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<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am looking for ideas here about a problem I am having.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I am working with a new git branch that is supposed to PCI
Express on the CDS.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have a MPC8548E CDS system plugged into an <st1:City
w:st="on"><st1:place w:st="on">Arcadia</st1:place></st1:City> motherboard. I <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>have a PCI Marvel Sata Card plugged into the same <st1:City
w:st="on"><st1:place w:st="on">Arcadia</st1:place></st1:City> mother board.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The driver works flawless when there is NO actual <st1:Street
w:st="on"><st1:address w:st="on">SATA Drive</st1:address></st1:Street> plugged
into<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>this card (the sata_mv driver recognizes and enumerates the ports
on marvel card). <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>The problem comes when I plug a SATA drive into one of the
SATA ports on this card.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>When I boot the kernel after doing this and as the sata/ata
driver starts probing the<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Sata card/jport for devices – it jumps off to ‘never
never land’ (never returns from the <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>second write flush of the control register (writing 0x301 to
SCR_CONTROL (and <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>reading it back) and then writing 0x300 to same
register – it never actually returns<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>from the writefl of that 0x300 value to the
SCR_Control. <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>FWIW, I have cross ported this driver (and its slightly
different ata infrastructure to a<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>x86 platform (running a 2.6.19.x kernel) and it does work in
that environment . Further, <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I have cross ported the original working 2.6.19.1 driver to
this git branch – and it fails <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>in exactly the same spot.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>It smells that there is some type of interrupt /
configuration mismatch for the PCI bus for the <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>CDS that is executed upon this probe sequence of a valid
SATA/ATA Port?<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>Has anyone experienced this problem themselves? What can I
do? Thanks in advance <o:p></o:p></span></font></p>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>for all of your support!<o:p></o:p></span></font></p>
<p style='margin-bottom:12.0pt'><strong><b><font size=2 color=navy
face=Verdana><span style='font-size:10.0pt;font-family:Verdana;color:navy'>Tom
Morrison</span></font></b></strong><font size=2 color=navy face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:navy'><br>
</span></font><font color=navy><span style='color:navy'>Principal Software
Engineer</span></font><o:p></o:p></p>
<p style='margin-bottom:12.0pt'><strong><b><font size=2 color=navy
face=Verdana><span style='font-size:10.0pt;font-family:Verdana;color:navy'>EMPIRIX</span></font></b></strong><font
size=2 color=navy face=Verdana><span style='font-size:10.0pt;font-family:Verdana;
color:navy'> </span></font><font color=navy><span style='color:navy'><br>
<u1:Street u2:st="on"><u1:address u2:st="on"><st1:Street w:st="on"><st1:address
w:st="on">20 Crosby Drive</u1:address></u1:Street></st1:address></st1:Street> </span></font><b><font
color="#ff6600"><span style='color:#FF6600;font-weight:bold'>-</span></font></b><font
size=2 color=navy face=Verdana><span style='font-size:10.0pt;font-family:Verdana;
color:navy'> <u1:place u2:st="on"><u1:City u2:st="on"><st1:place w:st="on"><st1:City
w:st="on">Bedford</u1:City></st1:City>, <u1:State u2:st="on"><st1:State w:st="on">MA</u1:State></st1:State><b><font
size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
font-family:"Times New Roman";color:black;font-weight:bold'> </span></font></b><font
size=3 color=black face="Times New Roman"><span style='font-size:12.0pt;
font-family:"Times New Roman";color:black'> <u1:PostalCode u2:st="on"></span></font><st1:PostalCode
w:st="on">01730</u1:PostalCode></u1:place></st1:PostalCode></st1:place></span></font><br>
<b><font color="#ff6600"><span style='color:#FF6600;font-weight:bold'>p:</span></font></b><font
color="#ff6600"><span style='color:#FF6600'> </span></font><font size=2
color=navy face=Verdana><span style='font-size:10.0pt;font-family:Verdana;
color:navy'>781.266.3567 </span></font><b><font size=2 color="#ff6600"
face=Verdana><span style='font-size:10.0pt;font-family:Verdana;color:#FF6600;
font-weight:bold'>f:</span></font></b> <font size=2 color=navy face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:navy'>781.266.3670 </span></font><b><span
style='font-weight:bold'><br>
</span></b><b><font size=2 color="#ff6600" face=Verdana><span style='font-size:
10.0pt;font-family:Verdana;color:#FF6600;font-weight:bold'>email:</span></font></b>
<u><font size=2 color=blue face=Verdana><span style='font-size:10.0pt;
font-family:Verdana;color:blue'><a href="mailto:tmorrison@empirix.com"><font
size=3><span style='font-size:12.0pt'>tmorrison@empirix.com</span></font></a></span></font></u><font
size=2 color=navy face=Verdana><span style='font-size:10.0pt;font-family:Verdana;
color:navy'> </span></font><font size=2 color="#ff6600" face=Verdana><span
style='font-size:10.0pt;font-family:Verdana;color:#FF6600'><br>
<a href="http://www.empirix.com/"><font size=3><span style='font-size:12.0pt'>www.empirix.com</span></font></a></span></font><font
size=2 color=navy face=Verdana><span style='font-size:10.0pt;font-family:Verdana;
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