Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]


Groups > linux.kernel > #1231783

Re: [PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation "BARs"

From Yinghai Lu <yinghai@kernel.org>
Newsgroups linux.kernel
Subject Re: [PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation "BARs"
Date 2015-09-24 01:30 +0200
Message-ID <qc1E6-2fq-9@gated-at.bofh.it> (permalink)
References <qc0RH-14h-3@gated-at.bofh.it>
Organization linux.* mail to news gateway

Show all headers | View raw


On Wed, Sep 23, 2015 at 3:27 PM, Sean O. Stalley <sean.stalley@intel.com> 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 permanently connected to
> the PCI bus can use EA. A removable PCI card must not use EA.

As it is fixed, can you put IORESOURCE_PCI_FIXED in the res->flags?

Thanks

Yinghai
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Back to linux.kernel | Previous | NextPrevious in thread | Next in thread | Find similar | Unroll thread


Thread

[PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation "BARs" "Sean O. Stalley" <sean.stalley@intel.com> - 2015-09-24 00:40 +0200
  Re: [PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation "BARs" Yinghai Lu <yinghai@kernel.org> - 2015-09-24 01:30 +0200
    Re: [PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation  "BARs" "Sean O. Stalley" <sean.stalley@intel.com> - 2015-09-24 02:00 +0200
      Re: [PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation "BARs" Yinghai Lu <yinghai@kernel.org> - 2015-09-24 02:30 +0200
  Re: [PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation "BARs" David Daney <ddaney.cavm@gmail.com> - 2015-09-24 02:40 +0200
    Re: [PATCH v2 0/2] PCI: Add support for PCI Enhanced Allocation  "BARs" "Sean O. Stalley" <sean.stalley@intel.com> - 2015-09-24 18:50 +0200

csiph-web