[PATCH v0 1/1] doc: announce inter-device DMA capability support in dmadev

[Vamsi Krishna Attunuru]

Hi Feng,

Kindly review below.

Regards
Vamsi

>-----Original Message-----
>From: Vamsi Krishna Attunuru <vattunuru at marvell.com>
>Sent: Friday, July 11, 2025 8:35 PM
>To: Vamsi Krishna Attunuru <vattunuru at marvell.com>; dev at dpdk.org;
>fengchengwen at huawei.com; Pavan Nikhilesh Bhagavatula
><pbhagavatula at marvell.com>; kevin.laatz at intel.com;
>bruce.richardson at intel.com; mb at smartsharesystems.com
>Cc: Jerin Jacob <jerinj at marvell.com>; thomas at monjalon.net
>Subject: RE: [PATCH v0 1/1] doc: announce inter-device DMA capability
>support in dmadev
>
>Hi,
>
>Gentle ping for reviews.
>
>>-----Original Message-----
>>From: Vamsi Krishna <vattunuru at marvell.com>
>>Sent: Thursday, July 10, 2025 2:21 PM
>>To: dev at dpdk.org; fengchengwen at huawei.com; Pavan Nikhilesh
>Bhagavatula
>><pbhagavatula at marvell.com>; kevin.laatz at intel.com;
>>bruce.richardson at intel.com; mb at smartsharesystems.com
>>Cc: Jerin Jacob <jerinj at marvell.com>; thomas at monjalon.net; Vamsi
>>Krishna Attunuru <vattunuru at marvell.com>
>>Subject: [PATCH v0 1/1] doc: announce inter-device DMA capability
>>support in dmadev
>>
>>From: Vamsi Attunuru <vattunuru at marvell.com>
>>
>>Modern DMA hardware supports data transfer between multiple DMA
>>devices, enabling data communication across isolated domains or containers.
>>To facilitate this, the ``dmadev`` library requires changes to allow
>>devices to register with or unregisters from DMA groups for inter-device
>communication.
>>This feature is planned for inclusion in DPDK 25.11.
>>
>>Signed-off-by: Vamsi Attunuru <vattunuru at marvell.com>
>>---
>> doc/guides/rel_notes/deprecation.rst | 7 +++++++
>> 1 file changed, 7 insertions(+)
>>
>>diff --git a/doc/guides/rel_notes/deprecation.rst
>>b/doc/guides/rel_notes/deprecation.rst
>>index e2d4125308..46836244dd 100644
>>--- a/doc/guides/rel_notes/deprecation.rst
>>+++ b/doc/guides/rel_notes/deprecation.rst
>>@@ -152,3 +152,10 @@ Deprecation Notices
>> * bus/vmbus: Starting DPDK 25.11, all the vmbus API defined in
>>   ``drivers/bus/vmbus/rte_bus_vmbus.h`` will become internal to DPDK.
>>   Those API functions are used internally by DPDK core and netvsc PMD.
>>+
>>+* dmadev: a new capability flag ``RTE_DMA_CAPA_INTER_DEV`` will be
>>+added
>>+  to advertise DMA device's inter-device DMA copy capability. To
>>+enable
>>+  this functionality, a few dmadev APIs will be added to configure the
>>+DMA
>>+  access groups, facilitating coordinated data communication between
>>devices.
>>+  A new ``dev_idx`` field will be added to the ``struct
>>+rte_dma_vchan_conf``
>>+  structure to configure a vchan for data transfers between any two
>>+DMA
>>devices.
>>--
>>2.34.1