linux-kernel - [PATCH v8 2/7] powerpc/powernv: Add OPAL support for Nest PMU

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Date:	Tue, 23 Feb 2016 09:16:33 +0530
From:	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org
Cc:	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Paul Mackerras <paulus@...ba.org>,
	Anton Blanchard <anton@...ba.org>,
	Daniel Axtens <dja@...ens.net>,
	Stephane Eranian <eranian@...gle.com>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Subject: [PATCH v8 2/7] powerpc/powernv: Add OPAL support for Nest PMU

Nest Counters can be configured via PORE Engine and OPAL
provides an interface to start/stop it.

Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Anton Blanchard <anton@...ba.org>
Cc: Daniel Axtens <dja@...ens.net>
Cc: Stephane Eranian <eranian@...gle.com>
Cc: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
---
OPAL side patches are posted in the skiboot mailing.

 arch/powerpc/include/asm/opal-api.h            | 3 ++-
 arch/powerpc/include/asm/opal.h                | 3 +++
 arch/powerpc/platforms/powernv/opal-wrappers.S | 1 +
 3 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/arch/powerpc/include/asm/opal-api.h b/arch/powerpc/include/asm/opal-api.h
index f8faaaeeca1e..1845af7917a4 100644
--- a/arch/powerpc/include/asm/opal-api.h
+++ b/arch/powerpc/include/asm/opal-api.h
@@ -158,7 +158,8 @@
 #define OPAL_LEDS_SET_INDICATOR			115
 #define OPAL_CEC_REBOOT2			116
 #define OPAL_CONSOLE_FLUSH			117
-#define OPAL_LAST				117
+#define OPAL_NEST_COUNTERS_CONTROL		118
+#define OPAL_LAST				118
 
 /* Device tree flags */
 
diff --git a/arch/powerpc/include/asm/opal.h b/arch/powerpc/include/asm/opal.h
index 07a99e638449..6556e2a2141c 100644
--- a/arch/powerpc/include/asm/opal.h
+++ b/arch/powerpc/include/asm/opal.h
@@ -210,6 +210,9 @@ int64_t opal_flash_write(uint64_t id, uint64_t offset, uint64_t buf,
 int64_t opal_flash_erase(uint64_t id, uint64_t offset, uint64_t size,
 		uint64_t token);
 
+int64_t opal_nest_counters_control(uint64_t mode, uint64_t value1,
+		uint64_t value2, uint64_t value3);
+
 /* 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 e45b88a5d7e0..193fed741a53 100644
--- a/arch/powerpc/platforms/powernv/opal-wrappers.S
+++ b/arch/powerpc/platforms/powernv/opal-wrappers.S
@@ -302,3 +302,4 @@ OPAL_CALL(opal_prd_msg,				OPAL_PRD_MSG);
 OPAL_CALL(opal_leds_get_ind,			OPAL_LEDS_GET_INDICATOR);
 OPAL_CALL(opal_leds_set_ind,			OPAL_LEDS_SET_INDICATOR);
 OPAL_CALL(opal_console_flush,			OPAL_CONSOLE_FLUSH);
+OPAL_CALL(opal_nest_counters_control,		OPAL_NEST_COUNTERS_CONTROL);
-- 
1.9.1