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* [PATCH 00/13] PCI: MSI: Getting rid of msi_controller, and other cleanups
@ 2021-02-25 15:10 Marc Zyngier
  2021-02-25 15:10 ` [PATCH 01/13] PCI: tegra: Convert to MSI domains Marc Zyngier
                   ` (13 more replies)
  0 siblings, 14 replies; 29+ messages in thread
From: Marc Zyngier @ 2021-02-25 15:10 UTC (permalink / raw)
  To: Lorenzo Pieralisi, Bjorn Helgaas
  Cc: linux-hyperv, linux-pci, Thierry Reding, K. Y. Srinivasan,
	Will Deacon, Marek Vasut, Rob Herring, Wei Liu, Ryder Lee,
	Stephen Hemminger, Michal Simek, Jonathan Hunter, Thierry Reding,
	Frank Wunderlich, Haiyang Zhang, linux-mediatek, Paul Walmsley,
	linux-tegra, Thomas Gleixner, linux-arm-kernel,
	Yoshihiro Shimoda, linux-kernel, linux-renesas-soc

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@fw-web.de

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


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^ permalink raw reply	[flat|nested] 29+ messages in thread

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Thread overview: 29+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-02-25 15:10 [PATCH 00/13] PCI: MSI: Getting rid of msi_controller, and other cleanups Marc Zyngier
2021-02-25 15:10 ` [PATCH 01/13] PCI: tegra: Convert to MSI domains Marc Zyngier
2021-02-25 15:10 ` [PATCH 02/13] PCI: rcar: " Marc Zyngier
2021-02-28 18:48   ` Marek Vasut
2021-02-25 15:10 ` [PATCH 03/13] PCI: xilinx: " Marc Zyngier
2021-03-22 12:21   ` Lorenzo Pieralisi
2021-03-22 12:33     ` Michal Simek
2021-03-22 14:04       ` Marc Zyngier
2021-03-22 12:23   ` Lorenzo Pieralisi
2021-03-22 12:33     ` Michal Simek
2021-03-22 14:04     ` Marc Zyngier
2021-02-25 15:10 ` [PATCH 04/13] PCI: hyperv: Drop msi_controller structure Marc Zyngier
2021-03-01  4:24   ` Michael Kelley
2021-02-25 15:10 ` [PATCH 05/13] PCI: MSI: Drop use of msi_controller from core code Marc Zyngier
2021-02-25 15:10 ` [PATCH 06/13] PCI: MSI: Kill msi_controller structure Marc Zyngier
2021-02-25 15:10 ` [PATCH 07/13] PCI: MSI: Kill default_teardown_msi_irqs() Marc Zyngier
2021-02-25 15:10 ` [PATCH 08/13] PCI: MSI: Let PCI host bridges declare their lack of MSI handling Marc Zyngier
2021-02-25 15:10 ` [PATCH 09/13] PCI: mediatek: Advertise " Marc Zyngier
2021-03-01 10:43   ` Aw: " Frank Wunderlich
2021-03-01 11:49     ` Marc Zyngier
2021-03-01 12:16       ` Aw: " Frank Wunderlich
2021-03-01 13:31         ` Marc Zyngier
2021-03-01 14:06           ` Aw: " Frank Wunderlich
2021-03-02 10:35             ` Robin Murphy
2021-02-25 15:10 ` [PATCH 10/13] PCI: MSI: Let PCI host bridges declare their reliance on MSI domains Marc Zyngier
2021-02-25 15:10 ` [PATCH 11/13] PCI: Make pci_host_common_probe() declare its " Marc Zyngier
2021-02-25 15:10 ` [PATCH 12/13] PCI: MSI: Document the various ways of ending up with NO_MSI Marc Zyngier
2021-02-25 15:10 ` [PATCH 13/13] PCI: quirks: Refactor advertising of the NO_MSI flag Marc Zyngier
2021-03-10 19:29 ` [PATCH 00/13] PCI: MSI: Getting rid of msi_controller, and other cleanups Bjorn Helgaas

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