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Message-ID: <20240929210333.304747-1-linux@treblig.org>
Date: Sun, 29 Sep 2024 22:03:33 +0100
From: linux@...blig.org
To: alexander.deucher@....com,
christian.koenig@....com,
Xinhui.Pan@....com
Cc: airlied@...il.com,
simona@...ll.ch,
amd-gfx@...ts.freedesktop.org,
dri-devel@...ts.freedesktop.org,
linux-kernel@...r.kernel.org,
"Dr. David Alan Gilbert" <linux@...blig.org>
Subject: [PATCH] drm/amd/powerplay: Delete unused function and maths library
From: "Dr. David Alan Gilbert" <linux@...blig.org>
We start with the function 'atomctrl_calculate_voltage_evv_on_sclk'
which has been unused since 2016's commit
e805ed83ba1c ("drm/amd/powerplay: delete useless files.")
Remove it.
It was the last user of the struct ATOM_ASIC_PROFILING_INFO_V3_4
remove it.
It was also the last user of the entire fixed point maths library in
ppevvmath.h.
Remove it.
Signed-off-by: Dr. David Alan Gilbert <linux@...blig.org>
---
drivers/gpu/drm/amd/include/atombios.h | 72 ---
.../drm/amd/pm/powerplay/hwmgr/ppatomctrl.c | 428 -------------
.../drm/amd/pm/powerplay/hwmgr/ppatomctrl.h | 2 -
.../drm/amd/pm/powerplay/hwmgr/ppevvmath.h | 561 ------------------
4 files changed, 1063 deletions(-)
delete mode 100644 drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h
diff --git a/drivers/gpu/drm/amd/include/atombios.h b/drivers/gpu/drm/amd/include/atombios.h
index b78360a71bc9..e810366a3c83 100644
--- a/drivers/gpu/drm/amd/include/atombios.h
+++ b/drivers/gpu/drm/amd/include/atombios.h
@@ -5432,78 +5432,6 @@ typedef struct _ATOM_ASIC_PROFILING_INFO_V3_3
ULONG ulSDCMargine;
}ATOM_ASIC_PROFILING_INFO_V3_3;
-// for Fiji speed EVV algorithm
-typedef struct _ATOM_ASIC_PROFILING_INFO_V3_4
-{
- ATOM_COMMON_TABLE_HEADER asHeader;
- ULONG ulEvvLkgFactor;
- ULONG ulBoardCoreTemp;
- ULONG ulMaxVddc;
- ULONG ulMinVddc;
- ULONG ulLoadLineSlop;
- ULONG ulLeakageTemp;
- ULONG ulLeakageVoltage;
- EFUSE_LINEAR_FUNC_PARAM sCACm;
- EFUSE_LINEAR_FUNC_PARAM sCACb;
- EFUSE_LOGISTIC_FUNC_PARAM sKt_b;
- EFUSE_LOGISTIC_FUNC_PARAM sKv_m;
- EFUSE_LOGISTIC_FUNC_PARAM sKv_b;
- USHORT usLkgEuseIndex;
- UCHAR ucLkgEfuseBitLSB;
- UCHAR ucLkgEfuseLength;
- ULONG ulLkgEncodeLn_MaxDivMin;
- ULONG ulLkgEncodeMax;
- ULONG ulLkgEncodeMin;
- ULONG ulEfuseLogisticAlpha;
- USHORT usPowerDpm0;
- USHORT usPowerDpm1;
- USHORT usPowerDpm2;
- USHORT usPowerDpm3;
- USHORT usPowerDpm4;
- USHORT usPowerDpm5;
- USHORT usPowerDpm6;
- USHORT usPowerDpm7;
- ULONG ulTdpDerateDPM0;
- ULONG ulTdpDerateDPM1;
- ULONG ulTdpDerateDPM2;
- ULONG ulTdpDerateDPM3;
- ULONG ulTdpDerateDPM4;
- ULONG ulTdpDerateDPM5;
- ULONG ulTdpDerateDPM6;
- ULONG ulTdpDerateDPM7;
- EFUSE_LINEAR_FUNC_PARAM sRoFuse;
- ULONG ulEvvDefaultVddc;
- ULONG ulEvvNoCalcVddc;
- USHORT usParamNegFlag;
- USHORT usSpeed_Model;
- ULONG ulSM_A0;
- ULONG ulSM_A1;
- ULONG ulSM_A2;
- ULONG ulSM_A3;
- ULONG ulSM_A4;
- ULONG ulSM_A5;
- ULONG ulSM_A6;
- ULONG ulSM_A7;
- UCHAR ucSM_A0_sign;
- UCHAR ucSM_A1_sign;
- UCHAR ucSM_A2_sign;
- UCHAR ucSM_A3_sign;
- UCHAR ucSM_A4_sign;
- UCHAR ucSM_A5_sign;
- UCHAR ucSM_A6_sign;
- UCHAR ucSM_A7_sign;
- ULONG ulMargin_RO_a;
- ULONG ulMargin_RO_b;
- ULONG ulMargin_RO_c;
- ULONG ulMargin_fixed;
- ULONG ulMargin_Fmax_mean;
- ULONG ulMargin_plat_mean;
- ULONG ulMargin_Fmax_sigma;
- ULONG ulMargin_plat_sigma;
- ULONG ulMargin_DC_sigma;
- ULONG ulReserved[8]; // Reserved for future ASIC
-}ATOM_ASIC_PROFILING_INFO_V3_4;
-
// for Polaris10/Polaris11 speed EVV algorithm
typedef struct _ATOM_ASIC_PROFILING_INFO_V3_5
{
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c
index b56298d9da98..fe24219c3bf4 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.c
@@ -28,7 +28,6 @@
#include "ppatomctrl.h"
#include "atombios.h"
#include "cgs_common.h"
-#include "ppevvmath.h"
#define MEM_ID_MASK 0xff000000
#define MEM_ID_SHIFT 24
@@ -677,433 +676,6 @@ bool atomctrl_get_pp_assign_pin(
return bRet;
}
-int atomctrl_calculate_voltage_evv_on_sclk(
- struct pp_hwmgr *hwmgr,
- uint8_t voltage_type,
- uint32_t sclk,
- uint16_t virtual_voltage_Id,
- uint16_t *voltage,
- uint16_t dpm_level,
- bool debug)
-{
- ATOM_ASIC_PROFILING_INFO_V3_4 *getASICProfilingInfo;
- struct amdgpu_device *adev = hwmgr->adev;
- EFUSE_LINEAR_FUNC_PARAM sRO_fuse;
- EFUSE_LINEAR_FUNC_PARAM sCACm_fuse;
- EFUSE_LINEAR_FUNC_PARAM sCACb_fuse;
- EFUSE_LOGISTIC_FUNC_PARAM sKt_Beta_fuse;
- EFUSE_LOGISTIC_FUNC_PARAM sKv_m_fuse;
- EFUSE_LOGISTIC_FUNC_PARAM sKv_b_fuse;
- EFUSE_INPUT_PARAMETER sInput_FuseValues;
- READ_EFUSE_VALUE_PARAMETER sOutput_FuseValues;
-
- uint32_t ul_RO_fused, ul_CACb_fused, ul_CACm_fused, ul_Kt_Beta_fused, ul_Kv_m_fused, ul_Kv_b_fused;
- fInt fSM_A0, fSM_A1, fSM_A2, fSM_A3, fSM_A4, fSM_A5, fSM_A6, fSM_A7;
- fInt fMargin_RO_a, fMargin_RO_b, fMargin_RO_c, fMargin_fixed, fMargin_FMAX_mean, fMargin_Plat_mean, fMargin_FMAX_sigma, fMargin_Plat_sigma, fMargin_DC_sigma;
- fInt fLkg_FT, repeat;
- fInt fMicro_FMAX, fMicro_CR, fSigma_FMAX, fSigma_CR, fSigma_DC, fDC_SCLK, fSquared_Sigma_DC, fSquared_Sigma_CR, fSquared_Sigma_FMAX;
- fInt fRLL_LoadLine, fDerateTDP, fVDDC_base, fA_Term, fC_Term, fB_Term, fRO_DC_margin;
- fInt fRO_fused, fCACm_fused, fCACb_fused, fKv_m_fused, fKv_b_fused, fKt_Beta_fused, fFT_Lkg_V0NORM;
- fInt fSclk_margin, fSclk, fEVV_V;
- fInt fV_min, fV_max, fT_prod, fLKG_Factor, fT_FT, fV_FT, fV_x, fTDP_Power, fTDP_Power_right, fTDP_Power_left, fTDP_Current, fV_NL;
- uint32_t ul_FT_Lkg_V0NORM;
- fInt fLn_MaxDivMin, fMin, fAverage, fRange;
- fInt fRoots[2];
- fInt fStepSize = GetScaledFraction(625, 100000);
-
- int result;
-
- getASICProfilingInfo = (ATOM_ASIC_PROFILING_INFO_V3_4 *)
- smu_atom_get_data_table(hwmgr->adev,
- GetIndexIntoMasterTable(DATA, ASIC_ProfilingInfo),
- NULL, NULL, NULL);
-
- if (!getASICProfilingInfo)
- return -1;
-
- if (getASICProfilingInfo->asHeader.ucTableFormatRevision < 3 ||
- (getASICProfilingInfo->asHeader.ucTableFormatRevision == 3 &&
- getASICProfilingInfo->asHeader.ucTableContentRevision < 4))
- return -1;
-
- /*-----------------------------------------------------------
- *GETTING MULTI-STEP PARAMETERS RELATED TO CURRENT DPM LEVEL
- *-----------------------------------------------------------
- */
- fRLL_LoadLine = Divide(getASICProfilingInfo->ulLoadLineSlop, 1000);
-
- switch (dpm_level) {
- case 1:
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM1), 1000);
- break;
- case 2:
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM2), 1000);
- break;
- case 3:
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM3), 1000);
- break;
- case 4:
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM4), 1000);
- break;
- case 5:
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM5), 1000);
- break;
- case 6:
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM6), 1000);
- break;
- case 7:
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM7), 1000);
- break;
- default:
- pr_err("DPM Level not supported\n");
- fDerateTDP = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulTdpDerateDPM0), 1000);
- }
-
- /*-------------------------
- * DECODING FUSE VALUES
- * ------------------------
- */
- /*Decode RO_Fused*/
- sRO_fuse = getASICProfilingInfo->sRoFuse;
-
- sInput_FuseValues.usEfuseIndex = sRO_fuse.usEfuseIndex;
- sInput_FuseValues.ucBitShift = sRO_fuse.ucEfuseBitLSB;
- sInput_FuseValues.ucBitLength = sRO_fuse.ucEfuseLength;
-
- sOutput_FuseValues.sEfuse = sInput_FuseValues;
-
- result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
- GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
- (uint32_t *)&sOutput_FuseValues, sizeof(sOutput_FuseValues));
-
- if (result)
- return result;
-
- /* Finally, the actual fuse value */
- ul_RO_fused = le32_to_cpu(sOutput_FuseValues.ulEfuseValue);
- fMin = GetScaledFraction(le32_to_cpu(sRO_fuse.ulEfuseMin), 1);
- fRange = GetScaledFraction(le32_to_cpu(sRO_fuse.ulEfuseEncodeRange), 1);
- fRO_fused = fDecodeLinearFuse(ul_RO_fused, fMin, fRange, sRO_fuse.ucEfuseLength);
-
- sCACm_fuse = getASICProfilingInfo->sCACm;
-
- sInput_FuseValues.usEfuseIndex = sCACm_fuse.usEfuseIndex;
- sInput_FuseValues.ucBitShift = sCACm_fuse.ucEfuseBitLSB;
- sInput_FuseValues.ucBitLength = sCACm_fuse.ucEfuseLength;
-
- sOutput_FuseValues.sEfuse = sInput_FuseValues;
-
- result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
- GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
- (uint32_t *)&sOutput_FuseValues, sizeof(sOutput_FuseValues));
-
- if (result)
- return result;
-
- ul_CACm_fused = le32_to_cpu(sOutput_FuseValues.ulEfuseValue);
- fMin = GetScaledFraction(le32_to_cpu(sCACm_fuse.ulEfuseMin), 1000);
- fRange = GetScaledFraction(le32_to_cpu(sCACm_fuse.ulEfuseEncodeRange), 1000);
-
- fCACm_fused = fDecodeLinearFuse(ul_CACm_fused, fMin, fRange, sCACm_fuse.ucEfuseLength);
-
- sCACb_fuse = getASICProfilingInfo->sCACb;
-
- sInput_FuseValues.usEfuseIndex = sCACb_fuse.usEfuseIndex;
- sInput_FuseValues.ucBitShift = sCACb_fuse.ucEfuseBitLSB;
- sInput_FuseValues.ucBitLength = sCACb_fuse.ucEfuseLength;
- sOutput_FuseValues.sEfuse = sInput_FuseValues;
-
- result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
- GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
- (uint32_t *)&sOutput_FuseValues, sizeof(sOutput_FuseValues));
-
- if (result)
- return result;
-
- ul_CACb_fused = le32_to_cpu(sOutput_FuseValues.ulEfuseValue);
- fMin = GetScaledFraction(le32_to_cpu(sCACb_fuse.ulEfuseMin), 1000);
- fRange = GetScaledFraction(le32_to_cpu(sCACb_fuse.ulEfuseEncodeRange), 1000);
-
- fCACb_fused = fDecodeLinearFuse(ul_CACb_fused, fMin, fRange, sCACb_fuse.ucEfuseLength);
-
- sKt_Beta_fuse = getASICProfilingInfo->sKt_b;
-
- sInput_FuseValues.usEfuseIndex = sKt_Beta_fuse.usEfuseIndex;
- sInput_FuseValues.ucBitShift = sKt_Beta_fuse.ucEfuseBitLSB;
- sInput_FuseValues.ucBitLength = sKt_Beta_fuse.ucEfuseLength;
-
- sOutput_FuseValues.sEfuse = sInput_FuseValues;
-
- result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
- GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
- (uint32_t *)&sOutput_FuseValues, sizeof(sOutput_FuseValues));
-
- if (result)
- return result;
-
- ul_Kt_Beta_fused = le32_to_cpu(sOutput_FuseValues.ulEfuseValue);
- fAverage = GetScaledFraction(le32_to_cpu(sKt_Beta_fuse.ulEfuseEncodeAverage), 1000);
- fRange = GetScaledFraction(le32_to_cpu(sKt_Beta_fuse.ulEfuseEncodeRange), 1000);
-
- fKt_Beta_fused = fDecodeLogisticFuse(ul_Kt_Beta_fused,
- fAverage, fRange, sKt_Beta_fuse.ucEfuseLength);
-
- sKv_m_fuse = getASICProfilingInfo->sKv_m;
-
- sInput_FuseValues.usEfuseIndex = sKv_m_fuse.usEfuseIndex;
- sInput_FuseValues.ucBitShift = sKv_m_fuse.ucEfuseBitLSB;
- sInput_FuseValues.ucBitLength = sKv_m_fuse.ucEfuseLength;
-
- sOutput_FuseValues.sEfuse = sInput_FuseValues;
-
- result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
- GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
- (uint32_t *)&sOutput_FuseValues, sizeof(sOutput_FuseValues));
- if (result)
- return result;
-
- ul_Kv_m_fused = le32_to_cpu(sOutput_FuseValues.ulEfuseValue);
- fAverage = GetScaledFraction(le32_to_cpu(sKv_m_fuse.ulEfuseEncodeAverage), 1000);
- fRange = GetScaledFraction((le32_to_cpu(sKv_m_fuse.ulEfuseEncodeRange) & 0x7fffffff), 1000);
- fRange = fMultiply(fRange, ConvertToFraction(-1));
-
- fKv_m_fused = fDecodeLogisticFuse(ul_Kv_m_fused,
- fAverage, fRange, sKv_m_fuse.ucEfuseLength);
-
- sKv_b_fuse = getASICProfilingInfo->sKv_b;
-
- sInput_FuseValues.usEfuseIndex = sKv_b_fuse.usEfuseIndex;
- sInput_FuseValues.ucBitShift = sKv_b_fuse.ucEfuseBitLSB;
- sInput_FuseValues.ucBitLength = sKv_b_fuse.ucEfuseLength;
- sOutput_FuseValues.sEfuse = sInput_FuseValues;
-
- result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
- GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
- (uint32_t *)&sOutput_FuseValues, sizeof(sOutput_FuseValues));
-
- if (result)
- return result;
-
- ul_Kv_b_fused = le32_to_cpu(sOutput_FuseValues.ulEfuseValue);
- fAverage = GetScaledFraction(le32_to_cpu(sKv_b_fuse.ulEfuseEncodeAverage), 1000);
- fRange = GetScaledFraction(le32_to_cpu(sKv_b_fuse.ulEfuseEncodeRange), 1000);
-
- fKv_b_fused = fDecodeLogisticFuse(ul_Kv_b_fused,
- fAverage, fRange, sKv_b_fuse.ucEfuseLength);
-
- /* Decoding the Leakage - No special struct container */
- /*
- * usLkgEuseIndex=56
- * ucLkgEfuseBitLSB=6
- * ucLkgEfuseLength=10
- * ulLkgEncodeLn_MaxDivMin=69077
- * ulLkgEncodeMax=1000000
- * ulLkgEncodeMin=1000
- * ulEfuseLogisticAlpha=13
- */
-
- sInput_FuseValues.usEfuseIndex = getASICProfilingInfo->usLkgEuseIndex;
- sInput_FuseValues.ucBitShift = getASICProfilingInfo->ucLkgEfuseBitLSB;
- sInput_FuseValues.ucBitLength = getASICProfilingInfo->ucLkgEfuseLength;
-
- sOutput_FuseValues.sEfuse = sInput_FuseValues;
-
- result = amdgpu_atom_execute_table(adev->mode_info.atom_context,
- GetIndexIntoMasterTable(COMMAND, ReadEfuseValue),
- (uint32_t *)&sOutput_FuseValues, sizeof(sOutput_FuseValues));
-
- if (result)
- return result;
-
- ul_FT_Lkg_V0NORM = le32_to_cpu(sOutput_FuseValues.ulEfuseValue);
- fLn_MaxDivMin = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulLkgEncodeLn_MaxDivMin), 10000);
- fMin = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulLkgEncodeMin), 10000);
-
- fFT_Lkg_V0NORM = fDecodeLeakageID(ul_FT_Lkg_V0NORM,
- fLn_MaxDivMin, fMin, getASICProfilingInfo->ucLkgEfuseLength);
- fLkg_FT = fFT_Lkg_V0NORM;
-
- /*-------------------------------------------
- * PART 2 - Grabbing all required values
- *-------------------------------------------
- */
- fSM_A0 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A0), 1000000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A0_sign)));
- fSM_A1 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A1), 1000000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A1_sign)));
- fSM_A2 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A2), 100000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A2_sign)));
- fSM_A3 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A3), 1000000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A3_sign)));
- fSM_A4 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A4), 1000000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A4_sign)));
- fSM_A5 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A5), 1000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A5_sign)));
- fSM_A6 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A6), 1000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A6_sign)));
- fSM_A7 = fMultiply(GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulSM_A7), 1000),
- ConvertToFraction(uPow(-1, getASICProfilingInfo->ucSM_A7_sign)));
-
- fMargin_RO_a = ConvertToFraction(le32_to_cpu(getASICProfilingInfo->ulMargin_RO_a));
- fMargin_RO_b = ConvertToFraction(le32_to_cpu(getASICProfilingInfo->ulMargin_RO_b));
- fMargin_RO_c = ConvertToFraction(le32_to_cpu(getASICProfilingInfo->ulMargin_RO_c));
-
- fMargin_fixed = ConvertToFraction(le32_to_cpu(getASICProfilingInfo->ulMargin_fixed));
-
- fMargin_FMAX_mean = GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulMargin_Fmax_mean), 10000);
- fMargin_Plat_mean = GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulMargin_plat_mean), 10000);
- fMargin_FMAX_sigma = GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulMargin_Fmax_sigma), 10000);
- fMargin_Plat_sigma = GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulMargin_plat_sigma), 10000);
-
- fMargin_DC_sigma = GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulMargin_DC_sigma), 100);
- fMargin_DC_sigma = fDivide(fMargin_DC_sigma, ConvertToFraction(1000));
-
- fCACm_fused = fDivide(fCACm_fused, ConvertToFraction(100));
- fCACb_fused = fDivide(fCACb_fused, ConvertToFraction(100));
- fKt_Beta_fused = fDivide(fKt_Beta_fused, ConvertToFraction(100));
- fKv_m_fused = fNegate(fDivide(fKv_m_fused, ConvertToFraction(100)));
- fKv_b_fused = fDivide(fKv_b_fused, ConvertToFraction(10));
-
- fSclk = GetScaledFraction(sclk, 100);
-
- fV_max = fDivide(GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulMaxVddc), 1000), ConvertToFraction(4));
- fT_prod = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulBoardCoreTemp), 10);
- fLKG_Factor = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulEvvLkgFactor), 100);
- fT_FT = GetScaledFraction(le32_to_cpu(getASICProfilingInfo->ulLeakageTemp), 10);
- fV_FT = fDivide(GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulLeakageVoltage), 1000), ConvertToFraction(4));
- fV_min = fDivide(GetScaledFraction(
- le32_to_cpu(getASICProfilingInfo->ulMinVddc), 1000), ConvertToFraction(4));
-
- /*-----------------------
- * PART 3
- *-----------------------
- */
-
- fA_Term = fAdd(fMargin_RO_a, fAdd(fMultiply(fSM_A4, fSclk), fSM_A5));
- fB_Term = fAdd(fAdd(fMultiply(fSM_A2, fSclk), fSM_A6), fMargin_RO_b);
- fC_Term = fAdd(fMargin_RO_c,
- fAdd(fMultiply(fSM_A0, fLkg_FT),
- fAdd(fMultiply(fSM_A1, fMultiply(fLkg_FT, fSclk)),
- fAdd(fMultiply(fSM_A3, fSclk),
- fSubtract(fSM_A7, fRO_fused)))));
-
- fVDDC_base = fSubtract(fRO_fused,
- fSubtract(fMargin_RO_c,
- fSubtract(fSM_A3, fMultiply(fSM_A1, fSclk))));
- fVDDC_base = fDivide(fVDDC_base, fAdd(fMultiply(fSM_A0, fSclk), fSM_A2));
-
- repeat = fSubtract(fVDDC_base,
- fDivide(fMargin_DC_sigma, ConvertToFraction(1000)));
-
- fRO_DC_margin = fAdd(fMultiply(fMargin_RO_a,
- fGetSquare(repeat)),
- fAdd(fMultiply(fMargin_RO_b, repeat),
- fMargin_RO_c));
-
- fDC_SCLK = fSubtract(fRO_fused,
- fSubtract(fRO_DC_margin,
- fSubtract(fSM_A3,
- fMultiply(fSM_A2, repeat))));
- fDC_SCLK = fDivide(fDC_SCLK, fAdd(fMultiply(fSM_A0, repeat), fSM_A1));
-
- fSigma_DC = fSubtract(fSclk, fDC_SCLK);
-
- fMicro_FMAX = fMultiply(fSclk, fMargin_FMAX_mean);
- fMicro_CR = fMultiply(fSclk, fMargin_Plat_mean);
- fSigma_FMAX = fMultiply(fSclk, fMargin_FMAX_sigma);
- fSigma_CR = fMultiply(fSclk, fMargin_Plat_sigma);
-
- fSquared_Sigma_DC = fGetSquare(fSigma_DC);
- fSquared_Sigma_CR = fGetSquare(fSigma_CR);
- fSquared_Sigma_FMAX = fGetSquare(fSigma_FMAX);
-
- fSclk_margin = fAdd(fMicro_FMAX,
- fAdd(fMicro_CR,
- fAdd(fMargin_fixed,
- fSqrt(fAdd(fSquared_Sigma_FMAX,
- fAdd(fSquared_Sigma_DC, fSquared_Sigma_CR))))));
- /*
- fA_Term = fSM_A4 * (fSclk + fSclk_margin) + fSM_A5;
- fB_Term = fSM_A2 * (fSclk + fSclk_margin) + fSM_A6;
- fC_Term = fRO_DC_margin + fSM_A0 * fLkg_FT + fSM_A1 * fLkg_FT * (fSclk + fSclk_margin) + fSM_A3 * (fSclk + fSclk_margin) + fSM_A7 - fRO_fused;
- */
-
- fA_Term = fAdd(fMultiply(fSM_A4, fAdd(fSclk, fSclk_margin)), fSM_A5);
- fB_Term = fAdd(fMultiply(fSM_A2, fAdd(fSclk, fSclk_margin)), fSM_A6);
- fC_Term = fAdd(fRO_DC_margin,
- fAdd(fMultiply(fSM_A0, fLkg_FT),
- fAdd(fMultiply(fMultiply(fSM_A1, fLkg_FT),
- fAdd(fSclk, fSclk_margin)),
- fAdd(fMultiply(fSM_A3,
- fAdd(fSclk, fSclk_margin)),
- fSubtract(fSM_A7, fRO_fused)))));
-
- SolveQuadracticEqn(fA_Term, fB_Term, fC_Term, fRoots);
-
- if (GreaterThan(fRoots[0], fRoots[1]))
- fEVV_V = fRoots[1];
- else
- fEVV_V = fRoots[0];
-
- if (GreaterThan(fV_min, fEVV_V))
- fEVV_V = fV_min;
- else if (GreaterThan(fEVV_V, fV_max))
- fEVV_V = fSubtract(fV_max, fStepSize);
-
- fEVV_V = fRoundUpByStepSize(fEVV_V, fStepSize, 0);
-
- /*-----------------
- * PART 4
- *-----------------
- */
-
- fV_x = fV_min;
-
- while (GreaterThan(fAdd(fV_max, fStepSize), fV_x)) {
- fTDP_Power_left = fMultiply(fMultiply(fMultiply(fAdd(
- fMultiply(fCACm_fused, fV_x), fCACb_fused), fSclk),
- fGetSquare(fV_x)), fDerateTDP);
-
- fTDP_Power_right = fMultiply(fFT_Lkg_V0NORM, fMultiply(fLKG_Factor,
- fMultiply(fExponential(fMultiply(fAdd(fMultiply(fKv_m_fused,
- fT_prod), fKv_b_fused), fV_x)), fV_x)));
- fTDP_Power_right = fMultiply(fTDP_Power_right, fExponential(fMultiply(
- fKt_Beta_fused, fT_prod)));
- fTDP_Power_right = fDivide(fTDP_Power_right, fExponential(fMultiply(
- fAdd(fMultiply(fKv_m_fused, fT_prod), fKv_b_fused), fV_FT)));
- fTDP_Power_right = fDivide(fTDP_Power_right, fExponential(fMultiply(
- fKt_Beta_fused, fT_FT)));
-
- fTDP_Power = fAdd(fTDP_Power_left, fTDP_Power_right);
-
- fTDP_Current = fDivide(fTDP_Power, fV_x);
-
- fV_NL = fAdd(fV_x, fDivide(fMultiply(fTDP_Current, fRLL_LoadLine),
- ConvertToFraction(10)));
-
- fV_NL = fRoundUpByStepSize(fV_NL, fStepSize, 0);
-
- if (GreaterThan(fV_max, fV_NL) &&
- (GreaterThan(fV_NL, fEVV_V) ||
- Equal(fV_NL, fEVV_V))) {
- fV_NL = fMultiply(fV_NL, ConvertToFraction(1000));
-
- *voltage = (uint16_t)fV_NL.partial.real;
- break;
- } else
- fV_x = fAdd(fV_x, fStepSize);
- }
-
- return result;
-}
-
/**
* atomctrl_get_voltage_evv_on_sclk: gets voltage via call to ATOM COMMAND table.
* @hwmgr: input: pointer to hwManager
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.h
index 1f987e846628..22b0ac12df97 100644
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.h
+++ b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppatomctrl.h
@@ -316,8 +316,6 @@ extern int atomctrl_get_engine_pll_dividers_kong(struct pp_hwmgr *hwmgr,
pp_atomctrl_clock_dividers_kong *dividers);
extern int atomctrl_read_efuse(struct pp_hwmgr *hwmgr, uint16_t start_index,
uint16_t end_index, uint32_t *efuse);
-extern int atomctrl_calculate_voltage_evv_on_sclk(struct pp_hwmgr *hwmgr, uint8_t voltage_type,
- uint32_t sclk, uint16_t virtual_voltage_Id, uint16_t *voltage, uint16_t dpm_level, bool debug);
extern int atomctrl_get_engine_pll_dividers_ai(struct pp_hwmgr *hwmgr, uint32_t clock_value, pp_atomctrl_clock_dividers_ai *dividers);
extern int atomctrl_set_ac_timing_ai(struct pp_hwmgr *hwmgr, uint32_t memory_clock,
uint8_t level);
diff --git a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h b/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h
deleted file mode 100644
index 409aeec6baa9..000000000000
--- a/drivers/gpu/drm/amd/pm/powerplay/hwmgr/ppevvmath.h
+++ /dev/null
@@ -1,561 +0,0 @@
-/*
- * 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 <asm/div64.h>
-
-enum ppevvmath_constants {
- /* We multiply all original integers with 2^SHIFT_AMOUNT to get the fInt representation */
- SHIFT_AMOUNT = 16,
-
- /* Change this value to change the number of decimal places in the final output - 5 is a good default */
- PRECISION = 5,
-
- SHIFTED_2 = (2 << SHIFT_AMOUNT),
-
- /* 32767 - Might change in the future */
- MAX = (1 << (SHIFT_AMOUNT - 1)) - 1,
-};
-
-/* -------------------------------------------------------------------------------
- * NEW TYPE - fINT
- * -------------------------------------------------------------------------------
- * A variable of type fInt can be accessed in 3 ways using the dot (.) operator
- * fInt A;
- * A.full => The full number as it is. Generally not easy to read
- * A.partial.real => Only the integer portion
- * A.partial.decimal => Only the fractional portion
- */
-typedef union _fInt {
- int full;
- struct _partial {
- unsigned int decimal: SHIFT_AMOUNT; /*Needs to always be unsigned*/
- int real: 32 - SHIFT_AMOUNT;
- } partial;
-} fInt;
-
-/* -------------------------------------------------------------------------------
- * Function Declarations
- * -------------------------------------------------------------------------------
- */
-static fInt ConvertToFraction(int); /* Use this to convert an INT to a FINT */
-static fInt Convert_ULONG_ToFraction(uint32_t); /* Use this to convert an uint32_t to a FINT */
-static fInt GetScaledFraction(int, int); /* Use this to convert an INT to a FINT after scaling it by a factor */
-static int ConvertBackToInteger(fInt); /* Convert a FINT back to an INT that is scaled by 1000 (i.e. last 3 digits are the decimal digits) */
-
-static fInt fNegate(fInt); /* Returns -1 * input fInt value */
-static fInt fAdd (fInt, fInt); /* Returns the sum of two fInt numbers */
-static fInt fSubtract (fInt A, fInt B); /* Returns A-B - Sometimes easier than Adding negative numbers */
-static fInt fMultiply (fInt, fInt); /* Returns the product of two fInt numbers */
-static fInt fDivide (fInt A, fInt B); /* Returns A/B */
-static fInt fGetSquare(fInt); /* Returns the square of a fInt number */
-static fInt fSqrt(fInt); /* Returns the Square Root of a fInt number */
-
-static int uAbs(int); /* Returns the Absolute value of the Int */
-static int uPow(int base, int exponent); /* Returns base^exponent an INT */
-
-static void SolveQuadracticEqn(fInt, fInt, fInt, fInt[]); /* Returns the 2 roots via the array */
-static bool Equal(fInt, fInt); /* Returns true if two fInts are equal to each other */
-static bool GreaterThan(fInt A, fInt B); /* Returns true if A > B */
-
-static fInt fExponential(fInt exponent); /* Can be used to calculate e^exponent */
-static fInt fNaturalLog(fInt value); /* Can be used to calculate ln(value) */
-
-/* Fuse decoding functions
- * -------------------------------------------------------------------------------------
- */
-static fInt fDecodeLinearFuse(uint32_t fuse_value, fInt f_min, fInt f_range, uint32_t bitlength);
-static fInt fDecodeLogisticFuse(uint32_t fuse_value, fInt f_average, fInt f_range, uint32_t bitlength);
-static fInt fDecodeLeakageID (uint32_t leakageID_fuse, fInt ln_max_div_min, fInt f_min, uint32_t bitlength);
-
-/* Internal Support Functions - Use these ONLY for testing or adding to internal functions
- * -------------------------------------------------------------------------------------
- * Some of the following functions take two INTs as their input - This is unsafe for a variety of reasons.
- */
-static fInt Divide (int, int); /* Divide two INTs and return result as FINT */
-static fInt fNegate(fInt);
-
-static int uGetScaledDecimal (fInt); /* Internal function */
-static int GetReal (fInt A); /* Internal function */
-
-/* -------------------------------------------------------------------------------------
- * TROUBLESHOOTING INFORMATION
- * -------------------------------------------------------------------------------------
- * 1) ConvertToFraction - InputOutOfRangeException: Only accepts numbers smaller than MAX (default: 32767)
- * 2) fAdd - OutputOutOfRangeException: Output bigger than MAX (default: 32767)
- * 3) fMultiply - OutputOutOfRangeException:
- * 4) fGetSquare - OutputOutOfRangeException:
- * 5) fDivide - DivideByZeroException
- * 6) fSqrt - NegativeSquareRootException: Input cannot be a negative number
- */
-
-/* -------------------------------------------------------------------------------------
- * START OF CODE
- * -------------------------------------------------------------------------------------
- */
-static fInt fExponential(fInt exponent) /*Can be used to calculate e^exponent*/
-{
- uint32_t i;
- bool bNegated = false;
-
- fInt fPositiveOne = ConvertToFraction(1);
- fInt fZERO = ConvertToFraction(0);
-
- fInt lower_bound = Divide(78, 10000);
- fInt solution = fPositiveOne; /*Starting off with baseline of 1 */
- fInt error_term;
-
- static const uint32_t k_array[11] = {55452, 27726, 13863, 6931, 4055, 2231, 1178, 606, 308, 155, 78};
- static const uint32_t expk_array[11] = {2560000, 160000, 40000, 20000, 15000, 12500, 11250, 10625, 10313, 10156, 10078};
-
- if (GreaterThan(fZERO, exponent)) {
- exponent = fNegate(exponent);
- bNegated = true;
- }
-
- while (GreaterThan(exponent, lower_bound)) {
- for (i = 0; i < 11; i++) {
- if (GreaterThan(exponent, GetScaledFraction(k_array[i], 10000))) {
- exponent = fSubtract(exponent, GetScaledFraction(k_array[i], 10000));
- solution = fMultiply(solution, GetScaledFraction(expk_array[i], 10000));
- }
- }
- }
-
- error_term = fAdd(fPositiveOne, exponent);
-
- solution = fMultiply(solution, error_term);
-
- if (bNegated)
- solution = fDivide(fPositiveOne, solution);
-
- return solution;
-}
-
-static fInt fNaturalLog(fInt value)
-{
- uint32_t i;
- fInt upper_bound = Divide(8, 1000);
- fInt fNegativeOne = ConvertToFraction(-1);
- fInt solution = ConvertToFraction(0); /*Starting off with baseline of 0 */
- fInt error_term;
-
- static const uint32_t k_array[10] = {160000, 40000, 20000, 15000, 12500, 11250, 10625, 10313, 10156, 10078};
- static const uint32_t logk_array[10] = {27726, 13863, 6931, 4055, 2231, 1178, 606, 308, 155, 78};
-
- while (GreaterThan(fAdd(value, fNegativeOne), upper_bound)) {
- for (i = 0; i < 10; i++) {
- if (GreaterThan(value, GetScaledFraction(k_array[i], 10000))) {
- value = fDivide(value, GetScaledFraction(k_array[i], 10000));
- solution = fAdd(solution, GetScaledFraction(logk_array[i], 10000));
- }
- }
- }
-
- error_term = fAdd(fNegativeOne, value);
-
- return fAdd(solution, error_term);
-}
-
-static fInt fDecodeLinearFuse(uint32_t fuse_value, fInt f_min, fInt f_range, uint32_t bitlength)
-{
- fInt f_fuse_value = Convert_ULONG_ToFraction(fuse_value);
- fInt f_bit_max_value = Convert_ULONG_ToFraction((uPow(2, bitlength)) - 1);
-
- fInt f_decoded_value;
-
- f_decoded_value = fDivide(f_fuse_value, f_bit_max_value);
- f_decoded_value = fMultiply(f_decoded_value, f_range);
- f_decoded_value = fAdd(f_decoded_value, f_min);
-
- return f_decoded_value;
-}
-
-
-static fInt fDecodeLogisticFuse(uint32_t fuse_value, fInt f_average, fInt f_range, uint32_t bitlength)
-{
- fInt f_fuse_value = Convert_ULONG_ToFraction(fuse_value);
- fInt f_bit_max_value = Convert_ULONG_ToFraction((uPow(2, bitlength)) - 1);
-
- fInt f_CONSTANT_NEG13 = ConvertToFraction(-13);
- fInt f_CONSTANT1 = ConvertToFraction(1);
-
- fInt f_decoded_value;
-
- f_decoded_value = fSubtract(fDivide(f_bit_max_value, f_fuse_value), f_CONSTANT1);
- f_decoded_value = fNaturalLog(f_decoded_value);
- f_decoded_value = fMultiply(f_decoded_value, fDivide(f_range, f_CONSTANT_NEG13));
- f_decoded_value = fAdd(f_decoded_value, f_average);
-
- return f_decoded_value;
-}
-
-static fInt fDecodeLeakageID (uint32_t leakageID_fuse, fInt ln_max_div_min, fInt f_min, uint32_t bitlength)
-{
- fInt fLeakage;
- fInt f_bit_max_value = Convert_ULONG_ToFraction((uPow(2, bitlength)) - 1);
-
- fLeakage = fMultiply(ln_max_div_min, Convert_ULONG_ToFraction(leakageID_fuse));
- fLeakage = fDivide(fLeakage, f_bit_max_value);
- fLeakage = fExponential(fLeakage);
- fLeakage = fMultiply(fLeakage, f_min);
-
- return fLeakage;
-}
-
-static fInt ConvertToFraction(int X) /*Add all range checking here. Is it possible to make fInt a private declaration? */
-{
- fInt temp;
-
- if (X <= MAX)
- temp.full = (X << SHIFT_AMOUNT);
- else
- temp.full = 0;
-
- return temp;
-}
-
-static fInt fNegate(fInt X)
-{
- fInt CONSTANT_NEGONE = ConvertToFraction(-1);
- return fMultiply(X, CONSTANT_NEGONE);
-}
-
-static fInt Convert_ULONG_ToFraction(uint32_t X)
-{
- fInt temp;
-
- if (X <= MAX)
- temp.full = (X << SHIFT_AMOUNT);
- else
- temp.full = 0;
-
- return temp;
-}
-
-static fInt GetScaledFraction(int X, int factor)
-{
- int times_shifted, factor_shifted;
- bool bNEGATED;
- fInt fValue;
-
- times_shifted = 0;
- factor_shifted = 0;
- bNEGATED = false;
-
- if (X < 0) {
- X = -1*X;
- bNEGATED = true;
- }
-
- if (factor < 0) {
- factor = -1*factor;
- bNEGATED = !bNEGATED; /*If bNEGATED = true due to X < 0, this will cover the case of negative cancelling negative */
- }
-
- if ((X > MAX) || factor > MAX) {
- if ((X/factor) <= MAX) {
- while (X > MAX) {
- X = X >> 1;
- times_shifted++;
- }
-
- while (factor > MAX) {
- factor = factor >> 1;
- factor_shifted++;
- }
- } else {
- fValue.full = 0;
- return fValue;
- }
- }
-
- if (factor == 1)
- return ConvertToFraction(X);
-
- fValue = fDivide(ConvertToFraction(X * uPow(-1, bNEGATED)), ConvertToFraction(factor));
-
- fValue.full = fValue.full << times_shifted;
- fValue.full = fValue.full >> factor_shifted;
-
- return fValue;
-}
-
-/* Addition using two fInts */
-static fInt fAdd (fInt X, fInt Y)
-{
- fInt Sum;
-
- Sum.full = X.full + Y.full;
-
- return Sum;
-}
-
-/* Addition using two fInts */
-static fInt fSubtract (fInt X, fInt Y)
-{
- fInt Difference;
-
- Difference.full = X.full - Y.full;
-
- return Difference;
-}
-
-static bool Equal(fInt A, fInt B)
-{
- if (A.full == B.full)
- return true;
- else
- return false;
-}
-
-static bool GreaterThan(fInt A, fInt B)
-{
- if (A.full > B.full)
- return true;
- else
- return false;
-}
-
-static fInt fMultiply (fInt X, fInt Y) /* Uses 64-bit integers (int64_t) */
-{
- fInt Product;
- int64_t tempProduct;
-
- /*The following is for a very specific common case: Non-zero number with ONLY fractional portion*/
- /* TEMPORARILY DISABLED - CAN BE USED TO IMPROVE PRECISION
- bool X_LessThanOne, Y_LessThanOne;
-
- X_LessThanOne = (X.partial.real == 0 && X.partial.decimal != 0 && X.full >= 0);
- Y_LessThanOne = (Y.partial.real == 0 && Y.partial.decimal != 0 && Y.full >= 0);
-
- if (X_LessThanOne && Y_LessThanOne) {
- Product.full = X.full * Y.full;
- return Product
- }*/
-
- tempProduct = ((int64_t)X.full) * ((int64_t)Y.full); /*Q(16,16)*Q(16,16) = Q(32, 32) - Might become a negative number! */
- tempProduct = tempProduct >> 16; /*Remove lagging 16 bits - Will lose some precision from decimal; */
- Product.full = (int)tempProduct; /*The int64_t will lose the leading 16 bits that were part of the integer portion */
-
- return Product;
-}
-
-static fInt fDivide (fInt X, fInt Y)
-{
- fInt fZERO, fQuotient;
- int64_t longlongX, longlongY;
-
- fZERO = ConvertToFraction(0);
-
- if (Equal(Y, fZERO))
- return fZERO;
-
- longlongX = (int64_t)X.full;
- longlongY = (int64_t)Y.full;
-
- longlongX = longlongX << 16; /*Q(16,16) -> Q(32,32) */
-
- div64_s64(longlongX, longlongY); /*Q(32,32) divided by Q(16,16) = Q(16,16) Back to original format */
-
- fQuotient.full = (int)longlongX;
- return fQuotient;
-}
-
-static int ConvertBackToInteger (fInt A) /*THIS is the function that will be used to check with the Golden settings table*/
-{
- fInt fullNumber, scaledDecimal, scaledReal;
-
- scaledReal.full = GetReal(A) * uPow(10, PRECISION-1); /* DOUBLE CHECK THISSSS!!! */
-
- scaledDecimal.full = uGetScaledDecimal(A);
-
- fullNumber = fAdd(scaledDecimal, scaledReal);
-
- return fullNumber.full;
-}
-
-static fInt fGetSquare(fInt A)
-{
- return fMultiply(A, A);
-}
-
-/* x_new = x_old - (x_old^2 - C) / (2 * x_old) */
-static fInt fSqrt(fInt num)
-{
- fInt F_divide_Fprime, Fprime;
- fInt test;
- fInt twoShifted;
- int seed, counter, error;
- fInt x_new, x_old, C, y;
-
- fInt fZERO = ConvertToFraction(0);
-
- /* (0 > num) is the same as (num < 0), i.e., num is negative */
-
- if (GreaterThan(fZERO, num) || Equal(fZERO, num))
- return fZERO;
-
- C = num;
-
- if (num.partial.real > 3000)
- seed = 60;
- else if (num.partial.real > 1000)
- seed = 30;
- else if (num.partial.real > 100)
- seed = 10;
- else
- seed = 2;
-
- counter = 0;
-
- if (Equal(num, fZERO)) /*Square Root of Zero is zero */
- return fZERO;
-
- twoShifted = ConvertToFraction(2);
- x_new = ConvertToFraction(seed);
-
- do {
- counter++;
-
- x_old.full = x_new.full;
-
- test = fGetSquare(x_old); /*1.75*1.75 is reverting back to 1 when shifted down */
- y = fSubtract(test, C); /*y = f(x) = x^2 - C; */
-
- Fprime = fMultiply(twoShifted, x_old);
- F_divide_Fprime = fDivide(y, Fprime);
-
- x_new = fSubtract(x_old, F_divide_Fprime);
-
- error = ConvertBackToInteger(x_new) - ConvertBackToInteger(x_old);
-
- if (counter > 20) /*20 is already way too many iterations. If we dont have an answer by then, we never will*/
- return x_new;
-
- } while (uAbs(error) > 0);
-
- return x_new;
-}
-
-static void SolveQuadracticEqn(fInt A, fInt B, fInt C, fInt Roots[])
-{
- fInt *pRoots = &Roots[0];
- fInt temp, root_first, root_second;
- fInt f_CONSTANT10, f_CONSTANT100;
-
- f_CONSTANT100 = ConvertToFraction(100);
- f_CONSTANT10 = ConvertToFraction(10);
-
- while (GreaterThan(A, f_CONSTANT100) || GreaterThan(B, f_CONSTANT100) || GreaterThan(C, f_CONSTANT100)) {
- A = fDivide(A, f_CONSTANT10);
- B = fDivide(B, f_CONSTANT10);
- C = fDivide(C, f_CONSTANT10);
- }
-
- temp = fMultiply(ConvertToFraction(4), A); /* root = 4*A */
- temp = fMultiply(temp, C); /* root = 4*A*C */
- temp = fSubtract(fGetSquare(B), temp); /* root = b^2 - 4AC */
- temp = fSqrt(temp); /*root = Sqrt (b^2 - 4AC); */
-
- root_first = fSubtract(fNegate(B), temp); /* b - Sqrt(b^2 - 4AC) */
- root_second = fAdd(fNegate(B), temp); /* b + Sqrt(b^2 - 4AC) */
-
- root_first = fDivide(root_first, ConvertToFraction(2)); /* [b +- Sqrt(b^2 - 4AC)]/[2] */
- root_first = fDivide(root_first, A); /*[b +- Sqrt(b^2 - 4AC)]/[2*A] */
-
- root_second = fDivide(root_second, ConvertToFraction(2)); /* [b +- Sqrt(b^2 - 4AC)]/[2] */
- root_second = fDivide(root_second, A); /*[b +- Sqrt(b^2 - 4AC)]/[2*A] */
-
- *(pRoots + 0) = root_first;
- *(pRoots + 1) = root_second;
-}
-
-/* -----------------------------------------------------------------------------
- * SUPPORT FUNCTIONS
- * -----------------------------------------------------------------------------
- */
-
-/* Conversion Functions */
-static int GetReal (fInt A)
-{
- return (A.full >> SHIFT_AMOUNT);
-}
-
-static fInt Divide (int X, int Y)
-{
- fInt A, B, Quotient;
-
- A.full = X << SHIFT_AMOUNT;
- B.full = Y << SHIFT_AMOUNT;
-
- Quotient = fDivide(A, B);
-
- return Quotient;
-}
-
-static int uGetScaledDecimal (fInt A) /*Converts the fractional portion to whole integers - Costly function */
-{
- int dec[PRECISION];
- int i, scaledDecimal = 0, tmp = A.partial.decimal;
-
- for (i = 0; i < PRECISION; i++) {
- dec[i] = tmp / (1 << SHIFT_AMOUNT);
- tmp = tmp - ((1 << SHIFT_AMOUNT)*dec[i]);
- tmp *= 10;
- scaledDecimal = scaledDecimal + dec[i]*uPow(10, PRECISION - 1 - i);
- }
-
- return scaledDecimal;
-}
-
-static int uPow(int base, int power)
-{
- if (power == 0)
- return 1;
- else
- return (base)*uPow(base, power - 1);
-}
-
-static int uAbs(int X)
-{
- if (X < 0)
- return (X * -1);
- else
- return X;
-}
-
-static fInt fRoundUpByStepSize(fInt A, fInt fStepSize, bool error_term)
-{
- fInt solution;
-
- solution = fDivide(A, fStepSize);
- solution.partial.decimal = 0; /*All fractional digits changes to 0 */
-
- if (error_term)
- solution.partial.real += 1; /*Error term of 1 added */
-
- solution = fMultiply(solution, fStepSize);
- solution = fAdd(solution, fStepSize);
-
- return solution;
-}
-
--
2.46.2
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