diff options
| author | Sean Hefty <sean.hefty@intel.com> | 2011-06-02 09:01:33 -0700 |
|---|---|---|
| committer | Roland Dreier <roland@purestorage.com> | 2011-10-13 09:43:03 -0700 |
| commit | 012a8ff577f95211c6ffd3b77a94c34ebae009b6 (patch) | |
| tree | 7d1e8d3ca131cc46ca12e879c4554870e0be76f2 /drivers/infiniband/hw/mlx4/main.c | |
| parent | 2622e18ef407a8e8e3ddc3d6f0c77b756c493798 (diff) | |
| download | blackbird-op-linux-012a8ff577f95211c6ffd3b77a94c34ebae009b6.tar.gz blackbird-op-linux-012a8ff577f95211c6ffd3b77a94c34ebae009b6.zip | |
IB/mlx4: Add support for XRC domains
Support creating and destroying XRC domains. Any sharing of the XRCD
is managed above the low-level driver.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4/main.c')
| -rw-r--r-- | drivers/infiniband/hw/mlx4/main.c | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c index fa643f4f4e28..23e45df9ae36 100644 --- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -566,6 +566,57 @@ static int mlx4_ib_dealloc_pd(struct ib_pd *pd) return 0; } +static struct ib_xrcd *mlx4_ib_alloc_xrcd(struct ib_device *ibdev, + struct ib_ucontext *context, + struct ib_udata *udata) +{ + struct mlx4_ib_xrcd *xrcd; + int err; + + if (!(to_mdev(ibdev)->dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC)) + return ERR_PTR(-ENOSYS); + + xrcd = kmalloc(sizeof *xrcd, GFP_KERNEL); + if (!xrcd) + return ERR_PTR(-ENOMEM); + + err = mlx4_xrcd_alloc(to_mdev(ibdev)->dev, &xrcd->xrcdn); + if (err) + goto err1; + + xrcd->pd = ib_alloc_pd(ibdev); + if (IS_ERR(xrcd->pd)) { + err = PTR_ERR(xrcd->pd); + goto err2; + } + + xrcd->cq = ib_create_cq(ibdev, NULL, NULL, xrcd, 1, 0); + if (IS_ERR(xrcd->cq)) { + err = PTR_ERR(xrcd->cq); + goto err3; + } + + return &xrcd->ibxrcd; + +err3: + ib_dealloc_pd(xrcd->pd); +err2: + mlx4_xrcd_free(to_mdev(ibdev)->dev, xrcd->xrcdn); +err1: + kfree(xrcd); + return ERR_PTR(err); +} + +static int mlx4_ib_dealloc_xrcd(struct ib_xrcd *xrcd) +{ + ib_destroy_cq(to_mxrcd(xrcd)->cq); + ib_dealloc_pd(to_mxrcd(xrcd)->pd); + mlx4_xrcd_free(to_mdev(xrcd->device)->dev, to_mxrcd(xrcd)->xrcdn); + kfree(xrcd); + + return 0; +} + static int add_gid_entry(struct ib_qp *ibqp, union ib_gid *gid) { struct mlx4_ib_qp *mqp = to_mqp(ibqp); @@ -1093,6 +1144,14 @@ static void *mlx4_ib_add(struct mlx4_dev *dev) ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr; ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc; + if (dev->caps.flags & MLX4_DEV_CAP_FLAG_XRC) { + ibdev->ib_dev.alloc_xrcd = mlx4_ib_alloc_xrcd; + ibdev->ib_dev.dealloc_xrcd = mlx4_ib_dealloc_xrcd; + ibdev->ib_dev.uverbs_cmd_mask |= + (1ull << IB_USER_VERBS_CMD_OPEN_XRCD) | + (1ull << IB_USER_VERBS_CMD_CLOSE_XRCD); + } + spin_lock_init(&iboe->lock); if (init_node_data(ibdev)) |
