1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * AMD Cryptographic Coprocessor (CCP) crypto API support
5 * Copyright (C) 2013,2017 Advanced Micro Devices, Inc.
10 #ifndef __CCP_CRYPTO_H__
11 #define __CCP_CRYPTO_H__
13 #include <linux/list.h>
14 #include <linux/wait.h>
15 #include <linux/ccp.h>
16 #include <crypto/algapi.h>
17 #include <crypto/aes.h>
18 #include <crypto/internal/aead.h>
19 #include <crypto/aead.h>
20 #include <crypto/ctr.h>
21 #include <crypto/hash.h>
22 #include <crypto/sha.h>
23 #include <crypto/akcipher.h>
24 #include <crypto/skcipher.h>
25 #include <crypto/internal/rsa.h>
27 /* We want the module name in front of our messages */
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 #define CCP_LOG_LEVEL KERN_INFO
33 #define CCP_CRA_PRIORITY 300
35 struct ccp_crypto_skcipher_alg {
36 struct list_head entry;
40 struct skcipher_alg alg;
43 struct ccp_crypto_aead {
44 struct list_head entry;
51 struct ccp_crypto_ahash_alg {
52 struct list_head entry;
58 /* Child algorithm used for HMAC, CMAC, etc */
59 char child_alg[CRYPTO_MAX_ALG_NAME];
64 struct ccp_crypto_akcipher_alg {
65 struct list_head entry;
67 struct akcipher_alg alg;
70 static inline struct ccp_crypto_skcipher_alg *
71 ccp_crypto_skcipher_alg(struct crypto_skcipher *tfm)
73 struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
75 return container_of(alg, struct ccp_crypto_skcipher_alg, alg);
78 static inline struct ccp_crypto_ahash_alg *
79 ccp_crypto_ahash_alg(struct crypto_tfm *tfm)
81 struct crypto_alg *alg = tfm->__crt_alg;
82 struct ahash_alg *ahash_alg;
84 ahash_alg = container_of(alg, struct ahash_alg, halg.base);
86 return container_of(ahash_alg, struct ccp_crypto_ahash_alg, alg);
89 /***** AES related defines *****/
91 /* Fallback cipher for XTS with unsupported unit sizes */
92 struct crypto_skcipher *tfm_skcipher;
94 enum ccp_engine engine;
95 enum ccp_aes_type type;
96 enum ccp_aes_mode mode;
98 struct scatterlist key_sg;
100 u8 key[AES_MAX_KEY_SIZE * 2];
102 u8 nonce[CTR_RFC3686_NONCE_SIZE];
104 /* CMAC key structures */
105 struct scatterlist k1_sg;
106 struct scatterlist k2_sg;
108 u8 k1[AES_BLOCK_SIZE];
109 u8 k2[AES_BLOCK_SIZE];
112 struct ccp_aes_req_ctx {
113 struct scatterlist iv_sg;
114 u8 iv[AES_BLOCK_SIZE];
116 struct scatterlist tag_sg;
117 u8 tag[AES_BLOCK_SIZE];
119 /* Fields used for RFC3686 requests */
121 u8 rfc3686_iv[AES_BLOCK_SIZE];
125 struct skcipher_request fallback_req; // keep at the end
128 struct ccp_aes_cmac_req_ctx {
129 unsigned int null_msg;
132 struct scatterlist *src;
136 unsigned int hash_rem;
138 struct sg_table data_sg;
140 struct scatterlist iv_sg;
141 u8 iv[AES_BLOCK_SIZE];
143 struct scatterlist buf_sg;
144 unsigned int buf_count;
145 u8 buf[AES_BLOCK_SIZE];
147 struct scatterlist pad_sg;
148 unsigned int pad_count;
149 u8 pad[AES_BLOCK_SIZE];
154 struct ccp_aes_cmac_exp_ctx {
155 unsigned int null_msg;
157 u8 iv[AES_BLOCK_SIZE];
159 unsigned int buf_count;
160 u8 buf[AES_BLOCK_SIZE];
163 /***** 3DES related defines *****/
164 struct ccp_des3_ctx {
165 enum ccp_engine engine;
166 enum ccp_des3_type type;
167 enum ccp_des3_mode mode;
169 struct scatterlist key_sg;
170 unsigned int key_len;
171 u8 key[AES_MAX_KEY_SIZE];
174 struct ccp_des3_req_ctx {
175 struct scatterlist iv_sg;
176 u8 iv[AES_BLOCK_SIZE];
181 /* SHA-related defines
182 * These values must be large enough to accommodate any variant
184 #define MAX_SHA_CONTEXT_SIZE SHA512_DIGEST_SIZE
185 #define MAX_SHA_BLOCK_SIZE SHA512_BLOCK_SIZE
188 struct scatterlist opad_sg;
189 unsigned int opad_count;
191 unsigned int key_len;
192 u8 key[MAX_SHA_BLOCK_SIZE];
193 u8 ipad[MAX_SHA_BLOCK_SIZE];
194 u8 opad[MAX_SHA_BLOCK_SIZE];
195 struct crypto_shash *hmac_tfm;
198 struct ccp_sha_req_ctx {
199 enum ccp_sha_type type;
206 struct scatterlist *src;
210 unsigned int hash_rem;
212 struct sg_table data_sg;
214 struct scatterlist ctx_sg;
215 u8 ctx[MAX_SHA_CONTEXT_SIZE];
217 struct scatterlist buf_sg;
218 unsigned int buf_count;
219 u8 buf[MAX_SHA_BLOCK_SIZE];
221 /* CCP driver command */
225 struct ccp_sha_exp_ctx {
226 enum ccp_sha_type type;
232 u8 ctx[MAX_SHA_CONTEXT_SIZE];
234 unsigned int buf_count;
235 u8 buf[MAX_SHA_BLOCK_SIZE];
238 /***** RSA related defines *****/
241 unsigned int key_len; /* in bits */
242 struct scatterlist e_sg;
245 struct scatterlist n_sg;
248 struct scatterlist d_sg;
253 struct ccp_rsa_req_ctx {
257 #define CCP_RSA_MAXMOD (4 * 1024 / 8)
258 #define CCP5_RSA_MAXMOD (16 * 1024 / 8)
260 /***** Common Context Structure *****/
262 int (*complete)(struct crypto_async_request *req, int ret);
265 struct ccp_aes_ctx aes;
266 struct ccp_rsa_ctx rsa;
267 struct ccp_sha_ctx sha;
268 struct ccp_des3_ctx des3;
272 int ccp_crypto_enqueue_request(struct crypto_async_request *req,
273 struct ccp_cmd *cmd);
274 struct scatterlist *ccp_crypto_sg_table_add(struct sg_table *table,
275 struct scatterlist *sg_add);
277 int ccp_register_aes_algs(struct list_head *head);
278 int ccp_register_aes_cmac_algs(struct list_head *head);
279 int ccp_register_aes_xts_algs(struct list_head *head);
280 int ccp_register_aes_aeads(struct list_head *head);
281 int ccp_register_sha_algs(struct list_head *head);
282 int ccp_register_des3_algs(struct list_head *head);
283 int ccp_register_rsa_algs(struct list_head *head);