NAME
ahd
- Adaptec PCI/PCI-X Ultra320 SCSI host adapter driver
SYNOPSIS
For one or more PCI/PCI-X cards:
ahd* at pci? dev ? function ?
To compile in debugging code:
-
options AHD_DEBUG
options AHD_DEBUG_OPTS= of options>
options AHD_REG_PRETTY_PRINT
For
SCSI
busses:
scsibus* at ahd?
DESCRIPTION
This driver provides access to the
SCSI
bus(ses) connected to Adaptec
AIC79xx
host adapter chips.
Driver features include support for narrow and wide busses,
fast, ultra, ultra2, ultra160, and ultra320 synchronous transfers,
packetized transfers, tagged queueing,
and 512 SCBs.
The
AHD_DEBUG_OPTS
option is used to control which diagnostic messages are printed to the
console when
AHD_DEBUG
is enabled.
Logically OR the following bits together:
Value Function
0x0001 Show miscellaneous information
0x0002 Show sense data
0x0004 Show Serial EEPROM contents
0x0008 Show bus termination settings
0x0010 Show host memory usage
0x0020 Show SCSI protocol messages
0x0040 Show mode pointer of the chip register window
0x0080 Show selection timeouts
0x0100 Show FIFO usage messages
0x0200 Show Queue Full status
0x0400 Show SCB queue status
0x0800 Show inbound packet information
0x1000 Show S/G list information
0x2000 Enable extra diagnostic code in the firmware
The
AHD_REG_PRETTY_PRINT
option compiles in support for human-readable bit definitions for each register
that is printed by the debugging code.
However, it also bloats the compiled
size of the driver by approximately 215KB.
HARDWARE
The
ahd
driver supports the following:
-
Adaptec
AIC7901
host adapter chip
-
Adaptec
AIC7901A
host adapter chip
-
Adaptec
AIC7902
host adapter chip
-
Adaptec
29320
host adapter
-
Adaptec
39320
host adapter
-
Many motherboards with on-board
SCSI
support
SEE ALSO
ahc(4),
cd(4),
ch(4),
intro(4),
scsi(4)
sd(4),
ses(4),
st(4)
HISTORY
The
ahd
driver first appeared in
FreeBSD4.7
and
NetBSD2.0.
AUTHORS
The
ahd
driver, the
AIC7xxx
sequencer-code assembler,
and the firmware running on the aic79xx chips was written by
Justin T. Gibbs
.
NetBSD
porting is done by Pascal Renauld, Frank van der Linden,
Jason Thorpe, and Allen Briggs.
This manual page is based on the
ahc(4)
manual page.