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| author | Ioana Ciornei <ioana.ciornei@nxp.com> | 2021-01-14 18:07:50 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-01-27 15:13:52 +0100 |
| commit | 2cf1e703f066cfa82eb5a358ae84c29fe15a3b3a (patch) | |
| tree | 93d20834f3d19ba11f5d84774d5fd7390cd33a69 /Documentation/userspace-api/ioctl | |
| parent | bus: fsl-mc: export mc_cmd_hdr_read_cmdid() to the fsl-mc bus (diff) | |
| download | linux-2cf1e703f066cfa82eb5a358ae84c29fe15a3b3a.tar.xz linux-2cf1e703f066cfa82eb5a358ae84c29fe15a3b3a.zip | |
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 <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>
Diffstat (limited to 'Documentation/userspace-api/ioctl')
| -rw-r--r-- | Documentation/userspace-api/ioctl/ioctl-number.rst | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/Documentation/userspace-api/ioctl/ioctl-number.rst b/Documentation/userspace-api/ioctl/ioctl-number.rst index a4c75a28c839..19d730f9d136 100644 --- a/Documentation/userspace-api/ioctl/ioctl-number.rst +++ b/Documentation/userspace-api/ioctl/ioctl-number.rst @@ -180,6 +180,7 @@ Code Seq# Include File Comments 'R' 00-1F linux/random.h conflict! 'R' 01 linux/rfkill.h conflict! 'R' C0-DF net/bluetooth/rfcomm.h +'R' E0 uapi/linux/fsl_mc.h 'S' all linux/cdrom.h conflict! 'S' 80-81 scsi/scsi_ioctl.h conflict! 'S' 82-FF scsi/scsi.h conflict! |