[ltp] 600E: serial + IR + sound + PC-modem = IRQ shortage

[linux-thinkpad@www.bm-soft.com]

Mark.

It seems that I'm using the same machine like you and got most of
the stuff you mention below working (I different network and
modem cards though).

On 18-May-00 linux-thinkpad@merctech.com wrote:
> 
> I'm trying to set up a 600E (RedHat 6.2, kernel 2.2.14-5.0,
> PCMCIA utils 
> 3.1.14) with the following active:
> 
>       Serial A (for DTE connection as a serial console)
>       Infrared (for Pilot infrared sync)

 - If you need more help for the IR port, contact me (post to
   this list, so others may use the information). I got the FIR
   driver working nicely (high speeds not tested yet).

>       Parallel (for printing)
>       10/100Mb 3Com 3CCFE575B/3CXFE575B Fast EtherLink XL (work
> Ethernet)

 - I use an old 10Mb 3com 3C589C
 
>       3Com/Megahertz 3CXEM556 Ethernet/Modem (modem use only)

 - I use a noname modem card (identifies itself as Lucent Venus
   56k) - no surprise

>       Alsa sound (for fun)

 - I use the sound driver distributed with the standard 2.2.14
   kernel which works fine but doesnt survive APM suspend/resume.
   Note that Alsa is said to have the same problem. However, I
   created a patch for the standard kernel driver (not Alsa)
   which fixes this (and other things). It can be found at
      http://www-hft.ee.TU-Berlin.DE/~strauman

   dont forget to exclude the sound (and midi, if enabled)
   IRQ and port address in /etc/pcmcia/config.opts.

> Sound works.

  Does Alsa now support APM (suspend/resume)? I tried an older
  version...

> 
> When I insert the PCMCIA combo card, I get the "high/low"
> tones, and the
> following errors are logged:
>       kernel: 3c589_cs: RequestIRQ: Resource in use
>       cardmgr[428]: get dev info on socket 1 failed: Resource
> temporarily una
> vailable
> 
> I know that the card works (it was fine until I enabled the IR
> port). I
> haven't found a way to force it to use another IRQ.
> 
> Does anyone have any suggestions?

I guess from the details listed in your posting that the sound
card uses IRQ 10 (for midi) but you excluded IRQ 9 (the standard
setup) in /etc/pcmcia/config.opts.

If you dont really need the midi port irq (the FM synthesizer
does not) you may even consider disable it using PS2.EXE.

Regards, Till


PS: you might be interested in my TrackPoint driver which can be
found on my homepage as well.

> 
> ----------------The Details-----------The Details---------The
> Details-----
> 
> According to PS2.EXE, the IRQ assignments are:
>       Serial A: 4
>       IR: 3
> 
> /proc/interrupts
>            CPU0       
>       0:    2798774          XT-PIC  timer
>       1:      28406          XT-PIC  keyboard
>       2:          0          XT-PIC  cascade
>       5:          4          XT-PIC  CS4236+ - MPU401
>       8:    6279923          XT-PIC  rtc
>       10:     212417          XT-PIC  CS4236+
>       11:     260202          XT-PIC  i82365, eth0
>       12:     801107          XT-PIC  PS/2 Mouse
>       13:          1          XT-PIC  fpu
>       14:     432376          XT-PIC  ide0
>       15:      34797          XT-PIC  ide1
>       NMI:          0
> 
> /proc/ioports
> 
> 
>       # Resources we should not use, even if they appear to be
> available
>       #
>       # First built-in serial port
>       exclude irq 4
>       exclude port 0x3f8-0x3ff
>       # Second built-in serial port
>       exclude irq 3
>       exclude port 0x2f8-0x2ff
>       # First built-in parallel port
>       exclude irq 7
>       # PS/2 Mouse controller port, comment this out if you
don't
> have a PS/2
>       # based mouse
>       exclude irq 12
>       
>       # Sound
>       exclude irq 5
>       exclude 0x230-0x233
>       exclude 0x530-0x537
>       exclude irq 9
>       # Serial config for pcmcia modem
>       module "serial_cs"
> 
> 
> dmesg|egrep -i "ser|irq"
>       Memory: 159608k/162816k available (888k kernel code, 416k
> reserved, 186
> 0k 
> data, 44k init, 0k bigmem)
>       PIIX4: not 100% native mode: will probe irqs later
>       ide0 at 0x1f0-0x1f7,0x3f6 on irq 14
>       ide1 at 0x170-0x177,0x376 on irq 15
>       Serial driver version 4.27 with MANY_PORTS enabled
>       ttyS00 at 0x03f8 (irq = 4) is a 16550A
>       ttyS01 at 0x02f8 (irq = 3) is a 16550A
>       Linux PCMCIA Card Services 3.1.14
>         00:02.0 -> irq 11
>         00:02.1 -> irq 11
>           host opts [0]: [ring] [isa irq] [pci irq 11] [lat
168/176]
> [bus 2/4
> ]
>           host opts [1]: [ring] [isa irq] [pci irq 11] [lat
168/176]
> [bus 5/7
> ]
>           ISA irqs (scanned) = 5,9 PCI status changes
>       ppuser: User-space parallel port driver
>       eth0: 3Com 3CCFE575 Cyclone CardBus at 0x400, 
> 00:10:4b:f1:78:b1, IRQ 1
> 1
>       3c589_cs: RequestIRQ: Resource in use
> 
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