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Type3 relies on mailbox CXL_MBOX_OP_IDENTIFY command for initializing memdev state params which end up being used for DPA initialization. Allow a Type2 driver to initialize DPA simply by giving the size of its volatile hardware partition. Move related functions to memdev. Signed-off-by: Alejandro Lucero <alucerop@amd.com> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Reviewed-by: Dave Jiang <dave.jiang@intel.com> Reviewed-by: Ben Cheatham <benjamin.cheatham@amd.com> Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com> Acked-by: Edward Cree <ecree.xilinx@gmail.com> Link: https://patch.msgid.link/20260629183727.51502-3-alejandro.lucero-palau@amd.com Signed-off-by: Dave Jiang <dave.jiang@intel.com>