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     amr — MegaRAID SCSI/ATA/SATA RAID driver


     To compile this driver into the kernel, place the following lines in your kernel
     configuration file:

           device pci
           device scbus
           device amr

     Alternatively, to load the driver as a module at boot time, place the following line in



     The amr driver provides support for LSI Logic MegaRAID SCSI, ATA and SATA RAID controllers
     and legacy American Megatrends MegaRAID SCSI RAID controllers, including models relabeled
     and sold by Dell and Hewlett-Packard.

     LSI MegaRAID SAS controllers are supported by mfi(4) and will not work with this driver.


     Controllers supported by the amr driver include:

        MegaRAID SATA 150-4
        MegaRAID SATA 150-6
        MegaRAID SATA 300-4X
        MegaRAID SATA 300-8X
        MegaRAID SCSI 320-1E
        MegaRAID SCSI 320-2E
        MegaRAID SCSI 320-4E
        MegaRAID SCSI 320-0X
        MegaRAID SCSI 320-2X
        MegaRAID SCSI 320-4X
        MegaRAID SCSI 320-0
        MegaRAID SCSI 320-1
        MegaRAID SCSI 320-2
        MegaRAID SCSI 320-4
        MegaRAID Series 418
        MegaRAID i4 133 RAID
        MegaRAID Elite 1500 (Series 467)
        MegaRAID Elite 1600 (Series 493)
        MegaRAID Elite 1650 (Series 4xx)
        MegaRAID Enterprise 1200 (Series 428)
        MegaRAID Enterprise 1300 (Series 434)
        MegaRAID Enterprise 1400 (Series 438)
        MegaRAID Enterprise 1500 (Series 467)
        MegaRAID Enterprise 1600 (Series 471)
        MegaRAID Express 100 (Series 466WS)
        MegaRAID Express 200 (Series 466)
        MegaRAID Express 300 (Series 490)
        MegaRAID Express 500 (Series 475)
        Dell PERC
        Dell PERC 2/SC
        Dell PERC 2/DC
        Dell PERC 3/DCL
        Dell PERC 3/QC
        Dell PERC 4/DC
        Dell PERC 4/IM
        Dell PERC 4/SC
        Dell PERC 4/Di
        Dell PERC 4e/DC
        Dell PERC 4e/Di
        Dell PERC 4e/Si
        Dell PERC 4ei
        HP NetRAID-1/Si
        HP NetRAID-3/Si (D4943A)
        HP Embedded NetRAID
        Intel RAID Controller SRCS16
        Intel RAID Controller SRCU42X


   Driver initialisation/shutdown phase
     amr%d: memory window not available
     amr%d: I/O window not available

     The PCI BIOS did not allocate resources necessary for the correct operation of the
     controller.  The driver cannot attach to this controller.

     amr%d: busmaster bit not set, enabling

     The PCI BIOS did not enable busmaster DMA, which is required for the correct operation of
     the controller.  The driver has enabled this bit and initialisation will proceed.

     amr%d: can't allocate register window
     amr%d: can't allocate interrupt
     amr%d: can't set up interrupt
     amr%d: can't allocate parent DMA tag
     amr%d: can't allocate buffer DMA tag
     amr%d: can't allocate scatter/gather DMA tag
     amr%d: can't allocate s/g table
     amr%d: can't allocate mailbox tag
     amr%d: can't allocate mailbox memory

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

     amr%d: can't obtain configuration data from controller
     amr%d: can't obtain product data from controller

     The driver was unable to obtain vital configuration data from the controller.
     Initialisation has failed and the driver will not attach to this controller.

     amr%d: can't establish configuration hook
     amr%d: can't scan controller for drives

     The scan for logical drives managed by the controller failed.  No drives will be attached.

     amr%d: device_add_child failed
     amr%d: bus_generic_attach returned %d

     Creation of the logical drive instances failed; attachment of one or more logical drives may
     have been aborted.

     amr%d: flushing cache...

     The controller cache is being flushed prior to shutdown or detach.

   Operational diagnostics
     amr%d: I/O beyond end of unit (%u,%d > %u)

     A partitioning error or disk corruption has caused an I/O request beyond the end of the
     logical drive.  This may also occur if FlexRAID Virtual Sizing is enabled and an I/O
     operation is attempted on a portion of the virtual drive beyond the actual capacity

     amr%d: polled command timeout

     An initialisation command timed out.  The initialisation process may fail as a result.

     amr%d: bad slot %d completed

     The controller reported completion of a command that the driver did not issue.  This may
     result in data corruption, and suggests a hardware or firmware problem with the system or

     amr%d: I/O error - %x

     An I/O error has occurred.


     cd(4), da(4), mfi(4), sa(4), scsi(4)


     The amr driver was written by Mike Smith <>.

     This manual page was written by Mike Smith <> and Jeroen Ruigrok van der
     Werven <>.