Signed-off-by: Sagi Grimberg <sa...@mellanox.com>
---
 drivers/infiniband/hw/nes/nes_verbs.c | 73 +++++++++++++++++++++++++++++++++++
 1 file changed, 73 insertions(+)

diff --git a/drivers/infiniband/hw/nes/nes_verbs.c 
b/drivers/infiniband/hw/nes/nes_verbs.c
index fbc43e5..ac63763 100644
--- a/drivers/infiniband/hw/nes/nes_verbs.c
+++ b/drivers/infiniband/hw/nes/nes_verbs.c
@@ -375,6 +375,78 @@ static int alloc_fast_reg_mr(struct nes_device *nesdev, 
struct nes_pd *nespd,
 }
 
 /*
+ * nes_alloc_mr
+ */
+static struct ib_mr *nes_alloc_mr(struct ib_pd *ibpd,
+                                 enum ib_mr_type mr_type,
+                                 u32 max_entries,
+                                 u32 flags)
+{
+       struct nes_pd *nespd = to_nespd(ibpd);
+       struct nes_vnic *nesvnic = to_nesvnic(ibpd->device);
+       struct nes_device *nesdev = nesvnic->nesdev;
+       struct nes_adapter *nesadapter = nesdev->nesadapter;
+
+       u32 next_stag_index;
+       u8 stag_key = 0;
+       u32 driver_key = 0;
+       int err = 0;
+       u32 stag_index = 0;
+       struct nes_mr *nesmr;
+       u32 stag;
+       int ret;
+       struct ib_mr *ibmr;
+
+       if (mr_type != IB_MR_TYPE_FAST_REG || flags)
+               return ERR_PTR(-EINVAL);
+
+/*
+ * Note:  Set to always use a fixed length single page entry PBL.  This is to 
allow
+ *      for the fast_reg_mr operation to always know the size of the PBL.
+ */
+       if (max_entries > (NES_4K_PBL_CHUNK_SIZE / sizeof(u64)))
+               return ERR_PTR(-E2BIG);
+
+       get_random_bytes(&next_stag_index, sizeof(next_stag_index));
+       stag_key = (u8)next_stag_index;
+       next_stag_index >>= 8;
+       next_stag_index %= nesadapter->max_mr;
+
+       err = nes_alloc_resource(nesadapter, nesadapter->allocated_mrs,
+                                nesadapter->max_mr, &stag_index,
+                                &next_stag_index, NES_RESOURCE_FAST_MR);
+       if (err)
+               return ERR_PTR(err);
+
+       nesmr = kzalloc(sizeof(*nesmr), GFP_KERNEL);
+       if (!nesmr) {
+               nes_free_resource(nesadapter, nesadapter->allocated_mrs, 
stag_index);
+               return ERR_PTR(-ENOMEM);
+       }
+
+       stag = stag_index << 8;
+       stag |= driver_key;
+       stag += (u32)stag_key;
+
+       nes_debug(NES_DBG_MR, "Allocating STag 0x%08X index = 0x%08X\n",
+                 stag, stag_index);
+
+       ret = alloc_fast_reg_mr(nesdev, nespd, stag, max_entries);
+
+       if (ret == 0) {
+               nesmr->ibmr.rkey = stag;
+               nesmr->ibmr.lkey = stag;
+               nesmr->mode = IWNES_MEMREG_TYPE_FMEM;
+               ibmr = &nesmr->ibmr;
+       } else {
+               kfree(nesmr);
+               nes_free_resource(nesadapter, nesadapter->allocated_mrs, 
stag_index);
+               ibmr = ERR_PTR(-ENOMEM);
+       }
+       return ibmr;
+}
+
+/*
  * nes_alloc_fast_reg_mr
  */
 static struct ib_mr *nes_alloc_fast_reg_mr(struct ib_pd *ibpd, int 
max_page_list_len)
@@ -3929,6 +4001,7 @@ struct nes_ib_device *nes_init_ofa_device(struct 
net_device *netdev)
        nesibdev->ibdev.dealloc_mw = nes_dealloc_mw;
        nesibdev->ibdev.bind_mw = nes_bind_mw;
 
+       nesibdev->ibdev.alloc_mr = nes_alloc_mr;
        nesibdev->ibdev.alloc_fast_reg_mr = nes_alloc_fast_reg_mr;
        nesibdev->ibdev.alloc_fast_reg_page_list = nes_alloc_fast_reg_page_list;
        nesibdev->ibdev.free_fast_reg_page_list = nes_free_fast_reg_page_list;
-- 
1.8.4.3

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