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1/* SPDX-License-Identifier: GPL-2.0+ */2/* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */3 4#ifndef _QTN_FMAC_SHM_IPC_H_5#define _QTN_FMAC_SHM_IPC_H_6 7#include <linux/workqueue.h>8#include <linux/completion.h>9#include <linux/mutex.h>10#include <linux/spinlock.h>11 12#include "shm_ipc_defs.h"13 14#define QTN_SHM_IPC_ACK_TIMEOUT (2 * HZ)15 16struct qtnf_shm_ipc_int {17 void (*fn)(void *arg);18 void *arg;19};20 21struct qtnf_shm_ipc_rx_callback {22 void (*fn)(void *arg, const u8 __iomem *buf, size_t len);23 void *arg;24};25 26enum qtnf_shm_ipc_direction {27 QTNF_SHM_IPC_OUTBOUND = BIT(0),28 QTNF_SHM_IPC_INBOUND = BIT(1),29};30 31struct qtnf_shm_ipc {32 struct qtnf_shm_ipc_region __iomem *shm_region;33 enum qtnf_shm_ipc_direction direction;34 size_t tx_packet_count;35 size_t rx_packet_count;36 37 size_t tx_timeout_count;38 39 u8 waiting_for_ack;40 41 struct qtnf_shm_ipc_int interrupt;42 struct qtnf_shm_ipc_rx_callback rx_callback;43 44 void (*irq_handler)(struct qtnf_shm_ipc *ipc);45 46 struct workqueue_struct *workqueue;47 struct work_struct irq_work;48 struct completion tx_completion;49};50 51int qtnf_shm_ipc_init(struct qtnf_shm_ipc *ipc,52 enum qtnf_shm_ipc_direction direction,53 struct qtnf_shm_ipc_region __iomem *shm_region,54 struct workqueue_struct *workqueue,55 const struct qtnf_shm_ipc_int *interrupt,56 const struct qtnf_shm_ipc_rx_callback *rx_callback);57void qtnf_shm_ipc_free(struct qtnf_shm_ipc *ipc);58int qtnf_shm_ipc_send(struct qtnf_shm_ipc *ipc, const u8 *buf, size_t size);59 60static inline void qtnf_shm_ipc_irq_handler(struct qtnf_shm_ipc *ipc)61{62 ipc->irq_handler(ipc);63}64 65#endif /* _QTN_FMAC_SHM_IPC_H_ */66