/* SPDX-License-Identifier: GPL-2.0+ */ /* Copyright (c) 2015-2016 Quantenna Communications. All rights reserved. */ #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 __iomem *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; 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_ */