PCI: Add device-specific ACS Redirect disable infrastructure

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Intel Sunrise Point (SPT) PCH hardware has an implementation of the ACS
bits that does not comply with the PCIe standard.  To deal with this we
need device-specific quirks to disable ACS redirection.

Add a new pci_dev_specific_disable_acs_redir() quirk and a new
.disable_acs_redir() function pointer for use by non-compliant devices.  No
functional change intended.

Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
[bhelgaas: split to separate patch, move
pci_dev_specific_disable_acs_redir() declarations to drivers/pci/pci.h]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>

...

This commit is contained in:

Logan Gunthorpe 2018-08-09 16:51:43 -05:00 • committed by Bjorn Helgaas

parent 3b269185c1

commit 73c47ddef2

3 changed files with 43 additions and 8 deletions

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3

drivers/pci/pci.c

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5

drivers/pci/pci.h

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43

drivers/pci/quirks.c

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