kern/39511: ataraid(4): Intel MatrixRAID support

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>Number:         39511
>Category:       kern
>Synopsis:       ataraid(4): Intel MatrixRAID support
>Confidential:   no
>Severity:       non-critical
>Priority:       high
>Responsible:    kern-bug-people
>State:          open
>Class:          change-request
>Submitter-Id:   net
>Arrival-Date:   Wed Sep 10 15:10:01 +0000 2008
>Originator:     Juan RP
>Release:        Latest
>Organization:
>Environment:
NetBSD sasha 4.99.72 NetBSD 4.99.72 (MASTER.DEBUG) #4: Wed Sep 10 16:52:44 CEST 
2008  juan@sasha:/home/juan/build/amd64/obj/sys/arch/amd64/compile/MASTER.DEBUG 
amd64
>Description:
I've adapted the code from FreeBSD's ataraid(4) driver to support
volumes from Intel MatrixRAID controllers.

$ dmesg|grep -E '(ld0|ataraid)'
ataraid0: found 1 RAID volume
ld0 at ataraid0 vendtype 5 unit 0: Intel MatrixRAID ATA RAID-1 array
ld0: 233 GB, 30515 cyl, 255 head, 63 sec, 512 bytes/sect x 490229760 sectors
$

Due to problems encountered when multiple volumes are used, I chose
to only use the first volume available. This should be enough for now.

Will send a patch in a short time.
>How-To-Repeat:

>Fix: