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.
--
Regards,
Sudeep
