kernel/machine/mach_pc/Vga.h

/*
 * Copyright (c) 2008-2014, Pedigree Developers
 *
 * Please see the CONTRIB file in the root of the source tree for a full
 * list of contributors.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
#ifndef MACHINE_X86_VGA_H
#define MACHINE_X86_VGA_H
#include "pedigree/kernel/Spinlock.h"
#include "pedigree/kernel/machine/Vga.h"
#include "pedigree/kernel/processor/MemoryMappedIo.h"
#include "pedigree/kernel/processor/types.h"
 
#include "FramebufferConsole.h"
 
class X86Vga : public Vga {
 public:
  X86Vga();
  virtual ~X86Vga();
 
  virtual bool setLargestTextMode();
 
  virtual size_t getNumCols() {
    return FramebufferConsole::Columns;
  }
 
  virtual size_t getNumRows() {
    return FramebufferConsole::Rows;
  }
 
  virtual void pokeBuffer(uint8_t* pBuffer, size_t nBufLen);
 
  virtual void peekBuffer(uint8_t* pBuffer, size_t nBufLen);
 
  virtual void moveCursor(size_t nX, size_t nY);
  virtual void flush();
  bool setFramebuffer(Framebuffer* framebuffer) override;
  void enterPanicMode() override {
    m_PanicMode = true;
  }
 
  bool initialise();
 
  operator uint16_t*() const {
    return const_cast<uint16_t*>(m_Console.cells());
  }
 
 private:
  X86Vga(const X86Vga&);
  X86Vga& operator=(const X86Vga&);
 
  MemoryMappedIo m_Framebuffer;
  Spinlock m_ConsoleLock{false, true};
  bool m_PanicMode = false;
  FramebufferConsole m_Console;
  Framebuffer* m_pConsoleFramebuffer = nullptr;
};
 
#endif