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AIC7xxx Driver for Linux
July 20, 1997
Introduction
------------------------
The AIC7xxx SCSI driver adds support for Adaptec (http://www.adaptec.com)
SCSI controllers and chipsets. Major portions of the driver and driver
development are shared between both Linux and FreeBSD. Support for the
AIC-7xxx chipsets have been in the default Linux kernel since approximately
linux-1.1.x and fairly stable since linux-1.2.x, and are also in FreeBSD
2.1.0 or later.
Supported cards/chipsets
------------------------
Adaptec Cards
-----------------------
AHA-274x
AHA-2842
AHA-2940
AHA-2940W
AHA-2940U
AHA-2940UW
AHA-2944D
AHA-2944WD
AHA-3940
AHA-3940W
AHA-3985
AHA-3985W
Motherboard Chipsets
-----------------------
AIC-777x
AIC-785x
AIC-786x
AIC-787x
AIC-788x
Bus Types
-----------------------
W - Wide SCSI, SCSI-3, 16bit bus, 68pin connector, will also support
SCSI-1/SCSI-2 50pin devices, transfer rates up to 20MB/s.
U - Ultra SCSI, transfer rates up to 40MB/s.
D - Differential SCSI.
T - Twin Channel SCSI. Up to 14 SCSI devices.
AHA-274x - EISA SCSI controller
AHA-284x - VLB SCSI controller
AHA-29xx - PCI SCSI controller
AHA-394x - PCI controllers with two separate SCSI controllers on-board.
AHA-398x - PCI RAID controllers with three separate SCSI controllers
on-board.
NOTE: The AHA-2920 is NOT a AIC-7xxx based controller, and is not
handled by this driver.
People
------------------------
Justin T Gibbs gibbs@freefall.FreeBSD.org (BSD Driver Author)
Dan Eischen deischen@iworks.InterWorks.org (Linux Driver Co-maintainer)
Dean Gehnert deang@teleport.com (Linux FTP/patch maintainer)
Jess Johnson jester@frenzy.com (AIC7xxx FAQ author)
Doug Ledford dledford@dialnet.net (Stress tester/bug squasher)
Special thanks go to John Aycock (aycock@cpsc.ucalgary.ca), the original
author of the driver. John has since retired from the project. Thanks
again for all his work!
Mailing list
------------------------
There is a mailing list available for users who want to track development
and converse with other users and developers. This list is for both
FreeBSD and Linux support of the AIC7xxx chipsets.
To subscribe to the AIC7xxx mailing list send mail to the list server,
with "subscribe AIC7xxx" in the body (no Subject: required):
To: majordomo@FreeBSD.ORG
---
subscribe AIC7xxx
To unsubscribe from the list, send mail to the list server with:
To: majordomo@FreeBSD.ORG
---
unsubscribe AIC7xxx
Send regular messages and replies to: AIC7xxx@FreeBSD.ORG
Command line options ("aic7xxx=option[,option...]")
---------------------------------------------------
"aic7xxx=no_reset" - Eliminate the SCSI reset delay during startup.
Some SCSI devices need some extra time to reset.
"aic7xxx=extended" - Force extended translation.
"aic7xxx=ultra" - Force Ultra mode
"aic7xxx=irq_trigger:[0,1]" - Edge (0) or Level (1) triggered
interrupts. AFAIK, the driver only works with level triggered
interrupts. This only applies to EISA adapters.
"aic7xxx=verbose" - Enable more bootup messages. PLEASE use this
if you have problems with the driver.
/proc support
------------------------
The /proc support for the AIC7xxx can be found in the /proc/scsi/aic7xxx/
directory. That directory contains a file for each SCSI controller in
the system. Each file presents the current configuration and transfer
statistics (enabled with #define in aic7xxx.c) for each controller.
Thanks to Michael Neuffer for for his upper-level SCSI help, and
Matthew Jacob for statistics support.
FTP sites
------------------------
ftp://ftp.teleport.com/users/deang/Linux/aic7xxx/
- Main Linux AIC7xxx driver release/pre-release site
- Experimental/development patches and bootdisks
ftp://ftp.dialnet.net/pub/linux/aic7xxx/
- US Linux mirror of Teleport site
ftp://ekf2.vsb.cz/pub/linux/kernel/aic7xxx/ftp.teleport.com/
- European Linux mirror of Teleport site
ftp://ftp.pcnet.com/users/eischen/Linux/
- Daniel Eischens experimental/development ftp site that is
also home of the Linux aic7xxx sequencer assembler source.
Sequencer assembler
------------------------
The sequencer assembler is no longer being distributed with the
Linux kernel. The sequencer assembler (aic7xxx_asm) is now being
maintained by Justin Gibbs under a BSD copyright (which pretty
much lets you do anything you want with it). I keep a Linux
version of the assembler at my ftp site should you wish to hack
the sequencer code (ftp://ftp.pcnet.com/users/eischen/Linux/).
Please note that you do NOT need the assembler to build a kernel
with aic7xxx support. The assembler generates the code that is
downloaded to the aic7xxx controllers; this code IS part of the
Linux kernel (aic7xxx_seq.h and aic7xxx_reg.h).
Problems compiling the kernel with aic7xxx support
--------------------------------------------------
This is probably due to having modified the sequencer files in
some way. If you are not modifying the sequencer source (in
drivers/scsi/aic7xxx/aic7xxx.seq), then you can just re-extract
the necessary files from your kernel tarball. Otherwise, visit
my anonymous ftp site (ftp.pcnet.com) and grab the sequencer
assembler source.
Dean W. Gehnert
deang@teleport.com
(Modified by D. Eischen, 7/20/97)
$Revision: 3.1a $
|
