summaryrefslogtreecommitdiffstats
path: root/drivers/crypto/ccp/ccp-crypto.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/crypto/ccp/ccp-crypto.h')
-rw-r--r--drivers/crypto/ccp/ccp-crypto.h286
1 files changed, 286 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/ccp-crypto.h b/drivers/crypto/ccp/ccp-crypto.h
new file mode 100644
index 000000000..e42450d07
--- /dev/null
+++ b/drivers/crypto/ccp/ccp-crypto.h
@@ -0,0 +1,286 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * AMD Cryptographic Coprocessor (CCP) crypto API support
+ *
+ * Copyright (C) 2013,2017 Advanced Micro Devices, Inc.
+ *
+ * Author: Tom Lendacky <thomas.lendacky@amd.com>
+ */
+
+#ifndef __CCP_CRYPTO_H__
+#define __CCP_CRYPTO_H__
+
+#include <linux/list.h>
+#include <linux/wait.h>
+#include <linux/ccp.h>
+#include <crypto/algapi.h>
+#include <crypto/aes.h>
+#include <crypto/internal/aead.h>
+#include <crypto/aead.h>
+#include <crypto/ctr.h>
+#include <crypto/hash.h>
+#include <crypto/sha1.h>
+#include <crypto/sha2.h>
+#include <crypto/akcipher.h>
+#include <crypto/skcipher.h>
+#include <crypto/internal/rsa.h>
+
+/* We want the module name in front of our messages */
+#undef pr_fmt
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#define CCP_LOG_LEVEL KERN_INFO
+
+#define CCP_CRA_PRIORITY 300
+
+struct ccp_crypto_skcipher_alg {
+ struct list_head entry;
+
+ u32 mode;
+
+ struct skcipher_alg alg;
+};
+
+struct ccp_crypto_aead {
+ struct list_head entry;
+
+ u32 mode;
+
+ struct aead_alg alg;
+};
+
+struct ccp_crypto_ahash_alg {
+ struct list_head entry;
+
+ const __be32 *init;
+ u32 type;
+ u32 mode;
+
+ /* Child algorithm used for HMAC, CMAC, etc */
+ char child_alg[CRYPTO_MAX_ALG_NAME];
+
+ struct ahash_alg alg;
+};
+
+struct ccp_crypto_akcipher_alg {
+ struct list_head entry;
+
+ struct akcipher_alg alg;
+};
+
+static inline struct ccp_crypto_skcipher_alg *
+ ccp_crypto_skcipher_alg(struct crypto_skcipher *tfm)
+{
+ struct skcipher_alg *alg = crypto_skcipher_alg(tfm);
+
+ return container_of(alg, struct ccp_crypto_skcipher_alg, alg);
+}
+
+static inline struct ccp_crypto_ahash_alg *
+ ccp_crypto_ahash_alg(struct crypto_tfm *tfm)
+{
+ struct crypto_alg *alg = tfm->__crt_alg;
+ struct ahash_alg *ahash_alg;
+
+ ahash_alg = container_of(alg, struct ahash_alg, halg.base);
+
+ return container_of(ahash_alg, struct ccp_crypto_ahash_alg, alg);
+}
+
+/***** AES related defines *****/
+struct ccp_aes_ctx {
+ /* Fallback cipher for XTS with unsupported unit sizes */
+ struct crypto_skcipher *tfm_skcipher;
+
+ enum ccp_engine engine;
+ enum ccp_aes_type type;
+ enum ccp_aes_mode mode;
+
+ struct scatterlist key_sg;
+ unsigned int key_len;
+ u8 key[AES_MAX_KEY_SIZE * 2];
+
+ u8 nonce[CTR_RFC3686_NONCE_SIZE];
+
+ /* CMAC key structures */
+ struct scatterlist k1_sg;
+ struct scatterlist k2_sg;
+ unsigned int kn_len;
+ u8 k1[AES_BLOCK_SIZE];
+ u8 k2[AES_BLOCK_SIZE];
+};
+
+struct ccp_aes_req_ctx {
+ struct scatterlist iv_sg;
+ u8 iv[AES_BLOCK_SIZE];
+
+ struct scatterlist tag_sg;
+ u8 tag[AES_BLOCK_SIZE];
+
+ /* Fields used for RFC3686 requests */
+ u8 *rfc3686_info;
+ u8 rfc3686_iv[AES_BLOCK_SIZE];
+
+ struct ccp_cmd cmd;
+
+ struct skcipher_request fallback_req; // keep at the end
+};
+
+struct ccp_aes_cmac_req_ctx {
+ unsigned int null_msg;
+ unsigned int final;
+
+ struct scatterlist *src;
+ unsigned int nbytes;
+
+ u64 hash_cnt;
+ unsigned int hash_rem;
+
+ struct sg_table data_sg;
+
+ struct scatterlist iv_sg;
+ u8 iv[AES_BLOCK_SIZE];
+
+ struct scatterlist buf_sg;
+ unsigned int buf_count;
+ u8 buf[AES_BLOCK_SIZE];
+
+ struct scatterlist pad_sg;
+ unsigned int pad_count;
+ u8 pad[AES_BLOCK_SIZE];
+
+ struct ccp_cmd cmd;
+};
+
+struct ccp_aes_cmac_exp_ctx {
+ unsigned int null_msg;
+
+ u8 iv[AES_BLOCK_SIZE];
+
+ unsigned int buf_count;
+ u8 buf[AES_BLOCK_SIZE];
+};
+
+/***** 3DES related defines *****/
+struct ccp_des3_ctx {
+ enum ccp_engine engine;
+ enum ccp_des3_type type;
+ enum ccp_des3_mode mode;
+
+ struct scatterlist key_sg;
+ unsigned int key_len;
+ u8 key[AES_MAX_KEY_SIZE];
+};
+
+struct ccp_des3_req_ctx {
+ struct scatterlist iv_sg;
+ u8 iv[AES_BLOCK_SIZE];
+
+ struct ccp_cmd cmd;
+};
+
+/* SHA-related defines
+ * These values must be large enough to accommodate any variant
+ */
+#define MAX_SHA_CONTEXT_SIZE SHA512_DIGEST_SIZE
+#define MAX_SHA_BLOCK_SIZE SHA512_BLOCK_SIZE
+
+struct ccp_sha_ctx {
+ struct scatterlist opad_sg;
+ unsigned int opad_count;
+
+ unsigned int key_len;
+ u8 key[MAX_SHA_BLOCK_SIZE];
+ u8 ipad[MAX_SHA_BLOCK_SIZE];
+ u8 opad[MAX_SHA_BLOCK_SIZE];
+ struct crypto_shash *hmac_tfm;
+};
+
+struct ccp_sha_req_ctx {
+ enum ccp_sha_type type;
+
+ u64 msg_bits;
+
+ unsigned int first;
+ unsigned int final;
+
+ struct scatterlist *src;
+ unsigned int nbytes;
+
+ u64 hash_cnt;
+ unsigned int hash_rem;
+
+ struct sg_table data_sg;
+
+ struct scatterlist ctx_sg;
+ u8 ctx[MAX_SHA_CONTEXT_SIZE];
+
+ struct scatterlist buf_sg;
+ unsigned int buf_count;
+ u8 buf[MAX_SHA_BLOCK_SIZE];
+
+ /* CCP driver command */
+ struct ccp_cmd cmd;
+};
+
+struct ccp_sha_exp_ctx {
+ enum ccp_sha_type type;
+
+ u64 msg_bits;
+
+ unsigned int first;
+
+ u8 ctx[MAX_SHA_CONTEXT_SIZE];
+
+ unsigned int buf_count;
+ u8 buf[MAX_SHA_BLOCK_SIZE];
+};
+
+/***** RSA related defines *****/
+
+struct ccp_rsa_ctx {
+ unsigned int key_len; /* in bits */
+ struct scatterlist e_sg;
+ u8 *e_buf;
+ unsigned int e_len;
+ struct scatterlist n_sg;
+ u8 *n_buf;
+ unsigned int n_len;
+ struct scatterlist d_sg;
+ u8 *d_buf;
+ unsigned int d_len;
+};
+
+struct ccp_rsa_req_ctx {
+ struct ccp_cmd cmd;
+};
+
+#define CCP_RSA_MAXMOD (4 * 1024 / 8)
+#define CCP5_RSA_MAXMOD (16 * 1024 / 8)
+
+/***** Common Context Structure *****/
+struct ccp_ctx {
+ int (*complete)(struct crypto_async_request *req, int ret);
+
+ union {
+ struct ccp_aes_ctx aes;
+ struct ccp_rsa_ctx rsa;
+ struct ccp_sha_ctx sha;
+ struct ccp_des3_ctx des3;
+ } u;
+};
+
+int ccp_crypto_enqueue_request(struct crypto_async_request *req,
+ struct ccp_cmd *cmd);
+struct scatterlist *ccp_crypto_sg_table_add(struct sg_table *table,
+ struct scatterlist *sg_add);
+
+int ccp_register_aes_algs(struct list_head *head);
+int ccp_register_aes_cmac_algs(struct list_head *head);
+int ccp_register_aes_xts_algs(struct list_head *head);
+int ccp_register_aes_aeads(struct list_head *head);
+int ccp_register_sha_algs(struct list_head *head);
+int ccp_register_des3_algs(struct list_head *head);
+int ccp_register_rsa_algs(struct list_head *head);
+
+#endif