f-stack/dpdk/drivers/common/qat/qat_qp.h

/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2018 Intel Corporation
 */
#ifndef _QAT_QP_H_
#define _QAT_QP_H_

#include "qat_common.h"
#include "adf_transport_access_macros.h"

#define QAT_CSR_HEAD_WRITE_THRESH 32U
/* number of requests to accumulate before writing head CSR */

#define QAT_QP_MIN_INFL_THRESHOLD	256

struct qat_pci_device;

/**
 * Structure associated with each queue.
 */
struct qat_queue {
	char		memz_name[RTE_MEMZONE_NAMESIZE];
	void		*base_addr;		/* Base address */
	rte_iova_t	base_phys_addr;		/* Queue physical address */
	uint32_t	head;			/* Shadow copy of the head */
	uint32_t	tail;			/* Shadow copy of the tail */
	uint32_t	modulo_mask;
	uint32_t	msg_size;
	uint32_t	queue_size;
	uint8_t		trailz;
	uint8_t		hw_bundle_number;
	uint8_t		hw_queue_number;
	/* HW queue aka ring offset on bundle */
	uint32_t	csr_head;		/* last written head value */
	uint32_t	csr_tail;		/* last written tail value */
	uint16_t	nb_processed_responses;
	/* number of responses processed since last CSR head write */
};

struct qat_qp {
	void			*mmap_bar_addr;
	struct qat_queue	tx_q;
	struct qat_queue	rx_q;
	struct qat_common_stats stats;
	struct rte_mempool *op_cookie_pool;
	void **op_cookies;
	uint32_t nb_descriptors;
	enum qat_device_gen qat_dev_gen;
	enum qat_service_type service_type;
	struct qat_pci_device *qat_dev;
	/**< qat device this qp is on */
	uint32_t enqueued;
	uint32_t dequeued __rte_aligned(4);
	uint16_t max_inflights;
	uint16_t min_enq_burst_threshold;
} __rte_cache_aligned;

/**
 * Structure with data needed for creation of queue pair.
 */
struct qat_qp_hw_data {
	enum qat_service_type service_type;
	uint8_t hw_bundle_num;
	uint8_t tx_ring_num;
	uint8_t rx_ring_num;
	uint16_t tx_msg_size;
	uint16_t rx_msg_size;
};

/**
 * Structure with data needed for creation of queue pair.
 */
struct qat_qp_config {
	const struct qat_qp_hw_data *hw;
	uint32_t nb_descriptors;
	uint32_t cookie_size;
	int socket_id;
	const char *service_str;
};

uint16_t
qat_enqueue_op_burst(void *qp, void **ops, uint16_t nb_ops);

uint16_t
qat_dequeue_op_burst(void *qp, void **ops, uint16_t nb_ops);

int
qat_qp_release(enum qat_device_gen qat_dev_gen, struct qat_qp **qp_addr);

int
qat_qp_setup(struct qat_pci_device *qat_dev,
		struct qat_qp **qp_addr, uint16_t queue_pair_id,
		struct qat_qp_config *qat_qp_conf);

int
qat_qps_per_service(struct qat_pci_device *qat_dev,
		enum qat_service_type service);

const struct qat_qp_hw_data *
qat_qp_get_hw_data(struct qat_pci_device *qat_dev,
		enum qat_service_type service, uint16_t qp_id);

int
qat_cq_get_fw_version(struct qat_qp *qp);

/* Needed for weak function*/
int
qat_comp_process_response(void **op __rte_unused, uint8_t *resp __rte_unused,
			  void *op_cookie __rte_unused,
			  uint64_t *dequeue_err_count __rte_unused);
int
qat_read_qp_config(struct qat_pci_device *qat_dev);

/**
 * Function prototypes for GENx specific queue pair operations.
 **/
typedef int (*qat_qp_rings_per_service_t)
		(struct qat_pci_device *, enum qat_service_type);

typedef void (*qat_qp_build_ring_base_t)(void *, struct qat_queue *);

typedef void (*qat_qp_adf_arb_enable_t)(const struct qat_queue *, void *,
		rte_spinlock_t *);

typedef void (*qat_qp_adf_arb_disable_t)(const struct qat_queue *, void *,
		rte_spinlock_t *);

typedef void (*qat_qp_adf_configure_queues_t)(struct qat_qp *);

typedef void (*qat_qp_csr_write_tail_t)(struct qat_qp *qp, struct qat_queue *q);

typedef void (*qat_qp_csr_write_head_t)(struct qat_qp *qp, struct qat_queue *q,
		uint32_t new_head);

typedef void (*qat_qp_csr_setup_t)(struct qat_pci_device*, void *,
		struct qat_qp *);

typedef const struct qat_qp_hw_data * (*qat_qp_get_hw_data_t)(
		struct qat_pci_device *dev, enum qat_service_type service_type,
		uint16_t qp_id);

struct qat_qp_hw_spec_funcs {
	qat_qp_rings_per_service_t	qat_qp_rings_per_service;
	qat_qp_build_ring_base_t	qat_qp_build_ring_base;
	qat_qp_adf_arb_enable_t		qat_qp_adf_arb_enable;
	qat_qp_adf_arb_disable_t	qat_qp_adf_arb_disable;
	qat_qp_adf_configure_queues_t	qat_qp_adf_configure_queues;
	qat_qp_csr_write_tail_t		qat_qp_csr_write_tail;
	qat_qp_csr_write_head_t		qat_qp_csr_write_head;
	qat_qp_csr_setup_t		qat_qp_csr_setup;
	qat_qp_get_hw_data_t		qat_qp_get_hw_data;
};

extern struct qat_qp_hw_spec_funcs*
	qat_qp_hw_spec[];

static inline void
txq_write_tail(enum qat_device_gen qat_dev_gen,
		struct qat_qp *qp, struct qat_queue *q)
{
	struct qat_qp_hw_spec_funcs *ops =
		qat_qp_hw_spec[qat_dev_gen];

	/*
	 * Pointer check should be done during
	 * initialization
	 */
	ops->qat_qp_csr_write_tail(qp, q);
}

#endif /* _QAT_QP_H_ */