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kernel/linux-imx6_3.14.28/net/nfc/hci/hci.h 3.36 KB
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  /*
   * Copyright (C) 2012  Intel Corporation. All rights reserved.
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or
   * (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, see <http://www.gnu.org/licenses/>.
   */
  
  #ifndef __LOCAL_HCI_H
  #define __LOCAL_HCI_H
  
  #include <net/nfc/hci.h>
  
  struct gate_pipe_map {
  	u8 gate;
  	u8 pipe;
  };
  
  struct hcp_message {
  	u8 header;		/* type -cmd,evt,rsp- + instruction */
  	u8 data[];
  } __packed;
  
  struct hcp_packet {
  	u8 header;		/* cbit+pipe */
  	struct hcp_message message;
  } __packed;
  
  struct hcp_exec_waiter {
  	wait_queue_head_t *wq;
  	bool exec_complete;
  	int exec_result;
  	struct sk_buff *result_skb;
  };
  
  struct hci_msg {
  	struct list_head msg_l;
  	struct sk_buff_head msg_frags;
  	bool wait_response;
  	data_exchange_cb_t cb;
  	void *cb_context;
  	unsigned long completion_delay;
  };
  
  struct hci_create_pipe_params {
  	u8 src_gate;
  	u8 dest_host;
  	u8 dest_gate;
  } __packed;
  
  struct hci_create_pipe_resp {
  	u8 src_host;
  	u8 src_gate;
  	u8 dest_host;
  	u8 dest_gate;
  	u8 pipe;
  } __packed;
  
  #define NFC_HCI_FRAGMENT	0x7f
  
  #define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
  #define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
  #define HCP_MSG_GET_CMD(header) (header & 0x3f)
  
  int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
  			   u8 type, u8 instruction,
  			   const u8 *payload, size_t payload_len,
  			   data_exchange_cb_t cb, void *cb_context,
  			   unsigned long completion_delay);
  
  u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe);
  
  void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
  			    u8 instruction, struct sk_buff *skb);
  
  /* HCP headers */
  #define NFC_HCI_HCP_PACKET_HEADER_LEN	1
  #define NFC_HCI_HCP_MESSAGE_HEADER_LEN	1
  #define NFC_HCI_HCP_HEADER_LEN		2
  
  /* HCP types */
  #define NFC_HCI_HCP_COMMAND	0x00
  #define NFC_HCI_HCP_EVENT	0x01
  #define NFC_HCI_HCP_RESPONSE	0x02
  
  /* Generic commands */
  #define NFC_HCI_ANY_SET_PARAMETER	0x01
  #define NFC_HCI_ANY_GET_PARAMETER	0x02
  #define NFC_HCI_ANY_OPEN_PIPE		0x03
  #define NFC_HCI_ANY_CLOSE_PIPE		0x04
  
  /* Reader RF commands */
  #define NFC_HCI_WR_XCHG_DATA		0x10
  
  /* Admin commands */
  #define NFC_HCI_ADM_CREATE_PIPE			0x10
  #define NFC_HCI_ADM_DELETE_PIPE			0x11
  #define NFC_HCI_ADM_NOTIFY_PIPE_CREATED		0x12
  #define NFC_HCI_ADM_NOTIFY_PIPE_DELETED		0x13
  #define NFC_HCI_ADM_CLEAR_ALL_PIPE		0x14
  #define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED	0x15
  
  /* Generic responses */
  #define NFC_HCI_ANY_OK				0x00
  #define NFC_HCI_ANY_E_NOT_CONNECTED		0x01
  #define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN		0x02
  #define NFC_HCI_ANY_E_NOK			0x03
  #define NFC_HCI_ANY_E_PIPES_FULL		0x04
  #define NFC_HCI_ANY_E_REG_PAR_UNKNOWN		0x05
  #define NFC_HCI_ANY_E_PIPE_NOT_OPENED		0x06
  #define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED		0x07
  #define NFC_HCI_ANY_E_INHIBITED			0x08
  #define NFC_HCI_ANY_E_TIMEOUT			0x09
  #define NFC_HCI_ANY_E_REG_ACCESS_DENIED		0x0a
  #define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED	0x0b
  
  #endif /* __LOCAL_HCI_H */