Advanced Configuration and Power Interface Specification

ACPI Software Programming Model
Note: This status code is different than the IPMI completion code, which is returned as the first byte of
the response message in the data buffer payload. The completion code is described in the
complete IPMI specification.
Table 5-138 IPMI Status Codes
Status Code Name Description
00h IPMI OK Indicates the command has been successfully completed.
07h
IPMI Unknown Indicates failure because of an unknown IPMI error.
Failure
10h
IPMI Command
Operation Timeout
Indicates the operation timed out.
5.5.2.4.4 Declaring GeneralPurposeIO Operation Regions
For GeneralPurposeIO Operation Regions, the syntax for the OperationRegion term (from section
Section 19.6.97, “OperationRegion (Declare Operation Region]”) is described below.
OperationRegion (
RegionName,
RegionSpace,
Offset,
Length
)
Where:
// NameString
// RegionSpaceKeyword
// TermArg=>Integer
// TermArg=>Integer
• RegionName specifies a name for this GeneralPurposeIO region (for example, “GPI1”).
• RegionSpace must be set to GeneralPurposeIO (operation region type value 0x08).
• Offset is ignored for the GeneralPurposeIO RegionSpace.
• Length is the maximum number of GPIO IO pins to be included in the Operation Region,
rounded up to the next byte.
GeneralPurposeIO OpRegions must be declared within the scope of the GPIO controller device
being accessed.
5.5.2.4.4.1 Declaring GeneralPurposeIO Fields
As with other regions, GeneralPurposeIO operation regions are only accessible via the Field term.
Each field element represents a subset of the length bits declared in the OpRegion declaration. The
pins within the OpRegion that are accessed via a given field name are defined by a Connection
descriptor. The total number of defined field bits following a connection descriptor must equal the
number of pins listed in the descriptor.
The syntax for the Field term (from Section 19.6.46) is described below.
Field(
RegionName,
AccessType,
LockRule,
UpdateRule
) {FieldUnitList}
Where:
// NameString=>OperationRegion
// AccessTypeKeyword
// LockRuleKeyword
// UpdateRuleKeyword – ignored
• RegionName specifies the operation region name previously declared.
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