From: Matt Porter <mporter@kernel.crashing.org>
To: Christoph Hellwig <hch@lst.de>
Cc: Linuxppc-dev@ozlabs.org, Sachin P <sachinpc@gmail.com>
Subject: Re: consistent_alloc() on PPC
Date: Wed, 19 Jan 2005 07:56:03 -0700 [thread overview]
Message-ID: <20050119075603.B448@home.com> (raw)
In-Reply-To: <20050119141048.GA13254@lst.de>; from hch@lst.de on Wed, Jan 19, 2005 at 03:10:48PM +0100
On Wed, Jan 19, 2005 at 03:10:48PM +0100, Christoph Hellwig wrote:
> On Wed, Jan 19, 2005 at 05:23:17PM +0530, Sachin P wrote:
> > Hi ,
> > I am facing some problems porting my drivers to the PPC platform . Am
> > currently using consistent_alloc() and consistent_free() to
> > allocate/free (non-cached) DMA ble memory.
> > Is there any function/patch/macro, equivalent to
> > phy_to_virt()/virt_to_phy() for memory returned by consistent_alloc()?
>
> Don't ever use concistant_alloc directly. Always use
> dma_alloc_coherent() which will give you both virtual and bus address.
He's obviously not talking about 2.6 since he's mentioning
consistent_alloc(). I removed those PPC-specific APIs when I
updated our DMA API implementation in 2.6.
-Matt
next prev parent reply other threads:[~2005-01-19 14:56 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-19 11:53 consistent_alloc() on PPC Sachin P
2005-01-19 14:04 ` Matt Porter
2005-01-19 14:10 ` Christoph Hellwig
2005-01-19 14:56 ` Matt Porter [this message]
2005-01-20 16:30 ` Sachin P
2005-01-20 18:16 ` Matt Porter
-- strict thread matches above, loose matches on Subject: below --
2005-01-19 11:53 Sachin P
2005-01-19 15:14 ` Jörn Engel
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