diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/HT/Features/htFeatSublinks.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/HT/Features/htFeatSublinks.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/HT/Features/htFeatSublinks.c b/src/vendorcode/amd/agesa/f14/Proc/HT/Features/htFeatSublinks.c new file mode 100644 index 0000000000..4c4d6568e2 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/HT/Features/htFeatSublinks.c @@ -0,0 +1,232 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * SubLink management Routines. + * + * Contains routines for subLink frequency ratios. + * + * @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 "amdlib.h" +#include "Topology.h" +#include "htFeat.h" +#include "IdsHt.h" +#include "htFeatSublinks.h" +#include "Filecode.h" +CODE_GROUP (G1_PEICC) +RDATA_GROUP (G1_PEICC) + +#define FILECODE PROC_HT_FEATURES_HTFEATSUBLINKS_FILECODE +/*---------------------------------------------------------------------------- + * DEFINITIONS AND MACROS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * TYPEDEFS AND STRUCTURES + * + *---------------------------------------------------------------------------- + */ + +typedef struct { + UINT8 HiFreq; + UINT8 LoFreq; +} VALID_RATIO_ITEM; + +STATIC CONST VALID_RATIO_ITEM ROMDATA ValidRatioList[] = +{ + {HT_FREQUENCY_3200M, HT_FREQUENCY_1600M}, // 3200MHz / 1600MHz 2:1 + {HT_FREQUENCY_3200M, HT_FREQUENCY_800M}, // 3200MHz / 800MHz 4:1 + {HT_FREQUENCY_3200M, HT_FREQUENCY_400M}, // 3200MHz / 400MHz 8:1 + {HT_FREQUENCY_2800M, HT_FREQUENCY_1400M}, // 2800MHz / 1400MHz 2:1 + {HT_FREQUENCY_2400M, HT_FREQUENCY_1200M}, // 2400MHz / 1200MHz 2:1 + {HT_FREQUENCY_2400M, HT_FREQUENCY_600M}, // 2400MHz / 600MHz 4:1 + {HT_FREQUENCY_2400M, HT_FREQUENCY_400M}, // 2400MHz / 400MHz 6:1 + {HT_FREQUENCY_2000M, HT_FREQUENCY_1000M}, // 2000MHz / 1000MHz 2:1 + {HT_FREQUENCY_1600M, HT_FREQUENCY_800M}, // 1600MHz / 800MHz 2:1 + {HT_FREQUENCY_1600M, HT_FREQUENCY_400M}, // 1600MHz / 400MHz 4:1 + {HT_FREQUENCY_1600M, HT_FREQUENCY_200M}, // 1600MHz / 200Mhz 8:1 + {HT_FREQUENCY_1200M, HT_FREQUENCY_600M}, // 1200MHz / 600MHz 2:1 + {HT_FREQUENCY_1200M, HT_FREQUENCY_200M}, // 1200MHz / 200MHz 6:1 + {HT_FREQUENCY_800M, HT_FREQUENCY_400M}, // 800MHz / 400MHz 2:1 + {HT_FREQUENCY_800M, HT_FREQUENCY_200M}, // 800MHz / 200MHz 4:1 + {HT_FREQUENCY_400M, HT_FREQUENCY_200M} // 400MHz / 200MHz 2:1 +}; + +/*---------------------------------------------------------------------------- + * PROTOTYPES OF LOCAL FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * EXPORTED FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * LOCAL FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*************************************************************************** + *** Link Optimization *** + ***************************************************************************/ + +/*----------------------------------------------------------------------------------------*/ +/** + * Iterate through all Links, checking the frequency of each subLink pair. + * + * @HtFeatMethod{::F_SUBLINK_RATIO_FIXUP} + * + * Make the adjustment to the port list data so that the frequencies + * are at a valid ratio, reducing frequency as needed to achieve + * this. (All Links support the minimum 200 MHz frequency.) Repeat + * the above until no adjustments are needed. + * @note no hardware state changes in this routine. + * + * @param[in,out] State Link state and port list + * + */ +VOID +SubLinkRatioFixup ( + IN OUT STATE_DATA *State + ) +{ + UINT8 i; + UINT8 j; + UINT8 ValidRatioItem; + BOOLEAN Changes; + BOOLEAN Downgrade; + UINT8 HiIndex; + UINT8 HiFreq; + UINT8 LoFreq; + + UINT32 Temp; + + do { + Changes = FALSE; + for (i = 0; i < State->TotalLinks*2; i++) { + // Must be a CPU Link + if ((*State->PortList)[i].Type != PORTLIST_TYPE_CPU) { + continue; + } + // Only look for subLink1's + if ((*State->PortList)[i].Link < 4) { + continue; + } + + for (j = 0; j < State->TotalLinks*2; j++) { + // Step 1. Find the matching subLink0 + if ((*State->PortList)[j].Type != PORTLIST_TYPE_CPU) { + continue; + } + if ((*State->PortList)[j].NodeID != (*State->PortList)[i].NodeID) { + continue; + } + if ((*State->PortList)[j].Link != ((*State->PortList)[i].Link & 0x03)) { + continue; + } + + // Step 2. Check for an illegal frequency ratio + if ((*State->PortList)[i].SelFrequency >= (*State->PortList)[j].SelFrequency) { + HiIndex = i; + HiFreq = (*State->PortList)[i].SelFrequency; + LoFreq = (*State->PortList)[j].SelFrequency; + } else { + HiIndex = j; + HiFreq = (*State->PortList)[j].SelFrequency; + LoFreq = (*State->PortList)[i].SelFrequency; + } + + // The frequencies are 1:1, no need to do anything + if (HiFreq == LoFreq) { + break; + } + + Downgrade = TRUE; + + for (ValidRatioItem = 0; ValidRatioItem < (sizeof (ValidRatioList) / sizeof (VALID_RATIO_ITEM)); ValidRatioItem++) { + if ((HiFreq == ValidRatioList[ValidRatioItem].HiFreq) && + (LoFreq == ValidRatioList[ValidRatioItem].LoFreq)) { + Downgrade = FALSE; + break; + } + } + + // Step 3. Downgrade the higher of the two frequencies, and set Changes to FALSE + if (Downgrade) { + // Although the problem was with the port specified by hiIndex, we need to + // Downgrade both ends of the Link. + HiIndex = HiIndex & 0xFE; // Select the 'upstream' (i.e. even) port + + Temp = (*State->PortList)[HiIndex].CompositeFrequencyCap; + + // Remove HiFreq from the list of valid frequencies + Temp = Temp & ~((UINT32)1 << HiFreq); + ASSERT (Temp != 0); + (*State->PortList)[HiIndex].CompositeFrequencyCap = (UINT32)Temp; + (*State->PortList)[HiIndex + 1].CompositeFrequencyCap = (UINT32)Temp; + + HiFreq = LibAmdBitScanReverse (Temp); + + (*State->PortList)[HiIndex].SelFrequency = HiFreq; + (*State->PortList)[HiIndex + 1].SelFrequency = HiFreq; + + Changes = TRUE; + } + } + } + } while (Changes); // Repeat until a valid configuration is reached +} |