x86 does not use CONFIG_GENERIC_MSI_IRQ, and trying to enable it anyway
results in a build failure:
In file included from include/linux/ssb/ssb.h:10,
from drivers/ssb/pcihost_wrapper.c:18:
include/linux/gpio/driver.h:41:33: error: field 'msiinfo' has incomplete type
41 | msi_alloc_info_t msiinfo;
| ^~~~~~~
In file included from include/linux/kvm_host.h:19,
from arch/x86/events/intel/core.c:17:
include/linux/msi.h:528:33: error: field 'alloc_info' has incomplete type
528 | msi_alloc_info_t alloc_info;
Change the driver to actually build without this symbol and remove the
incorrect 'select' statements.
Fixes: e8b18c1173 ("cdx: Fix missing GENERIC_MSI_IRQ on compile test")
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Nikhil Agarwal <nikhil.agarwal@amd.com>
Signed-off-by: Arnd Bergmann <arnd@kernel.org>
Signed-off-by: Nipun Gupta <nipun.gupta@amd.com>
Link: https://lore.kernel.org/r/20250826043852.2206008-1-nipun.gupta@amd.com
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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>
