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

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

Document ID
Release Date
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