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CIM_DMA class

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The CIM_DMA class represents computer architecture direct memory access (DMA).

Important

The DMTF (Distributed Management Task Force) CIM (Common Information Model) classes are the parent classes upon which WMI classes are built. WMI currently supports only the CIM 2.x version schemas.

The following syntax is simplified from Managed Object Format (MOF) code and includes all inherited properties. Properties are listed in alphabetic order, not MOF order.

Syntax

[Abstract, UUID("{8502C523-5FBB-11D2-AAC1-006008C78BC7}"), AMENDMENT]
class CIM_DMA : CIM_SystemResource
{
  uint16   AddressSize;
  uint16   Availability;
  boolean  BurstMode;
  uint16   ByteMode;
  string   Caption;
  uint16   ChannelTiming;
  string   CreationClassName;
  string   CSCreationClassName;
  string   CSName;
  string   Description;
  uint32   DMAChannel;
  datetime InstallDate;
  uint32   MaxTransferSize;
  string   Name;
  string   Status;
  uint16   TransferWidths[];
  uint16   TypeCTiming;
  uint16   WordMode;
};

Members

The CIM_DMA class has these types of members:

Properties

The CIM_DMA class has these properties.

AddressSize

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|System Resource DMA Info|001.3"), Units ("bits")

DMA channel address size, in bits. Permissible values are 8, 16, 32, and 64. If unknown, enter 0.

(0)

(8)

(16)

(32)

(64)

Availability

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|DMA|001.2")

Availability of the DMA.

Other (1)

Unknown (2)

Unknown.

Available (3)

Available.

In Use/Not Available (4)

In use (not available).

In Use and Available/Shareable (5)

In use, but available (sharable).

BurstMode

Data type: boolean

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|DMA|001.3")

If TRUE, the DMA channel supports burst mode.

ByteMode

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|System Resource DMA Info|001.7")

Indicates whether DMA can execute in count-by-byte mode.

Other (1)

Other.

Unknown (2)

Unknown.

Not execute in 'count by byte' mode (3)

Cannot execute in count-by-byte mode.

Execute in 'count by byte' mode (4)

Able to execute in count-by-byte mode.

Caption

Data type: string

Access type: Read-only

Qualifiers: MaxLen (64), DisplayName ("Caption")

Short textual description of the object.

This property is inherited from CIM_ManagedSystemElement.

ChannelTiming

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|System Resource DMA Info|001.9")

DMA channel timing.

Other (1)

Other.

Unknown (2)

Unknown.

ISA Compatible (3)

ISA-compatible.

Type A (4)

Type A.

Type B (5)

Type B.

Type F (6)

Type F.

CreationClassName

Data type: string

Access type: Read-only

Qualifiers: MaxLen (256), CIM_Key

Name of the class or subclass used in the creation of an instance. When used with other key properties of the class, this property allows all instances of the class and its subclasses to be uniquely identified.

CSCreationClassName

Data type: string

Access type: Read-only

Qualifiers: Propagated ("CIM_ComputerSystem.CreationClassName"), MaxLen (256), CIM_Key

Scoping computer system's creation class name.

CSName

Data type: string

Access type: Read-only

Qualifiers: Propagated ("CIM_ComputerSystem.Name"), CIM_Key, MaxLen (256)

Scoping computer system's name.

Description

Data type: string

Access type: Read-only

Qualifiers: DisplayName ("Description")

Textual description of the object.

This property is inherited from CIM_ManagedSystemElement.

DMAChannel

Data type: uint32

Access type: Read-only

Qualifiers: Key, MappingStrings ("MIF.DMTF|DMA|001.1")

DMA channel number. This number is part of the object's key value.

InstallDate

Data type: datetime

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|ComponentID|001.5"), DisplayName ("Install Date")

Date and time the object was installed. This property does not need a value to indicate that the object is installed.

This property is inherited from CIM_ManagedSystemElement.

MaxTransferSize

Data type: uint32

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|System Resource DMA Info|001.4"), Units ("bytes")

Maximum number of bytes that can be transferred by this DMA channel. If unknown, enter 0 (zero).

Name

Data type: string

Access type: Read-only

Qualifiers: DisplayName ("Name")

Label by which the object is known. When subclassed, this property can be overridden to be a key property.

This property is inherited from CIM_ManagedSystemElement.

Status

Data type: string

Access type: Read-only

Qualifiers: MaxLen (10), DisplayName ("Status")

Indicates the current status of the object.

This property is inherited from CIM_ManagedSystemElement.

Values include the following:

OK ("OK")

Error ("Error")

Degraded ("Degraded")

Unknown ("Unknown")

Pred Fail ("Pred Fail")

Starting ("Starting")

Stopping ("Stopping")

Service ("Service")

Stressed ("Stressed")

NonRecover ("NonRecover")

No Contact ("No Contact")

Lost Comm ("Lost Comm")

TransferWidths

Data type: uint16 array

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|System Resource DMA Info|001.2"), Units ("bits")

Array that indicates all of the transfer widths, in bits, supported by this DMA channel. Permissible values are 8, 16, 32, 64, and 128 bits. If unknown, enter 0 (zero).

(0)

(8)

(16)

(32)

(64)

(128)

TypeCTiming

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|System Resource DMA Info|001.10")

Indicates whether Type C (burst) timing is supported.

Other (1)

Other.

Unknown (2)

Unknown.

ISA Compatible (3)

ISA-compatible.

Not Supported (4)

Not supported.

Supported (5)

Supported.

WordMode

Data type: uint16

Access type: Read-only

Qualifiers: MappingStrings ("MIF.DMTF|System Resource DMA Info|001.8")

Indicates whether DMA can execute in count-by-word mode.

Other (1)

Other.

Unknown (2)

Unknown.

Not execute in 'count by word' mode (3)

Cannot execute in count-by-word mode.

Execute in 'count by word' mode (4)

Able to execute in count-by-word mode.

Remarks

The CIM_DMA class is derived from CIM_SystemResource.

WMI does not implement this class. For classes derived from CIM_DMA, see Win32 Classes.

This documentation is derived from the CIM class descriptions published by the DMTF. Microsoft may have made changes to correct minor errors, conform to Microsoft SDK documentation standards, or provide more information.

Requirements

Requirement Value
Minimum supported client
 Windows Vista
Minimum supported server
 Windows Server 2008
Namespace
 Root\CIMV2
MOF
CIMWin32.mof
DLL
CIMWin32.dll

See also

CIM_SystemResource