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