Advanced Configuration and Power Interface Specification

Advanced Configuration and Power Interface Specification
ResourceSource is an optional argument which evaluates to a string containing the path of a device
which produces the pool of resources from which this Memory range is allocated. If this argument is
specified, but the ResourceSourceIndex argument is not specified, a zero value is assumed.
DescriptorName is an optional argument that specifies a name for an integer constant that will be
created in the current scope that contains the offset of this resource descriptor within the current
resource template buffer. The predefined descriptor field names may be appended to this name to
access individual fields within the descriptor via the Buffer Field operators.
MemoryRangeType is an optional argument that specifies the memory usage. The memory can be
marked as normal (AddressRangeMemory), used as ACPI NVS space (AddressRangeNVS), used
as ACPI reclaimable space (AddressRangeACPI) or as system reserved
(AddressRangeReserved). If nothing is specified, then AddressRangeMemory is assumed. The 2-
bit field DescriptorName. _MTP is automatically created in order to refer to this portion of the
resource descriptor, where ‘0’ is AddressRangeMemory, ‘1’ is AddressRangeReserved, ‘2’ is
AddressRangeACPI and ‘3’ is AddressRangeNVS.
TranslationType is an optional argument that specifies whether the resource type on the secondary
side of the bus is different (TypeTranslation) from that on the primary side of the bus or the same
(TypeStatic). If TypeTranslation is specified, then the secondary side of the bus is I/O. If TypeStatic
is specified, then the secondary side of the bus is I/O. If nothing is specified, then TypeStatic is
assumed. The 1-bit field DescriptorName. _TTP is automatically created to refer to this portion of
the resource descriptor, where ‘1’ is TypeTranslation and ‘0’ is TypeStatic. See _TTP (page 365) for
more information.
Description
The QWordMemory macro evaluates to a buffer which contains a 64-bit memory resource
descriptor, which describes a range of memory addresses. The format of the 64-bit memory resource
descriptor can be found in “QWord Address Space Descriptor ” (page 354). The macro is designed
to be used inside of a ResourceTemplate (page 882).
19.6.105 QWordSpace (QWord Space Resource Descriptor Macro)
Syntax
QWordSpace (ResourceType, ResourceUsage, Decode, IsMinFixed, IsMaxFixed,
TypeSpecificFlags, AddressGranularity, AddressMinimum, AddressMaximum, AddressTranslation,
RangeLength, ResourceSourceIndex, ResourceSource, DescriptorName)
Arguments
ResourceType evaluates to an 8-bit integer that specifies the type of this resource. Acceptable values
are 0xC0 through 0xFF.
ResourceUsage specifies whether the Memory range is consumed by this device
(ResourceConsumer) or passed on to child devices (ResourceProducer). If nothing is specified,
then ResourceConsumer is assumed.
Decode specifies whether or not the device decodes the Memory range using positive (PosDecode)
or subtractive (SubDecode) decode. If nothing is specified, then PosDecode is assumed. The 1-bit
field DescriptorName. _DEC is automatically created to refer to this portion of the resource
descriptor, where ‘1’ is SubDecode and ‘0’ is PosDecode.
878 April, 2015 Version 6.0