freedreno: batch query support (perfcounters)

Core infrastructure for performance counters, using gallium's batch
query interface (to support AMD_performance_monitor).

Signed-off-by: Rob Clark <[email protected]>

1 files changed, 72 insertions, 0 deletions

diff --git a/src/gallium/drivers/freedreno/freedreno_perfcntr.h b/src/gallium/drivers/freedreno/freedreno_perfcntr.h
new file mode 100644
index 00000000000..79759307a34
--- /dev/null
+++ b/src/gallium/drivers/freedreno/freedreno_perfcntr.h
@@ -0,0 +1,72 @@
+/*
+ * Copyright (C) 2018 Rob Clark <[email protected]>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ * Authors:
+ *    Rob Clark <[email protected]>
+ */
+
+#ifndef FREEDRENO_PERFCNTR_H_
+#define FREEDRENO_PERFCNTR_H_
+
+#include "pipe/p_defines.h"
+
+/*
+ * Mapping very closely to the AMD_performance_monitor extension, adreno has
+ * groups of performance counters where each group has N counters, which can
+ * select from M different countables (things that can be counted), where
+ * generally M > N.
+ */
+
+/* Describes a single counter: */
+struct fd_perfcntr_counter {
+	/* offset of the select register to choose what to count: */
+	unsigned select_reg;
+	/* offset of the lo/hi 32b to read current counter value: */
+	unsigned counter_reg_lo;
+	unsigned counter_reg_hi;
+	/* Optional, most counters don't have enable/clear registers: */
+	unsigned enable;
+	unsigned clear;
+};
+
+/* Describes a single countable: */
+struct fd_perfcntr_countable {
+	const char *name;
+	/* selector register enum value to select this countable: */
+	unsigned selector;
+
+	/* description of the countable: */
+	enum pipe_driver_query_type query_type;
+	enum pipe_driver_query_result_type result_type;
+};
+
+/* Describes an entire counter group: */
+struct fd_perfcntr_group {
+	const char *name;
+	unsigned num_counters;
+	const struct fd_perfcntr_counter *counters;
+	unsigned num_countables;
+	const struct fd_perfcntr_countable *countables;
+};
+
+
+#endif /* FREEDRENO_PERFCNTR_H_ */