The GICD_ICACTIVER<n> characteristics are:
Deactivates the corresponding interrupt. These registers are used when saving and restoring GIC state.
Some or all RW fields of this register have defined reset values.
These registers are available in all GIC configurations. If GICD_CTLR.DS==0, these registers are Common.
The number of implemented GICD_ICACTIVER<n> registers is (GICD_TYPER.ITLinesNumber+1). Registers are numbered from 0.
GICD_ICACTIVER0 is Banked for each connected PE with GICR_TYPER.Processor_Number < 8.
Accessing GICD_ICACTIVER0 from a PE with GICR_TYPER.Processor_Number > 7 is CONSTRAINED UNPREDICTABLE:
GICD_ICACTIVER<n> is a 32-bit register.
The GICD_ICACTIVER<n> bit assignments are:
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 |
Clear_active_bit<x>, bit [x], for x = 0 to 31 |
Removes the active state from interrupt number 32n + 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. |
This field resets to 0.
For INTID m, when DIV and MOD are the integer division and modulo operations:
When affinity routing is enabled for the Security state of an interrupt, the bits corresponding to SGIs and PPIs in that Security state are RAZ/WI, and equivalent functionality for SGIs and PPIs is provided by GICR_ICACTIVER0.
Bits corresponding to unimplemented interrupts are RAZ/WI.
If GICD_CTLR.DS==0, unless the GICD_NSACR<n> registers permit Non-secure software to control Group 0 and Secure Group 1 interrupts, any bits that correspond to Group 0 or Secure Group 1 interrupts are accessible only by Secure accesses and are RAZ/WI to Non-secure accesses.
Component | Offset | Instance |
---|---|---|
GIC Distributor | 0x0380 + 4n | GICD_ICACTIVER<n> |
This interface is accessible as follows:
13/12/2018 16:42; 6379d01c197f1d40720d32d0f84c419c9187c009
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