[RFC PATCH 00/29] cover letter for net/qdma PMD

[aman.kumar at vvdntech.in]

On 19/07/22 5:42 pm, Thomas Monjalon <thomas at monjalon.net> wrote:
> 18/07/2022 20:15, aman.kumar at vvdntech.in:
> > On 07/07/22 7:49 pm, Hemant Agrawal <hemant.agrawal at oss.nxp.com> wrote:
> >>
> >> On 7/7/2022 7:45 PM, Thomas Monjalon wrote:
> >>> 07/07/2022 15:55, Aman Kumar:
> >>>> On 07/07/22 12:27 pm, Thomas Monjalon wrote:
> >>>>> 06/07/2022 09:51, Aman Kumar:
> >>>>>> This patch series provides net PMD for VVDN's NR(5G) Hi-PHY
> >>>>>> solution over
> >>>>>> T1 telco card. These telco accelerator NIC cards are targeted for
> >>>>>> ORAN DU
> >>>>>> systems to offload inline NR Hi-PHY (split 7.2) operations. For the
> >>>>>> DU host,
> >>>>>> the cards typically appears as a basic NIC device. The device is
> >>>>>> based on
> >>>>>> AMD/Xilinx's Ultrasale MPSoC and RFSoC FPGA for which the inline
> >>>>>> Hi-PHY IP
> >>>>>> is developed by VVDN Technologies Private Limited.
> >>>>>> PCI_VENDOR: 0x1f44, Supported Devices: 0x0201, 0x0281
> >>>>>>
> >>>>>> Hardware-specs:
> >>>>>> https://www.xilinx.com/publications/product-briefs/xilinx-t1-product-brief.pdf
> >>>>>>
> >>>>>>
> >>>>>> - This series is an RFC and target for DPDK v22.11.
> >>>>>> - Currently, the PMD is supported only for x86_64 host.
> >>>>>> - Build machine used: Fedora 36 with gcc 12.1.1
> >>>>>> - The device communicates to host over AMD/Xilinx's QDMA subsystem for
> >>>>>>      PCIe interface. Link: https://docs.xilinx.com/r/en-US/pg302-qdma
> >>>>> That's unfortunate, there is something else called QDMA in NXP
> >>>>> solution:
> >>>>> https://git.dpdk.org/dpdk/tree/drivers/dma/dpaa2
> >>>> Is this going to create a conflict against this submission? I guess
> >>>> both are publicly available/known for long time.
> >>> If it's the marketing name, go for it,
> >>> but it is unfortunate.
> >>
> >> QDMA is a very generic name and many vendors have IP for it.
> >>
> >> My suggestions is the qualify the specific driver with vendor name i.e.
> >> amd_qdma or xilinx_qdma or something similar.
> >>
> >> NXP also did the same dpaa2_qdma
> >>
> >>
> > @Thomas, @Hemant,
> > Thank you for highlights and suggestions regarding conflicting names.
> > We've discussed this internally and came up with below plan.
> >
> > For v22.11 DPDK, we would like to submit patches with below renames:
> >   drivers/net/qdma -> drivers/net/t1
> >   drivers/net/qdma/qdma_*.c/h -> drivers/net/t1/t1_*.c/h
> >   driver/net/qdma/qdma_access -> driver/net/t1/base
> 
> Curious why "t1"?
> What is the meaning?

The hardware is commerically named as the "T1 card". T1 represents first card of the telco accelerator series.
https://www.xilinx.com/publications/product-briefs/xilinx-t1-product-brief.pdf