[ewg] updated ehca release notes for ofed-1.2

[Hoang-Nam Nguyen]

Hi,
That's fine.
Nam
ewg-bounces at lists.openfabrics.org wrote on 21.06.2007 21:02:13:

> Hi Nam,
>
> I am sorry but we already did the last build of OFED 1.2 and since the
> RN are part of the SRPM its hard for us to update now.
> I did commit you changes to the docs git tree thus any new build (if wee
> need) will include them.
>
>
> Tziporet
>
>
>
> -----Original Message-----
> From: ewg-bounces at lists.openfabrics.org
> [mailto:ewg-bounces at lists.openfabrics.org] On Behalf Of Hoang-Nam Nguyen
> Sent: Thursday, June 21, 2007 5:59 PM
> To: tziporet at dev.mellanox.co.il; ewg at lists.openfabrics.org
> Cc: raisch at de.ibm.com
> Subject: [ewg] updated ehca release notes for ofed-1.2
>
> Hello Tziporet!
> Below is the updated release notes for ehca with following changes for
> more clarity:
> - Add section "Available backports"
> - Add known issue #3
> Thanks!
> Regards
> Nam
>
>
>              Open Fabrics Enterprise Distribution (OFED)
>                     ehca in OFED 1.2 Release Notes
>
>                            June 2007
>
>
> Overview
> --------
> ehca is the low level driver implementation for all IBM GX-based HCAs.
>
> ehca Available Parameters
> --------------------------
> In order to set ehca parameters, add the following line(s) to
> /etc/modprobe.conf:
>
>         options ib_ehca <parameter>=<value>
>
> whereby <parameter> is one of the following items:
> - debug_level     debug level (0: no debug traces (default), 1: with
> debug traces)
> - nr_ports        number of connected ports (default: 2)
> - port_act_time   time to wait for port activation (default: 30 sec)
> - scaling_code    enable scaling code (default: 1), 0: disable scaling
> code
>
> New Features
> ------------
> - Scaling code can now be turned on (default) or off at module load
> time.
>   Enabling scaling code helps to distribute processing completions
> across CPUs.
>
> Fixed Bugs
> ----------
> - Mismatched sync/locking between completion handler and destroy cq
> - Reworked irq handler to avoid/reduce missed irq events
> - Removed do_mmap() and obsolete prototypes
> - Serialized calls to register_mr() (Bugzilla #574)
>
> Available backports
> -------------------
> - RedHat EL4 up5: 2.6.9-42.ELsmp
> - RedHat EL5: 2.6.18-8.ELsmp
> - SLES10: 2.6.16.21-0.8-smp
> - kernel.org: 2.6.19.x and 2.6.20.x
>
> Known Issues
> ------------
> 1. The device driver normally uses both ports. For using just one port
> connect
> the ports as shown in Figure 1 and load the device driver by running
> `modprobe ib_ehca nr_ports=1`.
>
>           --------- IB Card in p570
>           |
>          \ /
>         +---+
>         | # |
>         | # |
>         | # |
>         | # |  <--- Port 2: NOT CONNECTED
>         | # |
>         |---|
>         | # |
>         | # |
>         | # |
>         | # |  <--- Port 1: CONNECTED TO THE INFINIBAND SWITCH
>         | # |
>         +---+
>
> *Figure 1:* Connections if only one port is used.
>
> NOTE: In OpenPower 720 and p550 port 1 is at the top, port 2 is at the
> bottom.
>
> 2. Furthermore the port(s) needs to be connected to an active switch
> port while
> loading the ehca device driver.
>
> 3. RedHat EL5 2.6.18-8.ELsmp
>    User space not supported
>
>
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