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More: IO Mapping 

Forum: PCMCIA Installation and Configuration Issues
Re: Question: Partial card functionality, memory port probs? (Ben hoyt)
Re: Maybe an IO port issue? (David Hinds)
Date: 2000, Feb 28
From: Ben hoyt <ben@spectrumwireless.net>

OK, here is the info that I used to (in my mind) eliminate the possibility of an IO overlap, other than bugging the HW manufacturer. I may have missed something, so here it is: 

swlr# cat interrupts ioports
           CPU0
  0:   25356934          XT-PIC  timer
  1:          0          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  4:       2107          XT-PIC  serial
  8:          2          XT-PIC  rtc
 11:      30250          XT-PIC  SMC9194
 13:          0          XT-PIC  fpu
NMI:          0
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
02f8-02ff : serial(auto)
0300-030f : SMC9194
03d4-03d5 : cga
03f8-03ff : serial(auto)
swlr# insmod /lib/modules/pcmcia_core.o;insmod /lib/modules/i82365.o ignore=1
swlr# insmod /lib/modules/ds.o
swlr# cat interrupts ioports
           CPU0
  0:   25364560          XT-PIC  timer
  1:          0          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  4:       2107          XT-PIC  serial
  8:          2          XT-PIC  rtc
 11:      30697          XT-PIC  SMC9194
 13:          0          XT-PIC  fpu
NMI:          0
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
02f8-02ff : serial(auto)
0300-030f : SMC9194
03d4-03d5 : cga
03e0-03e1 : i82365
03f8-03ff : serial(auto)
swlr# # Inserting Aironet modules.  You can find them in the 2.3.newest kernel, I'm using the 2.2.13 version.

swlr# cat interrupts
           CPU0
  0:   25374716          XT-PIC  timer
  1:          0          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  3:          0          XT-PIC  aironet4500_cs
  4:       2107          XT-PIC  serial
  8:          2          XT-PIC  rtc
 11:      31301          XT-PIC  SMC9194
 13:          0          XT-PIC  fpu
NMI:          0
swlr# cat ioports
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-008f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : fpu
0100-013f : aironet4500_cs
02f8-02ff : serial(auto)
0300-030f : SMC9194
03d4-03d5 : cga
03e0-03e1 : i82365
03f8-03ff : serial(auto)

As you can see, I'm running at IRQ 3, IO 0x100. This is on my 'special' hardware. Now, the stats from a different HW platform running 2.0.37, and a slightly older pcmcia-cs: 

dts-dtn-rtr# cat interrupts ioports
 0: 1026540671   timer
 1:          8   keyboard
 2:          0   cascade
 3: 2552978658   aironet4500_cs
 4:         10 + serial
 8:          0 + rtc
11: 2409110548   eth0
13:          0   math error
15:          2   i82365
0000-001f : dma1
0020-003f : pic1
0040-005f : timer
0060-006f : keyboard
0070-007f : rtc
0080-009f : dma page reg
00a0-00bf : pic2
00c0-00df : dma2
00f0-00ff : npu
0100-013f : aironet4500_cs
03b0-03bb : mda
03bf-03bf : mda
03e0-03e1 : i82365
03f8-03ff : serial(set)
ff80-ff9f : eth0

As you can see CS assigns the HW the same IO/IRQ for both platforms. Both platforms have been verified by the HW manufacturer to have no IO conflicts at these addresses.

I'll let you guys puzzle over that. In the meantime, I'm going to upgrade to kernel 2.3.latest and see what happens re: these cards.

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Not a kernel issue; maybe timing?

Re: More: IO Mapping (Ben hoyt)
Date: 2000, Feb 28
From: David Hinds <dhinds@pcmcia.sourceforge.org> 

Ok, I'm a little confused about exactly what worked and what does not
work.  It sounds like the 3c589 card worked on this box with [some
earlier driver version].  I'd like to see the kernel messages from
that case.  And both cards work on another box, but you don't really
say how that box is different from the one that doesn't work.

As for the potential for an IO overlap, you cannot tell much by
looking at /proc.  Those files show what resources Linux knows are in
use.  But you can have a conflict with a device Linux doesn't know
about.  Excluding resources in /etc/pcmcia/config.opts is an easy
thing to try.  I suspect it won't help, but you should try.

I don't believe that changing kernels is likely to make any difference
at all.

Another thing to try is to load the pcmcia_core module with an option
like "io_speed=300" to change the timing of IO accesses.

-- Dave

Clarification

Re: Not a kernel issue; maybe timing? (David Hinds)
Date: 2000, Feb 28
From: Ben hoyt <ben@spectrumwireless.net>

To clarify what does and doesn't work:

With an older kernel and pcmcia-cs, 3c589 was functioning on my 'new' hardware. With 2.2.12 and pcmcia-cs 3.1.10, 3c589 does not work. The Aironet driver that worked on all kernel/pcmcia versions on my 'old' hardware has not worked yet on the 'new' hardware, regardless of software versions.

I've tried excluding, no luck.

I just tested pcmcia_core with different io_speed parameters, including 300, no help.

I'm going to revert back to something that does work on my new hardware - an older kernel and pcmcia-cs. Then, I'll move up from there, and hopefully identify if it is the different kernel version, or pcmcia-cs version that is making the difference.

IO Mapping

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