/*
 * Copyright (C) 2013 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>
 */

#include "pipe/p_state.h"
#include "util/u_memory.h"

#include "freedreno_query.h"
#include "freedreno_query_sw.h"
#include "freedreno_query_hw.h"
#include "freedreno_context.h"
#include "freedreno_util.h"

/*
 * Pipe Query interface:
 */

static struct pipe_query *
fd_create_query(struct pipe_context *pctx, unsigned query_type, unsigned index)
{
	struct fd_context *ctx = fd_context(pctx);
	struct fd_query *q = NULL;

	if (ctx->create_query)
		q = ctx->create_query(ctx, query_type, index);
	if (!q)
		q = fd_sw_create_query(ctx, query_type, index);

	return (struct pipe_query *) q;
}

static void
fd_destroy_query(struct pipe_context *pctx, struct pipe_query *pq)
{
	struct fd_query *q = fd_query(pq);
	q->funcs->destroy_query(fd_context(pctx), q);
}

static bool
fd_begin_query(struct pipe_context *pctx, struct pipe_query *pq)
{
	struct fd_query *q = fd_query(pq);
	bool ret;

	if (q->active)
		return false;

	ret = q->funcs->begin_query(fd_context(pctx), q);
	q->active = ret;

	return ret;
}

static bool
fd_end_query(struct pipe_context *pctx, struct pipe_query *pq)
{
	struct fd_query *q = fd_query(pq);

	/* there are a couple special cases, which don't have
	 * a matching ->begin_query():
	 */
	if (skip_begin_query(q->type) && !q->active)
		fd_begin_query(pctx, pq);

	if (!q->active)
		return false;

	q->funcs->end_query(fd_context(pctx), q);
	q->active = false;

	return true;
}

static bool
fd_get_query_result(struct pipe_context *pctx, struct pipe_query *pq,
		bool wait, union pipe_query_result *result)
{
	struct fd_query *q = fd_query(pq);

	if (q->active)
		return false;

	util_query_clear_result(result, q->type);

	return q->funcs->get_query_result(fd_context(pctx), q, wait, result);
}

static void
fd_render_condition(struct pipe_context *pctx, struct pipe_query *pq,
					bool condition, enum pipe_render_cond_flag mode)
{
	struct fd_context *ctx = fd_context(pctx);
	ctx->cond_query = pq;
	ctx->cond_cond = condition;
	ctx->cond_mode = mode;
}

#define _Q(_name, _query_type, _type, _result_type) {                \
	.name        = _name,                                            \
	.query_type  = _query_type,                                      \
	.type        = PIPE_DRIVER_QUERY_TYPE_ ## _type,                 \
	.result_type = PIPE_DRIVER_QUERY_RESULT_TYPE_ ## _result_type,   \
	.group_id    = ~(unsigned)0,                                     \
}

#define FQ(_name, _query_type, _type, _result_type) \
	_Q(_name, FD_QUERY_ ## _query_type, _type, _result_type)

#define PQ(_name, _query_type, _type, _result_type) \
	_Q(_name, PIPE_QUERY_ ## _query_type, _type, _result_type)

static const struct pipe_driver_query_info sw_query_list[] = {
	FQ("draw-calls", DRAW_CALLS, UINT64, AVERAGE),
	FQ("batches", BATCH_TOTAL, UINT64, AVERAGE),
	FQ("batches-sysmem", BATCH_SYSMEM, UINT64, AVERAGE),
	FQ("batches-gmem", BATCH_GMEM, UINT64, AVERAGE),
	FQ("batches-nondraw", BATCH_NONDRAW, UINT64, AVERAGE),
	FQ("restores", BATCH_RESTORE, UINT64, AVERAGE),
	PQ("prims-emitted", PRIMITIVES_EMITTED, UINT64, AVERAGE),
	FQ("staging", STAGING_UPLOADS, UINT64, AVERAGE),
	FQ("shadow", SHADOW_UPLOADS, UINT64, AVERAGE),
	FQ("vsregs", VS_REGS, FLOAT, AVERAGE),
	FQ("fsregs", FS_REGS, FLOAT, AVERAGE),
};

static int
fd_get_driver_query_info(struct pipe_screen *pscreen,
		unsigned index, struct pipe_driver_query_info *info)
{
	struct fd_screen *screen = fd_screen(pscreen);

	if (!info)
		return ARRAY_SIZE(sw_query_list) + screen->num_perfcntr_queries;

	if (index >= ARRAY_SIZE(sw_query_list)) {
		index -= ARRAY_SIZE(sw_query_list);
		if (index >= screen->num_perfcntr_queries)
			return 0;
		*info = screen->perfcntr_queries[index];
		return 1;
	}

	*info = sw_query_list[index];
	return 1;
}

static int
fd_get_driver_query_group_info(struct pipe_screen *pscreen, unsigned index,
		struct pipe_driver_query_group_info *info)
{
	struct fd_screen *screen = fd_screen(pscreen);

	if (!info)
		return screen->num_perfcntr_groups;

	if (index >= screen->num_perfcntr_groups)
		return 0;

	const struct fd_perfcntr_group *g = &screen->perfcntr_groups[index];

	info->name = g->name;
	info->max_active_queries = g->num_counters;
	info->num_queries = g->num_countables;

	return 1;
}

static void
fd_set_active_query_state(struct pipe_context *pipe, bool enable)
{
}

static void
setup_perfcntr_query_info(struct fd_screen *screen)
{
	unsigned num_queries = 0;

	for (unsigned i = 0; i < screen->num_perfcntr_groups; i++)
		num_queries += screen->perfcntr_groups[i].num_countables;

	screen->perfcntr_queries =
		calloc(num_queries, sizeof(screen->perfcntr_queries[0]));
	screen->num_perfcntr_queries = num_queries;

	unsigned idx = 0;
	for (unsigned i = 0; i < screen->num_perfcntr_groups; i++) {
		const struct fd_perfcntr_group *g = &screen->perfcntr_groups[i];
		for (unsigned j = 0; j < g->num_countables; j++) {
			struct pipe_driver_query_info *info =
				&screen->perfcntr_queries[idx];
			const struct fd_perfcntr_countable *c =
				&g->countables[j];

			info->name = c->name;
			info->query_type = FD_QUERY_FIRST_PERFCNTR + idx;
			info->type = c->query_type;
			info->result_type = c->result_type;
			info->group_id = i;
			info->flags = PIPE_DRIVER_QUERY_FLAG_BATCH;

			idx++;
		}
	}
}

void
fd_query_screen_init(struct pipe_screen *pscreen)
{
	pscreen->get_driver_query_info = fd_get_driver_query_info;
	pscreen->get_driver_query_group_info = fd_get_driver_query_group_info;
	setup_perfcntr_query_info(fd_screen(pscreen));
}

void
fd_query_context_init(struct pipe_context *pctx)
{
	pctx->create_query = fd_create_query;
	pctx->destroy_query = fd_destroy_query;
	pctx->begin_query = fd_begin_query;
	pctx->end_query = fd_end_query;
	pctx->get_query_result = fd_get_query_result;
	pctx->set_active_query_state = fd_set_active_query_state;
	pctx->render_condition = fd_render_condition;
}
