diff options
| author | Jacob Keller <jacob.e.keller@intel.com> | 2023-01-18 17:16:51 -0800 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2023-02-06 09:45:03 -0800 |
| commit | fa4a15c85c849e92257da6dbffeb1e3a6399fd7b (patch) | |
| tree | 4143a61a651dcc9b1b8cdeca5447c098f359559e /drivers/net/ethernet/intel/ice/ice_vf_lib.h | |
| parent | 5531bb851fba2a93ed0c1de1873ea563d8c1da76 (diff) | |
ice: introduce clear_reset_state operation
When hardware is reset, the VF relies on the VFGEN_RSTAT register to detect
when the VF is finished resetting. This is a tri-state register where 0
indicates a reset is in progress, 1 indicates the hardware is done
resetting, and 2 indicates that the software is done resetting.
Currently the PF driver relies on the device hardware resetting VFGEN_RSTAT
when a global reset occurs. This works ok, but it does mean that the VF
might not immediately notice a reset when the driver first detects that the
global reset is occurring.
This is also problematic for Scalable IOV, because there is no read/write
equivalent VFGEN_RSTAT register for the Scalable VSI type. Instead, the
Scalable IOV VFs will need to emulate this register.
To support this, introduce a new VF operation, clear_reset_state, which is
called when the PF driver first detects a global reset. The Single Root IOV
implementation can just write to VFGEN_RSTAT to ensure it's cleared
immediately, without waiting for the actual hardware reset to begin. The
Scalable IOV implementation will use this as part of its tracking of the
reset status to allow properly reporting the emulated VFGEN_RSTAT to the VF
driver.
Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Marek Szlosek <marek.szlosek@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel/ice/ice_vf_lib.h')
| -rw-r--r-- | drivers/net/ethernet/intel/ice/ice_vf_lib.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/ethernet/intel/ice/ice_vf_lib.h b/drivers/net/ethernet/intel/ice/ice_vf_lib.h index e3d94f3ca40d..5bb75edb6cef 100644 --- a/drivers/net/ethernet/intel/ice/ice_vf_lib.h +++ b/drivers/net/ethernet/intel/ice/ice_vf_lib.h @@ -56,6 +56,7 @@ struct ice_mdd_vf_events { struct ice_vf_ops { enum ice_disq_rst_src reset_type; void (*free)(struct ice_vf *vf); + void (*clear_reset_state)(struct ice_vf *vf); void (*clear_mbx_register)(struct ice_vf *vf); void (*trigger_reset_register)(struct ice_vf *vf, bool is_vflr); bool (*poll_reset_status)(struct ice_vf *vf); @@ -213,7 +214,7 @@ u16 ice_get_num_vfs(struct ice_pf *pf); struct ice_vsi *ice_get_vf_vsi(struct ice_vf *vf); bool ice_is_vf_disabled(struct ice_vf *vf); int ice_check_vf_ready_for_cfg(struct ice_vf *vf); -void ice_set_vf_state_qs_dis(struct ice_vf *vf); +void ice_set_vf_state_dis(struct ice_vf *vf); bool ice_is_any_vf_in_unicast_promisc(struct ice_pf *pf); void ice_vf_get_promisc_masks(struct ice_vf *vf, struct ice_vsi *vsi, @@ -259,7 +260,7 @@ static inline int ice_check_vf_ready_for_cfg(struct ice_vf *vf) return -EOPNOTSUPP; } -static inline void ice_set_vf_state_qs_dis(struct ice_vf *vf) +static inline void ice_set_vf_state_dis(struct ice_vf *vf) { } |