GITS_PARTIDR, Set PARTID and PMG Register
The GITS_PARTIDR characteristics are:
Purpose
Sets the PARTID and PMG values used for memory accesses by the ITS.
Configuration
This register is present only when GICv3.1 is implemented. Otherwise, direct accesses to GITS_PARTIDR are RES0.
A copy of this register is provided for each ITS.
When GITS_TYPER.MPAM==0, this register is RES0.
Attributes
GITS_PARTIDR is a 32-bit register.
Field descriptions
The GITS_PARTIDR bit assignments are:
Bits [31:24]
Reserved, RES0.
PMG, bits [23:16]
PMG value used when ITS accesses memory.
It is IMPLEMENTATION DEFINED whether bits not needed to represent PMG values in the range 0 to PMG_MAX are stateful or RES0.
PARTID, bits [15:0]
PARTID value used when ITS accesses memory.
It is IMPLEMENTATION DEFINED whether bits not needed to represent PARTID values in the range 0 to PARTID_MAX are stateful or RES0.
Accessing the GITS_PARTIDR
GITS_PARTIDR can be accessed through the memory-mapped interfaces:
Component | Offset |
---|---|
GIC ITS control | 0x0014 |
This interface is accessible as follows:
- When GICD_CTLR.DS == 0b0 accesses to this register are RW.
- When IsAccessSecure() accesses to this register are RW.
- When !IsAccessSecure() accesses to this register are RW.