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path: root/drivers/nfc/pn533.c
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Diffstat (limited to 'drivers/nfc/pn533.c')
-rw-r--r--drivers/nfc/pn533.c604
1 files changed, 418 insertions, 186 deletions
diff --git a/drivers/nfc/pn533.c b/drivers/nfc/pn533.c
index 5df730be88a3..2daf04c07338 100644
--- a/drivers/nfc/pn533.c
+++ b/drivers/nfc/pn533.c
@@ -150,6 +150,7 @@ MODULE_DEVICE_TABLE(usb, pn533_table);
#define PN533_CMD_TG_INIT_AS_TARGET 0x8c
#define PN533_CMD_TG_GET_DATA 0x86
#define PN533_CMD_TG_SET_DATA 0x8e
+#define PN533_CMD_TG_SET_META_DATA 0x94
#define PN533_CMD_UNDEF 0xff
#define PN533_CMD_RESPONSE(cmd) (cmd + 1)
@@ -373,6 +374,8 @@ struct pn533 {
struct delayed_work poll_work;
struct work_struct mi_rx_work;
struct work_struct mi_tx_work;
+ struct work_struct mi_tm_rx_work;
+ struct work_struct mi_tm_tx_work;
struct work_struct tg_work;
struct work_struct rf_work;
@@ -387,6 +390,7 @@ struct pn533 {
struct pn533_poll_modulations *poll_mod_active[PN533_POLL_MOD_MAX + 1];
u8 poll_mod_count;
u8 poll_mod_curr;
+ u8 poll_dep;
u32 poll_protocols;
u32 listen_protocols;
struct timer_list listen_timer;
@@ -722,32 +726,32 @@ static void pn533_recv_response(struct urb *urb)
break; /* success */
case -ECONNRESET:
case -ENOENT:
- nfc_dev_dbg(&dev->interface->dev,
- "The urb has been canceled (status %d)",
- urb->status);
+ dev_dbg(&dev->interface->dev,
+ "The urb has been canceled (status %d)\n",
+ urb->status);
goto sched_wq;
case -ESHUTDOWN:
default:
- nfc_dev_err(&dev->interface->dev,
- "Urb failure (status %d)", urb->status);
+ nfc_err(&dev->interface->dev,
+ "Urb failure (status %d)\n", urb->status);
goto sched_wq;
}
in_frame = dev->in_urb->transfer_buffer;
- nfc_dev_dbg(&dev->interface->dev, "Received a frame.");
+ dev_dbg(&dev->interface->dev, "Received a frame\n");
print_hex_dump_debug("PN533 RX: ", DUMP_PREFIX_NONE, 16, 1, in_frame,
dev->ops->rx_frame_size(in_frame), false);
if (!dev->ops->rx_is_frame_valid(in_frame, dev)) {
- nfc_dev_err(&dev->interface->dev, "Received an invalid frame");
+ nfc_err(&dev->interface->dev, "Received an invalid frame\n");
cmd->status = -EIO;
goto sched_wq;
}
if (!pn533_rx_frame_is_cmd_response(dev, in_frame)) {
- nfc_dev_err(&dev->interface->dev,
- "It it not the response to the last command");
+ nfc_err(&dev->interface->dev,
+ "It it not the response to the last command\n");
cmd->status = -EIO;
goto sched_wq;
}
@@ -777,29 +781,29 @@ static void pn533_recv_ack(struct urb *urb)
break; /* success */
case -ECONNRESET:
case -ENOENT:
- nfc_dev_dbg(&dev->interface->dev,
- "The urb has been stopped (status %d)",
- urb->status);
+ dev_dbg(&dev->interface->dev,
+ "The urb has been stopped (status %d)\n",
+ urb->status);
goto sched_wq;
case -ESHUTDOWN:
default:
- nfc_dev_err(&dev->interface->dev,
- "Urb failure (status %d)", urb->status);
+ nfc_err(&dev->interface->dev,
+ "Urb failure (status %d)\n", urb->status);
goto sched_wq;
}
in_frame = dev->in_urb->transfer_buffer;
if (!pn533_std_rx_frame_is_ack(in_frame)) {
- nfc_dev_err(&dev->interface->dev, "Received an invalid ack");
+ nfc_err(&dev->interface->dev, "Received an invalid ack\n");
cmd->status = -EIO;
goto sched_wq;
}
rc = pn533_submit_urb_for_response(dev, GFP_ATOMIC);
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "usb_submit_urb failed with result %d", rc);
+ nfc_err(&dev->interface->dev,
+ "usb_submit_urb failed with result %d\n", rc);
cmd->status = rc;
goto sched_wq;
}
@@ -823,8 +827,6 @@ static int pn533_send_ack(struct pn533 *dev, gfp_t flags)
/* spec 7.1.1.3: Preamble, SoPC (2), ACK Code (2), Postamble */
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
-
dev->out_urb->transfer_buffer = ack;
dev->out_urb->transfer_buffer_length = sizeof(ack);
rc = usb_submit_urb(dev->out_urb, flags);
@@ -927,7 +929,7 @@ static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
struct pn533_cmd *cmd;
int rc = 0;
- nfc_dev_dbg(&dev->interface->dev, "Sending command 0x%x", cmd_code);
+ dev_dbg(&dev->interface->dev, "Sending command 0x%x\n", cmd_code);
cmd = kzalloc(sizeof(*cmd), GFP_KERNEL);
if (!cmd)
@@ -954,8 +956,8 @@ static int __pn533_send_async(struct pn533 *dev, u8 cmd_code,
goto unlock;
}
- nfc_dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x", __func__,
- cmd_code);
+ dev_dbg(&dev->interface->dev, "%s Queueing command 0x%x\n",
+ __func__, cmd_code);
INIT_LIST_HEAD(&cmd->queue);
list_add_tail(&cmd->queue, &dev->cmd_queue);
@@ -1168,14 +1170,14 @@ static void pn533_send_complete(struct urb *urb)
break; /* success */
case -ECONNRESET:
case -ENOENT:
- nfc_dev_dbg(&dev->interface->dev,
- "The urb has been stopped (status %d)",
- urb->status);
+ dev_dbg(&dev->interface->dev,
+ "The urb has been stopped (status %d)\n",
+ urb->status);
break;
case -ESHUTDOWN:
default:
- nfc_dev_err(&dev->interface->dev,
- "Urb failure (status %d)", urb->status);
+ nfc_err(&dev->interface->dev, "Urb failure (status %d)\n",
+ urb->status);
}
}
@@ -1452,8 +1454,8 @@ static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
struct nfc_target nfc_tgt;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s - modulation=%d", __func__,
- dev->poll_mod_curr);
+ dev_dbg(&dev->interface->dev, "%s: modulation=%d\n",
+ __func__, dev->poll_mod_curr);
if (tg != 1)
return -EPROTO;
@@ -1475,8 +1477,8 @@ static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
rc = pn533_target_found_type_b(&nfc_tgt, tgdata, tgdata_len);
break;
default:
- nfc_dev_err(&dev->interface->dev,
- "Unknown current poll modulation");
+ nfc_err(&dev->interface->dev,
+ "Unknown current poll modulation\n");
return -EPROTO;
}
@@ -1484,14 +1486,14 @@ static int pn533_target_found(struct pn533 *dev, u8 tg, u8 *tgdata,
return rc;
if (!(nfc_tgt.supported_protocols & dev->poll_protocols)) {
- nfc_dev_dbg(&dev->interface->dev,
- "The Tg found doesn't have the desired protocol");
+ dev_dbg(&dev->interface->dev,
+ "The Tg found doesn't have the desired protocol\n");
return -EAGAIN;
}
- nfc_dev_dbg(&dev->interface->dev,
- "Target found - supported protocols: 0x%x",
- nfc_tgt.supported_protocols);
+ dev_dbg(&dev->interface->dev,
+ "Target found - supported protocols: 0x%x\n",
+ nfc_tgt.supported_protocols);
dev->tgt_available_prots = nfc_tgt.supported_protocols;
@@ -1548,7 +1550,8 @@ static int pn533_start_poll_complete(struct pn533 *dev, struct sk_buff *resp)
u8 nbtg, tg, *tgdata;
int rc, tgdata_len;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ /* Toggle the DEP polling */
+ dev->poll_dep = 1;
nbtg = resp->data[0];
tg = resp->data[1];
@@ -1624,37 +1627,130 @@ static struct sk_buff *pn533_alloc_poll_tg_frame(struct pn533 *dev)
#define PN533_CMD_DATAEXCH_HEAD_LEN 1
#define PN533_CMD_DATAEXCH_DATA_MAXLEN 262
+static void pn533_wq_tm_mi_recv(struct work_struct *work);
+static struct sk_buff *pn533_build_response(struct pn533 *dev);
+
static int pn533_tm_get_data_complete(struct pn533 *dev, void *arg,
struct sk_buff *resp)
{
- u8 status;
+ struct sk_buff *skb;
+ u8 status, ret, mi;
+ int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
- if (IS_ERR(resp))
+ if (IS_ERR(resp)) {
+ skb_queue_purge(&dev->resp_q);
return PTR_ERR(resp);
+ }
status = resp->data[0];
+
+ ret = status & PN533_CMD_RET_MASK;
+ mi = status & PN533_CMD_MI_MASK;
+
skb_pull(resp, sizeof(status));
- if (status != 0) {
- nfc_tm_deactivated(dev->nfc_dev);
- dev->tgt_mode = 0;
- dev_kfree_skb(resp);
- return 0;
+ if (ret != PN533_CMD_RET_SUCCESS) {
+ rc = -EIO;
+ goto error;
}
- return nfc_tm_data_received(dev->nfc_dev, resp);
+ skb_queue_tail(&dev->resp_q, resp);
+
+ if (mi) {
+ queue_work(dev->wq, &dev->mi_tm_rx_work);
+ return -EINPROGRESS;
+ }
+
+ skb = pn533_build_response(dev);
+ if (!skb) {
+ rc = -EIO;
+ goto error;
+ }
+
+ return nfc_tm_data_received(dev->nfc_dev, skb);
+
+error:
+ nfc_tm_deactivated(dev->nfc_dev);
+ dev->tgt_mode = 0;
+ skb_queue_purge(&dev->resp_q);
+ dev_kfree_skb(resp);
+
+ return rc;
+}
+
+static void pn533_wq_tm_mi_recv(struct work_struct *work)
+{
+ struct pn533 *dev = container_of(work, struct pn533, mi_tm_rx_work);
+ struct sk_buff *skb;
+ int rc;
+
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
+
+ skb = pn533_alloc_skb(dev, 0);
+ if (!skb)
+ return;
+
+ rc = pn533_send_cmd_direct_async(dev,
+ PN533_CMD_TG_GET_DATA,
+ skb,
+ pn533_tm_get_data_complete,
+ NULL);
+
+ if (rc < 0)
+ dev_kfree_skb(skb);
+
+ return;
+}
+
+static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
+ struct sk_buff *resp);
+static void pn533_wq_tm_mi_send(struct work_struct *work)
+{
+ struct pn533 *dev = container_of(work, struct pn533, mi_tm_tx_work);
+ struct sk_buff *skb;
+ int rc;
+
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
+
+ /* Grab the first skb in the queue */
+ skb = skb_dequeue(&dev->fragment_skb);
+ if (skb == NULL) { /* No more data */
+ /* Reset the queue for future use */
+ skb_queue_head_init(&dev->fragment_skb);
+ goto error;
+ }
+
+ /* last entry - remove MI bit */
+ if (skb_queue_len(&dev->fragment_skb) == 0) {
+ rc = pn533_send_cmd_direct_async(dev, PN533_CMD_TG_SET_DATA,
+ skb, pn533_tm_send_complete, NULL);
+ } else
+ rc = pn533_send_cmd_direct_async(dev,
+ PN533_CMD_TG_SET_META_DATA,
+ skb, pn533_tm_send_complete, NULL);
+
+ if (rc == 0) /* success */
+ return;
+
+ dev_err(&dev->interface->dev,
+ "Error %d when trying to perform set meta data_exchange", rc);
+
+ dev_kfree_skb(skb);
+
+error:
+ pn533_send_ack(dev, GFP_KERNEL);
+ queue_work(dev->wq, &dev->cmd_work);
}
static void pn533_wq_tg_get_data(struct work_struct *work)
{
struct pn533 *dev = container_of(work, struct pn533, tg_work);
-
struct sk_buff *skb;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
skb = pn533_alloc_skb(dev, 0);
if (!skb)
@@ -1676,7 +1772,7 @@ static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
size_t gb_len;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (resp->len < ATR_REQ_GB_OFFSET + 1)
return -EINVAL;
@@ -1684,8 +1780,8 @@ static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
mode = resp->data[0];
cmd = &resp->data[1];
- nfc_dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n",
- mode, resp->len);
+ dev_dbg(&dev->interface->dev, "Target mode 0x%x len %d\n",
+ mode, resp->len);
if ((mode & PN533_INIT_TARGET_RESP_FRAME_MASK) ==
PN533_INIT_TARGET_RESP_ACTIVE)
@@ -1700,8 +1796,8 @@ static int pn533_init_target_complete(struct pn533 *dev, struct sk_buff *resp)
rc = nfc_tm_activated(dev->nfc_dev, NFC_PROTO_NFC_DEP_MASK,
comm_mode, gb, gb_len);
if (rc < 0) {
- nfc_dev_err(&dev->interface->dev,
- "Error when signaling target activation");
+ nfc_err(&dev->interface->dev,
+ "Error when signaling target activation\n");
return rc;
}
@@ -1715,7 +1811,7 @@ static void pn533_listen_mode_timer(unsigned long data)
{
struct pn533 *dev = (struct pn533 *)data;
- nfc_dev_dbg(&dev->interface->dev, "Listen mode timeout");
+ dev_dbg(&dev->interface->dev, "Listen mode timeout\n");
dev->cancel_listen = 1;
@@ -1730,13 +1826,12 @@ static int pn533_rf_complete(struct pn533 *dev, void *arg,
{
int rc = 0;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (IS_ERR(resp)) {
rc = PTR_ERR(resp);
- nfc_dev_err(&dev->interface->dev, "%s RF setting error %d",
- __func__, rc);
+ nfc_err(&dev->interface->dev, "RF setting error %d", rc);
return rc;
}
@@ -1754,7 +1849,7 @@ static void pn533_wq_rf(struct work_struct *work)
struct sk_buff *skb;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
skb = pn533_alloc_skb(dev, 2);
if (!skb)
@@ -1767,25 +1862,136 @@ static void pn533_wq_rf(struct work_struct *work)
pn533_rf_complete, NULL);
if (rc < 0) {
dev_kfree_skb(skb);
- nfc_dev_err(&dev->interface->dev, "RF setting error %d", rc);
+ nfc_err(&dev->interface->dev, "RF setting error %d\n", rc);
}
return;
}
+static int pn533_poll_dep_complete(struct pn533 *dev, void *arg,
+ struct sk_buff *resp)
+{
+ struct pn533_cmd_jump_dep_response *rsp;
+ struct nfc_target nfc_target;
+ u8 target_gt_len;
+ int rc;
+
+ if (IS_ERR(resp))
+ return PTR_ERR(resp);
+
+ rsp = (struct pn533_cmd_jump_dep_response *)resp->data;
+
+ rc = rsp->status & PN533_CMD_RET_MASK;
+ if (rc != PN533_CMD_RET_SUCCESS) {
+ /* Not target found, turn radio off */
+ queue_work(dev->wq, &dev->rf_work);
+
+ dev_kfree_skb(resp);
+ return 0;
+ }
+
+ dev_dbg(&dev->interface->dev, "Creating new target");
+
+ nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
+ nfc_target.nfcid1_len = 10;
+ memcpy(nfc_target.nfcid1, rsp->nfcid3t, nfc_target.nfcid1_len);
+ rc = nfc_targets_found(dev->nfc_dev, &nfc_target, 1);
+ if (rc)
+ goto error;
+
+ dev->tgt_available_prots = 0;
+ dev->tgt_active_prot = NFC_PROTO_NFC_DEP;
+
+ /* ATR_RES general bytes are located at offset 17 */
+ target_gt_len = resp->len - 17;
+ rc = nfc_set_remote_general_bytes(dev->nfc_dev,
+ rsp->gt, target_gt_len);
+ if (!rc) {
+ rc = nfc_dep_link_is_up(dev->nfc_dev,
+ dev->nfc_dev->targets[0].idx,
+ 0, NFC_RF_INITIATOR);
+
+ if (!rc)
+ pn533_poll_reset_mod_list(dev);
+ }
+error:
+ dev_kfree_skb(resp);
+ return rc;
+}
+
+#define PASSIVE_DATA_LEN 5
+static int pn533_poll_dep(struct nfc_dev *nfc_dev)
+{
+ struct pn533 *dev = nfc_get_drvdata(nfc_dev);
+ struct sk_buff *skb;
+ int rc, skb_len;
+ u8 *next, nfcid3[NFC_NFCID3_MAXSIZE];
+ u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
+
+ dev_dbg(&dev->interface->dev, "%s", __func__);
+
+ if (!dev->gb) {
+ dev->gb = nfc_get_local_general_bytes(nfc_dev, &dev->gb_len);
+
+ if (!dev->gb || !dev->gb_len) {
+ dev->poll_dep = 0;
+ queue_work(dev->wq, &dev->rf_work);
+ }
+ }
+
+ skb_len = 3 + dev->gb_len; /* ActPass + BR + Next */
+ skb_len += PASSIVE_DATA_LEN;
+
+ /* NFCID3 */
+ skb_len += NFC_NFCID3_MAXSIZE;
+ nfcid3[0] = 0x1;
+ nfcid3[1] = 0xfe;
+ get_random_bytes(nfcid3 + 2, 6);
+
+ skb = pn533_alloc_skb(dev, skb_len);
+ if (!skb)
+ return -ENOMEM;
+
+ *skb_put(skb, 1) = 0x01; /* Active */
+ *skb_put(skb, 1) = 0x02; /* 424 kbps */
+
+ next = skb_put(skb, 1); /* Next */
+ *next = 0;
+
+ /* Copy passive data */
+ memcpy(skb_put(skb, PASSIVE_DATA_LEN), passive_data, PASSIVE_DATA_LEN);
+ *next |= 1;
+
+ /* Copy NFCID3 (which is NFCID2 from SENSF_RES) */
+ memcpy(skb_put(skb, NFC_NFCID3_MAXSIZE), nfcid3,
+ NFC_NFCID3_MAXSIZE);
+ *next |= 2;
+
+ memcpy(skb_put(skb, dev->gb_len), dev->gb, dev->gb_len);
+ *next |= 4; /* We have some Gi */
+
+ rc = pn533_send_cmd_async(dev, PN533_CMD_IN_JUMP_FOR_DEP, skb,
+ pn533_poll_dep_complete, NULL);
+
+ if (rc < 0)
+ dev_kfree_skb(skb);
+
+ return rc;
+}
+
static int pn533_poll_complete(struct pn533 *dev, void *arg,
struct sk_buff *resp)
{
struct pn533_poll_modulations *cur_mod;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (IS_ERR(resp)) {
rc = PTR_ERR(resp);
- nfc_dev_err(&dev->interface->dev, "%s Poll complete error %d",
- __func__, rc);
+ nfc_err(&dev->interface->dev, "%s Poll complete error %d\n",
+ __func__, rc);
if (rc == -ENOENT) {
if (dev->poll_mod_count != 0)
@@ -1793,8 +1999,8 @@ static int pn533_poll_complete(struct pn533 *dev, void *arg,
else
goto stop_poll;
} else if (rc < 0) {
- nfc_dev_err(&dev->interface->dev,
- "Error %d when running poll", rc);
+ nfc_err(&dev->interface->dev,
+ "Error %d when running poll\n", rc);
goto stop_poll;
}
}
@@ -1813,7 +2019,7 @@ static int pn533_poll_complete(struct pn533 *dev, void *arg,
goto done;
if (!dev->poll_mod_count) {
- nfc_dev_dbg(&dev->interface->dev, "Polling has been stopped.");
+ dev_dbg(&dev->interface->dev, "Polling has been stopped\n");
goto done;
}
@@ -1826,7 +2032,7 @@ done:
return rc;
stop_poll:
- nfc_dev_err(&dev->interface->dev, "Polling operation has been stopped");
+ nfc_err(&dev->interface->dev, "Polling operation has been stopped\n");
pn533_poll_reset_mod_list(dev);
dev->poll_protocols = 0;
@@ -1856,8 +2062,13 @@ static int pn533_send_poll_frame(struct pn533 *dev)
mod = dev->poll_mod_active[dev->poll_mod_curr];
- nfc_dev_dbg(&dev->interface->dev, "%s mod len %d\n",
- __func__, mod->len);
+ dev_dbg(&dev->interface->dev, "%s mod len %d\n",
+ __func__, mod->len);
+
+ if (dev->poll_dep) {
+ dev->poll_dep = 0;
+ return pn533_poll_dep(dev->nfc_dev);
+ }
if (mod->len == 0) { /* Listen mode */
cmd_code = PN533_CMD_TG_INIT_AS_TARGET;
@@ -1868,7 +2079,7 @@ static int pn533_send_poll_frame(struct pn533 *dev)
}
if (!skb) {
- nfc_dev_err(&dev->interface->dev, "Failed to allocate skb.");
+ nfc_err(&dev->interface->dev, "Failed to allocate skb\n");
return -ENOMEM;
}
@@ -1876,7 +2087,7 @@ static int pn533_send_poll_frame(struct pn533 *dev)
NULL);
if (rc < 0) {
dev_kfree_skb(skb);
- nfc_dev_err(&dev->interface->dev, "Polling loop error %d", rc);
+ nfc_err(&dev->interface->dev, "Polling loop error %d\n", rc);
}
return rc;
@@ -1890,9 +2101,9 @@ static void pn533_wq_poll(struct work_struct *work)
cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
- nfc_dev_dbg(&dev->interface->dev,
- "%s cancel_listen %d modulation len %d",
- __func__, dev->cancel_listen, cur_mod->len);
+ dev_dbg(&dev->interface->dev,
+ "%s cancel_listen %d modulation len %d\n",
+ __func__, dev->cancel_listen, cur_mod->len);
if (dev->cancel_listen == 1) {
dev->cancel_listen = 0;
@@ -1913,21 +2124,23 @@ static int pn533_start_poll(struct nfc_dev *nfc_dev,
u32 im_protocols, u32 tm_protocols)
{
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
+ struct pn533_poll_modulations *cur_mod;
u8 rand_mod;
+ int rc;
- nfc_dev_dbg(&dev->interface->dev,
- "%s: im protocols 0x%x tm protocols 0x%x",
- __func__, im_protocols, tm_protocols);
+ dev_dbg(&dev->interface->dev,
+ "%s: im protocols 0x%x tm protocols 0x%x\n",
+ __func__, im_protocols, tm_protocols);
if (dev->tgt_active_prot) {
- nfc_dev_err(&dev->interface->dev,
- "Cannot poll with a target already activated");
+ nfc_err(&dev->interface->dev,
+ "Cannot poll with a target already activated\n");
return -EBUSY;
}
if (dev->tgt_mode) {
- nfc_dev_err(&dev->interface->dev,
- "Cannot poll while already being activated");
+ nfc_err(&dev->interface->dev,
+ "Cannot poll while already being activated\n");
return -EBUSY;
}
@@ -1946,20 +2159,26 @@ static int pn533_start_poll(struct nfc_dev *nfc_dev,
rand_mod %= dev->poll_mod_count;
dev->poll_mod_curr = rand_mod;
- return pn533_send_poll_frame(dev);
+ cur_mod = dev->poll_mod_active[dev->poll_mod_curr];
+
+ rc = pn533_send_poll_frame(dev);
+
+ /* Start listen timer */
+ if (!rc && cur_mod->len == 0 && dev->poll_mod_count > 1)
+ mod_timer(&dev->listen_timer, jiffies + PN533_LISTEN_TIME * HZ);
+
+ return rc;
}
static void pn533_stop_poll(struct nfc_dev *nfc_dev)
{
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
-
del_timer(&dev->listen_timer);
if (!dev->poll_mod_count) {
- nfc_dev_dbg(&dev->interface->dev,
- "Polling operation was not running");
+ dev_dbg(&dev->interface->dev,
+ "Polling operation was not running\n");
return;
}
@@ -1973,11 +2192,10 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev)
struct pn533_cmd_activate_response *rsp;
u16 gt_len;
int rc;
-
struct sk_buff *skb;
struct sk_buff *resp;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
skb = pn533_alloc_skb(dev, sizeof(u8) * 2); /*TG + Next*/
if (!skb)
@@ -1993,8 +2211,8 @@ static int pn533_activate_target_nfcdep(struct pn533 *dev)
rsp = (struct pn533_cmd_activate_response *)resp->data;
rc = rsp->status & PN533_CMD_RET_MASK;
if (rc != PN533_CMD_RET_SUCCESS) {
- nfc_dev_err(&dev->interface->dev,
- "Target activation failed (error 0x%x)", rc);
+ nfc_err(&dev->interface->dev,
+ "Target activation failed (error 0x%x)\n", rc);
dev_kfree_skb(resp);
return -EIO;
}
@@ -2013,39 +2231,38 @@ static int pn533_activate_target(struct nfc_dev *nfc_dev,
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s - protocol=%u", __func__,
- protocol);
+ dev_dbg(&dev->interface->dev, "%s: protocol=%u\n", __func__, protocol);
if (dev->poll_mod_count) {
- nfc_dev_err(&dev->interface->dev,
- "Cannot activate while polling");
+ nfc_err(&dev->interface->dev,
+ "Cannot activate while polling\n");
return -EBUSY;
}
if (dev->tgt_active_prot) {
- nfc_dev_err(&dev->interface->dev,
- "There is already an active target");
+ nfc_err(&dev->interface->dev,
+ "There is already an active target\n");
return -EBUSY;
}
if (!dev->tgt_available_prots) {
- nfc_dev_err(&dev->interface->dev,
- "There is no available target to activate");
+ nfc_err(&dev->interface->dev,
+ "There is no available target to activate\n");
return -EINVAL;
}
if (!(dev->tgt_available_prots & (1 << protocol))) {
- nfc_dev_err(&dev->interface->dev,
- "Target doesn't support requested proto %u",
- protocol);
+ nfc_err(&dev->interface->dev,
+ "Target doesn't support requested proto %u\n",
+ protocol);
return -EINVAL;
}
if (protocol == NFC_PROTO_NFC_DEP) {
rc = pn533_activate_target_nfcdep(dev);
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "Activating target with DEP failed %d", rc);
+ nfc_err(&dev->interface->dev,
+ "Activating target with DEP failed %d\n", rc);
return rc;
}
}
@@ -2060,16 +2277,14 @@ static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
struct nfc_target *target)
{
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
-
struct sk_buff *skb;
struct sk_buff *resp;
-
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (!dev->tgt_active_prot) {
- nfc_dev_err(&dev->interface->dev, "There is no active target");
+ nfc_err(&dev->interface->dev, "There is no active target\n");
return;
}
@@ -2088,8 +2303,8 @@ static void pn533_deactivate_target(struct nfc_dev *nfc_dev,
rc = resp->data[0] & PN533_CMD_RET_MASK;
if (rc != PN533_CMD_RET_SUCCESS)
- nfc_dev_err(&dev->interface->dev,
- "Error 0x%x when releasing the target", rc);
+ nfc_err(&dev->interface->dev,
+ "Error 0x%x when releasing the target\n", rc);
dev_kfree_skb(resp);
return;
@@ -2111,8 +2326,8 @@ static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
if (dev->tgt_available_prots &&
!(dev->tgt_available_prots & (1 << NFC_PROTO_NFC_DEP))) {
- nfc_dev_err(&dev->interface->dev,
- "The target does not support DEP");
+ nfc_err(&dev->interface->dev,
+ "The target does not support DEP\n");
rc = -EINVAL;
goto error;
}
@@ -2121,15 +2336,15 @@ static int pn533_in_dep_link_up_complete(struct pn533 *dev, void *arg,
rc = rsp->status & PN533_CMD_RET_MASK;
if (rc != PN533_CMD_RET_SUCCESS) {
- nfc_dev_err(&dev->interface->dev,
- "Bringing DEP link up failed (error 0x%x)", rc);
+ nfc_err(&dev->interface->dev,
+ "Bringing DEP link up failed (error 0x%x)\n", rc);
goto error;
}
if (!dev->tgt_available_prots) {
struct nfc_target nfc_target;
- nfc_dev_dbg(&dev->interface->dev, "Creating new target");
+ dev_dbg(&dev->interface->dev, "Creating new target\n");
nfc_target.supported_protocols = NFC_PROTO_NFC_DEP_MASK;
nfc_target.nfcid1_len = 10;
@@ -2158,7 +2373,6 @@ error:
}
static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf);
-#define PASSIVE_DATA_LEN 5
static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
u8 comm_mode, u8 *gb, size_t gb_len)
{
@@ -2166,20 +2380,19 @@ static int pn533_dep_link_up(struct nfc_dev *nfc_dev, struct nfc_target *target,
struct sk_buff *skb;
int rc, skb_len;
u8 *next, *arg, nfcid3[NFC_NFCID3_MAXSIZE];
-
u8 passive_data[PASSIVE_DATA_LEN] = {0x00, 0xff, 0xff, 0x00, 0x3};
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (dev->poll_mod_count) {
- nfc_dev_err(&dev->interface->dev,
- "Cannot bring the DEP link up while polling");
+ nfc_err(&dev->interface->dev,
+ "Cannot bring the DEP link up while polling\n");
return -EBUSY;
}
if (dev->tgt_active_prot) {
- nfc_dev_err(&dev->interface->dev,
- "There is already an active target");
+ nfc_err(&dev->interface->dev,
+ "There is already an active target\n");
return -EBUSY;
}
@@ -2249,7 +2462,7 @@ static int pn533_dep_link_down(struct nfc_dev *nfc_dev)
{
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
pn533_poll_reset_mod_list(dev);
@@ -2274,7 +2487,7 @@ static struct sk_buff *pn533_build_response(struct pn533 *dev)
struct sk_buff *skb, *tmp, *t;
unsigned int skb_len = 0, tmp_len = 0;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (skb_queue_empty(&dev->resp_q))
return NULL;
@@ -2287,8 +2500,8 @@ static struct sk_buff *pn533_build_response(struct pn533 *dev)
skb_queue_walk_safe(&dev->resp_q, tmp, t)
skb_len += tmp->len;
- nfc_dev_dbg(&dev->interface->dev, "%s total length %d\n",
- __func__, skb_len);
+ dev_dbg(&dev->interface->dev, "%s total length %d\n",
+ __func__, skb_len);
skb = alloc_skb(skb_len, GFP_KERNEL);
if (skb == NULL)
@@ -2315,7 +2528,7 @@ static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
int rc = 0;
u8 status, ret, mi;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (IS_ERR(resp)) {
rc = PTR_ERR(resp);
@@ -2329,8 +2542,8 @@ static int pn533_data_exchange_complete(struct pn533 *dev, void *_arg,
skb_pull(resp, sizeof(status));
if (ret != PN533_CMD_RET_SUCCESS) {
- nfc_dev_err(&dev->interface->dev,
- "Exchanging data failed (error 0x%x)", ret);
+ nfc_err(&dev->interface->dev,
+ "Exchanging data failed (error 0x%x)\n", ret);
rc = -EIO;
goto error;
}
@@ -2388,14 +2601,17 @@ static int pn533_fill_fragment_skbs(struct pn533 *dev, struct sk_buff *skb)
break;
}
- /* Reserve the TG/MI byte */
- skb_reserve(frag, 1);
+ if (!dev->tgt_mode) {
+ /* Reserve the TG/MI byte */
+ skb_reserve(frag, 1);
- /* MI + TG */
- if (frag_size == PN533_CMD_DATAFRAME_MAXLEN)
- *skb_push(frag, sizeof(u8)) = (PN533_CMD_MI_MASK | 1);
- else
- *skb_push(frag, sizeof(u8)) = 1; /* TG */
+ /* MI + TG */
+ if (frag_size == PN533_CMD_DATAFRAME_MAXLEN)
+ *skb_push(frag, sizeof(u8)) =
+ (PN533_CMD_MI_MASK | 1);
+ else
+ *skb_push(frag, sizeof(u8)) = 1; /* TG */
+ }
memcpy(skb_put(frag, frag_size), skb->data, frag_size);
@@ -2420,11 +2636,11 @@ static int pn533_transceive(struct nfc_dev *nfc_dev,
struct pn533_data_exchange_arg *arg = NULL;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (!dev->tgt_active_prot) {
- nfc_dev_err(&dev->interface->dev,
- "Can't exchange data if there is no active target");
+ nfc_err(&dev->interface->dev,
+ "Can't exchange data if there is no active target\n");
rc = -EINVAL;
goto error;
}
@@ -2487,13 +2703,18 @@ static int pn533_tm_send_complete(struct pn533 *dev, void *arg,
{
u8 status;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
if (IS_ERR(resp))
return PTR_ERR(resp);
status = resp->data[0];
+ /* Prepare for the next round */
+ if (skb_queue_len(&dev->fragment_skb) > 0) {
+ queue_work(dev->wq, &dev->mi_tm_tx_work);
+ return -EINPROGRESS;
+ }
dev_kfree_skb(resp);
if (status != 0) {
@@ -2514,19 +2735,34 @@ static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
struct pn533 *dev = nfc_get_drvdata(nfc_dev);
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
+ /* let's split in multiple chunks if size's too big */
if (skb->len > PN533_CMD_DATAEXCH_DATA_MAXLEN) {
- nfc_dev_err(&dev->interface->dev,
- "Data length greater than the max allowed: %d",
- PN533_CMD_DATAEXCH_DATA_MAXLEN);
- return -ENOSYS;
+ rc = pn533_fill_fragment_skbs(dev, skb);
+ if (rc <= 0)
+ goto error;
+
+ /* get the first skb */
+ skb = skb_dequeue(&dev->fragment_skb);
+ if (!skb) {
+ rc = -EIO;
+ goto error;
+ }
+
+ rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_META_DATA, skb,
+ pn533_tm_send_complete, NULL);
+ } else {
+ /* Send th skb */
+ rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,
+ pn533_tm_send_complete, NULL);
}
- rc = pn533_send_data_async(dev, PN533_CMD_TG_SET_DATA, skb,
- pn533_tm_send_complete, NULL);
- if (rc < 0)
+error:
+ if (rc < 0) {
dev_kfree_skb(skb);
+ skb_queue_purge(&dev->fragment_skb);
+ }
return rc;
}
@@ -2534,11 +2770,10 @@ static int pn533_tm_send(struct nfc_dev *nfc_dev, struct sk_buff *skb)
static void pn533_wq_mi_recv(struct work_struct *work)
{
struct pn533 *dev = container_of(work, struct pn533, mi_rx_work);
-
struct sk_buff *skb;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
skb = pn533_alloc_skb(dev, PN533_CMD_DATAEXCH_HEAD_LEN);
if (!skb)
@@ -2570,8 +2805,8 @@ static void pn533_wq_mi_recv(struct work_struct *work)
if (rc == 0) /* success */
return;
- nfc_dev_err(&dev->interface->dev,
- "Error %d when trying to perform data_exchange", rc);
+ nfc_err(&dev->interface->dev,
+ "Error %d when trying to perform data_exchange\n", rc);
dev_kfree_skb(skb);
kfree(dev->cmd_complete_mi_arg);
@@ -2587,7 +2822,7 @@ static void pn533_wq_mi_send(struct work_struct *work)
struct sk_buff *skb;
int rc;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
/* Grab the first skb in the queue */
skb = skb_dequeue(&dev->fragment_skb);
@@ -2625,8 +2860,8 @@ static void pn533_wq_mi_send(struct work_struct *work)
if (rc == 0) /* success */
return;
- nfc_dev_err(&dev->interface->dev,
- "Error %d when trying to perform data_exchange", rc);
+ nfc_err(&dev->interface->dev,
+ "Error %d when trying to perform data_exchange\n", rc);
dev_kfree_skb(skb);
kfree(dev->cmd_complete_dep_arg);
@@ -2641,10 +2876,9 @@ static int pn533_set_configuration(struct pn533 *dev, u8 cfgitem, u8 *cfgdata,
{
struct sk_buff *skb;
struct sk_buff *resp;
-
int skb_len;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
skb_len = sizeof(cfgitem) + cfgdata_len; /* cfgitem + cfgdata */
@@ -2691,7 +2925,7 @@ static int pn533_pasori_fw_reset(struct pn533 *dev)
struct sk_buff *skb;
struct sk_buff *resp;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
skb = pn533_alloc_skb(dev, sizeof(u8));
if (!skb)
@@ -2717,7 +2951,7 @@ static void pn533_acr122_poweron_rdr_resp(struct urb *urb)
{
struct pn533_acr122_poweron_rdr_arg *arg = urb->context;
- nfc_dev_dbg(&urb->dev->dev, "%s", __func__);
+ dev_dbg(&urb->dev->dev, "%s\n", __func__);
print_hex_dump_debug("ACR122 RX: ", DUMP_PREFIX_NONE, 16, 1,
urb->transfer_buffer, urb->transfer_buffer_length,
@@ -2737,7 +2971,7 @@ static int pn533_acr122_poweron_rdr(struct pn533 *dev)
void *cntx;
struct pn533_acr122_poweron_rdr_arg arg;
- nfc_dev_dbg(&dev->interface->dev, "%s", __func__);
+ dev_dbg(&dev->interface->dev, "%s\n", __func__);
init_completion(&arg.done);
cntx = dev->in_urb->context; /* backup context */
@@ -2755,16 +2989,15 @@ static int pn533_acr122_poweron_rdr(struct pn533 *dev)
rc = usb_submit_urb(dev->out_urb, GFP_KERNEL);
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "Reader power on cmd error %d", rc);
+ nfc_err(&dev->interface->dev,
+ "Reader power on cmd error %d\n", rc);
return rc;
}
rc = usb_submit_urb(dev->in_urb, GFP_KERNEL);
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "Can't submit for reader power on cmd response %d",
- rc);
+ nfc_err(&dev->interface->dev,
+ "Can't submit reader poweron cmd response %d\n", rc);
return rc;
}
@@ -2785,20 +3018,19 @@ static int pn533_rf_field(struct nfc_dev *nfc_dev, u8 rf)
rc = pn533_set_configuration(dev, PN533_CFGITEM_RF_FIELD,
(u8 *)&rf_field, 1);
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "Error on setting RF field");
+ nfc_err(&dev->interface->dev, "Error on setting RF field\n");
return rc;
}
return rc;
}
-int pn533_dev_up(struct nfc_dev *nfc_dev)
+static int pn533_dev_up(struct nfc_dev *nfc_dev)
{
return pn533_rf_field(nfc_dev, 1);
}
-int pn533_dev_down(struct nfc_dev *nfc_dev)
+static int pn533_dev_down(struct nfc_dev *nfc_dev)
{
return pn533_rf_field(nfc_dev, 0);
}
@@ -2839,16 +3071,16 @@ static int pn533_setup(struct pn533 *dev)
break;
default:
- nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
- dev->device_type);
+ nfc_err(&dev->interface->dev, "Unknown device type %d\n",
+ dev->device_type);
return -EINVAL;
}
rc = pn533_set_configuration(dev, PN533_CFGITEM_MAX_RETRIES,
(u8 *)&max_retries, sizeof(max_retries));
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "Error on setting MAX_RETRIES config");
+ nfc_err(&dev->interface->dev,
+ "Error on setting MAX_RETRIES config\n");
return rc;
}
@@ -2856,8 +3088,7 @@ static int pn533_setup(struct pn533 *dev)
rc = pn533_set_configuration(dev, PN533_CFGITEM_TIMING,
(u8 *)&timing, sizeof(timing));
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "Error on setting RF timings");
+ nfc_err(&dev->interface->dev, "Error on setting RF timings\n");
return rc;
}
@@ -2871,8 +3102,8 @@ static int pn533_setup(struct pn533 *dev)
rc = pn533_set_configuration(dev, PN533_CFGITEM_PASORI,
pasori_cfg, 3);
if (rc) {
- nfc_dev_err(&dev->interface->dev,
- "Error while settings PASORI config");
+ nfc_err(&dev->interface->dev,
+ "Error while settings PASORI config\n");
return rc;
}
@@ -2917,8 +3148,8 @@ static int pn533_probe(struct usb_interface *interface,
}
if (!in_endpoint || !out_endpoint) {
- nfc_dev_err(&interface->dev,
- "Could not find bulk-in or bulk-out endpoint");
+ nfc_err(&interface->dev,
+ "Could not find bulk-in or bulk-out endpoint\n");
rc = -ENODEV;
goto error;
}
@@ -2941,6 +3172,8 @@ static int pn533_probe(struct usb_interface *interface,
INIT_WORK(&dev->mi_rx_work, pn533_wq_mi_recv);
INIT_WORK(&dev->mi_tx_work, pn533_wq_mi_send);
INIT_WORK(&dev->tg_work, pn533_wq_tg_get_data);
+ INIT_WORK(&dev->mi_tm_rx_work, pn533_wq_tm_mi_recv);
+ INIT_WORK(&dev->mi_tm_tx_work, pn533_wq_tm_mi_send);
INIT_DELAYED_WORK(&dev->poll_work, pn533_wq_poll);
INIT_WORK(&dev->rf_work, pn533_wq_rf);
dev->wq = alloc_ordered_workqueue("pn533", 0);
@@ -2978,16 +3211,15 @@ static int pn533_probe(struct usb_interface *interface,
rc = pn533_acr122_poweron_rdr(dev);
if (rc < 0) {
- nfc_dev_err(&dev->interface->dev,
- "Couldn't poweron the reader (error %d)",
- rc);
+ nfc_err(&dev->interface->dev,
+ "Couldn't poweron the reader (error %d)\n", rc);
goto destroy_wq;
}
break;
default:
- nfc_dev_err(&dev->interface->dev, "Unknown device type %d\n",
- dev->device_type);
+ nfc_err(&dev->interface->dev, "Unknown device type %d\n",
+ dev->device_type);
rc = -EINVAL;
goto destroy_wq;
}
@@ -2997,9 +3229,9 @@ static int pn533_probe(struct usb_interface *interface,
if (rc < 0)
goto destroy_wq;
- nfc_dev_info(&dev->interface->dev,
- "NXP PN5%02X firmware ver %d.%d now attached",
- fw_ver.ic, fw_ver.ver, fw_ver.rev);
+ nfc_info(&dev->interface->dev,
+ "NXP PN5%02X firmware ver %d.%d now attached\n",
+ fw_ver.ic, fw_ver.ver, fw_ver.rev);
dev->nfc_dev = nfc_allocate_device(&pn533_nfc_ops, protocols,
@@ -3070,7 +3302,7 @@ static void pn533_disconnect(struct usb_interface *interface)
usb_free_urb(dev->out_urb);
kfree(dev);
- nfc_dev_info(&interface->dev, "NXP PN533 NFC device disconnected");
+ nfc_info(&interface->dev, "NXP PN533 NFC device disconnected\n");
}
static struct usb_driver pn533_driver = {
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.