/*
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* Copyright (c) 2015-2016 Quantenna Communications, Inc.
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* All rights reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#ifndef _QTN_FMAC_SHM_IPC_H_
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#define _QTN_FMAC_SHM_IPC_H_
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#include <linux/workqueue.h>
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#include <linux/completion.h>
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#include <linux/mutex.h>
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#include <linux/spinlock.h>
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#include "shm_ipc_defs.h"
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#define QTN_SHM_IPC_ACK_TIMEOUT (2 * HZ)
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struct qtnf_shm_ipc_int {
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void (*fn)(void *arg);
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void *arg;
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};
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struct qtnf_shm_ipc_rx_callback {
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void (*fn)(void *arg, const u8 *buf, size_t len);
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void *arg;
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};
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enum qtnf_shm_ipc_direction {
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QTNF_SHM_IPC_OUTBOUND = BIT(0),
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QTNF_SHM_IPC_INBOUND = BIT(1),
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};
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struct qtnf_shm_ipc {
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struct qtnf_shm_ipc_region __iomem *shm_region;
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enum qtnf_shm_ipc_direction direction;
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size_t tx_packet_count;
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size_t rx_packet_count;
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size_t tx_timeout_count;
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u8 waiting_for_ack;
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u8 rx_data[QTN_IPC_MAX_DATA_SZ] __aligned(sizeof(u32));
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struct qtnf_shm_ipc_int interrupt;
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struct qtnf_shm_ipc_rx_callback rx_callback;
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void (*irq_handler)(struct qtnf_shm_ipc *ipc);
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struct workqueue_struct *workqueue;
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struct work_struct irq_work;
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struct completion tx_completion;
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};
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int qtnf_shm_ipc_init(struct qtnf_shm_ipc *ipc,
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enum qtnf_shm_ipc_direction direction,
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struct qtnf_shm_ipc_region __iomem *shm_region,
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struct workqueue_struct *workqueue,
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const struct qtnf_shm_ipc_int *interrupt,
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const struct qtnf_shm_ipc_rx_callback *rx_callback);
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void qtnf_shm_ipc_free(struct qtnf_shm_ipc *ipc);
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int qtnf_shm_ipc_send(struct qtnf_shm_ipc *ipc, const u8 *buf, size_t size);
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static inline void qtnf_shm_ipc_irq_handler(struct qtnf_shm_ipc *ipc)
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{
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ipc->irq_handler(ipc);
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}
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#endif /* _QTN_FMAC_SHM_IPC_H_ */
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