Root Port Error FIFO Read Register (Offset 0x154) - 3.0 English

AXI Bridge for PCI Express Gen3 Subsystem Product Guide (PG194)

Document ID
PG194
Release Date
2022-11-16
Version
3.0 English

The Root Port Error FIFO Read Register reads from this location return queued error (Correctable/Non-fatal/Fatal) messages. Data from each read follows the format shown in the following table. For EP configurations, read returns zero.

Reads are non-destructive. Removing the message from the FIFO requires a write. The write value is ignored.

Table 1. Root Port Error FIFO Read Register
Bits Name Core Access Reset Value Description
15:0 Requester ID RWC 0 Requester ID belonging to the requester of the error message.
17:16 Error Type RWC 0 Indicates the type of the error.

00b: Correctable

01b: Non-Fatal

10b: Fatal

11b: Reserved

18 Error Valid RWC 0 Indicates whether read succeeded.

1b: Success

0b: No message to read

31:19 Reserved RO 0 Reserved