[PATCH v4 4/4] dma/acc: add doc

[fengchengwen]

On 2025/10/15 18:05, Thomas Monjalon wrote:
> 13/10/2025 11:11, Chengwen Feng:
>> +HISILICON Accelerator DMA Driver
>> +================================
>> +
>> +Kunpeng SoC has an internal accelerator unit which includes zip function, and
>> +the zip also supports data copy and fill. This driver exposes this capability to
>> +DPDK application.
> How is it different of drivers/dma/hisilicon/ ?
>
> "
> Kunpeng SoC has an internal DMA unit which can be used by application
> to accelerate data copies.
> "
>
> If it is the same hardware (Kunpeng),
> I recommend having a single driver, or a single directory.
> Also we already have a driver named "acc" in baseband.


they belong to different hardware IP of Kunpeng platform, /dma/hisilicon 
is the PCIE subsystem DMA's driver, while this acc is the 
Accelerator(ZIP) subsystem DMA's driver.  they don't exist in the same 
specific Kunpeng Soc.

a single driver will add complex.

as for a single directory, should we do for all vendor?  I see there 
are  dpaa and dpaa2, ioat and idxd both belong to vendor platform.

if there are no rule to have same name with different subsystem driver, 
I prefer keep it.


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