From: gerg@snapgear.com (Greg Ungerer)
To: linux-arm-kernel@lists.infradead.org
Subject: about uclinux for armnommu dma allocate issue
Date: Wed, 13 Apr 2011 04:02:22 +1000 [thread overview]
Message-ID: <4DA493AE.3040007@snapgear.com> (raw)
In-Reply-To: <BANLkTikkzWZcfeic8qUeLKLr5+ef14eA4g@mail.gmail.com>
Hi Wan,
On 11/04/11 00:04, Wan ZongShun wrote:
> I am programming ohci driver for my arm7 based on 2.6.38.
>
> td_alloc -> dma_pool_alloc -> dma_alloc_coherent().
>
> In previous uclinux version, there is the consistent.c located in
> arch/armnommu/mm to implement
> this dma_alloc_coherent, but now this latest version, I did not see
> this 'dma_alloc_coherent' function
> for armnommu, so I can use this function directly like this arm mmu?
Yes. There is no separate one for the nommu case. It just
uses the standard one in arch/arm/mm/dma-mapping.c.
> In addtion, the 'kmalloc' is the same to previous uclinux armnommu
> version? I can use it directly?
Oh, yes. There is no changes in how that works.
Regards
Greg
prev parent reply other threads:[~2011-04-12 18:02 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-10 14:04 about uclinux for armnommu dma allocate issue Wan ZongShun
2011-04-12 18:02 ` Greg Ungerer [this message]
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