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, see <http://www.gnu.org/licenses/>. 16 */ 17 18 #ifndef __NET_HCI_H 19 #define __NET_HCI_H 20 21 #include <linux/skbuff.h> 22 23 #include <net/nfc/nfc.h> 24 25 struct nfc_hci_dev; 26 27 struct nfc_hci_ops { 28 int (*open) (struct nfc_hci_dev *hdev); 29 void (*close) (struct nfc_hci_dev *hdev); 30 int (*hci_ready) (struct nfc_hci_dev *hdev); 31 /* 32 * xmit must always send the complete buffer before 33 * returning. Returned result must be 0 for success 34 * or negative for failure. 35 */ 36 int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb); 37 int (*start_poll) (struct nfc_hci_dev *hdev, 38 u32 im_protocols, u32 tm_protocols); 39 int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target, 40 u8 comm_mode, u8 *gb, size_t gb_len); 41 int (*dep_link_down)(struct nfc_hci_dev *hdev); 42 int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate, 43 struct nfc_target *target); 44 int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate, 45 struct nfc_target *target); 46 int (*im_transceive) (struct nfc_hci_dev *hdev, 47 struct nfc_target *target, struct sk_buff *skb, 48 data_exchange_cb_t cb, void *cb_context); 49 int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb); 50 int (*check_presence)(struct nfc_hci_dev *hdev, 51 struct nfc_target *target); 52 int (*event_received)(struct nfc_hci_dev *hdev, u8 gate, u8 event, 53 struct sk_buff *skb); 54 int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name); 55 int (*discover_se)(struct nfc_hci_dev *dev); 56 int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx); 57 int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx); 58 }; 59 60 /* Pipes */ 61 #define NFC_HCI_INVALID_PIPE 0x80 62 #define NFC_HCI_LINK_MGMT_PIPE 0x00 63 #define NFC_HCI_ADMIN_PIPE 0x01 64 65 struct nfc_hci_gate { 66 u8 gate; 67 u8 pipe; 68 }; 69 70 #define NFC_HCI_MAX_CUSTOM_GATES 50 71 struct nfc_hci_init_data { 72 u8 gate_count; 73 struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES]; 74 char session_id[9]; 75 }; 76 77 typedef int (*xmit) (struct sk_buff *skb, void *cb_data); 78 79 #define NFC_HCI_MAX_GATES 256 80 81 /* 82 * These values can be specified by a driver to indicate it requires some 83 * adaptation of the HCI standard. 84 * 85 * NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params 86 */ 87 enum { 88 NFC_HCI_QUIRK_SHORT_CLEAR = 0, 89 }; 90 91 struct nfc_hci_dev { 92 struct nfc_dev *ndev; 93 94 u32 max_data_link_payload; 95 96 bool shutting_down; 97 98 struct mutex msg_tx_mutex; 99 100 struct list_head msg_tx_queue; 101 102 struct work_struct msg_tx_work; 103 104 struct timer_list cmd_timer; 105 struct hci_msg *cmd_pending_msg; 106 107 struct sk_buff_head rx_hcp_frags; 108 109 struct work_struct msg_rx_work; 110 111 struct sk_buff_head msg_rx_queue; 112 113 struct nfc_hci_ops *ops; 114 115 struct nfc_llc *llc; 116 117 struct nfc_hci_init_data init_data; 118 119 void *clientdata; 120 121 u8 gate2pipe[NFC_HCI_MAX_GATES]; 122 123 u8 sw_romlib; 124 u8 sw_patch; 125 u8 sw_flashlib_major; 126 u8 sw_flashlib_minor; 127 128 u8 hw_derivative; 129 u8 hw_version; 130 u8 hw_mpw; 131 u8 hw_software; 132 u8 hw_bsid; 133 134 int async_cb_type; 135 data_exchange_cb_t async_cb; 136 void *async_cb_context; 137 138 u8 *gb; 139 size_t gb_len; 140 141 unsigned long quirks; 142 }; 143 144 /* hci device allocation */ 145 struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops, 146 struct nfc_hci_init_data *init_data, 147 unsigned long quirks, 148 u32 protocols, 149 const char *llc_name, 150 int tx_headroom, 151 int tx_tailroom, 152 int max_link_payload); 153 void nfc_hci_free_device(struct nfc_hci_dev *hdev); 154 155 int nfc_hci_register_device(struct nfc_hci_dev *hdev); 156 void nfc_hci_unregister_device(struct nfc_hci_dev *hdev); 157 158 void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata); 159 void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev); 160 161 void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err); 162 163 int nfc_hci_result_to_errno(u8 result); 164 165 /* Host IDs */ 166 #define NFC_HCI_HOST_CONTROLLER_ID 0x00 167 #define NFC_HCI_TERMINAL_HOST_ID 0x01 168 #define NFC_HCI_UICC_HOST_ID 0x02 169 170 /* Host Controller Gates and registry indexes */ 171 #define NFC_HCI_ADMIN_GATE 0x00 172 #define NFC_HCI_ADMIN_SESSION_IDENTITY 0x01 173 #define NFC_HCI_ADMIN_MAX_PIPE 0x02 174 #define NFC_HCI_ADMIN_WHITELIST 0x03 175 #define NFC_HCI_ADMIN_HOST_LIST 0x04 176 177 #define NFC_HCI_LOOPBACK_GATE 0x04 178 179 #define NFC_HCI_ID_MGMT_GATE 0x05 180 #define NFC_HCI_ID_MGMT_VERSION_SW 0x01 181 #define NFC_HCI_ID_MGMT_VERSION_HW 0x03 182 #define NFC_HCI_ID_MGMT_VENDOR_NAME 0x04 183 #define NFC_HCI_ID_MGMT_MODEL_ID 0x05 184 #define NFC_HCI_ID_MGMT_HCI_VERSION 0x02 185 #define NFC_HCI_ID_MGMT_GATES_LIST 0x06 186 187 #define NFC_HCI_LINK_MGMT_GATE 0x06 188 #define NFC_HCI_LINK_MGMT_REC_ERROR 0x01 189 190 #define NFC_HCI_RF_READER_B_GATE 0x11 191 #define NFC_HCI_RF_READER_B_PUPI 0x03 192 #define NFC_HCI_RF_READER_B_APPLICATION_DATA 0x04 193 #define NFC_HCI_RF_READER_B_AFI 0x02 194 #define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE 0x01 195 #define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA 0x05 196 197 #define NFC_HCI_RF_READER_A_GATE 0x13 198 #define NFC_HCI_RF_READER_A_UID 0x02 199 #define NFC_HCI_RF_READER_A_ATQA 0x04 200 #define NFC_HCI_RF_READER_A_APPLICATION_DATA 0x05 201 #define NFC_HCI_RF_READER_A_SAK 0x03 202 #define NFC_HCI_RF_READER_A_FWI_SFGT 0x06 203 #define NFC_HCI_RF_READER_A_DATARATE_MAX 0x01 204 205 #define NFC_HCI_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) 206 #define NFC_HCI_TYPE_A_SEL_PROT_MIFARE 0 207 #define NFC_HCI_TYPE_A_SEL_PROT_ISO14443 1 208 #define NFC_HCI_TYPE_A_SEL_PROT_DEP 2 209 #define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP 3 210 211 /* Generic events */ 212 #define NFC_HCI_EVT_HCI_END_OF_OPERATION 0x01 213 #define NFC_HCI_EVT_POST_DATA 0x02 214 #define NFC_HCI_EVT_HOT_PLUG 0x03 215 216 /* Reader RF gates events */ 217 #define NFC_HCI_EVT_READER_REQUESTED 0x10 218 #define NFC_HCI_EVT_END_OPERATION 0x11 219 220 /* Reader Application gate events */ 221 #define NFC_HCI_EVT_TARGET_DISCOVERED 0x10 222 223 /* receiving messages from lower layer */ 224 void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result, 225 struct sk_buff *skb); 226 void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, 227 struct sk_buff *skb); 228 void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event, 229 struct sk_buff *skb); 230 void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb); 231 232 /* connecting to gates and sending hci instructions */ 233 int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate, 234 u8 pipe); 235 int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate); 236 int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev); 237 int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx, 238 struct sk_buff **skb); 239 int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx, 240 const u8 *param, size_t param_len); 241 int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd, 242 const u8 *param, size_t param_len, struct sk_buff **skb); 243 int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd, 244 const u8 *param, size_t param_len, 245 data_exchange_cb_t cb, void *cb_context); 246 int nfc_hci_send_response(struct nfc_hci_dev *hdev, u8 gate, u8 response, 247 const u8 *param, size_t param_len); 248 int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event, 249 const u8 *param, size_t param_len); 250 int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate); 251 u32 nfc_hci_sak_to_protocol(u8 sak); 252 253 #endif /* __NET_HCI_H */ 254