Re: [9fans] Compaq Prof. Wkstn. 5000 and Plan 9

Re: [9fans] Compaq Prof. Wkstn. 5000 and Plan 9

[jmk]

	>I have a Compaq 5000 Professional Workstation with dual Pentium
	>Pro II CPUs and internal SCSI and IDE adaptors.

	>Solaris 8 installation proved problematic because Solaris could
	>not see my SCSI drive despite DOS and Windows 98 doing so.

	>Now it seems Plan 9 has the same problem.  Using Compaq's
	>inspect, it appeared the IDE controller was IRQ 15, and
	>the Network, SCSI controller and Matrox all shared IRQ 11.

	>Fiddling with things, I managed to get all devices onto seperate
	>IRQs, but pickdisk still fails with "No disk devices were found
	>on your system."

An aside about IRQs. On a uniprocessor x86 it usually makes sense to
arrange for PCI devices to have separate IRQs for efficiency reasons
but they should work when shared (modulo driver bugs).
However, on a system conforming to Intel's Multiprocessor Specification
it isn't necessary, the hardware and operating system software can and do
arrange for each device to have a separate line to the interrupt controller
and a separate interrupt vector; in other words, the IRQ value the card
reports is irrelevant.

	>Plan 9 appears to recognise the controller because it prints
	>dev A0 config 85C0 capabilities 0F00 mwdma 0103 dma 00000001 rwm 0
	>sd53c8xx: SYM53C875 rev. 0x03 intr=10 command=2000157
	>at boot time, and also "sd53c8xx: differential mode set" 16 times,
	>suggesting once for each target since it is a wide controller.

Do you know if it's really a differential controller and drive? The way
this is determined by the driver is only known to work on cards manufactured
by Symbios themselves (according to the comments in the driver). It's
possible differential mode is being detected incorrectly.

	>I have set debug=1 in the plan9.ini as the troubleshooting manual
	>suggests, but it didn't help much.

	>Pressing Control-R at boot time does not appear to generate
	>any extra debugging information for the SCSI probing.

	>Since my CDROM is IDE and my hard drive is SCSI, is plan 9 perhaps
	>finding the CDROM first and assuming my hard drive must be
	>IDE also?

No, that shouldn't matter.

	>The CDROM can be removed from the system, but there is no way
	>to disable the IDE controller on the motherboard. Setting
	>boot order in the BIOS setup and specifying the SCSI hard drive
	>did not help.

None of those things should make any difference either.


	>Any suggestions other than finding an IDE hard drive and connecting
	>it in place of the CDROM?

It's difficult to debug this at a distance without a working system.
Hooking an ATA drive up to get Plan 9 running might be an easier way to
debug the problem (hook it up to the primary IDE channel to make your
life easier).

Also, as was mentioned in another posting, the distributed bootstraps
don't deal with booting from SCSI discs; that should be in the next update.

--jim

Re: [9fans] Compaq Prof. Wkstn. 5000 and Plan 9

[okamoto]

Thanks Jim and Russ.

I tried old Neptune chipset and dual Pen90(^_^) with scsi card with
NCR53C870 chip.  In this case, scsi disks were recognized and made
file system happily.   (unfortunately, it didn't boot up. :-))

Kenji

Re: [9fans] Compaq Prof. Wkstn. 5000 and Plan 9

[Russ Cox]

  The pcdsik file in /sys/src/9/pc does not include scsi disks as bootable
  devices:  such that

  boot boot #S/sdC0/
	il
	local

This is okay -- if you boot from sdC1!9fat!9pcdisk
(say), the kernel mungs the name to come up with
local!#S/sdC1/fs as a boot name.  Or you can use
a bootargs=local!#S/sdC1/fs line in your plan9.ini.

As Jim pointed out, what you're running into is
that 9load(8) doesn't handle SCSI devices, and
this will be fixed in the next update.

Russ

Re: [9fans] Compaq Prof. Wkstn. 5000 and Plan 9

[okamoto]

>Any suggestions other than finding an IDE hard drive and connecting
>it in place of the CDROM?

I've been also in the similar trouble on scsi disks.
In my case, fortunately, I could make kfs on the scisi disk, but
not be able to boot from it.

Then, I looked into the script files under /bin/dist, and found a manual
way to mount the kfs to my virtual namespace.  Such that

disk/prep -p /dev/sd00/plan9 > /dev/sd00/ctl
disk/kfs -nsd00 -f /dev/sd00/fs
mount -c /srv/kfs.sd00 /n/kfs

and found that WE CAN NEVER BOOT FROM SCSI DISK!

The pcdsik file in /sys/src/9/pc does not include scsi disks as bootable
devices:  such that

......
boot boot #S/sdC0/
	il
	local


Kenji

[9fans] Compaq Prof. Wkstn. 5000 and Plan 9

[technofiend]

I have a Compaq 5000 Professional Workstation with dual Pentium
Pro II CPUs and internal SCSI and IDE adaptors.

Solaris 8 installation proved problematic because Solaris could
not see my SCSI drive despite DOS and Windows 98 doing so.

Now it seems Plan 9 has the same problem.  Using Compaq's
inspect, it appeared the IDE controller was IRQ 15, and
the Network, SCSI controller and Matrox all shared IRQ 11.

Fiddling with things, I managed to get all devices onto seperate
IRQs, but pickdisk still fails with "No disk devices were found
on your system."

Plan 9 appears to recognise the controller because it prints
dev A0 config 85C0 capabilities 0F00 mwdma 0103 dma 00000001 rwm 0
sd53c8xx: SYM53C875 rev. 0x03 intr=10 command=2000157
at boot time, and also "sd53c8xx: differential mode set" 16 times,
suggesting once for each target since it is a wide controller.

I have set debug=1 in the plan9.ini as the troubleshooting manual
suggests, but it didn't help much.

Pressing Control-R at boot time does not appear to generate
any extra debugging information for the SCSI probing.

Since my CDROM is IDE and my hard drive is SCSI, is plan 9 perhaps
finding the CDROM first and assuming my hard drive must be
IDE also?

The CDROM can be removed from the system, but there is no way
to disable the IDE controller on the motherboard. Setting
boot order in the BIOS setup and specifying the SCSI hard drive
did not help.


Any suggestions other than finding an IDE hard drive and connecting
it in place of the CDROM?




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