On 08.06.21 07:48, Amey Narkhede wrote: Hi,
PCI and PCIe devices may support a number of possible reset mechanisms for example Function Level Reset (FLR) provided via Advanced Feature or PCIe capabilities, Power Management reset, bus reset, or device specific reset. Currently the PCI subsystem creates a policy prioritizing these reset methods which provides neither visibility nor control to userspace.
Since I've got a current use case for that - could you perhaps tell more about the whole pci device reset mechanisms ? In my case I've got a board that wires reset lines to the soc's gpios. Not sure how exactly to qualify this, but I guess it would count as a bus wide reset. Now the big question for me is how to implement that in a board specific platform driver (which already does setup of gpios and other attached devices), so we can reset the card in slot X in a generic way. Any help highly appreciated. --mtx -- --- Hinweis: unverschlüsselte E-Mails können leicht abgehört und manipuliert werden ! Für eine vertrauliche Kommunikation senden Sie bitte ihren GPG/PGP-Schlüssel zu. --- Enrico Weigelt, metux IT consult Free software and Linux embedded engineering info@xxxxxxxxx -- +49-151-27565287
