2 * Copyright (C) 2011 Instituto Nokia de Tecnologia
3 * Copyright (C) 2012-2013 Tieto Poland
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 2 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the
17 * Free Software Foundation, Inc.,
18 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include <linux/device.h>
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/slab.h>
25 #include <linux/usb.h>
26 #include <linux/nfc.h>
27 #include <linux/netdevice.h>
28 #include <net/nfc/nfc.h>
32 #define PN533_VENDOR_ID 0x4CC
33 #define PN533_PRODUCT_ID 0x2533
35 #define SCM_VENDOR_ID 0x4E6
36 #define SCL3711_PRODUCT_ID 0x5591
38 #define SONY_VENDOR_ID 0x054c
39 #define PASORI_PRODUCT_ID 0x02e1
41 #define ACS_VENDOR_ID 0x072f
42 #define ACR122U_PRODUCT_ID 0x2200
44 #define PN533_DEVICE_STD 0x1
45 #define PN533_DEVICE_PASORI 0x2
46 #define PN533_DEVICE_ACR122U 0x3
48 #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\
49 NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\
50 NFC_PROTO_NFC_DEP_MASK |\
51 NFC_PROTO_ISO14443_B_MASK)
53 #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \
54 NFC_PROTO_MIFARE_MASK | \
55 NFC_PROTO_FELICA_MASK | \
56 NFC_PROTO_ISO14443_MASK | \
57 NFC_PROTO_NFC_DEP_MASK)
59 static const struct usb_device_id pn533_table
[] = {
60 { .match_flags
= USB_DEVICE_ID_MATCH_DEVICE
,
61 .idVendor
= PN533_VENDOR_ID
,
62 .idProduct
= PN533_PRODUCT_ID
,
63 .driver_info
= PN533_DEVICE_STD
,
65 { .match_flags
= USB_DEVICE_ID_MATCH_DEVICE
,
66 .idVendor
= SCM_VENDOR_ID
,
67 .idProduct
= SCL3711_PRODUCT_ID
,
68 .driver_info
= PN533_DEVICE_STD
,
70 { .match_flags
= USB_DEVICE_ID_MATCH_DEVICE
,
71 .idVendor
= SONY_VENDOR_ID
,
72 .idProduct
= PASORI_PRODUCT_ID
,
73 .driver_info
= PN533_DEVICE_PASORI
,
75 { .match_flags
= USB_DEVICE_ID_MATCH_DEVICE
,
76 .idVendor
= ACS_VENDOR_ID
,
77 .idProduct
= ACR122U_PRODUCT_ID
,
78 .driver_info
= PN533_DEVICE_ACR122U
,
82 MODULE_DEVICE_TABLE(usb
, pn533_table
);
84 /* How much time we spend listening for initiators */
85 #define PN533_LISTEN_TIME 2
87 /* Standard pn533 frame definitions */
88 #define PN533_STD_FRAME_HEADER_LEN (sizeof(struct pn533_std_frame) \
89 + 2) /* data[0] TFI, data[1] CC */
90 #define PN533_STD_FRAME_TAIL_LEN 2 /* data[len] DCS, data[len + 1] postamble*/
93 * Max extended frame payload len, excluding TFI and CC
94 * which are already in PN533_FRAME_HEADER_LEN.
96 #define PN533_STD_FRAME_MAX_PAYLOAD_LEN 263
98 #define PN533_STD_FRAME_ACK_SIZE 6 /* Preamble (1), SoPC (2), ACK Code (2),
100 #define PN533_STD_FRAME_CHECKSUM(f) (f->data[f->datalen])
101 #define PN533_STD_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1])
104 #define PN533_STD_FRAME_SOF 0x00FF
106 /* standard frame identifier: in/out/error */
107 #define PN533_STD_FRAME_IDENTIFIER(f) (f->data[0]) /* TFI */
108 #define PN533_STD_FRAME_DIR_OUT 0xD4
109 #define PN533_STD_FRAME_DIR_IN 0xD5
111 /* ACS ACR122 pn533 frame definitions */
112 #define PN533_ACR122_TX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_tx_frame) \
114 #define PN533_ACR122_TX_FRAME_TAIL_LEN 0
115 #define PN533_ACR122_RX_FRAME_HEADER_LEN (sizeof(struct pn533_acr122_rx_frame) \
117 #define PN533_ACR122_RX_FRAME_TAIL_LEN 2
118 #define PN533_ACR122_FRAME_MAX_PAYLOAD_LEN PN533_STD_FRAME_MAX_PAYLOAD_LEN
120 /* CCID messages types */
121 #define PN533_ACR122_PC_TO_RDR_ICCPOWERON 0x62
122 #define PN533_ACR122_PC_TO_RDR_ESCAPE 0x6B
124 #define PN533_ACR122_RDR_TO_PC_ESCAPE 0x83
127 #define PN533_STD_FRAME_CMD(f) (f->data[1])
129 #define PN533_CMD_GET_FIRMWARE_VERSION 0x02
130 #define PN533_CMD_RF_CONFIGURATION 0x32
131 #define PN533_CMD_IN_DATA_EXCHANGE 0x40
132 #define PN533_CMD_IN_COMM_THRU 0x42
133 #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A
134 #define PN533_CMD_IN_ATR 0x50
135 #define PN533_CMD_IN_RELEASE 0x52
136 #define PN533_CMD_IN_JUMP_FOR_DEP 0x56
138 #define PN533_CMD_TG_INIT_AS_TARGET 0x8c
139 #define PN533_CMD_TG_GET_DATA 0x86
140 #define PN533_CMD_TG_SET_DATA 0x8e
141 #define PN533_CMD_UNDEF 0xff
143 #define PN533_CMD_RESPONSE(cmd) (cmd + 1)
145 /* PN533 Return codes */
146 #define PN533_CMD_RET_MASK 0x3F
147 #define PN533_CMD_MI_MASK 0x40
148 #define PN533_CMD_RET_SUCCESS 0x00
152 typedef int (*pn533_cmd_complete_t
) (struct pn533
*dev
, void *arg
, int status
);
154 typedef int (*pn533_send_async_complete_t
) (struct pn533
*dev
, void *arg
,
155 struct sk_buff
*resp
);
157 /* structs for pn533 commands */
159 /* PN533_CMD_GET_FIRMWARE_VERSION */
160 struct pn533_fw_version
{
167 /* PN533_CMD_RF_CONFIGURATION */
168 #define PN533_CFGITEM_TIMING 0x02
169 #define PN533_CFGITEM_MAX_RETRIES 0x05
170 #define PN533_CFGITEM_PASORI 0x82
172 #define PN533_CONFIG_TIMING_102 0xb
173 #define PN533_CONFIG_TIMING_204 0xc
174 #define PN533_CONFIG_TIMING_409 0xd
175 #define PN533_CONFIG_TIMING_819 0xe
177 #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00
178 #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF
180 struct pn533_config_max_retries
{
183 u8 mx_rty_passive_act
;
186 struct pn533_config_timing
{
192 /* PN533_CMD_IN_LIST_PASSIVE_TARGET */
194 /* felica commands opcode */
195 #define PN533_FELICA_OPC_SENSF_REQ 0
196 #define PN533_FELICA_OPC_SENSF_RES 1
197 /* felica SENSF_REQ parameters */
198 #define PN533_FELICA_SENSF_SC_ALL 0xFFFF
199 #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0
200 #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1
201 #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2
203 /* type B initiator_data values */
204 #define PN533_TYPE_B_AFI_ALL_FAMILIES 0
205 #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0
206 #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1
208 union pn533_cmd_poll_initdata
{
221 /* Poll modulations */
223 PN533_POLL_MOD_106KBPS_A
,
224 PN533_POLL_MOD_212KBPS_FELICA
,
225 PN533_POLL_MOD_424KBPS_FELICA
,
226 PN533_POLL_MOD_106KBPS_JEWEL
,
227 PN533_POLL_MOD_847KBPS_B
,
230 __PN533_POLL_MOD_AFTER_LAST
,
232 #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1)
234 struct pn533_poll_modulations
{
238 union pn533_cmd_poll_initdata initiator_data
;
243 static const struct pn533_poll_modulations poll_mod
[] = {
244 [PN533_POLL_MOD_106KBPS_A
] = {
251 [PN533_POLL_MOD_212KBPS_FELICA
] = {
255 .initiator_data
.felica
= {
256 .opcode
= PN533_FELICA_OPC_SENSF_REQ
,
257 .sc
= PN533_FELICA_SENSF_SC_ALL
,
258 .rc
= PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE
,
264 [PN533_POLL_MOD_424KBPS_FELICA
] = {
268 .initiator_data
.felica
= {
269 .opcode
= PN533_FELICA_OPC_SENSF_REQ
,
270 .sc
= PN533_FELICA_SENSF_SC_ALL
,
271 .rc
= PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE
,
277 [PN533_POLL_MOD_106KBPS_JEWEL
] = {
284 [PN533_POLL_MOD_847KBPS_B
] = {
288 .initiator_data
.type_b
= {
289 .afi
= PN533_TYPE_B_AFI_ALL_FAMILIES
,
291 PN533_TYPE_B_POLL_METHOD_TIMESLOT
,
296 [PN533_LISTEN_MOD
] = {
301 /* PN533_CMD_IN_ATR */
303 struct pn533_cmd_activate_response
{
315 struct pn533_cmd_jump_dep_response
{
329 /* PN533_TG_INIT_AS_TARGET */
330 #define PN533_INIT_TARGET_PASSIVE 0x1
331 #define PN533_INIT_TARGET_DEP 0x2
333 #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3
334 #define PN533_INIT_TARGET_RESP_ACTIVE 0x1
335 #define PN533_INIT_TARGET_RESP_DEP 0x4
337 enum pn533_protocol_type
{
338 PN533_PROTO_REQ_ACK_RESP
= 0,
343 struct usb_device
*udev
;
344 struct usb_interface
*interface
;
345 struct nfc_dev
*nfc_dev
;
347 enum pn533_protocol_type protocol_type
;
352 struct sk_buff_head resp_q
;
354 struct workqueue_struct
*wq
;
355 struct work_struct cmd_work
;
356 struct work_struct cmd_complete_work
;
357 struct work_struct poll_work
;
358 struct work_struct mi_work
;
359 struct work_struct tg_work
;
361 struct list_head cmd_queue
;
362 struct pn533_cmd
*cmd
;
364 struct mutex cmd_lock
; /* protects cmd queue */
366 void *cmd_complete_mi_arg
;
368 struct pn533_poll_modulations
*poll_mod_active
[PN533_POLL_MOD_MAX
+ 1];
372 u32 listen_protocols
;
373 struct timer_list listen_timer
;
379 u8 tgt_available_prots
;
383 struct pn533_frame_ops
*ops
;
387 struct list_head queue
;
391 struct sk_buff
*resp
;
393 pn533_send_async_complete_t complete_cb
;
394 void *complete_cb_context
;
397 struct pn533_std_frame
{
405 struct pn533_frame_ops
{
406 void (*tx_frame_init
)(void *frame
, u8 cmd_code
);
407 void (*tx_frame_finish
)(void *frame
);
408 void (*tx_update_payload_len
)(void *frame
, int len
);
412 bool (*rx_is_frame_valid
)(void *frame
);
413 int (*rx_frame_size
)(void *frame
);
418 u8 (*get_cmd_code
)(void *frame
);
421 struct pn533_acr122_ccid_hdr
{
426 u8 params
[3]; /* 3 msg specific bytes or status, error and 1 specific
427 byte for reposnse msg */
428 u8 data
[]; /* payload */
431 struct pn533_acr122_apdu_hdr
{
438 struct pn533_acr122_tx_frame
{
439 struct pn533_acr122_ccid_hdr ccid
;
440 struct pn533_acr122_apdu_hdr apdu
;
442 u8 data
[]; /* pn533 frame: TFI ... */
445 struct pn533_acr122_rx_frame
{
446 struct pn533_acr122_ccid_hdr ccid
;
447 u8 data
[]; /* pn533 frame : TFI ... */
450 static void pn533_acr122_tx_frame_init(void *_frame
, u8 cmd_code
)
452 struct pn533_acr122_tx_frame
*frame
= _frame
;
454 frame
->ccid
.type
= PN533_ACR122_PC_TO_RDR_ESCAPE
;
455 frame
->ccid
.datalen
= sizeof(frame
->apdu
) + 1; /* sizeof(apdu_hdr) +
457 frame
->ccid
.slot
= 0;
459 frame
->ccid
.params
[0] = 0;
460 frame
->ccid
.params
[1] = 0;
461 frame
->ccid
.params
[2] = 0;
463 frame
->data
[0] = PN533_STD_FRAME_DIR_OUT
;
464 frame
->data
[1] = cmd_code
;
465 frame
->datalen
= 2; /* data[0] + data[1] */
467 frame
->apdu
.class = 0xFF;
473 static void pn533_acr122_tx_frame_finish(void *_frame
)
475 struct pn533_acr122_tx_frame
*frame
= _frame
;
477 frame
->ccid
.datalen
+= frame
->datalen
;
480 static void pn533_acr122_tx_update_payload_len(void *_frame
, int len
)
482 struct pn533_acr122_tx_frame
*frame
= _frame
;
484 frame
->datalen
+= len
;
487 static bool pn533_acr122_is_rx_frame_valid(void *_frame
)
489 struct pn533_acr122_rx_frame
*frame
= _frame
;
491 if (frame
->ccid
.type
!= 0x83)
494 if (frame
->data
[frame
->ccid
.datalen
- 2] == 0x63)
500 static int pn533_acr122_rx_frame_size(void *frame
)
502 struct pn533_acr122_rx_frame
*f
= frame
;
504 /* f->ccid.datalen already includes tail length */
505 return sizeof(struct pn533_acr122_rx_frame
) + f
->ccid
.datalen
;
508 static u8
pn533_acr122_get_cmd_code(void *frame
)
510 struct pn533_acr122_rx_frame
*f
= frame
;
512 return PN533_STD_FRAME_CMD(f
);
515 static struct pn533_frame_ops pn533_acr122_frame_ops
= {
516 .tx_frame_init
= pn533_acr122_tx_frame_init
,
517 .tx_frame_finish
= pn533_acr122_tx_frame_finish
,
518 .tx_update_payload_len
= pn533_acr122_tx_update_payload_len
,
519 .tx_header_len
= PN533_ACR122_TX_FRAME_HEADER_LEN
,
520 .tx_tail_len
= PN533_ACR122_TX_FRAME_TAIL_LEN
,
522 .rx_is_frame_valid
= pn533_acr122_is_rx_frame_valid
,
523 .rx_header_len
= PN533_ACR122_RX_FRAME_HEADER_LEN
,
524 .rx_tail_len
= PN533_ACR122_RX_FRAME_TAIL_LEN
,
525 .rx_frame_size
= pn533_acr122_rx_frame_size
,
527 .max_payload_len
= PN533_ACR122_FRAME_MAX_PAYLOAD_LEN
,
528 .get_cmd_code
= pn533_acr122_get_cmd_code
,
531 /* The rule: value + checksum = 0 */
532 static inline u8
pn533_std_checksum(u8 value
)
537 /* The rule: sum(data elements) + checksum = 0 */
538 static u8
pn533_std_data_checksum(u8
*data
, int datalen
)
543 for (i
= 0; i
< datalen
; i
++)
546 return pn533_std_checksum(sum
);
549 static void pn533_std_tx_frame_init(void *_frame
, u8 cmd_code
)
551 struct pn533_std_frame
*frame
= _frame
;
554 frame
->start_frame
= cpu_to_be16(PN533_STD_FRAME_SOF
);
555 PN533_STD_FRAME_IDENTIFIER(frame
) = PN533_STD_FRAME_DIR_OUT
;
556 PN533_STD_FRAME_CMD(frame
) = cmd_code
;
560 static void pn533_std_tx_frame_finish(void *_frame
)
562 struct pn533_std_frame
*frame
= _frame
;
564 frame
->datalen_checksum
= pn533_std_checksum(frame
->datalen
);
566 PN533_STD_FRAME_CHECKSUM(frame
) =
567 pn533_std_data_checksum(frame
->data
, frame
->datalen
);
569 PN533_STD_FRAME_POSTAMBLE(frame
) = 0;
572 static void pn533_std_tx_update_payload_len(void *_frame
, int len
)
574 struct pn533_std_frame
*frame
= _frame
;
576 frame
->datalen
+= len
;
579 static bool pn533_std_rx_frame_is_valid(void *_frame
)
582 struct pn533_std_frame
*frame
= _frame
;
584 if (frame
->start_frame
!= cpu_to_be16(PN533_STD_FRAME_SOF
))
587 checksum
= pn533_std_checksum(frame
->datalen
);
588 if (checksum
!= frame
->datalen_checksum
)
591 checksum
= pn533_std_data_checksum(frame
->data
, frame
->datalen
);
592 if (checksum
!= PN533_STD_FRAME_CHECKSUM(frame
))
598 static bool pn533_std_rx_frame_is_ack(struct pn533_std_frame
*frame
)
600 if (frame
->start_frame
!= cpu_to_be16(PN533_STD_FRAME_SOF
))
603 if (frame
->datalen
!= 0 || frame
->datalen_checksum
!= 0xFF)
609 static inline int pn533_std_rx_frame_size(void *frame
)
611 struct pn533_std_frame
*f
= frame
;
613 return sizeof(struct pn533_std_frame
) + f
->datalen
+
614 PN533_STD_FRAME_TAIL_LEN
;
617 static u8
pn533_std_get_cmd_code(void *frame
)
619 struct pn533_std_frame
*f
= frame
;
621 return PN533_STD_FRAME_CMD(f
);
624 static struct pn533_frame_ops pn533_std_frame_ops
= {
625 .tx_frame_init
= pn533_std_tx_frame_init
,
626 .tx_frame_finish
= pn533_std_tx_frame_finish
,
627 .tx_update_payload_len
= pn533_std_tx_update_payload_len
,
628 .tx_header_len
= PN533_STD_FRAME_HEADER_LEN
,
629 .tx_tail_len
= PN533_STD_FRAME_TAIL_LEN
,
631 .rx_is_frame_valid
= pn533_std_rx_frame_is_valid
,
632 .rx_frame_size
= pn533_std_rx_frame_size
,
633 .rx_header_len
= PN533_STD_FRAME_HEADER_LEN
,
634 .rx_tail_len
= PN533_STD_FRAME_TAIL_LEN
,
636 .max_payload_len
= PN533_STD_FRAME_MAX_PAYLOAD_LEN
,
637 .get_cmd_code
= pn533_std_get_cmd_code
,
640 static bool pn533_rx_frame_is_cmd_response(struct pn533
*dev
, void *frame
)
642 return (dev
->ops
->get_cmd_code(frame
) ==
643 PN533_CMD_RESPONSE(dev
->cmd
->code
));
646 static void pn533_recv_response(struct urb
*urb
)
648 struct pn533
*dev
= urb
->context
;
649 struct pn533_cmd
*cmd
= dev
->cmd
;
652 cmd
->status
= urb
->status
;
654 switch (urb
->status
) {
659 nfc_dev_dbg(&dev
->interface
->dev
,
660 "The urb has been canceled (status %d)",
665 nfc_dev_err(&dev
->interface
->dev
,
666 "Urb failure (status %d)", urb
->status
);
670 in_frame
= dev
->in_urb
->transfer_buffer
;
672 nfc_dev_dbg(&dev
->interface
->dev
, "Received a frame.");
673 print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE
, 16, 1, in_frame
,
674 dev
->ops
->rx_frame_size(in_frame
), false);
676 if (!dev
->ops
->rx_is_frame_valid(in_frame
)) {
677 nfc_dev_err(&dev
->interface
->dev
, "Received an invalid frame");
682 if (!pn533_rx_frame_is_cmd_response(dev
, in_frame
)) {
683 nfc_dev_err(&dev
->interface
->dev
,
684 "It it not the response to the last command");
690 queue_work(dev
->wq
, &dev
->cmd_complete_work
);
693 static int pn533_submit_urb_for_response(struct pn533
*dev
, gfp_t flags
)
695 dev
->in_urb
->complete
= pn533_recv_response
;
697 return usb_submit_urb(dev
->in_urb
, flags
);
700 static void pn533_recv_ack(struct urb
*urb
)
702 struct pn533
*dev
= urb
->context
;
703 struct pn533_cmd
*cmd
= dev
->cmd
;
704 struct pn533_std_frame
*in_frame
;
707 cmd
->status
= urb
->status
;
709 switch (urb
->status
) {
714 nfc_dev_dbg(&dev
->interface
->dev
,
715 "The urb has been stopped (status %d)",
720 nfc_dev_err(&dev
->interface
->dev
,
721 "Urb failure (status %d)", urb
->status
);
725 in_frame
= dev
->in_urb
->transfer_buffer
;
727 if (!pn533_std_rx_frame_is_ack(in_frame
)) {
728 nfc_dev_err(&dev
->interface
->dev
, "Received an invalid ack");
733 rc
= pn533_submit_urb_for_response(dev
, GFP_ATOMIC
);
735 nfc_dev_err(&dev
->interface
->dev
,
736 "usb_submit_urb failed with result %d", rc
);
744 queue_work(dev
->wq
, &dev
->cmd_complete_work
);
747 static int pn533_submit_urb_for_ack(struct pn533
*dev
, gfp_t flags
)
749 dev
->in_urb
->complete
= pn533_recv_ack
;
751 return usb_submit_urb(dev
->in_urb
, flags
);
754 static int pn533_send_ack(struct pn533
*dev
, gfp_t flags
)
756 u8 ack
[PN533_STD_FRAME_ACK_SIZE
] = {0x00, 0x00, 0xff, 0x00, 0xff, 0x00};
757 /* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */
760 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
762 dev
->out_urb
->transfer_buffer
= ack
;
763 dev
->out_urb
->transfer_buffer_length
= sizeof(ack
);
764 rc
= usb_submit_urb(dev
->out_urb
, flags
);
769 static int __pn533_send_frame_async(struct pn533
*dev
,
776 dev
->out_urb
->transfer_buffer
= out
->data
;
777 dev
->out_urb
->transfer_buffer_length
= out
->len
;
779 dev
->in_urb
->transfer_buffer
= in
->data
;
780 dev
->in_urb
->transfer_buffer_length
= in_len
;
782 print_hex_dump_debug("PN533 TX: ", DUMP_PREFIX_NONE
, 16, 1,
783 out
->data
, out
->len
, false);
785 rc
= usb_submit_urb(dev
->out_urb
, GFP_KERNEL
);
789 if (dev
->protocol_type
== PN533_PROTO_REQ_RESP
) {
790 /* request for response for sent packet directly */
791 rc
= pn533_submit_urb_for_response(dev
, GFP_ATOMIC
);
794 } else if (dev
->protocol_type
== PN533_PROTO_REQ_ACK_RESP
) {
795 /* request for ACK if that's the case */
796 rc
= pn533_submit_urb_for_ack(dev
, GFP_KERNEL
);
804 usb_unlink_urb(dev
->out_urb
);
808 static void pn533_build_cmd_frame(struct pn533
*dev
, u8 cmd_code
,
811 /* payload is already there, just update datalen */
812 int payload_len
= skb
->len
;
813 struct pn533_frame_ops
*ops
= dev
->ops
;
816 skb_push(skb
, ops
->tx_header_len
);
817 skb_put(skb
, ops
->tx_tail_len
);
819 ops
->tx_frame_init(skb
->data
, cmd_code
);
820 ops
->tx_update_payload_len(skb
->data
, payload_len
);
821 ops
->tx_frame_finish(skb
->data
);
824 static int pn533_send_async_complete(struct pn533
*dev
)
826 struct pn533_cmd
*cmd
= dev
->cmd
;
827 int status
= cmd
->status
;
829 struct sk_buff
*req
= cmd
->req
;
830 struct sk_buff
*resp
= cmd
->resp
;
837 rc
= cmd
->complete_cb(dev
, cmd
->complete_cb_context
,
843 skb_put(resp
, dev
->ops
->rx_frame_size(resp
->data
));
844 skb_pull(resp
, dev
->ops
->rx_header_len
);
845 skb_trim(resp
, resp
->len
- dev
->ops
->rx_tail_len
);
847 rc
= cmd
->complete_cb(dev
, cmd
->complete_cb_context
, resp
);
855 static int __pn533_send_async(struct pn533
*dev
, u8 cmd_code
,
856 struct sk_buff
*req
, struct sk_buff
*resp
,
858 pn533_send_async_complete_t complete_cb
,
859 void *complete_cb_context
)
861 struct pn533_cmd
*cmd
;
864 nfc_dev_dbg(&dev
->interface
->dev
, "Sending command 0x%x", cmd_code
);
866 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
870 cmd
->code
= cmd_code
;
873 cmd
->resp_len
= resp_len
;
874 cmd
->complete_cb
= complete_cb
;
875 cmd
->complete_cb_context
= complete_cb_context
;
877 pn533_build_cmd_frame(dev
, cmd_code
, req
);
879 mutex_lock(&dev
->cmd_lock
);
881 if (!dev
->cmd_pending
) {
882 rc
= __pn533_send_frame_async(dev
, req
, resp
, resp_len
);
886 dev
->cmd_pending
= 1;
891 nfc_dev_dbg(&dev
->interface
->dev
, "%s Queueing command 0x%x", __func__
,
894 INIT_LIST_HEAD(&cmd
->queue
);
895 list_add_tail(&cmd
->queue
, &dev
->cmd_queue
);
902 mutex_unlock(&dev
->cmd_lock
);
906 static int pn533_send_data_async(struct pn533
*dev
, u8 cmd_code
,
908 pn533_send_async_complete_t complete_cb
,
909 void *complete_cb_context
)
911 struct sk_buff
*resp
;
913 int resp_len
= dev
->ops
->rx_header_len
+
914 dev
->ops
->max_payload_len
+
915 dev
->ops
->rx_tail_len
;
917 resp
= nfc_alloc_recv_skb(resp_len
, GFP_KERNEL
);
921 rc
= __pn533_send_async(dev
, cmd_code
, req
, resp
, resp_len
, complete_cb
,
922 complete_cb_context
);
929 static int pn533_send_cmd_async(struct pn533
*dev
, u8 cmd_code
,
931 pn533_send_async_complete_t complete_cb
,
932 void *complete_cb_context
)
934 struct sk_buff
*resp
;
936 int resp_len
= dev
->ops
->rx_header_len
+
937 dev
->ops
->max_payload_len
+
938 dev
->ops
->rx_tail_len
;
940 resp
= alloc_skb(resp_len
, GFP_KERNEL
);
944 rc
= __pn533_send_async(dev
, cmd_code
, req
, resp
, resp_len
, complete_cb
,
945 complete_cb_context
);
953 * pn533_send_cmd_direct_async
955 * The function sends a piority cmd directly to the chip omiting the cmd
956 * queue. It's intended to be used by chaining mechanism of received responses
957 * where the host has to request every single chunk of data before scheduling
958 * next cmd from the queue.
960 static int pn533_send_cmd_direct_async(struct pn533
*dev
, u8 cmd_code
,
962 pn533_send_async_complete_t complete_cb
,
963 void *complete_cb_context
)
965 struct sk_buff
*resp
;
966 struct pn533_cmd
*cmd
;
968 int resp_len
= dev
->ops
->rx_header_len
+
969 dev
->ops
->max_payload_len
+
970 dev
->ops
->rx_tail_len
;
972 resp
= alloc_skb(resp_len
, GFP_KERNEL
);
976 cmd
= kzalloc(sizeof(*cmd
), GFP_KERNEL
);
982 cmd
->code
= cmd_code
;
985 cmd
->resp_len
= resp_len
;
986 cmd
->complete_cb
= complete_cb
;
987 cmd
->complete_cb_context
= complete_cb_context
;
989 pn533_build_cmd_frame(dev
, cmd_code
, req
);
991 rc
= __pn533_send_frame_async(dev
, req
, resp
, resp_len
);
1002 static void pn533_wq_cmd_complete(struct work_struct
*work
)
1004 struct pn533
*dev
= container_of(work
, struct pn533
, cmd_complete_work
);
1007 rc
= pn533_send_async_complete(dev
);
1008 if (rc
!= -EINPROGRESS
)
1009 queue_work(dev
->wq
, &dev
->cmd_work
);
1012 static void pn533_wq_cmd(struct work_struct
*work
)
1014 struct pn533
*dev
= container_of(work
, struct pn533
, cmd_work
);
1015 struct pn533_cmd
*cmd
;
1018 mutex_lock(&dev
->cmd_lock
);
1020 if (list_empty(&dev
->cmd_queue
)) {
1021 dev
->cmd_pending
= 0;
1022 mutex_unlock(&dev
->cmd_lock
);
1026 cmd
= list_first_entry(&dev
->cmd_queue
, struct pn533_cmd
, queue
);
1028 list_del(&cmd
->queue
);
1030 mutex_unlock(&dev
->cmd_lock
);
1032 rc
= __pn533_send_frame_async(dev
, cmd
->req
, cmd
->resp
, cmd
->resp_len
);
1034 dev_kfree_skb(cmd
->req
);
1035 dev_kfree_skb(cmd
->resp
);
1043 struct pn533_sync_cmd_response
{
1044 struct sk_buff
*resp
;
1045 struct completion done
;
1048 static int pn533_send_sync_complete(struct pn533
*dev
, void *_arg
,
1049 struct sk_buff
*resp
)
1051 struct pn533_sync_cmd_response
*arg
= _arg
;
1054 complete(&arg
->done
);
1059 /* pn533_send_cmd_sync
1061 * Please note the req parameter is freed inside the function to
1062 * limit a number of return value interpretations by the caller.
1064 * 1. negative in case of error during TX path -> req should be freed
1066 * 2. negative in case of error during RX path -> req should not be freed
1067 * as it's been already freed at the begining of RX path by
1068 * async_complete_cb.
1070 * 3. valid pointer in case of succesfult RX path
1072 * A caller has to check a return value with IS_ERR macro. If the test pass,
1073 * the returned pointer is valid.
1076 static struct sk_buff
*pn533_send_cmd_sync(struct pn533
*dev
, u8 cmd_code
,
1077 struct sk_buff
*req
)
1080 struct pn533_sync_cmd_response arg
;
1082 init_completion(&arg
.done
);
1084 rc
= pn533_send_cmd_async(dev
, cmd_code
, req
,
1085 pn533_send_sync_complete
, &arg
);
1091 wait_for_completion(&arg
.done
);
1096 static void pn533_send_complete(struct urb
*urb
)
1098 struct pn533
*dev
= urb
->context
;
1100 switch (urb
->status
) {
1102 break; /* success */
1105 nfc_dev_dbg(&dev
->interface
->dev
,
1106 "The urb has been stopped (status %d)",
1111 nfc_dev_err(&dev
->interface
->dev
,
1112 "Urb failure (status %d)", urb
->status
);
1116 static void pn533_abort_cmd(struct pn533
*dev
, gfp_t flags
)
1118 /* ACR122U does not support any command which aborts last
1119 * issued command i.e. as ACK for standard PN533. Additionally,
1120 * it behaves stange, sending broken or incorrect responses,
1121 * when we cancel urb before the chip will send response.
1123 if (dev
->device_type
== PN533_DEVICE_ACR122U
)
1126 /* An ack will cancel the last issued command */
1127 pn533_send_ack(dev
, flags
);
1129 /* cancel the urb request */
1130 usb_kill_urb(dev
->in_urb
);
1133 static struct sk_buff
*pn533_alloc_skb(struct pn533
*dev
, unsigned int size
)
1135 struct sk_buff
*skb
;
1137 skb
= alloc_skb(dev
->ops
->tx_header_len
+
1139 dev
->ops
->tx_tail_len
, GFP_KERNEL
);
1142 skb_reserve(skb
, dev
->ops
->tx_header_len
);
1147 struct pn533_target_type_a
{
1155 #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
1156 #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
1157 #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
1159 #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
1160 #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
1162 #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
1163 #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
1165 #define PN533_TYPE_A_SEL_PROT_MIFARE 0
1166 #define PN533_TYPE_A_SEL_PROT_ISO14443 1
1167 #define PN533_TYPE_A_SEL_PROT_DEP 2
1168 #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
1170 static bool pn533_target_type_a_is_valid(struct pn533_target_type_a
*type_a
,
1171 int target_data_len
)
1176 if (target_data_len
< sizeof(struct pn533_target_type_a
))
1179 /* The lenght check of nfcid[] and ats[] are not being performed because
1180 the values are not being used */
1182 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
1183 ssd
= PN533_TYPE_A_SENS_RES_SSD(type_a
->sens_res
);
1184 platconf
= PN533_TYPE_A_SENS_RES_PLATCONF(type_a
->sens_res
);
1186 if ((ssd
== PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
1187 platconf
!= PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
) ||
1188 (ssd
!= PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
1189 platconf
== PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
))
1192 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
1193 if (PN533_TYPE_A_SEL_CASCADE(type_a
->sel_res
) != 0)
1199 static int pn533_target_found_type_a(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
1202 struct pn533_target_type_a
*tgt_type_a
;
1204 tgt_type_a
= (struct pn533_target_type_a
*)tgt_data
;
1206 if (!pn533_target_type_a_is_valid(tgt_type_a
, tgt_data_len
))
1209 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a
->sel_res
)) {
1210 case PN533_TYPE_A_SEL_PROT_MIFARE
:
1211 nfc_tgt
->supported_protocols
= NFC_PROTO_MIFARE_MASK
;
1213 case PN533_TYPE_A_SEL_PROT_ISO14443
:
1214 nfc_tgt
->supported_protocols
= NFC_PROTO_ISO14443_MASK
;
1216 case PN533_TYPE_A_SEL_PROT_DEP
:
1217 nfc_tgt
->supported_protocols
= NFC_PROTO_NFC_DEP_MASK
;
1219 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP
:
1220 nfc_tgt
->supported_protocols
= NFC_PROTO_ISO14443_MASK
|
1221 NFC_PROTO_NFC_DEP_MASK
;
1225 nfc_tgt
->sens_res
= be16_to_cpu(tgt_type_a
->sens_res
);
1226 nfc_tgt
->sel_res
= tgt_type_a
->sel_res
;
1227 nfc_tgt
->nfcid1_len
= tgt_type_a
->nfcid_len
;
1228 memcpy(nfc_tgt
->nfcid1
, tgt_type_a
->nfcid_data
, nfc_tgt
->nfcid1_len
);
1233 struct pn533_target_felica
{
1242 #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
1243 #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
1245 static bool pn533_target_felica_is_valid(struct pn533_target_felica
*felica
,
1246 int target_data_len
)
1248 if (target_data_len
< sizeof(struct pn533_target_felica
))
1251 if (felica
->opcode
!= PN533_FELICA_OPC_SENSF_RES
)
1257 static int pn533_target_found_felica(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
1260 struct pn533_target_felica
*tgt_felica
;
1262 tgt_felica
= (struct pn533_target_felica
*)tgt_data
;
1264 if (!pn533_target_felica_is_valid(tgt_felica
, tgt_data_len
))
1267 if ((tgt_felica
->nfcid2
[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1
) &&
1268 (tgt_felica
->nfcid2
[1] == PN533_FELICA_SENSF_NFCID2_DEP_B2
))
1269 nfc_tgt
->supported_protocols
= NFC_PROTO_NFC_DEP_MASK
;
1271 nfc_tgt
->supported_protocols
= NFC_PROTO_FELICA_MASK
;
1273 memcpy(nfc_tgt
->sensf_res
, &tgt_felica
->opcode
, 9);
1274 nfc_tgt
->sensf_res_len
= 9;
1279 struct pn533_target_jewel
{
1284 static bool pn533_target_jewel_is_valid(struct pn533_target_jewel
*jewel
,
1285 int target_data_len
)
1290 if (target_data_len
< sizeof(struct pn533_target_jewel
))
1293 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
1294 ssd
= PN533_TYPE_A_SENS_RES_SSD(jewel
->sens_res
);
1295 platconf
= PN533_TYPE_A_SENS_RES_PLATCONF(jewel
->sens_res
);
1297 if ((ssd
== PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
1298 platconf
!= PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
) ||
1299 (ssd
!= PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
1300 platconf
== PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
))
1306 static int pn533_target_found_jewel(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
1309 struct pn533_target_jewel
*tgt_jewel
;
1311 tgt_jewel
= (struct pn533_target_jewel
*)tgt_data
;
1313 if (!pn533_target_jewel_is_valid(tgt_jewel
, tgt_data_len
))
1316 nfc_tgt
->supported_protocols
= NFC_PROTO_JEWEL_MASK
;
1317 nfc_tgt
->sens_res
= be16_to_cpu(tgt_jewel
->sens_res
);
1318 nfc_tgt
->nfcid1_len
= 4;
1319 memcpy(nfc_tgt
->nfcid1
, tgt_jewel
->jewelid
, nfc_tgt
->nfcid1_len
);
1324 struct pn533_type_b_prot_info
{
1330 #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
1331 #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
1332 #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
1334 struct pn533_type_b_sens_res
{
1338 struct pn533_type_b_prot_info prot_info
;
1341 #define PN533_TYPE_B_OPC_SENSB_RES 0x50
1343 struct pn533_target_type_b
{
1344 struct pn533_type_b_sens_res sensb_res
;
1349 static bool pn533_target_type_b_is_valid(struct pn533_target_type_b
*type_b
,
1350 int target_data_len
)
1352 if (target_data_len
< sizeof(struct pn533_target_type_b
))
1355 if (type_b
->sensb_res
.opcode
!= PN533_TYPE_B_OPC_SENSB_RES
)
1358 if (PN533_TYPE_B_PROT_TYPE(type_b
->sensb_res
.prot_info
.fsci_type
) &
1359 PN533_TYPE_B_PROT_TYPE_RFU_MASK
)
1365 static int pn533_target_found_type_b(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
1368 struct pn533_target_type_b
*tgt_type_b
;
1370 tgt_type_b
= (struct pn533_target_type_b
*)tgt_data
;
1372 if (!pn533_target_type_b_is_valid(tgt_type_b
, tgt_data_len
))
1375 nfc_tgt
->supported_protocols
= NFC_PROTO_ISO14443_B_MASK
;
1380 static int pn533_target_found(struct pn533
*dev
, u8 tg
, u8
*tgdata
,
1383 struct nfc_target nfc_tgt
;
1386 nfc_dev_dbg(&dev
->interface
->dev
, "%s - modulation=%d", __func__
,
1387 dev
->poll_mod_curr
);
1392 memset(&nfc_tgt
, 0, sizeof(struct nfc_target
));
1394 switch (dev
->poll_mod_curr
) {
1395 case PN533_POLL_MOD_106KBPS_A
:
1396 rc
= pn533_target_found_type_a(&nfc_tgt
, tgdata
, tgdata_len
);
1398 case PN533_POLL_MOD_212KBPS_FELICA
:
1399 case PN533_POLL_MOD_424KBPS_FELICA
:
1400 rc
= pn533_target_found_felica(&nfc_tgt
, tgdata
, tgdata_len
);
1402 case PN533_POLL_MOD_106KBPS_JEWEL
:
1403 rc
= pn533_target_found_jewel(&nfc_tgt
, tgdata
, tgdata_len
);
1405 case PN533_POLL_MOD_847KBPS_B
:
1406 rc
= pn533_target_found_type_b(&nfc_tgt
, tgdata
, tgdata_len
);
1409 nfc_dev_err(&dev
->interface
->dev
,
1410 "Unknown current poll modulation");
1417 if (!(nfc_tgt
.supported_protocols
& dev
->poll_protocols
)) {
1418 nfc_dev_dbg(&dev
->interface
->dev
,
1419 "The Tg found doesn't have the desired protocol");
1423 nfc_dev_dbg(&dev
->interface
->dev
,
1424 "Target found - supported protocols: 0x%x",
1425 nfc_tgt
.supported_protocols
);
1427 dev
->tgt_available_prots
= nfc_tgt
.supported_protocols
;
1429 nfc_targets_found(dev
->nfc_dev
, &nfc_tgt
, 1);
1434 static inline void pn533_poll_next_mod(struct pn533
*dev
)
1436 dev
->poll_mod_curr
= (dev
->poll_mod_curr
+ 1) % dev
->poll_mod_count
;
1439 static void pn533_poll_reset_mod_list(struct pn533
*dev
)
1441 dev
->poll_mod_count
= 0;
1444 static void pn533_poll_add_mod(struct pn533
*dev
, u8 mod_index
)
1446 dev
->poll_mod_active
[dev
->poll_mod_count
] =
1447 (struct pn533_poll_modulations
*)&poll_mod
[mod_index
];
1448 dev
->poll_mod_count
++;
1451 static void pn533_poll_create_mod_list(struct pn533
*dev
,
1452 u32 im_protocols
, u32 tm_protocols
)
1454 pn533_poll_reset_mod_list(dev
);
1456 if ((im_protocols
& NFC_PROTO_MIFARE_MASK
) ||
1457 (im_protocols
& NFC_PROTO_ISO14443_MASK
) ||
1458 (im_protocols
& NFC_PROTO_NFC_DEP_MASK
))
1459 pn533_poll_add_mod(dev
, PN533_POLL_MOD_106KBPS_A
);
1461 if (im_protocols
& NFC_PROTO_FELICA_MASK
||
1462 im_protocols
& NFC_PROTO_NFC_DEP_MASK
) {
1463 pn533_poll_add_mod(dev
, PN533_POLL_MOD_212KBPS_FELICA
);
1464 pn533_poll_add_mod(dev
, PN533_POLL_MOD_424KBPS_FELICA
);
1467 if (im_protocols
& NFC_PROTO_JEWEL_MASK
)
1468 pn533_poll_add_mod(dev
, PN533_POLL_MOD_106KBPS_JEWEL
);
1470 if (im_protocols
& NFC_PROTO_ISO14443_B_MASK
)
1471 pn533_poll_add_mod(dev
, PN533_POLL_MOD_847KBPS_B
);
1474 pn533_poll_add_mod(dev
, PN533_LISTEN_MOD
);
1477 static int pn533_start_poll_complete(struct pn533
*dev
, struct sk_buff
*resp
)
1479 u8 nbtg
, tg
, *tgdata
;
1482 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1484 nbtg
= resp
->data
[0];
1486 tgdata
= &resp
->data
[2];
1487 tgdata_len
= resp
->len
- 2; /* nbtg + tg */
1490 rc
= pn533_target_found(dev
, tg
, tgdata
, tgdata_len
);
1492 /* We must stop the poll after a valid target found */
1494 pn533_poll_reset_mod_list(dev
);
1502 static struct sk_buff
*pn533_alloc_poll_tg_frame(struct pn533
*dev
)
1504 struct sk_buff
*skb
;
1505 u8
*felica
, *nfcid3
, *gb
;
1507 u8
*gbytes
= dev
->gb
;
1508 size_t gbytes_len
= dev
->gb_len
;
1510 u8 felica_params
[18] = {0x1, 0xfe, /* DEP */
1511 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */
1512 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1513 0xff, 0xff}; /* System code */
1515 u8 mifare_params
[6] = {0x1, 0x1, /* SENS_RES */
1517 0x40}; /* SEL_RES for DEP */
1519 unsigned int skb_len
= 36 + /* mode (1), mifare (6),
1520 felica (18), nfcid3 (10), gb_len (1) */
1524 skb
= pn533_alloc_skb(dev
, skb_len
);
1528 /* DEP support only */
1529 *skb_put(skb
, 1) = PN533_INIT_TARGET_DEP
;
1532 memcpy(skb_put(skb
, 6), mifare_params
, 6);
1535 felica
= skb_put(skb
, 18);
1536 memcpy(felica
, felica_params
, 18);
1537 get_random_bytes(felica
+ 2, 6);
1540 nfcid3
= skb_put(skb
, 10);
1541 memset(nfcid3
, 0, 10);
1542 memcpy(nfcid3
, felica
, 8);
1545 *skb_put(skb
, 1) = gbytes_len
;
1547 gb
= skb_put(skb
, gbytes_len
);
1548 memcpy(gb
, gbytes
, gbytes_len
);
1551 *skb_put(skb
, 1) = 0;
1556 #define PN533_CMD_DATAEXCH_HEAD_LEN 1
1557 #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262
1558 static int pn533_tm_get_data_complete(struct pn533
*dev
, void *arg
,
1559 struct sk_buff
*resp
)
1563 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1566 return PTR_ERR(resp
);
1568 status
= resp
->data
[0];
1569 skb_pull(resp
, sizeof(status
));
1572 nfc_tm_deactivated(dev
->nfc_dev
);
1574 dev_kfree_skb(resp
);
1578 return nfc_tm_data_received(dev
->nfc_dev
, resp
);
1581 static void pn533_wq_tg_get_data(struct work_struct
*work
)
1583 struct pn533
*dev
= container_of(work
, struct pn533
, tg_work
);
1585 struct sk_buff
*skb
;
1588 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1590 skb
= pn533_alloc_skb(dev
, 0);
1594 rc
= pn533_send_data_async(dev
, PN533_CMD_TG_GET_DATA
, skb
,
1595 pn533_tm_get_data_complete
, NULL
);
1603 #define ATR_REQ_GB_OFFSET 17
1604 static int pn533_init_target_complete(struct pn533
*dev
, struct sk_buff
*resp
)
1606 u8 mode
, *cmd
, comm_mode
= NFC_COMM_PASSIVE
, *gb
;
1610 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1612 if (resp
->len
< ATR_REQ_GB_OFFSET
+ 1)
1615 mode
= resp
->data
[0];
1616 cmd
= &resp
->data
[1];
1618 nfc_dev_dbg(&dev
->interface
->dev
, "Target mode 0x%x len %d\n",
1621 if ((mode
& PN533_INIT_TARGET_RESP_FRAME_MASK
) ==
1622 PN533_INIT_TARGET_RESP_ACTIVE
)
1623 comm_mode
= NFC_COMM_ACTIVE
;
1625 if ((mode
& PN533_INIT_TARGET_RESP_DEP
) == 0) /* Only DEP supported */
1628 gb
= cmd
+ ATR_REQ_GB_OFFSET
;
1629 gb_len
= resp
->len
- (ATR_REQ_GB_OFFSET
+ 1);
1631 rc
= nfc_tm_activated(dev
->nfc_dev
, NFC_PROTO_NFC_DEP_MASK
,
1632 comm_mode
, gb
, gb_len
);
1634 nfc_dev_err(&dev
->interface
->dev
,
1635 "Error when signaling target activation");
1640 queue_work(dev
->wq
, &dev
->tg_work
);
1645 static void pn533_listen_mode_timer(unsigned long data
)
1647 struct pn533
*dev
= (struct pn533
*)data
;
1649 nfc_dev_dbg(&dev
->interface
->dev
, "Listen mode timeout");
1651 dev
->cancel_listen
= 1;
1653 pn533_poll_next_mod(dev
);
1655 queue_work(dev
->wq
, &dev
->poll_work
);
1658 static int pn533_poll_complete(struct pn533
*dev
, void *arg
,
1659 struct sk_buff
*resp
)
1661 struct pn533_poll_modulations
*cur_mod
;
1664 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1669 nfc_dev_err(&dev
->interface
->dev
, "%s Poll complete error %d",
1672 if (rc
== -ENOENT
) {
1673 if (dev
->poll_mod_count
!= 0)
1677 } else if (rc
< 0) {
1678 nfc_dev_err(&dev
->interface
->dev
,
1679 "Error %d when running poll", rc
);
1684 cur_mod
= dev
->poll_mod_active
[dev
->poll_mod_curr
];
1686 if (cur_mod
->len
== 0) { /* Target mode */
1687 del_timer(&dev
->listen_timer
);
1688 rc
= pn533_init_target_complete(dev
, resp
);
1692 /* Initiator mode */
1693 rc
= pn533_start_poll_complete(dev
, resp
);
1697 if (!dev
->poll_mod_count
) {
1698 nfc_dev_dbg(&dev
->interface
->dev
, "Polling has been stoped.");
1702 pn533_poll_next_mod(dev
);
1703 queue_work(dev
->wq
, &dev
->poll_work
);
1706 dev_kfree_skb(resp
);
1710 nfc_dev_err(&dev
->interface
->dev
, "Polling operation has been stopped");
1712 pn533_poll_reset_mod_list(dev
);
1713 dev
->poll_protocols
= 0;
1717 static struct sk_buff
*pn533_alloc_poll_in_frame(struct pn533
*dev
,
1718 struct pn533_poll_modulations
*mod
)
1720 struct sk_buff
*skb
;
1722 skb
= pn533_alloc_skb(dev
, mod
->len
);
1726 memcpy(skb_put(skb
, mod
->len
), &mod
->data
, mod
->len
);
1731 static int pn533_send_poll_frame(struct pn533
*dev
)
1733 struct pn533_poll_modulations
*mod
;
1734 struct sk_buff
*skb
;
1738 mod
= dev
->poll_mod_active
[dev
->poll_mod_curr
];
1740 nfc_dev_dbg(&dev
->interface
->dev
, "%s mod len %d\n",
1741 __func__
, mod
->len
);
1743 if (mod
->len
== 0) { /* Listen mode */
1744 cmd_code
= PN533_CMD_TG_INIT_AS_TARGET
;
1745 skb
= pn533_alloc_poll_tg_frame(dev
);
1746 } else { /* Polling mode */
1747 cmd_code
= PN533_CMD_IN_LIST_PASSIVE_TARGET
;
1748 skb
= pn533_alloc_poll_in_frame(dev
, mod
);
1752 nfc_dev_err(&dev
->interface
->dev
, "Failed to allocate skb.");
1756 rc
= pn533_send_cmd_async(dev
, cmd_code
, skb
, pn533_poll_complete
,
1760 nfc_dev_err(&dev
->interface
->dev
, "Polling loop error %d", rc
);
1766 static void pn533_wq_poll(struct work_struct
*work
)
1768 struct pn533
*dev
= container_of(work
, struct pn533
, poll_work
);
1769 struct pn533_poll_modulations
*cur_mod
;
1772 cur_mod
= dev
->poll_mod_active
[dev
->poll_mod_curr
];
1774 nfc_dev_dbg(&dev
->interface
->dev
,
1775 "%s cancel_listen %d modulation len %d",
1776 __func__
, dev
->cancel_listen
, cur_mod
->len
);
1778 if (dev
->cancel_listen
== 1) {
1779 dev
->cancel_listen
= 0;
1780 pn533_abort_cmd(dev
, GFP_ATOMIC
);
1783 rc
= pn533_send_poll_frame(dev
);
1787 if (cur_mod
->len
== 0 && dev
->poll_mod_count
> 1)
1788 mod_timer(&dev
->listen_timer
, jiffies
+ PN533_LISTEN_TIME
* HZ
);
1793 static int pn533_start_poll(struct nfc_dev
*nfc_dev
,
1794 u32 im_protocols
, u32 tm_protocols
)
1796 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1798 nfc_dev_dbg(&dev
->interface
->dev
,
1799 "%s: im protocols 0x%x tm protocols 0x%x",
1800 __func__
, im_protocols
, tm_protocols
);
1802 if (dev
->tgt_active_prot
) {
1803 nfc_dev_err(&dev
->interface
->dev
,
1804 "Cannot poll with a target already activated");
1808 if (dev
->tgt_mode
) {
1809 nfc_dev_err(&dev
->interface
->dev
,
1810 "Cannot poll while already being activated");
1815 dev
->gb
= nfc_get_local_general_bytes(nfc_dev
, &dev
->gb_len
);
1816 if (dev
->gb
== NULL
)
1820 dev
->poll_mod_curr
= 0;
1821 pn533_poll_create_mod_list(dev
, im_protocols
, tm_protocols
);
1822 dev
->poll_protocols
= im_protocols
;
1823 dev
->listen_protocols
= tm_protocols
;
1825 return pn533_send_poll_frame(dev
);
1828 static void pn533_stop_poll(struct nfc_dev
*nfc_dev
)
1830 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1832 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1834 del_timer(&dev
->listen_timer
);
1836 if (!dev
->poll_mod_count
) {
1837 nfc_dev_dbg(&dev
->interface
->dev
,
1838 "Polling operation was not running");
1842 pn533_abort_cmd(dev
, GFP_KERNEL
);
1843 pn533_poll_reset_mod_list(dev
);
1846 static int pn533_activate_target_nfcdep(struct pn533
*dev
)
1848 struct pn533_cmd_activate_response
*rsp
;
1852 struct sk_buff
*skb
;
1853 struct sk_buff
*resp
;
1855 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1857 skb
= pn533_alloc_skb(dev
, sizeof(u8
) * 2); /*TG + Next*/
1861 *skb_put(skb
, sizeof(u8
)) = 1; /* TG */
1862 *skb_put(skb
, sizeof(u8
)) = 0; /* Next */
1864 resp
= pn533_send_cmd_sync(dev
, PN533_CMD_IN_ATR
, skb
);
1866 return PTR_ERR(resp
);
1868 rsp
= (struct pn533_cmd_activate_response
*)resp
->data
;
1869 rc
= rsp
->status
& PN533_CMD_RET_MASK
;
1870 if (rc
!= PN533_CMD_RET_SUCCESS
) {
1871 nfc_dev_err(&dev
->interface
->dev
,
1872 "Target activation failed (error 0x%x)", rc
);
1873 dev_kfree_skb(resp
);
1877 /* ATR_RES general bytes are located at offset 16 */
1878 gt_len
= resp
->len
- 16;
1879 rc
= nfc_set_remote_general_bytes(dev
->nfc_dev
, rsp
->gt
, gt_len
);
1881 dev_kfree_skb(resp
);
1885 static int pn533_activate_target(struct nfc_dev
*nfc_dev
,
1886 struct nfc_target
*target
, u32 protocol
)
1888 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1891 nfc_dev_dbg(&dev
->interface
->dev
, "%s - protocol=%u", __func__
,
1894 if (dev
->poll_mod_count
) {
1895 nfc_dev_err(&dev
->interface
->dev
,
1896 "Cannot activate while polling");
1900 if (dev
->tgt_active_prot
) {
1901 nfc_dev_err(&dev
->interface
->dev
,
1902 "There is already an active target");
1906 if (!dev
->tgt_available_prots
) {
1907 nfc_dev_err(&dev
->interface
->dev
,
1908 "There is no available target to activate");
1912 if (!(dev
->tgt_available_prots
& (1 << protocol
))) {
1913 nfc_dev_err(&dev
->interface
->dev
,
1914 "Target doesn't support requested proto %u",
1919 if (protocol
== NFC_PROTO_NFC_DEP
) {
1920 rc
= pn533_activate_target_nfcdep(dev
);
1922 nfc_dev_err(&dev
->interface
->dev
,
1923 "Activating target with DEP failed %d", rc
);
1928 dev
->tgt_active_prot
= protocol
;
1929 dev
->tgt_available_prots
= 0;
1934 static void pn533_deactivate_target(struct nfc_dev
*nfc_dev
,
1935 struct nfc_target
*target
)
1937 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1939 struct sk_buff
*skb
;
1940 struct sk_buff
*resp
;
1944 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1946 if (!dev
->tgt_active_prot
) {
1947 nfc_dev_err(&dev
->interface
->dev
, "There is no active target");
1951 dev
->tgt_active_prot
= 0;
1952 skb_queue_purge(&dev
->resp_q
);
1954 skb
= pn533_alloc_skb(dev
, sizeof(u8
));
1958 *skb_put(skb
, 1) = 1; /* TG*/
1960 resp
= pn533_send_cmd_sync(dev
, PN533_CMD_IN_RELEASE
, skb
);
1964 rc
= resp
->data
[0] & PN533_CMD_RET_MASK
;
1965 if (rc
!= PN533_CMD_RET_SUCCESS
)
1966 nfc_dev_err(&dev
->interface
->dev
,
1967 "Error 0x%x when releasing the target", rc
);
1969 dev_kfree_skb(resp
);
1974 static int pn533_in_dep_link_up_complete(struct pn533
*dev
, void *arg
,
1975 struct sk_buff
*resp
)
1977 struct pn533_cmd_jump_dep_response
*rsp
;
1980 u8 active
= *(u8
*)arg
;
1985 return PTR_ERR(resp
);
1987 if (dev
->tgt_available_prots
&&
1988 !(dev
->tgt_available_prots
& (1 << NFC_PROTO_NFC_DEP
))) {
1989 nfc_dev_err(&dev
->interface
->dev
,
1990 "The target does not support DEP");
1995 rsp
= (struct pn533_cmd_jump_dep_response
*)resp
->data
;
1997 rc
= rsp
->status
& PN533_CMD_RET_MASK
;
1998 if (rc
!= PN533_CMD_RET_SUCCESS
) {
1999 nfc_dev_err(&dev
->interface
->dev
,
2000 "Bringing DEP link up failed (error 0x%x)", rc
);
2004 if (!dev
->tgt_available_prots
) {
2005 struct nfc_target nfc_target
;
2007 nfc_dev_dbg(&dev
->interface
->dev
, "Creating new target");
2009 nfc_target
.supported_protocols
= NFC_PROTO_NFC_DEP_MASK
;
2010 nfc_target
.nfcid1_len
= 10;
2011 memcpy(nfc_target
.nfcid1
, rsp
->nfcid3t
, nfc_target
.nfcid1_len
);
2012 rc
= nfc_targets_found(dev
->nfc_dev
, &nfc_target
, 1);
2016 dev
->tgt_available_prots
= 0;
2019 dev
->tgt_active_prot
= NFC_PROTO_NFC_DEP
;
2021 /* ATR_RES general bytes are located at offset 17 */
2022 target_gt_len
= resp
->len
- 17;
2023 rc
= nfc_set_remote_general_bytes(dev
->nfc_dev
,
2024 rsp
->gt
, target_gt_len
);
2026 rc
= nfc_dep_link_is_up(dev
->nfc_dev
,
2027 dev
->nfc_dev
->targets
[0].idx
,
2028 !active
, NFC_RF_INITIATOR
);
2031 dev_kfree_skb(resp
);
2035 static int pn533_mod_to_baud(struct pn533
*dev
)
2037 switch (dev
->poll_mod_curr
) {
2038 case PN533_POLL_MOD_106KBPS_A
:
2040 case PN533_POLL_MOD_212KBPS_FELICA
:
2042 case PN533_POLL_MOD_424KBPS_FELICA
:
2049 #define PASSIVE_DATA_LEN 5
2050 static int pn533_dep_link_up(struct nfc_dev
*nfc_dev
, struct nfc_target
*target
,
2051 u8 comm_mode
, u8
*gb
, size_t gb_len
)
2053 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
2054 struct sk_buff
*skb
;
2055 int rc
, baud
, skb_len
;
2058 u8 passive_data
[PASSIVE_DATA_LEN
] = {0x00, 0xff, 0xff, 0x00, 0x3};
2060 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2062 if (dev
->poll_mod_count
) {
2063 nfc_dev_err(&dev
->interface
->dev
,
2064 "Cannot bring the DEP link up while polling");
2068 if (dev
->tgt_active_prot
) {
2069 nfc_dev_err(&dev
->interface
->dev
,
2070 "There is already an active target");
2074 baud
= pn533_mod_to_baud(dev
);
2076 nfc_dev_err(&dev
->interface
->dev
,
2077 "Invalid curr modulation %d", dev
->poll_mod_curr
);
2081 skb_len
= 3 + gb_len
; /* ActPass + BR + Next */
2082 if (comm_mode
== NFC_COMM_PASSIVE
)
2083 skb_len
+= PASSIVE_DATA_LEN
;
2085 skb
= pn533_alloc_skb(dev
, skb_len
);
2089 *skb_put(skb
, 1) = !comm_mode
; /* ActPass */
2090 *skb_put(skb
, 1) = baud
; /* Baud rate */
2092 next
= skb_put(skb
, 1); /* Next */
2095 if (comm_mode
== NFC_COMM_PASSIVE
&& baud
> 0) {
2096 memcpy(skb_put(skb
, PASSIVE_DATA_LEN
), passive_data
,
2101 if (gb
!= NULL
&& gb_len
> 0) {
2102 memcpy(skb_put(skb
, gb_len
), gb
, gb_len
);
2103 *next
|= 4; /* We have some Gi */
2108 arg
= kmalloc(sizeof(*arg
), GFP_KERNEL
);
2116 rc
= pn533_send_cmd_async(dev
, PN533_CMD_IN_JUMP_FOR_DEP
, skb
,
2117 pn533_in_dep_link_up_complete
, arg
);
2127 static int pn533_dep_link_down(struct nfc_dev
*nfc_dev
)
2129 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
2131 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2133 pn533_poll_reset_mod_list(dev
);
2135 if (dev
->tgt_mode
|| dev
->tgt_active_prot
)
2136 pn533_abort_cmd(dev
, GFP_KERNEL
);
2138 dev
->tgt_active_prot
= 0;
2141 skb_queue_purge(&dev
->resp_q
);
2146 struct pn533_data_exchange_arg
{
2147 data_exchange_cb_t cb
;
2151 static struct sk_buff
*pn533_build_response(struct pn533
*dev
)
2153 struct sk_buff
*skb
, *tmp
, *t
;
2154 unsigned int skb_len
= 0, tmp_len
= 0;
2156 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2158 if (skb_queue_empty(&dev
->resp_q
))
2161 if (skb_queue_len(&dev
->resp_q
) == 1) {
2162 skb
= skb_dequeue(&dev
->resp_q
);
2166 skb_queue_walk_safe(&dev
->resp_q
, tmp
, t
)
2167 skb_len
+= tmp
->len
;
2169 nfc_dev_dbg(&dev
->interface
->dev
, "%s total length %d\n",
2172 skb
= alloc_skb(skb_len
, GFP_KERNEL
);
2176 skb_put(skb
, skb_len
);
2178 skb_queue_walk_safe(&dev
->resp_q
, tmp
, t
) {
2179 memcpy(skb
->data
+ tmp_len
, tmp
->data
, tmp
->len
);
2180 tmp_len
+= tmp
->len
;
2184 skb_queue_purge(&dev
->resp_q
);
2189 static int pn533_data_exchange_complete(struct pn533
*dev
, void *_arg
,
2190 struct sk_buff
*resp
)
2192 struct pn533_data_exchange_arg
*arg
= _arg
;
2193 struct sk_buff
*skb
;
2197 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2204 status
= resp
->data
[0];
2205 ret
= status
& PN533_CMD_RET_MASK
;
2206 mi
= status
& PN533_CMD_MI_MASK
;
2208 skb_pull(resp
, sizeof(status
));
2210 if (ret
!= PN533_CMD_RET_SUCCESS
) {
2211 nfc_dev_err(&dev
->interface
->dev
,
2212 "Exchanging data failed (error 0x%x)", ret
);
2217 skb_queue_tail(&dev
->resp_q
, resp
);
2220 dev
->cmd_complete_mi_arg
= arg
;
2221 queue_work(dev
->wq
, &dev
->mi_work
);
2222 return -EINPROGRESS
;
2225 skb
= pn533_build_response(dev
);
2229 arg
->cb(arg
->cb_context
, skb
, 0);
2234 dev_kfree_skb(resp
);
2236 skb_queue_purge(&dev
->resp_q
);
2237 arg
->cb(arg
->cb_context
, NULL
, rc
);
2242 static int pn533_transceive(struct nfc_dev
*nfc_dev
,
2243 struct nfc_target
*target
, struct sk_buff
*skb
,
2244 data_exchange_cb_t cb
, void *cb_context
)
2246 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
2247 struct pn533_data_exchange_arg
*arg
= NULL
;
2250 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2252 if (skb
->len
> PN533_CMD_DATAEXCH_DATA_MAXLEN
) {
2253 /* TODO: Implement support to multi-part data exchange */
2254 nfc_dev_err(&dev
->interface
->dev
,
2255 "Data length greater than the max allowed: %d",
2256 PN533_CMD_DATAEXCH_DATA_MAXLEN
);
2261 if (!dev
->tgt_active_prot
) {
2262 nfc_dev_err(&dev
->interface
->dev
,
2263 "Can't exchange data if there is no active target");
2268 arg
= kmalloc(sizeof(*arg
), GFP_KERNEL
);
2275 arg
->cb_context
= cb_context
;
2277 switch (dev
->device_type
) {
2278 case PN533_DEVICE_PASORI
:
2279 if (dev
->tgt_active_prot
== NFC_PROTO_FELICA
) {
2280 rc
= pn533_send_data_async(dev
, PN533_CMD_IN_COMM_THRU
,
2282 pn533_data_exchange_complete
,
2288 *skb_push(skb
, sizeof(u8
)) = 1; /*TG*/
2290 rc
= pn533_send_data_async(dev
, PN533_CMD_IN_DATA_EXCHANGE
,
2291 skb
, pn533_data_exchange_complete
,
2297 if (rc
< 0) /* rc from send_async */
2308 static int pn533_tm_send_complete(struct pn533
*dev
, void *arg
,
2309 struct sk_buff
*resp
)
2313 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2316 return PTR_ERR(resp
);
2318 status
= resp
->data
[0];
2320 dev_kfree_skb(resp
);
2323 nfc_tm_deactivated(dev
->nfc_dev
);
2330 queue_work(dev
->wq
, &dev
->tg_work
);
2335 static int pn533_tm_send(struct nfc_dev
*nfc_dev
, struct sk_buff
*skb
)
2337 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
2340 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2342 if (skb
->len
> PN533_CMD_DATAEXCH_DATA_MAXLEN
) {
2343 nfc_dev_err(&dev
->interface
->dev
,
2344 "Data length greater than the max allowed: %d",
2345 PN533_CMD_DATAEXCH_DATA_MAXLEN
);
2349 rc
= pn533_send_data_async(dev
, PN533_CMD_TG_SET_DATA
, skb
,
2350 pn533_tm_send_complete
, NULL
);
2357 static void pn533_wq_mi_recv(struct work_struct
*work
)
2359 struct pn533
*dev
= container_of(work
, struct pn533
, mi_work
);
2361 struct sk_buff
*skb
;
2364 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2366 skb
= pn533_alloc_skb(dev
, PN533_CMD_DATAEXCH_HEAD_LEN
);
2370 switch (dev
->device_type
) {
2371 case PN533_DEVICE_PASORI
:
2372 if (dev
->tgt_active_prot
== NFC_PROTO_FELICA
) {
2373 rc
= pn533_send_cmd_direct_async(dev
,
2374 PN533_CMD_IN_COMM_THRU
,
2376 pn533_data_exchange_complete
,
2377 dev
->cmd_complete_mi_arg
);
2382 *skb_put(skb
, sizeof(u8
)) = 1; /*TG*/
2384 rc
= pn533_send_cmd_direct_async(dev
,
2385 PN533_CMD_IN_DATA_EXCHANGE
,
2387 pn533_data_exchange_complete
,
2388 dev
->cmd_complete_mi_arg
);
2393 if (rc
== 0) /* success */
2396 nfc_dev_err(&dev
->interface
->dev
,
2397 "Error %d when trying to perform data_exchange", rc
);
2400 kfree(dev
->cmd_complete_mi_arg
);
2403 pn533_send_ack(dev
, GFP_KERNEL
);
2404 queue_work(dev
->wq
, &dev
->cmd_work
);
2407 static int pn533_set_configuration(struct pn533
*dev
, u8 cfgitem
, u8
*cfgdata
,
2410 struct sk_buff
*skb
;
2411 struct sk_buff
*resp
;
2415 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2417 skb_len
= sizeof(cfgitem
) + cfgdata_len
; /* cfgitem + cfgdata */
2419 skb
= pn533_alloc_skb(dev
, skb_len
);
2423 *skb_put(skb
, sizeof(cfgitem
)) = cfgitem
;
2424 memcpy(skb_put(skb
, cfgdata_len
), cfgdata
, cfgdata_len
);
2426 resp
= pn533_send_cmd_sync(dev
, PN533_CMD_RF_CONFIGURATION
, skb
);
2428 return PTR_ERR(resp
);
2430 dev_kfree_skb(resp
);
2434 static int pn533_get_firmware_version(struct pn533
*dev
,
2435 struct pn533_fw_version
*fv
)
2437 struct sk_buff
*skb
;
2438 struct sk_buff
*resp
;
2440 skb
= pn533_alloc_skb(dev
, 0);
2444 resp
= pn533_send_cmd_sync(dev
, PN533_CMD_GET_FIRMWARE_VERSION
, skb
);
2446 return PTR_ERR(resp
);
2448 fv
->ic
= resp
->data
[0];
2449 fv
->ver
= resp
->data
[1];
2450 fv
->rev
= resp
->data
[2];
2451 fv
->support
= resp
->data
[3];
2453 dev_kfree_skb(resp
);
2457 static int pn533_pasori_fw_reset(struct pn533
*dev
)
2459 struct sk_buff
*skb
;
2460 struct sk_buff
*resp
;
2462 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2464 skb
= pn533_alloc_skb(dev
, sizeof(u8
));
2468 *skb_put(skb
, sizeof(u8
)) = 0x1;
2470 resp
= pn533_send_cmd_sync(dev
, 0x18, skb
);
2472 return PTR_ERR(resp
);
2474 dev_kfree_skb(resp
);
2479 struct pn533_acr122_poweron_rdr_arg
{
2481 struct completion done
;
2484 static void pn533_acr122_poweron_rdr_resp(struct urb
*urb
)
2486 struct pn533_acr122_poweron_rdr_arg
*arg
= urb
->context
;
2488 nfc_dev_dbg(&urb
->dev
->dev
, "%s", __func__
);
2490 print_hex_dump(KERN_ERR
, "ACR122 RX: ", DUMP_PREFIX_NONE
, 16, 1,
2491 urb
->transfer_buffer
, urb
->transfer_buffer_length
,
2494 arg
->rc
= urb
->status
;
2495 complete(&arg
->done
);
2498 static int pn533_acr122_poweron_rdr(struct pn533
*dev
)
2500 /* Power on th reader (CCID cmd) */
2501 u8 cmd
[10] = {PN533_ACR122_PC_TO_RDR_ICCPOWERON
,
2502 0, 0, 0, 0, 0, 0, 3, 0, 0};
2506 struct pn533_acr122_poweron_rdr_arg arg
;
2508 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
2510 init_completion(&arg
.done
);
2511 cntx
= dev
->in_urb
->context
; /* backup context */
2513 dev
->in_urb
->transfer_buffer
= buf
;
2514 dev
->in_urb
->transfer_buffer_length
= 255;
2515 dev
->in_urb
->complete
= pn533_acr122_poweron_rdr_resp
;
2516 dev
->in_urb
->context
= &arg
;
2518 dev
->out_urb
->transfer_buffer
= cmd
;
2519 dev
->out_urb
->transfer_buffer_length
= sizeof(cmd
);
2521 print_hex_dump(KERN_ERR
, "ACR122 TX: ", DUMP_PREFIX_NONE
, 16, 1,
2522 cmd
, sizeof(cmd
), false);
2524 rc
= usb_submit_urb(dev
->out_urb
, GFP_KERNEL
);
2526 nfc_dev_err(&dev
->interface
->dev
,
2527 "Reader power on cmd error %d", rc
);
2531 rc
= usb_submit_urb(dev
->in_urb
, GFP_KERNEL
);
2533 nfc_dev_err(&dev
->interface
->dev
,
2534 "Can't submit for reader power on cmd response %d",
2539 wait_for_completion(&arg
.done
);
2540 dev
->in_urb
->context
= cntx
; /* restore context */
2545 static struct nfc_ops pn533_nfc_ops
= {
2548 .dep_link_up
= pn533_dep_link_up
,
2549 .dep_link_down
= pn533_dep_link_down
,
2550 .start_poll
= pn533_start_poll
,
2551 .stop_poll
= pn533_stop_poll
,
2552 .activate_target
= pn533_activate_target
,
2553 .deactivate_target
= pn533_deactivate_target
,
2554 .im_transceive
= pn533_transceive
,
2555 .tm_send
= pn533_tm_send
,
2558 static int pn533_setup(struct pn533
*dev
)
2560 struct pn533_config_max_retries max_retries
;
2561 struct pn533_config_timing timing
;
2562 u8 pasori_cfg
[3] = {0x08, 0x01, 0x08};
2565 switch (dev
->device_type
) {
2566 case PN533_DEVICE_STD
:
2567 max_retries
.mx_rty_atr
= PN533_CONFIG_MAX_RETRIES_ENDLESS
;
2568 max_retries
.mx_rty_psl
= 2;
2569 max_retries
.mx_rty_passive_act
=
2570 PN533_CONFIG_MAX_RETRIES_NO_RETRY
;
2572 timing
.rfu
= PN533_CONFIG_TIMING_102
;
2573 timing
.atr_res_timeout
= PN533_CONFIG_TIMING_204
;
2574 timing
.dep_timeout
= PN533_CONFIG_TIMING_409
;
2578 case PN533_DEVICE_PASORI
:
2579 case PN533_DEVICE_ACR122U
:
2580 max_retries
.mx_rty_atr
= 0x2;
2581 max_retries
.mx_rty_psl
= 0x1;
2582 max_retries
.mx_rty_passive_act
=
2583 PN533_CONFIG_MAX_RETRIES_NO_RETRY
;
2585 timing
.rfu
= PN533_CONFIG_TIMING_102
;
2586 timing
.atr_res_timeout
= PN533_CONFIG_TIMING_102
;
2587 timing
.dep_timeout
= PN533_CONFIG_TIMING_204
;
2592 nfc_dev_err(&dev
->interface
->dev
, "Unknown device type %d\n",
2597 rc
= pn533_set_configuration(dev
, PN533_CFGITEM_MAX_RETRIES
,
2598 (u8
*)&max_retries
, sizeof(max_retries
));
2600 nfc_dev_err(&dev
->interface
->dev
,
2601 "Error on setting MAX_RETRIES config");
2606 rc
= pn533_set_configuration(dev
, PN533_CFGITEM_TIMING
,
2607 (u8
*)&timing
, sizeof(timing
));
2609 nfc_dev_err(&dev
->interface
->dev
,
2610 "Error on setting RF timings");
2614 switch (dev
->device_type
) {
2615 case PN533_DEVICE_STD
:
2618 case PN533_DEVICE_PASORI
:
2619 pn533_pasori_fw_reset(dev
);
2621 rc
= pn533_set_configuration(dev
, PN533_CFGITEM_PASORI
,
2624 nfc_dev_err(&dev
->interface
->dev
,
2625 "Error while settings PASORI config");
2629 pn533_pasori_fw_reset(dev
);
2637 static int pn533_probe(struct usb_interface
*interface
,
2638 const struct usb_device_id
*id
)
2640 struct pn533_fw_version fw_ver
;
2642 struct usb_host_interface
*iface_desc
;
2643 struct usb_endpoint_descriptor
*endpoint
;
2644 int in_endpoint
= 0;
2645 int out_endpoint
= 0;
2650 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
2654 dev
->udev
= usb_get_dev(interface_to_usbdev(interface
));
2655 dev
->interface
= interface
;
2656 mutex_init(&dev
->cmd_lock
);
2658 iface_desc
= interface
->cur_altsetting
;
2659 for (i
= 0; i
< iface_desc
->desc
.bNumEndpoints
; ++i
) {
2660 endpoint
= &iface_desc
->endpoint
[i
].desc
;
2662 if (!in_endpoint
&& usb_endpoint_is_bulk_in(endpoint
))
2663 in_endpoint
= endpoint
->bEndpointAddress
;
2665 if (!out_endpoint
&& usb_endpoint_is_bulk_out(endpoint
))
2666 out_endpoint
= endpoint
->bEndpointAddress
;
2669 if (!in_endpoint
|| !out_endpoint
) {
2670 nfc_dev_err(&interface
->dev
,
2671 "Could not find bulk-in or bulk-out endpoint");
2676 dev
->in_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2677 dev
->out_urb
= usb_alloc_urb(0, GFP_KERNEL
);
2679 if (!dev
->in_urb
|| !dev
->out_urb
)
2682 usb_fill_bulk_urb(dev
->in_urb
, dev
->udev
,
2683 usb_rcvbulkpipe(dev
->udev
, in_endpoint
),
2684 NULL
, 0, NULL
, dev
);
2685 usb_fill_bulk_urb(dev
->out_urb
, dev
->udev
,
2686 usb_sndbulkpipe(dev
->udev
, out_endpoint
),
2687 NULL
, 0, pn533_send_complete
, dev
);
2689 INIT_WORK(&dev
->cmd_work
, pn533_wq_cmd
);
2690 INIT_WORK(&dev
->cmd_complete_work
, pn533_wq_cmd_complete
);
2691 INIT_WORK(&dev
->mi_work
, pn533_wq_mi_recv
);
2692 INIT_WORK(&dev
->tg_work
, pn533_wq_tg_get_data
);
2693 INIT_WORK(&dev
->poll_work
, pn533_wq_poll
);
2694 dev
->wq
= alloc_ordered_workqueue("pn533", 0);
2695 if (dev
->wq
== NULL
)
2698 init_timer(&dev
->listen_timer
);
2699 dev
->listen_timer
.data
= (unsigned long) dev
;
2700 dev
->listen_timer
.function
= pn533_listen_mode_timer
;
2702 skb_queue_head_init(&dev
->resp_q
);
2704 INIT_LIST_HEAD(&dev
->cmd_queue
);
2706 usb_set_intfdata(interface
, dev
);
2708 dev
->ops
= &pn533_std_frame_ops
;
2710 dev
->protocol_type
= PN533_PROTO_REQ_ACK_RESP
;
2711 dev
->device_type
= id
->driver_info
;
2712 switch (dev
->device_type
) {
2713 case PN533_DEVICE_STD
:
2714 protocols
= PN533_ALL_PROTOCOLS
;
2717 case PN533_DEVICE_PASORI
:
2718 protocols
= PN533_NO_TYPE_B_PROTOCOLS
;
2721 case PN533_DEVICE_ACR122U
:
2722 protocols
= PN533_NO_TYPE_B_PROTOCOLS
;
2723 dev
->ops
= &pn533_acr122_frame_ops
;
2724 dev
->protocol_type
= PN533_PROTO_REQ_RESP
,
2726 rc
= pn533_acr122_poweron_rdr(dev
);
2728 nfc_dev_err(&dev
->interface
->dev
,
2729 "Couldn't poweron the reader (error %d)",
2736 nfc_dev_err(&dev
->interface
->dev
, "Unknown device type %d\n",
2742 memset(&fw_ver
, 0, sizeof(fw_ver
));
2743 rc
= pn533_get_firmware_version(dev
, &fw_ver
);
2747 nfc_dev_info(&dev
->interface
->dev
,
2748 "NXP PN533 firmware ver %d.%d now attached",
2749 fw_ver
.ver
, fw_ver
.rev
);
2752 dev
->nfc_dev
= nfc_allocate_device(&pn533_nfc_ops
, protocols
,
2754 dev
->ops
->tx_header_len
+
2755 PN533_CMD_DATAEXCH_HEAD_LEN
,
2756 dev
->ops
->tx_tail_len
);
2760 nfc_set_parent_dev(dev
->nfc_dev
, &interface
->dev
);
2761 nfc_set_drvdata(dev
->nfc_dev
, dev
);
2763 rc
= nfc_register_device(dev
->nfc_dev
);
2767 rc
= pn533_setup(dev
);
2769 goto unregister_nfc_dev
;
2774 nfc_unregister_device(dev
->nfc_dev
);
2777 nfc_free_device(dev
->nfc_dev
);
2780 destroy_workqueue(dev
->wq
);
2782 usb_free_urb(dev
->in_urb
);
2783 usb_free_urb(dev
->out_urb
);
2788 static void pn533_disconnect(struct usb_interface
*interface
)
2791 struct pn533_cmd
*cmd
, *n
;
2793 dev
= usb_get_intfdata(interface
);
2794 usb_set_intfdata(interface
, NULL
);
2796 nfc_unregister_device(dev
->nfc_dev
);
2797 nfc_free_device(dev
->nfc_dev
);
2799 usb_kill_urb(dev
->in_urb
);
2800 usb_kill_urb(dev
->out_urb
);
2802 destroy_workqueue(dev
->wq
);
2804 skb_queue_purge(&dev
->resp_q
);
2806 del_timer(&dev
->listen_timer
);
2808 list_for_each_entry_safe(cmd
, n
, &dev
->cmd_queue
, queue
) {
2809 list_del(&cmd
->queue
);
2813 usb_free_urb(dev
->in_urb
);
2814 usb_free_urb(dev
->out_urb
);
2817 nfc_dev_info(&interface
->dev
, "NXP PN533 NFC device disconnected");
2820 static struct usb_driver pn533_driver
= {
2822 .probe
= pn533_probe
,
2823 .disconnect
= pn533_disconnect
,
2824 .id_table
= pn533_table
,
2827 module_usb_driver(pn533_driver
);
2829 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>");
2830 MODULE_AUTHOR("Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
2831 MODULE_AUTHOR("Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>");
2832 MODULE_DESCRIPTION("PN533 usb driver ver " VERSION
);
2833 MODULE_VERSION(VERSION
);
2834 MODULE_LICENSE("GPL");