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c46ee386 AAJ |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the | |
20 | * Free Software Foundation, Inc., | |
21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | ||
24 | #include <linux/device.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/usb.h> | |
29 | #include <linux/nfc.h> | |
30 | #include <linux/netdevice.h> | |
55eb94f9 | 31 | #include <net/nfc/nfc.h> |
c46ee386 AAJ |
32 | |
33 | #define VERSION "0.1" | |
34 | ||
35 | #define PN533_VENDOR_ID 0x4CC | |
36 | #define PN533_PRODUCT_ID 0x2533 | |
37 | ||
38 | #define SCM_VENDOR_ID 0x4E6 | |
39 | #define SCL3711_PRODUCT_ID 0x5591 | |
40 | ||
5c7b0531 SO |
41 | #define SONY_VENDOR_ID 0x054c |
42 | #define PASORI_PRODUCT_ID 0x02e1 | |
43 | ||
44 | #define PN533_QUIRKS_TYPE_A BIT(0) | |
45 | #define PN533_QUIRKS_TYPE_F BIT(1) | |
46 | #define PN533_QUIRKS_DEP BIT(2) | |
47 | #define PN533_QUIRKS_RAW_EXCHANGE BIT(3) | |
48 | ||
49 | #define PN533_DEVICE_STD 0x1 | |
50 | #define PN533_DEVICE_PASORI 0x2 | |
51 | ||
01d719a2 SO |
52 | #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\ |
53 | NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\ | |
54 | NFC_PROTO_NFC_DEP_MASK |\ | |
55 | NFC_PROTO_ISO14443_B_MASK) | |
5c7b0531 SO |
56 | |
57 | #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ | |
58 | NFC_PROTO_MIFARE_MASK | \ | |
59 | NFC_PROTO_FELICA_MASK | \ | |
01d719a2 | 60 | NFC_PROTO_ISO14443_MASK | \ |
5c7b0531 SO |
61 | NFC_PROTO_NFC_DEP_MASK) |
62 | ||
c46ee386 | 63 | static const struct usb_device_id pn533_table[] = { |
5c7b0531 SO |
64 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
65 | .idVendor = PN533_VENDOR_ID, | |
66 | .idProduct = PN533_PRODUCT_ID, | |
67 | .driver_info = PN533_DEVICE_STD, | |
68 | }, | |
69 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
70 | .idVendor = SCM_VENDOR_ID, | |
71 | .idProduct = SCL3711_PRODUCT_ID, | |
72 | .driver_info = PN533_DEVICE_STD, | |
73 | }, | |
74 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
75 | .idVendor = SONY_VENDOR_ID, | |
76 | .idProduct = PASORI_PRODUCT_ID, | |
77 | .driver_info = PN533_DEVICE_PASORI, | |
78 | }, | |
c46ee386 AAJ |
79 | { } |
80 | }; | |
81 | MODULE_DEVICE_TABLE(usb, pn533_table); | |
82 | ||
6fbbdc16 SO |
83 | /* How much time we spend listening for initiators */ |
84 | #define PN533_LISTEN_TIME 2 | |
85 | ||
c46ee386 | 86 | /* frame definitions */ |
82dec34d WR |
87 | #define PN533_NORMAL_FRAME_MAX_LEN 262 /* 6 (PREAMBLE, SOF, LEN, LCS, TFI) |
88 | 254 (DATA) | |
89 | 2 (DCS, postamble) */ | |
90 | ||
c46ee386 AAJ |
91 | #define PN533_FRAME_TAIL_SIZE 2 |
92 | #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \ | |
93 | PN533_FRAME_TAIL_SIZE) | |
94 | #define PN533_FRAME_ACK_SIZE (sizeof(struct pn533_frame) + 1) | |
95 | #define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen]) | |
96 | #define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1]) | |
97 | ||
98 | /* start of frame */ | |
99 | #define PN533_SOF 0x00FF | |
100 | ||
101 | /* frame identifier: in/out/error */ | |
102 | #define PN533_FRAME_IDENTIFIER(f) (f->data[0]) | |
103 | #define PN533_DIR_OUT 0xD4 | |
104 | #define PN533_DIR_IN 0xD5 | |
105 | ||
106 | /* PN533 Commands */ | |
107 | #define PN533_FRAME_CMD(f) (f->data[1]) | |
108 | #define PN533_FRAME_CMD_PARAMS_PTR(f) (&f->data[2]) | |
109 | #define PN533_FRAME_CMD_PARAMS_LEN(f) (f->datalen - 2) | |
110 | ||
111 | #define PN533_CMD_GET_FIRMWARE_VERSION 0x02 | |
112 | #define PN533_CMD_RF_CONFIGURATION 0x32 | |
113 | #define PN533_CMD_IN_DATA_EXCHANGE 0x40 | |
5c7b0531 | 114 | #define PN533_CMD_IN_COMM_THRU 0x42 |
c46ee386 AAJ |
115 | #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A |
116 | #define PN533_CMD_IN_ATR 0x50 | |
117 | #define PN533_CMD_IN_RELEASE 0x52 | |
361f3cb7 | 118 | #define PN533_CMD_IN_JUMP_FOR_DEP 0x56 |
c46ee386 | 119 | |
ad3823ce | 120 | #define PN533_CMD_TG_INIT_AS_TARGET 0x8c |
103b34cf | 121 | #define PN533_CMD_TG_GET_DATA 0x86 |
dadb06f2 | 122 | #define PN533_CMD_TG_SET_DATA 0x8e |
ad3823ce | 123 | |
c46ee386 AAJ |
124 | #define PN533_CMD_RESPONSE(cmd) (cmd + 1) |
125 | ||
126 | /* PN533 Return codes */ | |
127 | #define PN533_CMD_RET_MASK 0x3F | |
128 | #define PN533_CMD_MI_MASK 0x40 | |
129 | #define PN533_CMD_RET_SUCCESS 0x00 | |
130 | ||
103b34cf SO |
131 | /* PN533 status codes */ |
132 | #define PN533_STATUS_TARGET_RELEASED 0x29 | |
133 | ||
c46ee386 AAJ |
134 | struct pn533; |
135 | ||
136 | typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, | |
137 | u8 *params, int params_len); | |
138 | ||
139 | /* structs for pn533 commands */ | |
140 | ||
141 | /* PN533_CMD_GET_FIRMWARE_VERSION */ | |
142 | struct pn533_fw_version { | |
143 | u8 ic; | |
144 | u8 ver; | |
145 | u8 rev; | |
146 | u8 support; | |
147 | }; | |
148 | ||
149 | /* PN533_CMD_RF_CONFIGURATION */ | |
34a85bfc | 150 | #define PN533_CFGITEM_TIMING 0x02 |
c46ee386 | 151 | #define PN533_CFGITEM_MAX_RETRIES 0x05 |
5c7b0531 | 152 | #define PN533_CFGITEM_PASORI 0x82 |
c46ee386 | 153 | |
34a85bfc SO |
154 | #define PN533_CONFIG_TIMING_102 0xb |
155 | #define PN533_CONFIG_TIMING_204 0xc | |
156 | #define PN533_CONFIG_TIMING_409 0xd | |
157 | #define PN533_CONFIG_TIMING_819 0xe | |
158 | ||
c46ee386 AAJ |
159 | #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 |
160 | #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF | |
161 | ||
162 | struct pn533_config_max_retries { | |
163 | u8 mx_rty_atr; | |
164 | u8 mx_rty_psl; | |
165 | u8 mx_rty_passive_act; | |
166 | } __packed; | |
167 | ||
34a85bfc SO |
168 | struct pn533_config_timing { |
169 | u8 rfu; | |
170 | u8 atr_res_timeout; | |
171 | u8 dep_timeout; | |
172 | } __packed; | |
173 | ||
c46ee386 AAJ |
174 | /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ |
175 | ||
176 | /* felica commands opcode */ | |
177 | #define PN533_FELICA_OPC_SENSF_REQ 0 | |
178 | #define PN533_FELICA_OPC_SENSF_RES 1 | |
179 | /* felica SENSF_REQ parameters */ | |
180 | #define PN533_FELICA_SENSF_SC_ALL 0xFFFF | |
181 | #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 | |
182 | #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 | |
183 | #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 | |
184 | ||
185 | /* type B initiator_data values */ | |
186 | #define PN533_TYPE_B_AFI_ALL_FAMILIES 0 | |
187 | #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 | |
188 | #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 | |
189 | ||
190 | union pn533_cmd_poll_initdata { | |
191 | struct { | |
192 | u8 afi; | |
193 | u8 polling_method; | |
194 | } __packed type_b; | |
195 | struct { | |
196 | u8 opcode; | |
197 | __be16 sc; | |
198 | u8 rc; | |
199 | u8 tsn; | |
200 | } __packed felica; | |
201 | }; | |
202 | ||
203 | /* Poll modulations */ | |
204 | enum { | |
205 | PN533_POLL_MOD_106KBPS_A, | |
206 | PN533_POLL_MOD_212KBPS_FELICA, | |
207 | PN533_POLL_MOD_424KBPS_FELICA, | |
208 | PN533_POLL_MOD_106KBPS_JEWEL, | |
209 | PN533_POLL_MOD_847KBPS_B, | |
6fbbdc16 | 210 | PN533_LISTEN_MOD, |
c46ee386 AAJ |
211 | |
212 | __PN533_POLL_MOD_AFTER_LAST, | |
213 | }; | |
214 | #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) | |
215 | ||
216 | struct pn533_poll_modulations { | |
217 | struct { | |
218 | u8 maxtg; | |
219 | u8 brty; | |
220 | union pn533_cmd_poll_initdata initiator_data; | |
221 | } __packed data; | |
222 | u8 len; | |
223 | }; | |
224 | ||
225 | const struct pn533_poll_modulations poll_mod[] = { | |
226 | [PN533_POLL_MOD_106KBPS_A] = { | |
227 | .data = { | |
228 | .maxtg = 1, | |
229 | .brty = 0, | |
230 | }, | |
231 | .len = 2, | |
232 | }, | |
233 | [PN533_POLL_MOD_212KBPS_FELICA] = { | |
234 | .data = { | |
235 | .maxtg = 1, | |
236 | .brty = 1, | |
237 | .initiator_data.felica = { | |
238 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
239 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
240 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
241 | .tsn = 0, | |
242 | }, | |
243 | }, | |
244 | .len = 7, | |
245 | }, | |
246 | [PN533_POLL_MOD_424KBPS_FELICA] = { | |
247 | .data = { | |
248 | .maxtg = 1, | |
249 | .brty = 2, | |
250 | .initiator_data.felica = { | |
251 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
252 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
253 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
254 | .tsn = 0, | |
255 | }, | |
256 | }, | |
257 | .len = 7, | |
258 | }, | |
259 | [PN533_POLL_MOD_106KBPS_JEWEL] = { | |
260 | .data = { | |
261 | .maxtg = 1, | |
262 | .brty = 4, | |
263 | }, | |
264 | .len = 2, | |
265 | }, | |
266 | [PN533_POLL_MOD_847KBPS_B] = { | |
267 | .data = { | |
268 | .maxtg = 1, | |
269 | .brty = 8, | |
270 | .initiator_data.type_b = { | |
271 | .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, | |
272 | .polling_method = | |
273 | PN533_TYPE_B_POLL_METHOD_TIMESLOT, | |
274 | }, | |
275 | }, | |
276 | .len = 3, | |
277 | }, | |
6fbbdc16 SO |
278 | [PN533_LISTEN_MOD] = { |
279 | .len = 0, | |
280 | }, | |
c46ee386 AAJ |
281 | }; |
282 | ||
283 | /* PN533_CMD_IN_ATR */ | |
284 | ||
285 | struct pn533_cmd_activate_param { | |
286 | u8 tg; | |
287 | u8 next; | |
288 | } __packed; | |
289 | ||
290 | struct pn533_cmd_activate_response { | |
291 | u8 status; | |
292 | u8 nfcid3t[10]; | |
293 | u8 didt; | |
294 | u8 bst; | |
295 | u8 brt; | |
296 | u8 to; | |
297 | u8 ppt; | |
298 | /* optional */ | |
299 | u8 gt[]; | |
300 | } __packed; | |
301 | ||
361f3cb7 SO |
302 | /* PN533_CMD_IN_JUMP_FOR_DEP */ |
303 | struct pn533_cmd_jump_dep { | |
304 | u8 active; | |
305 | u8 baud; | |
306 | u8 next; | |
d7f3345d | 307 | u8 data[]; |
361f3cb7 SO |
308 | } __packed; |
309 | ||
310 | struct pn533_cmd_jump_dep_response { | |
311 | u8 status; | |
312 | u8 tg; | |
313 | u8 nfcid3t[10]; | |
314 | u8 didt; | |
315 | u8 bst; | |
316 | u8 brt; | |
317 | u8 to; | |
318 | u8 ppt; | |
319 | /* optional */ | |
320 | u8 gt[]; | |
321 | } __packed; | |
c46ee386 | 322 | |
ad3823ce SO |
323 | |
324 | /* PN533_TG_INIT_AS_TARGET */ | |
325 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
326 | #define PN533_INIT_TARGET_DEP 0x2 | |
327 | ||
fc40a8c1 SO |
328 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
329 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
330 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
331 | ||
ad3823ce SO |
332 | struct pn533_cmd_init_target { |
333 | u8 mode; | |
334 | u8 mifare[6]; | |
335 | u8 felica[18]; | |
336 | u8 nfcid3[10]; | |
337 | u8 gb_len; | |
338 | u8 gb[]; | |
339 | } __packed; | |
340 | ||
341 | struct pn533_cmd_init_target_response { | |
342 | u8 mode; | |
343 | u8 cmd[]; | |
344 | } __packed; | |
345 | ||
c46ee386 AAJ |
346 | struct pn533 { |
347 | struct usb_device *udev; | |
348 | struct usb_interface *interface; | |
349 | struct nfc_dev *nfc_dev; | |
350 | ||
351 | struct urb *out_urb; | |
352 | int out_maxlen; | |
353 | struct pn533_frame *out_frame; | |
354 | ||
355 | struct urb *in_urb; | |
356 | int in_maxlen; | |
357 | struct pn533_frame *in_frame; | |
358 | ||
6ff73fd2 SO |
359 | struct sk_buff_head resp_q; |
360 | ||
4849f85e SO |
361 | struct workqueue_struct *wq; |
362 | struct work_struct cmd_work; | |
5d50b364 | 363 | struct work_struct cmd_complete_work; |
6fbbdc16 | 364 | struct work_struct poll_work; |
6ff73fd2 | 365 | struct work_struct mi_work; |
103b34cf | 366 | struct work_struct tg_work; |
6fbbdc16 | 367 | struct timer_list listen_timer; |
4849f85e SO |
368 | struct pn533_frame *wq_in_frame; |
369 | int wq_in_error; | |
6fbbdc16 | 370 | int cancel_listen; |
c46ee386 AAJ |
371 | |
372 | pn533_cmd_complete_t cmd_complete; | |
373 | void *cmd_complete_arg; | |
0201ed03 | 374 | struct mutex cmd_lock; |
c46ee386 AAJ |
375 | u8 cmd; |
376 | ||
377 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
378 | u8 poll_mod_count; | |
379 | u8 poll_mod_curr; | |
380 | u32 poll_protocols; | |
6fbbdc16 SO |
381 | u32 listen_protocols; |
382 | ||
383 | u8 *gb; | |
384 | size_t gb_len; | |
c46ee386 AAJ |
385 | |
386 | u8 tgt_available_prots; | |
387 | u8 tgt_active_prot; | |
51ad304c | 388 | u8 tgt_mode; |
5c7b0531 SO |
389 | |
390 | u32 device_type; | |
5d50b364 SO |
391 | |
392 | struct list_head cmd_queue; | |
393 | u8 cmd_pending; | |
394 | }; | |
395 | ||
396 | struct pn533_cmd { | |
397 | struct list_head queue; | |
398 | struct pn533_frame *out_frame; | |
399 | struct pn533_frame *in_frame; | |
400 | int in_frame_len; | |
401 | pn533_cmd_complete_t cmd_complete; | |
402 | void *arg; | |
403 | gfp_t flags; | |
c46ee386 AAJ |
404 | }; |
405 | ||
406 | struct pn533_frame { | |
407 | u8 preamble; | |
408 | __be16 start_frame; | |
409 | u8 datalen; | |
410 | u8 datalen_checksum; | |
411 | u8 data[]; | |
412 | } __packed; | |
413 | ||
414 | /* The rule: value + checksum = 0 */ | |
415 | static inline u8 pn533_checksum(u8 value) | |
416 | { | |
417 | return ~value + 1; | |
418 | } | |
419 | ||
420 | /* The rule: sum(data elements) + checksum = 0 */ | |
421 | static u8 pn533_data_checksum(u8 *data, int datalen) | |
422 | { | |
423 | u8 sum = 0; | |
424 | int i; | |
425 | ||
426 | for (i = 0; i < datalen; i++) | |
427 | sum += data[i]; | |
428 | ||
429 | return pn533_checksum(sum); | |
430 | } | |
431 | ||
432 | /** | |
433 | * pn533_tx_frame_ack - create a ack frame | |
434 | * @frame: The frame to be set as ack | |
435 | * | |
436 | * Ack is different type of standard frame. As a standard frame, it has | |
437 | * preamble and start_frame. However the checksum of this frame must fail, | |
438 | * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test | |
439 | * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack. | |
440 | * After datalen_checksum field, the postamble is placed. | |
441 | */ | |
442 | static void pn533_tx_frame_ack(struct pn533_frame *frame) | |
443 | { | |
444 | frame->preamble = 0; | |
445 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
446 | frame->datalen = 0; | |
447 | frame->datalen_checksum = 0xFF; | |
448 | /* data[0] is used as postamble */ | |
449 | frame->data[0] = 0; | |
450 | } | |
451 | ||
452 | static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd) | |
453 | { | |
454 | frame->preamble = 0; | |
455 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
456 | PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT; | |
457 | PN533_FRAME_CMD(frame) = cmd; | |
458 | frame->datalen = 2; | |
459 | } | |
460 | ||
461 | static void pn533_tx_frame_finish(struct pn533_frame *frame) | |
462 | { | |
463 | frame->datalen_checksum = pn533_checksum(frame->datalen); | |
464 | ||
465 | PN533_FRAME_CHECKSUM(frame) = | |
466 | pn533_data_checksum(frame->data, frame->datalen); | |
467 | ||
468 | PN533_FRAME_POSTAMBLE(frame) = 0; | |
469 | } | |
470 | ||
471 | static bool pn533_rx_frame_is_valid(struct pn533_frame *frame) | |
472 | { | |
473 | u8 checksum; | |
474 | ||
475 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
476 | return false; | |
477 | ||
478 | checksum = pn533_checksum(frame->datalen); | |
479 | if (checksum != frame->datalen_checksum) | |
480 | return false; | |
481 | ||
482 | checksum = pn533_data_checksum(frame->data, frame->datalen); | |
483 | if (checksum != PN533_FRAME_CHECKSUM(frame)) | |
484 | return false; | |
485 | ||
486 | return true; | |
487 | } | |
488 | ||
489 | static bool pn533_rx_frame_is_ack(struct pn533_frame *frame) | |
490 | { | |
491 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
492 | return false; | |
493 | ||
494 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
495 | return false; | |
496 | ||
497 | return true; | |
498 | } | |
499 | ||
500 | static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd) | |
501 | { | |
502 | return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd)); | |
503 | } | |
504 | ||
4849f85e SO |
505 | |
506 | static void pn533_wq_cmd_complete(struct work_struct *work) | |
c46ee386 | 507 | { |
5d50b364 | 508 | struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); |
4849f85e | 509 | struct pn533_frame *in_frame; |
c46ee386 AAJ |
510 | int rc; |
511 | ||
4849f85e SO |
512 | in_frame = dev->wq_in_frame; |
513 | ||
514 | if (dev->wq_in_error) | |
c46ee386 | 515 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, NULL, |
4849f85e | 516 | dev->wq_in_error); |
c46ee386 AAJ |
517 | else |
518 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, | |
519 | PN533_FRAME_CMD_PARAMS_PTR(in_frame), | |
520 | PN533_FRAME_CMD_PARAMS_LEN(in_frame)); | |
521 | ||
522 | if (rc != -EINPROGRESS) | |
5d50b364 | 523 | queue_work(dev->wq, &dev->cmd_work); |
c46ee386 AAJ |
524 | } |
525 | ||
526 | static void pn533_recv_response(struct urb *urb) | |
527 | { | |
528 | struct pn533 *dev = urb->context; | |
529 | struct pn533_frame *in_frame; | |
530 | ||
4849f85e | 531 | dev->wq_in_frame = NULL; |
c46ee386 AAJ |
532 | |
533 | switch (urb->status) { | |
534 | case 0: | |
535 | /* success */ | |
536 | break; | |
537 | case -ECONNRESET: | |
538 | case -ENOENT: | |
539 | case -ESHUTDOWN: | |
540 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
541 | " status: %d", urb->status); | |
4849f85e SO |
542 | dev->wq_in_error = urb->status; |
543 | goto sched_wq; | |
c46ee386 AAJ |
544 | default: |
545 | nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:" | |
546 | " %d", urb->status); | |
4849f85e SO |
547 | dev->wq_in_error = urb->status; |
548 | goto sched_wq; | |
c46ee386 AAJ |
549 | } |
550 | ||
551 | in_frame = dev->in_urb->transfer_buffer; | |
552 | ||
553 | if (!pn533_rx_frame_is_valid(in_frame)) { | |
554 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); | |
4849f85e SO |
555 | dev->wq_in_error = -EIO; |
556 | goto sched_wq; | |
c46ee386 AAJ |
557 | } |
558 | ||
559 | if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) { | |
560 | nfc_dev_err(&dev->interface->dev, "The received frame is not " | |
561 | "response to the last command"); | |
4849f85e SO |
562 | dev->wq_in_error = -EIO; |
563 | goto sched_wq; | |
c46ee386 AAJ |
564 | } |
565 | ||
566 | nfc_dev_dbg(&dev->interface->dev, "Received a valid frame"); | |
4849f85e SO |
567 | dev->wq_in_error = 0; |
568 | dev->wq_in_frame = in_frame; | |
c46ee386 | 569 | |
4849f85e | 570 | sched_wq: |
5d50b364 | 571 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
572 | } |
573 | ||
574 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
575 | { | |
576 | dev->in_urb->complete = pn533_recv_response; | |
577 | ||
578 | return usb_submit_urb(dev->in_urb, flags); | |
579 | } | |
580 | ||
581 | static void pn533_recv_ack(struct urb *urb) | |
582 | { | |
583 | struct pn533 *dev = urb->context; | |
584 | struct pn533_frame *in_frame; | |
585 | int rc; | |
586 | ||
587 | switch (urb->status) { | |
588 | case 0: | |
589 | /* success */ | |
590 | break; | |
591 | case -ECONNRESET: | |
592 | case -ENOENT: | |
593 | case -ESHUTDOWN: | |
594 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
595 | " status: %d", urb->status); | |
4849f85e SO |
596 | dev->wq_in_error = urb->status; |
597 | goto sched_wq; | |
c46ee386 AAJ |
598 | default: |
599 | nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:" | |
600 | " %d", urb->status); | |
4849f85e SO |
601 | dev->wq_in_error = urb->status; |
602 | goto sched_wq; | |
c46ee386 AAJ |
603 | } |
604 | ||
605 | in_frame = dev->in_urb->transfer_buffer; | |
606 | ||
607 | if (!pn533_rx_frame_is_ack(in_frame)) { | |
608 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); | |
4849f85e SO |
609 | dev->wq_in_error = -EIO; |
610 | goto sched_wq; | |
c46ee386 AAJ |
611 | } |
612 | ||
613 | nfc_dev_dbg(&dev->interface->dev, "Received a valid ack"); | |
614 | ||
615 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); | |
616 | if (rc) { | |
617 | nfc_dev_err(&dev->interface->dev, "usb_submit_urb failed with" | |
618 | " result %d", rc); | |
4849f85e SO |
619 | dev->wq_in_error = rc; |
620 | goto sched_wq; | |
c46ee386 AAJ |
621 | } |
622 | ||
623 | return; | |
624 | ||
4849f85e SO |
625 | sched_wq: |
626 | dev->wq_in_frame = NULL; | |
5d50b364 | 627 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
628 | } |
629 | ||
630 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
631 | { | |
632 | dev->in_urb->complete = pn533_recv_ack; | |
633 | ||
634 | return usb_submit_urb(dev->in_urb, flags); | |
635 | } | |
636 | ||
637 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
638 | { | |
639 | int rc; | |
640 | ||
641 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
642 | ||
643 | pn533_tx_frame_ack(dev->out_frame); | |
644 | ||
645 | dev->out_urb->transfer_buffer = dev->out_frame; | |
646 | dev->out_urb->transfer_buffer_length = PN533_FRAME_ACK_SIZE; | |
647 | rc = usb_submit_urb(dev->out_urb, flags); | |
648 | ||
649 | return rc; | |
650 | } | |
651 | ||
652 | static int __pn533_send_cmd_frame_async(struct pn533 *dev, | |
653 | struct pn533_frame *out_frame, | |
654 | struct pn533_frame *in_frame, | |
655 | int in_frame_len, | |
656 | pn533_cmd_complete_t cmd_complete, | |
657 | void *arg, gfp_t flags) | |
658 | { | |
659 | int rc; | |
660 | ||
661 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", | |
662 | PN533_FRAME_CMD(out_frame)); | |
663 | ||
664 | dev->cmd = PN533_FRAME_CMD(out_frame); | |
665 | dev->cmd_complete = cmd_complete; | |
666 | dev->cmd_complete_arg = arg; | |
667 | ||
668 | dev->out_urb->transfer_buffer = out_frame; | |
669 | dev->out_urb->transfer_buffer_length = | |
670 | PN533_FRAME_SIZE(out_frame); | |
671 | ||
672 | dev->in_urb->transfer_buffer = in_frame; | |
673 | dev->in_urb->transfer_buffer_length = in_frame_len; | |
674 | ||
675 | rc = usb_submit_urb(dev->out_urb, flags); | |
676 | if (rc) | |
677 | return rc; | |
678 | ||
679 | rc = pn533_submit_urb_for_ack(dev, flags); | |
680 | if (rc) | |
681 | goto error; | |
682 | ||
683 | return 0; | |
684 | ||
685 | error: | |
686 | usb_unlink_urb(dev->out_urb); | |
687 | return rc; | |
688 | } | |
689 | ||
5d50b364 SO |
690 | static void pn533_wq_cmd(struct work_struct *work) |
691 | { | |
692 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); | |
693 | struct pn533_cmd *cmd; | |
694 | ||
695 | mutex_lock(&dev->cmd_lock); | |
696 | ||
697 | if (list_empty(&dev->cmd_queue)) { | |
698 | dev->cmd_pending = 0; | |
699 | mutex_unlock(&dev->cmd_lock); | |
700 | return; | |
701 | } | |
702 | ||
703 | cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); | |
704 | ||
60ad07ab SJ |
705 | list_del(&cmd->queue); |
706 | ||
5d50b364 SO |
707 | mutex_unlock(&dev->cmd_lock); |
708 | ||
709 | __pn533_send_cmd_frame_async(dev, cmd->out_frame, cmd->in_frame, | |
710 | cmd->in_frame_len, cmd->cmd_complete, | |
711 | cmd->arg, cmd->flags); | |
712 | ||
5d50b364 SO |
713 | kfree(cmd); |
714 | } | |
715 | ||
c46ee386 AAJ |
716 | static int pn533_send_cmd_frame_async(struct pn533 *dev, |
717 | struct pn533_frame *out_frame, | |
718 | struct pn533_frame *in_frame, | |
719 | int in_frame_len, | |
720 | pn533_cmd_complete_t cmd_complete, | |
721 | void *arg, gfp_t flags) | |
722 | { | |
5d50b364 | 723 | struct pn533_cmd *cmd; |
ee5e8d81 | 724 | int rc = 0; |
c46ee386 AAJ |
725 | |
726 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
727 | ||
5d50b364 | 728 | mutex_lock(&dev->cmd_lock); |
c46ee386 | 729 | |
5d50b364 SO |
730 | if (!dev->cmd_pending) { |
731 | rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame, | |
732 | in_frame_len, cmd_complete, | |
733 | arg, flags); | |
734 | if (!rc) | |
735 | dev->cmd_pending = 1; | |
736 | ||
ee5e8d81 | 737 | goto unlock; |
5d50b364 SO |
738 | } |
739 | ||
740 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__); | |
741 | ||
742 | cmd = kzalloc(sizeof(struct pn533_cmd), flags); | |
ee5e8d81 SJ |
743 | if (!cmd) { |
744 | rc = -ENOMEM; | |
745 | goto unlock; | |
746 | } | |
5d50b364 SO |
747 | |
748 | INIT_LIST_HEAD(&cmd->queue); | |
749 | cmd->out_frame = out_frame; | |
750 | cmd->in_frame = in_frame; | |
751 | cmd->in_frame_len = in_frame_len; | |
752 | cmd->cmd_complete = cmd_complete; | |
753 | cmd->arg = arg; | |
754 | cmd->flags = flags; | |
755 | ||
756 | list_add_tail(&cmd->queue, &dev->cmd_queue); | |
c46ee386 | 757 | |
ee5e8d81 | 758 | unlock: |
0201ed03 | 759 | mutex_unlock(&dev->cmd_lock); |
5d50b364 | 760 | |
ee5e8d81 | 761 | return rc; |
c46ee386 AAJ |
762 | } |
763 | ||
764 | struct pn533_sync_cmd_response { | |
765 | int rc; | |
766 | struct completion done; | |
767 | }; | |
768 | ||
769 | static int pn533_sync_cmd_complete(struct pn533 *dev, void *_arg, | |
770 | u8 *params, int params_len) | |
771 | { | |
772 | struct pn533_sync_cmd_response *arg = _arg; | |
773 | ||
774 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
775 | ||
776 | arg->rc = 0; | |
777 | ||
778 | if (params_len < 0) /* error */ | |
779 | arg->rc = params_len; | |
780 | ||
781 | complete(&arg->done); | |
782 | ||
783 | return 0; | |
784 | } | |
785 | ||
786 | static int pn533_send_cmd_frame_sync(struct pn533 *dev, | |
787 | struct pn533_frame *out_frame, | |
788 | struct pn533_frame *in_frame, | |
789 | int in_frame_len) | |
790 | { | |
791 | int rc; | |
792 | struct pn533_sync_cmd_response arg; | |
793 | ||
794 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
795 | ||
796 | init_completion(&arg.done); | |
797 | ||
798 | rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, in_frame_len, | |
799 | pn533_sync_cmd_complete, &arg, GFP_KERNEL); | |
800 | if (rc) | |
801 | return rc; | |
802 | ||
803 | wait_for_completion(&arg.done); | |
804 | ||
805 | return arg.rc; | |
806 | } | |
807 | ||
808 | static void pn533_send_complete(struct urb *urb) | |
809 | { | |
810 | struct pn533 *dev = urb->context; | |
811 | ||
812 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
813 | ||
814 | switch (urb->status) { | |
815 | case 0: | |
816 | /* success */ | |
817 | break; | |
818 | case -ECONNRESET: | |
819 | case -ENOENT: | |
820 | case -ESHUTDOWN: | |
821 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
822 | " status: %d", urb->status); | |
823 | break; | |
824 | default: | |
825 | nfc_dev_dbg(&dev->interface->dev, "Nonzero urb status received:" | |
826 | " %d", urb->status); | |
827 | } | |
828 | } | |
829 | ||
830 | struct pn533_target_type_a { | |
831 | __be16 sens_res; | |
832 | u8 sel_res; | |
833 | u8 nfcid_len; | |
834 | u8 nfcid_data[]; | |
835 | } __packed; | |
836 | ||
837 | ||
838 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
839 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
840 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
841 | ||
842 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
843 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
844 | ||
845 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
846 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
847 | ||
848 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
849 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
850 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
851 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
852 | ||
853 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
854 | int target_data_len) | |
855 | { | |
856 | u8 ssd; | |
857 | u8 platconf; | |
858 | ||
859 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
860 | return false; | |
861 | ||
862 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
863 | the values are not being used */ | |
864 | ||
865 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
866 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
867 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
868 | ||
869 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
870 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || | |
871 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
872 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
873 | return false; | |
874 | ||
875 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
876 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
877 | return false; | |
878 | ||
879 | return true; | |
880 | } | |
881 | ||
882 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
883 | int tgt_data_len) | |
884 | { | |
885 | struct pn533_target_type_a *tgt_type_a; | |
886 | ||
887 | tgt_type_a = (struct pn533_target_type_a *) tgt_data; | |
888 | ||
889 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
890 | return -EPROTO; | |
891 | ||
892 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
893 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
894 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
895 | break; | |
896 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
897 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
898 | break; | |
899 | case PN533_TYPE_A_SEL_PROT_DEP: | |
900 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
901 | break; | |
902 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
903 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
904 | NFC_PROTO_NFC_DEP_MASK; | |
905 | break; | |
906 | } | |
907 | ||
908 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
909 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
910 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
911 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
912 | |
913 | return 0; | |
914 | } | |
915 | ||
916 | struct pn533_target_felica { | |
917 | u8 pol_res; | |
918 | u8 opcode; | |
919 | u8 nfcid2[8]; | |
920 | u8 pad[8]; | |
921 | /* optional */ | |
922 | u8 syst_code[]; | |
923 | } __packed; | |
924 | ||
925 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
926 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
927 | ||
928 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
929 | int target_data_len) | |
930 | { | |
931 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
932 | return false; | |
933 | ||
934 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
935 | return false; | |
936 | ||
937 | return true; | |
938 | } | |
939 | ||
940 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
941 | int tgt_data_len) | |
942 | { | |
943 | struct pn533_target_felica *tgt_felica; | |
944 | ||
945 | tgt_felica = (struct pn533_target_felica *) tgt_data; | |
946 | ||
947 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
948 | return -EPROTO; | |
949 | ||
950 | if (tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1 && | |
951 | tgt_felica->nfcid2[1] == | |
952 | PN533_FELICA_SENSF_NFCID2_DEP_B2) | |
953 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
954 | else | |
955 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
956 | ||
7975754f SO |
957 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
958 | nfc_tgt->sensf_res_len = 9; | |
959 | ||
c46ee386 AAJ |
960 | return 0; |
961 | } | |
962 | ||
963 | struct pn533_target_jewel { | |
964 | __be16 sens_res; | |
965 | u8 jewelid[4]; | |
966 | } __packed; | |
967 | ||
968 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
969 | int target_data_len) | |
970 | { | |
971 | u8 ssd; | |
972 | u8 platconf; | |
973 | ||
974 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
975 | return false; | |
976 | ||
977 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
978 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
979 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
980 | ||
981 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
982 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || | |
983 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
984 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
985 | return false; | |
986 | ||
987 | return true; | |
988 | } | |
989 | ||
990 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
991 | int tgt_data_len) | |
992 | { | |
993 | struct pn533_target_jewel *tgt_jewel; | |
994 | ||
995 | tgt_jewel = (struct pn533_target_jewel *) tgt_data; | |
996 | ||
997 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
998 | return -EPROTO; | |
999 | ||
1000 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
1001 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
1002 | nfc_tgt->nfcid1_len = 4; |
1003 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1004 | |
1005 | return 0; | |
1006 | } | |
1007 | ||
1008 | struct pn533_type_b_prot_info { | |
1009 | u8 bitrate; | |
1010 | u8 fsci_type; | |
1011 | u8 fwi_adc_fo; | |
1012 | } __packed; | |
1013 | ||
1014 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
1015 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
1016 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
1017 | ||
1018 | struct pn533_type_b_sens_res { | |
1019 | u8 opcode; | |
1020 | u8 nfcid[4]; | |
1021 | u8 appdata[4]; | |
1022 | struct pn533_type_b_prot_info prot_info; | |
1023 | } __packed; | |
1024 | ||
1025 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
1026 | ||
1027 | struct pn533_target_type_b { | |
1028 | struct pn533_type_b_sens_res sensb_res; | |
1029 | u8 attrib_res_len; | |
1030 | u8 attrib_res[]; | |
1031 | } __packed; | |
1032 | ||
1033 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
1034 | int target_data_len) | |
1035 | { | |
1036 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
1037 | return false; | |
1038 | ||
1039 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
1040 | return false; | |
1041 | ||
1042 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
1043 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
1044 | return false; | |
1045 | ||
1046 | return true; | |
1047 | } | |
1048 | ||
1049 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1050 | int tgt_data_len) | |
1051 | { | |
1052 | struct pn533_target_type_b *tgt_type_b; | |
1053 | ||
1054 | tgt_type_b = (struct pn533_target_type_b *) tgt_data; | |
1055 | ||
1056 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
1057 | return -EPROTO; | |
1058 | ||
01d719a2 | 1059 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
1060 | |
1061 | return 0; | |
1062 | } | |
1063 | ||
1064 | struct pn533_poll_response { | |
1065 | u8 nbtg; | |
1066 | u8 tg; | |
1067 | u8 target_data[]; | |
1068 | } __packed; | |
1069 | ||
1070 | static int pn533_target_found(struct pn533 *dev, | |
1071 | struct pn533_poll_response *resp, int resp_len) | |
1072 | { | |
1073 | int target_data_len; | |
1074 | struct nfc_target nfc_tgt; | |
1075 | int rc; | |
1076 | ||
1077 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
1078 | dev->poll_mod_curr); | |
1079 | ||
1080 | if (resp->tg != 1) | |
1081 | return -EPROTO; | |
1082 | ||
98b3ac1b SO |
1083 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1084 | ||
c46ee386 AAJ |
1085 | target_data_len = resp_len - sizeof(struct pn533_poll_response); |
1086 | ||
1087 | switch (dev->poll_mod_curr) { | |
1088 | case PN533_POLL_MOD_106KBPS_A: | |
1089 | rc = pn533_target_found_type_a(&nfc_tgt, resp->target_data, | |
1090 | target_data_len); | |
1091 | break; | |
1092 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1093 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1094 | rc = pn533_target_found_felica(&nfc_tgt, resp->target_data, | |
1095 | target_data_len); | |
1096 | break; | |
1097 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
1098 | rc = pn533_target_found_jewel(&nfc_tgt, resp->target_data, | |
1099 | target_data_len); | |
1100 | break; | |
1101 | case PN533_POLL_MOD_847KBPS_B: | |
1102 | rc = pn533_target_found_type_b(&nfc_tgt, resp->target_data, | |
1103 | target_data_len); | |
1104 | break; | |
1105 | default: | |
1106 | nfc_dev_err(&dev->interface->dev, "Unknown current poll" | |
1107 | " modulation"); | |
1108 | return -EPROTO; | |
1109 | } | |
1110 | ||
1111 | if (rc) | |
1112 | return rc; | |
1113 | ||
1114 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
1115 | nfc_dev_dbg(&dev->interface->dev, "The target found does not" | |
1116 | " have the desired protocol"); | |
1117 | return -EAGAIN; | |
1118 | } | |
1119 | ||
1120 | nfc_dev_dbg(&dev->interface->dev, "Target found - supported protocols: " | |
1121 | "0x%x", nfc_tgt.supported_protocols); | |
1122 | ||
1123 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1124 | ||
1125 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1126 | ||
1127 | return 0; | |
1128 | } | |
1129 | ||
6fbbdc16 SO |
1130 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1131 | { | |
1132 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1133 | } | |
1134 | ||
c46ee386 AAJ |
1135 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1136 | { | |
1137 | dev->poll_mod_count = 0; | |
1138 | } | |
1139 | ||
1140 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1141 | { | |
1142 | dev->poll_mod_active[dev->poll_mod_count] = | |
1143 | (struct pn533_poll_modulations *) &poll_mod[mod_index]; | |
1144 | dev->poll_mod_count++; | |
1145 | } | |
1146 | ||
6fbbdc16 SO |
1147 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1148 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1149 | { |
1150 | pn533_poll_reset_mod_list(dev); | |
1151 | ||
6fbbdc16 SO |
1152 | if (im_protocols & NFC_PROTO_MIFARE_MASK |
1153 | || im_protocols & NFC_PROTO_ISO14443_MASK | |
1154 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) | |
c46ee386 AAJ |
1155 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1156 | ||
6fbbdc16 SO |
1157 | if (im_protocols & NFC_PROTO_FELICA_MASK |
1158 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1159 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1160 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1161 | } | |
1162 | ||
6fbbdc16 | 1163 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1164 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1165 | ||
01d719a2 | 1166 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1167 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1168 | |
6fbbdc16 SO |
1169 | if (tm_protocols) |
1170 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1171 | } |
1172 | ||
ab34a181 | 1173 | static int pn533_start_poll_complete(struct pn533 *dev, u8 *params, int params_len) |
c46ee386 AAJ |
1174 | { |
1175 | struct pn533_poll_response *resp; | |
c46ee386 AAJ |
1176 | int rc; |
1177 | ||
1178 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1179 | ||
c46ee386 AAJ |
1180 | resp = (struct pn533_poll_response *) params; |
1181 | if (resp->nbtg) { | |
1182 | rc = pn533_target_found(dev, resp, params_len); | |
1183 | ||
1184 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1185 | if (rc == 0) { |
1186 | pn533_poll_reset_mod_list(dev); | |
1187 | return 0; | |
1188 | } | |
c46ee386 AAJ |
1189 | } |
1190 | ||
6fbbdc16 | 1191 | return -EAGAIN; |
c46ee386 AAJ |
1192 | } |
1193 | ||
ad3823ce SO |
1194 | static int pn533_init_target_frame(struct pn533_frame *frame, |
1195 | u8 *gb, size_t gb_len) | |
1196 | { | |
1197 | struct pn533_cmd_init_target *cmd; | |
1198 | size_t cmd_len; | |
51d9e803 SO |
1199 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1200 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1201 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1202 | 0xff, 0xff}; /* System code */ | |
1203 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ | |
1204 | 0x0, 0x0, 0x0, | |
1205 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce SO |
1206 | |
1207 | cmd_len = sizeof(struct pn533_cmd_init_target) + gb_len + 1; | |
1208 | cmd = kzalloc(cmd_len, GFP_KERNEL); | |
1209 | if (cmd == NULL) | |
1210 | return -ENOMEM; | |
1211 | ||
1212 | pn533_tx_frame_init(frame, PN533_CMD_TG_INIT_AS_TARGET); | |
1213 | ||
1214 | /* DEP support only */ | |
1215 | cmd->mode |= PN533_INIT_TARGET_DEP; | |
51d9e803 SO |
1216 | |
1217 | /* Felica params */ | |
1218 | memcpy(cmd->felica, felica_params, 18); | |
1219 | get_random_bytes(cmd->felica + 2, 6); | |
1220 | ||
1221 | /* NFCID3 */ | |
1222 | memset(cmd->nfcid3, 0, 10); | |
1223 | memcpy(cmd->nfcid3, cmd->felica, 8); | |
1224 | ||
1225 | /* MIFARE params */ | |
1226 | memcpy(cmd->mifare, mifare_params, 6); | |
1227 | ||
1228 | /* General bytes */ | |
ad3823ce SO |
1229 | cmd->gb_len = gb_len; |
1230 | memcpy(cmd->gb, gb, gb_len); | |
51d9e803 | 1231 | |
ad3823ce SO |
1232 | /* Len Tk */ |
1233 | cmd->gb[gb_len] = 0; | |
1234 | ||
1235 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), cmd, cmd_len); | |
51d9e803 | 1236 | |
ad3823ce SO |
1237 | frame->datalen += cmd_len; |
1238 | ||
1239 | pn533_tx_frame_finish(frame); | |
1240 | ||
51d9e803 SO |
1241 | kfree(cmd); |
1242 | ||
ad3823ce SO |
1243 | return 0; |
1244 | } | |
1245 | ||
103b34cf SO |
1246 | #define PN533_CMD_DATAEXCH_HEAD_LEN (sizeof(struct pn533_frame) + 3) |
1247 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 | |
1248 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
1249 | u8 *params, int params_len) | |
1250 | { | |
1251 | struct sk_buff *skb_resp = arg; | |
1252 | struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data; | |
1253 | ||
1254 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1255 | ||
1256 | if (params_len < 0) { | |
1257 | nfc_dev_err(&dev->interface->dev, | |
1258 | "Error %d when starting as a target", | |
1259 | params_len); | |
1260 | ||
1261 | return params_len; | |
1262 | } | |
1263 | ||
1264 | if (params_len > 0 && params[0] != 0) { | |
1265 | nfc_tm_deactivated(dev->nfc_dev); | |
1266 | ||
51ad304c SO |
1267 | dev->tgt_mode = 0; |
1268 | ||
103b34cf SO |
1269 | kfree_skb(skb_resp); |
1270 | return 0; | |
1271 | } | |
1272 | ||
1273 | skb_put(skb_resp, PN533_FRAME_SIZE(in_frame)); | |
1274 | skb_pull(skb_resp, PN533_CMD_DATAEXCH_HEAD_LEN); | |
1275 | skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_SIZE); | |
1276 | ||
1277 | return nfc_tm_data_received(dev->nfc_dev, skb_resp); | |
1278 | } | |
1279 | ||
1280 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1281 | { | |
1282 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
1283 | struct pn533_frame *in_frame; | |
1284 | struct sk_buff *skb_resp; | |
1285 | size_t skb_resp_len; | |
1286 | ||
1287 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1288 | ||
1289 | skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN + | |
1290 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
1291 | PN533_FRAME_TAIL_SIZE; | |
1292 | ||
1293 | skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL); | |
1294 | if (!skb_resp) | |
1295 | return; | |
1296 | ||
1297 | in_frame = (struct pn533_frame *)skb_resp->data; | |
1298 | ||
1299 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_TG_GET_DATA); | |
1300 | pn533_tx_frame_finish(dev->out_frame); | |
1301 | ||
1302 | pn533_send_cmd_frame_async(dev, dev->out_frame, in_frame, | |
1303 | skb_resp_len, | |
1304 | pn533_tm_get_data_complete, | |
1305 | skb_resp, GFP_KERNEL); | |
1306 | ||
1307 | return; | |
1308 | } | |
1309 | ||
fc40a8c1 | 1310 | #define ATR_REQ_GB_OFFSET 17 |
ab34a181 | 1311 | static int pn533_init_target_complete(struct pn533 *dev, u8 *params, int params_len) |
fe7c5800 | 1312 | { |
ad3823ce | 1313 | struct pn533_cmd_init_target_response *resp; |
fc40a8c1 SO |
1314 | u8 frame, comm_mode = NFC_COMM_PASSIVE, *gb; |
1315 | size_t gb_len; | |
103b34cf | 1316 | int rc; |
ad3823ce SO |
1317 | |
1318 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1319 | ||
1320 | if (params_len < 0) { | |
1321 | nfc_dev_err(&dev->interface->dev, | |
1322 | "Error %d when starting as a target", | |
1323 | params_len); | |
1324 | ||
1325 | return params_len; | |
1326 | } | |
1327 | ||
fc40a8c1 SO |
1328 | if (params_len < ATR_REQ_GB_OFFSET + 1) |
1329 | return -EINVAL; | |
1330 | ||
ad3823ce SO |
1331 | resp = (struct pn533_cmd_init_target_response *) params; |
1332 | ||
fc40a8c1 SO |
1333 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x param len %d\n", |
1334 | resp->mode, params_len); | |
ad3823ce | 1335 | |
fc40a8c1 SO |
1336 | frame = resp->mode & PN533_INIT_TARGET_RESP_FRAME_MASK; |
1337 | if (frame == PN533_INIT_TARGET_RESP_ACTIVE) | |
1338 | comm_mode = NFC_COMM_ACTIVE; | |
1339 | ||
1340 | /* Again, only DEP */ | |
1341 | if ((resp->mode & PN533_INIT_TARGET_RESP_DEP) == 0) | |
1342 | return -EOPNOTSUPP; | |
1343 | ||
1344 | gb = resp->cmd + ATR_REQ_GB_OFFSET; | |
1345 | gb_len = params_len - (ATR_REQ_GB_OFFSET + 1); | |
1346 | ||
103b34cf SO |
1347 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1348 | comm_mode, gb, gb_len); | |
1349 | if (rc < 0) { | |
1350 | nfc_dev_err(&dev->interface->dev, | |
1351 | "Error when signaling target activation"); | |
1352 | return rc; | |
1353 | } | |
1354 | ||
51ad304c SO |
1355 | dev->tgt_mode = 1; |
1356 | ||
103b34cf SO |
1357 | queue_work(dev->wq, &dev->tg_work); |
1358 | ||
1359 | return 0; | |
fe7c5800 SO |
1360 | } |
1361 | ||
6fbbdc16 | 1362 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1363 | { |
6fbbdc16 SO |
1364 | struct pn533 *dev = (struct pn533 *) data; |
1365 | ||
1366 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1367 | ||
1368 | /* An ack will cancel the last issued command (poll) */ | |
1369 | pn533_send_ack(dev, GFP_ATOMIC); | |
1370 | ||
1371 | dev->cancel_listen = 1; | |
1372 | ||
6fbbdc16 SO |
1373 | pn533_poll_next_mod(dev); |
1374 | ||
1375 | queue_work(dev->wq, &dev->poll_work); | |
1376 | } | |
1377 | ||
1378 | static int pn533_poll_complete(struct pn533 *dev, void *arg, | |
1379 | u8 *params, int params_len) | |
1380 | { | |
1381 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1382 | int rc; |
1383 | ||
6fbbdc16 | 1384 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1385 | |
6fbbdc16 SO |
1386 | if (params_len == -ENOENT) { |
1387 | if (dev->poll_mod_count != 0) | |
1388 | return 0; | |
ad3823ce | 1389 | |
6fbbdc16 SO |
1390 | nfc_dev_err(&dev->interface->dev, |
1391 | "Polling operation has been stopped"); | |
ad3823ce | 1392 | |
6fbbdc16 SO |
1393 | goto stop_poll; |
1394 | } | |
ad3823ce | 1395 | |
6fbbdc16 | 1396 | if (params_len < 0) { |
ad3823ce | 1397 | nfc_dev_err(&dev->interface->dev, |
6fbbdc16 | 1398 | "Error %d when running poll", params_len); |
ad3823ce | 1399 | |
6fbbdc16 SO |
1400 | goto stop_poll; |
1401 | } | |
ad3823ce | 1402 | |
6fbbdc16 SO |
1403 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1404 | ||
1405 | if (cur_mod->len == 0) { | |
1406 | del_timer(&dev->listen_timer); | |
1407 | ||
ab34a181 | 1408 | return pn533_init_target_complete(dev, params, params_len); |
6fbbdc16 | 1409 | } else { |
ab34a181 | 1410 | rc = pn533_start_poll_complete(dev, params, params_len); |
6fbbdc16 SO |
1411 | if (!rc) |
1412 | return rc; | |
1413 | } | |
1414 | ||
1415 | pn533_poll_next_mod(dev); | |
1416 | ||
1417 | queue_work(dev->wq, &dev->poll_work); | |
1418 | ||
1419 | return 0; | |
1420 | ||
1421 | stop_poll: | |
1422 | pn533_poll_reset_mod_list(dev); | |
1423 | dev->poll_protocols = 0; | |
1424 | return 0; | |
ad3823ce SO |
1425 | } |
1426 | ||
6fbbdc16 SO |
1427 | static void pn533_build_poll_frame(struct pn533 *dev, |
1428 | struct pn533_frame *frame, | |
1429 | struct pn533_poll_modulations *mod) | |
c46ee386 | 1430 | { |
6fbbdc16 | 1431 | nfc_dev_dbg(&dev->interface->dev, "mod len %d\n", mod->len); |
c46ee386 | 1432 | |
6fbbdc16 SO |
1433 | if (mod->len == 0) { |
1434 | /* Listen mode */ | |
1435 | pn533_init_target_frame(frame, dev->gb, dev->gb_len); | |
1436 | } else { | |
1437 | /* Polling mode */ | |
1438 | pn533_tx_frame_init(frame, PN533_CMD_IN_LIST_PASSIVE_TARGET); | |
c46ee386 | 1439 | |
6fbbdc16 SO |
1440 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), &mod->data, mod->len); |
1441 | frame->datalen += mod->len; | |
c46ee386 | 1442 | |
6fbbdc16 | 1443 | pn533_tx_frame_finish(frame); |
c46ee386 | 1444 | } |
6fbbdc16 | 1445 | } |
c46ee386 | 1446 | |
6fbbdc16 SO |
1447 | static int pn533_send_poll_frame(struct pn533 *dev) |
1448 | { | |
1449 | struct pn533_poll_modulations *cur_mod; | |
1450 | int rc; | |
c46ee386 | 1451 | |
6fbbdc16 | 1452 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1453 | |
6fbbdc16 | 1454 | pn533_build_poll_frame(dev, dev->out_frame, cur_mod); |
c46ee386 AAJ |
1455 | |
1456 | rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame, | |
6fbbdc16 | 1457 | dev->in_maxlen, pn533_poll_complete, |
c46ee386 | 1458 | NULL, GFP_KERNEL); |
6fbbdc16 SO |
1459 | if (rc) |
1460 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); | |
c46ee386 | 1461 | |
6fbbdc16 SO |
1462 | return rc; |
1463 | } | |
1464 | ||
1465 | static void pn533_wq_poll(struct work_struct *work) | |
1466 | { | |
1467 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1468 | struct pn533_poll_modulations *cur_mod; | |
1469 | int rc; | |
1470 | ||
1471 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1472 | ||
1473 | nfc_dev_dbg(&dev->interface->dev, | |
1474 | "%s cancel_listen %d modulation len %d", | |
1475 | __func__, dev->cancel_listen, cur_mod->len); | |
1476 | ||
1477 | if (dev->cancel_listen == 1) { | |
1478 | dev->cancel_listen = 0; | |
1479 | usb_kill_urb(dev->in_urb); | |
c46ee386 AAJ |
1480 | } |
1481 | ||
6fbbdc16 SO |
1482 | rc = pn533_send_poll_frame(dev); |
1483 | if (rc) | |
1484 | return; | |
c46ee386 | 1485 | |
6fbbdc16 SO |
1486 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1487 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1488 | |
6fbbdc16 | 1489 | return; |
c46ee386 AAJ |
1490 | } |
1491 | ||
fe7c5800 SO |
1492 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1493 | u32 im_protocols, u32 tm_protocols) | |
1494 | { | |
1495 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1496 | ||
1497 | nfc_dev_dbg(&dev->interface->dev, | |
1498 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1499 | __func__, im_protocols, tm_protocols); | |
1500 | ||
1501 | if (dev->tgt_active_prot) { | |
1502 | nfc_dev_err(&dev->interface->dev, | |
1503 | "Cannot poll with a target already activated"); | |
1504 | return -EBUSY; | |
1505 | } | |
1506 | ||
51ad304c SO |
1507 | if (dev->tgt_mode) { |
1508 | nfc_dev_err(&dev->interface->dev, | |
1509 | "Cannot poll while already being activated"); | |
1510 | return -EBUSY; | |
1511 | } | |
1512 | ||
6fbbdc16 SO |
1513 | if (tm_protocols) { |
1514 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1515 | if (dev->gb == NULL) | |
1516 | tm_protocols = 0; | |
1517 | } | |
ad3823ce | 1518 | |
6fbbdc16 SO |
1519 | dev->poll_mod_curr = 0; |
1520 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1521 | dev->poll_protocols = im_protocols; | |
1522 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1523 | |
6fbbdc16 | 1524 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1525 | } |
1526 | ||
c46ee386 AAJ |
1527 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1528 | { | |
1529 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1530 | ||
1531 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1532 | ||
6fbbdc16 SO |
1533 | del_timer(&dev->listen_timer); |
1534 | ||
c46ee386 AAJ |
1535 | if (!dev->poll_mod_count) { |
1536 | nfc_dev_dbg(&dev->interface->dev, "Polling operation was not" | |
1537 | " running"); | |
1538 | return; | |
1539 | } | |
1540 | ||
1541 | /* An ack will cancel the last issued command (poll) */ | |
1542 | pn533_send_ack(dev, GFP_KERNEL); | |
1543 | ||
1544 | /* prevent pn533_start_poll_complete to issue a new poll meanwhile */ | |
1545 | usb_kill_urb(dev->in_urb); | |
7c2a04a9 SO |
1546 | |
1547 | pn533_poll_reset_mod_list(dev); | |
c46ee386 AAJ |
1548 | } |
1549 | ||
1550 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1551 | { | |
1552 | struct pn533_cmd_activate_param param; | |
1553 | struct pn533_cmd_activate_response *resp; | |
541d920b | 1554 | u16 gt_len; |
c46ee386 AAJ |
1555 | int rc; |
1556 | ||
1557 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1558 | ||
1559 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_ATR); | |
1560 | ||
1561 | param.tg = 1; | |
1562 | param.next = 0; | |
1563 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), ¶m, | |
1564 | sizeof(struct pn533_cmd_activate_param)); | |
1565 | dev->out_frame->datalen += sizeof(struct pn533_cmd_activate_param); | |
1566 | ||
1567 | pn533_tx_frame_finish(dev->out_frame); | |
1568 | ||
1569 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
1570 | dev->in_maxlen); | |
1571 | if (rc) | |
1572 | return rc; | |
1573 | ||
1574 | resp = (struct pn533_cmd_activate_response *) | |
1575 | PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame); | |
1576 | rc = resp->status & PN533_CMD_RET_MASK; | |
1577 | if (rc != PN533_CMD_RET_SUCCESS) | |
1578 | return -EIO; | |
1579 | ||
541d920b SO |
1580 | /* ATR_RES general bytes are located at offset 16 */ |
1581 | gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 16; | |
1582 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, resp->gt, gt_len); | |
1583 | ||
1584 | return rc; | |
c46ee386 AAJ |
1585 | } |
1586 | ||
90099433 EL |
1587 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1588 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1589 | { |
1590 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1591 | int rc; | |
1592 | ||
1593 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
1594 | protocol); | |
1595 | ||
1596 | if (dev->poll_mod_count) { | |
1597 | nfc_dev_err(&dev->interface->dev, "Cannot activate while" | |
1598 | " polling"); | |
1599 | return -EBUSY; | |
1600 | } | |
1601 | ||
1602 | if (dev->tgt_active_prot) { | |
1603 | nfc_dev_err(&dev->interface->dev, "There is already an active" | |
1604 | " target"); | |
1605 | return -EBUSY; | |
1606 | } | |
1607 | ||
1608 | if (!dev->tgt_available_prots) { | |
1609 | nfc_dev_err(&dev->interface->dev, "There is no available target" | |
1610 | " to activate"); | |
1611 | return -EINVAL; | |
1612 | } | |
1613 | ||
1614 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
1615 | nfc_dev_err(&dev->interface->dev, "The target does not support" | |
1616 | " the requested protocol %u", protocol); | |
1617 | return -EINVAL; | |
1618 | } | |
1619 | ||
1620 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1621 | rc = pn533_activate_target_nfcdep(dev); | |
1622 | if (rc) { | |
1623 | nfc_dev_err(&dev->interface->dev, "Error %d when" | |
1624 | " activating target with" | |
1625 | " NFC_DEP protocol", rc); | |
1626 | return rc; | |
1627 | } | |
1628 | } | |
1629 | ||
1630 | dev->tgt_active_prot = protocol; | |
1631 | dev->tgt_available_prots = 0; | |
1632 | ||
1633 | return 0; | |
1634 | } | |
1635 | ||
90099433 EL |
1636 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1637 | struct nfc_target *target) | |
c46ee386 AAJ |
1638 | { |
1639 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1640 | u8 tg; | |
1641 | u8 status; | |
1642 | int rc; | |
1643 | ||
1644 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1645 | ||
1646 | if (!dev->tgt_active_prot) { | |
1647 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
1648 | return; | |
1649 | } | |
1650 | ||
1651 | dev->tgt_active_prot = 0; | |
1652 | ||
6ff73fd2 SO |
1653 | skb_queue_purge(&dev->resp_q); |
1654 | ||
c46ee386 AAJ |
1655 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_RELEASE); |
1656 | ||
1657 | tg = 1; | |
1658 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), &tg, sizeof(u8)); | |
1659 | dev->out_frame->datalen += sizeof(u8); | |
1660 | ||
1661 | pn533_tx_frame_finish(dev->out_frame); | |
1662 | ||
1663 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
1664 | dev->in_maxlen); | |
1665 | if (rc) { | |
1666 | nfc_dev_err(&dev->interface->dev, "Error when sending release" | |
1667 | " command to the controller"); | |
1668 | return; | |
1669 | } | |
1670 | ||
1671 | status = PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame)[0]; | |
1672 | rc = status & PN533_CMD_RET_MASK; | |
1673 | if (rc != PN533_CMD_RET_SUCCESS) | |
1674 | nfc_dev_err(&dev->interface->dev, "Error 0x%x when releasing" | |
1675 | " the target", rc); | |
1676 | ||
1677 | return; | |
1678 | } | |
1679 | ||
361f3cb7 SO |
1680 | |
1681 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
1682 | u8 *params, int params_len) | |
1683 | { | |
361f3cb7 SO |
1684 | struct pn533_cmd_jump_dep_response *resp; |
1685 | struct nfc_target nfc_target; | |
1686 | u8 target_gt_len; | |
1687 | int rc; | |
70418e6e WR |
1688 | struct pn533_cmd_jump_dep *cmd = (struct pn533_cmd_jump_dep *)arg; |
1689 | u8 active = cmd->active; | |
1690 | ||
1691 | kfree(arg); | |
361f3cb7 SO |
1692 | |
1693 | if (params_len == -ENOENT) { | |
1694 | nfc_dev_dbg(&dev->interface->dev, ""); | |
1695 | return 0; | |
1696 | } | |
1697 | ||
1698 | if (params_len < 0) { | |
1699 | nfc_dev_err(&dev->interface->dev, | |
1700 | "Error %d when bringing DEP link up", | |
1701 | params_len); | |
1702 | return 0; | |
1703 | } | |
1704 | ||
1705 | if (dev->tgt_available_prots && | |
1706 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
1707 | nfc_dev_err(&dev->interface->dev, | |
1708 | "The target does not support DEP"); | |
1709 | return -EINVAL; | |
1710 | } | |
1711 | ||
1712 | resp = (struct pn533_cmd_jump_dep_response *) params; | |
361f3cb7 SO |
1713 | rc = resp->status & PN533_CMD_RET_MASK; |
1714 | if (rc != PN533_CMD_RET_SUCCESS) { | |
1715 | nfc_dev_err(&dev->interface->dev, | |
1716 | "Bringing DEP link up failed %d", rc); | |
1717 | return 0; | |
1718 | } | |
1719 | ||
1720 | if (!dev->tgt_available_prots) { | |
1721 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); | |
1722 | ||
1723 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 SO |
1724 | nfc_target.nfcid1_len = 10; |
1725 | memcpy(nfc_target.nfcid1, resp->nfcid3t, nfc_target.nfcid1_len); | |
361f3cb7 SO |
1726 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
1727 | if (rc) | |
1728 | return 0; | |
1729 | ||
1730 | dev->tgt_available_prots = 0; | |
1731 | } | |
1732 | ||
1733 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
1734 | ||
1735 | /* ATR_RES general bytes are located at offset 17 */ | |
1736 | target_gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 17; | |
1737 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, | |
1738 | resp->gt, target_gt_len); | |
1739 | if (rc == 0) | |
1740 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
1741 | dev->nfc_dev->targets[0].idx, | |
70418e6e | 1742 | !active, NFC_RF_INITIATOR); |
361f3cb7 SO |
1743 | |
1744 | return 0; | |
1745 | } | |
1746 | ||
41a8ec49 SO |
1747 | static int pn533_mod_to_baud(struct pn533 *dev) |
1748 | { | |
1749 | switch (dev->poll_mod_curr) { | |
1750 | case PN533_POLL_MOD_106KBPS_A: | |
1751 | return 0; | |
1752 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1753 | return 1; | |
1754 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1755 | return 2; | |
1756 | default: | |
1757 | return -EINVAL; | |
1758 | } | |
1759 | } | |
1760 | ||
d7f3345d | 1761 | #define PASSIVE_DATA_LEN 5 |
90099433 | 1762 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
47807d3d | 1763 | u8 comm_mode, u8* gb, size_t gb_len) |
361f3cb7 SO |
1764 | { |
1765 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1766 | struct pn533_cmd_jump_dep *cmd; | |
d7f3345d SO |
1767 | u8 cmd_len, *data_ptr; |
1768 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; | |
41a8ec49 | 1769 | int rc, baud; |
361f3cb7 SO |
1770 | |
1771 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1772 | ||
361f3cb7 SO |
1773 | if (dev->poll_mod_count) { |
1774 | nfc_dev_err(&dev->interface->dev, | |
1775 | "Cannot bring the DEP link up while polling"); | |
1776 | return -EBUSY; | |
1777 | } | |
1778 | ||
1779 | if (dev->tgt_active_prot) { | |
1780 | nfc_dev_err(&dev->interface->dev, | |
1781 | "There is already an active target"); | |
1782 | return -EBUSY; | |
1783 | } | |
1784 | ||
41a8ec49 SO |
1785 | baud = pn533_mod_to_baud(dev); |
1786 | if (baud < 0) { | |
1787 | nfc_dev_err(&dev->interface->dev, | |
1788 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
1789 | return baud; | |
1790 | } | |
1791 | ||
47807d3d | 1792 | cmd_len = sizeof(struct pn533_cmd_jump_dep) + gb_len; |
d7f3345d SO |
1793 | if (comm_mode == NFC_COMM_PASSIVE) |
1794 | cmd_len += PASSIVE_DATA_LEN; | |
1795 | ||
361f3cb7 SO |
1796 | cmd = kzalloc(cmd_len, GFP_KERNEL); |
1797 | if (cmd == NULL) | |
1798 | return -ENOMEM; | |
1799 | ||
1800 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_JUMP_FOR_DEP); | |
1801 | ||
1802 | cmd->active = !comm_mode; | |
d7f3345d | 1803 | cmd->next = 0; |
41a8ec49 | 1804 | cmd->baud = baud; |
d7f3345d SO |
1805 | data_ptr = cmd->data; |
1806 | if (comm_mode == NFC_COMM_PASSIVE && cmd->baud > 0) { | |
1807 | memcpy(data_ptr, passive_data, PASSIVE_DATA_LEN); | |
1808 | cmd->next |= 1; | |
1809 | data_ptr += PASSIVE_DATA_LEN; | |
1810 | } | |
1811 | ||
47807d3d | 1812 | if (gb != NULL && gb_len > 0) { |
d7f3345d SO |
1813 | cmd->next |= 4; /* We have some Gi */ |
1814 | memcpy(data_ptr, gb, gb_len); | |
361f3cb7 SO |
1815 | } else { |
1816 | cmd->next = 0; | |
1817 | } | |
1818 | ||
1819 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), cmd, cmd_len); | |
1820 | dev->out_frame->datalen += cmd_len; | |
1821 | ||
1822 | pn533_tx_frame_finish(dev->out_frame); | |
1823 | ||
1824 | rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame, | |
1825 | dev->in_maxlen, pn533_in_dep_link_up_complete, | |
1826 | cmd, GFP_KERNEL); | |
770f750b SJ |
1827 | if (rc < 0) |
1828 | kfree(cmd); | |
361f3cb7 SO |
1829 | |
1830 | return rc; | |
1831 | } | |
1832 | ||
1833 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
1834 | { | |
6fbbdc16 SO |
1835 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
1836 | ||
1837 | pn533_poll_reset_mod_list(dev); | |
1838 | ||
51ad304c SO |
1839 | if (dev->tgt_mode || dev->tgt_active_prot) { |
1840 | pn533_send_ack(dev, GFP_KERNEL); | |
1841 | usb_kill_urb(dev->in_urb); | |
1842 | } | |
1843 | ||
1844 | dev->tgt_active_prot = 0; | |
1845 | dev->tgt_mode = 0; | |
1846 | ||
1847 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
1848 | |
1849 | return 0; | |
1850 | } | |
1851 | ||
dadb06f2 SO |
1852 | static int pn533_build_tx_frame(struct pn533 *dev, struct sk_buff *skb, |
1853 | bool target) | |
c46ee386 AAJ |
1854 | { |
1855 | int payload_len = skb->len; | |
1856 | struct pn533_frame *out_frame; | |
c46ee386 AAJ |
1857 | u8 tg; |
1858 | ||
1859 | nfc_dev_dbg(&dev->interface->dev, "%s - Sending %d bytes", __func__, | |
1860 | payload_len); | |
1861 | ||
1862 | if (payload_len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { | |
1863 | /* TODO: Implement support to multi-part data exchange */ | |
1864 | nfc_dev_err(&dev->interface->dev, "Data length greater than the" | |
1865 | " max allowed: %d", | |
1866 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
1867 | return -ENOSYS; | |
1868 | } | |
1869 | ||
dadb06f2 | 1870 | if (target == true) { |
5c7b0531 | 1871 | switch (dev->device_type) { |
a1fbbf18 SO |
1872 | case PN533_DEVICE_PASORI: |
1873 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
1874 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN - 1); | |
1875 | out_frame = (struct pn533_frame *) skb->data; | |
1876 | pn533_tx_frame_init(out_frame, | |
1877 | PN533_CMD_IN_COMM_THRU); | |
1878 | ||
1879 | break; | |
1880 | } | |
1881 | ||
1882 | default: | |
5c7b0531 SO |
1883 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN); |
1884 | out_frame = (struct pn533_frame *) skb->data; | |
1885 | pn533_tx_frame_init(out_frame, | |
1886 | PN533_CMD_IN_DATA_EXCHANGE); | |
1887 | tg = 1; | |
1888 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(out_frame), | |
1889 | &tg, sizeof(u8)); | |
1890 | out_frame->datalen += sizeof(u8); | |
5c7b0531 SO |
1891 | |
1892 | break; | |
5c7b0531 | 1893 | } |
c46ee386 | 1894 | |
dadb06f2 SO |
1895 | } else { |
1896 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN - 1); | |
1897 | out_frame = (struct pn533_frame *) skb->data; | |
1898 | pn533_tx_frame_init(out_frame, PN533_CMD_TG_SET_DATA); | |
1899 | } | |
c46ee386 | 1900 | |
c46ee386 AAJ |
1901 | |
1902 | /* The data is already in the out_frame, just update the datalen */ | |
1903 | out_frame->datalen += payload_len; | |
1904 | ||
1905 | pn533_tx_frame_finish(out_frame); | |
1906 | skb_put(skb, PN533_FRAME_TAIL_SIZE); | |
1907 | ||
1908 | return 0; | |
1909 | } | |
1910 | ||
1911 | struct pn533_data_exchange_arg { | |
1912 | struct sk_buff *skb_resp; | |
1913 | struct sk_buff *skb_out; | |
1914 | data_exchange_cb_t cb; | |
1915 | void *cb_context; | |
1916 | }; | |
1917 | ||
6ff73fd2 SO |
1918 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
1919 | { | |
1920 | struct sk_buff *skb, *tmp, *t; | |
1921 | unsigned int skb_len = 0, tmp_len = 0; | |
1922 | ||
1923 | nfc_dev_dbg(&dev->interface->dev, "%s\n", __func__); | |
1924 | ||
1925 | if (skb_queue_empty(&dev->resp_q)) | |
1926 | return NULL; | |
1927 | ||
1928 | if (skb_queue_len(&dev->resp_q) == 1) { | |
1929 | skb = skb_dequeue(&dev->resp_q); | |
1930 | goto out; | |
1931 | } | |
1932 | ||
1933 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
1934 | skb_len += tmp->len; | |
1935 | ||
1936 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
1937 | __func__, skb_len); | |
1938 | ||
1939 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
1940 | if (skb == NULL) | |
1941 | goto out; | |
1942 | ||
1943 | skb_put(skb, skb_len); | |
1944 | ||
1945 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
1946 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
1947 | tmp_len += tmp->len; | |
1948 | } | |
1949 | ||
1950 | out: | |
1951 | skb_queue_purge(&dev->resp_q); | |
1952 | ||
1953 | return skb; | |
1954 | } | |
1955 | ||
c46ee386 AAJ |
1956 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
1957 | u8 *params, int params_len) | |
1958 | { | |
1959 | struct pn533_data_exchange_arg *arg = _arg; | |
6ff73fd2 | 1960 | struct sk_buff *skb = NULL, *skb_resp = arg->skb_resp; |
c46ee386 AAJ |
1961 | struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data; |
1962 | int err = 0; | |
1963 | u8 status; | |
1964 | u8 cmd_ret; | |
1965 | ||
1966 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1967 | ||
6ff73fd2 | 1968 | dev_kfree_skb(arg->skb_out); |
c46ee386 AAJ |
1969 | |
1970 | if (params_len < 0) { /* error */ | |
1971 | err = params_len; | |
1972 | goto error; | |
1973 | } | |
1974 | ||
c46ee386 AAJ |
1975 | status = params[0]; |
1976 | ||
1977 | cmd_ret = status & PN533_CMD_RET_MASK; | |
1978 | if (cmd_ret != PN533_CMD_RET_SUCCESS) { | |
1979 | nfc_dev_err(&dev->interface->dev, "PN533 reported error %d when" | |
1980 | " exchanging data", cmd_ret); | |
1981 | err = -EIO; | |
1982 | goto error; | |
1983 | } | |
1984 | ||
6ff73fd2 SO |
1985 | skb_put(skb_resp, PN533_FRAME_SIZE(in_frame)); |
1986 | skb_pull(skb_resp, PN533_CMD_DATAEXCH_HEAD_LEN); | |
1987 | skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_SIZE); | |
1988 | skb_queue_tail(&dev->resp_q, skb_resp); | |
1989 | ||
c46ee386 | 1990 | if (status & PN533_CMD_MI_MASK) { |
6ff73fd2 SO |
1991 | queue_work(dev->wq, &dev->mi_work); |
1992 | return -EINPROGRESS; | |
c46ee386 AAJ |
1993 | } |
1994 | ||
6ff73fd2 SO |
1995 | skb = pn533_build_response(dev); |
1996 | if (skb == NULL) | |
1997 | goto error; | |
c46ee386 | 1998 | |
6ff73fd2 | 1999 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
2000 | kfree(arg); |
2001 | return 0; | |
2002 | ||
2003 | error: | |
6ff73fd2 SO |
2004 | skb_queue_purge(&dev->resp_q); |
2005 | dev_kfree_skb(skb_resp); | |
c46ee386 AAJ |
2006 | arg->cb(arg->cb_context, NULL, err); |
2007 | kfree(arg); | |
2008 | return 0; | |
2009 | } | |
2010 | ||
be9ae4ce SO |
2011 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
2012 | struct nfc_target *target, struct sk_buff *skb, | |
2013 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
2014 | { |
2015 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
2016 | struct pn533_frame *out_frame, *in_frame; | |
2017 | struct pn533_data_exchange_arg *arg; | |
2018 | struct sk_buff *skb_resp; | |
2019 | int skb_resp_len; | |
2020 | int rc; | |
2021 | ||
2022 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2023 | ||
2024 | if (!dev->tgt_active_prot) { | |
2025 | nfc_dev_err(&dev->interface->dev, "Cannot exchange data if" | |
2026 | " there is no active target"); | |
2027 | rc = -EINVAL; | |
2028 | goto error; | |
2029 | } | |
2030 | ||
dadb06f2 | 2031 | rc = pn533_build_tx_frame(dev, skb, true); |
c46ee386 AAJ |
2032 | if (rc) |
2033 | goto error; | |
2034 | ||
2035 | skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN + | |
2036 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
2037 | PN533_FRAME_TAIL_SIZE; | |
2038 | ||
7c7cd3bf | 2039 | skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL); |
c46ee386 AAJ |
2040 | if (!skb_resp) { |
2041 | rc = -ENOMEM; | |
2042 | goto error; | |
2043 | } | |
2044 | ||
2045 | in_frame = (struct pn533_frame *) skb_resp->data; | |
2046 | out_frame = (struct pn533_frame *) skb->data; | |
2047 | ||
2048 | arg = kmalloc(sizeof(struct pn533_data_exchange_arg), GFP_KERNEL); | |
2049 | if (!arg) { | |
2050 | rc = -ENOMEM; | |
2051 | goto free_skb_resp; | |
2052 | } | |
2053 | ||
2054 | arg->skb_resp = skb_resp; | |
2055 | arg->skb_out = skb; | |
2056 | arg->cb = cb; | |
2057 | arg->cb_context = cb_context; | |
2058 | ||
2059 | rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, skb_resp_len, | |
2060 | pn533_data_exchange_complete, arg, | |
2061 | GFP_KERNEL); | |
2062 | if (rc) { | |
2063 | nfc_dev_err(&dev->interface->dev, "Error %d when trying to" | |
2064 | " perform data_exchange", rc); | |
2065 | goto free_arg; | |
2066 | } | |
2067 | ||
2068 | return 0; | |
2069 | ||
2070 | free_arg: | |
2071 | kfree(arg); | |
2072 | free_skb_resp: | |
2073 | kfree_skb(skb_resp); | |
2074 | error: | |
2075 | kfree_skb(skb); | |
2076 | return rc; | |
2077 | } | |
2078 | ||
dadb06f2 SO |
2079 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
2080 | u8 *params, int params_len) | |
2081 | { | |
5b412fd1 TE |
2082 | struct sk_buff *skb_out = arg; |
2083 | ||
dadb06f2 SO |
2084 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2085 | ||
5b412fd1 TE |
2086 | dev_kfree_skb(skb_out); |
2087 | ||
dadb06f2 SO |
2088 | if (params_len < 0) { |
2089 | nfc_dev_err(&dev->interface->dev, | |
2090 | "Error %d when sending data", | |
2091 | params_len); | |
2092 | ||
2093 | return params_len; | |
2094 | } | |
2095 | ||
2096 | if (params_len > 0 && params[0] != 0) { | |
2097 | nfc_tm_deactivated(dev->nfc_dev); | |
2098 | ||
51ad304c SO |
2099 | dev->tgt_mode = 0; |
2100 | ||
dadb06f2 SO |
2101 | return 0; |
2102 | } | |
2103 | ||
2104 | queue_work(dev->wq, &dev->tg_work); | |
2105 | ||
2106 | return 0; | |
2107 | } | |
2108 | ||
2109 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2110 | { | |
2111 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
2112 | struct pn533_frame *out_frame; | |
2113 | int rc; | |
2114 | ||
2115 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2116 | ||
2117 | rc = pn533_build_tx_frame(dev, skb, false); | |
2118 | if (rc) | |
2119 | goto error; | |
2120 | ||
2121 | out_frame = (struct pn533_frame *) skb->data; | |
2122 | ||
2123 | rc = pn533_send_cmd_frame_async(dev, out_frame, dev->in_frame, | |
2124 | dev->in_maxlen, pn533_tm_send_complete, | |
5b412fd1 | 2125 | skb, GFP_KERNEL); |
dadb06f2 SO |
2126 | if (rc) { |
2127 | nfc_dev_err(&dev->interface->dev, | |
2128 | "Error %d when trying to send data", rc); | |
2129 | goto error; | |
2130 | } | |
2131 | ||
2132 | return 0; | |
2133 | ||
2134 | error: | |
2135 | kfree_skb(skb); | |
2136 | ||
2137 | return rc; | |
2138 | } | |
2139 | ||
6ff73fd2 SO |
2140 | static void pn533_wq_mi_recv(struct work_struct *work) |
2141 | { | |
2142 | struct pn533 *dev = container_of(work, struct pn533, mi_work); | |
2143 | struct sk_buff *skb_cmd; | |
2144 | struct pn533_data_exchange_arg *arg = dev->cmd_complete_arg; | |
2145 | struct pn533_frame *out_frame, *in_frame; | |
2146 | struct sk_buff *skb_resp; | |
2147 | int skb_resp_len; | |
2148 | int rc; | |
2149 | ||
2150 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2151 | ||
2152 | /* This is a zero payload size skb */ | |
2153 | skb_cmd = alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN + PN533_FRAME_TAIL_SIZE, | |
2154 | GFP_KERNEL); | |
2155 | if (skb_cmd == NULL) | |
2156 | goto error_cmd; | |
2157 | ||
2158 | skb_reserve(skb_cmd, PN533_CMD_DATAEXCH_HEAD_LEN); | |
2159 | ||
dadb06f2 | 2160 | rc = pn533_build_tx_frame(dev, skb_cmd, true); |
6ff73fd2 SO |
2161 | if (rc) |
2162 | goto error_frame; | |
2163 | ||
2164 | skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN + | |
2165 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
2166 | PN533_FRAME_TAIL_SIZE; | |
2167 | skb_resp = alloc_skb(skb_resp_len, GFP_KERNEL); | |
2168 | if (!skb_resp) { | |
2169 | rc = -ENOMEM; | |
2170 | goto error_frame; | |
2171 | } | |
2172 | ||
2173 | in_frame = (struct pn533_frame *) skb_resp->data; | |
2174 | out_frame = (struct pn533_frame *) skb_cmd->data; | |
2175 | ||
2176 | arg->skb_resp = skb_resp; | |
2177 | arg->skb_out = skb_cmd; | |
2178 | ||
2179 | rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame, | |
2180 | skb_resp_len, | |
2181 | pn533_data_exchange_complete, | |
2182 | dev->cmd_complete_arg, GFP_KERNEL); | |
2183 | if (!rc) | |
2184 | return; | |
2185 | ||
2186 | nfc_dev_err(&dev->interface->dev, "Error %d when trying to" | |
2187 | " perform data_exchange", rc); | |
2188 | ||
2189 | kfree_skb(skb_resp); | |
2190 | ||
2191 | error_frame: | |
2192 | kfree_skb(skb_cmd); | |
2193 | ||
2194 | error_cmd: | |
2195 | pn533_send_ack(dev, GFP_KERNEL); | |
2196 | ||
2197 | kfree(arg); | |
2198 | ||
5d50b364 | 2199 | queue_work(dev->wq, &dev->cmd_work); |
6ff73fd2 SO |
2200 | } |
2201 | ||
c46ee386 AAJ |
2202 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2203 | u8 cfgdata_len) | |
2204 | { | |
2205 | int rc; | |
2206 | u8 *params; | |
2207 | ||
2208 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2209 | ||
2210 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_RF_CONFIGURATION); | |
2211 | ||
2212 | params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame); | |
2213 | params[0] = cfgitem; | |
2214 | memcpy(¶ms[1], cfgdata, cfgdata_len); | |
2215 | dev->out_frame->datalen += (1 + cfgdata_len); | |
2216 | ||
2217 | pn533_tx_frame_finish(dev->out_frame); | |
2218 | ||
2219 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
2220 | dev->in_maxlen); | |
2221 | ||
2222 | return rc; | |
2223 | } | |
2224 | ||
5c7b0531 SO |
2225 | static int pn533_fw_reset(struct pn533 *dev) |
2226 | { | |
2227 | int rc; | |
2228 | u8 *params; | |
2229 | ||
2230 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2231 | ||
2232 | pn533_tx_frame_init(dev->out_frame, 0x18); | |
2233 | ||
2234 | params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame); | |
2235 | params[0] = 0x1; | |
2236 | dev->out_frame->datalen += 1; | |
2237 | ||
2238 | pn533_tx_frame_finish(dev->out_frame); | |
2239 | ||
2240 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
2241 | dev->in_maxlen); | |
2242 | ||
2243 | return rc; | |
2244 | } | |
2245 | ||
2246 | static struct nfc_ops pn533_nfc_ops = { | |
8b3fe7b5 IE |
2247 | .dev_up = NULL, |
2248 | .dev_down = NULL, | |
361f3cb7 SO |
2249 | .dep_link_up = pn533_dep_link_up, |
2250 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2251 | .start_poll = pn533_start_poll, |
2252 | .stop_poll = pn533_stop_poll, | |
2253 | .activate_target = pn533_activate_target, | |
2254 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2255 | .im_transceive = pn533_transceive, |
dadb06f2 | 2256 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2257 | }; |
2258 | ||
5c7b0531 SO |
2259 | static int pn533_setup(struct pn533 *dev) |
2260 | { | |
2261 | struct pn533_config_max_retries max_retries; | |
2262 | struct pn533_config_timing timing; | |
2263 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2264 | int rc; | |
2265 | ||
2266 | switch (dev->device_type) { | |
2267 | case PN533_DEVICE_STD: | |
2268 | max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS; | |
2269 | max_retries.mx_rty_psl = 2; | |
2270 | max_retries.mx_rty_passive_act = | |
2271 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2272 | ||
2273 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2274 | timing.atr_res_timeout = PN533_CONFIG_TIMING_204; | |
2275 | timing.dep_timeout = PN533_CONFIG_TIMING_409; | |
2276 | ||
2277 | break; | |
2278 | ||
2279 | case PN533_DEVICE_PASORI: | |
2280 | max_retries.mx_rty_atr = 0x2; | |
2281 | max_retries.mx_rty_psl = 0x1; | |
2282 | max_retries.mx_rty_passive_act = | |
2283 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2284 | ||
2285 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2286 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2287 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2288 | ||
2289 | break; | |
2290 | ||
2291 | default: | |
2292 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2293 | dev->device_type); | |
2294 | return -EINVAL; | |
2295 | } | |
2296 | ||
2297 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2298 | (u8 *)&max_retries, sizeof(max_retries)); | |
2299 | if (rc) { | |
2300 | nfc_dev_err(&dev->interface->dev, | |
2301 | "Error on setting MAX_RETRIES config"); | |
2302 | return rc; | |
2303 | } | |
2304 | ||
2305 | ||
2306 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2307 | (u8 *)&timing, sizeof(timing)); | |
2308 | if (rc) { | |
2309 | nfc_dev_err(&dev->interface->dev, | |
2310 | "Error on setting RF timings"); | |
2311 | return rc; | |
2312 | } | |
2313 | ||
2314 | switch (dev->device_type) { | |
2315 | case PN533_DEVICE_STD: | |
2316 | break; | |
2317 | ||
2318 | case PN533_DEVICE_PASORI: | |
2319 | pn533_fw_reset(dev); | |
2320 | ||
2321 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2322 | pasori_cfg, 3); | |
2323 | if (rc) { | |
2324 | nfc_dev_err(&dev->interface->dev, | |
2325 | "Error while settings PASORI config"); | |
2326 | return rc; | |
2327 | } | |
2328 | ||
2329 | pn533_fw_reset(dev); | |
2330 | ||
2331 | break; | |
2332 | } | |
2333 | ||
2334 | return 0; | |
2335 | } | |
2336 | ||
c46ee386 AAJ |
2337 | static int pn533_probe(struct usb_interface *interface, |
2338 | const struct usb_device_id *id) | |
2339 | { | |
2340 | struct pn533_fw_version *fw_ver; | |
2341 | struct pn533 *dev; | |
2342 | struct usb_host_interface *iface_desc; | |
2343 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2344 | int in_endpoint = 0; |
2345 | int out_endpoint = 0; | |
2346 | int rc = -ENOMEM; | |
2347 | int i; | |
2348 | u32 protocols; | |
2349 | ||
2350 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2351 | if (!dev) | |
2352 | return -ENOMEM; | |
2353 | ||
2354 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2355 | dev->interface = interface; | |
0201ed03 | 2356 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2357 | |
2358 | iface_desc = interface->cur_altsetting; | |
2359 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2360 | endpoint = &iface_desc->endpoint[i].desc; | |
2361 | ||
2362 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) { | |
2363 | dev->in_maxlen = le16_to_cpu(endpoint->wMaxPacketSize); | |
2364 | in_endpoint = endpoint->bEndpointAddress; | |
2365 | } | |
2366 | ||
2367 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) { | |
2368 | dev->out_maxlen = | |
2369 | le16_to_cpu(endpoint->wMaxPacketSize); | |
2370 | out_endpoint = endpoint->bEndpointAddress; | |
2371 | } | |
2372 | } | |
2373 | ||
2374 | if (!in_endpoint || !out_endpoint) { | |
2375 | nfc_dev_err(&interface->dev, "Could not find bulk-in or" | |
2376 | " bulk-out endpoint"); | |
2377 | rc = -ENODEV; | |
2378 | goto error; | |
2379 | } | |
2380 | ||
82dec34d | 2381 | dev->in_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL); |
c46ee386 | 2382 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); |
82dec34d | 2383 | dev->out_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL); |
c46ee386 AAJ |
2384 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); |
2385 | ||
2386 | if (!dev->in_frame || !dev->out_frame || | |
2387 | !dev->in_urb || !dev->out_urb) | |
2388 | goto error; | |
2389 | ||
2390 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
2391 | usb_rcvbulkpipe(dev->udev, in_endpoint), | |
2392 | NULL, 0, NULL, dev); | |
2393 | usb_fill_bulk_urb(dev->out_urb, dev->udev, | |
2394 | usb_sndbulkpipe(dev->udev, out_endpoint), | |
2395 | NULL, 0, | |
2396 | pn533_send_complete, dev); | |
2397 | ||
5d50b364 SO |
2398 | INIT_WORK(&dev->cmd_work, pn533_wq_cmd); |
2399 | INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete); | |
6ff73fd2 | 2400 | INIT_WORK(&dev->mi_work, pn533_wq_mi_recv); |
103b34cf | 2401 | INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); |
6fbbdc16 | 2402 | INIT_WORK(&dev->poll_work, pn533_wq_poll); |
58637c9b | 2403 | dev->wq = alloc_ordered_workqueue("pn533", 0); |
4849f85e SO |
2404 | if (dev->wq == NULL) |
2405 | goto error; | |
c46ee386 | 2406 | |
6fbbdc16 SO |
2407 | init_timer(&dev->listen_timer); |
2408 | dev->listen_timer.data = (unsigned long) dev; | |
2409 | dev->listen_timer.function = pn533_listen_mode_timer; | |
2410 | ||
6ff73fd2 SO |
2411 | skb_queue_head_init(&dev->resp_q); |
2412 | ||
5d50b364 SO |
2413 | INIT_LIST_HEAD(&dev->cmd_queue); |
2414 | ||
c46ee386 AAJ |
2415 | usb_set_intfdata(interface, dev); |
2416 | ||
2417 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_GET_FIRMWARE_VERSION); | |
2418 | pn533_tx_frame_finish(dev->out_frame); | |
2419 | ||
2420 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
2421 | dev->in_maxlen); | |
2422 | if (rc) | |
4849f85e | 2423 | goto destroy_wq; |
c46ee386 AAJ |
2424 | |
2425 | fw_ver = (struct pn533_fw_version *) | |
2426 | PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame); | |
2427 | nfc_dev_info(&dev->interface->dev, "NXP PN533 firmware ver %d.%d now" | |
2428 | " attached", fw_ver->ver, fw_ver->rev); | |
2429 | ||
5c7b0531 SO |
2430 | dev->device_type = id->driver_info; |
2431 | switch (dev->device_type) { | |
2432 | case PN533_DEVICE_STD: | |
2433 | protocols = PN533_ALL_PROTOCOLS; | |
2434 | break; | |
2435 | ||
2436 | case PN533_DEVICE_PASORI: | |
2437 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2438 | break; | |
2439 | ||
2440 | default: | |
2441 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2442 | dev->device_type); | |
2443 | rc = -EINVAL; | |
2444 | goto destroy_wq; | |
2445 | } | |
c46ee386 | 2446 | |
e8753043 SO |
2447 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
2448 | PN533_CMD_DATAEXCH_HEAD_LEN, | |
2449 | PN533_FRAME_TAIL_SIZE); | |
c46ee386 | 2450 | if (!dev->nfc_dev) |
4849f85e | 2451 | goto destroy_wq; |
c46ee386 AAJ |
2452 | |
2453 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2454 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2455 | ||
2456 | rc = nfc_register_device(dev->nfc_dev); | |
2457 | if (rc) | |
2458 | goto free_nfc_dev; | |
2459 | ||
5c7b0531 SO |
2460 | rc = pn533_setup(dev); |
2461 | if (rc) | |
34a85bfc | 2462 | goto unregister_nfc_dev; |
34a85bfc | 2463 | |
c46ee386 AAJ |
2464 | return 0; |
2465 | ||
9f2f8ba1 SO |
2466 | unregister_nfc_dev: |
2467 | nfc_unregister_device(dev->nfc_dev); | |
2468 | ||
c46ee386 AAJ |
2469 | free_nfc_dev: |
2470 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2471 | |
4849f85e SO |
2472 | destroy_wq: |
2473 | destroy_workqueue(dev->wq); | |
c46ee386 AAJ |
2474 | error: |
2475 | kfree(dev->in_frame); | |
2476 | usb_free_urb(dev->in_urb); | |
2477 | kfree(dev->out_frame); | |
2478 | usb_free_urb(dev->out_urb); | |
2479 | kfree(dev); | |
2480 | return rc; | |
2481 | } | |
2482 | ||
2483 | static void pn533_disconnect(struct usb_interface *interface) | |
2484 | { | |
2485 | struct pn533 *dev; | |
5d50b364 | 2486 | struct pn533_cmd *cmd, *n; |
c46ee386 AAJ |
2487 | |
2488 | dev = usb_get_intfdata(interface); | |
2489 | usb_set_intfdata(interface, NULL); | |
2490 | ||
2491 | nfc_unregister_device(dev->nfc_dev); | |
2492 | nfc_free_device(dev->nfc_dev); | |
2493 | ||
2494 | usb_kill_urb(dev->in_urb); | |
2495 | usb_kill_urb(dev->out_urb); | |
2496 | ||
4849f85e | 2497 | destroy_workqueue(dev->wq); |
c46ee386 | 2498 | |
6ff73fd2 SO |
2499 | skb_queue_purge(&dev->resp_q); |
2500 | ||
6fbbdc16 SO |
2501 | del_timer(&dev->listen_timer); |
2502 | ||
5d50b364 SO |
2503 | list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { |
2504 | list_del(&cmd->queue); | |
2505 | kfree(cmd); | |
2506 | } | |
2507 | ||
c46ee386 AAJ |
2508 | kfree(dev->in_frame); |
2509 | usb_free_urb(dev->in_urb); | |
2510 | kfree(dev->out_frame); | |
2511 | usb_free_urb(dev->out_urb); | |
2512 | kfree(dev); | |
2513 | ||
276556db | 2514 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2515 | } |
2516 | ||
2517 | static struct usb_driver pn533_driver = { | |
2518 | .name = "pn533", | |
2519 | .probe = pn533_probe, | |
2520 | .disconnect = pn533_disconnect, | |
2521 | .id_table = pn533_table, | |
2522 | }; | |
2523 | ||
fe748483 | 2524 | module_usb_driver(pn533_driver); |
c46ee386 AAJ |
2525 | |
2526 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>," | |
2527 | " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2528 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); | |
2529 | MODULE_VERSION(VERSION); | |
2530 | MODULE_LICENSE("GPL"); |