/*
 * Copyright (C) 2018 Rob Clark <robclark@freedesktop.org>
 *
 * 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 <robclark@freedesktop.org>
 */

#ifndef FREEDRENO_PERFCNTR_H_
#define FREEDRENO_PERFCNTR_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;
};


enum fd_perfcntr_type {
	FD_PERFCNTR_TYPE_UINT64,
	FD_PERFCNTR_TYPE_UINT,
	FD_PERFCNTR_TYPE_FLOAT,
	FD_PERFCNTR_TYPE_PERCENTAGE,
	FD_PERFCNTR_TYPE_BYTES,
	FD_PERFCNTR_TYPE_MICROSECONDS,
	FD_PERFCNTR_TYPE_HZ,
	FD_PERFCNTR_TYPE_DBM,
	FD_PERFCNTR_TYPE_TEMPERATURE,
	FD_PERFCNTR_TYPE_VOLTS,
	FD_PERFCNTR_TYPE_AMPS,
	FD_PERFCNTR_TYPE_WATTS,
};

/* Whether an average value per frame or a cumulative value should be
 * displayed.
 */
enum fd_perfcntr_result_type {
	FD_PERFCNTR_RESULT_TYPE_AVERAGE,
	FD_PERFCNTR_RESULT_TYPE_CUMULATIVE,
};


/* 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 fd_perfcntr_type query_type;
	enum fd_perfcntr_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;
};

const struct fd_perfcntr_group *fd_perfcntrs(unsigned gpu_id, unsigned *count);

#define COUNTER(_sel, _lo, _hi) {  \
	.select_reg = REG(_sel),       \
	.counter_reg_lo = REG(_lo),    \
	.counter_reg_hi = REG(_hi),    \
}

#define COUNTER2(_sel, _lo, _hi, _en, _clr) { \
	.select_reg     = REG(_sel),  \
	.counter_reg_lo = REG(_lo),   \
	.counter_reg_hi = REG(_hi),   \
	.enable         = REG(_en),   \
	.clear          = REG(_clr),  \
}

#define COUNTABLE(_selector, _query_type, _result_type) {            \
	.name        = #_selector,                                       \
	.selector    = _selector,                                        \
	.query_type  = FD_PERFCNTR_TYPE_ ## _query_type,                 \
	.result_type = FD_PERFCNTR_RESULT_TYPE_ ## _result_type,         \
}

#define GROUP(_name, _counters, _countables) {   \
	.name           = _name,                     \
	.num_counters   = ARRAY_SIZE(_counters),     \
	.counters       = _counters,                 \
	.num_countables = ARRAY_SIZE(_countables),   \
	.countables     = _countables,               \
}

#endif /* FREEDRENO_PERFCNTR_H_ */