2 .\" Copyright (c) 1995, 1996, 1997, 1998, 2000
3 .\" Justin T. Gibbs. All rights reserved.
5 .\" Scott Long. All rights reserved.
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8 .\" modification, are permitted provided that the following conditions
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29 .\" $FreeBSD: src/share/man/man4/ahd.4,v 1.2.2.1 2002/09/01 22:35:34 scottl Exp $
30 .\" $DragonFly: src/share/man/man4/ahd.4,v 1.2 2003/06/17 04:36:58 dillon Exp $
37 .Nd Adaptec PCI/PCI-X Ultra320 SCSI host adapter driver
39 For one or more PCI/PCI-X cards:
43 To compile in debugging code.
45 .Cd options AHD_DEBUG_OPTS=<bitmask of options>
46 .Cd options AHD_REG_PRETTY_PRINT
48 To configure one or more controllers to assume the target role:
49 .Cd options AHD_TMODE_ENABLE=<bitmask of units>
51 For one or more SCSI busses:
54 This driver provides access to the
56 bus(es) connected to Adaptec
61 These chips are found on many motherboards as well as the
65 Adaptec SCSI controller cards.
67 Driver features include support for narrow and wide busses,
68 fast, ultra, ultra2, ultra160, and ultra320 synchronous transfers,
69 packetized transfers, tagged queueing, 512 SCB's, and target mode.
73 option is used to control which diagnostic messages are printed to the
76 is enabled. Logically 'or' the following bits together:
78 .Bd -ragged -offset indent
79 .Bl -column "Value " Function
81 0x0001 Show miscellanious information
82 0x0002 Show sense data
83 0x0004 Show Serial EEPROM contents
84 0x0008 Show bus termination settings
85 0x0010 Show host memory usage
86 0x0020 Show SCSI protocol messages
87 0x0040 Show mode pointer of the chip register window
88 0x0080 Show selection timeouts
89 0x0100 Show FIFO usage messages
90 0x0200 Show Queue Full status
91 0x0400 Show SCB queue status
92 0x0800 Show inbound packet information
93 0x1000 Show S/G list information
94 0x2000 Enable extra diagnostic code in the firmware
99 .Dq Dv AHD_REG_PRETTY_PRINT
100 option compiles in support for human-readable bit definitions for each register
101 that is printed by the debugging code. However, it also bloats the compiled
102 size of the driver by approximately 215KB.
104 Individual controllers may be configured to operate in the target role
106 .Dq Dv AHD_TMODE_ENABLE
107 configuration option. The value assigned to this option should be a bitmap
108 of all units where target mode is desired.
109 For example, a value of 0x25, would enable target mode on units 0, 2, and 5.
110 Note that target mode is only supoprted for ultra160 speeds and below.
112 Per target configuration performed in the
114 menu, accessible at boot,
115 is honored by this driver.
116 This includes synchronous/asynchronous transfers,
117 maximum synchronous negotiation rate,
120 and the host adapter's SCSI ID.
123 The current generation of 79xx chips do not support target mode in Ultra320
125 Target mode in general has not been well tested in this driver.
138 sequencer-code assembler,
139 and the firmware running on the aic79xx chips was written by
140 .An Justin T. Gibbs .
141 This manual page is based on the
147 driver first appeared in