platform_get_irq() prints the error message, so caller need not do so,
remove the error line in this driver for platform_get_irq()
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20191106163128.1980714-2-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
platform_get_irq() prints the error message, so caller need not do so,
remove the error line in this driver for platform_get_irq()
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/20191106163128.1980714-1-vkoul@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The remove misses to disable and unprepare jzdma->clk.
Add a call to clk_disable_unprepare to fix it.
Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Acked-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20191104161622.11758-1-hslester96@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add support for AXI Multichannel Direct Memory Access (AXI MCDMA)
core, which is a soft Xilinx IP core that provides high-bandwidth
direct memory access between memory and AXI4-Stream target peripherals.
The AXI MCDMA core provides scatter-gather interface with multiple
independent transmit and receive channels. The driver supports
device_prep_slave_sg slave transfer mode.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1571763622-29281-7-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Extend dma_config structure to store irq routine handle. It enables runtime
handler selection based on xdma_ip_type and serves as preparatory patch for
adding MCDMA IP support.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Suggested-by: Vinod Koul <vkoul@kernel.org>
Link: https://lore.kernel.org/r/1571763622-29281-6-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The AXI DMA multichannel support is deprecated in the IP and it is no
longer actively supported. For multichannel support, refer to the AXI
multichannel direct memory access IP product guide(PG228) and MCDMA
driver. So inline with it remove axidma multichannel support from
from the driver.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1571763622-29281-5-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add devicetree binding for Xilinx AXI Multichannel Direct Memory Access
(AXI MCDMA) IP. The AXI MCDMA provides high-bandwidth direct memory
access between memory and AXI4-Stream target peripherals. The AXI MCDMA
core provides a scatter-gather interface with multiple channel support
with independent configuration.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1571763622-29281-4-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Trivial formatting(keep compatible string one per line, caps change etc).
It doesn't modify the content of the binding.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1571763622-29281-3-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The AXI DMA multichannel support is deprecated in the IP and it is no
longer actively supported. For multichannel support, refer to the AXI
multichannel direct memory access IP product guide(PG228) and MCDMA
driver(added in the subsequent commits). Inline with it remove axidma
multichannel optional properties i.e xlnx,mcdma and dma-channels from
the binding description.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Acked-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1571763622-29281-2-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Like paRAM slots, channels could be used by other cores and in this case
we need to make sure that the driver do not alter these channels.
Handle the generic dma-channel-mask property to mark channels in a bitmap
which can not be used by Linux and convert the legacy rsv_chans if it is
provided by platform_data.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20191025073056.25450-4-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Similarly to paRAM slots, channels can be used by other cores.
The common dma-channel-mask property can be used for specifying the
available channels.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20191025073056.25450-3-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Make the dma-channel-mask to be usable for controllers with more than 32
channels.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20191025073056.25450-2-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Clang warns:
drivers/dma/fsl-dpaa2-qdma/dpdmai.c:148:25: warning: variable 'cfg' is
uninitialized when used within its own initialization [-Wuninitialized]
DPDMAI_CMD_CREATE(cmd, cfg);
~~~~~~~~~~~~~~~~~~~~~~~^~~~
drivers/dma/fsl-dpaa2-qdma/dpdmai.c:42:24: note: expanded from macro
'DPDMAI_CMD_CREATE'
typeof(_cfg) (cfg) = (_cfg); \
~~~ ^~~~
1 warning generated.
Looking at the preprocessed source, we can see that this is true.
int dpdmai_create(struct fsl_mc_io *mc_io, u32 cmd_flags,
const struct dpdmai_cfg *cfg, u16 *token)
{
struct fsl_mc_command cmd = { 0 };
int err;
cmd.header = mc_encode_cmd_header((((0x90E) << 4) | 0), cmd_flags, 0);
do {
typeof(cmd)(cmd) = (cmd);
typeof(cfg)(cfg) = (cfg);
((cmd).params[0] |= mc_enc((8), (8), (cfg)->priorities[0]));
((cmd).params[0] |= mc_enc((16), (8), (cfg)->priorities[1]));
} while (0);
I cannot see a good reason to create another version of cfg when the
parameter one will work perfectly fine and cmd can just be used as is.
Remove them to fix this warning.
Fixes: f2835adf8a ("dmaengine: fsl-dpaa2-qdma: Add the DPDMAI(Data Path DMA Interface) support")
Link: https://github.com/ClangBuiltLinux/linux/issues/746
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20191022171648.37732-1-natechancellor@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
platform_get_irq_byname() might return -errno which later would be cast
to an unsigned int and used in IRQ handling code leading to usage of
wrong ID and errors about wrong irq_base.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Peng Ma <peng.ma@nxp.com>
Tested-by: Peng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20191004150826.6656-1-krzk@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Whenever we reset the channel, we need to clear desc_pendingcount
along with desc_submitcount. Otherwise when a new transaction is
submitted, the irq coalesce level could be programmed to an incorrect
value in the axidma case.
This behavior can be observed when terminating pending transactions
with xilinx_dma_terminate_all() and then submitting new transactions
without releasing and requesting the channel.
Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1571150904-3988-8-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The driver should not run out of tx segments in normal operation. But,
if the user attempts to prepare a transaction with a large sg list,
the driver may not have enough free segments to accommodate the request.
Log a message at the debug level to inform the user in case they are
experiencing issues.
Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1571150904-3988-7-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Take advantage of dmaengine_desc_get_callback_invoke which allows either
a callback or callback_result to be specified. This can be useful when
using the AXI DMA transfer unknown quantities of data where the residue
contained in the result can be used to calculate the number of bytes
transferred.
Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1571150904-3988-6-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Introduce a function that can calculate residues for IPs that support it:
AXI DMA and CDMA.
Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1571150904-3988-5-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The dma api provides a single interface to get the appropriate callback
and invoke it directly. Prefer using it.
Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1571150904-3988-3-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
In descriptor cleanup the call to desc_callback_valid can be safely
removed as both callback pointers i.e callback_result and callback
are anyway checked in invoke(). There is no much benefit in having
redundant checks.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Nicholas Graumann <nick.graumann@gmail.com>
Reviewed-by: Appana Durga Kedareswara rao <appana.durga.rao@xilinx.com>
Link: https://lore.kernel.org/r/1571150904-3988-2-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Document the devicetree bindings for Socionext Milbeaut XDMAC
controller. Controller only supports Mem->Mem transfers. Number
of physical channels are determined by the number of irqs registered.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Link: https://lore.kernel.org/r/20191015033157.14656-1-jassisinghbrar@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Driver for Socionext Milbeaut HDMAC controller. The controller has
upto 8 floating channels, that need a predefined slave-id to work
from a set of slaves.
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Link: https://lore.kernel.org/r/20191015033359.14925-1-jassisinghbrar@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Document the devicetree bindings for Socionext Milbeaut HDMAC
controller. Controller has upto 8 floating channels, that need
a predefined slave-id to work from a set of slaves.
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Link: https://lore.kernel.org/r/20191015033350.14866-1-jassisinghbrar@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
DPPA2(Data Path Acceleration Architecture 2) qDMA supports
virtualized channel by allowing DMA jobs to be enqueued into
different work queues. Core can initiate a DMA transaction by
preparing a frame descriptor(FD) for each DMA job and enqueuing
this job through a hardware portal. DPAA2 components can also
prepare a FD and enqueue a DMA job through a hardware portal.
The qDMA prefetches DMA jobs through DPAA2 hardware portal. It
then schedules and dispatches to internal DMA hardware engines,
which generate read and write requests. Both qDMA source data and
destination data can be either contiguous or non-contiguous using
one or more scatter/gather tables.
The qDMA supports global bandwidth flow control where all DMA
transactions are stalled if the bandwidth threshold has been reached.
Also supported are transaction based read throttling.
Add NXP dppa2 qDMA to support some of Layerscape SoCs.
such as: LS1088A, LS208xA, LX2, etc.
Signed-off-by: Peng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20190930020440.7754-2-peng.ma@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The MC(Management Complex) exports the DPDMAI(Data Path DMA Interface)
object as an interface to operate the DPAA2(Data Path Acceleration
Architecture 2) qDMA Engine. The DPDMAI enables sending frame-based
requests to qDMA and receiving back confirmation response on transaction
completion, utilizing the DPAA2 QBMan(Queue Manager and Buffer Manager
hardware) infrastructure. DPDMAI object provides up to two priorities for
processing qDMA requests.
The following list summarizes the DPDMAI main features and capabilities:
1. Supports up to two scheduling priorities for processing
service requests.
- Each DPDMAI transmit queue is mapped to one of two service
priorities, allowing further prioritization in hardware between
requests from different DPDMAI objects.
2. Supports up to two receive queues for incoming transaction
completion confirmations.
- Each DPDMAI receive queue is mapped to one of two receive
priorities, allowing further prioritization between other
interfaces when associating the DPDMAI receive queues to DPIO
or DPCON(Data Path Concentrator) objects.
3. Supports different scheduling options for processing received
packets:
- Queues can be configured either in 'parked' mode (default),
or attached to a DPIO object, or attached to DPCON object.
4. Allows interaction with one or more DPIO objects for
dequeueing/enqueueing frame descriptors(FD) and for
acquiring/releasing buffers.
5. Supports enable, disable, and reset operations.
Add dpdmai to support some platforms with dpaa2 qdma engine.
Signed-off-by: Peng Ma <peng.ma@nxp.com>
Link: https://lore.kernel.org/r/20190930020440.7754-1-peng.ma@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
In dma probe, the driver checks for devm_clk_get return and print error
message in the failing case. However for -EPROBE_DEFER this message is
confusing so avoid it.
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Link: https://lore.kernel.org/r/1569495060-18117-5-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Replace the chain of platform_get_resource() and devm_ioremap_resource()
with devm_platform_ioremap_resource(). It simplifies the flow and there
is no functional change.
Fixes below cocinelle warning-
WARNING: Use devm_platform_ioremap_resource for xdev -> regs
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/1569495060-18117-4-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Don't populate the array 'handler' on the stack but instead make it
static const. Makes the object code smaller by 80 bytes.
Before:
text data bss dec hex filename
38225 9084 64 47373 b90d drivers/dma/iop-adma.o
After:
text data bss dec hex filename
38081 9148 64 47293 b8bd drivers/dma/iop-adma.o
(gcc version 9.2.1, amd64)
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20190905163726.19690-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
On some platforms the clock can be fixed rate, always running one and
there is no need to do anything with it.
In order to support those platforms, switch to use optional clock.
Fixes: f8d9ddbc28 ("dmaengine: dw: platform: Enable iDMA 32-bit on Intel Elkhart Lake")
Depends-on: 60b8f0ddf1 ("clk: Add (devm_)clk_get_optional() functions")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Link: https://lore.kernel.org/r/20190924085116.83683-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Simplify this function implementation by using a known wrapper function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Link: https://lore.kernel.org/r/85de79fa-1ca5-a1e5-0296-9e8a2066f134@web.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Simplify this function implementation by using a known wrapper function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://lore.kernel.org/r/d36b6a6c-2e3d-8d68-6ddc-969a377ca3b2@web.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Simplify this function implementation by using a known wrapper function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://lore.kernel.org/r/366e776c-8760-eeb7-c248-7380c9f4fd34@web.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Simplify this function implementation a bit by using
a known wrapper function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://lore.kernel.org/r/c7e3bbae-44fa-9019-18ee-c6cdfd7c2a14@web.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Simplify this function implementation by using a known wrapper function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://lore.kernel.org/r/aaed7862-49bb-e368-3e7b-5cc2c3d915b1@web.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Simplify this function implementation a bit by using
a known wrapper function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Link: https://lore.kernel.org/r/5dd19f28-349a-4957-ea3a-6aebbd7c97e2@web.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Simplify this function implementation by using a known wrapper function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Ludovic Desroches <ludovic.desroches@microchip.com>
Link: https://lore.kernel.org/r/377247f3-b53a-a9d9-66c7-4b8515de3809@web.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This patch adds dma-channel-mask property support not to reserve
some DMA channels for some reasons. (for example: a heterogeneous
CPU uses it.)
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/1568010892-17606-5-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This patch uses devm_platform_ioremap_resource() instead of
using platform_get_resource() and devm_ioremap_resource() together
to simplify.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Link: https://lore.kernel.org/r/1568010892-17606-4-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Since we will have changed memory mapping of the DMAC in the future,
this patch uses of_data values instead of a macro to calculate
each channel's base offset.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Link: https://lore.kernel.org/r/1568010892-17606-3-git-send-email-yoshihiro.shimoda.uh@renesas.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
drivers/dma/ti/edma.c: In function edma_probe:
drivers/dma/ti/edma.c:2252:11: warning:
variable off set but not used [-Wunused-but-set-variable]
'off' is not used now, so remove it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20190905060249.23928-1-yuehaibing@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Replace the chain of platform_get_resource() and devm_ioremap_resource()
with devm_platform_ioremap_resource().
This allows to remove the local variable for (struct resource *), and
have one function call less.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Link: https://lore.kernel.org/r/20190905034133.29514-1-yamada.masahiro@socionext.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Merge tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"A bunch of fixes that accumulated in recent weeks, mostly material for
stable.
Summary:
- fix for regression from 5.3 that prevents to use balance convert
with single profile
- qgroup fixes: rescan race, accounting leak with multiple writers,
potential leak after io failure recovery
- fix for use after free in relocation (reported by KASAN)
- other error handling fixups"
* tag 'for-5.4-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: qgroup: Fix reserved data space leak if we have multiple reserve calls
btrfs: qgroup: Fix the wrong target io_tree when freeing reserved data space
btrfs: Fix a regression which we can't convert to SINGLE profile
btrfs: relocation: fix use-after-free on dead relocation roots
Btrfs: fix race setting up and completing qgroup rescan workers
Btrfs: fix missing error return if writeback for extent buffer never started
btrfs: adjust dirty_metadata_bytes after writeback failure of extent buffer
Btrfs: fix selftests failure due to uninitialized i_mode in test inodes
