[PATCH v4 0/4] PCI: dwc: Clean up iATU index mess

[Niklas Cassel <cassel@kernel.org>]

This series tries to clean up the iATU index mess, by treating
iATU indexing for outbound and inbound address translation in
a consistent way (increment the index after assignment, and only
if the function call succeeded).


Changes since v3:
-The ECAM config space accessors do not support cfg0_io_shared, thus if
 running in ECAM mode, and we are out of outbound iATUs, return an error
 instead of enabling the cfg0_io_shared feature.


Link to v3:
https://lore.kernel.org/linux-pci/20260123093208.593506-6-cassel@kernel.org/

Link to v2:
https://lore.kernel.org/linux-pci/20260122222914.523238-6-cassel@kernel.org/

Link to v1:
https://lore.kernel.org/linux-pci/20260122145411.453291-4-cassel@kernel.org/


Krishna Chaitanya Chundru (1):
  PCI: dwc: Fix missing iATU setup when ECAM is enabled

Niklas Cassel (3):
  PCI: dwc: Fix msg_atu_index assignment
  PCI: dwc: Improve msg_atu_index error handling
  PCI: dwc: Clean up iATU index usage in dw_pcie_iatu_setup()

 .../pci/controller/dwc/pcie-designware-host.c | 91 ++++++++++++-------
 drivers/pci/controller/dwc/pcie-designware.c  |  6 ++
 2 files changed, 62 insertions(+), 35 deletions(-)


base-commit: 0ecd890e3cf54a0586247b9a384702703277e4fd
-- 
2.52.0