mga_writel
mga_writel(mmio, M_FXBNDRY, fxbndry);
mga_writel(mmio, M_AR0, ar0);
mga_writel(mmio, M_AR3, 0);
mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
mga_writel(mmio, M_AR5, 0);
mga_writel(mmio, M_YDSTLEN | M_EXEC, ydstlen);
#define mga_outl(addr,val) mga_writel(minfo->mmio.vbase, (addr), (val))