[Xen-devel] [PATCH V3 4/29] tools/libacpi: Add DMA remapping reporting (DMAR) ACPI table structures

[Lan Tianyu <tianyu.lan@xxxxxxxxx>]

From: Chao Gao <chao.gao@xxxxxxxxx>

Add dmar table structure according Chapter 8 "BIOS Considerations" of
VTd spec Rev. 2.4.

VTd 
spec:http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/vt-directed-io-spec.pdf

Signed-off-by: Chao Gao <chao.gao@xxxxxxxxx>
Signed-off-by: Lan Tianyu <tianyu.lan@xxxxxxxxx>
---
 tools/libacpi/acpi2_0.h | 61 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/tools/libacpi/acpi2_0.h b/tools/libacpi/acpi2_0.h
index 2619ba3..758a823 100644
--- a/tools/libacpi/acpi2_0.h
+++ b/tools/libacpi/acpi2_0.h
@@ -422,6 +422,65 @@ struct acpi_20_slit {
 };
 
 /*
+ * DMA Remapping Table header definition (DMAR)
+ */
+
+/*
+ * DMAR Flags.
+ */
+#define ACPI_DMAR_INTR_REMAP        (1 << 0)
+#define ACPI_DMAR_X2APIC_OPT_OUT    (1 << 1)
+
+struct acpi_dmar {
+    struct acpi_header header;
+    uint8_t host_address_width;
+    uint8_t flags;
+    uint8_t reserved[10];
+};
+
+/*
+ * Device Scope Types
+ */
+#define ACPI_DMAR_DEVICE_SCOPE_PCI_ENDPOINT             0x01
+#define ACPI_DMAR_DEVICE_SCOPE_PCI_SUB_HIERARACHY       0x01
+#define ACPI_DMAR_DEVICE_SCOPE_IOAPIC                   0x03
+#define ACPI_DMAR_DEVICE_SCOPE_HPET                     0x04
+#define ACPI_DMAR_DEVICE_SCOPE_ACPI_NAMESPACE_DEVICE    0x05
+
+struct dmar_device_scope {
+    uint8_t type;
+    uint8_t length;
+    uint8_t reserved[2];
+    uint8_t enumeration_id;
+    uint8_t bus;
+    uint16_t path[0];
+};
+
+/*
+ * DMA Remapping Hardware Unit Types
+ */
+#define ACPI_DMAR_TYPE_HARDWARE_UNIT        0x00
+#define ACPI_DMAR_TYPE_RESERVED_MEMORY      0x01
+#define ACPI_DMAR_TYPE_ATSR                 0x02
+#define ACPI_DMAR_TYPE_HARDWARE_AFFINITY    0x03
+#define ACPI_DMAR_TYPE_ANDD                 0x04
+
+/*
+ * DMA Remapping Hardware Unit Flags. All other bits are reserved and must be 
0.
+ */
+#define ACPI_DMAR_INCLUDE_PCI_ALL   (1 << 0)
+
+struct acpi_dmar_hardware_unit {
+    uint16_t type;
+    uint16_t length;
+    uint8_t flags;
+    uint8_t reserved;
+    uint16_t pci_segment;
+    uint64_t base_address;
+    struct dmar_device_scope scope[0];
+};
+
+/*
  * Table Signatures.
  */
 #define ACPI_2_0_RSDP_SIGNATURE ASCII64('R','S','D',' ','P','T','R',' ')
@@ -435,6 +494,7 @@ struct acpi_20_slit {
 #define ACPI_2_0_WAET_SIGNATURE ASCII32('W','A','E','T')
 #define ACPI_2_0_SRAT_SIGNATURE ASCII32('S','R','A','T')
 #define ACPI_2_0_SLIT_SIGNATURE ASCII32('S','L','I','T')
+#define ACPI_2_0_DMAR_SIGNATURE ASCII32('D','M','A','R')
 
 /*
  * Table revision numbers.
@@ -449,6 +509,7 @@ struct acpi_20_slit {
 #define ACPI_1_0_FADT_REVISION 0x01
 #define ACPI_2_0_SRAT_REVISION 0x01
 #define ACPI_2_0_SLIT_REVISION 0x01
+#define ACPI_2_0_DMAR_REVISION 0x01
 
 #pragma pack ()
 
-- 
1.8.3.1


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