include/net/nfc/hci.h

   1 /*
   2  * Copyright (C) 2011  Intel Corporation. All rights reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the
  16  * Free Software Foundation, Inc.,
  17  * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifndef __NET_HCI_H
  21 #define __NET_HCI_H
  22
  23 #include <linux/skbuff.h>
  24
  25 #include <net/nfc/nfc.h>
  26
  27 struct nfc_hci_dev;
  28
  29 struct nfc_hci_ops {
  30         int (*open) (struct nfc_hci_dev *hdev);
  31         void (*close) (struct nfc_hci_dev *hdev);
  32         int (*hci_ready) (struct nfc_hci_dev *hdev);
  33         int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
  34         int (*start_poll) (struct nfc_hci_dev *hdev, u32 protocols);
  35         int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
  36                                  struct nfc_target *target);
  37         int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
  38                                            struct nfc_target *target);
  39         int (*data_exchange) (struct nfc_hci_dev *hdev,
  40                               struct nfc_target *target,
  41                               struct sk_buff *skb, struct sk_buff **res_skb);
  42 };
  43
  44 #define NFC_HCI_MAX_CUSTOM_GATES        15
  45 struct nfc_hci_init_data {
  46         u8 gate_count;
  47         u8 gates[NFC_HCI_MAX_CUSTOM_GATES];
  48         char session_id[9];
  49 };
  50
  51 typedef int (*xmit) (struct sk_buff *skb, void *cb_data);
  52
  53 #define NFC_HCI_MAX_GATES               256
  54
  55 struct nfc_hci_dev {
  56         struct nfc_dev *ndev;
  57
  58         u32 max_data_link_payload;
  59
  60         struct mutex msg_tx_mutex;
  61
  62         struct list_head msg_tx_queue;
  63
  64         struct workqueue_struct *msg_tx_wq;
  65         struct work_struct msg_tx_work;
  66
  67         struct timer_list cmd_timer;
  68         struct hci_msg *cmd_pending_msg;
  69
  70         struct sk_buff_head rx_hcp_frags;
  71
  72         struct workqueue_struct *msg_rx_wq;
  73         struct work_struct msg_rx_work;
  74
  75         struct sk_buff_head msg_rx_queue;
  76
  77         struct nfc_hci_ops *ops;
  78
  79         struct nfc_hci_init_data init_data;
  80
  81         void *clientdata;
  82
  83         u8 gate2pipe[NFC_HCI_MAX_GATES];
  84
  85         bool poll_started;
  86         struct nfc_target *targets;
  87         int target_count;
  88
  89         u8 sw_romlib;
  90         u8 sw_patch;
  91         u8 sw_flashlib_major;
  92         u8 sw_flashlib_minor;
  93
  94         u8 hw_derivative;
  95         u8 hw_version;
  96         u8 hw_mpw;
  97         u8 hw_software;
  98         u8 hw_bsid;
  99 };
 100
 101 /* hci device allocation */
 102 struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
 103                                             struct nfc_hci_init_data *init_data,
 104                                             u32 protocols,
 105                                             int tx_headroom,
 106                                             int tx_tailroom,
 107                                             int max_link_payload);
 108 void nfc_hci_free_device(struct nfc_hci_dev *hdev);
 109
 110 int nfc_hci_register_device(struct nfc_hci_dev *hdev);
 111 void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);
 112
 113 void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
 114 void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
 115
 116 /* Host IDs */
 117 #define NFC_HCI_HOST_CONTROLLER_ID      0x00
 118 #define NFC_HCI_TERMINAL_HOST_ID        0x01
 119 #define NFC_HCI_UICC_HOST_ID            0x02
 120
 121 /* Host Controller Gates and registry indexes */
 122 #define NFC_HCI_ADMIN_GATE 0x00
 123 #define NFC_HCI_ADMIN_SESSION_IDENTITY  0x01
 124 #define NFC_HCI_ADMIN_MAX_PIPE          0x02
 125 #define NFC_HCI_ADMIN_WHITELIST         0x03
 126 #define NFC_HCI_ADMIN_HOST_LIST         0x04
 127
 128 #define NFC_HCI_LOOPBACK_GATE           0x04
 129
 130 #define NFC_HCI_ID_MGMT_GATE            0x05
 131 #define NFC_HCI_ID_MGMT_VERSION_SW      0x01
 132 #define NFC_HCI_ID_MGMT_VERSION_HW      0x03
 133 #define NFC_HCI_ID_MGMT_VENDOR_NAME     0x04
 134 #define NFC_HCI_ID_MGMT_MODEL_ID        0x05
 135 #define NFC_HCI_ID_MGMT_HCI_VERSION     0x02
 136 #define NFC_HCI_ID_MGMT_GATES_LIST      0x06
 137
 138 #define NFC_HCI_LINK_MGMT_GATE          0x06
 139 #define NFC_HCI_LINK_MGMT_REC_ERROR     0x01
 140
 141 #define NFC_HCI_RF_READER_B_GATE                        0x11
 142 #define NFC_HCI_RF_READER_B_PUPI                        0x03
 143 #define NFC_HCI_RF_READER_B_APPLICATION_DATA            0x04
 144 #define NFC_HCI_RF_READER_B_AFI                         0x02
 145 #define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE       0x01
 146 #define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA           0x05
 147
 148 #define NFC_HCI_RF_READER_A_GATE                0x13
 149 #define NFC_HCI_RF_READER_A_UID                 0x02
 150 #define NFC_HCI_RF_READER_A_ATQA                0x04
 151 #define NFC_HCI_RF_READER_A_APPLICATION_DATA    0x05
 152 #define NFC_HCI_RF_READER_A_SAK                 0x03
 153 #define NFC_HCI_RF_READER_A_FWI_SFGT            0x06
 154 #define NFC_HCI_RF_READER_A_DATARATE_MAX        0x01
 155
 156 #define NFC_HCI_TYPE_A_SEL_PROT(x)              (((x) & 0x60) >> 5)
 157 #define NFC_HCI_TYPE_A_SEL_PROT_MIFARE          0
 158 #define NFC_HCI_TYPE_A_SEL_PROT_ISO14443        1
 159 #define NFC_HCI_TYPE_A_SEL_PROT_DEP             2
 160 #define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP    3
 161
 162 /* Generic events */
 163 #define NFC_HCI_EVT_HCI_END_OF_OPERATION        0x01
 164 #define NFC_HCI_EVT_POST_DATA                   0x02
 165 #define NFC_HCI_EVT_HOT_PLUG                    0x03
 166
 167 /* Reader RF gates events */
 168 #define NFC_HCI_EVT_READER_REQUESTED    0x10
 169 #define NFC_HCI_EVT_END_OPERATION       0x11
 170
 171 /* Reader Application gate events */
 172 #define NFC_HCI_EVT_TARGET_DISCOVERED   0x10
 173
 174 /* receiving messages from lower layer */
 175 void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
 176                            struct sk_buff *skb);
 177 void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
 178                           struct sk_buff *skb);
 179 void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
 180                             struct sk_buff *skb);
 181 void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb);
 182
 183 /* connecting to gates and sending hci instructions */
 184 int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate);
 185 int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate);
 186 int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev);
 187 int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
 188                       struct sk_buff **skb);
 189 int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
 190                       const u8 *param, size_t param_len);
 191 int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
 192                      const u8 *param, size_t param_len, struct sk_buff **skb);
 193 int nfc_hci_send_response(struct nfc_hci_dev *hdev, u8 gate, u8 response,
 194                           const u8 *param, size_t param_len);
 195 int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
 196                        const u8 *param, size_t param_len);
 197
 198 #endif /* __NET_HCI_H */