fwctl/cxl: Fix uuid_t usage in uapi

The uuid_t type is kernel internal, and Paul reports the following build
error when it is used in a uapi header:

usr/include/cxl/features.h:59:9: error: unkn

fwctl/cxl: Fix uuid_t usage in uapi

The uuid_t type is kernel internal, and Paul reports the following build
error when it is used in a uapi header:

usr/include/cxl/features.h:59:9: error: unknown type name ‘uuid_t’

Create a uuid type (__uapi_uuid_t) compatible with the longstanding
definition uuid/uuid.h for userspace builds, and use uuid_t directly for
kernel builds.

Fixes: 9b8e73cdb141 ("cxl: Move cxl feature command structs to user header")
Link: https://patch.msgid.link/r/174430961702.617339.13963021112051029933.stgit@dwillia2-xfh.jf.intel.com
Suggested-by: Jason Gunthorpe <[email protected]>
Reported-by: Paul E. McKenney <[email protected]>
Closes: http://lore.kernel.org/f6489337-67c7-48c8-b48a-58603ec15328@paulmck-laptop
Reported-by: kernel test robot <[email protected]>
Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/
Signed-off-by: Dan Williams <[email protected]>
Reviewed-by: Dave Jiang <[email protected]>
Tested-by: Paul E. McKenney <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

show more ...

cxl: Add support for fwctl RPC command to enable CXL feature commands

fwctl provides a fwctl_ops->fw_rpc() callback in order to issue ioctls
to a device. The cxl fwctl driver will start by supportin

cxl: Add support for fwctl RPC command to enable CXL feature commands

fwctl provides a fwctl_ops->fw_rpc() callback in order to issue ioctls
to a device. The cxl fwctl driver will start by supporting the CXL
Feature commands: Get Supported Features, Get Feature, and Set Feature.

The fw_rpc() callback provides 'enum fwctl_rpc_scope' parameter where
it indicates the security scope of the call. The Get Supported Features
and Get Feature calls can be executed with the scope of
FWCTL_RPC_CONFIGRATION. The Set Feature call is gated by the effects
of the Feature reported by Get Supported Features call for the specific
Feature.

Only "Get Supported Features" is supported in this patch. Additional
commands will be added in follow on patches. "Get Supported Features"
will filter the Features that are exclusive to the kernel. The flag
field of the Feature details will be cleared of the "Changeable"
field and the "set feat size" will be set to 0 to indicate that
the feature is not changeable.

Link: https://patch.msgid.link/r/[email protected]
Reviewed-by: Dan Williams <[email protected]>
Reviewed-by: Jonathan Cameron <[email protected]>
Reviewed-by: Li Ming <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

show more ...

cxl: Move cxl feature command structs to user header

In preparation for cxl fwctl enabling, move data structures related to
cxl feature commands to a user header file.

Reviewed-by; Jonathan Cameron

cxl: Move cxl feature command structs to user header

In preparation for cxl fwctl enabling, move data structures related to
cxl feature commands to a user header file.

Reviewed-by; Jonathan Cameron <[email protected]>

Link: https://patch.msgid.link/r/[email protected]
Reviewed-by: Dan Williams <[email protected]>
Reviewed-by: Li Ming <[email protected]>
Signed-off-by: Dave Jiang <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

show more ...