Updated vga code to newer coding conventions.
This commit is contained in:
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b2814db927
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d75a7145ef
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@ -26,27 +26,12 @@
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#ifndef LIBMAXSI_SORTIX_VGA_H
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#define LIBMAXSI_SORTIX_VGA_H
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#include <sortix/vga.h>
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namespace System
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{
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namespace VGA
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{
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// TODO: Move these to a better place
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#define COLOR8_BLACK 0
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#define COLOR8_BLUE 1
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#define COLOR8_GREEN 2
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#define COLOR8_CYAN 3
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#define COLOR8_RED 4
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#define COLOR8_MAGENTA 5
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#define COLOR8_BROWN 6
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#define COLOR8_LIGHT_GREY 7
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#define COLOR8_DARK_GREY 8
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#define COLOR8_LIGHT_BLUE 9
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#define COLOR8_LIGHT_GREEN 10
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#define COLOR8_LIGHT_CYAN 11
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#define COLOR8_LIGHT_RED 12
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#define COLOR8_LIGHT_MAGENTA 13
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#define COLOR8_LIGHT_BROWN 14
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#define COLOR8_WHITE 15
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}
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}
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@ -0,0 +1,52 @@
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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011, 2012.
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This file is part of Sortix.
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Sortix is free software: you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation, either version 3 of the License, or (at your option) any later
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version.
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Sortix is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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details.
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You should have received a copy of the GNU General Public License along with
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Sortix. If not, see <http://www.gnu.org/licenses/>.
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sortix/vga.h
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Standard symbolic constants and types for Sortix.
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*******************************************************************************/
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#ifndef INC_SORTIX_VGA_H
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#define INC_SORTIX_VGA_H
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#include <features.h>
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__BEGIN_DECLS
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#define COLOR8_BLACK 0
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#define COLOR8_BLUE 1
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#define COLOR8_GREEN 2
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#define COLOR8_CYAN 3
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#define COLOR8_RED 4
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#define COLOR8_MAGENTA 5
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#define COLOR8_BROWN 6
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#define COLOR8_LIGHT_GREY 7
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#define COLOR8_DARK_GREY 8
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#define COLOR8_LIGHT_BLUE 9
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#define COLOR8_LIGHT_GREEN 10
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#define COLOR8_LIGHT_CYAN 11
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#define COLOR8_LIGHT_RED 12
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#define COLOR8_LIGHT_MAGENTA 13
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#define COLOR8_LIGHT_BROWN 14
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#define COLOR8_WHITE 15
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__END_DECLS
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#endif
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139
sortix/vga.cpp
139
sortix/vga.cpp
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@ -35,38 +35,37 @@
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using namespace Maxsi;
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namespace Sortix
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{
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namespace VGA
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{
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byte* const VGA = (byte* const) 0xB8000;
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const unsigned WIDTH = 80;
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const unsigned HEIGHT = 25;
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const size_t VGA_SIZE = sizeof(uint16_t) * WIDTH * HEIGHT;
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size_t vgafontsize;
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uint8_t* vgafont;
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namespace Sortix {
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namespace VGA {
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static void WriteIndex(uint16_t port, uint8_t index, uint8_t value)
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{
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uint8_t* const VGA = (byte* const) 0xB8000;
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const unsigned WIDTH = 80;
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const unsigned HEIGHT = 25;
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const size_t VGA_SIZE = sizeof(uint16_t) * WIDTH * HEIGHT;
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size_t vgafontsize;
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uint8_t* vgafont;
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static void WriteIndex(uint16_t port, uint8_t index, uint8_t value)
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{
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CPU::OutPortB(port, index);
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CPU::OutPortB(port+1, value);
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}
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}
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static uint8_t ReadIndex(uint16_t port, uint8_t index)
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{
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static uint8_t ReadIndex(uint16_t port, uint8_t index)
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{
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CPU::OutPortB(port, index);
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return CPU::InPortB(port+1);
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}
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}
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static uint8_t ReplaceIndex(uint16_t port, uint8_t index, uint8_t value)
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{
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static uint8_t ReplaceIndex(uint16_t port, uint8_t index, uint8_t value)
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{
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uint8_t ret = ReadIndex(port, index);
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WriteIndex(port, index, value);
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return ret;
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}
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}
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static void FetchVGAFont(uint8_t* font)
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{
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static void FetchVGAFont(uint8_t* font)
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{
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// TODO: I just got these magic constants off the net.
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// Select plane 2 for reading.
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uint8_t old_03ce_04 = ReplaceIndex(0x03CE, 0x04, 0x02);
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WriteIndex(0x03CE, 0x05, old_03ce_05);
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WriteIndex(0x03CE, 0x06, old_03ce_06);
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WriteIndex(0x03CE, 0x04, old_03ce_04);
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}
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}
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#if TEST_VGAFONT
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static void PrintFontChar(const uint8_t* font, unsigned char c)
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{
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static void PrintFontChar(const uint8_t* font, unsigned char c)
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{
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const uint8_t* glyph = font + VGA_FONT_CHARSIZE * (size_t) c;
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for ( size_t y = 0; y < VGA_FONT_HEIGHT; y++ )
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{
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@ -112,16 +111,16 @@ namespace Sortix
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}
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Log::Print("\n");
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}
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}
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}
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#endif
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const uint8_t* GetFont()
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{
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const uint8_t* GetFont()
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{
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return vgafont;
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}
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}
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void Init()
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{
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void Init()
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{
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vgafontsize = VGA_FONT_NUMCHARS * VGA_FONT_CHARSIZE;
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if ( !(vgafont = new uint8_t[vgafontsize]) )
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Panic("Unable to allocate vga font buffer");
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@ -130,11 +129,11 @@ namespace Sortix
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PrintFontChar(vgafont, 'A');
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PrintFontChar(vgafont, 'S');
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#endif
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}
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}
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// Changes the position of the hardware cursor.
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void SetCursor(nat x, nat y)
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{
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// Changes the position of the hardware cursor.
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void SetCursor(unsigned x, unsigned y)
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{
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nat value = x + y * WIDTH;
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// This sends a command to indicies 14 and 15 in the
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CPU::OutPortB(0x3D5, (value >> 8) & 0xFF);
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CPU::OutPortB(0x3D4, 15);
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CPU::OutPortB(0x3D5, (value >> 0) & 0xFF);
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}
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}
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}
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DevVGA::DevVGA()
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{
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} // namespace VGA
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DevVGA::DevVGA()
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{
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offset = 0;
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}
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}
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DevVGA::~DevVGA()
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{
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DevVGA::~DevVGA()
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{
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#ifdef PLATFORM_SERIAL
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// TODO: HACK: This is a hack that is unrelated to this file.
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// This is a hack to make the cursor a proper color after the vga buffer
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@ -163,18 +163,18 @@ namespace Sortix
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// them, but this will do for now.
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Log::PrintF("\e[m");
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#endif
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}
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}
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ssize_t DevVGA::Read(byte* dest, size_t count)
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{
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ssize_t DevVGA::Read(byte* dest, size_t count)
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{
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if ( VGA::VGA_SIZE - offset < count ) { count = VGA::VGA_SIZE - offset; }
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Maxsi::Memory::Copy(dest, VGA::VGA + offset, count);
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offset += count;
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return count;
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}
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}
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ssize_t DevVGA::Write(const byte* src, size_t count)
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{
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ssize_t DevVGA::Write(const byte* src, size_t count)
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{
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if ( offset == VGA::VGA_SIZE && count ) { Error::Set(ENOSPC); return -1; }
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if ( VGA::VGA_SIZE - offset < count ) { count = VGA::VGA_SIZE - offset; }
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Maxsi::Memory::Copy(VGA::VGA + offset, src, count);
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SerialTerminal::OnVGAModified();
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#endif
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return count;
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}
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}
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bool DevVGA::IsReadable()
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{
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bool DevVGA::IsReadable()
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{
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return true;
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}
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}
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bool DevVGA::IsWritable()
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{
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bool DevVGA::IsWritable()
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{
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return true;
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}
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}
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size_t DevVGA::BlockSize()
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{
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size_t DevVGA::BlockSize()
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{
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return 1;
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}
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}
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uintmax_t DevVGA::Size()
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{
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uintmax_t DevVGA::Size()
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{
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return VGA::VGA_SIZE;
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}
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}
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uintmax_t DevVGA::Position()
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{
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uintmax_t DevVGA::Position()
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{
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return offset;
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}
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}
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bool DevVGA::Seek(uintmax_t position)
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{
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bool DevVGA::Seek(uintmax_t position)
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{
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if ( VGA::VGA_SIZE < position ) { Error::Set(EINVAL); return false; }
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offset = position;
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return true;
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}
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}
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bool DevVGA::Resize(uintmax_t size)
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{
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bool DevVGA::Resize(uintmax_t size)
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{
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if ( size == VGA::VGA_SIZE ) { return false; }
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Error::Set(ENOSPC);
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return false;
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}
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}
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} // namespace Sortix
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64
sortix/vga.h
64
sortix/vga.h
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#include "device.h"
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#include "stream.h"
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namespace Sortix
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namespace Sortix {
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const size_t VGA_FONT_WIDTH = 8UL;
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const size_t VGA_FONT_HEIGHT = 16UL;
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const size_t VGA_FONT_NUMCHARS = 256UL;
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const size_t VGA_FONT_CHARSIZE = VGA_FONT_WIDTH * VGA_FONT_HEIGHT / 8UL;
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namespace VGA {
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void Init();
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void SetCursor(unsigned x, unsigned y);
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const uint8_t* GetFont();
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} // namespace VGA
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// TODO: This class shouldn't be exposed publicly; it is used in a hack in the
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// /dev filesystem. However, vga.cpp should register /dev/vga instead.
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class DevVGA : public DevBuffer
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{
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const size_t VGA_FONT_WIDTH = 8UL;
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const size_t VGA_FONT_HEIGHT = 16UL;
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const size_t VGA_FONT_NUMCHARS = 256UL;
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const size_t VGA_FONT_CHARSIZE = VGA_FONT_WIDTH * VGA_FONT_HEIGHT / 8UL;
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namespace VGA
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{
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// TODO: Move these to a better place
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#define COLOR8_BLACK 0
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#define COLOR8_BLUE 1
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#define COLOR8_GREEN 2
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#define COLOR8_CYAN 3
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#define COLOR8_RED 4
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#define COLOR8_MAGENTA 5
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#define COLOR8_BROWN 6
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#define COLOR8_LIGHT_GREY 7
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#define COLOR8_DARK_GREY 8
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#define COLOR8_LIGHT_BLUE 9
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#define COLOR8_LIGHT_GREEN 10
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#define COLOR8_LIGHT_CYAN 11
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#define COLOR8_LIGHT_RED 12
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#define COLOR8_LIGHT_MAGENTA 13
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#define COLOR8_LIGHT_BROWN 14
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#define COLOR8_WHITE 15
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void Init();
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void SetCursor(nat x, nat y);
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const uint8_t* GetFont();
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}
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class DevVGA : public DevBuffer
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{
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public:
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public:
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typedef DevBuffer BaseClass;
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public:
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public:
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DevVGA();
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virtual ~DevVGA();
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private:
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private:
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size_t offset;
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public:
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public:
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virtual ssize_t Read(byte* dest, size_t count);
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virtual ssize_t Write(const byte* src, size_t count);
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virtual bool IsReadable();
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virtual bool Seek(uintmax_t position);
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virtual bool Resize(uintmax_t size);
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};
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}
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};
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} // namespace Sortix
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#endif
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@ -24,6 +24,7 @@
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#include <sortix/kernel/platform.h>
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#include <sortix/kernel/log.h>
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#include <sortix/vga.h>
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#include <libmaxsi/memory.h>
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#include "vga.h"
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#include "vgaterminal.h"
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