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torvalds
GitHub Repository: torvalds/linux
 Path: blob/master/net/nfc/hci/hci.h
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/* SPDX-License-Identifier: GPL-2.0-or-later */

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/*

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 * Copyright (C) 2012  Intel Corporation. All rights reserved.

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 */

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#ifndef __LOCAL_HCI_H

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#define __LOCAL_HCI_H

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#include <net/nfc/hci.h>

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struct gate_pipe_map {

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	u8 gate;

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	u8 pipe;

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};

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struct hcp_message {

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	u8 header;		/* type -cmd,evt,rsp- + instruction */

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	u8 data[];

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} __packed;

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struct hcp_packet {

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	u8 header;		/* cbit+pipe */

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	struct hcp_message message;

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} __packed;

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struct hcp_exec_waiter {

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	wait_queue_head_t *wq;

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	bool exec_complete;

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	int exec_result;

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	struct sk_buff *result_skb;

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};

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struct hci_msg {

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	struct list_head msg_l;

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	struct sk_buff_head msg_frags;

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	bool wait_response;

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	data_exchange_cb_t cb;

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	void *cb_context;

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	unsigned long completion_delay;

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};

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struct hci_create_pipe_params {

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	u8 src_gate;

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	u8 dest_host;

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	u8 dest_gate;

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} __packed;

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struct hci_create_pipe_resp {

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	u8 src_host;

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	u8 src_gate;

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	u8 dest_host;

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	u8 dest_gate;

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	u8 pipe;

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} __packed;

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struct hci_delete_pipe_noti {

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	u8 pipe;

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} __packed;

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struct hci_all_pipe_cleared_noti {

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	u8 host;

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} __packed;

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#define NFC_HCI_FRAGMENT	0x7f

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#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))

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#define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)

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#define HCP_MSG_GET_CMD(header) (header & 0x3f)

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int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,

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			   u8 type, u8 instruction,

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			   const u8 *payload, size_t payload_len,

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			   data_exchange_cb_t cb, void *cb_context,

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			   unsigned long completion_delay);

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void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,

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			    u8 instruction, struct sk_buff *skb);

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/* HCP headers */

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#define NFC_HCI_HCP_PACKET_HEADER_LEN	1

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#define NFC_HCI_HCP_MESSAGE_HEADER_LEN	1

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#define NFC_HCI_HCP_HEADER_LEN		2

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/* HCP types */

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#define NFC_HCI_HCP_COMMAND	0x00

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#define NFC_HCI_HCP_EVENT	0x01

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#define NFC_HCI_HCP_RESPONSE	0x02

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/* Generic commands */

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#define NFC_HCI_ANY_SET_PARAMETER	0x01

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#define NFC_HCI_ANY_GET_PARAMETER	0x02

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#define NFC_HCI_ANY_OPEN_PIPE		0x03

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#define NFC_HCI_ANY_CLOSE_PIPE		0x04

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/* Reader RF commands */

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#define NFC_HCI_WR_XCHG_DATA		0x10

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/* Admin commands */

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#define NFC_HCI_ADM_CREATE_PIPE			0x10

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#define NFC_HCI_ADM_DELETE_PIPE			0x11

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#define NFC_HCI_ADM_NOTIFY_PIPE_CREATED		0x12

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#define NFC_HCI_ADM_NOTIFY_PIPE_DELETED		0x13

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#define NFC_HCI_ADM_CLEAR_ALL_PIPE		0x14

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#define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED	0x15

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/* Generic responses */

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#define NFC_HCI_ANY_OK				0x00

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#define NFC_HCI_ANY_E_NOT_CONNECTED		0x01

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#define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN		0x02

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#define NFC_HCI_ANY_E_NOK			0x03

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#define NFC_HCI_ANY_E_PIPES_FULL		0x04

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#define NFC_HCI_ANY_E_REG_PAR_UNKNOWN		0x05

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#define NFC_HCI_ANY_E_PIPE_NOT_OPENED		0x06

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#define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED		0x07

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#define NFC_HCI_ANY_E_INHIBITED			0x08

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#define NFC_HCI_ANY_E_TIMEOUT			0x09

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#define NFC_HCI_ANY_E_REG_ACCESS_DENIED		0x0a

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#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED	0x0b

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#endif /* __LOCAL_HCI_H */

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