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Message-Id: <1515662239-1714-4-git-send-email-gilad@benyossef.com>
Date: Thu, 11 Jan 2018 09:17:10 +0000
From: Gilad Ben-Yossef <gilad@...yossef.com>
To: Herbert Xu <herbert@...dor.apana.org.au>,
"David S. Miller" <davem@...emloft.net>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Ofir Drang <ofir.drang@....com>, linux-kernel@...r.kernel.org,
linux-crypto@...r.kernel.org, devel@...verdev.osuosl.org
Subject: [PATCH 3/7] crypto: ccree: add ablkcipher support
Add CryptoCell ablkcipher support
Signed-off-by: Gilad Ben-Yossef <gilad@...yossef.com>
---
drivers/crypto/ccree/Makefile | 2 +-
drivers/crypto/ccree/cc_buffer_mgr.c | 125 ++++
drivers/crypto/ccree/cc_buffer_mgr.h | 10 +
drivers/crypto/ccree/cc_cipher.c | 1167 ++++++++++++++++++++++++++++++++++
drivers/crypto/ccree/cc_cipher.h | 74 +++
drivers/crypto/ccree/cc_driver.c | 11 +
drivers/crypto/ccree/cc_driver.h | 2 +
7 files changed, 1390 insertions(+), 1 deletion(-)
create mode 100644 drivers/crypto/ccree/cc_cipher.c
create mode 100644 drivers/crypto/ccree/cc_cipher.h
diff --git a/drivers/crypto/ccree/Makefile b/drivers/crypto/ccree/Makefile
index 6b204ab..a7fecad 100644
--- a/drivers/crypto/ccree/Makefile
+++ b/drivers/crypto/ccree/Makefile
@@ -1,6 +1,6 @@
# SPDX-License-Identifier: GPL-2.0
obj-$(CONFIG_CRYPTO_DEV_CCREE) := ccree.o
-ccree-y := cc_driver.o cc_buffer_mgr.o cc_request_mgr.o cc_ivgen.o cc_sram_mgr.o
+ccree-y := cc_driver.o cc_buffer_mgr.o cc_request_mgr.o cc_cipher.o cc_ivgen.o cc_sram_mgr.o
ccree-$(CONFIG_DEBUG_FS) += cc_debugfs.o
ccree-$(CONFIG_PM) += cc_pm.o
diff --git a/drivers/crypto/ccree/cc_buffer_mgr.c b/drivers/crypto/ccree/cc_buffer_mgr.c
index 4c67579..510993e 100644
--- a/drivers/crypto/ccree/cc_buffer_mgr.c
+++ b/drivers/crypto/ccree/cc_buffer_mgr.c
@@ -8,6 +8,7 @@
#include "cc_buffer_mgr.h"
#include "cc_lli_defs.h"
+#include "cc_cipher.h"
enum dma_buffer_type {
DMA_NULL_TYPE = -1,
@@ -347,6 +348,130 @@ static int cc_map_sg(struct device *dev, struct scatterlist *sg,
return 0;
}
+void cc_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 (req_ctx->gen_ctx.iv_dma_addr) {
+ dev_dbg(dev, "Unmapped iv: iv_dma_addr=%pad iv_size=%u\n",
+ &req_ctx->gen_ctx.iv_dma_addr, ivsize);
+ dma_unmap_single(dev, req_ctx->gen_ctx.iv_dma_addr,
+ ivsize,
+ req_ctx->is_giv ? DMA_BIDIRECTIONAL :
+ DMA_TO_DEVICE);
+ }
+ /* Release pool */
+ if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI &&
+ req_ctx->mlli_params.mlli_virt_addr) {
+ dma_pool_free(req_ctx->mlli_params.curr_pool,
+ req_ctx->mlli_params.mlli_virt_addr,
+ req_ctx->mlli_params.mlli_dma_addr);
+ }
+
+ dma_unmap_sg(dev, src, req_ctx->in_nents, DMA_BIDIRECTIONAL);
+ dev_dbg(dev, "Unmapped req->src=%pK\n", sg_virt(src));
+
+ if (src != dst) {
+ dma_unmap_sg(dev, dst, req_ctx->out_nents, DMA_BIDIRECTIONAL);
+ dev_dbg(dev, "Unmapped req->dst=%pK\n", sg_virt(dst));
+ }
+}
+
+int cc_map_blkcipher_request(struct cc_drvdata *drvdata, void *ctx,
+ unsigned int ivsize, unsigned int nbytes,
+ void *info, struct scatterlist *src,
+ struct scatterlist *dst, gfp_t flags)
+{
+ 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_to_dev(drvdata);
+ struct buffer_array sg_data;
+ u32 dummy = 0;
+ int rc = 0;
+ u32 mapped_nents = 0;
+
+ req_ctx->dma_buf_type = CC_DMA_BUF_DLLI;
+ mlli_params->curr_pool = NULL;
+ sg_data.num_of_buffers = 0;
+
+ /* Map IV buffer */
+ if (ivsize) {
+ dump_byte_array("iv", (u8 *)info, ivsize);
+ req_ctx->gen_ctx.iv_dma_addr =
+ dma_map_single(dev, (void *)info,
+ ivsize,
+ req_ctx->is_giv ? DMA_BIDIRECTIONAL :
+ DMA_TO_DEVICE);
+ if (dma_mapping_error(dev, req_ctx->gen_ctx.iv_dma_addr)) {
+ dev_err(dev, "Mapping iv %u B at va=%pK for DMA failed\n",
+ ivsize, info);
+ return -ENOMEM;
+ }
+ dev_dbg(dev, "Mapped iv %u B at va=%pK to dma=%pad\n",
+ ivsize, info, &req_ctx->gen_ctx.iv_dma_addr);
+ } else {
+ req_ctx->gen_ctx.iv_dma_addr = 0;
+ }
+
+ /* Map the src SGL */
+ rc = cc_map_sg(dev, src, nbytes, DMA_BIDIRECTIONAL, &req_ctx->in_nents,
+ LLI_MAX_NUM_OF_DATA_ENTRIES, &dummy, &mapped_nents);
+ if (rc) {
+ rc = -ENOMEM;
+ goto ablkcipher_exit;
+ }
+ if (mapped_nents > 1)
+ req_ctx->dma_buf_type = CC_DMA_BUF_MLLI;
+
+ if (src == dst) {
+ /* Handle inplace operation */
+ if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) {
+ req_ctx->out_nents = 0;
+ cc_add_sg_entry(dev, &sg_data, req_ctx->in_nents, src,
+ nbytes, 0, true,
+ &req_ctx->in_mlli_nents);
+ }
+ } else {
+ /* Map the dst sg */
+ if (cc_map_sg(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 = CC_DMA_BUF_MLLI;
+
+ if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) {
+ cc_add_sg_entry(dev, &sg_data, req_ctx->in_nents, src,
+ nbytes, 0, true,
+ &req_ctx->in_mlli_nents);
+ cc_add_sg_entry(dev, &sg_data, req_ctx->out_nents, dst,
+ nbytes, 0, true,
+ &req_ctx->out_mlli_nents);
+ }
+ }
+
+ if (req_ctx->dma_buf_type == CC_DMA_BUF_MLLI) {
+ mlli_params->curr_pool = buff_mgr->mlli_buffs_pool;
+ rc = cc_generate_mlli(dev, &sg_data, mlli_params, flags);
+ if (rc)
+ goto ablkcipher_exit;
+ }
+
+ dev_dbg(dev, "areq_ctx->dma_buf_type = %s\n",
+ cc_dma_buf_type(req_ctx->dma_buf_type));
+
+ return 0;
+
+ablkcipher_exit:
+ cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
+ return rc;
+}
+
int cc_buffer_mgr_init(struct cc_drvdata *drvdata)
{
struct buff_mgr_handle *buff_mgr_handle;
diff --git a/drivers/crypto/ccree/cc_buffer_mgr.h b/drivers/crypto/ccree/cc_buffer_mgr.h
index 93ef765..ff4a5ec 100644
--- a/drivers/crypto/ccree/cc_buffer_mgr.h
+++ b/drivers/crypto/ccree/cc_buffer_mgr.h
@@ -40,6 +40,16 @@ int cc_buffer_mgr_init(struct cc_drvdata *drvdata);
int cc_buffer_mgr_fini(struct cc_drvdata *drvdata);
+int cc_map_blkcipher_request(struct cc_drvdata *drvdata, void *ctx,
+ unsigned int ivsize, unsigned int nbytes,
+ void *info, struct scatterlist *src,
+ struct scatterlist *dst, gfp_t flags);
+
+void cc_unmap_blkcipher_request(struct device *dev, void *ctx,
+ unsigned int ivsize,
+ struct scatterlist *src,
+ struct scatterlist *dst);
+
int cc_map_hash_request_final(struct cc_drvdata *drvdata, void *ctx,
struct scatterlist *src, unsigned int nbytes,
bool do_update, gfp_t flags);
diff --git a/drivers/crypto/ccree/cc_cipher.c b/drivers/crypto/ccree/cc_cipher.c
new file mode 100644
index 0000000..8afdbc1
--- /dev/null
+++ b/drivers/crypto/ccree/cc_cipher.c
@@ -0,0 +1,1167 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <crypto/algapi.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/des.h>
+#include <crypto/xts.h>
+#include <crypto/scatterwalk.h>
+
+#include "cc_driver.h"
+#include "cc_lli_defs.h"
+#include "cc_buffer_mgr.h"
+#include "cc_cipher.h"
+#include "cc_request_mgr.h"
+
+#define MAX_ABLKCIPHER_SEQ_LEN 6
+
+#define template_ablkcipher template_u.ablkcipher
+
+#define CC_MIN_AES_XTS_SIZE 0x10
+#define CC_MAX_AES_XTS_SIZE 0x2000
+struct cc_cipher_handle {
+ struct list_head blkcipher_alg_list;
+};
+
+struct cc_user_key_info {
+ u8 *key;
+ dma_addr_t key_dma_addr;
+};
+
+struct cc_hw_key_info {
+ enum cc_hw_crypto_key key1_slot;
+ enum cc_hw_crypto_key key2_slot;
+};
+
+struct cc_cipher_ctx {
+ struct cc_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 cc_cipher_complete(struct device *dev, void *cc_req, int err);
+
+static int validate_keys_sizes(struct cc_cipher_ctx *ctx_p, u32 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 (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 (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 (size == DES3_EDE_KEY_SIZE || size == DES_KEY_SIZE)
+ return 0;
+ break;
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static int validate_data_size(struct cc_cipher_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 >= CC_MIN_AES_XTS_SIZE &&
+ size <= CC_MAX_AES_XTS_SIZE &&
+ IS_ALIGNED(size, AES_BLOCK_SIZE))
+ return 0;
+ break;
+ case DRV_CIPHER_CBC_CTS:
+ if (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 (IS_ALIGNED(size, AES_BLOCK_SIZE))
+ return 0;
+ break;
+ default:
+ break;
+ }
+ break;
+ case S_DIN_to_DES:
+ if (IS_ALIGNED(size, DES_BLOCK_SIZE))
+ return 0;
+ break;
+ default:
+ break;
+ }
+ return -EINVAL;
+}
+
+static unsigned int get_max_keysize(struct crypto_tfm *tfm)
+{
+ struct cc_crypto_alg *cc_alg =
+ container_of(tfm->__crt_alg, struct cc_crypto_alg,
+ crypto_alg);
+
+ if ((cc_alg->crypto_alg.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
+ CRYPTO_ALG_TYPE_ABLKCIPHER)
+ return cc_alg->crypto_alg.cra_ablkcipher.max_keysize;
+
+ if ((cc_alg->crypto_alg.cra_flags & CRYPTO_ALG_TYPE_MASK) ==
+ CRYPTO_ALG_TYPE_BLKCIPHER)
+ return cc_alg->crypto_alg.cra_blkcipher.max_keysize;
+
+ return 0;
+}
+
+static int cc_cipher_init(struct crypto_tfm *tfm)
+{
+ struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
+ struct crypto_alg *alg = tfm->__crt_alg;
+ struct cc_crypto_alg *cc_alg =
+ container_of(alg, struct cc_crypto_alg, crypto_alg);
+ struct device *dev = drvdata_to_dev(cc_alg->drvdata);
+ int rc = 0;
+ unsigned int max_key_buf_size = get_max_keysize(tfm);
+ struct ablkcipher_tfm *ablktfm = &tfm->crt_ablkcipher;
+
+ dev_dbg(dev, "Initializing context @%p for %s\n", ctx_p,
+ crypto_tfm_alg_name(tfm));
+
+ ablktfm->reqsize = sizeof(struct blkcipher_req_ctx);
+
+ ctx_p->cipher_mode = cc_alg->cipher_mode;
+ ctx_p->flow_mode = cc_alg->flow_mode;
+ ctx_p->drvdata = cc_alg->drvdata;
+
+ /* Allocate key buffer, cache line aligned */
+ ctx_p->user.key = kmalloc(max_key_buf_size, GFP_KERNEL);
+ if (!ctx_p->user.key)
+ return -ENOMEM;
+
+ dev_dbg(dev, "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)) {
+ dev_err(dev, "Mapping Key %u B at va=%pK for DMA failed\n",
+ max_key_buf_size, ctx_p->user.key);
+ return -ENOMEM;
+ }
+ dev_dbg(dev, "Mapped key %u B at va=%pK to dma=%pad\n",
+ max_key_buf_size, ctx_p->user.key, &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)) {
+ dev_err(dev, "Error allocating hash tfm for ESSIV.\n");
+ return PTR_ERR(ctx_p->shash_tfm);
+ }
+ }
+
+ return rc;
+}
+
+static void cc_cipher_exit(struct crypto_tfm *tfm)
+{
+ struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx_p->drvdata);
+ unsigned int max_key_buf_size = get_max_keysize(tfm);
+
+ dev_dbg(dev, "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 */
+ dma_unmap_single(dev, ctx_p->user.key_dma_addr, max_key_buf_size,
+ DMA_TO_DEVICE);
+ dev_dbg(dev, "Unmapped key buffer key_dma_addr=%pad\n",
+ &ctx_p->user.key_dma_addr);
+
+ /* Free key buffer in context */
+ kfree(ctx_p->user.key);
+ dev_dbg(dev, "Free key buffer in context. key=@%p\n", ctx_p->user.key);
+}
+
+struct tdes_keys {
+ u8 key1[DES_KEY_SIZE];
+ u8 key2[DES_KEY_SIZE];
+ u8 key3[DES_KEY_SIZE];
+};
+
+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};
+
+/* The function verifies that tdes keys are not weak.*/
+static int cc_verify_3des_keys(const u8 *key, unsigned int keylen)
+{
+ struct tdes_keys *tdes_key = (struct tdes_keys *)key;
+
+ /* verify key1 != key2 and key3 != key2*/
+ if ((memcmp((u8 *)tdes_key->key1, (u8 *)tdes_key->key2,
+ sizeof(tdes_key->key1)) == 0) ||
+ (memcmp((u8 *)tdes_key->key3, (u8 *)tdes_key->key2,
+ sizeof(tdes_key->key3)) == 0)) {
+ return -ENOEXEC;
+ }
+
+ return 0;
+}
+
+static enum cc_hw_crypto_key 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 cc_cipher_setkey(struct crypto_ablkcipher *atfm, const u8 *key,
+ unsigned int keylen)
+{
+ struct crypto_tfm *tfm = crypto_ablkcipher_tfm(atfm);
+ struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx_p->drvdata);
+ u32 tmp[DES_EXPKEY_WORDS];
+ unsigned int max_key_buf_size = get_max_keysize(tfm);
+
+ dev_dbg(dev, "Setting key in context @%p for %s. keylen=%u\n",
+ ctx_p, crypto_tfm_alg_name(tfm), keylen);
+ dump_byte_array("key", (u8 *)key, keylen);
+
+ /* STAT_PHASE_0: Init and sanity checks */
+
+ if (validate_keys_sizes(ctx_p, keylen)) {
+ dev_err(dev, "Unsupported key size %d.\n", keylen);
+ crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
+ return -EINVAL;
+ }
+
+ if (cc_is_hw_key(tfm)) {
+ /* setting HW key slots */
+ struct arm_hw_key_info *hki = (struct arm_hw_key_info *)key;
+
+ if (ctx_p->flow_mode != S_DIN_to_AES) {
+ dev_err(dev, "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 (ctx_p->hw.key1_slot == END_OF_KEYS) {
+ dev_err(dev, "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 (hki->hw_key1 == hki->hw_key2) {
+ dev_err(dev, "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 (ctx_p->hw.key2_slot == END_OF_KEYS) {
+ dev_err(dev, "Unsupported hw key2 number (%d)\n",
+ hki->hw_key2);
+ return -EINVAL;
+ }
+ }
+
+ ctx_p->keylen = keylen;
+ dev_dbg(dev, "cc_is_hw_key ret 0");
+
+ return 0;
+ }
+
+ // verify weak keys
+ if (ctx_p->flow_mode == S_DIN_to_DES) {
+ if (!des_ekey(tmp, key) &&
+ (crypto_tfm_get_flags(tfm) & CRYPTO_TFM_REQ_WEAK_KEY)) {
+ tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
+ dev_dbg(dev, "weak DES key");
+ return -EINVAL;
+ }
+ }
+ if (ctx_p->cipher_mode == DRV_CIPHER_XTS &&
+ xts_check_key(tfm, key, keylen)) {
+ dev_dbg(dev, "weak XTS key");
+ return -EINVAL;
+ }
+ if (ctx_p->flow_mode == S_DIN_to_DES &&
+ keylen == DES3_EDE_KEY_SIZE &&
+ cc_verify_3des_keys(key, keylen)) {
+ dev_dbg(dev, "weak 3DES key");
+ return -EINVAL;
+ }
+
+ /* STAT_PHASE_1: Copy key to ctx */
+ dma_sync_single_for_cpu(dev, ctx_p->user.key_dma_addr,
+ max_key_buf_size, DMA_TO_DEVICE);
+
+ 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) {
+ dev_err(dev, "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);
+ ctx_p->keylen = keylen;
+
+ dev_dbg(dev, "return safely");
+ return 0;
+}
+
+static void cc_setup_cipher_desc(struct crypto_tfm *tfm,
+ struct blkcipher_req_ctx *req_ctx,
+ unsigned int ivsize, unsigned int nbytes,
+ struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx_p->drvdata);
+ 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 cc_crypto_alg *cc_alg =
+ container_of(tfm->__crt_alg, struct cc_crypto_alg,
+ crypto_alg);
+
+ if ((cc_alg->crypto_alg.cra_flags & CRYPTO_ALG_BULK_MASK) ==
+ CRYPTO_ALG_BULK_DU_512)
+ du_size = 512;
+ if ((cc_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]);
+ set_din_type(&desc[*seq_size], DMA_DLLI, iv_dma_addr, ivsize,
+ NS_BIT);
+ set_cipher_config0(&desc[*seq_size], direction);
+ set_flow_mode(&desc[*seq_size], flow_mode);
+ set_cipher_mode(&desc[*seq_size], cipher_mode);
+ if (cipher_mode == DRV_CIPHER_CTR ||
+ cipher_mode == DRV_CIPHER_OFB) {
+ set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE1);
+ } else {
+ set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE0);
+ }
+ (*seq_size)++;
+ /*FALLTHROUGH*/
+ case DRV_CIPHER_ECB:
+ /* Load key */
+ hw_desc_init(&desc[*seq_size]);
+ set_cipher_mode(&desc[*seq_size], cipher_mode);
+ set_cipher_config0(&desc[*seq_size], direction);
+ if (flow_mode == S_DIN_to_AES) {
+ if (cc_is_hw_key(tfm)) {
+ set_hw_crypto_key(&desc[*seq_size],
+ ctx_p->hw.key1_slot);
+ } else {
+ set_din_type(&desc[*seq_size], DMA_DLLI,
+ key_dma_addr, ((key_len == 24) ?
+ AES_MAX_KEY_SIZE :
+ key_len), NS_BIT);
+ }
+ set_key_size_aes(&desc[*seq_size], key_len);
+ } else {
+ /*des*/
+ set_din_type(&desc[*seq_size], DMA_DLLI, key_dma_addr,
+ key_len, NS_BIT);
+ set_key_size_des(&desc[*seq_size], key_len);
+ }
+ set_flow_mode(&desc[*seq_size], flow_mode);
+ 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]);
+ set_cipher_mode(&desc[*seq_size], cipher_mode);
+ set_cipher_config0(&desc[*seq_size], direction);
+ if (cc_is_hw_key(tfm)) {
+ set_hw_crypto_key(&desc[*seq_size],
+ ctx_p->hw.key1_slot);
+ } else {
+ set_din_type(&desc[*seq_size], DMA_DLLI, key_dma_addr,
+ (key_len / 2), NS_BIT);
+ }
+ set_key_size_aes(&desc[*seq_size], (key_len / 2));
+ set_flow_mode(&desc[*seq_size], flow_mode);
+ set_setup_mode(&desc[*seq_size], SETUP_LOAD_KEY0);
+ (*seq_size)++;
+
+ /* load XEX key */
+ hw_desc_init(&desc[*seq_size]);
+ set_cipher_mode(&desc[*seq_size], cipher_mode);
+ set_cipher_config0(&desc[*seq_size], direction);
+ if (cc_is_hw_key(tfm)) {
+ set_hw_crypto_key(&desc[*seq_size],
+ ctx_p->hw.key2_slot);
+ } else {
+ set_din_type(&desc[*seq_size], DMA_DLLI,
+ (key_dma_addr + (key_len / 2)),
+ (key_len / 2), NS_BIT);
+ }
+ set_xex_data_unit_size(&desc[*seq_size], du_size);
+ set_flow_mode(&desc[*seq_size], S_DIN_to_AES2);
+ set_key_size_aes(&desc[*seq_size], (key_len / 2));
+ set_setup_mode(&desc[*seq_size], SETUP_LOAD_XEX_KEY);
+ (*seq_size)++;
+
+ /* Set state */
+ hw_desc_init(&desc[*seq_size]);
+ set_setup_mode(&desc[*seq_size], SETUP_LOAD_STATE1);
+ set_cipher_mode(&desc[*seq_size], cipher_mode);
+ set_cipher_config0(&desc[*seq_size], direction);
+ set_key_size_aes(&desc[*seq_size], (key_len / 2));
+ set_flow_mode(&desc[*seq_size], flow_mode);
+ set_din_type(&desc[*seq_size], DMA_DLLI, iv_dma_addr,
+ CC_AES_BLOCK_SIZE, NS_BIT);
+ (*seq_size)++;
+ break;
+ default:
+ dev_err(dev, "Unsupported cipher mode (%d)\n", cipher_mode);
+ }
+}
+
+static void cc_setup_cipher_data(struct crypto_tfm *tfm,
+ struct blkcipher_req_ctx *req_ctx,
+ struct scatterlist *dst,
+ struct scatterlist *src, unsigned int nbytes,
+ void *areq, struct cc_hw_desc desc[],
+ unsigned int *seq_size)
+{
+ struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx_p->drvdata);
+ 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;
+ default:
+ dev_err(dev, "invalid flow mode, flow_mode = %d\n", flow_mode);
+ return;
+ }
+ /* Process */
+ if (req_ctx->dma_buf_type == CC_DMA_BUF_DLLI) {
+ dev_dbg(dev, " data params addr %pad length 0x%X\n",
+ &sg_dma_address(src), nbytes);
+ dev_dbg(dev, " data params addr %pad length 0x%X\n",
+ &sg_dma_address(dst), nbytes);
+ hw_desc_init(&desc[*seq_size]);
+ set_din_type(&desc[*seq_size], DMA_DLLI, sg_dma_address(src),
+ nbytes, NS_BIT);
+ set_dout_dlli(&desc[*seq_size], sg_dma_address(dst),
+ nbytes, NS_BIT, (!areq ? 0 : 1));
+ if (areq)
+ set_queue_last_ind(&desc[*seq_size]);
+
+ set_flow_mode(&desc[*seq_size], flow_mode);
+ (*seq_size)++;
+ } else {
+ /* bypass */
+ dev_dbg(dev, " bypass params addr %pad length 0x%X addr 0x%08X\n",
+ &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]);
+ set_din_type(&desc[*seq_size], DMA_DLLI,
+ req_ctx->mlli_params.mlli_dma_addr,
+ req_ctx->mlli_params.mlli_len, NS_BIT);
+ set_dout_sram(&desc[*seq_size],
+ ctx_p->drvdata->mlli_sram_addr,
+ req_ctx->mlli_params.mlli_len);
+ set_flow_mode(&desc[*seq_size], BYPASS);
+ (*seq_size)++;
+
+ hw_desc_init(&desc[*seq_size]);
+ 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) {
+ dev_dbg(dev, " 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);
+ set_dout_mlli(&desc[*seq_size],
+ ctx_p->drvdata->mlli_sram_addr,
+ req_ctx->in_mlli_nents, NS_BIT,
+ (!areq ? 0 : 1));
+ } else {
+ dev_dbg(dev, " 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 +
+ (u32)LLI_ENTRY_BYTE_SIZE * req_ctx->in_nents);
+ 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 ? 0 : 1));
+ }
+ if (areq)
+ set_queue_last_ind(&desc[*seq_size]);
+
+ set_flow_mode(&desc[*seq_size], flow_mode);
+ (*seq_size)++;
+ }
+}
+
+static void cc_cipher_complete(struct device *dev, void *cc_req, int err)
+{
+ struct ablkcipher_request *areq = (struct ablkcipher_request *)cc_req;
+ struct scatterlist *dst = areq->dst;
+ struct scatterlist *src = areq->src;
+ struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(areq);
+ struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(areq);
+ unsigned int ivsize = crypto_ablkcipher_ivsize(tfm);
+ struct ablkcipher_request *req = (struct ablkcipher_request *)areq;
+
+ cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
+ kfree(req_ctx->iv);
+
+ /*
+ * The crypto API expects us to set the req->info to the last
+ * ciphertext block. For encrypt, simply copy from the result.
+ * For decrypt, we must copy from a saved buffer since this
+ * could be an in-place decryption operation and the src is
+ * lost by this point.
+ */
+ if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {
+ memcpy(req->info, req_ctx->backup_info, ivsize);
+ kfree(req_ctx->backup_info);
+ } else if (!err) {
+ scatterwalk_map_and_copy(req->info, req->dst,
+ (req->nbytes - ivsize),
+ ivsize, 0);
+ }
+
+ ablkcipher_request_complete(areq, err);
+}
+
+static int cc_cipher_process(struct ablkcipher_request *req,
+ enum drv_crypto_direction direction)
+{
+ 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);
+ struct scatterlist *dst = req->dst;
+ struct scatterlist *src = req->src;
+ unsigned int nbytes = req->nbytes;
+ void *info = req->info;
+ struct cc_cipher_ctx *ctx_p = crypto_tfm_ctx(tfm);
+ struct device *dev = drvdata_to_dev(ctx_p->drvdata);
+ struct cc_hw_desc desc[MAX_ABLKCIPHER_SEQ_LEN];
+ struct cc_crypto_req cc_req = {};
+ int rc, seq_len = 0, cts_restore_flag = 0;
+ gfp_t flags = cc_gfp_flags(&req->base);
+
+ dev_dbg(dev, "%s req=%p info=%p nbytes=%d\n",
+ ((direction == DRV_CRYPTO_DIRECTION_ENCRYPT) ?
+ "Encrypt" : "Decrypt"), req, info, nbytes);
+
+ /* STAT_PHASE_0: Init and sanity checks */
+
+ /* TODO: check data length according to mode */
+ if (validate_data_size(ctx_p, nbytes)) {
+ dev_err(dev, "Unsupported data size %d.\n", nbytes);
+ crypto_tfm_set_flags(tfm, CRYPTO_TFM_RES_BAD_BLOCK_LEN);
+ rc = -EINVAL;
+ goto exit_process;
+ }
+ if (nbytes == 0) {
+ /* No data to process is valid */
+ rc = 0;
+ goto exit_process;
+ }
+
+ /* The IV we are handed may be allocted from the stack so
+ * we must copy it to a DMAable buffer before use.
+ */
+ req_ctx->iv = kmalloc(ivsize, flags);
+ if (!req_ctx->iv) {
+ rc = -ENOMEM;
+ goto exit_process;
+ }
+ memcpy(req_ctx->iv, info, ivsize);
+
+ /*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 */
+ cc_req.user_cb = (void *)cc_cipher_complete;
+ cc_req.user_arg = (void *)req;
+
+#ifdef ENABLE_CYCLE_COUNT
+ cc_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;
+
+ /* STAT_PHASE_1: Map buffers */
+
+ rc = cc_map_blkcipher_request(ctx_p->drvdata, req_ctx, ivsize, nbytes,
+ req_ctx->iv, src, dst, flags);
+ if (rc) {
+ dev_err(dev, "map_request() failed\n");
+ goto exit_process;
+ }
+
+ /* STAT_PHASE_2: Create sequence */
+
+ /* Setup processing */
+ cc_setup_cipher_desc(tfm, req_ctx, ivsize, nbytes, desc, &seq_len);
+ /* Data processing */
+ cc_setup_cipher_data(tfm, req_ctx, dst, src, nbytes, req, desc,
+ &seq_len);
+
+ /* do we need to generate IV? */
+ if (req_ctx->is_giv) {
+ cc_req.ivgen_dma_addr[0] = req_ctx->gen_ctx.iv_dma_addr;
+ cc_req.ivgen_dma_addr_len = 1;
+ /* set the IV size (8/16 B long)*/
+ cc_req.ivgen_size = ivsize;
+ }
+
+ /* STAT_PHASE_3: Lock HW and push sequence */
+
+ rc = cc_send_request(ctx_p->drvdata, &cc_req, desc, seq_len,
+ &req->base);
+ if (rc != -EINPROGRESS && rc != -EBUSY) {
+ /* Failed to send the request or request completed
+ * synchronously
+ */
+ cc_unmap_blkcipher_request(dev, req_ctx, ivsize, src, dst);
+ }
+
+exit_process:
+ if (cts_restore_flag)
+ ctx_p->cipher_mode = DRV_CIPHER_CBC_CTS;
+
+ if (rc != -EINPROGRESS && rc != -EBUSY) {
+ kfree(req_ctx->backup_info);
+ kfree(req_ctx->iv);
+ }
+
+ return rc;
+}
+
+static int cc_cipher_encrypt(struct ablkcipher_request *req)
+{
+ struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);
+
+ req_ctx->is_giv = false;
+ req_ctx->backup_info = NULL;
+
+ return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_ENCRYPT);
+}
+
+static int cc_cipher_decrypt(struct ablkcipher_request *req)
+{
+ struct crypto_ablkcipher *ablk_tfm = crypto_ablkcipher_reqtfm(req);
+ struct blkcipher_req_ctx *req_ctx = ablkcipher_request_ctx(req);
+ unsigned int ivsize = crypto_ablkcipher_ivsize(ablk_tfm);
+ gfp_t flags = cc_gfp_flags(&req->base);
+
+ /*
+ * Allocate and save the last IV sized bytes of the source, which will
+ * be lost in case of in-place decryption and might be needed for CTS.
+ */
+ req_ctx->backup_info = kmalloc(ivsize, flags);
+ if (!req_ctx->backup_info)
+ return -ENOMEM;
+
+ scatterwalk_map_and_copy(req_ctx->backup_info, req->src,
+ (req->nbytes - ivsize), ivsize, 0);
+ req_ctx->is_giv = false;
+
+ return cc_cipher_process(req, DRV_CRYPTO_DIRECTION_DECRYPT);
+}
+
+/* DX Block cipher alg */
+static struct cc_alg_template blkcipher_algs[] = {
+ {
+ .name = "xts(aes)",
+ .driver_name = "xts-aes-dx",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .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 = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .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 = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "essiv(aes)",
+ .driver_name = "essiv-aes-dx",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .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 = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .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 = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "bitlocker(aes)",
+ .driver_name = "bitlocker-aes-dx",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .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 = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .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 = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "ecb(aes)",
+ .driver_name = "ecb-aes-dx",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "cbc(aes)",
+ .driver_name = "cbc-aes-dx",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "ofb(aes)",
+ .driver_name = "ofb-aes-dx",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "cts1(cbc(aes))",
+ .driver_name = "cts1-cbc-aes-dx",
+ .blocksize = AES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "ctr(aes)",
+ .driver_name = "ctr-aes-dx",
+ .blocksize = 1,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "cbc(des3_ede)",
+ .driver_name = "cbc-3des-dx",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "ecb(des3_ede)",
+ .driver_name = "ecb-3des-dx",
+ .blocksize = DES3_EDE_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "cbc(des)",
+ .driver_name = "cbc-des-dx",
+ .blocksize = DES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_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,
+ },
+ {
+ .name = "ecb(des)",
+ .driver_name = "ecb-des-dx",
+ .blocksize = DES_BLOCK_SIZE,
+ .type = CRYPTO_ALG_TYPE_ABLKCIPHER,
+ .template_ablkcipher = {
+ .setkey = cc_cipher_setkey,
+ .encrypt = cc_cipher_encrypt,
+ .decrypt = cc_cipher_decrypt,
+ .min_keysize = DES_KEY_SIZE,
+ .max_keysize = DES_KEY_SIZE,
+ .ivsize = 0,
+ },
+ .cipher_mode = DRV_CIPHER_ECB,
+ .flow_mode = S_DIN_to_DES,
+ },
+};
+
+static
+struct cc_crypto_alg *cc_cipher_create_alg(struct cc_alg_template *template,
+ struct device *dev)
+{
+ struct cc_crypto_alg *t_alg;
+ struct crypto_alg *alg;
+
+ t_alg = kzalloc(sizeof(*t_alg), GFP_KERNEL);
+ if (!t_alg)
+ 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 = CC_CRA_PRIO;
+ alg->cra_blocksize = template->blocksize;
+ alg->cra_alignmask = 0;
+ alg->cra_ctxsize = sizeof(struct cc_cipher_ctx);
+
+ alg->cra_init = cc_cipher_init;
+ alg->cra_exit = cc_cipher_exit;
+ alg->cra_type = &crypto_ablkcipher_type;
+ 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 cc_cipher_free(struct cc_drvdata *drvdata)
+{
+ struct cc_crypto_alg *t_alg, *n;
+ struct cc_cipher_handle *blkcipher_handle =
+ drvdata->blkcipher_handle;
+ if (blkcipher_handle) {
+ /* 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 cc_cipher_alloc(struct cc_drvdata *drvdata)
+{
+ struct cc_cipher_handle *ablkcipher_handle;
+ struct cc_crypto_alg *t_alg;
+ struct device *dev = drvdata_to_dev(drvdata);
+ int rc = -ENOMEM;
+ int alg;
+
+ ablkcipher_handle = kmalloc(sizeof(*ablkcipher_handle), GFP_KERNEL);
+ if (!ablkcipher_handle)
+ return -ENOMEM;
+
+ INIT_LIST_HEAD(&ablkcipher_handle->blkcipher_alg_list);
+ drvdata->blkcipher_handle = ablkcipher_handle;
+
+ /* Linux crypto */
+ dev_dbg(dev, "Number of algorithms = %zu\n",
+ ARRAY_SIZE(blkcipher_algs));
+ for (alg = 0; alg < ARRAY_SIZE(blkcipher_algs); alg++) {
+ dev_dbg(dev, "creating %s\n", blkcipher_algs[alg].driver_name);
+ t_alg = cc_cipher_create_alg(&blkcipher_algs[alg], dev);
+ if (IS_ERR(t_alg)) {
+ rc = PTR_ERR(t_alg);
+ dev_err(dev, "%s alg allocation failed\n",
+ blkcipher_algs[alg].driver_name);
+ goto fail0;
+ }
+ t_alg->drvdata = drvdata;
+
+ dev_dbg(dev, "registering %s\n",
+ blkcipher_algs[alg].driver_name);
+ rc = crypto_register_alg(&t_alg->crypto_alg);
+ dev_dbg(dev, "%s alg registration rc = %x\n",
+ t_alg->crypto_alg.cra_driver_name, rc);
+ if (rc) {
+ dev_err(dev, "%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);
+ dev_dbg(dev, "Registered %s\n",
+ t_alg->crypto_alg.cra_driver_name);
+ }
+ }
+ return 0;
+
+fail0:
+ cc_cipher_free(drvdata);
+ return rc;
+}
diff --git a/drivers/crypto/ccree/cc_cipher.h b/drivers/crypto/ccree/cc_cipher.h
new file mode 100644
index 0000000..4c181c7
--- /dev/null
+++ b/drivers/crypto/ccree/cc_cipher.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/* Copyright (C) 2012-2018 ARM Limited or its affiliates. */
+
+/* \file cc_cipher.h
+ * ARM CryptoCell Cipher Crypto API
+ */
+
+#ifndef __CC_CIPHER_H__
+#define __CC_CIPHER_H__
+
+#include <linux/kernel.h>
+#include <crypto/algapi.h>
+#include "cc_driver.h"
+#include "cc_buffer_mgr.h"
+
+/* Crypto cipher flags */
+#define CC_CRYPTO_CIPHER_KEY_KFDE0 BIT(0)
+#define CC_CRYPTO_CIPHER_KEY_KFDE1 BIT(1)
+#define CC_CRYPTO_CIPHER_KEY_KFDE2 BIT(2)
+#define CC_CRYPTO_CIPHER_KEY_KFDE3 BIT(3)
+#define CC_CRYPTO_CIPHER_DU_SIZE_512B BIT(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 cc_req_dma_buf_type dma_buf_type;
+ u32 in_nents;
+ u32 in_mlli_nents;
+ u32 out_nents;
+ u32 out_mlli_nents;
+ u8 *backup_info; /*store iv for generated IV flow*/
+ u8 *iv;
+ bool is_giv;
+ struct mlli_params mlli_params;
+};
+
+int cc_cipher_alloc(struct cc_drvdata *drvdata);
+
+int cc_cipher_free(struct cc_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 cc_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 cc_is_hw_key(struct crypto_tfm *tfm)
+{
+ return false;
+}
+
+#endif /* CRYPTO_TFM_REQ_HW_KEY */
+
+#endif /*__CC_CIPHER_H__*/
diff --git a/drivers/crypto/ccree/cc_driver.c b/drivers/crypto/ccree/cc_driver.c
index 941ca86..77393a6 100644
--- a/drivers/crypto/ccree/cc_driver.c
+++ b/drivers/crypto/ccree/cc_driver.c
@@ -19,6 +19,7 @@
#include "cc_request_mgr.h"
#include "cc_buffer_mgr.h"
#include "cc_debugfs.h"
+#include "cc_cipher.h"
#include "cc_ivgen.h"
#include "cc_sram_mgr.h"
#include "cc_pm.h"
@@ -279,8 +280,17 @@ static int init_cc_resources(struct platform_device *plat_dev)
goto post_power_mgr_err;
}
+ /* Allocate crypto algs */
+ rc = cc_cipher_alloc(new_drvdata);
+ if (rc) {
+ dev_err(dev, "cc_cipher_alloc failed\n");
+ goto post_ivgen_err;
+ }
+
return 0;
+post_ivgen_err:
+ cc_ivgen_fini(new_drvdata);
post_power_mgr_err:
cc_pm_fini(new_drvdata);
post_buf_mgr_err:
@@ -309,6 +319,7 @@ static void cleanup_cc_resources(struct platform_device *plat_dev)
struct cc_drvdata *drvdata =
(struct cc_drvdata *)platform_get_drvdata(plat_dev);
+ cc_cipher_free(drvdata);
cc_ivgen_fini(drvdata);
cc_pm_fini(drvdata);
cc_buffer_mgr_fini(drvdata);
diff --git a/drivers/crypto/ccree/cc_driver.h b/drivers/crypto/ccree/cc_driver.h
index b3be754..2e94957 100644
--- a/drivers/crypto/ccree/cc_driver.h
+++ b/drivers/crypto/ccree/cc_driver.h
@@ -15,6 +15,7 @@
#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>
@@ -109,6 +110,7 @@ struct cc_drvdata {
struct platform_device *plat_dev;
cc_sram_addr_t mlli_sram_addr;
void *buff_mgr_handle;
+ void *blkcipher_handle;
void *request_mgr_handle;
void *ivgen_handle;
void *sram_mgr_handle;
--
2.7.4
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