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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(-)

WARNING: multiple messages have this Message-ID (diff)
From: Alex Williamson <alex.williamson-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
To: linux-pci-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Cc: bhelgaas-hpIqsD4AKlfQT0dZR+AlfA@public.gmane.org,
	iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org,
	linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.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(-)

             reply	other threads:[~2016-10-26 18:01 UTC|newest]

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-26 18:01 Alex Williamson [this message]
2016-10-26 18:01 ` [PATCH 0/5] PCI: ACS enable quirk for link balancing switches Alex Williamson
2016-10-26 18:01 ` [PATCH 1/5] PCI: Make pci_std_enable_acs() non-static Alex Williamson
2016-10-26 18:01   ` 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
2016-10-26 18:01   ` 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 18:01   ` 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
2016-10-26 18:01   ` Alex Williamson
2016-11-10 12:27   ` Joerg Roedel
2016-11-10 12:27     ` Joerg Roedel
2016-11-11 22:57     ` Bjorn Helgaas
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
2016-10-26 18:01   ` Alex Williamson
2016-11-14 21:03   ` Bjorn Helgaas
2016-11-14 21:21     ` Alex Williamson
2016-11-14 21:21       ` Alex Williamson

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