The msi_controller data structure was the first attempt at treating MSIs like any other interrupt. We replaced it a few years ago with the generic MSI framework, but as it turns out, some older drivers are still using it. This series aims at converting these stragglers, drop msi_controller, and fix some other nits such as having ways for a host bridge to advertise whether it supports MSIs or not. A few notes: - The Tegra patch is the result of back and forth work with Thierry: I wrote the initial patch, which didn't work (I didn't have any HW at the time). Thierry made it work, and I subsequently fixed a couple of bugs/cleanups. I'm responsible for the result, so don't blame Thierry for any of it! FWIW, I'm now running a Jetson TX2 with its root fs over NVME, and MSIs are OK. - RCAR is totally untested, though Marek had a go at a previous version. More testing required. - The xilinx stuff is *really* untested. Paul, if you have a RISC-V board that uses it, could you please give it a go? Michal, same thing for the stuff you have at hand... - hyperv: I don't have access to such hypervisor, and no way to test it. Help welcomed. - The patches dealing with the advertising of MSI handling are the result of a long discussion that took place here[1]. I took the liberty to rejig Thomas' initial patches, and add what I needed for the MSI domain stuff. Again, blame me if something is wrong, and not Thomas. Feedback welcome. M. [1] https://lore.kernel.org/r/20201031140330.83768-1-linux@xxxxxxxxx Marc Zyngier (11): PCI: tegra: Convert to MSI domains PCI: rcar: Convert to MSI domains PCI: xilinx: Convert to MSI domains PCI: hyperv: Drop msi_controller structure PCI: MSI: Drop use of msi_controller from core code PCI: MSI: Kill msi_controller structure PCI: MSI: Kill default_teardown_msi_irqs() PCI: MSI: Let PCI host bridges declare their reliance on MSI domains PCI: Make pci_host_common_probe() declare its reliance on MSI domains PCI: MSI: Document the various ways of ending up with NO_MSI PCI: quirks: Refactor advertising of the NO_MSI flag Thomas Gleixner (2): PCI: MSI: Let PCI host bridges declare their lack of MSI handling PCI: mediatek: Advertise lack of MSI handling drivers/pci/controller/Kconfig | 4 +- drivers/pci/controller/pci-host-common.c | 1 + drivers/pci/controller/pci-hyperv.c | 4 - drivers/pci/controller/pci-tegra.c | 343 ++++++++++++----------- drivers/pci/controller/pcie-mediatek.c | 4 + drivers/pci/controller/pcie-rcar-host.c | 342 +++++++++++----------- drivers/pci/controller/pcie-xilinx.c | 238 +++++++--------- drivers/pci/msi.c | 46 +-- drivers/pci/probe.c | 4 +- drivers/pci/quirks.c | 15 +- include/linux/msi.h | 17 +- include/linux/pci.h | 4 +- 12 files changed, 463 insertions(+), 559 deletions(-) -- 2.29.2
