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authorSrikant Patnaik2015-01-11 12:28:04 +0530
committerSrikant Patnaik2015-01-11 12:28:04 +0530
commit871480933a1c28f8a9fed4c4d34d06c439a7a422 (patch)
tree8718f573808810c2a1e8cb8fb6ac469093ca2784 /include/net/nfc/nci_core.h
parent9d40ac5867b9aefe0722bc1f110b965ff294d30d (diff)
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Moved, renamed, and deleted files
The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure.
Diffstat (limited to 'include/net/nfc/nci_core.h')
-rw-r--r--include/net/nfc/nci_core.h199
1 files changed, 199 insertions, 0 deletions
diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
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--- /dev/null
+++ b/include/net/nfc/nci_core.h
@@ -0,0 +1,199 @@
+/*
+ * 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_core.h, 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
+ *
+ */
+
+#ifndef __NCI_CORE_H
+#define __NCI_CORE_H
+
+#include <linux/interrupt.h>
+#include <linux/skbuff.h>
+
+#include <net/nfc/nfc.h>
+#include <net/nfc/nci.h>
+
+/* NCI device flags */
+enum nci_flag {
+ NCI_INIT,
+ NCI_UP,
+ NCI_DATA_EXCHANGE,
+ NCI_DATA_EXCHANGE_TO,
+};
+
+/* NCI device states */
+enum nci_state {
+ NCI_IDLE,
+ NCI_DISCOVERY,
+ NCI_W4_ALL_DISCOVERIES,
+ NCI_W4_HOST_SELECT,
+ NCI_POLL_ACTIVE,
+};
+
+/* NCI timeouts */
+#define NCI_RESET_TIMEOUT 5000
+#define NCI_INIT_TIMEOUT 5000
+#define NCI_RF_DISC_TIMEOUT 5000
+#define NCI_RF_DISC_SELECT_TIMEOUT 5000
+#define NCI_RF_DEACTIVATE_TIMEOUT 30000
+#define NCI_CMD_TIMEOUT 5000
+#define NCI_DATA_TIMEOUT 700
+
+struct nci_dev;
+
+struct nci_ops {
+ int (*open)(struct nci_dev *ndev);
+ int (*close)(struct nci_dev *ndev);
+ int (*send)(struct sk_buff *skb);
+};
+
+#define NCI_MAX_SUPPORTED_RF_INTERFACES 4
+#define NCI_MAX_DISCOVERED_TARGETS 10
+
+/* NCI Core structures */
+struct nci_dev {
+ struct nfc_dev *nfc_dev;
+ struct nci_ops *ops;
+
+ int tx_headroom;
+ int tx_tailroom;
+
+ atomic_t state;
+ unsigned long flags;
+
+ atomic_t cmd_cnt;
+ atomic_t credits_cnt;
+
+ struct timer_list cmd_timer;
+ struct timer_list data_timer;
+
+ struct workqueue_struct *cmd_wq;
+ struct work_struct cmd_work;
+
+ struct workqueue_struct *rx_wq;
+ struct work_struct rx_work;
+
+ struct workqueue_struct *tx_wq;
+ struct work_struct tx_work;
+
+ struct sk_buff_head cmd_q;
+ struct sk_buff_head rx_q;
+ struct sk_buff_head tx_q;
+
+ struct mutex req_lock;
+ struct completion req_completion;
+ __u32 req_status;
+ __u32 req_result;
+
+ void *driver_data;
+
+ __u32 poll_prots;
+ __u32 target_active_prot;
+
+ struct nfc_target targets[NCI_MAX_DISCOVERED_TARGETS];
+ int n_targets;
+
+ /* received during NCI_OP_CORE_RESET_RSP */
+ __u8 nci_ver;
+
+ /* received during NCI_OP_CORE_INIT_RSP */
+ __u32 nfcc_features;
+ __u8 num_supported_rf_interfaces;
+ __u8 supported_rf_interfaces
+ [NCI_MAX_SUPPORTED_RF_INTERFACES];
+ __u8 max_logical_connections;
+ __u16 max_routing_table_size;
+ __u8 max_ctrl_pkt_payload_len;
+ __u16 max_size_for_large_params;
+ __u8 manufact_id;
+ __u32 manufact_specific_info;
+
+ /* received during NCI_OP_RF_INTF_ACTIVATED_NTF */
+ __u8 max_data_pkt_payload_size;
+ __u8 initial_num_credits;
+
+ /* stored during nci_data_exchange */
+ data_exchange_cb_t data_exchange_cb;
+ void *data_exchange_cb_context;
+ struct sk_buff *rx_data_reassembly;
+};
+
+/* ----- NCI Devices ----- */
+struct nci_dev *nci_allocate_device(struct nci_ops *ops,
+ __u32 supported_protocols,
+ int tx_headroom,
+ int tx_tailroom);
+void nci_free_device(struct nci_dev *ndev);
+int nci_register_device(struct nci_dev *ndev);
+void nci_unregister_device(struct nci_dev *ndev);
+int nci_recv_frame(struct sk_buff *skb);
+
+static inline struct sk_buff *nci_skb_alloc(struct nci_dev *ndev,
+ unsigned int len,
+ gfp_t how)
+{
+ struct sk_buff *skb;
+
+ skb = alloc_skb(len + ndev->tx_headroom + ndev->tx_tailroom, how);
+ if (skb)
+ skb_reserve(skb, ndev->tx_headroom);
+
+ return skb;
+}
+
+static inline void nci_set_parent_dev(struct nci_dev *ndev, struct device *dev)
+{
+ nfc_set_parent_dev(ndev->nfc_dev, dev);
+}
+
+static inline void nci_set_drvdata(struct nci_dev *ndev, void *data)
+{
+ ndev->driver_data = data;
+}
+
+static inline void *nci_get_drvdata(struct nci_dev *ndev)
+{
+ return ndev->driver_data;
+}
+
+void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb);
+void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb);
+void nci_rx_data_packet(struct nci_dev *ndev, struct sk_buff *skb);
+int nci_send_cmd(struct nci_dev *ndev, __u16 opcode, __u8 plen, void *payload);
+int nci_send_data(struct nci_dev *ndev, __u8 conn_id, struct sk_buff *skb);
+void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb,
+ int err);
+void nci_clear_target_list(struct nci_dev *ndev);
+
+/* ----- NCI requests ----- */
+#define NCI_REQ_DONE 0
+#define NCI_REQ_PEND 1
+#define NCI_REQ_CANCELED 2
+
+void nci_req_complete(struct nci_dev *ndev, int result);
+
+/* ----- NCI status code ----- */
+int nci_to_errno(__u8 code);
+
+#endif /* __NCI_CORE_H */