Subversion Repositories or1k

        Linux I2O Support       (c) Copyright 1999-2002 Red Hat and others.

        This program is free software; you can redistribute it and/or
        modify it under the terms of the GNU General Public License
        as published by the Free Software Foundation; either version
        2 of the License, or (at your option) any later version.


Hardware Compatibility
-----------------------

This is an informal test summary. It is not definitive as a reference work
or guaranteed of any accuracy.

Last updated for 2.4.19pre7-ac1


Tested Hardware                 block   config  lan     proc    scsi
-----------------------------------------------------------------------
Current Release
        AMI MegaRAID[0]         YES     YES     N/A     YES     N/A


Previous Stable Release (2.4.18ac3)
        AMI MegaRAID[0]         FAIL
        DPT Smartraid           ------------ Use dpt_i2o module ------------
        Intel SCU RAID          FAIL[2] ???     N/A     ???     FAIL[2]
        Promise Supertrak100    YES[3]  YES[3]  N/A     YES[3]  N/A
        Promise SX6000          YES[3]  YES[3]  N/A     YES[3]  N/A
        Symbios FC920           YES     YES[4]  N/A     YES     YES


[0] In I2O mode. For normal mode use the megaraid driver
[1] Initialisation oddities and scsi failure. Use dpt_i2o module instead.
[2] Card hangs under certain load patterns.
[3] The driver works correctly. Certain values are misreported by this
card but the results are only cosmetic. Firmware updates are required for some
very early cards. Set the card into I2O not 'Linux' mode.
[4] HTML configuration mode not available.

Requirements
------------

I2O 1.5 compliant hardware
PCI bus interrupt driven I2O devices
Devices in classes Block, Lan or SCSI.
32bit I2O messages supported

Limitations
-----------
64bit message formats are not supported (64bit I2O is basically a whole 
                different driver variant)
I2O Tape class is not supported (no known devices using this..)
Currently only 32bit x86 platforms are supported.


Authors
--------
        Alan Cox, Building Number Three Ltd.
                Core code, SCSI and Block OSMs

        Steve Ralston, LSI Logic Corp.
                Debugging SCSI and Block OSM

        Deepak Saxena, Intel Corp.
                Various core/block extensions
                /proc interface, bug fixes
                Ioctl interfaces for control
                Debugging LAN OSM

        Philip Rumpf
                Fixed assorted dumb SMP locking bugs

        Juha Sievanen, University of Helsinki Finland
                LAN OSM code
                /proc interface to LAN class
                Bug fixes
                Core code extensions

                LAN OSM code
                /Proc interface to LAN class
                Bug fixes
                Core code extensions

                Fixes to i2o_config

        Boji T Kannanthanam
                Intel i2o controller work, extending proc/config stuff

Credits
--------
        This work was made possible by 

Red Hat
        Funding for the Building #3 part of the project

Symbios Logic (Now LSI)
        Host adapters, hints, known to work platforms when I hit
        compatibility problems

BoxHill Corporation
        Loan of initial FibreChannel disk array used for development work.

European Comission
        Funding the work done by the University of Helsinki

SysKonnect
        Loan of FDDI and Gigabit Ethernet cards

ASUSTeK
        Loan of I2O motherboard 

Promise
        Providing a Supertrak 100 board and support info

DPT (now Adaptec)
        Providing a DPT smartraid I2O card (use dpt_i2o for this
        board however)


General:
o       Finish 64bit and big endian cleanup
o       Switch to new PCI mapping layer throughout
o       Hotswap of controllers
o       PCI IOP's without interrupts are not supported yet
o       Push FAIL handling into the core

Block:
o       Multiple major numbers (problem goes away in 2.5)
o       Power management

SCSI:

Lan:    
o       Performance tuning
o       Test Fibre Channel code

Tape:
o       Anyone seen anything implementing this ?