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-rw-r--r--drivers/crypto/chelsio/chcr_crypto.h352
1 files changed, 352 insertions, 0 deletions
diff --git a/drivers/crypto/chelsio/chcr_crypto.h b/drivers/crypto/chelsio/chcr_crypto.h
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index 0000000000..1d693b8436
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+++ b/drivers/crypto/chelsio/chcr_crypto.h
@@ -0,0 +1,352 @@
+/*
+ * 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 {
+ struct hmac_ctx hmacctx;
+ struct ablk_ctx ablkctx;
+ 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);
+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__ */