[RFC PATCH 4/7]powerpc/powernv: Add OPAL support for Nest pmu

[Madhavan Srinivasan <maddy@linux.vnet.ibm.com>]

Nest Counters can be configured via PORE Engine and OPAL
provides an interface call to it. PORE Engine also does the 
work of moving the counter data to memory.  

Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
---
 arch/powerpc/include/asm/opal.h                | 3 +++
 arch/powerpc/platforms/powernv/opal-wrappers.S | 1 +
 2 files changed, 4 insertions(+)

diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 9ee0a30..8ac586b 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -169,6 +169,7 @@ struct opal_sg_list {
 #define OPAL_IPMI_SEND				107
 #define OPAL_IPMI_RECV				108
 #define OPAL_I2C_REQUEST			109
+#define OPAL_UNCORE_CONTROL			114
 
 /* Device tree flags */
 
@@ -932,6 +933,8 @@ int64_t opal_ipmi_recv(uint64_t interface, struct opal_ipmi_msg *msg,
 int64_t opal_i2c_request(uint64_t async_token, uint32_t bus_id,
 			 struct opal_i2c_request *oreq);
 
+int64_t opal_uncore_control(uint32_t value);
+
 /* Internal functions */
 extern int early_init_dt_scan_opal(unsigned long node, const char *uname,
 				   int depth, void *data);
diff --git a/arch/powerpc/platforms/powernv/opal-wrappers.S b/arch/powerpc/platforms/powernv/opal-wrappers.S
index 0509bca..df709c3 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -292,3 +292,4 @@ OPAL_CALL(opal_tpo_read,			OPAL_READ_TPO);
 OPAL_CALL(opal_ipmi_send,			OPAL_IPMI_SEND);
 OPAL_CALL(opal_ipmi_recv,			OPAL_IPMI_RECV);
 OPAL_CALL(opal_i2c_request,			OPAL_I2C_REQUEST);
+OPAL_CALL(opal_uncore_control,			OPAL_UNCORE_CONTROL);
-- 
1.9.1