Article ID: 000083532 Content Type: Troubleshooting Last Reviewed: 08/13/2015

Why does my Altera Hard IP for PCI Express hang on Txs read in root port modes?

Environment

    Quartus® II Subscription Edition
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Description Due to a problem in the Quartus® II 15.0 software, in root port mode, reads via the Txs interface might hang (not complete) following several read access through the CRA interface.
Resolution

This behavior is caused by the Avalon-MM bridge not increasing the credits consumed counters for TLPs generated from the CRA interface.

The workaround is:

  1. Install Quartus 14.1.
  2. Go to the Quartus 14.1 installation directory and find the following:
    1. <version>/ip/altera/altera_pcie/altera_pcie_av_hip_avmm/avalon_mm_128
    2. <version>/ip/altera/altera_pcie/altera_pcie_av_hip_avmm/avalon_stif 
  3. Copy all files to the same folders of your Quartus 15.0 installation, overwriting all the existing files. Then reopen Quartus/Qsys 15.0 and re-generate the Hard IP.
  4. Please note the above directories are used for both Arria 10 and Arria V devices.

This is scheduled to be fixed in a future release of the Quartus software.

Related Products

This article applies to 7 products

Intel® Arria® 10 GT FPGA
Intel® Arria® 10 GX FPGA
Intel® Arria® 10 SX SoC FPGA
Arria® V GT FPGA
Arria® V GX FPGA
Arria® V ST SoC FPGA
Arria® V SX SoC FPGA

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