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All rights reserved. * Copyright (C) 2014 Marvell International Ltd. * * Written by Ilan Elias * * Acknowledgements: * This file is based on hci_core.h, which was written * by Maxim Krasnyansky. */ #ifndef __NCI_CORE_H #define __NCI_CORE_H #include #include #include #include #include /* NCI device flags */ enum nci_flag { NCI_INIT, NCI_UP, NCI_DATA_EXCHANGE, NCI_DATA_EXCHANGE_TO, NCI_UNREG, }; /* NCI device states */ enum nci_state { NCI_IDLE, NCI_DISCOVERY, NCI_W4_ALL_DISCOVERIES, NCI_W4_HOST_SELECT, NCI_POLL_ACTIVE, NCI_LISTEN_ACTIVE, NCI_LISTEN_SLEEP, }; /* NCI timeouts */ #define NCI_RESET_TIMEOUT 5000 #define NCI_INIT_TIMEOUT 5000 #define NCI_SET_CONFIG_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_driver_ops { __u16 opcode; int (*rsp)(struct nci_dev *dev, struct sk_buff *skb); int (*ntf)(struct nci_dev *dev, struct sk_buff *skb); }; struct nci_ops { int (*init)(struct nci_dev *ndev); int (*open)(struct nci_dev *ndev); int (*close)(struct nci_dev *ndev); int (*send)(struct nci_dev *ndev, struct sk_buff *skb); int (*setup)(struct nci_dev *ndev); int (*post_setup)(struct nci_dev *ndev); int (*fw_download)(struct nci_dev *ndev, const char *firmware_name); __u32 (*get_rfprotocol)(struct nci_dev *ndev, __u8 rf_protocol); int (*discover_se)(struct nci_dev *ndev); int (*disable_se)(struct nci_dev *ndev, u32 se_idx); int (*enable_se)(struct nci_dev *ndev, u32 se_idx); int (*se_io)(struct nci_dev *ndev, u32 se_idx, u8 *apdu, size_t apdu_length, se_io_cb_t cb, void *cb_context); int (*hci_load_session)(struct nci_dev *ndev); void (*hci_event_received)(struct nci_dev *ndev, u8 pipe, u8 event, struct sk_buff *skb); void (*hci_cmd_received)(struct nci_dev *ndev, u8 pipe, u8 cmd, struct sk_buff *skb); struct nci_driver_ops *prop_ops; size_t n_prop_ops; struct nci_driver_ops *core_ops; size_t n_core_ops; }; #define NCI_MAX_SUPPORTED_RF_INTERFACES 4 #define NCI_MAX_DISCOVERED_TARGETS 10 #define NCI_MAX_NUM_NFCEE 255 #define NCI_MAX_CONN_ID 7 #define NCI_MAX_PROPRIETARY_CMD 64 struct nci_conn_info { struct list_head list; /* NCI specification 4.4.2 Connection Creation * The combination of destination type and destination specific * parameters shall uniquely identify a single destination for the * Logical Connection */ struct dest_spec_params *dest_params; __u8 dest_type; __u8 conn_id; __u8 max_pkt_payload_len; atomic_t credits_cnt; __u8 initial_num_credits; data_exchange_cb_t data_exchange_cb; void *data_exchange_cb_context; struct sk_buff *rx_skb; }; #define NCI_INVALID_CONN_ID 0x80 #define NCI_HCI_ANY_OPEN_PIPE 0x03 /* Gates */ #define NCI_HCI_ADMIN_GATE 0x00 #define NCI_HCI_LOOPBACK_GATE 0x04 #define NCI_HCI_IDENTITY_MGMT_GATE 0x05 #define NCI_HCI_LINK_MGMT_GATE 0x06 /* Pipes */ #define NCI_HCI_LINK_MGMT_PIPE 0x00 #define NCI_HCI_ADMIN_PIPE 0x01 /* Generic responses */ #define NCI_HCI_ANY_OK 0x00 #define NCI_HCI_ANY_E_NOT_CONNECTED 0x01 #define NCI_HCI_ANY_E_CMD_PAR_UNKNOWN 0x02 #define NCI_HCI_ANY_E_NOK 0x03 #define NCI_HCI_ANY_E_PIPES_FULL 0x04 #define NCI_HCI_ANY_E_REG_PAR_UNKNOWN 0x05 #define NCI_HCI_ANY_E_PIPE_NOT_OPENED 0x06 #define NCI_HCI_ANY_E_CMD_NOT_SUPPORTED 0x07 #define NCI_HCI_ANY_E_INHIBITED 0x08 #define NCI_HCI_ANY_E_TIMEOUT 0x09 #define NCI_HCI_ANY_E_REG_ACCESS_DENIED 0x0a #define NCI_HCI_ANY_E_PIPE_ACCESS_DENIED 0x0b #define NCI_HCI_DO_NOT_OPEN_PIPE 0x81 #define NCI_HCI_INVALID_PIPE 0x80 #define NCI_HCI_INVALID_GATE 0xFF #define NCI_HCI_INVALID_HOST 0x80 #define NCI_HCI_MAX_CUSTOM_GATES 50 /* * According to specification 102 622 chapter 4.4 Pipes, * the pipe identifier is 7 bits long. */ #define NCI_HCI_MAX_PIPES 128 struct nci_hci_gate { u8 gate; u8 pipe; u8 dest_host; } __packed; struct nci_hci_pipe { u8 gate; u8 host; } __packed; struct nci_hci_init_data { u8 gate_count; struct nci_hci_gate gates[NCI_HCI_MAX_CUSTOM_GATES]; char session_id[9]; }; #define NCI_HCI_MAX_GATES 256 struct nci_hci_dev { u8 nfcee_id; struct nci_dev *ndev; struct nci_conn_info *conn_info; struct nci_hci_init_data init_data; struct nci_hci_pipe pipes[NCI_HCI_MAX_PIPES]; u8 gate2pipe[NCI_HCI_MAX_GATES]; int expected_pipes; int count_pipes; struct sk_buff_head rx_hcp_frags; struct work_struct msg_rx_work; struct sk_buff_head msg_rx_queue; }; /* NCI Core structures */ struct nci_dev { struct nfc_dev *nfc_dev; struct nci_ops *ops; struct nci_hci_dev *hci_dev; int tx_headroom; int tx_tailroom; atomic_t state; unsigned long flags; atomic_t cmd_cnt; __u8 cur_conn_id; struct list_head conn_info_list; struct nci_conn_info *rf_conn_info; 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; /* Save RF Discovery ID or NFCEE ID under conn_create */ struct dest_spec_params cur_params; /* Save destination type under conn_create */ __u8 cur_dest_type; /* stored during nci_data_exchange */ struct sk_buff *rx_data_reassembly; /* stored during intf_activated_ntf */ __u8 remote_gb[NFC_MAX_GT_LEN]; __u8 remote_gb_len; }; /* ----- 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_request(struct nci_dev *ndev, void (*req)(struct nci_dev *ndev, unsigned long opt), unsigned long opt, __u32 timeout); int nci_prop_cmd(struct nci_dev *ndev, __u8 oid, size_t len, __u8 *payload); int nci_core_cmd(struct nci_dev *ndev, __u16 opcode, size_t len, __u8 *payload); int nci_core_reset(struct nci_dev *ndev); int nci_core_init(struct nci_dev *ndev); int nci_recv_frame(struct nci_dev *ndev, struct sk_buff *skb); int nci_send_frame(struct nci_dev *ndev, struct sk_buff *skb); int nci_set_config(struct nci_dev *ndev, __u8 id, size_t len, __u8 *val); int nci_nfcee_discover(struct nci_dev *ndev, u8 action); int nci_nfcee_mode_set(struct nci_dev *ndev, u8 nfcee_id, u8 nfcee_mode); int nci_core_conn_create(struct nci_dev *ndev, u8 destination_type, u8 number_destination_params, size_t params_len, struct core_conn_create_dest_spec_params *params); int nci_core_conn_close(struct nci_dev *ndev, u8 conn_id); int nci_nfcc_loopback(struct nci_dev *ndev, void *data, size_t data_len, struct sk_buff **resp); struct nci_hci_dev *nci_hci_allocate(struct nci_dev *ndev); void nci_hci_deallocate(struct nci_dev *ndev); int nci_hci_send_event(struct nci_dev *ndev, u8 gate, u8 event, const u8 *param, size_t param_len); int nci_hci_send_cmd(struct nci_dev *ndev, u8 gate, u8 cmd, const u8 *param, size_t param_len, struct sk_buff **skb); int nci_hci_open_pipe(struct nci_dev *ndev, u8 pipe); int nci_hci_connect_gate(struct nci_dev *ndev, u8 dest_host, u8 dest_gate, u8 pipe); int nci_hci_set_param(struct nci_dev *ndev, u8 gate, u8 idx, const u8 *param, size_t param_len); int nci_hci_get_param(struct nci_dev *ndev, u8 gate, u8 idx, struct sk_buff **skb); int nci_hci_clear_all_pipes(struct nci_dev *ndev); int nci_hci_dev_session_init(struct nci_dev *ndev); 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; } static inline int nci_set_vendor_cmds(struct nci_dev *ndev, struct nfc_vendor_cmd *cmds, int n_cmds) { return nfc_set_vendor_cmds(ndev->nfc_dev, cmds, n_cmds); } void nci_rsp_packet(struct nci_dev *ndev, struct sk_buff *skb); void nci_ntf_packet(struct nci_dev *ndev, struct sk_buff *skb); int nci_prop_rsp_packet(struct nci_dev *ndev, __u16 opcode, struct sk_buff *skb); int nci_prop_ntf_packet(struct nci_dev *ndev, __u16 opcode, struct sk_buff *skb); int nci_core_rsp_packet(struct nci_dev *ndev, __u16 opcode, struct sk_buff *skb); int nci_core_ntf_packet(struct nci_dev *ndev, __u16 opcode, 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); int nci_conn_max_data_pkt_payload_size(struct nci_dev *ndev, __u8 conn_id); void nci_data_exchange_complete(struct nci_dev *ndev, struct sk_buff *skb, __u8 conn_id, int err); void nci_hci_data_received_cb(void *context, 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); struct nci_conn_info *nci_get_conn_info_by_conn_id(struct nci_dev *ndev, int conn_id); int nci_get_conn_info_by_dest_type_params(struct nci_dev *ndev, u8 dest_type, struct dest_spec_params *params); /* ----- NCI status code ----- */ int nci_to_errno(__u8 code); /* ----- NCI over SPI acknowledge modes ----- */ #define NCI_SPI_CRC_DISABLED 0x00 #define NCI_SPI_CRC_ENABLED 0x01 /* ----- NCI SPI structures ----- */ struct nci_spi { struct nci_dev *ndev; struct spi_device *spi; unsigned int xfer_udelay; /* microseconds delay between transactions */ unsigned int xfer_speed_hz; /* * SPI clock frequency * 0 => default clock */ u8 acknowledge_mode; struct completion req_completion; u8 req_result; }; /* ----- NCI SPI ----- */ struct nci_spi *nci_spi_allocate_spi(struct spi_device *spi, u8 acknowledge_mode, unsigned int delay, struct nci_dev *ndev); int nci_spi_send(struct nci_spi *nspi, struct completion *write_handshake_completion, struct sk_buff *skb); struct sk_buff *nci_spi_read(struct nci_spi *nspi); /* ----- NCI UART ---- */ /* Ioctl */ #define NCIUARTSETDRIVER _IOW('U', 0, char *) enum nci_uart_driver { NCI_UART_DRIVER_MARVELL = 0, NCI_UART_DRIVER_MAX }; struct nci_uart; struct nci_uart_ops { int (*open)(struct nci_uart *nci_uart); void (*close)(struct nci_uart *nci_uart); int (*recv)(struct nci_uart *nci_uart, struct sk_buff *skb); int (*recv_buf)(struct nci_uart *nci_uart, const u8 *data, char *flags, int count); int (*send)(struct nci_uart *nci_uart, struct sk_buff *skb); void (*tx_start)(struct nci_uart *nci_uart); void (*tx_done)(struct nci_uart *nci_uart); }; struct nci_uart { struct module *owner; struct nci_uart_ops ops; const char *name; enum nci_uart_driver driver; /* Dynamic data */ struct nci_dev *ndev; spinlock_t rx_lock; struct work_struct write_work; struct tty_struct *tty; unsigned long tx_state; struct sk_buff_head tx_q; struct sk_buff *tx_skb; struct sk_buff *rx_skb; int rx_packet_len; void *drv_data; }; int nci_uart_register(struct nci_uart *nu); void nci_uart_unregister(struct nci_uart *nu); void nci_uart_set_config(struct nci_uart *nu, int baudrate, int flow_ctrl); #endif /* __NCI_CORE_H */