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2024-09-09 08:52:07 +00:00
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kernel/include/net/nfc/nci.h
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/*
* 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.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_H
#define __NCI_H
/* NCI constants */
#define NCI_MAX_NUM_MAPPING_CONFIGS 10
#define NCI_MAX_NUM_RF_CONFIGS 10
#define NCI_MAX_NUM_CONN 10
/* NCI Status Codes */
#define NCI_STATUS_OK 0x00
#define NCI_STATUS_REJECTED 0x01
#define NCI_STATUS_RF_FRAME_CORRUPTED 0x02
#define NCI_STATUS_FAILED 0x03
#define NCI_STATUS_NOT_INITIALIZED 0x04
#define NCI_STATUS_SYNTAX_ERROR 0x05
#define NCI_STATUS_SEMANTIC_ERROR 0x06
#define NCI_STATUS_UNKNOWN_GID 0x07
#define NCI_STATUS_UNKNOWN_OID 0x08
#define NCI_STATUS_INVALID_PARAM 0x09
#define NCI_STATUS_MESSAGE_SIZE_EXCEEDED 0x0a
/* Discovery Specific Status Codes */
#define NCI_STATUS_DISCOVERY_ALREADY_STARTED 0xa0
#define NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED 0xa1
#define NCI_STATUS_DISCOVERY_TEAR_DOWN 0xa2
/* RF Interface Specific Status Codes */
#define NCI_STATUS_RF_TRANSMISSION_ERROR 0xb0
#define NCI_STATUS_RF_PROTOCOL_ERROR 0xb1
#define NCI_STATUS_RF_TIMEOUT_ERROR 0xb2
/* NFCEE Interface Specific Status Codes */
#define NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED 0xc0
#define NCI_STATUS_NFCEE_TRANSMISSION_ERROR 0xc1
#define NCI_STATUS_NFCEE_PROTOCOL_ERROR 0xc2
#define NCI_STATUS_NFCEE_TIMEOUT_ERROR 0xc3
/* NCI RF Technology and Mode */
#define NCI_NFC_A_PASSIVE_POLL_MODE 0x00
#define NCI_NFC_B_PASSIVE_POLL_MODE 0x01
#define NCI_NFC_F_PASSIVE_POLL_MODE 0x02
#define NCI_NFC_A_ACTIVE_POLL_MODE 0x03
#define NCI_NFC_F_ACTIVE_POLL_MODE 0x05
#define NCI_NFC_15693_PASSIVE_POLL_MODE 0x06
#define NCI_NFC_A_PASSIVE_LISTEN_MODE 0x80
#define NCI_NFC_B_PASSIVE_LISTEN_MODE 0x81
#define NCI_NFC_F_PASSIVE_LISTEN_MODE 0x82
#define NCI_NFC_A_ACTIVE_LISTEN_MODE 0x83
#define NCI_NFC_F_ACTIVE_LISTEN_MODE 0x85
#define NCI_NFC_15693_PASSIVE_LISTEN_MODE 0x86
/* NCI RF Technologies */
#define NCI_NFC_RF_TECHNOLOGY_A 0x00
#define NCI_NFC_RF_TECHNOLOGY_B 0x01
#define NCI_NFC_RF_TECHNOLOGY_F 0x02
#define NCI_NFC_RF_TECHNOLOGY_15693 0x03
/* NCI Bit Rates */
#define NCI_NFC_BIT_RATE_106 0x00
#define NCI_NFC_BIT_RATE_212 0x01
#define NCI_NFC_BIT_RATE_424 0x02
#define NCI_NFC_BIT_RATE_848 0x03
#define NCI_NFC_BIT_RATE_1695 0x04
#define NCI_NFC_BIT_RATE_3390 0x05
#define NCI_NFC_BIT_RATE_6780 0x06
/* NCI RF Protocols */
#define NCI_RF_PROTOCOL_UNKNOWN 0x00
#define NCI_RF_PROTOCOL_T1T 0x01
#define NCI_RF_PROTOCOL_T2T 0x02
#define NCI_RF_PROTOCOL_T3T 0x03
#define NCI_RF_PROTOCOL_ISO_DEP 0x04
#define NCI_RF_PROTOCOL_NFC_DEP 0x05
/* NCI RF Interfaces */
#define NCI_RF_INTERFACE_NFCEE_DIRECT 0x00
#define NCI_RF_INTERFACE_FRAME 0x01
#define NCI_RF_INTERFACE_ISO_DEP 0x02
#define NCI_RF_INTERFACE_NFC_DEP 0x03
/* NCI Reset types */
#define NCI_RESET_TYPE_KEEP_CONFIG 0x00
#define NCI_RESET_TYPE_RESET_CONFIG 0x01
/* NCI Static RF connection ID */
#define NCI_STATIC_RF_CONN_ID 0x00
/* NCI Data Flow Control */
#define NCI_DATA_FLOW_CONTROL_NOT_USED 0xff
/* NCI RF_DISCOVER_MAP_CMD modes */
#define NCI_DISC_MAP_MODE_POLL 0x01
#define NCI_DISC_MAP_MODE_LISTEN 0x02
/* NCI Discover Notification Type */
#define NCI_DISCOVER_NTF_TYPE_LAST 0x00
#define NCI_DISCOVER_NTF_TYPE_LAST_NFCC 0x01
#define NCI_DISCOVER_NTF_TYPE_MORE 0x02
/* NCI Deactivation Type */
#define NCI_DEACTIVATE_TYPE_IDLE_MODE 0x00
#define NCI_DEACTIVATE_TYPE_SLEEP_MODE 0x01
#define NCI_DEACTIVATE_TYPE_SLEEP_AF_MODE 0x02
#define NCI_DEACTIVATE_TYPE_DISCOVERY 0x03
/* Message Type (MT) */
#define NCI_MT_DATA_PKT 0x00
#define NCI_MT_CMD_PKT 0x01
#define NCI_MT_RSP_PKT 0x02
#define NCI_MT_NTF_PKT 0x03
#define nci_mt(hdr) (((hdr)[0]>>5)&0x07)
#define nci_mt_set(hdr, mt) ((hdr)[0] |= (__u8)(((mt)&0x07)<<5))
/* Packet Boundary Flag (PBF) */
#define NCI_PBF_LAST 0x00
#define NCI_PBF_CONT 0x01
#define nci_pbf(hdr) (__u8)(((hdr)[0]>>4)&0x01)
#define nci_pbf_set(hdr, pbf) ((hdr)[0] |= (__u8)(((pbf)&0x01)<<4))
/* Control Opcode manipulation */
#define nci_opcode_pack(gid, oid) (__u16)((((__u16)((gid)&0x0f))<<8)|\
((__u16)((oid)&0x3f)))
#define nci_opcode(hdr) nci_opcode_pack(hdr[0], hdr[1])
#define nci_opcode_gid(op) (__u8)(((op)&0x0f00)>>8)
#define nci_opcode_oid(op) (__u8)((op)&0x003f)
/* Payload Length */
#define nci_plen(hdr) (__u8)((hdr)[2])
/* Connection ID */
#define nci_conn_id(hdr) (__u8)(((hdr)[0])&0x0f)
/* GID values */
#define NCI_GID_CORE 0x0
#define NCI_GID_RF_MGMT 0x1
#define NCI_GID_NFCEE_MGMT 0x2
#define NCI_GID_PROPRIETARY 0xf
/* ---- NCI Packet structures ---- */
#define NCI_CTRL_HDR_SIZE 3
#define NCI_DATA_HDR_SIZE 3
struct nci_ctrl_hdr {
__u8 gid; /* MT & PBF & GID */
__u8 oid;
__u8 plen;
} __packed;
struct nci_data_hdr {
__u8 conn_id; /* MT & PBF & ConnID */
__u8 rfu;
__u8 plen;
} __packed;
/* ------------------------ */
/* ----- NCI Commands ---- */
/* ------------------------ */
#define NCI_OP_CORE_RESET_CMD nci_opcode_pack(NCI_GID_CORE, 0x00)
struct nci_core_reset_cmd {
__u8 reset_type;
} __packed;
#define NCI_OP_CORE_INIT_CMD nci_opcode_pack(NCI_GID_CORE, 0x01)
#define NCI_OP_RF_DISCOVER_MAP_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
struct disc_map_config {
__u8 rf_protocol;
__u8 mode;
__u8 rf_interface;
} __packed;
struct nci_rf_disc_map_cmd {
__u8 num_mapping_configs;
struct disc_map_config mapping_configs
[NCI_MAX_NUM_MAPPING_CONFIGS];
} __packed;
#define NCI_OP_RF_DISCOVER_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
struct disc_config {
__u8 rf_tech_and_mode;
__u8 frequency;
} __packed;
struct nci_rf_disc_cmd {
__u8 num_disc_configs;
struct disc_config disc_configs[NCI_MAX_NUM_RF_CONFIGS];
} __packed;
#define NCI_OP_RF_DISCOVER_SELECT_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
struct nci_rf_discover_select_cmd {
__u8 rf_discovery_id;
__u8 rf_protocol;
__u8 rf_interface;
} __packed;
#define NCI_OP_RF_DEACTIVATE_CMD nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
struct nci_rf_deactivate_cmd {
__u8 type;
} __packed;
/* ----------------------- */
/* ---- NCI Responses ---- */
/* ----------------------- */
#define NCI_OP_CORE_RESET_RSP nci_opcode_pack(NCI_GID_CORE, 0x00)
struct nci_core_reset_rsp {
__u8 status;
__u8 nci_ver;
__u8 config_status;
} __packed;
#define NCI_OP_CORE_INIT_RSP nci_opcode_pack(NCI_GID_CORE, 0x01)
struct nci_core_init_rsp_1 {
__u8 status;
__le32 nfcc_features;
__u8 num_supported_rf_interfaces;
__u8 supported_rf_interfaces[0]; /* variable size array */
/* continuted in nci_core_init_rsp_2 */
} __packed;
struct nci_core_init_rsp_2 {
__u8 max_logical_connections;
__le16 max_routing_table_size;
__u8 max_ctrl_pkt_payload_len;
__le16 max_size_for_large_params;
__u8 manufact_id;
__le32 manufact_specific_info;
} __packed;
#define NCI_OP_RF_DISCOVER_MAP_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x00)
#define NCI_OP_RF_DISCOVER_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
#define NCI_OP_RF_DISCOVER_SELECT_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x04)
#define NCI_OP_RF_DEACTIVATE_RSP nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
/* --------------------------- */
/* ---- NCI Notifications ---- */
/* --------------------------- */
#define NCI_OP_CORE_CONN_CREDITS_NTF nci_opcode_pack(NCI_GID_CORE, 0x06)
struct conn_credit_entry {
__u8 conn_id;
__u8 credits;
} __packed;
struct nci_core_conn_credit_ntf {
__u8 num_entries;
struct conn_credit_entry conn_entries[NCI_MAX_NUM_CONN];
} __packed;
#define NCI_OP_CORE_GENERIC_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x07)
#define NCI_OP_CORE_INTF_ERROR_NTF nci_opcode_pack(NCI_GID_CORE, 0x08)
struct nci_core_intf_error_ntf {
__u8 status;
__u8 conn_id;
} __packed;
#define NCI_OP_RF_DISCOVER_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x03)
struct rf_tech_specific_params_nfca_poll {
__u16 sens_res;
__u8 nfcid1_len; /* 0, 4, 7, or 10 Bytes */
__u8 nfcid1[10];
__u8 sel_res_len; /* 0 or 1 Bytes */
__u8 sel_res;
} __packed;
struct rf_tech_specific_params_nfcb_poll {
__u8 sensb_res_len;
__u8 sensb_res[12]; /* 11 or 12 Bytes */
} __packed;
struct rf_tech_specific_params_nfcf_poll {
__u8 bit_rate;
__u8 sensf_res_len;
__u8 sensf_res[18]; /* 16 or 18 Bytes */
} __packed;
struct nci_rf_discover_ntf {
__u8 rf_discovery_id;
__u8 rf_protocol;
__u8 rf_tech_and_mode;
__u8 rf_tech_specific_params_len;
union {
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;
} rf_tech_specific_params;
__u8 ntf_type;
} __packed;
#define NCI_OP_RF_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
struct activation_params_nfca_poll_iso_dep {
__u8 rats_res_len;
__u8 rats_res[20];
};
struct activation_params_nfcb_poll_iso_dep {
__u8 attrib_res_len;
__u8 attrib_res[50];
};
struct nci_rf_intf_activated_ntf {
__u8 rf_discovery_id;
__u8 rf_interface;
__u8 rf_protocol;
__u8 activation_rf_tech_and_mode;
__u8 max_data_pkt_payload_size;
__u8 initial_num_credits;
__u8 rf_tech_specific_params_len;
union {
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;
} rf_tech_specific_params;
__u8 data_exch_rf_tech_and_mode;
__u8 data_exch_tx_bit_rate;
__u8 data_exch_rx_bit_rate;
__u8 activation_params_len;
union {
struct activation_params_nfca_poll_iso_dep nfca_poll_iso_dep;
struct activation_params_nfcb_poll_iso_dep nfcb_poll_iso_dep;
} activation_params;
} __packed;
#define NCI_OP_RF_DEACTIVATE_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x06)
struct nci_rf_deactivate_ntf {
__u8 type;
__u8 reason;
} __packed;
#endif /* __NCI_H */
kernel/include/net/nfc/nci_core.h
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/*
* 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 */
kernel/include/net/nfc/nfc.h
+188
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/*
* Copyright (C) 2011 Instituto Nokia de Tecnologia
*
* Authors:
* Lauro Ramos Venancio <lauro.venancio@openbossa.org>
* Aloisio Almeida Jr <aloisio.almeida@openbossa.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* 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 __NET_NFC_H
#define __NET_NFC_H
#include <linux/nfc.h>
#include <linux/device.h>
#include <linux/skbuff.h>
#define nfc_dev_info(dev, fmt, arg...) dev_info((dev), "NFC: " fmt "\n", ## arg)
#define nfc_dev_err(dev, fmt, arg...) dev_err((dev), "NFC: " fmt "\n", ## arg)
#define nfc_dev_dbg(dev, fmt, arg...) dev_dbg((dev), fmt "\n", ## arg)
struct nfc_dev;
/**
* data_exchange_cb_t - Definition of nfc_data_exchange callback
*
* @context: nfc_data_exchange cb_context parameter
* @skb: response data
* @err: If an error has occurred during data exchange, it is the
* error number. Zero means no error.
*
* When a rx or tx package is lost or corrupted or the target gets out
* of the operating field, err is -EIO.
*/
typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb,
int err);
struct nfc_ops {
int (*dev_up)(struct nfc_dev *dev);
int (*dev_down)(struct nfc_dev *dev);
int (*start_poll)(struct nfc_dev *dev, u32 protocols);
void (*stop_poll)(struct nfc_dev *dev);
int (*dep_link_up)(struct nfc_dev *dev, int target_idx, u8 comm_mode,
u8 *gb, size_t gb_len);
int (*dep_link_down)(struct nfc_dev *dev);
int (*activate_target)(struct nfc_dev *dev, u32 target_idx,
u32 protocol);
void (*deactivate_target)(struct nfc_dev *dev, u32 target_idx);
int (*data_exchange)(struct nfc_dev *dev, u32 target_idx,
struct sk_buff *skb, data_exchange_cb_t cb,
void *cb_context);
};
#define NFC_TARGET_IDX_ANY -1
#define NFC_MAX_GT_LEN 48
struct nfc_target {
u32 idx;
u32 supported_protocols;
u16 sens_res;
u8 sel_res;
u8 nfcid1_len;
u8 nfcid1[NFC_NFCID1_MAXSIZE];
u8 sensb_res_len;
u8 sensb_res[NFC_SENSB_RES_MAXSIZE];
u8 sensf_res_len;
u8 sensf_res[NFC_SENSF_RES_MAXSIZE];
};
struct nfc_genl_data {
u32 poll_req_pid;
struct mutex genl_data_mutex;
};
struct nfc_dev {
unsigned idx;
struct nfc_target *targets;
int n_targets;
int targets_generation;
spinlock_t targets_lock;
struct device dev;
bool dev_up;
bool polling;
bool remote_activated;
bool dep_link_up;
u32 dep_rf_mode;
struct nfc_genl_data genl_data;
u32 supported_protocols;
int tx_headroom;
int tx_tailroom;
struct nfc_ops *ops;
};
#define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
extern struct class nfc_class;
struct nfc_dev *nfc_allocate_device(struct nfc_ops *ops,
u32 supported_protocols,
int tx_headroom,
int tx_tailroom);
/**
* nfc_free_device - free nfc device
*
* @dev: The nfc device to free
*/
static inline void nfc_free_device(struct nfc_dev *dev)
{
put_device(&dev->dev);
}
int nfc_register_device(struct nfc_dev *dev);
void nfc_unregister_device(struct nfc_dev *dev);
/**
* nfc_set_parent_dev - set the parent device
*
* @nfc_dev: The nfc device whose parent is being set
* @dev: The parent device
*/
static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev,
struct device *dev)
{
nfc_dev->dev.parent = dev;
}
/**
* nfc_set_drvdata - set driver specifc data
*
* @dev: The nfc device
* @data: Pointer to driver specifc data
*/
static inline void nfc_set_drvdata(struct nfc_dev *dev, void *data)
{
dev_set_drvdata(&dev->dev, data);
}
/**
* nfc_get_drvdata - get driver specifc data
*
* @dev: The nfc device
*/
static inline void *nfc_get_drvdata(struct nfc_dev *dev)
{
return dev_get_drvdata(&dev->dev);
}
/**
* nfc_device_name - get the nfc device name
*
* @dev: The nfc device whose name to return
*/
static inline const char *nfc_device_name(struct nfc_dev *dev)
{
return dev_name(&dev->dev);
}
struct sk_buff *nfc_alloc_send_skb(struct nfc_dev *dev, struct sock *sk,
unsigned int flags, unsigned int size,
unsigned int *err);
struct sk_buff *nfc_alloc_recv_skb(unsigned int size, gfp_t gfp);
int nfc_set_remote_general_bytes(struct nfc_dev *dev,
u8 *gt, u8 gt_len);
int nfc_targets_found(struct nfc_dev *dev,
struct nfc_target *targets, int ntargets);
int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx,
u8 comm_mode, u8 rf_mode);
#endif /* __NET_NFC_H */