LXR linux/net/nfc/nci/lib.c

   1/*
   2 *  The NFC Controller Interface is the communication protocol between an
   3 *  NFC Controller (NFCC) and a Device Host (DH).
   4 *
   5 *  Copyright (C) 2011 Texas Instruments, Inc.
   6 *
   7 *  Written by Ilan Elias <ilane@ti.com>
   8 *
   9 *  Acknowledgements:
  10 *  This file is based on lib.c, which was written
  11 *  by Maxim Krasnyansky.
  12 *
  13 *  This program is free software; you can redistribute it and/or modify
  14 *  it under the terms of the GNU General Public License version 2
  15 *  as published by the Free Software Foundation
  16 *
  17 *  This program is distributed in the hope that it will be useful,
  18 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 *  GNU General Public License for more details.
  21 *
  22 *  You should have received a copy of the GNU General Public License
  23 *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  24 *
  25 */
  26
  27#include <linux/module.h>
  28#include <linux/kernel.h>
  29#include <linux/types.h>
  30#include <linux/errno.h>
  31
  32#include <net/nfc/nci.h>
  33#include <net/nfc/nci_core.h>
  34
  35/* NCI status codes to Unix errno mapping */
  36int nci_to_errno(__u8 code)
  37{
  38        switch (code) {
  39        case NCI_STATUS_OK:
  40                return 0;
  41
  42        case NCI_STATUS_REJECTED:
  43                return -EBUSY;
  44
  45        case NCI_STATUS_RF_FRAME_CORRUPTED:
  46                return -EBADMSG;
  47
  48        case NCI_STATUS_NOT_INITIALIZED:
  49                return -EHOSTDOWN;
  50
  51        case NCI_STATUS_SYNTAX_ERROR:
  52        case NCI_STATUS_SEMANTIC_ERROR:
  53        case NCI_STATUS_INVALID_PARAM:
  54        case NCI_STATUS_RF_PROTOCOL_ERROR:
  55        case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
  56                return -EPROTO;
  57
  58        case NCI_STATUS_UNKNOWN_GID:
  59        case NCI_STATUS_UNKNOWN_OID:
  60                return -EBADRQC;
  61
  62        case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
  63                return -EMSGSIZE;
  64
  65        case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
  66                return -EALREADY;
  67
  68        case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
  69        case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
  70                return -ECONNREFUSED;
  71
  72        case NCI_STATUS_RF_TRANSMISSION_ERROR:
  73        case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
  74                return -ECOMM;
  75
  76        case NCI_STATUS_RF_TIMEOUT_ERROR:
  77        case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
  78                return -ETIMEDOUT;
  79
  80        case NCI_STATUS_FAILED:
  81        default:
  82                return -ENOSYS;
  83        }
  84}
  85EXPORT_SYMBOL(nci_to_errno);
  86