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Nipun Gupta
0e439ba38e
Add CDX-MSI domain per CDX controller with gic-its domain as a parent, to support MSI for CDX devices. CDX devices allocate MSIs from the CDX domain. Also, introduce APIs to alloc and free IRQs for CDX domain. In CDX subsystem firmware is a controller for all devices and their configuration. CDX bus controller sends all the write_msi_msg commands to firmware running on RPU and the firmware interfaces with actual devices to pass this information to devices Since, CDX controller is the only way to communicate with the Firmware for MSI write info, CDX domain per controller required in contrast to having a CDX domain per device. Co-developed-by: Nikhil Agarwal <[email protected]> Signed-off-by: Nikhil Agarwal <[email protected]> Co-developed-by: Abhijit Gangurde <[email protected]> Signed-off-by: Abhijit Gangurde <[email protected]> Signed-off-by: Nipun Gupta <[email protected]> Reviewed-by: Pieter Jansen van Vuuren <[email protected]> Reviewed-by: Thomas Gleixner <[email protected]> Tested-by: Nikhil Agarwal <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Greg Kroah-Hartman <[email protected]>