[Skiboot] [RESEND PATCH v1 00/11] OPAL support for Nest instrumentation

[Madhavan Srinivasan]

On Monday 06 July 2015 01:28 AM, Benjamin Herrenschmidt wrote:
> On Sun, 2015-07-05 at 22:25 +0530, Madhavan Srinivasan wrote:
>> Patchset adds support for Nest instrumentation services
>> in OPAL. Power8 has Nest instrumentation enabled with which
>> per-chip metrics like memory bandwidth, Powerbus, X link and
>> A link metrics can be obtained.
> Why is it all in ibm-fsp/firenze ? This is P8 chip specific, not
> FSP machine specific, right ? There is no reason this cannot be
> made to work on Open Power machines is there ?
>

Ben yes. This is not FSP specific. But need to understand
how to get the catalog lid (81e00610) added to pnor build
incase of openpower system. I am working on this
and I will get that as a follow up patch to this series.
I added ibm-fsp since i have tested the changes only on a
tuleta box.

Maddy

>> Patchset does two things,1) At the time of boot, it detects
>> the Nest instrumentation feature and created device-tree
>> entries to pass the information to kernel. Secondly, it
>> implements an opal call to control the PORE Thread Scheduler
>> (PTS) from kernel to start/stop Nest PMU counter collection.
>> Patchset tested only in IBM Tuleta boxes.
>>
>> Change log v1:
>>
>> 1) Removed "uncore" naming and replaced it with "nest/ima" in all the
>>   file and function.
>> 2) Added a DT entry to pass DIMM rate information
>> 3) Added nest instrumentation detection code and catalog parser function
>> 4) Added support functions for different nest units.
>>
>> Kindly let me know your comments and feedback.
>>
>> Madhavan Srinivasan (11):
>>  ibm-fsp/firenze: nest data structure definitions
>>  ibm-fsp/firenze: nest feature detection
>>  ibm-fsp/firenze: DT entry for per-chip HOMER offset
>>  ibm-fsp/firenze: DT entry for DIMM rate
>>  ibm-fsp/firenze: Nest unit parser function
>>  ibm-fsp/firenze: Nest MCS unit support
>>  ibm-fsp/firenze: Nest PowerBus unit support
>>  ibm-fsp/firenze: Nest Alink unit support
>>  ibm-fsp/firenze: Nest Xlink unit support
>>  ibm-fsp/firenze: Add OPAL call to enable/disable Nest pmu
>>  ibm-fsp/firenze: Add init function call to involve Nest support
>>
>>  core/init.c        |   4 +
>>  hw/Makefile.inc    |   2 +-
>>  hw/fsp/fsp.c       |   3 +
>>  hw/nest.c          | 451 +++++++++++++++++++++++++++++++++++++++++++++++++++++
>>  include/mem-map.h  |   2 +
>>  include/nest.h     | 244 +++++++++++++++++++++++++++++
>>  include/opal-api.h |   3 +-
>>  include/platform.h |   1 +
>>  include/types.h    |   1 +
>>  9 files changed, 709 insertions(+), 2 deletions(-)
>>  create mode 100644 hw/nest.c
>>  create mode 100644 include/nest.h
>>
>