1 /*-
14  *      - Redistributions of source code must retain the above
18  *      - Redistributions in binary form must reproduce the above
42 	ida_init(&dev->roce.reserved_gids.ida);  in mlx5_init_reserved_gids()
43 	dev->roce.reserved_gids.start = tblsz;  in mlx5_init_reserved_gids()
44 	dev->roce.reserved_gids.count = 0;  in mlx5_init_reserved_gids()
49 	WARN_ON(!ida_is_empty(&dev->roce.reserved_gids.ida));  in mlx5_cleanup_reserved_gids()
50 	dev->roce.reserved_gids.start = 0;  in mlx5_cleanup_reserved_gids()
51 	dev->roce.reserved_gids.count = 0;  in mlx5_cleanup_reserved_gids()
52 	ida_destroy(&dev->roce.reserved_gids.ida);  in mlx5_cleanup_reserved_gids()
55 int mlx5_core_reserve_gids(struct mlx5_core_dev *dev, unsigned int count)  in mlx5_core_reserve_gids()  argument
57 	if (test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state)) {  in mlx5_core_reserve_gids()
58 		mlx5_core_err(dev, "Cannot reserve GIDs when interfaces are up\n");  in mlx5_core_reserve_gids()
59 		return -EPERM;  in mlx5_core_reserve_gids()
61 	if (dev->roce.reserved_gids.start < count) {  in mlx5_core_reserve_gids()
63 			       count);  in mlx5_core_reserve_gids()
64 		return -ENOMEM;  in mlx5_core_reserve_gids()
66 	if (dev->roce.reserved_gids.count + count > MLX5_MAX_RESERVED_GIDS) {  in mlx5_core_reserve_gids()
67 		mlx5_core_warn(dev, "Unable to reserve %d more GIDs\n", count);  in mlx5_core_reserve_gids()
68 		return -ENOMEM;  in mlx5_core_reserve_gids()
71 	dev->roce.reserved_gids.start -= count;  in mlx5_core_reserve_gids()
72 	dev->roce.reserved_gids.count += count;  in mlx5_core_reserve_gids()
74 		      dev->roce.reserved_gids.count,  in mlx5_core_reserve_gids()
75 		      dev->roce.reserved_gids.start);  in mlx5_core_reserve_gids()
79 void mlx5_core_unreserve_gids(struct mlx5_core_dev *dev, unsigned int count)  in mlx5_core_unreserve_gids()  argument
81 …WARN(test_bit(MLX5_INTERFACE_STATE_UP, &dev->intf_state), "Unreserving GIDs when interfaces are up…  in mlx5_core_unreserve_gids()
82 	WARN(count > dev->roce.reserved_gids.count, "Unreserving %u GIDs when only %u reserved",  in mlx5_core_unreserve_gids()
83 	     count, dev->roce.reserved_gids.count);  in mlx5_core_unreserve_gids()
85 	dev->roce.reserved_gids.start += count;  in mlx5_core_unreserve_gids()
86 	dev->roce.reserved_gids.count -= count;  in mlx5_core_unreserve_gids()
88 		      dev->roce.reserved_gids.count,  in mlx5_core_unreserve_gids()
89 		      dev->roce.reserved_gids.start);  in mlx5_core_unreserve_gids()
94 	int end = dev->roce.reserved_gids.start +  in mlx5_core_reserved_gid_alloc()
95 		  dev->roce.reserved_gids.count;  in mlx5_core_reserved_gid_alloc()
98 	index = ida_simple_get(&dev->roce.reserved_gids.ida,  in mlx5_core_reserved_gid_alloc()
99 			       dev->roce.reserved_gids.start, end,  in mlx5_core_reserved_gid_alloc()
112 	ida_simple_remove(&dev->roce.reserved_gids.ida, gid_index);  in mlx5_core_reserved_gid_free()
117 	return dev->roce.reserved_gids.count;  in mlx5_core_reserved_gids_count()
136 		return -EINVAL;  in mlx5_core_roce_gid_set()