• Jacob Keller's avatar
    ice: add support for set/get of driver-stored firmware parameters · 7f9ab54d
    Jacob Keller authored
    Depending on the device configuration, the ice hardware may share the
    PTP hardware clock timer between multiple PFs. Each PF is informed by
    firmware during initialization of the PTP timer association.
    
    When bringing up PTP, only the PFs which own the timer shall allocate
    a PTP hardware clock. Other PFs associated with that timer must report
    the correct PTP clock index in order to allow userspace software the
    ability to know which ports are connected to the same clock.
    
    To support this, the firmware has driver shared parameters. These
    parameters enable one PF to write the clock index into firmware, and
    have other PFs read the associated value out. This enables the driver to
    have only a single PF allocate and control the device timer registers,
    while other PFs associated with that timer can report the correct clock
    in the ETHTOOL_GET_TS_INFO report.
    
    Add support for the necessary admin queue commands to enable reading and
    writing of the driver shared parameters. This will be used in a future
    change to enable sharing the PTP clock index between PF drivers.
    Signed-off-by: default avatarJacob Keller <jacob.e.keller@intel.com>
    Tested-by: default avatarTony Brelinski <tonyx.brelinski@intel.com>
    Signed-off-by: default avatarTony Nguyen <anthony.l.nguyen@intel.com>
    7f9ab54d
ice_adminq_cmd.h 67.7 KB