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The Keystone Navigator DMA driver sets up the dma channels and flows for the QMSS(Queue Manager SubSystem) who triggers the actual data movements across clients using destination queues. Every client modules like NETCP(Network Coprocessor), SRIO(Serial Rapid IO) and CRYPTO Engines has its own instance of packet dma hardware. QMSS has also an internal packet DMA module which is used as an infrastructure DMA with zero copy. Initially this driver was proposed as DMA engine driver but since the hardware is not typical DMA engine and hence doesn't comply with typical DMA engine driver needs, that approach was naked. Link to that discussion - https://lkml.org/lkml/2014/3/18/340 As aligned, now we pair the Navigator DMA with its companion Navigator QMSS subsystem driver. Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Kumar Gala <galak@codeaurora.org> Cc: Olof Johansson <olof@lixom.net> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Grant Likely <grant.likely@linaro.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Sandeep Nair <sandeep_n@ti.com> Signed-off-by: Santosh Shilimkar <santosh.shilimkar@ti.com>
32 lines
871 B
Plaintext
32 lines
871 B
Plaintext
#
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# TI SOC drivers
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#
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menuconfig SOC_TI
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bool "TI SOC drivers support"
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if SOC_TI
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config KEYSTONE_NAVIGATOR_QMSS
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tristate "Keystone Queue Manager Sub System"
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depends on ARCH_KEYSTONE
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help
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Say y here to support the Keystone multicore Navigator Queue
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Manager support. The Queue Manager is a hardware module that
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is responsible for accelerating management of the packet queues.
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Packets are queued/de-queued by writing/reading descriptor address
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to a particular memory mapped location in the Queue Manager module.
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If unsure, say N.
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config KEYSTONE_NAVIGATOR_DMA
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tristate "TI Keystone Navigator Packet DMA support"
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depends on ARCH_KEYSTONE
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help
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Say y tp enable support for the Keystone Navigator Packet DMA on
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on Keystone family of devices. It sets up the dma channels for the
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Queue Manager Sub System.
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If unsure, say N.
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endif # SOC_TI
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