net/nfc/nci/lib.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  *  The NFC Controller Interface is the communication protocol between an
   4  *  NFC Controller (NFCC) and a Device Host (DH).
   5  *
   6  *  Copyright (C) 2011 Texas Instruments, Inc.
   7  *
   8  *  Written by Ilan Elias <ilane@ti.com>
   9  *
  10  *  Acknowledgements:
  11  *  This file is based on lib.c, which was written
  12  *  by Maxim Krasnyansky.
  13  */
  14
  15 #include <linux/module.h>
  16 #include <linux/kernel.h>
  17 #include <linux/types.h>
  18 #include <linux/errno.h>
  19
  20 #include <net/nfc/nci.h>
  21 #include <net/nfc/nci_core.h>
  22
  23 /* NCI status codes to Unix errno mapping */
  24 int nci_to_errno(__u8 code)
  25 {
  26         switch (code) {
  27         case NCI_STATUS_OK:
  28                 return 0;
  29
  30         case NCI_STATUS_REJECTED:
  31                 return -EBUSY;
  32
  33         case NCI_STATUS_RF_FRAME_CORRUPTED:
  34                 return -EBADMSG;
  35
  36         case NCI_STATUS_NOT_INITIALIZED:
  37                 return -EHOSTDOWN;
  38
  39         case NCI_STATUS_SYNTAX_ERROR:
  40         case NCI_STATUS_SEMANTIC_ERROR:
  41         case NCI_STATUS_INVALID_PARAM:
  42         case NCI_STATUS_RF_PROTOCOL_ERROR:
  43         case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
  44                 return -EPROTO;
  45
  46         case NCI_STATUS_UNKNOWN_GID:
  47         case NCI_STATUS_UNKNOWN_OID:
  48                 return -EBADRQC;
  49
  50         case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
  51                 return -EMSGSIZE;
  52
  53         case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
  54                 return -EALREADY;
  55
  56         case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
  57         case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
  58                 return -ECONNREFUSED;
  59
  60         case NCI_STATUS_RF_TRANSMISSION_ERROR:
  61         case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
  62                 return -ECOMM;
  63
  64         case NCI_STATUS_RF_TIMEOUT_ERROR:
  65         case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
  66                 return -ETIMEDOUT;
  67
  68         case NCI_STATUS_FAILED:
  69         default:
  70                 return -ENOSYS;
  71         }
  72 }
  73 EXPORT_SYMBOL(nci_to_errno);