I need to count the number of PCIe correctable and uncorrectable errors detected in Linux. How and where do I start? Is a Linux device driver an appropriate approach to count such errors? If a driver is appropriate, then what type of driver? pcie driver? pseudo device driver? extend existing driver that incurred the error? I really don't know. I know PCIe has a device error/status register as part of the PCIe Capability structure; is there a way to listen on this register -- that is, is it possible to register a callback that is invoked when the register is updated? if so, how? Code/examples much appreciated. THank you!

Linux: accessing PCIe status registers

I need to count the number of PCIe correctable and uncorrectable errors detected in Linux. How and where do I start?

Is a Linux device driver an appropriate approach to count such errors?
If a driver is appropriate, then what type of driver? pcie driver? pseudo device driver? extend existing driver that incurred the error? I really don't know.
I know PCIe has a device error/status register as part of the PCIe Capability structure; is there a way to listen on this register -- that is, is it possible to register a callback that is invoked when the register is updated? if so, how?

Code/examples much appreciated.

THank you!