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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 | ||
5c7b0531 SO |
44 | #define PN533_DEVICE_STD 0x1 |
45 | #define PN533_DEVICE_PASORI 0x2 | |
46 | ||
01d719a2 SO |
47 | #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\ |
48 | NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\ | |
49 | NFC_PROTO_NFC_DEP_MASK |\ | |
50 | NFC_PROTO_ISO14443_B_MASK) | |
5c7b0531 SO |
51 | |
52 | #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ | |
53 | NFC_PROTO_MIFARE_MASK | \ | |
54 | NFC_PROTO_FELICA_MASK | \ | |
01d719a2 | 55 | NFC_PROTO_ISO14443_MASK | \ |
5c7b0531 SO |
56 | NFC_PROTO_NFC_DEP_MASK) |
57 | ||
c46ee386 | 58 | static const struct usb_device_id pn533_table[] = { |
5c7b0531 SO |
59 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
60 | .idVendor = PN533_VENDOR_ID, | |
61 | .idProduct = PN533_PRODUCT_ID, | |
62 | .driver_info = PN533_DEVICE_STD, | |
63 | }, | |
64 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
65 | .idVendor = SCM_VENDOR_ID, | |
66 | .idProduct = SCL3711_PRODUCT_ID, | |
67 | .driver_info = PN533_DEVICE_STD, | |
68 | }, | |
69 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
70 | .idVendor = SONY_VENDOR_ID, | |
71 | .idProduct = PASORI_PRODUCT_ID, | |
72 | .driver_info = PN533_DEVICE_PASORI, | |
73 | }, | |
c46ee386 AAJ |
74 | { } |
75 | }; | |
76 | MODULE_DEVICE_TABLE(usb, pn533_table); | |
77 | ||
6fbbdc16 SO |
78 | /* How much time we spend listening for initiators */ |
79 | #define PN533_LISTEN_TIME 2 | |
80 | ||
c46ee386 | 81 | /* frame definitions */ |
82dec34d WR |
82 | #define PN533_NORMAL_FRAME_MAX_LEN 262 /* 6 (PREAMBLE, SOF, LEN, LCS, TFI) |
83 | 254 (DATA) | |
84 | 2 (DCS, postamble) */ | |
b1bb290a WR |
85 | #define PN533_FRAME_HEADER_LEN (sizeof(struct pn533_frame) \ |
86 | + 2) /* data[0] TFI, data[1] CC */ | |
87 | #define PN533_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ | |
82dec34d | 88 | |
c46ee386 | 89 | #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \ |
b1bb290a | 90 | PN533_FRAME_TAIL_LEN) |
c46ee386 AAJ |
91 | #define PN533_FRAME_ACK_SIZE (sizeof(struct pn533_frame) + 1) |
92 | #define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen]) | |
93 | #define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1]) | |
94 | ||
95 | /* start of frame */ | |
96 | #define PN533_SOF 0x00FF | |
97 | ||
98 | /* frame identifier: in/out/error */ | |
99 | #define PN533_FRAME_IDENTIFIER(f) (f->data[0]) | |
100 | #define PN533_DIR_OUT 0xD4 | |
101 | #define PN533_DIR_IN 0xD5 | |
102 | ||
103 | /* PN533 Commands */ | |
104 | #define PN533_FRAME_CMD(f) (f->data[1]) | |
105 | #define PN533_FRAME_CMD_PARAMS_PTR(f) (&f->data[2]) | |
106 | #define PN533_FRAME_CMD_PARAMS_LEN(f) (f->datalen - 2) | |
107 | ||
108 | #define PN533_CMD_GET_FIRMWARE_VERSION 0x02 | |
109 | #define PN533_CMD_RF_CONFIGURATION 0x32 | |
110 | #define PN533_CMD_IN_DATA_EXCHANGE 0x40 | |
5c7b0531 | 111 | #define PN533_CMD_IN_COMM_THRU 0x42 |
c46ee386 AAJ |
112 | #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A |
113 | #define PN533_CMD_IN_ATR 0x50 | |
114 | #define PN533_CMD_IN_RELEASE 0x52 | |
361f3cb7 | 115 | #define PN533_CMD_IN_JUMP_FOR_DEP 0x56 |
c46ee386 | 116 | |
ad3823ce | 117 | #define PN533_CMD_TG_INIT_AS_TARGET 0x8c |
103b34cf | 118 | #define PN533_CMD_TG_GET_DATA 0x86 |
dadb06f2 | 119 | #define PN533_CMD_TG_SET_DATA 0x8e |
ad3823ce | 120 | |
c46ee386 AAJ |
121 | #define PN533_CMD_RESPONSE(cmd) (cmd + 1) |
122 | ||
123 | /* PN533 Return codes */ | |
124 | #define PN533_CMD_RET_MASK 0x3F | |
125 | #define PN533_CMD_MI_MASK 0x40 | |
126 | #define PN533_CMD_RET_SUCCESS 0x00 | |
127 | ||
128 | struct pn533; | |
129 | ||
130 | typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, | |
131 | u8 *params, int params_len); | |
132 | ||
133 | /* structs for pn533 commands */ | |
134 | ||
135 | /* PN533_CMD_GET_FIRMWARE_VERSION */ | |
136 | struct pn533_fw_version { | |
137 | u8 ic; | |
138 | u8 ver; | |
139 | u8 rev; | |
140 | u8 support; | |
141 | }; | |
142 | ||
143 | /* PN533_CMD_RF_CONFIGURATION */ | |
34a85bfc | 144 | #define PN533_CFGITEM_TIMING 0x02 |
c46ee386 | 145 | #define PN533_CFGITEM_MAX_RETRIES 0x05 |
5c7b0531 | 146 | #define PN533_CFGITEM_PASORI 0x82 |
c46ee386 | 147 | |
34a85bfc SO |
148 | #define PN533_CONFIG_TIMING_102 0xb |
149 | #define PN533_CONFIG_TIMING_204 0xc | |
150 | #define PN533_CONFIG_TIMING_409 0xd | |
151 | #define PN533_CONFIG_TIMING_819 0xe | |
152 | ||
c46ee386 AAJ |
153 | #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 |
154 | #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF | |
155 | ||
156 | struct pn533_config_max_retries { | |
157 | u8 mx_rty_atr; | |
158 | u8 mx_rty_psl; | |
159 | u8 mx_rty_passive_act; | |
160 | } __packed; | |
161 | ||
34a85bfc SO |
162 | struct pn533_config_timing { |
163 | u8 rfu; | |
164 | u8 atr_res_timeout; | |
165 | u8 dep_timeout; | |
166 | } __packed; | |
167 | ||
c46ee386 AAJ |
168 | /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ |
169 | ||
170 | /* felica commands opcode */ | |
171 | #define PN533_FELICA_OPC_SENSF_REQ 0 | |
172 | #define PN533_FELICA_OPC_SENSF_RES 1 | |
173 | /* felica SENSF_REQ parameters */ | |
174 | #define PN533_FELICA_SENSF_SC_ALL 0xFFFF | |
175 | #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 | |
176 | #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 | |
177 | #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 | |
178 | ||
179 | /* type B initiator_data values */ | |
180 | #define PN533_TYPE_B_AFI_ALL_FAMILIES 0 | |
181 | #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 | |
182 | #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 | |
183 | ||
184 | union pn533_cmd_poll_initdata { | |
185 | struct { | |
186 | u8 afi; | |
187 | u8 polling_method; | |
188 | } __packed type_b; | |
189 | struct { | |
190 | u8 opcode; | |
191 | __be16 sc; | |
192 | u8 rc; | |
193 | u8 tsn; | |
194 | } __packed felica; | |
195 | }; | |
196 | ||
197 | /* Poll modulations */ | |
198 | enum { | |
199 | PN533_POLL_MOD_106KBPS_A, | |
200 | PN533_POLL_MOD_212KBPS_FELICA, | |
201 | PN533_POLL_MOD_424KBPS_FELICA, | |
202 | PN533_POLL_MOD_106KBPS_JEWEL, | |
203 | PN533_POLL_MOD_847KBPS_B, | |
6fbbdc16 | 204 | PN533_LISTEN_MOD, |
c46ee386 AAJ |
205 | |
206 | __PN533_POLL_MOD_AFTER_LAST, | |
207 | }; | |
208 | #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) | |
209 | ||
210 | struct pn533_poll_modulations { | |
211 | struct { | |
212 | u8 maxtg; | |
213 | u8 brty; | |
214 | union pn533_cmd_poll_initdata initiator_data; | |
215 | } __packed data; | |
216 | u8 len; | |
217 | }; | |
218 | ||
219 | const struct pn533_poll_modulations poll_mod[] = { | |
220 | [PN533_POLL_MOD_106KBPS_A] = { | |
221 | .data = { | |
222 | .maxtg = 1, | |
223 | .brty = 0, | |
224 | }, | |
225 | .len = 2, | |
226 | }, | |
227 | [PN533_POLL_MOD_212KBPS_FELICA] = { | |
228 | .data = { | |
229 | .maxtg = 1, | |
230 | .brty = 1, | |
231 | .initiator_data.felica = { | |
232 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
233 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
234 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
235 | .tsn = 0, | |
236 | }, | |
237 | }, | |
238 | .len = 7, | |
239 | }, | |
240 | [PN533_POLL_MOD_424KBPS_FELICA] = { | |
241 | .data = { | |
242 | .maxtg = 1, | |
243 | .brty = 2, | |
244 | .initiator_data.felica = { | |
245 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
246 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
247 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
248 | .tsn = 0, | |
249 | }, | |
250 | }, | |
251 | .len = 7, | |
252 | }, | |
253 | [PN533_POLL_MOD_106KBPS_JEWEL] = { | |
254 | .data = { | |
255 | .maxtg = 1, | |
256 | .brty = 4, | |
257 | }, | |
258 | .len = 2, | |
259 | }, | |
260 | [PN533_POLL_MOD_847KBPS_B] = { | |
261 | .data = { | |
262 | .maxtg = 1, | |
263 | .brty = 8, | |
264 | .initiator_data.type_b = { | |
265 | .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, | |
266 | .polling_method = | |
267 | PN533_TYPE_B_POLL_METHOD_TIMESLOT, | |
268 | }, | |
269 | }, | |
270 | .len = 3, | |
271 | }, | |
6fbbdc16 SO |
272 | [PN533_LISTEN_MOD] = { |
273 | .len = 0, | |
274 | }, | |
c46ee386 AAJ |
275 | }; |
276 | ||
277 | /* PN533_CMD_IN_ATR */ | |
278 | ||
279 | struct pn533_cmd_activate_param { | |
280 | u8 tg; | |
281 | u8 next; | |
282 | } __packed; | |
283 | ||
284 | struct pn533_cmd_activate_response { | |
285 | u8 status; | |
286 | u8 nfcid3t[10]; | |
287 | u8 didt; | |
288 | u8 bst; | |
289 | u8 brt; | |
290 | u8 to; | |
291 | u8 ppt; | |
292 | /* optional */ | |
293 | u8 gt[]; | |
294 | } __packed; | |
295 | ||
361f3cb7 SO |
296 | /* PN533_CMD_IN_JUMP_FOR_DEP */ |
297 | struct pn533_cmd_jump_dep { | |
298 | u8 active; | |
299 | u8 baud; | |
300 | u8 next; | |
d7f3345d | 301 | u8 data[]; |
361f3cb7 SO |
302 | } __packed; |
303 | ||
304 | struct pn533_cmd_jump_dep_response { | |
305 | u8 status; | |
306 | u8 tg; | |
307 | u8 nfcid3t[10]; | |
308 | u8 didt; | |
309 | u8 bst; | |
310 | u8 brt; | |
311 | u8 to; | |
312 | u8 ppt; | |
313 | /* optional */ | |
314 | u8 gt[]; | |
315 | } __packed; | |
c46ee386 | 316 | |
ad3823ce SO |
317 | |
318 | /* PN533_TG_INIT_AS_TARGET */ | |
319 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
320 | #define PN533_INIT_TARGET_DEP 0x2 | |
321 | ||
fc40a8c1 SO |
322 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
323 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
324 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
325 | ||
ad3823ce SO |
326 | struct pn533_cmd_init_target { |
327 | u8 mode; | |
328 | u8 mifare[6]; | |
329 | u8 felica[18]; | |
330 | u8 nfcid3[10]; | |
331 | u8 gb_len; | |
332 | u8 gb[]; | |
333 | } __packed; | |
334 | ||
335 | struct pn533_cmd_init_target_response { | |
336 | u8 mode; | |
337 | u8 cmd[]; | |
338 | } __packed; | |
339 | ||
c46ee386 AAJ |
340 | struct pn533 { |
341 | struct usb_device *udev; | |
342 | struct usb_interface *interface; | |
343 | struct nfc_dev *nfc_dev; | |
344 | ||
345 | struct urb *out_urb; | |
c46ee386 AAJ |
346 | struct pn533_frame *out_frame; |
347 | ||
348 | struct urb *in_urb; | |
c46ee386 AAJ |
349 | struct pn533_frame *in_frame; |
350 | ||
6ff73fd2 SO |
351 | struct sk_buff_head resp_q; |
352 | ||
4849f85e SO |
353 | struct workqueue_struct *wq; |
354 | struct work_struct cmd_work; | |
5d50b364 | 355 | struct work_struct cmd_complete_work; |
6fbbdc16 | 356 | struct work_struct poll_work; |
6ff73fd2 | 357 | struct work_struct mi_work; |
103b34cf | 358 | struct work_struct tg_work; |
6fbbdc16 | 359 | struct timer_list listen_timer; |
4849f85e SO |
360 | struct pn533_frame *wq_in_frame; |
361 | int wq_in_error; | |
6fbbdc16 | 362 | int cancel_listen; |
c46ee386 AAJ |
363 | |
364 | pn533_cmd_complete_t cmd_complete; | |
365 | void *cmd_complete_arg; | |
0201ed03 | 366 | struct mutex cmd_lock; |
c46ee386 AAJ |
367 | u8 cmd; |
368 | ||
369 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
370 | u8 poll_mod_count; | |
371 | u8 poll_mod_curr; | |
372 | u32 poll_protocols; | |
6fbbdc16 SO |
373 | u32 listen_protocols; |
374 | ||
375 | u8 *gb; | |
376 | size_t gb_len; | |
c46ee386 AAJ |
377 | |
378 | u8 tgt_available_prots; | |
379 | u8 tgt_active_prot; | |
51ad304c | 380 | u8 tgt_mode; |
5c7b0531 SO |
381 | |
382 | u32 device_type; | |
5d50b364 SO |
383 | |
384 | struct list_head cmd_queue; | |
385 | u8 cmd_pending; | |
386 | }; | |
387 | ||
388 | struct pn533_cmd { | |
389 | struct list_head queue; | |
390 | struct pn533_frame *out_frame; | |
391 | struct pn533_frame *in_frame; | |
392 | int in_frame_len; | |
393 | pn533_cmd_complete_t cmd_complete; | |
394 | void *arg; | |
395 | gfp_t flags; | |
c46ee386 AAJ |
396 | }; |
397 | ||
398 | struct pn533_frame { | |
399 | u8 preamble; | |
400 | __be16 start_frame; | |
401 | u8 datalen; | |
402 | u8 datalen_checksum; | |
403 | u8 data[]; | |
404 | } __packed; | |
405 | ||
406 | /* The rule: value + checksum = 0 */ | |
407 | static inline u8 pn533_checksum(u8 value) | |
408 | { | |
409 | return ~value + 1; | |
410 | } | |
411 | ||
412 | /* The rule: sum(data elements) + checksum = 0 */ | |
413 | static u8 pn533_data_checksum(u8 *data, int datalen) | |
414 | { | |
415 | u8 sum = 0; | |
416 | int i; | |
417 | ||
418 | for (i = 0; i < datalen; i++) | |
419 | sum += data[i]; | |
420 | ||
421 | return pn533_checksum(sum); | |
422 | } | |
423 | ||
424 | /** | |
425 | * pn533_tx_frame_ack - create a ack frame | |
426 | * @frame: The frame to be set as ack | |
427 | * | |
428 | * Ack is different type of standard frame. As a standard frame, it has | |
429 | * preamble and start_frame. However the checksum of this frame must fail, | |
430 | * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test | |
431 | * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack. | |
432 | * After datalen_checksum field, the postamble is placed. | |
433 | */ | |
434 | static void pn533_tx_frame_ack(struct pn533_frame *frame) | |
435 | { | |
436 | frame->preamble = 0; | |
437 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
438 | frame->datalen = 0; | |
439 | frame->datalen_checksum = 0xFF; | |
440 | /* data[0] is used as postamble */ | |
441 | frame->data[0] = 0; | |
442 | } | |
443 | ||
444 | static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd) | |
445 | { | |
446 | frame->preamble = 0; | |
447 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
448 | PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT; | |
449 | PN533_FRAME_CMD(frame) = cmd; | |
450 | frame->datalen = 2; | |
451 | } | |
452 | ||
453 | static void pn533_tx_frame_finish(struct pn533_frame *frame) | |
454 | { | |
455 | frame->datalen_checksum = pn533_checksum(frame->datalen); | |
456 | ||
457 | PN533_FRAME_CHECKSUM(frame) = | |
458 | pn533_data_checksum(frame->data, frame->datalen); | |
459 | ||
460 | PN533_FRAME_POSTAMBLE(frame) = 0; | |
461 | } | |
462 | ||
463 | static bool pn533_rx_frame_is_valid(struct pn533_frame *frame) | |
464 | { | |
465 | u8 checksum; | |
466 | ||
467 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
468 | return false; | |
469 | ||
470 | checksum = pn533_checksum(frame->datalen); | |
471 | if (checksum != frame->datalen_checksum) | |
472 | return false; | |
473 | ||
474 | checksum = pn533_data_checksum(frame->data, frame->datalen); | |
475 | if (checksum != PN533_FRAME_CHECKSUM(frame)) | |
476 | return false; | |
477 | ||
478 | return true; | |
479 | } | |
480 | ||
481 | static bool pn533_rx_frame_is_ack(struct pn533_frame *frame) | |
482 | { | |
483 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
484 | return false; | |
485 | ||
486 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
487 | return false; | |
488 | ||
489 | return true; | |
490 | } | |
491 | ||
492 | static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd) | |
493 | { | |
494 | return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd)); | |
495 | } | |
496 | ||
4849f85e SO |
497 | |
498 | static void pn533_wq_cmd_complete(struct work_struct *work) | |
c46ee386 | 499 | { |
5d50b364 | 500 | struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); |
4849f85e | 501 | struct pn533_frame *in_frame; |
c46ee386 AAJ |
502 | int rc; |
503 | ||
4849f85e SO |
504 | in_frame = dev->wq_in_frame; |
505 | ||
506 | if (dev->wq_in_error) | |
c46ee386 | 507 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, NULL, |
4849f85e | 508 | dev->wq_in_error); |
c46ee386 AAJ |
509 | else |
510 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, | |
511 | PN533_FRAME_CMD_PARAMS_PTR(in_frame), | |
512 | PN533_FRAME_CMD_PARAMS_LEN(in_frame)); | |
513 | ||
514 | if (rc != -EINPROGRESS) | |
5d50b364 | 515 | queue_work(dev->wq, &dev->cmd_work); |
c46ee386 AAJ |
516 | } |
517 | ||
518 | static void pn533_recv_response(struct urb *urb) | |
519 | { | |
520 | struct pn533 *dev = urb->context; | |
521 | struct pn533_frame *in_frame; | |
522 | ||
4849f85e | 523 | dev->wq_in_frame = NULL; |
c46ee386 AAJ |
524 | |
525 | switch (urb->status) { | |
526 | case 0: | |
527 | /* success */ | |
528 | break; | |
529 | case -ECONNRESET: | |
530 | case -ENOENT: | |
531 | case -ESHUTDOWN: | |
532 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
533 | " status: %d", urb->status); | |
4849f85e SO |
534 | dev->wq_in_error = urb->status; |
535 | goto sched_wq; | |
c46ee386 AAJ |
536 | default: |
537 | nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:" | |
538 | " %d", urb->status); | |
4849f85e SO |
539 | dev->wq_in_error = urb->status; |
540 | goto sched_wq; | |
c46ee386 AAJ |
541 | } |
542 | ||
543 | in_frame = dev->in_urb->transfer_buffer; | |
544 | ||
545 | if (!pn533_rx_frame_is_valid(in_frame)) { | |
546 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); | |
4849f85e SO |
547 | dev->wq_in_error = -EIO; |
548 | goto sched_wq; | |
c46ee386 AAJ |
549 | } |
550 | ||
551 | if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) { | |
552 | nfc_dev_err(&dev->interface->dev, "The received frame is not " | |
553 | "response to the last command"); | |
4849f85e SO |
554 | dev->wq_in_error = -EIO; |
555 | goto sched_wq; | |
c46ee386 AAJ |
556 | } |
557 | ||
558 | nfc_dev_dbg(&dev->interface->dev, "Received a valid frame"); | |
4849f85e SO |
559 | dev->wq_in_error = 0; |
560 | dev->wq_in_frame = in_frame; | |
c46ee386 | 561 | |
4849f85e | 562 | sched_wq: |
5d50b364 | 563 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
564 | } |
565 | ||
566 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
567 | { | |
568 | dev->in_urb->complete = pn533_recv_response; | |
569 | ||
570 | return usb_submit_urb(dev->in_urb, flags); | |
571 | } | |
572 | ||
573 | static void pn533_recv_ack(struct urb *urb) | |
574 | { | |
575 | struct pn533 *dev = urb->context; | |
576 | struct pn533_frame *in_frame; | |
577 | int rc; | |
578 | ||
579 | switch (urb->status) { | |
580 | case 0: | |
581 | /* success */ | |
582 | break; | |
583 | case -ECONNRESET: | |
584 | case -ENOENT: | |
585 | case -ESHUTDOWN: | |
586 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
587 | " status: %d", urb->status); | |
4849f85e SO |
588 | dev->wq_in_error = urb->status; |
589 | goto sched_wq; | |
c46ee386 AAJ |
590 | default: |
591 | nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:" | |
592 | " %d", urb->status); | |
4849f85e SO |
593 | dev->wq_in_error = urb->status; |
594 | goto sched_wq; | |
c46ee386 AAJ |
595 | } |
596 | ||
597 | in_frame = dev->in_urb->transfer_buffer; | |
598 | ||
599 | if (!pn533_rx_frame_is_ack(in_frame)) { | |
600 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); | |
4849f85e SO |
601 | dev->wq_in_error = -EIO; |
602 | goto sched_wq; | |
c46ee386 AAJ |
603 | } |
604 | ||
605 | nfc_dev_dbg(&dev->interface->dev, "Received a valid ack"); | |
606 | ||
607 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); | |
608 | if (rc) { | |
609 | nfc_dev_err(&dev->interface->dev, "usb_submit_urb failed with" | |
610 | " result %d", rc); | |
4849f85e SO |
611 | dev->wq_in_error = rc; |
612 | goto sched_wq; | |
c46ee386 AAJ |
613 | } |
614 | ||
615 | return; | |
616 | ||
4849f85e SO |
617 | sched_wq: |
618 | dev->wq_in_frame = NULL; | |
5d50b364 | 619 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
620 | } |
621 | ||
622 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
623 | { | |
624 | dev->in_urb->complete = pn533_recv_ack; | |
625 | ||
626 | return usb_submit_urb(dev->in_urb, flags); | |
627 | } | |
628 | ||
629 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
630 | { | |
631 | int rc; | |
632 | ||
633 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
634 | ||
635 | pn533_tx_frame_ack(dev->out_frame); | |
636 | ||
637 | dev->out_urb->transfer_buffer = dev->out_frame; | |
638 | dev->out_urb->transfer_buffer_length = PN533_FRAME_ACK_SIZE; | |
639 | rc = usb_submit_urb(dev->out_urb, flags); | |
640 | ||
641 | return rc; | |
642 | } | |
643 | ||
644 | static int __pn533_send_cmd_frame_async(struct pn533 *dev, | |
645 | struct pn533_frame *out_frame, | |
646 | struct pn533_frame *in_frame, | |
647 | int in_frame_len, | |
648 | pn533_cmd_complete_t cmd_complete, | |
649 | void *arg, gfp_t flags) | |
650 | { | |
651 | int rc; | |
652 | ||
653 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", | |
654 | PN533_FRAME_CMD(out_frame)); | |
655 | ||
656 | dev->cmd = PN533_FRAME_CMD(out_frame); | |
657 | dev->cmd_complete = cmd_complete; | |
658 | dev->cmd_complete_arg = arg; | |
659 | ||
660 | dev->out_urb->transfer_buffer = out_frame; | |
661 | dev->out_urb->transfer_buffer_length = | |
662 | PN533_FRAME_SIZE(out_frame); | |
663 | ||
664 | dev->in_urb->transfer_buffer = in_frame; | |
665 | dev->in_urb->transfer_buffer_length = in_frame_len; | |
666 | ||
667 | rc = usb_submit_urb(dev->out_urb, flags); | |
668 | if (rc) | |
669 | return rc; | |
670 | ||
671 | rc = pn533_submit_urb_for_ack(dev, flags); | |
672 | if (rc) | |
673 | goto error; | |
674 | ||
675 | return 0; | |
676 | ||
677 | error: | |
678 | usb_unlink_urb(dev->out_urb); | |
679 | return rc; | |
680 | } | |
681 | ||
5d50b364 SO |
682 | static void pn533_wq_cmd(struct work_struct *work) |
683 | { | |
684 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); | |
685 | struct pn533_cmd *cmd; | |
686 | ||
687 | mutex_lock(&dev->cmd_lock); | |
688 | ||
689 | if (list_empty(&dev->cmd_queue)) { | |
690 | dev->cmd_pending = 0; | |
691 | mutex_unlock(&dev->cmd_lock); | |
692 | return; | |
693 | } | |
694 | ||
695 | cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); | |
696 | ||
60ad07ab SJ |
697 | list_del(&cmd->queue); |
698 | ||
5d50b364 SO |
699 | mutex_unlock(&dev->cmd_lock); |
700 | ||
701 | __pn533_send_cmd_frame_async(dev, cmd->out_frame, cmd->in_frame, | |
702 | cmd->in_frame_len, cmd->cmd_complete, | |
703 | cmd->arg, cmd->flags); | |
704 | ||
5d50b364 SO |
705 | kfree(cmd); |
706 | } | |
707 | ||
c46ee386 AAJ |
708 | static int pn533_send_cmd_frame_async(struct pn533 *dev, |
709 | struct pn533_frame *out_frame, | |
710 | struct pn533_frame *in_frame, | |
711 | int in_frame_len, | |
712 | pn533_cmd_complete_t cmd_complete, | |
713 | void *arg, gfp_t flags) | |
714 | { | |
5d50b364 | 715 | struct pn533_cmd *cmd; |
ee5e8d81 | 716 | int rc = 0; |
c46ee386 AAJ |
717 | |
718 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
719 | ||
5d50b364 | 720 | mutex_lock(&dev->cmd_lock); |
c46ee386 | 721 | |
5d50b364 SO |
722 | if (!dev->cmd_pending) { |
723 | rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame, | |
724 | in_frame_len, cmd_complete, | |
725 | arg, flags); | |
726 | if (!rc) | |
727 | dev->cmd_pending = 1; | |
728 | ||
ee5e8d81 | 729 | goto unlock; |
5d50b364 SO |
730 | } |
731 | ||
732 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__); | |
733 | ||
734 | cmd = kzalloc(sizeof(struct pn533_cmd), flags); | |
ee5e8d81 SJ |
735 | if (!cmd) { |
736 | rc = -ENOMEM; | |
737 | goto unlock; | |
738 | } | |
5d50b364 SO |
739 | |
740 | INIT_LIST_HEAD(&cmd->queue); | |
741 | cmd->out_frame = out_frame; | |
742 | cmd->in_frame = in_frame; | |
743 | cmd->in_frame_len = in_frame_len; | |
744 | cmd->cmd_complete = cmd_complete; | |
745 | cmd->arg = arg; | |
746 | cmd->flags = flags; | |
747 | ||
748 | list_add_tail(&cmd->queue, &dev->cmd_queue); | |
c46ee386 | 749 | |
ee5e8d81 | 750 | unlock: |
0201ed03 | 751 | mutex_unlock(&dev->cmd_lock); |
5d50b364 | 752 | |
ee5e8d81 | 753 | return rc; |
c46ee386 AAJ |
754 | } |
755 | ||
756 | struct pn533_sync_cmd_response { | |
757 | int rc; | |
758 | struct completion done; | |
759 | }; | |
760 | ||
761 | static int pn533_sync_cmd_complete(struct pn533 *dev, void *_arg, | |
762 | u8 *params, int params_len) | |
763 | { | |
764 | struct pn533_sync_cmd_response *arg = _arg; | |
765 | ||
766 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
767 | ||
768 | arg->rc = 0; | |
769 | ||
770 | if (params_len < 0) /* error */ | |
771 | arg->rc = params_len; | |
772 | ||
773 | complete(&arg->done); | |
774 | ||
775 | return 0; | |
776 | } | |
777 | ||
778 | static int pn533_send_cmd_frame_sync(struct pn533 *dev, | |
779 | struct pn533_frame *out_frame, | |
780 | struct pn533_frame *in_frame, | |
781 | int in_frame_len) | |
782 | { | |
783 | int rc; | |
784 | struct pn533_sync_cmd_response arg; | |
785 | ||
786 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
787 | ||
788 | init_completion(&arg.done); | |
789 | ||
790 | rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, in_frame_len, | |
791 | pn533_sync_cmd_complete, &arg, GFP_KERNEL); | |
792 | if (rc) | |
793 | return rc; | |
794 | ||
795 | wait_for_completion(&arg.done); | |
796 | ||
797 | return arg.rc; | |
798 | } | |
799 | ||
800 | static void pn533_send_complete(struct urb *urb) | |
801 | { | |
802 | struct pn533 *dev = urb->context; | |
803 | ||
804 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
805 | ||
806 | switch (urb->status) { | |
807 | case 0: | |
808 | /* success */ | |
809 | break; | |
810 | case -ECONNRESET: | |
811 | case -ENOENT: | |
812 | case -ESHUTDOWN: | |
813 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
814 | " status: %d", urb->status); | |
815 | break; | |
816 | default: | |
817 | nfc_dev_dbg(&dev->interface->dev, "Nonzero urb status received:" | |
818 | " %d", urb->status); | |
819 | } | |
820 | } | |
821 | ||
822 | struct pn533_target_type_a { | |
823 | __be16 sens_res; | |
824 | u8 sel_res; | |
825 | u8 nfcid_len; | |
826 | u8 nfcid_data[]; | |
827 | } __packed; | |
828 | ||
829 | ||
830 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
831 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
832 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
833 | ||
834 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
835 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
836 | ||
837 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
838 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
839 | ||
840 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
841 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
842 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
843 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
844 | ||
845 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
846 | int target_data_len) | |
847 | { | |
848 | u8 ssd; | |
849 | u8 platconf; | |
850 | ||
851 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
852 | return false; | |
853 | ||
854 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
855 | the values are not being used */ | |
856 | ||
857 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
858 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
859 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
860 | ||
861 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
862 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || | |
863 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
864 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
865 | return false; | |
866 | ||
867 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
868 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
869 | return false; | |
870 | ||
871 | return true; | |
872 | } | |
873 | ||
874 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
875 | int tgt_data_len) | |
876 | { | |
877 | struct pn533_target_type_a *tgt_type_a; | |
878 | ||
879 | tgt_type_a = (struct pn533_target_type_a *) tgt_data; | |
880 | ||
881 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
882 | return -EPROTO; | |
883 | ||
884 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
885 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
886 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
887 | break; | |
888 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
889 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
890 | break; | |
891 | case PN533_TYPE_A_SEL_PROT_DEP: | |
892 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
893 | break; | |
894 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
895 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
896 | NFC_PROTO_NFC_DEP_MASK; | |
897 | break; | |
898 | } | |
899 | ||
900 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
901 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
902 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
903 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
904 | |
905 | return 0; | |
906 | } | |
907 | ||
908 | struct pn533_target_felica { | |
909 | u8 pol_res; | |
910 | u8 opcode; | |
911 | u8 nfcid2[8]; | |
912 | u8 pad[8]; | |
913 | /* optional */ | |
914 | u8 syst_code[]; | |
915 | } __packed; | |
916 | ||
917 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
918 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
919 | ||
920 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
921 | int target_data_len) | |
922 | { | |
923 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
924 | return false; | |
925 | ||
926 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
927 | return false; | |
928 | ||
929 | return true; | |
930 | } | |
931 | ||
932 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
933 | int tgt_data_len) | |
934 | { | |
935 | struct pn533_target_felica *tgt_felica; | |
936 | ||
937 | tgt_felica = (struct pn533_target_felica *) tgt_data; | |
938 | ||
939 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
940 | return -EPROTO; | |
941 | ||
942 | if (tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1 && | |
943 | tgt_felica->nfcid2[1] == | |
944 | PN533_FELICA_SENSF_NFCID2_DEP_B2) | |
945 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
946 | else | |
947 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
948 | ||
7975754f SO |
949 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
950 | nfc_tgt->sensf_res_len = 9; | |
951 | ||
c46ee386 AAJ |
952 | return 0; |
953 | } | |
954 | ||
955 | struct pn533_target_jewel { | |
956 | __be16 sens_res; | |
957 | u8 jewelid[4]; | |
958 | } __packed; | |
959 | ||
960 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
961 | int target_data_len) | |
962 | { | |
963 | u8 ssd; | |
964 | u8 platconf; | |
965 | ||
966 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
967 | return false; | |
968 | ||
969 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
970 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
971 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
972 | ||
973 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
974 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || | |
975 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
976 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
977 | return false; | |
978 | ||
979 | return true; | |
980 | } | |
981 | ||
982 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
983 | int tgt_data_len) | |
984 | { | |
985 | struct pn533_target_jewel *tgt_jewel; | |
986 | ||
987 | tgt_jewel = (struct pn533_target_jewel *) tgt_data; | |
988 | ||
989 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
990 | return -EPROTO; | |
991 | ||
992 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
993 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
994 | nfc_tgt->nfcid1_len = 4; |
995 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
996 | |
997 | return 0; | |
998 | } | |
999 | ||
1000 | struct pn533_type_b_prot_info { | |
1001 | u8 bitrate; | |
1002 | u8 fsci_type; | |
1003 | u8 fwi_adc_fo; | |
1004 | } __packed; | |
1005 | ||
1006 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
1007 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
1008 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
1009 | ||
1010 | struct pn533_type_b_sens_res { | |
1011 | u8 opcode; | |
1012 | u8 nfcid[4]; | |
1013 | u8 appdata[4]; | |
1014 | struct pn533_type_b_prot_info prot_info; | |
1015 | } __packed; | |
1016 | ||
1017 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
1018 | ||
1019 | struct pn533_target_type_b { | |
1020 | struct pn533_type_b_sens_res sensb_res; | |
1021 | u8 attrib_res_len; | |
1022 | u8 attrib_res[]; | |
1023 | } __packed; | |
1024 | ||
1025 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
1026 | int target_data_len) | |
1027 | { | |
1028 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
1029 | return false; | |
1030 | ||
1031 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
1032 | return false; | |
1033 | ||
1034 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
1035 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
1036 | return false; | |
1037 | ||
1038 | return true; | |
1039 | } | |
1040 | ||
1041 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1042 | int tgt_data_len) | |
1043 | { | |
1044 | struct pn533_target_type_b *tgt_type_b; | |
1045 | ||
1046 | tgt_type_b = (struct pn533_target_type_b *) tgt_data; | |
1047 | ||
1048 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
1049 | return -EPROTO; | |
1050 | ||
01d719a2 | 1051 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
1052 | |
1053 | return 0; | |
1054 | } | |
1055 | ||
1056 | struct pn533_poll_response { | |
1057 | u8 nbtg; | |
1058 | u8 tg; | |
1059 | u8 target_data[]; | |
1060 | } __packed; | |
1061 | ||
1062 | static int pn533_target_found(struct pn533 *dev, | |
1063 | struct pn533_poll_response *resp, int resp_len) | |
1064 | { | |
1065 | int target_data_len; | |
1066 | struct nfc_target nfc_tgt; | |
1067 | int rc; | |
1068 | ||
1069 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
1070 | dev->poll_mod_curr); | |
1071 | ||
1072 | if (resp->tg != 1) | |
1073 | return -EPROTO; | |
1074 | ||
98b3ac1b SO |
1075 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1076 | ||
c46ee386 AAJ |
1077 | target_data_len = resp_len - sizeof(struct pn533_poll_response); |
1078 | ||
1079 | switch (dev->poll_mod_curr) { | |
1080 | case PN533_POLL_MOD_106KBPS_A: | |
1081 | rc = pn533_target_found_type_a(&nfc_tgt, resp->target_data, | |
1082 | target_data_len); | |
1083 | break; | |
1084 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1085 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1086 | rc = pn533_target_found_felica(&nfc_tgt, resp->target_data, | |
1087 | target_data_len); | |
1088 | break; | |
1089 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
1090 | rc = pn533_target_found_jewel(&nfc_tgt, resp->target_data, | |
1091 | target_data_len); | |
1092 | break; | |
1093 | case PN533_POLL_MOD_847KBPS_B: | |
1094 | rc = pn533_target_found_type_b(&nfc_tgt, resp->target_data, | |
1095 | target_data_len); | |
1096 | break; | |
1097 | default: | |
1098 | nfc_dev_err(&dev->interface->dev, "Unknown current poll" | |
1099 | " modulation"); | |
1100 | return -EPROTO; | |
1101 | } | |
1102 | ||
1103 | if (rc) | |
1104 | return rc; | |
1105 | ||
1106 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
1107 | nfc_dev_dbg(&dev->interface->dev, "The target found does not" | |
1108 | " have the desired protocol"); | |
1109 | return -EAGAIN; | |
1110 | } | |
1111 | ||
1112 | nfc_dev_dbg(&dev->interface->dev, "Target found - supported protocols: " | |
1113 | "0x%x", nfc_tgt.supported_protocols); | |
1114 | ||
1115 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1116 | ||
1117 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1118 | ||
1119 | return 0; | |
1120 | } | |
1121 | ||
6fbbdc16 SO |
1122 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1123 | { | |
1124 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1125 | } | |
1126 | ||
c46ee386 AAJ |
1127 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1128 | { | |
1129 | dev->poll_mod_count = 0; | |
1130 | } | |
1131 | ||
1132 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1133 | { | |
1134 | dev->poll_mod_active[dev->poll_mod_count] = | |
1135 | (struct pn533_poll_modulations *) &poll_mod[mod_index]; | |
1136 | dev->poll_mod_count++; | |
1137 | } | |
1138 | ||
6fbbdc16 SO |
1139 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1140 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1141 | { |
1142 | pn533_poll_reset_mod_list(dev); | |
1143 | ||
6fbbdc16 SO |
1144 | if (im_protocols & NFC_PROTO_MIFARE_MASK |
1145 | || im_protocols & NFC_PROTO_ISO14443_MASK | |
1146 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) | |
c46ee386 AAJ |
1147 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1148 | ||
6fbbdc16 SO |
1149 | if (im_protocols & NFC_PROTO_FELICA_MASK |
1150 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1151 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1152 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1153 | } | |
1154 | ||
6fbbdc16 | 1155 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1156 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1157 | ||
01d719a2 | 1158 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1159 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1160 | |
6fbbdc16 SO |
1161 | if (tm_protocols) |
1162 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1163 | } |
1164 | ||
ab34a181 | 1165 | static int pn533_start_poll_complete(struct pn533 *dev, u8 *params, int params_len) |
c46ee386 AAJ |
1166 | { |
1167 | struct pn533_poll_response *resp; | |
c46ee386 AAJ |
1168 | int rc; |
1169 | ||
1170 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1171 | ||
c46ee386 AAJ |
1172 | resp = (struct pn533_poll_response *) params; |
1173 | if (resp->nbtg) { | |
1174 | rc = pn533_target_found(dev, resp, params_len); | |
1175 | ||
1176 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1177 | if (rc == 0) { |
1178 | pn533_poll_reset_mod_list(dev); | |
1179 | return 0; | |
1180 | } | |
c46ee386 AAJ |
1181 | } |
1182 | ||
6fbbdc16 | 1183 | return -EAGAIN; |
c46ee386 AAJ |
1184 | } |
1185 | ||
ad3823ce SO |
1186 | static int pn533_init_target_frame(struct pn533_frame *frame, |
1187 | u8 *gb, size_t gb_len) | |
1188 | { | |
1189 | struct pn533_cmd_init_target *cmd; | |
1190 | size_t cmd_len; | |
51d9e803 SO |
1191 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1192 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1193 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1194 | 0xff, 0xff}; /* System code */ | |
1195 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ | |
1196 | 0x0, 0x0, 0x0, | |
1197 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce SO |
1198 | |
1199 | cmd_len = sizeof(struct pn533_cmd_init_target) + gb_len + 1; | |
1200 | cmd = kzalloc(cmd_len, GFP_KERNEL); | |
1201 | if (cmd == NULL) | |
1202 | return -ENOMEM; | |
1203 | ||
1204 | pn533_tx_frame_init(frame, PN533_CMD_TG_INIT_AS_TARGET); | |
1205 | ||
1206 | /* DEP support only */ | |
1207 | cmd->mode |= PN533_INIT_TARGET_DEP; | |
51d9e803 SO |
1208 | |
1209 | /* Felica params */ | |
1210 | memcpy(cmd->felica, felica_params, 18); | |
1211 | get_random_bytes(cmd->felica + 2, 6); | |
1212 | ||
1213 | /* NFCID3 */ | |
1214 | memset(cmd->nfcid3, 0, 10); | |
1215 | memcpy(cmd->nfcid3, cmd->felica, 8); | |
1216 | ||
1217 | /* MIFARE params */ | |
1218 | memcpy(cmd->mifare, mifare_params, 6); | |
1219 | ||
1220 | /* General bytes */ | |
ad3823ce SO |
1221 | cmd->gb_len = gb_len; |
1222 | memcpy(cmd->gb, gb, gb_len); | |
51d9e803 | 1223 | |
ad3823ce SO |
1224 | /* Len Tk */ |
1225 | cmd->gb[gb_len] = 0; | |
1226 | ||
1227 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), cmd, cmd_len); | |
51d9e803 | 1228 | |
ad3823ce SO |
1229 | frame->datalen += cmd_len; |
1230 | ||
1231 | pn533_tx_frame_finish(frame); | |
1232 | ||
51d9e803 SO |
1233 | kfree(cmd); |
1234 | ||
ad3823ce SO |
1235 | return 0; |
1236 | } | |
1237 | ||
b1bb290a | 1238 | #define PN533_CMD_DATAEXCH_HEAD_LEN 1 |
103b34cf SO |
1239 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 |
1240 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
1241 | u8 *params, int params_len) | |
1242 | { | |
1243 | struct sk_buff *skb_resp = arg; | |
1244 | struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data; | |
1245 | ||
1246 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1247 | ||
1248 | if (params_len < 0) { | |
1249 | nfc_dev_err(&dev->interface->dev, | |
1250 | "Error %d when starting as a target", | |
1251 | params_len); | |
1252 | ||
1253 | return params_len; | |
1254 | } | |
1255 | ||
1256 | if (params_len > 0 && params[0] != 0) { | |
1257 | nfc_tm_deactivated(dev->nfc_dev); | |
1258 | ||
51ad304c SO |
1259 | dev->tgt_mode = 0; |
1260 | ||
103b34cf SO |
1261 | kfree_skb(skb_resp); |
1262 | return 0; | |
1263 | } | |
1264 | ||
1265 | skb_put(skb_resp, PN533_FRAME_SIZE(in_frame)); | |
b1bb290a WR |
1266 | skb_pull(skb_resp, |
1267 | PN533_FRAME_HEADER_LEN + PN533_CMD_DATAEXCH_HEAD_LEN); | |
1268 | skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_LEN); | |
103b34cf SO |
1269 | |
1270 | return nfc_tm_data_received(dev->nfc_dev, skb_resp); | |
1271 | } | |
1272 | ||
1273 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1274 | { | |
1275 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
1276 | struct pn533_frame *in_frame; | |
1277 | struct sk_buff *skb_resp; | |
1278 | size_t skb_resp_len; | |
1279 | ||
1280 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1281 | ||
b1bb290a WR |
1282 | skb_resp_len = PN533_FRAME_HEADER_LEN + |
1283 | PN533_CMD_DATAEXCH_HEAD_LEN + | |
1284 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
1285 | PN533_FRAME_TAIL_LEN; | |
103b34cf SO |
1286 | |
1287 | skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL); | |
1288 | if (!skb_resp) | |
1289 | return; | |
1290 | ||
1291 | in_frame = (struct pn533_frame *)skb_resp->data; | |
1292 | ||
1293 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_TG_GET_DATA); | |
1294 | pn533_tx_frame_finish(dev->out_frame); | |
1295 | ||
1296 | pn533_send_cmd_frame_async(dev, dev->out_frame, in_frame, | |
1297 | skb_resp_len, | |
1298 | pn533_tm_get_data_complete, | |
1299 | skb_resp, GFP_KERNEL); | |
1300 | ||
1301 | return; | |
1302 | } | |
1303 | ||
fc40a8c1 | 1304 | #define ATR_REQ_GB_OFFSET 17 |
ab34a181 | 1305 | static int pn533_init_target_complete(struct pn533 *dev, u8 *params, int params_len) |
fe7c5800 | 1306 | { |
ad3823ce | 1307 | struct pn533_cmd_init_target_response *resp; |
fc40a8c1 SO |
1308 | u8 frame, comm_mode = NFC_COMM_PASSIVE, *gb; |
1309 | size_t gb_len; | |
103b34cf | 1310 | int rc; |
ad3823ce SO |
1311 | |
1312 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1313 | ||
1314 | if (params_len < 0) { | |
1315 | nfc_dev_err(&dev->interface->dev, | |
1316 | "Error %d when starting as a target", | |
1317 | params_len); | |
1318 | ||
1319 | return params_len; | |
1320 | } | |
1321 | ||
fc40a8c1 SO |
1322 | if (params_len < ATR_REQ_GB_OFFSET + 1) |
1323 | return -EINVAL; | |
1324 | ||
ad3823ce SO |
1325 | resp = (struct pn533_cmd_init_target_response *) params; |
1326 | ||
fc40a8c1 SO |
1327 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x param len %d\n", |
1328 | resp->mode, params_len); | |
ad3823ce | 1329 | |
fc40a8c1 SO |
1330 | frame = resp->mode & PN533_INIT_TARGET_RESP_FRAME_MASK; |
1331 | if (frame == PN533_INIT_TARGET_RESP_ACTIVE) | |
1332 | comm_mode = NFC_COMM_ACTIVE; | |
1333 | ||
1334 | /* Again, only DEP */ | |
1335 | if ((resp->mode & PN533_INIT_TARGET_RESP_DEP) == 0) | |
1336 | return -EOPNOTSUPP; | |
1337 | ||
1338 | gb = resp->cmd + ATR_REQ_GB_OFFSET; | |
1339 | gb_len = params_len - (ATR_REQ_GB_OFFSET + 1); | |
1340 | ||
103b34cf SO |
1341 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1342 | comm_mode, gb, gb_len); | |
1343 | if (rc < 0) { | |
1344 | nfc_dev_err(&dev->interface->dev, | |
1345 | "Error when signaling target activation"); | |
1346 | return rc; | |
1347 | } | |
1348 | ||
51ad304c SO |
1349 | dev->tgt_mode = 1; |
1350 | ||
103b34cf SO |
1351 | queue_work(dev->wq, &dev->tg_work); |
1352 | ||
1353 | return 0; | |
fe7c5800 SO |
1354 | } |
1355 | ||
6fbbdc16 | 1356 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1357 | { |
6fbbdc16 SO |
1358 | struct pn533 *dev = (struct pn533 *) data; |
1359 | ||
1360 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1361 | ||
1362 | /* An ack will cancel the last issued command (poll) */ | |
1363 | pn533_send_ack(dev, GFP_ATOMIC); | |
1364 | ||
1365 | dev->cancel_listen = 1; | |
1366 | ||
6fbbdc16 SO |
1367 | pn533_poll_next_mod(dev); |
1368 | ||
1369 | queue_work(dev->wq, &dev->poll_work); | |
1370 | } | |
1371 | ||
1372 | static int pn533_poll_complete(struct pn533 *dev, void *arg, | |
1373 | u8 *params, int params_len) | |
1374 | { | |
1375 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1376 | int rc; |
1377 | ||
6fbbdc16 | 1378 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1379 | |
6fbbdc16 SO |
1380 | if (params_len == -ENOENT) { |
1381 | if (dev->poll_mod_count != 0) | |
1382 | return 0; | |
ad3823ce | 1383 | |
6fbbdc16 SO |
1384 | nfc_dev_err(&dev->interface->dev, |
1385 | "Polling operation has been stopped"); | |
ad3823ce | 1386 | |
6fbbdc16 SO |
1387 | goto stop_poll; |
1388 | } | |
ad3823ce | 1389 | |
6fbbdc16 | 1390 | if (params_len < 0) { |
ad3823ce | 1391 | nfc_dev_err(&dev->interface->dev, |
6fbbdc16 | 1392 | "Error %d when running poll", params_len); |
ad3823ce | 1393 | |
6fbbdc16 SO |
1394 | goto stop_poll; |
1395 | } | |
ad3823ce | 1396 | |
6fbbdc16 SO |
1397 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1398 | ||
1399 | if (cur_mod->len == 0) { | |
1400 | del_timer(&dev->listen_timer); | |
1401 | ||
ab34a181 | 1402 | return pn533_init_target_complete(dev, params, params_len); |
6fbbdc16 | 1403 | } else { |
ab34a181 | 1404 | rc = pn533_start_poll_complete(dev, params, params_len); |
6fbbdc16 SO |
1405 | if (!rc) |
1406 | return rc; | |
1407 | } | |
1408 | ||
1409 | pn533_poll_next_mod(dev); | |
1410 | ||
1411 | queue_work(dev->wq, &dev->poll_work); | |
1412 | ||
1413 | return 0; | |
1414 | ||
1415 | stop_poll: | |
1416 | pn533_poll_reset_mod_list(dev); | |
1417 | dev->poll_protocols = 0; | |
1418 | return 0; | |
ad3823ce SO |
1419 | } |
1420 | ||
6fbbdc16 SO |
1421 | static void pn533_build_poll_frame(struct pn533 *dev, |
1422 | struct pn533_frame *frame, | |
1423 | struct pn533_poll_modulations *mod) | |
c46ee386 | 1424 | { |
6fbbdc16 | 1425 | nfc_dev_dbg(&dev->interface->dev, "mod len %d\n", mod->len); |
c46ee386 | 1426 | |
6fbbdc16 SO |
1427 | if (mod->len == 0) { |
1428 | /* Listen mode */ | |
1429 | pn533_init_target_frame(frame, dev->gb, dev->gb_len); | |
1430 | } else { | |
1431 | /* Polling mode */ | |
1432 | pn533_tx_frame_init(frame, PN533_CMD_IN_LIST_PASSIVE_TARGET); | |
c46ee386 | 1433 | |
6fbbdc16 SO |
1434 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), &mod->data, mod->len); |
1435 | frame->datalen += mod->len; | |
c46ee386 | 1436 | |
6fbbdc16 | 1437 | pn533_tx_frame_finish(frame); |
c46ee386 | 1438 | } |
6fbbdc16 | 1439 | } |
c46ee386 | 1440 | |
6fbbdc16 SO |
1441 | static int pn533_send_poll_frame(struct pn533 *dev) |
1442 | { | |
1443 | struct pn533_poll_modulations *cur_mod; | |
1444 | int rc; | |
c46ee386 | 1445 | |
6fbbdc16 | 1446 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1447 | |
6fbbdc16 | 1448 | pn533_build_poll_frame(dev, dev->out_frame, cur_mod); |
c46ee386 AAJ |
1449 | |
1450 | rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame, | |
8d25ca79 WR |
1451 | PN533_NORMAL_FRAME_MAX_LEN, |
1452 | pn533_poll_complete, | |
1453 | NULL, GFP_KERNEL); | |
6fbbdc16 SO |
1454 | if (rc) |
1455 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); | |
c46ee386 | 1456 | |
6fbbdc16 SO |
1457 | return rc; |
1458 | } | |
1459 | ||
1460 | static void pn533_wq_poll(struct work_struct *work) | |
1461 | { | |
1462 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1463 | struct pn533_poll_modulations *cur_mod; | |
1464 | int rc; | |
1465 | ||
1466 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1467 | ||
1468 | nfc_dev_dbg(&dev->interface->dev, | |
1469 | "%s cancel_listen %d modulation len %d", | |
1470 | __func__, dev->cancel_listen, cur_mod->len); | |
1471 | ||
1472 | if (dev->cancel_listen == 1) { | |
1473 | dev->cancel_listen = 0; | |
1474 | usb_kill_urb(dev->in_urb); | |
c46ee386 AAJ |
1475 | } |
1476 | ||
6fbbdc16 SO |
1477 | rc = pn533_send_poll_frame(dev); |
1478 | if (rc) | |
1479 | return; | |
c46ee386 | 1480 | |
6fbbdc16 SO |
1481 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1482 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1483 | |
6fbbdc16 | 1484 | return; |
c46ee386 AAJ |
1485 | } |
1486 | ||
fe7c5800 SO |
1487 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1488 | u32 im_protocols, u32 tm_protocols) | |
1489 | { | |
1490 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1491 | ||
1492 | nfc_dev_dbg(&dev->interface->dev, | |
1493 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1494 | __func__, im_protocols, tm_protocols); | |
1495 | ||
1496 | if (dev->tgt_active_prot) { | |
1497 | nfc_dev_err(&dev->interface->dev, | |
1498 | "Cannot poll with a target already activated"); | |
1499 | return -EBUSY; | |
1500 | } | |
1501 | ||
51ad304c SO |
1502 | if (dev->tgt_mode) { |
1503 | nfc_dev_err(&dev->interface->dev, | |
1504 | "Cannot poll while already being activated"); | |
1505 | return -EBUSY; | |
1506 | } | |
1507 | ||
6fbbdc16 SO |
1508 | if (tm_protocols) { |
1509 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1510 | if (dev->gb == NULL) | |
1511 | tm_protocols = 0; | |
1512 | } | |
ad3823ce | 1513 | |
6fbbdc16 SO |
1514 | dev->poll_mod_curr = 0; |
1515 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1516 | dev->poll_protocols = im_protocols; | |
1517 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1518 | |
6fbbdc16 | 1519 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1520 | } |
1521 | ||
c46ee386 AAJ |
1522 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1523 | { | |
1524 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1525 | ||
1526 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1527 | ||
6fbbdc16 SO |
1528 | del_timer(&dev->listen_timer); |
1529 | ||
c46ee386 AAJ |
1530 | if (!dev->poll_mod_count) { |
1531 | nfc_dev_dbg(&dev->interface->dev, "Polling operation was not" | |
1532 | " running"); | |
1533 | return; | |
1534 | } | |
1535 | ||
1536 | /* An ack will cancel the last issued command (poll) */ | |
1537 | pn533_send_ack(dev, GFP_KERNEL); | |
1538 | ||
1539 | /* prevent pn533_start_poll_complete to issue a new poll meanwhile */ | |
1540 | usb_kill_urb(dev->in_urb); | |
7c2a04a9 SO |
1541 | |
1542 | pn533_poll_reset_mod_list(dev); | |
c46ee386 AAJ |
1543 | } |
1544 | ||
1545 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1546 | { | |
1547 | struct pn533_cmd_activate_param param; | |
1548 | struct pn533_cmd_activate_response *resp; | |
541d920b | 1549 | u16 gt_len; |
c46ee386 AAJ |
1550 | int rc; |
1551 | ||
1552 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1553 | ||
1554 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_ATR); | |
1555 | ||
1556 | param.tg = 1; | |
1557 | param.next = 0; | |
1558 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), ¶m, | |
1559 | sizeof(struct pn533_cmd_activate_param)); | |
1560 | dev->out_frame->datalen += sizeof(struct pn533_cmd_activate_param); | |
1561 | ||
1562 | pn533_tx_frame_finish(dev->out_frame); | |
1563 | ||
1564 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
8d25ca79 | 1565 | PN533_NORMAL_FRAME_MAX_LEN); |
c46ee386 AAJ |
1566 | if (rc) |
1567 | return rc; | |
1568 | ||
1569 | resp = (struct pn533_cmd_activate_response *) | |
1570 | PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame); | |
1571 | rc = resp->status & PN533_CMD_RET_MASK; | |
1572 | if (rc != PN533_CMD_RET_SUCCESS) | |
1573 | return -EIO; | |
1574 | ||
541d920b SO |
1575 | /* ATR_RES general bytes are located at offset 16 */ |
1576 | gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 16; | |
1577 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, resp->gt, gt_len); | |
1578 | ||
1579 | return rc; | |
c46ee386 AAJ |
1580 | } |
1581 | ||
90099433 EL |
1582 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1583 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1584 | { |
1585 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1586 | int rc; | |
1587 | ||
1588 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
1589 | protocol); | |
1590 | ||
1591 | if (dev->poll_mod_count) { | |
1592 | nfc_dev_err(&dev->interface->dev, "Cannot activate while" | |
1593 | " polling"); | |
1594 | return -EBUSY; | |
1595 | } | |
1596 | ||
1597 | if (dev->tgt_active_prot) { | |
1598 | nfc_dev_err(&dev->interface->dev, "There is already an active" | |
1599 | " target"); | |
1600 | return -EBUSY; | |
1601 | } | |
1602 | ||
1603 | if (!dev->tgt_available_prots) { | |
1604 | nfc_dev_err(&dev->interface->dev, "There is no available target" | |
1605 | " to activate"); | |
1606 | return -EINVAL; | |
1607 | } | |
1608 | ||
1609 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
1610 | nfc_dev_err(&dev->interface->dev, "The target does not support" | |
1611 | " the requested protocol %u", protocol); | |
1612 | return -EINVAL; | |
1613 | } | |
1614 | ||
1615 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1616 | rc = pn533_activate_target_nfcdep(dev); | |
1617 | if (rc) { | |
1618 | nfc_dev_err(&dev->interface->dev, "Error %d when" | |
1619 | " activating target with" | |
1620 | " NFC_DEP protocol", rc); | |
1621 | return rc; | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | dev->tgt_active_prot = protocol; | |
1626 | dev->tgt_available_prots = 0; | |
1627 | ||
1628 | return 0; | |
1629 | } | |
1630 | ||
90099433 EL |
1631 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1632 | struct nfc_target *target) | |
c46ee386 AAJ |
1633 | { |
1634 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1635 | u8 tg; | |
1636 | u8 status; | |
1637 | int rc; | |
1638 | ||
1639 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1640 | ||
1641 | if (!dev->tgt_active_prot) { | |
1642 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
1643 | return; | |
1644 | } | |
1645 | ||
1646 | dev->tgt_active_prot = 0; | |
1647 | ||
6ff73fd2 SO |
1648 | skb_queue_purge(&dev->resp_q); |
1649 | ||
c46ee386 AAJ |
1650 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_RELEASE); |
1651 | ||
1652 | tg = 1; | |
1653 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), &tg, sizeof(u8)); | |
1654 | dev->out_frame->datalen += sizeof(u8); | |
1655 | ||
1656 | pn533_tx_frame_finish(dev->out_frame); | |
1657 | ||
1658 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
8d25ca79 | 1659 | PN533_NORMAL_FRAME_MAX_LEN); |
c46ee386 AAJ |
1660 | if (rc) { |
1661 | nfc_dev_err(&dev->interface->dev, "Error when sending release" | |
1662 | " command to the controller"); | |
1663 | return; | |
1664 | } | |
1665 | ||
1666 | status = PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame)[0]; | |
1667 | rc = status & PN533_CMD_RET_MASK; | |
1668 | if (rc != PN533_CMD_RET_SUCCESS) | |
1669 | nfc_dev_err(&dev->interface->dev, "Error 0x%x when releasing" | |
1670 | " the target", rc); | |
1671 | ||
1672 | return; | |
1673 | } | |
1674 | ||
361f3cb7 SO |
1675 | |
1676 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
1677 | u8 *params, int params_len) | |
1678 | { | |
361f3cb7 SO |
1679 | struct pn533_cmd_jump_dep_response *resp; |
1680 | struct nfc_target nfc_target; | |
1681 | u8 target_gt_len; | |
1682 | int rc; | |
70418e6e WR |
1683 | struct pn533_cmd_jump_dep *cmd = (struct pn533_cmd_jump_dep *)arg; |
1684 | u8 active = cmd->active; | |
1685 | ||
1686 | kfree(arg); | |
361f3cb7 SO |
1687 | |
1688 | if (params_len == -ENOENT) { | |
1689 | nfc_dev_dbg(&dev->interface->dev, ""); | |
1690 | return 0; | |
1691 | } | |
1692 | ||
1693 | if (params_len < 0) { | |
1694 | nfc_dev_err(&dev->interface->dev, | |
1695 | "Error %d when bringing DEP link up", | |
1696 | params_len); | |
1697 | return 0; | |
1698 | } | |
1699 | ||
1700 | if (dev->tgt_available_prots && | |
1701 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
1702 | nfc_dev_err(&dev->interface->dev, | |
1703 | "The target does not support DEP"); | |
1704 | return -EINVAL; | |
1705 | } | |
1706 | ||
1707 | resp = (struct pn533_cmd_jump_dep_response *) params; | |
361f3cb7 SO |
1708 | rc = resp->status & PN533_CMD_RET_MASK; |
1709 | if (rc != PN533_CMD_RET_SUCCESS) { | |
1710 | nfc_dev_err(&dev->interface->dev, | |
1711 | "Bringing DEP link up failed %d", rc); | |
1712 | return 0; | |
1713 | } | |
1714 | ||
1715 | if (!dev->tgt_available_prots) { | |
1716 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); | |
1717 | ||
1718 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 SO |
1719 | nfc_target.nfcid1_len = 10; |
1720 | memcpy(nfc_target.nfcid1, resp->nfcid3t, nfc_target.nfcid1_len); | |
361f3cb7 SO |
1721 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
1722 | if (rc) | |
1723 | return 0; | |
1724 | ||
1725 | dev->tgt_available_prots = 0; | |
1726 | } | |
1727 | ||
1728 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
1729 | ||
1730 | /* ATR_RES general bytes are located at offset 17 */ | |
1731 | target_gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 17; | |
1732 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, | |
1733 | resp->gt, target_gt_len); | |
1734 | if (rc == 0) | |
1735 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
1736 | dev->nfc_dev->targets[0].idx, | |
70418e6e | 1737 | !active, NFC_RF_INITIATOR); |
361f3cb7 SO |
1738 | |
1739 | return 0; | |
1740 | } | |
1741 | ||
41a8ec49 SO |
1742 | static int pn533_mod_to_baud(struct pn533 *dev) |
1743 | { | |
1744 | switch (dev->poll_mod_curr) { | |
1745 | case PN533_POLL_MOD_106KBPS_A: | |
1746 | return 0; | |
1747 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1748 | return 1; | |
1749 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1750 | return 2; | |
1751 | default: | |
1752 | return -EINVAL; | |
1753 | } | |
1754 | } | |
1755 | ||
d7f3345d | 1756 | #define PASSIVE_DATA_LEN 5 |
90099433 | 1757 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
47807d3d | 1758 | u8 comm_mode, u8* gb, size_t gb_len) |
361f3cb7 SO |
1759 | { |
1760 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1761 | struct pn533_cmd_jump_dep *cmd; | |
d7f3345d SO |
1762 | u8 cmd_len, *data_ptr; |
1763 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; | |
41a8ec49 | 1764 | int rc, baud; |
361f3cb7 SO |
1765 | |
1766 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1767 | ||
361f3cb7 SO |
1768 | if (dev->poll_mod_count) { |
1769 | nfc_dev_err(&dev->interface->dev, | |
1770 | "Cannot bring the DEP link up while polling"); | |
1771 | return -EBUSY; | |
1772 | } | |
1773 | ||
1774 | if (dev->tgt_active_prot) { | |
1775 | nfc_dev_err(&dev->interface->dev, | |
1776 | "There is already an active target"); | |
1777 | return -EBUSY; | |
1778 | } | |
1779 | ||
41a8ec49 SO |
1780 | baud = pn533_mod_to_baud(dev); |
1781 | if (baud < 0) { | |
1782 | nfc_dev_err(&dev->interface->dev, | |
1783 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
1784 | return baud; | |
1785 | } | |
1786 | ||
47807d3d | 1787 | cmd_len = sizeof(struct pn533_cmd_jump_dep) + gb_len; |
d7f3345d SO |
1788 | if (comm_mode == NFC_COMM_PASSIVE) |
1789 | cmd_len += PASSIVE_DATA_LEN; | |
1790 | ||
361f3cb7 SO |
1791 | cmd = kzalloc(cmd_len, GFP_KERNEL); |
1792 | if (cmd == NULL) | |
1793 | return -ENOMEM; | |
1794 | ||
1795 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_JUMP_FOR_DEP); | |
1796 | ||
1797 | cmd->active = !comm_mode; | |
d7f3345d | 1798 | cmd->next = 0; |
41a8ec49 | 1799 | cmd->baud = baud; |
d7f3345d SO |
1800 | data_ptr = cmd->data; |
1801 | if (comm_mode == NFC_COMM_PASSIVE && cmd->baud > 0) { | |
1802 | memcpy(data_ptr, passive_data, PASSIVE_DATA_LEN); | |
1803 | cmd->next |= 1; | |
1804 | data_ptr += PASSIVE_DATA_LEN; | |
1805 | } | |
1806 | ||
47807d3d | 1807 | if (gb != NULL && gb_len > 0) { |
d7f3345d SO |
1808 | cmd->next |= 4; /* We have some Gi */ |
1809 | memcpy(data_ptr, gb, gb_len); | |
361f3cb7 SO |
1810 | } else { |
1811 | cmd->next = 0; | |
1812 | } | |
1813 | ||
1814 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), cmd, cmd_len); | |
1815 | dev->out_frame->datalen += cmd_len; | |
1816 | ||
1817 | pn533_tx_frame_finish(dev->out_frame); | |
1818 | ||
1819 | rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame, | |
8d25ca79 WR |
1820 | PN533_NORMAL_FRAME_MAX_LEN, |
1821 | pn533_in_dep_link_up_complete, cmd, | |
1822 | GFP_KERNEL); | |
770f750b SJ |
1823 | if (rc < 0) |
1824 | kfree(cmd); | |
361f3cb7 SO |
1825 | |
1826 | return rc; | |
1827 | } | |
1828 | ||
1829 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
1830 | { | |
6fbbdc16 SO |
1831 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
1832 | ||
1833 | pn533_poll_reset_mod_list(dev); | |
1834 | ||
51ad304c SO |
1835 | if (dev->tgt_mode || dev->tgt_active_prot) { |
1836 | pn533_send_ack(dev, GFP_KERNEL); | |
1837 | usb_kill_urb(dev->in_urb); | |
1838 | } | |
1839 | ||
1840 | dev->tgt_active_prot = 0; | |
1841 | dev->tgt_mode = 0; | |
1842 | ||
1843 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
1844 | |
1845 | return 0; | |
1846 | } | |
1847 | ||
dadb06f2 SO |
1848 | static int pn533_build_tx_frame(struct pn533 *dev, struct sk_buff *skb, |
1849 | bool target) | |
c46ee386 AAJ |
1850 | { |
1851 | int payload_len = skb->len; | |
1852 | struct pn533_frame *out_frame; | |
c46ee386 AAJ |
1853 | u8 tg; |
1854 | ||
1855 | nfc_dev_dbg(&dev->interface->dev, "%s - Sending %d bytes", __func__, | |
1856 | payload_len); | |
1857 | ||
1858 | if (payload_len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { | |
1859 | /* TODO: Implement support to multi-part data exchange */ | |
1860 | nfc_dev_err(&dev->interface->dev, "Data length greater than the" | |
1861 | " max allowed: %d", | |
1862 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
1863 | return -ENOSYS; | |
1864 | } | |
1865 | ||
b1bb290a WR |
1866 | skb_push(skb, PN533_FRAME_HEADER_LEN); |
1867 | ||
dadb06f2 | 1868 | if (target == true) { |
5c7b0531 | 1869 | switch (dev->device_type) { |
a1fbbf18 SO |
1870 | case PN533_DEVICE_PASORI: |
1871 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
a1fbbf18 SO |
1872 | out_frame = (struct pn533_frame *) skb->data; |
1873 | pn533_tx_frame_init(out_frame, | |
1874 | PN533_CMD_IN_COMM_THRU); | |
1875 | ||
1876 | break; | |
1877 | } | |
1878 | ||
1879 | default: | |
5c7b0531 SO |
1880 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN); |
1881 | out_frame = (struct pn533_frame *) skb->data; | |
1882 | pn533_tx_frame_init(out_frame, | |
1883 | PN533_CMD_IN_DATA_EXCHANGE); | |
1884 | tg = 1; | |
1885 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(out_frame), | |
1886 | &tg, sizeof(u8)); | |
1887 | out_frame->datalen += sizeof(u8); | |
5c7b0531 SO |
1888 | |
1889 | break; | |
5c7b0531 | 1890 | } |
c46ee386 | 1891 | |
dadb06f2 SO |
1892 | } else { |
1893 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN - 1); | |
1894 | out_frame = (struct pn533_frame *) skb->data; | |
1895 | pn533_tx_frame_init(out_frame, PN533_CMD_TG_SET_DATA); | |
1896 | } | |
c46ee386 | 1897 | |
c46ee386 AAJ |
1898 | |
1899 | /* The data is already in the out_frame, just update the datalen */ | |
1900 | out_frame->datalen += payload_len; | |
1901 | ||
1902 | pn533_tx_frame_finish(out_frame); | |
b1bb290a | 1903 | skb_put(skb, PN533_FRAME_TAIL_LEN); |
c46ee386 AAJ |
1904 | |
1905 | return 0; | |
1906 | } | |
1907 | ||
1908 | struct pn533_data_exchange_arg { | |
1909 | struct sk_buff *skb_resp; | |
1910 | struct sk_buff *skb_out; | |
1911 | data_exchange_cb_t cb; | |
1912 | void *cb_context; | |
1913 | }; | |
1914 | ||
6ff73fd2 SO |
1915 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
1916 | { | |
1917 | struct sk_buff *skb, *tmp, *t; | |
1918 | unsigned int skb_len = 0, tmp_len = 0; | |
1919 | ||
1920 | nfc_dev_dbg(&dev->interface->dev, "%s\n", __func__); | |
1921 | ||
1922 | if (skb_queue_empty(&dev->resp_q)) | |
1923 | return NULL; | |
1924 | ||
1925 | if (skb_queue_len(&dev->resp_q) == 1) { | |
1926 | skb = skb_dequeue(&dev->resp_q); | |
1927 | goto out; | |
1928 | } | |
1929 | ||
1930 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
1931 | skb_len += tmp->len; | |
1932 | ||
1933 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
1934 | __func__, skb_len); | |
1935 | ||
1936 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
1937 | if (skb == NULL) | |
1938 | goto out; | |
1939 | ||
1940 | skb_put(skb, skb_len); | |
1941 | ||
1942 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
1943 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
1944 | tmp_len += tmp->len; | |
1945 | } | |
1946 | ||
1947 | out: | |
1948 | skb_queue_purge(&dev->resp_q); | |
1949 | ||
1950 | return skb; | |
1951 | } | |
1952 | ||
c46ee386 AAJ |
1953 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
1954 | u8 *params, int params_len) | |
1955 | { | |
1956 | struct pn533_data_exchange_arg *arg = _arg; | |
6ff73fd2 | 1957 | struct sk_buff *skb = NULL, *skb_resp = arg->skb_resp; |
c46ee386 AAJ |
1958 | struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data; |
1959 | int err = 0; | |
1960 | u8 status; | |
1961 | u8 cmd_ret; | |
1962 | ||
1963 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1964 | ||
6ff73fd2 | 1965 | dev_kfree_skb(arg->skb_out); |
c46ee386 AAJ |
1966 | |
1967 | if (params_len < 0) { /* error */ | |
1968 | err = params_len; | |
1969 | goto error; | |
1970 | } | |
1971 | ||
c46ee386 AAJ |
1972 | status = params[0]; |
1973 | ||
1974 | cmd_ret = status & PN533_CMD_RET_MASK; | |
1975 | if (cmd_ret != PN533_CMD_RET_SUCCESS) { | |
1976 | nfc_dev_err(&dev->interface->dev, "PN533 reported error %d when" | |
1977 | " exchanging data", cmd_ret); | |
1978 | err = -EIO; | |
1979 | goto error; | |
1980 | } | |
1981 | ||
6ff73fd2 | 1982 | skb_put(skb_resp, PN533_FRAME_SIZE(in_frame)); |
b1bb290a | 1983 | skb_pull(skb_resp, PN533_FRAME_HEADER_LEN); |
6ff73fd2 | 1984 | skb_pull(skb_resp, PN533_CMD_DATAEXCH_HEAD_LEN); |
b1bb290a | 1985 | skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_LEN); |
6ff73fd2 SO |
1986 | skb_queue_tail(&dev->resp_q, skb_resp); |
1987 | ||
c46ee386 | 1988 | if (status & PN533_CMD_MI_MASK) { |
6ff73fd2 SO |
1989 | queue_work(dev->wq, &dev->mi_work); |
1990 | return -EINPROGRESS; | |
c46ee386 AAJ |
1991 | } |
1992 | ||
6ff73fd2 SO |
1993 | skb = pn533_build_response(dev); |
1994 | if (skb == NULL) | |
1995 | goto error; | |
c46ee386 | 1996 | |
6ff73fd2 | 1997 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
1998 | kfree(arg); |
1999 | return 0; | |
2000 | ||
2001 | error: | |
6ff73fd2 SO |
2002 | skb_queue_purge(&dev->resp_q); |
2003 | dev_kfree_skb(skb_resp); | |
c46ee386 AAJ |
2004 | arg->cb(arg->cb_context, NULL, err); |
2005 | kfree(arg); | |
2006 | return 0; | |
2007 | } | |
2008 | ||
be9ae4ce SO |
2009 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
2010 | struct nfc_target *target, struct sk_buff *skb, | |
2011 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
2012 | { |
2013 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
2014 | struct pn533_frame *out_frame, *in_frame; | |
2015 | struct pn533_data_exchange_arg *arg; | |
2016 | struct sk_buff *skb_resp; | |
2017 | int skb_resp_len; | |
2018 | int rc; | |
2019 | ||
2020 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2021 | ||
2022 | if (!dev->tgt_active_prot) { | |
2023 | nfc_dev_err(&dev->interface->dev, "Cannot exchange data if" | |
2024 | " there is no active target"); | |
2025 | rc = -EINVAL; | |
2026 | goto error; | |
2027 | } | |
2028 | ||
dadb06f2 | 2029 | rc = pn533_build_tx_frame(dev, skb, true); |
c46ee386 AAJ |
2030 | if (rc) |
2031 | goto error; | |
2032 | ||
b1bb290a WR |
2033 | skb_resp_len = PN533_FRAME_HEADER_LEN + |
2034 | PN533_CMD_DATAEXCH_HEAD_LEN + | |
2035 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
2036 | PN533_FRAME_TAIL_LEN; | |
c46ee386 | 2037 | |
7c7cd3bf | 2038 | skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL); |
c46ee386 AAJ |
2039 | if (!skb_resp) { |
2040 | rc = -ENOMEM; | |
2041 | goto error; | |
2042 | } | |
2043 | ||
2044 | in_frame = (struct pn533_frame *) skb_resp->data; | |
2045 | out_frame = (struct pn533_frame *) skb->data; | |
2046 | ||
2047 | arg = kmalloc(sizeof(struct pn533_data_exchange_arg), GFP_KERNEL); | |
2048 | if (!arg) { | |
2049 | rc = -ENOMEM; | |
2050 | goto free_skb_resp; | |
2051 | } | |
2052 | ||
2053 | arg->skb_resp = skb_resp; | |
2054 | arg->skb_out = skb; | |
2055 | arg->cb = cb; | |
2056 | arg->cb_context = cb_context; | |
2057 | ||
2058 | rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, skb_resp_len, | |
2059 | pn533_data_exchange_complete, arg, | |
2060 | GFP_KERNEL); | |
2061 | if (rc) { | |
2062 | nfc_dev_err(&dev->interface->dev, "Error %d when trying to" | |
2063 | " perform data_exchange", rc); | |
2064 | goto free_arg; | |
2065 | } | |
2066 | ||
2067 | return 0; | |
2068 | ||
2069 | free_arg: | |
2070 | kfree(arg); | |
2071 | free_skb_resp: | |
2072 | kfree_skb(skb_resp); | |
2073 | error: | |
2074 | kfree_skb(skb); | |
2075 | return rc; | |
2076 | } | |
2077 | ||
dadb06f2 SO |
2078 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
2079 | u8 *params, int params_len) | |
2080 | { | |
5b412fd1 TE |
2081 | struct sk_buff *skb_out = arg; |
2082 | ||
dadb06f2 SO |
2083 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2084 | ||
5b412fd1 TE |
2085 | dev_kfree_skb(skb_out); |
2086 | ||
dadb06f2 SO |
2087 | if (params_len < 0) { |
2088 | nfc_dev_err(&dev->interface->dev, | |
2089 | "Error %d when sending data", | |
2090 | params_len); | |
2091 | ||
2092 | return params_len; | |
2093 | } | |
2094 | ||
2095 | if (params_len > 0 && params[0] != 0) { | |
2096 | nfc_tm_deactivated(dev->nfc_dev); | |
2097 | ||
51ad304c SO |
2098 | dev->tgt_mode = 0; |
2099 | ||
dadb06f2 SO |
2100 | return 0; |
2101 | } | |
2102 | ||
2103 | queue_work(dev->wq, &dev->tg_work); | |
2104 | ||
2105 | return 0; | |
2106 | } | |
2107 | ||
2108 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2109 | { | |
2110 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
2111 | struct pn533_frame *out_frame; | |
2112 | int rc; | |
2113 | ||
2114 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2115 | ||
2116 | rc = pn533_build_tx_frame(dev, skb, false); | |
2117 | if (rc) | |
2118 | goto error; | |
2119 | ||
2120 | out_frame = (struct pn533_frame *) skb->data; | |
2121 | ||
2122 | rc = pn533_send_cmd_frame_async(dev, out_frame, dev->in_frame, | |
8d25ca79 WR |
2123 | PN533_NORMAL_FRAME_MAX_LEN, |
2124 | pn533_tm_send_complete, skb, | |
2125 | 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 */ | |
b1bb290a WR |
2153 | skb_cmd = alloc_skb(PN533_FRAME_HEADER_LEN + |
2154 | PN533_CMD_DATAEXCH_HEAD_LEN + | |
2155 | PN533_FRAME_TAIL_LEN, | |
6ff73fd2 SO |
2156 | GFP_KERNEL); |
2157 | if (skb_cmd == NULL) | |
2158 | goto error_cmd; | |
2159 | ||
b1bb290a WR |
2160 | skb_reserve(skb_cmd, |
2161 | PN533_FRAME_HEADER_LEN + PN533_CMD_DATAEXCH_HEAD_LEN); | |
6ff73fd2 | 2162 | |
dadb06f2 | 2163 | rc = pn533_build_tx_frame(dev, skb_cmd, true); |
6ff73fd2 SO |
2164 | if (rc) |
2165 | goto error_frame; | |
2166 | ||
b1bb290a WR |
2167 | skb_resp_len = PN533_FRAME_HEADER_LEN + |
2168 | PN533_CMD_DATAEXCH_HEAD_LEN + | |
2169 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
2170 | PN533_FRAME_TAIL_LEN; | |
2171 | ||
6ff73fd2 SO |
2172 | skb_resp = alloc_skb(skb_resp_len, GFP_KERNEL); |
2173 | if (!skb_resp) { | |
2174 | rc = -ENOMEM; | |
2175 | goto error_frame; | |
2176 | } | |
2177 | ||
2178 | in_frame = (struct pn533_frame *) skb_resp->data; | |
2179 | out_frame = (struct pn533_frame *) skb_cmd->data; | |
2180 | ||
2181 | arg->skb_resp = skb_resp; | |
2182 | arg->skb_out = skb_cmd; | |
2183 | ||
2184 | rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame, | |
2185 | skb_resp_len, | |
2186 | pn533_data_exchange_complete, | |
2187 | dev->cmd_complete_arg, GFP_KERNEL); | |
2188 | if (!rc) | |
2189 | return; | |
2190 | ||
2191 | nfc_dev_err(&dev->interface->dev, "Error %d when trying to" | |
2192 | " perform data_exchange", rc); | |
2193 | ||
2194 | kfree_skb(skb_resp); | |
2195 | ||
2196 | error_frame: | |
2197 | kfree_skb(skb_cmd); | |
2198 | ||
2199 | error_cmd: | |
2200 | pn533_send_ack(dev, GFP_KERNEL); | |
2201 | ||
2202 | kfree(arg); | |
2203 | ||
5d50b364 | 2204 | queue_work(dev->wq, &dev->cmd_work); |
6ff73fd2 SO |
2205 | } |
2206 | ||
c46ee386 AAJ |
2207 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2208 | u8 cfgdata_len) | |
2209 | { | |
2210 | int rc; | |
2211 | u8 *params; | |
2212 | ||
2213 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2214 | ||
2215 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_RF_CONFIGURATION); | |
2216 | ||
2217 | params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame); | |
2218 | params[0] = cfgitem; | |
2219 | memcpy(¶ms[1], cfgdata, cfgdata_len); | |
2220 | dev->out_frame->datalen += (1 + cfgdata_len); | |
2221 | ||
2222 | pn533_tx_frame_finish(dev->out_frame); | |
2223 | ||
2224 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
8d25ca79 | 2225 | PN533_NORMAL_FRAME_MAX_LEN); |
c46ee386 AAJ |
2226 | |
2227 | return rc; | |
2228 | } | |
2229 | ||
5c7b0531 SO |
2230 | static int pn533_fw_reset(struct pn533 *dev) |
2231 | { | |
2232 | int rc; | |
2233 | u8 *params; | |
2234 | ||
2235 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2236 | ||
2237 | pn533_tx_frame_init(dev->out_frame, 0x18); | |
2238 | ||
2239 | params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame); | |
2240 | params[0] = 0x1; | |
2241 | dev->out_frame->datalen += 1; | |
2242 | ||
2243 | pn533_tx_frame_finish(dev->out_frame); | |
2244 | ||
2245 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
8d25ca79 | 2246 | PN533_NORMAL_FRAME_MAX_LEN); |
5c7b0531 SO |
2247 | |
2248 | return rc; | |
2249 | } | |
2250 | ||
2251 | static struct nfc_ops pn533_nfc_ops = { | |
8b3fe7b5 IE |
2252 | .dev_up = NULL, |
2253 | .dev_down = NULL, | |
361f3cb7 SO |
2254 | .dep_link_up = pn533_dep_link_up, |
2255 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2256 | .start_poll = pn533_start_poll, |
2257 | .stop_poll = pn533_stop_poll, | |
2258 | .activate_target = pn533_activate_target, | |
2259 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2260 | .im_transceive = pn533_transceive, |
dadb06f2 | 2261 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2262 | }; |
2263 | ||
5c7b0531 SO |
2264 | static int pn533_setup(struct pn533 *dev) |
2265 | { | |
2266 | struct pn533_config_max_retries max_retries; | |
2267 | struct pn533_config_timing timing; | |
2268 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2269 | int rc; | |
2270 | ||
2271 | switch (dev->device_type) { | |
2272 | case PN533_DEVICE_STD: | |
2273 | max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS; | |
2274 | max_retries.mx_rty_psl = 2; | |
2275 | max_retries.mx_rty_passive_act = | |
2276 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2277 | ||
2278 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2279 | timing.atr_res_timeout = PN533_CONFIG_TIMING_204; | |
2280 | timing.dep_timeout = PN533_CONFIG_TIMING_409; | |
2281 | ||
2282 | break; | |
2283 | ||
2284 | case PN533_DEVICE_PASORI: | |
2285 | max_retries.mx_rty_atr = 0x2; | |
2286 | max_retries.mx_rty_psl = 0x1; | |
2287 | max_retries.mx_rty_passive_act = | |
2288 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2289 | ||
2290 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2291 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2292 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2293 | ||
2294 | break; | |
2295 | ||
2296 | default: | |
2297 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2298 | dev->device_type); | |
2299 | return -EINVAL; | |
2300 | } | |
2301 | ||
2302 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2303 | (u8 *)&max_retries, sizeof(max_retries)); | |
2304 | if (rc) { | |
2305 | nfc_dev_err(&dev->interface->dev, | |
2306 | "Error on setting MAX_RETRIES config"); | |
2307 | return rc; | |
2308 | } | |
2309 | ||
2310 | ||
2311 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2312 | (u8 *)&timing, sizeof(timing)); | |
2313 | if (rc) { | |
2314 | nfc_dev_err(&dev->interface->dev, | |
2315 | "Error on setting RF timings"); | |
2316 | return rc; | |
2317 | } | |
2318 | ||
2319 | switch (dev->device_type) { | |
2320 | case PN533_DEVICE_STD: | |
2321 | break; | |
2322 | ||
2323 | case PN533_DEVICE_PASORI: | |
2324 | pn533_fw_reset(dev); | |
2325 | ||
2326 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2327 | pasori_cfg, 3); | |
2328 | if (rc) { | |
2329 | nfc_dev_err(&dev->interface->dev, | |
2330 | "Error while settings PASORI config"); | |
2331 | return rc; | |
2332 | } | |
2333 | ||
2334 | pn533_fw_reset(dev); | |
2335 | ||
2336 | break; | |
2337 | } | |
2338 | ||
2339 | return 0; | |
2340 | } | |
2341 | ||
c46ee386 AAJ |
2342 | static int pn533_probe(struct usb_interface *interface, |
2343 | const struct usb_device_id *id) | |
2344 | { | |
2345 | struct pn533_fw_version *fw_ver; | |
2346 | struct pn533 *dev; | |
2347 | struct usb_host_interface *iface_desc; | |
2348 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2349 | int in_endpoint = 0; |
2350 | int out_endpoint = 0; | |
2351 | int rc = -ENOMEM; | |
2352 | int i; | |
2353 | u32 protocols; | |
2354 | ||
2355 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2356 | if (!dev) | |
2357 | return -ENOMEM; | |
2358 | ||
2359 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2360 | dev->interface = interface; | |
0201ed03 | 2361 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2362 | |
2363 | iface_desc = interface->cur_altsetting; | |
2364 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2365 | endpoint = &iface_desc->endpoint[i].desc; | |
2366 | ||
8d25ca79 | 2367 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) |
c46ee386 | 2368 | in_endpoint = endpoint->bEndpointAddress; |
c46ee386 | 2369 | |
8d25ca79 | 2370 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) |
c46ee386 | 2371 | out_endpoint = endpoint->bEndpointAddress; |
c46ee386 AAJ |
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, | |
8d25ca79 | 2421 | PN533_NORMAL_FRAME_MAX_LEN); |
c46ee386 | 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 | 2447 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
b1bb290a | 2448 | PN533_FRAME_HEADER_LEN + |
e8753043 | 2449 | PN533_CMD_DATAEXCH_HEAD_LEN, |
b1bb290a | 2450 | PN533_FRAME_TAIL_LEN); |
c46ee386 | 2451 | if (!dev->nfc_dev) |
4849f85e | 2452 | goto destroy_wq; |
c46ee386 AAJ |
2453 | |
2454 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2455 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2456 | ||
2457 | rc = nfc_register_device(dev->nfc_dev); | |
2458 | if (rc) | |
2459 | goto free_nfc_dev; | |
2460 | ||
5c7b0531 SO |
2461 | rc = pn533_setup(dev); |
2462 | if (rc) | |
34a85bfc | 2463 | goto unregister_nfc_dev; |
34a85bfc | 2464 | |
c46ee386 AAJ |
2465 | return 0; |
2466 | ||
9f2f8ba1 SO |
2467 | unregister_nfc_dev: |
2468 | nfc_unregister_device(dev->nfc_dev); | |
2469 | ||
c46ee386 AAJ |
2470 | free_nfc_dev: |
2471 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2472 | |
4849f85e SO |
2473 | destroy_wq: |
2474 | destroy_workqueue(dev->wq); | |
c46ee386 AAJ |
2475 | error: |
2476 | kfree(dev->in_frame); | |
2477 | usb_free_urb(dev->in_urb); | |
2478 | kfree(dev->out_frame); | |
2479 | usb_free_urb(dev->out_urb); | |
2480 | kfree(dev); | |
2481 | return rc; | |
2482 | } | |
2483 | ||
2484 | static void pn533_disconnect(struct usb_interface *interface) | |
2485 | { | |
2486 | struct pn533 *dev; | |
5d50b364 | 2487 | struct pn533_cmd *cmd, *n; |
c46ee386 AAJ |
2488 | |
2489 | dev = usb_get_intfdata(interface); | |
2490 | usb_set_intfdata(interface, NULL); | |
2491 | ||
2492 | nfc_unregister_device(dev->nfc_dev); | |
2493 | nfc_free_device(dev->nfc_dev); | |
2494 | ||
2495 | usb_kill_urb(dev->in_urb); | |
2496 | usb_kill_urb(dev->out_urb); | |
2497 | ||
4849f85e | 2498 | destroy_workqueue(dev->wq); |
c46ee386 | 2499 | |
6ff73fd2 SO |
2500 | skb_queue_purge(&dev->resp_q); |
2501 | ||
6fbbdc16 SO |
2502 | del_timer(&dev->listen_timer); |
2503 | ||
5d50b364 SO |
2504 | list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { |
2505 | list_del(&cmd->queue); | |
2506 | kfree(cmd); | |
2507 | } | |
2508 | ||
c46ee386 AAJ |
2509 | kfree(dev->in_frame); |
2510 | usb_free_urb(dev->in_urb); | |
2511 | kfree(dev->out_frame); | |
2512 | usb_free_urb(dev->out_urb); | |
2513 | kfree(dev); | |
2514 | ||
276556db | 2515 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2516 | } |
2517 | ||
2518 | static struct usb_driver pn533_driver = { | |
2519 | .name = "pn533", | |
2520 | .probe = pn533_probe, | |
2521 | .disconnect = pn533_disconnect, | |
2522 | .id_table = pn533_table, | |
2523 | }; | |
2524 | ||
fe748483 | 2525 | module_usb_driver(pn533_driver); |
c46ee386 AAJ |
2526 | |
2527 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>," | |
2528 | " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2529 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); | |
2530 | MODULE_VERSION(VERSION); | |
2531 | MODULE_LICENSE("GPL"); |