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linux/drivers/cdx/controller/mcdi_functions.c

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cdx: add cdx controller CDX controller uses MCDI interface as a protocol to communicate with the RPU firmware and registers the detected CDX devices on the CDX bus. It also uses RPMsg as the communication channel with the Firmware. Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Puneet Gupta <puneet.gupta@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Nikhil Agarwal <nikhil.agarwal@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/20230313132636.31850-6-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:34 +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
cdx: add cdx controller CDX controller uses MCDI interface as a protocol to communicate with the RPU firmware and registers the detected CDX devices on the CDX bus. It also uses RPMsg as the communication channel with the Firmware. Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Puneet Gupta <puneet.gupta@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Nikhil Agarwal <nikhil.agarwal@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/20230313132636.31850-6-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:34 +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
cdx: add cdx controller CDX controller uses MCDI interface as a protocol to communicate with the RPU firmware and registers the detected CDX devices on the CDX bus. It also uses RPMsg as the communication channel with the Firmware. Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Puneet Gupta <puneet.gupta@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Nikhil Agarwal <nikhil.agarwal@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/20230313132636.31850-6-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:34 +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
cdx: add cdx controller CDX controller uses MCDI interface as a protocol to communicate with the RPU firmware and registers the detected CDX devices on the CDX bus. It also uses RPMsg as the communication channel with the Firmware. Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Puneet Gupta <puneet.gupta@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Nikhil Agarwal <nikhil.agarwal@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/20230313132636.31850-6-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:34 +05:30
cdx: add sysfs for subsystem, class and revision CDX controller provides subsystem vendor, subsystem device, class and revision info of the device along with vendor and device ID in native endian format. CDX Bus system uses this information to bind the cdx device to the cdx device driver. Co-developed-by: Puneet Gupta <puneet.gupta@amd.com> Signed-off-by: Puneet Gupta <puneet.gupta@amd.com> Co-developed-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@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/20231017160505.10640-8-abhijit.gangurde@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-17 21:35:05 +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
cdx: add cdx controller CDX controller uses MCDI interface as a protocol to communicate with the RPU firmware and registers the detected CDX devices on the CDX bus. It also uses RPMsg as the communication channel with the Firmware. Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Puneet Gupta <puneet.gupta@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Signed-off-by: Nikhil Agarwal <nikhil.agarwal@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/20230313132636.31850-6-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:34 +05:30
cdx: add device attributes Create sysfs entry for CDX devices. Sysfs entries provided in each of the CDX device detected by the CDX controller - vendor id - device id - remove - reset of the device. - driver override 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/20230313132636.31850-8-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:36 +05:30
cdx: add support for bus enable and disable CDX bus needs to be disabled before updating/writing devices in the FPGA. Once the devices are written, the bus shall be rescanned. This change provides sysfs entry to enable/disable the CDX bus. Co-developed-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Signed-off-by: Abhijit Gangurde <abhijit.gangurde@amd.com> Link: https://lore.kernel.org/r/20231017160505.10640-6-abhijit.gangurde@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-10-17 21:35:03 +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
cdx: add device attributes Create sysfs entry for CDX devices. Sysfs entries provided in each of the CDX device detected by the CDX controller - vendor id - device id - remove - reset of the device. - driver override 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/20230313132636.31850-8-nipun.gupta@amd.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-03-13 18:56:36 +05:30
cdx: add support for bus mastering Introduce cdx_set_master() and cdx_clear_master() APIs to support enable and disable of bus mastering. Drivers need to use these APIs to enable/disable DMAs from the CDX devices. Signed-off-by: Nipun Gupta <nipun.gupta@amd.com> Reviewed-by: Pieter Jansen van Vuuren <pieter.jansen-van-vuuren@amd.com> Link: https://lore.kernel.org/r/20230915045423.31630-1-nipun.gupta@amd.com Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2023-09-15 10:24:21 +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