1.\" 2.\" Copyright (c) 1995, 1996, 1997, 1998, 2000 3.\" Justin T. Gibbs. All rights reserved. 4.\" Copyright (c) 2002 5.\" Scott Long. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. The name of the author may not be used to endorse or promote products 16.\" derived from this software without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 19.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 20.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 21.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 22.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 23.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 24.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 25.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 27.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28.\" 29.Dd July 4, 2004 30.Dt AHD 4 31.Os 32.Sh NAME 33.Nm ahd 34.Nd Adaptec PCI/PCI-X Ultra320 SCSI host adapter driver 35.Sh SYNOPSIS 36To compile this driver into the kernel, 37place the following lines in your 38kernel configuration file: 39.Bd -ragged -offset indent 40.Cd "device pci" 41.Cd "device scbus" 42.Cd "device ahd" 43.Pp 44To compile in debugging code: 45.Cd options AHD_DEBUG 46.Cd options AHD_DEBUG_OPTS=<bitmask of options> 47.Cd options AHD_REG_PRETTY_PRINT 48.Pp 49To configure one or more controllers to assume the target role: 50.Cd options AHD_TMODE_ENABLE=<bitmask of units> 51.Ed 52.Pp 53Alternatively, to load the driver as a 54module at boot time, place the following line in 55.Xr loader.conf 5 : 56.Bd -literal -offset indent 57ahd_load="YES" 58.Ed 59.Sh DESCRIPTION 60This driver provides access to the 61.Tn SCSI 62bus(es) connected to Adaptec 63.Tn AIC79xx 64host adapter chips. 65.Pp 66Driver features include support for narrow and wide busses, 67fast, ultra, ultra2, ultra160, and ultra320 synchronous transfers, 68packetized transfers, tagged queueing, 512 SCB's, and target mode. 69.Pp 70The 71.Dv AHD_DEBUG_OPTS 72option is used to control which diagnostic messages are printed to the 73console when 74.Dv AHD_DEBUG 75is enabled. 76Logically OR the following bits together: 77.Bl -column -offset indent Value Function 78.Em "Value Function" 790x0001 Show miscellaneous information 800x0002 Show sense data 810x0004 Show Serial EEPROM contents 820x0008 Show bus termination settings 830x0010 Show host memory usage 840x0020 Show SCSI protocol messages 850x0040 Show mode pointer of the chip register window 860x0080 Show selection timeouts 870x0100 Show FIFO usage messages 880x0200 Show Queue Full status 890x0400 Show SCB queue status 900x0800 Show inbound packet information 910x1000 Show S/G list information 920x2000 Enable extra diagnostic code in the firmware 93.El 94.Pp 95The 96.Dv AHD_REG_PRETTY_PRINT 97option compiles in support for human-readable bit definitions for each register 98that is printed by the debugging code. 99However, it also bloats the compiled 100size of the driver by approximately 215KB. 101.Pp 102Individual controllers may be configured to operate in the target role 103through the 104.Dv AHD_TMODE_ENABLE 105configuration option. 106The value assigned to this option should be a bitmap 107of all units where target mode is desired. 108For example, a value of 0x25 would enable target mode on units 0, 2, and 5. 109Note that target mode is only supported for ultra160 speeds and below. 110.Pp 111Per target configuration performed in the 112.Tn SCSI-Select 113menu, accessible at boot, 114is honored by this driver. 115This includes synchronous/asynchronous transfers, 116maximum synchronous negotiation rate, 117wide transfers, 118disconnection, 119and the host adapter's 120.Tn SCSI 121ID. 122.Sh HARDWARE 123The 124.Nm 125driver supports the following: 126.Pp 127.Bl -bullet -compact 128.It 129Adaptec 130.Tn AIC7901 131host adapter chip 132.It 133Adaptec 134.Tn AIC7901A 135host adapter chip 136.It 137Adaptec 138.Tn AIC7902 139host adapter chip 140.It 141Adaptec 142.Tn 29320 143host adapter 144.It 145Adaptec 146.Tn 39320 147host adapter 148.It 149Many motherboards with on-board 150.Tn SCSI 151support 152.El 153.Sh SEE ALSO 154.Xr ahc 4 , 155.Xr cd 4 , 156.Xr da 4 , 157.Xr sa 4 , 158.Xr scsi 4 159.Sh HISTORY 160The 161.Nm 162driver first appeared in 163.Fx 4.7 . 164.Sh AUTHORS 165The 166.Nm 167driver, the 168.Tn AIC7xxx 169sequencer-code assembler, 170and the firmware running on the aic79xx chips was written by 171.An Justin T. Gibbs . 172This manual page is based on the 173.Xr ahc 4 174manual page. 175.Sh BUGS 176The current generation of 79xx chips do not support target mode in Ultra320 177mode. 178Target mode in general has not been well tested in this driver. 179