On Wed, Sep 06, 2023 at 03:36:40PM -0300, Antonio Terceiro wrote:
On Wed, Sep 06, 2023 at 01:49:16PM +0100, Robin Murphy wrote:
It's blowing up trying to access PCI I/O space, which has apparently ended up in the indirect access mechanism without that being configured correctly. That is definitely an issue down somewhere between the PCI layer and the system firmware. Does the system even have an I/O space window? Some arm64 machines don't. I guess we might not have got as far as probing a driver if the I/O BAR couldn't be assigned at all, but either way something's not gone right.
I'm pretty sure I saw reports of people using PCI GPUs on this machine, but I would need to confirm.
What info would I need to gather from the machine in order to figure this out?
Antonio, please see: https://community.amperecomputing.com/t/amd-gpus-on-the-altra-devkit-and-oth...
You have a quirky PCIe controller it seems. You'll have to go through the errata and then some.
Good Luck, Geraldo Nascimento