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[v3,0/5] PCI: qcom: Fix higher MSI vectors handling

Message ID 20220427121653.3158569-1-dmitry.baryshkov@linaro.org (mailing list archive)
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Series PCI: qcom: Fix higher MSI vectors handling | expand

Message

Dmitry Baryshkov April 27, 2022, 12:16 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 v2:
 - Fix and rephrase commit message for patch 2.

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    | 12 ++++-
 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, 69 insertions(+), 21 deletions(-)