Signed-off-by: Sean O. Stalley <sean.stal...@intel.com>
I tested it out with the QEMU EA Patches here:
[https://lists.nongnu.org/archive/html/qemu-devel/2015-07/msg00348.html]
Also, I found 1 trivial typo in the commit message of PATCH 1/4:
"Signed-off-by: Signed-off-by: David Daney <david.da...@cavium.com>"
-Sean
On Wed, Oct 07, 2015 at 06:44:52AM -0700, Stalley, Sean wrote:
> [PATCH 3/4 & 4/4] Acked-by: Sean O. Stalley <sean.stal...@intel.com>
>
> I won't be able to test it out until next week, but I like how it looks :)
>
> Thanks Again,
> Sean
>
> > -----Original Message-----
> > From: David Daney [mailto:ddaney.c...@gmail.com]
> > Sent: Tuesday, October 06, 2015 4:51 PM
> > To: linux-ker...@vger.kernel.org; linux-...@vger.kernel.org; Bjorn Helgaas;
> > Michael S. Tsirkin; Rafał Miłecki; linux-api@vger.kernel.org; Stalley, Sean;
> > ying...@kernel.org; rajatxj...@gmail.com; gong.c...@linux.intel.com
> > Cc: David Daney
> > Subject: [PATCH v5 0/4] PCI: Add support for PCI Enhanced Allocation
> > "BARs"
> >
> > From: David Daney <david.da...@cavium.com>
> >
> > The original patches are from Sean O. Stalley. I made a few tweaks, but feel
> > that it is substancially Sean's work, so I am keeping the patch set version
> > numbering scheme going.
> >
> > Tested on Cavium ThunderX system with 4 Root Complexes containing 50
> > devices/bridges provisioned with EA.
> >
> > Here is Sean's description of the patches:
> >
> > PCI Enhanced Allocation is a new method of allocating MMIO & IO
> > resources for PCI devices & bridges. It can be used instead of the
> > traditional
> > PCI method of using BARs.
> >
> > EA entries are hardware-initialized to a fixed address.
> > Unlike BARs, regions described by EA are cannot be moved.
> > Because of this, only devices which are permanently connected to the PCI
> > bus can use EA. A removable PCI card must not use EA.
> >
> > This patchset adds support for using EA entries instead of BARs on Root
> > Complex Integrated Endpoints.
> >
> > The Enhanced Allocation ECN is publicly available here:
> > https://www.pcisig.com/specifications/conventional/ECN_Enhanced_Alloca
> > tion_23_Oct_2014_Final.pdf
> >
> >
> > Changes from V1:
> > - Use generic PCI resource claim functions (instead of EA-specific
> > functions)
> > - Only add support for RCiEPs (instead of all devices).
> > - Removed some debugging messages leftover from early testing.
> >
> > Changes from V2 (By David Daney):
> > - Add ea_cap to struct pci_device, to aid in finding the EA capability.
> > - Factored EA entity decoding into a separate function.
> > - Add functions to find EA entities by BEI or Property.
> > - Add handling of EA provisioned bridges.
> > - Add handling of EA SRIOV BARs.
> > - Try to assign proper resource parent so that SRIOV device creation
> > can occur.
> >
> > Changes from V3 (By David Daney):
> > - Discarded V3 changes and started over fresh based on Sean's V2.
> > - Add more support/checking for Entry Properties.
> > - Allow EA behind bridges.
> > - Rewrite some error messages.
> > - Add patch 3/5 to prevent resizing, and better handle
> > assigning, of fixed EA resources.
> > - Add patch 4/5 to handle EA provisioned SRIOV devices.
> > - Add patch 5/5 to handle EA provisioned bridges.
> >
> > Changes from V4 (By David Daney):
> > - Drop patch 5/5 to handle EA provisioned bridges.
> > - Drop cases for bridge resources in 2/5.
> > - Drop unnecessary fallback resource parent handling in 3/5
> > - Small code formatting improvements.
> >
> > David Daney (2):
> > PCI: Handle IORESOURCE_PCI_FIXED when sizing and assigning resources.
> > PCI: Handle Enhanced Allocation (EA) capability for SRIOV devices.
> >
> > Sean O. Stalley (2):
> > PCI: Add Enhanced Allocation register entries
> > PCI: Add support for Enhanced Allocation devices
> >
> > drivers/pci/iov.c | 11 ++-
> > drivers/pci/pci.c | 189
> > ++++++++++++++++++++++++++++++++++++++++++
> > drivers/pci/pci.h | 1 +
> > drivers/pci/probe.c | 3 +
> > drivers/pci/setup-bus.c | 50 ++++++++++-
> > include/uapi/linux/pci_regs.h | 44 +++++++++-
> > 6 files changed, 292 insertions(+), 6 deletions(-)
> >
> > --
> > 1.9.1
>
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