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RDMA/mlx5: Add support to MODIFY_MEMIC command

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Add two functions to allocate and deallocate MEMIC operations
by using the MODIFY_MEMIC command.

Link: https://lore.kernel.org/r/20210411122924.60230-6-leon@kernel.org
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Maor Gottlieb 2021-04-11 15:29:22 +03:00 committed by Jason Gunthorpe
parent 251b9d7887
commit 39cc792ff2
2 changed files with 38 additions and 0 deletions
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36
drivers/infiniband/hw/mlx5/dm.c
View file

@ -111,6 +111,42 @@ 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, operation);
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, operation);
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_memic *mdm, u64 address)
{

2
drivers/infiniband/hw/mlx5/dm.h
View file

@ -49,5 +49,7 @@ struct ib_dm *mlx5_ib_alloc_dm(struct ib_device *ibdev,
struct uverbs_attr_bundle *attrs);
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 */