PCI: Add ACS quirk for Amazon Annapurna Labs root ports
authorAli Saidi <alisaidi@amazon.com>
Thu, 12 Sep 2019 13:00:40 +0000 (16:00 +0300)
committerLorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Mon, 16 Sep 2019 13:10:04 +0000 (14:10 +0100)
commit76e67e9e0f0f2debf9df192502a759bdd0cb4dab
treeaaa717e752e5e8073187a95f17ce1ac24b418a21
parent4a36a60c34f42f75e8b4f8cd24fcfade26111334
PCI: Add ACS quirk for Amazon Annapurna Labs root ports

The Amazon's Annapurna Labs root ports don't advertise an ACS
capability, but they don't allow peer-to-peer transactions and do
validate bus numbers through the SMMU. Additionally, it's not possible
for one RP to pass traffic to another RP.

Signed-off-by: Ali Saidi <alisaidi@amazon.com>
Signed-off-by: Jonathan Chocron <jonnyc@amazon.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com>
Reviewed-by: Andrew Murray <andrew.murray@arm.com>
Acked-by: Bjorn Helgaas <bhelgaas@google.com>
drivers/pci/quirks.c