--- /dev/null
+/**
+ * @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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projects / coreboot.git / blobdiff