From: Arnd Bergmann <arnd@arndb.de>
To: Stepan Moskovchenko <stepanm@codeaurora.org>
Cc: dwalker@codeaurora.org, linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org
Subject: Re: [PATCH 1/2] arm: msm: Add System MMU support.
Date: Wed, 28 Jul 2010 10:39:44 +0200 [thread overview]
Message-ID: <201007281039.44883.arnd@arndb.de> (raw)
In-Reply-To: <1280270466-13503-1-git-send-email-stepanm@codeaurora.org>
On Wednesday 28 July 2010 00:41:06 Stepan Moskovchenko wrote:
>
> Add support for the System MMUs found on the 8x60 and 8x72
> families of Qualcomm chips. These SMMUs allow virtualization
> of the address space used by most of the multimedia cores
> on these chips.
>
How is this different from an IOMMU?
>From a very brief look, it seems that you should be using the
existing dma-mapping APIs here instead of making up your own.
Arnd
WARNING: multiple messages have this Message-ID (diff)
From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] arm: msm: Add System MMU support.
Date: Wed, 28 Jul 2010 10:39:44 +0200 [thread overview]
Message-ID: <201007281039.44883.arnd@arndb.de> (raw)
In-Reply-To: <1280270466-13503-1-git-send-email-stepanm@codeaurora.org>
On Wednesday 28 July 2010 00:41:06 Stepan Moskovchenko wrote:
>
> Add support for the System MMUs found on the 8x60 and 8x72
> families of Qualcomm chips. These SMMUs allow virtualization
> of the address space used by most of the multimedia cores
> on these chips.
>
How is this different from an IOMMU?
>From a very brief look, it seems that you should be using the
existing dma-mapping APIs here instead of making up your own.
Arnd
next prev parent reply other threads:[~2010-07-28 8:40 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 [this message]
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
2010-07-31 2:30 ` Benjamin Herrenschmidt
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