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1060707e38
mirror_ubuntu-kernels/drivers/net/ethernet/intel/ice
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Jacob Keller 1060707e38 ptp: introduce helpers to adjust by scaled parts per million 
Many drivers implement the .adjfreq or .adjfine PTP op function with the
same basic logic:

  1. Determine a base frequency value
  2. Multiply this by the abs() of the requested adjustment, then divide by
     the appropriate divisor (1 billion, or 65,536 billion).
  3. Add or subtract this difference from the base frequency to calculate a
     new adjustment.

A few drivers need the difference and direction rather than the combined
new increment value.

I recently converted the Intel drivers to .adjfine and the scaled parts per
million (65.536 parts per billion) logic. To avoid overflow with minimal
loss of precision, mul_u64_u64_div_u64 was used.

The basic logic used by all of these drivers is very similar, and leads to
a lot of duplicate code to perform the same task.

Rather than keep this duplicate code, introduce diff_by_scaled_ppm and
adjust_by_scaled_ppm. These helper functions calculate the difference or
adjustment necessary based on the scaled parts per million input.

The diff_by_scaled_ppm function returns true if the difference should be
subtracted, and false otherwise.

Update the Intel drivers to use the new helper functions. Other vendor
drivers will be converted to .adjfine and this helper function in the
following changes.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-31 11:14:16 +00:00
..
ice_adminq_cmd.h ice: Add additional flags to ice_nvm_write_activate 2022-08-24 08:45:54 -07:00
ice_arfs.c ice: arfs: fix use-after-free when freeing @rx_cpu_rmap 2022-04-08 09:08:36 -07:00
ice_arfs.h ice: remove circular header dependencies on ice.h 2022-03-14 17:22:58 -07:00
ice_base.c net: drop the weight argument from netif_napi_add 2022-09-28 18:57:14 -07:00
ice_base.h
ice_cgu_regs.h
ice_common.c ice: support features on new E810T variants 2022-09-28 11:40:57 -07:00
ice_common.h ice: Add port option admin queue commands 2022-08-24 08:45:53 -07:00
ice_controlq.c
ice_controlq.h
ice_dcb_lib.c ice: Add hot path support for 802.1Q and 802.1ad VLAN offloads 2022-02-09 09:24:45 -08:00
ice_dcb_lib.h
ice_dcb_nl.c
ice_dcb_nl.h
ice_dcb.c
ice_dcb.h ice: remove circular header dependencies on ice.h 2022-03-14 17:22:58 -07:00
ice_devids.h ice: support features on new E810T variants 2022-09-28 11:40:57 -07:00
ice_devlink.c ice: Implement devlink port split operations 2022-08-24 08:45:55 -07:00
ice_devlink.h
ice_eswitch.c net: drop the weight argument from netif_napi_add 2022-09-28 18:57:14 -07:00
ice_eswitch.h ice: allow creating VFs for !CONFIG_NET_SWITCHDEV 2022-04-14 08:19:54 -07:00
ice_ethtool_fdir.c ice: Use correct order for the parameters of devm_kcalloc() 2022-06-08 08:55:13 -07:00
ice_ethtool.c ice: Add additional CSR registers to ETHTOOL_GREGS 2022-10-28 21:57:29 -07:00
ice_fdir.c
ice_fdir.h
ice_flex_pipe.c ice: Add support for PPPoE hardware offload 2022-07-26 10:56:32 -07:00
ice_flex_pipe.h ice: Fix FV offset searching 2022-03-11 08:28:27 -08:00
ice_flex_type.h ice: Support GTP-U and GTP-C offload in switchdev 2022-03-11 08:28:28 -08:00
ice_flow.c ice: remove circular header dependencies on ice.h 2022-03-14 17:22:58 -07:00
ice_flow.h ice: remove circular header dependencies on ice.h 2022-03-14 17:22:58 -07:00
ice_fltr.c ice: Ignore error message when setting same promiscuous mode 2022-08-17 09:30:44 -07:00
ice_fltr.h
ice_fw_update.c ice: handle E822 generic device ID in PLDM header 2022-07-12 09:25:34 -07:00
ice_fw_update.h
ice_gnss.c ice: add write functionality for GNSS TTY 2022-07-21 13:25:17 -07:00
ice_gnss.h ice: add write functionality for GNSS TTY 2022-07-21 13:25:17 -07:00
ice_hw_autogen.h ice: Add support Flex RXD 2022-10-27 13:23:43 +02:00
ice_idc_int.h ice: remove circular header dependencies on ice.h 2022-03-14 17:22:58 -07:00
ice_idc.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-05-12 16:15:30 -07:00
ice_lag.c ice: remove non-inclusive language 2022-08-18 08:26:11 -07:00
ice_lag.h ice: remove non-inclusive language 2022-08-18 08:26:11 -07:00
ice_lan_tx_rx.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-02-10 17:29:56 -08:00
ice_lib.c ice: reorder PF/representor devlink port register/unregister flows 2022-09-27 07:54:45 -07:00
ice_lib.h ice: Implement control of FCS/CRC stripping 2022-08-18 08:08:23 -07:00
ice_main.c net: Remove the obsolte u64_stats_fetch_*_irq() users (drivers). 2022-10-28 20:13:54 -07:00
ice_nvm.c ice: Add additional flags to ice_nvm_write_activate 2022-08-24 08:45:54 -07:00
ice_nvm.h ice: Add additional flags to ice_nvm_write_activate 2022-08-24 08:45:54 -07:00
ice_osdep.h ice: remove circular header dependencies on ice.h 2022-03-14 17:22:58 -07:00
ice_pf_vsi_vlan_ops.c ice: Support configuring the device to Double VLAN Mode 2022-02-09 09:24:45 -08:00
ice_pf_vsi_vlan_ops.h ice: Add outer_vlan_ops and VSI specific VLAN ops implementations 2022-02-09 09:24:45 -08:00
ice_protocol_type.h ice: Add L2TPv3 hardware offload support 2022-09-20 09:13:38 +02:00
ice_ptp_consts.h
ice_ptp_hw.c ice: Add low latency Tx timestamp read 2022-09-20 16:14:28 -07:00
ice_ptp_hw.h ice: Add low latency Tx timestamp read 2022-09-20 16:14:28 -07:00
ice_ptp.c ptp: introduce helpers to adjust by scaled parts per million 2022-10-31 11:14:16 +00:00
ice_ptp.h ice: Merge pin initialization of E810 and E810T adapters 2022-09-28 11:40:57 -07:00
ice_repr.c ice: reorder PF/representor devlink port register/unregister flows 2022-09-27 07:54:45 -07:00
ice_repr.h ice: remove circular header dependencies on ice.h 2022-03-14 17:22:58 -07:00
ice_sbq_cmd.h
ice_sched.c ice: Simplify memory allocation in ice_sched_init_port() 2022-09-06 13:55:47 -07:00
ice_sched.h
ice_sriov.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-07-28 18:21:16 -07:00
ice_sriov.h ice: introduce ice_virtchnl.c and ice_virtchnl.h 2022-03-15 13:23:10 -07:00
ice_switch.c ice: Add L2TPv3 hardware offload support 2022-09-20 09:13:38 +02:00
ice_switch.h ice: Introduce enabling promiscuous mode on multiple VF's 2022-07-28 11:44:22 -07:00
ice_tc_lib.c ice: Enable RX queue selection using skbedit action 2022-10-25 10:32:40 +02:00
ice_tc_lib.h ice: Enable RX queue selection using skbedit action 2022-10-25 10:32:40 +02:00
ice_trace.h ice: add trace events for tx timestamps 2022-03-16 10:38:15 -07:00
ice_txrx_lib.c Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue 2022-02-10 11:00:13 +00:00
ice_txrx_lib.h ice: Add hot path support for 802.1Q and 802.1ad VLAN offloads 2022-02-09 09:24:45 -08:00
ice_txrx.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2022-09-29 14:30:51 -07:00
ice_txrx.h ice: Implement control of FCS/CRC stripping 2022-08-18 08:08:23 -07:00
ice_type.h ice: Add low latency Tx timestamp read 2022-09-20 16:14:28 -07:00
ice_vf_lib_private.h ice: remove PF pointer from ice_check_vf_init 2022-03-15 13:23:14 -07:00
ice_vf_lib.c ice: Fix VF not able to send tagged traffic with no VLAN filters 2022-08-17 09:30:44 -07:00
ice_vf_lib.h ice: Fix promiscuous mode not turning off 2022-07-28 11:44:40 -07:00
ice_vf_mbx.c ice: rename ice_sriov.c to ice_vf_mbx.c 2022-03-14 17:22:58 -07:00
ice_vf_mbx.h ice: rename ice_sriov.c to ice_vf_mbx.c 2022-03-14 17:22:58 -07:00
ice_vf_vsi_vlan_ops.c ice: rename ice_virtchnl_pf.c to ice_sriov.c 2022-03-14 17:22:58 -07:00
ice_vf_vsi_vlan_ops.h ice: Add support for VIRTCHNL_VF_OFFLOAD_VLAN_V2 2022-02-09 09:24:45 -08:00
ice_virtchnl_allowlist.c ice: Add support Flex RXD 2022-10-27 13:23:43 +02:00
ice_virtchnl_allowlist.h
ice_virtchnl_fdir.c ice: always check VF VSI pointer values 2022-05-05 11:28:36 -07:00
ice_virtchnl_fdir.h ice: introduce ice_vf_lib.c, ice_vf_lib.h, and ice_vf_lib_private.h 2022-03-15 13:22:13 -07:00
ice_virtchnl.c ice: Add support Flex RXD 2022-10-27 13:23:43 +02:00
ice_virtchnl.h ice: Add support Flex RXD 2022-10-27 13:23:43 +02:00
ice_vlan_mode.c ice: Add support for VLAN TPID filters in switchdev 2022-06-30 13:53:33 -07:00
ice_vlan_mode.h ice: Support configuring the device to Double VLAN Mode 2022-02-09 09:24:45 -08:00
ice_vlan.h
ice_vsi_vlan_lib.c ice: Support configuring the device to Double VLAN Mode 2022-02-09 09:24:45 -08:00
ice_vsi_vlan_lib.h ice: Add outer_vlan_ops and VSI specific VLAN ops implementations 2022-02-09 09:24:45 -08:00
ice_vsi_vlan_ops.c ice: Add outer_vlan_ops and VSI specific VLAN ops implementations 2022-02-09 09:24:45 -08:00
ice_vsi_vlan_ops.h ice: Support configuring the device to Double VLAN Mode 2022-02-09 09:24:45 -08:00
ice_xsk.c ice: xsk: drop power of 2 ring size restriction for AF_XDP 2022-09-27 09:01:01 -07:00
ice_xsk.h ice: xsk: change batched Tx descriptor cleaning 2022-09-27 08:11:02 -07:00
ice.h ice: Add support Flex RXD 2022-10-27 13:23:43 +02:00
Makefile ice: fix access-beyond-end in the switch code 2022-06-02 12:41:10 +02:00