static int nci_start_poll(struct nfc_dev *nfc_dev, __u32 protocols)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
int rc;
nfc_dbg("entry");
if (test_bit(NCI_DISCOVERY, &ndev->flags)) {
nfc_err("unable to start poll, since poll is already active");
return -EBUSY;
}
if (test_bit(NCI_POLL_ACTIVE, &ndev->flags)) {
nfc_dbg("target already active, first deactivate...");
rc = nci_request(ndev, nci_rf_deactivate_req, 0,
msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
if (rc)
return -EBUSY;
}
rc = nci_request(ndev, nci_rf_discover_req, protocols,
msecs_to_jiffies(NCI_RF_DISC_TIMEOUT));
if (!rc)
ndev->poll_prots = protocols;
return rc;
}
static int nci_start_poll(struct nfc_dev *nfc_dev,
__u32 im_protocols, __u32 tm_protocols)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
int rc;
if ((atomic_read(&ndev->state) == NCI_DISCOVERY) ||
(atomic_read(&ndev->state) == NCI_W4_ALL_DISCOVERIES)) {
pr_err("unable to start poll, since poll is already active\n");
return -EBUSY;
}
if (ndev->target_active_prot) {
pr_err("there is an active target\n");
return -EBUSY;
}
if ((atomic_read(&ndev->state) == NCI_W4_HOST_SELECT) ||
(atomic_read(&ndev->state) == NCI_POLL_ACTIVE)) {
pr_debug("target active or w4 select, implicitly deactivate\n");
rc = nci_request(ndev, nci_rf_deactivate_req, 0,
msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
if (rc)
return -EBUSY;
}
rc = nci_request(ndev, nci_rf_discover_req, im_protocols,
msecs_to_jiffies(NCI_RF_DISC_TIMEOUT));
if (!rc)
ndev->poll_prots = im_protocols;
return rc;
}
static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
struct nci_set_config_param param;
__u8 local_gb[NFC_MAX_GT_LEN];
int i, rc = 0;
param.val = nfc_get_local_general_bytes(nfc_dev, ¶m.len);
if ((param.val == NULL) || (param.len == 0))
return rc;
if (param.len > NCI_MAX_PARAM_LEN)
return -EINVAL;
for (i = 0; i < param.len; i++)
local_gb[param.len-1-i] = param.val[i];
param.id = NCI_PN_ATR_REQ_GEN_BYTES;
param.val = local_gb;
rc = nci_request(ndev, nci_set_config_req, (unsigned long)¶m,
msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
return rc;
}
static void nci_stop_poll(struct nfc_dev *nfc_dev)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
if ((atomic_read(&ndev->state) != NCI_DISCOVERY) &&
(atomic_read(&ndev->state) != NCI_W4_ALL_DISCOVERIES)) {
pr_err("unable to stop poll, since poll is not active\n");
return;
}
nci_request(ndev, nci_rf_deactivate_req, 0,
msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
}
static void nci_stop_poll(struct nfc_dev *nfc_dev)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
nfc_dbg("entry");
if (!test_bit(NCI_DISCOVERY, &ndev->flags)) {
nfc_err("unable to stop poll, since poll is not active");
return;
}
nci_request(ndev, nci_rf_deactivate_req, 0,
msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
}
static int nci_set_local_general_bytes(struct nfc_dev *nfc_dev)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
struct nci_set_config_param param;
param.val = nfc_get_local_general_bytes(nfc_dev, ¶m.len);
if ((param.val == NULL) || (param.len == 0))
return 0;
if (param.len > NFC_MAX_GT_LEN)
return -EINVAL;
param.id = NCI_PN_ATR_REQ_GEN_BYTES;
return nci_request(ndev, nci_set_config_req, (unsigned long)¶m,
msecs_to_jiffies(NCI_SET_CONFIG_TIMEOUT));
}
static void nci_deactivate_target(struct nfc_dev *nfc_dev, __u32 target_idx)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
nfc_dbg("entry, target_idx %d", target_idx);
if (!ndev->target_active_prot) {
nfc_err("unable to deactivate target, no active target");
return;
}
ndev->target_active_prot = 0;
if (test_bit(NCI_POLL_ACTIVE, &ndev->flags)) {
nci_request(ndev, nci_rf_deactivate_req, 0,
msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
}
}
static void nci_deactivate_target(struct nfc_dev *nfc_dev, __u32 target_idx)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
pr_debug("target_idx %d\n", target_idx);
if (!ndev->target_active_prot) {
pr_err("unable to deactivate target, no active target\n");
return;
}
ndev->target_active_prot = 0;
if (atomic_read(&ndev->state) == NCI_POLL_ACTIVE) {
nci_request(ndev, nci_rf_deactivate_req, 0,
msecs_to_jiffies(NCI_RF_DEACTIVATE_TIMEOUT));
}
}
int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd,
const u8 *param, size_t param_len,
struct sk_buff **skb)
{
struct nci_hcp_message *message;
struct nci_conn_info *conn_info;
struct nci_data data;
int r;
u8 pipe = ndev->hci_dev->gate2pipe[gate];
if (pipe == NCI_HCI_INVALID_PIPE)
return -EADDRNOTAVAIL;
conn_info = ndev->hci_dev->conn_info;
if (!conn_info)
return -EPROTO;
data.conn_id = conn_info->conn_id;
data.pipe = pipe;
data.cmd = NCI_HCP_HEADER(NCI_HCI_HCP_COMMAND, cmd);
data.data = param;
data.data_len = param_len;
r = nci_request(ndev, nci_hci_send_data_req, (unsigned long)&data,
msecs_to_jiffies(NCI_DATA_TIMEOUT));
if (r == NCI_STATUS_OK) {
message = (struct nci_hcp_message *)conn_info->rx_skb->data;
r = nci_hci_result_to_errno(
NCI_HCP_MSG_GET_CMD(message->header));
skb_pull(conn_info->rx_skb, NCI_HCI_HCP_MESSAGE_HEADER_LEN);
if (!r && skb)
*skb = conn_info->rx_skb;
}
return r;
}
static int nci_activate_target(struct nfc_dev *nfc_dev,
struct nfc_target *target, __u32 protocol)
{
struct nci_dev *ndev = nfc_get_drvdata(nfc_dev);
struct nci_rf_discover_select_param param;
struct nfc_target *nci_target = NULL;
int i;
int rc = 0;
pr_debug("target_idx %d, protocol 0x%x\n", target->idx, protocol);
if ((atomic_read(&ndev->state) != NCI_W4_HOST_SELECT) &&
(atomic_read(&ndev->state) != NCI_POLL_ACTIVE)) {
pr_err("there is no available target to activate\n");
return -EINVAL;
}
if (ndev->target_active_prot) {
pr_err("there is already an active target\n");
return -EBUSY;
}
for (i = 0; i < ndev->n_targets; i++) {
if (ndev->targets[i].idx == target->idx) {
nci_target = &ndev->targets[i];
break;
}
}
if (!nci_target) {
pr_err("unable to find the selected target\n");
return -EINVAL;
}
if (!(nci_target->supported_protocols & (1 << protocol))) {
pr_err("target does not support the requested protocol 0x%x\n",
protocol);
return -EINVAL;
}
if (atomic_read(&ndev->state) == NCI_W4_HOST_SELECT) {
param.rf_discovery_id = nci_target->logical_idx;
if (protocol == NFC_PROTO_JEWEL)
param.rf_protocol = NCI_RF_PROTOCOL_T1T;
else if (protocol == NFC_PROTO_MIFARE)
param.rf_protocol = NCI_RF_PROTOCOL_T2T;
else if (protocol == NFC_PROTO_FELICA)
param.rf_protocol = NCI_RF_PROTOCOL_T3T;
else if (protocol == NFC_PROTO_ISO14443 ||
protocol == NFC_PROTO_ISO14443_B)
param.rf_protocol = NCI_RF_PROTOCOL_ISO_DEP;
else
param.rf_protocol = NCI_RF_PROTOCOL_NFC_DEP;
rc = nci_request(ndev, nci_rf_discover_select_req,
(unsigned long)¶m,
msecs_to_jiffies(NCI_RF_DISC_SELECT_TIMEOUT));
}
if (!rc)
ndev->target_active_prot = protocol;
return rc;
}
