diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel.h | 8 | ||||
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel_cipher.c | 52 |
2 files changed, 53 insertions, 7 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h index 0bc8859f9d06..ca6ece5607cd 100644 --- a/drivers/crypto/inside-secure/safexcel.h +++ b/drivers/crypto/inside-secure/safexcel.h @@ -339,6 +339,7 @@ struct safexcel_context_record { #define CONTEXT_CONTROL_IV3 BIT(8) #define CONTEXT_CONTROL_DIGEST_CNT BIT(9) #define CONTEXT_CONTROL_COUNTER_MODE BIT(10) +#define CONTEXT_CONTROL_CRYPTO_STORE BIT(12) #define CONTEXT_CONTROL_HASH_STORE BIT(19) /* The hash counter given to the engine in the context has a granularity of @@ -431,6 +432,10 @@ struct safexcel_token { #define EIP197_TOKEN_HASH_RESULT_VERIFY BIT(16) +#define EIP197_TOKEN_CTX_OFFSET(x) (x) +#define EIP197_TOKEN_DIRECTION_EXTERNAL BIT(11) +#define EIP197_TOKEN_EXEC_IF_SUCCESSFUL (0x1 << 12) + #define EIP197_TOKEN_STAT_LAST_HASH BIT(0) #define EIP197_TOKEN_STAT_LAST_PACKET BIT(1) #define EIP197_TOKEN_OPCODE_DIRECTION 0x0 @@ -438,6 +443,7 @@ struct safexcel_token { #define EIP197_TOKEN_OPCODE_NOOP EIP197_TOKEN_OPCODE_INSERT #define EIP197_TOKEN_OPCODE_RETRIEVE 0x4 #define EIP197_TOKEN_OPCODE_VERIFY 0xd +#define EIP197_TOKEN_OPCODE_CTX_ACCESS 0xe #define EIP197_TOKEN_OPCODE_BYPASS GENMASK(3, 0) static inline void eip197_noop_token(struct safexcel_token *token) @@ -448,6 +454,8 @@ static inline void eip197_noop_token(struct safexcel_token *token) /* Instructions */ #define EIP197_TOKEN_INS_INSERT_HASH_DIGEST 0x1c +#define EIP197_TOKEN_INS_ORIGIN_IV0 0x14 +#define EIP197_TOKEN_INS_ORIGIN_LEN(x) ((x) << 5) #define EIP197_TOKEN_INS_TYPE_OUTPUT BIT(5) #define EIP197_TOKEN_INS_TYPE_HASH BIT(6) #define EIP197_TOKEN_INS_TYPE_CRYTO BIT(7) diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index aca1cdf33362..cedfb121c278 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -59,26 +59,26 @@ static void safexcel_skcipher_token(struct safexcel_cipher_ctx *ctx, u8 *iv, u32 length) { struct safexcel_token *token; - unsigned offset = 0; + u32 offset = 0, block_sz = 0; if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) { switch (ctx->alg) { case SAFEXCEL_DES: - offset = DES_BLOCK_SIZE / sizeof(u32); - memcpy(cdesc->control_data.token, iv, DES_BLOCK_SIZE); + block_sz = DES_BLOCK_SIZE; cdesc->control_data.options |= EIP197_OPTION_2_TOKEN_IV_CMD; break; case SAFEXCEL_3DES: - offset = DES3_EDE_BLOCK_SIZE / sizeof(u32); - memcpy(cdesc->control_data.token, iv, DES3_EDE_BLOCK_SIZE); + block_sz = DES3_EDE_BLOCK_SIZE; cdesc->control_data.options |= EIP197_OPTION_2_TOKEN_IV_CMD; break; case SAFEXCEL_AES: - offset = AES_BLOCK_SIZE / sizeof(u32); - memcpy(cdesc->control_data.token, iv, AES_BLOCK_SIZE); + block_sz = AES_BLOCK_SIZE; cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD; break; } + + offset = block_sz / sizeof(u32); + memcpy(cdesc->control_data.token, iv, block_sz); } token = (struct safexcel_token *)(cdesc->control_data.token + offset); @@ -90,6 +90,25 @@ static void safexcel_skcipher_token(struct safexcel_cipher_ctx *ctx, u8 *iv, token[0].instructions = EIP197_TOKEN_INS_LAST | EIP197_TOKEN_INS_TYPE_CRYTO | EIP197_TOKEN_INS_TYPE_OUTPUT; + + if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) { + u32 last = (EIP197_MAX_TOKENS - 1) - offset; + + token[last].opcode = EIP197_TOKEN_OPCODE_CTX_ACCESS; + token[last].packet_length = EIP197_TOKEN_DIRECTION_EXTERNAL | + EIP197_TOKEN_EXEC_IF_SUCCESSFUL| + EIP197_TOKEN_CTX_OFFSET(0x2); + token[last].stat = EIP197_TOKEN_STAT_LAST_HASH | + EIP197_TOKEN_STAT_LAST_PACKET; + token[last].instructions = + EIP197_TOKEN_INS_ORIGIN_LEN(block_sz / sizeof(u32)) | + EIP197_TOKEN_INS_ORIGIN_IV0; + + /* Store the updated IV values back in the internal context + * registers. + */ + cdesc->control_data.control1 |= CONTEXT_CONTROL_CRYPTO_STORE; + } } static void safexcel_aead_token(struct safexcel_cipher_ctx *ctx, u8 *iv, @@ -559,6 +578,7 @@ static int safexcel_skcipher_handle_result(struct safexcel_crypto_priv *priv, { struct skcipher_request *req = skcipher_request_cast(async); struct safexcel_cipher_req *sreq = skcipher_request_ctx(req); + struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(async->tfm); int err; if (sreq->needs_inv) { @@ -569,6 +589,24 @@ static int safexcel_skcipher_handle_result(struct safexcel_crypto_priv *priv, err = safexcel_handle_req_result(priv, ring, async, req->src, req->dst, req->cryptlen, sreq, should_complete, ret); + + if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) { + u32 block_sz = 0; + + switch (ctx->alg) { + case SAFEXCEL_DES: + block_sz = DES_BLOCK_SIZE; + break; + case SAFEXCEL_3DES: + block_sz = DES3_EDE_BLOCK_SIZE; + break; + case SAFEXCEL_AES: + block_sz = AES_BLOCK_SIZE; + break; + } + + memcpy(req->iv, ctx->base.ctxr->data, block_sz); + } } return err; |