1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Copyright (C) 2011 Intel Corporation. All rights reserved. 4 */ 5 6#ifndef __NET_HCI_H 7#define __NET_HCI_H 8 9#include <linux/skbuff.h> 10 11#include <net/nfc/nfc.h> 12 13struct nfc_hci_dev; 14 15struct nfc_hci_ops { 16 int (*open) (struct nfc_hci_dev *hdev); 17 void (*close) (struct nfc_hci_dev *hdev); 18 int (*load_session) (struct nfc_hci_dev *hdev); 19 int (*hci_ready) (struct nfc_hci_dev *hdev); 20 /* 21 * xmit must always send the complete buffer before 22 * returning. Returned result must be 0 for success 23 * or negative for failure. 24 */ 25 int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb); 26 int (*start_poll) (struct nfc_hci_dev *hdev, 27 u32 im_protocols, u32 tm_protocols); 28 void (*stop_poll) (struct nfc_hci_dev *hdev); 29 int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target, 30 u8 comm_mode, u8 *gb, size_t gb_len); 31 int (*dep_link_down)(struct nfc_hci_dev *hdev); 32 int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate, 33 struct nfc_target *target); 34 int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate, 35 struct nfc_target *target); 36 int (*im_transceive) (struct nfc_hci_dev *hdev, 37 struct nfc_target *target, struct sk_buff *skb, 38 data_exchange_cb_t cb, void *cb_context); 39 int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb); 40 int (*check_presence)(struct nfc_hci_dev *hdev, 41 struct nfc_target *target); 42 int (*event_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 event, 43 struct sk_buff *skb); 44 void (*cmd_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, 45 struct sk_buff *skb); 46 int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name); 47 int (*discover_se)(struct nfc_hci_dev *dev); 48 int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx); 49 int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx); 50 int (*se_io)(struct nfc_hci_dev *dev, u32 se_idx, 51 u8 *apdu, size_t apdu_length, 52 se_io_cb_t cb, void *cb_context); 53}; 54 55/* Pipes */ 56#define NFC_HCI_DO_NOT_CREATE_PIPE 0x81 57#define NFC_HCI_INVALID_PIPE 0x80 58#define NFC_HCI_INVALID_GATE 0xFF 59#define NFC_HCI_INVALID_HOST 0x80 60#define NFC_HCI_LINK_MGMT_PIPE 0x00 61#define NFC_HCI_ADMIN_PIPE 0x01 62 63struct nfc_hci_gate { 64 u8 gate; 65 u8 pipe; 66}; 67 68struct nfc_hci_pipe { 69 u8 gate; 70 u8 dest_host; 71}; 72 73#define NFC_HCI_MAX_CUSTOM_GATES 50 74/* 75 * According to specification 102 622 chapter 4.4 Pipes, 76 * the pipe identifier is 7 bits long. 77 */ 78#define NFC_HCI_MAX_PIPES 128 79struct nfc_hci_init_data { 80 u8 gate_count; 81 struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES]; 82 char session_id[9]; 83}; 84 85typedef int (*xmit) (struct sk_buff *skb, void *cb_data); 86 87#define NFC_HCI_MAX_GATES 256 88 89/* 90 * These values can be specified by a driver to indicate it requires some 91 * adaptation of the HCI standard. 92 * 93 * NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params 94 */ 95enum { 96 NFC_HCI_QUIRK_SHORT_CLEAR = 0, 97}; 98 99struct nfc_hci_dev { 100 struct nfc_dev *ndev; 101 102 u32 max_data_link_payload; 103 104 bool shutting_down; 105 106 struct mutex msg_tx_mutex; 107 108 struct list_head msg_tx_queue; 109 110 struct work_struct msg_tx_work; 111 112 struct timer_list cmd_timer; 113 struct hci_msg *cmd_pending_msg; 114 115 struct sk_buff_head rx_hcp_frags; 116 117 struct work_struct msg_rx_work; 118 119 struct sk_buff_head msg_rx_queue; 120 121 const struct nfc_hci_ops *ops; 122 123 struct nfc_llc *llc; 124 125 struct nfc_hci_init_data init_data; 126 127 void *clientdata; 128 129 u8 gate2pipe[NFC_HCI_MAX_GATES]; 130 struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES]; 131 132 u8 sw_romlib; 133 u8 sw_patch; 134 u8 sw_flashlib_major; 135 u8 sw_flashlib_minor; 136 137 u8 hw_derivative; 138 u8 hw_version; 139 u8 hw_mpw; 140 u8 hw_software; 141 u8 hw_bsid; 142 143 int async_cb_type; 144 data_exchange_cb_t async_cb; 145 void *async_cb_context; 146 147 u8 *gb; 148 size_t gb_len; 149 150 unsigned long quirks; 151}; 152 153/* hci device allocation */ 154struct nfc_hci_dev *nfc_hci_allocate_device(const struct nfc_hci_ops *ops, 155 struct nfc_hci_init_data *init_data, 156 unsigned long quirks, 157 u32 protocols, 158 const char *llc_name, 159 int tx_headroom, 160 int tx_tailroom, 161 int max_link_payload); 162void nfc_hci_free_device(struct nfc_hci_dev *hdev); 163 164int nfc_hci_register_device(struct nfc_hci_dev *hdev); 165void nfc_hci_unregister_device(struct nfc_hci_dev *hdev); 166 167void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata); 168void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev); 169 170static inline int nfc_hci_set_vendor_cmds(struct nfc_hci_dev *hdev, 171 const struct nfc_vendor_cmd *cmds, 172 int n_cmds) 173{ 174 return nfc_set_vendor_cmds(hdev->ndev, cmds, n_cmds); 175} 176 177void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err); 178 179int nfc_hci_result_to_errno(u8 result); 180void nfc_hci_reset_pipes(struct nfc_hci_dev *dev); 181void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host); 182 183/* Host IDs */ 184#define NFC_HCI_HOST_CONTROLLER_ID 0x00 185#define NFC_HCI_TERMINAL_HOST_ID 0x01 186#define NFC_HCI_UICC_HOST_ID 0x02 187 188/* Host Controller Gates and registry indexes */ 189#define NFC_HCI_ADMIN_GATE 0x00 190#define NFC_HCI_ADMIN_SESSION_IDENTITY 0x01 191#define NFC_HCI_ADMIN_MAX_PIPE 0x02 192#define NFC_HCI_ADMIN_WHITELIST 0x03 193#define NFC_HCI_ADMIN_HOST_LIST 0x04 194 195#define NFC_HCI_LOOPBACK_GATE 0x04 196 197#define NFC_HCI_ID_MGMT_GATE 0x05 198#define NFC_HCI_ID_MGMT_VERSION_SW 0x01 199#define NFC_HCI_ID_MGMT_VERSION_HW 0x03 200#define NFC_HCI_ID_MGMT_VENDOR_NAME 0x04 201#define NFC_HCI_ID_MGMT_MODEL_ID 0x05 202#define NFC_HCI_ID_MGMT_HCI_VERSION 0x02 203#define NFC_HCI_ID_MGMT_GATES_LIST 0x06 204 205#define NFC_HCI_LINK_MGMT_GATE 0x06 206#define NFC_HCI_LINK_MGMT_REC_ERROR 0x01 207 208#define NFC_HCI_RF_READER_B_GATE 0x11 209#define NFC_HCI_RF_READER_B_PUPI 0x03 210#define NFC_HCI_RF_READER_B_APPLICATION_DATA 0x04 211#define NFC_HCI_RF_READER_B_AFI 0x02 212#define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE 0x01 213#define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA 0x05 214 215#define NFC_HCI_RF_READER_A_GATE 0x13 216#define NFC_HCI_RF_READER_A_UID 0x02 217#define NFC_HCI_RF_READER_A_ATQA 0x04 218#define NFC_HCI_RF_READER_A_APPLICATION_DATA 0x05 219#define NFC_HCI_RF_READER_A_SAK 0x03 220#define NFC_HCI_RF_READER_A_FWI_SFGT 0x06 221#define NFC_HCI_RF_READER_A_DATARATE_MAX 0x01 222 223#define NFC_HCI_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) 224#define NFC_HCI_TYPE_A_SEL_PROT_MIFARE 0 225#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443 1 226#define NFC_HCI_TYPE_A_SEL_PROT_DEP 2 227#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP 3 228 229/* Generic events */ 230#define NFC_HCI_EVT_HCI_END_OF_OPERATION 0x01 231#define NFC_HCI_EVT_POST_DATA 0x02 232#define NFC_HCI_EVT_HOT_PLUG 0x03 233 234/* Generic commands */ 235#define NFC_HCI_ANY_SET_PARAMETER 0x01 236#define NFC_HCI_ANY_GET_PARAMETER 0x02 237#define NFC_HCI_ANY_OPEN_PIPE 0x03 238#define NFC_HCI_ANY_CLOSE_PIPE 0x04 239 240/* Reader RF gates events */ 241#define NFC_HCI_EVT_READER_REQUESTED 0x10 242#define NFC_HCI_EVT_END_OPERATION 0x11 243 244/* Reader Application gate events */ 245#define NFC_HCI_EVT_TARGET_DISCOVERED 0x10 246 247/* receiving messages from lower layer */ 248void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result, 249 struct sk_buff *skb); 250void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd, 251 struct sk_buff *skb); 252void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event, 253 struct sk_buff *skb); 254void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb); 255 256/* connecting to gates and sending hci instructions */ 257int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate, 258 u8 pipe); 259int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate); 260int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev); 261int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx, 262 struct sk_buff **skb); 263int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx, 264 const u8 *param, size_t param_len); 265int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd, 266 const u8 *param, size_t param_len, struct sk_buff **skb); 267int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd, 268 const u8 *param, size_t param_len, 269 data_exchange_cb_t cb, void *cb_context); 270int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event, 271 const u8 *param, size_t param_len); 272int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate); 273u32 nfc_hci_sak_to_protocol(u8 sak); 274 275#endif /* __NET_HCI_H */ 276