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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* Copyright 2013-2016 Freescale Semiconductor, Inc.
* Copyright 2017, 2023 NXP
*/
#ifndef _FSL_DPIO_H
#define _FSL_DPIO_H
/* DPIO Version */
#define DPIO_VER_MAJOR 4
#define DPIO_VER_MINOR 2
/* Command IDs */
#define DPIO_CMDID_CLOSE 0x8001
#define DPIO_CMDID_OPEN 0x8031
#define DPIO_CMDID_CREATE 0x9031
#define DPIO_CMDID_DESTROY 0x9831
#define DPIO_CMDID_GET_API_VERSION 0xa031
#define DPIO_CMDID_ENABLE 0x0021
#define DPIO_CMDID_DISABLE 0x0031
#define DPIO_CMDID_GET_ATTR 0x0041
/* Macros for accessing command fields smaller than 1byte */
#define DPIO_MASK(field) \
GENMASK(DPIO_##field##_SHIFT + DPIO_##field##_SIZE - 1, \
DPIO_##field##_SHIFT)
#define dpio_set_field(var, field, val) \
((var) |= (((val) << DPIO_##field##_SHIFT) & DPIO_MASK(field)))
#define dpio_get_field(var, field) \
(((var) & DPIO_MASK(field)) >> DPIO_##field##_SHIFT)
#pragma pack(push, 1)
struct dpio_cmd_open {
__le32 dpio_id;
};
#define DPIO_CHANNEL_MODE_SHIFT 0
#define DPIO_CHANNEL_MODE_SIZE 2
struct dpio_cmd_create {
__le16 pad1;
/* from LSB: channel_mode:2 */
u8 channel_mode;
u8 pad2;
u8 num_priorities;
};
struct dpio_cmd_destroy {
__le32 dpio_id;
};
#define DPIO_ATTR_CHANNEL_MODE_SHIFT 0
#define DPIO_ATTR_CHANNEL_MODE_SIZE 4
struct dpio_rsp_get_attr {
__le32 id;
__le16 qbman_portal_id;
u8 num_priorities;
/* from LSB: channel_mode:4 */
u8 channel_mode;
__le64 qbman_portal_ce_offset;
__le64 qbman_portal_ci_offset;
__le32 qbman_version;
__le32 pad;
__le32 clk;
};
#pragma pack(pop)
/* Data Path I/O Portal API
* Contains initialization APIs and runtime control APIs for DPIO
*/
struct fsl_mc_io;
int dpio_open(struct fsl_mc_io *mc_io, u32 cmd_flags, int dpio_id,
u16 *token);
int dpio_close(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 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;
u8 num_priorities;
};
int dpio_create(struct fsl_mc_io *mc_io, u16 dprc_token, u32 cmd_flags,
const struct dpio_cfg *cfg, u32 *obj_id);
int dpio_destroy(struct fsl_mc_io *mc_io, u16 dprc_token, u32 cmd_flags,
u32 object_id);
int dpio_enable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
int dpio_disable(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token);
/**
* struct dpio_attr - Structure representing DPIO attributes
* @id: DPIO object ID
* @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'
* @qbman_version: QBMAN version
*/
struct dpio_attr {
int id;
u64 qbman_portal_ce_offset;
u64 qbman_portal_ci_offset;
u16 qbman_portal_id;
enum dpio_channel_mode channel_mode;
u8 num_priorities;
u32 qbman_version;
u32 clk;
};
int dpio_get_attributes(struct fsl_mc_io *mc_io, u32 cmd_flags, u16 token,
struct dpio_attr *attr);
int dpio_get_api_version(struct fsl_mc_io *mc_io, u32 cmd_flags,
u16 *major_ver, u16 *minor_ver);
#endif /* _FSL_DPIO_H */
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