| /** |
| * @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; |
| } |