Revamp the devstat priority system. All disks now have the same priority.
The same goes for CD drivers and tape drivers. In systems with mixed IDE
and SCSI, devices in the same priority class will

Revamp the devstat priority system. All disks now have the same priority.
The same goes for CD drivers and tape drivers. In systems with mixed IDE
and SCSI, devices in the same priority class will be sorted in attach
order.

Also, the 'CCD' priority is now the 'ARRAY' priority, and a number of
drivers have been modified to use that priority.

This includes the necessary changes to all drivers, except the ATA drivers.
Soren will modify those separately.

This does not include and does not require any change in the devstat
version number, since no known userland applications use the priority
enumerations.

Reviewed by: msmith, sos, phk, jlemon, mjacob, bde

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Correctly compute the block count. In reality, it seems that the
controller will never return the command if it's not exactly a multiple
of a block in size.

Cosmetic formatting for RAID level outpu

Correctly compute the block count. In reality, it seems that the
controller will never return the command if it's not exactly a multiple
of a block in size.

Cosmetic formatting for RAID level output.

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Move some hardware-related items to the hardware-related header.

Shift to using the same queueing strategy that the amr driver uses.
Some simple tests indicate that we use about 2% of the CPU at aro

Move some hardware-related items to the hardware-related header.

Shift to using the same queueing strategy that the amr driver uses.
Some simple tests indicate that we use about 2% of the CPU at around
500tps with the controller completely saturated with I/O.

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Save the drive device_t correctly so we can print it later.

The drive number is 5 bits, not 4, in the read/write command.

Add support for the version 4 firmware interface and the DAC960 PG and
PJ cards. This will probably also support the AcceleRAID and
eXtremeRAID cards, but nobody has volunteered one for testing, so

Add support for the version 4 firmware interface and the DAC960 PG and
PJ cards. This will probably also support the AcceleRAID and
eXtremeRAID cards, but nobody has volunteered one for testing, so I
haven't enabled their PCI device IDs.

Slightly clean up communication between the disk devices and the
controller device as per new practice, and move some more register-
related items int mlxreg.h from mlxvar.h.

Remove some unnecessary read-modify-write operations to the card
control registers; they don't behave like that.

Increase the status polling interval to 10 seconds. It's still possible
to load the card up to the point where a status poll will find the
previous poll still running, but this will reduce the incidence of
complaints.

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This is a driver for the Mylex DAC960 family of integrated RAID
controllers. It currently supports the P, PL, PD and PU variants,
with more to be supported shortly.