--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017-2018 Intel Corporation
+ */
+
+#ifndef _RTE_COMPRESSDEV_PMD_H_
+#define _RTE_COMPRESSDEV_PMD_H_
+
+/** @file
+ * RTE comp PMD APIs
+ *
+ * @note
+ * These APIs are for comp PMDs only and user applications should not call
+ * them directly.
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <string.h>
+
+#include <rte_dev.h>
+#include <rte_common.h>
+
+#include "rte_compressdev.h"
+#include "rte_compressdev_internal.h"
+
+#define RTE_COMPRESSDEV_PMD_NAME_ARG ("name")
+#define RTE_COMPRESSDEV_PMD_SOCKET_ID_ARG ("socket_id")
+
+static const char * const compressdev_pmd_valid_params[] = {
+ RTE_COMPRESSDEV_PMD_NAME_ARG,
+ RTE_COMPRESSDEV_PMD_SOCKET_ID_ARG
+};
+
+/**
+ * @internal
+ * Initialisation parameters for comp devices
+ */
+struct rte_compressdev_pmd_init_params {
+ char name[RTE_COMPRESSDEV_NAME_MAX_LEN];
+ int socket_id;
+};
+
+/** Global structure used for maintaining state of allocated comp devices */
+struct rte_compressdev_global {
+ struct rte_compressdev *devs; /**< Device information array */
+ struct rte_compressdev_data *data[RTE_COMPRESS_MAX_DEVS];
+ /**< Device private data */
+ uint8_t nb_devs; /**< Number of devices found */
+ uint8_t max_devs; /**< Max number of devices */
+};
+
+/** Pointer to global array of comp devices */
+extern struct rte_compressdev *rte_compressdevs;
+/** Pointer to global comp devices data structure */
+extern struct rte_compressdev_global *rte_compressdev_globals;
+
+/**
+ * Get the rte_compressdev structure device pointer for the named device.
+ *
+ * @param name
+ * Compress device name
+ * @return
+ * - The rte_compressdev structure pointer for the given device identifier.
+ */
+struct rte_compressdev * __rte_experimental
+rte_compressdev_pmd_get_named_dev(const char *name);
+
+/**
+ * Definitions of all functions exported by a driver through the
+ * the generic structure of type *comp_dev_ops* supplied in the
+ * *rte_compressdev* structure associated with a device.
+ */
+
+/**
+ * Function used to configure device.
+ *
+ * @param dev
+ * Compress device
+ * @param config
+ * Compress device configurations
+ * @return
+ * Returns 0 on success
+ */
+typedef int (*compressdev_configure_t)(struct rte_compressdev *dev,
+ struct rte_compressdev_config *config);
+
+/**
+ * Function used to start a configured device.
+ *
+ * @param dev
+ * Compress device
+ * @return
+ * Returns 0 on success
+ */
+typedef int (*compressdev_start_t)(struct rte_compressdev *dev);
+
+/**
+ * Function used to stop a configured device.
+ *
+ * @param dev
+ * Compress device
+ */
+typedef void (*compressdev_stop_t)(struct rte_compressdev *dev);
+
+/**
+ * Function used to close a configured device.
+ *
+ * @param dev
+ * Compress device
+ * @return
+ * - 0 on success.
+ * - EAGAIN if can't close as device is busy
+ */
+typedef int (*compressdev_close_t)(struct rte_compressdev *dev);
+
+
+/**
+ * Function used to get statistics of a device.
+ *
+ * @param dev
+ * Compress device
+ * @param stats
+ * Compress device stats to populate
+ */
+typedef void (*compressdev_stats_get_t)(struct rte_compressdev *dev,
+ struct rte_compressdev_stats *stats);
+
+
+/**
+ * Function used to reset statistics of a device.
+ *
+ * @param dev
+ * Compress device
+ */
+typedef void (*compressdev_stats_reset_t)(struct rte_compressdev *dev);
+
+
+/**
+ * Function used to get specific information of a device.
+ *
+ * @param dev
+ * Compress device
+ */
+typedef void (*compressdev_info_get_t)(struct rte_compressdev *dev,
+ struct rte_compressdev_info *dev_info);
+
+/**
+ * Setup a queue pair for a device.
+ *
+ * @param dev
+ * Compress device
+ * @param qp_id
+ * Queue pair identifier
+ * @param max_inflight_ops
+ * Max inflight ops which qp must accommodate
+ * @param socket_id
+ * Socket identifier
+ * @return
+ * Returns 0 on success.
+ */
+typedef int (*compressdev_queue_pair_setup_t)(struct rte_compressdev *dev,
+ uint16_t qp_id, uint32_t max_inflight_ops, int socket_id);
+
+/**
+ * Release memory resources allocated by given queue pair.
+ *
+ * @param dev
+ * Compress device
+ * @param qp_id
+ * Queue pair identifier
+ * @return
+ * - 0 on success.
+ * - EAGAIN if can't close as device is busy
+ */
+typedef int (*compressdev_queue_pair_release_t)(struct rte_compressdev *dev,
+ uint16_t qp_id);
+
+/**
+ * Get number of available queue pairs of a device.
+ *
+ * @param dev
+ * Compress device
+ * @return
+ * Returns number of queue pairs on success.
+ */
+typedef uint32_t (*compressdev_queue_pair_count_t)(struct rte_compressdev *dev);
+
+/**
+ * Create driver private stream data.
+ *
+ * @param dev
+ * Compressdev device
+ * @param xform
+ * xform data
+ * @param stream
+ * ptr where handle of pmd's private stream data should be stored
+ * @return
+ * - Returns 0 if private stream structure has been created successfully.
+ * - Returns -EINVAL if input parameters are invalid.
+ * - Returns -ENOTSUP if comp device does not support STATEFUL operations.
+ * - Returns -ENOTSUP if comp device does not support the comp transform.
+ * - Returns -ENOMEM if the private stream could not be allocated.
+ */
+typedef int (*compressdev_stream_create_t)(struct rte_compressdev *dev,
+ const struct rte_comp_xform *xform, void **stream);
+
+/**
+ * Free driver private stream data.
+ *
+ * @param dev
+ * Compressdev device
+ * @param stream
+ * handle of pmd's private stream data
+ * @return
+ * - 0 if successful
+ * - <0 in error cases
+ * - Returns -EINVAL if input parameters are invalid.
+ * - Returns -ENOTSUP if comp device does not support STATEFUL operations.
+ * - Returns -EBUSY if can't free stream as there are inflight operations
+ */
+typedef int (*compressdev_stream_free_t)(struct rte_compressdev *dev,
+ void *stream);
+
+/**
+ * Create driver private_xform data.
+ *
+ * @param dev
+ * Compressdev device
+ * @param xform
+ * xform data
+ * @param private_xform
+ * ptr where handle of pmd's private_xform data should be stored
+ * @return
+ * - if successful returns 0
+ * and valid private_xform handle
+ * - <0 in error cases
+ * - Returns -EINVAL if input parameters are invalid.
+ * - Returns -ENOTSUP if comp device does not support the comp transform.
+ * - Returns -ENOMEM if the private_xform could not be allocated.
+ */
+typedef int (*compressdev_private_xform_create_t)(struct rte_compressdev *dev,
+ const struct rte_comp_xform *xform, void **private_xform);
+
+/**
+ * Free driver private_xform data.
+ *
+ * @param dev
+ * Compressdev device
+ * @param private_xform
+ * handle of pmd's private_xform data
+ * @return
+ * - 0 if successful
+ * - <0 in error cases
+ * - Returns -EINVAL if input parameters are invalid.
+ * - Returns -EBUSY if can't free private_xform due to inflight operations
+ */
+typedef int (*compressdev_private_xform_free_t)(struct rte_compressdev *dev,
+ void *private_xform);
+
+/** comp device operations function pointer table */
+struct rte_compressdev_ops {
+ compressdev_configure_t dev_configure; /**< Configure device. */
+ compressdev_start_t dev_start; /**< Start device. */
+ compressdev_stop_t dev_stop; /**< Stop device. */
+ compressdev_close_t dev_close; /**< Close device. */
+
+ compressdev_info_get_t dev_infos_get; /**< Get device info. */
+
+ compressdev_stats_get_t stats_get;
+ /**< Get device statistics. */
+ compressdev_stats_reset_t stats_reset;
+ /**< Reset device statistics. */
+
+ compressdev_queue_pair_setup_t queue_pair_setup;
+ /**< Set up a device queue pair. */
+ compressdev_queue_pair_release_t queue_pair_release;
+ /**< Release a queue pair. */
+
+ compressdev_stream_create_t stream_create;
+ /**< Create a comp stream and initialise its private data. */
+ compressdev_stream_free_t stream_free;
+ /**< Free a comp stream's private data. */
+
+ compressdev_private_xform_create_t private_xform_create;
+ /**< Create a comp private_xform and initialise its private data. */
+ compressdev_private_xform_free_t private_xform_free;
+ /**< Free a comp private_xform's data. */
+};
+
+/**
+ * @internal
+ *
+ * Function for internal use by dummy drivers primarily, e.g. ring-based
+ * driver.
+ * Allocates a new compressdev slot for an comp device and returns the pointer
+ * to that slot for the driver to use.
+ *
+ * @param name
+ * Unique identifier name for each device
+ * @param socket_id
+ * Socket to allocate resources on
+ * @return
+ * - Slot in the rte_dev_devices array for a new device;
+ */
+struct rte_compressdev * __rte_experimental
+rte_compressdev_pmd_allocate(const char *name, int socket_id);
+
+/**
+ * @internal
+ *
+ * Function for internal use by dummy drivers primarily, e.g. ring-based
+ * driver.
+ * Release the specified compressdev device.
+ *
+ * @param dev
+ * Compress device
+ * @return
+ * - 0 on success, negative on error
+ */
+int __rte_experimental
+rte_compressdev_pmd_release_device(struct rte_compressdev *dev);
+
+
+/**
+ * @internal
+ *
+ * PMD assist function to parse initialisation arguments for comp driver
+ * when creating a new comp PMD device instance.
+ *
+ * PMD driver should set default values for that PMD before calling function,
+ * these default values will be over-written with successfully parsed values
+ * from args string.
+ *
+ * @param params
+ * Parsed PMD initialisation parameters
+ * @param args
+ * Input argument string to parse
+ * @return
+ * - 0 on success
+ * - errno on failure
+ */
+int __rte_experimental
+rte_compressdev_pmd_parse_input_args(
+ struct rte_compressdev_pmd_init_params *params,
+ const char *args);
+
+/**
+ * @internal
+ *
+ * PMD assist function to provide boiler plate code for comp driver to create
+ * and allocate resources for a new comp PMD device instance.
+ *
+ * @param name
+ * Compress device name
+ * @param device
+ * Base device instance
+ * @param params
+ * PMD initialisation parameters
+ * @return
+ * - comp device instance on success
+ * - NULL on creation failure
+ */
+struct rte_compressdev * __rte_experimental
+rte_compressdev_pmd_create(const char *name,
+ struct rte_device *device,
+ size_t private_data_size,
+ struct rte_compressdev_pmd_init_params *params);
+
+/**
+ * @internal
+ *
+ * PMD assist function to provide boiler plate code for comp driver to
+ * destroy and free resources associated with a comp PMD device instance.
+ *
+ * @param dev
+ * Compress device
+ * @return
+ * - 0 on success
+ * - errno on failure
+ */
+int __rte_experimental
+rte_compressdev_pmd_destroy(struct rte_compressdev *dev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_COMPRESSDEV_PMD_H_ */
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