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# GITS_MPIDR, Report ITS's affinity.

The GITS_MPIDR characteristics are:

## Purpose

Reports ITS's affinity when the vPE Table is shared with Redistributors.

## Configuration

This register is present only when GICv4.1 is implemented. Otherwise, direct accesses to GITS_MPIDR are RES0.

A copy of this register is provided for each ITS.

When GITS_TYPER.SVPET==0, this register is RES0.

## Attributes

GITS_MPIDR is a 32-bit register.

## Field descriptions

31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 22 | 21 | 20 | 19 | 18 | 17 | 16 | 15 | 14 | 13 | 12 | 11 | 10 | 9 | 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | 0
Aff3 | Aff2 | Aff1 | RES0

#### Aff3, bits [31:24]

The Affinity level 3 value for the ITS.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

#### Aff2, bits [23:16]

The Affinity level 2 value for the ITS.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

#### Aff1, bits [15:8]

The Affinity level 1 value for the ITS.

This field has an IMPLEMENTATION DEFINED value.

Access to this field is RO.

#### Bits [7:0]

Reserved, RES0.

## Accessing GITS_MPIDR

#### GITS_MPIDR can be accessed through the memory-mapped interfaces:

Component | Offset
--- | ---
GIC ITS control | 0x0018

Accesses on this interface are RO.

AArch32 Registers | AArch64 Registers | AArch32 Instructions | AArch64 Instructions | Index by Encoding | External Registers | External Registers by Offset | Registers by Functional Group | Proprietary Notice

26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6

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