1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2015 Tycho Nightingale <tycho.nightingale@pluribusnetworks.com> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _VGA_H_ 32 #define _VGA_H_ 33 34 #define VGA_IOPORT_START 0x3c0 35 #define VGA_IOPORT_END 0x3df 36 37 /* General registers */ 38 #define GEN_INPUT_STS0_PORT 0x3c2 39 #define GEN_FEATURE_CTRL_PORT 0x3ca 40 #define GEN_MISC_OUTPUT_PORT 0x3cc 41 #define GEN_INPUT_STS1_MONO_PORT 0x3ba 42 #define GEN_INPUT_STS1_COLOR_PORT 0x3da 43 #define GEN_IS1_VR 0x08 /* Vertical retrace */ 44 #define GEN_IS1_DE 0x01 /* Display enable not */ 45 46 /* Attribute controller registers. */ 47 #define ATC_IDX_PORT 0x3c0 48 #define ATC_DATA_PORT 0x3c1 49 50 #define ATC_IDX_MASK 0x1f 51 #define ATC_PALETTE0 0 52 #define ATC_PALETTE15 15 53 #define ATC_MODE_CONTROL 16 54 #define ATC_MC_IPS 0x80 /* Internal palette size */ 55 #define ATC_MC_GA 0x01 /* Graphics/alphanumeric */ 56 #define ATC_OVERSCAN_COLOR 17 57 #define ATC_COLOR_PLANE_ENABLE 18 58 #define ATC_HORIZ_PIXEL_PANNING 19 59 #define ATC_COLOR_SELECT 20 60 #define ATC_CS_C67 0x0c /* Color select bits 6+7 */ 61 #define ATC_CS_C45 0x03 /* Color select bits 4+5 */ 62 63 /* Sequencer registers. */ 64 #define SEQ_IDX_PORT 0x3c4 65 #define SEQ_DATA_PORT 0x3c5 66 67 #define SEQ_RESET 0 68 #define SEQ_RESET_ASYNC 0x1 69 #define SEQ_RESET_SYNC 0x2 70 #define SEQ_CLOCKING_MODE 1 71 #define SEQ_CM_SO 0x20 /* Screen off */ 72 #define SEQ_CM_89 0x01 /* 8/9 dot clock */ 73 #define SEQ_MAP_MASK 2 74 #define SEQ_CHAR_MAP_SELECT 3 75 #define SEQ_CMS_SAH 0x20 /* Char map A bit 2 */ 76 #define SEQ_CMS_SAH_SHIFT 5 77 #define SEQ_CMS_SA 0x0c /* Char map A bits 0+1 */ 78 #define SEQ_CMS_SA_SHIFT 2 79 #define SEQ_CMS_SBH 0x10 /* Char map B bit 2 */ 80 #define SEQ_CMS_SBH_SHIFT 4 81 #define SEQ_CMS_SB 0x03 /* Char map B bits 0+1 */ 82 #define SEQ_CMS_SB_SHIFT 0 83 #define SEQ_MEMORY_MODE 4 84 #define SEQ_MM_C4 0x08 /* Chain 4 */ 85 #define SEQ_MM_OE 0x04 /* Odd/even */ 86 #define SEQ_MM_EM 0x02 /* Extended memory */ 87 88 /* Graphics controller registers. */ 89 #define GC_IDX_PORT 0x3ce 90 #define GC_DATA_PORT 0x3cf 91 92 #define GC_SET_RESET 0 93 #define GC_ENABLE_SET_RESET 1 94 #define GC_COLOR_COMPARE 2 95 #define GC_DATA_ROTATE 3 96 #define GC_READ_MAP_SELECT 4 97 #define GC_MODE 5 98 #define GC_MODE_OE 0x10 /* Odd/even */ 99 #define GC_MODE_C4 0x04 /* Chain 4 */ 100 101 #define GC_MISCELLANEOUS 6 102 #define GC_MISC_GM 0x01 /* Graphics/alphanumeric */ 103 #define GC_MISC_MM 0x0c /* memory map */ 104 #define GC_MISC_MM_SHIFT 2 105 #define GC_COLOR_DONT_CARE 7 106 #define GC_BIT_MASK 8 107 108 /* CRT controller registers. */ 109 #define CRTC_IDX_MONO_PORT 0x3b4 110 #define CRTC_DATA_MONO_PORT 0x3b5 111 #define CRTC_IDX_COLOR_PORT 0x3d4 112 #define CRTC_DATA_COLOR_PORT 0x3d5 113 114 #define CRTC_HORIZ_TOTAL 0 115 #define CRTC_HORIZ_DISP_END 1 116 #define CRTC_START_HORIZ_BLANK 2 117 #define CRTC_END_HORIZ_BLANK 3 118 #define CRTC_START_HORIZ_RETRACE 4 119 #define CRTC_END_HORIZ_RETRACE 5 120 #define CRTC_VERT_TOTAL 6 121 #define CRTC_OVERFLOW 7 122 #define CRTC_OF_VRS9 0x80 /* VRS bit 9 */ 123 #define CRTC_OF_VRS9_SHIFT 7 124 #define CRTC_OF_VDE9 0x40 /* VDE bit 9 */ 125 #define CRTC_OF_VDE9_SHIFT 6 126 #define CRTC_OF_VRS8 0x04 /* VRS bit 8 */ 127 #define CRTC_OF_VRS8_SHIFT 2 128 #define CRTC_OF_VDE8 0x02 /* VDE bit 8 */ 129 #define CRTC_OF_VDE8_SHIFT 1 130 #define CRTC_PRESET_ROW_SCAN 8 131 #define CRTC_MAX_SCAN_LINE 9 132 #define CRTC_MSL_MSL 0x1f 133 #define CRTC_CURSOR_START 10 134 #define CRTC_CS_CO 0x20 /* Cursor off */ 135 #define CRTC_CS_CS 0x1f /* Cursor start */ 136 #define CRTC_CURSOR_END 11 137 #define CRTC_CE_CE 0x1f /* Cursor end */ 138 #define CRTC_START_ADDR_HIGH 12 139 #define CRTC_START_ADDR_LOW 13 140 #define CRTC_CURSOR_LOC_HIGH 14 141 #define CRTC_CURSOR_LOC_LOW 15 142 #define CRTC_VERT_RETRACE_START 16 143 #define CRTC_VERT_RETRACE_END 17 144 #define CRTC_VRE_MASK 0xf 145 #define CRTC_VERT_DISP_END 18 146 #define CRTC_OFFSET 19 147 #define CRTC_UNDERLINE_LOC 20 148 #define CRTC_START_VERT_BLANK 21 149 #define CRTC_END_VERT_BLANK 22 150 #define CRTC_MODE_CONTROL 23 151 #define CRTC_MC_TE 0x80 /* Timing enable */ 152 #define CRTC_LINE_COMPARE 24 153 154 /* DAC registers */ 155 #define DAC_MASK 0x3c6 156 #define DAC_IDX_RD_PORT 0x3c7 157 #define DAC_IDX_WR_PORT 0x3c8 158 #define DAC_DATA_PORT 0x3c9 159 160 void *vga_init(int io_only); 161 162 #endif /* _VGA_H_ */ 163