Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/include/video/vga.h -- standard VGA chipset interaction |
| 3 | * |
| 4 | * Copyright 1999 Jeff Garzik <jgarzik@pobox.com> |
| 5 | * |
| 6 | * Copyright history from vga16fb.c: |
Amarjargal Gundjalam | a076a3d | 2022-10-25 22:28:10 +0800 | [diff] [blame] | 7 | * Copyright 1999 Ben Pfaff and Petr Vandrovec |
| 8 | * Based on VGA info at http://www.osdever.net/FreeVGA/home.htm |
| 9 | * Based on VESA framebuffer (c) 1998 Gerd Knorr |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 10 | * |
| 11 | * This file is subject to the terms and conditions of the GNU General |
| 12 | * Public License. See the file COPYING in the main directory of this |
| 13 | * archive for more details. |
| 14 | * |
| 15 | */ |
| 16 | |
Markus Armbruster | 58ea30f | 2019-03-15 15:51:20 +0100 | [diff] [blame] | 17 | #ifndef HW_VGA_REGS_H |
| 18 | #define HW_VGA_REGS_H |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 19 | |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 20 | /* Some of the code below is taken from SVGAlib. The original, |
| 21 | unmodified copyright notice for that code is below. */ |
| 22 | /* VGAlib version 1.2 - (c) 1993 Tommy Frandsen */ |
| 23 | /* */ |
| 24 | /* This library is free software; you can redistribute it and/or */ |
| 25 | /* modify it without any restrictions. This library is distributed */ |
| 26 | /* in the hope that it will be useful, but without any warranty. */ |
| 27 | |
| 28 | /* Multi-chipset support Copyright 1993 Harm Hanemaayer */ |
| 29 | /* partially copyrighted (C) 1993 by Hartmut Schirmer */ |
| 30 | |
| 31 | /* VGA data register ports */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 32 | #define VGA_CRT_DC 0x3D5 /* CRT Controller Data Register - color emulation */ |
| 33 | #define VGA_CRT_DM 0x3B5 /* CRT Controller Data Register - mono emulation */ |
| 34 | #define VGA_ATT_R 0x3C1 /* Attribute Controller Data Read Register */ |
| 35 | #define VGA_ATT_W 0x3C0 /* Attribute Controller Data Write Register */ |
| 36 | #define VGA_GFX_D 0x3CF /* Graphics Controller Data Register */ |
| 37 | #define VGA_SEQ_D 0x3C5 /* Sequencer Data Register */ |
| 38 | #define VGA_MIS_R 0x3CC /* Misc Output Read Register */ |
| 39 | #define VGA_MIS_W 0x3C2 /* Misc Output Write Register */ |
| 40 | #define VGA_FTC_R 0x3CA /* Feature Control Read Register */ |
| 41 | #define VGA_IS1_RC 0x3DA /* Input Status Register 1 - color emulation */ |
| 42 | #define VGA_IS1_RM 0x3BA /* Input Status Register 1 - mono emulation */ |
| 43 | #define VGA_PEL_D 0x3C9 /* PEL Data Register */ |
| 44 | #define VGA_PEL_MSK 0x3C6 /* PEL mask register */ |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 45 | |
| 46 | /* EGA-specific registers */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 47 | #define EGA_GFX_E0 0x3CC /* Graphics enable processor 0 */ |
| 48 | #define EGA_GFX_E1 0x3CA /* Graphics enable processor 1 */ |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 49 | |
| 50 | /* VGA index register ports */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 51 | #define VGA_CRT_IC 0x3D4 /* CRT Controller Index - color emulation */ |
| 52 | #define VGA_CRT_IM 0x3B4 /* CRT Controller Index - mono emulation */ |
| 53 | #define VGA_ATT_IW 0x3C0 /* Attribute Controller Index & Data Write Register */ |
| 54 | #define VGA_GFX_I 0x3CE /* Graphics Controller Index */ |
| 55 | #define VGA_SEQ_I 0x3C4 /* Sequencer Index */ |
| 56 | #define VGA_PEL_IW 0x3C8 /* PEL Write Index */ |
| 57 | #define VGA_PEL_IR 0x3C7 /* PEL Read Index */ |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 58 | |
| 59 | /* standard VGA indexes max counts */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 60 | #define VGA_CRT_C 0x19 /* Number of CRT Controller Registers */ |
| 61 | #define VGA_ATT_C 0x15 /* Number of Attribute Controller Registers */ |
| 62 | #define VGA_GFX_C 0x09 /* Number of Graphics Controller Registers */ |
| 63 | #define VGA_SEQ_C 0x05 /* Number of Sequencer Registers */ |
| 64 | #define VGA_MIS_C 0x01 /* Number of Misc Output Register */ |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 65 | |
| 66 | /* VGA misc register bit masks */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 67 | #define VGA_MIS_COLOR 0x01 |
| 68 | #define VGA_MIS_ENB_MEM_ACCESS 0x02 |
| 69 | #define VGA_MIS_DCLK_28322_720 0x04 |
| 70 | #define VGA_MIS_ENB_PLL_LOAD (0x04 | 0x08) |
| 71 | #define VGA_MIS_SEL_HIGH_PAGE 0x20 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 72 | |
| 73 | /* VGA CRT controller register indices */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 74 | #define VGA_CRTC_H_TOTAL 0 |
| 75 | #define VGA_CRTC_H_DISP 1 |
| 76 | #define VGA_CRTC_H_BLANK_START 2 |
| 77 | #define VGA_CRTC_H_BLANK_END 3 |
| 78 | #define VGA_CRTC_H_SYNC_START 4 |
| 79 | #define VGA_CRTC_H_SYNC_END 5 |
| 80 | #define VGA_CRTC_V_TOTAL 6 |
| 81 | #define VGA_CRTC_OVERFLOW 7 |
| 82 | #define VGA_CRTC_PRESET_ROW 8 |
| 83 | #define VGA_CRTC_MAX_SCAN 9 |
| 84 | #define VGA_CRTC_CURSOR_START 0x0A |
| 85 | #define VGA_CRTC_CURSOR_END 0x0B |
| 86 | #define VGA_CRTC_START_HI 0x0C |
| 87 | #define VGA_CRTC_START_LO 0x0D |
| 88 | #define VGA_CRTC_CURSOR_HI 0x0E |
| 89 | #define VGA_CRTC_CURSOR_LO 0x0F |
| 90 | #define VGA_CRTC_V_SYNC_START 0x10 |
| 91 | #define VGA_CRTC_V_SYNC_END 0x11 |
| 92 | #define VGA_CRTC_V_DISP_END 0x12 |
| 93 | #define VGA_CRTC_OFFSET 0x13 |
| 94 | #define VGA_CRTC_UNDERLINE 0x14 |
| 95 | #define VGA_CRTC_V_BLANK_START 0x15 |
| 96 | #define VGA_CRTC_V_BLANK_END 0x16 |
| 97 | #define VGA_CRTC_MODE 0x17 |
| 98 | #define VGA_CRTC_LINE_COMPARE 0x18 |
| 99 | #define VGA_CRTC_REGS VGA_CRT_C |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 100 | |
| 101 | /* VGA CRT controller bit masks */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 102 | #define VGA_CR11_LOCK_CR0_CR7 0x80 /* lock writes to CR0 - CR7 */ |
Paolo Bonzini | 4352626 | 2014-12-29 14:56:24 +0100 | [diff] [blame] | 103 | #define VGA_CR14_DW 0x40 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 104 | #define VGA_CR17_H_V_SIGNALS_ENABLED 0x80 |
Paolo Bonzini | 4352626 | 2014-12-29 14:56:24 +0100 | [diff] [blame] | 105 | #define VGA_CR17_WORD_BYTE 0x40 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 106 | |
| 107 | /* VGA attribute controller register indices */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 108 | #define VGA_ATC_PALETTE0 0x00 |
| 109 | #define VGA_ATC_PALETTE1 0x01 |
| 110 | #define VGA_ATC_PALETTE2 0x02 |
| 111 | #define VGA_ATC_PALETTE3 0x03 |
| 112 | #define VGA_ATC_PALETTE4 0x04 |
| 113 | #define VGA_ATC_PALETTE5 0x05 |
| 114 | #define VGA_ATC_PALETTE6 0x06 |
| 115 | #define VGA_ATC_PALETTE7 0x07 |
| 116 | #define VGA_ATC_PALETTE8 0x08 |
| 117 | #define VGA_ATC_PALETTE9 0x09 |
| 118 | #define VGA_ATC_PALETTEA 0x0A |
| 119 | #define VGA_ATC_PALETTEB 0x0B |
| 120 | #define VGA_ATC_PALETTEC 0x0C |
| 121 | #define VGA_ATC_PALETTED 0x0D |
| 122 | #define VGA_ATC_PALETTEE 0x0E |
| 123 | #define VGA_ATC_PALETTEF 0x0F |
| 124 | #define VGA_ATC_MODE 0x10 |
| 125 | #define VGA_ATC_OVERSCAN 0x11 |
| 126 | #define VGA_ATC_PLANE_ENABLE 0x12 |
| 127 | #define VGA_ATC_PEL 0x13 |
| 128 | #define VGA_ATC_COLOR_PAGE 0x14 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 129 | |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 130 | #define VGA_AR_ENABLE_DISPLAY 0x20 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 131 | |
| 132 | /* VGA sequencer register indices */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 133 | #define VGA_SEQ_RESET 0x00 |
| 134 | #define VGA_SEQ_CLOCK_MODE 0x01 |
| 135 | #define VGA_SEQ_PLANE_WRITE 0x02 |
| 136 | #define VGA_SEQ_CHARACTER_MAP 0x03 |
| 137 | #define VGA_SEQ_MEMORY_MODE 0x04 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 138 | |
| 139 | /* VGA sequencer register bit masks */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 140 | #define VGA_SR01_CHAR_CLK_8DOTS 0x01 /* bit 0: character clocks 8 dots wide are generated */ |
| 141 | #define VGA_SR01_SCREEN_OFF 0x20 /* bit 5: Screen is off */ |
| 142 | #define VGA_SR02_ALL_PLANES 0x0F /* bits 3-0: enable access to all planes */ |
| 143 | #define VGA_SR04_EXT_MEM 0x02 /* bit 1: allows complete mem access to 256K */ |
| 144 | #define VGA_SR04_SEQ_MODE 0x04 /* bit 2: directs system to use a sequential addressing mode */ |
| 145 | #define VGA_SR04_CHN_4M 0x08 /* bit 3: selects modulo 4 addressing for CPU access to display memory */ |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 146 | |
| 147 | /* VGA graphics controller register indices */ |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 148 | #define VGA_GFX_SR_VALUE 0x00 |
| 149 | #define VGA_GFX_SR_ENABLE 0x01 |
| 150 | #define VGA_GFX_COMPARE_VALUE 0x02 |
| 151 | #define VGA_GFX_DATA_ROTATE 0x03 |
| 152 | #define VGA_GFX_PLANE_READ 0x04 |
| 153 | #define VGA_GFX_MODE 0x05 |
| 154 | #define VGA_GFX_MISC 0x06 |
| 155 | #define VGA_GFX_COMPARE_MASK 0x07 |
| 156 | #define VGA_GFX_BIT_MASK 0x08 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 157 | |
| 158 | /* VGA graphics controller bit masks */ |
Paolo Bonzini | 4352626 | 2014-12-29 14:56:24 +0100 | [diff] [blame] | 159 | #define VGA_GR05_HOST_ODD_EVEN 0x10 |
Blue Swirl | 0dad6c3 | 2012-01-29 15:29:02 +0000 | [diff] [blame] | 160 | #define VGA_GR06_GRAPHICS_MODE 0x01 |
Paolo Bonzini | 4352626 | 2014-12-29 14:56:24 +0100 | [diff] [blame] | 161 | #define VGA_GR06_CHAIN_ODD_EVEN 0x02 |
Blue Swirl | b134886 | 2012-01-29 15:23:50 +0000 | [diff] [blame] | 162 | |
Markus Armbruster | 58ea30f | 2019-03-15 15:51:20 +0100 | [diff] [blame] | 163 | #endif /* HW_VGA_REGS_H */ |