i40iw: Enable level-1 PBL for fast memory registration

Set the chunk_size to enable level-1 PBL support when the fast memory
page count is more than one.

Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

2 files changed, 6 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/i40iw/i40iw.h b/drivers/infiniband/hw/i40iw/i40iw.h
index 14f16a2dcbed..b738acdb9b02 100644
--- a/drivers/infiniband/hw/i40iw/i40iw.h
+++ b/drivers/infiniband/hw/i40iw/i40iw.h
@@ -114,6 +114,7 @@
 #define IW_HMC_OBJ_TYPE_NUM ARRAY_SIZE(iw_hmc_obj_types)
 #define IW_CFG_FPM_QP_COUNT             32768
 #define I40IW_MAX_PAGES_PER_FMR         512
+#define I40IW_MIN_PAGES_PER_FMR         1
 
 #define I40IW_MTU_TO_MSS                40
 #define I40IW_DEFAULT_MSS               1460
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
index 31eda323fcbf..33959ed14563 100644
--- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c
+++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c
@@ -2150,6 +2150,7 @@ static int i40iw_post_send(struct ib_qp *ibqp,
                         struct i40iw_sc_dev *dev = &iwqp->iwdev->sc_dev;
                         struct i40iw_fast_reg_stag_info info;
 
+                        memset(&info, 0, sizeof(info));
                         info.access_rights = I40IW_ACCESS_FLAGS_LOCALREAD;
                         info.access_rights |= i40iw_get_user_access(flags);
                         info.stag_key = reg_wr(ib_wr)->key & 0xff;
@@ -2159,10 +2160,14 @@ static int i40iw_post_send(struct ib_qp *ibqp,
                         info.addr_type = I40IW_ADDR_TYPE_VA_BASED;
                         info.va = (void *)(uintptr_t)iwmr->ibmr.iova;
                         info.total_len = iwmr->ibmr.length;
+                        info.reg_addr_pa = *(u64 *)palloc->level1.addr;
                         info.first_pm_pbl_index = palloc->level1.idx;
                         info.local_fence = ib_wr->send_flags & IB_SEND_FENCE;
                         info.signaled = ib_wr->send_flags & IB_SEND_SIGNALED;
 
+                        if (iwmr->npages > I40IW_MIN_PAGES_PER_FMR)
+                                info.chunk_size = 1;
+
                         if (page_shift == 21)
                                 info.page_size = 1; /* 2M page */