From: Christoph Hellwig <hch-jcswGhMUV9g@public.gmane.org>
To: iommu-cunTk1MwBs9QetFLy7KEm3xJsTq8ys+cHZ5vskTnxNA@public.gmane.org
Cc: linux-mips-6z/3iImG2C8G8FEW9MqTrA@public.gmane.org,
Greg Kroah-Hartman
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Paul Burton <paul.burton-8NJIiSa5LzA@public.gmane.org>,
Robin Murphy <robin.murphy-5wv7dgnIgG8@public.gmane.org>
Subject: merge dma_direct_ops and dma_noncoherent_ops v2
Date: Mon, 10 Sep 2018 08:05:28 +0200 [thread overview]
Message-ID: <20180910060533.27172-1-hch@lst.de> (raw)
While most architectures are either always or never dma coherent for a
given build, the arm, arm64, mips and soon arc architectures can have
different dma coherent settings on a per-device basis. Additionally
some mips builds can decide at boot time if dma is coherent or not.
I've started to look into handling noncoherent dma in swiotlb, and
moving the dma-iommu ops into common code [1], and for that we need a
generic way to check if a given device is coherent or not. Moving
this flag into struct device also simplifies the conditionally coherent
architecture implementations.
These patches are also available in a git tree given that they have
a few previous posted dependencies:
git://git.infradead.org/users/hch/misc.git dma-direct-noncoherent-merge
Gitweb:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-direct-noncoherent-merge
Changes since v1:
- rebased to the latest Linus' tree which includes coherent dma support
for arc
- a couple tidyups suggested by Paul Burton
WARNING: multiple messages have this Message-ID (diff)
From: Christoph Hellwig <hch@lst.de>
To: iommu@lists.linux-foundation.org
Cc: Marek Szyprowski <m.szyprowski@samsung.com>,
Robin Murphy <robin.murphy@arm.com>,
Paul Burton <paul.burton@mips.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-mips@linux-mips.org, linux-kernel@vger.kernel.org
Subject: merge dma_direct_ops and dma_noncoherent_ops v2
Date: Mon, 10 Sep 2018 08:05:28 +0200 [thread overview]
Message-ID: <20180910060533.27172-1-hch@lst.de> (raw)
While most architectures are either always or never dma coherent for a
given build, the arm, arm64, mips and soon arc architectures can have
different dma coherent settings on a per-device basis. Additionally
some mips builds can decide at boot time if dma is coherent or not.
I've started to look into handling noncoherent dma in swiotlb, and
moving the dma-iommu ops into common code [1], and for that we need a
generic way to check if a given device is coherent or not. Moving
this flag into struct device also simplifies the conditionally coherent
architecture implementations.
These patches are also available in a git tree given that they have
a few previous posted dependencies:
git://git.infradead.org/users/hch/misc.git dma-direct-noncoherent-merge
Gitweb:
http://git.infradead.org/users/hch/misc.git/shortlog/refs/heads/dma-direct-noncoherent-merge
Changes since v1:
- rebased to the latest Linus' tree which includes coherent dma support
for arc
- a couple tidyups suggested by Paul Burton
next reply other threads:[~2018-09-10 6:05 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-10 6:05 Christoph Hellwig [this message]
2018-09-10 6:05 ` merge dma_direct_ops and dma_noncoherent_ops v2 Christoph Hellwig
2018-09-10 6:05 ` [PATCH 3/5] dma-mapping: merge direct and noncoherent ops Christoph Hellwig
[not found] ` <20180910060533.27172-1-hch-jcswGhMUV9g@public.gmane.org>
2018-09-10 6:05 ` [PATCH 1/5] MIPS: don't select DMA_MAYBE_COHERENT from DMA_PERDEV_COHERENT Christoph Hellwig
2018-09-10 6:05 ` Christoph Hellwig
2018-09-10 6:05 ` [PATCH 2/5] dma-mapping: move the dma_coherent flag to struct device Christoph Hellwig
2018-09-10 6:05 ` Christoph Hellwig
2018-09-10 15:19 ` Robin Murphy
2018-09-10 15:47 ` Christoph Hellwig
[not found] ` <20180910154747.GA23578-jcswGhMUV9g@public.gmane.org>
2018-09-10 16:06 ` Robin Murphy
2018-09-10 16:06 ` Robin Murphy
2018-09-11 6:48 ` Christoph Hellwig
2018-09-11 6:58 ` Christoph Hellwig
2018-09-10 16:13 ` Greg Kroah-Hartman
[not found] ` <20180910161350.GA10380-U8xfFu+wG4EAvxtiuMwx3w@public.gmane.org>
2018-09-11 6:46 ` Christoph Hellwig
2018-09-11 6:46 ` Christoph Hellwig
[not found] ` <20180911064636.GA6214-jcswGhMUV9g@public.gmane.org>
2018-09-11 8:19 ` Greg Kroah-Hartman
2018-09-11 8:19 ` Greg Kroah-Hartman
2018-09-10 6:05 ` [PATCH 4/5] dma-mapping: consolidate the dma mmap implementations Christoph Hellwig
2018-09-10 6:05 ` Christoph Hellwig
2018-09-10 6:05 ` [PATCH 5/5] dma-mapping: support non-coherent devices in dma_common_get_sgtable Christoph Hellwig
2018-09-10 6:05 ` Christoph Hellwig
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