diff options
Diffstat (limited to 'target/linux/ifxmips/files-2.6.33/drivers/crypto/ifxmips/ifxmips_des.c')
| -rwxr-xr-x | target/linux/ifxmips/files-2.6.33/drivers/crypto/ifxmips/ifxmips_des.c | 893 |
1 files changed, 0 insertions, 893 deletions
diff --git a/target/linux/ifxmips/files-2.6.33/drivers/crypto/ifxmips/ifxmips_des.c b/target/linux/ifxmips/files-2.6.33/drivers/crypto/ifxmips/ifxmips_des.c deleted file mode 100755 index ffceb2868..000000000 --- a/target/linux/ifxmips/files-2.6.33/drivers/crypto/ifxmips/ifxmips_des.c +++ /dev/null @@ -1,893 +0,0 @@ -/* - * 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. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA. - * - * Copyright (C) 2010 Ralph Hempel <ralph.hempel@lantiq.com> - * Copyright (C) 2009 Mohammad Firdaus - */ - -/*! - \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" - -/* DMA specific header and variables */ -#ifdef CONFIG_CRYPTO_DEV_IFXMIPS_DMA -#include "ifxmips_deu_dma.h" -#include <asm/ifx/irq.h> -#include <asm/ifx/ifx_dma_core.h> -extern _ifx_deu_device ifx_deu[1]; -extern u32 *des_buff_in; -extern u32 *des_buff_out; -#ifndef CONFIG_CRYPTO_DEV_IFXMIPS_POLL_DMA -#define CONFIG_CRYPTO_DEV_IFXMIPS_POLL_DMA -#endif /* CONFIG_CRYPTO_DEV_IFXMIPS_POLL_DMA */ -#endif /* CONFIG_CRYPTO_DEV_IFXMIPS_DMA */ - -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) - -/* Preprocessor declarations */ -#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); - -#ifndef CONFIG_CRYPTO_DEV_IFXMIPS_DMA -void ifx_deu_des (void *ctx_arg, u8 *out_arg, const u8 *in_arg, - u8 *iv_arg, u32 nbytes, int encdec, int mode); -#else -void ifx_deu_des_core (void *ctx_arg, u8 *out_arg, const u8 *in_arg, - u8 *iv_arg, u32 nbytes, int encdec, int mode); -#endif /* CONFIG_CRYPTO_DEV_IFXMIPS_DMA */ - -struct des_ctx { - int controlr_M; - int key_length; - u8 iv[DES_BLOCK_SIZE]; - u32 expkey[DES3_EDE_EXPKEY_WORDS]; -}; - -extern int disable_deudma; - -/*! \fn int des_setkey(struct crypto_tfm *tfm, const u8 *key, unsigned int key_len) - * \ingroup IFX_DES_FUNCTIONS - * \brief sets DES key - * \param tfm linux crypto algo transform - * \param key input key - * \param key_len key length -*/ -int des_setkey(struct crypto_tfm *tfm, const u8 *key, - unsigned int key_len) -{ - struct des_ctx *ctx = crypto_tfm_ctx(tfm); - - DPRINTF(0, "ctx @%p, key_len %d %d\n", ctx, key_len); - - ctx->controlr_M = 0; /* des */ - ctx->key_length = key_len; - - memcpy ((u8 *) (ctx->expkey), key, key_len); - - return 0; -} - -#ifndef CONFIG_CRYPTO_DEV_IFXMIPS_DMA -/*! \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) -#else -/*! \fn void ifx_deu_des_core(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_core (void *ctx_arg, u8 *out_arg, const u8 *in_arg, - u8 *iv_arg, u32 nbytes, int encdec, int mode) -#endif -{ - volatile struct des_t *des = (struct des_t *) DES_3DES_START; - struct des_ctx *dctx = ctx_arg; - u32 *key = dctx->expkey; - ulong flag; - -#ifndef CONFIG_CRYPTO_DEV_IFXMIPS_DMA - int i = 0; - int nblocks = 0; -#else - volatile struct deu_dma_t *dma = (struct deu_dma_t *) IFX_DEU_DMA_CON; - struct dma_device_info *dma_device = ifx_deu[0].dma_device; - //deu_drv_priv_t *deu_priv = (deu_drv_priv_t *)dma_device->priv; - int wlen = 0; - u32 *outcopy = NULL; - u32 *dword_mem_aligned_in = NULL; - -#ifdef CONFIG_CRYPTO_DEV_IFXMIPS_POLL_DMA - u32 timeout = 0; - u32 *out_dma = NULL; -#endif - -#endif - - DPRINTF(0, "ctx @%p, mode %d, encdec %d\n", dctx, mode, encdec); - - CRTCL_SECT_START; - - des->controlr.E_D = !encdec; /* encryption */ - des->controlr.O = mode; /* 0 ECB, 1 CBC, 2 OFB, 3 CFB, 4 CTR */ - des->controlr.SM = 1; /* start after writing input register */ - des->controlr.DAU = 0; /* Disable Automatic Update of init vector */ - des->controlr.ARS = 1; /* Autostart Select - write to IHR */ - - des->controlr.M = dctx->controlr_M; - /* write keys */ - if (dctx->controlr_M == 0) { - /* DES mode */ - des->K1HR = DEU_ENDIAN_SWAP(*((u32 *) key + 0)); - des->K1LR = DEU_ENDIAN_SWAP(*((u32 *) key + 1)); -#ifdef CRYPTO_DEBUG - printk ("key1: %x\n", (*((u32 *) key + 0))); - printk ("key2: %x\n", (*((u32 *) key + 1))); -#endif - } else { - /* 3DES mode (EDE-x) */ - 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; - } - } - - /* write init vector (not required for ECB mode) */ - if (mode > 0) { - des->IVHR = DEU_ENDIAN_SWAP(*(u32 *) iv_arg); - des->IVLR = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 1)); - } - -#ifndef CONFIG_CRYPTO_DEV_IFXMIPS_DMA - 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; - -#ifdef CRYPTO_DEBUG - printk ("ohr: %x\n", (*((u32 *) out_arg + i))); - printk ("olr: %x\n", (*((u32 *) out_arg + 1 + i))); -#endif - } - -#else /* dma mode */ - - /* Prepare Rx buf length used in dma psuedo interrupt */ - //deu_priv->deu_rx_buf = out_arg; - //deu_priv->deu_rx_len = nbytes; - - /* memory alignment issue */ - dword_mem_aligned_in = (u32 *) DEU_DWORD_REORDERING(in_arg, des_buff_in, BUFFER_IN, nbytes); - - dma->controlr.ALGO = 0; //DES - des->controlr.DAU = 0; - dma->controlr.BS = 0; - dma->controlr.EN = 1; - - while (des->controlr.BUS) { - // wait for AES to be ready - }; - - wlen = dma_device_write (dma_device, (u8 *) dword_mem_aligned_in, nbytes, NULL); - if (wlen != nbytes) { - dma->controlr.EN = 0; - CRTCL_SECT_END; - printk (KERN_ERR "[%s %s %d]: dma_device_write fail!\n", __FILE__, __func__, __LINE__); - return; // -EINVAL; - } - - WAIT_DES_DMA_READY(); - -#ifdef CONFIG_CRYPTO_DEV_IFXMIPS_POLL_DMA - - outcopy = (u32 *) DEU_DWORD_REORDERING(out_arg, des_buff_out, BUFFER_OUT, nbytes); - - // polling DMA rx channel - while ((dma_device_read (dma_device, (u8 **) &out_dma, NULL)) == 0) { - timeout++; - - if (timeout >= 333000) { - dma->controlr.EN = 0; - CRTCL_SECT_END; - printk (KERN_ERR "[%s %s %d]: timeout!!\n", __FILE__, __func__, __LINE__); - return; // -EINVAL; - } - } - - WAIT_DES_DMA_READY(); - - DES_MEMORY_COPY(outcopy, out_dma, out_arg, nbytes); - -#else - - CRTCL_SECT_END; /* Sleep and wait for Rx finished */ - DEU_WAIT_EVENT(deu_priv->deu_thread_wait, DEU_EVENT, deu_priv->deu_event_flags); - CRTCL_SECT_START; - -#endif - -#endif /* dma mode */ - - 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 -*/ - -#ifdef CONFIG_CRYPTO_DEV_IFXMIPS_DMA -void ifx_deu_des (void *ctx_arg, u8 *out_arg, const u8 *in_arg, - u8 *iv_arg, u32 nbytes, int encdec, int mode) -{ - u32 remain = nbytes; - u32 inc; - - DPRINTF(0, "\n"); - - while (remain > 0) - { - if (remain >= DEU_MAX_PACKET_SIZE) - { - inc = DEU_MAX_PACKET_SIZE; - } - else - { - inc = remain; - } - - remain -= inc; - - ifx_deu_des_core(ctx_arg, out_arg, in_arg, iv_arg, inc, encdec, mode); - - out_arg += inc; - in_arg += inc; - } -} -#endif - - -/*! \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) -{ - DPRINTF(0, "ctx @%p\n", ctx); - 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) -{ - DPRINTF(0, "ctx @%p\n", ctx); - 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) -{ - DPRINTF(0, "ctx @%p\n", ctx); - 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) -{ - DPRINTF(0, "ctx @%p\n", ctx); - 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) -{ - DPRINTF(0, "ctx @%p\n", ctx); - 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); - DPRINTF(0, "ctx @%p\n", ctx); - 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); - DPRINTF(0, "ctx @%p\n", ctx); - 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 key_len) -{ - struct des_ctx *ctx = crypto_tfm_ctx(tfm); - - DPRINTF(0, "ctx @%p, key_len %d\n", ctx, key_len); - - ctx->controlr_M = key_len / 8 + 1; // 3DES EDE1 / EDE2 / EDE3 Mode - ctx->key_length = key_len; - - memcpy ((u8 *) (ctx->expkey), key, key_len); - - 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; - - DPRINTF(0, "ctx @%p\n", ctx); - - 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(0, "ctx @%p\n", ctx); - - 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(0, "ctx @%p\n", ctx); - - blkcipher_walk_init(&walk, dst, src, nbytes); - err = blkcipher_walk_virt(desc, &walk); - - while ((nbytes = walk.nbytes)) { - u8 *iv = walk.iv; - //printk("iv = %08x\n", *(u32 *)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(0, "ctx @%p\n", ctx); - - blkcipher_walk_init(&walk, dst, src, nbytes); - err = blkcipher_walk_virt(desc, &walk); - - while ((nbytes = walk.nbytes)) { - u8 *iv = walk.iv; - //printk("iv = %08x\n", *(u32 *)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 = 0; - - 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; - -#ifdef CONFIG_CRYPTO_DEV_IFXMIPS_DMA - if (ALLOCATE_MEMORY(BUFFER_IN, DES_ALGO) < 0) { - printk(KERN_ERR "[%s %s %d]: malloc memory fail!\n", __FILE__, __func__, __LINE__); - goto cbc_des3_ede_err; - } - if (ALLOCATE_MEMORY(BUFFER_OUT, DES_ALGO) < 0) { - printk(KERN_ERR "[%s %s %d]: malloc memory fail!\n", __FILE__, __func__, __LINE__); - goto cbc_des3_ede_err; - } -#endif - - printk (KERN_NOTICE "IFX DEU DES initialized %s.\n", 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); - -#ifdef CONFIG_CRYPTO_DEV_IFXMIPS_DMA - FREE_MEMORY(des_buff_in); - FREE_MEMORY(des_buff_out); -#endif /* CONFIG_CRYPTO_DEV_IFXMIPS_DMA_DANUBE */ -} |