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c46ee386 AAJ |
1 | /* |
2 | * Copyright (C) 2011 Instituto Nokia de Tecnologia | |
3 | * | |
4 | * Authors: | |
5 | * Lauro Ramos Venancio <lauro.venancio@openbossa.org> | |
6 | * Aloisio Almeida Jr <aloisio.almeida@openbossa.org> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
9 | * it under the terms of the GNU General Public License as published by | |
10 | * the Free Software Foundation; either version 2 of the License, or | |
11 | * (at your option) any later version. | |
12 | * | |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with this program; if not, write to the | |
20 | * Free Software Foundation, Inc., | |
21 | * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
22 | */ | |
23 | ||
24 | #include <linux/device.h> | |
25 | #include <linux/kernel.h> | |
26 | #include <linux/module.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/usb.h> | |
29 | #include <linux/nfc.h> | |
30 | #include <linux/netdevice.h> | |
55eb94f9 | 31 | #include <net/nfc/nfc.h> |
c46ee386 AAJ |
32 | |
33 | #define VERSION "0.1" | |
34 | ||
35 | #define PN533_VENDOR_ID 0x4CC | |
36 | #define PN533_PRODUCT_ID 0x2533 | |
37 | ||
38 | #define SCM_VENDOR_ID 0x4E6 | |
39 | #define SCL3711_PRODUCT_ID 0x5591 | |
40 | ||
5c7b0531 SO |
41 | #define SONY_VENDOR_ID 0x054c |
42 | #define PASORI_PRODUCT_ID 0x02e1 | |
43 | ||
44 | #define PN533_QUIRKS_TYPE_A BIT(0) | |
45 | #define PN533_QUIRKS_TYPE_F BIT(1) | |
46 | #define PN533_QUIRKS_DEP BIT(2) | |
47 | #define PN533_QUIRKS_RAW_EXCHANGE BIT(3) | |
48 | ||
49 | #define PN533_DEVICE_STD 0x1 | |
50 | #define PN533_DEVICE_PASORI 0x2 | |
51 | ||
01d719a2 SO |
52 | #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\ |
53 | NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\ | |
54 | NFC_PROTO_NFC_DEP_MASK |\ | |
55 | NFC_PROTO_ISO14443_B_MASK) | |
5c7b0531 SO |
56 | |
57 | #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ | |
58 | NFC_PROTO_MIFARE_MASK | \ | |
59 | NFC_PROTO_FELICA_MASK | \ | |
01d719a2 | 60 | NFC_PROTO_ISO14443_MASK | \ |
5c7b0531 SO |
61 | NFC_PROTO_NFC_DEP_MASK) |
62 | ||
c46ee386 | 63 | static const struct usb_device_id pn533_table[] = { |
5c7b0531 SO |
64 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
65 | .idVendor = PN533_VENDOR_ID, | |
66 | .idProduct = PN533_PRODUCT_ID, | |
67 | .driver_info = PN533_DEVICE_STD, | |
68 | }, | |
69 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
70 | .idVendor = SCM_VENDOR_ID, | |
71 | .idProduct = SCL3711_PRODUCT_ID, | |
72 | .driver_info = PN533_DEVICE_STD, | |
73 | }, | |
74 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
75 | .idVendor = SONY_VENDOR_ID, | |
76 | .idProduct = PASORI_PRODUCT_ID, | |
77 | .driver_info = PN533_DEVICE_PASORI, | |
78 | }, | |
c46ee386 AAJ |
79 | { } |
80 | }; | |
81 | MODULE_DEVICE_TABLE(usb, pn533_table); | |
82 | ||
6fbbdc16 SO |
83 | /* How much time we spend listening for initiators */ |
84 | #define PN533_LISTEN_TIME 2 | |
85 | ||
c46ee386 AAJ |
86 | /* frame definitions */ |
87 | #define PN533_FRAME_TAIL_SIZE 2 | |
88 | #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \ | |
89 | PN533_FRAME_TAIL_SIZE) | |
90 | #define PN533_FRAME_ACK_SIZE (sizeof(struct pn533_frame) + 1) | |
91 | #define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen]) | |
92 | #define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1]) | |
93 | ||
94 | /* start of frame */ | |
95 | #define PN533_SOF 0x00FF | |
96 | ||
97 | /* frame identifier: in/out/error */ | |
98 | #define PN533_FRAME_IDENTIFIER(f) (f->data[0]) | |
99 | #define PN533_DIR_OUT 0xD4 | |
100 | #define PN533_DIR_IN 0xD5 | |
101 | ||
102 | /* PN533 Commands */ | |
103 | #define PN533_FRAME_CMD(f) (f->data[1]) | |
104 | #define PN533_FRAME_CMD_PARAMS_PTR(f) (&f->data[2]) | |
105 | #define PN533_FRAME_CMD_PARAMS_LEN(f) (f->datalen - 2) | |
106 | ||
107 | #define PN533_CMD_GET_FIRMWARE_VERSION 0x02 | |
108 | #define PN533_CMD_RF_CONFIGURATION 0x32 | |
109 | #define PN533_CMD_IN_DATA_EXCHANGE 0x40 | |
5c7b0531 | 110 | #define PN533_CMD_IN_COMM_THRU 0x42 |
c46ee386 AAJ |
111 | #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A |
112 | #define PN533_CMD_IN_ATR 0x50 | |
113 | #define PN533_CMD_IN_RELEASE 0x52 | |
361f3cb7 | 114 | #define PN533_CMD_IN_JUMP_FOR_DEP 0x56 |
c46ee386 | 115 | |
ad3823ce | 116 | #define PN533_CMD_TG_INIT_AS_TARGET 0x8c |
103b34cf | 117 | #define PN533_CMD_TG_GET_DATA 0x86 |
dadb06f2 | 118 | #define PN533_CMD_TG_SET_DATA 0x8e |
ad3823ce | 119 | |
c46ee386 AAJ |
120 | #define PN533_CMD_RESPONSE(cmd) (cmd + 1) |
121 | ||
122 | /* PN533 Return codes */ | |
123 | #define PN533_CMD_RET_MASK 0x3F | |
124 | #define PN533_CMD_MI_MASK 0x40 | |
125 | #define PN533_CMD_RET_SUCCESS 0x00 | |
126 | ||
103b34cf SO |
127 | /* PN533 status codes */ |
128 | #define PN533_STATUS_TARGET_RELEASED 0x29 | |
129 | ||
c46ee386 AAJ |
130 | struct pn533; |
131 | ||
132 | typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, | |
133 | u8 *params, int params_len); | |
134 | ||
135 | /* structs for pn533 commands */ | |
136 | ||
137 | /* PN533_CMD_GET_FIRMWARE_VERSION */ | |
138 | struct pn533_fw_version { | |
139 | u8 ic; | |
140 | u8 ver; | |
141 | u8 rev; | |
142 | u8 support; | |
143 | }; | |
144 | ||
145 | /* PN533_CMD_RF_CONFIGURATION */ | |
34a85bfc | 146 | #define PN533_CFGITEM_TIMING 0x02 |
c46ee386 | 147 | #define PN533_CFGITEM_MAX_RETRIES 0x05 |
5c7b0531 | 148 | #define PN533_CFGITEM_PASORI 0x82 |
c46ee386 | 149 | |
34a85bfc SO |
150 | #define PN533_CONFIG_TIMING_102 0xb |
151 | #define PN533_CONFIG_TIMING_204 0xc | |
152 | #define PN533_CONFIG_TIMING_409 0xd | |
153 | #define PN533_CONFIG_TIMING_819 0xe | |
154 | ||
c46ee386 AAJ |
155 | #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 |
156 | #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF | |
157 | ||
158 | struct pn533_config_max_retries { | |
159 | u8 mx_rty_atr; | |
160 | u8 mx_rty_psl; | |
161 | u8 mx_rty_passive_act; | |
162 | } __packed; | |
163 | ||
34a85bfc SO |
164 | struct pn533_config_timing { |
165 | u8 rfu; | |
166 | u8 atr_res_timeout; | |
167 | u8 dep_timeout; | |
168 | } __packed; | |
169 | ||
c46ee386 AAJ |
170 | /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ |
171 | ||
172 | /* felica commands opcode */ | |
173 | #define PN533_FELICA_OPC_SENSF_REQ 0 | |
174 | #define PN533_FELICA_OPC_SENSF_RES 1 | |
175 | /* felica SENSF_REQ parameters */ | |
176 | #define PN533_FELICA_SENSF_SC_ALL 0xFFFF | |
177 | #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 | |
178 | #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 | |
179 | #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 | |
180 | ||
181 | /* type B initiator_data values */ | |
182 | #define PN533_TYPE_B_AFI_ALL_FAMILIES 0 | |
183 | #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 | |
184 | #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 | |
185 | ||
186 | union pn533_cmd_poll_initdata { | |
187 | struct { | |
188 | u8 afi; | |
189 | u8 polling_method; | |
190 | } __packed type_b; | |
191 | struct { | |
192 | u8 opcode; | |
193 | __be16 sc; | |
194 | u8 rc; | |
195 | u8 tsn; | |
196 | } __packed felica; | |
197 | }; | |
198 | ||
199 | /* Poll modulations */ | |
200 | enum { | |
201 | PN533_POLL_MOD_106KBPS_A, | |
202 | PN533_POLL_MOD_212KBPS_FELICA, | |
203 | PN533_POLL_MOD_424KBPS_FELICA, | |
204 | PN533_POLL_MOD_106KBPS_JEWEL, | |
205 | PN533_POLL_MOD_847KBPS_B, | |
6fbbdc16 | 206 | PN533_LISTEN_MOD, |
c46ee386 AAJ |
207 | |
208 | __PN533_POLL_MOD_AFTER_LAST, | |
209 | }; | |
210 | #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) | |
211 | ||
212 | struct pn533_poll_modulations { | |
213 | struct { | |
214 | u8 maxtg; | |
215 | u8 brty; | |
216 | union pn533_cmd_poll_initdata initiator_data; | |
217 | } __packed data; | |
218 | u8 len; | |
219 | }; | |
220 | ||
221 | const struct pn533_poll_modulations poll_mod[] = { | |
222 | [PN533_POLL_MOD_106KBPS_A] = { | |
223 | .data = { | |
224 | .maxtg = 1, | |
225 | .brty = 0, | |
226 | }, | |
227 | .len = 2, | |
228 | }, | |
229 | [PN533_POLL_MOD_212KBPS_FELICA] = { | |
230 | .data = { | |
231 | .maxtg = 1, | |
232 | .brty = 1, | |
233 | .initiator_data.felica = { | |
234 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
235 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
236 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
237 | .tsn = 0, | |
238 | }, | |
239 | }, | |
240 | .len = 7, | |
241 | }, | |
242 | [PN533_POLL_MOD_424KBPS_FELICA] = { | |
243 | .data = { | |
244 | .maxtg = 1, | |
245 | .brty = 2, | |
246 | .initiator_data.felica = { | |
247 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
248 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
249 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
250 | .tsn = 0, | |
251 | }, | |
252 | }, | |
253 | .len = 7, | |
254 | }, | |
255 | [PN533_POLL_MOD_106KBPS_JEWEL] = { | |
256 | .data = { | |
257 | .maxtg = 1, | |
258 | .brty = 4, | |
259 | }, | |
260 | .len = 2, | |
261 | }, | |
262 | [PN533_POLL_MOD_847KBPS_B] = { | |
263 | .data = { | |
264 | .maxtg = 1, | |
265 | .brty = 8, | |
266 | .initiator_data.type_b = { | |
267 | .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, | |
268 | .polling_method = | |
269 | PN533_TYPE_B_POLL_METHOD_TIMESLOT, | |
270 | }, | |
271 | }, | |
272 | .len = 3, | |
273 | }, | |
6fbbdc16 SO |
274 | [PN533_LISTEN_MOD] = { |
275 | .len = 0, | |
276 | }, | |
c46ee386 AAJ |
277 | }; |
278 | ||
279 | /* PN533_CMD_IN_ATR */ | |
280 | ||
281 | struct pn533_cmd_activate_param { | |
282 | u8 tg; | |
283 | u8 next; | |
284 | } __packed; | |
285 | ||
286 | struct pn533_cmd_activate_response { | |
287 | u8 status; | |
288 | u8 nfcid3t[10]; | |
289 | u8 didt; | |
290 | u8 bst; | |
291 | u8 brt; | |
292 | u8 to; | |
293 | u8 ppt; | |
294 | /* optional */ | |
295 | u8 gt[]; | |
296 | } __packed; | |
297 | ||
361f3cb7 SO |
298 | /* PN533_CMD_IN_JUMP_FOR_DEP */ |
299 | struct pn533_cmd_jump_dep { | |
300 | u8 active; | |
301 | u8 baud; | |
302 | u8 next; | |
d7f3345d | 303 | u8 data[]; |
361f3cb7 SO |
304 | } __packed; |
305 | ||
306 | struct pn533_cmd_jump_dep_response { | |
307 | u8 status; | |
308 | u8 tg; | |
309 | u8 nfcid3t[10]; | |
310 | u8 didt; | |
311 | u8 bst; | |
312 | u8 brt; | |
313 | u8 to; | |
314 | u8 ppt; | |
315 | /* optional */ | |
316 | u8 gt[]; | |
317 | } __packed; | |
c46ee386 | 318 | |
ad3823ce SO |
319 | |
320 | /* PN533_TG_INIT_AS_TARGET */ | |
321 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
322 | #define PN533_INIT_TARGET_DEP 0x2 | |
323 | ||
fc40a8c1 SO |
324 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
325 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
326 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
327 | ||
ad3823ce SO |
328 | struct pn533_cmd_init_target { |
329 | u8 mode; | |
330 | u8 mifare[6]; | |
331 | u8 felica[18]; | |
332 | u8 nfcid3[10]; | |
333 | u8 gb_len; | |
334 | u8 gb[]; | |
335 | } __packed; | |
336 | ||
337 | struct pn533_cmd_init_target_response { | |
338 | u8 mode; | |
339 | u8 cmd[]; | |
340 | } __packed; | |
341 | ||
c46ee386 AAJ |
342 | struct pn533 { |
343 | struct usb_device *udev; | |
344 | struct usb_interface *interface; | |
345 | struct nfc_dev *nfc_dev; | |
346 | ||
347 | struct urb *out_urb; | |
348 | int out_maxlen; | |
349 | struct pn533_frame *out_frame; | |
350 | ||
351 | struct urb *in_urb; | |
352 | int in_maxlen; | |
353 | struct pn533_frame *in_frame; | |
354 | ||
6ff73fd2 SO |
355 | struct sk_buff_head resp_q; |
356 | ||
4849f85e SO |
357 | struct workqueue_struct *wq; |
358 | struct work_struct cmd_work; | |
6fbbdc16 | 359 | struct work_struct poll_work; |
6ff73fd2 | 360 | struct work_struct mi_work; |
103b34cf | 361 | struct work_struct tg_work; |
6fbbdc16 | 362 | struct timer_list listen_timer; |
4849f85e SO |
363 | struct pn533_frame *wq_in_frame; |
364 | int wq_in_error; | |
6fbbdc16 | 365 | int cancel_listen; |
c46ee386 AAJ |
366 | |
367 | pn533_cmd_complete_t cmd_complete; | |
368 | void *cmd_complete_arg; | |
0201ed03 | 369 | struct mutex cmd_lock; |
c46ee386 AAJ |
370 | u8 cmd; |
371 | ||
372 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
373 | u8 poll_mod_count; | |
374 | u8 poll_mod_curr; | |
375 | u32 poll_protocols; | |
6fbbdc16 SO |
376 | u32 listen_protocols; |
377 | ||
378 | u8 *gb; | |
379 | size_t gb_len; | |
c46ee386 AAJ |
380 | |
381 | u8 tgt_available_prots; | |
382 | u8 tgt_active_prot; | |
51ad304c | 383 | u8 tgt_mode; |
5c7b0531 SO |
384 | |
385 | u32 device_type; | |
c46ee386 AAJ |
386 | }; |
387 | ||
388 | struct pn533_frame { | |
389 | u8 preamble; | |
390 | __be16 start_frame; | |
391 | u8 datalen; | |
392 | u8 datalen_checksum; | |
393 | u8 data[]; | |
394 | } __packed; | |
395 | ||
396 | /* The rule: value + checksum = 0 */ | |
397 | static inline u8 pn533_checksum(u8 value) | |
398 | { | |
399 | return ~value + 1; | |
400 | } | |
401 | ||
402 | /* The rule: sum(data elements) + checksum = 0 */ | |
403 | static u8 pn533_data_checksum(u8 *data, int datalen) | |
404 | { | |
405 | u8 sum = 0; | |
406 | int i; | |
407 | ||
408 | for (i = 0; i < datalen; i++) | |
409 | sum += data[i]; | |
410 | ||
411 | return pn533_checksum(sum); | |
412 | } | |
413 | ||
414 | /** | |
415 | * pn533_tx_frame_ack - create a ack frame | |
416 | * @frame: The frame to be set as ack | |
417 | * | |
418 | * Ack is different type of standard frame. As a standard frame, it has | |
419 | * preamble and start_frame. However the checksum of this frame must fail, | |
420 | * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test | |
421 | * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack. | |
422 | * After datalen_checksum field, the postamble is placed. | |
423 | */ | |
424 | static void pn533_tx_frame_ack(struct pn533_frame *frame) | |
425 | { | |
426 | frame->preamble = 0; | |
427 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
428 | frame->datalen = 0; | |
429 | frame->datalen_checksum = 0xFF; | |
430 | /* data[0] is used as postamble */ | |
431 | frame->data[0] = 0; | |
432 | } | |
433 | ||
434 | static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd) | |
435 | { | |
436 | frame->preamble = 0; | |
437 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
438 | PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT; | |
439 | PN533_FRAME_CMD(frame) = cmd; | |
440 | frame->datalen = 2; | |
441 | } | |
442 | ||
443 | static void pn533_tx_frame_finish(struct pn533_frame *frame) | |
444 | { | |
445 | frame->datalen_checksum = pn533_checksum(frame->datalen); | |
446 | ||
447 | PN533_FRAME_CHECKSUM(frame) = | |
448 | pn533_data_checksum(frame->data, frame->datalen); | |
449 | ||
450 | PN533_FRAME_POSTAMBLE(frame) = 0; | |
451 | } | |
452 | ||
453 | static bool pn533_rx_frame_is_valid(struct pn533_frame *frame) | |
454 | { | |
455 | u8 checksum; | |
456 | ||
457 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
458 | return false; | |
459 | ||
460 | checksum = pn533_checksum(frame->datalen); | |
461 | if (checksum != frame->datalen_checksum) | |
462 | return false; | |
463 | ||
464 | checksum = pn533_data_checksum(frame->data, frame->datalen); | |
465 | if (checksum != PN533_FRAME_CHECKSUM(frame)) | |
466 | return false; | |
467 | ||
468 | return true; | |
469 | } | |
470 | ||
471 | static bool pn533_rx_frame_is_ack(struct pn533_frame *frame) | |
472 | { | |
473 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
474 | return false; | |
475 | ||
476 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
477 | return false; | |
478 | ||
479 | return true; | |
480 | } | |
481 | ||
482 | static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd) | |
483 | { | |
484 | return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd)); | |
485 | } | |
486 | ||
4849f85e SO |
487 | |
488 | static void pn533_wq_cmd_complete(struct work_struct *work) | |
c46ee386 | 489 | { |
4849f85e SO |
490 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); |
491 | struct pn533_frame *in_frame; | |
c46ee386 AAJ |
492 | int rc; |
493 | ||
4849f85e SO |
494 | in_frame = dev->wq_in_frame; |
495 | ||
496 | if (dev->wq_in_error) | |
c46ee386 | 497 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, NULL, |
4849f85e | 498 | dev->wq_in_error); |
c46ee386 AAJ |
499 | else |
500 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, | |
501 | PN533_FRAME_CMD_PARAMS_PTR(in_frame), | |
502 | PN533_FRAME_CMD_PARAMS_LEN(in_frame)); | |
503 | ||
504 | if (rc != -EINPROGRESS) | |
0201ed03 | 505 | mutex_unlock(&dev->cmd_lock); |
c46ee386 AAJ |
506 | } |
507 | ||
508 | static void pn533_recv_response(struct urb *urb) | |
509 | { | |
510 | struct pn533 *dev = urb->context; | |
511 | struct pn533_frame *in_frame; | |
512 | ||
4849f85e | 513 | dev->wq_in_frame = NULL; |
c46ee386 AAJ |
514 | |
515 | switch (urb->status) { | |
516 | case 0: | |
517 | /* success */ | |
518 | break; | |
519 | case -ECONNRESET: | |
520 | case -ENOENT: | |
521 | case -ESHUTDOWN: | |
522 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
523 | " status: %d", urb->status); | |
4849f85e SO |
524 | dev->wq_in_error = urb->status; |
525 | goto sched_wq; | |
c46ee386 AAJ |
526 | default: |
527 | nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:" | |
528 | " %d", urb->status); | |
4849f85e SO |
529 | dev->wq_in_error = urb->status; |
530 | goto sched_wq; | |
c46ee386 AAJ |
531 | } |
532 | ||
533 | in_frame = dev->in_urb->transfer_buffer; | |
534 | ||
535 | if (!pn533_rx_frame_is_valid(in_frame)) { | |
536 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); | |
4849f85e SO |
537 | dev->wq_in_error = -EIO; |
538 | goto sched_wq; | |
c46ee386 AAJ |
539 | } |
540 | ||
541 | if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) { | |
542 | nfc_dev_err(&dev->interface->dev, "The received frame is not " | |
543 | "response to the last command"); | |
4849f85e SO |
544 | dev->wq_in_error = -EIO; |
545 | goto sched_wq; | |
c46ee386 AAJ |
546 | } |
547 | ||
548 | nfc_dev_dbg(&dev->interface->dev, "Received a valid frame"); | |
4849f85e SO |
549 | dev->wq_in_error = 0; |
550 | dev->wq_in_frame = in_frame; | |
c46ee386 | 551 | |
4849f85e SO |
552 | sched_wq: |
553 | queue_work(dev->wq, &dev->cmd_work); | |
c46ee386 AAJ |
554 | } |
555 | ||
556 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
557 | { | |
558 | dev->in_urb->complete = pn533_recv_response; | |
559 | ||
560 | return usb_submit_urb(dev->in_urb, flags); | |
561 | } | |
562 | ||
563 | static void pn533_recv_ack(struct urb *urb) | |
564 | { | |
565 | struct pn533 *dev = urb->context; | |
566 | struct pn533_frame *in_frame; | |
567 | int rc; | |
568 | ||
569 | switch (urb->status) { | |
570 | case 0: | |
571 | /* success */ | |
572 | break; | |
573 | case -ECONNRESET: | |
574 | case -ENOENT: | |
575 | case -ESHUTDOWN: | |
576 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
577 | " status: %d", urb->status); | |
4849f85e SO |
578 | dev->wq_in_error = urb->status; |
579 | goto sched_wq; | |
c46ee386 AAJ |
580 | default: |
581 | nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:" | |
582 | " %d", urb->status); | |
4849f85e SO |
583 | dev->wq_in_error = urb->status; |
584 | goto sched_wq; | |
c46ee386 AAJ |
585 | } |
586 | ||
587 | in_frame = dev->in_urb->transfer_buffer; | |
588 | ||
589 | if (!pn533_rx_frame_is_ack(in_frame)) { | |
590 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); | |
4849f85e SO |
591 | dev->wq_in_error = -EIO; |
592 | goto sched_wq; | |
c46ee386 AAJ |
593 | } |
594 | ||
595 | nfc_dev_dbg(&dev->interface->dev, "Received a valid ack"); | |
596 | ||
597 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); | |
598 | if (rc) { | |
599 | nfc_dev_err(&dev->interface->dev, "usb_submit_urb failed with" | |
600 | " result %d", rc); | |
4849f85e SO |
601 | dev->wq_in_error = rc; |
602 | goto sched_wq; | |
c46ee386 AAJ |
603 | } |
604 | ||
605 | return; | |
606 | ||
4849f85e SO |
607 | sched_wq: |
608 | dev->wq_in_frame = NULL; | |
609 | queue_work(dev->wq, &dev->cmd_work); | |
c46ee386 AAJ |
610 | } |
611 | ||
612 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
613 | { | |
614 | dev->in_urb->complete = pn533_recv_ack; | |
615 | ||
616 | return usb_submit_urb(dev->in_urb, flags); | |
617 | } | |
618 | ||
619 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
620 | { | |
621 | int rc; | |
622 | ||
623 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
624 | ||
625 | pn533_tx_frame_ack(dev->out_frame); | |
626 | ||
627 | dev->out_urb->transfer_buffer = dev->out_frame; | |
628 | dev->out_urb->transfer_buffer_length = PN533_FRAME_ACK_SIZE; | |
629 | rc = usb_submit_urb(dev->out_urb, flags); | |
630 | ||
631 | return rc; | |
632 | } | |
633 | ||
634 | static int __pn533_send_cmd_frame_async(struct pn533 *dev, | |
635 | struct pn533_frame *out_frame, | |
636 | struct pn533_frame *in_frame, | |
637 | int in_frame_len, | |
638 | pn533_cmd_complete_t cmd_complete, | |
639 | void *arg, gfp_t flags) | |
640 | { | |
641 | int rc; | |
642 | ||
643 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", | |
644 | PN533_FRAME_CMD(out_frame)); | |
645 | ||
646 | dev->cmd = PN533_FRAME_CMD(out_frame); | |
647 | dev->cmd_complete = cmd_complete; | |
648 | dev->cmd_complete_arg = arg; | |
649 | ||
650 | dev->out_urb->transfer_buffer = out_frame; | |
651 | dev->out_urb->transfer_buffer_length = | |
652 | PN533_FRAME_SIZE(out_frame); | |
653 | ||
654 | dev->in_urb->transfer_buffer = in_frame; | |
655 | dev->in_urb->transfer_buffer_length = in_frame_len; | |
656 | ||
657 | rc = usb_submit_urb(dev->out_urb, flags); | |
658 | if (rc) | |
659 | return rc; | |
660 | ||
661 | rc = pn533_submit_urb_for_ack(dev, flags); | |
662 | if (rc) | |
663 | goto error; | |
664 | ||
665 | return 0; | |
666 | ||
667 | error: | |
668 | usb_unlink_urb(dev->out_urb); | |
669 | return rc; | |
670 | } | |
671 | ||
672 | static int pn533_send_cmd_frame_async(struct pn533 *dev, | |
673 | struct pn533_frame *out_frame, | |
674 | struct pn533_frame *in_frame, | |
675 | int in_frame_len, | |
676 | pn533_cmd_complete_t cmd_complete, | |
677 | void *arg, gfp_t flags) | |
678 | { | |
679 | int rc; | |
680 | ||
681 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
682 | ||
0201ed03 | 683 | if (!mutex_trylock(&dev->cmd_lock)) |
c46ee386 AAJ |
684 | return -EBUSY; |
685 | ||
686 | rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame, | |
687 | in_frame_len, cmd_complete, arg, flags); | |
688 | if (rc) | |
689 | goto error; | |
690 | ||
691 | return 0; | |
692 | error: | |
0201ed03 | 693 | mutex_unlock(&dev->cmd_lock); |
c46ee386 AAJ |
694 | return rc; |
695 | } | |
696 | ||
697 | struct pn533_sync_cmd_response { | |
698 | int rc; | |
699 | struct completion done; | |
700 | }; | |
701 | ||
702 | static int pn533_sync_cmd_complete(struct pn533 *dev, void *_arg, | |
703 | u8 *params, int params_len) | |
704 | { | |
705 | struct pn533_sync_cmd_response *arg = _arg; | |
706 | ||
707 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
708 | ||
709 | arg->rc = 0; | |
710 | ||
711 | if (params_len < 0) /* error */ | |
712 | arg->rc = params_len; | |
713 | ||
714 | complete(&arg->done); | |
715 | ||
716 | return 0; | |
717 | } | |
718 | ||
719 | static int pn533_send_cmd_frame_sync(struct pn533 *dev, | |
720 | struct pn533_frame *out_frame, | |
721 | struct pn533_frame *in_frame, | |
722 | int in_frame_len) | |
723 | { | |
724 | int rc; | |
725 | struct pn533_sync_cmd_response arg; | |
726 | ||
727 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
728 | ||
729 | init_completion(&arg.done); | |
730 | ||
731 | rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, in_frame_len, | |
732 | pn533_sync_cmd_complete, &arg, GFP_KERNEL); | |
733 | if (rc) | |
734 | return rc; | |
735 | ||
736 | wait_for_completion(&arg.done); | |
737 | ||
738 | return arg.rc; | |
739 | } | |
740 | ||
741 | static void pn533_send_complete(struct urb *urb) | |
742 | { | |
743 | struct pn533 *dev = urb->context; | |
744 | ||
745 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
746 | ||
747 | switch (urb->status) { | |
748 | case 0: | |
749 | /* success */ | |
750 | break; | |
751 | case -ECONNRESET: | |
752 | case -ENOENT: | |
753 | case -ESHUTDOWN: | |
754 | nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with" | |
755 | " status: %d", urb->status); | |
756 | break; | |
757 | default: | |
758 | nfc_dev_dbg(&dev->interface->dev, "Nonzero urb status received:" | |
759 | " %d", urb->status); | |
760 | } | |
761 | } | |
762 | ||
763 | struct pn533_target_type_a { | |
764 | __be16 sens_res; | |
765 | u8 sel_res; | |
766 | u8 nfcid_len; | |
767 | u8 nfcid_data[]; | |
768 | } __packed; | |
769 | ||
770 | ||
771 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
772 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
773 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
774 | ||
775 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
776 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
777 | ||
778 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
779 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
780 | ||
781 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
782 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
783 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
784 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
785 | ||
786 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
787 | int target_data_len) | |
788 | { | |
789 | u8 ssd; | |
790 | u8 platconf; | |
791 | ||
792 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
793 | return false; | |
794 | ||
795 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
796 | the values are not being used */ | |
797 | ||
798 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
799 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
800 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
801 | ||
802 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
803 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || | |
804 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
805 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
806 | return false; | |
807 | ||
808 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
809 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
810 | return false; | |
811 | ||
812 | return true; | |
813 | } | |
814 | ||
815 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
816 | int tgt_data_len) | |
817 | { | |
818 | struct pn533_target_type_a *tgt_type_a; | |
819 | ||
820 | tgt_type_a = (struct pn533_target_type_a *) tgt_data; | |
821 | ||
822 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
823 | return -EPROTO; | |
824 | ||
825 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
826 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
827 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
828 | break; | |
829 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
830 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
831 | break; | |
832 | case PN533_TYPE_A_SEL_PROT_DEP: | |
833 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
834 | break; | |
835 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
836 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
837 | NFC_PROTO_NFC_DEP_MASK; | |
838 | break; | |
839 | } | |
840 | ||
841 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
842 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
843 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
844 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
845 | |
846 | return 0; | |
847 | } | |
848 | ||
849 | struct pn533_target_felica { | |
850 | u8 pol_res; | |
851 | u8 opcode; | |
852 | u8 nfcid2[8]; | |
853 | u8 pad[8]; | |
854 | /* optional */ | |
855 | u8 syst_code[]; | |
856 | } __packed; | |
857 | ||
858 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
859 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
860 | ||
861 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
862 | int target_data_len) | |
863 | { | |
864 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
865 | return false; | |
866 | ||
867 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
868 | return false; | |
869 | ||
870 | return true; | |
871 | } | |
872 | ||
873 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
874 | int tgt_data_len) | |
875 | { | |
876 | struct pn533_target_felica *tgt_felica; | |
877 | ||
878 | tgt_felica = (struct pn533_target_felica *) tgt_data; | |
879 | ||
880 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
881 | return -EPROTO; | |
882 | ||
883 | if (tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1 && | |
884 | tgt_felica->nfcid2[1] == | |
885 | PN533_FELICA_SENSF_NFCID2_DEP_B2) | |
886 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
887 | else | |
888 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
889 | ||
7975754f SO |
890 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
891 | nfc_tgt->sensf_res_len = 9; | |
892 | ||
c46ee386 AAJ |
893 | return 0; |
894 | } | |
895 | ||
896 | struct pn533_target_jewel { | |
897 | __be16 sens_res; | |
898 | u8 jewelid[4]; | |
899 | } __packed; | |
900 | ||
901 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
902 | int target_data_len) | |
903 | { | |
904 | u8 ssd; | |
905 | u8 platconf; | |
906 | ||
907 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
908 | return false; | |
909 | ||
910 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
911 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
912 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
913 | ||
914 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
915 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || | |
916 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
917 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
918 | return false; | |
919 | ||
920 | return true; | |
921 | } | |
922 | ||
923 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
924 | int tgt_data_len) | |
925 | { | |
926 | struct pn533_target_jewel *tgt_jewel; | |
927 | ||
928 | tgt_jewel = (struct pn533_target_jewel *) tgt_data; | |
929 | ||
930 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
931 | return -EPROTO; | |
932 | ||
933 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
934 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
935 | nfc_tgt->nfcid1_len = 4; |
936 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
937 | |
938 | return 0; | |
939 | } | |
940 | ||
941 | struct pn533_type_b_prot_info { | |
942 | u8 bitrate; | |
943 | u8 fsci_type; | |
944 | u8 fwi_adc_fo; | |
945 | } __packed; | |
946 | ||
947 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
948 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
949 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
950 | ||
951 | struct pn533_type_b_sens_res { | |
952 | u8 opcode; | |
953 | u8 nfcid[4]; | |
954 | u8 appdata[4]; | |
955 | struct pn533_type_b_prot_info prot_info; | |
956 | } __packed; | |
957 | ||
958 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
959 | ||
960 | struct pn533_target_type_b { | |
961 | struct pn533_type_b_sens_res sensb_res; | |
962 | u8 attrib_res_len; | |
963 | u8 attrib_res[]; | |
964 | } __packed; | |
965 | ||
966 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
967 | int target_data_len) | |
968 | { | |
969 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
970 | return false; | |
971 | ||
972 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
973 | return false; | |
974 | ||
975 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
976 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
977 | return false; | |
978 | ||
979 | return true; | |
980 | } | |
981 | ||
982 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
983 | int tgt_data_len) | |
984 | { | |
985 | struct pn533_target_type_b *tgt_type_b; | |
986 | ||
987 | tgt_type_b = (struct pn533_target_type_b *) tgt_data; | |
988 | ||
989 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
990 | return -EPROTO; | |
991 | ||
01d719a2 | 992 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
993 | |
994 | return 0; | |
995 | } | |
996 | ||
997 | struct pn533_poll_response { | |
998 | u8 nbtg; | |
999 | u8 tg; | |
1000 | u8 target_data[]; | |
1001 | } __packed; | |
1002 | ||
1003 | static int pn533_target_found(struct pn533 *dev, | |
1004 | struct pn533_poll_response *resp, int resp_len) | |
1005 | { | |
1006 | int target_data_len; | |
1007 | struct nfc_target nfc_tgt; | |
1008 | int rc; | |
1009 | ||
1010 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
1011 | dev->poll_mod_curr); | |
1012 | ||
1013 | if (resp->tg != 1) | |
1014 | return -EPROTO; | |
1015 | ||
98b3ac1b SO |
1016 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1017 | ||
c46ee386 AAJ |
1018 | target_data_len = resp_len - sizeof(struct pn533_poll_response); |
1019 | ||
1020 | switch (dev->poll_mod_curr) { | |
1021 | case PN533_POLL_MOD_106KBPS_A: | |
1022 | rc = pn533_target_found_type_a(&nfc_tgt, resp->target_data, | |
1023 | target_data_len); | |
1024 | break; | |
1025 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1026 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1027 | rc = pn533_target_found_felica(&nfc_tgt, resp->target_data, | |
1028 | target_data_len); | |
1029 | break; | |
1030 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
1031 | rc = pn533_target_found_jewel(&nfc_tgt, resp->target_data, | |
1032 | target_data_len); | |
1033 | break; | |
1034 | case PN533_POLL_MOD_847KBPS_B: | |
1035 | rc = pn533_target_found_type_b(&nfc_tgt, resp->target_data, | |
1036 | target_data_len); | |
1037 | break; | |
1038 | default: | |
1039 | nfc_dev_err(&dev->interface->dev, "Unknown current poll" | |
1040 | " modulation"); | |
1041 | return -EPROTO; | |
1042 | } | |
1043 | ||
1044 | if (rc) | |
1045 | return rc; | |
1046 | ||
1047 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
1048 | nfc_dev_dbg(&dev->interface->dev, "The target found does not" | |
1049 | " have the desired protocol"); | |
1050 | return -EAGAIN; | |
1051 | } | |
1052 | ||
1053 | nfc_dev_dbg(&dev->interface->dev, "Target found - supported protocols: " | |
1054 | "0x%x", nfc_tgt.supported_protocols); | |
1055 | ||
1056 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1057 | ||
1058 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1059 | ||
1060 | return 0; | |
1061 | } | |
1062 | ||
6fbbdc16 SO |
1063 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1064 | { | |
1065 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1066 | } | |
1067 | ||
c46ee386 AAJ |
1068 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1069 | { | |
1070 | dev->poll_mod_count = 0; | |
1071 | } | |
1072 | ||
1073 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1074 | { | |
1075 | dev->poll_mod_active[dev->poll_mod_count] = | |
1076 | (struct pn533_poll_modulations *) &poll_mod[mod_index]; | |
1077 | dev->poll_mod_count++; | |
1078 | } | |
1079 | ||
6fbbdc16 SO |
1080 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1081 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1082 | { |
1083 | pn533_poll_reset_mod_list(dev); | |
1084 | ||
6fbbdc16 SO |
1085 | if (im_protocols & NFC_PROTO_MIFARE_MASK |
1086 | || im_protocols & NFC_PROTO_ISO14443_MASK | |
1087 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) | |
c46ee386 AAJ |
1088 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1089 | ||
6fbbdc16 SO |
1090 | if (im_protocols & NFC_PROTO_FELICA_MASK |
1091 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1092 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1093 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1094 | } | |
1095 | ||
6fbbdc16 | 1096 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1097 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1098 | ||
01d719a2 | 1099 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1100 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1101 | |
6fbbdc16 SO |
1102 | if (tm_protocols) |
1103 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1104 | } |
1105 | ||
1106 | static int pn533_start_poll_complete(struct pn533 *dev, void *arg, | |
6fbbdc16 | 1107 | u8 *params, int params_len) |
c46ee386 AAJ |
1108 | { |
1109 | struct pn533_poll_response *resp; | |
c46ee386 AAJ |
1110 | int rc; |
1111 | ||
1112 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1113 | ||
c46ee386 AAJ |
1114 | resp = (struct pn533_poll_response *) params; |
1115 | if (resp->nbtg) { | |
1116 | rc = pn533_target_found(dev, resp, params_len); | |
1117 | ||
1118 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1119 | if (rc == 0) { |
1120 | pn533_poll_reset_mod_list(dev); | |
1121 | return 0; | |
1122 | } | |
c46ee386 AAJ |
1123 | } |
1124 | ||
6fbbdc16 | 1125 | return -EAGAIN; |
c46ee386 AAJ |
1126 | } |
1127 | ||
ad3823ce SO |
1128 | static int pn533_init_target_frame(struct pn533_frame *frame, |
1129 | u8 *gb, size_t gb_len) | |
1130 | { | |
1131 | struct pn533_cmd_init_target *cmd; | |
1132 | size_t cmd_len; | |
51d9e803 SO |
1133 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1134 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1135 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1136 | 0xff, 0xff}; /* System code */ | |
1137 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ | |
1138 | 0x0, 0x0, 0x0, | |
1139 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce SO |
1140 | |
1141 | cmd_len = sizeof(struct pn533_cmd_init_target) + gb_len + 1; | |
1142 | cmd = kzalloc(cmd_len, GFP_KERNEL); | |
1143 | if (cmd == NULL) | |
1144 | return -ENOMEM; | |
1145 | ||
1146 | pn533_tx_frame_init(frame, PN533_CMD_TG_INIT_AS_TARGET); | |
1147 | ||
1148 | /* DEP support only */ | |
1149 | cmd->mode |= PN533_INIT_TARGET_DEP; | |
51d9e803 SO |
1150 | |
1151 | /* Felica params */ | |
1152 | memcpy(cmd->felica, felica_params, 18); | |
1153 | get_random_bytes(cmd->felica + 2, 6); | |
1154 | ||
1155 | /* NFCID3 */ | |
1156 | memset(cmd->nfcid3, 0, 10); | |
1157 | memcpy(cmd->nfcid3, cmd->felica, 8); | |
1158 | ||
1159 | /* MIFARE params */ | |
1160 | memcpy(cmd->mifare, mifare_params, 6); | |
1161 | ||
1162 | /* General bytes */ | |
ad3823ce SO |
1163 | cmd->gb_len = gb_len; |
1164 | memcpy(cmd->gb, gb, gb_len); | |
51d9e803 | 1165 | |
ad3823ce SO |
1166 | /* Len Tk */ |
1167 | cmd->gb[gb_len] = 0; | |
1168 | ||
1169 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), cmd, cmd_len); | |
51d9e803 | 1170 | |
ad3823ce SO |
1171 | frame->datalen += cmd_len; |
1172 | ||
1173 | pn533_tx_frame_finish(frame); | |
1174 | ||
51d9e803 SO |
1175 | kfree(cmd); |
1176 | ||
ad3823ce SO |
1177 | return 0; |
1178 | } | |
1179 | ||
103b34cf SO |
1180 | #define PN533_CMD_DATAEXCH_HEAD_LEN (sizeof(struct pn533_frame) + 3) |
1181 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 | |
1182 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
1183 | u8 *params, int params_len) | |
1184 | { | |
1185 | struct sk_buff *skb_resp = arg; | |
1186 | struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data; | |
1187 | ||
1188 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1189 | ||
1190 | if (params_len < 0) { | |
1191 | nfc_dev_err(&dev->interface->dev, | |
1192 | "Error %d when starting as a target", | |
1193 | params_len); | |
1194 | ||
1195 | return params_len; | |
1196 | } | |
1197 | ||
1198 | if (params_len > 0 && params[0] != 0) { | |
1199 | nfc_tm_deactivated(dev->nfc_dev); | |
1200 | ||
51ad304c SO |
1201 | dev->tgt_mode = 0; |
1202 | ||
103b34cf SO |
1203 | kfree_skb(skb_resp); |
1204 | return 0; | |
1205 | } | |
1206 | ||
1207 | skb_put(skb_resp, PN533_FRAME_SIZE(in_frame)); | |
1208 | skb_pull(skb_resp, PN533_CMD_DATAEXCH_HEAD_LEN); | |
1209 | skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_SIZE); | |
1210 | ||
1211 | return nfc_tm_data_received(dev->nfc_dev, skb_resp); | |
1212 | } | |
1213 | ||
1214 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1215 | { | |
1216 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
1217 | struct pn533_frame *in_frame; | |
1218 | struct sk_buff *skb_resp; | |
1219 | size_t skb_resp_len; | |
1220 | ||
1221 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1222 | ||
1223 | skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN + | |
1224 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
1225 | PN533_FRAME_TAIL_SIZE; | |
1226 | ||
1227 | skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL); | |
1228 | if (!skb_resp) | |
1229 | return; | |
1230 | ||
1231 | in_frame = (struct pn533_frame *)skb_resp->data; | |
1232 | ||
1233 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_TG_GET_DATA); | |
1234 | pn533_tx_frame_finish(dev->out_frame); | |
1235 | ||
1236 | pn533_send_cmd_frame_async(dev, dev->out_frame, in_frame, | |
1237 | skb_resp_len, | |
1238 | pn533_tm_get_data_complete, | |
1239 | skb_resp, GFP_KERNEL); | |
1240 | ||
1241 | return; | |
1242 | } | |
1243 | ||
fc40a8c1 | 1244 | #define ATR_REQ_GB_OFFSET 17 |
ad3823ce SO |
1245 | static int pn533_init_target_complete(struct pn533 *dev, void *arg, |
1246 | u8 *params, int params_len) | |
fe7c5800 | 1247 | { |
ad3823ce | 1248 | struct pn533_cmd_init_target_response *resp; |
fc40a8c1 SO |
1249 | u8 frame, comm_mode = NFC_COMM_PASSIVE, *gb; |
1250 | size_t gb_len; | |
103b34cf | 1251 | int rc; |
ad3823ce SO |
1252 | |
1253 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1254 | ||
1255 | if (params_len < 0) { | |
1256 | nfc_dev_err(&dev->interface->dev, | |
1257 | "Error %d when starting as a target", | |
1258 | params_len); | |
1259 | ||
1260 | return params_len; | |
1261 | } | |
1262 | ||
fc40a8c1 SO |
1263 | if (params_len < ATR_REQ_GB_OFFSET + 1) |
1264 | return -EINVAL; | |
1265 | ||
ad3823ce SO |
1266 | resp = (struct pn533_cmd_init_target_response *) params; |
1267 | ||
fc40a8c1 SO |
1268 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x param len %d\n", |
1269 | resp->mode, params_len); | |
ad3823ce | 1270 | |
fc40a8c1 SO |
1271 | frame = resp->mode & PN533_INIT_TARGET_RESP_FRAME_MASK; |
1272 | if (frame == PN533_INIT_TARGET_RESP_ACTIVE) | |
1273 | comm_mode = NFC_COMM_ACTIVE; | |
1274 | ||
1275 | /* Again, only DEP */ | |
1276 | if ((resp->mode & PN533_INIT_TARGET_RESP_DEP) == 0) | |
1277 | return -EOPNOTSUPP; | |
1278 | ||
1279 | gb = resp->cmd + ATR_REQ_GB_OFFSET; | |
1280 | gb_len = params_len - (ATR_REQ_GB_OFFSET + 1); | |
1281 | ||
103b34cf SO |
1282 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1283 | comm_mode, gb, gb_len); | |
1284 | if (rc < 0) { | |
1285 | nfc_dev_err(&dev->interface->dev, | |
1286 | "Error when signaling target activation"); | |
1287 | return rc; | |
1288 | } | |
1289 | ||
51ad304c SO |
1290 | dev->tgt_mode = 1; |
1291 | ||
103b34cf SO |
1292 | queue_work(dev->wq, &dev->tg_work); |
1293 | ||
1294 | return 0; | |
fe7c5800 SO |
1295 | } |
1296 | ||
6fbbdc16 | 1297 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1298 | { |
6fbbdc16 SO |
1299 | struct pn533 *dev = (struct pn533 *) data; |
1300 | ||
1301 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1302 | ||
1303 | /* An ack will cancel the last issued command (poll) */ | |
1304 | pn533_send_ack(dev, GFP_ATOMIC); | |
1305 | ||
1306 | dev->cancel_listen = 1; | |
1307 | ||
0201ed03 | 1308 | mutex_unlock(&dev->cmd_lock); |
6fbbdc16 SO |
1309 | |
1310 | pn533_poll_next_mod(dev); | |
1311 | ||
1312 | queue_work(dev->wq, &dev->poll_work); | |
1313 | } | |
1314 | ||
1315 | static int pn533_poll_complete(struct pn533 *dev, void *arg, | |
1316 | u8 *params, int params_len) | |
1317 | { | |
1318 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1319 | int rc; |
1320 | ||
6fbbdc16 | 1321 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1322 | |
6fbbdc16 SO |
1323 | if (params_len == -ENOENT) { |
1324 | if (dev->poll_mod_count != 0) | |
1325 | return 0; | |
ad3823ce | 1326 | |
6fbbdc16 SO |
1327 | nfc_dev_err(&dev->interface->dev, |
1328 | "Polling operation has been stopped"); | |
ad3823ce | 1329 | |
6fbbdc16 SO |
1330 | goto stop_poll; |
1331 | } | |
ad3823ce | 1332 | |
6fbbdc16 | 1333 | if (params_len < 0) { |
ad3823ce | 1334 | nfc_dev_err(&dev->interface->dev, |
6fbbdc16 | 1335 | "Error %d when running poll", params_len); |
ad3823ce | 1336 | |
6fbbdc16 SO |
1337 | goto stop_poll; |
1338 | } | |
ad3823ce | 1339 | |
6fbbdc16 SO |
1340 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1341 | ||
1342 | if (cur_mod->len == 0) { | |
1343 | del_timer(&dev->listen_timer); | |
1344 | ||
1345 | return pn533_init_target_complete(dev, arg, params, params_len); | |
1346 | } else { | |
1347 | rc = pn533_start_poll_complete(dev, arg, params, params_len); | |
1348 | if (!rc) | |
1349 | return rc; | |
1350 | } | |
1351 | ||
1352 | pn533_poll_next_mod(dev); | |
1353 | ||
1354 | queue_work(dev->wq, &dev->poll_work); | |
1355 | ||
1356 | return 0; | |
1357 | ||
1358 | stop_poll: | |
1359 | pn533_poll_reset_mod_list(dev); | |
1360 | dev->poll_protocols = 0; | |
1361 | return 0; | |
ad3823ce SO |
1362 | } |
1363 | ||
6fbbdc16 SO |
1364 | static void pn533_build_poll_frame(struct pn533 *dev, |
1365 | struct pn533_frame *frame, | |
1366 | struct pn533_poll_modulations *mod) | |
c46ee386 | 1367 | { |
6fbbdc16 | 1368 | nfc_dev_dbg(&dev->interface->dev, "mod len %d\n", mod->len); |
c46ee386 | 1369 | |
6fbbdc16 SO |
1370 | if (mod->len == 0) { |
1371 | /* Listen mode */ | |
1372 | pn533_init_target_frame(frame, dev->gb, dev->gb_len); | |
1373 | } else { | |
1374 | /* Polling mode */ | |
1375 | pn533_tx_frame_init(frame, PN533_CMD_IN_LIST_PASSIVE_TARGET); | |
c46ee386 | 1376 | |
6fbbdc16 SO |
1377 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), &mod->data, mod->len); |
1378 | frame->datalen += mod->len; | |
c46ee386 | 1379 | |
6fbbdc16 | 1380 | pn533_tx_frame_finish(frame); |
c46ee386 | 1381 | } |
6fbbdc16 | 1382 | } |
c46ee386 | 1383 | |
6fbbdc16 SO |
1384 | static int pn533_send_poll_frame(struct pn533 *dev) |
1385 | { | |
1386 | struct pn533_poll_modulations *cur_mod; | |
1387 | int rc; | |
c46ee386 | 1388 | |
6fbbdc16 | 1389 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1390 | |
6fbbdc16 | 1391 | pn533_build_poll_frame(dev, dev->out_frame, cur_mod); |
c46ee386 AAJ |
1392 | |
1393 | rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame, | |
6fbbdc16 | 1394 | dev->in_maxlen, pn533_poll_complete, |
c46ee386 | 1395 | NULL, GFP_KERNEL); |
6fbbdc16 SO |
1396 | if (rc) |
1397 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); | |
c46ee386 | 1398 | |
6fbbdc16 SO |
1399 | return rc; |
1400 | } | |
1401 | ||
1402 | static void pn533_wq_poll(struct work_struct *work) | |
1403 | { | |
1404 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1405 | struct pn533_poll_modulations *cur_mod; | |
1406 | int rc; | |
1407 | ||
1408 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1409 | ||
1410 | nfc_dev_dbg(&dev->interface->dev, | |
1411 | "%s cancel_listen %d modulation len %d", | |
1412 | __func__, dev->cancel_listen, cur_mod->len); | |
1413 | ||
1414 | if (dev->cancel_listen == 1) { | |
1415 | dev->cancel_listen = 0; | |
1416 | usb_kill_urb(dev->in_urb); | |
c46ee386 AAJ |
1417 | } |
1418 | ||
6fbbdc16 SO |
1419 | rc = pn533_send_poll_frame(dev); |
1420 | if (rc) | |
1421 | return; | |
c46ee386 | 1422 | |
6fbbdc16 SO |
1423 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1424 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1425 | |
6fbbdc16 | 1426 | return; |
c46ee386 AAJ |
1427 | } |
1428 | ||
fe7c5800 SO |
1429 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1430 | u32 im_protocols, u32 tm_protocols) | |
1431 | { | |
1432 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1433 | ||
1434 | nfc_dev_dbg(&dev->interface->dev, | |
1435 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1436 | __func__, im_protocols, tm_protocols); | |
1437 | ||
1438 | if (dev->tgt_active_prot) { | |
1439 | nfc_dev_err(&dev->interface->dev, | |
1440 | "Cannot poll with a target already activated"); | |
1441 | return -EBUSY; | |
1442 | } | |
1443 | ||
51ad304c SO |
1444 | if (dev->tgt_mode) { |
1445 | nfc_dev_err(&dev->interface->dev, | |
1446 | "Cannot poll while already being activated"); | |
1447 | return -EBUSY; | |
1448 | } | |
1449 | ||
6fbbdc16 SO |
1450 | if (tm_protocols) { |
1451 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1452 | if (dev->gb == NULL) | |
1453 | tm_protocols = 0; | |
1454 | } | |
ad3823ce | 1455 | |
6fbbdc16 SO |
1456 | dev->poll_mod_curr = 0; |
1457 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1458 | dev->poll_protocols = im_protocols; | |
1459 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1460 | |
6fbbdc16 | 1461 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1462 | } |
1463 | ||
c46ee386 AAJ |
1464 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1465 | { | |
1466 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1467 | ||
1468 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1469 | ||
6fbbdc16 SO |
1470 | del_timer(&dev->listen_timer); |
1471 | ||
c46ee386 AAJ |
1472 | if (!dev->poll_mod_count) { |
1473 | nfc_dev_dbg(&dev->interface->dev, "Polling operation was not" | |
1474 | " running"); | |
1475 | return; | |
1476 | } | |
1477 | ||
1478 | /* An ack will cancel the last issued command (poll) */ | |
1479 | pn533_send_ack(dev, GFP_KERNEL); | |
1480 | ||
1481 | /* prevent pn533_start_poll_complete to issue a new poll meanwhile */ | |
1482 | usb_kill_urb(dev->in_urb); | |
7c2a04a9 SO |
1483 | |
1484 | pn533_poll_reset_mod_list(dev); | |
c46ee386 AAJ |
1485 | } |
1486 | ||
1487 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1488 | { | |
1489 | struct pn533_cmd_activate_param param; | |
1490 | struct pn533_cmd_activate_response *resp; | |
541d920b | 1491 | u16 gt_len; |
c46ee386 AAJ |
1492 | int rc; |
1493 | ||
1494 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1495 | ||
1496 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_ATR); | |
1497 | ||
1498 | param.tg = 1; | |
1499 | param.next = 0; | |
1500 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), ¶m, | |
1501 | sizeof(struct pn533_cmd_activate_param)); | |
1502 | dev->out_frame->datalen += sizeof(struct pn533_cmd_activate_param); | |
1503 | ||
1504 | pn533_tx_frame_finish(dev->out_frame); | |
1505 | ||
1506 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
1507 | dev->in_maxlen); | |
1508 | if (rc) | |
1509 | return rc; | |
1510 | ||
1511 | resp = (struct pn533_cmd_activate_response *) | |
1512 | PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame); | |
1513 | rc = resp->status & PN533_CMD_RET_MASK; | |
1514 | if (rc != PN533_CMD_RET_SUCCESS) | |
1515 | return -EIO; | |
1516 | ||
541d920b SO |
1517 | /* ATR_RES general bytes are located at offset 16 */ |
1518 | gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 16; | |
1519 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, resp->gt, gt_len); | |
1520 | ||
1521 | return rc; | |
c46ee386 AAJ |
1522 | } |
1523 | ||
90099433 EL |
1524 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1525 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1526 | { |
1527 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1528 | int rc; | |
1529 | ||
1530 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
1531 | protocol); | |
1532 | ||
1533 | if (dev->poll_mod_count) { | |
1534 | nfc_dev_err(&dev->interface->dev, "Cannot activate while" | |
1535 | " polling"); | |
1536 | return -EBUSY; | |
1537 | } | |
1538 | ||
1539 | if (dev->tgt_active_prot) { | |
1540 | nfc_dev_err(&dev->interface->dev, "There is already an active" | |
1541 | " target"); | |
1542 | return -EBUSY; | |
1543 | } | |
1544 | ||
1545 | if (!dev->tgt_available_prots) { | |
1546 | nfc_dev_err(&dev->interface->dev, "There is no available target" | |
1547 | " to activate"); | |
1548 | return -EINVAL; | |
1549 | } | |
1550 | ||
1551 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
1552 | nfc_dev_err(&dev->interface->dev, "The target does not support" | |
1553 | " the requested protocol %u", protocol); | |
1554 | return -EINVAL; | |
1555 | } | |
1556 | ||
1557 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1558 | rc = pn533_activate_target_nfcdep(dev); | |
1559 | if (rc) { | |
1560 | nfc_dev_err(&dev->interface->dev, "Error %d when" | |
1561 | " activating target with" | |
1562 | " NFC_DEP protocol", rc); | |
1563 | return rc; | |
1564 | } | |
1565 | } | |
1566 | ||
1567 | dev->tgt_active_prot = protocol; | |
1568 | dev->tgt_available_prots = 0; | |
1569 | ||
1570 | return 0; | |
1571 | } | |
1572 | ||
90099433 EL |
1573 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1574 | struct nfc_target *target) | |
c46ee386 AAJ |
1575 | { |
1576 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1577 | u8 tg; | |
1578 | u8 status; | |
1579 | int rc; | |
1580 | ||
1581 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1582 | ||
1583 | if (!dev->tgt_active_prot) { | |
1584 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
1585 | return; | |
1586 | } | |
1587 | ||
1588 | dev->tgt_active_prot = 0; | |
1589 | ||
6ff73fd2 SO |
1590 | skb_queue_purge(&dev->resp_q); |
1591 | ||
c46ee386 AAJ |
1592 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_RELEASE); |
1593 | ||
1594 | tg = 1; | |
1595 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), &tg, sizeof(u8)); | |
1596 | dev->out_frame->datalen += sizeof(u8); | |
1597 | ||
1598 | pn533_tx_frame_finish(dev->out_frame); | |
1599 | ||
1600 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
1601 | dev->in_maxlen); | |
1602 | if (rc) { | |
1603 | nfc_dev_err(&dev->interface->dev, "Error when sending release" | |
1604 | " command to the controller"); | |
1605 | return; | |
1606 | } | |
1607 | ||
1608 | status = PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame)[0]; | |
1609 | rc = status & PN533_CMD_RET_MASK; | |
1610 | if (rc != PN533_CMD_RET_SUCCESS) | |
1611 | nfc_dev_err(&dev->interface->dev, "Error 0x%x when releasing" | |
1612 | " the target", rc); | |
1613 | ||
1614 | return; | |
1615 | } | |
1616 | ||
361f3cb7 SO |
1617 | |
1618 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
1619 | u8 *params, int params_len) | |
1620 | { | |
1621 | struct pn533_cmd_jump_dep *cmd; | |
1622 | struct pn533_cmd_jump_dep_response *resp; | |
1623 | struct nfc_target nfc_target; | |
1624 | u8 target_gt_len; | |
1625 | int rc; | |
1626 | ||
1627 | if (params_len == -ENOENT) { | |
1628 | nfc_dev_dbg(&dev->interface->dev, ""); | |
1629 | return 0; | |
1630 | } | |
1631 | ||
1632 | if (params_len < 0) { | |
1633 | nfc_dev_err(&dev->interface->dev, | |
1634 | "Error %d when bringing DEP link up", | |
1635 | params_len); | |
1636 | return 0; | |
1637 | } | |
1638 | ||
1639 | if (dev->tgt_available_prots && | |
1640 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
1641 | nfc_dev_err(&dev->interface->dev, | |
1642 | "The target does not support DEP"); | |
1643 | return -EINVAL; | |
1644 | } | |
1645 | ||
1646 | resp = (struct pn533_cmd_jump_dep_response *) params; | |
1647 | cmd = (struct pn533_cmd_jump_dep *) arg; | |
1648 | rc = resp->status & PN533_CMD_RET_MASK; | |
1649 | if (rc != PN533_CMD_RET_SUCCESS) { | |
1650 | nfc_dev_err(&dev->interface->dev, | |
1651 | "Bringing DEP link up failed %d", rc); | |
1652 | return 0; | |
1653 | } | |
1654 | ||
1655 | if (!dev->tgt_available_prots) { | |
1656 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); | |
1657 | ||
1658 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 SO |
1659 | nfc_target.nfcid1_len = 10; |
1660 | memcpy(nfc_target.nfcid1, resp->nfcid3t, nfc_target.nfcid1_len); | |
361f3cb7 SO |
1661 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
1662 | if (rc) | |
1663 | return 0; | |
1664 | ||
1665 | dev->tgt_available_prots = 0; | |
1666 | } | |
1667 | ||
1668 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
1669 | ||
1670 | /* ATR_RES general bytes are located at offset 17 */ | |
1671 | target_gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 17; | |
1672 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, | |
1673 | resp->gt, target_gt_len); | |
1674 | if (rc == 0) | |
1675 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
1676 | dev->nfc_dev->targets[0].idx, | |
1677 | !cmd->active, NFC_RF_INITIATOR); | |
1678 | ||
1679 | return 0; | |
1680 | } | |
1681 | ||
41a8ec49 SO |
1682 | static int pn533_mod_to_baud(struct pn533 *dev) |
1683 | { | |
1684 | switch (dev->poll_mod_curr) { | |
1685 | case PN533_POLL_MOD_106KBPS_A: | |
1686 | return 0; | |
1687 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1688 | return 1; | |
1689 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1690 | return 2; | |
1691 | default: | |
1692 | return -EINVAL; | |
1693 | } | |
1694 | } | |
1695 | ||
d7f3345d | 1696 | #define PASSIVE_DATA_LEN 5 |
90099433 | 1697 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
47807d3d | 1698 | u8 comm_mode, u8* gb, size_t gb_len) |
361f3cb7 SO |
1699 | { |
1700 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1701 | struct pn533_cmd_jump_dep *cmd; | |
d7f3345d SO |
1702 | u8 cmd_len, *data_ptr; |
1703 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; | |
41a8ec49 | 1704 | int rc, baud; |
361f3cb7 SO |
1705 | |
1706 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1707 | ||
361f3cb7 SO |
1708 | if (dev->poll_mod_count) { |
1709 | nfc_dev_err(&dev->interface->dev, | |
1710 | "Cannot bring the DEP link up while polling"); | |
1711 | return -EBUSY; | |
1712 | } | |
1713 | ||
1714 | if (dev->tgt_active_prot) { | |
1715 | nfc_dev_err(&dev->interface->dev, | |
1716 | "There is already an active target"); | |
1717 | return -EBUSY; | |
1718 | } | |
1719 | ||
41a8ec49 SO |
1720 | baud = pn533_mod_to_baud(dev); |
1721 | if (baud < 0) { | |
1722 | nfc_dev_err(&dev->interface->dev, | |
1723 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
1724 | return baud; | |
1725 | } | |
1726 | ||
47807d3d | 1727 | cmd_len = sizeof(struct pn533_cmd_jump_dep) + gb_len; |
d7f3345d SO |
1728 | if (comm_mode == NFC_COMM_PASSIVE) |
1729 | cmd_len += PASSIVE_DATA_LEN; | |
1730 | ||
361f3cb7 SO |
1731 | cmd = kzalloc(cmd_len, GFP_KERNEL); |
1732 | if (cmd == NULL) | |
1733 | return -ENOMEM; | |
1734 | ||
1735 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_JUMP_FOR_DEP); | |
1736 | ||
1737 | cmd->active = !comm_mode; | |
d7f3345d | 1738 | cmd->next = 0; |
41a8ec49 | 1739 | cmd->baud = baud; |
d7f3345d SO |
1740 | data_ptr = cmd->data; |
1741 | if (comm_mode == NFC_COMM_PASSIVE && cmd->baud > 0) { | |
1742 | memcpy(data_ptr, passive_data, PASSIVE_DATA_LEN); | |
1743 | cmd->next |= 1; | |
1744 | data_ptr += PASSIVE_DATA_LEN; | |
1745 | } | |
1746 | ||
47807d3d | 1747 | if (gb != NULL && gb_len > 0) { |
d7f3345d SO |
1748 | cmd->next |= 4; /* We have some Gi */ |
1749 | memcpy(data_ptr, gb, gb_len); | |
361f3cb7 SO |
1750 | } else { |
1751 | cmd->next = 0; | |
1752 | } | |
1753 | ||
1754 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), cmd, cmd_len); | |
1755 | dev->out_frame->datalen += cmd_len; | |
1756 | ||
1757 | pn533_tx_frame_finish(dev->out_frame); | |
1758 | ||
1759 | rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame, | |
1760 | dev->in_maxlen, pn533_in_dep_link_up_complete, | |
1761 | cmd, GFP_KERNEL); | |
1762 | if (rc) | |
1763 | goto out; | |
1764 | ||
1765 | ||
1766 | out: | |
1767 | kfree(cmd); | |
1768 | ||
1769 | return rc; | |
1770 | } | |
1771 | ||
1772 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
1773 | { | |
6fbbdc16 SO |
1774 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
1775 | ||
1776 | pn533_poll_reset_mod_list(dev); | |
1777 | ||
51ad304c SO |
1778 | if (dev->tgt_mode || dev->tgt_active_prot) { |
1779 | pn533_send_ack(dev, GFP_KERNEL); | |
1780 | usb_kill_urb(dev->in_urb); | |
1781 | } | |
1782 | ||
1783 | dev->tgt_active_prot = 0; | |
1784 | dev->tgt_mode = 0; | |
1785 | ||
1786 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
1787 | |
1788 | return 0; | |
1789 | } | |
1790 | ||
dadb06f2 SO |
1791 | static int pn533_build_tx_frame(struct pn533 *dev, struct sk_buff *skb, |
1792 | bool target) | |
c46ee386 AAJ |
1793 | { |
1794 | int payload_len = skb->len; | |
1795 | struct pn533_frame *out_frame; | |
c46ee386 AAJ |
1796 | u8 tg; |
1797 | ||
1798 | nfc_dev_dbg(&dev->interface->dev, "%s - Sending %d bytes", __func__, | |
1799 | payload_len); | |
1800 | ||
1801 | if (payload_len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { | |
1802 | /* TODO: Implement support to multi-part data exchange */ | |
1803 | nfc_dev_err(&dev->interface->dev, "Data length greater than the" | |
1804 | " max allowed: %d", | |
1805 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
1806 | return -ENOSYS; | |
1807 | } | |
1808 | ||
dadb06f2 | 1809 | if (target == true) { |
5c7b0531 | 1810 | switch (dev->device_type) { |
a1fbbf18 SO |
1811 | case PN533_DEVICE_PASORI: |
1812 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
1813 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN - 1); | |
1814 | out_frame = (struct pn533_frame *) skb->data; | |
1815 | pn533_tx_frame_init(out_frame, | |
1816 | PN533_CMD_IN_COMM_THRU); | |
1817 | ||
1818 | break; | |
1819 | } | |
1820 | ||
1821 | default: | |
5c7b0531 SO |
1822 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN); |
1823 | out_frame = (struct pn533_frame *) skb->data; | |
1824 | pn533_tx_frame_init(out_frame, | |
1825 | PN533_CMD_IN_DATA_EXCHANGE); | |
1826 | tg = 1; | |
1827 | memcpy(PN533_FRAME_CMD_PARAMS_PTR(out_frame), | |
1828 | &tg, sizeof(u8)); | |
1829 | out_frame->datalen += sizeof(u8); | |
5c7b0531 SO |
1830 | |
1831 | break; | |
5c7b0531 | 1832 | } |
c46ee386 | 1833 | |
dadb06f2 SO |
1834 | } else { |
1835 | skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN - 1); | |
1836 | out_frame = (struct pn533_frame *) skb->data; | |
1837 | pn533_tx_frame_init(out_frame, PN533_CMD_TG_SET_DATA); | |
1838 | } | |
c46ee386 | 1839 | |
c46ee386 AAJ |
1840 | |
1841 | /* The data is already in the out_frame, just update the datalen */ | |
1842 | out_frame->datalen += payload_len; | |
1843 | ||
1844 | pn533_tx_frame_finish(out_frame); | |
1845 | skb_put(skb, PN533_FRAME_TAIL_SIZE); | |
1846 | ||
1847 | return 0; | |
1848 | } | |
1849 | ||
1850 | struct pn533_data_exchange_arg { | |
1851 | struct sk_buff *skb_resp; | |
1852 | struct sk_buff *skb_out; | |
1853 | data_exchange_cb_t cb; | |
1854 | void *cb_context; | |
1855 | }; | |
1856 | ||
6ff73fd2 SO |
1857 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
1858 | { | |
1859 | struct sk_buff *skb, *tmp, *t; | |
1860 | unsigned int skb_len = 0, tmp_len = 0; | |
1861 | ||
1862 | nfc_dev_dbg(&dev->interface->dev, "%s\n", __func__); | |
1863 | ||
1864 | if (skb_queue_empty(&dev->resp_q)) | |
1865 | return NULL; | |
1866 | ||
1867 | if (skb_queue_len(&dev->resp_q) == 1) { | |
1868 | skb = skb_dequeue(&dev->resp_q); | |
1869 | goto out; | |
1870 | } | |
1871 | ||
1872 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
1873 | skb_len += tmp->len; | |
1874 | ||
1875 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
1876 | __func__, skb_len); | |
1877 | ||
1878 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
1879 | if (skb == NULL) | |
1880 | goto out; | |
1881 | ||
1882 | skb_put(skb, skb_len); | |
1883 | ||
1884 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
1885 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
1886 | tmp_len += tmp->len; | |
1887 | } | |
1888 | ||
1889 | out: | |
1890 | skb_queue_purge(&dev->resp_q); | |
1891 | ||
1892 | return skb; | |
1893 | } | |
1894 | ||
c46ee386 AAJ |
1895 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
1896 | u8 *params, int params_len) | |
1897 | { | |
1898 | struct pn533_data_exchange_arg *arg = _arg; | |
6ff73fd2 | 1899 | struct sk_buff *skb = NULL, *skb_resp = arg->skb_resp; |
c46ee386 AAJ |
1900 | struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data; |
1901 | int err = 0; | |
1902 | u8 status; | |
1903 | u8 cmd_ret; | |
1904 | ||
1905 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1906 | ||
6ff73fd2 | 1907 | dev_kfree_skb(arg->skb_out); |
c46ee386 AAJ |
1908 | |
1909 | if (params_len < 0) { /* error */ | |
1910 | err = params_len; | |
1911 | goto error; | |
1912 | } | |
1913 | ||
c46ee386 AAJ |
1914 | status = params[0]; |
1915 | ||
1916 | cmd_ret = status & PN533_CMD_RET_MASK; | |
1917 | if (cmd_ret != PN533_CMD_RET_SUCCESS) { | |
1918 | nfc_dev_err(&dev->interface->dev, "PN533 reported error %d when" | |
1919 | " exchanging data", cmd_ret); | |
1920 | err = -EIO; | |
1921 | goto error; | |
1922 | } | |
1923 | ||
6ff73fd2 SO |
1924 | skb_put(skb_resp, PN533_FRAME_SIZE(in_frame)); |
1925 | skb_pull(skb_resp, PN533_CMD_DATAEXCH_HEAD_LEN); | |
1926 | skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_SIZE); | |
1927 | skb_queue_tail(&dev->resp_q, skb_resp); | |
1928 | ||
c46ee386 | 1929 | if (status & PN533_CMD_MI_MASK) { |
6ff73fd2 SO |
1930 | queue_work(dev->wq, &dev->mi_work); |
1931 | return -EINPROGRESS; | |
c46ee386 AAJ |
1932 | } |
1933 | ||
6ff73fd2 SO |
1934 | skb = pn533_build_response(dev); |
1935 | if (skb == NULL) | |
1936 | goto error; | |
c46ee386 | 1937 | |
6ff73fd2 | 1938 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
1939 | kfree(arg); |
1940 | return 0; | |
1941 | ||
1942 | error: | |
6ff73fd2 SO |
1943 | skb_queue_purge(&dev->resp_q); |
1944 | dev_kfree_skb(skb_resp); | |
c46ee386 AAJ |
1945 | arg->cb(arg->cb_context, NULL, err); |
1946 | kfree(arg); | |
1947 | return 0; | |
1948 | } | |
1949 | ||
be9ae4ce SO |
1950 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
1951 | struct nfc_target *target, struct sk_buff *skb, | |
1952 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
1953 | { |
1954 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1955 | struct pn533_frame *out_frame, *in_frame; | |
1956 | struct pn533_data_exchange_arg *arg; | |
1957 | struct sk_buff *skb_resp; | |
1958 | int skb_resp_len; | |
1959 | int rc; | |
1960 | ||
1961 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1962 | ||
1963 | if (!dev->tgt_active_prot) { | |
1964 | nfc_dev_err(&dev->interface->dev, "Cannot exchange data if" | |
1965 | " there is no active target"); | |
1966 | rc = -EINVAL; | |
1967 | goto error; | |
1968 | } | |
1969 | ||
dadb06f2 | 1970 | rc = pn533_build_tx_frame(dev, skb, true); |
c46ee386 AAJ |
1971 | if (rc) |
1972 | goto error; | |
1973 | ||
1974 | skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN + | |
1975 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
1976 | PN533_FRAME_TAIL_SIZE; | |
1977 | ||
7c7cd3bf | 1978 | skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL); |
c46ee386 AAJ |
1979 | if (!skb_resp) { |
1980 | rc = -ENOMEM; | |
1981 | goto error; | |
1982 | } | |
1983 | ||
1984 | in_frame = (struct pn533_frame *) skb_resp->data; | |
1985 | out_frame = (struct pn533_frame *) skb->data; | |
1986 | ||
1987 | arg = kmalloc(sizeof(struct pn533_data_exchange_arg), GFP_KERNEL); | |
1988 | if (!arg) { | |
1989 | rc = -ENOMEM; | |
1990 | goto free_skb_resp; | |
1991 | } | |
1992 | ||
1993 | arg->skb_resp = skb_resp; | |
1994 | arg->skb_out = skb; | |
1995 | arg->cb = cb; | |
1996 | arg->cb_context = cb_context; | |
1997 | ||
1998 | rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, skb_resp_len, | |
1999 | pn533_data_exchange_complete, arg, | |
2000 | GFP_KERNEL); | |
2001 | if (rc) { | |
2002 | nfc_dev_err(&dev->interface->dev, "Error %d when trying to" | |
2003 | " perform data_exchange", rc); | |
2004 | goto free_arg; | |
2005 | } | |
2006 | ||
2007 | return 0; | |
2008 | ||
2009 | free_arg: | |
2010 | kfree(arg); | |
2011 | free_skb_resp: | |
2012 | kfree_skb(skb_resp); | |
2013 | error: | |
2014 | kfree_skb(skb); | |
2015 | return rc; | |
2016 | } | |
2017 | ||
dadb06f2 SO |
2018 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
2019 | u8 *params, int params_len) | |
2020 | { | |
2021 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2022 | ||
2023 | if (params_len < 0) { | |
2024 | nfc_dev_err(&dev->interface->dev, | |
2025 | "Error %d when sending data", | |
2026 | params_len); | |
2027 | ||
2028 | return params_len; | |
2029 | } | |
2030 | ||
2031 | if (params_len > 0 && params[0] != 0) { | |
2032 | nfc_tm_deactivated(dev->nfc_dev); | |
2033 | ||
51ad304c SO |
2034 | dev->tgt_mode = 0; |
2035 | ||
dadb06f2 SO |
2036 | return 0; |
2037 | } | |
2038 | ||
2039 | queue_work(dev->wq, &dev->tg_work); | |
2040 | ||
2041 | return 0; | |
2042 | } | |
2043 | ||
2044 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2045 | { | |
2046 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
2047 | struct pn533_frame *out_frame; | |
2048 | int rc; | |
2049 | ||
2050 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2051 | ||
2052 | rc = pn533_build_tx_frame(dev, skb, false); | |
2053 | if (rc) | |
2054 | goto error; | |
2055 | ||
2056 | out_frame = (struct pn533_frame *) skb->data; | |
2057 | ||
2058 | rc = pn533_send_cmd_frame_async(dev, out_frame, dev->in_frame, | |
2059 | dev->in_maxlen, pn533_tm_send_complete, | |
2060 | NULL, GFP_KERNEL); | |
2061 | if (rc) { | |
2062 | nfc_dev_err(&dev->interface->dev, | |
2063 | "Error %d when trying to send data", rc); | |
2064 | goto error; | |
2065 | } | |
2066 | ||
2067 | return 0; | |
2068 | ||
2069 | error: | |
2070 | kfree_skb(skb); | |
2071 | ||
2072 | return rc; | |
2073 | } | |
2074 | ||
6ff73fd2 SO |
2075 | static void pn533_wq_mi_recv(struct work_struct *work) |
2076 | { | |
2077 | struct pn533 *dev = container_of(work, struct pn533, mi_work); | |
2078 | struct sk_buff *skb_cmd; | |
2079 | struct pn533_data_exchange_arg *arg = dev->cmd_complete_arg; | |
2080 | struct pn533_frame *out_frame, *in_frame; | |
2081 | struct sk_buff *skb_resp; | |
2082 | int skb_resp_len; | |
2083 | int rc; | |
2084 | ||
2085 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2086 | ||
2087 | /* This is a zero payload size skb */ | |
2088 | skb_cmd = alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN + PN533_FRAME_TAIL_SIZE, | |
2089 | GFP_KERNEL); | |
2090 | if (skb_cmd == NULL) | |
2091 | goto error_cmd; | |
2092 | ||
2093 | skb_reserve(skb_cmd, PN533_CMD_DATAEXCH_HEAD_LEN); | |
2094 | ||
dadb06f2 | 2095 | rc = pn533_build_tx_frame(dev, skb_cmd, true); |
6ff73fd2 SO |
2096 | if (rc) |
2097 | goto error_frame; | |
2098 | ||
2099 | skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN + | |
2100 | PN533_CMD_DATAEXCH_DATA_MAXLEN + | |
2101 | PN533_FRAME_TAIL_SIZE; | |
2102 | skb_resp = alloc_skb(skb_resp_len, GFP_KERNEL); | |
2103 | if (!skb_resp) { | |
2104 | rc = -ENOMEM; | |
2105 | goto error_frame; | |
2106 | } | |
2107 | ||
2108 | in_frame = (struct pn533_frame *) skb_resp->data; | |
2109 | out_frame = (struct pn533_frame *) skb_cmd->data; | |
2110 | ||
2111 | arg->skb_resp = skb_resp; | |
2112 | arg->skb_out = skb_cmd; | |
2113 | ||
2114 | rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame, | |
2115 | skb_resp_len, | |
2116 | pn533_data_exchange_complete, | |
2117 | dev->cmd_complete_arg, GFP_KERNEL); | |
2118 | if (!rc) | |
2119 | return; | |
2120 | ||
2121 | nfc_dev_err(&dev->interface->dev, "Error %d when trying to" | |
2122 | " perform data_exchange", rc); | |
2123 | ||
2124 | kfree_skb(skb_resp); | |
2125 | ||
2126 | error_frame: | |
2127 | kfree_skb(skb_cmd); | |
2128 | ||
2129 | error_cmd: | |
2130 | pn533_send_ack(dev, GFP_KERNEL); | |
2131 | ||
2132 | kfree(arg); | |
2133 | ||
0201ed03 | 2134 | mutex_unlock(&dev->cmd_lock); |
6ff73fd2 SO |
2135 | } |
2136 | ||
c46ee386 AAJ |
2137 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2138 | u8 cfgdata_len) | |
2139 | { | |
2140 | int rc; | |
2141 | u8 *params; | |
2142 | ||
2143 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2144 | ||
2145 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_RF_CONFIGURATION); | |
2146 | ||
2147 | params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame); | |
2148 | params[0] = cfgitem; | |
2149 | memcpy(¶ms[1], cfgdata, cfgdata_len); | |
2150 | dev->out_frame->datalen += (1 + cfgdata_len); | |
2151 | ||
2152 | pn533_tx_frame_finish(dev->out_frame); | |
2153 | ||
2154 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
2155 | dev->in_maxlen); | |
2156 | ||
2157 | return rc; | |
2158 | } | |
2159 | ||
5c7b0531 SO |
2160 | static int pn533_fw_reset(struct pn533 *dev) |
2161 | { | |
2162 | int rc; | |
2163 | u8 *params; | |
2164 | ||
2165 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2166 | ||
2167 | pn533_tx_frame_init(dev->out_frame, 0x18); | |
2168 | ||
2169 | params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame); | |
2170 | params[0] = 0x1; | |
2171 | dev->out_frame->datalen += 1; | |
2172 | ||
2173 | pn533_tx_frame_finish(dev->out_frame); | |
2174 | ||
2175 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
2176 | dev->in_maxlen); | |
2177 | ||
2178 | return rc; | |
2179 | } | |
2180 | ||
2181 | static struct nfc_ops pn533_nfc_ops = { | |
8b3fe7b5 IE |
2182 | .dev_up = NULL, |
2183 | .dev_down = NULL, | |
361f3cb7 SO |
2184 | .dep_link_up = pn533_dep_link_up, |
2185 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2186 | .start_poll = pn533_start_poll, |
2187 | .stop_poll = pn533_stop_poll, | |
2188 | .activate_target = pn533_activate_target, | |
2189 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2190 | .im_transceive = pn533_transceive, |
dadb06f2 | 2191 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2192 | }; |
2193 | ||
5c7b0531 SO |
2194 | static int pn533_setup(struct pn533 *dev) |
2195 | { | |
2196 | struct pn533_config_max_retries max_retries; | |
2197 | struct pn533_config_timing timing; | |
2198 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2199 | int rc; | |
2200 | ||
2201 | switch (dev->device_type) { | |
2202 | case PN533_DEVICE_STD: | |
2203 | max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS; | |
2204 | max_retries.mx_rty_psl = 2; | |
2205 | max_retries.mx_rty_passive_act = | |
2206 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2207 | ||
2208 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2209 | timing.atr_res_timeout = PN533_CONFIG_TIMING_204; | |
2210 | timing.dep_timeout = PN533_CONFIG_TIMING_409; | |
2211 | ||
2212 | break; | |
2213 | ||
2214 | case PN533_DEVICE_PASORI: | |
2215 | max_retries.mx_rty_atr = 0x2; | |
2216 | max_retries.mx_rty_psl = 0x1; | |
2217 | max_retries.mx_rty_passive_act = | |
2218 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2219 | ||
2220 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2221 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2222 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2223 | ||
2224 | break; | |
2225 | ||
2226 | default: | |
2227 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2228 | dev->device_type); | |
2229 | return -EINVAL; | |
2230 | } | |
2231 | ||
2232 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2233 | (u8 *)&max_retries, sizeof(max_retries)); | |
2234 | if (rc) { | |
2235 | nfc_dev_err(&dev->interface->dev, | |
2236 | "Error on setting MAX_RETRIES config"); | |
2237 | return rc; | |
2238 | } | |
2239 | ||
2240 | ||
2241 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2242 | (u8 *)&timing, sizeof(timing)); | |
2243 | if (rc) { | |
2244 | nfc_dev_err(&dev->interface->dev, | |
2245 | "Error on setting RF timings"); | |
2246 | return rc; | |
2247 | } | |
2248 | ||
2249 | switch (dev->device_type) { | |
2250 | case PN533_DEVICE_STD: | |
2251 | break; | |
2252 | ||
2253 | case PN533_DEVICE_PASORI: | |
2254 | pn533_fw_reset(dev); | |
2255 | ||
2256 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2257 | pasori_cfg, 3); | |
2258 | if (rc) { | |
2259 | nfc_dev_err(&dev->interface->dev, | |
2260 | "Error while settings PASORI config"); | |
2261 | return rc; | |
2262 | } | |
2263 | ||
2264 | pn533_fw_reset(dev); | |
2265 | ||
2266 | break; | |
2267 | } | |
2268 | ||
2269 | return 0; | |
2270 | } | |
2271 | ||
c46ee386 AAJ |
2272 | static int pn533_probe(struct usb_interface *interface, |
2273 | const struct usb_device_id *id) | |
2274 | { | |
2275 | struct pn533_fw_version *fw_ver; | |
2276 | struct pn533 *dev; | |
2277 | struct usb_host_interface *iface_desc; | |
2278 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2279 | int in_endpoint = 0; |
2280 | int out_endpoint = 0; | |
2281 | int rc = -ENOMEM; | |
2282 | int i; | |
2283 | u32 protocols; | |
2284 | ||
2285 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2286 | if (!dev) | |
2287 | return -ENOMEM; | |
2288 | ||
2289 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2290 | dev->interface = interface; | |
0201ed03 | 2291 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2292 | |
2293 | iface_desc = interface->cur_altsetting; | |
2294 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2295 | endpoint = &iface_desc->endpoint[i].desc; | |
2296 | ||
2297 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) { | |
2298 | dev->in_maxlen = le16_to_cpu(endpoint->wMaxPacketSize); | |
2299 | in_endpoint = endpoint->bEndpointAddress; | |
2300 | } | |
2301 | ||
2302 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) { | |
2303 | dev->out_maxlen = | |
2304 | le16_to_cpu(endpoint->wMaxPacketSize); | |
2305 | out_endpoint = endpoint->bEndpointAddress; | |
2306 | } | |
2307 | } | |
2308 | ||
2309 | if (!in_endpoint || !out_endpoint) { | |
2310 | nfc_dev_err(&interface->dev, "Could not find bulk-in or" | |
2311 | " bulk-out endpoint"); | |
2312 | rc = -ENODEV; | |
2313 | goto error; | |
2314 | } | |
2315 | ||
2316 | dev->in_frame = kmalloc(dev->in_maxlen, GFP_KERNEL); | |
2317 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2318 | dev->out_frame = kmalloc(dev->out_maxlen, GFP_KERNEL); | |
2319 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); | |
2320 | ||
2321 | if (!dev->in_frame || !dev->out_frame || | |
2322 | !dev->in_urb || !dev->out_urb) | |
2323 | goto error; | |
2324 | ||
2325 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
2326 | usb_rcvbulkpipe(dev->udev, in_endpoint), | |
2327 | NULL, 0, NULL, dev); | |
2328 | usb_fill_bulk_urb(dev->out_urb, dev->udev, | |
2329 | usb_sndbulkpipe(dev->udev, out_endpoint), | |
2330 | NULL, 0, | |
2331 | pn533_send_complete, dev); | |
2332 | ||
4849f85e | 2333 | INIT_WORK(&dev->cmd_work, pn533_wq_cmd_complete); |
6ff73fd2 | 2334 | INIT_WORK(&dev->mi_work, pn533_wq_mi_recv); |
103b34cf | 2335 | INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); |
6fbbdc16 | 2336 | INIT_WORK(&dev->poll_work, pn533_wq_poll); |
6ff73fd2 SO |
2337 | dev->wq = alloc_workqueue("pn533", |
2338 | WQ_NON_REENTRANT | WQ_UNBOUND | WQ_MEM_RECLAIM, | |
2339 | 1); | |
4849f85e SO |
2340 | if (dev->wq == NULL) |
2341 | goto error; | |
c46ee386 | 2342 | |
6fbbdc16 SO |
2343 | init_timer(&dev->listen_timer); |
2344 | dev->listen_timer.data = (unsigned long) dev; | |
2345 | dev->listen_timer.function = pn533_listen_mode_timer; | |
2346 | ||
6ff73fd2 SO |
2347 | skb_queue_head_init(&dev->resp_q); |
2348 | ||
c46ee386 AAJ |
2349 | usb_set_intfdata(interface, dev); |
2350 | ||
2351 | pn533_tx_frame_init(dev->out_frame, PN533_CMD_GET_FIRMWARE_VERSION); | |
2352 | pn533_tx_frame_finish(dev->out_frame); | |
2353 | ||
2354 | rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame, | |
2355 | dev->in_maxlen); | |
2356 | if (rc) | |
4849f85e | 2357 | goto destroy_wq; |
c46ee386 AAJ |
2358 | |
2359 | fw_ver = (struct pn533_fw_version *) | |
2360 | PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame); | |
2361 | nfc_dev_info(&dev->interface->dev, "NXP PN533 firmware ver %d.%d now" | |
2362 | " attached", fw_ver->ver, fw_ver->rev); | |
2363 | ||
5c7b0531 SO |
2364 | dev->device_type = id->driver_info; |
2365 | switch (dev->device_type) { | |
2366 | case PN533_DEVICE_STD: | |
2367 | protocols = PN533_ALL_PROTOCOLS; | |
2368 | break; | |
2369 | ||
2370 | case PN533_DEVICE_PASORI: | |
2371 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2372 | break; | |
2373 | ||
2374 | default: | |
2375 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2376 | dev->device_type); | |
2377 | rc = -EINVAL; | |
2378 | goto destroy_wq; | |
2379 | } | |
c46ee386 | 2380 | |
e8753043 SO |
2381 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
2382 | PN533_CMD_DATAEXCH_HEAD_LEN, | |
2383 | PN533_FRAME_TAIL_SIZE); | |
c46ee386 | 2384 | if (!dev->nfc_dev) |
4849f85e | 2385 | goto destroy_wq; |
c46ee386 AAJ |
2386 | |
2387 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2388 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2389 | ||
2390 | rc = nfc_register_device(dev->nfc_dev); | |
2391 | if (rc) | |
2392 | goto free_nfc_dev; | |
2393 | ||
5c7b0531 SO |
2394 | rc = pn533_setup(dev); |
2395 | if (rc) | |
34a85bfc | 2396 | goto unregister_nfc_dev; |
34a85bfc | 2397 | |
c46ee386 AAJ |
2398 | return 0; |
2399 | ||
9f2f8ba1 SO |
2400 | unregister_nfc_dev: |
2401 | nfc_unregister_device(dev->nfc_dev); | |
2402 | ||
c46ee386 AAJ |
2403 | free_nfc_dev: |
2404 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2405 | |
4849f85e SO |
2406 | destroy_wq: |
2407 | destroy_workqueue(dev->wq); | |
c46ee386 AAJ |
2408 | error: |
2409 | kfree(dev->in_frame); | |
2410 | usb_free_urb(dev->in_urb); | |
2411 | kfree(dev->out_frame); | |
2412 | usb_free_urb(dev->out_urb); | |
2413 | kfree(dev); | |
2414 | return rc; | |
2415 | } | |
2416 | ||
2417 | static void pn533_disconnect(struct usb_interface *interface) | |
2418 | { | |
2419 | struct pn533 *dev; | |
2420 | ||
2421 | dev = usb_get_intfdata(interface); | |
2422 | usb_set_intfdata(interface, NULL); | |
2423 | ||
2424 | nfc_unregister_device(dev->nfc_dev); | |
2425 | nfc_free_device(dev->nfc_dev); | |
2426 | ||
2427 | usb_kill_urb(dev->in_urb); | |
2428 | usb_kill_urb(dev->out_urb); | |
2429 | ||
4849f85e | 2430 | destroy_workqueue(dev->wq); |
c46ee386 | 2431 | |
6ff73fd2 SO |
2432 | skb_queue_purge(&dev->resp_q); |
2433 | ||
6fbbdc16 SO |
2434 | del_timer(&dev->listen_timer); |
2435 | ||
c46ee386 AAJ |
2436 | kfree(dev->in_frame); |
2437 | usb_free_urb(dev->in_urb); | |
2438 | kfree(dev->out_frame); | |
2439 | usb_free_urb(dev->out_urb); | |
2440 | kfree(dev); | |
2441 | ||
276556db | 2442 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2443 | } |
2444 | ||
2445 | static struct usb_driver pn533_driver = { | |
2446 | .name = "pn533", | |
2447 | .probe = pn533_probe, | |
2448 | .disconnect = pn533_disconnect, | |
2449 | .id_table = pn533_table, | |
2450 | }; | |
2451 | ||
fe748483 | 2452 | module_usb_driver(pn533_driver); |
c46ee386 AAJ |
2453 | |
2454 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>," | |
2455 | " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2456 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); | |
2457 | MODULE_VERSION(VERSION); | |
2458 | MODULE_LICENSE("GPL"); |