2.1.103 aha1542 lockup; 2.1.102 UFS and NeXT success

Trevor Johnson (trevor@jpj.net)
Thu, 28 May 1998 01:36:46 -0400 (EDT)

When I did "modprobe aha1542" under Linux 2.1.103 on my PC, it locked up:
flogging the keyboard had no effect and gpm (X was not running) stopped
responding. Doing the same under 2.1.102 was successful:

Configuring Adaptec (SCSI-ID 7) at IO:334, IRQ 10, DMA priority 6
scsi1 : Adaptec 1542
scsi : 1 host.
Vendor: MAXTOR Model: XT-8380S Rev: B3C
Type: Direct-Access ANSI SCSI revision: 01 CCS
Detected scsi disk sda at scsi1, channel 0, id 0, lun 0
SCSI device sda: hdwr sector= 1024 bytes. Sectors= 357720 [349 MB] [0.3
GB]
sda: unknown partition table

Here are the first few bytes from the hard drive:

0000 64 6c 56 33 00 00 00 00 00 00 00 00 4e 65 78 74 dlV3.... ....Next
0010 53 74 65 70 5f 32 2e 30 00 00 00 00 00 00 00 00 Step_2.0 ........
0020 00 00 00 00 00 00 00 00 0f 2a ed 2c 4d 41 58 54 ........ .*.,MAXT
0030 4f 52 20 58 54 2d 38 33 38 30 53 2d 31 30 32 34 OR XT-83 80S-1024
0040 00 00 00 00 66 69 78 65 64 5f 72 77 5f 73 63 73 ....fixe d_rw_scs
0050 69 00 00 00 00 00 00 00 00 00 00 00 00 00 04 00 i....... ........
0060 00 00 00 08 00 00 00 1c 00 00 06 60 00 00 0e 10 ........ ...`....
0070 00 a0 00 00 00 00 00 00 00 00 00 00 00 00 00 20 ........ .......
0080 00 00 00 60 73 64 6d 61 63 68 00 00 00 00 00 00 ...`sdma ch......
0090 00 00 00 00 00 00 00 00 00 00 00 00 6c 6f 63 61 ........ ....loca
00a0 6c 68 6f 73 74 00 00 00 00 00 00 00 00 00 00 00 lhost... ........
00b0 00 00 00 00 00 00 00 00 00 00 00 00 61 62 00 00 ........ ....ab..
00c0 00 00 00 05 74 b8 20 00 04 00 74 00 00 10 10 00 ....t. . ..t.....
00d0 0a 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........
00e0 00 00 01 34 2e 33 42 53 44 00 00 00 ff ff ff ff ...4.3BS D.......
00f0 ff ff ff ff ff ff ff ff 00 00 ff ff ff ff ff 00 ........ ........
0100 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ........ ........

Under 2.1.102, I was able to do "mount -t ufs -o ro /dev/sda /mnt" and
read the files from the drive. I got an error while doing "strings `find
etc -type f`":

ufs_read_inode: zero gen ino 50066 pblk 215202 dev 8/0

but maybe that was because the NeXT hadn't been shut down properly. I was
able to read the contents of the disk to an image file with no problems
under 2.1.102.

My hardware: Amptron PM7400 motherboard
(http://users.deltanet.com/users/amptron/7400-1.html), stepping 12 Pentium
"classic", two IDE hard drives using PIO (because of a problem I reported
earlier), Adaptec AHA542CF with the DIP switches set to
up-down-up-up-down-down-down-up (BIOS enabled, IRQ 10, 0x334), with the
Maxtor drive on one end of the bus (at boot time, I got a message similar
to "start unit command failed") and Sony CDROM drive with no power at the
other end, uninitialized Creative Labs Sound Blaster 32 PnP, Cirrus Logic
ISA video card, floppy, serial mouse, keyboard, Realtek 8029 Ethernet card
at 0x6000 and IRQ 11.

My configuration files are available at
http://jpj.net/~trevor/linux/config-2.1.102-topside and
http://jpj.net/~trevor/linux/config-2.1.103-topside .
___
Trevor Johnson

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