From: Daniel Vetter <daniel@ffwll.ch>
To: Alexandre Bailon <abailon@baylibre.com>
Cc: linux-remoteproc@vger.kernel.org, ohad@wizery.com,
gpain@baylibre.com, stephane.leprovost@mediatek.com,
jstephan@baylibre.com, linux-kernel@vger.kernel.org,
dri-devel@lists.freedesktop.org, linaro-mm-sig@lists.linaro.org,
mturquette@baylibre.com, bjorn.andersson@linaro.org,
christian.koenig@amd.com, linux-media@vger.kernel.org
Subject: Re: [RFC PATCH 0/4] Add a RPMsg driver to support AI Processing Unit (APU)
Date: Thu, 1 Oct 2020 10:48:56 +0200 [thread overview]
Message-ID: <20201001084856.GC438822@phenom.ffwll.local> (raw)
In-Reply-To: <20200930115350.5272-1-abailon@baylibre.com>
On Wed, Sep 30, 2020 at 01:53:46PM +0200, Alexandre Bailon wrote:
> This adds a RPMsg driver that implements communication between the CPU and an
> APU.
> This uses VirtIO buffer to exchange messages but for sharing data, this uses
> a dmabuf, mapped to be shared between CPU (userspace) and APU.
> The driver is relatively generic, and should work with any SoC implementing
> hardware accelerator for AI if they use support remoteproc and VirtIO.
>
> For the people interested by the firmware or userspace library,
> the sources are available here:
> https://github.com/BayLibre/open-amp/tree/v2020.01-mtk/apps/examples/apu
Since this has open userspace (from a very cursory look), and smells very
much like an acceleration driver, and seems to use dma-buf for memory
management: Why is this not just a drm driver?
-Daniel
>
> Alexandre Bailon (3):
> Add a RPMSG driver for the APU in the mt8183
> rpmsg: apu_rpmsg: update the way to store IOMMU mapping
> rpmsg: apu_rpmsg: Add an IOCTL to request IOMMU mapping
>
> Julien STEPHAN (1):
> rpmsg: apu_rpmsg: Add support for async apu request
>
> drivers/rpmsg/Kconfig | 9 +
> drivers/rpmsg/Makefile | 1 +
> drivers/rpmsg/apu_rpmsg.c | 752 +++++++++++++++++++++++++++++++++
> drivers/rpmsg/apu_rpmsg.h | 52 +++
> include/uapi/linux/apu_rpmsg.h | 47 +++
> 5 files changed, 861 insertions(+)
> create mode 100644 drivers/rpmsg/apu_rpmsg.c
> create mode 100644 drivers/rpmsg/apu_rpmsg.h
> create mode 100644 include/uapi/linux/apu_rpmsg.h
>
> --
> 2.26.2
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
WARNING: multiple messages have this Message-ID (diff)
From: Daniel Vetter <daniel@ffwll.ch>
To: Alexandre Bailon <abailon@baylibre.com>
Cc: ohad@wizery.com, linaro-mm-sig@lists.linaro.org,
stephane.leprovost@mediatek.com, christian.koenig@amd.com,
mturquette@baylibre.com, linux-remoteproc@vger.kernel.org,
linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
bjorn.andersson@linaro.org, gpain@baylibre.com,
jstephan@baylibre.com, linux-media@vger.kernel.org
Subject: Re: [RFC PATCH 0/4] Add a RPMsg driver to support AI Processing Unit (APU)
Date: Thu, 1 Oct 2020 10:48:56 +0200 [thread overview]
Message-ID: <20201001084856.GC438822@phenom.ffwll.local> (raw)
In-Reply-To: <20200930115350.5272-1-abailon@baylibre.com>
On Wed, Sep 30, 2020 at 01:53:46PM +0200, Alexandre Bailon wrote:
> This adds a RPMsg driver that implements communication between the CPU and an
> APU.
> This uses VirtIO buffer to exchange messages but for sharing data, this uses
> a dmabuf, mapped to be shared between CPU (userspace) and APU.
> The driver is relatively generic, and should work with any SoC implementing
> hardware accelerator for AI if they use support remoteproc and VirtIO.
>
> For the people interested by the firmware or userspace library,
> the sources are available here:
> https://github.com/BayLibre/open-amp/tree/v2020.01-mtk/apps/examples/apu
Since this has open userspace (from a very cursory look), and smells very
much like an acceleration driver, and seems to use dma-buf for memory
management: Why is this not just a drm driver?
-Daniel
>
> Alexandre Bailon (3):
> Add a RPMSG driver for the APU in the mt8183
> rpmsg: apu_rpmsg: update the way to store IOMMU mapping
> rpmsg: apu_rpmsg: Add an IOCTL to request IOMMU mapping
>
> Julien STEPHAN (1):
> rpmsg: apu_rpmsg: Add support for async apu request
>
> drivers/rpmsg/Kconfig | 9 +
> drivers/rpmsg/Makefile | 1 +
> drivers/rpmsg/apu_rpmsg.c | 752 +++++++++++++++++++++++++++++++++
> drivers/rpmsg/apu_rpmsg.h | 52 +++
> include/uapi/linux/apu_rpmsg.h | 47 +++
> 5 files changed, 861 insertions(+)
> create mode 100644 drivers/rpmsg/apu_rpmsg.c
> create mode 100644 drivers/rpmsg/apu_rpmsg.h
> create mode 100644 include/uapi/linux/apu_rpmsg.h
>
> --
> 2.26.2
>
> _______________________________________________
> dri-devel mailing list
> dri-devel@lists.freedesktop.org
> https://lists.freedesktop.org/mailman/listinfo/dri-devel
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel
next prev parent reply other threads:[~2020-10-01 8:49 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-30 11:53 [RFC PATCH 0/4] Add a RPMsg driver to support AI Processing Unit (APU) Alexandre Bailon
2020-09-30 11:53 ` Alexandre Bailon
2020-09-30 11:53 ` [RFC PATCH 1/4] Add a RPMSG driver for the APU in the mt8183 Alexandre Bailon
2020-09-30 11:53 ` Alexandre Bailon
2020-10-14 22:55 ` Mathieu Poirier
2020-10-14 22:55 ` Mathieu Poirier
2020-10-15 16:33 ` Mathieu Poirier
2020-10-15 16:33 ` Mathieu Poirier
2021-07-20 8:24 ` Alexandre Bailon
2021-07-20 8:24 ` Alexandre Bailon
2020-09-30 11:53 ` [RFC PATCH 2/4] rpmsg: apu_rpmsg: Add support for async apu request Alexandre Bailon
2020-09-30 11:53 ` Alexandre Bailon
2020-09-30 11:53 ` [RFC PATCH 3/4] rpmsg: apu_rpmsg: update the way to store IOMMU mapping Alexandre Bailon
2020-09-30 11:53 ` Alexandre Bailon
2020-09-30 11:53 ` [RFC PATCH 4/4] rpmsg: apu_rpmsg: Add an IOCTL to request " Alexandre Bailon
2020-09-30 11:53 ` Alexandre Bailon
2020-10-01 8:48 ` Daniel Vetter [this message]
2020-10-01 8:48 ` [RFC PATCH 0/4] Add a RPMsg driver to support AI Processing Unit (APU) Daniel Vetter
2020-10-01 17:28 ` Alexandre Bailon
2020-10-01 17:28 ` Alexandre Bailon
2020-10-02 9:35 ` Daniel Vetter
2020-10-02 9:35 ` Daniel Vetter
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