cregit-Linux how code gets into the kernel

Release 4.7 drivers/gpu/drm/amd/powerplay/hwmgr/polaris10_powertune.c

/*
 * Copyright 2015 Advanced Micro Devices, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in 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:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 */

#include "hwmgr.h"
#include "smumgr.h"
#include "polaris10_hwmgr.h"
#include "polaris10_powertune.h"
#include "polaris10_smumgr.h"
#include "smu74_discrete.h"
#include "pp_debug.h"


#define VOLTAGE_SCALE  4

#define POWERTUNE_DEFAULT_SET_MAX    1


static const struct polaris10_pt_defaults polaris10_power_tune_data_set_array[POWERTUNE_DEFAULT_SET_MAX] = {
	/* sviLoadLIneEn, SviLoadLineVddC, TDC_VDDC_ThrottleReleaseLimitPerc, TDC_MAWt,
         * TdcWaterfallCtl, DTEAmbientTempBase, DisplayCac, BAPM_TEMP_GRADIENT */
	{ 1, 0xF, 0xFD, 0x19, 5, 45, 0, 0xB0000,
	{ 0x79, 0x253, 0x25D, 0xAE, 0x72, 0x80, 0x83, 0x86, 0x6F, 0xC8, 0xC9, 0xC9, 0x2F, 0x4D, 0x61},
	{ 0x17C, 0x172, 0x180, 0x1BC, 0x1B3, 0x1BD, 0x206, 0x200, 0x203, 0x25D, 0x25A, 0x255, 0x2C3, 0x2C5, 0x2B4 } },
};


void polaris10_initialize_power_tune_defaults(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *polaris10_hwmgr = (struct polaris10_hwmgr *)(hwmgr->backend); struct phm_ppt_v1_information *table_info = (struct phm_ppt_v1_information *)(hwmgr->pptable); if (table_info && table_info->cac_dtp_table->usPowerTuneDataSetID <= POWERTUNE_DEFAULT_SET_MAX && table_info->cac_dtp_table->usPowerTuneDataSetID) polaris10_hwmgr->power_tune_defaults = &polaris10_power_tune_data_set_array [table_info->cac_dtp_table->usPowerTuneDataSetID - 1]; else polaris10_hwmgr->power_tune_defaults = &polaris10_power_tune_data_set_array[0]; }

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static uint16_t scale_fan_gain_settings(uint16_t raw_setting) { uint32_t tmp; tmp = raw_setting * 4096 / 100; return (uint16_t)tmp; }

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int polaris10_populate_bapm_parameters_in_dpm_table(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); const struct polaris10_pt_defaults *defaults = data->power_tune_defaults; SMU74_Discrete_DpmTable *dpm_table = &(data->smc_state_table); struct phm_ppt_v1_information *table_info = (struct phm_ppt_v1_information *)(hwmgr->pptable); struct phm_cac_tdp_table *cac_dtp_table = table_info->cac_dtp_table; struct pp_advance_fan_control_parameters *fan_table= &hwmgr->thermal_controller.advanceFanControlParameters; int i, j, k; const uint16_t *pdef1; const uint16_t *pdef2; dpm_table->DefaultTdp = PP_HOST_TO_SMC_US((uint16_t)(cac_dtp_table->usTDP * 128)); dpm_table->TargetTdp = PP_HOST_TO_SMC_US((uint16_t)(cac_dtp_table->usTDP * 128)); PP_ASSERT_WITH_CODE(cac_dtp_table->usTargetOperatingTemp <= 255, "Target Operating Temp is out of Range!", ); dpm_table->TemperatureLimitEdge = PP_HOST_TO_SMC_US( cac_dtp_table->usTargetOperatingTemp * 256); dpm_table->TemperatureLimitHotspot = PP_HOST_TO_SMC_US( cac_dtp_table->usTemperatureLimitHotspot * 256); dpm_table->FanGainEdge = PP_HOST_TO_SMC_US( scale_fan_gain_settings(fan_table->usFanGainEdge)); dpm_table->FanGainHotspot = PP_HOST_TO_SMC_US( scale_fan_gain_settings(fan_table->usFanGainHotspot)); pdef1 = defaults->BAPMTI_R; pdef2 = defaults->BAPMTI_RC; for (i = 0; i < SMU74_DTE_ITERATIONS; i++) { for (j = 0; j < SMU74_DTE_SOURCES; j++) { for (k = 0; k < SMU74_DTE_SINKS; k++) { dpm_table->BAPMTI_R[i][j][k] = PP_HOST_TO_SMC_US(*pdef1); dpm_table->BAPMTI_RC[i][j][k] = PP_HOST_TO_SMC_US(*pdef2); pdef1++; pdef2++; } } } return 0; }

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static int polaris10_populate_svi_load_line(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); const struct polaris10_pt_defaults *defaults = data->power_tune_defaults; data->power_tune_table.SviLoadLineEn = defaults->SviLoadLineEn; data->power_tune_table.SviLoadLineVddC = defaults->SviLoadLineVddC; data->power_tune_table.SviLoadLineTrimVddC = 3; data->power_tune_table.SviLoadLineOffsetVddC = 0; return 0; }

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static int polaris10_populate_tdc_limit(struct pp_hwmgr *hwmgr) { uint16_t tdc_limit; struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); struct phm_ppt_v1_information *table_info = (struct phm_ppt_v1_information *)(hwmgr->pptable); const struct polaris10_pt_defaults *defaults = data->power_tune_defaults; tdc_limit = (uint16_t)(table_info->cac_dtp_table->usTDC * 128); data->power_tune_table.TDC_VDDC_PkgLimit = CONVERT_FROM_HOST_TO_SMC_US(tdc_limit); data->power_tune_table.TDC_VDDC_ThrottleReleaseLimitPerc = defaults->TDC_VDDC_ThrottleReleaseLimitPerc; data->power_tune_table.TDC_MAWt = defaults->TDC_MAWt; return 0; }

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static int polaris10_populate_dw8(struct pp_hwmgr *hwmgr, uint32_t fuse_table_offset) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); const struct polaris10_pt_defaults *defaults = data->power_tune_defaults; uint32_t temp; if (polaris10_read_smc_sram_dword(hwmgr->smumgr, fuse_table_offset + offsetof(SMU74_Discrete_PmFuses, TdcWaterfallCtl), (uint32_t *)&temp, data->sram_end)) PP_ASSERT_WITH_CODE(false, "Attempt to read PmFuses.DW6 (SviLoadLineEn) from SMC Failed!", return -EINVAL); else { data->power_tune_table.TdcWaterfallCtl = defaults->TdcWaterfallCtl; data->power_tune_table.LPMLTemperatureMin = (uint8_t)((temp >> 16) & 0xff); data->power_tune_table.LPMLTemperatureMax = (uint8_t)((temp >> 8) & 0xff); data->power_tune_table.Reserved = (uint8_t)(temp & 0xff); } return 0; }

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static int polaris10_populate_temperature_scaler(struct pp_hwmgr *hwmgr) { int i; struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); /* Currently not used. Set all to zero. */ for (i = 0; i < 16; i++) data->power_tune_table.LPMLTemperatureScaler[i] = 0; return 0; }

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static int polaris10_populate_fuzzy_fan(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); if ((hwmgr->thermal_controller.advanceFanControlParameters.usFanOutputSensitivity & (1 << 15)) || 0 == hwmgr->thermal_controller.advanceFanControlParameters.usFanOutputSensitivity) hwmgr->thermal_controller.advanceFanControlParameters.usFanOutputSensitivity = hwmgr->thermal_controller.advanceFanControlParameters.usDefaultFanOutputSensitivity; data->power_tune_table.FuzzyFan_PwmSetDelta = PP_HOST_TO_SMC_US( hwmgr->thermal_controller.advanceFanControlParameters.usFanOutputSensitivity); return 0; }

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static int polaris10_populate_gnb_lpml(struct pp_hwmgr *hwmgr) { int i; struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); /* Currently not used. Set all to zero. */ for (i = 0; i < 16; i++) data->power_tune_table.GnbLPML[i] = 0; return 0; }

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static int polaris10_min_max_vgnb_lpml_id_from_bapm_vddc(struct pp_hwmgr *hwmgr) { return 0; }

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static int polaris10_populate_bapm_vddc_base_leakage_sidd(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); struct phm_ppt_v1_information *table_info = (struct phm_ppt_v1_information *)(hwmgr->pptable); uint16_t hi_sidd = data->power_tune_table.BapmVddCBaseLeakageHiSidd; uint16_t lo_sidd = data->power_tune_table.BapmVddCBaseLeakageLoSidd; struct phm_cac_tdp_table *cac_table = table_info->cac_dtp_table; hi_sidd = (uint16_t)(cac_table->usHighCACLeakage / 100 * 256); lo_sidd = (uint16_t)(cac_table->usLowCACLeakage / 100 * 256); data->power_tune_table.BapmVddCBaseLeakageHiSidd = CONVERT_FROM_HOST_TO_SMC_US(hi_sidd); data->power_tune_table.BapmVddCBaseLeakageLoSidd = CONVERT_FROM_HOST_TO_SMC_US(lo_sidd); return 0; }

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int polaris10_populate_pm_fuses(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); uint32_t pm_fuse_table_offset; if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_PowerContainment)) { if (polaris10_read_smc_sram_dword(hwmgr->smumgr, SMU7_FIRMWARE_HEADER_LOCATION + offsetof(SMU74_Firmware_Header, PmFuseTable), &pm_fuse_table_offset, data->sram_end)) PP_ASSERT_WITH_CODE(false, "Attempt to get pm_fuse_table_offset Failed!", return -EINVAL); if (polaris10_populate_svi_load_line(hwmgr)) PP_ASSERT_WITH_CODE(false, "Attempt to populate SviLoadLine Failed!", return -EINVAL); if (polaris10_populate_tdc_limit(hwmgr)) PP_ASSERT_WITH_CODE(false, "Attempt to populate TDCLimit Failed!", return -EINVAL); if (polaris10_populate_dw8(hwmgr, pm_fuse_table_offset)) PP_ASSERT_WITH_CODE(false, "Attempt to populate TdcWaterfallCtl, " "LPMLTemperature Min and Max Failed!", return -EINVAL); if (0 != polaris10_populate_temperature_scaler(hwmgr)) PP_ASSERT_WITH_CODE(false, "Attempt to populate LPMLTemperatureScaler Failed!", return -EINVAL); if (polaris10_populate_fuzzy_fan(hwmgr)) PP_ASSERT_WITH_CODE(false, "Attempt to populate Fuzzy Fan Control parameters Failed!", return -EINVAL); if (polaris10_populate_gnb_lpml(hwmgr)) PP_ASSERT_WITH_CODE(false, "Attempt to populate GnbLPML Failed!", return -EINVAL); if (polaris10_min_max_vgnb_lpml_id_from_bapm_vddc(hwmgr)) PP_ASSERT_WITH_CODE(false, "Attempt to populate GnbLPML Min and Max Vid Failed!", return -EINVAL); if (polaris10_populate_bapm_vddc_base_leakage_sidd(hwmgr)) PP_ASSERT_WITH_CODE(false, "Attempt to populate BapmVddCBaseLeakage Hi and Lo " "Sidd Failed!", return -EINVAL); if (polaris10_copy_bytes_to_smc(hwmgr->smumgr, pm_fuse_table_offset, (uint8_t *)&data->power_tune_table, (sizeof(struct SMU74_Discrete_PmFuses) - 92), data->sram_end)) PP_ASSERT_WITH_CODE(false, "Attempt to download PmFuseTable Failed!", return -EINVAL); } return 0; }

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int polaris10_enable_smc_cac(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); int result = 0; if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_CAC)) { int smc_result; smc_result = smum_send_msg_to_smc(hwmgr->smumgr, (uint16_t)(PPSMC_MSG_EnableCac)); PP_ASSERT_WITH_CODE((0 == smc_result), "Failed to enable CAC in SMC.", result = -1); data->cac_enabled = (0 == smc_result) ? true : false; } return result; }

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int polaris10_set_power_limit(struct pp_hwmgr *hwmgr, uint32_t n) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); if (data->power_containment_features & POWERCONTAINMENT_FEATURE_PkgPwrLimit) return smum_send_msg_to_smc_with_parameter(hwmgr->smumgr, PPSMC_MSG_PkgPwrSetLimit, n); return 0; }

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static int polaris10_set_overdriver_target_tdp(struct pp_hwmgr *pHwMgr, uint32_t target_tdp) { return smum_send_msg_to_smc_with_parameter(pHwMgr->smumgr, PPSMC_MSG_OverDriveSetTargetTdp, target_tdp); }

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int polaris10_enable_power_containment(struct pp_hwmgr *hwmgr) { struct polaris10_hwmgr *data = (struct polaris10_hwmgr *)(hwmgr->backend); struct phm_ppt_v1_information *table_info = (struct phm_ppt_v1_information *)(hwmgr->pptable); int smc_result; int result = 0; data->power_containment_features = 0; if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_PowerContainment)) { if (data->enable_tdc_limit_feature) { smc_result = smum_send_msg_to_smc(hwmgr->smumgr, (uint16_t)(PPSMC_MSG_TDCLimitEnable)); PP_ASSERT_WITH_CODE((0 == smc_result), "Failed to enable TDCLimit in SMC.", result = -1;); if (0 == smc_result) data->power_containment_features |= POWERCONTAINMENT_FEATURE_TDCLimit; } if (data->enable_pkg_pwr_tracking_feature) { smc_result = smum_send_msg_to_smc(hwmgr->smumgr, (uint16_t)(PPSMC_MSG_PkgPwrLimitEnable)); PP_ASSERT_WITH_CODE((0 == smc_result), "Failed to enable PkgPwrTracking in SMC.", result = -1;); if (0 == smc_result) { struct phm_cac_tdp_table *cac_table = table_info->cac_dtp_table; uint32_t default_limit = (uint32_t)(cac_table->usMaximumPowerDeliveryLimit * 256); data->power_containment_features |= POWERCONTAINMENT_FEATURE_PkgPwrLimit; if (polaris10_set_power_limit(hwmgr, default_limit)) printk(KERN_ERR "Failed to set Default Power Limit in SMC!"); } } } return result; }

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int polaris10_power_control_set_level(struct pp_hwmgr *hwmgr) { struct phm_ppt_v1_information *table_info = (struct phm_ppt_v1_information *)(hwmgr->pptable); struct phm_cac_tdp_table *cac_table = table_info->cac_dtp_table; int adjust_percent, target_tdp; int result = 0; if (phm_cap_enabled(hwmgr->platform_descriptor.platformCaps, PHM_PlatformCaps_PowerContainment)) { /* adjustment percentage has already been validated */ adjust_percent = hwmgr->platform_descriptor.TDPAdjustmentPolarity ? hwmgr->platform_descriptor.TDPAdjustment : (-1 * hwmgr->platform_descriptor.TDPAdjustment); /* SMC requested that target_tdp to be 7 bit fraction in DPM table * but message to be 8 bit fraction for messages */ target_tdp = ((100 + adjust_percent) * (int)(cac_table->usTDP * 256)) / 100; result = polaris10_set_overdriver_target_tdp(hwmgr, (uint32_t)target_tdp); } return result; }

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