smsendian.c

 1// SPDX-License-Identifier: GPL-2.0-or-later
 2/****************************************************************
 3
 4 Siano Mobile Silicon, Inc.
 5 MDTV receiver kernel modules.
 6 Copyright (C) 2006-2009, Uri Shkolnik
 7
 8
 9 ****************************************************************/
10
11#include <linux/export.h>
12#include <asm/byteorder.h>
13
14#include "smsendian.h"
15#include "smscoreapi.h"
16
17void smsendian_handle_tx_message(void *buffer)
18{
19#ifdef __BIG_ENDIAN
20	struct sms_msg_data *msg = buffer;
21	int i;
22	int msg_words;
23	u32 *msg_data = &msg->msg_data;
24
25	switch (msg->x_msg_header.msg_type) {
26	case MSG_SMS_DATA_DOWNLOAD_REQ:
27	{
28		msg->msg_data = le32_to_cpu((__force __le32)(msg->msg_data));
29		break;
30	}
31
32	default:
33		msg_words = (msg->x_msg_header.msg_length -
34				sizeof(struct sms_msg_hdr))/4;
35
36		for (i = 0; i < msg_words; i++)
37			msg_data[i] = le32_to_cpu((__force __le32)msg_data[i]);
38
39		break;
40	}
41#endif /* __BIG_ENDIAN */
42}
43EXPORT_SYMBOL_GPL(smsendian_handle_tx_message);
44
45void smsendian_handle_rx_message(void *buffer)
46{
47#ifdef __BIG_ENDIAN
48	struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
49	int i;
50	int msg_words;
51
52	switch (msg->x_msg_header.msg_type) {
53	case MSG_SMS_GET_VERSION_EX_RES:
54	{
55		struct sms_version_res *ver =
56			(struct sms_version_res *) msg;
57		ver->chip_model = le16_to_cpu((__force __le16)ver->chip_model);
58		break;
59	}
60
61	case MSG_SMS_DVBT_BDA_DATA:
62	case MSG_SMS_DAB_CHANNEL:
63	case MSG_SMS_DATA_MSG:
64	{
65		break;
66	}
67
68	default:
69	{
70		u32 *msg_data = &msg->msg_data;
71		msg_words = (msg->x_msg_header.msg_length -
72				sizeof(struct sms_msg_hdr))/4;
73
74		for (i = 0; i < msg_words; i++)
75			msg_data[i] = le32_to_cpu((__force __le32)msg_data[i]);
76
77		break;
78	}
79	}
80#endif /* __BIG_ENDIAN */
81}
82EXPORT_SYMBOL_GPL(smsendian_handle_rx_message);
83
84void smsendian_handle_message_header(void *msg)
85{
86#ifdef __BIG_ENDIAN
87	struct sms_msg_hdr *phdr = (struct sms_msg_hdr *)msg;
88
89	phdr->msg_type = le16_to_cpu((__force __le16)phdr->msg_type);
90	phdr->msg_length = le16_to_cpu((__force __le16)phdr->msg_length);
91	phdr->msg_flags = le16_to_cpu((__force __le16)phdr->msg_flags);
92#endif /* __BIG_ENDIAN */
93}
94EXPORT_SYMBOL_GPL(smsendian_handle_message_header);