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/* Glue code for CRC32C optimized for sparc64 crypto opcodes.
 *
 * This is based largely upon arch/x86/crypto/crc32c-intel.c
 *
 * Copyright (C) 2008 Intel Corporation
 * Authors: Austin Zhang <austin_zhang@linux.intel.com>
 *          Kent Liu <kent.liu@intel.com>
 */

#define pr_fmt(fmt)	KBUILD_MODNAME ": " fmt

#include <linux/init.h>
#include <linux/module.h>
#include <linux/string.h>
#include <linux/kernel.h>
#include <linux/crc32.h>

#include <crypto/internal/hash.h>

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

#include "opcodes.h"

/*
 * Setting the seed allows arbitrary accumulators and flexible XOR policy
 * If your algorithm starts with ~0, then XOR with ~0 before you set
 * the seed.
 */
static int crc32c_sparc64_setkey(struct crypto_shash *hash, const u8 *key,
				 unsigned int keylen)
{
	u32 *mctx = crypto_shash_ctx(hash);

	if (keylen != sizeof(u32)) {
		crypto_shash_set_flags(hash, CRYPTO_TFM_RES_BAD_KEY_LEN);
		return -EINVAL;
	}
	*(__le32 *)mctx = le32_to_cpup((__le32 *)key);
	return 0;
}

static int crc32c_sparc64_init(struct shash_desc *desc)
{
	u32 *mctx = crypto_shash_ctx(desc->tfm);
	u32 *crcp = shash_desc_ctx(desc);

	*crcp = *mctx;

	return 0;
}

extern void crc32c_sparc64(u32 *crcp, const u64 *data, unsigned int len);

static void crc32c_compute(u32 *crcp, const u64 *data, unsigned int len)
{
	unsigned int asm_len;