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Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BA
From: |
Sean O. Stalley |
Subject: |
Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs" |
Date: |
Mon, 11 May 2015 13:08:05 -0700 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
On Mon, May 11, 2015 at 09:26:08PM +0200, Michael S. Tsirkin wrote:
> On Mon, May 11, 2015 at 11:56:44AM -0700, Sean O. Stalley wrote:
> > 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 perminately connected to
> > the PCI bus can use EA. A removeable PCI card must not use EA.
> >
> > This patchset enables any existing QEMU PCI model to use EA in leiu of
> > BARs. It adds EA options to the PCI device paramaters.
> >
> > The Enhanced Allocation ECN is publicly available here:
> > https://www.pcisig.com/specifications/conventional/ECN_Enhanced_Allocation_23_Oct_2014_Final.pdf
> >
> > Signed-off-by: Sean O. Stalley <address@hidden>
>
>
> I will review this, thanks. Will you also be sending a seabios patch to
> support these registers? When you do, please Cc me.
Thanks Michael,
I wasn't planning on sending a seabios patch.
I do have some EDKII/OVMF patches I hope to send out soon. I will Cc you on
those.
-Sean
>
>
> > ---
> > hw/pci/Makefile.objs | 2 +-
> > hw/pci/pci.c | 96 ++++++++++++++++------
> > hw/pci/pci_ea.c | 203
> > ++++++++++++++++++++++++++++++++++++++++++++++
> > include/hw/pci/pci.h | 7 ++
> > include/hw/pci/pci_ea.h | 39 +++++++++
> > include/hw/pci/pci_regs.h | 4 +
> > include/qemu/typedefs.h | 1 +
> > 7 files changed, 328 insertions(+), 24 deletions(-)
> > create mode 100644 hw/pci/pci_ea.c
> > create mode 100644 include/hw/pci/pci_ea.h
- [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Sean O. Stalley, 2015/05/11
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Michael S. Tsirkin, 2015/05/11
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs",
Sean O. Stalley <=
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Michael S. Tsirkin, 2015/05/12
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Sean O. Stalley, 2015/05/12
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Michael S. Tsirkin, 2015/05/13
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Sean O. Stalley, 2015/05/13
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Michael S. Tsirkin, 2015/05/14
- Re: [Qemu-devel] [PATCH 1/1] Add support for PCI Enhanced Allocation "BARs", Michael S. Tsirkin, 2015/05/31