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ERR<n>PFGF, Pseudo-fault Generation Feature Register, n = 0 - 65534

The ERR<n>PFGF characteristics are:

Purpose

Defines which common architecturally-defined fault generation features are implemented.

Configuration

This register is present only when error record <n> is implemented, the node implements the RAS Common Fault Injection Model Extension (ERR<n>FR.INJ != 0b00) and error record <n> is the first error record owned by a node. Otherwise, direct accesses to ERR<n>PFGF are RES0.

ERR<n>FR describes the features implemented by the node.

Attributes

ERR<n>PFGF is a 64-bit register.

Field descriptions

The ERR<n>PFGF bit assignments are:

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
RES0
RES0	R	SYN	RES0																MV	AV	PN	ER	CI	CE		DE	UEO	UER	UEU	UC	OF
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

Bits [63:31]

Reserved, RES0.

R, bit [30]

Restartable. Support for Error Generation Counter restart mode.

R	Meaning
0b0	The node does not support this feature.
0b1	Feature controllable.

SYN, bit [29]

Syndrome. Fault syndrome injection.

SYN	Meaning
0b0	When an injected error is recorded, the node sets ERR<n>STATUS.{IERR, SERR} to IMPLEMENTATION DEFINED values. ERR<n>STATUS.{IERR, SERR} are UNKNOWN when ERR<n>STATUS.V == 0b0.
0b1	When an injected error is recorded, the node does not update the ERR<n>STATUS.{IERR, SERR} fields. ERR<n>STATUS.{IERR, SERR} are writable when ERR<n>STATUS.V == 0b0.

Note

If ERR<n>PFGF.SYN == 0b1, software can write specific values into the ERR<n>STATUS.{IERR, SERR} fields when setting up a fault injection event. The sets of values that can be written to these fields is IMPLEMENTATION DEFINED.

Bits [28:13]

Reserved, RES0.

MV, bit [12]

Miscellaneous syndrome.

Additional syndrome injection. Defines whether software can control all or part of the syndrome recorded in the ERR<n>MISC<m> registers when an injected error is recorded.

It is IMPLEMENTATION DEFINED which syndrome fields in ERR<n>MISC<m> this refers to, as some fields might always be recorded by an error. For example, a Corrected Error counter.

MV	Meaning
0b0	When an injected error is recorded, the node might record IMPLEMENTATION DEFINED additional syndrome in ERR<n>MISC<m>. If any syndrome is recorded in ERR<n>MISC<m>, then ERR<n>STATUS.MV is set to 0b1.
0b1	When an injected error is recorded, the node does not update all the syndrome fields in the ERR<n>MISC<m> and does one of: The node does not update any fields in ERR<n>MISC<m> and sets ERR<n>STATUS.MV to ERR<n>PFGCTL.MV. The node records some syndrome in ERR<n>MISC<m> and sets ERR<n>STATUS.MV to 0b1. ERR<n>PFGCTL.MV is RAO. The syndrome fields that the node does not update are unchanged and are writable when ERR<n>STATUS.MV == 0b0.

Meaning

0b0

When an injected error is recorded, the node might record IMPLEMENTATION DEFINED additional syndrome in ERR<n>MISC<m>. If any syndrome is recorded in ERR<n>MISC<m>, then ERR<n>STATUS.MV is set to 0b1.

0b1

When an injected error is recorded, the node does not update all the syndrome fields in the ERR<n>MISC<m> and does one of:

The node does not update any fields in ERR<n>MISC<m> and sets ERR<n>STATUS.MV to ERR<n>PFGCTL.MV.
The node records some syndrome in ERR<n>MISC<m> and sets ERR<n>STATUS.MV to 0b1. ERR<n>PFGCTL.MV is RAO.

The syndrome fields that the node does not update are unchanged and are writable when ERR<n>STATUS.MV == 0b0.

Note

If ERR<n>PFGF.MV == 0b1, software can write specific values into the ERR<n>MISC<m> registers when setting up a fault injection event. The values that can be written to these registers are IMPLEMENTATION DEFINED.

AV, bit [11]

Address syndrome. Address syndrome injection.

AV	Meaning
0b0	When an injected error is recorded, the node either sets ERR<n>ADDR and ERR<n>STATUS.AV for the access, or leaves these unchanged.
0b1	When an injected error is recorded, the node does not update ERR<n>ADDR and does one of: Sets ERR<n>STATUS.AV to ERR<n>PFGCTL.AV. Sets ERR<n>STATUS.AV to 0b1. ERR<n>PFGCTL.AV is RAO. ERR<n>ADDR is writable when ERR<n>STATUS.AV == 0b0.

Meaning

0b0

When an injected error is recorded, the node either sets ERR<n>ADDR and ERR<n>STATUS.AV for the access, or leaves these unchanged.

0b1

When an injected error is recorded, the node does not update ERR<n>ADDR and does one of:

Sets ERR<n>STATUS.AV to ERR<n>PFGCTL.AV.
Sets ERR<n>STATUS.AV to 0b1. ERR<n>PFGCTL.AV is RAO.

ERR<n>ADDR is writable when ERR<n>STATUS.AV == 0b0.

Note

If ERR<n>PFGF.AV == 0b1, software can write a specific value into ERR<n>ADDR when setting up a fault injection event.

PN, bit [10]

Poison flag. Describes how the fault generation feature of the node sets the ERR<n>STATUS.PN status flag.

PN	Meaning
0b0	When an injected error is recorded, it is IMPLEMENTATION DEFINED whether the node sets ERR<n>STATUS.PN to 0b1.
0b1	When an injected error is recorded, ERR<n>STATUS.PN is set to ERR<n>PFGCTL.PN.

This behavior replaces the architecture-defined rules for setting the PN bit.

This bit reads-as-zero if the node does not support this flag.

ER, bit [9]

Error Reported flag. Describes how the fault generation feature of the node sets the ERR<n>STATUS.ER status flag.

ER	Meaning
0b0	When an injected error is recorded, the node sets ERR<n>STATUS.ER according to the architecture-defined rules for setting the ER bit.
0b1	When an injected error is recorded, ERR<n>STATUS.ER is set to ERR<n>PFGCTL.ER. This behavior replaces the architecture-defined rules for setting the ER bit.

This bit reads-as-zero if the node does not support this flag.

CI, bit [8]

Critical Error flag. Describes how the fault generation feature of the node sets the ERR<n>STATUS.CI status flag.

CI	Meaning
0b0	When an injected error is recorded, it is IMPLEMENTATION DEFINED whether the node sets ERR<n>STATUS.CI to 0b1.
0b1	When an injected error is recorded, ERR<n>STATUS.CI is set to ERR<n>PFGCTL.CI.

This behavior replaces the architecture-defined rules for setting the CI bit.

This bit reads-as-zero if the node does not support this flag.

CE, bits [7:6]

Corrected Error generation. Describes the types of Corrected Error that the fault generation feature of the node can generate.

CE	Meaning
0b00	The fault generation feature of the node cannot generate this type of error.
0b01	The fault generation feature of the node allows generation of a non-specific Corrected Error, that is, a Corrected Error that is recorded as ERR<n>STATUS.CE == 0b10.
0b11	The fault generation feature of the node allows generation of transient or persistent Corrected Errors, that is, Corrected Errors that are recorded as ERR<n>STATUS.CE == 0b01 and 0b11.

All other values are reserved.

If ERR<n>FR.FRX is 0b1 then ERR<n>FR.CE indicates whether the node supports this type of error.

This field reads-as-zeros if the node does not support this type of error.

DE, bit [5]

Deferred Error generation. Describes whether the fault generation feature of the node can generate this type of error.

DE	Meaning
0b0	The fault generation feature of the node cannot generate this type of error.
0b1	The fault generation feature of the node allows generation of this type of error.

If ERR<n>FR.FRX is 0b1 then ERR<n>FR.DE indicates whether the node supports this type of error.