diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f10/Proc/HT/Fam10/htNbOptimizationFam10.c')
-rwxr-xr-x | src/vendorcode/amd/agesa/f10/Proc/HT/Fam10/htNbOptimizationFam10.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f10/Proc/HT/Fam10/htNbOptimizationFam10.c b/src/vendorcode/amd/agesa/f10/Proc/HT/Fam10/htNbOptimizationFam10.c new file mode 100755 index 0000000000..4a5c515228 --- /dev/null +++ b/src/vendorcode/amd/agesa/f10/Proc/HT/Fam10/htNbOptimizationFam10.c @@ -0,0 +1,214 @@ +/** + * @file + * + * Link optimization support specific to family 10h processors. + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: HyperTransport + * @e \$Revision: 44323 $ @e \$Date: 2010-12-22 01:24:58 -0700 (Wed, 22 Dec 2010) $ + * + */ +/* +***************************************************************************** +* +* Copyright (c) 2011, Advanced Micro Devices, Inc. +* All rights reserved. +* +* Redistribution and use in source and binary forms, with or without +* modification, are permitted provided that the following conditions are met: +* * Redistributions of source code must retain the above copyright +* notice, this list of conditions and the following disclaimer. +* * Redistributions in binary form must reproduce the above copyright +* notice, this list of conditions and the following disclaimer in the +* documentation and/or other materials provided with the distribution. +* * Neither the name of Advanced Micro Devices, Inc. nor the names of +* its contributors may be used to endorse or promote products derived +* from this software without specific prior written permission. +* +* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND +* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +* DISCLAIMED. IN NO EVENT SHALL ADVANCED MICRO DEVICES, INC. BE LIABLE FOR ANY +* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES +* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; +* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND +* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS +* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +* +* *************************************************************************** +* +*/ + +/* + *---------------------------------------------------------------------------- + * MODULES USED + * + *---------------------------------------------------------------------------- + */ + + + +#include "AGESA.h" +#include "Ids.h" +#include "Topology.h" +#include "htFeat.h" +#include "htInterface.h" +#include "htNb.h" +#include "htNbOptimizationFam10.h" +#include "Filecode.h" +#define FILECODE PROC_HT_FAM10_HTNBOPTIMIZATIONFAM10_FILECODE +/*---------------------------------------------------------------------------- + * DEFINITIONS AND MACROS + * + *---------------------------------------------------------------------------- + */ + +/*----------------------------------------------------------------------------------------*/ +/** + * Northbridge specific Frequency limit. + * + * @HtNbMethod{::F_NORTH_BRIDGE_FREQ_MASK} + * + * Return a mask that eliminates HT frequencies that cannot be used due to a slow + * northbridge frequency. + * + * @param[in] Node Result could (later) be for a specific Node + * @param[in] Interface Access to non-HT support functions. + * @param[in] Nb this northbridge + * + * @return Frequency mask + */ +UINT32 +Fam10NorthBridgeFreqMask ( + IN UINT8 Node, + IN HT_INTERFACE *Interface, + IN NORTHBRIDGE *Nb + ) +{ + UINT32 NbCoreFreq; + UINT32 Supported; + + ASSERT (Node < MAX_NODES); + ASSERT (Interface != NULL); + // The interface to power management will return a system based result. + // So we only need to call it once, not on every link. Save the answer, + // and check to see if we can use a saved answer on subsequent calls. + // + if (Nb->CoreFrequency == 0) { + NbCoreFreq = Interface->GetMinNbCoreFreq (Nb->ConfigHandle); + NbCoreFreq = (NbCoreFreq / 100); + ASSERT (NbCoreFreq != 0); + Nb->CoreFrequency = NbCoreFreq; + } else { + NbCoreFreq = Nb->CoreFrequency; + } + + // + // NbCoreFreq is minimum northbridge speed in hundreds of MHz. + // HT can not go faster than the minimum speed of the northbridge. + // + if ((NbCoreFreq >= 6) && (NbCoreFreq <= 26)) { + // Convert frequency to bit and all less significant bits, + // by setting next power of 2 and subtracting 1. + // + Supported = ((UINT32)1 << ((NbCoreFreq >> 1) + 2)) - 1; + } else if ((NbCoreFreq > 26) && (NbCoreFreq <= 32)) { + // Convert frequency to bit and all less significant bits, + // by setting next power of 2 and subtracting 1, noting that + // next power of two is two greater than non-extended frequencies + // (because of the register break). + // + Supported = ((UINT32)1 << ((NbCoreFreq >> 1) + 4)) - 1; + } else if (NbCoreFreq > 32) { + Supported = HT_FREQUENCY_LIMIT_MAX; + } else if (NbCoreFreq == 4) { + // unlikely cases, but include as a defensive measure, also avoid trick above + Supported = HT_FREQUENCY_LIMIT_400M; + } else if (NbCoreFreq == 2) { + Supported = HT_FREQUENCY_LIMIT_200M; + } else { + ASSERT (FALSE); + Supported = HT_FREQUENCY_LIMIT_200M; + } + + return (Supported); +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Northbridge specific Frequency limit. + * + * @HtNbMethod{::F_NORTH_BRIDGE_FREQ_MASK} + * + * Return a mask that eliminates HT frequencies that cannot be used due to a slow + * northbridge frequency. + * + * @param[in] Node Result could (later) be for a specific Node + * @param[in] Interface Access to non-HT support functions. + * @param[in] Nb this northbridge + * + * @return Frequency mask + */ +UINT32 +Fam10RevDNorthBridgeFreqMask ( + IN UINT8 Node, + IN HT_INTERFACE *Interface, + IN NORTHBRIDGE *Nb + ) +{ + UINT32 NbCoreFreq; + UINT32 Supported; + + ASSERT (Node < MAX_NODES); + ASSERT (Interface != NULL); + // The interface to power management will return a system based result. + // So we only need to call it once, not on every link. Save the answer, + // and check to see if we can use a saved answer on subsequent calls. + // + if (Nb->CoreFrequency == 0) { + NbCoreFreq = Interface->GetMinNbCoreFreq (Nb->ConfigHandle); + NbCoreFreq = (NbCoreFreq / 100); + ASSERT (NbCoreFreq != 0); + Nb->CoreFrequency = NbCoreFreq; + } else { + NbCoreFreq = Nb->CoreFrequency; + } + + // For Rev D, the Ht frequency can go twice the Nb COF, as long as it's HT3. + // (side note: we are not speculatively upgrading HT1 at 6 .. 10 to HT3, + // to avoid complicated recovery if the final speed is HT1.) + if (NbCoreFreq > 10) { + NbCoreFreq = NbCoreFreq * 2; + } + // + // NbCoreFreq is minimum northbridge speed in hundreds of MHz. + // HT can not go faster than the minimum speed of the northbridge. + // + if ((NbCoreFreq >= 6) && (NbCoreFreq <= 26)) { + // Convert frequency to bit and all less significant bits, + // by setting next power of 2 and subtracting 1. + // + Supported = ((UINT32)1 << ((NbCoreFreq >> 1) + 2)) - 1; + } else if ((NbCoreFreq > 26) && (NbCoreFreq <= 32)) { + // Convert frequency to bit and all less significant bits, + // by setting next power of 2 and subtracting 1, noting that + // next power of two is two greater than non-extended frequencies + // (because of the register break). + // + Supported = ((UINT32)1 << ((NbCoreFreq >> 1) + 4)) - 1; + } else if (NbCoreFreq > 32) { + Supported = HT_FREQUENCY_LIMIT_MAX; + } else if (NbCoreFreq == 4) { + // unlikely cases, but include as a defensive measure, also avoid trick above + Supported = HT_FREQUENCY_LIMIT_400M; + } else if (NbCoreFreq == 2) { + Supported = HT_FREQUENCY_LIMIT_200M; + } else { + ASSERT (FALSE); + Supported = HT_FREQUENCY_LIMIT_200M; + } + + return (Supported); +} |