1 /* ----------------------------------------------------------------------- * 2 * 3 * Copyright 2012 Intel Corporation; author: H. Peter Anvin 4 * 5 * Permission is hereby granted, free of charge, to any person 6 * obtaining a copy of this software and associated documentation 7 * files (the "Software"), to deal in the Software without 8 * restriction, including without limitation the rights to use, 9 * copy, modify, merge, publish, distribute, sublicense, and/or 10 * sell copies of the Software, and to permit persons to whom 11 * the Software is furnished to do so, subject to the following 12 * conditions: 13 * 14 * The above copyright notice and this permission notice shall 15 * be included in all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES 19 * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT 21 * HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 22 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 23 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 24 * OTHER DEALINGS IN THE SOFTWARE. 25 * 26 * ----------------------------------------------------------------------- */ 27 28 #ifndef _HW_VGA_H 29 #define _HW_VGA_H 1 30 31 #include <sys/io.h> 32 33 /* These are relative to the CRTC base address */ 34 #define VGA_CRTC_ADDR 0x4 35 #define VGA_CRTC_DATA 0x5 36 #define VGA_CRTC_IX_HORIZ_TOTAL 0x00 37 #define VGA_CRTC_IX_END_HORIZ_DISPLAY 0x01 38 #define VGA_CRTC_IX_START_HORIZ_BLANK 0x02 39 #define VGA_CRTC_IX_END_HORIZ_BLANK 0x03 40 #define VGA_CRTC_IX_START_HORIZ_RETR 0x04 41 #define VGA_CRTC_IX_END_HORIZ_RETR 0x05 42 #define VGA_CRTC_IX_VERT_TOTAL 0x06 43 #define VGA_CRTC_IX_OVERFLOW 0x07 44 #define VGA_CRTC_IX_PRESET_ROW_SCAN 0x08 45 #define VGA_CRTC_IX_MAX_SCAN_LINE 0x09 46 #define VGA_CRTC_IX_CURSOR_START 0x0a 47 #define VGA_CRTC_IX_CURSOR_END 0x0b 48 #define VGA_CRTC_IX_START_ADDR_HIGH 0x0c 49 #define VGA_CRTC_IX_START_ADDR_LOW 0x0d 50 #define VGA_CRTC_IX_CURSOR_POS_HIGH 0x0e 51 #define VGA_CRTC_IX_CURSOR_POS_LOW 0x0f 52 #define VGA_CRTC_IX_START_VERT_RETR 0x10 53 #define VGA_CRTC_IX_END_VERT_RETR 0x11 54 #define VGA_CRTC_IX_END_VERT_DISPLAY 0x12 55 #define VGA_CRTC_IX_OFFSET 0x13 56 #define VGA_CRTC_IX_UNDERLINE 0x14 57 #define VGA_CRTC_IX_START_VERT_BLANK 0x15 58 #define VGA_CRTC_IX_END_VERT_BLANK 0x16 59 #define VGA_CRTC_IX_MODE_CONTROL 0x17 60 #define VGA_CRTC_IX_LINE_COMPARE 0x18 61 #define VGA_CRTC_INPUT_STATUS_1 0xa 62 #define VGA_CRTC_FEATURE_CONTROL_WRITE 0xa 63 64 #define VGA_ATTR_ADDR_DATA 0x3c0 65 #define VGA_ATTR_DATA_READ 0x3c1 66 /* 0x00-0x0f are 16->64 palette registers */ 67 #define VGA_ATTR_IX_MODE_CONTROL 0x10 68 #define VGA_ATTR_IX_OVERSCAN 0x11 69 #define VGA_ATTR_IX_COLOR_PLANE_ENABLE 0x12 70 #define VGA_ATTR_IX_HORIZ_PIXEL_PAN 0x13 71 #define VGA_ADDR_IX_COLOR_SELECT 0x14 72 #define VGA_INPUT_STATUS_0 0x3c2 73 #define VGA_MISC_OUTPUT_WRITE 0x3c2 74 #define VGA_SEQ_ADDR 0x3c4 75 #define VGA_SEQ_DATA 0x3c5 76 #define VGA_SEQ_IX_RESET 0 77 #define VGA_SEQ_IX_CLOCKMODE 1 78 #define VGA_SEQ_IX_MAP_MASK 2 79 #define VGA_SEQ_IX_CHAR_MAP 3 80 #define VGA_SEQ_IX_SEQ_MEM_MODE 4 81 #define VGA_DAC_STATE 0x3c7 82 #define VGA_DAC_ADDR_READ_MODE 0x3c7 83 #define VGA_DAC_ADDR_WRITE_MODE 0x3c8 84 #define VGA_DAC_DATA 0x3c9 85 #define VGA_FEATURE_CONTROL_READ 0x3ca 86 #define VGA_MISC_OUTPUT_READ 0x3cc 87 #define VGA_GC_ADDR 0x3ce 88 #define VGA_GC_DATA 0x3cf 89 #define VGA_GC_IX_SET_RESET 0 90 #define VGA_GC_IX_ENABLE_SET_RESET 1 91 #define VGA_GC_IX_COLOR_COMPARE 2 92 #define VGA_GC_IX_DATA_ROTATE 3 93 #define VGA_GC_IX_READ_MAP_SELECT 4 94 #define VGA_GC_IX_GRAPHICS_MODE 5 95 #define VGA_GC_IX_MISC_GRAPHICS 6 96 #define VGA_GC_IX_COLOR_DONT_CARE 7 97 #define VGA_GC_IX_BIT_MASK 8 98 99 static inline uint16_t vga_crtc_base(void) 100 { 101 return 0x3b0 + ((inb(VGA_MISC_OUTPUT_READ) & 1) << 5); 102 } 103 104 #endif /* _HW_VGA_H */ 105
