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path: root/drivers/infiniband/hw/mlx4/mr.c
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Diffstat (limited to 'drivers/infiniband/hw/mlx4/mr.c')
-rw-r--r--drivers/infiniband/hw/mlx4/mr.c87
1 files changed, 82 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index bbaf6176f20..e471f089ff0 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -41,9 +41,19 @@ static u32 convert_access(int acc)
(acc & IB_ACCESS_REMOTE_WRITE ? MLX4_PERM_REMOTE_WRITE : 0) |
(acc & IB_ACCESS_REMOTE_READ ? MLX4_PERM_REMOTE_READ : 0) |
(acc & IB_ACCESS_LOCAL_WRITE ? MLX4_PERM_LOCAL_WRITE : 0) |
+ (acc & IB_ACCESS_MW_BIND ? MLX4_PERM_BIND_MW : 0) |
MLX4_PERM_LOCAL_READ;
}
+static enum mlx4_mw_type to_mlx4_type(enum ib_mw_type type)
+{
+ switch (type) {
+ case IB_MW_TYPE_1: return MLX4_MW_TYPE_1;
+ case IB_MW_TYPE_2: return MLX4_MW_TYPE_2;
+ default: return -1;
+ }
+}
+
struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc)
{
struct mlx4_ib_mr *mr;
@@ -68,7 +78,7 @@ struct ib_mr *mlx4_ib_get_dma_mr(struct ib_pd *pd, int acc)
return &mr->ibmr;
err_mr:
- mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
+ (void) mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
err_free:
kfree(mr);
@@ -163,7 +173,7 @@ struct ib_mr *mlx4_ib_reg_user_mr(struct ib_pd *pd, u64 start, u64 length,
return &mr->ibmr;
err_mr:
- mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
+ (void) mlx4_mr_free(to_mdev(pd->device)->dev, &mr->mmr);
err_umem:
ib_umem_release(mr->umem);
@@ -177,8 +187,11 @@ err_free:
int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
{
struct mlx4_ib_mr *mr = to_mmr(ibmr);
+ int ret;
- mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr);
+ ret = mlx4_mr_free(to_mdev(ibmr->device)->dev, &mr->mmr);
+ if (ret)
+ return ret;
if (mr->umem)
ib_umem_release(mr->umem);
kfree(mr);
@@ -186,6 +199,70 @@ int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
return 0;
}
+struct ib_mw *mlx4_ib_alloc_mw(struct ib_pd *pd, enum ib_mw_type type)
+{
+ struct mlx4_ib_dev *dev = to_mdev(pd->device);
+ struct mlx4_ib_mw *mw;
+ int err;
+
+ mw = kmalloc(sizeof(*mw), GFP_KERNEL);
+ if (!mw)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx4_mw_alloc(dev->dev, to_mpd(pd)->pdn,
+ to_mlx4_type(type), &mw->mmw);
+ if (err)
+ goto err_free;
+
+ err = mlx4_mw_enable(dev->dev, &mw->mmw);
+ if (err)
+ goto err_mw;
+
+ mw->ibmw.rkey = mw->mmw.key;
+
+ return &mw->ibmw;
+
+err_mw:
+ mlx4_mw_free(dev->dev, &mw->mmw);
+
+err_free:
+ kfree(mw);
+
+ return ERR_PTR(err);
+}
+
+int mlx4_ib_bind_mw(struct ib_qp *qp, struct ib_mw *mw,
+ struct ib_mw_bind *mw_bind)
+{
+ struct ib_send_wr wr;
+ struct ib_send_wr *bad_wr;
+ int ret;
+
+ memset(&wr, 0, sizeof(wr));
+ wr.opcode = IB_WR_BIND_MW;
+ wr.wr_id = mw_bind->wr_id;
+ wr.send_flags = mw_bind->send_flags;
+ wr.wr.bind_mw.mw = mw;
+ wr.wr.bind_mw.bind_info = mw_bind->bind_info;
+ wr.wr.bind_mw.rkey = ib_inc_rkey(mw->rkey);
+
+ ret = mlx4_ib_post_send(qp, &wr, &bad_wr);
+ if (!ret)
+ mw->rkey = wr.wr.bind_mw.rkey;
+
+ return ret;
+}
+
+int mlx4_ib_dealloc_mw(struct ib_mw *ibmw)
+{
+ struct mlx4_ib_mw *mw = to_mmw(ibmw);
+
+ mlx4_mw_free(to_mdev(ibmw->device)->dev, &mw->mmw);
+ kfree(mw);
+
+ return 0;
+}
+
struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
int max_page_list_len)
{
@@ -212,7 +289,7 @@ struct ib_mr *mlx4_ib_alloc_fast_reg_mr(struct ib_pd *pd,
return &mr->ibmr;
err_mr:
- mlx4_mr_free(dev->dev, &mr->mmr);
+ (void) mlx4_mr_free(dev->dev, &mr->mmr);
err_free:
kfree(mr);
@@ -291,7 +368,7 @@ struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc,
return &fmr->ibfmr;
err_mr:
- mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr);
+ (void) mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr);
err_free:
kfree(fmr);