I maintain the tsi148 and the universe-II drivers. I confirm -KO6 is my latest 
version, last updated for 32-bit Debian-11, and we still use it at TRIUMF.

It is good news that the vme_universe kernel module built, loaded and reported 
correct stuff to dmesg.

It is not clear why mvme_read_value() crashed. We need to know the value of 
vme_addr and addr, can you add printf()s for them using format "%08x" and try 
again?

K.O.

<p>&nbsp;</p>

<table align="center" cellspacing="1" style="border:1px solid #486090; 
width:98%">
	<tbody>
		<tr>
			<td style="background-color:#486090">Caleb Marshall 
wrote:</td>
		</tr>
		<tr>
			<td style="background-color:#FFFFB0">
			<p>Hello,</p>

			<p>At our lab we are currently in the process of 
migrating more of our systems over to Midas. However, all of our working systems 
are dependent on SBCs with the Tsi-148 chips of which we only have a handful. In 
order to have some backups and spares for testing, we have been attempting to 
get Midas working with some borrowed SBCs (Concurrent Technologies VX 40x/04x) 
with Universe-II chips. The SBC is running&nbsp;CentOS 7.&nbsp;I have tried to 
follow the instructions posted <a 
href="https://daq00.triumf.ca/DaqWiki/index.php/VME-
CPU#V7648_and_V7750_BIOS_Settings">here</a>. The universe-II kernel module 
appears to load correctly, dmesg gives:</p>

			<p>[ &nbsp; 32.384826] VME: Board is system 
controller<br />
			[ &nbsp; 32.384875] VME: Driver compiled for SMP 
system<br />
			[ &nbsp; 32.384877] VME: Installed VME Universe module 
version: 3.6.KO6<br />
			&nbsp;</p>

			<p>However, running vmescan.exe fails with a segfault. 
Running with gdb shows:</p>

			<p>vmic_mmap: Mapped VME AM 0x0d addr 0x00000000 size 
0x00ffffff at address 0x80a01000<br />
			mvme_open:<br />
			Bus handle &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;= 0x7<br />
			DMA handle &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 
&nbsp;= 0x6045d0<br />
			DMA area size &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; = 
1048576 bytes<br />
			DMA &nbsp; &nbsp;physical address = 0x7ffff7eea000<br />
			vmic_mmap: Mapped VME AM 0x2d addr 0x00000000 size 
0x0000ffff at address 0x86ff0000</p>

			<p>Program received signal SIGSEGV, Segmentation fault.
<br />
			mvme_read_value (mvme=0x604010, vme_addr=&lt;optimized 
out&gt;)<br />
			&nbsp; &nbsp; at 
/home/jam/midas/packages/midas/drivers/vme/vmic/vmicvme.c:352<br />
			352&nbsp;&nbsp; &nbsp; &nbsp; &nbsp;dst &nbsp;= *((WORD 
*)addr);<br />
			&nbsp;</p>

			<p>With the pointer addr originating from a call 
to&nbsp;vmic_mapcheck within the&nbsp;&nbsp;mvme_read_value functions in the 
vmicvme.c file. Help with where to go from here would be appreciated.</p>

			<p>-Caleb&nbsp;</p>

			<p>&nbsp;</p>
			</td>
		</tr>
	</tbody>
</table>

<p>&nbsp;</p>