NetBSD/pmax asc(4) SCSI error

[Dima Veselov <kab00m%lich.phys.spbu.ru@localhost>]

Greetings,

Trying to netboot DECstation 5000/260. asc(4) get frozen on SCSI scan
with 9.3, but not with 8.0 or 10-current. Adapter have external disk box
attached if that matters.

10-BETA boot:

[   1.0000000] asc0 at ioasic0 offset 0x300000: NCR53C94, 25MHz, SCSI ID 7
[   1.0000000] scsibus0 at asc0: 8 targets, 8 luns per target
[   1.0000000] sfb0 at tc0 slot 0 offset 0x0: 1280x1024, 8bpp
[   1.0000000] wsdisplay0 at sfb0 kbdmux 1
[   1.0018658] scsibus0: waiting 2 seconds for devices to settle...
[   1.0838572] WARNING: system needs entropy for security; see entropy(7)

9.3 boot:

[   1.0067919] scsibus0: waiting 2 seconds for devices to settle...
[  13.0768947] probe(asc0:0:0:0): asc0: timed out [ecb 0x89f2cfa8 (flags 0x1, dl
eft 24, stat 0)], <state 2, nexus 0x89f2cfa8, phase(l 0, c 101, p 101), resid 0,
 msg(q 0,o 0) >
[  15.2565529] probe(asc0:0:0:0): asc0: timed out [ecb 0x89f2cfa8 (flags 0x41, d
left 24, stat 0)], <state 2, nexus 0x89f2cfa8, phase(l 0, c 101, p 101), resid 0
, msg(q 0,o 0) > AGAIN

And then it is hung forever.

sys/arch/pmax/tc/asc_ioasic.c seem to have no recent significant changes.

Is there any hint about changes to pull to compile working 9.3 kernel?

Complete dmesg containing the problem:

-tftp boot(3), bootp 10.16.0.1:NetBSD/NetBSD-9.3/pmax/netbsd-INSTALL.ecoff
-tftp load 6617136+0+80000
[   1.0000000] segment  0 start 00000000 size 0a000000
[   1.0000000] phys segment: 0xa000000 @ 0
[   1.0000000] adding 0x16a000 @ 0x696000 to freelist 1
[   1.0000000] adding 0x9800000 @ 0x800000 to freelist 0
[   1.0000000] Copyright (c) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 200
4, 2005,
[   1.0000000]     2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2
016, 2017,
[   1.0000000]     2018, 2019, 2020, 2021, 2022
[   1.0000000]     The NetBSD Foundation, Inc.  All rights reserved.
[   1.0000000] Copyright (c) 1982, 1986, 1989, 1991, 1993
[   1.0000000]     The Regents of the University of California.  All rights rese
rved.

[   1.0000000] NetBSD 9.3 (RAMDISK) #0: Thu Aug  4 15:30:37 UTC 2022
[   1.0000000]  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/pmax/compile/RAMDIS
K
[   1.0000000] DECstation 5000/260 (3MAXPLUS)
[   1.0000000] total memory = 160 MB
[   1.0000000] avail memory = 150 MB
[   1.0000000] mainbus0 (root)
[   1.0000000] cpu0 at mainbus0: MIPS R4400 CPU (0x440) Rev. 4.0 with MIPS R4010
 FPC Rev. 0.0
[   1.0000000] cpu0: 48 TLB entries, 16MB max page size
[   1.0000000] cpu0: 16KB/16B direct-mapped L1 instruction cache
[   1.0000000] cpu0: 16KB/16B direct-mapped write-back L1 data cache
[   1.0000000] cpu0: 1024KB/32B direct-mapped write-back L2 unified cache
[   1.0000000] tc0 at mainbus0: 25 MHz clock
[   1.0000000] ioasic0 at tc0 slot 3 offset 0x0
[   1.0000000] le0 at ioasic0 offset 0xc0000: address 08:00:2b:28:48:2c
[   1.0000000] le0: 32 receive buffers, 8 transmit buffers
[   1.0000000] zsc0 at ioasic0 offset 0x100000
[   1.0000000] zsc0: channel 0 not configured
[   1.0000000] zstty0 at zsc0 channel 1
[   1.0000000] zsc1 at ioasic0 offset 0x180000
[   1.0000000] lkkbd0 at zsc1 channel 0
[   1.0000000] lkkbd0: no keyboard
[   1.0000000] wskbd0 at lkkbd0 mux 1
[   1.0000000] zstty1 at zsc1 channel 1 (console i/o)
[   1.0000000] mcclock0 at ioasic0 offset 0x200000: mc146818 or compatible
[   1.0000000] asc0 at ioasic0 offset 0x300000: NCR53C94, 25MHz, SCSI ID 7
[   1.0000000] scsibus0 at asc0: 8 targets, 8 luns per target
[   1.0000000] sfb0 at tc0 slot 0 offset 0x0: 1280x1024, 8bpp
[   1.0000000] wsdisplay0 at sfb0 kbdmux 1
[   1.0067919] scsibus0: waiting 2 seconds for devices to settle...
[  13.0768947] probe(asc0:0:0:0): asc0: timed out [ecb 0x89f2cfa8 (flags 0x1, dl
eft 24, stat 0)], <state 2, nexus 0x89f2cfa8, phase(l 0, c 101, p 101), resid 0,
 msg(q 0,o 0) >
[  15.2565529] probe(asc0:0:0:0): asc0: timed out [ecb 0x89f2cfa8 (flags 0x41, d
left 24, stat 0)], <state 2, nexus 0x89f2cfa8, phase(l 0, c 101, p 101), resid 0
, msg(q 0,o 0) > AGAIN

--
Sincerely yours,
Dima Veselov
Physics R&D Establishment of Saint-Petersburg University