You copied the Doc URL to your clipboard.

ICV_HPPIR1_EL1, Interrupt Controller Virtual Highest Priority Pending Interrupt Register 1

The ICV_HPPIR1_EL1 characteristics are:

Purpose

Indicates the highest priority pending virtual Group 1 interrupt on the virtual CPU interface.

Configuration

AArch64 System register ICV_HPPIR1_EL1 performs the same function as AArch32 System register ICV_HPPIR1.

Attributes

ICV_HPPIR1_EL1 is a 64-bit register.

Field descriptions

The ICV_HPPIR1_EL1 bit assignments are:

6362616059585756555453525150494847464544434241403938373635343332
RES0
RES0INTID
313029282726252423222120191817161514131211109876543210

Bits [63:24]

Reserved, RES0.

INTID, bits [23:0]

The INTID of the highest priority pending virtual interrupt.

If the highest priority pending interrupt is not observable, this field contains a special INTID to indicate the reason. This special INTID can take the value 1023 only. See Special INTIDs, for more information.

This field has either 16 or 24 bits implemented. The number of implemented bits can be found in ICV_CTLR_EL1.IDbits. If only 16 bits are implemented, bits [23:16] of this register are RES0.

Accessing the ICV_HPPIR1_EL1

Accesses to this register use the following encodings:

MRS <Xt>, ICC_HPPIR1_EL1

op0op1CRnCRmop2
0b110b0000b11000b11000b010
if PSTATE.EL == EL0 then
    UNDEFINED;
elsif PSTATE.EL == EL1 then
    if ICC_SRE_EL1.SRE == '0' then
        AArch64.SystemAccessTrap(EL1, 0x18);
    elsif EL2Enabled() && !ELUsingAArch32(EL2) && ICH_HCR_EL2.TALL1 == '1' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif EL2Enabled() && !ELUsingAArch32(EL2) && HCR_EL2.IMO == '1' then
        return ICV_HPPIR1_EL1;
    elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.IRQ == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return ICC_HPPIR1_EL1;
elsif PSTATE.EL == EL2 then
    if ICC_SRE_EL2.SRE == '0' then
        AArch64.SystemAccessTrap(EL2, 0x18);
    elsif HaveEL(EL3) && !ELUsingAArch32(EL3) && SCR_EL3.IRQ == '1' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return ICC_HPPIR1_EL1;
elsif PSTATE.EL == EL3 then
    if ICC_SRE_EL3.SRE == '0' then
        AArch64.SystemAccessTrap(EL3, 0x18);
    else
        return ICC_HPPIR1_EL1;
              


Was this page helpful? Yes No