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 2011년 08월 18일 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
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