cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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smsendian.c (2141B)

      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 = (struct sms_msg_data *)buffer;
     21	int i;
     22	int msg_words;
     23
     24	switch (msg->x_msg_header.msg_type) {
     25	case MSG_SMS_DATA_DOWNLOAD_REQ:
     26	{
     27		msg->msg_data[0] = le32_to_cpu((__force __le32)(msg->msg_data[0]));
     28		break;
     29	}
     30
     31	default:
     32		msg_words = (msg->x_msg_header.msg_length -
     33				sizeof(struct sms_msg_hdr))/4;
     34
     35		for (i = 0; i < msg_words; i++)
     36			msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
     37
     38		break;
     39	}
     40#endif /* __BIG_ENDIAN */
     41}
     42EXPORT_SYMBOL_GPL(smsendian_handle_tx_message);
     43
     44void smsendian_handle_rx_message(void *buffer)
     45{
     46#ifdef __BIG_ENDIAN
     47	struct sms_msg_data *msg = (struct sms_msg_data *)buffer;
     48	int i;
     49	int msg_words;
     50
     51	switch (msg->x_msg_header.msg_type) {
     52	case MSG_SMS_GET_VERSION_EX_RES:
     53	{
     54		struct sms_version_res *ver =
     55			(struct sms_version_res *) msg;
     56		ver->chip_model = le16_to_cpu((__force __le16)ver->chip_model);
     57		break;
     58	}
     59
     60	case MSG_SMS_DVBT_BDA_DATA:
     61	case MSG_SMS_DAB_CHANNEL:
     62	case MSG_SMS_DATA_MSG:
     63	{
     64		break;
     65	}
     66
     67	default:
     68	{
     69		msg_words = (msg->x_msg_header.msg_length -
     70				sizeof(struct sms_msg_hdr))/4;
     71
     72		for (i = 0; i < msg_words; i++)
     73			msg->msg_data[i] = le32_to_cpu((__force __le32)msg->msg_data[i]);
     74
     75		break;
     76	}
     77	}
     78#endif /* __BIG_ENDIAN */
     79}
     80EXPORT_SYMBOL_GPL(smsendian_handle_rx_message);
     81
     82void smsendian_handle_message_header(void *msg)
     83{
     84#ifdef __BIG_ENDIAN
     85	struct sms_msg_hdr *phdr = (struct sms_msg_hdr *)msg;
     86
     87	phdr->msg_type = le16_to_cpu((__force __le16)phdr->msg_type);
     88	phdr->msg_length = le16_to_cpu((__force __le16)phdr->msg_length);
     89	phdr->msg_flags = le16_to_cpu((__force __le16)phdr->msg_flags);
     90#endif /* __BIG_ENDIAN */
     91}
     92EXPORT_SYMBOL_GPL(smsendian_handle_message_header);