ioread32
if (ioread32(bios + i) != *((const u32 *) "$VBT"))
cmd = ioread32(vaddr + head);
*seqno = ioread32(vaddr + head + 4) + 1;
return ioread32(rdev->rio_mem + reg);
return ioread32(rdev->rio_mem + RADEON_MM_DATA);
iowrite32(ioread32(srcP++), dstP++);