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Diffstat (limited to 'src/vendorcode/amd/cimx/rd890/amdAcpiIvrs.c')
| -rw-r--r-- | src/vendorcode/amd/cimx/rd890/amdAcpiIvrs.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/vendorcode/amd/cimx/rd890/amdAcpiIvrs.c b/src/vendorcode/amd/cimx/rd890/amdAcpiIvrs.c new file mode 100644 index 0000000000..c710bf06fe --- /dev/null +++ b/src/vendorcode/amd/cimx/rd890/amdAcpiIvrs.c @@ -0,0 +1,236 @@ +/** + * @file + * + * ACPI common library + * + * + * + * @xrefitem bom "File Content Label" "Release Content" + * @e project: Common Library + * @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 "AGESA.h" +#include "amdAcpiLib.h" +#include "amdAcpiIvrs.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 + *---------------------------------------------------------------------------------------- + */ + + +/*---------------------------------------------------------------------------------------- + * E X P O R T E D F U N C T I O N S + *---------------------------------------------------------------------------------------- + */ + + + +/*----------------------------------------------------------------------------------------*/ +/** + * Get first block entry in an IVRS (IOMMU) table + * + * + * + * @param[in] IoVirtualizationEntryType Type of IVHD or IVMD entry (IVHD = 0x10, IVMD = 0x20-0x22, any = 0xFF)) + * @param[in] Pointer to IVRS ACPI table + * + */ +VOID* +LibAmdGetFirstIvrsBlockEntry ( + IN UINT8 IoVirtualizationEntryType, + IN VOID *IvrsPtr + ) +{ + // Start at IVRS pointer + 48 (48 is always the size of IVRS header) + UINT8* BlockPtr; + // If our pointer is not to an IVRS, return error + +// if (((DESCRIPTION_HEADER*)IvrsPtr)->Signature != 'SRVI') return NULL; + if (((DESCRIPTION_HEADER*)IvrsPtr)->Signature != Int32FromChar ('S', 'R', 'V', 'I')) return NULL; + BlockPtr = (UINT8*)IvrsPtr + 48; + // Search each entry incrementing by it's size field in offset 2 until + // we reach the end of the IVRS + do { + if (*BlockPtr == IoVirtualizationEntryType) { + return BlockPtr; + } + BlockPtr += *((UINT16*) (BlockPtr + 2)); + } while (BlockPtr < (UINT8*)IvrsPtr + ((DESCRIPTION_HEADER*)IvrsPtr)->Length); + return NULL; +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Get next block entry in an IVRS (IOMMU) table + * + * + * + * @param[in] IoVirtualizationEntryType Type of IVHD or IVMD entry (IVHD = 0x10, IVMD = 0x20-0x22, any = 0xFF)) + * @param[in] CurrentStructurePtr Pointer to current IVHD or IVMD block in IVRS + * @param[in] IvrsPtr Pointer to IVRS table + * + */ + +VOID* +LibAmdGetNextIvrsBlockEntry ( + IN UINT8 IoVirtualizationEntryType, + IN VOID* CurrentStructurePtr, + IN VOID* IvrsPtr + ) +{ + // Start at the current device entry + // Start searching after the current entry + UINT8* BlockPtr; + // If our pointer is not to an IVRS, return error +// if (((DESCRIPTION_HEADER*)IvrsPtr)->Signature != 'SRVI') return NULL; + if (((DESCRIPTION_HEADER*)IvrsPtr)->Signature != Int32FromChar ('S', 'R', 'V', 'I')) return NULL; + + BlockPtr = (UINT8*)CurrentStructurePtr + *((UINT16*) ((UINT8*)CurrentStructurePtr + 2)); + + // Search each entry incrementing by it's size field in offset 2 until + // we reach the end of the IVRS + while (BlockPtr < ((UINT8*)IvrsPtr + ((DESCRIPTION_HEADER*)IvrsPtr)->Length)) { + if (*BlockPtr == IoVirtualizationEntryType) { + return BlockPtr; + } + BlockPtr += *((UINT16*) (BlockPtr + 2)); + } + return NULL; +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Get pointer to first Device Entry of an IVHD + * + * + * + * @param[in] IoVirtualizationEntryType Type of IVHD device entry to search for. (0xFF returns next entry of any type) + * Typical values: 4 byte entries (0-63), 8 byte entries (64-127) + * @param[in] IvhdBlockPtr Pointer to current IVHD block + * + */ +VOID* +LibAmdGetFirstDeviceEntry ( + IN UINT8 DeviceEntryType, + IN VOID* IvhdBlockPtr + ) +{ + // Start at IVHD pointer + 24 (24 is always the size of IVHD header) + // Not much we can do do validate an IVHD input, the only field we know for sure is the type + UINT8 *EntryPtr; + UINT16 IvhdSize; + EntryPtr = (UINT8*)IvhdBlockPtr + 24; + IvhdSize = *(UINT16*) ((UINT8*)IvhdBlockPtr + 2); + // Search each entry incrementing by it's type field until the end of the IVHD + // Types 0-63 are 4 byte size, 64-127 are 8 byte size + do { + if (*EntryPtr == DeviceEntryType) { + return EntryPtr; + } + if (*EntryPtr < 64) { + EntryPtr += 4; + } else if ((*EntryPtr >= 64) && (*EntryPtr < 128)) { + EntryPtr += 8; + } else { + ASSERT (TRUE); + return NULL; + } + } while (EntryPtr < ((UINT8*)IvhdBlockPtr + IvhdSize)); + return NULL; +} + +/*----------------------------------------------------------------------------------------*/ +/** + * Get pointer to Next Device Entry of an IVHD + * + * + * + * + * @param[in] IoVirtualizationEntryType Type of IVHD entry. (0xFF returns next entry of any type) + * Typical values: 4 byte entries (0-63), 8 byte entries (64-127) + * @param[in] CurrentStructurePtr Pointer to current device entry in IVHD block + * @param[in] IvhdBlockPtr Pointer to current IVHD block + */ +VOID* +LibAmdGetNextDeviceEntry ( + IN UINT8 DeviceEntryType, + IN VOID* CurrentDeviceEntry, + IN VOID* IvhdBlockPtr + ) +{ + UINT8 *EntryPtr; + UINT16 IvhdSize; + // Start at IVHD pointer + 24 (24 is always the size of IVHD header) + // Not much we can do do validate an IVHD input, the only field we know for sure is the type + EntryPtr = CurrentDeviceEntry; + + if ((*EntryPtr != 0) && (*EntryPtr < 64)) { + EntryPtr += 4; + } else if ((*EntryPtr >= 64) && (*EntryPtr < 128)) { + EntryPtr += 8; + } + IvhdSize = *(UINT16*) ((UINT8*)IvhdBlockPtr + 2); + // Search each entry incrementing by it's type field until the end of the IVHD + // Types 0-63 are 4 byte size, 64-127 are 8 byte size + while (EntryPtr < ((UINT8*)IvhdBlockPtr + IvhdSize)) { + if (*EntryPtr == DeviceEntryType) { + return EntryPtr; + } + if (*EntryPtr < 64) { + EntryPtr += 4; + } else if ((*EntryPtr >= 64) && (*EntryPtr < 128)) { + EntryPtr += 8; + } else { + ASSERT (TRUE); + return NULL; + } + } + return NULL; +}
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