2 * This file is part of the Chelsio T6 Crypto driver for Linux.
4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
36 #ifndef __CHCR_CRYPTO_H__
37 #define __CHCR_CRYPTO_H__
39 #define GHASH_BLOCK_SIZE 16
40 #define GHASH_DIGEST_SIZE 16
42 #define CCM_B0_SIZE 16
43 #define CCM_AAD_FIELD_SIZE 2
44 #define T6_MAX_AAD_SIZE 511
47 /* Define following if h/w is not dropping the AAD and IV data before
48 * giving the processed data
51 #define CHCR_CRA_PRIORITY 500
52 #define CHCR_AEAD_PRIORITY 6000
53 #define CHCR_AES_MAX_KEY_LEN (2 * (AES_MAX_KEY_SIZE)) /* consider xts */
54 #define CHCR_MAX_CRYPTO_IV_LEN 16 /* AES IV len */
56 #define CHCR_MAX_AUTHENC_AES_KEY_LEN 32 /* max aes key length*/
57 #define CHCR_MAX_AUTHENC_SHA_KEY_LEN 128 /* max sha key length*/
59 #define CHCR_GIVENCRYPT_OP 2
60 /* CPL/SCMD parameters */
62 #define CHCR_ENCRYPT_OP 0
63 #define CHCR_DECRYPT_OP 1
65 #define CHCR_SCMD_SEQ_NO_CTRL_32BIT 1
66 #define CHCR_SCMD_SEQ_NO_CTRL_48BIT 2
67 #define CHCR_SCMD_SEQ_NO_CTRL_64BIT 3
69 #define CHCR_SCMD_PROTO_VERSION_GENERIC 4
71 #define CHCR_SCMD_AUTH_CTRL_AUTH_CIPHER 0
72 #define CHCR_SCMD_AUTH_CTRL_CIPHER_AUTH 1
74 #define CHCR_SCMD_CIPHER_MODE_NOP 0
75 #define CHCR_SCMD_CIPHER_MODE_AES_CBC 1
76 #define CHCR_SCMD_CIPHER_MODE_AES_GCM 2
77 #define CHCR_SCMD_CIPHER_MODE_AES_CTR 3
78 #define CHCR_SCMD_CIPHER_MODE_GENERIC_AES 4
79 #define CHCR_SCMD_CIPHER_MODE_AES_XTS 6
80 #define CHCR_SCMD_CIPHER_MODE_AES_CCM 7
82 #define CHCR_SCMD_AUTH_MODE_NOP 0
83 #define CHCR_SCMD_AUTH_MODE_SHA1 1
84 #define CHCR_SCMD_AUTH_MODE_SHA224 2
85 #define CHCR_SCMD_AUTH_MODE_SHA256 3
86 #define CHCR_SCMD_AUTH_MODE_GHASH 4
87 #define CHCR_SCMD_AUTH_MODE_SHA512_224 5
88 #define CHCR_SCMD_AUTH_MODE_SHA512_256 6
89 #define CHCR_SCMD_AUTH_MODE_SHA512_384 7
90 #define CHCR_SCMD_AUTH_MODE_SHA512_512 8
91 #define CHCR_SCMD_AUTH_MODE_CBCMAC 9
92 #define CHCR_SCMD_AUTH_MODE_CMAC 10
94 #define CHCR_SCMD_HMAC_CTRL_NOP 0
95 #define CHCR_SCMD_HMAC_CTRL_NO_TRUNC 1
96 #define CHCR_SCMD_HMAC_CTRL_TRUNC_RFC4366 2
97 #define CHCR_SCMD_HMAC_CTRL_IPSEC_96BIT 3
98 #define CHCR_SCMD_HMAC_CTRL_PL1 4
99 #define CHCR_SCMD_HMAC_CTRL_PL2 5
100 #define CHCR_SCMD_HMAC_CTRL_PL3 6
101 #define CHCR_SCMD_HMAC_CTRL_DIV2 7
105 #define CHCR_SCMD_IVGEN_CTRL_HW 0
106 #define CHCR_SCMD_IVGEN_CTRL_SW 1
107 /* This are not really mac key size. They are intermediate values
108 * of sha engine and its size
110 #define CHCR_KEYCTX_MAC_KEY_SIZE_128 0
111 #define CHCR_KEYCTX_MAC_KEY_SIZE_160 1
112 #define CHCR_KEYCTX_MAC_KEY_SIZE_192 2
113 #define CHCR_KEYCTX_MAC_KEY_SIZE_256 3
114 #define CHCR_KEYCTX_MAC_KEY_SIZE_512 4
115 #define CHCR_KEYCTX_CIPHER_KEY_SIZE_128 0
116 #define CHCR_KEYCTX_CIPHER_KEY_SIZE_192 1
117 #define CHCR_KEYCTX_CIPHER_KEY_SIZE_256 2
118 #define CHCR_KEYCTX_NO_KEY 15
120 #define CHCR_CPL_FW4_PLD_IV_OFFSET (5 * 64) /* bytes. flt #5 and #6 */
121 #define CHCR_CPL_FW4_PLD_HASH_RESULT_OFFSET (7 * 64) /* bytes. flt #7 */
122 #define CHCR_CPL_FW4_PLD_DATA_SIZE (4 * 64) /* bytes. flt #4 to #7 */
124 #define KEY_CONTEXT_HDR_SALT_AND_PAD 16
125 #define flits_to_bytes(x) (x * 8)
128 #define IV_IMMEDIATE 1
131 #define AEAD_H_SIZE 16
133 #define CRYPTO_ALG_SUB_TYPE_MASK 0x0f000000
134 #define CRYPTO_ALG_SUB_TYPE_HASH_HMAC 0x01000000
135 #define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4106 0x02000000
136 #define CRYPTO_ALG_SUB_TYPE_AEAD_GCM 0x03000000
137 #define CRYPTO_ALG_SUB_TYPE_CBC_SHA 0x04000000
138 #define CRYPTO_ALG_SUB_TYPE_AEAD_CCM 0x05000000
139 #define CRYPTO_ALG_SUB_TYPE_AEAD_RFC4309 0x06000000
140 #define CRYPTO_ALG_SUB_TYPE_CBC_NULL 0x07000000
141 #define CRYPTO_ALG_SUB_TYPE_CTR 0x08000000
142 #define CRYPTO_ALG_SUB_TYPE_CTR_RFC3686 0x09000000
143 #define CRYPTO_ALG_SUB_TYPE_XTS 0x0a000000
144 #define CRYPTO_ALG_SUB_TYPE_CBC 0x0b000000
145 #define CRYPTO_ALG_SUB_TYPE_CTR_SHA 0x0c000000
146 #define CRYPTO_ALG_SUB_TYPE_CTR_NULL 0x0d000000
147 #define CRYPTO_ALG_TYPE_HMAC (CRYPTO_ALG_TYPE_AHASH |\
148 CRYPTO_ALG_SUB_TYPE_HASH_HMAC)
150 #define MAX_SCRATCH_PAD_SIZE 32
152 #define CHCR_HASH_MAX_BLOCK_SIZE_64 64
153 #define CHCR_HASH_MAX_BLOCK_SIZE_128 128
154 #define CHCR_SRC_SG_SIZE (0x10000 - sizeof(int))
155 #define CHCR_DST_SG_SIZE 2048
157 static inline struct chcr_context *a_ctx(struct crypto_aead *tfm)
159 return crypto_aead_ctx(tfm);
162 static inline struct chcr_context *c_ctx(struct crypto_ablkcipher *tfm)
164 return crypto_ablkcipher_ctx(tfm);
167 static inline struct chcr_context *h_ctx(struct crypto_ahash *tfm)
169 return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
173 struct crypto_skcipher *sw_cipher;
174 struct crypto_cipher *aes_generic;
176 unsigned int enckey_len;
177 unsigned char ciph_mode;
178 u8 key[CHCR_AES_MAX_KEY_LEN];
180 u8 rrkey[AES_MAX_KEY_SIZE];
182 struct chcr_aead_reqctx {
193 u8 iv[CHCR_MAX_CRYPTO_IV_LEN + MAX_SCRATCH_PAD_SIZE];
198 struct ulptx_sgl *sgl;
200 unsigned int pair_idx;
201 unsigned int last_sg_len;
202 struct scatterlist *last_sg;
203 struct ulptx_sge_pair *pair;
209 unsigned int last_sg_len;
210 struct scatterlist *last_sg;
211 struct cpl_rx_phys_dsgl *dsgl;
212 struct phys_sge_pairs *to;
215 struct chcr_gcm_ctx {
216 u8 ghash_h[AEAD_H_SIZE];
219 struct chcr_authenc_ctx {
220 u8 dec_rrkey[AES_MAX_KEY_SIZE];
221 u8 h_iopad[2 * CHCR_HASH_MAX_DIGEST_SIZE];
222 unsigned char auth_mode;
226 struct chcr_gcm_ctx gcm[0];
227 struct chcr_authenc_ctx authenc[0];
230 struct chcr_aead_ctx {
232 unsigned int enckey_len;
233 struct crypto_aead *sw_cipher;
235 u8 key[CHCR_AES_MAX_KEY_LEN];
239 struct __aead_ctx ctx[0];
243 struct crypto_shash *base_hash;
244 u8 ipad[CHCR_HASH_MAX_BLOCK_SIZE_128];
245 u8 opad[CHCR_HASH_MAX_BLOCK_SIZE_128];
248 struct __crypto_ctx {
249 struct hmac_ctx hmacctx[0];
250 struct ablk_ctx ablkctx[0];
251 struct chcr_aead_ctx aeadctx[0];
254 struct chcr_context {
255 struct chcr_dev *dev;
256 unsigned char tx_qidx;
257 unsigned char rx_qidx;
258 unsigned char tx_chan_id;
259 unsigned char pci_chan_id;
260 struct __crypto_ctx crypto_ctx[0];
263 struct chcr_hctx_per_wr {
264 struct scatterlist *srcsg;
268 unsigned int src_ofst;
269 unsigned int processed;
273 /*Final callback called. Driver cannot rely on nbytes to decide
279 struct chcr_ahash_req_ctx {
280 struct chcr_hctx_per_wr hctx_wr;
283 /* SKB which is being sent to the hardware for processing */
284 u64 data_len; /* Data len till time */
286 u8 partial_hash[CHCR_HASH_MAX_DIGEST_SIZE];
287 u8 bfr1[CHCR_HASH_MAX_BLOCK_SIZE_128];
288 u8 bfr2[CHCR_HASH_MAX_BLOCK_SIZE_128];
291 struct chcr_blkcipher_req_ctx {
293 struct scatterlist *dstsg;
294 unsigned int processed;
295 unsigned int last_req_len;
296 struct scatterlist *srcsg;
297 unsigned int src_ofst;
298 unsigned int dst_ofst;
301 u8 iv[CHCR_MAX_CRYPTO_IV_LEN];
304 struct chcr_alg_template {
308 struct crypto_alg crypto;
309 struct ahash_alg hash;
310 struct aead_alg aead;
314 typedef struct sk_buff *(*create_wr_t)(struct aead_request *req,
318 void chcr_verify_tag(struct aead_request *req, u8 *input, int *err);
319 int chcr_aead_dma_map(struct device *dev, struct aead_request *req,
320 unsigned short op_type);
321 void chcr_aead_dma_unmap(struct device *dev, struct aead_request *req,
322 unsigned short op_type);
323 void chcr_add_aead_dst_ent(struct aead_request *req,
324 struct cpl_rx_phys_dsgl *phys_cpl,
325 unsigned int assoclen,
327 void chcr_add_aead_src_ent(struct aead_request *req, struct ulptx_sgl *ulptx,
328 unsigned int assoclen);
329 void chcr_add_cipher_src_ent(struct ablkcipher_request *req,
331 struct cipher_wr_param *wrparam);
332 int chcr_cipher_dma_map(struct device *dev, struct ablkcipher_request *req);
333 void chcr_cipher_dma_unmap(struct device *dev, struct ablkcipher_request *req);
334 void chcr_add_cipher_dst_ent(struct ablkcipher_request *req,
335 struct cpl_rx_phys_dsgl *phys_cpl,
336 struct cipher_wr_param *wrparam,
338 int sg_nents_len_skip(struct scatterlist *sg, u64 len, u64 skip);
339 void chcr_add_hash_src_ent(struct ahash_request *req, struct ulptx_sgl *ulptx,
340 struct hash_wr_param *param);
341 int chcr_hash_dma_map(struct device *dev, struct ahash_request *req);
342 void chcr_hash_dma_unmap(struct device *dev, struct ahash_request *req);
343 void chcr_aead_common_exit(struct aead_request *req);
344 #endif /* __CHCR_CRYPTO_H__ */