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Message-Id: <1492693983-8175-4-git-send-email-gilad@benyossef.com>
Date: Thu, 20 Apr 2017 16:12:57 +0300
From: Gilad Ben-Yossef <gilad@...yossef.com>
To: Herbert Xu <herbert@...dor.apana.org.au>,
"David S. Miller" <davem@...emloft.net>,
Rob Herring <robh+dt@...nel.org>,
Mark Rutland <mark.rutland@....com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
devel@...verdev.osuosl.org
Cc: linux-crypto@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, gilad.benyossef@....com,
Binoy Jayan <binoy.jayan@...aro.org>,
Ofir Drang <ofir.drang@....com>,
Stuart Yoder <stuart.yoder@....com>
Subject: [PATCH v2 3/9] staging: ccree: add skcipher support
Add CryptoCell skcipher support
Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
---
drivers/staging/ccree/Kconfig | 8 +
drivers/staging/ccree/Makefile | 2 +-
drivers/staging/ccree/cc_crypto_ctx.h | 21 +
drivers/staging/ccree/ssi_buffer_mgr.c | 147 ++++
drivers/staging/ccree/ssi_buffer_mgr.h | 16 +
drivers/staging/ccree/ssi_cipher.c | 1440 ++++++++++++++++++++++++++++++++
drivers/staging/ccree/ssi_cipher.h | 88 ++
drivers/staging/ccree/ssi_driver.c | 14 +
drivers/staging/ccree/ssi_driver.h | 30 +
9 files changed, 1765 insertions(+), 1 deletion(-)
create mode 100644 drivers/staging/ccree/ssi_cipher.c
create mode 100644 drivers/staging/ccree/ssi_cipher.h
diff --git a/drivers/staging/ccree/Kconfig b/drivers/staging/ccree/Kconfig
index a528a99..3fff040 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 f94e225..21a80d5 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 fedf259..f198779 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 5144eaa..a0fafa9 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 ccac5ce..2c58a63 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 0000000..01467e8
--- /dev/null
+++ b/drivers/staging/ccree/ssi_cipher.c
@@ -0,0 +1,1440 @@
+/*
+ * Copyright (C) 2012-2016 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 as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/semaphore.h>
+#include <crypto/algapi.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/aes.h>
+#include <crypto/ctr.h>
+#include <crypto/des.h>
+
+#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 0000000..511800f1
--- /dev/null
+++ b/drivers/staging/ccree/ssi_cipher.h
@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2012-2016 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 as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * for more details.
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ */
+
+/* \file ssi_cipher.h
+ ARM CryptoCell Cipher Crypto API
+ */
+
+#ifndef __SSI_CIPHER_H__
+#define __SSI_CIPHER_H__
+
+#include <linux/kernel.h>
+#include <crypto/algapi.h>
+#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 95e27c2..1310ac5 100644
--- a/drivers/staging/ccree/ssi_driver.c
+++ b/drivers/staging/ccree/ssi_driver.c
@@ -23,6 +23,7 @@
#include <crypto/sha.h>
#include <crypto/authenc.h>
#include <crypto/scatterwalk.h>
+#include <crypto/internal/skcipher.h>
#include <linux/init.h>
#include <linux/moduleparam.h>
@@ -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 @@ static int init_cc_resources(struct platform_device *plat_dev)
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 9aa5d30..baac9bf 100644
--- a/drivers/staging/ccree/ssi_driver.h
+++ b/drivers/staging/ccree/ssi_driver.h
@@ -29,6 +29,7 @@
#endif
#include <linux/dma-mapping.h>
#include <crypto/algapi.h>
+#include <crypto/internal/skcipher.h>
#include <crypto/aes.h>
#include <crypto/sha.h>
#include <crypto/authenc.h>
@@ -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;
--
2.1.4
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