Hi Fred, what is this made against of? It does not apply on the master. Thanks,
On 10/09/2019 01:45, Frederic Barrat wrote: > This is the linux part of the work to use the PCI hotplug framework to > control an opencapi card so that it can be reset and re-read after > flashing a new FPGA image. I had posted it earlier as an RFC and this > version is mostly similar, with just some minor editing. > > It needs support in skiboot: > http://patchwork.ozlabs.org/project/skiboot/list/?series=129724 > On an old skiboot, it will do nothing. > > A virtual PCI slot is created for the opencapi adapter, and its state > can be controlled through the pnv-php hotplug driver: > > echo 0|1 > /sys/bus/pci/slots/OPENCAPI-<...>/power > > Note that the power to the card is not really turned off, as the card > needs to stay on to be flashed with a new image. Instead the card is > in reset. > > The first part of the series mostly deals with the pci/ioda state, as > the opencapi devices can now go away and the state needs to be cleaned > up. > > The second part is modifications to the PCI hotplug driver on powernv, > so that a virtual slot is created for the opencapi adapters found in > the device tree. > > > > Frederic Barrat (11): > powerpc/powernv/ioda: Fix ref count for devices with their own PE > powerpc/powernv/ioda: Protect PE list > powerpc/powernv/ioda: set up PE on opencapi device when enabling > powerpc/powernv/ioda: Release opencapi device > powerpc/powernv/ioda: Find opencapi slot for a device node > pci/hotplug/pnv-php: Remove erroneous warning > pci/hotplug/pnv-php: Improve error msg on power state change failure > pci/hotplug/pnv-php: Register opencapi slots > pci/hotplug/pnv-php: Relax check when disabling slot > pci/hotplug/pnv-php: Wrap warnings in macro > ocxl: Add PCI hotplug dependency to Kconfig > > arch/powerpc/include/asm/pnv-pci.h | 1 + > arch/powerpc/platforms/powernv/pci-ioda.c | 107 ++++++++++++++-------- > arch/powerpc/platforms/powernv/pci.c | 10 +- > drivers/misc/ocxl/Kconfig | 1 + > drivers/pci/hotplug/pnv_php.c | 82 ++++++++++------- > 5 files changed, 125 insertions(+), 76 deletions(-) > -- Alexey
