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35293cb3 |
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12-Sep-2023 |
Hariprasad Kelam <hkelam@marvell.com> |
octeontx2-pf: Enable PTP PPS output support PTP block supports generating PPS output signal on GPIO pin. This patch adds the support in the PTP PHC driver using standard periodic output interface. User can enable/disable/configure PPS by writing to the below sysfs entry echo perout.index start.sec start.nsec period.sec period.nsec > /sys/class/ptp/ptp0/period Example to generate 50% duty cycle PPS signal: echo 0 0 0 0 500000000 > /sys/class/ptp/ptp0/period Signed-off-by: Hariprasad Kelam <hkelam@marvell.com> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com> Signed-off-by: Sai Krishna <saikrishnag@marvell.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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bdf79b12 |
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21-Aug-2023 |
Sai Krishna <saikrishnag@marvell.com> |
octeontx2-pf: Use PTP HW timestamp counter atomic update feature 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@marvell.com> Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com> Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Leon Romanovsky <leonro@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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2ef4e45d |
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10-Sep-2022 |
Naveen Mamindlapalli <naveenm@marvell.com> |
octeontx2-af: Add PTP PPS Errata workaround on CN10K silicon Errata: The ptp_clock_hi rollsover to zero one clock cycle before it reaches one second boundary. As a result, the pps threshold comparison fails after one second and the pps output signal won't toggle further. This patch workarounds the issue by programming the pps_lo_incr register to 500msec minus one clock cycle period, ensuring that the pps threshold comparison succeeds at one second rollover boundary and pps edge toggles. After that point, the driver will have enough time (~500msec) to reset the pps threshold value. After each one second boundary, hrtimer is invoked which resets the pps threshold value. Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com> Signed-off-by: Rakesh Babu Saladi <rsaladi2@marvell.com> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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2958d17a |
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10-Sep-2022 |
Hariprasad Kelam <hkelam@marvell.com> |
octeontx2-pf: Add support for ptp 1-step mode on CN10K silicon Add support for ptp 1-step mode using timecounter. The seconds and nanoseconds to be updated in PTP header are calculated by adding the timecounter offset to the free running PTP clock counter time. The PF driver periodically gets the PTP clock time using AF mbox. The 1-step support uses HW feature to update correction field rather than OriginTimestamp field in PTP header. Signed-off-by: Hariprasad Kelam <hkelam@marvell.com> Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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74c1b233 |
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20-Feb-2022 |
Naveen Mamindlapalli <naveenm@marvell.com> |
octeontx2-pf: cn10k: add support for new ptp timestamp format The cn10k hardware ptp timestamp format has been modified primarily to support 1-step ptp clock. The 64-bit timestamp used by hardware is split into two 32-bit fields, the upper one holds seconds, the lower one nanoseconds. A new register (PTP_CLOCK_SEC) has been added that returns the current seconds value. The nanoseconds register PTP_CLOCK_HI resets after every second. The cn10k RPM block provides Rx/Tx timestamps to the NIX block using the new timestamp format. The software can read the current timestamp in nanoseconds by reading both PTP_CLOCK_SEC & PTP_CLOCK_HI registers. This patch provides support for new timestamp format. Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com> Signed-off-by: Rakesh Babu Saladi <rsaladi2@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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8581fd40 |
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02-Dec-2021 |
Jakub Kicinski <kuba@kernel.org> |
treewide: Add missing includes masked by cgroup -> bpf dependency cgroup.h (therefore swap.h, therefore half of the universe) includes bpf.h which in turn includes module.h and slab.h. Since we're about to get rid of that dependency we need to clean things up. v2: drop the cpu.h include from cacheinfo.h, it's not necessary and it makes riscv sensitive to ordering of include files. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Christoph Hellwig <hch@lst.de> Acked-by: Krzysztof WilczyĆski <kw@linux.com> Acked-by: Peter Chen <peter.chen@kernel.org> Acked-by: SeongJae Park <sj@kernel.org> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/all/20211120035253.72074-1-kuba@kernel.org/ # v1 Link: https://lore.kernel.org/all/20211120165528.197359-1-kuba@kernel.org/ # cacheinfo discussion Link: https://lore.kernel.org/bpf/20211202203400.1208663-1-kuba@kernel.org
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0e9e7598 |
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15-Oct-2021 |
Arnd Bergmann <arnd@arndb.de> |
octeontx2-nic: fix mixed module build Building the VF and PF side of this driver differently, with one being a loadable module and the other one built-in results in a link failure for the common PTP driver: ld.lld: error: undefined symbol: __this_module >>> referenced by otx2_ptp.c >>> net/ethernet/marvell/octeontx2/nic/otx2_ptp.o:(otx2_ptp_init) in archive drivers/built-in.a >>> referenced by otx2_ptp.c >>> net/ethernet/marvell/octeontx2/nic/otx2_ptp.o:(otx2_ptp_init) in archive drivers/built-in.a Move the otx2_ptp.c code into a separate module that gets built for both configurations, making it built-in if at least one of the other two is built-in. Fixes: 43510ef4ddad ("octeontx2-nicvf: Add PTP hardware clock support to NIX VF") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
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75f81afb |
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29-Sep-2021 |
Colin Ian King <colin.king@canonical.com> |
octeontx2-af: Remove redundant initialization of variable pin The variable pin is being initialized with a value that is never read, it is being updated later on in only one case of a switch statement. The assignment is redundant and can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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43510ef4 |
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28-Sep-2021 |
Naveen Mamindlapalli <naveenm@marvell.com> |
octeontx2-nicvf: Add PTP hardware clock support to NIX VF This patch adds PTP PHC support to NIX VF interfaces. This enables a VF to run PTP master/slave instance. PTP block being a shared hardware resource it is recommended to avoid running multiple PTP instances in the system which will impact the PTP clock accuracy. Signed-off-by: Naveen Mamindlapalli <naveenm@marvell.com> Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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99bbc4ae |
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28-Sep-2021 |
Yi Guo <yig@marvell.com> |
octeontx2-af: Add external ptp input clock PTP hardware block can be configured to utilize the external clock. Also the current ptp timestamp can be captured when external trigger is applied on a gpio pin. These features are required in scenarios like connecting a external timing device to the chip for time synchronization. The timing device provides the clock and trigger(PPS signal) to the PTP block. This patch does the following: 1. configures PTP block to use external clock frequency and timestamp capture on external event. 2. sends PTP_REQ_EXTTS events to kernel ptp phc susbsytem with captured timestamps 3. aligns PPS edge to adjusted ptp clock in the ptp device by setting the PPS_THRESH to the reminder of the last timestamp value captured by external PPS Signed-off-by: Yi Guo <yig@marvell.com> Signed-off-by: Hariprasad Kelam <hkelam@marvell.com> Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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cb0e3ec4 |
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27-Aug-2021 |
Sunil Goutham <sgoutham@marvell.com> |
octeontx2-pf: Fix inconsistent license text Fixed inconsistent license text across the netdev drivers. Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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b8d90937 |
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09-Dec-2020 |
Zheng Yongjun <zhengyongjun3@huawei.com> |
net: marvell: octeontx2: simplify the otx2_ptp_adjfine() Simplify the return expression. Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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c9c12d33 |
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24-Aug-2020 |
Aleksey Makarov <amakarov@marvell.com> |
octeontx2-pf: Add support for PTP clock This patch adds PTP clock and uses it in Octeontx2 network device. PTP clock uses mailbox calls to access the hardware counter on the RVU side. Co-developed-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com> Signed-off-by: Aleksey Makarov <amakarov@marvell.com> Signed-off-by: Sunil Goutham <sgoutham@marvell.com> Acked-by: Richard Cochran <richardcochran@gmail.com> Acked-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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