MODALIAS=acpi:PNP0700:
  *   'ˆl–Ü4ý( ©³( 	Å€fàB¦-ÿÃƒxO³_†I|¥+ÀÇ  e    '/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2011  Intel Corporation. All rights reserved.
 */

#ifndef __NET_HCI_H
#define __NET_HCI_H

#include <linux/skbuff.h>

#include <net/nfc/nfc.h>

struct nfc_hci_dev;

struct nfc_hci_ops {
	int (*open) (struct nfc_hci_dev *hdev);
	void (*close) (struct nfc_hci_dev *hdev);
	int (*load_session) (struct nfc_hci_dev *hdev);
	int (*hci_ready) (struct nfc_hci_dev *hdev);
	/*
	 * xmit must always send the complete buffer before
	 * returning. Returned result must be 0 for success
	 * or negative for failure.
	 */
	int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
	int (*start_poll) (struct nfc_hci_dev *hdev,
			   u32 im_protocols, u32 tm_protocols);
	void (*stop_poll) (struct nfc_hci_dev *hdev);
	int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target,
			   u8 comm_mode, u8 *gb, size_t gb_len);
	int (*dep_link_down)(struct nfc_hci_dev *hdev);
	int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
				 struct nfc_target *target);
	int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
					   struct nfc_target *target);
	int (*im_transceive) (struct nfc_hci_dev *hdev,
			      struct nfc_target *target, struct sk_buff *skb,
			      data_exchange_cb_t cb, void *cb_context);
	int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb);
	int (*check_presence)(struct nfc_hci_dev *hdev,
			      struct nfc_target *target);
	int (*event_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
			      struct sk_buff *skb);
	void (*cmd_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
			    struct sk_buff *skb);
	int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name);
	int (*discover_se)(struct nfc_hci_dev *dev);
	int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx);
	int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx);
	int (*se_io)(struct nfc_hci_dev *dev, u32 se_idx,
		      u8 *apdu, size_t apdu_length,
		      se_io_cb_t cb, void *cb_context);
};

/* Pipes */
#define NFC_HCI_DO_NOT_CREATE_PIPE	0x81
#define NFC_HCI_INVALID_PIPE	0x80
#define NFC_HCI_INVALID_GATE	0xFF
#define NFC_HCI_INVALID_HOST	0x80
#define NFC_HCI_LINK_MGMT_PIPE	0x00
#define NFC_HCI_ADMIN_PIPE	0x01

struct nfc_hci_gate {
	u8 gate;
	u8 pipe;
};

struct nfc_hci_pipe {
	u8 gate;
	u8 dest_host;
};

#define NFC_HCI_MAX_CUSTOM_GATES	50
/*
 * According to specification 102 622 chapter 4.4 Pipes,
 * the pipe identifier is 7 bits long.
 */
#define NFC_HCI_MAX_PIPES		128
struct nfc_hci_init_data {
	u8 gate_count;
	struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES];
	char session_id[9];
};

typedef int (*xmit) (struct sk_buff *skb, void *cb_data);

#define NFC_HCI_MAX_GATES		256

/*
 * These values can be specified by a driver to indicate it requires some
 * adaptation of the HCI standard.
 *
 * NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params
 */
enum {
	NFC_HCI_QUIRK_SHORT_CLEAR	= 0,
};

struct nfc_hci_dev {
	struct nfc_dev *ndev;

	u32 max_data_link_payload;

	bool shutting_down;

	struct mutex msg_tx_mutex;

	struct list_head msg_tx_queue;

	struct work_struct msg_tx_work;

	struct timer_list cmd_timer;
	struct hci_msg *cmd_pending_msg;

	struct sk_buff_head rx_hcp_frags;

	struct work_struct msg_rx_work;

	struct sk_buff_head msg_rx_queue;

	struct nfc_hci_ops *ops;

	struct nfc_llc *llc;

	struct nfc_hci_init_data init_data;

	void *clientdata;

	u8 gate2pipe[NFC_HCI_MAX_GATES];
	struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES];

	u8 sw_romlib;
	u8 sw_patch;
	u8 sw_flashlib_major;
	u8 sw_flashlib_minor;

	u8 hw_derivative;
	u8 hw_version;
	u8 hw_mpw;
	u8 hw_software;
	u8 hw_bsid;

	int async_cb_type;
	data_exchange_cb_t async_cb;
	void *async_cb_context;

	u8 *gb;
	size_t gb_len;

	unsigned long quirks;
};

/* hci device allocation */
struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
					    struct nfc_hci_init_data *init_data,
					    unsigned long quirks,
					    u32 protocols,
					    const char *llc_