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/******************************************************************************
**
** FILE NAME : ifxmips_deu_vr9.c
** PROJECT : IFX UEIP
** MODULES : DEU Module for VR9
**
** DATE : September 8, 2009
** AUTHOR : Mohammad Firdaus
** DESCRIPTION : Data Encryption Unit Driver
** COPYRIGHT : Copyright (c) 2009
** Infineon Technologies AG
** Am Campeon 1-12, 85579 Neubiberg, Germany
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation; either version 2 of the License, or
** (at your option) any later version.
**
** HISTORY
** $Date $Author $Comment
** 08,Sept 2009 Mohammad Firdaus Initial UEIP release
*******************************************************************************/
/*!
\defgroup IFX_DEU IFX_DEU_DRIVERS
\ingroup API
\brief deu driver module
*/
/*!
\file ifxmips_deu_vr9.c
\ingroup IFX_DEU
\brief board specific deu driver file for vr9
*/
/*!
\defgroup BOARD_SPECIFIC_FUNCTIONS IFX_BOARD_SPECIFIC_FUNCTIONS
\ingroup IFX_DEU
\brief board specific deu driver functions
*/
/* Project header files */
#include <linux/module.h>
#include <linux/init.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <asm/io.h> //dma_cache_inv
#include "ifxmips_deu_dma.h"
#include "ifxmips_deu_vr9.h"
/* Function decleration */
void aes_chip_init (void);
void des_chip_init (void);
int deu_dma_init (void);
void deu_dma_priv_init(void);
u32 endian_swap(u32 input);
u32* memory_alignment(const u8 *arg, u32 *buff_alloc, int in_out, int nbytes);
void aes_dma_memory_copy(u32 *outcopy, u32 *out_dma, u8 *out_arg, int nbytes);
void des_dma_memory_copy(u32 *outcopy, u32 *out_dma, u8 *out_arg, int nbytes);
void __exit ifxdeu_fini_dma(void);
#define DES_3DES_START IFX_DES_CON
#define AES_START IFX_AES_CON
/* Variables */
u8 *g_dma_page_ptr = NULL;
u8 *g_dma_block = NULL;
u8 *g_dma_block2 = NULL;
deu_drv_priv_t deu_dma_priv;
/*! \fn u32 endian_swap(u32 input)
* \ingroup BOARD_SPECIFIC_FUNCTIONS
* \brief Swap data given to the function
* \param input Data input to be swapped
* \return either the swapped data or the input data depending on whether it is in DMA mode or FPI mode
*/
u32 endian_swap(u32 input)
{
return input;
}
/*! \fn u32 input_swap(u32 input)
* \ingroup BOARD_SPECIFIC_FUNCTIONS
* \brief Not used
* \return input
*/
u32 input_swap(u32 input)
{
return input;
}
/*! \fn void aes_chip_init (void)
* \ingroup BOARD_SPECIFIC_FUNCTIONS
* \brief initialize AES hardware
*/
void aes_chip_init (void)
{
volatile struct aes_t *aes = (struct aes_t *) AES_START;
// start crypto engine with write to ILR
aes->controlr.SM = 1;
aes->controlr.NDC = 0;
asm("sync");
aes->controlr.ENDI = 1;
asm("sync");
aes->controlr.ARS = 0;
}
/*! \fn void des_chip_init (void)
* \ingroup IFX_AES_FUNCTIONS
* \brief initialize DES hardware
*/
void des_chip_init (void)
{
volatile struct des_t *des = (struct des_t *) DES_3DES_START;
// start crypto engine with write to ILR
des->controlr.SM = 1;
des->controlr.NDC = 1;
asm("sync");
des->controlr.ENDI = 1;
asm("sync");
des->controlr.ARS = 0;
}
/*! \fn void chip_version(void)
* \ingroup IFX_DES_FUNCTIONS
* \brief function not used in VR9
*/
void chip_version(void)
{
return;
}