From: Alex Williamson <alex.williamson@redhat.com>
To: linux-pci@vger.kernel.org
Cc: bhelgaas@google.com, iommu@lists.linux-foundation.org,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/5] PCI: ACS enable quirk for link balancing switches
Date: Wed, 26 Oct 2016 12:01:11 -0600 [thread overview]
Message-ID: <20161026175156.23495.12980.stgit@gimli.home> (raw)
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(-)
next reply other threads:[~2016-10-26 18:01 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-26 18:01 Alex Williamson [this message]
2016-10-26 18:01 ` [PATCH 1/5] PCI: Make pci_std_enable_acs() non-static Alex Williamson
2016-11-14 20:59 ` Bjorn Helgaas
2016-10-26 18:01 ` [PATCH 2/5] PCI: Extract link speed & width retrieval from pcie_get_minimum_link() Alex Williamson
2016-11-14 21:02 ` Bjorn Helgaas
2016-10-26 18:01 ` [PATCH 3/5] PCI: Extract link retraining from pcie_aspm_configure_common_clock() Alex Williamson
2016-10-26 20:42 ` Alex Williamson
2016-10-26 18:01 ` [PATCH 4/5] iommu: Move REQ_ACS_FLAGS out to header and rename Alex Williamson
2016-11-10 12:27 ` Joerg Roedel
2016-11-11 22:57 ` Bjorn Helgaas
2016-11-14 12:48 ` Joerg Roedel
2016-10-26 18:01 ` [PATCH 5/5] PCI: Balance ports to avoid ACS errata on Pericom switches Alex Williamson
2016-11-14 21:03 ` Bjorn Helgaas
2016-11-14 21:21 ` Alex Williamson
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