Found the problem I was using phys_to_virt(..) to convert the physical address to virtual. Once I fixed that everything seems to be working now. so
Waqar > -----Original Message----- > From: owner-linuxppc-embedded at lists.linuxppc.org > [mailto:owner-linuxppc-embedded at lists.linuxppc.org]On Behalf Of wahmad > Sent: Monday, September 16, 2002 6:38 PM > To: linuxppc-embedded at lists.linuxppc.org > Subject: problem with pci_alloc_consistent > > > > I am using pci_alloc_consistent() for obtaining contiguous > memory that is > cache safe. Here is how I am calling the routine > > pci_alloc_consistent(NULL,size,&dummy). > Note I am throwing away the bus address. > > The memory that I get does not seem to be cache safe. My > device doesn't see > the data untill I add flush_dcache_range(..). It is very > undesirable for me > to add flushes and invalidates. I will appreciate any help in > this matter. > > I am using kernel version 2.4.20-pre5 for IBM PPC405GP and > using version > 2.95.3 for gcc on an x86 as a cross compiler. > > I also have CONFIG_NOT_COHERENT_CACHE defined. > > Thanks > > Waqar > > > > ** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
