Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 353 insertions, 0 deletions

diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h
new file mode 100644
index 000000000..c7816c83e
--- /dev/null
+++ b/drivers/crypto/chelsio/chcr_crypto.h
@@ -0,0 +1,353 @@
+/*
+ * This file is part of the Chelsio T6 Crypto driver for Linux.
+ *
+ * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
+ *
+ * This software is available to you under a choice of one of two
+ * licenses.  You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ *     Redistribution and use in source and binary forms, with or
+ *     without modification, are permitted provided that the following
+ *     conditions are met:
+ *
+ *      - Redistributions of source code must retain the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer.
+ *
+ *      - Redistributions in binary form must reproduce the above
+ *        copyright notice, this list of conditions and the following
+ *        disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ *
+ */
+
+#ifndef __CHCR_CRYPTO_H__
+#define __CHCR_CRYPTO_H__
+
+#define GHASH_BLOCK_SIZE    16
+#define GHASH_DIGEST_SIZE   16
+
+#define CCM_B0_SIZE             16
+#define CCM_AAD_FIELD_SIZE      2
+// 511 - 16(For IV)
+#define T6_MAX_AAD_SIZE 495
+
+
+/* Define following if h/w is not dropping the AAD and IV data before
+ * giving the processed data
+ */
+
+#define CHCR_CRA_PRIORITY 500
+#define CHCR_AEAD_PRIORITY 6000
+#define CHCR_AES_MAX_KEY_LEN  (2 * (AES_MAX_KEY_SIZE)) /* consider xts */
+#define CHCR_MAX_CRYPTO_IV_LEN 16 /* AES IV len */
+
+#define CHCR_MAX_AUTHENC_AES_KEY_LEN 32 /* max aes key length*/
+#define CHCR_MAX_AUTHENC_SHA_KEY_LEN 128 /* max sha key length*/
+
+#define CHCR_GIVENCRYPT_OP 2
+/* CPL/SCMD parameters */
+
+#define CHCR_ENCRYPT_OP 0
+#define CHCR_DECRYPT_OP 1
+
+#define CHCR_SCMD_SEQ_NO_CTRL_32BIT     1
+#define CHCR_SCMD_SEQ_NO_CTRL_48BIT     2
+#define CHCR_SCMD_SEQ_NO_CTRL_64BIT     3
+
+#define CHCR_SCMD_PROTO_VERSION_GENERIC 4
+
+#define CHCR_SCMD_AUTH_CTRL_AUTH_CIPHER 0
+#define CHCR_SCMD_AUTH_CTRL_CIPHER_AUTH 1
+
+#define CHCR_SCMD_CIPHER_MODE_NOP               0
+#define CHCR_SCMD_CIPHER_MODE_AES_CBC           1
+#define CHCR_SCMD_CIPHER_MODE_AES_GCM           2
+#define CHCR_SCMD_CIPHER_MODE_AES_CTR           3
+#define CHCR_SCMD_CIPHER_MODE_GENERIC_AES       4
+#define CHCR_SCMD_CIPHER_MODE_AES_XTS           6
+#define CHCR_SCMD_CIPHER_MODE_AES_CCM           7
+
+#define CHCR_SCMD_AUTH_MODE_NOP             0
+#define CHCR_SCMD_AUTH_MODE_SHA1            1
+#define CHCR_SCMD_AUTH_MODE_SHA224          2
+#define CHCR_SCMD_AUTH_MODE_SHA256          3
+#define CHCR_SCMD_AUTH_MODE_GHASH           4
+#define CHCR_SCMD_AUTH_MODE_SHA512_224      5
+#define CHCR_SCMD_AUTH_MODE_SHA512_256      6
+#define CHCR_SCMD_AUTH_MODE_SHA512_384      7
+#define CHCR_SCMD_AUTH_MODE_SHA512_512      8
+#define CHCR_SCMD_AUTH_MODE_CBCMAC          9
+#define CHCR_SCMD_AUTH_MODE_CMAC            10
+
+#define CHCR_SCMD_HMAC_CTRL_NOP             0
+#define CHCR_SCMD_HMAC_CTRL_NO_TRUNC        1
+#define CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366   2
+#define CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT     3
+#define CHCR_SCMD_HMAC_CTRL_PL1		    4
+#define CHCR_SCMD_HMAC_CTRL_PL2		    5
+#define CHCR_SCMD_HMAC_CTRL_PL3		    6
+#define CHCR_SCMD_HMAC_CTRL_DIV2	    7
+#define VERIFY_HW 0
+#define VERIFY_SW 1
+
+#define CHCR_SCMD_IVGEN_CTRL_HW             0
+#define CHCR_SCMD_IVGEN_CTRL_SW             1
+/* This are not really mac key size. They are intermediate values
+ * of sha engine and its size
+ */
+#define CHCR_KEYCTX_MAC_KEY_SIZE_128        0
+#define CHCR_KEYCTX_MAC_KEY_SIZE_160        1
+#define CHCR_KEYCTX_MAC_KEY_SIZE_192        2
+#define CHCR_KEYCTX_MAC_KEY_SIZE_256        3
+#define CHCR_KEYCTX_MAC_KEY_SIZE_512        4
+#define CHCR_KEYCTX_CIPHER_KEY_SIZE_128     0
+#define CHCR_KEYCTX_CIPHER_KEY_SIZE_192     1
+#define CHCR_KEYCTX_CIPHER_KEY_SIZE_256     2
+#define CHCR_KEYCTX_NO_KEY                  15
+
+#define CHCR_CPL_FW4_PLD_IV_OFFSET          (5 * 64) /* bytes. flt #5 and #6 */
+#define CHCR_CPL_FW4_PLD_HASH_RESULT_OFFSET (7 * 64) /* bytes. flt #7 */
+#define CHCR_CPL_FW4_PLD_DATA_SIZE          (4 * 64) /* bytes. flt #4 to #7 */
+
+#define KEY_CONTEXT_HDR_SALT_AND_PAD	    16
+#define flits_to_bytes(x)  (x * 8)
+
+#define IV_NOP                  0
+#define IV_IMMEDIATE            1
+#define IV_DSGL			2
+
+#define AEAD_H_SIZE             16
+
+#define CRYPTO_ALG_SUB_TYPE_MASK            0x0f000000
+#define CRYPTO_ALG_SUB_TYPE_HASH_HMAC       0x01000000
+#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106    0x02000000
+#define CRYPTO_ALG_SUB_TYPE_AEAD_GCM	    0x03000000
+#define CRYPTO_ALG_SUB_TYPE_CBC_SHA	    0x04000000
+#define CRYPTO_ALG_SUB_TYPE_AEAD_CCM        0x05000000
+#define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309    0x06000000
+#define CRYPTO_ALG_SUB_TYPE_CBC_NULL	    0x07000000
+#define CRYPTO_ALG_SUB_TYPE_CTR             0x08000000
+#define CRYPTO_ALG_SUB_TYPE_CTR_RFC3686     0x09000000
+#define CRYPTO_ALG_SUB_TYPE_XTS		    0x0a000000
+#define CRYPTO_ALG_SUB_TYPE_CBC		    0x0b000000
+#define CRYPTO_ALG_SUB_TYPE_CTR_SHA	    0x0c000000
+#define CRYPTO_ALG_SUB_TYPE_CTR_NULL   0x0d000000
+#define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\
+			      CRYPTO_ALG_SUB_TYPE_HASH_HMAC)
+
+#define MAX_SCRATCH_PAD_SIZE    32
+
+#define CHCR_HASH_MAX_BLOCK_SIZE_64  64
+#define CHCR_HASH_MAX_BLOCK_SIZE_128 128
+#define CHCR_SRC_SG_SIZE (0x10000 - sizeof(int))
+#define CHCR_DST_SG_SIZE 2048
+
+static inline struct chcr_context *a_ctx(struct crypto_aead *tfm)
+{
+	return crypto_aead_ctx(tfm);
+}
+
+static inline struct chcr_context *c_ctx(struct crypto_skcipher *tfm)
+{
+	return crypto_skcipher_ctx(tfm);
+}
+
+static inline struct chcr_context *h_ctx(struct crypto_ahash *tfm)
+{
+	return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
+}
+
+struct ablk_ctx {
+	struct crypto_skcipher *sw_cipher;
+	__be32 key_ctx_hdr;
+	unsigned int enckey_len;
+	unsigned char ciph_mode;
+	u8 key[CHCR_AES_MAX_KEY_LEN];
+	u8 nonce[4];
+	u8 rrkey[AES_MAX_KEY_SIZE];
+};
+struct chcr_aead_reqctx {
+	struct	sk_buff	*skb;
+	dma_addr_t iv_dma;
+	dma_addr_t b0_dma;
+	unsigned int b0_len;
+	unsigned int op;
+	u16 imm;
+	u16 verify;
+	u16 txqidx;
+	u16 rxqidx;
+	u8 iv[CHCR_MAX_CRYPTO_IV_LEN + MAX_SCRATCH_PAD_SIZE];
+	u8 *scratch_pad;
+};
+
+struct ulptx_walk {
+	struct ulptx_sgl *sgl;
+	unsigned int nents;
+	unsigned int pair_idx;
+	unsigned int last_sg_len;
+	struct scatterlist *last_sg;
+	struct ulptx_sge_pair *pair;
+
+};
+
+struct dsgl_walk {
+	unsigned int nents;
+	unsigned int last_sg_len;
+	struct scatterlist *last_sg;
+	struct cpl_rx_phys_dsgl *dsgl;
+	struct phys_sge_pairs *to;
+};
+
+struct chcr_gcm_ctx {
+	u8 ghash_h[AEAD_H_SIZE];
+};
+
+struct chcr_authenc_ctx {
+	u8 dec_rrkey[AES_MAX_KEY_SIZE];
+	u8 h_iopad[2 * CHCR_HASH_MAX_DIGEST_SIZE];
+	unsigned char auth_mode;
+};
+
+struct __aead_ctx {
+	union {
+		DECLARE_FLEX_ARRAY(struct chcr_gcm_ctx, gcm);
+		DECLARE_FLEX_ARRAY(struct chcr_authenc_ctx, authenc);
+	};
+};
+
+struct chcr_aead_ctx {
+	__be32 key_ctx_hdr;
+	unsigned int enckey_len;
+	struct crypto_aead *sw_cipher;
+	u8 salt[MAX_SALT];
+	u8 key[CHCR_AES_MAX_KEY_LEN];
+	u8 nonce[4];
+	u16 hmac_ctrl;
+	u16 mayverify;
+	struct	__aead_ctx ctx[];
+};
+
+struct hmac_ctx {
+	struct crypto_shash *base_hash;
+	u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128];
+	u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128];
+};
+
+struct __crypto_ctx {
+	union {
+		DECLARE_FLEX_ARRAY(struct hmac_ctx, hmacctx);
+		DECLARE_FLEX_ARRAY(struct ablk_ctx, ablkctx);
+		DECLARE_FLEX_ARRAY(struct chcr_aead_ctx, aeadctx);
+	};
+};
+
+struct chcr_context {
+	struct chcr_dev *dev;
+	unsigned char rxq_perchan;
+	unsigned char txq_perchan;
+	unsigned int  ntxq;
+	unsigned int  nrxq;
+	struct completion cbc_aes_aio_done;
+	struct __crypto_ctx crypto_ctx[];
+};
+
+struct chcr_hctx_per_wr {
+	struct scatterlist *srcsg;
+	struct sk_buff *skb;
+	dma_addr_t dma_addr;
+	u32 dma_len;
+	unsigned int src_ofst;
+	unsigned int processed;
+	u32 result;
+	u8 is_sg_map;
+	u8 imm;
+	/*Final callback called. Driver cannot rely on nbytes to decide
+	 * final call
+	 */
+	u8 isfinal;
+};
+
+struct chcr_ahash_req_ctx {
+	struct chcr_hctx_per_wr hctx_wr;
+	u8 *reqbfr;
+	u8 *skbfr;
+	/* SKB which is being sent to the hardware for processing */
+	u64 data_len;  /* Data len till time */
+	u16 txqidx;
+	u16 rxqidx;
+	u8 reqlen;
+	u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE];
+	u8 bfr1[CHCR_HASH_MAX_BLOCK_SIZE_128];
+	u8 bfr2[CHCR_HASH_MAX_BLOCK_SIZE_128];
+};
+
+struct chcr_skcipher_req_ctx {
+	struct sk_buff *skb;
+	struct scatterlist *dstsg;
+	unsigned int processed;
+	unsigned int last_req_len;
+	unsigned int partial_req;
+	struct scatterlist *srcsg;
+	unsigned int src_ofst;
+	unsigned int dst_ofst;
+	unsigned int op;
+	u16 imm;
+	u8 iv[CHCR_MAX_CRYPTO_IV_LEN];
+	u8 init_iv[CHCR_MAX_CRYPTO_IV_LEN];
+	u16 txqidx;
+	u16 rxqidx;
+	struct skcipher_request fallback_req;	// keep at the end
+};
+
+struct chcr_alg_template {
+	u32 type;
+	u32 is_registered;
+	union {
+		struct skcipher_alg skcipher;
+		struct ahash_alg hash;
+		struct aead_alg aead;
+	} alg;
+};
+
+typedef struct sk_buff *(*create_wr_t)(struct aead_request *req,
+				       unsigned short qid,
+				       int size);
+
+void chcr_verify_tag(struct aead_request *req, u8 *input, int *err);
+int chcr_aead_dma_map(struct device *dev, struct aead_request *req,
+		      unsigned short op_type);
+void chcr_aead_dma_unmap(struct device *dev, struct aead_request *req,
+			 unsigned short op_type);
+void chcr_add_aead_dst_ent(struct aead_request *req,
+			   struct cpl_rx_phys_dsgl *phys_cpl,
+			   unsigned short qid);
+void chcr_add_aead_src_ent(struct aead_request *req, struct ulptx_sgl *ulptx);
+void chcr_add_cipher_src_ent(struct skcipher_request *req,
+			     void *ulptx,
+			     struct  cipher_wr_param *wrparam);
+int chcr_cipher_dma_map(struct device *dev, struct skcipher_request *req);
+void chcr_cipher_dma_unmap(struct device *dev, struct skcipher_request *req);
+void chcr_add_cipher_dst_ent(struct skcipher_request *req,
+			     struct cpl_rx_phys_dsgl *phys_cpl,
+			     struct  cipher_wr_param *wrparam,
+			     unsigned short qid);
+int sg_nents_len_skip(struct scatterlist *sg, u64 len, u64 skip);
+void chcr_add_hash_src_ent(struct ahash_request *req, struct ulptx_sgl *ulptx,
+			   struct hash_wr_param *param);
+int chcr_hash_dma_map(struct device *dev, struct ahash_request *req);
+void chcr_hash_dma_unmap(struct device *dev, struct ahash_request *req);
+void chcr_aead_common_exit(struct aead_request *req);
+#endif /* __CHCR_CRYPTO_H__ */