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