[PATCH v2 7/8] common/mlx5: add LZ4 capabilities check

[Michael Baum <michaelba@nvidia.com>]

Add capabilities check for LZ4 decompression algorithm.

Signed-off-by: Michael Baum <michaelba@nvidia.com>
---
 drivers/common/mlx5/mlx5_devx_cmds.c |  6 ++++++
 drivers/common/mlx5/mlx5_devx_cmds.h |  3 +++
 drivers/common/mlx5/mlx5_prm.h       | 16 ++++++++++++++--
 3 files changed, 23 insertions(+), 2 deletions(-)

diff --git a/drivers/common/mlx5/mlx5_devx_cmds.c b/drivers/common/mlx5/mlx5_devx_cmds.c
index dfec4dcf1b..f30daa19c7 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.c
+++ b/drivers/common/mlx5/mlx5_devx_cmds.c
@@ -989,6 +989,12 @@ mlx5_devx_cmd_query_hca_attr(void *ctx,
 					      log_compress_mmo_size);
 	attr->log_max_mmo_decompress = MLX5_GET(cmd_hca_cap, hcattr,
 						log_decompress_mmo_size);
+	attr->decomp_lz4_data_only_en = MLX5_GET(cmd_hca_cap, hcattr,
+						 decompress_lz4_data_only_v2);
+	attr->decomp_lz4_no_checksum_en = MLX5_GET(cmd_hca_cap, hcattr,
+						 decompress_lz4_no_checksum_v2);
+	attr->decomp_lz4_checksum_en = MLX5_GET(cmd_hca_cap, hcattr,
+						decompress_lz4_checksum_v2);
 	attr->cqe_compression = MLX5_GET(cmd_hca_cap, hcattr, cqe_compression);
 	attr->mini_cqe_resp_flow_tag = MLX5_GET(cmd_hca_cap, hcattr,
 						mini_cqe_resp_flow_tag);
diff --git a/drivers/common/mlx5/mlx5_devx_cmds.h b/drivers/common/mlx5/mlx5_devx_cmds.h
index edb387e272..a82af9426d 100644
--- a/drivers/common/mlx5/mlx5_devx_cmds.h
+++ b/drivers/common/mlx5/mlx5_devx_cmds.h
@@ -267,6 +267,9 @@ struct mlx5_hca_attr {
 	uint32_t log_max_mmo_dma:5;
 	uint32_t log_max_mmo_compress:5;
 	uint32_t log_max_mmo_decompress:5;
+	uint32_t decomp_lz4_data_only_en:1;
+	uint32_t decomp_lz4_no_checksum_en:1;
+	uint32_t decomp_lz4_checksum_en:1;
 	uint32_t umr_modify_entity_size_disabled:1;
 	uint32_t umr_indirect_mkey_disabled:1;
 	uint32_t log_min_stride_wqe_sz:5;
diff --git a/drivers/common/mlx5/mlx5_prm.h b/drivers/common/mlx5/mlx5_prm.h
index 377cbfab87..f89af8b96b 100644
--- a/drivers/common/mlx5/mlx5_prm.h
+++ b/drivers/common/mlx5/mlx5_prm.h
@@ -578,9 +578,19 @@ struct mlx5_rdma_write_wqe {
 #define	MLX5_OPC_MOD_MMO_DECOMP 0x3u
 #define	MLX5_OPC_MOD_MMO_DMA 0x1u
 
+#define WQE_GGA_DECOMP_DEFLATE 0x0u
+#define WQE_GGA_DECOMP_LZ4 0x2u
+
+#define MLX5_GGA_DECOMP_LZ4_BLOCK_WITHOUT_CHECKSUM 0x1u
+#define MLX5_GGA_DECOMP_LZ4_BLOCK_WITH_CHECKSUM 0x2u
+
 #define WQE_GGA_COMP_WIN_SIZE_OFFSET 12u
 #define WQE_GGA_COMP_BLOCK_SIZE_OFFSET 16u
 #define WQE_GGA_COMP_DYNAMIC_SIZE_OFFSET 20u
+#define WQE_GGA_DECOMP_PARAMS_OFFSET 20u
+#define WQE_GGA_DECOMP_TYPE_OFFSET 8u
+#define WQE_GGA_DECOMP_BLOCK_INDEPENDENT_OFFSET 22u
+
 #define MLX5_GGA_COMP_WIN_SIZE_UNITS 1024u
 #define MLX5_GGA_COMP_WIN_SIZE_MAX (32u * MLX5_GGA_COMP_WIN_SIZE_UNITS)
 #define MLX5_GGA_COMP_LOG_BLOCK_SIZE_MAX 15u
@@ -599,7 +609,7 @@ struct mlx5_gga_wqe {
 	uint32_t opcode;
 	uint32_t sq_ds;
 	uint32_t flags;
-	uint32_t gga_ctrl1;  /* ws 12-15, bs 16-19, dyns 20-23. */
+	uint32_t gga_ctrl1;
 	uint32_t gga_ctrl2;
 	uint32_t opaque_lkey;
 	uint64_t opaque_vaddr;
@@ -1434,7 +1444,9 @@ struct mlx5_ifc_cmd_hca_cap_bits {
 	u8 log_dma_mmo_size[0x5];
 	u8 reserved_at_70[0x3];
 	u8 log_compress_mmo_size[0x5];
-	u8 reserved_at_78[0x3];
+	u8 decompress_lz4_data_only_v2[0x1];
+	u8 decompress_lz4_no_checksum_v2[0x1];
+	u8 decompress_lz4_checksum_v2[0x1];
 	u8 log_decompress_mmo_size[0x5];
 	u8 log_max_srq_sz[0x8];
 	u8 log_max_qp_sz[0x8];
-- 
2.25.1