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, write to the Free Software
  24  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  25  *
  26  */
  27
  28 #include <linux/module.h>
  29 #include <linux/kernel.h>
  30 #include <linux/types.h>
  31 #include <linux/errno.h>
  32
  33 #include <net/nfc/nci.h>
  34 #include <net/nfc/nci_core.h>
  35
  36 /* NCI status codes to Unix errno mapping */
  37 int nci_to_errno(__u8 code)
  38 {
  39         switch (code) {
  40         case NCI_STATUS_OK:
  41                 return 0;
  42
  43         case NCI_STATUS_REJECTED:
  44                 return -EBUSY;
  45
  46         case NCI_STATUS_RF_FRAME_CORRUPTED:
  47                 return -EBADMSG;
  48
  49         case NCI_STATUS_NOT_INITIALIZED:
  50                 return -EHOSTDOWN;
  51
  52         case NCI_STATUS_SYNTAX_ERROR:
  53         case NCI_STATUS_SEMANTIC_ERROR:
  54         case NCI_STATUS_INVALID_PARAM:
  55         case NCI_STATUS_RF_PROTOCOL_ERROR:
  56         case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
  57                 return -EPROTO;
  58
  59         case NCI_STATUS_UNKNOWN_GID:
  60         case NCI_STATUS_UNKNOWN_OID:
  61                 return -EBADRQC;
  62
  63         case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
  64                 return -EMSGSIZE;
  65
  66         case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
  67                 return -EALREADY;
  68
  69         case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
  70         case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
  71                 return -ECONNREFUSED;
  72
  73         case NCI_STATUS_RF_TRANSMISSION_ERROR:
  74         case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
  75                 return -ECOMM;
  76
  77         case NCI_STATUS_RF_TIMEOUT_ERROR:
  78         case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
  79                 return -ETIMEDOUT;
  80
  81         case NCI_STATUS_FAILED:
  82         default:
  83                 return -ENOSYS;
  84         }
  85 }
  86 EXPORT_SYMBOL(nci_to_errno);