This driver was primarily written for the SiS86c201. It also works on the 202 , 205 and 5597/5598 chips. Support for 6326, 530 and 620 has been added since. Some support for SiS86c215 and 225 was added as well. This support consists simply in identify it as 205, so probably 86c215 won't work with acceleration (is a cheap 205 without some features).
The driver supports many advanced features. These include: