linux-kernel - [PATCH v1 1/9]powerpc/powernv: Data structure and macros definition

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Date:	Tue,  2 Jun 2015 21:29:30 +0530
From:	Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
To:	linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.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>,
	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>,
	Anshuman Khandual <khandual@...ux.vnet.ibm.com>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH v1 1/9]powerpc/powernv: Data structure and macros definition

Patch creates a new header file "nest-pmu.h" to add the data structures
and macros needed for the nest pmu support.

Cc: Michael Ellerman <mpe@...erman.id.au>
Cc: Benjamin Herrenschmidt <benh@...nel.crashing.org>
Cc: Paul Mackerras <paulus@...ba.org>
Cc: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Cc: Anshuman Khandual <khandual@...ux.vnet.ibm.com>
Cc: Stephane Eranian <eranian@...gle.com>
Signed-off-by: Madhavan Srinivasan <maddy@...ux.vnet.ibm.com>
---
 arch/powerpc/perf/nest-pmu.h | 55 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 arch/powerpc/perf/nest-pmu.h

diff --git a/arch/powerpc/perf/nest-pmu.h b/arch/powerpc/perf/nest-pmu.h
new file mode 100644
index 0000000..ed3f79f
--- /dev/null
+++ b/arch/powerpc/perf/nest-pmu.h
@@ -0,0 +1,55 @@
+/*
+ * Nest Performance Monitor counter support for POWER8 processors.
+ *
+ * Copyright 2015 Madhavan Srinivasan, IBM Corporation.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/perf_event.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <linux/io.h>
+#include <asm/opal.h>
+
+#define P8_MAX_CHIP		32
+#define MAX_PMU_NAME_LEN	256
+#define MAX_EVENTS_SUPPORTED    256
+#define P8_NEST_ENGINE_START	1
+#define P8_NEST_ENGINE_STOP	0
+#define P8_MAX_NEST_PMUS	32
+
+/*
+ * Structure to hold per chip specific memory address
+ * information for nest pmus. Nest Counter data are exported
+ * in per-chip HOMER region by the PORE Engine.
+ */
+struct perchip_nest_info {
+        uint32_t chip_id;
+        uint64_t pbase;
+        uint64_t vbase;
+        uint32_t size;
+};
+
+/*
+ * Place holder for nest pmu events and values.
+ */
+struct ppc64_nest_ima_events {
+        const char *ev_name;
+        const char *ev_value;
+};
+
+/*
+ * Device tree parser code detect nest pmu support
+ * and create new nest pmus. This structure will
+ * hold the pmu functions and attrs for each nest pmu and
+ * will be referenced at the time of pmu registering.
+ */
+struct nest_pmu {
+	struct pmu pmu;
+	const struct attribute_group *attr_groups[4];
+};
+
-- 
1.9.1

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