linux-kernel - Re: [PATCH v12 2/4] crypto: loongson

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Message-ID: <20250819125518.GF7508@google.com>
Date: Tue, 19 Aug 2025 13:55:18 +0100
From: Lee Jones <lee@...nel.org>
To: Qunqin Zhao <zhaoqunqin@...ngson.cn>
Cc: herbert@...dor.apana.org.au, jarkko@...nel.org,
	linux-kernel@...r.kernel.org, loongarch@...ts.linux.dev,
	davem@...emloft.net, linux-crypto@...r.kernel.org,
	peterhuewe@....de, jgg@...pe.ca, linux-integrity@...r.kernel.org,
	Yinggang Gu <guyinggang@...ngson.cn>,
	Huacai Chen <chenhuacai@...ngson.cn>
Subject: Re: [PATCH v12 2/4] crypto: loongson - add Loongson RNG driver
 support

On Sat, 05 Jul 2025, Qunqin Zhao wrote:

> Loongson's Random Number Generator is found inside Loongson Security
> Engine chip.
> 
> Co-developed-by: Yinggang Gu <guyinggang@...ngson.cn>
> Signed-off-by: Yinggang Gu <guyinggang@...ngson.cn>
> Signed-off-by: Qunqin Zhao <zhaoqunqin@...ngson.cn>
> Reviewed-by: Huacai Chen <chenhuacai@...ngson.cn>
> ---
>  drivers/crypto/Kconfig                 |   1 +
>  drivers/crypto/Makefile                |   1 +
>  drivers/crypto/loongson/Kconfig        |   5 +
>  drivers/crypto/loongson/Makefile       |   1 +
>  drivers/crypto/loongson/loongson-rng.c | 209 +++++++++++++++++++++++++
>  5 files changed, 217 insertions(+)
>  create mode 100644 drivers/crypto/loongson/Kconfig
>  create mode 100644 drivers/crypto/loongson/Makefile
>  create mode 100644 drivers/crypto/loongson/loongson-rng.c
> 
> diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig
> index 9f8a3a5be..f6117bc77 100644
> --- a/drivers/crypto/Kconfig
> +++ b/drivers/crypto/Kconfig
> @@ -827,6 +827,7 @@ config CRYPTO_DEV_CCREE
>  	  If unsure say Y.
>  
>  source "drivers/crypto/hisilicon/Kconfig"
> +source "drivers/crypto/loongson/Kconfig"
>  
>  source "drivers/crypto/amlogic/Kconfig"
>  
> diff --git a/drivers/crypto/Makefile b/drivers/crypto/Makefile
> index 22eadcc8f..125b99b24 100644
> --- a/drivers/crypto/Makefile
> +++ b/drivers/crypto/Makefile
> @@ -44,6 +44,7 @@ obj-y += inside-secure/
>  obj-$(CONFIG_CRYPTO_DEV_ARTPEC6) += axis/
>  obj-y += xilinx/
>  obj-y += hisilicon/
> +obj-y += loongson/
>  obj-$(CONFIG_CRYPTO_DEV_AMLOGIC_GXL) += amlogic/
>  obj-y += intel/
>  obj-y += starfive/
> diff --git a/drivers/crypto/loongson/Kconfig b/drivers/crypto/loongson/Kconfig
> new file mode 100644
> index 000000000..15475da8f
> --- /dev/null
> +++ b/drivers/crypto/loongson/Kconfig
> @@ -0,0 +1,5 @@
> +config CRYPTO_DEV_LOONGSON_RNG
> +	tristate "Support for Loongson RNG Driver"
> +	depends on MFD_LOONGSON_SE
> +	help
> +	  Support for Loongson RNG Driver.
> diff --git a/drivers/crypto/loongson/Makefile b/drivers/crypto/loongson/Makefile
> new file mode 100644
> index 000000000..1ce5ec32b
> --- /dev/null
> +++ b/drivers/crypto/loongson/Makefile
> @@ -0,0 +1 @@
> +obj-$(CONFIG_CRYPTO_DEV_LOONGSON_RNG)  += loongson-rng.o
> diff --git a/drivers/crypto/loongson/loongson-rng.c b/drivers/crypto/loongson/loongson-rng.c
> new file mode 100644
> index 000000000..3a4940260
> --- /dev/null
> +++ b/drivers/crypto/loongson/loongson-rng.c
> @@ -0,0 +1,209 @@
> +// SPDX-License-Identifier: GPL-2.0
> +/* Copyright (c) 2019 HiSilicon Limited. */
> +/* Copyright (c) 2025 Loongson Technology Corporation Limited. */
> +
> +#include <linux/crypto.h>
> +#include <linux/err.h>
> +#include <linux/hw_random.h>
> +#include <linux/io.h>
> +#include <linux/iopoll.h>
> +#include <linux/kernel.h>
> +#include <linux/list.h>
> +#include <linux/mfd/loongson-se.h>

This depends on the first patch in the series.

Does this one have an Ack?

-- 
Lee Jones [李琼斯]