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c46ee386 AAJ |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
e70b96e9 | 3 | * Copyright (C) 2012-2013 Tieto Poland |
c46ee386 AAJ |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
13 | * GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the | |
17 | * Free Software Foundation, Inc., | |
18 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
19 | */ | |
20 | ||
21 | #include <linux/device.h> | |
22 | #include <linux/kernel.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/slab.h> | |
25 | #include <linux/usb.h> | |
26 | #include <linux/nfc.h> | |
27 | #include <linux/netdevice.h> | |
55eb94f9 | 28 | #include <net/nfc/nfc.h> |
c46ee386 AAJ |
29 | |
30 | #define VERSION "0.1" | |
31 | ||
32 | #define PN533_VENDOR_ID 0x4CC | |
33 | #define PN533_PRODUCT_ID 0x2533 | |
34 | ||
35 | #define SCM_VENDOR_ID 0x4E6 | |
36 | #define SCL3711_PRODUCT_ID 0x5591 | |
37 | ||
5c7b0531 SO |
38 | #define SONY_VENDOR_ID 0x054c |
39 | #define PASORI_PRODUCT_ID 0x02e1 | |
40 | ||
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 | ||
0c33d262 | 152 | typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, int status); |
c46ee386 | 153 | |
aada17ac WR |
154 | typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg, |
155 | struct sk_buff *resp); | |
156 | ||
c46ee386 AAJ |
157 | /* structs for pn533 commands */ |
158 | ||
159 | /* PN533_CMD_GET_FIRMWARE_VERSION */ | |
160 | struct pn533_fw_version { | |
161 | u8 ic; | |
162 | u8 ver; | |
163 | u8 rev; | |
164 | u8 support; | |
165 | }; | |
166 | ||
167 | /* PN533_CMD_RF_CONFIGURATION */ | |
34a85bfc | 168 | #define PN533_CFGITEM_TIMING 0x02 |
c46ee386 | 169 | #define PN533_CFGITEM_MAX_RETRIES 0x05 |
5c7b0531 | 170 | #define PN533_CFGITEM_PASORI 0x82 |
c46ee386 | 171 | |
34a85bfc SO |
172 | #define PN533_CONFIG_TIMING_102 0xb |
173 | #define PN533_CONFIG_TIMING_204 0xc | |
174 | #define PN533_CONFIG_TIMING_409 0xd | |
175 | #define PN533_CONFIG_TIMING_819 0xe | |
176 | ||
c46ee386 AAJ |
177 | #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 |
178 | #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF | |
179 | ||
180 | struct pn533_config_max_retries { | |
181 | u8 mx_rty_atr; | |
182 | u8 mx_rty_psl; | |
183 | u8 mx_rty_passive_act; | |
184 | } __packed; | |
185 | ||
34a85bfc SO |
186 | struct pn533_config_timing { |
187 | u8 rfu; | |
188 | u8 atr_res_timeout; | |
189 | u8 dep_timeout; | |
190 | } __packed; | |
191 | ||
c46ee386 AAJ |
192 | /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ |
193 | ||
194 | /* felica commands opcode */ | |
195 | #define PN533_FELICA_OPC_SENSF_REQ 0 | |
196 | #define PN533_FELICA_OPC_SENSF_RES 1 | |
197 | /* felica SENSF_REQ parameters */ | |
198 | #define PN533_FELICA_SENSF_SC_ALL 0xFFFF | |
199 | #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 | |
200 | #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 | |
201 | #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 | |
202 | ||
203 | /* type B initiator_data values */ | |
204 | #define PN533_TYPE_B_AFI_ALL_FAMILIES 0 | |
205 | #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 | |
206 | #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 | |
207 | ||
208 | union pn533_cmd_poll_initdata { | |
209 | struct { | |
210 | u8 afi; | |
211 | u8 polling_method; | |
212 | } __packed type_b; | |
213 | struct { | |
214 | u8 opcode; | |
215 | __be16 sc; | |
216 | u8 rc; | |
217 | u8 tsn; | |
218 | } __packed felica; | |
219 | }; | |
220 | ||
221 | /* Poll modulations */ | |
222 | enum { | |
223 | PN533_POLL_MOD_106KBPS_A, | |
224 | PN533_POLL_MOD_212KBPS_FELICA, | |
225 | PN533_POLL_MOD_424KBPS_FELICA, | |
226 | PN533_POLL_MOD_106KBPS_JEWEL, | |
227 | PN533_POLL_MOD_847KBPS_B, | |
6fbbdc16 | 228 | PN533_LISTEN_MOD, |
c46ee386 AAJ |
229 | |
230 | __PN533_POLL_MOD_AFTER_LAST, | |
231 | }; | |
232 | #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) | |
233 | ||
234 | struct pn533_poll_modulations { | |
235 | struct { | |
236 | u8 maxtg; | |
237 | u8 brty; | |
238 | union pn533_cmd_poll_initdata initiator_data; | |
239 | } __packed data; | |
240 | u8 len; | |
241 | }; | |
242 | ||
ef3d56e1 | 243 | static const struct pn533_poll_modulations poll_mod[] = { |
c46ee386 AAJ |
244 | [PN533_POLL_MOD_106KBPS_A] = { |
245 | .data = { | |
246 | .maxtg = 1, | |
247 | .brty = 0, | |
248 | }, | |
249 | .len = 2, | |
250 | }, | |
251 | [PN533_POLL_MOD_212KBPS_FELICA] = { | |
252 | .data = { | |
253 | .maxtg = 1, | |
254 | .brty = 1, | |
255 | .initiator_data.felica = { | |
256 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
257 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
258 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
259 | .tsn = 0, | |
260 | }, | |
261 | }, | |
262 | .len = 7, | |
263 | }, | |
264 | [PN533_POLL_MOD_424KBPS_FELICA] = { | |
265 | .data = { | |
266 | .maxtg = 1, | |
267 | .brty = 2, | |
268 | .initiator_data.felica = { | |
269 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
270 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
271 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
272 | .tsn = 0, | |
273 | }, | |
274 | }, | |
275 | .len = 7, | |
276 | }, | |
277 | [PN533_POLL_MOD_106KBPS_JEWEL] = { | |
278 | .data = { | |
279 | .maxtg = 1, | |
280 | .brty = 4, | |
281 | }, | |
282 | .len = 2, | |
283 | }, | |
284 | [PN533_POLL_MOD_847KBPS_B] = { | |
285 | .data = { | |
286 | .maxtg = 1, | |
287 | .brty = 8, | |
288 | .initiator_data.type_b = { | |
289 | .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, | |
290 | .polling_method = | |
291 | PN533_TYPE_B_POLL_METHOD_TIMESLOT, | |
292 | }, | |
293 | }, | |
294 | .len = 3, | |
295 | }, | |
6fbbdc16 SO |
296 | [PN533_LISTEN_MOD] = { |
297 | .len = 0, | |
298 | }, | |
c46ee386 AAJ |
299 | }; |
300 | ||
301 | /* PN533_CMD_IN_ATR */ | |
302 | ||
c46ee386 AAJ |
303 | struct pn533_cmd_activate_response { |
304 | u8 status; | |
305 | u8 nfcid3t[10]; | |
306 | u8 didt; | |
307 | u8 bst; | |
308 | u8 brt; | |
309 | u8 to; | |
310 | u8 ppt; | |
311 | /* optional */ | |
312 | u8 gt[]; | |
313 | } __packed; | |
314 | ||
361f3cb7 SO |
315 | struct pn533_cmd_jump_dep_response { |
316 | u8 status; | |
317 | u8 tg; | |
318 | u8 nfcid3t[10]; | |
319 | u8 didt; | |
320 | u8 bst; | |
321 | u8 brt; | |
322 | u8 to; | |
323 | u8 ppt; | |
324 | /* optional */ | |
325 | u8 gt[]; | |
326 | } __packed; | |
c46ee386 | 327 | |
ad3823ce SO |
328 | |
329 | /* PN533_TG_INIT_AS_TARGET */ | |
330 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
331 | #define PN533_INIT_TARGET_DEP 0x2 | |
332 | ||
fc40a8c1 SO |
333 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
334 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
335 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
336 | ||
58520373 WR |
337 | enum pn533_protocol_type { |
338 | PN533_PROTO_REQ_ACK_RESP = 0, | |
339 | PN533_PROTO_REQ_RESP | |
340 | }; | |
341 | ||
c46ee386 AAJ |
342 | struct pn533 { |
343 | struct usb_device *udev; | |
344 | struct usb_interface *interface; | |
345 | struct nfc_dev *nfc_dev; | |
d5590bba | 346 | u32 device_type; |
58520373 | 347 | enum pn533_protocol_type protocol_type; |
c46ee386 AAJ |
348 | |
349 | struct urb *out_urb; | |
c46ee386 | 350 | struct urb *in_urb; |
c46ee386 | 351 | |
6ff73fd2 SO |
352 | struct sk_buff_head resp_q; |
353 | ||
4849f85e SO |
354 | struct workqueue_struct *wq; |
355 | struct work_struct cmd_work; | |
5d50b364 | 356 | struct work_struct cmd_complete_work; |
6fbbdc16 | 357 | struct work_struct poll_work; |
6ff73fd2 | 358 | struct work_struct mi_work; |
103b34cf | 359 | struct work_struct tg_work; |
d5590bba WR |
360 | |
361 | struct list_head cmd_queue; | |
362 | struct pn533_cmd *cmd; | |
363 | u8 cmd_pending; | |
d5590bba | 364 | struct mutex cmd_lock; /* protects cmd queue */ |
c46ee386 | 365 | |
b1e666f5 | 366 | void *cmd_complete_mi_arg; |
c46ee386 AAJ |
367 | |
368 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
369 | u8 poll_mod_count; | |
370 | u8 poll_mod_curr; | |
371 | u32 poll_protocols; | |
6fbbdc16 | 372 | u32 listen_protocols; |
d5590bba WR |
373 | struct timer_list listen_timer; |
374 | int cancel_listen; | |
6fbbdc16 SO |
375 | |
376 | u8 *gb; | |
377 | size_t gb_len; | |
c46ee386 AAJ |
378 | |
379 | u8 tgt_available_prots; | |
380 | u8 tgt_active_prot; | |
51ad304c | 381 | u8 tgt_mode; |
5c7b0531 | 382 | |
9e2d493e | 383 | struct pn533_frame_ops *ops; |
5d50b364 SO |
384 | }; |
385 | ||
386 | struct pn533_cmd { | |
387 | struct list_head queue; | |
4b2a9532 | 388 | u8 code; |
f87bc9fb | 389 | int status; |
aada17ac WR |
390 | struct sk_buff *req; |
391 | struct sk_buff *resp; | |
9e2d493e | 392 | int resp_len; |
4231604b WR |
393 | pn533_send_async_complete_t complete_cb; |
394 | void *complete_cb_context; | |
c46ee386 AAJ |
395 | }; |
396 | ||
63123108 | 397 | struct pn533_std_frame { |
c46ee386 AAJ |
398 | u8 preamble; |
399 | __be16 start_frame; | |
400 | u8 datalen; | |
401 | u8 datalen_checksum; | |
402 | u8 data[]; | |
403 | } __packed; | |
404 | ||
9e2d493e WR |
405 | struct pn533_frame_ops { |
406 | void (*tx_frame_init)(void *frame, u8 cmd_code); | |
407 | void (*tx_frame_finish)(void *frame); | |
408 | void (*tx_update_payload_len)(void *frame, int len); | |
409 | int tx_header_len; | |
410 | int tx_tail_len; | |
411 | ||
412 | bool (*rx_is_frame_valid)(void *frame); | |
413 | int (*rx_frame_size)(void *frame); | |
414 | int rx_header_len; | |
415 | int rx_tail_len; | |
416 | ||
417 | int max_payload_len; | |
418 | u8 (*get_cmd_code)(void *frame); | |
419 | }; | |
420 | ||
53cf4839 WR |
421 | struct pn533_acr122_ccid_hdr { |
422 | u8 type; | |
423 | u32 datalen; | |
424 | u8 slot; | |
425 | u8 seq; | |
426 | u8 params[3]; /* 3 msg specific bytes or status, error and 1 specific | |
427 | byte for reposnse msg */ | |
428 | u8 data[]; /* payload */ | |
429 | } __packed; | |
430 | ||
431 | struct pn533_acr122_apdu_hdr { | |
432 | u8 class; | |
433 | u8 ins; | |
434 | u8 p1; | |
435 | u8 p2; | |
436 | } __packed; | |
437 | ||
438 | struct pn533_acr122_tx_frame { | |
439 | struct pn533_acr122_ccid_hdr ccid; | |
440 | struct pn533_acr122_apdu_hdr apdu; | |
441 | u8 datalen; | |
442 | u8 data[]; /* pn533 frame: TFI ... */ | |
443 | } __packed; | |
444 | ||
445 | struct pn533_acr122_rx_frame { | |
446 | struct pn533_acr122_ccid_hdr ccid; | |
447 | u8 data[]; /* pn533 frame : TFI ... */ | |
448 | } __packed; | |
449 | ||
450 | static void pn533_acr122_tx_frame_init(void *_frame, u8 cmd_code) | |
451 | { | |
452 | struct pn533_acr122_tx_frame *frame = _frame; | |
453 | ||
454 | frame->ccid.type = PN533_ACR122_PC_TO_RDR_ESCAPE; | |
455 | frame->ccid.datalen = sizeof(frame->apdu) + 1; /* sizeof(apdu_hdr) + | |
456 | sizeof(datalen) */ | |
457 | frame->ccid.slot = 0; | |
458 | frame->ccid.seq = 0; | |
459 | frame->ccid.params[0] = 0; | |
460 | frame->ccid.params[1] = 0; | |
461 | frame->ccid.params[2] = 0; | |
462 | ||
463 | frame->data[0] = PN533_STD_FRAME_DIR_OUT; | |
464 | frame->data[1] = cmd_code; | |
465 | frame->datalen = 2; /* data[0] + data[1] */ | |
466 | ||
467 | frame->apdu.class = 0xFF; | |
468 | frame->apdu.ins = 0; | |
469 | frame->apdu.p1 = 0; | |
470 | frame->apdu.p2 = 0; | |
471 | } | |
472 | ||
473 | static void pn533_acr122_tx_frame_finish(void *_frame) | |
474 | { | |
475 | struct pn533_acr122_tx_frame *frame = _frame; | |
476 | ||
477 | frame->ccid.datalen += frame->datalen; | |
478 | } | |
479 | ||
480 | static void pn533_acr122_tx_update_payload_len(void *_frame, int len) | |
481 | { | |
482 | struct pn533_acr122_tx_frame *frame = _frame; | |
483 | ||
484 | frame->datalen += len; | |
485 | } | |
486 | ||
487 | static bool pn533_acr122_is_rx_frame_valid(void *_frame) | |
488 | { | |
489 | struct pn533_acr122_rx_frame *frame = _frame; | |
490 | ||
491 | if (frame->ccid.type != 0x83) | |
492 | return false; | |
493 | ||
494 | if (frame->data[frame->ccid.datalen - 2] == 0x63) | |
495 | return false; | |
496 | ||
497 | return true; | |
498 | } | |
499 | ||
500 | static int pn533_acr122_rx_frame_size(void *frame) | |
501 | { | |
502 | struct pn533_acr122_rx_frame *f = frame; | |
503 | ||
504 | /* f->ccid.datalen already includes tail length */ | |
505 | return sizeof(struct pn533_acr122_rx_frame) + f->ccid.datalen; | |
506 | } | |
507 | ||
508 | static u8 pn533_acr122_get_cmd_code(void *frame) | |
509 | { | |
510 | struct pn533_acr122_rx_frame *f = frame; | |
511 | ||
512 | return PN533_STD_FRAME_CMD(f); | |
513 | } | |
514 | ||
515 | static struct pn533_frame_ops pn533_acr122_frame_ops = { | |
516 | .tx_frame_init = pn533_acr122_tx_frame_init, | |
517 | .tx_frame_finish = pn533_acr122_tx_frame_finish, | |
518 | .tx_update_payload_len = pn533_acr122_tx_update_payload_len, | |
519 | .tx_header_len = PN533_ACR122_TX_FRAME_HEADER_LEN, | |
520 | .tx_tail_len = PN533_ACR122_TX_FRAME_TAIL_LEN, | |
521 | ||
522 | .rx_is_frame_valid = pn533_acr122_is_rx_frame_valid, | |
523 | .rx_header_len = PN533_ACR122_RX_FRAME_HEADER_LEN, | |
524 | .rx_tail_len = PN533_ACR122_RX_FRAME_TAIL_LEN, | |
525 | .rx_frame_size = pn533_acr122_rx_frame_size, | |
526 | ||
527 | .max_payload_len = PN533_ACR122_FRAME_MAX_PAYLOAD_LEN, | |
528 | .get_cmd_code = pn533_acr122_get_cmd_code, | |
529 | }; | |
530 | ||
c46ee386 | 531 | /* The rule: value + checksum = 0 */ |
63123108 | 532 | static inline u8 pn533_std_checksum(u8 value) |
c46ee386 AAJ |
533 | { |
534 | return ~value + 1; | |
535 | } | |
536 | ||
537 | /* The rule: sum(data elements) + checksum = 0 */ | |
63123108 | 538 | static u8 pn533_std_data_checksum(u8 *data, int datalen) |
c46ee386 AAJ |
539 | { |
540 | u8 sum = 0; | |
541 | int i; | |
542 | ||
543 | for (i = 0; i < datalen; i++) | |
544 | sum += data[i]; | |
545 | ||
63123108 | 546 | return pn533_std_checksum(sum); |
c46ee386 AAJ |
547 | } |
548 | ||
63123108 | 549 | static void pn533_std_tx_frame_init(void *_frame, u8 cmd_code) |
c46ee386 | 550 | { |
63123108 | 551 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 552 | |
c46ee386 | 553 | frame->preamble = 0; |
63123108 WR |
554 | frame->start_frame = cpu_to_be16(PN533_STD_FRAME_SOF); |
555 | PN533_STD_FRAME_IDENTIFIER(frame) = PN533_STD_FRAME_DIR_OUT; | |
556 | PN533_STD_FRAME_CMD(frame) = cmd_code; | |
c46ee386 AAJ |
557 | frame->datalen = 2; |
558 | } | |
559 | ||
63123108 | 560 | static void pn533_std_tx_frame_finish(void *_frame) |
c46ee386 | 561 | { |
63123108 | 562 | struct pn533_std_frame *frame = _frame; |
9e2d493e | 563 | |
63123108 | 564 | frame->datalen_checksum = pn533_std_checksum(frame->datalen); |
c46ee386 | 565 | |
63123108 WR |
566 | PN533_STD_FRAME_CHECKSUM(frame) = |
567 | pn533_std_data_checksum(frame->data, frame->datalen); | |
c46ee386 | 568 | |
63123108 | 569 | PN533_STD_FRAME_POSTAMBLE(frame) = 0; |
c46ee386 AAJ |
570 | } |
571 | ||
63123108 | 572 | static void pn533_std_tx_update_payload_len(void *_frame, int len) |
9e2d493e | 573 | { |
63123108 | 574 | struct pn533_std_frame *frame = _frame; |
9e2d493e WR |
575 | |
576 | frame->datalen += len; | |
577 | } | |
578 | ||
63123108 | 579 | static bool pn533_std_rx_frame_is_valid(void *_frame) |
c46ee386 AAJ |
580 | { |
581 | u8 checksum; | |
63123108 | 582 | struct pn533_std_frame *frame = _frame; |
c46ee386 | 583 | |
63123108 | 584 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
585 | return false; |
586 | ||
63123108 | 587 | checksum = pn533_std_checksum(frame->datalen); |
c46ee386 AAJ |
588 | if (checksum != frame->datalen_checksum) |
589 | return false; | |
590 | ||
63123108 WR |
591 | checksum = pn533_std_data_checksum(frame->data, frame->datalen); |
592 | if (checksum != PN533_STD_FRAME_CHECKSUM(frame)) | |
c46ee386 AAJ |
593 | return false; |
594 | ||
595 | return true; | |
596 | } | |
597 | ||
63123108 | 598 | static bool pn533_std_rx_frame_is_ack(struct pn533_std_frame *frame) |
c46ee386 | 599 | { |
63123108 | 600 | if (frame->start_frame != cpu_to_be16(PN533_STD_FRAME_SOF)) |
c46ee386 AAJ |
601 | return false; |
602 | ||
603 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
604 | return false; | |
605 | ||
606 | return true; | |
607 | } | |
608 | ||
63123108 | 609 | static inline int pn533_std_rx_frame_size(void *frame) |
9e2d493e | 610 | { |
63123108 | 611 | struct pn533_std_frame *f = frame; |
9e2d493e | 612 | |
63123108 WR |
613 | return sizeof(struct pn533_std_frame) + f->datalen + |
614 | PN533_STD_FRAME_TAIL_LEN; | |
9e2d493e WR |
615 | } |
616 | ||
63123108 | 617 | static u8 pn533_std_get_cmd_code(void *frame) |
9e2d493e | 618 | { |
63123108 | 619 | struct pn533_std_frame *f = frame; |
9e2d493e | 620 | |
63123108 | 621 | return PN533_STD_FRAME_CMD(f); |
9e2d493e WR |
622 | } |
623 | ||
ef3d56e1 | 624 | static struct pn533_frame_ops pn533_std_frame_ops = { |
63123108 WR |
625 | .tx_frame_init = pn533_std_tx_frame_init, |
626 | .tx_frame_finish = pn533_std_tx_frame_finish, | |
627 | .tx_update_payload_len = pn533_std_tx_update_payload_len, | |
628 | .tx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
629 | .tx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
630 | ||
631 | .rx_is_frame_valid = pn533_std_rx_frame_is_valid, | |
632 | .rx_frame_size = pn533_std_rx_frame_size, | |
633 | .rx_header_len = PN533_STD_FRAME_HEADER_LEN, | |
634 | .rx_tail_len = PN533_STD_FRAME_TAIL_LEN, | |
635 | ||
636 | .max_payload_len = PN533_STD_FRAME_MAX_PAYLOAD_LEN, | |
637 | .get_cmd_code = pn533_std_get_cmd_code, | |
9e2d493e WR |
638 | }; |
639 | ||
640 | static bool pn533_rx_frame_is_cmd_response(struct pn533 *dev, void *frame) | |
c46ee386 | 641 | { |
2c206fb7 | 642 | return (dev->ops->get_cmd_code(frame) == |
4b2a9532 | 643 | PN533_CMD_RESPONSE(dev->cmd->code)); |
c46ee386 AAJ |
644 | } |
645 | ||
c46ee386 AAJ |
646 | static void pn533_recv_response(struct urb *urb) |
647 | { | |
648 | struct pn533 *dev = urb->context; | |
f87bc9fb | 649 | struct pn533_cmd *cmd = dev->cmd; |
9e2d493e | 650 | u8 *in_frame; |
c46ee386 | 651 | |
f87bc9fb WR |
652 | cmd->status = urb->status; |
653 | ||
c46ee386 AAJ |
654 | switch (urb->status) { |
655 | case 0: | |
f8f99171 | 656 | break; /* success */ |
c46ee386 AAJ |
657 | case -ECONNRESET: |
658 | case -ENOENT: | |
6ca55372 | 659 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
660 | "The urb has been canceled (status %d)", |
661 | urb->status); | |
4849f85e | 662 | goto sched_wq; |
f8f99171 | 663 | case -ESHUTDOWN: |
c46ee386 | 664 | default: |
6ca55372 | 665 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 666 | "Urb failure (status %d)", urb->status); |
4849f85e | 667 | goto sched_wq; |
c46ee386 AAJ |
668 | } |
669 | ||
670 | in_frame = dev->in_urb->transfer_buffer; | |
671 | ||
fcfafc76 | 672 | nfc_dev_dbg(&dev->interface->dev, "Received a frame."); |
e279f84f SO |
673 | print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame, |
674 | dev->ops->rx_frame_size(in_frame), false); | |
99e591be | 675 | |
9e2d493e | 676 | if (!dev->ops->rx_is_frame_valid(in_frame)) { |
c46ee386 | 677 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); |
f87bc9fb | 678 | cmd->status = -EIO; |
4849f85e | 679 | goto sched_wq; |
c46ee386 AAJ |
680 | } |
681 | ||
9e2d493e | 682 | if (!pn533_rx_frame_is_cmd_response(dev, in_frame)) { |
6ca55372 WR |
683 | nfc_dev_err(&dev->interface->dev, |
684 | "It it not the response to the last command"); | |
f87bc9fb | 685 | cmd->status = -EIO; |
4849f85e | 686 | goto sched_wq; |
c46ee386 AAJ |
687 | } |
688 | ||
4849f85e | 689 | sched_wq: |
5d50b364 | 690 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
691 | } |
692 | ||
693 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
694 | { | |
695 | dev->in_urb->complete = pn533_recv_response; | |
696 | ||
697 | return usb_submit_urb(dev->in_urb, flags); | |
698 | } | |
699 | ||
700 | static void pn533_recv_ack(struct urb *urb) | |
701 | { | |
702 | struct pn533 *dev = urb->context; | |
f87bc9fb | 703 | struct pn533_cmd *cmd = dev->cmd; |
63123108 | 704 | struct pn533_std_frame *in_frame; |
c46ee386 AAJ |
705 | int rc; |
706 | ||
f87bc9fb WR |
707 | cmd->status = urb->status; |
708 | ||
c46ee386 AAJ |
709 | switch (urb->status) { |
710 | case 0: | |
f8f99171 | 711 | break; /* success */ |
c46ee386 AAJ |
712 | case -ECONNRESET: |
713 | case -ENOENT: | |
6ca55372 | 714 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
715 | "The urb has been stopped (status %d)", |
716 | urb->status); | |
4849f85e | 717 | goto sched_wq; |
f8f99171 | 718 | case -ESHUTDOWN: |
c46ee386 | 719 | default: |
6ca55372 | 720 | nfc_dev_err(&dev->interface->dev, |
f8f99171 | 721 | "Urb failure (status %d)", urb->status); |
4849f85e | 722 | goto sched_wq; |
c46ee386 AAJ |
723 | } |
724 | ||
725 | in_frame = dev->in_urb->transfer_buffer; | |
726 | ||
63123108 | 727 | if (!pn533_std_rx_frame_is_ack(in_frame)) { |
c46ee386 | 728 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); |
f87bc9fb | 729 | cmd->status = -EIO; |
4849f85e | 730 | goto sched_wq; |
c46ee386 AAJ |
731 | } |
732 | ||
c46ee386 AAJ |
733 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); |
734 | if (rc) { | |
6ca55372 WR |
735 | nfc_dev_err(&dev->interface->dev, |
736 | "usb_submit_urb failed with result %d", rc); | |
f87bc9fb | 737 | cmd->status = rc; |
4849f85e | 738 | goto sched_wq; |
c46ee386 AAJ |
739 | } |
740 | ||
741 | return; | |
742 | ||
4849f85e | 743 | sched_wq: |
5d50b364 | 744 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
745 | } |
746 | ||
747 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
748 | { | |
749 | dev->in_urb->complete = pn533_recv_ack; | |
750 | ||
751 | return usb_submit_urb(dev->in_urb, flags); | |
752 | } | |
753 | ||
754 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
755 | { | |
63123108 | 756 | u8 ack[PN533_STD_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00}; |
5b5a4437 | 757 | /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */ |
c46ee386 AAJ |
758 | int rc; |
759 | ||
760 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
761 | ||
5b5a4437 WR |
762 | dev->out_urb->transfer_buffer = ack; |
763 | dev->out_urb->transfer_buffer_length = sizeof(ack); | |
c46ee386 AAJ |
764 | rc = usb_submit_urb(dev->out_urb, flags); |
765 | ||
766 | return rc; | |
767 | } | |
768 | ||
e8f40531 WR |
769 | static int __pn533_send_frame_async(struct pn533 *dev, |
770 | struct sk_buff *out, | |
771 | struct sk_buff *in, | |
ddf19d20 | 772 | int in_len) |
c46ee386 AAJ |
773 | { |
774 | int rc; | |
775 | ||
e8f40531 WR |
776 | dev->out_urb->transfer_buffer = out->data; |
777 | dev->out_urb->transfer_buffer_length = out->len; | |
c46ee386 | 778 | |
e8f40531 WR |
779 | dev->in_urb->transfer_buffer = in->data; |
780 | dev->in_urb->transfer_buffer_length = in_len; | |
c46ee386 | 781 | |
e279f84f SO |
782 | print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE, 16, 1, |
783 | out->data, out->len, false); | |
99e591be | 784 | |
d94ea4f5 | 785 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); |
c46ee386 AAJ |
786 | if (rc) |
787 | return rc; | |
788 | ||
58520373 WR |
789 | if (dev->protocol_type == PN533_PROTO_REQ_RESP) { |
790 | /* request for response for sent packet directly */ | |
791 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); | |
792 | if (rc) | |
793 | goto error; | |
794 | } else if (dev->protocol_type == PN533_PROTO_REQ_ACK_RESP) { | |
795 | /* request for ACK if that's the case */ | |
796 | rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL); | |
797 | if (rc) | |
798 | goto error; | |
799 | } | |
c46ee386 AAJ |
800 | |
801 | return 0; | |
802 | ||
803 | error: | |
804 | usb_unlink_urb(dev->out_urb); | |
805 | return rc; | |
806 | } | |
807 | ||
9e2d493e WR |
808 | static void pn533_build_cmd_frame(struct pn533 *dev, u8 cmd_code, |
809 | struct sk_buff *skb) | |
aada17ac | 810 | { |
aada17ac WR |
811 | /* payload is already there, just update datalen */ |
812 | int payload_len = skb->len; | |
9e2d493e | 813 | struct pn533_frame_ops *ops = dev->ops; |
aada17ac | 814 | |
aada17ac | 815 | |
9e2d493e WR |
816 | skb_push(skb, ops->tx_header_len); |
817 | skb_put(skb, ops->tx_tail_len); | |
aada17ac | 818 | |
9e2d493e WR |
819 | ops->tx_frame_init(skb->data, cmd_code); |
820 | ops->tx_update_payload_len(skb->data, payload_len); | |
821 | ops->tx_frame_finish(skb->data); | |
aada17ac WR |
822 | } |
823 | ||
ddf19d20 | 824 | static int pn533_send_async_complete(struct pn533 *dev) |
aada17ac | 825 | { |
ddf19d20 | 826 | struct pn533_cmd *cmd = dev->cmd; |
f87bc9fb | 827 | int status = cmd->status; |
aada17ac | 828 | |
4231604b WR |
829 | struct sk_buff *req = cmd->req; |
830 | struct sk_buff *resp = cmd->resp; | |
aada17ac | 831 | |
aada17ac WR |
832 | int rc; |
833 | ||
834 | dev_kfree_skb(req); | |
835 | ||
0c33d262 | 836 | if (status < 0) { |
4231604b WR |
837 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, |
838 | ERR_PTR(status)); | |
aada17ac | 839 | dev_kfree_skb(resp); |
2c206fb7 | 840 | goto done; |
aada17ac WR |
841 | } |
842 | ||
9e2d493e WR |
843 | skb_put(resp, dev->ops->rx_frame_size(resp->data)); |
844 | skb_pull(resp, dev->ops->rx_header_len); | |
845 | skb_trim(resp, resp->len - dev->ops->rx_tail_len); | |
aada17ac | 846 | |
4231604b | 847 | rc = cmd->complete_cb(dev, cmd->complete_cb_context, resp); |
aada17ac | 848 | |
2c206fb7 | 849 | done: |
4231604b | 850 | kfree(cmd); |
2c206fb7 | 851 | dev->cmd = NULL; |
aada17ac WR |
852 | return rc; |
853 | } | |
854 | ||
855 | static int __pn533_send_async(struct pn533 *dev, u8 cmd_code, | |
856 | struct sk_buff *req, struct sk_buff *resp, | |
857 | int resp_len, | |
858 | pn533_send_async_complete_t complete_cb, | |
859 | void *complete_cb_context) | |
860 | { | |
861 | struct pn533_cmd *cmd; | |
aada17ac WR |
862 | int rc = 0; |
863 | ||
fcfafc76 | 864 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code); |
aada17ac | 865 | |
4231604b WR |
866 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
867 | if (!cmd) | |
aada17ac WR |
868 | return -ENOMEM; |
869 | ||
4b2a9532 | 870 | cmd->code = cmd_code; |
4231604b WR |
871 | cmd->req = req; |
872 | cmd->resp = resp; | |
873 | cmd->resp_len = resp_len; | |
874 | cmd->complete_cb = complete_cb; | |
875 | cmd->complete_cb_context = complete_cb_context; | |
aada17ac | 876 | |
9e2d493e | 877 | pn533_build_cmd_frame(dev, cmd_code, req); |
aada17ac WR |
878 | |
879 | mutex_lock(&dev->cmd_lock); | |
880 | ||
881 | if (!dev->cmd_pending) { | |
ddf19d20 | 882 | rc = __pn533_send_frame_async(dev, req, resp, resp_len); |
aada17ac WR |
883 | if (rc) |
884 | goto error; | |
885 | ||
886 | dev->cmd_pending = 1; | |
2c206fb7 | 887 | dev->cmd = cmd; |
aada17ac WR |
888 | goto unlock; |
889 | } | |
890 | ||
fcfafc76 WR |
891 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__, |
892 | cmd_code); | |
aada17ac | 893 | |
aada17ac | 894 | INIT_LIST_HEAD(&cmd->queue); |
aada17ac WR |
895 | list_add_tail(&cmd->queue, &dev->cmd_queue); |
896 | ||
897 | goto unlock; | |
898 | ||
899 | error: | |
4231604b | 900 | kfree(cmd); |
aada17ac WR |
901 | unlock: |
902 | mutex_unlock(&dev->cmd_lock); | |
903 | return rc; | |
15461aeb WR |
904 | } |
905 | ||
906 | static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code, | |
907 | struct sk_buff *req, | |
908 | pn533_send_async_complete_t complete_cb, | |
909 | void *complete_cb_context) | |
910 | { | |
911 | struct sk_buff *resp; | |
912 | int rc; | |
9e2d493e WR |
913 | int resp_len = dev->ops->rx_header_len + |
914 | dev->ops->max_payload_len + | |
915 | dev->ops->rx_tail_len; | |
15461aeb | 916 | |
15461aeb WR |
917 | resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL); |
918 | if (!resp) | |
919 | return -ENOMEM; | |
920 | ||
921 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, | |
922 | complete_cb_context); | |
923 | if (rc) | |
924 | dev_kfree_skb(resp); | |
925 | ||
926 | return rc; | |
aada17ac WR |
927 | } |
928 | ||
929 | static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code, | |
930 | struct sk_buff *req, | |
931 | pn533_send_async_complete_t complete_cb, | |
932 | void *complete_cb_context) | |
933 | { | |
934 | struct sk_buff *resp; | |
935 | int rc; | |
9e2d493e WR |
936 | int resp_len = dev->ops->rx_header_len + |
937 | dev->ops->max_payload_len + | |
938 | dev->ops->rx_tail_len; | |
aada17ac | 939 | |
9e2d493e | 940 | resp = alloc_skb(resp_len, GFP_KERNEL); |
aada17ac WR |
941 | if (!resp) |
942 | return -ENOMEM; | |
943 | ||
9e2d493e WR |
944 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, |
945 | complete_cb_context); | |
aada17ac WR |
946 | if (rc) |
947 | dev_kfree_skb(resp); | |
948 | ||
949 | return rc; | |
950 | } | |
951 | ||
b1e666f5 WR |
952 | /* |
953 | * pn533_send_cmd_direct_async | |
954 | * | |
955 | * The function sends a piority cmd directly to the chip omiting the cmd | |
956 | * queue. It's intended to be used by chaining mechanism of received responses | |
957 | * where the host has to request every single chunk of data before scheduling | |
958 | * next cmd from the queue. | |
959 | */ | |
960 | static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code, | |
961 | struct sk_buff *req, | |
962 | pn533_send_async_complete_t complete_cb, | |
963 | void *complete_cb_context) | |
964 | { | |
b1e666f5 | 965 | struct sk_buff *resp; |
4231604b | 966 | struct pn533_cmd *cmd; |
b1e666f5 | 967 | int rc; |
9e2d493e WR |
968 | int resp_len = dev->ops->rx_header_len + |
969 | dev->ops->max_payload_len + | |
970 | dev->ops->rx_tail_len; | |
b1e666f5 | 971 | |
b1e666f5 WR |
972 | resp = alloc_skb(resp_len, GFP_KERNEL); |
973 | if (!resp) | |
974 | return -ENOMEM; | |
975 | ||
4231604b WR |
976 | cmd = kzalloc(sizeof(*cmd), GFP_KERNEL); |
977 | if (!cmd) { | |
b1e666f5 WR |
978 | dev_kfree_skb(resp); |
979 | return -ENOMEM; | |
980 | } | |
981 | ||
4b2a9532 | 982 | cmd->code = cmd_code; |
4231604b WR |
983 | cmd->req = req; |
984 | cmd->resp = resp; | |
985 | cmd->resp_len = resp_len; | |
986 | cmd->complete_cb = complete_cb; | |
987 | cmd->complete_cb_context = complete_cb_context; | |
b1e666f5 | 988 | |
9e2d493e | 989 | pn533_build_cmd_frame(dev, cmd_code, req); |
b1e666f5 | 990 | |
ddf19d20 | 991 | rc = __pn533_send_frame_async(dev, req, resp, resp_len); |
b1e666f5 WR |
992 | if (rc < 0) { |
993 | dev_kfree_skb(resp); | |
4231604b | 994 | kfree(cmd); |
2c206fb7 WR |
995 | } else { |
996 | dev->cmd = cmd; | |
b1e666f5 WR |
997 | } |
998 | ||
999 | return rc; | |
1000 | } | |
1001 | ||
c79490e1 WR |
1002 | static void pn533_wq_cmd_complete(struct work_struct *work) |
1003 | { | |
1004 | struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); | |
1005 | int rc; | |
1006 | ||
1007 | rc = pn533_send_async_complete(dev); | |
1008 | if (rc != -EINPROGRESS) | |
1009 | queue_work(dev->wq, &dev->cmd_work); | |
1010 | } | |
1011 | ||
5d50b364 SO |
1012 | static void pn533_wq_cmd(struct work_struct *work) |
1013 | { | |
1014 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); | |
1015 | struct pn533_cmd *cmd; | |
0ce1fbdd | 1016 | int rc; |
5d50b364 SO |
1017 | |
1018 | mutex_lock(&dev->cmd_lock); | |
1019 | ||
1020 | if (list_empty(&dev->cmd_queue)) { | |
1021 | dev->cmd_pending = 0; | |
1022 | mutex_unlock(&dev->cmd_lock); | |
1023 | return; | |
1024 | } | |
1025 | ||
1026 | cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); | |
1027 | ||
60ad07ab SJ |
1028 | list_del(&cmd->queue); |
1029 | ||
5d50b364 SO |
1030 | mutex_unlock(&dev->cmd_lock); |
1031 | ||
ddf19d20 | 1032 | rc = __pn533_send_frame_async(dev, cmd->req, cmd->resp, cmd->resp_len); |
0ce1fbdd WR |
1033 | if (rc < 0) { |
1034 | dev_kfree_skb(cmd->req); | |
1035 | dev_kfree_skb(cmd->resp); | |
4231604b | 1036 | kfree(cmd); |
2c206fb7 | 1037 | return; |
0ce1fbdd | 1038 | } |
2c206fb7 WR |
1039 | |
1040 | dev->cmd = cmd; | |
5d50b364 SO |
1041 | } |
1042 | ||
c46ee386 | 1043 | struct pn533_sync_cmd_response { |
94c5c156 | 1044 | struct sk_buff *resp; |
c46ee386 AAJ |
1045 | struct completion done; |
1046 | }; | |
1047 | ||
94c5c156 WR |
1048 | static int pn533_send_sync_complete(struct pn533 *dev, void *_arg, |
1049 | struct sk_buff *resp) | |
1050 | { | |
1051 | struct pn533_sync_cmd_response *arg = _arg; | |
1052 | ||
94c5c156 WR |
1053 | arg->resp = resp; |
1054 | complete(&arg->done); | |
1055 | ||
1056 | return 0; | |
1057 | } | |
1058 | ||
1059 | /* pn533_send_cmd_sync | |
1060 | * | |
1061 | * Please note the req parameter is freed inside the function to | |
1062 | * limit a number of return value interpretations by the caller. | |
1063 | * | |
1064 | * 1. negative in case of error during TX path -> req should be freed | |
1065 | * | |
1066 | * 2. negative in case of error during RX path -> req should not be freed | |
1067 | * as it's been already freed at the begining of RX path by | |
1068 | * async_complete_cb. | |
1069 | * | |
1070 | * 3. valid pointer in case of succesfult RX path | |
1071 | * | |
1072 | * A caller has to check a return value with IS_ERR macro. If the test pass, | |
1073 | * the returned pointer is valid. | |
1074 | * | |
1075 | * */ | |
1076 | static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code, | |
1077 | struct sk_buff *req) | |
1078 | { | |
1079 | int rc; | |
1080 | struct pn533_sync_cmd_response arg; | |
1081 | ||
94c5c156 WR |
1082 | init_completion(&arg.done); |
1083 | ||
1084 | rc = pn533_send_cmd_async(dev, cmd_code, req, | |
1085 | pn533_send_sync_complete, &arg); | |
1086 | if (rc) { | |
1087 | dev_kfree_skb(req); | |
1088 | return ERR_PTR(rc); | |
1089 | } | |
1090 | ||
1091 | wait_for_completion(&arg.done); | |
1092 | ||
1093 | return arg.resp; | |
1094 | } | |
1095 | ||
c46ee386 AAJ |
1096 | static void pn533_send_complete(struct urb *urb) |
1097 | { | |
1098 | struct pn533 *dev = urb->context; | |
1099 | ||
c46ee386 AAJ |
1100 | switch (urb->status) { |
1101 | case 0: | |
f8f99171 | 1102 | break; /* success */ |
c46ee386 AAJ |
1103 | case -ECONNRESET: |
1104 | case -ENOENT: | |
6ca55372 | 1105 | nfc_dev_dbg(&dev->interface->dev, |
f8f99171 WR |
1106 | "The urb has been stopped (status %d)", |
1107 | urb->status); | |
c46ee386 | 1108 | break; |
f8f99171 | 1109 | case -ESHUTDOWN: |
c46ee386 | 1110 | default: |
f8f99171 WR |
1111 | nfc_dev_err(&dev->interface->dev, |
1112 | "Urb failure (status %d)", urb->status); | |
c46ee386 AAJ |
1113 | } |
1114 | } | |
1115 | ||
10cff29a WR |
1116 | static void pn533_abort_cmd(struct pn533 *dev, gfp_t flags) |
1117 | { | |
1118 | /* ACR122U does not support any command which aborts last | |
1119 | * issued command i.e. as ACK for standard PN533. Additionally, | |
1120 | * it behaves stange, sending broken or incorrect responses, | |
1121 | * when we cancel urb before the chip will send response. | |
1122 | */ | |
1123 | if (dev->device_type == PN533_DEVICE_ACR122U) | |
1124 | return; | |
1125 | ||
1126 | /* An ack will cancel the last issued command */ | |
1127 | pn533_send_ack(dev, flags); | |
1128 | ||
1129 | /* cancel the urb request */ | |
1130 | usb_kill_urb(dev->in_urb); | |
1131 | } | |
1132 | ||
9e2d493e | 1133 | static struct sk_buff *pn533_alloc_skb(struct pn533 *dev, unsigned int size) |
d22b2db6 WR |
1134 | { |
1135 | struct sk_buff *skb; | |
1136 | ||
9e2d493e | 1137 | skb = alloc_skb(dev->ops->tx_header_len + |
d22b2db6 | 1138 | size + |
9e2d493e | 1139 | dev->ops->tx_tail_len, GFP_KERNEL); |
d22b2db6 WR |
1140 | |
1141 | if (skb) | |
9e2d493e | 1142 | skb_reserve(skb, dev->ops->tx_header_len); |
d22b2db6 WR |
1143 | |
1144 | return skb; | |
1145 | } | |
1146 | ||
c46ee386 AAJ |
1147 | struct pn533_target_type_a { |
1148 | __be16 sens_res; | |
1149 | u8 sel_res; | |
1150 | u8 nfcid_len; | |
1151 | u8 nfcid_data[]; | |
1152 | } __packed; | |
1153 | ||
1154 | ||
1155 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
1156 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
1157 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
1158 | ||
1159 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
1160 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
1161 | ||
1162 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
1163 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
1164 | ||
1165 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
1166 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
1167 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
1168 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
1169 | ||
1170 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
1171 | int target_data_len) | |
1172 | { | |
1173 | u8 ssd; | |
1174 | u8 platconf; | |
1175 | ||
1176 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
1177 | return false; | |
1178 | ||
1179 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
1180 | the values are not being used */ | |
1181 | ||
1182 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1183 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
1184 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
1185 | ||
1186 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1187 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1188 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1189 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1190 | return false; |
1191 | ||
1192 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
1193 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
1194 | return false; | |
1195 | ||
1196 | return true; | |
1197 | } | |
1198 | ||
1199 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1200 | int tgt_data_len) | |
1201 | { | |
1202 | struct pn533_target_type_a *tgt_type_a; | |
1203 | ||
37cf4fc6 | 1204 | tgt_type_a = (struct pn533_target_type_a *)tgt_data; |
c46ee386 AAJ |
1205 | |
1206 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
1207 | return -EPROTO; | |
1208 | ||
1209 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
1210 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
1211 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
1212 | break; | |
1213 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
1214 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
1215 | break; | |
1216 | case PN533_TYPE_A_SEL_PROT_DEP: | |
1217 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
1218 | break; | |
1219 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
1220 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
1221 | NFC_PROTO_NFC_DEP_MASK; | |
1222 | break; | |
1223 | } | |
1224 | ||
1225 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
1226 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
1227 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
1228 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1229 | |
1230 | return 0; | |
1231 | } | |
1232 | ||
1233 | struct pn533_target_felica { | |
1234 | u8 pol_res; | |
1235 | u8 opcode; | |
1236 | u8 nfcid2[8]; | |
1237 | u8 pad[8]; | |
1238 | /* optional */ | |
1239 | u8 syst_code[]; | |
1240 | } __packed; | |
1241 | ||
1242 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
1243 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
1244 | ||
1245 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
1246 | int target_data_len) | |
1247 | { | |
1248 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
1249 | return false; | |
1250 | ||
1251 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
1252 | return false; | |
1253 | ||
1254 | return true; | |
1255 | } | |
1256 | ||
1257 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1258 | int tgt_data_len) | |
1259 | { | |
1260 | struct pn533_target_felica *tgt_felica; | |
1261 | ||
37cf4fc6 | 1262 | tgt_felica = (struct pn533_target_felica *)tgt_data; |
c46ee386 AAJ |
1263 | |
1264 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
1265 | return -EPROTO; | |
1266 | ||
5d467742 WR |
1267 | if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) && |
1268 | (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2)) | |
c46ee386 AAJ |
1269 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; |
1270 | else | |
1271 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
1272 | ||
7975754f SO |
1273 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
1274 | nfc_tgt->sensf_res_len = 9; | |
1275 | ||
c46ee386 AAJ |
1276 | return 0; |
1277 | } | |
1278 | ||
1279 | struct pn533_target_jewel { | |
1280 | __be16 sens_res; | |
1281 | u8 jewelid[4]; | |
1282 | } __packed; | |
1283 | ||
1284 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
1285 | int target_data_len) | |
1286 | { | |
1287 | u8 ssd; | |
1288 | u8 platconf; | |
1289 | ||
1290 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
1291 | return false; | |
1292 | ||
1293 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1294 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
1295 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
1296 | ||
1297 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1298 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1299 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1300 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1301 | return false; |
1302 | ||
1303 | return true; | |
1304 | } | |
1305 | ||
1306 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1307 | int tgt_data_len) | |
1308 | { | |
1309 | struct pn533_target_jewel *tgt_jewel; | |
1310 | ||
37cf4fc6 | 1311 | tgt_jewel = (struct pn533_target_jewel *)tgt_data; |
c46ee386 AAJ |
1312 | |
1313 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
1314 | return -EPROTO; | |
1315 | ||
1316 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
1317 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
1318 | nfc_tgt->nfcid1_len = 4; |
1319 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1320 | |
1321 | return 0; | |
1322 | } | |
1323 | ||
1324 | struct pn533_type_b_prot_info { | |
1325 | u8 bitrate; | |
1326 | u8 fsci_type; | |
1327 | u8 fwi_adc_fo; | |
1328 | } __packed; | |
1329 | ||
1330 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
1331 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
1332 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
1333 | ||
1334 | struct pn533_type_b_sens_res { | |
1335 | u8 opcode; | |
1336 | u8 nfcid[4]; | |
1337 | u8 appdata[4]; | |
1338 | struct pn533_type_b_prot_info prot_info; | |
1339 | } __packed; | |
1340 | ||
1341 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
1342 | ||
1343 | struct pn533_target_type_b { | |
1344 | struct pn533_type_b_sens_res sensb_res; | |
1345 | u8 attrib_res_len; | |
1346 | u8 attrib_res[]; | |
1347 | } __packed; | |
1348 | ||
1349 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
1350 | int target_data_len) | |
1351 | { | |
1352 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
1353 | return false; | |
1354 | ||
1355 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
1356 | return false; | |
1357 | ||
1358 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
1359 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
1360 | return false; | |
1361 | ||
1362 | return true; | |
1363 | } | |
1364 | ||
1365 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1366 | int tgt_data_len) | |
1367 | { | |
1368 | struct pn533_target_type_b *tgt_type_b; | |
1369 | ||
37cf4fc6 | 1370 | tgt_type_b = (struct pn533_target_type_b *)tgt_data; |
c46ee386 AAJ |
1371 | |
1372 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
1373 | return -EPROTO; | |
1374 | ||
01d719a2 | 1375 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
1376 | |
1377 | return 0; | |
1378 | } | |
1379 | ||
b5193e5d WR |
1380 | static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata, |
1381 | int tgdata_len) | |
c46ee386 | 1382 | { |
c46ee386 AAJ |
1383 | struct nfc_target nfc_tgt; |
1384 | int rc; | |
1385 | ||
1386 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
b5193e5d | 1387 | dev->poll_mod_curr); |
c46ee386 | 1388 | |
b5193e5d | 1389 | if (tg != 1) |
c46ee386 AAJ |
1390 | return -EPROTO; |
1391 | ||
98b3ac1b SO |
1392 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1393 | ||
c46ee386 AAJ |
1394 | switch (dev->poll_mod_curr) { |
1395 | case PN533_POLL_MOD_106KBPS_A: | |
b5193e5d | 1396 | rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1397 | break; |
1398 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1399 | case PN533_POLL_MOD_424KBPS_FELICA: | |
b5193e5d | 1400 | rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1401 | break; |
1402 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
b5193e5d | 1403 | rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1404 | break; |
1405 | case PN533_POLL_MOD_847KBPS_B: | |
b5193e5d | 1406 | rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1407 | break; |
1408 | default: | |
b5193e5d WR |
1409 | nfc_dev_err(&dev->interface->dev, |
1410 | "Unknown current poll modulation"); | |
c46ee386 AAJ |
1411 | return -EPROTO; |
1412 | } | |
1413 | ||
1414 | if (rc) | |
1415 | return rc; | |
1416 | ||
1417 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
b5193e5d WR |
1418 | nfc_dev_dbg(&dev->interface->dev, |
1419 | "The Tg found doesn't have the desired protocol"); | |
c46ee386 AAJ |
1420 | return -EAGAIN; |
1421 | } | |
1422 | ||
b5193e5d WR |
1423 | nfc_dev_dbg(&dev->interface->dev, |
1424 | "Target found - supported protocols: 0x%x", | |
1425 | nfc_tgt.supported_protocols); | |
c46ee386 AAJ |
1426 | |
1427 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1428 | ||
1429 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1430 | ||
1431 | return 0; | |
1432 | } | |
1433 | ||
6fbbdc16 SO |
1434 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1435 | { | |
1436 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1437 | } | |
1438 | ||
c46ee386 AAJ |
1439 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1440 | { | |
1441 | dev->poll_mod_count = 0; | |
1442 | } | |
1443 | ||
1444 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1445 | { | |
1446 | dev->poll_mod_active[dev->poll_mod_count] = | |
37cf4fc6 | 1447 | (struct pn533_poll_modulations *)&poll_mod[mod_index]; |
c46ee386 AAJ |
1448 | dev->poll_mod_count++; |
1449 | } | |
1450 | ||
6fbbdc16 SO |
1451 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1452 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1453 | { |
1454 | pn533_poll_reset_mod_list(dev); | |
1455 | ||
b08e8603 WR |
1456 | if ((im_protocols & NFC_PROTO_MIFARE_MASK) || |
1457 | (im_protocols & NFC_PROTO_ISO14443_MASK) || | |
1458 | (im_protocols & NFC_PROTO_NFC_DEP_MASK)) | |
c46ee386 AAJ |
1459 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1460 | ||
b08e8603 WR |
1461 | if (im_protocols & NFC_PROTO_FELICA_MASK || |
1462 | im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1463 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1464 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1465 | } | |
1466 | ||
6fbbdc16 | 1467 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1468 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1469 | ||
01d719a2 | 1470 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1471 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1472 | |
6fbbdc16 SO |
1473 | if (tm_protocols) |
1474 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1475 | } |
1476 | ||
b5193e5d | 1477 | static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp) |
c46ee386 | 1478 | { |
b5193e5d WR |
1479 | u8 nbtg, tg, *tgdata; |
1480 | int rc, tgdata_len; | |
c46ee386 AAJ |
1481 | |
1482 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1483 | ||
b5193e5d WR |
1484 | nbtg = resp->data[0]; |
1485 | tg = resp->data[1]; | |
1486 | tgdata = &resp->data[2]; | |
1487 | tgdata_len = resp->len - 2; /* nbtg + tg */ | |
1488 | ||
1489 | if (nbtg) { | |
1490 | rc = pn533_target_found(dev, tg, tgdata, tgdata_len); | |
c46ee386 AAJ |
1491 | |
1492 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1493 | if (rc == 0) { |
1494 | pn533_poll_reset_mod_list(dev); | |
1495 | return 0; | |
1496 | } | |
c46ee386 AAJ |
1497 | } |
1498 | ||
6fbbdc16 | 1499 | return -EAGAIN; |
c46ee386 AAJ |
1500 | } |
1501 | ||
9e2d493e | 1502 | static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev) |
ad3823ce | 1503 | { |
b5193e5d WR |
1504 | struct sk_buff *skb; |
1505 | u8 *felica, *nfcid3, *gb; | |
1506 | ||
9e2d493e WR |
1507 | u8 *gbytes = dev->gb; |
1508 | size_t gbytes_len = dev->gb_len; | |
1509 | ||
51d9e803 SO |
1510 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1511 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1512 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1513 | 0xff, 0xff}; /* System code */ | |
b5193e5d | 1514 | |
51d9e803 SO |
1515 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ |
1516 | 0x0, 0x0, 0x0, | |
1517 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce | 1518 | |
b5193e5d WR |
1519 | unsigned int skb_len = 36 + /* mode (1), mifare (6), |
1520 | felica (18), nfcid3 (10), gb_len (1) */ | |
1521 | gbytes_len + | |
1522 | 1; /* len Tk*/ | |
ad3823ce | 1523 | |
9e2d493e | 1524 | skb = pn533_alloc_skb(dev, skb_len); |
b5193e5d WR |
1525 | if (!skb) |
1526 | return NULL; | |
ad3823ce SO |
1527 | |
1528 | /* DEP support only */ | |
52f2eaee | 1529 | *skb_put(skb, 1) = PN533_INIT_TARGET_DEP; |
b5193e5d WR |
1530 | |
1531 | /* MIFARE params */ | |
1532 | memcpy(skb_put(skb, 6), mifare_params, 6); | |
51d9e803 SO |
1533 | |
1534 | /* Felica params */ | |
b5193e5d WR |
1535 | felica = skb_put(skb, 18); |
1536 | memcpy(felica, felica_params, 18); | |
1537 | get_random_bytes(felica + 2, 6); | |
51d9e803 SO |
1538 | |
1539 | /* NFCID3 */ | |
b5193e5d WR |
1540 | nfcid3 = skb_put(skb, 10); |
1541 | memset(nfcid3, 0, 10); | |
1542 | memcpy(nfcid3, felica, 8); | |
51d9e803 SO |
1543 | |
1544 | /* General bytes */ | |
b5193e5d | 1545 | *skb_put(skb, 1) = gbytes_len; |
51d9e803 | 1546 | |
b5193e5d WR |
1547 | gb = skb_put(skb, gbytes_len); |
1548 | memcpy(gb, gbytes, gbytes_len); | |
ad3823ce | 1549 | |
b5193e5d WR |
1550 | /* Len Tk */ |
1551 | *skb_put(skb, 1) = 0; | |
51d9e803 | 1552 | |
b5193e5d | 1553 | return skb; |
ad3823ce SO |
1554 | } |
1555 | ||
b1bb290a | 1556 | #define PN533_CMD_DATAEXCH_HEAD_LEN 1 |
103b34cf SO |
1557 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 |
1558 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
e4878823 | 1559 | struct sk_buff *resp) |
103b34cf | 1560 | { |
e4878823 | 1561 | u8 status; |
103b34cf SO |
1562 | |
1563 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1564 | ||
e4878823 WR |
1565 | if (IS_ERR(resp)) |
1566 | return PTR_ERR(resp); | |
103b34cf | 1567 | |
e4878823 WR |
1568 | status = resp->data[0]; |
1569 | skb_pull(resp, sizeof(status)); | |
103b34cf | 1570 | |
e4878823 | 1571 | if (status != 0) { |
103b34cf | 1572 | nfc_tm_deactivated(dev->nfc_dev); |
51ad304c | 1573 | dev->tgt_mode = 0; |
e4878823 | 1574 | dev_kfree_skb(resp); |
103b34cf SO |
1575 | return 0; |
1576 | } | |
1577 | ||
e4878823 | 1578 | return nfc_tm_data_received(dev->nfc_dev, resp); |
103b34cf SO |
1579 | } |
1580 | ||
1581 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1582 | { | |
1583 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
103b34cf | 1584 | |
e4878823 WR |
1585 | struct sk_buff *skb; |
1586 | int rc; | |
103b34cf | 1587 | |
e4878823 | 1588 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
103b34cf | 1589 | |
9e2d493e | 1590 | skb = pn533_alloc_skb(dev, 0); |
e4878823 | 1591 | if (!skb) |
103b34cf SO |
1592 | return; |
1593 | ||
e4878823 WR |
1594 | rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb, |
1595 | pn533_tm_get_data_complete, NULL); | |
103b34cf | 1596 | |
e4878823 WR |
1597 | if (rc < 0) |
1598 | dev_kfree_skb(skb); | |
103b34cf SO |
1599 | |
1600 | return; | |
1601 | } | |
1602 | ||
fc40a8c1 | 1603 | #define ATR_REQ_GB_OFFSET 17 |
b5193e5d | 1604 | static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp) |
fe7c5800 | 1605 | { |
b5193e5d | 1606 | u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb; |
fc40a8c1 | 1607 | size_t gb_len; |
103b34cf | 1608 | int rc; |
ad3823ce SO |
1609 | |
1610 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1611 | ||
b5193e5d | 1612 | if (resp->len < ATR_REQ_GB_OFFSET + 1) |
fc40a8c1 SO |
1613 | return -EINVAL; |
1614 | ||
b5193e5d WR |
1615 | mode = resp->data[0]; |
1616 | cmd = &resp->data[1]; | |
ad3823ce | 1617 | |
b5193e5d WR |
1618 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n", |
1619 | mode, resp->len); | |
ad3823ce | 1620 | |
b5193e5d WR |
1621 | if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) == |
1622 | PN533_INIT_TARGET_RESP_ACTIVE) | |
fc40a8c1 SO |
1623 | comm_mode = NFC_COMM_ACTIVE; |
1624 | ||
b5193e5d | 1625 | if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */ |
fc40a8c1 SO |
1626 | return -EOPNOTSUPP; |
1627 | ||
b5193e5d WR |
1628 | gb = cmd + ATR_REQ_GB_OFFSET; |
1629 | gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1); | |
fc40a8c1 | 1630 | |
103b34cf SO |
1631 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1632 | comm_mode, gb, gb_len); | |
1633 | if (rc < 0) { | |
1634 | nfc_dev_err(&dev->interface->dev, | |
1635 | "Error when signaling target activation"); | |
1636 | return rc; | |
1637 | } | |
1638 | ||
51ad304c | 1639 | dev->tgt_mode = 1; |
103b34cf SO |
1640 | queue_work(dev->wq, &dev->tg_work); |
1641 | ||
1642 | return 0; | |
fe7c5800 SO |
1643 | } |
1644 | ||
6fbbdc16 | 1645 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1646 | { |
37cf4fc6 | 1647 | struct pn533 *dev = (struct pn533 *)data; |
6fbbdc16 SO |
1648 | |
1649 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1650 | ||
6fbbdc16 SO |
1651 | dev->cancel_listen = 1; |
1652 | ||
6fbbdc16 SO |
1653 | pn533_poll_next_mod(dev); |
1654 | ||
1655 | queue_work(dev->wq, &dev->poll_work); | |
1656 | } | |
1657 | ||
1658 | static int pn533_poll_complete(struct pn533 *dev, void *arg, | |
b5193e5d | 1659 | struct sk_buff *resp) |
6fbbdc16 SO |
1660 | { |
1661 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1662 | int rc; |
1663 | ||
6fbbdc16 | 1664 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1665 | |
b5193e5d WR |
1666 | if (IS_ERR(resp)) { |
1667 | rc = PTR_ERR(resp); | |
1668 | ||
1669 | nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d", | |
1670 | __func__, rc); | |
1671 | ||
1672 | if (rc == -ENOENT) { | |
1673 | if (dev->poll_mod_count != 0) | |
1674 | return rc; | |
1675 | else | |
1676 | goto stop_poll; | |
1677 | } else if (rc < 0) { | |
1678 | nfc_dev_err(&dev->interface->dev, | |
1679 | "Error %d when running poll", rc); | |
1680 | goto stop_poll; | |
1681 | } | |
6fbbdc16 | 1682 | } |
ad3823ce | 1683 | |
6fbbdc16 SO |
1684 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1685 | ||
b5193e5d | 1686 | if (cur_mod->len == 0) { /* Target mode */ |
6fbbdc16 | 1687 | del_timer(&dev->listen_timer); |
b5193e5d WR |
1688 | rc = pn533_init_target_complete(dev, resp); |
1689 | goto done; | |
6fbbdc16 SO |
1690 | } |
1691 | ||
b5193e5d WR |
1692 | /* Initiator mode */ |
1693 | rc = pn533_start_poll_complete(dev, resp); | |
1694 | if (!rc) | |
1695 | goto done; | |
6fbbdc16 | 1696 | |
95cb9e10 WR |
1697 | if (!dev->poll_mod_count) { |
1698 | nfc_dev_dbg(&dev->interface->dev, "Polling has been stoped."); | |
1699 | goto done; | |
1700 | } | |
1701 | ||
b5193e5d | 1702 | pn533_poll_next_mod(dev); |
6fbbdc16 SO |
1703 | queue_work(dev->wq, &dev->poll_work); |
1704 | ||
b5193e5d WR |
1705 | done: |
1706 | dev_kfree_skb(resp); | |
1707 | return rc; | |
6fbbdc16 SO |
1708 | |
1709 | stop_poll: | |
b5193e5d WR |
1710 | nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped"); |
1711 | ||
6fbbdc16 SO |
1712 | pn533_poll_reset_mod_list(dev); |
1713 | dev->poll_protocols = 0; | |
b5193e5d | 1714 | return rc; |
ad3823ce SO |
1715 | } |
1716 | ||
9e2d493e WR |
1717 | static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533 *dev, |
1718 | struct pn533_poll_modulations *mod) | |
c46ee386 | 1719 | { |
b5193e5d | 1720 | struct sk_buff *skb; |
c46ee386 | 1721 | |
9e2d493e | 1722 | skb = pn533_alloc_skb(dev, mod->len); |
b5193e5d WR |
1723 | if (!skb) |
1724 | return NULL; | |
c46ee386 | 1725 | |
b5193e5d | 1726 | memcpy(skb_put(skb, mod->len), &mod->data, mod->len); |
c46ee386 | 1727 | |
b5193e5d | 1728 | return skb; |
6fbbdc16 | 1729 | } |
c46ee386 | 1730 | |
6fbbdc16 SO |
1731 | static int pn533_send_poll_frame(struct pn533 *dev) |
1732 | { | |
b5193e5d WR |
1733 | struct pn533_poll_modulations *mod; |
1734 | struct sk_buff *skb; | |
6fbbdc16 | 1735 | int rc; |
b5193e5d | 1736 | u8 cmd_code; |
c46ee386 | 1737 | |
b5193e5d | 1738 | mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1739 | |
b5193e5d WR |
1740 | nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n", |
1741 | __func__, mod->len); | |
c46ee386 | 1742 | |
b5193e5d WR |
1743 | if (mod->len == 0) { /* Listen mode */ |
1744 | cmd_code = PN533_CMD_TG_INIT_AS_TARGET; | |
9e2d493e | 1745 | skb = pn533_alloc_poll_tg_frame(dev); |
b5193e5d WR |
1746 | } else { /* Polling mode */ |
1747 | cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET; | |
9e2d493e | 1748 | skb = pn533_alloc_poll_in_frame(dev, mod); |
b5193e5d WR |
1749 | } |
1750 | ||
1751 | if (!skb) { | |
1752 | nfc_dev_err(&dev->interface->dev, "Failed to allocate skb."); | |
1753 | return -ENOMEM; | |
1754 | } | |
1755 | ||
1756 | rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete, | |
1757 | NULL); | |
1758 | if (rc < 0) { | |
1759 | dev_kfree_skb(skb); | |
6fbbdc16 | 1760 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); |
b5193e5d | 1761 | } |
c46ee386 | 1762 | |
6fbbdc16 SO |
1763 | return rc; |
1764 | } | |
1765 | ||
1766 | static void pn533_wq_poll(struct work_struct *work) | |
1767 | { | |
1768 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1769 | struct pn533_poll_modulations *cur_mod; | |
1770 | int rc; | |
1771 | ||
1772 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1773 | ||
1774 | nfc_dev_dbg(&dev->interface->dev, | |
1775 | "%s cancel_listen %d modulation len %d", | |
1776 | __func__, dev->cancel_listen, cur_mod->len); | |
1777 | ||
1778 | if (dev->cancel_listen == 1) { | |
1779 | dev->cancel_listen = 0; | |
10cff29a | 1780 | pn533_abort_cmd(dev, GFP_ATOMIC); |
c46ee386 AAJ |
1781 | } |
1782 | ||
6fbbdc16 SO |
1783 | rc = pn533_send_poll_frame(dev); |
1784 | if (rc) | |
1785 | return; | |
c46ee386 | 1786 | |
6fbbdc16 SO |
1787 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1788 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1789 | |
6fbbdc16 | 1790 | return; |
c46ee386 AAJ |
1791 | } |
1792 | ||
fe7c5800 SO |
1793 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1794 | u32 im_protocols, u32 tm_protocols) | |
1795 | { | |
1796 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1797 | ||
1798 | nfc_dev_dbg(&dev->interface->dev, | |
1799 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1800 | __func__, im_protocols, tm_protocols); | |
1801 | ||
1802 | if (dev->tgt_active_prot) { | |
1803 | nfc_dev_err(&dev->interface->dev, | |
1804 | "Cannot poll with a target already activated"); | |
1805 | return -EBUSY; | |
1806 | } | |
1807 | ||
51ad304c SO |
1808 | if (dev->tgt_mode) { |
1809 | nfc_dev_err(&dev->interface->dev, | |
1810 | "Cannot poll while already being activated"); | |
1811 | return -EBUSY; | |
1812 | } | |
1813 | ||
6fbbdc16 SO |
1814 | if (tm_protocols) { |
1815 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1816 | if (dev->gb == NULL) | |
1817 | tm_protocols = 0; | |
1818 | } | |
ad3823ce | 1819 | |
6fbbdc16 SO |
1820 | dev->poll_mod_curr = 0; |
1821 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1822 | dev->poll_protocols = im_protocols; | |
1823 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1824 | |
6fbbdc16 | 1825 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1826 | } |
1827 | ||
c46ee386 AAJ |
1828 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1829 | { | |
1830 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1831 | ||
1832 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1833 | ||
6fbbdc16 SO |
1834 | del_timer(&dev->listen_timer); |
1835 | ||
c46ee386 | 1836 | if (!dev->poll_mod_count) { |
6ca55372 WR |
1837 | nfc_dev_dbg(&dev->interface->dev, |
1838 | "Polling operation was not running"); | |
c46ee386 AAJ |
1839 | return; |
1840 | } | |
1841 | ||
10cff29a | 1842 | pn533_abort_cmd(dev, GFP_KERNEL); |
7c2a04a9 | 1843 | pn533_poll_reset_mod_list(dev); |
c46ee386 AAJ |
1844 | } |
1845 | ||
1846 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1847 | { | |
cb950d93 | 1848 | struct pn533_cmd_activate_response *rsp; |
541d920b | 1849 | u16 gt_len; |
c46ee386 AAJ |
1850 | int rc; |
1851 | ||
cb950d93 WR |
1852 | struct sk_buff *skb; |
1853 | struct sk_buff *resp; | |
c46ee386 | 1854 | |
cb950d93 | 1855 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
c46ee386 | 1856 | |
9e2d493e | 1857 | skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/ |
cb950d93 WR |
1858 | if (!skb) |
1859 | return -ENOMEM; | |
c46ee386 | 1860 | |
cb950d93 WR |
1861 | *skb_put(skb, sizeof(u8)) = 1; /* TG */ |
1862 | *skb_put(skb, sizeof(u8)) = 0; /* Next */ | |
c46ee386 | 1863 | |
cb950d93 WR |
1864 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb); |
1865 | if (IS_ERR(resp)) | |
1866 | return PTR_ERR(resp); | |
c46ee386 | 1867 | |
37cf4fc6 | 1868 | rsp = (struct pn533_cmd_activate_response *)resp->data; |
cb950d93 | 1869 | rc = rsp->status & PN533_CMD_RET_MASK; |
8a0ecfe7 | 1870 | if (rc != PN533_CMD_RET_SUCCESS) { |
a45e1c8d WR |
1871 | nfc_dev_err(&dev->interface->dev, |
1872 | "Target activation failed (error 0x%x)", rc); | |
cb950d93 | 1873 | dev_kfree_skb(resp); |
c46ee386 | 1874 | return -EIO; |
8a0ecfe7 | 1875 | } |
c46ee386 | 1876 | |
541d920b | 1877 | /* ATR_RES general bytes are located at offset 16 */ |
cb950d93 WR |
1878 | gt_len = resp->len - 16; |
1879 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len); | |
541d920b | 1880 | |
cb950d93 | 1881 | dev_kfree_skb(resp); |
541d920b | 1882 | return rc; |
c46ee386 AAJ |
1883 | } |
1884 | ||
90099433 EL |
1885 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1886 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1887 | { |
1888 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1889 | int rc; | |
1890 | ||
1891 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
5d467742 | 1892 | protocol); |
c46ee386 AAJ |
1893 | |
1894 | if (dev->poll_mod_count) { | |
6ca55372 WR |
1895 | nfc_dev_err(&dev->interface->dev, |
1896 | "Cannot activate while polling"); | |
c46ee386 AAJ |
1897 | return -EBUSY; |
1898 | } | |
1899 | ||
1900 | if (dev->tgt_active_prot) { | |
6ca55372 WR |
1901 | nfc_dev_err(&dev->interface->dev, |
1902 | "There is already an active target"); | |
c46ee386 AAJ |
1903 | return -EBUSY; |
1904 | } | |
1905 | ||
1906 | if (!dev->tgt_available_prots) { | |
6ca55372 WR |
1907 | nfc_dev_err(&dev->interface->dev, |
1908 | "There is no available target to activate"); | |
c46ee386 AAJ |
1909 | return -EINVAL; |
1910 | } | |
1911 | ||
1912 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
6ca55372 WR |
1913 | nfc_dev_err(&dev->interface->dev, |
1914 | "Target doesn't support requested proto %u", | |
1915 | protocol); | |
c46ee386 AAJ |
1916 | return -EINVAL; |
1917 | } | |
1918 | ||
1919 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1920 | rc = pn533_activate_target_nfcdep(dev); | |
1921 | if (rc) { | |
6ca55372 WR |
1922 | nfc_dev_err(&dev->interface->dev, |
1923 | "Activating target with DEP failed %d", rc); | |
c46ee386 AAJ |
1924 | return rc; |
1925 | } | |
1926 | } | |
1927 | ||
1928 | dev->tgt_active_prot = protocol; | |
1929 | dev->tgt_available_prots = 0; | |
1930 | ||
1931 | return 0; | |
1932 | } | |
1933 | ||
90099433 EL |
1934 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1935 | struct nfc_target *target) | |
c46ee386 AAJ |
1936 | { |
1937 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
cb950d93 WR |
1938 | |
1939 | struct sk_buff *skb; | |
1940 | struct sk_buff *resp; | |
1941 | ||
c46ee386 AAJ |
1942 | int rc; |
1943 | ||
1944 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1945 | ||
1946 | if (!dev->tgt_active_prot) { | |
1947 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
1948 | return; | |
1949 | } | |
1950 | ||
1951 | dev->tgt_active_prot = 0; | |
6ff73fd2 SO |
1952 | skb_queue_purge(&dev->resp_q); |
1953 | ||
9e2d493e | 1954 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
1955 | if (!skb) |
1956 | return; | |
c46ee386 | 1957 | |
cb950d93 | 1958 | *skb_put(skb, 1) = 1; /* TG*/ |
c46ee386 | 1959 | |
cb950d93 WR |
1960 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb); |
1961 | if (IS_ERR(resp)) | |
c46ee386 | 1962 | return; |
c46ee386 | 1963 | |
cb950d93 | 1964 | rc = resp->data[0] & PN533_CMD_RET_MASK; |
c46ee386 | 1965 | if (rc != PN533_CMD_RET_SUCCESS) |
6ca55372 WR |
1966 | nfc_dev_err(&dev->interface->dev, |
1967 | "Error 0x%x when releasing the target", rc); | |
c46ee386 | 1968 | |
cb950d93 | 1969 | dev_kfree_skb(resp); |
c46ee386 AAJ |
1970 | return; |
1971 | } | |
1972 | ||
361f3cb7 SO |
1973 | |
1974 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
13003649 | 1975 | struct sk_buff *resp) |
361f3cb7 | 1976 | { |
13003649 | 1977 | struct pn533_cmd_jump_dep_response *rsp; |
361f3cb7 SO |
1978 | u8 target_gt_len; |
1979 | int rc; | |
13003649 | 1980 | u8 active = *(u8 *)arg; |
70418e6e WR |
1981 | |
1982 | kfree(arg); | |
361f3cb7 | 1983 | |
13003649 WR |
1984 | if (IS_ERR(resp)) |
1985 | return PTR_ERR(resp); | |
361f3cb7 SO |
1986 | |
1987 | if (dev->tgt_available_prots && | |
1988 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
1989 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1990 | "The target does not support DEP"); |
13003649 WR |
1991 | rc = -EINVAL; |
1992 | goto error; | |
361f3cb7 SO |
1993 | } |
1994 | ||
13003649 WR |
1995 | rsp = (struct pn533_cmd_jump_dep_response *)resp->data; |
1996 | ||
1997 | rc = rsp->status & PN533_CMD_RET_MASK; | |
361f3cb7 SO |
1998 | if (rc != PN533_CMD_RET_SUCCESS) { |
1999 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 2000 | "Bringing DEP link up failed (error 0x%x)", rc); |
13003649 | 2001 | goto error; |
361f3cb7 SO |
2002 | } |
2003 | ||
2004 | if (!dev->tgt_available_prots) { | |
13003649 WR |
2005 | struct nfc_target nfc_target; |
2006 | ||
361f3cb7 SO |
2007 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); |
2008 | ||
2009 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 | 2010 | nfc_target.nfcid1_len = 10; |
13003649 | 2011 | memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len); |
361f3cb7 SO |
2012 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
2013 | if (rc) | |
13003649 | 2014 | goto error; |
361f3cb7 SO |
2015 | |
2016 | dev->tgt_available_prots = 0; | |
2017 | } | |
2018 | ||
2019 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
2020 | ||
2021 | /* ATR_RES general bytes are located at offset 17 */ | |
13003649 | 2022 | target_gt_len = resp->len - 17; |
361f3cb7 | 2023 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, |
13003649 | 2024 | rsp->gt, target_gt_len); |
361f3cb7 SO |
2025 | if (rc == 0) |
2026 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
13003649 WR |
2027 | dev->nfc_dev->targets[0].idx, |
2028 | !active, NFC_RF_INITIATOR); | |
361f3cb7 | 2029 | |
13003649 WR |
2030 | error: |
2031 | dev_kfree_skb(resp); | |
2032 | return rc; | |
361f3cb7 SO |
2033 | } |
2034 | ||
41a8ec49 SO |
2035 | static int pn533_mod_to_baud(struct pn533 *dev) |
2036 | { | |
2037 | switch (dev->poll_mod_curr) { | |
2038 | case PN533_POLL_MOD_106KBPS_A: | |
2039 | return 0; | |
2040 | case PN533_POLL_MOD_212KBPS_FELICA: | |
2041 | return 1; | |
2042 | case PN533_POLL_MOD_424KBPS_FELICA: | |
2043 | return 2; | |
2044 | default: | |
2045 | return -EINVAL; | |
2046 | } | |
2047 | } | |
2048 | ||
d7f3345d | 2049 | #define PASSIVE_DATA_LEN 5 |
90099433 | 2050 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
37cf4fc6 | 2051 | u8 comm_mode, u8 *gb, size_t gb_len) |
361f3cb7 SO |
2052 | { |
2053 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
13003649 WR |
2054 | struct sk_buff *skb; |
2055 | int rc, baud, skb_len; | |
2056 | u8 *next, *arg; | |
2057 | ||
d7f3345d | 2058 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; |
361f3cb7 SO |
2059 | |
2060 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2061 | ||
361f3cb7 SO |
2062 | if (dev->poll_mod_count) { |
2063 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 2064 | "Cannot bring the DEP link up while polling"); |
361f3cb7 SO |
2065 | return -EBUSY; |
2066 | } | |
2067 | ||
2068 | if (dev->tgt_active_prot) { | |
2069 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 2070 | "There is already an active target"); |
361f3cb7 SO |
2071 | return -EBUSY; |
2072 | } | |
2073 | ||
41a8ec49 SO |
2074 | baud = pn533_mod_to_baud(dev); |
2075 | if (baud < 0) { | |
2076 | nfc_dev_err(&dev->interface->dev, | |
2077 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
2078 | return baud; | |
2079 | } | |
2080 | ||
13003649 | 2081 | skb_len = 3 + gb_len; /* ActPass + BR + Next */ |
d7f3345d | 2082 | if (comm_mode == NFC_COMM_PASSIVE) |
13003649 | 2083 | skb_len += PASSIVE_DATA_LEN; |
d7f3345d | 2084 | |
9e2d493e | 2085 | skb = pn533_alloc_skb(dev, skb_len); |
13003649 | 2086 | if (!skb) |
361f3cb7 SO |
2087 | return -ENOMEM; |
2088 | ||
13003649 WR |
2089 | *skb_put(skb, 1) = !comm_mode; /* ActPass */ |
2090 | *skb_put(skb, 1) = baud; /* Baud rate */ | |
2091 | ||
2092 | next = skb_put(skb, 1); /* Next */ | |
2093 | *next = 0; | |
361f3cb7 | 2094 | |
13003649 WR |
2095 | if (comm_mode == NFC_COMM_PASSIVE && baud > 0) { |
2096 | memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, | |
2097 | PASSIVE_DATA_LEN); | |
2098 | *next |= 1; | |
d7f3345d SO |
2099 | } |
2100 | ||
47807d3d | 2101 | if (gb != NULL && gb_len > 0) { |
13003649 WR |
2102 | memcpy(skb_put(skb, gb_len), gb, gb_len); |
2103 | *next |= 4; /* We have some Gi */ | |
361f3cb7 | 2104 | } else { |
13003649 | 2105 | *next = 0; |
361f3cb7 SO |
2106 | } |
2107 | ||
13003649 WR |
2108 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
2109 | if (!arg) { | |
2110 | dev_kfree_skb(skb); | |
2111 | return -ENOMEM; | |
2112 | } | |
361f3cb7 | 2113 | |
13003649 | 2114 | *arg = !comm_mode; |
361f3cb7 | 2115 | |
13003649 WR |
2116 | rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb, |
2117 | pn533_in_dep_link_up_complete, arg); | |
2118 | ||
2119 | if (rc < 0) { | |
2120 | dev_kfree_skb(skb); | |
2121 | kfree(arg); | |
2122 | } | |
361f3cb7 SO |
2123 | |
2124 | return rc; | |
2125 | } | |
2126 | ||
2127 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
2128 | { | |
6fbbdc16 SO |
2129 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
2130 | ||
fcfafc76 WR |
2131 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2132 | ||
6fbbdc16 SO |
2133 | pn533_poll_reset_mod_list(dev); |
2134 | ||
10cff29a WR |
2135 | if (dev->tgt_mode || dev->tgt_active_prot) |
2136 | pn533_abort_cmd(dev, GFP_KERNEL); | |
51ad304c SO |
2137 | |
2138 | dev->tgt_active_prot = 0; | |
2139 | dev->tgt_mode = 0; | |
2140 | ||
2141 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
2142 | |
2143 | return 0; | |
2144 | } | |
2145 | ||
c46ee386 | 2146 | struct pn533_data_exchange_arg { |
c46ee386 AAJ |
2147 | data_exchange_cb_t cb; |
2148 | void *cb_context; | |
2149 | }; | |
2150 | ||
6ff73fd2 SO |
2151 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
2152 | { | |
2153 | struct sk_buff *skb, *tmp, *t; | |
2154 | unsigned int skb_len = 0, tmp_len = 0; | |
2155 | ||
fcfafc76 | 2156 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
6ff73fd2 SO |
2157 | |
2158 | if (skb_queue_empty(&dev->resp_q)) | |
2159 | return NULL; | |
2160 | ||
2161 | if (skb_queue_len(&dev->resp_q) == 1) { | |
2162 | skb = skb_dequeue(&dev->resp_q); | |
2163 | goto out; | |
2164 | } | |
2165 | ||
2166 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
2167 | skb_len += tmp->len; | |
2168 | ||
2169 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
2170 | __func__, skb_len); | |
2171 | ||
2172 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
2173 | if (skb == NULL) | |
2174 | goto out; | |
2175 | ||
2176 | skb_put(skb, skb_len); | |
2177 | ||
2178 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
2179 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
2180 | tmp_len += tmp->len; | |
2181 | } | |
2182 | ||
2183 | out: | |
2184 | skb_queue_purge(&dev->resp_q); | |
2185 | ||
2186 | return skb; | |
2187 | } | |
2188 | ||
c46ee386 | 2189 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
b1e666f5 | 2190 | struct sk_buff *resp) |
c46ee386 AAJ |
2191 | { |
2192 | struct pn533_data_exchange_arg *arg = _arg; | |
b1e666f5 WR |
2193 | struct sk_buff *skb; |
2194 | int rc = 0; | |
2195 | u8 status, ret, mi; | |
c46ee386 AAJ |
2196 | |
2197 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2198 | ||
b1e666f5 WR |
2199 | if (IS_ERR(resp)) { |
2200 | rc = PTR_ERR(resp); | |
2201 | goto _error; | |
c46ee386 AAJ |
2202 | } |
2203 | ||
b1e666f5 WR |
2204 | status = resp->data[0]; |
2205 | ret = status & PN533_CMD_RET_MASK; | |
2206 | mi = status & PN533_CMD_MI_MASK; | |
2207 | ||
2208 | skb_pull(resp, sizeof(status)); | |
c46ee386 | 2209 | |
b1e666f5 WR |
2210 | if (ret != PN533_CMD_RET_SUCCESS) { |
2211 | nfc_dev_err(&dev->interface->dev, | |
a45e1c8d | 2212 | "Exchanging data failed (error 0x%x)", ret); |
b1e666f5 | 2213 | rc = -EIO; |
c46ee386 AAJ |
2214 | goto error; |
2215 | } | |
2216 | ||
b1e666f5 | 2217 | skb_queue_tail(&dev->resp_q, resp); |
6ff73fd2 | 2218 | |
b1e666f5 WR |
2219 | if (mi) { |
2220 | dev->cmd_complete_mi_arg = arg; | |
6ff73fd2 SO |
2221 | queue_work(dev->wq, &dev->mi_work); |
2222 | return -EINPROGRESS; | |
c46ee386 AAJ |
2223 | } |
2224 | ||
6ff73fd2 | 2225 | skb = pn533_build_response(dev); |
b1e666f5 | 2226 | if (!skb) |
6ff73fd2 | 2227 | goto error; |
c46ee386 | 2228 | |
6ff73fd2 | 2229 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
2230 | kfree(arg); |
2231 | return 0; | |
2232 | ||
2233 | error: | |
b1e666f5 WR |
2234 | dev_kfree_skb(resp); |
2235 | _error: | |
6ff73fd2 | 2236 | skb_queue_purge(&dev->resp_q); |
b1e666f5 | 2237 | arg->cb(arg->cb_context, NULL, rc); |
c46ee386 | 2238 | kfree(arg); |
b1e666f5 | 2239 | return rc; |
c46ee386 AAJ |
2240 | } |
2241 | ||
be9ae4ce SO |
2242 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
2243 | struct nfc_target *target, struct sk_buff *skb, | |
2244 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
2245 | { |
2246 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
b1e666f5 | 2247 | struct pn533_data_exchange_arg *arg = NULL; |
c46ee386 AAJ |
2248 | int rc; |
2249 | ||
2250 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2251 | ||
b1e666f5 WR |
2252 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
2253 | /* TODO: Implement support to multi-part data exchange */ | |
2254 | nfc_dev_err(&dev->interface->dev, | |
2255 | "Data length greater than the max allowed: %d", | |
2256 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2257 | rc = -ENOSYS; | |
2258 | goto error; | |
2259 | } | |
2260 | ||
c46ee386 | 2261 | if (!dev->tgt_active_prot) { |
6ca55372 WR |
2262 | nfc_dev_err(&dev->interface->dev, |
2263 | "Can't exchange data if there is no active target"); | |
c46ee386 AAJ |
2264 | rc = -EINVAL; |
2265 | goto error; | |
2266 | } | |
2267 | ||
b1e666f5 | 2268 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
c46ee386 AAJ |
2269 | if (!arg) { |
2270 | rc = -ENOMEM; | |
b1e666f5 | 2271 | goto error; |
c46ee386 AAJ |
2272 | } |
2273 | ||
c46ee386 AAJ |
2274 | arg->cb = cb; |
2275 | arg->cb_context = cb_context; | |
2276 | ||
b1e666f5 WR |
2277 | switch (dev->device_type) { |
2278 | case PN533_DEVICE_PASORI: | |
2279 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2280 | rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU, | |
2281 | skb, | |
2282 | pn533_data_exchange_complete, | |
2283 | arg); | |
2284 | ||
2285 | break; | |
2286 | } | |
2287 | default: | |
2288 | *skb_push(skb, sizeof(u8)) = 1; /*TG*/ | |
2289 | ||
2290 | rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE, | |
2291 | skb, pn533_data_exchange_complete, | |
2292 | arg); | |
2293 | ||
2294 | break; | |
c46ee386 AAJ |
2295 | } |
2296 | ||
b1e666f5 WR |
2297 | if (rc < 0) /* rc from send_async */ |
2298 | goto error; | |
2299 | ||
c46ee386 AAJ |
2300 | return 0; |
2301 | ||
c46ee386 | 2302 | error: |
b1e666f5 WR |
2303 | kfree(arg); |
2304 | dev_kfree_skb(skb); | |
c46ee386 AAJ |
2305 | return rc; |
2306 | } | |
2307 | ||
dadb06f2 | 2308 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
e4878823 | 2309 | struct sk_buff *resp) |
dadb06f2 | 2310 | { |
e4878823 | 2311 | u8 status; |
5b412fd1 | 2312 | |
dadb06f2 SO |
2313 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2314 | ||
e4878823 WR |
2315 | if (IS_ERR(resp)) |
2316 | return PTR_ERR(resp); | |
5b412fd1 | 2317 | |
e4878823 | 2318 | status = resp->data[0]; |
dadb06f2 | 2319 | |
e4878823 | 2320 | dev_kfree_skb(resp); |
dadb06f2 | 2321 | |
e4878823 | 2322 | if (status != 0) { |
dadb06f2 SO |
2323 | nfc_tm_deactivated(dev->nfc_dev); |
2324 | ||
51ad304c SO |
2325 | dev->tgt_mode = 0; |
2326 | ||
dadb06f2 SO |
2327 | return 0; |
2328 | } | |
2329 | ||
2330 | queue_work(dev->wq, &dev->tg_work); | |
2331 | ||
2332 | return 0; | |
2333 | } | |
2334 | ||
2335 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2336 | { | |
2337 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
dadb06f2 SO |
2338 | int rc; |
2339 | ||
2340 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2341 | ||
e4878823 | 2342 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
dadb06f2 | 2343 | nfc_dev_err(&dev->interface->dev, |
e4878823 WR |
2344 | "Data length greater than the max allowed: %d", |
2345 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2346 | return -ENOSYS; | |
dadb06f2 SO |
2347 | } |
2348 | ||
e4878823 WR |
2349 | rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb, |
2350 | pn533_tm_send_complete, NULL); | |
2351 | if (rc < 0) | |
2352 | dev_kfree_skb(skb); | |
dadb06f2 SO |
2353 | |
2354 | return rc; | |
2355 | } | |
2356 | ||
6ff73fd2 SO |
2357 | static void pn533_wq_mi_recv(struct work_struct *work) |
2358 | { | |
2359 | struct pn533 *dev = container_of(work, struct pn533, mi_work); | |
b1e666f5 WR |
2360 | |
2361 | struct sk_buff *skb; | |
6ff73fd2 SO |
2362 | int rc; |
2363 | ||
2364 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2365 | ||
9e2d493e | 2366 | skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN); |
b1e666f5 WR |
2367 | if (!skb) |
2368 | goto error; | |
6ff73fd2 | 2369 | |
b1e666f5 WR |
2370 | switch (dev->device_type) { |
2371 | case PN533_DEVICE_PASORI: | |
2372 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2373 | rc = pn533_send_cmd_direct_async(dev, | |
2374 | PN533_CMD_IN_COMM_THRU, | |
2375 | skb, | |
2376 | pn533_data_exchange_complete, | |
2377 | dev->cmd_complete_mi_arg); | |
6ff73fd2 | 2378 | |
b1e666f5 WR |
2379 | break; |
2380 | } | |
2381 | default: | |
2382 | *skb_put(skb, sizeof(u8)) = 1; /*TG*/ | |
6ff73fd2 | 2383 | |
b1e666f5 WR |
2384 | rc = pn533_send_cmd_direct_async(dev, |
2385 | PN533_CMD_IN_DATA_EXCHANGE, | |
2386 | skb, | |
2387 | pn533_data_exchange_complete, | |
2388 | dev->cmd_complete_mi_arg); | |
b1bb290a | 2389 | |
b1e666f5 | 2390 | break; |
6ff73fd2 SO |
2391 | } |
2392 | ||
b1e666f5 | 2393 | if (rc == 0) /* success */ |
6ff73fd2 SO |
2394 | return; |
2395 | ||
b1e666f5 WR |
2396 | nfc_dev_err(&dev->interface->dev, |
2397 | "Error %d when trying to perform data_exchange", rc); | |
6ff73fd2 | 2398 | |
b1e666f5 | 2399 | dev_kfree_skb(skb); |
140ef7f6 | 2400 | kfree(dev->cmd_complete_mi_arg); |
6ff73fd2 | 2401 | |
b1e666f5 | 2402 | error: |
6ff73fd2 | 2403 | pn533_send_ack(dev, GFP_KERNEL); |
5d50b364 | 2404 | queue_work(dev->wq, &dev->cmd_work); |
6ff73fd2 SO |
2405 | } |
2406 | ||
c46ee386 AAJ |
2407 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2408 | u8 cfgdata_len) | |
2409 | { | |
cb950d93 WR |
2410 | struct sk_buff *skb; |
2411 | struct sk_buff *resp; | |
2412 | ||
2413 | int skb_len; | |
c46ee386 AAJ |
2414 | |
2415 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2416 | ||
cb950d93 | 2417 | skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */ |
c46ee386 | 2418 | |
9e2d493e | 2419 | skb = pn533_alloc_skb(dev, skb_len); |
cb950d93 WR |
2420 | if (!skb) |
2421 | return -ENOMEM; | |
c46ee386 | 2422 | |
cb950d93 WR |
2423 | *skb_put(skb, sizeof(cfgitem)) = cfgitem; |
2424 | memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len); | |
c46ee386 | 2425 | |
cb950d93 WR |
2426 | resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb); |
2427 | if (IS_ERR(resp)) | |
2428 | return PTR_ERR(resp); | |
c46ee386 | 2429 | |
cb950d93 WR |
2430 | dev_kfree_skb(resp); |
2431 | return 0; | |
2432 | } | |
2433 | ||
2434 | static int pn533_get_firmware_version(struct pn533 *dev, | |
2435 | struct pn533_fw_version *fv) | |
2436 | { | |
2437 | struct sk_buff *skb; | |
2438 | struct sk_buff *resp; | |
2439 | ||
9e2d493e | 2440 | skb = pn533_alloc_skb(dev, 0); |
cb950d93 WR |
2441 | if (!skb) |
2442 | return -ENOMEM; | |
2443 | ||
2444 | resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb); | |
2445 | if (IS_ERR(resp)) | |
2446 | return PTR_ERR(resp); | |
2447 | ||
2448 | fv->ic = resp->data[0]; | |
2449 | fv->ver = resp->data[1]; | |
2450 | fv->rev = resp->data[2]; | |
2451 | fv->support = resp->data[3]; | |
2452 | ||
2453 | dev_kfree_skb(resp); | |
2454 | return 0; | |
c46ee386 AAJ |
2455 | } |
2456 | ||
f75c2913 | 2457 | static int pn533_pasori_fw_reset(struct pn533 *dev) |
5c7b0531 | 2458 | { |
cb950d93 WR |
2459 | struct sk_buff *skb; |
2460 | struct sk_buff *resp; | |
5c7b0531 SO |
2461 | |
2462 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2463 | ||
9e2d493e | 2464 | skb = pn533_alloc_skb(dev, sizeof(u8)); |
cb950d93 WR |
2465 | if (!skb) |
2466 | return -ENOMEM; | |
5c7b0531 | 2467 | |
cb950d93 | 2468 | *skb_put(skb, sizeof(u8)) = 0x1; |
5c7b0531 | 2469 | |
cb950d93 WR |
2470 | resp = pn533_send_cmd_sync(dev, 0x18, skb); |
2471 | if (IS_ERR(resp)) | |
2472 | return PTR_ERR(resp); | |
5c7b0531 | 2473 | |
cb950d93 | 2474 | dev_kfree_skb(resp); |
5c7b0531 | 2475 | |
94c5c156 | 2476 | return 0; |
5c7b0531 SO |
2477 | } |
2478 | ||
53cf4839 WR |
2479 | struct pn533_acr122_poweron_rdr_arg { |
2480 | int rc; | |
2481 | struct completion done; | |
2482 | }; | |
2483 | ||
2484 | static void pn533_acr122_poweron_rdr_resp(struct urb *urb) | |
2485 | { | |
2486 | struct pn533_acr122_poweron_rdr_arg *arg = urb->context; | |
2487 | ||
2488 | nfc_dev_dbg(&urb->dev->dev, "%s", __func__); | |
2489 | ||
2490 | print_hex_dump(KERN_ERR, "ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1, | |
2491 | urb->transfer_buffer, urb->transfer_buffer_length, | |
2492 | false); | |
2493 | ||
2494 | arg->rc = urb->status; | |
2495 | complete(&arg->done); | |
2496 | } | |
2497 | ||
2498 | static int pn533_acr122_poweron_rdr(struct pn533 *dev) | |
2499 | { | |
2500 | /* Power on th reader (CCID cmd) */ | |
2501 | u8 cmd[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON, | |
2502 | 0, 0, 0, 0, 0, 0, 3, 0, 0}; | |
2503 | u8 buf[255]; | |
2504 | int rc; | |
2505 | void *cntx; | |
2506 | struct pn533_acr122_poweron_rdr_arg arg; | |
2507 | ||
2508 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2509 | ||
2510 | init_completion(&arg.done); | |
2511 | cntx = dev->in_urb->context; /* backup context */ | |
2512 | ||
2513 | dev->in_urb->transfer_buffer = buf; | |
2514 | dev->in_urb->transfer_buffer_length = 255; | |
2515 | dev->in_urb->complete = pn533_acr122_poweron_rdr_resp; | |
2516 | dev->in_urb->context = &arg; | |
2517 | ||
2518 | dev->out_urb->transfer_buffer = cmd; | |
2519 | dev->out_urb->transfer_buffer_length = sizeof(cmd); | |
2520 | ||
2521 | print_hex_dump(KERN_ERR, "ACR122 TX: ", DUMP_PREFIX_NONE, 16, 1, | |
2522 | cmd, sizeof(cmd), false); | |
2523 | ||
2524 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); | |
2525 | if (rc) { | |
2526 | nfc_dev_err(&dev->interface->dev, | |
2527 | "Reader power on cmd error %d", rc); | |
2528 | return rc; | |
2529 | } | |
2530 | ||
2531 | rc = usb_submit_urb(dev->in_urb, GFP_KERNEL); | |
2532 | if (rc) { | |
2533 | nfc_dev_err(&dev->interface->dev, | |
2534 | "Can't submit for reader power on cmd response %d", | |
2535 | rc); | |
2536 | return rc; | |
2537 | } | |
2538 | ||
2539 | wait_for_completion(&arg.done); | |
2540 | dev->in_urb->context = cntx; /* restore context */ | |
2541 | ||
2542 | return arg.rc; | |
2543 | } | |
2544 | ||
5c7b0531 | 2545 | static struct nfc_ops pn533_nfc_ops = { |
8b3fe7b5 IE |
2546 | .dev_up = NULL, |
2547 | .dev_down = NULL, | |
361f3cb7 SO |
2548 | .dep_link_up = pn533_dep_link_up, |
2549 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2550 | .start_poll = pn533_start_poll, |
2551 | .stop_poll = pn533_stop_poll, | |
2552 | .activate_target = pn533_activate_target, | |
2553 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2554 | .im_transceive = pn533_transceive, |
dadb06f2 | 2555 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2556 | }; |
2557 | ||
5c7b0531 SO |
2558 | static int pn533_setup(struct pn533 *dev) |
2559 | { | |
2560 | struct pn533_config_max_retries max_retries; | |
2561 | struct pn533_config_timing timing; | |
2562 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2563 | int rc; | |
2564 | ||
2565 | switch (dev->device_type) { | |
2566 | case PN533_DEVICE_STD: | |
2567 | max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS; | |
2568 | max_retries.mx_rty_psl = 2; | |
2569 | max_retries.mx_rty_passive_act = | |
2570 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2571 | ||
2572 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2573 | timing.atr_res_timeout = PN533_CONFIG_TIMING_204; | |
2574 | timing.dep_timeout = PN533_CONFIG_TIMING_409; | |
2575 | ||
2576 | break; | |
2577 | ||
2578 | case PN533_DEVICE_PASORI: | |
53cf4839 | 2579 | case PN533_DEVICE_ACR122U: |
5c7b0531 SO |
2580 | max_retries.mx_rty_atr = 0x2; |
2581 | max_retries.mx_rty_psl = 0x1; | |
2582 | max_retries.mx_rty_passive_act = | |
2583 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2584 | ||
2585 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2586 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2587 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2588 | ||
2589 | break; | |
2590 | ||
2591 | default: | |
2592 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2593 | dev->device_type); | |
2594 | return -EINVAL; | |
2595 | } | |
2596 | ||
2597 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2598 | (u8 *)&max_retries, sizeof(max_retries)); | |
2599 | if (rc) { | |
2600 | nfc_dev_err(&dev->interface->dev, | |
2601 | "Error on setting MAX_RETRIES config"); | |
2602 | return rc; | |
2603 | } | |
2604 | ||
2605 | ||
2606 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2607 | (u8 *)&timing, sizeof(timing)); | |
2608 | if (rc) { | |
2609 | nfc_dev_err(&dev->interface->dev, | |
2610 | "Error on setting RF timings"); | |
2611 | return rc; | |
2612 | } | |
2613 | ||
2614 | switch (dev->device_type) { | |
2615 | case PN533_DEVICE_STD: | |
2616 | break; | |
2617 | ||
2618 | case PN533_DEVICE_PASORI: | |
f75c2913 | 2619 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2620 | |
2621 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2622 | pasori_cfg, 3); | |
2623 | if (rc) { | |
2624 | nfc_dev_err(&dev->interface->dev, | |
2625 | "Error while settings PASORI config"); | |
2626 | return rc; | |
2627 | } | |
2628 | ||
f75c2913 | 2629 | pn533_pasori_fw_reset(dev); |
5c7b0531 SO |
2630 | |
2631 | break; | |
2632 | } | |
2633 | ||
2634 | return 0; | |
2635 | } | |
2636 | ||
c46ee386 AAJ |
2637 | static int pn533_probe(struct usb_interface *interface, |
2638 | const struct usb_device_id *id) | |
2639 | { | |
cb950d93 | 2640 | struct pn533_fw_version fw_ver; |
c46ee386 AAJ |
2641 | struct pn533 *dev; |
2642 | struct usb_host_interface *iface_desc; | |
2643 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2644 | int in_endpoint = 0; |
2645 | int out_endpoint = 0; | |
2646 | int rc = -ENOMEM; | |
2647 | int i; | |
2648 | u32 protocols; | |
2649 | ||
2650 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2651 | if (!dev) | |
2652 | return -ENOMEM; | |
2653 | ||
2654 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2655 | dev->interface = interface; | |
0201ed03 | 2656 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2657 | |
2658 | iface_desc = interface->cur_altsetting; | |
2659 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2660 | endpoint = &iface_desc->endpoint[i].desc; | |
2661 | ||
8d25ca79 | 2662 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) |
c46ee386 | 2663 | in_endpoint = endpoint->bEndpointAddress; |
c46ee386 | 2664 | |
8d25ca79 | 2665 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) |
c46ee386 | 2666 | out_endpoint = endpoint->bEndpointAddress; |
c46ee386 AAJ |
2667 | } |
2668 | ||
2669 | if (!in_endpoint || !out_endpoint) { | |
6ca55372 WR |
2670 | nfc_dev_err(&interface->dev, |
2671 | "Could not find bulk-in or bulk-out endpoint"); | |
c46ee386 AAJ |
2672 | rc = -ENODEV; |
2673 | goto error; | |
2674 | } | |
2675 | ||
c46ee386 | 2676 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); |
c46ee386 AAJ |
2677 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); |
2678 | ||
a5798094 | 2679 | if (!dev->in_urb || !dev->out_urb) |
c46ee386 AAJ |
2680 | goto error; |
2681 | ||
2682 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
5d467742 WR |
2683 | usb_rcvbulkpipe(dev->udev, in_endpoint), |
2684 | NULL, 0, NULL, dev); | |
c46ee386 | 2685 | usb_fill_bulk_urb(dev->out_urb, dev->udev, |
5d467742 WR |
2686 | usb_sndbulkpipe(dev->udev, out_endpoint), |
2687 | NULL, 0, pn533_send_complete, dev); | |
c46ee386 | 2688 | |
5d50b364 SO |
2689 | INIT_WORK(&dev->cmd_work, pn533_wq_cmd); |
2690 | INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete); | |
6ff73fd2 | 2691 | INIT_WORK(&dev->mi_work, pn533_wq_mi_recv); |
103b34cf | 2692 | INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); |
6fbbdc16 | 2693 | INIT_WORK(&dev->poll_work, pn533_wq_poll); |
58637c9b | 2694 | dev->wq = alloc_ordered_workqueue("pn533", 0); |
4849f85e SO |
2695 | if (dev->wq == NULL) |
2696 | goto error; | |
c46ee386 | 2697 | |
6fbbdc16 SO |
2698 | init_timer(&dev->listen_timer); |
2699 | dev->listen_timer.data = (unsigned long) dev; | |
2700 | dev->listen_timer.function = pn533_listen_mode_timer; | |
2701 | ||
6ff73fd2 SO |
2702 | skb_queue_head_init(&dev->resp_q); |
2703 | ||
5d50b364 SO |
2704 | INIT_LIST_HEAD(&dev->cmd_queue); |
2705 | ||
c46ee386 AAJ |
2706 | usb_set_intfdata(interface, dev); |
2707 | ||
9e2d493e | 2708 | dev->ops = &pn533_std_frame_ops; |
c46ee386 | 2709 | |
58520373 | 2710 | dev->protocol_type = PN533_PROTO_REQ_ACK_RESP; |
5c7b0531 SO |
2711 | dev->device_type = id->driver_info; |
2712 | switch (dev->device_type) { | |
2713 | case PN533_DEVICE_STD: | |
2714 | protocols = PN533_ALL_PROTOCOLS; | |
2715 | break; | |
2716 | ||
2717 | case PN533_DEVICE_PASORI: | |
2718 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2719 | break; | |
2720 | ||
53cf4839 WR |
2721 | case PN533_DEVICE_ACR122U: |
2722 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2723 | dev->ops = &pn533_acr122_frame_ops; | |
2724 | dev->protocol_type = PN533_PROTO_REQ_RESP, | |
2725 | ||
2726 | rc = pn533_acr122_poweron_rdr(dev); | |
2727 | if (rc < 0) { | |
2728 | nfc_dev_err(&dev->interface->dev, | |
2729 | "Couldn't poweron the reader (error %d)", | |
2730 | rc); | |
2731 | goto destroy_wq; | |
2732 | } | |
2733 | break; | |
2734 | ||
5c7b0531 SO |
2735 | default: |
2736 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2737 | dev->device_type); | |
2738 | rc = -EINVAL; | |
2739 | goto destroy_wq; | |
2740 | } | |
c46ee386 | 2741 | |
9e2d493e WR |
2742 | memset(&fw_ver, 0, sizeof(fw_ver)); |
2743 | rc = pn533_get_firmware_version(dev, &fw_ver); | |
2744 | if (rc < 0) | |
2745 | goto destroy_wq; | |
2746 | ||
2747 | nfc_dev_info(&dev->interface->dev, | |
2748 | "NXP PN533 firmware ver %d.%d now attached", | |
2749 | fw_ver.ver, fw_ver.rev); | |
2750 | ||
2751 | ||
e8753043 | 2752 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
390a1bd8 | 2753 | NFC_SE_NONE, |
9e2d493e | 2754 | dev->ops->tx_header_len + |
e8753043 | 2755 | PN533_CMD_DATAEXCH_HEAD_LEN, |
9e2d493e | 2756 | dev->ops->tx_tail_len); |
c46ee386 | 2757 | if (!dev->nfc_dev) |
4849f85e | 2758 | goto destroy_wq; |
c46ee386 AAJ |
2759 | |
2760 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2761 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2762 | ||
2763 | rc = nfc_register_device(dev->nfc_dev); | |
2764 | if (rc) | |
2765 | goto free_nfc_dev; | |
2766 | ||
5c7b0531 SO |
2767 | rc = pn533_setup(dev); |
2768 | if (rc) | |
34a85bfc | 2769 | goto unregister_nfc_dev; |
34a85bfc | 2770 | |
c46ee386 AAJ |
2771 | return 0; |
2772 | ||
9f2f8ba1 SO |
2773 | unregister_nfc_dev: |
2774 | nfc_unregister_device(dev->nfc_dev); | |
2775 | ||
c46ee386 AAJ |
2776 | free_nfc_dev: |
2777 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2778 | |
4849f85e SO |
2779 | destroy_wq: |
2780 | destroy_workqueue(dev->wq); | |
c46ee386 | 2781 | error: |
c46ee386 | 2782 | usb_free_urb(dev->in_urb); |
c46ee386 AAJ |
2783 | usb_free_urb(dev->out_urb); |
2784 | kfree(dev); | |
2785 | return rc; | |
2786 | } | |
2787 | ||
2788 | static void pn533_disconnect(struct usb_interface *interface) | |
2789 | { | |
2790 | struct pn533 *dev; | |
5d50b364 | 2791 | struct pn533_cmd *cmd, *n; |
c46ee386 AAJ |
2792 | |
2793 | dev = usb_get_intfdata(interface); | |
2794 | usb_set_intfdata(interface, NULL); | |
2795 | ||
2796 | nfc_unregister_device(dev->nfc_dev); | |
2797 | nfc_free_device(dev->nfc_dev); | |
2798 | ||
2799 | usb_kill_urb(dev->in_urb); | |
2800 | usb_kill_urb(dev->out_urb); | |
2801 | ||
4849f85e | 2802 | destroy_workqueue(dev->wq); |
c46ee386 | 2803 | |
6ff73fd2 SO |
2804 | skb_queue_purge(&dev->resp_q); |
2805 | ||
6fbbdc16 SO |
2806 | del_timer(&dev->listen_timer); |
2807 | ||
5d50b364 SO |
2808 | list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { |
2809 | list_del(&cmd->queue); | |
2810 | kfree(cmd); | |
2811 | } | |
2812 | ||
c46ee386 | 2813 | usb_free_urb(dev->in_urb); |
c46ee386 AAJ |
2814 | usb_free_urb(dev->out_urb); |
2815 | kfree(dev); | |
2816 | ||
276556db | 2817 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2818 | } |
2819 | ||
2820 | static struct usb_driver pn533_driver = { | |
2821 | .name = "pn533", | |
2822 | .probe = pn533_probe, | |
2823 | .disconnect = pn533_disconnect, | |
2824 | .id_table = pn533_table, | |
2825 | }; | |
2826 | ||
fe748483 | 2827 | module_usb_driver(pn533_driver); |
c46ee386 | 2828 | |
e70b96e9 WR |
2829 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>"); |
2830 | MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2831 | MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>"); | |
c46ee386 AAJ |
2832 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); |
2833 | MODULE_VERSION(VERSION); | |
2834 | MODULE_LICENSE("GPL"); |