Re: Re: How to support 3GB pci address?

2008-12-12 Thread maillist.kernel
Thanks for all the suggestions and Comments! In the system, the total memory size is less than 4GB. I want to know how to map the 3GB pci address to the kernel , and how can my driver access all the pci device. Usually we have only 1GB kernel address, minus the 896MB for memory map, we can onl

How to support 3GB pci address?

2008-12-11 Thread maillist.kernel
Hi, we want to design a system using mpc8548, and linking with an idt 16 ports PCIE switch. In the system, the total PCI address needed is about 3GB, so I want to know how to support it in linux. mpc8548 has 36-bit real address, and can support 32GB PCIE address space, but in linux, there is onl