diff options
Diffstat (limited to 'src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbCommonLib/GnbLibPci.c')
| -rw-r--r-- | src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbCommonLib/GnbLibPci.c | 405 |
1 files changed, 405 insertions, 0 deletions
diff --git a/src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbCommonLib/GnbLibPci.c b/src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbCommonLib/GnbLibPci.c new file mode 100644 index 0000000000..8c02a9b569 --- /dev/null +++ b/src/vendorcode/amd/agesa/f14/Proc/GNB/Modules/GnbCommonLib/GnbLibPci.c @@ -0,0 +1,405 @@ +/* $NoKeywords:$ */ +/** + * @file + * + * Various PCI service routines. + * + * + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: AGESA + * @e sub-project: GNB + * @e \$Revision: 34897 $ @e \$Date: 2010-07-13 19:07:10 -0700 (Tue, 13 Jul 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. + * + * *************************************************************************** + * + */ + + +#include "Porting.h" +#include "AMD.h" +#include "GnbLibPciAcc.h" +#include "GnbLibPci.h" +#include "GnbLibPci.h" +#include "amdlib.h" +#include "GnbLib.h" +#include "Filecode.h" +#define FILECODE PROC_GNB_MODULES_GNBCOMMONLIB_GNBLIBPCI_FILECODE + +/*----------------------------------------------------------------------------------------*/ +/* + * Check if device present + * + * + * + * @param[in] Address PCI address (as described in PCI_ADDR) + * @param[in] StdHeader Standard configuration header + * @retval TRUE Device is present + * @retval FALSE Device is not present + */ + +BOOLEAN +GnbLibPciIsDevicePresent ( + IN UINT32 Address, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT32 DeviceId; + GnbLibPciRead (Address, AccessWidth32, &DeviceId, StdHeader); + if (DeviceId == 0xffffffff) { + return FALSE; + } else { + return TRUE; + } +} + + +/*----------------------------------------------------------------------------------------*/ +/* + * Check if device is bridge + * + * + * + * @param[in] Address PCI address (as described in PCI_ADDR) + * @param[in] StdHeader Standard configuration header + * @retval TRUE Device is a bridge + * @retval FALSE Device is not a bridge + */ + +BOOLEAN +GnbLibPciIsBridgeDevice ( + IN UINT32 Address, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 Header; + GnbLibPciRead (Address | 0xe, AccessWidth8, &Header, StdHeader); + if ((Header & 0x7f) == 1) { + return TRUE; + } else { + return FALSE; + } +} + +/*----------------------------------------------------------------------------------------*/ +/* + * Check if device is multifunction + * + * + * + * @param[in] Address PCI address (as described in PCI_ADDR) + * @param[in] StdHeader Standard configuration header + * @retval TRUE Device is a multifunction device. + * @retval FALSE Device is a single function device. + * + */ +BOOLEAN +GnbLibPciIsMultiFunctionDevice ( + IN UINT32 Address, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 Header; + GnbLibPciRead (Address | 0xe, AccessWidth8, &Header, StdHeader); + if ((Header & 0x80) != 0) { + return TRUE; + } else { + return FALSE; + } +} + +/*----------------------------------------------------------------------------------------*/ +/* + * Check if device is PCIe device + * + * + * + * @param[in] Address PCI address (as described in PCI_ADDR) + * @param[in] StdHeader Standard configuration header + * @retval TRUE Device is a PCIe device + * @retval FALSE Device is not a PCIe device + * + */ + +BOOLEAN +GnbLibPciIsPcieDevice ( + IN UINT32 Address, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + if (GnbLibFindPciCapability (Address, 0x10, StdHeader) != 0 ) { + return TRUE; + } else { + return FALSE; + } +} + + +/*----------------------------------------------------------------------------------------*/ +/* + * Find PCI capability pointer + * + * + * + * @param[in] Address PCI address (as described in PCI_ADDR) + * @param[in] CapabilityId PCI capability ID + * @param[in] StdHeader Standard configuration header + * @retval Register address of capability pointer + * + */ + +UINT8 +GnbLibFindPciCapability ( + IN UINT32 Address, + IN UINT8 CapabilityId, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 CapabilityPtr; + UINT8 CurrentCapabilityId; + CapabilityPtr = 0x34; + if (!GnbLibPciIsDevicePresent (Address, StdHeader)) { + return 0; + } + while (CapabilityPtr != 0) { + GnbLibPciRead (Address | CapabilityPtr, AccessWidth8 , &CapabilityPtr, StdHeader); + if (CapabilityPtr != 0) { + GnbLibPciRead (Address | CapabilityPtr , AccessWidth8 , &CurrentCapabilityId, StdHeader); + if (CurrentCapabilityId == CapabilityId) { + break; + } + CapabilityPtr++; + } + } + return CapabilityPtr; +} +/*----------------------------------------------------------------------------------------*/ +/* + * Find PCIe extended capability pointer + * + * + * + * @param[in] Address PCI address (as described in PCI_ADDR) + * @param[in] ExtendedCapabilityId Extended PCIe capability ID + * @param[in] StdHeader Standard configuration header + * @retval Register address of extended capability pointer + * + */ + + +UINT16 +GnbLibFindPcieExtendedCapability ( + IN UINT32 Address, + IN UINT16 ExtendedCapabilityId, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT16 CapabilityPtr; + UINT32 ExtendedCapabilityIdBlock; + if (GnbLibPciIsPcieDevice (Address, StdHeader)) { + GnbLibPciRead (Address | 0x100 , AccessWidth32 , &ExtendedCapabilityIdBlock, StdHeader); + if ((ExtendedCapabilityIdBlock != 0) && ((UINT16)ExtendedCapabilityIdBlock != 0xffff)) { + do { + CapabilityPtr = (UINT16) ((ExtendedCapabilityIdBlock >> 20) & 0xfff); + if ((UINT16)ExtendedCapabilityIdBlock == ExtendedCapabilityId) { + return CapabilityPtr; + } + GnbLibPciRead (Address | CapabilityPtr , AccessWidth32 , &ExtendedCapabilityIdBlock, StdHeader); + } while (((ExtendedCapabilityIdBlock >> 20) & 0xfff) != 0); + } + } + return 0; +} + +/*----------------------------------------------------------------------------------------*/ +/* + * Scan range of device on PCI bus. + * + * + * + * @param[in] Start Start address to start scan from + * @param[in] End End address of scan + * @param[in] ScanData Supporting data + * + */ +/*----------------------------------------------------------------------------------------*/ +VOID +GnbLibPciScan ( + IN PCI_ADDR Start, + IN PCI_ADDR End, + IN GNB_PCI_SCAN_DATA *ScanData + ) +{ + UINTN Bus; + UINTN Device; + UINTN LastDevice; + UINTN Function; + UINTN LastFunction; + PCI_ADDR PciDevice; + SCAN_STATUS Status; + + for (Bus = Start.Address.Bus; Bus <= End.Address.Bus; Bus++) { + Device = (Bus == Start.Address.Bus) ? Start.Address.Device : 0x00; + LastDevice = (Bus == End.Address.Bus) ? End.Address.Device : 0x1F; + for ( ; Device <= LastDevice; Device++) { + if ((Bus == Start.Address.Bus) && (Device == Start.Address.Device)) { + Function = Start.Address.Function; + } else { + Function = 0x0; + } + PciDevice.AddressValue = MAKE_SBDFO (0, Bus, Device, Function, 0); + if (!GnbLibPciIsDevicePresent (PciDevice.AddressValue, ScanData->StdHeader)) { + continue; + } + if (GnbLibPciIsMultiFunctionDevice (PciDevice.AddressValue, ScanData->StdHeader)) { + if ((Bus == End.Address.Bus) && (Device == End.Address.Device)) { + LastFunction = Start.Address.Function; + } else { + LastFunction = 0x7; + } + } else { + LastFunction = 0x0; + } + for ( ; Function <= LastFunction; Function++) { + PciDevice.AddressValue = MAKE_SBDFO (0, Bus, Device, Function, 0); + if (GnbLibPciIsDevicePresent (PciDevice.AddressValue, ScanData->StdHeader)) { + Status = ScanData->GnbScanCallback (PciDevice, ScanData); + if ((Status & SCAN_SKIP_FUNCTIONS) != 0) { + Function = LastFunction + 1; + } + if ((Status & SCAN_SKIP_DEVICES) != 0) { + Device = LastDevice + 1; + } + if ((Status & SCAN_SKIP_BUSES) != 0) { + Bus = End.Address.Bus + 1; + } + } + } + } + } +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Scan all subordinate buses + * + * + * @param[in] Bridge PCI bridge address + * @param[in,out] ScanData Scan configuration data + * + */ +VOID +GnbLibPciScanSecondaryBus ( + IN PCI_ADDR Bridge, + IN OUT GNB_PCI_SCAN_DATA *ScanData + ) +{ + PCI_ADDR StartRange; + PCI_ADDR EndRange; + UINT8 SecondaryBus; + GnbLibPciRead (Bridge.AddressValue | 0x19, AccessWidth8, &SecondaryBus, ScanData->StdHeader); + if (SecondaryBus != 0) { + StartRange.AddressValue = MAKE_SBDFO (0, SecondaryBus, 0, 0, 0); + EndRange.AddressValue = MAKE_SBDFO (0, SecondaryBus, 0x1f, 0x7, 0); + GnbLibPciScan (StartRange, EndRange, ScanData); + } +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Get PCIe device type + * + * + * + * @param[in] Device PCI address of device. + * @param[in] StdHeader Northbridge configuration structure pointer. + * + * @retval PCIE_DEVICE_TYPE + */ + /*----------------------------------------------------------------------------------------*/ + +PCIE_DEVICE_TYPE +GnbLibGetPcieDeviceType ( + IN PCI_ADDR Device, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT8 PcieCapPtr; + UINT8 Value; + + PcieCapPtr = GnbLibFindPciCapability (Device.AddressValue, PCIE_CAP_ID, StdHeader); + if (PcieCapPtr != 0) { + GnbLibPciRead (Device.AddressValue | (PcieCapPtr + 0x2) , AccessWidth8, &Value, StdHeader); + return Value >> 4; + } + return PcieNotPcieDevice; +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Save config space area + * + * + * + * @param[in] Address PCI address of device. + * @param[in] StartRegisterAddress Start register address. + * @param[in] EndRegisterAddress End register address. + * @param[in] Width Acess width. + * @param[in] StdHeader Standard header. + * + */ + /*----------------------------------------------------------------------------------------*/ + +VOID +GnbLibS3SaveConfigSpace ( + IN UINT32 Address, + IN UINT16 StartRegisterAddress, + IN UINT16 EndRegisterAddress, + IN ACCESS_WIDTH Width, + IN AMD_CONFIG_PARAMS *StdHeader + ) +{ + UINT16 Index; + UINT16 Delta; + UINT16 Length; + Length = (StartRegisterAddress < EndRegisterAddress) ? (EndRegisterAddress - StartRegisterAddress) : (StartRegisterAddress - EndRegisterAddress); + Delta = LibAmdAccessWidth (Width); + for (Index = 0; Index <= Length; Index = Index + Delta) { + GnbLibPciRMW ( + Address | ((StartRegisterAddress < EndRegisterAddress) ? (StartRegisterAddress + Index) : (StartRegisterAddress - Index)), + Width, + 0xffffffff, + 0x0, + StdHeader + ); + } +} |