linux2.6.1 - sym53c8xx: wide:0 documented, but not supported?
Hello!
I do own an SCSI host controller from Dawicontrol ( http://www.dawicontrol.com/ ). Model name is "DC-2975 U".
This host controller has a problem wich is covered within the documentation inside kernel 2.6.1 in the file "Documentation/scsi/sym53c8xx_2.txt":
Quoted 7 lines
10.2.9 Max wide
wide:1 wide scsi enabled
wide:0 wide scsi disabled
Some scsi boards use a 875 (ultra wide) and only supply narrow connectors. If you have connected a wide device with a 50 pins to 68 pins cable converter, any accepted wide negotiation will break further data transfers. In such a case, using "wide:0" in the bootup command will be helpfull.
The controller works fine with linux 2.4.x when "wide:0" is set. But it looks like this option is not supported with linux 2.6.x. I do think so because of two reasons:
1) Setting it seems to have no effect.
2) From looking at the source:
File drivers/scsi/sym53c8xx_2/sym_glue.c defines this:
Quoted 9 lines
static char setup_token[]
__initdata="tags:" "burst:" "led:" "diff:" "irqm:" "buschk:" "hostid:" "revprob:" "verb:" "debug:" "settle:" "nvram:" "excl:" "safe:" ;
"wide:0" is missing. I am not good with C and I might be wrong here. But reason no. 1 remains true still.
Can anyone confirm if my controller is not supported by linux2.6.x? If yes, does anyone know if there is a patch or some other help available? Is anyone working on this?
Regards
Florian
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Florian Hinzmann private: [email protected] Debian: [email protected] PGP Key / ID: 1024D/B4071A65 Fingerprint : F9AB 00C1 3E3A 8125 DD3F DF1C DF79 A374 B407 1A65