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NetBSD 6.1.5 - man page for dpt (netbsd section 4)

DPT(4)				   BSD Kernel Interfaces Manual 			   DPT(4)

NAME
     dpt -- DPT EATA SCSI adapter driver

SYNOPSIS
     dpt* at isa? port ? irq ? dma ?
     dpt* at eisa? slot ?
     dpt* at pci? dev ? function ?
     scsibus* at dpt?

DESCRIPTION
     The dpt driver provides support for third and fourth generation DPT SCSI controllers.  All
     communication with the controllers is conducted via the EATA (Enhanced AT Bus Attachment)
     protocol.

     DPT adapters examine and interpret all SCSI commands received before passing them to any
     underlying physical device(s).  In this way, caching, RAID and other transformations are
     achieved while remaining transparent to the host operating system.

HARDWARE
     The dpt driver provides support for the adapters listed below.  Later models are supported
     by the iop driver.

	   DPT SmartCache III
	   DPT SmartCache IV
	   DPT SmartRAID III
	   DPT SmartRAID IV

FILES
     /dev/dptu	control device for unit u

DIAGNOSTICS
     None of these messages should be encountered under normal circumstances.  It should be noted
     that the list below is not complete.

     dpt%d: readcfg failed - see dpt(4)
	     The EATA configuration data did not appear upon request.  This may be caused by
	     older firmware.  Generally the solution is to power-cycle the affected machine.

     dpt%d: spurious intr
	     A spurious interrupt was received from the HBA.

     dpt%d: bogus status (returned CCB id NNNN)
	     A corrupt or incomplete status packet was received from the HBA.

SEE ALSO
     cd(4), ch(4), dpti(4), intro(4), iop(4), scsi(4), sd(4), st(4)

     The sysutils/dptutil package.

     CAM committee standard CAM/89-004 - the EATA (Enhanced AT Bus Attachment) protocol.

HISTORY
     The dpt driver first appeared in NetBSD 1.4.2.

BUGS
     EATA adapters other than listed may function correctly with the dpt driver, however a defin-
     itive list is not available.

     Older boards that do not support scatter-gather I/O or DMA are not supported.

     ECC formatted disk and arrays (i.e. with a sector size of 528 bytes) do not work correctly
     with the PM2041 and certain firmware revisions of the PM3334.

BSD					 December 7, 2002				      BSD


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