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/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright 2019 NXP */
#ifndef __FSL_DPDMAI_H
#define __FSL_DPDMAI_H
/* DPDMAI Version */
#define DPDMAI_VER_MAJOR 3
#define DPDMAI_VER_MINOR 3
#define DPDMAI_CMD_BASE_VERSION 1
#define DPDMAI_CMD_ID_OFFSET 4
/*
* Maximum number of Tx/Rx queues per DPDMAI object
*/
#define DPDMAI_MAX_QUEUE_NUM 8
#define DPDMAI_CMDID_FORMAT_V(x, v) (((x) << DPDMAI_CMD_ID_OFFSET) | (v))
#define DPDMAI_CMDID_FORMAT(x) DPDMAI_CMDID_FORMAT_V(x, DPDMAI_CMD_BASE_VERSION)
/* Command IDs */
#define DPDMAI_CMDID_CLOSE DPDMAI_CMDID_FORMAT(0x800)
#define DPDMAI_CMDID_OPEN DPDMAI_CMDID_FORMAT(0x80E)
#define DPDMAI_CMDID_CREATE DPDMAI_CMDID_FORMAT(0x90E)
#define DPDMAI_CMDID_DESTROY DPDMAI_CMDID_FORMAT(0x900)
#define DPDMAI_CMDID_ENABLE DPDMAI_CMDID_FORMAT(0x002)
#define DPDMAI_CMDID_DISABLE DPDMAI_CMDID_FORMAT(0x003)
#define DPDMAI_CMDID_GET_ATTR DPDMAI_CMDID_FORMAT(0x004)
#define DPDMAI_CMDID_RESET DPDMAI_CMDID_FORMAT(0x005)
#define DPDMAI_CMDID_IS_ENABLED DPDMAI_CMDID_FORMAT(0x006)
#define DPDMAI_CMDID_SET_RX_QUEUE DPDMAI_CMDID_FORMAT_V(0x1A0, 2)
#define DPDMAI_CMDID_GET_RX_QUEUE DPDMAI_CMDID_FORMAT_V(0x1A1, 2)
#define DPDMAI_CMDID_GET_TX_QUEUE DPDMAI_CMDID_FORMAT_V(0x1A2, 2)
#define MC_CMD_HDR_TOKEN_O 32 /* Token field offset */
#define MC_CMD_HDR_TOKEN_S 16 /* Token field size */
#define MAKE_UMASK64(_width) \
((u64)((_width) < 64 ? ((u64)1 << (_width)) - 1 : (u64)-1))
/* 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
* @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
* @num_of_priorities: number of priorities
*/
struct dpdmai_attr {
int id;
/**
* struct version - DPDMAI version
* @major: DPDMAI major version
* @minor: DPDMAI minor version
*/
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, const struct 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);
#endif /* __FSL_DPDMAI_H */
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