Core:
- Support out of order dma completion
- Support for repeating transaction
New controllers:
- Support for Actions S700 DMA engine
- Renesas R8A774E1, r8a7742 controller binding
- New driver for Xilinx DPDMA controller
Others:
- Support of out of order dma completion in idxd driver
- W=1 warning cleanup of subsystem
- Updates to ti-k3-dma, dw, idxd drivers
-----BEGIN PGP SIGNATURE-----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=OfZv
-----END PGP SIGNATURE-----
Merge tag 'dmaengine-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul:
"Core:
- Support out of order dma completion
- Support for repeating transaction
New controllers:
- Support for Actions S700 DMA engine
- Renesas R8A774E1, r8a7742 controller binding
- New driver for Xilinx DPDMA controller
Other:
- Support of out of order dma completion in idxd driver
- W=1 warning cleanup of subsystem
- Updates to ti-k3-dma, dw, idxd drivers"
* tag 'dmaengine-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (68 commits)
dmaengine: dw: Don't include unneeded header to platform data header
dmaengine: Actions: Add support for S700 DMA engine
dmaengine: Actions: get rid of bit fields from dma descriptor
dt-bindings: dmaengine: convert Actions Semi Owl SoCs bindings to yaml
dmaengine: idxd: add missing invalid flags field to completion
dmaengine: dw: Initialize max_sg_burst capability
dmaengine: dw: Introduce max burst length hw config
dmaengine: dw: Initialize min and max burst DMA device capability
dmaengine: dw: Set DMA device max segment size parameter
dmaengine: dw: Take HC_LLP flag into account for noLLP auto-config
dmaengine: Introduce DMA-device device_caps callback
dmaengine: Introduce max SG burst capability
dmaengine: Introduce min burst length capability
dt-bindings: dma: dw: Add max burst transaction length property
dt-bindings: dma: dw: Convert DW DMAC to DT binding
dmaengine: ti: k3-udma: Query throughput level information from hardware
dmaengine: ti: k3-udma: Use defines for capabilities register parsing
dmaengine: xilinx: dpdma: Fix kerneldoc warning
dmaengine: xilinx: dpdma: add missing kernel doc
dmaengine: xilinx: dpdma: remove comparison of unsigned expression
...
We only request ring pairs via K3 DMA driver, switch to use the new
k3_ringacc_request_rings_pair() to simplify the code.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Acked-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Santosh Shilimkar <santosh.shilimkar@oracle.com>
The register offsets and functions are the same among TCHAN and RCHAN.
Use generic, common names for them.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com>
Link: https://lore.kernel.org/r/20200707102352.28773-4-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
- Core:
- Some code cleanup and optimization in core by Andy
- Debugfs support for displaying dmaengine channels by Peter
- Drivers:
- New driver for uniphier-xdmac controller
- Updates to stm32 dma, mdma and dmamux drivers and PM support
- More updates to idxd drivers
- Bunch of changes in tegra-apb driver and cleaning up of pm functions
- Bunch of spelling fixes and Replace zero-length array patches
- Shutdown hook for fsl-dpaa2-qdma driver
- Support for interleaved transfers for ti-edma and virtualization
support for k3-dma driver
- Support for reset and updates in xilinx_dma driver
- Improvements and locking updates in at_hdma driver
-----BEGIN PGP SIGNATURE-----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=+UJ7
-----END PGP SIGNATURE-----
Merge tag 'dmaengine-5.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma
Pull dmaengine updates from Vinod Koul:
"Core:
- Some code cleanup and optimization in core by Andy
- Debugfs support for displaying dmaengine channels by Peter
Drivers:
- New driver for uniphier-xdmac controller
- Updates to stm32 dma, mdma and dmamux drivers and PM support
- More updates to idxd drivers
- Bunch of changes in tegra-apb driver and cleaning up of pm
functions
- Bunch of spelling fixes and Replace zero-length array patches
- Shutdown hook for fsl-dpaa2-qdma driver
- Support for interleaved transfers for ti-edma and virtualization
support for k3-dma driver
- Support for reset and updates in xilinx_dma driver
- Improvements and locking updates in at_hdma driver"
* tag 'dmaengine-5.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (89 commits)
dt-bindings: dma: renesas,usb-dmac: add r8a77961 support
dmaengine: uniphier-xdmac: Remove redandant error log for platform_get_irq
dmaengine: tegra-apb: Improve DMA synchronization
dmaengine: tegra-apb: Don't save/restore IRQ flags in interrupt handler
dmaengine: tegra-apb: mark PM functions as __maybe_unused
dmaengine: fix spelling mistake "exceds" -> "exceeds"
dmaengine: sprd: Set request pending flag when DMA controller is active
dmaengine: ppc4xx: Use scnprintf() for avoiding potential buffer overflow
dmaengine: idxd: remove global token limit check
dmaengine: idxd: reflect shadow copy of traffic class programming
dmaengine: idxd: Merge definition of dsa_batch_desc into dsa_hw_desc
dmaengine: Create debug directories for DMA devices
dmaengine: ti: k3-udma: Implement custom dbg_summary_show for debugfs
dmaengine: Add basic debugfs support
dmaengine: fsl-dpaa2-qdma: remove set but not used variable 'dpaa2_qdma'
dmaengine: ti: edma: fix null dereference because of a typo in pointer name
dmaengine: fsl-dpaa2-qdma: Adding shutdown hook
dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver
dt-bindings: dmaengine: Add UniPhier external DMA controller bindings
dmaengine: ti: k3-udma: Implement support for atype (for virtualization)
...
All but one error handling paths in the 'k3_udma_glue_cfg_rx_flow()'
function 'goto err' and call 'k3_udma_glue_release_rx_flow()'.
This not correct because this function has a 'channel->flows_ready--;' at
the end, but 'flows_ready' has not been incremented here, when we branch to
the error handling path.
In order to keep a correct value in 'flows_ready', un-roll
'k3_udma_glue_release_rx_flow()', simplify it, add some labels and branch
at the correct places when an error is detected.
Doing so, we also NULLify 'flow->udma_rflow' in a path that was lacking it.
Fixes: d702419134 ("dmaengine: ti: k3-udma: Add glue layer for non DMAengine user")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200318191209.1267-1-christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul <vkoul@kernel.org>
The DT for virtualized hosts have dma-cells == 2 where the second parameter
is the ATYPE for the channel.
In case of dma-cells == 1 we can configure the ATYPE as 0 (reset value).
The ATYPE defined for j721e are:
0: pointers are physical addresses (no translation)
1: pointers are intermediate addresses (PVU)
2: pointers are virtual addresses (SMMU)
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200218143126.11361-3-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Certain users can not use right now the DMAengine API due to missing
features in the core. Prime example is Networking.
These users can use the glue layer interface to avoid misuse of DMAengine
API and when the core gains the needed features they can be converted to
use generic API.
The most prominent features the glue layer clients are depending on:
- most PSI-L native peripheral use extra rflow ranges on a receive channel
and depending on the peripheral's configuration packets from a single
free descriptor ring is going to be received to different receive ring
- it is also possible to have different free descriptor rings per rflow
and an rflow can also support 4 additional free descriptor ring based
on the size of the incoming packet
- out of order completion of descriptors on a channel
- when we have several queues to handle different priority packets the
descriptors will be completed 'out-of-order'
- the notion of prep_slave_sg is not matching with what the streaming type
of operation is demanding for networking
- Streaming type of operation
- Ability to fill the free descriptor ring with descriptors in
anticipation of incoming traffic and when a packet arrives UDMAP will
form a packet and gives it to the client driver
- the descriptors are not backed with exact size data buffers as we don't
know the size of the packet we will receive, but as a generic pool of
buffers to be used by the receive channel
- NAPI type of operation (polling instead of interrupt driven transfer)
- without this we can not sustain gigabit speeds and we need to support NAPI
- not to limit this to networking, but other high performance operations
Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Keerthy <j-keerthy@ti.com>
Link: https://lore.kernel.org/r/20191223110458.30766-12-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
