Re: [PATCH v2 1/4] Crypto: Crypto driver support aes/des/des3 for rk3288

Caesar Wang
2015-11-06T01:54:45Z

I guess the subject:
"crypto: rockchip: ...."

Maybe better.

在 2015年11月06日 09:17, Zain Wang 写道:
> The names registered are:
> ecb(aes) cbc(aes) ecb(des) cbc(des) ecb(des3_ede) cbc(des3_ede)
> You can alloc tags above in your case.
>
> And other algorithms and platforms will be added later on.
>
> Signed-off-by: Zain Wang <zain.wang@rock-chips.com>
> ---
>
> Changed in v2:
> - remove some part about hash
> - add weak key detection
> - changed some variate's type
>
> Changde in v1:
> - modify some variate's name
> - modify some variate's type
> - modify some return value
> - remove or modify some print info
> - use more dev_xxx in probe
> - modify the prio of cipher

[...]

> +static int rk_crypto_remove(struct platform_device *pdev)
> +{
> + struct crypto_info_t *crypto_tmp = platform_get_drvdata(pdev);
> +
> + rk_crypto_unregister();
> + tasklet_kill(&crypto_tmp->crypto_tasklet);
> + free_irq(crypto_tmp->irq, crypto_tmp);
> + crypto_p = NULL;
> +
> + return 0;
> +}
> +
> +#ifdef CONFIG_OF
> +static const struct of_device_id crypto_of_id_table[] = {
> + { .compatible = "rockchip,rk3288-crypto" },
> + {}
> +};
> +#endif /* CONFIG_OF */

I see the rk3368/ rk32xx SoCs the crypto seem the same IP.
So,
I guess we should put the "of_device_id" before the device probe since
we should can compatible for more SoCs.

Others, for example the commit need a bit change.

> +
> +static struct platform_driver crypto_driver = {
> + .probe = rk_crypto_probe,
> + .remove = rk_crypto_remove,
> + .driver = {
> + .name = "rockchip,rk3288-crypto",
> + .of_match_table = of_match_ptr(crypto_of_id_table),
> + },
> +};
> +
> +module_platform_driver(crypto_driver);
> +
> +MODULE_LICENSE("GPL");
> +MODULE_AUTHOR("Zain Wang");
> diff --git a/drivers/crypto/rockchip/rk3288_crypto.h b/drivers/crypto/rockchip/rk3288_crypto.h
> new file mode 100644
> index 0000000..cf4cd18
> --- /dev/null
> +++ b/drivers/crypto/rockchip/rk3288_crypto.h
> @@ -0,0 +1,222 @@
> +#ifndef __RK3288_CRYPTO_H__
> +#define __RK3288_CRYPTO_H__
> +
> +#include <crypto/sha.h>
> +#include <crypto/aes.h>
> +#include <crypto/des.h>
> +#include <crypto/ctr.h>
> +#include <crypto/algapi.h>
> +#include <linux/interrupt.h>
> +#include <linux/delay.h>
> +
> +#define _SBF(v, f) ((v) << (f))
> +
> +/* Crypto control registers*/
> +#define RK_CRYPTO_INTSTS 0x0000
> +#define RK_CRYPTO_PKA_DONE_INT BIT(5)
> +#define RK_CRYPTO_HASH_DONE_INT BIT(4)
> +#define RK_CRYPTO_HRDMA_ERR_INT BIT(3)
> +#define RK_CRYPTO_HRDMA_DONE_INT BIT(2)
> +#define RK_CRYPTO_BCDMA_ERR_INT BIT(1)
> +#define RK_CRYPTO_BCDMA_DONE_INT BIT(0)
> +
> +#define RK_CRYPTO_INTENA 0x0004
> +#define RK_CRYPTO_PKA_DONE_ENA BIT(5)
> +#define RK_CRYPTO_HASH_DONE_ENA BIT(4)
> +#define RK_CRYPTO_HRDMA_ERR_ENA BIT(3)
> +#define RK_CRYPTO_HRDMA_DONE_ENA BIT(2)
> +#define RK_CRYPTO_BCDMA_ERR_ENA BIT(1)
> +#define RK_CRYPTO_BCDMA_DONE_ENA BIT(0)
> +
> +#define RK_CRYPTO_CTRL 0x0008
> +#define RK_CRYPTO_WRITE_MASK (0xFFFF << 16)
> +#define RK_CRYPTO_TRNG_FLUSH BIT(9)
> +#define RK_CRYPTO_TRNG_START BIT(8)
> +#define RK_CRYPTO_PKA_FLUSH BIT(7)
> +#define RK_CRYPTO_HASH_FLUSH BIT(6)
> +#define RK_CRYPTO_BLOCK_FLUSH BIT(5)
> +#define RK_CRYPTO_PKA_START BIT(4)
> +#define RK_CRYPTO_HASH_START BIT(3)
> +#define RK_CRYPTO_BLOCK_START BIT(2)
> +#define RK_CRYPTO_TDES_START BIT(1)
> +#define RK_CRYPTO_AES_START BIT(0)
> +
> +#define RK_CRYPTO_CONF 0x000c
> +/* HASH Receive DMA Address Mode: fix | increment */
> +#define RK_CRYPTO_HR_ADDR_MODE BIT(8)
> +/* Block Transmit DMA Address Mode: fix | increment */
> +#define RK_CRYPTO_BT_ADDR_MODE BIT(7)
> +/* Block Receive DMA Address Mode: fix | increment */
> +#define RK_CRYPTO_BR_ADDR_MODE BIT(6)
> +#define RK_CRYPTO_BYTESWAP_HRFIFO BIT(5)
> +#define RK_CRYPTO_BYTESWAP_BTFIFO BIT(4)
> +#define RK_CRYPTO_BYTESWAP_BRFIFO BIT(3)
> +/* AES = 0 OR DES = 1 */
> +#define RK_CRYPTO_DESSEL BIT(2)
> +#define RK_CYYPTO_HASHINSEL_INDEPENDENT_SOURCE _SBF(0x00, 0)
> +#define RK_CYYPTO_HASHINSEL_BLOCK_CIPHER_INPUT _SBF(0x01, 0)
> +#define RK_CYYPTO_HASHINSEL_BLOCK_CIPHER_OUTPUT _SBF(0x02, 0)
> +
> +/* Block Receiving DMA Start Address Register */
> +#define RK_CRYPTO_BRDMAS 0x0010
> +/* Block Transmitting DMA Start Address Register */
> +#define RK_CRYPTO_BTDMAS 0x0014
> +/* Block Receiving DMA Length Register */
> +#define RK_CRYPTO_BRDMAL 0x0018
> +/* Hash Receiving DMA Start Address Register */
> +#define RK_CRYPTO_HRDMAS 0x001c
> +/* Hash Receiving DMA Length Register */
> +#define RK_CRYPTO_HRDMAL 0x0020
> +
> +/* AES registers */
> +#define RK_CRYPTO_AES_CTRL 0x0080
> +#define RK_CRYPTO_AES_BYTESWAP_CNT BIT(11)
> +#define RK_CRYPTO_AES_BYTESWAP_KEY BIT(10)
> +#define RK_CRYPTO_AES_BYTESWAP_IV BIT(9)
> +#define RK_CRYPTO_AES_BYTESWAP_DO BIT(8)
> +#define RK_CRYPTO_AES_BYTESWAP_DI BIT(7)
> +#define RK_CRYPTO_AES_KEY_CHANGE BIT(6)
> +#define RK_CRYPTO_AES_ECB_MODE _SBF(0x00, 4)
> +#define RK_CRYPTO_AES_CBC_MODE _SBF(0x01, 4)
> +#define RK_CRYPTO_AES_CTR_MODE _SBF(0x02, 4)
> +#define RK_CRYPTO_AES_128BIT_key _SBF(0x00, 2)
> +#define RK_CRYPTO_AES_192BIT_key _SBF(0x01, 2)
> +#define RK_CRYPTO_AES_256BIT_key _SBF(0x02, 2)
> +/* Slave = 0 / fifo = 1 */
> +#define RK_CRYPTO_AES_FIFO_MODE BIT(1)
> +/* Encryption = 0 , Decryption = 1 */
> +#define RK_CRYPTO_AES_DEC BIT(0)
> +
> +#define RK_CRYPTO_AES_STS 0x0084
> +#define RK_CRYPTO_AES_DONE BIT(0)
> +
> +/* AES Input Data 0-3 Register */
> +#define RK_CRYPTO_AES_DIN_0 0x0088
> +#define RK_CRYPTO_AES_DIN_1 0x008c
> +#define RK_CRYPTO_AES_DIN_2 0x0090
> +#define RK_CRYPTO_AES_DIN_3 0x0094
> +
> +/* AES output Data 0-3 Register */
> +#define RK_CRYPTO_AES_DOUT_0 0x0098
> +#define RK_CRYPTO_AES_DOUT_1 0x009c
> +#define RK_CRYPTO_AES_DOUT_2 0x00a0
> +#define RK_CRYPTO_AES_DOUT_3 0x00a4
> +
> +/* AES IV Data 0-3 Register */
> +#define RK_CRYPTO_AES_IV_0 0x00a8
> +#define RK_CRYPTO_AES_IV_1 0x00ac
> +#define RK_CRYPTO_AES_IV_2 0x00b0
> +#define RK_CRYPTO_AES_IV_3 0x00b4
> +
> +/* AES Key Data 0-3 Register */
> +#define RK_CRYPTO_AES_KEY_0 0x00b8
> +#define RK_CRYPTO_AES_KEY_1 0x00bc
> +#define RK_CRYPTO_AES_KEY_2 0x00c0
> +#define RK_CRYPTO_AES_KEY_3 0x00c4
> +#define RK_CRYPTO_AES_KEY_4 0x00c8
> +#define RK_CRYPTO_AES_KEY_5 0x00cc
> +#define RK_CRYPTO_AES_KEY_6 0x00d0
> +#define RK_CRYPTO_AES_KEY_7 0x00d4
> +
> +/* AES Input Counter 0-3 Register */
> +#define RK_CRYPTO_AES_CNT_0 0x00d8
> +#define RK_CRYPTO_AES_CNT_1 0x00dc
> +#define RK_CRYPTO_AES_CNT_2 0x00e0
> +#define RK_CRYPTO_AES_CNT_3 0x00e4
> +
> +/* des/tdes */
> +#define RK_CRYPTO_TDES_CTRL 0x0100
> +#define RK_CRYPTO_TDES_BYTESWAP_KEY BIT(8)
> +#define RK_CRYPTO_TDES_BYTESWAP_IV BIT(7)
> +#define RK_CRYPTO_TDES_BYTESWAP_DO BIT(6)
> +#define RK_CRYPTO_TDES_BYTESWAP_DI BIT(5)
> +/* 0: ECB, 1: CBC */
> +#define RK_CRYPTO_TDES_CHAINMODE BIT(4)
> +/* TDES Key Mode, 0 : EDE, 1 : EEE */
> +#define RK_CRYPTO_TDES_EEE BIT(3)
> +/* 0: DES, 1:TDES */
> +#define RK_CRYPTO_TDES_SELECT BIT(2)
> +/* 0: Slave, 1:Fifo */
> +#define RK_CRYPTO_TDES_FIFO_MODE BIT(1)
> +/* Encryption = 0 , Decryption = 1 */
> +#define RK_CRYPTO_TDES_DEC BIT(0)
> +
> +#define RK_CRYPTO_TDES_STS 0x0104
> +#define RK_CRYPTO_TDES_DONE BIT(0)
> +
> +#define RK_CRYPTO_TDES_DIN_0 0x0108
> +#define RK_CRYPTO_TDES_DIN_1 0x010c
> +#define RK_CRYPTO_TDES_DOUT_0 0x0110
> +#define RK_CRYPTO_TDES_DOUT_1 0x0114
> +#define RK_CRYPTO_TDES_IV_0 0x0118
> +#define RK_CRYPTO_TDES_IV_1 0x011c
> +#define RK_CRYPTO_TDES_KEY1_0 0x0120
> +#define RK_CRYPTO_TDES_KEY1_1 0x0124
> +#define RK_CRYPTO_TDES_KEY2_0 0x0128
> +#define RK_CRYPTO_TDES_KEY2_1 0x012c
> +#define RK_CRYPTO_TDES_KEY3_0 0x0130
> +#define RK_CRYPTO_TDES_KEY3_1 0x0134
> +
> +#define CRYPTO_READ(dev, offset) \
> + readl_relaxed(((dev)->reg + (offset)))
> +#define CRYPTO_WRITE(dev, offset, val) \
> + writel_relaxed((val), ((dev)->reg + (offset)))
> +/* get register virt address */
> +#define CRYPTO_GET_REG_VIRT(dev, offset) ((dev)->reg + (offset))
> +
> +struct crypto_info_t {
> + struct device *dev;
> + struct clk *aclk;
> + struct clk *hclk;
> + struct clk *sclk;
> + struct clk *dmaclk;
> + void __iomem *reg;
> + int irq;
> + struct crypto_queue queue;
> + struct tasklet_struct crypto_tasklet;
> + struct ablkcipher_request *ablk_req;
> + /* device lock */
> + spinlock_t lock;
> +
> + /* the public variable */
> + struct scatterlist *sg_src;
> + struct scatterlist *sg_dst;
> + struct scatterlist sg_tmp;
> + struct scatterlist *first;
> + unsigned int left_bytes;
> + void *addr_vir;
> + int aligned;
> + int align_size;
> + size_t nents;
> + unsigned int total;
> + unsigned int count;
> + u32 mode;
> + dma_addr_t addr_in;
> + dma_addr_t addr_out;
> + int (*start)(struct crypto_info_t *dev);
> + int (*update)(struct crypto_info_t *dev);
> + void (*complete)(struct crypto_info_t *dev, int err);
> + int (*enable_clk)(struct crypto_info_t *dev);
> + void (*disable_clk)(struct crypto_info_t *dev);
> + int (*load_data)(struct crypto_info_t *dev,
> + struct scatterlist *sg_src,
> + struct scatterlist *sg_dst);
> + void (*unload_data)(struct crypto_info_t *dev);
> +};
> +
> +/* the private variable of cipher */
> +struct rk_cipher_ctx {
> + struct crypto_info_t *dev;
> + unsigned int keylen;
> +};
> +
> +extern struct crypto_info_t *crypto_p;
> +
> +extern struct crypto_alg rk_ecb_aes_alg;
> +extern struct crypto_alg rk_cbc_aes_alg;
> +extern struct crypto_alg rk_ecb_des_alg;
> +extern struct crypto_alg rk_cbc_des_alg;
> +extern struct crypto_alg rk_ecb_des3_ede_alg;
> +extern struct crypto_alg rk_cbc_des3_ede_alg;
> +
> +#endif
> diff --git a/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
> new file mode 100644
> index 0000000..28b49c9
> --- /dev/null
> +++ b/drivers/crypto/rockchip/rk3288_crypto_ablkcipher.c
> @@ -0,0 +1,511 @@
> +/*
> + *Crypto acceleration support for Rockchip RK3288
> + *
> + * Copyright (c) 2015, Fuzhou Rockchip Electronics Co., Ltd
> + *
> + * Author: Zain Wang <zain.wang@rock-chips.com>
> + *
> + * This program is free software; you can redistribute it and/or modify it
> + * under the terms and conditions of the GNU General Public License,
> + * version 2, as published by the Free Software Foundation.
> + *
> + * Some ideas are from marvell-cesa.c and s5p-sss.c driver.
> + */
> +#include "rk3288_crypto.h"
> +
> +#define RK_CRYPTO_DEC BIT(0)
> +#define AES 0
> +#define TDES BIT(16)
> +
> +static void rk_crypto_complete(struct crypto_info_t *dev, int err)
> +{
> + if (dev->ablk_req->base.complete) {
> + if (err)
> + dev_warn(dev->dev, "[%s:%d] err = %d\n",
> + __func__, __LINE__, err);
> + dev->ablk_req->base.complete(&dev->ablk_req->base, err);
> + }
> +}
> +
> +static int rk_handle_req(struct ablkcipher_request *req, int alig_bytes)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> + int err;
> +
> + if (!IS_ALIGNED(req->nbytes, alig_bytes))
> + return -EINVAL;
> +
> + spin_lock(&dev->lock);
> + err = ablkcipher_enqueue_request(&dev->queue, req);
> + spin_unlock(&dev->lock);
> + tasklet_schedule(&dev->crypto_tasklet);
> + return err;
> +}
> +
> +static void rk_ablk_init(struct crypto_info_t *dev,
> + struct ablkcipher_request *req)
> +{
> + dev->left_bytes = req->nbytes;
> + dev->total = req->nbytes;
> + dev->sg_src = req->src;
> + dev->first = req->src;
> + dev->nents = sg_nents(req->src);
> + dev->sg_dst = req->dst;
> + dev->aligned = 1;
> + dev->ablk_req = req;
> +}
> +
> +static int rk_aes_setkey(struct crypto_ablkcipher *cipher,
> + const u8 *key, unsigned int keylen)
> +{
> + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
> + struct rk_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
> +
> + if (!key) {
> + dev_err(ctx->dev->dev, "[%s:%d] no key error\n",
> + __func__, __LINE__);
> + return -EINVAL;
> + }
> +
> + if (keylen != AES_KEYSIZE_128 && keylen != AES_KEYSIZE_192 &&
> + keylen != AES_KEYSIZE_256) {
> + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
> + dev_err(ctx->dev->dev, "[%s:%d] expect key len = %d\n",
> + __func__, __LINE__, keylen);
> + return -EINVAL;
> + }
> + ctx->keylen = keylen;
> + memcpy(ctx->dev->reg + RK_CRYPTO_AES_KEY_0, key, keylen);
> + return 0;
> +}
> +
> +static int rk_tdes_setkey(struct crypto_ablkcipher *cipher,
> + const u8 *key, unsigned int keylen)
> +{
> + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
> + struct rk_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
> + u32 tmp[DES_EXPKEY_WORDS];
> +
> + if (!key) {
> + dev_err(ctx->dev->dev, "[%s:%d] no key error\n",
> + __func__, __LINE__);
> + return -EINVAL;
> + }
> +
> + if (keylen != DES_KEY_SIZE && keylen != DES3_EDE_KEY_SIZE) {
> + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
> + dev_err(ctx->dev->dev, "[%s:%d] expect key len = %d\n",
> + __func__, __LINE__, keylen);
> + return -EINVAL;
> + }
> +
> + if (keylen == DES_KEY_SIZE) {
> + if (!des_ekey(tmp, key) &&
> + (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
> + tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
> + return -EINVAL;
> + }
> + }
> +
> + ctx->keylen = keylen;
> + memcpy(ctx->dev->reg + RK_CRYPTO_TDES_KEY1_0, key, keylen);
> + return 0;
> +}
> +
> +static int rk_aes_ecb_encrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_AES_ECB_MODE | AES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_aes_ecb_decrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_AES_ECB_MODE | RK_CRYPTO_DEC | AES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_aes_cbc_encrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_AES_CBC_MODE | AES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_aes_cbc_decrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_AES_CBC_MODE | RK_CRYPTO_DEC | AES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des_ecb_encrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des_ecb_decrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_DEC | TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des_cbc_encrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_TDES_CHAINMODE | TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des_cbc_decrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_TDES_CHAINMODE | RK_CRYPTO_DEC | TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des3_ede_ecb_encrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_TDES_SELECT | TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des3_ede_ecb_decrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_DEC | TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des3_ede_cbc_encrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE | TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static int rk_des3_ede_cbc_decrypt(struct ablkcipher_request *req)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + struct crypto_info_t *dev = ctx->dev;
> +
> + dev->mode = RK_CRYPTO_TDES_SELECT | RK_CRYPTO_TDES_CHAINMODE |
> + RK_CRYPTO_DEC | TDES;
> + rk_ablk_init(dev, req);
> + return rk_handle_req(req, dev->align_size);
> +}
> +
> +static void rk_ablk_hw_init(struct crypto_info_t *dev)
> +{
> + struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(dev->ablk_req);
> + struct rk_cipher_ctx *ctx = crypto_ablkcipher_ctx(tfm);
> + u32 conf_reg = 0;
> +
> + if (dev->mode & TDES) {
> + dev->mode &= ~TDES;
> + dev->mode |= RK_CRYPTO_TDES_FIFO_MODE |
> + RK_CRYPTO_TDES_BYTESWAP_KEY |
> + RK_CRYPTO_TDES_BYTESWAP_IV;
> + CRYPTO_WRITE(dev, RK_CRYPTO_TDES_CTRL, dev->mode);
> +
> + memcpy(dev->reg + RK_CRYPTO_TDES_IV_0, dev->ablk_req->info, 8);
> + conf_reg = RK_CRYPTO_DESSEL;
> + } else {
> + dev->mode |= RK_CRYPTO_AES_FIFO_MODE |
> + RK_CRYPTO_AES_KEY_CHANGE |
> + RK_CRYPTO_AES_BYTESWAP_KEY |
> + RK_CRYPTO_AES_BYTESWAP_IV;
> +
> + if (ctx->keylen == AES_KEYSIZE_192)
> + dev->mode |= RK_CRYPTO_AES_192BIT_key;
> + else if (ctx->keylen == AES_KEYSIZE_256)
> + dev->mode |= RK_CRYPTO_AES_256BIT_key;
> +
> + CRYPTO_WRITE(dev, RK_CRYPTO_AES_CTRL, dev->mode);
> +
> + memcpy(dev->reg + RK_CRYPTO_AES_IV_0, dev->ablk_req->info, 16);
> + }
> + conf_reg |= RK_CRYPTO_BYTESWAP_BTFIFO |
> + RK_CRYPTO_BYTESWAP_BRFIFO;
> + CRYPTO_WRITE(dev, RK_CRYPTO_CONF, conf_reg);
> + CRYPTO_WRITE(dev, RK_CRYPTO_INTENA,
> + RK_CRYPTO_BCDMA_ERR_ENA | RK_CRYPTO_BCDMA_DONE_ENA);
> +}
> +
> +static void crypto_dma_start(struct crypto_info_t *dev)
> +{
> + CRYPTO_WRITE(dev, RK_CRYPTO_BRDMAS, dev->addr_in);
> + CRYPTO_WRITE(dev, RK_CRYPTO_BRDMAL, dev->count / 4);
> + CRYPTO_WRITE(dev, RK_CRYPTO_BTDMAS, dev->addr_out);
> + CRYPTO_WRITE(dev, RK_CRYPTO_CTRL, RK_CRYPTO_BLOCK_START |
> + (RK_CRYPTO_BLOCK_START << 16));
> +}
> +
> +static int rk_set_data_start(struct crypto_info_t *dev)
> +{
> + int err;
> +
> + err = dev->load_data(dev, dev->sg_src, dev->sg_dst);
> + if (!err)
> + crypto_dma_start(dev);
> + return err;
> +}
> +
> +static int rk_ablk_start(struct crypto_info_t *dev)
> +{
> + int err;
> +
> + spin_lock(&dev->lock);
> + rk_ablk_hw_init(dev);
> + err = rk_set_data_start(dev);
> + spin_unlock(&dev->lock);
> + return err;
> +}
> +
> +/* return:
> + * true some err was occurred
> + * fault no err, continue
> + */
> +static int rk_ablk_rx(struct crypto_info_t *dev)
> +{
> + int err = 0;
> +
> + dev->unload_data(dev);
> + if (!dev->aligned) {
> + if (!sg_pcopy_from_buffer(dev->ablk_req->dst, dev->nents,
> + dev->addr_vir, dev->count,
> + dev->total - dev->left_bytes -
> + dev->count)) {
> + err = -EINVAL;
> + goto out_rx;
> + }
> + }
> + if (dev->left_bytes) {
> + if (dev->aligned) {
> + if (sg_is_last(dev->sg_src)) {
> + dev_err(dev->dev, "[%s:%d], lack of data\n",
> + __func__, __LINE__);
> + err = -ENOMEM;
> + goto out_rx;
> + }
> + dev->sg_src = sg_next(dev->sg_src);
> + dev->sg_dst = sg_next(dev->sg_dst);
> + }
> + err = rk_set_data_start(dev);
> + } else {
> + /* here show the calculation is over without any err */
> + dev->complete(dev, 0);
> + }
> +out_rx:
> + return err;
> +}
> +
> +static int rk_ablk_cra_init(struct crypto_tfm *tfm)
> +{
> + struct rk_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
> +
> + ctx->dev = crypto_p;
> + ctx->dev->align_size = crypto_tfm_alg_alignmask(tfm) + 1;
> + ctx->dev->start = rk_ablk_start;
> + ctx->dev->update = rk_ablk_rx;
> + ctx->dev->complete = rk_crypto_complete;
> + ctx->dev->addr_vir = (char *)__get_free_page(GFP_KERNEL);
> +
> + return ctx->dev->addr_vir ? ctx->dev->enable_clk(ctx->dev) : -ENOMEM;
> +}
> +
> +static void rk_ablk_cra_exit(struct crypto_tfm *tfm)
> +{
> + struct rk_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
> +
> + free_page((unsigned long)ctx->dev->addr_vir);
> + ctx->dev->disable_clk(ctx->dev);
> +}
> +
> +struct crypto_alg rk_ecb_aes_alg = {
> + .cra_name = "ecb(aes)",
> + .cra_driver_name = "ecb-aes-rk",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
> + CRYPTO_ALG_ASYNC,
> + .cra_blocksize = AES_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct rk_cipher_ctx),
> + .cra_alignmask = 0x0f,
> + .cra_type = &crypto_ablkcipher_type,
> + .cra_module = THIS_MODULE,
> + .cra_init = rk_ablk_cra_init,
> + .cra_exit = rk_ablk_cra_exit,
> + .cra_u.ablkcipher = {
> + .min_keysize = AES_MIN_KEY_SIZE,
> + .max_keysize = AES_MAX_KEY_SIZE,
> + .setkey = rk_aes_setkey,
> + .encrypt = rk_aes_ecb_encrypt,
> + .decrypt = rk_aes_ecb_decrypt,
> + }
> +};
> +
> +struct crypto_alg rk_cbc_aes_alg = {
> + .cra_name = "cbc(aes)",
> + .cra_driver_name = "cbc-aes-rk",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
> + CRYPTO_ALG_ASYNC,
> + .cra_blocksize = AES_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct rk_cipher_ctx),
> + .cra_alignmask = 0x0f,
> + .cra_type = &crypto_ablkcipher_type,
> + .cra_module = THIS_MODULE,
> + .cra_init = rk_ablk_cra_init,
> + .cra_exit = rk_ablk_cra_exit,
> + .cra_u.ablkcipher = {
> + .min_keysize = AES_MIN_KEY_SIZE,
> + .max_keysize = AES_MAX_KEY_SIZE,
> + .ivsize = AES_BLOCK_SIZE,
> + .setkey = rk_aes_setkey,
> + .encrypt = rk_aes_cbc_encrypt,
> + .decrypt = rk_aes_cbc_decrypt,
> + }
> +};
> +
> +struct crypto_alg rk_ecb_des_alg = {
> + .cra_name = "ecb(des)",
> + .cra_driver_name = "ecb-des-rk",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
> + CRYPTO_ALG_ASYNC,
> + .cra_blocksize = DES_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct rk_cipher_ctx),
> + .cra_alignmask = 0x07,
> + .cra_type = &crypto_ablkcipher_type,
> + .cra_module = THIS_MODULE,
> + .cra_init = rk_ablk_cra_init,
> + .cra_exit = rk_ablk_cra_exit,
> + .cra_u.ablkcipher = {
> + .min_keysize = DES_KEY_SIZE,
> + .max_keysize = DES_KEY_SIZE,
> + .setkey = rk_tdes_setkey,
> + .encrypt = rk_des_ecb_encrypt,
> + .decrypt = rk_des_ecb_decrypt,
> + }
> +};
> +
> +struct crypto_alg rk_cbc_des_alg = {
> + .cra_name = "cbc(des)",
> + .cra_driver_name = "cbc-des-rk",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
> + CRYPTO_ALG_ASYNC,
> + .cra_blocksize = DES_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct rk_cipher_ctx),
> + .cra_alignmask = 0x07,
> + .cra_type = &crypto_ablkcipher_type,
> + .cra_module = THIS_MODULE,
> + .cra_init = rk_ablk_cra_init,
> + .cra_exit = rk_ablk_cra_exit,
> + .cra_u.ablkcipher = {
> + .min_keysize = DES_KEY_SIZE,
> + .max_keysize = DES_KEY_SIZE,
> + .ivsize = DES_BLOCK_SIZE,
> + .setkey = rk_tdes_setkey,
> + .encrypt = rk_des_cbc_encrypt,
> + .decrypt = rk_des_cbc_decrypt,
> + }
> +};
> +
> +struct crypto_alg rk_ecb_des3_ede_alg = {
> + .cra_name = "ecb(des3_ede)",
> + .cra_driver_name = "ecb-des3-ede-rk",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
> + CRYPTO_ALG_ASYNC,
> + .cra_blocksize = DES_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct rk_cipher_ctx),
> + .cra_alignmask = 0x07,
> + .cra_type = &crypto_ablkcipher_type,
> + .cra_module = THIS_MODULE,
> + .cra_init = rk_ablk_cra_init,
> + .cra_exit = rk_ablk_cra_exit,
> + .cra_u.ablkcipher = {
> + .min_keysize = DES3_EDE_KEY_SIZE,
> + .max_keysize = DES3_EDE_KEY_SIZE,
> + .ivsize = DES_BLOCK_SIZE,
> + .setkey = rk_tdes_setkey,
> + .encrypt = rk_des3_ede_ecb_encrypt,
> + .decrypt = rk_des3_ede_ecb_decrypt,
> + }
> +};
> +
> +struct crypto_alg rk_cbc_des3_ede_alg = {
> + .cra_name = "cbc(des3_ede)",
> + .cra_driver_name = "cbc-des3-ede-rk",
> + .cra_priority = 300,
> + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
> + CRYPTO_ALG_ASYNC,
> + .cra_blocksize = DES_BLOCK_SIZE,
> + .cra_ctxsize = sizeof(struct rk_cipher_ctx),
> + .cra_alignmask = 0x07,
> + .cra_type = &crypto_ablkcipher_type,
> + .cra_module = THIS_MODULE,
> + .cra_init = rk_ablk_cra_init,
> + .cra_exit = rk_ablk_cra_exit,
> + .cra_u.ablkcipher = {
> + .min_keysize = DES3_EDE_KEY_SIZE,
> + .max_keysize = DES3_EDE_KEY_SIZE,
> + .ivsize = DES_BLOCK_SIZE,
> + .setkey = rk_tdes_setkey,
> + .encrypt = rk_des3_ede_cbc_encrypt,
> + .decrypt = rk_des3_ede_cbc_decrypt,
> + }
> +};

--
Thanks,
Caesar