From: Dan Malek <dan@embeddededge.com>
To: Steven Scholz <steven.scholz@imc-berlin.de>
Cc: LinuxPPC <linuxppc-embedded@lists.linuxppc.org>,
Frank Przybylski <frank.przybylski@vas-gmbh.de>
Subject: Re: MPC8xx and IDMA !?!?
Date: Fri, 19 Apr 2002 14:15:25 -0400 [thread overview]
Message-ID: <3CC05EBD.6050905@embeddededge.com> (raw)
In-Reply-To: 3CC006F1.5940B04E@imc-berlin.de
Steven Scholz wrote:
> So my workaround for now is to allocate more than I need and correct the
> value for IBASE like
> ibase += ibase % 16
>
> Could anyone think of a better solution? Since I waste at least 16 bytes
> in the DPRAM.
That's the way I always did it on 8xx. For 8260, I added a second alignment
parameter to dpram_alloc(). If the address it would return isn't properly
aligned, it will waste sufficient memory behind your back to make this
happen :-) At least it won't waste any if you align and the sizes are
modulo the alignment.
> Where is Wolfgangs m8xx_cpm_dpfree() !?!?
Sitting in my basket of things to do. I wanted to add the alignment
to the 8xx as well, and this complicates the free function because it
doesn't know alignment was done with the region you may have allocated.
-- Dan
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
next prev parent reply other threads:[~2002-04-19 18:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-17 8:28 MPC8xx and IDMA !?!? Steven Scholz
2002-04-19 12:00 ` Steven Scholz
2002-04-19 18:15 ` Dan Malek [this message]
2002-04-23 15:39 ` Steven Scholz
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