2 .\" Copyright (c) 1994 Jordan Hubbard
3 .\" All rights reserved.
5 .\" Redistribution and use in source and binary forms, with or without
6 .\" modification, are permitted provided that the following conditions
8 .\" 1. Redistributions of source code must retain the above copyright
9 .\" notice, this list of conditions and the following disclaimer.
10 .\" 2. Redistributions in binary form must reproduce the above copyright
11 .\" notice, this list of conditions and the following disclaimer in the
12 .\" documentation and/or other materials provided with the distribution.
13 .\" 3. The name of the author may not be used to endorse or promote products
14 .\" derived from this software without specific prior written permission
16 .\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 .\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 .\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 .\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 .\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 .\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 .\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 .\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 .\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 .\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 .\" $FreeBSD: src/share/man/man4/bt.4,v 1.10.4.6 2001/10/01 13:07:23 dd Exp $
28 .\" $DragonFly: src/share/man/man4/bt.4,v 1.5 2008/05/02 02:05:05 swildner Exp $
35 .Nd Buslogic/Mylex MultiMaster SCSI host adapter driver
37 .Cd "device bt0 at isa? port ? irq ?"
38 .Cd device scbus0 at bt0
40 This driver provides access to the
42 bus connected to a Buslogic/Mylex MultiMaster or compatible controller:
43 .Bd -ragged -offset indent
44 .Bl -column "BT-956CD " "ISA " "Commands " Description
45 MultiMaster "W" Series Host Adapters:
47 .Em "Adapter Bus Commands Description"
48 BT-948 PCI 192 ULtra SCSI-3
49 BT-958 PCI 192 Wide ULtra SCSI-3
50 BT-958D PCI 192 Wide Differential ULtra SCSI-3
52 .Bl -column "BT-956CD " "ISA " "Commands " Description
53 MultiMaster "C" Series Host Adapters:
55 .Em "Adapter Bus Commands Description"
56 BT-946C PCI 100 Fast SCSI-2
57 BT-956C PCI 100 Wide Fast SCSI-2
58 BT-956CD PCI 100 Wide Differential Fast SCSI-2
59 BT-445C VLB 100 Fast SCSI-2
60 BT-747C EISA 100 Fast SCSI-2
61 BT-757C EISA 100 Wide Fast SCSI-2
62 BT-757CD EISA 100 Wide Differential Fast SCSI-2
63 BT-545C ISA 50 Fast SCSI-2
64 BT-540CF ISA 50 Fast SCSI-2
66 .Bl -column "BT-956CD " "ISA " "Commands " Description
67 MultiMaster "S" Series Host Adapters:
69 .Em "Adapter Bus Commands Description"
70 BT-445S VLB 30 Fast SCSI-2
71 BT-747S EISA 30 Fast SCSI-2
72 BT-747D EISA 30 Differential Fast SCSI-2
73 BT-757S EISA 30 Wide Fast SCSI-2
74 BT-757D EISA 30 Wide Differential Fast SCSI-2
75 BT-545S ISA 30 Fast SCSI-2
76 BT-542D ISA 30 Differential Fast SCSI-2
77 BT-742A EISA 30 SCSI-2 (742A revision H)
78 BT-542B ISA 30 SCSI-2 (542B revision H)
80 .Bl -column "BT-956CD " "ISA " "Commands " Description
81 MultiMaster "A" Series Host Adapters:
83 .Em "Adapter Bus Commands Description"
84 BT-742A EISA 30 SCSI-2 (742A revisions A - G)
85 BT-542B ISA 30 SCSI-2 (542B revisions A - G)
89 AMI FastDisk Host Adapters that are true BusLogic MultiMaster clones are also
90 supported by this driver.
92 Tagged queueing is supported on 'W' series adapters, 'C' series adapters
93 with firmware of rev 4.42 and higher, and 'S' series adapters with firmware
94 of rev 3.35 and higher.
96 Boards with certain firmware revisions may lock up under heavy load to
97 certain devices, especially if tagged queueing is used. Should you encounter
98 a problem with your adapter, contact Mylex technical support and ensure you
99 have the latest firmware for your controller.
101 .Bl -tag -width /usr/share/man0/template.doc -compact
102 .It Pa /sys/dev/disk/buslogic/bt.c
103 Core Driver Implementation
104 .It Pa /sys/dev/disk/buslogic/btreg.h
105 MultiMaster Register Set and Core Driver Data Structures
106 .It Pa /sys/dev/disk/buslogic/bt_pci.c
107 PCI Bus Driver Attachment
108 .It Pa /sys/dev/disk/buslogic/bt_eisa.c
109 EISA Bus Driver Attachment
110 .It Pa /sys/dev/disk/buslogic/bt_isa.c
111 ISA/VL Bus Driver Attachment
121 driver first appeared in the
127 wrote a driver for the Multimaster cards that appeared in the
129 patch kit. The driver was rewritten by
131 to take advantage of new board features and work with the CAM SCSI framework in
135 .An Leonard N. Zubkoff
136 for writing such a complete and well documented Mylex/BusLogic MultiMaster
137 driver for Linux. Support in this driver for the wide range of MultiMaster
138 controllers and firmware revisions, with their otherwise undocumented quirks,
139 would not have been possible without his efforts.