package/kernel/lantiq/ltq-deu/src/ifxmips_deu.c

   1 /******************************************************************************
   2 **
   3 ** FILE NAME    : ifxmips_deu.c
   4 ** PROJECT      : IFX UEIP
   5 ** MODULES      : DEU Module for Danube
   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 ifx deu driver module
  28 */
  29
  30 /*!
  31   \file ifxmips_deu.c
  32   \ingroup IFX_DEU
  33   \brief main deu driver file
  34 */
  35
  36 /*!
  37  \defgroup IFX_DEU_FUNCTIONS IFX_DEU_FUNCTIONS
  38  \ingroup IFX_DEU
  39  \brief IFX DEU functions
  40 */
  41
  42 /* Project header */
  43 #include <linux/version.h>
  44 #if defined(CONFIG_MODVERSIONS)
  45 #define MODVERSIONS
  46 #include <linux/modversions.h>
  47 #endif
  48 #include <linux/module.h>
  49 #include <linux/init.h>
  50 #include <linux/types.h>
  51 #include <linux/errno.h>
  52 #include <linux/crypto.h>
  53 #include <linux/proc_fs.h>
  54 #include <linux/platform_device.h>
  55 #include <linux/fs.h>       /* Stuff about file systems that we need */
  56 #include <asm/byteorder.h>
  57 #include "ifxmips_deu.h"
  58
  59 #include <lantiq_soc.h>
  60
  61 #if defined(CONFIG_DANUBE)
  62 #include "ifxmips_deu_danube.h"
  63 #elif defined(CONFIG_AR9)
  64 #include "ifxmips_deu_ar9.h"
  65 #elif defined(CONFIG_VR9) || defined(CONFIG_AR10)
  66 #include "ifxmips_deu_vr9.h"
  67 #else
  68 #error "Platform unknown!"
  69 #endif /* CONFIG_xxxx */
  70
  71 int disable_deudma = 1;
  72 spinlock_t ltq_deu_hash_lock;
  73 EXPORT_SYMBOL_GPL(ltq_deu_hash_lock);
  74
  75 void chip_version(void);
  76
  77 /*! \fn static int __init deu_init (void)
  78  *  \ingroup IFX_DEU_FUNCTIONS
  79  *  \brief link all modules that have been selected in kernel config for ifx hw crypto support
  80  *  \return ret
  81 */
  82
  83 static int ltq_deu_probe(struct platform_device *pdev)
  84 {
  85     int ret = -ENOSYS;
  86
  87
  88     START_DEU_POWER;
  89     CRTCL_SECT_HASH_INIT;
  90
  91 #define IFX_DEU_DRV_VERSION         "2.0.0"
  92          printk(KERN_INFO "Infineon Technologies DEU driver version %s \n", IFX_DEU_DRV_VERSION);
  93
  94     FIND_DEU_CHIP_VERSION;
  95
  96 #if defined(CONFIG_CRYPTO_DEV_DES)
  97     if ((ret = ifxdeu_init_des ())) {
  98         printk (KERN_ERR "IFX DES initialization failed!\n");
  99     }
 100 #endif
 101 #if defined(CONFIG_CRYPTO_DEV_AES)
 102     if ((ret = ifxdeu_init_aes ())) {
 103         printk (KERN_ERR "IFX AES initialization failed!\n");
 104     }
 105
 106 #endif
 107 #if defined(CONFIG_CRYPTO_DEV_ARC4)
 108     if ((ret = ifxdeu_init_arc4 ())) {
 109         printk (KERN_ERR "IFX ARC4 initialization failed!\n");
 110     }
 111
 112 #endif
 113 #if defined(CONFIG_CRYPTO_DEV_SHA1)
 114     if ((ret = ifxdeu_init_sha1 ())) {
 115         printk (KERN_ERR "IFX SHA1 initialization failed!\n");
 116     }
 117 #endif
 118 #if defined(CONFIG_CRYPTO_DEV_MD5)
 119     if ((ret = ifxdeu_init_md5 ())) {
 120         printk (KERN_ERR "IFX MD5 initialization failed!\n");
 121     }
 122
 123 #endif
 124 #if defined(CONFIG_CRYPTO_DEV_SHA1_HMAC)
 125     if ((ret = ifxdeu_init_sha1_hmac ())) {
 126         printk (KERN_ERR "IFX SHA1_HMAC initialization failed!\n");
 127     }
 128 #endif
 129 #if defined(CONFIG_CRYPTO_DEV_MD5_HMAC)
 130     if ((ret = ifxdeu_init_md5_hmac ())) {
 131         printk (KERN_ERR "IFX MD5_HMAC initialization failed!\n");
 132     }
 133 #endif
 134
 135
 136
 137     return ret;
 138
 139 }
 140
 141 /*! \fn static void __exit deu_fini (void)
 142  *  \ingroup IFX_DEU_FUNCTIONS
 143  *  \brief remove the loaded crypto algorithms
 144 */
 145 static int ltq_deu_remove(struct platform_device *pdev)
 146 {
 147 //#ifdef CONFIG_CRYPTO_DEV_PWR_SAVE_MODE
 148     #if defined(CONFIG_CRYPTO_DEV_DES)
 149     ifxdeu_fini_des ();
 150     #endif
 151     #if defined(CONFIG_CRYPTO_DEV_AES)
 152     ifxdeu_fini_aes ();
 153     #endif
 154     #if defined(CONFIG_CRYPTO_DEV_ARC4)
 155     ifxdeu_fini_arc4 ();
 156     #endif
 157     #if defined(CONFIG_CRYPTO_DEV_SHA1)
 158     ifxdeu_fini_sha1 ();
 159     #endif
 160     #if defined(CONFIG_CRYPTO_DEV_MD5)
 161     ifxdeu_fini_md5 ();
 162     #endif
 163     #if defined(CONFIG_CRYPTO_DEV_SHA1_HMAC)
 164     ifxdeu_fini_sha1_hmac ();
 165     #endif
 166     #if defined(CONFIG_CRYPTO_DEV_MD5_HMAC)
 167     ifxdeu_fini_md5_hmac ();
 168     #endif
 169     printk("DEU has exited successfully\n");
 170
 171         return 0;
 172 }
 173
 174
 175 int disable_multiblock = 0;
 176
 177 module_param(disable_multiblock,int,0);
 178
 179
 180 static const struct of_device_id ltq_deu_match[] = {
 181 #ifdef CONFIG_DANUBE
 182         { .compatible = "lantiq,deu-danube"},
 183 #elif defined CONFIG_AR9
 184         { .compatible = "lantiq,deu-arx100"},
 185 #elif defined CONFIG_VR9
 186         { .compatible = "lantiq,deu-xrx200"},
 187 #endif
 188         {},
 189 };
 190 MODULE_DEVICE_TABLE(of, ltq_deu_match);
 191
 192
 193 static struct platform_driver ltq_deu_driver = {
 194         .probe = ltq_deu_probe,
 195         .remove = ltq_deu_remove,
 196         .driver = {
 197                 .name = "deu",
 198                 .owner = THIS_MODULE,
 199                 .of_match_table = ltq_deu_match,
 200         },
 201 };
 202
 203 module_platform_driver(ltq_deu_driver);
 204
 205 MODULE_DESCRIPTION ("Infineon DEU crypto engine support.");
 206 MODULE_LICENSE ("GPL");
 207 MODULE_AUTHOR ("Mohammad Firdaus");