ACPICA: Add support for DMAR table

Implement support for ACPI DMAR table (DMA
Remapping Table) in header files and disassembler.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 73 insertions, 0 deletions

diff --git a/include/acpi/actbl1.h b/include/acpi/actbl1.h
index 8ae30b7ed652..515d82c5ec63 100644
--- a/include/acpi/actbl1.h
+++ b/include/acpi/actbl1.h
@@ -61,6 +61,7 @@
 #define ACPI_SIG_BOOT           "BOOT"  /* Simple Boot Flag Table */
 #define ACPI_SIG_CPEP           "CPEP"  /* Corrected Platform Error Polling table */
 #define ACPI_SIG_DBGP           "DBGP"  /* Debug Port table */
+#define ACPI_SIG_DMAR           "DMAR"  /* DMA Remapping table */
 #define ACPI_SIG_ECDT           "ECDT"  /* Embedded Controller Boot Resources Table */
 #define ACPI_SIG_HPET           "HPET"  /* High Precision Event Timer table */
 #define ACPI_SIG_MADT           "APIC"  /* Multiple APIC Description Table */
@@ -228,6 +229,78 @@ struct acpi_table_dbgp {
 
 /*******************************************************************************
  *
+ * DMAR - DMA Remapping table
+ *
+ ******************************************************************************/
+
+struct acpi_table_dmar {
+        struct acpi_table_header header;        /* Common ACPI table header */
+        u8 width;               /* Host Address Width */
+        u8 reserved[11];
+};
+
+/* DMAR subtable header */
+
+struct acpi_dmar_header {
+        u16 type;
+        u16 length;
+        u8 flags;
+        u8 reserved[3];
+};
+
+/* Values for subtable type in struct acpi_dmar_header */
+
+enum acpi_dmar_type {
+        ACPI_DMAR_TYPE_HARDWARE_UNIT = 0,
+        ACPI_DMAR_TYPE_RESERVED_MEMORY = 1,
+        ACPI_DMAR_TYPE_RESERVED = 2     /* 2 and greater are reserved */
+};
+
+struct acpi_dmar_device_scope {
+        u8 entry_type;
+        u8 length;
+        u8 segment;
+        u8 bus;
+};
+
+/* Values for entry_type in struct acpi_dmar_device_scope */
+
+enum acpi_dmar_scope_type {
+        ACPI_DMAR_SCOPE_TYPE_NOT_USED = 0,
+        ACPI_DMAR_SCOPE_TYPE_ENDPOINT = 1,
+        ACPI_DMAR_SCOPE_TYPE_BRIDGE = 2,
+        ACPI_DMAR_SCOPE_TYPE_RESERVED = 3       /* 3 and greater are reserved */
+};
+
+/*
+ * DMAR Sub-tables, correspond to Type in struct acpi_dmar_header
+ */
+
+/* 0: Hardware Unit Definition */
+
+struct acpi_dmar_hardware_unit {
+        struct acpi_dmar_header header;
+        u64 address;            /* Register Base Address */
+};
+
+/* Flags */
+
+#define ACPI_DMAR_INCLUDE_ALL       (1)
+
+/* 1: Reserved Memory Defininition */
+
+struct acpi_dmar_reserved_memory {
+        struct acpi_dmar_header header;
+        u64 address;            /* 4_k aligned base address */
+        u64 end_address;        /* 4_k aligned limit address */
+};
+
+/* Flags */
+
+#define ACPI_DMAR_ALLOW_ALL         (1)
+
+/*******************************************************************************
+ *
  * ECDT - Embedded Controller Boot Resources Table
  *
  ******************************************************************************/