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freebsd-skq/share/man/man4/ahc.4

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To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.\"
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
.\" Copyright (c) 1995, 1996, 1997, 1998, 2000
To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.\" Justin T. Gibbs. 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
Fix some typos.
1999-07-30 12:59:13 +00:00
.\" derived from this software without specific prior written permission.
To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.\"
.\" 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.
.\"
$Id$ -> $FreeBSD$
1999-08-28 00:22:10 +00:00
.\" $FreeBSD$
To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.\"
Remove EISA support from ahc driver. The AIC-7770 chip can be on ISA, VesaLocalBus or EISA. Internally, EISA and ISA are handled the same, with VL being handled slightly differently. To avoid too much code churn, retain the EISA name, despite it being used only for ISA bus. When it is on the ISA bus, weird gymnastics are required with EISA-space address accesses as well. Remove known models from the ahc man page. Remove ahc_eisa module.
2017-02-16 21:57:19 +00:00
.Dd February 15, 2017
* remove i386 specific mark * some style and syntax fixes * some duplicated $FreeBSD$ tags removed
1999-11-15 23:14:32 +00:00
.Dt AHC 4
mdoc(7) police: removed HISTORY info from the .Os call.
2001-07-10 15:31:11 +00:00
.Os
To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.Sh NAME
.Nm ahc
Remove EISA support from ahc driver. The AIC-7770 chip can be on ISA, VesaLocalBus or EISA. Internally, EISA and ISA are handled the same, with VL being handled slightly differently. To avoid too much code churn, retain the EISA name, despite it being used only for ISA bus. When it is on the ISA bus, weird gymnastics are required with EISA-space address accesses as well. Remove known models from the ahc man page. Remove ahc_eisa module.
2017-02-16 21:57:19 +00:00
.Nd Adaptec VL/ISA/PCI SCSI host adapter driver
To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.Sh SYNOPSIS
Convert to use a SYNPOSIS section that mentions kernel modules. Also add "device scbus" where needed. MFC after: 3 days
2006-05-20 09:39:28 +00:00
To compile this driver into the kernel,
place the following lines in your
kernel configuration file:
.Bd -ragged -offset indent
.Cd "device scbus"
.Cd "device ahc"
.Pp
Update to face reality. We now support the aic7850, aic7860 and aic7880. Mention Ultra support and SCB paging. Remove references to AHC_TAGENABLE.
1996-04-20 21:37:49 +00:00
For one or more PCI cards:
Convert to use a SYNPOSIS section that mentions kernel modules. Also add "device scbus" where needed. MFC after: 3 days
2006-05-20 09:39:28 +00:00
.Cd "device pci"
More man page cleanups.
1996-01-19 22:17:57 +00:00
.Pp
Update to match reality. Give more indepth description of SCB paging and tagged queueing. Mention the AHC_ALLOW_MEMIO option.
1997-02-18 20:27:26 +00:00
To allow PCI adapters to use memory mapped I/O if enabled:
.Cd options AHC_ALLOW_MEMIO
More man page cleanups.
1996-01-19 22:17:57 +00:00
.Pp
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
To configure one or more controllers to assume the target role:
.Cd options AHC_TMODE_ENABLE <bitmask of units>
Convert to use a SYNPOSIS section that mentions kernel modules. Also add "device scbus" where needed. MFC after: 3 days
2006-05-20 09:39:28 +00:00
.Ed
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
.Pp
Convert to use a SYNPOSIS section that mentions kernel modules. Also add "device scbus" where needed. MFC after: 3 days
2006-05-20 09:39:28 +00:00
Alternatively, to load the driver as a
module at boot time, place the following lines in
.Xr loader.conf 5 :
.Bd -literal -offset indent
ahc_load="YES"
ahc_isa_load="YES"
ahc_pci_load="YES"
.Ed
To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.Sh DESCRIPTION
More man page cleanups.
1996-01-19 22:17:57 +00:00
This driver provides access to the
.Tn SCSI
Add a HARDWARE section which lists supported devices. The actual device listings has been moved (and in some cases more or less rewritten) from the DESCRIPTION section. This will be used later for automatically generating device listings in the Hardware Notes, by parsing the manual pages. Reviewed in principle by: ru, hrs, trhodes No objections: -doc, re Section name inspired by: NetBSD
2004-07-04 14:17:41 +00:00
bus(es) connected to the Adaptec AIC77xx and AIC78xx
Update to face reality. We now support the aic7850, aic7860 and aic7880. Mention Ultra support and SCB paging. Remove references to AHC_TAGENABLE.
1996-04-20 21:37:49 +00:00
host adapter chips.
Add some pc98-specific devices from the hardware notes.
2003-11-09 22:53:58 +00:00
.Pp
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
Driver features include support for twin and wide busses,
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
fast, ultra or ultra2 synchronous transfers depending on controller type,
Consistently use 'queueing' instead of 'queuing'. Both spellings are correct, but the former seems to be preferred. This makes all of the section-4 manual pages consistent in this respect.
2001-08-25 21:58:58 +00:00
tagged queueing, SCB paging, and target mode.
Update to match reality. Give more indepth description of SCB paging and tagged queueing. Mention the AHC_ALLOW_MEMIO option.
1997-02-18 20:27:26 +00:00
.Pp
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
Memory mapped I/O can be enabled for PCI devices with the
Update to match reality. Give more indepth description of SCB paging and tagged queueing. Mention the AHC_ALLOW_MEMIO option.
1997-02-18 20:27:26 +00:00
.Dq Dv AHC_ALLOW_MEMIO
More man page cleanups.
1996-01-19 22:17:57 +00:00
configuration option.
Update to match reality. Give more indepth description of SCB paging and tagged queueing. Mention the AHC_ALLOW_MEMIO option.
1997-02-18 20:27:26 +00:00
Memory mapped I/O is more efficient than the alternative, programmed I/O.
Most PCI BIOSes will map devices so that either technique for communicating
Typo fix.
1997-05-30 15:43:36 +00:00
with the card is available.
Update to match reality. Give more indepth description of SCB paging and tagged queueing. Mention the AHC_ALLOW_MEMIO option.
1997-02-18 20:27:26 +00:00
In some cases,
usually when the PCI device is sitting behind a PCI->PCI bridge,
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
the BIOS may fail to properly initialize the chip for memory mapped I/O.
The typical symptom of this problem is a system hang if memory mapped I/O
Update to match reality. Give more indepth description of SCB paging and tagged queueing. Mention the AHC_ALLOW_MEMIO option.
1997-02-18 20:27:26 +00:00
is attempted.
Most modern motherboards perform the initialization correctly and work fine
with this option enabled.
More man page cleanups.
1996-01-19 22:17:57 +00:00
.Pp
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
Individual controllers may be configured to operate in the target role
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
through the
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
.Dq Dv AHC_TMODE_ENABLE
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
configuration option.
The value assigned to this option should be a bitmap
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
of all units where target mode is desired.
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
For example, a value of 0x25, would enable target mode on units 0, 2, and 5.
Clarify the proper bitmask for target mode with another example.
2003-03-23 00:56:20 +00:00
A value of 0x8a enables it for units 1, 3, and 7.
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
.Pp
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
Per target configuration performed in the
More man page cleanups.
1996-01-19 22:17:57 +00:00
.Tn SCSI-Select
Typo fix.
1997-05-30 15:43:36 +00:00
menu, accessible at boot
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
is honored by this driver.
This includes synchronous/asynchronous transfers,
Update to face reality. We now support the aic7850, aic7860 and aic7880. Mention Ultra support and SCB paging. Remove references to AHC_TAGENABLE.
1996-04-20 21:37:49 +00:00
maximum synchronous negotiation rate,
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
wide transfers,
Update to face reality. We now support the aic7850, aic7860 and aic7880. Mention Ultra support and SCB paging. Remove references to AHC_TAGENABLE.
1996-04-20 21:37:49 +00:00
disconnection,
Remove EISA support from ahc driver. The AIC-7770 chip can be on ISA, VesaLocalBus or EISA. Internally, EISA and ISA are handled the same, with VL being handled slightly differently. To avoid too much code churn, retain the EISA name, despite it being used only for ISA bus. When it is on the ISA bus, weird gymnastics are required with EISA-space address accesses as well. Remove known models from the ahc man page. Remove ahc_eisa module.
2017-02-16 21:57:19 +00:00
the host adapter's SCSI ID.
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
For systems that store non-volatile settings in a system specific manner
rather than a serial eeprom directly connected to the aic7xxx controller,
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
the
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
.Tn BIOS
must be enabled for the driver to access this information.
Remove EISA support from ahc driver. The AIC-7770 chip can be on ISA, VesaLocalBus or EISA. Internally, EISA and ISA are handled the same, with VL being handled slightly differently. To avoid too much code churn, retain the EISA name, despite it being used only for ISA bus. When it is on the ISA bus, weird gymnastics are required with EISA-space address accesses as well. Remove known models from the ahc man page. Remove ahc_eisa module.
2017-02-16 21:57:19 +00:00
This restriction applies to
many chip-down motherboard configurations.
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
.Pp
Performance and feature sets vary throughout the aic7xxx product line.
The following table provides a comparison of the different chips supported
by the
.Nm
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
driver.
Note that wide and twin channel features, although always supported
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
by a particular chip, may be disabled in a particular motherboard or card
design.
mdoc(7) police: Change -filled displays (which just happen to be the same as -ragged in the current implementation) to -ragged. With mdocNG, -filled displays produce the correct output, formatted and justified to both margins.
2001-02-07 13:45:30 +00:00
.Bd -ragged -offset indent
Remove EISA support from ahc driver. The AIC-7770 chip can be on ISA, VesaLocalBus or EISA. Internally, EISA and ISA are handled the same, with VL being handled slightly differently. To avoid too much code churn, retain the EISA name, despite it being used only for ISA bus. When it is on the ISA bus, weird gymnastics are required with EISA-space address accesses as well. Remove known models from the ahc man page. Remove ahc_eisa module.
2017-02-16 21:57:19 +00:00
.Bl -column "aic7895CX" "MIPSX" "PCI/64X" "MaxSyncX" "MaxWidthX" "SCBsX" "2 3 4 5 6 7 8X"
mdoc: use It for each item in the list and separate each cell with Ta.
2012-03-31 07:08:35 +00:00
.It Em "Chip" Ta "MIPS" Ta "Bus" Ta "MaxSync" Ta "MaxWidth" Ta "SCBs" Ta "Features"
Remove EISA support from ahc driver. The AIC-7770 chip can be on ISA, VesaLocalBus or EISA. Internally, EISA and ISA are handled the same, with VL being handled slightly differently. To avoid too much code churn, retain the EISA name, despite it being used only for ISA bus. When it is on the ISA bus, weird gymnastics are required with EISA-space address accesses as well. Remove known models from the ahc man page. Remove ahc_eisa module.
2017-02-16 21:57:19 +00:00
.It "aic7770" Ta "10" Ta "VL" Ta "10MHz" Ta "16Bit" Ta "4" Ta "1"
mdoc: use It for each item in the list and separate each cell with Ta.
2012-03-31 07:08:35 +00:00
.It "aic7850" Ta "10" Ta "PCI/32" Ta "10MHz" Ta "8Bit" Ta "3" Ta ""
.It "aic7860" Ta "10" Ta "PCI/32" Ta "20MHz" Ta "8Bit" Ta "3" Ta ""
.It "aic7870" Ta "10" Ta "PCI/32" Ta "10MHz" Ta "16Bit" Ta "16" Ta ""
.It "aic7880" Ta "10" Ta "PCI/32" Ta "20MHz" Ta "16Bit" Ta "16" Ta ""
.It "aic7890" Ta "20" Ta "PCI/32" Ta "40MHz" Ta "16Bit" Ta "16" Ta "3 4 5 6 7 8"
.It "aic7891" Ta "20" Ta "PCI/64" Ta "40MHz" Ta "16Bit" Ta "16" Ta "3 4 5 6 7 8"
.It "aic7892" Ta "20" Ta "PCI/64" Ta "80MHz" Ta "16Bit" Ta "16" Ta "3 4 5 6 7 8"
.It "aic7895" Ta "15" Ta "PCI/32" Ta "20MHz" Ta "16Bit" Ta "16" Ta "2 3 4 5"
.It "aic7895C" Ta "15" Ta "PCI/32" Ta "20MHz" Ta "16Bit" Ta "16" Ta "2 3 4 5 8"
.It "aic7896" Ta "20" Ta "PCI/32" Ta "40MHz" Ta "16Bit" Ta "16" Ta "2 3 4 5 6 7 8"
.It "aic7897" Ta "20" Ta "PCI/64" Ta "40MHz" Ta "16Bit" Ta "16" Ta "2 3 4 5 6 7 8"
.It "aic7899" Ta "20" Ta "PCI/64" Ta "80MHz" Ta "16Bit" Ta "16" Ta "2 3 4 5 6 7 8"
Removed whitespace at end-of-line; no content changes. I simply did cd src/share; find man[1-9] -type f|xargs perl -pi -e 's/[ \t]+$//' BTW, what editors are the culprits? I'm using vim and it shows me whitespace at EOL in troff files with a thick blue block... Reviewed by: Silence from cvs diff -b MFC after: 7 days
2001-07-14 19:41:16 +00:00
.El
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
.Pp
.Bl -enum -compact
.It
Multiplexed Twin Channel Device - One controller servicing two busses.
.It
Multi-function Twin Channel Device - Two controllers on one chip.
.It
Command Channel Secondary DMA Engine - Allows scatter gather list and
SCB prefetch.
.It
64 Byte SCB Support - SCSI CDB is embedded in the SCB to eliminate an extra DMA.
.It
Block Move Instruction Support - Doubles the speed of certain sequencer
operations.
.It
.Sq Bayonet
style Scatter Gather Engine - Improves S/G prefetch performance.
.It
Consistently use 'queueing' instead of 'queuing'. Both spellings are correct, but the former seems to be preferred. This makes all of the section-4 manual pages consistent in this respect.
2001-08-25 21:58:58 +00:00
Queuing Registers - Allows queueing of new transactions without pausing the
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
sequencer.
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
.It
Multiple Target IDs - Allows the controller to respond to selection as a
target on multiple SCSI IDs.
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
.El
.Ed
Add a HARDWARE section which lists supported devices. The actual device listings has been moved (and in some cases more or less rewritten) from the DESCRIPTION section. This will be used later for automatically generating device listings in the Hardware Notes, by parsing the manual pages. Reviewed in principle by: ru, hrs, trhodes No objections: -doc, re Section name inspired by: NetBSD
2004-07-04 14:17:41 +00:00
.Sh HARDWARE
The
.Nm
driver supports the following
.Tn SCSI
host adapter chips and
.Tn SCSI
controller cards:
.Pp
.Bl -bullet -compact
.It
Adaptec
.Tn AIC7770
host adapter chip
.It
Adaptec
.Tn AIC7850
host adapter chip
.It
Adaptec
.Tn AIC7860
host adapter chip
.It
Adaptec
.Tn AIC7870
host adapter chip
.It
Adaptec
.Tn AIC7880
host adapter chip
.It
Adaptec
.Tn AIC7890
host adapter chip
.It
Adaptec
.Tn AIC7891
host adapter chip
.It
Adaptec
.Tn AIC7892
host adapter chip
.It
Adaptec
.Tn AIC7895
host adapter chip
.It
Adaptec
.Tn AIC7896
host adapter chip
.It
Adaptec
.Tn AIC7897
host adapter chip
.It
Adaptec
.Tn AIC7899
host adapter chip
.It
Adaptec
.Tn 274X(W)
.It
Adaptec
.Tn 274X(T)
.It
Adaptec
.Tn 2910
.It
Adaptec
.Tn 2915
.It
Adaptec
More explicitly mention that we support the 2920C with the ahc driver. PR: 125535 Submitted by: Bob Bishop <rb at gid dot co dot uk> MFC after: 3 days
2008-07-13 13:56:21 +00:00
.Tn 2920C
Add a HARDWARE section which lists supported devices. The actual device listings has been moved (and in some cases more or less rewritten) from the DESCRIPTION section. This will be used later for automatically generating device listings in the Hardware Notes, by parsing the manual pages. Reviewed in principle by: ru, hrs, trhodes No objections: -doc, re Section name inspired by: NetBSD
2004-07-04 14:17:41 +00:00
.It
Adaptec
.Tn 2930C
.It
Adaptec
.Tn 2930U2
.It
Adaptec
.Tn 2940
.It
Adaptec
.Tn 2940J
.It
Adaptec
.Tn 2940N
.It
Adaptec
.Tn 2940U
.It
Adaptec
.Tn 2940AU
.It
Adaptec
.Tn 2940UW
.It
Adaptec
.Tn 2940UW Dual
.It
Adaptec
.Tn 2940UW Pro
.It
Adaptec
.Tn 2940U2W
.It
Adaptec
.Tn 2940U2B
.It
Adaptec
.Tn 2950U2W
.It
Adaptec
.Tn 2950U2B
.It
Adaptec
.Tn 19160B
.It
Adaptec
.Tn 29160B
.It
Adaptec
.Tn 29160N
.It
Adaptec
.Tn 3940
.It
Adaptec
.Tn 3940U
.It
Adaptec
.Tn 3940AU
.It
Adaptec
.Tn 3940UW
.It
Adaptec
.Tn 3940AUW
.It
Adaptec
.Tn 3940U2W
.It
Adaptec
.Tn 3950U2
.It
Adaptec
.Tn 3960
.It
Adaptec
.Tn 39160
.It
Adaptec
.Tn 3985
.It
Adaptec
.Tn 4944UW
.It
Many motherboards with on-board
.Tn SCSI
support
.El
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
.Sh SCSI CONTROL BLOCKS (SCBs)
Every transaction sent to a device on the SCSI bus is assigned a
.Sq SCSI Control Block
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
(SCB).
The SCB contains all of the information required by the
controller to process a transaction.
The chip feature table lists
the number of SCBs that can be stored in on-chip memory.
All chips
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
with model numbers greater than or equal to 7870 allow for the on chip
SCB space to be augmented with external SRAM up to a maximum of 255 SCBs.
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
Very few Adaptec controller configurations have external SRAM.
.Pp
If external SRAM is not available, SCBs are a limited resource.
Ispell sweep of share/man/man4.
2002-01-21 12:09:13 +00:00
Using the SCBs in a straight forward manner would only allow the driver to
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
handle as many concurrent transactions as there are physical SCBs.
To fully utilize the SCSI bus and the devices on it,
requires much more concurrency.
The solution to this problem is
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
.Em SCB Paging ,
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
a concept similar to memory paging.
SCB paging takes advantage of
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
the fact that devices usually disconnect from the SCSI bus for long
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
periods of time without talking to the controller.
The SCBs for disconnected transactions are only of use to the controller
when the transfer is resumed.
When the host queues another transaction
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
for the controller to execute, the controller firmware will use a
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
free SCB if one is available.
Otherwise, the state of the most recently
Fix typo (therefor -> therefore) PR: 30345 Submitted by: Giorgos Keramidas <charon@labs.gr>
2001-09-05 19:24:28 +00:00
disconnected (and therefore most likely to stay disconnected) SCB is
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
saved, via dma, to host memory, and the local SCB reused to start
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
the new transaction.
This allows the controller to queue up to
255 transactions regardless of the amount of SCB space.
Since the
Update to include all supported chips. Add a table comparing the features of all aic7xxx chips. Clean up the discussion of SCB paging. Reviewed by: Kenneth Merry <ken@FreeBSD.org>
1998-10-16 15:06:26 +00:00
local SCB space serves as a cache for disconnected transactions, the
more SCB space available, the less host bus traffic consumed saving
and restoring SCB data.
Sort sections.
2005-01-21 08:36:40 +00:00
.Sh SEE ALSO
Remove more stray EISA refernces: ahb was removed. Remove the cross reference and replace, where appropiate, with ahd.4.
2017-02-22 20:47:25 +00:00
.Xr ahd 4 ,
Sort sections.
2005-01-21 08:36:40 +00:00
.Xr cd 4 ,
.Xr da 4 ,
.Xr sa 4 ,
.Xr scsi 4
.Sh HISTORY
The
.Nm
driver appeared in
.Fx 2.0 .
.Sh AUTHORS
The
.Nm
driver, the
.Tn AIC7xxx
sequencer-code assembler,
and the firmware running on the aic7xxx chips was written by
.An Justin T. Gibbs .
To celibrate the new status of the ahc driver, give it a man page. Add references to the ahc driver to the other adaptec man pages. Remove the "NOTE" section of the ahb man page that complained about Adaptec's NDA policy preventing 274x driver development.
1995-04-15 21:48:31 +00:00
.Sh BUGS
Some Quantum drives (at least the Empire 2100 and 1080s) will not run on an
More man page cleanups.
1996-01-19 22:17:57 +00:00
.Tn AIC7870
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
Rev B in synchronous mode at 10MHz.
Controllers with this problem have a
42 MHz clock crystal on them and run slightly above 10MHz.
This confuses the drive and hangs the bus.
Setting a maximum synchronous negotiation rate of 8MHz in the
More man page cleanups.
1996-01-19 22:17:57 +00:00
.Tn SCSI-Select
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
utility will allow normal operation.
.Pp
Although the Ultra2 and Ultra160 products have sufficient instruction
ram space to support both the initiator and target roles concurrently,
this configuration is disabled in favor of allowing the target role
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
to respond on multiple target ids.
A method for configuring dual role mode should be provided.
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
.Pp
Tagged Queuing is not supported in target mode.
.Pp
Reselection in target mode fails to function correctly on all high
Hiten's patchset for section four manpages, slightly edited by me.
2003-06-28 23:53:39 +00:00
voltage differential boards as shipped by Adaptec.
Information on
Add references to new device support. Add information on target mode. Add more entries to the bugs sections (all having to do with target mode).
2000-02-14 16:40:58 +00:00
how to modify HVD board to work correctly in target mode is available
from Adaptec.
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