diff options
Diffstat (limited to 'package/kernel/lantiq/ltq-deu/src/ifxmips_des.c')
| -rw-r--r-- | package/kernel/lantiq/ltq-deu/src/ifxmips_des.c | 768 |
1 files changed, 768 insertions, 0 deletions
diff --git a/package/kernel/lantiq/ltq-deu/src/ifxmips_des.c b/package/kernel/lantiq/ltq-deu/src/ifxmips_des.c new file mode 100644 index 0000000..dcf6c18 --- /dev/null +++ b/package/kernel/lantiq/ltq-deu/src/ifxmips_des.c @@ -0,0 +1,768 @@ +/****************************************************************************** +** +** FILE NAME : ifxmips_des.c +** PROJECT : IFX UEIP +** MODULES : DEU Module +** +** DATE : September 8, 2009 +** AUTHOR : Mohammad Firdaus +** DESCRIPTION : Data Encryption Unit Driver for DES Algorithm +** 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 ifx deu driver +*/ + +/*! + \file ifxmips_des.c + \ingroup IFX_DEU + \brief DES encryption DEU driver file +*/ + +/*! + \defgroup IFX_DES_FUNCTIONS IFX_DES_FUNCTIONS + \ingroup IFX_DEU + \brief IFX DES Encryption functions +*/ + +/* Project Header Files */ +#include <linux/version.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/errno.h> +#include <linux/crypto.h> +#include <linux/interrupt.h> +#include <linux/delay.h> +#include <asm/byteorder.h> +#include <crypto/algapi.h> +#include "ifxmips_deu.h" + +#if defined(CONFIG_DANUBE) +#include "ifxmips_deu_danube.h" +extern int ifx_danube_pre_1_4; +#elif defined(CONFIG_AR9) +#include "ifxmips_deu_ar9.h" +#elif defined(CONFIG_VR9) || defined(CONFIG_AR10) +#include "ifxmips_deu_vr9.h" +#else +#error "Unkown platform" +#endif + +/* DMA specific header and variables */ + +#if 0 + #define CRTCL_SECT_INIT + #define CRTCL_SECT_START + #define CRTCL_SECT_END +#else +spinlock_t des_lock; +#define CRTCL_SECT_INIT spin_lock_init(&des_lock) +#define CRTCL_SECT_START spin_lock_irqsave(&des_lock, flag) +#define CRTCL_SECT_END spin_unlock_irqrestore(&des_lock, flag) +#endif + +/* Preprocessor declerations */ +#ifdef CRYPTO_DEBUG +extern char debug_level; +#define DPRINTF(level, format, args...) if (level < debug_level) printk(KERN_INFO "[%s %s %d]: " format, __FILE__, __func__, __LINE__, ##args); +#else +#define DPRINTF(level, format, args...) +#endif +#define DES_3DES_START IFX_DES_CON +#define DES_KEY_SIZE 8 +#define DES_EXPKEY_WORDS 32 +#define DES_BLOCK_SIZE 8 +#define DES3_EDE_KEY_SIZE (3 * DES_KEY_SIZE) +#define DES3_EDE_EXPKEY_WORDS (3 * DES_EXPKEY_WORDS) +#define DES3_EDE_BLOCK_SIZE DES_BLOCK_SIZE + +/* Function Declaration to prevent warning messages */ +void des_chip_init (void); +u32 endian_swap(u32 input); +u32 input_swap(u32 input); +int aes_memory_allocate(int value); +int des_memory_allocate(int value); +void memory_release(u32 *buffer); +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 ifx_deu_des (void *ctx_arg, u8 *out_arg, const u8 *in_arg, + u8 *iv_arg, u32 nbytes, int encdec, int mode); + +struct des_ctx { + int controlr_M; + int key_length; + u8 iv[DES_BLOCK_SIZE]; + u32 expkey[DES3_EDE_EXPKEY_WORDS]; +}; + +extern int disable_multiblock; +extern int disable_deudma; + + +/*! \fn int des_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) + * \ingroup IFX_DES_FUNCTIONS + * \brief sets DES key + * \param tfm linux crypto algo transform + * \param key input key + * \param keylen key length +*/ +int des_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int keylen) +{ + struct des_ctx *dctx = crypto_tfm_ctx(tfm); + + //printk("setkey in %s\n", __FILE__); + + dctx->controlr_M = 0; // des + dctx->key_length = keylen; + + memcpy ((u8 *) (dctx->expkey), key, keylen); + + return 0; +} + + +/*! \fn void ifx_deu_des(void *ctx_arg, u8 *out_arg, const u8 *in_arg, u8 *iv_arg, u32 nbytes, int encdec, int mode) + * \ingroup IFX_DES_FUNCTIONS + * \brief main interface to DES hardware + * \param ctx_arg crypto algo context + * \param out_arg output bytestream + * \param in_arg input bytestream + * \param iv_arg initialization vector + * \param nbytes length of bytestream + * \param encdec 1 for encrypt; 0 for decrypt + * \param mode operation mode such as ebc, cbc +*/ + +void ifx_deu_des (void *ctx_arg, u8 *out_arg, const u8 *in_arg, + u8 *iv_arg, u32 nbytes, int encdec, int mode) +{ + volatile struct des_t *des = (struct des_t *) DES_3DES_START; + struct des_ctx *dctx = ctx_arg; + u32 *key = dctx->expkey; + unsigned long flag; + + int i = 0; + int nblocks = 0; + + CRTCL_SECT_START; + + des->controlr.M = dctx->controlr_M; + if (dctx->controlr_M == 0) // des + { + des->K1HR = DEU_ENDIAN_SWAP(*((u32 *) key + 0)); + des->K1LR = DEU_ENDIAN_SWAP(*((u32 *) key + 1)); + + } + else { + /* Hardware Section */ + switch (dctx->key_length) { + case 24: + des->K3HR = DEU_ENDIAN_SWAP(*((u32 *) key + 4)); + des->K3LR = DEU_ENDIAN_SWAP(*((u32 *) key + 5)); + /* no break; */ + + case 16: + des->K2HR = DEU_ENDIAN_SWAP(*((u32 *) key + 2)); + des->K2LR = DEU_ENDIAN_SWAP(*((u32 *) key + 3)); + + /* no break; */ + case 8: + des->K1HR = DEU_ENDIAN_SWAP(*((u32 *) key + 0)); + des->K1LR = DEU_ENDIAN_SWAP(*((u32 *) key + 1)); + break; + + default: + CRTCL_SECT_END; + return; + } + } + + des->controlr.E_D = !encdec; //encryption + des->controlr.O = mode; //0 ECB 1 CBC 2 OFB 3 CFB 4 CTR hexdump(prin,sizeof(*des)); + + if (mode > 0) { + des->IVHR = DEU_ENDIAN_SWAP(*(u32 *) iv_arg); + des->IVLR = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 1)); + }; + + nblocks = nbytes / 4; + + for (i = 0; i < nblocks; i += 2) { + /* wait for busy bit to clear */ + + /*--- Workaround ---------------------------------------------------- + do a dummy read to the busy flag because it is not raised early + enough in CFB/OFB 3DES modes */ +#ifdef CRYPTO_DEBUG + printk ("ihr: %x\n", (*((u32 *) in_arg + i))); + printk ("ilr: %x\n", (*((u32 *) in_arg + 1 + i))); +#endif + des->IHR = INPUT_ENDIAN_SWAP(*((u32 *) in_arg + i)); + des->ILR = INPUT_ENDIAN_SWAP(*((u32 *) in_arg + 1 + i)); /* start crypto */ + + while (des->controlr.BUS) { + // this will not take long + } + + *((u32 *) out_arg + 0 + i) = des->OHR; + *((u32 *) out_arg + 1 + i) = des->OLR; + + } + + + + if (mode > 0) { + *(u32 *) iv_arg = DEU_ENDIAN_SWAP(des->IVHR); + *((u32 *) iv_arg + 1) = DEU_ENDIAN_SWAP(des->IVLR); + }; + + CRTCL_SECT_END; +} + +//definitions from linux/include/crypto.h: +//#define CRYPTO_TFM_MODE_ECB 0x00000001 +//#define CRYPTO_TFM_MODE_CBC 0x00000002 +//#define CRYPTO_TFM_MODE_CFB 0x00000004 +//#define CRYPTO_TFM_MODE_CTR 0x00000008 +//#define CRYPTO_TFM_MODE_OFB 0x00000010 // not even defined +//but hardware definition: 0 ECB 1 CBC 2 OFB 3 CFB 4 CTR + +/*! \fn void ifx_deu_des(void *ctx_arg, u8 *out_arg, const u8 *in_arg, u8 *iv_arg, u32 nbytes, int encdec, int mode) + * \ingroup IFX_DES_FUNCTIONS + * \brief main interface to DES hardware + * \param ctx_arg crypto algo context + * \param out_arg output bytestream + * \param in_arg input bytestream + * \param iv_arg initialization vector + * \param nbytes length of bytestream + * \param encdec 1 for encrypt; 0 for decrypt + * \param mode operation mode such as ebc, cbc +*/ + + + +/*! \fn void ifx_deu_des_ecb (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace) + * \ingroup IFX_DES_FUNCTIONS + * \brief sets DES hardware to ECB mode + * \param ctx crypto algo context + * \param dst output bytestream + * \param src input bytestream + * \param iv initialization vector + * \param nbytes length of bytestream + * \param encdec 1 for encrypt; 0 for decrypt + * \param inplace not used +*/ + +void ifx_deu_des_ecb (void *ctx, uint8_t *dst, const uint8_t *src, + uint8_t *iv, size_t nbytes, int encdec, int inplace) +{ + ifx_deu_des (ctx, dst, src, NULL, nbytes, encdec, 0); +} + +/*! \fn void ifx_deu_des_cbc (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace) + * \ingroup IFX_DES_FUNCTIONS + * \brief sets DES hardware to CBC mode + * \param ctx crypto algo context + * \param dst output bytestream + * \param src input bytestream + * \param iv initialization vector + * \param nbytes length of bytestream + * \param encdec 1 for encrypt; 0 for decrypt + * \param inplace not used +*/ +void ifx_deu_des_cbc (void *ctx, uint8_t *dst, const uint8_t *src, + uint8_t *iv, size_t nbytes, int encdec, int inplace) +{ + ifx_deu_des (ctx, dst, src, iv, nbytes, encdec, 1); +} + +/*! \fn void ifx_deu_des_ofb (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace) + * \ingroup IFX_DES_FUNCTIONS + * \brief sets DES hardware to OFB mode + * \param ctx crypto algo context + * \param dst output bytestream + * \param src input bytestream + * \param iv initialization vector + * \param nbytes length of bytestream + * \param encdec 1 for encrypt; 0 for decrypt + * \param inplace not used +*/ +void ifx_deu_des_ofb (void *ctx, uint8_t *dst, const uint8_t *src, + uint8_t *iv, size_t nbytes, int encdec, int inplace) +{ + ifx_deu_des (ctx, dst, src, iv, nbytes, encdec, 2); +} + +/*! \fn void ifx_deu_des_cfb (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace) + \ingroup IFX_DES_FUNCTIONS + \brief sets DES hardware to CFB mode + \param ctx crypto algo context + \param dst output bytestream + \param src input bytestream + \param iv initialization vector + \param nbytes length of bytestream + \param encdec 1 for encrypt; 0 for decrypt + \param inplace not used +*/ +void ifx_deu_des_cfb (void *ctx, uint8_t *dst, const uint8_t *src, + uint8_t *iv, size_t nbytes, int encdec, int inplace) +{ + ifx_deu_des (ctx, dst, src, iv, nbytes, encdec, 3); +} + +/*! \fn void ifx_deu_des_ctr (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace) + * \ingroup IFX_DES_FUNCTIONS + * \brief sets DES hardware to CTR mode + * \param ctx crypto algo context + * \param dst output bytestream + * \param src input bytestream + * \param iv initialization vector + * \param nbytes length of bytestream + * \param encdec 1 for encrypt; 0 for decrypt + * \param inplace not used +*/ +void ifx_deu_des_ctr (void *ctx, uint8_t *dst, const uint8_t *src, + uint8_t *iv, size_t nbytes, int encdec, int inplace) +{ + ifx_deu_des (ctx, dst, src, iv, nbytes, encdec, 4); +} + +/*! \fn void des_encrypt (struct crypto_tfm *tfm, uint8_t *out, const uint8_t *in) + * \ingroup IFX_DES_FUNCTIONS + * \brief encrypt DES_BLOCK_SIZE of data + * \param tfm linux crypto algo transform + * \param out output bytestream + * \param in input bytestream +*/ +void des_encrypt (struct crypto_tfm *tfm, uint8_t * out, const uint8_t * in) +{ + struct des_ctx *ctx = crypto_tfm_ctx(tfm); + ifx_deu_des (ctx, out, in, NULL, DES_BLOCK_SIZE, + CRYPTO_DIR_ENCRYPT, 0); + +} + +/*! \fn void des_decrypt (struct crypto_tfm *tfm, uint8_t *out, const uint8_t *in) + * \ingroup IFX_DES_FUNCTIONS + * \brief encrypt DES_BLOCK_SIZE of data + * \param tfm linux crypto algo transform + * \param out output bytestream + * \param in input bytestream +*/ +void des_decrypt (struct crypto_tfm *tfm, uint8_t * out, const uint8_t * in) +{ + struct des_ctx *ctx = crypto_tfm_ctx(tfm); + ifx_deu_des (ctx, out, in, NULL, DES_BLOCK_SIZE, + CRYPTO_DIR_DECRYPT, 0); +} + +/* + * \brief RFC2451: + * + * For DES-EDE3, there is no known need to reject weak or + * complementation keys. Any weakness is obviated by the use of + * multiple keys. + * + * However, if the first two or last two independent 64-bit keys are + * equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the + * same as DES. Implementers MUST reject keys that exhibit this + * property. + * + */ + +/*! \fn int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int keylen) + * \ingroup IFX_DES_FUNCTIONS + * \brief sets 3DES key + * \param tfm linux crypto algo transform + * \param key input key + * \param keylen key length +*/ +int des3_ede_setkey(struct crypto_tfm *tfm, const u8 *key, + unsigned int keylen) +{ + struct des_ctx *dctx = crypto_tfm_ctx(tfm); + + //printk("setkey in %s\n", __FILE__); + + dctx->controlr_M = keylen / 8 + 1; // 3DES EDE1 / EDE2 / EDE3 Mode + dctx->key_length = keylen; + + memcpy ((u8 *) (dctx->expkey), key, keylen); + + return 0; +} + +/* + * \brief DES function mappings +*/ +struct crypto_alg ifxdeu_des_alg = { + .cra_name = "des", + .cra_driver_name = "ifxdeu-des", + .cra_flags = CRYPTO_ALG_TYPE_CIPHER, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct des_ctx), + .cra_module = THIS_MODULE, + .cra_alignmask = 3, + .cra_list = LIST_HEAD_INIT(ifxdeu_des_alg.cra_list), + .cra_u = { .cipher = { + .cia_min_keysize = DES_KEY_SIZE, + .cia_max_keysize = DES_KEY_SIZE, + .cia_setkey = des_setkey, + .cia_encrypt = des_encrypt, + .cia_decrypt = des_decrypt } } +}; + +/* + * \brief DES function mappings +*/ +struct crypto_alg ifxdeu_des3_ede_alg = { + .cra_name = "des3_ede", + .cra_driver_name = "ifxdeu-des3_ede", + .cra_flags = CRYPTO_ALG_TYPE_CIPHER, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct des_ctx), + .cra_module = THIS_MODULE, + .cra_alignmask = 3, + .cra_list = LIST_HEAD_INIT(ifxdeu_des3_ede_alg.cra_list), + .cra_u = { .cipher = { + .cia_min_keysize = DES_KEY_SIZE, + .cia_max_keysize = DES_KEY_SIZE, + .cia_setkey = des3_ede_setkey, + .cia_encrypt = des_encrypt, + .cia_decrypt = des_decrypt } } +}; + +/*! \fn int ecb_des_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) + * \ingroup IFX_DES_FUNCTIONS + * \brief ECB DES encrypt using linux crypto blkcipher + * \param desc blkcipher descriptor + * \param dst output scatterlist + * \param src input scatterlist + * \param nbytes data size in bytes +*/ +int ecb_des_encrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + struct des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + struct blkcipher_walk walk; + int err; + + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + + while ((nbytes = walk.nbytes)) { + nbytes -= (nbytes % DES_BLOCK_SIZE); + ifx_deu_des_ecb(ctx, walk.dst.virt.addr, walk.src.virt.addr, + NULL, nbytes, CRYPTO_DIR_ENCRYPT, 0); + nbytes &= DES_BLOCK_SIZE - 1; + err = blkcipher_walk_done(desc, &walk, nbytes); + } + + return err; +} + +/*! \fn int ecb_des_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) + * \ingroup IFX_DES_FUNCTIONS + * \brief ECB DES decrypt using linux crypto blkcipher + * \param desc blkcipher descriptor + * \param dst output scatterlist + * \param src input scatterlist + * \param nbytes data size in bytes + * \return err +*/ +int ecb_des_decrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + struct des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + struct blkcipher_walk walk; + int err; + + DPRINTF(1, "\n"); + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + + while ((nbytes = walk.nbytes)) { + nbytes -= (nbytes % DES_BLOCK_SIZE); + ifx_deu_des_ecb(ctx, walk.dst.virt.addr, walk.src.virt.addr, + NULL, nbytes, CRYPTO_DIR_DECRYPT, 0); + nbytes &= DES_BLOCK_SIZE - 1; + err = blkcipher_walk_done(desc, &walk, nbytes); + } + + return err; +} + +/* + * \brief DES function mappings +*/ +struct crypto_alg ifxdeu_ecb_des_alg = { + .cra_name = "ecb(des)", + .cra_driver_name = "ifxdeu-ecb(des)", + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct des_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ifxdeu_ecb_des_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .setkey = des_setkey, + .encrypt = ecb_des_encrypt, + .decrypt = ecb_des_decrypt, + } + } +}; + +/* + * \brief DES function mappings +*/ +struct crypto_alg ifxdeu_ecb_des3_ede_alg = { + .cra_name = "ecb(des3_ede)", + .cra_driver_name = "ifxdeu-ecb(des3_ede)", + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct des_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ifxdeu_ecb_des3_ede_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .setkey = des3_ede_setkey, + .encrypt = ecb_des_encrypt, + .decrypt = ecb_des_decrypt, + } + } +}; + +/*! \fn int cbc_des_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) + * \ingroup IFX_DES_FUNCTIONS + * \brief CBC DES encrypt using linux crypto blkcipher + * \param desc blkcipher descriptor + * \param dst output scatterlist + * \param src input scatterlist + * \param nbytes data size in bytes + * \return err +*/ +int cbc_des_encrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + struct des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + struct blkcipher_walk walk; + int err; + + DPRINTF(1, "\n"); + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + + while ((nbytes = walk.nbytes)) { + u8 *iv = walk.iv; + nbytes -= (nbytes % DES_BLOCK_SIZE); + ifx_deu_des_cbc(ctx, walk.dst.virt.addr, walk.src.virt.addr, + iv, nbytes, CRYPTO_DIR_ENCRYPT, 0); + nbytes &= DES_BLOCK_SIZE - 1; + err = blkcipher_walk_done(desc, &walk, nbytes); + } + + return err; +} + +/*! \fn int cbc_des_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes) + * \ingroup IFX_DES_FUNCTIONS + * \brief CBC DES decrypt using linux crypto blkcipher + * \param desc blkcipher descriptor + * \param dst output scatterlist + * \param src input scatterlist + * \param nbytes data size in bytes + * \return err +*/ +int cbc_des_decrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + struct des_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); + struct blkcipher_walk walk; + int err; + + DPRINTF(1, "\n"); + blkcipher_walk_init(&walk, dst, src, nbytes); + err = blkcipher_walk_virt(desc, &walk); + + while ((nbytes = walk.nbytes)) { + u8 *iv = walk.iv; + nbytes -= (nbytes % DES_BLOCK_SIZE); + ifx_deu_des_cbc(ctx, walk.dst.virt.addr, walk.src.virt.addr, + iv, nbytes, CRYPTO_DIR_DECRYPT, 0); + nbytes &= DES_BLOCK_SIZE - 1; + err = blkcipher_walk_done(desc, &walk, nbytes); + } + + return err; +} + +/* + * \brief DES function mappings +*/ +struct crypto_alg ifxdeu_cbc_des_alg = { + .cra_name = "cbc(des)", + .cra_driver_name = "ifxdeu-cbc(des)", + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct des_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ifxdeu_cbc_des_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + .setkey = des_setkey, + .encrypt = cbc_des_encrypt, + .decrypt = cbc_des_decrypt, + } + } +}; + +/* + * \brief DES function mappings +*/ +struct crypto_alg ifxdeu_cbc_des3_ede_alg = { + .cra_name = "cbc(des3_ede)", + .cra_driver_name = "ifxdeu-cbc(des3_ede)", + .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER, + .cra_blocksize = DES3_EDE_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct des_ctx), + .cra_type = &crypto_blkcipher_type, + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(ifxdeu_cbc_des3_ede_alg.cra_list), + .cra_u = { + .blkcipher = { + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + .setkey = des3_ede_setkey, + .encrypt = cbc_des_encrypt, + .decrypt = cbc_des_decrypt, + } + } +}; + +/*! \fn int __init ifxdeu_init_des (void) + * \ingroup IFX_DES_FUNCTIONS + * \brief initialize des driver +*/ +int __init ifxdeu_init_des (void) +{ + int ret = -ENOSYS; + + +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20)) + if (!disable_multiblock) { + ifxdeu_des_alg.cra_u.cipher.cia_max_nbytes = DES_BLOCK_SIZE; //(size_t)-1; + ifxdeu_des_alg.cra_u.cipher.cia_req_align = 16; + ifxdeu_des_alg.cra_u.cipher.cia_ecb = ifx_deu_des_ecb; + ifxdeu_des_alg.cra_u.cipher.cia_cbc = ifx_deu_des_cbc; + ifxdeu_des_alg.cra_u.cipher.cia_cfb = ifx_deu_des_cfb; + ifxdeu_des_alg.cra_u.cipher.cia_ofb = ifx_deu_des_ofb; + } +#endif + + ret = crypto_register_alg(&ifxdeu_des_alg); + if (ret < 0) + goto des_err; + + ret = crypto_register_alg(&ifxdeu_ecb_des_alg); + if (ret < 0) + goto ecb_des_err; + + ret = crypto_register_alg(&ifxdeu_cbc_des_alg); + if (ret < 0) + goto cbc_des_err; + + ret = crypto_register_alg(&ifxdeu_des3_ede_alg); + if (ret < 0) + goto des3_ede_err; + + ret = crypto_register_alg(&ifxdeu_ecb_des3_ede_alg); + if (ret < 0) + goto ecb_des3_ede_err; + + ret = crypto_register_alg(&ifxdeu_cbc_des3_ede_alg); + if (ret < 0) + goto cbc_des3_ede_err; + + des_chip_init(); + CRTCL_SECT_INIT; + + + + printk (KERN_NOTICE "IFX DEU DES initialized%s%s.\n", disable_multiblock ? "" : " (multiblock)", disable_deudma ? "" : " (DMA)"); + return ret; + +des_err: + crypto_unregister_alg(&ifxdeu_des_alg); + printk(KERN_ERR "IFX des initialization failed!\n"); + return ret; +ecb_des_err: + crypto_unregister_alg(&ifxdeu_ecb_des_alg); + printk (KERN_ERR "IFX ecb_des initialization failed!\n"); + return ret; +cbc_des_err: + crypto_unregister_alg(&ifxdeu_cbc_des_alg); + printk (KERN_ERR "IFX cbc_des initialization failed!\n"); + return ret; +des3_ede_err: + crypto_unregister_alg(&ifxdeu_des3_ede_alg); + printk(KERN_ERR "IFX des3_ede initialization failed!\n"); + return ret; +ecb_des3_ede_err: + crypto_unregister_alg(&ifxdeu_ecb_des3_ede_alg); + printk (KERN_ERR "IFX ecb_des3_ede initialization failed!\n"); + return ret; +cbc_des3_ede_err: + crypto_unregister_alg(&ifxdeu_cbc_des3_ede_alg); + printk (KERN_ERR "IFX cbc_des3_ede initialization failed!\n"); + return ret; + +} + +/*! \fn void __exit ifxdeu_fini_des (void) + * \ingroup IFX_DES_FUNCTIONS + * \brief unregister des driver +*/ +void __exit ifxdeu_fini_des (void) +{ + crypto_unregister_alg (&ifxdeu_des_alg); + crypto_unregister_alg (&ifxdeu_ecb_des_alg); + crypto_unregister_alg (&ifxdeu_cbc_des_alg); + crypto_unregister_alg (&ifxdeu_des3_ede_alg); + crypto_unregister_alg (&ifxdeu_ecb_des3_ede_alg); + crypto_unregister_alg (&ifxdeu_cbc_des3_ede_alg); + +} + |