
|
753 |
case 2: |
754 |
/* or */
|
755 |
val |= s->latch; |
756 |
break;
|
757 |
case 3: |
758 |
/* xor */
|
759 |
val ^= s->latch; |
760 |
break;
|
761 |
} |
762 |
|
763 |
/* apply bit mask */
|
764 |
bit_mask |= bit_mask << 8;
|
765 |
bit_mask |= bit_mask << 16;
|
766 |
val = (val & bit_mask) | (s->latch & ~bit_mask); |
767 |
|
768 |
do_write:
|
769 |
/* mask data according to sr[2] */
|
770 |
mask = s->sr[2];
|
771 |
s->plane_updated |= mask; /* only used to detect font change */
|
772 |
write_mask = mask16[mask]; |
773 |
((uint32_t *)s->vram_ptr)[addr] = |
774 |
(((uint32_t *)s->vram_ptr)[addr] & ~write_mask) | |
775 |
(val & write_mask); |
776 |
#ifdef DEBUG_VGA_MEM
|
777 |
printf("vga: latch: [0x%x] mask=0x%08x val=0x%08x\n",
|
778 |
addr * 4, write_mask, val);
|
779 |
#endif
|
780 |
cpu_physical_memory_set_dirty(s->vram_offset + (addr << 2));
|
781 |
} |
782 |
} |
783 |
|
784 |
static void vga_mem_writew(void *opaque, target_phys_addr_t addr, uint32_t val) |
785 |
{ |
786 |
#ifdef TARGET_WORDS_BIGENDIAN
|
787 |
vga_mem_writeb(opaque, addr, (val >> 8) & 0xff); |
788 |
vga_mem_writeb(opaque, addr + 1, val & 0xff); |
789 |
#else
|
790 |
vga_mem_writeb(opaque, addr, val & 0xff);
|
791 |
vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); |
792 |
#endif
|
793 |
} |
794 |
|
795 |
static void vga_mem_writel(void *opaque, target_phys_addr_t addr, uint32_t val) |
796 |
{ |
797 |
#ifdef TARGET_WORDS_BIGENDIAN
|
798 |
vga_mem_writeb(opaque, addr, (val >> 24) & 0xff); |
799 |
vga_mem_writeb(opaque, addr + 1, (val >> 16) & 0xff); |
800 |
vga_mem_writeb(opaque, addr + 2, (val >> 8) & 0xff); |
801 |
vga_mem_writeb(opaque, addr + 3, val & 0xff); |
802 |
#else
|
803 |
vga_mem_writeb(opaque, addr, val & 0xff);
|
804 |
vga_mem_writeb(opaque, addr + 1, (val >> 8) & 0xff); |
805 |
vga_mem_writeb(opaque, addr + 2, (val >> 16) & 0xff); |
806 |
vga_mem_writeb(opaque, addr + 3, (val >> 24) & 0xff); |
807 |
#endif
|
808 |
} |
809 |
|
810 |
typedef void vga_draw_glyph8_func(uint8_t *d, int linesize, |
811 |
const uint8_t *font_ptr, int h, |
812 |
uint32_t fgcol, uint32_t bgcol); |
813 |
typedef void vga_draw_glyph9_func(uint8_t *d, int linesize, |
814 |
const uint8_t *font_ptr, int h, |
815 |
uint32_t fgcol, uint32_t bgcol, int dup9);
|
816 |
typedef void vga_draw_line_func(VGAState *s1, uint8_t *d, |
817 |
const uint8_t *s, int width); |
818 |
|
819 |
#define DEPTH 8 |
820 |
#include "vga_template.h" |
821 |
|
822 |
#define DEPTH 15 |
823 |
#include "vga_template.h" |
824 |
|
825 |
#define BGR_FORMAT
|
826 |
#define DEPTH 15 |
827 |
#include "vga_template.h" |
828 |
|
829 |
#define DEPTH 16 |
830 |
#include "vga_template.h" |
831 |
|
832 |
#define BGR_FORMAT
|
833 |
#define DEPTH 16 |
834 |
#include "vga_template.h" |
835 |
|
836 |
#define DEPTH 32 |
837 |
#include "vga_template.h" |
838 |
|
839 |
#define BGR_FORMAT
|
840 |
#define DEPTH 32 |
841 |
#include "vga_template.h" |
842 |
|
843 |
static unsigned int rgb_to_pixel8_dup(unsigned int r, unsigned int g, unsigned b) |
844 |
{ |
845 |
unsigned int col; |
846 |
col = rgb_to_pixel8(r, g, b); |
847 |
col |= col << 8;
|
848 |
col |= col << 16;
|
849 |
return col;
|
850 |
} |
851 |
|
852 |
static unsigned int rgb_to_pixel15_dup(unsigned int r, unsigned int g, unsigned b) |
853 |
{ |
854 |
unsigned int col; |
855 |
col = rgb_to_pixel15(r, g, b); |
856 |
col |= col << 16;
|
857 |
return col;
|
858 |
} |
859 |
|
860 |
static unsigned int rgb_to_pixel15bgr_dup(unsigned int r, unsigned int g, |
861 |
unsigned int b) |
862 |
{ |
863 |
unsigned int col; |
864 |
col = rgb_to_pixel15bgr(r, g, b); |
865 |
col |= col << 16;
|
866 |
return col;
|
867 |
} |
868 |
|
869 |
static unsigned int rgb_to_pixel16_dup(unsigned int r, unsigned int g, unsigned b) |
870 |
{ |
871 |
unsigned int col; |
872 |
col = rgb_to_pixel16(r, g, b); |
873 |
col |= col << 16;
|
874 |
return col;
|
875 |
} |
876 |
|
877 |
static unsigned int rgb_to_pixel16bgr_dup(unsigned int r, unsigned int g, |
878 |
unsigned int b) |
879 |
{ |
880 |
unsigned int col; |
881 |
col = rgb_to_pixel16bgr(r, g, b); |
882 |
col |= col << 16;
|
883 |
return col;
|
884 |
} |
885 |
|
886 |
static unsigned int rgb_to_pixel32_dup(unsigned int r, unsigned int g, unsigned b) |
887 |
{ |
888 |
unsigned int col; |
889 |
col = rgb_to_pixel32(r, g, b); |
890 |
return col;
|
891 |
} |
892 |
|
893 |
static unsigned int rgb_to_pixel32bgr_dup(unsigned int r, unsigned int g, unsigned b) |
894 |
{ |
895 |
unsigned int col; |
896 |
col = rgb_to_pixel32bgr(r, g, b); |
897 |
return col;
|
898 |
} |
899 |
|
900 |
/* return true if the palette was modified */
|
901 |
static int update_palette16(VGAState *s) |
902 |
{ |
903 |
int full_update, i;
|
904 |
uint32_t v, col, *palette; |
905 |
|
906 |
full_update = 0;
|
907 |
palette = s->last_palette; |
908 |
for(i = 0; i < 16; i++) { |
909 |
v = s->ar[i]; |
910 |
if (s->ar[0x10] & 0x80) |
911 |
v = ((s->ar[0x14] & 0xf) << 4) | (v & 0xf); |
912 |
else
|
913 |
v = ((s->ar[0x14] & 0xc) << 4) | (v & 0x3f); |
914 |
v = v * 3;
|
915 |
col = s->rgb_to_pixel(c6_to_8(s->palette[v]), |
916 |
c6_to_8(s->palette[v + 1]),
|
917 |
c6_to_8(s->palette[v + 2]));
|
918 |
if (col != palette[i]) {
|
919 |
full_update = 1;
|
920 |
palette[i] = col; |
921 |
} |
922 |
} |
923 |
return full_update;
|
924 |
} |
925 |
|
926 |
/* return true if the palette was modified */
|
927 |
static int update_palette256(VGAState *s) |
928 |
{ |
929 |
int full_update, i;
|
930 |
uint32_t v, col, *palette; |
931 |
|
932 |
full_update = 0;
|
933 |
palette = s->last_palette; |
934 |
v = 0;
|
935 |
for(i = 0; i < 256; i++) { |
936 |
if (s->dac_8bit) {
|
937 |
col = s->rgb_to_pixel(s->palette[v], |
938 |
s->palette[v + 1],
|
939 |
s->palette[v + 2]);
|
940 |
} else {
|
941 |
col = s->rgb_to_pixel(c6_to_8(s->palette[v]), |
942 |
c6_to_8(s->palette[v + 1]),
|
943 |
c6_to_8(s->palette[v + 2]));
|
944 |
} |
945 |
if (col != palette[i]) {
|
946 |
full_update = 1;
|
947 |
palette[i] = col; |
948 |
} |
949 |
v += 3;
|
950 |
} |
951 |
return full_update;
|
952 |
} |
953 |
|
954 |
static void vga_get_offsets(VGAState *s, |
955 |
uint32_t *pline_offset, |
956 |
uint32_t *pstart_addr, |
957 |
uint32_t *pline_compare) |
958 |
{ |
959 |
uint32_t start_addr, line_offset, line_compare; |
960 |
#ifdef CONFIG_BOCHS_VBE
|
961 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
962 |
line_offset = s->vbe_line_offset; |
963 |
start_addr = s->vbe_start_addr; |
964 |
line_compare = 65535;
|
965 |
} else
|
966 |
#endif
|
967 |
{ |
968 |
/* compute line_offset in bytes */
|
969 |
line_offset = s->cr[0x13];
|
970 |
line_offset <<= 3;
|
971 |
|
972 |
/* starting address */
|
973 |
start_addr = s->cr[0x0d] | (s->cr[0x0c] << 8); |
974 |
|
975 |
/* line compare */
|
976 |
line_compare = s->cr[0x18] |
|
977 |
((s->cr[0x07] & 0x10) << 4) | |
978 |
((s->cr[0x09] & 0x40) << 3); |
979 |
} |
980 |
*pline_offset = line_offset; |
981 |
*pstart_addr = start_addr; |
982 |
*pline_compare = line_compare; |
983 |
} |
984 |
|
985 |
/* update start_addr and line_offset. Return TRUE if modified */
|
986 |
static int update_basic_params(VGAState *s) |
987 |
{ |
988 |
int full_update;
|
989 |
uint32_t start_addr, line_offset, line_compare; |
990 |
|
991 |
full_update = 0;
|
992 |
|
993 |
s->get_offsets(s, &line_offset, &start_addr, &line_compare); |
994 |
|
995 |
if (line_offset != s->line_offset ||
|
996 |
start_addr != s->start_addr || |
997 |
line_compare != s->line_compare) { |
998 |
s->line_offset = line_offset; |
999 |
s->start_addr = start_addr; |
1000 |
s->line_compare = line_compare; |
1001 |
full_update = 1;
|
1002 |
} |
1003 |
return full_update;
|
1004 |
} |
1005 |
|
1006 |
#define NB_DEPTHS 7 |
1007 |
|
1008 |
static inline int get_depth_index(DisplayState *s) |
1009 |
{ |
1010 |
switch(s->depth) {
|
1011 |
default:
|
1012 |
case 8: |
1013 |
return 0; |
1014 |
case 15: |
1015 |
if (s->bgr)
|
1016 |
return 5; |
1017 |
else
|
1018 |
return 1; |
1019 |
case 16: |
1020 |
if (s->bgr)
|
1021 |
return 6; |
1022 |
else
|
1023 |
return 2; |
1024 |
case 32: |
1025 |
if (s->bgr)
|
1026 |
return 4; |
1027 |
else
|
1028 |
return 3; |
1029 |
} |
1030 |
} |
1031 |
|
1032 |
static vga_draw_glyph8_func *vga_draw_glyph8_table[NB_DEPTHS] = {
|
1033 |
vga_draw_glyph8_8, |
1034 |
vga_draw_glyph8_16, |
1035 |
vga_draw_glyph8_16, |
1036 |
vga_draw_glyph8_32, |
1037 |
vga_draw_glyph8_32, |
1038 |
vga_draw_glyph8_16, |
1039 |
vga_draw_glyph8_16, |
1040 |
}; |
1041 |
|
1042 |
static vga_draw_glyph8_func *vga_draw_glyph16_table[NB_DEPTHS] = {
|
1043 |
vga_draw_glyph16_8, |
1044 |
vga_draw_glyph16_16, |
1045 |
vga_draw_glyph16_16, |
1046 |
vga_draw_glyph16_32, |
1047 |
vga_draw_glyph16_32, |
1048 |
vga_draw_glyph16_16, |
1049 |
vga_draw_glyph16_16, |
1050 |
}; |
1051 |
|
1052 |
static vga_draw_glyph9_func *vga_draw_glyph9_table[NB_DEPTHS] = {
|
1053 |
vga_draw_glyph9_8, |
1054 |
vga_draw_glyph9_16, |
1055 |
vga_draw_glyph9_16, |
1056 |
vga_draw_glyph9_32, |
1057 |
vga_draw_glyph9_32, |
1058 |
vga_draw_glyph9_16, |
1059 |
vga_draw_glyph9_16, |
1060 |
}; |
1061 |
|
1062 |
static const uint8_t cursor_glyph[32 * 4] = { |
1063 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1064 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1065 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1066 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1067 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1068 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1069 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1070 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1071 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1072 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1073 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1074 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1075 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1076 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1077 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1078 |
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, |
1079 |
}; |
1080 |
|
1081 |
/*
|
1082 |
* Text mode update
|
1083 |
* Missing:
|
1084 |
* - double scan
|
1085 |
* - double width
|
1086 |
* - underline
|
1087 |
* - flashing
|
1088 |
*/
|
1089 |
static void vga_draw_text(VGAState *s, int full_update) |
1090 |
{ |
1091 |
int cx, cy, cheight, cw, ch, cattr, height, width, ch_attr;
|
1092 |
int cx_min, cx_max, linesize, x_incr;
|
1093 |
uint32_t offset, fgcol, bgcol, v, cursor_offset; |
1094 |
uint8_t *d1, *d, *src, *s1, *dest, *cursor_ptr; |
1095 |
const uint8_t *font_ptr, *font_base[2]; |
1096 |
int dup9, line_offset, depth_index;
|
1097 |
uint32_t *palette; |
1098 |
uint32_t *ch_attr_ptr; |
1099 |
vga_draw_glyph8_func *vga_draw_glyph8; |
1100 |
vga_draw_glyph9_func *vga_draw_glyph9; |
1101 |
|
1102 |
full_update |= update_palette16(s); |
1103 |
palette = s->last_palette; |
1104 |
|
1105 |
/* compute font data address (in plane 2) */
|
1106 |
v = s->sr[3];
|
1107 |
offset = (((v >> 4) & 1) | ((v << 1) & 6)) * 8192 * 4 + 2; |
1108 |
if (offset != s->font_offsets[0]) { |
1109 |
s->font_offsets[0] = offset;
|
1110 |
full_update = 1;
|
1111 |
} |
1112 |
font_base[0] = s->vram_ptr + offset;
|
1113 |
|
1114 |
offset = (((v >> 5) & 1) | ((v >> 1) & 6)) * 8192 * 4 + 2; |
1115 |
font_base[1] = s->vram_ptr + offset;
|
1116 |
if (offset != s->font_offsets[1]) { |
1117 |
s->font_offsets[1] = offset;
|
1118 |
full_update = 1;
|
1119 |
} |
1120 |
if (s->plane_updated & (1 << 2)) { |
1121 |
/* if the plane 2 was modified since the last display, it
|
1122 |
indicates the font may have been modified */
|
1123 |
s->plane_updated = 0;
|
1124 |
full_update = 1;
|
1125 |
} |
1126 |
full_update |= update_basic_params(s); |
1127 |
|
1128 |
line_offset = s->line_offset; |
1129 |
s1 = s->vram_ptr + (s->start_addr * 4);
|
1130 |
|
1131 |
/* total width & height */
|
1132 |
cheight = (s->cr[9] & 0x1f) + 1; |
1133 |
cw = 8;
|
1134 |
if (!(s->sr[1] & 0x01)) |
1135 |
cw = 9;
|
1136 |
if (s->sr[1] & 0x08) |
1137 |
cw = 16; /* NOTE: no 18 pixel wide */ |
1138 |
x_incr = cw * ((s->ds->depth + 7) >> 3); |
1139 |
width = (s->cr[0x01] + 1); |
1140 |
if (s->cr[0x06] == 100) { |
1141 |
/* ugly hack for CGA 160x100x16 - explain me the logic */
|
1142 |
height = 100;
|
1143 |
} else {
|
1144 |
height = s->cr[0x12] |
|
1145 |
((s->cr[0x07] & 0x02) << 7) | |
1146 |
((s->cr[0x07] & 0x40) << 3); |
1147 |
height = (height + 1) / cheight;
|
1148 |
} |
1149 |
if ((height * width) > CH_ATTR_SIZE) {
|
1150 |
/* better than nothing: exit if transient size is too big */
|
1151 |
return;
|
1152 |
} |
1153 |
|
1154 |
if (width != s->last_width || height != s->last_height ||
|
1155 |
cw != s->last_cw || cheight != s->last_ch) { |
1156 |
s->last_scr_width = width * cw; |
1157 |
s->last_scr_height = height * cheight; |
1158 |
dpy_resize(s->ds, s->last_scr_width, s->last_scr_height); |
1159 |
s->last_width = width; |
1160 |
s->last_height = height; |
1161 |
s->last_ch = cheight; |
1162 |
s->last_cw = cw; |
1163 |
full_update = 1;
|
1164 |
} |
1165 |
cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr; |
1166 |
if (cursor_offset != s->cursor_offset ||
|
1167 |
s->cr[0xa] != s->cursor_start ||
|
1168 |
s->cr[0xb] != s->cursor_end) {
|
1169 |
/* if the cursor position changed, we update the old and new
|
1170 |
chars */
|
1171 |
if (s->cursor_offset < CH_ATTR_SIZE)
|
1172 |
s->last_ch_attr[s->cursor_offset] = -1;
|
1173 |
if (cursor_offset < CH_ATTR_SIZE)
|
1174 |
s->last_ch_attr[cursor_offset] = -1;
|
1175 |
s->cursor_offset = cursor_offset; |
1176 |
s->cursor_start = s->cr[0xa];
|
1177 |
s->cursor_end = s->cr[0xb];
|
1178 |
} |
1179 |
cursor_ptr = s->vram_ptr + (s->start_addr + cursor_offset) * 4;
|
1180 |
|
1181 |
depth_index = get_depth_index(s->ds); |
1182 |
if (cw == 16) |
1183 |
vga_draw_glyph8 = vga_draw_glyph16_table[depth_index]; |
1184 |
else
|
1185 |
vga_draw_glyph8 = vga_draw_glyph8_table[depth_index]; |
1186 |
vga_draw_glyph9 = vga_draw_glyph9_table[depth_index]; |
1187 |
|
1188 |
dest = s->ds->data; |
1189 |
linesize = s->ds->linesize; |
1190 |
ch_attr_ptr = s->last_ch_attr; |
1191 |
for(cy = 0; cy < height; cy++) { |
1192 |
d1 = dest; |
1193 |
src = s1; |
1194 |
cx_min = width; |
1195 |
cx_max = -1;
|
1196 |
for(cx = 0; cx < width; cx++) { |
1197 |
ch_attr = *(uint16_t *)src; |
1198 |
if (full_update || ch_attr != *ch_attr_ptr) {
|
1199 |
if (cx < cx_min)
|
1200 |
cx_min = cx; |
1201 |
if (cx > cx_max)
|
1202 |
cx_max = cx; |
1203 |
*ch_attr_ptr = ch_attr; |
1204 |
#ifdef WORDS_BIGENDIAN
|
1205 |
ch = ch_attr >> 8;
|
1206 |
cattr = ch_attr & 0xff;
|
1207 |
#else
|
1208 |
ch = ch_attr & 0xff;
|
1209 |
cattr = ch_attr >> 8;
|
1210 |
#endif
|
1211 |
font_ptr = font_base[(cattr >> 3) & 1]; |
1212 |
font_ptr += 32 * 4 * ch; |
1213 |
bgcol = palette[cattr >> 4];
|
1214 |
fgcol = palette[cattr & 0x0f];
|
1215 |
if (cw != 9) { |
1216 |
vga_draw_glyph8(d1, linesize, |
1217 |
font_ptr, cheight, fgcol, bgcol); |
1218 |
} else {
|
1219 |
dup9 = 0;
|
1220 |
if (ch >= 0xb0 && ch <= 0xdf && (s->ar[0x10] & 0x04)) |
1221 |
dup9 = 1;
|
1222 |
vga_draw_glyph9(d1, linesize, |
1223 |
font_ptr, cheight, fgcol, bgcol, dup9); |
1224 |
} |
1225 |
if (src == cursor_ptr &&
|
1226 |
!(s->cr[0x0a] & 0x20)) { |
1227 |
int line_start, line_last, h;
|
1228 |
/* draw the cursor */
|
1229 |
line_start = s->cr[0x0a] & 0x1f; |
1230 |
line_last = s->cr[0x0b] & 0x1f; |
1231 |
/* XXX: check that */
|
1232 |
if (line_last > cheight - 1) |
1233 |
line_last = cheight - 1;
|
1234 |
if (line_last >= line_start && line_start < cheight) {
|
1235 |
h = line_last - line_start + 1;
|
1236 |
d = d1 + linesize * line_start; |
1237 |
if (cw != 9) { |
1238 |
vga_draw_glyph8(d, linesize, |
1239 |
cursor_glyph, h, fgcol, bgcol); |
1240 |
} else {
|
1241 |
vga_draw_glyph9(d, linesize, |
1242 |
cursor_glyph, h, fgcol, bgcol, 1);
|
1243 |
} |
1244 |
} |
1245 |
} |
1246 |
} |
1247 |
d1 += x_incr; |
1248 |
src += 4;
|
1249 |
ch_attr_ptr++; |
1250 |
} |
1251 |
if (cx_max != -1) { |
1252 |
dpy_update(s->ds, cx_min * cw, cy * cheight, |
1253 |
(cx_max - cx_min + 1) * cw, cheight);
|
1254 |
} |
1255 |
dest += linesize * cheight; |
1256 |
s1 += line_offset; |
1257 |
} |
1258 |
} |
1259 |
|
1260 |
enum {
|
1261 |
VGA_DRAW_LINE2, |
1262 |
VGA_DRAW_LINE2D2, |
1263 |
VGA_DRAW_LINE4, |
1264 |
VGA_DRAW_LINE4D2, |
1265 |
VGA_DRAW_LINE8D2, |
1266 |
VGA_DRAW_LINE8, |
1267 |
VGA_DRAW_LINE15, |
1268 |
VGA_DRAW_LINE16, |
1269 |
VGA_DRAW_LINE24, |
1270 |
VGA_DRAW_LINE32, |
1271 |
VGA_DRAW_LINE_NB, |
1272 |
}; |
1273 |
|
1274 |
static vga_draw_line_func *vga_draw_line_table[NB_DEPTHS * VGA_DRAW_LINE_NB] = {
|
1275 |
vga_draw_line2_8, |
1276 |
vga_draw_line2_16, |
1277 |
vga_draw_line2_16, |
1278 |
vga_draw_line2_32, |
1279 |
vga_draw_line2_32, |
1280 |
vga_draw_line2_16, |
1281 |
vga_draw_line2_16, |
1282 |
|
1283 |
vga_draw_line2d2_8, |
1284 |
vga_draw_line2d2_16, |
1285 |
vga_draw_line2d2_16, |
1286 |
vga_draw_line2d2_32, |
1287 |
vga_draw_line2d2_32, |
1288 |
vga_draw_line2d2_16, |
1289 |
vga_draw_line2d2_16, |
1290 |
|
1291 |
vga_draw_line4_8, |
1292 |
vga_draw_line4_16, |
1293 |
vga_draw_line4_16, |
1294 |
vga_draw_line4_32, |
1295 |
vga_draw_line4_32, |
1296 |
vga_draw_line4_16, |
1297 |
vga_draw_line4_16, |
1298 |
|
1299 |
vga_draw_line4d2_8, |
1300 |
vga_draw_line4d2_16, |
1301 |
vga_draw_line4d2_16, |
1302 |
vga_draw_line4d2_32, |
1303 |
vga_draw_line4d2_32, |
1304 |
vga_draw_line4d2_16, |
1305 |
vga_draw_line4d2_16, |
1306 |
|
1307 |
vga_draw_line8d2_8, |
1308 |
vga_draw_line8d2_16, |
1309 |
vga_draw_line8d2_16, |
1310 |
vga_draw_line8d2_32, |
1311 |
vga_draw_line8d2_32, |
1312 |
vga_draw_line8d2_16, |
1313 |
vga_draw_line8d2_16, |
1314 |
|
1315 |
vga_draw_line8_8, |
1316 |
vga_draw_line8_16, |
1317 |
vga_draw_line8_16, |
1318 |
vga_draw_line8_32, |
1319 |
vga_draw_line8_32, |
1320 |
vga_draw_line8_16, |
1321 |
vga_draw_line8_16, |
1322 |
|
1323 |
vga_draw_line15_8, |
1324 |
vga_draw_line15_15, |
1325 |
vga_draw_line15_16, |
1326 |
vga_draw_line15_32, |
1327 |
vga_draw_line15_32bgr, |
1328 |
vga_draw_line15_15bgr, |
1329 |
vga_draw_line15_16bgr, |
1330 |
|
1331 |
vga_draw_line16_8, |
1332 |
vga_draw_line16_15, |
1333 |
vga_draw_line16_16, |
1334 |
vga_draw_line16_32, |
1335 |
vga_draw_line16_32bgr, |
1336 |
vga_draw_line16_15bgr, |
1337 |
vga_draw_line16_16bgr, |
1338 |
|
1339 |
vga_draw_line24_8, |
1340 |
vga_draw_line24_15, |
1341 |
vga_draw_line24_16, |
1342 |
vga_draw_line24_32, |
1343 |
vga_draw_line24_32bgr, |
1344 |
vga_draw_line24_15bgr, |
1345 |
vga_draw_line24_16bgr, |
1346 |
|
1347 |
vga_draw_line32_8, |
1348 |
vga_draw_line32_15, |
1349 |
vga_draw_line32_16, |
1350 |
vga_draw_line32_32, |
1351 |
vga_draw_line32_32bgr, |
1352 |
vga_draw_line32_15bgr, |
1353 |
vga_draw_line32_16bgr, |
1354 |
}; |
1355 |
|
1356 |
typedef unsigned int rgb_to_pixel_dup_func(unsigned int r, unsigned int g, unsigned b); |
1357 |
|
1358 |
static rgb_to_pixel_dup_func *rgb_to_pixel_dup_table[NB_DEPTHS] = {
|
1359 |
rgb_to_pixel8_dup, |
1360 |
rgb_to_pixel15_dup, |
1361 |
rgb_to_pixel16_dup, |
1362 |
rgb_to_pixel32_dup, |
1363 |
rgb_to_pixel32bgr_dup, |
1364 |
rgb_to_pixel15bgr_dup, |
1365 |
rgb_to_pixel16bgr_dup, |
1366 |
}; |
1367 |
|
1368 |
static int vga_get_bpp(VGAState *s) |
1369 |
{ |
1370 |
int ret;
|
1371 |
#ifdef CONFIG_BOCHS_VBE
|
1372 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
1373 |
ret = s->vbe_regs[VBE_DISPI_INDEX_BPP]; |
1374 |
} else
|
1375 |
#endif
|
1376 |
{ |
1377 |
ret = 0;
|
1378 |
} |
1379 |
return ret;
|
1380 |
} |
1381 |
|
1382 |
static void vga_get_resolution(VGAState *s, int *pwidth, int *pheight) |
1383 |
{ |
1384 |
int width, height;
|
1385 |
|
1386 |
#ifdef CONFIG_BOCHS_VBE
|
1387 |
if (s->vbe_regs[VBE_DISPI_INDEX_ENABLE] & VBE_DISPI_ENABLED) {
|
1388 |
width = s->vbe_regs[VBE_DISPI_INDEX_XRES]; |
1389 |
height = s->vbe_regs[VBE_DISPI_INDEX_YRES]; |
1390 |
} else
|
1391 |
#endif
|
1392 |
{ |
1393 |
width = (s->cr[0x01] + 1) * 8; |
1394 |
height = s->cr[0x12] |
|
1395 |
((s->cr[0x07] & 0x02) << 7) | |
1396 |
((s->cr[0x07] & 0x40) << 3); |
1397 |
height = (height + 1);
|
1398 |
} |
1399 |
*pwidth = width; |
1400 |
*pheight = height; |
1401 |
} |
1402 |
|
1403 |
void vga_invalidate_scanlines(VGAState *s, int y1, int y2) |
1404 |
{ |
1405 |
int y;
|
1406 |
if (y1 >= VGA_MAX_HEIGHT)
|
1407 |
return;
|
1408 |
if (y2 >= VGA_MAX_HEIGHT)
|
1409 |
y2 = VGA_MAX_HEIGHT; |
1410 |
for(y = y1; y < y2; y++) {
|
1411 |
s->invalidated_y_table[y >> 5] |= 1 << (y & 0x1f); |
1412 |
} |
1413 |
} |
1414 |
|
1415 |
/*
|
1416 |
* graphic modes
|
1417 |
*/
|
1418 |
static void vga_draw_graphic(VGAState *s, int full_update) |
1419 |
{ |
1420 |
int y1, y, update, page_min, page_max, linesize, y_start, double_scan, mask;
|
1421 |
int width, height, shift_control, line_offset, page0, page1, bwidth, bits;
|
1422 |
int disp_width, multi_scan, multi_run;
|
1423 |
uint8_t *d; |
1424 |
uint32_t v, addr1, addr; |
1425 |
vga_draw_line_func *vga_draw_line; |
1426 |
|
1427 |
full_update |= update_basic_params(s); |
1428 |
|
1429 |
s->get_resolution(s, &width, &height); |
1430 |
disp_width = width; |
1431 |
|
1432 |
shift_control = (s->gr[0x05] >> 5) & 3; |
1433 |
double_scan = (s->cr[0x09] >> 7); |
1434 |
if (shift_control != 1) { |
1435 |
multi_scan = (((s->cr[0x09] & 0x1f) + 1) << double_scan) - 1; |
1436 |
} else {
|
1437 |
/* in CGA modes, multi_scan is ignored */
|
1438 |
/* XXX: is it correct ? */
|
1439 |
multi_scan = double_scan; |
1440 |
} |
1441 |
multi_run = multi_scan; |
1442 |
if (shift_control != s->shift_control ||
|
1443 |
double_scan != s->double_scan) { |
1444 |
full_update = 1;
|
1445 |
s->shift_control = shift_control; |
1446 |
s->double_scan = double_scan; |
1447 |
} |
1448 |
|
1449 |
if (shift_control == 0) { |
1450 |
full_update |= update_palette16(s); |
1451 |
if (s->sr[0x01] & 8) { |
1452 |
v = VGA_DRAW_LINE4D2; |
1453 |
disp_width <<= 1;
|
1454 |
} else {
|
1455 |
v = VGA_DRAW_LINE4; |
1456 |
} |
1457 |
bits = 4;
|
1458 |
} else if (shift_control == 1) { |
1459 |
full_update |= update_palette16(s); |
1460 |
if (s->sr[0x01] & 8) { |
1461 |
v = VGA_DRAW_LINE2D2; |
1462 |
disp_width <<= 1;
|
1463 |
} else {
|
1464 |
v = VGA_DRAW_LINE2; |
1465 |
} |
1466 |
bits = 4;
|
1467 |
} else {
|
1468 |
switch(s->get_bpp(s)) {
|
1469 |
default:
|
1470 |
case 0: |
1471 |
full_update |= update_palette256(s); |
1472 |
v = VGA_DRAW_LINE8D2; |
1473 |
bits = 4;
|
1474 |
break;
|
1475 |
case 8: |
1476 |
full_update |= update_palette256(s); |
1477 |
v = VGA_DRAW_LINE8; |
1478 |
bits = 8;
|
1479 |
break;
|
1480 |
case 15: |
1481 |
v = VGA_DRAW_LINE15; |
1482 |
bits = 16;
|
1483 |
break;
|
1484 |
case 16: |
1485 |
v = VGA_DRAW_LINE16; |
1486 |
bits = 16;
|
1487 |
break;
|
1488 |
case 24: |
1489 |
v = VGA_DRAW_LINE24; |
1490 |
bits = 24;
|
1491 |
break;
|
1492 |
case 32: |
1493 |
v = VGA_DRAW_LINE32; |
1494 |
bits = 32;
|
1495 |
break;
|
1496 |
} |
1497 |
} |
1498 |
vga_draw_line = vga_draw_line_table[v * NB_DEPTHS + get_depth_index(s->ds)]; |
1499 |
|
1500 |
if (disp_width != s->last_width ||
|
1501 |
height != s->last_height) { |
1502 |
dpy_resize(s->ds, disp_width, height); |
1503 |
s->last_scr_width = disp_width; |
1504 |
s->last_scr_height = height; |
1505 |
s->last_width = disp_width; |
1506 |
s->last_height = height; |
1507 |
full_update = 1;
|
1508 |
} |
1509 |
if (s->cursor_invalidate)
|
1510 |
s->cursor_invalidate(s); |
1511 |
|
1512 |
line_offset = s->line_offset; |
1513 |
#if 0
|
1514 |
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",
|
1515 |
width, height, v, line_offset, s->cr[9], s->cr[0x17], s->line_compare, s->sr[0x01]);
|
1516 |
#endif
|
1517 |
addr1 = (s->start_addr * 4);
|
1518 |
bwidth = (width * bits + 7) / 8; |
1519 |
y_start = -1;
|
1520 |
page_min = 0x7fffffff;
|
1521 |
page_max = -1;
|
1522 |
d = s->ds->data; |
1523 |
linesize = s->ds->linesize; |
1524 |
y1 = 0;
|
1525 |
for(y = 0; y < height; y++) { |
1526 |
addr = addr1; |
1527 |
if (!(s->cr[0x17] & 1)) { |
1528 |
int shift;
|
1529 |
/* CGA compatibility handling */
|
1530 |
shift = 14 + ((s->cr[0x17] >> 6) & 1); |
1531 |
addr = (addr & ~(1 << shift)) | ((y1 & 1) << shift); |
1532 |
} |
1533 |
if (!(s->cr[0x17] & 2)) { |
1534 |
addr = (addr & ~0x8000) | ((y1 & 2) << 14); |
1535 |
} |
1536 |
page0 = s->vram_offset + (addr & TARGET_PAGE_MASK); |
1537 |
page1 = s->vram_offset + ((addr + bwidth - 1) & TARGET_PAGE_MASK);
|
1538 |
update = full_update | |
1539 |
cpu_physical_memory_get_dirty(page0, VGA_DIRTY_FLAG) | |
1540 |
cpu_physical_memory_get_dirty(page1, VGA_DIRTY_FLAG); |
1541 |
if ((page1 - page0) > TARGET_PAGE_SIZE) {
|
1542 |
/* if wide line, can use another page */
|
1543 |
update |= cpu_physical_memory_get_dirty(page0 + TARGET_PAGE_SIZE, |
1544 |
VGA_DIRTY_FLAG); |
1545 |
} |
1546 |
/* explicit invalidation for the hardware cursor */
|
1547 |
update |= (s->invalidated_y_table[y >> 5] >> (y & 0x1f)) & 1; |
1548 |
if (update) {
|
1549 |
if (y_start < 0) |
1550 |
y_start = y; |
1551 |
if (page0 < page_min)
|
1552 |
page_min = page0; |
1553 |
if (page1 > page_max)
|
1554 |
page_max = page1; |
1555 |
vga_draw_line(s, d, s->vram_ptr + addr, width); |
1556 |
if (s->cursor_draw_line)
|
1557 |
s->cursor_draw_line(s, d, y); |
1558 |
} else {
|
1559 |
if (y_start >= 0) { |
1560 |
/* flush to display */
|
1561 |
dpy_update(s->ds, 0, y_start,
|
1562 |
disp_width, y - y_start); |
1563 |
y_start = -1;
|
1564 |
} |
1565 |
} |
1566 |
if (!multi_run) {
|
1567 |
mask = (s->cr[0x17] & 3) ^ 3; |
1568 |
if ((y1 & mask) == mask)
|
1569 |
addr1 += line_offset; |
1570 |
y1++; |
1571 |
multi_run = multi_scan; |
1572 |
} else {
|
1573 |
multi_run--; |
1574 |
} |
1575 |
/* line compare acts on the displayed lines */
|
1576 |
if (y == s->line_compare)
|
1577 |
addr1 = 0;
|
1578 |
d += linesize; |
1579 |
} |
1580 |
if (y_start >= 0) { |
1581 |
/* flush to display */
|
1582 |
dpy_update(s->ds, 0, y_start,
|
1583 |
disp_width, y - y_start); |
1584 |
} |
1585 |
/* reset modified pages */
|
1586 |
if (page_max != -1) { |
1587 |
cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE, |
1588 |
VGA_DIRTY_FLAG); |
1589 |
} |
1590 |
memset(s->invalidated_y_table, 0, ((height + 31) >> 5) * 4); |
1591 |
} |
1592 |
|
1593 |
static void vga_draw_blank(VGAState *s, int full_update) |
1594 |
{ |
1595 |
int i, w, val;
|
1596 |
uint8_t *d; |
1597 |
|
1598 |
if (!full_update)
|
1599 |
return;
|
1600 |
if (s->last_scr_width <= 0 || s->last_scr_height <= 0) |
1601 |
return;
|
1602 |
if (s->ds->depth == 8) |
1603 |
val = s->rgb_to_pixel(0, 0, 0); |
1604 |
else
|
1605 |
val = 0;
|
1606 |
w = s->last_scr_width * ((s->ds->depth + 7) >> 3); |
1607 |
d = s->ds->data; |
1608 |
for(i = 0; i < s->last_scr_height; i++) { |
1609 |
memset(d, val, w); |
1610 |
d += s->ds->linesize; |
1611 |
} |
1612 |
dpy_update(s->ds, 0, 0, |
1613 |
s->last_scr_width, s->last_scr_height); |
1614 |
} |
1615 |
|
1616 |
#define GMODE_TEXT 0 |
1617 |
#define GMODE_GRAPH 1 |
1618 |
#define GMODE_BLANK 2 |
1619 |
|
1620 |
static void vga_update_display(void *opaque) |
1621 |
{ |
1622 |
VGAState *s = (VGAState *)opaque; |
1623 |
int full_update, graphic_mode;
|
1624 |
|
1625 |
if (s->ds->depth == 0) { |
1626 |
/* nothing to do */
|
1627 |
} else {
|
1628 |
s->rgb_to_pixel = |
1629 |
rgb_to_pixel_dup_table[get_depth_index(s->ds)]; |
1630 |
|
1631 |
full_update = 0;
|
1632 |
if (!(s->ar_index & 0x20)) { |
1633 |
graphic_mode = GMODE_BLANK; |
1634 |
} else {
|
1635 |
graphic_mode = s->gr[6] & 1; |
1636 |
} |
1637 |
if (graphic_mode != s->graphic_mode) {
|
1638 |
s->graphic_mode = graphic_mode; |
1639 |
full_update = 1;
|
1640 |
} |
1641 |
switch(graphic_mode) {
|
1642 |
case GMODE_TEXT:
|
1643 |
vga_draw_text(s, full_update); |
1644 |
break;
|
1645 |
case GMODE_GRAPH:
|
1646 |
vga_draw_graphic(s, full_update); |
1647 |
break;
|
1648 |
case GMODE_BLANK:
|
1649 |
default:
|
1650 |
vga_draw_blank(s, full_update); |
1651 |
break;
|
1652 |
} |
1653 |
} |
1654 |
} |
1655 |
|
1656 |
/* force a full display refresh */
|
1657 |
static void vga_invalidate_display(void *opaque) |
1658 |
{ |
1659 |
VGAState *s = (VGAState *)opaque; |
1660 |
|
1661 |
s->last_width = -1;
|
1662 |
s->last_height = -1;
|
1663 |
} |
1664 |
|
1665 |
static void vga_reset(VGAState *s) |
1666 |
{ |
1667 |
memset(s, 0, sizeof(VGAState)); |
1668 |
s->graphic_mode = -1; /* force full update */ |
1669 |
} |
1670 |
|
1671 |
#define TEXTMODE_X(x) ((x) % width)
|
1672 |
#define TEXTMODE_Y(x) ((x) / width)
|
1673 |
#define VMEM2CHTYPE(v) ((v & 0xff0007ff) | \ |
1674 |
((v & 0x00000800) << 10) | ((v & 0x00007000) >> 1)) |
1675 |
/* relay text rendering to the display driver
|
1676 |
* instead of doing a full vga_update_display() */
|
1677 |
static void vga_update_text(void *opaque, console_ch_t *chardata) |
1678 |
{ |
1679 |
VGAState *s = (VGAState *) opaque; |
1680 |
int graphic_mode, i, cursor_offset, cursor_visible;
|
1681 |
int cw, cheight, width, height, size, c_min, c_max;
|
1682 |
uint32_t *src; |
1683 |
console_ch_t *dst, val; |
1684 |
char msg_buffer[80]; |
1685 |
int full_update = 0; |
1686 |
|
1687 |
if (!(s->ar_index & 0x20)) { |
1688 |
graphic_mode = GMODE_BLANK; |
1689 |
} else {
|
1690 |
graphic_mode = s->gr[6] & 1; |
1691 |
} |
1692 |
if (graphic_mode != s->graphic_mode) {
|
1693 |
s->graphic_mode = graphic_mode; |
1694 |
full_update = 1;
|
1695 |
} |
1696 |
if (s->last_width == -1) { |
1697 |
s->last_width = 0;
|
1698 |
full_update = 1;
|
1699 |
} |
1700 |
|
1701 |
switch (graphic_mode) {
|
1702 |
case GMODE_TEXT:
|
1703 |
/* TODO: update palette */
|
1704 |
full_update |= update_basic_params(s); |
1705 |
|
1706 |
/* total width & height */
|
1707 |
cheight = (s->cr[9] & 0x1f) + 1; |
1708 |
cw = 8;
|
1709 |
if (!(s->sr[1] & 0x01)) |
1710 |
cw = 9;
|
1711 |
if (s->sr[1] & 0x08) |
1712 |
cw = 16; /* NOTE: no 18 pixel wide */ |
1713 |
width = (s->cr[0x01] + 1); |
1714 |
if (s->cr[0x06] == 100) { |
1715 |
/* ugly hack for CGA 160x100x16 - explain me the logic */
|
1716 |
height = 100;
|
1717 |
} else {
|
1718 |
height = s->cr[0x12] |
|
1719 |
((s->cr[0x07] & 0x02) << 7) | |
1720 |
((s->cr[0x07] & 0x40) << 3); |
1721 |
height = (height + 1) / cheight;
|
1722 |
} |
1723 |
|
1724 |
size = (height * width); |
1725 |
if (size > CH_ATTR_SIZE) {
|
1726 |
if (!full_update)
|
1727 |
return;
|
1728 |
|
1729 |
sprintf(msg_buffer, "%i x %i Text mode", width, height);
|
1730 |
break;
|
1731 |
} |
1732 |
|
1733 |
if (width != s->last_width || height != s->last_height ||
|
1734 |
cw != s->last_cw || cheight != s->last_ch) { |
1735 |
s->last_scr_width = width * cw; |
1736 |
s->last_scr_height = height * cheight; |
1737 |
dpy_resize(s->ds, width, height); |
1738 |
s->last_width = width; |
1739 |
s->last_height = height; |
1740 |
s->last_ch = cheight; |
1741 |
s->last_cw = cw; |
1742 |
full_update = 1;
|
1743 |
} |
1744 |
|
1745 |
/* Update "hardware" cursor */
|
1746 |
cursor_offset = ((s->cr[0x0e] << 8) | s->cr[0x0f]) - s->start_addr; |
1747 |
if (cursor_offset != s->cursor_offset ||
|
1748 |
s->cr[0xa] != s->cursor_start ||
|
1749 |
s->cr[0xb] != s->cursor_end || full_update) {
|
1750 |
cursor_visible = !(s->cr[0xa] & 0x20); |
1751 |
if (cursor_visible && cursor_offset < size && cursor_offset >= 0) |
1752 |
dpy_cursor(s->ds, |
1753 |
TEXTMODE_X(cursor_offset), |
1754 |
TEXTMODE_Y(cursor_offset)); |
1755 |
else
|
1756 |
dpy_cursor(s->ds, -1, -1); |
1757 |
s->cursor_offset = cursor_offset; |
1758 |
s->cursor_start = s->cr[0xa];
|
1759 |
s->cursor_end = s->cr[0xb];
|
1760 |
} |
1761 |
|
1762 |
src = (uint32_t *) s->vram_ptr + s->start_addr; |
1763 |
dst = chardata; |
1764 |
|
1765 |
if (full_update) {
|
1766 |
for (i = 0; i < size; src ++, dst ++, i ++) |
1767 |
console_write_ch(dst, VMEM2CHTYPE(*src)); |
1768 |
|
1769 |
dpy_update(s->ds, 0, 0, width, height); |
1770 |
} else {
|
1771 |
c_max = 0;
|
1772 |
|
1773 |
for (i = 0; i < size; src ++, dst ++, i ++) { |
1774 |
console_write_ch(&val, VMEM2CHTYPE(*src)); |
1775 |
if (*dst != val) {
|
1776 |
*dst = val; |
1777 |
c_max = i; |
1778 |
break;
|
1779 |
} |
1780 |
} |
1781 |
c_min = i; |
1782 |
for (; i < size; src ++, dst ++, i ++) {
|
1783 |
console_write_ch(&val, VMEM2CHTYPE(*src)); |
1784 |
if (*dst != val) {
|
1785 |
*dst = val; |
1786 |
c_max = i; |
1787 |
} |
1788 |
} |
1789 |
|
1790 |
if (c_min <= c_max) {
|
1791 |
i = TEXTMODE_Y(c_min); |
1792 |
dpy_update(s->ds, 0, i, width, TEXTMODE_Y(c_max) - i + 1); |
1793 |
} |
1794 |
} |
1795 |
|
1796 |
return;
|
1797 |
case GMODE_GRAPH:
|
1798 |
if (!full_update)
|
1799 |
return;
|
1800 |
|
1801 |
s->get_resolution(s, &width, &height); |
1802 |
sprintf(msg_buffer, "%i x %i Graphic mode", width, height);
|
1803 |
break;
|
1804 |
case GMODE_BLANK:
|
1805 |
default:
|
1806 |
if (!full_update)
|
1807 |
return;
|
1808 |
|
1809 |
sprintf(msg_buffer, "VGA Blank mode");
|
1810 |
break;
|
1811 |
} |
1812 |
|
1813 |
/* Display a message */
|
1814 |
s->last_width = 60;
|
1815 |
s->last_height = height = 3;
|
1816 |
dpy_cursor(s->ds, -1, -1); |
1817 |
dpy_resize(s->ds, s->last_width, height); |
1818 |
|
1819 |
for (dst = chardata, i = 0; i < s->last_width * height; i ++) |
1820 |
console_write_ch(dst ++, ' ');
|
1821 |
|
1822 |
size = strlen(msg_buffer); |
1823 |
width = (s->last_width - size) / 2;
|
1824 |
dst = chardata + s->last_width + width; |
1825 |
for (i = 0; i < size; i ++) |
1826 |
console_write_ch(dst ++, 0x00200100 | msg_buffer[i]);
|
1827 |
|
1828 |
dpy_update(s->ds, 0, 0, s->last_width, height); |
1829 |
} |
1830 |
|
1831 |
static CPUReadMemoryFunc *vga_mem_read[3] = { |
1832 |
vga_mem_readb, |
1833 |
vga_mem_readw, |
1834 |
vga_mem_readl, |
1835 |
}; |
1836 |
|
1837 |
static CPUWriteMemoryFunc *vga_mem_write[3] = { |
1838 |
vga_mem_writeb, |
1839 |
vga_mem_writew, |
1840 |
vga_mem_writel, |
1841 |
}; |
1842 |
|
1843 |
static void vga_save(QEMUFile *f, void *opaque) |
1844 |
{ |
1845 |
VGAState *s = opaque; |
1846 |
int i;
|
1847 |
|
1848 |
if (s->pci_dev)
|
1849 |
pci_device_save(s->pci_dev, f); |
1850 |
|
1851 |
qemu_put_be32s(f, &s->latch); |
1852 |
qemu_put_8s(f, &s->sr_index); |
1853 |
qemu_put_buffer(f, s->sr, 8);
|
1854 |
qemu_put_8s(f, &s->gr_index); |
1855 |
qemu_put_buffer(f, s->gr, 16);
|
1856 |
qemu_put_8s(f, &s->ar_index); |
1857 |
qemu_put_buffer(f, s->ar, 21);
|
1858 |
qemu_put_be32(f, s->ar_flip_flop); |
1859 |
qemu_put_8s(f, &s->cr_index); |
1860 |
qemu_put_buffer(f, s->cr, 256);
|
1861 |
qemu_put_8s(f, &s->msr); |
1862 |
qemu_put_8s(f, &s->fcr); |
1863 |
qemu_put_byte(f, s->st00); |
1864 |
qemu_put_8s(f, &s->st01); |
1865 |
|
1866 |
qemu_put_8s(f, &s->dac_state); |
1867 |
qemu_put_8s(f, &s->dac_sub_index); |
1868 |
qemu_put_8s(f, &s->dac_read_index); |
1869 |
qemu_put_8s(f, &s->dac_write_index); |
1870 |
qemu_put_buffer(f, s->dac_cache, 3);
|
1871 |
qemu_put_buffer(f, s->palette, 768);
|
1872 |
|
1873 |
qemu_put_be32(f, s->bank_offset); |
1874 |
#ifdef CONFIG_BOCHS_VBE
|
1875 |
qemu_put_byte(f, 1);
|
1876 |
qemu_put_be16s(f, &s->vbe_index); |
1877 |
for(i = 0; i < VBE_DISPI_INDEX_NB; i++) |
1878 |
qemu_put_be16s(f, &s->vbe_regs[i]); |
1879 |
qemu_put_be32s(f, &s->vbe_start_addr); |
1880 |
qemu_put_be32s(f, &s->vbe_line_offset); |
1881 |
qemu_put_be32s(f, &s->vbe_bank_mask); |
1882 |
#else
|
1883 |
qemu_put_byte(f, 0);
|
1884 |
#endif
|
1885 |
} |
1886 |
|
1887 |
static int vga_load(QEMUFile *f, void *opaque, int version_id) |
1888 |
{ |
1889 |
VGAState *s = opaque; |
1890 |
int is_vbe, i, ret;
|
1891 |
|
1892 |
if (version_id > 2) |
1893 |
return -EINVAL;
|
1894 |
|
1895 |
if (s->pci_dev && version_id >= 2) { |
1896 |
ret = pci_device_load(s->pci_dev, f); |
1897 |
if (ret < 0) |
1898 |
return ret;
|
1899 |
} |
1900 |
|
1901 |
qemu_get_be32s(f, &s->latch); |
1902 |
qemu_get_8s(f, &s->sr_index); |
1903 |
qemu_get_buffer(f, s->sr, 8);
|
1904 |
qemu_get_8s(f, &s->gr_index); |
1905 |
qemu_get_buffer(f, s->gr, 16);
|
1906 |
qemu_get_8s(f, &s->ar_index); |
1907 |
qemu_get_buffer(f, s->ar, 21);
|
1908 |
s->ar_flip_flop=qemu_get_be32(f); |
1909 |
qemu_get_8s(f, &s->cr_index); |
1910 |
qemu_get_buffer(f, s->cr, 256);
|
1911 |
qemu_get_8s(f, &s->msr); |
1912 |
qemu_get_8s(f, &s->fcr); |
1913 |
qemu_get_8s(f, &s->st00); |
1914 |
qemu_get_8s(f, &s->st01); |
1915 |
|
1916 |
qemu_get_8s(f, &s->dac_state); |
1917 |
qemu_get_8s(f, &s->dac_sub_index); |
1918 |
qemu_get_8s(f, &s->dac_read_index); |
1919 |
qemu_get_8s(f, &s->dac_write_index); |
1920 |
qemu_get_buffer(f, s->dac_cache, 3);
|
1921 |
qemu_get_buffer(f, s->palette, 768);
|
1922 |
|
1923 |
s->bank_offset=qemu_get_be32(f); |
1924 |
is_vbe = qemu_get_byte(f); |
1925 |
#ifdef CONFIG_BOCHS_VBE
|
1926 |
if (!is_vbe)
|
1927 |
return -EINVAL;
|
1928 |
qemu_get_be16s(f, &s->vbe_index); |
1929 |
for(i = 0; i < VBE_DISPI_INDEX_NB; i++) |
1930 |
qemu_get_be16s(f, &s->vbe_regs[i]); |
1931 |
qemu_get_be32s(f, &s->vbe_start_addr); |
1932 |
qemu_get_be32s(f, &s->vbe_line_offset); |
1933 |
qemu_get_be32s(f, &s->vbe_bank_mask); |
1934 |
#else
|
1935 |
if (is_vbe)
|
1936 |
return -EINVAL;
|
1937 |
#endif
|
1938 |
|
1939 |
/* force refresh */
|
1940 |
s->graphic_mode = -1;
|
1941 |
return 0; |
1942 |
} |
1943 |
|
1944 |
typedef struct PCIVGAState { |
1945 |
PCIDevice dev; |
1946 |
VGAState vga_state; |
1947 |
} PCIVGAState; |
1948 |
|
1949 |
static void vga_map(PCIDevice *pci_dev, int region_num, |
1950 |
uint32_t addr, uint32_t size, int type)
|
1951 |
{ |
1952 |
PCIVGAState *d = (PCIVGAState *)pci_dev; |
1953 |
VGAState *s = &d->vga_state; |
1954 |
if (region_num == PCI_ROM_SLOT) {
|
1955 |
cpu_register_physical_memory(addr, s->bios_size, s->bios_offset); |
1956 |
} else {
|
1957 |
cpu_register_physical_memory(addr, s->vram_size, s->vram_offset); |
1958 |
} |
1959 |
} |
1960 |
|
1961 |
void vga_common_init(VGAState *s, DisplayState *ds, uint8_t *vga_ram_base,
|
1962 |
unsigned long vga_ram_offset, int vga_ram_size) |
1963 |
{ |
1964 |
int i, j, v, b;
|
1965 |
|
1966 |
for(i = 0;i < 256; i++) { |
1967 |
v = 0;
|
1968 |
for(j = 0; j < 8; j++) { |
1969 |
v |= ((i >> j) & 1) << (j * 4); |
1970 |
} |
1971 |
expand4[i] = v; |
1972 |
|
1973 |
v = 0;
|
1974 |
for(j = 0; j < 4; j++) { |
1975 |
v |= ((i >> (2 * j)) & 3) << (j * 4); |
1976 |
} |
1977 |
expand2[i] = v; |
1978 |
} |
1979 |
for(i = 0; i < 16; i++) { |
1980 |
v = 0;
|
1981 |
for(j = 0; j < 4; j++) { |
1982 |
b = ((i >> j) & 1);
|
1983 |
v |= b << (2 * j);
|
1984 |
v |= b << (2 * j + 1); |
1985 |
} |
1986 |
expand4to8[i] = v; |
1987 |
} |
1988 |
|
1989 |
vga_reset(s); |
1990 |
|
1991 |
s->vram_ptr = vga_ram_base; |
1992 |
s->vram_offset = vga_ram_offset; |
1993 |
s->vram_size = vga_ram_size; |
1994 |
s->ds = ds; |
1995 |
s->get_bpp = vga_get_bpp; |
1996 |
s->get_offsets = vga_get_offsets; |
1997 |
s->get_resolution = vga_get_resolution; |
1998 |
s->update = vga_update_display; |
1999 |
s->invalidate = vga_invalidate_display; |
2000 |
s->screen_dump = vga_screen_dump; |
2001 |
s->text_update = vga_update_text; |
2002 |
} |
2003 |
|
2004 |
/* used by both ISA and PCI */
|
2005 |
void vga_init(VGAState *s)
|
2006 |
{ |
2007 |
int vga_io_memory;
|
2008 |
|
2009 |
register_savevm("vga", 0, 2, vga_save, vga_load, s); |
2010 |
|
2011 |
register_ioport_write(0x3c0, 16, 1, vga_ioport_write, s); |
2012 |
|
2013 |
register_ioport_write(0x3b4, 2, 1, vga_ioport_write, s); |
2014 |
register_ioport_write(0x3d4, 2, 1, vga_ioport_write, s); |
2015 |
register_ioport_write(0x3ba, 1, 1, vga_ioport_write, s); |
2016 |
register_ioport_write(0x3da, 1, 1, vga_ioport_write, s); |
2017 |
|
2018 |
register_ioport_read(0x3c0, 16, 1, vga_ioport_read, s); |
2019 |
|
2020 |
register_ioport_read(0x3b4, 2, 1, vga_ioport_read, s); |
2021 |
register_ioport_read(0x3d4, 2, 1, vga_ioport_read, s); |
2022 |
register_ioport_read(0x3ba, 1, 1, vga_ioport_read, s); |
2023 |
register_ioport_read(0x3da, 1, 1, vga_ioport_read, s); |
2024 |
s->bank_offset = 0;
|
2025 |
|
2026 |
#ifdef CONFIG_BOCHS_VBE
|
2027 |
s->vbe_regs[VBE_DISPI_INDEX_ID] = VBE_DISPI_ID0; |
2028 |
s->vbe_bank_mask = ((s->vram_size >> 16) - 1); |
2029 |
#if defined (TARGET_I386)
|
2030 |
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s); |
2031 |
register_ioport_read(0x1cf, 1, 2, vbe_ioport_read_data, s); |
2032 |
|
2033 |
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s); |
2034 |
register_ioport_write(0x1cf, 1, 2, vbe_ioport_write_data, s); |
2035 |
|
2036 |
/* old Bochs IO ports */
|
2037 |
register_ioport_read(0xff80, 1, 2, vbe_ioport_read_index, s); |
2038 |
register_ioport_read(0xff81, 1, 2, vbe_ioport_read_data, s); |
2039 |
|
2040 |
register_ioport_write(0xff80, 1, 2, vbe_ioport_write_index, s); |
2041 |
register_ioport_write(0xff81, 1, 2, vbe_ioport_write_data, s); |
2042 |
#else
|
2043 |
register_ioport_read(0x1ce, 1, 2, vbe_ioport_read_index, s); |
2044 |
register_ioport_read(0x1d0, 1, 2, vbe_ioport_read_data, s); |
2045 |
|
2046 |
register_ioport_write(0x1ce, 1, 2, vbe_ioport_write_index, s); |
2047 |
register_ioport_write(0x1d0, 1, 2, vbe_ioport_write_data, s); |
2048 |
#endif
|
2049 |
#endif /* CONFIG_BOCHS_VBE */ |
2050 |
|
2051 |
vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
|
2052 |
cpu_register_physical_memory(isa_mem_base + 0x000a0000, 0x20000, |
2053 |
vga_io_memory); |
2054 |
} |
2055 |
|
2056 |
/* Memory mapped interface */
|
2057 |
static uint32_t vga_mm_readb (void *opaque, target_phys_addr_t addr) |
2058 |
{ |
2059 |
VGAState *s = opaque; |
2060 |
|
2061 |
return vga_ioport_read(s, (addr - s->base_ctrl) >> s->it_shift) & 0xff; |
2062 |
} |
2063 |
|
2064 |
static void vga_mm_writeb (void *opaque, |
2065 |
target_phys_addr_t addr, uint32_t value) |
2066 |
{ |
2067 |
VGAState *s = opaque; |
2068 |
|
2069 |
vga_ioport_write(s, (addr - s->base_ctrl) >> s->it_shift, value & 0xff);
|
2070 |
} |
2071 |
|
2072 |
static uint32_t vga_mm_readw (void *opaque, target_phys_addr_t addr) |
2073 |
{ |
2074 |
VGAState *s = opaque; |
2075 |
|
2076 |
return vga_ioport_read(s, (addr - s->base_ctrl) >> s->it_shift) & 0xffff; |
2077 |
} |
2078 |
|
2079 |
static void vga_mm_writew (void *opaque, |
2080 |
target_phys_addr_t addr, uint32_t value) |
2081 |
{ |
2082 |
VGAState *s = opaque; |
2083 |
|
2084 |
vga_ioport_write(s, (addr - s->base_ctrl) >> s->it_shift, value & 0xffff);
|
2085 |
} |
2086 |
|
2087 |
static uint32_t vga_mm_readl (void *opaque, target_phys_addr_t addr) |
2088 |
{ |
2089 |
VGAState *s = opaque; |
2090 |
|
2091 |
return vga_ioport_read(s, (addr - s->base_ctrl) >> s->it_shift);
|
2092 |
} |
2093 |
|
2094 |
static void vga_mm_writel (void *opaque, |
2095 |
target_phys_addr_t addr, uint32_t value) |
2096 |
{ |
2097 |
VGAState *s = opaque; |
2098 |
|
2099 |
vga_ioport_write(s, (addr - s->base_ctrl) >> s->it_shift, value); |
2100 |
} |
2101 |
|
2102 |
static CPUReadMemoryFunc *vga_mm_read_ctrl[] = {
|
2103 |
&vga_mm_readb, |
2104 |
&vga_mm_readw, |
2105 |
&vga_mm_readl, |
2106 |
}; |
2107 |
|
2108 |
static CPUWriteMemoryFunc *vga_mm_write_ctrl[] = {
|
2109 |
&vga_mm_writeb, |
2110 |
&vga_mm_writew, |
2111 |
&vga_mm_writel, |
2112 |
}; |
2113 |
|
2114 |
static void vga_mm_init(VGAState *s, target_phys_addr_t vram_base, |
2115 |
target_phys_addr_t ctrl_base, int it_shift)
|
2116 |
{ |
2117 |
int s_ioport_ctrl, vga_io_memory;
|
2118 |
|
2119 |
s->base_ctrl = ctrl_base; |
2120 |
s->it_shift = it_shift; |
2121 |
s_ioport_ctrl = cpu_register_io_memory(0, vga_mm_read_ctrl, vga_mm_write_ctrl, s);
|
2122 |
vga_io_memory = cpu_register_io_memory(0, vga_mem_read, vga_mem_write, s);
|
2123 |
|
2124 |
register_savevm("vga", 0, 2, vga_save, vga_load, s); |
2125 |
|
2126 |
cpu_register_physical_memory(ctrl_base, 0x100000, s_ioport_ctrl);
|
2127 |
s->bank_offset = 0;
|
2128 |
cpu_register_physical_memory(vram_base + 0x000a0000, 0x20000, vga_io_memory); |
2129 |
} |
2130 |
|
2131 |
int isa_vga_init(DisplayState *ds, uint8_t *vga_ram_base,
|
2132 |
unsigned long vga_ram_offset, int vga_ram_size) |
2133 |
{ |
2134 |
VGAState *s; |
2135 |
|
2136 |
s = qemu_mallocz(sizeof(VGAState));
|
2137 |
if (!s)
|
2138 |
return -1; |
2139 |
|
2140 |
vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size); |
2141 |
vga_init(s); |
2142 |
|
2143 |
graphic_console_init(s->ds, s->update, s->invalidate, s->screen_dump, |
2144 |
s->text_update, s); |
2145 |
|
2146 |
#ifdef CONFIG_BOCHS_VBE
|
2147 |
/* XXX: use optimized standard vga accesses */
|
2148 |
cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS, |
2149 |
vga_ram_size, vga_ram_offset); |
2150 |
#endif
|
2151 |
return 0; |
2152 |
} |
2153 |
|
2154 |
int isa_vga_mm_init(DisplayState *ds, uint8_t *vga_ram_base,
|
2155 |
unsigned long vga_ram_offset, int vga_ram_size, |
2156 |
target_phys_addr_t vram_base, target_phys_addr_t ctrl_base, |
2157 |
int it_shift)
|
2158 |
{ |
2159 |
VGAState *s; |
2160 |
|
2161 |
s = qemu_mallocz(sizeof(VGAState));
|
2162 |
if (!s)
|
2163 |
return -1; |
2164 |
|
2165 |
vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size); |
2166 |
vga_mm_init(s, vram_base, ctrl_base, it_shift); |
2167 |
|
2168 |
graphic_console_init(s->ds, s->update, s->invalidate, s->screen_dump, |
2169 |
s->text_update, s); |
2170 |
|
2171 |
#ifdef CONFIG_BOCHS_VBE
|
2172 |
/* XXX: use optimized standard vga accesses */
|
2173 |
cpu_register_physical_memory(VBE_DISPI_LFB_PHYSICAL_ADDRESS, |
2174 |
vga_ram_size, vga_ram_offset); |
2175 |
#endif
|
2176 |
return 0; |
2177 |
} |
2178 |
|
2179 |
int pci_vga_init(PCIBus *bus, DisplayState *ds, uint8_t *vga_ram_base,
|
2180 |
unsigned long vga_ram_offset, int vga_ram_size, |
2181 |
unsigned long vga_bios_offset, int vga_bios_size) |
2182 |
{ |
2183 |
PCIVGAState *d; |
2184 |
VGAState *s; |
2185 |
uint8_t *pci_conf; |
2186 |
|
2187 |
d = (PCIVGAState *)pci_register_device(bus, "VGA",
|
2188 |
sizeof(PCIVGAState),
|
2189 |
-1, NULL, NULL); |
2190 |
if (!d)
|
2191 |
return -1; |
2192 |
s = &d->vga_state; |
2193 |
|
2194 |
vga_common_init(s, ds, vga_ram_base, vga_ram_offset, vga_ram_size); |
2195 |
vga_init(s); |
2196 |
|
2197 |
graphic_console_init(s->ds, s->update, s->invalidate, s->screen_dump, |
2198 |
s->text_update, s); |
2199 |
|
2200 |
s->pci_dev = &d->dev; |
2201 |
|
2202 |
pci_conf = d->dev.config; |
2203 |
pci_conf[0x00] = 0x34; // dummy VGA (same as Bochs ID) |
2204 |
pci_conf[0x01] = 0x12; |
2205 |
pci_conf[0x02] = 0x11; |
2206 |
pci_conf[0x03] = 0x11; |
2207 |
pci_conf[0x0a] = 0x00; // VGA controller |
2208 |
pci_conf[0x0b] = 0x03; |
2209 |
pci_conf[0x0e] = 0x00; // header_type |
2210 |
|
2211 |
/* XXX: vga_ram_size must be a power of two */
|
2212 |
pci_register_io_region(&d->dev, 0, vga_ram_size,
|
2213 |
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map); |
2214 |
if (vga_bios_size != 0) { |
2215 |
unsigned int bios_total_size; |
2216 |
s->bios_offset = vga_bios_offset; |
2217 |
s->bios_size = vga_bios_size; |
2218 |
/* must be a power of two */
|
2219 |
bios_total_size = 1;
|
2220 |
while (bios_total_size < vga_bios_size)
|
2221 |
bios_total_size <<= 1;
|
2222 |
pci_register_io_region(&d->dev, PCI_ROM_SLOT, bios_total_size, |
2223 |
PCI_ADDRESS_SPACE_MEM_PREFETCH, vga_map); |
2224 |
} |
2225 |
return 0; |
2226 |
} |
2227 |
|
2228 |
/********************************************************/
|
2229 |
/* vga screen dump */
|
2230 |
|
2231 |
static int vga_save_w, vga_save_h; |
2232 |
|
2233 |
static void vga_save_dpy_update(DisplayState *s, |
2234 |
int x, int y, int w, int h) |
2235 |
{ |
2236 |
} |
2237 |
|
2238 |
static void vga_save_dpy_resize(DisplayState *s, int w, int h) |
2239 |
{ |
2240 |
s->linesize = w * 4;
|
2241 |
s->data = qemu_malloc(h * s->linesize); |
2242 |
vga_save_w = w; |
2243 |
vga_save_h = h; |
2244 |
} |
2245 |
|
2246 |
static void vga_save_dpy_refresh(DisplayState *s) |
2247 |
{ |
2248 |
} |
2249 |
|
2250 |
int ppm_save(const char *filename, uint8_t *data, |
2251 |
int w, int h, int linesize) |
2252 |
{ |
2253 |
FILE *f; |
2254 |
uint8_t *d, *d1; |
2255 |
unsigned int v; |
2256 |
int y, x;
|
2257 |
|
2258 |
f = fopen(filename, "wb");
|
2259 |
if (!f)
|
2260 |
return -1; |
2261 |
fprintf(f, "P6\n%d %d\n%d\n",
|
2262 |
w, h, 255);
|
2263 |
d1 = data; |
2264 |
for(y = 0; y < h; y++) { |
2265 |
d = d1; |
2266 |
for(x = 0; x < w; x++) { |
2267 |
v = *(uint32_t *)d; |
2268 |
fputc((v >> 16) & 0xff, f); |
2269 |
fputc((v >> 8) & 0xff, f); |
2270 |
fputc((v) & 0xff, f);
|
2271 |
d += 4;
|
2272 |
} |
2273 |
d1 += linesize; |
2274 |
} |
2275 |
fclose(f); |
2276 |
return 0; |
2277 |
} |
2278 |
|
2279 |
/* save the vga display in a PPM image even if no display is
|
2280 |
available */
|
2281 |
static void vga_screen_dump(void *opaque, const char *filename) |
2282 |
{ |
2283 |
VGAState *s = (VGAState *)opaque; |
2284 |
DisplayState *saved_ds, ds1, *ds = &ds1; |
2285 |
|
2286 |
/* XXX: this is a little hackish */
|
2287 |
vga_invalidate_display(s); |
2288 |
saved_ds = s->ds; |
2289 |
|
2290 |
memset(ds, 0, sizeof(DisplayState)); |
2291 |
ds->dpy_update = vga_save_dpy_update; |
2292 |
ds->dpy_resize = vga_save_dpy_resize; |
2293 |
ds->dpy_refresh = vga_save_dpy_refresh; |
2294 |
ds->depth = 32;
|
2295 |
|
2296 |
s->ds = ds; |
2297 |
s->graphic_mode = -1;
|
2298 |
vga_update_display(s); |
2299 |
|
2300 |
if (ds->data) {
|
2301 |
ppm_save(filename, ds->data, vga_save_w, vga_save_h, |
2302 |
s->ds->linesize); |
2303 |
qemu_free(ds->data); |
2304 |
} |
2305 |
s->ds = saved_ds; |
2306 |
} |