Hello!
I have noticed the following inconsistency in ACPI spec 5.1.
7.3.2 System \_Sx states
States:
Return Value:
A Package containing an Integer containing register values for sleeping
It goes on to specify Table 7-221 System State Package
which describes a byte array in terms of byte length/byte offsets.
In practice, I see that implementations define \_Sx
as a package containing 4 integers.
Here's an example package generated by IASL:
52: Name(_S4, Package(0x04) {
53: 0x2,
54: 0x2,
55: Zero,
56: Zero
57: })
00000091: 08 5F 53 34 5F ......... "._S4_"
00000096: 12 08 04 0A 02 0A 02 00 "........"
0000009E: 00 ..................... "."
In other words, there are 4 integer values, and these are
not at offsets specified by the spec.
Suggested corrected wording:
Return Value:
A Package containing a list of 4 Integers containing register values for
sleeping
and update Table 7-221 System State Package
as follows:
Type Description
Integer Value for PM1a_CNT.SLP_TYP register to enter this system state.
On
HW-reduced
platforms, this is the HW-reduced Sleep Type value for
SLEEP_CONTROL_REG.SLP_TYP.
Integer Value for PM1b_CNT.SLP_TYP register to enter this system
state. To enter any
given state, OSPM must write the PM1a_CNT.SLP_TYP register
before the
PM1b_CNT.SLP_TYP register. On HW-reduced platforms, this value
is
ignored.
Integer Reserved. This value is ignored by the OSPM.
Integer Reserved. This value is ignored by the OSPM.
--
MST
