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

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Date:	Wed, 11 Mar 2015 18:37:10 +0530
From:	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
To:	mpe@...erman.id.au, benh@...nel.crashing.org, paulus@...ba.org
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org,
	linuxppc-dev@...abs.org, eranian@...gle.com, ak@...ux.intel.com,
	srivatsa@....edu, Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
Subject: [RFC PATCH 4/7]powerpc/powernv: Add OPAL support for Nest pmu

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@...ux.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

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