/* Data Path DMA Interface API * Contains initialization APIs and runtime control APIs for DPDMAI
*/
/* * Maximum number of Tx/Rx priorities per DPDMAI object
*/ #define DPDMAI_PRIO_NUM 2
/* DPDMAI queue modification options */
/* * Select to modify the user's context associated with the queue
*/ #define DPDMAI_QUEUE_OPT_USER_CTX 0x1
/* * Select to modify the queue's destination
*/ #define DPDMAI_QUEUE_OPT_DEST 0x2
/** * struct dpdmai_cfg - Structure representing DPDMAI configuration * @num_queues: Number of the DMA queues * @priorities: Priorities for the DMA hardware processing; valid priorities are * configured with values 1-8; the entry following last valid entry * should be configured with 0
*/ struct dpdmai_cfg {
u8 num_queues;
u8 priorities[DPDMAI_PRIO_NUM];
};
/** * struct dpdmai_attr - Structure representing DPDMAI attributes * @id: DPDMAI object ID * @version: DPDMAI version * @version.major: DPDMAI major version * @version.minor: DPDMAI minor version * @num_of_priorities: number of priorities * @num_of_queues: number of the DMA queues
*/ struct dpdmai_attr { int id; struct {
u16 major;
u16 minor;
} version;
u8 num_of_priorities;
u8 num_of_queues;
};
/** * enum dpdmai_dest - DPDMAI destination types * @DPDMAI_DEST_NONE: Unassigned destination; The queue is set in parked mode * and does not generate FQDAN notifications; user is expected to dequeue * from the queue based on polling or other user-defined method * @DPDMAI_DEST_DPIO: The queue is set in schedule mode and generates FQDAN * notifications to the specified DPIO; user is expected to dequeue * from the queue only after notification is received * @DPDMAI_DEST_DPCON: The queue is set in schedule mode and does not generate * FQDAN notifications, but is connected to the specified DPCON object; * user is expected to dequeue from the DPCON channel
*/ enum dpdmai_dest {
DPDMAI_DEST_NONE = 0,
DPDMAI_DEST_DPIO = 1,
DPDMAI_DEST_DPCON = 2
};
/** * struct dpdmai_dest_cfg - Structure representing DPDMAI destination parameters * @dest_type: Destination type * @dest_id: Either DPIO ID or DPCON ID, depending on the destination type * @priority: Priority selection within the DPIO or DPCON channel; valid values * are 0-1 or 0-7, depending on the number of priorities in that * channel; not relevant for 'DPDMAI_DEST_NONE' option
*/ struct dpdmai_dest_cfg { enum dpdmai_dest dest_type; int dest_id;
u8 priority;
};
/** * struct dpdmai_rx_queue_cfg - DPDMAI RX queue configuration * @options: Flags representing the suggested modifications to the queue; * Use any combination of 'DPDMAI_QUEUE_OPT_<X>' flags * @user_ctx: User context value provided in the frame descriptor of each * dequeued frame; * valid only if 'DPDMAI_QUEUE_OPT_USER_CTX' is contained in 'options' * @dest_cfg: Queue destination parameters; * valid only if 'DPDMAI_QUEUE_OPT_DEST' is contained in 'options'
*/ struct dpdmai_rx_queue_cfg { struct dpdmai_dest_cfg dest_cfg;
u32 options;
u64 user_ctx;
};
/** * struct dpdmai_rx_queue_attr - Structure representing attributes of Rx queues * @user_ctx: User context value provided in the frame descriptor of each * dequeued frame * @dest_cfg: Queue destination configuration * @fqid: Virtual FQID value to be used for dequeue operations
*/ struct dpdmai_rx_queue_attr { struct dpdmai_dest_cfg dest_cfg;
u64 user_ctx;
u32 fqid;
};
struct dpdmai_tx_queue_attr {
u32 fqid;
};
int dpdmai_open(struct fsl_mc_io *mc_io, u32 cmd_flags, int dpdmai_id, u16 *token); int dpdmai_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); int dpdmai_destroy(struct fsl_mc_io *mc_io, u32 cmd_flags, u32 dpdmai_id, u16 token); int dpdmai_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); int dpdmai_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); int dpdmai_reset(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token); int dpdmai_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags,
u16 token, struct dpdmai_attr *attr); int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
u8 queue_idx, u8 priority, conststruct dpdmai_rx_queue_cfg *cfg); int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
u8 queue_idx, u8 priority, struct dpdmai_rx_queue_attr *attr); int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io, u32 cmd_flags,
u16 token, u8 queue_idx, u8 priority, struct dpdmai_tx_queue_attr *attr);
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