/* SPDX-License-Identifier: BSD-3-Clause
 *
 *   Copyright 2016,2019 NXP
 *
 */

#ifndef _RTE_FSLMC_H_
#define _RTE_FSLMC_H_

/**
 * @file
 *
 * RTE FSLMC Bus Interface
 */

#ifdef __cplusplus
extern "C" {
#endif

#include <stdio.h>
#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#include <sys/queue.h>
#include <stdint.h>
#include <inttypes.h>
#include <linux/vfio.h>

#include <rte_debug.h>
#include <rte_interrupts.h>
#include <rte_dev.h>
#include <rte_bus.h>
#include <rte_tailq.h>
#include <rte_devargs.h>
#include <rte_mbuf.h>
#include <rte_mbuf_dyn.h>

#include <fslmc_vfio.h>

#define FSLMC_OBJECT_MAX_LEN 32   /**< Length of each device on bus */

#define DPAA2_INVALID_MBUF_SEQN        0

typedef uint32_t dpaa2_seqn_t;
extern int dpaa2_seqn_dynfield_offset;

/**
 * @warning
 * @b EXPERIMENTAL: this API may change without prior notice
 *
 * Read dpaa2 sequence number from mbuf.
 *
 * @param mbuf Structure to read from.
 * @return pointer to dpaa2 sequence number.
 */
__rte_experimental
static inline dpaa2_seqn_t *
dpaa2_seqn(struct rte_mbuf *mbuf)
{
        return RTE_MBUF_DYNFIELD(mbuf, dpaa2_seqn_dynfield_offset,
                dpaa2_seqn_t *);
}

/** Device driver supports link state interrupt */
#define RTE_DPAA2_DRV_INTR_LSC  0x0008

/** Device driver supports IOVA as VA */
#define RTE_DPAA2_DRV_IOVA_AS_VA 0X0040

struct rte_dpaa2_driver;

/* DPAA2 Device and Driver lists for FSLMC bus */
TAILQ_HEAD(rte_fslmc_device_list, rte_dpaa2_device);
TAILQ_HEAD(rte_fslmc_driver_list, rte_dpaa2_driver);

#define RTE_DEV_TO_FSLMC_CONST(ptr) \
        container_of(ptr, const struct rte_dpaa2_device, device)

extern struct rte_fslmc_bus rte_fslmc_bus;

enum rte_dpaa2_dev_type {
        /* Devices backed by DPDK driver */
        DPAA2_ETH,      /**< DPNI type device*/
        DPAA2_CRYPTO,   /**< DPSECI type device */
        DPAA2_CON,      /**< DPCONC type device */
        /* Devices not backed by a DPDK driver: DPIO, DPBP, DPCI, DPMCP */
        DPAA2_BPOOL,    /**< DPBP type device */
        DPAA2_IO,       /**< DPIO type device */
        DPAA2_CI,       /**< DPCI type device */
        DPAA2_MPORTAL,  /**< DPMCP type device */
        DPAA2_QDMA,     /**< DPDMAI type device */
        DPAA2_MUX,      /**< DPDMUX type device */
        DPAA2_DPRTC,    /**< DPRTC type device */
        /* Unknown device placeholder */
        DPAA2_UNKNOWN,
        DPAA2_DEVTYPE_MAX,
};

TAILQ_HEAD(rte_dpaa2_object_list, rte_dpaa2_object);

typedef int (*rte_dpaa2_obj_create_t)(int vdev_fd,
                                      struct vfio_device_info *obj_info,
                                      int object_id);

/**
 * A structure describing a DPAA2 object.
 */
struct rte_dpaa2_object {
        TAILQ_ENTRY(rte_dpaa2_object) next; /**< Next in list. */
        const char *name;                   /**< Name of Object. */
        enum rte_dpaa2_dev_type dev_type;   /**< Type of device */
        rte_dpaa2_obj_create_t create;
};

/**
 * A structure describing a DPAA2 device.
 */
struct rte_dpaa2_device {
        TAILQ_ENTRY(rte_dpaa2_device) next; /**< Next probed DPAA2 device. */
        struct rte_device device;           /**< Inherit core device */
        union {
                struct rte_eth_dev *eth_dev;        /**< ethernet device */
                struct rte_cryptodev *cryptodev;    /**< Crypto Device */
                struct rte_rawdev *rawdev;          /**< Raw Device */
        };
        enum rte_dpaa2_dev_type dev_type;   /**< Device Type */
        uint16_t object_id;                 /**< DPAA2 Object ID */
        struct rte_intr_handle intr_handle; /**< Interrupt handle */
        struct rte_dpaa2_driver *driver;    /**< Associated driver */
        char name[FSLMC_OBJECT_MAX_LEN];    /**< DPAA2 Object name*/
};

typedef int (*rte_dpaa2_probe_t)(struct rte_dpaa2_driver *dpaa2_drv,
                                 struct rte_dpaa2_device *dpaa2_dev);
typedef int (*rte_dpaa2_remove_t)(struct rte_dpaa2_device *dpaa2_dev);

/**
 * A structure describing a DPAA2 driver.
 */
struct rte_dpaa2_driver {
        TAILQ_ENTRY(rte_dpaa2_driver) next; /**< Next in list. */
        struct rte_driver driver;           /**< Inherit core driver. */
        struct rte_fslmc_bus *fslmc_bus;    /**< FSLMC bus reference */
        uint32_t drv_flags;                 /**< Flags for controlling device.*/
        enum rte_dpaa2_dev_type drv_type;   /**< Driver Type */
        rte_dpaa2_probe_t probe;
        rte_dpaa2_remove_t remove;
};

/*
 * FSLMC bus
 */
struct rte_fslmc_bus {
        struct rte_bus bus;     /**< Generic Bus object */
        struct rte_fslmc_device_list device_list;
                                /**< FSLMC DPAA2 Device list */
        struct rte_fslmc_driver_list driver_list;
                                /**< FSLMC DPAA2 Driver list */
        int device_count[DPAA2_DEVTYPE_MAX];
                                /**< Count of all devices scanned */
};

/**
 * Register a DPAA2 driver.
 *
 * @param driver
 *   A pointer to a rte_dpaa2_driver structure describing the driver
 *   to be registered.
 */
__rte_internal
void rte_fslmc_driver_register(struct rte_dpaa2_driver *driver);

/**
 * Unregister a DPAA2 driver.
 *
 * @param driver
 *   A pointer to a rte_dpaa2_driver structure describing the driver
 *   to be unregistered.
 */
__rte_internal
void rte_fslmc_driver_unregister(struct rte_dpaa2_driver *driver);

/** Helper for DPAA2 device registration from driver (eth, crypto) instance */
#define RTE_PMD_REGISTER_DPAA2(nm, dpaa2_drv) \
RTE_INIT(dpaa2initfn_ ##nm) \
{\
        (dpaa2_drv).driver.name = RTE_STR(nm);\
        rte_fslmc_driver_register(&dpaa2_drv); \
} \
RTE_PMD_EXPORT_NAME(nm, __COUNTER__)

/**
 * Register a DPAA2 MC Object driver.
 *
 * @param mc_object
 *   A pointer to a rte_dpaa_object structure describing the mc object
 *   to be registered.
 */
__rte_internal
void rte_fslmc_object_register(struct rte_dpaa2_object *object);

/**
 * Count of a particular type of DPAA2 device scanned on the bus.
 *
 * @param dev_type
 *   Type of device as rte_dpaa2_dev_type enumerator
 * @return
 *   >=0 for count; 0 indicates either no device of the said type scanned or
 *   invalid device type.
 */
__rte_internal
uint32_t rte_fslmc_get_device_count(enum rte_dpaa2_dev_type device_type);

/** Helper for DPAA2 object registration */
#define RTE_PMD_REGISTER_DPAA2_OBJECT(nm, dpaa2_obj) \
RTE_INIT(dpaa2objinitfn_ ##nm) \
{\
        (dpaa2_obj).name = RTE_STR(nm);\
        rte_fslmc_object_register(&dpaa2_obj); \
} \
RTE_PMD_EXPORT_NAME(nm, __COUNTER__)

#ifdef __cplusplus
}
#endif

#endif /* _RTE_FSLMC_H_ */