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[v2,0/5] PCI: qcom: Fix higher MSI vectors handling

Message ID 20220423133939.2123449-1-dmitry.baryshkov@linaro.org
Headers show
Series PCI: qcom: Fix higher MSI vectors handling | expand

Message

Dmitry Baryshkov April 23, 2022, 1:39 p.m. UTC 
I have replied with my Tested-by to the patch at [2], which has landed
in the linux-next as the commit 8ae0117418f3 ("PCI: qcom:
Add support for handling MSIs from 8 endpoints"). However lately I
noticed that during the tests I still had 'pcie_pme=nomsi', so the
device was not forced to use higher MSI vectors.

After removing this option I noticed that hight MSI vectors are not
delivered on tested platforms. After additional research I stumbled upon
a patch in msm-4.14 ([1]), which describes that each group of MSI
vectors is mapped to the separate interrupt. Implement corresponding
mapping.

Patchseries dependecies: [2] (landed in pci-next) and [3] (for the
schema change).

Changes since v1:
 - Split a huge patch into three patches as suggested by Bjorn Helgaas
 - snps,dw-pcie removal is now part of [3]

[1] https://git.codelinaro.org/clo/la/kernel/msm-4.14/-/commit/671a3d5f129f4bfe477152292ada2194c8440d22
[2] https://lore.kernel.org/linux-arm-msm/20211214101319.25258-1-manivannan.sadhasivam@linaro.org/
[3] https://lore.kernel.org/linux-arm-msm/20220422211002.2012070-1-dmitry.baryshkov@linaro.org/


Dmitry Baryshkov (5):
  PCI: dwc: Convert msi_irq to the array
  PCI: dwc: Teach dwc core to parse additional MSI interrupts
  PCI: qcom: Handle MSI IRQs properly
  dt-bindings: pci/qcom,pcie: support additional MSI interrupts
  arm64: dts: qcom: sm8250: provide additional MSI interrupts

 .../devicetree/bindings/pci/qcom,pcie.yaml    | 14 ++++-
 arch/arm64/boot/dts/qcom/sm8250.dtsi          | 11 +++-
 drivers/pci/controller/dwc/pci-dra7xx.c       |  2 +-
 drivers/pci/controller/dwc/pci-exynos.c       |  2 +-
 .../pci/controller/dwc/pcie-designware-host.c | 53 ++++++++++++++-----
 drivers/pci/controller/dwc/pcie-designware.h  |  3 +-
 drivers/pci/controller/dwc/pcie-keembay.c     |  2 +-
 drivers/pci/controller/dwc/pcie-qcom.c        |  1 +
 drivers/pci/controller/dwc/pcie-spear13xx.c   |  2 +-
 drivers/pci/controller/dwc/pcie-tegra194.c    |  2 +-
 10 files changed, 70 insertions(+), 22 deletions(-)


base-commit: ce522ba9ef7e2d9fb22a39eb3371c0c64e2a433e
prerequisite-patch-id: bfbbebbfd7a7f7acf46ddfa99da1cb259fbcf9e6
prerequisite-patch-id: dc9fc1a533b2ee58336b6af58546ec4ce4dc69d1
prerequisite-patch-id: d02abf52f065fee631769ed3362b5cba30c9b71e
prerequisite-patch-id: ade72962f2915faef888a605b322fbfb063009d7
prerequisite-patch-id: e7c1182f9dd63f4dec7f76b08f74b1b3152bf49d
prerequisite-patch-id: fe65300b2a281a148e079e4d8cecb6018475abd6
prerequisite-patch-id: 509ce8b6c53bc9426b6ffaaa63a4a64b221a8b18
prerequisite-patch-id: f459fbbb2cfb317b8c85701eefd8f7c9e1a55b34