From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: stepanm@codeaurora.org, arnd@arndb.de,
linux-arm-kernel@lists.infradead.org,
linux-arm-msm@vger.kernel.org, dwalker@codeaurora.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] arm: msm: Add System MMU support.
Date: Sat, 31 Jul 2010 12:30:49 +1000 [thread overview]
Message-ID: <1280543449.1902.29.camel@pasglop> (raw)
In-Reply-To: <20100729123512Y.fujita.tomonori@lab.ntt.co.jp>
On Thu, 2010-07-29 at 12:35 +0900, FUJITA Tomonori wrote:
> Don't confuse the IOMMU interface with the DMA API that Arnd
> mentioned.
>
> They are not related at all.
>
> The DMA API is defined in Documentation/DMA-API.txt.
>
> Arnd told you that include/asm-generic/dma-mapping-common.h is the
> library to support the DMA API with multiple IOMMUs. Lots of
> architectures (x86, powerpc, sh, alpha, ia64, microblaze, sparc)
> use it.
Also, some of the iommu layer actually originates from powerpc.
Cheers,
Ben.
WARNING: multiple messages have this Message-ID (diff)
From: benh@kernel.crashing.org (Benjamin Herrenschmidt)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] arm: msm: Add System MMU support.
Date: Sat, 31 Jul 2010 12:30:49 +1000 [thread overview]
Message-ID: <1280543449.1902.29.camel@pasglop> (raw)
In-Reply-To: <20100729123512Y.fujita.tomonori@lab.ntt.co.jp>
On Thu, 2010-07-29 at 12:35 +0900, FUJITA Tomonori wrote:
> Don't confuse the IOMMU interface with the DMA API that Arnd
> mentioned.
>
> They are not related at all.
>
> The DMA API is defined in Documentation/DMA-API.txt.
>
> Arnd told you that include/asm-generic/dma-mapping-common.h is the
> library to support the DMA API with multiple IOMMUs. Lots of
> architectures (x86, powerpc, sh, alpha, ia64, microblaze, sparc)
> use it.
Also, some of the iommu layer actually originates from powerpc.
Cheers,
Ben.
next prev parent reply other threads:[~2010-07-31 2:31 UTC|newest]
Thread overview: 96+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-27 22:41 [PATCH 1/2] arm: msm: Add System MMU support Stepan Moskovchenko
2010-07-27 22:41 ` Stepan Moskovchenko
2010-07-27 22:43 ` Daniel Walker
2010-07-27 22:43 ` Daniel Walker
2010-07-28 8:39 ` Arnd Bergmann
2010-07-28 8:39 ` Arnd Bergmann
2010-07-28 17:39 ` stepanm
2010-07-28 17:39 ` stepanm at codeaurora.org
2010-07-28 17:50 ` Arnd Bergmann
2010-07-28 17:50 ` Arnd Bergmann
2010-07-28 21:21 ` Russell King - ARM Linux
2010-07-28 21:21 ` Russell King - ARM Linux
2010-07-29 4:15 ` FUJITA Tomonori
2010-07-29 4:15 ` FUJITA Tomonori
2010-07-29 8:12 ` Arnd Bergmann
2010-07-29 8:12 ` Arnd Bergmann
2010-07-29 11:47 ` Russell King - ARM Linux
2010-07-29 11:47 ` Russell King - ARM Linux
2010-07-30 6:14 ` FUJITA Tomonori
2010-07-30 6:14 ` FUJITA Tomonori
2010-07-29 0:58 ` stepanm
2010-07-29 0:58 ` stepanm at codeaurora.org
2010-07-29 3:35 ` FUJITA Tomonori
2010-07-29 3:35 ` FUJITA Tomonori
2010-07-29 8:26 ` Arnd Bergmann
2010-07-29 8:26 ` Arnd Bergmann
2010-07-29 8:35 ` FUJITA Tomonori
2010-07-29 8:35 ` FUJITA Tomonori
2010-07-29 8:40 ` Roedel, Joerg
2010-07-29 8:40 ` Roedel, Joerg
2010-07-29 8:46 ` FUJITA Tomonori
2010-07-29 8:46 ` FUJITA Tomonori
2010-07-29 9:06 ` Roedel, Joerg
2010-07-29 9:06 ` Roedel, Joerg
2010-07-29 9:14 ` FUJITA Tomonori
2010-07-29 9:14 ` FUJITA Tomonori
2010-07-29 9:25 ` Roedel, Joerg
2010-07-29 9:25 ` Roedel, Joerg
2010-07-29 9:28 ` Roedel, Joerg
2010-07-29 9:28 ` Roedel, Joerg
2010-07-29 9:44 ` FUJITA Tomonori
2010-07-29 9:44 ` FUJITA Tomonori
2010-07-29 10:01 ` Roedel, Joerg
2010-07-29 10:01 ` Roedel, Joerg
2010-07-29 11:25 ` Arnd Bergmann
2010-07-29 11:25 ` Arnd Bergmann
2010-07-29 12:12 ` Roedel, Joerg
2010-07-29 12:12 ` Roedel, Joerg
2010-07-29 13:01 ` Arnd Bergmann
2010-07-29 13:01 ` Arnd Bergmann
2010-07-30 5:19 ` stepanm
2010-07-30 5:19 ` stepanm at codeaurora.org
2010-07-30 8:01 ` Arnd Bergmann
2010-07-30 8:01 ` Arnd Bergmann
2010-07-30 16:25 ` stepanm
2010-07-30 16:25 ` stepanm at codeaurora.org
2010-07-30 21:59 ` Arnd Bergmann
2010-07-30 21:59 ` Arnd Bergmann
2010-07-30 22:58 ` stepanm
2010-07-30 22:58 ` stepanm at codeaurora.org
2010-07-31 9:37 ` Arnd Bergmann
2010-07-31 9:37 ` Arnd Bergmann
2010-08-02 7:58 ` Roedel, Joerg
2010-08-02 7:58 ` Roedel, Joerg
2010-08-02 20:29 ` Zach Pfeffer
2010-08-02 20:29 ` Zach Pfeffer
2010-08-03 9:23 ` Roedel, Joerg
2010-08-03 9:23 ` Roedel, Joerg
2010-08-03 18:43 ` Stepan Moskovchenko
2010-08-03 18:43 ` Stepan Moskovchenko
2010-08-04 9:52 ` Roedel, Joerg
2010-08-04 9:52 ` Roedel, Joerg
2010-07-31 3:15 ` Benjamin Herrenschmidt
2010-07-31 3:15 ` Benjamin Herrenschmidt
2010-08-02 7:48 ` Roedel, Joerg
2010-08-02 7:48 ` Roedel, Joerg
2010-08-02 8:03 ` Benjamin Herrenschmidt
2010-08-02 8:03 ` Benjamin Herrenschmidt
2010-08-02 8:10 ` Roedel, Joerg
2010-08-02 8:10 ` Roedel, Joerg
2010-08-02 8:30 ` FUJITA Tomonori
2010-08-02 8:30 ` FUJITA Tomonori
2010-08-02 9:03 ` Russell King - ARM Linux
2010-08-02 9:03 ` Russell King - ARM Linux
2010-08-02 9:20 ` FUJITA Tomonori
2010-08-02 9:20 ` FUJITA Tomonori
2010-08-02 10:04 ` Russell King - ARM Linux
2010-08-02 10:04 ` Russell King - ARM Linux
2010-08-02 15:26 ` FUJITA Tomonori
2010-08-02 15:26 ` FUJITA Tomonori
2010-08-02 9:45 ` Roedel, Joerg
2010-08-02 9:45 ` Roedel, Joerg
2010-08-02 8:35 ` Roedel, Joerg
2010-08-02 8:35 ` Roedel, Joerg
2010-07-31 2:30 ` Benjamin Herrenschmidt [this message]
2010-07-31 2:30 ` Benjamin Herrenschmidt
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