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 struct gate_pipe_map {
  24         u8 gate;
  25         u8 pipe;
  26 };
  27
  28 struct hcp_message {
  29         u8 header;              /* type -cmd,evt,rsp- + instruction */
  30         u8 data[];
  31 } __packed;
  32
  33 struct hcp_packet {
  34         u8 header;              /* cbit+pipe */
  35         struct hcp_message message;
  36 } __packed;
  37
  38 /*
  39  * HCI command execution completion callback.
  40  * result will be one of the HCI response codes.
  41  * skb contains the response data and must be disposed.
  42  */
  43 typedef void (*hci_cmd_cb_t) (struct nfc_hci_dev *hdev, u8 result,
  44                               struct sk_buff *skb, void *cb_data);
  45
  46 struct hcp_exec_waiter {
  47         wait_queue_head_t *wq;
  48         bool exec_complete;
  49         int exec_result;
  50         struct sk_buff *result_skb;
  51 };
  52
  53 struct hci_msg {
  54         struct list_head msg_l;
  55         struct sk_buff_head msg_frags;
  56         bool wait_response;
  57         hci_cmd_cb_t cb;
  58         void *cb_context;
  59         unsigned long completion_delay;
  60 };
  61
  62 struct hci_create_pipe_params {
  63         u8 src_gate;
  64         u8 dest_host;
  65         u8 dest_gate;
  66 } __packed;
  67
  68 struct hci_create_pipe_resp {
  69         u8 src_host;
  70         u8 src_gate;
  71         u8 dest_host;
  72         u8 dest_gate;
  73         u8 pipe;
  74 } __packed;
  75
  76 #define NFC_HCI_FRAGMENT        0x7f
  77
  78 #define HCP_HEADER(type, instr) ((((type) & 0x03) << 6) | ((instr) & 0x3f))
  79 #define HCP_MSG_GET_TYPE(header) ((header & 0xc0) >> 6)
  80 #define HCP_MSG_GET_CMD(header) (header & 0x3f)
  81
  82 int nfc_hci_hcp_message_tx(struct nfc_hci_dev *hdev, u8 pipe,
  83                            u8 type, u8 instruction,
  84                            const u8 *payload, size_t payload_len,
  85                            hci_cmd_cb_t cb, void *cb_data,
  86                            unsigned long completion_delay);
  87
  88 u8 nfc_hci_pipe2gate(struct nfc_hci_dev *hdev, u8 pipe);
  89
  90 void nfc_hci_hcp_message_rx(struct nfc_hci_dev *hdev, u8 pipe, u8 type,
  91                             u8 instruction, struct sk_buff *skb);
  92
  93 /* HCP headers */
  94 #define NFC_HCI_HCP_PACKET_HEADER_LEN   1
  95 #define NFC_HCI_HCP_MESSAGE_HEADER_LEN  1
  96 #define NFC_HCI_HCP_HEADER_LEN          2
  97
  98 /* HCP types */
  99 #define NFC_HCI_HCP_COMMAND     0x00
 100 #define NFC_HCI_HCP_EVENT       0x01
 101 #define NFC_HCI_HCP_RESPONSE    0x02
 102
 103 /* Generic commands */
 104 #define NFC_HCI_ANY_SET_PARAMETER       0x01
 105 #define NFC_HCI_ANY_GET_PARAMETER       0x02
 106 #define NFC_HCI_ANY_OPEN_PIPE           0x03
 107 #define NFC_HCI_ANY_CLOSE_PIPE          0x04
 108
 109 /* Reader RF commands */
 110 #define NFC_HCI_WR_XCHG_DATA            0x10
 111
 112 /* Admin commands */
 113 #define NFC_HCI_ADM_CREATE_PIPE                 0x10
 114 #define NFC_HCI_ADM_DELETE_PIPE                 0x11
 115 #define NFC_HCI_ADM_NOTIFY_PIPE_CREATED         0x12
 116 #define NFC_HCI_ADM_NOTIFY_PIPE_DELETED         0x13
 117 #define NFC_HCI_ADM_CLEAR_ALL_PIPE              0x14
 118 #define NFC_HCI_ADM_NOTIFY_ALL_PIPE_CLEARED     0x15
 119
 120 /* Generic responses */
 121 #define NFC_HCI_ANY_OK                          0x00
 122 #define NFC_HCI_ANY_E_NOT_CONNECTED             0x01
 123 #define NFC_HCI_ANY_E_CMD_PAR_UNKNOWN           0x02
 124 #define NFC_HCI_ANY_E_NOK                       0x03
 125 #define NFC_HCI_ANY_E_PIPES_FULL                0x04
 126 #define NFC_HCI_ANY_E_REG_PAR_UNKNOWN           0x05
 127 #define NFC_HCI_ANY_E_PIPE_NOT_OPENED           0x06
 128 #define NFC_HCI_ANY_E_CMD_NOT_SUPPORTED         0x07
 129 #define NFC_HCI_ANY_E_INHIBITED                 0x08
 130 #define NFC_HCI_ANY_E_TIMEOUT                   0x09
 131 #define NFC_HCI_ANY_E_REG_ACCESS_DENIED         0x0a
 132 #define NFC_HCI_ANY_E_PIPE_ACCESS_DENIED        0x0b
 133
 134 /* Pipes */
 135 #define NFC_HCI_INVALID_PIPE    0x80
 136 #define NFC_HCI_LINK_MGMT_PIPE  0x00
 137 #define NFC_HCI_ADMIN_PIPE      0x01
 138
 139 #endif /* __LOCAL_HCI_H */