1 /*
2  *  The NFC Controller Interface is the communication protocol between an
3  *  NFC Controller (NFCC) and a Device Host (DH).
4  *
5  *  Copyright (C) 2011 Texas Instruments, Inc.
6  *
7  *  Written by Ilan Elias <ilane@ti.com>
8  *
9  *  Acknowledgements:
10  *  This file is based on lib.c, which was written
11  *  by Maxim Krasnyansky.
12  *
13  *  This program is free software; you can redistribute it and/or modify
14  *  it under the terms of the GNU General Public License version 2
15  *  as published by the Free Software Foundation
16  *
17  *  This program is distributed in the hope that it will be useful,
18  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
19  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
20  *  GNU General Public License for more details.
21  *
22  *  You should have received a copy of the GNU General Public License
23  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
24  *
25  */
26 
27 #include <linux/module.h>
28 #include <linux/kernel.h>
29 #include <linux/types.h>
30 #include <linux/errno.h>
31 
32 #include <net/nfc/nci.h>
33 #include <net/nfc/nci_core.h>
34 
35 /* NCI status codes to Unix errno mapping */
nci_to_errno(__u8 code)36 int nci_to_errno(__u8 code)
37 {
38 	switch (code) {
39 	case NCI_STATUS_OK:
40 		return 0;
41 
42 	case NCI_STATUS_REJECTED:
43 		return -EBUSY;
44 
45 	case NCI_STATUS_RF_FRAME_CORRUPTED:
46 		return -EBADMSG;
47 
48 	case NCI_STATUS_NOT_INITIALIZED:
49 		return -EHOSTDOWN;
50 
51 	case NCI_STATUS_SYNTAX_ERROR:
52 	case NCI_STATUS_SEMANTIC_ERROR:
53 	case NCI_STATUS_INVALID_PARAM:
54 	case NCI_STATUS_RF_PROTOCOL_ERROR:
55 	case NCI_STATUS_NFCEE_PROTOCOL_ERROR:
56 		return -EPROTO;
57 
58 	case NCI_STATUS_UNKNOWN_GID:
59 	case NCI_STATUS_UNKNOWN_OID:
60 		return -EBADRQC;
61 
62 	case NCI_STATUS_MESSAGE_SIZE_EXCEEDED:
63 		return -EMSGSIZE;
64 
65 	case NCI_STATUS_DISCOVERY_ALREADY_STARTED:
66 		return -EALREADY;
67 
68 	case NCI_STATUS_DISCOVERY_TARGET_ACTIVATION_FAILED:
69 	case NCI_STATUS_NFCEE_INTERFACE_ACTIVATION_FAILED:
70 		return -ECONNREFUSED;
71 
72 	case NCI_STATUS_RF_TRANSMISSION_ERROR:
73 	case NCI_STATUS_NFCEE_TRANSMISSION_ERROR:
74 		return -ECOMM;
75 
76 	case NCI_STATUS_RF_TIMEOUT_ERROR:
77 	case NCI_STATUS_NFCEE_TIMEOUT_ERROR:
78 		return -ETIMEDOUT;
79 
80 	case NCI_STATUS_FAILED:
81 	default:
82 		return -ENOSYS;
83 	}
84 }
85 EXPORT_SYMBOL(nci_to_errno);
86