Madhavan Srinivasan 28a5db0061 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>
2017-07-24 23:00:22 +10:00
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