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2003-10-02 19:59:04 +00:00

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" [
<!ENTITY base CDATA "../..">
<!ENTITY date "$FreeBSD: www/en/projects/busdma/index.sgml,v 1.72 2003/08/18 20:31:13 murray Exp $">
<!ENTITY title "FreeBSD busdma and SMPng driver conversion project">
<!ENTITY email 'mux'>
<!ENTITY % includes SYSTEM "../../includes.sgml"> %includes;
<!-- Status levels -->
<!ENTITY status.done "<font color=green>Done</font>">
<!ENTITY status.wip "<font color=blue>In progress</font>">
<!ENTITY status.untested "<font color=yellow>Needs testing</font>">
<!ENTITY status.new "<font color=red>Not done</font>">
<!-- The list of contributors was moved to a separate file so that it can
be used by other documents in the FreeBSD web site. -->
<!ENTITY % developers SYSTEM "../../developers.sgml"> %developers;
]>
<html>
&header;
<h2>Contents</h2>
<ul>
<li><a href="#goal">Project Goal</a></li>
<li><a href="#platform-status">Platform Support Status</a></li>
<li><a href="#ifnet-status">Network Interface Driver Status</a></li>
<li><a href="#storage-status">Storage Device Driver Status</a></li>
<li><a href="#misc-status">Miscellaneous Device Driver Status</a></li>
<li><a href="#doc-status">Documentation Status</a></li>
</ul>
<a name="goal"></a>
<h2>Project Goal</h2>
<p><b>busdma</b></p>
<p>The busdma interfaces permit hardware device drivers to operate
on a variety of platforms avoiding the encoding of platform-specific
access methods into drivers. This lowers the maintenance costs
for drivers across platforms, and improves the chances that a driver
will "just work" on a new platform. Modifying a driver to make use
of busdma is relatively straight forward, but does require
familiarity with both the device driver and busdma primitives.
For busdma to be used in FreeBSD, two sets of changes are generally
required: adaptation of the busdma implementation to run on all
platforms, and adaptation of drivers to use the framework. As such,
status information on this project is broken down into platform
support, and driver support (sorted by category). Completing
this work requires a thorough audit of the system device drivers,
then prioritized conversion of drivers.</p>
<p><b>INTR_MPSAFE</b></p>
<p>Hardware drivers register their interrupt handler with the
<code>bus_setup_intr()</code> function. Setting the flag
<code>INTR_MPSAFE</code> tells the system interrupt code
to call the interrupt routine without holding the Giant
mutex. This can give a significant performance gain on SMP
systems.</p>
<p>Drivers can set this flag even if they are not fully locked
down as long as their interrupt routine is careful about not
touching other data structures in the driver. An easy way to
do this is to check and clear the hardware interrupt status
registers and then schedule the interrupt processing for a
taskqueue or kernel thread.</p>
<p><b>SMPng locked</b></p>
<p>Drivers should employ mutexes and sx locks to protect their
data structures and hardware registers from competing threads.
Mutex operations are somewhat expensive, so a good strategy is
combine as many atomic operations into a single mutex acquisition
as possible.</p>
<p><b>p!=a safety</b></p>
<p>Intel PAE support requires that pointers and physical address
representations be of differing sizes. This means that drivers
must be written to use vm_paddr_t or bus_addr_t rather than
assuming that physical addresses can be represented using a
void *. In addition, format strings and casts must be
carefully handled.</p>
<p>The task list below is not intended to be complete, but does
represent a set of relevant and/or important components of the
overall work. The "Responsible" field identifies a developer who
has expressed willingness to be responsible for completing the
identified task; this doesn't preclude others working on it,
but suggests that coordination with the responsible party might
be appropriate so as to avoid unnecessary duplication of work,
and to maximize forward progress. If beginning work on a new
area of substantial size, or one that appears unclaimed, it may
be worth dropping an e-mail to &a.mux; to see if any progress
has been made.</p>
<p>The definition of the date field varies depending on the status
of a task. For completed tasks, it refers to the date completed
or reported completed. For in-progress tasks, it refers to the
date of the last update of the entry. For stalled tasks, it
refers to the date that the task was declared stalled. For
new tasks, it refers to the date the task was added to the list.</p>
<p>Tasks are sorted first by status, then by date.</p>
<a name="platform-status"></a>
<h2>Platform Support Status</h2>
<table border=3>
<tr>
<th> Task </th>
<th> Responsible </th>
<th> Last updated </th>
<th> Status </th>
<th> Details </th>
</tr>
<tr>
<td>alpha</td>
<td>&a.gallatin;</td>
<td>December 10, 2002</td>
<td>&status.done;</td>
<td>There may be problems for systems with large amounts
of memory.</td>
</tr>
<tr>
<td>amd64</td>
<td>&a.peter;</td>
<td>July 1, 2003</td>
<td>&status.done;</td>
<td>Fully supported.</td>
</tr>
<tr>
<td>ia64</td>
<td>&a.marcel;</td>
<td>December 10, 2002</td>
<td>&status.done;</td>
<td>There may be problems for systems with large amounts
of memory.</td>
</tr>
<tr>
<td>i386</td>
<td>&a.sam;</td>
<td>December 9, 2002</td>
<td>&status.done;</td>
<td>Fully supported.</td>
</tr>
<tr>
<td>powerpc</td>
<td>&a.hmp;</td>
<td>January 15, 2003</td>
<td>&status.done;</td>
<td>Fully supported.</td>
</tr>
<tr>
<td>sparc64</td>
<td>&a.tmm;</td>
<td>January 6, 2003</td>
<td>&status.done;</td>
<td>Fully supported.</td>
</tr>
</table>
<a name="ifnet-status"></a>
<h2>Network Interface Driver Status</h2>
<table border=3>
<tr>
<th> Driver </th>
<th> Responsible </th>
<th> Last updated </th>
<th> busdma </th>
<th> INTR_MPSAFE </th>
<th> SMPng locked </th>
<th> a!=p </th>
<th> 4.x status </th>
<th> Notes </th>
</tr>
<tr>
<td> if_ar </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> kvtop() </td>
</tr>
<tr>
<td> if_bge </td>
<td> &a.wpaul; </td>
<td> July 26, 2003 </td>
<td> &status.untested; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_cs </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_dc </td>
<td> &a.mux; </td>
<td> April 17, 2003 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.untested; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_de </td>
<td> &a.mux; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_ed </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> kvtop() </td>
</tr>
<tr>
<td> if_em </td>
<td> &a.pdeuskar; </td>
<td> December 19, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_en </td>
<td> &a.harti; </td>
<td> March 4, 2003 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.untested; </td>
<td> &status.new; </td>
<td> &nbsp; <td>
</tr>
<tr>
<td> if_fxp </td>
<td> &a.mux; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_fwe </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_gem </td>
<td> &a.tmm; </td>
<td> January 6, 2003 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> N/A </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_gx </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_hme </td>
<td> &a.tmm; </td>
<td> January 6, 2003 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> N/A </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_idt </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_lge </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_lmc </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_lnc </td>
<td> &a.obrien; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys(). Please contact &a.phk; for info/hardware. </td>
</tr>
<tr>
<td> if_mn </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys(). Please contact &a.phk; for info/hardware. </td>
</tr>
<tr>
<td> if_my </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_nge </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_pcn </td>
<td> &a.obrien; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_pdq </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> mostly busdma, except for vtophys() </td>
</tr>
<tr>
<td> if_rl </td>
<td> &a.wpaul; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_sf </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_sis </td>
<td> &a.wpaul; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_sk </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_sr </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_ste </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_ti </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_tl </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_tx </td>
<td> &a.mux; </td>
<td> April 19, 2003 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.untested; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> if_txp </td>
<td> &a.will; </td>
<td> July 18, 2003 </td>
<td> &status.wip; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_vr </td>
<td> Christian S.J. Peron &lt;maneo@bsdpro.com&gt; </td>
<td> January 20, 2003 </td>
<td> &status.wip; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_wb </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> if_xl </td>
<td> &a.mux; </td>
<td> December 17, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
</table>
<a name="storage-status"></a>
<h2>Storage Device Driver Status</h2>
<table border=3>
<tr>
<th> Driver </th>
<th> Responsible </th>
<th> Last updated </th>
<th> busdma </th>
<th> INTR_MPSAFE </th>
<th> SMPng locked </th>
<th> a!=p </th>
<th> 4.x status </th>
<th> Notes </th>
</tr>
<tr>
<td> aac </td>
<td> &a.scottl; </td>
<td> February 8, 2003 </td>
<td> &status.done; </td>
<td> &status.done; </td>
<td> &status.done; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> PCI-64 capable, not endian clean </td>
</tr>
<tr>
<td> adv </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> aha </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> ahb </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> aic7xxx </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> amd </td>
<td> &nbsp; </td>
<td> December 14, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> amr </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> asr </td>
<td> &a.obrien; </td>
<td> January 4, 2003 </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> ata </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> buslogic </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> ciss </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> ct </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> dpt </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> ida </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> iir </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> isp </td>
<td> &nbsp; </td>
<td> February 8, 2003 </td>
<td> &status.done; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> mlx </td>
<td> &a.scottl; </td>
<td> February 8, 2003 </td>
<td> &status.done; </td>
<td> &status.wip; </td>
<td> &status.wip; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> mly </td>
<td> &a.scottl; </td>
<td> February 8, 2003 </td>
<td> &status.done; </td>
<td> &status.wip; </td>
<td> &status.wip; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> mpt </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> ncr </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys(). Please contact &a.phk; for a possible source
of hardware. </td>
</tr>
<tr>
<td> pst </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> stg </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> At least, it looks like it may well be. </td>
</tr>
<tr>
<td> sym </td>
<td> &nbsp; </td>
<td> December 19, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> trm </td>
<td> &a.cognet; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> twe </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
</table>
<a name="misc-status"></a>
<h2>Miscellaneous Device Driver Status</h2>
<table border=3>
<tr>
<th> Driver </th>
<th> Responsible </th>
<th> Last updated </th>
<th> busdma </th>
<th> INTR_MPSAFE </th>
<th> SMPng locked </th>
<th> a!=p </th>
<th> 4.x status </th>
<th> Notes </th>
</tr>
<tr>
<td> agp </td>
<td> &a.cognet; </td>
<td> January 23, 2003 </td>
<td> &status.wip; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> bktr </td>
<td> &a.cognet; </td>
<td> January 15, 2003 </td>
<td> &status.wip; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> cs </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> digi </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> drm </td>
<td> &a.anholt; </td>
<td> February 17, 2003 </td>
<td> &status.wip; </td>
<td> &status.wip; </td>
<td> &status.wip; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> exca </td>
<td> &a.imp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> fb </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> firewire </td>
<td> &a.simokawa; </td>
<td> April 17, 2003 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> hea </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> hfa </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> hifn </td>
<td> &a.sam; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> meteor </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() </td>
</tr>
<tr>
<td> musycc </td>
<td> &nbsp; </td>
<td> &nbsp; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys(). Please contact &a.phk; for info/hardware. </td>
</tr>
<tr>
<td> pcm </td>
<td> &a.cognet; </td>
<td> February 20, 2003 </td>
<td> &status.done; </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
<tr>
<td> ubsec </td>
<td> &a.sam; </td>
<td> December 9, 2002</td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> vtophys() is used in debugging printf </td>
</tr>
<tr>
<td> usb </td>
<td> &a.jmg; </td>
<td> July 24, 2003 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> a!=p should be clean, but requires further testing </td>
</tr>
<tr>
<td> wds </td>
<td> &nbsp; </td>
<td> December 9, 2002 </td>
<td> &status.done; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &status.new; </td>
<td> &nbsp; </td>
</tr>
</table>
<a name="doc-status"></a>
<h2>Documentation Status</h2>
<table border=3>
<tr>
<th> Task </th>
<th> Responsible </th>
<th> Last updated </th>
<th> Status </th>
<th> Notes </th>
</tr>
<tr>
<td> manpages for the busdma API </td>
<td> &a.hmp; </td>
<td> January 15, 2003 </td>
<td> &status.done; </td>
<td> &nbsp; </td>
</tr>
</table>
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