ACPI: Add IORT Structure definition

ACPI Spec 6.0 introduces IO Remapping Table Structure. This patch
introduces the definitions required to describe the IO relationship
between the PCIe root complex and the ITS.

This conforms to:
"IO Remapping Table System Software on ARM Platforms",
Document number: ARM DEN 0049B, October 2015.

Signed-off-by: Prem Mallappa <prem.mallappa@broadcom.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 1476707466-14300-2-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/include/hw/acpi/acpi-defs.h b/include/hw/acpi/acpi-defs.h
index 9c1b7cb..90a5353 100644 (file)
--- a/include/hw/acpi/acpi-defs.h
+++ b/include/hw/acpi/acpi-defs.h
@@ -609,4 +609,72 @@ typedef struct AcpiDmarHardwareUnit AcpiDmarHardwareUnit;
 /* Masks for Flags field above */
 #define ACPI_DMAR_INCLUDE_PCI_ALL   1
 
+/*
+ * Input Output Remapping Table (IORT)
+ * Conforms to "IO Remapping Table System Software on ARM Platforms",
+ * Document number: ARM DEN 0049B, October 2015
+ */
+
+struct AcpiIortTable {
+    ACPI_TABLE_HEADER_DEF     /* ACPI common table header */
+    uint32_t node_count;
+    uint32_t node_offset;
+    uint32_t reserved;
+} QEMU_PACKED;
+typedef struct AcpiIortTable AcpiIortTable;
+
+/*
+ * IORT node types
+ */
+
+#define ACPI_IORT_NODE_HEADER_DEF   /* Node format common fields */ \
+    uint8_t  type;          \
+    uint16_t length;        \
+    uint8_t  revision;      \
+    uint32_t reserved;      \
+    uint32_t mapping_count; \
+    uint32_t mapping_offset;
+
+/* Values for node Type above */
+enum {
+        ACPI_IORT_NODE_ITS_GROUP = 0x00,
+        ACPI_IORT_NODE_NAMED_COMPONENT = 0x01,
+        ACPI_IORT_NODE_PCI_ROOT_COMPLEX = 0x02,
+        ACPI_IORT_NODE_SMMU = 0x03,
+        ACPI_IORT_NODE_SMMU_V3 = 0x04
+};
+
+struct AcpiIortIdMapping {
+    uint32_t input_base;
+    uint32_t id_count;
+    uint32_t output_base;
+    uint32_t output_reference;
+    uint32_t flags;
+} QEMU_PACKED;
+typedef struct AcpiIortIdMapping AcpiIortIdMapping;
+
+struct AcpiIortMemoryAccess {
+    uint32_t cache_coherency;
+    uint8_t  hints;
+    uint16_t reserved;
+    uint8_t  memory_flags;
+} QEMU_PACKED;
+typedef struct AcpiIortMemoryAccess AcpiIortMemoryAccess;
+
+struct AcpiIortItsGroup {
+    ACPI_IORT_NODE_HEADER_DEF
+    uint32_t its_count;
+    uint32_t identifiers[0];
+} QEMU_PACKED;
+typedef struct AcpiIortItsGroup AcpiIortItsGroup;
+
+struct AcpiIortRC {
+    ACPI_IORT_NODE_HEADER_DEF
+    AcpiIortMemoryAccess memory_properties;
+    uint32_t ats_attribute;
+    uint32_t pci_segment_number;
+    AcpiIortIdMapping id_mapping_array[0];
+} QEMU_PACKED;
+typedef struct AcpiIortRC AcpiIortRC;
+
 #endif