Thanks Alex for the detailed explanation. On 5/5/21 2:13 PM, Alex Williamson wrote: > I'm also assuming all SoCs integrating this GPU will provide a > _RST method, but we're also disabling SBR in this series to avoid the > only other generic reset option we'd have for this device. All the platforms/SoCs which contain these GPUs will provide ACPI/firmware with _RST method. > In the more general case, I'd expect that system firmware isn't going > to implement an _RST method for a pluggable slot, so we'll lookup the > ACPI handle, fail to find a _RST method and drop to the next option. > For a PCI/e slot, at best the _RST method might be included in the _PRR > scope rather than the device scope to indicate it affects the entire > slot. That could be something like the #PERST below or a warm reset. I > don't think we're enabling that here, are we? No, our_RST method will be included only in a device context (not _PRP).
