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aac driver 2.0

================

The Solaris aac driver enhancement updates the Solaris aac 1.6 driver

to a full-fledged one. The old Solaris aac driver is simple and stable,

but with limited functions.

The new Solaris aac driver adds support of the following features:

1. New firmware support:

New Communication interface, RawIO command, Large FIB, 64-bit LBA

2. New hardware support:

Rocket chip based cards, such as 2820SA

3. Other features:

64-bit DMA, Fast IO, firmware version checking, tagged-queuing

4. IOCTL

5. AIF

6. IOP reset

The new Solaris aac 2.0 driver is mainly based on FreeBSD 6.0 aac driver.

IOP reset, AIF handling, 64-bit LBA, and some other minor features are

implemented from scratch by Adaptec engineers. They are not supported in

current FreeBSD aac driver.

Adaptec approves Sun's intention to open source the aac RAID driver for

commercial Solaris and the Open Solaris community.