All of lore.kernel.org
 help / color / mirror / Atom feed
From: Dan Malek <dan@embeddededge.com>
To: Dan Malek <dan@netx4.com>
Cc: Eric.Oosterhof@radisys.com, linuxppc-dev@lists.linuxppc.org
Subject: Re: I2C module problem on 8260
Date: Tue, 12 Feb 2002 18:21:05 -0500	[thread overview]
Message-ID: <3C69A361.2070103@embeddededge.com> (raw)
In-Reply-To: 3C69A0EC.2090400@embeddededge.com


Dan Malek wrote:



> One of the programming techniques for modules is you must explicitly
> allocate
> all objects subject to DMA such that they are known to be physically
> contiguous
> if necessary.

I should have also mentioned that using these functions also returns
both physical and virtual addresses that you should keep within your
driver so you can avoid calling any function/macro that converts
between physical and virtual addresses.


	-- Dan


** Sent via the linuxppc-dev mail list. See http://lists.linuxppc.org/

  parent reply	other threads:[~2002-02-12 23:21 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-02-12 22:49 I2C module problem on 8260 Eric.Oosterhof
2002-02-12 23:10 ` Dan Malek
2002-02-12 23:18   ` Wolfgang Denk
2002-02-13  6:43     ` Murray Jensen
2002-02-12 23:21   ` Dan Malek [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-02-20 19:26 Eric.Oosterhof

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=3C69A361.2070103@embeddededge.com \
    --to=dan@embeddededge.com \
    --cc=Eric.Oosterhof@radisys.com \
    --cc=dan@netx4.com \
    --cc=linuxppc-dev@lists.linuxppc.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.