3  * AMD Cryptographic Coprocessor (CCP) AES XTS crypto API support
15 #include <crypto/aes.h>
29 		.name		= "xts(aes)",
30 		.drv_name	= "xts-aes-ccp",
91 		memcpy(ctx->u.aes.key, key, key_len);  in ccp_aes_xts_setkey()
95 			memcpy(ctx->u.aes.key, key, key_len);  in ccp_aes_xts_setkey()
98 	ctx->u.aes.key_len = key_len / 2;  in ccp_aes_xts_setkey()
99 	sg_init_one(&ctx->u.aes.key_sg, ctx->u.aes.key, key_len);  in ccp_aes_xts_setkey()
101 	return crypto_skcipher_setkey(ctx->u.aes.tfm_skcipher, key, key_len);  in ccp_aes_xts_setkey()
116 	if (!ctx->u.aes.key_len)  in ccp_aes_xts_crypt()
136 	 * only supports AES-128 operations; version 5 CCPs support both  in ccp_aes_xts_crypt()
137 	 * AES-128 and -256 operations.  in ccp_aes_xts_crypt()
142 	    (ctx->u.aes.key_len != AES_KEYSIZE_128))  in ccp_aes_xts_crypt()
144 	if ((ctx->u.aes.key_len != AES_KEYSIZE_128) &&  in ccp_aes_xts_crypt()
145 	    (ctx->u.aes.key_len != AES_KEYSIZE_256))  in ccp_aes_xts_crypt()
152 					 ctx->u.aes.tfm_skcipher);  in ccp_aes_xts_crypt()
174 	rctx->cmd.u.xts.key = &ctx->u.aes.key_sg;  in ccp_aes_xts_crypt()
175 	rctx->cmd.u.xts.key_len = ctx->u.aes.key_len;  in ccp_aes_xts_crypt()
203 	ctx->u.aes.key_len = 0;  in ccp_aes_xts_init_tfm()
205 	fallback_tfm = crypto_alloc_skcipher("xts(aes)", 0,  in ccp_aes_xts_init_tfm()
208 		pr_warn("could not load fallback driver xts(aes)\n");  in ccp_aes_xts_init_tfm()
211 	ctx->u.aes.tfm_skcipher = fallback_tfm;  in ccp_aes_xts_init_tfm()
224 	crypto_free_skcipher(ctx->u.aes.tfm_skcipher);  in ccp_aes_xts_exit_tfm()