svn commit: r47620 - head/en_US.ISO8859-1/htdocs/news/status

Sun Oct 18 21:54:11 UTC 2015

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 at 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>
