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 <m...@ellerman.id.au>
Cc: Benjamin Herrenschmidt <b...@kernel.crashing.org>
Cc: Paul Mackerras <pau...@samba.org>
Cc: Sukadev Bhattiprolu <suka...@linux.vnet.ibm.com>
Cc: Anshuman Khandual <khand...@linux.vnet.ibm.com>
Cc: Stephane Eranian <eran...@google.com>
Signed-off-by: Madhavan Srinivasan <ma...@linux.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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