Support (unaccelerated) for the 6410, 6412, 6420 and 6440 is provided by the XF86_SVGA server with the cl64xx driver. Support (accelerated) for the 5420, 5422, 5424, 5426, 5428, 5429, 5430, 5434, 5436, 5446, 5480, 5462, 5464, 5465, 6205, 6215, 6225, 6235, 7541, 7542, 7543, 7548, 7555 and 7556 is provided by the XF86_SVGA server with the cirrus driver.
Support (accelerated) for the Alpine (5430, 5434, 5436, 5446, 5480, 7548), and Laguna (5462, 5464, 5465) chips is provided by the "cirrus" driver.
The following chips are supported in 3.3.6 but not in 4.2.0: 6410, 6412, 6420, 6440, 5420, 5422, 5424, 5426, 5428, 5429, 6205, 6215, 6225, 6235, 7541, 7542, 7543, 7555 and 7556.