Module Name: src
Committed By: jruoho
Date: Tue Feb 22 16:05:31 UTC 2011
Modified Files:
src/sys/dev/acpi: acpi_cpu_cstate.c
Log Message:
After a closer examination, remove entirely the check that was considered in
the revision 1.38. As noted in the specification (ACPI 4.0, p. 314):
The platform must expose a _CST object for either all or none of its
processors. If the _CST object exists, OSPM uses the C state information
specified in the _CST object in lieu of P_LVL2 and P_LVL3 registers
defined in P_BLK and the P_LVLx_LAT values defined in the FADT.
The _CST is seemingly valid on the system under consideration:
Name (_CST, Package (0x02)
{
0x01,
Package (0x04)
{
ResourceTemplate ()
{
Register (SystemIO,
0x08, // Bit Width
0x00, // Bit Offset
0x000000000000F800, // Address
0x01, // Access Size
)
},
0x02,
0x0064,
0x00000000
}
})
The check was also unnecessary in the sense that ACPI doesn't use bus_space(9).
To generate a diff of this commit:
cvs rdiff -u -r1.39 -r1.40 src/sys/dev/acpi/acpi_cpu_cstate.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
