diff options
Diffstat (limited to 'package/platform/lantiq/ltq-deu/src/ifxmips_async_des.c')
| -rw-r--r-- | package/platform/lantiq/ltq-deu/src/ifxmips_async_des.c | 954 |
1 files changed, 0 insertions, 954 deletions
diff --git a/package/platform/lantiq/ltq-deu/src/ifxmips_async_des.c b/package/platform/lantiq/ltq-deu/src/ifxmips_async_des.c deleted file mode 100644 index 9c593aeb49..0000000000 --- a/package/platform/lantiq/ltq-deu/src/ifxmips_async_des.c +++ /dev/null @@ -1,954 +0,0 @@ -/****************************************************************************** -** -** FILE NAME : ifxmips_async_des.c -** PROJECT : IFX UEIP -** MODULES : DEU Module -** -** DATE : October 11, 2010 -** AUTHOR : Mohammad Firdaus -** DESCRIPTION : Data Encryption Unit Driver for DES Algorithm -** COPYRIGHT : Copyright (c) 2010 -** 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 -** 11, Oct 2010 Mohammad Firdaus Kernel Port incl. Async. Ablkcipher mode -** 21,March 2011 Mohammad Firdaus Changes for Kernel 2.6.32 and IPSec integration -*******************************************************************************/ -/*! - \defgroup IFX_DEU IFX_DEU_DRIVERS - \ingroup API - \brief ifx DEU driver module -*/ - -/*! - \file ifxmips_async_des.c - \ingroup IFX_DEU - \brief DES Encryption Driver main file -*/ - -/*! - \defgroup IFX_DES_FUNCTIONS IFX_DES_FUNCTIONS - \ingroup IFX_DEU - \brief IFX DES driver Functions -*/ - -#include <linux/wait.h> -#include <linux/crypto.h> -#include <linux/kernel.h> -#include <linux/interrupt.h> -#include <linux/spinlock.h> -#include <linux/list.h> -#include <crypto/ctr.h> -#include <crypto/aes.h> -#include <crypto/algapi.h> -#include <crypto/scatterwalk.h> - -#include <asm/ifx/ifx_regs.h> -#include <asm/ifx/ifx_types.h> -#include <asm/ifx/common_routines.h> -#include <asm/ifx/irq.h> -#include <asm/ifx/ifx_pmu.h> -#include <asm/ifx/ifx_gpio.h> -#include <asm/kmap_types.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 */ - -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 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); - -static int lq_deu_des_core (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]; -}; - - -static int disable_multiblock = 0; -#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) -module_param(disable_multiblock, int, 0); -#else -MODULE_PARM_DESC(disable_multiblock, "Disable encryption of whole multiblock buffers"); -#endif - -static int disable_deudma = 1; - -struct des_container { - u8 *iv; - u8 *dst_buf; - u8 *src_buf; - int mode; - int encdec; - int complete; - int flag; - - u32 bytes_processed; - u32 nbytes; - - struct ablkcipher_request arequest; -}; - -des_priv_t *des_queue; -extern deu_drv_priv_t deu_dma_priv; - -void hexdump1(unsigned char *buf, unsigned int len) -{ - print_hex_dump(KERN_CONT, "", DUMP_PREFIX_OFFSET, - 16, 1, - buf, len, false); -} - - -/*! \fn int lq_des_setkey(struct crypto_ablkcipher *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 -*/ -static int lq_des_setkey(struct crypto_ablkcipher *tfm, const u8 *key, - unsigned int keylen) -{ - struct des_ctx *dctx = crypto_ablkcipher_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 int lq_des3_ede_setkey(struct crypto_ablkcipher *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 -*/ - -static int lq_des3_ede_setkey(struct crypto_ablkcipher *tfm, const u8 *in_key, - unsigned int keylen) -{ - struct des_ctx *dctx = crypto_ablkcipher_ctx(tfm); - - //printk("setkey in %s\n", __FILE__); - - dctx->controlr_M = keylen/8 + 1; // des - dctx->key_length = keylen; - - memcpy ((u8 *) (dctx->expkey), in_key, keylen); - - return 0; -} - -/*! \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 -*/ - -static int lq_deu_des_core (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 -EINVAL; - } - } - - 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)); - }; - - /* memory alignment issue */ - dword_mem_aligned_in = (u32 *) DEU_DWORD_REORDERING(in_arg, des_buff_in, BUFFER_IN, nbytes); - - deu_priv->deu_rx_buf = (u32 *) out_arg; - deu_priv->deu_rx_len = nbytes; - - dma->controlr.ALGO = 0; //DES - des->controlr.DAU = 0; - dma->controlr.BS = 0; - dma->controlr.EN = 1; - - while (des->controlr.BUS) { - }; - - 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; - } - - - /* Prepare Rx buf length used in dma psuedo interrupt */ - outcopy = (u32 *) DEU_DWORD_REORDERING(out_arg, des_buff_out, BUFFER_OUT, nbytes); - deu_priv->outcopy = outcopy; - deu_priv->event_src = DES_ASYNC_EVENT; - - if (mode > 0) { - *(u32 *) iv_arg = DEU_ENDIAN_SWAP(des->IVHR); - *((u32 *) iv_arg + 1) = DEU_ENDIAN_SWAP(des->IVLR); - }; - - CRTCL_SECT_END; - - return -EINPROGRESS; - -} - -static int count_sgs(struct scatterlist *sl, unsigned int total_bytes) -{ - int i = 0; - - do { - total_bytes -= sl[i].length; - i++; - - } while (total_bytes > 0); - - return i; -} - -/* \fn static inline struct des_container *des_container_cast ( - * struct scatterlist *dst) - * \ingroup IFX_DES_FUNCTIONS - * \brief Locate the structure des_container in memory. - * \param *areq Pointer to memory location where ablkcipher_request is located - * \return *des_cointainer The function pointer to des_container -*/ - -static inline struct des_container *des_container_cast( - struct ablkcipher_request *areq) -{ - return container_of(areq, struct des_container, arequest); -} - -/* \fn static void lq_sg_complete(struct des_container *des_con) - * \ingroup IFX_DES_FUNCTIONS - * \brief Free the used up memory after encryt/decrypt. -*/ - -static void lq_sg_complete(struct des_container *des_con) -{ - unsigned long queue_flag; - - spin_lock_irqsave(&des_queue->lock, queue_flag); - kfree(des_con); - spin_unlock_irqrestore(&des_queue->lock, queue_flag); -} - -/* \fn void lq_sg_init(struct scatterlist *src, - * struct scatterlist *dst) - * \ingroup IFX_DES_FUNCTIONS - * \brief Maps the scatterlists into a source/destination page. - * \param *src Pointer to the source scatterlist - * \param *dst Pointer to the destination scatterlist -*/ - -static void lq_sg_init(struct des_container *des_con, struct scatterlist *src, - struct scatterlist *dst) -{ - struct page *dst_page, *src_page; - - src_page = sg_virt(src); - des_con->src_buf = (char *) src_page; - - dst_page = sg_virt(dst); - des_con->dst_buf = (char *) dst_page; -} - -/* \fn static int process_next_packet(struct des_container *des_con, struct ablkcipher_request *areq, - * int state) - * \ingroup IFX_DES_FUNCTIONS - * \brief Process the next packet after dequeuing the packet from crypto queue - * \param *des_con Pointer to DES container structure - * \param *areq Pointer to ablkcipher_request container - * \param state State of the packet (scattered packet or new packet to be processed) - * \return -EINVAL: DEU failure, -EINPROGRESS: DEU encrypt/decrypt in progress, 1: no scatterlist left -*/ - -static int process_next_packet(struct des_container *des_con, struct ablkcipher_request *areq, - int state) -{ - u8 *iv; - int mode, encdec, err = -EINVAL; - u32 remain, inc, chunk_size, nbytes; - struct scatterlist *src = NULL; - struct scatterlist *dst = NULL; - struct crypto_ablkcipher *cipher; - struct des_ctx *ctx; - unsigned long queue_flag; - - spin_lock_irqsave(&des_queue->lock, queue_flag); - - mode = des_con->mode; - encdec = des_con->encdec; - iv = des_con->iv; - - if (state & PROCESS_SCATTER) { - src = scatterwalk_sg_next(areq->src); - dst = scatterwalk_sg_next(areq->dst); - - if (!src || !dst) { - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - return 1; - } - } - else if (state & PROCESS_NEW_PACKET) { - src = areq->src; - dst = areq->dst; - } - - remain = des_con->bytes_processed; - chunk_size = src->length; - - //printk("debug ln: %d, func: %s, reqsize: %d, scattersize: %d\n", -// __LINE__, __func__, areq->nbytes, chunk_size); - - if (remain > DEU_MAX_PACKET_SIZE) - inc = DEU_MAX_PACKET_SIZE; - else if(remain > chunk_size) - inc = chunk_size; - else - inc = remain; - - remain -= inc; - des_con->nbytes = inc; - - if (state & PROCESS_SCATTER) { - des_con->src_buf += des_con->nbytes; - des_con->dst_buf += des_con->nbytes; - } - - lq_sg_init(des_con, src, dst); - - nbytes = des_con->nbytes; - - cipher = crypto_ablkcipher_reqtfm(areq); - ctx = crypto_ablkcipher_ctx(cipher); - - if (des_queue->hw_status == DES_IDLE) { - des_queue->hw_status = DES_STARTED; - } - - des_con->bytes_processed -= des_con->nbytes; - err = ablkcipher_enqueue_request(&des_queue->list, &des_con->arequest); - if (err == -EBUSY) { - printk("Failed to enqueue request, ln: %d, err: %d\n", - __LINE__, err); - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - return -EINVAL; - } - - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - err = lq_deu_des_core(ctx, des_con->dst_buf, des_con->src_buf, iv, nbytes, encdec, mode); - - return err; -} - -/* \fn static void process_queue(unsigned long data) - * \ingroup IFX_DES_FUNCTIONS - * \brief Process next packet in queue - * \param data not used - * \return -*/ - -static void process_queue(unsigned long data) -{ - DEU_WAKEUP_EVENT(deu_dma_priv.deu_thread_wait, DES_ASYNC_EVENT, - deu_dma_priv.des_event_flags); - -} - -/* \fn static int des_crypto_thread (void *data) - * \ingroup IFX_DES_FUNCTIONS - * \brief DES thread that handles crypto requests from upper layer & DMA - * \param *data Not used - * \return -EINVAL: DEU failure, -EBUSY: DEU HW busy, 0: exit thread -*/ - -static int des_crypto_thread(void *data) -{ - struct des_container *des_con = NULL; - struct ablkcipher_request *areq = NULL; - int err; - unsigned long queue_flag; - - daemonize("lq_des_thread"); - - while (1) - { - DEU_WAIT_EVENT(deu_dma_priv.deu_thread_wait, DES_ASYNC_EVENT, - deu_dma_priv.des_event_flags); - spin_lock_irqsave(&des_queue->lock, queue_flag); - - /* wait to prevent starting a crypto session before - * exiting the dma interrupt thread. - */ - - if (des_queue->hw_status == DES_STARTED) { - areq = ablkcipher_dequeue_request(&des_queue->list); - des_con = des_container_cast(areq); - des_queue->hw_status = DES_BUSY; - } - else if (des_queue->hw_status == DES_IDLE) { - areq = ablkcipher_dequeue_request(&des_queue->list); - des_con = des_container_cast(areq); - des_queue->hw_status = DES_STARTED; - } - else if (des_queue->hw_status == DES_BUSY) { - areq = ablkcipher_dequeue_request(&des_queue->list); - des_con = des_container_cast(areq); - } - else if (des_queue->hw_status == DES_COMPLETED) { - areq->base.complete(&areq->base, 0); - lq_sg_complete(des_con); - des_queue->hw_status = DES_IDLE; - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - return 0; - } - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - - if ((des_con->bytes_processed == 0)) { - goto des_done; - } - - if (!des_con) { - goto des_done; - } - - if (des_con->flag & PROCESS_NEW_PACKET) { - des_con->flag = PROCESS_SCATTER; - err = process_next_packet(des_con, areq, PROCESS_NEW_PACKET); - } - else - err = process_next_packet(des_con, areq, PROCESS_SCATTER); - - if (err == -EINVAL) { - areq->base.complete(&areq->base, err); - lq_sg_complete(des_con); - printk("src/dst returned -EINVAL in func: %s\n", __func__); - } - else if (err > 0) { - printk("src/dst returned zero in func: %s\n", __func__); - goto des_done; - } - - continue; - -des_done: - //printk("debug line - %d, func: %s, qlen: %d\n", __LINE__, __func__, des_queue->list.qlen); - areq->base.complete(&areq->base, 0); - lq_sg_complete(des_con); - - spin_lock_irqsave(&des_queue->lock, queue_flag); - if (des_queue->list.qlen > 0) { - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - tasklet_schedule(&des_queue->des_task); - } - else { - des_queue->hw_status = DES_IDLE; - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - } - } // while(1) - - return 0; - -} - -/* \fn static int lq_des_queue_mgr(struct des_ctx *ctx, struct ablkcipher_request *areq, - u8 *iv, int encdec, int mode) - * \ingroup IFX_DES_FUNCTIONS - * \brief starts the process of queuing DEU requests - * \param *ctx crypto algo contax - * \param *areq Pointer to the balkcipher requests - * \param *iv Pointer to intput vector location - * \param dir Encrypt/Decrypt - * \mode The mode DES algo is running - * \return 0 if success -*/ - -static int lq_queue_mgr(struct des_ctx *ctx, struct ablkcipher_request *areq, - u8 *iv, int encdec, int mode) -{ - int err = -EINVAL; - unsigned long queue_flag; - struct scatterlist *src = areq->src; - struct scatterlist *dst = areq->dst; - struct des_container *des_con = NULL; - u32 remain, inc, nbytes = areq->nbytes; - u32 chunk_bytes = src->length; - - des_con = (struct des_container *)kmalloc(sizeof(struct des_container), - GFP_KERNEL); - - if (!(des_con)) { - printk("Cannot allocate memory for AES container, fn %s, ln %d\n", - __func__, __LINE__); - return -ENOMEM; - } - - /* DES encrypt/decrypt mode */ - if (mode == 5) { - nbytes = DES_BLOCK_SIZE; - chunk_bytes = DES_BLOCK_SIZE; - mode = 0; - } - - des_con->bytes_processed = nbytes; - des_con->arequest = (*areq); - remain = nbytes; - - //printk("debug - Line: %d, func: %s, reqsize: %d, scattersize: %d\n", - // __LINE__, __func__, nbytes, chunk_bytes); - - if (remain > DEU_MAX_PACKET_SIZE) - inc = DEU_MAX_PACKET_SIZE; - else if(remain > chunk_bytes) - inc = chunk_bytes; - else - inc = remain; - - remain -= inc; - lq_sg_init(des_con, src, dst); - - if (remain <= 0 ) { - des_con->complete = 1; - } - else - des_con->complete = 0; - - des_con->nbytes = inc; - des_con->iv = iv; - des_con->mode = mode; - des_con->encdec = encdec; - - spin_lock_irqsave(&des_queue->lock, queue_flag); - - if (des_queue->hw_status == DES_STARTED || des_queue->hw_status == DES_BUSY || - des_queue->list.qlen > 0) { - - des_con->flag = PROCESS_NEW_PACKET; - err = ablkcipher_enqueue_request(&des_queue->list, &des_con->arequest); - if (err == -EBUSY) { - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - printk("Fail to enqueue ablkcipher request ln: %d, err: %d\n", - __LINE__, err); - return err; - } - - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - return -EINPROGRESS; - - } - else if (des_queue->hw_status == DES_IDLE) { - des_queue->hw_status = DES_STARTED; - } - - des_con->flag = PROCESS_SCATTER; - des_con->bytes_processed -= des_con->nbytes; - - err = ablkcipher_enqueue_request(&des_queue->list, &des_con->arequest); - if (err == -EBUSY) { - printk("Fail to enqueue ablkcipher request ln: %d, err: %d\n", - __LINE__, err); - - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - return err; - } - - spin_unlock_irqrestore(&des_queue->lock, queue_flag); - return lq_deu_des_core(ctx, des_con->dst_buf, des_con->src_buf, iv, inc, encdec, mode); - -} - -/* \fn static int lq_des_encrypt(struct ablkcipher_request *areq) - * \ingroup IFX_DES_FUNCTIONS - * \brief Decrypt function for DES algo - * \param *areq Pointer to ablkcipher request in memory - * \return 0 is success, -EINPROGRESS if encryting, EINVAL if failure -*/ - -static int lq_des_encrypt(struct ablkcipher_request *areq) -{ - struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); - struct des_ctx *ctx = crypto_ablkcipher_ctx(cipher); - - return lq_queue_mgr(ctx, areq, NULL, CRYPTO_DIR_ENCRYPT, 5); - -} - -/* \fn static int lq_des_decrypt(struct ablkcipher_request *areq) - * \ingroup IFX_DES_FUNCTIONS - * \brief Decrypt function for DES algo - * \param *areq Pointer to ablkcipher request in memory - * \return 0 is success, -EINPROGRESS if encryting, EINVAL if failure -*/ - -static int lq_des_decrypt(struct ablkcipher_request *areq) -{ - struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); - struct des_ctx *ctx = crypto_ablkcipher_ctx(cipher); - - return lq_queue_mgr(ctx, areq, NULL, CRYPTO_DIR_DECRYPT, 5); -} - -/* \fn static int lq_ecb_des_encrypt(struct ablkcipher_request *areq) - * \ingroup IFX_DES_FUNCTIONS - * \brief Decrypt function for DES algo - * \param *areq Pointer to ablkcipher request in memory - * \return 0 is success, -EINPROGRESS if encryting, EINVAL if failure -*/ - -static int lq_ecb_des_encrypt(struct ablkcipher_request *areq) -{ - struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); - struct des_ctx *ctx = crypto_ablkcipher_ctx(cipher); - - return lq_queue_mgr(ctx, areq, areq->info, CRYPTO_DIR_ENCRYPT, 0); -} - -/* \fn static int lq_ecb_des_decrypt(struct ablkcipher_request *areq) - * \ingroup IFX_DES_FUNCTIONS - * \brief Decrypt function for DES algo - * \param *areq Pointer to ablkcipher request in memory - * \return 0 is success, -EINPROGRESS if encryting, EINVAL if failure -*/ -static int lq_ecb_des_decrypt(struct ablkcipher_request *areq) -{ - struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); - struct des_ctx *ctx = crypto_ablkcipher_ctx(cipher); - - return lq_queue_mgr(ctx, areq, areq->info, CRYPTO_DIR_DECRYPT, 0); - -} - -/* \fn static int lq_cbc_ecb_des_encrypt(struct ablkcipher_request *areq) - * \ingroup IFX_DES_FUNCTIONS - * \brief Decrypt function for DES algo - * \param *areq Pointer to ablkcipher request in memory - * \return 0 is success, -EINPROGRESS if encryting, EINVAL if failure -*/ - -static int lq_cbc_des_encrypt(struct ablkcipher_request *areq) -{ - struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); - struct des_ctx *ctx = crypto_ablkcipher_ctx(cipher); - - return lq_queue_mgr(ctx, areq, areq->info, CRYPTO_DIR_ENCRYPT, 1); -} -/* \fn static int lq_cbc_des_decrypt(struct ablkcipher_request *areq) - * \ingroup IFX_DES_FUNCTIONS - * \brief Decrypt function for DES algo - * \param *areq Pointer to ablkcipher request in memory - * \return 0 is success, -EINPROGRESS if encryting, EINVAL if failure -*/ - -static int lq_cbc_des_decrypt(struct ablkcipher_request *areq) -{ - struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq); - struct des_ctx *ctx = crypto_ablkcipher_ctx(cipher); - - return lq_queue_mgr(ctx, areq, areq->info, CRYPTO_DIR_DECRYPT, 1); -} - -struct lq_des_alg { - struct crypto_alg alg; -}; - -/* DES Supported algo array */ -static struct lq_des_alg des_drivers_alg [] = { - { - .alg = { - .cra_name = "des", - .cra_driver_name = "lqdeu-des", - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct des_ctx), - .cra_type = &crypto_ablkcipher_type, - .cra_priority = 300, - .cra_module = THIS_MODULE, - .cra_ablkcipher = { - .setkey = lq_des_setkey, - .encrypt = lq_des_encrypt, - .decrypt = lq_des_decrypt, - .geniv = "eseqiv", - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - } - } - - },{ - .alg = { - .cra_name = "ecb(des)", - .cra_driver_name = "lqdeu-ecb(des)", - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct des_ctx), - .cra_type = &crypto_ablkcipher_type, - .cra_priority = 300, - .cra_module = THIS_MODULE, - .cra_ablkcipher = { - .setkey = lq_des_setkey, - .encrypt = lq_ecb_des_encrypt, - .decrypt = lq_ecb_des_decrypt, - .geniv = "eseqiv", - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - } - } - },{ - .alg = { - .cra_name = "cbc(des)", - .cra_driver_name = "lqdeu-cbc(des)", - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct des_ctx), - .cra_type = &crypto_ablkcipher_type, - .cra_priority = 300, - .cra_module = THIS_MODULE, - .cra_ablkcipher = { - .setkey = lq_des_setkey, - .encrypt = lq_cbc_des_encrypt, - .decrypt = lq_cbc_des_decrypt, - .geniv = "eseqiv", - .min_keysize = DES3_EDE_KEY_SIZE, - .max_keysize = DES3_EDE_KEY_SIZE, - .ivsize = DES3_EDE_BLOCK_SIZE, - } - } - },{ - .alg = { - .cra_name = "des3_ede", - .cra_driver_name = "lqdeu-des3_ede", - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct des_ctx), - .cra_type = &crypto_ablkcipher_type, - .cra_priority = 300, - .cra_module = THIS_MODULE, - .cra_ablkcipher = { - .setkey = lq_des3_ede_setkey, - .encrypt = lq_des_encrypt, - .decrypt = lq_des_decrypt, - .geniv = "eseqiv", - .min_keysize = DES_KEY_SIZE, - .max_keysize = DES_KEY_SIZE, - .ivsize = DES_BLOCK_SIZE, - } - } - },{ - .alg = { - .cra_name = "ecb(des3_ede)", - .cra_driver_name = "lqdeu-ecb(des3_ede)", - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct des_ctx), - .cra_type = &crypto_ablkcipher_type, - .cra_priority = 300, - .cra_module = THIS_MODULE, - .cra_ablkcipher = { - .setkey = lq_des3_ede_setkey, - .encrypt = lq_ecb_des_encrypt, - .decrypt = lq_ecb_des_decrypt, - .geniv = "eseqiv", - .min_keysize = DES3_EDE_KEY_SIZE, - .max_keysize = DES3_EDE_KEY_SIZE, - .ivsize = DES3_EDE_BLOCK_SIZE, - } - } - },{ - .alg = { - .cra_name = "cbc(des3_ede)", - .cra_driver_name = "lqdeu-cbc(des3_ede)", - .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, - .cra_blocksize = DES_BLOCK_SIZE, - .cra_ctxsize = sizeof(struct des_ctx), - .cra_type = &crypto_ablkcipher_type, - .cra_priority = 300, - .cra_module = THIS_MODULE, - .cra_ablkcipher = { - .setkey = lq_des3_ede_setkey, - .encrypt = lq_cbc_des_encrypt, - .decrypt = lq_cbc_des_decrypt, - .geniv = "eseqiv", - .min_keysize = DES3_EDE_KEY_SIZE, - .max_keysize = DES3_EDE_KEY_SIZE, - .ivsize = DES3_EDE_BLOCK_SIZE, - } - } - } -}; - -/*! \fn int __init lqdeu_async_des_init (void) - * \ingroup IFX_DES_FUNCTIONS - * \brief initialize des driver -*/ -int __init lqdeu_async_des_init (void) -{ - int i, j, ret = -EINVAL; - -#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 - for (i = 0; i < ARRAY_SIZE(des_drivers_alg); i++) { - ret = crypto_register_alg(&des_drivers_alg[i].alg); - //printk("driver: %s\n", des_drivers_alg[i].alg.cra_name); - if (ret) - goto des_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: - for (j = 0; j < i; j++) - crypto_unregister_alg(&des_drivers_alg[i].alg); - - printk(KERN_ERR "Lantiq %s driver initialization failed!\n", (char *)&des_drivers_alg[i].alg.cra_driver_name); - return ret; - -cbc_des3_ede_err: - for (i = 0; i < ARRAY_SIZE(des_drivers_alg); i++) { - if (!strcmp((char *)&des_drivers_alg[i].alg.cra_name, "cbc(des3_ede)")) - crypto_unregister_alg(&des_drivers_alg[i].alg); - } - - printk(KERN_ERR "Lantiq %s driver initialization failed!\n", (char *)&des_drivers_alg[i].alg.cra_driver_name); - return ret; -} - -/*! \fn void __exit lqdeu_fini_async_des (void) - * \ingroup IFX_DES_FUNCTIONS - * \brief unregister des driver -*/ -void __exit lqdeu_fini_async_des (void) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(des_drivers_alg); i++) - crypto_unregister_alg(&des_drivers_alg[i].alg); - - des_queue->hw_status = DES_COMPLETED; - DEU_WAKEUP_EVENT(deu_dma_priv.deu_thread_wait, DES_ASYNC_EVENT, - deu_dma_priv.des_event_flags); - - kfree(des_queue); -} - |