| /**************************************************************************** |
| * |
| * The MIT License (MIT) |
| * |
| * Copyright (c) 2014 - 2020 Vivante Corporation |
| * |
| * 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 |
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| * 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. |
| * |
| ***************************************************************************** |
| * |
| * The GPL License (GPL) |
| * |
| * Copyright (C) 2014 - 2020 Vivante Corporation |
| * |
| * This program is free software; you can redistribute it and/or |
| * modify it under the terms of the GNU General Public License |
| * as published by the Free Software Foundation; either version 2 |
| * of the License, or (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| * |
| ***************************************************************************** |
| * |
| * Note: This software is released under dual MIT and GPL licenses. A |
| * recipient may use this file under the terms of either the MIT license or |
| * GPL License. If you wish to use only one license not the other, you can |
| * indicate your decision by deleting one of the above license notices in your |
| * version of this file. |
| * |
| *****************************************************************************/ |
| |
| |
| #include "gc_hal_kernel_precomp.h" |
| |
| #define _GC_OBJ_ZONE gcvZONE_POWER |
| |
| /******************************************************************************\ |
| ************************ Dynamic Voltage Frequency Setting ********************* |
| \******************************************************************************/ |
| #if gcdDVFS |
| static gctUINT32 |
| _GetLoadHistory( |
| IN gckDVFS Dvfs, |
| IN gctUINT32 Select, |
| IN gctUINT32 Index |
| ) |
| { |
| return Dvfs->loads[Index]; |
| } |
| |
| static void |
| _IncreaseScale( |
| IN gckDVFS Dvfs, |
| IN gctUINT32 Load, |
| OUT gctUINT8 *Scale |
| ) |
| { |
| if (Dvfs->currentScale < 32) |
| { |
| *Scale = Dvfs->currentScale + 8; |
| } |
| else |
| { |
| *Scale = Dvfs->currentScale + 8; |
| *Scale = gcmMIN(64, *Scale); |
| } |
| } |
| |
| static void |
| _RecordFrequencyHistory( |
| gckDVFS Dvfs, |
| gctUINT32 Frequency |
| ) |
| { |
| gctUINT32 i = 0; |
| |
| struct _FrequencyHistory *history = Dvfs->frequencyHistory; |
| |
| for (i = 0; i < 16; i++) |
| { |
| if (history->frequency == Frequency) |
| { |
| break; |
| } |
| |
| if (history->frequency == 0) |
| { |
| history->frequency = Frequency; |
| break; |
| } |
| |
| history++; |
| } |
| |
| if (i < 16) |
| { |
| history->count++; |
| } |
| } |
| |
| static gctUINT32 |
| _GetFrequencyHistory( |
| gckDVFS Dvfs, |
| gctUINT32 Frequency |
| ) |
| { |
| gctUINT32 i = 0; |
| |
| struct _FrequencyHistory * history = Dvfs->frequencyHistory; |
| |
| for (i = 0; i < 16; i++) |
| { |
| if (history->frequency == Frequency) |
| { |
| break; |
| } |
| |
| history++; |
| } |
| |
| if (i < 16) |
| { |
| return history->count; |
| } |
| |
| return 0; |
| } |
| |
| static void |
| _Policy( |
| IN gckDVFS Dvfs, |
| IN gctUINT32 Load, |
| OUT gctUINT8 *Scale |
| ) |
| { |
| gctUINT8 load[4], nextLoad; |
| gctUINT8 scale; |
| |
| /* Last 4 history. */ |
| load[0] = (Load & 0xFF); |
| load[1] = (Load & 0xFF00) >> 8; |
| load[2] = (Load & 0xFF0000) >> 16; |
| load[3] = (Load & 0xFF000000) >> 24; |
| |
| /* Determine target scale. */ |
| if (load[0] > 54) |
| { |
| _IncreaseScale(Dvfs, Load, &scale); |
| } |
| else |
| { |
| nextLoad = (load[0] + load[1] + load[2] + load[3])/4; |
| |
| scale = Dvfs->currentScale * (nextLoad) / 54; |
| |
| scale = gcmMAX(1, scale); |
| scale = gcmMIN(64, scale); |
| } |
| |
| Dvfs->totalConfig++; |
| |
| Dvfs->loads[(load[0]-1)/8]++; |
| |
| *Scale = scale; |
| |
| |
| if (Dvfs->totalConfig % 100 == 0) |
| { |
| gcmkPRINT("======================================================="); |
| gcmkPRINT("GPU Load: %-8d %-8d %-8d %-8d %-8d %-8d %-8d %-8d", |
| 8, 16, 24, 32, 40, 48, 56, 64); |
| gcmkPRINT(" %-8d %-8d %-8d %-8d %-8d %-8d %-8d %-8d", |
| _GetLoadHistory(Dvfs,2, 0), |
| _GetLoadHistory(Dvfs,2, 1), |
| _GetLoadHistory(Dvfs,2, 2), |
| _GetLoadHistory(Dvfs,2, 3), |
| _GetLoadHistory(Dvfs,2, 4), |
| _GetLoadHistory(Dvfs,2, 5), |
| _GetLoadHistory(Dvfs,2, 6), |
| _GetLoadHistory(Dvfs,2, 7) |
| ); |
| |
| gcmkPRINT("Frequency(MHz) %-8d %-8d %-8d %-8d %-8d", |
| 58, 120, 240, 360, 480); |
| gcmkPRINT(" %-8d %-8d %-8d %-8d %-8d", |
| _GetFrequencyHistory(Dvfs, 58), |
| _GetFrequencyHistory(Dvfs,120), |
| _GetFrequencyHistory(Dvfs,240), |
| _GetFrequencyHistory(Dvfs,360), |
| _GetFrequencyHistory(Dvfs,480) |
| ); |
| } |
| } |
| |
| static void |
| _TimerFunction( |
| gctPOINTER Data |
| ) |
| { |
| gceSTATUS status; |
| gckDVFS dvfs = (gckDVFS) Data; |
| gckHARDWARE hardware = dvfs->hardware; |
| gctUINT32 value; |
| gctUINT32 frequency; |
| gctUINT8 scale; |
| gctUINT32 t1, t2, consumed; |
| |
| gckOS_GetTicks(&t1); |
| |
| gcmkONERROR(gckHARDWARE_QueryLoad(hardware, &value)); |
| |
| /* determine target sacle. */ |
| _Policy(dvfs, value, &scale); |
| |
| /* Set frequency and voltage. */ |
| gcmkONERROR(gckOS_SetGPUFrequency(hardware->os, hardware->core, scale)); |
| |
| /* Query real frequency. */ |
| gcmkONERROR( |
| gckOS_QueryGPUFrequency(hardware->os, |
| hardware->core, |
| &frequency, |
| &dvfs->currentScale)); |
| |
| _RecordFrequencyHistory(dvfs, frequency); |
| |
| gcmkTRACE_ZONE(gcvLEVEL_INFO, gcvZONE_POWER, |
| "Current frequency = %d", |
| frequency); |
| |
| /* Set period. */ |
| gcmkONERROR(gckHARDWARE_SetDVFSPeroid(hardware, frequency)); |
| |
| OnError: |
| /* Determine next querying time. */ |
| gckOS_GetTicks(&t2); |
| |
| consumed = gcmMIN(((long)t2 - (long)t1), 5); |
| |
| if (dvfs->stop == gcvFALSE) |
| { |
| gcmkVERIFY_OK(gckOS_StartTimer(hardware->os, |
| dvfs->timer, |
| dvfs->pollingTime - consumed)); |
| } |
| |
| return; |
| } |
| |
| gceSTATUS |
| gckDVFS_Construct( |
| IN gckHARDWARE Hardware, |
| OUT gckDVFS * Dvfs |
| ) |
| { |
| gceSTATUS status; |
| gctPOINTER pointer; |
| gckDVFS dvfs = gcvNULL; |
| gckOS os = Hardware->os; |
| |
| gcmkHEADER_ARG("Hardware=0x%X", Hardware); |
| |
| gcmkVERIFY_OBJECT(Hardware, gcvOBJ_HARDWARE); |
| gcmkVERIFY_ARGUMENT(Dvfs != gcvNULL); |
| |
| /* Allocate a gckDVFS manager. */ |
| gcmkONERROR(gckOS_Allocate(os, gcmSIZEOF(struct _gckDVFS), &pointer)); |
| |
| gckOS_ZeroMemory(pointer, gcmSIZEOF(struct _gckDVFS)); |
| |
| dvfs = pointer; |
| |
| /* Initialization. */ |
| dvfs->hardware = Hardware; |
| dvfs->pollingTime = gcdDVFS_POLLING_TIME; |
| dvfs->os = Hardware->os; |
| dvfs->currentScale = 64; |
| |
| /* Create a polling timer. */ |
| gcmkONERROR(gckOS_CreateTimer(os, _TimerFunction, pointer, &dvfs->timer)); |
| |
| /* Initialize frequency and voltage adjustment helper. */ |
| gcmkONERROR(gckOS_PrepareGPUFrequency(os, Hardware->core)); |
| |
| /* Return result. */ |
| *Dvfs = dvfs; |
| |
| gcmkFOOTER_NO(); |
| return gcvSTATUS_OK; |
| |
| OnError: |
| /* Roll back. */ |
| if (dvfs) |
| { |
| if (dvfs->timer) |
| { |
| gcmkVERIFY_OK(gckOS_DestroyTimer(os, dvfs->timer)); |
| } |
| |
| gcmkOS_SAFE_FREE(os, dvfs); |
| } |
| |
| gcmkFOOTER(); |
| return status; |
| } |
| |
| gceSTATUS |
| gckDVFS_Destroy( |
| IN gckDVFS Dvfs |
| ) |
| { |
| gcmkHEADER_ARG("Dvfs=0x%X", Dvfs); |
| gcmkVERIFY_ARGUMENT(Dvfs != gcvNULL); |
| |
| /* Deinitialize helper fuunction. */ |
| gcmkVERIFY_OK(gckOS_FinishGPUFrequency(Dvfs->os, Dvfs->hardware->core)); |
| |
| /* DestroyTimer. */ |
| gcmkVERIFY_OK(gckOS_DestroyTimer(Dvfs->os, Dvfs->timer)); |
| |
| gcmkOS_SAFE_FREE(Dvfs->os, Dvfs); |
| |
| gcmkFOOTER_NO(); |
| return gcvSTATUS_OK; |
| } |
| |
| gceSTATUS |
| gckDVFS_Start( |
| IN gckDVFS Dvfs |
| ) |
| { |
| gcmkHEADER_ARG("Dvfs=0x%X", Dvfs); |
| gcmkVERIFY_ARGUMENT(Dvfs != gcvNULL); |
| |
| gckHARDWARE_InitDVFS(Dvfs->hardware); |
| |
| Dvfs->stop = gcvFALSE; |
| |
| gckOS_StartTimer(Dvfs->os, Dvfs->timer, Dvfs->pollingTime); |
| |
| gcmkFOOTER_NO(); |
| return gcvSTATUS_OK; |
| } |
| |
| gceSTATUS |
| gckDVFS_Stop( |
| IN gckDVFS Dvfs |
| ) |
| { |
| gcmkHEADER_ARG("Dvfs=0x%X", Dvfs); |
| gcmkVERIFY_ARGUMENT(Dvfs != gcvNULL); |
| |
| Dvfs->stop = gcvTRUE; |
| |
| gcmkFOOTER_NO(); |
| return gcvSTATUS_OK; |
| } |
| #endif |
