From: Maor Gottlieb <maorg@xxxxxxxxxx>
Add two functions to allocate and deallocate MEMIC operations
by using the MODIFY_MEMIC command.
Signed-off-by: Maor Gottlieb <maorg@xxxxxxxxxx>
Signed-off-by: Leon Romanovsky <leonro@xxxxxxxxxx>
---
drivers/infiniband/hw/mlx5/dm.c | 38 +++++++++++++++++++++++++++++++++
drivers/infiniband/hw/mlx5/dm.h | 2 ++
2 files changed, 40 insertions(+)
diff --git a/drivers/infiniband/hw/mlx5/dm.c b/drivers/infiniband/hw/mlx5/dm.c
index 3d39d93625ad..97a925d43312 100644
--- a/drivers/infiniband/hw/mlx5/dm.c
+++ b/drivers/infiniband/hw/mlx5/dm.c
@@ -111,6 +111,44 @@ void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr,
spin_unlock(&dm->lock);
}
+void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr,
+ u8 operation)
+{
+ u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {};
+ struct mlx5_core_dev *dev = dm->dev;
+
+ MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC);
+ MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_DEALLOC);
+ MLX5_SET(modify_memic_in, in, memic_operation_type,
+ MLX5_MODIFY_MEMIC_OP_MOD_ALLOC);
+ MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr);
+
+ mlx5_cmd_exec_in(dev, modify_memic, in);
+}
+
+static int mlx5_cmd_alloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr,
+ u8 operation, phys_addr_t *op_addr)
+{
+ u32 out[MLX5_ST_SZ_DW(modify_memic_out)] = {};
+ u32 in[MLX5_ST_SZ_DW(modify_memic_in)] = {};
+ struct mlx5_core_dev *dev = dm->dev;
+ int err;
+
+ MLX5_SET(modify_memic_in, in, opcode, MLX5_CMD_OP_MODIFY_MEMIC);
+ MLX5_SET(modify_memic_in, in, op_mod, MLX5_MODIFY_MEMIC_OP_MOD_ALLOC);
+ MLX5_SET(modify_memic_in, in, memic_operation_type,
+ MLX5_MODIFY_MEMIC_OP_MOD_ALLOC);
+ MLX5_SET64(modify_memic_in, in, memic_start_addr, addr - dev->bar_addr);
+
+ err = mlx5_cmd_exec_inout(dev, modify_memic, in, out);
+ if (err)
+ return err;
+
+ *op_addr = dev->bar_addr +
+ MLX5_GET64(modify_memic_out, out, memic_operation_addr);
+ return 0;
+}
+
static int add_dm_mmap_entry(struct ib_ucontext *context,
struct mlx5_ib_dm *mdm, u64 address)
{
diff --git a/drivers/infiniband/hw/mlx5/dm.h b/drivers/infiniband/hw/mlx5/dm.h
index dbef67e38731..adb39d3d8131 100644
--- a/drivers/infiniband/hw/mlx5/dm.h
+++ b/drivers/infiniband/hw/mlx5/dm.h
@@ -10,5 +10,7 @@
void mlx5_cmd_dealloc_memic(struct mlx5_dm *dm, phys_addr_t addr,
u64 length);
+void mlx5_cmd_dealloc_memic_op(struct mlx5_dm *dm, phys_addr_t addr,
+ u8 operation);
#endif /* _MLX5_IB_DM_H */
--
2.30.2
