/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2012  Intel Corporation. All rights reserved.
 */

#ifndef __LOCAL_HCI_H
#define __LOCAL_HCI_H

#include <net/nfc/hci.h>

struct gate_pipe_map {
        u8 gate;
        u8 pipe;
};

struct hcp_message {
        u8 header;              /* type -cmd,evt,rsp- + instruction */
        u8 data[];
} __packed;

struct hcp_packet {
        u8 header;              /* cbit+pipe */
        struct hcp_message message;
} __packed;

struct hcp_exec_waiter {
        wait_queue_head_t *wq;
        bool exec_complete;
        int exec_result;
        struct sk_buff *result_skb;
};

struct hci_msg {
        struct list_head msg_l;
        struct sk_buff_head msg_frags;
        bool wait_response;
        data_exchange_cb_t cb;
        void *cb_context;
        unsigned long completion_delay;
};

struct hci_create_pipe_params {
        u8 src_gate;
        u8 dest_host;
        u8 dest_gate;
} __packed;

struct hci_create_pipe_resp {
        u8 src_host;
        u8 src_gate;
        u8 dest_host;
        u8 dest_gate;
        u8 pipe;
} __packed;

struct hci_delete_pipe_noti {
        u8 pipe;
} __packed;

struct hci_all_pipe_cleared_noti {
        u8 host;
} __packed;

#define NFC_HCI_FRAGMENT        0x7f

#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
#define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
#define HCP_MSG_GET_CMD(header) (header & 0x3f)

int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
                           u8 type, u8 instruction,
                           const u8 *payload, size_t payload_len,
                           data_exchange_cb_t cb, void *cb_context,
                           unsigned long completion_delay);

void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
                            u8 instruction, struct sk_buff *skb);

/* HCP headers */
#define NFC_HCI_HCP_PACKET_HEADER_LEN   1
#define NFC_HCI_HCP_MESSAGE_HEADER_LEN  1
#define NFC_HCI_HCP_HEADER_LEN          2

/* HCP types */
#define NFC_HCI_HCP_COMMAND     0x00
#define NFC_HCI_HCP_EVENT       0x01
#define NFC_HCI_HCP_RESPONSE    0x02

/* Generic commands */
#define NFC_HCI_ANY_SET_PARAMETER       0x01
#define NFC_HCI_ANY_GET_PARAMETER       0x02
#define NFC_HCI_ANY_OPEN_PIPE           0x03
#define NFC_HCI_ANY_CLOSE_PIPE          0x04

/* Reader RF commands */
#define NFC_HCI_WR_XCHG_DATA            0x10

/* Admin commands */
#define NFC_HCI_ADM_CREATE_PIPE                 0x10
#define NFC_HCI_ADM_DELETE_PIPE                 0x11
#define NFC_HCI_ADM_NOTIFY_PIPE_CREATED         0x12
#define NFC_HCI_ADM_NOTIFY_PIPE_DELETED         0x13
#define NFC_HCI_ADM_CLEAR_ALL_PIPE              0x14
#define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED     0x15

/* Generic responses */
#define NFC_HCI_ANY_OK                          0x00
#define NFC_HCI_ANY_E_NOT_CONNECTED             0x01
#define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN           0x02
#define NFC_HCI_ANY_E_NOK                       0x03
#define NFC_HCI_ANY_E_PIPES_FULL                0x04
#define NFC_HCI_ANY_E_REG_PAR_UNKNOWN           0x05
#define NFC_HCI_ANY_E_PIPE_NOT_OPENED           0x06
#define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED         0x07
#define NFC_HCI_ANY_E_INHIBITED                 0x08
#define NFC_HCI_ANY_E_TIMEOUT                   0x09
#define NFC_HCI_ANY_E_REG_ACCESS_DENIED         0x0a
#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED        0x0b

#endif /* __LOCAL_HCI_H */