A series exposing and extracting bits of things that the kernel
already does, culminating in an ACS enabling quirk to work around an
errata where data through a Pericom PCIe switch gets stuck when the
upstream and downstream ports are running at different link speeds and
P2P Request Redirection is enabled.
If you have a Syba SD-PEX24033 or card making use of this PCIe switch
in a similar way, and find that it doesn't work right when installed
into a 5.0GT/s+ slot and the IOMMU is enabled, you want this series.
Thanks,
Alex
---
Alex Williamson (5):
PCI: Make pci_std_enable_acs() non-static
PCI: Extract link speed & width retrieval from pcie_get_minimum_link()
PCI: Extract link retraining from pcie_aspm_configure_common_clock()
iommu: Move REQ_ACS_FLAGS out to header and rename
PCI: Balance ports to avoid ACS errata on Pericom switches
drivers/iommu/iommu.c | 18 ++----
drivers/pci/pci.c | 57 ++++++++++++++++--
drivers/pci/pcie/aspm.c | 17 -----
drivers/pci/quirks.c | 147 +++++++++++++++++++++++++++++++++++++++++++++++
include/linux/iommu.h | 11 ++++
include/linux/pci.h | 4 +
6 files changed, 218 insertions(+), 36 deletions(-)
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