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Diffstat (limited to 'tools/ioemu/iodev/vga.h')
| -rw-r--r-- | tools/ioemu/iodev/vga.h | 300 |
1 files changed, 300 insertions, 0 deletions
diff --git a/tools/ioemu/iodev/vga.h b/tools/ioemu/iodev/vga.h new file mode 100644 index 0000000000..cafb60cd6b --- /dev/null +++ b/tools/ioemu/iodev/vga.h @@ -0,0 +1,300 @@ +///////////////////////////////////////////////////////////////////////// +// $Id: vga.h,v 1.36 2003/12/31 10:33:27 vruppert Exp $ +///////////////////////////////////////////////////////////////////////// +// +// Copyright (C) 2002 MandrakeSoft S.A. +// +// MandrakeSoft S.A. +// 43, rue d'Aboukir +// 75002 Paris - France +// http://www.linux-mandrake.com/ +// http://www.mandrakesoft.com/ +// +// This library is free software; you can redistribute it and/or +// modify it under the terms of the GNU Lesser General Public +// License as published by the Free Software Foundation; either +// version 2 of the License, or (at your option) any later version. +// +// This library is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// Lesser General Public License for more details. +// +// You should have received a copy of the GNU Lesser General Public +// License along with this library; if not, write to the Free Software +// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +#if BX_SUPPORT_VBE + #define VBE_DISPI_TOTAL_VIDEO_MEMORY_MB 4 + + #define VBE_DISPI_BANK_ADDRESS 0xA0000 + #define VBE_DISPI_BANK_SIZE_KB 64 + + #define VBE_DISPI_MAX_XRES 1024 + #define VBE_DISPI_MAX_YRES 768 + + #define VBE_DISPI_IOPORT_INDEX 0x01CE + #define VBE_DISPI_IOPORT_DATA 0x01CF + + #define VBE_DISPI_IOPORT_INDEX_OLD 0xFF80 + #define VBE_DISPI_IOPORT_DATA_OLD 0xFF81 + + #define VBE_DISPI_INDEX_ID 0x0 + #define VBE_DISPI_INDEX_XRES 0x1 + #define VBE_DISPI_INDEX_YRES 0x2 + #define VBE_DISPI_INDEX_BPP 0x3 + #define VBE_DISPI_INDEX_ENABLE 0x4 + #define VBE_DISPI_INDEX_BANK 0x5 + #define VBE_DISPI_INDEX_VIRT_WIDTH 0x6 + #define VBE_DISPI_INDEX_VIRT_HEIGHT 0x7 + #define VBE_DISPI_INDEX_X_OFFSET 0x8 + #define VBE_DISPI_INDEX_Y_OFFSET 0x9 + + #define VBE_DISPI_ID0 0xB0C0 + #define VBE_DISPI_ID1 0xB0C1 + #define VBE_DISPI_ID2 0xB0C2 + + #define VBE_DISPI_BPP_4 0x04 + #define VBE_DISPI_BPP_8 0x08 + #define VBE_DISPI_BPP_15 0x0F + #define VBE_DISPI_BPP_16 0x10 + #define VBE_DISPI_BPP_24 0x18 + #define VBE_DISPI_BPP_32 0x20 + + #define VBE_DISPI_DISABLED 0x00 + #define VBE_DISPI_ENABLED 0x01 + #define VBE_DISPI_NOCLEARMEM 0x80 + #define VBE_DISPI_LFB_ENABLED 0x40 + + #define VBE_DISPI_LFB_PHYSICAL_ADDRESS 0xE0000000 + + +#define VBE_DISPI_TOTAL_VIDEO_MEMORY_KB (VBE_DISPI_TOTAL_VIDEO_MEMORY_MB * 1024) +#define VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES (VBE_DISPI_TOTAL_VIDEO_MEMORY_KB * 1024) + +#define BX_MAX_XRES VBE_DISPI_MAX_XRES +#define BX_MAX_YRES VBE_DISPI_MAX_YRES + +#else + +#define BX_MAX_XRES 800 +#define BX_MAX_YRES 600 + +#endif //BX_SUPPORT_VBE + +#define X_TILESIZE 16 +#define Y_TILESIZE 24 +#define BX_NUM_X_TILES (BX_MAX_XRES /X_TILESIZE) +#define BX_NUM_Y_TILES (BX_MAX_YRES /Y_TILESIZE) + +// Support varying number of rows of text. This used to +// be limited to only 25 lines. +#define BX_MAX_TEXT_LINES 100 + +#if BX_USE_VGA_SMF +# define BX_VGA_SMF static +# define BX_VGA_THIS theVga-> +#else +# define BX_VGA_SMF +# define BX_VGA_THIS this-> +#endif + + +class bx_vga_c : public bx_vga_stub_c { +public: + + bx_vga_c(void); + ~bx_vga_c(void); + virtual void init(void); + virtual void bios_init(void); + virtual void reset(unsigned type); + virtual Bit8u mem_read(Bit32u addr); + // Note: either leave value of type Bit8u, or mask it when + // used to 8 bits, in memory.cc + virtual void mem_write(Bit32u addr, Bit8u value); + virtual void trigger_timer(void *this_ptr); + +#if BX_SUPPORT_VBE + BX_VGA_SMF Bit8u vbe_mem_read(Bit32u addr) BX_CPP_AttrRegparmN(1); + BX_VGA_SMF void vbe_mem_write(Bit32u addr, Bit8u value) BX_CPP_AttrRegparmN(2); +#endif + + virtual void redraw_area(unsigned x0, unsigned y0, + unsigned width, unsigned height); + + virtual void set_update_interval (unsigned interval); + virtual void get_text_snapshot(Bit8u **text_snapshot, unsigned *txHeight, + unsigned *txWidth); + virtual Bit8u get_actl_palette_idx(Bit8u index); + +private: + + static Bit32u read_handler(void *this_ptr, Bit32u address, unsigned io_len); + static void write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len); + static void write_handler_no_log(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len); + +#if BX_SUPPORT_VBE + static Bit32u vbe_read_handler(void *this_ptr, Bit32u address, unsigned io_len); + static void vbe_write_handler(void *this_ptr, Bit32u address, Bit32u value, unsigned io_len); +#endif + + struct { + struct { + bx_bool color_emulation; // 1=color emulation, base address = 3Dx + // 0=mono emulation, base address = 3Bx + bx_bool enable_ram; // enable CPU access to video memory if set + Bit8u clock_select; // 0=25Mhz 1=28Mhz + bx_bool select_high_bank; // when in odd/even modes, select + // high 64k bank if set + bx_bool horiz_sync_pol; // bit6: negative if set + bx_bool vert_sync_pol; // bit7: negative if set + // bit7,bit6 represent number of lines on display: + // 0 = reserved + // 1 = 400 lines + // 2 = 350 lines + // 3 - 480 lines + } misc_output; + + struct { + Bit8u address; + Bit8u reg[0x19]; + } CRTC; + + struct { + bx_bool flip_flop; /* 0 = address, 1 = data-write */ + unsigned address; /* register number */ + bx_bool video_enabled; + Bit8u palette_reg[16]; + Bit8u overscan_color; + Bit8u color_plane_enable; + Bit8u horiz_pel_panning; + Bit8u color_select; + struct { + bx_bool graphics_alpha; + bx_bool display_type; + bx_bool enable_line_graphics; + bx_bool blink_intensity; + bx_bool pixel_panning_compat; + bx_bool pixel_clock_select; + bx_bool internal_palette_size; + } mode_ctrl; + } attribute_ctrl; + + struct { + Bit8u write_data_register; + Bit8u write_data_cycle; /* 0, 1, 2 */ + Bit8u read_data_register; + Bit8u read_data_cycle; /* 0, 1, 2 */ + Bit8u dac_state; + struct { + Bit8u red; + Bit8u green; + Bit8u blue; + } data[256]; + Bit8u mask; + } pel; + + + struct { + Bit8u index; + Bit8u set_reset; + Bit8u enable_set_reset; + Bit8u color_compare; + Bit8u data_rotate; + Bit8u raster_op; + Bit8u read_map_select; + Bit8u write_mode; + bx_bool read_mode; + bx_bool odd_even; + bx_bool chain_odd_even; + Bit8u shift_reg; + bx_bool graphics_alpha; + Bit8u memory_mapping; /* 0 = use A0000-BFFFF + * 1 = use A0000-AFFFF EGA/VGA graphics modes + * 2 = use B0000-B7FFF Monochrome modes + * 3 = use B8000-BFFFF CGA modes + */ + Bit8u color_dont_care; + Bit8u bitmask; + Bit8u latch[4]; + } graphics_ctrl; + + struct { + Bit8u index; + Bit8u map_mask; + bx_bool map_mask_bit[4]; + bx_bool reset1; + bx_bool reset2; + Bit8u reg1; + Bit8u char_map_select; + bx_bool extended_mem; + bx_bool odd_even; + bx_bool chain_four; + } sequencer; + + bx_bool vga_mem_updated; + unsigned x_tilesize; + unsigned y_tilesize; + unsigned line_offset; + unsigned line_compare; + unsigned vertical_display_end; + bx_bool vga_tile_updated[BX_NUM_X_TILES][BX_NUM_Y_TILES]; + Bit8u vga_memory[256 * 1024]; + Bit8u text_snapshot[32 * 1024]; // current text snapshot + Bit8u rgb[3 * 256]; + Bit8u tile[X_TILESIZE * Y_TILESIZE * 4]; /**< Currently allocates the tile as large as needed. */ + Bit16u charmap_address; + bx_bool x_dotclockdiv2; + bx_bool y_doublescan; + +#if BX_SUPPORT_VBE + Bit8u vbe_memory[VBE_DISPI_TOTAL_VIDEO_MEMORY_BYTES]; + Bit16u vbe_cur_dispi; + Bit16u vbe_xres; + Bit16u vbe_yres; + Bit16u vbe_bpp; + Bit16u vbe_bank; + bx_bool vbe_enabled; + Bit16u vbe_curindex; + Bit32u vbe_visable_screen_size; /**< in bytes */ + Bit16u vbe_offset_x; /**< Virtual screen x start (in pixels) */ + Bit16u vbe_offset_y; /**< Virtual screen y start (in pixels) */ + Bit16u vbe_virtual_xres; + Bit16u vbe_virtual_yres; + Bit16u vbe_line_byte_width; /**< For dealing with bpp>8, this is they width of a line in bytes. */ + Bit32u vbe_virtual_start; /**< For dealing with bpp>8, this is where the virtual screen starts. */ + Bit8u vbe_bpp_multiplier; /**< We have to save this b/c sometimes we need to recalculate stuff with it. */ + bx_bool vbe_lfb_enabled; +#endif + } s; // state information + + +#if !BX_USE_VGA_SMF + Bit32u read(Bit32u address, unsigned io_len); + void write(Bit32u address, Bit32u value, unsigned io_len, bx_bool no_log); +#else + void write(Bit32u address, Bit32u value, unsigned io_len, bx_bool no_log); +#endif + +#if BX_SUPPORT_VBE + +#if !BX_USE_VGA_SMF + Bit32u vbe_read(Bit32u address, unsigned io_len); + void vbe_write(Bit32u address, Bit32u value, unsigned io_len, bx_bool no_log); +#else + void vbe_write(Bit32u address, Bit32u value, unsigned io_len, bx_bool no_log); +#endif +#endif + + int timer_id; + + public: + static void timer_handler(void *); + BX_VGA_SMF void timer(void); + + private: + BX_VGA_SMF void update(void); + BX_VGA_SMF void dump_status(void); + BX_VGA_SMF void determine_screen_dimensions(unsigned *piHeight, + unsigned *piWidth); + }; |