[V2,00/36] genirq/msi, PCI/MSI: Spring cleaning - Part 2

Message

Thomas Gleixner Dec. 6, 2021, 10:38 p.m. UTC

This is the second part of [PCI]MSI refactoring which aims to provide the
ability of expanding MSI-X vectors after enabling MSI-X.

The first part of this work can be found here:

    https://lore.kernel.org/r/[e-mail]

This second part has the following important changes:

   1) Cleanup of the MSI related data in struct device

      struct device contains at the moment various MSI related parts. Some
      of them (the irq domain pointer) cannot be moved out, but the rest
      can be allocated on first use. This is in preparation of adding more
      per device MSI data later on.

   2) Consolidation of sysfs handling

      As a first step this moves the sysfs pointer from struct msi_desc
      into the new per device MSI data structure where it belongs.

      Later changes will cleanup this code further, but that's not possible
      at this point.

   3) Store per device properties in the per device MSI data to avoid
      looking up MSI descriptors and analysing their data. Cleanup all
      related use cases.

   4) Provide a function to retrieve the Linux interrupt number for a given
      MSI index similar to pci_irq_vector() and cleanup all open coded
      variants.

This second series is based on:

     git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git msi-v2-part-1

and also available from git:

     git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git msi-v2-part-2

For the curious who can't wait for the next part to arrive the full series
is available via:

     git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git msi-v2-part-3

V1 of this series can be found here:

    https://lore.kernel.org/r/[e-mail]

Changes versus V1:

  - Fix the pci_irq_vector() thinko - Marc

  - Fix the powerpc fallout - Cedric, Andy

  - Addressed codingstyle/comments feedback - Jonathan

  - Added a MSI properties setter to prepare for later changes

  - Confined the global msi*sysfs functions to legacy code

  - Dropped the MSI lock patch as the lock has moved to struct pci_dev
    in V2 part-1 now

  - Picked up Reviewed/Tested/Acked-by tags as appropriate

Thanks,

	tglx
---
 arch/powerpc/platforms/cell/axon_msi.c              |    6 
 arch/powerpc/platforms/pseries/msi.c                |   39 +---
 arch/x86/kernel/apic/msi.c                          |    5 
 arch/x86/pci/xen.c                                  |    8 
 drivers/base/platform-msi.c                         |  152 +++++++---------
 drivers/bus/fsl-mc/dprc-driver.c                    |    8 
 drivers/bus/fsl-mc/fsl-mc-allocator.c               |    9 
 drivers/bus/fsl-mc/fsl-mc-msi.c                     |   26 +-
 drivers/dma/mv_xor_v2.c                             |   16 -
 drivers/dma/qcom/hidma.c                            |   44 ++--
 drivers/dma/ti/k3-udma-private.c                    |    6 
 drivers/dma/ti/k3-udma.c                            |   14 -
 drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c         |   23 --
 drivers/irqchip/irq-mbigen.c                        |    4 
 drivers/irqchip/irq-mvebu-icu.c                     |   12 -
 drivers/irqchip/irq-ti-sci-inta.c                   |    2 
 drivers/mailbox/bcm-flexrm-mailbox.c                |    9 
 drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c    |    4 
 drivers/net/ethernet/freescale/dpaa2/dpaa2-ptp.c    |    4 
 drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c |    5 
 drivers/pci/msi/irqdomain.c                         |   20 +-
 drivers/pci/msi/legacy.c                            |    6 
 drivers/pci/msi/msi.c                               |  118 ++++--------
 drivers/pci/xen-pcifront.c                          |    2 
 drivers/perf/arm_smmuv3_pmu.c                       |    5 
 drivers/soc/fsl/dpio/dpio-driver.c                  |    8 
 drivers/soc/ti/k3-ringacc.c                         |    6 
 drivers/soc/ti/ti_sci_inta_msi.c                    |   22 --
 drivers/vfio/fsl-mc/vfio_fsl_mc_intr.c              |    4 
 include/linux/device.h                              |   25 ++
 include/linux/fsl/mc.h                              |    4 
 include/linux/msi.h                                 |  112 ++++++------
 include/linux/pci.h                                 |    1 
 include/linux/soc/ti/ti_sci_inta_msi.h              |    1 
 kernel/irq/msi.c                                    |  182 +++++++++++++++-----
 35 files changed, 464 insertions(+), 448 deletions(-)