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authorJack Morgenstein <jackm@dev.mellanox.co.il>2007-08-01 12:29:05 +0300
committerRoland Dreier <rolandd@cisco.com>2007-10-09 19:59:16 -0700
commit8ad11fb6b0739e704953e2b0aed453bf7d75d4f6 (patch)
tree671838bc9293987efba214f2d645d7e40befc5a8 /drivers/infiniband/hw/mlx4
parentd7bb58fb1c0e7264a7261c7d0304121ef9402e94 (diff)
IB/mlx4: Implement FMRs
Implement FMRs for mlx4. This is an adaptation of code from mthca. Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il> Signed-off-by: Michael S. Tsirkin <mst@dev.mellanox.co.il> Signed-off-by: Roland Dreier <rolandd@cisco.com>
Diffstat (limited to 'drivers/infiniband/hw/mlx4')
-rw-r--r--drivers/infiniband/hw/mlx4/main.c5
-rw-r--r--drivers/infiniband/hw/mlx4/mlx4_ib.h16
-rw-r--r--drivers/infiniband/hw/mlx4/mr.c93
3 files changed, 114 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index d9fc822a146..d8287d9db41 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -607,6 +607,11 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_dev.detach_mcast = mlx4_ib_mcg_detach;
ibdev->ib_dev.process_mad = mlx4_ib_process_mad;
+ ibdev->ib_dev.alloc_fmr = mlx4_ib_fmr_alloc;
+ ibdev->ib_dev.map_phys_fmr = mlx4_ib_map_phys_fmr;
+ ibdev->ib_dev.unmap_fmr = mlx4_ib_unmap_fmr;
+ ibdev->ib_dev.dealloc_fmr = mlx4_ib_fmr_dealloc;
+
if (init_node_data(ibdev))
goto err_map;
diff --git a/drivers/infiniband/hw/mlx4/mlx4_ib.h b/drivers/infiniband/hw/mlx4/mlx4_ib.h
index 705ff2fa237..28697653a37 100644
--- a/drivers/infiniband/hw/mlx4/mlx4_ib.h
+++ b/drivers/infiniband/hw/mlx4/mlx4_ib.h
@@ -93,6 +93,11 @@ struct mlx4_ib_mr {
struct ib_umem *umem;
};
+struct mlx4_ib_fmr {
+ struct ib_fmr ibfmr;
+ struct mlx4_fmr mfmr;
+};
+
struct mlx4_ib_wq {
u64 *wrid;
spinlock_t lock;
@@ -199,6 +204,10 @@ static inline struct mlx4_ib_mr *to_mmr(struct ib_mr *ibmr)
return container_of(ibmr, struct mlx4_ib_mr, ibmr);
}
+static inline struct mlx4_ib_fmr *to_mfmr(struct ib_fmr *ibfmr)
+{
+ return container_of(ibfmr, struct mlx4_ib_fmr, ibfmr);
+}
static inline struct mlx4_ib_qp *to_mqp(struct ib_qp *ibqp)
{
return container_of(ibqp, struct mlx4_ib_qp, ibqp);
@@ -284,6 +293,13 @@ int mlx4_ib_process_mad(struct ib_device *ibdev, int mad_flags, u8 port_num,
int mlx4_ib_mad_init(struct mlx4_ib_dev *dev);
void mlx4_ib_mad_cleanup(struct mlx4_ib_dev *dev);
+struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int mr_access_flags,
+ struct ib_fmr_attr *fmr_attr);
+int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list, int npages,
+ u64 iova);
+int mlx4_ib_unmap_fmr(struct list_head *fmr_list);
+int mlx4_ib_fmr_dealloc(struct ib_fmr *fmr);
+
static inline int mlx4_ib_ah_grh_present(struct mlx4_ib_ah *ah)
{
return !!(ah->av.g_slid & 0x80);
diff --git a/drivers/infiniband/hw/mlx4/mr.c b/drivers/infiniband/hw/mlx4/mr.c
index 734ec2bd15c..7dc91a3e712 100644
--- a/drivers/infiniband/hw/mlx4/mr.c
+++ b/drivers/infiniband/hw/mlx4/mr.c
@@ -181,3 +181,96 @@ int mlx4_ib_dereg_mr(struct ib_mr *ibmr)
return 0;
}
+
+struct ib_fmr *mlx4_ib_fmr_alloc(struct ib_pd *pd, int acc,
+ struct ib_fmr_attr *fmr_attr)
+{
+ struct mlx4_ib_dev *dev = to_mdev(pd->device);
+ struct mlx4_ib_fmr *fmr;
+ int err = -ENOMEM;
+
+ fmr = kmalloc(sizeof *fmr, GFP_KERNEL);
+ if (!fmr)
+ return ERR_PTR(-ENOMEM);
+
+ err = mlx4_fmr_alloc(dev->dev, to_mpd(pd)->pdn, convert_access(acc),
+ fmr_attr->max_pages, fmr_attr->max_maps,
+ fmr_attr->page_shift, &fmr->mfmr);
+ if (err)
+ goto err_free;
+
+ err = mlx4_mr_enable(to_mdev(pd->device)->dev, &fmr->mfmr.mr);
+ if (err)
+ goto err_mr;
+
+ fmr->ibfmr.rkey = fmr->ibfmr.lkey = fmr->mfmr.mr.key;
+
+ return &fmr->ibfmr;
+
+err_mr:
+ mlx4_mr_free(to_mdev(pd->device)->dev, &fmr->mfmr.mr);
+
+err_free:
+ kfree(fmr);
+
+ return ERR_PTR(err);
+}
+
+int mlx4_ib_map_phys_fmr(struct ib_fmr *ibfmr, u64 *page_list,
+ int npages, u64 iova)
+{
+ struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
+ struct mlx4_ib_dev *dev = to_mdev(ifmr->ibfmr.device);
+
+ return mlx4_map_phys_fmr(dev->dev, &ifmr->mfmr, page_list, npages, iova,
+ &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
+}
+
+int mlx4_ib_unmap_fmr(struct list_head *fmr_list)
+{
+ struct ib_fmr *ibfmr;
+ int err;
+ struct mlx4_dev *mdev = NULL;
+
+ list_for_each_entry(ibfmr, fmr_list, list) {
+ if (mdev && to_mdev(ibfmr->device)->dev != mdev)
+ return -EINVAL;
+ mdev = to_mdev(ibfmr->device)->dev;
+ }
+
+ if (!mdev)
+ return 0;
+
+ list_for_each_entry(ibfmr, fmr_list, list) {
+ struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
+
+ mlx4_fmr_unmap(mdev, &ifmr->mfmr, &ifmr->ibfmr.lkey, &ifmr->ibfmr.rkey);
+ }
+
+ /*
+ * Make sure all MPT status updates are visible before issuing
+ * SYNC_TPT firmware command.
+ */
+ wmb();
+
+ err = mlx4_SYNC_TPT(mdev);
+ if (err)
+ printk(KERN_WARNING "mlx4_ib: SYNC_TPT error %d when "
+ "unmapping FMRs\n", err);
+
+ return 0;
+}
+
+int mlx4_ib_fmr_dealloc(struct ib_fmr *ibfmr)
+{
+ struct mlx4_ib_fmr *ifmr = to_mfmr(ibfmr);
+ struct mlx4_ib_dev *dev = to_mdev(ibfmr->device);
+ int err;
+
+ err = mlx4_fmr_free(dev->dev, &ifmr->mfmr);
+
+ if (!err)
+ kfree(ifmr);
+
+ return err;
+}