zte's code,first commit
Change-Id: I9a04da59e459a9bc0d67f101f700d9d7dc8d681b
diff --git a/ap/os/linux/linux-3.4.x/net/nfc/nci/ntf.c b/ap/os/linux/linux-3.4.x/net/nfc/nci/ntf.c
new file mode 100644
index 0000000..e460cf1
--- /dev/null
+++ b/ap/os/linux/linux-3.4.x/net/nfc/nci/ntf.c
@@ -0,0 +1,555 @@
+/*
+ * The NFC Controller Interface is the communication protocol between an
+ * NFC Controller (NFCC) and a Device Host (DH).
+ *
+ * Copyright (C) 2011 Texas Instruments, Inc.
+ *
+ * Written by Ilan Elias <ilane@ti.com>
+ *
+ * Acknowledgements:
+ * This file is based on hci_event.c, which was written
+ * by Maxim Krasnyansky.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": %s: " fmt, __func__
+
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/bitops.h>
+#include <linux/skbuff.h>
+
+#include "../nfc.h"
+#include <net/nfc/nci.h>
+#include <net/nfc/nci_core.h>
+#include <linux/nfc.h>
+
+/* Handle NCI Notification packets */
+
+static void nci_core_conn_credits_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_core_conn_credit_ntf *ntf = (void *) skb->data;
+ int i;
+
+ pr_debug("num_entries %d\n", ntf->num_entries);
+
+ if (ntf->num_entries > NCI_MAX_NUM_CONN)
+ ntf->num_entries = NCI_MAX_NUM_CONN;
+
+ /* update the credits */
+ for (i = 0; i < ntf->num_entries; i++) {
+ ntf->conn_entries[i].conn_id =
+ nci_conn_id(&ntf->conn_entries[i].conn_id);
+
+ pr_debug("entry[%d]: conn_id %d, credits %d\n",
+ i, ntf->conn_entries[i].conn_id,
+ ntf->conn_entries[i].credits);
+
+ if (ntf->conn_entries[i].conn_id == NCI_STATIC_RF_CONN_ID) {
+ /* found static rf connection */
+ atomic_add(ntf->conn_entries[i].credits,
+ &ndev->credits_cnt);
+ }
+ }
+
+ /* trigger the next tx */
+ if (!skb_queue_empty(&ndev->tx_q))
+ queue_work(ndev->tx_wq, &ndev->tx_work);
+}
+
+static void nci_core_generic_error_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ __u8 status = skb->data[0];
+
+ pr_debug("status 0x%x\n", status);
+
+ if (atomic_read(&ndev->state) == NCI_W4_HOST_SELECT) {
+ /* Activation failed, so complete the request
+ (the state remains the same) */
+ nci_req_complete(ndev, status);
+ }
+}
+
+static void nci_core_conn_intf_error_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_core_intf_error_ntf *ntf = (void *) skb->data;
+
+ ntf->conn_id = nci_conn_id(&ntf->conn_id);
+
+ pr_debug("status 0x%x, conn_id %d\n", ntf->status, ntf->conn_id);
+
+ /* complete the data exchange transaction, if exists */
+ if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
+ nci_data_exchange_complete(ndev, NULL, -EIO);
+}
+
+static __u8 *nci_extract_rf_params_nfca_passive_poll(struct nci_dev *ndev,
+ struct rf_tech_specific_params_nfca_poll *nfca_poll,
+ __u8 *data)
+{
+ nfca_poll->sens_res = __le16_to_cpu(*((__u16 *)data));
+ data += 2;
+
+ nfca_poll->nfcid1_len = min_t(__u8, *data++, NFC_NFCID1_MAXSIZE);
+
+ pr_debug("sens_res 0x%x, nfcid1_len %d\n",
+ nfca_poll->sens_res, nfca_poll->nfcid1_len);
+
+ memcpy(nfca_poll->nfcid1, data, nfca_poll->nfcid1_len);
+ data += nfca_poll->nfcid1_len;
+
+ nfca_poll->sel_res_len = *data++;
+
+ if (nfca_poll->sel_res_len != 0)
+ nfca_poll->sel_res = *data++;
+
+ pr_debug("sel_res_len %d, sel_res 0x%x\n",
+ nfca_poll->sel_res_len,
+ nfca_poll->sel_res);
+
+ return data;
+}
+
+static __u8 *nci_extract_rf_params_nfcb_passive_poll(struct nci_dev *ndev,
+ struct rf_tech_specific_params_nfcb_poll *nfcb_poll,
+ __u8 *data)
+{
+ nfcb_poll->sensb_res_len = min_t(__u8, *data++, NFC_SENSB_RES_MAXSIZE);
+
+ pr_debug("sensb_res_len %d\n", nfcb_poll->sensb_res_len);
+
+ memcpy(nfcb_poll->sensb_res, data, nfcb_poll->sensb_res_len);
+ data += nfcb_poll->sensb_res_len;
+
+ return data;
+}
+
+static __u8 *nci_extract_rf_params_nfcf_passive_poll(struct nci_dev *ndev,
+ struct rf_tech_specific_params_nfcf_poll *nfcf_poll,
+ __u8 *data)
+{
+ nfcf_poll->bit_rate = *data++;
+ nfcf_poll->sensf_res_len = min_t(__u8, *data++, NFC_SENSF_RES_MAXSIZE);
+
+ pr_debug("bit_rate %d, sensf_res_len %d\n",
+ nfcf_poll->bit_rate, nfcf_poll->sensf_res_len);
+
+ memcpy(nfcf_poll->sensf_res, data, nfcf_poll->sensf_res_len);
+ data += nfcf_poll->sensf_res_len;
+
+ return data;
+}
+
+static int nci_add_new_protocol(struct nci_dev *ndev,
+ struct nfc_target *target,
+ __u8 rf_protocol,
+ __u8 rf_tech_and_mode,
+ void *params)
+{
+ struct rf_tech_specific_params_nfca_poll *nfca_poll;
+ struct rf_tech_specific_params_nfcb_poll *nfcb_poll;
+ struct rf_tech_specific_params_nfcf_poll *nfcf_poll;
+ __u32 protocol;
+
+ if (rf_protocol == NCI_RF_PROTOCOL_T2T)
+ protocol = NFC_PROTO_MIFARE_MASK;
+ else if (rf_protocol == NCI_RF_PROTOCOL_ISO_DEP)
+ protocol = NFC_PROTO_ISO14443_MASK;
+ else if (rf_protocol == NCI_RF_PROTOCOL_T3T)
+ protocol = NFC_PROTO_FELICA_MASK;
+ else
+ protocol = 0;
+
+ if (!(protocol & ndev->poll_prots)) {
+ pr_err("the target found does not have the desired protocol\n");
+ return -EPROTO;
+ }
+
+ if (rf_tech_and_mode == NCI_NFC_A_PASSIVE_POLL_MODE) {
+ nfca_poll = (struct rf_tech_specific_params_nfca_poll *)params;
+
+ target->sens_res = nfca_poll->sens_res;
+ target->sel_res = nfca_poll->sel_res;
+ target->nfcid1_len = nfca_poll->nfcid1_len;
+ if (target->nfcid1_len > 0) {
+ memcpy(target->nfcid1, nfca_poll->nfcid1,
+ target->nfcid1_len);
+ }
+ } else if (rf_tech_and_mode == NCI_NFC_B_PASSIVE_POLL_MODE) {
+ nfcb_poll = (struct rf_tech_specific_params_nfcb_poll *)params;
+
+ target->sensb_res_len = nfcb_poll->sensb_res_len;
+ if (target->sensb_res_len > 0) {
+ memcpy(target->sensb_res, nfcb_poll->sensb_res,
+ target->sensb_res_len);
+ }
+ } else if (rf_tech_and_mode == NCI_NFC_F_PASSIVE_POLL_MODE) {
+ nfcf_poll = (struct rf_tech_specific_params_nfcf_poll *)params;
+
+ target->sensf_res_len = nfcf_poll->sensf_res_len;
+ if (target->sensf_res_len > 0) {
+ memcpy(target->sensf_res, nfcf_poll->sensf_res,
+ target->sensf_res_len);
+ }
+ } else {
+ pr_err("unsupported rf_tech_and_mode 0x%x\n", rf_tech_and_mode);
+ return -EPROTO;
+ }
+
+ target->supported_protocols |= protocol;
+
+ pr_debug("protocol 0x%x\n", protocol);
+
+ return 0;
+}
+
+static void nci_add_new_target(struct nci_dev *ndev,
+ struct nci_rf_discover_ntf *ntf)
+{
+ struct nfc_target *target;
+ int i, rc;
+
+ for (i = 0; i < ndev->n_targets; i++) {
+ target = &ndev->targets[i];
+ if (target->idx == ntf->rf_discovery_id) {
+ /* This target already exists, add the new protocol */
+ nci_add_new_protocol(ndev, target, ntf->rf_protocol,
+ ntf->rf_tech_and_mode,
+ &ntf->rf_tech_specific_params);
+ return;
+ }
+ }
+
+ /* This is a new target, check if we've enough room */
+ if (ndev->n_targets == NCI_MAX_DISCOVERED_TARGETS) {
+ pr_debug("not enough room, ignoring new target...\n");
+ return;
+ }
+
+ target = &ndev->targets[ndev->n_targets];
+
+ rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol,
+ ntf->rf_tech_and_mode,
+ &ntf->rf_tech_specific_params);
+ if (!rc) {
+ target->idx = ntf->rf_discovery_id;
+ ndev->n_targets++;
+
+ pr_debug("target_idx %d, n_targets %d\n", target->idx,
+ ndev->n_targets);
+ }
+}
+
+void nci_clear_target_list(struct nci_dev *ndev)
+{
+ memset(ndev->targets, 0,
+ (sizeof(struct nfc_target)*NCI_MAX_DISCOVERED_TARGETS));
+
+ ndev->n_targets = 0;
+}
+
+static void nci_rf_discover_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_rf_discover_ntf ntf;
+ __u8 *data = skb->data;
+ bool add_target = true;
+
+ ntf.rf_discovery_id = *data++;
+ ntf.rf_protocol = *data++;
+ ntf.rf_tech_and_mode = *data++;
+ ntf.rf_tech_specific_params_len = *data++;
+
+ pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
+ pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
+ pr_debug("rf_tech_and_mode 0x%x\n", ntf.rf_tech_and_mode);
+ pr_debug("rf_tech_specific_params_len %d\n",
+ ntf.rf_tech_specific_params_len);
+
+ if (ntf.rf_tech_specific_params_len > 0) {
+ switch (ntf.rf_tech_and_mode) {
+ case NCI_NFC_A_PASSIVE_POLL_MODE:
+ data = nci_extract_rf_params_nfca_passive_poll(ndev,
+ &(ntf.rf_tech_specific_params.nfca_poll), data);
+ break;
+
+ case NCI_NFC_B_PASSIVE_POLL_MODE:
+ data = nci_extract_rf_params_nfcb_passive_poll(ndev,
+ &(ntf.rf_tech_specific_params.nfcb_poll), data);
+ break;
+
+ case NCI_NFC_F_PASSIVE_POLL_MODE:
+ data = nci_extract_rf_params_nfcf_passive_poll(ndev,
+ &(ntf.rf_tech_specific_params.nfcf_poll), data);
+ break;
+
+ default:
+ pr_err("unsupported rf_tech_and_mode 0x%x\n",
+ ntf.rf_tech_and_mode);
+ data += ntf.rf_tech_specific_params_len;
+ add_target = false;
+ }
+ }
+
+ ntf.ntf_type = *data++;
+ pr_debug("ntf_type %d\n", ntf.ntf_type);
+
+ if (add_target == true)
+ nci_add_new_target(ndev, &ntf);
+
+ if (ntf.ntf_type == NCI_DISCOVER_NTF_TYPE_MORE) {
+ atomic_set(&ndev->state, NCI_W4_ALL_DISCOVERIES);
+ } else {
+ atomic_set(&ndev->state, NCI_W4_HOST_SELECT);
+ nfc_targets_found(ndev->nfc_dev, ndev->targets,
+ ndev->n_targets);
+ }
+}
+
+static int nci_extract_activation_params_iso_dep(struct nci_dev *ndev,
+ struct nci_rf_intf_activated_ntf *ntf, __u8 *data)
+{
+ struct activation_params_nfca_poll_iso_dep *nfca_poll;
+ struct activation_params_nfcb_poll_iso_dep *nfcb_poll;
+
+ switch (ntf->activation_rf_tech_and_mode) {
+ case NCI_NFC_A_PASSIVE_POLL_MODE:
+ nfca_poll = &ntf->activation_params.nfca_poll_iso_dep;
+ nfca_poll->rats_res_len = min_t(__u8, *data++, 20);
+ pr_debug("rats_res_len %d\n", nfca_poll->rats_res_len);
+ if (nfca_poll->rats_res_len > 0) {
+ memcpy(nfca_poll->rats_res,
+ data, nfca_poll->rats_res_len);
+ }
+ break;
+
+ case NCI_NFC_B_PASSIVE_POLL_MODE:
+ nfcb_poll = &ntf->activation_params.nfcb_poll_iso_dep;
+ nfcb_poll->attrib_res_len = min_t(__u8, *data++, 50);
+ pr_debug("attrib_res_len %d\n", nfcb_poll->attrib_res_len);
+ if (nfcb_poll->attrib_res_len > 0) {
+ memcpy(nfcb_poll->attrib_res,
+ data, nfcb_poll->attrib_res_len);
+ }
+ break;
+
+ default:
+ pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
+ ntf->activation_rf_tech_and_mode);
+ return NCI_STATUS_RF_PROTOCOL_ERROR;
+ }
+
+ return NCI_STATUS_OK;
+}
+
+static void nci_target_auto_activated(struct nci_dev *ndev,
+ struct nci_rf_intf_activated_ntf *ntf)
+{
+ struct nfc_target *target;
+ int rc;
+
+ target = &ndev->targets[ndev->n_targets];
+
+ rc = nci_add_new_protocol(ndev, target, ntf->rf_protocol,
+ ntf->activation_rf_tech_and_mode,
+ &ntf->rf_tech_specific_params);
+ if (rc)
+ return;
+
+ target->idx = ntf->rf_discovery_id;
+ ndev->n_targets++;
+
+ pr_debug("target_idx %d, n_targets %d\n", target->idx, ndev->n_targets);
+
+ nfc_targets_found(ndev->nfc_dev, ndev->targets, ndev->n_targets);
+}
+
+static void nci_rf_intf_activated_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_rf_intf_activated_ntf ntf;
+ __u8 *data = skb->data;
+ int err = NCI_STATUS_OK;
+
+ ntf.rf_discovery_id = *data++;
+ ntf.rf_interface = *data++;
+ ntf.rf_protocol = *data++;
+ ntf.activation_rf_tech_and_mode = *data++;
+ ntf.max_data_pkt_payload_size = *data++;
+ ntf.initial_num_credits = *data++;
+ ntf.rf_tech_specific_params_len = *data++;
+
+ pr_debug("rf_discovery_id %d\n", ntf.rf_discovery_id);
+ pr_debug("rf_interface 0x%x\n", ntf.rf_interface);
+ pr_debug("rf_protocol 0x%x\n", ntf.rf_protocol);
+ pr_debug("activation_rf_tech_and_mode 0x%x\n",
+ ntf.activation_rf_tech_and_mode);
+ pr_debug("max_data_pkt_payload_size 0x%x\n",
+ ntf.max_data_pkt_payload_size);
+ pr_debug("initial_num_credits 0x%x\n",
+ ntf.initial_num_credits);
+ pr_debug("rf_tech_specific_params_len %d\n",
+ ntf.rf_tech_specific_params_len);
+
+ if (ntf.rf_tech_specific_params_len > 0) {
+ switch (ntf.activation_rf_tech_and_mode) {
+ case NCI_NFC_A_PASSIVE_POLL_MODE:
+ data = nci_extract_rf_params_nfca_passive_poll(ndev,
+ &(ntf.rf_tech_specific_params.nfca_poll), data);
+ break;
+
+ case NCI_NFC_B_PASSIVE_POLL_MODE:
+ data = nci_extract_rf_params_nfcb_passive_poll(ndev,
+ &(ntf.rf_tech_specific_params.nfcb_poll), data);
+ break;
+
+ case NCI_NFC_F_PASSIVE_POLL_MODE:
+ data = nci_extract_rf_params_nfcf_passive_poll(ndev,
+ &(ntf.rf_tech_specific_params.nfcf_poll), data);
+ break;
+
+ default:
+ pr_err("unsupported activation_rf_tech_and_mode 0x%x\n",
+ ntf.activation_rf_tech_and_mode);
+ err = NCI_STATUS_RF_PROTOCOL_ERROR;
+ goto exit;
+ }
+ }
+
+ ntf.data_exch_rf_tech_and_mode = *data++;
+ ntf.data_exch_tx_bit_rate = *data++;
+ ntf.data_exch_rx_bit_rate = *data++;
+ ntf.activation_params_len = *data++;
+
+ pr_debug("data_exch_rf_tech_and_mode 0x%x\n",
+ ntf.data_exch_rf_tech_and_mode);
+ pr_debug("data_exch_tx_bit_rate 0x%x\n", ntf.data_exch_tx_bit_rate);
+ pr_debug("data_exch_rx_bit_rate 0x%x\n", ntf.data_exch_rx_bit_rate);
+ pr_debug("activation_params_len %d\n", ntf.activation_params_len);
+
+ if (ntf.activation_params_len > 0) {
+ switch (ntf.rf_interface) {
+ case NCI_RF_INTERFACE_ISO_DEP:
+ err = nci_extract_activation_params_iso_dep(ndev,
+ &ntf, data);
+ break;
+
+ case NCI_RF_INTERFACE_FRAME:
+ /* no activation params */
+ break;
+
+ default:
+ pr_err("unsupported rf_interface 0x%x\n",
+ ntf.rf_interface);
+ err = NCI_STATUS_RF_PROTOCOL_ERROR;
+ break;
+ }
+ }
+
+exit:
+ if (err == NCI_STATUS_OK) {
+ ndev->max_data_pkt_payload_size = ntf.max_data_pkt_payload_size;
+ ndev->initial_num_credits = ntf.initial_num_credits;
+
+ /* set the available credits to initial value */
+ atomic_set(&ndev->credits_cnt, ndev->initial_num_credits);
+ }
+
+ if (atomic_read(&ndev->state) == NCI_DISCOVERY) {
+ /* A single target was found and activated automatically */
+ atomic_set(&ndev->state, NCI_POLL_ACTIVE);
+ if (err == NCI_STATUS_OK)
+ nci_target_auto_activated(ndev, &ntf);
+ } else { /* ndev->state == NCI_W4_HOST_SELECT */
+ /* A selected target was activated, so complete the request */
+ atomic_set(&ndev->state, NCI_POLL_ACTIVE);
+ nci_req_complete(ndev, err);
+ }
+}
+
+static void nci_rf_deactivate_ntf_packet(struct nci_dev *ndev,
+ struct sk_buff *skb)
+{
+ struct nci_rf_deactivate_ntf *ntf = (void *) skb->data;
+
+ pr_debug("entry, type 0x%x, reason 0x%x\n", ntf->type, ntf->reason);
+
+ /* drop tx data queue */
+ skb_queue_purge(&ndev->tx_q);
+
+ /* drop partial rx data packet */
+ if (ndev->rx_data_reassembly) {
+ kfree_skb(ndev->rx_data_reassembly);
+ ndev->rx_data_reassembly = 0;
+ }
+
+ /* complete the data exchange transaction, if exists */
+ if (test_bit(NCI_DATA_EXCHANGE, &ndev->flags))
+ nci_data_exchange_complete(ndev, NULL, -EIO);
+
+ nci_clear_target_list(ndev);
+ atomic_set(&ndev->state, NCI_IDLE);
+ nci_req_complete(ndev, NCI_STATUS_OK);
+}
+
+void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb)
+{
+ __u16 ntf_opcode = nci_opcode(skb->data);
+
+ pr_debug("NCI RX: MT=ntf, PBF=%d, GID=0x%x, OID=0x%x, plen=%d\n",
+ nci_pbf(skb->data),
+ nci_opcode_gid(ntf_opcode),
+ nci_opcode_oid(ntf_opcode),
+ nci_plen(skb->data));
+
+ /* strip the nci control header */
+ skb_pull(skb, NCI_CTRL_HDR_SIZE);
+
+ switch (ntf_opcode) {
+ case NCI_OP_CORE_CONN_CREDITS_NTF:
+ nci_core_conn_credits_ntf_packet(ndev, skb);
+ break;
+
+ case NCI_OP_CORE_GENERIC_ERROR_NTF:
+ nci_core_generic_error_ntf_packet(ndev, skb);
+ break;
+
+ case NCI_OP_CORE_INTF_ERROR_NTF:
+ nci_core_conn_intf_error_ntf_packet(ndev, skb);
+ break;
+
+ case NCI_OP_RF_DISCOVER_NTF:
+ nci_rf_discover_ntf_packet(ndev, skb);
+ break;
+
+ case NCI_OP_RF_INTF_ACTIVATED_NTF:
+ nci_rf_intf_activated_ntf_packet(ndev, skb);
+ break;
+
+ case NCI_OP_RF_DEACTIVATE_NTF:
+ nci_rf_deactivate_ntf_packet(ndev, skb);
+ break;
+
+ default:
+ pr_err("unknown ntf opcode 0x%x\n", ntf_opcode);
+ break;
+ }
+
+ kfree_skb(skb);
+}