IB/mlx5: Device memory support in mlx5_ib
This patch adds the mlx5_ib driver implementation for the device
memory allocation API.
It implements the ib_device callbacks for allocation and deallocation
operations as well as a new mmap command support which allows mapping
an allocated device memory to a VMA.
The change also adds reporting of device memory maximum size and
alignment parameters reported in device capabilities.
The allocation/deallocation operations are using new firmware
commands to allocate MEMIC memory on the device.
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
diff --git a/include/linux/mlx5/mlx5_ifc.h b/include/linux/mlx5/mlx5_ifc.h
index 13c3bf2..a64e59b 100644
--- a/include/linux/mlx5/mlx5_ifc.h
+++ b/include/linux/mlx5/mlx5_ifc.h
@@ -92,6 +92,8 @@ enum {
MLX5_CMD_OP_DESTROY_MKEY = 0x202,
MLX5_CMD_OP_QUERY_SPECIAL_CONTEXTS = 0x203,
MLX5_CMD_OP_PAGE_FAULT_RESUME = 0x204,
+ MLX5_CMD_OP_ALLOC_MEMIC = 0x205,
+ MLX5_CMD_OP_DEALLOC_MEMIC = 0x206,
MLX5_CMD_OP_CREATE_EQ = 0x301,
MLX5_CMD_OP_DESTROY_EQ = 0x302,
MLX5_CMD_OP_QUERY_EQ = 0x303,
@@ -8886,4 +8888,57 @@ struct mlx5_ifc_destroy_vport_lag_in_bits {
u8 reserved_at_40[0x40];
};
+struct mlx5_ifc_alloc_memic_in_bits {
+ u8 opcode[0x10];
+ u8 reserved_at_10[0x10];
+
+ u8 reserved_at_20[0x10];
+ u8 op_mod[0x10];
+
+ u8 reserved_at_30[0x20];
+
+ u8 reserved_at_40[0x18];
+ u8 log_memic_addr_alignment[0x8];
+
+ u8 range_start_addr[0x40];
+
+ u8 range_size[0x20];
+
+ u8 memic_size[0x20];
+};
+
+struct mlx5_ifc_alloc_memic_out_bits {
+ u8 status[0x8];
+ u8 reserved_at_8[0x18];
+
+ u8 syndrome[0x20];
+
+ u8 memic_start_addr[0x40];
+};
+
+struct mlx5_ifc_dealloc_memic_in_bits {
+ u8 opcode[0x10];
+ u8 reserved_at_10[0x10];
+
+ u8 reserved_at_20[0x10];
+ u8 op_mod[0x10];
+
+ u8 reserved_at_40[0x40];
+
+ u8 memic_start_addr[0x40];
+
+ u8 memic_size[0x20];
+
+ u8 reserved_at_e0[0x20];
+};
+
+struct mlx5_ifc_dealloc_memic_out_bits {
+ u8 status[0x8];
+ u8 reserved_at_8[0x18];
+
+ u8 syndrome[0x20];
+
+ u8 reserved_at_40[0x40];
+};
+
#endif /* MLX5_IFC_H */