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# 2cf1e703 14-Jan-2021 Ioana Ciornei <[email protected]>

bus: fsl-mc: add fsl-mc userspace support

Adding userspace support for the MC (Management Complex) means exporting
an ioctl capable device file representing the root resource container.

This new fu

bus: fsl-mc: add fsl-mc userspace support

Adding userspace support for the MC (Management Complex) means exporting
an ioctl capable device file representing the root resource container.

This new functionality in the fsl-mc bus driver intends to provide
userspace applications an interface to interact with the MC firmware.

Commands that are composed in userspace are sent to the MC firmware
through the FSL_MC_SEND_MC_COMMAND ioctl. By default the implicit MC
I/O portal is used for this operation, but if the implicit one is busy,
a dynamic portal is allocated and then freed upon execution.

The command received through the ioctl interface is checked against a
known whitelist of accepted MC commands. Commands that attempt a change
in hardware configuration will need CAP_NET_ADMIN, while commands used
in debugging do not need it.

Acked-by: Laurentiu Tudor <[email protected]>
Signed-off-by: Ioana Ciornei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...


# 8544717c 14-Jan-2021 Ioana Ciornei <[email protected]>

bus: fsl-mc: move fsl_mc_command struct in a uapi header

Define "struct fsl_mc_command" as a structure that can cross the
user/kernel boundary.

Acked-by: Laurentiu Tudor <[email protected]>
S

bus: fsl-mc: move fsl_mc_command struct in a uapi header

Define "struct fsl_mc_command" as a structure that can cross the
user/kernel boundary.

Acked-by: Laurentiu Tudor <[email protected]>
Signed-off-by: Ioana Ciornei <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

show more ...