APPLIED: [SRU][J:linux-bluefield][PATCH v1 0/1] UBUNTU: SAUCE: mlx-bootctl: support icm carveout eeprom region read/write

[Bartlomiej Zolnierkiewicz]

Applied to jammy:linux-bluefield/master-next. Thanks.

--
Best regards,
Bartlomiej

On Mon, Oct 31, 2022 at 5:19 PM Asmaa Mnebhi <asmaa at nvidia.com> wrote:
>
> BugLink: https://bugs.launchpad.net/bugs/1995296
>
> SRU Justification:
>
> [Impact]
>
> The BlueField-3 ICM carveout feature will enable NIC FW to bypass the SMMU block
> to access DRAM memory. The amount of memory accessible by FW will be controlled by ARM.
> This patch enables setting the size of the large ICM carveout from
> userspace. The max size is 1TB, has a granularity of 128MB and will be passed
> and printed in hex. The size unit is MB.
>
> [Fix]
>
> * Support SMC calls to control the large ICM carveout size.
>
> [Test Case]
>
> * Only valid testing on BlueField-3 real hardware.
> * set the region size from sysfs and NIC FW will test that it has access to the entire region requested.
>
> [Regression Potential]
>
> * This code doesn't really have a negative impact on the functionality of the mlxbf-bootctl
>   driver itself but could be a risk for the overall boot if not used/tested properly.
> * memory region requested is too large, adn linux cannot boot as a result. The memory
>   allocated for the ICM carveout cannot be accessed by linux.
> * the icmc size is not passed properly to NIC FW
>
> Asmaa Mnebhi (1):
>   UBUNTU: SAUCE: mlx-bootctl: support icm carveout eeprom region
>     read/write
>
>  drivers/platform/mellanox/mlxbf-bootctl.c | 40 +++++++++++++++++++++++
>  drivers/platform/mellanox/mlxbf-bootctl.h |  9 +++++
>  2 files changed, 49 insertions(+)
>
> --
> 2.30.1