Re: [PATCH v1 2/2] ShellPkg: acpiview: Update SRAT parser to ACPI 6.3

["Sami Mujawar" <sami.mujawar@arm.com>]

Reviewed-by: Sami Mujawar <sami.mujawar@arm.com>

-----Original Message-----
From: Krzysztof Koch <krzysztof.koch@arm.com> 
Sent: 12 June 2019 03:11 PM
To: devel@edk2.groups.io
Cc: jaben.carsey@intel.com; ray.ni@intel.com; zhichao.gao@intel.com; michael.d.kinney@intel.com; liming.gao@intel.com; Sami Mujawar <Sami.Mujawar@arm.com>; Matteo Carlini <Matteo.Carlini@arm.com>; Stephanie Hughes-Fitt <Stephanie.Hughes-Fitt@arm.com>; nd <nd@arm.com>
Subject: [PATCH v1 2/2] ShellPkg: acpiview: Update SRAT parser to ACPI 6.3

Add support for parsing revision 3 of System Resource Affinity Table (SRAT).

Decode and dump the new Generic Initiator Affinity Structure.

Validate the Device Handle Type field inside the Generic Initiator Affinity Structure.

Signed-off-by: Krzysztof Koch <krzysztof.koch@arm.com>
---

Changes can be seen at: https://github.com/KrzysztofKoch1/edk2/tree/582_acpiview_6_3_srat_v1

Notes:
    v1:
    - dump and validate the Generic Initiator Affinity Struct [Krzysztof]

 ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c              |  35 ++-
 ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.h              |  16 ++
 ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c | 256 +++++++++++++++++++-
 3 files changed, 299 insertions(+), 8 deletions(-)

diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c
index b5965507b498b9fa9bc4d3124b2285f509004c4f..60523936732f901317ee93d03fe06df1403f3695 100644
--- a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c
+++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.c
@@ -1,7 +1,7 @@
 /** @file
   ACPI parser
 
-  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
+  Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.
   SPDX-License-Identifier: BSD-2-Clause-Patent  **/
 
@@ -401,6 +401,39 @@ Dump8Chars (
     );
 }
 
+/**
+  This function traces 12 characters which can be optionally
+  formated using the format string if specified.
+
+  If no format string is specified the Format must be NULL.
+
+  @param [in] Format  Optional format string for tracing the data.
+  @param [in] Ptr     Pointer to the start of the buffer.
+**/
+VOID
+EFIAPI
+Dump12Chars (
+  IN CONST CHAR16* Format OPTIONAL,
+  IN       UINT8*  Ptr
+  )
+{
+  Print (
+    (Format != NULL) ? Format : L"%c%c%c%c%c%c%c%c%c%c%c%c",
+    Ptr[0],
+    Ptr[1],
+    Ptr[2],
+    Ptr[3],
+    Ptr[4],
+    Ptr[5],
+    Ptr[6],
+    Ptr[7],
+    Ptr[8],
+    Ptr[9],
+    Ptr[10],
+    Ptr[11]
+    );
+}
+
 /**
   This function indents and prints the ACPI table Field Name.
 
diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.h b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.h
index 7657892d9fd2e2e14c6578611ff0cf1b6f6cd750..5b23ab6fa9bd2f87e0347287872685a2f74622f3 100644
--- a/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.h
+++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/AcpiParser.h
@@ -184,6 +184,22 @@ Dump8Chars (
   IN UINT8*        Ptr
   );
 
+/**
+  This function traces 12 characters which can be optionally
+  formated using the format string if specified.
+
+  If no format string is specified the Format must be NULL.
+
+  @param [in] Format  Optional format string for tracing the data.
+  @param [in] Ptr     Pointer to the start of the buffer.
+**/
+VOID
+EFIAPI
+Dump12Chars (
+  IN CONST CHAR16* Format OPTIONAL,
+  IN       UINT8*  Ptr
+  );
+
 /**
   This function indents and prints the ACPI table Field Name.
 
diff --git a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c
index 075ff2a141a82b522e8aaedb7ad79249aaf5eaac..8c268a11454d13c9e278691d619a580c4c14c08e 100644
--- a/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratParser.c
+++ b/ShellPkg/Library/UefiShellAcpiViewCommandLib/Parsers/Srat/SratPars
+++ er.c
@@ -1,11 +1,11 @@
 /** @file
   SRAT table parser
 
-  Copyright (c) 2016 - 2018, ARM Limited. All rights reserved.
+  Copyright (c) 2016 - 2019, ARM Limited. All rights reserved.
   SPDX-License-Identifier: BSD-2-Clause-Patent
 
   @par Reference(s):
-    - ACPI 6.2 Specification - Errata A, September 2017
+    - ACPI 6.3 Specification - January 2019
 **/
 
 #include <IndustryStandard/Acpi.h>
@@ -17,6 +17,7 @@
 // Local Variables
 STATIC CONST UINT8* SratRAType;
 STATIC CONST UINT8* SratRALength;
+STATIC CONST UINT8* SratDeviceHandleType;
 STATIC ACPI_DESCRIPTION_HEADER_INFO AcpiHdrInfo;
 
 /**
@@ -34,6 +35,51 @@ ValidateSratReserved (
   IN VOID*  Context
   );
 
+/**
+  This function validates the Device Handle Type field in the Generic 
+Initiator
+  Affinity 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
+ValidateSratDeviceHandleType (
+  IN UINT8* Ptr,
+  IN VOID*  Context
+  );
+
+/**
+  This function traces the Device Handle field inside Generic Initiator
+  Affinity Structure.
+
+  @param [in] Format  Format string for tracing the data.
+  @param [in] Ptr     Pointer to the start of the buffer.
+**/
+STATIC
+VOID
+EFIAPI
+DumpSratDeviceHandle (
+  IN CONST CHAR16* Format,
+  IN       UINT8*  Ptr
+  );
+
+/**
+  This function traces the PCI BDF Number field inside Device Handle - 
+PCI
+
+  @param [in] Format  Format string for tracing the data.
+  @param [in] Ptr     Pointer to the start of the buffer.
+**/
+STATIC
+VOID
+EFIAPI
+DumpSratPciBdfNumber (
+  IN CONST CHAR16* Format,
+  IN       UINT8*  Ptr
+  );
+
 /**
   This function traces the APIC Proximity Domain field.
 
@@ -90,6 +136,41 @@ STATIC CONST ACPI_PARSER SratGicITSAffinityParser[] = {
   {L"ITS Id", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},  };
 
+/**
+  An ACPI_PARSER array describing the Generic Initiator Affinity 
+Structure **/ STATIC CONST ACPI_PARSER 
+SratGenericInitiatorAffinityParser[] = {
+  {L"Type", 1, 0, L"0x%x", NULL, NULL, NULL, NULL},
+  {L"Length", 1, 1, L"0x%x", NULL, NULL, NULL, NULL},
+
+  {L"Reserved", 1, 2, L"0x%x", NULL, NULL, NULL, NULL},
+  {L"Device Handle Type", 1, 3, L"%d", NULL, (VOID**)&SratDeviceHandleType,
+   ValidateSratDeviceHandleType, NULL},
+  {L"Proximity Domain", 4, 4, L"0x%x", NULL, NULL, NULL, NULL},
+  {L"Device Handle", 16, 8, L"%s", DumpSratDeviceHandle, NULL, NULL, 
+NULL},
+  {L"Flags", 4, 24, L"0x%x", NULL, NULL, NULL, NULL},
+  {L"Reserved", 4, 28, L"0x%x", NULL, NULL, NULL, NULL} };
+
+/**
+  An ACPI_PARSER array describing the Device Handle - ACPI **/ STATIC 
+CONST ACPI_PARSER SratDeviceHandleAcpiParser[] = {
+  {L"ACPI_HID", 8, 0, L"0x%x", NULL, NULL, NULL, NULL},
+  {L"ACPI_UID", 4, 8, L"0x%x", NULL, NULL, NULL, NULL},
+  {L"Reserved", 4, 12, L"0x%x", NULL, NULL, NULL, NULL} };
+
+/**
+  An ACPI_PARSER array describing the Device Handle - PCI **/ STATIC 
+CONST ACPI_PARSER SratDeviceHandlePciParser[] = {
+  {L"PCI Segment", 2, 0, L"0x%x", NULL, NULL, NULL, NULL},
+  {L"PCI BDF Number", 2, 2, NULL, DumpSratPciBdfNumber, NULL, NULL, 
+NULL},
+  {L"Reserved", 12, 4, L"%x %x %x %x - %x %x %x %x - %x %x %x %x", Dump12Chars,
+   NULL, NULL, NULL}
+};
+
 /**
   An ACPI_PARSER array describing the Memory Affinity structure.
 **/
@@ -159,6 +240,148 @@ ValidateSratReserved (
   }
 }
 
+/**
+  This function validates the Device Handle Type field in the Generic 
+Initiator
+  Affinity 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
+ValidateSratDeviceHandleType (
+  IN UINT8* Ptr,
+  IN VOID*  Context
+  )
+{
+  UINT8   DeviceHandleType;
+
+  DeviceHandleType = *Ptr;
+
+  if (DeviceHandleType > EFI_ACPI_6_3_PCI_DEVICE_HANDLE) {
+    IncrementErrorCount ();
+    Print (
+      L"\nERROR: Invalid Device Handle Type: %d. Must be between 0 and %d.",
+      DeviceHandleType,
+      EFI_ACPI_6_3_PCI_DEVICE_HANDLE
+      );
+  }
+}
+
+/**
+  This function traces the Device Handle field inside Generic Initiator
+  Affinity Structure.
+
+  @param [in] Format  Format string for tracing the data.
+  @param [in] Ptr     Pointer to the start of the buffer.
+**/
+STATIC
+VOID
+EFIAPI
+DumpSratDeviceHandle (
+  IN CONST CHAR16* Format,
+  IN UINT8*        Ptr
+ )
+{
+  if (SratDeviceHandleType == NULL) {
+    IncrementErrorCount ();
+    Print (L"\nERROR: Device Handle Type read incorrectly.\n");
+    return;
+  }
+
+  Print (L"\n");
+
+  if (*SratDeviceHandleType == EFI_ACPI_6_3_ACPI_DEVICE_HANDLE) {
+    ParseAcpi (
+      TRUE,
+      2,
+      NULL,
+      Ptr,
+      sizeof (EFI_ACPI_6_3_DEVICE_HANDLE_ACPI),
+      PARSER_PARAMS (SratDeviceHandleAcpiParser)
+      );
+  } else if (*SratDeviceHandleType == EFI_ACPI_6_3_PCI_DEVICE_HANDLE) {
+    ParseAcpi (
+      TRUE,
+      2,
+      NULL,
+      Ptr,
+      sizeof (EFI_ACPI_6_3_DEVICE_HANDLE_PCI),
+      PARSER_PARAMS (SratDeviceHandlePciParser)
+      );
+  }
+}
+
+/**
+  This function traces the PCI BDF Number field inside Device Handle - 
+PCI
+
+  @param [in] Format  Format string for tracing the data.
+  @param [in] Ptr     Pointer to the start of the buffer.
+**/
+STATIC
+VOID
+EFIAPI
+DumpSratPciBdfNumber (
+  IN CONST CHAR16* Format,
+  IN UINT8*        Ptr
+  )
+{
+  CHAR16 Buffer[OUTPUT_FIELD_COLUMN_WIDTH];
+
+  Print (L"\n");
+
+  /*
+    The PCI BDF Number subfields are printed in the order specified in the ACPI
+    specification. The format of the 16-bit PCI BDF Number field is as follows:
+
+    +-----+------+------+
+    |DEV  | FUNC | BUS  |
+    +-----+------+------+
+    |15:11| 10:8 |  7:0 |
+    +-----+------+------+
+  */
+
+  // Print PCI Bus Number (Bits 7:0 of Byte 2)  UnicodeSPrint (
+    Buffer,
+    sizeof (Buffer),
+    L"PCI Bus Number"
+    );
+  PrintFieldName (4, Buffer);
+  Print (
+    L"0x%x\n",
+    *Ptr
+    );
+
+  Ptr++;
+
+  // Print PCI Device Number (Bits 7:3 of Byte 3)  UnicodeSPrint (
+    Buffer,
+    sizeof (Buffer),
+    L"PCI Device Number"
+    );
+  PrintFieldName (4, Buffer);
+  Print (
+    L"0x%x\n",
+    (*Ptr & (BIT7 | BIT6 | BIT5 | BIT4 | BIT3)) >> 3
+    );
+
+  // PCI Function Number (Bits 2:0 of Byte 3)
+  UnicodeSPrint (
+    Buffer,
+    sizeof (Buffer),
+    L"PCI Function Number"
+    );
+  PrintFieldName (4, Buffer);
+  Print (
+    L"0x%x\n",
+    *Ptr & (BIT2 | BIT1 | BIT0)
+    );
+}
+
 /**
   This function traces the APIC Proximity Domain field.
 
@@ -211,6 +434,7 @@ ParseAcpiSrat (
   UINT8* ResourcePtr;
   UINT32 GicCAffinityIndex;
   UINT32 GicITSAffinityIndex;
+  UINT32 GenericInitiatorAffinityIndex;
   UINT32 MemoryAffinityIndex;
   UINT32 ApicSapicAffinityIndex;
   UINT32 X2ApicAffinityIndex;
@@ -218,6 +442,7 @@ ParseAcpiSrat (
 
   GicCAffinityIndex = 0;
   GicITSAffinityIndex = 0;
+  GenericInitiatorAffinityIndex = 0;
   MemoryAffinityIndex = 0;
   ApicSapicAffinityIndex = 0;
   X2ApicAffinityIndex = 0;
@@ -247,7 +472,7 @@ ParseAcpiSrat (
       );
 
     switch (*SratRAType) {
-      case EFI_ACPI_6_2_GICC_AFFINITY:
+      case EFI_ACPI_6_3_GICC_AFFINITY:
         AsciiSPrint (
           Buffer,
           sizeof (Buffer),
@@ -264,7 +489,7 @@ ParseAcpiSrat (
           );
         break;
 
-      case EFI_ACPI_6_2_GIC_ITS_AFFINITY:
+      case EFI_ACPI_6_3_GIC_ITS_AFFINITY:
         AsciiSPrint (
           Buffer,
           sizeof (Buffer),
@@ -281,7 +506,24 @@ ParseAcpiSrat (
         );
         break;
 
-      case EFI_ACPI_6_2_MEMORY_AFFINITY:
+      case EFI_ACPI_6_3_GENERIC_INITIATOR_AFFINITY:
+        AsciiSPrint (
+          Buffer,
+          sizeof (Buffer),
+          "Generic Initiator Affinity Structure [%d]",
+          GenericInitiatorAffinityIndex++
+        );
+        ParseAcpi (
+          TRUE,
+          2,
+          Buffer,
+          ResourcePtr,
+          *SratRALength,
+          PARSER_PARAMS (SratGenericInitiatorAffinityParser)
+        );
+        break;
+
+      case EFI_ACPI_6_3_MEMORY_AFFINITY:
         AsciiSPrint (
           Buffer,
           sizeof (Buffer),
@@ -298,7 +540,7 @@ ParseAcpiSrat (
           );
         break;
 
-      case EFI_ACPI_6_2_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY:
+      case EFI_ACPI_6_3_PROCESSOR_LOCAL_APIC_SAPIC_AFFINITY:
         AsciiSPrint (
           Buffer,
           sizeof (Buffer),
@@ -315,7 +557,7 @@ ParseAcpiSrat (
           );
         break;
 
-      case EFI_ACPI_6_2_PROCESSOR_LOCAL_X2APIC_AFFINITY:
+      case EFI_ACPI_6_3_PROCESSOR_LOCAL_X2APIC_AFFINITY:
         AsciiSPrint (
           Buffer,
           sizeof (Buffer),
--
'Guid(CE165669-3EF3-493F-B85D-6190EE5B9759)'