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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> |
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.. | ||
fsl-mc | ||
mhi | ||
arm-cci.c | ||
arm-integrator-lm.c | ||
brcmstb_gisb.c | ||
bt1-apb.c | ||
bt1-axi.c | ||
da8xx-mstpri.c | ||
hisi_lpc.c | ||
imx-weim.c | ||
Kconfig | ||
Makefile | ||
mips_cdmm.c | ||
moxtet.c | ||
mvebu-mbus.c | ||
omap-ocp2scp.c | ||
omap_l3_noc.c | ||
omap_l3_noc.h | ||
omap_l3_smx.c | ||
omap_l3_smx.h | ||
qcom-ebi2.c | ||
simple-pm-bus.c | ||
sun50i-de2.c | ||
sunxi-rsb.c | ||
tegra-aconnect.c | ||
tegra-gmi.c | ||
ti-pwmss.c | ||
ti-sysc.c | ||
ts-nbus.c | ||
uniphier-system-bus.c | ||
vexpress-config.c |