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-rw-r--r--include/net/nfc/hci.h196
-rw-r--r--include/net/nfc/nci.h53
-rw-r--r--include/net/nfc/nci_core.h36
-rw-r--r--include/net/nfc/nfc.h62
-rw-r--r--include/net/nfc/shdlc.h106
5 files changed, 417 insertions, 36 deletions
diff --git a/include/net/nfc/hci.h b/include/net/nfc/hci.h
new file mode 100644
index 00000000000..4467c946085
--- /dev/null
+++ b/include/net/nfc/hci.h
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2011 Intel Corporation. All rights reserved.
+ *
+ * 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_HCI_H
+#define __NET_HCI_H
+
+#include <linux/skbuff.h>
+
+#include <net/nfc/nfc.h>
+
+struct nfc_hci_dev;
+
+struct nfc_hci_ops {
+ int (*open) (struct nfc_hci_dev *hdev);
+ void (*close) (struct nfc_hci_dev *hdev);
+ int (*hci_ready) (struct nfc_hci_dev *hdev);
+ int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
+ int (*start_poll) (struct nfc_hci_dev *hdev, u32 protocols);
+ int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
+ struct nfc_target *target);
+ int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
+ struct nfc_target *target);
+ int (*data_exchange) (struct nfc_hci_dev *hdev,
+ struct nfc_target *target,
+ struct sk_buff *skb, struct sk_buff **res_skb);
+ int (*check_presence)(struct nfc_hci_dev *hdev,
+ struct nfc_target *target);
+};
+
+#define NFC_HCI_MAX_CUSTOM_GATES 15
+struct nfc_hci_init_data {
+ u8 gate_count;
+ u8 gates[NFC_HCI_MAX_CUSTOM_GATES];
+ char session_id[9];
+};
+
+typedef int (*xmit) (struct sk_buff *skb, void *cb_data);
+
+#define NFC_HCI_MAX_GATES 256
+
+struct nfc_hci_dev {
+ struct nfc_dev *ndev;
+
+ u32 max_data_link_payload;
+
+ struct mutex msg_tx_mutex;
+
+ struct list_head msg_tx_queue;
+
+ struct workqueue_struct *msg_tx_wq;
+ struct work_struct msg_tx_work;
+
+ struct timer_list cmd_timer;
+ struct hci_msg *cmd_pending_msg;
+
+ struct sk_buff_head rx_hcp_frags;
+
+ struct workqueue_struct *msg_rx_wq;
+ struct work_struct msg_rx_work;
+
+ struct sk_buff_head msg_rx_queue;
+
+ struct nfc_hci_ops *ops;
+
+ struct nfc_hci_init_data init_data;
+
+ void *clientdata;
+
+ u8 gate2pipe[NFC_HCI_MAX_GATES];
+
+ u8 sw_romlib;
+ u8 sw_patch;
+ u8 sw_flashlib_major;
+ u8 sw_flashlib_minor;
+
+ u8 hw_derivative;
+ u8 hw_version;
+ u8 hw_mpw;
+ u8 hw_software;
+ u8 hw_bsid;
+};
+
+/* hci device allocation */
+struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
+ struct nfc_hci_init_data *init_data,
+ u32 protocols,
+ int tx_headroom,
+ int tx_tailroom,
+ int max_link_payload);
+void nfc_hci_free_device(struct nfc_hci_dev *hdev);
+
+int nfc_hci_register_device(struct nfc_hci_dev *hdev);
+void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);
+
+void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
+void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
+
+/* Host IDs */
+#define NFC_HCI_HOST_CONTROLLER_ID 0x00
+#define NFC_HCI_TERMINAL_HOST_ID 0x01
+#define NFC_HCI_UICC_HOST_ID 0x02
+
+/* Host Controller Gates and registry indexes */
+#define NFC_HCI_ADMIN_GATE 0x00
+#define NFC_HCI_ADMIN_SESSION_IDENTITY 0x01
+#define NFC_HCI_ADMIN_MAX_PIPE 0x02
+#define NFC_HCI_ADMIN_WHITELIST 0x03
+#define NFC_HCI_ADMIN_HOST_LIST 0x04
+
+#define NFC_HCI_LOOPBACK_GATE 0x04
+
+#define NFC_HCI_ID_MGMT_GATE 0x05
+#define NFC_HCI_ID_MGMT_VERSION_SW 0x01
+#define NFC_HCI_ID_MGMT_VERSION_HW 0x03
+#define NFC_HCI_ID_MGMT_VENDOR_NAME 0x04
+#define NFC_HCI_ID_MGMT_MODEL_ID 0x05
+#define NFC_HCI_ID_MGMT_HCI_VERSION 0x02
+#define NFC_HCI_ID_MGMT_GATES_LIST 0x06
+
+#define NFC_HCI_LINK_MGMT_GATE 0x06
+#define NFC_HCI_LINK_MGMT_REC_ERROR 0x01
+
+#define NFC_HCI_RF_READER_B_GATE 0x11
+#define NFC_HCI_RF_READER_B_PUPI 0x03
+#define NFC_HCI_RF_READER_B_APPLICATION_DATA 0x04
+#define NFC_HCI_RF_READER_B_AFI 0x02
+#define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE 0x01
+#define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA 0x05
+
+#define NFC_HCI_RF_READER_A_GATE 0x13
+#define NFC_HCI_RF_READER_A_UID 0x02
+#define NFC_HCI_RF_READER_A_ATQA 0x04
+#define NFC_HCI_RF_READER_A_APPLICATION_DATA 0x05
+#define NFC_HCI_RF_READER_A_SAK 0x03
+#define NFC_HCI_RF_READER_A_FWI_SFGT 0x06
+#define NFC_HCI_RF_READER_A_DATARATE_MAX 0x01
+
+#define NFC_HCI_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
+#define NFC_HCI_TYPE_A_SEL_PROT_MIFARE 0
+#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443 1
+#define NFC_HCI_TYPE_A_SEL_PROT_DEP 2
+#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP 3
+
+/* Generic events */
+#define NFC_HCI_EVT_HCI_END_OF_OPERATION 0x01
+#define NFC_HCI_EVT_POST_DATA 0x02
+#define NFC_HCI_EVT_HOT_PLUG 0x03
+
+/* Reader RF gates events */
+#define NFC_HCI_EVT_READER_REQUESTED 0x10
+#define NFC_HCI_EVT_END_OPERATION 0x11
+
+/* Reader Application gate events */
+#define NFC_HCI_EVT_TARGET_DISCOVERED 0x10
+
+/* receiving messages from lower layer */
+void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
+ struct sk_buff *skb);
+void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
+ struct sk_buff *skb);
+void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
+ struct sk_buff *skb);
+void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb);
+
+/* connecting to gates and sending hci instructions */
+int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate);
+int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate);
+int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev);
+int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
+ struct sk_buff **skb);
+int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
+ const u8 *param, size_t param_len);
+int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
+ const u8 *param, size_t param_len, struct sk_buff **skb);
+int nfc_hci_send_response(struct nfc_hci_dev *hdev, u8 gate, u8 response,
+ const u8 *param, size_t param_len);
+int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
+ const u8 *param, size_t param_len);
+
+#endif /* __NET_HCI_H */
diff --git a/include/net/nfc/nci.h b/include/net/nfc/nci.h
index 2be95e2626c..276094b91d7 100644
--- a/include/net/nfc/nci.h
+++ b/include/net/nfc/nci.h
@@ -116,6 +116,11 @@
#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
@@ -207,6 +212,13 @@ struct nci_rf_disc_cmd {
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;
@@ -244,6 +256,8 @@ struct nci_core_init_rsp_2 {
#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)
/* --------------------------- */
@@ -260,13 +274,15 @@ struct nci_core_conn_credit_ntf {
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_INTF_ACTIVATED_NTF nci_opcode_pack(NCI_GID_RF_MGMT, 0x05)
+#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 */
@@ -275,11 +291,43 @@ struct rf_tech_specific_params_nfca_poll {
__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;
@@ -291,6 +339,8 @@ struct nci_rf_intf_activated_ntf {
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;
@@ -300,6 +350,7 @@ struct nci_rf_intf_activated_ntf {
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;
diff --git a/include/net/nfc/nci_core.h b/include/net/nfc/nci_core.h
index bccd89e9d4c..feba74027ff 100644
--- a/include/net/nfc/nci_core.h
+++ b/include/net/nfc/nci_core.h
@@ -34,21 +34,31 @@
#include <net/nfc/nfc.h>
#include <net/nfc/nci.h>
-/* NCI device state */
-enum {
+/* 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_DATA_EXCHANGE,
};
/* NCI timeouts */
#define NCI_RESET_TIMEOUT 5000
#define NCI_INIT_TIMEOUT 5000
#define NCI_RF_DISC_TIMEOUT 5000
-#define NCI_RF_DEACTIVATE_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;
@@ -59,6 +69,7 @@ struct nci_ops {
};
#define NCI_MAX_SUPPORTED_RF_INTERFACES 4
+#define NCI_MAX_DISCOVERED_TARGETS 10
/* NCI Core structures */
struct nci_dev {
@@ -68,12 +79,14 @@ struct nci_dev {
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;
@@ -96,9 +109,11 @@ struct nci_dev {
void *driver_data;
__u32 poll_prots;
- __u32 target_available_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;
@@ -126,17 +141,17 @@ struct nci_dev {
/* ----- NCI Devices ----- */
struct nci_dev *nci_allocate_device(struct nci_ops *ops,
- __u32 supported_protocols,
- int tx_headroom,
- int tx_tailroom);
+ __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)
+ unsigned int len,
+ gfp_t how)
{
struct sk_buff *skb;
@@ -169,6 +184,7 @@ 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
diff --git a/include/net/nfc/nfc.h b/include/net/nfc/nfc.h
index 8696b773a69..b7ca4a2a1d7 100644
--- a/include/net/nfc/nfc.h
+++ b/include/net/nfc/nfc.h
@@ -24,6 +24,7 @@
#ifndef __NET_NFC_H
#define __NET_NFC_H
+#include <linux/nfc.h>
#include <linux/device.h>
#include <linux/skbuff.h>
@@ -47,25 +48,28 @@ struct nfc_dev;
typedef void (*data_exchange_cb_t)(void *context, struct sk_buff *skb,
int err);
+struct nfc_target;
+
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 rf_mode);
+ int (*dep_link_up)(struct nfc_dev *dev, struct nfc_target *target,
+ 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);
+ int (*activate_target)(struct nfc_dev *dev, struct nfc_target *target,
+ u32 protocol);
+ void (*deactivate_target)(struct nfc_dev *dev,
+ struct nfc_target *target);
+ int (*data_exchange)(struct nfc_dev *dev, struct nfc_target *target,
+ struct sk_buff *skb, data_exchange_cb_t cb,
+ void *cb_context);
+ int (*check_presence)(struct nfc_dev *dev, struct nfc_target *target);
};
#define NFC_TARGET_IDX_ANY -1
#define NFC_MAX_GT_LEN 48
-#define NFC_MAX_NFCID1_LEN 10
struct nfc_target {
u32 idx;
@@ -73,7 +77,13 @@ struct nfc_target {
u16 sens_res;
u8 sel_res;
u8 nfcid1_len;
- u8 nfcid1[NFC_MAX_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];
+ u8 hci_reader_gate;
+ u8 logical_idx;
};
struct nfc_genl_data {
@@ -82,16 +92,15 @@ struct nfc_genl_data {
};
struct nfc_dev {
- unsigned idx;
- unsigned target_idx;
+ unsigned int idx;
+ u32 target_next_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;
+ struct nfc_target *active_target;
bool dep_link_up;
u32 dep_rf_mode;
struct nfc_genl_data genl_data;
@@ -100,6 +109,10 @@ struct nfc_dev {
int tx_headroom;
int tx_tailroom;
+ struct timer_list check_pres_timer;
+ struct workqueue_struct *check_pres_wq;
+ struct work_struct check_pres_work;
+
struct nfc_ops *ops;
};
#define to_nfc_dev(_dev) container_of(_dev, struct nfc_dev, dev)
@@ -107,9 +120,9 @@ struct nfc_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);
+ u32 supported_protocols,
+ int tx_headroom,
+ int tx_tailroom);
/**
* nfc_free_device - free nfc device
@@ -132,7 +145,7 @@ void nfc_unregister_device(struct nfc_dev *dev);
* @dev: The parent device
*/
static inline void nfc_set_parent_dev(struct nfc_dev *nfc_dev,
- struct device *dev)
+ struct device *dev)
{
nfc_dev->dev.parent = dev;
}
@@ -169,17 +182,16 @@ static inline const char *nfc_device_name(struct nfc_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);
+ 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);
-
-u8 *nfc_get_local_general_bytes(struct nfc_dev *dev, u8 *gt_len);
+ u8 *gt, u8 gt_len);
-int nfc_targets_found(struct nfc_dev *dev, struct nfc_target *targets,
- int ntargets);
+int nfc_targets_found(struct nfc_dev *dev,
+ struct nfc_target *targets, int ntargets);
+int nfc_target_lost(struct nfc_dev *dev, u32 target_idx);
int nfc_dep_link_is_up(struct nfc_dev *dev, u32 target_idx,
u8 comm_mode, u8 rf_mode);
diff --git a/include/net/nfc/shdlc.h b/include/net/nfc/shdlc.h
new file mode 100644
index 00000000000..ab06afd462d
--- /dev/null
+++ b/include/net/nfc/shdlc.h
@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2012 Intel Corporation. All rights reserved.
+ *
+ * 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 __NFC_SHDLC_H
+#define __NFC_SHDLC_H
+
+struct nfc_shdlc;
+
+struct nfc_shdlc_ops {
+ int (*open) (struct nfc_shdlc *shdlc);
+ void (*close) (struct nfc_shdlc *shdlc);
+ int (*hci_ready) (struct nfc_shdlc *shdlc);
+ int (*xmit) (struct nfc_shdlc *shdlc, struct sk_buff *skb);
+ int (*start_poll) (struct nfc_shdlc *shdlc, u32 protocols);
+ int (*target_from_gate) (struct nfc_shdlc *shdlc, u8 gate,
+ struct nfc_target *target);
+ int (*complete_target_discovered) (struct nfc_shdlc *shdlc, u8 gate,
+ struct nfc_target *target);
+ int (*data_exchange) (struct nfc_shdlc *shdlc,
+ struct nfc_target *target,
+ struct sk_buff *skb, struct sk_buff **res_skb);
+ int (*check_presence)(struct nfc_shdlc *shdlc,
+ struct nfc_target *target);
+};
+
+enum shdlc_state {
+ SHDLC_DISCONNECTED = 0,
+ SHDLC_CONNECTING = 1,
+ SHDLC_NEGOCIATING = 2,
+ SHDLC_CONNECTED = 3
+};
+
+struct nfc_shdlc {
+ struct mutex state_mutex;
+ enum shdlc_state state;
+ int hard_fault;
+
+ struct nfc_hci_dev *hdev;
+
+ wait_queue_head_t *connect_wq;
+ int connect_tries;
+ int connect_result;
+ struct timer_list connect_timer;/* aka T3 in spec 10.6.1 */
+
+ u8 w; /* window size */
+ bool srej_support;
+
+ struct timer_list t1_timer; /* send ack timeout */
+ bool t1_active;
+
+ struct timer_list t2_timer; /* guard/retransmit timeout */
+ bool t2_active;
+
+ int ns; /* next seq num for send */
+ int nr; /* next expected seq num for receive */
+ int dnr; /* oldest sent unacked seq num */
+
+ struct sk_buff_head rcv_q;
+
+ struct sk_buff_head send_q;
+ bool rnr; /* other side is not ready to receive */
+
+ struct sk_buff_head ack_pending_q;
+
+ struct workqueue_struct *sm_wq;
+ struct work_struct sm_work;
+
+ struct nfc_shdlc_ops *ops;
+
+ int client_headroom;
+ int client_tailroom;
+
+ void *clientdata;
+};
+
+void nfc_shdlc_recv_frame(struct nfc_shdlc *shdlc, struct sk_buff *skb);
+
+struct nfc_shdlc *nfc_shdlc_allocate(struct nfc_shdlc_ops *ops,
+ struct nfc_hci_init_data *init_data,
+ u32 protocols,
+ int tx_headroom, int tx_tailroom,
+ int max_link_payload, const char *devname);
+
+void nfc_shdlc_free(struct nfc_shdlc *shdlc);
+
+void nfc_shdlc_set_clientdata(struct nfc_shdlc *shdlc, void *clientdata);
+void *nfc_shdlc_get_clientdata(struct nfc_shdlc *shdlc);
+struct nfc_hci_dev *nfc_shdlc_get_hci_dev(struct nfc_shdlc *shdlc);
+
+#endif /* __NFC_SHDLC_H */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-09-30 15:37:11 +0000