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net/mlx5: Handle sync reset unload event

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Added a new event handler to firmware sync reset, which is used to
support firmware sync reset flow on smart NIC. Adding this new stage to
the flow enables the firmware to ensure host PFs unload before ECPFs
unload, to avoid race of PFs recovery.

If firmware sends sync_reset_unload event to driver the driver should
unload and close all HW resources of the function. Once the driver
finishes unloading part, it can't get any more events from firmware as
event queues are closed, so it polls the reset state field to know when
to continue to next stage of the sync reset flow.

Added capability bit for supporting sync_reset_unload event.

Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Reviewed-by: Shay Drory <shayd@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
This commit is contained in:
Moshe Shemesh
2023-05-17 16:07:40 +03:00
committed by Saeed Mahameed
parent 6f8551f8d9
commit 7a9770f1bf
4 changed files with 104 additions and 6 deletions
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1
include/linux/mlx5/device.h
View File

@@ -716,6 +716,7 @@ enum sync_rst_state_type {
MLX5_SYNC_RST_STATE_RESET_REQUEST = 0x0,
MLX5_SYNC_RST_STATE_RESET_NOW = 0x1,
MLX5_SYNC_RST_STATE_RESET_ABORT = 0x2,
MLX5_SYNC_RST_STATE_RESET_UNLOAD = 0x3,
};
struct mlx5_eqe_sync_fw_update {

3
include/linux/mlx5/mlx5_ifc.h
View File

@@ -1755,7 +1755,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 reserved_at_328[0x2];
u8 relaxed_ordering_read[0x1];
u8 log_max_pd[0x5];
u8 reserved_at_330[0x7];
u8 reserved_at_330[0x6];
u8 pci_sync_for_fw_update_with_driver_unload[0x1];
u8 vnic_env_cnt_steering_fail[0x1];
u8 reserved_at_338[0x1];
u8 q_counter_aggregation[0x1];