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/*
* Copyright (C) 2013-2015 Freescale Semiconductor
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _FSL_DPIO_H
#define _FSL_DPIO_H
/* DPIO Version */
#define DPIO_VER_MAJOR 3
#define DPIO_VER_MINOR 1
/* Command IDs */
#define DPIO_CMDID_CLOSE 0x800
#define DPIO_CMDID_OPEN 0x803
#define DPIO_CMDID_CREATE 0x903
#define DPIO_CMDID_DESTROY 0x900
#define DPIO_CMDID_ENABLE 0x002
#define DPIO_CMDID_DISABLE 0x003
#define DPIO_CMDID_GET_ATTR 0x004
#define DPIO_CMDID_RESET 0x005
/* cmd, param, offset, width, type, arg_name */
#define DPIO_CMD_OPEN(cmd, dpio_id) \
MC_CMD_OP(cmd, 0, 0, 32, int, dpio_id)
/* cmd, param, offset, width, type, arg_name */
#define DPIO_CMD_CREATE(cmd, cfg) \
do { \
MC_CMD_OP(cmd, 0, 16, 2, enum dpio_channel_mode, \
cfg->channel_mode);\
MC_CMD_OP(cmd, 0, 32, 8, uint8_t, cfg->num_priorities);\
} while (0)
/* cmd, param, offset, width, type, arg_name */
#define DPIO_RSP_GET_ATTR(cmd, attr) \
do { \
MC_RSP_OP(cmd, 0, 0, 32, int, attr->id);\
MC_RSP_OP(cmd, 0, 32, 16, uint16_t, attr->qbman_portal_id);\
MC_RSP_OP(cmd, 0, 48, 8, uint8_t, attr->num_priorities);\
MC_RSP_OP(cmd, 0, 56, 4, enum dpio_channel_mode, attr->channel_mode);\
MC_RSP_OP(cmd, 1, 0, 64, uint64_t, attr->qbman_portal_ce_offset);\
MC_RSP_OP(cmd, 2, 0, 64, uint64_t, attr->qbman_portal_ci_offset);\
MC_RSP_OP(cmd, 3, 0, 16, uint16_t, attr->version.major);\
MC_RSP_OP(cmd, 3, 16, 16, uint16_t, attr->version.minor);\
} while (0)
/* Data Path I/O Portal API
* Contains initialization APIs and runtime control APIs for DPIO
*/
struct fsl_mc_io;
/**
* dpio_open() - Open a control session for the specified object
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @dpio_id: DPIO unique ID
* @token: Returned token; use in subsequent API calls
*
* This function can be used to open a control session for an
* already created object; an object may have been declared in
* the DPL or by calling the dpio_create() function.
* This function returns a unique authentication token,
* associated with the specific object ID and the specific MC
* portal; this token must be used in all subsequent commands for
* this specific object.
*
* Return: '0' on Success; Error code otherwise.
*/
int dpio_open(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
int dpio_id,
uint16_t *token);
/**
* dpio_close() - Close the control session of the object
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpio_close(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* enum dpio_channel_mode - DPIO notification channel mode
* @DPIO_NO_CHANNEL: No support for notification channel
* @DPIO_LOCAL_CHANNEL: Notifications on data availability can be received by a
* dedicated channel in the DPIO; user should point the queue's
* destination in the relevant interface to this DPIO
*/
enum dpio_channel_mode {
DPIO_NO_CHANNEL = 0,
DPIO_LOCAL_CHANNEL = 1,
};
/**
* struct dpio_cfg - Structure representing DPIO configuration
* @channel_mode: Notification channel mode
* @num_priorities: Number of priorities for the notification channel (1-8);
* relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
*/
struct dpio_cfg {
enum dpio_channel_mode channel_mode;
uint8_t num_priorities;
};
/**
* dpio_create() - Create the DPIO object.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @cfg: Configuration structure
* @token: Returned token; use in subsequent API calls
*
* Create the DPIO object, allocate required resources and
* perform required initialization.
*
* The object can be created either by declaring it in the
* DPL file, or by calling this function.
*
* This function returns a unique authentication token,
* associated with the specific object ID and the specific MC
* portal; this token must be used in all subsequent calls to
* this specific object. For objects that are created using the
* DPL file, call dpio_open() function to get an authentication
* token first.
*
* Return: '0' on Success; Error code otherwise.
*/
int dpio_create(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
const struct dpio_cfg *cfg,
uint16_t *token);
/**
* dpio_destroy() - Destroy the DPIO object and release all its resources.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_destroy(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* dpio_enable() - Enable the DPIO, allow I/O portal operations.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_enable(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* dpio_disable() - Disable the DPIO, stop any I/O portal operation.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_disable(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* dpio_reset() - Reset the DPIO, returns the object to initial state.
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
*
* Return: '0' on Success; Error code otherwise.
*/
int dpio_reset(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token);
/**
* struct dpio_attr - Structure representing DPIO attributes
* @id: DPIO object ID
* @version: DPIO version
* @qbman_portal_ce_offset: offset of the software portal cache-enabled area
* @qbman_portal_ci_offset: offset of the software portal cache-inhibited area
* @qbman_portal_id: Software portal ID
* @channel_mode: Notification channel mode
* @num_priorities: Number of priorities for the notification channel (1-8);
* relevant only if 'channel_mode = DPIO_LOCAL_CHANNEL'
*/
struct dpio_attr {
int id;
/**
* struct version - DPIO version
* @major: DPIO major version
* @minor: DPIO minor version
*/
struct {
uint16_t major;
uint16_t minor;
} version;
uint64_t qbman_portal_ce_offset;
uint64_t qbman_portal_ci_offset;
uint16_t qbman_portal_id;
enum dpio_channel_mode channel_mode;
uint8_t num_priorities;
};
/**
* dpio_get_attributes() - Retrieve DPIO attributes
* @mc_io: Pointer to MC portal's I/O object
* @cmd_flags: Command flags; one or more of 'MC_CMD_FLAG_'
* @token: Token of DPIO object
* @attr: Returned object's attributes
*
* Return: '0' on Success; Error code otherwise
*/
int dpio_get_attributes(struct fsl_mc_io *mc_io,
uint32_t cmd_flags,
uint16_t token,
struct dpio_attr *attr);
#endif /* _FSL_DPIO_H */
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