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/* SPDX-License-Identifier: (BSD-3-Clause OR GPL-2.0)
*
* Copyright 2013-2016 Freescale Semiconductor Inc.
*
*/
#ifndef __FSL_DPCI_H
#define __FSL_DPCI_H
/* Data Path Communication Interface API
* Contains initialization APIs and runtime control APIs for DPCI
*/
struct fsl_mc_io;
/** General DPCI macros */
/**
* Maximum number of Tx/Rx priorities per DPCI object
*/
#define DPCI_PRIO_NUM 2
/**
* Indicates an invalid frame queue
*/
#define DPCI_FQID_NOT_VALID (uint32_t)(-1)
/**
* All queues considered; see dpci_set_rx_queue()
*/
#define DPCI_ALL_QUEUES (uint8_t)(-1)
int dpci_open(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
int dpci_id,
uint16_t *token);
int dpci_close(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* Enable the Order Restoration support
*/
#define DPCI_OPT_HAS_OPR 0x000040
/**
* Order Point Records are shared for the entire DPCI
*/
#define DPCI_OPT_OPR_SHARED 0x000080
/**
* struct dpci_cfg - Structure representing DPCI configuration
* @options: Any combination of the following options:
* DPCI_OPT_HAS_OPR
* DPCI_OPT_OPR_SHARED
* @num_of_priorities: Number of receive priorities (queues) for the DPCI;
* note, that the number of transmit priorities (queues)
* is determined by the number of receive priorities of
* the peer DPCI object
*/
struct dpci_cfg {
uint32_t options;
uint8_t num_of_priorities;
};
int dpci_create(struct fsl_mc_io *mc_io,
uint16_t dprc_token,
uint32_t cmd_flags,
const struct dpci_cfg *cfg,
uint32_t *obj_id);
int dpci_destroy(struct fsl_mc_io *mc_io,
uint16_t dprc_token,
uint32_t cmd_flags,
uint32_t object_id);
int dpci_enable(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
int dpci_disable(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
int dpci_is_enabled(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
int *en);
int dpci_reset(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* struct dpci_attr - Structure representing DPCI attributes
* @id: DPCI object ID
* @num_of_priorities: Number of receive priorities
*/
struct dpci_attr {
int id;
uint8_t num_of_priorities;
};
int dpci_get_attributes(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
struct dpci_attr *attr);
/**
* enum dpci_dest - DPCI destination types
* @DPCI_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
* @DPCI_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
* @DPCI_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 dpci_dest {
DPCI_DEST_NONE = 0,
DPCI_DEST_DPIO = 1,
DPCI_DEST_DPCON = 2
};
/**
* struct dpci_dest_cfg - Structure representing DPCI destination configuration
* @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 'DPCI_DEST_NONE' option
*/
struct dpci_dest_cfg {
enum dpci_dest dest_type;
int dest_id;
uint8_t priority;
};
/** DPCI queue modification options */
/**
* Select to modify the user's context associated with the queue
*/
#define DPCI_QUEUE_OPT_USER_CTX 0x00000001
/**
* Select to modify the queue's destination
*/
#define DPCI_QUEUE_OPT_DEST 0x00000002
/**
* struct dpci_rx_queue_cfg - Structure representing RX queue configuration
* @options: Flags representing the suggested modifications to the queue;
* Use any combination of 'DPCI_QUEUE_OPT_<X>' flags
* @user_ctx: User context value provided in the frame descriptor of each
* dequeued frame;
* valid only if 'DPCI_QUEUE_OPT_USER_CTX' is contained in
* 'options'
* @dest_cfg: Queue destination parameters;
* valid only if 'DPCI_QUEUE_OPT_DEST' is contained in 'options'
*/
struct dpci_rx_queue_cfg {
uint32_t options;
uint64_t user_ctx;
struct dpci_dest_cfg dest_cfg;
};
int dpci_set_rx_queue(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
uint8_t priority,
const struct dpci_rx_queue_cfg *cfg);
/**
* struct dpci_rx_queue_attr - Structure representing Rx queue attributes
* @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 dpci_rx_queue_attr {
uint64_t user_ctx;
struct dpci_dest_cfg dest_cfg;
uint32_t fqid;
};
int dpci_get_rx_queue(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
uint8_t priority,
struct dpci_rx_queue_attr *attr);
/**
* struct dpci_tx_queue_attr - Structure representing attributes of Tx queues
* @fqid: Virtual FQID to be used for sending frames to peer DPCI;
* returns 'DPCI_FQID_NOT_VALID' if a no peer is connected or if
* the selected priority exceeds the number of priorities of the
* peer DPCI object
*/
struct dpci_tx_queue_attr {
uint32_t fqid;
};
int dpci_get_tx_queue(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
uint8_t priority,
struct dpci_tx_queue_attr *attr);
int dpci_get_api_version(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t *major_ver,
uint16_t *minor_ver);
#endif /* __FSL_DPCI_H */
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