| 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 | |
| 73 | void chip_version(void); |
| 74 | |
| 75 | /*! \fn static int __init deu_init (void) |
| 76 | * \ingroup IFX_DEU_FUNCTIONS |
| 77 | * \brief link all modules that have been selected in kernel config for ifx hw crypto support |
| 78 | * \return ret |
| 79 | */ |
| 80 | |
| 81 | static int __devinit ltq_deu_probe(struct platform_device *pdev) |
| 82 | { |
| 83 | int ret = -ENOSYS; |
| 84 | |
| 85 | |
| 86 | START_DEU_POWER; |
| 87 | |
| 88 | #define IFX_DEU_DRV_VERSION "2.0.0" |
| 89 | printk(KERN_INFO "Infineon Technologies DEU driver version %s \n", IFX_DEU_DRV_VERSION); |
| 90 | |
| 91 | FIND_DEU_CHIP_VERSION; |
| 92 | |
| 93 | #if defined(CONFIG_CRYPTO_DEV_DES) |
| 94 | if ((ret = ifxdeu_init_des ())) { |
| 95 | printk (KERN_ERR "IFX DES initialization failed!\n"); |
| 96 | } |
| 97 | #endif |
| 98 | #if defined(CONFIG_CRYPTO_DEV_AES) |
| 99 | if ((ret = ifxdeu_init_aes ())) { |
| 100 | printk (KERN_ERR "IFX AES initialization failed!\n"); |
| 101 | } |
| 102 | |
| 103 | #endif |
| 104 | #if defined(CONFIG_CRYPTO_DEV_ARC4) |
| 105 | if ((ret = ifxdeu_init_arc4 ())) { |
| 106 | printk (KERN_ERR "IFX ARC4 initialization failed!\n"); |
| 107 | } |
| 108 | |
| 109 | #endif |
| 110 | #if defined(CONFIG_CRYPTO_DEV_SHA1) |
| 111 | if ((ret = ifxdeu_init_sha1 ())) { |
| 112 | printk (KERN_ERR "IFX SHA1 initialization failed!\n"); |
| 113 | } |
| 114 | #endif |
| 115 | #if defined(CONFIG_CRYPTO_DEV_MD5) |
| 116 | if ((ret = ifxdeu_init_md5 ())) { |
| 117 | printk (KERN_ERR "IFX MD5 initialization failed!\n"); |
| 118 | } |
| 119 | |
| 120 | #endif |
| 121 | #if defined(CONFIG_CRYPTO_DEV_SHA1_HMAC) |
| 122 | if ((ret = ifxdeu_init_sha1_hmac ())) { |
| 123 | printk (KERN_ERR "IFX SHA1_HMAC initialization failed!\n"); |
| 124 | } |
| 125 | #endif |
| 126 | #if defined(CONFIG_CRYPTO_DEV_MD5_HMAC) |
| 127 | if ((ret = ifxdeu_init_md5_hmac ())) { |
| 128 | printk (KERN_ERR "IFX MD5_HMAC initialization failed!\n"); |
| 129 | } |
| 130 | #endif |
| 131 | |
| 132 | |
| 133 | |
| 134 | return ret; |
| 135 | |
| 136 | } |
| 137 | |
| 138 | /*! \fn static void __exit deu_fini (void) |
| 139 | * \ingroup IFX_DEU_FUNCTIONS |
| 140 | * \brief remove the loaded crypto algorithms |
| 141 | */ |
| 142 | static int __devexit ltq_deu_remove(struct platform_device *pdev) |
| 143 | { |
| 144 | //#ifdef CONFIG_CRYPTO_DEV_PWR_SAVE_MODE |
| 145 | #if defined(CONFIG_CRYPTO_DEV_DES) |
| 146 | ifxdeu_fini_des (); |
| 147 | #endif |
| 148 | #if defined(CONFIG_CRYPTO_DEV_AES) |
| 149 | ifxdeu_fini_aes (); |
| 150 | #endif |
| 151 | #if defined(CONFIG_CRYPTO_DEV_ARC4) |
| 152 | ifxdeu_fini_arc4 (); |
| 153 | #endif |
| 154 | #if defined(CONFIG_CRYPTO_DEV_SHA1) |
| 155 | ifxdeu_fini_sha1 (); |
| 156 | #endif |
| 157 | #if defined(CONFIG_CRYPTO_DEV_MD5) |
| 158 | ifxdeu_fini_md5 (); |
| 159 | #endif |
| 160 | #if defined(CONFIG_CRYPTO_DEV_SHA1_HMAC) |
| 161 | ifxdeu_fini_sha1_hmac (); |
| 162 | #endif |
| 163 | #if defined(CONFIG_CRYPTO_DEV_MD5_HMAC) |
| 164 | ifxdeu_fini_md5_hmac (); |
| 165 | #endif |
| 166 | printk("DEU has exited successfully\n"); |
| 167 | |
| 168 | return 0; |
| 169 | } |
| 170 | |
| 171 | |
| 172 | int disable_multiblock = 0; |
| 173 | |
| 174 | #if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) |
| 175 | module_param(disable_multiblock,int,0); |
| 176 | |
| 177 | #else |
| 178 | //MODULE_PARM (disable_multiblock, "i"); |
| 179 | MODULE_PARM_DESC (disable_multiblock, |
| 180 | "Disable encryption of whole multiblock buffers."); |
| 181 | #endif |
| 182 | |
| 183 | static const struct of_device_id ltq_deu_match[] = { |
| 184 | #ifdef CONFIG_DANUBE |
| 185 | { .compatible = "lantiq,deu-danube"}, |
| 186 | #elif defined CONFIG_AR9 |
| 187 | { .compatible = "lantiq,deu-arx100"}, |
| 188 | #elif defined CONFIG_VR9 |
| 189 | { .compatible = "lantiq,deu-xrx200"}, |
| 190 | #endif |
| 191 | {}, |
| 192 | }; |
| 193 | MODULE_DEVICE_TABLE(of, ltq_deu_match); |
| 194 | |
| 195 | |
| 196 | static struct platform_driver ltq_deu_driver = { |
| 197 | .probe = ltq_deu_probe, |
| 198 | .remove = __devexit_p(ltq_deu_remove), |
| 199 | .driver = { |
| 200 | .name = "deu", |
| 201 | .owner = THIS_MODULE, |
| 202 | .of_match_table = ltq_deu_match, |
| 203 | }, |
| 204 | }; |
| 205 | |
| 206 | module_platform_driver(ltq_deu_driver); |
| 207 | |
| 208 | MODULE_DESCRIPTION ("Infineon DEU crypto engine support."); |
| 209 | MODULE_LICENSE ("GPL"); |
| 210 | MODULE_AUTHOR ("Mohammad Firdaus"); |
| 211 | |
