| /****************************************************************************** |
| ** |
| ** 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; |
| module_param(disable_multiblock, int, 0); |
| |
| 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 = 400, |
| .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 = 400, |
| .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 = 400, |
| .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 = 400, |
| .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; |
| |
| 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); |
| } |
| |