01 Nov, 2011
1 commit
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Signed-off-by: Paul Gortmaker
05 Sep, 2011
4 commits
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Prepared descriptors that are not submitted will not be freed. Add
prepared descriptor to a list to be able to release them upon
dmaengine_terminate_all().Signed-off-by: Per Forlin
Acked-by: Linus Walleij
Signed-off-by: Vinod Koul -
The client list may exist in two lists at the same time. This makes free
fail since the same desc is freed multiple times. Remove desc from
client list when adding it to the pending queue. Move free of client owned
descriptors from free_dma() to terminate_all().Unable to handle kernel paging request at virtual address 00100104
pgd = dea8c000
[00100104] *pgd=1ea62831, *pte=00000000, *ppte=00000000
Internal error: Oops: 817 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 Not tainted (3.1.0-rc3+ #58)
PC is at d40_free_chan_resources+0x64/0x330Signed-off-by: Per Forlin
Acked-by: Linus Walleij
Signed-off-by: Vinod Koul -
d40_desc_free() already calls d40_pool_lli_free().
Signed-off-by: Per Forlin
Acked-by: Linus Walleij
Signed-off-by: Vinod Koul -
Signed-off-by: Per Forlin
Acked-by: Linus Walleij
Signed-off-by: Vinod Koul
02 Aug, 2011
1 commit
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* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (37 commits)
Improve slave/cyclic DMA engine documentation
dmaengine: pl08x: handle the rest of enums in pl08x_width
DMA: PL08x: cleanup selection of burst size
DMA: PL08x: avoid recalculating cctl at each prepare
DMA: PL08x: cleanup selection of buswidth
DMA: PL08x: constify plchan->cd and plat->slave_channels
DMA: PL08x: separately store source/destination cctl
DMA: PL08x: separately store source/destination slave address
DMA: PL08x: clean up LLI debugging
DMA: PL08x: select LLI bus only once per LLI setup
DMA: PL08x: remove unused constants
ARM: mxs-dma: reset after disable channel
dma: intel_mid_dma: remove redundant pci_set_drvdata calls
dma: mxs-dma: fix unterminated platform_device_id table
dmaengine: pl330: make platform data optional
dmaengine: imx-sdma: return proper error if kzalloc fails
pch_dma: Fix CTL register access issue
dmaengine: mxs-dma: skip request_irq for NO_IRQ
dmaengine/coh901318: fix slave submission semantics
dmaengine/ste_dma40: allow memory buswidth/burst to be configured
...Fix trivial whitespace conflict in drivers/dma/mv_xor.c
14 Jul, 2011
5 commits
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Currently the runtime config implementation forces the memory side
parameters to be the same as the peripheral side. Allow these to be
different, and check for misconfiguration.Signed-off-by: Rabin Vincent
Reviewed-by: Ulf HANSSON
Tested-by: Stefan Nilsson
Reviewed-by: Per Forlin
Reviewed-by: Srinidhi Kasagar
Cc: Robert Marklund
Signed-off-by: Linus Walleij
Signed-off-by: Vinod Koul -
The DMA40 is not a PrimeCell from ARM, but it still use the same
ID registers. So let's utilize the existing macros in the
PrimeCell header to identify manufacturer and revision of the IP
block instead of reinventing the wheel.Cc: Robert Marklund
Cc: Per Forlin
Cc: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Vinod Koul -
This function may be initiated from IRQ context, so the allocation
must allocate NOWAIT memory.Signed-off-by: Robert Marklund
Reviewed-by: Rabin Vincent
Reviewed-by: Philippe Langlais
Signed-off-by: Linus Walleij
Signed-off-by: Vinod Koul -
Missing documentation creates kernel-doc warnings, so add
the documenation.Signed-off-by: Om Prakash
Reviewed-by: Rabin Vincent
Reviewed-by: Jonas Aberg
Reviewed-by: Srinidhi Kasagar
Signed-off-by: Linus Walleij
Signed-off-by: Vinod Koul -
tx_submit will add descriptors to the pending queue. Issue pending
will then move the pending descriptors to the transfer queue.Signed-off-by: Per Forlin
Signed-off-by: Vinod Koul
22 Jun, 2011
1 commit
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Remove linux/mm.h inclusion from netdevice.h -- it's unused (I've checked manually).
To prevent mm.h inclusion via other channels also extract "enum dma_data_direction"
definition into separate header. This tiny piece is what gluing netdevice.h with mm.h
via "netdevice.h => dmaengine.h => dma-mapping.h => scatterlist.h => mm.h".
Removal of mm.h from scatterlist.h was tried and was found not feasible
on most archs, so the link was cutoff earlier.Hope people are OK with tiny include file.
Note, that mm_types.h is still dragged in, but it is a separate story.
Signed-off-by: Alexey Dobriyan
Signed-off-by: David S. Miller
29 May, 2011
1 commit
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* 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: (33 commits)
x86: poll waiting for I/OAT DMA channel status
maintainers: add dma engine tree details
dmaengine: add TODO items for future work on dma drivers
dmaengine: Add API documentation for slave dma usage
dmaengine/dw_dmac: Update maintainer-ship
dmaengine: move link order
dmaengine/dw_dmac: implement pause and resume in dwc_control
dmaengine/dw_dmac: Replace spin_lock* with irqsave variants and enable submission from callback
dmaengine/dw_dmac: Divide one sg to many desc, if sg len is greater than DWC_MAX_COUNT
dmaengine/dw_dmac: set residue as total len in dwc_tx_status if status is !DMA_SUCCESS
dmaengine/dw_dmac: don't call callback routine in case dmaengine_terminate_all() is called
dmaengine: at_hdmac: pause: no need to wait for FIFO empty
pch_dma: modify pci device table definition
pch_dma: Support new device ML7223 IOH
pch_dma: Support I2S for ML7213 IOH
pch_dma: Fix DMA setting issue
pch_dma: modify for checkpatch
pch_dma: fix dma direction issue for ML7213 IOH video-in
dmaengine: at_hdmac: use descriptor chaining help function
dmaengine: at_hdmac: implement pause and resume in atc_control
...Fix up trivial conflict in drivers/dma/dw_dmac.c
19 May, 2011
1 commit
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Move the dmaengine subsystem up early in the drivers Makefile so
DMA is made available early to all drivers, just like e.g.
regulators. Now even regulators can use DMA on the same initlevel.
As a result we can bump the ste_dma40 and coh901318 dmaengine
drivers down one initlevel to subsys_init().Signed-off-by: Linus Walleij
Signed-off-by: Vinod Koul
09 May, 2011
1 commit
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The compiler nowadays moans about possibly non-assigned variable.
Fix this by default-assigning 0.Signed-off-by: Philippe Langlais
Signed-off-by: Linus Walleij
Signed-off-by: Vinod Koul
31 Mar, 2011
1 commit
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Fixes generated by 'codespell' and manually reviewed.
Signed-off-by: Lucas De Marchi
31 Jan, 2011
24 commits
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Support cyclic transfers, which are useful for ALSA drivers.
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
The current implementation of DMA_TERMINATE_ALL leaves ongoing transfers
running. Fix it.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
The DMA_SG cap is enabled on the wrong channel, and the pointers are repeatedly
set incorrectly. Fix it and combine the ops settings to a common function.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
These register writes are better placed in the main source file rather than
ll.c.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
The dmaengine framework has the API for this now.
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
The desc init code can be shared between the mem and slave prep routines.
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
To simplify the code.
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Map and unmap the LLIs and use dma_sync_single_for_device() appropriately
instead of mapping and never unmapping them.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Map the buffer once and use dma_sync*() appropriately instead of mapping the
buffer over and over without unmapping it.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
ALIGN(x * y, y) == x * y
ALIGN(aligned + x * y, y) == aligned + x * yAcked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
DB8500v2's DMA40 (revision 3) allows setting event lines as high priority and
real time.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
And add DB8500v2 information.
Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
Almost every use of dev_err in this driver prints the function name. Abstract
out wrappers to help with this and reduce code duplication.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams -
The somewhat confusing check
d40c->log_num == D40_PHY_CHAN
and its variants are used in several places to check if a channel is logical or
physical. Use appropriately named helpers to do this to make the code more
readable.Acked-by: Per Forlin
Acked-by: Jonas Aaberg
Signed-off-by: Rabin Vincent
Signed-off-by: Linus Walleij
Signed-off-by: Dan Williams