////////////////////////////////////////////////////////////////////////////////
//
// The University of Illinois/NCSA
// Open Source License (NCSA)
//
// Copyright (c) 2023, Advanced Micro Devices, Inc. All rights reserved.
//
// Developed by:
//
//                 AMD Research and AMD HSA Software Development
//
//                 Advanced Micro Devices, Inc.
//
//                 www.amd.com
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal with 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:
//
//  - Redistributions of source code must retain the above copyright notice,
//    this list of conditions and the following disclaimers.
//  - Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimers in
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//  - Neither the names of Advanced Micro Devices, Inc,
//    nor the names of its contributors may be used to endorse or promote
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////////////////////////////////////////////////////////////////////////////////

#include "core/inc/driver.h"

#include <fcntl.h>
#include <unistd.h>

#include "inc/hsa.h"

namespace rocr {
namespace core {

Driver::Driver(DriverType kernel_driver_type, std::string devnode_name)
    : kernel_driver_type_(std::move(kernel_driver_type)),
      devnode_name_(std::move(devnode_name)) {}

hsa_status_t Driver::Open()
{
  fd_  = open(devnode_name_.c_str(), O_RDWR | O_CLOEXEC);
  if (fd_ < 0) {
    return HSA_STATUS_ERROR_OUT_OF_RESOURCES;
  }
  return HSA_STATUS_SUCCESS;
}

hsa_status_t Driver::Close()
{
  int ret(0);
  if (fd_ > 0) {
    ret = close(fd_);
    fd_ = -1;
  }
  if (ret) {
    return HSA_STATUS_ERROR;
  }
  return HSA_STATUS_SUCCESS;
}

} // namespace core
} // namespace rocr