| /* $NoKeywords:$ */ |
| /** |
| * @file |
| * |
| * PCIe link training |
| * |
| * |
| * |
| * @xrefitem bom "File Content Label" "Release Content" |
| * @e project: AGESA |
| * @e sub-project: GNB |
| * @e \$Revision: 38950 $ @e \$Date: 2010-10-03 23:49:09 -0700 (Sun, 03 Oct 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. |
| * |
| * *************************************************************************** |
| * |
| */ |
| |
| /*---------------------------------------------------------------------------------------- |
| * M O D U L E S U S E D |
| *---------------------------------------------------------------------------------------- |
| */ |
| #include "AGESA.h" |
| #include "Ids.h" |
| #include "amdlib.h" |
| #include "GeneralServices.h" |
| #include "Gnb.h" |
| #include "GnbPcie.h" |
| #include GNB_MODULE_DEFINITIONS (GnbCommonLib) |
| #include GNB_MODULE_DEFINITIONS (GnbPcieConfig) |
| #include GNB_MODULE_DEFINITIONS (GnbPcieInitLibV1) |
| #include "PcieWorkarounds.h" |
| #include "PcieTraining.h" |
| #include "GnbRegistersON.h" |
| #include "Filecode.h" |
| #define FILECODE PROC_GNB_MODULES_GNBPCIETRAININGV1_PCIETRAINING_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 |
| *---------------------------------------------------------------------------------------- |
| */ |
| VOID |
| PcieSetResetStateOnEngines ( |
| IN PCIe_ENGINE_CONFIG *Engine, |
| IN OUT VOID *Buffer, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ); |
| |
| VOID |
| PcieTrainingCheckResetDuration ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ); |
| |
| VOID |
| PcieTrainingDeassertReset ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ); |
| |
| VOID |
| PcieTrainingBrokenLine ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ); |
| |
| VOID |
| PcieTrainingGen2Fail ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ); |
| |
| GNB_DEBUG_CODE ( |
| VOID |
| STATIC |
| PcieTrainingDebugDumpPortState ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ); |
| ) |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Set link State |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] State State to set |
| * @param[in] UpdateTimeStamp Update time stamp |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| PcieTrainingSetPortState ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN UINT8 State, |
| IN BOOLEAN UpdateTimeStamp, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT32 TimeStamp; |
| CurrentEngine->Type.Port.State = State; |
| if (UpdateTimeStamp) { |
| TimeStamp = PcieTimerGetTimeStamp (Pcie); |
| CurrentEngine->Type.Port.TimeStamp = TimeStamp; |
| } |
| GNB_DEBUG_CODE ( |
| PcieTrainingDebugDumpPortState (CurrentEngine, Pcie) |
| ); |
| |
| } |
| |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Set state for all engines connected to same reset ID |
| * |
| * |
| * |
| * @param[in] Engine Pointer to engine config descriptor |
| * @param[in, out] Buffer Pointer to Reset Id |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| PcieSetResetStateOnEngines ( |
| IN PCIe_ENGINE_CONFIG *Engine, |
| IN OUT VOID *Buffer, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT8 ResetId; |
| ResetId = *(UINT8 *)Buffer; |
| if (Engine->Type.Port.PortData.ResetId == ResetId) { |
| PcieTrainingSetPortState (Engine, LinkStateResetDuration, TRUE, Pcie); |
| } |
| } |
| |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Assert GPIO port reset. |
| * |
| * Transition to LinkStateResetDuration state |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingAssertReset ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| PCIe_SLOT_RESET_INFO ResetInfo; |
| ResetInfo.ResetControl = AssertSlotReset; |
| ResetInfo.ResetId = CurrentEngine->Type.Port.PortData.ResetId; |
| LibAmdMemCopy (&ResetInfo.StdHeader, GnbLibGetHeader (Pcie), sizeof (AMD_CONFIG_PARAMS), GnbLibGetHeader (Pcie)); |
| AgesaPcieSlotResetControl (0, &ResetInfo); |
| PcieConfigRunProcForAllEngines ( |
| DESCRIPTOR_ALLOCATED | DESCRIPTOR_PCIE_ENGINE, |
| PcieSetResetStateOnEngines, |
| (VOID *)&CurrentEngine->Type.Port.PortData.ResetId, |
| Pcie |
| ); |
| } |
| |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Check for reset duration |
| * |
| * Transition to LinkStateResetDuration state |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| PcieTrainingCheckResetDuration ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT32 TimeStamp; |
| TimeStamp = PcieTimerGetTimeStamp (Pcie); |
| if (TIMESTAMPS_DELTA (TimeStamp, CurrentEngine->Type.Port.TimeStamp) >= Pcie->LinkGpioResetAssertionTime) { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateResetExit, FALSE, Pcie); |
| } |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Deassert GPIO port reset. |
| * |
| * Transition to LinkStateResetDuration state |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Platform configuration |
| * |
| */ |
| VOID |
| PcieTrainingDeassertReset ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| PCIe_SLOT_RESET_INFO ResetInfo; |
| ResetInfo.ResetControl = DeassertSlotReset; |
| ResetInfo.ResetId = CurrentEngine->Type.Port.PortData.ResetId; |
| LibAmdMemCopy (&ResetInfo.StdHeader, GnbLibGetHeader (Pcie), sizeof (AMD_CONFIG_PARAMS), GnbLibGetHeader (Pcie)); |
| AgesaPcieSlotResetControl (0, &ResetInfo); |
| PcieTrainingSetPortState (CurrentEngine, LinkTrainingResetTimeout, TRUE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Check for after reset deassertion timeout |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingCheckResetTimeout ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT32 TimeStamp; |
| TimeStamp = PcieTimerGetTimeStamp (Pcie); |
| if (TIMESTAMPS_DELTA (TimeStamp, CurrentEngine->Type.Port.TimeStamp) >= Pcie->LinkResetToTrainingTime) { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateReleaseTraining, FALSE, Pcie); |
| } |
| } |
| |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Release training |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingRelease ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT8 LinkTrainingState; |
| PcieRegisterWriteField ( |
| PcieEngineGetParentWrapper (CurrentEngine), |
| WRAP_SPACE (PcieEngineGetParentWrapper (CurrentEngine)->WrapId, D0F0xE4_WRAP_0800_ADDRESS + 0x100 * CurrentEngine->Type.Port.PortId), |
| D0F0xE4_WRAP_0800_HoldTraining_OFFSET, |
| D0F0xE4_WRAP_0800_HoldTraining_WIDTH, |
| 0, |
| FALSE, |
| Pcie |
| ); |
| if (CurrentEngine->Type.Port.PortData.MiscControls.LinkComplianceMode == 0x1) { |
| LinkTrainingState = LinkStateCompliance; |
| } else { |
| LinkTrainingState = LinkStateDetectPresence; |
| } |
| PcieTrainingSetPortState (CurrentEngine, LinkTrainingState, TRUE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Detect presence of any EP on the link |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| |
| VOID |
| STATIC |
| PcieTrainingDetectPresence ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT8 LinkHwStateHistory[4]; |
| UINT32 TimeStamp; |
| PcieUtilGetLinkHwStateHistory (CurrentEngine, &LinkHwStateHistory[0], 4, Pcie); |
| if (LinkHwStateHistory[0] > 4) { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateDetecting, TRUE, Pcie); |
| return; |
| } |
| TimeStamp = PcieTimerGetTimeStamp (Pcie); |
| if (TIMESTAMPS_DELTA (TimeStamp, CurrentEngine->Type.Port.TimeStamp) >= Pcie->LinkReceiverDetectionPooling) { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateDeviceNotPresent, FALSE, Pcie); |
| } |
| } |
| |
| UINT8 FailPattern1 [] = {0x2a, 0x6}; |
| UINT8 FailPattern2 [] = {0x2a, 0x9}; |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Detect Link State |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| |
| VOID |
| STATIC |
| PcieTrainingDetectLinkState ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT8 LinkHwStateHistory[16]; |
| UINT32 TimeStamp; |
| UINT8 LinkTrainingState; |
| PcieUtilGetLinkHwStateHistory (CurrentEngine, &LinkHwStateHistory[0], 4, Pcie); |
| if (LinkHwStateHistory[0] == 0x10) { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateL0, FALSE, Pcie); |
| return; |
| }; |
| TimeStamp = PcieTimerGetTimeStamp (Pcie); |
| if (TIMESTAMPS_DELTA (TimeStamp, CurrentEngine->Type.Port.TimeStamp) >= Pcie->LinkL0Pooling) { |
| LinkTrainingState = LinkStateTrainingFail; |
| PcieUtilGetLinkHwStateHistory (CurrentEngine, &LinkHwStateHistory[0], 16, Pcie); |
| if (LinkHwStateHistory[0] == 0x7) { |
| LinkTrainingState = LinkStateCompliance; |
| } else if (PcieUtilSearchArray (LinkHwStateHistory, sizeof (LinkHwStateHistory), FailPattern1, sizeof (FailPattern1))) { |
| LinkTrainingState = LinkStateBrokenLane; |
| } else if (PcieUtilSearchArray (LinkHwStateHistory, sizeof (LinkHwStateHistory), FailPattern2, sizeof (FailPattern2))) { |
| LinkTrainingState = LinkStateGen2Fail; |
| } |
| PcieTrainingSetPortState (CurrentEngine, LinkTrainingState, FALSE, Pcie); |
| } |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Broken Lane |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| |
| VOID |
| PcieTrainingBrokenLine ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT8 CurrentLinkWidth; |
| UINT8 LinkTrainingState; |
| CurrentLinkWidth = PcieUtilGetLinkWidth (CurrentEngine, Pcie); |
| if (CurrentLinkWidth < PcieConfigGetNumberOfPhyLane (CurrentEngine) && CurrentLinkWidth > 0) { |
| CurrentEngine->InitStatus |= INIT_STATUS_PCIE_PORT_BROKEN_LANE_RECOVERY; |
| PcieTopologyReduceLinkWidth (CurrentLinkWidth, CurrentEngine, Pcie); |
| LinkTrainingState = LinkStateResetAssert; |
| PutEventLog ( |
| AGESA_WARNING, |
| GNB_EVENT_BROKEN_LANE_RECOVERY, |
| CurrentEngine->Type.Port.Address.AddressValue, |
| 0, |
| 0, |
| 0, |
| GnbLibGetHeader (Pcie) |
| ); |
| } else { |
| LinkTrainingState = LinkStateGen2Fail; |
| } |
| PcieTrainingSetPortState (CurrentEngine, LinkTrainingState, FALSE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Check if link fail because device does not support Gen2 |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| PcieTrainingGen2Fail ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT8 LinkTrainingState; |
| if (CurrentEngine->Type.Port.PortData.MiscControls.LinkSafeMode != PcieGen1) { |
| PcieConfigUpdatePortStatus (CurrentEngine, INIT_STATUS_PCIE_PORT_GEN2_RECOVERY, 0); |
| CurrentEngine->Type.Port.PortData.MiscControls.LinkSafeMode = PcieGen1; |
| PcieLinkSafeMode (CurrentEngine, Pcie); |
| LinkTrainingState = LinkStateResetAssert; |
| PutEventLog ( |
| AGESA_WARNING, |
| GNB_EVENT_BROKEN_LANE_RECOVERY, |
| CurrentEngine->Type.Port.Address.AddressValue, |
| 0, |
| 0, |
| 0, |
| GnbLibGetHeader (Pcie) |
| ); |
| } else { |
| LinkTrainingState = LinkStateTrainingFail; |
| } |
| PcieTrainingSetPortState (CurrentEngine, LinkTrainingState, FALSE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Link in L0 |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieCheckLinkL0 ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateVcoNegotiation, TRUE, Pcie); |
| } |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Check if link fail because device does not support Gen X |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingCheckVcoNegotiation ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT32 TimeStamp; |
| DxF0x128_STRUCT DxF0x128; |
| TimeStamp = PcieTimerGetTimeStamp (Pcie); |
| GnbLibPciRead (CurrentEngine->Type.Port.Address.AddressValue | DxF0x128_ADDRESS, AccessWidth32, &DxF0x128, GnbLibGetHeader (Pcie)); |
| if (DxF0x128.Field.VcNegotiationPending == 0) { |
| UINT16 NumberOfPhyLane; |
| NumberOfPhyLane = PcieConfigGetNumberOfPhyLane (CurrentEngine); |
| if (Pcie->GfxCardWorkaround == GfxWorkaroundEnable && NumberOfPhyLane >= 8) { |
| // Limit exposure of workaround to x8 and x16 port. |
| PcieTrainingSetPortState (CurrentEngine, LinkStateGfxWorkaround, TRUE, Pcie); |
| } else { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateTrainingSuccess, FALSE, Pcie); |
| } |
| return; |
| } |
| if (TIMESTAMPS_DELTA (TimeStamp, CurrentEngine->Type.Port.TimeStamp) >= 1000 * 1000) { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateRetrain, FALSE, Pcie); |
| } |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Check if for GFX workaround condition |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingGfxWorkaround ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| UINT32 TimeStamp; |
| GFX_WORKAROUND_STATUS GfxWorkaroundStatus; |
| TimeStamp = PcieTimerGetTimeStamp (Pcie); |
| |
| GfxWorkaroundStatus = PcieGfxCardWorkaround (CurrentEngine->Type.Port.Address, GnbLibGetHeader (Pcie)); |
| switch (GfxWorkaroundStatus) { |
| case GFX_WORKAROUND_DEVICE_NOT_READY: |
| if (TIMESTAMPS_DELTA (TimeStamp, CurrentEngine->Type.Port.TimeStamp) >= 1000 * 2000) { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateTrainingFail, TRUE, Pcie); |
| } |
| break; |
| case GFX_WORKAROUND_SUCCESS: |
| PcieTrainingSetPortState (CurrentEngine, LinkStateTrainingSuccess, FALSE, Pcie); |
| break; |
| case GFX_WORKAROUND_RESET_DEVICE: |
| if (CurrentEngine->Type.Port.GfxWrkRetryCount < 5) { |
| CurrentEngine->Type.Port.GfxWrkRetryCount++; |
| PcieTrainingSetPortState (CurrentEngine, LinkStateResetAssert, TRUE, Pcie); |
| } else { |
| PcieTrainingSetPortState (CurrentEngine, LinkStateTrainingFail, TRUE, Pcie); |
| } |
| break; |
| default: |
| ASSERT (FALSE); |
| } |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Retrain link |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingRetrainLink ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| PciePortRegisterWriteField ( |
| CurrentEngine, |
| DxF0xE4_xA2_ADDRESS, |
| DxF0xE4_xA2_LcReconfigNow_OFFSET, |
| DxF0xE4_xA2_LcReconfigNow_WIDTH, |
| 1, |
| FALSE, |
| Pcie |
| ); |
| PcieTrainingSetPortState (CurrentEngine, LinkStateDetecting, TRUE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Training fail on this port |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingFail ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| PcieConfigUpdatePortStatus (CurrentEngine, INIT_STATUS_PCIE_PORT_TRAINING_FAIL, 0); |
| PcieTrainingSetPortState (CurrentEngine, LinkStateDeviceNotPresent, FALSE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Links training success |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| |
| VOID |
| STATIC |
| PcieTrainingSuccess ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| PcieConfigUpdatePortStatus (CurrentEngine, INIT_STATUS_PCIE_TRAINING_SUCCESS, 0); |
| PcieTrainingSetPortState (CurrentEngine, LinkStateTrainingCompleted, FALSE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Links in compliance |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingCompliance ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| PcieConfigUpdatePortStatus (CurrentEngine, INIT_STATUS_PCIE_PORT_IN_COMPLIANCE, 0); |
| PcieTrainingSetPortState (CurrentEngine, LinkStateTrainingCompleted, FALSE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * PCie EP not present |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingNotPresent ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| if ((CurrentEngine->Type.Port.PortData.LinkHotplug == HotplugEnhanced) || (CurrentEngine->Type.Port.PortData.LinkHotplug == HotplugServer)) { |
| } else { |
| PcieRegisterWriteField ( |
| PcieEngineGetParentWrapper (CurrentEngine), |
| WRAP_SPACE (PcieEngineGetParentWrapper (CurrentEngine)->WrapId, D0F0xE4_WRAP_0800_ADDRESS + 0x100 * CurrentEngine->Type.Port.PortId), |
| D0F0xE4_WRAP_0800_HoldTraining_OFFSET, |
| D0F0xE4_WRAP_0800_HoldTraining_WIDTH, |
| 1, |
| FALSE, |
| Pcie |
| ); |
| } |
| PcieTrainingSetPortState (CurrentEngine, LinkStateTrainingCompleted, FALSE, Pcie); |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Final state. Port training completed. |
| * |
| * Initialization status recorded in PCIe_ENGINE_CONFIG.InitStatus |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| VOID |
| STATIC |
| PcieTrainingCompleted ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Training state handling |
| * |
| * |
| * |
| * @param[in] Engine Pointer to engine config descriptor |
| * @param[in, out] Buffer Indicate if engine in non final state |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| |
| VOID |
| STATIC |
| PcieTrainingPortCallback ( |
| IN PCIe_ENGINE_CONFIG *Engine, |
| IN OUT VOID *Buffer, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| BOOLEAN *TrainingComplete; |
| TrainingComplete = (BOOLEAN *) Buffer; |
| if (Engine->Type.Port.State < Pcie->TrainingExitState) { |
| *TrainingComplete = FALSE; |
| } else { |
| return; |
| } |
| switch (Engine->Type.Port.State) { |
| case LinkStateResetAssert: |
| PcieTrainingAssertReset (Engine, Pcie); |
| break; |
| case LinkStateResetDuration: |
| PcieTrainingCheckResetDuration (Engine, Pcie); |
| break; |
| case LinkStateResetExit: |
| PcieTrainingDeassertReset (Engine, Pcie); |
| break; |
| case LinkTrainingResetTimeout: |
| PcieTrainingCheckResetTimeout (Engine, Pcie); |
| break; |
| case LinkStateReleaseTraining: |
| PcieTrainingRelease (Engine, Pcie); |
| break; |
| case LinkStateDetectPresence: |
| PcieTrainingDetectPresence (Engine, Pcie); |
| break; |
| case LinkStateDetecting: |
| PcieTrainingDetectLinkState (Engine, Pcie); |
| break; |
| case LinkStateBrokenLane: |
| PcieTrainingBrokenLine (Engine, Pcie); |
| break; |
| case LinkStateGen2Fail: |
| PcieTrainingGen2Fail (Engine, Pcie); |
| break; |
| case LinkStateL0: |
| PcieCheckLinkL0 (Engine, Pcie); |
| break; |
| case LinkStateVcoNegotiation: |
| PcieTrainingCheckVcoNegotiation (Engine, Pcie); |
| break; |
| case LinkStateRetrain: |
| PcieTrainingRetrainLink (Engine, Pcie); |
| break; |
| case LinkStateTrainingFail: |
| PcieTrainingFail (Engine, Pcie); |
| break; |
| case LinkStateGfxWorkaround: |
| PcieTrainingGfxWorkaround (Engine, Pcie); |
| break; |
| case LinkStateTrainingSuccess: |
| PcieTrainingSuccess (Engine, Pcie); |
| break; |
| case LinkStateCompliance: |
| PcieTrainingCompliance (Engine, Pcie); |
| break; |
| case LinkStateDeviceNotPresent: |
| PcieTrainingNotPresent (Engine, Pcie); |
| break; |
| case LinkStateTrainingCompleted: |
| PcieTrainingCompleted (Engine, Pcie); |
| break; |
| default: |
| break; |
| } |
| |
| } |
| |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Main link training procedure |
| * |
| * Port end up in three possible state LinkStateTrainingNotPresent/LinkStateCompliance/ |
| * LinkStateTrainingSuccess |
| * |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * @retval AGESA_STATUS |
| * |
| */ |
| |
| AGESA_STATUS |
| PcieTraining ( |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| AGESA_STATUS Status; |
| BOOLEAN TrainingComplete; |
| Status = AGESA_SUCCESS; |
| IDS_HDT_CONSOLE (GNB_TRACE, "PcieTraining Enter\n"); |
| do { |
| TrainingComplete = TRUE; |
| PcieConfigRunProcForAllEngines ( |
| DESCRIPTOR_ALLOCATED | DESCRIPTOR_PCIE_ENGINE, |
| PcieTrainingPortCallback, |
| &TrainingComplete, |
| Pcie |
| ); |
| } while (!TrainingComplete); |
| IDS_HDT_CONSOLE (GNB_TRACE, "PcieTraining Exit [%x]\n", Status); |
| return Status; |
| } |
| |
| /*----------------------------------------------------------------------------------------*/ |
| /** |
| * Helper function to dump port state on state transition |
| * |
| * |
| * @param[in] CurrentEngine Pointer to engine config descriptor |
| * @param[in] Pcie Pointer to global PCIe configuration |
| * |
| */ |
| |
| GNB_DEBUG_CODE ( |
| VOID |
| STATIC |
| PcieTrainingDebugDumpPortState ( |
| IN PCIe_ENGINE_CONFIG *CurrentEngine, |
| IN PCIe_PLATFORM_CONFIG *Pcie |
| ) |
| { |
| IDS_HDT_CONSOLE (PCIE_MISC, " Port %d:%d:%d State [%s] Time Stamp [%d]\n", |
| CurrentEngine->Type.Port.Address.Address.Bus, |
| CurrentEngine->Type.Port.Address.Address.Device, |
| CurrentEngine->Type.Port.Address.Address.Function, |
| (CurrentEngine->Type.Port.State == LinkStateTrainingFail) ? "LinkStateTrainingFail " : ( |
| (CurrentEngine->Type.Port.State == LinkStateTrainingSuccess) ? "LinkStateTrainingSuccess " : ( |
| (CurrentEngine->Type.Port.State == LinkStateCompliance) ? "LinkStateCompliance " : ( |
| (CurrentEngine->Type.Port.State == LinkStateDeviceNotPresent) ? "LinkStateDeviceNotPresent" : ( |
| (CurrentEngine->Type.Port.State == LinkStateResetAssert) ? "LinkStateResetAssert " : ( |
| (CurrentEngine->Type.Port.State == LinkStateResetDuration) ? "LinkStateResetDuration " : ( |
| (CurrentEngine->Type.Port.State == LinkStateResetDuration) ? "LinkStateResetExit " : ( |
| (CurrentEngine->Type.Port.State == LinkTrainingResetTimeout) ? "LinkTrainingResetTimeout " : ( |
| (CurrentEngine->Type.Port.State == LinkStateReleaseTraining) ? "LinkStateReleaseTraining " : ( |
| (CurrentEngine->Type.Port.State == LinkStateDetectPresence) ? "LinkStateDetectPresence " : ( |
| (CurrentEngine->Type.Port.State == LinkStateDetecting) ? "LinkStateDetecting " : ( |
| (CurrentEngine->Type.Port.State == LinkStateBrokenLane) ? "LinkStateBrokenLane " : ( |
| (CurrentEngine->Type.Port.State == LinkStateGen2Fail) ? "LinkStateGen2Fail " : ( |
| (CurrentEngine->Type.Port.State == LinkStateL0) ? "LinkStateL0 " : ( |
| (CurrentEngine->Type.Port.State == LinkStateVcoNegotiation) ? "LinkStateVcoNegotiation " : ( |
| (CurrentEngine->Type.Port.State == LinkStateGfxWorkaround) ? "LinkStateGfxWorkaround " : ( |
| (CurrentEngine->Type.Port.State == LinkStateTrainingCompleted) ? "LinkStateTrainingComplete" : ( |
| (CurrentEngine->Type.Port.State == LinkStateRetrain) ? "LinkStateRetrain " : ( |
| (CurrentEngine->Type.Port.State == LinkStateResetExit) ? "LinkStateResetExit " : "Unknown")))))))))))))))))), |
| CurrentEngine->Type.Port.TimeStamp |
| ); |
| } |
| ) |