[net-next 8/8] net/mlx5e: Bring back bfreg uar map dedicated pointer

[Saeed Mahameed]

4K Uar series modified the mlx5e driver to use the new bfreg API,
and mistakenly removed the sq->uar_map iomem data path dedicated
pointer, which was meant to be read from xmit path for cache locality
utilization.

Fix that by returning that pointer to the SQ struct.

Fixes: 7309cb4ad71e ("IB/mlx5: Support 4k UAR for libmlx5")
Signed-off-by: Saeed Mahameed <sae...@mellanox.com>
Reviewed-by: Tariq Toukan <tar...@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h      | 5 +++--
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h 
b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index a1741d3833db..562cd8f193a8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -475,6 +475,7 @@ struct mlx5e_sq {
        /* read only */
        struct mlx5_wq_cyc         wq;
        u32                        dma_fifo_mask;
+       void __iomem              *uar_map;
        struct netdev_queue       *txq;
        u32                        sqn;
        u16                        bf_buf_size;
@@ -830,9 +831,9 @@ static inline void mlx5e_tx_notify_hw(struct mlx5e_sq *sq,
         */
        wmb();
        if (bf_sz)
-               __iowrite64_copy(sq->bfreg.map + ofst, ctrl, bf_sz);
+               __iowrite64_copy(sq->uar_map + ofst, ctrl, bf_sz);
        else
-               mlx5_write64((__be32 *)ctrl, sq->bfreg.map + ofst, NULL);
+               mlx5_write64((__be32 *)ctrl, sq->uar_map + ofst, NULL);
        /* flush the write-combining mapped buffer */
        wmb();
 
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c 
b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index e47ba0365f20..4146e8f4cae0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -1016,6 +1016,7 @@ static int mlx5e_create_sq(struct mlx5e_channel *c,
        if (err)
                return err;
 
+       sq->uar_map = sq->bfreg.map;
        param->wq.db_numa_node = cpu_to_node(c->cpu);
 
        err = mlx5_wq_cyc_create(mdev, &param->wq, sqc_wq, &sq->wq,
-- 
2.11.0