| /* $NoKeywords:$ */ |
| /** |
| * @file |
| * |
| * Config Fch Gpp controller |
| * |
| * Init Gpp Controller features. |
| * |
| * @xrefitem bom "File Content Label" "Release Content" |
| * @e project: AGESA |
| * @e sub-project: FCH |
| * @e \$Revision: 49456 $ @e \$Date: 2011-03-24 04:13:38 +0800 (Thu, 24 Mar 2011) $ |
| * |
| */ |
| /* |
| ***************************************************************************** |
| * |
| * 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. |
| **************************************************************************** |
| */ |
| #include "FchPlatform.h" |
| #include "Filecode.h" |
| #define FILECODE PROC_FCH_PCIE_GPPLATE_FILECODE |
| // |
| // Declaration of local functions |
| // |
| VOID FchGppSetAspm (IN UINT32 PciAddress, IN UINT8 LxState, IN AMD_CONFIG_PARAMS *StdHeader); |
| VOID FchGppSetEpAspm (IN UINT32 PciAddress, IN UINT8 LxState, IN AMD_CONFIG_PARAMS *StdHeader); |
| VOID FchGppValidateAspm (IN UINT32 PciAddress, IN UINT8 *LxState, IN AMD_CONFIG_PARAMS *StdHeader); |
| UINT8 FchFindPciCap (IN UINT32 PciAddress, IN UINT8 TargetCapId, IN AMD_CONFIG_PARAMS *StdHeader); |
| |
| // |
| //----------------------------------------------------------------------------------- |
| // GPP initialization sequence: |
| // |
| // 1) Set port enable bit fields by current GPP link configuration mode |
| // 2) Deassert GPP reset and pull EP out of reset - Clear GPP_RESET (abcfg:0xC0[8] = 0) |
| // 3) Loop polling for the link status of all ports |
| // 4) Misc operations after link training: |
| // - (optional) Detect GFX device |
| // - Hide empty GPP configuration spaces (Disable empty GPP ports) |
| // - (optional) Power down unused GPP ports |
| // - (optional) Configure PCIE_P2P_Int_Map (abcfg:0xC4[7:0]) |
| // 5) GPP init completed |
| // |
| // |
| // *) Gen2 vs Gen1 |
| // Gen2 mode Gen1 mode |
| // --------------------------------------------------------------- |
| // STRAP_PHY_PLL_CLKF[6:0] 7'h32 7'h19 |
| // STRAP_BIF_GEN2_EN 1 0 |
| // |
| // PCIE_PHY_PLL clock locks @ 5GHz |
| // |
| // |
| |
| |
| /** |
| * FchInitLateGpp - Prepare Gpp controller to boot to OS. |
| * |
| * PcieGppLateInit |
| * |
| * @param[in] FchDataPtr Fch configuration structure pointer. |
| * |
| */ |
| VOID |
| FchInitLateGpp ( |
| IN VOID *FchDataPtr |
| ) |
| { |
| UINT8 PortId; |
| UINT8 BusNum; |
| UINT8 AspmValue; |
| UINT8 PortAspmValue; |
| UINT8 AllowStrapControlByAB; |
| UINT8 FchGppPhyPllPowerDown; |
| FCH_GPP_PORT_CONFIG *PortCfg; |
| UINT32 PciAspmValue; |
| UINT32 AbValue; |
| FCH_DATA_BLOCK *LocalCfgPtr; |
| AMD_CONFIG_PARAMS *StdHeader; |
| |
| LocalCfgPtr = (FCH_DATA_BLOCK *) FchDataPtr; |
| StdHeader = LocalCfgPtr->StdHeader; |
| |
| // |
| // Disable hidden register decode and serial number capability |
| // |
| AbValue = ReadAlink (FCH_ABCFG_REG330 | (UINT32) (ABCFG << 29), StdHeader); |
| WriteAlink (FCH_ABCFG_REG330 | (UINT32) (ABCFG << 29), AbValue & ~(BIT26 + BIT10), StdHeader); |
| |
| if (ReadAlink (FCH_ABCFG_REGC0 | (UINT32) (ABCFG << 29), StdHeader) & BIT8) { |
| return; |
| } |
| |
| // |
| // Configure ASPM |
| // |
| AspmValue = (UINT8)LocalCfgPtr->Gpp.GppPortAspm; |
| FchGppPhyPllPowerDown = (UINT8) LocalCfgPtr->Gpp.GppPhyPllPowerDown; |
| |
| AllowStrapControlByAB = 0x01; |
| |
| for ( PortId = 0; PortId < MAX_GPP_PORTS; PortId++ ) { |
| // |
| // write pci_reg3d with 0x01 to fix yellow mark for GPP bridge under some OS |
| // when native PCIE is enabled but MSI is not available |
| // BIF/GPP allowing strap STRAP_BIF_INTERRUPT_PIN_SB controlled by AB reg |
| // |
| PortCfg = &LocalCfgPtr->Gpp.PortCfg[PortId]; |
| if (PortCfg->PortHotPlug) { |
| RwPci (PCI_ADDRESS (0, 21, PortId, 0x04), AccessWidth8, 0xFE, 0x00, StdHeader); ///clear IO enable to fix possible hotplug hang |
| } |
| |
| WritePci (PCI_ADDRESS (0, 21, PortId, 0x3d), AccessWidth8, &AllowStrapControlByAB, StdHeader); |
| ReadPci (PCI_ADDRESS (0, 21, PortId, 0x19), AccessWidth8, &BusNum, StdHeader); |
| |
| if (BusNum != 0xFF) { |
| ReadPci (PCI_ADDRESS (BusNum, 0, 0, 0x00), AccessWidth32, &PciAspmValue, StdHeader); |
| if (PciAspmValue != 0xffffffff) { |
| PortAspmValue = AspmValue; |
| // |
| // Validate ASPM support on EP side |
| // |
| FchGppValidateAspm (PCI_ADDRESS (BusNum, 0, 0, 0), &PortAspmValue, StdHeader); |
| // |
| // Set ASPM on EP side |
| // |
| FchGppSetEpAspm (PCI_ADDRESS (BusNum, 0, 0, 0), PortAspmValue, StdHeader); |
| // |
| // Set ASPM on port side |
| // |
| FchGppSetAspm (PCI_ADDRESS (0, 21, PortId, 0), PortAspmValue, StdHeader); |
| } |
| } |
| RwAlink ((FCH_RCINDXP_REG02 | (UINT32) (RCINDXP << 29) | (PortId << 24) ), ~(BIT15), (BIT15), StdHeader); |
| } |
| RwAlink ((FCH_RCINDXC_REG02 | (UINT32) (RCINDXC << 29)), ~(BIT0), (BIT0), StdHeader); |
| |
| // |
| // Configure Lock HWInit registers |
| // |
| AbValue = ReadAlink (FCH_ABCFG_REGC0 | (UINT32) (ABCFG << 29), StdHeader); |
| if (AbValue & 0xF0) { |
| AbValue = ReadAlink (FCH_RCINDXC_REG10 | (UINT32) (RCINDXC << 29), StdHeader); |
| WriteAlink (FCH_RCINDXC_REG10 | (UINT32) (RCINDXC << 29), AbValue | BIT0, StdHeader); /// Set HWINIT_WR_LOCK |
| |
| if ( FchGppPhyPllPowerDown == TRUE ) { |
| // |
| // Power Saving Feature for GPP Lanes |
| // |
| // Set PCIE_P_CNTL in Alink PCIEIND space |
| // |
| AbValue = ReadAlink (RC_INDXC_REG40 | (UINT32) (RCINDXC << 29), StdHeader); |
| AbValue |= BIT12 + BIT3 + BIT0; |
| AbValue &= ~(BIT9 + BIT4); |
| WriteAlink (RC_INDXC_REG40 | (UINT32) (RCINDXC << 29), AbValue, StdHeader); |
| RwAlink (FCH_RCINDXC_REG02, ~(BIT8), (BIT8), StdHeader); |
| RwAlink (FCH_RCINDXC_REG02, ~(BIT3), (BIT3), StdHeader); |
| } |
| } |
| |
| // |
| // Restore strap0 via override |
| // |
| if (LocalCfgPtr->Gpp.PcieAer) { |
| RwAlink (FCH_ABCFG_REG310 | (UINT32) (ABCFG << 29), 0xFFFFFFFF, BIT7, StdHeader); |
| RwAlink (RC_INDXC_REGC0, 0xFFFFFFFF, BIT9, StdHeader); |
| } |
| } |
| |
| /** |
| * FchGppSetAspm - Set GPP ASPM |
| * |
| * |
| * @param[in] PciAddress PCI Address. |
| * @param[in] LxState Lane State. |
| * @param[in] StdHeader |
| * |
| */ |
| VOID |
| FchGppSetAspm ( |
| IN UINT32 PciAddress, |
| IN UINT8 LxState, |
| IN AMD_CONFIG_PARAMS *StdHeader |
| ) |
| { |
| UINT8 PcieCapOffset; |
| UINT8 DeviceType; |
| |
| PcieCapOffset = FchFindPciCap (PciAddress, PCIE_CAP_ID, StdHeader); |
| |
| if (PcieCapOffset) { |
| // |
| // Read link capabilities register (0x0C[11:10] - ASPM support) |
| // |
| ReadPci (PciAddress + PcieCapOffset + 0x0D, AccessWidth8, &DeviceType, StdHeader); |
| if (DeviceType & BIT2) { |
| DeviceType = (DeviceType >> 2) & (BIT1 + BIT0); |
| // |
| // Set ASPM state in link control register |
| // |
| RwPci (PciAddress + PcieCapOffset + 0x10, AccessWidth8, 0xffffffff, LxState & DeviceType, StdHeader); |
| } |
| } |
| } |
| |
| /** |
| * FchGppSetEpAspm - Set EP ASPM |
| * |
| * |
| * @param[in] PciAddress PCI Address. |
| * @param[in] LxState Lane State. |
| * @param[in] StdHeader |
| * |
| */ |
| VOID |
| FchGppSetEpAspm ( |
| IN UINT32 PciAddress, |
| IN UINT8 LxState, |
| IN AMD_CONFIG_PARAMS *StdHeader |
| ) |
| { |
| UINT8 DeviceType; |
| UINT8 MaxFuncs; |
| UINT32 DevBDF; |
| |
| MaxFuncs = 1; |
| ReadPci (PciAddress + 0x0E, AccessWidth8, &DeviceType, StdHeader); |
| |
| if (DeviceType & BIT7) { |
| MaxFuncs = 8; /// multi-function device |
| } |
| |
| while (MaxFuncs != 0) { |
| DevBDF = PciAddress + (UINT32) ((MaxFuncs - 1) << 16); |
| FchGppSetAspm (DevBDF, LxState, StdHeader); |
| MaxFuncs--; |
| } |
| } |
| |
| /** |
| * FchGppValidateAspm - Validate EndPoint support for GPP ASPM |
| * |
| * |
| * @param[in] PciAddress PCI Address. |
| * @param[in] LxState Lane State. |
| * @param[in] StdHeader |
| * |
| */ |
| VOID |
| FchGppValidateAspm ( |
| IN UINT32 PciAddress, |
| IN UINT8 *LxState, |
| IN AMD_CONFIG_PARAMS *StdHeader |
| ) |
| { |
| UINT8 PcieCapOffset; |
| UINT8 DeviceType; |
| UINT8 MaxFuncs; |
| UINT32 DevBDF; |
| |
| MaxFuncs = 1; |
| ReadPci (PciAddress + 0x0E, AccessWidth8, &DeviceType, StdHeader); |
| |
| if (DeviceType & BIT7) { |
| MaxFuncs = 8; /// multi-function device |
| } |
| |
| while (MaxFuncs != 0) { |
| DevBDF = PciAddress + (UINT32) ((MaxFuncs - 1) << 16); |
| PcieCapOffset = FchFindPciCap (DevBDF, PCIE_CAP_ID, StdHeader); |
| |
| if (PcieCapOffset) { |
| // |
| // Read link capabilities register (0x0C[11:10] - ASPM support) |
| // |
| ReadPci (DevBDF + PcieCapOffset + 0x0D, AccessWidth8, &DeviceType, StdHeader); |
| if (DeviceType & BIT2) { |
| DeviceType = (DeviceType >> 2) & (BIT1 + BIT0); |
| // |
| // Update ASPM state as what endpoint support |
| // |
| *LxState &= DeviceType; |
| } |
| } |
| MaxFuncs--; |
| } |
| } |
| |
| /** |
| * FchFindPciCap - Find PCI Cap |
| * |
| * |
| * @param[in] PciAddress PCI Address. |
| * @param[in] TargetCapId Target Cap ID. |
| * @param[in] StdHeader |
| * |
| */ |
| UINT8 |
| FchFindPciCap ( |
| IN UINT32 PciAddress, |
| IN UINT8 TargetCapId, |
| IN AMD_CONFIG_PARAMS *StdHeader |
| ) |
| { |
| UINT8 NextCapPtr; |
| UINT8 CapId; |
| |
| NextCapPtr = 0x34; |
| while (NextCapPtr != 0) { |
| ReadPci (PciAddress + NextCapPtr, AccessWidth8, &NextCapPtr, StdHeader); |
| |
| if (NextCapPtr == 0xff) { |
| return 0; |
| } |
| |
| if (NextCapPtr != 0) { |
| ReadPci (PciAddress + NextCapPtr, AccessWidth8, &CapId, StdHeader); |
| if (CapId == TargetCapId) { |
| break; |
| } else { |
| NextCapPtr++; |
| } |
| } |
| } |
| return NextCapPtr; |
| } |