diff options
Diffstat (limited to 'ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Pcct/PcctParser.c')
| -rw-r--r-- | ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Pcct/PcctParser.c | 1346 |
1 files changed, 673 insertions, 673 deletions
diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Pcct/PcctParser.c b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Pcct/PcctParser.c index 8ad39090af..20757f902c 100644 --- a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Pcct/PcctParser.c +++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Pcct/PcctParser.c @@ -1,673 +1,673 @@ -/** @file
- PCCT table parser
-
- Copyright (c) 2021, Arm Limited.
- SPDX-License-Identifier: BSD-2-Clause-Patent
-
- @par Reference(s):
- - ACPI 6.4 Specification - January 2021
-**/
-
-#include <Library/BaseMemoryLib.h>
-#include <Library/PrintLib.h>
-#include <Library/UefiLib.h>
-#include "AcpiParser.h"
-#include "AcpiView.h"
-#include "AcpiViewConfig.h"
-#include "PcctParser.h"
-
-// Local variables
-STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
-
-STATIC UINT32 *PccGlobalFlags;
-STATIC UINT8 *PccSubspaceLength;
-STATIC UINT8 *PccSubspaceType;
-STATIC UINT8 *ExtendedPccSubspaceInterruptFlags;
-
-/**
- This function validates the length coded on 4 bytes of a shared memory range
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidateRangeLength4 (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- if (*(UINT32 *)Ptr < MIN_EXT_PCC_SUBSPACE_MEM_RANGE_LEN) {
- IncrementErrorCount ();
- Print (
- L"\nError: Shared memory range length is too short.\n"
- L"Length is %u when it should be greater than or equal to %u",
- *(UINT32 *)Ptr,
- MIN_EXT_PCC_SUBSPACE_MEM_RANGE_LEN
- );
- }
-}
-
-/**
- This function validates the length coded on 8 bytes of a shared memory range
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidateRangeLength8 (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- if (*(UINT64 *)Ptr <= MIN_MEMORY_RANGE_LENGTH) {
- IncrementErrorCount ();
- Print (
- L"\nError: Shared memory range length is too short.\n"
- L"Length is %u when it should be greater than %u",
- *(UINT64 *)Ptr,
- MIN_MEMORY_RANGE_LENGTH
- );
- }
-}
-
-/**
- This function validates address space for Memory/IO GAS.
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidatePccMemoryIoGas (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- switch (*(UINT8 *)Ptr) {
- #if !(defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64))
- case EFI_ACPI_6_4_SYSTEM_IO:
- #endif //if not (defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64))
- case EFI_ACPI_6_4_SYSTEM_MEMORY:
- return;
- default:
- IncrementErrorCount ();
- Print (L"\nError: Invalid address space");
- }
-}
-
-/**
- This function validates address space for structures of types other than 0.
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidatePccGas (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- switch (*(UINT8 *)Ptr) {
- #if !(defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64))
- case EFI_ACPI_6_4_SYSTEM_IO:
- #endif //if not (defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64))
- case EFI_ACPI_6_4_FUNCTIONAL_FIXED_HARDWARE:
- case EFI_ACPI_6_4_SYSTEM_MEMORY:
- return;
- default:
- IncrementErrorCount ();
- Print (L"\nError: Invalid address space");
- }
-}
-
-/**
- This function validates doorbell address space for type 4 structure.
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidatePccDoorbellGas (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- // For responder subspaces this field is optional, if not present the field
- // should just contain zeros.
- if (*PccSubspaceType == EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC) {
- if (IsZeroBuffer (
- Ptr,
- sizeof (EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE)
- ))
- {
- return;
- }
- }
-
- ValidatePccGas (Ptr, Context);
-}
-
-/**
- This function validates interrupt acknowledge address space for
- type 4 structure.
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidatePccIntAckGas (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- // If the subspace does not support interrupts or the interrupt is
- // edge driven the register may be omitted. A value of 0x0 on all
- // 12 bytes of the GAS structure indicates the register is not
- // present.
- if (((*PccGlobalFlags & EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT) !=
- EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT) ||
- ((*ExtendedPccSubspaceInterruptFlags &
- EFI_ACPI_6_4_PCCT_SUBSPACE_PLATFORM_INTERRUPT_FLAGS_MODE) ==
- EFI_ACPI_6_4_PCCT_SUBSPACE_PLATFORM_INTERRUPT_FLAGS_MODE))
- {
- if (IsZeroBuffer (
- Ptr,
- sizeof (EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE)
- ))
- {
- return;
- }
- }
-
- ValidatePccGas (Ptr, Context);
-}
-
-/**
- This function validates error status address space for type 4 structure.
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidatePccErrStatusGas (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- // This field is ignored by the OSPM on responder channels.
- if (*PccSubspaceType == EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC) {
- return;
- }
-
- ValidatePccGas (Ptr, Context);
-}
-
-/**
- This function validates platform interrupt flags for type 4 structure.
-
- @param [in] Ptr Pointer to the start of the field data.
- @param [in] Context Pointer to context specific information e.g. this
- could be a pointer to the ACPI table header.
-**/
-STATIC
-VOID
-EFIAPI
-ValidatePlatInterrupt (
- IN UINT8 *Ptr,
- IN VOID *Context
- )
-{
- // If a responder subspace is present in the PCCT, then the global Platform
- // Interrupt flag must be set to 1.
- if ((*PccSubspaceType == EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC) &&
- ((*PccGlobalFlags & EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT) !=
- EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT))
- {
- IncrementErrorCount ();
- Print (
- L"\nError: Global Platform interrupt flag must be set to 1" \
- L" if a PCC type 4 structure is present in PCCT."
- );
- }
-}
-
-/**
- An ACPI_PARSER array describing the ACPI PCCT Table.
-*/
-STATIC CONST ACPI_PARSER PcctParser[] = {
- PARSE_ACPI_HEADER (&AcpiHdrInfo),
- { L"Flags", 4, 36, NULL, NULL, (VOID **)&PccGlobalFlags, NULL, NULL },
- { L"Reserved", 8, 40, NULL, NULL, NULL, NULL, NULL }
-};
-
-/**
- An ACPI_PARSER array describing the platform communications channel subspace
- structure header.
-*/
-STATIC CONST ACPI_PARSER PccSubspaceHeaderParser[] = {
- PCC_SUBSPACE_HEADER ()
- // ... Type Specific Fields ...
-};
-
-/**
- An ACPI_PARSER array describing the Generic Communications Subspace - Type 0
-*/
-STATIC CONST ACPI_PARSER PccSubspaceType0Parser[] = {
- PCC_SUBSPACE_HEADER (),
- { L"Reserved", 6, 2, L"%x %x %x %x %x %x", Dump6Chars, NULL, NULL, NULL },
- { L"Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Memory Range Length",8, 16, L"0x%lx", NULL, NULL, ValidateRangeLength8,
- NULL },
- { L"Doorbell Register",12, 24, NULL, DumpGas, NULL, ValidatePccMemoryIoGas,
- NULL },
- { L"Doorbell Preserve",8, 36, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Doorbell Write", 8, 44, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Nominal Latency", 4, 52, L"%u", NULL, NULL, NULL, NULL },
- { L"Maximum Periodic Access Rate",4, 56, L"%u", NULL, NULL, NULL, NULL },
- { L"Minimum Request Turnaround Time",2, 60, L"%u", NULL, NULL, NULL, NULL }
-};
-
-/**
- An ACPI_PARSER array describing the HW-Reduced Communications Subspace
- - Type 1
-*/
-STATIC CONST ACPI_PARSER PccSubspaceType1Parser[] = {
- PCC_SUBSPACE_HEADER (),
- { L"Platform Interrupt",4, 2, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Platform Interrupt Flags",1, 6, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Reserved", 1, 7, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Memory Range Length",8, 16, L"0x%lx", NULL, NULL, ValidateRangeLength8,
- NULL },
- { L"Doorbell Register",12, 24, NULL, DumpGas, NULL,
- ValidatePccGas, NULL },
- { L"Doorbell Preserve",8, 36, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Doorbell Write", 8, 44, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Nominal Latency", 4, 52, L"%u", NULL, NULL, NULL, NULL },
- { L"Maximum Periodic Access Rate",4, 56, L"%u", NULL, NULL, NULL, NULL },
- { L"Minimum Request Turnaround Time",2, 60, L"%u", NULL, NULL, NULL, NULL }
-};
-
-/**
- An ACPI_PARSER array describing the HW-Reduced Communications Subspace
- - Type 2
-*/
-STATIC CONST ACPI_PARSER PccSubspaceType2Parser[] = {
- PCC_SUBSPACE_HEADER (),
- { L"Platform Interrupt",4, 2, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Platform Interrupt Flags",1, 6, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Reserved", 1, 7, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Memory Range Length",8, 16, L"0x%lx", NULL, NULL, ValidateRangeLength8,
- NULL },
- { L"Doorbell Register",12, 24, NULL, DumpGas, NULL,
- ValidatePccGas, NULL },
- { L"Doorbell Preserve",8, 36, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Doorbell Write", 8, 44, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Nominal Latency", 4, 52, L"%u", NULL, NULL, NULL, NULL },
- { L"Maximum Periodic Access Rate",4, 56, L"%u", NULL, NULL, NULL, NULL },
- { L"Minimum Request Turnaround Time",2, 60, L"%u", NULL, NULL, NULL, NULL },
- { L"Platform Interrupt Ack Register",12, 62, NULL, DumpGas, NULL,
- ValidatePccGas, NULL },
- { L"Platform Interrupt Ack Preserve",8, 74, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Platform Interrupt Ack Write",8, 82, L"0x%lx", NULL, NULL,
- NULL, NULL },
-};
-
-/**
- An ACPI_PARSER array describing the Extended PCC Subspaces - Type 3/4
-*/
-STATIC CONST ACPI_PARSER PccSubspaceType3Parser[] = {
- PCC_SUBSPACE_HEADER (),
- { L"Platform Interrupt", 4, 2, L"0x%x", NULL, NULL,
- ValidatePlatInterrupt, NULL },
- { L"Platform Interrupt Flags", 1, 6, L"0x%x", NULL,
- (VOID **)&ExtendedPccSubspaceInterruptFlags,NULL, NULL },
- { L"Reserved", 1, 7, L"0x%x", NULL, NULL,NULL, NULL },
- { L"Base Address", 8, 8, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Memory Range Length", 4, 16, L"0x%x", NULL, NULL,ValidateRangeLength4,
- NULL },
- { L"Doorbell Register", 12, 20, NULL, DumpGas, NULL,
- ValidatePccDoorbellGas, NULL },
- { L"Doorbell Preserve", 8, 32, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Doorbell Write", 8, 40, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Nominal Latency", 4, 48, L"%u", NULL, NULL,NULL, NULL },
- { L"Maximum Periodic Access Rate", 4, 52, L"%u", NULL, NULL,NULL, NULL },
- { L"Minimum Request Turnaround Time", 4, 56, L"%u", NULL, NULL,NULL, NULL },
- { L"Platform Interrupt Ack Register", 12, 60, NULL, DumpGas, NULL,
- ValidatePccIntAckGas, NULL },
- { L"Platform Interrupt Ack Preserve", 8, 72, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Platform Interrupt Ack Set", 8, 80, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Reserved", 8, 88, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Cmd Complete Check Reg Addr", 12, 96, NULL, DumpGas, NULL,
- ValidatePccGas, NULL },
- { L"Cmd Complete Check Mask", 8, 108, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Cmd Update Reg Addr", 12, 116, NULL, DumpGas, NULL,
- ValidatePccGas, NULL },
- { L"Cmd Update Preserve mask", 8, 128, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Cmd Update Set mask", 8, 136, L"0x%lx", NULL, NULL,NULL, NULL },
- { L"Error Status Register", 12, 144, NULL, DumpGas, NULL,
- ValidatePccErrStatusGas, NULL },
- { L"Error Status Mask", 8, 156, L"0x%lx", NULL, NULL,NULL, NULL },
-};
-
-/**
- An ACPI_PARSER array describing the HW Registers based Communications
- Subspace Structure - Type 5
-*/
-STATIC CONST ACPI_PARSER PccSubspaceType5Parser[] = {
- PCC_SUBSPACE_HEADER (),
- { L"Version", 2, 2, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Base Address", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Shared Memory Range Length",8, 12, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Doorbell Register", 12, 20, NULL, DumpGas, NULL,
- ValidatePccMemoryIoGas,NULL },
- { L"Doorbell Preserve", 8, 32, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Doorbell Write", 8, 40, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Command Complete Check Register",12, 48, NULL, DumpGas, NULL,
- ValidatePccMemoryIoGas,NULL },
- { L"Command Complete Check Mask",8, 60, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Error Status Register",12, 68, NULL, DumpGas, NULL,
- ValidatePccMemoryIoGas,NULL },
- { L"Error Status Mask", 8, 80, L"0x%lx", NULL, NULL, NULL, NULL },
- { L"Nominal Latency", 4, 88, L"0x%x", NULL, NULL, NULL, NULL },
- { L"Minimum Request Turnaround Time",4, 92, L"0x%x", NULL, NULL, NULL, NULL }
-};
-
-/**
- This function parses the PCC Subspace type 0.
-
- @param [in] Ptr Pointer to the start of Subspace Structure.
- @param [in] Length Length of the Subspace Structure.
-**/
-STATIC
-VOID
-DumpPccSubspaceType0 (
- IN UINT8 *Ptr,
- IN UINT8 Length
- )
-{
- ParseAcpi (
- TRUE,
- 2,
- "Subspace Type 0",
- Ptr,
- Length,
- PARSER_PARAMS (PccSubspaceType0Parser)
- );
-}
-
-/**
- This function parses the PCC Subspace type 1.
-
- @param [in] Ptr Pointer to the start of the Subspace Structure.
- @param [in] Length Length of the Subspace Structure.
-**/
-STATIC
-VOID
-DumpPccSubspaceType1 (
- IN UINT8 *Ptr,
- IN UINT8 Length
- )
-{
- ParseAcpi (
- TRUE,
- 2,
- "Subspace Type 1",
- Ptr,
- Length,
- PARSER_PARAMS (PccSubspaceType1Parser)
- );
-}
-
-/**
- This function parses the PCC Subspace type 2.
-
- @param [in] Ptr Pointer to the start of the Subspace Structure.
- @param [in] Length Length of the Subspace Structure.
-**/
-STATIC
-VOID
-DumpPccSubspaceType2 (
- IN UINT8 *Ptr,
- IN UINT8 Length
- )
-{
- ParseAcpi (
- TRUE,
- 2,
- "Subspace Type 2",
- Ptr,
- Length,
- PARSER_PARAMS (PccSubspaceType2Parser)
- );
-}
-
-/**
- This function parses the PCC Subspace type 3.
-
- @param [in] Ptr Pointer to the start of the Subspace Structure.
- @param [in] Length Length of the Subspace Structure.
-**/
-STATIC
-VOID
-DumpPccSubspaceType3 (
- IN UINT8 *Ptr,
- IN UINT8 Length
- )
-{
- ParseAcpi (
- TRUE,
- 2,
- "Subspace Type 3",
- Ptr,
- Length,
- PARSER_PARAMS (PccSubspaceType3Parser)
- );
-}
-
-/**
- This function parses the PCC Subspace type 4.
-
- @param [in] Ptr Pointer to the start of the Subspace Structure.
- @param [in] Length Length of the Subspace Structure.
-**/
-STATIC
-VOID
-DumpPccSubspaceType4 (
- IN UINT8 *Ptr,
- IN UINT8 Length
- )
-{
- ParseAcpi (
- TRUE,
- 2,
- "Subspace Type 4",
- Ptr,
- Length,
- PARSER_PARAMS (PccSubspaceType3Parser)
- );
-}
-
-/**
- This function parses the PCC Subspace type 5.
-
- @param [in] Ptr Pointer to the start of the Subspace Structure.
- @param [in] Length Length of the Subspace Structure.
-**/
-STATIC
-VOID
-DumpPccSubspaceType5 (
- IN UINT8 *Ptr,
- IN UINT8 Length
- )
-{
- ParseAcpi (
- TRUE,
- 2,
- "Subspace Type 5",
- Ptr,
- Length,
- PARSER_PARAMS (PccSubspaceType5Parser)
- );
-}
-
-/**
- This function parses the ACPI PCCT table including its sub-structures
- of type 0 through 4.
- When trace is enabled this function parses the PCCT table and
- traces the ACPI table fields.
-
- This function also performs validation of the ACPI table fields.
-
- @param [in] Trace If TRUE, trace the ACPI fields.
- @param [in] Ptr Pointer to the start of the buffer.
- @param [in] AcpiTableLength Length of the ACPI table.
- @param [in] AcpiTableRevision Revision of the ACPI table.
-**/
-VOID
-EFIAPI
-ParseAcpiPcct (
- IN BOOLEAN Trace,
- IN UINT8 *Ptr,
- IN UINT32 AcpiTableLength,
- IN UINT8 AcpiTableRevision
- )
-{
- UINT32 Offset;
- UINT8 *PccSubspacePtr;
- UINTN SubspaceCount;
-
- if (!Trace) {
- return;
- }
-
- Offset = ParseAcpi (
- TRUE,
- 0,
- "PCCT",
- Ptr,
- AcpiTableLength,
- PARSER_PARAMS (PcctParser)
- );
-
- PccSubspacePtr = Ptr + Offset;
-
- SubspaceCount = 0;
- while (Offset < AcpiTableLength) {
- // Parse common structure header to obtain Type and Length.
- ParseAcpi (
- FALSE,
- 0,
- NULL,
- PccSubspacePtr,
- AcpiTableLength - Offset,
- PARSER_PARAMS (PccSubspaceHeaderParser)
- );
-
- // Check if the values used to control the parsing logic have been
- // successfully read.
- if ((PccSubspaceType == NULL) ||
- (PccSubspaceLength == NULL))
- {
- IncrementErrorCount ();
- Print (
- L"ERROR: Insufficient remaining table buffer length to read the " \
- L"structure header. Length = %u.\n",
- AcpiTableLength - Offset
- );
- return;
- }
-
- // Validate Structure length
- if ((*PccSubspaceLength == 0) ||
- ((Offset + (*PccSubspaceLength)) > AcpiTableLength))
- {
- IncrementErrorCount ();
- Print (
- L"ERROR: Invalid Structure length. " \
- L"Length = %u. Offset = %u. AcpiTableLength = %u.\n",
- *PccSubspaceLength,
- Offset,
- AcpiTableLength
- );
- return;
- }
-
- switch (*PccSubspaceType) {
- case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_GENERIC:
- DumpPccSubspaceType0 (
- PccSubspacePtr,
- *PccSubspaceLength
- );
- break;
- case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_1_HW_REDUCED_COMMUNICATIONS:
- DumpPccSubspaceType1 (
- PccSubspacePtr,
- *PccSubspaceLength
- );
- break;
- case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_2_HW_REDUCED_COMMUNICATIONS:
- DumpPccSubspaceType2 (
- PccSubspacePtr,
- *PccSubspaceLength
- );
- break;
- case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_3_EXTENDED_PCC:
- DumpPccSubspaceType3 (
- PccSubspacePtr,
- *PccSubspaceLength
- );
- break;
- case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC:
- DumpPccSubspaceType4 (
- PccSubspacePtr,
- *PccSubspaceLength
- );
- break;
- case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_5_HW_REGISTERS_COMMUNICATIONS:
- DumpPccSubspaceType5 (
- PccSubspacePtr,
- *PccSubspaceLength
- );
- break;
- default:
- IncrementErrorCount ();
- Print (
- L"ERROR: Unknown PCC subspace structure:"
- L" Type = %u, Length = %u\n",
- PccSubspaceType,
- *PccSubspaceLength
- );
- }
-
- PccSubspacePtr += *PccSubspaceLength;
- Offset += *PccSubspaceLength;
- SubspaceCount++;
- } // while
-
- if (SubspaceCount > MAX_PCC_SUBSPACES) {
- IncrementErrorCount ();
- Print (L"ERROR: Too many PCC subspaces.");
- }
-}
+/** @file + PCCT table parser + + Copyright (c) 2021, Arm Limited. + SPDX-License-Identifier: BSD-2-Clause-Patent + + @par Reference(s): + - ACPI 6.4 Specification - January 2021 +**/ + +#include <Library/BaseMemoryLib.h> +#include <Library/PrintLib.h> +#include <Library/UefiLib.h> +#include "AcpiParser.h" +#include "AcpiView.h" +#include "AcpiViewConfig.h" +#include "PcctParser.h" + +// Local variables +STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo; + +STATIC UINT32 *PccGlobalFlags; +STATIC UINT8 *PccSubspaceLength; +STATIC UINT8 *PccSubspaceType; +STATIC UINT8 *ExtendedPccSubspaceInterruptFlags; + +/** + This function validates the length coded on 4 bytes of a shared memory range + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidateRangeLength4 ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + if (*(UINT32 *)Ptr < MIN_EXT_PCC_SUBSPACE_MEM_RANGE_LEN) { + IncrementErrorCount (); + Print ( + L"\nError: Shared memory range length is too short.\n" + L"Length is %u when it should be greater than or equal to %u", + *(UINT32 *)Ptr, + MIN_EXT_PCC_SUBSPACE_MEM_RANGE_LEN + ); + } +} + +/** + This function validates the length coded on 8 bytes of a shared memory range + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidateRangeLength8 ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + if (*(UINT64 *)Ptr <= MIN_MEMORY_RANGE_LENGTH) { + IncrementErrorCount (); + Print ( + L"\nError: Shared memory range length is too short.\n" + L"Length is %u when it should be greater than %u", + *(UINT64 *)Ptr, + MIN_MEMORY_RANGE_LENGTH + ); + } +} + +/** + This function validates address space for Memory/IO GAS. + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidatePccMemoryIoGas ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + switch (*(UINT8 *)Ptr) { + #if !(defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)) + case EFI_ACPI_6_4_SYSTEM_IO: + #endif //if not (defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)) + case EFI_ACPI_6_4_SYSTEM_MEMORY: + return; + default: + IncrementErrorCount (); + Print (L"\nError: Invalid address space"); + } +} + +/** + This function validates address space for structures of types other than 0. + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidatePccGas ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + switch (*(UINT8 *)Ptr) { + #if !(defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)) + case EFI_ACPI_6_4_SYSTEM_IO: + #endif //if not (defined (MDE_CPU_ARM) || defined (MDE_CPU_AARCH64)) + case EFI_ACPI_6_4_FUNCTIONAL_FIXED_HARDWARE: + case EFI_ACPI_6_4_SYSTEM_MEMORY: + return; + default: + IncrementErrorCount (); + Print (L"\nError: Invalid address space"); + } +} + +/** + This function validates doorbell address space for type 4 structure. + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidatePccDoorbellGas ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + // For responder subspaces this field is optional, if not present the field + // should just contain zeros. + if (*PccSubspaceType == EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC) { + if (IsZeroBuffer ( + Ptr, + sizeof (EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE) + )) + { + return; + } + } + + ValidatePccGas (Ptr, Context); +} + +/** + This function validates interrupt acknowledge address space for + type 4 structure. + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidatePccIntAckGas ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + // If the subspace does not support interrupts or the interrupt is + // edge driven the register may be omitted. A value of 0x0 on all + // 12 bytes of the GAS structure indicates the register is not + // present. + if (((*PccGlobalFlags & EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT) != + EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT) || + ((*ExtendedPccSubspaceInterruptFlags & + EFI_ACPI_6_4_PCCT_SUBSPACE_PLATFORM_INTERRUPT_FLAGS_MODE) == + EFI_ACPI_6_4_PCCT_SUBSPACE_PLATFORM_INTERRUPT_FLAGS_MODE)) + { + if (IsZeroBuffer ( + Ptr, + sizeof (EFI_ACPI_6_4_GENERIC_ADDRESS_STRUCTURE) + )) + { + return; + } + } + + ValidatePccGas (Ptr, Context); +} + +/** + This function validates error status address space for type 4 structure. + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidatePccErrStatusGas ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + // This field is ignored by the OSPM on responder channels. + if (*PccSubspaceType == EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC) { + return; + } + + ValidatePccGas (Ptr, Context); +} + +/** + This function validates platform interrupt flags for type 4 structure. + + @param [in] Ptr Pointer to the start of the field data. + @param [in] Context Pointer to context specific information e.g. this + could be a pointer to the ACPI table header. +**/ +STATIC +VOID +EFIAPI +ValidatePlatInterrupt ( + IN UINT8 *Ptr, + IN VOID *Context + ) +{ + // If a responder subspace is present in the PCCT, then the global Platform + // Interrupt flag must be set to 1. + if ((*PccSubspaceType == EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC) && + ((*PccGlobalFlags & EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT) != + EFI_ACPI_6_4_PCCT_FLAGS_PLATFORM_INTERRUPT)) + { + IncrementErrorCount (); + Print ( + L"\nError: Global Platform interrupt flag must be set to 1" \ + L" if a PCC type 4 structure is present in PCCT." + ); + } +} + +/** + An ACPI_PARSER array describing the ACPI PCCT Table. +*/ +STATIC CONST ACPI_PARSER PcctParser[] = { + PARSE_ACPI_HEADER (&AcpiHdrInfo), + { L"Flags", 4, 36, NULL, NULL, (VOID **)&PccGlobalFlags, NULL, NULL }, + { L"Reserved", 8, 40, NULL, NULL, NULL, NULL, NULL } +}; + +/** + An ACPI_PARSER array describing the platform communications channel subspace + structure header. +*/ +STATIC CONST ACPI_PARSER PccSubspaceHeaderParser[] = { + PCC_SUBSPACE_HEADER () + // ... Type Specific Fields ... +}; + +/** + An ACPI_PARSER array describing the Generic Communications Subspace - Type 0 +*/ +STATIC CONST ACPI_PARSER PccSubspaceType0Parser[] = { + PCC_SUBSPACE_HEADER (), + { L"Reserved", 6, 2, L"%x %x %x %x %x %x", Dump6Chars, NULL, NULL, NULL }, + { L"Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Memory Range Length",8, 16, L"0x%lx", NULL, NULL, ValidateRangeLength8, + NULL }, + { L"Doorbell Register",12, 24, NULL, DumpGas, NULL, ValidatePccMemoryIoGas, + NULL }, + { L"Doorbell Preserve",8, 36, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Doorbell Write", 8, 44, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Nominal Latency", 4, 52, L"%u", NULL, NULL, NULL, NULL }, + { L"Maximum Periodic Access Rate",4, 56, L"%u", NULL, NULL, NULL, NULL }, + { L"Minimum Request Turnaround Time",2, 60, L"%u", NULL, NULL, NULL, NULL } +}; + +/** + An ACPI_PARSER array describing the HW-Reduced Communications Subspace + - Type 1 +*/ +STATIC CONST ACPI_PARSER PccSubspaceType1Parser[] = { + PCC_SUBSPACE_HEADER (), + { L"Platform Interrupt",4, 2, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Platform Interrupt Flags",1, 6, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Reserved", 1, 7, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Memory Range Length",8, 16, L"0x%lx", NULL, NULL, ValidateRangeLength8, + NULL }, + { L"Doorbell Register",12, 24, NULL, DumpGas, NULL, + ValidatePccGas, NULL }, + { L"Doorbell Preserve",8, 36, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Doorbell Write", 8, 44, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Nominal Latency", 4, 52, L"%u", NULL, NULL, NULL, NULL }, + { L"Maximum Periodic Access Rate",4, 56, L"%u", NULL, NULL, NULL, NULL }, + { L"Minimum Request Turnaround Time",2, 60, L"%u", NULL, NULL, NULL, NULL } +}; + +/** + An ACPI_PARSER array describing the HW-Reduced Communications Subspace + - Type 2 +*/ +STATIC CONST ACPI_PARSER PccSubspaceType2Parser[] = { + PCC_SUBSPACE_HEADER (), + { L"Platform Interrupt",4, 2, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Platform Interrupt Flags",1, 6, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Reserved", 1, 7, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Base Address", 8, 8, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Memory Range Length",8, 16, L"0x%lx", NULL, NULL, ValidateRangeLength8, + NULL }, + { L"Doorbell Register",12, 24, NULL, DumpGas, NULL, + ValidatePccGas, NULL }, + { L"Doorbell Preserve",8, 36, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Doorbell Write", 8, 44, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Nominal Latency", 4, 52, L"%u", NULL, NULL, NULL, NULL }, + { L"Maximum Periodic Access Rate",4, 56, L"%u", NULL, NULL, NULL, NULL }, + { L"Minimum Request Turnaround Time",2, 60, L"%u", NULL, NULL, NULL, NULL }, + { L"Platform Interrupt Ack Register",12, 62, NULL, DumpGas, NULL, + ValidatePccGas, NULL }, + { L"Platform Interrupt Ack Preserve",8, 74, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Platform Interrupt Ack Write",8, 82, L"0x%lx", NULL, NULL, + NULL, NULL }, +}; + +/** + An ACPI_PARSER array describing the Extended PCC Subspaces - Type 3/4 +*/ +STATIC CONST ACPI_PARSER PccSubspaceType3Parser[] = { + PCC_SUBSPACE_HEADER (), + { L"Platform Interrupt", 4, 2, L"0x%x", NULL, NULL, + ValidatePlatInterrupt, NULL }, + { L"Platform Interrupt Flags", 1, 6, L"0x%x", NULL, + (VOID **)&ExtendedPccSubspaceInterruptFlags,NULL, NULL }, + { L"Reserved", 1, 7, L"0x%x", NULL, NULL,NULL, NULL }, + { L"Base Address", 8, 8, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Memory Range Length", 4, 16, L"0x%x", NULL, NULL,ValidateRangeLength4, + NULL }, + { L"Doorbell Register", 12, 20, NULL, DumpGas, NULL, + ValidatePccDoorbellGas, NULL }, + { L"Doorbell Preserve", 8, 32, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Doorbell Write", 8, 40, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Nominal Latency", 4, 48, L"%u", NULL, NULL,NULL, NULL }, + { L"Maximum Periodic Access Rate", 4, 52, L"%u", NULL, NULL,NULL, NULL }, + { L"Minimum Request Turnaround Time", 4, 56, L"%u", NULL, NULL,NULL, NULL }, + { L"Platform Interrupt Ack Register", 12, 60, NULL, DumpGas, NULL, + ValidatePccIntAckGas, NULL }, + { L"Platform Interrupt Ack Preserve", 8, 72, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Platform Interrupt Ack Set", 8, 80, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Reserved", 8, 88, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Cmd Complete Check Reg Addr", 12, 96, NULL, DumpGas, NULL, + ValidatePccGas, NULL }, + { L"Cmd Complete Check Mask", 8, 108, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Cmd Update Reg Addr", 12, 116, NULL, DumpGas, NULL, + ValidatePccGas, NULL }, + { L"Cmd Update Preserve mask", 8, 128, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Cmd Update Set mask", 8, 136, L"0x%lx", NULL, NULL,NULL, NULL }, + { L"Error Status Register", 12, 144, NULL, DumpGas, NULL, + ValidatePccErrStatusGas, NULL }, + { L"Error Status Mask", 8, 156, L"0x%lx", NULL, NULL,NULL, NULL }, +}; + +/** + An ACPI_PARSER array describing the HW Registers based Communications + Subspace Structure - Type 5 +*/ +STATIC CONST ACPI_PARSER PccSubspaceType5Parser[] = { + PCC_SUBSPACE_HEADER (), + { L"Version", 2, 2, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Base Address", 8, 4, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Shared Memory Range Length",8, 12, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Doorbell Register", 12, 20, NULL, DumpGas, NULL, + ValidatePccMemoryIoGas,NULL }, + { L"Doorbell Preserve", 8, 32, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Doorbell Write", 8, 40, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Command Complete Check Register",12, 48, NULL, DumpGas, NULL, + ValidatePccMemoryIoGas,NULL }, + { L"Command Complete Check Mask",8, 60, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Error Status Register",12, 68, NULL, DumpGas, NULL, + ValidatePccMemoryIoGas,NULL }, + { L"Error Status Mask", 8, 80, L"0x%lx", NULL, NULL, NULL, NULL }, + { L"Nominal Latency", 4, 88, L"0x%x", NULL, NULL, NULL, NULL }, + { L"Minimum Request Turnaround Time",4, 92, L"0x%x", NULL, NULL, NULL, NULL } +}; + +/** + This function parses the PCC Subspace type 0. + + @param [in] Ptr Pointer to the start of Subspace Structure. + @param [in] Length Length of the Subspace Structure. +**/ +STATIC +VOID +DumpPccSubspaceType0 ( + IN UINT8 *Ptr, + IN UINT8 Length + ) +{ + ParseAcpi ( + TRUE, + 2, + "Subspace Type 0", + Ptr, + Length, + PARSER_PARAMS (PccSubspaceType0Parser) + ); +} + +/** + This function parses the PCC Subspace type 1. + + @param [in] Ptr Pointer to the start of the Subspace Structure. + @param [in] Length Length of the Subspace Structure. +**/ +STATIC +VOID +DumpPccSubspaceType1 ( + IN UINT8 *Ptr, + IN UINT8 Length + ) +{ + ParseAcpi ( + TRUE, + 2, + "Subspace Type 1", + Ptr, + Length, + PARSER_PARAMS (PccSubspaceType1Parser) + ); +} + +/** + This function parses the PCC Subspace type 2. + + @param [in] Ptr Pointer to the start of the Subspace Structure. + @param [in] Length Length of the Subspace Structure. +**/ +STATIC +VOID +DumpPccSubspaceType2 ( + IN UINT8 *Ptr, + IN UINT8 Length + ) +{ + ParseAcpi ( + TRUE, + 2, + "Subspace Type 2", + Ptr, + Length, + PARSER_PARAMS (PccSubspaceType2Parser) + ); +} + +/** + This function parses the PCC Subspace type 3. + + @param [in] Ptr Pointer to the start of the Subspace Structure. + @param [in] Length Length of the Subspace Structure. +**/ +STATIC +VOID +DumpPccSubspaceType3 ( + IN UINT8 *Ptr, + IN UINT8 Length + ) +{ + ParseAcpi ( + TRUE, + 2, + "Subspace Type 3", + Ptr, + Length, + PARSER_PARAMS (PccSubspaceType3Parser) + ); +} + +/** + This function parses the PCC Subspace type 4. + + @param [in] Ptr Pointer to the start of the Subspace Structure. + @param [in] Length Length of the Subspace Structure. +**/ +STATIC +VOID +DumpPccSubspaceType4 ( + IN UINT8 *Ptr, + IN UINT8 Length + ) +{ + ParseAcpi ( + TRUE, + 2, + "Subspace Type 4", + Ptr, + Length, + PARSER_PARAMS (PccSubspaceType3Parser) + ); +} + +/** + This function parses the PCC Subspace type 5. + + @param [in] Ptr Pointer to the start of the Subspace Structure. + @param [in] Length Length of the Subspace Structure. +**/ +STATIC +VOID +DumpPccSubspaceType5 ( + IN UINT8 *Ptr, + IN UINT8 Length + ) +{ + ParseAcpi ( + TRUE, + 2, + "Subspace Type 5", + Ptr, + Length, + PARSER_PARAMS (PccSubspaceType5Parser) + ); +} + +/** + This function parses the ACPI PCCT table including its sub-structures + of type 0 through 4. + When trace is enabled this function parses the PCCT table and + traces the ACPI table fields. + + This function also performs validation of the ACPI table fields. + + @param [in] Trace If TRUE, trace the ACPI fields. + @param [in] Ptr Pointer to the start of the buffer. + @param [in] AcpiTableLength Length of the ACPI table. + @param [in] AcpiTableRevision Revision of the ACPI table. +**/ +VOID +EFIAPI +ParseAcpiPcct ( + IN BOOLEAN Trace, + IN UINT8 *Ptr, + IN UINT32 AcpiTableLength, + IN UINT8 AcpiTableRevision + ) +{ + UINT32 Offset; + UINT8 *PccSubspacePtr; + UINTN SubspaceCount; + + if (!Trace) { + return; + } + + Offset = ParseAcpi ( + TRUE, + 0, + "PCCT", + Ptr, + AcpiTableLength, + PARSER_PARAMS (PcctParser) + ); + + PccSubspacePtr = Ptr + Offset; + + SubspaceCount = 0; + while (Offset < AcpiTableLength) { + // Parse common structure header to obtain Type and Length. + ParseAcpi ( + FALSE, + 0, + NULL, + PccSubspacePtr, + AcpiTableLength - Offset, + PARSER_PARAMS (PccSubspaceHeaderParser) + ); + + // Check if the values used to control the parsing logic have been + // successfully read. + if ((PccSubspaceType == NULL) || + (PccSubspaceLength == NULL)) + { + IncrementErrorCount (); + Print ( + L"ERROR: Insufficient remaining table buffer length to read the " \ + L"structure header. Length = %u.\n", + AcpiTableLength - Offset + ); + return; + } + + // Validate Structure length + if ((*PccSubspaceLength == 0) || + ((Offset + (*PccSubspaceLength)) > AcpiTableLength)) + { + IncrementErrorCount (); + Print ( + L"ERROR: Invalid Structure length. " \ + L"Length = %u. Offset = %u. AcpiTableLength = %u.\n", + *PccSubspaceLength, + Offset, + AcpiTableLength + ); + return; + } + + switch (*PccSubspaceType) { + case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_GENERIC: + DumpPccSubspaceType0 ( + PccSubspacePtr, + *PccSubspaceLength + ); + break; + case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_1_HW_REDUCED_COMMUNICATIONS: + DumpPccSubspaceType1 ( + PccSubspacePtr, + *PccSubspaceLength + ); + break; + case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_2_HW_REDUCED_COMMUNICATIONS: + DumpPccSubspaceType2 ( + PccSubspacePtr, + *PccSubspaceLength + ); + break; + case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_3_EXTENDED_PCC: + DumpPccSubspaceType3 ( + PccSubspacePtr, + *PccSubspaceLength + ); + break; + case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_4_EXTENDED_PCC: + DumpPccSubspaceType4 ( + PccSubspacePtr, + *PccSubspaceLength + ); + break; + case EFI_ACPI_6_4_PCCT_SUBSPACE_TYPE_5_HW_REGISTERS_COMMUNICATIONS: + DumpPccSubspaceType5 ( + PccSubspacePtr, + *PccSubspaceLength + ); + break; + default: + IncrementErrorCount (); + Print ( + L"ERROR: Unknown PCC subspace structure:" + L" Type = %u, Length = %u\n", + PccSubspaceType, + *PccSubspaceLength + ); + } + + PccSubspacePtr += *PccSubspaceLength; + Offset += *PccSubspaceLength; + SubspaceCount++; + } // while + + if (SubspaceCount > MAX_PCC_SUBSPACES) { + IncrementErrorCount (); + Print (L"ERROR: Too many PCC subspaces."); + } +} |