tree c64d4825954a9a0e0696f25dbace9fd4f4fd051d
parent 7e7dc66adcf490a619bc3c7763a8cebadfba73e3
author Madhavan Srinivasan <maddy@linux.vnet.ibm.com> 1500413792 +0530
committer Michael Ellerman <mpe@ellerman.id.au> 1500901222 +1000

powerpc/powernv: Add IMC OPAL APIs

In-Memory Collection (IMC) counters are performance monitoring
infrastructure. These counters need special sequence of SCOMs to
init/start/stop which is handled by OPAL. And OPAL provides three APIs
to init and control these IMC engines.

OPAL API documentation:
  https://github.com/open-power/skiboot/blob/master/doc/opal-api/opal-imc-counters.rst

Patch updates the kernel side powernv platform code to support the new
OPAL APIs

Signed-off-by: Hemant Kumar <hemant@linux.vnet.ibm.com>
Signed-off-by: Anju T Sudhakar <anju@linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>