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

[Thomas Monjalon]

15/10/2025 13:10, 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.

When it is really different driver, it is OK to keep them separate.

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

OK but why it does not contain HiSilicon or Kunpeng in its name?
"acc" is a really short name, and already used.
Please find something else.