RD890 Northbridge: AMD RD890/SR56X0 Northbridge CIMX code
[coreboot.git] / src / vendorcode / amd / cimx / rd890 / nbPcieAspm.c
diff --git a/src/vendorcode/amd/cimx/rd890/nbPcieAspm.c b/src/vendorcode/amd/cimx/rd890/nbPcieAspm.c
new file mode 100644 (file)
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--- /dev/null
@@ -0,0 +1,507 @@
+/**
+ * @file
+ *
+ * ASPM support.
+ *
+ *
+ *
+ * @xrefitem bom "File Content Label" "Release Content"
+ * @e project:      CIMx-NB
+ * @e sub-project:
+ * @e \$Revision:$   @e \$Date:$
+ *
+ */
+/*****************************************************************************
+ *
+ * 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.
+ *
+ *
+ ***************************************************************************/
+/*----------------------------------------------------------------------------------------
+ *                             M O D U L E S    U S E D
+ *----------------------------------------------------------------------------------------
+ */
+
+#include "NbPlatform.h"
+#include "amdDebugOutLib.h"
+#include "amdSbLib.h"
+
+/*----------------------------------------------------------------------------------------
+ *                   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
+PcieAspmSetOnRc (
+  IN      PCI_ADDR        Device,
+  IN      UINT8           Lx,
+  IN      AMD_NB_CONFIG   *pConfig
+  );
+
+SCAN_STATUS
+PcieSetDeviceAspm (
+  IN      PCI_SCAN_PROTOCOL   *This,
+  IN      PCI_ADDR            Function
+  );
+
+/*----------------------------------------------------------------------------------------
+ *                          E X P O R T E D    F U N C T I O N S
+ *----------------------------------------------------------------------------------------
+ */
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Init Port ASPM.
+ * Enable ASPM states on RC and EP. Only states supported  by both RC and EP
+ * will be enabled.
+ *
+ *
+ * @param[in] PortId    Pcie Port ID
+ * @param[in] AsmpState ASPM states to enable.
+ * @param[in] pConfig   Northbridge configuration structure pointer.
+ *
+ */
+/*----------------------------------------------------------------------------------------*/
+VOID
+PcieAsmpEnableOnPort (
+  IN      PORT            PortId,
+  IN      PCIE_LINK_ASPM  AsmpState,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  PCI_ADDR  Port;
+  UINT8     Lx;
+  PCI_ADDR  NbPciAddress;
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "PcieAsmpEnableOnPort Enter PortId [%d]\n", PortId));
+  NbPciAddress.AddressValue = NB_SBDFO;
+  switch (AsmpState) {
+  case PcieLinkAspmDisabled:
+    return ;
+  case PcieLinkAspmL0s:
+    Lx = ASPM_UPSTREAM_L0s | ASPM_DOWNSTREAM_L0s;
+    break;
+  case PcieLinkAspmL1:
+    Lx = ASPM_L1;
+    break;
+  case PcieLinkAspmL0sAndL1:
+    Lx = ASPM_UPSTREAM_L0s | ASPM_DOWNSTREAM_L0s | ASPM_L1;
+    break;
+  case PcieLinkAspmL0sDownstreamOnly:
+    Lx = ASPM_DOWNSTREAM_L0s;
+    break;
+  case PcieLinkAspmL0sDownstreamOnlyAndL1:
+    Lx = ASPM_DOWNSTREAM_L0s | ASPM_L1;
+    break;
+  default:
+    CIMX_ASSERT (FALSE);
+    return ;
+  }
+  Port = PcieLibGetPortPciAddress (PortId, pConfig);
+//NB-SB link
+  if (PortId == 8 && NbPciAddress.AddressValue == 0) {
+    if (PcieSbInitAspm ((Lx & ASPM_L1) | ((Lx & ASPM_UPSTREAM_L0s)?ASPM_L0s:0), pConfig) == AGESA_SUCCESS) {
+      PcieAspmEnableOnFunction (Port, (Lx & ASPM_L1) | ((Lx & ASPM_DOWNSTREAM_L0s)?ASPM_L0s:0), pConfig);
+    }
+    return ;
+  }
+  PcieAspmSetOnRc (Port, Lx, pConfig);
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "PcieAsmpEnableOnPort Exit. Lx[0x%x]\n", Lx));
+  return ;
+}
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Enable Common Clock on PCIe Link
+ *
+ *
+ *
+ * @param[in] Downstream  Downstream PCIe port PCI address
+ * @param[in] Upstream    Upstream PCIe port PCI address
+ * @param[in] pConfig     Northbridge configuration structure pointer.
+ *
+ */
+ /*----------------------------------------------------------------------------------------*/
+
+VOID
+PcieAspmEnableCommonClock (
+  IN      PCI_ADDR        Downstream,
+  IN      PCI_ADDR        Upstream,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  UINT16  DownstreamCommonClockCap;
+  UINT16  UpstreamCommonClockCap;
+  UINT16  Value;
+  UINT8   DownstreamPcieCapPtr;
+  UINT8   UpstreamPcieCapPtr;
+  DownstreamPcieCapPtr = LibNbFindPciCapability (Downstream.AddressValue, PCIE_CAP_ID, pConfig);
+  UpstreamPcieCapPtr = LibNbFindPciCapability (Upstream.AddressValue, PCIE_CAP_ID, pConfig);
+  if (DownstreamPcieCapPtr == 0 || UpstreamPcieCapPtr == 0) {
+    return ;
+  }
+  LibNbPciRead (Downstream.AddressValue | (DownstreamPcieCapPtr + 0x10) , AccessWidth16, &DownstreamCommonClockCap, pConfig);
+  if ((DownstreamCommonClockCap & BIT6) != 0) {
+    //Aready enabled
+    return ;
+  }
+  LibNbPciRead (Downstream.AddressValue | (DownstreamPcieCapPtr + 0x12) , AccessWidth16, &DownstreamCommonClockCap, pConfig);
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "    Downstream Common Clock Capability %d:%d:%d - %x\n", Downstream.Address.Bus, Downstream.Address.Device, Downstream.Address.Function,  DownstreamCommonClockCap));
+  LibNbPciRead (Upstream.AddressValue | (UpstreamPcieCapPtr + 0x12) , AccessWidth16, &UpstreamCommonClockCap, pConfig);
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "    Upstream   Common Clock Capability %d:%d:%d - %x\n", Upstream.Address.Bus, Upstream.Address.Device, Upstream.Address.Function,  UpstreamCommonClockCap));
+  if ((DownstreamCommonClockCap & UpstreamCommonClockCap & BIT12) != 0) {
+    //Enable common clock
+    PcieAspmCommonClockOnFunction (Downstream, pConfig);
+    PcieAspmCommonClockOnDevice (Upstream, pConfig);
+//    LibNbPciRMW (Downstream.AddressValue | (DownstreamPcieCapPtr + 0x10) , AccessS3SaveWidth8, 0xff, BIT6, pConfig);
+//    LibNbPciRMW (Upstream.AddressValue | (UpstreamPcieCapPtr + 0x10) , AccessS3SaveWidth8, 0xff, BIT6, pConfig);
+    //Reatrain link
+    LibNbPciRMW (Downstream.AddressValue | (DownstreamPcieCapPtr + 0x10) , AccessS3SaveWidth8, 0xff, BIT5, pConfig);
+    do {
+      LibNbPciRead (Downstream.AddressValue | (DownstreamPcieCapPtr + 0x12) , AccessWidth16, (UINT16*)&Value, pConfig);
+      STALL (GET_BLOCK_CONFIG_PTR (pConfig), 200, CIMX_S3_SAVE);
+    } while ((Value & BIT11) != 0);
+  }
+}
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Set  "Common Clock" enable on function
+ *
+ *
+ *
+ * @param[in] Device      PCI address of function.
+ * @param[in] pConfig     Northbridge configuration structure pointer.
+ *
+ */
+ /*----------------------------------------------------------------------------------------*/
+VOID
+PcieAspmCommonClockOnDevice (
+  IN      PCI_ADDR        Device,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  UINT8 Value;
+  UINT8 MaxFunc;
+  UINT8 CurrentFunc;
+  LibNbPciRead (Device.AddressValue | 0x0E , AccessWidth8, &Value, pConfig);
+  MaxFunc = (Value & BIT7)?7:0;
+  for (CurrentFunc = 0; CurrentFunc <= MaxFunc; CurrentFunc++) {
+    Device.Address.Function = CurrentFunc;
+    if (LibNbIsDevicePresent (Device, pConfig)) {
+      PcieAspmCommonClockOnFunction (Device, pConfig);
+    }
+  }
+}
+
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Set  "Common Clock" enable on function
+ *
+ *
+ *
+ * @param[in] Function    PCI address of function.
+ * @param[in] pConfig     Northbridge configuration structure pointer.
+ *
+ */
+ /*----------------------------------------------------------------------------------------*/
+VOID
+PcieAspmCommonClockOnFunction (
+  IN      PCI_ADDR        Function,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  UINT8       PcieCapPtr;
+  PcieCapPtr = LibNbFindPciCapability (Function.AddressValue, PCIE_CAP_ID, pConfig);
+  if (PcieCapPtr != 0) {
+    LibNbPciRMW (Function.AddressValue | (PcieCapPtr + 0x10) , AccessS3SaveWidth8, (UINT32)~(BIT6), BIT6, pConfig);
+  }
+}
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Enable ASPM on PCIe Link
+ *
+ *
+ *
+ * @param[in] Downstream  Downstream PCIe port PCI address
+ * @param[in] Upstream    Upstream PCIe port PCI address
+ * @param[in] Lx          Lx ASPM bitmap.
+ *                          Lx[0] - reserved
+ *                          Lx[1] - L1 enable
+ *                          Lx[2] - L0s enable for upstream ports
+ *                          Lx[3] - L0s enable for downstream ports
+ * @param[in] pConfig     Northbridge configuration structure pointer.
+ *
+ */
+ /*----------------------------------------------------------------------------------------*/
+
+VOID
+PcieAspmEnableOnLink (
+  IN      PCI_ADDR        Downstream,
+  IN      PCI_ADDR        Upstream,
+  IN      UINT8           Lx,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  ASPM_LINK_INFO AspmLinkInfo;
+  AspmLinkInfo.UpstreamLxCap = PcieAspmGetPmCapability (Upstream, pConfig);
+  AspmLinkInfo.DownstreamLxCap = PcieAspmGetPmCapability (Downstream, pConfig);
+  AspmLinkInfo.DownstreamPort = Downstream;
+  AspmLinkInfo.UpstreamPort = Upstream;
+  AspmLinkInfo.RequestedLx = Lx;
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "   Downstream ASPM Capability %d:%d:%d - %x\n", Downstream.Address.Bus, Downstream.Address.Device, Downstream.Address.Function,  AspmLinkInfo.DownstreamLxCap));
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "   Upstream   ASPM Capability %d:%d:%d - %x\n", Upstream.Address.Bus, Upstream.Address.Device, Upstream.Address.Function,  AspmLinkInfo.UpstreamLxCap));
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "   Requested  ASPM State - %x\n", Lx));
+  AspmLinkInfo.DownstreamLx = AspmLinkInfo.UpstreamLxCap & AspmLinkInfo.DownstreamLxCap & Lx & ASPM_L1;
+  AspmLinkInfo.UpstreamLx = AspmLinkInfo.DownstreamLx;
+  if ((AspmLinkInfo.UpstreamLxCap & ASPM_L0s) != 0 && (Lx & ASPM_UPSTREAM_L0s) != 0) {
+    AspmLinkInfo.UpstreamLx |= ASPM_L0s;
+  }
+  if ((AspmLinkInfo.DownstreamLxCap & ASPM_L0s) != 0 && (Lx & ASPM_DOWNSTREAM_L0s) != 0) {
+    AspmLinkInfo.DownstreamLx |= ASPM_L0s;
+  }
+#ifndef ASPM_WORKAROUND_DISABLE
+  PcieAspmWorkarounds (&AspmLinkInfo, pConfig);
+#endif
+  LibNbCallBack (PHCB_AmdPcieAsmpInfo, (UINTN)&AspmLinkInfo, pConfig);
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "   Upstream   ASPM State - %x\n", AspmLinkInfo.UpstreamLx));
+  PcieAspmEnableOnDevice (Upstream, AspmLinkInfo.UpstreamLx, pConfig);
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "   Downstream ASPM State - %x\n", AspmLinkInfo.DownstreamLx));
+  PcieAspmEnableOnFunction (Downstream, AspmLinkInfo.DownstreamLx, pConfig);
+
+}
+
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Set ASMP State on all function of PCI device
+ *
+ *
+ *
+ * @param[in] Device    PCI address of device.
+ * @param[in] Lx        Lx ASPM bitmap.
+ *                        Lx[0] = L0s enable
+ *                        Lx[1] - L1 enable
+ * @param[in] pConfig   Northbridge configuration structure pointer.
+ *
+ */
+ /*----------------------------------------------------------------------------------------*/
+VOID
+PcieAspmEnableOnDevice (
+  IN      PCI_ADDR        Device,
+  IN      UINT8           Lx,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  UINT8 Value;
+  UINT8 MaxFunc;
+  UINT8 CurrentFunc;
+
+  LibNbPciRead (Device.AddressValue | 0x0E , AccessWidth8, &Value, pConfig);
+  MaxFunc = (Value & BIT7)?7:0;
+  for (CurrentFunc = 0; CurrentFunc <= MaxFunc; CurrentFunc++) {
+    Device.Address.Function = CurrentFunc;
+    if (LibNbIsDevicePresent (Device, pConfig)) {
+      PcieAspmEnableOnFunction (Device, Lx, pConfig);
+    }
+  }
+}
+/*----------------------------------------------------------------------------------------*/
+/**
+ * Set  ASMP State on PCIe device function
+ *
+ *
+ *
+ * @param[in] Function    PCI address of function.
+ * @param[in] Lx          Lx ASPM bitmap.
+ *                          Lx[0] = L0s enable
+ *                          Lx[1] - L1 enable
+ * @param[in] pConfig     Northbridge configuration structure pointer.
+ *
+ */
+ /*----------------------------------------------------------------------------------------*/
+VOID
+PcieAspmEnableOnFunction (
+  IN      PCI_ADDR        Function,
+  IN      UINT8           Lx,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  UINT8       PcieCapPtr;
+  PcieCapPtr = LibNbFindPciCapability (Function.AddressValue, PCIE_CAP_ID, pConfig);
+  if (PcieCapPtr != 0) {
+    LibNbPciRMW (Function.AddressValue | (PcieCapPtr + 0x10) , AccessS3SaveWidth8, (UINT32)~(BIT0 & BIT1), Lx, pConfig);
+  }
+}
+
+/**----------------------------------------------------------------------------------------*/
+/**
+ * Port/Endpoint ASMP capability
+ *
+ *
+ *
+ * @param[in] Device    PCI address of downstream port.
+ * @param[in] pConfig   Northbridge configuration structure pointer.
+ *
+ * @retval    Bitmap of actual supported Lx states
+ */
+ /*----------------------------------------------------------------------------------------*/
+UINT8
+PcieAspmGetPmCapability (
+  IN      PCI_ADDR        Device,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  UINT8 PcieCapPtr;
+  UINT8 Value;
+  PcieCapPtr = LibNbFindPciCapability (Device.AddressValue, PCIE_CAP_ID, pConfig);
+  if (PcieCapPtr == 0) {
+    return 0;
+  }
+  LibNbPciRead (Device.AddressValue | (PcieCapPtr + 0x0D) , AccessWidth8, &Value, pConfig);
+  return (Value >> 2) & 3;
+}
+
+
+/**----------------------------------------------------------------------------------------*/
+/**
+ * Scan PCIe topology
+ *
+ *
+ *
+ * @param[in] This          Pointer to instance of scan protocol
+ * @param[in] Function      PCI address of found device/function.
+ *
+ * @retval    SCAN_FINISHED Scan for device finished.
+ */
+ /*----------------------------------------------------------------------------------------*/
+SCAN_STATUS
+PcieSetDeviceAspm (
+  IN      PCI_SCAN_PROTOCOL   *This,
+  IN      PCI_ADDR            Function
+  )
+{
+  PCIE_DEVICE_TYPE  DeviceType;
+  UINT8             SecondaryBus;
+  ASPM_WORKSPACE    *WorkspacePtr;
+  WorkspacePtr =    (ASPM_WORKSPACE*)This;
+
+  DeviceType = PcieGetDeviceType (Function, This->pConfig);
+  if (DeviceType == PcieDeviceRootComplex || DeviceType == PcieDeviceDownstreamPort) {
+    PCI_ADDR        UpstreamDevice;
+    CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (This->pConfig), CIMX_NBPCIE_TRACE), "    Reached downstream port\n"));
+    //Lets enable Common clock
+    LibNbPciRead (Function.AddressValue | 0x19, AccessWidth8, &SecondaryBus, This->pConfig);
+    LibNbPciRMW(Function.AddressValue | 0x18, AccessS3SaveWidth32, 0xffffffff, 0, This->pConfig);  //This done to help UEFI bootscript restore bud topology.
+    if (SecondaryBus == 0) {
+      return  SCAN_FINISHED;
+    }
+    //New Downstream Port
+    WorkspacePtr->LinkCount++;
+    if (WorkspacePtr->DownstreamPort.AddressValue == 0) {
+      WorkspacePtr->DownstreamPort.AddressValue = Function.AddressValue;
+    }
+    //Lets enable Common clock
+    UpstreamDevice.AddressValue = MAKE_SBDFO (0, SecondaryBus, 0, 0, 0);
+    if (LibNbIsDevicePresent (UpstreamDevice, This->pConfig)) {
+      PcieAspmEnableCommonClock (Function, UpstreamDevice, This->pConfig);
+    }
+    This->ScanBus (This, UpstreamDevice);
+    if (WorkspacePtr->DownstreamPort.AddressValue == Function.AddressValue) {
+      WorkspacePtr->DownstreamPort.AddressValue = 0;
+      PcieAspmEnableOnLink (Function, UpstreamDevice, WorkspacePtr->Lx, This->pConfig);
+    }
+  } else if (DeviceType == PcieDeviceUpstreamPort ) {
+    PCI_ADDR DownstreamDevice;
+
+    if (WorkspacePtr->DownstreamPort.AddressValue == 0) {
+      return  SCAN_FINISHED;
+    }
+    CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (This->pConfig), CIMX_NBPCIE_TRACE), "    Reached upstream port\n"));
+    LibNbPciRead (Function.AddressValue | 0x19, AccessWidth8, &SecondaryBus, This->pConfig);
+    LibNbPciRMW(Function.AddressValue | 0x18, AccessS3SaveWidth32, 0xffffffff, 0, This->pConfig); //This done to help UEFI bootscript restore bud topology.
+    if (SecondaryBus == 0) {
+      return  SCAN_FINISHED;
+    }
+    DownstreamDevice.AddressValue = MAKE_SBDFO (0, SecondaryBus, 0, 0, 0);
+    This->ScanBus (This, DownstreamDevice);
+  } else if (DeviceType < PcieDeviceLegacyEndPoint) {
+    // We reach end of link @toDo code to check exit latency.
+    CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (This->pConfig), CIMX_NBPCIE_TRACE), "    Reached endpoint \n"));
+  }
+  return  SCAN_FINISHED;
+}
+
+/**----------------------------------------------------------------------------------------*/
+/**
+ * Scan RC PCIe topology to setup ASPM
+ *
+ *
+ *
+ * @param[in] Device    PCI address of downstream port.
+ * @param[in] Lx        Lx ASPM bitmap.
+ *                        Lx[0] - reserved
+ *                        Lx[1] - L1 enable
+ *                        Lx[2] - L0s enable for upstream ports
+ *                        Lx[3] - L0s enable for downstream ports
+ * @param[in] pConfig   Northbridge configuration structure pointer.
+ *
+ */
+ /*----------------------------------------------------------------------------------------*/
+VOID
+PcieAspmSetOnRc (
+  IN      PCI_ADDR        Device,
+  IN      UINT8           Lx,
+  IN      AMD_NB_CONFIG   *pConfig
+  )
+{
+  ASPM_WORKSPACE AspmWorkspace;
+
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "[NBPCIE]PcieSetPortAspm Enter\n"));
+  LibAmdMemFill (&AspmWorkspace, 0, sizeof (AspmWorkspace), (AMD_CONFIG_PARAMS *)&(pConfig->sHeader));
+  AspmWorkspace.ScanPciePort.pConfig = pConfig;
+  AspmWorkspace.ScanPciePort.ScanBus = LibNbScanPciBus;
+  AspmWorkspace.ScanPciePort.ScanDevice = LibNbScanPciDevice;
+  AspmWorkspace.ScanPciePort.ScanFunction = PcieSetDeviceAspm;
+  AspmWorkspace.Lx = Lx;
+  AspmWorkspace.ScanPciePort.ScanFunction (&AspmWorkspace.ScanPciePort, Device);
+  if (AspmWorkspace.LinkCount > 1) {
+    LibNbScanPciBridgeBuses (&AspmWorkspace.ScanPciePort, Device);
+  }
+  CIMX_TRACE ((TRACE_DATA (GET_BLOCK_CONFIG_PTR (pConfig), CIMX_NBPCIE_TRACE), "[NBPCIE]PcieSetPortAspm Exit\n"));
+}