aes_glue.c

/* Glue code for AES encryption optimized for sparc64 crypto opcodes.
 *
 * This is based largely upon arch/x86/crypto/aesni-intel_glue.c
 *
 * Copyright (C) 2008, Intel Corp.
 *    Author: Huang Ying <ying.huang@intel.com>
 *
 * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD
 * interface for 64-bit kernels.
 *    Authors: Adrian Hoban <adrian.hoban@intel.com>
 *             Gabriele Paoloni <gabriele.paoloni@intel.com>
 *             Tadeusz Struk (tadeusz.struk@intel.com)
 *             Aidan O'Mahony (aidan.o.mahony@intel.com)
 *    Copyright (c) 2010, Intel Corporation.
 */

#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt

#include <linux/crypto.h>
#include <linux/init.h>
#include <linux/module.h>
#include <linux/mm.h>
#include <linux/types.h>
#include <crypto/algapi.h>
#include <crypto/aes.h>

#include <asm/fpumacro.h>
#include <asm/pstate.h>
#include <asm/elf.h>

#include "opcodes.h"

struct aes_ops {
	void (*encrypt)(const u64 *key, const u32 *input, u32 *output);
	void (*decrypt)(const u64 *key, const u32 *input, u32 *output);
	void (*load_encrypt_keys)(const u64 *key);
	void (*load_decrypt_keys)(const u64 *key);
	void (*ecb_encrypt)(const u64 *key, const u64 *input, u64 *output,
			    unsigned int len);
	void (*ecb_decrypt)(const u64 *key, const u64 *input, u64 *output,
			    unsigned int len);
	void (*cbc_encrypt)(const u64 *key, const u64 *input, u64 *output,
			    unsigned int len, u64 *iv);
	void (*cbc_decrypt)(const u64 *key, const u64 *input, u64 *output,
			    unsigned int len, u64 *iv);
	void (*ctr_crypt)(const u64 *key, const u64 *input, u64 *output,
			  unsigned int len, u64 *iv);
};

struct crypto_sparc64_aes_ctx {
	struct aes_ops *ops;
	u64 key[AES_MAX_KEYLENGTH / sizeof(u64)];
	u32 key_length;
	u32 expanded_key_length;
};

extern void aes_sparc64_encrypt_128(const u64 *key, const u32 *input,
				    u32 *output);
extern void aes_sparc64_encrypt_192(const u64 *key, const u32 *input,
				    u32 *output);
extern void aes_sparc64_encrypt_256(const u64 *key, const u32 *input,
				    u32 *output);

extern void aes_sparc64_decrypt_128(const u64 *key, const u32 *input,
				    u32 *output);
extern void aes_sparc64_decrypt_192(const u64 *key, const u32 *input,
				    u32 *output);
extern void aes_sparc64_decrypt_256(const u64 *key, const u32 *input,
				    u32 *output);