SCO Unix 5.0.5 lost root password DPT PM2022A/9X Post: 302144999

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LEARN ABOUT NETBSD

dpt

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 definitive 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