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crypto: qat - update PFVF protocol for recovery

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Update the PFVF logic to handle restart and recovery. This adds the
following functions:

  * adf_pf2vf_notify_fatal_error(): allows the PF to notify VFs that the
    device detected a fatal error and requires a reset. This sends to
    VF the event `ADF_PF2VF_MSGTYPE_FATAL_ERROR`.
  * adf_pf2vf_wait_for_restarting_complete(): allows the PF to wait for
    `ADF_VF2PF_MSGTYPE_RESTARTING_COMPLETE` events from active VFs
    before proceeding with a reset.
  * adf_pf2vf_notify_restarted(): enables the PF to notify VFs with
    an `ADF_PF2VF_MSGTYPE_RESTARTED` event after recovery, indicating that
    the device is back to normal. This prompts VF drivers switch back to
    use the accelerator for workload processing.

These changes improve the communication and synchronization between PF
and VF drivers during system restart and recovery processes.

Signed-off-by: Mun Chun Yep <mun.chun.yep@intel.com>
Reviewed-by: Ahsan Atta <ahsan.atta@intel.com>
Reviewed-by: Markas Rapoportas <markas.rapoportas@intel.com>
Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Mun Chun Yep
2024-02-02 18:53:19 +08:00
committed by Herbert Xu
parent 758a0087db
commit ec26f8e6c7
8 changed files with 109 additions and 2 deletions
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drivers/crypto/intel/qat/qat_common/adf_accel_devices.h
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@@ -332,6 +332,7 @@ struct adf_accel_vf_info {
struct ratelimit_state vf2pf_ratelimit;
u32 vf_nr;
bool init;
bool restarting;
u8 vf_compat_ver;
};