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/*
* (C) COPYRIGHT 2020 ARM Limited. All rights reserved.
*
* This program is free software and is provided to you under the terms of the
* GNU General Public License version 2 as published by the Free Software
* Foundation, and any use by you of this program is subject to the terms
* of such GNU licence.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, you can access it online at
* http://www.gnu.org/licenses/gpl-2.0.html.
*
* SPDX-License-Identifier: GPL-2.0-only
*/
#ifndef ETHOSU_MAILBOX_H
#define ETHOSU_MAILBOX_H
/****************************************************************************
* Includes
****************************************************************************/
#include "ethosu_core_interface.h"
#include <linux/types.h>
#include <linux/mailbox_client.h>
#include <linux/workqueue.h>
/****************************************************************************
* Types
****************************************************************************/
struct device;
struct ethosu_buffer;
struct ethosu_device;
struct ethosu_core_msg;
struct ethosu_core_queue;
struct resource;
typedef void (*ethosu_mailbox_cb)(void *user_arg);
struct ethosu_mailbox {
struct device *dev;
struct workqueue_struct *wq;
struct work_struct work;
struct ethosu_core_queue __iomem *in_queue;
struct ethosu_core_queue __iomem *out_queue;
struct mbox_client client;
struct mbox_chan *rx;
struct mbox_chan *tx;
ethosu_mailbox_cb callback;
void *user_arg;
};
/****************************************************************************
* Functions
****************************************************************************/
/**
* ethosu_mailbox_init() - Initialize mailbox
*
* Return: 0 on success, else error code.
*/
int ethosu_mailbox_init(struct ethosu_mailbox *mbox,
struct device *dev,
struct resource *in_queue,
struct resource *out_queue,
ethosu_mailbox_cb callback,
void *user_arg);
/**
* ethosu_mailbox_deinit() - Deinitialize mailbox
*/
void ethosu_mailbox_deinit(struct ethosu_mailbox *mbox);
/**
* ethosu_mailbox_read() - Read message from mailbox
*
* Return: 0 message read, else error code.
*/
int ethosu_mailbox_read(struct ethosu_mailbox *mbox,
struct ethosu_core_msg *header,
void *data,
size_t length);
/**
* ethosu_mailbox_reset() - Reset to end of queue
*/
void ethosu_mailbox_reset(struct ethosu_mailbox *mbox);
/**
* ethosu_mailbox_ping() - Send ping message
*
* Return: 0 on success, else error code.
*/
int ethosu_mailbox_ping(struct ethosu_mailbox *mbox);
/**
* ethosu_mailbox_pong() - Send pong response
*
* Return: 0 on success, else error code.
*/
int ethosu_mailbox_pong(struct ethosu_mailbox *mbox);
/**
* ethosu_mailbox_version_response - Send version request
*
* Return: 0 on succes, else error code
*/
int ethosu_mailbox_version_request(struct ethosu_mailbox *mbox);
/**
* ethosu_mailbox_inference() - Send inference
*
* Return: 0 on success, else error code.
*/
int ethosu_mailbox_inference(struct ethosu_mailbox *mbox,
void *user_arg,
uint32_t ifm_count,
struct ethosu_buffer **ifm,
uint32_t ofm_count,
struct ethosu_buffer **ofm,
struct ethosu_buffer *network,
uint8_t *pmu_event_config,
uint8_t pmu_event_config_count,
uint8_t pmu_cycle_counter_enable);
#endif /* ETHOSU_MAILBOX_H */
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