[PATCH] IB/mthca: map context for RDMA responder in mem-free mode

Fix RDMA in mem-free mode: we need to make sure that the RDMA context memory
is mapped for the HCA.

Signed-off-by: Roland Dreier <roland@topspin.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

diff --git a/drivers/infiniband/hw/mthca/mthca_dev.h b/drivers/infiniband/hw/mthca/mthca_dev.h
index 616a0de..d014b44 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_dev.h
+++ b/drivers/infiniband/hw/mthca/mthca_dev.h
@@ -222,6 +222,7 @@ struct mthca_qp_table {
        struct mthca_array      qp;
        struct mthca_icm_table *qp_table;
        struct mthca_icm_table *eqp_table;
+       struct mthca_icm_table *rdb_table;
 };
 
 struct mthca_av_table {

diff --git a/drivers/infiniband/hw/mthca/mthca_main.c b/drivers/infiniband/hw/mthca/mthca_main.c
index c9c9468..0143696 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_main.c
+++ b/drivers/infiniband/hw/mthca/mthca_main.c
@@ -430,14 +430,25 @@ static int __devinit mthca_init_icm(struct mthca_dev *mdev,
                goto err_unmap_qp;
        }
 
-       mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base,
+       mdev->qp_table.rdb_table = mthca_alloc_icm_table(mdev, init_hca->rdb_base,
+                                                        MTHCA_RDB_ENTRY_SIZE,
+                                                        mdev->limits.num_qps <<
+                                                        mdev->qp_table.rdb_shift,
+                                                        0, 0);
+       if (!mdev->qp_table.rdb_table) {
+               mthca_err(mdev, "Failed to map RDB context memory, aborting\n");
+               err = -ENOMEM;
+               goto err_unmap_eqp;
+       }
+
+       mdev->cq_table.table = mthca_alloc_icm_table(mdev, init_hca->cqc_base,
                                                     dev_lim->cqc_entry_sz,
                                                     mdev->limits.num_cqs,
                                                     mdev->limits.reserved_cqs, 0);
        if (!mdev->cq_table.table) {
                mthca_err(mdev, "Failed to map CQ context memory, aborting.\n");
                err = -ENOMEM;
-               goto err_unmap_eqp;
+               goto err_unmap_rdb;
        }
 
        /*
@@ -463,6 +474,9 @@ static int __devinit mthca_init_icm(struct mthca_dev *mdev,
 err_unmap_cq:
        mthca_free_icm_table(mdev, mdev->cq_table.table);
 
+err_unmap_rdb:
+       mthca_free_icm_table(mdev, mdev->qp_table.rdb_table);
+
 err_unmap_eqp:
        mthca_free_icm_table(mdev, mdev->qp_table.eqp_table);
 

diff --git a/drivers/infiniband/hw/mthca/mthca_qp.c b/drivers/infiniband/hw/mthca/mthca_qp.c
index 53af7aa..ca73bab 100644 (file)
--- a/drivers/infiniband/hw/mthca/mthca_qp.c
+++ b/drivers/infiniband/hw/mthca/mthca_qp.c
@@ -1029,11 +1029,16 @@ static int mthca_alloc_memfree(struct mthca_dev *dev,
                if (ret)
                        goto err_qpc;
 
+               ret = mthca_table_get(dev, dev->qp_table.rdb_table,
+                                     qp->qpn << dev->qp_table.rdb_shift);
+               if (ret)
+                       goto err_eqpc;
+
                qp->rq.db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_RQ,
                                                 qp->qpn, &qp->rq.db);
                if (qp->rq.db_index < 0) {
                        ret = -ENOMEM;
-                       goto err_eqpc;
+                       goto err_rdb;
                }
 
                qp->sq.db_index = mthca_alloc_db(dev, MTHCA_DB_TYPE_SQ,
@@ -1049,6 +1054,10 @@ static int mthca_alloc_memfree(struct mthca_dev *dev,
 err_rq_db:
        mthca_free_db(dev, MTHCA_DB_TYPE_RQ, qp->rq.db_index);
 
+err_rdb:
+       mthca_table_put(dev, dev->qp_table.rdb_table,
+                       qp->qpn << dev->qp_table.rdb_shift);
+
 err_eqpc:
        mthca_table_put(dev, dev->qp_table.eqp_table, qp->qpn);
 
@@ -1064,6 +1073,8 @@ static void mthca_free_memfree(struct mthca_dev *dev,
        if (mthca_is_memfree(dev)) {
                mthca_free_db(dev, MTHCA_DB_TYPE_SQ, qp->sq.db_index);
                mthca_free_db(dev, MTHCA_DB_TYPE_RQ, qp->rq.db_index);
+               mthca_table_put(dev, dev->qp_table.rdb_table,
+                               qp->qpn << dev->qp_table.rdb_shift);
                mthca_table_put(dev, dev->qp_table.eqp_table, qp->qpn);
                mthca_table_put(dev, dev->qp_table.qp_table, qp->qpn);
        }