PowerPC SCSI driver

[F. H. <fh...@at...>]

This is what I get with the latest hacking on the 
PUP SCSI.  This is forcing the driver into MMIO
mode.  It fails two of the three cache tests. I need
to figure out why.  BTW I used 5 and 7 as the swapper
values because I thought the 1 and 2 might give a
misleading  result.  They didn't...

BTW  Richard Hirst (spelling?) has modified the 
sym53c8xx driver to work with a 53c720 chip on
some HP hardware.  I know the 53c720 chips is a 
very close relative or predecessor to the 53c770
chip.  The only thing is is that the interface to
the driver is through a special 'zalon' chip.

I may try applying his patch and see if I can get
that driver to do anything.  Nothing like parallel
development on two drivers that don't work. :)

Trying to detect PuP SCSI...
ncr53c8xx: 53c770 detected 
ncr53c770-0: rev=0x00, base=0xf40000, io_port=0x0, irq=12
new NCB[2932] @c02f2000.
Storing input
new SCRIPT[3772] @c3f33000.
new SCRIPTH[3708] @c3f32000.
np: ID: 770 REV: 0 FEA: 15382 CLCK: 5 OF: 10
Initialize timer
paddr: f40000 paddr2: 0
io_port: 0
Peparing...
stuff: 10 5 192 32 1
set verbose:
myaddr: 0
myaddr: 7
myaddr: 7
ncr53c770-0: ID 7, Fast-20, Parity Checking
verbose:5
ncr53c770-0: initial SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 05/c0/20/00/00/04
ncr53c770-0: final   SCNTL3/DMODE/DCNTL/CTEST3/4/5 = (hex) 05/82/20/00/08/24
no on-board ram
scripth: c3f32000 p_scripth: bf32000 script: c3f33000 p_script: bf33000
Resetting for snoop test
offset: c
istat: 0
SCSI reset
istat: 40
cleared
istat: 0
test: aabbff11 aabbff11
offset: c
virt_to_phys(np): 82f2000
np: c02f2000
ncr_cache: 00000000 pc: 0bf32e50
np->ncr_cache: 00000005
nc_dsp: 0bf32e5c
offset: 00000014
offset: 00000014
CACHE TEST FAILED: host wrote 5, ncr read 0.
CACHE TEST FAILED: ncr wrote 7, host read 5.
CACHE INCORRECTLY CONFIGURED.
ncr53c770-0: detaching...
-- 
Fred