2 * Copyright (C) 2011 Instituto Nokia de Tecnologia
5 * Lauro Ramos Venancio <lauro.venancio@openbossa.org>
6 * Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
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.
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.
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.
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>
31 #include <net/nfc/nfc.h>
35 #define PN533_VENDOR_ID 0x4CC
36 #define PN533_PRODUCT_ID 0x2533
38 #define SCM_VENDOR_ID 0x4E6
39 #define SCL3711_PRODUCT_ID 0x5591
41 static const struct usb_device_id pn533_table
[] = {
42 { USB_DEVICE(PN533_VENDOR_ID
, PN533_PRODUCT_ID
) },
43 { USB_DEVICE(SCM_VENDOR_ID
, SCL3711_PRODUCT_ID
) },
46 MODULE_DEVICE_TABLE(usb
, pn533_table
);
48 /* frame definitions */
49 #define PN533_FRAME_TAIL_SIZE 2
50 #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \
51 PN533_FRAME_TAIL_SIZE)
52 #define PN533_FRAME_ACK_SIZE (sizeof(struct pn533_frame) + 1)
53 #define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen])
54 #define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1])
57 #define PN533_SOF 0x00FF
59 /* frame identifier: in/out/error */
60 #define PN533_FRAME_IDENTIFIER(f) (f->data[0])
61 #define PN533_DIR_OUT 0xD4
62 #define PN533_DIR_IN 0xD5
65 #define PN533_FRAME_CMD(f) (f->data[1])
66 #define PN533_FRAME_CMD_PARAMS_PTR(f) (&f->data[2])
67 #define PN533_FRAME_CMD_PARAMS_LEN(f) (f->datalen - 2)
69 #define PN533_CMD_GET_FIRMWARE_VERSION 0x02
70 #define PN533_CMD_RF_CONFIGURATION 0x32
71 #define PN533_CMD_IN_DATA_EXCHANGE 0x40
72 #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A
73 #define PN533_CMD_IN_ATR 0x50
74 #define PN533_CMD_IN_RELEASE 0x52
75 #define PN533_CMD_IN_JUMP_FOR_DEP 0x56
77 #define PN533_CMD_RESPONSE(cmd) (cmd + 1)
79 /* PN533 Return codes */
80 #define PN533_CMD_RET_MASK 0x3F
81 #define PN533_CMD_MI_MASK 0x40
82 #define PN533_CMD_RET_SUCCESS 0x00
86 typedef int (*pn533_cmd_complete_t
) (struct pn533
*dev
, void *arg
,
87 u8
*params
, int params_len
);
89 /* structs for pn533 commands */
91 /* PN533_CMD_GET_FIRMWARE_VERSION */
92 struct pn533_fw_version
{
99 /* PN533_CMD_RF_CONFIGURATION */
100 #define PN533_CFGITEM_MAX_RETRIES 0x05
102 #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00
103 #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF
105 struct pn533_config_max_retries
{
108 u8 mx_rty_passive_act
;
111 /* PN533_CMD_IN_LIST_PASSIVE_TARGET */
113 /* felica commands opcode */
114 #define PN533_FELICA_OPC_SENSF_REQ 0
115 #define PN533_FELICA_OPC_SENSF_RES 1
116 /* felica SENSF_REQ parameters */
117 #define PN533_FELICA_SENSF_SC_ALL 0xFFFF
118 #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0
119 #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1
120 #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2
122 /* type B initiator_data values */
123 #define PN533_TYPE_B_AFI_ALL_FAMILIES 0
124 #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0
125 #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1
127 union pn533_cmd_poll_initdata
{
140 /* Poll modulations */
142 PN533_POLL_MOD_106KBPS_A
,
143 PN533_POLL_MOD_212KBPS_FELICA
,
144 PN533_POLL_MOD_424KBPS_FELICA
,
145 PN533_POLL_MOD_106KBPS_JEWEL
,
146 PN533_POLL_MOD_847KBPS_B
,
148 __PN533_POLL_MOD_AFTER_LAST
,
150 #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1)
152 struct pn533_poll_modulations
{
156 union pn533_cmd_poll_initdata initiator_data
;
161 const struct pn533_poll_modulations poll_mod
[] = {
162 [PN533_POLL_MOD_106KBPS_A
] = {
169 [PN533_POLL_MOD_212KBPS_FELICA
] = {
173 .initiator_data
.felica
= {
174 .opcode
= PN533_FELICA_OPC_SENSF_REQ
,
175 .sc
= PN533_FELICA_SENSF_SC_ALL
,
176 .rc
= PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE
,
182 [PN533_POLL_MOD_424KBPS_FELICA
] = {
186 .initiator_data
.felica
= {
187 .opcode
= PN533_FELICA_OPC_SENSF_REQ
,
188 .sc
= PN533_FELICA_SENSF_SC_ALL
,
189 .rc
= PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE
,
195 [PN533_POLL_MOD_106KBPS_JEWEL
] = {
202 [PN533_POLL_MOD_847KBPS_B
] = {
206 .initiator_data
.type_b
= {
207 .afi
= PN533_TYPE_B_AFI_ALL_FAMILIES
,
209 PN533_TYPE_B_POLL_METHOD_TIMESLOT
,
216 /* PN533_CMD_IN_ATR */
218 struct pn533_cmd_activate_param
{
223 struct pn533_cmd_activate_response
{
235 /* PN533_CMD_IN_JUMP_FOR_DEP */
236 struct pn533_cmd_jump_dep
{
243 struct pn533_cmd_jump_dep_response
{
257 struct usb_device
*udev
;
258 struct usb_interface
*interface
;
259 struct nfc_dev
*nfc_dev
;
263 struct pn533_frame
*out_frame
;
267 struct pn533_frame
*in_frame
;
269 struct sk_buff_head resp_q
;
271 struct workqueue_struct
*wq
;
272 struct work_struct cmd_work
;
273 struct work_struct mi_work
;
274 struct pn533_frame
*wq_in_frame
;
277 pn533_cmd_complete_t cmd_complete
;
278 void *cmd_complete_arg
;
279 struct semaphore cmd_lock
;
282 struct pn533_poll_modulations
*poll_mod_active
[PN533_POLL_MOD_MAX
+ 1];
287 u8 tgt_available_prots
;
299 /* The rule: value + checksum = 0 */
300 static inline u8
pn533_checksum(u8 value
)
305 /* The rule: sum(data elements) + checksum = 0 */
306 static u8
pn533_data_checksum(u8
*data
, int datalen
)
311 for (i
= 0; i
< datalen
; i
++)
314 return pn533_checksum(sum
);
318 * pn533_tx_frame_ack - create a ack frame
319 * @frame: The frame to be set as ack
321 * Ack is different type of standard frame. As a standard frame, it has
322 * preamble and start_frame. However the checksum of this frame must fail,
323 * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test
324 * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack.
325 * After datalen_checksum field, the postamble is placed.
327 static void pn533_tx_frame_ack(struct pn533_frame
*frame
)
330 frame
->start_frame
= cpu_to_be16(PN533_SOF
);
332 frame
->datalen_checksum
= 0xFF;
333 /* data[0] is used as postamble */
337 static void pn533_tx_frame_init(struct pn533_frame
*frame
, u8 cmd
)
340 frame
->start_frame
= cpu_to_be16(PN533_SOF
);
341 PN533_FRAME_IDENTIFIER(frame
) = PN533_DIR_OUT
;
342 PN533_FRAME_CMD(frame
) = cmd
;
346 static void pn533_tx_frame_finish(struct pn533_frame
*frame
)
348 frame
->datalen_checksum
= pn533_checksum(frame
->datalen
);
350 PN533_FRAME_CHECKSUM(frame
) =
351 pn533_data_checksum(frame
->data
, frame
->datalen
);
353 PN533_FRAME_POSTAMBLE(frame
) = 0;
356 static bool pn533_rx_frame_is_valid(struct pn533_frame
*frame
)
360 if (frame
->start_frame
!= cpu_to_be16(PN533_SOF
))
363 checksum
= pn533_checksum(frame
->datalen
);
364 if (checksum
!= frame
->datalen_checksum
)
367 checksum
= pn533_data_checksum(frame
->data
, frame
->datalen
);
368 if (checksum
!= PN533_FRAME_CHECKSUM(frame
))
374 static bool pn533_rx_frame_is_ack(struct pn533_frame
*frame
)
376 if (frame
->start_frame
!= cpu_to_be16(PN533_SOF
))
379 if (frame
->datalen
!= 0 || frame
->datalen_checksum
!= 0xFF)
385 static bool pn533_rx_frame_is_cmd_response(struct pn533_frame
*frame
, u8 cmd
)
387 return (PN533_FRAME_CMD(frame
) == PN533_CMD_RESPONSE(cmd
));
391 static void pn533_wq_cmd_complete(struct work_struct
*work
)
393 struct pn533
*dev
= container_of(work
, struct pn533
, cmd_work
);
394 struct pn533_frame
*in_frame
;
397 in_frame
= dev
->wq_in_frame
;
399 if (dev
->wq_in_error
)
400 rc
= dev
->cmd_complete(dev
, dev
->cmd_complete_arg
, NULL
,
403 rc
= dev
->cmd_complete(dev
, dev
->cmd_complete_arg
,
404 PN533_FRAME_CMD_PARAMS_PTR(in_frame
),
405 PN533_FRAME_CMD_PARAMS_LEN(in_frame
));
407 if (rc
!= -EINPROGRESS
)
411 static void pn533_recv_response(struct urb
*urb
)
413 struct pn533
*dev
= urb
->context
;
414 struct pn533_frame
*in_frame
;
416 dev
->wq_in_frame
= NULL
;
418 switch (urb
->status
) {
425 nfc_dev_dbg(&dev
->interface
->dev
, "Urb shutting down with"
426 " status: %d", urb
->status
);
427 dev
->wq_in_error
= urb
->status
;
430 nfc_dev_err(&dev
->interface
->dev
, "Nonzero urb status received:"
432 dev
->wq_in_error
= urb
->status
;
436 in_frame
= dev
->in_urb
->transfer_buffer
;
438 if (!pn533_rx_frame_is_valid(in_frame
)) {
439 nfc_dev_err(&dev
->interface
->dev
, "Received an invalid frame");
440 dev
->wq_in_error
= -EIO
;
444 if (!pn533_rx_frame_is_cmd_response(in_frame
, dev
->cmd
)) {
445 nfc_dev_err(&dev
->interface
->dev
, "The received frame is not "
446 "response to the last command");
447 dev
->wq_in_error
= -EIO
;
451 nfc_dev_dbg(&dev
->interface
->dev
, "Received a valid frame");
452 dev
->wq_in_error
= 0;
453 dev
->wq_in_frame
= in_frame
;
456 queue_work(dev
->wq
, &dev
->cmd_work
);
459 static int pn533_submit_urb_for_response(struct pn533
*dev
, gfp_t flags
)
461 dev
->in_urb
->complete
= pn533_recv_response
;
463 return usb_submit_urb(dev
->in_urb
, flags
);
466 static void pn533_recv_ack(struct urb
*urb
)
468 struct pn533
*dev
= urb
->context
;
469 struct pn533_frame
*in_frame
;
472 switch (urb
->status
) {
479 nfc_dev_dbg(&dev
->interface
->dev
, "Urb shutting down with"
480 " status: %d", urb
->status
);
481 dev
->wq_in_error
= urb
->status
;
484 nfc_dev_err(&dev
->interface
->dev
, "Nonzero urb status received:"
486 dev
->wq_in_error
= urb
->status
;
490 in_frame
= dev
->in_urb
->transfer_buffer
;
492 if (!pn533_rx_frame_is_ack(in_frame
)) {
493 nfc_dev_err(&dev
->interface
->dev
, "Received an invalid ack");
494 dev
->wq_in_error
= -EIO
;
498 nfc_dev_dbg(&dev
->interface
->dev
, "Received a valid ack");
500 rc
= pn533_submit_urb_for_response(dev
, GFP_ATOMIC
);
502 nfc_dev_err(&dev
->interface
->dev
, "usb_submit_urb failed with"
504 dev
->wq_in_error
= rc
;
511 dev
->wq_in_frame
= NULL
;
512 queue_work(dev
->wq
, &dev
->cmd_work
);
515 static int pn533_submit_urb_for_ack(struct pn533
*dev
, gfp_t flags
)
517 dev
->in_urb
->complete
= pn533_recv_ack
;
519 return usb_submit_urb(dev
->in_urb
, flags
);
522 static int pn533_send_ack(struct pn533
*dev
, gfp_t flags
)
526 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
528 pn533_tx_frame_ack(dev
->out_frame
);
530 dev
->out_urb
->transfer_buffer
= dev
->out_frame
;
531 dev
->out_urb
->transfer_buffer_length
= PN533_FRAME_ACK_SIZE
;
532 rc
= usb_submit_urb(dev
->out_urb
, flags
);
537 static int __pn533_send_cmd_frame_async(struct pn533
*dev
,
538 struct pn533_frame
*out_frame
,
539 struct pn533_frame
*in_frame
,
541 pn533_cmd_complete_t cmd_complete
,
542 void *arg
, gfp_t flags
)
546 nfc_dev_dbg(&dev
->interface
->dev
, "Sending command 0x%x",
547 PN533_FRAME_CMD(out_frame
));
549 dev
->cmd
= PN533_FRAME_CMD(out_frame
);
550 dev
->cmd_complete
= cmd_complete
;
551 dev
->cmd_complete_arg
= arg
;
553 dev
->out_urb
->transfer_buffer
= out_frame
;
554 dev
->out_urb
->transfer_buffer_length
=
555 PN533_FRAME_SIZE(out_frame
);
557 dev
->in_urb
->transfer_buffer
= in_frame
;
558 dev
->in_urb
->transfer_buffer_length
= in_frame_len
;
560 rc
= usb_submit_urb(dev
->out_urb
, flags
);
564 rc
= pn533_submit_urb_for_ack(dev
, flags
);
571 usb_unlink_urb(dev
->out_urb
);
575 static int pn533_send_cmd_frame_async(struct pn533
*dev
,
576 struct pn533_frame
*out_frame
,
577 struct pn533_frame
*in_frame
,
579 pn533_cmd_complete_t cmd_complete
,
580 void *arg
, gfp_t flags
)
584 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
586 if (down_trylock(&dev
->cmd_lock
))
589 rc
= __pn533_send_cmd_frame_async(dev
, out_frame
, in_frame
,
590 in_frame_len
, cmd_complete
, arg
, flags
);
600 struct pn533_sync_cmd_response
{
602 struct completion done
;
605 static int pn533_sync_cmd_complete(struct pn533
*dev
, void *_arg
,
606 u8
*params
, int params_len
)
608 struct pn533_sync_cmd_response
*arg
= _arg
;
610 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
614 if (params_len
< 0) /* error */
615 arg
->rc
= params_len
;
617 complete(&arg
->done
);
622 static int pn533_send_cmd_frame_sync(struct pn533
*dev
,
623 struct pn533_frame
*out_frame
,
624 struct pn533_frame
*in_frame
,
628 struct pn533_sync_cmd_response arg
;
630 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
632 init_completion(&arg
.done
);
634 rc
= pn533_send_cmd_frame_async(dev
, out_frame
, in_frame
, in_frame_len
,
635 pn533_sync_cmd_complete
, &arg
, GFP_KERNEL
);
639 wait_for_completion(&arg
.done
);
644 static void pn533_send_complete(struct urb
*urb
)
646 struct pn533
*dev
= urb
->context
;
648 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
650 switch (urb
->status
) {
657 nfc_dev_dbg(&dev
->interface
->dev
, "Urb shutting down with"
658 " status: %d", urb
->status
);
661 nfc_dev_dbg(&dev
->interface
->dev
, "Nonzero urb status received:"
666 struct pn533_target_type_a
{
674 #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
675 #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
676 #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
678 #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
679 #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
681 #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
682 #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
684 #define PN533_TYPE_A_SEL_PROT_MIFARE 0
685 #define PN533_TYPE_A_SEL_PROT_ISO14443 1
686 #define PN533_TYPE_A_SEL_PROT_DEP 2
687 #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
689 static bool pn533_target_type_a_is_valid(struct pn533_target_type_a
*type_a
,
695 if (target_data_len
< sizeof(struct pn533_target_type_a
))
698 /* The lenght check of nfcid[] and ats[] are not being performed because
699 the values are not being used */
701 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
702 ssd
= PN533_TYPE_A_SENS_RES_SSD(type_a
->sens_res
);
703 platconf
= PN533_TYPE_A_SENS_RES_PLATCONF(type_a
->sens_res
);
705 if ((ssd
== PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
706 platconf
!= PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
) ||
707 (ssd
!= PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
708 platconf
== PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
))
711 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
712 if (PN533_TYPE_A_SEL_CASCADE(type_a
->sel_res
) != 0)
718 static int pn533_target_found_type_a(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
721 struct pn533_target_type_a
*tgt_type_a
;
723 tgt_type_a
= (struct pn533_target_type_a
*) tgt_data
;
725 if (!pn533_target_type_a_is_valid(tgt_type_a
, tgt_data_len
))
728 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a
->sel_res
)) {
729 case PN533_TYPE_A_SEL_PROT_MIFARE
:
730 nfc_tgt
->supported_protocols
= NFC_PROTO_MIFARE_MASK
;
732 case PN533_TYPE_A_SEL_PROT_ISO14443
:
733 nfc_tgt
->supported_protocols
= NFC_PROTO_ISO14443_MASK
;
735 case PN533_TYPE_A_SEL_PROT_DEP
:
736 nfc_tgt
->supported_protocols
= NFC_PROTO_NFC_DEP_MASK
;
738 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP
:
739 nfc_tgt
->supported_protocols
= NFC_PROTO_ISO14443_MASK
|
740 NFC_PROTO_NFC_DEP_MASK
;
744 nfc_tgt
->sens_res
= be16_to_cpu(tgt_type_a
->sens_res
);
745 nfc_tgt
->sel_res
= tgt_type_a
->sel_res
;
746 nfc_tgt
->nfcid1_len
= tgt_type_a
->nfcid_len
;
747 memcpy(nfc_tgt
->nfcid1
, tgt_type_a
->nfcid_data
, nfc_tgt
->nfcid1_len
);
752 struct pn533_target_felica
{
761 #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
762 #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
764 static bool pn533_target_felica_is_valid(struct pn533_target_felica
*felica
,
767 if (target_data_len
< sizeof(struct pn533_target_felica
))
770 if (felica
->opcode
!= PN533_FELICA_OPC_SENSF_RES
)
776 static int pn533_target_found_felica(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
779 struct pn533_target_felica
*tgt_felica
;
781 tgt_felica
= (struct pn533_target_felica
*) tgt_data
;
783 if (!pn533_target_felica_is_valid(tgt_felica
, tgt_data_len
))
786 if (tgt_felica
->nfcid2
[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1
&&
787 tgt_felica
->nfcid2
[1] ==
788 PN533_FELICA_SENSF_NFCID2_DEP_B2
)
789 nfc_tgt
->supported_protocols
= NFC_PROTO_NFC_DEP_MASK
;
791 nfc_tgt
->supported_protocols
= NFC_PROTO_FELICA_MASK
;
793 memcpy(nfc_tgt
->sensf_res
, &tgt_felica
->opcode
, 9);
794 nfc_tgt
->sensf_res_len
= 9;
799 struct pn533_target_jewel
{
804 static bool pn533_target_jewel_is_valid(struct pn533_target_jewel
*jewel
,
810 if (target_data_len
< sizeof(struct pn533_target_jewel
))
813 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
814 ssd
= PN533_TYPE_A_SENS_RES_SSD(jewel
->sens_res
);
815 platconf
= PN533_TYPE_A_SENS_RES_PLATCONF(jewel
->sens_res
);
817 if ((ssd
== PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
818 platconf
!= PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
) ||
819 (ssd
!= PN533_TYPE_A_SENS_RES_SSD_JEWEL
&&
820 platconf
== PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL
))
826 static int pn533_target_found_jewel(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
829 struct pn533_target_jewel
*tgt_jewel
;
831 tgt_jewel
= (struct pn533_target_jewel
*) tgt_data
;
833 if (!pn533_target_jewel_is_valid(tgt_jewel
, tgt_data_len
))
836 nfc_tgt
->supported_protocols
= NFC_PROTO_JEWEL_MASK
;
837 nfc_tgt
->sens_res
= be16_to_cpu(tgt_jewel
->sens_res
);
838 nfc_tgt
->nfcid1_len
= 4;
839 memcpy(nfc_tgt
->nfcid1
, tgt_jewel
->jewelid
, nfc_tgt
->nfcid1_len
);
844 struct pn533_type_b_prot_info
{
850 #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
851 #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
852 #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
854 struct pn533_type_b_sens_res
{
858 struct pn533_type_b_prot_info prot_info
;
861 #define PN533_TYPE_B_OPC_SENSB_RES 0x50
863 struct pn533_target_type_b
{
864 struct pn533_type_b_sens_res sensb_res
;
869 static bool pn533_target_type_b_is_valid(struct pn533_target_type_b
*type_b
,
872 if (target_data_len
< sizeof(struct pn533_target_type_b
))
875 if (type_b
->sensb_res
.opcode
!= PN533_TYPE_B_OPC_SENSB_RES
)
878 if (PN533_TYPE_B_PROT_TYPE(type_b
->sensb_res
.prot_info
.fsci_type
) &
879 PN533_TYPE_B_PROT_TYPE_RFU_MASK
)
885 static int pn533_target_found_type_b(struct nfc_target
*nfc_tgt
, u8
*tgt_data
,
888 struct pn533_target_type_b
*tgt_type_b
;
890 tgt_type_b
= (struct pn533_target_type_b
*) tgt_data
;
892 if (!pn533_target_type_b_is_valid(tgt_type_b
, tgt_data_len
))
895 nfc_tgt
->supported_protocols
= NFC_PROTO_ISO14443_MASK
;
900 struct pn533_poll_response
{
906 static int pn533_target_found(struct pn533
*dev
,
907 struct pn533_poll_response
*resp
, int resp_len
)
910 struct nfc_target nfc_tgt
;
913 nfc_dev_dbg(&dev
->interface
->dev
, "%s - modulation=%d", __func__
,
919 memset(&nfc_tgt
, 0, sizeof(struct nfc_target
));
921 target_data_len
= resp_len
- sizeof(struct pn533_poll_response
);
923 switch (dev
->poll_mod_curr
) {
924 case PN533_POLL_MOD_106KBPS_A
:
925 rc
= pn533_target_found_type_a(&nfc_tgt
, resp
->target_data
,
928 case PN533_POLL_MOD_212KBPS_FELICA
:
929 case PN533_POLL_MOD_424KBPS_FELICA
:
930 rc
= pn533_target_found_felica(&nfc_tgt
, resp
->target_data
,
933 case PN533_POLL_MOD_106KBPS_JEWEL
:
934 rc
= pn533_target_found_jewel(&nfc_tgt
, resp
->target_data
,
937 case PN533_POLL_MOD_847KBPS_B
:
938 rc
= pn533_target_found_type_b(&nfc_tgt
, resp
->target_data
,
942 nfc_dev_err(&dev
->interface
->dev
, "Unknown current poll"
950 if (!(nfc_tgt
.supported_protocols
& dev
->poll_protocols
)) {
951 nfc_dev_dbg(&dev
->interface
->dev
, "The target found does not"
952 " have the desired protocol");
956 nfc_dev_dbg(&dev
->interface
->dev
, "Target found - supported protocols: "
957 "0x%x", nfc_tgt
.supported_protocols
);
959 dev
->tgt_available_prots
= nfc_tgt
.supported_protocols
;
961 nfc_targets_found(dev
->nfc_dev
, &nfc_tgt
, 1);
966 static void pn533_poll_reset_mod_list(struct pn533
*dev
)
968 dev
->poll_mod_count
= 0;
971 static void pn533_poll_add_mod(struct pn533
*dev
, u8 mod_index
)
973 dev
->poll_mod_active
[dev
->poll_mod_count
] =
974 (struct pn533_poll_modulations
*) &poll_mod
[mod_index
];
975 dev
->poll_mod_count
++;
978 static void pn533_poll_create_mod_list(struct pn533
*dev
, u32 protocols
)
980 pn533_poll_reset_mod_list(dev
);
982 if (protocols
& NFC_PROTO_MIFARE_MASK
983 || protocols
& NFC_PROTO_ISO14443_MASK
984 || protocols
& NFC_PROTO_NFC_DEP_MASK
)
985 pn533_poll_add_mod(dev
, PN533_POLL_MOD_106KBPS_A
);
987 if (protocols
& NFC_PROTO_FELICA_MASK
988 || protocols
& NFC_PROTO_NFC_DEP_MASK
) {
989 pn533_poll_add_mod(dev
, PN533_POLL_MOD_212KBPS_FELICA
);
990 pn533_poll_add_mod(dev
, PN533_POLL_MOD_424KBPS_FELICA
);
993 if (protocols
& NFC_PROTO_JEWEL_MASK
)
994 pn533_poll_add_mod(dev
, PN533_POLL_MOD_106KBPS_JEWEL
);
996 if (protocols
& NFC_PROTO_ISO14443_MASK
)
997 pn533_poll_add_mod(dev
, PN533_POLL_MOD_847KBPS_B
);
1000 static void pn533_start_poll_frame(struct pn533_frame
*frame
,
1001 struct pn533_poll_modulations
*mod
)
1004 pn533_tx_frame_init(frame
, PN533_CMD_IN_LIST_PASSIVE_TARGET
);
1006 memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame
), &mod
->data
, mod
->len
);
1007 frame
->datalen
+= mod
->len
;
1009 pn533_tx_frame_finish(frame
);
1012 static int pn533_start_poll_complete(struct pn533
*dev
, void *arg
,
1013 u8
*params
, int params_len
)
1015 struct pn533_poll_response
*resp
;
1016 struct pn533_poll_modulations
*next_mod
;
1019 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1021 if (params_len
== -ENOENT
) {
1022 nfc_dev_dbg(&dev
->interface
->dev
, "Polling operation has been"
1027 if (params_len
< 0) {
1028 nfc_dev_err(&dev
->interface
->dev
, "Error %d when running poll",
1033 resp
= (struct pn533_poll_response
*) params
;
1035 rc
= pn533_target_found(dev
, resp
, params_len
);
1037 /* We must stop the poll after a valid target found */
1042 nfc_dev_err(&dev
->interface
->dev
, "The target found is"
1043 " not valid - continuing to poll");
1046 dev
->poll_mod_curr
= (dev
->poll_mod_curr
+ 1) % dev
->poll_mod_count
;
1048 next_mod
= dev
->poll_mod_active
[dev
->poll_mod_curr
];
1050 nfc_dev_dbg(&dev
->interface
->dev
, "Polling next modulation (0x%x)",
1051 dev
->poll_mod_curr
);
1053 pn533_start_poll_frame(dev
->out_frame
, next_mod
);
1055 /* Don't need to down the semaphore again */
1056 rc
= __pn533_send_cmd_frame_async(dev
, dev
->out_frame
, dev
->in_frame
,
1057 dev
->in_maxlen
, pn533_start_poll_complete
,
1061 nfc_dev_dbg(&dev
->interface
->dev
, "Cannot poll next modulation"
1062 " because poll has been stopped");
1067 nfc_dev_err(&dev
->interface
->dev
, "Error %d when trying to poll"
1068 " next modulation", rc
);
1072 /* Inform caller function to do not up the semaphore */
1073 return -EINPROGRESS
;
1076 pn533_poll_reset_mod_list(dev
);
1077 dev
->poll_protocols
= 0;
1081 static int pn533_start_poll(struct nfc_dev
*nfc_dev
, u32 protocols
)
1083 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1084 struct pn533_poll_modulations
*start_mod
;
1087 nfc_dev_dbg(&dev
->interface
->dev
, "%s - protocols=0x%x", __func__
,
1090 if (dev
->poll_mod_count
) {
1091 nfc_dev_err(&dev
->interface
->dev
, "Polling operation already"
1096 if (dev
->tgt_active_prot
) {
1097 nfc_dev_err(&dev
->interface
->dev
, "Cannot poll with a target"
1098 " already activated");
1102 pn533_poll_create_mod_list(dev
, protocols
);
1104 if (!dev
->poll_mod_count
) {
1105 nfc_dev_err(&dev
->interface
->dev
, "No valid protocols"
1111 nfc_dev_dbg(&dev
->interface
->dev
, "It will poll %d modulations types",
1112 dev
->poll_mod_count
);
1114 dev
->poll_mod_curr
= 0;
1115 start_mod
= dev
->poll_mod_active
[dev
->poll_mod_curr
];
1117 pn533_start_poll_frame(dev
->out_frame
, start_mod
);
1119 rc
= pn533_send_cmd_frame_async(dev
, dev
->out_frame
, dev
->in_frame
,
1120 dev
->in_maxlen
, pn533_start_poll_complete
,
1124 nfc_dev_err(&dev
->interface
->dev
, "Error %d when trying to"
1129 dev
->poll_protocols
= protocols
;
1134 pn533_poll_reset_mod_list(dev
);
1138 static void pn533_stop_poll(struct nfc_dev
*nfc_dev
)
1140 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1142 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1144 if (!dev
->poll_mod_count
) {
1145 nfc_dev_dbg(&dev
->interface
->dev
, "Polling operation was not"
1150 /* An ack will cancel the last issued command (poll) */
1151 pn533_send_ack(dev
, GFP_KERNEL
);
1153 /* prevent pn533_start_poll_complete to issue a new poll meanwhile */
1154 usb_kill_urb(dev
->in_urb
);
1157 static int pn533_activate_target_nfcdep(struct pn533
*dev
)
1159 struct pn533_cmd_activate_param param
;
1160 struct pn533_cmd_activate_response
*resp
;
1164 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1166 pn533_tx_frame_init(dev
->out_frame
, PN533_CMD_IN_ATR
);
1170 memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev
->out_frame
), ¶m
,
1171 sizeof(struct pn533_cmd_activate_param
));
1172 dev
->out_frame
->datalen
+= sizeof(struct pn533_cmd_activate_param
);
1174 pn533_tx_frame_finish(dev
->out_frame
);
1176 rc
= pn533_send_cmd_frame_sync(dev
, dev
->out_frame
, dev
->in_frame
,
1181 resp
= (struct pn533_cmd_activate_response
*)
1182 PN533_FRAME_CMD_PARAMS_PTR(dev
->in_frame
);
1183 rc
= resp
->status
& PN533_CMD_RET_MASK
;
1184 if (rc
!= PN533_CMD_RET_SUCCESS
)
1187 /* ATR_RES general bytes are located at offset 16 */
1188 gt_len
= PN533_FRAME_CMD_PARAMS_LEN(dev
->in_frame
) - 16;
1189 rc
= nfc_set_remote_general_bytes(dev
->nfc_dev
, resp
->gt
, gt_len
);
1194 static int pn533_activate_target(struct nfc_dev
*nfc_dev
,
1195 struct nfc_target
*target
, u32 protocol
)
1197 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1200 nfc_dev_dbg(&dev
->interface
->dev
, "%s - protocol=%u", __func__
,
1203 if (dev
->poll_mod_count
) {
1204 nfc_dev_err(&dev
->interface
->dev
, "Cannot activate while"
1209 if (dev
->tgt_active_prot
) {
1210 nfc_dev_err(&dev
->interface
->dev
, "There is already an active"
1215 if (!dev
->tgt_available_prots
) {
1216 nfc_dev_err(&dev
->interface
->dev
, "There is no available target"
1221 if (!(dev
->tgt_available_prots
& (1 << protocol
))) {
1222 nfc_dev_err(&dev
->interface
->dev
, "The target does not support"
1223 " the requested protocol %u", protocol
);
1227 if (protocol
== NFC_PROTO_NFC_DEP
) {
1228 rc
= pn533_activate_target_nfcdep(dev
);
1230 nfc_dev_err(&dev
->interface
->dev
, "Error %d when"
1231 " activating target with"
1232 " NFC_DEP protocol", rc
);
1237 dev
->tgt_active_prot
= protocol
;
1238 dev
->tgt_available_prots
= 0;
1243 static void pn533_deactivate_target(struct nfc_dev
*nfc_dev
,
1244 struct nfc_target
*target
)
1246 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1251 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1253 if (!dev
->tgt_active_prot
) {
1254 nfc_dev_err(&dev
->interface
->dev
, "There is no active target");
1258 dev
->tgt_active_prot
= 0;
1260 skb_queue_purge(&dev
->resp_q
);
1262 pn533_tx_frame_init(dev
->out_frame
, PN533_CMD_IN_RELEASE
);
1265 memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev
->out_frame
), &tg
, sizeof(u8
));
1266 dev
->out_frame
->datalen
+= sizeof(u8
);
1268 pn533_tx_frame_finish(dev
->out_frame
);
1270 rc
= pn533_send_cmd_frame_sync(dev
, dev
->out_frame
, dev
->in_frame
,
1273 nfc_dev_err(&dev
->interface
->dev
, "Error when sending release"
1274 " command to the controller");
1278 status
= PN533_FRAME_CMD_PARAMS_PTR(dev
->in_frame
)[0];
1279 rc
= status
& PN533_CMD_RET_MASK
;
1280 if (rc
!= PN533_CMD_RET_SUCCESS
)
1281 nfc_dev_err(&dev
->interface
->dev
, "Error 0x%x when releasing"
1288 static int pn533_in_dep_link_up_complete(struct pn533
*dev
, void *arg
,
1289 u8
*params
, int params_len
)
1291 struct pn533_cmd_jump_dep
*cmd
;
1292 struct pn533_cmd_jump_dep_response
*resp
;
1293 struct nfc_target nfc_target
;
1297 if (params_len
== -ENOENT
) {
1298 nfc_dev_dbg(&dev
->interface
->dev
, "");
1302 if (params_len
< 0) {
1303 nfc_dev_err(&dev
->interface
->dev
,
1304 "Error %d when bringing DEP link up",
1309 if (dev
->tgt_available_prots
&&
1310 !(dev
->tgt_available_prots
& (1 << NFC_PROTO_NFC_DEP
))) {
1311 nfc_dev_err(&dev
->interface
->dev
,
1312 "The target does not support DEP");
1316 resp
= (struct pn533_cmd_jump_dep_response
*) params
;
1317 cmd
= (struct pn533_cmd_jump_dep
*) arg
;
1318 rc
= resp
->status
& PN533_CMD_RET_MASK
;
1319 if (rc
!= PN533_CMD_RET_SUCCESS
) {
1320 nfc_dev_err(&dev
->interface
->dev
,
1321 "Bringing DEP link up failed %d", rc
);
1325 if (!dev
->tgt_available_prots
) {
1326 nfc_dev_dbg(&dev
->interface
->dev
, "Creating new target");
1328 nfc_target
.supported_protocols
= NFC_PROTO_NFC_DEP_MASK
;
1329 nfc_target
.nfcid1_len
= 10;
1330 memcpy(nfc_target
.nfcid1
, resp
->nfcid3t
, nfc_target
.nfcid1_len
);
1331 rc
= nfc_targets_found(dev
->nfc_dev
, &nfc_target
, 1);
1335 dev
->tgt_available_prots
= 0;
1338 dev
->tgt_active_prot
= NFC_PROTO_NFC_DEP
;
1340 /* ATR_RES general bytes are located at offset 17 */
1341 target_gt_len
= PN533_FRAME_CMD_PARAMS_LEN(dev
->in_frame
) - 17;
1342 rc
= nfc_set_remote_general_bytes(dev
->nfc_dev
,
1343 resp
->gt
, target_gt_len
);
1345 rc
= nfc_dep_link_is_up(dev
->nfc_dev
,
1346 dev
->nfc_dev
->targets
[0].idx
,
1347 !cmd
->active
, NFC_RF_INITIATOR
);
1352 static int pn533_dep_link_up(struct nfc_dev
*nfc_dev
, struct nfc_target
*target
,
1353 u8 comm_mode
, u8
* gb
, size_t gb_len
)
1355 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1356 struct pn533_cmd_jump_dep
*cmd
;
1360 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1362 if (dev
->poll_mod_count
) {
1363 nfc_dev_err(&dev
->interface
->dev
,
1364 "Cannot bring the DEP link up while polling");
1368 if (dev
->tgt_active_prot
) {
1369 nfc_dev_err(&dev
->interface
->dev
,
1370 "There is already an active target");
1374 cmd_len
= sizeof(struct pn533_cmd_jump_dep
) + gb_len
;
1375 cmd
= kzalloc(cmd_len
, GFP_KERNEL
);
1379 pn533_tx_frame_init(dev
->out_frame
, PN533_CMD_IN_JUMP_FOR_DEP
);
1381 cmd
->active
= !comm_mode
;
1383 if (gb
!= NULL
&& gb_len
> 0) {
1384 cmd
->next
= 4; /* We have some Gi */
1385 memcpy(cmd
->gt
, gb
, gb_len
);
1390 memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev
->out_frame
), cmd
, cmd_len
);
1391 dev
->out_frame
->datalen
+= cmd_len
;
1393 pn533_tx_frame_finish(dev
->out_frame
);
1395 rc
= pn533_send_cmd_frame_async(dev
, dev
->out_frame
, dev
->in_frame
,
1396 dev
->in_maxlen
, pn533_in_dep_link_up_complete
,
1408 static int pn533_dep_link_down(struct nfc_dev
*nfc_dev
)
1410 pn533_deactivate_target(nfc_dev
, 0);
1415 #define PN533_CMD_DATAEXCH_HEAD_LEN (sizeof(struct pn533_frame) + 3)
1416 #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262
1418 static int pn533_data_exchange_tx_frame(struct pn533
*dev
, struct sk_buff
*skb
)
1420 int payload_len
= skb
->len
;
1421 struct pn533_frame
*out_frame
;
1424 nfc_dev_dbg(&dev
->interface
->dev
, "%s - Sending %d bytes", __func__
,
1427 if (payload_len
> PN533_CMD_DATAEXCH_DATA_MAXLEN
) {
1428 /* TODO: Implement support to multi-part data exchange */
1429 nfc_dev_err(&dev
->interface
->dev
, "Data length greater than the"
1431 PN533_CMD_DATAEXCH_DATA_MAXLEN
);
1435 skb_push(skb
, PN533_CMD_DATAEXCH_HEAD_LEN
);
1436 out_frame
= (struct pn533_frame
*) skb
->data
;
1438 pn533_tx_frame_init(out_frame
, PN533_CMD_IN_DATA_EXCHANGE
);
1441 memcpy(PN533_FRAME_CMD_PARAMS_PTR(out_frame
), &tg
, sizeof(u8
));
1442 out_frame
->datalen
+= sizeof(u8
);
1444 /* The data is already in the out_frame, just update the datalen */
1445 out_frame
->datalen
+= payload_len
;
1447 pn533_tx_frame_finish(out_frame
);
1448 skb_put(skb
, PN533_FRAME_TAIL_SIZE
);
1453 struct pn533_data_exchange_arg
{
1454 struct sk_buff
*skb_resp
;
1455 struct sk_buff
*skb_out
;
1456 data_exchange_cb_t cb
;
1460 static struct sk_buff
*pn533_build_response(struct pn533
*dev
)
1462 struct sk_buff
*skb
, *tmp
, *t
;
1463 unsigned int skb_len
= 0, tmp_len
= 0;
1465 nfc_dev_dbg(&dev
->interface
->dev
, "%s\n", __func__
);
1467 if (skb_queue_empty(&dev
->resp_q
))
1470 if (skb_queue_len(&dev
->resp_q
) == 1) {
1471 skb
= skb_dequeue(&dev
->resp_q
);
1475 skb_queue_walk_safe(&dev
->resp_q
, tmp
, t
)
1476 skb_len
+= tmp
->len
;
1478 nfc_dev_dbg(&dev
->interface
->dev
, "%s total length %d\n",
1481 skb
= alloc_skb(skb_len
, GFP_KERNEL
);
1485 skb_put(skb
, skb_len
);
1487 skb_queue_walk_safe(&dev
->resp_q
, tmp
, t
) {
1488 memcpy(skb
->data
+ tmp_len
, tmp
->data
, tmp
->len
);
1489 tmp_len
+= tmp
->len
;
1493 skb_queue_purge(&dev
->resp_q
);
1498 static int pn533_data_exchange_complete(struct pn533
*dev
, void *_arg
,
1499 u8
*params
, int params_len
)
1501 struct pn533_data_exchange_arg
*arg
= _arg
;
1502 struct sk_buff
*skb
= NULL
, *skb_resp
= arg
->skb_resp
;
1503 struct pn533_frame
*in_frame
= (struct pn533_frame
*) skb_resp
->data
;
1508 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1510 dev_kfree_skb(arg
->skb_out
);
1512 if (params_len
< 0) { /* error */
1519 cmd_ret
= status
& PN533_CMD_RET_MASK
;
1520 if (cmd_ret
!= PN533_CMD_RET_SUCCESS
) {
1521 nfc_dev_err(&dev
->interface
->dev
, "PN533 reported error %d when"
1522 " exchanging data", cmd_ret
);
1527 skb_put(skb_resp
, PN533_FRAME_SIZE(in_frame
));
1528 skb_pull(skb_resp
, PN533_CMD_DATAEXCH_HEAD_LEN
);
1529 skb_trim(skb_resp
, skb_resp
->len
- PN533_FRAME_TAIL_SIZE
);
1530 skb_queue_tail(&dev
->resp_q
, skb_resp
);
1532 if (status
& PN533_CMD_MI_MASK
) {
1533 queue_work(dev
->wq
, &dev
->mi_work
);
1534 return -EINPROGRESS
;
1537 skb
= pn533_build_response(dev
);
1541 arg
->cb(arg
->cb_context
, skb
, 0);
1546 skb_queue_purge(&dev
->resp_q
);
1547 dev_kfree_skb(skb_resp
);
1548 arg
->cb(arg
->cb_context
, NULL
, err
);
1553 static int pn533_data_exchange(struct nfc_dev
*nfc_dev
,
1554 struct nfc_target
*target
, struct sk_buff
*skb
,
1555 data_exchange_cb_t cb
, void *cb_context
)
1557 struct pn533
*dev
= nfc_get_drvdata(nfc_dev
);
1558 struct pn533_frame
*out_frame
, *in_frame
;
1559 struct pn533_data_exchange_arg
*arg
;
1560 struct sk_buff
*skb_resp
;
1564 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1566 if (!dev
->tgt_active_prot
) {
1567 nfc_dev_err(&dev
->interface
->dev
, "Cannot exchange data if"
1568 " there is no active target");
1573 rc
= pn533_data_exchange_tx_frame(dev
, skb
);
1577 skb_resp_len
= PN533_CMD_DATAEXCH_HEAD_LEN
+
1578 PN533_CMD_DATAEXCH_DATA_MAXLEN
+
1579 PN533_FRAME_TAIL_SIZE
;
1581 skb_resp
= nfc_alloc_recv_skb(skb_resp_len
, GFP_KERNEL
);
1587 in_frame
= (struct pn533_frame
*) skb_resp
->data
;
1588 out_frame
= (struct pn533_frame
*) skb
->data
;
1590 arg
= kmalloc(sizeof(struct pn533_data_exchange_arg
), GFP_KERNEL
);
1596 arg
->skb_resp
= skb_resp
;
1599 arg
->cb_context
= cb_context
;
1601 rc
= pn533_send_cmd_frame_async(dev
, out_frame
, in_frame
, skb_resp_len
,
1602 pn533_data_exchange_complete
, arg
,
1605 nfc_dev_err(&dev
->interface
->dev
, "Error %d when trying to"
1606 " perform data_exchange", rc
);
1615 kfree_skb(skb_resp
);
1621 static void pn533_wq_mi_recv(struct work_struct
*work
)
1623 struct pn533
*dev
= container_of(work
, struct pn533
, mi_work
);
1624 struct sk_buff
*skb_cmd
;
1625 struct pn533_data_exchange_arg
*arg
= dev
->cmd_complete_arg
;
1626 struct pn533_frame
*out_frame
, *in_frame
;
1627 struct sk_buff
*skb_resp
;
1631 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1633 /* This is a zero payload size skb */
1634 skb_cmd
= alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN
+ PN533_FRAME_TAIL_SIZE
,
1636 if (skb_cmd
== NULL
)
1639 skb_reserve(skb_cmd
, PN533_CMD_DATAEXCH_HEAD_LEN
);
1641 rc
= pn533_data_exchange_tx_frame(dev
, skb_cmd
);
1645 skb_resp_len
= PN533_CMD_DATAEXCH_HEAD_LEN
+
1646 PN533_CMD_DATAEXCH_DATA_MAXLEN
+
1647 PN533_FRAME_TAIL_SIZE
;
1648 skb_resp
= alloc_skb(skb_resp_len
, GFP_KERNEL
);
1654 in_frame
= (struct pn533_frame
*) skb_resp
->data
;
1655 out_frame
= (struct pn533_frame
*) skb_cmd
->data
;
1657 arg
->skb_resp
= skb_resp
;
1658 arg
->skb_out
= skb_cmd
;
1660 rc
= __pn533_send_cmd_frame_async(dev
, out_frame
, in_frame
,
1662 pn533_data_exchange_complete
,
1663 dev
->cmd_complete_arg
, GFP_KERNEL
);
1667 nfc_dev_err(&dev
->interface
->dev
, "Error %d when trying to"
1668 " perform data_exchange", rc
);
1670 kfree_skb(skb_resp
);
1676 pn533_send_ack(dev
, GFP_KERNEL
);
1683 static int pn533_set_configuration(struct pn533
*dev
, u8 cfgitem
, u8
*cfgdata
,
1689 nfc_dev_dbg(&dev
->interface
->dev
, "%s", __func__
);
1691 pn533_tx_frame_init(dev
->out_frame
, PN533_CMD_RF_CONFIGURATION
);
1693 params
= PN533_FRAME_CMD_PARAMS_PTR(dev
->out_frame
);
1694 params
[0] = cfgitem
;
1695 memcpy(¶ms
[1], cfgdata
, cfgdata_len
);
1696 dev
->out_frame
->datalen
+= (1 + cfgdata_len
);
1698 pn533_tx_frame_finish(dev
->out_frame
);
1700 rc
= pn533_send_cmd_frame_sync(dev
, dev
->out_frame
, dev
->in_frame
,
1706 struct nfc_ops pn533_nfc_ops
= {
1709 .dep_link_up
= pn533_dep_link_up
,
1710 .dep_link_down
= pn533_dep_link_down
,
1711 .start_poll
= pn533_start_poll
,
1712 .stop_poll
= pn533_stop_poll
,
1713 .activate_target
= pn533_activate_target
,
1714 .deactivate_target
= pn533_deactivate_target
,
1715 .data_exchange
= pn533_data_exchange
,
1718 static int pn533_probe(struct usb_interface
*interface
,
1719 const struct usb_device_id
*id
)
1721 struct pn533_fw_version
*fw_ver
;
1723 struct usb_host_interface
*iface_desc
;
1724 struct usb_endpoint_descriptor
*endpoint
;
1725 struct pn533_config_max_retries max_retries
;
1726 int in_endpoint
= 0;
1727 int out_endpoint
= 0;
1732 dev
= kzalloc(sizeof(*dev
), GFP_KERNEL
);
1736 dev
->udev
= usb_get_dev(interface_to_usbdev(interface
));
1737 dev
->interface
= interface
;
1738 sema_init(&dev
->cmd_lock
, 1);
1740 iface_desc
= interface
->cur_altsetting
;
1741 for (i
= 0; i
< iface_desc
->desc
.bNumEndpoints
; ++i
) {
1742 endpoint
= &iface_desc
->endpoint
[i
].desc
;
1744 if (!in_endpoint
&& usb_endpoint_is_bulk_in(endpoint
)) {
1745 dev
->in_maxlen
= le16_to_cpu(endpoint
->wMaxPacketSize
);
1746 in_endpoint
= endpoint
->bEndpointAddress
;
1749 if (!out_endpoint
&& usb_endpoint_is_bulk_out(endpoint
)) {
1751 le16_to_cpu(endpoint
->wMaxPacketSize
);
1752 out_endpoint
= endpoint
->bEndpointAddress
;
1756 if (!in_endpoint
|| !out_endpoint
) {
1757 nfc_dev_err(&interface
->dev
, "Could not find bulk-in or"
1758 " bulk-out endpoint");
1763 dev
->in_frame
= kmalloc(dev
->in_maxlen
, GFP_KERNEL
);
1764 dev
->in_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1765 dev
->out_frame
= kmalloc(dev
->out_maxlen
, GFP_KERNEL
);
1766 dev
->out_urb
= usb_alloc_urb(0, GFP_KERNEL
);
1768 if (!dev
->in_frame
|| !dev
->out_frame
||
1769 !dev
->in_urb
|| !dev
->out_urb
)
1772 usb_fill_bulk_urb(dev
->in_urb
, dev
->udev
,
1773 usb_rcvbulkpipe(dev
->udev
, in_endpoint
),
1774 NULL
, 0, NULL
, dev
);
1775 usb_fill_bulk_urb(dev
->out_urb
, dev
->udev
,
1776 usb_sndbulkpipe(dev
->udev
, out_endpoint
),
1778 pn533_send_complete
, dev
);
1780 INIT_WORK(&dev
->cmd_work
, pn533_wq_cmd_complete
);
1781 INIT_WORK(&dev
->mi_work
, pn533_wq_mi_recv
);
1782 dev
->wq
= alloc_workqueue("pn533",
1783 WQ_NON_REENTRANT
| WQ_UNBOUND
| WQ_MEM_RECLAIM
,
1785 if (dev
->wq
== NULL
)
1788 skb_queue_head_init(&dev
->resp_q
);
1790 usb_set_intfdata(interface
, dev
);
1792 pn533_tx_frame_init(dev
->out_frame
, PN533_CMD_GET_FIRMWARE_VERSION
);
1793 pn533_tx_frame_finish(dev
->out_frame
);
1795 rc
= pn533_send_cmd_frame_sync(dev
, dev
->out_frame
, dev
->in_frame
,
1800 fw_ver
= (struct pn533_fw_version
*)
1801 PN533_FRAME_CMD_PARAMS_PTR(dev
->in_frame
);
1802 nfc_dev_info(&dev
->interface
->dev
, "NXP PN533 firmware ver %d.%d now"
1803 " attached", fw_ver
->ver
, fw_ver
->rev
);
1805 protocols
= NFC_PROTO_JEWEL_MASK
1806 | NFC_PROTO_MIFARE_MASK
| NFC_PROTO_FELICA_MASK
1807 | NFC_PROTO_ISO14443_MASK
1808 | NFC_PROTO_NFC_DEP_MASK
;
1810 dev
->nfc_dev
= nfc_allocate_device(&pn533_nfc_ops
, protocols
,
1811 PN533_CMD_DATAEXCH_HEAD_LEN
,
1812 PN533_FRAME_TAIL_SIZE
);
1816 nfc_set_parent_dev(dev
->nfc_dev
, &interface
->dev
);
1817 nfc_set_drvdata(dev
->nfc_dev
, dev
);
1819 rc
= nfc_register_device(dev
->nfc_dev
);
1823 max_retries
.mx_rty_atr
= PN533_CONFIG_MAX_RETRIES_ENDLESS
;
1824 max_retries
.mx_rty_psl
= 2;
1825 max_retries
.mx_rty_passive_act
= PN533_CONFIG_MAX_RETRIES_NO_RETRY
;
1827 rc
= pn533_set_configuration(dev
, PN533_CFGITEM_MAX_RETRIES
,
1828 (u8
*) &max_retries
, sizeof(max_retries
));
1831 nfc_dev_err(&dev
->interface
->dev
, "Error on setting MAX_RETRIES"
1839 nfc_free_device(dev
->nfc_dev
);
1841 destroy_workqueue(dev
->wq
);
1843 kfree(dev
->in_frame
);
1844 usb_free_urb(dev
->in_urb
);
1845 kfree(dev
->out_frame
);
1846 usb_free_urb(dev
->out_urb
);
1851 static void pn533_disconnect(struct usb_interface
*interface
)
1855 dev
= usb_get_intfdata(interface
);
1856 usb_set_intfdata(interface
, NULL
);
1858 nfc_unregister_device(dev
->nfc_dev
);
1859 nfc_free_device(dev
->nfc_dev
);
1861 usb_kill_urb(dev
->in_urb
);
1862 usb_kill_urb(dev
->out_urb
);
1864 destroy_workqueue(dev
->wq
);
1866 skb_queue_purge(&dev
->resp_q
);
1868 kfree(dev
->in_frame
);
1869 usb_free_urb(dev
->in_urb
);
1870 kfree(dev
->out_frame
);
1871 usb_free_urb(dev
->out_urb
);
1874 nfc_dev_info(&interface
->dev
, "NXP PN533 NFC device disconnected");
1877 static struct usb_driver pn533_driver
= {
1879 .probe
= pn533_probe
,
1880 .disconnect
= pn533_disconnect
,
1881 .id_table
= pn533_table
,
1884 module_usb_driver(pn533_driver
);
1886 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>,"
1887 " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
1888 MODULE_DESCRIPTION("PN533 usb driver ver " VERSION
);
1889 MODULE_VERSION(VERSION
);
1890 MODULE_LICENSE("GPL");