LXR linux/net/nfc/hci/hci.h

   1/*
   2 * Copyright (C) 2012  Intel Corporation. All rights reserved.
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 * This program is distributed in the hope that it will be useful,
  10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  12 * GNU General Public License for more details.
  13 *
  14 * You should have received a copy of the GNU General Public License
  15 * along with this program; if not, write to the
  16 * Free Software Foundation, Inc.,
  17 * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18 */
  19
  20#ifndef __LOCAL_HCI_H
  21#define __LOCAL_HCI_H
  22
  23#include <net/nfc/hci.h>
  24
  25struct gate_pipe_map {
  26        u8 gate;
  27        u8 pipe;
  28};
  29
  30struct hcp_message {
  31        u8 header;              /* type -cmd,evt,rsp- + instruction */
  32        u8 data[];
  33} __packed;
  34
  35struct hcp_packet {
  36        u8 header;              /* cbit+pipe */
  37        struct hcp_message message;
  38} __packed;
  39
  40struct hcp_exec_waiter {
  41        wait_queue_head_t *wq;
  42        bool exec_complete;
  43        int exec_result;
  44        struct sk_buff *result_skb;
  45};
  46
  47struct hci_msg {
  48        struct list_head msg_l;
  49        struct sk_buff_head msg_frags;
  50        bool wait_response;
  51        data_exchange_cb_t cb;
  52        void *cb_context;
  53        unsigned long completion_delay;
  54};
  55
  56struct hci_create_pipe_params {
  57        u8 src_gate;
  58        u8 dest_host;
  59        u8 dest_gate;
  60} __packed;
  61
  62struct hci_create_pipe_resp {
  63        u8 src_host;
  64        u8 src_gate;
  65        u8 dest_host;
  66        u8 dest_gate;
  67        u8 pipe;
  68} __packed;
  69
  70#define NFC_HCI_FRAGMENT        0x7f
  71
  72#define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
  73#define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
  74#define HCP_MSG_GET_CMD(header) (header & 0x3f)
  75
  76int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
  77                           u8 type, u8 instruction,
  78                           const u8 *payload, size_t payload_len,
  79                           data_exchange_cb_t cb, void *cb_context,
  80                           unsigned long completion_delay);
  81
  82u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe);
  83
  84void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
  85                            u8 instruction, struct sk_buff *skb);
  86
  87/* HCP headers */
  88#define NFC_HCI_HCP_PACKET_HEADER_LEN   1
  89#define NFC_HCI_HCP_MESSAGE_HEADER_LEN  1
  90#define NFC_HCI_HCP_HEADER_LEN          2
  91
  92/* HCP types */
  93#define NFC_HCI_HCP_COMMAND     0x00
  94#define NFC_HCI_HCP_EVENT       0x01
  95#define NFC_HCI_HCP_RESPONSE    0x02
  96
  97/* Generic commands */
  98#define NFC_HCI_ANY_SET_PARAMETER       0x01
  99#define NFC_HCI_ANY_GET_PARAMETER       0x02
 100#define NFC_HCI_ANY_OPEN_PIPE           0x03
 101#define NFC_HCI_ANY_CLOSE_PIPE          0x04
 102
 103/* Reader RF commands */
 104#define NFC_HCI_WR_XCHG_DATA            0x10
 105
 106/* Admin commands */
 107#define NFC_HCI_ADM_CREATE_PIPE                 0x10
 108#define NFC_HCI_ADM_DELETE_PIPE                 0x11
 109#define NFC_HCI_ADM_NOTIFY_PIPE_CREATED         0x12
 110#define NFC_HCI_ADM_NOTIFY_PIPE_DELETED         0x13
 111#define NFC_HCI_ADM_CLEAR_ALL_PIPE              0x14
 112#define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED     0x15
 113
 114/* Generic responses */
 115#define NFC_HCI_ANY_OK                          0x00
 116#define NFC_HCI_ANY_E_NOT_CONNECTED             0x01
 117#define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN           0x02
 118#define NFC_HCI_ANY_E_NOK                       0x03
 119#define NFC_HCI_ANY_E_PIPES_FULL                0x04
 120#define NFC_HCI_ANY_E_REG_PAR_UNKNOWN           0x05
 121#define NFC_HCI_ANY_E_PIPE_NOT_OPENED           0x06
 122#define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED         0x07
 123#define NFC_HCI_ANY_E_INHIBITED                 0x08
 124#define NFC_HCI_ANY_E_TIMEOUT                   0x09
 125#define NFC_HCI_ANY_E_REG_ACCESS_DENIED         0x0a
 126#define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED        0x0b
 127
 128#endif /* __LOCAL_HCI_H */
 129