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twe(4)

NAME

     twe -- 3ware 5000/6000/7000/8000 series PATA/SATA RAID adapter driver

SYNOPSIS

     device pci
     device twe

DESCRIPTION

     The twe driver provides support for AMCC's 3ware 5000/6000/7000/8000
     series PATA/SATA RAID adapters.  These adapters were formerly know as
     ``3ware Escalade''.

     These devices support 2, 4, 8, or 12 ATA disk drives and provide RAID0
     (striping) and RAID1 (mirroring) functionality.

HARDWARE

     The twe driver supports the following PATA/SATA RAID controllers:

     o	 AMCC's 3ware 5000 series
     o	 AMCC's 3ware 6000 series
     o	 AMCC's 3ware 7000-2
     o	 AMCC's 3ware 7006-2
     o	 AMCC's 3ware 7500-4LP
     o	 AMCC's 3ware 7500-8
     o	 AMCC's 3ware 7500-12
     o	 AMCC's 3ware 7506-4LP
     o	 AMCC's 3ware 7506-8
     o	 AMCC's 3ware 7506-12
     o	 AMCC's 3ware 8006-2LP
     o	 AMCC's 3ware 8500-4LP
     o	 AMCC's 3ware 8500-8
     o	 AMCC's 3ware 8500-12
     o	 AMCC's 3ware 8506-4LP
     o	 AMCC's 3ware 8506-8
     o	 AMCC's 3ware 8506-8MI
     o	 AMCC's 3ware 8506-12
     o	 AMCC's 3ware 8506-12MI

DIAGNOSTICS

   Controller initialisation phase
     twe%d: microcontroller not ready

     The controller's onboard CPU is not reporting that it is ready; this may
     be due to either a board or system failure.  Initialisation has failed.

     twe%d: no attention interrupt
     twe%d: can't drain AEN queue
     twe%d: reset not reported
     twe%d: controller errors detected
     twe%d: can't drain response queue
     twe%d: reset %d failed, trying again

     The controller is not responding correctly to the driver's attempts to
     reset and initialise it.  This process is retried several times.

     twe%d: can't initialise controller, giving up

     twe%d: can't set up interrupt
     twe%d: can't establish configuration hook

     A resource allocation error occurred while initialising the driver; ini-
     tialisation has failed and the driver will not attach to this controller.

     twe%d: can't detect attached units

     Fetching the list of attached units failed; initialisation has failed.

     twe%d: error fetching capacity for unit %d
     twe%d: error fetching state for unit %d
     twe%d: error fetching descriptor size for unit %d
     twe%d: error fetching descriptor for unit %d
     twe%d: device_add_child failed
     twe%d: bus_generic_attach returned %d

     Creation of the disk devices failed, either due to communications prob-
     lems with the adapter or due to resource shortage; attachment of one or
     more units may have been aborted.

   Operational phase
     twe%d: command completed - %s

     A command was reported completed with a warning by the controller.  The
     warning may be one of:

     redundant/inconsequential request ignored
     failed to write zeroes to LBA 0
     failed to profile TwinStor zones

     twe%d: command failed - %s

     A command was reported as failed by the controller.  The failure message
     may be one of:

     aborted due to system command or reconfiguration
     aborted
     access error
     access violation
     device failure
     controller error
     timed out
     invalid unit number
     unit not available
     undefined opcode
     request incompatible with unit
     invalid request
     firmware error, reset requested

     The command will be returned to the operating system after a fatal error.

     twe%d: command failed submission - controller wedged

     A command could not be delivered to the controller because the controller
     is unresponsive.

     twe%d: AEN: <%s>
     rebuild fail
     rebuild done
     incomplete unit
     initialisation done
     unclean shutdown detected
     drive timeout
     drive error
     rebuild started
     aen queue full

     AENs are also queued internally for use by management tools.

     twe%d: error polling for signalled AENs

     The controller has reported that one or more status messages are ready
     for the driver, but attempting to fetch one of these has returned an
     error.

     twe%d: AEN queue overflow, lost AEN <%s>

     A status message was retrieved from the controller, but there is no more
     room to queue it in the driver.  The message is lost (but will be printed
     to the console).

     twe%d: missing expected status bits %s
     twe%d: unexpected status bits %s

     A check of the controller's status bits indicates an unexpected condi-
     tion.

     twe%d: host interrupt

     The controller has signalled a host interrupt.  This serves an unknown
     purpose and is ignored.

     twe%d: command interrupt

     The controller has signalled a command interrupt.	This is not used, and
     will be disabled.

     twe%d: controller reset in progress...

     The controller is being reset by the driver.  Typically this is done when
     the driver has determined that the controller is in an unrecoverable
     state.

     twe%d: can't reset controller, giving up

     The driver has given up on resetting the controller.  No further I/O will
     be handled.

     controller reset done, %d commands restarted

     The controller was successfully reset, and outstanding commands were
     restarted.

BUGS

     The controller cannot handle I/O transfers that are not aligned to a
     <msmith@FreeBSD.org>.

FreeBSD 5.4			August 15, 2004 		   FreeBSD 5.4

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