Re: [PATCH v2 5/9] soc: mailbox: Add cmdq_pkt_finalize_loop to support looping cmd with irq

["Jason-JH Lin (林睿祥)" <Jason-JH.Lin@mediatek.com>]

On Mon, 2023-10-23 at 11:50 +0200, AngeloGioacchino Del Regno wrote:
> Il 23/10/23 06:37, Jason-JH.Lin ha scritto:
> > Add cmdq_pkt_finalize_loop to CMDQ driver.
> > 
> > cmdq_pkt_finalize_loop appends end of command(EOC) instruction and
> > jump to start of command buffer instruction to make the command
> > buffer loopable.
> > 
> > GCE irq occurs when GCE executes to the EOC instruction.
> > CMDQ client can use a loop flag to mark the CMDQ packet as looping
> > packet. If the CMDQ packet is a loopping packet, GCE irq handler
> > won't delete the CMDQ task and disable the GCE thread.
> > 
> > Signed-off-by: Jason-JH.Lin <jason-jh.lin@mediatek.com>
> > ---
> >   drivers/mailbox/mtk-cmdq-mailbox.c       | 11 +++++++++++
> >   drivers/soc/mediatek/mtk-cmdq-helper.c   | 23
> > +++++++++++++++++++++++
> >   include/linux/mailbox/mtk-cmdq-mailbox.h |  1 +
> >   include/linux/soc/mediatek/mtk-cmdq.h    |  8 ++++++++
> >   4 files changed, 43 insertions(+)
> > 
> > diff --git a/drivers/mailbox/mtk-cmdq-mailbox.c
> > b/drivers/mailbox/mtk-cmdq-mailbox.c
> > index 4d62b07c1411..56fe01cd9731 100644
> > --- a/drivers/mailbox/mtk-cmdq-mailbox.c
> > +++ b/drivers/mailbox/mtk-cmdq-mailbox.c
> 
> It's true that without the changes in soc/mediatek this is not doing
> anything, but
> mailbox/mtk-cmdq-mailbox.c goes through a different maintainer...
> 
> Please split the changes to drivers/mailbox/mtk-cmdq-mailbox.c and
> its header to a
> different commit.
> 
> Hint:
> 1. soc: mediatek: cmdq: Add cmdq_pkt_finalize_loop for looping cmd
> with irq
> 2. mailbox: mtk-cmdq: Support GCE loop packets in interrupt handler
> 

That's what I have done in the previous version.
Because of Krzysztof's comment here:
https://patchwork.kernel.org/project/linux-mediatek/patch/20230918192204.32263-8-jason-jh.lin@mediatek.com/#25527450
I squash them together. I'm not sure if I misunderstood that.

But I think I should follow the maintainer who can apply the patch.
So I'll split it in the next version.

Regards,
Jason-JH.Lin

> Thanks,
> Angelo
>