vt_vga_reg.h revision 303975
1/*- 2 * Copyright (c) 2005 Marcel Moolenaar 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: releng/11.0/sys/dev/vt/hw/vga/vt_vga_reg.h 286723 2015-08-13 14:43:11Z marcel $ 27 */ 28 29#ifndef _DEV_VT_HW_VGA_VGA_REG_H_ 30#define _DEV_VT_HW_VGA_VGA_REG_H_ 31 32/* 33 * The VGA adapter uses two I/O port blocks. One of these blocks, the CRT 34 * controller registers, can be located either at 0x3B0 or at 0x3D0 in I/O 35 * port space. This allows compatibility with the monochrome adapter, which 36 * has the CRT controller registers at 0x3B0. 37 * 38 * It is assumed that compatibility with the monochrome adapter is not of 39 * interest anymore. As such, the CRT controller can be located at 0x3D0 in 40 * I/O port space unconditionally. This means that the 2 I/O blocks are 41 * always adjacent and can therefore be treated as a single logical I/O port 42 * range. In practical terms: there only has to be a single tag and handle 43 * to access all registers. 44 * 45 * The following definitions are taken from or inspired by: 46 * Programmer's Guide to the EGA, VGA, and Super VGA Cards -- 3rd ed., 47 * Richard F. Ferraro, Addison-Wesley, ISBN 0-201-62490-7 48 */ 49 50#define VGA_MEM_BASE 0xA0000 51#define VGA_MEM_SIZE 0x10000 52#define VGA_TXT_BASE 0xB8000 53#define VGA_TXT_SIZE 0x08000 54#define VGA_REG_BASE 0x3c0 55#define VGA_REG_SIZE 0x10+0x0c 56 57/* Attribute controller registers. */ 58#define VGA_AC_WRITE 0x00 59#define VGA_AC_READ 0x01 60#define VGA_AC_PALETTE(x) (x) /* 0 <= x <= 15 */ 61#define VGA_AC_PAL_SR 0x20 /* Secondary red */ 62#define VGA_AC_PAL_SG 0x10 /* Secondary green */ 63#define VGA_AC_PAL_SB 0x08 /* Secondary blue */ 64#define VGA_AC_PAL_R 0x04 /* Red */ 65#define VGA_AC_PAL_G 0x02 /* Green */ 66#define VGA_AC_PAL_B 0x01 /* Blue */ 67#define VGA_AC_MODE_CONTROL (32+16) 68#define VGA_AC_MC_IPS 0x80 /* Internal palette size */ 69#define VGA_AC_MC_PCS 0x40 /* Pixel clock select */ 70#define VGA_AC_MC_PPC 0x20 /* Pixel panning compat. */ 71#define VGA_AC_MC_BI 0x08 /* Blink/intensity */ 72#define VGA_AC_MC_ELG 0x04 /* Enable line graphics cc. */ 73#define VGA_AC_MC_DT 0x02 /* Display type */ 74#define VGA_AC_MC_GA 0x01 /* Graphics/alphanumeric */ 75#define VGA_AC_OVERSCAN_COLOR (32+17) 76#define VGA_AC_COLOR_PLANE_ENABLE (32+18) 77#define VGA_AC_HORIZ_PIXEL_PANNING (32+19) 78#define VGA_AC_COLOR_SELECT (32+20) 79#define VGA_AC_CS_C67 0x0C /* Color reg. addr. bits 6+7 */ 80#define VGA_AC_CS_C45 0x03 /* Color reg. addr. bits 4+5 */ 81 82/* General registers. */ 83#define VGA_GEN_MISC_OUTPUT_W 0x02 /* Write only. */ 84#define VGA_GEN_MISC_OUTPUT_R 0x0c /* Read only. */ 85#define VGA_GEN_MO_VSP 0x80 /* Vertical sync. polarity */ 86#define VGA_GEN_MO_HSP 0x40 /* Horiz. sync. polarity */ 87#define VGA_GEN_MO_PB 0x20 /* Page bit for odd/even */ 88#define VGA_GEN_MO_CS 0x0C /* Clock select */ 89#define VGA_GEN_MO_ER 0x02 /* Enable RAM */ 90#define VGA_GEN_MO_IOA 0x01 /* Input/output address */ 91#define VGA_GEN_INPUT_STAT_0 0x02 /* Read only. */ 92#define VGA_GEN_FEATURE_CTRL_W 0x1a /* Write only. */ 93#define VGA_GEN_FEATURE_CTRL_R 0x0a /* Read only. */ 94#define VGA_GEN_INPUT_STAT_1 0x1a /* Read only. */ 95#define VGA_GEN_IS1_VR 0x08 /* Vertical retrace */ 96#define VGA_GEN_IS1_DE 0x01 /* Display enable not */ 97 98/* Sequencer registers. */ 99#define VGA_SEQ_ADDRESS 0x04 100#define VGA_SEQ_RESET 0 101#define VGA_SEQ_RST_SR 0x02 /* Synchronous reset */ 102#define VGA_SEQ_RST_NAR 0x01 /* No async. reset */ 103#define VGA_SEQ_CLOCKING_MODE 1 104#define VGA_SEQ_CM_SO 0x20 /* Screen off */ 105#define VGA_SEQ_CM_S4 0x10 /* Shift four */ 106#define VGA_SEQ_CM_DC 0x08 /* Dot clock */ 107#define VGA_SEQ_CM_SL 0x04 /* Shift load */ 108#define VGA_SEQ_CM_89 0x01 /* 8/9 Dot clocks */ 109#define VGA_SEQ_MAP_MASK 2 110#define VGA_SEQ_MM_EM3 0x08 /* Enable memory plane 3 */ 111#define VGA_SEQ_MM_EM2 0x04 /* Enable memory plane 2 */ 112#define VGA_SEQ_MM_EM1 0x02 /* Enable memory plane 1 */ 113#define VGA_SEQ_MM_EM0 0x01 /* Enable memory plane 0 */ 114#define VGA_SEQ_CHAR_MAP_SELECT 3 115#define VGA_SEQ_CMS_SAH 0x20 /* Char. A (bit 2) */ 116#define VGA_SEQ_CMS_SBH 0x10 /* Char. B (bit 2) */ 117#define VGA_SEQ_CMS_SA 0x0C /* Char. A (bit 0+1) */ 118#define VGA_SEQ_CMS_SB 0x03 /* Char. B (bit 0+1) */ 119#define VGA_SEQ_MEMORY_MODE 4 120#define VGA_SEQ_MM_C4 0x08 /* Chain four */ 121#define VGA_SEQ_MM_OE 0x04 /* Odd/even */ 122#define VGA_SEQ_MM_EM 0x02 /* Extended memory */ 123#define VGA_SEQ_DATA 0x05 124 125/* Color registers. */ 126#define VGA_PEL_MASK 0x06 127#define VGA_PEL_ADDR_RD_MODE 0x07 /* Write only. */ 128#define VGA_DAC_STATE 0x07 /* Read only. */ 129#define VGA_PEL_ADDR_WR_MODE 0x08 130#define VGA_PEL_DATA 0x09 131 132/* Graphics controller registers. */ 133#define VGA_GC_ADDRESS 0x0e 134#define VGA_GC_SET_RESET 0 135#define VGA_GC_ENABLE_SET_RESET 1 136#define VGA_GC_COLOR_COMPARE 2 137#define VGA_GC_DATA_ROTATE 3 138#define VGA_GC_DR_FS_XOR 0x18 /* Function select - XOR */ 139#define VGA_GC_DR_FS_OR 0x10 /* Function select - OR */ 140#define VGA_GC_DR_FS_AND 0x08 /* Function select - AND */ 141#define VGA_GC_DR_RC 0x07 /* Rotate count */ 142#define VGA_GC_READ_MAP_SELECT 4 143#define VGA_GC_MODE 5 144#define VGA_GC_MODE_SR 0x60 /* Shift register */ 145#define VGA_GC_MODE_OE 0x10 /* Odd/even */ 146#define VGA_GC_MODE_RM 0x08 /* Read mode */ 147#define VGA_GC_MODE_WM 0x03 /* Write mode */ 148#define VGA_GC_MISCELLANEOUS 6 149#define VGA_GC_MISC_MM 0x0C /* memory map */ 150#define VGA_GC_MISC_COE 0x02 /* Chain odd/even */ 151#define VGA_GC_MISC_GA 0x01 /* Graphics/text mode */ 152#define VGA_GC_COLOR_DONT_CARE 7 153#define VGA_GC_BIT_MASK 8 154#define VGA_GC_DATA 0x0f 155 156/* CRT controller registers. */ 157#define VGA_CRTC_ADDRESS 0x14 158#define VGA_CRTC_HORIZ_TOTAL 0 159#define VGA_CRTC_HORIZ_DISP_END 1 160#define VGA_CRTC_START_HORIZ_BLANK 2 161#define VGA_CRTC_END_HORIZ_BLANK 3 162#define VGA_CRTC_EHB_CR 0x80 /* Compatible read */ 163#define VGA_CRTC_EHB_DES 0x60 /* Display enable skew */ 164#define VGA_CRTC_EHB_EHB 0x1F /* End horizontal blank */ 165#define VGA_CRTC_START_HORIZ_RETRACE 4 166#define VGA_CRTC_END_HORIZ_RETRACE 5 167#define VGA_CRTC_EHR_EHB 0x80 /* End horizontal blanking */ 168#define VGA_CRTC_EHR_HRD 0x60 /* Horizontal retrace delay */ 169#define VGA_CRTC_EHR_EHR 0x1F /* End horizontal retrace */ 170#define VGA_CRTC_VERT_TOTAL 6 171#define VGA_CRTC_OVERFLOW 7 172#define VGA_CRTC_OF_VRS9 0x80 /* Vertical retrace start */ 173#define VGA_CRTC_OF_VDE9 0x40 /* Vertical disp. enable end */ 174#define VGA_CRTC_OF_VT9 0x20 /* Vertical total (bit 9) */ 175#define VGA_CRTC_OF_LC8 0x10 /* Line compare */ 176#define VGA_CRTC_OF_VBS8 0x08 /* Start vertical blanking */ 177#define VGA_CRTC_OF_VRS8 0x04 /* Vertical retrace start */ 178#define VGA_CRTC_OF_VDE8 0x02 /* Vertical disp. enable end */ 179#define VGA_CRTC_OF_VT8 0x01 /* Vertical total (bit 8) */ 180#define VGA_CRTC_PRESET_ROW_SCAN 8 181#define VGA_CRTC_PRS_BP 0x60 /* Byte panning */ 182#define VGA_CRTC_PRS_PRS 0x1F /* Preset row scan */ 183#define VGA_CRTC_MAX_SCAN_LINE 9 184#define VGA_CRTC_MSL_2T4 0x80 /* 200-to-400 line conversion */ 185#define VGA_CRTC_MSL_LC9 0x40 /* Line compare (bit 9) */ 186#define VGA_CRTC_MSL_VBS9 0x20 /* Start vertical blanking */ 187#define VGA_CRTC_MSL_MSL 0x1F /* Maximum scan line */ 188#define VGA_CRTC_CURSOR_START 10 189#define VGA_CRTC_CS_COO 0x20 /* Cursor on/off */ 190#define VGA_CRTC_CS_CS 0x1F /* Cursor start */ 191#define VGA_CRTC_CURSOR_END 11 192#define VGA_CRTC_CE_CSK 0x60 /* Cursor skew */ 193#define VGA_CRTC_CE_CE 0x1F /* Cursor end */ 194#define VGA_CRTC_START_ADDR_HIGH 12 195#define VGA_CRTC_START_ADDR_LOW 13 196#define VGA_CRTC_CURSOR_LOC_HIGH 14 197#define VGA_CRTC_CURSOR_LOC_LOW 15 198#define VGA_CRTC_VERT_RETRACE_START 16 199#define VGA_CRTC_VERT_RETRACE_END 17 200#define VGA_CRTC_VRE_PR 0x80 /* Protect register 0-7 */ 201#define VGA_CRTC_VRE_BW 0x40 /* Bandwidth */ 202#define VGA_CRTC_VRE_VRE 0x1F /* Vertical retrace end */ 203#define VGA_CRTC_VERT_DISPLAY_END 18 204#define VGA_CRTC_OFFSET 19 205#define VGA_CRTC_UNDERLINE_LOC 20 206#define VGA_CRTC_UL_DW 0x40 /* Double word mode */ 207#define VGA_CRTC_UL_CB4 0x20 /* Count by four */ 208#define VGA_CRTC_UL_UL 0x1F /* Underline location */ 209#define VGA_CRTC_START_VERT_BLANK 21 210#define VGA_CRTC_END_VERT_BLANK 22 211#define VGA_CRTC_MODE_CONTROL 23 212#define VGA_CRTC_MC_HR 0x80 /* hardware reset */ 213#define VGA_CRTC_MC_WB 0x40 /* Word/byte mode */ 214#define VGA_CRTC_MC_AW 0x20 /* Address wrap */ 215#define VGA_CRTC_MC_CBT 0x08 /* Count by two */ 216#define VGA_CRTC_MC_HRS 0x04 /* Horizontal retrace select */ 217#define VGA_CRTC_MC_SRS 0x02 /* Select row scan counter */ 218#define VGA_CRTC_MC_CMS 0x01 /* Compatibility mode support */ 219#define VGA_CRTC_LINE_COMPARE 24 220#define VGA_CRTC_DATA 0x15 221 222#endif /* !_DEV_VT_HW_VGA_VGA_REG_H_ */ 223