Re: [PATCH 10/14] soc: hisilicon: kunpeng_hccs: Simplify PCC shared memory region handling

[lihuisong (C)]

在 2025/3/5 19:34, Sudeep Holla 写道:
> On Wed, Mar 05, 2025 at 03:14:50PM +0800, lihuisong (C) wrote:
> > 在 2025/3/3 18:51, Sudeep Holla 写道:
> > > The PCC driver now handles mapping and unmapping of shared memory
> > > areas as part of pcc_mbox_{request,free}_channel(). Without these before,
> > > this Kunpeng HCCS driver did handling of those mappings like several
> > > other PCC mailbox client drivers.
> > >
> > > There were redundant operations, leading to unnecessary code. Maintaining
> > > the consistency across these driver was harder due to scattered handling
> > > of shmem.
> > >
> > > Just use the mapped shmem and remove all redundant operations from this
> > > driver.
> > >
> > > Cc: Huisong Li <lihuisong@xxxxxxxxxx>
> > > Signed-off-by: Sudeep Holla <sudeep.holla@xxxxxxx>
> > With belows to change,
> > Reviewed-by: Huisong Li <lihuisong@xxxxxxxxxx>
> Thanks!
>
> [...]
>
> > > -	if (!pcc_chan->shmem_base_addr ||
> > > -	    pcc_chan->shmem_size != HCCS_PCC_SHARE_MEM_BYTES) {
> > > +	if (pcc_chan->shmem_size != HCCS_PCC_SHARE_MEM_BYTES) {
> > >    		dev_err(dev, "The base address or size (%llu) of PCC communication region is invalid.\n",
> > >    			pcc_chan->shmem_size);
> > Now the check of shared base address is not here. The log about this address
> > no need to be printed.
> >
> > Can you help me fix it like:
> >
> > dev_err(dev, "The base size (%llu) of PCC communication region must be %d Byte.\n",
> >   			pcc_chan->shmem_size, HCCS_PCC_SHARE_MEM_BYTES
> > );
> Sure.
>
> Did you get a chance to validate this driver and any other users of PCC
> on your platform with these changes + the error handling fix you pointed
> out ? That would be very useful as I don't have any set up to test.
Sure, I'll test this series.
> .