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* Properly support the 3ware generic API.ps2003-08-051-0/+10
| | | | | | | | | | | - Build SGL's for ATA_PASSTHROUGH commands - Fallback to using the sgl_offset when the opcode is unknown for building SGL's/ - Add ioctl calls for adding and removing units. - Define previously undefined AEN's - Allocate memory for the ioctl payload in multiples of 512bytes. MFC after: 1 week
* Major update to the 'twe' driver.msmith2000-10-251-0/+92
- Layout reorganisation to enhance portability. The driver now has a relatively MI 'core' and a FreeBSD-specific layer over the top. Since the NetBSD people have already done their own port, this is largely just to help me with the BSD/OS port. - Request ID allocation changed to improve performance (I'd been considering switching to this approach after having failed to come up with a better way to dynamically allocate request IDs, and seeing Andy Doran use it in the NetBSD port of the driver convinced me that I was wasting my time doing it any other way). Now we just allocate all the requests up front. - Maximum request count bumped back to 255 after characterisation of a firmware issue (off-by-one causing it to crash with 256 outstanding commands). - Control interface implemented. This allows 3ware's '3dm' utility to talk to the controller. 3dm will be available from 3ware shortly. - Controller soft-reset feature added; if the controller signals a firmware or protocol error, the controller will be reset and all outstanding commands will be retried.
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