GICR_ICACTIVER<n>E, Interrupt Clear-Active Registers, n = 1 - 2

The GICR_ICACTIVER<n>E characteristics are:

Purpose

Removes the active state from the corresponding PPI.

Configuration

This register is present only when GICv3.1 is implemented. Otherwise, direct accesses to GICR_ICACTIVER<n>E are RES0.

A copy of this register is provided for each Redistributor.

Attributes

GICR_ICACTIVER<n>E is a 32-bit register.

Field descriptions

313029282726252423222120191817161514131211109876543210
Clear_active_bit31Clear_active_bit30Clear_active_bit29Clear_active_bit28Clear_active_bit27Clear_active_bit26Clear_active_bit25Clear_active_bit24Clear_active_bit23Clear_active_bit22Clear_active_bit21Clear_active_bit20Clear_active_bit19Clear_active_bit18Clear_active_bit17Clear_active_bit16Clear_active_bit15Clear_active_bit14Clear_active_bit13Clear_active_bit12Clear_active_bit11Clear_active_bit10Clear_active_bit9Clear_active_bit8Clear_active_bit7Clear_active_bit6Clear_active_bit5Clear_active_bit4Clear_active_bit3Clear_active_bit2Clear_active_bit1Clear_active_bit0

Clear_active_bit<x>, bit [x], for x = 31 to 0

For the extended PPIs, removes the active state to interrupt number x. Reads and writes have the following behavior:

Clear_active_bit<x>Meaning
0b0

If read, indicates that the corresponding interrupt is not active, and is not active and pending.

If written, has no effect.

0b1

If read, indicates that the corresponding interrupt is active, or is active and pending.

If written, deactivates the corresponding interrupt, if the interrupt is active. If the interrupt is already deactivated, the write has no effect.

The reset behavior of this field is:

Additional information

For INTID m, when DIV and MOD are the integer division and modulo operations:

Accessing GICR_ICACTIVER<n>E

When affinity routing is not enabled for the Security state of an interrupt in GICR_ICACTIVER<n>E, the corresponding bit is RES0.

When GICD_CTLR.DS==0, bits corresponding to Secure PPIs are RAZ/WI to Non-secure accesses.

Bits corresponding to unimplemented interrupts are RAZ/WI.

GICR_ICACTIVER<n>E can be accessed through the memory-mapped interfaces:

ComponentFrameOffsetInstance
GIC RedistributorSGI_base0x0380 + (4 * n)GICR_ICACTIVER<n>E

Accesses on this interface are RW.


26/03/2024 09:49; 67c0ae5282a7629ba0ea0ba7267b43cd4f7939f6

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