xref: /freebsd-10.0-release/sys/contrib/octeon-sdk/cvmx-power-throttle.h

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/**
 * @file
 *
 * Interface to power-throttle control, measurement, and debugging
 * facilities.
 *
 * <hr>$Revision: 70030 $<hr>
 *
 */

#ifndef __CVMX_POWER_THROTTLE_H__
#define __CVMX_POWER_THROTTLE_H__
#ifdef	__cplusplus
extern "C" {
#endif

enum cvmx_power_throttle_field_index {
    CVMX_PTH_INDEX_MAXPOW,
    CVMX_PTH_INDEX_POWER,
    CVMX_PTH_INDEX_THROTT,
    CVMX_PTH_INDEX_RESERVED,
    CVMX_PTH_INDEX_DISTAG,
    CVMX_PTH_INDEX_PERIOD,
    CVMX_PTH_INDEX_POWLIM,
    CVMX_PTH_INDEX_MAXTHR,
    CVMX_PTH_INDEX_MINTHR,
    CVMX_PTH_INDEX_HRMPOWADJ,
    CVMX_PTH_INDEX_OVRRD,
    CVMX_PTH_INDEX_MAX
};
typedef enum cvmx_power_throttle_field_index cvmx_power_throttle_field_index_t;

/**
 * Throttle power to percentage% of configured maximum (MAXPOW).
 *
 * @param percentage	0 to 100
 * @return 0 for success and -1 for error.
 */
extern int cvmx_power_throttle_self(uint8_t percentage);

/**
 * Throttle power to percentage% of configured maximum (MAXPOW)
 * for the cores identified in coremask.
 *
 * @param percentage 	0 to 100
 * @param coremask	bit mask where each bit identifies a core.
 * @return 0 for success and -1 for error.
 */
extern int cvmx_power_throttle(uint8_t percentage, uint64_t coremask);

/**
 * The same functionality as cvmx_power_throttle() but it takes a
 * bitmap-based coremask as a parameter.
 */
extern int cvmx_power_throttle_bmp(uint8_t percentage,
    struct cvmx_coremask *pcm);

/**
 * Get the i'th field of the power throttle register
 *
 * @param r is the value of the power throttle register
 * @param i is the index of the field
 *
 * @return (uint64_t)-1 on failure.
 */
extern uint64_t cvmx_power_throttle_get_field(uint64_t r,
    cvmx_power_throttle_field_index_t i);

/**
 * Retrieve the content of the power throttle register of a core
 *
 * @param ppid is the core id
 *
 * @return (uint64_t)-1 on failure.
 */
extern uint64_t cvmx_power_throttle_get_register(int ppid);

#ifdef	__cplusplus
}
#endif
#endif /* __CVMX_POWER_THROTTLE_H__ */