nfc/nci/lib.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  *  The NFC Controller Interface is the communication protocol between an
0004  *  NFC Controller (NFCC) and a Device Host (DH).
0005  *
0006  *  Copyright (C) 2011 Texas Instruments, Inc.
0007  *
0008  *  Written by Ilan Elias <ilane@ti.com>
0009  *
0010  *  Acknowledgements:
0011  *  This file is based on lib.c, which was written
0012  *  by Maxim Krasnyansky.
0013  */
0014
0015 #include <linux/module.h>
0016 #include <linux/kernel.h>
0017 #include <linux/types.h>
0018 #include <linux/errno.h>
0019
0020 #include <net/nfc/nci.h>
0021 #include <net/nfc/nci_core.h>
0022
0023 /* NCI status codes to Unix errno mapping */
0024 int nci_to_errno(__u8 code)
0025 {
0026     switch (code) {
0027     case NCI_STATUS_OK:
0028         return 0;
0029
0030     case NCI_STATUS_REJECTED:
0031         return -EBUSY;
0032
0033     case NCI_STATUS_RF_FRAME_CORRUPTED:
0034         return -EBADMSG;
0035
0036     case NCI_STATUS_NOT_INITIALIZED:
0037         return -EHOSTDOWN;
0038
0039     case NCI_STATUS_SYNTAX_ERROR:
0040     case NCI_STATUS_SEMANTIC_ERROR:
0041     case NCI_STATUS_INVALID_PARAM:
0042     case NCI_STATUS_RF_PROTOCOL_ERROR:
0043     case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
0044         return -EPROTO;
0045
0046     case NCI_STATUS_UNKNOWN_GID:
0047     case NCI_STATUS_UNKNOWN_OID:
0048         return -EBADRQC;
0049
0050     case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
0051         return -EMSGSIZE;
0052
0053     case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
0054         return -EALREADY;
0055
0056     case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
0057     case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
0058         return -ECONNREFUSED;
0059
0060     case NCI_STATUS_RF_TRANSMISSION_ERROR:
0061     case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
0062         return -ECOMM;
0063
0064     case NCI_STATUS_RF_TIMEOUT_ERROR:
0065     case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
0066         return -ETIMEDOUT;
0067
0068     case NCI_STATUS_FAILED:
0069     default:
0070         return -ENOSYS;
0071     }
0072 }
0073 EXPORT_SYMBOL(nci_to_errno);