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pcmcia scsi irq

Posted on 1999-07-09
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Last Modified: 2010-03-18
Since I upgraded to RH6.0, suddenly my pcmcia has a different irq=3, which clashes with my ttyS1. I could not find a configuration file to set the irq for the scsi controller. Consulted the howtos but the only option mentioned is passing parameters at boot time. I would rather have a text file configuration if possible.
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If there is a text file to configure the irq PORT address etc, please let me know, with some example if possible
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MY dmesg output of bootup is included here for completeness.
IO port probe 0x1000-0x17ff; excluding 0x1220-0x122f 0x1278-0x127f 0x1300-0x131f 0x1380-0x139f 0x1620-0x162f 0x1678-0x167f 0x1700-0x171f 0x1780-0x179fcs; IO port probe 0x0100-0x04ff; excluding 0x220-0x22f 0x278-0x27f 0x378-0x39f 0x4d0-0x4d7cs; IO port probe 0x0a00-0x0aff; excluding 0xa20-0xa2f 0xa78-0xa7fcs; memory probe 0x0d0000-0x0dffff; clean.aha152x; processing commandline; okaha152x; BIOS test; passed, detected 1 controller9s0aha152x0; vital data; PORTBASE=0x340, IRQ=3, SCSI ID=7, reconnect=enabled, parity=enabled, synchronous=disabled, delay=100, extended translation=disabledaha152x; trying software interrupt, ok.

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Question by:dryzone
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Expert Comment

by:mauricetokyo
ID: 1585654
The file to set the configuration for the PCMCIA is

/etc/sysconfig/pcmcia

Try to set up
irq_list=9,10,11 or whatever there to tell it which IRQ to use.

For questions please don't hesitate to contact me.

Maurice
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Author Comment

by:dryzone
ID: 1585655
The entry in the config file did not solve the problem. After booting, the irq was still 3
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Author Comment

by:dryzone
ID: 1585656
What tells the kernel to take irq=3 !! if it is not in the config file. This is crazy -- almost windoze.
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Accepted Solution

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mauricetokyo earned 100 total points
ID: 1585657
The BIOS tells it that it is on IRQ 3. You can change the settings in BIOS.

The /etc/sysconfig/pcmcia tells it how to utilise the IRQs.

MOshe
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Author Comment

by:dryzone
ID: 1585658
Thanks for the answer - but no, The bios can be on pnp or manual. For pnp I get irq 3, For nanual,I set it to ISA for everything but the scusicard. I then leave open irqs 10 and 11, which are not taken at all in order that linux can probe and at least use a software interrupt there. The software interrupt also fails as you can see from my initial posting since it does not say using irq11 etc. So this must be a Linux probe/config file problem. The bios is not guilty. I also disabled com2 at irq3 in order to let Linux have its stubborn way but to no avail. There is nothing wrong with the hardware. It runs as is on a dual boot on win 95. Maybe it is time to switch back to windows? At least what you expect from Linux is that everything is configurable -- which seems to be less the truth with RH6.0 (5.2 served me flawlessly). Reinstalls dont work, upgrades trashed my entire network setup--6.0 is really crap if you ask me.
But, keep on trying. Your help is appreciated.

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Expert Comment

by:mauricetokyo
ID: 1585659
Well, yes, you are right. RedHat 5.1 or 5.2 worked much better than 6.0 . The reason is that 6.0 sports a new kernel, the 2.2.x series, which make a lot of problems.

In my configurations, I had to change the PCMCIA setting from 11 to 3 to make it work. So, I changed the sound from 10 to 5 in the BIOS and also told it to put the mouse on 11.

The, in linux I told it to scan only 3, 8 and 9 for IRQs during boot. That worked and my network is now up and running.

Maybe reading the PCMCIA will help. It certainly helped me.

Be well

Moshe
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Author Comment

by:dryzone
ID: 1585660
The pcmcia mini howto and howto is real sloppy. I actually found more help in A Rubini's book in an indirect way. I think anybody can improve on those howtos. It is written without any system initial conditions in mind.
All I need is to be able to set the irq to use in a text configuration file somewhere, without it automatically being chosen for me. irq=3 is a real stupid choice and should be seen as a violation by the kernel since serial ports usually use that.
If you have any more suggestions please inform me.
----------------------------------------------------
I think that this is a typical problem caused by some silly automation or detect  code somewhere -- exactly the thing that drove me away from ms.
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