xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

net/mlx5: Add fast unload support in shutdown flow

Browse Source 
Adding a support to flush all HW resources with one FW command and
skip all the heavy unload flows of the driver on kernel shutdown.
There's no need to free all the SW context since a new fresh kernel
will be loaded afterwards.

Regarding the FW resources, they should be closed, otherwise we will
have leakage in the FW. To accelerate this flow, we execute one command
in the beginning that tells the FW that the driver isn't going to close
any of the FW resources and asks the FW to clean up everything.
Once the commands complete, it's safe to close the PCI resources and
finish the routine.

Signed-off-by: Majd Dibbiny <majd@mellanox.com>
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
This commit is contained in:
Majd Dibbiny
2017-02-09 14:20:12 +02:00
committed by Saeed Mahameed
parent 4525abeaae
commit 8812c24d28
5 changed files with 73 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

14
include/linux/mlx5/mlx5_ifc.h
View File

@@ -801,7 +801,8 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 max_indirection[0x8];
u8 fixed_buffer_size[0x1];
u8 log_max_mrw_sz[0x7];
u8 reserved_at_110[0x2];
u8 force_teardown[0x1];
u8 reserved_at_111[0x1];
u8 log_max_bsf_list_size[0x6];
u8 umr_extended_translation_offset[0x1];
u8 null_mkey[0x1];
@@ -3094,18 +3095,25 @@ struct mlx5_ifc_tsar_element_bits {
u8 reserved_at_10[0x10];
};
enum {
MLX5_TEARDOWN_HCA_OUT_FORCE_STATE_SUCCESS = 0x0,
MLX5_TEARDOWN_HCA_OUT_FORCE_STATE_FAIL = 0x1,
};
struct mlx5_ifc_teardown_hca_out_bits {
u8 status[0x8];
u8 reserved_at_8[0x18];
u8 syndrome[0x20];
u8 reserved_at_40[0x40];
u8 reserved_at_40[0x3f];
u8 force_state[0x1];
};
enum {
MLX5_TEARDOWN_HCA_IN_PROFILE_GRACEFUL_CLOSE = 0x0,
MLX5_TEARDOWN_HCA_IN_PROFILE_PANIC_CLOSE = 0x1,
MLX5_TEARDOWN_HCA_IN_PROFILE_FORCE_CLOSE = 0x1,
};
struct mlx5_ifc_teardown_hca_in_bits {