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.\" $FreeBSD$ 30.\" 31.Dd July 4, 2004 32.Dt AHD 4 33.Os 34.Sh NAME 35.Nm ahd 36.Nd Adaptec PCI/PCI-X Ultra320 SCSI host adapter driver 37.Sh SYNOPSIS 38For one or more PCI/PCI-X cards: 39.Bd -ragged -offset indent -compact 40.Cd device pci 41.Cd device ahd 42.Ed 43.Pp 44To compile in debugging code: 45.Bd -ragged -offset indent -compact 46.Cd options AHD_DEBUG 47.Cd options AHD_DEBUG_OPTS=<bitmask of options> 48.Cd options AHD_REG_PRETTY_PRINT 49.Ed 50.Pp 51To configure one or more controllers to assume the target role: 52.Bd -ragged -offset indent -compact 53.Cd options AHD_TMODE_ENABLE=<bitmask of units> 54.Ed 55.Pp 56For one or more 57.Tn SCSI 58busses: 59.Bd -ragged -offset indent -compact 60.Cd device scbus 61.Ed 62.Sh DESCRIPTION 63This driver provides access to the 64.Tn SCSI 65bus(es) connected to Adaptec 66.Tn AIC79xx 67host adapter chips. 68.Pp 69Driver features include support for narrow and wide busses, 70fast, ultra, ultra2, ultra160, and ultra320 synchronous transfers, 71packetized transfers, tagged queueing, 512 SCB's, and target mode. 72.Pp 73The 74.Dv AHD_DEBUG_OPTS 75option is used to control which diagnostic messages are printed to the 76console when 77.Dv AHD_DEBUG 78is enabled. 79Logically OR the following bits together: 80.Bl -column -offset indent Value Function 81.Em "Value Function" 820x0001 Show miscellaneous information 830x0002 Show sense data 840x0004 Show Serial EEPROM contents 850x0008 Show bus termination settings 860x0010 Show host memory usage 870x0020 Show SCSI protocol messages 880x0040 Show mode pointer of the chip register window 890x0080 Show selection timeouts 900x0100 Show FIFO usage messages 910x0200 Show Queue Full status 920x0400 Show SCB queue status 930x0800 Show inbound packet information 940x1000 Show S/G list information 950x2000 Enable extra diagnostic code in the firmware 96.El 97.Pp 98The 99.Dv AHD_REG_PRETTY_PRINT 100option compiles in support for human-readable bit definitions for each register 101that is printed by the debugging code. 102However, it also bloats the compiled 103size of the driver by approximately 215KB. 104.Pp 105Individual controllers may be configured to operate in the target role 106through the 107.Dv AHD_TMODE_ENABLE 108configuration option. 109The value assigned to this option should be a bitmap 110of all units where target mode is desired. 111For example, a value of 0x25 would enable target mode on units 0, 2, and 5. 112Note that target mode is only supported for ultra160 speeds and below. 113.Pp 114Per target configuration performed in the 115.Tn SCSI-Select 116menu, accessible at boot, 117is honored by this driver. 118This includes synchronous/asynchronous transfers, 119maximum synchronous negotiation rate, 120wide transfers, 121disconnection, 122and the host adapter's 123.Tn SCSI 124ID. 125.Sh HARDWARE 126The 127.Nm 128driver supports the following: 129.Pp 130.Bl -bullet -compact 131.It 132Adaptec 133.Tn AIC7901 134host adapter chip 135.It 136Adaptec 137.Tn AIC7901A 138host adapter chip 139.It 140Adaptec 141.Tn AIC7902 142host adapter chip 143.It 144Adaptec 145.Tn 29320 146host adapter 147.It 148Adaptec 149.Tn 39320 150host adapter 151.It 152Many motherboards with on-board 153.Tn SCSI 154support 155.El 156.Sh SEE ALSO 157.Xr ahc 4 , 158.Xr cd 4 , 159.Xr da 4 , 160.Xr sa 4 , 161.Xr scsi 4 162.Sh HISTORY 163The 164.Nm 165driver first appeared in 166.Fx 4.7 . 167.Sh AUTHORS 168The 169.Nm 170driver, the 171.Tn AIC7xxx 172sequencer-code assembler, 173and the firmware running on the aic79xx chips was written by 174.An Justin T. Gibbs . 175This manual page is based on the 176.Xr ahc 4 177manual page. 178.Sh BUGS 179The current generation of 79xx chips do not support target mode in Ultra320 180mode. 181Target mode in general has not been well tested in this driver. 182