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192.168.1.100 / T108 / c2023d5d03be91dbb983606f0ec5e9e4ea36c8c2 / . / package / kernel / lantiq / ltq-deu / src / ifxmips_deu_ar9.c
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b.liue9582032025-04-17 19:18:16 +0800[diff] [blame]1/******************************************************************************
2**
3** FILE NAME : ifxmips_deu_ar9.c
4** PROJECT : IFX UEIP
5** MODULES : DEU Module for AR9
6**
7** DATE : September 8, 2009
8** AUTHOR : Mohammad Firdaus
9** DESCRIPTION : Data Encryption Unit Driver
10** COPYRIGHT : Copyright (c) 2009
11** Infineon Technologies AG
12** Am Campeon 1-12, 85579 Neubiberg, Germany
13**
14** This program is free software; you can redistribute it and/or modify
15** it under the terms of the GNU General Public License as published by
16** the Free Software Foundation; either version 2 of the License, or
17** (at your option) any later version.
18**
19** HISTORY
20** $Date $Author $Comment
21** 08,Sept 2009 Mohammad Firdaus Initial UEIP release
22*******************************************************************************/
23/*!
24 \defgroup IFX_DEU IFX_DEU_DRIVERS
25 \ingroup API
26 \brief ifx deu driver module
27*/
28
29/*!
30 \file ifxmips_deu_ar9.c
31 \brief ifx deu board specific driver file for ar9
32*/
33
34/*!
35 \defgroup BOARD_SPECIFIC_FUNCTIONS IFX_BOARD_SPECIFIC_FUNCTIONS
36 \ingroup IFX_DEU
37 \brief board specific functions
38*/
39
40/* Project header files */
41#include <linux/module.h>
42#include <linux/init.h>
43#include <linux/types.h>
44#include <linux/errno.h>
45#include <asm/io.h> //dma_cache_inv
46
47#include "ifxmips_deu_dma.h"
48#include "ifxmips_deu_ar9.h"
49
50/* Function decleration */
51void aes_chip_init (void);
52void des_chip_init (void);
53int deu_dma_init (void);
54u32 endian_swap(u32 input);
55u32* memory_alignment(const u8 *arg, u32 *buff_alloc, int in_out, int nbytes);
56void aes_dma_memory_copy(u32 *outcopy, u32 *out_dma, u8 *out_arg, int nbytes);
57void des_dma_memory_copy(u32 *outcopy, u32 *out_dma, u8 *out_arg, int nbytes);
58void deu_dma_priv_init(void);
59void __exit ifxdeu_fini_dma(void);
60
61#define DES_3DES_START IFX_DES_CON
62#define AES_START IFX_AES_CON
63#define CLC_START IFX_DEU_CLK
64
65/* Variables */
66
67u8 *g_dma_page_ptr = NULL;
68u8 *g_dma_block = NULL;
69u8 *g_dma_block2 = NULL;
70
71deu_drv_priv_t deu_dma_priv;
72
73
74/*! \fn u32 endian_swap(u32 input)
75 * \ingroup BOARD_SPECIFIC_FUNCTIONS
76 * \brief Swap data given to the function
77 * \param input Data input to be swapped
78 * \return either the swapped data or the input data depending on whether it is in DMA mode or FPI mode
79*/
80u32 endian_swap(u32 input)
81{
82 return input;
83}
84
85/*! \fn u32 input_swap(u32 input)
86 * \ingroup BOARD_SPECIFIC_FUNCTIONS
87 * \brief Not used
88 * \return input
89*/
90
91u32 input_swap(u32 input)
92{
93 return input;
94}
95
96/*! \fn void aes_chip_init (void)
97 * \ingroup BOARD_SPECIFIC_FUNCTIONS
98 * \brief initialize AES hardware
99*/
100
101void aes_chip_init (void)
102{
103 volatile struct aes_t *aes = (struct aes_t *) AES_START;
104
105 aes->controlr.SM = 1;
106 aes->controlr.ARS = 1;
107
108}
109
110/*! \fn void des_chip_init (void)
111 * \ingroup BOARD_SPECIFIC_FUNCTIONS
112 * \brief initialize DES hardware
113*/
114
115void des_chip_init (void)
116{
117 volatile struct des_t *des = (struct des_t *) DES_3DES_START;
118
119 // start crypto engine with write to ILR
120 des->controlr.SM = 1;
121 asm("sync");
122 des->controlr.ARS = 1;
123
124}
125
126/*! \fn void chip_version(void)
127 * \ingroup BOARD_SPECIFIC_FUNCTIONS
128 * \brief not used!
129*/
130
131void chip_version(void)
132{
133 return;
134}
135