Re: Using ncr53c8xx.c for a 53c770 chip

[Rask Ingemann Lambertsen <rask@sygehus.dk>]

On Tue, Jan 13, 2004 at 11:33:03AM -0500, James Bottomley wrote:
> On Tue, 2004-01-13 at 08:55, Rask Ingemann Lambertsen wrote:
> 
> > I also need some help filling in the ncr_slot structure. The registers are
> > memory mapped at bus address 0xf40000 and the script RAM is memory mapped at
> > bus address 0xf41000. So I guess base is for the registers, base2 is for
> > the script RAM and that *_v is for the virtual memory addresses of the above.
> > That still leaves me with io_port, base_c, base2_c and base_io.
> 
> That should be correct...although I've not tested it, it might be wise
> to begin without the FE_RAM as well.  I can check this with the
> NCR_Q720, though if you get problems.  Although it doesn't have on-chip
> ram for scripts, the board itself has 2Mb of ram behind the MCA window

OK. Btw, searching for paddr2 shows use of vtobus(). :-(

> > Where do I tell the driver about the SCSI clock (50 MHz)?
> 
> The driver will work it out...it has its own timing routine.

Good. I'm not entirely sure that all boards use a 50 MHz clock. Partly
because several models of the board exists and partly because some people
overclock their boards.

-- 
Regards,
Rask Ingemann Lambertsen