include/net/nfc/nci.h - kernel/msm - Gitiles

 /*
  *  The NFC Controller Interface is the communication protocol between an
  *  NFC Controller (NFCC) and a Device Host (DH).
  *
  *  Copyright (C) 2011 Texas Instruments, Inc.
  *
  *  Written by Ilan Elias <ilane@ti.com>
  *
  *  Acknowledgements:
  *  This file is based on hci.h, which was written
  *  by Maxim Krasnyansky.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2
  *  as published by the Free Software Foundation
  *
  *  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, write to the Free Software
  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  *
  */

 #ifndef __NCI_H
 #define __NCI_H

 /* NCI constants */
 #define NCI_MAX_NUM_MAPPING_CONFIGS				10
 #define NCI_MAX_NUM_RF_CONFIGS					10
 #define NCI_MAX_NUM_CONN					10

 /* NCI Status Codes */
 #define NCI_STATUS_OK						0x00
 #define NCI_STATUS_REJECTED					0x01
 #define NCI_STATUS_RF_FRAME_CORRUPTED				0x02
 #define NCI_STATUS_FAILED					0x03
 #define NCI_STATUS_NOT_INITIALIZED				0x04
 #define NCI_STATUS_SYNTAX_ERROR					0x05
 #define NCI_STATUS_SEMANTIC_ERROR				0x06
 #define NCI_STATUS_UNKNOWN_GID					0x07
 #define NCI_STATUS_UNKNOWN_OID					0x08
 #define NCI_STATUS_INVALID_PARAM				0x09
 #define NCI_STATUS_MESSAGE_SIZE_EXCEEDED			0x0a
 /* Discovery Specific Status Codes */
 #define NCI_STATUS_DISCOVERY_ALREADY_STARTED			0xa0
 #define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED		0xa1
 #define NCI_STATUS_DISCOVERY_TEAR_DOWN				0xa2
 /* RF Interface Specific Status Codes */
 #define NCI_STATUS_RF_TRANSMISSION_ERROR			0xb0
 #define NCI_STATUS_RF_PROTOCOL_ERROR				0xb1
 #define NCI_STATUS_RF_TIMEOUT_ERROR				0xb2
 /* NFCEE Interface Specific Status Codes */
 #define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED		0xc0
 #define NCI_STATUS_NFCEE_TRANSMISSION_ERROR			0xc1
 #define NCI_STATUS_NFCEE_PROTOCOL_ERROR				0xc2
 #define NCI_STATUS_NFCEE_TIMEOUT_ERROR				0xc3

 /* NCI RF Technology and Mode */
 #define NCI_NFC_A_PASSIVE_POLL_MODE				0x00
 #define NCI_NFC_B_PASSIVE_POLL_MODE				0x01
 #define NCI_NFC_F_PASSIVE_POLL_MODE				0x02
 #define NCI_NFC_A_ACTIVE_POLL_MODE				0x03
 #define NCI_NFC_F_ACTIVE_POLL_MODE				0x05
 #define NCI_NFC_15693_PASSIVE_POLL_MODE				0x06
 #define NCI_NFC_A_PASSIVE_LISTEN_MODE				0x80
 #define NCI_NFC_B_PASSIVE_LISTEN_MODE				0x81
 #define NCI_NFC_F_PASSIVE_LISTEN_MODE				0x82
 #define NCI_NFC_A_ACTIVE_LISTEN_MODE				0x83
 #define NCI_NFC_F_ACTIVE_LISTEN_MODE				0x85
 #define NCI_NFC_15693_PASSIVE_LISTEN_MODE			0x86

 /* NCI RF Technologies */
 #define NCI_NFC_RF_TECHNOLOGY_A					0x00
 #define NCI_NFC_RF_TECHNOLOGY_B					0x01
 #define NCI_NFC_RF_TECHNOLOGY_F					0x02
 #define NCI_NFC_RF_TECHNOLOGY_15693				0x03

 /* NCI Bit Rates */
 #define NCI_NFC_BIT_RATE_106					0x00
 #define NCI_NFC_BIT_RATE_212					0x01
 #define NCI_NFC_BIT_RATE_424					0x02
 #define NCI_NFC_BIT_RATE_848					0x03
 #define NCI_NFC_BIT_RATE_1695					0x04
 #define NCI_NFC_BIT_RATE_3390					0x05
 #define NCI_NFC_BIT_RATE_6780					0x06

 /* NCI RF Protocols */
 #define NCI_RF_PROTOCOL_UNKNOWN					0x00
 #define NCI_RF_PROTOCOL_T1T					0x01
 #define NCI_RF_PROTOCOL_T2T					0x02
 #define NCI_RF_PROTOCOL_T3T					0x03
 #define NCI_RF_PROTOCOL_ISO_DEP					0x04
 #define NCI_RF_PROTOCOL_NFC_DEP					0x05

 /* NCI RF Interfaces */
 #define NCI_RF_INTERFACE_NFCEE_DIRECT				0x00
 #define NCI_RF_INTERFACE_FRAME					0x01
 #define NCI_RF_INTERFACE_ISO_DEP				0x02
 #define NCI_RF_INTERFACE_NFC_DEP				0x03

 /* NCI Reset types */
 #define NCI_RESET_TYPE_KEEP_CONFIG				0x00
 #define NCI_RESET_TYPE_RESET_CONFIG				0x01

 /* NCI Static RF connection ID */
 #define NCI_STATIC_RF_CONN_ID					0x00

 /* NCI Data Flow Control */
 #define NCI_DATA_FLOW_CONTROL_NOT_USED				0xff

 /* NCI RF_DISCOVER_MAP_CMD modes */
 #define NCI_DISC_MAP_MODE_POLL					0x01
 #define NCI_DISC_MAP_MODE_LISTEN				0x02

 /* NCI Discover Notification Type */
 #define NCI_DISCOVER_NTF_TYPE_LAST				0x00
 #define NCI_DISCOVER_NTF_TYPE_LAST_NFCC				0x01
 #define NCI_DISCOVER_NTF_TYPE_MORE				0x02

 /* NCI Deactivation Type */
 #define NCI_DEACTIVATE_TYPE_IDLE_MODE				0x00
 #define NCI_DEACTIVATE_TYPE_SLEEP_MODE				0x01
 #define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE			0x02
 #define NCI_DEACTIVATE_TYPE_DISCOVERY				0x03

 /* Message Type (MT) */
 #define NCI_MT_DATA_PKT						0x00
 #define NCI_MT_CMD_PKT						0x01
 #define NCI_MT_RSP_PKT						0x02
 #define NCI_MT_NTF_PKT						0x03

 #define nci_mt(hdr)			(((hdr)[0]>>5)&0x07)
 #define nci_mt_set(hdr, mt)		((hdr)[0] |= (__u8)(((mt)&0x07)<<5))

 /* Packet Boundary Flag (PBF) */
 #define NCI_PBF_LAST						0x00
 #define NCI_PBF_CONT						0x01

 #define nci_pbf(hdr)			(__u8)(((hdr)[0]>>4)&0x01)
 #define nci_pbf_set(hdr, pbf)		((hdr)[0] |= (__u8)(((pbf)&0x01)<<4))

 /* Control Opcode manipulation */
 #define nci_opcode_pack(gid, oid)	(__u16)((((__u16)((gid)&0x0f))<<8)|\
 					((__u16)((oid)&0x3f)))
 #define nci_opcode(hdr)			nci_opcode_pack(hdr[0], hdr[1])
 #define nci_opcode_gid(op)		(__u8)(((op)&0x0f00)>>8)
 #define nci_opcode_oid(op)		(__u8)((op)&0x003f)

 /* Payload Length */
 #define nci_plen(hdr)			(__u8)((hdr)[2])

 /* Connection ID */
 #define nci_conn_id(hdr)		(__u8)(((hdr)[0])&0x0f)

 /* GID values */
 #define NCI_GID_CORE						0x0
 #define NCI_GID_RF_MGMT						0x1
 #define NCI_GID_NFCEE_MGMT					0x2
 #define NCI_GID_PROPRIETARY					0xf

 /* ---- NCI Packet structures ---- */
 #define NCI_CTRL_HDR_SIZE					3
 #define NCI_DATA_HDR_SIZE					3

 struct nci_ctrl_hdr {
 	__u8	gid;		/* MT & PBF & GID */
 	__u8	oid;
 	__u8	plen;
 } __packed;

 struct nci_data_hdr {
 	__u8	conn_id;	/* MT & PBF & ConnID */
 	__u8	rfu;
 	__u8	plen;
 } __packed;

 /* ------------------------ */
 /* -----  NCI Commands ---- */
 /* ------------------------ */
 #define NCI_OP_CORE_RESET_CMD		nci_opcode_pack(NCI_GID_CORE, 0x00)
 struct nci_core_reset_cmd {
 	__u8	reset_type;
 } __packed;

 #define NCI_OP_CORE_INIT_CMD		nci_opcode_pack(NCI_GID_CORE, 0x01)

 #define NCI_OP_RF_DISCOVER_MAP_CMD	nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
 struct disc_map_config {
 	__u8	rf_protocol;
 	__u8	mode;
 	__u8	rf_interface;
 } __packed;

 struct nci_rf_disc_map_cmd {
 	__u8				num_mapping_configs;
 	struct disc_map_config		mapping_configs
 					[NCI_MAX_NUM_MAPPING_CONFIGS];
 } __packed;

 #define NCI_OP_RF_DISCOVER_CMD		nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
 struct disc_config {
 	__u8	rf_tech_and_mode;
 	__u8	frequency;
 } __packed;

 struct nci_rf_disc_cmd {
 	__u8				num_disc_configs;
 	struct disc_config		disc_configs[NCI_MAX_NUM_RF_CONFIGS];
 } __packed;

 #define NCI_OP_RF_DISCOVER_SELECT_CMD	nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
 struct nci_rf_discover_select_cmd {
 	__u8	rf_discovery_id;
 	__u8	rf_protocol;
 	__u8	rf_interface;
 } __packed;

 #define NCI_OP_RF_DEACTIVATE_CMD	nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
 struct nci_rf_deactivate_cmd {
 	__u8	type;
 } __packed;

 /* ----------------------- */
 /* ---- NCI Responses ---- */
 /* ----------------------- */
 #define NCI_OP_CORE_RESET_RSP		nci_opcode_pack(NCI_GID_CORE, 0x00)
 struct nci_core_reset_rsp {
 	__u8	status;
 	__u8	nci_ver;
 	__u8	config_status;
 } __packed;

 #define NCI_OP_CORE_INIT_RSP		nci_opcode_pack(NCI_GID_CORE, 0x01)
 struct nci_core_init_rsp_1 {
 	__u8	status;
 	__le32	nfcc_features;
 	__u8	num_supported_rf_interfaces;
 	__u8	supported_rf_interfaces[0];	/* variable size array */
 	/* continuted in nci_core_init_rsp_2 */
 } __packed;

 struct nci_core_init_rsp_2 {
 	__u8	max_logical_connections;
 	__le16	max_routing_table_size;
 	__u8	max_ctrl_pkt_payload_len;
 	__le16	max_size_for_large_params;
 	__u8	manufact_id;
 	__le32	manufact_specific_info;
 } __packed;

 #define NCI_OP_RF_DISCOVER_MAP_RSP	nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)

 #define NCI_OP_RF_DISCOVER_RSP		nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)

 #define NCI_OP_RF_DISCOVER_SELECT_RSP	nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)

 #define NCI_OP_RF_DEACTIVATE_RSP	nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)

 /* --------------------------- */
 /* ---- NCI Notifications ---- */
 /* --------------------------- */
 #define NCI_OP_CORE_CONN_CREDITS_NTF	nci_opcode_pack(NCI_GID_CORE, 0x06)
 struct conn_credit_entry {
 	__u8	conn_id;
 	__u8	credits;
 } __packed;

 struct nci_core_conn_credit_ntf {
 	__u8				num_entries;
 	struct conn_credit_entry	conn_entries[NCI_MAX_NUM_CONN];
 } __packed;

 #define NCI_OP_CORE_GENERIC_ERROR_NTF	nci_opcode_pack(NCI_GID_CORE, 0x07)

 #define NCI_OP_CORE_INTF_ERROR_NTF	nci_opcode_pack(NCI_GID_CORE, 0x08)
 struct nci_core_intf_error_ntf {
 	__u8	status;
 	__u8	conn_id;
 } __packed;

 #define NCI_OP_RF_DISCOVER_NTF		nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
 struct rf_tech_specific_params_nfca_poll {
 	__u16	sens_res;
 	__u8	nfcid1_len;	/* 0, 4, 7, or 10 Bytes */
 	__u8	nfcid1[10];
 	__u8	sel_res_len;	/* 0 or 1 Bytes */
 	__u8	sel_res;
 } __packed;

 struct rf_tech_specific_params_nfcb_poll {
 	__u8	sensb_res_len;
 	__u8	sensb_res[12];	/* 11 or 12 Bytes */
 } __packed;

 struct rf_tech_specific_params_nfcf_poll {
 	__u8	bit_rate;
 	__u8	sensf_res_len;
 	__u8	sensf_res[18];	/* 16 or 18 Bytes */
 } __packed;

 struct nci_rf_discover_ntf {
 	__u8	rf_discovery_id;
 	__u8	rf_protocol;
 	__u8	rf_tech_and_mode;
 	__u8	rf_tech_specific_params_len;

 	union {
 		struct rf_tech_specific_params_nfca_poll nfca_poll;
 		struct rf_tech_specific_params_nfcb_poll nfcb_poll;
 		struct rf_tech_specific_params_nfcf_poll nfcf_poll;
 	} rf_tech_specific_params;

 	__u8	ntf_type;
 } __packed;

 #define NCI_OP_RF_INTF_ACTIVATED_NTF	nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
 struct activation_params_nfca_poll_iso_dep {
 	__u8	rats_res_len;
 	__u8	rats_res[20];
 };

 struct activation_params_nfcb_poll_iso_dep {
 	__u8	attrib_res_len;
 	__u8	attrib_res[50];
 };

 struct nci_rf_intf_activated_ntf {
 	__u8	rf_discovery_id;
 	__u8	rf_interface;
 	__u8	rf_protocol;
 	__u8	activation_rf_tech_and_mode;
 	__u8	max_data_pkt_payload_size;
 	__u8	initial_num_credits;
 	__u8	rf_tech_specific_params_len;

 	union {
 		struct rf_tech_specific_params_nfca_poll nfca_poll;
 		struct rf_tech_specific_params_nfcb_poll nfcb_poll;
 		struct rf_tech_specific_params_nfcf_poll nfcf_poll;
 	} rf_tech_specific_params;

 	__u8	data_exch_rf_tech_and_mode;
 	__u8	data_exch_tx_bit_rate;
 	__u8	data_exch_rx_bit_rate;
 	__u8	activation_params_len;

 	union {
 		struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
 		struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
 	} activation_params;

 } __packed;

 #define NCI_OP_RF_DEACTIVATE_NTF	nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
 struct nci_rf_deactivate_ntf {
 	__u8	type;
 	__u8	reason;
 } __packed;

 #endif /* __NCI_H */
	/*
	* The NFC Controller Interface is the communication protocol between an
	* NFC Controller (NFCC) and a Device Host (DH).
	*
	* Copyright (C) 2011 Texas Instruments, Inc.
	*
	* Written by Ilan Elias <ilane@ti.com>
	*
	* Acknowledgements:
	* This file is based on hci.h, which was written
	* by Maxim Krasnyansky.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2
	* as published by the Free Software Foundation
	*
	* 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, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*
	*/

	#ifndef __NCI_H
	#define __NCI_H

	/* NCI constants */
	#define NCI_MAX_NUM_MAPPING_CONFIGS 10
	#define NCI_MAX_NUM_RF_CONFIGS 10
	#define NCI_MAX_NUM_CONN 10

	/* NCI Status Codes */
	#define NCI_STATUS_OK 0x00
	#define NCI_STATUS_REJECTED 0x01
	#define NCI_STATUS_RF_FRAME_CORRUPTED 0x02
	#define NCI_STATUS_FAILED 0x03
	#define NCI_STATUS_NOT_INITIALIZED 0x04
	#define NCI_STATUS_SYNTAX_ERROR 0x05
	#define NCI_STATUS_SEMANTIC_ERROR 0x06
	#define NCI_STATUS_UNKNOWN_GID 0x07
	#define NCI_STATUS_UNKNOWN_OID 0x08
	#define NCI_STATUS_INVALID_PARAM 0x09
	#define NCI_STATUS_MESSAGE_SIZE_EXCEEDED 0x0a
	/* Discovery Specific Status Codes */
	#define NCI_STATUS_DISCOVERY_ALREADY_STARTED 0xa0
	#define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED 0xa1
	#define NCI_STATUS_DISCOVERY_TEAR_DOWN 0xa2
	/* RF Interface Specific Status Codes */
	#define NCI_STATUS_RF_TRANSMISSION_ERROR 0xb0
	#define NCI_STATUS_RF_PROTOCOL_ERROR 0xb1
	#define NCI_STATUS_RF_TIMEOUT_ERROR 0xb2
	/* NFCEE Interface Specific Status Codes */
	#define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED 0xc0
	#define NCI_STATUS_NFCEE_TRANSMISSION_ERROR 0xc1
	#define NCI_STATUS_NFCEE_PROTOCOL_ERROR 0xc2
	#define NCI_STATUS_NFCEE_TIMEOUT_ERROR 0xc3

	/* NCI RF Technology and Mode */
	#define NCI_NFC_A_PASSIVE_POLL_MODE 0x00
	#define NCI_NFC_B_PASSIVE_POLL_MODE 0x01
	#define NCI_NFC_F_PASSIVE_POLL_MODE 0x02
	#define NCI_NFC_A_ACTIVE_POLL_MODE 0x03
	#define NCI_NFC_F_ACTIVE_POLL_MODE 0x05
	#define NCI_NFC_15693_PASSIVE_POLL_MODE 0x06
	#define NCI_NFC_A_PASSIVE_LISTEN_MODE 0x80
	#define NCI_NFC_B_PASSIVE_LISTEN_MODE 0x81
	#define NCI_NFC_F_PASSIVE_LISTEN_MODE 0x82
	#define NCI_NFC_A_ACTIVE_LISTEN_MODE 0x83
	#define NCI_NFC_F_ACTIVE_LISTEN_MODE 0x85
	#define NCI_NFC_15693_PASSIVE_LISTEN_MODE 0x86

	/* NCI RF Technologies */
	#define NCI_NFC_RF_TECHNOLOGY_A 0x00
	#define NCI_NFC_RF_TECHNOLOGY_B 0x01
	#define NCI_NFC_RF_TECHNOLOGY_F 0x02
	#define NCI_NFC_RF_TECHNOLOGY_15693 0x03

	/* NCI Bit Rates */
	#define NCI_NFC_BIT_RATE_106 0x00
	#define NCI_NFC_BIT_RATE_212 0x01
	#define NCI_NFC_BIT_RATE_424 0x02
	#define NCI_NFC_BIT_RATE_848 0x03
	#define NCI_NFC_BIT_RATE_1695 0x04
	#define NCI_NFC_BIT_RATE_3390 0x05
	#define NCI_NFC_BIT_RATE_6780 0x06

	/* NCI RF Protocols */
	#define NCI_RF_PROTOCOL_UNKNOWN 0x00
	#define NCI_RF_PROTOCOL_T1T 0x01
	#define NCI_RF_PROTOCOL_T2T 0x02
	#define NCI_RF_PROTOCOL_T3T 0x03
	#define NCI_RF_PROTOCOL_ISO_DEP 0x04
	#define NCI_RF_PROTOCOL_NFC_DEP 0x05

	/* NCI RF Interfaces */
	#define NCI_RF_INTERFACE_NFCEE_DIRECT 0x00
	#define NCI_RF_INTERFACE_FRAME 0x01
	#define NCI_RF_INTERFACE_ISO_DEP 0x02
	#define NCI_RF_INTERFACE_NFC_DEP 0x03

	/* NCI Reset types */
	#define NCI_RESET_TYPE_KEEP_CONFIG 0x00
	#define NCI_RESET_TYPE_RESET_CONFIG 0x01

	/* NCI Static RF connection ID */
	#define NCI_STATIC_RF_CONN_ID 0x00

	/* NCI Data Flow Control */
	#define NCI_DATA_FLOW_CONTROL_NOT_USED 0xff

	/* NCI RF_DISCOVER_MAP_CMD modes */
	#define NCI_DISC_MAP_MODE_POLL 0x01
	#define NCI_DISC_MAP_MODE_LISTEN 0x02

	/* NCI Discover Notification Type */
	#define NCI_DISCOVER_NTF_TYPE_LAST 0x00
	#define NCI_DISCOVER_NTF_TYPE_LAST_NFCC 0x01
	#define NCI_DISCOVER_NTF_TYPE_MORE 0x02

	/* NCI Deactivation Type */
	#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
	#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
	#define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE 0x02
	#define NCI_DEACTIVATE_TYPE_DISCOVERY 0x03

	/* Message Type (MT) */
	#define NCI_MT_DATA_PKT 0x00
	#define NCI_MT_CMD_PKT 0x01
	#define NCI_MT_RSP_PKT 0x02
	#define NCI_MT_NTF_PKT 0x03

	#define nci_mt(hdr) (((hdr)[0]>>5)&0x07)
	#define nci_mt_set(hdr, mt) ((hdr)[0] \|= (__u8)(((mt)&0x07)<<5))

	/* Packet Boundary Flag (PBF) */
	#define NCI_PBF_LAST 0x00
	#define NCI_PBF_CONT 0x01

	#define nci_pbf(hdr) (__u8)(((hdr)[0]>>4)&0x01)
	#define nci_pbf_set(hdr, pbf) ((hdr)[0] \|= (__u8)(((pbf)&0x01)<<4))

	/* Control Opcode manipulation */
	#define nci_opcode_pack(gid, oid) (__u16)((((__u16)((gid)&0x0f))<<8)\|\
	((__u16)((oid)&0x3f)))
	#define nci_opcode(hdr) nci_opcode_pack(hdr[0], hdr[1])
	#define nci_opcode_gid(op) (__u8)(((op)&0x0f00)>>8)
	#define nci_opcode_oid(op) (__u8)((op)&0x003f)

	/* Payload Length */
	#define nci_plen(hdr) (__u8)((hdr)[2])

	/* Connection ID */
	#define nci_conn_id(hdr) (__u8)(((hdr)[0])&0x0f)

	/* GID values */
	#define NCI_GID_CORE 0x0
	#define NCI_GID_RF_MGMT 0x1
	#define NCI_GID_NFCEE_MGMT 0x2
	#define NCI_GID_PROPRIETARY 0xf

	/* ---- NCI Packet structures ---- */
	#define NCI_CTRL_HDR_SIZE 3
	#define NCI_DATA_HDR_SIZE 3

	struct nci_ctrl_hdr {
	__u8 gid; /* MT & PBF & GID */
	__u8 oid;
	__u8 plen;
	} __packed;

	struct nci_data_hdr {
	__u8 conn_id; /* MT & PBF & ConnID */
	__u8 rfu;
	__u8 plen;
	} __packed;

	/* ------------------------ */
	/* ----- NCI Commands ---- */
	/* ------------------------ */
	#define NCI_OP_CORE_RESET_CMD nci_opcode_pack(NCI_GID_CORE, 0x00)
	struct nci_core_reset_cmd {
	__u8 reset_type;
	} __packed;

	#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)

	#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
	struct disc_map_config {
	__u8 rf_protocol;
	__u8 mode;
	__u8 rf_interface;
	} __packed;

	struct nci_rf_disc_map_cmd {
	__u8 num_mapping_configs;
	struct disc_map_config mapping_configs
	[NCI_MAX_NUM_MAPPING_CONFIGS];
	} __packed;

	#define NCI_OP_RF_DISCOVER_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
	struct disc_config {
	__u8 rf_tech_and_mode;
	__u8 frequency;
	} __packed;

	struct nci_rf_disc_cmd {
	__u8 num_disc_configs;
	struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
	} __packed;

	#define NCI_OP_RF_DISCOVER_SELECT_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
	struct nci_rf_discover_select_cmd {
	__u8 rf_discovery_id;
	__u8 rf_protocol;
	__u8 rf_interface;
	} __packed;

	#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
	struct nci_rf_deactivate_cmd {
	__u8 type;
	} __packed;

	/* ----------------------- */
	/* ---- NCI Responses ---- */
	/* ----------------------- */
	#define NCI_OP_CORE_RESET_RSP nci_opcode_pack(NCI_GID_CORE, 0x00)
	struct nci_core_reset_rsp {
	__u8 status;
	__u8 nci_ver;
	__u8 config_status;
	} __packed;

	#define NCI_OP_CORE_INIT_RSP nci_opcode_pack(NCI_GID_CORE, 0x01)
	struct nci_core_init_rsp_1 {
	__u8 status;
	__le32 nfcc_features;
	__u8 num_supported_rf_interfaces;
	__u8 supported_rf_interfaces[0]; /* variable size array */
	/* continuted in nci_core_init_rsp_2 */
	} __packed;

	struct nci_core_init_rsp_2 {
	__u8 max_logical_connections;
	__le16 max_routing_table_size;
	__u8 max_ctrl_pkt_payload_len;
	__le16 max_size_for_large_params;
	__u8 manufact_id;
	__le32 manufact_specific_info;
	} __packed;

	#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)

	#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)

	#define NCI_OP_RF_DISCOVER_SELECT_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)

	#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)

	/* --------------------------- */
	/* ---- NCI Notifications ---- */
	/* --------------------------- */
	#define NCI_OP_CORE_CONN_CREDITS_NTF nci_opcode_pack(NCI_GID_CORE, 0x06)
	struct conn_credit_entry {
	__u8 conn_id;
	__u8 credits;
	} __packed;

	struct nci_core_conn_credit_ntf {
	__u8 num_entries;
	struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
	} __packed;

	#define NCI_OP_CORE_GENERIC_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)

	#define NCI_OP_CORE_INTF_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
	struct nci_core_intf_error_ntf {
	__u8 status;
	__u8 conn_id;
	} __packed;

	#define NCI_OP_RF_DISCOVER_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
	struct rf_tech_specific_params_nfca_poll {
	__u16 sens_res;
	__u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
	__u8 nfcid1[10];
	__u8 sel_res_len; /* 0 or 1 Bytes */
	__u8 sel_res;
	} __packed;

	struct rf_tech_specific_params_nfcb_poll {
	__u8 sensb_res_len;
	__u8 sensb_res[12]; /* 11 or 12 Bytes */
	} __packed;

	struct rf_tech_specific_params_nfcf_poll {
	__u8 bit_rate;
	__u8 sensf_res_len;
	__u8 sensf_res[18]; /* 16 or 18 Bytes */
	} __packed;

	struct nci_rf_discover_ntf {
	__u8 rf_discovery_id;
	__u8 rf_protocol;
	__u8 rf_tech_and_mode;
	__u8 rf_tech_specific_params_len;

	union {
	struct rf_tech_specific_params_nfca_poll nfca_poll;
	struct rf_tech_specific_params_nfcb_poll nfcb_poll;
	struct rf_tech_specific_params_nfcf_poll nfcf_poll;
	} rf_tech_specific_params;

	__u8 ntf_type;
	} __packed;

	#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
	struct activation_params_nfca_poll_iso_dep {
	__u8 rats_res_len;
	__u8 rats_res[20];
	};

	struct activation_params_nfcb_poll_iso_dep {
	__u8 attrib_res_len;
	__u8 attrib_res[50];
	};

	struct nci_rf_intf_activated_ntf {
	__u8 rf_discovery_id;
	__u8 rf_interface;
	__u8 rf_protocol;
	__u8 activation_rf_tech_and_mode;
	__u8 max_data_pkt_payload_size;
	__u8 initial_num_credits;
	__u8 rf_tech_specific_params_len;

	union {
	struct rf_tech_specific_params_nfca_poll nfca_poll;
	struct rf_tech_specific_params_nfcb_poll nfcb_poll;
	struct rf_tech_specific_params_nfcf_poll nfcf_poll;
	} rf_tech_specific_params;

	__u8 data_exch_rf_tech_and_mode;
	__u8 data_exch_tx_bit_rate;
	__u8 data_exch_rx_bit_rate;
	__u8 activation_params_len;

	union {
	struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
	struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
	} activation_params;

	} __packed;

	#define NCI_OP_RF_DEACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
	struct nci_rf_deactivate_ntf {
	__u8 type;
	__u8 reason;
	} __packed;

	#endif /* __NCI_H */