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git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"We have couple of drivers removed a new driver and bunch of new device
support and few updates to drivers for this round.
New drivers/devices:
- Intel LGM SoC DMA driver
- Actions Semi S500 DMA controller
- Renesas r8a779a0 dma controller
- Ingenic JZ4760(B) dma controller
- Intel KeemBay AxiDMA controller
Removed:
- Coh901318 dma driver
- Zte zx dma driver
- Sirfsoc dma driver
Updates:
- mmp_pdma, mmp_tdma gained module support
- imx-sdma become modern and dropped platform data support
- dw-axi driver gained slave and cyclic dma support"
* tag 'dmaengine-5.12-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (58 commits)
dmaengine: dw-axi-dmac: remove redundant null check on desc
dmaengine: xilinx_dma: Alloc tx descriptors GFP_NOWAIT
dmaengine: dw-axi-dmac: Virtually split the linked-list
dmaengine: dw-axi-dmac: Set constraint to the Max segment size
dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA BYTE and HALFWORD registers
dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA handshake
dmaengine: dw-axi-dmac: Add Intel KeemBay AxiDMA support
dmaengine: drivers: Kconfig: add HAS_IOMEM dependency to DW_AXI_DMAC
dmaengine: dw-axi-dmac: Add Intel KeemBay DMA register fields
dt-binding: dma: dw-axi-dmac: Add support for Intel KeemBay AxiDMA
dmaengine: dw-axi-dmac: Support burst residue granularity
dmaengine: dw-axi-dmac: Support of_dma_controller_register()
dmaegine: dw-axi-dmac: Support device_prep_dma_cyclic()
dmaengine: dw-axi-dmac: Support device_prep_slave_sg
dmaengine: dw-axi-dmac: Add device_config operation
dmaengine: dw-axi-dmac: Add device_synchronize() callback
dmaengine: dw-axi-dmac: move dma_pool_create() to alloc_chan_resources()
dmaengine: dw-axi-dmac: simplify descriptor management
dt-bindings: dma: Add YAML schemas for dw-axi-dmac
dmaengine: ti: k3-psil: optimize struct psil_endpoint_config for size
...
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Pull ARM updates from Russell King:
- Generalise byte swapping assembly
- Update debug addresses for STI
- Validate start of physical memory with DTB
- Do not clear SCTLR.nTLSMD in decompressor
- amba/locomo/sa1111 devices remove method return type is void
- address markers for KASAN in page table dump
* tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 9065/1: OABI compat: fix build when EPOLL is not enabled
ARM: 9055/1: mailbox: arm_mhuv2: make remove callback return void
amba: Make use of bus_type functions
amba: Make the remove callback return void
vfio: platform: simplify device removal
amba: reorder functions
amba: Fix resource leak for drivers without .remove
ARM: 9054/1: arch/arm/mm/mmu.c: Remove duplicate header
ARM: 9053/1: arm/mm/ptdump:Add address markers for KASAN regions
ARM: 9051/1: vdso: remove unneded extra-y addition
ARM: 9050/1: Kconfig: Select ARCH_HAVE_NMI_SAFE_CMPXCHG where possible
ARM: 9049/1: locomo: make locomo bus's remove callback return void
ARM: 9048/1: sa1111: make sa1111 bus's remove callback return void
ARM: 9047/1: smp: remove unused variable
ARM: 9046/1: decompressor: Do not clear SCTLR.nTLSMD for ARMv7+ cores
ARM: 9045/1: uncompress: Validate start of physical memory against passed DTB
ARM: 9042/1: debug: no uncompress debugging while semihosting
ARM: 9041/1: sti LL_UART: add STiH418 SBC UART0 support
ARM: 9040/1: use DEBUG_UART_PHYS and DEBUG_UART_VIRT for sti LL_UART
ARM: 9039/1: assembler: generalize byte swapping macro into rev_l
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The pointer desc is being null checked twice, the second null check
is redundant because desc has not been re-assigned between the
checks. Remove the redundant second null check on desc.
Fixes: ef6fb2d6f1ab ("dmaengine: dw-axi-dmac: simplify descriptor management")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Tested-by: Sia Jee Heng <jee.heng.sia@intel.com>
Reviewed-by: Sia Jee Heng <jee.heng.sia@intel.com>
Addresses-Coverity: ("Logically dead code")
Link: https://lore.kernel.org/r/20210203134652.22618-1-colin.king@canonical.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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This reverts commit 842067940a3e3fc008a60fee388e000219b32632.
For some solutions e.g. sound/soc/intel/catpt, DW DMA is part of a
compound device (in that very example, domains: ADSP, SSP0, SSP1, DMA0
and DMA1 are part of a single entity) rather than being a standalone
one. Driver for said device may enlist DMA to transfer data during
suspend or resume sequences.
Manipulating RPM explicitly in dw's DMA request and release channel
functions causes suspend() to also invoke resume() for the exact same
device. Similar situation occurs for resume() sequence. Effectively
renders device dysfunctional after first suspend() attempt. Revert the
change to address the problem.
Fixes: 842067940a3e ("dmaengine: dw: Enable runtime PM")
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Cezary Rojewski <cezary.rojewski@intel.com>
Acked-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Link: https://lore.kernel.org/r/20210203191924.15706-1-cezary.rojewski@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add device state check before executing command. Without the check the
command can be issued while device is in halt state and causes the driver to
block while waiting for the completion of the command.
Reported-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Fixes: 0d5c10b4c84d ("dmaengine: idxd: add work queue drain support")
Link: https://lore.kernel.org/r/161219313921.2976211.12222625226450097465.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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All amba drivers return 0 in their remove callback. Together with the
driver core ignoring the return value anyhow, it doesn't make sense to
return a value here.
Change the remove prototype to return void, which makes it explicit that
returning an error value doesn't work as expected. This simplifies changing
the core remove callback to return void, too.
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Acked-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org> # for drivers/memory
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Suzuki K Poulose <suzuki.poulose@arm.com> # for hwtracing/coresight
Acked-By: Vinod Koul <vkoul@kernel.org> # for dmaengine
Acked-by: Guenter Roeck <linux@roeck-us.net> # for watchdog
Acked-by: Wolfram Sang <wsa@kernel.org> # for I2C
Acked-by: Takashi Iwai <tiwai@suse.de> # for sound
Acked-by: Vladimir Zapolskiy <vz@mleia.com> # for memory/pl172
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/20210126165835.687514-5-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
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Use GFP_NOWAIT allocation in xilinx_dma_alloc_tx_descriptor().
This is necessary for compatibility with ALSA, which calls
dmaengine_prep_dma_cyclic() from an atomic context.
Signed-off-by: Richard Fitzgerald <rf@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210129170800.31857-1-rf@opensource.cirrus.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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AxiDMA driver exposed the dma_set_max_seg_size() to the DMAENGINE.
It shall helps the DMA clients to create size-optimized linked-list
for the controller.
However, there are certain situations where DMA client might not be
abled to benefit from the dma_get_max_seg_size() if the segment size
can't meet the nature of the DMA client's operation.
In the case of ALSA operation, ALSA application and driver expecting
to run in a period of larger than 10ms regardless of the bit depth.
With this large period, there is a strong request to split the linked-list
in the AxiDMA driver.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-18-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for DMA Scatter-Gather (SG) constraint so that DMA clients can
handle the AxiDMA limitation.
Without supporting DMA constraint the default Max segment size reported by
dmaengine is 64KB, which is not supported by Intel KeemBay AxiDMA.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-17-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for Intel KeemBay AxiDMA BYTE and HALFWORD registers
programming.
Intel KeemBay AxiDMA supports data transfer between device to memory
and memory to device operations.
This code is needed by I2C, I3C, I2S, SPI and UART which uses FIFO
size of 8bits and 16bits to perform memory to device data transfer
operation. 0-padding functionality is provided to avoid
pre-processing of data on CPU.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-16-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for Intel KeemBay AxiDMA device handshake programming.
Device handshake number passed in to the AxiDMA shall be written to
the Intel KeemBay AxiDMA hardware handshake registers before DMA
operations are started.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-15-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for Intel KeemBay AxiDMA to the .compatible field.
The AxiDMA Apb region will be accessible if the compatible string
matches the "intel,kmb-axi-dma".
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-14-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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If HAS_IOMEM is not defined and DW_AXI_DMAC is enabled under COMPILE_TEST,
the build fails with the following error:
dw-axi-dmac-platform.c:(.text+0xc4): undefined reference to
`devm_ioremap_resource'
Link: https://www.spinics.net/lists/dmaengine/msg25188.html
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Link: https://lore.kernel.org/r/20210125013255.25799-13-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for Intel KeemBay DMA registers. These registers are required
to run data transfer between device to memory and memory to device on Intel
KeemBay SoC.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-12-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for DMA_RESIDUE_GRANULARITY_BURST so that AxiDMA can report
DMA residue.
Existing AxiDMA driver only support data transfer between
memory to memory operation, therefore reporting DMA residue
to the DMA clients is not supported.
Reporting DMA residue to the DMA clients is important as DMA clients
shall invoke dmaengine_tx_status() to understand the number of bytes
been transferred so that the buffer pointer can be updated accordingly.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-10-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for of_dma_controller_register() so that DMA clients
can pass in device handshake number to the AxiDMA driver.
DMA clients shall code the device handshake number in the Device tree.
When DMA activities are needed, DMA clients shall invoke OF helper
function to pass in the device handshake number to the AxiDMA.
Without register to the of_dma_controller_register(), data transfer
between memory to device and device to memory operations would failed.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-9-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for device_prep_dma_cyclic() callback function to benefit
DMA cyclic client, for example ALSA.
Existing AxiDMA driver only support data transfer between memory to memory.
Data transfer between device to memory and memory to device in cyclic mode
would failed if this interface is not supported by the AxiDMA driver.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-8-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add device_prep_slave_sg() callback function so that DMA_MEM_TO_DEV
and DMA_DEV_TO_MEM operations in single mode can be supported.
Existing AxiDMA driver only support data transfer between
memory to memory. Data transfer between device to memory and
memory to device in single mode would failed if this interface
is not supported by the AxiDMA driver.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-7-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add device_config() callback function so that the device address
can be passed to the dma driver.
DMA clients use this interface to pass in the device address to the
AxiDMA. Without this interface, data transfer between device to memory
and memory to device would failed.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-6-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Add support for device_synchronize() callback function to sync with
dmaengine_terminate_sync().
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-5-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The DMA memory block is created at driver load time and exist for
device lifetime. Move the dma_pool_create() to the ->chan_resource()
callback function allowing the DMA memory blocks to be created as needed
and destroyed when the channel is freed.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-4-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Simplify and refactor the descriptor management by removing the redundant
Linked List Item (LLI) queue control logic from the AxiDMA driver.
The descriptor is split into virtual descriptor and hardware LLI so that
only hardware LLI memories are allocated from the DMA memory pool.
Up to 64 descriptors can be allocated within a PAGE_SIZE compare to 16
descriptors in previous version. This solves the problem where an
ALSA driver expects more than 16 DMA descriptors to run.
Signed-off-by: Sia Jee Heng <jee.heng.sia@intel.com>
Tested-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Link: https://lore.kernel.org/r/20210125013255.25799-3-jee.heng.sia@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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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: 32d31c79a1a4fbc4 ("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>
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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>
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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>
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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>
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Fix misspelling of "physical".
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20210126205906.2918099-1-helgaas@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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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>
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In 'dma_pool_create()', we return -ENOMEM, but don't release the resources
already allocated, as in all the other error handling paths.
Go to 'err_res_free' instead of returning directly.
Fixes: 017794739702 ("dmaengine: ti: k3-udma: Initial support for K3 BCDMA")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20210124070923.724479-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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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>
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There is no reason the Marvell MMP two-channel audio DMA driver would have
to be built-in.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20210121110356.1768635-4-lkundrak@v3.sk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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There is no reason the Marvell MMP peripheral DMA driver would have
to be built-in.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20210121110356.1768635-3-lkundrak@v3.sk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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It's not used anywhere -- drop it.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Link: https://lore.kernel.org/r/20210121110356.1768635-2-lkundrak@v3.sk
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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The ST-Ericsson U300 platform is getting removed, so this driver is no
longer needed.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20210120131859.2056308-4-arnd@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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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>
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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>
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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>
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Use of_device_get_match_data() to make the code simpler.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Link: https://lore.kernel.org/r/20210118121549.1625217-2-festevam@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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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>
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Channel device_node deletion is managed by the device driver rather than
the dmaengine core. The deletion was accidentally introduced when making
channel unregister dynamic. It causes xilinx_dma module to crash on unload
as reported by Radhey. Remove chan->device_node delete in dmaengine and
also fix up idxd driver.
[ 42.142705] Internal error: Oops: 96000044 [#1] SMP
[ 42.147566] Modules linked in: xilinx_dma(-) clk_xlnx_clock_wizard uio_pdrv_genirq
[ 42.155139] CPU: 1 PID: 2075 Comm: rmmod Not tainted 5.10.1-00026-g3a2e6dd7a05-dirty #192
[ 42.163302] Hardware name: Enclustra XU5 SOM (DT)
[ 42.167992] pstate: 40000005 (nZcv daif -PAN -UAO -TCO BTYPE=--)
[ 42.173996] pc : xilinx_dma_chan_remove+0x74/0xa0 [xilinx_dma]
[ 42.179815] lr : xilinx_dma_chan_remove+0x70/0xa0 [xilinx_dma]
[ 42.185636] sp : ffffffc01112bca0
[ 42.188935] x29: ffffffc01112bca0 x28: ffffff80402ea640
xilinx_dma_chan_remove+0x74/0xa0:
__list_del at ./include/linux/list.h:112 (inlined by)
__list_del_entry at./include/linux/list.h:135 (inlined by)
list_del at ./include/linux/list.h:146 (inlined by)
xilinx_dma_chan_remove at drivers/dma/xilinx/xilinx_dma.c:2546
Fixes: e81274cd6b52 ("dmaengine: add support to dynamic register/unregister of channels")
Reported-by: Radhey Shyam Pandey <radheys@xilinx.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Radhey Shyam Pandey <radhey.shyam.pandey@xilinx.com>
Link: https://lore.kernel.org/r/161099092469.2495902.5064826526660062342.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Cc: stable@vger.kernel.org # 5.9+
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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: 8f47d1a5e545 ("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>
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Nikhil reported the misc interrupt handler can sometimes miss handling
the command interrupt when an error interrupt happens near the same time.
Have the irq handling thread continue to process the misc interrupts until
all interrupts are processed. This is a low usage interrupt and is not
expected to handle high volume traffic. Therefore there is no concern of
this thread running for a long time.
Fixes: 0d5c10b4c84d ("dmaengine: idxd: add work queue drain support")
Reported-by: Nikhil Rao <nikhil.rao@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/161074755329.2183844.13295528344116907983.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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Sanjay reported the following kernel splat after running dmatest for stress
testing. The current code is giving up the spinlock in the middle of
a completion list walk, and that opens up opportunity for list corruption
if another thread touches the list at the same time. In order to make sure
the list is always protected, the hardware completed descriptors will be
put on a local list to be completed with callbacks from the outside of
the list lock.
kernel: general protection fault, probably for non-canonical address 0xdead000000000100: 0000 [#1] SMP NOPTI
kernel: CPU: 62 PID: 1814 Comm: irq/89-idxd-por Tainted: G W 5.10.0-intel-next_10_16+ #1
kernel: Hardware name: Intel Corporation ArcherCity/ArcherCity, BIOS EGSDCRB1.SBT.4915.D02.2012070418 12/07/2020
kernel: RIP: 0010:irq_process_work_list+0xcd/0x170 [idxd]
kernel: Code: e8 18 65 5c d3 8b 45 d4 85 c0 75 b3 4c 89 f7 e8 b9 fe ff ff 84 c0 74 bf 4c 89 e7 e8 dd 6b 5c d3 49 8b 3f 49 8b 4f 08 48 89 c6 <48> 89 4f 08 48 89 39 4c 89 e7 48 b9 00 01 00 00 00 00 ad de 49 89
kernel: RSP: 0018:ff256768c4353df8 EFLAGS: 00010046
kernel: RAX: 0000000000000202 RBX: dead000000000100 RCX: dead000000000122
kernel: RDX: 0000000000000001 RSI: 0000000000000202 RDI: dead000000000100
kernel: RBP: ff256768c4353e40 R08: 0000000000000001 R09: 0000000000000000
kernel: R10: 0000000000000000 R11: 00000000ffffffff R12: ff1fdf9fd06b3e48
kernel: R13: 0000000000000005 R14: ff1fdf9fc4275980 R15: ff1fdf9fc4275a00
kernel: FS: 0000000000000000(0000) GS:ff1fdfa32f880000(0000) knlGS:0000000000000000
kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
kernel: CR2: 00007f87f24012a0 CR3: 000000010f630004 CR4: 0000000003771ee0
kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kernel: DR3: 0000000000000000 DR6: 00000000fffe07f0 DR7: 0000000000000400
kernel: PKRU: 55555554
kernel: Call Trace:
kernel: ? irq_thread+0xa9/0x1b0
kernel: idxd_wq_thread+0x34/0x90 [idxd]
kernel: irq_thread_fn+0x24/0x60
kernel: irq_thread+0x10f/0x1b0
kernel: ? irq_forced_thread_fn+0x80/0x80
kernel: ? wake_threads_waitq+0x30/0x30
kernel: ? irq_thread_check_affinity+0xe0/0xe0
kernel: kthread+0x142/0x160
kernel: ? kthread_park+0x90/0x90
kernel: ret_from_fork+0x1f/0x30
kernel: Modules linked in: idxd_ktest dmatest intel_rapl_msr idxd_mdev iTCO_wdt vfio_pci vfio_virqfd iTCO_vendor_support intel_rapl_common i10nm_edac nfit x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel crypto_simd cryptd glue_helper rapl msr pcspkr snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg ofpart snd_hda_codec snd_hda_core snd_hwdep cmdlinepart snd_seq snd_seq_device idxd snd_pcm intel_spi_pci intel_spi snd_timer spi_nor input_leds joydev snd i2c_i801 mtd soundcore i2c_smbus mei_me mei i2c_ismt ipmi_ssif acpi_ipmi ipmi_si ipmi_devintf ipmi_msghandler mac_hid sunrpc nls_iso8859_1 sch_fq_codel ip_tables x_tables xfs libcrc32c ast drm_vram_helper drm_ttm_helper ttm igc wmi pinctrl_sunrisepoint hid_generic usbmouse usbkbd usbhid hid
kernel: ---[ end trace cd5ca950ef0db25f ]---
Reported-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Signed-off-by: Dave Jiang <dave.jiang@intel.com>
Tested-by: Sanjay Kumar <sanjay.k.kumar@intel.com>
Fixes: e4f4d8cdeb9a ("dmaengine: idxd: Clean up descriptors with fault error")
Link: https://lore.kernel.org/r/161074757267.2183951.17912830858060607266.stgit@djiang5-desk3.ch.intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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fix semicolon.cocci warning:
drivers/dma/qcom/gpi.c:1703:2-3: Unneeded semicolon
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20210115100040.33364-1-vulab@iscas.ac.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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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: 4831e0d9054c ("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>
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The ret does not need to be initialized to 0 in the tisci channel config
functions.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Link: https://lore.kernel.org/r/20210113114923.9231-4-peter.ujfalusi@gmail.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
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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>
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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: 8844898028d4 ("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>
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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: 5d0c3533a19f ("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>
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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: 47e20577c24d ("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>
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