DPT(4) BSD Kernel Interfaces Manual DPT(4)
dpt -- DPT RAID Controller SCSI driver
For one or more EISA Controllers
For one or more PCI Controllers
To allow PCI adapters to use memory mapped I/O if enabled:
The dpt driver supports DPT RAID SCSI controllers.
SmartRAID (PM3???) are "Enterprise" class cards, and SmartCache (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 enterprise class
card supported by this driver being an older generation. The Gen5 cards
are supported by the asr(4) driver.
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
sys/dev/dpt/dpt_scsi.c Core Driver Implementation
sys/dev/dpt/dpt.h Register Set and Core Driver Data Struc-
sys/dev/dpt/dpt_pci.c PCI Bus Driver Attachment
sys/dev/dpt/dpt_eisa.c EISA Bus Driver Attachment
cd(4), ch(4), da(4), sa(4), scsi(4)
The dpt driver was written by Simon Shapiro and ported to the CAM SCSI
system by Justin T. Gibbs.
The dpt driver first appeared in FreeBSD 2.2.6.
BSD July 4, 2004 BSD