mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-06 16:49:22 +00:00
2cf1e703f0
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 <laurentiu.tudor@nxp.com> Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20210114170752.2927915-4-ciorneiioana@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
23 lines
769 B
Text
23 lines
769 B
Text
# SPDX-License-Identifier: GPL-2.0
|
|
#
|
|
# DPAA2 fsl-mc bus
|
|
#
|
|
# Copyright (C) 2014-2016 Freescale Semiconductor, Inc.
|
|
#
|
|
|
|
config FSL_MC_BUS
|
|
bool "QorIQ DPAA2 fsl-mc bus driver"
|
|
depends on OF && (ARCH_LAYERSCAPE || (COMPILE_TEST && (ARM || ARM64 || X86_LOCAL_APIC || PPC)))
|
|
select GENERIC_MSI_IRQ_DOMAIN
|
|
help
|
|
Driver to enable the bus infrastructure for the QorIQ DPAA2
|
|
architecture. The fsl-mc bus driver handles discovery of
|
|
DPAA2 objects (which are represented as Linux devices) and
|
|
binding objects to drivers.
|
|
|
|
config FSL_MC_UAPI_SUPPORT
|
|
bool "Management Complex (MC) userspace support"
|
|
depends on FSL_MC_BUS
|
|
help
|
|
Provides userspace support for interrogating, creating, destroying or
|
|
configuring DPAA2 objects exported by the Management Complex.
|