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346 lines
12 KiB
C
346 lines
12 KiB
C
/** @file
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EFI NVDIMM Label Protocol Definition
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The EFI NVDIMM Label Protocol is used to Provides services that allow management
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of labels contained in a Label Storage Area that are associated with a specific
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NVDIMM Device Path.
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Copyright (c) 2017, 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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This Protocol was introduced in UEFI Specification 2.7.
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**/
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#ifndef __EFI_NVDIMM_LABEL_PROTOCOL_H__
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#define __EFI_NVDIMM_LABEL_PROTOCOL_H__
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#define EFI_NVDIMM_LABEL_PROTOCOL_GUID \
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{ \
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0xd40b6b80, 0x97d5, 0x4282, {0xbb, 0x1d, 0x22, 0x3a, 0x16, 0x91, 0x80, 0x58 } \
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}
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typedef struct _EFI_NVDIMM_LABEL_PROTOCOL EFI_NVDIMM_LABEL_PROTOCOL;
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#define EFI_NVDIMM_LABEL_INDEX_SIG_LEN 16
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#define EFI_NVDIMM_LABEL_INDEX_ALIGN 256
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typedef struct {
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///
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/// Signature of the Index Block data structure. Must be "NAMESPACE_INDEX\0".
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///
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CHAR8 Sig[EFI_NVDIMM_LABEL_INDEX_SIG_LEN];
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///
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/// Attributes of this Label Storage Area.
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///
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UINT8 Flags[3];
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///
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/// Size of each label in bytes, 128 bytes << LabelSize.
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/// 1 means 256 bytes, 2 means 512 bytes, etc. Shall be 1 or greater.
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///
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UINT8 LabelSize;
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///
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/// Sequence number used to identify which of the two Index Blocks is current.
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///
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UINT32 Seq;
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///
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/// The offset of this Index Block in the Label Storage Area.
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///
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UINT64 MyOff;
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///
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/// The size of this Index Block in bytes.
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/// This field must be a multiple of the EFI_NVDIMM_LABEL_INDEX_ALIGN.
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///
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UINT64 MySize;
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///
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/// The offset of the other Index Block paired with this one.
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///
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UINT64 OtherOff;
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///
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/// The offset of the first slot where labels are stored in this Label Storage Area.
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///
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UINT64 LabelOff;
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///
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/// The total number of slots for storing labels in this Label Storage Area.
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///
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UINT32 NSlot;
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///
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/// Major version number. Value shall be 1.
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///
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UINT16 Major;
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///
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/// Minor version number. Value shall be 2.
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///
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UINT16 Minor;
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///
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/// 64-bit Fletcher64 checksum of all fields in this Index Block.
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///
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UINT64 Checksum;
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///
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/// Array of unsigned bytes implementing a bitmask that tracks which label slots are free.
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/// A bit value of 0 indicates in use, 1 indicates free.
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/// The size of this field is the number of bytes required to hold the bitmask with NSlot bits,
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/// padded with additional zero bytes to make the Index Block size a multiple of EFI_NVDIMM_LABEL_INDEX_ALIGN.
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/// Any bits allocated beyond NSlot bits must be zero.
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///
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UINT8 Free[];
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} EFI_NVDIMM_LABEL_INDEX_BLOCK;
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#define EFI_NVDIMM_LABEL_NAME_LEN 64
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///
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/// The label is read-only.
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///
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#define EFI_NVDIMM_LABEL_FLAGS_ROLABEL 0x00000001
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///
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/// When set, the complete label set is local to a single NVDIMM Label Storage Area.
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/// When clear, the complete label set is contained on multiple NVDIMM Label Storage Areas.
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///
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#define EFI_NVDIMM_LABEL_FLAGS_LOCAL 0x00000002
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///
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/// This reserved flag is utilized on older implementations and has been deprecated.
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/// Do not use.
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//
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#define EFI_NVDIMM_LABEL_FLAGS_RESERVED 0x00000004
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///
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/// When set, the label set is being updated.
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///
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#define EFI_NVDIMM_LABEL_FLAGS_UPDATING 0x00000008
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typedef struct {
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///
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/// Unique Label Identifier UUID per RFC 4122.
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///
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EFI_GUID Uuid;
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///
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/// NULL-terminated string using UTF-8 character formatting.
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///
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CHAR8 Name[EFI_NVDIMM_LABEL_NAME_LEN];
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///
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/// Attributes of this namespace.
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///
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UINT32 Flags;
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///
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/// Total number of labels describing this namespace.
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///
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UINT16 NLabel;
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///
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/// Position of this label in list of labels for this namespace.
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///
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UINT16 Position;
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///
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/// The SetCookie is utilized by SW to perform consistency checks on the Interleave Set to verify the current
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/// physical device configuration matches the original physical configuration when the labels were created
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/// for the set.The label is considered invalid if the actual label set cookie doesn't match the cookie stored here.
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///
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UINT64 SetCookie;
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///
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/// This is the default logical block size in bytes and may be superseded by a block size that is specified
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/// in the AbstractionGuid.
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///
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UINT64 LbaSize;
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///
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/// The DPA is the DIMM Physical address where the NVM contributing to this namespace begins on this NVDIMM.
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///
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UINT64 Dpa;
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///
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/// The extent of the DPA contributed by this label.
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///
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UINT64 RawSize;
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///
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/// Current slot in the Label Storage Area where this label is stored.
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///
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UINT32 Slot;
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///
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/// Alignment hint used to advertise the preferred alignment of the data from within the namespace defined by this label.
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///
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UINT8 Alignment;
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///
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/// Shall be 0.
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///
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UINT8 Reserved[3];
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///
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/// Range Type GUID that describes the access mechanism for the specified DPA range.
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///
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EFI_GUID TypeGuid;
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///
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/// Identifies the address abstraction mechanism for this namespace. A value of 0 indicates no mechanism used.
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///
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EFI_GUID AddressAbstractionGuid;
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///
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/// Shall be 0.
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///
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UINT8 Reserved1[88];
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///
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/// 64-bit Fletcher64 checksum of all fields in this Label.
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/// This field is considered zero when the checksum is computed.
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///
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UINT64 Checksum;
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} EFI_NVDIMM_LABEL;
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typedef struct {
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///
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/// The Region Offset field from the ACPI NFIT NVDIMM Region Mapping Structure for a given entry.
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///
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UINT64 RegionOffset;
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///
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/// The serial number of the NVDIMM, assigned by the module vendor.
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///
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UINT32 SerialNumber;
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///
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/// The identifier indicating the vendor of the NVDIMM.
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///
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UINT16 VendorId;
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///
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/// The manufacturing date of the NVDIMM, assigned by the module vendor.
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///
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UINT16 ManufacturingDate;
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///
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/// The manufacturing location from for the NVDIMM, assigned by the module vendor.
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///
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UINT8 ManufacturingLocation;
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///
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/// Shall be 0.
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///
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UINT8 Reserved[31];
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} EFI_NVDIMM_LABEL_SET_COOKIE_MAP;
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typedef struct {
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///
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/// Array size is 1 if EFI_NVDIMM_LABEL_FLAGS_LOCAL is set indicating a Local Namespaces.
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///
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EFI_NVDIMM_LABEL_SET_COOKIE_MAP Mapping[0];
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} EFI_NVDIMM_LABEL_SET_COOKIE_INFO;
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/**
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Retrieves the Label Storage Area size and the maximum transfer size for the LabelStorageRead and
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LabelStorageWrite methods.
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@param This A pointer to the EFI_NVDIMM_LABEL_PROTOCOL instance.
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@param SizeOfLabelStorageArea The size of the Label Storage Area for the NVDIMM in bytes.
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@param MaxTransferLength The maximum number of bytes that can be transferred in a single call to
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LabelStorageRead or LabelStorageWrite.
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@retval EFI_SUCCESS The size of theLabel Storage Area and maximum transfer size returned are valid.
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@retval EFI_ACCESS_DENIED The Label Storage Area for the NVDIMM device is not currently accessible.
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@retval EFI_DEVICE_ERROR A physical device error occurred and the data transfer failed to complete.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_NVDIMM_LABEL_STORAGE_INFORMATION) (
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IN EFI_NVDIMM_LABEL_PROTOCOL *This,
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OUT UINT32 *SizeOfLabelStorageArea,
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OUT UINT32 *MaxTransferLength
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);
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/**
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Retrieves the label data for the requested offset and length from within the Label Storage Area for
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the NVDIMM.
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@param This A pointer to the EFI_NVDIMM_LABEL_PROTOCOL instance.
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@param Offset The byte offset within the Label Storage Area to read from.
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@param TransferLength Number of bytes to read from the Label Storage Area beginning at the byte
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Offset specified. A TransferLength of 0 reads no data.
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@param LabelData The return label data read at the requested offset and length from within
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the Label Storage Area.
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@retval EFI_SUCCESS The label data from the Label Storage Area for the NVDIMM was read successfully
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at the specified Offset and TransferLength and LabelData contains valid data.
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@retval EFI_INVALID_PARAMETER Any of the following are true:
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- Offset > SizeOfLabelStorageArea reported in the LabelStorageInformation return data.
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- Offset + TransferLength is > SizeOfLabelStorageArea reported in the
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LabelStorageInformation return data.
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- TransferLength is > MaxTransferLength reported in the LabelStorageInformation return
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data.
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@retval EFI_ACCESS_DENIED The Label Storage Area for the NVDIMM device is not currently accessible and labels
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cannot be read at this time.
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@retval EFI_DEVICE_ERROR A physical device error occurred and the data transfer failed to complete.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_NVDIMM_LABEL_STORAGE_READ) (
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IN CONST EFI_NVDIMM_LABEL_PROTOCOL *This,
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IN UINT32 Offset,
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IN UINT32 TransferLength,
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OUT UINT8 *LabelData
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);
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/**
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Writes the label data for the requested offset and length in to the Label Storage Area for the NVDIMM.
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@param This A pointer to the EFI_NVDIMM_LABEL_PROTOCOL instance.
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@param Offset The byte offset within the Label Storage Area to write to.
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@param TransferLength Number of bytes to write to the Label Storage Area beginning at the byte
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Offset specified. A TransferLength of 0 writes no data.
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@param LabelData The return label data write at the requested offset and length from within
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the Label Storage Area.
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@retval EFI_SUCCESS The label data from the Label Storage Area for the NVDIMM written read successfully
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at the specified Offset and TransferLength.
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@retval EFI_INVALID_PARAMETER Any of the following are true:
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- Offset > SizeOfLabelStorageArea reported in the LabelStorageInformation return data.
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- Offset + TransferLength is > SizeOfLabelStorageArea reported in the
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LabelStorageInformation return data.
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- TransferLength is > MaxTransferLength reported in the LabelStorageInformation return
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data.
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@retval EFI_ACCESS_DENIED The Label Storage Area for the NVDIMM device is not currently accessible and labels
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cannot be written at this time.
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@retval EFI_DEVICE_ERROR A physical device error occurred and the data transfer failed to complete.
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**/
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typedef
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EFI_STATUS
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(EFIAPI *EFI_NVDIMM_LABEL_STORAGE_WRITE) (
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IN CONST EFI_NVDIMM_LABEL_PROTOCOL *This,
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IN UINT32 Offset,
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IN UINT32 TransferLength,
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IN UINT8 *LabelData
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);
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///
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/// Provides services that allow management of labels contained in a Label Storage Area.
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///
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struct _EFI_NVDIMM_LABEL_PROTOCOL {
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EFI_NVDIMM_LABEL_STORAGE_INFORMATION LabelStorageInformation;
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EFI_NVDIMM_LABEL_STORAGE_READ LabelStorageRead;
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EFI_NVDIMM_LABEL_STORAGE_WRITE LabelStorageWrite;
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};
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extern EFI_GUID gEfiNvdimmLabelProtocolGuid;
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#endif
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