YAML schemas Device Tree (DT) binding is the new format for DT to replace
the old format. Introduce YAML schemas DT binding for dw-axi-dmac and
remove the old version.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20210125013255.25799-2-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The Intel Lightning Mountain (LGM) DMA controller is only present on
Intel Lightning Mountain SoCs. Hence add a dependency on X86, to
prevent asking the user about this driver when configuring a kernel
without Intel Lightning Mountain platform support.
While at it, fix a misspelling of "Intel".
Fixes: 32d31c79a1 ("dmaengine: Add Intel LGM SoC DMA support.")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20210129131702.2656060-1-geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The DMACs (both SYS-DMAC and RT-DMAC) on R-Car V3U differ slightly from
the DMACs on R-Car Gen2 and other R-Car Gen3 SoCs:
1. The per-channel registers are located in a second register block.
Add support for mapping the second block, using the appropriate
offsets and stride.
2. The common Channel Clear Register (DMACHCLR) was replaced by a
per-channel register.
Update rcar_dmac_chan_clear{,_all}() to handle this.
As rcar_dmac_init() needs to clear the status before the individual
channels are probed, channel index and base address initialization
are moved forward.
Inspired by a patch in the BSP by Phong Hoang
<phong.hoang.wz@renesas.com>.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210128084455.2237256-5-geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Extract the code to clear the status of one or all channels into their
own helpers, to prepare for the different handling of the R-Car V3U SoC.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210128084455.2237256-4-geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add a helper macro for iterating over all DMAC channels, taking into
account the channel mask. Use it where appropriate, to simplify code.
Restore "reverse Christmas tree" order of local variables while adding a
new variable.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210128084455.2237256-3-geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Document the compatible value for the Direct Memory Access Controller
blocks in the Renesas R-Car V3U (R8A779A0) SoC.
The most visible difference with DMAC blocks on other R-Car SoCs is the
move of the per-channel registers to a separate register block.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://lore.kernel.org/r/20210128084455.2237256-2-geert+renesas@glider.be
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When bam dma is "controlled remotely", thus far clocks were not controlled
from the Linux. In this scenario, Linux was disabling runtime pm in bam dma
driver and not doing any clock management in suspend/resume hooks.
With introduction of crypto engine bam dma, the clock is a rpmh resource
that can be controlled from both Linux and TZ/remote side. Now bam dma
clock is getting enabled during probe even though the bam dma can be
"controlled remotely". But due to clocks not being handled properly,
bam_suspend generates a unbalanced clk_unprepare warning during system
suspend.
To fix the above issue and to enable proper clock-management, this patch
enables runtim-pm and handles bam dma clocks in suspend/resume hooks if
the clock node is present irrespective of controlled_remotely property.
Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: John Stultz <john.stultz@linaro.org>
Reviewed-by: Shawn Guo <shawn.guo@linaro.org>
Link: https://lore.kernel.org/r/20210126211859.790892-1-thara.gopinath@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add a module parameter that overrides the SVA feature enabling. This keeps
the driver in legacy mode even when intel_iommu=sm_on is set. In this mode,
the descriptor fields must be programmed with dma_addr_t from the Linux DMA
API for source, destination, and completion descriptors.
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/161134110457.4005461.13171197785259115852.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The zte zx platform is getting removed, so this driver is no
longer needed.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Jun Nie <jun.nie@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Link: https://lore.kernel.org/r/20210120131859.2056308-3-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The CSR SiRF prima2/atlas platforms are getting removed, so this driver
is no longer needed.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Barry Song <baohua@kernel.org>
Cc: Barry Song <baohua@kernel.org>
Link: https://lore.kernel.org/r/20210120131859.2056308-2-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add support for the JZ4760 and JZ4760B SoCs.
Both SoCs have only 5 DMA channels per chip. The JZ4760B introduced the
DCKES/DCKEC registers.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210120105322.16116-2-paul@crapouillou.net
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add ingenic,jz4760-dma and ingenic,jz4760b-dma compatible strings to
support the DMA engines present in the JZ4760 and JZ4760B SoCs.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20210120105322.16116-1-paul@crapouillou.net
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Since 5.10-rc1, i.MX has been converted to a devicetree-only platform.
The platform data support in this driver was only used for non-DT
platforms.
Remove the platform data support as it has no more users.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20210118121549.1625217-1-festevam@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add DMA_PRIVATE attribute flag to idxd DMA channels. The dedicated WQs are
expected to be used by a single client and not shared. While doing NTB
testing this mistake was discovered, which prevented ntb_transport from
requesting DSA wqs as DMA channels via dma_request_channel().
Reported-by: Srinijia Kambham <srinija.kambham@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Srinijia Kambham <srinija.kambham@intel.com>
Fixes: 8f47d1a5e5 ("dmaengine: idxd: connect idxd to dmaengine subsystem")
Link: https://lore.kernel.org/r/161074758743.2184057.3388557138816350980.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
On Intel Tangier B0 and Anniedale the interrupt line, disregarding
to have different numbers, is shared between HSU DMA and UART IPs.
Thus on such SoCs we are expecting that IRQ handler is called in
UART driver only. hsu_pci_irq was handling the spurious interrupt
from HSU DMA by returning immediately. This wastes CPU time and
since HSU DMA and HSU UART interrupt occur simultaneously they race
to be handled causing delay to the HSU UART interrupt handling.
Fix this by disabling the interrupt entirely.
Fixes: 4831e0d905 ("serial: 8250_mid: handle interrupt correctly in DMA case")
Signed-off-by: Ferry Toth <ftoth@exalondelft.nl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210112223749.97036-1-ftoth@exalondelft.nl
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The UDMA and BCDMA can provide higher throughput if the burst_size of the
channel is changed from it's default (which is 64 bytes) for Ultra-high
and high capacity channels.
This performance benefit is even more visible when the buffers are aligned
with the burst_size configuration.
The am654 does not have a way to change the burst size, but it is using
64 bytes burst, so increasing the copy_align from 8 bytes to 64 (and
clients taking that into account) can increase the throughput as well.
Numbers gathered on j721e:
echo 8000000 > /sys/module/dmatest/parameters/test_buf_size
echo 2000 > /sys/module/dmatest/parameters/timeout
echo 50 > /sys/module/dmatest/parameters/iterations
echo 1 > /sys/module/dmatest/parameters/max_channels
Prior this patch: ~1.3 GB/s
After this patch: ~1.8 GB/s
with 1 byte alignment: ~1.7 GB/s
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Tested-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20210113114923.9231-3-peter.ujfalusi@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Some DMA device can benefit with higher order of alignment than the maximum
of 64 bytes currently defined.
Define 128 and 256 bytes alignment for these devices.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Tested-by: Kishon Vijay Abraham I <kishon@ti.com>
Link: https://lore.kernel.org/r/20210113114923.9231-2-peter.ujfalusi@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
BCDMA RX channels have one flow per channel, therefore set the rflow_cnt
to rchan_cnt.
Without this patch, request for BCDMA RX channel allocation fails as
rflow_cnt is 0 thus fails to reserve a rflow for the channel.
Fixes: 8844898028 ("dmaengine: ti: k3-udma: Add support for BCDMA channel TPL handling")
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20210112141403.30286-1-vigneshr@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
When building with CONFIG_UBSAN_UNSIGNED_OVERFLOW, clang decides not to
inline gpi_update_reg, which causes a linkage failure around __bad_mask:
ld.lld: error: undefined symbol: __bad_mask
>>> referenced by bitfield.h:119 (include/linux/bitfield.h:119)
>>> dma/qcom/gpi.o:(gpi_update_reg) in archive drivers/built-in.a
>>> referenced by bitfield.h:119 (include/linux/bitfield.h:119)
>>> dma/qcom/gpi.o:(gpi_update_reg) in archive drivers/built-in.a
If gpi_update_reg is not inlined, the mask value will not be known at
compile time so the check in field_multiplier stays in the final
object file, causing the above linkage failure. Always inline
gpi_update_reg so that this check can never fail.
Fixes: 5d0c3533a1 ("dmaengine: qcom: Add GPI dma driver")
Link: https://github.com/ClangBuiltLinux/linux/issues/1243
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Link: https://lore.kernel.org/r/20210112191214.1264793-1-natechancellor@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
A 'dma_pool_destroy()' call is missing in the remove function.
Add it.
This call is already made in the error handling path of the probe function.
Fixes: 47e20577c2 ("dmaengine: Add Actions Semi Owl family S900 DMA driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20201212162535.95727-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
In case of error, the previous 'fsl_dma_chan_probe()' calls must be undone
by some 'fsl_dma_chan_remove()', as already done in the remove function.
It was added in the remove function in commit 77cd62e808 ("fsldma: allow
Freescale Elo DMA driver to be compiled as a module")
Fixes: d3f620b2c4 ("fsldma: simplify IRQ probing and handling")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20201212160614.92576-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
A 'irq_dispose_mapping()' call is missing in the remove function.
Add it.
This is needed to undo the 'irq_of_parse_and_map() call from the probe
function and already part of the error handling path of the probe function.
It was added in the probe function only in commit d3f620b2c4 ("fsldma:
simplify IRQ probing and handling")
Fixes: 77cd62e808 ("fsldma: allow Freescale Elo DMA driver to be compiled as a module")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/20201212160516.92515-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add DMA controller driver for Lightning Mountain (LGM) family of SoCs.
The main function of the DMA controller is the transfer of data from/to any
peripheral to/from the memory. A memory to memory copy capability can also
be configured.
This ldma driver is used for configure the device and channnels for data
and control paths.
Signed-off-by: Amireddy Mallikarjuna reddy <mallikarjunax.reddy@linux.intel.com>
Link: https://lore.kernel.org/r/5fc54eb7ccfad4f8dd812b66b884054fc55cf050.1606905330.git.mallikarjunax.reddy@linux.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
mutex lock can be initialized automatically with DEFINE_MUTEX()
rather than explicitly calling mutex_init().
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20201224132254.30961-1-zhengyongjun3@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
linux/platform_data/dma-atmel.h is only used by the at_hdmac driver. Move
the CFG bits definitions back in at_hdmac_regs.h and the remaining
definitions in the driver.
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201228203022.2674133-1-alexandre.belloni@bootlin.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The DMA controller present on the Actions Semi S500 SoC is compatible
with the S900 variant, so add it to the list of devices supported by
the Actions Semi Owl DMA driver. Additionally, order the entries
alphabetically.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/88dc9dc064fd4c71f7ad46f172b05b09b9777e42.1609263738.git.cristian.ciocaltea@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add a new compatible string corresponding to the DMA controller found
in the S500 variant of the Actions Semi Owl SoCs family. Additionally,
order the entries alphabetically.
Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@gmail.com>
Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/2bd23ef5dad5dd613006c20d714b1be3c4d38e7a.1609263738.git.cristian.ciocaltea@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Since commit 36e2c7421f ("fs: don't allow splice read/write without
explicit ops") we've required that file operation structures explicitly
enable splice support, rather than falling back to the default handlers.
Most /proc files use the indirect 'struct proc_ops' to describe their
file operations, and were fixed up to support splice earlier in commits
40be821d627c..b24c30c67863, but the mountinfo files interact with the
VFS directly using their own 'struct file_operations' and got missed as
a result.
This adds the necessary support for splice to work for /proc/*/mountinfo
and friends.
Reported-by: Joan Bruguera Micó <joanbrugueram@gmail.com>
Reported-by: Jussi Kivilinna <jussi.kivilinna@iki.fi>
Link: https://bugzilla.kernel.org/show_bug.cgi?id=209971
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Christoph Hellwig <hch@lst.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Pull crypto fixes from Herbert Xu:
"Fix a number of autobuild failures due to missing Kconfig
dependencies"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: qat - add CRYPTO_AES to Kconfig dependencies
crypto: keembay - Add dependency on HAS_IOMEM
crypto: keembay - CRYPTO_DEV_KEEMBAY_OCS_AES_SM4 should depend on ARCH_KEEMBAY
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fix from Ingo Molnar:
"Fix a segfault that occurs when built with Clang"
* tag 'objtool-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Fix seg fault with Clang non-section symbols
and fix a typo in the Kconfig help text.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'timers-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fixes from Ingo Molnar:
"Update/fix two CPU sanity checks in the hotplug and the boot code, and
fix a typo in the Kconfig help text.
[ Context: the first two commits are the result of an ongoing
annotation+review work of (intentional) tick_do_timer_cpu() data
races reported by KCSAN, but the annotations aren't fully cooked
yet ]"
* tag 'timers-urgent-2020-12-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Fix spelling mistake in Kconfig "fullfill" -> "fulfill"
tick/sched: Remove bogus boot "safety" check
tick: Remove pointless cpu valid check in hotplug code
Commit c9a3c4e637 ("mfd: ab8500-debugfs: Remove extraneous curly
brace") removed a left-over curly brace that caused build failures, but
Joe Perches points out that the subsequent 'seq_putc()' should also be
removed, because the commit that caused all these problems already added
the final '\n' to the seq_printf() above it.
Reported-by: Joe Perches <joe@perches.com>
Fixes: 886c812165 ("mfd: ab8500-debugfs: Remove the racy fiddling with irq_desc")
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Sia Jee Heng