diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f15/Proc/HT/Features/htFeatGanging.c')
-rw-r--r-- | src/vendorcode/amd/agesa/f15/Proc/HT/Features/htFeatGanging.c | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f15/Proc/HT/Features/htFeatGanging.c b/src/vendorcode/amd/agesa/f15/Proc/HT/Features/htFeatGanging.c new file mode 100644 index 0000000000..533d376871 --- /dev/null +++ b/src/vendorcode/amd/agesa/f15/Proc/HT/Features/htFeatGanging.c @@ -0,0 +1,218 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * Routines for re-ganging Links. + * + * Implement the reganging feature. + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: HyperTransport + * @e \$Revision: 56279 $ @e \$Date: 2011-07-11 13:11:28 -0600 (Mon, 11 Jul 2011) $ + * + */ +/* +***************************************************************************** +* +* Copyright (C) 2012 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 "amdlib.h" +#include "Ids.h" +#include "Topology.h" +#include "htFeat.h" +#include "htInterface.h" +#include "htNb.h" +#include "htFeatGanging.h" +#include "Filecode.h" +CODE_GROUP (G1_PEICC) +RDATA_GROUP (G2_PEI) + +#define FILECODE PROC_HT_FEATURES_HTFEATGANGING_FILECODE +/*---------------------------------------------------------------------------- + * DEFINITIONS AND MACROS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * TYPEDEFS AND STRUCTURES + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * PROTOTYPES OF LOCAL FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * EXPORTED FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*---------------------------------------------------------------------------- + * LOCAL FUNCTIONS + * + *---------------------------------------------------------------------------- + */ + +/*************************************************************************** + *** Link Optimization *** + ***************************************************************************/ + +/*----------------------------------------------------------------------------------------*/ +/** + * Test the subLinks of a Link to see if they qualify to be reganged. + * + * @HtFeatMethod{::F_REGANG_LINKS} + * + * If they do, update the port list data to indicate that this should be done. + * @note no actual hardware state is changed in this routine. + * + * @param[in,out] State Our global state + */ +VOID +RegangLinks ( + IN OUT STATE_DATA *State + ) +{ + FINAL_LINK_STATE FinalLinkState; + UINT8 i; + UINT8 j; + for (i = 0; i < (State->TotalLinks * 2); i += 2) { + // Data validation + ASSERT ((*State->PortList)[i].Type < 2 && (*State->PortList)[i].Link < State->Nb->MaxLinks); + ASSERT ((*State->PortList)[i + 1].Type < 2 && (*State->PortList)[i + 1].Link < State->Nb->MaxLinks); + + // Regang is false unless we pass all conditions below + (*State->PortList)[i].SelRegang = FALSE; + (*State->PortList)[i + 1].SelRegang = FALSE; + + // Only process cpu to cpu Links + if ( ((*State->PortList)[i].Type != PORTLIST_TYPE_CPU) || + ((*State->PortList)[i + 1].Type != PORTLIST_TYPE_CPU)) { + continue; + } + + for (j = i + 2; j < State->TotalLinks*2; j += 2) { + // Only process cpu to cpu Links + if ( ((*State->PortList)[j].Type != PORTLIST_TYPE_CPU) || + ((*State->PortList)[j + 1].Type != PORTLIST_TYPE_CPU) ) { + continue; + } + + // Links must be from the same source + if ((*State->PortList)[i].NodeID != (*State->PortList)[j].NodeID) { + continue; + } + + // Link must be to the same target + if ((*State->PortList)[i + 1].NodeID != (*State->PortList)[j + 1].NodeID) { + continue; + } + + // Ensure same source base port + if (((*State->PortList)[i].Link & 3) != ((*State->PortList)[j].Link & 3)) { + continue; + } + + // Ensure same destination base port + if (((*State->PortList)[i + 1].Link & 3) != ((*State->PortList)[j + 1].Link & 3)) { + continue; + } + + // Ensure subLink0 routes to subLink0 + if (((*State->PortList)[i].Link & 4) != ((*State->PortList)[i + 1].Link & 4)) { + continue; + } + + // (therefore subLink1 routes to subLink1) + ASSERT (((*State->PortList)[j].Link & 4) == ((*State->PortList)[j + 1].Link & 4)); + + FinalLinkState = State->HtInterface->GetSkipRegang ((*State->PortList)[i].NodeID, + (*State->PortList)[i].Link & 0x03, + (*State->PortList)[i + 1].NodeID, + (*State->PortList)[i + 1].Link & 0x03, + State); + if (FinalLinkState == MATCHED) { + continue; + } else if (FinalLinkState == POWERED_OFF) { + // StopLink will be done on the sublink 1, thus OR in 4 to the link to ensure it. + State->Nb->StopLink ((*State->PortList)[i].NodeID, ((*State->PortList)[i].Link | 4), State, State->Nb); + State->Nb->StopLink ((*State->PortList)[i + 1].NodeID, ((*State->PortList)[i + 1].Link | 4), State, State->Nb); + } + + // + // Create a ganged portlist entry for the two regang-able subLinks. + // + // All info will be that of subLink zero. + // (If Link discovery order was other than ascending, fix the .Pointer field too.) + // + // + if (((*State->PortList)[i].Link & 4) != 0) { + (*State->PortList)[i].Pointer = (*State->PortList)[j].Pointer; + (*State->PortList)[i + 1].Pointer = (*State->PortList)[j + 1].Pointer; + } + (*State->PortList)[i].Link &= 0x03; // Force to point to subLink0 + (*State->PortList)[i + 1].Link &= 0x03; + // If powered off, sublink 1 is removed but the link is still 8 bits. + if (FinalLinkState != POWERED_OFF) { + (*State->PortList)[i].SelRegang = TRUE; // Enable Link reganging + (*State->PortList)[i + 1].SelRegang = TRUE; + (*State->PortList)[i].PrvWidthOutCap = HT_WIDTH_16_BITS; + (*State->PortList)[i + 1].PrvWidthOutCap = HT_WIDTH_16_BITS; + (*State->PortList)[i].PrvWidthInCap = HT_WIDTH_16_BITS; + (*State->PortList)[i + 1].PrvWidthInCap = HT_WIDTH_16_BITS; + } + + // Delete PortList[j, j + 1], slow but easy to debug implementation + State->TotalLinks--; + LibAmdMemCopy (&((*State->PortList)[j]), + &((*State->PortList)[j + 2]), + sizeof (PORT_DESCRIPTOR)*(State->TotalLinks* 2 - j), + State->ConfigHandle); + LibAmdMemFill (&((*State->PortList)[State->TotalLinks * 2]), INVALID_LINK, (sizeof (PORT_DESCRIPTOR) * 2), State->ConfigHandle); + + break; // Exit loop, advance to PortList[i + 2] + } + } +} |