acpica-tools/0027-Support-SDEV-in-a-big-endian-world.patch

From 3d1ac6e76ad0c0d6454671b190ccbbfafb0cb4cc Mon Sep 17 00:00:00 2001
From: Al Stone <ahs3@redhat.com>
Date: Tue, 29 Jun 2021 16:03:36 -0600
Subject: [PATCH 27/45] Support SDEV in a big-endian world

Signed-off-by: Al Stone <ahs3@redhat.com>
---
 source/common/dmtbdump2.c  | 48 +++++++++++++++++++++-----------------
 source/compiler/dttable2.c | 27 ++++++++++++++++++++-
 2 files changed, 52 insertions(+), 23 deletions(-)

Index: acpica-unix2-20210730/source/common/dmtbdump2.c
===================================================================
--- acpica-unix2-20210730.orig/source/common/dmtbdump2.c
+++ acpica-unix2-20210730/source/common/dmtbdump2.c
@@ -2125,7 +2125,7 @@ AcpiDmDumpSdev (
     ACPI_SDEV_NAMESPACE         *Namesp;
     ACPI_DMTABLE_INFO           *InfoTable;
     ACPI_DMTABLE_INFO           *SecureComponentInfoTable;
-    UINT32                      Length = Table->Length;
+    UINT32                      TableLength = AcpiUtReadUint32 (&Table->Length);
     UINT32                      Offset = sizeof (ACPI_TABLE_SDEV);
     UINT16                      PathOffset;
     UINT16                      PathLength;
@@ -2133,11 +2133,12 @@ AcpiDmDumpSdev (
     UINT16                      VendorDataLength;
     ACPI_SDEV_SECURE_COMPONENT  *SecureComponent = NULL;
     UINT32                      CurrentOffset = 0;
+    UINT16                      SubtableLength;
 
 
     /* Main table */
 
-    Status = AcpiDmDumpTable (Length, 0, Table, 0, AcpiDmTableInfoSdev);
+    Status = AcpiDmDumpTable (TableLength, 0, Table, 0, AcpiDmTableInfoSdev);
     if (ACPI_FAILURE (Status))
     {
         return;
@@ -2146,13 +2147,14 @@ AcpiDmDumpSdev (
     /* Subtables */
 
     Subtable = ACPI_ADD_PTR (ACPI_SDEV_HEADER, Table, Offset);
-    while (Offset < Table->Length)
+    while (Offset < TableLength)
     {
         /* Common subtable header */
 
         AcpiOsPrintf ("\n");
-        Status = AcpiDmDumpTable (Table->Length, Offset, Subtable,
-            Subtable->Length, AcpiDmTableInfoSdevHdr);
+	SubtableLength = AcpiUtReadUint16 (&Subtable->Length);
+        Status = AcpiDmDumpTable (TableLength, Offset, Subtable,
+            SubtableLength, AcpiDmTableInfoSdevHdr);
         if (ACPI_FAILURE (Status))
         {
             return;
@@ -2175,8 +2177,8 @@ AcpiDmDumpSdev (
         }
 
         AcpiOsPrintf ("\n");
-        Status = AcpiDmDumpTable (Table->Length, 0, Subtable,
-            Subtable->Length, InfoTable);
+        Status = AcpiDmDumpTable (TableLength, 0, Subtable,
+            SubtableLength, InfoTable);
         if (ACPI_FAILURE (Status))
         {
             return;
@@ -2235,12 +2237,12 @@ AcpiDmDumpSdev (
             /* Dump the PCIe device ID(s) */
 
             Namesp = ACPI_CAST_PTR (ACPI_SDEV_NAMESPACE, Subtable);
-            PathOffset = Namesp->DeviceIdOffset;
-            PathLength = Namesp->DeviceIdLength;
+            PathOffset = AcpiUtReadUint16 (&Namesp->DeviceIdOffset);
+            PathLength = AcpiUtReadUint16 (&Namesp->DeviceIdLength);
 
             if (PathLength)
             {
-                Status = AcpiDmDumpTable (Table->Length, CurrentOffset,
+                Status = AcpiDmDumpTable (TableLength, CurrentOffset,
                     ACPI_ADD_PTR (UINT8, Namesp, PathOffset),
                     PathLength, AcpiDmTableInfoSdev0a);
                 if (ACPI_FAILURE (Status))
@@ -2252,14 +2254,14 @@ AcpiDmDumpSdev (
 
             /* Dump the vendor-specific data */
 
-            VendorDataLength =
-                Namesp->VendorDataLength;
+            VendorDataLength = AcpiUtReadUint16 (&Namesp->VendorDataLength);
             VendorDataOffset =
-                Namesp->DeviceIdOffset + Namesp->DeviceIdLength;
+                AcpiUtReadUint16 (&Namesp->DeviceIdOffset) +
+		AcpiUtReadUint16 (&Namesp->DeviceIdLength);
 
             if (VendorDataLength)
             {
-                Status = AcpiDmDumpTable (Table->Length, 0,
+                Status = AcpiDmDumpTable (TableLength, 0,
                     ACPI_ADD_PTR (UINT8, Namesp, VendorDataOffset),
                     VendorDataLength, AcpiDmTableInfoSdev1b);
                 if (ACPI_FAILURE (Status))
@@ -2274,12 +2276,12 @@ AcpiDmDumpSdev (
             /* PCI path substructures */
 
             Pcie = ACPI_CAST_PTR (ACPI_SDEV_PCIE, Subtable);
-            PathOffset = Pcie->PathOffset;
-            PathLength = Pcie->PathLength;
+            PathOffset = AcpiUtReadUint16 (&Pcie->PathOffset);
+            PathLength = AcpiUtReadUint16 (&Pcie->PathLength);
 
             while (PathLength)
             {
-                Status = AcpiDmDumpTable (Table->Length,
+                Status = AcpiDmDumpTable (TableLength,
                     PathOffset + Offset,
                     ACPI_ADD_PTR (UINT8, Pcie, PathOffset),
                     sizeof (ACPI_SDEV_PCIE_PATH), AcpiDmTableInfoSdev1a);
@@ -2294,12 +2296,14 @@ AcpiDmDumpSdev (
 
             /* VendorData */
 
-            VendorDataLength = Pcie->VendorDataLength;
-            VendorDataOffset = Pcie->PathOffset + Pcie->PathLength;
+            VendorDataLength = AcpiUtReadUint16 (&Pcie->VendorDataLength);
+            VendorDataOffset = 
+	            AcpiUtReadUint16 (&Pcie->PathOffset) +
+	            AcpiUtReadUint16 (&Pcie->PathLength);
 
             if (VendorDataLength)
             {
-                Status = AcpiDmDumpTable (Table->Length, 0,
+                Status = AcpiDmDumpTable (TableLength, 0,
                     ACPI_ADD_PTR (UINT8, Pcie, VendorDataOffset),
                     VendorDataLength, AcpiDmTableInfoSdev1b);
                 if (ACPI_FAILURE (Status))
@@ -2316,8 +2320,8 @@ AcpiDmDumpSdev (
 NextSubtable:
         /* Point to next subtable */
 
-        Offset += Subtable->Length;
+        Offset += SubtableLength;
         Subtable = ACPI_ADD_PTR (ACPI_SDEV_HEADER, Subtable,
-            Subtable->Length);
+            SubtableLength);
     }
 }
Index: acpica-unix2-20210730/source/compiler/dttable2.c
===================================================================
--- acpica-unix2-20210730.orig/source/compiler/dttable2.c
+++ acpica-unix2-20210730/source/compiler/dttable2.c
@@ -1493,6 +1493,7 @@ DtCompileSdev (
     UINT32                      EntryCount;
     ACPI_SDEV_SECURE_COMPONENT  *SecureComponent = NULL;
     UINT16                      ComponentLength = 0;
+    UINT16                      Tmp16;
 
 
     /* Subtables */
@@ -1514,7 +1515,7 @@ DtCompileSdev (
         DtPushSubtable (Subtable);
 
         SdevHeader = ACPI_CAST_PTR (ACPI_SDEV_HEADER, Subtable->Buffer);
-        SdevHeader->Length = (UINT8)(sizeof (ACPI_SDEV_HEADER));
+        SdevHeader->Length = (UINT16) (sizeof (ACPI_SDEV_HEADER));
 
         switch (SdevHeader->Type)
         {
@@ -1687,6 +1688,18 @@ DtCompileSdev (
                 }
             }
 
+            /* Make sure everything is now little-endian */
+            Tmp16 = AcpiUtReadUint16 (&SdevHeader->Length);
+            SdevHeader->Length = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Namesp->DeviceIdOffset);
+            Namesp->DeviceIdOffset = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Namesp->DeviceIdLength);
+            Namesp->DeviceIdLength = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Namesp->VendorDataOffset);
+            Namesp->VendorDataOffset = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Namesp->VendorDataLength);
+            Namesp->VendorDataLength = Tmp16;
+
             break;
 
         case ACPI_SDEV_TYPE_PCIE_ENDPOINT_DEVICE:
@@ -1749,6 +1762,18 @@ DtCompileSdev (
             SdevHeader->Length =
                 sizeof (ACPI_SDEV_PCIE) +
                 Pcie->PathLength + Pcie->VendorDataLength;
+
+            Tmp16 = AcpiUtReadUint16 (&SdevHeader->Length);
+            SdevHeader->Length = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Pcie->PathOffset);
+            Pcie->PathOffset = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Pcie->PathLength);
+            Pcie->PathLength = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Pcie->VendorDataOffset);
+            Pcie->VendorDataOffset = Tmp16;
+            Tmp16 = AcpiUtReadUint16 (&Pcie->VendorDataLength);
+            Pcie->VendorDataLength = Tmp16;
+		
             break;
 
         default: