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>
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>
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>
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>
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>
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>
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>
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>
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>
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>
The driver can match only via the DT table so the table should be always
used and the of_match_ptr does not have any sense (this also allows ACPI
matching via PRP0001, even though it is not relevant here). This fixes
compile warning (!CONFIG_OF on x86_64):
drivers/dma/dw-axi-dmac/dw-axi-dmac-platform.c:984:34: warning:
‘dw_dma_of_id_table’ defined but not used [-Wunused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20201120162303.482126-2-krzk@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Originally freeing descriptors was split into a locked and an unlocked
part. The locked part in vchan_get_all_descriptors() collected all
descriptors on a separate list_head. This was done to allow iterating
over that new list in vchan_dma_desc_free_list() without a lock held.
This became broken in 13bb26ae88 ("dmaengine: virt-dma: don't always
free descriptor upon completion"). With this commit
vchan_dma_desc_free_list() no longer exclusively operates on the
separate list, but starts to put descriptors which can be reused back on
&vc->desc_allocated. This list operation should have been locked, but
wasn't.
In the mean time drivers started to call vchan_dma_desc_free_list() with
their lock held so that we now have the situation that
vchan_dma_desc_free_list() is called locked from some drivers and
unlocked from others.
To clean this up we have to do two things:
1. Add missing locking in vchan_dma_desc_free_list()
2. Make sure drivers call vchan_dma_desc_free_list() unlocked
This needs to be done atomically, so in this patch the locking is added
and all drivers are fixed.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Reviewed-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Green Wan <green.wan@sifive.com>
Tested-by: Green Wan <green.wan@sifive.com>
Link: https://lore.kernel.org/r/20191216105328.15198-3-s.hauer@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The fixes for this round are in drivers:
- jz4780 transfer fix for acking descriptors early
- fsl-qdma: clean registers on error
- dw-axi-dmac: null pointer dereference fix
- mediatek-cqdma: fix sleeping in atomic context
- tegra210-adma: fix bunch os issues like crashing in driver
probe, channel FIFO configuration etc.
- sprd: Fixes for possible crash on descriptor status, block
length overflow. For 2-stage transfer fix incorrect start,
configuration and interrupt handling.
-----BEGIN PGP SIGNATURE-----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=Ca0d
-----END PGP SIGNATURE-----
Merge tag 'dmaengine-fix-5.2-rc4' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine fixes from Vinod Koul:
- jz4780 transfer fix for acking descriptors early
- fsl-qdma: clean registers on error
- dw-axi-dmac: null pointer dereference fix
- mediatek-cqdma: fix sleeping in atomic context
- tegra210-adma: fix bunch os issues like crashing in driver probe,
channel FIFO configuration etc.
- sprd: Fixes for possible crash on descriptor status, block length
overflow. For 2-stage transfer fix incorrect start, configuration and
interrupt handling.
* tag 'dmaengine-fix-5.2-rc4' of git://git.infradead.org/users/vkoul/slave-dma:
dmaengine: sprd: Add interrupt support for 2-stage transfer
dmaengine: sprd: Fix the right place to configure 2-stage transfer
dmaengine: sprd: Fix block length overflow
dmaengine: sprd: Fix the incorrect start for 2-stage destination channels
dmaengine: sprd: Add validation of current descriptor in irq handler
dmaengine: sprd: Fix the possible crash when getting descriptor status
dmaengine: tegra210-adma: Fix spelling
dmaengine: tegra210-adma: Fix channel FIFO configuration
dmaengine: tegra210-adma: Fix crash during probe
dmaengine: mediatek-cqdma: sleeping in atomic context
dmaengine: dw-axi-dmac: fix null dereference when pointer first is null
dmaengine: fsl-qdma: Add improvement
dmaengine: jz4780: Fix transfers being ACKed too soon
In the unlikely event that axi_desc_get returns a null desc in the
very first iteration of the while-loop the error exit path ends
up calling axi_desc_put on a null pointer 'first' and this causes
a null pointer dereference. Fix this by adding a null check on
pointer 'first' before calling axi_desc_put.
Addresses-Coverity: ("Explicit null dereference")
Fixes: 1fe20f1b84 ("dmaengine: Introduce DW AXI DMAC driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Add SPDX license identifiers to all Make/Kconfig files which:
- Have no license information of any form
These files fall under the project license, GPL v2 only. The resulting SPDX
license identifier is:
GPL-2.0-only
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Field name ststus_hi should be spelled as status_hi.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Trivial fix to spelling mistake in dev_err error message text
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This patch adds support for the DW AXI DMAC controller.
DW AXI DMAC is a part of HSDK development board from Synopsys.
In this driver implementation only DMA_MEMCPY transfers are
supported.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
