diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/HT/Fam10/htNbOptimizationFam10.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/HT/Fam10/htNbOptimizationFam10.c | 222 |
1 files changed, 222 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/HT/Fam10/htNbOptimizationFam10.c b/src/vendorcode/amd/agesa/f14/Proc/HT/Fam10/htNbOptimizationFam10.c new file mode 100644 index 0000000000..2ae1676e7e --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/HT/Fam10/htNbOptimizationFam10.c @@ -0,0 +1,222 @@ +/* $NoKeywords:$ */ +/** + * @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: 35136 $ @e \$Date: 2010-07-16 11:29:48 +0800 (Fri, 16 Jul 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" +CODE_GROUP (G1_PEICC) +RDATA_GROUP (G1_PEICC) + +#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] PlatformConfig Platform profile/build option config structure. + * @param[in] Nb this northbridge + * + * @return Frequency mask + */ +UINT32 +Fam10NorthBridgeFreqMask ( + IN UINT8 Node, + IN HT_INTERFACE *Interface, + IN PLATFORM_CONFIGURATION *PlatformConfig, + 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 (PlatformConfig, 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] PlatformConfig Platform profile/build option config structure. + * @param[in] Nb this northbridge + * + * @return Frequency mask + */ +UINT32 +Fam10RevDNorthBridgeFreqMask ( + IN UINT8 Node, + IN HT_INTERFACE *Interface, + IN PLATFORM_CONFIGURATION *PlatformConfig, + 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 (PlatformConfig, 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); +} |