/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2017 Intel Corporation. All rights reserved.
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef _SCHEDULER_PMD_PRIVATE_H
#define _SCHEDULER_PMD_PRIVATE_H

#include "rte_cryptodev_scheduler.h"

#define PER_SLAVE_BUFF_SIZE			(256)

#define CS_LOG_ERR(fmt, args...)					\
	RTE_LOG(ERR, CRYPTODEV, "[%s] %s() line %u: " fmt "\n",		\
		RTE_STR(CRYPTODEV_NAME_SCHEDULER_PMD),			\
		__func__, __LINE__, ## args)

#ifdef RTE_LIBRTE_CRYPTO_SCHEDULER_DEBUG
#define CS_LOG_INFO(fmt, args...)					\
	RTE_LOG(INFO, CRYPTODEV, "[%s] %s() line %u: " fmt "\n",	\
		RTE_STR(CRYPTODEV_NAME_SCHEDULER_PMD),			\
		__func__, __LINE__, ## args)

#define CS_LOG_DBG(fmt, args...)					\
	RTE_LOG(DEBUG, CRYPTODEV, "[%s] %s() line %u: " fmt "\n",	\
		RTE_STR(CRYPTODEV_NAME_SCHEDULER_PMD),			\
		__func__, __LINE__, ## args)
#else
#define CS_LOG_INFO(fmt, args...)
#define CS_LOG_DBG(fmt, args...)
#endif

struct scheduler_slave {
	uint8_t dev_id;
	uint16_t qp_id;
	uint32_t nb_inflight_cops;

	enum rte_cryptodev_type dev_type;
};

struct scheduler_ctx {
	void *private_ctx;
	/**< private scheduler context pointer */

	struct rte_cryptodev_capabilities *capabilities;
	uint32_t nb_capabilities;

	uint32_t max_nb_queue_pairs;

	struct scheduler_slave slaves[RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES];
	uint32_t nb_slaves;

	enum rte_cryptodev_scheduler_mode mode;

	struct rte_cryptodev_scheduler_ops ops;

	uint8_t reordering_enabled;

	char name[RTE_CRYPTODEV_SCHEDULER_NAME_MAX_LEN];
	char description[RTE_CRYPTODEV_SCHEDULER_DESC_MAX_LEN];

	char *init_slave_names[RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES];
	int nb_init_slaves;
} __rte_cache_aligned;

struct scheduler_qp_ctx {
	void *private_qp_ctx;

	uint32_t max_nb_objs;

	struct rte_ring *order_ring;
	uint32_t seqn;
} __rte_cache_aligned;

struct scheduler_session {
	struct rte_cryptodev_sym_session *sessions[
			RTE_CRYPTODEV_SCHEDULER_MAX_NB_SLAVES];
};

static inline uint16_t __attribute__((always_inline))
get_max_enqueue_order_count(struct rte_ring *order_ring, uint16_t nb_ops)
{
	uint32_t count = rte_ring_free_count(order_ring);

	return count > nb_ops ? nb_ops : count;
}

static inline void __attribute__((always_inline))
scheduler_order_insert(struct rte_ring *order_ring,
		struct rte_crypto_op **ops, uint16_t nb_ops)
{
	rte_ring_sp_enqueue_burst(order_ring, (void **)ops, nb_ops, NULL);
}

#define SCHEDULER_GET_RING_OBJ(order_ring, pos, op) do {            \
	struct rte_crypto_op **ring = (void *)&order_ring[1];     \
	op = ring[(order_ring->cons.head + pos) & order_ring->mask]; \
} while (0)

static inline uint16_t __attribute__((always_inline))
scheduler_order_drain(struct rte_ring *order_ring,
		struct rte_crypto_op **ops, uint16_t nb_ops)
{
	struct rte_crypto_op *op;
	uint32_t nb_objs = rte_ring_count(order_ring);
	uint32_t nb_ops_to_deq = 0;
	uint32_t nb_ops_deqd = 0;

	if (nb_objs > nb_ops)
		nb_objs = nb_ops;

	while (nb_ops_to_deq < nb_objs) {
		SCHEDULER_GET_RING_OBJ(order_ring, nb_ops_to_deq, op);
		if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
			break;
		nb_ops_to_deq++;
	}

	if (nb_ops_to_deq)
		nb_ops_deqd = rte_ring_sc_dequeue_bulk(order_ring,
				(void **)ops, nb_ops_to_deq, NULL);

	return nb_ops_deqd;
}
/** device specific operations function pointer structure */
extern struct rte_cryptodev_ops *rte_crypto_scheduler_pmd_ops;

#endif /* _SCHEDULER_PMD_PRIVATE_H */
