On 2011년 08월 18일 15:01, Vladimir Murzin wrote: > On Wed, Aug 17, 2011 at 3:33 PM, J.Hwan Kim<frog1120@xxxxxxxxx> 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@xxxxxxxxxxxxxxxxx http://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
