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[v3,0/2] Fully enable AER

Message ID 20220119092200.35823-1-sr@denx.de (mailing list archive)
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Series Fully enable AER | expand

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Stefan Roese Jan. 19, 2022, 9:21 a.m. UTC 
While working on AER support on a ZynqMP based system, which has some
PCIe Device connected via a PCIe switch, problems with AER enabling in
the Device Control registers of all PCIe devices but the Root Port. In
fact, only the Root Port has AER enabled right now. This patch set now
fixes this problem by first fixing the AER enabing in the
interconnected PCIe switches between the Root Port and the PCIe
devices and in a 2nd patch, also enabling AER in the PCIe Endpoints.

Please note that these changes are quite invasive, as with these
patches applied, AER now will be enabled in the Device Control
registers of all available PCIe Endpoints, which currently is not the
case.

Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <helgaas@kernel.org>
Cc: Pali Rohár <pali@kernel.org>
Cc: Bharat Kumar Gogada <bharat.kumar.gogada@xilinx.com>
Cc: Michal Simek <michal.simek@xilinx.com>
Cc: Yao Hongbo <yaohongbo@linux.alibaba.com>
Cc: Naveen Naidu <naveennaidu479@gmail.com>

Stefan Roese (2):
  PCI/portdrv: Don't disable AER reporting in
    get_port_device_capability()
  PCI/AER: Enable AER on all PCIe devices supporting it

 drivers/pci/pcie/aer.c          | 4 ++++
 drivers/pci/pcie/portdrv_core.c | 9 +--------
 2 files changed, 5 insertions(+), 8 deletions(-)