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