projects / linux-2.6-block.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
NFC: pn533: Remove unused dev->wq_in_frame
[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)
5b5a4437
WR		 97#define PN533_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2),
98 Postamble (1) */
c46ee386
AAJ		 99#define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen])
100#define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1])
101
102/* start of frame */
103#define PN533_SOF 0x00FF
104
105/* frame identifier: in/out/error */
106#define PN533_FRAME_IDENTIFIER(f) (f->data[0])
107#define PN533_DIR_OUT 0xD4
108#define PN533_DIR_IN 0xD5
109
110/* PN533 Commands */
111#define PN533_FRAME_CMD(f) (f->data[1])
c46ee386
AAJ		 112
113#define PN533_CMD_GET_FIRMWARE_VERSION 0x02
114#define PN533_CMD_RF_CONFIGURATION 0x32
115#define PN533_CMD_IN_DATA_EXCHANGE 0x40
5c7b0531 116#define PN533_CMD_IN_COMM_THRU 0x42
c46ee386
AAJ		 117#define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A
118#define PN533_CMD_IN_ATR 0x50
119#define PN533_CMD_IN_RELEASE 0x52
361f3cb7 120#define PN533_CMD_IN_JUMP_FOR_DEP 0x56
c46ee386 121
ad3823ce 122#define PN533_CMD_TG_INIT_AS_TARGET 0x8c
103b34cf 123#define PN533_CMD_TG_GET_DATA 0x86
dadb06f2 124#define PN533_CMD_TG_SET_DATA 0x8e
aada17ac 125#define PN533_CMD_UNDEF 0xff
ad3823ce 126
c46ee386
AAJ		 127#define PN533_CMD_RESPONSE(cmd) (cmd + 1)
128
129/* PN533 Return codes */
130#define PN533_CMD_RET_MASK 0x3F
131#define PN533_CMD_MI_MASK 0x40
132#define PN533_CMD_RET_SUCCESS 0x00
133
134struct pn533;
135
0c33d262 136typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg, int status);
c46ee386 137
aada17ac
WR		 138typedef int (*pn533_send_async_complete_t) (struct pn533 *dev, void *arg,
139 struct sk_buff *resp);
140
c46ee386
AAJ		 141/* structs for pn533 commands */
142
143/* PN533_CMD_GET_FIRMWARE_VERSION */
144struct pn533_fw_version {
145 u8 ic;
146 u8 ver;
147 u8 rev;
148 u8 support;
149};
150
151/* PN533_CMD_RF_CONFIGURATION */
34a85bfc 152#define PN533_CFGITEM_TIMING 0x02
c46ee386 153#define PN533_CFGITEM_MAX_RETRIES 0x05
5c7b0531 154#define PN533_CFGITEM_PASORI 0x82
c46ee386 155
34a85bfc
SO		 156#define PN533_CONFIG_TIMING_102 0xb
157#define PN533_CONFIG_TIMING_204 0xc
158#define PN533_CONFIG_TIMING_409 0xd
159#define PN533_CONFIG_TIMING_819 0xe
160
c46ee386
AAJ		 161#define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00
162#define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF
163
164struct pn533_config_max_retries {
165 u8 mx_rty_atr;
166 u8 mx_rty_psl;
167 u8 mx_rty_passive_act;
168} __packed;
169
34a85bfc
SO		 170struct pn533_config_timing {
171 u8 rfu;
172 u8 atr_res_timeout;
173 u8 dep_timeout;
174} __packed;
175
c46ee386
AAJ		 176/* PN533_CMD_IN_LIST_PASSIVE_TARGET */
177
178/* felica commands opcode */
179#define PN533_FELICA_OPC_SENSF_REQ 0
180#define PN533_FELICA_OPC_SENSF_RES 1
181/* felica SENSF_REQ parameters */
182#define PN533_FELICA_SENSF_SC_ALL 0xFFFF
183#define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0
184#define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1
185#define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2
186
187/* type B initiator_data values */
188#define PN533_TYPE_B_AFI_ALL_FAMILIES 0
189#define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0
190#define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1
191
192union pn533_cmd_poll_initdata {
193 struct {
194 u8 afi;
195 u8 polling_method;
196 } __packed type_b;
197 struct {
198 u8 opcode;
199 __be16 sc;
200 u8 rc;
201 u8 tsn;
202 } __packed felica;
203};
204
205/* Poll modulations */
206enum {
207 PN533_POLL_MOD_106KBPS_A,
208 PN533_POLL_MOD_212KBPS_FELICA,
209 PN533_POLL_MOD_424KBPS_FELICA,
210 PN533_POLL_MOD_106KBPS_JEWEL,
211 PN533_POLL_MOD_847KBPS_B,
6fbbdc16 212 PN533_LISTEN_MOD,
c46ee386
AAJ		 213
214 __PN533_POLL_MOD_AFTER_LAST,
215};
216#define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1)
217
218struct pn533_poll_modulations {
219 struct {
220 u8 maxtg;
221 u8 brty;
222 union pn533_cmd_poll_initdata initiator_data;
223 } __packed data;
224 u8 len;
225};
226
227const struct pn533_poll_modulations poll_mod[] = {
228 [PN533_POLL_MOD_106KBPS_A] = {
229 .data = {
230 .maxtg = 1,
231 .brty = 0,
232 },
233 .len = 2,
234 },
235 [PN533_POLL_MOD_212KBPS_FELICA] = {
236 .data = {
237 .maxtg = 1,
238 .brty = 1,
239 .initiator_data.felica = {
240 .opcode = PN533_FELICA_OPC_SENSF_REQ,
241 .sc = PN533_FELICA_SENSF_SC_ALL,
242 .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE,
243 .tsn = 0,
244 },
245 },
246 .len = 7,
247 },
248 [PN533_POLL_MOD_424KBPS_FELICA] = {
249 .data = {
250 .maxtg = 1,
251 .brty = 2,
252 .initiator_data.felica = {
253 .opcode = PN533_FELICA_OPC_SENSF_REQ,
254 .sc = PN533_FELICA_SENSF_SC_ALL,
255 .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE,
256 .tsn = 0,
257 },
258 },
259 .len = 7,
260 },
261 [PN533_POLL_MOD_106KBPS_JEWEL] = {
262 .data = {
263 .maxtg = 1,
264 .brty = 4,
265 },
266 .len = 2,
267 },
268 [PN533_POLL_MOD_847KBPS_B] = {
269 .data = {
270 .maxtg = 1,
271 .brty = 8,
272 .initiator_data.type_b = {
273 .afi = PN533_TYPE_B_AFI_ALL_FAMILIES,
274 .polling_method =
275 PN533_TYPE_B_POLL_METHOD_TIMESLOT,
276 },
277 },
278 .len = 3,
279 },
6fbbdc16
SO		 280 [PN533_LISTEN_MOD] = {
281 .len = 0,
282 },
c46ee386
AAJ		 283};
284
285/* PN533_CMD_IN_ATR */
286
c46ee386
AAJ		 287struct pn533_cmd_activate_response {
288 u8 status;
289 u8 nfcid3t[10];
290 u8 didt;
291 u8 bst;
292 u8 brt;
293 u8 to;
294 u8 ppt;
295 /* optional */
296 u8 gt[];
297} __packed;
298
361f3cb7
SO		 299struct pn533_cmd_jump_dep_response {
300 u8 status;
301 u8 tg;
302 u8 nfcid3t[10];
303 u8 didt;
304 u8 bst;
305 u8 brt;
306 u8 to;
307 u8 ppt;
308 /* optional */
309 u8 gt[];
310} __packed;
c46ee386 311
ad3823ce
SO		 312
313/* PN533_TG_INIT_AS_TARGET */
314#define PN533_INIT_TARGET_PASSIVE 0x1
315#define PN533_INIT_TARGET_DEP 0x2
316
fc40a8c1
SO		 317#define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3
318#define PN533_INIT_TARGET_RESP_ACTIVE 0x1
319#define PN533_INIT_TARGET_RESP_DEP 0x4
320
c46ee386
AAJ		 321struct pn533 {
322 struct usb_device *udev;
323 struct usb_interface *interface;
324 struct nfc_dev *nfc_dev;
325
326 struct urb *out_urb;
c46ee386 327 struct urb *in_urb;
c46ee386 328
6ff73fd2
SO		 329 struct sk_buff_head resp_q;
330
4849f85e
SO		 331 struct workqueue_struct *wq;
332 struct work_struct cmd_work;
5d50b364 333 struct work_struct cmd_complete_work;
6fbbdc16 334 struct work_struct poll_work;
6ff73fd2 335 struct work_struct mi_work;
103b34cf 336 struct work_struct tg_work;
6fbbdc16 337 struct timer_list listen_timer;
4849f85e 338 int wq_in_error;
6fbbdc16 339 int cancel_listen;
c46ee386
AAJ		 340
341 pn533_cmd_complete_t cmd_complete;
342 void *cmd_complete_arg;
b1e666f5 343 void *cmd_complete_mi_arg;
0201ed03 344 struct mutex cmd_lock;
c46ee386
AAJ		 345 u8 cmd;
346
347 struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1];
348 u8 poll_mod_count;
349 u8 poll_mod_curr;
350 u32 poll_protocols;
6fbbdc16
SO		 351 u32 listen_protocols;
352
353 u8 *gb;
354 size_t gb_len;
c46ee386
AAJ		 355
356 u8 tgt_available_prots;
357 u8 tgt_active_prot;
51ad304c 358 u8 tgt_mode;
5c7b0531
SO		 359
360 u32 device_type;
5d50b364
SO		 361
362 struct list_head cmd_queue;
363 u8 cmd_pending;
364};
365
366struct pn533_cmd {
367 struct list_head queue;
aada17ac
WR		 368 u8 cmd_code;
369 struct sk_buff *req;
370 struct sk_buff *resp;
5d50b364 371 void *arg;
c46ee386
AAJ		 372};
373
374struct pn533_frame {
375 u8 preamble;
376 __be16 start_frame;
377 u8 datalen;
378 u8 datalen_checksum;
379 u8 data[];
380} __packed;
381
382/* The rule: value + checksum = 0 */
383static inline u8 pn533_checksum(u8 value)
384{
385 return ~value + 1;
386}
387
388/* The rule: sum(data elements) + checksum = 0 */
389static u8 pn533_data_checksum(u8 *data, int datalen)
390{
391 u8 sum = 0;
392 int i;
393
394 for (i = 0; i < datalen; i++)
395 sum += data[i];
396
397 return pn533_checksum(sum);
398}
399
c46ee386
AAJ		 400static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd)
401{
402 frame->preamble = 0;
403 frame->start_frame = cpu_to_be16(PN533_SOF);
404 PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT;
405 PN533_FRAME_CMD(frame) = cmd;
406 frame->datalen = 2;
407}
408
409static void pn533_tx_frame_finish(struct pn533_frame *frame)
410{
411 frame->datalen_checksum = pn533_checksum(frame->datalen);
412
413 PN533_FRAME_CHECKSUM(frame) =
414 pn533_data_checksum(frame->data, frame->datalen);
415
416 PN533_FRAME_POSTAMBLE(frame) = 0;
417}
418
419static bool pn533_rx_frame_is_valid(struct pn533_frame *frame)
420{
421 u8 checksum;
422
423 if (frame->start_frame != cpu_to_be16(PN533_SOF))
424 return false;
425
426 checksum = pn533_checksum(frame->datalen);
427 if (checksum != frame->datalen_checksum)
428 return false;
429
430 checksum = pn533_data_checksum(frame->data, frame->datalen);
431 if (checksum != PN533_FRAME_CHECKSUM(frame))
432 return false;
433
434 return true;
435}
436
437static bool pn533_rx_frame_is_ack(struct pn533_frame *frame)
438{
439 if (frame->start_frame != cpu_to_be16(PN533_SOF))
440 return false;
441
442 if (frame->datalen != 0 || frame->datalen_checksum != 0xFF)
443 return false;
444
445 return true;
446}
447
448static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd)
449{
450 return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd));
451}
452
4849f85e
SO		 453
454static void pn533_wq_cmd_complete(struct work_struct *work)
c46ee386 455{
5d50b364 456 struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
c46ee386
AAJ		 457 int rc;
458
0c33d262 459 rc = dev->cmd_complete(dev, dev->cmd_complete_arg, dev->wq_in_error);
c46ee386 460 if (rc != -EINPROGRESS)
5d50b364 461 queue_work(dev->wq, &dev->cmd_work);
c46ee386
AAJ		 462}
463
464static void pn533_recv_response(struct urb *urb)
465{
466 struct pn533 *dev = urb->context;
467 struct pn533_frame *in_frame;
468
c46ee386
AAJ		 469 switch (urb->status) {
470 case 0:
f8f99171 471 break; /* success */
c46ee386
AAJ		 472 case -ECONNRESET:
473 case -ENOENT:
6ca55372 474 nfc_dev_dbg(&dev->interface->dev,
f8f99171
WR		 475 "The urb has been canceled (status %d)",
476 urb->status);
4849f85e
SO		 477 dev->wq_in_error = urb->status;
478 goto sched_wq;
f8f99171
WR		 479 break;
480 case -ESHUTDOWN:
c46ee386 481 default:
6ca55372 482 nfc_dev_err(&dev->interface->dev,
f8f99171 483 "Urb failure (status %d)", urb->status);
4849f85e
SO		 484 dev->wq_in_error = urb->status;
485 goto sched_wq;
c46ee386
AAJ		 486 }
487
488 in_frame = dev->in_urb->transfer_buffer;
489
fcfafc76 490 nfc_dev_dbg(&dev->interface->dev, "Received a frame.");
99e591be
WR		 491 print_hex_dump(KERN_DEBUG, "PN533 RX: ", DUMP_PREFIX_NONE, 16, 1,
492 in_frame, PN533_FRAME_SIZE(in_frame), false);
493
c46ee386
AAJ		 494 if (!pn533_rx_frame_is_valid(in_frame)) {
495 nfc_dev_err(&dev->interface->dev, "Received an invalid frame");
4849f85e
SO		 496 dev->wq_in_error = -EIO;
497 goto sched_wq;
c46ee386
AAJ		 498 }
499
500 if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) {
6ca55372
WR		 501 nfc_dev_err(&dev->interface->dev,
502 "It it not the response to the last command");
4849f85e
SO		 503 dev->wq_in_error = -EIO;
504 goto sched_wq;
c46ee386
AAJ		 505 }
506
4849f85e 507 dev->wq_in_error = 0;
c46ee386 508
4849f85e 509sched_wq:
5d50b364 510 queue_work(dev->wq, &dev->cmd_complete_work);
c46ee386
AAJ		 511}
512
513static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags)
514{
515 dev->in_urb->complete = pn533_recv_response;
516
517 return usb_submit_urb(dev->in_urb, flags);
518}
519
520static void pn533_recv_ack(struct urb *urb)
521{
522 struct pn533 *dev = urb->context;
523 struct pn533_frame *in_frame;
524 int rc;
525
526 switch (urb->status) {
527 case 0:
f8f99171 528 break; /* success */
c46ee386
AAJ		 529 case -ECONNRESET:
530 case -ENOENT:
6ca55372 531 nfc_dev_dbg(&dev->interface->dev,
f8f99171
WR		 532 "The urb has been stopped (status %d)",
533 urb->status);
4849f85e
SO		 534 dev->wq_in_error = urb->status;
535 goto sched_wq;
f8f99171
WR		 536 break;
537 case -ESHUTDOWN:
c46ee386 538 default:
6ca55372 539 nfc_dev_err(&dev->interface->dev,
f8f99171 540 "Urb failure (status %d)", urb->status);
4849f85e
SO		 541 dev->wq_in_error = urb->status;
542 goto sched_wq;
c46ee386
AAJ		 543 }
544
545 in_frame = dev->in_urb->transfer_buffer;
546
547 if (!pn533_rx_frame_is_ack(in_frame)) {
548 nfc_dev_err(&dev->interface->dev, "Received an invalid ack");
4849f85e
SO		 549 dev->wq_in_error = -EIO;
550 goto sched_wq;
c46ee386
AAJ		 551 }
552
c46ee386
AAJ		 553 rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC);
554 if (rc) {
6ca55372
WR		 555 nfc_dev_err(&dev->interface->dev,
556 "usb_submit_urb failed with result %d", rc);
4849f85e
SO		 557 dev->wq_in_error = rc;
558 goto sched_wq;
c46ee386
AAJ		 559 }
560
561 return;
562
4849f85e 563sched_wq:
5d50b364 564 queue_work(dev->wq, &dev->cmd_complete_work);
c46ee386
AAJ		 565}
566
567static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags)
568{
569 dev->in_urb->complete = pn533_recv_ack;
570
571 return usb_submit_urb(dev->in_urb, flags);
572}
573
574static int pn533_send_ack(struct pn533 *dev, gfp_t flags)
575{
5b5a4437
WR		 576 u8 ack[PN533_FRAME_ACK_SIZE] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00};
577 /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */
c46ee386
AAJ		 578 int rc;
579
580 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
581
5b5a4437
WR		 582 dev->out_urb->transfer_buffer = ack;
583 dev->out_urb->transfer_buffer_length = sizeof(ack);
c46ee386
AAJ		 584 rc = usb_submit_urb(dev->out_urb, flags);
585
586 return rc;
587}
588
e8f40531
WR		 589static int __pn533_send_frame_async(struct pn533 *dev,
590 struct sk_buff *out,
591 struct sk_buff *in,
592 int in_len,
c46ee386 593 pn533_cmd_complete_t cmd_complete,
d94ea4f5 594 void *arg)
c46ee386
AAJ		 595{
596 int rc;
597
e8f40531 598 dev->cmd = PN533_FRAME_CMD(((struct pn533_frame *)out->data));
c46ee386
AAJ		 599 dev->cmd_complete = cmd_complete;
600 dev->cmd_complete_arg = arg;
601
e8f40531
WR		 602 dev->out_urb->transfer_buffer = out->data;
603 dev->out_urb->transfer_buffer_length = out->len;
c46ee386 604
e8f40531
WR		 605 dev->in_urb->transfer_buffer = in->data;
606 dev->in_urb->transfer_buffer_length = in_len;
c46ee386 607
99e591be 608 print_hex_dump(KERN_DEBUG, "PN533 TX: ", DUMP_PREFIX_NONE, 16, 1,
e8f40531 609 out->data, out->len, false);
99e591be 610
d94ea4f5 611 rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
c46ee386
AAJ		 612 if (rc)
613 return rc;
614
d94ea4f5 615 rc = pn533_submit_urb_for_ack(dev, GFP_KERNEL);
c46ee386
AAJ		 616 if (rc)
617 goto error;
618
619 return 0;
620
621error:
622 usb_unlink_urb(dev->out_urb);
623 return rc;
624}
625
aada17ac
WR		 626static void pn533_build_cmd_frame(u8 cmd_code, struct sk_buff *skb)
627{
628 struct pn533_frame *frame;
629 /* payload is already there, just update datalen */
630 int payload_len = skb->len;
631
632 skb_push(skb, PN533_FRAME_HEADER_LEN);
633 skb_put(skb, PN533_FRAME_TAIL_LEN);
634
635 frame = (struct pn533_frame *)skb->data;
636
637 pn533_tx_frame_init(frame, cmd_code);
638 frame->datalen += payload_len;
639 pn533_tx_frame_finish(frame);
640}
641
642struct pn533_send_async_complete_arg {
643 pn533_send_async_complete_t complete_cb;
644 void *complete_cb_context;
645 struct sk_buff *resp;
646 struct sk_buff *req;
647};
648
0c33d262 649static int pn533_send_async_complete(struct pn533 *dev, void *_arg, int status)
aada17ac
WR		 650{
651 struct pn533_send_async_complete_arg *arg = _arg;
652
653 struct sk_buff *req = arg->req;
654 struct sk_buff *resp = arg->resp;
655
656 struct pn533_frame *frame = (struct pn533_frame *)resp->data;
657 int rc;
658
659 dev_kfree_skb(req);
660
0c33d262 661 if (status < 0) {
aada17ac 662 arg->complete_cb(dev, arg->complete_cb_context,
0c33d262 663 ERR_PTR(status));
aada17ac 664 dev_kfree_skb(resp);
0c33d262
WR		 665 kfree(arg);
666 return status;
aada17ac
WR		 667 }
668
669 skb_put(resp, PN533_FRAME_SIZE(frame));
670 skb_pull(resp, PN533_FRAME_HEADER_LEN);
671 skb_trim(resp, resp->len - PN533_FRAME_TAIL_LEN);
672
673 rc = arg->complete_cb(dev, arg->complete_cb_context, resp);
674
aada17ac
WR		 675 kfree(arg);
676 return rc;
677}
678
679static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
680 struct sk_buff *req, struct sk_buff *resp,
681 int resp_len,
682 pn533_send_async_complete_t complete_cb,
683 void *complete_cb_context)
684{
685 struct pn533_cmd *cmd;
686 struct pn533_send_async_complete_arg *arg;
687 int rc = 0;
688
fcfafc76 689 nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code);
aada17ac
WR		 690
691 arg = kzalloc(sizeof(arg), GFP_KERNEL);
692 if (!arg)
693 return -ENOMEM;
694
695 arg->complete_cb = complete_cb;
696 arg->complete_cb_context = complete_cb_context;
697 arg->resp = resp;
698 arg->req = req;
699
700 pn533_build_cmd_frame(cmd_code, req);
701
702 mutex_lock(&dev->cmd_lock);
703
704 if (!dev->cmd_pending) {
e8f40531
WR		 705 rc = __pn533_send_frame_async(dev, req, resp, resp_len,
706 pn533_send_async_complete, arg);
aada17ac
WR		 707 if (rc)
708 goto error;
709
710 dev->cmd_pending = 1;
711 goto unlock;
712 }
713
fcfafc76
WR		 714 nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__,
715 cmd_code);
aada17ac
WR		 716
717 cmd = kzalloc(sizeof(struct pn533_cmd), GFP_KERNEL);
718 if (!cmd) {
719 rc = -ENOMEM;
720 goto error;
721 }
722
723 INIT_LIST_HEAD(&cmd->queue);
724 cmd->cmd_code = cmd_code;
725 cmd->req = req;
726 cmd->resp = resp;
727 cmd->arg = arg;
728
729 list_add_tail(&cmd->queue, &dev->cmd_queue);
730
731 goto unlock;
732
733error:
734 kfree(arg);
735unlock:
736 mutex_unlock(&dev->cmd_lock);
737 return rc;
15461aeb
WR		 738}
739
740static int pn533_send_data_async(struct pn533 *dev, u8 cmd_code,
741 struct sk_buff *req,
742 pn533_send_async_complete_t complete_cb,
743 void *complete_cb_context)
744{
745 struct sk_buff *resp;
746 int rc;
747 int resp_len = PN533_FRAME_HEADER_LEN +
748 PN533_FRAME_MAX_PAYLOAD_LEN +
749 PN533_FRAME_TAIL_LEN;
750
15461aeb
WR		 751 resp = nfc_alloc_recv_skb(resp_len, GFP_KERNEL);
752 if (!resp)
753 return -ENOMEM;
754
755 rc = __pn533_send_async(dev, cmd_code, req, resp, resp_len, complete_cb,
756 complete_cb_context);
757 if (rc)
758 dev_kfree_skb(resp);
759
760 return rc;
aada17ac
WR		 761}
762
763static int pn533_send_cmd_async(struct pn533 *dev, u8 cmd_code,
764 struct sk_buff *req,
765 pn533_send_async_complete_t complete_cb,
766 void *complete_cb_context)
767{
768 struct sk_buff *resp;
769 int rc;
770
aada17ac
WR		 771 resp = alloc_skb(PN533_NORMAL_FRAME_MAX_LEN, GFP_KERNEL);
772 if (!resp)
773 return -ENOMEM;
774
775 rc = __pn533_send_async(dev, cmd_code, req, resp,
776 PN533_NORMAL_FRAME_MAX_LEN,
777 complete_cb, complete_cb_context);
778 if (rc)
779 dev_kfree_skb(resp);
780
781 return rc;
782}
783
b1e666f5
WR		 784/*
785 * pn533_send_cmd_direct_async
786 *
787 * The function sends a piority cmd directly to the chip omiting the cmd
788 * queue. It's intended to be used by chaining mechanism of received responses
789 * where the host has to request every single chunk of data before scheduling
790 * next cmd from the queue.
791 */
792static int pn533_send_cmd_direct_async(struct pn533 *dev, u8 cmd_code,
793 struct sk_buff *req,
794 pn533_send_async_complete_t complete_cb,
795 void *complete_cb_context)
796{
797 struct pn533_send_async_complete_arg *arg;
798 struct sk_buff *resp;
799 int rc;
800 int resp_len = PN533_FRAME_HEADER_LEN +
801 PN533_FRAME_MAX_PAYLOAD_LEN +
802 PN533_FRAME_TAIL_LEN;
803
b1e666f5
WR		 804 resp = alloc_skb(resp_len, GFP_KERNEL);
805 if (!resp)
806 return -ENOMEM;
807
808 arg = kzalloc(sizeof(arg), GFP_KERNEL);
809 if (!arg) {
810 dev_kfree_skb(resp);
811 return -ENOMEM;
812 }
813
814 arg->complete_cb = complete_cb;
815 arg->complete_cb_context = complete_cb_context;
816 arg->resp = resp;
817 arg->req = req;
818
819 pn533_build_cmd_frame(cmd_code, req);
820
e8f40531
WR		 821 rc = __pn533_send_frame_async(dev, req, resp, resp_len,
822 pn533_send_async_complete, arg);
b1e666f5
WR		 823 if (rc < 0) {
824 dev_kfree_skb(resp);
825 kfree(arg);
826 }
827
828 return rc;
829}
830
5d50b364
SO		 831static void pn533_wq_cmd(struct work_struct *work)
832{
833 struct pn533 *dev = container_of(work, struct pn533, cmd_work);
834 struct pn533_cmd *cmd;
835
836 mutex_lock(&dev->cmd_lock);
837
838 if (list_empty(&dev->cmd_queue)) {
839 dev->cmd_pending = 0;
840 mutex_unlock(&dev->cmd_lock);
841 return;
842 }
843
844 cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue);
845
60ad07ab
SJ		 846 list_del(&cmd->queue);
847
5d50b364
SO		 848 mutex_unlock(&dev->cmd_lock);
849
e8f40531
WR		 850 __pn533_send_frame_async(dev, cmd->req, cmd->resp,
851 PN533_NORMAL_FRAME_MAX_LEN,
852 pn533_send_async_complete,
853 cmd->arg);
5d50b364 854
5d50b364
SO		 855 kfree(cmd);
856}
857
c46ee386 858struct pn533_sync_cmd_response {
94c5c156 859 struct sk_buff *resp;
c46ee386
AAJ		 860 struct completion done;
861};
862
94c5c156
WR		 863static int pn533_send_sync_complete(struct pn533 *dev, void *_arg,
864 struct sk_buff *resp)
865{
866 struct pn533_sync_cmd_response *arg = _arg;
867
94c5c156
WR		 868 arg->resp = resp;
869 complete(&arg->done);
870
871 return 0;
872}
873
874/* pn533_send_cmd_sync
875 *
876 * Please note the req parameter is freed inside the function to
877 * limit a number of return value interpretations by the caller.
878 *
879 * 1. negative in case of error during TX path -> req should be freed
880 *
881 * 2. negative in case of error during RX path -> req should not be freed
882 * as it's been already freed at the begining of RX path by
883 * async_complete_cb.
884 *
885 * 3. valid pointer in case of succesfult RX path
886 *
887 * A caller has to check a return value with IS_ERR macro. If the test pass,
888 * the returned pointer is valid.
889 *
890 * */
891static struct sk_buff *pn533_send_cmd_sync(struct pn533 *dev, u8 cmd_code,
892 struct sk_buff *req)
893{
894 int rc;
895 struct pn533_sync_cmd_response arg;
896
94c5c156
WR		 897 init_completion(&arg.done);
898
899 rc = pn533_send_cmd_async(dev, cmd_code, req,
900 pn533_send_sync_complete, &arg);
901 if (rc) {
902 dev_kfree_skb(req);
903 return ERR_PTR(rc);
904 }
905
906 wait_for_completion(&arg.done);
907
908 return arg.resp;
909}
910
c46ee386
AAJ		 911static void pn533_send_complete(struct urb *urb)
912{
913 struct pn533 *dev = urb->context;
914
c46ee386
AAJ		 915 switch (urb->status) {
916 case 0:
f8f99171 917 break; /* success */
c46ee386
AAJ		 918 case -ECONNRESET:
919 case -ENOENT:
6ca55372 920 nfc_dev_dbg(&dev->interface->dev,
f8f99171
WR		 921 "The urb has been stopped (status %d)",
922 urb->status);
c46ee386 923 break;
f8f99171 924 case -ESHUTDOWN:
c46ee386 925 default:
f8f99171
WR		 926 nfc_dev_err(&dev->interface->dev,
927 "Urb failure (status %d)", urb->status);
c46ee386
AAJ		 928 }
929}
930
d22b2db6
WR		 931static struct sk_buff *pn533_alloc_skb(unsigned int size)
932{
933 struct sk_buff *skb;
934
935 skb = alloc_skb(PN533_FRAME_HEADER_LEN +
936 size +
937 PN533_FRAME_TAIL_LEN, GFP_KERNEL);
938
939 if (skb)
940 skb_reserve(skb, PN533_FRAME_HEADER_LEN);
941
942 return skb;
943}
944
c46ee386
AAJ		 945struct pn533_target_type_a {
946 __be16 sens_res;
947 u8 sel_res;
948 u8 nfcid_len;
949 u8 nfcid_data[];
950} __packed;
951
952
953#define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
954#define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
955#define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
956
957#define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
958#define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
959
960#define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
961#define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
962
963#define PN533_TYPE_A_SEL_PROT_MIFARE 0
964#define PN533_TYPE_A_SEL_PROT_ISO14443 1
965#define PN533_TYPE_A_SEL_PROT_DEP 2
966#define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
967
968static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a,
969 int target_data_len)
970{
971 u8 ssd;
972 u8 platconf;
973
974 if (target_data_len < sizeof(struct pn533_target_type_a))
975 return false;
976
977 /* The lenght check of nfcid[] and ats[] are not being performed because
978 the values are not being used */
979
980 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
981 ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res);
982 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res);
983
984 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
5d467742
WR		 985 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
986 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
987 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
c46ee386
AAJ		 988 return false;
989
990 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
991 if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0)
992 return false;
993
994 return true;
995}
996
997static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data,
998 int tgt_data_len)
999{
1000 struct pn533_target_type_a *tgt_type_a;
1001
37cf4fc6 1002 tgt_type_a = (struct pn533_target_type_a *)tgt_data;
c46ee386
AAJ		 1003
1004 if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len))
1005 return -EPROTO;
1006
1007 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) {
1008 case PN533_TYPE_A_SEL_PROT_MIFARE:
1009 nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK;
1010 break;
1011 case PN533_TYPE_A_SEL_PROT_ISO14443:
1012 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK;
1013 break;
1014 case PN533_TYPE_A_SEL_PROT_DEP:
1015 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1016 break;
1017 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP:
1018 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK |
1019 NFC_PROTO_NFC_DEP_MASK;
1020 break;
1021 }
1022
1023 nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res);
1024 nfc_tgt->sel_res = tgt_type_a->sel_res;
c3b1e1e8
SO		 1025 nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len;
1026 memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len);
c46ee386
AAJ		 1027
1028 return 0;
1029}
1030
1031struct pn533_target_felica {
1032 u8 pol_res;
1033 u8 opcode;
1034 u8 nfcid2[8];
1035 u8 pad[8];
1036 /* optional */
1037 u8 syst_code[];
1038} __packed;
1039
1040#define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
1041#define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
1042
1043static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica,
1044 int target_data_len)
1045{
1046 if (target_data_len < sizeof(struct pn533_target_felica))
1047 return false;
1048
1049 if (felica->opcode != PN533_FELICA_OPC_SENSF_RES)
1050 return false;
1051
1052 return true;
1053}
1054
1055static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data,
1056 int tgt_data_len)
1057{
1058 struct pn533_target_felica *tgt_felica;
1059
37cf4fc6 1060 tgt_felica = (struct pn533_target_felica *)tgt_data;
c46ee386
AAJ		 1061
1062 if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len))
1063 return -EPROTO;
1064
5d467742
WR		 1065 if ((tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1) &&
1066 (tgt_felica->nfcid2[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2))
c46ee386
AAJ		 1067 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1068 else
1069 nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK;
1070
7975754f
SO		 1071 memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9);
1072 nfc_tgt->sensf_res_len = 9;
1073
c46ee386
AAJ		 1074 return 0;
1075}
1076
1077struct pn533_target_jewel {
1078 __be16 sens_res;
1079 u8 jewelid[4];
1080} __packed;
1081
1082static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel,
1083 int target_data_len)
1084{
1085 u8 ssd;
1086 u8 platconf;
1087
1088 if (target_data_len < sizeof(struct pn533_target_jewel))
1089 return false;
1090
1091 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
1092 ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res);
1093 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res);
1094
1095 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
5d467742
WR		 1096 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
1097 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
1098 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
c46ee386
AAJ		 1099 return false;
1100
1101 return true;
1102}
1103
1104static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data,
1105 int tgt_data_len)
1106{
1107 struct pn533_target_jewel *tgt_jewel;
1108
37cf4fc6 1109 tgt_jewel = (struct pn533_target_jewel *)tgt_data;
c46ee386
AAJ		 1110
1111 if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len))
1112 return -EPROTO;
1113
1114 nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK;
1115 nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res);
d8dc1072
SO		 1116 nfc_tgt->nfcid1_len = 4;
1117 memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len);
c46ee386
AAJ		 1118
1119 return 0;
1120}
1121
1122struct pn533_type_b_prot_info {
1123 u8 bitrate;
1124 u8 fsci_type;
1125 u8 fwi_adc_fo;
1126} __packed;
1127
1128#define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
1129#define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
1130#define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
1131
1132struct pn533_type_b_sens_res {
1133 u8 opcode;
1134 u8 nfcid[4];
1135 u8 appdata[4];
1136 struct pn533_type_b_prot_info prot_info;
1137} __packed;
1138
1139#define PN533_TYPE_B_OPC_SENSB_RES 0x50
1140
1141struct pn533_target_type_b {
1142 struct pn533_type_b_sens_res sensb_res;
1143 u8 attrib_res_len;
1144 u8 attrib_res[];
1145} __packed;
1146
1147static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b,
1148 int target_data_len)
1149{
1150 if (target_data_len < sizeof(struct pn533_target_type_b))
1151 return false;
1152
1153 if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES)
1154 return false;
1155
1156 if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) &
1157 PN533_TYPE_B_PROT_TYPE_RFU_MASK)
1158 return false;
1159
1160 return true;
1161}
1162
1163static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data,
1164 int tgt_data_len)
1165{
1166 struct pn533_target_type_b *tgt_type_b;
1167
37cf4fc6 1168 tgt_type_b = (struct pn533_target_type_b *)tgt_data;
c46ee386
AAJ		 1169
1170 if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len))
1171 return -EPROTO;
1172
01d719a2 1173 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
c46ee386
AAJ		 1174
1175 return 0;
1176}
1177
b5193e5d
WR		 1178static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
1179 int tgdata_len)
c46ee386 1180{
c46ee386
AAJ		 1181 struct nfc_target nfc_tgt;
1182 int rc;
1183
1184 nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__,
b5193e5d 1185 dev->poll_mod_curr);
c46ee386 1186
b5193e5d 1187 if (tg != 1)
c46ee386
AAJ		 1188 return -EPROTO;
1189
98b3ac1b
SO		 1190 memset(&nfc_tgt, 0, sizeof(struct nfc_target));
1191
c46ee386
AAJ		 1192 switch (dev->poll_mod_curr) {
1193 case PN533_POLL_MOD_106KBPS_A:
b5193e5d 1194 rc = pn533_target_found_type_a(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1195 break;
1196 case PN533_POLL_MOD_212KBPS_FELICA:
1197 case PN533_POLL_MOD_424KBPS_FELICA:
b5193e5d 1198 rc = pn533_target_found_felica(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1199 break;
1200 case PN533_POLL_MOD_106KBPS_JEWEL:
b5193e5d 1201 rc = pn533_target_found_jewel(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1202 break;
1203 case PN533_POLL_MOD_847KBPS_B:
b5193e5d 1204 rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len);
c46ee386
AAJ		 1205 break;
1206 default:
b5193e5d
WR		 1207 nfc_dev_err(&dev->interface->dev,
1208 "Unknown current poll modulation");
c46ee386
AAJ		 1209 return -EPROTO;
1210 }
1211
1212 if (rc)
1213 return rc;
1214
1215 if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
b5193e5d
WR		 1216 nfc_dev_dbg(&dev->interface->dev,
1217 "The Tg found doesn't have the desired protocol");
c46ee386
AAJ		 1218 return -EAGAIN;
1219 }
1220
b5193e5d
WR		 1221 nfc_dev_dbg(&dev->interface->dev,
1222 "Target found - supported protocols: 0x%x",
1223 nfc_tgt.supported_protocols);
c46ee386
AAJ		 1224
1225 dev->tgt_available_prots = nfc_tgt.supported_protocols;
1226
1227 nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1);
1228
1229 return 0;
1230}
1231
6fbbdc16
SO		 1232static inline void pn533_poll_next_mod(struct pn533 *dev)
1233{
1234 dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count;
1235}
1236
c46ee386
AAJ		 1237static void pn533_poll_reset_mod_list(struct pn533 *dev)
1238{
1239 dev->poll_mod_count = 0;
1240}
1241
1242static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index)
1243{
1244 dev->poll_mod_active[dev->poll_mod_count] =
37cf4fc6 1245 (struct pn533_poll_modulations *)&poll_mod[mod_index];
c46ee386
AAJ		 1246 dev->poll_mod_count++;
1247}
1248
6fbbdc16
SO		 1249static void pn533_poll_create_mod_list(struct pn533 *dev,
1250 u32 im_protocols, u32 tm_protocols)
c46ee386
AAJ		 1251{
1252 pn533_poll_reset_mod_list(dev);
1253
b08e8603
WR		 1254 if ((im_protocols & NFC_PROTO_MIFARE_MASK) ||
1255 (im_protocols & NFC_PROTO_ISO14443_MASK) ||
1256 (im_protocols & NFC_PROTO_NFC_DEP_MASK))
c46ee386
AAJ		 1257 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A);
1258
b08e8603
WR		 1259 if (im_protocols & NFC_PROTO_FELICA_MASK ||
1260 im_protocols & NFC_PROTO_NFC_DEP_MASK) {
c46ee386
AAJ		 1261 pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA);
1262 pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA);
1263 }
1264
6fbbdc16 1265 if (im_protocols & NFC_PROTO_JEWEL_MASK)
c46ee386
AAJ		 1266 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL);
1267
01d719a2 1268 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
c46ee386 1269 pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B);
c46ee386 1270
6fbbdc16
SO		 1271 if (tm_protocols)
1272 pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
c46ee386
AAJ		 1273}
1274
b5193e5d 1275static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp)
c46ee386 1276{
b5193e5d
WR		 1277 u8 nbtg, tg, *tgdata;
1278 int rc, tgdata_len;
c46ee386
AAJ		 1279
1280 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1281
b5193e5d
WR		 1282 nbtg = resp->data[0];
1283 tg = resp->data[1];
1284 tgdata = &resp->data[2];
1285 tgdata_len = resp->len - 2; /* nbtg + tg */
1286
1287 if (nbtg) {
1288 rc = pn533_target_found(dev, tg, tgdata, tgdata_len);
c46ee386
AAJ		 1289
1290 /* We must stop the poll after a valid target found */
6fbbdc16
SO		 1291 if (rc == 0) {
1292 pn533_poll_reset_mod_list(dev);
1293 return 0;
1294 }
c46ee386
AAJ		 1295 }
1296
6fbbdc16 1297 return -EAGAIN;
c46ee386
AAJ		 1298}
1299
b5193e5d 1300static struct sk_buff *pn533_alloc_poll_tg_frame(u8 *gbytes, size_t gbytes_len)
ad3823ce 1301{
b5193e5d
WR		 1302 struct sk_buff *skb;
1303 u8 *felica, *nfcid3, *gb;
1304
51d9e803
SO		 1305 u8 felica_params[18] = {0x1, 0xfe, /* DEP */
1306 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */
1307 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1308 0xff, 0xff}; /* System code */
b5193e5d 1309
51d9e803
SO		 1310 u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */
1311 0x0, 0x0, 0x0,
1312 0x40}; /* SEL_RES for DEP */
ad3823ce 1313
b5193e5d
WR		 1314 unsigned int skb_len = 36 + /* mode (1), mifare (6),
1315 felica (18), nfcid3 (10), gb_len (1) */
1316 gbytes_len +
1317 1; /* len Tk*/
ad3823ce 1318
b5193e5d
WR		 1319 skb = pn533_alloc_skb(skb_len);
1320 if (!skb)
1321 return NULL;
ad3823ce
SO		 1322
1323 /* DEP support only */
b5193e5d
WR		 1324 *skb_put(skb, 1) |= PN533_INIT_TARGET_DEP;
1325
1326 /* MIFARE params */
1327 memcpy(skb_put(skb, 6), mifare_params, 6);
51d9e803
SO		 1328
1329 /* Felica params */
b5193e5d
WR		 1330 felica = skb_put(skb, 18);
1331 memcpy(felica, felica_params, 18);
1332 get_random_bytes(felica + 2, 6);
51d9e803
SO		 1333
1334 /* NFCID3 */
b5193e5d
WR		 1335 nfcid3 = skb_put(skb, 10);
1336 memset(nfcid3, 0, 10);
1337 memcpy(nfcid3, felica, 8);
51d9e803
SO		 1338
1339 /* General bytes */
b5193e5d 1340 *skb_put(skb, 1) = gbytes_len;
51d9e803 1341
b5193e5d
WR		 1342 gb = skb_put(skb, gbytes_len);
1343 memcpy(gb, gbytes, gbytes_len);
ad3823ce 1344
b5193e5d
WR		 1345 /* Len Tk */
1346 *skb_put(skb, 1) = 0;
51d9e803 1347
b5193e5d 1348 return skb;
ad3823ce
SO		 1349}
1350
b1bb290a 1351#define PN533_CMD_DATAEXCH_HEAD_LEN 1
103b34cf
SO		 1352#define PN533_CMD_DATAEXCH_DATA_MAXLEN 262
1353static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,
e4878823 1354 struct sk_buff *resp)
103b34cf 1355{
e4878823 1356 u8 status;
103b34cf
SO		 1357
1358 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1359
e4878823
WR		 1360 if (IS_ERR(resp))
1361 return PTR_ERR(resp);
103b34cf 1362
e4878823
WR		 1363 status = resp->data[0];
1364 skb_pull(resp, sizeof(status));
103b34cf 1365
e4878823 1366 if (status != 0) {
103b34cf 1367 nfc_tm_deactivated(dev->nfc_dev);
51ad304c 1368 dev->tgt_mode = 0;
e4878823 1369 dev_kfree_skb(resp);
103b34cf
SO		 1370 return 0;
1371 }
1372
e4878823 1373 return nfc_tm_data_received(dev->nfc_dev, resp);
103b34cf
SO		 1374}
1375
1376static void pn533_wq_tg_get_data(struct work_struct *work)
1377{
1378 struct pn533 *dev = container_of(work, struct pn533, tg_work);
103b34cf 1379
e4878823
WR		 1380 struct sk_buff *skb;
1381 int rc;
103b34cf 1382
e4878823 1383 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
103b34cf 1384
e4878823
WR		 1385 skb = pn533_alloc_skb(0);
1386 if (!skb)
103b34cf
SO		 1387 return;
1388
e4878823
WR		 1389 rc = pn533_send_data_async(dev, PN533_CMD_TG_GET_DATA, skb,
1390 pn533_tm_get_data_complete, NULL);
103b34cf 1391
e4878823
WR		 1392 if (rc < 0)
1393 dev_kfree_skb(skb);
103b34cf
SO		 1394
1395 return;
1396}
1397
fc40a8c1 1398#define ATR_REQ_GB_OFFSET 17
b5193e5d 1399static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
fe7c5800 1400{
b5193e5d 1401 u8 mode, *cmd, comm_mode = NFC_COMM_PASSIVE, *gb;
fc40a8c1 1402 size_t gb_len;
103b34cf 1403 int rc;
ad3823ce
SO		 1404
1405 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1406
b5193e5d 1407 if (resp->len < ATR_REQ_GB_OFFSET + 1)
fc40a8c1
SO		 1408 return -EINVAL;
1409
b5193e5d
WR		 1410 mode = resp->data[0];
1411 cmd = &resp->data[1];
ad3823ce 1412
b5193e5d
WR		 1413 nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n",
1414 mode, resp->len);
ad3823ce 1415
b5193e5d
WR		 1416 if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) ==
1417 PN533_INIT_TARGET_RESP_ACTIVE)
fc40a8c1
SO		 1418 comm_mode = NFC_COMM_ACTIVE;
1419
b5193e5d 1420 if ((mode & PN533_INIT_TARGET_RESP_DEP) == 0) /* Only DEP supported */
fc40a8c1
SO		 1421 return -EOPNOTSUPP;
1422
b5193e5d
WR		 1423 gb = cmd + ATR_REQ_GB_OFFSET;
1424 gb_len = resp->len - (ATR_REQ_GB_OFFSET + 1);
fc40a8c1 1425
103b34cf
SO		 1426 rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK,
1427 comm_mode, gb, gb_len);
1428 if (rc < 0) {
1429 nfc_dev_err(&dev->interface->dev,
1430 "Error when signaling target activation");
1431 return rc;
1432 }
1433
51ad304c 1434 dev->tgt_mode = 1;
103b34cf
SO		 1435 queue_work(dev->wq, &dev->tg_work);
1436
1437 return 0;
fe7c5800
SO		 1438}
1439
6fbbdc16 1440static void pn533_listen_mode_timer(unsigned long data)
ad3823ce 1441{
37cf4fc6 1442 struct pn533 *dev = (struct pn533 *)data;
6fbbdc16
SO		 1443
1444 nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout");
1445
1446 /* An ack will cancel the last issued command (poll) */
1447 pn533_send_ack(dev, GFP_ATOMIC);
1448
1449 dev->cancel_listen = 1;
1450
6fbbdc16
SO		 1451 pn533_poll_next_mod(dev);
1452
1453 queue_work(dev->wq, &dev->poll_work);
1454}
1455
1456static int pn533_poll_complete(struct pn533 *dev, void *arg,
b5193e5d 1457 struct sk_buff *resp)
6fbbdc16
SO		 1458{
1459 struct pn533_poll_modulations *cur_mod;
ad3823ce
SO		 1460 int rc;
1461
6fbbdc16 1462 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
ad3823ce 1463
b5193e5d
WR		 1464 if (IS_ERR(resp)) {
1465 rc = PTR_ERR(resp);
1466
1467 nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d",
1468 __func__, rc);
1469
1470 if (rc == -ENOENT) {
1471 if (dev->poll_mod_count != 0)
1472 return rc;
1473 else
1474 goto stop_poll;
1475 } else if (rc < 0) {
1476 nfc_dev_err(&dev->interface->dev,
1477 "Error %d when running poll", rc);
1478 goto stop_poll;
1479 }
6fbbdc16 1480 }
ad3823ce 1481
6fbbdc16
SO		 1482 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1483
b5193e5d 1484 if (cur_mod->len == 0) { /* Target mode */
6fbbdc16 1485 del_timer(&dev->listen_timer);
b5193e5d
WR		 1486 rc = pn533_init_target_complete(dev, resp);
1487 goto done;
6fbbdc16
SO		 1488 }
1489
b5193e5d
WR		 1490 /* Initiator mode */
1491 rc = pn533_start_poll_complete(dev, resp);
1492 if (!rc)
1493 goto done;
6fbbdc16 1494
b5193e5d 1495 pn533_poll_next_mod(dev);
6fbbdc16
SO		 1496 queue_work(dev->wq, &dev->poll_work);
1497
b5193e5d
WR		 1498done:
1499 dev_kfree_skb(resp);
1500 return rc;
6fbbdc16
SO		 1501
1502stop_poll:
b5193e5d
WR		 1503 nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped");
1504
6fbbdc16
SO		 1505 pn533_poll_reset_mod_list(dev);
1506 dev->poll_protocols = 0;
b5193e5d 1507 return rc;
ad3823ce
SO		 1508}
1509
b5193e5d
WR		 1510static struct sk_buff *pn533_alloc_poll_in_frame(struct pn533_poll_modulations
1511 *mod)
c46ee386 1512{
b5193e5d 1513 struct sk_buff *skb;
c46ee386 1514
b5193e5d
WR		 1515 skb = pn533_alloc_skb(mod->len);
1516 if (!skb)
1517 return NULL;
c46ee386 1518
b5193e5d 1519 memcpy(skb_put(skb, mod->len), &mod->data, mod->len);
c46ee386 1520
b5193e5d 1521 return skb;
6fbbdc16 1522}
c46ee386 1523
6fbbdc16
SO		 1524static int pn533_send_poll_frame(struct pn533 *dev)
1525{
b5193e5d
WR		 1526 struct pn533_poll_modulations *mod;
1527 struct sk_buff *skb;
6fbbdc16 1528 int rc;
b5193e5d 1529 u8 cmd_code;
c46ee386 1530
b5193e5d 1531 mod = dev->poll_mod_active[dev->poll_mod_curr];
c46ee386 1532
b5193e5d
WR		 1533 nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n",
1534 __func__, mod->len);
c46ee386 1535
b5193e5d
WR		 1536 if (mod->len == 0) { /* Listen mode */
1537 cmd_code = PN533_CMD_TG_INIT_AS_TARGET;
1538 skb = pn533_alloc_poll_tg_frame(dev->gb, dev->gb_len);
1539 } else { /* Polling mode */
1540 cmd_code = PN533_CMD_IN_LIST_PASSIVE_TARGET;
1541 skb = pn533_alloc_poll_in_frame(mod);
1542 }
1543
1544 if (!skb) {
1545 nfc_dev_err(&dev->interface->dev, "Failed to allocate skb.");
1546 return -ENOMEM;
1547 }
1548
1549 rc = pn533_send_cmd_async(dev, cmd_code, skb, pn533_poll_complete,
1550 NULL);
1551 if (rc < 0) {
1552 dev_kfree_skb(skb);
6fbbdc16 1553 nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc);
b5193e5d 1554 }
c46ee386 1555
6fbbdc16
SO		 1556 return rc;
1557}
1558
1559static void pn533_wq_poll(struct work_struct *work)
1560{
1561 struct pn533 *dev = container_of(work, struct pn533, poll_work);
1562 struct pn533_poll_modulations *cur_mod;
1563 int rc;
1564
1565 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1566
1567 nfc_dev_dbg(&dev->interface->dev,
1568 "%s cancel_listen %d modulation len %d",
1569 __func__, dev->cancel_listen, cur_mod->len);
1570
1571 if (dev->cancel_listen == 1) {
1572 dev->cancel_listen = 0;
1573 usb_kill_urb(dev->in_urb);
c46ee386
AAJ		 1574 }
1575
6fbbdc16
SO		 1576 rc = pn533_send_poll_frame(dev);
1577 if (rc)
1578 return;
c46ee386 1579
6fbbdc16
SO		 1580 if (cur_mod->len == 0 && dev->poll_mod_count > 1)
1581 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
c46ee386 1582
6fbbdc16 1583 return;
c46ee386
AAJ		 1584}
1585
fe7c5800
SO		 1586static int pn533_start_poll(struct nfc_dev *nfc_dev,
1587 u32 im_protocols, u32 tm_protocols)
1588{
1589 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1590
1591 nfc_dev_dbg(&dev->interface->dev,
1592 "%s: im protocols 0x%x tm protocols 0x%x",
1593 __func__, im_protocols, tm_protocols);
1594
1595 if (dev->tgt_active_prot) {
1596 nfc_dev_err(&dev->interface->dev,
1597 "Cannot poll with a target already activated");
1598 return -EBUSY;
1599 }
1600
51ad304c
SO		 1601 if (dev->tgt_mode) {
1602 nfc_dev_err(&dev->interface->dev,
1603 "Cannot poll while already being activated");
1604 return -EBUSY;
1605 }
1606
6fbbdc16
SO		 1607 if (tm_protocols) {
1608 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1609 if (dev->gb == NULL)
1610 tm_protocols = 0;
1611 }
ad3823ce 1612
6fbbdc16
SO		 1613 dev->poll_mod_curr = 0;
1614 pn533_poll_create_mod_list(dev, im_protocols, tm_protocols);
1615 dev->poll_protocols = im_protocols;
1616 dev->listen_protocols = tm_protocols;
ad3823ce 1617
6fbbdc16 1618 return pn533_send_poll_frame(dev);
fe7c5800
SO		 1619}
1620
c46ee386
AAJ		 1621static void pn533_stop_poll(struct nfc_dev *nfc_dev)
1622{
1623 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1624
1625 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1626
6fbbdc16
SO		 1627 del_timer(&dev->listen_timer);
1628
c46ee386 1629 if (!dev->poll_mod_count) {
6ca55372
WR		 1630 nfc_dev_dbg(&dev->interface->dev,
1631 "Polling operation was not running");
c46ee386
AAJ		 1632 return;
1633 }
1634
1635 /* An ack will cancel the last issued command (poll) */
1636 pn533_send_ack(dev, GFP_KERNEL);
1637
1638 /* prevent pn533_start_poll_complete to issue a new poll meanwhile */
1639 usb_kill_urb(dev->in_urb);
7c2a04a9
SO		 1640
1641 pn533_poll_reset_mod_list(dev);
c46ee386
AAJ		 1642}
1643
1644static int pn533_activate_target_nfcdep(struct pn533 *dev)
1645{
cb950d93 1646 struct pn533_cmd_activate_response *rsp;
541d920b 1647 u16 gt_len;
c46ee386
AAJ		 1648 int rc;
1649
cb950d93
WR		 1650 struct sk_buff *skb;
1651 struct sk_buff *resp;
c46ee386 1652
cb950d93 1653 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
c46ee386 1654
cb950d93
WR		 1655 skb = pn533_alloc_skb(sizeof(u8) * 2); /*TG + Next*/
1656 if (!skb)
1657 return -ENOMEM;
c46ee386 1658
cb950d93
WR		 1659 *skb_put(skb, sizeof(u8)) = 1; /* TG */
1660 *skb_put(skb, sizeof(u8)) = 0; /* Next */
c46ee386 1661
cb950d93
WR		 1662 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_ATR, skb);
1663 if (IS_ERR(resp))
1664 return PTR_ERR(resp);
c46ee386 1665
37cf4fc6 1666 rsp = (struct pn533_cmd_activate_response *)resp->data;
cb950d93 1667 rc = rsp->status & PN533_CMD_RET_MASK;
c46ee386 1668 if (rc != PN533_CMD_RET_SUCCESS)
cb950d93 1669 dev_kfree_skb(resp);
c46ee386
AAJ		 1670 return -EIO;
1671
541d920b 1672 /* ATR_RES general bytes are located at offset 16 */
cb950d93
WR		 1673 gt_len = resp->len - 16;
1674 rc = nfc_set_remote_general_bytes(dev->nfc_dev, rsp->gt, gt_len);
541d920b 1675
cb950d93 1676 dev_kfree_skb(resp);
541d920b 1677 return rc;
c46ee386
AAJ		 1678}
1679
90099433
EL		 1680static int pn533_activate_target(struct nfc_dev *nfc_dev,
1681 struct nfc_target *target, u32 protocol)
c46ee386
AAJ		 1682{
1683 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1684 int rc;
1685
1686 nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__,
5d467742 1687 protocol);
c46ee386
AAJ		 1688
1689 if (dev->poll_mod_count) {
6ca55372
WR		 1690 nfc_dev_err(&dev->interface->dev,
1691 "Cannot activate while polling");
c46ee386
AAJ		 1692 return -EBUSY;
1693 }
1694
1695 if (dev->tgt_active_prot) {
6ca55372
WR		 1696 nfc_dev_err(&dev->interface->dev,
1697 "There is already an active target");
c46ee386
AAJ		 1698 return -EBUSY;
1699 }
1700
1701 if (!dev->tgt_available_prots) {
6ca55372
WR		 1702 nfc_dev_err(&dev->interface->dev,
1703 "There is no available target to activate");
c46ee386
AAJ		 1704 return -EINVAL;
1705 }
1706
1707 if (!(dev->tgt_available_prots & (1 << protocol))) {
6ca55372
WR		 1708 nfc_dev_err(&dev->interface->dev,
1709 "Target doesn't support requested proto %u",
1710 protocol);
c46ee386
AAJ		 1711 return -EINVAL;
1712 }
1713
1714 if (protocol == NFC_PROTO_NFC_DEP) {
1715 rc = pn533_activate_target_nfcdep(dev);
1716 if (rc) {
6ca55372
WR		 1717 nfc_dev_err(&dev->interface->dev,
1718 "Activating target with DEP failed %d", rc);
c46ee386
AAJ		 1719 return rc;
1720 }
1721 }
1722
1723 dev->tgt_active_prot = protocol;
1724 dev->tgt_available_prots = 0;
1725
1726 return 0;
1727}
1728
90099433
EL		 1729static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
1730 struct nfc_target *target)
c46ee386
AAJ		 1731{
1732 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
cb950d93
WR		 1733
1734 struct sk_buff *skb;
1735 struct sk_buff *resp;
1736
c46ee386
AAJ		 1737 int rc;
1738
1739 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1740
1741 if (!dev->tgt_active_prot) {
1742 nfc_dev_err(&dev->interface->dev, "There is no active target");
1743 return;
1744 }
1745
1746 dev->tgt_active_prot = 0;
6ff73fd2
SO		 1747 skb_queue_purge(&dev->resp_q);
1748
cb950d93
WR		 1749 skb = pn533_alloc_skb(sizeof(u8));
1750 if (!skb)
1751 return;
c46ee386 1752
cb950d93 1753 *skb_put(skb, 1) = 1; /* TG*/
c46ee386 1754
cb950d93
WR		 1755 resp = pn533_send_cmd_sync(dev, PN533_CMD_IN_RELEASE, skb);
1756 if (IS_ERR(resp))
c46ee386 1757 return;
c46ee386 1758
cb950d93 1759 rc = resp->data[0] & PN533_CMD_RET_MASK;
c46ee386 1760 if (rc != PN533_CMD_RET_SUCCESS)
6ca55372
WR		 1761 nfc_dev_err(&dev->interface->dev,
1762 "Error 0x%x when releasing the target", rc);
c46ee386 1763
cb950d93 1764 dev_kfree_skb(resp);
c46ee386
AAJ		 1765 return;
1766}
1767
361f3cb7
SO		 1768
1769static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
13003649 1770 struct sk_buff *resp)
361f3cb7 1771{
13003649 1772 struct pn533_cmd_jump_dep_response *rsp;
361f3cb7
SO		 1773 u8 target_gt_len;
1774 int rc;
13003649 1775 u8 active = *(u8 *)arg;
70418e6e
WR		 1776
1777 kfree(arg);
361f3cb7 1778
13003649
WR		 1779 if (IS_ERR(resp))
1780 return PTR_ERR(resp);
361f3cb7
SO		 1781
1782 if (dev->tgt_available_prots &&
1783 !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) {
1784 nfc_dev_err(&dev->interface->dev,
5d467742 1785 "The target does not support DEP");
13003649
WR		 1786 rc = -EINVAL;
1787 goto error;
361f3cb7
SO		 1788 }
1789
13003649
WR		 1790 rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
1791
1792 rc = rsp->status & PN533_CMD_RET_MASK;
361f3cb7
SO		 1793 if (rc != PN533_CMD_RET_SUCCESS) {
1794 nfc_dev_err(&dev->interface->dev,
5d467742 1795 "Bringing DEP link up failed %d", rc);
13003649 1796 goto error;
361f3cb7
SO		 1797 }
1798
1799 if (!dev->tgt_available_prots) {
13003649
WR		 1800 struct nfc_target nfc_target;
1801
361f3cb7
SO		 1802 nfc_dev_dbg(&dev->interface->dev, "Creating new target");
1803
1804 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
2fbabfa4 1805 nfc_target.nfcid1_len = 10;
13003649 1806 memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
361f3cb7
SO		 1807 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1808 if (rc)
13003649 1809 goto error;
361f3cb7
SO		 1810
1811 dev->tgt_available_prots = 0;
1812 }
1813
1814 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1815
1816 /* ATR_RES general bytes are located at offset 17 */
13003649 1817 target_gt_len = resp->len - 17;
361f3cb7 1818 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
13003649 1819 rsp->gt, target_gt_len);
361f3cb7
SO		 1820 if (rc == 0)
1821 rc = nfc_dep_link_is_up(dev->nfc_dev,
13003649
WR		 1822 dev->nfc_dev->targets[0].idx,
1823 !active, NFC_RF_INITIATOR);
361f3cb7 1824
13003649
WR		 1825error:
1826 dev_kfree_skb(resp);
1827 return rc;
361f3cb7
SO		 1828}
1829
41a8ec49
SO		 1830static int pn533_mod_to_baud(struct pn533 *dev)
1831{
1832 switch (dev->poll_mod_curr) {
1833 case PN533_POLL_MOD_106KBPS_A:
1834 return 0;
1835 case PN533_POLL_MOD_212KBPS_FELICA:
1836 return 1;
1837 case PN533_POLL_MOD_424KBPS_FELICA:
1838 return 2;
1839 default:
1840 return -EINVAL;
1841 }
1842}
1843
d7f3345d 1844#define PASSIVE_DATA_LEN 5
90099433 1845static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
37cf4fc6 1846 u8 comm_mode, u8 *gb, size_t gb_len)
361f3cb7
SO		 1847{
1848 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
13003649
WR		 1849 struct sk_buff *skb;
1850 int rc, baud, skb_len;
1851 u8 *next, *arg;
1852
d7f3345d 1853 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
361f3cb7
SO		 1854
1855 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1856
361f3cb7
SO		 1857 if (dev->poll_mod_count) {
1858 nfc_dev_err(&dev->interface->dev,
5d467742 1859 "Cannot bring the DEP link up while polling");
361f3cb7
SO		 1860 return -EBUSY;
1861 }
1862
1863 if (dev->tgt_active_prot) {
1864 nfc_dev_err(&dev->interface->dev,
5d467742 1865 "There is already an active target");
361f3cb7
SO		 1866 return -EBUSY;
1867 }
1868
41a8ec49
SO		 1869 baud = pn533_mod_to_baud(dev);
1870 if (baud < 0) {
1871 nfc_dev_err(&dev->interface->dev,
1872 "Invalid curr modulation %d", dev->poll_mod_curr);
1873 return baud;
1874 }
1875
13003649 1876 skb_len = 3 + gb_len; /* ActPass + BR + Next */
d7f3345d 1877 if (comm_mode == NFC_COMM_PASSIVE)
13003649 1878 skb_len += PASSIVE_DATA_LEN;
d7f3345d 1879
13003649
WR		 1880 skb = pn533_alloc_skb(skb_len);
1881 if (!skb)
361f3cb7
SO		 1882 return -ENOMEM;
1883
13003649
WR		 1884 *skb_put(skb, 1) = !comm_mode; /* ActPass */
1885 *skb_put(skb, 1) = baud; /* Baud rate */
1886
1887 next = skb_put(skb, 1); /* Next */
1888 *next = 0;
361f3cb7 1889
13003649
WR		 1890 if (comm_mode == NFC_COMM_PASSIVE && baud > 0) {
1891 memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data,
1892 PASSIVE_DATA_LEN);
1893 *next |= 1;
d7f3345d
SO		 1894 }
1895
47807d3d 1896 if (gb != NULL && gb_len > 0) {
13003649
WR		 1897 memcpy(skb_put(skb, gb_len), gb, gb_len);
1898 *next |= 4; /* We have some Gi */
361f3cb7 1899 } else {
13003649 1900 *next = 0;
361f3cb7
SO		 1901 }
1902
13003649
WR		 1903 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
1904 if (!arg) {
1905 dev_kfree_skb(skb);
1906 return -ENOMEM;
1907 }
361f3cb7 1908
13003649 1909 *arg = !comm_mode;
361f3cb7 1910
13003649
WR		 1911 rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb,
1912 pn533_in_dep_link_up_complete, arg);
1913
1914 if (rc < 0) {
1915 dev_kfree_skb(skb);
1916 kfree(arg);
1917 }
361f3cb7
SO		 1918
1919 return rc;
1920}
1921
1922static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
1923{
6fbbdc16
SO		 1924 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1925
fcfafc76
WR		 1926 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1927
6fbbdc16
SO		 1928 pn533_poll_reset_mod_list(dev);
1929
51ad304c
SO		 1930 if (dev->tgt_mode || dev->tgt_active_prot) {
1931 pn533_send_ack(dev, GFP_KERNEL);
1932 usb_kill_urb(dev->in_urb);
1933 }
1934
1935 dev->tgt_active_prot = 0;
1936 dev->tgt_mode = 0;
1937
1938 skb_queue_purge(&dev->resp_q);
361f3cb7
SO		 1939
1940 return 0;
1941}
1942
c46ee386 1943struct pn533_data_exchange_arg {
c46ee386
AAJ		 1944 data_exchange_cb_t cb;
1945 void *cb_context;
1946};
1947
6ff73fd2
SO		 1948static struct sk_buff *pn533_build_response(struct pn533 *dev)
1949{
1950 struct sk_buff *skb, *tmp, *t;
1951 unsigned int skb_len = 0, tmp_len = 0;
1952
fcfafc76 1953 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
6ff73fd2
SO		 1954
1955 if (skb_queue_empty(&dev->resp_q))
1956 return NULL;
1957
1958 if (skb_queue_len(&dev->resp_q) == 1) {
1959 skb = skb_dequeue(&dev->resp_q);
1960 goto out;
1961 }
1962
1963 skb_queue_walk_safe(&dev->resp_q, tmp, t)
1964 skb_len += tmp->len;
1965
1966 nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n",
1967 __func__, skb_len);
1968
1969 skb = alloc_skb(skb_len, GFP_KERNEL);
1970 if (skb == NULL)
1971 goto out;
1972
1973 skb_put(skb, skb_len);
1974
1975 skb_queue_walk_safe(&dev->resp_q, tmp, t) {
1976 memcpy(skb->data + tmp_len, tmp->data, tmp->len);
1977 tmp_len += tmp->len;
1978 }
1979
1980out:
1981 skb_queue_purge(&dev->resp_q);
1982
1983 return skb;
1984}
1985
c46ee386 1986static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
b1e666f5 1987 struct sk_buff *resp)
c46ee386
AAJ		 1988{
1989 struct pn533_data_exchange_arg *arg = _arg;
b1e666f5
WR		 1990 struct sk_buff *skb;
1991 int rc = 0;
1992 u8 status, ret, mi;
c46ee386
AAJ		 1993
1994 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1995
b1e666f5
WR		 1996 if (IS_ERR(resp)) {
1997 rc = PTR_ERR(resp);
1998 goto _error;
c46ee386
AAJ		 1999 }
2000
b1e666f5
WR		 2001 status = resp->data[0];
2002 ret = status & PN533_CMD_RET_MASK;
2003 mi = status & PN533_CMD_MI_MASK;
2004
2005 skb_pull(resp, sizeof(status));
c46ee386 2006
b1e666f5
WR		 2007 if (ret != PN533_CMD_RET_SUCCESS) {
2008 nfc_dev_err(&dev->interface->dev,
2009 "PN533 reported error %d when exchanging data",
2010 ret);
2011 rc = -EIO;
c46ee386
AAJ		 2012 goto error;
2013 }
2014
b1e666f5 2015 skb_queue_tail(&dev->resp_q, resp);
6ff73fd2 2016
b1e666f5
WR		 2017 if (mi) {
2018 dev->cmd_complete_mi_arg = arg;
6ff73fd2
SO		 2019 queue_work(dev->wq, &dev->mi_work);
2020 return -EINPROGRESS;
c46ee386
AAJ		 2021 }
2022
6ff73fd2 2023 skb = pn533_build_response(dev);
b1e666f5 2024 if (!skb)
6ff73fd2 2025 goto error;
c46ee386 2026
6ff73fd2 2027 arg->cb(arg->cb_context, skb, 0);
c46ee386
AAJ		 2028 kfree(arg);
2029 return 0;
2030
2031error:
b1e666f5
WR		 2032 dev_kfree_skb(resp);
2033_error:
6ff73fd2 2034 skb_queue_purge(&dev->resp_q);
b1e666f5 2035 arg->cb(arg->cb_context, NULL, rc);
c46ee386 2036 kfree(arg);
b1e666f5 2037 return rc;
c46ee386
AAJ		 2038}
2039
be9ae4ce
SO		 2040static int pn533_transceive(struct nfc_dev *nfc_dev,
2041 struct nfc_target *target, struct sk_buff *skb,
2042 data_exchange_cb_t cb, void *cb_context)
c46ee386
AAJ		 2043{
2044 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
b1e666f5 2045 struct pn533_data_exchange_arg *arg = NULL;
c46ee386
AAJ		 2046 int rc;
2047
2048 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2049
b1e666f5
WR		 2050 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
2051 /* TODO: Implement support to multi-part data exchange */
2052 nfc_dev_err(&dev->interface->dev,
2053 "Data length greater than the max allowed: %d",
2054 PN533_CMD_DATAEXCH_DATA_MAXLEN);
2055 rc = -ENOSYS;
2056 goto error;
2057 }
2058
c46ee386 2059 if (!dev->tgt_active_prot) {
6ca55372
WR		 2060 nfc_dev_err(&dev->interface->dev,
2061 "Can't exchange data if there is no active target");
c46ee386
AAJ		 2062 rc = -EINVAL;
2063 goto error;
2064 }
2065
b1e666f5 2066 arg = kmalloc(sizeof(*arg), GFP_KERNEL);
c46ee386
AAJ		 2067 if (!arg) {
2068 rc = -ENOMEM;
b1e666f5 2069 goto error;
c46ee386
AAJ		 2070 }
2071
c46ee386
AAJ		 2072 arg->cb = cb;
2073 arg->cb_context = cb_context;
2074
b1e666f5
WR		 2075 switch (dev->device_type) {
2076 case PN533_DEVICE_PASORI:
2077 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2078 rc = pn533_send_data_async(dev, PN533_CMD_IN_COMM_THRU,
2079 skb,
2080 pn533_data_exchange_complete,
2081 arg);
2082
2083 break;
2084 }
2085 default:
2086 *skb_push(skb, sizeof(u8)) = 1; /*TG*/
2087
2088 rc = pn533_send_data_async(dev, PN533_CMD_IN_DATA_EXCHANGE,
2089 skb, pn533_data_exchange_complete,
2090 arg);
2091
2092 break;
c46ee386
AAJ		 2093 }
2094
b1e666f5
WR		 2095 if (rc < 0) /* rc from send_async */
2096 goto error;
2097
c46ee386
AAJ		 2098 return 0;
2099
c46ee386 2100error:
b1e666f5
WR		 2101 kfree(arg);
2102 dev_kfree_skb(skb);
c46ee386
AAJ		 2103 return rc;
2104}
2105
dadb06f2 2106static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
e4878823 2107 struct sk_buff *resp)
dadb06f2 2108{
e4878823 2109 u8 status;
5b412fd1 2110
dadb06f2
SO		 2111 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2112
e4878823
WR		 2113 if (IS_ERR(resp))
2114 return PTR_ERR(resp);
5b412fd1 2115
e4878823 2116 status = resp->data[0];
dadb06f2 2117
e4878823 2118 dev_kfree_skb(resp);
dadb06f2 2119
e4878823 2120 if (status != 0) {
dadb06f2
SO		 2121 nfc_tm_deactivated(dev->nfc_dev);
2122
51ad304c
SO		 2123 dev->tgt_mode = 0;
2124
dadb06f2
SO		 2125 return 0;
2126 }
2127
2128 queue_work(dev->wq, &dev->tg_work);
2129
2130 return 0;
2131}
2132
2133static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
2134{
2135 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
dadb06f2
SO		 2136 int rc;
2137
2138 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2139
e4878823 2140 if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
dadb06f2 2141 nfc_dev_err(&dev->interface->dev,
e4878823
WR		 2142 "Data length greater than the max allowed: %d",
2143 PN533_CMD_DATAEXCH_DATA_MAXLEN);
2144 return -ENOSYS;
dadb06f2
SO		 2145 }
2146
e4878823
WR		 2147 rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,
2148 pn533_tm_send_complete, NULL);
2149 if (rc < 0)
2150 dev_kfree_skb(skb);
dadb06f2
SO		 2151
2152 return rc;
2153}
2154
6ff73fd2
SO		 2155static void pn533_wq_mi_recv(struct work_struct *work)
2156{
2157 struct pn533 *dev = container_of(work, struct pn533, mi_work);
b1e666f5
WR		 2158
2159 struct sk_buff *skb;
6ff73fd2
SO		 2160 int rc;
2161
2162 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2163
b1e666f5
WR		 2164 skb = pn533_alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN);
2165 if (!skb)
2166 goto error;
6ff73fd2 2167
b1e666f5
WR		 2168 switch (dev->device_type) {
2169 case PN533_DEVICE_PASORI:
2170 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
2171 rc = pn533_send_cmd_direct_async(dev,
2172 PN533_CMD_IN_COMM_THRU,
2173 skb,
2174 pn533_data_exchange_complete,
2175 dev->cmd_complete_mi_arg);
6ff73fd2 2176
b1e666f5
WR		 2177 break;
2178 }
2179 default:
2180 *skb_put(skb, sizeof(u8)) = 1; /*TG*/
6ff73fd2 2181
b1e666f5
WR		 2182 rc = pn533_send_cmd_direct_async(dev,
2183 PN533_CMD_IN_DATA_EXCHANGE,
2184 skb,
2185 pn533_data_exchange_complete,
2186 dev->cmd_complete_mi_arg);
b1bb290a 2187
b1e666f5 2188 break;
6ff73fd2
SO		 2189 }
2190
b1e666f5 2191 if (rc == 0) /* success */
6ff73fd2
SO		 2192 return;
2193
b1e666f5
WR		 2194 nfc_dev_err(&dev->interface->dev,
2195 "Error %d when trying to perform data_exchange", rc);
6ff73fd2 2196
b1e666f5
WR		 2197 dev_kfree_skb(skb);
2198 kfree(dev->cmd_complete_arg);
6ff73fd2 2199
b1e666f5 2200error:
6ff73fd2 2201 pn533_send_ack(dev, GFP_KERNEL);
5d50b364 2202 queue_work(dev->wq, &dev->cmd_work);
6ff73fd2
SO		 2203}
2204
c46ee386
AAJ		 2205static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
2206 u8 cfgdata_len)
2207{
cb950d93
WR		 2208 struct sk_buff *skb;
2209 struct sk_buff *resp;
2210
2211 int skb_len;
c46ee386
AAJ		 2212
2213 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2214
cb950d93 2215 skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */
c46ee386 2216
cb950d93
WR		 2217 skb = pn533_alloc_skb(skb_len);
2218 if (!skb)
2219 return -ENOMEM;
c46ee386 2220
cb950d93
WR		 2221 *skb_put(skb, sizeof(cfgitem)) = cfgitem;
2222 memcpy(skb_put(skb, cfgdata_len), cfgdata, cfgdata_len);
c46ee386 2223
cb950d93
WR		 2224 resp = pn533_send_cmd_sync(dev, PN533_CMD_RF_CONFIGURATION, skb);
2225 if (IS_ERR(resp))
2226 return PTR_ERR(resp);
c46ee386 2227
cb950d93
WR		 2228 dev_kfree_skb(resp);
2229 return 0;
2230}
2231
2232static int pn533_get_firmware_version(struct pn533 *dev,
2233 struct pn533_fw_version *fv)
2234{
2235 struct sk_buff *skb;
2236 struct sk_buff *resp;
2237
2238 skb = pn533_alloc_skb(0);
2239 if (!skb)
2240 return -ENOMEM;
2241
2242 resp = pn533_send_cmd_sync(dev, PN533_CMD_GET_FIRMWARE_VERSION, skb);
2243 if (IS_ERR(resp))
2244 return PTR_ERR(resp);
2245
2246 fv->ic = resp->data[0];
2247 fv->ver = resp->data[1];
2248 fv->rev = resp->data[2];
2249 fv->support = resp->data[3];
2250
2251 dev_kfree_skb(resp);
2252 return 0;
c46ee386
AAJ		 2253}
2254
5c7b0531
SO		 2255static int pn533_fw_reset(struct pn533 *dev)
2256{
cb950d93
WR		 2257 struct sk_buff *skb;
2258 struct sk_buff *resp;
5c7b0531
SO		 2259
2260 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2261
cb950d93
WR		 2262 skb = pn533_alloc_skb(sizeof(u8));
2263 if (!skb)
2264 return -ENOMEM;
5c7b0531 2265
cb950d93 2266 *skb_put(skb, sizeof(u8)) = 0x1;
5c7b0531 2267
cb950d93
WR		 2268 resp = pn533_send_cmd_sync(dev, 0x18, skb);
2269 if (IS_ERR(resp))
2270 return PTR_ERR(resp);
5c7b0531 2271
cb950d93 2272 dev_kfree_skb(resp);
5c7b0531 2273
94c5c156 2274 return 0;
5c7b0531
SO		 2275}
2276
2277static struct nfc_ops pn533_nfc_ops = {
8b3fe7b5
IE		 2278 .dev_up = NULL,
2279 .dev_down = NULL,
361f3cb7
SO		 2280 .dep_link_up = pn533_dep_link_up,
2281 .dep_link_down = pn533_dep_link_down,
c46ee386
AAJ		 2282 .start_poll = pn533_start_poll,
2283 .stop_poll = pn533_stop_poll,
2284 .activate_target = pn533_activate_target,
2285 .deactivate_target = pn533_deactivate_target,
be9ae4ce 2286 .im_transceive = pn533_transceive,
dadb06f2 2287 .tm_send = pn533_tm_send,
c46ee386
AAJ		 2288};
2289
5c7b0531
SO		 2290static int pn533_setup(struct pn533 *dev)
2291{
2292 struct pn533_config_max_retries max_retries;
2293 struct pn533_config_timing timing;
2294 u8 pasori_cfg[3] = {0x08, 0x01, 0x08};
2295 int rc;
2296
2297 switch (dev->device_type) {
2298 case PN533_DEVICE_STD:
2299 max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS;
2300 max_retries.mx_rty_psl = 2;
2301 max_retries.mx_rty_passive_act =
2302 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2303
2304 timing.rfu = PN533_CONFIG_TIMING_102;
2305 timing.atr_res_timeout = PN533_CONFIG_TIMING_204;
2306 timing.dep_timeout = PN533_CONFIG_TIMING_409;
2307
2308 break;
2309
2310 case PN533_DEVICE_PASORI:
2311 max_retries.mx_rty_atr = 0x2;
2312 max_retries.mx_rty_psl = 0x1;
2313 max_retries.mx_rty_passive_act =
2314 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2315
2316 timing.rfu = PN533_CONFIG_TIMING_102;
2317 timing.atr_res_timeout = PN533_CONFIG_TIMING_102;
2318 timing.dep_timeout = PN533_CONFIG_TIMING_204;
2319
2320 break;
2321
2322 default:
2323 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2324 dev->device_type);
2325 return -EINVAL;
2326 }
2327
2328 rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES,
2329 (u8 *)&max_retries, sizeof(max_retries));
2330 if (rc) {
2331 nfc_dev_err(&dev->interface->dev,
2332 "Error on setting MAX_RETRIES config");
2333 return rc;
2334 }
2335
2336
2337 rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING,
2338 (u8 *)&timing, sizeof(timing));
2339 if (rc) {
2340 nfc_dev_err(&dev->interface->dev,
2341 "Error on setting RF timings");
2342 return rc;
2343 }
2344
2345 switch (dev->device_type) {
2346 case PN533_DEVICE_STD:
2347 break;
2348
2349 case PN533_DEVICE_PASORI:
2350 pn533_fw_reset(dev);
2351
2352 rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
2353 pasori_cfg, 3);
2354 if (rc) {
2355 nfc_dev_err(&dev->interface->dev,
2356 "Error while settings PASORI config");
2357 return rc;
2358 }
2359
2360 pn533_fw_reset(dev);
2361
2362 break;
2363 }
2364
2365 return 0;
2366}
2367
c46ee386
AAJ		 2368static int pn533_probe(struct usb_interface *interface,
2369 const struct usb_device_id *id)
2370{
cb950d93 2371 struct pn533_fw_version fw_ver;
c46ee386
AAJ		 2372 struct pn533 *dev;
2373 struct usb_host_interface *iface_desc;
2374 struct usb_endpoint_descriptor *endpoint;
c46ee386
AAJ		 2375 int in_endpoint = 0;
2376 int out_endpoint = 0;
2377 int rc = -ENOMEM;
2378 int i;
2379 u32 protocols;
2380
2381 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2382 if (!dev)
2383 return -ENOMEM;
2384
2385 dev->udev = usb_get_dev(interface_to_usbdev(interface));
2386 dev->interface = interface;
0201ed03 2387 mutex_init(&dev->cmd_lock);
c46ee386
AAJ		 2388
2389 iface_desc = interface->cur_altsetting;
2390 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
2391 endpoint = &iface_desc->endpoint[i].desc;
2392
8d25ca79 2393 if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint))
c46ee386 2394 in_endpoint = endpoint->bEndpointAddress;
c46ee386 2395
8d25ca79 2396 if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint))
c46ee386 2397 out_endpoint = endpoint->bEndpointAddress;
c46ee386
AAJ		 2398 }
2399
2400 if (!in_endpoint || !out_endpoint) {
6ca55372
WR		 2401 nfc_dev_err(&interface->dev,
2402 "Could not find bulk-in or bulk-out endpoint");
c46ee386
AAJ		 2403 rc = -ENODEV;
2404 goto error;
2405 }
2406
c46ee386 2407 dev->in_urb = usb_alloc_urb(0, GFP_KERNEL);
c46ee386
AAJ		 2408 dev->out_urb = usb_alloc_urb(0, GFP_KERNEL);
2409
a5798094 2410 if (!dev->in_urb || !dev->out_urb)
c46ee386
AAJ		 2411 goto error;
2412
2413 usb_fill_bulk_urb(dev->in_urb, dev->udev,
5d467742
WR		 2414 usb_rcvbulkpipe(dev->udev, in_endpoint),
2415 NULL, 0, NULL, dev);
c46ee386 2416 usb_fill_bulk_urb(dev->out_urb, dev->udev,
5d467742
WR		 2417 usb_sndbulkpipe(dev->udev, out_endpoint),
2418 NULL, 0, pn533_send_complete, dev);
c46ee386 2419
5d50b364
SO		 2420 INIT_WORK(&dev->cmd_work, pn533_wq_cmd);
2421 INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete);
6ff73fd2 2422 INIT_WORK(&dev->mi_work, pn533_wq_mi_recv);
103b34cf 2423 INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data);
6fbbdc16 2424 INIT_WORK(&dev->poll_work, pn533_wq_poll);
58637c9b 2425 dev->wq = alloc_ordered_workqueue("pn533", 0);
4849f85e
SO		 2426 if (dev->wq == NULL)
2427 goto error;
c46ee386 2428
6fbbdc16
SO		 2429 init_timer(&dev->listen_timer);
2430 dev->listen_timer.data = (unsigned long) dev;
2431 dev->listen_timer.function = pn533_listen_mode_timer;
2432
6ff73fd2
SO		 2433 skb_queue_head_init(&dev->resp_q);
2434
5d50b364
SO		 2435 INIT_LIST_HEAD(&dev->cmd_queue);
2436
c46ee386
AAJ		 2437 usb_set_intfdata(interface, dev);
2438
cb950d93
WR		 2439 memset(&fw_ver, 0, sizeof(fw_ver));
2440 rc = pn533_get_firmware_version(dev, &fw_ver);
2441 if (rc < 0)
4849f85e 2442 goto destroy_wq;
c46ee386 2443
cb950d93
WR		 2444 nfc_dev_info(&dev->interface->dev,
2445 "NXP PN533 firmware ver %d.%d now attached",
2446 fw_ver.ver, fw_ver.rev);
c46ee386 2447
5c7b0531
SO		 2448 dev->device_type = id->driver_info;
2449 switch (dev->device_type) {
2450 case PN533_DEVICE_STD:
2451 protocols = PN533_ALL_PROTOCOLS;
2452 break;
2453
2454 case PN533_DEVICE_PASORI:
2455 protocols = PN533_NO_TYPE_B_PROTOCOLS;
2456 break;
2457
2458 default:
2459 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2460 dev->device_type);
2461 rc = -EINVAL;
2462 goto destroy_wq;
2463 }
c46ee386 2464
e8753043 2465 dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
b1bb290a 2466 PN533_FRAME_HEADER_LEN +
e8753043 2467 PN533_CMD_DATAEXCH_HEAD_LEN,
b1bb290a 2468 PN533_FRAME_TAIL_LEN);
c46ee386 2469 if (!dev->nfc_dev)
4849f85e 2470 goto destroy_wq;
c46ee386
AAJ		 2471
2472 nfc_set_parent_dev(dev->nfc_dev, &interface->dev);
2473 nfc_set_drvdata(dev->nfc_dev, dev);
2474
2475 rc = nfc_register_device(dev->nfc_dev);
2476 if (rc)
2477 goto free_nfc_dev;
2478
5c7b0531
SO		 2479 rc = pn533_setup(dev);
2480 if (rc)
34a85bfc 2481 goto unregister_nfc_dev;
34a85bfc 2482
c46ee386
AAJ		 2483 return 0;
2484
9f2f8ba1
SO		 2485unregister_nfc_dev:
2486 nfc_unregister_device(dev->nfc_dev);
2487
c46ee386
AAJ		 2488free_nfc_dev:
2489 nfc_free_device(dev->nfc_dev);
9f2f8ba1 2490
4849f85e
SO		 2491destroy_wq:
2492 destroy_workqueue(dev->wq);
c46ee386 2493error:
c46ee386 2494 usb_free_urb(dev->in_urb);
c46ee386
AAJ		 2495 usb_free_urb(dev->out_urb);
2496 kfree(dev);
2497 return rc;
2498}
2499
2500static void pn533_disconnect(struct usb_interface *interface)
2501{
2502 struct pn533 *dev;
5d50b364 2503 struct pn533_cmd *cmd, *n;
c46ee386
AAJ		 2504
2505 dev = usb_get_intfdata(interface);
2506 usb_set_intfdata(interface, NULL);
2507
2508 nfc_unregister_device(dev->nfc_dev);
2509 nfc_free_device(dev->nfc_dev);
2510
2511 usb_kill_urb(dev->in_urb);
2512 usb_kill_urb(dev->out_urb);
2513
4849f85e 2514 destroy_workqueue(dev->wq);
c46ee386 2515
6ff73fd2
SO		 2516 skb_queue_purge(&dev->resp_q);
2517
6fbbdc16
SO		 2518 del_timer(&dev->listen_timer);
2519
5d50b364
SO		 2520 list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) {
2521 list_del(&cmd->queue);
2522 kfree(cmd);
2523 }
2524
c46ee386 2525 usb_free_urb(dev->in_urb);
c46ee386
AAJ		 2526 usb_free_urb(dev->out_urb);
2527 kfree(dev);
2528
276556db 2529 nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected");
c46ee386
AAJ		 2530}
2531
2532static struct usb_driver pn533_driver = {
2533 .name = "pn533",
2534 .probe = pn533_probe,
2535 .disconnect = pn533_disconnect,
2536 .id_table = pn533_table,
2537};
2538
fe748483 2539module_usb_driver(pn533_driver);
c46ee386
AAJ		 2540
2541MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>,"
2542 " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
2543MODULE_DESCRIPTION("PN533 usb driver ver " VERSION);
2544MODULE_VERSION(VERSION);
2545MODULE_LICENSE("GPL");
Linux 6.x block layer and io_uring tree(s)