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Date: Sat, 17 Aug 1996 09:52:22 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199608162352.JAA07932@godzilla.zeta.org.au>
To: imb@asstdc.com.au, julian@whistle.com
Subject: Re: patch for consideration .. multi-block IDE
Cc: current@FreeBSD.org
Sender: owner-current@FreeBSD.org
X-Loop: FreeBSD.org
Precedence: bulk

>What happenned to this?

Nothing.

>I notice that it's not in -current..
>Bruce, did you veto this  or something?

I just pointed out all the bugs in the new and old versions.  I'll
leave it to someone who actually uses multi-mode to fix it.

Bugs:
1. No check that the WDCC_SET_MULTI command actually works.  Affects all
   versions.
2. du->dk_multi is never set to anything other than 1, so multi-mode
   is never used.  Affects current version.
3. The proposed patch sets du->dk_multi too early, so the boot message
   is wrong if multi-mode isn't configured or setting it fails.  It
   isn't easy to print the final setting in the boot message since the
   final setting isn't decided at attach time.

Bruce

>> *** /sys/i386/isa/wd.c.orig     Sun Jul 28 06:52:04 1996
>> --- /sys/i386/isa/wd.c  Wed Aug  7 18:59:08 1996
>> ***************
>> *** 1665,1670 ****
>> --- 1665,1671 ----
>>         du->dk_dd.d_type = DTYPE_ESDI;
>>         du->dk_dd.d_subtype |= DSTYPE_GEOMETRY;
>>   #endif
>> +       du->dk_multi = wp->wdp_nsecperint & 0xff;
>> 
>>         return (0);
>>   }