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264 lines
10 KiB
C
264 lines
10 KiB
C
/** @file
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DMA Remapping Reporting (DMAR) ACPI table definition from Intel(R)
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Virtualization Technology for Directed I/O (VT-D) Architecture Specification.
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Copyright (c) 2016 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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@par Revision Reference:
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- Intel(R) Virtualization Technology for Directed I/O (VT-D) Architecture
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Specification v2.5, Dated November 2017.
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http://www.intel.com/content/dam/www/public/us/en/documents/product-specifications/vt-directed-io-spec.pdf
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@par Glossary:
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- HPET - High Precision Event Timer
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- NUMA - Non-uniform Memory Access
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**/
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#ifndef _DMA_REMAPPING_REPORTING_TABLE_H_
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#define _DMA_REMAPPING_REPORTING_TABLE_H_
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#include <IndustryStandard/Acpi.h>
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#pragma pack(1)
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///
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/// DMA-Remapping Reporting Structure definitions from section 8.1
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///@{
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#define EFI_ACPI_DMAR_REVISION 0x01
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#define EFI_ACPI_DMAR_FLAGS_INTR_REMAP BIT0
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#define EFI_ACPI_DMAR_FLAGS_X2APIC_OPT_OUT BIT1
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#define EFI_ACPI_DMAR_FLAGS_DMA_CTRL_PLATFORM_OPT_IN_FLAG BIT2
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///@}
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///
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/// Remapping Structure Types definitions from section 8.2
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///@{
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#define EFI_ACPI_DMAR_TYPE_DRHD 0x00
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#define EFI_ACPI_DMAR_TYPE_RMRR 0x01
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#define EFI_ACPI_DMAR_TYPE_ATSR 0x02
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#define EFI_ACPI_DMAR_TYPE_RHSA 0x03
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#define EFI_ACPI_DMAR_TYPE_ANDD 0x04
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///@}
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///
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/// DMA-Remapping Hardware Unit definitions from section 8.3
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///
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#define EFI_ACPI_DMAR_DRHD_FLAGS_INCLUDE_PCI_ALL BIT0
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///
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/// DMA-Remapping Device Scope Entry Structure definitions from section 8.3.1
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///@{
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#define EFI_ACPI_DEVICE_SCOPE_ENTRY_TYPE_PCI_ENDPOINT 0x01
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#define EFI_ACPI_DEVICE_SCOPE_ENTRY_TYPE_PCI_BRIDGE 0x02
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#define EFI_ACPI_DEVICE_SCOPE_ENTRY_TYPE_IOAPIC 0x03
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#define EFI_ACPI_DEVICE_SCOPE_ENTRY_TYPE_MSI_CAPABLE_HPET 0x04
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#define EFI_ACPI_DEVICE_SCOPE_ENTRY_TYPE_ACPI_NAMESPACE_DEVICE 0x05
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///@}
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///
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/// Root Port ATS Capability Reporting Structure definitions from section 8.5
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///
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#define EFI_ACPI_DMAR_ATSR_FLAGS_ALL_PORTS BIT0
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///
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/// Definition for DMA Remapping Structure Header
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///
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typedef struct {
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UINT16 Type;
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UINT16 Length;
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} EFI_ACPI_DMAR_STRUCTURE_HEADER;
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///
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/// Definition for DMA-Remapping PCI Path
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///
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typedef struct {
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UINT8 Device;
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UINT8 Function;
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} EFI_ACPI_DMAR_PCI_PATH;
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///
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/// Device Scope Structure is defined in section 8.3.1
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///
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typedef struct {
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UINT8 Type;
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UINT8 Length;
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UINT16 Reserved2;
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UINT8 EnumerationId;
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UINT8 StartBusNumber;
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} EFI_ACPI_DMAR_DEVICE_SCOPE_STRUCTURE_HEADER;
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/**
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DMA-remapping hardware unit definition (DRHD) structure is defined in
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section 8.3. This uniquely represents a remapping hardware unit present
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in the platform. There must be at least one instance of this structure
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for each PCI segment in the platform.
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**/
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typedef struct {
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EFI_ACPI_DMAR_STRUCTURE_HEADER Header;
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/**
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- Bit[0]: INCLUDE_PCI_ALL
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- If Set, this remapping hardware unit has under its scope all
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PCI compatible devices in the specified Segment, except devices
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reported under the scope of other remapping hardware units for
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the same Segment.
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- If Clear, this remapping hardware unit has under its scope only
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devices in the specified Segment that are explicitly identified
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through the DeviceScope field.
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- Bits[7:1] Reserved.
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**/
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UINT8 Flags;
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UINT8 Reserved;
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///
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/// The PCI Segment associated with this unit.
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///
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UINT16 SegmentNumber;
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///
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/// Base address of remapping hardware register-set for this unit.
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///
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UINT64 RegisterBaseAddress;
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} EFI_ACPI_DMAR_DRHD_HEADER;
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/**
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Reserved Memory Region Reporting Structure (RMRR) is described in section 8.4
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Reserved memory ranges that may be DMA targets may be reported through the
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RMRR structures, along with the devices that requires access to the specified
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reserved memory region.
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**/
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typedef struct {
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EFI_ACPI_DMAR_STRUCTURE_HEADER Header;
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UINT8 Reserved[2];
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///
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/// PCI Segment Number associated with devices identified through
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/// the Device Scope field.
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///
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UINT16 SegmentNumber;
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///
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/// Base address of 4KB-aligned reserved memory region
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///
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UINT64 ReservedMemoryRegionBaseAddress;
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/**
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Last address of the reserved memory region. Value in this field must be
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greater than the value in Reserved Memory Region Base Address field.
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The reserved memory region size (Limit - Base + 1) must be an integer
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multiple of 4KB.
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**/
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UINT64 ReservedMemoryRegionLimitAddress;
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} EFI_ACPI_DMAR_RMRR_HEADER;
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/**
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Root Port ATS Capability Reporting (ATSR) structure is defined in section 8.5.
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This structure is applicable only for platforms supporting Device-TLBs as
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reported through the Extended Capability Register. For each PCI Segment in
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the platform that supports Device-TLBs, BIOS provides an ATSR structure. The
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ATSR structures identifies PCI-Express Root-Ports supporting Address
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Translation Services (ATS) transactions. Software must enable ATS on endpoint
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devices behind a Root Port only if the Root Port is reported as supporting
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ATS transactions.
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**/
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typedef struct {
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EFI_ACPI_DMAR_STRUCTURE_HEADER Header;
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/**
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- Bit[0]: ALL_PORTS:
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- If Set, indicates all PCI Express Root Ports in the specified
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PCI Segment supports ATS transactions.
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- If Clear, indicates ATS transactions are supported only on
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Root Ports identified through the Device Scope field.
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- Bits[7:1] Reserved.
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**/
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UINT8 Flags;
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UINT8 Reserved;
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///
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/// The PCI Segment associated with this ATSR structure
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///
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UINT16 SegmentNumber;
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} EFI_ACPI_DMAR_ATSR_HEADER;
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/**
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Remapping Hardware Static Affinity (RHSA) is an optional structure defined
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in section 8.6. This is intended to be used only on NUMA platforms with
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Remapping hardware units and memory spanned across multiple nodes.
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When used, there must be a RHSA structure for each Remapping hardware unit
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reported through DRHD structure.
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**/
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typedef struct {
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EFI_ACPI_DMAR_STRUCTURE_HEADER Header;
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UINT8 Reserved[4];
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///
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/// Register Base Address of this Remap hardware unit reported in the
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/// corresponding DRHD structure.
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///
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UINT64 RegisterBaseAddress;
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///
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/// Proximity Domain to which the Remap hardware unit identified by the
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/// Register Base Address field belongs.
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///
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UINT32 ProximityDomain;
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} EFI_ACPI_DMAR_RHSA_HEADER;
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/**
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An ACPI Name-space Device Declaration (ANDD) structure is defined in section
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8.7 and uniquely represents an ACPI name-space enumerated device capable of
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issuing DMA requests in the platform. ANDD structures are used in conjunction
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with Device-Scope entries of type ACPI_NAMESPACE_DEVICE.
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**/
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typedef struct {
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EFI_ACPI_DMAR_STRUCTURE_HEADER Header;
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UINT8 Reserved[3];
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/**
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Each ACPI device enumerated through an ANDD structure must have a unique
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value for this field. To report an ACPI device with ACPI Device Number
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value of X, under the scope of a DRHD unit, a Device-Scope entry of type
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ACPI_NAMESPACE_DEVICE is used with value of X in the Enumeration ID field.
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The Start Bus Number and Path fields in the Device-Scope together
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provides the 16-bit source-id allocated by platform for the ACPI device.
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**/
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UINT8 AcpiDeviceNumber;
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} EFI_ACPI_DMAR_ANDD_HEADER;
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/**
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DMA Remapping Reporting Structure Header as defined in section 8.1
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This header will be followed by list of Remapping Structures listed below
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- DMA Remapping Hardware Unit Definition (DRHD)
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- Reserved Memory Region Reporting (RMRR)
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- Root Port ATS Capability Reporting (ATSR)
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- Remapping Hardware Static Affinity (RHSA)
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- ACPI Name-space Device Declaration (ANDD)
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These structure types must by reported in numerical order.
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i.e., All remapping structures of type 0 (DRHD) enumerated before remapping
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structures of type 1 (RMRR), and so forth.
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**/
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typedef struct {
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EFI_ACPI_DESCRIPTION_HEADER Header;
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/**
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This field indicates the maximum DMA physical addressability supported by
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this platform. The system address map reported by the BIOS indicates what
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portions of this addresses are populated. The Host Address Width (HAW) of
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the platform is computed as (N+1), where N is the value reported in this
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field.
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For example, for a platform supporting 40 bits of physical addressability,
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the value of 100111b is reported in this field.
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**/
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UINT8 HostAddressWidth;
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/**
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- Bit[0]: INTR_REMAP - If Clear, the platform does not support interrupt
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remapping. If Set, the platform supports interrupt remapping.
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- Bit[1]: X2APIC_OPT_OUT - For firmware compatibility reasons, platform
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firmware may Set this field to request system software to opt
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out of enabling Extended xAPIC (X2APIC) mode. This field is
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valid only when the INTR_REMAP field (bit 0) is Set.
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- Bit[2]: DMA_CTRL_PLATFORM_OPT_IN_FLAG - Platform firmware is
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recommended to Set this field to report any platform initiated
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DMA is restricted to only reserved memory regions (reported in
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RMRR structures) when transferring control to system software
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such as on ExitBootServices().
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- Bits[7:3] Reserved.
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**/
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UINT8 Flags;
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UINT8 Reserved[10];
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} EFI_ACPI_DMAR_HEADER;
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#pragma pack()
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#endif
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