Date: Sun, 18 Oct 2015 21:54:09 +0000 (UTC) From: Benjamin Kaduk <bjk@FreeBSD.org> To: doc-committers@freebsd.org, svn-doc-all@freebsd.org, svn-doc-head@freebsd.org Subject: svn commit: r47620 - head/en_US.ISO8859-1/htdocs/news/status Message-ID: <201510182154.t9ILs9Ir022968@repo.freebsd.org>
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Author: bjk Date: Sun Oct 18 21:54:09 2015 New Revision: 47620 URL: https://svnweb.freebsd.org/changeset/doc/47620 Log: Add PCIe Hot-Plug report from jmg Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml ============================================================================== --- head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml Sun Oct 18 21:35:18 2015 (r47619) +++ head/en_US.ISO8859-1/htdocs/news/status/report-2015-07-2015-09.xml Sun Oct 18 21:54:09 2015 (r47620) @@ -3117,4 +3117,73 @@ </help> </project> + <project cat='kern'> + <title>Adding PCIe Hot-plug Support</title> + + <contact> + <person> + <name> + <given>John-Mark</given> + <common>Gurney</common> + </name> + <email>jmg@FreeBSD.org</email> + </person> + </contact> + + <links> + <url href="http://p4db.FreeBSD.org/depotTreeBrowser.cgi?FSPC=//depot/projects/pciehotplug">PCIe + Hot-plug Perforce Branch</url> + <url href="https://svnweb.FreeBSD.org/changeset/base/r281874">Commit + adding bridge save/restore.</url> + <url href="https://github.com/FreeBSDFoundation/freebsd/tree/pciehp">Github + branch with patches</url> + </links> + + <body> + <p>PCI Express (PCIe) hot-plug is used on both laptops and + servers to allow peripheral devices to be added or removed while + the system is running. Laptops commonly include hot-pluggable + PCIe as either an ExpressCard slot or Thunderbolt interface. + ExpressCard has built-in USB support that is already supported by + &os;, but ExpressCard PCIe devices like Gigabit Ethernet adapters + and eSATA cards are only supported when they are present at boot, + and their removal may cause &os; to crash.</p> + + <p>The goal of this project is to allow these devices to be + inserted and removed while &os; is running. This work will provide + the basic infrastructure to support adding and removing devices, + though it is expected that additional work will be needed to + update individual drivers to support hot-plug.</p> + + <p>Current testing is focused on getting a simple UART device + functional. Basic hot swap is currently functional.</p> + + <p>A set of the patches for the work done in this project is + now available on github.com. + </p> + </body> + + <sponsor> + The FreeBSD Foundation + </sponsor> + + <help> + <task> + <p>Get suspend/resume functional by save/restoring the necessary + registers. This should be addressed by r281874.</p> + </task> + + <task> + <p>Make sure that upon suspend, devices are removed so that we + are not fooled if they are replaced with different devices while + the machine is suspended.</p> + </task> + + <task> + <p>Improve how state transitions are handled, possibly by + using a proper state machine.</p> + </task> + </help> + </project> + </report>
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