--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright 2017 NXP
+ */
+
+#ifndef _RTE_RAWDEV_PMD_H_
+#define _RTE_RAWDEV_PMD_H_
+
+/** @file
+ * RTE RAW PMD APIs
+ *
+ * @note
+ * Driver facing APIs for a raw device. These are not to be called directly by
+ * any application.
+ *
+ * @warning
+ * @b EXPERIMENTAL: this API may change without prior notice
+ */
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <string.h>
+
+#include <rte_dev.h>
+#include <rte_malloc.h>
+#include <rte_log.h>
+#include <rte_common.h>
+
+#include "rte_rawdev.h"
+
+extern int librawdev_logtype;
+
+/* Logging Macros */
+#define RTE_RDEV_LOG(level, fmt, args...) \
+ rte_log(RTE_LOG_ ## level, librawdev_logtype, "%s(): " fmt "\n", \
+ __func__, ##args)
+
+#define RTE_RDEV_ERR(fmt, args...) \
+ RTE_RDEV_LOG(ERR, fmt, ## args)
+#define RTE_RDEV_DEBUG(fmt, args...) \
+ RTE_RDEV_LOG(DEBUG, fmt, ## args)
+#define RTE_RDEV_INFO(fmt, args...) \
+ RTE_RDEV_LOG(INFO, fmt, ## args)
+
+
+/* Macros to check for valid device */
+#define RTE_RAWDEV_VALID_DEVID_OR_ERR_RET(dev_id, retval) do { \
+ if (!rte_rawdev_pmd_is_valid_dev((dev_id))) { \
+ RTE_RDEV_ERR("Invalid dev_id=%d", dev_id); \
+ return retval; \
+ } \
+} while (0)
+
+#define RTE_RAWDEV_VALID_DEVID_OR_RET(dev_id) do { \
+ if (!rte_rawdev_pmd_is_valid_dev((dev_id))) { \
+ RTE_RDEV_ERR("Invalid dev_id=%d", dev_id); \
+ return; \
+ } \
+} while (0)
+
+#define RTE_RAWDEV_DETACHED (0)
+#define RTE_RAWDEV_ATTACHED (1)
+
+/* Global structure used for maintaining state of allocated raw devices.
+ *
+ * TODO: Can be expanded to <type of raw device>:<count> in future.
+ * Applications should be able to select from a number of type of raw
+ * devices which were detected or attached to this DPDK instance.
+ */
+struct rte_rawdev_global {
+ /**< Number of devices found */
+ uint16_t nb_devs;
+};
+
+extern struct rte_rawdev_global *rte_rawdev_globals;
+/** Pointer to global raw devices data structure. */
+extern struct rte_rawdev *rte_rawdevs;
+/** The pool of rte_rawdev structures. */
+
+/**
+ * Get the rte_rawdev structure device pointer for the named device.
+ *
+ * @param name
+ * device name to select the device structure.
+ *
+ * @return
+ * - The rte_rawdev structure pointer for the given device ID.
+ */
+static inline struct rte_rawdev *
+rte_rawdev_pmd_get_named_dev(const char *name)
+{
+ struct rte_rawdev *dev;
+ unsigned int i;
+
+ if (name == NULL)
+ return NULL;
+
+ for (i = 0; i < RTE_RAWDEV_MAX_DEVS; i++) {
+ dev = &rte_rawdevs[i];
+ if ((dev->attached == RTE_RAWDEV_ATTACHED) &&
+ (strcmp(dev->name, name) == 0))
+ return dev;
+ }
+
+ return NULL;
+}
+
+/**
+ * Validate if the raw device index is a valid attached raw device.
+ *
+ * @param dev_id
+ * raw device index.
+ *
+ * @return
+ * - If the device index is valid (1) or not (0).
+ */
+static inline unsigned
+rte_rawdev_pmd_is_valid_dev(uint8_t dev_id)
+{
+ struct rte_rawdev *dev;
+
+ if (dev_id >= RTE_RAWDEV_MAX_DEVS)
+ return 0;
+
+ dev = &rte_rawdevs[dev_id];
+ if (dev->attached != RTE_RAWDEV_ATTACHED)
+ return 0;
+ else
+ return 1;
+}
+
+/**
+ * Definitions of all functions exported by a driver through the
+ * the generic structure of type *rawdev_ops* supplied in the
+ * *rte_rawdev* structure associated with a device.
+ */
+
+/**
+ * Get device information of a device.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param dev_info
+ * Raw device information structure
+ *
+ * @return
+ * Returns 0 on success
+ */
+typedef void (*rawdev_info_get_t)(struct rte_rawdev *dev,
+ rte_rawdev_obj_t dev_info);
+
+/**
+ * Configure a device.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param config
+ * Void object containing device specific configuration
+ *
+ * @return
+ * Returns 0 on success
+ */
+typedef int (*rawdev_configure_t)(const struct rte_rawdev *dev,
+ rte_rawdev_obj_t config);
+
+/**
+ * Start a configured device.
+ *
+ * @param dev
+ * Raw device pointer
+ *
+ * @return
+ * Returns 0 on success
+ */
+typedef int (*rawdev_start_t)(struct rte_rawdev *dev);
+
+/**
+ * Stop a configured device.
+ *
+ * @param dev
+ * Raw device pointer
+ */
+typedef void (*rawdev_stop_t)(struct rte_rawdev *dev);
+
+/**
+ * Close a configured device.
+ *
+ * @param dev
+ * Raw device pointer
+ *
+ * @return
+ * - 0 on success
+ * - (-EAGAIN) if can't close as device is busy
+ */
+typedef int (*rawdev_close_t)(struct rte_rawdev *dev);
+
+/**
+ * Reset a configured device.
+ *
+ * @param dev
+ * Raw device pointer
+ * @return
+ * 0 for success
+ * !0 for failure
+ */
+typedef int (*rawdev_reset_t)(struct rte_rawdev *dev);
+
+/**
+ * Retrieve the current raw queue configuration.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param queue_id
+ * Raw device queue index
+ * @param[out] queue_conf
+ * Raw device queue configuration structure
+ *
+ */
+typedef void (*rawdev_queue_conf_get_t)(struct rte_rawdev *dev,
+ uint16_t queue_id,
+ rte_rawdev_obj_t queue_conf);
+
+/**
+ * Setup an raw queue.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param queue_id
+ * Rawqueue index
+ * @param queue_conf
+ * Rawqueue configuration structure
+ *
+ * @return
+ * Returns 0 on success.
+ */
+typedef int (*rawdev_queue_setup_t)(struct rte_rawdev *dev,
+ uint16_t queue_id,
+ rte_rawdev_obj_t queue_conf);
+
+/**
+ * Release resources allocated by given raw queue.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param queue_id
+ * Raw queue index
+ *
+ */
+typedef int (*rawdev_queue_release_t)(struct rte_rawdev *dev,
+ uint16_t queue_id);
+
+/**
+ * Enqueue an array of raw buffers to the device.
+ *
+ * Buffer being used is opaque - it can be obtained from mempool or from
+ * any other source. Interpretation of buffer is responsibility of driver.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param bufs
+ * array of buffers
+ * @param count
+ * number of buffers passed
+ * @param context
+ * an opaque object representing context of the call; for example, an
+ * application can pass information about the queues on which enqueue needs
+ * to be done. Or, the enqueue operation might be passed reference to an
+ * object containing a callback (agreed upon between applicatio and driver).
+ *
+ * @return
+ * >=0 Count of buffers successfully enqueued (0: no buffers enqueued)
+ * <0 Error count in case of error
+ */
+typedef int (*rawdev_enqueue_bufs_t)(struct rte_rawdev *dev,
+ struct rte_rawdev_buf **buffers,
+ unsigned int count,
+ rte_rawdev_obj_t context);
+
+/**
+ * Dequeue an array of raw buffers from the device.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param bufs
+ * array of buffers
+ * @param count
+ * Max buffers expected to be dequeued
+ * @param context
+ * an opaque object representing context of the call. Based on this object,
+ * the application and driver can coordinate for dequeue operation involving
+ * agreed upon semantics. For example, queue information/id on which Dequeue
+ * needs to be performed.
+ * @return
+ * >0, ~0: Count of buffers returned
+ * <0: Error
+ * Whether short dequeue is success or failure is decided between app and
+ * driver.
+ */
+typedef int (*rawdev_dequeue_bufs_t)(struct rte_rawdev *dev,
+ struct rte_rawdev_buf **buffers,
+ unsigned int count,
+ rte_rawdev_obj_t context);
+
+/**
+ * Dump internal information
+ *
+ * @param dev
+ * Raw device pointer
+ * @param f
+ * A pointer to a file for output
+ * @return
+ * 0 for success,
+ * !0 Error
+ *
+ */
+typedef int (*rawdev_dump_t)(struct rte_rawdev *dev, FILE *f);
+
+/**
+ * Get an attribute value from implementation.
+ * Attribute is an opaque handle agreed upon between application and PMD.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param attr_name
+ * Opaque object representing an attribute in implementation.
+ * @param attr_value [out]
+ * Opaque response to the attribute value. In case of error, this remains
+ * untouched. This is double pointer of void type.
+ * @return
+ * 0 for success
+ * !0 Error; attr_value remains untouched in case of error.
+ */
+typedef int (*rawdev_get_attr_t)(struct rte_rawdev *dev,
+ const char *attr_name,
+ uint64_t *attr_value);
+
+/**
+ * Set an attribute value.
+ * Attribute is an opaque handle agreed upon between application and PMD.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param attr_name
+ * Opaque object representing an attribute in implementation.
+ * @param attr_value
+ * Value of the attribute represented by attr_name
+ * @return
+ * 0 for success
+ * !0 Error
+ */
+typedef int (*rawdev_set_attr_t)(struct rte_rawdev *dev,
+ const char *attr_name,
+ const uint64_t attr_value);
+
+/**
+ * Retrieve a set of statistics from device.
+ * Note: Being a raw device, the stats are specific to the device being
+ * implemented thus represented as xstats.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param ids
+ * The stat ids to retrieve
+ * @param values
+ * The returned stat values
+ * @param n
+ * The number of id values and entries in the values array
+ * @return
+ * The number of stat values successfully filled into the values array
+ */
+typedef int (*rawdev_xstats_get_t)(const struct rte_rawdev *dev,
+ const unsigned int ids[], uint64_t values[], unsigned int n);
+
+/**
+ * Resets the statistic values in xstats for the device.
+ */
+typedef int (*rawdev_xstats_reset_t)(struct rte_rawdev *dev,
+ const uint32_t ids[],
+ uint32_t nb_ids);
+
+/**
+ * Get names of extended stats of an raw device
+ *
+ * @param dev
+ * Raw device pointer
+ * @param xstats_names
+ * Array of name values to be filled in
+ * @param size
+ * Number of values in the xstats_names array
+ * @return
+ * When size >= the number of stats, return the number of stat values filled
+ * into the array.
+ * When size < the number of available stats, return the number of stats
+ * values, and do not fill in any data into xstats_names.
+ */
+typedef int (*rawdev_xstats_get_names_t)(const struct rte_rawdev *dev,
+ struct rte_rawdev_xstats_name *xstats_names,
+ unsigned int size);
+
+/**
+ * Get value of one stats and optionally return its id
+ *
+ * @param dev
+ * Raw device pointer
+ * @param name
+ * The name of the stat to retrieve
+ * @param id
+ * Pointer to an unsigned int where we store the stat-id.
+ * This pointer may be null if the id is not required.
+ * @return
+ * The value of the stat, or (uint64_t)-1 if the stat is not found.
+ * If the stat is not found, the id value will be returned as (unsigned)-1,
+ * if id pointer is non-NULL
+ */
+typedef uint64_t (*rawdev_xstats_get_by_name_t)(const struct rte_rawdev *dev,
+ const char *name,
+ unsigned int *id);
+
+/**
+ * Get firmware/device-stack status.
+ * Implementation to allocate buffer for returning information.
+ *
+ * @param dev
+ * Raw device pointer
+ * @param status
+ * void block containing device specific status information
+ * @return
+ * 0 for success,
+ * !0 for failure, with undefined value in `status_info`
+ */
+typedef int (*rawdev_firmware_status_get_t)(struct rte_rawdev *dev,
+ rte_rawdev_obj_t status_info);
+
+/**
+ * Get firmware version information
+ *
+ * @param dev
+ * Raw device pointer
+ * @param version_info
+ * void pointer to version information returned by device
+ * @return
+ * 0 for success,
+ * !0 for failure, with undefined value in `version_info`
+ */
+typedef int (*rawdev_firmware_version_get_t)(struct rte_rawdev *dev,
+ rte_rawdev_obj_t version_info);
+
+/**
+ * Load firwmare from a buffer (DMA'able)
+ *
+ * @param dev
+ * Raw device pointer
+ * @param firmware_file
+ * file pointer to firmware area
+ * @return
+ * >0, ~0: for successful load
+ * <0: for failure
+ *
+ * @see Application may use 'firmware_version_get` for ascertaining successful
+ * load
+ */
+typedef int (*rawdev_firmware_load_t)(struct rte_rawdev *dev,
+ rte_rawdev_obj_t firmware_buf);
+
+/**
+ * Unload firwmare
+ *
+ * @param dev
+ * Raw device pointer
+ * @return
+ * >0, ~0 for successful unloading
+ * <0 for failure in unloading
+ *
+ * Note: Application can use the `firmware_status_get` or
+ * `firmware_version_get` to get result of unload.
+ */
+typedef int (*rawdev_firmware_unload_t)(struct rte_rawdev *dev);
+
+/**
+ * Start rawdev selftest
+ *
+ * @return
+ * Return 0 on success
+ */
+typedef int (*rawdev_selftest_t)(void);
+
+/** Rawdevice operations function pointer table */
+struct rte_rawdev_ops {
+ /**< Get device info. */
+ rawdev_info_get_t dev_info_get;
+ /**< Configure device. */
+ rawdev_configure_t dev_configure;
+ /**< Start device. */
+ rawdev_start_t dev_start;
+ /**< Stop device. */
+ rawdev_stop_t dev_stop;
+ /**< Close device. */
+ rawdev_close_t dev_close;
+ /**< Reset device. */
+ rawdev_reset_t dev_reset;
+
+ /**< Get raw queue configuration. */
+ rawdev_queue_conf_get_t queue_def_conf;
+ /**< Set up an raw queue. */
+ rawdev_queue_setup_t queue_setup;
+ /**< Release an raw queue. */
+ rawdev_queue_release_t queue_release;
+
+ /**< Enqueue an array of raw buffers to device. */
+ rawdev_enqueue_bufs_t enqueue_bufs;
+ /**< Dequeue an array of raw buffers from device. */
+ /** TODO: Callback based enqueue and dequeue support */
+ rawdev_dequeue_bufs_t dequeue_bufs;
+
+ /* Dump internal information */
+ rawdev_dump_t dump;
+
+ /**< Get an attribute managed by the implementation */
+ rawdev_get_attr_t attr_get;
+ /**< Set an attribute managed by the implementation */
+ rawdev_set_attr_t attr_set;
+
+ /**< Get extended device statistics. */
+ rawdev_xstats_get_t xstats_get;
+ /**< Get names of extended stats. */
+ rawdev_xstats_get_names_t xstats_get_names;
+ /**< Get one value by name. */
+ rawdev_xstats_get_by_name_t xstats_get_by_name;
+ /**< Reset the statistics values in xstats. */
+ rawdev_xstats_reset_t xstats_reset;
+
+ /**< Obtainer firmware status */
+ rawdev_firmware_status_get_t firmware_status_get;
+ /**< Obtain firmware version information */
+ rawdev_firmware_version_get_t firmware_version_get;
+ /**< Load firmware */
+ rawdev_firmware_load_t firmware_load;
+ /**< Unload firmware */
+ rawdev_firmware_unload_t firmware_unload;
+
+ /**< Device selftest function */
+ rawdev_selftest_t dev_selftest;
+};
+
+/**
+ * Allocates a new rawdev slot for an raw device and returns the pointer
+ * to that slot for the driver to use.
+ *
+ * @param name
+ * Unique identifier name for each device
+ * @param dev_private_size
+ * Private data allocated within rte_rawdev object.
+ * @param socket_id
+ * Socket to allocate resources on.
+ * @return
+ * - Slot in the rte_dev_devices array for a new device;
+ */
+struct rte_rawdev * __rte_experimental
+rte_rawdev_pmd_allocate(const char *name, size_t dev_private_size,
+ int socket_id);
+
+/**
+ * Release the specified rawdev device.
+ *
+ * @param rawdev
+ * The *rawdev* pointer is the address of the *rte_rawdev* structure.
+ * @return
+ * - 0 on success, negative on error
+ */
+int __rte_experimental
+rte_rawdev_pmd_release(struct rte_rawdev *rawdev);
+
+/**
+ * Creates a new raw device and returns the pointer to that device.
+ *
+ * @param name
+ * Pointer to a character array containing name of the device
+ * @param dev_private_size
+ * Size of raw PMDs private data
+ * @param socket_id
+ * Socket to allocate resources on.
+ *
+ * @return
+ * - Raw device pointer if device is successfully created.
+ * - NULL if device cannot be created.
+ */
+struct rte_rawdev * __rte_experimental
+rte_rawdev_pmd_init(const char *name, size_t dev_private_size,
+ int socket_id);
+
+/**
+ * Destroy a raw device
+ *
+ * @param name
+ * Name of the device
+ * @return
+ * - 0 on success, negative on error
+ */
+int __rte_experimental
+rte_rawdev_pmd_uninit(const char *name);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_RAWDEV_PMD_H_ */
Code Review / deb_dpdk.git / blobdiff