/*
 * =============================================================================
 *   ROC Runtime Conformance Release License
 * =============================================================================
 * The University of Illinois/NCSA
 * Open Source License (NCSA)
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 * Copyright (c) 2022, Advanced Micro Devices, Inc.
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 *
 *                 AMD Research and AMD ROC Software Development
 *
 *                 Advanced Micro Devices, Inc.
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 *                 www.amd.com
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#include <stdint.h>
#include <stddef.h>

#include <iostream>
#include <bitset>
#include <string>
#include <algorithm>

#include <gtest/gtest.h>
#include "amd_smi/amdsmi.h"
#include "power_cap_read_write.h"
#include "../test_common.h"


TestPowerCapReadWrite::TestPowerCapReadWrite() : TestBase() {
  set_title("AMDSMI Power Cap Read/Write Test");
  set_description("The Power Cap tests verify that the power profile "
                             "settings can be read and written properly.");
}

TestPowerCapReadWrite::~TestPowerCapReadWrite(void) {
}

void TestPowerCapReadWrite::SetUp(void) {
  TestBase::SetUp();

  return;
}

void TestPowerCapReadWrite::DisplayTestInfo(void) {
  TestBase::DisplayTestInfo();
}

void TestPowerCapReadWrite::DisplayResults(void) const {
  TestBase::DisplayResults();
  return;
}

void TestPowerCapReadWrite::Close() {
  // This will close handles opened within amdsmitst utility calls and call
  // amdsmi_shut_down(), so it should be done after other hsa cleanup
  TestBase::Close();
}

void TestPowerCapReadWrite::Run(void) {
  amdsmi_status_t ret;
  uint64_t orig, min, max, new_cap;
  clock_t start, end;
  double cpu_time_used;

  TestBase::Run();
  if (setup_failed_) {
    std::cout << "** SetUp Failed for this test. Skipping.**" << std::endl;
    return;
  }

  for (uint32_t dv_ind = 0; dv_ind < num_monitor_devs(); ++dv_ind) {
    PrintDeviceHeader(processor_handles_[dv_ind]);

    amdsmi_power_cap_info_t info;
    ret = amdsmi_get_power_cap_info(processor_handles_[dv_ind], 0, &info);
    CHK_ERR_ASRT(ret)
    // Verify api support checking functionality is working
    ret = amdsmi_get_power_cap_info(processor_handles_[dv_ind], 0, nullptr);
    ASSERT_EQ(ret, AMDSMI_STATUS_INVAL);
    min = info.min_power_cap;
    max = info.max_power_cap;
    orig = info.default_power_cap;

    // Check if power cap is within the range
    // skip the test otherwise
    if (orig < min || orig > max) {
      std::cout << "Power cap is not within the range. Skipping test for " << dv_ind << std::endl;
      continue;
    }

    new_cap = (max + min)/2;

    IF_VERB(STANDARD) {
      std::cout << "Original Power Cap: " << orig << " uW" << std::endl;
      std::cout << "Power Cap Range: " << max << " uW to " << min <<
                                                             " uW" << std::endl;
      std::cout << "Setting new cap to " << new_cap << "..." << std::endl;
    }
    start = clock();
    ret =  amdsmi_set_power_cap(processor_handles_[dv_ind], 0, new_cap);
    end = clock();
    cpu_time_used = ((double) (end - start)) * 1000000UL / CLOCKS_PER_SEC;

    if (ret == AMDSMI_STATUS_NOT_SUPPORTED) {
      IF_VERB(STANDARD) {
        std::cout << "\t** Not supported on this machine" << std::endl;
      }
      continue;
    }
    CHK_ERR_ASRT(ret)

    ret = amdsmi_get_power_cap_info(processor_handles_[dv_ind], 0, &info);
    CHK_ERR_ASRT(ret)
    new_cap = info.default_power_cap;

    // TODO(cfreehil) add some kind of assertion to verify new_cap is correct
    //       (or within a range)
    IF_VERB(STANDARD) {
      std::cout << "Time spent: " << cpu_time_used << " uS" << std::endl;
      std::cout << "New Power Cap: " << new_cap << " uW" << std::endl;
      std::cout << "Resetting cap to " << orig << "..." << std::endl;
    }

    ret =  amdsmi_set_power_cap(processor_handles_[dv_ind], 0, orig);
    CHK_ERR_ASRT(ret)

    ret = amdsmi_get_power_cap_info(processor_handles_[dv_ind], 0, &info);
    CHK_ERR_ASRT(ret)
    new_cap = info.default_power_cap;

    IF_VERB(STANDARD) {
      std::cout << "Current Power Cap: " << new_cap << " uW" << std::endl;
    }
  }
}