Messages in this thread | | | Date | Fri, 23 Jul 1999 23:05:23 +0200 | From | Marc Mutz <> | Subject | Re: NCR53Cxxx drivers |
| |
Barrett G. Lyon wrote: > > At 04:43 PM 7/23/99 +0200, you wrote: > >Barrett G. Lyon wrote: > >> > ><snip> > >> The three drivers are: > >> > >> CONFIG_SCSI_NCR53C7xx generic driver > >> CONFIG_SCSI_NCR53C8XX generic driver > >> CONFIG_SCSI_NCR53C8XX_SYMBIOS_COMPAT symbios driver > >> > >Shouldn't no.3 be CONFIG_SCSI_SYM53C8XX instead? > > You would think? Thats why I wrote the email, because it felt as if > something was not right. > From my understanding of the help text to CONFIG_SCSI_SYM53C8XX the ncr53c8xx driver (never used ncr53c7xx myself, so omitting comments to that one) can drive mostly all boards with that chip, while the sym driver can handle only newer boards from symbios logic, but uses new features that the ncr driver cannot use.
I used ncr... first to drive my symbios logic USCSI board, then sym, both w/o any problems.
CONFIG_SCSI_NCR53C8XX_SYMBIOS_COMPAT just tells the {ncr,sym}53c8xx drivers to assume on boards w/o nvram that the IO lines wiring is symbios compatible, so added functionality can be used.
To sum up: - ncr53c{7,8}xx are fairly orthogonal to each other in that they support different chipsets. - {ncr,sym}53c8xx are not orthogonal, because the sym driver handles a subset of chipset{s, revisions} the ncr handles, but supports advanced features of that subset. - CONFIG_SCSI_NCR53C8XX_SYMBIOS_COMPAT is just an opion to {ncr,sym}53c8xx
Marc
-- Marc Mutz <Marc@Mutz.com> http://marc.mutz.com/ University of Bielefeld, Dep. of Mathematics / Dep. of Physics
PGP-keyID's: 0xd46ce9ab (RSA), 0x7ae55b9e (DSS/DH)
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
| |