dpt(4)

NAME

dpt - DPT RAID Controller SCSI driver

SYNOPSIS

For one or more EISA Controllers
device eisa
device dpt
For one or more PCI Controllers
device pci
device dpt
To allow PCI adapters to use memory mapped I/O if enabled:
options DPT_ALLOW_MEMIO

DESCRIPTION

The dpt driver supports DPT RAID SCSI controllers.

SmartRAID (PM3???) are "Enterprise" class cards, and Smart

Cache (PM2???)
cards are in the "Workstation" class. The Gen 4 Smart Cache

IV products
were a re-issue of the Gen 3 utilizing upgraded (and cheaper

to produce)
silicon. The PM3334 (Smart RAID III) was not revamped as

there was no
upgraded silicon (68040 processor) and it was using the best

DPT made.
Note there has been customer confusion over the faster en

terprise class
card supported by this driver being an older generation.

The Gen5 cards
are supported by the asr(4) driver.

HARDWARE

The dpt driver provides support for the following RAID

adapters:

+o DPT Smart Cache Plus
+o Smart Cache II (PM2?2?, PM2022 [EISA], PM2024/PM2124

[PCI]) (Gen2)
+o Smart RAID II (PM3?2?, PM3021, PM3222)
+o Smart Cache III (PM2?3?)
+o Smart RAID III (PM3?3?, PM3332 [EISA], PM3334UW [PCI])

(Gen3)
+o Smart Cache IV (PM2?4?, PM2042 [EISA], PM2044/PM2144

[PCI]) (Gen4)
+o Smart RAID IV

FILES

sys/dev/dpt/dpt_scsi.c Core Driver Implementation
sys/dev/dpt/dpt.h Register Set and Core Driver

Data Struc

tures

sys/dev/dpt/dpt_pci.c PCI Bus Driver Attachment
sys/dev/dpt/dpt_eisa.c EISA Bus Driver Attachment

SEE ALSO

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

HISTORY

The dpt driver first appeared in FreeBSD 2.2.6.

AUTHORS

The dpt driver was written by Simon Shapiro and ported to

the CAM SCSI
system by Justin T. Gibbs.

BSD July 4, 2004

BSD