package/platform/lantiq/ltq-deu/src/ifxmips_deu_vr9.c

   1 /******************************************************************************
   2 **
   3 ** FILE NAME    : ifxmips_deu_vr9.c
   4 ** PROJECT      : IFX UEIP
   5 ** MODULES      : DEU Module for VR9
   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 /*!
  25   \defgroup  IFX_DEU IFX_DEU_DRIVERS
  26   \ingroup  API
  27   \brief deu driver module
  28 */
  29
  30 /*!
  31   \file         ifxmips_deu_vr9.c
  32   \ingroup      IFX_DEU
  33   \brief        board specific deu driver file for vr9
  34 */
  35
  36 /*!
  37   \defgroup   BOARD_SPECIFIC_FUNCTIONS IFX_BOARD_SPECIFIC_FUNCTIONS
  38   \ingroup IFX_DEU
  39   \brief board specific deu driver functions
  40 */
  41
  42 /* Project header files */
  43 #include <linux/module.h>
  44 #include <linux/init.h>
  45 #include <linux/types.h>
  46 #include <linux/errno.h>
  47 #include <asm/io.h> //dma_cache_inv
  48
  49 #include "ifxmips_deu_dma.h"
  50 #include "ifxmips_deu_vr9.h"
  51
  52 /* Function decleration */
  53 void aes_chip_init (void);
  54 void des_chip_init (void);
  55 int deu_dma_init (void);
  56 void deu_dma_priv_init(void);
  57 u32 endian_swap(u32 input);
  58 u32* memory_alignment(const u8 *arg, u32 *buff_alloc, int in_out, int nbytes);
  59 void aes_dma_memory_copy(u32 *outcopy, u32 *out_dma, u8 *out_arg, int nbytes);
  60 void des_dma_memory_copy(u32 *outcopy, u32 *out_dma, u8 *out_arg, int nbytes);
  61 void __exit ifxdeu_fini_dma(void);
  62
  63 #define DES_3DES_START  IFX_DES_CON
  64 #define AES_START       IFX_AES_CON
  65
  66 /* Variables */
  67
  68 u8 *g_dma_page_ptr = NULL;
  69 u8 *g_dma_block = NULL;
  70 u8 *g_dma_block2 = NULL;
  71
  72 deu_drv_priv_t deu_dma_priv;
  73
  74
  75 /*! \fn u32 endian_swap(u32 input)
  76  *  \ingroup BOARD_SPECIFIC_FUNCTIONS
  77  *  \brief Swap data given to the function
  78  *  \param input Data input to be swapped
  79  *  \return either the swapped data or the input data depending on whether it is in DMA mode or FPI mode
  80 */
  81
  82
  83 u32 endian_swap(u32 input)
  84 {
  85     return input;
  86 }
  87
  88 /*! \fn u32 input_swap(u32 input)
  89  *  \ingroup BOARD_SPECIFIC_FUNCTIONS
  90  *  \brief Not used
  91  *  \return input
  92 */
  93
  94 u32 input_swap(u32 input)
  95 {
  96     return input;
  97 }
  98
  99 /*! \fn void aes_chip_init (void)
 100  *  \ingroup BOARD_SPECIFIC_FUNCTIONS
 101  *  \brief initialize AES hardware
 102 */
 103
 104 void aes_chip_init (void)
 105 {
 106     volatile struct aes_t *aes = (struct aes_t *) AES_START;
 107
 108     // start crypto engine with write to ILR
 109     aes->controlr.SM = 1;
 110     aes->controlr.NDC = 0;
 111     asm("sync");
 112     aes->controlr.ENDI = 1;
 113     asm("sync");
 114     aes->controlr.ARS = 0;
 115
 116 }
 117
 118 /*! \fn void des_chip_init (void)
 119  *  \ingroup IFX_AES_FUNCTIONS
 120  *  \brief initialize DES hardware
 121 */
 122
 123 void des_chip_init (void)
 124 {
 125     volatile struct des_t *des = (struct des_t *) DES_3DES_START;
 126
 127     // start crypto engine with write to ILR
 128     des->controlr.SM = 1;
 129     des->controlr.NDC = 1;
 130     asm("sync");
 131     des->controlr.ENDI = 1;
 132     asm("sync");
 133     des->controlr.ARS = 0;
 134
 135 }
 136 /*! \fn void chip_version(void)
 137  *  \ingroup IFX_DES_FUNCTIONS
 138  *  \brief function not used in VR9
 139 */
 140 void chip_version(void)
 141 {
 142     return;
 143 }
 144