extern "C" {
#endif
+struct rte_dma_dev;
+
+/** @internal Used to get device information of a device. */
+typedef int (*rte_dma_info_get_t)(const struct rte_dma_dev *dev,
+ struct rte_dma_info *dev_info,
+ uint32_t info_sz);
+
+/** @internal Used to configure a device. */
+typedef int (*rte_dma_configure_t)(struct rte_dma_dev *dev,
+ const struct rte_dma_conf *dev_conf,
+ uint32_t conf_sz);
+
+/** @internal Used to start a configured device. */
+typedef int (*rte_dma_start_t)(struct rte_dma_dev *dev);
+
+/** @internal Used to stop a configured device. */
+typedef int (*rte_dma_stop_t)(struct rte_dma_dev *dev);
+
+/** @internal Used to close a configured device. */
+typedef int (*rte_dma_close_t)(struct rte_dma_dev *dev);
+
+/** @internal Used to allocate and set up a virtual DMA channel. */
+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);
+
+/** @internal Used to retrieve basic statistics. */
+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);
+
+/** @internal Used to reset basic statistics. */
+typedef int (*rte_dma_stats_reset_t)(struct rte_dma_dev *dev, uint16_t vchan);
+
+/** @internal Used to check if a virtual channel has finished all jobs. */
+typedef int (*rte_dma_vchan_status_t)(const struct rte_dma_dev *dev, uint16_t vchan,
+ enum rte_dma_vchan_status *status);
+
+/** @internal Used to dump internal information. */
+typedef int (*rte_dma_dump_t)(const struct rte_dma_dev *dev, FILE *f);
+
+/**
+ * DMA device operations function pointer table.
+ *
+ * @see struct rte_dma_dev:dev_ops
+ */
+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;
+};
+
+/**
+ * @internal
+ * The data part, with no function pointers, associated with each DMA device.
+ *
+ * This structure is safe to place in shared memory to be common among different
+ * processes in a multi-process configuration.
+ *
+ * @see struct rte_dma_dev::data
+ */
+struct rte_dma_dev_data {
+ char dev_name[RTE_DEV_NAME_MAX_LEN]; /**< Unique identifier name */
+ int16_t dev_id; /**< Device [external] identifier. */
+ int16_t numa_node; /**< Local NUMA memory ID. -1 if unknown. */
+ void *dev_private; /**< PMD-specific private data. */
+ struct rte_dma_conf dev_conf; /**< DMA device configuration. */
+ __extension__
+ uint8_t dev_started : 1; /**< Device state: STARTED(1)/STOPPED(0). */
+ uint64_t reserved[2]; /**< Reserved for future fields */
+} __rte_cache_aligned;
+
/**
* Possible states of a DMA device.
*
* The generic data structure associated with each DMA device.
*/
struct rte_dma_dev {
- char dev_name[RTE_DEV_NAME_MAX_LEN]; /**< Unique identifier name */
- int16_t dev_id; /**< Device [external] identifier. */
- int16_t numa_node; /**< Local NUMA memory ID. -1 if unknown. */
- void *dev_private; /**< PMD-specific private data. */
/** Device info which supplied during device initialization. */
struct rte_device *device;
+ struct rte_dma_dev_data *data; /**< Pointer to shared device data. */
+ /**< Fast-path functions and related data. */
+ struct rte_dma_fp_object *fp_obj;
+ /** Functions implemented by PMD. */
+ const struct rte_dma_dev_ops *dev_ops;
enum rte_dma_dev_state state; /**< Flag indicating the device state. */
uint64_t reserved[2]; /**< Reserved for future fields. */
} __rte_cache_aligned;
-extern struct rte_dma_dev *rte_dma_devices;
-
/**
* @internal
* Allocate a new dmadev slot for an DMA device and return the pointer to that