lib.c

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/*
 *  The NFC Controller Interface is the communication protocol between an
 *  NFC Controller (NFCC) and a Device Host (DH).
 *
 *  Copyright (C) 2011 Texas Instruments, Inc.
 *
 *  Written by Ilan Elias <[email protected]>
 *
 *  Acknowledgements:
 *  This file is based on lib.c, which was written
 *  by Maxim Krasnyansky.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License version 2
 *  as published by the Free Software Foundation
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/types.h>
#include <linux/errno.h>

#include <net/nfc/nci.h>
#include <net/nfc/nci_core.h>

/* NCI status codes to Unix errno mapping */
int nci_to_errno(__u8 code)
{
    switch (code) {
    case NCI_STATUS_OK:
        return 0;

    case NCI_STATUS_REJECTED:
        return -EBUSY;

    case NCI_STATUS_RF_FRAME_CORRUPTED:
        return -EBADMSG;

    case NCI_STATUS_NOT_INITIALIZED:
        return -EHOSTDOWN;

    case NCI_STATUS_SYNTAX_ERROR:
    case NCI_STATUS_SEMANTIC_ERROR:
    case NCI_STATUS_INVALID_PARAM:
    case NCI_STATUS_RF_PROTOCOL_ERROR:
    case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
        return -EPROTO;

    case NCI_STATUS_UNKNOWN_GID:
    case NCI_STATUS_UNKNOWN_OID:
        return -EBADRQC;

    case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
        return -EMSGSIZE;

    case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
        return -EALREADY;

    case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
    case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
        return -ECONNREFUSED;

    case NCI_STATUS_RF_TRANSMISSION_ERROR:
    case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
        return -ECOMM;

    case NCI_STATUS_RF_TIMEOUT_ERROR:
    case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
        return -ETIMEDOUT;

    case NCI_STATUS_FAILED:
    default:
        return -ENOSYS;
    }
}
EXPORT_SYMBOL(nci_to_errno);