readw
#define DRM_READ16(map, offset) readw(((void __iomem *)(map)->handle) + (offset))
#define RREG16(reg) readw((rdev->rmmio) + (reg))
return (readw(vtb->vtb_buffer + at) & 0x00ff);
return (readw(vtb->vtb_buffer + at) & 0xff00);
return readw((void *)((ULONG_PTR)base + offset));
readw(BIOS_PADDRTOVADDR(0x463)),
v = readw(buf);
if (readw(buf) != 0xA55A)