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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 | ||
5c7b0531 SO |
44 | #define PN533_DEVICE_STD 0x1 |
45 | #define PN533_DEVICE_PASORI 0x2 | |
46 | ||
01d719a2 SO |
47 | #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\ |
48 | NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\ | |
49 | NFC_PROTO_NFC_DEP_MASK |\ | |
50 | NFC_PROTO_ISO14443_B_MASK) | |
5c7b0531 SO |
51 | |
52 | #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \ | |
53 | NFC_PROTO_MIFARE_MASK | \ | |
54 | NFC_PROTO_FELICA_MASK | \ | |
01d719a2 | 55 | NFC_PROTO_ISO14443_MASK | \ |
5c7b0531 SO |
56 | NFC_PROTO_NFC_DEP_MASK) |
57 | ||
c46ee386 | 58 | static const struct usb_device_id pn533_table[] = { |
5c7b0531 SO |
59 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, |
60 | .idVendor = PN533_VENDOR_ID, | |
61 | .idProduct = PN533_PRODUCT_ID, | |
62 | .driver_info = PN533_DEVICE_STD, | |
63 | }, | |
64 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
65 | .idVendor = SCM_VENDOR_ID, | |
66 | .idProduct = SCL3711_PRODUCT_ID, | |
67 | .driver_info = PN533_DEVICE_STD, | |
68 | }, | |
69 | { .match_flags = USB_DEVICE_ID_MATCH_DEVICE, | |
70 | .idVendor = SONY_VENDOR_ID, | |
71 | .idProduct = PASORI_PRODUCT_ID, | |
72 | .driver_info = PN533_DEVICE_PASORI, | |
73 | }, | |
c46ee386 AAJ |
74 | { } |
75 | }; | |
76 | MODULE_DEVICE_TABLE(usb, pn533_table); | |
77 | ||
6fbbdc16 SO |
78 | /* How much time we spend listening for initiators */ |
79 | #define PN533_LISTEN_TIME 2 | |
80 | ||
c46ee386 | 81 | /* frame definitions */ |
82dec34d WR |
82 | #define PN533_NORMAL_FRAME_MAX_LEN 262 /* 6 (PREAMBLE, SOF, LEN, LCS, TFI) |
83 | 254 (DATA) | |
84 | 2 (DCS, postamble) */ | |
b1bb290a WR |
85 | #define PN533_FRAME_HEADER_LEN (sizeof(struct pn533_frame) \ |
86 | + 2) /* data[0] TFI, data[1] CC */ | |
87 | #define PN533_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/ | |
82dec34d | 88 | |
15461aeb WR |
89 | /* |
90 | * Max extended frame payload len, excluding TFI and CC | |
91 | * which are already in PN533_FRAME_HEADER_LEN. | |
92 | */ | |
93 | #define PN533_FRAME_MAX_PAYLOAD_LEN 263 | |
94 | ||
c46ee386 | 95 | #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \ |
b1bb290a | 96 | PN533_FRAME_TAIL_LEN) |
c46ee386 AAJ |
97 | #define PN533_FRAME_ACK_SIZE (sizeof(struct pn533_frame) + 1) |
98 | #define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen]) | |
99 | #define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1]) | |
100 | ||
101 | /* start of frame */ | |
102 | #define PN533_SOF 0x00FF | |
103 | ||
104 | /* frame identifier: in/out/error */ | |
105 | #define PN533_FRAME_IDENTIFIER(f) (f->data[0]) | |
106 | #define PN533_DIR_OUT 0xD4 | |
107 | #define PN533_DIR_IN 0xD5 | |
108 | ||
109 | /* PN533 Commands */ | |
110 | #define PN533_FRAME_CMD(f) (f->data[1]) | |
111 | #define PN533_FRAME_CMD_PARAMS_PTR(f) (&f->data[2]) | |
112 | #define PN533_FRAME_CMD_PARAMS_LEN(f) (f->datalen - 2) | |
113 | ||
114 | #define PN533_CMD_GET_FIRMWARE_VERSION 0x02 | |
115 | #define PN533_CMD_RF_CONFIGURATION 0x32 | |
116 | #define PN533_CMD_IN_DATA_EXCHANGE 0x40 | |
5c7b0531 | 117 | #define PN533_CMD_IN_COMM_THRU 0x42 |
c46ee386 AAJ |
118 | #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A |
119 | #define PN533_CMD_IN_ATR 0x50 | |
120 | #define PN533_CMD_IN_RELEASE 0x52 | |
361f3cb7 | 121 | #define PN533_CMD_IN_JUMP_FOR_DEP 0x56 |
c46ee386 | 122 | |
ad3823ce | 123 | #define PN533_CMD_TG_INIT_AS_TARGET 0x8c |
103b34cf | 124 | #define PN533_CMD_TG_GET_DATA 0x86 |
dadb06f2 | 125 | #define PN533_CMD_TG_SET_DATA 0x8e |
aada17ac | 126 | #define PN533_CMD_UNDEF 0xff |
ad3823ce | 127 | |
c46ee386 AAJ |
128 | #define PN533_CMD_RESPONSE(cmd) (cmd + 1) |
129 | ||
130 | /* PN533 Return codes */ | |
131 | #define PN533_CMD_RET_MASK 0x3F | |
132 | #define PN533_CMD_MI_MASK 0x40 | |
133 | #define PN533_CMD_RET_SUCCESS 0x00 | |
134 | ||
135 | struct pn533; | |
136 | ||
137 | typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, | |
138 | u8 *params, int params_len); | |
139 | ||
aada17ac WR |
140 | typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg, |
141 | struct sk_buff *resp); | |
142 | ||
c46ee386 AAJ |
143 | /* structs for pn533 commands */ |
144 | ||
145 | /* PN533_CMD_GET_FIRMWARE_VERSION */ | |
146 | struct pn533_fw_version { | |
147 | u8 ic; | |
148 | u8 ver; | |
149 | u8 rev; | |
150 | u8 support; | |
151 | }; | |
152 | ||
153 | /* PN533_CMD_RF_CONFIGURATION */ | |
34a85bfc | 154 | #define PN533_CFGITEM_TIMING 0x02 |
c46ee386 | 155 | #define PN533_CFGITEM_MAX_RETRIES 0x05 |
5c7b0531 | 156 | #define PN533_CFGITEM_PASORI 0x82 |
c46ee386 | 157 | |
34a85bfc SO |
158 | #define PN533_CONFIG_TIMING_102 0xb |
159 | #define PN533_CONFIG_TIMING_204 0xc | |
160 | #define PN533_CONFIG_TIMING_409 0xd | |
161 | #define PN533_CONFIG_TIMING_819 0xe | |
162 | ||
c46ee386 AAJ |
163 | #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00 |
164 | #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF | |
165 | ||
166 | struct pn533_config_max_retries { | |
167 | u8 mx_rty_atr; | |
168 | u8 mx_rty_psl; | |
169 | u8 mx_rty_passive_act; | |
170 | } __packed; | |
171 | ||
34a85bfc SO |
172 | struct pn533_config_timing { |
173 | u8 rfu; | |
174 | u8 atr_res_timeout; | |
175 | u8 dep_timeout; | |
176 | } __packed; | |
177 | ||
c46ee386 AAJ |
178 | /* PN533_CMD_IN_LIST_PASSIVE_TARGET */ |
179 | ||
180 | /* felica commands opcode */ | |
181 | #define PN533_FELICA_OPC_SENSF_REQ 0 | |
182 | #define PN533_FELICA_OPC_SENSF_RES 1 | |
183 | /* felica SENSF_REQ parameters */ | |
184 | #define PN533_FELICA_SENSF_SC_ALL 0xFFFF | |
185 | #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0 | |
186 | #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1 | |
187 | #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2 | |
188 | ||
189 | /* type B initiator_data values */ | |
190 | #define PN533_TYPE_B_AFI_ALL_FAMILIES 0 | |
191 | #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0 | |
192 | #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1 | |
193 | ||
194 | union pn533_cmd_poll_initdata { | |
195 | struct { | |
196 | u8 afi; | |
197 | u8 polling_method; | |
198 | } __packed type_b; | |
199 | struct { | |
200 | u8 opcode; | |
201 | __be16 sc; | |
202 | u8 rc; | |
203 | u8 tsn; | |
204 | } __packed felica; | |
205 | }; | |
206 | ||
207 | /* Poll modulations */ | |
208 | enum { | |
209 | PN533_POLL_MOD_106KBPS_A, | |
210 | PN533_POLL_MOD_212KBPS_FELICA, | |
211 | PN533_POLL_MOD_424KBPS_FELICA, | |
212 | PN533_POLL_MOD_106KBPS_JEWEL, | |
213 | PN533_POLL_MOD_847KBPS_B, | |
6fbbdc16 | 214 | PN533_LISTEN_MOD, |
c46ee386 AAJ |
215 | |
216 | __PN533_POLL_MOD_AFTER_LAST, | |
217 | }; | |
218 | #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1) | |
219 | ||
220 | struct pn533_poll_modulations { | |
221 | struct { | |
222 | u8 maxtg; | |
223 | u8 brty; | |
224 | union pn533_cmd_poll_initdata initiator_data; | |
225 | } __packed data; | |
226 | u8 len; | |
227 | }; | |
228 | ||
229 | const struct pn533_poll_modulations poll_mod[] = { | |
230 | [PN533_POLL_MOD_106KBPS_A] = { | |
231 | .data = { | |
232 | .maxtg = 1, | |
233 | .brty = 0, | |
234 | }, | |
235 | .len = 2, | |
236 | }, | |
237 | [PN533_POLL_MOD_212KBPS_FELICA] = { | |
238 | .data = { | |
239 | .maxtg = 1, | |
240 | .brty = 1, | |
241 | .initiator_data.felica = { | |
242 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
243 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
244 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
245 | .tsn = 0, | |
246 | }, | |
247 | }, | |
248 | .len = 7, | |
249 | }, | |
250 | [PN533_POLL_MOD_424KBPS_FELICA] = { | |
251 | .data = { | |
252 | .maxtg = 1, | |
253 | .brty = 2, | |
254 | .initiator_data.felica = { | |
255 | .opcode = PN533_FELICA_OPC_SENSF_REQ, | |
256 | .sc = PN533_FELICA_SENSF_SC_ALL, | |
257 | .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE, | |
258 | .tsn = 0, | |
259 | }, | |
260 | }, | |
261 | .len = 7, | |
262 | }, | |
263 | [PN533_POLL_MOD_106KBPS_JEWEL] = { | |
264 | .data = { | |
265 | .maxtg = 1, | |
266 | .brty = 4, | |
267 | }, | |
268 | .len = 2, | |
269 | }, | |
270 | [PN533_POLL_MOD_847KBPS_B] = { | |
271 | .data = { | |
272 | .maxtg = 1, | |
273 | .brty = 8, | |
274 | .initiator_data.type_b = { | |
275 | .afi = PN533_TYPE_B_AFI_ALL_FAMILIES, | |
276 | .polling_method = | |
277 | PN533_TYPE_B_POLL_METHOD_TIMESLOT, | |
278 | }, | |
279 | }, | |
280 | .len = 3, | |
281 | }, | |
6fbbdc16 SO |
282 | [PN533_LISTEN_MOD] = { |
283 | .len = 0, | |
284 | }, | |
c46ee386 AAJ |
285 | }; |
286 | ||
287 | /* PN533_CMD_IN_ATR */ | |
288 | ||
c46ee386 AAJ |
289 | struct pn533_cmd_activate_response { |
290 | u8 status; | |
291 | u8 nfcid3t[10]; | |
292 | u8 didt; | |
293 | u8 bst; | |
294 | u8 brt; | |
295 | u8 to; | |
296 | u8 ppt; | |
297 | /* optional */ | |
298 | u8 gt[]; | |
299 | } __packed; | |
300 | ||
361f3cb7 SO |
301 | struct pn533_cmd_jump_dep_response { |
302 | u8 status; | |
303 | u8 tg; | |
304 | u8 nfcid3t[10]; | |
305 | u8 didt; | |
306 | u8 bst; | |
307 | u8 brt; | |
308 | u8 to; | |
309 | u8 ppt; | |
310 | /* optional */ | |
311 | u8 gt[]; | |
312 | } __packed; | |
c46ee386 | 313 | |
ad3823ce SO |
314 | |
315 | /* PN533_TG_INIT_AS_TARGET */ | |
316 | #define PN533_INIT_TARGET_PASSIVE 0x1 | |
317 | #define PN533_INIT_TARGET_DEP 0x2 | |
318 | ||
fc40a8c1 SO |
319 | #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3 |
320 | #define PN533_INIT_TARGET_RESP_ACTIVE 0x1 | |
321 | #define PN533_INIT_TARGET_RESP_DEP 0x4 | |
322 | ||
c46ee386 AAJ |
323 | struct pn533 { |
324 | struct usb_device *udev; | |
325 | struct usb_interface *interface; | |
326 | struct nfc_dev *nfc_dev; | |
327 | ||
328 | struct urb *out_urb; | |
c46ee386 AAJ |
329 | struct pn533_frame *out_frame; |
330 | ||
331 | struct urb *in_urb; | |
c46ee386 AAJ |
332 | struct pn533_frame *in_frame; |
333 | ||
6ff73fd2 SO |
334 | struct sk_buff_head resp_q; |
335 | ||
4849f85e SO |
336 | struct workqueue_struct *wq; |
337 | struct work_struct cmd_work; | |
5d50b364 | 338 | struct work_struct cmd_complete_work; |
6fbbdc16 | 339 | struct work_struct poll_work; |
6ff73fd2 | 340 | struct work_struct mi_work; |
103b34cf | 341 | struct work_struct tg_work; |
6fbbdc16 | 342 | struct timer_list listen_timer; |
4849f85e SO |
343 | struct pn533_frame *wq_in_frame; |
344 | int wq_in_error; | |
6fbbdc16 | 345 | int cancel_listen; |
c46ee386 AAJ |
346 | |
347 | pn533_cmd_complete_t cmd_complete; | |
348 | void *cmd_complete_arg; | |
b1e666f5 | 349 | void *cmd_complete_mi_arg; |
0201ed03 | 350 | struct mutex cmd_lock; |
c46ee386 AAJ |
351 | u8 cmd; |
352 | ||
353 | struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1]; | |
354 | u8 poll_mod_count; | |
355 | u8 poll_mod_curr; | |
356 | u32 poll_protocols; | |
6fbbdc16 SO |
357 | u32 listen_protocols; |
358 | ||
359 | u8 *gb; | |
360 | size_t gb_len; | |
c46ee386 AAJ |
361 | |
362 | u8 tgt_available_prots; | |
363 | u8 tgt_active_prot; | |
51ad304c | 364 | u8 tgt_mode; |
5c7b0531 SO |
365 | |
366 | u32 device_type; | |
5d50b364 SO |
367 | |
368 | struct list_head cmd_queue; | |
369 | u8 cmd_pending; | |
370 | }; | |
371 | ||
372 | struct pn533_cmd { | |
373 | struct list_head queue; | |
374 | struct pn533_frame *out_frame; | |
375 | struct pn533_frame *in_frame; | |
376 | int in_frame_len; | |
aada17ac WR |
377 | u8 cmd_code; |
378 | struct sk_buff *req; | |
379 | struct sk_buff *resp; | |
5d50b364 SO |
380 | pn533_cmd_complete_t cmd_complete; |
381 | void *arg; | |
c46ee386 AAJ |
382 | }; |
383 | ||
384 | struct pn533_frame { | |
385 | u8 preamble; | |
386 | __be16 start_frame; | |
387 | u8 datalen; | |
388 | u8 datalen_checksum; | |
389 | u8 data[]; | |
390 | } __packed; | |
391 | ||
392 | /* The rule: value + checksum = 0 */ | |
393 | static inline u8 pn533_checksum(u8 value) | |
394 | { | |
395 | return ~value + 1; | |
396 | } | |
397 | ||
398 | /* The rule: sum(data elements) + checksum = 0 */ | |
399 | static u8 pn533_data_checksum(u8 *data, int datalen) | |
400 | { | |
401 | u8 sum = 0; | |
402 | int i; | |
403 | ||
404 | for (i = 0; i < datalen; i++) | |
405 | sum += data[i]; | |
406 | ||
407 | return pn533_checksum(sum); | |
408 | } | |
409 | ||
410 | /** | |
411 | * pn533_tx_frame_ack - create a ack frame | |
412 | * @frame: The frame to be set as ack | |
413 | * | |
414 | * Ack is different type of standard frame. As a standard frame, it has | |
415 | * preamble and start_frame. However the checksum of this frame must fail, | |
416 | * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test | |
417 | * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack. | |
418 | * After datalen_checksum field, the postamble is placed. | |
419 | */ | |
420 | static void pn533_tx_frame_ack(struct pn533_frame *frame) | |
421 | { | |
422 | frame->preamble = 0; | |
423 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
424 | frame->datalen = 0; | |
425 | frame->datalen_checksum = 0xFF; | |
426 | /* data[0] is used as postamble */ | |
427 | frame->data[0] = 0; | |
428 | } | |
429 | ||
430 | static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd) | |
431 | { | |
432 | frame->preamble = 0; | |
433 | frame->start_frame = cpu_to_be16(PN533_SOF); | |
434 | PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT; | |
435 | PN533_FRAME_CMD(frame) = cmd; | |
436 | frame->datalen = 2; | |
437 | } | |
438 | ||
439 | static void pn533_tx_frame_finish(struct pn533_frame *frame) | |
440 | { | |
441 | frame->datalen_checksum = pn533_checksum(frame->datalen); | |
442 | ||
443 | PN533_FRAME_CHECKSUM(frame) = | |
444 | pn533_data_checksum(frame->data, frame->datalen); | |
445 | ||
446 | PN533_FRAME_POSTAMBLE(frame) = 0; | |
447 | } | |
448 | ||
449 | static bool pn533_rx_frame_is_valid(struct pn533_frame *frame) | |
450 | { | |
451 | u8 checksum; | |
452 | ||
453 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
454 | return false; | |
455 | ||
456 | checksum = pn533_checksum(frame->datalen); | |
457 | if (checksum != frame->datalen_checksum) | |
458 | return false; | |
459 | ||
460 | checksum = pn533_data_checksum(frame->data, frame->datalen); | |
461 | if (checksum != PN533_FRAME_CHECKSUM(frame)) | |
462 | return false; | |
463 | ||
464 | return true; | |
465 | } | |
466 | ||
467 | static bool pn533_rx_frame_is_ack(struct pn533_frame *frame) | |
468 | { | |
469 | if (frame->start_frame != cpu_to_be16(PN533_SOF)) | |
470 | return false; | |
471 | ||
472 | if (frame->datalen != 0 || frame->datalen_checksum != 0xFF) | |
473 | return false; | |
474 | ||
475 | return true; | |
476 | } | |
477 | ||
478 | static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd) | |
479 | { | |
480 | return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd)); | |
481 | } | |
482 | ||
4849f85e SO |
483 | |
484 | static void pn533_wq_cmd_complete(struct work_struct *work) | |
c46ee386 | 485 | { |
5d50b364 | 486 | struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work); |
4849f85e | 487 | struct pn533_frame *in_frame; |
c46ee386 AAJ |
488 | int rc; |
489 | ||
4849f85e SO |
490 | in_frame = dev->wq_in_frame; |
491 | ||
492 | if (dev->wq_in_error) | |
c46ee386 | 493 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, NULL, |
4849f85e | 494 | dev->wq_in_error); |
c46ee386 AAJ |
495 | else |
496 | rc = dev->cmd_complete(dev, dev->cmd_complete_arg, | |
497 | PN533_FRAME_CMD_PARAMS_PTR(in_frame), | |
498 | PN533_FRAME_CMD_PARAMS_LEN(in_frame)); | |
499 | ||
500 | if (rc != -EINPROGRESS) | |
5d50b364 | 501 | queue_work(dev->wq, &dev->cmd_work); |
c46ee386 AAJ |
502 | } |
503 | ||
504 | static void pn533_recv_response(struct urb *urb) | |
505 | { | |
506 | struct pn533 *dev = urb->context; | |
507 | struct pn533_frame *in_frame; | |
508 | ||
4849f85e | 509 | dev->wq_in_frame = NULL; |
c46ee386 AAJ |
510 | |
511 | switch (urb->status) { | |
512 | case 0: | |
513 | /* success */ | |
514 | break; | |
515 | case -ECONNRESET: | |
516 | case -ENOENT: | |
517 | case -ESHUTDOWN: | |
6ca55372 WR |
518 | nfc_dev_dbg(&dev->interface->dev, |
519 | "Urb shutting down with status: %d", urb->status); | |
4849f85e SO |
520 | dev->wq_in_error = urb->status; |
521 | goto sched_wq; | |
c46ee386 | 522 | default: |
6ca55372 WR |
523 | nfc_dev_err(&dev->interface->dev, |
524 | "Nonzero urb status received: %d", urb->status); | |
4849f85e SO |
525 | dev->wq_in_error = urb->status; |
526 | goto sched_wq; | |
c46ee386 AAJ |
527 | } |
528 | ||
529 | in_frame = dev->in_urb->transfer_buffer; | |
530 | ||
99e591be WR |
531 | print_hex_dump(KERN_DEBUG, "PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, |
532 | in_frame, PN533_FRAME_SIZE(in_frame), false); | |
533 | ||
c46ee386 AAJ |
534 | if (!pn533_rx_frame_is_valid(in_frame)) { |
535 | nfc_dev_err(&dev->interface->dev, "Received an invalid frame"); | |
4849f85e SO |
536 | dev->wq_in_error = -EIO; |
537 | goto sched_wq; | |
c46ee386 AAJ |
538 | } |
539 | ||
540 | if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) { | |
6ca55372 WR |
541 | nfc_dev_err(&dev->interface->dev, |
542 | "It it not the response to the last command"); | |
4849f85e SO |
543 | dev->wq_in_error = -EIO; |
544 | goto sched_wq; | |
c46ee386 AAJ |
545 | } |
546 | ||
547 | nfc_dev_dbg(&dev->interface->dev, "Received a valid frame"); | |
4849f85e SO |
548 | dev->wq_in_error = 0; |
549 | dev->wq_in_frame = in_frame; | |
c46ee386 | 550 | |
4849f85e | 551 | sched_wq: |
5d50b364 | 552 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
553 | } |
554 | ||
555 | static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags) | |
556 | { | |
557 | dev->in_urb->complete = pn533_recv_response; | |
558 | ||
559 | return usb_submit_urb(dev->in_urb, flags); | |
560 | } | |
561 | ||
562 | static void pn533_recv_ack(struct urb *urb) | |
563 | { | |
564 | struct pn533 *dev = urb->context; | |
565 | struct pn533_frame *in_frame; | |
566 | int rc; | |
567 | ||
568 | switch (urb->status) { | |
569 | case 0: | |
570 | /* success */ | |
571 | break; | |
572 | case -ECONNRESET: | |
573 | case -ENOENT: | |
574 | case -ESHUTDOWN: | |
6ca55372 WR |
575 | nfc_dev_dbg(&dev->interface->dev, |
576 | "Urb shutting down with status: %d", urb->status); | |
4849f85e SO |
577 | dev->wq_in_error = urb->status; |
578 | goto sched_wq; | |
c46ee386 | 579 | default: |
6ca55372 WR |
580 | nfc_dev_err(&dev->interface->dev, |
581 | "Nonzero urb status received: %d", urb->status); | |
4849f85e SO |
582 | dev->wq_in_error = urb->status; |
583 | goto sched_wq; | |
c46ee386 AAJ |
584 | } |
585 | ||
586 | in_frame = dev->in_urb->transfer_buffer; | |
587 | ||
588 | if (!pn533_rx_frame_is_ack(in_frame)) { | |
589 | nfc_dev_err(&dev->interface->dev, "Received an invalid ack"); | |
4849f85e SO |
590 | dev->wq_in_error = -EIO; |
591 | goto sched_wq; | |
c46ee386 AAJ |
592 | } |
593 | ||
594 | nfc_dev_dbg(&dev->interface->dev, "Received a valid ack"); | |
595 | ||
596 | rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC); | |
597 | if (rc) { | |
6ca55372 WR |
598 | nfc_dev_err(&dev->interface->dev, |
599 | "usb_submit_urb failed with result %d", rc); | |
4849f85e SO |
600 | dev->wq_in_error = rc; |
601 | goto sched_wq; | |
c46ee386 AAJ |
602 | } |
603 | ||
604 | return; | |
605 | ||
4849f85e SO |
606 | sched_wq: |
607 | dev->wq_in_frame = NULL; | |
5d50b364 | 608 | queue_work(dev->wq, &dev->cmd_complete_work); |
c46ee386 AAJ |
609 | } |
610 | ||
611 | static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags) | |
612 | { | |
613 | dev->in_urb->complete = pn533_recv_ack; | |
614 | ||
615 | return usb_submit_urb(dev->in_urb, flags); | |
616 | } | |
617 | ||
618 | static int pn533_send_ack(struct pn533 *dev, gfp_t flags) | |
619 | { | |
620 | int rc; | |
621 | ||
622 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
623 | ||
624 | pn533_tx_frame_ack(dev->out_frame); | |
625 | ||
626 | dev->out_urb->transfer_buffer = dev->out_frame; | |
627 | dev->out_urb->transfer_buffer_length = PN533_FRAME_ACK_SIZE; | |
628 | rc = usb_submit_urb(dev->out_urb, flags); | |
629 | ||
630 | return rc; | |
631 | } | |
632 | ||
633 | static int __pn533_send_cmd_frame_async(struct pn533 *dev, | |
634 | struct pn533_frame *out_frame, | |
635 | struct pn533_frame *in_frame, | |
636 | int in_frame_len, | |
637 | pn533_cmd_complete_t cmd_complete, | |
d94ea4f5 | 638 | void *arg) |
c46ee386 AAJ |
639 | { |
640 | int rc; | |
641 | ||
642 | nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", | |
5d467742 | 643 | PN533_FRAME_CMD(out_frame)); |
c46ee386 AAJ |
644 | |
645 | dev->cmd = PN533_FRAME_CMD(out_frame); | |
646 | dev->cmd_complete = cmd_complete; | |
647 | dev->cmd_complete_arg = arg; | |
648 | ||
649 | dev->out_urb->transfer_buffer = out_frame; | |
650 | dev->out_urb->transfer_buffer_length = | |
651 | PN533_FRAME_SIZE(out_frame); | |
652 | ||
653 | dev->in_urb->transfer_buffer = in_frame; | |
654 | dev->in_urb->transfer_buffer_length = in_frame_len; | |
655 | ||
99e591be WR |
656 | print_hex_dump(KERN_DEBUG, "PN533 TX: ", DUMP_PREFIX_NONE, 16, 1, |
657 | out_frame, PN533_FRAME_SIZE(out_frame), false); | |
658 | ||
d94ea4f5 | 659 | rc = usb_submit_urb(dev->out_urb, GFP_KERNEL); |
c46ee386 AAJ |
660 | if (rc) |
661 | return rc; | |
662 | ||
d94ea4f5 | 663 | rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL); |
c46ee386 AAJ |
664 | if (rc) |
665 | goto error; | |
666 | ||
667 | return 0; | |
668 | ||
669 | error: | |
670 | usb_unlink_urb(dev->out_urb); | |
671 | return rc; | |
672 | } | |
673 | ||
aada17ac WR |
674 | static void pn533_build_cmd_frame(u8 cmd_code, struct sk_buff *skb) |
675 | { | |
676 | struct pn533_frame *frame; | |
677 | /* payload is already there, just update datalen */ | |
678 | int payload_len = skb->len; | |
679 | ||
680 | skb_push(skb, PN533_FRAME_HEADER_LEN); | |
681 | skb_put(skb, PN533_FRAME_TAIL_LEN); | |
682 | ||
683 | frame = (struct pn533_frame *)skb->data; | |
684 | ||
685 | pn533_tx_frame_init(frame, cmd_code); | |
686 | frame->datalen += payload_len; | |
687 | pn533_tx_frame_finish(frame); | |
688 | } | |
689 | ||
690 | struct pn533_send_async_complete_arg { | |
691 | pn533_send_async_complete_t complete_cb; | |
692 | void *complete_cb_context; | |
693 | struct sk_buff *resp; | |
694 | struct sk_buff *req; | |
695 | }; | |
696 | ||
697 | static int pn533_send_async_complete(struct pn533 *dev, void *_arg, u8 *params, | |
698 | int params_len) | |
699 | { | |
700 | struct pn533_send_async_complete_arg *arg = _arg; | |
701 | ||
702 | struct sk_buff *req = arg->req; | |
703 | struct sk_buff *resp = arg->resp; | |
704 | ||
705 | struct pn533_frame *frame = (struct pn533_frame *)resp->data; | |
706 | int rc; | |
707 | ||
708 | dev_kfree_skb(req); | |
709 | ||
710 | if (params_len < 0) { | |
711 | nfc_dev_err(&dev->interface->dev, | |
712 | "Error %d when starting as a target", | |
713 | params_len); | |
714 | ||
715 | arg->complete_cb(dev, arg->complete_cb_context, | |
716 | ERR_PTR(params_len)); | |
717 | rc = params_len; | |
718 | dev_kfree_skb(resp); | |
719 | goto out; | |
720 | } | |
721 | ||
722 | skb_put(resp, PN533_FRAME_SIZE(frame)); | |
723 | skb_pull(resp, PN533_FRAME_HEADER_LEN); | |
724 | skb_trim(resp, resp->len - PN533_FRAME_TAIL_LEN); | |
725 | ||
726 | rc = arg->complete_cb(dev, arg->complete_cb_context, resp); | |
727 | ||
728 | out: | |
729 | kfree(arg); | |
730 | return rc; | |
731 | } | |
732 | ||
733 | static int __pn533_send_async(struct pn533 *dev, u8 cmd_code, | |
734 | struct sk_buff *req, struct sk_buff *resp, | |
735 | int resp_len, | |
736 | pn533_send_async_complete_t complete_cb, | |
737 | void *complete_cb_context) | |
738 | { | |
739 | struct pn533_cmd *cmd; | |
740 | struct pn533_send_async_complete_arg *arg; | |
741 | int rc = 0; | |
742 | ||
743 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
744 | ||
745 | arg = kzalloc(sizeof(arg), GFP_KERNEL); | |
746 | if (!arg) | |
747 | return -ENOMEM; | |
748 | ||
749 | arg->complete_cb = complete_cb; | |
750 | arg->complete_cb_context = complete_cb_context; | |
751 | arg->resp = resp; | |
752 | arg->req = req; | |
753 | ||
754 | pn533_build_cmd_frame(cmd_code, req); | |
755 | ||
756 | mutex_lock(&dev->cmd_lock); | |
757 | ||
758 | if (!dev->cmd_pending) { | |
759 | rc = __pn533_send_cmd_frame_async(dev, | |
760 | (struct pn533_frame *)req->data, | |
761 | (struct pn533_frame *)resp->data, | |
762 | resp_len, pn533_send_async_complete, | |
763 | arg); | |
764 | if (rc) | |
765 | goto error; | |
766 | ||
767 | dev->cmd_pending = 1; | |
768 | goto unlock; | |
769 | } | |
770 | ||
771 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__); | |
772 | ||
773 | cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL); | |
774 | if (!cmd) { | |
775 | rc = -ENOMEM; | |
776 | goto error; | |
777 | } | |
778 | ||
779 | INIT_LIST_HEAD(&cmd->queue); | |
780 | cmd->cmd_code = cmd_code; | |
781 | cmd->req = req; | |
782 | cmd->resp = resp; | |
783 | cmd->arg = arg; | |
784 | ||
785 | list_add_tail(&cmd->queue, &dev->cmd_queue); | |
786 | ||
787 | goto unlock; | |
788 | ||
789 | error: | |
790 | kfree(arg); | |
791 | unlock: | |
792 | mutex_unlock(&dev->cmd_lock); | |
793 | return rc; | |
15461aeb WR |
794 | } |
795 | ||
796 | static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code, | |
797 | struct sk_buff *req, | |
798 | pn533_send_async_complete_t complete_cb, | |
799 | void *complete_cb_context) | |
800 | { | |
801 | struct sk_buff *resp; | |
802 | int rc; | |
803 | int resp_len = PN533_FRAME_HEADER_LEN + | |
804 | PN533_FRAME_MAX_PAYLOAD_LEN + | |
805 | PN533_FRAME_TAIL_LEN; | |
806 | ||
807 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
808 | ||
809 | resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL); | |
810 | if (!resp) | |
811 | return -ENOMEM; | |
812 | ||
813 | rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb, | |
814 | complete_cb_context); | |
815 | if (rc) | |
816 | dev_kfree_skb(resp); | |
817 | ||
818 | return rc; | |
aada17ac WR |
819 | } |
820 | ||
821 | static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code, | |
822 | struct sk_buff *req, | |
823 | pn533_send_async_complete_t complete_cb, | |
824 | void *complete_cb_context) | |
825 | { | |
826 | struct sk_buff *resp; | |
827 | int rc; | |
828 | ||
829 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
830 | ||
831 | resp = alloc_skb(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL); | |
832 | if (!resp) | |
833 | return -ENOMEM; | |
834 | ||
835 | rc = __pn533_send_async(dev, cmd_code, req, resp, | |
836 | PN533_NORMAL_FRAME_MAX_LEN, | |
837 | complete_cb, complete_cb_context); | |
838 | if (rc) | |
839 | dev_kfree_skb(resp); | |
840 | ||
841 | return rc; | |
842 | } | |
843 | ||
b1e666f5 WR |
844 | /* |
845 | * pn533_send_cmd_direct_async | |
846 | * | |
847 | * The function sends a piority cmd directly to the chip omiting the cmd | |
848 | * queue. It's intended to be used by chaining mechanism of received responses | |
849 | * where the host has to request every single chunk of data before scheduling | |
850 | * next cmd from the queue. | |
851 | */ | |
852 | static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code, | |
853 | struct sk_buff *req, | |
854 | pn533_send_async_complete_t complete_cb, | |
855 | void *complete_cb_context) | |
856 | { | |
857 | struct pn533_send_async_complete_arg *arg; | |
858 | struct sk_buff *resp; | |
859 | int rc; | |
860 | int resp_len = PN533_FRAME_HEADER_LEN + | |
861 | PN533_FRAME_MAX_PAYLOAD_LEN + | |
862 | PN533_FRAME_TAIL_LEN; | |
863 | ||
864 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
865 | ||
866 | resp = alloc_skb(resp_len, GFP_KERNEL); | |
867 | if (!resp) | |
868 | return -ENOMEM; | |
869 | ||
870 | arg = kzalloc(sizeof(arg), GFP_KERNEL); | |
871 | if (!arg) { | |
872 | dev_kfree_skb(resp); | |
873 | return -ENOMEM; | |
874 | } | |
875 | ||
876 | arg->complete_cb = complete_cb; | |
877 | arg->complete_cb_context = complete_cb_context; | |
878 | arg->resp = resp; | |
879 | arg->req = req; | |
880 | ||
881 | pn533_build_cmd_frame(cmd_code, req); | |
882 | ||
883 | rc = __pn533_send_cmd_frame_async(dev, (struct pn533_frame *)req->data, | |
884 | (struct pn533_frame *)resp->data, | |
885 | resp_len, pn533_send_async_complete, | |
886 | arg); | |
887 | if (rc < 0) { | |
888 | dev_kfree_skb(resp); | |
889 | kfree(arg); | |
890 | } | |
891 | ||
892 | return rc; | |
893 | } | |
894 | ||
5d50b364 SO |
895 | static void pn533_wq_cmd(struct work_struct *work) |
896 | { | |
897 | struct pn533 *dev = container_of(work, struct pn533, cmd_work); | |
898 | struct pn533_cmd *cmd; | |
899 | ||
900 | mutex_lock(&dev->cmd_lock); | |
901 | ||
902 | if (list_empty(&dev->cmd_queue)) { | |
903 | dev->cmd_pending = 0; | |
904 | mutex_unlock(&dev->cmd_lock); | |
905 | return; | |
906 | } | |
907 | ||
908 | cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue); | |
909 | ||
60ad07ab SJ |
910 | list_del(&cmd->queue); |
911 | ||
5d50b364 SO |
912 | mutex_unlock(&dev->cmd_lock); |
913 | ||
aada17ac WR |
914 | if (cmd->cmd_code != PN533_CMD_UNDEF) |
915 | __pn533_send_cmd_frame_async(dev, | |
916 | (struct pn533_frame *)cmd->req->data, | |
917 | (struct pn533_frame *)cmd->resp->data, | |
918 | PN533_NORMAL_FRAME_MAX_LEN, | |
919 | pn533_send_async_complete, | |
920 | cmd->arg); | |
921 | else | |
922 | __pn533_send_cmd_frame_async(dev, cmd->out_frame, cmd->in_frame, | |
923 | cmd->in_frame_len, | |
924 | cmd->cmd_complete, cmd->arg); | |
5d50b364 | 925 | |
5d50b364 SO |
926 | kfree(cmd); |
927 | } | |
928 | ||
c46ee386 AAJ |
929 | static int pn533_send_cmd_frame_async(struct pn533 *dev, |
930 | struct pn533_frame *out_frame, | |
931 | struct pn533_frame *in_frame, | |
932 | int in_frame_len, | |
933 | pn533_cmd_complete_t cmd_complete, | |
d94ea4f5 | 934 | void *arg) |
c46ee386 | 935 | { |
5d50b364 | 936 | struct pn533_cmd *cmd; |
ee5e8d81 | 937 | int rc = 0; |
c46ee386 AAJ |
938 | |
939 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
940 | ||
5d50b364 | 941 | mutex_lock(&dev->cmd_lock); |
c46ee386 | 942 | |
5d50b364 SO |
943 | if (!dev->cmd_pending) { |
944 | rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame, | |
945 | in_frame_len, cmd_complete, | |
d94ea4f5 | 946 | arg); |
5d50b364 SO |
947 | if (!rc) |
948 | dev->cmd_pending = 1; | |
949 | ||
ee5e8d81 | 950 | goto unlock; |
5d50b364 SO |
951 | } |
952 | ||
953 | nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__); | |
954 | ||
d94ea4f5 | 955 | cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL); |
ee5e8d81 SJ |
956 | if (!cmd) { |
957 | rc = -ENOMEM; | |
958 | goto unlock; | |
959 | } | |
5d50b364 SO |
960 | |
961 | INIT_LIST_HEAD(&cmd->queue); | |
962 | cmd->out_frame = out_frame; | |
963 | cmd->in_frame = in_frame; | |
964 | cmd->in_frame_len = in_frame_len; | |
aada17ac | 965 | cmd->cmd_code = PN533_CMD_UNDEF; |
5d50b364 SO |
966 | cmd->cmd_complete = cmd_complete; |
967 | cmd->arg = arg; | |
5d50b364 SO |
968 | |
969 | list_add_tail(&cmd->queue, &dev->cmd_queue); | |
c46ee386 | 970 | |
ee5e8d81 | 971 | unlock: |
0201ed03 | 972 | mutex_unlock(&dev->cmd_lock); |
5d50b364 | 973 | |
ee5e8d81 | 974 | return rc; |
c46ee386 AAJ |
975 | } |
976 | ||
977 | struct pn533_sync_cmd_response { | |
94c5c156 | 978 | struct sk_buff *resp; |
c46ee386 AAJ |
979 | struct completion done; |
980 | }; | |
981 | ||
94c5c156 WR |
982 | static int pn533_send_sync_complete(struct pn533 *dev, void *_arg, |
983 | struct sk_buff *resp) | |
984 | { | |
985 | struct pn533_sync_cmd_response *arg = _arg; | |
986 | ||
987 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
988 | ||
989 | arg->resp = resp; | |
990 | complete(&arg->done); | |
991 | ||
992 | return 0; | |
993 | } | |
994 | ||
995 | /* pn533_send_cmd_sync | |
996 | * | |
997 | * Please note the req parameter is freed inside the function to | |
998 | * limit a number of return value interpretations by the caller. | |
999 | * | |
1000 | * 1. negative in case of error during TX path -> req should be freed | |
1001 | * | |
1002 | * 2. negative in case of error during RX path -> req should not be freed | |
1003 | * as it's been already freed at the begining of RX path by | |
1004 | * async_complete_cb. | |
1005 | * | |
1006 | * 3. valid pointer in case of succesfult RX path | |
1007 | * | |
1008 | * A caller has to check a return value with IS_ERR macro. If the test pass, | |
1009 | * the returned pointer is valid. | |
1010 | * | |
1011 | * */ | |
1012 | static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code, | |
1013 | struct sk_buff *req) | |
1014 | { | |
1015 | int rc; | |
1016 | struct pn533_sync_cmd_response arg; | |
1017 | ||
1018 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1019 | ||
1020 | init_completion(&arg.done); | |
1021 | ||
1022 | rc = pn533_send_cmd_async(dev, cmd_code, req, | |
1023 | pn533_send_sync_complete, &arg); | |
1024 | if (rc) { | |
1025 | dev_kfree_skb(req); | |
1026 | return ERR_PTR(rc); | |
1027 | } | |
1028 | ||
1029 | wait_for_completion(&arg.done); | |
1030 | ||
1031 | return arg.resp; | |
1032 | } | |
1033 | ||
c46ee386 AAJ |
1034 | static void pn533_send_complete(struct urb *urb) |
1035 | { | |
1036 | struct pn533 *dev = urb->context; | |
1037 | ||
1038 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1039 | ||
1040 | switch (urb->status) { | |
1041 | case 0: | |
1042 | /* success */ | |
1043 | break; | |
1044 | case -ECONNRESET: | |
1045 | case -ENOENT: | |
1046 | case -ESHUTDOWN: | |
6ca55372 WR |
1047 | nfc_dev_dbg(&dev->interface->dev, |
1048 | "Urb shutting down with status: %d", urb->status); | |
c46ee386 AAJ |
1049 | break; |
1050 | default: | |
6ca55372 WR |
1051 | nfc_dev_dbg(&dev->interface->dev, |
1052 | "Nonzero urb status received: %d", urb->status); | |
c46ee386 AAJ |
1053 | } |
1054 | } | |
1055 | ||
d22b2db6 WR |
1056 | static struct sk_buff *pn533_alloc_skb(unsigned int size) |
1057 | { | |
1058 | struct sk_buff *skb; | |
1059 | ||
1060 | skb = alloc_skb(PN533_FRAME_HEADER_LEN + | |
1061 | size + | |
1062 | PN533_FRAME_TAIL_LEN, GFP_KERNEL); | |
1063 | ||
1064 | if (skb) | |
1065 | skb_reserve(skb, PN533_FRAME_HEADER_LEN); | |
1066 | ||
1067 | return skb; | |
1068 | } | |
1069 | ||
c46ee386 AAJ |
1070 | struct pn533_target_type_a { |
1071 | __be16 sens_res; | |
1072 | u8 sel_res; | |
1073 | u8 nfcid_len; | |
1074 | u8 nfcid_data[]; | |
1075 | } __packed; | |
1076 | ||
1077 | ||
1078 | #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6)) | |
1079 | #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0)) | |
1080 | #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8)) | |
1081 | ||
1082 | #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00 | |
1083 | #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C | |
1084 | ||
1085 | #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5) | |
1086 | #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2) | |
1087 | ||
1088 | #define PN533_TYPE_A_SEL_PROT_MIFARE 0 | |
1089 | #define PN533_TYPE_A_SEL_PROT_ISO14443 1 | |
1090 | #define PN533_TYPE_A_SEL_PROT_DEP 2 | |
1091 | #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3 | |
1092 | ||
1093 | static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a, | |
1094 | int target_data_len) | |
1095 | { | |
1096 | u8 ssd; | |
1097 | u8 platconf; | |
1098 | ||
1099 | if (target_data_len < sizeof(struct pn533_target_type_a)) | |
1100 | return false; | |
1101 | ||
1102 | /* The lenght check of nfcid[] and ats[] are not being performed because | |
1103 | the values are not being used */ | |
1104 | ||
1105 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1106 | ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res); | |
1107 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res); | |
1108 | ||
1109 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1110 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1111 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1112 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1113 | return false; |
1114 | ||
1115 | /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */ | |
1116 | if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0) | |
1117 | return false; | |
1118 | ||
1119 | return true; | |
1120 | } | |
1121 | ||
1122 | static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1123 | int tgt_data_len) | |
1124 | { | |
1125 | struct pn533_target_type_a *tgt_type_a; | |
1126 | ||
37cf4fc6 | 1127 | tgt_type_a = (struct pn533_target_type_a *)tgt_data; |
c46ee386 AAJ |
1128 | |
1129 | if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len)) | |
1130 | return -EPROTO; | |
1131 | ||
1132 | switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) { | |
1133 | case PN533_TYPE_A_SEL_PROT_MIFARE: | |
1134 | nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK; | |
1135 | break; | |
1136 | case PN533_TYPE_A_SEL_PROT_ISO14443: | |
1137 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK; | |
1138 | break; | |
1139 | case PN533_TYPE_A_SEL_PROT_DEP: | |
1140 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
1141 | break; | |
1142 | case PN533_TYPE_A_SEL_PROT_ISO14443_DEP: | |
1143 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK | | |
1144 | NFC_PROTO_NFC_DEP_MASK; | |
1145 | break; | |
1146 | } | |
1147 | ||
1148 | nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res); | |
1149 | nfc_tgt->sel_res = tgt_type_a->sel_res; | |
c3b1e1e8 SO |
1150 | nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len; |
1151 | memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1152 | |
1153 | return 0; | |
1154 | } | |
1155 | ||
1156 | struct pn533_target_felica { | |
1157 | u8 pol_res; | |
1158 | u8 opcode; | |
1159 | u8 nfcid2[8]; | |
1160 | u8 pad[8]; | |
1161 | /* optional */ | |
1162 | u8 syst_code[]; | |
1163 | } __packed; | |
1164 | ||
1165 | #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01 | |
1166 | #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE | |
1167 | ||
1168 | static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica, | |
1169 | int target_data_len) | |
1170 | { | |
1171 | if (target_data_len < sizeof(struct pn533_target_felica)) | |
1172 | return false; | |
1173 | ||
1174 | if (felica->opcode != PN533_FELICA_OPC_SENSF_RES) | |
1175 | return false; | |
1176 | ||
1177 | return true; | |
1178 | } | |
1179 | ||
1180 | static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1181 | int tgt_data_len) | |
1182 | { | |
1183 | struct pn533_target_felica *tgt_felica; | |
1184 | ||
37cf4fc6 | 1185 | tgt_felica = (struct pn533_target_felica *)tgt_data; |
c46ee386 AAJ |
1186 | |
1187 | if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len)) | |
1188 | return -EPROTO; | |
1189 | ||
5d467742 WR |
1190 | if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) && |
1191 | (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2)) | |
c46ee386 AAJ |
1192 | nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK; |
1193 | else | |
1194 | nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK; | |
1195 | ||
7975754f SO |
1196 | memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9); |
1197 | nfc_tgt->sensf_res_len = 9; | |
1198 | ||
c46ee386 AAJ |
1199 | return 0; |
1200 | } | |
1201 | ||
1202 | struct pn533_target_jewel { | |
1203 | __be16 sens_res; | |
1204 | u8 jewelid[4]; | |
1205 | } __packed; | |
1206 | ||
1207 | static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel, | |
1208 | int target_data_len) | |
1209 | { | |
1210 | u8 ssd; | |
1211 | u8 platconf; | |
1212 | ||
1213 | if (target_data_len < sizeof(struct pn533_target_jewel)) | |
1214 | return false; | |
1215 | ||
1216 | /* Requirement 4.6.3.3 from NFC Forum Digital Spec */ | |
1217 | ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res); | |
1218 | platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res); | |
1219 | ||
1220 | if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
5d467742 WR |
1221 | platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) || |
1222 | (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL && | |
1223 | platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL)) | |
c46ee386 AAJ |
1224 | return false; |
1225 | ||
1226 | return true; | |
1227 | } | |
1228 | ||
1229 | static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1230 | int tgt_data_len) | |
1231 | { | |
1232 | struct pn533_target_jewel *tgt_jewel; | |
1233 | ||
37cf4fc6 | 1234 | tgt_jewel = (struct pn533_target_jewel *)tgt_data; |
c46ee386 AAJ |
1235 | |
1236 | if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len)) | |
1237 | return -EPROTO; | |
1238 | ||
1239 | nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK; | |
1240 | nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res); | |
d8dc1072 SO |
1241 | nfc_tgt->nfcid1_len = 4; |
1242 | memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len); | |
c46ee386 AAJ |
1243 | |
1244 | return 0; | |
1245 | } | |
1246 | ||
1247 | struct pn533_type_b_prot_info { | |
1248 | u8 bitrate; | |
1249 | u8 fsci_type; | |
1250 | u8 fwi_adc_fo; | |
1251 | } __packed; | |
1252 | ||
1253 | #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4) | |
1254 | #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0) | |
1255 | #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8 | |
1256 | ||
1257 | struct pn533_type_b_sens_res { | |
1258 | u8 opcode; | |
1259 | u8 nfcid[4]; | |
1260 | u8 appdata[4]; | |
1261 | struct pn533_type_b_prot_info prot_info; | |
1262 | } __packed; | |
1263 | ||
1264 | #define PN533_TYPE_B_OPC_SENSB_RES 0x50 | |
1265 | ||
1266 | struct pn533_target_type_b { | |
1267 | struct pn533_type_b_sens_res sensb_res; | |
1268 | u8 attrib_res_len; | |
1269 | u8 attrib_res[]; | |
1270 | } __packed; | |
1271 | ||
1272 | static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b, | |
1273 | int target_data_len) | |
1274 | { | |
1275 | if (target_data_len < sizeof(struct pn533_target_type_b)) | |
1276 | return false; | |
1277 | ||
1278 | if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES) | |
1279 | return false; | |
1280 | ||
1281 | if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) & | |
1282 | PN533_TYPE_B_PROT_TYPE_RFU_MASK) | |
1283 | return false; | |
1284 | ||
1285 | return true; | |
1286 | } | |
1287 | ||
1288 | static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data, | |
1289 | int tgt_data_len) | |
1290 | { | |
1291 | struct pn533_target_type_b *tgt_type_b; | |
1292 | ||
37cf4fc6 | 1293 | tgt_type_b = (struct pn533_target_type_b *)tgt_data; |
c46ee386 AAJ |
1294 | |
1295 | if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len)) | |
1296 | return -EPROTO; | |
1297 | ||
01d719a2 | 1298 | nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK; |
c46ee386 AAJ |
1299 | |
1300 | return 0; | |
1301 | } | |
1302 | ||
b5193e5d WR |
1303 | static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata, |
1304 | int tgdata_len) | |
c46ee386 | 1305 | { |
c46ee386 AAJ |
1306 | struct nfc_target nfc_tgt; |
1307 | int rc; | |
1308 | ||
1309 | nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__, | |
b5193e5d | 1310 | dev->poll_mod_curr); |
c46ee386 | 1311 | |
b5193e5d | 1312 | if (tg != 1) |
c46ee386 AAJ |
1313 | return -EPROTO; |
1314 | ||
98b3ac1b SO |
1315 | memset(&nfc_tgt, 0, sizeof(struct nfc_target)); |
1316 | ||
c46ee386 AAJ |
1317 | switch (dev->poll_mod_curr) { |
1318 | case PN533_POLL_MOD_106KBPS_A: | |
b5193e5d | 1319 | rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1320 | break; |
1321 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1322 | case PN533_POLL_MOD_424KBPS_FELICA: | |
b5193e5d | 1323 | rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1324 | break; |
1325 | case PN533_POLL_MOD_106KBPS_JEWEL: | |
b5193e5d | 1326 | rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1327 | break; |
1328 | case PN533_POLL_MOD_847KBPS_B: | |
b5193e5d | 1329 | rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len); |
c46ee386 AAJ |
1330 | break; |
1331 | default: | |
b5193e5d WR |
1332 | nfc_dev_err(&dev->interface->dev, |
1333 | "Unknown current poll modulation"); | |
c46ee386 AAJ |
1334 | return -EPROTO; |
1335 | } | |
1336 | ||
1337 | if (rc) | |
1338 | return rc; | |
1339 | ||
1340 | if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) { | |
b5193e5d WR |
1341 | nfc_dev_dbg(&dev->interface->dev, |
1342 | "The Tg found doesn't have the desired protocol"); | |
c46ee386 AAJ |
1343 | return -EAGAIN; |
1344 | } | |
1345 | ||
b5193e5d WR |
1346 | nfc_dev_dbg(&dev->interface->dev, |
1347 | "Target found - supported protocols: 0x%x", | |
1348 | nfc_tgt.supported_protocols); | |
c46ee386 AAJ |
1349 | |
1350 | dev->tgt_available_prots = nfc_tgt.supported_protocols; | |
1351 | ||
1352 | nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1); | |
1353 | ||
1354 | return 0; | |
1355 | } | |
1356 | ||
6fbbdc16 SO |
1357 | static inline void pn533_poll_next_mod(struct pn533 *dev) |
1358 | { | |
1359 | dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count; | |
1360 | } | |
1361 | ||
c46ee386 AAJ |
1362 | static void pn533_poll_reset_mod_list(struct pn533 *dev) |
1363 | { | |
1364 | dev->poll_mod_count = 0; | |
1365 | } | |
1366 | ||
1367 | static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index) | |
1368 | { | |
1369 | dev->poll_mod_active[dev->poll_mod_count] = | |
37cf4fc6 | 1370 | (struct pn533_poll_modulations *)&poll_mod[mod_index]; |
c46ee386 AAJ |
1371 | dev->poll_mod_count++; |
1372 | } | |
1373 | ||
6fbbdc16 SO |
1374 | static void pn533_poll_create_mod_list(struct pn533 *dev, |
1375 | u32 im_protocols, u32 tm_protocols) | |
c46ee386 AAJ |
1376 | { |
1377 | pn533_poll_reset_mod_list(dev); | |
1378 | ||
6fbbdc16 SO |
1379 | if (im_protocols & NFC_PROTO_MIFARE_MASK |
1380 | || im_protocols & NFC_PROTO_ISO14443_MASK | |
1381 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) | |
c46ee386 AAJ |
1382 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A); |
1383 | ||
6fbbdc16 SO |
1384 | if (im_protocols & NFC_PROTO_FELICA_MASK |
1385 | || im_protocols & NFC_PROTO_NFC_DEP_MASK) { | |
c46ee386 AAJ |
1386 | pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA); |
1387 | pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA); | |
1388 | } | |
1389 | ||
6fbbdc16 | 1390 | if (im_protocols & NFC_PROTO_JEWEL_MASK) |
c46ee386 AAJ |
1391 | pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL); |
1392 | ||
01d719a2 | 1393 | if (im_protocols & NFC_PROTO_ISO14443_B_MASK) |
c46ee386 | 1394 | pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B); |
c46ee386 | 1395 | |
6fbbdc16 SO |
1396 | if (tm_protocols) |
1397 | pn533_poll_add_mod(dev, PN533_LISTEN_MOD); | |
c46ee386 AAJ |
1398 | } |
1399 | ||
b5193e5d | 1400 | static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp) |
c46ee386 | 1401 | { |
b5193e5d WR |
1402 | u8 nbtg, tg, *tgdata; |
1403 | int rc, tgdata_len; | |
c46ee386 AAJ |
1404 | |
1405 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1406 | ||
b5193e5d WR |
1407 | nbtg = resp->data[0]; |
1408 | tg = resp->data[1]; | |
1409 | tgdata = &resp->data[2]; | |
1410 | tgdata_len = resp->len - 2; /* nbtg + tg */ | |
1411 | ||
1412 | if (nbtg) { | |
1413 | rc = pn533_target_found(dev, tg, tgdata, tgdata_len); | |
c46ee386 AAJ |
1414 | |
1415 | /* We must stop the poll after a valid target found */ | |
6fbbdc16 SO |
1416 | if (rc == 0) { |
1417 | pn533_poll_reset_mod_list(dev); | |
1418 | return 0; | |
1419 | } | |
c46ee386 AAJ |
1420 | } |
1421 | ||
6fbbdc16 | 1422 | return -EAGAIN; |
c46ee386 AAJ |
1423 | } |
1424 | ||
b5193e5d | 1425 | static struct sk_buff *pn533_alloc_poll_tg_frame(u8 *gbytes, size_t gbytes_len) |
ad3823ce | 1426 | { |
b5193e5d WR |
1427 | struct sk_buff *skb; |
1428 | u8 *felica, *nfcid3, *gb; | |
1429 | ||
51d9e803 SO |
1430 | u8 felica_params[18] = {0x1, 0xfe, /* DEP */ |
1431 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */ | |
1432 | 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, | |
1433 | 0xff, 0xff}; /* System code */ | |
b5193e5d | 1434 | |
51d9e803 SO |
1435 | u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */ |
1436 | 0x0, 0x0, 0x0, | |
1437 | 0x40}; /* SEL_RES for DEP */ | |
ad3823ce | 1438 | |
b5193e5d WR |
1439 | unsigned int skb_len = 36 + /* mode (1), mifare (6), |
1440 | felica (18), nfcid3 (10), gb_len (1) */ | |
1441 | gbytes_len + | |
1442 | 1; /* len Tk*/ | |
ad3823ce | 1443 | |
b5193e5d WR |
1444 | skb = pn533_alloc_skb(skb_len); |
1445 | if (!skb) | |
1446 | return NULL; | |
ad3823ce SO |
1447 | |
1448 | /* DEP support only */ | |
b5193e5d WR |
1449 | *skb_put(skb, 1) |= PN533_INIT_TARGET_DEP; |
1450 | ||
1451 | /* MIFARE params */ | |
1452 | memcpy(skb_put(skb, 6), mifare_params, 6); | |
51d9e803 SO |
1453 | |
1454 | /* Felica params */ | |
b5193e5d WR |
1455 | felica = skb_put(skb, 18); |
1456 | memcpy(felica, felica_params, 18); | |
1457 | get_random_bytes(felica + 2, 6); | |
51d9e803 SO |
1458 | |
1459 | /* NFCID3 */ | |
b5193e5d WR |
1460 | nfcid3 = skb_put(skb, 10); |
1461 | memset(nfcid3, 0, 10); | |
1462 | memcpy(nfcid3, felica, 8); | |
51d9e803 SO |
1463 | |
1464 | /* General bytes */ | |
b5193e5d | 1465 | *skb_put(skb, 1) = gbytes_len; |
51d9e803 | 1466 | |
b5193e5d WR |
1467 | gb = skb_put(skb, gbytes_len); |
1468 | memcpy(gb, gbytes, gbytes_len); | |
ad3823ce | 1469 | |
b5193e5d WR |
1470 | /* Len Tk */ |
1471 | *skb_put(skb, 1) = 0; | |
51d9e803 | 1472 | |
b5193e5d | 1473 | return skb; |
ad3823ce SO |
1474 | } |
1475 | ||
b1bb290a | 1476 | #define PN533_CMD_DATAEXCH_HEAD_LEN 1 |
103b34cf SO |
1477 | #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262 |
1478 | static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg, | |
e4878823 | 1479 | struct sk_buff *resp) |
103b34cf | 1480 | { |
e4878823 | 1481 | u8 status; |
103b34cf SO |
1482 | |
1483 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1484 | ||
e4878823 WR |
1485 | if (IS_ERR(resp)) |
1486 | return PTR_ERR(resp); | |
103b34cf | 1487 | |
e4878823 WR |
1488 | status = resp->data[0]; |
1489 | skb_pull(resp, sizeof(status)); | |
103b34cf | 1490 | |
e4878823 | 1491 | if (status != 0) { |
103b34cf | 1492 | nfc_tm_deactivated(dev->nfc_dev); |
51ad304c | 1493 | dev->tgt_mode = 0; |
e4878823 | 1494 | dev_kfree_skb(resp); |
103b34cf SO |
1495 | return 0; |
1496 | } | |
1497 | ||
e4878823 | 1498 | return nfc_tm_data_received(dev->nfc_dev, resp); |
103b34cf SO |
1499 | } |
1500 | ||
1501 | static void pn533_wq_tg_get_data(struct work_struct *work) | |
1502 | { | |
1503 | struct pn533 *dev = container_of(work, struct pn533, tg_work); | |
103b34cf | 1504 | |
e4878823 WR |
1505 | struct sk_buff *skb; |
1506 | int rc; | |
103b34cf | 1507 | |
e4878823 | 1508 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
103b34cf | 1509 | |
e4878823 WR |
1510 | skb = pn533_alloc_skb(0); |
1511 | if (!skb) | |
103b34cf SO |
1512 | return; |
1513 | ||
e4878823 WR |
1514 | rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb, |
1515 | pn533_tm_get_data_complete, NULL); | |
103b34cf | 1516 | |
e4878823 WR |
1517 | if (rc < 0) |
1518 | dev_kfree_skb(skb); | |
103b34cf SO |
1519 | |
1520 | return; | |
1521 | } | |
1522 | ||
fc40a8c1 | 1523 | #define ATR_REQ_GB_OFFSET 17 |
b5193e5d | 1524 | static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp) |
fe7c5800 | 1525 | { |
b5193e5d | 1526 | u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb; |
fc40a8c1 | 1527 | size_t gb_len; |
103b34cf | 1528 | int rc; |
ad3823ce SO |
1529 | |
1530 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1531 | ||
b5193e5d | 1532 | if (resp->len < ATR_REQ_GB_OFFSET + 1) |
fc40a8c1 SO |
1533 | return -EINVAL; |
1534 | ||
b5193e5d WR |
1535 | mode = resp->data[0]; |
1536 | cmd = &resp->data[1]; | |
ad3823ce | 1537 | |
b5193e5d WR |
1538 | nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n", |
1539 | mode, resp->len); | |
ad3823ce | 1540 | |
b5193e5d WR |
1541 | if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) == |
1542 | PN533_INIT_TARGET_RESP_ACTIVE) | |
fc40a8c1 SO |
1543 | comm_mode = NFC_COMM_ACTIVE; |
1544 | ||
b5193e5d | 1545 | if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */ |
fc40a8c1 SO |
1546 | return -EOPNOTSUPP; |
1547 | ||
b5193e5d WR |
1548 | gb = cmd + ATR_REQ_GB_OFFSET; |
1549 | gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1); | |
fc40a8c1 | 1550 | |
103b34cf SO |
1551 | rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK, |
1552 | comm_mode, gb, gb_len); | |
1553 | if (rc < 0) { | |
1554 | nfc_dev_err(&dev->interface->dev, | |
1555 | "Error when signaling target activation"); | |
1556 | return rc; | |
1557 | } | |
1558 | ||
51ad304c | 1559 | dev->tgt_mode = 1; |
103b34cf SO |
1560 | queue_work(dev->wq, &dev->tg_work); |
1561 | ||
1562 | return 0; | |
fe7c5800 SO |
1563 | } |
1564 | ||
6fbbdc16 | 1565 | static void pn533_listen_mode_timer(unsigned long data) |
ad3823ce | 1566 | { |
37cf4fc6 | 1567 | struct pn533 *dev = (struct pn533 *)data; |
6fbbdc16 SO |
1568 | |
1569 | nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout"); | |
1570 | ||
1571 | /* An ack will cancel the last issued command (poll) */ | |
1572 | pn533_send_ack(dev, GFP_ATOMIC); | |
1573 | ||
1574 | dev->cancel_listen = 1; | |
1575 | ||
6fbbdc16 SO |
1576 | pn533_poll_next_mod(dev); |
1577 | ||
1578 | queue_work(dev->wq, &dev->poll_work); | |
1579 | } | |
1580 | ||
1581 | static int pn533_poll_complete(struct pn533 *dev, void *arg, | |
b5193e5d | 1582 | struct sk_buff *resp) |
6fbbdc16 SO |
1583 | { |
1584 | struct pn533_poll_modulations *cur_mod; | |
ad3823ce SO |
1585 | int rc; |
1586 | ||
6fbbdc16 | 1587 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
ad3823ce | 1588 | |
b5193e5d WR |
1589 | if (IS_ERR(resp)) { |
1590 | rc = PTR_ERR(resp); | |
1591 | ||
1592 | nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d", | |
1593 | __func__, rc); | |
1594 | ||
1595 | if (rc == -ENOENT) { | |
1596 | if (dev->poll_mod_count != 0) | |
1597 | return rc; | |
1598 | else | |
1599 | goto stop_poll; | |
1600 | } else if (rc < 0) { | |
1601 | nfc_dev_err(&dev->interface->dev, | |
1602 | "Error %d when running poll", rc); | |
1603 | goto stop_poll; | |
1604 | } | |
6fbbdc16 | 1605 | } |
ad3823ce | 1606 | |
6fbbdc16 SO |
1607 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; |
1608 | ||
b5193e5d | 1609 | if (cur_mod->len == 0) { /* Target mode */ |
6fbbdc16 | 1610 | del_timer(&dev->listen_timer); |
b5193e5d WR |
1611 | rc = pn533_init_target_complete(dev, resp); |
1612 | goto done; | |
6fbbdc16 SO |
1613 | } |
1614 | ||
b5193e5d WR |
1615 | /* Initiator mode */ |
1616 | rc = pn533_start_poll_complete(dev, resp); | |
1617 | if (!rc) | |
1618 | goto done; | |
6fbbdc16 | 1619 | |
b5193e5d | 1620 | pn533_poll_next_mod(dev); |
6fbbdc16 SO |
1621 | queue_work(dev->wq, &dev->poll_work); |
1622 | ||
b5193e5d WR |
1623 | done: |
1624 | dev_kfree_skb(resp); | |
1625 | return rc; | |
6fbbdc16 SO |
1626 | |
1627 | stop_poll: | |
b5193e5d WR |
1628 | nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped"); |
1629 | ||
6fbbdc16 SO |
1630 | pn533_poll_reset_mod_list(dev); |
1631 | dev->poll_protocols = 0; | |
b5193e5d | 1632 | return rc; |
ad3823ce SO |
1633 | } |
1634 | ||
b5193e5d WR |
1635 | static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533_poll_modulations |
1636 | *mod) | |
c46ee386 | 1637 | { |
b5193e5d | 1638 | struct sk_buff *skb; |
c46ee386 | 1639 | |
b5193e5d WR |
1640 | skb = pn533_alloc_skb(mod->len); |
1641 | if (!skb) | |
1642 | return NULL; | |
c46ee386 | 1643 | |
b5193e5d | 1644 | memcpy(skb_put(skb, mod->len), &mod->data, mod->len); |
c46ee386 | 1645 | |
b5193e5d | 1646 | return skb; |
6fbbdc16 | 1647 | } |
c46ee386 | 1648 | |
6fbbdc16 SO |
1649 | static int pn533_send_poll_frame(struct pn533 *dev) |
1650 | { | |
b5193e5d WR |
1651 | struct pn533_poll_modulations *mod; |
1652 | struct sk_buff *skb; | |
6fbbdc16 | 1653 | int rc; |
b5193e5d | 1654 | u8 cmd_code; |
c46ee386 | 1655 | |
b5193e5d | 1656 | mod = dev->poll_mod_active[dev->poll_mod_curr]; |
c46ee386 | 1657 | |
b5193e5d WR |
1658 | nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n", |
1659 | __func__, mod->len); | |
c46ee386 | 1660 | |
b5193e5d WR |
1661 | if (mod->len == 0) { /* Listen mode */ |
1662 | cmd_code = PN533_CMD_TG_INIT_AS_TARGET; | |
1663 | skb = pn533_alloc_poll_tg_frame(dev->gb, dev->gb_len); | |
1664 | } else { /* Polling mode */ | |
1665 | cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET; | |
1666 | skb = pn533_alloc_poll_in_frame(mod); | |
1667 | } | |
1668 | ||
1669 | if (!skb) { | |
1670 | nfc_dev_err(&dev->interface->dev, "Failed to allocate skb."); | |
1671 | return -ENOMEM; | |
1672 | } | |
1673 | ||
1674 | rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete, | |
1675 | NULL); | |
1676 | if (rc < 0) { | |
1677 | dev_kfree_skb(skb); | |
6fbbdc16 | 1678 | nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc); |
b5193e5d | 1679 | } |
c46ee386 | 1680 | |
6fbbdc16 SO |
1681 | return rc; |
1682 | } | |
1683 | ||
1684 | static void pn533_wq_poll(struct work_struct *work) | |
1685 | { | |
1686 | struct pn533 *dev = container_of(work, struct pn533, poll_work); | |
1687 | struct pn533_poll_modulations *cur_mod; | |
1688 | int rc; | |
1689 | ||
1690 | cur_mod = dev->poll_mod_active[dev->poll_mod_curr]; | |
1691 | ||
1692 | nfc_dev_dbg(&dev->interface->dev, | |
1693 | "%s cancel_listen %d modulation len %d", | |
1694 | __func__, dev->cancel_listen, cur_mod->len); | |
1695 | ||
1696 | if (dev->cancel_listen == 1) { | |
1697 | dev->cancel_listen = 0; | |
1698 | usb_kill_urb(dev->in_urb); | |
c46ee386 AAJ |
1699 | } |
1700 | ||
6fbbdc16 SO |
1701 | rc = pn533_send_poll_frame(dev); |
1702 | if (rc) | |
1703 | return; | |
c46ee386 | 1704 | |
6fbbdc16 SO |
1705 | if (cur_mod->len == 0 && dev->poll_mod_count > 1) |
1706 | mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ); | |
c46ee386 | 1707 | |
6fbbdc16 | 1708 | return; |
c46ee386 AAJ |
1709 | } |
1710 | ||
fe7c5800 SO |
1711 | static int pn533_start_poll(struct nfc_dev *nfc_dev, |
1712 | u32 im_protocols, u32 tm_protocols) | |
1713 | { | |
1714 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1715 | ||
1716 | nfc_dev_dbg(&dev->interface->dev, | |
1717 | "%s: im protocols 0x%x tm protocols 0x%x", | |
1718 | __func__, im_protocols, tm_protocols); | |
1719 | ||
1720 | if (dev->tgt_active_prot) { | |
1721 | nfc_dev_err(&dev->interface->dev, | |
1722 | "Cannot poll with a target already activated"); | |
1723 | return -EBUSY; | |
1724 | } | |
1725 | ||
51ad304c SO |
1726 | if (dev->tgt_mode) { |
1727 | nfc_dev_err(&dev->interface->dev, | |
1728 | "Cannot poll while already being activated"); | |
1729 | return -EBUSY; | |
1730 | } | |
1731 | ||
6fbbdc16 SO |
1732 | if (tm_protocols) { |
1733 | dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len); | |
1734 | if (dev->gb == NULL) | |
1735 | tm_protocols = 0; | |
1736 | } | |
ad3823ce | 1737 | |
6fbbdc16 SO |
1738 | dev->poll_mod_curr = 0; |
1739 | pn533_poll_create_mod_list(dev, im_protocols, tm_protocols); | |
1740 | dev->poll_protocols = im_protocols; | |
1741 | dev->listen_protocols = tm_protocols; | |
ad3823ce | 1742 | |
6fbbdc16 | 1743 | return pn533_send_poll_frame(dev); |
fe7c5800 SO |
1744 | } |
1745 | ||
c46ee386 AAJ |
1746 | static void pn533_stop_poll(struct nfc_dev *nfc_dev) |
1747 | { | |
1748 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1749 | ||
1750 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1751 | ||
6fbbdc16 SO |
1752 | del_timer(&dev->listen_timer); |
1753 | ||
c46ee386 | 1754 | if (!dev->poll_mod_count) { |
6ca55372 WR |
1755 | nfc_dev_dbg(&dev->interface->dev, |
1756 | "Polling operation was not running"); | |
c46ee386 AAJ |
1757 | return; |
1758 | } | |
1759 | ||
1760 | /* An ack will cancel the last issued command (poll) */ | |
1761 | pn533_send_ack(dev, GFP_KERNEL); | |
1762 | ||
1763 | /* prevent pn533_start_poll_complete to issue a new poll meanwhile */ | |
1764 | usb_kill_urb(dev->in_urb); | |
7c2a04a9 SO |
1765 | |
1766 | pn533_poll_reset_mod_list(dev); | |
c46ee386 AAJ |
1767 | } |
1768 | ||
1769 | static int pn533_activate_target_nfcdep(struct pn533 *dev) | |
1770 | { | |
cb950d93 | 1771 | struct pn533_cmd_activate_response *rsp; |
541d920b | 1772 | u16 gt_len; |
c46ee386 AAJ |
1773 | int rc; |
1774 | ||
cb950d93 WR |
1775 | struct sk_buff *skb; |
1776 | struct sk_buff *resp; | |
c46ee386 | 1777 | |
cb950d93 | 1778 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
c46ee386 | 1779 | |
cb950d93 WR |
1780 | skb = pn533_alloc_skb(sizeof(u8) * 2); /*TG + Next*/ |
1781 | if (!skb) | |
1782 | return -ENOMEM; | |
c46ee386 | 1783 | |
cb950d93 WR |
1784 | *skb_put(skb, sizeof(u8)) = 1; /* TG */ |
1785 | *skb_put(skb, sizeof(u8)) = 0; /* Next */ | |
c46ee386 | 1786 | |
cb950d93 WR |
1787 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb); |
1788 | if (IS_ERR(resp)) | |
1789 | return PTR_ERR(resp); | |
c46ee386 | 1790 | |
37cf4fc6 | 1791 | rsp = (struct pn533_cmd_activate_response *)resp->data; |
cb950d93 | 1792 | rc = rsp->status & PN533_CMD_RET_MASK; |
c46ee386 | 1793 | if (rc != PN533_CMD_RET_SUCCESS) |
cb950d93 | 1794 | dev_kfree_skb(resp); |
c46ee386 AAJ |
1795 | return -EIO; |
1796 | ||
541d920b | 1797 | /* ATR_RES general bytes are located at offset 16 */ |
cb950d93 WR |
1798 | gt_len = resp->len - 16; |
1799 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len); | |
541d920b | 1800 | |
cb950d93 | 1801 | dev_kfree_skb(resp); |
541d920b | 1802 | return rc; |
c46ee386 AAJ |
1803 | } |
1804 | ||
90099433 EL |
1805 | static int pn533_activate_target(struct nfc_dev *nfc_dev, |
1806 | struct nfc_target *target, u32 protocol) | |
c46ee386 AAJ |
1807 | { |
1808 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
1809 | int rc; | |
1810 | ||
1811 | nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__, | |
5d467742 | 1812 | protocol); |
c46ee386 AAJ |
1813 | |
1814 | if (dev->poll_mod_count) { | |
6ca55372 WR |
1815 | nfc_dev_err(&dev->interface->dev, |
1816 | "Cannot activate while polling"); | |
c46ee386 AAJ |
1817 | return -EBUSY; |
1818 | } | |
1819 | ||
1820 | if (dev->tgt_active_prot) { | |
6ca55372 WR |
1821 | nfc_dev_err(&dev->interface->dev, |
1822 | "There is already an active target"); | |
c46ee386 AAJ |
1823 | return -EBUSY; |
1824 | } | |
1825 | ||
1826 | if (!dev->tgt_available_prots) { | |
6ca55372 WR |
1827 | nfc_dev_err(&dev->interface->dev, |
1828 | "There is no available target to activate"); | |
c46ee386 AAJ |
1829 | return -EINVAL; |
1830 | } | |
1831 | ||
1832 | if (!(dev->tgt_available_prots & (1 << protocol))) { | |
6ca55372 WR |
1833 | nfc_dev_err(&dev->interface->dev, |
1834 | "Target doesn't support requested proto %u", | |
1835 | protocol); | |
c46ee386 AAJ |
1836 | return -EINVAL; |
1837 | } | |
1838 | ||
1839 | if (protocol == NFC_PROTO_NFC_DEP) { | |
1840 | rc = pn533_activate_target_nfcdep(dev); | |
1841 | if (rc) { | |
6ca55372 WR |
1842 | nfc_dev_err(&dev->interface->dev, |
1843 | "Activating target with DEP failed %d", rc); | |
c46ee386 AAJ |
1844 | return rc; |
1845 | } | |
1846 | } | |
1847 | ||
1848 | dev->tgt_active_prot = protocol; | |
1849 | dev->tgt_available_prots = 0; | |
1850 | ||
1851 | return 0; | |
1852 | } | |
1853 | ||
90099433 EL |
1854 | static void pn533_deactivate_target(struct nfc_dev *nfc_dev, |
1855 | struct nfc_target *target) | |
c46ee386 AAJ |
1856 | { |
1857 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
cb950d93 WR |
1858 | |
1859 | struct sk_buff *skb; | |
1860 | struct sk_buff *resp; | |
1861 | ||
c46ee386 AAJ |
1862 | int rc; |
1863 | ||
1864 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1865 | ||
1866 | if (!dev->tgt_active_prot) { | |
1867 | nfc_dev_err(&dev->interface->dev, "There is no active target"); | |
1868 | return; | |
1869 | } | |
1870 | ||
1871 | dev->tgt_active_prot = 0; | |
6ff73fd2 SO |
1872 | skb_queue_purge(&dev->resp_q); |
1873 | ||
cb950d93 WR |
1874 | skb = pn533_alloc_skb(sizeof(u8)); |
1875 | if (!skb) | |
1876 | return; | |
c46ee386 | 1877 | |
cb950d93 | 1878 | *skb_put(skb, 1) = 1; /* TG*/ |
c46ee386 | 1879 | |
cb950d93 WR |
1880 | resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb); |
1881 | if (IS_ERR(resp)) | |
c46ee386 | 1882 | return; |
c46ee386 | 1883 | |
cb950d93 | 1884 | rc = resp->data[0] & PN533_CMD_RET_MASK; |
c46ee386 | 1885 | if (rc != PN533_CMD_RET_SUCCESS) |
6ca55372 WR |
1886 | nfc_dev_err(&dev->interface->dev, |
1887 | "Error 0x%x when releasing the target", rc); | |
c46ee386 | 1888 | |
cb950d93 | 1889 | dev_kfree_skb(resp); |
c46ee386 AAJ |
1890 | return; |
1891 | } | |
1892 | ||
361f3cb7 SO |
1893 | |
1894 | static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg, | |
13003649 | 1895 | struct sk_buff *resp) |
361f3cb7 | 1896 | { |
13003649 | 1897 | struct pn533_cmd_jump_dep_response *rsp; |
361f3cb7 SO |
1898 | u8 target_gt_len; |
1899 | int rc; | |
13003649 | 1900 | u8 active = *(u8 *)arg; |
70418e6e WR |
1901 | |
1902 | kfree(arg); | |
361f3cb7 | 1903 | |
13003649 WR |
1904 | if (IS_ERR(resp)) |
1905 | return PTR_ERR(resp); | |
361f3cb7 SO |
1906 | |
1907 | if (dev->tgt_available_prots && | |
1908 | !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) { | |
1909 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1910 | "The target does not support DEP"); |
13003649 WR |
1911 | rc = -EINVAL; |
1912 | goto error; | |
361f3cb7 SO |
1913 | } |
1914 | ||
13003649 WR |
1915 | rsp = (struct pn533_cmd_jump_dep_response *)resp->data; |
1916 | ||
1917 | rc = rsp->status & PN533_CMD_RET_MASK; | |
361f3cb7 SO |
1918 | if (rc != PN533_CMD_RET_SUCCESS) { |
1919 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1920 | "Bringing DEP link up failed %d", rc); |
13003649 | 1921 | goto error; |
361f3cb7 SO |
1922 | } |
1923 | ||
1924 | if (!dev->tgt_available_prots) { | |
13003649 WR |
1925 | struct nfc_target nfc_target; |
1926 | ||
361f3cb7 SO |
1927 | nfc_dev_dbg(&dev->interface->dev, "Creating new target"); |
1928 | ||
1929 | nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK; | |
2fbabfa4 | 1930 | nfc_target.nfcid1_len = 10; |
13003649 | 1931 | memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len); |
361f3cb7 SO |
1932 | rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1); |
1933 | if (rc) | |
13003649 | 1934 | goto error; |
361f3cb7 SO |
1935 | |
1936 | dev->tgt_available_prots = 0; | |
1937 | } | |
1938 | ||
1939 | dev->tgt_active_prot = NFC_PROTO_NFC_DEP; | |
1940 | ||
1941 | /* ATR_RES general bytes are located at offset 17 */ | |
13003649 | 1942 | target_gt_len = resp->len - 17; |
361f3cb7 | 1943 | rc = nfc_set_remote_general_bytes(dev->nfc_dev, |
13003649 | 1944 | rsp->gt, target_gt_len); |
361f3cb7 SO |
1945 | if (rc == 0) |
1946 | rc = nfc_dep_link_is_up(dev->nfc_dev, | |
13003649 WR |
1947 | dev->nfc_dev->targets[0].idx, |
1948 | !active, NFC_RF_INITIATOR); | |
361f3cb7 | 1949 | |
13003649 WR |
1950 | error: |
1951 | dev_kfree_skb(resp); | |
1952 | return rc; | |
361f3cb7 SO |
1953 | } |
1954 | ||
41a8ec49 SO |
1955 | static int pn533_mod_to_baud(struct pn533 *dev) |
1956 | { | |
1957 | switch (dev->poll_mod_curr) { | |
1958 | case PN533_POLL_MOD_106KBPS_A: | |
1959 | return 0; | |
1960 | case PN533_POLL_MOD_212KBPS_FELICA: | |
1961 | return 1; | |
1962 | case PN533_POLL_MOD_424KBPS_FELICA: | |
1963 | return 2; | |
1964 | default: | |
1965 | return -EINVAL; | |
1966 | } | |
1967 | } | |
1968 | ||
d7f3345d | 1969 | #define PASSIVE_DATA_LEN 5 |
90099433 | 1970 | static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target, |
37cf4fc6 | 1971 | u8 comm_mode, u8 *gb, size_t gb_len) |
361f3cb7 SO |
1972 | { |
1973 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
13003649 WR |
1974 | struct sk_buff *skb; |
1975 | int rc, baud, skb_len; | |
1976 | u8 *next, *arg; | |
1977 | ||
d7f3345d | 1978 | u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3}; |
361f3cb7 SO |
1979 | |
1980 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
1981 | ||
361f3cb7 SO |
1982 | if (dev->poll_mod_count) { |
1983 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1984 | "Cannot bring the DEP link up while polling"); |
361f3cb7 SO |
1985 | return -EBUSY; |
1986 | } | |
1987 | ||
1988 | if (dev->tgt_active_prot) { | |
1989 | nfc_dev_err(&dev->interface->dev, | |
5d467742 | 1990 | "There is already an active target"); |
361f3cb7 SO |
1991 | return -EBUSY; |
1992 | } | |
1993 | ||
41a8ec49 SO |
1994 | baud = pn533_mod_to_baud(dev); |
1995 | if (baud < 0) { | |
1996 | nfc_dev_err(&dev->interface->dev, | |
1997 | "Invalid curr modulation %d", dev->poll_mod_curr); | |
1998 | return baud; | |
1999 | } | |
2000 | ||
13003649 | 2001 | skb_len = 3 + gb_len; /* ActPass + BR + Next */ |
d7f3345d | 2002 | if (comm_mode == NFC_COMM_PASSIVE) |
13003649 | 2003 | skb_len += PASSIVE_DATA_LEN; |
d7f3345d | 2004 | |
13003649 WR |
2005 | skb = pn533_alloc_skb(skb_len); |
2006 | if (!skb) | |
361f3cb7 SO |
2007 | return -ENOMEM; |
2008 | ||
13003649 WR |
2009 | *skb_put(skb, 1) = !comm_mode; /* ActPass */ |
2010 | *skb_put(skb, 1) = baud; /* Baud rate */ | |
2011 | ||
2012 | next = skb_put(skb, 1); /* Next */ | |
2013 | *next = 0; | |
361f3cb7 | 2014 | |
13003649 WR |
2015 | if (comm_mode == NFC_COMM_PASSIVE && baud > 0) { |
2016 | memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, | |
2017 | PASSIVE_DATA_LEN); | |
2018 | *next |= 1; | |
d7f3345d SO |
2019 | } |
2020 | ||
47807d3d | 2021 | if (gb != NULL && gb_len > 0) { |
13003649 WR |
2022 | memcpy(skb_put(skb, gb_len), gb, gb_len); |
2023 | *next |= 4; /* We have some Gi */ | |
361f3cb7 | 2024 | } else { |
13003649 | 2025 | *next = 0; |
361f3cb7 SO |
2026 | } |
2027 | ||
13003649 WR |
2028 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
2029 | if (!arg) { | |
2030 | dev_kfree_skb(skb); | |
2031 | return -ENOMEM; | |
2032 | } | |
361f3cb7 | 2033 | |
13003649 | 2034 | *arg = !comm_mode; |
361f3cb7 | 2035 | |
13003649 WR |
2036 | rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb, |
2037 | pn533_in_dep_link_up_complete, arg); | |
2038 | ||
2039 | if (rc < 0) { | |
2040 | dev_kfree_skb(skb); | |
2041 | kfree(arg); | |
2042 | } | |
361f3cb7 SO |
2043 | |
2044 | return rc; | |
2045 | } | |
2046 | ||
2047 | static int pn533_dep_link_down(struct nfc_dev *nfc_dev) | |
2048 | { | |
6fbbdc16 SO |
2049 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); |
2050 | ||
2051 | pn533_poll_reset_mod_list(dev); | |
2052 | ||
51ad304c SO |
2053 | if (dev->tgt_mode || dev->tgt_active_prot) { |
2054 | pn533_send_ack(dev, GFP_KERNEL); | |
2055 | usb_kill_urb(dev->in_urb); | |
2056 | } | |
2057 | ||
2058 | dev->tgt_active_prot = 0; | |
2059 | dev->tgt_mode = 0; | |
2060 | ||
2061 | skb_queue_purge(&dev->resp_q); | |
361f3cb7 SO |
2062 | |
2063 | return 0; | |
2064 | } | |
2065 | ||
c46ee386 | 2066 | struct pn533_data_exchange_arg { |
c46ee386 AAJ |
2067 | data_exchange_cb_t cb; |
2068 | void *cb_context; | |
2069 | }; | |
2070 | ||
6ff73fd2 SO |
2071 | static struct sk_buff *pn533_build_response(struct pn533 *dev) |
2072 | { | |
2073 | struct sk_buff *skb, *tmp, *t; | |
2074 | unsigned int skb_len = 0, tmp_len = 0; | |
2075 | ||
2076 | nfc_dev_dbg(&dev->interface->dev, "%s\n", __func__); | |
2077 | ||
2078 | if (skb_queue_empty(&dev->resp_q)) | |
2079 | return NULL; | |
2080 | ||
2081 | if (skb_queue_len(&dev->resp_q) == 1) { | |
2082 | skb = skb_dequeue(&dev->resp_q); | |
2083 | goto out; | |
2084 | } | |
2085 | ||
2086 | skb_queue_walk_safe(&dev->resp_q, tmp, t) | |
2087 | skb_len += tmp->len; | |
2088 | ||
2089 | nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n", | |
2090 | __func__, skb_len); | |
2091 | ||
2092 | skb = alloc_skb(skb_len, GFP_KERNEL); | |
2093 | if (skb == NULL) | |
2094 | goto out; | |
2095 | ||
2096 | skb_put(skb, skb_len); | |
2097 | ||
2098 | skb_queue_walk_safe(&dev->resp_q, tmp, t) { | |
2099 | memcpy(skb->data + tmp_len, tmp->data, tmp->len); | |
2100 | tmp_len += tmp->len; | |
2101 | } | |
2102 | ||
2103 | out: | |
2104 | skb_queue_purge(&dev->resp_q); | |
2105 | ||
2106 | return skb; | |
2107 | } | |
2108 | ||
c46ee386 | 2109 | static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg, |
b1e666f5 | 2110 | struct sk_buff *resp) |
c46ee386 AAJ |
2111 | { |
2112 | struct pn533_data_exchange_arg *arg = _arg; | |
b1e666f5 WR |
2113 | struct sk_buff *skb; |
2114 | int rc = 0; | |
2115 | u8 status, ret, mi; | |
c46ee386 AAJ |
2116 | |
2117 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2118 | ||
b1e666f5 WR |
2119 | if (IS_ERR(resp)) { |
2120 | rc = PTR_ERR(resp); | |
2121 | goto _error; | |
c46ee386 AAJ |
2122 | } |
2123 | ||
b1e666f5 WR |
2124 | status = resp->data[0]; |
2125 | ret = status & PN533_CMD_RET_MASK; | |
2126 | mi = status & PN533_CMD_MI_MASK; | |
2127 | ||
2128 | skb_pull(resp, sizeof(status)); | |
c46ee386 | 2129 | |
b1e666f5 WR |
2130 | if (ret != PN533_CMD_RET_SUCCESS) { |
2131 | nfc_dev_err(&dev->interface->dev, | |
2132 | "PN533 reported error %d when exchanging data", | |
2133 | ret); | |
2134 | rc = -EIO; | |
c46ee386 AAJ |
2135 | goto error; |
2136 | } | |
2137 | ||
b1e666f5 | 2138 | skb_queue_tail(&dev->resp_q, resp); |
6ff73fd2 | 2139 | |
b1e666f5 WR |
2140 | if (mi) { |
2141 | dev->cmd_complete_mi_arg = arg; | |
6ff73fd2 SO |
2142 | queue_work(dev->wq, &dev->mi_work); |
2143 | return -EINPROGRESS; | |
c46ee386 AAJ |
2144 | } |
2145 | ||
6ff73fd2 | 2146 | skb = pn533_build_response(dev); |
b1e666f5 | 2147 | if (!skb) |
6ff73fd2 | 2148 | goto error; |
c46ee386 | 2149 | |
6ff73fd2 | 2150 | arg->cb(arg->cb_context, skb, 0); |
c46ee386 AAJ |
2151 | kfree(arg); |
2152 | return 0; | |
2153 | ||
2154 | error: | |
b1e666f5 WR |
2155 | dev_kfree_skb(resp); |
2156 | _error: | |
6ff73fd2 | 2157 | skb_queue_purge(&dev->resp_q); |
b1e666f5 | 2158 | arg->cb(arg->cb_context, NULL, rc); |
c46ee386 | 2159 | kfree(arg); |
b1e666f5 | 2160 | return rc; |
c46ee386 AAJ |
2161 | } |
2162 | ||
be9ae4ce SO |
2163 | static int pn533_transceive(struct nfc_dev *nfc_dev, |
2164 | struct nfc_target *target, struct sk_buff *skb, | |
2165 | data_exchange_cb_t cb, void *cb_context) | |
c46ee386 AAJ |
2166 | { |
2167 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
b1e666f5 | 2168 | struct pn533_data_exchange_arg *arg = NULL; |
c46ee386 AAJ |
2169 | int rc; |
2170 | ||
2171 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2172 | ||
b1e666f5 WR |
2173 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
2174 | /* TODO: Implement support to multi-part data exchange */ | |
2175 | nfc_dev_err(&dev->interface->dev, | |
2176 | "Data length greater than the max allowed: %d", | |
2177 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2178 | rc = -ENOSYS; | |
2179 | goto error; | |
2180 | } | |
2181 | ||
c46ee386 | 2182 | if (!dev->tgt_active_prot) { |
6ca55372 WR |
2183 | nfc_dev_err(&dev->interface->dev, |
2184 | "Can't exchange data if there is no active target"); | |
c46ee386 AAJ |
2185 | rc = -EINVAL; |
2186 | goto error; | |
2187 | } | |
2188 | ||
b1e666f5 | 2189 | arg = kmalloc(sizeof(*arg), GFP_KERNEL); |
c46ee386 AAJ |
2190 | if (!arg) { |
2191 | rc = -ENOMEM; | |
b1e666f5 | 2192 | goto error; |
c46ee386 AAJ |
2193 | } |
2194 | ||
c46ee386 AAJ |
2195 | arg->cb = cb; |
2196 | arg->cb_context = cb_context; | |
2197 | ||
b1e666f5 WR |
2198 | switch (dev->device_type) { |
2199 | case PN533_DEVICE_PASORI: | |
2200 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2201 | rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU, | |
2202 | skb, | |
2203 | pn533_data_exchange_complete, | |
2204 | arg); | |
2205 | ||
2206 | break; | |
2207 | } | |
2208 | default: | |
2209 | *skb_push(skb, sizeof(u8)) = 1; /*TG*/ | |
2210 | ||
2211 | rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE, | |
2212 | skb, pn533_data_exchange_complete, | |
2213 | arg); | |
2214 | ||
2215 | break; | |
c46ee386 AAJ |
2216 | } |
2217 | ||
b1e666f5 WR |
2218 | if (rc < 0) /* rc from send_async */ |
2219 | goto error; | |
2220 | ||
c46ee386 AAJ |
2221 | return 0; |
2222 | ||
c46ee386 | 2223 | error: |
b1e666f5 WR |
2224 | kfree(arg); |
2225 | dev_kfree_skb(skb); | |
c46ee386 AAJ |
2226 | return rc; |
2227 | } | |
2228 | ||
dadb06f2 | 2229 | static int pn533_tm_send_complete(struct pn533 *dev, void *arg, |
e4878823 | 2230 | struct sk_buff *resp) |
dadb06f2 | 2231 | { |
e4878823 | 2232 | u8 status; |
5b412fd1 | 2233 | |
dadb06f2 SO |
2234 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); |
2235 | ||
e4878823 WR |
2236 | if (IS_ERR(resp)) |
2237 | return PTR_ERR(resp); | |
5b412fd1 | 2238 | |
e4878823 | 2239 | status = resp->data[0]; |
dadb06f2 | 2240 | |
e4878823 | 2241 | dev_kfree_skb(resp); |
dadb06f2 | 2242 | |
e4878823 | 2243 | if (status != 0) { |
dadb06f2 SO |
2244 | nfc_tm_deactivated(dev->nfc_dev); |
2245 | ||
51ad304c SO |
2246 | dev->tgt_mode = 0; |
2247 | ||
dadb06f2 SO |
2248 | return 0; |
2249 | } | |
2250 | ||
2251 | queue_work(dev->wq, &dev->tg_work); | |
2252 | ||
2253 | return 0; | |
2254 | } | |
2255 | ||
2256 | static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb) | |
2257 | { | |
2258 | struct pn533 *dev = nfc_get_drvdata(nfc_dev); | |
dadb06f2 SO |
2259 | int rc; |
2260 | ||
2261 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2262 | ||
e4878823 | 2263 | if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) { |
dadb06f2 | 2264 | nfc_dev_err(&dev->interface->dev, |
e4878823 WR |
2265 | "Data length greater than the max allowed: %d", |
2266 | PN533_CMD_DATAEXCH_DATA_MAXLEN); | |
2267 | return -ENOSYS; | |
dadb06f2 SO |
2268 | } |
2269 | ||
e4878823 WR |
2270 | rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb, |
2271 | pn533_tm_send_complete, NULL); | |
2272 | if (rc < 0) | |
2273 | dev_kfree_skb(skb); | |
dadb06f2 SO |
2274 | |
2275 | return rc; | |
2276 | } | |
2277 | ||
6ff73fd2 SO |
2278 | static void pn533_wq_mi_recv(struct work_struct *work) |
2279 | { | |
2280 | struct pn533 *dev = container_of(work, struct pn533, mi_work); | |
b1e666f5 WR |
2281 | |
2282 | struct sk_buff *skb; | |
6ff73fd2 SO |
2283 | int rc; |
2284 | ||
2285 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2286 | ||
b1e666f5 WR |
2287 | skb = pn533_alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN); |
2288 | if (!skb) | |
2289 | goto error; | |
6ff73fd2 | 2290 | |
b1e666f5 WR |
2291 | switch (dev->device_type) { |
2292 | case PN533_DEVICE_PASORI: | |
2293 | if (dev->tgt_active_prot == NFC_PROTO_FELICA) { | |
2294 | rc = pn533_send_cmd_direct_async(dev, | |
2295 | PN533_CMD_IN_COMM_THRU, | |
2296 | skb, | |
2297 | pn533_data_exchange_complete, | |
2298 | dev->cmd_complete_mi_arg); | |
6ff73fd2 | 2299 | |
b1e666f5 WR |
2300 | break; |
2301 | } | |
2302 | default: | |
2303 | *skb_put(skb, sizeof(u8)) = 1; /*TG*/ | |
6ff73fd2 | 2304 | |
b1e666f5 WR |
2305 | rc = pn533_send_cmd_direct_async(dev, |
2306 | PN533_CMD_IN_DATA_EXCHANGE, | |
2307 | skb, | |
2308 | pn533_data_exchange_complete, | |
2309 | dev->cmd_complete_mi_arg); | |
b1bb290a | 2310 | |
b1e666f5 | 2311 | break; |
6ff73fd2 SO |
2312 | } |
2313 | ||
b1e666f5 | 2314 | if (rc == 0) /* success */ |
6ff73fd2 SO |
2315 | return; |
2316 | ||
b1e666f5 WR |
2317 | nfc_dev_err(&dev->interface->dev, |
2318 | "Error %d when trying to perform data_exchange", rc); | |
6ff73fd2 | 2319 | |
b1e666f5 WR |
2320 | dev_kfree_skb(skb); |
2321 | kfree(dev->cmd_complete_arg); | |
6ff73fd2 | 2322 | |
b1e666f5 | 2323 | error: |
6ff73fd2 | 2324 | pn533_send_ack(dev, GFP_KERNEL); |
5d50b364 | 2325 | queue_work(dev->wq, &dev->cmd_work); |
6ff73fd2 SO |
2326 | } |
2327 | ||
c46ee386 AAJ |
2328 | static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata, |
2329 | u8 cfgdata_len) | |
2330 | { | |
cb950d93 WR |
2331 | struct sk_buff *skb; |
2332 | struct sk_buff *resp; | |
2333 | ||
2334 | int skb_len; | |
c46ee386 AAJ |
2335 | |
2336 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2337 | ||
cb950d93 | 2338 | skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */ |
c46ee386 | 2339 | |
cb950d93 WR |
2340 | skb = pn533_alloc_skb(skb_len); |
2341 | if (!skb) | |
2342 | return -ENOMEM; | |
c46ee386 | 2343 | |
cb950d93 WR |
2344 | *skb_put(skb, sizeof(cfgitem)) = cfgitem; |
2345 | memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len); | |
c46ee386 | 2346 | |
cb950d93 WR |
2347 | resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb); |
2348 | if (IS_ERR(resp)) | |
2349 | return PTR_ERR(resp); | |
c46ee386 | 2350 | |
cb950d93 WR |
2351 | dev_kfree_skb(resp); |
2352 | return 0; | |
2353 | } | |
2354 | ||
2355 | static int pn533_get_firmware_version(struct pn533 *dev, | |
2356 | struct pn533_fw_version *fv) | |
2357 | { | |
2358 | struct sk_buff *skb; | |
2359 | struct sk_buff *resp; | |
2360 | ||
2361 | skb = pn533_alloc_skb(0); | |
2362 | if (!skb) | |
2363 | return -ENOMEM; | |
2364 | ||
2365 | resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb); | |
2366 | if (IS_ERR(resp)) | |
2367 | return PTR_ERR(resp); | |
2368 | ||
2369 | fv->ic = resp->data[0]; | |
2370 | fv->ver = resp->data[1]; | |
2371 | fv->rev = resp->data[2]; | |
2372 | fv->support = resp->data[3]; | |
2373 | ||
2374 | dev_kfree_skb(resp); | |
2375 | return 0; | |
c46ee386 AAJ |
2376 | } |
2377 | ||
5c7b0531 SO |
2378 | static int pn533_fw_reset(struct pn533 *dev) |
2379 | { | |
cb950d93 WR |
2380 | struct sk_buff *skb; |
2381 | struct sk_buff *resp; | |
5c7b0531 SO |
2382 | |
2383 | nfc_dev_dbg(&dev->interface->dev, "%s", __func__); | |
2384 | ||
cb950d93 WR |
2385 | skb = pn533_alloc_skb(sizeof(u8)); |
2386 | if (!skb) | |
2387 | return -ENOMEM; | |
5c7b0531 | 2388 | |
cb950d93 | 2389 | *skb_put(skb, sizeof(u8)) = 0x1; |
5c7b0531 | 2390 | |
cb950d93 WR |
2391 | resp = pn533_send_cmd_sync(dev, 0x18, skb); |
2392 | if (IS_ERR(resp)) | |
2393 | return PTR_ERR(resp); | |
5c7b0531 | 2394 | |
cb950d93 | 2395 | dev_kfree_skb(resp); |
5c7b0531 | 2396 | |
94c5c156 | 2397 | return 0; |
5c7b0531 SO |
2398 | } |
2399 | ||
2400 | static struct nfc_ops pn533_nfc_ops = { | |
8b3fe7b5 IE |
2401 | .dev_up = NULL, |
2402 | .dev_down = NULL, | |
361f3cb7 SO |
2403 | .dep_link_up = pn533_dep_link_up, |
2404 | .dep_link_down = pn533_dep_link_down, | |
c46ee386 AAJ |
2405 | .start_poll = pn533_start_poll, |
2406 | .stop_poll = pn533_stop_poll, | |
2407 | .activate_target = pn533_activate_target, | |
2408 | .deactivate_target = pn533_deactivate_target, | |
be9ae4ce | 2409 | .im_transceive = pn533_transceive, |
dadb06f2 | 2410 | .tm_send = pn533_tm_send, |
c46ee386 AAJ |
2411 | }; |
2412 | ||
5c7b0531 SO |
2413 | static int pn533_setup(struct pn533 *dev) |
2414 | { | |
2415 | struct pn533_config_max_retries max_retries; | |
2416 | struct pn533_config_timing timing; | |
2417 | u8 pasori_cfg[3] = {0x08, 0x01, 0x08}; | |
2418 | int rc; | |
2419 | ||
2420 | switch (dev->device_type) { | |
2421 | case PN533_DEVICE_STD: | |
2422 | max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS; | |
2423 | max_retries.mx_rty_psl = 2; | |
2424 | max_retries.mx_rty_passive_act = | |
2425 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2426 | ||
2427 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2428 | timing.atr_res_timeout = PN533_CONFIG_TIMING_204; | |
2429 | timing.dep_timeout = PN533_CONFIG_TIMING_409; | |
2430 | ||
2431 | break; | |
2432 | ||
2433 | case PN533_DEVICE_PASORI: | |
2434 | max_retries.mx_rty_atr = 0x2; | |
2435 | max_retries.mx_rty_psl = 0x1; | |
2436 | max_retries.mx_rty_passive_act = | |
2437 | PN533_CONFIG_MAX_RETRIES_NO_RETRY; | |
2438 | ||
2439 | timing.rfu = PN533_CONFIG_TIMING_102; | |
2440 | timing.atr_res_timeout = PN533_CONFIG_TIMING_102; | |
2441 | timing.dep_timeout = PN533_CONFIG_TIMING_204; | |
2442 | ||
2443 | break; | |
2444 | ||
2445 | default: | |
2446 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2447 | dev->device_type); | |
2448 | return -EINVAL; | |
2449 | } | |
2450 | ||
2451 | rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES, | |
2452 | (u8 *)&max_retries, sizeof(max_retries)); | |
2453 | if (rc) { | |
2454 | nfc_dev_err(&dev->interface->dev, | |
2455 | "Error on setting MAX_RETRIES config"); | |
2456 | return rc; | |
2457 | } | |
2458 | ||
2459 | ||
2460 | rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING, | |
2461 | (u8 *)&timing, sizeof(timing)); | |
2462 | if (rc) { | |
2463 | nfc_dev_err(&dev->interface->dev, | |
2464 | "Error on setting RF timings"); | |
2465 | return rc; | |
2466 | } | |
2467 | ||
2468 | switch (dev->device_type) { | |
2469 | case PN533_DEVICE_STD: | |
2470 | break; | |
2471 | ||
2472 | case PN533_DEVICE_PASORI: | |
2473 | pn533_fw_reset(dev); | |
2474 | ||
2475 | rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI, | |
2476 | pasori_cfg, 3); | |
2477 | if (rc) { | |
2478 | nfc_dev_err(&dev->interface->dev, | |
2479 | "Error while settings PASORI config"); | |
2480 | return rc; | |
2481 | } | |
2482 | ||
2483 | pn533_fw_reset(dev); | |
2484 | ||
2485 | break; | |
2486 | } | |
2487 | ||
2488 | return 0; | |
2489 | } | |
2490 | ||
c46ee386 AAJ |
2491 | static int pn533_probe(struct usb_interface *interface, |
2492 | const struct usb_device_id *id) | |
2493 | { | |
cb950d93 | 2494 | struct pn533_fw_version fw_ver; |
c46ee386 AAJ |
2495 | struct pn533 *dev; |
2496 | struct usb_host_interface *iface_desc; | |
2497 | struct usb_endpoint_descriptor *endpoint; | |
c46ee386 AAJ |
2498 | int in_endpoint = 0; |
2499 | int out_endpoint = 0; | |
2500 | int rc = -ENOMEM; | |
2501 | int i; | |
2502 | u32 protocols; | |
2503 | ||
2504 | dev = kzalloc(sizeof(*dev), GFP_KERNEL); | |
2505 | if (!dev) | |
2506 | return -ENOMEM; | |
2507 | ||
2508 | dev->udev = usb_get_dev(interface_to_usbdev(interface)); | |
2509 | dev->interface = interface; | |
0201ed03 | 2510 | mutex_init(&dev->cmd_lock); |
c46ee386 AAJ |
2511 | |
2512 | iface_desc = interface->cur_altsetting; | |
2513 | for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) { | |
2514 | endpoint = &iface_desc->endpoint[i].desc; | |
2515 | ||
8d25ca79 | 2516 | if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) |
c46ee386 | 2517 | in_endpoint = endpoint->bEndpointAddress; |
c46ee386 | 2518 | |
8d25ca79 | 2519 | if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) |
c46ee386 | 2520 | out_endpoint = endpoint->bEndpointAddress; |
c46ee386 AAJ |
2521 | } |
2522 | ||
2523 | if (!in_endpoint || !out_endpoint) { | |
6ca55372 WR |
2524 | nfc_dev_err(&interface->dev, |
2525 | "Could not find bulk-in or bulk-out endpoint"); | |
c46ee386 AAJ |
2526 | rc = -ENODEV; |
2527 | goto error; | |
2528 | } | |
2529 | ||
82dec34d | 2530 | dev->in_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL); |
c46ee386 | 2531 | dev->in_urb = usb_alloc_urb(0, GFP_KERNEL); |
82dec34d | 2532 | dev->out_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL); |
c46ee386 AAJ |
2533 | dev->out_urb = usb_alloc_urb(0, GFP_KERNEL); |
2534 | ||
5d467742 | 2535 | if (!dev->in_frame || !dev->out_frame || !dev->in_urb || !dev->out_urb) |
c46ee386 AAJ |
2536 | goto error; |
2537 | ||
2538 | usb_fill_bulk_urb(dev->in_urb, dev->udev, | |
5d467742 WR |
2539 | usb_rcvbulkpipe(dev->udev, in_endpoint), |
2540 | NULL, 0, NULL, dev); | |
c46ee386 | 2541 | usb_fill_bulk_urb(dev->out_urb, dev->udev, |
5d467742 WR |
2542 | usb_sndbulkpipe(dev->udev, out_endpoint), |
2543 | NULL, 0, pn533_send_complete, dev); | |
c46ee386 | 2544 | |
5d50b364 SO |
2545 | INIT_WORK(&dev->cmd_work, pn533_wq_cmd); |
2546 | INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete); | |
6ff73fd2 | 2547 | INIT_WORK(&dev->mi_work, pn533_wq_mi_recv); |
103b34cf | 2548 | INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data); |
6fbbdc16 | 2549 | INIT_WORK(&dev->poll_work, pn533_wq_poll); |
58637c9b | 2550 | dev->wq = alloc_ordered_workqueue("pn533", 0); |
4849f85e SO |
2551 | if (dev->wq == NULL) |
2552 | goto error; | |
c46ee386 | 2553 | |
6fbbdc16 SO |
2554 | init_timer(&dev->listen_timer); |
2555 | dev->listen_timer.data = (unsigned long) dev; | |
2556 | dev->listen_timer.function = pn533_listen_mode_timer; | |
2557 | ||
6ff73fd2 SO |
2558 | skb_queue_head_init(&dev->resp_q); |
2559 | ||
5d50b364 SO |
2560 | INIT_LIST_HEAD(&dev->cmd_queue); |
2561 | ||
c46ee386 AAJ |
2562 | usb_set_intfdata(interface, dev); |
2563 | ||
cb950d93 WR |
2564 | memset(&fw_ver, 0, sizeof(fw_ver)); |
2565 | rc = pn533_get_firmware_version(dev, &fw_ver); | |
2566 | if (rc < 0) | |
4849f85e | 2567 | goto destroy_wq; |
c46ee386 | 2568 | |
cb950d93 WR |
2569 | nfc_dev_info(&dev->interface->dev, |
2570 | "NXP PN533 firmware ver %d.%d now attached", | |
2571 | fw_ver.ver, fw_ver.rev); | |
c46ee386 | 2572 | |
5c7b0531 SO |
2573 | dev->device_type = id->driver_info; |
2574 | switch (dev->device_type) { | |
2575 | case PN533_DEVICE_STD: | |
2576 | protocols = PN533_ALL_PROTOCOLS; | |
2577 | break; | |
2578 | ||
2579 | case PN533_DEVICE_PASORI: | |
2580 | protocols = PN533_NO_TYPE_B_PROTOCOLS; | |
2581 | break; | |
2582 | ||
2583 | default: | |
2584 | nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n", | |
2585 | dev->device_type); | |
2586 | rc = -EINVAL; | |
2587 | goto destroy_wq; | |
2588 | } | |
c46ee386 | 2589 | |
e8753043 | 2590 | dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols, |
b1bb290a | 2591 | PN533_FRAME_HEADER_LEN + |
e8753043 | 2592 | PN533_CMD_DATAEXCH_HEAD_LEN, |
b1bb290a | 2593 | PN533_FRAME_TAIL_LEN); |
c46ee386 | 2594 | if (!dev->nfc_dev) |
4849f85e | 2595 | goto destroy_wq; |
c46ee386 AAJ |
2596 | |
2597 | nfc_set_parent_dev(dev->nfc_dev, &interface->dev); | |
2598 | nfc_set_drvdata(dev->nfc_dev, dev); | |
2599 | ||
2600 | rc = nfc_register_device(dev->nfc_dev); | |
2601 | if (rc) | |
2602 | goto free_nfc_dev; | |
2603 | ||
5c7b0531 SO |
2604 | rc = pn533_setup(dev); |
2605 | if (rc) | |
34a85bfc | 2606 | goto unregister_nfc_dev; |
34a85bfc | 2607 | |
c46ee386 AAJ |
2608 | return 0; |
2609 | ||
9f2f8ba1 SO |
2610 | unregister_nfc_dev: |
2611 | nfc_unregister_device(dev->nfc_dev); | |
2612 | ||
c46ee386 AAJ |
2613 | free_nfc_dev: |
2614 | nfc_free_device(dev->nfc_dev); | |
9f2f8ba1 | 2615 | |
4849f85e SO |
2616 | destroy_wq: |
2617 | destroy_workqueue(dev->wq); | |
c46ee386 AAJ |
2618 | error: |
2619 | kfree(dev->in_frame); | |
2620 | usb_free_urb(dev->in_urb); | |
2621 | kfree(dev->out_frame); | |
2622 | usb_free_urb(dev->out_urb); | |
2623 | kfree(dev); | |
2624 | return rc; | |
2625 | } | |
2626 | ||
2627 | static void pn533_disconnect(struct usb_interface *interface) | |
2628 | { | |
2629 | struct pn533 *dev; | |
5d50b364 | 2630 | struct pn533_cmd *cmd, *n; |
c46ee386 AAJ |
2631 | |
2632 | dev = usb_get_intfdata(interface); | |
2633 | usb_set_intfdata(interface, NULL); | |
2634 | ||
2635 | nfc_unregister_device(dev->nfc_dev); | |
2636 | nfc_free_device(dev->nfc_dev); | |
2637 | ||
2638 | usb_kill_urb(dev->in_urb); | |
2639 | usb_kill_urb(dev->out_urb); | |
2640 | ||
4849f85e | 2641 | destroy_workqueue(dev->wq); |
c46ee386 | 2642 | |
6ff73fd2 SO |
2643 | skb_queue_purge(&dev->resp_q); |
2644 | ||
6fbbdc16 SO |
2645 | del_timer(&dev->listen_timer); |
2646 | ||
5d50b364 SO |
2647 | list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) { |
2648 | list_del(&cmd->queue); | |
2649 | kfree(cmd); | |
2650 | } | |
2651 | ||
c46ee386 AAJ |
2652 | kfree(dev->in_frame); |
2653 | usb_free_urb(dev->in_urb); | |
2654 | kfree(dev->out_frame); | |
2655 | usb_free_urb(dev->out_urb); | |
2656 | kfree(dev); | |
2657 | ||
276556db | 2658 | nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected"); |
c46ee386 AAJ |
2659 | } |
2660 | ||
2661 | static struct usb_driver pn533_driver = { | |
2662 | .name = "pn533", | |
2663 | .probe = pn533_probe, | |
2664 | .disconnect = pn533_disconnect, | |
2665 | .id_table = pn533_table, | |
2666 | }; | |
2667 | ||
fe748483 | 2668 | module_usb_driver(pn533_driver); |
c46ee386 AAJ |
2669 | |
2670 | MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>," | |
2671 | " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>"); | |
2672 | MODULE_DESCRIPTION("PN533 usb driver ver " VERSION); | |
2673 | MODULE_VERSION(VERSION); | |
2674 | MODULE_LICENSE("GPL"); |