IoApic.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 KERNEL_MACHINE_X86_COMMON_IO_APIC_H
#define KERNEL_MACHINE_X86_COMMON_IO_APIC_H
#include <config.h>
 
#if MULTIPROCESSOR
 
#include "pedigree/kernel/Spinlock.h"
#include "pedigree/kernel/processor/MemoryMappedIo.h"
 
class IoApic {
 public:
  IoApic();
  virtual ~IoApic();
 
  bool initialise(physical_uintptr_t address, uint32_t gsiBase);
  bool contains(uint32_t gsi) const;
  bool route(uint32_t gsi, uint8_t vector, uint8_t destination, bool activeLow);
  bool mask(uint32_t gsi, bool masked);
 
 private:
  IoApic(const IoApic&) = delete;
  IoApic& operator=(const IoApic&) = delete;
 
  MemoryMappedIo m_IoSpace;
  Spinlock m_Lock;
  uint32_t m_GsiBase;
  uint32_t m_Count;
};
 
#endif
 
#endif