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);
74
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