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The NFC Controller Interface (NCI) is a standard communication protocol between an NFC Controller (NFCC) and a Device Host (DH), defined by the NFC Forum. Signed-off-by: Ilan Elias <ilane@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
313 lines
9.4 KiB
C
313 lines
9.4 KiB
C
/*
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* The NFC Controller Interface is the communication protocol between an
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* NFC Controller (NFCC) and a Device Host (DH).
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*
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* Copyright (C) 2011 Texas Instruments, Inc.
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*
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* Written by Ilan Elias <ilane@ti.com>
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*
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* Acknowledgements:
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* This file is based on hci.h, which was written
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* by Maxim Krasnyansky.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#ifndef __NCI_H
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#define __NCI_H
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/* NCI constants */
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#define NCI_MAX_NUM_MAPPING_CONFIGS 10
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#define NCI_MAX_NUM_RF_CONFIGS 10
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#define NCI_MAX_NUM_CONN 10
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/* NCI Status Codes */
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#define NCI_STATUS_OK 0x00
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#define NCI_STATUS_REJECTED 0x01
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#define NCI_STATUS_MESSAGE_CORRUPTED 0x02
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#define NCI_STATUS_BUFFER_FULL 0x03
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#define NCI_STATUS_FAILED 0x04
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#define NCI_STATUS_NOT_INITIALIZED 0x05
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#define NCI_STATUS_SYNTAX_ERROR 0x06
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#define NCI_STATUS_SEMANTIC_ERROR 0x07
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#define NCI_STATUS_UNKNOWN_GID 0x08
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#define NCI_STATUS_UNKNOWN_OID 0x09
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#define NCI_STATUS_INVALID_PARAM 0x0a
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#define NCI_STATUS_MESSAGE_SIZE_EXCEEDED 0x0b
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/* Discovery Specific Status Codes */
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#define NCI_STATUS_DISCOVERY_ALREADY_STARTED 0xa0
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#define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED 0xa1
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/* RF Interface Specific Status Codes */
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#define NCI_STATUS_RF_TRANSMISSION_ERROR 0xb0
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#define NCI_STATUS_RF_PROTOCOL_ERROR 0xb1
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#define NCI_STATUS_RF_TIMEOUT_ERROR 0xb2
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#define NCI_STATUS_RF_LINK_LOSS_ERROR 0xb3
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/* NFCEE Interface Specific Status Codes */
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#define NCI_STATUS_MAX_ACTIVE_NFCEE_INTERFACES_REACHED 0xc0
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#define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED 0xc1
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#define NCI_STATUS_NFCEE_TRANSMISSION_ERROR 0xc2
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#define NCI_STATUS_NFCEE_PROTOCOL_ERROR 0xc3
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#define NCI_STATUS_NFCEE_TIMEOUT_ERROR 0xc4
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/* NCI RF Technology and Mode */
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#define NCI_NFC_A_PASSIVE_POLL_MODE 0x00
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#define NCI_NFC_B_PASSIVE_POLL_MODE 0x01
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#define NCI_NFC_F_PASSIVE_POLL_MODE 0x02
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#define NCI_NFC_A_ACTIVE_POLL_MODE 0x03
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#define NCI_NFC_F_ACTIVE_POLL_MODE 0x05
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#define NCI_NFC_A_PASSIVE_LISTEN_MODE 0x80
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#define NCI_NFC_B_PASSIVE_LISTEN_MODE 0x81
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#define NCI_NFC_F_PASSIVE_LISTEN_MODE 0x82
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#define NCI_NFC_A_ACTIVE_LISTEN_MODE 0x83
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#define NCI_NFC_F_ACTIVE_LISTEN_MODE 0x85
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/* NCI RF Protocols */
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#define NCI_RF_PROTOCOL_UNKNOWN 0x00
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#define NCI_RF_PROTOCOL_T1T 0x01
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#define NCI_RF_PROTOCOL_T2T 0x02
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#define NCI_RF_PROTOCOL_T3T 0x03
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#define NCI_RF_PROTOCOL_ISO_DEP 0x04
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#define NCI_RF_PROTOCOL_NFC_DEP 0x05
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/* NCI RF Interfaces */
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#define NCI_RF_INTERFACE_RFU 0x00
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#define NCI_RF_INTERFACE_FRAME 0x01
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#define NCI_RF_INTERFACE_ISO_DEP 0x02
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#define NCI_RF_INTERFACE_NFC_DEP 0x03
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/* NCI RF_DISCOVER_MAP_CMD modes */
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#define NCI_DISC_MAP_MODE_POLL 0x01
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#define NCI_DISC_MAP_MODE_LISTEN 0x02
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#define NCI_DISC_MAP_MODE_BOTH 0x03
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/* NCI Discovery Types */
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#define NCI_DISCOVERY_TYPE_POLL_A_PASSIVE 0x00
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#define NCI_DISCOVERY_TYPE_POLL_B_PASSIVE 0x01
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#define NCI_DISCOVERY_TYPE_POLL_F_PASSIVE 0x02
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#define NCI_DISCOVERY_TYPE_POLL_A_ACTIVE 0x03
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#define NCI_DISCOVERY_TYPE_POLL_F_ACTIVE 0x05
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#define NCI_DISCOVERY_TYPE_WAKEUP_A_PASSIVE 0x06
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#define NCI_DISCOVERY_TYPE_WAKEUP_B_PASSIVE 0x07
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#define NCI_DISCOVERY_TYPE_WAKEUP_A_ACTIVE 0x09
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#define NCI_DISCOVERY_TYPE_LISTEN_A_PASSIVE 0x80
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#define NCI_DISCOVERY_TYPE_LISTEN_B_PASSIVE 0x81
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#define NCI_DISCOVERY_TYPE_LISTEN_F_PASSIVE 0x82
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#define NCI_DISCOVERY_TYPE_LISTEN_A_ACTIVE 0x83
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#define NCI_DISCOVERY_TYPE_LISTEN_F_ACTIVE 0x85
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/* NCI Deactivation Type */
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#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
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#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
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#define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE 0x02
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#define NCI_DEACTIVATE_TYPE_RF_LINK_LOSS 0x03
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#define NCI_DEACTIVATE_TYPE_DISCOVERY_ERROR 0x04
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/* Message Type (MT) */
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#define NCI_MT_DATA_PKT 0x00
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#define NCI_MT_CMD_PKT 0x01
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#define NCI_MT_RSP_PKT 0x02
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#define NCI_MT_NTF_PKT 0x03
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#define nci_mt(hdr) (((hdr)[0]>>5)&0x07)
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#define nci_mt_set(hdr, mt) ((hdr)[0] |= (__u8)(((mt)&0x07)<<5))
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/* Packet Boundary Flag (PBF) */
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#define NCI_PBF_LAST 0x00
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#define NCI_PBF_CONT 0x01
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#define nci_pbf(hdr) (__u8)(((hdr)[0]>>4)&0x01)
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#define nci_pbf_set(hdr, pbf) ((hdr)[0] |= (__u8)(((pbf)&0x01)<<4))
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/* Control Opcode manipulation */
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#define nci_opcode_pack(gid, oid) (__u16)((((__u16)((gid)&0x0f))<<8)|\
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((__u16)((oid)&0x3f)))
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#define nci_opcode(hdr) nci_opcode_pack(hdr[0], hdr[1])
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#define nci_opcode_gid(op) (__u8)(((op)&0x0f00)>>8)
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#define nci_opcode_oid(op) (__u8)((op)&0x003f)
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/* Payload Length */
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#define nci_plen(hdr) (__u8)((hdr)[2])
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/* Connection ID */
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#define nci_conn_id(hdr) (__u8)(((hdr)[0])&0x0f)
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/* GID values */
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#define NCI_GID_CORE 0x0
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#define NCI_GID_RF_MGMT 0x1
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#define NCI_GID_NFCEE_MGMT 0x2
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#define NCI_GID_PROPRIETARY 0xf
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/* ---- NCI Packet structures ---- */
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#define NCI_CTRL_HDR_SIZE 3
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#define NCI_DATA_HDR_SIZE 3
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struct nci_ctrl_hdr {
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__u8 gid; /* MT & PBF & GID */
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__u8 oid;
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__u8 plen;
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} __packed;
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struct nci_data_hdr {
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__u8 conn_id; /* MT & PBF & ConnID */
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__u8 rfu;
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__u8 plen;
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} __packed;
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/* ------------------------ */
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/* ----- NCI Commands ---- */
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/* ------------------------ */
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#define NCI_OP_CORE_RESET_CMD nci_opcode_pack(NCI_GID_CORE, 0x00)
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#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)
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#define NCI_OP_CORE_SET_CONFIG_CMD nci_opcode_pack(NCI_GID_CORE, 0x02)
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#define NCI_OP_CORE_CONN_CREATE_CMD nci_opcode_pack(NCI_GID_CORE, 0x04)
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struct nci_core_conn_create_cmd {
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__u8 target_handle;
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__u8 num_target_specific_params;
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} __packed;
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#define NCI_OP_CORE_CONN_CLOSE_CMD nci_opcode_pack(NCI_GID_CORE, 0x06)
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#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
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struct disc_map_config {
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__u8 rf_protocol;
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__u8 mode;
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__u8 rf_interface_type;
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} __packed;
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struct nci_rf_disc_map_cmd {
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__u8 num_mapping_configs;
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struct disc_map_config mapping_configs
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[NCI_MAX_NUM_MAPPING_CONFIGS];
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} __packed;
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#define NCI_OP_RF_DISCOVER_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
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struct disc_config {
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__u8 type;
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__u8 frequency;
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} __packed;
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struct nci_rf_disc_cmd {
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__u8 num_disc_configs;
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struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
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} __packed;
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#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
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struct nci_rf_deactivate_cmd {
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__u8 type;
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} __packed;
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/* ----------------------- */
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/* ---- NCI Responses ---- */
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/* ----------------------- */
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#define NCI_OP_CORE_RESET_RSP nci_opcode_pack(NCI_GID_CORE, 0x00)
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struct nci_core_reset_rsp {
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__u8 status;
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__u8 nci_ver;
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} __packed;
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#define NCI_OP_CORE_INIT_RSP nci_opcode_pack(NCI_GID_CORE, 0x01)
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struct nci_core_init_rsp_1 {
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__u8 status;
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__le32 nfcc_features;
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__u8 num_supported_rf_interfaces;
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__u8 supported_rf_interfaces[0]; /* variable size array */
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/* continuted in nci_core_init_rsp_2 */
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} __packed;
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struct nci_core_init_rsp_2 {
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__u8 max_logical_connections;
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__le16 max_routing_table_size;
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__u8 max_control_packet_payload_length;
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__le16 rf_sending_buffer_size;
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__le16 rf_receiving_buffer_size;
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__le16 manufacturer_id;
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} __packed;
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#define NCI_OP_CORE_SET_CONFIG_RSP nci_opcode_pack(NCI_GID_CORE, 0x02)
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#define NCI_OP_CORE_CONN_CREATE_RSP nci_opcode_pack(NCI_GID_CORE, 0x04)
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struct nci_core_conn_create_rsp {
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__u8 status;
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__u8 max_pkt_payload_size;
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__u8 initial_num_credits;
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__u8 conn_id;
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} __packed;
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#define NCI_OP_CORE_CONN_CLOSE_RSP nci_opcode_pack(NCI_GID_CORE, 0x06)
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#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
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#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
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#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
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/* --------------------------- */
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/* ---- NCI Notifications ---- */
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/* --------------------------- */
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#define NCI_OP_CORE_CONN_CREDITS_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)
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struct conn_credit_entry {
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__u8 conn_id;
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__u8 credits;
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} __packed;
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struct nci_core_conn_credit_ntf {
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__u8 num_entries;
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struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
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} __packed;
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#define NCI_OP_RF_FIELD_INFO_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
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struct nci_rf_field_info_ntf {
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__u8 rf_field_status;
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} __packed;
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#define NCI_OP_RF_ACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
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struct rf_tech_specific_params_nfca_poll {
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__u16 sens_res;
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__u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
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__u8 nfcid1[10];
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__u8 sel_res_len; /* 0 or 1 Bytes */
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__u8 sel_res;
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} __packed;
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struct activation_params_nfca_poll_iso_dep {
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__u8 rats_res_len;
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__u8 rats_res[20];
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};
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struct nci_rf_activate_ntf {
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__u8 target_handle;
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__u8 rf_protocol;
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__u8 rf_tech_and_mode;
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__u8 rf_tech_specific_params_len;
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union {
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struct rf_tech_specific_params_nfca_poll nfca_poll;
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} rf_tech_specific_params;
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__u8 rf_interface_type;
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__u8 activation_params_len;
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union {
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struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
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} activation_params;
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} __packed;
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#define NCI_OP_RF_DEACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
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#endif /* __NCI_H */
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