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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 | 30 | NFC_PROTO_NFC_DEP_MASK | \ |
09592ccf TE |
31 | NFC_PROTO_ISO14443_MASK | \ |
32 | NFC_PROTO_ISO14443_B_MASK) | |
562d4d59 TE |
33 | |
34 | #define PORT100_CAPABILITIES (NFC_DIGITAL_DRV_CAPS_IN_CRC | \ | |
35 | NFC_DIGITAL_DRV_CAPS_TG_CRC) | |
36 | ||
0347a6ab TE |
37 | /* Standard port100 frame definitions */ |
38 | #define PORT100_FRAME_HEADER_LEN (sizeof(struct port100_frame) \ | |
39 | + 2) /* data[0] CC, data[1] SCC */ | |
40 | #define PORT100_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ | |
41 | ||
42 | #define PORT100_COMM_RF_HEAD_MAX_LEN (sizeof(struct port100_tg_comm_rf_cmd)) | |
43 | ||
44 | /* | |
45 | * Max extended frame payload len, excluding CC and SCC | |
46 | * which are already in PORT100_FRAME_HEADER_LEN. | |
47 | */ | |
48 | #define PORT100_FRAME_MAX_PAYLOAD_LEN 1001 | |
49 | ||
50 | #define PORT100_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2), | |
51 | Postamble (1) */ | |
52 | static u8 ack_frame[PORT100_FRAME_ACK_SIZE] = { | |
53 | 0x00, 0x00, 0xff, 0x00, 0xff, 0x00 | |
54 | }; | |
55 | ||
56 | #define PORT100_FRAME_CHECKSUM(f) (f->data[le16_to_cpu(f->datalen)]) | |
57 | #define PORT100_FRAME_POSTAMBLE(f) (f->data[le16_to_cpu(f->datalen) + 1]) | |
58 | ||
59 | /* start of frame */ | |
60 | #define PORT100_FRAME_SOF 0x00FF | |
61 | #define PORT100_FRAME_EXT 0xFFFF | |
62 | #define PORT100_FRAME_ACK 0x00FF | |
63 | ||
64 | /* Port-100 command: in or out */ | |
65 | #define PORT100_FRAME_DIRECTION(f) (f->data[0]) /* CC */ | |
66 | #define PORT100_FRAME_DIR_OUT 0xD6 | |
67 | #define PORT100_FRAME_DIR_IN 0xD7 | |
68 | ||
69 | /* Port-100 sub-command */ | |
70 | #define PORT100_FRAME_CMD(f) (f->data[1]) /* SCC */ | |
71 | ||
72 | #define PORT100_CMD_GET_FIRMWARE_VERSION 0x20 | |
73 | #define PORT100_CMD_GET_COMMAND_TYPE 0x28 | |
74 | #define PORT100_CMD_SET_COMMAND_TYPE 0x2A | |
75 | ||
9f7b57f2 TE |
76 | #define PORT100_CMD_IN_SET_RF 0x00 |
77 | #define PORT100_CMD_IN_SET_PROTOCOL 0x02 | |
78 | #define PORT100_CMD_IN_COMM_RF 0x04 | |
79 | ||
7227c021 TE |
80 | #define PORT100_CMD_TG_SET_RF 0x40 |
81 | #define PORT100_CMD_TG_SET_PROTOCOL 0x42 | |
82 | #define PORT100_CMD_TG_SET_RF_OFF 0x46 | |
83 | #define PORT100_CMD_TG_COMM_RF 0x48 | |
84 | ||
9f7b57f2 TE |
85 | #define PORT100_CMD_SWITCH_RF 0x06 |
86 | ||
0347a6ab TE |
87 | #define PORT100_CMD_RESPONSE(cmd) (cmd + 1) |
88 | ||
89 | #define PORT100_CMD_TYPE_IS_SUPPORTED(mask, cmd_type) \ | |
90 | ((mask) & (0x01 << (cmd_type))) | |
91 | #define PORT100_CMD_TYPE_0 0 | |
92 | #define PORT100_CMD_TYPE_1 1 | |
93 | ||
9f7b57f2 TE |
94 | #define PORT100_CMD_STATUS_OK 0x00 |
95 | #define PORT100_CMD_STATUS_TIMEOUT 0x80 | |
96 | ||
7227c021 TE |
97 | #define PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK 0x01 |
98 | #define PORT100_MDAA_TGT_WAS_ACTIVATED_MASK 0x02 | |
99 | ||
0347a6ab TE |
100 | struct port100; |
101 | ||
102 | typedef void (*port100_send_async_complete_t)(struct port100 *dev, void *arg, | |
103 | struct sk_buff *resp); | |
104 | ||
9f7b57f2 TE |
105 | /** |
106 | * Setting sets structure for in_set_rf command | |
107 | * | |
108 | * @in_*_set_number: Represent the entry indexes in the port-100 RF Base Table. | |
109 | * This table contains multiple RF setting sets required for RF | |
110 | * communication. | |
111 | * | |
112 | * @in_*_comm_type: Theses fields set the communication type to be used. | |
113 | */ | |
114 | struct port100_in_rf_setting { | |
115 | u8 in_send_set_number; | |
116 | u8 in_send_comm_type; | |
117 | u8 in_recv_set_number; | |
118 | u8 in_recv_comm_type; | |
119 | } __packed; | |
120 | ||
121 | #define PORT100_COMM_TYPE_IN_212F 0x01 | |
122 | #define PORT100_COMM_TYPE_IN_424F 0x02 | |
123 | #define PORT100_COMM_TYPE_IN_106A 0x03 | |
09592ccf | 124 | #define PORT100_COMM_TYPE_IN_106B 0x07 |
9f7b57f2 TE |
125 | |
126 | static const struct port100_in_rf_setting in_rf_settings[] = { | |
127 | [NFC_DIGITAL_RF_TECH_212F] = { | |
128 | .in_send_set_number = 1, | |
129 | .in_send_comm_type = PORT100_COMM_TYPE_IN_212F, | |
130 | .in_recv_set_number = 15, | |
131 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_212F, | |
132 | }, | |
133 | [NFC_DIGITAL_RF_TECH_424F] = { | |
134 | .in_send_set_number = 1, | |
135 | .in_send_comm_type = PORT100_COMM_TYPE_IN_424F, | |
136 | .in_recv_set_number = 15, | |
137 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_424F, | |
138 | }, | |
139 | [NFC_DIGITAL_RF_TECH_106A] = { | |
140 | .in_send_set_number = 2, | |
141 | .in_send_comm_type = PORT100_COMM_TYPE_IN_106A, | |
142 | .in_recv_set_number = 15, | |
143 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_106A, | |
144 | }, | |
09592ccf TE |
145 | [NFC_DIGITAL_RF_TECH_106B] = { |
146 | .in_send_set_number = 3, | |
147 | .in_send_comm_type = PORT100_COMM_TYPE_IN_106B, | |
148 | .in_recv_set_number = 15, | |
149 | .in_recv_comm_type = PORT100_COMM_TYPE_IN_106B, | |
150 | }, | |
d3815ea9 TE |
151 | /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ |
152 | [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, | |
9f7b57f2 TE |
153 | }; |
154 | ||
7227c021 TE |
155 | /** |
156 | * Setting sets structure for tg_set_rf command | |
157 | * | |
158 | * @tg_set_number: Represents the entry index in the port-100 RF Base Table. | |
159 | * This table contains multiple RF setting sets required for RF | |
160 | * communication. this field is used for both send and receive | |
161 | * settings. | |
162 | * | |
163 | * @tg_comm_type: Sets the communication type to be used to send and receive | |
164 | * data. | |
165 | */ | |
166 | struct port100_tg_rf_setting { | |
167 | u8 tg_set_number; | |
168 | u8 tg_comm_type; | |
169 | } __packed; | |
170 | ||
171 | #define PORT100_COMM_TYPE_TG_106A 0x0B | |
172 | #define PORT100_COMM_TYPE_TG_212F 0x0C | |
173 | #define PORT100_COMM_TYPE_TG_424F 0x0D | |
174 | ||
175 | static const struct port100_tg_rf_setting tg_rf_settings[] = { | |
176 | [NFC_DIGITAL_RF_TECH_106A] = { | |
177 | .tg_set_number = 8, | |
178 | .tg_comm_type = PORT100_COMM_TYPE_TG_106A, | |
179 | }, | |
180 | [NFC_DIGITAL_RF_TECH_212F] = { | |
181 | .tg_set_number = 8, | |
182 | .tg_comm_type = PORT100_COMM_TYPE_TG_212F, | |
183 | }, | |
184 | [NFC_DIGITAL_RF_TECH_424F] = { | |
185 | .tg_set_number = 8, | |
186 | .tg_comm_type = PORT100_COMM_TYPE_TG_424F, | |
187 | }, | |
d3815ea9 TE |
188 | /* Ensures the array has NFC_DIGITAL_RF_TECH_LAST elements */ |
189 | [NFC_DIGITAL_RF_TECH_LAST] = { 0 }, | |
190 | ||
7227c021 TE |
191 | }; |
192 | ||
9f7b57f2 TE |
193 | #define PORT100_IN_PROT_INITIAL_GUARD_TIME 0x00 |
194 | #define PORT100_IN_PROT_ADD_CRC 0x01 | |
195 | #define PORT100_IN_PROT_CHECK_CRC 0x02 | |
196 | #define PORT100_IN_PROT_MULTI_CARD 0x03 | |
197 | #define PORT100_IN_PROT_ADD_PARITY 0x04 | |
198 | #define PORT100_IN_PROT_CHECK_PARITY 0x05 | |
199 | #define PORT100_IN_PROT_BITWISE_AC_RECV_MODE 0x06 | |
200 | #define PORT100_IN_PROT_VALID_BIT_NUMBER 0x07 | |
201 | #define PORT100_IN_PROT_CRYPTO1 0x08 | |
202 | #define PORT100_IN_PROT_ADD_SOF 0x09 | |
203 | #define PORT100_IN_PROT_CHECK_SOF 0x0A | |
204 | #define PORT100_IN_PROT_ADD_EOF 0x0B | |
205 | #define PORT100_IN_PROT_CHECK_EOF 0x0C | |
206 | #define PORT100_IN_PROT_DEAF_TIME 0x0E | |
207 | #define PORT100_IN_PROT_CRM 0x0F | |
208 | #define PORT100_IN_PROT_CRM_MIN_LEN 0x10 | |
209 | #define PORT100_IN_PROT_T1_TAG_FRAME 0x11 | |
210 | #define PORT100_IN_PROT_RFCA 0x12 | |
211 | #define PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR 0x13 | |
212 | #define PORT100_IN_PROT_END 0x14 | |
213 | ||
214 | #define PORT100_IN_MAX_NUM_PROTOCOLS 19 | |
215 | ||
7227c021 TE |
216 | #define PORT100_TG_PROT_TU 0x00 |
217 | #define PORT100_TG_PROT_RF_OFF 0x01 | |
218 | #define PORT100_TG_PROT_CRM 0x02 | |
219 | #define PORT100_TG_PROT_END 0x03 | |
220 | ||
221 | #define PORT100_TG_MAX_NUM_PROTOCOLS 3 | |
222 | ||
9f7b57f2 TE |
223 | struct port100_protocol { |
224 | u8 number; | |
225 | u8 value; | |
226 | } __packed; | |
227 | ||
228 | static struct port100_protocol | |
229 | in_protocols[][PORT100_IN_MAX_NUM_PROTOCOLS + 1] = { | |
230 | [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { | |
231 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, | |
232 | { PORT100_IN_PROT_ADD_CRC, 0 }, | |
233 | { PORT100_IN_PROT_CHECK_CRC, 0 }, | |
234 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
235 | { PORT100_IN_PROT_ADD_PARITY, 0 }, | |
236 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, | |
237 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
238 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 7 }, | |
239 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
240 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
241 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
242 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
243 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
244 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
245 | { PORT100_IN_PROT_CRM, 0 }, | |
246 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
247 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
248 | { PORT100_IN_PROT_RFCA, 0 }, | |
249 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
250 | { PORT100_IN_PROT_END, 0 }, | |
251 | }, | |
252 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { | |
253 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, | |
254 | { PORT100_IN_PROT_ADD_CRC, 0 }, | |
255 | { PORT100_IN_PROT_CHECK_CRC, 0 }, | |
256 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
257 | { PORT100_IN_PROT_ADD_PARITY, 1 }, | |
258 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, | |
259 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
260 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
261 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
262 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
263 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
264 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
265 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
266 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
267 | { PORT100_IN_PROT_CRM, 0 }, | |
268 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
269 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
270 | { PORT100_IN_PROT_RFCA, 0 }, | |
271 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
272 | { PORT100_IN_PROT_END, 0 }, | |
273 | }, | |
274 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { | |
275 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 6 }, | |
276 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
277 | { PORT100_IN_PROT_CHECK_CRC, 1 }, | |
278 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
279 | { PORT100_IN_PROT_ADD_PARITY, 1 }, | |
280 | { PORT100_IN_PROT_CHECK_PARITY, 1 }, | |
281 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
282 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
283 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
284 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
285 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
286 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
287 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
288 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
289 | { PORT100_IN_PROT_CRM, 0 }, | |
290 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
291 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
292 | { PORT100_IN_PROT_RFCA, 0 }, | |
293 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
294 | { PORT100_IN_PROT_END, 0 }, | |
295 | }, | |
296 | [NFC_DIGITAL_FRAMING_NFCA_T1T] = { | |
297 | /* nfc_digital_framing_nfca_short */ | |
298 | { PORT100_IN_PROT_ADD_CRC, 2 }, | |
299 | { PORT100_IN_PROT_CHECK_CRC, 2 }, | |
300 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
301 | { PORT100_IN_PROT_T1_TAG_FRAME, 2 }, | |
302 | { PORT100_IN_PROT_END, 0 }, | |
303 | }, | |
304 | [NFC_DIGITAL_FRAMING_NFCA_T2T] = { | |
305 | /* nfc_digital_framing_nfca_standard */ | |
306 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
307 | { PORT100_IN_PROT_CHECK_CRC, 0 }, | |
308 | { PORT100_IN_PROT_END, 0 }, | |
309 | }, | |
2a26f9a2 TE |
310 | [NFC_DIGITAL_FRAMING_NFCA_T4T] = { |
311 | /* nfc_digital_framing_nfca_standard_with_crc_a */ | |
312 | { PORT100_IN_PROT_END, 0 }, | |
313 | }, | |
9f7b57f2 TE |
314 | [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { |
315 | /* nfc_digital_framing_nfca_standard */ | |
316 | { PORT100_IN_PROT_END, 0 }, | |
317 | }, | |
318 | [NFC_DIGITAL_FRAMING_NFCF] = { | |
319 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 }, | |
320 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
321 | { PORT100_IN_PROT_CHECK_CRC, 1 }, | |
322 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
323 | { PORT100_IN_PROT_ADD_PARITY, 0 }, | |
324 | { PORT100_IN_PROT_CHECK_PARITY, 0 }, | |
325 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
326 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
327 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
328 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
329 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
330 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
331 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
332 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
333 | { PORT100_IN_PROT_CRM, 0 }, | |
334 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
335 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
336 | { PORT100_IN_PROT_RFCA, 0 }, | |
337 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
338 | { PORT100_IN_PROT_END, 0 }, | |
339 | }, | |
340 | [NFC_DIGITAL_FRAMING_NFCF_T3T] = { | |
341 | /* nfc_digital_framing_nfcf */ | |
342 | { PORT100_IN_PROT_END, 0 }, | |
343 | }, | |
344 | [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { | |
345 | /* nfc_digital_framing_nfcf */ | |
a81ba50a TE |
346 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 18 }, |
347 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
348 | { PORT100_IN_PROT_CHECK_CRC, 1 }, | |
349 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
350 | { PORT100_IN_PROT_ADD_PARITY, 0 }, | |
351 | { PORT100_IN_PROT_CHECK_PARITY, 0 }, | |
352 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
353 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
354 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
355 | { PORT100_IN_PROT_ADD_SOF, 0 }, | |
356 | { PORT100_IN_PROT_CHECK_SOF, 0 }, | |
357 | { PORT100_IN_PROT_ADD_EOF, 0 }, | |
358 | { PORT100_IN_PROT_CHECK_EOF, 0 }, | |
359 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
360 | { PORT100_IN_PROT_CRM, 0 }, | |
361 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
362 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
363 | { PORT100_IN_PROT_RFCA, 0 }, | |
364 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
365 | { PORT100_IN_PROT_END, 0 }, | |
9f7b57f2 TE |
366 | }, |
367 | [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { | |
368 | { PORT100_IN_PROT_END, 0 }, | |
369 | }, | |
09592ccf TE |
370 | [NFC_DIGITAL_FRAMING_NFCB] = { |
371 | { PORT100_IN_PROT_INITIAL_GUARD_TIME, 20 }, | |
372 | { PORT100_IN_PROT_ADD_CRC, 1 }, | |
373 | { PORT100_IN_PROT_CHECK_CRC, 1 }, | |
374 | { PORT100_IN_PROT_MULTI_CARD, 0 }, | |
375 | { PORT100_IN_PROT_ADD_PARITY, 0 }, | |
376 | { PORT100_IN_PROT_CHECK_PARITY, 0 }, | |
377 | { PORT100_IN_PROT_BITWISE_AC_RECV_MODE, 0 }, | |
378 | { PORT100_IN_PROT_VALID_BIT_NUMBER, 8 }, | |
379 | { PORT100_IN_PROT_CRYPTO1, 0 }, | |
380 | { PORT100_IN_PROT_ADD_SOF, 1 }, | |
381 | { PORT100_IN_PROT_CHECK_SOF, 1 }, | |
382 | { PORT100_IN_PROT_ADD_EOF, 1 }, | |
383 | { PORT100_IN_PROT_CHECK_EOF, 1 }, | |
384 | { PORT100_IN_PROT_DEAF_TIME, 4 }, | |
385 | { PORT100_IN_PROT_CRM, 0 }, | |
386 | { PORT100_IN_PROT_CRM_MIN_LEN, 0 }, | |
387 | { PORT100_IN_PROT_T1_TAG_FRAME, 0 }, | |
388 | { PORT100_IN_PROT_RFCA, 0 }, | |
389 | { PORT100_IN_PROT_GUARD_TIME_AT_INITIATOR, 6 }, | |
390 | { PORT100_IN_PROT_END, 0 }, | |
391 | }, | |
392 | [NFC_DIGITAL_FRAMING_NFCB_T4T] = { | |
393 | /* nfc_digital_framing_nfcb */ | |
394 | { PORT100_IN_PROT_END, 0 }, | |
395 | }, | |
d3815ea9 TE |
396 | /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ |
397 | [NFC_DIGITAL_FRAMING_LAST] = { | |
398 | { PORT100_IN_PROT_END, 0 }, | |
399 | }, | |
9f7b57f2 TE |
400 | }; |
401 | ||
7227c021 TE |
402 | static struct port100_protocol |
403 | tg_protocols[][PORT100_TG_MAX_NUM_PROTOCOLS + 1] = { | |
404 | [NFC_DIGITAL_FRAMING_NFCA_SHORT] = { | |
405 | { PORT100_TG_PROT_END, 0 }, | |
406 | }, | |
407 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD] = { | |
408 | { PORT100_TG_PROT_END, 0 }, | |
409 | }, | |
410 | [NFC_DIGITAL_FRAMING_NFCA_STANDARD_WITH_CRC_A] = { | |
411 | { PORT100_TG_PROT_END, 0 }, | |
412 | }, | |
413 | [NFC_DIGITAL_FRAMING_NFCA_T1T] = { | |
414 | { PORT100_TG_PROT_END, 0 }, | |
415 | }, | |
416 | [NFC_DIGITAL_FRAMING_NFCA_T2T] = { | |
417 | { PORT100_TG_PROT_END, 0 }, | |
418 | }, | |
419 | [NFC_DIGITAL_FRAMING_NFCA_NFC_DEP] = { | |
420 | { PORT100_TG_PROT_TU, 1 }, | |
421 | { PORT100_TG_PROT_RF_OFF, 0 }, | |
422 | { PORT100_TG_PROT_CRM, 7 }, | |
423 | { PORT100_TG_PROT_END, 0 }, | |
424 | }, | |
425 | [NFC_DIGITAL_FRAMING_NFCF] = { | |
426 | { PORT100_TG_PROT_END, 0 }, | |
427 | }, | |
428 | [NFC_DIGITAL_FRAMING_NFCF_T3T] = { | |
429 | { PORT100_TG_PROT_END, 0 }, | |
430 | }, | |
431 | [NFC_DIGITAL_FRAMING_NFCF_NFC_DEP] = { | |
432 | { PORT100_TG_PROT_TU, 1 }, | |
433 | { PORT100_TG_PROT_RF_OFF, 0 }, | |
434 | { PORT100_TG_PROT_CRM, 7 }, | |
435 | { PORT100_TG_PROT_END, 0 }, | |
436 | }, | |
437 | [NFC_DIGITAL_FRAMING_NFC_DEP_ACTIVATED] = { | |
438 | { PORT100_TG_PROT_RF_OFF, 1 }, | |
439 | { PORT100_TG_PROT_END, 0 }, | |
440 | }, | |
d3815ea9 TE |
441 | /* Ensures the array has NFC_DIGITAL_FRAMING_LAST elements */ |
442 | [NFC_DIGITAL_FRAMING_LAST] = { | |
443 | { PORT100_TG_PROT_END, 0 }, | |
444 | }, | |
7227c021 TE |
445 | }; |
446 | ||
562d4d59 TE |
447 | struct port100 { |
448 | struct nfc_digital_dev *nfc_digital_dev; | |
449 | ||
450 | int skb_headroom; | |
451 | int skb_tailroom; | |
452 | ||
453 | struct usb_device *udev; | |
454 | struct usb_interface *interface; | |
0347a6ab TE |
455 | |
456 | struct urb *out_urb; | |
457 | struct urb *in_urb; | |
458 | ||
b74584c1 TE |
459 | /* This mutex protects the out_urb and avoids to submit a new command |
460 | * through port100_send_frame_async() while the previous one is being | |
461 | * canceled through port100_abort_cmd(). | |
462 | */ | |
463 | struct mutex out_urb_lock; | |
464 | ||
0347a6ab TE |
465 | struct work_struct cmd_complete_work; |
466 | ||
467 | u8 cmd_type; | |
468 | ||
469 | /* The digital stack serializes commands to be sent. There is no need | |
470 | * for any queuing/locking mechanism at driver level. | |
471 | */ | |
472 | struct port100_cmd *cmd; | |
b74584c1 TE |
473 | |
474 | bool cmd_cancel; | |
a52bd7d2 | 475 | struct completion cmd_cancel_done; |
0347a6ab TE |
476 | }; |
477 | ||
478 | struct port100_cmd { | |
479 | u8 code; | |
480 | int status; | |
481 | struct sk_buff *req; | |
482 | struct sk_buff *resp; | |
483 | int resp_len; | |
484 | port100_send_async_complete_t complete_cb; | |
485 | void *complete_cb_context; | |
486 | }; | |
487 | ||
488 | struct port100_frame { | |
489 | u8 preamble; | |
490 | __be16 start_frame; | |
491 | __be16 extended_frame; | |
492 | __le16 datalen; | |
493 | u8 datalen_checksum; | |
494 | u8 data[]; | |
495 | } __packed; | |
496 | ||
497 | struct port100_ack_frame { | |
498 | u8 preamble; | |
499 | __be16 start_frame; | |
500 | __be16 ack_frame; | |
501 | u8 postambule; | |
502 | } __packed; | |
503 | ||
504 | struct port100_cb_arg { | |
505 | nfc_digital_cmd_complete_t complete_cb; | |
506 | void *complete_arg; | |
507 | u8 mdaa; | |
562d4d59 TE |
508 | }; |
509 | ||
0347a6ab TE |
510 | struct port100_tg_comm_rf_cmd { |
511 | __le16 guard_time; | |
512 | __le16 send_timeout; | |
513 | u8 mdaa; | |
514 | u8 nfca_param[6]; | |
515 | u8 nfcf_param[18]; | |
516 | u8 mf_halted; | |
517 | u8 arae_flag; | |
518 | __le16 recv_timeout; | |
519 | u8 data[]; | |
520 | } __packed; | |
521 | ||
7227c021 TE |
522 | struct port100_tg_comm_rf_res { |
523 | u8 comm_type; | |
524 | u8 ar_status; | |
525 | u8 target_activated; | |
526 | __le32 status; | |
527 | u8 data[]; | |
528 | } __packed; | |
529 | ||
0347a6ab TE |
530 | /* The rule: value + checksum = 0 */ |
531 | static inline u8 port100_checksum(u16 value) | |
532 | { | |
533 | return ~(((u8 *)&value)[0] + ((u8 *)&value)[1]) + 1; | |
534 | } | |
535 | ||
536 | /* The rule: sum(data elements) + checksum = 0 */ | |
537 | static u8 port100_data_checksum(u8 *data, int datalen) | |
538 | { | |
539 | u8 sum = 0; | |
540 | int i; | |
541 | ||
542 | for (i = 0; i < datalen; i++) | |
543 | sum += data[i]; | |
544 | ||
545 | return port100_checksum(sum); | |
546 | } | |
547 | ||
548 | static void port100_tx_frame_init(void *_frame, u8 cmd_code) | |
549 | { | |
550 | struct port100_frame *frame = _frame; | |
551 | ||
552 | frame->preamble = 0; | |
553 | frame->start_frame = cpu_to_be16(PORT100_FRAME_SOF); | |
554 | frame->extended_frame = cpu_to_be16(PORT100_FRAME_EXT); | |
555 | PORT100_FRAME_DIRECTION(frame) = PORT100_FRAME_DIR_OUT; | |
556 | PORT100_FRAME_CMD(frame) = cmd_code; | |
557 | frame->datalen = cpu_to_le16(2); | |
558 | } | |
559 | ||
560 | static void port100_tx_frame_finish(void *_frame) | |
561 | { | |
562 | struct port100_frame *frame = _frame; | |
563 | ||
564 | frame->datalen_checksum = port100_checksum(le16_to_cpu(frame->datalen)); | |
565 | ||
566 | PORT100_FRAME_CHECKSUM(frame) = | |
567 | port100_data_checksum(frame->data, le16_to_cpu(frame->datalen)); | |
568 | ||
569 | PORT100_FRAME_POSTAMBLE(frame) = 0; | |
570 | } | |
571 | ||
572 | static void port100_tx_update_payload_len(void *_frame, int len) | |
573 | { | |
574 | struct port100_frame *frame = _frame; | |
575 | ||
576 | frame->datalen = cpu_to_le16(le16_to_cpu(frame->datalen) + len); | |
577 | } | |
578 | ||
579 | static bool port100_rx_frame_is_valid(void *_frame) | |
580 | { | |
581 | u8 checksum; | |
582 | struct port100_frame *frame = _frame; | |
583 | ||
584 | if (frame->start_frame != cpu_to_be16(PORT100_FRAME_SOF) || | |
585 | frame->extended_frame != cpu_to_be16(PORT100_FRAME_EXT)) | |
586 | return false; | |
587 | ||
588 | checksum = port100_checksum(le16_to_cpu(frame->datalen)); | |
589 | if (checksum != frame->datalen_checksum) | |
590 | return false; | |
591 | ||
592 | checksum = port100_data_checksum(frame->data, | |
593 | le16_to_cpu(frame->datalen)); | |
594 | if (checksum != PORT100_FRAME_CHECKSUM(frame)) | |
595 | return false; | |
596 | ||
597 | return true; | |
598 | } | |
599 | ||
600 | static bool port100_rx_frame_is_ack(struct port100_ack_frame *frame) | |
601 | { | |
602 | return (frame->start_frame == cpu_to_be16(PORT100_FRAME_SOF) && | |
603 | frame->ack_frame == cpu_to_be16(PORT100_FRAME_ACK)); | |
604 | } | |
605 | ||
606 | static inline int port100_rx_frame_size(void *frame) | |
607 | { | |
608 | struct port100_frame *f = frame; | |
609 | ||
610 | return sizeof(struct port100_frame) + le16_to_cpu(f->datalen) + | |
611 | PORT100_FRAME_TAIL_LEN; | |
612 | } | |
613 | ||
614 | static bool port100_rx_frame_is_cmd_response(struct port100 *dev, void *frame) | |
615 | { | |
616 | struct port100_frame *f = frame; | |
617 | ||
618 | return (PORT100_FRAME_CMD(f) == PORT100_CMD_RESPONSE(dev->cmd->code)); | |
619 | } | |
620 | ||
621 | static void port100_recv_response(struct urb *urb) | |
622 | { | |
623 | struct port100 *dev = urb->context; | |
624 | struct port100_cmd *cmd = dev->cmd; | |
625 | u8 *in_frame; | |
626 | ||
627 | cmd->status = urb->status; | |
628 | ||
629 | switch (urb->status) { | |
630 | case 0: | |
631 | break; /* success */ | |
632 | case -ECONNRESET: | |
633 | case -ENOENT: | |
634 | nfc_err(&dev->interface->dev, | |
3590ebc0 | 635 | "The urb has been canceled (status %d)\n", urb->status); |
0347a6ab TE |
636 | goto sched_wq; |
637 | case -ESHUTDOWN: | |
638 | default: | |
3590ebc0 | 639 | nfc_err(&dev->interface->dev, "Urb failure (status %d)\n", |
0347a6ab TE |
640 | urb->status); |
641 | goto sched_wq; | |
642 | } | |
643 | ||
644 | in_frame = dev->in_urb->transfer_buffer; | |
645 | ||
646 | if (!port100_rx_frame_is_valid(in_frame)) { | |
3590ebc0 | 647 | nfc_err(&dev->interface->dev, "Received an invalid frame\n"); |
0347a6ab TE |
648 | cmd->status = -EIO; |
649 | goto sched_wq; | |
650 | } | |
651 | ||
652 | print_hex_dump_debug("PORT100 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, | |
653 | port100_rx_frame_size(in_frame), false); | |
654 | ||
655 | if (!port100_rx_frame_is_cmd_response(dev, in_frame)) { | |
656 | nfc_err(&dev->interface->dev, | |
3590ebc0 | 657 | "It's not the response to the last command\n"); |
0347a6ab TE |
658 | cmd->status = -EIO; |
659 | goto sched_wq; | |
660 | } | |
661 | ||
662 | sched_wq: | |
663 | schedule_work(&dev->cmd_complete_work); | |
664 | } | |
665 | ||
666 | static int port100_submit_urb_for_response(struct port100 *dev, gfp_t flags) | |
667 | { | |
668 | dev->in_urb->complete = port100_recv_response; | |
669 | ||
670 | return usb_submit_urb(dev->in_urb, flags); | |
671 | } | |
672 | ||
673 | static void port100_recv_ack(struct urb *urb) | |
674 | { | |
675 | struct port100 *dev = urb->context; | |
676 | struct port100_cmd *cmd = dev->cmd; | |
677 | struct port100_ack_frame *in_frame; | |
678 | int rc; | |
679 | ||
680 | cmd->status = urb->status; | |
681 | ||
682 | switch (urb->status) { | |
683 | case 0: | |
684 | break; /* success */ | |
685 | case -ECONNRESET: | |
686 | case -ENOENT: | |
687 | nfc_err(&dev->interface->dev, | |
3590ebc0 | 688 | "The urb has been stopped (status %d)\n", urb->status); |
0347a6ab TE |
689 | goto sched_wq; |
690 | case -ESHUTDOWN: | |
691 | default: | |
3590ebc0 | 692 | nfc_err(&dev->interface->dev, "Urb failure (status %d)\n", |
0347a6ab TE |
693 | urb->status); |
694 | goto sched_wq; | |
695 | } | |
696 | ||
697 | in_frame = dev->in_urb->transfer_buffer; | |
698 | ||
699 | if (!port100_rx_frame_is_ack(in_frame)) { | |
3590ebc0 | 700 | nfc_err(&dev->interface->dev, "Received an invalid ack\n"); |
0347a6ab TE |
701 | cmd->status = -EIO; |
702 | goto sched_wq; | |
703 | } | |
704 | ||
705 | rc = port100_submit_urb_for_response(dev, GFP_ATOMIC); | |
706 | if (rc) { | |
707 | nfc_err(&dev->interface->dev, | |
3590ebc0 | 708 | "usb_submit_urb failed with result %d\n", rc); |
0347a6ab TE |
709 | cmd->status = rc; |
710 | goto sched_wq; | |
711 | } | |
712 | ||
713 | return; | |
714 | ||
715 | sched_wq: | |
716 | schedule_work(&dev->cmd_complete_work); | |
717 | } | |
718 | ||
719 | static int port100_submit_urb_for_ack(struct port100 *dev, gfp_t flags) | |
720 | { | |
721 | dev->in_urb->complete = port100_recv_ack; | |
722 | ||
723 | return usb_submit_urb(dev->in_urb, flags); | |
724 | } | |
725 | ||
726 | static int port100_send_ack(struct port100 *dev) | |
727 | { | |
728 | int rc; | |
729 | ||
b74584c1 TE |
730 | mutex_lock(&dev->out_urb_lock); |
731 | ||
a52bd7d2 TE |
732 | init_completion(&dev->cmd_cancel_done); |
733 | ||
b74584c1 TE |
734 | usb_kill_urb(dev->out_urb); |
735 | ||
0347a6ab TE |
736 | dev->out_urb->transfer_buffer = ack_frame; |
737 | dev->out_urb->transfer_buffer_length = sizeof(ack_frame); | |
738 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); | |
739 | ||
b74584c1 TE |
740 | /* Set the cmd_cancel flag only if the URB has been successfully |
741 | * submitted. It will be reset by the out URB completion callback | |
742 | * port100_send_complete(). | |
743 | */ | |
744 | dev->cmd_cancel = !rc; | |
745 | ||
746 | mutex_unlock(&dev->out_urb_lock); | |
747 | ||
a52bd7d2 TE |
748 | if (!rc) |
749 | wait_for_completion(&dev->cmd_cancel_done); | |
750 | ||
0347a6ab TE |
751 | return rc; |
752 | } | |
753 | ||
754 | static int port100_send_frame_async(struct port100 *dev, struct sk_buff *out, | |
755 | struct sk_buff *in, int in_len) | |
756 | { | |
757 | int rc; | |
758 | ||
b74584c1 TE |
759 | mutex_lock(&dev->out_urb_lock); |
760 | ||
761 | /* A command cancel frame as been sent through dev->out_urb. Don't try | |
762 | * to submit a new one. | |
763 | */ | |
764 | if (dev->cmd_cancel) { | |
765 | rc = -EAGAIN; | |
766 | goto exit; | |
767 | } | |
768 | ||
0347a6ab TE |
769 | dev->out_urb->transfer_buffer = out->data; |
770 | dev->out_urb->transfer_buffer_length = out->len; | |
771 | ||
772 | dev->in_urb->transfer_buffer = in->data; | |
773 | dev->in_urb->transfer_buffer_length = in_len; | |
774 | ||
775 | print_hex_dump_debug("PORT100 TX: ", DUMP_PREFIX_NONE, 16, 1, | |
776 | out->data, out->len, false); | |
777 | ||
778 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); | |
779 | if (rc) | |
b74584c1 | 780 | goto exit; |
0347a6ab TE |
781 | |
782 | rc = port100_submit_urb_for_ack(dev, GFP_KERNEL); | |
783 | if (rc) | |
b74584c1 | 784 | usb_unlink_urb(dev->out_urb); |
0347a6ab | 785 | |
b74584c1 TE |
786 | exit: |
787 | mutex_unlock(&dev->out_urb_lock); | |
0347a6ab | 788 | |
0347a6ab TE |
789 | return rc; |
790 | } | |
791 | ||
792 | static void port100_build_cmd_frame(struct port100 *dev, u8 cmd_code, | |
793 | struct sk_buff *skb) | |
794 | { | |
795 | /* payload is already there, just update datalen */ | |
796 | int payload_len = skb->len; | |
797 | ||
798 | skb_push(skb, PORT100_FRAME_HEADER_LEN); | |
799 | skb_put(skb, PORT100_FRAME_TAIL_LEN); | |
800 | ||
801 | port100_tx_frame_init(skb->data, cmd_code); | |
802 | port100_tx_update_payload_len(skb->data, payload_len); | |
803 | port100_tx_frame_finish(skb->data); | |
804 | } | |
805 | ||
806 | static void port100_send_async_complete(struct port100 *dev) | |
807 | { | |
808 | struct port100_cmd *cmd = dev->cmd; | |
809 | int status = cmd->status; | |
810 | ||
811 | struct sk_buff *req = cmd->req; | |
812 | struct sk_buff *resp = cmd->resp; | |
813 | ||
814 | dev_kfree_skb(req); | |
815 | ||
816 | dev->cmd = NULL; | |
817 | ||
818 | if (status < 0) { | |
819 | cmd->complete_cb(dev, cmd->complete_cb_context, | |
820 | ERR_PTR(status)); | |
821 | dev_kfree_skb(resp); | |
822 | goto done; | |
823 | } | |
824 | ||
825 | skb_put(resp, port100_rx_frame_size(resp->data)); | |
826 | skb_pull(resp, PORT100_FRAME_HEADER_LEN); | |
827 | skb_trim(resp, resp->len - PORT100_FRAME_TAIL_LEN); | |
828 | ||
829 | cmd->complete_cb(dev, cmd->complete_cb_context, resp); | |
830 | ||
831 | done: | |
832 | kfree(cmd); | |
833 | } | |
834 | ||
835 | static int port100_send_cmd_async(struct port100 *dev, u8 cmd_code, | |
836 | struct sk_buff *req, | |
837 | port100_send_async_complete_t complete_cb, | |
838 | void *complete_cb_context) | |
839 | { | |
840 | struct port100_cmd *cmd; | |
841 | struct sk_buff *resp; | |
842 | int rc; | |
843 | int resp_len = PORT100_FRAME_HEADER_LEN + | |
844 | PORT100_FRAME_MAX_PAYLOAD_LEN + | |
845 | PORT100_FRAME_TAIL_LEN; | |
846 | ||
e3e02588 TE |
847 | if (dev->cmd) { |
848 | nfc_err(&dev->interface->dev, | |
849 | "A command is still in process\n"); | |
850 | return -EBUSY; | |
851 | } | |
852 | ||
0347a6ab TE |
853 | resp = alloc_skb(resp_len, GFP_KERNEL); |
854 | if (!resp) | |
855 | return -ENOMEM; | |
856 | ||
857 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); | |
858 | if (!cmd) { | |
859 | dev_kfree_skb(resp); | |
860 | return -ENOMEM; | |
861 | } | |
862 | ||
863 | cmd->code = cmd_code; | |
864 | cmd->req = req; | |
865 | cmd->resp = resp; | |
866 | cmd->resp_len = resp_len; | |
867 | cmd->complete_cb = complete_cb; | |
868 | cmd->complete_cb_context = complete_cb_context; | |
869 | ||
870 | port100_build_cmd_frame(dev, cmd_code, req); | |
871 | ||
872 | dev->cmd = cmd; | |
873 | ||
874 | rc = port100_send_frame_async(dev, req, resp, resp_len); | |
875 | if (rc) { | |
876 | kfree(cmd); | |
877 | dev_kfree_skb(resp); | |
878 | dev->cmd = NULL; | |
879 | } | |
880 | ||
881 | return rc; | |
882 | } | |
883 | ||
884 | struct port100_sync_cmd_response { | |
885 | struct sk_buff *resp; | |
886 | struct completion done; | |
887 | }; | |
888 | ||
889 | static void port100_wq_cmd_complete(struct work_struct *work) | |
890 | { | |
891 | struct port100 *dev = container_of(work, struct port100, | |
892 | cmd_complete_work); | |
893 | ||
894 | port100_send_async_complete(dev); | |
895 | } | |
896 | ||
897 | static void port100_send_sync_complete(struct port100 *dev, void *_arg, | |
898 | struct sk_buff *resp) | |
899 | { | |
900 | struct port100_sync_cmd_response *arg = _arg; | |
901 | ||
902 | arg->resp = resp; | |
903 | complete(&arg->done); | |
904 | } | |
905 | ||
906 | static struct sk_buff *port100_send_cmd_sync(struct port100 *dev, u8 cmd_code, | |
907 | struct sk_buff *req) | |
908 | { | |
909 | int rc; | |
910 | struct port100_sync_cmd_response arg; | |
911 | ||
912 | init_completion(&arg.done); | |
913 | ||
914 | rc = port100_send_cmd_async(dev, cmd_code, req, | |
915 | port100_send_sync_complete, &arg); | |
916 | if (rc) { | |
917 | dev_kfree_skb(req); | |
918 | return ERR_PTR(rc); | |
919 | } | |
920 | ||
921 | wait_for_completion(&arg.done); | |
922 | ||
923 | return arg.resp; | |
924 | } | |
925 | ||
926 | static void port100_send_complete(struct urb *urb) | |
927 | { | |
928 | struct port100 *dev = urb->context; | |
929 | ||
a52bd7d2 TE |
930 | if (dev->cmd_cancel) { |
931 | dev->cmd_cancel = false; | |
932 | complete(&dev->cmd_cancel_done); | |
933 | } | |
b74584c1 | 934 | |
0347a6ab TE |
935 | switch (urb->status) { |
936 | case 0: | |
937 | break; /* success */ | |
938 | case -ECONNRESET: | |
939 | case -ENOENT: | |
940 | nfc_err(&dev->interface->dev, | |
3590ebc0 | 941 | "The urb has been stopped (status %d)\n", urb->status); |
0347a6ab TE |
942 | break; |
943 | case -ESHUTDOWN: | |
944 | default: | |
3590ebc0 | 945 | nfc_err(&dev->interface->dev, "Urb failure (status %d)\n", |
0347a6ab TE |
946 | urb->status); |
947 | } | |
948 | } | |
949 | ||
562d4d59 TE |
950 | static void port100_abort_cmd(struct nfc_digital_dev *ddev) |
951 | { | |
0347a6ab TE |
952 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
953 | ||
954 | /* An ack will cancel the last issued command */ | |
955 | port100_send_ack(dev); | |
956 | ||
957 | /* cancel the urb request */ | |
958 | usb_kill_urb(dev->in_urb); | |
959 | } | |
960 | ||
961 | static struct sk_buff *port100_alloc_skb(struct port100 *dev, unsigned int size) | |
962 | { | |
963 | struct sk_buff *skb; | |
964 | ||
965 | skb = alloc_skb(dev->skb_headroom + dev->skb_tailroom + size, | |
966 | GFP_KERNEL); | |
967 | if (skb) | |
968 | skb_reserve(skb, dev->skb_headroom); | |
969 | ||
970 | return skb; | |
971 | } | |
972 | ||
973 | static int port100_set_command_type(struct port100 *dev, u8 command_type) | |
974 | { | |
975 | struct sk_buff *skb; | |
976 | struct sk_buff *resp; | |
977 | int rc; | |
978 | ||
979 | skb = port100_alloc_skb(dev, 1); | |
980 | if (!skb) | |
981 | return -ENOMEM; | |
982 | ||
983 | *skb_put(skb, sizeof(u8)) = command_type; | |
984 | ||
985 | resp = port100_send_cmd_sync(dev, PORT100_CMD_SET_COMMAND_TYPE, skb); | |
986 | if (IS_ERR(resp)) | |
987 | return PTR_ERR(resp); | |
988 | ||
989 | rc = resp->data[0]; | |
990 | ||
991 | dev_kfree_skb(resp); | |
992 | ||
993 | return rc; | |
994 | } | |
995 | ||
996 | static u64 port100_get_command_type_mask(struct port100 *dev) | |
997 | { | |
998 | struct sk_buff *skb; | |
999 | struct sk_buff *resp; | |
1000 | u64 mask; | |
1001 | ||
1002 | skb = port100_alloc_skb(dev, 0); | |
1003 | if (!skb) | |
1004 | return -ENOMEM; | |
1005 | ||
1006 | resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_COMMAND_TYPE, skb); | |
1007 | if (IS_ERR(resp)) | |
1008 | return PTR_ERR(resp); | |
1009 | ||
1010 | if (resp->len < 8) | |
1011 | mask = 0; | |
1012 | else | |
1013 | mask = be64_to_cpu(*(__be64 *)resp->data); | |
1014 | ||
1015 | dev_kfree_skb(resp); | |
1016 | ||
1017 | return mask; | |
1018 | } | |
1019 | ||
1020 | static u16 port100_get_firmware_version(struct port100 *dev) | |
1021 | { | |
1022 | struct sk_buff *skb; | |
1023 | struct sk_buff *resp; | |
1024 | u16 fw_ver; | |
1025 | ||
1026 | skb = port100_alloc_skb(dev, 0); | |
1027 | if (!skb) | |
1028 | return 0; | |
1029 | ||
1030 | resp = port100_send_cmd_sync(dev, PORT100_CMD_GET_FIRMWARE_VERSION, | |
1031 | skb); | |
1032 | if (IS_ERR(resp)) | |
1033 | return 0; | |
1034 | ||
1035 | fw_ver = le16_to_cpu(*(__le16 *)resp->data); | |
1036 | ||
1037 | dev_kfree_skb(resp); | |
1038 | ||
1039 | return fw_ver; | |
562d4d59 TE |
1040 | } |
1041 | ||
1042 | static int port100_switch_rf(struct nfc_digital_dev *ddev, bool on) | |
1043 | { | |
9f7b57f2 TE |
1044 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1045 | struct sk_buff *skb, *resp; | |
1046 | ||
1047 | skb = port100_alloc_skb(dev, 1); | |
1048 | if (!skb) | |
1049 | return -ENOMEM; | |
1050 | ||
1051 | *skb_put(skb, 1) = on ? 1 : 0; | |
1052 | ||
9f0c4542 TE |
1053 | /* Cancel the last command if the device is being switched off */ |
1054 | if (!on) | |
1055 | port100_abort_cmd(ddev); | |
1056 | ||
9f7b57f2 TE |
1057 | resp = port100_send_cmd_sync(dev, PORT100_CMD_SWITCH_RF, skb); |
1058 | ||
1059 | if (IS_ERR(resp)) | |
1060 | return PTR_ERR(resp); | |
1061 | ||
1062 | dev_kfree_skb(resp); | |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | ||
1067 | static int port100_in_set_rf(struct nfc_digital_dev *ddev, u8 rf) | |
1068 | { | |
1069 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
1070 | struct sk_buff *skb; | |
1071 | struct sk_buff *resp; | |
1072 | int rc; | |
1073 | ||
1074 | if (rf >= NFC_DIGITAL_RF_TECH_LAST) | |
1075 | return -EINVAL; | |
1076 | ||
1077 | skb = port100_alloc_skb(dev, sizeof(struct port100_in_rf_setting)); | |
1078 | if (!skb) | |
1079 | return -ENOMEM; | |
1080 | ||
1081 | memcpy(skb_put(skb, sizeof(struct port100_in_rf_setting)), | |
1082 | &in_rf_settings[rf], | |
1083 | sizeof(struct port100_in_rf_setting)); | |
1084 | ||
1085 | resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_RF, skb); | |
1086 | ||
1087 | if (IS_ERR(resp)) | |
1088 | return PTR_ERR(resp); | |
1089 | ||
1090 | rc = resp->data[0]; | |
1091 | ||
1092 | dev_kfree_skb(resp); | |
1093 | ||
1094 | return rc; | |
1095 | } | |
1096 | ||
1097 | static int port100_in_set_framing(struct nfc_digital_dev *ddev, int param) | |
1098 | { | |
1099 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
1100 | struct port100_protocol *protocols; | |
1101 | struct sk_buff *skb; | |
1102 | struct sk_buff *resp; | |
1103 | int num_protocols; | |
1104 | size_t size; | |
1105 | int rc; | |
1106 | ||
1107 | if (param >= NFC_DIGITAL_FRAMING_LAST) | |
1108 | return -EINVAL; | |
1109 | ||
1110 | protocols = in_protocols[param]; | |
1111 | ||
1112 | num_protocols = 0; | |
1113 | while (protocols[num_protocols].number != PORT100_IN_PROT_END) | |
1114 | num_protocols++; | |
1115 | ||
1116 | if (!num_protocols) | |
1117 | return 0; | |
1118 | ||
1119 | size = sizeof(struct port100_protocol) * num_protocols; | |
1120 | ||
1121 | skb = port100_alloc_skb(dev, size); | |
1122 | if (!skb) | |
1123 | return -ENOMEM; | |
1124 | ||
1125 | memcpy(skb_put(skb, size), protocols, size); | |
1126 | ||
1127 | resp = port100_send_cmd_sync(dev, PORT100_CMD_IN_SET_PROTOCOL, skb); | |
1128 | ||
1129 | if (IS_ERR(resp)) | |
1130 | return PTR_ERR(resp); | |
1131 | ||
1132 | rc = resp->data[0]; | |
1133 | ||
1134 | dev_kfree_skb(resp); | |
1135 | ||
1136 | return rc; | |
562d4d59 TE |
1137 | } |
1138 | ||
1139 | static int port100_in_configure_hw(struct nfc_digital_dev *ddev, int type, | |
1140 | int param) | |
1141 | { | |
9f7b57f2 TE |
1142 | if (type == NFC_DIGITAL_CONFIG_RF_TECH) |
1143 | return port100_in_set_rf(ddev, param); | |
1144 | ||
1145 | if (type == NFC_DIGITAL_CONFIG_FRAMING) | |
1146 | return port100_in_set_framing(ddev, param); | |
1147 | ||
1148 | return -EINVAL; | |
1149 | } | |
1150 | ||
1151 | static void port100_in_comm_rf_complete(struct port100 *dev, void *arg, | |
1152 | struct sk_buff *resp) | |
1153 | { | |
1154 | struct port100_cb_arg *cb_arg = arg; | |
1155 | nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; | |
1156 | u32 status; | |
1157 | int rc; | |
1158 | ||
1159 | if (IS_ERR(resp)) { | |
1160 | rc = PTR_ERR(resp); | |
1161 | goto exit; | |
1162 | } | |
1163 | ||
1164 | if (resp->len < 4) { | |
1165 | nfc_err(&dev->interface->dev, | |
3590ebc0 | 1166 | "Invalid packet length received\n"); |
9f7b57f2 TE |
1167 | rc = -EIO; |
1168 | goto error; | |
1169 | } | |
1170 | ||
1171 | status = le32_to_cpu(*(__le32 *)resp->data); | |
1172 | ||
1173 | skb_pull(resp, sizeof(u32)); | |
1174 | ||
1175 | if (status == PORT100_CMD_STATUS_TIMEOUT) { | |
1176 | rc = -ETIMEDOUT; | |
1177 | goto error; | |
1178 | } | |
1179 | ||
1180 | if (status != PORT100_CMD_STATUS_OK) { | |
1181 | nfc_err(&dev->interface->dev, | |
1182 | "in_comm_rf failed with status 0x%08x\n", status); | |
1183 | rc = -EIO; | |
1184 | goto error; | |
1185 | } | |
1186 | ||
1187 | /* Remove collision bits byte */ | |
1188 | skb_pull(resp, 1); | |
1189 | ||
1190 | goto exit; | |
1191 | ||
1192 | error: | |
1193 | kfree_skb(resp); | |
1194 | resp = ERR_PTR(rc); | |
1195 | ||
1196 | exit: | |
1197 | cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); | |
1198 | ||
1199 | kfree(cb_arg); | |
562d4d59 TE |
1200 | } |
1201 | ||
1202 | static int port100_in_send_cmd(struct nfc_digital_dev *ddev, | |
1203 | struct sk_buff *skb, u16 _timeout, | |
1204 | nfc_digital_cmd_complete_t cb, void *arg) | |
1205 | { | |
9f7b57f2 TE |
1206 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1207 | struct port100_cb_arg *cb_arg; | |
1208 | __le16 timeout; | |
1209 | ||
1210 | cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); | |
1211 | if (!cb_arg) | |
1212 | return -ENOMEM; | |
1213 | ||
1214 | cb_arg->complete_cb = cb; | |
1215 | cb_arg->complete_arg = arg; | |
1216 | ||
1217 | timeout = cpu_to_le16(_timeout * 10); | |
1218 | ||
1219 | memcpy(skb_push(skb, sizeof(__le16)), &timeout, sizeof(__le16)); | |
1220 | ||
1221 | return port100_send_cmd_async(dev, PORT100_CMD_IN_COMM_RF, skb, | |
1222 | port100_in_comm_rf_complete, cb_arg); | |
562d4d59 TE |
1223 | } |
1224 | ||
7227c021 TE |
1225 | static int port100_tg_set_rf(struct nfc_digital_dev *ddev, u8 rf) |
1226 | { | |
1227 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
1228 | struct sk_buff *skb; | |
1229 | struct sk_buff *resp; | |
1230 | int rc; | |
1231 | ||
1232 | if (rf >= NFC_DIGITAL_RF_TECH_LAST) | |
1233 | return -EINVAL; | |
1234 | ||
1235 | skb = port100_alloc_skb(dev, sizeof(struct port100_tg_rf_setting)); | |
1236 | if (!skb) | |
1237 | return -ENOMEM; | |
1238 | ||
1239 | memcpy(skb_put(skb, sizeof(struct port100_tg_rf_setting)), | |
1240 | &tg_rf_settings[rf], | |
1241 | sizeof(struct port100_tg_rf_setting)); | |
1242 | ||
1243 | resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_RF, skb); | |
1244 | ||
1245 | if (IS_ERR(resp)) | |
1246 | return PTR_ERR(resp); | |
1247 | ||
1248 | rc = resp->data[0]; | |
1249 | ||
1250 | dev_kfree_skb(resp); | |
1251 | ||
1252 | return rc; | |
1253 | } | |
1254 | ||
1255 | static int port100_tg_set_framing(struct nfc_digital_dev *ddev, int param) | |
1256 | { | |
1257 | struct port100 *dev = nfc_digital_get_drvdata(ddev); | |
1258 | struct port100_protocol *protocols; | |
1259 | struct sk_buff *skb; | |
1260 | struct sk_buff *resp; | |
1261 | int rc; | |
1262 | int num_protocols; | |
1263 | size_t size; | |
1264 | ||
1265 | if (param >= NFC_DIGITAL_FRAMING_LAST) | |
1266 | return -EINVAL; | |
1267 | ||
1268 | protocols = tg_protocols[param]; | |
1269 | ||
1270 | num_protocols = 0; | |
1271 | while (protocols[num_protocols].number != PORT100_TG_PROT_END) | |
1272 | num_protocols++; | |
1273 | ||
1274 | if (!num_protocols) | |
1275 | return 0; | |
1276 | ||
1277 | size = sizeof(struct port100_protocol) * num_protocols; | |
1278 | ||
1279 | skb = port100_alloc_skb(dev, size); | |
1280 | if (!skb) | |
1281 | return -ENOMEM; | |
1282 | ||
1283 | memcpy(skb_put(skb, size), protocols, size); | |
1284 | ||
1285 | resp = port100_send_cmd_sync(dev, PORT100_CMD_TG_SET_PROTOCOL, skb); | |
1286 | ||
1287 | if (IS_ERR(resp)) | |
1288 | return PTR_ERR(resp); | |
1289 | ||
1290 | rc = resp->data[0]; | |
1291 | ||
1292 | dev_kfree_skb(resp); | |
1293 | ||
1294 | return rc; | |
1295 | } | |
1296 | ||
562d4d59 TE |
1297 | static int port100_tg_configure_hw(struct nfc_digital_dev *ddev, int type, |
1298 | int param) | |
1299 | { | |
7227c021 TE |
1300 | if (type == NFC_DIGITAL_CONFIG_RF_TECH) |
1301 | return port100_tg_set_rf(ddev, param); | |
1302 | ||
1303 | if (type == NFC_DIGITAL_CONFIG_FRAMING) | |
1304 | return port100_tg_set_framing(ddev, param); | |
1305 | ||
1306 | return -EINVAL; | |
1307 | } | |
1308 | ||
1309 | static bool port100_tg_target_activated(struct port100 *dev, u8 tgt_activated) | |
1310 | { | |
1311 | u8 mask; | |
1312 | ||
1313 | switch (dev->cmd_type) { | |
1314 | case PORT100_CMD_TYPE_0: | |
1315 | mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK; | |
1316 | break; | |
1317 | case PORT100_CMD_TYPE_1: | |
1318 | mask = PORT100_MDAA_TGT_HAS_BEEN_ACTIVATED_MASK | | |
1319 | PORT100_MDAA_TGT_WAS_ACTIVATED_MASK; | |
1320 | break; | |
1321 | default: | |
3590ebc0 | 1322 | nfc_err(&dev->interface->dev, "Unknown command type\n"); |
7227c021 TE |
1323 | return false; |
1324 | } | |
1325 | ||
1326 | return ((tgt_activated & mask) == mask); | |
1327 | } | |
1328 | ||
1329 | static void port100_tg_comm_rf_complete(struct port100 *dev, void *arg, | |
1330 | struct sk_buff *resp) | |
1331 | { | |
1332 | u32 status; | |
1333 | struct port100_cb_arg *cb_arg = arg; | |
1334 | nfc_digital_cmd_complete_t cb = cb_arg->complete_cb; | |
1335 | struct port100_tg_comm_rf_res *hdr; | |
1336 | ||
1337 | if (IS_ERR(resp)) | |
1338 | goto exit; | |
1339 | ||
1340 | hdr = (struct port100_tg_comm_rf_res *)resp->data; | |
1341 | ||
1342 | status = le32_to_cpu(hdr->status); | |
1343 | ||
1344 | if (cb_arg->mdaa && | |
1345 | !port100_tg_target_activated(dev, hdr->target_activated)) { | |
1346 | kfree_skb(resp); | |
1347 | resp = ERR_PTR(-ETIMEDOUT); | |
1348 | ||
1349 | goto exit; | |
1350 | } | |
1351 | ||
1352 | skb_pull(resp, sizeof(struct port100_tg_comm_rf_res)); | |
1353 | ||
1354 | if (status != PORT100_CMD_STATUS_OK) { | |
1355 | kfree_skb(resp); | |
1356 | ||
1357 | if (status == PORT100_CMD_STATUS_TIMEOUT) | |
1358 | resp = ERR_PTR(-ETIMEDOUT); | |
1359 | else | |
1360 | resp = ERR_PTR(-EIO); | |
1361 | } | |
1362 | ||
1363 | exit: | |
1364 | cb(dev->nfc_digital_dev, cb_arg->complete_arg, resp); | |
1365 | ||
1366 | kfree(cb_arg); | |
562d4d59 TE |
1367 | } |
1368 | ||
1369 | static int port100_tg_send_cmd(struct nfc_digital_dev *ddev, | |
1370 | struct sk_buff *skb, u16 timeout, | |
1371 | nfc_digital_cmd_complete_t cb, void *arg) | |
1372 | { | |
7227c021 TE |
1373 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1374 | struct port100_tg_comm_rf_cmd *hdr; | |
1375 | struct port100_cb_arg *cb_arg; | |
1376 | ||
1377 | cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); | |
1378 | if (!cb_arg) | |
1379 | return -ENOMEM; | |
1380 | ||
1381 | cb_arg->complete_cb = cb; | |
1382 | cb_arg->complete_arg = arg; | |
1383 | ||
1384 | skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); | |
1385 | ||
1386 | hdr = (struct port100_tg_comm_rf_cmd *)skb->data; | |
1387 | ||
1388 | memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); | |
1389 | hdr->guard_time = cpu_to_le16(500); | |
1390 | hdr->send_timeout = cpu_to_le16(0xFFFF); | |
1391 | hdr->recv_timeout = cpu_to_le16(timeout); | |
1392 | ||
1393 | return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, | |
1394 | port100_tg_comm_rf_complete, cb_arg); | |
562d4d59 TE |
1395 | } |
1396 | ||
1397 | static int port100_listen_mdaa(struct nfc_digital_dev *ddev, | |
1398 | struct digital_tg_mdaa_params *params, | |
1399 | u16 timeout, | |
1400 | nfc_digital_cmd_complete_t cb, void *arg) | |
1401 | { | |
7227c021 TE |
1402 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1403 | struct port100_tg_comm_rf_cmd *hdr; | |
1404 | struct port100_cb_arg *cb_arg; | |
1405 | struct sk_buff *skb; | |
1406 | int rc; | |
1407 | ||
1408 | rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_RF_TECH, | |
1409 | NFC_DIGITAL_RF_TECH_106A); | |
1410 | if (rc) | |
1411 | return rc; | |
1412 | ||
1413 | rc = port100_tg_configure_hw(ddev, NFC_DIGITAL_CONFIG_FRAMING, | |
1414 | NFC_DIGITAL_FRAMING_NFCA_NFC_DEP); | |
1415 | if (rc) | |
1416 | return rc; | |
1417 | ||
1418 | cb_arg = kzalloc(sizeof(struct port100_cb_arg), GFP_KERNEL); | |
1419 | if (!cb_arg) | |
1420 | return -ENOMEM; | |
1421 | ||
1422 | cb_arg->complete_cb = cb; | |
1423 | cb_arg->complete_arg = arg; | |
1424 | cb_arg->mdaa = 1; | |
1425 | ||
1426 | skb = port100_alloc_skb(dev, 0); | |
1427 | if (!skb) { | |
1428 | kfree(cb_arg); | |
1429 | return -ENOMEM; | |
1430 | } | |
1431 | ||
1432 | skb_push(skb, sizeof(struct port100_tg_comm_rf_cmd)); | |
1433 | hdr = (struct port100_tg_comm_rf_cmd *)skb->data; | |
1434 | ||
1435 | memset(hdr, 0, sizeof(struct port100_tg_comm_rf_cmd)); | |
1436 | ||
1437 | hdr->guard_time = 0; | |
1438 | hdr->send_timeout = cpu_to_le16(0xFFFF); | |
1439 | hdr->mdaa = 1; | |
1440 | hdr->nfca_param[0] = (params->sens_res >> 8) & 0xFF; | |
1441 | hdr->nfca_param[1] = params->sens_res & 0xFF; | |
1442 | memcpy(hdr->nfca_param + 2, params->nfcid1, 3); | |
1443 | hdr->nfca_param[5] = params->sel_res; | |
1444 | memcpy(hdr->nfcf_param, params->nfcid2, 8); | |
1445 | hdr->nfcf_param[16] = (params->sc >> 8) & 0xFF; | |
1446 | hdr->nfcf_param[17] = params->sc & 0xFF; | |
1447 | hdr->recv_timeout = cpu_to_le16(timeout); | |
1448 | ||
1449 | return port100_send_cmd_async(dev, PORT100_CMD_TG_COMM_RF, skb, | |
1450 | port100_tg_comm_rf_complete, cb_arg); | |
562d4d59 TE |
1451 | } |
1452 | ||
1453 | static int port100_listen(struct nfc_digital_dev *ddev, u16 timeout, | |
1454 | nfc_digital_cmd_complete_t cb, void *arg) | |
1455 | { | |
7227c021 TE |
1456 | struct port100 *dev = nfc_digital_get_drvdata(ddev); |
1457 | struct sk_buff *skb; | |
1458 | ||
1459 | skb = port100_alloc_skb(dev, 0); | |
1460 | if (!skb) | |
1461 | return -ENOMEM; | |
1462 | ||
1463 | return port100_tg_send_cmd(ddev, skb, timeout, cb, arg); | |
562d4d59 TE |
1464 | } |
1465 | ||
1466 | static struct nfc_digital_ops port100_digital_ops = { | |
1467 | .in_configure_hw = port100_in_configure_hw, | |
1468 | .in_send_cmd = port100_in_send_cmd, | |
1469 | ||
1470 | .tg_listen_mdaa = port100_listen_mdaa, | |
1471 | .tg_listen = port100_listen, | |
1472 | .tg_configure_hw = port100_tg_configure_hw, | |
1473 | .tg_send_cmd = port100_tg_send_cmd, | |
1474 | ||
1475 | .switch_rf = port100_switch_rf, | |
1476 | .abort_cmd = port100_abort_cmd, | |
1477 | }; | |
1478 | ||
1479 | static const struct usb_device_id port100_table[] = { | |
4aa7ed02 | 1480 | { USB_DEVICE(SONY_VENDOR_ID, RCS380_PRODUCT_ID), }, |
562d4d59 TE |
1481 | { } |
1482 | }; | |
1483 | MODULE_DEVICE_TABLE(usb, port100_table); | |
1484 | ||
1485 | static int port100_probe(struct usb_interface *interface, | |
1486 | const struct usb_device_id *id) | |
1487 | { | |
1488 | struct port100 *dev; | |
1489 | int rc; | |
0347a6ab TE |
1490 | struct usb_host_interface *iface_desc; |
1491 | struct usb_endpoint_descriptor *endpoint; | |
1492 | int in_endpoint; | |
1493 | int out_endpoint; | |
1494 | u16 fw_version; | |
1495 | u64 cmd_type_mask; | |
1496 | int i; | |
562d4d59 TE |
1497 | |
1498 | dev = devm_kzalloc(&interface->dev, sizeof(struct port100), GFP_KERNEL); | |
1499 | if (!dev) | |
1500 | return -ENOMEM; | |
1501 | ||
b74584c1 | 1502 | mutex_init(&dev->out_urb_lock); |
562d4d59 TE |
1503 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); |
1504 | dev->interface = interface; | |
1505 | usb_set_intfdata(interface, dev); | |
1506 | ||
0347a6ab TE |
1507 | in_endpoint = out_endpoint = 0; |
1508 | iface_desc = interface->cur_altsetting; | |
1509 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
1510 | endpoint = &iface_desc->endpoint[i].desc; | |
1511 | ||
1512 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) | |
1513 | in_endpoint = endpoint->bEndpointAddress; | |
1514 | ||
1515 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) | |
1516 | out_endpoint = endpoint->bEndpointAddress; | |
1517 | } | |
1518 | ||
1519 | if (!in_endpoint || !out_endpoint) { | |
1520 | nfc_err(&interface->dev, | |
1521 | "Could not find bulk-in or bulk-out endpoint\n"); | |
1522 | rc = -ENODEV; | |
1523 | goto error; | |
1524 | } | |
1525 | ||
1526 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1527 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); | |
1528 | ||
1529 | if (!dev->in_urb || !dev->out_urb) { | |
1530 | nfc_err(&interface->dev, "Could not allocate USB URBs\n"); | |
1531 | rc = -ENOMEM; | |
1532 | goto error; | |
1533 | } | |
1534 | ||
1535 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
1536 | usb_rcvbulkpipe(dev->udev, in_endpoint), | |
1537 | NULL, 0, NULL, dev); | |
1538 | usb_fill_bulk_urb(dev->out_urb, dev->udev, | |
1539 | usb_sndbulkpipe(dev->udev, out_endpoint), | |
1540 | NULL, 0, port100_send_complete, dev); | |
1541 | ||
1542 | dev->skb_headroom = PORT100_FRAME_HEADER_LEN + | |
1543 | PORT100_COMM_RF_HEAD_MAX_LEN; | |
1544 | dev->skb_tailroom = PORT100_FRAME_TAIL_LEN; | |
1545 | ||
1546 | INIT_WORK(&dev->cmd_complete_work, port100_wq_cmd_complete); | |
1547 | ||
1548 | /* The first thing to do with the Port-100 is to set the command type | |
1549 | * to be used. If supported we use command type 1. 0 otherwise. | |
1550 | */ | |
1551 | cmd_type_mask = port100_get_command_type_mask(dev); | |
1552 | if (!cmd_type_mask) { | |
1553 | nfc_err(&interface->dev, | |
3590ebc0 | 1554 | "Could not get supported command types\n"); |
0347a6ab TE |
1555 | rc = -ENODEV; |
1556 | goto error; | |
1557 | } | |
1558 | ||
1559 | if (PORT100_CMD_TYPE_IS_SUPPORTED(cmd_type_mask, PORT100_CMD_TYPE_1)) | |
1560 | dev->cmd_type = PORT100_CMD_TYPE_1; | |
1561 | else | |
1562 | dev->cmd_type = PORT100_CMD_TYPE_0; | |
1563 | ||
1564 | rc = port100_set_command_type(dev, dev->cmd_type); | |
1565 | if (rc) { | |
1566 | nfc_err(&interface->dev, | |
3590ebc0 | 1567 | "The device does not support command type %u\n", |
0347a6ab TE |
1568 | dev->cmd_type); |
1569 | goto error; | |
1570 | } | |
1571 | ||
1572 | fw_version = port100_get_firmware_version(dev); | |
1573 | if (!fw_version) | |
1574 | nfc_err(&interface->dev, | |
3590ebc0 | 1575 | "Could not get device firmware version\n"); |
0347a6ab TE |
1576 | |
1577 | nfc_info(&interface->dev, | |
1578 | "Sony NFC Port-100 Series attached (firmware v%x.%02x)\n", | |
1579 | (fw_version & 0xFF00) >> 8, fw_version & 0xFF); | |
562d4d59 TE |
1580 | |
1581 | dev->nfc_digital_dev = nfc_digital_allocate_device(&port100_digital_ops, | |
1582 | PORT100_PROTOCOLS, | |
1583 | PORT100_CAPABILITIES, | |
1584 | dev->skb_headroom, | |
1585 | dev->skb_tailroom); | |
1586 | if (!dev->nfc_digital_dev) { | |
1587 | nfc_err(&interface->dev, | |
3590ebc0 | 1588 | "Could not allocate nfc_digital_dev\n"); |
562d4d59 TE |
1589 | rc = -ENOMEM; |
1590 | goto error; | |
1591 | } | |
1592 | ||
1593 | nfc_digital_set_parent_dev(dev->nfc_digital_dev, &interface->dev); | |
1594 | nfc_digital_set_drvdata(dev->nfc_digital_dev, dev); | |
1595 | ||
1596 | rc = nfc_digital_register_device(dev->nfc_digital_dev); | |
1597 | if (rc) { | |
1598 | nfc_err(&interface->dev, | |
3590ebc0 | 1599 | "Could not register digital device\n"); |
562d4d59 TE |
1600 | goto free_nfc_dev; |
1601 | } | |
1602 | ||
1603 | return 0; | |
1604 | ||
1605 | free_nfc_dev: | |
1606 | nfc_digital_free_device(dev->nfc_digital_dev); | |
1607 | ||
1608 | error: | |
0347a6ab TE |
1609 | usb_free_urb(dev->in_urb); |
1610 | usb_free_urb(dev->out_urb); | |
1611 | usb_put_dev(dev->udev); | |
1612 | ||
562d4d59 TE |
1613 | return rc; |
1614 | } | |
1615 | ||
1616 | static void port100_disconnect(struct usb_interface *interface) | |
1617 | { | |
1618 | struct port100 *dev; | |
1619 | ||
1620 | dev = usb_get_intfdata(interface); | |
1621 | usb_set_intfdata(interface, NULL); | |
1622 | ||
1623 | nfc_digital_unregister_device(dev->nfc_digital_dev); | |
1624 | nfc_digital_free_device(dev->nfc_digital_dev); | |
1625 | ||
0347a6ab TE |
1626 | usb_kill_urb(dev->in_urb); |
1627 | usb_kill_urb(dev->out_urb); | |
1628 | ||
1629 | usb_free_urb(dev->in_urb); | |
1630 | usb_free_urb(dev->out_urb); | |
c36aeba8 | 1631 | usb_put_dev(dev->udev); |
0347a6ab TE |
1632 | |
1633 | kfree(dev->cmd); | |
1634 | ||
3590ebc0 | 1635 | nfc_info(&interface->dev, "Sony Port-100 NFC device disconnected\n"); |
562d4d59 TE |
1636 | } |
1637 | ||
1638 | static struct usb_driver port100_driver = { | |
1639 | .name = "port100", | |
1640 | .probe = port100_probe, | |
1641 | .disconnect = port100_disconnect, | |
1642 | .id_table = port100_table, | |
1643 | }; | |
1644 | ||
1645 | module_usb_driver(port100_driver); | |
1646 | ||
1647 | MODULE_DESCRIPTION("NFC Port-100 series usb driver ver " VERSION); | |
1648 | MODULE_VERSION(VERSION); | |
1649 | MODULE_LICENSE("GPL"); |