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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2018 NXP
*/
#ifndef __FSL_DPDMAI_H
#define __FSL_DPDMAI_H
struct fsl_mc_io;
/* Data Path DMA Interface API
* Contains initialization APIs and runtime control APIs for DPDMAI
*/
/* General DPDMAI macros */
/**
* Maximum number of Tx/Rx priorities per DPDMAI object
*/
#define DPDMAI_PRIO_NUM 2
/**
* All queues considered; see dpdmai_set_rx_queue()
*/
#define DPDMAI_ALL_QUEUES (uint8_t)(-1)
int dpdmai_open(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
int dpdmai_id,
uint16_t *token);
int dpdmai_close(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* struct dpdmai_cfg - Structure representing DPDMAI configuration
* @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 {
uint8_t num_queues;
uint8_t priorities[DPDMAI_PRIO_NUM];
};
int dpdmai_create(struct fsl_mc_io *mc_io,
uint16_t dprc_token,
uint32_t cmd_flags,
const struct dpdmai_cfg *cfg,
uint32_t *obj_id);
int dpdmai_destroy(struct fsl_mc_io *mc_io,
uint16_t dprc_token,
uint32_t cmd_flags,
uint32_t object_id);
int dpdmai_enable(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
int dpdmai_disable(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
int dpdmai_is_enabled(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
int *en);
int dpdmai_reset(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* struct dpdmai_attr - Structure representing DPDMAI attributes
* @id: DPDMAI object ID
* @num_of_priorities: number of priorities
*/
struct dpdmai_attr {
int id;
uint8_t num_of_priorities;
uint8_t num_of_queues;
};
int dpdmai_get_attributes(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
struct dpdmai_attr *attr);
/**
* 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;
uint8_t priority;
};
/* DPDMAI queue modification options */
/**
* Select to modify the user's context associated with the queue
*/
#define DPDMAI_QUEUE_OPT_USER_CTX 0x00000001
/**
* Select to modify the queue's destination
*/
#define DPDMAI_QUEUE_OPT_DEST 0x00000002
/**
* 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 {
uint32_t options;
uint64_t user_ctx;
struct dpdmai_dest_cfg dest_cfg;
};
int dpdmai_set_rx_queue(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
uint8_t queue_idx,
uint8_t priority,
const struct dpdmai_rx_queue_cfg *cfg);
/**
* 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 {
uint64_t user_ctx;
struct dpdmai_dest_cfg dest_cfg;
uint32_t fqid;
};
int dpdmai_get_rx_queue(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
uint8_t queue_idx,
uint8_t priority,
struct dpdmai_rx_queue_attr *attr);
/**
* struct dpdmai_tx_queue_attr - Structure representing attributes of Tx queues
* @fqid: Virtual FQID to be used for sending frames to DMA hardware
*/
struct dpdmai_tx_queue_attr {
uint32_t fqid;
};
int dpdmai_get_tx_queue(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
uint8_t queue_idx,
uint8_t priority,
struct dpdmai_tx_queue_attr *attr);
#endif /* __FSL_DPDMAI_H */
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