Advanced Configuration and Power Interface Specification

ACPI Source Language (ASL)Reference
Arguments
EdgeLevel describes whether the interrupt is edge triggered (Edge) or level triggered (Level). The
field DescriptorName. _HE is automatically created to refer to this portion of the resource
descriptor, where ‘1’ is Edge and ActiveHigh and ‘0’ is Level and ActiveLow.
ActiveLevel describes whether the interrupt is active-high (ActiveHigh) or active-low (ActiveLow).
The field DescriptorName. _LL is automatically created to refer to this portion of the resource
descriptor, where ‘1’ is Edge and ActiveHigh and ‘0’ is Level and ActiveLow.
Shared describes whether the interrupt can be shared with other devices (Shared) or not
(Exclusive), and whether it is capable of waking the system from a low-power idle or system sleep
state (SharedAndWake or ExclusiveAndWake). The field DescriptorName. _SHR is
automatically created to refer to this portion of the resource descriptor, where ‘1’ is Shared and ‘0’
is Exclusive. If nothing is specified, then Exclusive 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.
InterruptList is a comma-delimited list of integers in the range 0 through 15, at least one value is
required. There may be no duplicates in the list.
Description
The IRQ macro evaluates to a buffer that contains an IRQ resource descriptor. The format of the
IRQ descriptor can be found in “IRQ Descriptor” ((page 343). The macro produces the three-byte
form of the descriptor. The macro is designed to be used inside of a ResourceTemplate (page 882).
19.6.65 IRQNoFlags (Interrupt Resource Descriptor Macro)
Syntax
IRQNoFlags (DescriptorName) {InterruptList} => Buffer
Arguments
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.
InterruptList is a comma-delimited list of integers in the range 0 through 15, at least one value is
required. There may be no duplicates in the list Description
The IRQNoFlags macro evaluates to a buffer which contains an active-high, edge-triggered IRQ
resource descriptor. The format of the IRQ descriptor can be found in IRQ Descriptor (page 343).
The macro produces the two-byte form of the descriptor. The macro is designed to be used inside of
a ResourceTemplate (page 882).
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