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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 | 29 | |
495af72e | 30 | #define VERSION "0.2" |
c46ee386 AAJ |
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 | ||
53cf4839 WR |
41 | #define ACS_VENDOR_ID 0x072f |
42 | #define ACR122U_PRODUCT_ID 0x2200 | |
43 | ||
44 | #define PN533_DEVICE_STD 0x1 | |
45 | #define PN533_DEVICE_PASORI 0x2 | |
46 | #define PN533_DEVICE_ACR122U 0x3 | |
5c7b0531 | 47 | |
01d719a2 SO |
48 | #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\ |
49 | NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\ | |
50 | NFC_PROTO_NFC_DEP_MASK |\ | |
51 | NFC_PROTO_ISO14443_B_MASK) | |
5c7b0531 SO |
52 | |
53 | #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ | |
54 | NFC_PROTO_MIFARE_MASK | \ | |
55 | NFC_PROTO_FELICA_MASK | \ | |
01d719a2 | 56 | NFC_PROTO_ISO14443_MASK | \ |
5c7b0531 SO |
57 | NFC_PROTO_NFC_DEP_MASK) |
58 | ||
c46ee386 | 59 | static const struct usb_device_id pn533_table[] = { |
5c7b0531 SO |
60 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
61 | .idVendor = PN533_VENDOR_ID, | |
62 | .idProduct = PN533_PRODUCT_ID, | |
63 | .driver_info = PN533_DEVICE_STD, | |
64 | }, | |
65 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
66 | .idVendor = SCM_VENDOR_ID, | |
67 | .idProduct = SCL3711_PRODUCT_ID, | |
68 | .driver_info = PN533_DEVICE_STD, | |
69 | }, | |
70 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
71 | .idVendor = SONY_VENDOR_ID, | |
72 | .idProduct = PASORI_PRODUCT_ID, | |
73 | .driver_info = PN533_DEVICE_PASORI, | |
74 | }, | |
53cf4839 WR |
75 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
76 | .idVendor = ACS_VENDOR_ID, | |
77 | .idProduct = ACR122U_PRODUCT_ID, | |
78 | .driver_info = PN533_DEVICE_ACR122U, | |
79 | }, | |
c46ee386 AAJ |
80 | { } |
81 | }; | |
82 | MODULE_DEVICE_TABLE(usb, pn533_table); | |
83 | ||
6fbbdc16 SO |
84 | /* How much time we spend listening for initiators */ |
85 | #define PN533_LISTEN_TIME 2 | |
86 | ||
63123108 WR |
87 | /* Standard pn533 frame definitions */ |
88 | #define PN533_STD_FRAME_HEADER_LEN (sizeof(struct pn533_std_frame) \ | |
b1bb290a | 89 | + 2) /* data[0] TFI, data[1] CC */ |
63123108 | 90 | #define PN533_STD_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ |
82dec34d | 91 | |
15461aeb WR |
92 | /* |
93 | * Max extended frame payload len, excluding TFI and CC | |
94 | * which are already in PN533_FRAME_HEADER_LEN. | |
95 | */ | |
63123108 | 96 | #define PN533_STD_FRAME_MAX_PAYLOAD_LEN 263 |
15461aeb | 97 | |
63123108 | 98 | #define PN533_STD_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2), |
5b5a4437 | 99 | Postamble (1) */ |
63123108 WR |
100 | #define PN533_STD_FRAME_CHECKSUM(f) (f->data[f->datalen]) |
101 | #define PN533_STD_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1]) | |
c46ee386 AAJ |
102 | |
103 | /* start of frame */ | |
63123108 | 104 | #define PN533_STD_FRAME_SOF 0x00FF |
c46ee386 | 105 | |
63123108 WR |
106 | /* standard frame identifier: in/out/error */ |
107 | #define PN533_STD_FRAME_IDENTIFIER(f) (f->data[0]) /* TFI */ | |
108 | #define PN533_STD_FRAME_DIR_OUT 0xD4 | |
109 | #define PN533_STD_FRAME_DIR_IN 0xD5 | |
c46ee386 | 110 | |
53cf4839 WR |
111 | /* ACS ACR122 pn533 frame definitions */ |
112 | #define PN533_ACR122_TX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_tx_frame) \ | |
113 | + 2) | |
114 | #define PN533_ACR122_TX_FRAME_TAIL_LEN 0 | |
115 | #define PN533_ACR122_RX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_rx_frame) \ | |
116 | + 2) | |
117 | #define PN533_ACR122_RX_FRAME_TAIL_LEN 2 | |
118 | #define PN533_ACR122_FRAME_MAX_PAYLOAD_LEN PN533_STD_FRAME_MAX_PAYLOAD_LEN | |
119 | ||
120 | /* CCID messages types */ | |
121 | #define PN533_ACR122_PC_TO_RDR_ICCPOWERON 0x62 | |
122 | #define PN533_ACR122_PC_TO_RDR_ESCAPE 0x6B | |
123 | ||
124 | #define PN533_ACR122_RDR_TO_PC_ESCAPE 0x83 | |
125 | ||
c46ee386 | 126 | /* PN533 Commands */ |
63123108 | 127 | #define PN533_STD_FRAME_CMD(f) (f->data[1]) |
c46ee386 AAJ |
128 | |
129 | #define PN533_CMD_GET_FIRMWARE_VERSION 0x02 | |
130 | #define PN533_CMD_RF_CONFIGURATION 0x32 | |
131 | #define PN533_CMD_IN_DATA_EXCHANGE 0x40 | |
5c7b0531 | 132 | #define PN533_CMD_IN_COMM_THRU 0x42 |
c46ee386 AAJ |
133 | #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A |
134 | #define PN533_CMD_IN_ATR 0x50 | |
135 | #define PN533_CMD_IN_RELEASE 0x52 | |
361f3cb7 | 136 | #define PN533_CMD_IN_JUMP_FOR_DEP 0x56 |
c46ee386 | 137 | |
ad3823ce | 138 | #define PN533_CMD_TG_INIT_AS_TARGET 0x8c |
103b34cf | 139 | #define PN533_CMD_TG_GET_DATA 0x86 |
dadb06f2 | 140 | #define PN533_CMD_TG_SET_DATA 0x8e |
aada17ac | 141 | #define PN533_CMD_UNDEF 0xff |
ad3823ce | 142 | |
c46ee386 AAJ |
143 | #define PN533_CMD_RESPONSE(cmd) (cmd + 1) |
144 | ||
145 | /* PN533 Return codes */ | |
146 | #define PN533_CMD_RET_MASK 0x3F | |
147 | #define PN533_CMD_MI_MASK 0x40 | |
148 | #define PN533_CMD_RET_SUCCESS 0x00 | |
149 | ||
150 | struct pn533; | |
151 | ||
aada17ac WR |
152 | typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg, |
153 | struct sk_buff *resp); | |
154 | ||
c46ee386 AAJ |
155 | /* structs for pn533 commands */ |
156 | ||
157 | /* PN533_CMD_GET_FIRMWARE_VERSION */ | |
158 | struct pn533_fw_version { | |
159 | u8 ic; | |
160 | u8 ver; | |
161 | u8 rev; | |
162 | u8 support; | |
163 | }; | |
164 | ||
165 | /* PN533_CMD_RF_CONFIGURATION */ | |
60d9edd5 SO |
166 | #define PN533_CFGITEM_RF_FIELD 0x01 |
167 | #define PN533_CFGITEM_TIMING 0x02 | |
c46ee386 | 168 | #define PN533_CFGITEM_MAX_RETRIES 0x05 |
60d9edd5 SO |
169 | #define PN533_CFGITEM_PASORI 0x82 |
170 | ||
171 | #define PN533_CFGITEM_RF_FIELD_ON 0x1 | |
172 | #define PN533_CFGITEM_RF_FIELD_OFF 0x0 | |
c46ee386 | 173 | |
34a85bfc SO |
174 | #define PN533_CONFIG_TIMING_102 0xb |
175 | #define PN533_CONFIG_TIMING_204 0xc | |
176 | #define PN533_CONFIG_TIMING_409 0xd | |
177 | #define PN533_CONFIG_TIMING_819 0xe | |
178 | ||
c46ee386 AAJ |
179 | #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 |
180 | #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF | |
181 | ||
182 | struct pn533_config_max_retries { | |
183 | u8 mx_rty_atr; | |
184 | u8 mx_rty_psl; | |
185 | u8 mx_rty_passive_act; | |
186 | } __packed; | |
187 | ||
34a85bfc SO |
188 | struct pn533_config_timing { |
189 | u8 rfu; | |
190 | u8 atr_res_timeout; | |
191 | u8 dep_timeout; | |
192 | } __packed; | |
193 | ||
c46ee386 AAJ |
194 | /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ |
195 | ||
196 | /* felica commands opcode */ | |
197 | #define PN533_FELICA_OPC_SENSF_REQ 0 | |
198 | #define PN533_FELICA_OPC_SENSF_RES 1 | |
199 | /* felica SENSF_REQ parameters */ | |
200 | #define PN533_FELICA_SENSF_SC_ALL 0xFFFF | |
201 | #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 | |
202 | #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 | |
203 | #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 | |
204 | ||
205 | /* type B initiator_data values */ | |
206 | #define PN533_TYPE_B_AFI_ALL_FAMILIES 0 | |
207 | #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 | |
208 | #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 | |
209 | ||
210 | union pn533_cmd_poll_initdata { | |
211 | struct { | |
212 | u8 afi; | |
213 | u8 polling_method; | |
214 | } __packed type_b; | |
215 | struct { | |
216 | u8 opcode; | |
217 | __be16 sc; | |
218 | u8 rc; | |
219 | u8 tsn; | |
220 | } __packed felica; | |
221 | }; | |
222 | ||
223 | /* Poll modulations */ | |
224 | enum { | |
225 | PN533_POLL_MOD_106KBPS_A, | |
226 | PN533_POLL_MOD_212KBPS_FELICA, | |
227 | PN533_POLL_MOD_424KBPS_FELICA, | |
228 | PN533_POLL_MOD_106KBPS_JEWEL, | |
229 | PN533_POLL_MOD_847KBPS_B, | |
6fbbdc16 | 230 | PN533_LISTEN_MOD, |
c46ee386 AAJ |
231 | |
232 | __PN533_POLL_MOD_AFTER_LAST, | |
233 | }; | |
234 | #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) | |
235 | ||
236 | struct pn533_poll_modulations { | |
237 | struct { | |
238 | u8 maxtg; | |
239 | u8 brty; | |
240 | union pn533_cmd_poll_initdata initiator_data; | |
241 | } __packed data; | |
242 | u8 len; | |
243 | }; | |
244 | ||
ef3d56e1 | 245 | static const struct pn533_poll_modulations poll_mod[] = { |
c46ee386 AAJ |
246 | [PN533_POLL_MOD_106KBPS_A] = { |
247 | .data = { | |
248 | .maxtg = 1, | |
249 | .brty = 0, | |
250 | }, | |
251 | .len = 2, | |
252 | }, | |
253 | [PN533_POLL_MOD_212KBPS_FELICA] = { | |
254 | .data = { | |
255 | .maxtg = 1, | |
256 | .brty = 1, | |
257 | .initiator_data.felica = { | |
258 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
259 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
a94e10f7 | 260 | .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE, |
31c44464 | 261 | .tsn = 0x03, |
c46ee386 AAJ |
262 | }, |
263 | }, | |
264 | .len = 7, | |
265 | }, | |
266 | [PN533_POLL_MOD_424KBPS_FELICA] = { | |
267 | .data = { | |
268 | .maxtg = 1, | |
269 | .brty = 2, | |
270 | .initiator_data.felica = { | |
271 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
272 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
a94e10f7 | 273 | .rc = PN533_FELICA_SENSF_RC_SYSTEM_CODE, |
31c44464 | 274 | .tsn = 0x03, |
c46ee386 AAJ |
275 | }, |
276 | }, | |
277 | .len = 7, | |
278 | }, | |
279 | [PN533_POLL_MOD_106KBPS_JEWEL] = { | |
280 | .data = { | |
281 | .maxtg = 1, | |
282 | .brty = 4, | |
283 | }, | |
284 | .len = 2, | |
285 | }, | |
286 | [PN533_POLL_MOD_847KBPS_B] = { | |
287 | .data = { | |
288 | .maxtg = 1, | |
289 | .brty = 8, | |
290 | .initiator_data.type_b = { | |
291 | .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, | |
292 | .polling_method = | |
293 | PN533_TYPE_B_POLL_METHOD_TIMESLOT, | |
294 | }, | |
295 | }, | |
296 | .len = 3, | |
297 | }, | |
6fbbdc16 SO |
298 | [PN533_LISTEN_MOD] = { |
299 | .len = 0, | |
300 | }, | |
c46ee386 AAJ |
301 | }; |
302 | ||
303 | /* PN533_CMD_IN_ATR */ | |
304 | ||
c46ee386 AAJ |
305 | struct pn533_cmd_activate_response { |
306 | u8 status; | |
307 | u8 nfcid3t[10]; | |
308 | u8 didt; | |
309 | u8 bst; | |
310 | u8 brt; | |
311 | u8 to; | |
312 | u8 ppt; | |
313 | /* optional */ | |
314 | u8 gt[]; | |
315 | } __packed; | |
316 | ||
361f3cb7 SO |
317 | struct pn533_cmd_jump_dep_response { |
318 | u8 status; | |
319 | u8 tg; | |
320 | u8 nfcid3t[10]; | |
321 | u8 didt; | |
322 | u8 bst; | |
323 | u8 brt; | |
324 | u8 to; | |
325 | u8 ppt; | |
326 | /* optional */ | |
327 | u8 gt[]; | |
328 | } __packed; | |
c46ee386 | 329 | |
ad3823ce SO |
330 | |
331 | /* PN533_TG_INIT_AS_TARGET */ | |
332 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
333 | #define PN533_INIT_TARGET_DEP 0x2 | |
334 | ||
fc40a8c1 SO |
335 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
336 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
337 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
338 | ||
58520373 WR |
339 | enum pn533_protocol_type { |
340 | PN533_PROTO_REQ_ACK_RESP = 0, | |
341 | PN533_PROTO_REQ_RESP | |
342 | }; | |
343 | ||
c46ee386 AAJ |
344 | struct pn533 { |
345 | struct usb_device *udev; | |
346 | struct usb_interface *interface; | |
347 | struct nfc_dev *nfc_dev; | |
d5590bba | 348 | u32 device_type; |
58520373 | 349 | enum pn533_protocol_type protocol_type; |
c46ee386 AAJ |
350 | |
351 | struct urb *out_urb; | |
c46ee386 | 352 | struct urb *in_urb; |
c46ee386 | 353 | |
6ff73fd2 SO |
354 | struct sk_buff_head resp_q; |
355 | ||
4849f85e SO |
356 | struct workqueue_struct *wq; |
357 | struct work_struct cmd_work; | |
5d50b364 | 358 | struct work_struct cmd_complete_work; |
6fbbdc16 | 359 | struct work_struct poll_work; |
6ff73fd2 | 360 | struct work_struct mi_work; |
103b34cf | 361 | struct work_struct tg_work; |
17e9d9d4 | 362 | struct work_struct rf_work; |
d5590bba WR |
363 | |
364 | struct list_head cmd_queue; | |
365 | struct pn533_cmd *cmd; | |
366 | u8 cmd_pending; | |
d5590bba | 367 | struct mutex cmd_lock; /* protects cmd queue */ |
c46ee386 | 368 | |
b1e666f5 | 369 | void *cmd_complete_mi_arg; |
c46ee386 AAJ |
370 | |
371 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
372 | u8 poll_mod_count; | |
373 | u8 poll_mod_curr; | |
374 | u32 poll_protocols; | |
6fbbdc16 | 375 | u32 listen_protocols; |
d5590bba WR |
376 | struct timer_list listen_timer; |
377 | int cancel_listen; | |
6fbbdc16 SO |
378 | |
379 | u8 *gb; | |
380 | size_t gb_len; | |
c46ee386 AAJ |
381 | |
382 | u8 tgt_available_prots; | |
383 | u8 tgt_active_prot; | |
51ad304c | 384 | u8 tgt_mode; |
5c7b0531 | 385 | |
9e2d493e | 386 | struct pn533_frame_ops *ops; |
5d50b364 SO |
387 | }; |
388 | ||
389 | struct pn533_cmd { | |
390 | struct list_head queue; | |
4b2a9532 | 391 | u8 code; |
f87bc9fb | 392 | int status; |
aada17ac WR |
393 | struct sk_buff *req; |
394 | struct sk_buff *resp; | |
9e2d493e | 395 | int resp_len; |
4231604b WR |
396 | pn533_send_async_complete_t complete_cb; |
397 | void *complete_cb_context; | |
c46ee386 AAJ |
398 | }; |
399 | ||
63123108 | 400 | struct pn533_std_frame { |
c46ee386 AAJ |
401 | u8 preamble; |
402 | __be16 start_frame; | |
403 | u8 datalen; | |
404 | u8 datalen_checksum; | |
405 | u8 data[]; | |
406 | } __packed; | |
407 | ||
9e2d493e WR |
408 | struct pn533_frame_ops { |
409 | void (*tx_frame_init)(void *frame, u8 cmd_code); | |
410 | void (*tx_frame_finish)(void *frame); | |
411 | void (*tx_update_payload_len)(void *frame, int len); | |
412 | int tx_header_len; | |
413 | int tx_tail_len; | |
414 | ||
415 | bool (*rx_is_frame_valid)(void *frame); | |
416 | int (*rx_frame_size)(void *frame); | |
417 | int rx_header_len; | |
418 | int rx_tail_len; | |
419 | ||
420 | int max_payload_len; | |
421 | u8 (*get_cmd_code)(void *frame); | |
422 | }; | |
423 | ||
53cf4839 WR |
424 | struct pn533_acr122_ccid_hdr { |
425 | u8 type; | |
426 | u32 datalen; | |
427 | u8 slot; | |
428 | u8 seq; | |
429 | u8 params[3]; /* 3 msg specific bytes or status, error and 1 specific | |
430 | byte for reposnse msg */ | |
431 | u8 data[]; /* payload */ | |
432 | } __packed; | |
433 | ||
434 | struct pn533_acr122_apdu_hdr { | |
435 | u8 class; | |
436 | u8 ins; | |
437 | u8 p1; | |
438 | u8 p2; | |
439 | } __packed; | |
440 | ||
441 | struct pn533_acr122_tx_frame { | |
442 | struct pn533_acr122_ccid_hdr ccid; | |
443 | struct pn533_acr122_apdu_hdr apdu; | |
444 | u8 datalen; | |
445 | u8 data[]; /* pn533 frame: TFI ... */ | |
446 | } __packed; | |
447 | ||
448 | struct pn533_acr122_rx_frame { | |
449 | struct pn533_acr122_ccid_hdr ccid; | |
450 | u8 data[]; /* pn533 frame : TFI ... */ | |
451 | } __packed; | |
452 | ||
453 | static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code) | |
454 | { | |
455 | struct pn533_acr122_tx_frame *frame = _frame; | |
456 | ||
457 | frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE; | |
458 | frame->ccid.datalen = sizeof(frame->apdu) + 1; /* sizeof(apdu_hdr) + | |
459 | sizeof(datalen) */ | |
460 | frame->ccid.slot = 0; | |
461 | frame->ccid.seq = 0; | |
462 | frame->ccid.params[0] = 0; | |
463 | frame->ccid.params[1] = 0; | |
464 | frame->ccid.params[2] = 0; | |
465 | ||
466 | frame->data[0] = PN533_STD_FRAME_DIR_OUT; | |
467 | frame->data[1] = cmd_code; | |
468 | frame->datalen = 2; /* data[0] + data[1] */ | |
469 | ||
470 | frame->apdu.class = 0xFF; | |
471 | frame->apdu.ins = 0; | |
472 | frame->apdu.p1 = 0; | |
473 | frame->apdu.p2 = 0; | |
474 | } | |
475 | ||
476 | static void pn533_acr122_tx_frame_finish(void *_frame) | |
477 | { | |
478 | struct pn533_acr122_tx_frame *frame = _frame; | |
479 | ||
480 | frame->ccid.datalen += frame->datalen; | |
481 | } | |
482 | ||
483 | static void pn533_acr122_tx_update_payload_len(void *_frame, int len) | |
484 | { | |
485 | struct pn533_acr122_tx_frame *frame = _frame; | |
486 | ||
487 | frame->datalen += len; | |
488 | } | |
489 | ||
490 | static bool pn533_acr122_is_rx_frame_valid(void *_frame) | |
491 | { | |
492 | struct pn533_acr122_rx_frame *frame = _frame; | |
493 | ||
494 | if (frame->ccid.type != 0x83) | |
495 | return false; | |
496 | ||
497 | if (frame->data[frame->ccid.datalen - 2] == 0x63) | |
498 | return false; | |
499 | ||
500 | return true; | |
501 | } | |
502 | ||
503 | static int pn533_acr122_rx_frame_size(void *frame) | |
504 | { | |
505 | struct pn533_acr122_rx_frame *f = frame; | |
506 | ||
507 | /* f->ccid.datalen already includes tail length */ | |
508 | return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen; | |
509 | } | |
510 | ||
511 | static u8 pn533_acr122_get_cmd_code(void *frame) | |
512 | { | |
513 | struct pn533_acr122_rx_frame *f = frame; | |
514 | ||
515 | return PN533_STD_FRAME_CMD(f); | |
516 | } | |
517 | ||
518 | static struct pn533_frame_ops pn533_acr122_frame_ops = { | |
519 | .tx_frame_init = pn533_acr122_tx_frame_init, | |
520 | .tx_frame_finish = pn533_acr122_tx_frame_finish, | |
521 | .tx_update_payload_len = pn533_acr122_tx_update_payload_len, | |
522 | .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN, | |
523 | .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN, | |
524 | ||
525 | .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid, | |
526 | .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN, | |
527 | .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN, | |
528 | .rx_frame_size = pn533_acr122_rx_frame_size, | |
529 | ||
530 | .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN, | |
531 | .get_cmd_code = pn533_acr122_get_cmd_code, | |
532 | }; | |
533 | ||
c46ee386 | 534 | /* The rule: value + checksum = 0 */ |
63123108 | 535 | static inline u8 pn533_std_checksum(u8 value) |
c46ee386 AAJ |
536 | { |
537 | return ~value + 1; | |
538 | } | |
539 | ||
540 | /* The rule: sum(data elements) + checksum = 0 */ | |
63123108 | 541 | static u8 pn533_std_data_checksum(u8 *data, int datalen) |
c46ee386 AAJ |
542 | { |
543 | u8 sum = 0; | |
544 | int i; | |
545 | ||
546 | for (i = 0; i < datalen; i++) | |
547 | sum += data[i]; | |
548 | ||
63123108 | 549 | return pn533_std_checksum(sum); |
c46ee386 AAJ |
550 | } |
551 | ||
63123108 | 552 | static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code) |
c46ee386 | 553 | { |
63123108 | 554 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 555 | |
c46ee386 | 556 | frame->preamble = 0; |
63123108 WR |
557 | frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF); |
558 | PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT; | |
559 | PN533_STD_FRAME_CMD(frame) = cmd_code; | |
c46ee386 AAJ |
560 | frame->datalen = 2; |
561 | } | |
562 | ||
63123108 | 563 | static void pn533_std_tx_frame_finish(void *_frame) |
c46ee386 | 564 | { |
63123108 | 565 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 566 | |
63123108 | 567 | frame->datalen_checksum = pn533_std_checksum(frame->datalen); |
c46ee386 | 568 | |
63123108 WR |
569 | PN533_STD_FRAME_CHECKSUM(frame) = |
570 | pn533_std_data_checksum(frame->data, frame->datalen); | |
c46ee386 | 571 | |
63123108 | 572 | PN533_STD_FRAME_POSTAMBLE(frame) = 0; |
c46ee386 AAJ |
573 | } |
574 | ||
63123108 | 575 | static void pn533_std_tx_update_payload_len(void *_frame, int len) |
9e2d493e | 576 | { |
63123108 | 577 | struct pn533_std_frame *frame = _frame; |
9e2d493e WR |
578 | |
579 | frame->datalen += len; | |
580 | } | |
581 | ||
63123108 | 582 | static bool pn533_std_rx_frame_is_valid(void *_frame) |
c46ee386 AAJ |
583 | { |
584 | u8 checksum; | |
63123108 | 585 | struct pn533_std_frame *frame = _frame; |
c46ee386 | 586 | |
63123108 | 587 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
588 | return false; |
589 | ||
63123108 | 590 | checksum = pn533_std_checksum(frame->datalen); |
c46ee386 AAJ |
591 | if (checksum != frame->datalen_checksum) |
592 | return false; | |
593 | ||
63123108 WR |
594 | checksum = pn533_std_data_checksum(frame->data, frame->datalen); |
595 | if (checksum != PN533_STD_FRAME_CHECKSUM(frame)) | |
c46ee386 AAJ |
596 | return false; |
597 | ||
598 | return true; | |
599 | } | |
600 | ||
63123108 | 601 | static bool pn533_std_rx_frame_is_ack(struct pn533_std_frame *frame) |
c46ee386 | 602 | { |
63123108 | 603 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
604 | return false; |
605 | ||
606 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
607 | return false; | |
608 | ||
609 | return true; | |
610 | } | |
611 | ||
63123108 | 612 | static inline int pn533_std_rx_frame_size(void *frame) |
9e2d493e | 613 | { |
63123108 | 614 | struct pn533_std_frame *f = frame; |
9e2d493e | 615 | |
63123108 WR |
616 | return sizeof(struct pn533_std_frame) + f->datalen + |
617 | PN533_STD_FRAME_TAIL_LEN; | |
9e2d493e WR |
618 | } |
619 | ||
63123108 | 620 | static u8 pn533_std_get_cmd_code(void *frame) |
9e2d493e | 621 | { |
63123108 | 622 | struct pn533_std_frame *f = frame; |
9e2d493e | 623 | |
63123108 | 624 | return PN533_STD_FRAME_CMD(f); |
9e2d493e WR |
625 | } |
626 | ||
ef3d56e1 | 627 | static struct pn533_frame_ops pn533_std_frame_ops = { |
63123108 WR |
628 | .tx_frame_init = pn533_std_tx_frame_init, |
629 | .tx_frame_finish = pn533_std_tx_frame_finish, | |
630 | .tx_update_payload_len = pn533_std_tx_update_payload_len, | |
631 | .tx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
632 | .tx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
633 | ||
634 | .rx_is_frame_valid = pn533_std_rx_frame_is_valid, | |
635 | .rx_frame_size = pn533_std_rx_frame_size, | |
636 | .rx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
637 | .rx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
638 | ||
639 | .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN, | |
640 | .get_cmd_code = pn533_std_get_cmd_code, | |
9e2d493e WR |
641 | }; |
642 | ||
643 | static bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame) | |
c46ee386 | 644 | { |
2c206fb7 | 645 | return (dev->ops->get_cmd_code(frame) == |
4b2a9532 | 646 | PN533_CMD_RESPONSE(dev->cmd->code)); |
c46ee386 AAJ |
647 | } |
648 | ||
c46ee386 AAJ |
649 | static void pn533_recv_response(struct urb *urb) |
650 | { | |
651 | struct pn533 *dev = urb->context; | |
f87bc9fb | 652 | struct pn533_cmd *cmd = dev->cmd; |
9e2d493e | 653 | u8 *in_frame; |
c46ee386 | 654 | |
f87bc9fb WR |
655 | cmd->status = urb->status; |
656 | ||
c46ee386 AAJ |
657 | switch (urb->status) { |
658 | case 0: | |
f8f99171 | 659 | break; /* success */ |
c46ee386 AAJ |
660 | case -ECONNRESET: |
661 | case -ENOENT: | |
6ca55372 | 662 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
663 | "The urb has been canceled (status %d)", |
664 | urb->status); | |
4849f85e | 665 | goto sched_wq; |
f8f99171 | 666 | case -ESHUTDOWN: |
c46ee386 | 667 | default: |
6ca55372 | 668 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 669 | "Urb failure (status %d)", urb->status); |
4849f85e | 670 | goto sched_wq; |
c46ee386 AAJ |
671 | } |
672 | ||
673 | in_frame = dev->in_urb->transfer_buffer; | |
674 | ||
fcfafc76 | 675 | nfc_dev_dbg(&dev->interface->dev, "Received a frame."); |
e279f84f SO |
676 | print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, |
677 | dev->ops->rx_frame_size(in_frame), false); | |
99e591be | 678 | |
9e2d493e | 679 | if (!dev->ops->rx_is_frame_valid(in_frame)) { |
c46ee386 | 680 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); |
f87bc9fb | 681 | cmd->status = -EIO; |
4849f85e | 682 | goto sched_wq; |
c46ee386 AAJ |
683 | } |
684 | ||
9e2d493e | 685 | if (!pn533_rx_frame_is_cmd_response(dev, in_frame)) { |
6ca55372 WR |
686 | nfc_dev_err(&dev->interface->dev, |
687 | "It it not the response to the last command"); | |
f87bc9fb | 688 | cmd->status = -EIO; |
4849f85e | 689 | goto sched_wq; |
c46ee386 AAJ |
690 | } |
691 | ||
4849f85e | 692 | sched_wq: |
5d50b364 | 693 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
694 | } |
695 | ||
696 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
697 | { | |
698 | dev->in_urb->complete = pn533_recv_response; | |
699 | ||
700 | return usb_submit_urb(dev->in_urb, flags); | |
701 | } | |
702 | ||
703 | static void pn533_recv_ack(struct urb *urb) | |
704 | { | |
705 | struct pn533 *dev = urb->context; | |
f87bc9fb | 706 | struct pn533_cmd *cmd = dev->cmd; |
63123108 | 707 | struct pn533_std_frame *in_frame; |
c46ee386 AAJ |
708 | int rc; |
709 | ||
f87bc9fb WR |
710 | cmd->status = urb->status; |
711 | ||
c46ee386 AAJ |
712 | switch (urb->status) { |
713 | case 0: | |
f8f99171 | 714 | break; /* success */ |
c46ee386 AAJ |
715 | case -ECONNRESET: |
716 | case -ENOENT: | |
6ca55372 | 717 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
718 | "The urb has been stopped (status %d)", |
719 | urb->status); | |
4849f85e | 720 | goto sched_wq; |
f8f99171 | 721 | case -ESHUTDOWN: |
c46ee386 | 722 | default: |
6ca55372 | 723 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 724 | "Urb failure (status %d)", urb->status); |
4849f85e | 725 | goto sched_wq; |
c46ee386 AAJ |
726 | } |
727 | ||
728 | in_frame = dev->in_urb->transfer_buffer; | |
729 | ||
63123108 | 730 | if (!pn533_std_rx_frame_is_ack(in_frame)) { |
c46ee386 | 731 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); |
f87bc9fb | 732 | cmd->status = -EIO; |
4849f85e | 733 | goto sched_wq; |
c46ee386 AAJ |
734 | } |
735 | ||
c46ee386 AAJ |
736 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); |
737 | if (rc) { | |
6ca55372 WR |
738 | nfc_dev_err(&dev->interface->dev, |
739 | "usb_submit_urb failed with result %d", rc); | |
f87bc9fb | 740 | cmd->status = rc; |
4849f85e | 741 | goto sched_wq; |
c46ee386 AAJ |
742 | } |
743 | ||
744 | return; | |
745 | ||
4849f85e | 746 | sched_wq: |
5d50b364 | 747 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
748 | } |
749 | ||
750 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
751 | { | |
752 | dev->in_urb->complete = pn533_recv_ack; | |
753 | ||
754 | return usb_submit_urb(dev->in_urb, flags); | |
755 | } | |
756 | ||
757 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
758 | { | |
63123108 | 759 | u8 ack[PN533_STD_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00}; |
5b5a4437 | 760 | /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */ |
c46ee386 AAJ |
761 | int rc; |
762 | ||
763 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
764 | ||
5b5a4437 WR |
765 | dev->out_urb->transfer_buffer = ack; |
766 | dev->out_urb->transfer_buffer_length = sizeof(ack); | |
c46ee386 AAJ |
767 | rc = usb_submit_urb(dev->out_urb, flags); |
768 | ||
769 | return rc; | |
770 | } | |
771 | ||
e8f40531 WR |
772 | static int __pn533_send_frame_async(struct pn533 *dev, |
773 | struct sk_buff *out, | |
774 | struct sk_buff *in, | |
ddf19d20 | 775 | int in_len) |
c46ee386 AAJ |
776 | { |
777 | int rc; | |
778 | ||
e8f40531 WR |
779 | dev->out_urb->transfer_buffer = out->data; |
780 | dev->out_urb->transfer_buffer_length = out->len; | |
c46ee386 | 781 | |
e8f40531 WR |
782 | dev->in_urb->transfer_buffer = in->data; |
783 | dev->in_urb->transfer_buffer_length = in_len; | |
c46ee386 | 784 | |
e279f84f SO |
785 | print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1, |
786 | out->data, out->len, false); | |
99e591be | 787 | |
d94ea4f5 | 788 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); |
c46ee386 AAJ |
789 | if (rc) |
790 | return rc; | |
791 | ||
58520373 WR |
792 | if (dev->protocol_type == PN533_PROTO_REQ_RESP) { |
793 | /* request for response for sent packet directly */ | |
794 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); | |
795 | if (rc) | |
796 | goto error; | |
797 | } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) { | |
798 | /* request for ACK if that's the case */ | |
799 | rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL); | |
800 | if (rc) | |
801 | goto error; | |
802 | } | |
c46ee386 AAJ |
803 | |
804 | return 0; | |
805 | ||
806 | error: | |
807 | usb_unlink_urb(dev->out_urb); | |
808 | return rc; | |
809 | } | |
810 | ||
9e2d493e WR |
811 | static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code, |
812 | struct sk_buff *skb) | |
aada17ac | 813 | { |
aada17ac WR |
814 | /* payload is already there, just update datalen */ |
815 | int payload_len = skb->len; | |
9e2d493e | 816 | struct pn533_frame_ops *ops = dev->ops; |
aada17ac | 817 | |
aada17ac | 818 | |
9e2d493e WR |
819 | skb_push(skb, ops->tx_header_len); |
820 | skb_put(skb, ops->tx_tail_len); | |
aada17ac | 821 | |
9e2d493e WR |
822 | ops->tx_frame_init(skb->data, cmd_code); |
823 | ops->tx_update_payload_len(skb->data, payload_len); | |
824 | ops->tx_frame_finish(skb->data); | |
aada17ac WR |
825 | } |
826 | ||
ddf19d20 | 827 | static int pn533_send_async_complete(struct pn533 *dev) |
aada17ac | 828 | { |
ddf19d20 | 829 | struct pn533_cmd *cmd = dev->cmd; |
f87bc9fb | 830 | int status = cmd->status; |
aada17ac | 831 | |
4231604b WR |
832 | struct sk_buff *req = cmd->req; |
833 | struct sk_buff *resp = cmd->resp; | |
aada17ac | 834 | |
aada17ac WR |
835 | int rc; |
836 | ||
837 | dev_kfree_skb(req); | |
838 | ||
0c33d262 | 839 | if (status < 0) { |
4231604b WR |
840 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, |
841 | ERR_PTR(status)); | |
aada17ac | 842 | dev_kfree_skb(resp); |
2c206fb7 | 843 | goto done; |
aada17ac WR |
844 | } |
845 | ||
9e2d493e WR |
846 | skb_put(resp, dev->ops->rx_frame_size(resp->data)); |
847 | skb_pull(resp, dev->ops->rx_header_len); | |
848 | skb_trim(resp, resp->len - dev->ops->rx_tail_len); | |
aada17ac | 849 | |
4231604b | 850 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp); |
aada17ac | 851 | |
2c206fb7 | 852 | done: |
4231604b | 853 | kfree(cmd); |
2c206fb7 | 854 | dev->cmd = NULL; |
aada17ac WR |
855 | return rc; |
856 | } | |
857 | ||
858 | static int __pn533_send_async(struct pn533 *dev, u8 cmd_code, | |
859 | struct sk_buff *req, struct sk_buff *resp, | |
860 | int resp_len, | |
861 | pn533_send_async_complete_t complete_cb, | |
862 | void *complete_cb_context) | |
863 | { | |
864 | struct pn533_cmd *cmd; | |
aada17ac WR |
865 | int rc = 0; |
866 | ||
fcfafc76 | 867 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code); |
aada17ac | 868 | |
4231604b WR |
869 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
870 | if (!cmd) | |
aada17ac WR |
871 | return -ENOMEM; |
872 | ||
4b2a9532 | 873 | cmd->code = cmd_code; |
4231604b WR |
874 | cmd->req = req; |
875 | cmd->resp = resp; | |
876 | cmd->resp_len = resp_len; | |
877 | cmd->complete_cb = complete_cb; | |
878 | cmd->complete_cb_context = complete_cb_context; | |
aada17ac | 879 | |
9e2d493e | 880 | pn533_build_cmd_frame(dev, cmd_code, req); |
aada17ac WR |
881 | |
882 | mutex_lock(&dev->cmd_lock); | |
883 | ||
884 | if (!dev->cmd_pending) { | |
ddf19d20 | 885 | rc = __pn533_send_frame_async(dev, req, resp, resp_len); |
aada17ac WR |
886 | if (rc) |
887 | goto error; | |
888 | ||
889 | dev->cmd_pending = 1; | |
2c206fb7 | 890 | dev->cmd = cmd; |
aada17ac WR |
891 | goto unlock; |
892 | } | |
893 | ||
fcfafc76 WR |
894 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__, |
895 | cmd_code); | |
aada17ac | 896 | |
aada17ac | 897 | INIT_LIST_HEAD(&cmd->queue); |
aada17ac WR |
898 | list_add_tail(&cmd->queue, &dev->cmd_queue); |
899 | ||
900 | goto unlock; | |
901 | ||
902 | error: | |
4231604b | 903 | kfree(cmd); |
aada17ac WR |
904 | unlock: |
905 | mutex_unlock(&dev->cmd_lock); | |
906 | return rc; | |
15461aeb WR |
907 | } |
908 | ||
909 | static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code, | |
910 | struct sk_buff *req, | |
911 | pn533_send_async_complete_t complete_cb, | |
912 | void *complete_cb_context) | |
913 | { | |
914 | struct sk_buff *resp; | |
915 | int rc; | |
9e2d493e WR |
916 | int resp_len = dev->ops->rx_header_len + |
917 | dev->ops->max_payload_len + | |
918 | dev->ops->rx_tail_len; | |
15461aeb | 919 | |
15461aeb WR |
920 | resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL); |
921 | if (!resp) | |
922 | return -ENOMEM; | |
923 | ||
924 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, | |
925 | complete_cb_context); | |
926 | if (rc) | |
927 | dev_kfree_skb(resp); | |
928 | ||
929 | return rc; | |
aada17ac WR |
930 | } |
931 | ||
932 | static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code, | |
933 | struct sk_buff *req, | |
934 | pn533_send_async_complete_t complete_cb, | |
935 | void *complete_cb_context) | |
936 | { | |
937 | struct sk_buff *resp; | |
938 | int rc; | |
9e2d493e WR |
939 | int resp_len = dev->ops->rx_header_len + |
940 | dev->ops->max_payload_len + | |
941 | dev->ops->rx_tail_len; | |
aada17ac | 942 | |
9e2d493e | 943 | resp = alloc_skb(resp_len, GFP_KERNEL); |
aada17ac WR |
944 | if (!resp) |
945 | return -ENOMEM; | |
946 | ||
9e2d493e WR |
947 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, |
948 | complete_cb_context); | |
aada17ac WR |
949 | if (rc) |
950 | dev_kfree_skb(resp); | |
951 | ||
952 | return rc; | |
953 | } | |
954 | ||
b1e666f5 WR |
955 | /* |
956 | * pn533_send_cmd_direct_async | |
957 | * | |
958 | * The function sends a piority cmd directly to the chip omiting the cmd | |
959 | * queue. It's intended to be used by chaining mechanism of received responses | |
960 | * where the host has to request every single chunk of data before scheduling | |
961 | * next cmd from the queue. | |
962 | */ | |
963 | static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code, | |
964 | struct sk_buff *req, | |
965 | pn533_send_async_complete_t complete_cb, | |
966 | void *complete_cb_context) | |
967 | { | |
b1e666f5 | 968 | struct sk_buff *resp; |
4231604b | 969 | struct pn533_cmd *cmd; |
b1e666f5 | 970 | int rc; |
9e2d493e WR |
971 | int resp_len = dev->ops->rx_header_len + |
972 | dev->ops->max_payload_len + | |
973 | dev->ops->rx_tail_len; | |
b1e666f5 | 974 | |
b1e666f5 WR |
975 | resp = alloc_skb(resp_len, GFP_KERNEL); |
976 | if (!resp) | |
977 | return -ENOMEM; | |
978 | ||
4231604b WR |
979 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
980 | if (!cmd) { | |
b1e666f5 WR |
981 | dev_kfree_skb(resp); |
982 | return -ENOMEM; | |
983 | } | |
984 | ||
4b2a9532 | 985 | cmd->code = cmd_code; |
4231604b WR |
986 | cmd->req = req; |
987 | cmd->resp = resp; | |
988 | cmd->resp_len = resp_len; | |
989 | cmd->complete_cb = complete_cb; | |
990 | cmd->complete_cb_context = complete_cb_context; | |
b1e666f5 | 991 | |
9e2d493e | 992 | pn533_build_cmd_frame(dev, cmd_code, req); |
b1e666f5 | 993 | |
ddf19d20 | 994 | rc = __pn533_send_frame_async(dev, req, resp, resp_len); |
b1e666f5 WR |
995 | if (rc < 0) { |
996 | dev_kfree_skb(resp); | |
4231604b | 997 | kfree(cmd); |
2c206fb7 WR |
998 | } else { |
999 | dev->cmd = cmd; | |
b1e666f5 WR |
1000 | } |
1001 | ||
1002 | return rc; | |
1003 | } | |
1004 | ||
c79490e1 WR |
1005 | static void pn533_wq_cmd_complete(struct work_struct *work) |
1006 | { | |
1007 | struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); | |
1008 | int rc; | |
1009 | ||
1010 | rc = pn533_send_async_complete(dev); | |
1011 | if (rc != -EINPROGRESS) | |
1012 | queue_work(dev->wq, &dev->cmd_work); | |
1013 | } | |
1014 | ||
5d50b364 SO |
1015 | static void pn533_wq_cmd(struct work_struct *work) |
1016 | { | |
1017 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); | |
1018 | struct pn533_cmd *cmd; | |
0ce1fbdd | 1019 | int rc; |
5d50b364 SO |
1020 | |
1021 | mutex_lock(&dev->cmd_lock); | |
1022 | ||
1023 | if (list_empty(&dev->cmd_queue)) { | |
1024 | dev->cmd_pending = 0; | |
1025 | mutex_unlock(&dev->cmd_lock); | |
1026 | return; | |
1027 | } | |
1028 | ||
1029 | cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); | |
1030 | ||
60ad07ab SJ |
1031 | list_del(&cmd->queue); |
1032 | ||
5d50b364 SO |
1033 | mutex_unlock(&dev->cmd_lock); |
1034 | ||
ddf19d20 | 1035 | rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len); |
0ce1fbdd WR |
1036 | if (rc < 0) { |
1037 | dev_kfree_skb(cmd->req); | |
1038 | dev_kfree_skb(cmd->resp); | |
4231604b | 1039 | kfree(cmd); |
2c206fb7 | 1040 | return; |
0ce1fbdd | 1041 | } |
2c206fb7 WR |
1042 | |
1043 | dev->cmd = cmd; | |
5d50b364 SO |
1044 | } |
1045 | ||
c46ee386 | 1046 | struct pn533_sync_cmd_response { |
94c5c156 | 1047 | struct sk_buff *resp; |
c46ee386 AAJ |
1048 | struct completion done; |
1049 | }; | |
1050 | ||
94c5c156 WR |
1051 | static int pn533_send_sync_complete(struct pn533 *dev, void *_arg, |
1052 | struct sk_buff *resp) | |
1053 | { | |
1054 | struct pn533_sync_cmd_response *arg = _arg; | |
1055 | ||
94c5c156 WR |
1056 | arg->resp = resp; |
1057 | complete(&arg->done); | |
1058 | ||
1059 | return 0; | |
1060 | } | |
1061 | ||
1062 | /* pn533_send_cmd_sync | |
1063 | * | |
1064 | * Please note the req parameter is freed inside the function to | |
1065 | * limit a number of return value interpretations by the caller. | |
1066 | * | |
1067 | * 1. negative in case of error during TX path -> req should be freed | |
1068 | * | |
1069 | * 2. negative in case of error during RX path -> req should not be freed | |
1070 | * as it's been already freed at the begining of RX path by | |
1071 | * async_complete_cb. | |
1072 | * | |
1073 | * 3. valid pointer in case of succesfult RX path | |
1074 | * | |
1075 | * A caller has to check a return value with IS_ERR macro. If the test pass, | |
1076 | * the returned pointer is valid. | |
1077 | * | |
1078 | * */ | |
1079 | static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code, | |
1080 | struct sk_buff *req) | |
1081 | { | |
1082 | int rc; | |
1083 | struct pn533_sync_cmd_response arg; | |
1084 | ||
94c5c156 WR |
1085 | init_completion(&arg.done); |
1086 | ||
1087 | rc = pn533_send_cmd_async(dev, cmd_code, req, | |
1088 | pn533_send_sync_complete, &arg); | |
1089 | if (rc) { | |
1090 | dev_kfree_skb(req); | |
1091 | return ERR_PTR(rc); | |
1092 | } | |
1093 | ||
1094 | wait_for_completion(&arg.done); | |
1095 | ||
1096 | return arg.resp; | |
1097 | } | |
1098 | ||
c46ee386 AAJ |
1099 | static void pn533_send_complete(struct urb *urb) |
1100 | { | |
1101 | struct pn533 *dev = urb->context; | |
1102 | ||
c46ee386 AAJ |
1103 | switch (urb->status) { |
1104 | case 0: | |
f8f99171 | 1105 | break; /* success */ |
c46ee386 AAJ |
1106 | case -ECONNRESET: |
1107 | case -ENOENT: | |
6ca55372 | 1108 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
1109 | "The urb has been stopped (status %d)", |
1110 | urb->status); | |
c46ee386 | 1111 | break; |
f8f99171 | 1112 | case -ESHUTDOWN: |
c46ee386 | 1113 | default: |
f8f99171 WR |
1114 | nfc_dev_err(&dev->interface->dev, |
1115 | "Urb failure (status %d)", urb->status); | |
c46ee386 AAJ |
1116 | } |
1117 | } | |
1118 | ||
10cff29a WR |
1119 | static void pn533_abort_cmd(struct pn533 *dev, gfp_t flags) |
1120 | { | |
1121 | /* ACR122U does not support any command which aborts last | |
1122 | * issued command i.e. as ACK for standard PN533. Additionally, | |
1123 | * it behaves stange, sending broken or incorrect responses, | |
1124 | * when we cancel urb before the chip will send response. | |
1125 | */ | |
1126 | if (dev->device_type == PN533_DEVICE_ACR122U) | |
1127 | return; | |
1128 | ||
1129 | /* An ack will cancel the last issued command */ | |
1130 | pn533_send_ack(dev, flags); | |
1131 | ||
1132 | /* cancel the urb request */ | |
1133 | usb_kill_urb(dev->in_urb); | |
1134 | } | |
1135 | ||
9e2d493e | 1136 | static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size) |
d22b2db6 WR |
1137 | { |
1138 | struct sk_buff *skb; | |
1139 | ||
9e2d493e | 1140 | skb = alloc_skb(dev->ops->tx_header_len + |
d22b2db6 | 1141 | size + |
9e2d493e | 1142 | dev->ops->tx_tail_len, GFP_KERNEL); |
d22b2db6 WR |
1143 | |
1144 | if (skb) | |
9e2d493e | 1145 | skb_reserve(skb, dev->ops->tx_header_len); |
d22b2db6 WR |
1146 | |
1147 | return skb; | |
1148 | } | |
1149 | ||
c46ee386 AAJ |
1150 | struct pn533_target_type_a { |
1151 | __be16 sens_res; | |
1152 | u8 sel_res; | |
1153 | u8 nfcid_len; | |
1154 | u8 nfcid_data[]; | |
1155 | } __packed; | |
1156 | ||
1157 | ||
1158 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
1159 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
1160 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
1161 | ||
1162 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
1163 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
1164 | ||
1165 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
1166 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
1167 | ||
1168 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
1169 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
1170 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
1171 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
1172 | ||
1173 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
1174 | int target_data_len) | |
1175 | { | |
1176 | u8 ssd; | |
1177 | u8 platconf; | |
1178 | ||
1179 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
1180 | return false; | |
1181 | ||
1182 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
1183 | the values are not being used */ | |
1184 | ||
1185 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1186 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
1187 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
1188 | ||
1189 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1190 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1191 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1192 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1193 | return false; |
1194 | ||
1195 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
1196 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
1197 | return false; | |
1198 | ||
1199 | return true; | |
1200 | } | |
1201 | ||
1202 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1203 | int tgt_data_len) | |
1204 | { | |
1205 | struct pn533_target_type_a *tgt_type_a; | |
1206 | ||
37cf4fc6 | 1207 | tgt_type_a = (struct pn533_target_type_a *)tgt_data; |
c46ee386 AAJ |
1208 | |
1209 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
1210 | return -EPROTO; | |
1211 | ||
1212 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
1213 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
1214 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
1215 | break; | |
1216 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
1217 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
1218 | break; | |
1219 | case PN533_TYPE_A_SEL_PROT_DEP: | |
1220 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
1221 | break; | |
1222 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
1223 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
1224 | NFC_PROTO_NFC_DEP_MASK; | |
1225 | break; | |
1226 | } | |
1227 | ||
1228 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
1229 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
1230 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
1231 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1232 | |
1233 | return 0; | |
1234 | } | |
1235 | ||
1236 | struct pn533_target_felica { | |
1237 | u8 pol_res; | |
1238 | u8 opcode; | |
322bce95 | 1239 | u8 nfcid2[NFC_NFCID2_MAXSIZE]; |
c46ee386 AAJ |
1240 | u8 pad[8]; |
1241 | /* optional */ | |
1242 | u8 syst_code[]; | |
1243 | } __packed; | |
1244 | ||
1245 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
1246 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
1247 | ||
1248 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
1249 | int target_data_len) | |
1250 | { | |
1251 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
1252 | return false; | |
1253 | ||
1254 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
1255 | return false; | |
1256 | ||
1257 | return true; | |
1258 | } | |
1259 | ||
1260 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1261 | int tgt_data_len) | |
1262 | { | |
1263 | struct pn533_target_felica *tgt_felica; | |
1264 | ||
37cf4fc6 | 1265 | tgt_felica = (struct pn533_target_felica *)tgt_data; |
c46ee386 AAJ |
1266 | |
1267 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
1268 | return -EPROTO; | |
1269 | ||
5d467742 WR |
1270 | if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) && |
1271 | (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2)) | |
c46ee386 AAJ |
1272 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; |
1273 | else | |
1274 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
1275 | ||
7975754f SO |
1276 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
1277 | nfc_tgt->sensf_res_len = 9; | |
1278 | ||
322bce95 SO |
1279 | memcpy(nfc_tgt->nfcid2, tgt_felica->nfcid2, NFC_NFCID2_MAXSIZE); |
1280 | nfc_tgt->nfcid2_len = NFC_NFCID2_MAXSIZE; | |
1281 | ||
c46ee386 AAJ |
1282 | return 0; |
1283 | } | |
1284 | ||
1285 | struct pn533_target_jewel { | |
1286 | __be16 sens_res; | |
1287 | u8 jewelid[4]; | |
1288 | } __packed; | |
1289 | ||
1290 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
1291 | int target_data_len) | |
1292 | { | |
1293 | u8 ssd; | |
1294 | u8 platconf; | |
1295 | ||
1296 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
1297 | return false; | |
1298 | ||
1299 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1300 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
1301 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
1302 | ||
1303 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1304 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1305 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1306 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1307 | return false; |
1308 | ||
1309 | return true; | |
1310 | } | |
1311 | ||
1312 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1313 | int tgt_data_len) | |
1314 | { | |
1315 | struct pn533_target_jewel *tgt_jewel; | |
1316 | ||
37cf4fc6 | 1317 | tgt_jewel = (struct pn533_target_jewel *)tgt_data; |
c46ee386 AAJ |
1318 | |
1319 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
1320 | return -EPROTO; | |
1321 | ||
1322 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
1323 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
1324 | nfc_tgt->nfcid1_len = 4; |
1325 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1326 | |
1327 | return 0; | |
1328 | } | |
1329 | ||
1330 | struct pn533_type_b_prot_info { | |
1331 | u8 bitrate; | |
1332 | u8 fsci_type; | |
1333 | u8 fwi_adc_fo; | |
1334 | } __packed; | |
1335 | ||
1336 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
1337 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
1338 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
1339 | ||
1340 | struct pn533_type_b_sens_res { | |
1341 | u8 opcode; | |
1342 | u8 nfcid[4]; | |
1343 | u8 appdata[4]; | |
1344 | struct pn533_type_b_prot_info prot_info; | |
1345 | } __packed; | |
1346 | ||
1347 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
1348 | ||
1349 | struct pn533_target_type_b { | |
1350 | struct pn533_type_b_sens_res sensb_res; | |
1351 | u8 attrib_res_len; | |
1352 | u8 attrib_res[]; | |
1353 | } __packed; | |
1354 | ||
1355 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
1356 | int target_data_len) | |
1357 | { | |
1358 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
1359 | return false; | |
1360 | ||
1361 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
1362 | return false; | |
1363 | ||
1364 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
1365 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
1366 | return false; | |
1367 | ||
1368 | return true; | |
1369 | } | |
1370 | ||
1371 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1372 | int tgt_data_len) | |
1373 | { | |
1374 | struct pn533_target_type_b *tgt_type_b; | |
1375 | ||
37cf4fc6 | 1376 | tgt_type_b = (struct pn533_target_type_b *)tgt_data; |
c46ee386 AAJ |
1377 | |
1378 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
1379 | return -EPROTO; | |
1380 | ||
01d719a2 | 1381 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
1382 | |
1383 | return 0; | |
1384 | } | |
1385 | ||
b5193e5d WR |
1386 | static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata, |
1387 | int tgdata_len) | |
c46ee386 | 1388 | { |
c46ee386 AAJ |
1389 | struct nfc_target nfc_tgt; |
1390 | int rc; | |
1391 | ||
1392 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
b5193e5d | 1393 | dev->poll_mod_curr); |
c46ee386 | 1394 | |
b5193e5d | 1395 | if (tg != 1) |
c46ee386 AAJ |
1396 | return -EPROTO; |
1397 | ||
98b3ac1b SO |
1398 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1399 | ||
c46ee386 AAJ |
1400 | switch (dev->poll_mod_curr) { |
1401 | case PN533_POLL_MOD_106KBPS_A: | |
b5193e5d | 1402 | rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1403 | break; |
1404 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1405 | case PN533_POLL_MOD_424KBPS_FELICA: | |
b5193e5d | 1406 | rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1407 | break; |
1408 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
b5193e5d | 1409 | rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1410 | break; |
1411 | case PN533_POLL_MOD_847KBPS_B: | |
b5193e5d | 1412 | rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1413 | break; |
1414 | default: | |
b5193e5d WR |
1415 | nfc_dev_err(&dev->interface->dev, |
1416 | "Unknown current poll modulation"); | |
c46ee386 AAJ |
1417 | return -EPROTO; |
1418 | } | |
1419 | ||
1420 | if (rc) | |
1421 | return rc; | |
1422 | ||
1423 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
b5193e5d WR |
1424 | nfc_dev_dbg(&dev->interface->dev, |
1425 | "The Tg found doesn't have the desired protocol"); | |
c46ee386 AAJ |
1426 | return -EAGAIN; |
1427 | } | |
1428 | ||
b5193e5d WR |
1429 | nfc_dev_dbg(&dev->interface->dev, |
1430 | "Target found - supported protocols: 0x%x", | |
1431 | nfc_tgt.supported_protocols); | |
c46ee386 AAJ |
1432 | |
1433 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1434 | ||
1435 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1436 | ||
1437 | return 0; | |
1438 | } | |
1439 | ||
6fbbdc16 SO |
1440 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1441 | { | |
1442 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1443 | } | |
1444 | ||
c46ee386 AAJ |
1445 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1446 | { | |
1447 | dev->poll_mod_count = 0; | |
1448 | } | |
1449 | ||
1450 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1451 | { | |
1452 | dev->poll_mod_active[dev->poll_mod_count] = | |
37cf4fc6 | 1453 | (struct pn533_poll_modulations *)&poll_mod[mod_index]; |
c46ee386 AAJ |
1454 | dev->poll_mod_count++; |
1455 | } | |
1456 | ||
6fbbdc16 SO |
1457 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1458 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1459 | { |
1460 | pn533_poll_reset_mod_list(dev); | |
1461 | ||
b08e8603 WR |
1462 | if ((im_protocols & NFC_PROTO_MIFARE_MASK) || |
1463 | (im_protocols & NFC_PROTO_ISO14443_MASK) || | |
1464 | (im_protocols & NFC_PROTO_NFC_DEP_MASK)) | |
c46ee386 AAJ |
1465 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1466 | ||
b08e8603 WR |
1467 | if (im_protocols & NFC_PROTO_FELICA_MASK || |
1468 | im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1469 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1470 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1471 | } | |
1472 | ||
6fbbdc16 | 1473 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1474 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1475 | ||
01d719a2 | 1476 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1477 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1478 | |
6fbbdc16 SO |
1479 | if (tm_protocols) |
1480 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1481 | } |
1482 | ||
b5193e5d | 1483 | static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp) |
c46ee386 | 1484 | { |
b5193e5d WR |
1485 | u8 nbtg, tg, *tgdata; |
1486 | int rc, tgdata_len; | |
c46ee386 AAJ |
1487 | |
1488 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1489 | ||
b5193e5d WR |
1490 | nbtg = resp->data[0]; |
1491 | tg = resp->data[1]; | |
1492 | tgdata = &resp->data[2]; | |
1493 | tgdata_len = resp->len - 2; /* nbtg + tg */ | |
1494 | ||
1495 | if (nbtg) { | |
1496 | rc = pn533_target_found(dev, tg, tgdata, tgdata_len); | |
c46ee386 AAJ |
1497 | |
1498 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1499 | if (rc == 0) { |
1500 | pn533_poll_reset_mod_list(dev); | |
1501 | return 0; | |
1502 | } | |
c46ee386 AAJ |
1503 | } |
1504 | ||
6fbbdc16 | 1505 | return -EAGAIN; |
c46ee386 AAJ |
1506 | } |
1507 | ||
9e2d493e | 1508 | static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev) |
ad3823ce | 1509 | { |
b5193e5d WR |
1510 | struct sk_buff *skb; |
1511 | u8 *felica, *nfcid3, *gb; | |
1512 | ||
9e2d493e WR |
1513 | u8 *gbytes = dev->gb; |
1514 | size_t gbytes_len = dev->gb_len; | |
1515 | ||
51d9e803 SO |
1516 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1517 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1518 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1519 | 0xff, 0xff}; /* System code */ | |
b5193e5d | 1520 | |
51d9e803 SO |
1521 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ |
1522 | 0x0, 0x0, 0x0, | |
1523 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce | 1524 | |
b5193e5d WR |
1525 | unsigned int skb_len = 36 + /* mode (1), mifare (6), |
1526 | felica (18), nfcid3 (10), gb_len (1) */ | |
1527 | gbytes_len + | |
1528 | 1; /* len Tk*/ | |
ad3823ce | 1529 | |
9e2d493e | 1530 | skb = pn533_alloc_skb(dev, skb_len); |
b5193e5d WR |
1531 | if (!skb) |
1532 | return NULL; | |
ad3823ce SO |
1533 | |
1534 | /* DEP support only */ | |
52f2eaee | 1535 | *skb_put(skb, 1) = PN533_INIT_TARGET_DEP; |
b5193e5d WR |
1536 | |
1537 | /* MIFARE params */ | |
1538 | memcpy(skb_put(skb, 6), mifare_params, 6); | |
51d9e803 SO |
1539 | |
1540 | /* Felica params */ | |
b5193e5d WR |
1541 | felica = skb_put(skb, 18); |
1542 | memcpy(felica, felica_params, 18); | |
1543 | get_random_bytes(felica + 2, 6); | |
51d9e803 SO |
1544 | |
1545 | /* NFCID3 */ | |
b5193e5d WR |
1546 | nfcid3 = skb_put(skb, 10); |
1547 | memset(nfcid3, 0, 10); | |
1548 | memcpy(nfcid3, felica, 8); | |
51d9e803 SO |
1549 | |
1550 | /* General bytes */ | |
b5193e5d | 1551 | *skb_put(skb, 1) = gbytes_len; |
51d9e803 | 1552 | |
b5193e5d WR |
1553 | gb = skb_put(skb, gbytes_len); |
1554 | memcpy(gb, gbytes, gbytes_len); | |
ad3823ce | 1555 | |
b5193e5d WR |
1556 | /* Len Tk */ |
1557 | *skb_put(skb, 1) = 0; | |
51d9e803 | 1558 | |
b5193e5d | 1559 | return skb; |
ad3823ce SO |
1560 | } |
1561 | ||
b1bb290a | 1562 | #define PN533_CMD_DATAEXCH_HEAD_LEN 1 |
103b34cf SO |
1563 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 |
1564 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
e4878823 | 1565 | struct sk_buff *resp) |
103b34cf | 1566 | { |
e4878823 | 1567 | u8 status; |
103b34cf SO |
1568 | |
1569 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1570 | ||
e4878823 WR |
1571 | if (IS_ERR(resp)) |
1572 | return PTR_ERR(resp); | |
103b34cf | 1573 | |
e4878823 WR |
1574 | status = resp->data[0]; |
1575 | skb_pull(resp, sizeof(status)); | |
103b34cf | 1576 | |
e4878823 | 1577 | if (status != 0) { |
103b34cf | 1578 | nfc_tm_deactivated(dev->nfc_dev); |
51ad304c | 1579 | dev->tgt_mode = 0; |
e4878823 | 1580 | dev_kfree_skb(resp); |
103b34cf SO |
1581 | return 0; |
1582 | } | |
1583 | ||
e4878823 | 1584 | return nfc_tm_data_received(dev->nfc_dev, resp); |
103b34cf SO |
1585 | } |
1586 | ||
1587 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1588 | { | |
1589 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
103b34cf | 1590 | |
e4878823 WR |
1591 | struct sk_buff *skb; |
1592 | int rc; | |
103b34cf | 1593 | |
e4878823 | 1594 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
103b34cf | 1595 | |
9e2d493e | 1596 | skb = pn533_alloc_skb(dev, 0); |
e4878823 | 1597 | if (!skb) |
103b34cf SO |
1598 | return; |
1599 | ||
e4878823 WR |
1600 | rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb, |
1601 | pn533_tm_get_data_complete, NULL); | |
103b34cf | 1602 | |
e4878823 WR |
1603 | if (rc < 0) |
1604 | dev_kfree_skb(skb); | |
103b34cf SO |
1605 | |
1606 | return; | |
1607 | } | |
1608 | ||
fc40a8c1 | 1609 | #define ATR_REQ_GB_OFFSET 17 |
b5193e5d | 1610 | static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp) |
fe7c5800 | 1611 | { |
b5193e5d | 1612 | u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb; |
fc40a8c1 | 1613 | size_t gb_len; |
103b34cf | 1614 | int rc; |
ad3823ce SO |
1615 | |
1616 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1617 | ||
b5193e5d | 1618 | if (resp->len < ATR_REQ_GB_OFFSET + 1) |
fc40a8c1 SO |
1619 | return -EINVAL; |
1620 | ||
b5193e5d WR |
1621 | mode = resp->data[0]; |
1622 | cmd = &resp->data[1]; | |
ad3823ce | 1623 | |
b5193e5d WR |
1624 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n", |
1625 | mode, resp->len); | |
ad3823ce | 1626 | |
b5193e5d WR |
1627 | if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) == |
1628 | PN533_INIT_TARGET_RESP_ACTIVE) | |
fc40a8c1 SO |
1629 | comm_mode = NFC_COMM_ACTIVE; |
1630 | ||
b5193e5d | 1631 | if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */ |
fc40a8c1 SO |
1632 | return -EOPNOTSUPP; |
1633 | ||
b5193e5d WR |
1634 | gb = cmd + ATR_REQ_GB_OFFSET; |
1635 | gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1); | |
fc40a8c1 | 1636 | |
103b34cf SO |
1637 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1638 | comm_mode, gb, gb_len); | |
1639 | if (rc < 0) { | |
1640 | nfc_dev_err(&dev->interface->dev, | |
1641 | "Error when signaling target activation"); | |
1642 | return rc; | |
1643 | } | |
1644 | ||
51ad304c | 1645 | dev->tgt_mode = 1; |
103b34cf SO |
1646 | queue_work(dev->wq, &dev->tg_work); |
1647 | ||
1648 | return 0; | |
fe7c5800 SO |
1649 | } |
1650 | ||
6fbbdc16 | 1651 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1652 | { |
37cf4fc6 | 1653 | struct pn533 *dev = (struct pn533 *)data; |
6fbbdc16 SO |
1654 | |
1655 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1656 | ||
6fbbdc16 SO |
1657 | dev->cancel_listen = 1; |
1658 | ||
6fbbdc16 SO |
1659 | pn533_poll_next_mod(dev); |
1660 | ||
1661 | queue_work(dev->wq, &dev->poll_work); | |
1662 | } | |
1663 | ||
17e9d9d4 SO |
1664 | static int pn533_rf_complete(struct pn533 *dev, void *arg, |
1665 | struct sk_buff *resp) | |
1666 | { | |
1667 | int rc = 0; | |
1668 | ||
1669 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1670 | ||
1671 | if (IS_ERR(resp)) { | |
1672 | rc = PTR_ERR(resp); | |
1673 | ||
1674 | nfc_dev_err(&dev->interface->dev, "%s RF setting error %d", | |
1675 | __func__, rc); | |
1676 | ||
1677 | return rc; | |
1678 | } | |
1679 | ||
1680 | queue_work(dev->wq, &dev->poll_work); | |
1681 | ||
1682 | dev_kfree_skb(resp); | |
1683 | return rc; | |
1684 | } | |
1685 | ||
1686 | static void pn533_wq_rf(struct work_struct *work) | |
1687 | { | |
1688 | struct pn533 *dev = container_of(work, struct pn533, rf_work); | |
1689 | struct sk_buff *skb; | |
1690 | int rc; | |
1691 | ||
1692 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1693 | ||
1694 | skb = pn533_alloc_skb(dev, 2); | |
1695 | if (!skb) | |
1696 | return; | |
1697 | ||
1698 | *skb_put(skb, 1) = PN533_CFGITEM_RF_FIELD; | |
1699 | *skb_put(skb, 1) = 0; | |
1700 | ||
1701 | rc = pn533_send_cmd_async(dev, PN533_CMD_RF_CONFIGURATION, skb, | |
1702 | pn533_rf_complete, NULL); | |
1703 | if (rc < 0) { | |
1704 | dev_kfree_skb(skb); | |
1705 | nfc_dev_err(&dev->interface->dev, "RF setting error %d", rc); | |
1706 | } | |
1707 | ||
1708 | return; | |
1709 | } | |
1710 | ||
6fbbdc16 | 1711 | static int pn533_poll_complete(struct pn533 *dev, void *arg, |
b5193e5d | 1712 | struct sk_buff *resp) |
6fbbdc16 SO |
1713 | { |
1714 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1715 | int rc; |
1716 | ||
6fbbdc16 | 1717 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1718 | |
b5193e5d WR |
1719 | if (IS_ERR(resp)) { |
1720 | rc = PTR_ERR(resp); | |
1721 | ||
1722 | nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d", | |
1723 | __func__, rc); | |
1724 | ||
1725 | if (rc == -ENOENT) { | |
1726 | if (dev->poll_mod_count != 0) | |
1727 | return rc; | |
1728 | else | |
1729 | goto stop_poll; | |
1730 | } else if (rc < 0) { | |
1731 | nfc_dev_err(&dev->interface->dev, | |
1732 | "Error %d when running poll", rc); | |
1733 | goto stop_poll; | |
1734 | } | |
6fbbdc16 | 1735 | } |
ad3823ce | 1736 | |
6fbbdc16 SO |
1737 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1738 | ||
b5193e5d | 1739 | if (cur_mod->len == 0) { /* Target mode */ |
6fbbdc16 | 1740 | del_timer(&dev->listen_timer); |
b5193e5d WR |
1741 | rc = pn533_init_target_complete(dev, resp); |
1742 | goto done; | |
6fbbdc16 SO |
1743 | } |
1744 | ||
b5193e5d WR |
1745 | /* Initiator mode */ |
1746 | rc = pn533_start_poll_complete(dev, resp); | |
1747 | if (!rc) | |
1748 | goto done; | |
6fbbdc16 | 1749 | |
95cb9e10 | 1750 | if (!dev->poll_mod_count) { |
8b513d0c | 1751 | nfc_dev_dbg(&dev->interface->dev, "Polling has been stopped."); |
95cb9e10 WR |
1752 | goto done; |
1753 | } | |
1754 | ||
b5193e5d | 1755 | pn533_poll_next_mod(dev); |
17e9d9d4 SO |
1756 | /* Not target found, turn radio off */ |
1757 | queue_work(dev->wq, &dev->rf_work); | |
6fbbdc16 | 1758 | |
b5193e5d WR |
1759 | done: |
1760 | dev_kfree_skb(resp); | |
1761 | return rc; | |
6fbbdc16 SO |
1762 | |
1763 | stop_poll: | |
b5193e5d WR |
1764 | nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped"); |
1765 | ||
6fbbdc16 SO |
1766 | pn533_poll_reset_mod_list(dev); |
1767 | dev->poll_protocols = 0; | |
b5193e5d | 1768 | return rc; |
ad3823ce SO |
1769 | } |
1770 | ||
9e2d493e WR |
1771 | static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533 *dev, |
1772 | struct pn533_poll_modulations *mod) | |
c46ee386 | 1773 | { |
b5193e5d | 1774 | struct sk_buff *skb; |
c46ee386 | 1775 | |
9e2d493e | 1776 | skb = pn533_alloc_skb(dev, mod->len); |
b5193e5d WR |
1777 | if (!skb) |
1778 | return NULL; | |
c46ee386 | 1779 | |
b5193e5d | 1780 | memcpy(skb_put(skb, mod->len), &mod->data, mod->len); |
c46ee386 | 1781 | |
b5193e5d | 1782 | return skb; |
6fbbdc16 | 1783 | } |
c46ee386 | 1784 | |
6fbbdc16 SO |
1785 | static int pn533_send_poll_frame(struct pn533 *dev) |
1786 | { | |
b5193e5d WR |
1787 | struct pn533_poll_modulations *mod; |
1788 | struct sk_buff *skb; | |
6fbbdc16 | 1789 | int rc; |
b5193e5d | 1790 | u8 cmd_code; |
c46ee386 | 1791 | |
b5193e5d | 1792 | mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1793 | |
b5193e5d WR |
1794 | nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n", |
1795 | __func__, mod->len); | |
c46ee386 | 1796 | |
b5193e5d WR |
1797 | if (mod->len == 0) { /* Listen mode */ |
1798 | cmd_code = PN533_CMD_TG_INIT_AS_TARGET; | |
9e2d493e | 1799 | skb = pn533_alloc_poll_tg_frame(dev); |
b5193e5d WR |
1800 | } else { /* Polling mode */ |
1801 | cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET; | |
9e2d493e | 1802 | skb = pn533_alloc_poll_in_frame(dev, mod); |
b5193e5d WR |
1803 | } |
1804 | ||
1805 | if (!skb) { | |
1806 | nfc_dev_err(&dev->interface->dev, "Failed to allocate skb."); | |
1807 | return -ENOMEM; | |
1808 | } | |
1809 | ||
1810 | rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete, | |
1811 | NULL); | |
1812 | if (rc < 0) { | |
1813 | dev_kfree_skb(skb); | |
6fbbdc16 | 1814 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); |
b5193e5d | 1815 | } |
c46ee386 | 1816 | |
6fbbdc16 SO |
1817 | return rc; |
1818 | } | |
1819 | ||
1820 | static void pn533_wq_poll(struct work_struct *work) | |
1821 | { | |
1822 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1823 | struct pn533_poll_modulations *cur_mod; | |
1824 | int rc; | |
1825 | ||
1826 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1827 | ||
1828 | nfc_dev_dbg(&dev->interface->dev, | |
1829 | "%s cancel_listen %d modulation len %d", | |
1830 | __func__, dev->cancel_listen, cur_mod->len); | |
1831 | ||
1832 | if (dev->cancel_listen == 1) { | |
1833 | dev->cancel_listen = 0; | |
10cff29a | 1834 | pn533_abort_cmd(dev, GFP_ATOMIC); |
c46ee386 AAJ |
1835 | } |
1836 | ||
6fbbdc16 SO |
1837 | rc = pn533_send_poll_frame(dev); |
1838 | if (rc) | |
1839 | return; | |
c46ee386 | 1840 | |
6fbbdc16 SO |
1841 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1842 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1843 | |
6fbbdc16 | 1844 | return; |
c46ee386 AAJ |
1845 | } |
1846 | ||
fe7c5800 SO |
1847 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1848 | u32 im_protocols, u32 tm_protocols) | |
1849 | { | |
1850 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1851 | ||
1852 | nfc_dev_dbg(&dev->interface->dev, | |
1853 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1854 | __func__, im_protocols, tm_protocols); | |
1855 | ||
1856 | if (dev->tgt_active_prot) { | |
1857 | nfc_dev_err(&dev->interface->dev, | |
1858 | "Cannot poll with a target already activated"); | |
1859 | return -EBUSY; | |
1860 | } | |
1861 | ||
51ad304c SO |
1862 | if (dev->tgt_mode) { |
1863 | nfc_dev_err(&dev->interface->dev, | |
1864 | "Cannot poll while already being activated"); | |
1865 | return -EBUSY; | |
1866 | } | |
1867 | ||
6fbbdc16 SO |
1868 | if (tm_protocols) { |
1869 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1870 | if (dev->gb == NULL) | |
1871 | tm_protocols = 0; | |
1872 | } | |
ad3823ce | 1873 | |
6fbbdc16 SO |
1874 | dev->poll_mod_curr = 0; |
1875 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1876 | dev->poll_protocols = im_protocols; | |
1877 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1878 | |
6fbbdc16 | 1879 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1880 | } |
1881 | ||
c46ee386 AAJ |
1882 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1883 | { | |
1884 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1885 | ||
1886 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1887 | ||
6fbbdc16 SO |
1888 | del_timer(&dev->listen_timer); |
1889 | ||
c46ee386 | 1890 | if (!dev->poll_mod_count) { |
6ca55372 WR |
1891 | nfc_dev_dbg(&dev->interface->dev, |
1892 | "Polling operation was not running"); | |
c46ee386 AAJ |
1893 | return; |
1894 | } | |
1895 | ||
10cff29a | 1896 | pn533_abort_cmd(dev, GFP_KERNEL); |
7c2a04a9 | 1897 | pn533_poll_reset_mod_list(dev); |
c46ee386 AAJ |
1898 | } |
1899 | ||
1900 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1901 | { | |
cb950d93 | 1902 | struct pn533_cmd_activate_response *rsp; |
541d920b | 1903 | u16 gt_len; |
c46ee386 AAJ |
1904 | int rc; |
1905 | ||
cb950d93 WR |
1906 | struct sk_buff *skb; |
1907 | struct sk_buff *resp; | |
c46ee386 | 1908 | |
cb950d93 | 1909 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
c46ee386 | 1910 | |
9e2d493e | 1911 | skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/ |
cb950d93 WR |
1912 | if (!skb) |
1913 | return -ENOMEM; | |
c46ee386 | 1914 | |
cb950d93 WR |
1915 | *skb_put(skb, sizeof(u8)) = 1; /* TG */ |
1916 | *skb_put(skb, sizeof(u8)) = 0; /* Next */ | |
c46ee386 | 1917 | |
cb950d93 WR |
1918 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb); |
1919 | if (IS_ERR(resp)) | |
1920 | return PTR_ERR(resp); | |
c46ee386 | 1921 | |
37cf4fc6 | 1922 | rsp = (struct pn533_cmd_activate_response *)resp->data; |
cb950d93 | 1923 | rc = rsp->status & PN533_CMD_RET_MASK; |
8a0ecfe7 | 1924 | if (rc != PN533_CMD_RET_SUCCESS) { |
a45e1c8d WR |
1925 | nfc_dev_err(&dev->interface->dev, |
1926 | "Target activation failed (error 0x%x)", rc); | |
cb950d93 | 1927 | dev_kfree_skb(resp); |
c46ee386 | 1928 | return -EIO; |
8a0ecfe7 | 1929 | } |
c46ee386 | 1930 | |
541d920b | 1931 | /* ATR_RES general bytes are located at offset 16 */ |
cb950d93 WR |
1932 | gt_len = resp->len - 16; |
1933 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len); | |
541d920b | 1934 | |
cb950d93 | 1935 | dev_kfree_skb(resp); |
541d920b | 1936 | return rc; |
c46ee386 AAJ |
1937 | } |
1938 | ||
90099433 EL |
1939 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1940 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1941 | { |
1942 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1943 | int rc; | |
1944 | ||
1945 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
5d467742 | 1946 | protocol); |
c46ee386 AAJ |
1947 | |
1948 | if (dev->poll_mod_count) { | |
6ca55372 WR |
1949 | nfc_dev_err(&dev->interface->dev, |
1950 | "Cannot activate while polling"); | |
c46ee386 AAJ |
1951 | return -EBUSY; |
1952 | } | |
1953 | ||
1954 | if (dev->tgt_active_prot) { | |
6ca55372 WR |
1955 | nfc_dev_err(&dev->interface->dev, |
1956 | "There is already an active target"); | |
c46ee386 AAJ |
1957 | return -EBUSY; |
1958 | } | |
1959 | ||
1960 | if (!dev->tgt_available_prots) { | |
6ca55372 WR |
1961 | nfc_dev_err(&dev->interface->dev, |
1962 | "There is no available target to activate"); | |
c46ee386 AAJ |
1963 | return -EINVAL; |
1964 | } | |
1965 | ||
1966 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
6ca55372 WR |
1967 | nfc_dev_err(&dev->interface->dev, |
1968 | "Target doesn't support requested proto %u", | |
1969 | protocol); | |
c46ee386 AAJ |
1970 | return -EINVAL; |
1971 | } | |
1972 | ||
1973 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1974 | rc = pn533_activate_target_nfcdep(dev); | |
1975 | if (rc) { | |
6ca55372 WR |
1976 | nfc_dev_err(&dev->interface->dev, |
1977 | "Activating target with DEP failed %d", rc); | |
c46ee386 AAJ |
1978 | return rc; |
1979 | } | |
1980 | } | |
1981 | ||
1982 | dev->tgt_active_prot = protocol; | |
1983 | dev->tgt_available_prots = 0; | |
1984 | ||
1985 | return 0; | |
1986 | } | |
1987 | ||
90099433 EL |
1988 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1989 | struct nfc_target *target) | |
c46ee386 AAJ |
1990 | { |
1991 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
cb950d93 WR |
1992 | |
1993 | struct sk_buff *skb; | |
1994 | struct sk_buff *resp; | |
1995 | ||
c46ee386 AAJ |
1996 | int rc; |
1997 | ||
1998 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1999 | ||
2000 | if (!dev->tgt_active_prot) { | |
2001 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
2002 | return; | |
2003 | } | |
2004 | ||
2005 | dev->tgt_active_prot = 0; | |
6ff73fd2 SO |
2006 | skb_queue_purge(&dev->resp_q); |
2007 | ||
9e2d493e | 2008 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
2009 | if (!skb) |
2010 | return; | |
c46ee386 | 2011 | |
cb950d93 | 2012 | *skb_put(skb, 1) = 1; /* TG*/ |
c46ee386 | 2013 | |
cb950d93 WR |
2014 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb); |
2015 | if (IS_ERR(resp)) | |
c46ee386 | 2016 | return; |
c46ee386 | 2017 | |
cb950d93 | 2018 | rc = resp->data[0] & PN533_CMD_RET_MASK; |
c46ee386 | 2019 | if (rc != PN533_CMD_RET_SUCCESS) |
6ca55372 WR |
2020 | nfc_dev_err(&dev->interface->dev, |
2021 | "Error 0x%x when releasing the target", rc); | |
c46ee386 | 2022 | |
cb950d93 | 2023 | dev_kfree_skb(resp); |
c46ee386 AAJ |
2024 | return; |
2025 | } | |
2026 | ||
361f3cb7 SO |
2027 | |
2028 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
13003649 | 2029 | struct sk_buff *resp) |
361f3cb7 | 2030 | { |
13003649 | 2031 | struct pn533_cmd_jump_dep_response *rsp; |
361f3cb7 SO |
2032 | u8 target_gt_len; |
2033 | int rc; | |
13003649 | 2034 | u8 active = *(u8 *)arg; |
70418e6e WR |
2035 | |
2036 | kfree(arg); | |
361f3cb7 | 2037 | |
13003649 WR |
2038 | if (IS_ERR(resp)) |
2039 | return PTR_ERR(resp); | |
361f3cb7 SO |
2040 | |
2041 | if (dev->tgt_available_prots && | |
2042 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
2043 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 2044 | "The target does not support DEP"); |
13003649 WR |
2045 | rc = -EINVAL; |
2046 | goto error; | |
361f3cb7 SO |
2047 | } |
2048 | ||
13003649 WR |
2049 | rsp = (struct pn533_cmd_jump_dep_response *)resp->data; |
2050 | ||
2051 | rc = rsp->status & PN533_CMD_RET_MASK; | |
361f3cb7 SO |
2052 | if (rc != PN533_CMD_RET_SUCCESS) { |
2053 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 2054 | "Bringing DEP link up failed (error 0x%x)", rc); |
13003649 | 2055 | goto error; |
361f3cb7 SO |
2056 | } |
2057 | ||
2058 | if (!dev->tgt_available_prots) { | |
13003649 WR |
2059 | struct nfc_target nfc_target; |
2060 | ||
361f3cb7 SO |
2061 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); |
2062 | ||
2063 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 | 2064 | nfc_target.nfcid1_len = 10; |
13003649 | 2065 | memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len); |
361f3cb7 SO |
2066 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
2067 | if (rc) | |
13003649 | 2068 | goto error; |
361f3cb7 SO |
2069 | |
2070 | dev->tgt_available_prots = 0; | |
2071 | } | |
2072 | ||
2073 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
2074 | ||
2075 | /* ATR_RES general bytes are located at offset 17 */ | |
13003649 | 2076 | target_gt_len = resp->len - 17; |
361f3cb7 | 2077 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, |
13003649 | 2078 | rsp->gt, target_gt_len); |
361f3cb7 SO |
2079 | if (rc == 0) |
2080 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
13003649 WR |
2081 | dev->nfc_dev->targets[0].idx, |
2082 | !active, NFC_RF_INITIATOR); | |
361f3cb7 | 2083 | |
13003649 WR |
2084 | error: |
2085 | dev_kfree_skb(resp); | |
2086 | return rc; | |
361f3cb7 SO |
2087 | } |
2088 | ||
41a8ec49 SO |
2089 | static int pn533_mod_to_baud(struct pn533 *dev) |
2090 | { | |
2091 | switch (dev->poll_mod_curr) { | |
2092 | case PN533_POLL_MOD_106KBPS_A: | |
2093 | return 0; | |
2094 | case PN533_POLL_MOD_212KBPS_FELICA: | |
2095 | return 1; | |
2096 | case PN533_POLL_MOD_424KBPS_FELICA: | |
2097 | return 2; | |
2098 | default: | |
2099 | return -EINVAL; | |
2100 | } | |
2101 | } | |
2102 | ||
17e9d9d4 | 2103 | static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf); |
d7f3345d | 2104 | #define PASSIVE_DATA_LEN 5 |
90099433 | 2105 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
37cf4fc6 | 2106 | u8 comm_mode, u8 *gb, size_t gb_len) |
361f3cb7 SO |
2107 | { |
2108 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
13003649 WR |
2109 | struct sk_buff *skb; |
2110 | int rc, baud, skb_len; | |
2111 | u8 *next, *arg; | |
2112 | ||
d7f3345d | 2113 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; |
361f3cb7 SO |
2114 | |
2115 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2116 | ||
361f3cb7 SO |
2117 | if (dev->poll_mod_count) { |
2118 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 2119 | "Cannot bring the DEP link up while polling"); |
361f3cb7 SO |
2120 | return -EBUSY; |
2121 | } | |
2122 | ||
2123 | if (dev->tgt_active_prot) { | |
2124 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 2125 | "There is already an active target"); |
361f3cb7 SO |
2126 | return -EBUSY; |
2127 | } | |
2128 | ||
41a8ec49 SO |
2129 | baud = pn533_mod_to_baud(dev); |
2130 | if (baud < 0) { | |
2131 | nfc_dev_err(&dev->interface->dev, | |
2132 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
2133 | return baud; | |
2134 | } | |
2135 | ||
13003649 | 2136 | skb_len = 3 + gb_len; /* ActPass + BR + Next */ |
d7f3345d | 2137 | if (comm_mode == NFC_COMM_PASSIVE) |
13003649 | 2138 | skb_len += PASSIVE_DATA_LEN; |
d7f3345d | 2139 | |
322bce95 SO |
2140 | if (target && target->nfcid2_len) |
2141 | skb_len += NFC_NFCID3_MAXSIZE; | |
2142 | ||
9e2d493e | 2143 | skb = pn533_alloc_skb(dev, skb_len); |
13003649 | 2144 | if (!skb) |
361f3cb7 SO |
2145 | return -ENOMEM; |
2146 | ||
13003649 WR |
2147 | *skb_put(skb, 1) = !comm_mode; /* ActPass */ |
2148 | *skb_put(skb, 1) = baud; /* Baud rate */ | |
2149 | ||
2150 | next = skb_put(skb, 1); /* Next */ | |
2151 | *next = 0; | |
361f3cb7 | 2152 | |
13003649 WR |
2153 | if (comm_mode == NFC_COMM_PASSIVE && baud > 0) { |
2154 | memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, | |
2155 | PASSIVE_DATA_LEN); | |
2156 | *next |= 1; | |
d7f3345d SO |
2157 | } |
2158 | ||
322bce95 SO |
2159 | if (target && target->nfcid2_len) { |
2160 | memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), target->nfcid2, | |
2161 | target->nfcid2_len); | |
2162 | *next |= 2; | |
2163 | } | |
2164 | ||
47807d3d | 2165 | if (gb != NULL && gb_len > 0) { |
13003649 WR |
2166 | memcpy(skb_put(skb, gb_len), gb, gb_len); |
2167 | *next |= 4; /* We have some Gi */ | |
361f3cb7 | 2168 | } else { |
13003649 | 2169 | *next = 0; |
361f3cb7 SO |
2170 | } |
2171 | ||
13003649 WR |
2172 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
2173 | if (!arg) { | |
2174 | dev_kfree_skb(skb); | |
2175 | return -ENOMEM; | |
2176 | } | |
361f3cb7 | 2177 | |
13003649 | 2178 | *arg = !comm_mode; |
361f3cb7 | 2179 | |
17e9d9d4 SO |
2180 | pn533_rf_field(dev->nfc_dev, 0); |
2181 | ||
13003649 WR |
2182 | rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb, |
2183 | pn533_in_dep_link_up_complete, arg); | |
2184 | ||
2185 | if (rc < 0) { | |
2186 | dev_kfree_skb(skb); | |
2187 | kfree(arg); | |
2188 | } | |
361f3cb7 SO |
2189 | |
2190 | return rc; | |
2191 | } | |
2192 | ||
2193 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
2194 | { | |
6fbbdc16 SO |
2195 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
2196 | ||
fcfafc76 WR |
2197 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2198 | ||
6fbbdc16 SO |
2199 | pn533_poll_reset_mod_list(dev); |
2200 | ||
10cff29a WR |
2201 | if (dev->tgt_mode || dev->tgt_active_prot) |
2202 | pn533_abort_cmd(dev, GFP_KERNEL); | |
51ad304c SO |
2203 | |
2204 | dev->tgt_active_prot = 0; | |
2205 | dev->tgt_mode = 0; | |
2206 | ||
2207 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
2208 | |
2209 | return 0; | |
2210 | } | |
2211 | ||
c46ee386 | 2212 | struct pn533_data_exchange_arg { |
c46ee386 AAJ |
2213 | data_exchange_cb_t cb; |
2214 | void *cb_context; | |
2215 | }; | |
2216 | ||
6ff73fd2 SO |
2217 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
2218 | { | |
2219 | struct sk_buff *skb, *tmp, *t; | |
2220 | unsigned int skb_len = 0, tmp_len = 0; | |
2221 | ||
fcfafc76 | 2222 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
6ff73fd2 SO |
2223 | |
2224 | if (skb_queue_empty(&dev->resp_q)) | |
2225 | return NULL; | |
2226 | ||
2227 | if (skb_queue_len(&dev->resp_q) == 1) { | |
2228 | skb = skb_dequeue(&dev->resp_q); | |
2229 | goto out; | |
2230 | } | |
2231 | ||
2232 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
2233 | skb_len += tmp->len; | |
2234 | ||
2235 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
2236 | __func__, skb_len); | |
2237 | ||
2238 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
2239 | if (skb == NULL) | |
2240 | goto out; | |
2241 | ||
2242 | skb_put(skb, skb_len); | |
2243 | ||
2244 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
2245 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
2246 | tmp_len += tmp->len; | |
2247 | } | |
2248 | ||
2249 | out: | |
2250 | skb_queue_purge(&dev->resp_q); | |
2251 | ||
2252 | return skb; | |
2253 | } | |
2254 | ||
c46ee386 | 2255 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
b1e666f5 | 2256 | struct sk_buff *resp) |
c46ee386 AAJ |
2257 | { |
2258 | struct pn533_data_exchange_arg *arg = _arg; | |
b1e666f5 WR |
2259 | struct sk_buff *skb; |
2260 | int rc = 0; | |
2261 | u8 status, ret, mi; | |
c46ee386 AAJ |
2262 | |
2263 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2264 | ||
b1e666f5 WR |
2265 | if (IS_ERR(resp)) { |
2266 | rc = PTR_ERR(resp); | |
2267 | goto _error; | |
c46ee386 AAJ |
2268 | } |
2269 | ||
b1e666f5 WR |
2270 | status = resp->data[0]; |
2271 | ret = status & PN533_CMD_RET_MASK; | |
2272 | mi = status & PN533_CMD_MI_MASK; | |
2273 | ||
2274 | skb_pull(resp, sizeof(status)); | |
c46ee386 | 2275 | |
b1e666f5 WR |
2276 | if (ret != PN533_CMD_RET_SUCCESS) { |
2277 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 2278 | "Exchanging data failed (error 0x%x)", ret); |
b1e666f5 | 2279 | rc = -EIO; |
c46ee386 AAJ |
2280 | goto error; |
2281 | } | |
2282 | ||
b1e666f5 | 2283 | skb_queue_tail(&dev->resp_q, resp); |
6ff73fd2 | 2284 | |
b1e666f5 WR |
2285 | if (mi) { |
2286 | dev->cmd_complete_mi_arg = arg; | |
6ff73fd2 SO |
2287 | queue_work(dev->wq, &dev->mi_work); |
2288 | return -EINPROGRESS; | |
c46ee386 AAJ |
2289 | } |
2290 | ||
6ff73fd2 | 2291 | skb = pn533_build_response(dev); |
b1e666f5 | 2292 | if (!skb) |
6ff73fd2 | 2293 | goto error; |
c46ee386 | 2294 | |
6ff73fd2 | 2295 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
2296 | kfree(arg); |
2297 | return 0; | |
2298 | ||
2299 | error: | |
b1e666f5 WR |
2300 | dev_kfree_skb(resp); |
2301 | _error: | |
6ff73fd2 | 2302 | skb_queue_purge(&dev->resp_q); |
b1e666f5 | 2303 | arg->cb(arg->cb_context, NULL, rc); |
c46ee386 | 2304 | kfree(arg); |
b1e666f5 | 2305 | return rc; |
c46ee386 AAJ |
2306 | } |
2307 | ||
be9ae4ce SO |
2308 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
2309 | struct nfc_target *target, struct sk_buff *skb, | |
2310 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
2311 | { |
2312 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
b1e666f5 | 2313 | struct pn533_data_exchange_arg *arg = NULL; |
c46ee386 AAJ |
2314 | int rc; |
2315 | ||
2316 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2317 | ||
b1e666f5 WR |
2318 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
2319 | /* TODO: Implement support to multi-part data exchange */ | |
2320 | nfc_dev_err(&dev->interface->dev, | |
2321 | "Data length greater than the max allowed: %d", | |
2322 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2323 | rc = -ENOSYS; | |
2324 | goto error; | |
2325 | } | |
2326 | ||
c46ee386 | 2327 | if (!dev->tgt_active_prot) { |
6ca55372 WR |
2328 | nfc_dev_err(&dev->interface->dev, |
2329 | "Can't exchange data if there is no active target"); | |
c46ee386 AAJ |
2330 | rc = -EINVAL; |
2331 | goto error; | |
2332 | } | |
2333 | ||
b1e666f5 | 2334 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
c46ee386 AAJ |
2335 | if (!arg) { |
2336 | rc = -ENOMEM; | |
b1e666f5 | 2337 | goto error; |
c46ee386 AAJ |
2338 | } |
2339 | ||
c46ee386 AAJ |
2340 | arg->cb = cb; |
2341 | arg->cb_context = cb_context; | |
2342 | ||
b1e666f5 WR |
2343 | switch (dev->device_type) { |
2344 | case PN533_DEVICE_PASORI: | |
2345 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2346 | rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU, | |
2347 | skb, | |
2348 | pn533_data_exchange_complete, | |
2349 | arg); | |
2350 | ||
2351 | break; | |
2352 | } | |
2353 | default: | |
2354 | *skb_push(skb, sizeof(u8)) = 1; /*TG*/ | |
2355 | ||
2356 | rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE, | |
2357 | skb, pn533_data_exchange_complete, | |
2358 | arg); | |
2359 | ||
2360 | break; | |
c46ee386 AAJ |
2361 | } |
2362 | ||
b1e666f5 WR |
2363 | if (rc < 0) /* rc from send_async */ |
2364 | goto error; | |
2365 | ||
c46ee386 AAJ |
2366 | return 0; |
2367 | ||
c46ee386 | 2368 | error: |
b1e666f5 WR |
2369 | kfree(arg); |
2370 | dev_kfree_skb(skb); | |
c46ee386 AAJ |
2371 | return rc; |
2372 | } | |
2373 | ||
dadb06f2 | 2374 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
e4878823 | 2375 | struct sk_buff *resp) |
dadb06f2 | 2376 | { |
e4878823 | 2377 | u8 status; |
5b412fd1 | 2378 | |
dadb06f2 SO |
2379 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2380 | ||
e4878823 WR |
2381 | if (IS_ERR(resp)) |
2382 | return PTR_ERR(resp); | |
5b412fd1 | 2383 | |
e4878823 | 2384 | status = resp->data[0]; |
dadb06f2 | 2385 | |
e4878823 | 2386 | dev_kfree_skb(resp); |
dadb06f2 | 2387 | |
e4878823 | 2388 | if (status != 0) { |
dadb06f2 SO |
2389 | nfc_tm_deactivated(dev->nfc_dev); |
2390 | ||
51ad304c SO |
2391 | dev->tgt_mode = 0; |
2392 | ||
dadb06f2 SO |
2393 | return 0; |
2394 | } | |
2395 | ||
2396 | queue_work(dev->wq, &dev->tg_work); | |
2397 | ||
2398 | return 0; | |
2399 | } | |
2400 | ||
2401 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2402 | { | |
2403 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
dadb06f2 SO |
2404 | int rc; |
2405 | ||
2406 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2407 | ||
e4878823 | 2408 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
dadb06f2 | 2409 | nfc_dev_err(&dev->interface->dev, |
e4878823 WR |
2410 | "Data length greater than the max allowed: %d", |
2411 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2412 | return -ENOSYS; | |
dadb06f2 SO |
2413 | } |
2414 | ||
e4878823 WR |
2415 | rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb, |
2416 | pn533_tm_send_complete, NULL); | |
2417 | if (rc < 0) | |
2418 | dev_kfree_skb(skb); | |
dadb06f2 SO |
2419 | |
2420 | return rc; | |
2421 | } | |
2422 | ||
6ff73fd2 SO |
2423 | static void pn533_wq_mi_recv(struct work_struct *work) |
2424 | { | |
2425 | struct pn533 *dev = container_of(work, struct pn533, mi_work); | |
b1e666f5 WR |
2426 | |
2427 | struct sk_buff *skb; | |
6ff73fd2 SO |
2428 | int rc; |
2429 | ||
2430 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2431 | ||
9e2d493e | 2432 | skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN); |
b1e666f5 WR |
2433 | if (!skb) |
2434 | goto error; | |
6ff73fd2 | 2435 | |
b1e666f5 WR |
2436 | switch (dev->device_type) { |
2437 | case PN533_DEVICE_PASORI: | |
2438 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2439 | rc = pn533_send_cmd_direct_async(dev, | |
2440 | PN533_CMD_IN_COMM_THRU, | |
2441 | skb, | |
2442 | pn533_data_exchange_complete, | |
2443 | dev->cmd_complete_mi_arg); | |
6ff73fd2 | 2444 | |
b1e666f5 WR |
2445 | break; |
2446 | } | |
2447 | default: | |
2448 | *skb_put(skb, sizeof(u8)) = 1; /*TG*/ | |
6ff73fd2 | 2449 | |
b1e666f5 WR |
2450 | rc = pn533_send_cmd_direct_async(dev, |
2451 | PN533_CMD_IN_DATA_EXCHANGE, | |
2452 | skb, | |
2453 | pn533_data_exchange_complete, | |
2454 | dev->cmd_complete_mi_arg); | |
b1bb290a | 2455 | |
b1e666f5 | 2456 | break; |
6ff73fd2 SO |
2457 | } |
2458 | ||
b1e666f5 | 2459 | if (rc == 0) /* success */ |
6ff73fd2 SO |
2460 | return; |
2461 | ||
b1e666f5 WR |
2462 | nfc_dev_err(&dev->interface->dev, |
2463 | "Error %d when trying to perform data_exchange", rc); | |
6ff73fd2 | 2464 | |
b1e666f5 | 2465 | dev_kfree_skb(skb); |
140ef7f6 | 2466 | kfree(dev->cmd_complete_mi_arg); |
6ff73fd2 | 2467 | |
b1e666f5 | 2468 | error: |
6ff73fd2 | 2469 | pn533_send_ack(dev, GFP_KERNEL); |
5d50b364 | 2470 | queue_work(dev->wq, &dev->cmd_work); |
6ff73fd2 SO |
2471 | } |
2472 | ||
c46ee386 AAJ |
2473 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2474 | u8 cfgdata_len) | |
2475 | { | |
cb950d93 WR |
2476 | struct sk_buff *skb; |
2477 | struct sk_buff *resp; | |
2478 | ||
2479 | int skb_len; | |
c46ee386 AAJ |
2480 | |
2481 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2482 | ||
cb950d93 | 2483 | skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */ |
c46ee386 | 2484 | |
9e2d493e | 2485 | skb = pn533_alloc_skb(dev, skb_len); |
cb950d93 WR |
2486 | if (!skb) |
2487 | return -ENOMEM; | |
c46ee386 | 2488 | |
cb950d93 WR |
2489 | *skb_put(skb, sizeof(cfgitem)) = cfgitem; |
2490 | memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len); | |
c46ee386 | 2491 | |
cb950d93 WR |
2492 | resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb); |
2493 | if (IS_ERR(resp)) | |
2494 | return PTR_ERR(resp); | |
c46ee386 | 2495 | |
cb950d93 WR |
2496 | dev_kfree_skb(resp); |
2497 | return 0; | |
2498 | } | |
2499 | ||
2500 | static int pn533_get_firmware_version(struct pn533 *dev, | |
2501 | struct pn533_fw_version *fv) | |
2502 | { | |
2503 | struct sk_buff *skb; | |
2504 | struct sk_buff *resp; | |
2505 | ||
9e2d493e | 2506 | skb = pn533_alloc_skb(dev, 0); |
cb950d93 WR |
2507 | if (!skb) |
2508 | return -ENOMEM; | |
2509 | ||
2510 | resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb); | |
2511 | if (IS_ERR(resp)) | |
2512 | return PTR_ERR(resp); | |
2513 | ||
2514 | fv->ic = resp->data[0]; | |
2515 | fv->ver = resp->data[1]; | |
2516 | fv->rev = resp->data[2]; | |
2517 | fv->support = resp->data[3]; | |
2518 | ||
2519 | dev_kfree_skb(resp); | |
2520 | return 0; | |
c46ee386 AAJ |
2521 | } |
2522 | ||
f75c2913 | 2523 | static int pn533_pasori_fw_reset(struct pn533 *dev) |
5c7b0531 | 2524 | { |
cb950d93 WR |
2525 | struct sk_buff *skb; |
2526 | struct sk_buff *resp; | |
5c7b0531 SO |
2527 | |
2528 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2529 | ||
9e2d493e | 2530 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
2531 | if (!skb) |
2532 | return -ENOMEM; | |
5c7b0531 | 2533 | |
cb950d93 | 2534 | *skb_put(skb, sizeof(u8)) = 0x1; |
5c7b0531 | 2535 | |
cb950d93 WR |
2536 | resp = pn533_send_cmd_sync(dev, 0x18, skb); |
2537 | if (IS_ERR(resp)) | |
2538 | return PTR_ERR(resp); | |
5c7b0531 | 2539 | |
cb950d93 | 2540 | dev_kfree_skb(resp); |
5c7b0531 | 2541 | |
94c5c156 | 2542 | return 0; |
5c7b0531 SO |
2543 | } |
2544 | ||
53cf4839 WR |
2545 | struct pn533_acr122_poweron_rdr_arg { |
2546 | int rc; | |
2547 | struct completion done; | |
2548 | }; | |
2549 | ||
2550 | static void pn533_acr122_poweron_rdr_resp(struct urb *urb) | |
2551 | { | |
2552 | struct pn533_acr122_poweron_rdr_arg *arg = urb->context; | |
2553 | ||
2554 | nfc_dev_dbg(&urb->dev->dev, "%s", __func__); | |
2555 | ||
86eca4e7 | 2556 | print_hex_dump_debug("ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1, |
53cf4839 WR |
2557 | urb->transfer_buffer, urb->transfer_buffer_length, |
2558 | false); | |
2559 | ||
2560 | arg->rc = urb->status; | |
2561 | complete(&arg->done); | |
2562 | } | |
2563 | ||
2564 | static int pn533_acr122_poweron_rdr(struct pn533 *dev) | |
2565 | { | |
2566 | /* Power on th reader (CCID cmd) */ | |
2567 | u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON, | |
2568 | 0, 0, 0, 0, 0, 0, 3, 0, 0}; | |
2569 | u8 buf[255]; | |
2570 | int rc; | |
2571 | void *cntx; | |
2572 | struct pn533_acr122_poweron_rdr_arg arg; | |
2573 | ||
2574 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2575 | ||
2576 | init_completion(&arg.done); | |
2577 | cntx = dev->in_urb->context; /* backup context */ | |
2578 | ||
2579 | dev->in_urb->transfer_buffer = buf; | |
2580 | dev->in_urb->transfer_buffer_length = 255; | |
2581 | dev->in_urb->complete = pn533_acr122_poweron_rdr_resp; | |
2582 | dev->in_urb->context = &arg; | |
2583 | ||
2584 | dev->out_urb->transfer_buffer = cmd; | |
2585 | dev->out_urb->transfer_buffer_length = sizeof(cmd); | |
2586 | ||
86eca4e7 | 2587 | print_hex_dump_debug("ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1, |
53cf4839 WR |
2588 | cmd, sizeof(cmd), false); |
2589 | ||
2590 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); | |
2591 | if (rc) { | |
2592 | nfc_dev_err(&dev->interface->dev, | |
2593 | "Reader power on cmd error %d", rc); | |
2594 | return rc; | |
2595 | } | |
2596 | ||
2597 | rc = usb_submit_urb(dev->in_urb, GFP_KERNEL); | |
2598 | if (rc) { | |
2599 | nfc_dev_err(&dev->interface->dev, | |
2600 | "Can't submit for reader power on cmd response %d", | |
2601 | rc); | |
2602 | return rc; | |
2603 | } | |
2604 | ||
2605 | wait_for_completion(&arg.done); | |
2606 | dev->in_urb->context = cntx; /* restore context */ | |
2607 | ||
2608 | return arg.rc; | |
2609 | } | |
2610 | ||
60d9edd5 SO |
2611 | static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf) |
2612 | { | |
2613 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
2614 | u8 rf_field = !!rf; | |
2615 | int rc; | |
2616 | ||
2617 | rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD, | |
2618 | (u8 *)&rf_field, 1); | |
2619 | if (rc) { | |
2620 | nfc_dev_err(&dev->interface->dev, | |
2621 | "Error on setting RF field"); | |
2622 | return rc; | |
2623 | } | |
2624 | ||
2625 | return rc; | |
2626 | } | |
2627 | ||
2628 | int pn533_dev_up(struct nfc_dev *nfc_dev) | |
2629 | { | |
2630 | return pn533_rf_field(nfc_dev, 1); | |
2631 | } | |
2632 | ||
2633 | int pn533_dev_down(struct nfc_dev *nfc_dev) | |
2634 | { | |
2635 | return pn533_rf_field(nfc_dev, 0); | |
2636 | } | |
2637 | ||
5c7b0531 | 2638 | static struct nfc_ops pn533_nfc_ops = { |
60d9edd5 SO |
2639 | .dev_up = pn533_dev_up, |
2640 | .dev_down = pn533_dev_down, | |
361f3cb7 SO |
2641 | .dep_link_up = pn533_dep_link_up, |
2642 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2643 | .start_poll = pn533_start_poll, |
2644 | .stop_poll = pn533_stop_poll, | |
2645 | .activate_target = pn533_activate_target, | |
2646 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2647 | .im_transceive = pn533_transceive, |
dadb06f2 | 2648 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2649 | }; |
2650 | ||
5c7b0531 SO |
2651 | static int pn533_setup(struct pn533 *dev) |
2652 | { | |
2653 | struct pn533_config_max_retries max_retries; | |
2654 | struct pn533_config_timing timing; | |
2655 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2656 | int rc; | |
2657 | ||
2658 | switch (dev->device_type) { | |
2659 | case PN533_DEVICE_STD: | |
5c7b0531 | 2660 | case PN533_DEVICE_PASORI: |
53cf4839 | 2661 | case PN533_DEVICE_ACR122U: |
5c7b0531 SO |
2662 | max_retries.mx_rty_atr = 0x2; |
2663 | max_retries.mx_rty_psl = 0x1; | |
2664 | max_retries.mx_rty_passive_act = | |
2665 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2666 | ||
2667 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2668 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2669 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2670 | ||
2671 | break; | |
2672 | ||
2673 | default: | |
2674 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2675 | dev->device_type); | |
2676 | return -EINVAL; | |
2677 | } | |
2678 | ||
2679 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2680 | (u8 *)&max_retries, sizeof(max_retries)); | |
2681 | if (rc) { | |
2682 | nfc_dev_err(&dev->interface->dev, | |
2683 | "Error on setting MAX_RETRIES config"); | |
2684 | return rc; | |
2685 | } | |
2686 | ||
2687 | ||
2688 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2689 | (u8 *)&timing, sizeof(timing)); | |
2690 | if (rc) { | |
2691 | nfc_dev_err(&dev->interface->dev, | |
2692 | "Error on setting RF timings"); | |
2693 | return rc; | |
2694 | } | |
2695 | ||
2696 | switch (dev->device_type) { | |
2697 | case PN533_DEVICE_STD: | |
2698 | break; | |
2699 | ||
2700 | case PN533_DEVICE_PASORI: | |
f75c2913 | 2701 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2702 | |
2703 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2704 | pasori_cfg, 3); | |
2705 | if (rc) { | |
2706 | nfc_dev_err(&dev->interface->dev, | |
2707 | "Error while settings PASORI config"); | |
2708 | return rc; | |
2709 | } | |
2710 | ||
f75c2913 | 2711 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2712 | |
2713 | break; | |
2714 | } | |
2715 | ||
2716 | return 0; | |
2717 | } | |
2718 | ||
c46ee386 AAJ |
2719 | static int pn533_probe(struct usb_interface *interface, |
2720 | const struct usb_device_id *id) | |
2721 | { | |
cb950d93 | 2722 | struct pn533_fw_version fw_ver; |
c46ee386 AAJ |
2723 | struct pn533 *dev; |
2724 | struct usb_host_interface *iface_desc; | |
2725 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2726 | int in_endpoint = 0; |
2727 | int out_endpoint = 0; | |
2728 | int rc = -ENOMEM; | |
2729 | int i; | |
2730 | u32 protocols; | |
2731 | ||
2732 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2733 | if (!dev) | |
2734 | return -ENOMEM; | |
2735 | ||
2736 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2737 | dev->interface = interface; | |
0201ed03 | 2738 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2739 | |
2740 | iface_desc = interface->cur_altsetting; | |
2741 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2742 | endpoint = &iface_desc->endpoint[i].desc; | |
2743 | ||
8d25ca79 | 2744 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) |
c46ee386 | 2745 | in_endpoint = endpoint->bEndpointAddress; |
c46ee386 | 2746 | |
8d25ca79 | 2747 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) |
c46ee386 | 2748 | out_endpoint = endpoint->bEndpointAddress; |
c46ee386 AAJ |
2749 | } |
2750 | ||
2751 | if (!in_endpoint || !out_endpoint) { | |
6ca55372 WR |
2752 | nfc_dev_err(&interface->dev, |
2753 | "Could not find bulk-in or bulk-out endpoint"); | |
c46ee386 AAJ |
2754 | rc = -ENODEV; |
2755 | goto error; | |
2756 | } | |
2757 | ||
c46ee386 | 2758 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); |
c46ee386 AAJ |
2759 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); |
2760 | ||
a5798094 | 2761 | if (!dev->in_urb || !dev->out_urb) |
c46ee386 AAJ |
2762 | goto error; |
2763 | ||
2764 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
5d467742 WR |
2765 | usb_rcvbulkpipe(dev->udev, in_endpoint), |
2766 | NULL, 0, NULL, dev); | |
c46ee386 | 2767 | usb_fill_bulk_urb(dev->out_urb, dev->udev, |
5d467742 WR |
2768 | usb_sndbulkpipe(dev->udev, out_endpoint), |
2769 | NULL, 0, pn533_send_complete, dev); | |
c46ee386 | 2770 | |
5d50b364 SO |
2771 | INIT_WORK(&dev->cmd_work, pn533_wq_cmd); |
2772 | INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete); | |
6ff73fd2 | 2773 | INIT_WORK(&dev->mi_work, pn533_wq_mi_recv); |
103b34cf | 2774 | INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); |
6fbbdc16 | 2775 | INIT_WORK(&dev->poll_work, pn533_wq_poll); |
17e9d9d4 | 2776 | INIT_WORK(&dev->rf_work, pn533_wq_rf); |
58637c9b | 2777 | dev->wq = alloc_ordered_workqueue("pn533", 0); |
4849f85e SO |
2778 | if (dev->wq == NULL) |
2779 | goto error; | |
c46ee386 | 2780 | |
6fbbdc16 SO |
2781 | init_timer(&dev->listen_timer); |
2782 | dev->listen_timer.data = (unsigned long) dev; | |
2783 | dev->listen_timer.function = pn533_listen_mode_timer; | |
2784 | ||
6ff73fd2 SO |
2785 | skb_queue_head_init(&dev->resp_q); |
2786 | ||
5d50b364 SO |
2787 | INIT_LIST_HEAD(&dev->cmd_queue); |
2788 | ||
c46ee386 AAJ |
2789 | usb_set_intfdata(interface, dev); |
2790 | ||
9e2d493e | 2791 | dev->ops = &pn533_std_frame_ops; |
c46ee386 | 2792 | |
58520373 | 2793 | dev->protocol_type = PN533_PROTO_REQ_ACK_RESP; |
5c7b0531 SO |
2794 | dev->device_type = id->driver_info; |
2795 | switch (dev->device_type) { | |
2796 | case PN533_DEVICE_STD: | |
2797 | protocols = PN533_ALL_PROTOCOLS; | |
2798 | break; | |
2799 | ||
2800 | case PN533_DEVICE_PASORI: | |
2801 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2802 | break; | |
2803 | ||
53cf4839 WR |
2804 | case PN533_DEVICE_ACR122U: |
2805 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2806 | dev->ops = &pn533_acr122_frame_ops; | |
2807 | dev->protocol_type = PN533_PROTO_REQ_RESP, | |
2808 | ||
2809 | rc = pn533_acr122_poweron_rdr(dev); | |
2810 | if (rc < 0) { | |
2811 | nfc_dev_err(&dev->interface->dev, | |
2812 | "Couldn't poweron the reader (error %d)", | |
2813 | rc); | |
2814 | goto destroy_wq; | |
2815 | } | |
2816 | break; | |
2817 | ||
5c7b0531 SO |
2818 | default: |
2819 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2820 | dev->device_type); | |
2821 | rc = -EINVAL; | |
2822 | goto destroy_wq; | |
2823 | } | |
c46ee386 | 2824 | |
9e2d493e WR |
2825 | memset(&fw_ver, 0, sizeof(fw_ver)); |
2826 | rc = pn533_get_firmware_version(dev, &fw_ver); | |
2827 | if (rc < 0) | |
2828 | goto destroy_wq; | |
2829 | ||
2830 | nfc_dev_info(&dev->interface->dev, | |
86eca4e7 OG |
2831 | "NXP PN5%02X firmware ver %d.%d now attached", |
2832 | fw_ver.ic, fw_ver.ver, fw_ver.rev); | |
9e2d493e WR |
2833 | |
2834 | ||
e8753043 | 2835 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
9e2d493e | 2836 | dev->ops->tx_header_len + |
e8753043 | 2837 | PN533_CMD_DATAEXCH_HEAD_LEN, |
9e2d493e | 2838 | dev->ops->tx_tail_len); |
4674d0fe WY |
2839 | if (!dev->nfc_dev) { |
2840 | rc = -ENOMEM; | |
4849f85e | 2841 | goto destroy_wq; |
4674d0fe | 2842 | } |
c46ee386 AAJ |
2843 | |
2844 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2845 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2846 | ||
2847 | rc = nfc_register_device(dev->nfc_dev); | |
2848 | if (rc) | |
2849 | goto free_nfc_dev; | |
2850 | ||
5c7b0531 SO |
2851 | rc = pn533_setup(dev); |
2852 | if (rc) | |
34a85bfc | 2853 | goto unregister_nfc_dev; |
34a85bfc | 2854 | |
c46ee386 AAJ |
2855 | return 0; |
2856 | ||
9f2f8ba1 SO |
2857 | unregister_nfc_dev: |
2858 | nfc_unregister_device(dev->nfc_dev); | |
2859 | ||
c46ee386 AAJ |
2860 | free_nfc_dev: |
2861 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2862 | |
4849f85e SO |
2863 | destroy_wq: |
2864 | destroy_workqueue(dev->wq); | |
c46ee386 | 2865 | error: |
c46ee386 | 2866 | usb_free_urb(dev->in_urb); |
c46ee386 | 2867 | usb_free_urb(dev->out_urb); |
7c5a54fb | 2868 | usb_put_dev(dev->udev); |
c46ee386 AAJ |
2869 | kfree(dev); |
2870 | return rc; | |
2871 | } | |
2872 | ||
2873 | static void pn533_disconnect(struct usb_interface *interface) | |
2874 | { | |
2875 | struct pn533 *dev; | |
5d50b364 | 2876 | struct pn533_cmd *cmd, *n; |
c46ee386 AAJ |
2877 | |
2878 | dev = usb_get_intfdata(interface); | |
2879 | usb_set_intfdata(interface, NULL); | |
2880 | ||
2881 | nfc_unregister_device(dev->nfc_dev); | |
2882 | nfc_free_device(dev->nfc_dev); | |
2883 | ||
2884 | usb_kill_urb(dev->in_urb); | |
2885 | usb_kill_urb(dev->out_urb); | |
2886 | ||
4849f85e | 2887 | destroy_workqueue(dev->wq); |
c46ee386 | 2888 | |
6ff73fd2 SO |
2889 | skb_queue_purge(&dev->resp_q); |
2890 | ||
6fbbdc16 SO |
2891 | del_timer(&dev->listen_timer); |
2892 | ||
5d50b364 SO |
2893 | list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { |
2894 | list_del(&cmd->queue); | |
2895 | kfree(cmd); | |
2896 | } | |
2897 | ||
c46ee386 | 2898 | usb_free_urb(dev->in_urb); |
c46ee386 AAJ |
2899 | usb_free_urb(dev->out_urb); |
2900 | kfree(dev); | |
2901 | ||
276556db | 2902 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2903 | } |
2904 | ||
2905 | static struct usb_driver pn533_driver = { | |
2906 | .name = "pn533", | |
2907 | .probe = pn533_probe, | |
2908 | .disconnect = pn533_disconnect, | |
2909 | .id_table = pn533_table, | |
2910 | }; | |
2911 | ||
fe748483 | 2912 | module_usb_driver(pn533_driver); |
c46ee386 | 2913 | |
e70b96e9 WR |
2914 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); |
2915 | MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2916 | MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>"); | |
c46ee386 AAJ |
2917 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); |
2918 | MODULE_VERSION(VERSION); | |
2919 | MODULE_LICENSE("GPL"); |