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IB/mlx5: Implements disassociate_ucontext API

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Implements the IB core disassociate_ucontext API.
The driver detaches the HW resources for a given user context to
prevent a dependency between application termination and device
disconnect. This is done by managing the VMAs that were mapped
to the HW bars such as doorbell and blueflame. When need to detach,
remap them to an arbitrary kernel page returned by the zap API.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Maor Gottlieb
2016-06-17 14:56:44 +03:00
committed by Doug Ledford
parent 28d6137008
commit 7c2344c3bb
2 changed files with 135 additions and 4 deletions
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6
drivers/infiniband/hw/mlx5/mlx5_ib.h
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@@ -105,6 +105,11 @@ enum {
MLX5_CQE_VERSION_V1,
};
struct mlx5_ib_vma_private_data {
struct list_head list;
struct vm_area_struct *vma;
};
struct mlx5_ib_ucontext {
struct ib_ucontext ibucontext;
struct list_head db_page_list;
@@ -116,6 +121,7 @@ struct mlx5_ib_ucontext {
u8 cqe_version;
/* Transport Domain number */
u32 tdn;
struct list_head vma_private_list;
};
static inline struct mlx5_ib_ucontext *to_mucontext(struct ib_ucontext *ibucontext)