diff options
| author | Le Tan <tamlokveer@gmail.com> | 2014-08-16 13:55:39 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2014-08-28 23:10:22 +0200 |
| commit | d4eb911935640139eef7f1dd5cf9db7141578554 (patch) | |
| tree | d3e27d60c378c6e9391eb19b388423a7fd7f1350 /hw/i386/acpi-defs.h | |
| parent | 1da12ec4c81330eb1ed1f29a78854bea87a23595 (diff) | |
intel-iommu: add DMAR table to ACPI tables
Expose Intel IOMMU to the BIOS. If object of TYPE_INTEL_IOMMU_DEVICE exists,
add DMAR table to ACPI RSDT table. For now the DMAR table indicates that there
is only one hardware unit without INTR_REMAP capability on the platform.
Signed-off-by: Le Tan <tamlokveer@gmail.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'hw/i386/acpi-defs.h')
| -rw-r--r-- | hw/i386/acpi-defs.h | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/hw/i386/acpi-defs.h b/hw/i386/acpi-defs.h index 1bc974a363..c4468f84e8 100644 --- a/hw/i386/acpi-defs.h +++ b/hw/i386/acpi-defs.h @@ -325,4 +325,44 @@ struct Acpi20Tcpa { } QEMU_PACKED; typedef struct Acpi20Tcpa Acpi20Tcpa; +/* DMAR - DMA Remapping table r2.2 */ +struct AcpiTableDmar { + ACPI_TABLE_HEADER_DEF + uint8_t host_address_width; /* Maximum DMA physical addressability */ + uint8_t flags; + uint8_t reserved[10]; +} QEMU_PACKED; +typedef struct AcpiTableDmar AcpiTableDmar; + +/* Masks for Flags field above */ +#define ACPI_DMAR_INTR_REMAP 1 +#define ACPI_DMAR_X2APIC_OPT_OUT (1 << 1) + +/* Values for sub-structure type for DMAR */ +enum { + ACPI_DMAR_TYPE_HARDWARE_UNIT = 0, /* DRHD */ + ACPI_DMAR_TYPE_RESERVED_MEMORY = 1, /* RMRR */ + ACPI_DMAR_TYPE_ATSR = 2, /* ATSR */ + ACPI_DMAR_TYPE_HARDWARE_AFFINITY = 3, /* RHSR */ + ACPI_DMAR_TYPE_ANDD = 4, /* ANDD */ + ACPI_DMAR_TYPE_RESERVED = 5 /* Reserved for furture use */ +}; + +/* + * Sub-structures for DMAR + */ +/* Type 0: Hardware Unit Definition */ +struct AcpiDmarHardwareUnit { + uint16_t type; + uint16_t length; + uint8_t flags; + uint8_t reserved; + uint16_t pci_segment; /* The PCI Segment associated with this unit */ + uint64_t address; /* Base address of remapping hardware register-set */ +} QEMU_PACKED; +typedef struct AcpiDmarHardwareUnit AcpiDmarHardwareUnit; + +/* Masks for Flags field above */ +#define ACPI_DMAR_INCLUDE_PCI_ALL 1 + #endif |