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[v1,0/2] PCI: dwc: Add support for 64-bit MSI target addresses

Message ID 20220809180051.1063653-1-willmcvicker@google.com
Headers show
Series PCI: dwc: Add support for 64-bit MSI target addresses | expand

Message

William McVicker Aug. 9, 2022, 6 p.m. UTC 
Hi,

I have two patches that address a couple of issues I've run into with the
PCIe DWC host driver:
  (1) the host driver fails to probe when ZONE_DMA32 is disabled.
  (2) the host driver will fail to probe if a 32-bit address is not
      available even on devices that support 64-bit target addresses.

I have addressed both of these issues with the two patches (details can
found in each of the patch commit messages). Please take a look and let
me know your thoughts.

With regards to testing, I have verified them on Android with a Pixel 6
device on the 5.19 + pci-v5.20-changes kernel. My testing included running
with both ZONE_DMA32 and swiotlb disabled.

Thanks,
Will

Will McVicker (2):
  PCI: dwc: drop dependency on ZONE_DMA32
  PCI: dwc: add support for 64-bit MSI target address

 .../pci/controller/dwc/pcie-designware-host.c | 42 ++++++++++++-------
 drivers/pci/controller/dwc/pcie-designware.c  |  9 ++++
 drivers/pci/controller/dwc/pcie-designware.h  |  6 +++
 3 files changed, 41 insertions(+), 16 deletions(-)