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562d4d59 TE |
1 | /* |
2 | * Sony NFC Port-100 Series driver | |
3 | * Copyright (c) 2013, Intel Corporation. | |
4 | * | |
5 | * Partly based/Inspired by Stephen Tiedemann's nfcpy | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify it | |
8 | * under the terms and conditions of the GNU General Public License, | |
9 | * version 2, as published by the Free Software Foundation. | |
10 | * | |
11 | * This program is distributed in the hope it will be useful, but WITHOUT | |
12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
14 | * more details. | |
15 | * | |
16 | */ | |
17 | ||
18 | #include <linux/module.h> | |
19 | #include <linux/usb.h> | |
20 | #include <net/nfc/digital.h> | |
21 | ||
22 | #define VERSION "0.1" | |
23 | ||
24 | #define SONY_VENDOR_ID 0x054c | |
25 | #define RCS380_PRODUCT_ID 0x06c1 | |
26 | ||
27 | #define PORT100_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ | |
28 | NFC_PROTO_MIFARE_MASK | \ | |
29 | NFC_PROTO_FELICA_MASK | \ | |
2a26f9a2 TE |
30 | NFC_PROTO_NFC_DEP_MASK | \ |
31 | NFC_PROTO_ISO14443_MASK) | |
562d4d59 TE |
32 | |
33 | #define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \ | |
34 | NFC_DIGITAL_DRV_CAPS_TG_CRC) | |
35 | ||
0347a6ab TE |
36 | /* Standard port100 frame definitions */ |
37 | #define PORT100_FRAME_HEADER_LEN (sizeof(struct port100_frame) \ | |
38 | + 2) /* data[0] CC, data[1] SCC */ | |
39 | #define PORT100_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ | |
40 | ||
41 | #define PORT100_COMM_RF_HEAD_MAX_LEN (sizeof(struct port100_tg_comm_rf_cmd)) | |
42 | ||
43 | /* | |
44 | * Max extended frame payload len, excluding CC and SCC | |
45 | * which are already in PORT100_FRAME_HEADER_LEN. | |
46 | */ | |
47 | #define PORT100_FRAME_MAX_PAYLOAD_LEN 1001 | |
48 | ||
49 | #define PORT100_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2), | |
50 | Postamble (1) */ | |
51 | static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = { | |
52 | 0x00, 0x00, 0xff, 0x00, 0xff, 0x00 | |
53 | }; | |
54 | ||
55 | #define PORT100_FRAME_CHECKSUM(f) (f->data[le16_to_cpu(f->datalen)]) | |
56 | #define PORT100_FRAME_POSTAMBLE(f) (f->data[le16_to_cpu(f->datalen) + 1]) | |
57 | ||
58 | /* start of frame */ | |
59 | #define PORT100_FRAME_SOF 0x00FF | |
60 | #define PORT100_FRAME_EXT 0xFFFF | |
61 | #define PORT100_FRAME_ACK 0x00FF | |
62 | ||
63 | /* Port-100 command: in or out */ | |
64 | #define PORT100_FRAME_DIRECTION(f) (f->data[0]) /* CC */ | |
65 | #define PORT100_FRAME_DIR_OUT 0xD6 | |
66 | #define PORT100_FRAME_DIR_IN 0xD7 | |
67 | ||
68 | /* Port-100 sub-command */ | |
69 | #define PORT100_FRAME_CMD(f) (f->data[1]) /* SCC */ | |
70 | ||
71 | #define PORT100_CMD_GET_FIRMWARE_VERSION 0x20 | |
72 | #define PORT100_CMD_GET_COMMAND_TYPE 0x28 | |
73 | #define PORT100_CMD_SET_COMMAND_TYPE 0x2A | |
74 | ||
9f7b57f2 TE |
75 | #define PORT100_CMD_IN_SET_RF 0x00 |
76 | #define PORT100_CMD_IN_SET_PROTOCOL 0x02 | |
77 | #define PORT100_CMD_IN_COMM_RF 0x04 | |
78 | ||
7227c021 TE |
79 | #define PORT100_CMD_TG_SET_RF 0x40 |
80 | #define PORT100_CMD_TG_SET_PROTOCOL 0x42 | |
81 | #define PORT100_CMD_TG_SET_RF_OFF 0x46 | |
82 | #define PORT100_CMD_TG_COMM_RF 0x48 | |
83 | ||
9f7b57f2 TE |
84 | #define PORT100_CMD_SWITCH_RF 0x06 |
85 | ||
0347a6ab TE |
86 | #define PORT100_CMD_RESPONSE(cmd) (cmd + 1) |
87 | ||
88 | #define PORT100_CMD_TYPE_IS_SUPPORTED(mask, cmd_type) \ | |
89 | ((mask) & (0x01 << (cmd_type))) | |
90 | #define PORT100_CMD_TYPE_0 0 | |
91 | #define PORT100_CMD_TYPE_1 1 | |
92 | ||
9f7b57f2 TE |
93 | #define PORT100_CMD_STATUS_OK 0x00 |
94 | #define PORT100_CMD_STATUS_TIMEOUT 0x80 | |
95 | ||
7227c021 TE |
96 | #define PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK 0x01 |
97 | #define PORT100_MDAA_TGT_WAS_ACTIVATED_MASK 0x02 | |
98 | ||
0347a6ab TE |
99 | struct port100; |
100 | ||
101 | typedef void (*port100_send_async_complete_t)(struct port100 *dev, void *arg, | |
102 | struct sk_buff *resp); | |
103 | ||
9f7b57f2 TE |
104 | /** |
105 | * Setting sets structure for in_set_rf command | |
106 | * | |
107 | * @in_*_set_number: Represent the entry indexes in the port-100 RF Base Table. | |
108 | * This table contains multiple RF setting sets required for RF | |
109 | * communication. | |
110 | * | |
111 | * @in_*_comm_type: Theses fields set the communication type to be used. | |
112 | */ | |
113 | struct port100_in_rf_setting { | |
114 | u8 in_send_set_number; | |
115 | u8 in_send_comm_type; | |
116 | u8 in_recv_set_number; | |
117 | u8 in_recv_comm_type; | |
118 | } __packed; | |
119 | ||
120 | #define PORT100_COMM_TYPE_IN_212F 0x01 | |
121 | #define PORT100_COMM_TYPE_IN_424F 0x02 | |
122 | #define PORT100_COMM_TYPE_IN_106A 0x03 | |
123 | ||
124 | static const struct port100_in_rf_setting in_rf_settings[] = { | |
125 | [NFC_DIGITAL_RF_TECH_212F] = { | |
126 | .in_send_set_number = 1, | |
127 | .in_send_comm_type = PORT100_COMM_TYPE_IN_212F, | |
128 | .in_recv_set_number = 15, | |
129 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_212F, | |
130 | }, | |
131 | [NFC_DIGITAL_RF_TECH_424F] = { | |
132 | .in_send_set_number = 1, | |
133 | .in_send_comm_type = PORT100_COMM_TYPE_IN_424F, | |
134 | .in_recv_set_number = 15, | |
135 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_424F, | |
136 | }, | |
137 | [NFC_DIGITAL_RF_TECH_106A] = { | |
138 | .in_send_set_number = 2, | |
139 | .in_send_comm_type = PORT100_COMM_TYPE_IN_106A, | |
140 | .in_recv_set_number = 15, | |
141 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_106A, | |
142 | }, | |
d3815ea9 TE |
143 | /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ |
144 | [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, | |
9f7b57f2 TE |
145 | }; |
146 | ||
7227c021 TE |
147 | /** |
148 | * Setting sets structure for tg_set_rf command | |
149 | * | |
150 | * @tg_set_number: Represents the entry index in the port-100 RF Base Table. | |
151 | * This table contains multiple RF setting sets required for RF | |
152 | * communication. this field is used for both send and receive | |
153 | * settings. | |
154 | * | |
155 | * @tg_comm_type: Sets the communication type to be used to send and receive | |
156 | * data. | |
157 | */ | |
158 | struct port100_tg_rf_setting { | |
159 | u8 tg_set_number; | |
160 | u8 tg_comm_type; | |
161 | } __packed; | |
162 | ||
163 | #define PORT100_COMM_TYPE_TG_106A 0x0B | |
164 | #define PORT100_COMM_TYPE_TG_212F 0x0C | |
165 | #define PORT100_COMM_TYPE_TG_424F 0x0D | |
166 | ||
167 | static const struct port100_tg_rf_setting tg_rf_settings[] = { | |
168 | [NFC_DIGITAL_RF_TECH_106A] = { | |
169 | .tg_set_number = 8, | |
170 | .tg_comm_type = PORT100_COMM_TYPE_TG_106A, | |
171 | }, | |
172 | [NFC_DIGITAL_RF_TECH_212F] = { | |
173 | .tg_set_number = 8, | |
174 | .tg_comm_type = PORT100_COMM_TYPE_TG_212F, | |
175 | }, | |
176 | [NFC_DIGITAL_RF_TECH_424F] = { | |
177 | .tg_set_number = 8, | |
178 | .tg_comm_type = PORT100_COMM_TYPE_TG_424F, | |
179 | }, | |
d3815ea9 TE |
180 | /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ |
181 | [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, | |
182 | ||
7227c021 TE |
183 | }; |
184 | ||
9f7b57f2 TE |
185 | #define PORT100_IN_PROT_INITIAL_GUARD_TIME 0x00 |
186 | #define PORT100_IN_PROT_ADD_CRC 0x01 | |
187 | #define PORT100_IN_PROT_CHECK_CRC 0x02 | |
188 | #define PORT100_IN_PROT_MULTI_CARD 0x03 | |
189 | #define PORT100_IN_PROT_ADD_PARITY 0x04 | |
190 | #define PORT100_IN_PROT_CHECK_PARITY 0x05 | |
191 | #define PORT100_IN_PROT_BITWISE_AC_RECV_MODE 0x06 | |
192 | #define PORT100_IN_PROT_VALID_BIT_NUMBER 0x07 | |
193 | #define PORT100_IN_PROT_CRYPTO1 0x08 | |
194 | #define PORT100_IN_PROT_ADD_SOF 0x09 | |
195 | #define PORT100_IN_PROT_CHECK_SOF 0x0A | |
196 | #define PORT100_IN_PROT_ADD_EOF 0x0B | |
197 | #define PORT100_IN_PROT_CHECK_EOF 0x0C | |
198 | #define PORT100_IN_PROT_DEAF_TIME 0x0E | |
199 | #define PORT100_IN_PROT_CRM 0x0F | |
200 | #define PORT100_IN_PROT_CRM_MIN_LEN 0x10 | |
201 | #define PORT100_IN_PROT_T1_TAG_FRAME 0x11 | |
202 | #define PORT100_IN_PROT_RFCA 0x12 | |
203 | #define PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR 0x13 | |
204 | #define PORT100_IN_PROT_END 0x14 | |
205 | ||
206 | #define PORT100_IN_MAX_NUM_PROTOCOLS 19 | |
207 | ||
7227c021 TE |
208 | #define PORT100_TG_PROT_TU 0x00 |
209 | #define PORT100_TG_PROT_RF_OFF 0x01 | |
210 | #define PORT100_TG_PROT_CRM 0x02 | |
211 | #define PORT100_TG_PROT_END 0x03 | |
212 | ||
213 | #define PORT100_TG_MAX_NUM_PROTOCOLS 3 | |
214 | ||
9f7b57f2 TE |
215 | struct port100_protocol { |
216 | u8 number; | |
217 | u8 value; | |
218 | } __packed; | |
219 | ||
220 | static struct port100_protocol | |
221 | in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = { | |
222 | [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { | |
223 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, | |
224 | { PORT100_IN_PROT_ADD_CRC, 0 }, | |
225 | { PORT100_IN_PROT_CHECK_CRC, 0 }, | |
226 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
227 | { PORT100_IN_PROT_ADD_PARITY, 0 }, | |
228 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, | |
229 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
230 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 7 }, | |
231 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
232 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
233 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
234 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
235 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
236 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
237 | { PORT100_IN_PROT_CRM, 0 }, | |
238 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
239 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
240 | { PORT100_IN_PROT_RFCA, 0 }, | |
241 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
242 | { PORT100_IN_PROT_END, 0 }, | |
243 | }, | |
244 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { | |
245 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, | |
246 | { PORT100_IN_PROT_ADD_CRC, 0 }, | |
247 | { PORT100_IN_PROT_CHECK_CRC, 0 }, | |
248 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
249 | { PORT100_IN_PROT_ADD_PARITY, 1 }, | |
250 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, | |
251 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
252 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
253 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
254 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
255 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
256 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
257 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
258 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
259 | { PORT100_IN_PROT_CRM, 0 }, | |
260 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
261 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
262 | { PORT100_IN_PROT_RFCA, 0 }, | |
263 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
264 | { PORT100_IN_PROT_END, 0 }, | |
265 | }, | |
266 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { | |
267 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, | |
268 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
269 | { PORT100_IN_PROT_CHECK_CRC, 1 }, | |
270 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
271 | { PORT100_IN_PROT_ADD_PARITY, 1 }, | |
272 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, | |
273 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
274 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
275 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
276 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
277 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
278 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
279 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
280 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
281 | { PORT100_IN_PROT_CRM, 0 }, | |
282 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
283 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
284 | { PORT100_IN_PROT_RFCA, 0 }, | |
285 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
286 | { PORT100_IN_PROT_END, 0 }, | |
287 | }, | |
288 | [NFC_DIGITAL_FRAMING_NFCA_T1T] = { | |
289 | /* nfc_digital_framing_nfca_short */ | |
290 | { PORT100_IN_PROT_ADD_CRC, 2 }, | |
291 | { PORT100_IN_PROT_CHECK_CRC, 2 }, | |
292 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
293 | { PORT100_IN_PROT_T1_TAG_FRAME, 2 }, | |
294 | { PORT100_IN_PROT_END, 0 }, | |
295 | }, | |
296 | [NFC_DIGITAL_FRAMING_NFCA_T2T] = { | |
297 | /* nfc_digital_framing_nfca_standard */ | |
298 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
299 | { PORT100_IN_PROT_CHECK_CRC, 0 }, | |
300 | { PORT100_IN_PROT_END, 0 }, | |
301 | }, | |
2a26f9a2 TE |
302 | [NFC_DIGITAL_FRAMING_NFCA_T4T] = { |
303 | /* nfc_digital_framing_nfca_standard_with_crc_a */ | |
304 | { PORT100_IN_PROT_END, 0 }, | |
305 | }, | |
9f7b57f2 TE |
306 | [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { |
307 | /* nfc_digital_framing_nfca_standard */ | |
308 | { PORT100_IN_PROT_END, 0 }, | |
309 | }, | |
310 | [NFC_DIGITAL_FRAMING_NFCF] = { | |
311 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 }, | |
312 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
313 | { PORT100_IN_PROT_CHECK_CRC, 1 }, | |
314 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
315 | { PORT100_IN_PROT_ADD_PARITY, 0 }, | |
316 | { PORT100_IN_PROT_CHECK_PARITY, 0 }, | |
317 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
318 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
319 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
320 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
321 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
322 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
323 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
324 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
325 | { PORT100_IN_PROT_CRM, 0 }, | |
326 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
327 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
328 | { PORT100_IN_PROT_RFCA, 0 }, | |
329 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
330 | { PORT100_IN_PROT_END, 0 }, | |
331 | }, | |
332 | [NFC_DIGITAL_FRAMING_NFCF_T3T] = { | |
333 | /* nfc_digital_framing_nfcf */ | |
334 | { PORT100_IN_PROT_END, 0 }, | |
335 | }, | |
336 | [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { | |
337 | /* nfc_digital_framing_nfcf */ | |
338 | { PORT100_IN_PROT_END, 0 }, | |
339 | }, | |
340 | [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { | |
341 | { PORT100_IN_PROT_END, 0 }, | |
342 | }, | |
d3815ea9 TE |
343 | /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ |
344 | [NFC_DIGITAL_FRAMING_LAST] = { | |
345 | { PORT100_IN_PROT_END, 0 }, | |
346 | }, | |
9f7b57f2 TE |
347 | }; |
348 | ||
7227c021 TE |
349 | static struct port100_protocol |
350 | tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = { | |
351 | [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { | |
352 | { PORT100_TG_PROT_END, 0 }, | |
353 | }, | |
354 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { | |
355 | { PORT100_TG_PROT_END, 0 }, | |
356 | }, | |
357 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { | |
358 | { PORT100_TG_PROT_END, 0 }, | |
359 | }, | |
360 | [NFC_DIGITAL_FRAMING_NFCA_T1T] = { | |
361 | { PORT100_TG_PROT_END, 0 }, | |
362 | }, | |
363 | [NFC_DIGITAL_FRAMING_NFCA_T2T] = { | |
364 | { PORT100_TG_PROT_END, 0 }, | |
365 | }, | |
366 | [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { | |
367 | { PORT100_TG_PROT_TU, 1 }, | |
368 | { PORT100_TG_PROT_RF_OFF, 0 }, | |
369 | { PORT100_TG_PROT_CRM, 7 }, | |
370 | { PORT100_TG_PROT_END, 0 }, | |
371 | }, | |
372 | [NFC_DIGITAL_FRAMING_NFCF] = { | |
373 | { PORT100_TG_PROT_END, 0 }, | |
374 | }, | |
375 | [NFC_DIGITAL_FRAMING_NFCF_T3T] = { | |
376 | { PORT100_TG_PROT_END, 0 }, | |
377 | }, | |
378 | [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { | |
379 | { PORT100_TG_PROT_TU, 1 }, | |
380 | { PORT100_TG_PROT_RF_OFF, 0 }, | |
381 | { PORT100_TG_PROT_CRM, 7 }, | |
382 | { PORT100_TG_PROT_END, 0 }, | |
383 | }, | |
384 | [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { | |
385 | { PORT100_TG_PROT_RF_OFF, 1 }, | |
386 | { PORT100_TG_PROT_END, 0 }, | |
387 | }, | |
d3815ea9 TE |
388 | /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ |
389 | [NFC_DIGITAL_FRAMING_LAST] = { | |
390 | { PORT100_TG_PROT_END, 0 }, | |
391 | }, | |
7227c021 TE |
392 | }; |
393 | ||
562d4d59 TE |
394 | struct port100 { |
395 | struct nfc_digital_dev *nfc_digital_dev; | |
396 | ||
397 | int skb_headroom; | |
398 | int skb_tailroom; | |
399 | ||
400 | struct usb_device *udev; | |
401 | struct usb_interface *interface; | |
0347a6ab TE |
402 | |
403 | struct urb *out_urb; | |
404 | struct urb *in_urb; | |
405 | ||
406 | struct work_struct cmd_complete_work; | |
407 | ||
408 | u8 cmd_type; | |
409 | ||
410 | /* The digital stack serializes commands to be sent. There is no need | |
411 | * for any queuing/locking mechanism at driver level. | |
412 | */ | |
413 | struct port100_cmd *cmd; | |
414 | }; | |
415 | ||
416 | struct port100_cmd { | |
417 | u8 code; | |
418 | int status; | |
419 | struct sk_buff *req; | |
420 | struct sk_buff *resp; | |
421 | int resp_len; | |
422 | port100_send_async_complete_t complete_cb; | |
423 | void *complete_cb_context; | |
424 | }; | |
425 | ||
426 | struct port100_frame { | |
427 | u8 preamble; | |
428 | __be16 start_frame; | |
429 | __be16 extended_frame; | |
430 | __le16 datalen; | |
431 | u8 datalen_checksum; | |
432 | u8 data[]; | |
433 | } __packed; | |
434 | ||
435 | struct port100_ack_frame { | |
436 | u8 preamble; | |
437 | __be16 start_frame; | |
438 | __be16 ack_frame; | |
439 | u8 postambule; | |
440 | } __packed; | |
441 | ||
442 | struct port100_cb_arg { | |
443 | nfc_digital_cmd_complete_t complete_cb; | |
444 | void *complete_arg; | |
445 | u8 mdaa; | |
562d4d59 TE |
446 | }; |
447 | ||
0347a6ab TE |
448 | struct port100_tg_comm_rf_cmd { |
449 | __le16 guard_time; | |
450 | __le16 send_timeout; | |
451 | u8 mdaa; | |
452 | u8 nfca_param[6]; | |
453 | u8 nfcf_param[18]; | |
454 | u8 mf_halted; | |
455 | u8 arae_flag; | |
456 | __le16 recv_timeout; | |
457 | u8 data[]; | |
458 | } __packed; | |
459 | ||
7227c021 TE |
460 | struct port100_tg_comm_rf_res { |
461 | u8 comm_type; | |
462 | u8 ar_status; | |
463 | u8 target_activated; | |
464 | __le32 status; | |
465 | u8 data[]; | |
466 | } __packed; | |
467 | ||
0347a6ab TE |
468 | /* The rule: value + checksum = 0 */ |
469 | static inline u8 port100_checksum(u16 value) | |
470 | { | |
471 | return ~(((u8 *)&value)[0] + ((u8 *)&value)[1]) + 1; | |
472 | } | |
473 | ||
474 | /* The rule: sum(data elements) + checksum = 0 */ | |
475 | static u8 port100_data_checksum(u8 *data, int datalen) | |
476 | { | |
477 | u8 sum = 0; | |
478 | int i; | |
479 | ||
480 | for (i = 0; i < datalen; i++) | |
481 | sum += data[i]; | |
482 | ||
483 | return port100_checksum(sum); | |
484 | } | |
485 | ||
486 | static void port100_tx_frame_init(void *_frame, u8 cmd_code) | |
487 | { | |
488 | struct port100_frame *frame = _frame; | |
489 | ||
490 | frame->preamble = 0; | |
491 | frame->start_frame = cpu_to_be16(PORT100_FRAME_SOF); | |
492 | frame->extended_frame = cpu_to_be16(PORT100_FRAME_EXT); | |
493 | PORT100_FRAME_DIRECTION(frame) = PORT100_FRAME_DIR_OUT; | |
494 | PORT100_FRAME_CMD(frame) = cmd_code; | |
495 | frame->datalen = cpu_to_le16(2); | |
496 | } | |
497 | ||
498 | static void port100_tx_frame_finish(void *_frame) | |
499 | { | |
500 | struct port100_frame *frame = _frame; | |
501 | ||
502 | frame->datalen_checksum = port100_checksum(le16_to_cpu(frame->datalen)); | |
503 | ||
504 | PORT100_FRAME_CHECKSUM(frame) = | |
505 | port100_data_checksum(frame->data, le16_to_cpu(frame->datalen)); | |
506 | ||
507 | PORT100_FRAME_POSTAMBLE(frame) = 0; | |
508 | } | |
509 | ||
510 | static void port100_tx_update_payload_len(void *_frame, int len) | |
511 | { | |
512 | struct port100_frame *frame = _frame; | |
513 | ||
514 | frame->datalen = cpu_to_le16(le16_to_cpu(frame->datalen) + len); | |
515 | } | |
516 | ||
517 | static bool port100_rx_frame_is_valid(void *_frame) | |
518 | { | |
519 | u8 checksum; | |
520 | struct port100_frame *frame = _frame; | |
521 | ||
522 | if (frame->start_frame != cpu_to_be16(PORT100_FRAME_SOF) || | |
523 | frame->extended_frame != cpu_to_be16(PORT100_FRAME_EXT)) | |
524 | return false; | |
525 | ||
526 | checksum = port100_checksum(le16_to_cpu(frame->datalen)); | |
527 | if (checksum != frame->datalen_checksum) | |
528 | return false; | |
529 | ||
530 | checksum = port100_data_checksum(frame->data, | |
531 | le16_to_cpu(frame->datalen)); | |
532 | if (checksum != PORT100_FRAME_CHECKSUM(frame)) | |
533 | return false; | |
534 | ||
535 | return true; | |
536 | } | |
537 | ||
538 | static bool port100_rx_frame_is_ack(struct port100_ack_frame *frame) | |
539 | { | |
540 | return (frame->start_frame == cpu_to_be16(PORT100_FRAME_SOF) && | |
541 | frame->ack_frame == cpu_to_be16(PORT100_FRAME_ACK)); | |
542 | } | |
543 | ||
544 | static inline int port100_rx_frame_size(void *frame) | |
545 | { | |
546 | struct port100_frame *f = frame; | |
547 | ||
548 | return sizeof(struct port100_frame) + le16_to_cpu(f->datalen) + | |
549 | PORT100_FRAME_TAIL_LEN; | |
550 | } | |
551 | ||
552 | static bool port100_rx_frame_is_cmd_response(struct port100 *dev, void *frame) | |
553 | { | |
554 | struct port100_frame *f = frame; | |
555 | ||
556 | return (PORT100_FRAME_CMD(f) == PORT100_CMD_RESPONSE(dev->cmd->code)); | |
557 | } | |
558 | ||
559 | static void port100_recv_response(struct urb *urb) | |
560 | { | |
561 | struct port100 *dev = urb->context; | |
562 | struct port100_cmd *cmd = dev->cmd; | |
563 | u8 *in_frame; | |
564 | ||
565 | cmd->status = urb->status; | |
566 | ||
567 | switch (urb->status) { | |
568 | case 0: | |
569 | break; /* success */ | |
570 | case -ECONNRESET: | |
571 | case -ENOENT: | |
572 | nfc_err(&dev->interface->dev, | |
573 | "The urb has been canceled (status %d)", urb->status); | |
574 | goto sched_wq; | |
575 | case -ESHUTDOWN: | |
576 | default: | |
577 | nfc_err(&dev->interface->dev, "Urb failure (status %d)", | |
578 | urb->status); | |
579 | goto sched_wq; | |
580 | } | |
581 | ||
582 | in_frame = dev->in_urb->transfer_buffer; | |
583 | ||
584 | if (!port100_rx_frame_is_valid(in_frame)) { | |
585 | nfc_err(&dev->interface->dev, "Received an invalid frame"); | |
586 | cmd->status = -EIO; | |
587 | goto sched_wq; | |
588 | } | |
589 | ||
590 | print_hex_dump_debug("PORT100 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, | |
591 | port100_rx_frame_size(in_frame), false); | |
592 | ||
593 | if (!port100_rx_frame_is_cmd_response(dev, in_frame)) { | |
594 | nfc_err(&dev->interface->dev, | |
595 | "It's not the response to the last command"); | |
596 | cmd->status = -EIO; | |
597 | goto sched_wq; | |
598 | } | |
599 | ||
600 | sched_wq: | |
601 | schedule_work(&dev->cmd_complete_work); | |
602 | } | |
603 | ||
604 | static int port100_submit_urb_for_response(struct port100 *dev, gfp_t flags) | |
605 | { | |
606 | dev->in_urb->complete = port100_recv_response; | |
607 | ||
608 | return usb_submit_urb(dev->in_urb, flags); | |
609 | } | |
610 | ||
611 | static void port100_recv_ack(struct urb *urb) | |
612 | { | |
613 | struct port100 *dev = urb->context; | |
614 | struct port100_cmd *cmd = dev->cmd; | |
615 | struct port100_ack_frame *in_frame; | |
616 | int rc; | |
617 | ||
618 | cmd->status = urb->status; | |
619 | ||
620 | switch (urb->status) { | |
621 | case 0: | |
622 | break; /* success */ | |
623 | case -ECONNRESET: | |
624 | case -ENOENT: | |
625 | nfc_err(&dev->interface->dev, | |
626 | "The urb has been stopped (status %d)", urb->status); | |
627 | goto sched_wq; | |
628 | case -ESHUTDOWN: | |
629 | default: | |
630 | nfc_err(&dev->interface->dev, "Urb failure (status %d)", | |
631 | urb->status); | |
632 | goto sched_wq; | |
633 | } | |
634 | ||
635 | in_frame = dev->in_urb->transfer_buffer; | |
636 | ||
637 | if (!port100_rx_frame_is_ack(in_frame)) { | |
638 | nfc_err(&dev->interface->dev, "Received an invalid ack"); | |
639 | cmd->status = -EIO; | |
640 | goto sched_wq; | |
641 | } | |
642 | ||
643 | rc = port100_submit_urb_for_response(dev, GFP_ATOMIC); | |
644 | if (rc) { | |
645 | nfc_err(&dev->interface->dev, | |
646 | "usb_submit_urb failed with result %d", rc); | |
647 | cmd->status = rc; | |
648 | goto sched_wq; | |
649 | } | |
650 | ||
651 | return; | |
652 | ||
653 | sched_wq: | |
654 | schedule_work(&dev->cmd_complete_work); | |
655 | } | |
656 | ||
657 | static int port100_submit_urb_for_ack(struct port100 *dev, gfp_t flags) | |
658 | { | |
659 | dev->in_urb->complete = port100_recv_ack; | |
660 | ||
661 | return usb_submit_urb(dev->in_urb, flags); | |
662 | } | |
663 | ||
664 | static int port100_send_ack(struct port100 *dev) | |
665 | { | |
666 | int rc; | |
667 | ||
668 | dev->out_urb->transfer_buffer = ack_frame; | |
669 | dev->out_urb->transfer_buffer_length = sizeof(ack_frame); | |
670 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); | |
671 | ||
672 | return rc; | |
673 | } | |
674 | ||
675 | static int port100_send_frame_async(struct port100 *dev, struct sk_buff *out, | |
676 | struct sk_buff *in, int in_len) | |
677 | { | |
678 | int rc; | |
679 | ||
680 | dev->out_urb->transfer_buffer = out->data; | |
681 | dev->out_urb->transfer_buffer_length = out->len; | |
682 | ||
683 | dev->in_urb->transfer_buffer = in->data; | |
684 | dev->in_urb->transfer_buffer_length = in_len; | |
685 | ||
686 | print_hex_dump_debug("PORT100 TX: ", DUMP_PREFIX_NONE, 16, 1, | |
687 | out->data, out->len, false); | |
688 | ||
689 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); | |
690 | if (rc) | |
691 | return rc; | |
692 | ||
693 | rc = port100_submit_urb_for_ack(dev, GFP_KERNEL); | |
694 | if (rc) | |
695 | goto error; | |
696 | ||
697 | return 0; | |
698 | ||
699 | error: | |
700 | usb_unlink_urb(dev->out_urb); | |
701 | return rc; | |
702 | } | |
703 | ||
704 | static void port100_build_cmd_frame(struct port100 *dev, u8 cmd_code, | |
705 | struct sk_buff *skb) | |
706 | { | |
707 | /* payload is already there, just update datalen */ | |
708 | int payload_len = skb->len; | |
709 | ||
710 | skb_push(skb, PORT100_FRAME_HEADER_LEN); | |
711 | skb_put(skb, PORT100_FRAME_TAIL_LEN); | |
712 | ||
713 | port100_tx_frame_init(skb->data, cmd_code); | |
714 | port100_tx_update_payload_len(skb->data, payload_len); | |
715 | port100_tx_frame_finish(skb->data); | |
716 | } | |
717 | ||
718 | static void port100_send_async_complete(struct port100 *dev) | |
719 | { | |
720 | struct port100_cmd *cmd = dev->cmd; | |
721 | int status = cmd->status; | |
722 | ||
723 | struct sk_buff *req = cmd->req; | |
724 | struct sk_buff *resp = cmd->resp; | |
725 | ||
726 | dev_kfree_skb(req); | |
727 | ||
728 | dev->cmd = NULL; | |
729 | ||
730 | if (status < 0) { | |
731 | cmd->complete_cb(dev, cmd->complete_cb_context, | |
732 | ERR_PTR(status)); | |
733 | dev_kfree_skb(resp); | |
734 | goto done; | |
735 | } | |
736 | ||
737 | skb_put(resp, port100_rx_frame_size(resp->data)); | |
738 | skb_pull(resp, PORT100_FRAME_HEADER_LEN); | |
739 | skb_trim(resp, resp->len - PORT100_FRAME_TAIL_LEN); | |
740 | ||
741 | cmd->complete_cb(dev, cmd->complete_cb_context, resp); | |
742 | ||
743 | done: | |
744 | kfree(cmd); | |
745 | } | |
746 | ||
747 | static int port100_send_cmd_async(struct port100 *dev, u8 cmd_code, | |
748 | struct sk_buff *req, | |
749 | port100_send_async_complete_t complete_cb, | |
750 | void *complete_cb_context) | |
751 | { | |
752 | struct port100_cmd *cmd; | |
753 | struct sk_buff *resp; | |
754 | int rc; | |
755 | int resp_len = PORT100_FRAME_HEADER_LEN + | |
756 | PORT100_FRAME_MAX_PAYLOAD_LEN + | |
757 | PORT100_FRAME_TAIL_LEN; | |
758 | ||
759 | resp = alloc_skb(resp_len, GFP_KERNEL); | |
760 | if (!resp) | |
761 | return -ENOMEM; | |
762 | ||
763 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
764 | if (!cmd) { | |
765 | dev_kfree_skb(resp); | |
766 | return -ENOMEM; | |
767 | } | |
768 | ||
769 | cmd->code = cmd_code; | |
770 | cmd->req = req; | |
771 | cmd->resp = resp; | |
772 | cmd->resp_len = resp_len; | |
773 | cmd->complete_cb = complete_cb; | |
774 | cmd->complete_cb_context = complete_cb_context; | |
775 | ||
776 | port100_build_cmd_frame(dev, cmd_code, req); | |
777 | ||
778 | dev->cmd = cmd; | |
779 | ||
780 | rc = port100_send_frame_async(dev, req, resp, resp_len); | |
781 | if (rc) { | |
782 | kfree(cmd); | |
783 | dev_kfree_skb(resp); | |
784 | dev->cmd = NULL; | |
785 | } | |
786 | ||
787 | return rc; | |
788 | } | |
789 | ||
790 | struct port100_sync_cmd_response { | |
791 | struct sk_buff *resp; | |
792 | struct completion done; | |
793 | }; | |
794 | ||
795 | static void port100_wq_cmd_complete(struct work_struct *work) | |
796 | { | |
797 | struct port100 *dev = container_of(work, struct port100, | |
798 | cmd_complete_work); | |
799 | ||
800 | port100_send_async_complete(dev); | |
801 | } | |
802 | ||
803 | static void port100_send_sync_complete(struct port100 *dev, void *_arg, | |
804 | struct sk_buff *resp) | |
805 | { | |
806 | struct port100_sync_cmd_response *arg = _arg; | |
807 | ||
808 | arg->resp = resp; | |
809 | complete(&arg->done); | |
810 | } | |
811 | ||
812 | static struct sk_buff *port100_send_cmd_sync(struct port100 *dev, u8 cmd_code, | |
813 | struct sk_buff *req) | |
814 | { | |
815 | int rc; | |
816 | struct port100_sync_cmd_response arg; | |
817 | ||
818 | init_completion(&arg.done); | |
819 | ||
820 | rc = port100_send_cmd_async(dev, cmd_code, req, | |
821 | port100_send_sync_complete, &arg); | |
822 | if (rc) { | |
823 | dev_kfree_skb(req); | |
824 | return ERR_PTR(rc); | |
825 | } | |
826 | ||
827 | wait_for_completion(&arg.done); | |
828 | ||
829 | return arg.resp; | |
830 | } | |
831 | ||
832 | static void port100_send_complete(struct urb *urb) | |
833 | { | |
834 | struct port100 *dev = urb->context; | |
835 | ||
836 | switch (urb->status) { | |
837 | case 0: | |
838 | break; /* success */ | |
839 | case -ECONNRESET: | |
840 | case -ENOENT: | |
841 | nfc_err(&dev->interface->dev, | |
842 | "The urb has been stopped (status %d)", urb->status); | |
843 | break; | |
844 | case -ESHUTDOWN: | |
845 | default: | |
846 | nfc_err(&dev->interface->dev, "Urb failure (status %d)", | |
847 | urb->status); | |
848 | } | |
849 | } | |
850 | ||
562d4d59 TE |
851 | static void port100_abort_cmd(struct nfc_digital_dev *ddev) |
852 | { | |
0347a6ab TE |
853 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
854 | ||
855 | /* An ack will cancel the last issued command */ | |
856 | port100_send_ack(dev); | |
857 | ||
858 | /* cancel the urb request */ | |
859 | usb_kill_urb(dev->in_urb); | |
860 | } | |
861 | ||
862 | static struct sk_buff *port100_alloc_skb(struct port100 *dev, unsigned int size) | |
863 | { | |
864 | struct sk_buff *skb; | |
865 | ||
866 | skb = alloc_skb(dev->skb_headroom + dev->skb_tailroom + size, | |
867 | GFP_KERNEL); | |
868 | if (skb) | |
869 | skb_reserve(skb, dev->skb_headroom); | |
870 | ||
871 | return skb; | |
872 | } | |
873 | ||
874 | static int port100_set_command_type(struct port100 *dev, u8 command_type) | |
875 | { | |
876 | struct sk_buff *skb; | |
877 | struct sk_buff *resp; | |
878 | int rc; | |
879 | ||
880 | skb = port100_alloc_skb(dev, 1); | |
881 | if (!skb) | |
882 | return -ENOMEM; | |
883 | ||
884 | *skb_put(skb, sizeof(u8)) = command_type; | |
885 | ||
886 | resp = port100_send_cmd_sync(dev, PORT100_CMD_SET_COMMAND_TYPE, skb); | |
887 | if (IS_ERR(resp)) | |
888 | return PTR_ERR(resp); | |
889 | ||
890 | rc = resp->data[0]; | |
891 | ||
892 | dev_kfree_skb(resp); | |
893 | ||
894 | return rc; | |
895 | } | |
896 | ||
897 | static u64 port100_get_command_type_mask(struct port100 *dev) | |
898 | { | |
899 | struct sk_buff *skb; | |
900 | struct sk_buff *resp; | |
901 | u64 mask; | |
902 | ||
903 | skb = port100_alloc_skb(dev, 0); | |
904 | if (!skb) | |
905 | return -ENOMEM; | |
906 | ||
907 | resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb); | |
908 | if (IS_ERR(resp)) | |
909 | return PTR_ERR(resp); | |
910 | ||
911 | if (resp->len < 8) | |
912 | mask = 0; | |
913 | else | |
914 | mask = be64_to_cpu(*(__be64 *)resp->data); | |
915 | ||
916 | dev_kfree_skb(resp); | |
917 | ||
918 | return mask; | |
919 | } | |
920 | ||
921 | static u16 port100_get_firmware_version(struct port100 *dev) | |
922 | { | |
923 | struct sk_buff *skb; | |
924 | struct sk_buff *resp; | |
925 | u16 fw_ver; | |
926 | ||
927 | skb = port100_alloc_skb(dev, 0); | |
928 | if (!skb) | |
929 | return 0; | |
930 | ||
931 | resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_FIRMWARE_VERSION, | |
932 | skb); | |
933 | if (IS_ERR(resp)) | |
934 | return 0; | |
935 | ||
936 | fw_ver = le16_to_cpu(*(__le16 *)resp->data); | |
937 | ||
938 | dev_kfree_skb(resp); | |
939 | ||
940 | return fw_ver; | |
562d4d59 TE |
941 | } |
942 | ||
943 | static int port100_switch_rf(struct nfc_digital_dev *ddev, bool on) | |
944 | { | |
9f7b57f2 TE |
945 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
946 | struct sk_buff *skb, *resp; | |
947 | ||
948 | skb = port100_alloc_skb(dev, 1); | |
949 | if (!skb) | |
950 | return -ENOMEM; | |
951 | ||
952 | *skb_put(skb, 1) = on ? 1 : 0; | |
953 | ||
954 | resp = port100_send_cmd_sync(dev, PORT100_CMD_SWITCH_RF, skb); | |
955 | ||
956 | if (IS_ERR(resp)) | |
957 | return PTR_ERR(resp); | |
958 | ||
959 | dev_kfree_skb(resp); | |
960 | ||
961 | return 0; | |
962 | } | |
963 | ||
964 | static int port100_in_set_rf(struct nfc_digital_dev *ddev, u8 rf) | |
965 | { | |
966 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
967 | struct sk_buff *skb; | |
968 | struct sk_buff *resp; | |
969 | int rc; | |
970 | ||
971 | if (rf >= NFC_DIGITAL_RF_TECH_LAST) | |
972 | return -EINVAL; | |
973 | ||
974 | skb = port100_alloc_skb(dev, sizeof(struct port100_in_rf_setting)); | |
975 | if (!skb) | |
976 | return -ENOMEM; | |
977 | ||
978 | memcpy(skb_put(skb, sizeof(struct port100_in_rf_setting)), | |
979 | &in_rf_settings[rf], | |
980 | sizeof(struct port100_in_rf_setting)); | |
981 | ||
982 | resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_RF, skb); | |
983 | ||
984 | if (IS_ERR(resp)) | |
985 | return PTR_ERR(resp); | |
986 | ||
987 | rc = resp->data[0]; | |
988 | ||
989 | dev_kfree_skb(resp); | |
990 | ||
991 | return rc; | |
992 | } | |
993 | ||
994 | static int port100_in_set_framing(struct nfc_digital_dev *ddev, int param) | |
995 | { | |
996 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
997 | struct port100_protocol *protocols; | |
998 | struct sk_buff *skb; | |
999 | struct sk_buff *resp; | |
1000 | int num_protocols; | |
1001 | size_t size; | |
1002 | int rc; | |
1003 | ||
1004 | if (param >= NFC_DIGITAL_FRAMING_LAST) | |
1005 | return -EINVAL; | |
1006 | ||
1007 | protocols = in_protocols[param]; | |
1008 | ||
1009 | num_protocols = 0; | |
1010 | while (protocols[num_protocols].number != PORT100_IN_PROT_END) | |
1011 | num_protocols++; | |
1012 | ||
1013 | if (!num_protocols) | |
1014 | return 0; | |
1015 | ||
1016 | size = sizeof(struct port100_protocol) * num_protocols; | |
1017 | ||
1018 | skb = port100_alloc_skb(dev, size); | |
1019 | if (!skb) | |
1020 | return -ENOMEM; | |
1021 | ||
1022 | memcpy(skb_put(skb, size), protocols, size); | |
1023 | ||
1024 | resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_PROTOCOL, skb); | |
1025 | ||
1026 | if (IS_ERR(resp)) | |
1027 | return PTR_ERR(resp); | |
1028 | ||
1029 | rc = resp->data[0]; | |
1030 | ||
1031 | dev_kfree_skb(resp); | |
1032 | ||
1033 | return rc; | |
562d4d59 TE |
1034 | } |
1035 | ||
1036 | static int port100_in_configure_hw(struct nfc_digital_dev *ddev, int type, | |
1037 | int param) | |
1038 | { | |
9f7b57f2 TE |
1039 | if (type == NFC_DIGITAL_CONFIG_RF_TECH) |
1040 | return port100_in_set_rf(ddev, param); | |
1041 | ||
1042 | if (type == NFC_DIGITAL_CONFIG_FRAMING) | |
1043 | return port100_in_set_framing(ddev, param); | |
1044 | ||
1045 | return -EINVAL; | |
1046 | } | |
1047 | ||
1048 | static void port100_in_comm_rf_complete(struct port100 *dev, void *arg, | |
1049 | struct sk_buff *resp) | |
1050 | { | |
1051 | struct port100_cb_arg *cb_arg = arg; | |
1052 | nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; | |
1053 | u32 status; | |
1054 | int rc; | |
1055 | ||
1056 | if (IS_ERR(resp)) { | |
1057 | rc = PTR_ERR(resp); | |
1058 | goto exit; | |
1059 | } | |
1060 | ||
1061 | if (resp->len < 4) { | |
1062 | nfc_err(&dev->interface->dev, | |
1063 | "Invalid packet length received.\n"); | |
1064 | rc = -EIO; | |
1065 | goto error; | |
1066 | } | |
1067 | ||
1068 | status = le32_to_cpu(*(__le32 *)resp->data); | |
1069 | ||
1070 | skb_pull(resp, sizeof(u32)); | |
1071 | ||
1072 | if (status == PORT100_CMD_STATUS_TIMEOUT) { | |
1073 | rc = -ETIMEDOUT; | |
1074 | goto error; | |
1075 | } | |
1076 | ||
1077 | if (status != PORT100_CMD_STATUS_OK) { | |
1078 | nfc_err(&dev->interface->dev, | |
1079 | "in_comm_rf failed with status 0x%08x\n", status); | |
1080 | rc = -EIO; | |
1081 | goto error; | |
1082 | } | |
1083 | ||
1084 | /* Remove collision bits byte */ | |
1085 | skb_pull(resp, 1); | |
1086 | ||
1087 | goto exit; | |
1088 | ||
1089 | error: | |
1090 | kfree_skb(resp); | |
1091 | resp = ERR_PTR(rc); | |
1092 | ||
1093 | exit: | |
1094 | cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); | |
1095 | ||
1096 | kfree(cb_arg); | |
562d4d59 TE |
1097 | } |
1098 | ||
1099 | static int port100_in_send_cmd(struct nfc_digital_dev *ddev, | |
1100 | struct sk_buff *skb, u16 _timeout, | |
1101 | nfc_digital_cmd_complete_t cb, void *arg) | |
1102 | { | |
9f7b57f2 TE |
1103 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1104 | struct port100_cb_arg *cb_arg; | |
1105 | __le16 timeout; | |
1106 | ||
1107 | cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); | |
1108 | if (!cb_arg) | |
1109 | return -ENOMEM; | |
1110 | ||
1111 | cb_arg->complete_cb = cb; | |
1112 | cb_arg->complete_arg = arg; | |
1113 | ||
1114 | timeout = cpu_to_le16(_timeout * 10); | |
1115 | ||
1116 | memcpy(skb_push(skb, sizeof(__le16)), &timeout, sizeof(__le16)); | |
1117 | ||
1118 | return port100_send_cmd_async(dev, PORT100_CMD_IN_COMM_RF, skb, | |
1119 | port100_in_comm_rf_complete, cb_arg); | |
562d4d59 TE |
1120 | } |
1121 | ||
7227c021 TE |
1122 | static int port100_tg_set_rf(struct nfc_digital_dev *ddev, u8 rf) |
1123 | { | |
1124 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
1125 | struct sk_buff *skb; | |
1126 | struct sk_buff *resp; | |
1127 | int rc; | |
1128 | ||
1129 | if (rf >= NFC_DIGITAL_RF_TECH_LAST) | |
1130 | return -EINVAL; | |
1131 | ||
1132 | skb = port100_alloc_skb(dev, sizeof(struct port100_tg_rf_setting)); | |
1133 | if (!skb) | |
1134 | return -ENOMEM; | |
1135 | ||
1136 | memcpy(skb_put(skb, sizeof(struct port100_tg_rf_setting)), | |
1137 | &tg_rf_settings[rf], | |
1138 | sizeof(struct port100_tg_rf_setting)); | |
1139 | ||
1140 | resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_RF, skb); | |
1141 | ||
1142 | if (IS_ERR(resp)) | |
1143 | return PTR_ERR(resp); | |
1144 | ||
1145 | rc = resp->data[0]; | |
1146 | ||
1147 | dev_kfree_skb(resp); | |
1148 | ||
1149 | return rc; | |
1150 | } | |
1151 | ||
1152 | static int port100_tg_set_framing(struct nfc_digital_dev *ddev, int param) | |
1153 | { | |
1154 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
1155 | struct port100_protocol *protocols; | |
1156 | struct sk_buff *skb; | |
1157 | struct sk_buff *resp; | |
1158 | int rc; | |
1159 | int num_protocols; | |
1160 | size_t size; | |
1161 | ||
1162 | if (param >= NFC_DIGITAL_FRAMING_LAST) | |
1163 | return -EINVAL; | |
1164 | ||
1165 | protocols = tg_protocols[param]; | |
1166 | ||
1167 | num_protocols = 0; | |
1168 | while (protocols[num_protocols].number != PORT100_TG_PROT_END) | |
1169 | num_protocols++; | |
1170 | ||
1171 | if (!num_protocols) | |
1172 | return 0; | |
1173 | ||
1174 | size = sizeof(struct port100_protocol) * num_protocols; | |
1175 | ||
1176 | skb = port100_alloc_skb(dev, size); | |
1177 | if (!skb) | |
1178 | return -ENOMEM; | |
1179 | ||
1180 | memcpy(skb_put(skb, size), protocols, size); | |
1181 | ||
1182 | resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_PROTOCOL, skb); | |
1183 | ||
1184 | if (IS_ERR(resp)) | |
1185 | return PTR_ERR(resp); | |
1186 | ||
1187 | rc = resp->data[0]; | |
1188 | ||
1189 | dev_kfree_skb(resp); | |
1190 | ||
1191 | return rc; | |
1192 | } | |
1193 | ||
562d4d59 TE |
1194 | static int port100_tg_configure_hw(struct nfc_digital_dev *ddev, int type, |
1195 | int param) | |
1196 | { | |
7227c021 TE |
1197 | if (type == NFC_DIGITAL_CONFIG_RF_TECH) |
1198 | return port100_tg_set_rf(ddev, param); | |
1199 | ||
1200 | if (type == NFC_DIGITAL_CONFIG_FRAMING) | |
1201 | return port100_tg_set_framing(ddev, param); | |
1202 | ||
1203 | return -EINVAL; | |
1204 | } | |
1205 | ||
1206 | static bool port100_tg_target_activated(struct port100 *dev, u8 tgt_activated) | |
1207 | { | |
1208 | u8 mask; | |
1209 | ||
1210 | switch (dev->cmd_type) { | |
1211 | case PORT100_CMD_TYPE_0: | |
1212 | mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK; | |
1213 | break; | |
1214 | case PORT100_CMD_TYPE_1: | |
1215 | mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK | | |
1216 | PORT100_MDAA_TGT_WAS_ACTIVATED_MASK; | |
1217 | break; | |
1218 | default: | |
1219 | nfc_err(&dev->interface->dev, "Unknonwn command type.\n"); | |
1220 | return false; | |
1221 | } | |
1222 | ||
1223 | return ((tgt_activated & mask) == mask); | |
1224 | } | |
1225 | ||
1226 | static void port100_tg_comm_rf_complete(struct port100 *dev, void *arg, | |
1227 | struct sk_buff *resp) | |
1228 | { | |
1229 | u32 status; | |
1230 | struct port100_cb_arg *cb_arg = arg; | |
1231 | nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; | |
1232 | struct port100_tg_comm_rf_res *hdr; | |
1233 | ||
1234 | if (IS_ERR(resp)) | |
1235 | goto exit; | |
1236 | ||
1237 | hdr = (struct port100_tg_comm_rf_res *)resp->data; | |
1238 | ||
1239 | status = le32_to_cpu(hdr->status); | |
1240 | ||
1241 | if (cb_arg->mdaa && | |
1242 | !port100_tg_target_activated(dev, hdr->target_activated)) { | |
1243 | kfree_skb(resp); | |
1244 | resp = ERR_PTR(-ETIMEDOUT); | |
1245 | ||
1246 | goto exit; | |
1247 | } | |
1248 | ||
1249 | skb_pull(resp, sizeof(struct port100_tg_comm_rf_res)); | |
1250 | ||
1251 | if (status != PORT100_CMD_STATUS_OK) { | |
1252 | kfree_skb(resp); | |
1253 | ||
1254 | if (status == PORT100_CMD_STATUS_TIMEOUT) | |
1255 | resp = ERR_PTR(-ETIMEDOUT); | |
1256 | else | |
1257 | resp = ERR_PTR(-EIO); | |
1258 | } | |
1259 | ||
1260 | exit: | |
1261 | cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); | |
1262 | ||
1263 | kfree(cb_arg); | |
562d4d59 TE |
1264 | } |
1265 | ||
1266 | static int port100_tg_send_cmd(struct nfc_digital_dev *ddev, | |
1267 | struct sk_buff *skb, u16 timeout, | |
1268 | nfc_digital_cmd_complete_t cb, void *arg) | |
1269 | { | |
7227c021 TE |
1270 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1271 | struct port100_tg_comm_rf_cmd *hdr; | |
1272 | struct port100_cb_arg *cb_arg; | |
1273 | ||
1274 | cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); | |
1275 | if (!cb_arg) | |
1276 | return -ENOMEM; | |
1277 | ||
1278 | cb_arg->complete_cb = cb; | |
1279 | cb_arg->complete_arg = arg; | |
1280 | ||
1281 | skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); | |
1282 | ||
1283 | hdr = (struct port100_tg_comm_rf_cmd *)skb->data; | |
1284 | ||
1285 | memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); | |
1286 | hdr->guard_time = cpu_to_le16(500); | |
1287 | hdr->send_timeout = cpu_to_le16(0xFFFF); | |
1288 | hdr->recv_timeout = cpu_to_le16(timeout); | |
1289 | ||
1290 | return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, | |
1291 | port100_tg_comm_rf_complete, cb_arg); | |
562d4d59 TE |
1292 | } |
1293 | ||
1294 | static int port100_listen_mdaa(struct nfc_digital_dev *ddev, | |
1295 | struct digital_tg_mdaa_params *params, | |
1296 | u16 timeout, | |
1297 | nfc_digital_cmd_complete_t cb, void *arg) | |
1298 | { | |
7227c021 TE |
1299 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1300 | struct port100_tg_comm_rf_cmd *hdr; | |
1301 | struct port100_cb_arg *cb_arg; | |
1302 | struct sk_buff *skb; | |
1303 | int rc; | |
1304 | ||
1305 | rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, | |
1306 | NFC_DIGITAL_RF_TECH_106A); | |
1307 | if (rc) | |
1308 | return rc; | |
1309 | ||
1310 | rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
1311 | NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); | |
1312 | if (rc) | |
1313 | return rc; | |
1314 | ||
1315 | cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); | |
1316 | if (!cb_arg) | |
1317 | return -ENOMEM; | |
1318 | ||
1319 | cb_arg->complete_cb = cb; | |
1320 | cb_arg->complete_arg = arg; | |
1321 | cb_arg->mdaa = 1; | |
1322 | ||
1323 | skb = port100_alloc_skb(dev, 0); | |
1324 | if (!skb) { | |
1325 | kfree(cb_arg); | |
1326 | return -ENOMEM; | |
1327 | } | |
1328 | ||
1329 | skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); | |
1330 | hdr = (struct port100_tg_comm_rf_cmd *)skb->data; | |
1331 | ||
1332 | memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); | |
1333 | ||
1334 | hdr->guard_time = 0; | |
1335 | hdr->send_timeout = cpu_to_le16(0xFFFF); | |
1336 | hdr->mdaa = 1; | |
1337 | hdr->nfca_param[0] = (params->sens_res >> 8) & 0xFF; | |
1338 | hdr->nfca_param[1] = params->sens_res & 0xFF; | |
1339 | memcpy(hdr->nfca_param + 2, params->nfcid1, 3); | |
1340 | hdr->nfca_param[5] = params->sel_res; | |
1341 | memcpy(hdr->nfcf_param, params->nfcid2, 8); | |
1342 | hdr->nfcf_param[16] = (params->sc >> 8) & 0xFF; | |
1343 | hdr->nfcf_param[17] = params->sc & 0xFF; | |
1344 | hdr->recv_timeout = cpu_to_le16(timeout); | |
1345 | ||
1346 | return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, | |
1347 | port100_tg_comm_rf_complete, cb_arg); | |
562d4d59 TE |
1348 | } |
1349 | ||
1350 | static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout, | |
1351 | nfc_digital_cmd_complete_t cb, void *arg) | |
1352 | { | |
7227c021 TE |
1353 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1354 | struct sk_buff *skb; | |
1355 | ||
1356 | skb = port100_alloc_skb(dev, 0); | |
1357 | if (!skb) | |
1358 | return -ENOMEM; | |
1359 | ||
1360 | return port100_tg_send_cmd(ddev, skb, timeout, cb, arg); | |
562d4d59 TE |
1361 | } |
1362 | ||
1363 | static struct nfc_digital_ops port100_digital_ops = { | |
1364 | .in_configure_hw = port100_in_configure_hw, | |
1365 | .in_send_cmd = port100_in_send_cmd, | |
1366 | ||
1367 | .tg_listen_mdaa = port100_listen_mdaa, | |
1368 | .tg_listen = port100_listen, | |
1369 | .tg_configure_hw = port100_tg_configure_hw, | |
1370 | .tg_send_cmd = port100_tg_send_cmd, | |
1371 | ||
1372 | .switch_rf = port100_switch_rf, | |
1373 | .abort_cmd = port100_abort_cmd, | |
1374 | }; | |
1375 | ||
1376 | static const struct usb_device_id port100_table[] = { | |
4aa7ed02 | 1377 | { USB_DEVICE(SONY_VENDOR_ID, RCS380_PRODUCT_ID), }, |
562d4d59 TE |
1378 | { } |
1379 | }; | |
1380 | MODULE_DEVICE_TABLE(usb, port100_table); | |
1381 | ||
1382 | static int port100_probe(struct usb_interface *interface, | |
1383 | const struct usb_device_id *id) | |
1384 | { | |
1385 | struct port100 *dev; | |
1386 | int rc; | |
0347a6ab TE |
1387 | struct usb_host_interface *iface_desc; |
1388 | struct usb_endpoint_descriptor *endpoint; | |
1389 | int in_endpoint; | |
1390 | int out_endpoint; | |
1391 | u16 fw_version; | |
1392 | u64 cmd_type_mask; | |
1393 | int i; | |
562d4d59 TE |
1394 | |
1395 | dev = devm_kzalloc(&interface->dev, sizeof(struct port100), GFP_KERNEL); | |
1396 | if (!dev) | |
1397 | return -ENOMEM; | |
1398 | ||
1399 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
1400 | dev->interface = interface; | |
1401 | usb_set_intfdata(interface, dev); | |
1402 | ||
0347a6ab TE |
1403 | in_endpoint = out_endpoint = 0; |
1404 | iface_desc = interface->cur_altsetting; | |
1405 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
1406 | endpoint = &iface_desc->endpoint[i].desc; | |
1407 | ||
1408 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) | |
1409 | in_endpoint = endpoint->bEndpointAddress; | |
1410 | ||
1411 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) | |
1412 | out_endpoint = endpoint->bEndpointAddress; | |
1413 | } | |
1414 | ||
1415 | if (!in_endpoint || !out_endpoint) { | |
1416 | nfc_err(&interface->dev, | |
1417 | "Could not find bulk-in or bulk-out endpoint\n"); | |
1418 | rc = -ENODEV; | |
1419 | goto error; | |
1420 | } | |
1421 | ||
1422 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1423 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1424 | ||
1425 | if (!dev->in_urb || !dev->out_urb) { | |
1426 | nfc_err(&interface->dev, "Could not allocate USB URBs\n"); | |
1427 | rc = -ENOMEM; | |
1428 | goto error; | |
1429 | } | |
1430 | ||
1431 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
1432 | usb_rcvbulkpipe(dev->udev, in_endpoint), | |
1433 | NULL, 0, NULL, dev); | |
1434 | usb_fill_bulk_urb(dev->out_urb, dev->udev, | |
1435 | usb_sndbulkpipe(dev->udev, out_endpoint), | |
1436 | NULL, 0, port100_send_complete, dev); | |
1437 | ||
1438 | dev->skb_headroom = PORT100_FRAME_HEADER_LEN + | |
1439 | PORT100_COMM_RF_HEAD_MAX_LEN; | |
1440 | dev->skb_tailroom = PORT100_FRAME_TAIL_LEN; | |
1441 | ||
1442 | INIT_WORK(&dev->cmd_complete_work, port100_wq_cmd_complete); | |
1443 | ||
1444 | /* The first thing to do with the Port-100 is to set the command type | |
1445 | * to be used. If supported we use command type 1. 0 otherwise. | |
1446 | */ | |
1447 | cmd_type_mask = port100_get_command_type_mask(dev); | |
1448 | if (!cmd_type_mask) { | |
1449 | nfc_err(&interface->dev, | |
1450 | "Could not get supported command types.\n"); | |
1451 | rc = -ENODEV; | |
1452 | goto error; | |
1453 | } | |
1454 | ||
1455 | if (PORT100_CMD_TYPE_IS_SUPPORTED(cmd_type_mask, PORT100_CMD_TYPE_1)) | |
1456 | dev->cmd_type = PORT100_CMD_TYPE_1; | |
1457 | else | |
1458 | dev->cmd_type = PORT100_CMD_TYPE_0; | |
1459 | ||
1460 | rc = port100_set_command_type(dev, dev->cmd_type); | |
1461 | if (rc) { | |
1462 | nfc_err(&interface->dev, | |
1463 | "The device does not support command type %u.\n", | |
1464 | dev->cmd_type); | |
1465 | goto error; | |
1466 | } | |
1467 | ||
1468 | fw_version = port100_get_firmware_version(dev); | |
1469 | if (!fw_version) | |
1470 | nfc_err(&interface->dev, | |
1471 | "Could not get device firmware version.\n"); | |
1472 | ||
1473 | nfc_info(&interface->dev, | |
1474 | "Sony NFC Port-100 Series attached (firmware v%x.%02x)\n", | |
1475 | (fw_version & 0xFF00) >> 8, fw_version & 0xFF); | |
562d4d59 TE |
1476 | |
1477 | dev->nfc_digital_dev = nfc_digital_allocate_device(&port100_digital_ops, | |
1478 | PORT100_PROTOCOLS, | |
1479 | PORT100_CAPABILITIES, | |
1480 | dev->skb_headroom, | |
1481 | dev->skb_tailroom); | |
1482 | if (!dev->nfc_digital_dev) { | |
1483 | nfc_err(&interface->dev, | |
1484 | "Could not allocate nfc_digital_dev.\n"); | |
1485 | rc = -ENOMEM; | |
1486 | goto error; | |
1487 | } | |
1488 | ||
1489 | nfc_digital_set_parent_dev(dev->nfc_digital_dev, &interface->dev); | |
1490 | nfc_digital_set_drvdata(dev->nfc_digital_dev, dev); | |
1491 | ||
1492 | rc = nfc_digital_register_device(dev->nfc_digital_dev); | |
1493 | if (rc) { | |
1494 | nfc_err(&interface->dev, | |
1495 | "Could not register digital device.\n"); | |
1496 | goto free_nfc_dev; | |
1497 | } | |
1498 | ||
1499 | return 0; | |
1500 | ||
1501 | free_nfc_dev: | |
1502 | nfc_digital_free_device(dev->nfc_digital_dev); | |
1503 | ||
1504 | error: | |
0347a6ab TE |
1505 | usb_free_urb(dev->in_urb); |
1506 | usb_free_urb(dev->out_urb); | |
1507 | usb_put_dev(dev->udev); | |
1508 | ||
562d4d59 TE |
1509 | return rc; |
1510 | } | |
1511 | ||
1512 | static void port100_disconnect(struct usb_interface *interface) | |
1513 | { | |
1514 | struct port100 *dev; | |
1515 | ||
1516 | dev = usb_get_intfdata(interface); | |
1517 | usb_set_intfdata(interface, NULL); | |
1518 | ||
1519 | nfc_digital_unregister_device(dev->nfc_digital_dev); | |
1520 | nfc_digital_free_device(dev->nfc_digital_dev); | |
1521 | ||
0347a6ab TE |
1522 | usb_kill_urb(dev->in_urb); |
1523 | usb_kill_urb(dev->out_urb); | |
1524 | ||
1525 | usb_free_urb(dev->in_urb); | |
1526 | usb_free_urb(dev->out_urb); | |
c36aeba8 | 1527 | usb_put_dev(dev->udev); |
0347a6ab TE |
1528 | |
1529 | kfree(dev->cmd); | |
1530 | ||
562d4d59 TE |
1531 | nfc_info(&interface->dev, "Sony Port-100 NFC device disconnected"); |
1532 | } | |
1533 | ||
1534 | static struct usb_driver port100_driver = { | |
1535 | .name = "port100", | |
1536 | .probe = port100_probe, | |
1537 | .disconnect = port100_disconnect, | |
1538 | .id_table = port100_table, | |
1539 | }; | |
1540 | ||
1541 | module_usb_driver(port100_driver); | |
1542 | ||
1543 | MODULE_DESCRIPTION("NFC Port-100 series usb driver ver " VERSION); | |
1544 | MODULE_VERSION(VERSION); | |
1545 | MODULE_LICENSE("GPL"); |