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 */
  36 int 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 }
  85 EXPORT_SYMBOL(nci_to_errno);