From: Sam Ravnborg <sam@ravnborg.org>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: tony.luck@intel.com, linux-ia64@vger.kernel.org,
linux-kernel@vger.kernel.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH 0/13] IA64: unifying ways to handle multiple sets of dma mapping ops
Date: Wed, 7 Jan 2009 20:56:46 +0100 [thread overview]
Message-ID: <20090107195646.GE4647@uranus.ravnborg.org> (raw)
In-Reply-To: <1231166178-20050-1-git-send-email-fujita.tomonori@lab.ntt.co.jp>
On Mon, Jan 05, 2009 at 11:36:05PM +0900, FUJITA Tomonori wrote:
> This patchset is the first part of the unification of ways to handle
> multiple sets of dma mapping API. The whole work consists of three
> patchset. This is for IA64 and can be applied independently.
>
> dma_mapping_ops (or dma_ops) struct is used to handle multiple sets of
> dma mapping API by X86, SPARC, and POWER. IA64 also handle multiple
> sets of dma mapping API but in a very different way (some define
> magic).
>
> X86 and IA64 share VT-d and SWIOTLB code. We need several workarounds
> for it because of the deference of ways to handle multiple sets of dma
> mapping API (e.g., X86 people can't freely change struct
> dma_mapping_ops in x86's dma-mapping.h now because it could break
> IA64). Seems POWER will use SWIOTLB code soon. I think that it's time
> to unify ways to handle multiple sets of dma mapping API. After
> applying the whole work, we have struct dma_map_ops
> include/linux/dma-mapping.h (I also dream of changing all the archs to
> use SWIOTLB in order to remove the bounce code in the block and
> network stacks...).
>
> This patchset changes IA64 to handle multiple sets of dma mapping API
> in the common way (as X86, SPARC, and POWER do):
Do you have any plans to update sparc too?
Maybe it is not relevant.
Sam
next prev parent reply other threads:[~2009-01-07 19:55 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-05 14:36 [PATCH 0/13] IA64: unifying ways to handle multiple sets of dma mapping ops FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 01/13] add map/unmap_single_attr and map/unmap_sg_attr to struct dma_mapping_ops FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 02/13] add dma_mapping_ops for SBA IOMMU FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 03/13] add dma_mapping_ops for SWIOTLB and " FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 04/13] add dma_mapping_ops for intel-iommu FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 05/13] add dma_mapping_ops for SGI Altix FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 06/13] add dma_mapping_ops for SWIOTLB FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 07/13] set up dma_ops appropriately FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 08/13] convert the DMA API to use dma_ops FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 09/13] remove dma operations in struct ia64_machine_vector FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 10/13] make sn DMA mapping functions static FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 11/13] add dma_get_ops to struct ia64_machine_vector FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 12/13] remove hwsw_dma_ops FUJITA Tomonori
2009-01-05 14:36 ` [PATCH 13/13] make sba DMA mapping functions static FUJITA Tomonori
2009-01-07 19:56 ` Sam Ravnborg [this message]
2009-01-08 1:55 ` [PATCH 0/13] IA64: unifying ways to handle multiple sets of dma mapping ops FUJITA Tomonori
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