Hi, all, I have tried xorg-server-1.5.2 on loongson 2f recently. But I found it doesn't work. It's mainly because of this change: http://www.x.org/wiki/PciReworkProposal In short: "Rather than duplicating the efforts of kernel developers, X.org needs to use the interfaces provided by the kernel as much as possible." I have read some code of libpciaccess, the new library utilizing kernel function to access pci bus. It will try to mmap this file: /sys/bus/pci/devices/0000:0x:xx.x/resource0 (replace x with any digit appropriate) Note there is a 0 at the end of the file name. This file's permission is 600. However, I found on my loongson system, there is only /sys/bus/pci/devices/0000:0x:xx.x/resource Note there is no 0 at the end. Then I tried to read kernel code. I found it seems that for mips linux to have this file, HAVE_PCI_MMAP must be defined. However, it is currently not defined. Since I am not familiar with PCI, yet. So could someone please shed some light on this? Why HAVE_PCI_MMAP is not defined? Thanks in advance! Zhang, Le
