linux-kernel - [PATCH 0/2] PCI: Add support for PCI Enhanced Allocation "BARs"

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Date:	Thu, 20 Aug 2015 09:59:05 -0700
From:	"Sean O. Stalley" <sean.stalley@...el.com>
To:	bhelgaas@...gle.com, rajatxjain@...il.com, mst@...hat.com,
	zajec5@...il.com, gong.chen@...ux.intel.com,
	linux-pci@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-api@...r.kernel.org
Cc:	sean.stalley@...el.com
Subject: [PATCH 0/2] PCI: Add support for PCI Enhanced Allocation "BARs"

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.

The Enhanced Allocation ECN is publicly available here:
https://www.pcisig.com/specifications/conventional/ECN_Enhanced_Allocation_23_Oct_2014_Final.pdf

Sean O. Stalley (2):
  PCI: Add Enhanced Allocation register entries
  PCI: Add parsing of Enhanced Allocation entries

 drivers/pci/pci.c             | 219 ++++++++++++++++++++++++++++++++++++++++++
 drivers/pci/pci.h             |   1 +
 drivers/pci/probe.c           |   3 +
 include/uapi/linux/pci_regs.h |  40 +++++++-
 4 files changed, 262 insertions(+), 1 deletion(-)

-- 
1.9.1

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