FUJITSU Implementation Supplement Fujitsu SPARC64 V - Manual (Page 185)

174 SPARC JPS1 Implementation Supplement: Fujitsu SPARC64 V • Release 1.0, 1 July 2002
P.7 Restrainable Errors
This section describes the registers— ASI_ASYNC_FAULT_STATUS ,
ASI_ASYNC_FAULT_ADDR_D1 , and ASI_ASYNC_FAULT_ADDR_U2 —that define the
restrainable errors and explains how software handles these errors.
P.7.1 ASI_ASYNC_FAULT_STATUS (ASI_AFSR)
The ASI_ASYNC_FAULT_STATUS register holds the detected restrainable error
sticky bits. TABLE P-15 describes the fields of this register. In the table, the prefixes in
the name field have the following meaning:
■ DG_ Degradation error
■ CE_ Correctable Error
■ UE_ Uncorrectable Error
Notes about the Prio_ xx columns in TABLE P-15 :
■ Prio_D1 column — Indicates the ASI_AFAR_D1 recording priority for each error
shown in TABLE P-15 row as follows:
■
If the Prio_D1 column for the error shown in the table row is blank, the error is
never recorded into ASI_AFAR_D1 .
■
Otherwise, the Prio_D1 column for the error shown in the table row indicates
the ASI_AFAR_D1 recording priority, as follows. Let P_D1 be the Prio_D1
column value for the error E1 . Then:
Upon detection of the error E1 , if P_D1 > ASI_AFAR_D1.CONTENTS , the error
E1 is recorded into ASI_AFAR_D1 and ASI_AFAR_D1.CONTENTS is set to
P_D1 .
Upon detection of the error E1 , if P_D1
≤
ASI_AFAR_D1.CONTENTS , the error
E1 is not recorded into ASI_AFAR_D1 and ASI_AFAR_D1 is unchanged.
■ Prio_U2 column — Indicates the ASI_AFAR_U2 recording priority for each error
shown in the TABLE P-15 row as follows:
[1] Register name: ASI_ASYNC_FAULT_STATUS ( ASI_AFSR )
[2] ASI: 4C
16
[3] VA: 00
16
[4] Error checking: None
[5] Format & function: See TABLE P-15
[6] Initial value at reset: Hard POR: All fields in ASI_AFSR are set to 0.
Other resets: Values in ASI_AFSR are unchanged.