This website requires JavaScript.
About
Status
₊˚⊹Discord
Explore
Register
Sign in
Reference in a new issue
Blame
Copy permalink
Reference in a new issue
Copy permalink
kernel
/
linux
Star
0
Fork
You've already forked linux
0
mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/
synced
2026-10-28 20:03:05 +00:00
Code
Issues
Releases
Packages
Activity
680302d191
linux
/
drivers
/
cdx
/
Makefile
14 lines
280 B
Raw
Normal View
History
cdx: add the cdx bus driver Introduce AMD CDX bus, which provides a mechanism for scanning and probing CDX devices. These devices are memory mapped on system bus for Application Processors(APUs). CDX devices can be changed dynamically in the Fabric and CDX bus interacts with CDX controller to rescan the bus and rediscover the devices. Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/r/20230313132636.31850-2-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:30 +05:30
cdx: Create symbol namespaces for cdx subsystem Create CDX_BUS and CDX_BUS_CONTROLLER symbol namespace for cdx bus subsystem. CDX controller modules are required to import symbols from CDX_BUS_CONTROLLER namespace and other than controller modules to import from CDX_BUS namespace. Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Link: https://lore.kernel.org/r/20231017160505.10640-4-abhijit.gangurde@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-17 21:35:01 +05:30
cdx: add MCDI protocol interface for firmware interaction 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 <puneet.gupta@amd.com> Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Tarak Reddy <tarak.reddy@amd.com> Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/r/20230313132636.31850-5-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:33 +05:30
cdx: add MSI support for CDX bus 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 <nikhil.agarwal@amd.com> Signed-off-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Co-developed-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Reviewed-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Nikhil Agarwal <nikhil.agarwal@amd.com> Link: https://lore.kernel.org/r/20240226082816.100872-1-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-02-26 13:58:16 +05:30
