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/*
* Copyright (c) 2015-2016 Quantenna Communications, Inc.
* All rights reserved.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* 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.
*
*/
#ifndef _QTN_FMAC_SHM_IPC_H_
#define _QTN_FMAC_SHM_IPC_H_
#include <linux/workqueue.h>
#include <linux/completion.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>
#include "shm_ipc_defs.h"
#define QTN_SHM_IPC_ACK_TIMEOUT (2 * HZ)
struct qtnf_shm_ipc_int {
void (*fn)(void *arg);
void *arg;
};
struct qtnf_shm_ipc_rx_callback {
void (*fn)(void *arg, const u8 *buf, size_t len);
void *arg;
};
enum qtnf_shm_ipc_direction {
QTNF_SHM_IPC_OUTBOUND = BIT(0),
QTNF_SHM_IPC_INBOUND = BIT(1),
};
struct qtnf_shm_ipc {
struct qtnf_shm_ipc_region __iomem *shm_region;
enum qtnf_shm_ipc_direction direction;
size_t tx_packet_count;
size_t rx_packet_count;
size_t tx_timeout_count;
u8 waiting_for_ack;
u8 rx_data[QTN_IPC_MAX_DATA_SZ] __aligned(sizeof(u32));
struct qtnf_shm_ipc_int interrupt;
struct qtnf_shm_ipc_rx_callback rx_callback;
void (*irq_handler)(struct qtnf_shm_ipc *ipc);
struct workqueue_struct *workqueue;
struct work_struct irq_work;
struct completion tx_completion;
};
int qtnf_shm_ipc_init(struct qtnf_shm_ipc *ipc,
enum qtnf_shm_ipc_direction direction,
struct qtnf_shm_ipc_region __iomem *shm_region,
struct workqueue_struct *workqueue,
const struct qtnf_shm_ipc_int *interrupt,
const struct qtnf_shm_ipc_rx_callback *rx_callback);
void qtnf_shm_ipc_free(struct qtnf_shm_ipc *ipc);
int qtnf_shm_ipc_send(struct qtnf_shm_ipc *ipc, const u8 *buf, size_t size);
static inline void qtnf_shm_ipc_irq_handler(struct qtnf_shm_ipc *ipc)
{
ipc->irq_handler(ipc);
}
#endif /* _QTN_FMAC_SHM_IPC_H_ */
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