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Message-ID: <09b4656d-a16c-4ae9-b1be-4320e093b974@linaro.org>
Date: Mon, 12 Feb 2024 18:12:25 +0100
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From: neil.armstrong@linaro.org
Reply-To: neil.armstrong@linaro.org
Subject: Re: [PATCH v4 07/20] drivers: crypto: meson: move algs definition and
 cipher API to cipher.c
Content-Language: en-US, fr
To: Alexey Romanov <avromanov@salutedevices.com>, clabbe@baylibre.com,
 herbert@gondor.apana.org.au, davem@davemloft.net, robh+dt@kernel.org,
 krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org,
 khilman@baylibre.com, jbrunet@baylibre.com,
 martin.blumenstingl@googlemail.com, vadim.fedorenko@linux.dev
Cc: linux-crypto@vger.kernel.org, linux-amlogic@lists.infradead.org,
 linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
 linux-arm-kernel@lists.infradead.org, kernel@salutedevices.com
References: <20240212135108.549755-1-avromanov@salutedevices.com>
 <20240212135108.549755-8-avromanov@salutedevices.com>
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Organization: Linaro Developer Services
In-Reply-To: <20240212135108.549755-8-avromanov@salutedevices.com>
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On 12/02/2024 14:50, Alexey Romanov wrote:
> Because that is proper place for them. In particular,
> it takes less of exported symbol between compiling entities.
> 
> Signed-off-by: Alexey Romanov <avromanov@salutedevices.com>
> ---
>   drivers/crypto/amlogic/amlogic-gxl-cipher.c |  98 +++++++++++++++--
>   drivers/crypto/amlogic/amlogic-gxl-core.c   | 110 ++++----------------
>   drivers/crypto/amlogic/amlogic-gxl.h        |  14 +--
>   3 files changed, 119 insertions(+), 103 deletions(-)
> 
> diff --git a/drivers/crypto/amlogic/amlogic-gxl-cipher.c b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
> index dc0b100c5de2..bc3092a8a2c2 100644
> --- a/drivers/crypto/amlogic/amlogic-gxl-cipher.c
> +++ b/drivers/crypto/amlogic/amlogic-gxl-cipher.c
> @@ -271,7 +271,7 @@ int meson_handle_cipher_request(struct crypto_engine *engine, void *areq)
>   	return 0;
>   }
>   
> -int meson_skdecrypt(struct skcipher_request *areq)
> +static int meson_skdecrypt(struct skcipher_request *areq)
>   {
>   	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
>   	struct meson_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
> @@ -289,7 +289,7 @@ int meson_skdecrypt(struct skcipher_request *areq)
>   	return crypto_transfer_skcipher_request_to_engine(engine, areq);
>   }
>   
> -int meson_skencrypt(struct skcipher_request *areq)
> +static int meson_skencrypt(struct skcipher_request *areq)
>   {
>   	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(areq);
>   	struct meson_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
> @@ -307,7 +307,7 @@ int meson_skencrypt(struct skcipher_request *areq)
>   	return crypto_transfer_skcipher_request_to_engine(engine, areq);
>   }
>   
> -int meson_cipher_init(struct crypto_tfm *tfm)
> +static int meson_cipher_init(struct crypto_tfm *tfm)
>   {
>   	struct meson_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
>   	struct meson_alg_template *algt;
> @@ -333,7 +333,7 @@ int meson_cipher_init(struct crypto_tfm *tfm)
>   	return 0;
>   }
>   
> -void meson_cipher_exit(struct crypto_tfm *tfm)
> +static void meson_cipher_exit(struct crypto_tfm *tfm)
>   {
>   	struct meson_cipher_tfm_ctx *op = crypto_tfm_ctx(tfm);
>   
> @@ -341,8 +341,8 @@ void meson_cipher_exit(struct crypto_tfm *tfm)
>   	crypto_free_skcipher(op->fallback_tfm);
>   }
>   
> -int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
> -		     unsigned int keylen)
> +static int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
> +			    unsigned int keylen)
>   {
>   	struct meson_cipher_tfm_ctx *op = crypto_skcipher_ctx(tfm);
>   	struct meson_dev *mc = op->mc;
> @@ -369,3 +369,89 @@ int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
>   
>   	return crypto_skcipher_setkey(op->fallback_tfm, key, keylen);
>   }
> +
> +static struct meson_alg_template algs[] = {
> +{
> +	.type = CRYPTO_ALG_TYPE_SKCIPHER,
> +	.blockmode = MESON_OPMODE_CBC,
> +	.alg.skcipher.base = {
> +		.base = {
> +			.cra_name = "cbc(aes)",
> +			.cra_driver_name = "cbc-aes-gxl",
> +			.cra_priority = 400,
> +			.cra_blocksize = AES_BLOCK_SIZE,
> +			.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
> +				CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY |
> +				CRYPTO_ALG_NEED_FALLBACK,
> +			.cra_ctxsize = sizeof(struct meson_cipher_tfm_ctx),
> +			.cra_module = THIS_MODULE,
> +			.cra_alignmask = 0xf,
> +			.cra_init = meson_cipher_init,
> +			.cra_exit = meson_cipher_exit,
> +		},
> +		.min_keysize	= AES_MIN_KEY_SIZE,
> +		.max_keysize	= AES_MAX_KEY_SIZE,
> +		.ivsize		= AES_BLOCK_SIZE,
> +		.setkey		= meson_aes_setkey,
> +		.encrypt	= meson_skencrypt,
> +		.decrypt	= meson_skdecrypt,
> +	},
> +	.alg.skcipher.op = {
> +		.do_one_request = meson_handle_cipher_request,
> +	},
> +},
> +{
> +	.type = CRYPTO_ALG_TYPE_SKCIPHER,
> +	.blockmode = MESON_OPMODE_ECB,
> +	.alg.skcipher.base = {
> +		.base = {
> +			.cra_name = "ecb(aes)",
> +			.cra_driver_name = "ecb-aes-gxl",
> +			.cra_priority = 400,
> +			.cra_blocksize = AES_BLOCK_SIZE,
> +			.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
> +				CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY |
> +				CRYPTO_ALG_NEED_FALLBACK,
> +			.cra_ctxsize = sizeof(struct meson_cipher_tfm_ctx),
> +			.cra_module = THIS_MODULE,
> +			.cra_alignmask = 0xf,
> +			.cra_init = meson_cipher_init,
> +			.cra_exit = meson_cipher_exit,
> +		},
> +		.min_keysize	= AES_MIN_KEY_SIZE,
> +		.max_keysize	= AES_MAX_KEY_SIZE,
> +		.setkey		= meson_aes_setkey,
> +		.encrypt	= meson_skencrypt,
> +		.decrypt	= meson_skdecrypt,
> +	},
> +	.alg.skcipher.op = {
> +		.do_one_request = meson_handle_cipher_request,
> +	},
> +},
> +};
> +
> +int meson_cipher_register(struct meson_dev *mc)
> +{
> +	return meson_register_algs(mc, algs, ARRAY_SIZE(algs));
> +}
> +
> +void meson_cipher_unregister(struct meson_dev *mc)
> +{
> +	meson_unregister_algs(mc, algs, ARRAY_SIZE(algs));
> +}
> +
> +void meson_cipher_debugfs_show(struct seq_file *seq, void *v)
> +{
> +	int i;
> +
> +	for (i = 0; i < ARRAY_SIZE(algs); i++) {
> +		seq_printf(seq, "%s %s %lu %lu\n",
> +			   algs[i].alg.skcipher.base.base.cra_driver_name,
> +			   algs[i].alg.skcipher.base.base.cra_name,
> +#ifdef CONFIG_CRYPTO_DEV_AMLOGIC_GXL_DEBUG
> +			   algs[i].stat_req, algs[i].stat_fb);
> +#else
> +			   0ul, 0ul);
> +#endif
> +	}
> +}
> diff --git a/drivers/crypto/amlogic/amlogic-gxl-core.c b/drivers/crypto/amlogic/amlogic-gxl-core.c
> index f7c60ebffbc3..22ff2768b5e5 100644
> --- a/drivers/crypto/amlogic/amlogic-gxl-core.c
> +++ b/drivers/crypto/amlogic/amlogic-gxl-core.c
> @@ -65,66 +65,6 @@ static irqreturn_t meson_irq_handler(int irq, void *data)
>   	return IRQ_HANDLED;
>   }
>   
> -static struct meson_alg_template mc_algs[] = {
> -{
> -	.type = CRYPTO_ALG_TYPE_SKCIPHER,
> -	.blockmode = MESON_OPMODE_CBC,
> -	.alg.skcipher.base = {
> -		.base = {
> -			.cra_name = "cbc(aes)",
> -			.cra_driver_name = "cbc-aes-gxl",
> -			.cra_priority = 400,
> -			.cra_blocksize = AES_BLOCK_SIZE,
> -			.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
> -				CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY |
> -				CRYPTO_ALG_NEED_FALLBACK,
> -			.cra_ctxsize = sizeof(struct meson_cipher_tfm_ctx),
> -			.cra_module = THIS_MODULE,
> -			.cra_alignmask = 0xf,
> -			.cra_init = meson_cipher_init,
> -			.cra_exit = meson_cipher_exit,
> -		},
> -		.min_keysize	= AES_MIN_KEY_SIZE,
> -		.max_keysize	= AES_MAX_KEY_SIZE,
> -		.ivsize		= AES_BLOCK_SIZE,
> -		.setkey		= meson_aes_setkey,
> -		.encrypt	= meson_skencrypt,
> -		.decrypt	= meson_skdecrypt,
> -	},
> -	.alg.skcipher.op = {
> -		.do_one_request = meson_handle_cipher_request,
> -	},
> -},
> -{
> -	.type = CRYPTO_ALG_TYPE_SKCIPHER,
> -	.blockmode = MESON_OPMODE_ECB,
> -	.alg.skcipher.base = {
> -		.base = {
> -			.cra_name = "ecb(aes)",
> -			.cra_driver_name = "ecb-aes-gxl",
> -			.cra_priority = 400,
> -			.cra_blocksize = AES_BLOCK_SIZE,
> -			.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER |
> -				CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY |
> -				CRYPTO_ALG_NEED_FALLBACK,
> -			.cra_ctxsize = sizeof(struct meson_cipher_tfm_ctx),
> -			.cra_module = THIS_MODULE,
> -			.cra_alignmask = 0xf,
> -			.cra_init = meson_cipher_init,
> -			.cra_exit = meson_cipher_exit,
> -		},
> -		.min_keysize	= AES_MIN_KEY_SIZE,
> -		.max_keysize	= AES_MAX_KEY_SIZE,
> -		.setkey		= meson_aes_setkey,
> -		.encrypt	= meson_skencrypt,
> -		.decrypt	= meson_skdecrypt,
> -	},
> -	.alg.skcipher.op = {
> -		.do_one_request = meson_handle_cipher_request,
> -	},
> -},
> -};
> -
>   static int meson_debugfs_show(struct seq_file *seq, void *v)
>   {
>   	struct meson_dev *mc __maybe_unused = seq->private;
> @@ -138,20 +78,8 @@ static int meson_debugfs_show(struct seq_file *seq, void *v)
>   			   0ul);
>   #endif
>   
> -	for (i = 0; i < ARRAY_SIZE(mc_algs); i++) {
> -		switch (mc_algs[i].type) {
> -		case CRYPTO_ALG_TYPE_SKCIPHER:
> -			seq_printf(seq, "%s %s %lu %lu\n",
> -				   mc_algs[i].alg.skcipher.base.base.cra_driver_name,
> -				   mc_algs[i].alg.skcipher.base.base.cra_name,
> -#ifdef CONFIG_CRYPTO_DEV_AMLOGIC_GXL_DEBUG
> -				   mc_algs[i].stat_req, mc_algs[i].stat_fb);
> -#else
> -				   0ul, 0ul);
> -#endif
> -			break;
> -		}
> -	}
> +	meson_cipher_debugfs_show(seq, v);
> +
>   	return 0;
>   }
>   DEFINE_SHOW_ATTRIBUTE(meson_debugfs);
> @@ -228,38 +156,40 @@ static int meson_allocate_chanlist(struct meson_dev *mc)
>   	return err;
>   }
>   
> -static int meson_register_algs(struct meson_dev *mc)
> +int meson_register_algs(struct meson_dev *mc, struct meson_alg_template *algs,
> +			unsigned int count)
>   {
>   	int err, i;
>   
> -	for (i = 0; i < ARRAY_SIZE(mc_algs); i++) {
> -		mc_algs[i].mc = mc;
> -		switch (mc_algs[i].type) {
> +	for (i = 0; i < count; i++) {
> +		switch (algs[i].type) {
>   		case CRYPTO_ALG_TYPE_SKCIPHER:
> -			err = crypto_engine_register_skcipher(&mc_algs[i].alg.skcipher);
> +			err = crypto_engine_register_skcipher(&algs[i].alg.skcipher);
>   			if (err) {
>   				dev_err(mc->dev, "Fail to register %s\n",
> -					mc_algs[i].alg.skcipher.base.base.cra_name);
> -				mc_algs[i].mc = NULL;
> +					algs[i].alg.skcipher.base.base.cra_name);
> +				meson_unregister_algs(mc, algs, count);
>   				return err;
>   			}
>   			break;
>   		}
> +		algs[i].mc = mc;
>   	}
>   
>   	return 0;
>   }
>   
> -static void meson_unregister_algs(struct meson_dev *mc)
> +void meson_unregister_algs(struct meson_dev *mc, struct meson_alg_template *algs,
> +			   unsigned int count)
>   {
>   	int i;
>   
> -	for (i = 0; i < ARRAY_SIZE(mc_algs); i++) {
> -		if (!mc_algs[i].mc)
> +	for (i = 0; i < count; i++) {
> +		if (!algs[i].mc)
>   			continue;
> -		switch (mc_algs[i].type) {
> +		switch (algs[i].type) {
>   		case CRYPTO_ALG_TYPE_SKCIPHER:
> -			crypto_engine_unregister_skcipher(&mc_algs[i].alg.skcipher);
> +			crypto_engine_unregister_skcipher(&algs[i].alg.skcipher);
>   			break;
>   		}
>   	}
> @@ -318,9 +248,9 @@ static int meson_crypto_probe(struct platform_device *pdev)
>   	if (err)
>   		goto error_flow;
>   
> -	err = meson_register_algs(mc);
> +	err = meson_cipher_register(mc);
>   	if (err)
> -		goto error_alg;
> +		goto error_flow;
>   
>   	if (IS_ENABLED(CONFIG_CRYPTO_DEV_AMLOGIC_GXL_DEBUG)) {
>   		struct dentry *dbgfs_dir;
> @@ -334,8 +264,6 @@ static int meson_crypto_probe(struct platform_device *pdev)
>   	}
>   
>   	return 0;
> -error_alg:
> -	meson_unregister_algs(mc);
>   error_flow:
>   	meson_free_chanlist(mc, mc->flow_cnt - 1);
>   	return err;
> @@ -349,7 +277,7 @@ static void meson_crypto_remove(struct platform_device *pdev)
>   	debugfs_remove_recursive(mc->dbgfs_dir);
>   #endif
>   
> -	meson_unregister_algs(mc);
> +	meson_cipher_unregister(mc);
>   
>   	meson_free_chanlist(mc, mc->flow_cnt - 1);
>   }
> diff --git a/drivers/crypto/amlogic/amlogic-gxl.h b/drivers/crypto/amlogic/amlogic-gxl.h
> index e27908992ae3..0a03e8144977 100644
> --- a/drivers/crypto/amlogic/amlogic-gxl.h
> +++ b/drivers/crypto/amlogic/amlogic-gxl.h
> @@ -167,10 +167,12 @@ void meson_dma_start(struct meson_dev *mc, int flow);
>   
>   int meson_enqueue(struct crypto_async_request *areq, u32 type);
>   
> -int meson_aes_setkey(struct crypto_skcipher *tfm, const u8 *key,
> -		     unsigned int keylen);
> -int meson_cipher_init(struct crypto_tfm *tfm);
> -void meson_cipher_exit(struct crypto_tfm *tfm);
> -int meson_skdecrypt(struct skcipher_request *areq);
> -int meson_skencrypt(struct skcipher_request *areq);
> +int meson_register_algs(struct meson_dev *mc, struct meson_alg_template *algs,
> +			unsigned int count);
> +void meson_unregister_algs(struct meson_dev *mc, struct meson_alg_template *algs,
> +			   unsigned int count);
> +
> +int meson_cipher_register(struct meson_dev *mc);
> +void meson_cipher_unregister(struct meson_dev *mc);
> +void meson_cipher_debugfs_show(struct seq_file *seq, void *v);
>   int meson_handle_cipher_request(struct crypto_engine *engine, void *areq);

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>