From 8ca967ab67671f07ac7daef4f854559bc66799a3 Mon Sep 17 00:00:00 2001 From: Saeed Mahameed Date: Mon, 9 Jan 2017 21:57:49 +0200 Subject: [PATCH] net/mlx5e: Bring back bfreg uar map dedicated pointer 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 Reviewed-by: Tariq Toukan --- 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 8be4b12b5545..95ca03c0d9f5 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; @@ -831,9 +832,9 @@ 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 ed230757d9c5..3cce6281e075 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, ¶m->wq, sqc_wq, &sq->wq, -- 2.20.1