IB/mlx4: Fix up fast register page list format

Byte swap the addresses in the page list for fast register work requests
to big endian to match what the HCA expectx.  Also, the addresses must
have the "present" bit set so that the HCA knows it can access them.
Otherwise the HCA will fault the first time it accesses the memory
region.

Signed-off-by: Vladimir Sokolovsky <vlad@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

3 files changed, 10 insertions, 2 deletions

diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index f29dbb767e87..9559248f265b 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1342,6 +1342,12 @@ static __be32 convert_access(int acc)
 static void set_fmr_seg(struct mlx4_wqe_fmr_seg *fseg, struct ib_send_wr *wr)
 {
         struct mlx4_ib_fast_reg_page_list *mfrpl = to_mfrpl(wr->wr.fast_reg.page_list);
+        int i;
+
+        for (i = 0; i < wr->wr.fast_reg.page_list_len; ++i)
+                wr->wr.fast_reg.page_list->page_list[i] =
+                        cpu_to_be64(wr->wr.fast_reg.page_list->page_list[i] |
+                                    MLX4_MTT_FLAG_PRESENT);
 
         fseg->flags             = convert_access(wr->wr.fast_reg.access_flags);
         fseg->mem_key           = cpu_to_be32(wr->wr.fast_reg.rkey);
diff --git a/drivers/net/mlx4/mr.c b/drivers/net/mlx4/mr.c
index 644adf074a35..d1dd5b48dbd1 100644
--- a/drivers/net/mlx4/mr.c
+++ b/drivers/net/mlx4/mr.c
@@ -71,8 +71,6 @@ struct mlx4_mpt_entry {
 #define MLX4_MPT_PD_FLAG_RAE        (1 << 28)
 #define MLX4_MPT_PD_FLAG_EN_INV     (3 << 24)
 
-#define MLX4_MTT_FLAG_PRESENT           1
-
 #define MLX4_MPT_STATUS_SW              0xF0
 #define MLX4_MPT_STATUS_HW              0x00
 
diff --git a/include/linux/mlx4/device.h b/include/linux/mlx4/device.h
index 655ea0d1ee14..b2f944468313 100644
--- a/include/linux/mlx4/device.h
+++ b/include/linux/mlx4/device.h
@@ -141,6 +141,10 @@ enum {
         MLX4_STAT_RATE_OFFSET   = 5
 };
 
+enum {
+        MLX4_MTT_FLAG_PRESENT           = 1
+};
+
 static inline u64 mlx4_fw_ver(u64 major, u64 minor, u64 subminor)
 {
         return (major << 32) | (minor << 16) | subminor;