/* SPDX-License-Identifier: GPL-2.0-only * * Copyright (C) 2020-2021 Intel Corporation. */ #ifndef IOSM_IPC_TRACE_H #define IOSM_IPC_TRACE_H #include <linux/debugfs.h> #include <linux/relay.h> #include "iosm_ipc_chnl_cfg.h" #include "iosm_ipc_imem_ops.h" /** * enum trace_ctrl_mode - State of trace channel * @TRACE_DISABLE: mode for disable trace * @TRACE_ENABLE: mode for enable trace */ enum trace_ctrl_mode { TRACE_DISABLE = 0, TRACE_ENABLE, }; /** * struct iosm_trace - Struct for trace interface * @ipc_rchan: Pointer to relay channel * @ctrl_file: Pointer to trace control file * @ipc_imem: Imem instance * @dev: Pointer to device struct * @channel: Channel instance * @chl_id: Channel Identifier * @trc_mutex: Mutex used for read and write mode * @mode: Mode for enable and disable trace */ struct iosm_trace { struct rchan *ipc_rchan; struct dentry *ctrl_file; struct iosm_imem *ipc_imem; struct device *dev; struct ipc_mem_channel *channel; enum ipc_channel_id chl_id; struct mutex trc_mutex; /* Mutex used for read and write mode */ enum trace_ctrl_mode mode; }; #ifdef CONFIG_WWAN_DEBUGFS static inline bool ipc_is_trace_channel(struct iosm_imem *ipc_mem, u16 chl_id) { return ipc_mem->trace && ipc_mem->trace->chl_id == chl_id; } struct iosm_trace *ipc_trace_init(struct iosm_imem *ipc_imem); void ipc_trace_deinit(struct iosm_trace *ipc_trace); void ipc_trace_port_rx(struct iosm_imem *ipc_imem, struct sk_buff *skb); #else static inline bool ipc_is_trace_channel(struct iosm_imem *ipc_mem, u16 chl_id) { return false; } static inline void ipc_trace_port_rx(struct iosm_imem *ipc_imem, struct sk_buff *skb) { dev_kfree_skb(skb); } #endif #endif