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 #define SONY_VENDOR_ID 0x054c
42 #define PASORI_PRODUCT_ID 0x02e1
44 #define PN533_QUIRKS_TYPE_A BIT(0)
45 #define PN533_QUIRKS_TYPE_F BIT(1)
46 #define PN533_QUIRKS_DEP BIT(2)
47 #define PN533_QUIRKS_RAW_EXCHANGE BIT(3)
49 #define PN533_DEVICE_STD 0x1
50 #define PN533_DEVICE_PASORI 0x2
52 #define PN533_ALL_PROTOCOLS (NFC_PROTO_JEWEL_MASK | NFC_PROTO_MIFARE_MASK |\
53 NFC_PROTO_FELICA_MASK | NFC_PROTO_ISO14443_MASK |\
54 NFC_PROTO_NFC_DEP_MASK |\
55 NFC_PROTO_ISO14443_B_MASK)
57 #define PN533_NO_TYPE_B_PROTOCOLS (NFC_PROTO_JEWEL_MASK | \
58 NFC_PROTO_MIFARE_MASK | \
59 NFC_PROTO_FELICA_MASK | \
60 NFC_PROTO_ISO14443_MASK | \
61 NFC_PROTO_NFC_DEP_MASK)
63 static const struct usb_device_id pn533_table[] = {
64 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
65 .idVendor = PN533_VENDOR_ID,
66 .idProduct = PN533_PRODUCT_ID,
67 .driver_info = PN533_DEVICE_STD,
69 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
70 .idVendor = SCM_VENDOR_ID,
71 .idProduct = SCL3711_PRODUCT_ID,
72 .driver_info = PN533_DEVICE_STD,
74 { .match_flags = USB_DEVICE_ID_MATCH_DEVICE,
75 .idVendor = SONY_VENDOR_ID,
76 .idProduct = PASORI_PRODUCT_ID,
77 .driver_info = PN533_DEVICE_PASORI,
81 MODULE_DEVICE_TABLE(usb, pn533_table);
83 /* How much time we spend listening for initiators */
84 #define PN533_LISTEN_TIME 2
86 /* frame definitions */
87 #define PN533_FRAME_TAIL_SIZE 2
88 #define PN533_FRAME_SIZE(f) (sizeof(struct pn533_frame) + f->datalen + \
89 PN533_FRAME_TAIL_SIZE)
90 #define PN533_FRAME_ACK_SIZE (sizeof(struct pn533_frame) + 1)
91 #define PN533_FRAME_CHECKSUM(f) (f->data[f->datalen])
92 #define PN533_FRAME_POSTAMBLE(f) (f->data[f->datalen + 1])
95 #define PN533_SOF 0x00FF
97 /* frame identifier: in/out/error */
98 #define PN533_FRAME_IDENTIFIER(f) (f->data[0])
99 #define PN533_DIR_OUT 0xD4
100 #define PN533_DIR_IN 0xD5
103 #define PN533_FRAME_CMD(f) (f->data[1])
104 #define PN533_FRAME_CMD_PARAMS_PTR(f) (&f->data[2])
105 #define PN533_FRAME_CMD_PARAMS_LEN(f) (f->datalen - 2)
107 #define PN533_CMD_GET_FIRMWARE_VERSION 0x02
108 #define PN533_CMD_RF_CONFIGURATION 0x32
109 #define PN533_CMD_IN_DATA_EXCHANGE 0x40
110 #define PN533_CMD_IN_COMM_THRU 0x42
111 #define PN533_CMD_IN_LIST_PASSIVE_TARGET 0x4A
112 #define PN533_CMD_IN_ATR 0x50
113 #define PN533_CMD_IN_RELEASE 0x52
114 #define PN533_CMD_IN_JUMP_FOR_DEP 0x56
116 #define PN533_CMD_TG_INIT_AS_TARGET 0x8c
117 #define PN533_CMD_TG_GET_DATA 0x86
118 #define PN533_CMD_TG_SET_DATA 0x8e
120 #define PN533_CMD_RESPONSE(cmd) (cmd + 1)
122 /* PN533 Return codes */
123 #define PN533_CMD_RET_MASK 0x3F
124 #define PN533_CMD_MI_MASK 0x40
125 #define PN533_CMD_RET_SUCCESS 0x00
127 /* PN533 status codes */
128 #define PN533_STATUS_TARGET_RELEASED 0x29
132 typedef int (*pn533_cmd_complete_t) (struct pn533 *dev, void *arg,
133 u8 *params, int params_len);
135 /* structs for pn533 commands */
137 /* PN533_CMD_GET_FIRMWARE_VERSION */
138 struct pn533_fw_version {
145 /* PN533_CMD_RF_CONFIGURATION */
146 #define PN533_CFGITEM_TIMING 0x02
147 #define PN533_CFGITEM_MAX_RETRIES 0x05
148 #define PN533_CFGITEM_PASORI 0x82
150 #define PN533_CONFIG_TIMING_102 0xb
151 #define PN533_CONFIG_TIMING_204 0xc
152 #define PN533_CONFIG_TIMING_409 0xd
153 #define PN533_CONFIG_TIMING_819 0xe
155 #define PN533_CONFIG_MAX_RETRIES_NO_RETRY 0x00
156 #define PN533_CONFIG_MAX_RETRIES_ENDLESS 0xFF
158 struct pn533_config_max_retries {
161 u8 mx_rty_passive_act;
164 struct pn533_config_timing {
170 /* PN533_CMD_IN_LIST_PASSIVE_TARGET */
172 /* felica commands opcode */
173 #define PN533_FELICA_OPC_SENSF_REQ 0
174 #define PN533_FELICA_OPC_SENSF_RES 1
175 /* felica SENSF_REQ parameters */
176 #define PN533_FELICA_SENSF_SC_ALL 0xFFFF
177 #define PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE 0
178 #define PN533_FELICA_SENSF_RC_SYSTEM_CODE 1
179 #define PN533_FELICA_SENSF_RC_ADVANCED_PROTOCOL 2
181 /* type B initiator_data values */
182 #define PN533_TYPE_B_AFI_ALL_FAMILIES 0
183 #define PN533_TYPE_B_POLL_METHOD_TIMESLOT 0
184 #define PN533_TYPE_B_POLL_METHOD_PROBABILISTIC 1
186 union pn533_cmd_poll_initdata {
199 /* Poll modulations */
201 PN533_POLL_MOD_106KBPS_A,
202 PN533_POLL_MOD_212KBPS_FELICA,
203 PN533_POLL_MOD_424KBPS_FELICA,
204 PN533_POLL_MOD_106KBPS_JEWEL,
205 PN533_POLL_MOD_847KBPS_B,
208 __PN533_POLL_MOD_AFTER_LAST,
210 #define PN533_POLL_MOD_MAX (__PN533_POLL_MOD_AFTER_LAST - 1)
212 struct pn533_poll_modulations {
216 union pn533_cmd_poll_initdata initiator_data;
221 const struct pn533_poll_modulations poll_mod[] = {
222 [PN533_POLL_MOD_106KBPS_A] = {
229 [PN533_POLL_MOD_212KBPS_FELICA] = {
233 .initiator_data.felica = {
234 .opcode = PN533_FELICA_OPC_SENSF_REQ,
235 .sc = PN533_FELICA_SENSF_SC_ALL,
236 .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE,
242 [PN533_POLL_MOD_424KBPS_FELICA] = {
246 .initiator_data.felica = {
247 .opcode = PN533_FELICA_OPC_SENSF_REQ,
248 .sc = PN533_FELICA_SENSF_SC_ALL,
249 .rc = PN533_FELICA_SENSF_RC_NO_SYSTEM_CODE,
255 [PN533_POLL_MOD_106KBPS_JEWEL] = {
262 [PN533_POLL_MOD_847KBPS_B] = {
266 .initiator_data.type_b = {
267 .afi = PN533_TYPE_B_AFI_ALL_FAMILIES,
269 PN533_TYPE_B_POLL_METHOD_TIMESLOT,
274 [PN533_LISTEN_MOD] = {
279 /* PN533_CMD_IN_ATR */
281 struct pn533_cmd_activate_param {
286 struct pn533_cmd_activate_response {
298 /* PN533_CMD_IN_JUMP_FOR_DEP */
299 struct pn533_cmd_jump_dep {
306 struct pn533_cmd_jump_dep_response {
320 /* PN533_TG_INIT_AS_TARGET */
321 #define PN533_INIT_TARGET_PASSIVE 0x1
322 #define PN533_INIT_TARGET_DEP 0x2
324 #define PN533_INIT_TARGET_RESP_FRAME_MASK 0x3
325 #define PN533_INIT_TARGET_RESP_ACTIVE 0x1
326 #define PN533_INIT_TARGET_RESP_DEP 0x4
328 struct pn533_cmd_init_target {
337 struct pn533_cmd_init_target_response {
343 struct usb_device *udev;
344 struct usb_interface *interface;
345 struct nfc_dev *nfc_dev;
349 struct pn533_frame *out_frame;
353 struct pn533_frame *in_frame;
355 struct sk_buff_head resp_q;
357 struct workqueue_struct *wq;
358 struct work_struct cmd_work;
359 struct work_struct cmd_complete_work;
360 struct work_struct poll_work;
361 struct work_struct mi_work;
362 struct work_struct tg_work;
363 struct timer_list listen_timer;
364 struct pn533_frame *wq_in_frame;
368 pn533_cmd_complete_t cmd_complete;
369 void *cmd_complete_arg;
370 struct mutex cmd_lock;
373 struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1];
377 u32 listen_protocols;
382 u8 tgt_available_prots;
388 struct list_head cmd_queue;
393 struct list_head queue;
394 struct pn533_frame *out_frame;
395 struct pn533_frame *in_frame;
397 pn533_cmd_complete_t cmd_complete;
410 /* The rule: value + checksum = 0 */
411 static inline u8 pn533_checksum(u8 value)
416 /* The rule: sum(data elements) + checksum = 0 */
417 static u8 pn533_data_checksum(u8 *data, int datalen)
422 for (i = 0; i < datalen; i++)
425 return pn533_checksum(sum);
429 * pn533_tx_frame_ack - create a ack frame
430 * @frame: The frame to be set as ack
432 * Ack is different type of standard frame. As a standard frame, it has
433 * preamble and start_frame. However the checksum of this frame must fail,
434 * i.e. datalen + datalen_checksum must NOT be zero. When the checksum test
435 * fails and datalen = 0 and datalen_checksum = 0xFF, the frame is a ack.
436 * After datalen_checksum field, the postamble is placed.
438 static void pn533_tx_frame_ack(struct pn533_frame *frame)
441 frame->start_frame = cpu_to_be16(PN533_SOF);
443 frame->datalen_checksum = 0xFF;
444 /* data[0] is used as postamble */
448 static void pn533_tx_frame_init(struct pn533_frame *frame, u8 cmd)
451 frame->start_frame = cpu_to_be16(PN533_SOF);
452 PN533_FRAME_IDENTIFIER(frame) = PN533_DIR_OUT;
453 PN533_FRAME_CMD(frame) = cmd;
457 static void pn533_tx_frame_finish(struct pn533_frame *frame)
459 frame->datalen_checksum = pn533_checksum(frame->datalen);
461 PN533_FRAME_CHECKSUM(frame) =
462 pn533_data_checksum(frame->data, frame->datalen);
464 PN533_FRAME_POSTAMBLE(frame) = 0;
467 static bool pn533_rx_frame_is_valid(struct pn533_frame *frame)
471 if (frame->start_frame != cpu_to_be16(PN533_SOF))
474 checksum = pn533_checksum(frame->datalen);
475 if (checksum != frame->datalen_checksum)
478 checksum = pn533_data_checksum(frame->data, frame->datalen);
479 if (checksum != PN533_FRAME_CHECKSUM(frame))
485 static bool pn533_rx_frame_is_ack(struct pn533_frame *frame)
487 if (frame->start_frame != cpu_to_be16(PN533_SOF))
490 if (frame->datalen != 0 || frame->datalen_checksum != 0xFF)
496 static bool pn533_rx_frame_is_cmd_response(struct pn533_frame *frame, u8 cmd)
498 return (PN533_FRAME_CMD(frame) == PN533_CMD_RESPONSE(cmd));
502 static void pn533_wq_cmd_complete(struct work_struct *work)
504 struct pn533 *dev = container_of(work, struct pn533, cmd_complete_work);
505 struct pn533_frame *in_frame;
508 in_frame = dev->wq_in_frame;
510 if (dev->wq_in_error)
511 rc = dev->cmd_complete(dev, dev->cmd_complete_arg, NULL,
514 rc = dev->cmd_complete(dev, dev->cmd_complete_arg,
515 PN533_FRAME_CMD_PARAMS_PTR(in_frame),
516 PN533_FRAME_CMD_PARAMS_LEN(in_frame));
518 if (rc != -EINPROGRESS)
519 queue_work(dev->wq, &dev->cmd_work);
522 static void pn533_recv_response(struct urb *urb)
524 struct pn533 *dev = urb->context;
525 struct pn533_frame *in_frame;
527 dev->wq_in_frame = NULL;
529 switch (urb->status) {
536 nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with"
537 " status: %d", urb->status);
538 dev->wq_in_error = urb->status;
541 nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:"
543 dev->wq_in_error = urb->status;
547 in_frame = dev->in_urb->transfer_buffer;
549 if (!pn533_rx_frame_is_valid(in_frame)) {
550 nfc_dev_err(&dev->interface->dev, "Received an invalid frame");
551 dev->wq_in_error = -EIO;
555 if (!pn533_rx_frame_is_cmd_response(in_frame, dev->cmd)) {
556 nfc_dev_err(&dev->interface->dev, "The received frame is not "
557 "response to the last command");
558 dev->wq_in_error = -EIO;
562 nfc_dev_dbg(&dev->interface->dev, "Received a valid frame");
563 dev->wq_in_error = 0;
564 dev->wq_in_frame = in_frame;
567 queue_work(dev->wq, &dev->cmd_complete_work);
570 static int pn533_submit_urb_for_response(struct pn533 *dev, gfp_t flags)
572 dev->in_urb->complete = pn533_recv_response;
574 return usb_submit_urb(dev->in_urb, flags);
577 static void pn533_recv_ack(struct urb *urb)
579 struct pn533 *dev = urb->context;
580 struct pn533_frame *in_frame;
583 switch (urb->status) {
590 nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with"
591 " status: %d", urb->status);
592 dev->wq_in_error = urb->status;
595 nfc_dev_err(&dev->interface->dev, "Nonzero urb status received:"
597 dev->wq_in_error = urb->status;
601 in_frame = dev->in_urb->transfer_buffer;
603 if (!pn533_rx_frame_is_ack(in_frame)) {
604 nfc_dev_err(&dev->interface->dev, "Received an invalid ack");
605 dev->wq_in_error = -EIO;
609 nfc_dev_dbg(&dev->interface->dev, "Received a valid ack");
611 rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC);
613 nfc_dev_err(&dev->interface->dev, "usb_submit_urb failed with"
615 dev->wq_in_error = rc;
622 dev->wq_in_frame = NULL;
623 queue_work(dev->wq, &dev->cmd_complete_work);
626 static int pn533_submit_urb_for_ack(struct pn533 *dev, gfp_t flags)
628 dev->in_urb->complete = pn533_recv_ack;
630 return usb_submit_urb(dev->in_urb, flags);
633 static int pn533_send_ack(struct pn533 *dev, gfp_t flags)
637 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
639 pn533_tx_frame_ack(dev->out_frame);
641 dev->out_urb->transfer_buffer = dev->out_frame;
642 dev->out_urb->transfer_buffer_length = PN533_FRAME_ACK_SIZE;
643 rc = usb_submit_urb(dev->out_urb, flags);
648 static int __pn533_send_cmd_frame_async(struct pn533 *dev,
649 struct pn533_frame *out_frame,
650 struct pn533_frame *in_frame,
652 pn533_cmd_complete_t cmd_complete,
653 void *arg, gfp_t flags)
657 nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x",
658 PN533_FRAME_CMD(out_frame));
660 dev->cmd = PN533_FRAME_CMD(out_frame);
661 dev->cmd_complete = cmd_complete;
662 dev->cmd_complete_arg = arg;
664 dev->out_urb->transfer_buffer = out_frame;
665 dev->out_urb->transfer_buffer_length =
666 PN533_FRAME_SIZE(out_frame);
668 dev->in_urb->transfer_buffer = in_frame;
669 dev->in_urb->transfer_buffer_length = in_frame_len;
671 rc = usb_submit_urb(dev->out_urb, flags);
675 rc = pn533_submit_urb_for_ack(dev, flags);
682 usb_unlink_urb(dev->out_urb);
686 static void pn533_wq_cmd(struct work_struct *work)
688 struct pn533 *dev = container_of(work, struct pn533, cmd_work);
689 struct pn533_cmd *cmd;
691 mutex_lock(&dev->cmd_lock);
693 if (list_empty(&dev->cmd_queue)) {
694 dev->cmd_pending = 0;
695 mutex_unlock(&dev->cmd_lock);
699 cmd = list_first_entry(&dev->cmd_queue, struct pn533_cmd, queue);
701 mutex_unlock(&dev->cmd_lock);
703 __pn533_send_cmd_frame_async(dev, cmd->out_frame, cmd->in_frame,
704 cmd->in_frame_len, cmd->cmd_complete,
705 cmd->arg, cmd->flags);
707 list_del(&cmd->queue);
711 static int pn533_send_cmd_frame_async(struct pn533 *dev,
712 struct pn533_frame *out_frame,
713 struct pn533_frame *in_frame,
715 pn533_cmd_complete_t cmd_complete,
716 void *arg, gfp_t flags)
718 struct pn533_cmd *cmd;
721 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
723 mutex_lock(&dev->cmd_lock);
725 if (!dev->cmd_pending) {
726 rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame,
727 in_frame_len, cmd_complete,
730 dev->cmd_pending = 1;
735 nfc_dev_dbg(&dev->interface->dev, "%s Queueing command", __func__);
737 cmd = kzalloc(sizeof(struct pn533_cmd), flags);
743 INIT_LIST_HEAD(&cmd->queue);
744 cmd->out_frame = out_frame;
745 cmd->in_frame = in_frame;
746 cmd->in_frame_len = in_frame_len;
747 cmd->cmd_complete = cmd_complete;
751 list_add_tail(&cmd->queue, &dev->cmd_queue);
754 mutex_unlock(&dev->cmd_lock);
759 struct pn533_sync_cmd_response {
761 struct completion done;
764 static int pn533_sync_cmd_complete(struct pn533 *dev, void *_arg,
765 u8 *params, int params_len)
767 struct pn533_sync_cmd_response *arg = _arg;
769 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
773 if (params_len < 0) /* error */
774 arg->rc = params_len;
776 complete(&arg->done);
781 static int pn533_send_cmd_frame_sync(struct pn533 *dev,
782 struct pn533_frame *out_frame,
783 struct pn533_frame *in_frame,
787 struct pn533_sync_cmd_response arg;
789 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
791 init_completion(&arg.done);
793 rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, in_frame_len,
794 pn533_sync_cmd_complete, &arg, GFP_KERNEL);
798 wait_for_completion(&arg.done);
803 static void pn533_send_complete(struct urb *urb)
805 struct pn533 *dev = urb->context;
807 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
809 switch (urb->status) {
816 nfc_dev_dbg(&dev->interface->dev, "Urb shutting down with"
817 " status: %d", urb->status);
820 nfc_dev_dbg(&dev->interface->dev, "Nonzero urb status received:"
825 struct pn533_target_type_a {
833 #define PN533_TYPE_A_SENS_RES_NFCID1(x) ((u8)((be16_to_cpu(x) & 0x00C0) >> 6))
834 #define PN533_TYPE_A_SENS_RES_SSD(x) ((u8)((be16_to_cpu(x) & 0x001F) >> 0))
835 #define PN533_TYPE_A_SENS_RES_PLATCONF(x) ((u8)((be16_to_cpu(x) & 0x0F00) >> 8))
837 #define PN533_TYPE_A_SENS_RES_SSD_JEWEL 0x00
838 #define PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL 0x0C
840 #define PN533_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
841 #define PN533_TYPE_A_SEL_CASCADE(x) (((x) & 0x04) >> 2)
843 #define PN533_TYPE_A_SEL_PROT_MIFARE 0
844 #define PN533_TYPE_A_SEL_PROT_ISO14443 1
845 #define PN533_TYPE_A_SEL_PROT_DEP 2
846 #define PN533_TYPE_A_SEL_PROT_ISO14443_DEP 3
848 static bool pn533_target_type_a_is_valid(struct pn533_target_type_a *type_a,
854 if (target_data_len < sizeof(struct pn533_target_type_a))
857 /* The lenght check of nfcid[] and ats[] are not being performed because
858 the values are not being used */
860 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
861 ssd = PN533_TYPE_A_SENS_RES_SSD(type_a->sens_res);
862 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(type_a->sens_res);
864 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
865 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
866 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
867 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
870 /* Requirements 4.8.2.1, 4.8.2.3, 4.8.2.5 and 4.8.2.7 from NFC Forum */
871 if (PN533_TYPE_A_SEL_CASCADE(type_a->sel_res) != 0)
877 static int pn533_target_found_type_a(struct nfc_target *nfc_tgt, u8 *tgt_data,
880 struct pn533_target_type_a *tgt_type_a;
882 tgt_type_a = (struct pn533_target_type_a *) tgt_data;
884 if (!pn533_target_type_a_is_valid(tgt_type_a, tgt_data_len))
887 switch (PN533_TYPE_A_SEL_PROT(tgt_type_a->sel_res)) {
888 case PN533_TYPE_A_SEL_PROT_MIFARE:
889 nfc_tgt->supported_protocols = NFC_PROTO_MIFARE_MASK;
891 case PN533_TYPE_A_SEL_PROT_ISO14443:
892 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK;
894 case PN533_TYPE_A_SEL_PROT_DEP:
895 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
897 case PN533_TYPE_A_SEL_PROT_ISO14443_DEP:
898 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_MASK |
899 NFC_PROTO_NFC_DEP_MASK;
903 nfc_tgt->sens_res = be16_to_cpu(tgt_type_a->sens_res);
904 nfc_tgt->sel_res = tgt_type_a->sel_res;
905 nfc_tgt->nfcid1_len = tgt_type_a->nfcid_len;
906 memcpy(nfc_tgt->nfcid1, tgt_type_a->nfcid_data, nfc_tgt->nfcid1_len);
911 struct pn533_target_felica {
920 #define PN533_FELICA_SENSF_NFCID2_DEP_B1 0x01
921 #define PN533_FELICA_SENSF_NFCID2_DEP_B2 0xFE
923 static bool pn533_target_felica_is_valid(struct pn533_target_felica *felica,
926 if (target_data_len < sizeof(struct pn533_target_felica))
929 if (felica->opcode != PN533_FELICA_OPC_SENSF_RES)
935 static int pn533_target_found_felica(struct nfc_target *nfc_tgt, u8 *tgt_data,
938 struct pn533_target_felica *tgt_felica;
940 tgt_felica = (struct pn533_target_felica *) tgt_data;
942 if (!pn533_target_felica_is_valid(tgt_felica, tgt_data_len))
945 if (tgt_felica->nfcid2[0] == PN533_FELICA_SENSF_NFCID2_DEP_B1 &&
946 tgt_felica->nfcid2[1] ==
947 PN533_FELICA_SENSF_NFCID2_DEP_B2)
948 nfc_tgt->supported_protocols = NFC_PROTO_NFC_DEP_MASK;
950 nfc_tgt->supported_protocols = NFC_PROTO_FELICA_MASK;
952 memcpy(nfc_tgt->sensf_res, &tgt_felica->opcode, 9);
953 nfc_tgt->sensf_res_len = 9;
958 struct pn533_target_jewel {
963 static bool pn533_target_jewel_is_valid(struct pn533_target_jewel *jewel,
969 if (target_data_len < sizeof(struct pn533_target_jewel))
972 /* Requirement 4.6.3.3 from NFC Forum Digital Spec */
973 ssd = PN533_TYPE_A_SENS_RES_SSD(jewel->sens_res);
974 platconf = PN533_TYPE_A_SENS_RES_PLATCONF(jewel->sens_res);
976 if ((ssd == PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
977 platconf != PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL) ||
978 (ssd != PN533_TYPE_A_SENS_RES_SSD_JEWEL &&
979 platconf == PN533_TYPE_A_SENS_RES_PLATCONF_JEWEL))
985 static int pn533_target_found_jewel(struct nfc_target *nfc_tgt, u8 *tgt_data,
988 struct pn533_target_jewel *tgt_jewel;
990 tgt_jewel = (struct pn533_target_jewel *) tgt_data;
992 if (!pn533_target_jewel_is_valid(tgt_jewel, tgt_data_len))
995 nfc_tgt->supported_protocols = NFC_PROTO_JEWEL_MASK;
996 nfc_tgt->sens_res = be16_to_cpu(tgt_jewel->sens_res);
997 nfc_tgt->nfcid1_len = 4;
998 memcpy(nfc_tgt->nfcid1, tgt_jewel->jewelid, nfc_tgt->nfcid1_len);
1003 struct pn533_type_b_prot_info {
1009 #define PN533_TYPE_B_PROT_FCSI(x) (((x) & 0xF0) >> 4)
1010 #define PN533_TYPE_B_PROT_TYPE(x) (((x) & 0x0F) >> 0)
1011 #define PN533_TYPE_B_PROT_TYPE_RFU_MASK 0x8
1013 struct pn533_type_b_sens_res {
1017 struct pn533_type_b_prot_info prot_info;
1020 #define PN533_TYPE_B_OPC_SENSB_RES 0x50
1022 struct pn533_target_type_b {
1023 struct pn533_type_b_sens_res sensb_res;
1028 static bool pn533_target_type_b_is_valid(struct pn533_target_type_b *type_b,
1029 int target_data_len)
1031 if (target_data_len < sizeof(struct pn533_target_type_b))
1034 if (type_b->sensb_res.opcode != PN533_TYPE_B_OPC_SENSB_RES)
1037 if (PN533_TYPE_B_PROT_TYPE(type_b->sensb_res.prot_info.fsci_type) &
1038 PN533_TYPE_B_PROT_TYPE_RFU_MASK)
1044 static int pn533_target_found_type_b(struct nfc_target *nfc_tgt, u8 *tgt_data,
1047 struct pn533_target_type_b *tgt_type_b;
1049 tgt_type_b = (struct pn533_target_type_b *) tgt_data;
1051 if (!pn533_target_type_b_is_valid(tgt_type_b, tgt_data_len))
1054 nfc_tgt->supported_protocols = NFC_PROTO_ISO14443_B_MASK;
1059 struct pn533_poll_response {
1065 static int pn533_target_found(struct pn533 *dev,
1066 struct pn533_poll_response *resp, int resp_len)
1068 int target_data_len;
1069 struct nfc_target nfc_tgt;
1072 nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__,
1073 dev->poll_mod_curr);
1078 memset(&nfc_tgt, 0, sizeof(struct nfc_target));
1080 target_data_len = resp_len - sizeof(struct pn533_poll_response);
1082 switch (dev->poll_mod_curr) {
1083 case PN533_POLL_MOD_106KBPS_A:
1084 rc = pn533_target_found_type_a(&nfc_tgt, resp->target_data,
1087 case PN533_POLL_MOD_212KBPS_FELICA:
1088 case PN533_POLL_MOD_424KBPS_FELICA:
1089 rc = pn533_target_found_felica(&nfc_tgt, resp->target_data,
1092 case PN533_POLL_MOD_106KBPS_JEWEL:
1093 rc = pn533_target_found_jewel(&nfc_tgt, resp->target_data,
1096 case PN533_POLL_MOD_847KBPS_B:
1097 rc = pn533_target_found_type_b(&nfc_tgt, resp->target_data,
1101 nfc_dev_err(&dev->interface->dev, "Unknown current poll"
1109 if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
1110 nfc_dev_dbg(&dev->interface->dev, "The target found does not"
1111 " have the desired protocol");
1115 nfc_dev_dbg(&dev->interface->dev, "Target found - supported protocols: "
1116 "0x%x", nfc_tgt.supported_protocols);
1118 dev->tgt_available_prots = nfc_tgt.supported_protocols;
1120 nfc_targets_found(dev->nfc_dev, &nfc_tgt, 1);
1125 static inline void pn533_poll_next_mod(struct pn533 *dev)
1127 dev->poll_mod_curr = (dev->poll_mod_curr + 1) % dev->poll_mod_count;
1130 static void pn533_poll_reset_mod_list(struct pn533 *dev)
1132 dev->poll_mod_count = 0;
1135 static void pn533_poll_add_mod(struct pn533 *dev, u8 mod_index)
1137 dev->poll_mod_active[dev->poll_mod_count] =
1138 (struct pn533_poll_modulations *) &poll_mod[mod_index];
1139 dev->poll_mod_count++;
1142 static void pn533_poll_create_mod_list(struct pn533 *dev,
1143 u32 im_protocols, u32 tm_protocols)
1145 pn533_poll_reset_mod_list(dev);
1147 if (im_protocols & NFC_PROTO_MIFARE_MASK
1148 || im_protocols & NFC_PROTO_ISO14443_MASK
1149 || im_protocols & NFC_PROTO_NFC_DEP_MASK)
1150 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_A);
1152 if (im_protocols & NFC_PROTO_FELICA_MASK
1153 || im_protocols & NFC_PROTO_NFC_DEP_MASK) {
1154 pn533_poll_add_mod(dev, PN533_POLL_MOD_212KBPS_FELICA);
1155 pn533_poll_add_mod(dev, PN533_POLL_MOD_424KBPS_FELICA);
1158 if (im_protocols & NFC_PROTO_JEWEL_MASK)
1159 pn533_poll_add_mod(dev, PN533_POLL_MOD_106KBPS_JEWEL);
1161 if (im_protocols & NFC_PROTO_ISO14443_B_MASK)
1162 pn533_poll_add_mod(dev, PN533_POLL_MOD_847KBPS_B);
1165 pn533_poll_add_mod(dev, PN533_LISTEN_MOD);
1168 static int pn533_start_poll_complete(struct pn533 *dev, void *arg,
1169 u8 *params, int params_len)
1171 struct pn533_poll_response *resp;
1174 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1176 resp = (struct pn533_poll_response *) params;
1178 rc = pn533_target_found(dev, resp, params_len);
1180 /* We must stop the poll after a valid target found */
1182 pn533_poll_reset_mod_list(dev);
1190 static int pn533_init_target_frame(struct pn533_frame *frame,
1191 u8 *gb, size_t gb_len)
1193 struct pn533_cmd_init_target *cmd;
1195 u8 felica_params[18] = {0x1, 0xfe, /* DEP */
1196 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, /* random */
1197 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0,
1198 0xff, 0xff}; /* System code */
1199 u8 mifare_params[6] = {0x1, 0x1, /* SENS_RES */
1201 0x40}; /* SEL_RES for DEP */
1203 cmd_len = sizeof(struct pn533_cmd_init_target) + gb_len + 1;
1204 cmd = kzalloc(cmd_len, GFP_KERNEL);
1208 pn533_tx_frame_init(frame, PN533_CMD_TG_INIT_AS_TARGET);
1210 /* DEP support only */
1211 cmd->mode |= PN533_INIT_TARGET_DEP;
1214 memcpy(cmd->felica, felica_params, 18);
1215 get_random_bytes(cmd->felica + 2, 6);
1218 memset(cmd->nfcid3, 0, 10);
1219 memcpy(cmd->nfcid3, cmd->felica, 8);
1222 memcpy(cmd->mifare, mifare_params, 6);
1225 cmd->gb_len = gb_len;
1226 memcpy(cmd->gb, gb, gb_len);
1229 cmd->gb[gb_len] = 0;
1231 memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), cmd, cmd_len);
1233 frame->datalen += cmd_len;
1235 pn533_tx_frame_finish(frame);
1242 #define PN533_CMD_DATAEXCH_HEAD_LEN (sizeof(struct pn533_frame) + 3)
1243 #define PN533_CMD_DATAEXCH_DATA_MAXLEN 262
1244 static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,
1245 u8 *params, int params_len)
1247 struct sk_buff *skb_resp = arg;
1248 struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data;
1250 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1252 if (params_len < 0) {
1253 nfc_dev_err(&dev->interface->dev,
1254 "Error %d when starting as a target",
1260 if (params_len > 0 && params[0] != 0) {
1261 nfc_tm_deactivated(dev->nfc_dev);
1265 kfree_skb(skb_resp);
1269 skb_put(skb_resp, PN533_FRAME_SIZE(in_frame));
1270 skb_pull(skb_resp, PN533_CMD_DATAEXCH_HEAD_LEN);
1271 skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_SIZE);
1273 return nfc_tm_data_received(dev->nfc_dev, skb_resp);
1276 static void pn533_wq_tg_get_data(struct work_struct *work)
1278 struct pn533 *dev = container_of(work, struct pn533, tg_work);
1279 struct pn533_frame *in_frame;
1280 struct sk_buff *skb_resp;
1281 size_t skb_resp_len;
1283 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1285 skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN +
1286 PN533_CMD_DATAEXCH_DATA_MAXLEN +
1287 PN533_FRAME_TAIL_SIZE;
1289 skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL);
1293 in_frame = (struct pn533_frame *)skb_resp->data;
1295 pn533_tx_frame_init(dev->out_frame, PN533_CMD_TG_GET_DATA);
1296 pn533_tx_frame_finish(dev->out_frame);
1298 pn533_send_cmd_frame_async(dev, dev->out_frame, in_frame,
1300 pn533_tm_get_data_complete,
1301 skb_resp, GFP_KERNEL);
1306 #define ATR_REQ_GB_OFFSET 17
1307 static int pn533_init_target_complete(struct pn533 *dev, void *arg,
1308 u8 *params, int params_len)
1310 struct pn533_cmd_init_target_response *resp;
1311 u8 frame, comm_mode = NFC_COMM_PASSIVE, *gb;
1315 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1317 if (params_len < 0) {
1318 nfc_dev_err(&dev->interface->dev,
1319 "Error %d when starting as a target",
1325 if (params_len < ATR_REQ_GB_OFFSET + 1)
1328 resp = (struct pn533_cmd_init_target_response *) params;
1330 nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x param len %d\n",
1331 resp->mode, params_len);
1333 frame = resp->mode & PN533_INIT_TARGET_RESP_FRAME_MASK;
1334 if (frame == PN533_INIT_TARGET_RESP_ACTIVE)
1335 comm_mode = NFC_COMM_ACTIVE;
1337 /* Again, only DEP */
1338 if ((resp->mode & PN533_INIT_TARGET_RESP_DEP) == 0)
1341 gb = resp->cmd + ATR_REQ_GB_OFFSET;
1342 gb_len = params_len - (ATR_REQ_GB_OFFSET + 1);
1344 rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK,
1345 comm_mode, gb, gb_len);
1347 nfc_dev_err(&dev->interface->dev,
1348 "Error when signaling target activation");
1354 queue_work(dev->wq, &dev->tg_work);
1359 static void pn533_listen_mode_timer(unsigned long data)
1361 struct pn533 *dev = (struct pn533 *) data;
1363 nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout");
1365 /* An ack will cancel the last issued command (poll) */
1366 pn533_send_ack(dev, GFP_ATOMIC);
1368 dev->cancel_listen = 1;
1370 pn533_poll_next_mod(dev);
1372 queue_work(dev->wq, &dev->poll_work);
1375 static int pn533_poll_complete(struct pn533 *dev, void *arg,
1376 u8 *params, int params_len)
1378 struct pn533_poll_modulations *cur_mod;
1381 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1383 if (params_len == -ENOENT) {
1384 if (dev->poll_mod_count != 0)
1387 nfc_dev_err(&dev->interface->dev,
1388 "Polling operation has been stopped");
1393 if (params_len < 0) {
1394 nfc_dev_err(&dev->interface->dev,
1395 "Error %d when running poll", params_len);
1400 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1402 if (cur_mod->len == 0) {
1403 del_timer(&dev->listen_timer);
1405 return pn533_init_target_complete(dev, arg, params, params_len);
1407 rc = pn533_start_poll_complete(dev, arg, params, params_len);
1412 pn533_poll_next_mod(dev);
1414 queue_work(dev->wq, &dev->poll_work);
1419 pn533_poll_reset_mod_list(dev);
1420 dev->poll_protocols = 0;
1424 static void pn533_build_poll_frame(struct pn533 *dev,
1425 struct pn533_frame *frame,
1426 struct pn533_poll_modulations *mod)
1428 nfc_dev_dbg(&dev->interface->dev, "mod len %d\n", mod->len);
1430 if (mod->len == 0) {
1432 pn533_init_target_frame(frame, dev->gb, dev->gb_len);
1435 pn533_tx_frame_init(frame, PN533_CMD_IN_LIST_PASSIVE_TARGET);
1437 memcpy(PN533_FRAME_CMD_PARAMS_PTR(frame), &mod->data, mod->len);
1438 frame->datalen += mod->len;
1440 pn533_tx_frame_finish(frame);
1444 static int pn533_send_poll_frame(struct pn533 *dev)
1446 struct pn533_poll_modulations *cur_mod;
1449 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1451 pn533_build_poll_frame(dev, dev->out_frame, cur_mod);
1453 rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame,
1454 dev->in_maxlen, pn533_poll_complete,
1457 nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc);
1462 static void pn533_wq_poll(struct work_struct *work)
1464 struct pn533 *dev = container_of(work, struct pn533, poll_work);
1465 struct pn533_poll_modulations *cur_mod;
1468 cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
1470 nfc_dev_dbg(&dev->interface->dev,
1471 "%s cancel_listen %d modulation len %d",
1472 __func__, dev->cancel_listen, cur_mod->len);
1474 if (dev->cancel_listen == 1) {
1475 dev->cancel_listen = 0;
1476 usb_kill_urb(dev->in_urb);
1479 rc = pn533_send_poll_frame(dev);
1483 if (cur_mod->len == 0 && dev->poll_mod_count > 1)
1484 mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
1489 static int pn533_start_poll(struct nfc_dev *nfc_dev,
1490 u32 im_protocols, u32 tm_protocols)
1492 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1494 nfc_dev_dbg(&dev->interface->dev,
1495 "%s: im protocols 0x%x tm protocols 0x%x",
1496 __func__, im_protocols, tm_protocols);
1498 if (dev->tgt_active_prot) {
1499 nfc_dev_err(&dev->interface->dev,
1500 "Cannot poll with a target already activated");
1504 if (dev->tgt_mode) {
1505 nfc_dev_err(&dev->interface->dev,
1506 "Cannot poll while already being activated");
1511 dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
1512 if (dev->gb == NULL)
1516 dev->poll_mod_curr = 0;
1517 pn533_poll_create_mod_list(dev, im_protocols, tm_protocols);
1518 dev->poll_protocols = im_protocols;
1519 dev->listen_protocols = tm_protocols;
1521 return pn533_send_poll_frame(dev);
1524 static void pn533_stop_poll(struct nfc_dev *nfc_dev)
1526 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1528 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1530 del_timer(&dev->listen_timer);
1532 if (!dev->poll_mod_count) {
1533 nfc_dev_dbg(&dev->interface->dev, "Polling operation was not"
1538 /* An ack will cancel the last issued command (poll) */
1539 pn533_send_ack(dev, GFP_KERNEL);
1541 /* prevent pn533_start_poll_complete to issue a new poll meanwhile */
1542 usb_kill_urb(dev->in_urb);
1544 pn533_poll_reset_mod_list(dev);
1547 static int pn533_activate_target_nfcdep(struct pn533 *dev)
1549 struct pn533_cmd_activate_param param;
1550 struct pn533_cmd_activate_response *resp;
1554 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1556 pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_ATR);
1560 memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), ¶m,
1561 sizeof(struct pn533_cmd_activate_param));
1562 dev->out_frame->datalen += sizeof(struct pn533_cmd_activate_param);
1564 pn533_tx_frame_finish(dev->out_frame);
1566 rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
1571 resp = (struct pn533_cmd_activate_response *)
1572 PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame);
1573 rc = resp->status & PN533_CMD_RET_MASK;
1574 if (rc != PN533_CMD_RET_SUCCESS)
1577 /* ATR_RES general bytes are located at offset 16 */
1578 gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 16;
1579 rc = nfc_set_remote_general_bytes(dev->nfc_dev, resp->gt, gt_len);
1584 static int pn533_activate_target(struct nfc_dev *nfc_dev,
1585 struct nfc_target *target, u32 protocol)
1587 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1590 nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__,
1593 if (dev->poll_mod_count) {
1594 nfc_dev_err(&dev->interface->dev, "Cannot activate while"
1599 if (dev->tgt_active_prot) {
1600 nfc_dev_err(&dev->interface->dev, "There is already an active"
1605 if (!dev->tgt_available_prots) {
1606 nfc_dev_err(&dev->interface->dev, "There is no available target"
1611 if (!(dev->tgt_available_prots & (1 << protocol))) {
1612 nfc_dev_err(&dev->interface->dev, "The target does not support"
1613 " the requested protocol %u", protocol);
1617 if (protocol == NFC_PROTO_NFC_DEP) {
1618 rc = pn533_activate_target_nfcdep(dev);
1620 nfc_dev_err(&dev->interface->dev, "Error %d when"
1621 " activating target with"
1622 " NFC_DEP protocol", rc);
1627 dev->tgt_active_prot = protocol;
1628 dev->tgt_available_prots = 0;
1633 static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
1634 struct nfc_target *target)
1636 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1641 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1643 if (!dev->tgt_active_prot) {
1644 nfc_dev_err(&dev->interface->dev, "There is no active target");
1648 dev->tgt_active_prot = 0;
1650 skb_queue_purge(&dev->resp_q);
1652 pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_RELEASE);
1655 memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), &tg, sizeof(u8));
1656 dev->out_frame->datalen += sizeof(u8);
1658 pn533_tx_frame_finish(dev->out_frame);
1660 rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
1663 nfc_dev_err(&dev->interface->dev, "Error when sending release"
1664 " command to the controller");
1668 status = PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame)[0];
1669 rc = status & PN533_CMD_RET_MASK;
1670 if (rc != PN533_CMD_RET_SUCCESS)
1671 nfc_dev_err(&dev->interface->dev, "Error 0x%x when releasing"
1678 static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
1679 u8 *params, int params_len)
1681 struct pn533_cmd_jump_dep *cmd;
1682 struct pn533_cmd_jump_dep_response *resp;
1683 struct nfc_target nfc_target;
1687 if (params_len == -ENOENT) {
1688 nfc_dev_dbg(&dev->interface->dev, "");
1692 if (params_len < 0) {
1693 nfc_dev_err(&dev->interface->dev,
1694 "Error %d when bringing DEP link up",
1699 if (dev->tgt_available_prots &&
1700 !(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) {
1701 nfc_dev_err(&dev->interface->dev,
1702 "The target does not support DEP");
1706 resp = (struct pn533_cmd_jump_dep_response *) params;
1707 cmd = (struct pn533_cmd_jump_dep *) arg;
1708 rc = resp->status & PN533_CMD_RET_MASK;
1709 if (rc != PN533_CMD_RET_SUCCESS) {
1710 nfc_dev_err(&dev->interface->dev,
1711 "Bringing DEP link up failed %d", rc);
1715 if (!dev->tgt_available_prots) {
1716 nfc_dev_dbg(&dev->interface->dev, "Creating new target");
1718 nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
1719 nfc_target.nfcid1_len = 10;
1720 memcpy(nfc_target.nfcid1, resp->nfcid3t, nfc_target.nfcid1_len);
1721 rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
1725 dev->tgt_available_prots = 0;
1728 dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
1730 /* ATR_RES general bytes are located at offset 17 */
1731 target_gt_len = PN533_FRAME_CMD_PARAMS_LEN(dev->in_frame) - 17;
1732 rc = nfc_set_remote_general_bytes(dev->nfc_dev,
1733 resp->gt, target_gt_len);
1735 rc = nfc_dep_link_is_up(dev->nfc_dev,
1736 dev->nfc_dev->targets[0].idx,
1737 !cmd->active, NFC_RF_INITIATOR);
1742 static int pn533_mod_to_baud(struct pn533 *dev)
1744 switch (dev->poll_mod_curr) {
1745 case PN533_POLL_MOD_106KBPS_A:
1747 case PN533_POLL_MOD_212KBPS_FELICA:
1749 case PN533_POLL_MOD_424KBPS_FELICA:
1756 #define PASSIVE_DATA_LEN 5
1757 static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
1758 u8 comm_mode, u8* gb, size_t gb_len)
1760 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1761 struct pn533_cmd_jump_dep *cmd;
1762 u8 cmd_len, *data_ptr;
1763 u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
1766 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1768 if (dev->poll_mod_count) {
1769 nfc_dev_err(&dev->interface->dev,
1770 "Cannot bring the DEP link up while polling");
1774 if (dev->tgt_active_prot) {
1775 nfc_dev_err(&dev->interface->dev,
1776 "There is already an active target");
1780 baud = pn533_mod_to_baud(dev);
1782 nfc_dev_err(&dev->interface->dev,
1783 "Invalid curr modulation %d", dev->poll_mod_curr);
1787 cmd_len = sizeof(struct pn533_cmd_jump_dep) + gb_len;
1788 if (comm_mode == NFC_COMM_PASSIVE)
1789 cmd_len += PASSIVE_DATA_LEN;
1791 cmd = kzalloc(cmd_len, GFP_KERNEL);
1795 pn533_tx_frame_init(dev->out_frame, PN533_CMD_IN_JUMP_FOR_DEP);
1797 cmd->active = !comm_mode;
1800 data_ptr = cmd->data;
1801 if (comm_mode == NFC_COMM_PASSIVE && cmd->baud > 0) {
1802 memcpy(data_ptr, passive_data, PASSIVE_DATA_LEN);
1804 data_ptr += PASSIVE_DATA_LEN;
1807 if (gb != NULL && gb_len > 0) {
1808 cmd->next |= 4; /* We have some Gi */
1809 memcpy(data_ptr, gb, gb_len);
1814 memcpy(PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame), cmd, cmd_len);
1815 dev->out_frame->datalen += cmd_len;
1817 pn533_tx_frame_finish(dev->out_frame);
1819 rc = pn533_send_cmd_frame_async(dev, dev->out_frame, dev->in_frame,
1820 dev->in_maxlen, pn533_in_dep_link_up_complete,
1832 static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
1834 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
1836 pn533_poll_reset_mod_list(dev);
1838 if (dev->tgt_mode || dev->tgt_active_prot) {
1839 pn533_send_ack(dev, GFP_KERNEL);
1840 usb_kill_urb(dev->in_urb);
1843 dev->tgt_active_prot = 0;
1846 skb_queue_purge(&dev->resp_q);
1851 static int pn533_build_tx_frame(struct pn533 *dev, struct sk_buff *skb,
1854 int payload_len = skb->len;
1855 struct pn533_frame *out_frame;
1858 nfc_dev_dbg(&dev->interface->dev, "%s - Sending %d bytes", __func__,
1861 if (payload_len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
1862 /* TODO: Implement support to multi-part data exchange */
1863 nfc_dev_err(&dev->interface->dev, "Data length greater than the"
1865 PN533_CMD_DATAEXCH_DATA_MAXLEN);
1869 if (target == true) {
1870 switch (dev->device_type) {
1871 case PN533_DEVICE_PASORI:
1872 if (dev->tgt_active_prot == NFC_PROTO_FELICA) {
1873 skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN - 1);
1874 out_frame = (struct pn533_frame *) skb->data;
1875 pn533_tx_frame_init(out_frame,
1876 PN533_CMD_IN_COMM_THRU);
1882 skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN);
1883 out_frame = (struct pn533_frame *) skb->data;
1884 pn533_tx_frame_init(out_frame,
1885 PN533_CMD_IN_DATA_EXCHANGE);
1887 memcpy(PN533_FRAME_CMD_PARAMS_PTR(out_frame),
1889 out_frame->datalen += sizeof(u8);
1895 skb_push(skb, PN533_CMD_DATAEXCH_HEAD_LEN - 1);
1896 out_frame = (struct pn533_frame *) skb->data;
1897 pn533_tx_frame_init(out_frame, PN533_CMD_TG_SET_DATA);
1901 /* The data is already in the out_frame, just update the datalen */
1902 out_frame->datalen += payload_len;
1904 pn533_tx_frame_finish(out_frame);
1905 skb_put(skb, PN533_FRAME_TAIL_SIZE);
1910 struct pn533_data_exchange_arg {
1911 struct sk_buff *skb_resp;
1912 struct sk_buff *skb_out;
1913 data_exchange_cb_t cb;
1917 static struct sk_buff *pn533_build_response(struct pn533 *dev)
1919 struct sk_buff *skb, *tmp, *t;
1920 unsigned int skb_len = 0, tmp_len = 0;
1922 nfc_dev_dbg(&dev->interface->dev, "%s\n", __func__);
1924 if (skb_queue_empty(&dev->resp_q))
1927 if (skb_queue_len(&dev->resp_q) == 1) {
1928 skb = skb_dequeue(&dev->resp_q);
1932 skb_queue_walk_safe(&dev->resp_q, tmp, t)
1933 skb_len += tmp->len;
1935 nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n",
1938 skb = alloc_skb(skb_len, GFP_KERNEL);
1942 skb_put(skb, skb_len);
1944 skb_queue_walk_safe(&dev->resp_q, tmp, t) {
1945 memcpy(skb->data + tmp_len, tmp->data, tmp->len);
1946 tmp_len += tmp->len;
1950 skb_queue_purge(&dev->resp_q);
1955 static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
1956 u8 *params, int params_len)
1958 struct pn533_data_exchange_arg *arg = _arg;
1959 struct sk_buff *skb = NULL, *skb_resp = arg->skb_resp;
1960 struct pn533_frame *in_frame = (struct pn533_frame *) skb_resp->data;
1965 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
1967 dev_kfree_skb(arg->skb_out);
1969 if (params_len < 0) { /* error */
1976 cmd_ret = status & PN533_CMD_RET_MASK;
1977 if (cmd_ret != PN533_CMD_RET_SUCCESS) {
1978 nfc_dev_err(&dev->interface->dev, "PN533 reported error %d when"
1979 " exchanging data", cmd_ret);
1984 skb_put(skb_resp, PN533_FRAME_SIZE(in_frame));
1985 skb_pull(skb_resp, PN533_CMD_DATAEXCH_HEAD_LEN);
1986 skb_trim(skb_resp, skb_resp->len - PN533_FRAME_TAIL_SIZE);
1987 skb_queue_tail(&dev->resp_q, skb_resp);
1989 if (status & PN533_CMD_MI_MASK) {
1990 queue_work(dev->wq, &dev->mi_work);
1991 return -EINPROGRESS;
1994 skb = pn533_build_response(dev);
1998 arg->cb(arg->cb_context, skb, 0);
2003 skb_queue_purge(&dev->resp_q);
2004 dev_kfree_skb(skb_resp);
2005 arg->cb(arg->cb_context, NULL, err);
2010 static int pn533_transceive(struct nfc_dev *nfc_dev,
2011 struct nfc_target *target, struct sk_buff *skb,
2012 data_exchange_cb_t cb, void *cb_context)
2014 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2015 struct pn533_frame *out_frame, *in_frame;
2016 struct pn533_data_exchange_arg *arg;
2017 struct sk_buff *skb_resp;
2021 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2023 if (!dev->tgt_active_prot) {
2024 nfc_dev_err(&dev->interface->dev, "Cannot exchange data if"
2025 " there is no active target");
2030 rc = pn533_build_tx_frame(dev, skb, true);
2034 skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN +
2035 PN533_CMD_DATAEXCH_DATA_MAXLEN +
2036 PN533_FRAME_TAIL_SIZE;
2038 skb_resp = nfc_alloc_recv_skb(skb_resp_len, GFP_KERNEL);
2044 in_frame = (struct pn533_frame *) skb_resp->data;
2045 out_frame = (struct pn533_frame *) skb->data;
2047 arg = kmalloc(sizeof(struct pn533_data_exchange_arg), GFP_KERNEL);
2053 arg->skb_resp = skb_resp;
2056 arg->cb_context = cb_context;
2058 rc = pn533_send_cmd_frame_async(dev, out_frame, in_frame, skb_resp_len,
2059 pn533_data_exchange_complete, arg,
2062 nfc_dev_err(&dev->interface->dev, "Error %d when trying to"
2063 " perform data_exchange", rc);
2072 kfree_skb(skb_resp);
2078 static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
2079 u8 *params, int params_len)
2081 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2083 if (params_len < 0) {
2084 nfc_dev_err(&dev->interface->dev,
2085 "Error %d when sending data",
2091 if (params_len > 0 && params[0] != 0) {
2092 nfc_tm_deactivated(dev->nfc_dev);
2099 queue_work(dev->wq, &dev->tg_work);
2104 static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
2106 struct pn533 *dev = nfc_get_drvdata(nfc_dev);
2107 struct pn533_frame *out_frame;
2110 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2112 rc = pn533_build_tx_frame(dev, skb, false);
2116 out_frame = (struct pn533_frame *) skb->data;
2118 rc = pn533_send_cmd_frame_async(dev, out_frame, dev->in_frame,
2119 dev->in_maxlen, pn533_tm_send_complete,
2122 nfc_dev_err(&dev->interface->dev,
2123 "Error %d when trying to send data", rc);
2135 static void pn533_wq_mi_recv(struct work_struct *work)
2137 struct pn533 *dev = container_of(work, struct pn533, mi_work);
2138 struct sk_buff *skb_cmd;
2139 struct pn533_data_exchange_arg *arg = dev->cmd_complete_arg;
2140 struct pn533_frame *out_frame, *in_frame;
2141 struct sk_buff *skb_resp;
2145 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2147 /* This is a zero payload size skb */
2148 skb_cmd = alloc_skb(PN533_CMD_DATAEXCH_HEAD_LEN + PN533_FRAME_TAIL_SIZE,
2150 if (skb_cmd == NULL)
2153 skb_reserve(skb_cmd, PN533_CMD_DATAEXCH_HEAD_LEN);
2155 rc = pn533_build_tx_frame(dev, skb_cmd, true);
2159 skb_resp_len = PN533_CMD_DATAEXCH_HEAD_LEN +
2160 PN533_CMD_DATAEXCH_DATA_MAXLEN +
2161 PN533_FRAME_TAIL_SIZE;
2162 skb_resp = alloc_skb(skb_resp_len, GFP_KERNEL);
2168 in_frame = (struct pn533_frame *) skb_resp->data;
2169 out_frame = (struct pn533_frame *) skb_cmd->data;
2171 arg->skb_resp = skb_resp;
2172 arg->skb_out = skb_cmd;
2174 rc = __pn533_send_cmd_frame_async(dev, out_frame, in_frame,
2176 pn533_data_exchange_complete,
2177 dev->cmd_complete_arg, GFP_KERNEL);
2181 nfc_dev_err(&dev->interface->dev, "Error %d when trying to"
2182 " perform data_exchange", rc);
2184 kfree_skb(skb_resp);
2190 pn533_send_ack(dev, GFP_KERNEL);
2194 queue_work(dev->wq, &dev->cmd_work);
2197 static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
2203 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2205 pn533_tx_frame_init(dev->out_frame, PN533_CMD_RF_CONFIGURATION);
2207 params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame);
2208 params[0] = cfgitem;
2209 memcpy(¶ms[1], cfgdata, cfgdata_len);
2210 dev->out_frame->datalen += (1 + cfgdata_len);
2212 pn533_tx_frame_finish(dev->out_frame);
2214 rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
2220 static int pn533_fw_reset(struct pn533 *dev)
2225 nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
2227 pn533_tx_frame_init(dev->out_frame, 0x18);
2229 params = PN533_FRAME_CMD_PARAMS_PTR(dev->out_frame);
2231 dev->out_frame->datalen += 1;
2233 pn533_tx_frame_finish(dev->out_frame);
2235 rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
2241 static struct nfc_ops pn533_nfc_ops = {
2244 .dep_link_up = pn533_dep_link_up,
2245 .dep_link_down = pn533_dep_link_down,
2246 .start_poll = pn533_start_poll,
2247 .stop_poll = pn533_stop_poll,
2248 .activate_target = pn533_activate_target,
2249 .deactivate_target = pn533_deactivate_target,
2250 .im_transceive = pn533_transceive,
2251 .tm_send = pn533_tm_send,
2254 static int pn533_setup(struct pn533 *dev)
2256 struct pn533_config_max_retries max_retries;
2257 struct pn533_config_timing timing;
2258 u8 pasori_cfg[3] = {0x08, 0x01, 0x08};
2261 switch (dev->device_type) {
2262 case PN533_DEVICE_STD:
2263 max_retries.mx_rty_atr = PN533_CONFIG_MAX_RETRIES_ENDLESS;
2264 max_retries.mx_rty_psl = 2;
2265 max_retries.mx_rty_passive_act =
2266 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2268 timing.rfu = PN533_CONFIG_TIMING_102;
2269 timing.atr_res_timeout = PN533_CONFIG_TIMING_204;
2270 timing.dep_timeout = PN533_CONFIG_TIMING_409;
2274 case PN533_DEVICE_PASORI:
2275 max_retries.mx_rty_atr = 0x2;
2276 max_retries.mx_rty_psl = 0x1;
2277 max_retries.mx_rty_passive_act =
2278 PN533_CONFIG_MAX_RETRIES_NO_RETRY;
2280 timing.rfu = PN533_CONFIG_TIMING_102;
2281 timing.atr_res_timeout = PN533_CONFIG_TIMING_102;
2282 timing.dep_timeout = PN533_CONFIG_TIMING_204;
2287 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2292 rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES,
2293 (u8 *)&max_retries, sizeof(max_retries));
2295 nfc_dev_err(&dev->interface->dev,
2296 "Error on setting MAX_RETRIES config");
2301 rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING,
2302 (u8 *)&timing, sizeof(timing));
2304 nfc_dev_err(&dev->interface->dev,
2305 "Error on setting RF timings");
2309 switch (dev->device_type) {
2310 case PN533_DEVICE_STD:
2313 case PN533_DEVICE_PASORI:
2314 pn533_fw_reset(dev);
2316 rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
2319 nfc_dev_err(&dev->interface->dev,
2320 "Error while settings PASORI config");
2324 pn533_fw_reset(dev);
2332 static int pn533_probe(struct usb_interface *interface,
2333 const struct usb_device_id *id)
2335 struct pn533_fw_version *fw_ver;
2337 struct usb_host_interface *iface_desc;
2338 struct usb_endpoint_descriptor *endpoint;
2339 int in_endpoint = 0;
2340 int out_endpoint = 0;
2345 dev = kzalloc(sizeof(*dev), GFP_KERNEL);
2349 dev->udev = usb_get_dev(interface_to_usbdev(interface));
2350 dev->interface = interface;
2351 mutex_init(&dev->cmd_lock);
2353 iface_desc = interface->cur_altsetting;
2354 for (i = 0; i < iface_desc->desc.bNumEndpoints; ++i) {
2355 endpoint = &iface_desc->endpoint[i].desc;
2357 if (!in_endpoint && usb_endpoint_is_bulk_in(endpoint)) {
2358 dev->in_maxlen = le16_to_cpu(endpoint->wMaxPacketSize);
2359 in_endpoint = endpoint->bEndpointAddress;
2362 if (!out_endpoint && usb_endpoint_is_bulk_out(endpoint)) {
2364 le16_to_cpu(endpoint->wMaxPacketSize);
2365 out_endpoint = endpoint->bEndpointAddress;
2369 if (!in_endpoint || !out_endpoint) {
2370 nfc_dev_err(&interface->dev, "Could not find bulk-in or"
2371 " bulk-out endpoint");
2376 dev->in_frame = kmalloc(dev->in_maxlen, GFP_KERNEL);
2377 dev->in_urb = usb_alloc_urb(0, GFP_KERNEL);
2378 dev->out_frame = kmalloc(dev->out_maxlen, GFP_KERNEL);
2379 dev->out_urb = usb_alloc_urb(0, GFP_KERNEL);
2381 if (!dev->in_frame || !dev->out_frame ||
2382 !dev->in_urb || !dev->out_urb)
2385 usb_fill_bulk_urb(dev->in_urb, dev->udev,
2386 usb_rcvbulkpipe(dev->udev, in_endpoint),
2387 NULL, 0, NULL, dev);
2388 usb_fill_bulk_urb(dev->out_urb, dev->udev,
2389 usb_sndbulkpipe(dev->udev, out_endpoint),
2391 pn533_send_complete, dev);
2393 INIT_WORK(&dev->cmd_work, pn533_wq_cmd);
2394 INIT_WORK(&dev->cmd_complete_work, pn533_wq_cmd_complete);
2395 INIT_WORK(&dev->mi_work, pn533_wq_mi_recv);
2396 INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data);
2397 INIT_WORK(&dev->poll_work, pn533_wq_poll);
2398 dev->wq = alloc_ordered_workqueue("pn533", 0);
2399 if (dev->wq == NULL)
2402 init_timer(&dev->listen_timer);
2403 dev->listen_timer.data = (unsigned long) dev;
2404 dev->listen_timer.function = pn533_listen_mode_timer;
2406 skb_queue_head_init(&dev->resp_q);
2408 INIT_LIST_HEAD(&dev->cmd_queue);
2410 usb_set_intfdata(interface, dev);
2412 pn533_tx_frame_init(dev->out_frame, PN533_CMD_GET_FIRMWARE_VERSION);
2413 pn533_tx_frame_finish(dev->out_frame);
2415 rc = pn533_send_cmd_frame_sync(dev, dev->out_frame, dev->in_frame,
2420 fw_ver = (struct pn533_fw_version *)
2421 PN533_FRAME_CMD_PARAMS_PTR(dev->in_frame);
2422 nfc_dev_info(&dev->interface->dev, "NXP PN533 firmware ver %d.%d now"
2423 " attached", fw_ver->ver, fw_ver->rev);
2425 dev->device_type = id->driver_info;
2426 switch (dev->device_type) {
2427 case PN533_DEVICE_STD:
2428 protocols = PN533_ALL_PROTOCOLS;
2431 case PN533_DEVICE_PASORI:
2432 protocols = PN533_NO_TYPE_B_PROTOCOLS;
2436 nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
2442 dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
2443 PN533_CMD_DATAEXCH_HEAD_LEN,
2444 PN533_FRAME_TAIL_SIZE);
2448 nfc_set_parent_dev(dev->nfc_dev, &interface->dev);
2449 nfc_set_drvdata(dev->nfc_dev, dev);
2451 rc = nfc_register_device(dev->nfc_dev);
2455 rc = pn533_setup(dev);
2457 goto unregister_nfc_dev;
2462 nfc_unregister_device(dev->nfc_dev);
2465 nfc_free_device(dev->nfc_dev);
2468 destroy_workqueue(dev->wq);
2470 kfree(dev->in_frame);
2471 usb_free_urb(dev->in_urb);
2472 kfree(dev->out_frame);
2473 usb_free_urb(dev->out_urb);
2478 static void pn533_disconnect(struct usb_interface *interface)
2481 struct pn533_cmd *cmd, *n;
2483 dev = usb_get_intfdata(interface);
2484 usb_set_intfdata(interface, NULL);
2486 nfc_unregister_device(dev->nfc_dev);
2487 nfc_free_device(dev->nfc_dev);
2489 usb_kill_urb(dev->in_urb);
2490 usb_kill_urb(dev->out_urb);
2492 destroy_workqueue(dev->wq);
2494 skb_queue_purge(&dev->resp_q);
2496 del_timer(&dev->listen_timer);
2498 list_for_each_entry_safe(cmd, n, &dev->cmd_queue, queue) {
2499 list_del(&cmd->queue);
2503 kfree(dev->in_frame);
2504 usb_free_urb(dev->in_urb);
2505 kfree(dev->out_frame);
2506 usb_free_urb(dev->out_urb);
2509 nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected");
2512 static struct usb_driver pn533_driver = {
2514 .probe = pn533_probe,
2515 .disconnect = pn533_disconnect,
2516 .id_table = pn533_table,
2519 module_usb_driver(pn533_driver);
2521 MODULE_AUTHOR("Lauro Ramos Venancio <lauro.venancio@openbossa.org>,"
2522 " Aloisio Almeida Jr <aloisio.almeida@openbossa.org>");
2523 MODULE_DESCRIPTION("PN533 usb driver ver " VERSION);
2524 MODULE_VERSION(VERSION);
2525 MODULE_LICENSE("GPL");