[PATCH 00/11] opencapi: enable card reset and link retraining

[Alexey Kardashevskiy]

On 24/09/2019 16:39, Frederic Barrat wrote:
> 
> 
> Le 24/09/2019 à 06:24, Alexey Kardashevskiy a écrit :
>> Hi Fred,
>>
>> what is this made against of? It does not apply on the master. Thanks,
> 
> It applies on v5.3. And I can see there's a conflict with the current
> state in the merge window. I'll resubmit.


Not really necessary, just mention the exact sha1 or tag in the cover
letter next time. Thanks,



> 
>   Fred
> 
> 
> 
>> 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