svn commit: r46539 - head/en_US.ISO8859-1/htdocs/news/status

Tue Apr 14 21:13:43 UTC 2015

Author: bjk
Date: Tue Apr 14 21:13:41 2015
New Revision: 46539
URL: https://svnweb.freebsd.org/changeset/doc/46539

Log:
  Add PCIe hot-plug report
  
  Approved by:	hrs (mentor, implicit)

Modified:
  head/en_US.ISO8859-1/htdocs/news/status/report-2015-01-2015-03.xml

Modified: head/en_US.ISO8859-1/htdocs/news/status/report-2015-01-2015-03.xml
==============================================================================

--- head/en_US.ISO8859-1/htdocs/news/status/report-2015-01-2015-03.xml	Tue Apr 14 21:06:08 2015	(r46538)
+++ head/en_US.ISO8859-1/htdocs/news/status/report-2015-01-2015-03.xml	Tue Apr 14 21:13:41 2015	(r46539)
@@ -905,4 +905,64 @@ WITHOUT_FORTH=y</pre>
     </body>
   </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>
+    </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
+	a 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 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.  The 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 functional.</p>
+    </body>
+
+    <sponsor>The &os; Foundation</sponsor>
+
+    <help>
+      <task>
+	<p>Get suspend/resume functional by saving/restoring the necessary
+	  registers.</p>
+      </task>
+
+      <task>
+	<p>Make sure that upon suspend, devices are removed so that
+	  if they are replaced while the machine is suspended, the
+	  new devices will be detected.</p>
+      </task>
+
+      <task>
+	<p>Improve how state transitions are handled, possibly by
+	  using a proper state machine.</p>
+      </task>
+    </help>
+  </project>
+
 </report>
