On Wed, 26 Feb 2025, Qunqin Zhao wrote:
> This driver supports Loongson Security Module, which provides the control
> for it's hardware encryption acceleration child devices.
>
> Co-developed-by: Yinggang Gu <guyingg...@loongson.cn>
> Signed-off-by: Yinggang Gu <guyingg...@loongson.cn>
> Signed-off-by: Qunqin Zhao <zhaoqun...@loongson.cn>
> ---
> v3-v4: None
>
> v2: Removed "ls6000se-sdf" device, added "ls6000se-tpm" device.
> Passed dmamem size to SE firmware in se_init_hw() function.
>
> drivers/mfd/Kconfig | 10 +
> drivers/mfd/Makefile | 2 +
> drivers/mfd/ls6000se.c | 374 +++++++++++++++++++++++++++++++++++
> include/linux/mfd/ls6000se.h | 75 +++++++
> 4 files changed, 461 insertions(+)
> create mode 100644 drivers/mfd/ls6000se.c
> create mode 100644 include/linux/mfd/ls6000se.h
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index d44c69bb3d..318fb113c1 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -2439,5 +2439,15 @@ config MFD_UPBOARD_FPGA
> To compile this driver as a module, choose M here: the module will be
> called upboard-fpga.
>
> +config MFD_LS6000SE
> + tristate "Loongson Security Module Interface"
> + depends on LOONGARCH && ACPI
> + select MFD_CORE
> + help
> + The Loongson security module provides the control for hardware
> + encryption acceleration devices. Each device uses at least one
> + channel to interact with security module, and each channel may
> + have its own buffer provided by security module.
> +
> endmenu
> endif
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index 9220eaf7cf..9556de7715 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -294,3 +294,5 @@ obj-$(CONFIG_MFD_RSMU_I2C) += rsmu_i2c.o
> rsmu_core.o
> obj-$(CONFIG_MFD_RSMU_SPI) += rsmu_spi.o rsmu_core.o
>
> obj-$(CONFIG_MFD_UPBOARD_FPGA) += upboard-fpga.o
> +
> +obj-$(CONFIG_MFD_LS6000SE) += ls6000se.o
> diff --git a/drivers/mfd/ls6000se.c b/drivers/mfd/ls6000se.c
> new file mode 100644
> index 0000000000..24d76c2ffc
> --- /dev/null
> +++ b/drivers/mfd/ls6000se.c
[...]
> +static const struct mfd_cell se_devs[] = {
> + { .name = "ls6000se-sdf" },
> + { .name = "ls6000se-tpm" },
> +};
Where are the drivers for these devices? I don't see them anywhere.
I do see ls6000se-rng. How is that registered?
--
Lee Jones [李琼斯]
