rte_dmadev_pmd.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2021 HiSilicon Limited
 */

#ifndef RTE_DMADEV_PMD_H
#define RTE_DMADEV_PMD_H

#include <rte_dev.h>

#include "rte_dmadev.h"

#ifdef __cplusplus
extern "C" {
#endif

struct rte_dma_dev;

typedef int (*rte_dma_info_get_t)(const struct rte_dma_dev *dev,
                  struct rte_dma_info *dev_info,
                  uint32_t info_sz);

typedef int (*rte_dma_configure_t)(struct rte_dma_dev *dev,
                   const struct rte_dma_conf *dev_conf,
                   uint32_t conf_sz);

typedef int (*rte_dma_start_t)(struct rte_dma_dev *dev);

typedef int (*rte_dma_stop_t)(struct rte_dma_dev *dev);

typedef int (*rte_dma_close_t)(struct rte_dma_dev *dev);

typedef int (*rte_dma_vchan_setup_t)(struct rte_dma_dev *dev, uint16_t vchan,
                const struct rte_dma_vchan_conf *conf,
                uint32_t conf_sz);

typedef int (*rte_dma_stats_get_t)(const struct rte_dma_dev *dev,
            uint16_t vchan, struct rte_dma_stats *stats,
            uint32_t stats_sz);

typedef int (*rte_dma_stats_reset_t)(struct rte_dma_dev *dev, uint16_t vchan);

typedef int (*rte_dma_vchan_status_t)(const struct rte_dma_dev *dev, uint16_t vchan,
        enum rte_dma_vchan_status *status);

typedef int (*rte_dma_dump_t)(const struct rte_dma_dev *dev, FILE *f);

struct rte_dma_dev_ops {
    rte_dma_info_get_t         dev_info_get;
    rte_dma_configure_t        dev_configure;
    rte_dma_start_t            dev_start;
    rte_dma_stop_t             dev_stop;
    rte_dma_close_t            dev_close;

    rte_dma_vchan_setup_t      vchan_setup;

    rte_dma_stats_get_t        stats_get;
    rte_dma_stats_reset_t      stats_reset;

    rte_dma_vchan_status_t     vchan_status;
    rte_dma_dump_t             dev_dump;
};

struct rte_dma_dev_data {
    char dev_name[RTE_DEV_NAME_MAX_LEN]; 
    int16_t dev_id; 
    int16_t numa_node; 
    void *dev_private; 
    struct rte_dma_conf dev_conf; 
    __extension__
    uint8_t dev_started : 1; 
    uint64_t reserved[2]; 
} __rte_cache_aligned;

enum rte_dma_dev_state {
    RTE_DMA_DEV_UNUSED = 0, 
    RTE_DMA_DEV_REGISTERED,
    RTE_DMA_DEV_READY,
};

struct rte_dma_dev {
    struct rte_device *device;
    struct rte_dma_dev_data *data; 
    struct rte_dma_fp_object *fp_obj;
    const struct rte_dma_dev_ops *dev_ops;
    enum rte_dma_dev_state state; 
    uint64_t reserved[2]; 
} __rte_cache_aligned;

__rte_internal
struct rte_dma_dev *rte_dma_pmd_allocate(const char *name, int numa_node,
                     size_t private_data_size);

__rte_internal
int rte_dma_pmd_release(const char *name);

#ifdef __cplusplus
}
#endif

#endif /* RTE_DMADEV_PMD_H */