path: root/drivers/thunderbolt/tb.c

// SPDX-License-Identifier: GPL-2.0
/*
 * Thunderbolt driver - bus logic (NHI independent)
 *
 * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
 * Copyright (C) 2019, Intel Corporation
 */

#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/delay.h>
#include <linux/pm_runtime.h>

#include "tb.h"
#include "tb_regs.h"
#include "tunnel.h"

/**
 * struct tb_cm - Simple Thunderbolt connection manager
 * @tunnel_list: List of active tunnels
 * @dp_resources: List of available DP resources for DP tunneling
 * @hotplug_active: tb_handle_hotplug will stop progressing plug
 *		    events and exit if this is not set (it needs to
 *		    acquire the lock one more time). Used to drain wq
 *		    after cfg has been paused.
 * @remove_work: Work used to remove any unplugged routers after
 *		 runtime resume
 */
struct tb_cm {
	struct list_head tunnel_list;
	struct list_head dp_resources;
	bool hotplug_active;
	struct delayed_work remove_work;
};

static inline struct tb *tcm_to_tb(struct tb_cm *tcm)
{
	return ((void *)tcm -