This is a low-level SCSI driver for controllers based on the NCR53c406a chip.

Release 0.11 supports synchronous transfer mode.

Release 0.10 supports interrrupt autodetection and non-interrupt-driven 
mode, so it now should work with MediaVision boards.

Release 0.9 of the driver now supports scatter-gather and PIO mode,
resulting in big speed increase!  It is not quite optimized for the
CPU usage, however.

WARNING!!!
This is an alpha release of the driver, so if you use it, make 
sure you back up your files before compiling and using the driver.

INSTALLATION
These patches are for Linux 1.2.0, and may require some manual
editing with other kernel versions.

To install the driver, copy the patch to /usr/src (assuming the Linux kernel
source is in /usr/src/linux), gunzip it, and then apply it with:
	patch -p0 < ncr53c406-0.11.patch

The default driver configuration is PIO mode with scatter-gather enabled, 
IRQ and i/o port autodetection, BIOS check disabled, fast PIO enabled.

If you experience problems with hardware autodetection, edit 
linux/drivers/NCR53c406.c and set the values manually.
You have to set the DMA channel manually if DMA mode is enabled.

If you experiance kernel lockups while transferring data to/from SCSI 
device, try turning off USE_FAST_PIO.

NOTE: Scatter-gather support is only implemented for PIO mode, so
if you use DMA mode, you must set SG_NONE in NCR53c406.h.

Now reconfigure the kernel (remembering to answer yes to compiling the
NCR53c406 SCSI driver) and then recompile and reinstall it.
You're all set.

If you use the driver, please report your successes/failures/problems to
the mailing list (ncr53c406@li.org) or directly to me
(normunds@rx.tech.swh.lv).  If my address is unreachable, and
you can't get help from the mailing list, try contacting Patrick
D'Cruze <pdcruze@orac.iinet.com.au>, he may know how to reach me.

The mailing list has been established to aid in reporting bugs and to
announce bug fixes and new revisions of the driver.  To subscribe to the
list, send email to:
	majordomo@li.org
with the words:
	subscribe ncr53c406
in the body of the message.

Note: you don't have to be subscribed to the list to send in bug reports.
Just address your bug report to:
	ncr53c406@li.org

This is driver is licensed under the terms and conditions of the Gnu Public
License version 2.


Normunds Saumanis
normunds@rx.tech.swh.lv