Re: Re:Re: PCIe bus seems work while 'dma' can't under linux

2010-06-15 Thread Benjamin Herrenschmidt
On Tue, 2010-06-15 at 15:05 +0800, jxnuxdy wrote: > Thanks Benjamin, the regions don't display as what we expect, that's why we > suspect if there any configuration probelms in CPU host bridge, but we > changed the uboot/linux a lot, seems take no effect on that problems. > > We use CPU MPC8544,

Re: PCIe bus seems work while 'dma' can't under linux

2010-06-11 Thread Benjamin Herrenschmidt
On Fri, 2010-06-11 at 09:30 +0800, jxnuxdy wrote: > Hi guys, > > I encountered a PCIe problem under linux, the two PCIe bus on my board seems > work, > at least I can access the registers through the PCIe bus, however the dma for > the > PCIe bus can't work, so I just dumped the pci device, but

PCIe bus seems work while 'dma' can't under linux

2010-06-10 Thread jxnuxdy
Hi guys, I encountered a PCIe problem under linux, the two PCIe bus on my board seems work, at least I can access the registers through the PCIe bus, however the dma for the PCIe bus can't work, so I just dumped the pci device, but I am curiously to find there is no regions displayed on PCIe co