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Date: Fri, 03 Apr 2009 11:38:34 -0700
From: Dan Williams <dan.j.williams@...el.com>
To: Linus Torvalds <torvalds@...ux-foundation.org>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: Maciej Sosnowski <maciej.sosnowski@...el.com>,
Guennadi Liakhovetski <lg@...x.de>,
Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>,
Atsushi Nemoto <anemo@....ocn.ne.jp>,
linux-kernel <linux-kernel@...r.kernel.org>
Subject: [GIT PULL]: dmaengine update for 2.6.30
Hi Linus, please pull from...
git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx.git next
...to receive:
Atsushi Nemoto (1):
dmaengine: Add privatecnt to revert DMA_PRIVATE property
Dan Williams (7):
dmaengine: fail device registration if channel registration fails
dmaengine: initialize tx_list in dma_async_tx_descriptor_init
dmaengine: kill some unused headers
async_tx: provide __async_inline for HAS_DMA=n archs
dmaengine: allow dma support for async_tx to be toggled
dmatest: add xor test
dmatest: add dma interrupts and callbacks
Guennadi Liakhovetski (4):
dma: ipu_idmac driver cosmetic clean-up
dma: improve section assignment in i.MX31 IPU DMA driver
dma: i.MX31 IPU DMA robustness improvements
dma: Add SoF and EoF debugging to ipu_idmac.c, minor cleanup
Hans-Christian Egtvedt (1):
dw_dmac: add cyclic API to DW DMA driver
Nothing too exciting this time around, just some driver updates, xor
support for dmatest, and some cleanups. All but the last two have had
exposure in -next, at least long enough for Guennadi to spot and fix a
regression before it hit mainline.
Commit "dw_dmac: add cyclic API to DW DMA driver" was applied recently,
but it comes with an Ack from Haavard and only adds new functionality.
Commit "dma: Add SoF and EoF debugging to ipu_idmac.c, minor cleanup" is
also a bit late but appears to be harmless.
crypto/async_tx/async_tx.c | 6 +-
crypto/async_tx/async_xor.c | 7 +-
drivers/dma/Kconfig | 11 ++
drivers/dma/dmaengine.c | 60 ++++++--
drivers/dma/dmatest.c | 307 +++++++++++++++++++++++++-----------
drivers/dma/dw_dmac.c | 333 ++++++++++++++++++++++++++++++++++++++-
drivers/dma/dw_dmac_regs.h | 7 +-
drivers/dma/fsldma.c | 1 -
drivers/dma/ioat_dma.c | 1 -
drivers/dma/iop-adma.c | 1 -
drivers/dma/ipu/ipu_idmac.c | 371 +++++++++++++++++++++++++++++--------------
drivers/dma/ipu/ipu_irq.c | 2 +-
drivers/dma/mv_xor.c | 1 -
include/linux/async_tx.h | 9 +
include/linux/dmaengine.h | 30 +++-
include/linux/dw_dmac.h | 19 +++
16 files changed, 925 insertions(+), 241 deletions(-)
Thanks,
Dan
commit 8c6db1bbf80123839ec87bdd6cb364aea384623d
Author: Guennadi Liakhovetski <lg@...x.de>
Date: Thu Apr 2 11:36:58 2009 +0200
dma: Add SoF and EoF debugging to ipu_idmac.c, minor cleanup
Add Start-of-Frame and End-of-Frame debugging to ipu_idmac.c, in the
future it might also be needed for the actual video processing in
mx3-camera, at which point, the ISRs will have to be transferred to
mx3_camera.c, for which ipu_irq_map() and ipu_irq_unmap() functions will
have to be exported.
Also simplify a couple of pointer-dereferences.
Signed-off-by: Guennadi Liakhovetski <lg@...x.de>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit d9de451989a88a2003ca06e524aca4665c0c7f06
Author: Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>
Date: Wed Apr 1 15:47:02 2009 +0200
dw_dmac: add cyclic API to DW DMA driver
This patch adds a cyclic DMA interface to the DW DMA driver. This is
very useful if you want to use the DMA controller in combination with a
sound device which uses cyclic buffers.
Using a DMA channel for cyclic DMA will disable the possibility to use
it as a normal DMA engine until the user calls the cyclic free function
on the DMA channel. Also a cyclic DMA list can not be prepared if the
channel is already active.
Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@...el.com>
Acked-by: Haavard Skinnemoen <haavard.skinnemoen@...el.com>
Acked-by: Maciej Sosnowski <maciej.sosnowski@...el.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 0f571515c332e00b3515dbe0859ceaa30ab66e00
Author: Atsushi Nemoto <anemo@....ocn.ne.jp>
Date: Fri Mar 6 20:07:14 2009 +0900
dmaengine: Add privatecnt to revert DMA_PRIVATE property
Currently dma_request_channel() set DMA_PRIVATE capability but never
clear it. So if a public channel was once grabbed by
dma_request_channel(), the device stay PRIVATE forever. Add
privatecnt member to dma_device to correctly revert it.
[lg@...x.de: fix bad usage of 'chan' in dma_async_device_register]
Signed-off-by: Atsushi Nemoto <anemo@....ocn.ne.jp>
Acked-by: Maciej Sosnowski <maciej.sosnowski@...el.com>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit e44e0aa3cfa97cddff01704751a4b25151830c72
Author: Dan Williams <dan.j.williams@...el.com>
Date: Wed Mar 25 09:13:25 2009 -0700
dmatest: add dma interrupts and callbacks
Use the callback infrastructure to report driver/hardware hangs or
missed interrupts. Since this makes the test threads much more
aggressive (from: explicit 1ms sleep to: wait_for_completion) we set the
nice value to 10 so as to not swamp legitimate tasks.
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit b54d5cb9156868fb4f27ccd46a3afb0bf3ef8e0c
Author: Dan Williams <dan.j.williams@...el.com>
Date: Wed Mar 25 09:13:25 2009 -0700
dmatest: add xor test
Extend dmatest to launch a thread per supported operation type and add
an xor test.
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 729b5d1b8ec72c28e99840b3f300ba67726e3ab9
Author: Dan Williams <dan.j.williams@...el.com>
Date: Wed Mar 25 09:13:25 2009 -0700
dmaengine: allow dma support for async_tx to be toggled
Provide a config option for blocking the allocation of dma channels to
the async_tx api.
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 06164f3194e01ea4c76941ac60f541d656c8975f
Author: Dan Williams <dan.j.williams@...el.com>
Date: Wed Mar 25 09:13:25 2009 -0700
async_tx: provide __async_inline for HAS_DMA=n archs
To allow an async_tx routine to be compiled away on HAS_DMA=n arch it
needs to be declared __always_inline otherwise the compiler may emit
code and cause a link error.
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 54aee6a5f560d0e1bf3f39987c6ebe06daeb0ce1
Author: Dan Williams <dan.j.williams@...el.com>
Date: Wed Mar 25 09:13:24 2009 -0700
dmaengine: kill some unused headers
The dmaengine redux left some unneeded headers in
include/linux/dmaengine.h, clean them up.
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit ccccce229c633a92c42cd1a40c0738d7b0d12644
Author: Dan Williams <dan.j.williams@...el.com>
Date: Wed Mar 25 09:13:24 2009 -0700
dmaengine: initialize tx_list in dma_async_tx_descriptor_init
Centralize this common initialization (and one case where ipu_idmac is
duplicating ->chan initialization).
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 8d47bae004f062630f69f7f83d098424252e232d
Author: Guennadi Liakhovetski <g.liakhovetski@....de>
Date: Wed Mar 25 09:13:24 2009 -0700
dma: i.MX31 IPU DMA robustness improvements
Add DMA error handling to the ISR, move common code fragments to functions, fix
scatter-gather element queuing in the ISR, survive channel freeing and
re-allocation in a quick succession.
Signed-off-by: Guennadi Liakhovetski <lg@...x.de>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 234f2df56f5b05756c444edc9879145deddf69f4
Author: Guennadi Liakhovetski <lg@...x.de>
Date: Wed Mar 25 09:13:24 2009 -0700
dma: improve section assignment in i.MX31 IPU DMA driver
The i.MX31 IPU DMA driver is a platform driver, but doesn't need hotplug, so we
can use __init and __exit function attributes.
Signed-off-by: Guennadi Liakhovetski <lg@...x.de>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 0149f7d5dc66dcffbb044ba005a5378a5864d2a3
Author: Guennadi Liakhovetski <lg@...x.de>
Date: Wed Mar 25 09:13:23 2009 -0700
dma: ipu_idmac driver cosmetic clean-up
Remove superfluous semicolons, update comments.
Signed-off-by: Guennadi Liakhovetski <lg@...x.de>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
commit 257b17ca030387cb17314cd1851507bdd1b4ddd5
Author: Dan Williams <dan.j.williams@...el.com>
Date: Wed Mar 25 09:13:23 2009 -0700
dmaengine: fail device registration if channel registration fails
Atsushi points out:
"If alloc_percpu or kzalloc failed, chan_id does not match with its
position in device->channels list.
And above "continue" looks buggy anyway. Keeping incomplete channels
in device->channels list looks very dangerous..."
Also, fix up leakage of idr_ref in the idr_pre_get() and channel init
fail cases.
Reported-by: Atsushi Nemoto <anemo@....ocn.ne.jp>
Signed-off-by: Dan Williams <dan.j.williams@...el.com>
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