diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbPcieInitLibV1/PciePowerMgmt.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbPcieInitLibV1/PciePowerMgmt.c | 424 |
1 files changed, 424 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbPcieInitLibV1/PciePowerMgmt.c b/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbPcieInitLibV1/PciePowerMgmt.c new file mode 100644 index 0000000000..f15a582b5b --- /dev/null +++ b/src/vendorcode/amd/agesa/f15tn/Proc/GNB/Modules/GnbPcieInitLibV1/PciePowerMgmt.c @@ -0,0 +1,424 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * Power saving features/services + * + * + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: GNB + * @e \$Revision: 63425 $ @e \$Date: 2011-12-22 11:24:10 -0600 (Thu, 22 Dec 2011) $ + * + */ +/* +***************************************************************************** +* +* Copyright 2008 - 2012 ADVANCED MICRO DEVICES, INC. All Rights Reserved. +* +* AMD is granting you permission to use this software (the Materials) +* pursuant to the terms and conditions of your Software License Agreement +* with AMD. This header does *NOT* give you permission to use the Materials +* or any rights under AMD's intellectual property. Your use of any portion +* of these Materials shall constitute your acceptance of those terms and +* conditions. If you do not agree to the terms and conditions of the Software +* License Agreement, please do not use any portion of these Materials. +* +* CONFIDENTIALITY: The Materials and all other information, identified as +* confidential and provided to you by AMD shall be kept confidential in +* accordance with the terms and conditions of the Software License Agreement. +* +* LIMITATION OF LIABILITY: THE MATERIALS AND ANY OTHER RELATED INFORMATION +* PROVIDED TO YOU BY AMD ARE PROVIDED "AS IS" WITHOUT ANY EXPRESS OR IMPLIED +* WARRANTY OF ANY KIND, INCLUDING BUT NOT LIMITED TO WARRANTIES OF +* MERCHANTABILITY, NONINFRINGEMENT, TITLE, FITNESS FOR ANY PARTICULAR PURPOSE, +* OR WARRANTIES ARISING FROM CONDUCT, COURSE OF DEALING, OR USAGE OF TRADE. +* IN NO EVENT SHALL AMD OR ITS LICENSORS BE LIABLE FOR ANY DAMAGES WHATSOEVER +* (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF PROFITS, BUSINESS +* INTERRUPTION, OR LOSS OF INFORMATION) ARISING OUT OF AMD'S NEGLIGENCE, +* GROSS NEGLIGENCE, THE USE OF OR INABILITY TO USE THE MATERIALS OR ANY OTHER +* RELATED INFORMATION PROVIDED TO YOU BY AMD, EVEN IF AMD HAS BEEN ADVISED OF +* THE POSSIBILITY OF SUCH DAMAGES. BECAUSE SOME JURISDICTIONS PROHIBIT THE +* EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES, +* THE ABOVE LIMITATION MAY NOT APPLY TO YOU. +* +* AMD does not assume any responsibility for any errors which may appear in +* the Materials or any other related information provided to you by AMD, or +* result from use of the Materials or any related information. +* +* You agree that you will not reverse engineer or decompile the Materials. +* +* NO SUPPORT OBLIGATION: AMD is not obligated to furnish, support, or make any +* further information, software, technical information, know-how, or show-how +* available to you. Additionally, AMD retains the right to modify the +* Materials at any time, without notice, and is not obligated to provide such +* modified Materials to you. +* +* U.S. GOVERNMENT RESTRICTED RIGHTS: The Materials are provided with +* "RESTRICTED RIGHTS." Use, duplication, or disclosure by the Government is +* subject to the restrictions as set forth in FAR 52.227-14 and +* DFAR252.227-7013, et seq., or its successor. Use of the Materials by the +* Government constitutes acknowledgement of AMD's proprietary rights in them. +* +* EXPORT ASSURANCE: You agree and certify that neither the Materials, nor any +* direct product thereof will be exported directly or indirectly, into any +* country prohibited by the United States Export Administration Act and the +* regulations thereunder, without the required authorization from the U.S. +* government nor will be used for any purpose prohibited by the same. +* *************************************************************************** +* +*/ + +/*---------------------------------------------------------------------------------------- + * M O D U L E S U S E D + *---------------------------------------------------------------------------------------- + */ +#include "AGESA.h" +#include "Ids.h" +#include "amdlib.h" +#include "Gnb.h" +#include "GnbPcie.h" +#include "GnbCommonLib.h" +#include "GnbPcieConfig.h" +#include "GnbPcieInitLibV1.h" +#include "GnbRegistersLN.h" +#include "Filecode.h" +#define FILECODE PROC_GNB_MODULES_GNBPCIEINITLIBV1_PCIEPOWERMGMT_FILECODE + +/*---------------------------------------------------------------------------------------- + * D E F I N I T I O N S A N D M A C R O S + *---------------------------------------------------------------------------------------- + */ + + +/*---------------------------------------------------------------------------------------- + * T Y P E D E F S A N D S T R U C T U R E S + *---------------------------------------------------------------------------------------- + */ + + +/*---------------------------------------------------------------------------------------- + * P R O T O T Y P E S O F L O C A L F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + +/*----------------------------------------------------------------------------------------*/ +/** + * Power down unused lanes and plls + * + * + * @param[in] Wrapper Pointer to wrapper config descriptor + * @param[in] Pcie Pointer to global PCIe configuration + */ + +VOID +PciePwrPowerDownUnusedLanes ( + IN PCIe_WRAPPER_CONFIG *Wrapper, + IN PCIe_PLATFORM_CONFIG *Pcie + ) +{ + UINT32 UnusedLanes; + UINT32 AllLanes; + IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrPowerDownUnusedLanes Enter\n"); + if (Wrapper->Features.PowerOffUnusedPlls != 0) { + AllLanes = PcieUtilGetWrapperLaneBitMap (LANE_TYPE_PHY_NATIVE_ALL, 0, Wrapper); + UnusedLanes = PcieUtilGetWrapperLaneBitMap (LANE_TYPE_PHY_NATIVE_ALL, LANE_TYPE_PCIE_PHY_NATIVE_ALLOC_ACTIVE, Wrapper); + if (AllLanes != UnusedLanes) { + //Some lanes end up beeing used. We should keep master PLL powered up + UnusedLanes = PcieUtilGetWrapperLaneBitMap (LANE_TYPE_PHY_NATIVE_ALL, LANE_TYPE_PCIE_PHY_NATIVE_ALLOC_ACTIVE | LANE_TYPE_PCIE_PHY_NATIVE_MASTER_PLL, Wrapper); + } + PciePifPllPowerDown ( + UnusedLanes, + Wrapper, + Pcie + ); + } + if (Wrapper->Features.PowerOffUnusedLanes != 0) { + UnusedLanes = PcieUtilGetWrapperLaneBitMap (LANE_TYPE_CORE_ALL, LANE_TYPE_PCIE_CORE_ALLOC_ACTIVE, Wrapper); + PcieTopologyLaneControl ( + DisableLanes, + UnusedLanes, + Wrapper, + Pcie + ); + } + IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrPowerDownUnusedLanes Exit\n"); +} + + +/*----------------------------------------------------------------------------------------*/ +/** + * Lane bitmam to enable PLL power down in L1 + * + * + * @param[in] PllPowerUpLatency Pointer to wrapper config descriptor + * @param[in] Wrapper Pointer to wrapper config descriptor + * @param[in] Pcie Pointer to global PCIe configuration + * @retval Lane bitmap for which PLL can be powered down in L1 + */ + +UINT32 +PcieLanesToPowerDownPllInL1 ( + IN UINT8 PllPowerUpLatency, + IN PCIe_WRAPPER_CONFIG *Wrapper, + IN PCIe_PLATFORM_CONFIG *Pcie + ) +{ + UINT8 LaneGroupExitLatency [4]; + UINT32 LaneBitmapForPllOffInL1; + PCIe_ENGINE_CONFIG *EngineList; + UINTN Index; + IDS_HDT_CONSOLE (GNB_TRACE, "PcieLanesToPowerDownPllInL1 Enter\n"); + LaneBitmapForPllOffInL1 = 0; + if (PcieUtilGetWrapperLaneBitMap (LANE_TYPE_PCIE_PHY_NATIVE_ALLOC_ACTIVE | LANE_TYPE_PCIE_PHY_NATIVE_HOTPLUG, 0, Wrapper) != 0) { + if (Wrapper->Features.PllOffInL1 != 0) { + LibAmdMemFill (&LaneGroupExitLatency[0], 0xFF, sizeof (LaneGroupExitLatency), GnbLibGetHeader (Pcie)); + EngineList = PcieConfigGetChildEngine (Wrapper); + while (EngineList != NULL) { + PCIe_ASPM_LATENCY_INFO LinkLatencyInfo; + UINT32 ActiveLanesBitmap; + UINT32 HotplugLanesBitmap; + if (EngineList->EngineData.EngineType == PciePortEngine) { + LinkLatencyInfo.MaxL1ExitLatency = 0; + LinkLatencyInfo.MaxL0sExitLatency = 0; + ActiveLanesBitmap = PcieUtilGetEngineLaneBitMap (LANE_TYPE_PCIE_PHY_NATIVE_ALLOC_ACTIVE, 0, EngineList); + HotplugLanesBitmap = PcieUtilGetEngineLaneBitMap (LANE_TYPE_PCIE_PHY_NATIVE_HOTPLUG, 0, EngineList); + if (ActiveLanesBitmap != 0 && HotplugLanesBitmap == 0 && !PcieConfigIsSbPcieEngine (EngineList)) { + PcieAspmGetMaxExitLatency (EngineList->Type.Port.Address, &LinkLatencyInfo, GnbLibGetHeader (Pcie)); + } + if (HotplugLanesBitmap != 0 || PcieConfigIsSbPcieEngine (EngineList)) { + LinkLatencyInfo.MaxL1ExitLatency = 0xff; + } + IDS_HDT_CONSOLE (GNB_TRACE, " Engine %d Active Lanes 0x%x, Hotplug Lanes 0x%x\n", EngineList->Type.Port.NativeDevNumber, ActiveLanesBitmap, HotplugLanesBitmap); + for (Index = 0; Index < 4; Index++) { + if ((ActiveLanesBitmap & (0xF << (Index * 4))) != 0) { + if (LaneGroupExitLatency [Index] > LinkLatencyInfo.MaxL1ExitLatency) { + IDS_HDT_CONSOLE (GNB_TRACE, " Index %d Latency %d\n", Index, LinkLatencyInfo.MaxL1ExitLatency); + LaneGroupExitLatency [Index] = LinkLatencyInfo.MaxL1ExitLatency; + } + } + } + } + EngineList = PcieLibGetNextDescriptor (EngineList); + } + LaneBitmapForPllOffInL1 = 0; + for (Index = 0; Index < 4; Index++) { + IDS_HDT_CONSOLE (GNB_TRACE, " Index %d Final Latency %d\n", Index, LaneGroupExitLatency[Index]); + if (LaneGroupExitLatency[Index] > PllPowerUpLatency) { + LaneBitmapForPllOffInL1 |= (0xF << (Index * 4)); + } + } + } + } + IDS_HDT_CONSOLE (GNB_TRACE, " Lane bitmap %04x\n", LaneBitmapForPllOffInL1); + IDS_HDT_CONSOLE (GNB_TRACE, "PcieLanesToPowerDownPllInL1 Exit\n"); + return LaneBitmapForPllOffInL1; +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Auto-Power Down electrical Idle detector + * + * + * @param[in] Wrapper Pointer to wrapper config descriptor + * @param[in] Pcie Pointer to global PCIe configuration + */ + +VOID +PciePwrAutoPowerDownElectricalIdleDetector ( + IN PCIe_WRAPPER_CONFIG *Wrapper, + IN PCIe_PLATFORM_CONFIG *Pcie + ) +{ + UINT8 Pif; + IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrAutoPowerDownElectricalIdleDetector Enter\n"); + for (Pif = 0; Pif < Wrapper->NumberOfPIFs; Pif++) { + PcieRegisterWriteField ( + Wrapper, + PIF_SPACE (Wrapper->WrapId, Pif, D0F0xE4_PIF_0010_ADDRESS), + D0F0xE4_PIF_0010_EiDetCycleMode_OFFSET, + D0F0xE4_PIF_0010_EiDetCycleMode_WIDTH, + 0x0, + TRUE, + Pcie + ); + + PcieRegisterWriteField ( + Wrapper, + PIF_SPACE (Wrapper->WrapId, Pif, 0x10 ), + 20 , + 3 /*D0F0xE4_PIF_0010_EiCycleOffTime_WIDTH*/, + 0x2, + TRUE, + Pcie + ); + + PcieRegisterWriteField ( + Wrapper, + PIF_SPACE (Wrapper->WrapId, Pif, D0F0xE4_PIF_0010_ADDRESS), + D0F0xE4_PIF_0010_EiDetCycleMode_OFFSET, + D0F0xE4_PIF_0010_EiDetCycleMode_WIDTH, + 0x1, + TRUE, + Pcie + ); + } + IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrAutoPowerDownElectricalIdleDetector Exit\n"); +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Clock gating + * + * + * + * @param[in] Wrapper Pointer to wrapper config descriptor + * @param[in] Pcie Pointer to global PCIe configuration + */ + +VOID +PciePwrClockGating ( + IN PCIe_WRAPPER_CONFIG *Wrapper, + IN PCIe_PLATFORM_CONFIG *Pcie + ) +{ + ex501_STRUCT ex501 ; + D0F0xE4_WRAP_8012_STRUCT D0F0xE4_WRAP_8012; + D0F0xE4_WRAP_8014_STRUCT D0F0xE4_WRAP_8014; + D0F0xE4_WRAP_8015_STRUCT D0F0xE4_WRAP_8015; + ex688_STRUCT ex688 ; + UINT8 CoreId; + IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrClockGating Enter\n"); + D0F0xE4_WRAP_8014.Value = PcieRegisterRead ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, D0F0xE4_WRAP_8014_ADDRESS), + Pcie + ); + D0F0xE4_WRAP_8015.Value = PcieRegisterRead ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, D0F0xE4_WRAP_8015_ADDRESS), + Pcie + ); + + D0F0xE4_WRAP_8012.Value = PcieRegisterRead ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, D0F0xE4_WRAP_8012_ADDRESS), + Pcie + ); + + ex501.Value = PcieRegisterRead ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, 0x8011 ), + Pcie + ); + + if (Wrapper->Features.ClkGating == 0x1) { + D0F0xE4_WRAP_8014.Field.TxclkPermGateEnable = 0x1; + D0F0xE4_WRAP_8014.Field.TxclkPrbsGateEnable = 0x1; + + D0F0xE4_WRAP_8014.Field.PcieGatePifA1xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.PcieGatePifB1xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.PcieGatePifC1xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.PcieGatePifD1xEnable = 0x1; + + D0F0xE4_WRAP_8014.Field.PcieGatePifA2p5xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.PcieGatePifB2p5xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.PcieGatePifC2p5xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.PcieGatePifD2p5xEnable = 0x1; + + + ex501.Field.TxclkDynGateEnable = 0x1; + ex501.Field.TxclkRegsGateEnable = 0x1; + ex501.Field.TxclkLcntGateEnable = 0x1; + ex501.Field.RcvrDetClkEnable = 0x1; + ex501.Field.TxclkPermGateEven = 0x1; + ex501.Field.TxclkDynGateLatency = 0x3f; + ex501.Field.TxclkRegsGateLatency = 0x3f; + ex501.Field.TxclkPermGateLatency = 0x3f; + + D0F0xE4_WRAP_8012.Field.Pif2p5xIdleResumeLatency = 0x7; + D0F0xE4_WRAP_8012.Field.Pif2p5xIdleGateEnable = 0x1; + D0F0xE4_WRAP_8012.Field.Pif2p5xIdleGateLatency = 0x1; + D0F0xE4_WRAP_8012.Field.Pif1xIdleResumeLatency = 0x7; + D0F0xE4_WRAP_8012.Field.Pif1xIdleGateEnable = 0x1; + D0F0xE4_WRAP_8012.Field.Pif1xIdleGateLatency = 0x1; + + D0F0xE4_WRAP_8015.Field.RefclkBphyGateEnable = 0x1; + D0F0xE4_WRAP_8015.Field.RefclkBphyGateLatency = 0x0; + D0F0xE4_WRAP_8015.Field.RefclkRegsGateEnable = 0x1; + D0F0xE4_WRAP_8015.Field.RefclkRegsGateLatency = 0x3f; + + D0F0xE4_WRAP_8014.Field.DdiGateDigAEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGateDigBEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifA1xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifB1xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifC1xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifD1xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifA2p5xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifB2p5xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifC2p5xEnable = 0x1; + D0F0xE4_WRAP_8014.Field.DdiGatePifD2p5xEnable = 0x1; + } + if (Wrapper->Features.TxclkGatingPllPowerDown == 0x1) { + D0F0xE4_WRAP_8014.Field.TxclkPermGateOnlyWhenPllPwrDn = 0x1; + } + PcieRegisterWrite ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, D0F0xE4_WRAP_8014_ADDRESS), + D0F0xE4_WRAP_8014.Value, + TRUE, + Pcie + ); + PcieRegisterWrite ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, D0F0xE4_WRAP_8015_ADDRESS), + D0F0xE4_WRAP_8015.Value, + TRUE, + Pcie + ); + PcieRegisterWrite ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, D0F0xE4_WRAP_8012_ADDRESS), + D0F0xE4_WRAP_8012.Value, + TRUE, + Pcie + ); + PcieRegisterWrite ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, 0x8011 ), + ex501.Value, + TRUE, + Pcie + ); + for (CoreId = Wrapper->StartPcieCoreId; CoreId <= Wrapper->EndPcieCoreId; CoreId++) { + PcieRegisterWriteField ( + Wrapper, + CORE_SPACE (CoreId, 0x11 ), + 0 , + 4 , + 0xf, + TRUE, + Pcie + ); + } + if (Wrapper->Features.LclkGating == 0x1) { + ex688.Value = PcieRegisterRead ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, 0x8016 ), + Pcie + ); + ex688.Field.LclkDynGateEnable = 0x1; + ex688.Field.LclkGateFree = 0x1; + PcieRegisterWrite ( + Wrapper, + WRAP_SPACE (Wrapper->WrapId, 0x8016 ), + ex688.Value, + TRUE, + Pcie + ); + } + IDS_HDT_CONSOLE (GNB_TRACE, "PciePwrClockGating Exit\n"); +} + + |