+++ /dev/null
-/*
- * 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 module
-*/
-
-/*!
- \file ifxmips_aes.c
- \ingroup IFX_DEU
- \brief AES Encryption Driver main file
-*/
-
-/*!
- \defgroup IFX_AES_FUNCTIONS IFX_AES_FUNCTIONS
- \ingroup IFX_DEU
- \brief IFX AES driver 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 related header and variables */
-#ifdef CONFIG_CRYPTO_DEV_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 *aes_buff_in;
-extern u32 *aes_buff_out;
-#ifndef CONFIG_CRYPTO_DEV_POLL_DMA
-#define CONFIG_CRYPTO_DEV_POLL_DMA
-#endif
-#endif /* CONFIG_CRYPTO_DEV_DMA */
-
-spinlock_t aes_lock;
-#define CRTCL_SECT_INIT spin_lock_init(&aes_lock)
-#define CRTCL_SECT_START spin_lock_irqsave(&aes_lock, flag)
-#define CRTCL_SECT_END spin_unlock_irqrestore(&aes_lock, flag)
-
-/* Definition of constants */
-#define AES_START IFX_AES_CON
-#define AES_MIN_KEY_SIZE 16
-#define AES_MAX_KEY_SIZE 32
-#define AES_BLOCK_SIZE 16
-#define CTR_RFC3686_NONCE_SIZE 4
-#define CTR_RFC3686_IV_SIZE 8
-#define CTR_RFC3686_MAX_KEY_SIZE (AES_MAX_KEY_SIZE + CTR_RFC3686_NONCE_SIZE)
-
-/* Function decleration */
-int aes_chip_init(void);
-u32 endian_swap(u32 input);
-u32 input_swap(u32 input);
-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);
-int aes_memory_allocate(int value);
-int des_memory_allocate(int value);
-void memory_release(u32 *addr);
-
-#ifndef CONFIG_CRYPTO_DEV_DMA
-extern void ifx_deu_aes (void *ctx_arg, uint8_t *out_arg, const uint8_t *in_arg,
- uint8_t *iv_arg, size_t nbytes, int encdec, int mode);
-#else
-extern void ifx_deu_aes_core (void *ctx_arg, uint8_t *out_arg, const uint8_t *in_arg,
- uint8_t *iv_arg, size_t nbytes, int encdec, int mode);
-#endif
-/* End of function decleration */
-
-struct aes_ctx {
- int key_length;
- u32 buf[AES_MAX_KEY_SIZE];
- u8 nonce[CTR_RFC3686_NONCE_SIZE];
-};
-
-
-extern int disable_deudma;
-
-
-/*! \fn int aes_set_key (struct crypto_tfm *tfm, const uint8_t *in_key, unsigned int key_len)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief sets the AES keys
- * \param tfm linux crypto algo transform
- * \param in_key input key
- * \param key_len key lengths of 16, 24 and 32 bytes supported
- * \return -EINVAL - bad key length, 0 - SUCCESS
-*/
-int aes_set_key (struct crypto_tfm *tfm, const u8 *in_key, unsigned int key_len)
-{
- struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
- u32 *flags = &tfm->crt_flags;
-
- DPRINTF(0, "ctx @%p, key_len %d\n", ctx, key_len);
-
- if (key_len != 16 && key_len != 24 && key_len != 32) {
- *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
- return -EINVAL;
- }
-
- ctx->key_length = key_len;
- memcpy ((u8 *) (ctx->buf), in_key, key_len);
-
- return 0;
-}
-
-
-#ifndef CONFIG_CRYPTO_DEV_DMA
-/*! \fn void ifx_deu_aes (void *ctx_arg, u8 *out_arg, const u8 *in_arg, u8 *iv_arg, size_t nbytes, int encdec, int mode)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief main interface to AES 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, ctr
- *
-*/
-void ifx_deu_aes (void *ctx_arg, u8 *out_arg, const u8 *in_arg,
- u8 *iv_arg, size_t nbytes, int encdec, int mode)
-#else
-
-/*! \fn void ifx_deu_aes_core (void *ctx_arg, u8 *out_arg, const u8 *in_arg, u8 *iv_arg, size_t nbytes, int encdec, int mode)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief main interface to AES 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, ctr
- *
-*/
-void ifx_deu_aes_core (void *ctx_arg, u8 *out_arg, const u8 *in_arg,
- u8 *iv_arg, size_t nbytes, int encdec, int mode)
-#endif
-
-{
- /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
- volatile struct aes_t *aes = (volatile struct aes_t *) AES_START;
- struct aes_ctx *ctx = (struct aes_ctx *)ctx_arg;
- u32 *in_key = ctx->buf;
- ulong flag;
- /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ */
- int key_len = ctx->key_length;
-
-#ifndef CONFIG_CRYPTO_DEV_DMA
- int i = 0;
- int byte_cnt = nbytes;
-
-#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_POLL_DMA
- u32 timeout = 0;
- u32 *out_dma = NULL;
-#endif
-
-#endif
-
- DPRINTF(0, "ctx @%p, mode %d, encdec %d\n", ctx, mode, encdec);
-
- CRTCL_SECT_START;
-
- /* 128, 192 or 256 bit key length */
- aes->controlr.K = key_len / 8 - 2;
- if (key_len == 128 / 8) {
- aes->K3R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 0));
- aes->K2R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 1));
- aes->K1R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 2));
- aes->K0R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 3));
- }
- else if (key_len == 192 / 8) {
- aes->K5R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 0));
- aes->K4R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 1));
- aes->K3R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 2));
- aes->K2R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 3));
- aes->K1R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 4));
- aes->K0R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 5));
- }
- else if (key_len == 256 / 8) {
- aes->K7R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 0));
- aes->K6R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 1));
- aes->K5R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 2));
- aes->K4R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 3));
- aes->K3R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 4));
- aes->K2R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 5));
- aes->K1R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 6));
- aes->K0R = DEU_ENDIAN_SWAP(*((u32 *) in_key + 7));
- }
- else {
- printk (KERN_ERR "[%s %s %d]: Invalid key_len : %d\n", __FILE__, __func__, __LINE__, key_len);
- CRTCL_SECT_END;
- return;// -EINVAL;
- }
-
- /* let HW pre-process DEcryption key in any case (even if
- ENcryption is used). Key Valid (KV) bit is then only
- checked in decryption routine! */
- aes->controlr.PNK = 1;
-
-#ifdef CONFIG_CRYPTO_DEV_DMA
- while (aes->controlr.BUS) {
- // this will not take long
- }
- AES_DMA_MISC_CONFIG();
-#endif
-
- aes->controlr.E_D = !encdec; /* encryption */
- aes->controlr.O = mode; /* 0 ECB 1 CBC 2 OFB 3 CFB 4 CTR */
- aes->controlr.SM = 1; /* start after writing input register */
- aes->controlr.DAU = 0; /* Disable Automatic Update of init vector */
- aes->controlr.ARS = 1; /* Autostart Select - write to IHR */
-
- //aes->controlr.F = 128; //default; only for CFB and OFB modes; change only for customer-specific apps
- if (mode > 0) {
- aes->IV3R = DEU_ENDIAN_SWAP(*(u32 *) iv_arg);
- aes->IV2R = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 1));
- aes->IV1R = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 2));
- aes->IV0R = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 3));
- };
-
-#ifndef CONFIG_CRYPTO_DEV_DMA
- i = 0;
- while (byte_cnt >= 16) {
-
- aes->ID3R = INPUT_ENDIAN_SWAP(*((u32 *) in_arg + (i * 4) + 0));
- aes->ID2R = INPUT_ENDIAN_SWAP(*((u32 *) in_arg + (i * 4) + 1));
- aes->ID1R = INPUT_ENDIAN_SWAP(*((u32 *) in_arg + (i * 4) + 2));
- aes->ID0R = INPUT_ENDIAN_SWAP(*((u32 *) in_arg + (i * 4) + 3)); /* start crypto */
-
- while (aes->controlr.BUS) {
- // this will not take long
- }
-
- *((volatile u32 *) out_arg + (i * 4) + 0) = aes->OD3R;
- *((volatile u32 *) out_arg + (i * 4) + 1) = aes->OD2R;
- *((volatile u32 *) out_arg + (i * 4) + 2) = aes->OD1R;
- *((volatile u32 *) out_arg + (i * 4) + 3) = aes->OD0R;
-
- i++;
- byte_cnt -= 16;
- }
-
-#else // dma
-
- /* 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, aes_buff_in, BUFFER_IN, nbytes);
-
- dma->controlr.ALGO = 1; //AES
- dma->controlr.BS = 0;
- aes->controlr.DAU = 0;
- dma->controlr.EN = 1;
-
- while (aes->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_AES_DMA_READY();
-
-#ifdef CONFIG_CRYPTO_DEV_POLL_DMA
-
- outcopy = (u32 *) DEU_DWORD_REORDERING(out_arg, aes_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_AES_DMA_READY();
-
- AES_MEMORY_COPY(outcopy, out_dma, out_arg, nbytes);
-
-#else // not working at the moment..
- 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
-
- //tc.chen : copy iv_arg back
- if (mode > 0) {
- *((u32 *) iv_arg) = DEU_ENDIAN_SWAP(*((u32 *) iv_arg));
- *((u32 *) iv_arg + 1) = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 1));
- *((u32 *) iv_arg + 2) = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 2));
- *((u32 *) iv_arg + 3) = DEU_ENDIAN_SWAP(*((u32 *) iv_arg + 3));
- }
-
- CRTCL_SECT_END;
-}
-
-/*!
- * \fn int ctr_rfc3686_aes_set_key (struct crypto_tfm *tfm, const uint8_t *in_key, unsigned int key_len)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief sets RFC3686 key
- * \param tfm linux crypto algo transform
- * \param in_key input key
- * \param key_len key lengths of 20, 28 and 36 bytes supported; last 4 bytes is nonce
- * \return 0 - SUCCESS
- * -EINVAL - bad key length
-*/
-int ctr_rfc3686_aes_set_key (struct crypto_tfm *tfm, const uint8_t *in_key, unsigned int key_len)
-{
- struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
- u32 *flags = &tfm->crt_flags;
-
- printk("ctr_rfc3686_aes_set_key in %s\n", __FILE__);
-
- memcpy(ctx->nonce, in_key + (key_len - CTR_RFC3686_NONCE_SIZE),
- CTR_RFC3686_NONCE_SIZE);
-
- key_len -= CTR_RFC3686_NONCE_SIZE; // remove 4 bytes of nonce
-
- if (key_len != 16 && key_len != 24 && key_len != 32) {
- *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
- return -EINVAL;
- }
-
- ctx->key_length = key_len;
-
- memcpy ((u8 *) (ctx->buf), in_key, key_len);
-
- return 0;
-}
-
-/*! \fn void ifx_deu_aes (void *ctx_arg, u8 *out_arg, const u8 *in_arg, u8 *iv_arg, u32 nbytes, int encdec, int mode)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief main interface with deu hardware in DMA mode
- * \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, ctr
-*/
-
-#ifdef CONFIG_CRYPTO_DEV_DMA
-void ifx_deu_aes (void *ctx_arg, u8 * out_arg, const u8 * in_arg,
- u8 * iv_arg, u32 nbytes, int encdec, int mode)
-{
- u32 remain = nbytes;
- u32 inc;
-
- while (remain > 0)
- {
- if (remain >= DEU_MAX_PACKET_SIZE)
- {
- inc = DEU_MAX_PACKET_SIZE;
- }
- else
- {
- inc = remain;
- }
-
- remain -= inc;
-
- ifx_deu_aes_core(ctx_arg, out_arg, in_arg, iv_arg, inc, encdec, mode);
-
- out_arg += inc;
- in_arg += inc;
- }
-
-}
-#endif
-
-//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_aes_ecb (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief sets AES 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_aes_ecb (void *ctx, uint8_t *dst, const uint8_t *src,
- uint8_t *iv, size_t nbytes, int encdec, int inplace)
-{
- ifx_deu_aes (ctx, dst, src, NULL, nbytes, encdec, 0);
-}
-
-/*! \fn void ifx_deu_aes_cbc (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief sets AES 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_aes_cbc (void *ctx, uint8_t *dst, const uint8_t *src,
- uint8_t *iv, size_t nbytes, int encdec, int inplace)
-{
- ifx_deu_aes (ctx, dst, src, iv, nbytes, encdec, 1);
-}
-
-/*! \fn void ifx_deu_aes_ofb (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief sets AES 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_aes_ofb (void *ctx, uint8_t *dst, const uint8_t *src,
- uint8_t *iv, size_t nbytes, int encdec, int inplace)
-{
- ifx_deu_aes (ctx, dst, src, iv, nbytes, encdec, 2);
-}
-
-/*! \fn void ifx_deu_aes_cfb (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief sets AES 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_aes_cfb (void *ctx, uint8_t *dst, const uint8_t *src,
- uint8_t *iv, size_t nbytes, int encdec, int inplace)
-{
- ifx_deu_aes (ctx, dst, src, iv, nbytes, encdec, 3);
-}
-
-/*! \fn void ifx_deu_aes_ctr (void *ctx, uint8_t *dst, const uint8_t *src, uint8_t *iv, size_t nbytes, int encdec, int inplace)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief sets AES 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_aes_ctr (void *ctx, uint8_t *dst, const uint8_t *src,
- uint8_t *iv, size_t nbytes, int encdec, int inplace)
-{
- ifx_deu_aes (ctx, dst, src, iv, nbytes, encdec, 4);
-}
-
-/*! \fn void aes_encrypt (struct crypto_tfm *tfm, uint8_t *out, const uint8_t *in)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief encrypt AES_BLOCK_SIZE of data
- * \param tfm linux crypto algo transform
- * \param out output bytestream
- * \param in input bytestream
-*/
-void aes_encrypt (struct crypto_tfm *tfm, uint8_t *out, const uint8_t *in)
-{
- struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
- ifx_deu_aes (ctx, out, in, NULL, AES_BLOCK_SIZE,
- CRYPTO_DIR_ENCRYPT, 0);
-
-}
-
-/*! \fn void aes_decrypt (struct crypto_tfm *tfm, uint8_t *out, const uint8_t *in)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief decrypt AES_BLOCK_SIZE of data
- * \param tfm linux crypto algo transform
- * \param out output bytestream
- * \param in input bytestream
-*/
-void aes_decrypt (struct crypto_tfm *tfm, uint8_t *out, const uint8_t *in)
-{
- struct aes_ctx *ctx = crypto_tfm_ctx(tfm);
- ifx_deu_aes (ctx, out, in, NULL, AES_BLOCK_SIZE,
- CRYPTO_DIR_DECRYPT, 0);
-}
-
-/*
- * \brief AES function mappings
-*/
-struct crypto_alg ifxdeu_aes_alg = {
- .cra_name = "aes",
- .cra_driver_name = "ifxdeu-aes",
- .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
- .cra_blocksize = AES_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct aes_ctx),
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(ifxdeu_aes_alg.cra_list),
- .cra_u = {
- .cipher = {
- .cia_min_keysize = AES_MIN_KEY_SIZE,
- .cia_max_keysize = AES_MAX_KEY_SIZE,
- .cia_setkey = aes_set_key,
- .cia_encrypt = aes_encrypt,
- .cia_decrypt = aes_decrypt,
- }
- }
-};
-
-/*! \fn int ecb_aes_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief ECB AES 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 ecb_aes_encrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_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 % AES_BLOCK_SIZE);
- ifx_deu_aes_ecb(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- NULL, nbytes, CRYPTO_DIR_ENCRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*! \fn int ecb_aes_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief ECB AES 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_aes_decrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_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 % AES_BLOCK_SIZE);
- ifx_deu_aes_ecb(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- NULL, nbytes, CRYPTO_DIR_DECRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*
- * \brief AES function mappings
-*/
-struct crypto_alg ifxdeu_ecb_aes_alg = {
- .cra_name = "ecb(aes)",
- .cra_driver_name = "ifxdeu-ecb(aes)",
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = AES_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct aes_ctx),
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(ifxdeu_ecb_aes_alg.cra_list),
- .cra_u = {
- .blkcipher = {
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- .setkey = aes_set_key,
- .encrypt = ecb_aes_encrypt,
- .decrypt = ecb_aes_decrypt,
- }
- }
-};
-
-
-/*! \fn int cbc_aes_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief CBC AES 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_aes_encrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_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)) {
- u8 *iv = walk.iv;
- nbytes -= (nbytes % AES_BLOCK_SIZE);
- ifx_deu_aes_cbc(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- iv, nbytes, CRYPTO_DIR_ENCRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*! \fn int cbc_aes_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief CBC AES 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_aes_decrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_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)) {
- u8 *iv = walk.iv;
- nbytes -= (nbytes % AES_BLOCK_SIZE);
- ifx_deu_aes_cbc(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- iv, nbytes, CRYPTO_DIR_DECRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*
- * \brief AES function mappings
-*/
-struct crypto_alg ifxdeu_cbc_aes_alg = {
- .cra_name = "cbc(aes)",
- .cra_driver_name = "ifxdeu-cbc(aes)",
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = AES_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct aes_ctx),
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(ifxdeu_cbc_aes_alg.cra_list),
- .cra_u = {
- .blkcipher = {
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .setkey = aes_set_key,
- .encrypt = cbc_aes_encrypt,
- .decrypt = cbc_aes_decrypt,
- }
- }
-};
-
-
-/*! \fn int ctr_basic_aes_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief Counter mode AES 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 ctr_basic_aes_encrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_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)) {
- u8 *iv = walk.iv;
- nbytes -= (nbytes % AES_BLOCK_SIZE);
- ifx_deu_aes_ctr(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- iv, nbytes, CRYPTO_DIR_ENCRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*! \fn int ctr_basic_aes_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief Counter mode AES 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 ctr_basic_aes_decrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_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)) {
- u8 *iv = walk.iv;
- nbytes -= (nbytes % AES_BLOCK_SIZE);
- ifx_deu_aes_ctr(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- iv, nbytes, CRYPTO_DIR_DECRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*
- * \brief AES function mappings
-*/
-struct crypto_alg ifxdeu_ctr_basic_aes_alg = {
- .cra_name = "ctr(aes)",
- .cra_driver_name = "ifxdeu-ctr(aes)",
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = AES_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct aes_ctx),
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(ifxdeu_ctr_basic_aes_alg.cra_list),
- .cra_u = {
- .blkcipher = {
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .setkey = aes_set_key,
- .encrypt = ctr_basic_aes_encrypt,
- .decrypt = ctr_basic_aes_decrypt,
- }
- }
-};
-
-
-/*! \fn int ctr_rfc3686_aes_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief Counter mode AES (rfc3686) 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 ctr_rfc3686_aes_encrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- struct blkcipher_walk walk;
- int err;
- u8 rfc3686_iv[16];
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt(desc, &walk);
-
- /* set up counter block */
- memcpy(rfc3686_iv, ctx->nonce, CTR_RFC3686_NONCE_SIZE);
- memcpy(rfc3686_iv + CTR_RFC3686_NONCE_SIZE, walk.iv, CTR_RFC3686_IV_SIZE);
-
- /* initialize counter portion of counter block */
- *(__be32 *)(rfc3686_iv + CTR_RFC3686_NONCE_SIZE + CTR_RFC3686_IV_SIZE) =
- cpu_to_be32(1);
-
- while ((nbytes = walk.nbytes)) {
- nbytes -= (nbytes % AES_BLOCK_SIZE);
- ifx_deu_aes_ctr(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- rfc3686_iv, nbytes, CRYPTO_DIR_ENCRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*! \fn int ctr_rfc3686_aes_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int nbytes)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief Counter mode AES (rfc3686) 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 ctr_rfc3686_aes_decrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes)
-{
- struct aes_ctx *ctx = crypto_blkcipher_ctx(desc->tfm);
- struct blkcipher_walk walk;
- int err;
- u8 rfc3686_iv[16];
-
- blkcipher_walk_init(&walk, dst, src, nbytes);
- err = blkcipher_walk_virt(desc, &walk);
-
- /* set up counter block */
- memcpy(rfc3686_iv, ctx->nonce, CTR_RFC3686_NONCE_SIZE);
- memcpy(rfc3686_iv + CTR_RFC3686_NONCE_SIZE, walk.iv, CTR_RFC3686_IV_SIZE);
-
- /* initialize counter portion of counter block */
- *(__be32 *)(rfc3686_iv + CTR_RFC3686_NONCE_SIZE + CTR_RFC3686_IV_SIZE) =
- cpu_to_be32(1);
-
- while ((nbytes = walk.nbytes)) {
- nbytes -= (nbytes % AES_BLOCK_SIZE);
- ifx_deu_aes_ctr(ctx, walk.dst.virt.addr, walk.src.virt.addr,
- rfc3686_iv, nbytes, CRYPTO_DIR_DECRYPT, 0);
- nbytes &= AES_BLOCK_SIZE - 1;
- err = blkcipher_walk_done(desc, &walk, nbytes);
- }
-
- return err;
-}
-
-/*
- * \brief AES function mappings
-*/
-struct crypto_alg ifxdeu_ctr_rfc3686_aes_alg = {
- .cra_name = "rfc3686(ctr(aes))",
- .cra_driver_name = "ifxdeu-ctr-rfc3686(aes)",
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = AES_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct aes_ctx),
- .cra_type = &crypto_blkcipher_type,
- .cra_module = THIS_MODULE,
- .cra_list = LIST_HEAD_INIT(ifxdeu_ctr_rfc3686_aes_alg.cra_list),
- .cra_u = {
- .blkcipher = {
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = CTR_RFC3686_MAX_KEY_SIZE,
- .ivsize = CTR_RFC3686_IV_SIZE,
- .setkey = ctr_rfc3686_aes_set_key,
- .encrypt = ctr_rfc3686_aes_encrypt,
- .decrypt = ctr_rfc3686_aes_decrypt,
- }
- }
-};
-
-
-/*! \fn int __init ifxdeu_init_aes (void)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief function to initialize AES driver
- * \return ret
-*/
-int __init ifxdeu_init_aes (void)
-{
- int ret;
-
- if ((ret = crypto_register_alg(&ifxdeu_aes_alg)))
- goto aes_err;
-
- if ((ret = crypto_register_alg(&ifxdeu_ecb_aes_alg)))
- goto ecb_aes_err;
-
- if ((ret = crypto_register_alg(&ifxdeu_cbc_aes_alg)))
- goto cbc_aes_err;
-
- if ((ret = crypto_register_alg(&ifxdeu_ctr_basic_aes_alg)))
- goto ctr_basic_aes_err;
-
- if ((ret = crypto_register_alg(&ifxdeu_ctr_rfc3686_aes_alg)))
- goto ctr_rfc3686_aes_err;
-
- aes_chip_init ();
-
- CRTCL_SECT_INIT;
-
-#ifdef CONFIG_CRYPTO_DEV_DMA
- if (ALLOCATE_MEMORY(BUFFER_IN, AES_ALGO) < 0) {
- printk(KERN_ERR "[%s %s %d]: malloc memory fail!\n", __FILE__, __func__, __LINE__);
- goto ctr_rfc3686_aes_err;
- }
- if (ALLOCATE_MEMORY(BUFFER_OUT, AES_ALGO) < 0) {
- printk(KERN_ERR "[%s %s %d]: malloc memory fail!\n", __FILE__, __func__, __LINE__);
- goto ctr_rfc3686_aes_err;
- }
-#endif
-
- printk (KERN_NOTICE "IFX DEU AES initialized %s.\n", disable_deudma ? "" : " (DMA)");
- return ret;
-
-ctr_rfc3686_aes_err:
- crypto_unregister_alg(&ifxdeu_ctr_rfc3686_aes_alg);
- printk (KERN_ERR "IFX ctr_rfc3686_aes initialization failed!\n");
- return ret;
-ctr_basic_aes_err:
- crypto_unregister_alg(&ifxdeu_ctr_basic_aes_alg);
- printk (KERN_ERR "IFX ctr_basic_aes initialization failed!\n");
- return ret;
-cbc_aes_err:
- crypto_unregister_alg(&ifxdeu_cbc_aes_alg);
- printk (KERN_ERR "IFX cbc_aes initialization failed!\n");
- return ret;
-ecb_aes_err:
- crypto_unregister_alg(&ifxdeu_ecb_aes_alg);
- printk (KERN_ERR "IFX aes initialization failed!\n");
- return ret;
-aes_err:
- printk(KERN_ERR "IFX DEU AES initialization failed!\n");
- return ret;
-}
-
-/*! \fn void __exit ifxdeu_fini_aes (void)
- * \ingroup IFX_AES_FUNCTIONS
- * \brief unregister aes driver
-*/
-void __exit ifxdeu_fini_aes (void)
-{
- crypto_unregister_alg (&ifxdeu_aes_alg);
- crypto_unregister_alg (&ifxdeu_ecb_aes_alg);
- crypto_unregister_alg (&ifxdeu_cbc_aes_alg);
- crypto_unregister_alg (&ifxdeu_ctr_basic_aes_alg);
- crypto_unregister_alg (&ifxdeu_ctr_rfc3686_aes_alg);
-
-#ifdef CONFIG_CRYPTO_DEV_DMA
- FREE_MEMORY(aes_buff_in);
- FREE_MEMORY(aes_buff_out);
-#endif
-
-}
-
projects / openwrt / svn-archive / archive.git / blobdiff