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.\" .\" Copyright (c) 1995, 1996, 1997, 1998, 2000 .\" Justin T. Gibbs. All rights reserved. .\" Copyright (c) 2002 .\" Scott Long. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without .\" modification, are permitted provided that the following conditions .\" are met: .\" 1. Redistributions of source code must retain the above copyright .\" notice, this list of conditions and the following disclaimer. .\" 2. Redistributions in binary form must reproduce the above copyright .\" notice, this list of conditions and the following disclaimer in the .\" documentation and/or other materials provided with the distribution. .\" 3. The name of the author may not be used to endorse or promote products .\" derived from this software without specific prior written permission. .\" .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. .\" .\" $FreeBSD: release/9.1.0/share/man/man4/ahd.4 158762 2006-05-20 09:39:28Z brueffer $ .\" .Dd July 4, 2004 .Dt AHD 4 .Os .Sh NAME .Nm ahd .Nd Adaptec PCI/PCI-X Ultra320 SCSI host adapter driver .Sh SYNOPSIS To compile this driver into the kernel, place the following lines in your kernel configuration file: .Bd -ragged -offset indent .Cd "device pci" .Cd "device scbus" .Cd "device ahd" .Pp To compile in debugging code: .Cd options AHD_DEBUG .Cd options AHD_DEBUG_OPTS=<bitmask of options> .Cd options AHD_REG_PRETTY_PRINT .Pp To configure one or more controllers to assume the target role: .Cd options AHD_TMODE_ENABLE=<bitmask of units> .Ed .Pp Alternatively, to load the driver as a module at boot time, place the following line in .Xr loader.conf 5 : .Bd -literal -offset indent ahd_load="YES" .Ed .Sh DESCRIPTION This driver provides access to the .Tn SCSI bus(es) connected to Adaptec .Tn AIC79xx host adapter chips. .Pp Driver features include support for narrow and wide busses, fast, ultra, ultra2, ultra160, and ultra320 synchronous transfers, packetized transfers, tagged queueing, 512 SCB's, and target mode. .Pp The .Dv AHD_DEBUG_OPTS option is used to control which diagnostic messages are printed to the console when .Dv AHD_DEBUG is enabled. Logically OR the following bits together: .Bl -column -offset indent Value Function .Em "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 .El .Pp The .Dv 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. .Pp Individual controllers may be configured to operate in the target role through the .Dv AHD_TMODE_ENABLE configuration option. The value assigned to this option should be a bitmap of all units where target mode is desired. For example, a value of 0x25 would enable target mode on units 0, 2, and 5. Note that target mode is only supported for ultra160 speeds and below. .Pp Per target configuration performed in the .Tn SCSI-Select menu, accessible at boot, is honored by this driver. This includes synchronous/asynchronous transfers, maximum synchronous negotiation rate, wide transfers, disconnection, and the host adapter's .Tn SCSI ID. .Sh HARDWARE The .Nm driver supports the following: .Pp .Bl -bullet -compact .It Adaptec .Tn AIC7901 host adapter chip .It Adaptec .Tn AIC7901A host adapter chip .It Adaptec .Tn AIC7902 host adapter chip .It Adaptec .Tn 29320 host adapter .It Adaptec .Tn 39320 host adapter .It Many motherboards with on-board .Tn SCSI support .El .Sh SEE ALSO .Xr ahc 4 , .Xr cd 4 , .Xr da 4 , .Xr sa 4 , .Xr scsi 4 .Sh HISTORY The .Nm driver first appeared in .Fx 4.7 . .Sh AUTHORS The .Nm driver, the .Tn AIC7xxx sequencer-code assembler, and the firmware running on the aic79xx chips was written by .An Justin T. Gibbs . This manual page is based on the .Xr ahc 4 manual page. .Sh BUGS The current generation of 79xx chips do not support target mode in Ultra320 mode. Target mode in general has not been well tested in this driver.