From: Gilad Ben-Yossef Date: Sun, 23 Apr 2017 09:26:11 +0000 (+0300) Subject: staging: ccree: add skcipher support X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=302ef8ebb4b2ca10b06268c2ef5fbc4d1f061a51;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git staging: ccree: add skcipher support Add CryptoCell skcipher support Signed-off-by: Gilad Ben-Yossef Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/staging/ccree/Kconfig b/drivers/staging/ccree/Kconfig index a528a9968e98..3fff040a87bf 100644 --- a/drivers/staging/ccree/Kconfig +++ b/drivers/staging/ccree/Kconfig @@ -3,11 +3,19 @@ config CRYPTO_DEV_CCREE depends on CRYPTO_HW && OF && HAS_DMA default n select CRYPTO_HASH + select CRYPTO_BLKCIPHER + select CRYPTO_DES + select CRYPTO_AUTHENC select CRYPTO_SHA1 select CRYPTO_MD5 select CRYPTO_SHA256 select CRYPTO_SHA512 select CRYPTO_HMAC + select CRYPTO_AES + select CRYPTO_CBC + select CRYPTO_ECB + select CRYPTO_CTR + select CRYPTO_XTS help Say 'Y' to enable a driver for the Arm TrustZone CryptoCell C7xx. Currently only the CryptoCell 712 REE is supported. diff --git a/drivers/staging/ccree/Makefile b/drivers/staging/ccree/Makefile index f94e225eba16..21a80d5c85de 100644 --- a/drivers/staging/ccree/Makefile +++ b/drivers/staging/ccree/Makefile @@ -1,2 +1,2 @@ obj-$(CONFIG_CRYPTO_DEV_CCREE) := ccree.o -ccree-y := ssi_driver.o ssi_sysfs.o ssi_buffer_mgr.o ssi_request_mgr.o ssi_hash.o ssi_sram_mgr.o ssi_pm.o ssi_pm_ext.o +ccree-y := ssi_driver.o ssi_sysfs.o ssi_buffer_mgr.o ssi_request_mgr.o ssi_cipher.o ssi_hash.o ssi_sram_mgr.o ssi_pm.o ssi_pm_ext.o diff --git a/drivers/staging/ccree/cc_crypto_ctx.h b/drivers/staging/ccree/cc_crypto_ctx.h index a4aa0660eb16..a7f7d953cf28 100644 --- a/drivers/staging/ccree/cc_crypto_ctx.h +++ b/drivers/staging/ccree/cc_crypto_ctx.h @@ -242,6 +242,27 @@ struct drv_ctx_hmac { CC_DIGEST_SIZE_MAX - CC_HMAC_BLOCK_SIZE_MAX]; }; +struct drv_ctx_cipher { + enum drv_crypto_alg alg; /* DRV_CRYPTO_ALG_AES */ + enum drv_cipher_mode mode; + enum drv_crypto_direction direction; + enum drv_crypto_key_type crypto_key_type; + enum drv_crypto_padding_type padding_type; + uint32_t key_size; /* numeric value in bytes */ + uint32_t data_unit_size; /* required for XTS */ + /* block_state is the AES engine block state. + * It is used by the host to pass IV or counter at initialization. + * It is used by SeP for intermediate block chaining state and for + * returning MAC algorithms results. */ + uint8_t block_state[CC_AES_BLOCK_SIZE]; + uint8_t key[CC_AES_KEY_SIZE_MAX]; + uint8_t xex_key[CC_AES_KEY_SIZE_MAX]; + /* reserve to end of allocated context size */ + uint32_t reserved[CC_DRV_CTX_SIZE_WORDS - 7 - + CC_AES_BLOCK_SIZE/sizeof(uint32_t) - 2 * + (CC_AES_KEY_SIZE_MAX/sizeof(uint32_t))]; +}; + /*******************************************************************/ /***************** MESSAGE BASED CONTEXTS **************************/ /*******************************************************************/ diff --git a/drivers/staging/ccree/ssi_buffer_mgr.c b/drivers/staging/ccree/ssi_buffer_mgr.c index aceb01c72b60..d0d5352ec6af 100644 --- a/drivers/staging/ccree/ssi_buffer_mgr.c +++ b/drivers/staging/ccree/ssi_buffer_mgr.c @@ -28,6 +28,7 @@ #include "ssi_buffer_mgr.h" #include "cc_lli_defs.h" +#include "ssi_cipher.h" #include "ssi_hash.h" #define LLI_MAX_NUM_OF_DATA_ENTRIES 128 @@ -517,6 +518,152 @@ static inline int ssi_ahash_handle_curr_buf(struct device *dev, return 0; } +void ssi_buffer_mgr_unmap_blkcipher_request( + struct device *dev, + void *ctx, + unsigned int ivsize, + struct scatterlist *src, + struct scatterlist *dst) +{ + struct blkcipher_req_ctx *req_ctx = (struct blkcipher_req_ctx *)ctx; + + if (likely(req_ctx->gen_ctx.iv_dma_addr != 0)) { + SSI_LOG_DEBUG("Unmapped iv: iv_dma_addr=0x%llX iv_size=%u\n", + (unsigned long long)req_ctx->gen_ctx.iv_dma_addr, + ivsize); + SSI_RESTORE_DMA_ADDR_TO_48BIT(req_ctx->gen_ctx.iv_dma_addr); + dma_unmap_single(dev, req_ctx->gen_ctx.iv_dma_addr, + ivsize, + DMA_TO_DEVICE); + } + /* Release pool */ + if (req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI) { + SSI_RESTORE_DMA_ADDR_TO_48BIT(req_ctx->mlli_params.mlli_dma_addr); + dma_pool_free(req_ctx->mlli_params.curr_pool, + req_ctx->mlli_params.mlli_virt_addr, + req_ctx->mlli_params.mlli_dma_addr); + } + + SSI_RESTORE_DMA_ADDR_TO_48BIT(sg_dma_address(src)); + dma_unmap_sg(dev, src, req_ctx->in_nents, + DMA_BIDIRECTIONAL); + SSI_LOG_DEBUG("Unmapped req->src=%pK\n", + sg_virt(src)); + + if (src != dst) { + SSI_RESTORE_DMA_ADDR_TO_48BIT(sg_dma_address(dst)); + dma_unmap_sg(dev, dst, req_ctx->out_nents, + DMA_BIDIRECTIONAL); + SSI_LOG_DEBUG("Unmapped req->dst=%pK\n", + sg_virt(dst)); + } +} + +int ssi_buffer_mgr_map_blkcipher_request( + struct ssi_drvdata *drvdata, + void *ctx, + unsigned int ivsize, + unsigned int nbytes, + void *info, + struct scatterlist *src, + struct scatterlist *dst) +{ + struct blkcipher_req_ctx *req_ctx = (struct blkcipher_req_ctx *)ctx; + struct mlli_params *mlli_params = &req_ctx->mlli_params; + struct buff_mgr_handle *buff_mgr = drvdata->buff_mgr_handle; + struct device *dev = &drvdata->plat_dev->dev; + struct buffer_array sg_data; + uint32_t dummy = 0; + int rc = 0; + uint32_t mapped_nents = 0; + + req_ctx->dma_buf_type = SSI_DMA_BUF_DLLI; + mlli_params->curr_pool = NULL; + sg_data.num_of_buffers = 0; + + /* Map IV buffer */ + if (likely(ivsize != 0) ) { + dump_byte_array("iv", (uint8_t *)info, ivsize); + req_ctx->gen_ctx.iv_dma_addr = + dma_map_single(dev, (void *)info, + ivsize, + DMA_TO_DEVICE); + if (unlikely(dma_mapping_error(dev, + req_ctx->gen_ctx.iv_dma_addr))) { + SSI_LOG_ERR("Mapping iv %u B at va=%pK " + "for DMA failed\n", ivsize, info); + return -ENOMEM; + } + SSI_UPDATE_DMA_ADDR_TO_48BIT(req_ctx->gen_ctx.iv_dma_addr, + ivsize); + SSI_LOG_DEBUG("Mapped iv %u B at va=%pK to dma=0x%llX\n", + ivsize, info, + (unsigned long long)req_ctx->gen_ctx.iv_dma_addr); + } else + req_ctx->gen_ctx.iv_dma_addr = 0; + + /* Map the src SGL */ + rc = ssi_buffer_mgr_map_scatterlist(dev, src, + nbytes, DMA_BIDIRECTIONAL, &req_ctx->in_nents, + LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy, &mapped_nents); + if (unlikely(rc != 0)) { + rc = -ENOMEM; + goto ablkcipher_exit; + } + if (mapped_nents > 1) + req_ctx->dma_buf_type = SSI_DMA_BUF_MLLI; + + if (unlikely(src == dst)) { + /* Handle inplace operation */ + if (unlikely(req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI)) { + req_ctx->out_nents = 0; + ssi_buffer_mgr_add_scatterlist_entry(&sg_data, + req_ctx->in_nents, src, + nbytes, 0, true, &req_ctx->in_mlli_nents); + } + } else { + /* Map the dst sg */ + if (unlikely(ssi_buffer_mgr_map_scatterlist( + dev,dst, nbytes, + DMA_BIDIRECTIONAL, &req_ctx->out_nents, + LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy, + &mapped_nents))){ + rc = -ENOMEM; + goto ablkcipher_exit; + } + if (mapped_nents > 1) + req_ctx->dma_buf_type = SSI_DMA_BUF_MLLI; + + if (unlikely((req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI))) { + ssi_buffer_mgr_add_scatterlist_entry(&sg_data, + req_ctx->in_nents, src, + nbytes, 0, true, + &req_ctx->in_mlli_nents); + ssi_buffer_mgr_add_scatterlist_entry(&sg_data, + req_ctx->out_nents, dst, + nbytes, 0, true, + &req_ctx->out_mlli_nents); + } + } + + if (unlikely(req_ctx->dma_buf_type == SSI_DMA_BUF_MLLI)) { + mlli_params->curr_pool = buff_mgr->mlli_buffs_pool; + rc = ssi_buffer_mgr_generate_mlli(dev, &sg_data, mlli_params); + if (unlikely(rc!= 0)) + goto ablkcipher_exit; + + } + + SSI_LOG_DEBUG("areq_ctx->dma_buf_type = %s\n", + GET_DMA_BUFFER_TYPE(req_ctx->dma_buf_type)); + + return 0; + +ablkcipher_exit: + ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst); + return rc; +} + int ssi_buffer_mgr_map_hash_request_final( struct ssi_drvdata *drvdata, void *ctx, struct scatterlist *src, unsigned int nbytes, bool do_update) { diff --git a/drivers/staging/ccree/ssi_buffer_mgr.h b/drivers/staging/ccree/ssi_buffer_mgr.h index cadb853b807b..41412b26f41a 100644 --- a/drivers/staging/ccree/ssi_buffer_mgr.h +++ b/drivers/staging/ccree/ssi_buffer_mgr.h @@ -55,6 +55,22 @@ int ssi_buffer_mgr_init(struct ssi_drvdata *drvdata); int ssi_buffer_mgr_fini(struct ssi_drvdata *drvdata); +int ssi_buffer_mgr_map_blkcipher_request( + struct ssi_drvdata *drvdata, + void *ctx, + unsigned int ivsize, + unsigned int nbytes, + void *info, + struct scatterlist *src, + struct scatterlist *dst); + +void ssi_buffer_mgr_unmap_blkcipher_request( + struct device *dev, + void *ctx, + unsigned int ivsize, + struct scatterlist *src, + struct scatterlist *dst); + int ssi_buffer_mgr_map_hash_request_final(struct ssi_drvdata *drvdata, void *ctx, struct scatterlist *src, unsigned int nbytes, bool do_update); int ssi_buffer_mgr_map_hash_request_update(struct ssi_drvdata *drvdata, void *ctx, struct scatterlist *src, unsigned int nbytes, unsigned int block_size); diff --git a/drivers/staging/ccree/ssi_cipher.c b/drivers/staging/ccree/ssi_cipher.c new file mode 100644 index 000000000000..d22a1b30dbc6 --- /dev/null +++ b/drivers/staging/ccree/ssi_cipher.c @@ -0,0 +1,1440 @@ +/* + * Copyright (C) 2012-2017 ARM Limited or its affiliates. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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, see . + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ssi_config.h" +#include "ssi_driver.h" +#include "cc_lli_defs.h" +#include "ssi_buffer_mgr.h" +#include "ssi_cipher.h" +#include "ssi_request_mgr.h" +#include "ssi_sysfs.h" + +#define MAX_ABLKCIPHER_SEQ_LEN 6 + +#define template_ablkcipher template_u.ablkcipher +#define template_sblkcipher template_u.blkcipher + +#define SSI_MIN_AES_XTS_SIZE 0x10 +#define SSI_MAX_AES_XTS_SIZE 0x2000 +struct ssi_blkcipher_handle { + struct list_head blkcipher_alg_list; +}; + +struct cc_user_key_info { + uint8_t *key; + dma_addr_t key_dma_addr; +}; +struct cc_hw_key_info { + enum HwCryptoKey key1_slot; + enum HwCryptoKey key2_slot; +}; + +struct ssi_ablkcipher_ctx { + struct ssi_drvdata *drvdata; + int keylen; + int key_round_number; + int cipher_mode; + int flow_mode; + unsigned int flags; + struct blkcipher_req_ctx *sync_ctx; + struct cc_user_key_info user; + struct cc_hw_key_info hw; + struct crypto_shash *shash_tfm; +}; + +static void ssi_ablkcipher_complete(struct device *dev, void *ssi_req, void __iomem *cc_base); + + +static int validate_keys_sizes(struct ssi_ablkcipher_ctx *ctx_p, uint32_t size) { + switch (ctx_p->flow_mode){ + case S_DIN_to_AES: + switch (size){ + case CC_AES_128_BIT_KEY_SIZE: + case CC_AES_192_BIT_KEY_SIZE: + if (likely((ctx_p->cipher_mode != DRV_CIPHER_XTS) && + (ctx_p->cipher_mode != DRV_CIPHER_ESSIV) && + (ctx_p->cipher_mode != DRV_CIPHER_BITLOCKER))) + return 0; + break; + case CC_AES_256_BIT_KEY_SIZE: + return 0; + case (CC_AES_192_BIT_KEY_SIZE*2): + case (CC_AES_256_BIT_KEY_SIZE*2): + if (likely((ctx_p->cipher_mode == DRV_CIPHER_XTS) || + (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) || + (ctx_p->cipher_mode == DRV_CIPHER_BITLOCKER))) + return 0; + break; + default: + break; + } + case S_DIN_to_DES: + if (likely(size == DES3_EDE_KEY_SIZE || + size == DES_KEY_SIZE)) + return 0; + break; +#if SSI_CC_HAS_MULTI2 + case S_DIN_to_MULTI2: + if (likely(size == CC_MULTI2_SYSTEM_N_DATA_KEY_SIZE)) + return 0; + break; +#endif + default: + break; + + } + return -EINVAL; +} + + +static int validate_data_size(struct ssi_ablkcipher_ctx *ctx_p, unsigned int size) { + switch (ctx_p->flow_mode){ + case S_DIN_to_AES: + switch (ctx_p->cipher_mode){ + case DRV_CIPHER_XTS: + if ((size >= SSI_MIN_AES_XTS_SIZE) && + (size <= SSI_MAX_AES_XTS_SIZE) && + IS_ALIGNED(size, AES_BLOCK_SIZE)) + return 0; + break; + case DRV_CIPHER_CBC_CTS: + if (likely(size >= AES_BLOCK_SIZE)) + return 0; + break; + case DRV_CIPHER_OFB: + case DRV_CIPHER_CTR: + return 0; + case DRV_CIPHER_ECB: + case DRV_CIPHER_CBC: + case DRV_CIPHER_ESSIV: + case DRV_CIPHER_BITLOCKER: + if (likely(IS_ALIGNED(size, AES_BLOCK_SIZE))) + return 0; + break; + default: + break; + } + break; + case S_DIN_to_DES: + if (likely(IS_ALIGNED(size, DES_BLOCK_SIZE))) + return 0; + break; +#if SSI_CC_HAS_MULTI2 + case S_DIN_to_MULTI2: + switch (ctx_p->cipher_mode) { + case DRV_MULTI2_CBC: + if (likely(IS_ALIGNED(size, CC_MULTI2_BLOCK_SIZE))) + return 0; + break; + case DRV_MULTI2_OFB: + return 0; + default: + break; + } + break; +#endif /*SSI_CC_HAS_MULTI2*/ + default: + break; + + } + return -EINVAL; +} + +static unsigned int get_max_keysize(struct crypto_tfm *tfm) +{ + struct ssi_crypto_alg *ssi_alg = container_of(tfm->__crt_alg, struct ssi_crypto_alg, crypto_alg); + + if ((ssi_alg->crypto_alg.cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_ABLKCIPHER) { + return ssi_alg->crypto_alg.cra_ablkcipher.max_keysize; + } + + if ((ssi_alg->crypto_alg.cra_flags & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_BLKCIPHER) { + return ssi_alg->crypto_alg.cra_blkcipher.max_keysize; + } + + return 0; +} + +static int ssi_blkcipher_init(struct crypto_tfm *tfm) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct crypto_alg *alg = tfm->__crt_alg; + struct ssi_crypto_alg *ssi_alg = + container_of(alg, struct ssi_crypto_alg, crypto_alg); + struct device *dev; + int rc = 0; + unsigned int max_key_buf_size = get_max_keysize(tfm); + + SSI_LOG_DEBUG("Initializing context @%p for %s\n", ctx_p, + crypto_tfm_alg_name(tfm)); + + ctx_p->cipher_mode = ssi_alg->cipher_mode; + ctx_p->flow_mode = ssi_alg->flow_mode; + ctx_p->drvdata = ssi_alg->drvdata; + dev = &ctx_p->drvdata->plat_dev->dev; + + /* Allocate key buffer, cache line aligned */ + ctx_p->user.key = kmalloc(max_key_buf_size, GFP_KERNEL|GFP_DMA); + if (!ctx_p->user.key) { + SSI_LOG_ERR("Allocating key buffer in context failed\n"); + rc = -ENOMEM; + } + SSI_LOG_DEBUG("Allocated key buffer in context. key=@%p\n", + ctx_p->user.key); + + /* Map key buffer */ + ctx_p->user.key_dma_addr = dma_map_single(dev, (void *)ctx_p->user.key, + max_key_buf_size, DMA_TO_DEVICE); + if (dma_mapping_error(dev, ctx_p->user.key_dma_addr)) { + SSI_LOG_ERR("Mapping Key %u B at va=%pK for DMA failed\n", + max_key_buf_size, ctx_p->user.key); + return -ENOMEM; + } + SSI_UPDATE_DMA_ADDR_TO_48BIT(ctx_p->user.key_dma_addr, max_key_buf_size); + SSI_LOG_DEBUG("Mapped key %u B at va=%pK to dma=0x%llX\n", + max_key_buf_size, ctx_p->user.key, + (unsigned long long)ctx_p->user.key_dma_addr); + + if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + /* Alloc hash tfm for essiv */ + ctx_p->shash_tfm = crypto_alloc_shash("sha256-generic", 0, 0); + if (IS_ERR(ctx_p->shash_tfm)) { + SSI_LOG_ERR("Error allocating hash tfm for ESSIV.\n"); + return PTR_ERR(ctx_p->shash_tfm); + } + } + + return rc; +} + +static void ssi_blkcipher_exit(struct crypto_tfm *tfm) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = &ctx_p->drvdata->plat_dev->dev; + unsigned int max_key_buf_size = get_max_keysize(tfm); + + SSI_LOG_DEBUG("Clearing context @%p for %s\n", + crypto_tfm_ctx(tfm), crypto_tfm_alg_name(tfm)); + + if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + /* Free hash tfm for essiv */ + crypto_free_shash(ctx_p->shash_tfm); + ctx_p->shash_tfm = NULL; + } + + /* Unmap key buffer */ + SSI_RESTORE_DMA_ADDR_TO_48BIT(ctx_p->user.key_dma_addr); + dma_unmap_single(dev, ctx_p->user.key_dma_addr, max_key_buf_size, + DMA_TO_DEVICE); + SSI_LOG_DEBUG("Unmapped key buffer key_dma_addr=0x%llX\n", + (unsigned long long)ctx_p->user.key_dma_addr); + + /* Free key buffer in context */ + kfree(ctx_p->user.key); + SSI_LOG_DEBUG("Free key buffer in context. key=@%p\n", ctx_p->user.key); +} + + +typedef struct tdes_keys{ + u8 key1[DES_KEY_SIZE]; + u8 key2[DES_KEY_SIZE]; + u8 key3[DES_KEY_SIZE]; +}tdes_keys_t; + +static const u8 zero_buff[] = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, + 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}; + +static enum HwCryptoKey hw_key_to_cc_hw_key(int slot_num) +{ + switch (slot_num) { + case 0: + return KFDE0_KEY; + case 1: + return KFDE1_KEY; + case 2: + return KFDE2_KEY; + case 3: + return KFDE3_KEY; + } + return END_OF_KEYS; +} + +static int ssi_blkcipher_setkey(struct crypto_tfm *tfm, + const u8 *key, + unsigned int keylen) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = &ctx_p->drvdata->plat_dev->dev; + u32 tmp[DES_EXPKEY_WORDS]; + unsigned int max_key_buf_size = get_max_keysize(tfm); + DECL_CYCLE_COUNT_RESOURCES; + + SSI_LOG_DEBUG("Setting key in context @%p for %s. keylen=%u\n", + ctx_p, crypto_tfm_alg_name(tfm), keylen); + dump_byte_array("key", (uint8_t *)key, keylen); + + /* STAT_PHASE_0: Init and sanity checks */ + START_CYCLE_COUNT(); + +#if SSI_CC_HAS_MULTI2 + /*last byte of key buffer is round number and should not be a part of key size*/ + if (ctx_p->flow_mode == S_DIN_to_MULTI2) { + keylen -=1; + } +#endif /*SSI_CC_HAS_MULTI2*/ + + if (unlikely(validate_keys_sizes(ctx_p,keylen) != 0)) { + SSI_LOG_ERR("Unsupported key size %d.\n", keylen); + crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; + } + + if (ssi_is_hw_key(tfm)) { + /* setting HW key slots */ + struct arm_hw_key_info *hki = (struct arm_hw_key_info*)key; + + if (unlikely(ctx_p->flow_mode != S_DIN_to_AES)) { + SSI_LOG_ERR("HW key not supported for non-AES flows\n"); + return -EINVAL; + } + + ctx_p->hw.key1_slot = hw_key_to_cc_hw_key(hki->hw_key1); + if (unlikely(ctx_p->hw.key1_slot == END_OF_KEYS)) { + SSI_LOG_ERR("Unsupported hw key1 number (%d)\n", hki->hw_key1); + return -EINVAL; + } + + if ((ctx_p->cipher_mode == DRV_CIPHER_XTS) || + (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) || + (ctx_p->cipher_mode == DRV_CIPHER_BITLOCKER)) { + if (unlikely(hki->hw_key1 == hki->hw_key2)) { + SSI_LOG_ERR("Illegal hw key numbers (%d,%d)\n", hki->hw_key1, hki->hw_key2); + return -EINVAL; + } + ctx_p->hw.key2_slot = hw_key_to_cc_hw_key(hki->hw_key2); + if (unlikely(ctx_p->hw.key2_slot == END_OF_KEYS)) { + SSI_LOG_ERR("Unsupported hw key2 number (%d)\n", hki->hw_key2); + return -EINVAL; + } + } + + ctx_p->keylen = keylen; + END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_0); + SSI_LOG_DEBUG("ssi_blkcipher_setkey: ssi_is_hw_key ret 0"); + + return 0; + } + + // verify weak keys + if (ctx_p->flow_mode == S_DIN_to_DES) { + if (unlikely(!des_ekey(tmp, key)) && + (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_WEAK_KEY)) { + tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; + SSI_LOG_DEBUG("ssi_blkcipher_setkey: weak DES key"); + return -EINVAL; + } + } + + END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_0); + + /* STAT_PHASE_1: Copy key to ctx */ + START_CYCLE_COUNT(); + SSI_RESTORE_DMA_ADDR_TO_48BIT(ctx_p->user.key_dma_addr); + dma_sync_single_for_cpu(dev, ctx_p->user.key_dma_addr, + max_key_buf_size, DMA_TO_DEVICE); +#if SSI_CC_HAS_MULTI2 + if (ctx_p->flow_mode == S_DIN_to_MULTI2) { + memcpy(ctx_p->user.key, key, CC_MULTI2_SYSTEM_N_DATA_KEY_SIZE); + ctx_p->key_round_number = key[CC_MULTI2_SYSTEM_N_DATA_KEY_SIZE]; + if (ctx_p->key_round_number < CC_MULTI2_MIN_NUM_ROUNDS || + ctx_p->key_round_number > CC_MULTI2_MAX_NUM_ROUNDS) { + crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN); + SSI_LOG_DEBUG("ssi_blkcipher_setkey: SSI_CC_HAS_MULTI2 einval"); + return -EINVAL; + } + } else +#endif /*SSI_CC_HAS_MULTI2*/ + { + memcpy(ctx_p->user.key, key, keylen); + if (keylen == 24) + memset(ctx_p->user.key + 24, 0, CC_AES_KEY_SIZE_MAX - 24); + + if (ctx_p->cipher_mode == DRV_CIPHER_ESSIV) { + /* sha256 for key2 - use sw implementation */ + int key_len = keylen >> 1; + int err; + SHASH_DESC_ON_STACK(desc, ctx_p->shash_tfm); + desc->tfm = ctx_p->shash_tfm; + + err = crypto_shash_digest(desc, ctx_p->user.key, key_len, ctx_p->user.key + key_len); + if (err) { + SSI_LOG_ERR("Failed to hash ESSIV key.\n"); + return err; + } + } + } + dma_sync_single_for_device(dev, ctx_p->user.key_dma_addr, + max_key_buf_size, DMA_TO_DEVICE); + SSI_UPDATE_DMA_ADDR_TO_48BIT(ctx_p->user.key_dma_addr ,max_key_buf_size); + ctx_p->keylen = keylen; + + END_CYCLE_COUNT(STAT_OP_TYPE_SETKEY, STAT_PHASE_1); + + SSI_LOG_DEBUG("ssi_blkcipher_setkey: return safely"); + return 0; +} + +static inline void +ssi_blkcipher_create_setup_desc( + struct crypto_tfm *tfm, + struct blkcipher_req_ctx *req_ctx, + unsigned int ivsize, + unsigned int nbytes, + HwDesc_s desc[], + unsigned int *seq_size) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + int cipher_mode = ctx_p->cipher_mode; + int flow_mode = ctx_p->flow_mode; + int direction = req_ctx->gen_ctx.op_type; + dma_addr_t key_dma_addr = ctx_p->user.key_dma_addr; + unsigned int key_len = ctx_p->keylen; + dma_addr_t iv_dma_addr = req_ctx->gen_ctx.iv_dma_addr; + unsigned int du_size = nbytes; + + struct ssi_crypto_alg *ssi_alg = container_of(tfm->__crt_alg, struct ssi_crypto_alg, crypto_alg); + + if ((ssi_alg->crypto_alg.cra_flags & CRYPTO_ALG_BULK_MASK) == CRYPTO_ALG_BULK_DU_512) + du_size = 512; + if ((ssi_alg->crypto_alg.cra_flags & CRYPTO_ALG_BULK_MASK) == CRYPTO_ALG_BULK_DU_4096) + du_size = 4096; + + switch (cipher_mode) { + case DRV_CIPHER_CBC: + case DRV_CIPHER_CBC_CTS: + case DRV_CIPHER_CTR: + case DRV_CIPHER_OFB: + /* Load cipher state */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + iv_dma_addr, ivsize, + NS_BIT); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], flow_mode); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], cipher_mode); + if ((cipher_mode == DRV_CIPHER_CTR) || + (cipher_mode == DRV_CIPHER_OFB) ) { + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], + SETUP_LOAD_STATE1); + } else { + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], + SETUP_LOAD_STATE0); + } + (*seq_size)++; + /*FALLTHROUGH*/ + case DRV_CIPHER_ECB: + /* Load key */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], cipher_mode); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + if (flow_mode == S_DIN_to_AES) { + + if (ssi_is_hw_key(tfm)) { + HW_DESC_SET_HW_CRYPTO_KEY(&desc[*seq_size], ctx_p->hw.key1_slot); + } else { + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + key_dma_addr, + ((key_len == 24) ? AES_MAX_KEY_SIZE : key_len), + NS_BIT); + } + HW_DESC_SET_KEY_SIZE_AES(&desc[*seq_size], key_len); + } else { + /*des*/ + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + key_dma_addr, key_len, + NS_BIT); + HW_DESC_SET_KEY_SIZE_DES(&desc[*seq_size], key_len); + } + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], flow_mode); + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], SETUP_LOAD_KEY0); + (*seq_size)++; + break; + case DRV_CIPHER_XTS: + case DRV_CIPHER_ESSIV: + case DRV_CIPHER_BITLOCKER: + /* Load AES key */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], cipher_mode); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + if (ssi_is_hw_key(tfm)) { + HW_DESC_SET_HW_CRYPTO_KEY(&desc[*seq_size], ctx_p->hw.key1_slot); + } else { + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + key_dma_addr, key_len/2, + NS_BIT); + } + HW_DESC_SET_KEY_SIZE_AES(&desc[*seq_size], key_len/2); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], flow_mode); + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], SETUP_LOAD_KEY0); + (*seq_size)++; + + /* load XEX key */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], cipher_mode); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + if (ssi_is_hw_key(tfm)) { + HW_DESC_SET_HW_CRYPTO_KEY(&desc[*seq_size], ctx_p->hw.key2_slot); + } else { + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + (key_dma_addr+key_len/2), key_len/2, + NS_BIT); + } + HW_DESC_SET_XEX_DATA_UNIT_SIZE(&desc[*seq_size], du_size); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], S_DIN_to_AES2); + HW_DESC_SET_KEY_SIZE_AES(&desc[*seq_size], key_len/2); + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], SETUP_LOAD_XEX_KEY); + (*seq_size)++; + + /* Set state */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], SETUP_LOAD_STATE1); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], cipher_mode); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + HW_DESC_SET_KEY_SIZE_AES(&desc[*seq_size], key_len/2); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], flow_mode); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + iv_dma_addr, CC_AES_BLOCK_SIZE, + NS_BIT); + (*seq_size)++; + break; + default: + SSI_LOG_ERR("Unsupported cipher mode (%d)\n", cipher_mode); + BUG(); + } +} + +#if SSI_CC_HAS_MULTI2 +static inline void ssi_blkcipher_create_multi2_setup_desc( + struct crypto_tfm *tfm, + struct blkcipher_req_ctx *req_ctx, + unsigned int ivsize, + HwDesc_s desc[], + unsigned int *seq_size) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + + int direction = req_ctx->gen_ctx.op_type; + /* Load system key */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], ctx_p->cipher_mode); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, ctx_p->user.key_dma_addr, + CC_MULTI2_SYSTEM_KEY_SIZE, + NS_BIT); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], ctx_p->flow_mode); + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], SETUP_LOAD_KEY0); + (*seq_size)++; + + /* load data key */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + (ctx_p->user.key_dma_addr + + CC_MULTI2_SYSTEM_KEY_SIZE), + CC_MULTI2_DATA_KEY_SIZE, NS_BIT); + HW_DESC_SET_MULTI2_NUM_ROUNDS(&desc[*seq_size], + ctx_p->key_round_number); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], ctx_p->flow_mode); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], ctx_p->cipher_mode); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], SETUP_LOAD_STATE0 ); + (*seq_size)++; + + + /* Set state */ + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + req_ctx->gen_ctx.iv_dma_addr, + ivsize, NS_BIT); + HW_DESC_SET_CIPHER_CONFIG0(&desc[*seq_size], direction); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], ctx_p->flow_mode); + HW_DESC_SET_CIPHER_MODE(&desc[*seq_size], ctx_p->cipher_mode); + HW_DESC_SET_SETUP_MODE(&desc[*seq_size], SETUP_LOAD_STATE1); + (*seq_size)++; + +} +#endif /*SSI_CC_HAS_MULTI2*/ + +static inline void +ssi_blkcipher_create_data_desc( + struct crypto_tfm *tfm, + struct blkcipher_req_ctx *req_ctx, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes, + void *areq, + HwDesc_s desc[], + unsigned int *seq_size) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + unsigned int flow_mode = ctx_p->flow_mode; + + switch (ctx_p->flow_mode) { + case S_DIN_to_AES: + flow_mode = DIN_AES_DOUT; + break; + case S_DIN_to_DES: + flow_mode = DIN_DES_DOUT; + break; +#if SSI_CC_HAS_MULTI2 + case S_DIN_to_MULTI2: + flow_mode = DIN_MULTI2_DOUT; + break; +#endif /*SSI_CC_HAS_MULTI2*/ + default: + SSI_LOG_ERR("invalid flow mode, flow_mode = %d \n", flow_mode); + return; + } + /* Process */ + if (likely(req_ctx->dma_buf_type == SSI_DMA_BUF_DLLI)){ + SSI_LOG_DEBUG(" data params addr 0x%llX length 0x%X \n", + (unsigned long long)sg_dma_address(src), + nbytes); + SSI_LOG_DEBUG(" data params addr 0x%llX length 0x%X \n", + (unsigned long long)sg_dma_address(dst), + nbytes); + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + sg_dma_address(src), + nbytes, NS_BIT); + HW_DESC_SET_DOUT_DLLI(&desc[*seq_size], + sg_dma_address(dst), + nbytes, + NS_BIT, (areq == NULL)? 0:1); + if (areq != NULL) { + HW_DESC_SET_QUEUE_LAST_IND(&desc[*seq_size]); + } + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], flow_mode); + (*seq_size)++; + } else { + /* bypass */ + SSI_LOG_DEBUG(" bypass params addr 0x%llX " + "length 0x%X addr 0x%08X\n", + (unsigned long long)req_ctx->mlli_params.mlli_dma_addr, + req_ctx->mlli_params.mlli_len, + (unsigned int)ctx_p->drvdata->mlli_sram_addr); + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_DLLI, + req_ctx->mlli_params.mlli_dma_addr, + req_ctx->mlli_params.mlli_len, + NS_BIT); + HW_DESC_SET_DOUT_SRAM(&desc[*seq_size], + ctx_p->drvdata->mlli_sram_addr, + req_ctx->mlli_params.mlli_len); + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], BYPASS); + (*seq_size)++; + + HW_DESC_INIT(&desc[*seq_size]); + HW_DESC_SET_DIN_TYPE(&desc[*seq_size], DMA_MLLI, + ctx_p->drvdata->mlli_sram_addr, + req_ctx->in_mlli_nents, NS_BIT); + if (req_ctx->out_nents == 0) { + SSI_LOG_DEBUG(" din/dout params addr 0x%08X " + "addr 0x%08X\n", + (unsigned int)ctx_p->drvdata->mlli_sram_addr, + (unsigned int)ctx_p->drvdata->mlli_sram_addr); + HW_DESC_SET_DOUT_MLLI(&desc[*seq_size], + ctx_p->drvdata->mlli_sram_addr, + req_ctx->in_mlli_nents, + NS_BIT,(areq == NULL)? 0:1); + } else { + SSI_LOG_DEBUG(" din/dout params " + "addr 0x%08X addr 0x%08X\n", + (unsigned int)ctx_p->drvdata->mlli_sram_addr, + (unsigned int)ctx_p->drvdata->mlli_sram_addr + + (uint32_t)LLI_ENTRY_BYTE_SIZE * + req_ctx->in_nents); + HW_DESC_SET_DOUT_MLLI(&desc[*seq_size], + (ctx_p->drvdata->mlli_sram_addr + + LLI_ENTRY_BYTE_SIZE * + req_ctx->in_mlli_nents), + req_ctx->out_mlli_nents, NS_BIT,(areq == NULL)? 0:1); + } + if (areq != NULL) { + HW_DESC_SET_QUEUE_LAST_IND(&desc[*seq_size]); + } + HW_DESC_SET_FLOW_MODE(&desc[*seq_size], flow_mode); + (*seq_size)++; + } +} + +static int ssi_blkcipher_complete(struct device *dev, + struct ssi_ablkcipher_ctx *ctx_p, + struct blkcipher_req_ctx *req_ctx, + struct scatterlist *dst, struct scatterlist *src, + void *info, //req info + unsigned int ivsize, + void *areq, + void __iomem *cc_base) +{ + int completion_error = 0; + uint32_t inflight_counter; + DECL_CYCLE_COUNT_RESOURCES; + + START_CYCLE_COUNT(); + ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst); + info = req_ctx->backup_info; + END_CYCLE_COUNT(STAT_OP_TYPE_GENERIC, STAT_PHASE_4); + + + /*Set the inflight couter value to local variable*/ + inflight_counter = ctx_p->drvdata->inflight_counter; + /*Decrease the inflight counter*/ + if(ctx_p->flow_mode == BYPASS && ctx_p->drvdata->inflight_counter > 0) + ctx_p->drvdata->inflight_counter--; + + if(areq){ + ablkcipher_request_complete(areq, completion_error); + return 0; + } + return completion_error; +} + +static int ssi_blkcipher_process( + struct crypto_tfm *tfm, + struct blkcipher_req_ctx *req_ctx, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes, + void *info, //req info + unsigned int ivsize, + void *areq, + enum drv_crypto_direction direction) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct device *dev = &ctx_p->drvdata->plat_dev->dev; + HwDesc_s desc[MAX_ABLKCIPHER_SEQ_LEN]; + struct ssi_crypto_req ssi_req = {}; + int rc, seq_len = 0,cts_restore_flag = 0; + DECL_CYCLE_COUNT_RESOURCES; + + SSI_LOG_DEBUG("%s areq=%p info=%p nbytes=%d\n", + ((direction==DRV_CRYPTO_DIRECTION_ENCRYPT)?"Encrypt":"Decrypt"), + areq, info, nbytes); + + /* STAT_PHASE_0: Init and sanity checks */ + START_CYCLE_COUNT(); + + /* TODO: check data length according to mode */ + if (unlikely(validate_data_size(ctx_p, nbytes))) { + SSI_LOG_ERR("Unsupported data size %d.\n", nbytes); + crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_BLOCK_LEN); + return -EINVAL; + } + if (nbytes == 0) { + /* No data to process is valid */ + return 0; + } + /*For CTS in case of data size aligned to 16 use CBC mode*/ + if (((nbytes % AES_BLOCK_SIZE) == 0) && (ctx_p->cipher_mode == DRV_CIPHER_CBC_CTS)){ + + ctx_p->cipher_mode = DRV_CIPHER_CBC; + cts_restore_flag = 1; + } + + /* Setup DX request structure */ + ssi_req.user_cb = (void *)ssi_ablkcipher_complete; + ssi_req.user_arg = (void *)areq; + +#ifdef ENABLE_CYCLE_COUNT + ssi_req.op_type = (direction == DRV_CRYPTO_DIRECTION_DECRYPT) ? + STAT_OP_TYPE_DECODE : STAT_OP_TYPE_ENCODE; + +#endif + + /* Setup request context */ + req_ctx->gen_ctx.op_type = direction; + + END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_0); + + /* STAT_PHASE_1: Map buffers */ + START_CYCLE_COUNT(); + + rc = ssi_buffer_mgr_map_blkcipher_request(ctx_p->drvdata, req_ctx, ivsize, nbytes, info, src, dst); + if (unlikely(rc != 0)) { + SSI_LOG_ERR("map_request() failed\n"); + goto exit_process; + } + + END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_1); + + /* STAT_PHASE_2: Create sequence */ + START_CYCLE_COUNT(); + + /* Setup processing */ +#if SSI_CC_HAS_MULTI2 + if (ctx_p->flow_mode == S_DIN_to_MULTI2) { + ssi_blkcipher_create_multi2_setup_desc(tfm, + req_ctx, + ivsize, + desc, + &seq_len); + } else +#endif /*SSI_CC_HAS_MULTI2*/ + { + ssi_blkcipher_create_setup_desc(tfm, + req_ctx, + ivsize, + nbytes, + desc, + &seq_len); + } + /* Data processing */ + ssi_blkcipher_create_data_desc(tfm, + req_ctx, + dst, src, + nbytes, + areq, + desc, &seq_len); + + END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_2); + + /* STAT_PHASE_3: Lock HW and push sequence */ + START_CYCLE_COUNT(); + + rc = send_request(ctx_p->drvdata, &ssi_req, desc, seq_len, (areq == NULL)? 0:1); + if(areq != NULL) { + if (unlikely(rc != -EINPROGRESS)) { + /* Failed to send the request or request completed synchronously */ + ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst); + } + + END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_3); + } else { + if (rc != 0) { + ssi_buffer_mgr_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst); + END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_3); + } else { + END_CYCLE_COUNT(ssi_req.op_type, STAT_PHASE_3); + rc = ssi_blkcipher_complete(dev, ctx_p, req_ctx, dst, src, info, ivsize, NULL, ctx_p->drvdata->cc_base); + } + } + +exit_process: + if (cts_restore_flag != 0) + ctx_p->cipher_mode = DRV_CIPHER_CBC_CTS; + + return rc; +} + +static void ssi_ablkcipher_complete(struct device *dev, void *ssi_req, void __iomem *cc_base) +{ + struct ablkcipher_request *areq = (struct ablkcipher_request *)ssi_req; + struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(areq); + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq); + struct ssi_ablkcipher_ctx *ctx_p = crypto_ablkcipher_ctx(tfm); + unsigned int ivsize = crypto_ablkcipher_ivsize(tfm); + + ssi_blkcipher_complete(dev, ctx_p, req_ctx, areq->dst, areq->src, areq->info, ivsize, areq, cc_base); +} + + + +static int ssi_sblkcipher_init(struct crypto_tfm *tfm) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + + /* Allocate sync ctx buffer */ + ctx_p->sync_ctx = kmalloc(sizeof(struct blkcipher_req_ctx), GFP_KERNEL|GFP_DMA); + if (!ctx_p->sync_ctx) { + SSI_LOG_ERR("Allocating sync ctx buffer in context failed\n"); + return -ENOMEM; + } + SSI_LOG_DEBUG("Allocated sync ctx buffer in context ctx_p->sync_ctx=@%p\n", + ctx_p->sync_ctx); + + return ssi_blkcipher_init(tfm); +} + + +static void ssi_sblkcipher_exit(struct crypto_tfm *tfm) +{ + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + + kfree(ctx_p->sync_ctx); + SSI_LOG_DEBUG("Free sync ctx buffer in context ctx_p->sync_ctx=@%p\n", ctx_p->sync_ctx); + + ssi_blkcipher_exit(tfm); +} + +#ifdef SYNC_ALGS +static int ssi_sblkcipher_encrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + struct crypto_blkcipher *blk_tfm = desc->tfm; + struct crypto_tfm *tfm = crypto_blkcipher_tfm(blk_tfm); + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct blkcipher_req_ctx *req_ctx = ctx_p->sync_ctx; + unsigned int ivsize = crypto_blkcipher_ivsize(blk_tfm); + + req_ctx->backup_info = desc->info; + + return ssi_blkcipher_process(tfm, req_ctx, dst, src, nbytes, desc->info, ivsize, NULL, DRV_CRYPTO_DIRECTION_ENCRYPT); +} + +static int ssi_sblkcipher_decrypt(struct blkcipher_desc *desc, + struct scatterlist *dst, struct scatterlist *src, + unsigned int nbytes) +{ + struct crypto_blkcipher *blk_tfm = desc->tfm; + struct crypto_tfm *tfm = crypto_blkcipher_tfm(blk_tfm); + struct ssi_ablkcipher_ctx *ctx_p = crypto_tfm_ctx(tfm); + struct blkcipher_req_ctx *req_ctx = ctx_p->sync_ctx; + unsigned int ivsize = crypto_blkcipher_ivsize(blk_tfm); + + req_ctx->backup_info = desc->info; + + return ssi_blkcipher_process(tfm, req_ctx, dst, src, nbytes, desc->info, ivsize, NULL, DRV_CRYPTO_DIRECTION_DECRYPT); +} +#endif + +/* Async wrap functions */ + +static int ssi_ablkcipher_init(struct crypto_tfm *tfm) +{ + struct ablkcipher_tfm *ablktfm = &tfm->crt_ablkcipher; + + ablktfm->reqsize = sizeof(struct blkcipher_req_ctx); + + return ssi_blkcipher_init(tfm); +} + + +static int ssi_ablkcipher_setkey(struct crypto_ablkcipher *tfm, + const u8 *key, + unsigned int keylen) +{ + return ssi_blkcipher_setkey(crypto_ablkcipher_tfm(tfm), key, keylen); +} + +static int ssi_ablkcipher_encrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req); + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm); + struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req); + unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm); + + req_ctx->backup_info = req->info; + + return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src, req->nbytes, req->info, ivsize, (void *)req, DRV_CRYPTO_DIRECTION_ENCRYPT); +} + +static int ssi_ablkcipher_decrypt(struct ablkcipher_request *req) +{ + struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req); + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(ablk_tfm); + struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req); + unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm); + + req_ctx->backup_info = req->info; + return ssi_blkcipher_process(tfm, req_ctx, req->dst, req->src, req->nbytes, req->info, ivsize, (void *)req, DRV_CRYPTO_DIRECTION_DECRYPT); +} + + +/* DX Block cipher alg */ +static struct ssi_alg_template blkcipher_algs[] = { +/* Async template */ +#if SSI_CC_HAS_AES_XTS + { + .name = "xts(aes)", + .driver_name = "xts-aes-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + .geniv = "eseqiv", + }, + .cipher_mode = DRV_CIPHER_XTS, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "xts(aes)", + .driver_name = "xts-aes-du512-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_BULK_DU_512, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_XTS, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "xts(aes)", + .driver_name = "xts-aes-du4096-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_BULK_DU_4096, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_XTS, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, +#endif /*SSI_CC_HAS_AES_XTS*/ +#if SSI_CC_HAS_AES_ESSIV + { + .name = "essiv(aes)", + .driver_name = "essiv-aes-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_ESSIV, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "essiv(aes)", + .driver_name = "essiv-aes-du512-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_BULK_DU_512, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_ESSIV, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "essiv(aes)", + .driver_name = "essiv-aes-du4096-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_BULK_DU_4096, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_ESSIV, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, +#endif /*SSI_CC_HAS_AES_ESSIV*/ +#if SSI_CC_HAS_AES_BITLOCKER + { + .name = "bitlocker(aes)", + .driver_name = "bitlocker-aes-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_BITLOCKER, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "bitlocker(aes)", + .driver_name = "bitlocker-aes-du512-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_BULK_DU_512, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_BITLOCKER, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "bitlocker(aes)", + .driver_name = "bitlocker-aes-du4096-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_BULK_DU_4096, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE * 2, + .max_keysize = AES_MAX_KEY_SIZE * 2, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_BITLOCKER, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, +#endif /*SSI_CC_HAS_AES_BITLOCKER*/ + { + .name = "ecb(aes)", + .driver_name = "ecb-aes-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "cbc(aes)", + .driver_name = "cbc-aes-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "ofb(aes)", + .driver_name = "ofb-aes-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_OFB, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, +#if SSI_CC_HAS_AES_CTS + { + .name = "cts1(cbc(aes))", + .driver_name = "cts1-cbc-aes-dx", + .blocksize = AES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC_CTS, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, +#endif + { + .name = "ctr(aes)", + .driver_name = "ctr-aes-dx", + .blocksize = 1, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CTR, + .flow_mode = S_DIN_to_AES, + .synchronous = false, + }, + { + .name = "cbc(des3_ede)", + .driver_name = "cbc-3des-dx", + .blocksize = DES3_EDE_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = DES3_EDE_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_DES, + .synchronous = false, + }, + { + .name = "ecb(des3_ede)", + .driver_name = "ecb-3des-dx", + .blocksize = DES3_EDE_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = DES3_EDE_KEY_SIZE, + .max_keysize = DES3_EDE_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_DES, + .synchronous = false, + }, + { + .name = "cbc(des)", + .driver_name = "cbc-des-dx", + .blocksize = DES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + }, + .cipher_mode = DRV_CIPHER_CBC, + .flow_mode = S_DIN_to_DES, + .synchronous = false, + }, + { + .name = "ecb(des)", + .driver_name = "ecb-des-dx", + .blocksize = DES_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = 0, + }, + .cipher_mode = DRV_CIPHER_ECB, + .flow_mode = S_DIN_to_DES, + .synchronous = false, + }, +#if SSI_CC_HAS_MULTI2 + { + .name = "cbc(multi2)", + .driver_name = "cbc-multi2-dx", + .blocksize = CC_MULTI2_BLOCK_SIZE, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_decrypt, + .min_keysize = CC_MULTI2_SYSTEM_N_DATA_KEY_SIZE + 1, + .max_keysize = CC_MULTI2_SYSTEM_N_DATA_KEY_SIZE + 1, + .ivsize = CC_MULTI2_IV_SIZE, + }, + .cipher_mode = DRV_MULTI2_CBC, + .flow_mode = S_DIN_to_MULTI2, + .synchronous = false, + }, + { + .name = "ofb(multi2)", + .driver_name = "ofb-multi2-dx", + .blocksize = 1, + .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .template_ablkcipher = { + .setkey = ssi_ablkcipher_setkey, + .encrypt = ssi_ablkcipher_encrypt, + .decrypt = ssi_ablkcipher_encrypt, + .min_keysize = CC_MULTI2_SYSTEM_N_DATA_KEY_SIZE + 1, + .max_keysize = CC_MULTI2_SYSTEM_N_DATA_KEY_SIZE + 1, + .ivsize = CC_MULTI2_IV_SIZE, + }, + .cipher_mode = DRV_MULTI2_OFB, + .flow_mode = S_DIN_to_MULTI2, + .synchronous = false, + }, +#endif /*SSI_CC_HAS_MULTI2*/ +}; + +static +struct ssi_crypto_alg *ssi_ablkcipher_create_alg(struct ssi_alg_template *template) +{ + struct ssi_crypto_alg *t_alg; + struct crypto_alg *alg; + + t_alg = kzalloc(sizeof(struct ssi_crypto_alg), GFP_KERNEL); + if (!t_alg) { + SSI_LOG_ERR("failed to allocate t_alg\n"); + return ERR_PTR(-ENOMEM); + } + + alg = &t_alg->crypto_alg; + + snprintf(alg->cra_name, CRYPTO_MAX_ALG_NAME, "%s", template->name); + snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", + template->driver_name); + alg->cra_module = THIS_MODULE; + alg->cra_priority = SSI_CRA_PRIO; + alg->cra_blocksize = template->blocksize; + alg->cra_alignmask = 0; + alg->cra_ctxsize = sizeof(struct ssi_ablkcipher_ctx); + + alg->cra_init = template->synchronous? ssi_sblkcipher_init:ssi_ablkcipher_init; + alg->cra_exit = template->synchronous? ssi_sblkcipher_exit:ssi_blkcipher_exit; + alg->cra_type = template->synchronous? &crypto_blkcipher_type:&crypto_ablkcipher_type; + if(template->synchronous) { + alg->cra_blkcipher = template->template_sblkcipher; + alg->cra_flags = CRYPTO_ALG_KERN_DRIVER_ONLY | + template->type; + } else { + alg->cra_ablkcipher = template->template_ablkcipher; + alg->cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_KERN_DRIVER_ONLY | + template->type; + } + + t_alg->cipher_mode = template->cipher_mode; + t_alg->flow_mode = template->flow_mode; + + return t_alg; +} + +int ssi_ablkcipher_free(struct ssi_drvdata *drvdata) +{ + struct ssi_crypto_alg *t_alg, *n; + struct ssi_blkcipher_handle *blkcipher_handle = + drvdata->blkcipher_handle; + struct device *dev; + dev = &drvdata->plat_dev->dev; + + if (blkcipher_handle != NULL) { + /* Remove registered algs */ + list_for_each_entry_safe(t_alg, n, + &blkcipher_handle->blkcipher_alg_list, + entry) { + crypto_unregister_alg(&t_alg->crypto_alg); + list_del(&t_alg->entry); + kfree(t_alg); + } + kfree(blkcipher_handle); + drvdata->blkcipher_handle = NULL; + } + return 0; +} + + + +int ssi_ablkcipher_alloc(struct ssi_drvdata *drvdata) +{ + struct ssi_blkcipher_handle *ablkcipher_handle; + struct ssi_crypto_alg *t_alg; + int rc = -ENOMEM; + int alg; + + ablkcipher_handle = kmalloc(sizeof(struct ssi_blkcipher_handle), + GFP_KERNEL); + if (ablkcipher_handle == NULL) + return -ENOMEM; + + drvdata->blkcipher_handle = ablkcipher_handle; + + INIT_LIST_HEAD(&ablkcipher_handle->blkcipher_alg_list); + + /* Linux crypto */ + SSI_LOG_DEBUG("Number of algorithms = %zu\n", ARRAY_SIZE(blkcipher_algs)); + for (alg = 0; alg < ARRAY_SIZE(blkcipher_algs); alg++) { + SSI_LOG_DEBUG("creating %s\n", blkcipher_algs[alg].driver_name); + t_alg = ssi_ablkcipher_create_alg(&blkcipher_algs[alg]); + if (IS_ERR(t_alg)) { + rc = PTR_ERR(t_alg); + SSI_LOG_ERR("%s alg allocation failed\n", + blkcipher_algs[alg].driver_name); + goto fail0; + } + t_alg->drvdata = drvdata; + + SSI_LOG_DEBUG("registering %s\n", blkcipher_algs[alg].driver_name); + rc = crypto_register_alg(&t_alg->crypto_alg); + SSI_LOG_DEBUG("%s alg registration rc = %x\n", + t_alg->crypto_alg.cra_driver_name, rc); + if (unlikely(rc != 0)) { + SSI_LOG_ERR("%s alg registration failed\n", + t_alg->crypto_alg.cra_driver_name); + kfree(t_alg); + goto fail0; + } else { + list_add_tail(&t_alg->entry, + &ablkcipher_handle->blkcipher_alg_list); + SSI_LOG_DEBUG("Registered %s\n", + t_alg->crypto_alg.cra_driver_name); + } + } + return 0; + +fail0: + ssi_ablkcipher_free(drvdata); + return rc; +} diff --git a/drivers/staging/ccree/ssi_cipher.h b/drivers/staging/ccree/ssi_cipher.h new file mode 100644 index 000000000000..9ceb0b6e0fcb --- /dev/null +++ b/drivers/staging/ccree/ssi_cipher.h @@ -0,0 +1,88 @@ +/* + * Copyright (C) 2012-2017 ARM Limited or its affiliates. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * 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, see . + */ + +/* \file ssi_cipher.h + ARM CryptoCell Cipher Crypto API + */ + +#ifndef __SSI_CIPHER_H__ +#define __SSI_CIPHER_H__ + +#include +#include +#include "ssi_driver.h" +#include "ssi_buffer_mgr.h" + + +/* Crypto cipher flags */ +#define CC_CRYPTO_CIPHER_KEY_KFDE0 (1 << 0) +#define CC_CRYPTO_CIPHER_KEY_KFDE1 (1 << 1) +#define CC_CRYPTO_CIPHER_KEY_KFDE2 (1 << 2) +#define CC_CRYPTO_CIPHER_KEY_KFDE3 (1 << 3) +#define CC_CRYPTO_CIPHER_DU_SIZE_512B (1 << 4) + +#define CC_CRYPTO_CIPHER_KEY_KFDE_MASK (CC_CRYPTO_CIPHER_KEY_KFDE0 | CC_CRYPTO_CIPHER_KEY_KFDE1 | CC_CRYPTO_CIPHER_KEY_KFDE2 | CC_CRYPTO_CIPHER_KEY_KFDE3) + + +struct blkcipher_req_ctx { + struct async_gen_req_ctx gen_ctx; + enum ssi_req_dma_buf_type dma_buf_type; + uint32_t in_nents; + uint32_t in_mlli_nents; + uint32_t out_nents; + uint32_t out_mlli_nents; + uint8_t *backup_info; /*store iv for generated IV flow*/ + struct mlli_params mlli_params; +}; + + + +int ssi_ablkcipher_alloc(struct ssi_drvdata *drvdata); + +int ssi_ablkcipher_free(struct ssi_drvdata *drvdata); + +#ifndef CRYPTO_ALG_BULK_MASK + +#define CRYPTO_ALG_BULK_DU_512 0x00002000 +#define CRYPTO_ALG_BULK_DU_4096 0x00004000 +#define CRYPTO_ALG_BULK_MASK (CRYPTO_ALG_BULK_DU_512 |\ + CRYPTO_ALG_BULK_DU_4096) +#endif /* CRYPTO_ALG_BULK_MASK */ + + +#ifdef CRYPTO_TFM_REQ_HW_KEY + +static inline bool ssi_is_hw_key(struct crypto_tfm *tfm) +{ + return (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_HW_KEY); +} + +#else + +struct arm_hw_key_info { + int hw_key1; + int hw_key2; +}; + +static inline bool ssi_is_hw_key(struct crypto_tfm *tfm) +{ + return 0; +} + +#endif /* CRYPTO_TFM_REQ_HW_KEY */ + + +#endif /*__SSI_CIPHER_H__*/ diff --git a/drivers/staging/ccree/ssi_driver.c b/drivers/staging/ccree/ssi_driver.c index 8042fa2f754a..7f7807d1c5d9 100644 --- a/drivers/staging/ccree/ssi_driver.c +++ b/drivers/staging/ccree/ssi_driver.c @@ -23,6 +23,7 @@ #include #include #include +#include #include #include @@ -61,6 +62,7 @@ #include "ssi_request_mgr.h" #include "ssi_buffer_mgr.h" #include "ssi_sysfs.h" +#include "ssi_cipher.h" #include "ssi_hash.h" #include "ssi_sram_mgr.h" #include "ssi_pm.h" @@ -219,6 +221,9 @@ static int init_cc_resources(struct platform_device *plat_dev) goto init_cc_res_err; } + /*Initialize inflight counter used in dx_ablkcipher_secure_complete used for count of BYSPASS blocks operations*/ + new_drvdata->inflight_counter = 0; + dev_set_drvdata(&plat_dev->dev, new_drvdata); /* Get device resources */ /* First CC registers space */ @@ -343,6 +348,13 @@ static int init_cc_resources(struct platform_device *plat_dev) goto init_cc_res_err; } + /* Allocate crypto algs */ + rc = ssi_ablkcipher_alloc(new_drvdata); + if (unlikely(rc != 0)) { + SSI_LOG_ERR("ssi_ablkcipher_alloc failed\n"); + goto init_cc_res_err; + } + rc = ssi_hash_alloc(new_drvdata); if (unlikely(rc != 0)) { SSI_LOG_ERR("ssi_hash_alloc failed\n"); @@ -356,6 +368,7 @@ init_cc_res_err: if (new_drvdata != NULL) { ssi_hash_free(new_drvdata); + ssi_ablkcipher_free(new_drvdata); ssi_power_mgr_fini(new_drvdata); ssi_buffer_mgr_fini(new_drvdata); request_mgr_fini(new_drvdata); @@ -396,6 +409,7 @@ static void cleanup_cc_resources(struct platform_device *plat_dev) (struct ssi_drvdata *)dev_get_drvdata(&plat_dev->dev); ssi_hash_free(drvdata); + ssi_ablkcipher_free(drvdata); ssi_power_mgr_fini(drvdata); ssi_buffer_mgr_fini(drvdata); request_mgr_fini(drvdata); diff --git a/drivers/staging/ccree/ssi_driver.h b/drivers/staging/ccree/ssi_driver.h index e080088f86a3..49931be01fbb 100644 --- a/drivers/staging/ccree/ssi_driver.h +++ b/drivers/staging/ccree/ssi_driver.h @@ -29,6 +29,7 @@ #endif #include #include +#include #include #include #include @@ -141,15 +142,44 @@ struct ssi_drvdata { struct completion icache_setup_completion; void *buff_mgr_handle; void *hash_handle; + void *blkcipher_handle; void *request_mgr_handle; void *sram_mgr_handle; #ifdef ENABLE_CYCLE_COUNT cycles_t isr_exit_cycles; /* Save for isr-to-tasklet latency */ #endif + uint32_t inflight_counter; }; +struct ssi_crypto_alg { + struct list_head entry; + int cipher_mode; + int flow_mode; /* Note: currently, refers to the cipher mode only. */ + int auth_mode; + struct ssi_drvdata *drvdata; + struct crypto_alg crypto_alg; +}; + +struct ssi_alg_template { + char name[CRYPTO_MAX_ALG_NAME]; + char driver_name[CRYPTO_MAX_ALG_NAME]; + unsigned int blocksize; + u32 type; + union { + struct ablkcipher_alg ablkcipher; + struct blkcipher_alg blkcipher; + struct cipher_alg cipher; + struct compress_alg compress; + } template_u; + int cipher_mode; + int flow_mode; /* Note: currently, refers to the cipher mode only. */ + int auth_mode; + bool synchronous; + struct ssi_drvdata *drvdata; +}; + struct async_gen_req_ctx { dma_addr_t iv_dma_addr; enum drv_crypto_direction op_type;