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c46ee386 AAJ |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
e70b96e9 | 3 | * Copyright (C) 2012-2013 Tieto Poland |
c46ee386 AAJ |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the | |
17 | * Free Software Foundation, Inc., | |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | #include <linux/device.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/usb.h> | |
26 | #include <linux/nfc.h> | |
27 | #include <linux/netdevice.h> | |
55eb94f9 | 28 | #include <net/nfc/nfc.h> |
c46ee386 AAJ |
29 | |
30 | #define VERSION "0.1" | |
31 | ||
32 | #define PN533_VENDOR_ID 0x4CC | |
33 | #define PN533_PRODUCT_ID 0x2533 | |
34 | ||
35 | #define SCM_VENDOR_ID 0x4E6 | |
36 | #define SCL3711_PRODUCT_ID 0x5591 | |
37 | ||
5c7b0531 SO |
38 | #define SONY_VENDOR_ID 0x054c |
39 | #define PASORI_PRODUCT_ID 0x02e1 | |
40 | ||
5c7b0531 SO |
41 | #define PN533_DEVICE_STD 0x1 |
42 | #define PN533_DEVICE_PASORI 0x2 | |
43 | ||
01d719a2 SO |
44 | #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\ |
45 | NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\ | |
46 | NFC_PROTO_NFC_DEP_MASK |\ | |
47 | NFC_PROTO_ISO14443_B_MASK) | |
5c7b0531 SO |
48 | |
49 | #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ | |
50 | NFC_PROTO_MIFARE_MASK | \ | |
51 | NFC_PROTO_FELICA_MASK | \ | |
01d719a2 | 52 | NFC_PROTO_ISO14443_MASK | \ |
5c7b0531 SO |
53 | NFC_PROTO_NFC_DEP_MASK) |
54 | ||
c46ee386 | 55 | static const struct usb_device_id pn533_table[] = { |
5c7b0531 SO |
56 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
57 | .idVendor = PN533_VENDOR_ID, | |
58 | .idProduct = PN533_PRODUCT_ID, | |
59 | .driver_info = PN533_DEVICE_STD, | |
60 | }, | |
61 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
62 | .idVendor = SCM_VENDOR_ID, | |
63 | .idProduct = SCL3711_PRODUCT_ID, | |
64 | .driver_info = PN533_DEVICE_STD, | |
65 | }, | |
66 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
67 | .idVendor = SONY_VENDOR_ID, | |
68 | .idProduct = PASORI_PRODUCT_ID, | |
69 | .driver_info = PN533_DEVICE_PASORI, | |
70 | }, | |
c46ee386 AAJ |
71 | { } |
72 | }; | |
73 | MODULE_DEVICE_TABLE(usb, pn533_table); | |
74 | ||
6fbbdc16 SO |
75 | /* How much time we spend listening for initiators */ |
76 | #define PN533_LISTEN_TIME 2 | |
77 | ||
63123108 WR |
78 | /* Standard pn533 frame definitions */ |
79 | #define PN533_STD_FRAME_HEADER_LEN (sizeof(struct pn533_std_frame) \ | |
b1bb290a | 80 | + 2) /* data[0] TFI, data[1] CC */ |
63123108 | 81 | #define PN533_STD_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ |
82dec34d | 82 | |
15461aeb WR |
83 | /* |
84 | * Max extended frame payload len, excluding TFI and CC | |
85 | * which are already in PN533_FRAME_HEADER_LEN. | |
86 | */ | |
63123108 | 87 | #define PN533_STD_FRAME_MAX_PAYLOAD_LEN 263 |
15461aeb | 88 | |
63123108 | 89 | #define PN533_STD_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2), |
5b5a4437 | 90 | Postamble (1) */ |
63123108 WR |
91 | #define PN533_STD_FRAME_CHECKSUM(f) (f->data[f->datalen]) |
92 | #define PN533_STD_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1]) | |
c46ee386 AAJ |
93 | |
94 | /* start of frame */ | |
63123108 | 95 | #define PN533_STD_FRAME_SOF 0x00FF |
c46ee386 | 96 | |
63123108 WR |
97 | /* standard frame identifier: in/out/error */ |
98 | #define PN533_STD_FRAME_IDENTIFIER(f) (f->data[0]) /* TFI */ | |
99 | #define PN533_STD_FRAME_DIR_OUT 0xD4 | |
100 | #define PN533_STD_FRAME_DIR_IN 0xD5 | |
c46ee386 AAJ |
101 | |
102 | /* PN533 Commands */ | |
63123108 | 103 | #define PN533_STD_FRAME_CMD(f) (f->data[1]) |
c46ee386 AAJ |
104 | |
105 | #define PN533_CMD_GET_FIRMWARE_VERSION 0x02 | |
106 | #define PN533_CMD_RF_CONFIGURATION 0x32 | |
107 | #define PN533_CMD_IN_DATA_EXCHANGE 0x40 | |
5c7b0531 | 108 | #define PN533_CMD_IN_COMM_THRU 0x42 |
c46ee386 AAJ |
109 | #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A |
110 | #define PN533_CMD_IN_ATR 0x50 | |
111 | #define PN533_CMD_IN_RELEASE 0x52 | |
361f3cb7 | 112 | #define PN533_CMD_IN_JUMP_FOR_DEP 0x56 |
c46ee386 | 113 | |
ad3823ce | 114 | #define PN533_CMD_TG_INIT_AS_TARGET 0x8c |
103b34cf | 115 | #define PN533_CMD_TG_GET_DATA 0x86 |
dadb06f2 | 116 | #define PN533_CMD_TG_SET_DATA 0x8e |
aada17ac | 117 | #define PN533_CMD_UNDEF 0xff |
ad3823ce | 118 | |
c46ee386 AAJ |
119 | #define PN533_CMD_RESPONSE(cmd) (cmd + 1) |
120 | ||
121 | /* PN533 Return codes */ | |
122 | #define PN533_CMD_RET_MASK 0x3F | |
123 | #define PN533_CMD_MI_MASK 0x40 | |
124 | #define PN533_CMD_RET_SUCCESS 0x00 | |
125 | ||
126 | struct pn533; | |
127 | ||
0c33d262 | 128 | typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, int status); |
c46ee386 | 129 | |
aada17ac WR |
130 | typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg, |
131 | struct sk_buff *resp); | |
132 | ||
c46ee386 AAJ |
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 | ||
ef3d56e1 | 219 | static const struct pn533_poll_modulations poll_mod[] = { |
c46ee386 AAJ |
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 | ||
c46ee386 AAJ |
279 | struct pn533_cmd_activate_response { |
280 | u8 status; | |
281 | u8 nfcid3t[10]; | |
282 | u8 didt; | |
283 | u8 bst; | |
284 | u8 brt; | |
285 | u8 to; | |
286 | u8 ppt; | |
287 | /* optional */ | |
288 | u8 gt[]; | |
289 | } __packed; | |
290 | ||
361f3cb7 SO |
291 | struct pn533_cmd_jump_dep_response { |
292 | u8 status; | |
293 | u8 tg; | |
294 | u8 nfcid3t[10]; | |
295 | u8 didt; | |
296 | u8 bst; | |
297 | u8 brt; | |
298 | u8 to; | |
299 | u8 ppt; | |
300 | /* optional */ | |
301 | u8 gt[]; | |
302 | } __packed; | |
c46ee386 | 303 | |
ad3823ce SO |
304 | |
305 | /* PN533_TG_INIT_AS_TARGET */ | |
306 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
307 | #define PN533_INIT_TARGET_DEP 0x2 | |
308 | ||
fc40a8c1 SO |
309 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
310 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
311 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
312 | ||
c46ee386 AAJ |
313 | struct pn533 { |
314 | struct usb_device *udev; | |
315 | struct usb_interface *interface; | |
316 | struct nfc_dev *nfc_dev; | |
317 | ||
318 | struct urb *out_urb; | |
c46ee386 | 319 | struct urb *in_urb; |
c46ee386 | 320 | |
6ff73fd2 SO |
321 | struct sk_buff_head resp_q; |
322 | ||
4849f85e SO |
323 | struct workqueue_struct *wq; |
324 | struct work_struct cmd_work; | |
5d50b364 | 325 | struct work_struct cmd_complete_work; |
6fbbdc16 | 326 | struct work_struct poll_work; |
6ff73fd2 | 327 | struct work_struct mi_work; |
103b34cf | 328 | struct work_struct tg_work; |
6fbbdc16 | 329 | struct timer_list listen_timer; |
4849f85e | 330 | int wq_in_error; |
6fbbdc16 | 331 | int cancel_listen; |
c46ee386 AAJ |
332 | |
333 | pn533_cmd_complete_t cmd_complete; | |
334 | void *cmd_complete_arg; | |
b1e666f5 | 335 | void *cmd_complete_mi_arg; |
0201ed03 | 336 | struct mutex cmd_lock; |
2c206fb7 | 337 | struct pn533_cmd *cmd; |
c46ee386 AAJ |
338 | |
339 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
340 | u8 poll_mod_count; | |
341 | u8 poll_mod_curr; | |
342 | u32 poll_protocols; | |
6fbbdc16 SO |
343 | u32 listen_protocols; |
344 | ||
345 | u8 *gb; | |
346 | size_t gb_len; | |
c46ee386 AAJ |
347 | |
348 | u8 tgt_available_prots; | |
349 | u8 tgt_active_prot; | |
51ad304c | 350 | u8 tgt_mode; |
5c7b0531 SO |
351 | |
352 | u32 device_type; | |
5d50b364 SO |
353 | |
354 | struct list_head cmd_queue; | |
355 | u8 cmd_pending; | |
9e2d493e WR |
356 | |
357 | struct pn533_frame_ops *ops; | |
5d50b364 SO |
358 | }; |
359 | ||
360 | struct pn533_cmd { | |
361 | struct list_head queue; | |
4b2a9532 | 362 | u8 code; |
aada17ac WR |
363 | struct sk_buff *req; |
364 | struct sk_buff *resp; | |
9e2d493e | 365 | int resp_len; |
4231604b WR |
366 | pn533_send_async_complete_t complete_cb; |
367 | void *complete_cb_context; | |
c46ee386 AAJ |
368 | }; |
369 | ||
63123108 | 370 | struct pn533_std_frame { |
c46ee386 AAJ |
371 | u8 preamble; |
372 | __be16 start_frame; | |
373 | u8 datalen; | |
374 | u8 datalen_checksum; | |
375 | u8 data[]; | |
376 | } __packed; | |
377 | ||
9e2d493e WR |
378 | struct pn533_frame_ops { |
379 | void (*tx_frame_init)(void *frame, u8 cmd_code); | |
380 | void (*tx_frame_finish)(void *frame); | |
381 | void (*tx_update_payload_len)(void *frame, int len); | |
382 | int tx_header_len; | |
383 | int tx_tail_len; | |
384 | ||
385 | bool (*rx_is_frame_valid)(void *frame); | |
386 | int (*rx_frame_size)(void *frame); | |
387 | int rx_header_len; | |
388 | int rx_tail_len; | |
389 | ||
390 | int max_payload_len; | |
391 | u8 (*get_cmd_code)(void *frame); | |
392 | }; | |
393 | ||
c46ee386 | 394 | /* The rule: value + checksum = 0 */ |
63123108 | 395 | static inline u8 pn533_std_checksum(u8 value) |
c46ee386 AAJ |
396 | { |
397 | return ~value + 1; | |
398 | } | |
399 | ||
400 | /* The rule: sum(data elements) + checksum = 0 */ | |
63123108 | 401 | static u8 pn533_std_data_checksum(u8 *data, int datalen) |
c46ee386 AAJ |
402 | { |
403 | u8 sum = 0; | |
404 | int i; | |
405 | ||
406 | for (i = 0; i < datalen; i++) | |
407 | sum += data[i]; | |
408 | ||
63123108 | 409 | return pn533_std_checksum(sum); |
c46ee386 AAJ |
410 | } |
411 | ||
63123108 | 412 | static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code) |
c46ee386 | 413 | { |
63123108 | 414 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 415 | |
c46ee386 | 416 | frame->preamble = 0; |
63123108 WR |
417 | frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF); |
418 | PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT; | |
419 | PN533_STD_FRAME_CMD(frame) = cmd_code; | |
c46ee386 AAJ |
420 | frame->datalen = 2; |
421 | } | |
422 | ||
63123108 | 423 | static void pn533_std_tx_frame_finish(void *_frame) |
c46ee386 | 424 | { |
63123108 | 425 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 426 | |
63123108 | 427 | frame->datalen_checksum = pn533_std_checksum(frame->datalen); |
c46ee386 | 428 | |
63123108 WR |
429 | PN533_STD_FRAME_CHECKSUM(frame) = |
430 | pn533_std_data_checksum(frame->data, frame->datalen); | |
c46ee386 | 431 | |
63123108 | 432 | PN533_STD_FRAME_POSTAMBLE(frame) = 0; |
c46ee386 AAJ |
433 | } |
434 | ||
63123108 | 435 | static void pn533_std_tx_update_payload_len(void *_frame, int len) |
9e2d493e | 436 | { |
63123108 | 437 | struct pn533_std_frame *frame = _frame; |
9e2d493e WR |
438 | |
439 | frame->datalen += len; | |
440 | } | |
441 | ||
63123108 | 442 | static bool pn533_std_rx_frame_is_valid(void *_frame) |
c46ee386 AAJ |
443 | { |
444 | u8 checksum; | |
63123108 | 445 | struct pn533_std_frame *frame = _frame; |
c46ee386 | 446 | |
63123108 | 447 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
448 | return false; |
449 | ||
63123108 | 450 | checksum = pn533_std_checksum(frame->datalen); |
c46ee386 AAJ |
451 | if (checksum != frame->datalen_checksum) |
452 | return false; | |
453 | ||
63123108 WR |
454 | checksum = pn533_std_data_checksum(frame->data, frame->datalen); |
455 | if (checksum != PN533_STD_FRAME_CHECKSUM(frame)) | |
c46ee386 AAJ |
456 | return false; |
457 | ||
458 | return true; | |
459 | } | |
460 | ||
63123108 | 461 | static bool pn533_std_rx_frame_is_ack(struct pn533_std_frame *frame) |
c46ee386 | 462 | { |
63123108 | 463 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
464 | return false; |
465 | ||
466 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
467 | return false; | |
468 | ||
469 | return true; | |
470 | } | |
471 | ||
63123108 | 472 | static inline int pn533_std_rx_frame_size(void *frame) |
9e2d493e | 473 | { |
63123108 | 474 | struct pn533_std_frame *f = frame; |
9e2d493e | 475 | |
63123108 WR |
476 | return sizeof(struct pn533_std_frame) + f->datalen + |
477 | PN533_STD_FRAME_TAIL_LEN; | |
9e2d493e WR |
478 | } |
479 | ||
63123108 | 480 | static u8 pn533_std_get_cmd_code(void *frame) |
9e2d493e | 481 | { |
63123108 | 482 | struct pn533_std_frame *f = frame; |
9e2d493e | 483 | |
63123108 | 484 | return PN533_STD_FRAME_CMD(f); |
9e2d493e WR |
485 | } |
486 | ||
ef3d56e1 | 487 | static struct pn533_frame_ops pn533_std_frame_ops = { |
63123108 WR |
488 | .tx_frame_init = pn533_std_tx_frame_init, |
489 | .tx_frame_finish = pn533_std_tx_frame_finish, | |
490 | .tx_update_payload_len = pn533_std_tx_update_payload_len, | |
491 | .tx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
492 | .tx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
493 | ||
494 | .rx_is_frame_valid = pn533_std_rx_frame_is_valid, | |
495 | .rx_frame_size = pn533_std_rx_frame_size, | |
496 | .rx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
497 | .rx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
498 | ||
499 | .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN, | |
500 | .get_cmd_code = pn533_std_get_cmd_code, | |
9e2d493e WR |
501 | }; |
502 | ||
503 | static bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame) | |
c46ee386 | 504 | { |
2c206fb7 | 505 | return (dev->ops->get_cmd_code(frame) == |
4b2a9532 | 506 | PN533_CMD_RESPONSE(dev->cmd->code)); |
c46ee386 AAJ |
507 | } |
508 | ||
4849f85e SO |
509 | |
510 | static void pn533_wq_cmd_complete(struct work_struct *work) | |
c46ee386 | 511 | { |
5d50b364 | 512 | struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); |
c46ee386 AAJ |
513 | int rc; |
514 | ||
0c33d262 | 515 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, dev->wq_in_error); |
c46ee386 | 516 | if (rc != -EINPROGRESS) |
5d50b364 | 517 | queue_work(dev->wq, &dev->cmd_work); |
c46ee386 AAJ |
518 | } |
519 | ||
520 | static void pn533_recv_response(struct urb *urb) | |
521 | { | |
522 | struct pn533 *dev = urb->context; | |
9e2d493e | 523 | u8 *in_frame; |
c46ee386 | 524 | |
c46ee386 AAJ |
525 | switch (urb->status) { |
526 | case 0: | |
f8f99171 | 527 | break; /* success */ |
c46ee386 AAJ |
528 | case -ECONNRESET: |
529 | case -ENOENT: | |
6ca55372 | 530 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
531 | "The urb has been canceled (status %d)", |
532 | urb->status); | |
4849f85e SO |
533 | dev->wq_in_error = urb->status; |
534 | goto sched_wq; | |
f8f99171 | 535 | case -ESHUTDOWN: |
c46ee386 | 536 | default: |
6ca55372 | 537 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 538 | "Urb failure (status %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 | ||
fcfafc76 | 545 | nfc_dev_dbg(&dev->interface->dev, "Received a frame."); |
e279f84f SO |
546 | print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, |
547 | dev->ops->rx_frame_size(in_frame), false); | |
99e591be | 548 | |
9e2d493e | 549 | if (!dev->ops->rx_is_frame_valid(in_frame)) { |
c46ee386 | 550 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); |
4849f85e SO |
551 | dev->wq_in_error = -EIO; |
552 | goto sched_wq; | |
c46ee386 AAJ |
553 | } |
554 | ||
9e2d493e | 555 | if (!pn533_rx_frame_is_cmd_response(dev, in_frame)) { |
6ca55372 WR |
556 | nfc_dev_err(&dev->interface->dev, |
557 | "It it not the response to the last command"); | |
4849f85e SO |
558 | dev->wq_in_error = -EIO; |
559 | goto sched_wq; | |
c46ee386 AAJ |
560 | } |
561 | ||
4849f85e | 562 | dev->wq_in_error = 0; |
c46ee386 | 563 | |
4849f85e | 564 | sched_wq: |
5d50b364 | 565 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
566 | } |
567 | ||
568 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
569 | { | |
570 | dev->in_urb->complete = pn533_recv_response; | |
571 | ||
572 | return usb_submit_urb(dev->in_urb, flags); | |
573 | } | |
574 | ||
575 | static void pn533_recv_ack(struct urb *urb) | |
576 | { | |
577 | struct pn533 *dev = urb->context; | |
63123108 | 578 | struct pn533_std_frame *in_frame; |
c46ee386 AAJ |
579 | int rc; |
580 | ||
581 | switch (urb->status) { | |
582 | case 0: | |
f8f99171 | 583 | break; /* success */ |
c46ee386 AAJ |
584 | case -ECONNRESET: |
585 | case -ENOENT: | |
6ca55372 | 586 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
587 | "The urb has been stopped (status %d)", |
588 | urb->status); | |
4849f85e SO |
589 | dev->wq_in_error = urb->status; |
590 | goto sched_wq; | |
f8f99171 | 591 | case -ESHUTDOWN: |
c46ee386 | 592 | default: |
6ca55372 | 593 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 594 | "Urb failure (status %d)", urb->status); |
4849f85e SO |
595 | dev->wq_in_error = urb->status; |
596 | goto sched_wq; | |
c46ee386 AAJ |
597 | } |
598 | ||
599 | in_frame = dev->in_urb->transfer_buffer; | |
600 | ||
63123108 | 601 | if (!pn533_std_rx_frame_is_ack(in_frame)) { |
c46ee386 | 602 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); |
4849f85e SO |
603 | dev->wq_in_error = -EIO; |
604 | goto sched_wq; | |
c46ee386 AAJ |
605 | } |
606 | ||
c46ee386 AAJ |
607 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); |
608 | if (rc) { | |
6ca55372 WR |
609 | nfc_dev_err(&dev->interface->dev, |
610 | "usb_submit_urb failed with result %d", rc); | |
4849f85e SO |
611 | dev->wq_in_error = rc; |
612 | goto sched_wq; | |
c46ee386 AAJ |
613 | } |
614 | ||
615 | return; | |
616 | ||
4849f85e | 617 | sched_wq: |
5d50b364 | 618 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
619 | } |
620 | ||
621 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
622 | { | |
623 | dev->in_urb->complete = pn533_recv_ack; | |
624 | ||
625 | return usb_submit_urb(dev->in_urb, flags); | |
626 | } | |
627 | ||
628 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
629 | { | |
63123108 | 630 | u8 ack[PN533_STD_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00}; |
5b5a4437 | 631 | /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */ |
c46ee386 AAJ |
632 | int rc; |
633 | ||
634 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
635 | ||
5b5a4437 WR |
636 | dev->out_urb->transfer_buffer = ack; |
637 | dev->out_urb->transfer_buffer_length = sizeof(ack); | |
c46ee386 AAJ |
638 | rc = usb_submit_urb(dev->out_urb, flags); |
639 | ||
640 | return rc; | |
641 | } | |
642 | ||
e8f40531 WR |
643 | static int __pn533_send_frame_async(struct pn533 *dev, |
644 | struct sk_buff *out, | |
645 | struct sk_buff *in, | |
646 | int in_len, | |
c46ee386 | 647 | pn533_cmd_complete_t cmd_complete, |
d94ea4f5 | 648 | void *arg) |
c46ee386 AAJ |
649 | { |
650 | int rc; | |
651 | ||
c46ee386 AAJ |
652 | dev->cmd_complete = cmd_complete; |
653 | dev->cmd_complete_arg = arg; | |
654 | ||
e8f40531 WR |
655 | dev->out_urb->transfer_buffer = out->data; |
656 | dev->out_urb->transfer_buffer_length = out->len; | |
c46ee386 | 657 | |
e8f40531 WR |
658 | dev->in_urb->transfer_buffer = in->data; |
659 | dev->in_urb->transfer_buffer_length = in_len; | |
c46ee386 | 660 | |
e279f84f SO |
661 | print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1, |
662 | out->data, out->len, false); | |
99e591be | 663 | |
d94ea4f5 | 664 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); |
c46ee386 AAJ |
665 | if (rc) |
666 | return rc; | |
667 | ||
d94ea4f5 | 668 | rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL); |
c46ee386 AAJ |
669 | if (rc) |
670 | goto error; | |
671 | ||
672 | return 0; | |
673 | ||
674 | error: | |
675 | usb_unlink_urb(dev->out_urb); | |
676 | return rc; | |
677 | } | |
678 | ||
9e2d493e WR |
679 | static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code, |
680 | struct sk_buff *skb) | |
aada17ac | 681 | { |
aada17ac WR |
682 | /* payload is already there, just update datalen */ |
683 | int payload_len = skb->len; | |
9e2d493e | 684 | struct pn533_frame_ops *ops = dev->ops; |
aada17ac | 685 | |
aada17ac | 686 | |
9e2d493e WR |
687 | skb_push(skb, ops->tx_header_len); |
688 | skb_put(skb, ops->tx_tail_len); | |
aada17ac | 689 | |
9e2d493e WR |
690 | ops->tx_frame_init(skb->data, cmd_code); |
691 | ops->tx_update_payload_len(skb->data, payload_len); | |
692 | ops->tx_frame_finish(skb->data); | |
aada17ac WR |
693 | } |
694 | ||
4231604b | 695 | static int pn533_send_async_complete(struct pn533 *dev, void *arg, int status) |
aada17ac | 696 | { |
4231604b | 697 | struct pn533_cmd *cmd = arg; |
aada17ac | 698 | |
4231604b WR |
699 | struct sk_buff *req = cmd->req; |
700 | struct sk_buff *resp = cmd->resp; | |
aada17ac | 701 | |
aada17ac WR |
702 | int rc; |
703 | ||
704 | dev_kfree_skb(req); | |
705 | ||
0c33d262 | 706 | if (status < 0) { |
4231604b WR |
707 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, |
708 | ERR_PTR(status)); | |
aada17ac | 709 | dev_kfree_skb(resp); |
2c206fb7 | 710 | goto done; |
aada17ac WR |
711 | } |
712 | ||
9e2d493e WR |
713 | skb_put(resp, dev->ops->rx_frame_size(resp->data)); |
714 | skb_pull(resp, dev->ops->rx_header_len); | |
715 | skb_trim(resp, resp->len - dev->ops->rx_tail_len); | |
aada17ac | 716 | |
4231604b | 717 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp); |
aada17ac | 718 | |
2c206fb7 | 719 | done: |
4231604b | 720 | kfree(cmd); |
2c206fb7 | 721 | dev->cmd = NULL; |
aada17ac WR |
722 | return rc; |
723 | } | |
724 | ||
725 | static int __pn533_send_async(struct pn533 *dev, u8 cmd_code, | |
726 | struct sk_buff *req, struct sk_buff *resp, | |
727 | int resp_len, | |
728 | pn533_send_async_complete_t complete_cb, | |
729 | void *complete_cb_context) | |
730 | { | |
731 | struct pn533_cmd *cmd; | |
aada17ac WR |
732 | int rc = 0; |
733 | ||
fcfafc76 | 734 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code); |
aada17ac | 735 | |
4231604b WR |
736 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
737 | if (!cmd) | |
aada17ac WR |
738 | return -ENOMEM; |
739 | ||
4b2a9532 | 740 | cmd->code = cmd_code; |
4231604b WR |
741 | cmd->req = req; |
742 | cmd->resp = resp; | |
743 | cmd->resp_len = resp_len; | |
744 | cmd->complete_cb = complete_cb; | |
745 | cmd->complete_cb_context = complete_cb_context; | |
aada17ac | 746 | |
9e2d493e | 747 | pn533_build_cmd_frame(dev, cmd_code, req); |
aada17ac WR |
748 | |
749 | mutex_lock(&dev->cmd_lock); | |
750 | ||
751 | if (!dev->cmd_pending) { | |
e8f40531 | 752 | rc = __pn533_send_frame_async(dev, req, resp, resp_len, |
4231604b | 753 | pn533_send_async_complete, cmd); |
aada17ac WR |
754 | if (rc) |
755 | goto error; | |
756 | ||
757 | dev->cmd_pending = 1; | |
2c206fb7 | 758 | dev->cmd = cmd; |
aada17ac WR |
759 | goto unlock; |
760 | } | |
761 | ||
fcfafc76 WR |
762 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__, |
763 | cmd_code); | |
aada17ac | 764 | |
aada17ac | 765 | INIT_LIST_HEAD(&cmd->queue); |
aada17ac WR |
766 | list_add_tail(&cmd->queue, &dev->cmd_queue); |
767 | ||
768 | goto unlock; | |
769 | ||
770 | error: | |
4231604b | 771 | kfree(cmd); |
aada17ac WR |
772 | unlock: |
773 | mutex_unlock(&dev->cmd_lock); | |
774 | return rc; | |
15461aeb WR |
775 | } |
776 | ||
777 | static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code, | |
778 | struct sk_buff *req, | |
779 | pn533_send_async_complete_t complete_cb, | |
780 | void *complete_cb_context) | |
781 | { | |
782 | struct sk_buff *resp; | |
783 | int rc; | |
9e2d493e WR |
784 | int resp_len = dev->ops->rx_header_len + |
785 | dev->ops->max_payload_len + | |
786 | dev->ops->rx_tail_len; | |
15461aeb | 787 | |
15461aeb WR |
788 | resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL); |
789 | if (!resp) | |
790 | return -ENOMEM; | |
791 | ||
792 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, | |
793 | complete_cb_context); | |
794 | if (rc) | |
795 | dev_kfree_skb(resp); | |
796 | ||
797 | return rc; | |
aada17ac WR |
798 | } |
799 | ||
800 | static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code, | |
801 | struct sk_buff *req, | |
802 | pn533_send_async_complete_t complete_cb, | |
803 | void *complete_cb_context) | |
804 | { | |
805 | struct sk_buff *resp; | |
806 | int rc; | |
9e2d493e WR |
807 | int resp_len = dev->ops->rx_header_len + |
808 | dev->ops->max_payload_len + | |
809 | dev->ops->rx_tail_len; | |
aada17ac | 810 | |
9e2d493e | 811 | resp = alloc_skb(resp_len, GFP_KERNEL); |
aada17ac WR |
812 | if (!resp) |
813 | return -ENOMEM; | |
814 | ||
9e2d493e WR |
815 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, |
816 | complete_cb_context); | |
aada17ac WR |
817 | if (rc) |
818 | dev_kfree_skb(resp); | |
819 | ||
820 | return rc; | |
821 | } | |
822 | ||
b1e666f5 WR |
823 | /* |
824 | * pn533_send_cmd_direct_async | |
825 | * | |
826 | * The function sends a piority cmd directly to the chip omiting the cmd | |
827 | * queue. It's intended to be used by chaining mechanism of received responses | |
828 | * where the host has to request every single chunk of data before scheduling | |
829 | * next cmd from the queue. | |
830 | */ | |
831 | static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code, | |
832 | struct sk_buff *req, | |
833 | pn533_send_async_complete_t complete_cb, | |
834 | void *complete_cb_context) | |
835 | { | |
b1e666f5 | 836 | struct sk_buff *resp; |
4231604b | 837 | struct pn533_cmd *cmd; |
b1e666f5 | 838 | int rc; |
9e2d493e WR |
839 | int resp_len = dev->ops->rx_header_len + |
840 | dev->ops->max_payload_len + | |
841 | dev->ops->rx_tail_len; | |
b1e666f5 | 842 | |
b1e666f5 WR |
843 | resp = alloc_skb(resp_len, GFP_KERNEL); |
844 | if (!resp) | |
845 | return -ENOMEM; | |
846 | ||
4231604b WR |
847 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
848 | if (!cmd) { | |
b1e666f5 WR |
849 | dev_kfree_skb(resp); |
850 | return -ENOMEM; | |
851 | } | |
852 | ||
4b2a9532 | 853 | cmd->code = cmd_code; |
4231604b WR |
854 | cmd->req = req; |
855 | cmd->resp = resp; | |
856 | cmd->resp_len = resp_len; | |
857 | cmd->complete_cb = complete_cb; | |
858 | cmd->complete_cb_context = complete_cb_context; | |
b1e666f5 | 859 | |
9e2d493e | 860 | pn533_build_cmd_frame(dev, cmd_code, req); |
b1e666f5 | 861 | |
e8f40531 | 862 | rc = __pn533_send_frame_async(dev, req, resp, resp_len, |
4231604b | 863 | pn533_send_async_complete, cmd); |
b1e666f5 WR |
864 | if (rc < 0) { |
865 | dev_kfree_skb(resp); | |
4231604b | 866 | kfree(cmd); |
2c206fb7 WR |
867 | } else { |
868 | dev->cmd = cmd; | |
b1e666f5 WR |
869 | } |
870 | ||
871 | return rc; | |
872 | } | |
873 | ||
5d50b364 SO |
874 | static void pn533_wq_cmd(struct work_struct *work) |
875 | { | |
876 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); | |
877 | struct pn533_cmd *cmd; | |
0ce1fbdd | 878 | int rc; |
5d50b364 SO |
879 | |
880 | mutex_lock(&dev->cmd_lock); | |
881 | ||
882 | if (list_empty(&dev->cmd_queue)) { | |
883 | dev->cmd_pending = 0; | |
884 | mutex_unlock(&dev->cmd_lock); | |
885 | return; | |
886 | } | |
887 | ||
888 | cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); | |
889 | ||
60ad07ab SJ |
890 | list_del(&cmd->queue); |
891 | ||
5d50b364 SO |
892 | mutex_unlock(&dev->cmd_lock); |
893 | ||
0ce1fbdd | 894 | rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len, |
4231604b | 895 | pn533_send_async_complete, cmd); |
0ce1fbdd WR |
896 | if (rc < 0) { |
897 | dev_kfree_skb(cmd->req); | |
898 | dev_kfree_skb(cmd->resp); | |
4231604b | 899 | kfree(cmd); |
2c206fb7 | 900 | return; |
0ce1fbdd | 901 | } |
2c206fb7 WR |
902 | |
903 | dev->cmd = cmd; | |
5d50b364 SO |
904 | } |
905 | ||
c46ee386 | 906 | struct pn533_sync_cmd_response { |
94c5c156 | 907 | struct sk_buff *resp; |
c46ee386 AAJ |
908 | struct completion done; |
909 | }; | |
910 | ||
94c5c156 WR |
911 | static int pn533_send_sync_complete(struct pn533 *dev, void *_arg, |
912 | struct sk_buff *resp) | |
913 | { | |
914 | struct pn533_sync_cmd_response *arg = _arg; | |
915 | ||
94c5c156 WR |
916 | arg->resp = resp; |
917 | complete(&arg->done); | |
918 | ||
919 | return 0; | |
920 | } | |
921 | ||
922 | /* pn533_send_cmd_sync | |
923 | * | |
924 | * Please note the req parameter is freed inside the function to | |
925 | * limit a number of return value interpretations by the caller. | |
926 | * | |
927 | * 1. negative in case of error during TX path -> req should be freed | |
928 | * | |
929 | * 2. negative in case of error during RX path -> req should not be freed | |
930 | * as it's been already freed at the begining of RX path by | |
931 | * async_complete_cb. | |
932 | * | |
933 | * 3. valid pointer in case of succesfult RX path | |
934 | * | |
935 | * A caller has to check a return value with IS_ERR macro. If the test pass, | |
936 | * the returned pointer is valid. | |
937 | * | |
938 | * */ | |
939 | static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code, | |
940 | struct sk_buff *req) | |
941 | { | |
942 | int rc; | |
943 | struct pn533_sync_cmd_response arg; | |
944 | ||
94c5c156 WR |
945 | init_completion(&arg.done); |
946 | ||
947 | rc = pn533_send_cmd_async(dev, cmd_code, req, | |
948 | pn533_send_sync_complete, &arg); | |
949 | if (rc) { | |
950 | dev_kfree_skb(req); | |
951 | return ERR_PTR(rc); | |
952 | } | |
953 | ||
954 | wait_for_completion(&arg.done); | |
955 | ||
956 | return arg.resp; | |
957 | } | |
958 | ||
c46ee386 AAJ |
959 | static void pn533_send_complete(struct urb *urb) |
960 | { | |
961 | struct pn533 *dev = urb->context; | |
962 | ||
c46ee386 AAJ |
963 | switch (urb->status) { |
964 | case 0: | |
f8f99171 | 965 | break; /* success */ |
c46ee386 AAJ |
966 | case -ECONNRESET: |
967 | case -ENOENT: | |
6ca55372 | 968 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
969 | "The urb has been stopped (status %d)", |
970 | urb->status); | |
c46ee386 | 971 | break; |
f8f99171 | 972 | case -ESHUTDOWN: |
c46ee386 | 973 | default: |
f8f99171 WR |
974 | nfc_dev_err(&dev->interface->dev, |
975 | "Urb failure (status %d)", urb->status); | |
c46ee386 AAJ |
976 | } |
977 | } | |
978 | ||
9e2d493e | 979 | static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size) |
d22b2db6 WR |
980 | { |
981 | struct sk_buff *skb; | |
982 | ||
9e2d493e | 983 | skb = alloc_skb(dev->ops->tx_header_len + |
d22b2db6 | 984 | size + |
9e2d493e | 985 | dev->ops->tx_tail_len, GFP_KERNEL); |
d22b2db6 WR |
986 | |
987 | if (skb) | |
9e2d493e | 988 | skb_reserve(skb, dev->ops->tx_header_len); |
d22b2db6 WR |
989 | |
990 | return skb; | |
991 | } | |
992 | ||
c46ee386 AAJ |
993 | struct pn533_target_type_a { |
994 | __be16 sens_res; | |
995 | u8 sel_res; | |
996 | u8 nfcid_len; | |
997 | u8 nfcid_data[]; | |
998 | } __packed; | |
999 | ||
1000 | ||
1001 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
1002 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
1003 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
1004 | ||
1005 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
1006 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
1007 | ||
1008 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
1009 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
1010 | ||
1011 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
1012 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
1013 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
1014 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
1015 | ||
1016 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
1017 | int target_data_len) | |
1018 | { | |
1019 | u8 ssd; | |
1020 | u8 platconf; | |
1021 | ||
1022 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
1023 | return false; | |
1024 | ||
1025 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
1026 | the values are not being used */ | |
1027 | ||
1028 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1029 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
1030 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
1031 | ||
1032 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1033 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1034 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1035 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1036 | return false; |
1037 | ||
1038 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
1039 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
1040 | return false; | |
1041 | ||
1042 | return true; | |
1043 | } | |
1044 | ||
1045 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1046 | int tgt_data_len) | |
1047 | { | |
1048 | struct pn533_target_type_a *tgt_type_a; | |
1049 | ||
37cf4fc6 | 1050 | tgt_type_a = (struct pn533_target_type_a *)tgt_data; |
c46ee386 AAJ |
1051 | |
1052 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
1053 | return -EPROTO; | |
1054 | ||
1055 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
1056 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
1057 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
1058 | break; | |
1059 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
1060 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
1061 | break; | |
1062 | case PN533_TYPE_A_SEL_PROT_DEP: | |
1063 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
1064 | break; | |
1065 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
1066 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
1067 | NFC_PROTO_NFC_DEP_MASK; | |
1068 | break; | |
1069 | } | |
1070 | ||
1071 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
1072 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
1073 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
1074 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1075 | |
1076 | return 0; | |
1077 | } | |
1078 | ||
1079 | struct pn533_target_felica { | |
1080 | u8 pol_res; | |
1081 | u8 opcode; | |
1082 | u8 nfcid2[8]; | |
1083 | u8 pad[8]; | |
1084 | /* optional */ | |
1085 | u8 syst_code[]; | |
1086 | } __packed; | |
1087 | ||
1088 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
1089 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
1090 | ||
1091 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
1092 | int target_data_len) | |
1093 | { | |
1094 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
1095 | return false; | |
1096 | ||
1097 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
1098 | return false; | |
1099 | ||
1100 | return true; | |
1101 | } | |
1102 | ||
1103 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1104 | int tgt_data_len) | |
1105 | { | |
1106 | struct pn533_target_felica *tgt_felica; | |
1107 | ||
37cf4fc6 | 1108 | tgt_felica = (struct pn533_target_felica *)tgt_data; |
c46ee386 AAJ |
1109 | |
1110 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
1111 | return -EPROTO; | |
1112 | ||
5d467742 WR |
1113 | if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) && |
1114 | (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2)) | |
c46ee386 AAJ |
1115 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; |
1116 | else | |
1117 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
1118 | ||
7975754f SO |
1119 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
1120 | nfc_tgt->sensf_res_len = 9; | |
1121 | ||
c46ee386 AAJ |
1122 | return 0; |
1123 | } | |
1124 | ||
1125 | struct pn533_target_jewel { | |
1126 | __be16 sens_res; | |
1127 | u8 jewelid[4]; | |
1128 | } __packed; | |
1129 | ||
1130 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
1131 | int target_data_len) | |
1132 | { | |
1133 | u8 ssd; | |
1134 | u8 platconf; | |
1135 | ||
1136 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
1137 | return false; | |
1138 | ||
1139 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1140 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
1141 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
1142 | ||
1143 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1144 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1145 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1146 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1147 | return false; |
1148 | ||
1149 | return true; | |
1150 | } | |
1151 | ||
1152 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1153 | int tgt_data_len) | |
1154 | { | |
1155 | struct pn533_target_jewel *tgt_jewel; | |
1156 | ||
37cf4fc6 | 1157 | tgt_jewel = (struct pn533_target_jewel *)tgt_data; |
c46ee386 AAJ |
1158 | |
1159 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
1160 | return -EPROTO; | |
1161 | ||
1162 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
1163 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
1164 | nfc_tgt->nfcid1_len = 4; |
1165 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1166 | |
1167 | return 0; | |
1168 | } | |
1169 | ||
1170 | struct pn533_type_b_prot_info { | |
1171 | u8 bitrate; | |
1172 | u8 fsci_type; | |
1173 | u8 fwi_adc_fo; | |
1174 | } __packed; | |
1175 | ||
1176 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
1177 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
1178 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
1179 | ||
1180 | struct pn533_type_b_sens_res { | |
1181 | u8 opcode; | |
1182 | u8 nfcid[4]; | |
1183 | u8 appdata[4]; | |
1184 | struct pn533_type_b_prot_info prot_info; | |
1185 | } __packed; | |
1186 | ||
1187 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
1188 | ||
1189 | struct pn533_target_type_b { | |
1190 | struct pn533_type_b_sens_res sensb_res; | |
1191 | u8 attrib_res_len; | |
1192 | u8 attrib_res[]; | |
1193 | } __packed; | |
1194 | ||
1195 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
1196 | int target_data_len) | |
1197 | { | |
1198 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
1199 | return false; | |
1200 | ||
1201 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
1202 | return false; | |
1203 | ||
1204 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
1205 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
1206 | return false; | |
1207 | ||
1208 | return true; | |
1209 | } | |
1210 | ||
1211 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1212 | int tgt_data_len) | |
1213 | { | |
1214 | struct pn533_target_type_b *tgt_type_b; | |
1215 | ||
37cf4fc6 | 1216 | tgt_type_b = (struct pn533_target_type_b *)tgt_data; |
c46ee386 AAJ |
1217 | |
1218 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
1219 | return -EPROTO; | |
1220 | ||
01d719a2 | 1221 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
1222 | |
1223 | return 0; | |
1224 | } | |
1225 | ||
b5193e5d WR |
1226 | static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata, |
1227 | int tgdata_len) | |
c46ee386 | 1228 | { |
c46ee386 AAJ |
1229 | struct nfc_target nfc_tgt; |
1230 | int rc; | |
1231 | ||
1232 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
b5193e5d | 1233 | dev->poll_mod_curr); |
c46ee386 | 1234 | |
b5193e5d | 1235 | if (tg != 1) |
c46ee386 AAJ |
1236 | return -EPROTO; |
1237 | ||
98b3ac1b SO |
1238 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1239 | ||
c46ee386 AAJ |
1240 | switch (dev->poll_mod_curr) { |
1241 | case PN533_POLL_MOD_106KBPS_A: | |
b5193e5d | 1242 | rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1243 | break; |
1244 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1245 | case PN533_POLL_MOD_424KBPS_FELICA: | |
b5193e5d | 1246 | rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1247 | break; |
1248 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
b5193e5d | 1249 | rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1250 | break; |
1251 | case PN533_POLL_MOD_847KBPS_B: | |
b5193e5d | 1252 | rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1253 | break; |
1254 | default: | |
b5193e5d WR |
1255 | nfc_dev_err(&dev->interface->dev, |
1256 | "Unknown current poll modulation"); | |
c46ee386 AAJ |
1257 | return -EPROTO; |
1258 | } | |
1259 | ||
1260 | if (rc) | |
1261 | return rc; | |
1262 | ||
1263 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
b5193e5d WR |
1264 | nfc_dev_dbg(&dev->interface->dev, |
1265 | "The Tg found doesn't have the desired protocol"); | |
c46ee386 AAJ |
1266 | return -EAGAIN; |
1267 | } | |
1268 | ||
b5193e5d WR |
1269 | nfc_dev_dbg(&dev->interface->dev, |
1270 | "Target found - supported protocols: 0x%x", | |
1271 | nfc_tgt.supported_protocols); | |
c46ee386 AAJ |
1272 | |
1273 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1274 | ||
1275 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1276 | ||
1277 | return 0; | |
1278 | } | |
1279 | ||
6fbbdc16 SO |
1280 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1281 | { | |
1282 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1283 | } | |
1284 | ||
c46ee386 AAJ |
1285 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1286 | { | |
1287 | dev->poll_mod_count = 0; | |
1288 | } | |
1289 | ||
1290 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1291 | { | |
1292 | dev->poll_mod_active[dev->poll_mod_count] = | |
37cf4fc6 | 1293 | (struct pn533_poll_modulations *)&poll_mod[mod_index]; |
c46ee386 AAJ |
1294 | dev->poll_mod_count++; |
1295 | } | |
1296 | ||
6fbbdc16 SO |
1297 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1298 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1299 | { |
1300 | pn533_poll_reset_mod_list(dev); | |
1301 | ||
b08e8603 WR |
1302 | if ((im_protocols & NFC_PROTO_MIFARE_MASK) || |
1303 | (im_protocols & NFC_PROTO_ISO14443_MASK) || | |
1304 | (im_protocols & NFC_PROTO_NFC_DEP_MASK)) | |
c46ee386 AAJ |
1305 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1306 | ||
b08e8603 WR |
1307 | if (im_protocols & NFC_PROTO_FELICA_MASK || |
1308 | im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1309 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1310 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1311 | } | |
1312 | ||
6fbbdc16 | 1313 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1314 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1315 | ||
01d719a2 | 1316 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1317 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1318 | |
6fbbdc16 SO |
1319 | if (tm_protocols) |
1320 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1321 | } |
1322 | ||
b5193e5d | 1323 | static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp) |
c46ee386 | 1324 | { |
b5193e5d WR |
1325 | u8 nbtg, tg, *tgdata; |
1326 | int rc, tgdata_len; | |
c46ee386 AAJ |
1327 | |
1328 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1329 | ||
b5193e5d WR |
1330 | nbtg = resp->data[0]; |
1331 | tg = resp->data[1]; | |
1332 | tgdata = &resp->data[2]; | |
1333 | tgdata_len = resp->len - 2; /* nbtg + tg */ | |
1334 | ||
1335 | if (nbtg) { | |
1336 | rc = pn533_target_found(dev, tg, tgdata, tgdata_len); | |
c46ee386 AAJ |
1337 | |
1338 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1339 | if (rc == 0) { |
1340 | pn533_poll_reset_mod_list(dev); | |
1341 | return 0; | |
1342 | } | |
c46ee386 AAJ |
1343 | } |
1344 | ||
6fbbdc16 | 1345 | return -EAGAIN; |
c46ee386 AAJ |
1346 | } |
1347 | ||
9e2d493e | 1348 | static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev) |
ad3823ce | 1349 | { |
b5193e5d WR |
1350 | struct sk_buff *skb; |
1351 | u8 *felica, *nfcid3, *gb; | |
1352 | ||
9e2d493e WR |
1353 | u8 *gbytes = dev->gb; |
1354 | size_t gbytes_len = dev->gb_len; | |
1355 | ||
51d9e803 SO |
1356 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1357 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1358 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1359 | 0xff, 0xff}; /* System code */ | |
b5193e5d | 1360 | |
51d9e803 SO |
1361 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ |
1362 | 0x0, 0x0, 0x0, | |
1363 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce | 1364 | |
b5193e5d WR |
1365 | unsigned int skb_len = 36 + /* mode (1), mifare (6), |
1366 | felica (18), nfcid3 (10), gb_len (1) */ | |
1367 | gbytes_len + | |
1368 | 1; /* len Tk*/ | |
ad3823ce | 1369 | |
9e2d493e | 1370 | skb = pn533_alloc_skb(dev, skb_len); |
b5193e5d WR |
1371 | if (!skb) |
1372 | return NULL; | |
ad3823ce SO |
1373 | |
1374 | /* DEP support only */ | |
52f2eaee | 1375 | *skb_put(skb, 1) = PN533_INIT_TARGET_DEP; |
b5193e5d WR |
1376 | |
1377 | /* MIFARE params */ | |
1378 | memcpy(skb_put(skb, 6), mifare_params, 6); | |
51d9e803 SO |
1379 | |
1380 | /* Felica params */ | |
b5193e5d WR |
1381 | felica = skb_put(skb, 18); |
1382 | memcpy(felica, felica_params, 18); | |
1383 | get_random_bytes(felica + 2, 6); | |
51d9e803 SO |
1384 | |
1385 | /* NFCID3 */ | |
b5193e5d WR |
1386 | nfcid3 = skb_put(skb, 10); |
1387 | memset(nfcid3, 0, 10); | |
1388 | memcpy(nfcid3, felica, 8); | |
51d9e803 SO |
1389 | |
1390 | /* General bytes */ | |
b5193e5d | 1391 | *skb_put(skb, 1) = gbytes_len; |
51d9e803 | 1392 | |
b5193e5d WR |
1393 | gb = skb_put(skb, gbytes_len); |
1394 | memcpy(gb, gbytes, gbytes_len); | |
ad3823ce | 1395 | |
b5193e5d WR |
1396 | /* Len Tk */ |
1397 | *skb_put(skb, 1) = 0; | |
51d9e803 | 1398 | |
b5193e5d | 1399 | return skb; |
ad3823ce SO |
1400 | } |
1401 | ||
b1bb290a | 1402 | #define PN533_CMD_DATAEXCH_HEAD_LEN 1 |
103b34cf SO |
1403 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 |
1404 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
e4878823 | 1405 | struct sk_buff *resp) |
103b34cf | 1406 | { |
e4878823 | 1407 | u8 status; |
103b34cf SO |
1408 | |
1409 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1410 | ||
e4878823 WR |
1411 | if (IS_ERR(resp)) |
1412 | return PTR_ERR(resp); | |
103b34cf | 1413 | |
e4878823 WR |
1414 | status = resp->data[0]; |
1415 | skb_pull(resp, sizeof(status)); | |
103b34cf | 1416 | |
e4878823 | 1417 | if (status != 0) { |
103b34cf | 1418 | nfc_tm_deactivated(dev->nfc_dev); |
51ad304c | 1419 | dev->tgt_mode = 0; |
e4878823 | 1420 | dev_kfree_skb(resp); |
103b34cf SO |
1421 | return 0; |
1422 | } | |
1423 | ||
e4878823 | 1424 | return nfc_tm_data_received(dev->nfc_dev, resp); |
103b34cf SO |
1425 | } |
1426 | ||
1427 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1428 | { | |
1429 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
103b34cf | 1430 | |
e4878823 WR |
1431 | struct sk_buff *skb; |
1432 | int rc; | |
103b34cf | 1433 | |
e4878823 | 1434 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
103b34cf | 1435 | |
9e2d493e | 1436 | skb = pn533_alloc_skb(dev, 0); |
e4878823 | 1437 | if (!skb) |
103b34cf SO |
1438 | return; |
1439 | ||
e4878823 WR |
1440 | rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb, |
1441 | pn533_tm_get_data_complete, NULL); | |
103b34cf | 1442 | |
e4878823 WR |
1443 | if (rc < 0) |
1444 | dev_kfree_skb(skb); | |
103b34cf SO |
1445 | |
1446 | return; | |
1447 | } | |
1448 | ||
fc40a8c1 | 1449 | #define ATR_REQ_GB_OFFSET 17 |
b5193e5d | 1450 | static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp) |
fe7c5800 | 1451 | { |
b5193e5d | 1452 | u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb; |
fc40a8c1 | 1453 | size_t gb_len; |
103b34cf | 1454 | int rc; |
ad3823ce SO |
1455 | |
1456 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1457 | ||
b5193e5d | 1458 | if (resp->len < ATR_REQ_GB_OFFSET + 1) |
fc40a8c1 SO |
1459 | return -EINVAL; |
1460 | ||
b5193e5d WR |
1461 | mode = resp->data[0]; |
1462 | cmd = &resp->data[1]; | |
ad3823ce | 1463 | |
b5193e5d WR |
1464 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n", |
1465 | mode, resp->len); | |
ad3823ce | 1466 | |
b5193e5d WR |
1467 | if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) == |
1468 | PN533_INIT_TARGET_RESP_ACTIVE) | |
fc40a8c1 SO |
1469 | comm_mode = NFC_COMM_ACTIVE; |
1470 | ||
b5193e5d | 1471 | if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */ |
fc40a8c1 SO |
1472 | return -EOPNOTSUPP; |
1473 | ||
b5193e5d WR |
1474 | gb = cmd + ATR_REQ_GB_OFFSET; |
1475 | gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1); | |
fc40a8c1 | 1476 | |
103b34cf SO |
1477 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1478 | comm_mode, gb, gb_len); | |
1479 | if (rc < 0) { | |
1480 | nfc_dev_err(&dev->interface->dev, | |
1481 | "Error when signaling target activation"); | |
1482 | return rc; | |
1483 | } | |
1484 | ||
51ad304c | 1485 | dev->tgt_mode = 1; |
103b34cf SO |
1486 | queue_work(dev->wq, &dev->tg_work); |
1487 | ||
1488 | return 0; | |
fe7c5800 SO |
1489 | } |
1490 | ||
6fbbdc16 | 1491 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1492 | { |
37cf4fc6 | 1493 | struct pn533 *dev = (struct pn533 *)data; |
6fbbdc16 SO |
1494 | |
1495 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1496 | ||
1497 | /* An ack will cancel the last issued command (poll) */ | |
1498 | pn533_send_ack(dev, GFP_ATOMIC); | |
1499 | ||
1500 | dev->cancel_listen = 1; | |
1501 | ||
6fbbdc16 SO |
1502 | pn533_poll_next_mod(dev); |
1503 | ||
1504 | queue_work(dev->wq, &dev->poll_work); | |
1505 | } | |
1506 | ||
1507 | static int pn533_poll_complete(struct pn533 *dev, void *arg, | |
b5193e5d | 1508 | struct sk_buff *resp) |
6fbbdc16 SO |
1509 | { |
1510 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1511 | int rc; |
1512 | ||
6fbbdc16 | 1513 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1514 | |
b5193e5d WR |
1515 | if (IS_ERR(resp)) { |
1516 | rc = PTR_ERR(resp); | |
1517 | ||
1518 | nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d", | |
1519 | __func__, rc); | |
1520 | ||
1521 | if (rc == -ENOENT) { | |
1522 | if (dev->poll_mod_count != 0) | |
1523 | return rc; | |
1524 | else | |
1525 | goto stop_poll; | |
1526 | } else if (rc < 0) { | |
1527 | nfc_dev_err(&dev->interface->dev, | |
1528 | "Error %d when running poll", rc); | |
1529 | goto stop_poll; | |
1530 | } | |
6fbbdc16 | 1531 | } |
ad3823ce | 1532 | |
6fbbdc16 SO |
1533 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1534 | ||
b5193e5d | 1535 | if (cur_mod->len == 0) { /* Target mode */ |
6fbbdc16 | 1536 | del_timer(&dev->listen_timer); |
b5193e5d WR |
1537 | rc = pn533_init_target_complete(dev, resp); |
1538 | goto done; | |
6fbbdc16 SO |
1539 | } |
1540 | ||
b5193e5d WR |
1541 | /* Initiator mode */ |
1542 | rc = pn533_start_poll_complete(dev, resp); | |
1543 | if (!rc) | |
1544 | goto done; | |
6fbbdc16 | 1545 | |
95cb9e10 WR |
1546 | if (!dev->poll_mod_count) { |
1547 | nfc_dev_dbg(&dev->interface->dev, "Polling has been stoped."); | |
1548 | goto done; | |
1549 | } | |
1550 | ||
b5193e5d | 1551 | pn533_poll_next_mod(dev); |
6fbbdc16 SO |
1552 | queue_work(dev->wq, &dev->poll_work); |
1553 | ||
b5193e5d WR |
1554 | done: |
1555 | dev_kfree_skb(resp); | |
1556 | return rc; | |
6fbbdc16 SO |
1557 | |
1558 | stop_poll: | |
b5193e5d WR |
1559 | nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped"); |
1560 | ||
6fbbdc16 SO |
1561 | pn533_poll_reset_mod_list(dev); |
1562 | dev->poll_protocols = 0; | |
b5193e5d | 1563 | return rc; |
ad3823ce SO |
1564 | } |
1565 | ||
9e2d493e WR |
1566 | static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533 *dev, |
1567 | struct pn533_poll_modulations *mod) | |
c46ee386 | 1568 | { |
b5193e5d | 1569 | struct sk_buff *skb; |
c46ee386 | 1570 | |
9e2d493e | 1571 | skb = pn533_alloc_skb(dev, mod->len); |
b5193e5d WR |
1572 | if (!skb) |
1573 | return NULL; | |
c46ee386 | 1574 | |
b5193e5d | 1575 | memcpy(skb_put(skb, mod->len), &mod->data, mod->len); |
c46ee386 | 1576 | |
b5193e5d | 1577 | return skb; |
6fbbdc16 | 1578 | } |
c46ee386 | 1579 | |
6fbbdc16 SO |
1580 | static int pn533_send_poll_frame(struct pn533 *dev) |
1581 | { | |
b5193e5d WR |
1582 | struct pn533_poll_modulations *mod; |
1583 | struct sk_buff *skb; | |
6fbbdc16 | 1584 | int rc; |
b5193e5d | 1585 | u8 cmd_code; |
c46ee386 | 1586 | |
b5193e5d | 1587 | mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1588 | |
b5193e5d WR |
1589 | nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n", |
1590 | __func__, mod->len); | |
c46ee386 | 1591 | |
b5193e5d WR |
1592 | if (mod->len == 0) { /* Listen mode */ |
1593 | cmd_code = PN533_CMD_TG_INIT_AS_TARGET; | |
9e2d493e | 1594 | skb = pn533_alloc_poll_tg_frame(dev); |
b5193e5d WR |
1595 | } else { /* Polling mode */ |
1596 | cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET; | |
9e2d493e | 1597 | skb = pn533_alloc_poll_in_frame(dev, mod); |
b5193e5d WR |
1598 | } |
1599 | ||
1600 | if (!skb) { | |
1601 | nfc_dev_err(&dev->interface->dev, "Failed to allocate skb."); | |
1602 | return -ENOMEM; | |
1603 | } | |
1604 | ||
1605 | rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete, | |
1606 | NULL); | |
1607 | if (rc < 0) { | |
1608 | dev_kfree_skb(skb); | |
6fbbdc16 | 1609 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); |
b5193e5d | 1610 | } |
c46ee386 | 1611 | |
6fbbdc16 SO |
1612 | return rc; |
1613 | } | |
1614 | ||
1615 | static void pn533_wq_poll(struct work_struct *work) | |
1616 | { | |
1617 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1618 | struct pn533_poll_modulations *cur_mod; | |
1619 | int rc; | |
1620 | ||
1621 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1622 | ||
1623 | nfc_dev_dbg(&dev->interface->dev, | |
1624 | "%s cancel_listen %d modulation len %d", | |
1625 | __func__, dev->cancel_listen, cur_mod->len); | |
1626 | ||
1627 | if (dev->cancel_listen == 1) { | |
1628 | dev->cancel_listen = 0; | |
1629 | usb_kill_urb(dev->in_urb); | |
c46ee386 AAJ |
1630 | } |
1631 | ||
6fbbdc16 SO |
1632 | rc = pn533_send_poll_frame(dev); |
1633 | if (rc) | |
1634 | return; | |
c46ee386 | 1635 | |
6fbbdc16 SO |
1636 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1637 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1638 | |
6fbbdc16 | 1639 | return; |
c46ee386 AAJ |
1640 | } |
1641 | ||
fe7c5800 SO |
1642 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1643 | u32 im_protocols, u32 tm_protocols) | |
1644 | { | |
1645 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1646 | ||
1647 | nfc_dev_dbg(&dev->interface->dev, | |
1648 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1649 | __func__, im_protocols, tm_protocols); | |
1650 | ||
1651 | if (dev->tgt_active_prot) { | |
1652 | nfc_dev_err(&dev->interface->dev, | |
1653 | "Cannot poll with a target already activated"); | |
1654 | return -EBUSY; | |
1655 | } | |
1656 | ||
51ad304c SO |
1657 | if (dev->tgt_mode) { |
1658 | nfc_dev_err(&dev->interface->dev, | |
1659 | "Cannot poll while already being activated"); | |
1660 | return -EBUSY; | |
1661 | } | |
1662 | ||
6fbbdc16 SO |
1663 | if (tm_protocols) { |
1664 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1665 | if (dev->gb == NULL) | |
1666 | tm_protocols = 0; | |
1667 | } | |
ad3823ce | 1668 | |
6fbbdc16 SO |
1669 | dev->poll_mod_curr = 0; |
1670 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1671 | dev->poll_protocols = im_protocols; | |
1672 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1673 | |
6fbbdc16 | 1674 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1675 | } |
1676 | ||
c46ee386 AAJ |
1677 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1678 | { | |
1679 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1680 | ||
1681 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1682 | ||
6fbbdc16 SO |
1683 | del_timer(&dev->listen_timer); |
1684 | ||
c46ee386 | 1685 | if (!dev->poll_mod_count) { |
6ca55372 WR |
1686 | nfc_dev_dbg(&dev->interface->dev, |
1687 | "Polling operation was not running"); | |
c46ee386 AAJ |
1688 | return; |
1689 | } | |
1690 | ||
1691 | /* An ack will cancel the last issued command (poll) */ | |
1692 | pn533_send_ack(dev, GFP_KERNEL); | |
1693 | ||
1694 | /* prevent pn533_start_poll_complete to issue a new poll meanwhile */ | |
1695 | usb_kill_urb(dev->in_urb); | |
7c2a04a9 SO |
1696 | |
1697 | pn533_poll_reset_mod_list(dev); | |
c46ee386 AAJ |
1698 | } |
1699 | ||
1700 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1701 | { | |
cb950d93 | 1702 | struct pn533_cmd_activate_response *rsp; |
541d920b | 1703 | u16 gt_len; |
c46ee386 AAJ |
1704 | int rc; |
1705 | ||
cb950d93 WR |
1706 | struct sk_buff *skb; |
1707 | struct sk_buff *resp; | |
c46ee386 | 1708 | |
cb950d93 | 1709 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
c46ee386 | 1710 | |
9e2d493e | 1711 | skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/ |
cb950d93 WR |
1712 | if (!skb) |
1713 | return -ENOMEM; | |
c46ee386 | 1714 | |
cb950d93 WR |
1715 | *skb_put(skb, sizeof(u8)) = 1; /* TG */ |
1716 | *skb_put(skb, sizeof(u8)) = 0; /* Next */ | |
c46ee386 | 1717 | |
cb950d93 WR |
1718 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb); |
1719 | if (IS_ERR(resp)) | |
1720 | return PTR_ERR(resp); | |
c46ee386 | 1721 | |
37cf4fc6 | 1722 | rsp = (struct pn533_cmd_activate_response *)resp->data; |
cb950d93 | 1723 | rc = rsp->status & PN533_CMD_RET_MASK; |
8a0ecfe7 | 1724 | if (rc != PN533_CMD_RET_SUCCESS) { |
a45e1c8d WR |
1725 | nfc_dev_err(&dev->interface->dev, |
1726 | "Target activation failed (error 0x%x)", rc); | |
cb950d93 | 1727 | dev_kfree_skb(resp); |
c46ee386 | 1728 | return -EIO; |
8a0ecfe7 | 1729 | } |
c46ee386 | 1730 | |
541d920b | 1731 | /* ATR_RES general bytes are located at offset 16 */ |
cb950d93 WR |
1732 | gt_len = resp->len - 16; |
1733 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len); | |
541d920b | 1734 | |
cb950d93 | 1735 | dev_kfree_skb(resp); |
541d920b | 1736 | return rc; |
c46ee386 AAJ |
1737 | } |
1738 | ||
90099433 EL |
1739 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1740 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1741 | { |
1742 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1743 | int rc; | |
1744 | ||
1745 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
5d467742 | 1746 | protocol); |
c46ee386 AAJ |
1747 | |
1748 | if (dev->poll_mod_count) { | |
6ca55372 WR |
1749 | nfc_dev_err(&dev->interface->dev, |
1750 | "Cannot activate while polling"); | |
c46ee386 AAJ |
1751 | return -EBUSY; |
1752 | } | |
1753 | ||
1754 | if (dev->tgt_active_prot) { | |
6ca55372 WR |
1755 | nfc_dev_err(&dev->interface->dev, |
1756 | "There is already an active target"); | |
c46ee386 AAJ |
1757 | return -EBUSY; |
1758 | } | |
1759 | ||
1760 | if (!dev->tgt_available_prots) { | |
6ca55372 WR |
1761 | nfc_dev_err(&dev->interface->dev, |
1762 | "There is no available target to activate"); | |
c46ee386 AAJ |
1763 | return -EINVAL; |
1764 | } | |
1765 | ||
1766 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
6ca55372 WR |
1767 | nfc_dev_err(&dev->interface->dev, |
1768 | "Target doesn't support requested proto %u", | |
1769 | protocol); | |
c46ee386 AAJ |
1770 | return -EINVAL; |
1771 | } | |
1772 | ||
1773 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1774 | rc = pn533_activate_target_nfcdep(dev); | |
1775 | if (rc) { | |
6ca55372 WR |
1776 | nfc_dev_err(&dev->interface->dev, |
1777 | "Activating target with DEP failed %d", rc); | |
c46ee386 AAJ |
1778 | return rc; |
1779 | } | |
1780 | } | |
1781 | ||
1782 | dev->tgt_active_prot = protocol; | |
1783 | dev->tgt_available_prots = 0; | |
1784 | ||
1785 | return 0; | |
1786 | } | |
1787 | ||
90099433 EL |
1788 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1789 | struct nfc_target *target) | |
c46ee386 AAJ |
1790 | { |
1791 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
cb950d93 WR |
1792 | |
1793 | struct sk_buff *skb; | |
1794 | struct sk_buff *resp; | |
1795 | ||
c46ee386 AAJ |
1796 | int rc; |
1797 | ||
1798 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1799 | ||
1800 | if (!dev->tgt_active_prot) { | |
1801 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
1802 | return; | |
1803 | } | |
1804 | ||
1805 | dev->tgt_active_prot = 0; | |
6ff73fd2 SO |
1806 | skb_queue_purge(&dev->resp_q); |
1807 | ||
9e2d493e | 1808 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
1809 | if (!skb) |
1810 | return; | |
c46ee386 | 1811 | |
cb950d93 | 1812 | *skb_put(skb, 1) = 1; /* TG*/ |
c46ee386 | 1813 | |
cb950d93 WR |
1814 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb); |
1815 | if (IS_ERR(resp)) | |
c46ee386 | 1816 | return; |
c46ee386 | 1817 | |
cb950d93 | 1818 | rc = resp->data[0] & PN533_CMD_RET_MASK; |
c46ee386 | 1819 | if (rc != PN533_CMD_RET_SUCCESS) |
6ca55372 WR |
1820 | nfc_dev_err(&dev->interface->dev, |
1821 | "Error 0x%x when releasing the target", rc); | |
c46ee386 | 1822 | |
cb950d93 | 1823 | dev_kfree_skb(resp); |
c46ee386 AAJ |
1824 | return; |
1825 | } | |
1826 | ||
361f3cb7 SO |
1827 | |
1828 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
13003649 | 1829 | struct sk_buff *resp) |
361f3cb7 | 1830 | { |
13003649 | 1831 | struct pn533_cmd_jump_dep_response *rsp; |
361f3cb7 SO |
1832 | u8 target_gt_len; |
1833 | int rc; | |
13003649 | 1834 | u8 active = *(u8 *)arg; |
70418e6e WR |
1835 | |
1836 | kfree(arg); | |
361f3cb7 | 1837 | |
13003649 WR |
1838 | if (IS_ERR(resp)) |
1839 | return PTR_ERR(resp); | |
361f3cb7 SO |
1840 | |
1841 | if (dev->tgt_available_prots && | |
1842 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
1843 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1844 | "The target does not support DEP"); |
13003649 WR |
1845 | rc = -EINVAL; |
1846 | goto error; | |
361f3cb7 SO |
1847 | } |
1848 | ||
13003649 WR |
1849 | rsp = (struct pn533_cmd_jump_dep_response *)resp->data; |
1850 | ||
1851 | rc = rsp->status & PN533_CMD_RET_MASK; | |
361f3cb7 SO |
1852 | if (rc != PN533_CMD_RET_SUCCESS) { |
1853 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 1854 | "Bringing DEP link up failed (error 0x%x)", rc); |
13003649 | 1855 | goto error; |
361f3cb7 SO |
1856 | } |
1857 | ||
1858 | if (!dev->tgt_available_prots) { | |
13003649 WR |
1859 | struct nfc_target nfc_target; |
1860 | ||
361f3cb7 SO |
1861 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); |
1862 | ||
1863 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 | 1864 | nfc_target.nfcid1_len = 10; |
13003649 | 1865 | memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len); |
361f3cb7 SO |
1866 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
1867 | if (rc) | |
13003649 | 1868 | goto error; |
361f3cb7 SO |
1869 | |
1870 | dev->tgt_available_prots = 0; | |
1871 | } | |
1872 | ||
1873 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
1874 | ||
1875 | /* ATR_RES general bytes are located at offset 17 */ | |
13003649 | 1876 | target_gt_len = resp->len - 17; |
361f3cb7 | 1877 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, |
13003649 | 1878 | rsp->gt, target_gt_len); |
361f3cb7 SO |
1879 | if (rc == 0) |
1880 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
13003649 WR |
1881 | dev->nfc_dev->targets[0].idx, |
1882 | !active, NFC_RF_INITIATOR); | |
361f3cb7 | 1883 | |
13003649 WR |
1884 | error: |
1885 | dev_kfree_skb(resp); | |
1886 | return rc; | |
361f3cb7 SO |
1887 | } |
1888 | ||
41a8ec49 SO |
1889 | static int pn533_mod_to_baud(struct pn533 *dev) |
1890 | { | |
1891 | switch (dev->poll_mod_curr) { | |
1892 | case PN533_POLL_MOD_106KBPS_A: | |
1893 | return 0; | |
1894 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1895 | return 1; | |
1896 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1897 | return 2; | |
1898 | default: | |
1899 | return -EINVAL; | |
1900 | } | |
1901 | } | |
1902 | ||
d7f3345d | 1903 | #define PASSIVE_DATA_LEN 5 |
90099433 | 1904 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
37cf4fc6 | 1905 | u8 comm_mode, u8 *gb, size_t gb_len) |
361f3cb7 SO |
1906 | { |
1907 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
13003649 WR |
1908 | struct sk_buff *skb; |
1909 | int rc, baud, skb_len; | |
1910 | u8 *next, *arg; | |
1911 | ||
d7f3345d | 1912 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; |
361f3cb7 SO |
1913 | |
1914 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1915 | ||
361f3cb7 SO |
1916 | if (dev->poll_mod_count) { |
1917 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1918 | "Cannot bring the DEP link up while polling"); |
361f3cb7 SO |
1919 | return -EBUSY; |
1920 | } | |
1921 | ||
1922 | if (dev->tgt_active_prot) { | |
1923 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1924 | "There is already an active target"); |
361f3cb7 SO |
1925 | return -EBUSY; |
1926 | } | |
1927 | ||
41a8ec49 SO |
1928 | baud = pn533_mod_to_baud(dev); |
1929 | if (baud < 0) { | |
1930 | nfc_dev_err(&dev->interface->dev, | |
1931 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
1932 | return baud; | |
1933 | } | |
1934 | ||
13003649 | 1935 | skb_len = 3 + gb_len; /* ActPass + BR + Next */ |
d7f3345d | 1936 | if (comm_mode == NFC_COMM_PASSIVE) |
13003649 | 1937 | skb_len += PASSIVE_DATA_LEN; |
d7f3345d | 1938 | |
9e2d493e | 1939 | skb = pn533_alloc_skb(dev, skb_len); |
13003649 | 1940 | if (!skb) |
361f3cb7 SO |
1941 | return -ENOMEM; |
1942 | ||
13003649 WR |
1943 | *skb_put(skb, 1) = !comm_mode; /* ActPass */ |
1944 | *skb_put(skb, 1) = baud; /* Baud rate */ | |
1945 | ||
1946 | next = skb_put(skb, 1); /* Next */ | |
1947 | *next = 0; | |
361f3cb7 | 1948 | |
13003649 WR |
1949 | if (comm_mode == NFC_COMM_PASSIVE && baud > 0) { |
1950 | memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, | |
1951 | PASSIVE_DATA_LEN); | |
1952 | *next |= 1; | |
d7f3345d SO |
1953 | } |
1954 | ||
47807d3d | 1955 | if (gb != NULL && gb_len > 0) { |
13003649 WR |
1956 | memcpy(skb_put(skb, gb_len), gb, gb_len); |
1957 | *next |= 4; /* We have some Gi */ | |
361f3cb7 | 1958 | } else { |
13003649 | 1959 | *next = 0; |
361f3cb7 SO |
1960 | } |
1961 | ||
13003649 WR |
1962 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
1963 | if (!arg) { | |
1964 | dev_kfree_skb(skb); | |
1965 | return -ENOMEM; | |
1966 | } | |
361f3cb7 | 1967 | |
13003649 | 1968 | *arg = !comm_mode; |
361f3cb7 | 1969 | |
13003649 WR |
1970 | rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb, |
1971 | pn533_in_dep_link_up_complete, arg); | |
1972 | ||
1973 | if (rc < 0) { | |
1974 | dev_kfree_skb(skb); | |
1975 | kfree(arg); | |
1976 | } | |
361f3cb7 SO |
1977 | |
1978 | return rc; | |
1979 | } | |
1980 | ||
1981 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
1982 | { | |
6fbbdc16 SO |
1983 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
1984 | ||
fcfafc76 WR |
1985 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
1986 | ||
6fbbdc16 SO |
1987 | pn533_poll_reset_mod_list(dev); |
1988 | ||
51ad304c SO |
1989 | if (dev->tgt_mode || dev->tgt_active_prot) { |
1990 | pn533_send_ack(dev, GFP_KERNEL); | |
1991 | usb_kill_urb(dev->in_urb); | |
1992 | } | |
1993 | ||
1994 | dev->tgt_active_prot = 0; | |
1995 | dev->tgt_mode = 0; | |
1996 | ||
1997 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
1998 | |
1999 | return 0; | |
2000 | } | |
2001 | ||
c46ee386 | 2002 | struct pn533_data_exchange_arg { |
c46ee386 AAJ |
2003 | data_exchange_cb_t cb; |
2004 | void *cb_context; | |
2005 | }; | |
2006 | ||
6ff73fd2 SO |
2007 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
2008 | { | |
2009 | struct sk_buff *skb, *tmp, *t; | |
2010 | unsigned int skb_len = 0, tmp_len = 0; | |
2011 | ||
fcfafc76 | 2012 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
6ff73fd2 SO |
2013 | |
2014 | if (skb_queue_empty(&dev->resp_q)) | |
2015 | return NULL; | |
2016 | ||
2017 | if (skb_queue_len(&dev->resp_q) == 1) { | |
2018 | skb = skb_dequeue(&dev->resp_q); | |
2019 | goto out; | |
2020 | } | |
2021 | ||
2022 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
2023 | skb_len += tmp->len; | |
2024 | ||
2025 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
2026 | __func__, skb_len); | |
2027 | ||
2028 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
2029 | if (skb == NULL) | |
2030 | goto out; | |
2031 | ||
2032 | skb_put(skb, skb_len); | |
2033 | ||
2034 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
2035 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
2036 | tmp_len += tmp->len; | |
2037 | } | |
2038 | ||
2039 | out: | |
2040 | skb_queue_purge(&dev->resp_q); | |
2041 | ||
2042 | return skb; | |
2043 | } | |
2044 | ||
c46ee386 | 2045 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
b1e666f5 | 2046 | struct sk_buff *resp) |
c46ee386 AAJ |
2047 | { |
2048 | struct pn533_data_exchange_arg *arg = _arg; | |
b1e666f5 WR |
2049 | struct sk_buff *skb; |
2050 | int rc = 0; | |
2051 | u8 status, ret, mi; | |
c46ee386 AAJ |
2052 | |
2053 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2054 | ||
b1e666f5 WR |
2055 | if (IS_ERR(resp)) { |
2056 | rc = PTR_ERR(resp); | |
2057 | goto _error; | |
c46ee386 AAJ |
2058 | } |
2059 | ||
b1e666f5 WR |
2060 | status = resp->data[0]; |
2061 | ret = status & PN533_CMD_RET_MASK; | |
2062 | mi = status & PN533_CMD_MI_MASK; | |
2063 | ||
2064 | skb_pull(resp, sizeof(status)); | |
c46ee386 | 2065 | |
b1e666f5 WR |
2066 | if (ret != PN533_CMD_RET_SUCCESS) { |
2067 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 2068 | "Exchanging data failed (error 0x%x)", ret); |
b1e666f5 | 2069 | rc = -EIO; |
c46ee386 AAJ |
2070 | goto error; |
2071 | } | |
2072 | ||
b1e666f5 | 2073 | skb_queue_tail(&dev->resp_q, resp); |
6ff73fd2 | 2074 | |
b1e666f5 WR |
2075 | if (mi) { |
2076 | dev->cmd_complete_mi_arg = arg; | |
6ff73fd2 SO |
2077 | queue_work(dev->wq, &dev->mi_work); |
2078 | return -EINPROGRESS; | |
c46ee386 AAJ |
2079 | } |
2080 | ||
6ff73fd2 | 2081 | skb = pn533_build_response(dev); |
b1e666f5 | 2082 | if (!skb) |
6ff73fd2 | 2083 | goto error; |
c46ee386 | 2084 | |
6ff73fd2 | 2085 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
2086 | kfree(arg); |
2087 | return 0; | |
2088 | ||
2089 | error: | |
b1e666f5 WR |
2090 | dev_kfree_skb(resp); |
2091 | _error: | |
6ff73fd2 | 2092 | skb_queue_purge(&dev->resp_q); |
b1e666f5 | 2093 | arg->cb(arg->cb_context, NULL, rc); |
c46ee386 | 2094 | kfree(arg); |
b1e666f5 | 2095 | return rc; |
c46ee386 AAJ |
2096 | } |
2097 | ||
be9ae4ce SO |
2098 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
2099 | struct nfc_target *target, struct sk_buff *skb, | |
2100 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
2101 | { |
2102 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
b1e666f5 | 2103 | struct pn533_data_exchange_arg *arg = NULL; |
c46ee386 AAJ |
2104 | int rc; |
2105 | ||
2106 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2107 | ||
b1e666f5 WR |
2108 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
2109 | /* TODO: Implement support to multi-part data exchange */ | |
2110 | nfc_dev_err(&dev->interface->dev, | |
2111 | "Data length greater than the max allowed: %d", | |
2112 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2113 | rc = -ENOSYS; | |
2114 | goto error; | |
2115 | } | |
2116 | ||
c46ee386 | 2117 | if (!dev->tgt_active_prot) { |
6ca55372 WR |
2118 | nfc_dev_err(&dev->interface->dev, |
2119 | "Can't exchange data if there is no active target"); | |
c46ee386 AAJ |
2120 | rc = -EINVAL; |
2121 | goto error; | |
2122 | } | |
2123 | ||
b1e666f5 | 2124 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
c46ee386 AAJ |
2125 | if (!arg) { |
2126 | rc = -ENOMEM; | |
b1e666f5 | 2127 | goto error; |
c46ee386 AAJ |
2128 | } |
2129 | ||
c46ee386 AAJ |
2130 | arg->cb = cb; |
2131 | arg->cb_context = cb_context; | |
2132 | ||
b1e666f5 WR |
2133 | switch (dev->device_type) { |
2134 | case PN533_DEVICE_PASORI: | |
2135 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2136 | rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU, | |
2137 | skb, | |
2138 | pn533_data_exchange_complete, | |
2139 | arg); | |
2140 | ||
2141 | break; | |
2142 | } | |
2143 | default: | |
2144 | *skb_push(skb, sizeof(u8)) = 1; /*TG*/ | |
2145 | ||
2146 | rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE, | |
2147 | skb, pn533_data_exchange_complete, | |
2148 | arg); | |
2149 | ||
2150 | break; | |
c46ee386 AAJ |
2151 | } |
2152 | ||
b1e666f5 WR |
2153 | if (rc < 0) /* rc from send_async */ |
2154 | goto error; | |
2155 | ||
c46ee386 AAJ |
2156 | return 0; |
2157 | ||
c46ee386 | 2158 | error: |
b1e666f5 WR |
2159 | kfree(arg); |
2160 | dev_kfree_skb(skb); | |
c46ee386 AAJ |
2161 | return rc; |
2162 | } | |
2163 | ||
dadb06f2 | 2164 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
e4878823 | 2165 | struct sk_buff *resp) |
dadb06f2 | 2166 | { |
e4878823 | 2167 | u8 status; |
5b412fd1 | 2168 | |
dadb06f2 SO |
2169 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2170 | ||
e4878823 WR |
2171 | if (IS_ERR(resp)) |
2172 | return PTR_ERR(resp); | |
5b412fd1 | 2173 | |
e4878823 | 2174 | status = resp->data[0]; |
dadb06f2 | 2175 | |
e4878823 | 2176 | dev_kfree_skb(resp); |
dadb06f2 | 2177 | |
e4878823 | 2178 | if (status != 0) { |
dadb06f2 SO |
2179 | nfc_tm_deactivated(dev->nfc_dev); |
2180 | ||
51ad304c SO |
2181 | dev->tgt_mode = 0; |
2182 | ||
dadb06f2 SO |
2183 | return 0; |
2184 | } | |
2185 | ||
2186 | queue_work(dev->wq, &dev->tg_work); | |
2187 | ||
2188 | return 0; | |
2189 | } | |
2190 | ||
2191 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2192 | { | |
2193 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
dadb06f2 SO |
2194 | int rc; |
2195 | ||
2196 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2197 | ||
e4878823 | 2198 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
dadb06f2 | 2199 | nfc_dev_err(&dev->interface->dev, |
e4878823 WR |
2200 | "Data length greater than the max allowed: %d", |
2201 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2202 | return -ENOSYS; | |
dadb06f2 SO |
2203 | } |
2204 | ||
e4878823 WR |
2205 | rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb, |
2206 | pn533_tm_send_complete, NULL); | |
2207 | if (rc < 0) | |
2208 | dev_kfree_skb(skb); | |
dadb06f2 SO |
2209 | |
2210 | return rc; | |
2211 | } | |
2212 | ||
6ff73fd2 SO |
2213 | static void pn533_wq_mi_recv(struct work_struct *work) |
2214 | { | |
2215 | struct pn533 *dev = container_of(work, struct pn533, mi_work); | |
b1e666f5 WR |
2216 | |
2217 | struct sk_buff *skb; | |
6ff73fd2 SO |
2218 | int rc; |
2219 | ||
2220 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2221 | ||
9e2d493e | 2222 | skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN); |
b1e666f5 WR |
2223 | if (!skb) |
2224 | goto error; | |
6ff73fd2 | 2225 | |
b1e666f5 WR |
2226 | switch (dev->device_type) { |
2227 | case PN533_DEVICE_PASORI: | |
2228 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2229 | rc = pn533_send_cmd_direct_async(dev, | |
2230 | PN533_CMD_IN_COMM_THRU, | |
2231 | skb, | |
2232 | pn533_data_exchange_complete, | |
2233 | dev->cmd_complete_mi_arg); | |
6ff73fd2 | 2234 | |
b1e666f5 WR |
2235 | break; |
2236 | } | |
2237 | default: | |
2238 | *skb_put(skb, sizeof(u8)) = 1; /*TG*/ | |
6ff73fd2 | 2239 | |
b1e666f5 WR |
2240 | rc = pn533_send_cmd_direct_async(dev, |
2241 | PN533_CMD_IN_DATA_EXCHANGE, | |
2242 | skb, | |
2243 | pn533_data_exchange_complete, | |
2244 | dev->cmd_complete_mi_arg); | |
b1bb290a | 2245 | |
b1e666f5 | 2246 | break; |
6ff73fd2 SO |
2247 | } |
2248 | ||
b1e666f5 | 2249 | if (rc == 0) /* success */ |
6ff73fd2 SO |
2250 | return; |
2251 | ||
b1e666f5 WR |
2252 | nfc_dev_err(&dev->interface->dev, |
2253 | "Error %d when trying to perform data_exchange", rc); | |
6ff73fd2 | 2254 | |
b1e666f5 WR |
2255 | dev_kfree_skb(skb); |
2256 | kfree(dev->cmd_complete_arg); | |
6ff73fd2 | 2257 | |
b1e666f5 | 2258 | error: |
6ff73fd2 | 2259 | pn533_send_ack(dev, GFP_KERNEL); |
5d50b364 | 2260 | queue_work(dev->wq, &dev->cmd_work); |
6ff73fd2 SO |
2261 | } |
2262 | ||
c46ee386 AAJ |
2263 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2264 | u8 cfgdata_len) | |
2265 | { | |
cb950d93 WR |
2266 | struct sk_buff *skb; |
2267 | struct sk_buff *resp; | |
2268 | ||
2269 | int skb_len; | |
c46ee386 AAJ |
2270 | |
2271 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2272 | ||
cb950d93 | 2273 | skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */ |
c46ee386 | 2274 | |
9e2d493e | 2275 | skb = pn533_alloc_skb(dev, skb_len); |
cb950d93 WR |
2276 | if (!skb) |
2277 | return -ENOMEM; | |
c46ee386 | 2278 | |
cb950d93 WR |
2279 | *skb_put(skb, sizeof(cfgitem)) = cfgitem; |
2280 | memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len); | |
c46ee386 | 2281 | |
cb950d93 WR |
2282 | resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb); |
2283 | if (IS_ERR(resp)) | |
2284 | return PTR_ERR(resp); | |
c46ee386 | 2285 | |
cb950d93 WR |
2286 | dev_kfree_skb(resp); |
2287 | return 0; | |
2288 | } | |
2289 | ||
2290 | static int pn533_get_firmware_version(struct pn533 *dev, | |
2291 | struct pn533_fw_version *fv) | |
2292 | { | |
2293 | struct sk_buff *skb; | |
2294 | struct sk_buff *resp; | |
2295 | ||
9e2d493e | 2296 | skb = pn533_alloc_skb(dev, 0); |
cb950d93 WR |
2297 | if (!skb) |
2298 | return -ENOMEM; | |
2299 | ||
2300 | resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb); | |
2301 | if (IS_ERR(resp)) | |
2302 | return PTR_ERR(resp); | |
2303 | ||
2304 | fv->ic = resp->data[0]; | |
2305 | fv->ver = resp->data[1]; | |
2306 | fv->rev = resp->data[2]; | |
2307 | fv->support = resp->data[3]; | |
2308 | ||
2309 | dev_kfree_skb(resp); | |
2310 | return 0; | |
c46ee386 AAJ |
2311 | } |
2312 | ||
f75c2913 | 2313 | static int pn533_pasori_fw_reset(struct pn533 *dev) |
5c7b0531 | 2314 | { |
cb950d93 WR |
2315 | struct sk_buff *skb; |
2316 | struct sk_buff *resp; | |
5c7b0531 SO |
2317 | |
2318 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2319 | ||
9e2d493e | 2320 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
2321 | if (!skb) |
2322 | return -ENOMEM; | |
5c7b0531 | 2323 | |
cb950d93 | 2324 | *skb_put(skb, sizeof(u8)) = 0x1; |
5c7b0531 | 2325 | |
cb950d93 WR |
2326 | resp = pn533_send_cmd_sync(dev, 0x18, skb); |
2327 | if (IS_ERR(resp)) | |
2328 | return PTR_ERR(resp); | |
5c7b0531 | 2329 | |
cb950d93 | 2330 | dev_kfree_skb(resp); |
5c7b0531 | 2331 | |
94c5c156 | 2332 | return 0; |
5c7b0531 SO |
2333 | } |
2334 | ||
2335 | static struct nfc_ops pn533_nfc_ops = { | |
8b3fe7b5 IE |
2336 | .dev_up = NULL, |
2337 | .dev_down = NULL, | |
361f3cb7 SO |
2338 | .dep_link_up = pn533_dep_link_up, |
2339 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2340 | .start_poll = pn533_start_poll, |
2341 | .stop_poll = pn533_stop_poll, | |
2342 | .activate_target = pn533_activate_target, | |
2343 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2344 | .im_transceive = pn533_transceive, |
dadb06f2 | 2345 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2346 | }; |
2347 | ||
5c7b0531 SO |
2348 | static int pn533_setup(struct pn533 *dev) |
2349 | { | |
2350 | struct pn533_config_max_retries max_retries; | |
2351 | struct pn533_config_timing timing; | |
2352 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2353 | int rc; | |
2354 | ||
2355 | switch (dev->device_type) { | |
2356 | case PN533_DEVICE_STD: | |
2357 | max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS; | |
2358 | max_retries.mx_rty_psl = 2; | |
2359 | max_retries.mx_rty_passive_act = | |
2360 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2361 | ||
2362 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2363 | timing.atr_res_timeout = PN533_CONFIG_TIMING_204; | |
2364 | timing.dep_timeout = PN533_CONFIG_TIMING_409; | |
2365 | ||
2366 | break; | |
2367 | ||
2368 | case PN533_DEVICE_PASORI: | |
2369 | max_retries.mx_rty_atr = 0x2; | |
2370 | max_retries.mx_rty_psl = 0x1; | |
2371 | max_retries.mx_rty_passive_act = | |
2372 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2373 | ||
2374 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2375 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2376 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2377 | ||
2378 | break; | |
2379 | ||
2380 | default: | |
2381 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2382 | dev->device_type); | |
2383 | return -EINVAL; | |
2384 | } | |
2385 | ||
2386 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2387 | (u8 *)&max_retries, sizeof(max_retries)); | |
2388 | if (rc) { | |
2389 | nfc_dev_err(&dev->interface->dev, | |
2390 | "Error on setting MAX_RETRIES config"); | |
2391 | return rc; | |
2392 | } | |
2393 | ||
2394 | ||
2395 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2396 | (u8 *)&timing, sizeof(timing)); | |
2397 | if (rc) { | |
2398 | nfc_dev_err(&dev->interface->dev, | |
2399 | "Error on setting RF timings"); | |
2400 | return rc; | |
2401 | } | |
2402 | ||
2403 | switch (dev->device_type) { | |
2404 | case PN533_DEVICE_STD: | |
2405 | break; | |
2406 | ||
2407 | case PN533_DEVICE_PASORI: | |
f75c2913 | 2408 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2409 | |
2410 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2411 | pasori_cfg, 3); | |
2412 | if (rc) { | |
2413 | nfc_dev_err(&dev->interface->dev, | |
2414 | "Error while settings PASORI config"); | |
2415 | return rc; | |
2416 | } | |
2417 | ||
f75c2913 | 2418 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2419 | |
2420 | break; | |
2421 | } | |
2422 | ||
2423 | return 0; | |
2424 | } | |
2425 | ||
c46ee386 AAJ |
2426 | static int pn533_probe(struct usb_interface *interface, |
2427 | const struct usb_device_id *id) | |
2428 | { | |
cb950d93 | 2429 | struct pn533_fw_version fw_ver; |
c46ee386 AAJ |
2430 | struct pn533 *dev; |
2431 | struct usb_host_interface *iface_desc; | |
2432 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2433 | int in_endpoint = 0; |
2434 | int out_endpoint = 0; | |
2435 | int rc = -ENOMEM; | |
2436 | int i; | |
2437 | u32 protocols; | |
2438 | ||
2439 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2440 | if (!dev) | |
2441 | return -ENOMEM; | |
2442 | ||
2443 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2444 | dev->interface = interface; | |
0201ed03 | 2445 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2446 | |
2447 | iface_desc = interface->cur_altsetting; | |
2448 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2449 | endpoint = &iface_desc->endpoint[i].desc; | |
2450 | ||
8d25ca79 | 2451 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) |
c46ee386 | 2452 | in_endpoint = endpoint->bEndpointAddress; |
c46ee386 | 2453 | |
8d25ca79 | 2454 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) |
c46ee386 | 2455 | out_endpoint = endpoint->bEndpointAddress; |
c46ee386 AAJ |
2456 | } |
2457 | ||
2458 | if (!in_endpoint || !out_endpoint) { | |
6ca55372 WR |
2459 | nfc_dev_err(&interface->dev, |
2460 | "Could not find bulk-in or bulk-out endpoint"); | |
c46ee386 AAJ |
2461 | rc = -ENODEV; |
2462 | goto error; | |
2463 | } | |
2464 | ||
c46ee386 | 2465 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); |
c46ee386 AAJ |
2466 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); |
2467 | ||
a5798094 | 2468 | if (!dev->in_urb || !dev->out_urb) |
c46ee386 AAJ |
2469 | goto error; |
2470 | ||
2471 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
5d467742 WR |
2472 | usb_rcvbulkpipe(dev->udev, in_endpoint), |
2473 | NULL, 0, NULL, dev); | |
c46ee386 | 2474 | usb_fill_bulk_urb(dev->out_urb, dev->udev, |
5d467742 WR |
2475 | usb_sndbulkpipe(dev->udev, out_endpoint), |
2476 | NULL, 0, pn533_send_complete, dev); | |
c46ee386 | 2477 | |
5d50b364 SO |
2478 | INIT_WORK(&dev->cmd_work, pn533_wq_cmd); |
2479 | INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete); | |
6ff73fd2 | 2480 | INIT_WORK(&dev->mi_work, pn533_wq_mi_recv); |
103b34cf | 2481 | INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); |
6fbbdc16 | 2482 | INIT_WORK(&dev->poll_work, pn533_wq_poll); |
58637c9b | 2483 | dev->wq = alloc_ordered_workqueue("pn533", 0); |
4849f85e SO |
2484 | if (dev->wq == NULL) |
2485 | goto error; | |
c46ee386 | 2486 | |
6fbbdc16 SO |
2487 | init_timer(&dev->listen_timer); |
2488 | dev->listen_timer.data = (unsigned long) dev; | |
2489 | dev->listen_timer.function = pn533_listen_mode_timer; | |
2490 | ||
6ff73fd2 SO |
2491 | skb_queue_head_init(&dev->resp_q); |
2492 | ||
5d50b364 SO |
2493 | INIT_LIST_HEAD(&dev->cmd_queue); |
2494 | ||
c46ee386 AAJ |
2495 | usb_set_intfdata(interface, dev); |
2496 | ||
9e2d493e | 2497 | dev->ops = &pn533_std_frame_ops; |
c46ee386 | 2498 | |
5c7b0531 SO |
2499 | dev->device_type = id->driver_info; |
2500 | switch (dev->device_type) { | |
2501 | case PN533_DEVICE_STD: | |
2502 | protocols = PN533_ALL_PROTOCOLS; | |
2503 | break; | |
2504 | ||
2505 | case PN533_DEVICE_PASORI: | |
2506 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2507 | break; | |
2508 | ||
2509 | default: | |
2510 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2511 | dev->device_type); | |
2512 | rc = -EINVAL; | |
2513 | goto destroy_wq; | |
2514 | } | |
c46ee386 | 2515 | |
9e2d493e WR |
2516 | memset(&fw_ver, 0, sizeof(fw_ver)); |
2517 | rc = pn533_get_firmware_version(dev, &fw_ver); | |
2518 | if (rc < 0) | |
2519 | goto destroy_wq; | |
2520 | ||
2521 | nfc_dev_info(&dev->interface->dev, | |
2522 | "NXP PN533 firmware ver %d.%d now attached", | |
2523 | fw_ver.ver, fw_ver.rev); | |
2524 | ||
2525 | ||
e8753043 | 2526 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
390a1bd8 | 2527 | NFC_SE_NONE, |
9e2d493e | 2528 | dev->ops->tx_header_len + |
e8753043 | 2529 | PN533_CMD_DATAEXCH_HEAD_LEN, |
9e2d493e | 2530 | dev->ops->tx_tail_len); |
c46ee386 | 2531 | if (!dev->nfc_dev) |
4849f85e | 2532 | goto destroy_wq; |
c46ee386 AAJ |
2533 | |
2534 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2535 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2536 | ||
2537 | rc = nfc_register_device(dev->nfc_dev); | |
2538 | if (rc) | |
2539 | goto free_nfc_dev; | |
2540 | ||
5c7b0531 SO |
2541 | rc = pn533_setup(dev); |
2542 | if (rc) | |
34a85bfc | 2543 | goto unregister_nfc_dev; |
34a85bfc | 2544 | |
c46ee386 AAJ |
2545 | return 0; |
2546 | ||
9f2f8ba1 SO |
2547 | unregister_nfc_dev: |
2548 | nfc_unregister_device(dev->nfc_dev); | |
2549 | ||
c46ee386 AAJ |
2550 | free_nfc_dev: |
2551 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2552 | |
4849f85e SO |
2553 | destroy_wq: |
2554 | destroy_workqueue(dev->wq); | |
c46ee386 | 2555 | error: |
c46ee386 | 2556 | usb_free_urb(dev->in_urb); |
c46ee386 AAJ |
2557 | usb_free_urb(dev->out_urb); |
2558 | kfree(dev); | |
2559 | return rc; | |
2560 | } | |
2561 | ||
2562 | static void pn533_disconnect(struct usb_interface *interface) | |
2563 | { | |
2564 | struct pn533 *dev; | |
5d50b364 | 2565 | struct pn533_cmd *cmd, *n; |
c46ee386 AAJ |
2566 | |
2567 | dev = usb_get_intfdata(interface); | |
2568 | usb_set_intfdata(interface, NULL); | |
2569 | ||
2570 | nfc_unregister_device(dev->nfc_dev); | |
2571 | nfc_free_device(dev->nfc_dev); | |
2572 | ||
2573 | usb_kill_urb(dev->in_urb); | |
2574 | usb_kill_urb(dev->out_urb); | |
2575 | ||
4849f85e | 2576 | destroy_workqueue(dev->wq); |
c46ee386 | 2577 | |
6ff73fd2 SO |
2578 | skb_queue_purge(&dev->resp_q); |
2579 | ||
6fbbdc16 SO |
2580 | del_timer(&dev->listen_timer); |
2581 | ||
5d50b364 SO |
2582 | list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { |
2583 | list_del(&cmd->queue); | |
2584 | kfree(cmd); | |
2585 | } | |
2586 | ||
c46ee386 | 2587 | usb_free_urb(dev->in_urb); |
c46ee386 AAJ |
2588 | usb_free_urb(dev->out_urb); |
2589 | kfree(dev); | |
2590 | ||
276556db | 2591 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2592 | } |
2593 | ||
2594 | static struct usb_driver pn533_driver = { | |
2595 | .name = "pn533", | |
2596 | .probe = pn533_probe, | |
2597 | .disconnect = pn533_disconnect, | |
2598 | .id_table = pn533_table, | |
2599 | }; | |
2600 | ||
fe748483 | 2601 | module_usb_driver(pn533_driver); |
c46ee386 | 2602 | |
e70b96e9 WR |
2603 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); |
2604 | MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2605 | MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>"); | |
c46ee386 AAJ |
2606 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); |
2607 | MODULE_VERSION(VERSION); | |
2608 | MODULE_LICENSE("GPL"); |