105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/* ----------------------------------------------------------------------- *
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*
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* Copyright 2012 Intel Corporation; author: H. Peter Anvin
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom
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* the Software is furnished to do so, subject to the following
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* conditions:
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*
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* The above copyright notice and this permission notice shall
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* be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
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* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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* ----------------------------------------------------------------------- */
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#ifndef _HW_VGA_H
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#define _HW_VGA_H 1
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#include <sys/io.h>
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/* These are relative to the CRTC base address */
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#define VGA_CRTC_ADDR 0x4
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#define VGA_CRTC_DATA 0x5
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#define VGA_CRTC_IX_HORIZ_TOTAL 0x00
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#define VGA_CRTC_IX_END_HORIZ_DISPLAY 0x01
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#define VGA_CRTC_IX_START_HORIZ_BLANK 0x02
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#define VGA_CRTC_IX_END_HORIZ_BLANK 0x03
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#define VGA_CRTC_IX_START_HORIZ_RETR 0x04
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#define VGA_CRTC_IX_END_HORIZ_RETR 0x05
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#define VGA_CRTC_IX_VERT_TOTAL 0x06
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#define VGA_CRTC_IX_OVERFLOW 0x07
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#define VGA_CRTC_IX_PRESET_ROW_SCAN 0x08
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#define VGA_CRTC_IX_MAX_SCAN_LINE 0x09
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#define VGA_CRTC_IX_CURSOR_START 0x0a
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#define VGA_CRTC_IX_CURSOR_END 0x0b
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#define VGA_CRTC_IX_START_ADDR_HIGH 0x0c
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#define VGA_CRTC_IX_START_ADDR_LOW 0x0d
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#define VGA_CRTC_IX_CURSOR_POS_HIGH 0x0e
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#define VGA_CRTC_IX_CURSOR_POS_LOW 0x0f
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#define VGA_CRTC_IX_START_VERT_RETR 0x10
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#define VGA_CRTC_IX_END_VERT_RETR 0x11
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#define VGA_CRTC_IX_END_VERT_DISPLAY 0x12
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#define VGA_CRTC_IX_OFFSET 0x13
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#define VGA_CRTC_IX_UNDERLINE 0x14
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#define VGA_CRTC_IX_START_VERT_BLANK 0x15
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#define VGA_CRTC_IX_END_VERT_BLANK 0x16
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#define VGA_CRTC_IX_MODE_CONTROL 0x17
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#define VGA_CRTC_IX_LINE_COMPARE 0x18
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#define VGA_CRTC_INPUT_STATUS_1 0xa
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#define VGA_CRTC_FEATURE_CONTROL_WRITE 0xa
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#define VGA_ATTR_ADDR_DATA 0x3c0
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#define VGA_ATTR_DATA_READ 0x3c1
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/* 0x00-0x0f are 16->64 palette registers */
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#define VGA_ATTR_IX_MODE_CONTROL 0x10
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#define VGA_ATTR_IX_OVERSCAN 0x11
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#define VGA_ATTR_IX_COLOR_PLANE_ENABLE 0x12
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#define VGA_ATTR_IX_HORIZ_PIXEL_PAN 0x13
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#define VGA_ADDR_IX_COLOR_SELECT 0x14
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#define VGA_INPUT_STATUS_0 0x3c2
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#define VGA_MISC_OUTPUT_WRITE 0x3c2
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#define VGA_SEQ_ADDR 0x3c4
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#define VGA_SEQ_DATA 0x3c5
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#define VGA_SEQ_IX_RESET 0
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#define VGA_SEQ_IX_CLOCKMODE 1
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#define VGA_SEQ_IX_MAP_MASK 2
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#define VGA_SEQ_IX_CHAR_MAP 3
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#define VGA_SEQ_IX_SEQ_MEM_MODE 4
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#define VGA_DAC_STATE 0x3c7
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#define VGA_DAC_ADDR_READ_MODE 0x3c7
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#define VGA_DAC_ADDR_WRITE_MODE 0x3c8
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#define VGA_DAC_DATA 0x3c9
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#define VGA_FEATURE_CONTROL_READ 0x3ca
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#define VGA_MISC_OUTPUT_READ 0x3cc
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#define VGA_GC_ADDR 0x3ce
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#define VGA_GC_DATA 0x3cf
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#define VGA_GC_IX_SET_RESET 0
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#define VGA_GC_IX_ENABLE_SET_RESET 1
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#define VGA_GC_IX_COLOR_COMPARE 2
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#define VGA_GC_IX_DATA_ROTATE 3
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#define VGA_GC_IX_READ_MAP_SELECT 4
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#define VGA_GC_IX_GRAPHICS_MODE 5
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#define VGA_GC_IX_MISC_GRAPHICS 6
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#define VGA_GC_IX_COLOR_DONT_CARE 7
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#define VGA_GC_IX_BIT_MASK 8
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static inline uint16_t vga_crtc_base(void)
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{
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return 0x3b0 + ((inb(VGA_MISC_OUTPUT_READ) & 1) << 5);
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}
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#endif /* _HW_VGA_H */
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