On Thu, Apr 26, 2007 at 04:55:25PM +0100, Alan Cox wrote: > iomap uses PIO_MASK to idenfiy ports within the I/O space range. The mips > code looks somewhat incomplete in the base kernel which is probably much > of the problem. > > The basic idea is that ioread/iowrite and friends work generically > regardless of MMIO v PIO so you can just do > > pci_iomap(some bar); > iowrite(blah); > pci_iounmap(blah) > > and not worry about anything. > > Now if your platform doesn't have seperate IO space you could probably > implement iowrite/ioremap/ioport_map to be pretty much no-ops depending > upon how your PCI bars are encoded. This Au1200 doesn't have PCI; to access the PCMCIA IO space one has to ioremap() a part from the top of the 36bit space. I took the cheap route and simply removed the PIO_MASK check from my local kernel. Thank you, -- Manuel Lauss
