PMINTEN

This is a collection of Intel®’ IA32® Software Developer's Manuals (URL of the day) and AMD' AMD64 Architecture Programmer's Manual together with the related specifications, application notes, white papers, and change logs. The collection aims to keep all available revisions. It was originally created by Michal Necasek, see OS/2 Museum.

If you have a public document, related to the IA32® specifications and missing from the collection, please mail it to me. The content of this URL and all sub-ULRs is available for convenient bulk download by rsync x86docs password "" (empty).

PMINTEN, Performance Monitors Interrupt Enable register

Purpose

Enables the generation of interrupt requests on overflows from the Cycle Count Register, PMCCNTR_EL0, and the event counters PMEVCNTR<n>_EL0.

Configuration

External register PMINTEN bits [63:0] are architecturally mapped to AArch64 System register PMINTENSET_EL1[63:0].

External register PMINTEN bits [63:0] are architecturally mapped to AArch64 System register PMINTENCLR_EL1[63:0].

External register PMINTEN bits [31:0] are architecturally mapped to AArch32 System register PMINTENCLR[31:0].

External register PMINTEN bits [31:0] are architecturally mapped to AArch32 System register PMINTENSET[31:0].

This register is present only when FEAT_PMUv3_EXT64 is implemented. Otherwise, direct accesses to PMINTEN are RES0.

Attributes

Field descriptions

Bits [63:33]

F0, bit [32]
When FEAT_PMUv3_ICNTR is implemented:

Interrupt request on unsigned overflow of PMICNTR_EL0 enable.

F0	Meaning
0b0	Interrupt request on unsigned overflow of PMICNTR_EL0 disabled.
0b1	Interrupt request on unsigned overflow of PMICNTR_EL0 enabled.

The reset behavior of this field is:

On a Warm reset, this field resets to '0'.

Otherwise:

C, bit [31]

PMCCNTR_EL0 unsigned overflow interrupt request enable bit. Possible values are:

C	Meaning
0b0	The cycle counter overflow interrupt request is disabled.
0b1	The cycle counter overflow interrupt request is enabled.

The reset behavior of this field is:

On a Cold reset, when FEAT_PMUv3_EXTPMN is implemented, this field resets to an architecturally UNKNOWN value.
On a Warm reset, when FEAT_PMUv3_EXTPMN is not implemented, this field resets to an architecturally UNKNOWN value.

P<m>, bit [m], for m = 30 to 0

Event counter unsigned overflow interrupt request enable bit for PMEVCNTR<m>_EL0.

P<m>	Meaning
0b0	The PMEVCNTR<m>_EL0 event counter interrupt request is disabled.
0b1	The PMEVCNTR<m>_EL0 event counter interrupt request is enabled.

The reset behavior of this field is:

On a Cold reset, when FEAT_PMUv3_EXTPMN is implemented, this field resets to an architecturally UNKNOWN value.
On a Warm reset, when FEAT_PMUv3_EXTPMN is not implemented, this field resets to an architecturally UNKNOWN value.

Accessing this field has the following behavior:

When m >= NUM_PMU_COUNTERS, access to this field is RAZ/WI.
Access to this field is RAZ/WI if all the following are true:
- FEAT_PMUv3_EXTPMN is implemented.
- m >= UInt(EffectiveEPMN()).
- !IsMostSecureAccess(addrdesc).
Otherwise, access to this field is RW.

Accessing PMINTEN

Accesses to this register use the following encodings:

Accessible at offset 0xC50 from PMU

When DoubleLockStatus(), or !IsCorePowered(), or !AllowExternalPMUAccess(addrdesc), accesses to this register generate an error response.
When (FEAT_PMUv3_EXTPMN is not implemented, or !IsMostSecureAccess(addrdesc), or PMCCR().OSLO == 0) and OSLockStatus(), accesses to this register generate an error response.
Otherwise, accesses to this register are RW.

63	62	61	60	59	58	57	56	55	54	53	52	51	50	49	48	47	46	45	44	43	42	41	40	39	38	37	36	35	34	33	32
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
RES0																															F0
C	P30	P29	P28	P27	P26	P25	P24	P23	P22	P21	P20	P19	P18	P17	P16	P15	P14	P13	P12	P11	P10	P9	P8	P7	P6	P5	P4	P3	P2	P1	P0

PMINTEN, Performance Monitors Interrupt Enable register

Purpose

Configuration

Attributes

Field descriptions

Bits [63:33]

F0, bit [32]When FEAT_PMUv3_ICNTR is implemented:

Otherwise:

C, bit [31]

P<m>, bit [m], for m = 30 to 0

Accessing PMINTEN

F0, bit [32]
When FEAT_PMUv3_ICNTR is implemented: