PCI IO memory resource allocation

PCI IO memory resource allocation

[J.Hwan Kim]

Hi, everyone

In kernel source, where is the PCI IO memory resource allocation is done?
(memory mapped io)

And can you explain the IO memory resource allocation mechanism?

Thanks in advance

Best Regards,

J.Hwan Kim

PCI IO memory resource allocation

[Vladimir Murzin]

On Wed, Aug 17, 2011 at 3:33 PM, J.Hwan Kim <frog1120@gmail.com> wrote:
> Hi, everyone
>
> In kernel source, where is the PCI IO memory resource allocation is done?
> (memory mapped io)
>
> And can you explain the IO memory resource allocation mechanism?
>
> Thanks in advance
>
> Best Regards,
>
> J.Hwan Kim
>
>
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
Hi J.Hwan,

Have you tried reading some books like Linux Device Drivers by
Jonathan Corbet, Alessandro
Rubini, and Greg Kroah-Hartman? In mentioned book there is a chapter
dedicated to PCI subsystem.

PCI IO memory resource allocation

[J.Hwan.Kim]

On 2011? 08? 18? 15:01, Vladimir Murzin wrote:
> On Wed, Aug 17, 2011 at 3:33 PM, J.Hwan Kim<frog1120@gmail.com>  wrote:
>> Hi, everyone
>>
>> In kernel source, where is the PCI IO memory resource allocation is done?
>> (memory mapped io)
>>
>> And can you explain the IO memory resource allocation mechanism?
>>
>> Thanks in advance
>>
>> Best Regards,
>>
>> J.Hwan Kim

> Hi J.Hwan,
>
> Have you tried reading some books like Linux Device Drivers by
> Jonathan Corbet, Alessandro
> Rubini, and Greg Kroah-Hartman? In mentioned book there is a chapter
> dedicated to PCI subsystem.
>

Thank you for reply.

As far as I know, the PCI mem resouces are allocated mainly by BIOS on 
Intel based system, but they can also be allocated by linux kernel 
according to boot command option.
I tried to find the routine in kernel source directory, but it was not 
easy to find it.

I want to find the source code in which linux kernel allocates the I/O 
memory for PCI device.
I had a problem in my pci device which uses SR-IOV function indicates that
the MMIO is allocated in sufficiently and my BIOS is old version,
so I hope to solve the problem using the linux kerenl for allocating the 
I/O mem
for the pci device and to know where the source code is for that.

Best Regards,
J.Hwan Kim

PCI IO memory resource allocation

[Erlon Cruz]

You should have a look in Linux Device Drivers, Cap. 9, and Cap. 12.


On Thu, Aug 18, 2011 at 1:04 PM, J.Hwan.Kim <j.hwan.kim99@gmail.com> wrote:

> On 2011? 08? 18? 15:01, Vladimir Murzin wrote:
> > On Wed, Aug 17, 2011 at 3:33 PM, J.Hwan Kim<frog1120@gmail.com>  wrote:
> >> Hi, everyone
> >>
> >> In kernel source, where is the PCI IO memory resource allocation is
> done?
> >> (memory mapped io)
> >>
> >> And can you explain the IO memory resource allocation mechanism?
> >>
> >> Thanks in advance
> >>
> >> Best Regards,
> >>
> >> J.Hwan Kim
>
> > Hi J.Hwan,
> >
> > Have you tried reading some books like Linux Device Drivers by
> > Jonathan Corbet, Alessandro
> > Rubini, and Greg Kroah-Hartman? In mentioned book there is a chapter
> > dedicated to PCI subsystem.
> >
>
> Thank you for reply.
>
> As far as I know, the PCI mem resouces are allocated mainly by BIOS on
> Intel based system, but they can also be allocated by linux kernel
> according to boot command option.
> I tried to find the routine in kernel source directory, but it was not
> easy to find it.
>
> I want to find the source code in which linux kernel allocates the I/O
> memory for PCI device.
> I had a problem in my pci device which uses SR-IOV function indicates that
> the MMIO is allocated in sufficiently and my BIOS is old version,
> so I hope to solve the problem using the linux kerenl for allocating the
> I/O mem
> for the pci device and to know where the source code is for that.
>
> Best Regards,
> J.Hwan Kim
>
>
> _______________________________________________
> Kernelnewbies mailing list
> Kernelnewbies at kernelnewbies.org
> http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
>
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