Patch adds the data structures and macros
needed for nest pmu support. "type" structure will
hold each nest unit and sub-unit information.
Signed-off-by: Madhavan Srinivasan <ma...@linux.vnet.ibm.com>
---
arch/powerpc/perf/uncore_pmu.h | 89 ++++++++++++++++++++++++++++++++++++++++++
1 file changed, 89 insertions(+)
create mode 100644 arch/powerpc/perf/uncore_pmu.h
diff --git a/arch/powerpc/perf/uncore_pmu.h b/arch/powerpc/perf/uncore_pmu.h
new file mode 100644
index 0000000..ba4b3f4
--- /dev/null
+++ b/arch/powerpc/perf/uncore_pmu.h
@@ -0,0 +1,89 @@
+/*
+ * Uncore Performance Monitor counter support.
+ *
+ * Derived from Intel's uncore framework
+ * written by: Liang,Kan
+ * Zheng, Yan
+ * Andi Keen
+ *
+ * Copyright Intel 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; under version
+ * 2 of the License.
+ */
+
+#include <linux/perf_event.h>
+#include <linux/cpumask.h>
+#include <linux/slab.h>
+#include <linux/of.h>
+#include <asm/prom.h>
+#include <asm/opal.h>
+#include <asm/cputhreads.h>
+
+/*
+ * Macros for pmu groups
+ */
+#define pmu_group attr_groups[0]
+#define format_group attr_groups[1]
+#define events_group attr_groups[2]
+
+/*
+ * uncore specific macros
+ */
+#define P8_MAX_CHIP 256
+#define MAX_PMU_NAME_LEN 128
+#define MAX_UNITS_SUPPORTED 16
+#define MAX_SUB_UNITS 8
+#define MAX_TYPE_EVENTS 16
+#define MAX_EVENTS_SUPPORTED 256
+
+/*
+ * Structure to hold event information for a
+ * uncore pmu type. Device-Tree contain events
+ * and memory offsets to access the counter for
+ * a gievn event. Some events will also carry
+ * unit and scale.
+ */
+struct ppc64_uncore_type_events {
+ int ev_offset[MAX_EVENTS_SUPPORTED];
+ const char *ev_name[MAX_EVENTS_SUPPORTED];
+ const char *ev_value[MAX_EVENTS_SUPPORTED];
+};
+
+/*
+ * Structure to hold per chip specific memory address
+ * information for uncore pmus, since uncore pmus are
+ * per-chip.
+ */
+struct ppc64_uncore_unit {
+ uint32_t chip_id;
+ uint64_t preg_base;
+ uint64_t vreg_base;
+ uint32_t size;
+};
+
+/*
+ * Structure for each uncore unit.
+ */
+struct ppc64_uncore_type {
+ const char *name;
+ int num_boxes;
+ struct pmu *pmu;
+ struct ppc64_uncore_pmu *pmus;
+ struct attribute **event_attrs;
+ const struct attribute_group *attr_groups[4];
+ struct ppc64_uncore_type_events event_arry[MAX_SUB_UNITS];
+};
+
+
+struct ppc64_uncore_pmu {
+ struct pmu pmu;
+ char name[MAX_PMU_NAME_LEN];
+ int pmu_idx;
+ struct ppc64_uncore_type *type;
+};
+
+struct ppc64_uncore_pmu *uncore_event_to_pmu(struct perf_event *event);
+extern int uncore_p8_init(void);
--
1.9.1
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