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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 */ | |
34a85bfc | 166 | #define PN533_CFGITEM_TIMING 0x02 |
c46ee386 | 167 | #define PN533_CFGITEM_MAX_RETRIES 0x05 |
5c7b0531 | 168 | #define PN533_CFGITEM_PASORI 0x82 |
c46ee386 | 169 | |
34a85bfc SO |
170 | #define PN533_CONFIG_TIMING_102 0xb |
171 | #define PN533_CONFIG_TIMING_204 0xc | |
172 | #define PN533_CONFIG_TIMING_409 0xd | |
173 | #define PN533_CONFIG_TIMING_819 0xe | |
174 | ||
c46ee386 AAJ |
175 | #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 |
176 | #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF | |
177 | ||
178 | struct pn533_config_max_retries { | |
179 | u8 mx_rty_atr; | |
180 | u8 mx_rty_psl; | |
181 | u8 mx_rty_passive_act; | |
182 | } __packed; | |
183 | ||
34a85bfc SO |
184 | struct pn533_config_timing { |
185 | u8 rfu; | |
186 | u8 atr_res_timeout; | |
187 | u8 dep_timeout; | |
188 | } __packed; | |
189 | ||
c46ee386 AAJ |
190 | /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ |
191 | ||
192 | /* felica commands opcode */ | |
193 | #define PN533_FELICA_OPC_SENSF_REQ 0 | |
194 | #define PN533_FELICA_OPC_SENSF_RES 1 | |
195 | /* felica SENSF_REQ parameters */ | |
196 | #define PN533_FELICA_SENSF_SC_ALL 0xFFFF | |
197 | #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 | |
198 | #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 | |
199 | #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 | |
200 | ||
201 | /* type B initiator_data values */ | |
202 | #define PN533_TYPE_B_AFI_ALL_FAMILIES 0 | |
203 | #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 | |
204 | #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 | |
205 | ||
206 | union pn533_cmd_poll_initdata { | |
207 | struct { | |
208 | u8 afi; | |
209 | u8 polling_method; | |
210 | } __packed type_b; | |
211 | struct { | |
212 | u8 opcode; | |
213 | __be16 sc; | |
214 | u8 rc; | |
215 | u8 tsn; | |
216 | } __packed felica; | |
217 | }; | |
218 | ||
219 | /* Poll modulations */ | |
220 | enum { | |
221 | PN533_POLL_MOD_106KBPS_A, | |
222 | PN533_POLL_MOD_212KBPS_FELICA, | |
223 | PN533_POLL_MOD_424KBPS_FELICA, | |
224 | PN533_POLL_MOD_106KBPS_JEWEL, | |
225 | PN533_POLL_MOD_847KBPS_B, | |
6fbbdc16 | 226 | PN533_LISTEN_MOD, |
c46ee386 AAJ |
227 | |
228 | __PN533_POLL_MOD_AFTER_LAST, | |
229 | }; | |
230 | #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) | |
231 | ||
232 | struct pn533_poll_modulations { | |
233 | struct { | |
234 | u8 maxtg; | |
235 | u8 brty; | |
236 | union pn533_cmd_poll_initdata initiator_data; | |
237 | } __packed data; | |
238 | u8 len; | |
239 | }; | |
240 | ||
ef3d56e1 | 241 | static const struct pn533_poll_modulations poll_mod[] = { |
c46ee386 AAJ |
242 | [PN533_POLL_MOD_106KBPS_A] = { |
243 | .data = { | |
244 | .maxtg = 1, | |
245 | .brty = 0, | |
246 | }, | |
247 | .len = 2, | |
248 | }, | |
249 | [PN533_POLL_MOD_212KBPS_FELICA] = { | |
250 | .data = { | |
251 | .maxtg = 1, | |
252 | .brty = 1, | |
253 | .initiator_data.felica = { | |
254 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
255 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
256 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
257 | .tsn = 0, | |
258 | }, | |
259 | }, | |
260 | .len = 7, | |
261 | }, | |
262 | [PN533_POLL_MOD_424KBPS_FELICA] = { | |
263 | .data = { | |
264 | .maxtg = 1, | |
265 | .brty = 2, | |
266 | .initiator_data.felica = { | |
267 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
268 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
269 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
270 | .tsn = 0, | |
271 | }, | |
272 | }, | |
273 | .len = 7, | |
274 | }, | |
275 | [PN533_POLL_MOD_106KBPS_JEWEL] = { | |
276 | .data = { | |
277 | .maxtg = 1, | |
278 | .brty = 4, | |
279 | }, | |
280 | .len = 2, | |
281 | }, | |
282 | [PN533_POLL_MOD_847KBPS_B] = { | |
283 | .data = { | |
284 | .maxtg = 1, | |
285 | .brty = 8, | |
286 | .initiator_data.type_b = { | |
287 | .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, | |
288 | .polling_method = | |
289 | PN533_TYPE_B_POLL_METHOD_TIMESLOT, | |
290 | }, | |
291 | }, | |
292 | .len = 3, | |
293 | }, | |
6fbbdc16 SO |
294 | [PN533_LISTEN_MOD] = { |
295 | .len = 0, | |
296 | }, | |
c46ee386 AAJ |
297 | }; |
298 | ||
299 | /* PN533_CMD_IN_ATR */ | |
300 | ||
c46ee386 AAJ |
301 | struct pn533_cmd_activate_response { |
302 | u8 status; | |
303 | u8 nfcid3t[10]; | |
304 | u8 didt; | |
305 | u8 bst; | |
306 | u8 brt; | |
307 | u8 to; | |
308 | u8 ppt; | |
309 | /* optional */ | |
310 | u8 gt[]; | |
311 | } __packed; | |
312 | ||
361f3cb7 SO |
313 | struct pn533_cmd_jump_dep_response { |
314 | u8 status; | |
315 | u8 tg; | |
316 | u8 nfcid3t[10]; | |
317 | u8 didt; | |
318 | u8 bst; | |
319 | u8 brt; | |
320 | u8 to; | |
321 | u8 ppt; | |
322 | /* optional */ | |
323 | u8 gt[]; | |
324 | } __packed; | |
c46ee386 | 325 | |
ad3823ce SO |
326 | |
327 | /* PN533_TG_INIT_AS_TARGET */ | |
328 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
329 | #define PN533_INIT_TARGET_DEP 0x2 | |
330 | ||
fc40a8c1 SO |
331 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
332 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
333 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
334 | ||
58520373 WR |
335 | enum pn533_protocol_type { |
336 | PN533_PROTO_REQ_ACK_RESP = 0, | |
337 | PN533_PROTO_REQ_RESP | |
338 | }; | |
339 | ||
c46ee386 AAJ |
340 | struct pn533 { |
341 | struct usb_device *udev; | |
342 | struct usb_interface *interface; | |
343 | struct nfc_dev *nfc_dev; | |
d5590bba | 344 | u32 device_type; |
58520373 | 345 | enum pn533_protocol_type protocol_type; |
c46ee386 AAJ |
346 | |
347 | struct urb *out_urb; | |
c46ee386 | 348 | struct urb *in_urb; |
c46ee386 | 349 | |
6ff73fd2 SO |
350 | struct sk_buff_head resp_q; |
351 | ||
4849f85e SO |
352 | struct workqueue_struct *wq; |
353 | struct work_struct cmd_work; | |
5d50b364 | 354 | struct work_struct cmd_complete_work; |
6fbbdc16 | 355 | struct work_struct poll_work; |
6ff73fd2 | 356 | struct work_struct mi_work; |
103b34cf | 357 | struct work_struct tg_work; |
d5590bba WR |
358 | |
359 | struct list_head cmd_queue; | |
360 | struct pn533_cmd *cmd; | |
361 | u8 cmd_pending; | |
d5590bba | 362 | struct mutex cmd_lock; /* protects cmd queue */ |
c46ee386 | 363 | |
b1e666f5 | 364 | void *cmd_complete_mi_arg; |
c46ee386 AAJ |
365 | |
366 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
367 | u8 poll_mod_count; | |
368 | u8 poll_mod_curr; | |
369 | u32 poll_protocols; | |
6fbbdc16 | 370 | u32 listen_protocols; |
d5590bba WR |
371 | struct timer_list listen_timer; |
372 | int cancel_listen; | |
6fbbdc16 SO |
373 | |
374 | u8 *gb; | |
375 | size_t gb_len; | |
c46ee386 AAJ |
376 | |
377 | u8 tgt_available_prots; | |
378 | u8 tgt_active_prot; | |
51ad304c | 379 | u8 tgt_mode; |
5c7b0531 | 380 | |
9e2d493e | 381 | struct pn533_frame_ops *ops; |
5d50b364 SO |
382 | }; |
383 | ||
384 | struct pn533_cmd { | |
385 | struct list_head queue; | |
4b2a9532 | 386 | u8 code; |
f87bc9fb | 387 | int status; |
aada17ac WR |
388 | struct sk_buff *req; |
389 | struct sk_buff *resp; | |
9e2d493e | 390 | int resp_len; |
4231604b WR |
391 | pn533_send_async_complete_t complete_cb; |
392 | void *complete_cb_context; | |
c46ee386 AAJ |
393 | }; |
394 | ||
63123108 | 395 | struct pn533_std_frame { |
c46ee386 AAJ |
396 | u8 preamble; |
397 | __be16 start_frame; | |
398 | u8 datalen; | |
399 | u8 datalen_checksum; | |
400 | u8 data[]; | |
401 | } __packed; | |
402 | ||
9e2d493e WR |
403 | struct pn533_frame_ops { |
404 | void (*tx_frame_init)(void *frame, u8 cmd_code); | |
405 | void (*tx_frame_finish)(void *frame); | |
406 | void (*tx_update_payload_len)(void *frame, int len); | |
407 | int tx_header_len; | |
408 | int tx_tail_len; | |
409 | ||
410 | bool (*rx_is_frame_valid)(void *frame); | |
411 | int (*rx_frame_size)(void *frame); | |
412 | int rx_header_len; | |
413 | int rx_tail_len; | |
414 | ||
415 | int max_payload_len; | |
416 | u8 (*get_cmd_code)(void *frame); | |
417 | }; | |
418 | ||
53cf4839 WR |
419 | struct pn533_acr122_ccid_hdr { |
420 | u8 type; | |
421 | u32 datalen; | |
422 | u8 slot; | |
423 | u8 seq; | |
424 | u8 params[3]; /* 3 msg specific bytes or status, error and 1 specific | |
425 | byte for reposnse msg */ | |
426 | u8 data[]; /* payload */ | |
427 | } __packed; | |
428 | ||
429 | struct pn533_acr122_apdu_hdr { | |
430 | u8 class; | |
431 | u8 ins; | |
432 | u8 p1; | |
433 | u8 p2; | |
434 | } __packed; | |
435 | ||
436 | struct pn533_acr122_tx_frame { | |
437 | struct pn533_acr122_ccid_hdr ccid; | |
438 | struct pn533_acr122_apdu_hdr apdu; | |
439 | u8 datalen; | |
440 | u8 data[]; /* pn533 frame: TFI ... */ | |
441 | } __packed; | |
442 | ||
443 | struct pn533_acr122_rx_frame { | |
444 | struct pn533_acr122_ccid_hdr ccid; | |
445 | u8 data[]; /* pn533 frame : TFI ... */ | |
446 | } __packed; | |
447 | ||
448 | static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code) | |
449 | { | |
450 | struct pn533_acr122_tx_frame *frame = _frame; | |
451 | ||
452 | frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE; | |
453 | frame->ccid.datalen = sizeof(frame->apdu) + 1; /* sizeof(apdu_hdr) + | |
454 | sizeof(datalen) */ | |
455 | frame->ccid.slot = 0; | |
456 | frame->ccid.seq = 0; | |
457 | frame->ccid.params[0] = 0; | |
458 | frame->ccid.params[1] = 0; | |
459 | frame->ccid.params[2] = 0; | |
460 | ||
461 | frame->data[0] = PN533_STD_FRAME_DIR_OUT; | |
462 | frame->data[1] = cmd_code; | |
463 | frame->datalen = 2; /* data[0] + data[1] */ | |
464 | ||
465 | frame->apdu.class = 0xFF; | |
466 | frame->apdu.ins = 0; | |
467 | frame->apdu.p1 = 0; | |
468 | frame->apdu.p2 = 0; | |
469 | } | |
470 | ||
471 | static void pn533_acr122_tx_frame_finish(void *_frame) | |
472 | { | |
473 | struct pn533_acr122_tx_frame *frame = _frame; | |
474 | ||
475 | frame->ccid.datalen += frame->datalen; | |
476 | } | |
477 | ||
478 | static void pn533_acr122_tx_update_payload_len(void *_frame, int len) | |
479 | { | |
480 | struct pn533_acr122_tx_frame *frame = _frame; | |
481 | ||
482 | frame->datalen += len; | |
483 | } | |
484 | ||
485 | static bool pn533_acr122_is_rx_frame_valid(void *_frame) | |
486 | { | |
487 | struct pn533_acr122_rx_frame *frame = _frame; | |
488 | ||
489 | if (frame->ccid.type != 0x83) | |
490 | return false; | |
491 | ||
492 | if (frame->data[frame->ccid.datalen - 2] == 0x63) | |
493 | return false; | |
494 | ||
495 | return true; | |
496 | } | |
497 | ||
498 | static int pn533_acr122_rx_frame_size(void *frame) | |
499 | { | |
500 | struct pn533_acr122_rx_frame *f = frame; | |
501 | ||
502 | /* f->ccid.datalen already includes tail length */ | |
503 | return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen; | |
504 | } | |
505 | ||
506 | static u8 pn533_acr122_get_cmd_code(void *frame) | |
507 | { | |
508 | struct pn533_acr122_rx_frame *f = frame; | |
509 | ||
510 | return PN533_STD_FRAME_CMD(f); | |
511 | } | |
512 | ||
513 | static struct pn533_frame_ops pn533_acr122_frame_ops = { | |
514 | .tx_frame_init = pn533_acr122_tx_frame_init, | |
515 | .tx_frame_finish = pn533_acr122_tx_frame_finish, | |
516 | .tx_update_payload_len = pn533_acr122_tx_update_payload_len, | |
517 | .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN, | |
518 | .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN, | |
519 | ||
520 | .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid, | |
521 | .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN, | |
522 | .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN, | |
523 | .rx_frame_size = pn533_acr122_rx_frame_size, | |
524 | ||
525 | .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN, | |
526 | .get_cmd_code = pn533_acr122_get_cmd_code, | |
527 | }; | |
528 | ||
c46ee386 | 529 | /* The rule: value + checksum = 0 */ |
63123108 | 530 | static inline u8 pn533_std_checksum(u8 value) |
c46ee386 AAJ |
531 | { |
532 | return ~value + 1; | |
533 | } | |
534 | ||
535 | /* The rule: sum(data elements) + checksum = 0 */ | |
63123108 | 536 | static u8 pn533_std_data_checksum(u8 *data, int datalen) |
c46ee386 AAJ |
537 | { |
538 | u8 sum = 0; | |
539 | int i; | |
540 | ||
541 | for (i = 0; i < datalen; i++) | |
542 | sum += data[i]; | |
543 | ||
63123108 | 544 | return pn533_std_checksum(sum); |
c46ee386 AAJ |
545 | } |
546 | ||
63123108 | 547 | static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code) |
c46ee386 | 548 | { |
63123108 | 549 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 550 | |
c46ee386 | 551 | frame->preamble = 0; |
63123108 WR |
552 | frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF); |
553 | PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT; | |
554 | PN533_STD_FRAME_CMD(frame) = cmd_code; | |
c46ee386 AAJ |
555 | frame->datalen = 2; |
556 | } | |
557 | ||
63123108 | 558 | static void pn533_std_tx_frame_finish(void *_frame) |
c46ee386 | 559 | { |
63123108 | 560 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 561 | |
63123108 | 562 | frame->datalen_checksum = pn533_std_checksum(frame->datalen); |
c46ee386 | 563 | |
63123108 WR |
564 | PN533_STD_FRAME_CHECKSUM(frame) = |
565 | pn533_std_data_checksum(frame->data, frame->datalen); | |
c46ee386 | 566 | |
63123108 | 567 | PN533_STD_FRAME_POSTAMBLE(frame) = 0; |
c46ee386 AAJ |
568 | } |
569 | ||
63123108 | 570 | static void pn533_std_tx_update_payload_len(void *_frame, int len) |
9e2d493e | 571 | { |
63123108 | 572 | struct pn533_std_frame *frame = _frame; |
9e2d493e WR |
573 | |
574 | frame->datalen += len; | |
575 | } | |
576 | ||
63123108 | 577 | static bool pn533_std_rx_frame_is_valid(void *_frame) |
c46ee386 AAJ |
578 | { |
579 | u8 checksum; | |
63123108 | 580 | struct pn533_std_frame *frame = _frame; |
c46ee386 | 581 | |
63123108 | 582 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
583 | return false; |
584 | ||
63123108 | 585 | checksum = pn533_std_checksum(frame->datalen); |
c46ee386 AAJ |
586 | if (checksum != frame->datalen_checksum) |
587 | return false; | |
588 | ||
63123108 WR |
589 | checksum = pn533_std_data_checksum(frame->data, frame->datalen); |
590 | if (checksum != PN533_STD_FRAME_CHECKSUM(frame)) | |
c46ee386 AAJ |
591 | return false; |
592 | ||
593 | return true; | |
594 | } | |
595 | ||
63123108 | 596 | static bool pn533_std_rx_frame_is_ack(struct pn533_std_frame *frame) |
c46ee386 | 597 | { |
63123108 | 598 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
599 | return false; |
600 | ||
601 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
602 | return false; | |
603 | ||
604 | return true; | |
605 | } | |
606 | ||
63123108 | 607 | static inline int pn533_std_rx_frame_size(void *frame) |
9e2d493e | 608 | { |
63123108 | 609 | struct pn533_std_frame *f = frame; |
9e2d493e | 610 | |
63123108 WR |
611 | return sizeof(struct pn533_std_frame) + f->datalen + |
612 | PN533_STD_FRAME_TAIL_LEN; | |
9e2d493e WR |
613 | } |
614 | ||
63123108 | 615 | static u8 pn533_std_get_cmd_code(void *frame) |
9e2d493e | 616 | { |
63123108 | 617 | struct pn533_std_frame *f = frame; |
9e2d493e | 618 | |
63123108 | 619 | return PN533_STD_FRAME_CMD(f); |
9e2d493e WR |
620 | } |
621 | ||
ef3d56e1 | 622 | static struct pn533_frame_ops pn533_std_frame_ops = { |
63123108 WR |
623 | .tx_frame_init = pn533_std_tx_frame_init, |
624 | .tx_frame_finish = pn533_std_tx_frame_finish, | |
625 | .tx_update_payload_len = pn533_std_tx_update_payload_len, | |
626 | .tx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
627 | .tx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
628 | ||
629 | .rx_is_frame_valid = pn533_std_rx_frame_is_valid, | |
630 | .rx_frame_size = pn533_std_rx_frame_size, | |
631 | .rx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
632 | .rx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
633 | ||
634 | .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN, | |
635 | .get_cmd_code = pn533_std_get_cmd_code, | |
9e2d493e WR |
636 | }; |
637 | ||
638 | static bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame) | |
c46ee386 | 639 | { |
2c206fb7 | 640 | return (dev->ops->get_cmd_code(frame) == |
4b2a9532 | 641 | PN533_CMD_RESPONSE(dev->cmd->code)); |
c46ee386 AAJ |
642 | } |
643 | ||
c46ee386 AAJ |
644 | static void pn533_recv_response(struct urb *urb) |
645 | { | |
646 | struct pn533 *dev = urb->context; | |
f87bc9fb | 647 | struct pn533_cmd *cmd = dev->cmd; |
9e2d493e | 648 | u8 *in_frame; |
c46ee386 | 649 | |
f87bc9fb WR |
650 | cmd->status = urb->status; |
651 | ||
c46ee386 AAJ |
652 | switch (urb->status) { |
653 | case 0: | |
f8f99171 | 654 | break; /* success */ |
c46ee386 AAJ |
655 | case -ECONNRESET: |
656 | case -ENOENT: | |
6ca55372 | 657 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
658 | "The urb has been canceled (status %d)", |
659 | urb->status); | |
4849f85e | 660 | goto sched_wq; |
f8f99171 | 661 | case -ESHUTDOWN: |
c46ee386 | 662 | default: |
6ca55372 | 663 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 664 | "Urb failure (status %d)", urb->status); |
4849f85e | 665 | goto sched_wq; |
c46ee386 AAJ |
666 | } |
667 | ||
668 | in_frame = dev->in_urb->transfer_buffer; | |
669 | ||
fcfafc76 | 670 | nfc_dev_dbg(&dev->interface->dev, "Received a frame."); |
e279f84f SO |
671 | print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, |
672 | dev->ops->rx_frame_size(in_frame), false); | |
99e591be | 673 | |
9e2d493e | 674 | if (!dev->ops->rx_is_frame_valid(in_frame)) { |
c46ee386 | 675 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); |
f87bc9fb | 676 | cmd->status = -EIO; |
4849f85e | 677 | goto sched_wq; |
c46ee386 AAJ |
678 | } |
679 | ||
9e2d493e | 680 | if (!pn533_rx_frame_is_cmd_response(dev, in_frame)) { |
6ca55372 WR |
681 | nfc_dev_err(&dev->interface->dev, |
682 | "It it not the response to the last command"); | |
f87bc9fb | 683 | cmd->status = -EIO; |
4849f85e | 684 | goto sched_wq; |
c46ee386 AAJ |
685 | } |
686 | ||
4849f85e | 687 | sched_wq: |
5d50b364 | 688 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
689 | } |
690 | ||
691 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
692 | { | |
693 | dev->in_urb->complete = pn533_recv_response; | |
694 | ||
695 | return usb_submit_urb(dev->in_urb, flags); | |
696 | } | |
697 | ||
698 | static void pn533_recv_ack(struct urb *urb) | |
699 | { | |
700 | struct pn533 *dev = urb->context; | |
f87bc9fb | 701 | struct pn533_cmd *cmd = dev->cmd; |
63123108 | 702 | struct pn533_std_frame *in_frame; |
c46ee386 AAJ |
703 | int rc; |
704 | ||
f87bc9fb WR |
705 | cmd->status = urb->status; |
706 | ||
c46ee386 AAJ |
707 | switch (urb->status) { |
708 | case 0: | |
f8f99171 | 709 | break; /* success */ |
c46ee386 AAJ |
710 | case -ECONNRESET: |
711 | case -ENOENT: | |
6ca55372 | 712 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
713 | "The urb has been stopped (status %d)", |
714 | urb->status); | |
4849f85e | 715 | goto sched_wq; |
f8f99171 | 716 | case -ESHUTDOWN: |
c46ee386 | 717 | default: |
6ca55372 | 718 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 719 | "Urb failure (status %d)", urb->status); |
4849f85e | 720 | goto sched_wq; |
c46ee386 AAJ |
721 | } |
722 | ||
723 | in_frame = dev->in_urb->transfer_buffer; | |
724 | ||
63123108 | 725 | if (!pn533_std_rx_frame_is_ack(in_frame)) { |
c46ee386 | 726 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); |
f87bc9fb | 727 | cmd->status = -EIO; |
4849f85e | 728 | goto sched_wq; |
c46ee386 AAJ |
729 | } |
730 | ||
c46ee386 AAJ |
731 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); |
732 | if (rc) { | |
6ca55372 WR |
733 | nfc_dev_err(&dev->interface->dev, |
734 | "usb_submit_urb failed with result %d", rc); | |
f87bc9fb | 735 | cmd->status = rc; |
4849f85e | 736 | goto sched_wq; |
c46ee386 AAJ |
737 | } |
738 | ||
739 | return; | |
740 | ||
4849f85e | 741 | sched_wq: |
5d50b364 | 742 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
743 | } |
744 | ||
745 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
746 | { | |
747 | dev->in_urb->complete = pn533_recv_ack; | |
748 | ||
749 | return usb_submit_urb(dev->in_urb, flags); | |
750 | } | |
751 | ||
752 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
753 | { | |
63123108 | 754 | u8 ack[PN533_STD_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00}; |
5b5a4437 | 755 | /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */ |
c46ee386 AAJ |
756 | int rc; |
757 | ||
758 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
759 | ||
5b5a4437 WR |
760 | dev->out_urb->transfer_buffer = ack; |
761 | dev->out_urb->transfer_buffer_length = sizeof(ack); | |
c46ee386 AAJ |
762 | rc = usb_submit_urb(dev->out_urb, flags); |
763 | ||
764 | return rc; | |
765 | } | |
766 | ||
e8f40531 WR |
767 | static int __pn533_send_frame_async(struct pn533 *dev, |
768 | struct sk_buff *out, | |
769 | struct sk_buff *in, | |
ddf19d20 | 770 | int in_len) |
c46ee386 AAJ |
771 | { |
772 | int rc; | |
773 | ||
e8f40531 WR |
774 | dev->out_urb->transfer_buffer = out->data; |
775 | dev->out_urb->transfer_buffer_length = out->len; | |
c46ee386 | 776 | |
e8f40531 WR |
777 | dev->in_urb->transfer_buffer = in->data; |
778 | dev->in_urb->transfer_buffer_length = in_len; | |
c46ee386 | 779 | |
e279f84f SO |
780 | print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1, |
781 | out->data, out->len, false); | |
99e591be | 782 | |
d94ea4f5 | 783 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); |
c46ee386 AAJ |
784 | if (rc) |
785 | return rc; | |
786 | ||
58520373 WR |
787 | if (dev->protocol_type == PN533_PROTO_REQ_RESP) { |
788 | /* request for response for sent packet directly */ | |
789 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); | |
790 | if (rc) | |
791 | goto error; | |
792 | } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) { | |
793 | /* request for ACK if that's the case */ | |
794 | rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL); | |
795 | if (rc) | |
796 | goto error; | |
797 | } | |
c46ee386 AAJ |
798 | |
799 | return 0; | |
800 | ||
801 | error: | |
802 | usb_unlink_urb(dev->out_urb); | |
803 | return rc; | |
804 | } | |
805 | ||
9e2d493e WR |
806 | static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code, |
807 | struct sk_buff *skb) | |
aada17ac | 808 | { |
aada17ac WR |
809 | /* payload is already there, just update datalen */ |
810 | int payload_len = skb->len; | |
9e2d493e | 811 | struct pn533_frame_ops *ops = dev->ops; |
aada17ac | 812 | |
aada17ac | 813 | |
9e2d493e WR |
814 | skb_push(skb, ops->tx_header_len); |
815 | skb_put(skb, ops->tx_tail_len); | |
aada17ac | 816 | |
9e2d493e WR |
817 | ops->tx_frame_init(skb->data, cmd_code); |
818 | ops->tx_update_payload_len(skb->data, payload_len); | |
819 | ops->tx_frame_finish(skb->data); | |
aada17ac WR |
820 | } |
821 | ||
ddf19d20 | 822 | static int pn533_send_async_complete(struct pn533 *dev) |
aada17ac | 823 | { |
ddf19d20 | 824 | struct pn533_cmd *cmd = dev->cmd; |
f87bc9fb | 825 | int status = cmd->status; |
aada17ac | 826 | |
4231604b WR |
827 | struct sk_buff *req = cmd->req; |
828 | struct sk_buff *resp = cmd->resp; | |
aada17ac | 829 | |
aada17ac WR |
830 | int rc; |
831 | ||
832 | dev_kfree_skb(req); | |
833 | ||
0c33d262 | 834 | if (status < 0) { |
4231604b WR |
835 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, |
836 | ERR_PTR(status)); | |
aada17ac | 837 | dev_kfree_skb(resp); |
2c206fb7 | 838 | goto done; |
aada17ac WR |
839 | } |
840 | ||
9e2d493e WR |
841 | skb_put(resp, dev->ops->rx_frame_size(resp->data)); |
842 | skb_pull(resp, dev->ops->rx_header_len); | |
843 | skb_trim(resp, resp->len - dev->ops->rx_tail_len); | |
aada17ac | 844 | |
4231604b | 845 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp); |
aada17ac | 846 | |
2c206fb7 | 847 | done: |
4231604b | 848 | kfree(cmd); |
2c206fb7 | 849 | dev->cmd = NULL; |
aada17ac WR |
850 | return rc; |
851 | } | |
852 | ||
853 | static int __pn533_send_async(struct pn533 *dev, u8 cmd_code, | |
854 | struct sk_buff *req, struct sk_buff *resp, | |
855 | int resp_len, | |
856 | pn533_send_async_complete_t complete_cb, | |
857 | void *complete_cb_context) | |
858 | { | |
859 | struct pn533_cmd *cmd; | |
aada17ac WR |
860 | int rc = 0; |
861 | ||
fcfafc76 | 862 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code); |
aada17ac | 863 | |
4231604b WR |
864 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
865 | if (!cmd) | |
aada17ac WR |
866 | return -ENOMEM; |
867 | ||
4b2a9532 | 868 | cmd->code = cmd_code; |
4231604b WR |
869 | cmd->req = req; |
870 | cmd->resp = resp; | |
871 | cmd->resp_len = resp_len; | |
872 | cmd->complete_cb = complete_cb; | |
873 | cmd->complete_cb_context = complete_cb_context; | |
aada17ac | 874 | |
9e2d493e | 875 | pn533_build_cmd_frame(dev, cmd_code, req); |
aada17ac WR |
876 | |
877 | mutex_lock(&dev->cmd_lock); | |
878 | ||
879 | if (!dev->cmd_pending) { | |
ddf19d20 | 880 | rc = __pn533_send_frame_async(dev, req, resp, resp_len); |
aada17ac WR |
881 | if (rc) |
882 | goto error; | |
883 | ||
884 | dev->cmd_pending = 1; | |
2c206fb7 | 885 | dev->cmd = cmd; |
aada17ac WR |
886 | goto unlock; |
887 | } | |
888 | ||
fcfafc76 WR |
889 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__, |
890 | cmd_code); | |
aada17ac | 891 | |
aada17ac | 892 | INIT_LIST_HEAD(&cmd->queue); |
aada17ac WR |
893 | list_add_tail(&cmd->queue, &dev->cmd_queue); |
894 | ||
895 | goto unlock; | |
896 | ||
897 | error: | |
4231604b | 898 | kfree(cmd); |
aada17ac WR |
899 | unlock: |
900 | mutex_unlock(&dev->cmd_lock); | |
901 | return rc; | |
15461aeb WR |
902 | } |
903 | ||
904 | static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code, | |
905 | struct sk_buff *req, | |
906 | pn533_send_async_complete_t complete_cb, | |
907 | void *complete_cb_context) | |
908 | { | |
909 | struct sk_buff *resp; | |
910 | int rc; | |
9e2d493e WR |
911 | int resp_len = dev->ops->rx_header_len + |
912 | dev->ops->max_payload_len + | |
913 | dev->ops->rx_tail_len; | |
15461aeb | 914 | |
15461aeb WR |
915 | resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL); |
916 | if (!resp) | |
917 | return -ENOMEM; | |
918 | ||
919 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, | |
920 | complete_cb_context); | |
921 | if (rc) | |
922 | dev_kfree_skb(resp); | |
923 | ||
924 | return rc; | |
aada17ac WR |
925 | } |
926 | ||
927 | static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code, | |
928 | struct sk_buff *req, | |
929 | pn533_send_async_complete_t complete_cb, | |
930 | void *complete_cb_context) | |
931 | { | |
932 | struct sk_buff *resp; | |
933 | int rc; | |
9e2d493e WR |
934 | int resp_len = dev->ops->rx_header_len + |
935 | dev->ops->max_payload_len + | |
936 | dev->ops->rx_tail_len; | |
aada17ac | 937 | |
9e2d493e | 938 | resp = alloc_skb(resp_len, GFP_KERNEL); |
aada17ac WR |
939 | if (!resp) |
940 | return -ENOMEM; | |
941 | ||
9e2d493e WR |
942 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, |
943 | complete_cb_context); | |
aada17ac WR |
944 | if (rc) |
945 | dev_kfree_skb(resp); | |
946 | ||
947 | return rc; | |
948 | } | |
949 | ||
b1e666f5 WR |
950 | /* |
951 | * pn533_send_cmd_direct_async | |
952 | * | |
953 | * The function sends a piority cmd directly to the chip omiting the cmd | |
954 | * queue. It's intended to be used by chaining mechanism of received responses | |
955 | * where the host has to request every single chunk of data before scheduling | |
956 | * next cmd from the queue. | |
957 | */ | |
958 | static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code, | |
959 | struct sk_buff *req, | |
960 | pn533_send_async_complete_t complete_cb, | |
961 | void *complete_cb_context) | |
962 | { | |
b1e666f5 | 963 | struct sk_buff *resp; |
4231604b | 964 | struct pn533_cmd *cmd; |
b1e666f5 | 965 | int rc; |
9e2d493e WR |
966 | int resp_len = dev->ops->rx_header_len + |
967 | dev->ops->max_payload_len + | |
968 | dev->ops->rx_tail_len; | |
b1e666f5 | 969 | |
b1e666f5 WR |
970 | resp = alloc_skb(resp_len, GFP_KERNEL); |
971 | if (!resp) | |
972 | return -ENOMEM; | |
973 | ||
4231604b WR |
974 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
975 | if (!cmd) { | |
b1e666f5 WR |
976 | dev_kfree_skb(resp); |
977 | return -ENOMEM; | |
978 | } | |
979 | ||
4b2a9532 | 980 | cmd->code = cmd_code; |
4231604b WR |
981 | cmd->req = req; |
982 | cmd->resp = resp; | |
983 | cmd->resp_len = resp_len; | |
984 | cmd->complete_cb = complete_cb; | |
985 | cmd->complete_cb_context = complete_cb_context; | |
b1e666f5 | 986 | |
9e2d493e | 987 | pn533_build_cmd_frame(dev, cmd_code, req); |
b1e666f5 | 988 | |
ddf19d20 | 989 | rc = __pn533_send_frame_async(dev, req, resp, resp_len); |
b1e666f5 WR |
990 | if (rc < 0) { |
991 | dev_kfree_skb(resp); | |
4231604b | 992 | kfree(cmd); |
2c206fb7 WR |
993 | } else { |
994 | dev->cmd = cmd; | |
b1e666f5 WR |
995 | } |
996 | ||
997 | return rc; | |
998 | } | |
999 | ||
c79490e1 WR |
1000 | static void pn533_wq_cmd_complete(struct work_struct *work) |
1001 | { | |
1002 | struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); | |
1003 | int rc; | |
1004 | ||
1005 | rc = pn533_send_async_complete(dev); | |
1006 | if (rc != -EINPROGRESS) | |
1007 | queue_work(dev->wq, &dev->cmd_work); | |
1008 | } | |
1009 | ||
5d50b364 SO |
1010 | static void pn533_wq_cmd(struct work_struct *work) |
1011 | { | |
1012 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); | |
1013 | struct pn533_cmd *cmd; | |
0ce1fbdd | 1014 | int rc; |
5d50b364 SO |
1015 | |
1016 | mutex_lock(&dev->cmd_lock); | |
1017 | ||
1018 | if (list_empty(&dev->cmd_queue)) { | |
1019 | dev->cmd_pending = 0; | |
1020 | mutex_unlock(&dev->cmd_lock); | |
1021 | return; | |
1022 | } | |
1023 | ||
1024 | cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); | |
1025 | ||
60ad07ab SJ |
1026 | list_del(&cmd->queue); |
1027 | ||
5d50b364 SO |
1028 | mutex_unlock(&dev->cmd_lock); |
1029 | ||
ddf19d20 | 1030 | rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len); |
0ce1fbdd WR |
1031 | if (rc < 0) { |
1032 | dev_kfree_skb(cmd->req); | |
1033 | dev_kfree_skb(cmd->resp); | |
4231604b | 1034 | kfree(cmd); |
2c206fb7 | 1035 | return; |
0ce1fbdd | 1036 | } |
2c206fb7 WR |
1037 | |
1038 | dev->cmd = cmd; | |
5d50b364 SO |
1039 | } |
1040 | ||
c46ee386 | 1041 | struct pn533_sync_cmd_response { |
94c5c156 | 1042 | struct sk_buff *resp; |
c46ee386 AAJ |
1043 | struct completion done; |
1044 | }; | |
1045 | ||
94c5c156 WR |
1046 | static int pn533_send_sync_complete(struct pn533 *dev, void *_arg, |
1047 | struct sk_buff *resp) | |
1048 | { | |
1049 | struct pn533_sync_cmd_response *arg = _arg; | |
1050 | ||
94c5c156 WR |
1051 | arg->resp = resp; |
1052 | complete(&arg->done); | |
1053 | ||
1054 | return 0; | |
1055 | } | |
1056 | ||
1057 | /* pn533_send_cmd_sync | |
1058 | * | |
1059 | * Please note the req parameter is freed inside the function to | |
1060 | * limit a number of return value interpretations by the caller. | |
1061 | * | |
1062 | * 1. negative in case of error during TX path -> req should be freed | |
1063 | * | |
1064 | * 2. negative in case of error during RX path -> req should not be freed | |
1065 | * as it's been already freed at the begining of RX path by | |
1066 | * async_complete_cb. | |
1067 | * | |
1068 | * 3. valid pointer in case of succesfult RX path | |
1069 | * | |
1070 | * A caller has to check a return value with IS_ERR macro. If the test pass, | |
1071 | * the returned pointer is valid. | |
1072 | * | |
1073 | * */ | |
1074 | static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code, | |
1075 | struct sk_buff *req) | |
1076 | { | |
1077 | int rc; | |
1078 | struct pn533_sync_cmd_response arg; | |
1079 | ||
94c5c156 WR |
1080 | init_completion(&arg.done); |
1081 | ||
1082 | rc = pn533_send_cmd_async(dev, cmd_code, req, | |
1083 | pn533_send_sync_complete, &arg); | |
1084 | if (rc) { | |
1085 | dev_kfree_skb(req); | |
1086 | return ERR_PTR(rc); | |
1087 | } | |
1088 | ||
1089 | wait_for_completion(&arg.done); | |
1090 | ||
1091 | return arg.resp; | |
1092 | } | |
1093 | ||
c46ee386 AAJ |
1094 | static void pn533_send_complete(struct urb *urb) |
1095 | { | |
1096 | struct pn533 *dev = urb->context; | |
1097 | ||
c46ee386 AAJ |
1098 | switch (urb->status) { |
1099 | case 0: | |
f8f99171 | 1100 | break; /* success */ |
c46ee386 AAJ |
1101 | case -ECONNRESET: |
1102 | case -ENOENT: | |
6ca55372 | 1103 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
1104 | "The urb has been stopped (status %d)", |
1105 | urb->status); | |
c46ee386 | 1106 | break; |
f8f99171 | 1107 | case -ESHUTDOWN: |
c46ee386 | 1108 | default: |
f8f99171 WR |
1109 | nfc_dev_err(&dev->interface->dev, |
1110 | "Urb failure (status %d)", urb->status); | |
c46ee386 AAJ |
1111 | } |
1112 | } | |
1113 | ||
10cff29a WR |
1114 | static void pn533_abort_cmd(struct pn533 *dev, gfp_t flags) |
1115 | { | |
1116 | /* ACR122U does not support any command which aborts last | |
1117 | * issued command i.e. as ACK for standard PN533. Additionally, | |
1118 | * it behaves stange, sending broken or incorrect responses, | |
1119 | * when we cancel urb before the chip will send response. | |
1120 | */ | |
1121 | if (dev->device_type == PN533_DEVICE_ACR122U) | |
1122 | return; | |
1123 | ||
1124 | /* An ack will cancel the last issued command */ | |
1125 | pn533_send_ack(dev, flags); | |
1126 | ||
1127 | /* cancel the urb request */ | |
1128 | usb_kill_urb(dev->in_urb); | |
1129 | } | |
1130 | ||
9e2d493e | 1131 | static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size) |
d22b2db6 WR |
1132 | { |
1133 | struct sk_buff *skb; | |
1134 | ||
9e2d493e | 1135 | skb = alloc_skb(dev->ops->tx_header_len + |
d22b2db6 | 1136 | size + |
9e2d493e | 1137 | dev->ops->tx_tail_len, GFP_KERNEL); |
d22b2db6 WR |
1138 | |
1139 | if (skb) | |
9e2d493e | 1140 | skb_reserve(skb, dev->ops->tx_header_len); |
d22b2db6 WR |
1141 | |
1142 | return skb; | |
1143 | } | |
1144 | ||
c46ee386 AAJ |
1145 | struct pn533_target_type_a { |
1146 | __be16 sens_res; | |
1147 | u8 sel_res; | |
1148 | u8 nfcid_len; | |
1149 | u8 nfcid_data[]; | |
1150 | } __packed; | |
1151 | ||
1152 | ||
1153 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
1154 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
1155 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
1156 | ||
1157 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
1158 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
1159 | ||
1160 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
1161 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
1162 | ||
1163 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
1164 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
1165 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
1166 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
1167 | ||
1168 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
1169 | int target_data_len) | |
1170 | { | |
1171 | u8 ssd; | |
1172 | u8 platconf; | |
1173 | ||
1174 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
1175 | return false; | |
1176 | ||
1177 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
1178 | the values are not being used */ | |
1179 | ||
1180 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1181 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
1182 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
1183 | ||
1184 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1185 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1186 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1187 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1188 | return false; |
1189 | ||
1190 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
1191 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
1192 | return false; | |
1193 | ||
1194 | return true; | |
1195 | } | |
1196 | ||
1197 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1198 | int tgt_data_len) | |
1199 | { | |
1200 | struct pn533_target_type_a *tgt_type_a; | |
1201 | ||
37cf4fc6 | 1202 | tgt_type_a = (struct pn533_target_type_a *)tgt_data; |
c46ee386 AAJ |
1203 | |
1204 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
1205 | return -EPROTO; | |
1206 | ||
1207 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
1208 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
1209 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
1210 | break; | |
1211 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
1212 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
1213 | break; | |
1214 | case PN533_TYPE_A_SEL_PROT_DEP: | |
1215 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
1216 | break; | |
1217 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
1218 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
1219 | NFC_PROTO_NFC_DEP_MASK; | |
1220 | break; | |
1221 | } | |
1222 | ||
1223 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
1224 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
1225 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
1226 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1227 | |
1228 | return 0; | |
1229 | } | |
1230 | ||
1231 | struct pn533_target_felica { | |
1232 | u8 pol_res; | |
1233 | u8 opcode; | |
1234 | u8 nfcid2[8]; | |
1235 | u8 pad[8]; | |
1236 | /* optional */ | |
1237 | u8 syst_code[]; | |
1238 | } __packed; | |
1239 | ||
1240 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
1241 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
1242 | ||
1243 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
1244 | int target_data_len) | |
1245 | { | |
1246 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
1247 | return false; | |
1248 | ||
1249 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
1250 | return false; | |
1251 | ||
1252 | return true; | |
1253 | } | |
1254 | ||
1255 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1256 | int tgt_data_len) | |
1257 | { | |
1258 | struct pn533_target_felica *tgt_felica; | |
1259 | ||
37cf4fc6 | 1260 | tgt_felica = (struct pn533_target_felica *)tgt_data; |
c46ee386 AAJ |
1261 | |
1262 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
1263 | return -EPROTO; | |
1264 | ||
5d467742 WR |
1265 | if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) && |
1266 | (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2)) | |
c46ee386 AAJ |
1267 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; |
1268 | else | |
1269 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
1270 | ||
7975754f SO |
1271 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
1272 | nfc_tgt->sensf_res_len = 9; | |
1273 | ||
c46ee386 AAJ |
1274 | return 0; |
1275 | } | |
1276 | ||
1277 | struct pn533_target_jewel { | |
1278 | __be16 sens_res; | |
1279 | u8 jewelid[4]; | |
1280 | } __packed; | |
1281 | ||
1282 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
1283 | int target_data_len) | |
1284 | { | |
1285 | u8 ssd; | |
1286 | u8 platconf; | |
1287 | ||
1288 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
1289 | return false; | |
1290 | ||
1291 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1292 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
1293 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
1294 | ||
1295 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1296 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1297 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1298 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1299 | return false; |
1300 | ||
1301 | return true; | |
1302 | } | |
1303 | ||
1304 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1305 | int tgt_data_len) | |
1306 | { | |
1307 | struct pn533_target_jewel *tgt_jewel; | |
1308 | ||
37cf4fc6 | 1309 | tgt_jewel = (struct pn533_target_jewel *)tgt_data; |
c46ee386 AAJ |
1310 | |
1311 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
1312 | return -EPROTO; | |
1313 | ||
1314 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
1315 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
1316 | nfc_tgt->nfcid1_len = 4; |
1317 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1318 | |
1319 | return 0; | |
1320 | } | |
1321 | ||
1322 | struct pn533_type_b_prot_info { | |
1323 | u8 bitrate; | |
1324 | u8 fsci_type; | |
1325 | u8 fwi_adc_fo; | |
1326 | } __packed; | |
1327 | ||
1328 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
1329 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
1330 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
1331 | ||
1332 | struct pn533_type_b_sens_res { | |
1333 | u8 opcode; | |
1334 | u8 nfcid[4]; | |
1335 | u8 appdata[4]; | |
1336 | struct pn533_type_b_prot_info prot_info; | |
1337 | } __packed; | |
1338 | ||
1339 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
1340 | ||
1341 | struct pn533_target_type_b { | |
1342 | struct pn533_type_b_sens_res sensb_res; | |
1343 | u8 attrib_res_len; | |
1344 | u8 attrib_res[]; | |
1345 | } __packed; | |
1346 | ||
1347 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
1348 | int target_data_len) | |
1349 | { | |
1350 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
1351 | return false; | |
1352 | ||
1353 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
1354 | return false; | |
1355 | ||
1356 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
1357 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
1358 | return false; | |
1359 | ||
1360 | return true; | |
1361 | } | |
1362 | ||
1363 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1364 | int tgt_data_len) | |
1365 | { | |
1366 | struct pn533_target_type_b *tgt_type_b; | |
1367 | ||
37cf4fc6 | 1368 | tgt_type_b = (struct pn533_target_type_b *)tgt_data; |
c46ee386 AAJ |
1369 | |
1370 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
1371 | return -EPROTO; | |
1372 | ||
01d719a2 | 1373 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
1374 | |
1375 | return 0; | |
1376 | } | |
1377 | ||
b5193e5d WR |
1378 | static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata, |
1379 | int tgdata_len) | |
c46ee386 | 1380 | { |
c46ee386 AAJ |
1381 | struct nfc_target nfc_tgt; |
1382 | int rc; | |
1383 | ||
1384 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
b5193e5d | 1385 | dev->poll_mod_curr); |
c46ee386 | 1386 | |
b5193e5d | 1387 | if (tg != 1) |
c46ee386 AAJ |
1388 | return -EPROTO; |
1389 | ||
98b3ac1b SO |
1390 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1391 | ||
c46ee386 AAJ |
1392 | switch (dev->poll_mod_curr) { |
1393 | case PN533_POLL_MOD_106KBPS_A: | |
b5193e5d | 1394 | rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1395 | break; |
1396 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1397 | case PN533_POLL_MOD_424KBPS_FELICA: | |
b5193e5d | 1398 | rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1399 | break; |
1400 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
b5193e5d | 1401 | rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1402 | break; |
1403 | case PN533_POLL_MOD_847KBPS_B: | |
b5193e5d | 1404 | rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1405 | break; |
1406 | default: | |
b5193e5d WR |
1407 | nfc_dev_err(&dev->interface->dev, |
1408 | "Unknown current poll modulation"); | |
c46ee386 AAJ |
1409 | return -EPROTO; |
1410 | } | |
1411 | ||
1412 | if (rc) | |
1413 | return rc; | |
1414 | ||
1415 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
b5193e5d WR |
1416 | nfc_dev_dbg(&dev->interface->dev, |
1417 | "The Tg found doesn't have the desired protocol"); | |
c46ee386 AAJ |
1418 | return -EAGAIN; |
1419 | } | |
1420 | ||
b5193e5d WR |
1421 | nfc_dev_dbg(&dev->interface->dev, |
1422 | "Target found - supported protocols: 0x%x", | |
1423 | nfc_tgt.supported_protocols); | |
c46ee386 AAJ |
1424 | |
1425 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1426 | ||
1427 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1428 | ||
1429 | return 0; | |
1430 | } | |
1431 | ||
6fbbdc16 SO |
1432 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1433 | { | |
1434 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1435 | } | |
1436 | ||
c46ee386 AAJ |
1437 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1438 | { | |
1439 | dev->poll_mod_count = 0; | |
1440 | } | |
1441 | ||
1442 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1443 | { | |
1444 | dev->poll_mod_active[dev->poll_mod_count] = | |
37cf4fc6 | 1445 | (struct pn533_poll_modulations *)&poll_mod[mod_index]; |
c46ee386 AAJ |
1446 | dev->poll_mod_count++; |
1447 | } | |
1448 | ||
6fbbdc16 SO |
1449 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1450 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1451 | { |
1452 | pn533_poll_reset_mod_list(dev); | |
1453 | ||
b08e8603 WR |
1454 | if ((im_protocols & NFC_PROTO_MIFARE_MASK) || |
1455 | (im_protocols & NFC_PROTO_ISO14443_MASK) || | |
1456 | (im_protocols & NFC_PROTO_NFC_DEP_MASK)) | |
c46ee386 AAJ |
1457 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1458 | ||
b08e8603 WR |
1459 | if (im_protocols & NFC_PROTO_FELICA_MASK || |
1460 | im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1461 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1462 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1463 | } | |
1464 | ||
6fbbdc16 | 1465 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1466 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1467 | ||
01d719a2 | 1468 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1469 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1470 | |
6fbbdc16 SO |
1471 | if (tm_protocols) |
1472 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1473 | } |
1474 | ||
b5193e5d | 1475 | static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp) |
c46ee386 | 1476 | { |
b5193e5d WR |
1477 | u8 nbtg, tg, *tgdata; |
1478 | int rc, tgdata_len; | |
c46ee386 AAJ |
1479 | |
1480 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1481 | ||
b5193e5d WR |
1482 | nbtg = resp->data[0]; |
1483 | tg = resp->data[1]; | |
1484 | tgdata = &resp->data[2]; | |
1485 | tgdata_len = resp->len - 2; /* nbtg + tg */ | |
1486 | ||
1487 | if (nbtg) { | |
1488 | rc = pn533_target_found(dev, tg, tgdata, tgdata_len); | |
c46ee386 AAJ |
1489 | |
1490 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1491 | if (rc == 0) { |
1492 | pn533_poll_reset_mod_list(dev); | |
1493 | return 0; | |
1494 | } | |
c46ee386 AAJ |
1495 | } |
1496 | ||
6fbbdc16 | 1497 | return -EAGAIN; |
c46ee386 AAJ |
1498 | } |
1499 | ||
9e2d493e | 1500 | static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev) |
ad3823ce | 1501 | { |
b5193e5d WR |
1502 | struct sk_buff *skb; |
1503 | u8 *felica, *nfcid3, *gb; | |
1504 | ||
9e2d493e WR |
1505 | u8 *gbytes = dev->gb; |
1506 | size_t gbytes_len = dev->gb_len; | |
1507 | ||
51d9e803 SO |
1508 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1509 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1510 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1511 | 0xff, 0xff}; /* System code */ | |
b5193e5d | 1512 | |
51d9e803 SO |
1513 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ |
1514 | 0x0, 0x0, 0x0, | |
1515 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce | 1516 | |
b5193e5d WR |
1517 | unsigned int skb_len = 36 + /* mode (1), mifare (6), |
1518 | felica (18), nfcid3 (10), gb_len (1) */ | |
1519 | gbytes_len + | |
1520 | 1; /* len Tk*/ | |
ad3823ce | 1521 | |
9e2d493e | 1522 | skb = pn533_alloc_skb(dev, skb_len); |
b5193e5d WR |
1523 | if (!skb) |
1524 | return NULL; | |
ad3823ce SO |
1525 | |
1526 | /* DEP support only */ | |
52f2eaee | 1527 | *skb_put(skb, 1) = PN533_INIT_TARGET_DEP; |
b5193e5d WR |
1528 | |
1529 | /* MIFARE params */ | |
1530 | memcpy(skb_put(skb, 6), mifare_params, 6); | |
51d9e803 SO |
1531 | |
1532 | /* Felica params */ | |
b5193e5d WR |
1533 | felica = skb_put(skb, 18); |
1534 | memcpy(felica, felica_params, 18); | |
1535 | get_random_bytes(felica + 2, 6); | |
51d9e803 SO |
1536 | |
1537 | /* NFCID3 */ | |
b5193e5d WR |
1538 | nfcid3 = skb_put(skb, 10); |
1539 | memset(nfcid3, 0, 10); | |
1540 | memcpy(nfcid3, felica, 8); | |
51d9e803 SO |
1541 | |
1542 | /* General bytes */ | |
b5193e5d | 1543 | *skb_put(skb, 1) = gbytes_len; |
51d9e803 | 1544 | |
b5193e5d WR |
1545 | gb = skb_put(skb, gbytes_len); |
1546 | memcpy(gb, gbytes, gbytes_len); | |
ad3823ce | 1547 | |
b5193e5d WR |
1548 | /* Len Tk */ |
1549 | *skb_put(skb, 1) = 0; | |
51d9e803 | 1550 | |
b5193e5d | 1551 | return skb; |
ad3823ce SO |
1552 | } |
1553 | ||
b1bb290a | 1554 | #define PN533_CMD_DATAEXCH_HEAD_LEN 1 |
103b34cf SO |
1555 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 |
1556 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
e4878823 | 1557 | struct sk_buff *resp) |
103b34cf | 1558 | { |
e4878823 | 1559 | u8 status; |
103b34cf SO |
1560 | |
1561 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1562 | ||
e4878823 WR |
1563 | if (IS_ERR(resp)) |
1564 | return PTR_ERR(resp); | |
103b34cf | 1565 | |
e4878823 WR |
1566 | status = resp->data[0]; |
1567 | skb_pull(resp, sizeof(status)); | |
103b34cf | 1568 | |
e4878823 | 1569 | if (status != 0) { |
103b34cf | 1570 | nfc_tm_deactivated(dev->nfc_dev); |
51ad304c | 1571 | dev->tgt_mode = 0; |
e4878823 | 1572 | dev_kfree_skb(resp); |
103b34cf SO |
1573 | return 0; |
1574 | } | |
1575 | ||
e4878823 | 1576 | return nfc_tm_data_received(dev->nfc_dev, resp); |
103b34cf SO |
1577 | } |
1578 | ||
1579 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1580 | { | |
1581 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
103b34cf | 1582 | |
e4878823 WR |
1583 | struct sk_buff *skb; |
1584 | int rc; | |
103b34cf | 1585 | |
e4878823 | 1586 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
103b34cf | 1587 | |
9e2d493e | 1588 | skb = pn533_alloc_skb(dev, 0); |
e4878823 | 1589 | if (!skb) |
103b34cf SO |
1590 | return; |
1591 | ||
e4878823 WR |
1592 | rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb, |
1593 | pn533_tm_get_data_complete, NULL); | |
103b34cf | 1594 | |
e4878823 WR |
1595 | if (rc < 0) |
1596 | dev_kfree_skb(skb); | |
103b34cf SO |
1597 | |
1598 | return; | |
1599 | } | |
1600 | ||
fc40a8c1 | 1601 | #define ATR_REQ_GB_OFFSET 17 |
b5193e5d | 1602 | static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp) |
fe7c5800 | 1603 | { |
b5193e5d | 1604 | u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb; |
fc40a8c1 | 1605 | size_t gb_len; |
103b34cf | 1606 | int rc; |
ad3823ce SO |
1607 | |
1608 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1609 | ||
b5193e5d | 1610 | if (resp->len < ATR_REQ_GB_OFFSET + 1) |
fc40a8c1 SO |
1611 | return -EINVAL; |
1612 | ||
b5193e5d WR |
1613 | mode = resp->data[0]; |
1614 | cmd = &resp->data[1]; | |
ad3823ce | 1615 | |
b5193e5d WR |
1616 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n", |
1617 | mode, resp->len); | |
ad3823ce | 1618 | |
b5193e5d WR |
1619 | if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) == |
1620 | PN533_INIT_TARGET_RESP_ACTIVE) | |
fc40a8c1 SO |
1621 | comm_mode = NFC_COMM_ACTIVE; |
1622 | ||
b5193e5d | 1623 | if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */ |
fc40a8c1 SO |
1624 | return -EOPNOTSUPP; |
1625 | ||
b5193e5d WR |
1626 | gb = cmd + ATR_REQ_GB_OFFSET; |
1627 | gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1); | |
fc40a8c1 | 1628 | |
103b34cf SO |
1629 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1630 | comm_mode, gb, gb_len); | |
1631 | if (rc < 0) { | |
1632 | nfc_dev_err(&dev->interface->dev, | |
1633 | "Error when signaling target activation"); | |
1634 | return rc; | |
1635 | } | |
1636 | ||
51ad304c | 1637 | dev->tgt_mode = 1; |
103b34cf SO |
1638 | queue_work(dev->wq, &dev->tg_work); |
1639 | ||
1640 | return 0; | |
fe7c5800 SO |
1641 | } |
1642 | ||
6fbbdc16 | 1643 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1644 | { |
37cf4fc6 | 1645 | struct pn533 *dev = (struct pn533 *)data; |
6fbbdc16 SO |
1646 | |
1647 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1648 | ||
6fbbdc16 SO |
1649 | dev->cancel_listen = 1; |
1650 | ||
6fbbdc16 SO |
1651 | pn533_poll_next_mod(dev); |
1652 | ||
1653 | queue_work(dev->wq, &dev->poll_work); | |
1654 | } | |
1655 | ||
1656 | static int pn533_poll_complete(struct pn533 *dev, void *arg, | |
b5193e5d | 1657 | struct sk_buff *resp) |
6fbbdc16 SO |
1658 | { |
1659 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1660 | int rc; |
1661 | ||
6fbbdc16 | 1662 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1663 | |
b5193e5d WR |
1664 | if (IS_ERR(resp)) { |
1665 | rc = PTR_ERR(resp); | |
1666 | ||
1667 | nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d", | |
1668 | __func__, rc); | |
1669 | ||
1670 | if (rc == -ENOENT) { | |
1671 | if (dev->poll_mod_count != 0) | |
1672 | return rc; | |
1673 | else | |
1674 | goto stop_poll; | |
1675 | } else if (rc < 0) { | |
1676 | nfc_dev_err(&dev->interface->dev, | |
1677 | "Error %d when running poll", rc); | |
1678 | goto stop_poll; | |
1679 | } | |
6fbbdc16 | 1680 | } |
ad3823ce | 1681 | |
6fbbdc16 SO |
1682 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1683 | ||
b5193e5d | 1684 | if (cur_mod->len == 0) { /* Target mode */ |
6fbbdc16 | 1685 | del_timer(&dev->listen_timer); |
b5193e5d WR |
1686 | rc = pn533_init_target_complete(dev, resp); |
1687 | goto done; | |
6fbbdc16 SO |
1688 | } |
1689 | ||
b5193e5d WR |
1690 | /* Initiator mode */ |
1691 | rc = pn533_start_poll_complete(dev, resp); | |
1692 | if (!rc) | |
1693 | goto done; | |
6fbbdc16 | 1694 | |
95cb9e10 WR |
1695 | if (!dev->poll_mod_count) { |
1696 | nfc_dev_dbg(&dev->interface->dev, "Polling has been stoped."); | |
1697 | goto done; | |
1698 | } | |
1699 | ||
b5193e5d | 1700 | pn533_poll_next_mod(dev); |
6fbbdc16 SO |
1701 | queue_work(dev->wq, &dev->poll_work); |
1702 | ||
b5193e5d WR |
1703 | done: |
1704 | dev_kfree_skb(resp); | |
1705 | return rc; | |
6fbbdc16 SO |
1706 | |
1707 | stop_poll: | |
b5193e5d WR |
1708 | nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped"); |
1709 | ||
6fbbdc16 SO |
1710 | pn533_poll_reset_mod_list(dev); |
1711 | dev->poll_protocols = 0; | |
b5193e5d | 1712 | return rc; |
ad3823ce SO |
1713 | } |
1714 | ||
9e2d493e WR |
1715 | static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533 *dev, |
1716 | struct pn533_poll_modulations *mod) | |
c46ee386 | 1717 | { |
b5193e5d | 1718 | struct sk_buff *skb; |
c46ee386 | 1719 | |
9e2d493e | 1720 | skb = pn533_alloc_skb(dev, mod->len); |
b5193e5d WR |
1721 | if (!skb) |
1722 | return NULL; | |
c46ee386 | 1723 | |
b5193e5d | 1724 | memcpy(skb_put(skb, mod->len), &mod->data, mod->len); |
c46ee386 | 1725 | |
b5193e5d | 1726 | return skb; |
6fbbdc16 | 1727 | } |
c46ee386 | 1728 | |
6fbbdc16 SO |
1729 | static int pn533_send_poll_frame(struct pn533 *dev) |
1730 | { | |
b5193e5d WR |
1731 | struct pn533_poll_modulations *mod; |
1732 | struct sk_buff *skb; | |
6fbbdc16 | 1733 | int rc; |
b5193e5d | 1734 | u8 cmd_code; |
c46ee386 | 1735 | |
b5193e5d | 1736 | mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1737 | |
b5193e5d WR |
1738 | nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n", |
1739 | __func__, mod->len); | |
c46ee386 | 1740 | |
b5193e5d WR |
1741 | if (mod->len == 0) { /* Listen mode */ |
1742 | cmd_code = PN533_CMD_TG_INIT_AS_TARGET; | |
9e2d493e | 1743 | skb = pn533_alloc_poll_tg_frame(dev); |
b5193e5d WR |
1744 | } else { /* Polling mode */ |
1745 | cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET; | |
9e2d493e | 1746 | skb = pn533_alloc_poll_in_frame(dev, mod); |
b5193e5d WR |
1747 | } |
1748 | ||
1749 | if (!skb) { | |
1750 | nfc_dev_err(&dev->interface->dev, "Failed to allocate skb."); | |
1751 | return -ENOMEM; | |
1752 | } | |
1753 | ||
1754 | rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete, | |
1755 | NULL); | |
1756 | if (rc < 0) { | |
1757 | dev_kfree_skb(skb); | |
6fbbdc16 | 1758 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); |
b5193e5d | 1759 | } |
c46ee386 | 1760 | |
6fbbdc16 SO |
1761 | return rc; |
1762 | } | |
1763 | ||
1764 | static void pn533_wq_poll(struct work_struct *work) | |
1765 | { | |
1766 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1767 | struct pn533_poll_modulations *cur_mod; | |
1768 | int rc; | |
1769 | ||
1770 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1771 | ||
1772 | nfc_dev_dbg(&dev->interface->dev, | |
1773 | "%s cancel_listen %d modulation len %d", | |
1774 | __func__, dev->cancel_listen, cur_mod->len); | |
1775 | ||
1776 | if (dev->cancel_listen == 1) { | |
1777 | dev->cancel_listen = 0; | |
10cff29a | 1778 | pn533_abort_cmd(dev, GFP_ATOMIC); |
c46ee386 AAJ |
1779 | } |
1780 | ||
6fbbdc16 SO |
1781 | rc = pn533_send_poll_frame(dev); |
1782 | if (rc) | |
1783 | return; | |
c46ee386 | 1784 | |
6fbbdc16 SO |
1785 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1786 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1787 | |
6fbbdc16 | 1788 | return; |
c46ee386 AAJ |
1789 | } |
1790 | ||
fe7c5800 SO |
1791 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1792 | u32 im_protocols, u32 tm_protocols) | |
1793 | { | |
1794 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1795 | ||
1796 | nfc_dev_dbg(&dev->interface->dev, | |
1797 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1798 | __func__, im_protocols, tm_protocols); | |
1799 | ||
1800 | if (dev->tgt_active_prot) { | |
1801 | nfc_dev_err(&dev->interface->dev, | |
1802 | "Cannot poll with a target already activated"); | |
1803 | return -EBUSY; | |
1804 | } | |
1805 | ||
51ad304c SO |
1806 | if (dev->tgt_mode) { |
1807 | nfc_dev_err(&dev->interface->dev, | |
1808 | "Cannot poll while already being activated"); | |
1809 | return -EBUSY; | |
1810 | } | |
1811 | ||
6fbbdc16 SO |
1812 | if (tm_protocols) { |
1813 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1814 | if (dev->gb == NULL) | |
1815 | tm_protocols = 0; | |
1816 | } | |
ad3823ce | 1817 | |
6fbbdc16 SO |
1818 | dev->poll_mod_curr = 0; |
1819 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1820 | dev->poll_protocols = im_protocols; | |
1821 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1822 | |
6fbbdc16 | 1823 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1824 | } |
1825 | ||
c46ee386 AAJ |
1826 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1827 | { | |
1828 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1829 | ||
1830 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1831 | ||
6fbbdc16 SO |
1832 | del_timer(&dev->listen_timer); |
1833 | ||
c46ee386 | 1834 | if (!dev->poll_mod_count) { |
6ca55372 WR |
1835 | nfc_dev_dbg(&dev->interface->dev, |
1836 | "Polling operation was not running"); | |
c46ee386 AAJ |
1837 | return; |
1838 | } | |
1839 | ||
10cff29a | 1840 | pn533_abort_cmd(dev, GFP_KERNEL); |
7c2a04a9 | 1841 | pn533_poll_reset_mod_list(dev); |
c46ee386 AAJ |
1842 | } |
1843 | ||
1844 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1845 | { | |
cb950d93 | 1846 | struct pn533_cmd_activate_response *rsp; |
541d920b | 1847 | u16 gt_len; |
c46ee386 AAJ |
1848 | int rc; |
1849 | ||
cb950d93 WR |
1850 | struct sk_buff *skb; |
1851 | struct sk_buff *resp; | |
c46ee386 | 1852 | |
cb950d93 | 1853 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
c46ee386 | 1854 | |
9e2d493e | 1855 | skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/ |
cb950d93 WR |
1856 | if (!skb) |
1857 | return -ENOMEM; | |
c46ee386 | 1858 | |
cb950d93 WR |
1859 | *skb_put(skb, sizeof(u8)) = 1; /* TG */ |
1860 | *skb_put(skb, sizeof(u8)) = 0; /* Next */ | |
c46ee386 | 1861 | |
cb950d93 WR |
1862 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb); |
1863 | if (IS_ERR(resp)) | |
1864 | return PTR_ERR(resp); | |
c46ee386 | 1865 | |
37cf4fc6 | 1866 | rsp = (struct pn533_cmd_activate_response *)resp->data; |
cb950d93 | 1867 | rc = rsp->status & PN533_CMD_RET_MASK; |
8a0ecfe7 | 1868 | if (rc != PN533_CMD_RET_SUCCESS) { |
a45e1c8d WR |
1869 | nfc_dev_err(&dev->interface->dev, |
1870 | "Target activation failed (error 0x%x)", rc); | |
cb950d93 | 1871 | dev_kfree_skb(resp); |
c46ee386 | 1872 | return -EIO; |
8a0ecfe7 | 1873 | } |
c46ee386 | 1874 | |
541d920b | 1875 | /* ATR_RES general bytes are located at offset 16 */ |
cb950d93 WR |
1876 | gt_len = resp->len - 16; |
1877 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len); | |
541d920b | 1878 | |
cb950d93 | 1879 | dev_kfree_skb(resp); |
541d920b | 1880 | return rc; |
c46ee386 AAJ |
1881 | } |
1882 | ||
90099433 EL |
1883 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1884 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1885 | { |
1886 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1887 | int rc; | |
1888 | ||
1889 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
5d467742 | 1890 | protocol); |
c46ee386 AAJ |
1891 | |
1892 | if (dev->poll_mod_count) { | |
6ca55372 WR |
1893 | nfc_dev_err(&dev->interface->dev, |
1894 | "Cannot activate while polling"); | |
c46ee386 AAJ |
1895 | return -EBUSY; |
1896 | } | |
1897 | ||
1898 | if (dev->tgt_active_prot) { | |
6ca55372 WR |
1899 | nfc_dev_err(&dev->interface->dev, |
1900 | "There is already an active target"); | |
c46ee386 AAJ |
1901 | return -EBUSY; |
1902 | } | |
1903 | ||
1904 | if (!dev->tgt_available_prots) { | |
6ca55372 WR |
1905 | nfc_dev_err(&dev->interface->dev, |
1906 | "There is no available target to activate"); | |
c46ee386 AAJ |
1907 | return -EINVAL; |
1908 | } | |
1909 | ||
1910 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
6ca55372 WR |
1911 | nfc_dev_err(&dev->interface->dev, |
1912 | "Target doesn't support requested proto %u", | |
1913 | protocol); | |
c46ee386 AAJ |
1914 | return -EINVAL; |
1915 | } | |
1916 | ||
1917 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1918 | rc = pn533_activate_target_nfcdep(dev); | |
1919 | if (rc) { | |
6ca55372 WR |
1920 | nfc_dev_err(&dev->interface->dev, |
1921 | "Activating target with DEP failed %d", rc); | |
c46ee386 AAJ |
1922 | return rc; |
1923 | } | |
1924 | } | |
1925 | ||
1926 | dev->tgt_active_prot = protocol; | |
1927 | dev->tgt_available_prots = 0; | |
1928 | ||
1929 | return 0; | |
1930 | } | |
1931 | ||
90099433 EL |
1932 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1933 | struct nfc_target *target) | |
c46ee386 AAJ |
1934 | { |
1935 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
cb950d93 WR |
1936 | |
1937 | struct sk_buff *skb; | |
1938 | struct sk_buff *resp; | |
1939 | ||
c46ee386 AAJ |
1940 | int rc; |
1941 | ||
1942 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1943 | ||
1944 | if (!dev->tgt_active_prot) { | |
1945 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
1946 | return; | |
1947 | } | |
1948 | ||
1949 | dev->tgt_active_prot = 0; | |
6ff73fd2 SO |
1950 | skb_queue_purge(&dev->resp_q); |
1951 | ||
9e2d493e | 1952 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
1953 | if (!skb) |
1954 | return; | |
c46ee386 | 1955 | |
cb950d93 | 1956 | *skb_put(skb, 1) = 1; /* TG*/ |
c46ee386 | 1957 | |
cb950d93 WR |
1958 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb); |
1959 | if (IS_ERR(resp)) | |
c46ee386 | 1960 | return; |
c46ee386 | 1961 | |
cb950d93 | 1962 | rc = resp->data[0] & PN533_CMD_RET_MASK; |
c46ee386 | 1963 | if (rc != PN533_CMD_RET_SUCCESS) |
6ca55372 WR |
1964 | nfc_dev_err(&dev->interface->dev, |
1965 | "Error 0x%x when releasing the target", rc); | |
c46ee386 | 1966 | |
cb950d93 | 1967 | dev_kfree_skb(resp); |
c46ee386 AAJ |
1968 | return; |
1969 | } | |
1970 | ||
361f3cb7 SO |
1971 | |
1972 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
13003649 | 1973 | struct sk_buff *resp) |
361f3cb7 | 1974 | { |
13003649 | 1975 | struct pn533_cmd_jump_dep_response *rsp; |
361f3cb7 SO |
1976 | u8 target_gt_len; |
1977 | int rc; | |
13003649 | 1978 | u8 active = *(u8 *)arg; |
70418e6e WR |
1979 | |
1980 | kfree(arg); | |
361f3cb7 | 1981 | |
13003649 WR |
1982 | if (IS_ERR(resp)) |
1983 | return PTR_ERR(resp); | |
361f3cb7 SO |
1984 | |
1985 | if (dev->tgt_available_prots && | |
1986 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
1987 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1988 | "The target does not support DEP"); |
13003649 WR |
1989 | rc = -EINVAL; |
1990 | goto error; | |
361f3cb7 SO |
1991 | } |
1992 | ||
13003649 WR |
1993 | rsp = (struct pn533_cmd_jump_dep_response *)resp->data; |
1994 | ||
1995 | rc = rsp->status & PN533_CMD_RET_MASK; | |
361f3cb7 SO |
1996 | if (rc != PN533_CMD_RET_SUCCESS) { |
1997 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 1998 | "Bringing DEP link up failed (error 0x%x)", rc); |
13003649 | 1999 | goto error; |
361f3cb7 SO |
2000 | } |
2001 | ||
2002 | if (!dev->tgt_available_prots) { | |
13003649 WR |
2003 | struct nfc_target nfc_target; |
2004 | ||
361f3cb7 SO |
2005 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); |
2006 | ||
2007 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 | 2008 | nfc_target.nfcid1_len = 10; |
13003649 | 2009 | memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len); |
361f3cb7 SO |
2010 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
2011 | if (rc) | |
13003649 | 2012 | goto error; |
361f3cb7 SO |
2013 | |
2014 | dev->tgt_available_prots = 0; | |
2015 | } | |
2016 | ||
2017 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
2018 | ||
2019 | /* ATR_RES general bytes are located at offset 17 */ | |
13003649 | 2020 | target_gt_len = resp->len - 17; |
361f3cb7 | 2021 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, |
13003649 | 2022 | rsp->gt, target_gt_len); |
361f3cb7 SO |
2023 | if (rc == 0) |
2024 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
13003649 WR |
2025 | dev->nfc_dev->targets[0].idx, |
2026 | !active, NFC_RF_INITIATOR); | |
361f3cb7 | 2027 | |
13003649 WR |
2028 | error: |
2029 | dev_kfree_skb(resp); | |
2030 | return rc; | |
361f3cb7 SO |
2031 | } |
2032 | ||
41a8ec49 SO |
2033 | static int pn533_mod_to_baud(struct pn533 *dev) |
2034 | { | |
2035 | switch (dev->poll_mod_curr) { | |
2036 | case PN533_POLL_MOD_106KBPS_A: | |
2037 | return 0; | |
2038 | case PN533_POLL_MOD_212KBPS_FELICA: | |
2039 | return 1; | |
2040 | case PN533_POLL_MOD_424KBPS_FELICA: | |
2041 | return 2; | |
2042 | default: | |
2043 | return -EINVAL; | |
2044 | } | |
2045 | } | |
2046 | ||
d7f3345d | 2047 | #define PASSIVE_DATA_LEN 5 |
90099433 | 2048 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
37cf4fc6 | 2049 | u8 comm_mode, u8 *gb, size_t gb_len) |
361f3cb7 SO |
2050 | { |
2051 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
13003649 WR |
2052 | struct sk_buff *skb; |
2053 | int rc, baud, skb_len; | |
2054 | u8 *next, *arg; | |
2055 | ||
d7f3345d | 2056 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; |
361f3cb7 SO |
2057 | |
2058 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2059 | ||
361f3cb7 SO |
2060 | if (dev->poll_mod_count) { |
2061 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 2062 | "Cannot bring the DEP link up while polling"); |
361f3cb7 SO |
2063 | return -EBUSY; |
2064 | } | |
2065 | ||
2066 | if (dev->tgt_active_prot) { | |
2067 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 2068 | "There is already an active target"); |
361f3cb7 SO |
2069 | return -EBUSY; |
2070 | } | |
2071 | ||
41a8ec49 SO |
2072 | baud = pn533_mod_to_baud(dev); |
2073 | if (baud < 0) { | |
2074 | nfc_dev_err(&dev->interface->dev, | |
2075 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
2076 | return baud; | |
2077 | } | |
2078 | ||
13003649 | 2079 | skb_len = 3 + gb_len; /* ActPass + BR + Next */ |
d7f3345d | 2080 | if (comm_mode == NFC_COMM_PASSIVE) |
13003649 | 2081 | skb_len += PASSIVE_DATA_LEN; |
d7f3345d | 2082 | |
9e2d493e | 2083 | skb = pn533_alloc_skb(dev, skb_len); |
13003649 | 2084 | if (!skb) |
361f3cb7 SO |
2085 | return -ENOMEM; |
2086 | ||
13003649 WR |
2087 | *skb_put(skb, 1) = !comm_mode; /* ActPass */ |
2088 | *skb_put(skb, 1) = baud; /* Baud rate */ | |
2089 | ||
2090 | next = skb_put(skb, 1); /* Next */ | |
2091 | *next = 0; | |
361f3cb7 | 2092 | |
13003649 WR |
2093 | if (comm_mode == NFC_COMM_PASSIVE && baud > 0) { |
2094 | memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, | |
2095 | PASSIVE_DATA_LEN); | |
2096 | *next |= 1; | |
d7f3345d SO |
2097 | } |
2098 | ||
47807d3d | 2099 | if (gb != NULL && gb_len > 0) { |
13003649 WR |
2100 | memcpy(skb_put(skb, gb_len), gb, gb_len); |
2101 | *next |= 4; /* We have some Gi */ | |
361f3cb7 | 2102 | } else { |
13003649 | 2103 | *next = 0; |
361f3cb7 SO |
2104 | } |
2105 | ||
13003649 WR |
2106 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
2107 | if (!arg) { | |
2108 | dev_kfree_skb(skb); | |
2109 | return -ENOMEM; | |
2110 | } | |
361f3cb7 | 2111 | |
13003649 | 2112 | *arg = !comm_mode; |
361f3cb7 | 2113 | |
13003649 WR |
2114 | rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb, |
2115 | pn533_in_dep_link_up_complete, arg); | |
2116 | ||
2117 | if (rc < 0) { | |
2118 | dev_kfree_skb(skb); | |
2119 | kfree(arg); | |
2120 | } | |
361f3cb7 SO |
2121 | |
2122 | return rc; | |
2123 | } | |
2124 | ||
2125 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
2126 | { | |
6fbbdc16 SO |
2127 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
2128 | ||
fcfafc76 WR |
2129 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2130 | ||
6fbbdc16 SO |
2131 | pn533_poll_reset_mod_list(dev); |
2132 | ||
10cff29a WR |
2133 | if (dev->tgt_mode || dev->tgt_active_prot) |
2134 | pn533_abort_cmd(dev, GFP_KERNEL); | |
51ad304c SO |
2135 | |
2136 | dev->tgt_active_prot = 0; | |
2137 | dev->tgt_mode = 0; | |
2138 | ||
2139 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
2140 | |
2141 | return 0; | |
2142 | } | |
2143 | ||
c46ee386 | 2144 | struct pn533_data_exchange_arg { |
c46ee386 AAJ |
2145 | data_exchange_cb_t cb; |
2146 | void *cb_context; | |
2147 | }; | |
2148 | ||
6ff73fd2 SO |
2149 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
2150 | { | |
2151 | struct sk_buff *skb, *tmp, *t; | |
2152 | unsigned int skb_len = 0, tmp_len = 0; | |
2153 | ||
fcfafc76 | 2154 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
6ff73fd2 SO |
2155 | |
2156 | if (skb_queue_empty(&dev->resp_q)) | |
2157 | return NULL; | |
2158 | ||
2159 | if (skb_queue_len(&dev->resp_q) == 1) { | |
2160 | skb = skb_dequeue(&dev->resp_q); | |
2161 | goto out; | |
2162 | } | |
2163 | ||
2164 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
2165 | skb_len += tmp->len; | |
2166 | ||
2167 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
2168 | __func__, skb_len); | |
2169 | ||
2170 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
2171 | if (skb == NULL) | |
2172 | goto out; | |
2173 | ||
2174 | skb_put(skb, skb_len); | |
2175 | ||
2176 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
2177 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
2178 | tmp_len += tmp->len; | |
2179 | } | |
2180 | ||
2181 | out: | |
2182 | skb_queue_purge(&dev->resp_q); | |
2183 | ||
2184 | return skb; | |
2185 | } | |
2186 | ||
c46ee386 | 2187 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
b1e666f5 | 2188 | struct sk_buff *resp) |
c46ee386 AAJ |
2189 | { |
2190 | struct pn533_data_exchange_arg *arg = _arg; | |
b1e666f5 WR |
2191 | struct sk_buff *skb; |
2192 | int rc = 0; | |
2193 | u8 status, ret, mi; | |
c46ee386 AAJ |
2194 | |
2195 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2196 | ||
b1e666f5 WR |
2197 | if (IS_ERR(resp)) { |
2198 | rc = PTR_ERR(resp); | |
2199 | goto _error; | |
c46ee386 AAJ |
2200 | } |
2201 | ||
b1e666f5 WR |
2202 | status = resp->data[0]; |
2203 | ret = status & PN533_CMD_RET_MASK; | |
2204 | mi = status & PN533_CMD_MI_MASK; | |
2205 | ||
2206 | skb_pull(resp, sizeof(status)); | |
c46ee386 | 2207 | |
b1e666f5 WR |
2208 | if (ret != PN533_CMD_RET_SUCCESS) { |
2209 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 2210 | "Exchanging data failed (error 0x%x)", ret); |
b1e666f5 | 2211 | rc = -EIO; |
c46ee386 AAJ |
2212 | goto error; |
2213 | } | |
2214 | ||
b1e666f5 | 2215 | skb_queue_tail(&dev->resp_q, resp); |
6ff73fd2 | 2216 | |
b1e666f5 WR |
2217 | if (mi) { |
2218 | dev->cmd_complete_mi_arg = arg; | |
6ff73fd2 SO |
2219 | queue_work(dev->wq, &dev->mi_work); |
2220 | return -EINPROGRESS; | |
c46ee386 AAJ |
2221 | } |
2222 | ||
6ff73fd2 | 2223 | skb = pn533_build_response(dev); |
b1e666f5 | 2224 | if (!skb) |
6ff73fd2 | 2225 | goto error; |
c46ee386 | 2226 | |
6ff73fd2 | 2227 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
2228 | kfree(arg); |
2229 | return 0; | |
2230 | ||
2231 | error: | |
b1e666f5 WR |
2232 | dev_kfree_skb(resp); |
2233 | _error: | |
6ff73fd2 | 2234 | skb_queue_purge(&dev->resp_q); |
b1e666f5 | 2235 | arg->cb(arg->cb_context, NULL, rc); |
c46ee386 | 2236 | kfree(arg); |
b1e666f5 | 2237 | return rc; |
c46ee386 AAJ |
2238 | } |
2239 | ||
be9ae4ce SO |
2240 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
2241 | struct nfc_target *target, struct sk_buff *skb, | |
2242 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
2243 | { |
2244 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
b1e666f5 | 2245 | struct pn533_data_exchange_arg *arg = NULL; |
c46ee386 AAJ |
2246 | int rc; |
2247 | ||
2248 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2249 | ||
b1e666f5 WR |
2250 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
2251 | /* TODO: Implement support to multi-part data exchange */ | |
2252 | nfc_dev_err(&dev->interface->dev, | |
2253 | "Data length greater than the max allowed: %d", | |
2254 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2255 | rc = -ENOSYS; | |
2256 | goto error; | |
2257 | } | |
2258 | ||
c46ee386 | 2259 | if (!dev->tgt_active_prot) { |
6ca55372 WR |
2260 | nfc_dev_err(&dev->interface->dev, |
2261 | "Can't exchange data if there is no active target"); | |
c46ee386 AAJ |
2262 | rc = -EINVAL; |
2263 | goto error; | |
2264 | } | |
2265 | ||
b1e666f5 | 2266 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
c46ee386 AAJ |
2267 | if (!arg) { |
2268 | rc = -ENOMEM; | |
b1e666f5 | 2269 | goto error; |
c46ee386 AAJ |
2270 | } |
2271 | ||
c46ee386 AAJ |
2272 | arg->cb = cb; |
2273 | arg->cb_context = cb_context; | |
2274 | ||
b1e666f5 WR |
2275 | switch (dev->device_type) { |
2276 | case PN533_DEVICE_PASORI: | |
2277 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2278 | rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU, | |
2279 | skb, | |
2280 | pn533_data_exchange_complete, | |
2281 | arg); | |
2282 | ||
2283 | break; | |
2284 | } | |
2285 | default: | |
2286 | *skb_push(skb, sizeof(u8)) = 1; /*TG*/ | |
2287 | ||
2288 | rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE, | |
2289 | skb, pn533_data_exchange_complete, | |
2290 | arg); | |
2291 | ||
2292 | break; | |
c46ee386 AAJ |
2293 | } |
2294 | ||
b1e666f5 WR |
2295 | if (rc < 0) /* rc from send_async */ |
2296 | goto error; | |
2297 | ||
c46ee386 AAJ |
2298 | return 0; |
2299 | ||
c46ee386 | 2300 | error: |
b1e666f5 WR |
2301 | kfree(arg); |
2302 | dev_kfree_skb(skb); | |
c46ee386 AAJ |
2303 | return rc; |
2304 | } | |
2305 | ||
dadb06f2 | 2306 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
e4878823 | 2307 | struct sk_buff *resp) |
dadb06f2 | 2308 | { |
e4878823 | 2309 | u8 status; |
5b412fd1 | 2310 | |
dadb06f2 SO |
2311 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2312 | ||
e4878823 WR |
2313 | if (IS_ERR(resp)) |
2314 | return PTR_ERR(resp); | |
5b412fd1 | 2315 | |
e4878823 | 2316 | status = resp->data[0]; |
dadb06f2 | 2317 | |
e4878823 | 2318 | dev_kfree_skb(resp); |
dadb06f2 | 2319 | |
e4878823 | 2320 | if (status != 0) { |
dadb06f2 SO |
2321 | nfc_tm_deactivated(dev->nfc_dev); |
2322 | ||
51ad304c SO |
2323 | dev->tgt_mode = 0; |
2324 | ||
dadb06f2 SO |
2325 | return 0; |
2326 | } | |
2327 | ||
2328 | queue_work(dev->wq, &dev->tg_work); | |
2329 | ||
2330 | return 0; | |
2331 | } | |
2332 | ||
2333 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2334 | { | |
2335 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
dadb06f2 SO |
2336 | int rc; |
2337 | ||
2338 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2339 | ||
e4878823 | 2340 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
dadb06f2 | 2341 | nfc_dev_err(&dev->interface->dev, |
e4878823 WR |
2342 | "Data length greater than the max allowed: %d", |
2343 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2344 | return -ENOSYS; | |
dadb06f2 SO |
2345 | } |
2346 | ||
e4878823 WR |
2347 | rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb, |
2348 | pn533_tm_send_complete, NULL); | |
2349 | if (rc < 0) | |
2350 | dev_kfree_skb(skb); | |
dadb06f2 SO |
2351 | |
2352 | return rc; | |
2353 | } | |
2354 | ||
6ff73fd2 SO |
2355 | static void pn533_wq_mi_recv(struct work_struct *work) |
2356 | { | |
2357 | struct pn533 *dev = container_of(work, struct pn533, mi_work); | |
b1e666f5 WR |
2358 | |
2359 | struct sk_buff *skb; | |
6ff73fd2 SO |
2360 | int rc; |
2361 | ||
2362 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2363 | ||
9e2d493e | 2364 | skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN); |
b1e666f5 WR |
2365 | if (!skb) |
2366 | goto error; | |
6ff73fd2 | 2367 | |
b1e666f5 WR |
2368 | switch (dev->device_type) { |
2369 | case PN533_DEVICE_PASORI: | |
2370 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2371 | rc = pn533_send_cmd_direct_async(dev, | |
2372 | PN533_CMD_IN_COMM_THRU, | |
2373 | skb, | |
2374 | pn533_data_exchange_complete, | |
2375 | dev->cmd_complete_mi_arg); | |
6ff73fd2 | 2376 | |
b1e666f5 WR |
2377 | break; |
2378 | } | |
2379 | default: | |
2380 | *skb_put(skb, sizeof(u8)) = 1; /*TG*/ | |
6ff73fd2 | 2381 | |
b1e666f5 WR |
2382 | rc = pn533_send_cmd_direct_async(dev, |
2383 | PN533_CMD_IN_DATA_EXCHANGE, | |
2384 | skb, | |
2385 | pn533_data_exchange_complete, | |
2386 | dev->cmd_complete_mi_arg); | |
b1bb290a | 2387 | |
b1e666f5 | 2388 | break; |
6ff73fd2 SO |
2389 | } |
2390 | ||
b1e666f5 | 2391 | if (rc == 0) /* success */ |
6ff73fd2 SO |
2392 | return; |
2393 | ||
b1e666f5 WR |
2394 | nfc_dev_err(&dev->interface->dev, |
2395 | "Error %d when trying to perform data_exchange", rc); | |
6ff73fd2 | 2396 | |
b1e666f5 | 2397 | dev_kfree_skb(skb); |
140ef7f6 | 2398 | kfree(dev->cmd_complete_mi_arg); |
6ff73fd2 | 2399 | |
b1e666f5 | 2400 | error: |
6ff73fd2 | 2401 | pn533_send_ack(dev, GFP_KERNEL); |
5d50b364 | 2402 | queue_work(dev->wq, &dev->cmd_work); |
6ff73fd2 SO |
2403 | } |
2404 | ||
c46ee386 AAJ |
2405 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2406 | u8 cfgdata_len) | |
2407 | { | |
cb950d93 WR |
2408 | struct sk_buff *skb; |
2409 | struct sk_buff *resp; | |
2410 | ||
2411 | int skb_len; | |
c46ee386 AAJ |
2412 | |
2413 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2414 | ||
cb950d93 | 2415 | skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */ |
c46ee386 | 2416 | |
9e2d493e | 2417 | skb = pn533_alloc_skb(dev, skb_len); |
cb950d93 WR |
2418 | if (!skb) |
2419 | return -ENOMEM; | |
c46ee386 | 2420 | |
cb950d93 WR |
2421 | *skb_put(skb, sizeof(cfgitem)) = cfgitem; |
2422 | memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len); | |
c46ee386 | 2423 | |
cb950d93 WR |
2424 | resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb); |
2425 | if (IS_ERR(resp)) | |
2426 | return PTR_ERR(resp); | |
c46ee386 | 2427 | |
cb950d93 WR |
2428 | dev_kfree_skb(resp); |
2429 | return 0; | |
2430 | } | |
2431 | ||
2432 | static int pn533_get_firmware_version(struct pn533 *dev, | |
2433 | struct pn533_fw_version *fv) | |
2434 | { | |
2435 | struct sk_buff *skb; | |
2436 | struct sk_buff *resp; | |
2437 | ||
9e2d493e | 2438 | skb = pn533_alloc_skb(dev, 0); |
cb950d93 WR |
2439 | if (!skb) |
2440 | return -ENOMEM; | |
2441 | ||
2442 | resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb); | |
2443 | if (IS_ERR(resp)) | |
2444 | return PTR_ERR(resp); | |
2445 | ||
2446 | fv->ic = resp->data[0]; | |
2447 | fv->ver = resp->data[1]; | |
2448 | fv->rev = resp->data[2]; | |
2449 | fv->support = resp->data[3]; | |
2450 | ||
2451 | dev_kfree_skb(resp); | |
2452 | return 0; | |
c46ee386 AAJ |
2453 | } |
2454 | ||
f75c2913 | 2455 | static int pn533_pasori_fw_reset(struct pn533 *dev) |
5c7b0531 | 2456 | { |
cb950d93 WR |
2457 | struct sk_buff *skb; |
2458 | struct sk_buff *resp; | |
5c7b0531 SO |
2459 | |
2460 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2461 | ||
9e2d493e | 2462 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
2463 | if (!skb) |
2464 | return -ENOMEM; | |
5c7b0531 | 2465 | |
cb950d93 | 2466 | *skb_put(skb, sizeof(u8)) = 0x1; |
5c7b0531 | 2467 | |
cb950d93 WR |
2468 | resp = pn533_send_cmd_sync(dev, 0x18, skb); |
2469 | if (IS_ERR(resp)) | |
2470 | return PTR_ERR(resp); | |
5c7b0531 | 2471 | |
cb950d93 | 2472 | dev_kfree_skb(resp); |
5c7b0531 | 2473 | |
94c5c156 | 2474 | return 0; |
5c7b0531 SO |
2475 | } |
2476 | ||
53cf4839 WR |
2477 | struct pn533_acr122_poweron_rdr_arg { |
2478 | int rc; | |
2479 | struct completion done; | |
2480 | }; | |
2481 | ||
2482 | static void pn533_acr122_poweron_rdr_resp(struct urb *urb) | |
2483 | { | |
2484 | struct pn533_acr122_poweron_rdr_arg *arg = urb->context; | |
2485 | ||
2486 | nfc_dev_dbg(&urb->dev->dev, "%s", __func__); | |
2487 | ||
2488 | print_hex_dump(KERN_ERR, "ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1, | |
2489 | urb->transfer_buffer, urb->transfer_buffer_length, | |
2490 | false); | |
2491 | ||
2492 | arg->rc = urb->status; | |
2493 | complete(&arg->done); | |
2494 | } | |
2495 | ||
2496 | static int pn533_acr122_poweron_rdr(struct pn533 *dev) | |
2497 | { | |
2498 | /* Power on th reader (CCID cmd) */ | |
2499 | u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON, | |
2500 | 0, 0, 0, 0, 0, 0, 3, 0, 0}; | |
2501 | u8 buf[255]; | |
2502 | int rc; | |
2503 | void *cntx; | |
2504 | struct pn533_acr122_poweron_rdr_arg arg; | |
2505 | ||
2506 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2507 | ||
2508 | init_completion(&arg.done); | |
2509 | cntx = dev->in_urb->context; /* backup context */ | |
2510 | ||
2511 | dev->in_urb->transfer_buffer = buf; | |
2512 | dev->in_urb->transfer_buffer_length = 255; | |
2513 | dev->in_urb->complete = pn533_acr122_poweron_rdr_resp; | |
2514 | dev->in_urb->context = &arg; | |
2515 | ||
2516 | dev->out_urb->transfer_buffer = cmd; | |
2517 | dev->out_urb->transfer_buffer_length = sizeof(cmd); | |
2518 | ||
2519 | print_hex_dump(KERN_ERR, "ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1, | |
2520 | cmd, sizeof(cmd), false); | |
2521 | ||
2522 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); | |
2523 | if (rc) { | |
2524 | nfc_dev_err(&dev->interface->dev, | |
2525 | "Reader power on cmd error %d", rc); | |
2526 | return rc; | |
2527 | } | |
2528 | ||
2529 | rc = usb_submit_urb(dev->in_urb, GFP_KERNEL); | |
2530 | if (rc) { | |
2531 | nfc_dev_err(&dev->interface->dev, | |
2532 | "Can't submit for reader power on cmd response %d", | |
2533 | rc); | |
2534 | return rc; | |
2535 | } | |
2536 | ||
2537 | wait_for_completion(&arg.done); | |
2538 | dev->in_urb->context = cntx; /* restore context */ | |
2539 | ||
2540 | return arg.rc; | |
2541 | } | |
2542 | ||
5c7b0531 | 2543 | static struct nfc_ops pn533_nfc_ops = { |
8b3fe7b5 IE |
2544 | .dev_up = NULL, |
2545 | .dev_down = NULL, | |
361f3cb7 SO |
2546 | .dep_link_up = pn533_dep_link_up, |
2547 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2548 | .start_poll = pn533_start_poll, |
2549 | .stop_poll = pn533_stop_poll, | |
2550 | .activate_target = pn533_activate_target, | |
2551 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2552 | .im_transceive = pn533_transceive, |
dadb06f2 | 2553 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2554 | }; |
2555 | ||
5c7b0531 SO |
2556 | static int pn533_setup(struct pn533 *dev) |
2557 | { | |
2558 | struct pn533_config_max_retries max_retries; | |
2559 | struct pn533_config_timing timing; | |
2560 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2561 | int rc; | |
2562 | ||
2563 | switch (dev->device_type) { | |
2564 | case PN533_DEVICE_STD: | |
2565 | max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS; | |
2566 | max_retries.mx_rty_psl = 2; | |
2567 | max_retries.mx_rty_passive_act = | |
2568 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2569 | ||
2570 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2571 | timing.atr_res_timeout = PN533_CONFIG_TIMING_204; | |
2572 | timing.dep_timeout = PN533_CONFIG_TIMING_409; | |
2573 | ||
2574 | break; | |
2575 | ||
2576 | case PN533_DEVICE_PASORI: | |
53cf4839 | 2577 | case PN533_DEVICE_ACR122U: |
5c7b0531 SO |
2578 | max_retries.mx_rty_atr = 0x2; |
2579 | max_retries.mx_rty_psl = 0x1; | |
2580 | max_retries.mx_rty_passive_act = | |
2581 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2582 | ||
2583 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2584 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2585 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2586 | ||
2587 | break; | |
2588 | ||
2589 | default: | |
2590 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2591 | dev->device_type); | |
2592 | return -EINVAL; | |
2593 | } | |
2594 | ||
2595 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2596 | (u8 *)&max_retries, sizeof(max_retries)); | |
2597 | if (rc) { | |
2598 | nfc_dev_err(&dev->interface->dev, | |
2599 | "Error on setting MAX_RETRIES config"); | |
2600 | return rc; | |
2601 | } | |
2602 | ||
2603 | ||
2604 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2605 | (u8 *)&timing, sizeof(timing)); | |
2606 | if (rc) { | |
2607 | nfc_dev_err(&dev->interface->dev, | |
2608 | "Error on setting RF timings"); | |
2609 | return rc; | |
2610 | } | |
2611 | ||
2612 | switch (dev->device_type) { | |
2613 | case PN533_DEVICE_STD: | |
2614 | break; | |
2615 | ||
2616 | case PN533_DEVICE_PASORI: | |
f75c2913 | 2617 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2618 | |
2619 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2620 | pasori_cfg, 3); | |
2621 | if (rc) { | |
2622 | nfc_dev_err(&dev->interface->dev, | |
2623 | "Error while settings PASORI config"); | |
2624 | return rc; | |
2625 | } | |
2626 | ||
f75c2913 | 2627 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2628 | |
2629 | break; | |
2630 | } | |
2631 | ||
2632 | return 0; | |
2633 | } | |
2634 | ||
c46ee386 AAJ |
2635 | static int pn533_probe(struct usb_interface *interface, |
2636 | const struct usb_device_id *id) | |
2637 | { | |
cb950d93 | 2638 | struct pn533_fw_version fw_ver; |
c46ee386 AAJ |
2639 | struct pn533 *dev; |
2640 | struct usb_host_interface *iface_desc; | |
2641 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2642 | int in_endpoint = 0; |
2643 | int out_endpoint = 0; | |
2644 | int rc = -ENOMEM; | |
2645 | int i; | |
2646 | u32 protocols; | |
2647 | ||
2648 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2649 | if (!dev) | |
2650 | return -ENOMEM; | |
2651 | ||
2652 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2653 | dev->interface = interface; | |
0201ed03 | 2654 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2655 | |
2656 | iface_desc = interface->cur_altsetting; | |
2657 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2658 | endpoint = &iface_desc->endpoint[i].desc; | |
2659 | ||
8d25ca79 | 2660 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) |
c46ee386 | 2661 | in_endpoint = endpoint->bEndpointAddress; |
c46ee386 | 2662 | |
8d25ca79 | 2663 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) |
c46ee386 | 2664 | out_endpoint = endpoint->bEndpointAddress; |
c46ee386 AAJ |
2665 | } |
2666 | ||
2667 | if (!in_endpoint || !out_endpoint) { | |
6ca55372 WR |
2668 | nfc_dev_err(&interface->dev, |
2669 | "Could not find bulk-in or bulk-out endpoint"); | |
c46ee386 AAJ |
2670 | rc = -ENODEV; |
2671 | goto error; | |
2672 | } | |
2673 | ||
c46ee386 | 2674 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); |
c46ee386 AAJ |
2675 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); |
2676 | ||
a5798094 | 2677 | if (!dev->in_urb || !dev->out_urb) |
c46ee386 AAJ |
2678 | goto error; |
2679 | ||
2680 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
5d467742 WR |
2681 | usb_rcvbulkpipe(dev->udev, in_endpoint), |
2682 | NULL, 0, NULL, dev); | |
c46ee386 | 2683 | usb_fill_bulk_urb(dev->out_urb, dev->udev, |
5d467742 WR |
2684 | usb_sndbulkpipe(dev->udev, out_endpoint), |
2685 | NULL, 0, pn533_send_complete, dev); | |
c46ee386 | 2686 | |
5d50b364 SO |
2687 | INIT_WORK(&dev->cmd_work, pn533_wq_cmd); |
2688 | INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete); | |
6ff73fd2 | 2689 | INIT_WORK(&dev->mi_work, pn533_wq_mi_recv); |
103b34cf | 2690 | INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); |
6fbbdc16 | 2691 | INIT_WORK(&dev->poll_work, pn533_wq_poll); |
58637c9b | 2692 | dev->wq = alloc_ordered_workqueue("pn533", 0); |
4849f85e SO |
2693 | if (dev->wq == NULL) |
2694 | goto error; | |
c46ee386 | 2695 | |
6fbbdc16 SO |
2696 | init_timer(&dev->listen_timer); |
2697 | dev->listen_timer.data = (unsigned long) dev; | |
2698 | dev->listen_timer.function = pn533_listen_mode_timer; | |
2699 | ||
6ff73fd2 SO |
2700 | skb_queue_head_init(&dev->resp_q); |
2701 | ||
5d50b364 SO |
2702 | INIT_LIST_HEAD(&dev->cmd_queue); |
2703 | ||
c46ee386 AAJ |
2704 | usb_set_intfdata(interface, dev); |
2705 | ||
9e2d493e | 2706 | dev->ops = &pn533_std_frame_ops; |
c46ee386 | 2707 | |
58520373 | 2708 | dev->protocol_type = PN533_PROTO_REQ_ACK_RESP; |
5c7b0531 SO |
2709 | dev->device_type = id->driver_info; |
2710 | switch (dev->device_type) { | |
2711 | case PN533_DEVICE_STD: | |
2712 | protocols = PN533_ALL_PROTOCOLS; | |
2713 | break; | |
2714 | ||
2715 | case PN533_DEVICE_PASORI: | |
2716 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2717 | break; | |
2718 | ||
53cf4839 WR |
2719 | case PN533_DEVICE_ACR122U: |
2720 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2721 | dev->ops = &pn533_acr122_frame_ops; | |
2722 | dev->protocol_type = PN533_PROTO_REQ_RESP, | |
2723 | ||
2724 | rc = pn533_acr122_poweron_rdr(dev); | |
2725 | if (rc < 0) { | |
2726 | nfc_dev_err(&dev->interface->dev, | |
2727 | "Couldn't poweron the reader (error %d)", | |
2728 | rc); | |
2729 | goto destroy_wq; | |
2730 | } | |
2731 | break; | |
2732 | ||
5c7b0531 SO |
2733 | default: |
2734 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2735 | dev->device_type); | |
2736 | rc = -EINVAL; | |
2737 | goto destroy_wq; | |
2738 | } | |
c46ee386 | 2739 | |
9e2d493e WR |
2740 | memset(&fw_ver, 0, sizeof(fw_ver)); |
2741 | rc = pn533_get_firmware_version(dev, &fw_ver); | |
2742 | if (rc < 0) | |
2743 | goto destroy_wq; | |
2744 | ||
2745 | nfc_dev_info(&dev->interface->dev, | |
2746 | "NXP PN533 firmware ver %d.%d now attached", | |
2747 | fw_ver.ver, fw_ver.rev); | |
2748 | ||
2749 | ||
e8753043 | 2750 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
390a1bd8 | 2751 | NFC_SE_NONE, |
9e2d493e | 2752 | dev->ops->tx_header_len + |
e8753043 | 2753 | PN533_CMD_DATAEXCH_HEAD_LEN, |
9e2d493e | 2754 | dev->ops->tx_tail_len); |
c46ee386 | 2755 | if (!dev->nfc_dev) |
4849f85e | 2756 | goto destroy_wq; |
c46ee386 AAJ |
2757 | |
2758 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2759 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2760 | ||
2761 | rc = nfc_register_device(dev->nfc_dev); | |
2762 | if (rc) | |
2763 | goto free_nfc_dev; | |
2764 | ||
5c7b0531 SO |
2765 | rc = pn533_setup(dev); |
2766 | if (rc) | |
34a85bfc | 2767 | goto unregister_nfc_dev; |
34a85bfc | 2768 | |
c46ee386 AAJ |
2769 | return 0; |
2770 | ||
9f2f8ba1 SO |
2771 | unregister_nfc_dev: |
2772 | nfc_unregister_device(dev->nfc_dev); | |
2773 | ||
c46ee386 AAJ |
2774 | free_nfc_dev: |
2775 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2776 | |
4849f85e SO |
2777 | destroy_wq: |
2778 | destroy_workqueue(dev->wq); | |
c46ee386 | 2779 | error: |
c46ee386 | 2780 | usb_free_urb(dev->in_urb); |
c46ee386 AAJ |
2781 | usb_free_urb(dev->out_urb); |
2782 | kfree(dev); | |
2783 | return rc; | |
2784 | } | |
2785 | ||
2786 | static void pn533_disconnect(struct usb_interface *interface) | |
2787 | { | |
2788 | struct pn533 *dev; | |
5d50b364 | 2789 | struct pn533_cmd *cmd, *n; |
c46ee386 AAJ |
2790 | |
2791 | dev = usb_get_intfdata(interface); | |
2792 | usb_set_intfdata(interface, NULL); | |
2793 | ||
2794 | nfc_unregister_device(dev->nfc_dev); | |
2795 | nfc_free_device(dev->nfc_dev); | |
2796 | ||
2797 | usb_kill_urb(dev->in_urb); | |
2798 | usb_kill_urb(dev->out_urb); | |
2799 | ||
4849f85e | 2800 | destroy_workqueue(dev->wq); |
c46ee386 | 2801 | |
6ff73fd2 SO |
2802 | skb_queue_purge(&dev->resp_q); |
2803 | ||
6fbbdc16 SO |
2804 | del_timer(&dev->listen_timer); |
2805 | ||
5d50b364 SO |
2806 | list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { |
2807 | list_del(&cmd->queue); | |
2808 | kfree(cmd); | |
2809 | } | |
2810 | ||
c46ee386 | 2811 | usb_free_urb(dev->in_urb); |
c46ee386 AAJ |
2812 | usb_free_urb(dev->out_urb); |
2813 | kfree(dev); | |
2814 | ||
276556db | 2815 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2816 | } |
2817 | ||
2818 | static struct usb_driver pn533_driver = { | |
2819 | .name = "pn533", | |
2820 | .probe = pn533_probe, | |
2821 | .disconnect = pn533_disconnect, | |
2822 | .id_table = pn533_table, | |
2823 | }; | |
2824 | ||
fe748483 | 2825 | module_usb_driver(pn533_driver); |
c46ee386 | 2826 | |
e70b96e9 WR |
2827 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); |
2828 | MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2829 | MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>"); | |
c46ee386 AAJ |
2830 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); |
2831 | MODULE_VERSION(VERSION); | |
2832 | MODULE_LICENSE("GPL"); |