VGA_UNIT
return vga_open(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_oflags,
return vga_close(dev, VGA_SOFTC(VGA_UNIT(dev)),
return vga_read(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
return vga_write(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_uio, ap->a_ioflag);
return vga_ioctl(dev, VGA_SOFTC(VGA_UNIT(dev)), ap->a_cmd, ap->a_data, ap->a_fflag, ap->a_cred);
ap->a_result = vga_mmap(dev, VGA_SOFTC(VGA_UNIT(dev)),