linux-imx

/*

 * Cryptographic API.

 *

 * Support for OMAP AES HW acceleration.

 *

 * Copyright (c) 2010 Nokia Corporation

 * Author: Dmitry Kasatkin <dmitry.kasatkin@nokia.com>

 * Copyright (c) 2011 Texas Instruments Incorporated

 *

 * This program is free software; you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 2 as published

 * by the Free Software Foundation.

 *

 */

​

#define pr_fmt(fmt) "%20s: " fmt, __func__

#define prn(num) pr_debug(#num "=%d\n", num)

#define prx(num) pr_debug(#num "=%x\n", num)

​

#include <linux/err.h>

#include <linux/module.h>

#include <linux/init.h>

#include <linux/errno.h>

#include <linux/kernel.h>

#include <linux/platform_device.h>

#include <linux/scatterlist.h>

#include <linux/dma-mapping.h>

#include <linux/dmaengine.h>

#include <linux/pm_runtime.h>

#include <linux/of.h>

#include <linux/of_device.h>

#include <linux/of_address.h>

#include <linux/io.h>

#include <linux/crypto.h>

#include <linux/interrupt.h>

#include <crypto/scatterwalk.h>

#include <crypto/aes.h>

#include <crypto/gcm.h>

#include <crypto/engine.h>

#include <crypto/internal/skcipher.h>

#include <crypto/internal/aead.h>

​

#include "omap-crypto.h"

#include "omap-aes.h"

​

/* keep registered devices data here */

static LIST_HEAD(dev_list);

static DEFINE_SPINLOCK(list_lock);

​

static int aes_fallback_sz = 200;

​

#ifdef DEBUG

#define omap_aes_read(dd, offset)               \

({                              \

    int _read_ret;                      \

    _read_ret = __raw_readl(dd->io_base + offset);      \

    pr_debug("omap_aes_read(" #offset "=%#x)= %#x\n",   \

         offset, _read_ret);                \

    _read_ret;                      \

})

#else

inline u32 omap_aes_read(struct omap_aes_dev *dd, u32 offset)

{

    return __raw_readl(dd->io_base + offset);

}

#endif

​

#ifdef DEBUG

#define omap_aes_write(dd, offset, value)               \

    do {                                \

        pr_debug("omap_aes_write(" #offset "=%#x) value=%#x\n", \

             offset, value);                \

        __raw_writel(value, dd->io_base + offset);      \

    } while (0)

#else

inline void omap_aes_write(struct omap_aes_dev *dd, u32 offset,

                  u32 value)

{

    __raw_writel(value, dd->io_base + offset);

}

#endif

​

static inline void omap_aes_write_mask(struct omap_aes_dev *dd, u32 offset,

                    u32 value, u32 mask)

{

    u32 val;

​

    val = omap_aes_read(dd, offset);

    val &= ~mask;

    val |= value;

    omap_aes_write(dd, offset, val);

}