root/drivers/gpu/drm/amd/powerplay/hwmgr/vega20_powertune.c

DEFINITIONS

1. vega20_set_power_limit
2. vega20_validate_power_level_request
3. vega20_set_overdrive_target_percentage
4. vega20_power_control_set_level

   1 /*
   2  * Copyright 2018 Advanced Micro Devices, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  */
  23 
  24 #include "hwmgr.h"
  25 #include "vega20_hwmgr.h"
  26 #include "vega20_powertune.h"
  27 #include "vega20_smumgr.h"
  28 #include "vega20_ppsmc.h"
  29 #include "vega20_inc.h"
  30 #include "pp_debug.h"
  31 
  32 int vega20_set_power_limit(struct pp_hwmgr *hwmgr, uint32_t n)
  33 {
  34         struct vega20_hwmgr *data =
  35                         (struct vega20_hwmgr *)(hwmgr->backend);
  36 
  37         if (data->smu_features[GNLD_PPT].enabled)
  38                 return smum_send_msg_to_smc_with_parameter(hwmgr,
  39                                 PPSMC_MSG_SetPptLimit, n);
  40 
  41         return 0;
  42 }
  43 
  44 int vega20_validate_power_level_request(struct pp_hwmgr *hwmgr,
  45                 uint32_t tdp_percentage_adjustment, uint32_t tdp_absolute_value_adjustment)
  46 {
  47         return (tdp_percentage_adjustment > hwmgr->platform_descriptor.TDPLimit) ? -1 : 0;
  48 }
  49 
  50 static int vega20_set_overdrive_target_percentage(struct pp_hwmgr *hwmgr,
  51                 uint32_t adjust_percent)
  52 {
  53         return smum_send_msg_to_smc_with_parameter(hwmgr,
  54                         PPSMC_MSG_OverDriveSetPercentage, adjust_percent);
  55 }
  56 
  57 int vega20_power_control_set_level(struct pp_hwmgr *hwmgr)
  58 {
  59         int adjust_percent, result = 0;
  60 
  61         if (PP_CAP(PHM_PlatformCaps_PowerContainment)) {
  62                 adjust_percent =
  63                                 hwmgr->platform_descriptor.TDPAdjustmentPolarity ?
  64                                 hwmgr->platform_descriptor.TDPAdjustment :
  65                                 (-1 * hwmgr->platform_descriptor.TDPAdjustment);
  66                 result = vega20_set_overdrive_target_percentage(hwmgr,
  67                                 (uint32_t)adjust_percent);
  68         }
  69         return result;
  70 }