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NFC: pn533: Remove unused pn533_send_cmd_frame_asy
[linux-2.6-block.git] / drivers / nfc / pn533.c
CommitLineData
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 58static 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};
76MODULE_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
135struct pn533;
136
137typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg,
138 u8 *params, int params_len);
139
aada17ac
WR		 140typedef 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 */
146struct 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
166struct 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		 172struct 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
194union 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 */
208enum {
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
220struct 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
229const 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		 289struct 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		 301struct 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		 323struct 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 332
6ff73fd2
SO		 333 struct sk_buff_head resp_q;
334
4849f85e
SO		 335 struct workqueue_struct *wq;
336 struct work_struct cmd_work;
5d50b364 337 struct work_struct cmd_complete_work;
6fbbdc16 338 struct work_struct poll_work;
6ff73fd2 339 struct work_struct mi_work;
103b34cf 340 struct work_struct tg_work;
6fbbdc16 341 struct timer_list listen_timer;
4849f85e
SO		 342 struct pn533_frame *wq_in_frame;
343 int wq_in_error;
6fbbdc16 344 int cancel_listen;
c46ee386
AAJ		 345
346 pn533_cmd_complete_t cmd_complete;
347 void *cmd_complete_arg;
b1e666f5 348 void *cmd_complete_mi_arg;
0201ed03 349 struct mutex cmd_lock;
c46ee386
AAJ		 350 u8 cmd;
351
352 struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1];
353 u8 poll_mod_count;
354 u8 poll_mod_curr;
355 u32 poll_protocols;
6fbbdc16
SO		 356 u32 listen_protocols;
357
358 u8 *gb;
359 size_t gb_len;
c46ee386
AAJ		 360
361 u8 tgt_available_prots;
362 u8 tgt_active_prot;
51ad304c 363 u8 tgt_mode;
5c7b0531
SO		 364
365 u32 device_type;
5d50b364
SO		 366
367 struct list_head cmd_queue;
368 u8 cmd_pending;
369};
370
371struct pn533_cmd {
372 struct list_head queue;
aada17ac
WR		 373 u8 cmd_code;
374 struct sk_buff *req;
375 struct sk_buff *resp;
5d50b364 376 void *arg;
c46ee386
AAJ		 377};
378
379struct pn533_frame {
380 u8 preamble;
381 __be16 start_frame;
382 u8 datalen;
383 u8 datalen_checksum;
384 u8 data[];
385} __packed;
386
387/* The rule: value + checksum = 0 */
388static inline u8 pn533_checksum(u8 value)
389{
390 return ~value + 1;
391}
392
393/* The rule: sum(data elements) + checksum = 0 */
394static u8 pn533_data_checksum(u8 *data, int datalen)
395{
396 u8 sum = 0;
397 int i;
398
399 for (i = 0; i < datalen; i++)
400 sum += data[i];
401
402 return pn533_checksum(sum);
403}
404
405/**
406 * pn533_tx_frame_ack - create a ack frame
407 * @frame: The frame to be set as ack
408 *
409 * Ack is different type of standard frame. As a standard frame, it has
410 * preamble and start_frame. However the checksum of this frame must fail,
411 * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test
412 * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack.
413 * After datalen_checksum field, the postamble is placed.
414 */
415static void pn533_tx_frame_ack(struct pn533_frame *frame)
416{
417 frame->preamble = 0;
418 frame->start_frame = cpu_to_be16(PN533_SOF);
419 frame->datalen = 0;
420 frame->datalen_checksum = 0xFF;
421 /* data[0] is used as postamble */
422 frame->data[0] = 0;
423}
424
425static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd)
426{
427 frame->preamble = 0;
428 frame->start_frame = cpu_to_be16(PN533_SOF);
429 PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT;
430 PN533_FRAME_CMD(frame) = cmd;
431 frame->datalen = 2;
432}
433
434static void pn533_tx_frame_finish(struct pn533_frame *frame)
435{
436 frame->datalen_checksum = pn533_checksum(frame->datalen);
437
438 PN533_FRAME_CHECKSUM(frame) =
439 pn533_data_checksum(frame->data, frame->datalen);
440
441 PN533_FRAME_POSTAMBLE(frame) = 0;
442}
443
444static bool pn533_rx_frame_is_valid(struct pn533_frame *frame)
445{
446 u8 checksum;
447
448 if (frame->start_frame != cpu_to_be16(PN533_SOF))
449 return false;
450
451 checksum = pn533_checksum(frame->datalen);
452 if (checksum != frame->datalen_checksum)
453 return false;
454
455 checksum = pn533_data_checksum(frame->data, frame->datalen);
456 if (checksum != PN533_FRAME_CHECKSUM(frame))
457 return false;
458
459 return true;
460}
461
462static bool pn533_rx_frame_is_ack(struct pn533_frame *frame)
463{
464 if (frame->start_frame != cpu_to_be16(PN533_SOF))
465 return false;
466
467 if (frame->datalen != 0 || frame->datalen_checksum != 0xFF)
468 return false;
469
470 return true;
471}
472
473static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd)
474{
475 return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd));
476}
477
4849f85e
SO		 478
479static void pn533_wq_cmd_complete(struct work_struct *work)
c46ee386 480{
5d50b364 481 struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
4849f85e 482 struct pn533_frame *in_frame;
c46ee386
AAJ		 483 int rc;
484
4849f85e
SO		 485 in_frame = dev->wq_in_frame;
486
487 if (dev->wq_in_error)
c46ee386 488 rc = dev->cmd_complete(dev, dev->cmd_complete_arg, NULL,
4849f85e 489 dev->wq_in_error);
c46ee386
AAJ		 490 else
491 rc = dev->cmd_complete(dev, dev->cmd_complete_arg,
492 PN533_FRAME_CMD_PARAMS_PTR(in_frame),
493 PN533_FRAME_CMD_PARAMS_LEN(in_frame));
494
495 if (rc != -EINPROGRESS)
5d50b364 496 queue_work(dev->wq, &dev->cmd_work);
c46ee386
AAJ		 497}
498
499static void pn533_recv_response(struct urb *urb)
500{
501 struct pn533 *dev = urb->context;
502 struct pn533_frame *in_frame;
503
4849f85e 504 dev->wq_in_frame = NULL;
c46ee386
AAJ		 505
506 switch (urb->status) {
507 case 0:
508 /* success */
509 break;
510 case -ECONNRESET:
511 case -ENOENT:
512 case -ESHUTDOWN:
6ca55372
WR		 513 nfc_dev_dbg(&dev->interface->dev,
514 "Urb shutting down with status: %d", urb->status);
4849f85e
SO		 515 dev->wq_in_error = urb->status;
516 goto sched_wq;
c46ee386 517 default:
6ca55372
WR		 518 nfc_dev_err(&dev->interface->dev,
519 "Nonzero urb status received: %d", urb->status);
4849f85e
SO		 520 dev->wq_in_error = urb->status;
521 goto sched_wq;
c46ee386
AAJ		 522 }
523
524 in_frame = dev->in_urb->transfer_buffer;
525
99e591be
WR		 526 print_hex_dump(KERN_DEBUG, "PN533 RX: ", DUMP_PREFIX_NONE, 16, 1,
527 in_frame, PN533_FRAME_SIZE(in_frame), false);
528
c46ee386
AAJ		 529 if (!pn533_rx_frame_is_valid(in_frame)) {
530 nfc_dev_err(&dev->interface->dev, "Received an invalid frame");
4849f85e
SO		 531 dev->wq_in_error = -EIO;
532 goto sched_wq;
c46ee386
AAJ		 533 }
534
535 if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) {
6ca55372
WR		 536 nfc_dev_err(&dev->interface->dev,
537 "It it not the response to the last command");
4849f85e
SO		 538 dev->wq_in_error = -EIO;
539 goto sched_wq;
c46ee386
AAJ		 540 }
541
542 nfc_dev_dbg(&dev->interface->dev, "Received a valid frame");
4849f85e
SO		 543 dev->wq_in_error = 0;
544 dev->wq_in_frame = in_frame;
c46ee386 545
4849f85e 546sched_wq:
5d50b364 547 queue_work(dev->wq, &dev->cmd_complete_work);
c46ee386
AAJ		 548}
549
550static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags)
551{
552 dev->in_urb->complete = pn533_recv_response;
553
554 return usb_submit_urb(dev->in_urb, flags);
555}
556
557static void pn533_recv_ack(struct urb *urb)
558{
559 struct pn533 *dev = urb->context;
560 struct pn533_frame *in_frame;
561 int rc;
562
563 switch (urb->status) {
564 case 0:
565 /* success */
566 break;
567 case -ECONNRESET:
568 case -ENOENT:
569 case -ESHUTDOWN:
6ca55372
WR		 570 nfc_dev_dbg(&dev->interface->dev,
571 "Urb shutting down with status: %d", urb->status);
4849f85e
SO		 572 dev->wq_in_error = urb->status;
573 goto sched_wq;
c46ee386 574 default:
6ca55372
WR		 575 nfc_dev_err(&dev->interface->dev,
576 "Nonzero urb status received: %d", urb->status);
4849f85e
SO		 577 dev->wq_in_error = urb->status;
578 goto sched_wq;
c46ee386
AAJ		 579 }
580
581 in_frame = dev->in_urb->transfer_buffer;
582
583 if (!pn533_rx_frame_is_ack(in_frame)) {
584 nfc_dev_err(&dev->interface->dev, "Received an invalid ack");
4849f85e
SO		 585 dev->wq_in_error = -EIO;
586 goto sched_wq;
c46ee386
AAJ		 587 }
588
589 nfc_dev_dbg(&dev->interface->dev, "Received a valid ack");
590
591 rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC);
592 if (rc) {
6ca55372
WR		 593 nfc_dev_err(&dev->interface->dev,
594 "usb_submit_urb failed with result %d", rc);
4849f85e
SO		 595 dev->wq_in_error = rc;
596 goto sched_wq;
c46ee386
AAJ		 597 }
598
599 return;
600
4849f85e
SO		 601sched_wq:
602 dev->wq_in_frame = NULL;
5d50b364 603 queue_work(dev->wq, &dev->cmd_complete_work);
c46ee386
AAJ		 604}
605
606static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags)
607{
608 dev->in_urb->complete = pn533_recv_ack;
609
610 return usb_submit_urb(dev->in_urb, flags);
611}
612
613static int pn533_send_ack(struct pn533 *dev, gfp_t flags)
614{
615 int rc;
616
617 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
618
619 pn533_tx_frame_ack(dev->out_frame);
620
621 dev->out_urb->transfer_buffer = dev->out_frame;
622 dev->out_urb->transfer_buffer_length = PN533_FRAME_ACK_SIZE;
623 rc = usb_submit_urb(dev->out_urb, flags);
624
625 return rc;
626}
627
628static int __pn533_send_cmd_frame_async(struct pn533 *dev,
629 struct pn533_frame *out_frame,
630 struct pn533_frame *in_frame,
631 int in_frame_len,
632 pn533_cmd_complete_t cmd_complete,
d94ea4f5 633 void *arg)
c46ee386
AAJ		 634{
635 int rc;
636
637 nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x",
5d467742 638 PN533_FRAME_CMD(out_frame));
c46ee386
AAJ		 639
640 dev->cmd = PN533_FRAME_CMD(out_frame);
641 dev->cmd_complete = cmd_complete;
642 dev->cmd_complete_arg = arg;
643
644 dev->out_urb->transfer_buffer = out_frame;
645 dev->out_urb->transfer_buffer_length =
646 PN533_FRAME_SIZE(out_frame);
647
648 dev->in_urb->transfer_buffer = in_frame;
649 dev->in_urb->transfer_buffer_length = in_frame_len;
650
99e591be
WR		 651 print_hex_dump(KERN_DEBUG, "PN533 TX: ", DUMP_PREFIX_NONE, 16, 1,
652 out_frame, PN533_FRAME_SIZE(out_frame), false);
653
d94ea4f5 654 rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
c46ee386
AAJ		 655 if (rc)
656 return rc;
657
d94ea4f5 658 rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL);
c46ee386
AAJ		 659 if (rc)
660 goto error;
661
662 return 0;
663
664error:
665 usb_unlink_urb(dev->out_urb);
666 return rc;
667}
668
aada17ac
WR		 669static void pn533_build_cmd_frame(u8 cmd_code, struct sk_buff *skb)
670{
671 struct pn533_frame *frame;
672 /* payload is already there, just update datalen */
673 int payload_len = skb->len;
674
675 skb_push(skb, PN533_FRAME_HEADER_LEN);
676 skb_put(skb, PN533_FRAME_TAIL_LEN);
677
678 frame = (struct pn533_frame *)skb->data;
679
680 pn533_tx_frame_init(frame, cmd_code);
681 frame->datalen += payload_len;
682 pn533_tx_frame_finish(frame);
683}
684
685struct pn533_send_async_complete_arg {
686 pn533_send_async_complete_t complete_cb;
687 void *complete_cb_context;
688 struct sk_buff *resp;
689 struct sk_buff *req;
690};
691
692static int pn533_send_async_complete(struct pn533 *dev, void *_arg, u8 *params,
693 int params_len)
694{
695 struct pn533_send_async_complete_arg *arg = _arg;
696
697 struct sk_buff *req = arg->req;
698 struct sk_buff *resp = arg->resp;
699
700 struct pn533_frame *frame = (struct pn533_frame *)resp->data;
701 int rc;
702
703 dev_kfree_skb(req);
704
705 if (params_len < 0) {
706 nfc_dev_err(&dev->interface->dev,
707 "Error %d when starting as a target",
708 params_len);
709
710 arg->complete_cb(dev, arg->complete_cb_context,
711 ERR_PTR(params_len));
712 rc = params_len;
713 dev_kfree_skb(resp);
714 goto out;
715 }
716
717 skb_put(resp, PN533_FRAME_SIZE(frame));
718 skb_pull(resp, PN533_FRAME_HEADER_LEN);
719 skb_trim(resp, resp->len - PN533_FRAME_TAIL_LEN);
720
721 rc = arg->complete_cb(dev, arg->complete_cb_context, resp);
722
723out:
724 kfree(arg);
725 return rc;
726}
727
728static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
729 struct sk_buff *req, struct sk_buff *resp,
730 int resp_len,
731 pn533_send_async_complete_t complete_cb,
732 void *complete_cb_context)
733{
734 struct pn533_cmd *cmd;
735 struct pn533_send_async_complete_arg *arg;
736 int rc = 0;
737
738 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
739
740 arg = kzalloc(sizeof(arg), GFP_KERNEL);
741 if (!arg)
742 return -ENOMEM;
743
744 arg->complete_cb = complete_cb;
745 arg->complete_cb_context = complete_cb_context;
746 arg->resp = resp;
747 arg->req = req;
748
749 pn533_build_cmd_frame(cmd_code, req);
750
751 mutex_lock(&dev->cmd_lock);
752
753 if (!dev->cmd_pending) {
754 rc = __pn533_send_cmd_frame_async(dev,
755 (struct pn533_frame *)req->data,
756 (struct pn533_frame *)resp->data,
757 resp_len, pn533_send_async_complete,
758 arg);
759 if (rc)
760 goto error;
761
762 dev->cmd_pending = 1;
763 goto unlock;
764 }
765
766 nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__);
767
768 cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL);
769 if (!cmd) {
770 rc = -ENOMEM;
771 goto error;
772 }
773
774 INIT_LIST_HEAD(&cmd->queue);
775 cmd->cmd_code = cmd_code;
776 cmd->req = req;
777 cmd->resp = resp;
778 cmd->arg = arg;
779
780 list_add_tail(&cmd->queue, &dev->cmd_queue);
781
782 goto unlock;
783
784error:
785 kfree(arg);
786unlock:
787 mutex_unlock(&dev->cmd_lock);
788 return rc;
15461aeb
WR		 789}
790
791static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code,
792 struct sk_buff *req,
793 pn533_send_async_complete_t complete_cb,
794 void *complete_cb_context)
795{
796 struct sk_buff *resp;
797 int rc;
798 int resp_len = PN533_FRAME_HEADER_LEN +
799 PN533_FRAME_MAX_PAYLOAD_LEN +
800 PN533_FRAME_TAIL_LEN;
801
802 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
803
804 resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL);
805 if (!resp)
806 return -ENOMEM;
807
808 rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb,
809 complete_cb_context);
810 if (rc)
811 dev_kfree_skb(resp);
812
813 return rc;
aada17ac
WR		 814}
815
816static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code,
817 struct sk_buff *req,
818 pn533_send_async_complete_t complete_cb,
819 void *complete_cb_context)
820{
821 struct sk_buff *resp;
822 int rc;
823
824 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
825
826 resp = alloc_skb(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
827 if (!resp)
828 return -ENOMEM;
829
830 rc = __pn533_send_async(dev, cmd_code, req, resp,
831 PN533_NORMAL_FRAME_MAX_LEN,
832 complete_cb, complete_cb_context);
833 if (rc)
834 dev_kfree_skb(resp);
835
836 return rc;
837}
838
b1e666f5
WR		 839/*
840 * pn533_send_cmd_direct_async
841 *
842 * The function sends a piority cmd directly to the chip omiting the cmd
843 * queue. It's intended to be used by chaining mechanism of received responses
844 * where the host has to request every single chunk of data before scheduling
845 * next cmd from the queue.
846 */
847static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
848 struct sk_buff *req,
849 pn533_send_async_complete_t complete_cb,
850 void *complete_cb_context)
851{
852 struct pn533_send_async_complete_arg *arg;
853 struct sk_buff *resp;
854 int rc;
855 int resp_len = PN533_FRAME_HEADER_LEN +
856 PN533_FRAME_MAX_PAYLOAD_LEN +
857 PN533_FRAME_TAIL_LEN;
858
859 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
860
861 resp = alloc_skb(resp_len, GFP_KERNEL);
862 if (!resp)
863 return -ENOMEM;
864
865 arg = kzalloc(sizeof(arg), GFP_KERNEL);
866 if (!arg) {
867 dev_kfree_skb(resp);
868 return -ENOMEM;
869 }
870
871 arg->complete_cb = complete_cb;
872 arg->complete_cb_context = complete_cb_context;
873 arg->resp = resp;
874 arg->req = req;
875
876 pn533_build_cmd_frame(cmd_code, req);
877
878 rc = __pn533_send_cmd_frame_async(dev, (struct pn533_frame *)req->data,
879 (struct pn533_frame *)resp->data,
880 resp_len, pn533_send_async_complete,
881 arg);
882 if (rc < 0) {
883 dev_kfree_skb(resp);
884 kfree(arg);
885 }
886
887 return rc;
888}
889
5d50b364
SO		 890static void pn533_wq_cmd(struct work_struct *work)
891{
892 struct pn533 *dev = container_of(work, struct pn533, cmd_work);
893 struct pn533_cmd *cmd;
894
895 mutex_lock(&dev->cmd_lock);
896
897 if (list_empty(&dev->cmd_queue)) {
898 dev->cmd_pending = 0;
899 mutex_unlock(&dev->cmd_lock);
900 return;
901 }
902
903 cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue);
904
60ad07ab
SJ		 905 list_del(&cmd->queue);
906
5d50b364
SO		 907 mutex_unlock(&dev->cmd_lock);
908
89fb2025
WR		 909 __pn533_send_cmd_frame_async(dev,
910 (struct pn533_frame *)cmd->req->data,
911 (struct pn533_frame *)cmd->resp->data,
912 PN533_NORMAL_FRAME_MAX_LEN,
913 pn533_send_async_complete,
914 cmd->arg);
5d50b364 915
5d50b364
SO		 916 kfree(cmd);
917}
918
c46ee386 919struct pn533_sync_cmd_response {
94c5c156 920 struct sk_buff *resp;
c46ee386
AAJ		 921 struct completion done;
922};
923
94c5c156
WR		 924static int pn533_send_sync_complete(struct pn533 *dev, void *_arg,
925 struct sk_buff *resp)
926{
927 struct pn533_sync_cmd_response *arg = _arg;
928
929 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
930
931 arg->resp = resp;
932 complete(&arg->done);
933
934 return 0;
935}
936
937/* pn533_send_cmd_sync
938 *
939 * Please note the req parameter is freed inside the function to
940 * limit a number of return value interpretations by the caller.
941 *
942 * 1. negative in case of error during TX path -> req should be freed
943 *
944 * 2. negative in case of error during RX path -> req should not be freed
945 * as it's been already freed at the begining of RX path by
946 * async_complete_cb.
947 *
948 * 3. valid pointer in case of succesfult RX path
949 *
950 * A caller has to check a return value with IS_ERR macro. If the test pass,
951 * the returned pointer is valid.
952 *
953 * */
954static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code,
955 struct sk_buff *req)
956{
957 int rc;
958 struct pn533_sync_cmd_response arg;
959
960 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
961
962 init_completion(&arg.done);
963
964 rc = pn533_send_cmd_async(dev, cmd_code, req,
965 pn533_send_sync_complete, &arg);
966 if (rc) {
967 dev_kfree_skb(req);
968 return ERR_PTR(rc);
969 }
970
971 wait_for_completion(&arg.done);
972
973 return arg.resp;
974}
975
c46ee386
AAJ		 976static void pn533_send_complete(struct urb *urb)
977{
978 struct pn533 *dev = urb->context;
979
980 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
981
982 switch (urb->status) {
983 case 0:
984 /* success */
985 break;
986 case -ECONNRESET:
987 case -ENOENT:
988 case -ESHUTDOWN:
6ca55372
WR		 989 nfc_dev_dbg(&dev->interface->dev,
990 "Urb shutting down with status: %d", urb->status);
c46ee386
AAJ		 991 break;
992 default:
6ca55372
WR		 993 nfc_dev_dbg(&dev->interface->dev,
994 "Nonzero urb status received: %d", urb->status);
c46ee386
AAJ		 995 }
996}
997
d22b2db6
WR		 998static struct sk_buff *pn533_alloc_skb(unsigned int size)
999{
1000 struct sk_buff *skb;
1001
1002 skb = alloc_skb(PN533_FRAME_HEADER_LEN +
1003 size +
1004 PN533_FRAME_TAIL_LEN, GFP_KERNEL);
1005
1006 if (skb)
1007 skb_reserve(skb, PN533_FRAME_HEADER_LEN);
1008
1009 return skb;
1010}
1011
c46ee386
AAJ		 1012struct pn533_target_type_a {
1013 __be16 sens_res;
1014 u8 sel_res;
1015 u8 nfcid_len;
1016 u8 nfcid_data[];
1017} __packed;
1018
1019
1020#define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
1021#define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
1022#define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
1023
1024#define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
1025#define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
1026
1027#define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
1028#define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
1029
1030#define PN533_TYPE_A_SEL_PROT_MIFARE 0
1031#define PN533_TYPE_A_SEL_PROT_ISO14443 1
1032#define PN533_TYPE_A_SEL_PROT_DEP 2
1033#define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
1034
1035static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a,
1036 int target_data_len)
1037{
1038 u8 ssd;
1039 u8 platconf;
1040
1041 if (target_data_len < sizeof(struct pn533_target_type_a))
1042 return false;
1043
1044 /* The lenght check of nfcid[] and ats[] are not being performed because
1045 the values are not being used */
1046
1047 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
1048 ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res);
1049 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res);
1050
1051 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
5d467742
WR		 1052 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
1053 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
1054 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
c46ee386
AAJ		 1055 return false;
1056
1057 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
1058 if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0)
1059 return false;
1060
1061 return true;
1062}
1063
1064static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data,
1065 int tgt_data_len)
1066{
1067 struct pn533_target_type_a *tgt_type_a;
1068
37cf4fc6 1069 tgt_type_a = (struct pn533_target_type_a *)tgt_data;
c46ee386
AAJ		 1070
1071 if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len))
1072 return -EPROTO;
1073
1074 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) {
1075 case PN533_TYPE_A_SEL_PROT_MIFARE:
1076 nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK;
1077 break;
1078 case PN533_TYPE_A_SEL_PROT_ISO14443:
1079 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK;
1080 break;
1081 case PN533_TYPE_A_SEL_PROT_DEP:
1082 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1083 break;
1084 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP:
1085 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK |
1086 NFC_PROTO_NFC_DEP_MASK;
1087 break;
1088 }
1089
1090 nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res);
1091 nfc_tgt->sel_res = tgt_type_a->sel_res;
c3b1e1e8
SO		 1092 nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len;
1093 memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len);
c46ee386
AAJ		 1094
1095 return 0;
1096}
1097
1098struct pn533_target_felica {
1099 u8 pol_res;
1100 u8 opcode;
1101 u8 nfcid2[8];
1102 u8 pad[8];
1103 /* optional */
1104 u8 syst_code[];
1105} __packed;
1106
1107#define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
1108#define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
1109
1110static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica,
1111 int target_data_len)
1112{
1113 if (target_data_len < sizeof(struct pn533_target_felica))
1114 return false;
1115
1116 if (felica->opcode != PN533_FELICA_OPC_SENSF_RES)
1117 return false;
1118
1119 return true;
1120}
1121
1122static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data,
1123 int tgt_data_len)
1124{
1125 struct pn533_target_felica *tgt_felica;
1126
37cf4fc6 1127 tgt_felica = (struct pn533_target_felica *)tgt_data;
c46ee386
AAJ		 1128
1129 if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len))
1130 return -EPROTO;
1131
5d467742
WR		 1132 if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) &&
1133 (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2))
c46ee386
AAJ		 1134 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1135 else
1136 nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK;
1137
7975754f
SO		 1138 memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9);
1139 nfc_tgt->sensf_res_len = 9;
1140
c46ee386
AAJ		 1141 return 0;
1142}
1143
1144struct pn533_target_jewel {
1145 __be16 sens_res;
1146 u8 jewelid[4];
1147} __packed;
1148
1149static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel,
1150 int target_data_len)
1151{
1152 u8 ssd;
1153 u8 platconf;
1154
1155 if (target_data_len < sizeof(struct pn533_target_jewel))
1156 return false;
1157
1158 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
1159 ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res);
1160 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res);
1161
1162 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
5d467742
WR		 1163 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
1164 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
1165 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
c46ee386
AAJ		 1166 return false;
1167
1168 return true;
1169}
1170
1171static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data,
1172 int tgt_data_len)
1173{
1174 struct pn533_target_jewel *tgt_jewel;
1175
37cf4fc6 1176 tgt_jewel = (struct pn533_target_jewel *)tgt_data;
c46ee386
AAJ		 1177
1178 if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len))
1179 return -EPROTO;
1180
1181 nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK;
1182 nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res);
d8dc1072
SO		 1183 nfc_tgt->nfcid1_len = 4;
1184 memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len);
c46ee386
AAJ		 1185
1186 return 0;
1187}
1188
1189struct pn533_type_b_prot_info {
1190 u8 bitrate;
1191 u8 fsci_type;
1192 u8 fwi_adc_fo;
1193} __packed;
1194
1195#define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
1196#define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
1197#define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
1198
1199struct pn533_type_b_sens_res {
1200 u8 opcode;
1201 u8 nfcid[4];
1202 u8 appdata[4];
1203 struct pn533_type_b_prot_info prot_info;
1204} __packed;
1205
1206#define PN533_TYPE_B_OPC_SENSB_RES 0x50
1207
1208struct pn533_target_type_b {
1209 struct pn533_type_b_sens_res sensb_res;
1210 u8 attrib_res_len;
1211 u8 attrib_res[];
1212} __packed;
1213
1214static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b,
1215 int target_data_len)
1216{
1217 if (target_data_len < sizeof(struct pn533_target_type_b))
1218 return false;
1219
1220 if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES)
1221 return false;
1222
1223 if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) &
1224 PN533_TYPE_B_PROT_TYPE_RFU_MASK)
1225 return false;
1226
1227 return true;
1228}
1229
1230static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data,
1231 int tgt_data_len)
1232{
1233 struct pn533_target_type_b *tgt_type_b;
1234
37cf4fc6 1235 tgt_type_b = (struct pn533_target_type_b *)tgt_data;
c46ee386
AAJ		 1236
1237 if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len))
1238 return -EPROTO;
1239
01d719a2 1240 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
c46ee386
AAJ		 1241
1242 return 0;
1243}
1244
b5193e5d
WR		 1245static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
1246 int tgdata_len)
c46ee386 1247{
c46ee386
AAJ		 1248 struct nfc_target nfc_tgt;
1249 int rc;
1250
1251 nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__,
b5193e5d 1252 dev->poll_mod_curr);
c46ee386 1253
b5193e5d 1254 if (tg != 1)
c46ee386
AAJ		 1255 return -EPROTO;
1256
98b3ac1b
SO		 1257 memset(&nfc_tgt, 0, sizeof(struct nfc_target));
1258
c46ee386
AAJ		 1259 switch (dev->poll_mod_curr) {
1260 case PN533_POLL_MOD_106KBPS_A:
b5193e5d 1261 rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1262 break;
1263 case PN533_POLL_MOD_212KBPS_FELICA:
1264 case PN533_POLL_MOD_424KBPS_FELICA:
b5193e5d 1265 rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1266 break;
1267 case PN533_POLL_MOD_106KBPS_JEWEL:
b5193e5d 1268 rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1269 break;
1270 case PN533_POLL_MOD_847KBPS_B:
b5193e5d 1271 rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1272 break;
1273 default:
b5193e5d
WR		 1274 nfc_dev_err(&dev->interface->dev,
1275 "Unknown current poll modulation");
c46ee386
AAJ		 1276 return -EPROTO;
1277 }
1278
1279 if (rc)
1280 return rc;
1281
1282 if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
b5193e5d
WR		 1283 nfc_dev_dbg(&dev->interface->dev,
1284 "The Tg found doesn't have the desired protocol");
c46ee386
AAJ		 1285 return -EAGAIN;
1286 }
1287
b5193e5d
WR		 1288 nfc_dev_dbg(&dev->interface->dev,
1289 "Target found - supported protocols: 0x%x",
1290 nfc_tgt.supported_protocols);
c46ee386
AAJ		 1291
1292 dev->tgt_available_prots = nfc_tgt.supported_protocols;
1293
1294 nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1);
1295
1296 return 0;
1297}
1298
6fbbdc16
SO		 1299static inline void pn533_poll_next_mod(struct pn533 *dev)
1300{
1301 dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count;
1302}
1303
c46ee386
AAJ		 1304static void pn533_poll_reset_mod_list(struct pn533 *dev)
1305{
1306 dev->poll_mod_count = 0;
1307}
1308
1309static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index)
1310{
1311 dev->poll_mod_active[dev->poll_mod_count] =
37cf4fc6 1312 (struct pn533_poll_modulations *)&poll_mod[mod_index];
c46ee386
AAJ		 1313 dev->poll_mod_count++;
1314}
1315
6fbbdc16
SO		 1316static void pn533_poll_create_mod_list(struct pn533 *dev,
1317 u32 im_protocols, u32 tm_protocols)
c46ee386
AAJ		 1318{
1319 pn533_poll_reset_mod_list(dev);
1320
b08e8603
WR		 1321 if ((im_protocols & NFC_PROTO_MIFARE_MASK) ||
1322 (im_protocols & NFC_PROTO_ISO14443_MASK) ||
1323 (im_protocols & NFC_PROTO_NFC_DEP_MASK))
c46ee386
AAJ		 1324 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A);
1325
b08e8603
WR		 1326 if (im_protocols & NFC_PROTO_FELICA_MASK ||
1327 im_protocols & NFC_PROTO_NFC_DEP_MASK) {
c46ee386
AAJ		 1328 pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA);
1329 pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA);
1330 }
1331
6fbbdc16 1332 if (im_protocols & NFC_PROTO_JEWEL_MASK)
c46ee386
AAJ		 1333 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL);
1334
01d719a2 1335 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
c46ee386 1336 pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B);
c46ee386 1337
6fbbdc16
SO		 1338 if (tm_protocols)
1339 pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
c46ee386
AAJ		 1340}
1341
b5193e5d 1342static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp)
c46ee386 1343{
b5193e5d
WR		 1344 u8 nbtg, tg, *tgdata;
1345 int rc, tgdata_len;
c46ee386
AAJ		 1346
1347 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1348
b5193e5d
WR		 1349 nbtg = resp->data[0];
1350 tg = resp->data[1];
1351 tgdata = &resp->data[2];
1352 tgdata_len = resp->len - 2; /* nbtg + tg */
1353
1354 if (nbtg) {
1355 rc = pn533_target_found(dev, tg, tgdata, tgdata_len);
c46ee386
AAJ		 1356
1357 /* We must stop the poll after a valid target found */
6fbbdc16
SO		 1358 if (rc == 0) {
1359 pn533_poll_reset_mod_list(dev);
1360 return 0;
1361 }
c46ee386
AAJ		 1362 }
1363
6fbbdc16 1364 return -EAGAIN;
c46ee386
AAJ		 1365}
1366
b5193e5d 1367static struct sk_buff *pn533_alloc_poll_tg_frame(u8 *gbytes, size_t gbytes_len)
ad3823ce 1368{
b5193e5d
WR		 1369 struct sk_buff *skb;
1370 u8 *felica, *nfcid3, *gb;
1371
51d9e803
SO		 1372 u8 felica_params[18] = {0x1, 0xfe, /* DEP */
1373 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */
1374 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1375 0xff, 0xff}; /* System code */
b5193e5d 1376
51d9e803
SO		 1377 u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */
1378 0x0, 0x0, 0x0,
1379 0x40}; /* SEL_RES for DEP */
ad3823ce 1380
b5193e5d
WR		 1381 unsigned int skb_len = 36 + /* mode (1), mifare (6),
1382 felica (18), nfcid3 (10), gb_len (1) */
1383 gbytes_len +
1384 1; /* len Tk*/
ad3823ce 1385
b5193e5d
WR		 1386 skb = pn533_alloc_skb(skb_len);
1387 if (!skb)
1388 return NULL;
ad3823ce
SO		 1389
1390 /* DEP support only */
b5193e5d
WR		 1391 *skb_put(skb, 1) |= PN533_INIT_TARGET_DEP;
1392
1393 /* MIFARE params */
1394 memcpy(skb_put(skb, 6), mifare_params, 6);
51d9e803
SO		 1395
1396 /* Felica params */
b5193e5d
WR		 1397 felica = skb_put(skb, 18);
1398 memcpy(felica, felica_params, 18);
1399 get_random_bytes(felica + 2, 6);
51d9e803
SO		 1400
1401 /* NFCID3 */
b5193e5d
WR		 1402 nfcid3 = skb_put(skb, 10);
1403 memset(nfcid3, 0, 10);
1404 memcpy(nfcid3, felica, 8);
51d9e803
SO		 1405
1406 /* General bytes */
b5193e5d 1407 *skb_put(skb, 1) = gbytes_len;
51d9e803 1408
b5193e5d
WR		 1409 gb = skb_put(skb, gbytes_len);
1410 memcpy(gb, gbytes, gbytes_len);
ad3823ce 1411
b5193e5d
WR		 1412 /* Len Tk */
1413 *skb_put(skb, 1) = 0;
51d9e803 1414
b5193e5d 1415 return skb;
ad3823ce
SO		 1416}
1417
b1bb290a 1418#define PN533_CMD_DATAEXCH_HEAD_LEN 1
103b34cf
SO		 1419#define PN533_CMD_DATAEXCH_DATA_MAXLEN 262
1420static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,
e4878823 1421 struct sk_buff *resp)
103b34cf 1422{
e4878823 1423 u8 status;
103b34cf
SO		 1424
1425 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1426
e4878823
WR		 1427 if (IS_ERR(resp))
1428 return PTR_ERR(resp);
103b34cf 1429
e4878823
WR		 1430 status = resp->data[0];
1431 skb_pull(resp, sizeof(status));
103b34cf 1432
e4878823 1433 if (status != 0) {
103b34cf 1434 nfc_tm_deactivated(dev->nfc_dev);
51ad304c 1435 dev->tgt_mode = 0;
e4878823 1436 dev_kfree_skb(resp);
103b34cf
SO		 1437 return 0;
1438 }
1439
e4878823 1440 return nfc_tm_data_received(dev->nfc_dev, resp);
103b34cf
SO		 1441}
1442
1443static void pn533_wq_tg_get_data(struct work_struct *work)
1444{
1445 struct pn533 *dev = container_of(work, struct pn533, tg_work);
103b34cf 1446
e4878823
WR		 1447 struct sk_buff *skb;
1448 int rc;
103b34cf 1449
e4878823 1450 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
103b34cf 1451
e4878823
WR		 1452 skb = pn533_alloc_skb(0);
1453 if (!skb)
103b34cf
SO		 1454 return;
1455
e4878823
WR		 1456 rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb,
1457 pn533_tm_get_data_complete, NULL);
103b34cf 1458
e4878823
WR		 1459 if (rc < 0)
1460 dev_kfree_skb(skb);
103b34cf
SO		 1461
1462 return;
1463}
1464
fc40a8c1 1465#define ATR_REQ_GB_OFFSET 17
b5193e5d 1466static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
fe7c5800 1467{
b5193e5d 1468 u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb;
fc40a8c1 1469 size_t gb_len;
103b34cf 1470 int rc;
ad3823ce
SO		 1471
1472 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1473
b5193e5d 1474 if (resp->len < ATR_REQ_GB_OFFSET + 1)
fc40a8c1
SO		 1475 return -EINVAL;
1476
b5193e5d
WR		 1477 mode = resp->data[0];
1478 cmd = &resp->data[1];
ad3823ce 1479
b5193e5d
WR		 1480 nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n",
1481 mode, resp->len);
ad3823ce 1482
b5193e5d
WR		 1483 if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) ==
1484 PN533_INIT_TARGET_RESP_ACTIVE)
fc40a8c1
SO		 1485 comm_mode = NFC_COMM_ACTIVE;
1486
b5193e5d 1487 if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */
fc40a8c1
SO		 1488 return -EOPNOTSUPP;
1489
b5193e5d
WR		 1490 gb = cmd + ATR_REQ_GB_OFFSET;
1491 gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1);
fc40a8c1 1492
103b34cf
SO		 1493 rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK,
1494 comm_mode, gb, gb_len);
1495 if (rc < 0) {
1496 nfc_dev_err(&dev->interface->dev,
1497 "Error when signaling target activation");
1498 return rc;
1499 }
1500
51ad304c 1501 dev->tgt_mode = 1;
103b34cf
SO		 1502 queue_work(dev->wq, &dev->tg_work);
1503
1504 return 0;
fe7c5800
SO		 1505}
1506
6fbbdc16 1507static void pn533_listen_mode_timer(unsigned long data)
ad3823ce 1508{
37cf4fc6 1509 struct pn533 *dev = (struct pn533 *)data;
6fbbdc16
SO		 1510
1511 nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout");
1512
1513 /* An ack will cancel the last issued command (poll) */
1514 pn533_send_ack(dev, GFP_ATOMIC);
1515
1516 dev->cancel_listen = 1;
1517
6fbbdc16
SO		 1518 pn533_poll_next_mod(dev);
1519
1520 queue_work(dev->wq, &dev->poll_work);
1521}
1522
1523static int pn533_poll_complete(struct pn533 *dev, void *arg,
b5193e5d 1524 struct sk_buff *resp)
6fbbdc16
SO		 1525{
1526 struct pn533_poll_modulations *cur_mod;
ad3823ce
SO		 1527 int rc;
1528
6fbbdc16 1529 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
ad3823ce 1530
b5193e5d
WR		 1531 if (IS_ERR(resp)) {
1532 rc = PTR_ERR(resp);
1533
1534 nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d",
1535 __func__, rc);
1536
1537 if (rc == -ENOENT) {
1538 if (dev->poll_mod_count != 0)
1539 return rc;
1540 else
1541 goto stop_poll;
1542 } else if (rc < 0) {
1543 nfc_dev_err(&dev->interface->dev,
1544 "Error %d when running poll", rc);
1545 goto stop_poll;
1546 }
6fbbdc16 1547 }
ad3823ce 1548
6fbbdc16
SO		 1549 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1550
b5193e5d 1551 if (cur_mod->len == 0) { /* Target mode */
6fbbdc16 1552 del_timer(&dev->listen_timer);
b5193e5d
WR		 1553 rc = pn533_init_target_complete(dev, resp);
1554 goto done;
6fbbdc16
SO		 1555 }
1556
b5193e5d
WR		 1557 /* Initiator mode */
1558 rc = pn533_start_poll_complete(dev, resp);
1559 if (!rc)
1560 goto done;
6fbbdc16 1561
b5193e5d 1562 pn533_poll_next_mod(dev);
6fbbdc16
SO		 1563 queue_work(dev->wq, &dev->poll_work);
1564
b5193e5d
WR		 1565done:
1566 dev_kfree_skb(resp);
1567 return rc;
6fbbdc16
SO		 1568
1569stop_poll:
b5193e5d
WR		 1570 nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped");
1571
6fbbdc16
SO		 1572 pn533_poll_reset_mod_list(dev);
1573 dev->poll_protocols = 0;
b5193e5d 1574 return rc;
ad3823ce
SO		 1575}
1576
b5193e5d
WR		 1577static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533_poll_modulations
1578 *mod)
c46ee386 1579{
b5193e5d 1580 struct sk_buff *skb;
c46ee386 1581
b5193e5d
WR		 1582 skb = pn533_alloc_skb(mod->len);
1583 if (!skb)
1584 return NULL;
c46ee386 1585
b5193e5d 1586 memcpy(skb_put(skb, mod->len), &mod->data, mod->len);
c46ee386 1587
b5193e5d 1588 return skb;
6fbbdc16 1589}
c46ee386 1590
6fbbdc16
SO		 1591static int pn533_send_poll_frame(struct pn533 *dev)
1592{
b5193e5d
WR		 1593 struct pn533_poll_modulations *mod;
1594 struct sk_buff *skb;
6fbbdc16 1595 int rc;
b5193e5d 1596 u8 cmd_code;
c46ee386 1597
b5193e5d 1598 mod = dev->poll_mod_active[dev->poll_mod_curr];
c46ee386 1599
b5193e5d
WR		 1600 nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n",
1601 __func__, mod->len);
c46ee386 1602
b5193e5d
WR		 1603 if (mod->len == 0) { /* Listen mode */
1604 cmd_code = PN533_CMD_TG_INIT_AS_TARGET;
1605 skb = pn533_alloc_poll_tg_frame(dev->gb, dev->gb_len);
1606 } else { /* Polling mode */
1607 cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET;
1608 skb = pn533_alloc_poll_in_frame(mod);
1609 }
1610
1611 if (!skb) {
1612 nfc_dev_err(&dev->interface->dev, "Failed to allocate skb.");
1613 return -ENOMEM;
1614 }
1615
1616 rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete,
1617 NULL);
1618 if (rc < 0) {
1619 dev_kfree_skb(skb);
6fbbdc16 1620 nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc);
b5193e5d 1621 }
c46ee386 1622
6fbbdc16
SO		 1623 return rc;
1624}
1625
1626static void pn533_wq_poll(struct work_struct *work)
1627{
1628 struct pn533 *dev = container_of(work, struct pn533, poll_work);
1629 struct pn533_poll_modulations *cur_mod;
1630 int rc;
1631
1632 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1633
1634 nfc_dev_dbg(&dev->interface->dev,
1635 "%s cancel_listen %d modulation len %d",
1636 __func__, dev->cancel_listen, cur_mod->len);
1637
1638 if (dev->cancel_listen == 1) {
1639 dev->cancel_listen = 0;
1640 usb_kill_urb(dev->in_urb);
c46ee386
AAJ		 1641 }
1642
6fbbdc16
SO		 1643 rc = pn533_send_poll_frame(dev);
1644 if (rc)
1645 return;
c46ee386 1646
6fbbdc16
SO		 1647 if (cur_mod->len == 0 && dev->poll_mod_count > 1)
1648 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
c46ee386 1649
6fbbdc16 1650 return;
c46ee386
AAJ		 1651}
1652
fe7c5800
SO		 1653static int pn533_start_poll(struct nfc_dev *nfc_dev,
1654 u32 im_protocols, u32 tm_protocols)
1655{
1656 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1657
1658 nfc_dev_dbg(&dev->interface->dev,
1659 "%s: im protocols 0x%x tm protocols 0x%x",
1660 __func__, im_protocols, tm_protocols);
1661
1662 if (dev->tgt_active_prot) {
1663 nfc_dev_err(&dev->interface->dev,
1664 "Cannot poll with a target already activated");
1665 return -EBUSY;
1666 }
1667
51ad304c
SO		 1668 if (dev->tgt_mode) {
1669 nfc_dev_err(&dev->interface->dev,
1670 "Cannot poll while already being activated");
1671 return -EBUSY;
1672 }
1673
6fbbdc16
SO		 1674 if (tm_protocols) {
1675 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1676 if (dev->gb == NULL)
1677 tm_protocols = 0;
1678 }
ad3823ce 1679
6fbbdc16
SO		 1680 dev->poll_mod_curr = 0;
1681 pn533_poll_create_mod_list(dev, im_protocols, tm_protocols);
1682 dev->poll_protocols = im_protocols;
1683 dev->listen_protocols = tm_protocols;
ad3823ce 1684
6fbbdc16 1685 return pn533_send_poll_frame(dev);
fe7c5800
SO		 1686}
1687
c46ee386
AAJ		 1688static void pn533_stop_poll(struct nfc_dev *nfc_dev)
1689{
1690 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1691
1692 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1693
6fbbdc16
SO		 1694 del_timer(&dev->listen_timer);
1695
c46ee386 1696 if (!dev->poll_mod_count) {
6ca55372
WR		 1697 nfc_dev_dbg(&dev->interface->dev,
1698 "Polling operation was not running");
c46ee386
AAJ		 1699 return;
1700 }
1701
1702 /* An ack will cancel the last issued command (poll) */
1703 pn533_send_ack(dev, GFP_KERNEL);
1704
1705 /* prevent pn533_start_poll_complete to issue a new poll meanwhile */
1706 usb_kill_urb(dev->in_urb);
7c2a04a9
SO		 1707
1708 pn533_poll_reset_mod_list(dev);
c46ee386
AAJ		 1709}
1710
1711static int pn533_activate_target_nfcdep(struct pn533 *dev)
1712{
cb950d93 1713 struct pn533_cmd_activate_response *rsp;
541d920b 1714 u16 gt_len;
c46ee386
AAJ		 1715 int rc;
1716
cb950d93
WR		 1717 struct sk_buff *skb;
1718 struct sk_buff *resp;
c46ee386 1719
cb950d93 1720 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
c46ee386 1721
cb950d93
WR		 1722 skb = pn533_alloc_skb(sizeof(u8) * 2); /*TG + Next*/
1723 if (!skb)
1724 return -ENOMEM;
c46ee386 1725
cb950d93
WR		 1726 *skb_put(skb, sizeof(u8)) = 1; /* TG */
1727 *skb_put(skb, sizeof(u8)) = 0; /* Next */
c46ee386 1728
cb950d93
WR		 1729 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb);
1730 if (IS_ERR(resp))
1731 return PTR_ERR(resp);
c46ee386 1732
37cf4fc6 1733 rsp = (struct pn533_cmd_activate_response *)resp->data;
cb950d93 1734 rc = rsp->status & PN533_CMD_RET_MASK;
c46ee386 1735 if (rc != PN533_CMD_RET_SUCCESS)
cb950d93 1736 dev_kfree_skb(resp);
c46ee386
AAJ		 1737 return -EIO;
1738
541d920b 1739 /* ATR_RES general bytes are located at offset 16 */
cb950d93
WR		 1740 gt_len = resp->len - 16;
1741 rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len);
541d920b 1742
cb950d93 1743 dev_kfree_skb(resp);
541d920b 1744 return rc;
c46ee386
AAJ		 1745}
1746
90099433
EL		 1747static int pn533_activate_target(struct nfc_dev *nfc_dev,
1748 struct nfc_target *target, u32 protocol)
c46ee386
AAJ		 1749{
1750 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1751 int rc;
1752
1753 nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__,
5d467742 1754 protocol);
c46ee386
AAJ		 1755
1756 if (dev->poll_mod_count) {
6ca55372
WR		 1757 nfc_dev_err(&dev->interface->dev,
1758 "Cannot activate while polling");
c46ee386
AAJ		 1759 return -EBUSY;
1760 }
1761
1762 if (dev->tgt_active_prot) {
6ca55372
WR		 1763 nfc_dev_err(&dev->interface->dev,
1764 "There is already an active target");
c46ee386
AAJ		 1765 return -EBUSY;
1766 }
1767
1768 if (!dev->tgt_available_prots) {
6ca55372
WR		 1769 nfc_dev_err(&dev->interface->dev,
1770 "There is no available target to activate");
c46ee386
AAJ		 1771 return -EINVAL;
1772 }
1773
1774 if (!(dev->tgt_available_prots & (1 << protocol))) {
6ca55372
WR		 1775 nfc_dev_err(&dev->interface->dev,
1776 "Target doesn't support requested proto %u",
1777 protocol);
c46ee386
AAJ		 1778 return -EINVAL;
1779 }
1780
1781 if (protocol == NFC_PROTO_NFC_DEP) {
1782 rc = pn533_activate_target_nfcdep(dev);
1783 if (rc) {
6ca55372
WR		 1784 nfc_dev_err(&dev->interface->dev,
1785 "Activating target with DEP failed %d", rc);
c46ee386
AAJ		 1786 return rc;
1787 }
1788 }
1789
1790 dev->tgt_active_prot = protocol;
1791 dev->tgt_available_prots = 0;
1792
1793 return 0;
1794}
1795
90099433
EL		 1796static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
1797 struct nfc_target *target)
c46ee386
AAJ		 1798{
1799 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
cb950d93
WR		 1800
1801 struct sk_buff *skb;
1802 struct sk_buff *resp;
1803
c46ee386
AAJ		 1804 int rc;
1805
1806 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1807
1808 if (!dev->tgt_active_prot) {
1809 nfc_dev_err(&dev->interface->dev, "There is no active target");
1810 return;
1811 }
1812
1813 dev->tgt_active_prot = 0;
6ff73fd2
SO		 1814 skb_queue_purge(&dev->resp_q);
1815
cb950d93
WR		 1816 skb = pn533_alloc_skb(sizeof(u8));
1817 if (!skb)
1818 return;
c46ee386 1819
cb950d93 1820 *skb_put(skb, 1) = 1; /* TG*/
c46ee386 1821
cb950d93
WR		 1822 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb);
1823 if (IS_ERR(resp))
c46ee386 1824 return;
c46ee386 1825
cb950d93 1826 rc = resp->data[0] & PN533_CMD_RET_MASK;
c46ee386 1827 if (rc != PN533_CMD_RET_SUCCESS)
6ca55372
WR		 1828 nfc_dev_err(&dev->interface->dev,
1829 "Error 0x%x when releasing the target", rc);
c46ee386 1830
cb950d93 1831 dev_kfree_skb(resp);
c46ee386
AAJ		 1832 return;
1833}
1834
361f3cb7
SO		 1835
1836static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
13003649 1837 struct sk_buff *resp)
361f3cb7 1838{
13003649 1839 struct pn533_cmd_jump_dep_response *rsp;
361f3cb7
SO		 1840 u8 target_gt_len;
1841 int rc;
13003649 1842 u8 active = *(u8 *)arg;
70418e6e
WR		 1843
1844 kfree(arg);
361f3cb7 1845
13003649
WR		 1846 if (IS_ERR(resp))
1847 return PTR_ERR(resp);
361f3cb7
SO		 1848
1849 if (dev->tgt_available_prots &&
1850 !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) {
1851 nfc_dev_err(&dev->interface->dev,
5d467742 1852 "The target does not support DEP");
13003649
WR		 1853 rc = -EINVAL;
1854 goto error;
361f3cb7
SO		 1855 }
1856
13003649
WR		 1857 rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
1858
1859 rc = rsp->status & PN533_CMD_RET_MASK;
361f3cb7
SO		 1860 if (rc != PN533_CMD_RET_SUCCESS) {
1861 nfc_dev_err(&dev->interface->dev,
5d467742 1862 "Bringing DEP link up failed %d", rc);
13003649 1863 goto error;
361f3cb7
SO		 1864 }
1865
1866 if (!dev->tgt_available_prots) {
13003649
WR		 1867 struct nfc_target nfc_target;
1868
361f3cb7
SO		 1869 nfc_dev_dbg(&dev->interface->dev, "Creating new target");
1870
1871 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
2fbabfa4 1872 nfc_target.nfcid1_len = 10;
13003649 1873 memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
361f3cb7
SO		 1874 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1875 if (rc)
13003649 1876 goto error;
361f3cb7
SO		 1877
1878 dev->tgt_available_prots = 0;
1879 }
1880
1881 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1882
1883 /* ATR_RES general bytes are located at offset 17 */
13003649 1884 target_gt_len = resp->len - 17;
361f3cb7 1885 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
13003649 1886 rsp->gt, target_gt_len);
361f3cb7
SO		 1887 if (rc == 0)
1888 rc = nfc_dep_link_is_up(dev->nfc_dev,
13003649
WR		 1889 dev->nfc_dev->targets[0].idx,
1890 !active, NFC_RF_INITIATOR);
361f3cb7 1891
13003649
WR		 1892error:
1893 dev_kfree_skb(resp);
1894 return rc;
361f3cb7
SO		 1895}
1896
41a8ec49
SO		 1897static int pn533_mod_to_baud(struct pn533 *dev)
1898{
1899 switch (dev->poll_mod_curr) {
1900 case PN533_POLL_MOD_106KBPS_A:
1901 return 0;
1902 case PN533_POLL_MOD_212KBPS_FELICA:
1903 return 1;
1904 case PN533_POLL_MOD_424KBPS_FELICA:
1905 return 2;
1906 default:
1907 return -EINVAL;
1908 }
1909}
1910
d7f3345d 1911#define PASSIVE_DATA_LEN 5
90099433 1912static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
37cf4fc6 1913 u8 comm_mode, u8 *gb, size_t gb_len)
361f3cb7
SO		 1914{
1915 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
13003649
WR		 1916 struct sk_buff *skb;
1917 int rc, baud, skb_len;
1918 u8 *next, *arg;
1919
d7f3345d 1920 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
361f3cb7
SO		 1921
1922 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1923
361f3cb7
SO		 1924 if (dev->poll_mod_count) {
1925 nfc_dev_err(&dev->interface->dev,
5d467742 1926 "Cannot bring the DEP link up while polling");
361f3cb7
SO		 1927 return -EBUSY;
1928 }
1929
1930 if (dev->tgt_active_prot) {
1931 nfc_dev_err(&dev->interface->dev,
5d467742 1932 "There is already an active target");
361f3cb7
SO		 1933 return -EBUSY;
1934 }
1935
41a8ec49
SO		 1936 baud = pn533_mod_to_baud(dev);
1937 if (baud < 0) {
1938 nfc_dev_err(&dev->interface->dev,
1939 "Invalid curr modulation %d", dev->poll_mod_curr);
1940 return baud;
1941 }
1942
13003649 1943 skb_len = 3 + gb_len; /* ActPass + BR + Next */
d7f3345d 1944 if (comm_mode == NFC_COMM_PASSIVE)
13003649 1945 skb_len += PASSIVE_DATA_LEN;
d7f3345d 1946
13003649
WR		 1947 skb = pn533_alloc_skb(skb_len);
1948 if (!skb)
361f3cb7
SO		 1949 return -ENOMEM;
1950
13003649
WR		 1951 *skb_put(skb, 1) = !comm_mode; /* ActPass */
1952 *skb_put(skb, 1) = baud; /* Baud rate */
1953
1954 next = skb_put(skb, 1); /* Next */
1955 *next = 0;
361f3cb7 1956
13003649
WR		 1957 if (comm_mode == NFC_COMM_PASSIVE && baud > 0) {
1958 memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data,
1959 PASSIVE_DATA_LEN);
1960 *next |= 1;
d7f3345d
SO		 1961 }
1962
47807d3d 1963 if (gb != NULL && gb_len > 0) {
13003649
WR		 1964 memcpy(skb_put(skb, gb_len), gb, gb_len);
1965 *next |= 4; /* We have some Gi */
361f3cb7 1966 } else {
13003649 1967 *next = 0;
361f3cb7
SO		 1968 }
1969
13003649
WR		 1970 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
1971 if (!arg) {
1972 dev_kfree_skb(skb);
1973 return -ENOMEM;
1974 }
361f3cb7 1975
13003649 1976 *arg = !comm_mode;
361f3cb7 1977
13003649
WR		 1978 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb,
1979 pn533_in_dep_link_up_complete, arg);
1980
1981 if (rc < 0) {
1982 dev_kfree_skb(skb);
1983 kfree(arg);
1984 }
361f3cb7
SO		 1985
1986 return rc;
1987}
1988
1989static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
1990{
6fbbdc16
SO		 1991 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1992
1993 pn533_poll_reset_mod_list(dev);
1994
51ad304c
SO		 1995 if (dev->tgt_mode || dev->tgt_active_prot) {
1996 pn533_send_ack(dev, GFP_KERNEL);
1997 usb_kill_urb(dev->in_urb);
1998 }
1999
2000 dev->tgt_active_prot = 0;
2001 dev->tgt_mode = 0;
2002
2003 skb_queue_purge(&dev->resp_q);
361f3cb7
SO		 2004
2005 return 0;
2006}
2007
c46ee386 2008struct pn533_data_exchange_arg {
c46ee386
AAJ		 2009 data_exchange_cb_t cb;
2010 void *cb_context;
2011};
2012
6ff73fd2
SO		 2013static struct sk_buff *pn533_build_response(struct pn533 *dev)
2014{
2015 struct sk_buff *skb, *tmp, *t;
2016 unsigned int skb_len = 0, tmp_len = 0;
2017
2018 nfc_dev_dbg(&dev->interface->dev, "%s\n", __func__);
2019
2020 if (skb_queue_empty(&dev->resp_q))
2021 return NULL;
2022
2023 if (skb_queue_len(&dev->resp_q) == 1) {
2024 skb = skb_dequeue(&dev->resp_q);
2025 goto out;
2026 }
2027
2028 skb_queue_walk_safe(&dev->resp_q, tmp, t)
2029 skb_len += tmp->len;
2030
2031 nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n",
2032 __func__, skb_len);
2033
2034 skb = alloc_skb(skb_len, GFP_KERNEL);
2035 if (skb == NULL)
2036 goto out;
2037
2038 skb_put(skb, skb_len);
2039
2040 skb_queue_walk_safe(&dev->resp_q, tmp, t) {
2041 memcpy(skb->data + tmp_len, tmp->data, tmp->len);
2042 tmp_len += tmp->len;
2043 }
2044
2045out:
2046 skb_queue_purge(&dev->resp_q);
2047
2048 return skb;
2049}
2050
c46ee386 2051static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
b1e666f5 2052 struct sk_buff *resp)
c46ee386
AAJ		 2053{
2054 struct pn533_data_exchange_arg *arg = _arg;
b1e666f5
WR		 2055 struct sk_buff *skb;
2056 int rc = 0;
2057 u8 status, ret, mi;
c46ee386
AAJ		 2058
2059 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2060
b1e666f5
WR		 2061 if (IS_ERR(resp)) {
2062 rc = PTR_ERR(resp);
2063 goto _error;
c46ee386
AAJ		 2064 }
2065
b1e666f5
WR		 2066 status = resp->data[0];
2067 ret = status & PN533_CMD_RET_MASK;
2068 mi = status & PN533_CMD_MI_MASK;
2069
2070 skb_pull(resp, sizeof(status));
c46ee386 2071
b1e666f5
WR		 2072 if (ret != PN533_CMD_RET_SUCCESS) {
2073 nfc_dev_err(&dev->interface->dev,
2074 "PN533 reported error %d when exchanging data",
2075 ret);
2076 rc = -EIO;
c46ee386
AAJ		 2077 goto error;
2078 }
2079
b1e666f5 2080 skb_queue_tail(&dev->resp_q, resp);
6ff73fd2 2081
b1e666f5
WR		 2082 if (mi) {
2083 dev->cmd_complete_mi_arg = arg;
6ff73fd2
SO		 2084 queue_work(dev->wq, &dev->mi_work);
2085 return -EINPROGRESS;
c46ee386
AAJ		 2086 }
2087
6ff73fd2 2088 skb = pn533_build_response(dev);
b1e666f5 2089 if (!skb)
6ff73fd2 2090 goto error;
c46ee386 2091
6ff73fd2 2092 arg->cb(arg->cb_context, skb, 0);
c46ee386
AAJ		 2093 kfree(arg);
2094 return 0;
2095
2096error:
b1e666f5
WR		 2097 dev_kfree_skb(resp);
2098_error:
6ff73fd2 2099 skb_queue_purge(&dev->resp_q);
b1e666f5 2100 arg->cb(arg->cb_context, NULL, rc);
c46ee386 2101 kfree(arg);
b1e666f5 2102 return rc;
c46ee386
AAJ		 2103}
2104
be9ae4ce
SO		 2105static int pn533_transceive(struct nfc_dev *nfc_dev,
2106 struct nfc_target *target, struct sk_buff *skb,
2107 data_exchange_cb_t cb, void *cb_context)
c46ee386
AAJ		 2108{
2109 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
b1e666f5 2110 struct pn533_data_exchange_arg *arg = NULL;
c46ee386
AAJ		 2111 int rc;
2112
2113 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2114
b1e666f5
WR		 2115 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2116 /* TODO: Implement support to multi-part data exchange */
2117 nfc_dev_err(&dev->interface->dev,
2118 "Data length greater than the max allowed: %d",
2119 PN533_CMD_DATAEXCH_DATA_MAXLEN);
2120 rc = -ENOSYS;
2121 goto error;
2122 }
2123
c46ee386 2124 if (!dev->tgt_active_prot) {
6ca55372
WR		 2125 nfc_dev_err(&dev->interface->dev,
2126 "Can't exchange data if there is no active target");
c46ee386
AAJ		 2127 rc = -EINVAL;
2128 goto error;
2129 }
2130
b1e666f5 2131 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
c46ee386
AAJ		 2132 if (!arg) {
2133 rc = -ENOMEM;
b1e666f5 2134 goto error;
c46ee386
AAJ		 2135 }
2136
c46ee386
AAJ		 2137 arg->cb = cb;
2138 arg->cb_context = cb_context;
2139
b1e666f5
WR		 2140 switch (dev->device_type) {
2141 case PN533_DEVICE_PASORI:
2142 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2143 rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU,
2144 skb,
2145 pn533_data_exchange_complete,
2146 arg);
2147
2148 break;
2149 }
2150 default:
2151 *skb_push(skb, sizeof(u8)) = 1; /*TG*/
2152
2153 rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE,
2154 skb, pn533_data_exchange_complete,
2155 arg);
2156
2157 break;
c46ee386
AAJ		 2158 }
2159
b1e666f5
WR		 2160 if (rc < 0) /* rc from send_async */
2161 goto error;
2162
c46ee386
AAJ		 2163 return 0;
2164
c46ee386 2165error:
b1e666f5
WR		 2166 kfree(arg);
2167 dev_kfree_skb(skb);
c46ee386
AAJ		 2168 return rc;
2169}
2170
dadb06f2 2171static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
e4878823 2172 struct sk_buff *resp)
dadb06f2 2173{
e4878823 2174 u8 status;
5b412fd1 2175
dadb06f2
SO		 2176 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2177
e4878823
WR		 2178 if (IS_ERR(resp))
2179 return PTR_ERR(resp);
5b412fd1 2180
e4878823 2181 status = resp->data[0];
dadb06f2 2182
e4878823 2183 dev_kfree_skb(resp);
dadb06f2 2184
e4878823 2185 if (status != 0) {
dadb06f2
SO		 2186 nfc_tm_deactivated(dev->nfc_dev);
2187
51ad304c
SO		 2188 dev->tgt_mode = 0;
2189
dadb06f2
SO		 2190 return 0;
2191 }
2192
2193 queue_work(dev->wq, &dev->tg_work);
2194
2195 return 0;
2196}
2197
2198static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
2199{
2200 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
dadb06f2
SO		 2201 int rc;
2202
2203 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2204
e4878823 2205 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
dadb06f2 2206 nfc_dev_err(&dev->interface->dev,
e4878823
WR		 2207 "Data length greater than the max allowed: %d",
2208 PN533_CMD_DATAEXCH_DATA_MAXLEN);
2209 return -ENOSYS;
dadb06f2
SO		 2210 }
2211
e4878823
WR		 2212 rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,
2213 pn533_tm_send_complete, NULL);
2214 if (rc < 0)
2215 dev_kfree_skb(skb);
dadb06f2
SO		 2216
2217 return rc;
2218}
2219
6ff73fd2
SO		 2220static void pn533_wq_mi_recv(struct work_struct *work)
2221{
2222 struct pn533 *dev = container_of(work, struct pn533, mi_work);
b1e666f5
WR		 2223
2224 struct sk_buff *skb;
6ff73fd2
SO		 2225 int rc;
2226
2227 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2228
b1e666f5
WR		 2229 skb = pn533_alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN);
2230 if (!skb)
2231 goto error;
6ff73fd2 2232
b1e666f5
WR		 2233 switch (dev->device_type) {
2234 case PN533_DEVICE_PASORI:
2235 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2236 rc = pn533_send_cmd_direct_async(dev,
2237 PN533_CMD_IN_COMM_THRU,
2238 skb,
2239 pn533_data_exchange_complete,
2240 dev->cmd_complete_mi_arg);
6ff73fd2 2241
b1e666f5
WR		 2242 break;
2243 }
2244 default:
2245 *skb_put(skb, sizeof(u8)) = 1; /*TG*/
6ff73fd2 2246
b1e666f5
WR		 2247 rc = pn533_send_cmd_direct_async(dev,
2248 PN533_CMD_IN_DATA_EXCHANGE,
2249 skb,
2250 pn533_data_exchange_complete,
2251 dev->cmd_complete_mi_arg);
b1bb290a 2252
b1e666f5 2253 break;
6ff73fd2
SO		 2254 }
2255
b1e666f5 2256 if (rc == 0) /* success */
6ff73fd2
SO		 2257 return;
2258
b1e666f5
WR		 2259 nfc_dev_err(&dev->interface->dev,
2260 "Error %d when trying to perform data_exchange", rc);
6ff73fd2 2261
b1e666f5
WR		 2262 dev_kfree_skb(skb);
2263 kfree(dev->cmd_complete_arg);
6ff73fd2 2264
b1e666f5 2265error:
6ff73fd2 2266 pn533_send_ack(dev, GFP_KERNEL);
5d50b364 2267 queue_work(dev->wq, &dev->cmd_work);
6ff73fd2
SO		 2268}
2269
c46ee386
AAJ		 2270static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
2271 u8 cfgdata_len)
2272{
cb950d93
WR		 2273 struct sk_buff *skb;
2274 struct sk_buff *resp;
2275
2276 int skb_len;
c46ee386
AAJ		 2277
2278 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2279
cb950d93 2280 skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */
c46ee386 2281
cb950d93
WR		 2282 skb = pn533_alloc_skb(skb_len);
2283 if (!skb)
2284 return -ENOMEM;
c46ee386 2285
cb950d93
WR		 2286 *skb_put(skb, sizeof(cfgitem)) = cfgitem;
2287 memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len);
c46ee386 2288
cb950d93
WR		 2289 resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb);
2290 if (IS_ERR(resp))
2291 return PTR_ERR(resp);
c46ee386 2292
cb950d93
WR		 2293 dev_kfree_skb(resp);
2294 return 0;
2295}
2296
2297static int pn533_get_firmware_version(struct pn533 *dev,
2298 struct pn533_fw_version *fv)
2299{
2300 struct sk_buff *skb;
2301 struct sk_buff *resp;
2302
2303 skb = pn533_alloc_skb(0);
2304 if (!skb)
2305 return -ENOMEM;
2306
2307 resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb);
2308 if (IS_ERR(resp))
2309 return PTR_ERR(resp);
2310
2311 fv->ic = resp->data[0];
2312 fv->ver = resp->data[1];
2313 fv->rev = resp->data[2];
2314 fv->support = resp->data[3];
2315
2316 dev_kfree_skb(resp);
2317 return 0;
c46ee386
AAJ		 2318}
2319
5c7b0531
SO		 2320static int pn533_fw_reset(struct pn533 *dev)
2321{
cb950d93
WR		 2322 struct sk_buff *skb;
2323 struct sk_buff *resp;
5c7b0531
SO		 2324
2325 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2326
cb950d93
WR		 2327 skb = pn533_alloc_skb(sizeof(u8));
2328 if (!skb)
2329 return -ENOMEM;
5c7b0531 2330
cb950d93 2331 *skb_put(skb, sizeof(u8)) = 0x1;
5c7b0531 2332
cb950d93
WR		 2333 resp = pn533_send_cmd_sync(dev, 0x18, skb);
2334 if (IS_ERR(resp))
2335 return PTR_ERR(resp);
5c7b0531 2336
cb950d93 2337 dev_kfree_skb(resp);
5c7b0531 2338
94c5c156 2339 return 0;
5c7b0531
SO		 2340}
2341
2342static struct nfc_ops pn533_nfc_ops = {
8b3fe7b5
IE		 2343 .dev_up = NULL,
2344 .dev_down = NULL,
361f3cb7
SO		 2345 .dep_link_up = pn533_dep_link_up,
2346 .dep_link_down = pn533_dep_link_down,
c46ee386
AAJ		 2347 .start_poll = pn533_start_poll,
2348 .stop_poll = pn533_stop_poll,
2349 .activate_target = pn533_activate_target,
2350 .deactivate_target = pn533_deactivate_target,
be9ae4ce 2351 .im_transceive = pn533_transceive,
dadb06f2 2352 .tm_send = pn533_tm_send,
c46ee386
AAJ		 2353};
2354
5c7b0531
SO		 2355static int pn533_setup(struct pn533 *dev)
2356{
2357 struct pn533_config_max_retries max_retries;
2358 struct pn533_config_timing timing;
2359 u8 pasori_cfg[3] = {0x08, 0x01, 0x08};
2360 int rc;
2361
2362 switch (dev->device_type) {
2363 case PN533_DEVICE_STD:
2364 max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS;
2365 max_retries.mx_rty_psl = 2;
2366 max_retries.mx_rty_passive_act =
2367 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2368
2369 timing.rfu = PN533_CONFIG_TIMING_102;
2370 timing.atr_res_timeout = PN533_CONFIG_TIMING_204;
2371 timing.dep_timeout = PN533_CONFIG_TIMING_409;
2372
2373 break;
2374
2375 case PN533_DEVICE_PASORI:
2376 max_retries.mx_rty_atr = 0x2;
2377 max_retries.mx_rty_psl = 0x1;
2378 max_retries.mx_rty_passive_act =
2379 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2380
2381 timing.rfu = PN533_CONFIG_TIMING_102;
2382 timing.atr_res_timeout = PN533_CONFIG_TIMING_102;
2383 timing.dep_timeout = PN533_CONFIG_TIMING_204;
2384
2385 break;
2386
2387 default:
2388 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2389 dev->device_type);
2390 return -EINVAL;
2391 }
2392
2393 rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES,
2394 (u8 *)&max_retries, sizeof(max_retries));
2395 if (rc) {
2396 nfc_dev_err(&dev->interface->dev,
2397 "Error on setting MAX_RETRIES config");
2398 return rc;
2399 }
2400
2401
2402 rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING,
2403 (u8 *)&timing, sizeof(timing));
2404 if (rc) {
2405 nfc_dev_err(&dev->interface->dev,
2406 "Error on setting RF timings");
2407 return rc;
2408 }
2409
2410 switch (dev->device_type) {
2411 case PN533_DEVICE_STD:
2412 break;
2413
2414 case PN533_DEVICE_PASORI:
2415 pn533_fw_reset(dev);
2416
2417 rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
2418 pasori_cfg, 3);
2419 if (rc) {
2420 nfc_dev_err(&dev->interface->dev,
2421 "Error while settings PASORI config");
2422 return rc;
2423 }
2424
2425 pn533_fw_reset(dev);
2426
2427 break;
2428 }
2429
2430 return 0;
2431}
2432
c46ee386
AAJ		 2433static int pn533_probe(struct usb_interface *interface,
2434 const struct usb_device_id *id)
2435{
cb950d93 2436 struct pn533_fw_version fw_ver;
c46ee386
AAJ		 2437 struct pn533 *dev;
2438 struct usb_host_interface *iface_desc;
2439 struct usb_endpoint_descriptor *endpoint;
c46ee386
AAJ		 2440 int in_endpoint = 0;
2441 int out_endpoint = 0;
2442 int rc = -ENOMEM;
2443 int i;
2444 u32 protocols;
2445
2446 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2447 if (!dev)
2448 return -ENOMEM;
2449
2450 dev->udev = usb_get_dev(interface_to_usbdev(interface));
2451 dev->interface = interface;
0201ed03 2452 mutex_init(&dev->cmd_lock);
c46ee386
AAJ		 2453
2454 iface_desc = interface->cur_altsetting;
2455 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
2456 endpoint = &iface_desc->endpoint[i].desc;
2457
8d25ca79 2458 if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint))
c46ee386 2459 in_endpoint = endpoint->bEndpointAddress;
c46ee386 2460
8d25ca79 2461 if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint))
c46ee386 2462 out_endpoint = endpoint->bEndpointAddress;
c46ee386
AAJ		 2463 }
2464
2465 if (!in_endpoint || !out_endpoint) {
6ca55372
WR		 2466 nfc_dev_err(&interface->dev,
2467 "Could not find bulk-in or bulk-out endpoint");
c46ee386
AAJ		 2468 rc = -ENODEV;
2469 goto error;
2470 }
2471
c46ee386 2472 dev->in_urb = usb_alloc_urb(0, GFP_KERNEL);
82dec34d 2473 dev->out_frame = kmalloc(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
c46ee386
AAJ		 2474 dev->out_urb = usb_alloc_urb(0, GFP_KERNEL);
2475
89fb2025 2476 if (!dev->out_frame || !dev->in_urb || !dev->out_urb)
c46ee386
AAJ		 2477 goto error;
2478
2479 usb_fill_bulk_urb(dev->in_urb, dev->udev,
5d467742
WR		 2480 usb_rcvbulkpipe(dev->udev, in_endpoint),
2481 NULL, 0, NULL, dev);
c46ee386 2482 usb_fill_bulk_urb(dev->out_urb, dev->udev,
5d467742
WR		 2483 usb_sndbulkpipe(dev->udev, out_endpoint),
2484 NULL, 0, pn533_send_complete, dev);
c46ee386 2485
5d50b364
SO		 2486 INIT_WORK(&dev->cmd_work, pn533_wq_cmd);
2487 INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete);
6ff73fd2 2488 INIT_WORK(&dev->mi_work, pn533_wq_mi_recv);
103b34cf 2489 INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data);
6fbbdc16 2490 INIT_WORK(&dev->poll_work, pn533_wq_poll);
58637c9b 2491 dev->wq = alloc_ordered_workqueue("pn533", 0);
4849f85e
SO		 2492 if (dev->wq == NULL)
2493 goto error;
c46ee386 2494
6fbbdc16
SO		 2495 init_timer(&dev->listen_timer);
2496 dev->listen_timer.data = (unsigned long) dev;
2497 dev->listen_timer.function = pn533_listen_mode_timer;
2498
6ff73fd2
SO		 2499 skb_queue_head_init(&dev->resp_q);
2500
5d50b364
SO		 2501 INIT_LIST_HEAD(&dev->cmd_queue);
2502
c46ee386
AAJ		 2503 usb_set_intfdata(interface, dev);
2504
cb950d93
WR		 2505 memset(&fw_ver, 0, sizeof(fw_ver));
2506 rc = pn533_get_firmware_version(dev, &fw_ver);
2507 if (rc < 0)
4849f85e 2508 goto destroy_wq;
c46ee386 2509
cb950d93
WR		 2510 nfc_dev_info(&dev->interface->dev,
2511 "NXP PN533 firmware ver %d.%d now attached",
2512 fw_ver.ver, fw_ver.rev);
c46ee386 2513
5c7b0531
SO		 2514 dev->device_type = id->driver_info;
2515 switch (dev->device_type) {
2516 case PN533_DEVICE_STD:
2517 protocols = PN533_ALL_PROTOCOLS;
2518 break;
2519
2520 case PN533_DEVICE_PASORI:
2521 protocols = PN533_NO_TYPE_B_PROTOCOLS;
2522 break;
2523
2524 default:
2525 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2526 dev->device_type);
2527 rc = -EINVAL;
2528 goto destroy_wq;
2529 }
c46ee386 2530
e8753043 2531 dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
b1bb290a 2532 PN533_FRAME_HEADER_LEN +
e8753043 2533 PN533_CMD_DATAEXCH_HEAD_LEN,
b1bb290a 2534 PN533_FRAME_TAIL_LEN);
c46ee386 2535 if (!dev->nfc_dev)
4849f85e 2536 goto destroy_wq;
c46ee386
AAJ		 2537
2538 nfc_set_parent_dev(dev->nfc_dev, &interface->dev);
2539 nfc_set_drvdata(dev->nfc_dev, dev);
2540
2541 rc = nfc_register_device(dev->nfc_dev);
2542 if (rc)
2543 goto free_nfc_dev;
2544
5c7b0531
SO		 2545 rc = pn533_setup(dev);
2546 if (rc)
34a85bfc 2547 goto unregister_nfc_dev;
34a85bfc 2548
c46ee386
AAJ		 2549 return 0;
2550
9f2f8ba1
SO		 2551unregister_nfc_dev:
2552 nfc_unregister_device(dev->nfc_dev);
2553
c46ee386
AAJ		 2554free_nfc_dev:
2555 nfc_free_device(dev->nfc_dev);
9f2f8ba1 2556
4849f85e
SO		 2557destroy_wq:
2558 destroy_workqueue(dev->wq);
c46ee386 2559error:
c46ee386
AAJ		 2560 usb_free_urb(dev->in_urb);
2561 kfree(dev->out_frame);
2562 usb_free_urb(dev->out_urb);
2563 kfree(dev);
2564 return rc;
2565}
2566
2567static void pn533_disconnect(struct usb_interface *interface)
2568{
2569 struct pn533 *dev;
5d50b364 2570 struct pn533_cmd *cmd, *n;
c46ee386
AAJ		 2571
2572 dev = usb_get_intfdata(interface);
2573 usb_set_intfdata(interface, NULL);
2574
2575 nfc_unregister_device(dev->nfc_dev);
2576 nfc_free_device(dev->nfc_dev);
2577
2578 usb_kill_urb(dev->in_urb);
2579 usb_kill_urb(dev->out_urb);
2580
4849f85e 2581 destroy_workqueue(dev->wq);
c46ee386 2582
6ff73fd2
SO		 2583 skb_queue_purge(&dev->resp_q);
2584
6fbbdc16
SO		 2585 del_timer(&dev->listen_timer);
2586
5d50b364
SO		 2587 list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) {
2588 list_del(&cmd->queue);
2589 kfree(cmd);
2590 }
2591
c46ee386
AAJ		 2592 usb_free_urb(dev->in_urb);
2593 kfree(dev->out_frame);
2594 usb_free_urb(dev->out_urb);
2595 kfree(dev);
2596
276556db 2597 nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected");
c46ee386
AAJ		 2598}
2599
2600static struct usb_driver pn533_driver = {
2601 .name = "pn533",
2602 .probe = pn533_probe,
2603 .disconnect = pn533_disconnect,
2604 .id_table = pn533_table,
2605};
2606
fe748483 2607module_usb_driver(pn533_driver);
c46ee386
AAJ		 2608
2609MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>,"
2610 " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
2611MODULE_DESCRIPTION("PN533 usb driver ver " VERSION);
2612MODULE_VERSION(VERSION);
2613MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)