linux/include/linux/nfc.h
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   1/*
   2 * Copyright (C) 2011 Instituto Nokia de Tecnologia
   3 *
   4 * Authors:
   5 *    Lauro Ramos Venancio <lauro.venancio@openbossa.org>
   6 *    Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; either version 2 of the License, or
  11 * (at your option) any later version.
  12 *
  13 * This program is distributed in the hope that it will be useful,
  14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16 * GNU General Public License for more details.
  17 *
  18 * You should have received a copy of the GNU General Public License
  19 * along with this program; if not, write to the
  20 * Free Software Foundation, Inc.,
  21 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  22 */
  23
  24#ifndef __LINUX_NFC_H
  25#define __LINUX_NFC_H
  26
  27#include <linux/types.h>
  28#include <linux/socket.h>
  29
  30#define NFC_GENL_NAME "nfc"
  31#define NFC_GENL_VERSION 1
  32
  33#define NFC_GENL_MCAST_EVENT_NAME "events"
  34
  35/**
  36 * enum nfc_commands - supported nfc commands
  37 *
  38 * @NFC_CMD_UNSPEC: unspecified command
  39 *
  40 * @NFC_CMD_GET_DEVICE: request information about a device (requires
  41 *      %NFC_ATTR_DEVICE_INDEX) or dump request to get a list of all nfc devices
  42 * @NFC_CMD_DEV_UP: turn on the nfc device
  43 *      (requires %NFC_ATTR_DEVICE_INDEX)
  44 * @NFC_CMD_DEV_DOWN: turn off the nfc device
  45 *      (requires %NFC_ATTR_DEVICE_INDEX)
  46 * @NFC_CMD_START_POLL: start polling for targets using the given protocols
  47 *      (requires %NFC_ATTR_DEVICE_INDEX and %NFC_ATTR_PROTOCOLS)
  48 * @NFC_CMD_STOP_POLL: stop polling for targets (requires
  49 *      %NFC_ATTR_DEVICE_INDEX)
  50 * @NFC_CMD_GET_TARGET: dump all targets found by the previous poll (requires
  51 *      %NFC_ATTR_DEVICE_INDEX)
  52 * @NFC_EVENT_TARGETS_FOUND: event emitted when a new target is found
  53 *      (it sends %NFC_ATTR_DEVICE_INDEX)
  54 * @NFC_EVENT_DEVICE_ADDED: event emitted when a new device is registred
  55 *      (it sends %NFC_ATTR_DEVICE_NAME, %NFC_ATTR_DEVICE_INDEX and
  56 *      %NFC_ATTR_PROTOCOLS)
  57 * @NFC_EVENT_DEVICE_REMOVED: event emitted when a device is removed
  58 *      (it sends %NFC_ATTR_DEVICE_INDEX)
  59 * @NFC_EVENT_TM_ACTIVATED: event emitted when the adapter is activated in
  60 *      target mode.
  61 * @NFC_EVENT_DEVICE_DEACTIVATED: event emitted when the adapter is deactivated
  62 *      from target mode.
  63 */
  64enum nfc_commands {
  65        NFC_CMD_UNSPEC,
  66        NFC_CMD_GET_DEVICE,
  67        NFC_CMD_DEV_UP,
  68        NFC_CMD_DEV_DOWN,
  69        NFC_CMD_DEP_LINK_UP,
  70        NFC_CMD_DEP_LINK_DOWN,
  71        NFC_CMD_START_POLL,
  72        NFC_CMD_STOP_POLL,
  73        NFC_CMD_GET_TARGET,
  74        NFC_EVENT_TARGETS_FOUND,
  75        NFC_EVENT_DEVICE_ADDED,
  76        NFC_EVENT_DEVICE_REMOVED,
  77        NFC_EVENT_TARGET_LOST,
  78        NFC_EVENT_TM_ACTIVATED,
  79        NFC_EVENT_TM_DEACTIVATED,
  80/* private: internal use only */
  81        __NFC_CMD_AFTER_LAST
  82};
  83#define NFC_CMD_MAX (__NFC_CMD_AFTER_LAST - 1)
  84
  85/**
  86 * enum nfc_attrs - supported nfc attributes
  87 *
  88 * @NFC_ATTR_UNSPEC: unspecified attribute
  89 *
  90 * @NFC_ATTR_DEVICE_INDEX: index of nfc device
  91 * @NFC_ATTR_DEVICE_NAME: device name, max 8 chars
  92 * @NFC_ATTR_PROTOCOLS: nfc protocols - bitwise or-ed combination from
  93 *      NFC_PROTO_*_MASK constants
  94 * @NFC_ATTR_TARGET_INDEX: index of the nfc target
  95 * @NFC_ATTR_TARGET_SENS_RES: NFC-A targets extra information such as NFCID
  96 * @NFC_ATTR_TARGET_SEL_RES: NFC-A targets extra information (useful if the
  97 *      target is not NFC-Forum compliant)
  98 * @NFC_ATTR_TARGET_NFCID1: NFC-A targets identifier, max 10 bytes
  99 * @NFC_ATTR_TARGET_SENSB_RES: NFC-B targets extra information, max 12 bytes
 100 * @NFC_ATTR_TARGET_SENSF_RES: NFC-F targets extra information, max 18 bytes
 101 * @NFC_ATTR_COMM_MODE: Passive or active mode
 102 * @NFC_ATTR_RF_MODE: Initiator or target
 103 * @NFC_ATTR_IM_PROTOCOLS: Initiator mode protocols to poll for
 104 * @NFC_ATTR_TM_PROTOCOLS: Target mode protocols to listen for
 105 */
 106enum nfc_attrs {
 107        NFC_ATTR_UNSPEC,
 108        NFC_ATTR_DEVICE_INDEX,
 109        NFC_ATTR_DEVICE_NAME,
 110        NFC_ATTR_PROTOCOLS,
 111        NFC_ATTR_TARGET_INDEX,
 112        NFC_ATTR_TARGET_SENS_RES,
 113        NFC_ATTR_TARGET_SEL_RES,
 114        NFC_ATTR_TARGET_NFCID1,
 115        NFC_ATTR_TARGET_SENSB_RES,
 116        NFC_ATTR_TARGET_SENSF_RES,
 117        NFC_ATTR_COMM_MODE,
 118        NFC_ATTR_RF_MODE,
 119        NFC_ATTR_DEVICE_POWERED,
 120        NFC_ATTR_IM_PROTOCOLS,
 121        NFC_ATTR_TM_PROTOCOLS,
 122/* private: internal use only */
 123        __NFC_ATTR_AFTER_LAST
 124};
 125#define NFC_ATTR_MAX (__NFC_ATTR_AFTER_LAST - 1)
 126
 127#define NFC_DEVICE_NAME_MAXSIZE 8
 128#define NFC_NFCID1_MAXSIZE 10
 129#define NFC_SENSB_RES_MAXSIZE 12
 130#define NFC_SENSF_RES_MAXSIZE 18
 131#define NFC_GB_MAXSIZE        48
 132
 133/* NFC protocols */
 134#define NFC_PROTO_JEWEL         1
 135#define NFC_PROTO_MIFARE        2
 136#define NFC_PROTO_FELICA        3
 137#define NFC_PROTO_ISO14443      4
 138#define NFC_PROTO_NFC_DEP       5
 139#define NFC_PROTO_ISO14443_B    6
 140
 141#define NFC_PROTO_MAX           7
 142
 143/* NFC communication modes */
 144#define NFC_COMM_ACTIVE  0
 145#define NFC_COMM_PASSIVE 1
 146
 147/* NFC RF modes */
 148#define NFC_RF_INITIATOR 0
 149#define NFC_RF_TARGET    1
 150#define NFC_RF_NONE      2
 151
 152/* NFC protocols masks used in bitsets */
 153#define NFC_PROTO_JEWEL_MASK      (1 << NFC_PROTO_JEWEL)
 154#define NFC_PROTO_MIFARE_MASK     (1 << NFC_PROTO_MIFARE)
 155#define NFC_PROTO_FELICA_MASK     (1 << NFC_PROTO_FELICA)
 156#define NFC_PROTO_ISO14443_MASK   (1 << NFC_PROTO_ISO14443)
 157#define NFC_PROTO_NFC_DEP_MASK    (1 << NFC_PROTO_NFC_DEP)
 158#define NFC_PROTO_ISO14443_B_MASK (1 << NFC_PROTO_ISO14443_B)
 159
 160struct sockaddr_nfc {
 161        sa_family_t sa_family;
 162        __u32 dev_idx;
 163        __u32 target_idx;
 164        __u32 nfc_protocol;
 165};
 166
 167#define NFC_LLCP_MAX_SERVICE_NAME 63
 168struct sockaddr_nfc_llcp {
 169        sa_family_t sa_family;
 170        __u32 dev_idx;
 171        __u32 target_idx;
 172        __u32 nfc_protocol;
 173        __u8 dsap; /* Destination SAP, if known */
 174        __u8 ssap; /* Source SAP to be bound to */
 175        char service_name[NFC_LLCP_MAX_SERVICE_NAME]; /* Service name URI */;
 176        size_t service_name_len;
 177};
 178
 179/* NFC socket protocols */
 180#define NFC_SOCKPROTO_RAW       0
 181#define NFC_SOCKPROTO_LLCP      1
 182#define NFC_SOCKPROTO_MAX       2
 183
 184#define NFC_HEADER_SIZE 1
 185
 186#endif /*__LINUX_NFC_H */
 187
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