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
25struct nfc_hci_dev;
26
27struct nfc_hci_ops {
28 int (*open) (struct nfc_hci_dev *hdev);
29 void (*close) (struct nfc_hci_dev *hdev);
30 int (*load_session) (struct nfc_hci_dev *hdev);
31 int (*hci_ready) (struct nfc_hci_dev *hdev);
32 /*
33 * xmit must always send the complete buffer before
34 * returning. Returned result must be 0 for success
35 * or negative for failure.
36 */
37 int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
38 int (*start_poll) (struct nfc_hci_dev *hdev,
39 u32 im_protocols, u32 tm_protocols);
40 void (*stop_poll) (struct nfc_hci_dev *hdev);
41 int (*dep_link_up)(struct nfc_hci_dev *hdev, struct nfc_target *target,
42 u8 comm_mode, u8 *gb, size_t gb_len);
43 int (*dep_link_down)(struct nfc_hci_dev *hdev);
44 int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
45 struct nfc_target *target);
46 int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
47 struct nfc_target *target);
48 int (*im_transceive) (struct nfc_hci_dev *hdev,
49 struct nfc_target *target, struct sk_buff *skb,
50 data_exchange_cb_t cb, void *cb_context);
51 int (*tm_send)(struct nfc_hci_dev *hdev, struct sk_buff *skb);
52 int (*check_presence)(struct nfc_hci_dev *hdev,
53 struct nfc_target *target);
54 int (*event_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
55 struct sk_buff *skb);
56 void (*cmd_received)(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
57 struct sk_buff *skb);
58 int (*fw_download)(struct nfc_hci_dev *hdev, const char *firmware_name);
59 int (*discover_se)(struct nfc_hci_dev *dev);
60 int (*enable_se)(struct nfc_hci_dev *dev, u32 se_idx);
61 int (*disable_se)(struct nfc_hci_dev *dev, u32 se_idx);
62 int (*se_io)(struct nfc_hci_dev *dev, u32 se_idx,
63 u8 *apdu, size_t apdu_length,
64 se_io_cb_t cb, void *cb_context);
65};
66
67/* Pipes */
68#define NFC_HCI_DO_NOT_CREATE_PIPE 0x81
69#define NFC_HCI_INVALID_PIPE 0x80
70#define NFC_HCI_INVALID_GATE 0xFF
71#define NFC_HCI_INVALID_HOST 0x80
72#define NFC_HCI_LINK_MGMT_PIPE 0x00
73#define NFC_HCI_ADMIN_PIPE 0x01
74
75struct nfc_hci_gate {
76 u8 gate;
77 u8 pipe;
78};
79
80struct nfc_hci_pipe {
81 u8 gate;
82 u8 dest_host;
83};
84
85#define NFC_HCI_MAX_CUSTOM_GATES 50
86/*
87 * According to specification 102 622 chapter 4.4 Pipes,
88 * the pipe identifier is 7 bits long.
89 */
90#define NFC_HCI_MAX_PIPES 128
91struct nfc_hci_init_data {
92 u8 gate_count;
93 struct nfc_hci_gate gates[NFC_HCI_MAX_CUSTOM_GATES];
94 char session_id[9];
95};
96
97typedef int (*xmit) (struct sk_buff *skb, void *cb_data);
98
99#define NFC_HCI_MAX_GATES 256
100
101/*
102 * These values can be specified by a driver to indicate it requires some
103 * adaptation of the HCI standard.
104 *
105 * NFC_HCI_QUIRK_SHORT_CLEAR - send HCI_ADM_CLEAR_ALL_PIPE cmd with no params
106 */
107enum {
108 NFC_HCI_QUIRK_SHORT_CLEAR = 0,
109};
110
111struct nfc_hci_dev {
112 struct nfc_dev *ndev;
113
114 u32 max_data_link_payload;
115
116 bool shutting_down;
117
118 struct mutex msg_tx_mutex;
119
120 struct list_head msg_tx_queue;
121
122 struct work_struct msg_tx_work;
123
124 struct timer_list cmd_timer;
125 struct hci_msg *cmd_pending_msg;
126
127 struct sk_buff_head rx_hcp_frags;
128
129 struct work_struct msg_rx_work;
130
131 struct sk_buff_head msg_rx_queue;
132
133 struct nfc_hci_ops *ops;
134
135 struct nfc_llc *llc;
136
137 struct nfc_hci_init_data init_data;
138
139 void *clientdata;
140
141 u8 gate2pipe[NFC_HCI_MAX_GATES];
142 struct nfc_hci_pipe pipes[NFC_HCI_MAX_PIPES];
143
144 u8 sw_romlib;
145 u8 sw_patch;
146 u8 sw_flashlib_major;
147 u8 sw_flashlib_minor;
148
149 u8 hw_derivative;
150 u8 hw_version;
151 u8 hw_mpw;
152 u8 hw_software;
153 u8 hw_bsid;
154
155 int async_cb_type;
156 data_exchange_cb_t async_cb;
157 void *async_cb_context;
158
159 u8 *gb;
160 size_t gb_len;
161
162 unsigned long quirks;
163};
164
165/* hci device allocation */
166struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
167 struct nfc_hci_init_data *init_data,
168 unsigned long quirks,
169 u32 protocols,
170 const char *llc_name,
171 int tx_headroom,
172 int tx_tailroom,
173 int max_link_payload);
174void nfc_hci_free_device(struct nfc_hci_dev *hdev);
175
176int nfc_hci_register_device(struct nfc_hci_dev *hdev);
177void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);
178
179void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
180void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
181
182static inline int nfc_hci_set_vendor_cmds(struct nfc_hci_dev *hdev,
183 struct nfc_vendor_cmd *cmds,
184 int n_cmds)
185{
186 return nfc_set_vendor_cmds(hdev->ndev, cmds, n_cmds);
187}
188
189void nfc_hci_driver_failure(struct nfc_hci_dev *hdev, int err);
190
191int nfc_hci_result_to_errno(u8 result);
192void nfc_hci_reset_pipes(struct nfc_hci_dev *dev);
193void nfc_hci_reset_pipes_per_host(struct nfc_hci_dev *hdev, u8 host);
194
195/* Host IDs */
196#define NFC_HCI_HOST_CONTROLLER_ID 0x00
197#define NFC_HCI_TERMINAL_HOST_ID 0x01
198#define NFC_HCI_UICC_HOST_ID 0x02
199
200/* Host Controller Gates and registry indexes */
201#define NFC_HCI_ADMIN_GATE 0x00
202#define NFC_HCI_ADMIN_SESSION_IDENTITY 0x01
203#define NFC_HCI_ADMIN_MAX_PIPE 0x02
204#define NFC_HCI_ADMIN_WHITELIST 0x03
205#define NFC_HCI_ADMIN_HOST_LIST 0x04
206
207#define NFC_HCI_LOOPBACK_GATE 0x04
208
209#define NFC_HCI_ID_MGMT_GATE 0x05
210#define NFC_HCI_ID_MGMT_VERSION_SW 0x01
211#define NFC_HCI_ID_MGMT_VERSION_HW 0x03
212#define NFC_HCI_ID_MGMT_VENDOR_NAME 0x04
213#define NFC_HCI_ID_MGMT_MODEL_ID 0x05
214#define NFC_HCI_ID_MGMT_HCI_VERSION 0x02
215#define NFC_HCI_ID_MGMT_GATES_LIST 0x06
216
217#define NFC_HCI_LINK_MGMT_GATE 0x06
218#define NFC_HCI_LINK_MGMT_REC_ERROR 0x01
219
220#define NFC_HCI_RF_READER_B_GATE 0x11
221#define NFC_HCI_RF_READER_B_PUPI 0x03
222#define NFC_HCI_RF_READER_B_APPLICATION_DATA 0x04
223#define NFC_HCI_RF_READER_B_AFI 0x02
224#define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE 0x01
225#define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA 0x05
226
227#define NFC_HCI_RF_READER_A_GATE 0x13
228#define NFC_HCI_RF_READER_A_UID 0x02
229#define NFC_HCI_RF_READER_A_ATQA 0x04
230#define NFC_HCI_RF_READER_A_APPLICATION_DATA 0x05
231#define NFC_HCI_RF_READER_A_SAK 0x03
232#define NFC_HCI_RF_READER_A_FWI_SFGT 0x06
233#define NFC_HCI_RF_READER_A_DATARATE_MAX 0x01
234
235#define NFC_HCI_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
236#define NFC_HCI_TYPE_A_SEL_PROT_MIFARE 0
237#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443 1
238#define NFC_HCI_TYPE_A_SEL_PROT_DEP 2
239#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP 3
240
241/* Generic events */
242#define NFC_HCI_EVT_HCI_END_OF_OPERATION 0x01
243#define NFC_HCI_EVT_POST_DATA 0x02
244#define NFC_HCI_EVT_HOT_PLUG 0x03
245
246/* Generic commands */
247#define NFC_HCI_ANY_SET_PARAMETER 0x01
248#define NFC_HCI_ANY_GET_PARAMETER 0x02
249#define NFC_HCI_ANY_OPEN_PIPE 0x03
250#define NFC_HCI_ANY_CLOSE_PIPE 0x04
251
252/* Reader RF gates events */
253#define NFC_HCI_EVT_READER_REQUESTED 0x10
254#define NFC_HCI_EVT_END_OPERATION 0x11
255
256/* Reader Application gate events */
257#define NFC_HCI_EVT_TARGET_DISCOVERED 0x10
258
259/* receiving messages from lower layer */
260void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
261 struct sk_buff *skb);
262void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
263 struct sk_buff *skb);
264void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
265 struct sk_buff *skb);
266void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb);
267
268/* connecting to gates and sending hci instructions */
269int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate,
270 u8 pipe);
271int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate);
272int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev);
273int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
274 struct sk_buff **skb);
275int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
276 const u8 *param, size_t param_len);
277int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
278 const u8 *param, size_t param_len, struct sk_buff **skb);
279int nfc_hci_send_cmd_async(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
280 const u8 *param, size_t param_len,
281 data_exchange_cb_t cb, void *cb_context);
282int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
283 const u8 *param, size_t param_len);
284int nfc_hci_target_discovered(struct nfc_hci_dev *hdev, u8 gate);
285u32 nfc_hci_sak_to_protocol(u8 sak);
286
287#endif /* __NET_HCI_H */
288