Advanced Configuration and Power Interface Specification

ACPI Software Programming Model
Example:
Device (DEV1)
{
Mutex (MTX1, 0)
Name (RES1, ResourceTemplate ()
{
I2cSerialBus (0x0400, DeviceInitiated, 0x00001000,
AddressingMode10Bit, "\\_SB.DEV1",
0, ResourceConsumer, I2C1)
})
}
Name (_DLM, Package (1)
{
Package (2)
{
MTX1,
RES1
}
})
Device (DEV2)
{
Mutex (MTX2, 0)
Mutex (MTX3, 0)
Name (_DLM, Package (2)
{
Package (2)
{
\DEV2.MTX2,
ResourceTemplate ()
{
I2cSerialBus (0x0400, DeviceInitiated, 0x00001000,
AddressingMode10Bit, "\\_SB.DEV2",
0, ResourceConsumer, I2C2)
}
},
Package (1) // Optional resource not needed
{
\DEV2.MTX3
}
})
}
5.8 System Configuration Objects
5.8.1 _PIC Method
The \_PIC optional method is used to report to the BIOS the current interrupt model used by the OS.
This control method returns nothing. The argument passed into the method signifies the interrupt
model OSPM has chosen, PIC mode, APIC mode, or SAPIC mode. Notice that calling this method is
optional for OSPM. If the method is never called, the BIOS must assume PIC mode. It is important
that the BIOS save the value passed in by OSPM for later use during wake operations.
Arguments: (1)
Arg0 – An Integer containing a code for the current interrupt model:
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