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net/mlx5: Support new MR features 

This patch adds the following items to IFC file.

1. MLX5_MKC_ACCESS_MODE_KSM enum value for creating KSM memory keys.
KSM access mode used when indirect MKey associated with fixed memory
size entries.

2. null_mkey field that is used to indicate non-present KLM/KSM
entries, where it causes the device to generate page fault event
when trying to access it.

3. struct mlx5_ifc_cmd_hca_cap_bits capability bits indicating
related value/field is supported:
* fixed_buffer_size - MLX5_MKC_ACCESS_MODE_KSM
* umr_extended_translation_offset - translation_offset_42_16
    in UMR ctrl segment
* null_mkey - null_mkey in QUERY_SPECIAL_CONTEXTS

Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Artemy Kovalyov 2017-01-02 11:37:41 +02:00 committed by David S. Miller
parent d5ea2df9ce
commit bcda1aca77
1 changed files with 8 additions and 2 deletions
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10
include/linux/mlx5/mlx5_ifc.h
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@ -782,11 +782,12 @@ struct mlx5_ifc_cmd_hca_cap_bits {
u8 log_max_eq[0x4];
u8 max_indirection[0x8];
u8 reserved_at_108[0x1];
u8 fixed_buffer_size[0x1];
u8 log_max_mrw_sz[0x7];
u8 reserved_at_110[0x2];
u8 log_max_bsf_list_size[0x6];
u8 reserved_at_118[0x2];
u8 umr_extended_translation_offset[0x1];
u8 null_mkey[0x1];
u8 log_max_klm_list_size[0x6];
u8 reserved_at_120[0xa];
@ -2569,6 +2570,7 @@ enum {
MLX5_MKC_ACCESS_MODE_PA = 0x0,
MLX5_MKC_ACCESS_MODE_MTT = 0x1,
MLX5_MKC_ACCESS_MODE_KLMS = 0x2,
MLX5_MKC_ACCESS_MODE_KSM = 0x3,
};
struct mlx5_ifc_mkc_bits {
@ -3677,6 +3679,10 @@ struct mlx5_ifc_query_special_contexts_out_bits {
u8 dump_fill_mkey[0x20];
u8 resd_lkey[0x20];
u8 null_mkey[0x20];
u8 reserved_at_a0[0x60];
};
struct mlx5_ifc_query_special_contexts_in_bits {