[linux-dvb] Re: is interrupt sharing possible?

[Emil Naepflein <Emil.Naepflein@philosys.de>]

On Thu, 27 Dec 2001 10:54:00 +0100, Jonas Meyer <shitse@web.de> wrote:

> my box is really stuffed with lots of peripherals.now my problem is that my 
> dvb card shared it's irq with one of my nics and it seems that was the reason 
> why my system keeped hanging. are there chances that i can put another pci 
> card to the slot that the nic was in and still leave my dvb working?if not 
> should i be able to change some bios settings to activate another interrupt 
> for the dvb?i'm having pnpos set to yes and let most ressource handling be 
> done by linux.i'm using kernel-2.4.16 with devfs(and some patches)so i guess 
> there are lots of possible reasons why it doesn'T work.i'm happy for every 
> hint.

This is Linux 2.4.4 ona Gigabyte 7ZXR3.0:

/proc/pci:
PCI devices found:
  Bus  0, device   0, function  0:
    Host bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133] (rev
3).
      Master Capable.  Latency=8.  
      Prefetchable 32 bit memory at 0xe0000000 [0xe3ffffff].
  Bus  0, device   1, function  0:
    PCI bridge: VIA Technologies, Inc. VT8363/8365 [KT133/KM133 AGP]
(rev 0).
      Master Capable.  No bursts.  Min Gnt=8.
  Bus  0, device   7, function  0:
    ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South]
(rev 64).
  Bus  0, device   7, function  1:
    IDE interface: VIA Technologies, Inc. Bus Master IDE (rev 6).
      Master Capable.  Latency=32.  
      I/O at 0xffa0 [0xffaf].
  Bus  0, device   7, function  3:
    USB Controller: VIA Technologies, Inc. UHCI USB (#2) (rev 22).
      IRQ 10.
      Master Capable.  Latency=64.  
      I/O at 0xc000 [0xc01f].
  Bus  0, device   7, function  2:
    USB Controller: VIA Technologies, Inc. UHCI USB (rev 22).
      IRQ 10.
      Master Capable.  Latency=64.  
      I/O at 0xbc00 [0xbc1f].
  Bus  0, device   7, function  4:
    SMBus: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 64).
  Bus  0, device  15, function  0:
    Multimedia controller: Philips Semiconductors SAA7146 (#4) (rev 1).
      IRQ 10.
      Master Capable.  Latency=64.  Min Gnt=15.Max Lat=38.
      Non-prefetchable 32 bit memory at 0xdffbfc00 [0xdffbfdff].
  Bus  0, device  12, function  0:
    Multimedia controller: Philips Semiconductors SAA7146 (#3) (rev 1).
      IRQ 11.
      Master Capable.  Latency=64.  Min Gnt=15.Max Lat=38.
      Non-prefetchable 32 bit memory at 0xdffbfa00 [0xdffbfbff].
  Bus  0, device  10, function  0:
    Multimedia controller: Philips Semiconductors SAA7146 (#2) (rev 1).
      IRQ 9.
      Master Capable.  Latency=64.  Min Gnt=15.Max Lat=38.
      Non-prefetchable 32 bit memory at 0xdffbf800 [0xdffbf9ff].
  Bus  0, device   9, function  0:
    Multimedia controller: Philips Semiconductors SAA7146 (rev 1).
      IRQ 5.
      Master Capable.  Latency=64.  Min Gnt=15.Max Lat=38.
      Non-prefetchable 32 bit memory at 0xdffbf600 [0xdffbf7ff].
  Bus  0, device  14, function  0:
    Multimedia audio controller: Ensoniq 5880 AudioPCI (rev 2).
      IRQ 9.
      Master Capable.  Latency=64.  Min Gnt=12.Max Lat=128.
      I/O at 0xc400 [0xc43f].
  Bus  0, device  16, function  0:
    Unknown mass storage controller: Promise Technology, Inc. 20265 (rev
2).
      IRQ 10.
      Master Capable.  Latency=64.  
      I/O at 0xdc00 [0xdc07].
      I/O at 0xd800 [0xd803].
      I/O at 0xd400 [0xd407].
      I/O at 0xd000 [0xd003].
      I/O at 0xcc00 [0xcc3f].
      Non-prefetchable 32 bit memory at 0xdffe0000 [0xdfffffff].
  Bus  0, device  17, function  0:
    Ethernet controller: 3Com Corporation 3c905C-TX [Fast Etherlink]
(rev 116).
      IRQ 9.
      Master Capable.  Latency=64.  Min Gnt=10.Max Lat=10.
      I/O at 0xc800 [0xc87f].
      Non-prefetchable 32 bit memory at 0xdffbff80 [0xdffbffff].
  Bus  1, device   0, function  0:
    VGA compatible controller: nVidia Corporation NV11 (rev 161).
      IRQ 11.
      Master Capable.  Latency=64.  Min Gnt=5.Max Lat=1.
      Non-prefetchable 32 bit memory at 0xde000000 [0xdeffffff].
      Prefetchable 32 bit memory at 0xd0000000 [0xd7ffffff].

           CPU0       
  0:  240197422          XT-PIC  timer
  1:        236          XT-PIC  keyboard
  2:          0          XT-PIC  cascade
  3:    3055614          XT-PIC  lirc_serial
  5: 1113847908          XT-PIC  saa7146(4)
  9:  739211007          XT-PIC  eth0, saa7146(3)
 10:  605700660          XT-PIC  ide2, ide3, saa7146(1)
 11:  757973500          XT-PIC  saa7146(2)
 14:    4875175          XT-PIC  ide0
 15:    1764504          XT-PIC  ide1
NMI:          0 
ERR:          0

Emil


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