path: root/drivers/thunderbolt/tb.h

/* SPDX-License-Identifier: GPL-2.0 */
/*
 * Thunderbolt driver - bus logic (NHI independent)
 *
 * Copyright (c) 2014 Andreas Noever <andreas.noever@gmail.com>
 * Copyright (C) 2018, Intel Corporation
 */

#ifndef TB_H_
#define TB_H_

#include <linux/nvmem-provider.h>
#include <linux/pci.h>
#include <linux/thunderbolt.h>
#include <linux/uuid.h>
#include <linux/bitfield.h>

#include "tb_regs.h"
#include "ctl.h"
#include "dma_port.h"

/* Keep link controller awake during update */
#define QUIRK_FORCE_POWER_LINK_CONTROLLER		BIT(0)
/* Disable CLx if not supported */
#define QUIRK_NO_CLX					BIT(1)
/* Need to keep power on while USB4 port is in redrive mode */
#define QUIRK_KEEP_POWER_IN_DP_REDRIVE			BIT(2)

/**
 * struct tb_nvm - Structure holding NVM information
 * @dev: Owner of the NVM
 * @major: Major version number of the active NVM portion
 * @minor: Minor version number of the active NVM portion
 * @id: Identifier used with both NVM portions
 * @active: Active portion NVMem device
 * @active_size: Size in bytes of the active NVM
 * @non_active: Non-active portion NVMem device
 * @buf: Buffer where the NVM image is stored before it is written to
 *	 the actual NVM flash device
 * @buf_data_start: Where the actual image starts after skipping
 *		    possible headers
 * @buf_data_size: Number of bytes actually consumed by the new NVM
 *		   image
 * @authenticating: The device is authenticating the new NVM
 * @flushed: The image has been flushed to the storage area
 * @vops: Router vendor specific NVM operations (optional)
 *
 * The user of this structure needs to handle serialization of possible
 * concurrent access.
 */
struct tb_nvm {
	struct device *dev;
	u32 major;
	u32 minor;
	int id;
	struct nvmem_device *active;
	size_t active_size;
	struct nvmem_device *non_active