tlbmc/hal/sysfs/peci.h

#ifndef THIRD_PARTY_MILOTIC_EXTERNAL_CC_TLBMC_HAL_SYSFS_PECI_H_
#define THIRD_PARTY_MILOTIC_EXTERNAL_CC_TLBMC_HAL_SYSFS_PECI_H_

#include <cstdint>
#include <filesystem>  // NOLINT: filesystem is available on BMC
#include <string>

#include "absl/status/status.h"
#include "boost/filesystem.hpp"  // NOLINT: boost::filesystem is commonly used in BMC
#include "hal_common_config.pb.h"
#include "tlbmc/hal/sysfs/hwmon.h"

namespace milotic_tlbmc {

struct PeciSysfsConfig {
  // From: https://patchwork.ozlabs.org/project/linux-aspeed/patch/20220208153639.255278-8-iwona.winiarska@intel.com/
  std::string peci_sysfs_path = "/sys/bus/peci";
  std::string peci_dev_path = "/dev/peci-";
};

// The class is thread-safe.
class PeciSysfs : public HwmonSysfs {
 public:
  explicit PeciSysfs(const PeciSysfsConfig& config) : config_(config) {}

  virtual ~PeciSysfs() = default;

  boost::filesystem::path GetBusPath(uint64_t bus) const override;

  boost::filesystem::path GetPeciDevicePath(uint64_t bus) const;

  virtual boost::filesystem::path GetPeciRescanPath() const;

  absl::Status DeleteDevice(const HalCommonConfig& config) const override;

  std::string GetDeviceDirectoryName(
      const HalCommonConfig& config) const override;

  bool IsDevicePresent(const HalCommonConfig& config) const override;

 private:
  const PeciSysfsConfig config_;
};

}  // namespace milotic_tlbmc

#endif  // THIRD_PARTY_MILOTIC_EXTERNAL_CC_TLBMC_HAL_SYSFS_PECI_H_