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 */
nci_to_errno(__u8 code)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);
74