kernel/linux.git/include/linux/pci-ep-msi.h, branch linux-7.0.yLinux kernel stable tree (mirror)https://git.radix-linux.su/kernel/linux.git/atom?h=linux-7.0.y2025-07-24T21:51:17+00:00PCI: endpoint: Add RC-to-EP doorbell support using platform MSI controller2025-07-24T21:51:17+00:00Frank LiFrank.Li@nxp.com2025-07-10T19:13:49+00:00urn:sha1:1c3b002c6bf684b445a7107609979bca5f21bc03
Implement the doorbell feature by mapping the EP's MSI interrupt controller
message address to a dedicated BAR.
The EPF driver should pass the actual message data to be written to the
message address by the host through implementation-specific logic.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
[mani: minor code cleanups and reworded commit message]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
[bhelgaas: fix kernel-doc]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Tested-by: Niklas Cassel <cassel@kernel.org>
Link: https://patch.msgid.link/20250710-ep-msi-v21-3-57683fc7fb25@nxp.com