GTS AXI Streaming Intel® FPGA IP for PCI Express* User Guide

ID 813754
Date 5/15/2024
Public

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6.11. VF Error Flag Interface

When SR-IOV is enabled, the GTS AXI Streaming IP provides a passage for the HIP's VF Error Flag Interface to application logic. In the absence of AER and Error Message Generation support for VF in the HIP, the generation of VF's Non-Fatal Error messages relies on the user application logic. It is up to the user application logic to generate appropriate PCIe* error messages when specific error conditions occur (as indicated by this interface).

Note: VF Non-Fatal errors reported through this interface have their error status logged in the HIP registers already. This interface exists when SR-IOV is enabled only. N/A to PCIe* device type is Root Port.
Table 48.  VF Error Flag Interface
Signal Name Direction Endpoint (EP)/Root Port (RP)/TLP Bypass (BP) Clock Domain Description
p0_ss_app_vf_err_poisonedwrreq_s0 Output EP p0_axi_lite_clk

Indicates a Poisoned Write Request is received.

x8 instance has s0 and s1. x4 instance has s0 only.

p0_ss_app_vf_err_poisonedcompl_s0 Output EP p0_axi_lite_clk

Indicates a Poisoned Completion Request is received.

x8 instance has s0 and s1. x4 instance has s0 only.

p0_ss_app_vf_err_ur_postedreq_s0 Output EP p0_axi_lite_clk

Indicates a Posted UR Request is received.

x8 instance has s0 and s1. x4 instance has s0 only.

p0_ss_app_vf_err_ca_postedreq_s0 Output EP p0_axi_lite_clk

Indicates a Posted CA Request is received.

x8 instance has s0 and s1. x4 instance has s0 only.

p0_ss_app_vf_err_vf_num_s0 [10:0] Output EP p0_axi_lite_clk

Indicates the VF number for which the error is detected.

x8 instance has s0 and s1. x4 instance has s0 only.

p0_ss_app_vf_err_func_num_s0[2:0] Output EP p0_axi_lite_clk

Indicates the physical function number associated with the VF that has the error.

x8 instance has s0 and s1. x4 instance has s0 only.

p0_ss_app_vf_err_overflow Output EP p0_axi_lite_clk

Indicates a VF error FIFO overflow and a loss of an error report.

The overflow happens when coreclkout_hip is slower than the default value.

If coreclkout_hip is running at the default frequency, the overflow does not happen.

p0_app_ss_sent_vfnonfatalmsg Input EP p0_axi_lite_clk

Indicates the user application sent a non-fatal error message in response to an error detected.

p0_app_ss_vfnonfatalmsg_vf_num[10:0] Input EP p0_axi_lite_clk

Indicates the VF number for which the error message was generated.

This bus is valid when user_sent_vfnonfatalmsg_s0_i is high.

p0_app_ss_vfnonfatalmsg_func_num[2:0] Input EP p0_axi_lite_clk

Indicates the PF number associated with the VF with the error.

This bus is valid when user_sent_vfnonfatalmsg_s0_i is high.

p0_ss_app_vfnonfatalmsg_ready Output EP p0_axi_lite_clk

CSB endpoint may be in progress of servicing another message, unable to grant this master immediately.

Value 0 indicates input change triggered CSB message is pending CSB Arbiter. New value should be hold.

p#_user_vfnonfatalmsg_ready_o = 1 when interface is ready to accept new value.