linux-imx

// SPDX-License-Identifier: GPL-2.0

/*

 * Cryptographic API.

 *

 * Support for ATMEL SHA1/SHA256 HW acceleration.

 *

 * Copyright (c) 2012 Eukréa Electromatique - ATMEL

 * Author: Nicolas Royer <nicolas@eukrea.com>

 *

 * Some ideas are from omap-sham.c drivers.

 */

​

​

#include <linux/kernel.h>

#include <linux/module.h>

#include <linux/slab.h>

#include <linux/err.h>

#include <linux/clk.h>

#include <linux/io.h>

#include <linux/hw_random.h>

#include <linux/platform_device.h>

​

#include <linux/device.h>

#include <linux/init.h>

#include <linux/errno.h>

#include <linux/interrupt.h>

#include <linux/irq.h>

#include <linux/scatterlist.h>

#include <linux/dma-mapping.h>

#include <linux/of_device.h>

#include <linux/delay.h>

#include <linux/crypto.h>

#include <linux/cryptohash.h>

#include <crypto/scatterwalk.h>

#include <crypto/algapi.h>

#include <crypto/sha.h>

#include <crypto/hash.h>

#include <crypto/internal/hash.h>

#include <linux/platform_data/crypto-atmel.h>

#include "atmel-sha-regs.h"

#include "atmel-authenc.h"

​

/* SHA flags */

#define SHA_FLAGS_BUSY          BIT(0)

#define SHA_FLAGS_FINAL         BIT(1)

#define SHA_FLAGS_DMA_ACTIVE    BIT(2)

#define SHA_FLAGS_OUTPUT_READY  BIT(3)

#define SHA_FLAGS_INIT          BIT(4)

#define SHA_FLAGS_CPU           BIT(5)

#define SHA_FLAGS_DMA_READY     BIT(6)

#define SHA_FLAGS_DUMP_REG  BIT(7)

​

/* bits[11:8] are reserved. */

​

#define SHA_FLAGS_FINUP     BIT(16)

#define SHA_FLAGS_SG        BIT(17)

#define SHA_FLAGS_ERROR     BIT(23)

#define SHA_FLAGS_PAD       BIT(24)

#define SHA_FLAGS_RESTORE   BIT(25)

#define SHA_FLAGS_IDATAR0   BIT(26)

#define SHA_FLAGS_WAIT_DATARDY  BIT(27)

​

#define SHA_OP_INIT 0