162306a36Sopenharmony_ci// SPDX-License-Identifier: MIT 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * Copyright © 2020 Intel Corporation 462306a36Sopenharmony_ci */ 562306a36Sopenharmony_ci 662306a36Sopenharmony_ci#include <asm/msr.h> 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include "i915_drv.h" 962306a36Sopenharmony_ci#include "librapl.h" 1062306a36Sopenharmony_ci 1162306a36Sopenharmony_cibool librapl_supported(const struct drm_i915_private *i915) 1262306a36Sopenharmony_ci{ 1362306a36Sopenharmony_ci /* Discrete cards require hwmon integration */ 1462306a36Sopenharmony_ci if (IS_DGFX(i915)) 1562306a36Sopenharmony_ci return false; 1662306a36Sopenharmony_ci 1762306a36Sopenharmony_ci return librapl_energy_uJ(); 1862306a36Sopenharmony_ci} 1962306a36Sopenharmony_ci 2062306a36Sopenharmony_ciu64 librapl_energy_uJ(void) 2162306a36Sopenharmony_ci{ 2262306a36Sopenharmony_ci unsigned long long power; 2362306a36Sopenharmony_ci u32 units; 2462306a36Sopenharmony_ci 2562306a36Sopenharmony_ci if (rdmsrl_safe(MSR_RAPL_POWER_UNIT, &power)) 2662306a36Sopenharmony_ci return 0; 2762306a36Sopenharmony_ci 2862306a36Sopenharmony_ci units = (power & 0x1f00) >> 8; 2962306a36Sopenharmony_ci 3062306a36Sopenharmony_ci if (rdmsrl_safe(MSR_PP1_ENERGY_STATUS, &power)) 3162306a36Sopenharmony_ci return 0; 3262306a36Sopenharmony_ci 3362306a36Sopenharmony_ci return (1000000 * power) >> units; /* convert to uJ */ 3462306a36Sopenharmony_ci} 35