diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbPcieInitLibV1/PcieAspm.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbPcieInitLibV1/PcieAspm.c | 346 |
1 files changed, 346 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbPcieInitLibV1/PcieAspm.c b/src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbPcieInitLibV1/PcieAspm.c new file mode 100644 index 0000000000..07b42315d8 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbPcieInitLibV1/PcieAspm.c @@ -0,0 +1,346 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * PCIe link ASPM + * + * + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: GNB + * @e \$Revision: 38935 $ @e \$Date: 2010-10-01 18:45:23 -0700 (Fri, 01 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 "Gnb.h" +#include "GnbPcie.h" +#include "OptionGnb.h" +#include GNB_MODULE_DEFINITIONS (GnbCommonLib) +#include GNB_MODULE_DEFINITIONS (GnbPcieInitLibV1) +#include "PcieAspmBlackList.h" +#include "Filecode.h" +#define FILECODE PROC_GNB_MODULES_GNBPCIEINITLIBV1_PCIEASPM_FILECODE +/*---------------------------------------------------------------------------------------- + * D E F I N I T I O N S A N D M A C R O S + *---------------------------------------------------------------------------------------- + */ + +extern GNB_BUILD_OPTIONS GnbBuildOptions; +/*---------------------------------------------------------------------------------------- + * T Y P E D E F S A N D S T R U C T U R E S + *---------------------------------------------------------------------------------------- + */ + +typedef struct { + GNB_PCI_SCAN_DATA ScanData; + PCIE_ASPM_TYPE Aspm; + PCI_ADDR DownstreamPort; +} PCIE_ASPM_DATA; + +/*---------------------------------------------------------------------------------------- + * 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 + *---------------------------------------------------------------------------------------- + */ + + +SCAN_STATUS +PcieAspmCallback ( + IN PCI_ADDR Device, + IN OUT GNB_PCI_SCAN_DATA *ScanData + ); + +VOID +PcieAspmEnableOnLink ( + IN PCI_ADDR Downstream, + IN PCI_ADDR Upstream, + IN PCIE_ASPM_TYPE Aspm, + IN AMD_CONFIG_PARAMS *StdHeader + ); + +PCIE_ASPM_TYPE +PcieAspmGetPmCapability ( + IN PCI_ADDR Device, + IN AMD_CONFIG_PARAMS *StdHeader + ); + +/*----------------------------------------------------------------------------------------*/ +/** + * Enable PCIE Advance state power management + * + * + * + * @param[in] DownstreamPort PCI Address of the downstream port + * @param[in] Aspm ASPM type + * @param[in] StdHeader Standard configuration header + * @retval AGESA_STATUS + */ + +VOID +PcieLinkAspmEnable ( + IN PCI_ADDR DownstreamPort, + IN PCIE_ASPM_TYPE Aspm, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + PCIE_ASPM_DATA PcieAspmData; + PcieAspmData.Aspm = Aspm; + PcieAspmData.ScanData.StdHeader = StdHeader; + PcieAspmData.ScanData.GnbScanCallback = PcieAspmCallback; + GnbLibPciScan (DownstreamPort, DownstreamPort, &PcieAspmData.ScanData); +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Evaluate device + * + * + * + * @param[in] Device PCI Address + * @param[in,out] ScanData Scan configuration data + * @retval Scan Status of 0 + */ + +SCAN_STATUS +PcieAspmCallback ( + IN PCI_ADDR Device, + IN OUT GNB_PCI_SCAN_DATA *ScanData + ) +{ + SCAN_STATUS ScanStatus; + PCIE_ASPM_DATA *PcieAspmData; + PCIE_DEVICE_TYPE DeviceType; + ScanStatus = SCAN_SUCCESS; + IDS_HDT_CONSOLE (GNB_TRACE, " PcieAspmCallback for Device = %d:%d:%d\n", + Device.Address.Bus, + Device.Address.Device, + Device.Address.Function + ); + PcieAspmData = (PCIE_ASPM_DATA *) ScanData; + ScanStatus = SCAN_SUCCESS; + DeviceType = GnbLibGetPcieDeviceType (Device, ScanData->StdHeader); + switch (DeviceType) { + case PcieDeviceRootComplex: + case PcieDeviceDownstreamPort: + PcieAspmData->DownstreamPort = Device; + //PcieExitLatencyData->LinkCount++; + GnbLibPciRMW (Device.AddressValue | 0x18, AccessS3SaveWidth32, 0xffffffffull, 0x0, ScanData->StdHeader); + GnbLibPciScanSecondaryBus (Device, &PcieAspmData->ScanData); + //PcieExitLatencyData->LinkCount--; + break; + case PcieDeviceUpstreamPort: + PcieAspmEnableOnLink ( + PcieAspmData->DownstreamPort, + Device, + PcieAspmData->Aspm, + ScanData->StdHeader + ); + GnbLibPciRMW (Device.AddressValue | 0x18, AccessS3SaveWidth32, 0xffffffffull, 0x0, ScanData->StdHeader); + GnbLibPciScanSecondaryBus (Device, &PcieAspmData->ScanData); + ScanStatus = SCAN_SKIP_FUNCTIONS | SCAN_SKIP_DEVICES | SCAN_SKIP_BUSES; + break; + case PcieDeviceEndPoint: + case PcieDeviceLegacyEndPoint: + PcieAspmEnableOnLink ( + PcieAspmData->DownstreamPort, + Device, + PcieAspmData->Aspm, + ScanData->StdHeader + ); + ScanStatus = SCAN_SKIP_FUNCTIONS | SCAN_SKIP_DEVICES | SCAN_SKIP_BUSES; + break; + default: + break; + } + return ScanStatus; +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Set ASMP State on PCIe device function + * + * + * + * @param[in] Function PCI address of function. + * @param[in] Aspm Aspm capability to enable + * @param[in] StdHeader Standard configuration header + * + */ + /*----------------------------------------------------------------------------------------*/ +VOID +PcieAspmEnableOnFunction ( + IN PCI_ADDR Function, + IN PCIE_ASPM_TYPE Aspm, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 PcieCapPtr; + PcieCapPtr = GnbLibFindPciCapability (Function.AddressValue, PCIE_CAP_ID, StdHeader); + if (PcieCapPtr != 0) { + GnbLibPciRMW ( + Function.AddressValue | (PcieCapPtr + PCIE_LINK_CTRL_REGISTER) , + AccessS3SaveWidth8, + ~(BIT0 & BIT1), + Aspm, + StdHeader + ); + } +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Set ASMP State on all function of PCI device + * + * + * + * @param[in] Device PCI address of device. + * @param[in] Aspm Aspm capability to enable + * @param[in] StdHeader Standard configuration header + * + */ + /*----------------------------------------------------------------------------------------*/ +VOID +PcieAspmEnableOnDevice ( + IN PCI_ADDR Device, + IN PCIE_ASPM_TYPE Aspm, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 MaxFunc; + UINT8 CurrentFunc; + MaxFunc = GnbLibPciIsMultiFunctionDevice (Device.AddressValue, StdHeader) ? 7 : 0; + for (CurrentFunc = 0; CurrentFunc <= MaxFunc; CurrentFunc++) { + Device.Address.Function = CurrentFunc; + if (GnbLibPciIsDevicePresent (Device.AddressValue, StdHeader)) { + PcieAspmEnableOnFunction (Device, Aspm, StdHeader); + } + } +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Enable ASPM on link + * + * + * + * @param[in] Downstream PCI Address of downstrteam port + * @param[in] Upstream PCI Address of upstream port + * @param[in] Aspm Aspm capability to enable + * @param[in] StdHeader Standard configuration header + */ + +VOID +PcieAspmEnableOnLink ( + IN PCI_ADDR Downstream, + IN PCI_ADDR Upstream, + IN PCIE_ASPM_TYPE Aspm, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + PCIe_LINK_ASPM LinkAsmp; + PCIE_ASPM_TYPE DownstreamCap; + PCIE_ASPM_TYPE UpstreamCap; + LinkAsmp.DownstreamPort = Downstream; + DownstreamCap = PcieAspmGetPmCapability (Downstream, StdHeader); + LinkAsmp.UpstreamPort = Upstream; + UpstreamCap = PcieAspmGetPmCapability (Upstream, StdHeader); + LinkAsmp.DownstreamAspm = DownstreamCap & UpstreamCap & Aspm & AspmL1; + LinkAsmp.UpstreamAspm = LinkAsmp.DownstreamAspm; + LinkAsmp.RequestedAspm = Aspm; + if ((UpstreamCap & Aspm & AspmL0s) != 0) { + LinkAsmp.UpstreamAspm |= AspmL0s; + } + if ((DownstreamCap & Aspm & AspmL0s) != 0) { + LinkAsmp.DownstreamAspm |= AspmL0s; + } + if (GnbBuildOptions.PcieAspmBlackListEnable == 1) { + PcieAspmBlackListFeature (&LinkAsmp, StdHeader); + } + //AgesaPcieLinkAspm (&LinkAsmp, StdHeader); + IDS_HDT_CONSOLE (GNB_TRACE, " Set ASPM [%d] for Device = %d:%d:%d\n", + (LinkAsmp.UpstreamAspm) , + LinkAsmp.UpstreamPort.Address.Bus, + LinkAsmp.UpstreamPort.Address.Device, + LinkAsmp.UpstreamPort.Address.Function + ); + IDS_HDT_CONSOLE (GNB_TRACE, " Set ASPM [%d] for Device = %d:%d:%d\n", + (LinkAsmp.DownstreamAspm) , + LinkAsmp.DownstreamPort.Address.Bus, + LinkAsmp.DownstreamPort.Address.Device, + LinkAsmp.DownstreamPort.Address.Function + ); + PcieAspmEnableOnDevice (Upstream, LinkAsmp.UpstreamAspm, StdHeader); + PcieAspmEnableOnFunction (Downstream, LinkAsmp.DownstreamAspm, StdHeader); +} + + + +/**----------------------------------------------------------------------------------------*/ +/** + * Port/Endpoint ASMP capability + * + * + * + * @param[in] Device PCI address of downstream port + * @param[in] StdHeader Standard configuration header + * + * @retval PCIE_ASPM_TYPE + */ + /*----------------------------------------------------------------------------------------*/ +PCIE_ASPM_TYPE +PcieAspmGetPmCapability ( + IN PCI_ADDR Device, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 PcieCapPtr; + UINT32 Value; + PcieCapPtr = GnbLibFindPciCapability (Device.AddressValue, PCIE_CAP_ID, StdHeader); + if (PcieCapPtr == 0) { + return 0; + } + GnbLibPciRead ( + Device.AddressValue | (PcieCapPtr + PCIE_LINK_CAP_REGISTER), + AccessWidth32, + &Value, + StdHeader + ); + return (Value >> 10) & 3; +} |