Add John-Mark Gurney <jmg@funkthat.com>'s report on PCIe hot-plug.
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The &os; Foundation
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</sponsor>
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</project>
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<project cat='misc'>
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<title>BSDCan 2015</title>
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<contact>
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<person>
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<name>
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<given>Dan</given>
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<common>Langille</common>
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</name>
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<email>dvl@FreeBSD.org</email>
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</person>
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</contact>
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<links>
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<url href="http://www.bsdcan.org/2015/" />
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<url href="https://www.youtube.com/playlist?list=PLWW0CjV-TafY0NqFDvD4k31CtnX-CGn8f" />
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</links>
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<body>
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<p>BSDCan, a conference for people working on and with
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4.4BSD-based operating systems and related projects, was held
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in Ottawa, Ontario on June 12 and 13. A two-day &os;
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developer summit event preceded it on June 10 and 11.</p>
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<p>This was the largest BSDCan ever, with over 280 attendees, up
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by more than 40 people over the 2014 event. There were a
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record number of speakers and talks. An additional room and
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"track" was added to provide even more choices for concurrent
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talks on both days of the conference. Social media response
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to the whole conference has been very positive.</p>
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<p>The keynote talk by Stephen Bourne was very popular. So
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popular, in fact, that the main conference room could not hold
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all the attendees. An overflow room with live video was set
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up to hold the extra people. The
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<a href="https://www.youtube.com/watch?v=2kEJoWfobpA">video</a>
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of the presentation has had over 6300 views in the first
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twelve days.</p>
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<p>Andrew Tanenbaum's talk on
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<a href="https://www.youtube.com/watch?v=0pebP891V0c">reimplementing NetBSD using a MicroKernel</a>
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was so well-attended it was standing room only.</p>
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<p>There were many other excellent talks, and we recommend
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browsing through the playlist in the links above.</p>
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<p>Activity was not limited to the talks. Each night, the
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"Hacker Lounge" was used by developers to cooperate and
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interact on projects. Embedded projects were popular this
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year, as FreeBSD was installed directly on wireless
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routers.</p>
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<p>The very successful and well-attended closing event, held
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at the Lowerton Brewery, provided an elegant closure to the
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whole conference.</p>
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<p>We would like to thank everyone who made BSDCan 2015 such a
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success, and look forward to next year!</p>
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</body>
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</project>
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<project cat='kern'>
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<title>Adding PCIe Hot-plug Support</title>
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<contact>
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<person>
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<name>
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<given>John-Mark</given>
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<common>Gurney</common>
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</name>
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<email>jmg@FreeBSD.org</email>
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</person>
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</contact>
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<links>
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<url href="http://p4db.freebsd.org/depotTreeBrowser.cgi?FSPC=//depot/projects/pciehotplug">PCIe Hot-plug P4 Branch</url>
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<url href="https://svnweb.freebsd.org/changeset/base/r281874">Commit adding bridge save/restore.</url>
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<url href="https://github.com/FreeBSDFoundation/freebsd/tree/pciehp">Github branch with patches</url>
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</links>
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<body>
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<p>PCI Express (PCIe) hot-plug is used on both laptops and
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servers to allow peripheral devices to be added or removed
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while the system is running. Laptops commonly include a
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hot-pluggable PCIe as either an ExpressCard slot or
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Thunderbolt interface. ExpressCard has built in USB support
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that is already supported by &os;, but ExpressCard PCIe
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devices like Gigabit Ethernet adapters and eSATA cards are
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only supported when they are present at boot, and removal may
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cause &os; to crash.</p>
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<p>The goal of this project is to allow these devices to be
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inserted and removed while &os; is running. The work will
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provide the basic infrastructure to support adding and
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removing devices, though it is expected that additional work
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will be needed to update individual drivers to support
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hot-plug.</p>
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<p>Current testing is focused on getting a simple UART device
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functional. Basic hot swap is functional.</p>
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<p>A set of the patches is now available on github.com.</p>
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</body>
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<sponsor>
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The FreeBSD Foundation
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</sponsor>
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<help>
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<task>
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<p>Get suspend/resume functional by save/restoring necessary
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registers. This should be addressed by r281874.</p>
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</task>
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<task>
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<p>Make sure that upon suspend, devices are removed so we
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are not fooled if they are replaced while the machine is
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suspended.</p>
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</task>
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<task>
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<p>Improve how state transitions are handled, possibly by
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using a proper state machine.</p>
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</task>
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</help>
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</project>
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</report>
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