bin/160581: mfiutil(8) doesn' t properly detect dead battery with mfiutil show battery

[Mark]

The following reply was made to PR bin/160581; it has been noted by GNATS.

From: Mark <markjdb at gmail.com>
To: bug-followup at FreeBSD.org, gcooper at ixsystems.com
Cc:  
Subject: Re: bin/160581: mfiutil(8) doesn&#39;t properly detect dead battery
 with mfiutil show battery
Date: Sat, 10 Sep 2011 15:58:27 -0400

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 Hi Garrett,
 
 It looks like mfi(4) is missing a mask or several for the fw_status
 field when it tries to grab info about the battery backup. Maybe the
 attached patch can help a bit in figuring out what mfiutil is
 ignoring. I don't know if there's a publicly available datasheet for
 the firmware; I couldn't find it last time I tried. Maybe jhb@ has
 access to one. There's nothing useful in LSI's FreeBSD or Linux
 drivers - probably the opcodes and masks are just hardcoded into
 MegaCLI.
 
 If there's no way to figure out the masks from a datasheet, it'll
 probably be necessary to disassemble MegaCLI or something. I can try
 and figure it out, but I don't have access to a machine with an LSI
 controller right now, so it'd be tricky. =(
 
 Thanks,
 -Mark
 
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