[linux-dvb] cx88_wakeup 3 buffers handled (should be 1)

Simon Baxter linuxtv at nzbaxters.com
Fri May 20 11:15:35 CEST 2005


Mine looks similar to Toby's :
 more /proc/interrupts
           CPU0
  0:   12347635          XT-PIC  timer
  1:       4191          XT-PIC  i8042
  2:          0          XT-PIC  cascade
  3:         49          XT-PIC  serial
  7:          0          XT-PIC  parport0
  8:          1          XT-PIC  rtc
  9:          0          XT-PIC  acpi
 10:     439076          XT-PIC  VIA8237, ehci_hcd, eth0
 11:    2659401          XT-PIC  libata, uhci_hcd, uhci_hcd, uhci_hcd, 
uhci_hcd, ohci1394, via at pci:0000:01:00.0, cx88[0]
 12:     147578          XT-PIC  i8042
 15:      25000          XT-PIC  ide1
NMI:          0
ERR:          0

As an aside, when I try an rmmod cx88-dvb, I get 'disabled IRQ11' and I 
can't access the box from ssh, or the attached keyboard forcing me to hit 
the 'RESET' button (yikes!!!!)

It looks like 4,5 & 13,14 aren't being used.  Excuse my ignorance, but how 
do I shift some devices onto different interrupts???



DMESG also has some alarming messages in it :
ACPI: PCI Interrupt Routing Table [\_SB_.PCI0._PRT]
ACPI: PCI Interrupt Link [LNKA] (IRQs 3 4 6 7 10 11 12) *5
ACPI: PCI Interrupt Link [LNKB] (IRQs 3 4 6 7 10 *11 12)
ACPI: PCI Interrupt Link [LNKC] (IRQs 3 4 6 7 *10 11 12)
ACPI: PCI Interrupt Link [LNKD] (IRQs 3 4 6 7 10 *11 12)
ACPI: PCI Interrupt Link [LNKE] (IRQs 3 4 6 7 10 11 12) *0, disabled.
ACPI: PCI Interrupt Link [LNKF] (IRQs 3 4 6 7 10 11 12) *0, disabled.
ACPI: PCI Interrupt Link [LNK0] (IRQs 3 4 6 7 10 11 12) *0, disabled.
ACPI: PCI Interrupt Link [LNK1] (IRQs 3 4 6 7 10 11 12) *0, disabled.
ACPI: PCI Interrupt Link [ALKA] (IRQs 20) *11
ACPI: PCI Interrupt Link [ALKB] (IRQs *21)
ACPI: PCI Interrupt Link [ALKC] (IRQs *22)
ACPI: PCI Interrupt Link [ALKD] (IRQs *23), disabled.
<snip>
PCI: Using ACPI for IRQ routing
** PCI interrupts are no longer routed automatically.  If this
** causes a device to stop working, it is probably because the
** driver failed to call pci_enable_device().  As a temporary
** workaround, the "pci=routeirq" argument restores the old
** behavior.  If this argument makes the device work again,
** please email the output of "lspci" to bjorn.helgaas at hp.com
** so I can fix the driver.

----- Original Message ----- 
From: "Hamish Moffatt" <hamish at cloud.net.au>
To: <linux-dvb at linuxtv.org>
Sent: Friday, May 20, 2005 12:24 AM
Subject: Re: [linux-dvb] cx88_wakeup 3 buffers handled (should be 1)


> On Thu, May 19, 2005 at 11:33:15PM +0100, Toby Smith wrote:
>> From the original suggestions I've tried a few PCI re-arrangements, but
>> still end up with the Nova card on IRQ 5 which is a little loaded on my
>> system - sharing with the network card can't be an ideal situation.
>>
>> [root at marvin szap]# more /proc/interrupts
>>            CPU0
>>   0:     898097  timer
>>   1:        180  i8042
>>   2:          0  cascade
>>   4:       1348  VIA8233, uhci_hcd
>>   5:      64348  cx88[0], cx88[0], uhci_hcd, eth0, via at pci:0000:01:00.0
>
> It looks like you need ACPI and I/O APIC support active. This would add
> interrupts 16-23 probably and spread out the load. My complete list
> (nForce2, Geforce4 graphics, Atheros wifi, 3xDVB card, 1xextra sound 
> card):
>
> hamish at tv:~$ cat /proc/interrupts
>           CPU0
>  0:  203837872    IO-APIC-edge  timer
>  1:         11    IO-APIC-edge  i8042
>  3:      19741    IO-APIC-edge  lirc_serial
>  8:          4    IO-APIC-edge  rtc
>  9:          0   IO-APIC-level  acpi
> 12:        104    IO-APIC-edge  i8042
> 14:     374288    IO-APIC-edge  ide0
> 15:         89    IO-APIC-edge  ide1
> 16:   24383647   IO-APIC-level  cx88[1], cx88[1]
> 17:   16726965   IO-APIC-level  saa7146 (0)
> 18:    2344001   IO-APIC-level  libata, EMU10K1, ath0
> 19:   33496613   IO-APIC-level  cx88[0], cx88[0], nvidia
> 22:     103718   IO-APIC-level  NVidia nForce2
>
> There's still some sharing (SATA controller, sound card and wireless,
> plus one DVB card and Geforce4) but that hasn't been an issue for me.
>
> You may have to upgrade to kernel 2.6. Not a bad idea anyway..
>
>
> Hamish
> -- 
> Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>
>
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>
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