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This is an implementation of ETSI TS 102 622 specification. Many NFC chipsets use HCI as the host <-> target protocol on top of a serial link like i2c. Signed-off-by: Eric Lapuyade <eric.lapuyade@intel.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
199 lines
6.1 KiB
C
199 lines
6.1 KiB
C
/*
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* Copyright (C) 2011 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifndef __NET_HCI_H
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#define __NET_HCI_H
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#include <linux/skbuff.h>
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#include <net/nfc/nfc.h>
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struct nfc_hci_dev;
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struct nfc_hci_ops {
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int (*open) (struct nfc_hci_dev *hdev);
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void (*close) (struct nfc_hci_dev *hdev);
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int (*hci_ready) (struct nfc_hci_dev *hdev);
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int (*xmit) (struct nfc_hci_dev *hdev, struct sk_buff *skb);
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int (*start_poll) (struct nfc_hci_dev *hdev, u32 protocols);
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int (*target_from_gate) (struct nfc_hci_dev *hdev, u8 gate,
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struct nfc_target *target);
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int (*complete_target_discovered) (struct nfc_hci_dev *hdev, u8 gate,
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struct nfc_target *target);
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int (*data_exchange) (struct nfc_hci_dev *hdev,
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struct nfc_target *target,
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struct sk_buff *skb, struct sk_buff **res_skb);
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};
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#define NFC_HCI_MAX_CUSTOM_GATES 15
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struct nfc_hci_init_data {
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u8 gate_count;
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u8 gates[NFC_HCI_MAX_CUSTOM_GATES];
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char session_id[9];
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};
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typedef int (*xmit) (struct sk_buff *skb, void *cb_data);
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#define NFC_HCI_MAX_GATES 256
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struct nfc_hci_dev {
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struct nfc_dev *ndev;
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u32 max_data_link_payload;
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struct mutex msg_tx_mutex;
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struct list_head msg_tx_queue;
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struct workqueue_struct *msg_tx_wq;
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struct work_struct msg_tx_work;
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struct timer_list cmd_timer;
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struct hci_msg *cmd_pending_msg;
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struct sk_buff_head rx_hcp_frags;
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struct workqueue_struct *msg_rx_wq;
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struct work_struct msg_rx_work;
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struct sk_buff_head msg_rx_queue;
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struct nfc_hci_ops *ops;
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struct nfc_hci_init_data init_data;
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void *clientdata;
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u8 gate2pipe[NFC_HCI_MAX_GATES];
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bool poll_started;
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struct nfc_target *targets;
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int target_count;
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u8 sw_romlib;
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u8 sw_patch;
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u8 sw_flashlib_major;
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u8 sw_flashlib_minor;
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u8 hw_derivative;
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u8 hw_version;
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u8 hw_mpw;
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u8 hw_software;
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u8 hw_bsid;
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};
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/* hci device allocation */
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struct nfc_hci_dev *nfc_hci_allocate_device(struct nfc_hci_ops *ops,
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struct nfc_hci_init_data *init_data,
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u32 protocols,
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int tx_headroom,
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int tx_tailroom,
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int max_link_payload);
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void nfc_hci_free_device(struct nfc_hci_dev *hdev);
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int nfc_hci_register_device(struct nfc_hci_dev *hdev);
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void nfc_hci_unregister_device(struct nfc_hci_dev *hdev);
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void nfc_hci_set_clientdata(struct nfc_hci_dev *hdev, void *clientdata);
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void *nfc_hci_get_clientdata(struct nfc_hci_dev *hdev);
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/* Host IDs */
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#define NFC_HCI_HOST_CONTROLLER_ID 0x00
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#define NFC_HCI_TERMINAL_HOST_ID 0x01
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#define NFC_HCI_UICC_HOST_ID 0x02
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/* Host Controller Gates and registry indexes */
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#define NFC_HCI_ADMIN_GATE 0x00
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#define NFC_HCI_ADMIN_SESSION_IDENTITY 0x01
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#define NFC_HCI_ADMIN_MAX_PIPE 0x02
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#define NFC_HCI_ADMIN_WHITELIST 0x03
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#define NFC_HCI_ADMIN_HOST_LIST 0x04
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#define NFC_HCI_LOOPBACK_GATE 0x04
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#define NFC_HCI_ID_MGMT_GATE 0x05
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#define NFC_HCI_ID_MGMT_VERSION_SW 0x01
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#define NFC_HCI_ID_MGMT_VERSION_HW 0x03
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#define NFC_HCI_ID_MGMT_VENDOR_NAME 0x04
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#define NFC_HCI_ID_MGMT_MODEL_ID 0x05
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#define NFC_HCI_ID_MGMT_HCI_VERSION 0x02
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#define NFC_HCI_ID_MGMT_GATES_LIST 0x06
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#define NFC_HCI_LINK_MGMT_GATE 0x06
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#define NFC_HCI_LINK_MGMT_REC_ERROR 0x01
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#define NFC_HCI_RF_READER_B_GATE 0x11
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#define NFC_HCI_RF_READER_B_PUPI 0x03
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#define NFC_HCI_RF_READER_B_APPLICATION_DATA 0x04
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#define NFC_HCI_RF_READER_B_AFI 0x02
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#define NFC_HCI_RF_READER_B_HIGHER_LAYER_RESPONSE 0x01
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#define NFC_HCI_RF_READER_B_HIGHER_LAYER_DATA 0x05
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#define NFC_HCI_RF_READER_A_GATE 0x13
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#define NFC_HCI_RF_READER_A_UID 0x02
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#define NFC_HCI_RF_READER_A_ATQA 0x04
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#define NFC_HCI_RF_READER_A_APPLICATION_DATA 0x05
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#define NFC_HCI_RF_READER_A_SAK 0x03
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#define NFC_HCI_RF_READER_A_FWI_SFGT 0x06
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#define NFC_HCI_RF_READER_A_DATARATE_MAX 0x01
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#define NFC_HCI_TYPE_A_SEL_PROT(x) (((x) & 0x60) >> 5)
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#define NFC_HCI_TYPE_A_SEL_PROT_MIFARE 0
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#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443 1
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#define NFC_HCI_TYPE_A_SEL_PROT_DEP 2
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#define NFC_HCI_TYPE_A_SEL_PROT_ISO14443_DEP 3
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/* Generic events */
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#define NFC_HCI_EVT_HCI_END_OF_OPERATION 0x01
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#define NFC_HCI_EVT_POST_DATA 0x02
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#define NFC_HCI_EVT_HOT_PLUG 0x03
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/* Reader RF gates events */
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#define NFC_HCI_EVT_READER_REQUESTED 0x10
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#define NFC_HCI_EVT_END_OPERATION 0x11
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/* Reader Application gate events */
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#define NFC_HCI_EVT_TARGET_DISCOVERED 0x10
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/* receiving messages from lower layer */
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void nfc_hci_resp_received(struct nfc_hci_dev *hdev, u8 result,
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struct sk_buff *skb);
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void nfc_hci_cmd_received(struct nfc_hci_dev *hdev, u8 pipe, u8 cmd,
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struct sk_buff *skb);
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void nfc_hci_event_received(struct nfc_hci_dev *hdev, u8 pipe, u8 event,
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struct sk_buff *skb);
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void nfc_hci_recv_frame(struct nfc_hci_dev *hdev, struct sk_buff *skb);
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/* connecting to gates and sending hci instructions */
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int nfc_hci_connect_gate(struct nfc_hci_dev *hdev, u8 dest_host, u8 dest_gate);
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int nfc_hci_disconnect_gate(struct nfc_hci_dev *hdev, u8 gate);
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int nfc_hci_disconnect_all_gates(struct nfc_hci_dev *hdev);
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int nfc_hci_get_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
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struct sk_buff **skb);
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int nfc_hci_set_param(struct nfc_hci_dev *hdev, u8 gate, u8 idx,
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const u8 *param, size_t param_len);
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int nfc_hci_send_cmd(struct nfc_hci_dev *hdev, u8 gate, u8 cmd,
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const u8 *param, size_t param_len, struct sk_buff **skb);
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int nfc_hci_send_response(struct nfc_hci_dev *hdev, u8 gate, u8 response,
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const u8 *param, size_t param_len);
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int nfc_hci_send_event(struct nfc_hci_dev *hdev, u8 gate, u8 event,
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const u8 *param, size_t param_len);
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#endif /* __NET_HCI_H */
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