kernel/drivers/cdx/controller/mcdi.h, branch linux-rolling-stable

cdx: Split mcdi.h and reorganize headers

2025-09-15T13:56:00Z

Move bitfield.h from the CDX controller directory to include/linux/cdx to make them accessible to other drivers. As part of this refactoring, split mcdi.h into two headers: - mcdi.h: retains interface-level declarations - mcdid.h: contains internal definitions and macros This is in preparation for VersalNET EDAC driver that relies on it. Signed-off-by: Shubhrajyoti Datta Signed-off-by: Borislav Petkov (AMD) Acked-by: Nikhil Agarwal Link: https://lore.kernel.org/20250908115649.22903-1-shubhrajyoti.datta@amd.com

cdx: Replace custom mcdi logging with print_hex_dump_debug()

2023-06-15T11:42:16Z

Replace custom mcdi logging for send and receive requests with dynamic debug method print_hex_dump_debug(). Signed-off-by: Abhijit Gangurde Message-ID: <20230613084318.27996-1-abhijit.gangurde@amd.com> Signed-off-by: Greg Kroah-Hartman

cdx: add rpmsg communication channel for CDX

2023-03-29T10:26:32Z

RPMsg is used as a transport communication channel. This change introduces RPMsg driver and integrates it with the CDX controller. Signed-off-by: Abhijit Gangurde Signed-off-by: Nipun Gupta Reviewed-by: Pieter Jansen van Vuuren Tested-by: Nikhil Agarwal Link: https://lore.kernel.org/r/20230313132636.31850-7-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman

cdx: add MCDI protocol interface for firmware interaction

2023-03-29T10:26:32Z

The MCDI (Management CPU Driver Interface) is used as a protocol to communicate with the RPU firmware. It has pre-defined set of messages for different message exchanges between APU and RPU. Signed-off-by: Puneet Gupta Signed-off-by: Nipun Gupta Signed-off-by: Tarak Reddy Reviewed-by: Pieter Jansen van Vuuren Tested-by: Nikhil Agarwal Link: https://lore.kernel.org/r/20230313132636.31850-5-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman