GICR_TYPER, Redistributor Type Register

The GICR_TYPER characteristics are:

Purpose

Provides information about the configuration of this Redistributor.

Configuration

A copy of this register is provided for each Redistributor.

Attributes

GICR_TYPER is a 64-bit register.

Field descriptions

The GICR_TYPER bit assignments are:

Affinity_Value, bits [63:32]

The identity of the PE associated with this Redistributor.

Bits [63:56] provide Aff3, the Affinity level 3 value for the Redistributor.

Bits [55:48] provide Aff2, the Affinity level 2 value for the Redistributor.

Bits [47:40] provide Aff1, the Affinity level 1 value for the Redistributor.

Bits [39:32] provide Aff0, the Affinity level 0 value for the Redistributor.

PPInum, bits [31:27]

When GICv3.1 is implemented:

The value derived from this field specifies the maximum PPI INTID that a GIC implementation can support. An implementation might not implement all PPIs up to this maximum.

All other values are reserved.

Otherwise:

Reserved, RES0.

VSGI, bit [26]

When GICv4.1 is implemented:

Indicates whether vSGIs are supported.

Otherwise:

Reserved, RES0.

CommonLPIAff, bits [25:24]

The affinity level at which Redistributors share an LPI Configuration table.

Processor_Number, bits [23:8]

A unique identifier for the PE. When GITS_TYPER.PTA == 0, an ITS uses this field to identify the interrupt target.

When affinity routing is disabled for a Security state, this field indicates which GICD_ITARGETSR<n> corresponds to this Redistributor.

RVPEID, bit [7]

When GICv4.1 is implemented:

Indicates how the resident vPE is specified.

Otherwise:

Reserved, RES0.

MPAM, bit [6]

When GICv3.1 is implemented:

MPAM

Otherwise:

Reserved, RES0.

DPGS, bit [5]

Sets support for GICR_CTLR.DPG* bits.

Last, bit [4]

Indicates whether this Redistributor is the highest-numbered Redistributor in a series of contiguous Redistributor pages.

DirectLPI, bit [3]

Indicates whether this Redistributor supports direct injection of LPIs.

Dirty, bit [2]

Controls the functionality of GICR_VPENDBASER.Dirty.

When GICR_TYPER.VLPIS == 0, this field is RES0.

VLPIS, bit [1]

Indicates whether the GIC implementation supports virtual LPIs and the direct injection of virtual LPIs.

PLPIS, bit [0]

Indicates whether the GIC implementation supports physical LPIs.

Accessing the GICR_TYPER

GICR_TYPER can be accessed through the memory-mapped interfaces:

This interface is accessible as follows:

• When GICD_CTLR.DS == 0b0 accesses to this register are RO.
• When IsAccessSecure() accesses to this register are RO.
• When !IsAccessSecure() accesses to this register are RO.