From: "Sean O. Stalley" <sean.stalley@intel.com>
To: bhelgaas@google.com, rajatxjain@gmail.com, mst@redhat.com,
zajec5@gmail.com, gong.chen@linux.intel.com,
linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-api@vger.kernel.org
Cc: sean.stalley@intel.com
Subject: [PATCH 0/2] PCI: Add support for PCI Enhanced Allocation "BARs"
Date: Thu, 20 Aug 2015 09:59:05 -0700 [thread overview]
Message-ID: <1440089947-2839-1-git-send-email-sean.stalley@intel.com> (raw)
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
next reply other threads:[~2015-08-20 16:59 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-20 16:59 Sean O. Stalley [this message]
2015-08-20 16:59 ` [PATCH 1/2] PCI: Add Enhanced Allocation register entries Sean O. Stalley
2015-08-20 16:59 ` [PATCH 2/2] PCI: Add support for Enhanced Allocation devices Sean O. Stalley
2015-09-01 23:14 ` Yinghai Lu
2015-09-02 17:46 ` Sean O. Stalley
2015-09-02 19:25 ` Bjorn Helgaas
2015-09-02 20:01 ` Sean O. Stalley
2015-09-02 21:21 ` Bjorn Helgaas
2015-09-03 0:29 ` Sean O. Stalley
2015-09-03 14:46 ` Bjorn Helgaas
2015-09-03 18:23 ` Sean O. Stalley
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