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Message-ID: <20230822141412.GI6029@unreal> Date: Tue, 22 Aug 2023 17:14:12 +0300 From: Leon Romanovsky <leon@...nel.org> To: Sai Krishna <saikrishnag@...vell.com> Cc: davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, sgoutham@...vell.com, gakula@...vell.com, sbhatta@...vell.com, hkelam@...vell.com, richardcochran@...il.com, kalesh-anakkur.purayil@...adcom.com, Naveen Mamindlapalli <naveenm@...vell.com> Subject: Re: [net-next PATCH v4] octeontx2-pf: Use PTP HW timestamp counter atomic update feature On Mon, Aug 21, 2023 at 04:06:29PM +0530, Sai Krishna wrote: > Some of the newer silicon versions in CN10K series supports a feature > where in the current PTP timestamp in HW can be updated atomically > without losing any cpu cycles unlike read/modify/write register. > This patch uses this feature so that PTP accuracy can be improved > while adjusting the master offset in HW. There is no need for SW > timecounter when using this feature. So removed references to SW > timecounter wherever appropriate. > > Signed-off-by: Sai Krishna <saikrishnag@...vell.com> > Signed-off-by: Naveen Mamindlapalli <naveenm@...vell.com> > Signed-off-by: Sunil Kovvuri Goutham <sgoutham@...vell.com> > Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@...adcom.com> > --- > v4: > - Addressed review comments given by Leon Romanovsky > 1. Unlocked mutex in error conditions. > v3: > - Addressed review comments given by Jakub Kicinski > 1. Fixed re-ordering of headers in alphabetical order > 2. Refactored SoC revision identification logic > 3. CN10K errata revisions can be different from atomic update > supported revision devices. > 4. Removed ptp device check. > v2: > - Addressed review comments given by Simon Horman, Kalesh Anakkur Purayil > 1. Removed inline keyword for function in .c file > 2. Modified/optimized conditions related boolean > > .../net/ethernet/marvell/octeontx2/af/mbox.h | 12 ++ > .../net/ethernet/marvell/octeontx2/af/ptp.c | 155 +++++++++++++-- > .../net/ethernet/marvell/octeontx2/af/ptp.h | 3 +- > .../net/ethernet/marvell/octeontx2/af/rvu.c | 2 +- > .../net/ethernet/marvell/octeontx2/af/rvu.h | 12 ++ > .../marvell/octeontx2/nic/otx2_common.h | 1 + > .../ethernet/marvell/octeontx2/nic/otx2_ptp.c | 177 ++++++++++++++---- > 7 files changed, 307 insertions(+), 55 deletions(-) > Thanks, Reviewed-by: Leon Romanovsky <leonro@...dia.com>
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