[Xenomai-help] IRQs and PCIs

[Xenomai-help] IRQs and PCIs

[Leopold Palomo Avellaneda]

[-- Attachment #1: Type: text/plain, Size: 1320 bytes --]

Hi,

maybe is an off toppic, but probably some like me has this issue. I have a 
mainboard with several PCI and two PCIe. I can configure the PCIe to use with 
rtnet and xenomai without any important problem.

The mobo has an eth and firewire and vga incorporated, so the pci are free. 
But now, I would like to add a pci network card. I have three:
- on for our environtment
- two for the rtnet (two robot controlers)

and then I would like to have 4
- one for another network

The problem that I have and I don't know how to solve is that the new pci 
network card share an irq with another device. So, in my case, I have  
problems with this. With rtnet, I solve this using pcie devices, but now I 
cannot.

I have configure the xenomai kernel following the FAQ, and I have tested to 
assign an IRQ in the BIOS. But I have not be able to make the interface 
works. I have delays in the interface, and google says ;-) that is a problems 
of sharing IRQs with the eth. And I believe in that ...

So, thinking that I would like to use this eth in a normal environment (not 
rtnet,) but in a box using xenomai, some of you have some "magical" idea, 
kernel parameter, etc to solve this issue?

Thanks in advance,

Regards,

Leo


-- 
--
Linux User 152692
PGP: 0xF944807E
Catalonia

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 189 bytes --]

Re: [Xenomai-help] IRQs and PCIs

[Gilles Chanteperdrix]

Leopold Palomo Avellaneda wrote:
> Hi,
> 
> maybe is an off toppic, but probably some like me has this issue. I have a 
> mainboard with several PCI and two PCIe. I can configure the PCIe to use with 
> rtnet and xenomai without any important problem.
> 
> The mobo has an eth and firewire and vga incorporated, so the pci are free. 
> But now, I would like to add a pci network card. I have three:
> - on for our environtment
> - two for the rtnet (two robot controlers)
> 
> and then I would like to have 4
> - one for another network
> 
> The problem that I have and I don't know how to solve is that the new pci 
> network card share an irq with another device. So, in my case, I have  
> problems with this. With rtnet, I solve this using pcie devices, but now I 
> cannot.
> 
> I have configure the xenomai kernel following the FAQ, and I have tested to 
> assign an IRQ in the BIOS. But I have not be able to make the interface 
> works. I have delays in the interface, and google says ;-) that is a problems 
> of sharing IRQs with the eth. And I believe in that ...
> 
> So, thinking that I would like to use this eth in a normal environment (not 
> rtnet,) but in a box using xenomai, some of you have some "magical" idea, 
> kernel parameter, etc to solve this issue?
> 
> Thanks in advance,

Well, maybe you can configure the cards controlled by rtnet to actually
share their irq ? Maybe this would free irqs for other cards ?

-- 


					    Gilles.

Re: [Xenomai-help] IRQs and PCIs

[Leopold Palomo Avellaneda]

[-- Attachment #1: Type: text/plain, Size: 1875 bytes --]

A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
> Leopold Palomo Avellaneda wrote:
> > Hi,
> >
> > maybe is an off toppic, but probably some like me has this issue. I have
> > a mainboard with several PCI and two PCIe. I can configure the PCIe to
> > use with rtnet and xenomai without any important problem.
> >
> > The mobo has an eth and firewire and vga incorporated, so the pci are
> > free. But now, I would like to add a pci network card. I have three:
> > - on for our environtment
> > - two for the rtnet (two robot controlers)
> >
> > and then I would like to have 4
> > - one for another network
> >
> > The problem that I have and I don't know how to solve is that the new pci
> > network card share an irq with another device. So, in my case, I have
> > problems with this. With rtnet, I solve this using pcie devices, but now
> > I cannot.
> >
> > I have configure the xenomai kernel following the FAQ, and I have tested
> > to assign an IRQ in the BIOS. But I have not be able to make the
> > interface works. I have delays in the interface, and google says ;-) that
> > is a problems of sharing IRQs with the eth. And I believe in that ...
> >
> > So, thinking that I would like to use this eth in a normal environment
> > (not rtnet,) but in a box using xenomai, some of you have some "magical"
> > idea, kernel parameter, etc to solve this issue?
> >
> > Thanks in advance,
>
> Well, maybe you can configure the cards controlled by rtnet to actually
> share their irq ? Maybe this would free irqs for other cards ?

it's no problem the rtnet card. I bought two pci-e and they have the MSI and 
irq 1275. It's the normal pci.

Today I have done it work with the irqpoll option. But I don't know if this 
could make problems to the realtime.

Leo

-- 
--
Linux User 152692
PGP: 0xF944807E
Catalonia

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 189 bytes --]

Re: [Xenomai-help] IRQs and PCIs

[Gilles Chanteperdrix]

Leopold Palomo Avellaneda wrote:
> A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
>> Leopold Palomo Avellaneda wrote:
>>> Hi,
>>>
>>> maybe is an off toppic, but probably some like me has this issue. I have
>>> a mainboard with several PCI and two PCIe. I can configure the PCIe to
>>> use with rtnet and xenomai without any important problem.
>>>
>>> The mobo has an eth and firewire and vga incorporated, so the pci are
>>> free. But now, I would like to add a pci network card. I have three:
>>> - on for our environtment
>>> - two for the rtnet (two robot controlers)
>>>
>>> and then I would like to have 4
>>> - one for another network
>>>
>>> The problem that I have and I don't know how to solve is that the new pci
>>> network card share an irq with another device. So, in my case, I have
>>> problems with this. With rtnet, I solve this using pcie devices, but now
>>> I cannot.
>>>
>>> I have configure the xenomai kernel following the FAQ, and I have tested
>>> to assign an IRQ in the BIOS. But I have not be able to make the
>>> interface works. I have delays in the interface, and google says ;-) that
>>> is a problems of sharing IRQs with the eth. And I believe in that ...
>>>
>>> So, thinking that I would like to use this eth in a normal environment
>>> (not rtnet,) but in a box using xenomai, some of you have some "magical"
>>> idea, kernel parameter, etc to solve this issue?
>>>
>>> Thanks in advance,
>> Well, maybe you can configure the cards controlled by rtnet to actually
>> share their irq ? Maybe this would free irqs for other cards ?
> 
> it's no problem the rtnet card. I bought two pci-e and they have the MSI and 
> irq 1275. It's the normal pci.
> 
> Today I have done it work with the irqpoll option. But I don't know if this 
> could make problems to the realtime.

If you are not talking about a card use by rtnet, then there is no irq
sharing problem.

-- 


					    Gilles.

Re: [Xenomai-help] IRQs and PCIs

[Leopold Palomo Avellaneda]

[-- Attachment #1: Type: text/plain, Size: 2371 bytes --]

A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
> Leopold Palomo Avellaneda wrote:
> > A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
> >> Leopold Palomo Avellaneda wrote:
> >>> Hi,
> >>>
> >>> maybe is an off toppic, but probably some like me has this issue. I
> >>> have a mainboard with several PCI and two PCIe. I can configure the
> >>> PCIe to use with rtnet and xenomai without any important problem.
> >>>
> >>> The mobo has an eth and firewire and vga incorporated, so the pci are
> >>> free. But now, I would like to add a pci network card. I have three:
> >>> - on for our environtment
> >>> - two for the rtnet (two robot controlers)
> >>>
> >>> and then I would like to have 4
> >>> - one for another network
> >>>
> >>> The problem that I have and I don't know how to solve is that the new
> >>> pci network card share an irq with another device. So, in my case, I
> >>> have problems with this. With rtnet, I solve this using pcie devices,
> >>> but now I cannot.
> >>>
> >>> I have configure the xenomai kernel following the FAQ, and I have
> >>> tested to assign an IRQ in the BIOS. But I have not be able to make the
> >>> interface works. I have delays in the interface, and google says ;-)
> >>> that is a problems of sharing IRQs with the eth. And I believe in that
> >>> ...
> >>>
> >>> So, thinking that I would like to use this eth in a normal environment
> >>> (not rtnet,) but in a box using xenomai, some of you have some
> >>> "magical" idea, kernel parameter, etc to solve this issue?
> >>>
> >>> Thanks in advance,
> >>
> >> Well, maybe you can configure the cards controlled by rtnet to actually
> >> share their irq ? Maybe this would free irqs for other cards ?
> >
> > it's no problem the rtnet card. I bought two pci-e and they have the MSI
> > and irq 1275. It's the normal pci.
> >
> > Today I have done it work with the irqpoll option. But I don't know if
> > this could make problems to the realtime.
>
> If you are not talking about a card use by rtnet, then there is no irq
> sharing problem.


nops, because the card that use rtnet has its own module, not a "normal" 
kernel module a rtnet. But, what happens if I have a card, that uses comedi 
and rtdm and I need the irqpoll parameter?

Leo

-- 
--
Linux User 152692
PGP: 0xF944807E
Catalonia

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 189 bytes --]

Re: [Xenomai-help] IRQs and PCIs

[Gilles Chanteperdrix]

Leopold Palomo Avellaneda wrote:
> A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
>> Leopold Palomo Avellaneda wrote:
>>> A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
>>>> Leopold Palomo Avellaneda wrote:
>>>>> Hi,
>>>>>
>>>>> maybe is an off toppic, but probably some like me has this issue. I
>>>>> have a mainboard with several PCI and two PCIe. I can configure the
>>>>> PCIe to use with rtnet and xenomai without any important problem.
>>>>>
>>>>> The mobo has an eth and firewire and vga incorporated, so the pci are
>>>>> free. But now, I would like to add a pci network card. I have three:
>>>>> - on for our environtment
>>>>> - two for the rtnet (two robot controlers)
>>>>>
>>>>> and then I would like to have 4
>>>>> - one for another network
>>>>>
>>>>> The problem that I have and I don't know how to solve is that the new
>>>>> pci network card share an irq with another device. So, in my case, I
>>>>> have problems with this. With rtnet, I solve this using pcie devices,
>>>>> but now I cannot.
>>>>>
>>>>> I have configure the xenomai kernel following the FAQ, and I have
>>>>> tested to assign an IRQ in the BIOS. But I have not be able to make the
>>>>> interface works. I have delays in the interface, and google says ;-)
>>>>> that is a problems of sharing IRQs with the eth. And I believe in that
>>>>> ...
>>>>>
>>>>> So, thinking that I would like to use this eth in a normal environment
>>>>> (not rtnet,) but in a box using xenomai, some of you have some
>>>>> "magical" idea, kernel parameter, etc to solve this issue?
>>>>>
>>>>> Thanks in advance,
>>>> Well, maybe you can configure the cards controlled by rtnet to actually
>>>> share their irq ? Maybe this would free irqs for other cards ?
>>> it's no problem the rtnet card. I bought two pci-e and they have the MSI
>>> and irq 1275. It's the normal pci.
>>>
>>> Today I have done it work with the irqpoll option. But I don't know if
>>> this could make problems to the realtime.
>> If you are not talking about a card use by rtnet, then there is no irq
>> sharing problem.
> 
> 
> nops, because the card that use rtnet has its own module, not a "normal" 
> kernel module a rtnet. But, what happens if I have a card, that uses comedi 
> and rtdm and I need the irqpoll parameter?

What I meant is that you can share IRQs between real-time drivers, you
can share IRQs between non real-time drivers, but you can not share IRQs
between real-time and non real-time drivers.

-- 


					    Gilles.

Re: [Xenomai-help] IRQs and PCIs

[Leopold Palomo Avellaneda]

[-- Attachment #1: Type: text/plain, Size: 2808 bytes --]

A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
> Leopold Palomo Avellaneda wrote:
> > A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
> >> Leopold Palomo Avellaneda wrote:
> >>> A Dimarts 01 Juliol 2008, Gilles Chanteperdrix va escriure:
> >>>> Leopold Palomo Avellaneda wrote:
> >>>>> Hi,
> >>>>>
> >>>>> maybe is an off toppic, but probably some like me has this issue. I
> >>>>> have a mainboard with several PCI and two PCIe. I can configure the
> >>>>> PCIe to use with rtnet and xenomai without any important problem.
> >>>>>
> >>>>> The mobo has an eth and firewire and vga incorporated, so the pci are
> >>>>> free. But now, I would like to add a pci network card. I have three:
> >>>>> - on for our environtment
> >>>>> - two for the rtnet (two robot controlers)
> >>>>>
> >>>>> and then I would like to have 4
> >>>>> - one for another network
> >>>>>
> >>>>> The problem that I have and I don't know how to solve is that the new
> >>>>> pci network card share an irq with another device. So, in my case, I
> >>>>> have problems with this. With rtnet, I solve this using pcie devices,
> >>>>> but now I cannot.
> >>>>>
> >>>>> I have configure the xenomai kernel following the FAQ, and I have
> >>>>> tested to assign an IRQ in the BIOS. But I have not be able to make
> >>>>> the interface works. I have delays in the interface, and google says
> >>>>> ;-) that is a problems of sharing IRQs with the eth. And I believe in
> >>>>> that ...
> >>>>>
> >>>>> So, thinking that I would like to use this eth in a normal
> >>>>> environment (not rtnet,) but in a box using xenomai, some of you have
> >>>>> some "magical" idea, kernel parameter, etc to solve this issue?
> >>>>>
> >>>>> Thanks in advance,
> >>>>
> >>>> Well, maybe you can configure the cards controlled by rtnet to
> >>>> actually share their irq ? Maybe this would free irqs for other cards
> >>>> ?
> >>>
> >>> it's no problem the rtnet card. I bought two pci-e and they have the
> >>> MSI and irq 1275. It's the normal pci.
> >>>
> >>> Today I have done it work with the irqpoll option. But I don't know if
> >>> this could make problems to the realtime.
> >>
> >> If you are not talking about a card use by rtnet, then there is no irq
> >> sharing problem.
> >
> > nops, because the card that use rtnet has its own module, not a "normal"
> > kernel module a rtnet. But, what happens if I have a card, that uses
> > comedi and rtdm and I need the irqpoll parameter?
>
> What I meant is that you can share IRQs between real-time drivers, you
> can share IRQs between non real-time drivers, but you can not share IRQs
> between real-time and non real-time drivers.

ok, I see. Thanks.


Leo
-- 
--
Linux User 152692
PGP: 0xF944807E
Catalonia

[-- Attachment #2: This is a digitally signed message part. --]
[-- Type: application/pgp-signature, Size: 189 bytes --]