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From: Saeed Mahameed <saeedm@mellanox.com>
To: "David S. Miller" <davem@davemloft.net>
Cc: netdev@vger.kernel.org, kernel-team@fb.com,
	Saeed Mahameed <saeedm@mellanox.com>
Subject: [PATCH net-next 03/12] net/mlx5e: Single bfreg (UAR) for all mlx5e SQs and netdevs
Date: Sat, 25 Mar 2017 00:52:05 +0300	[thread overview]
Message-ID: <20170324215214.25711-4-saeedm@mellanox.com> (raw)
In-Reply-To: <20170324215214.25711-1-saeedm@mellanox.com>

One is sufficient since Blue Flame is not supported anymore.
This will also come in handy for switchdev mode to save resources, since
VF representors will use same single UAR as well for their own SQs.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en.h        |  1 -
 drivers/net/ethernet/mellanox/mlx5/core/en_common.c |  9 +++++++++
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c   | 17 +++--------------
 include/linux/mlx5/driver.h                         |  1 +
 4 files changed, 13 insertions(+), 15 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index 85261e9ccf4a..22e4bad03f05 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -483,7 +483,6 @@ struct mlx5e_sq {
 
 	/* control path */
 	struct mlx5_wq_ctrl        wq_ctrl;
-	struct mlx5_sq_bfreg	   bfreg;
 	struct mlx5e_channel      *channel;
 	int                        tc;
 	u32                        rate_limit;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
index bd898d8deda0..20bdbe685795 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_common.c
@@ -107,10 +107,18 @@ int mlx5e_create_mdev_resources(struct mlx5_core_dev *mdev)
 		goto err_dealloc_transport_domain;
 	}
 
+	err = mlx5_alloc_bfreg(mdev, &res->bfreg, false, false);
+	if (err) {
+		mlx5_core_err(mdev, "alloc bfreg failed, %d\n", err);
+		goto err_destroy_mkey;
+	}
+
 	INIT_LIST_HEAD(&mdev->mlx5e_res.td.tirs_list);
 
 	return 0;
 
+err_destroy_mkey:
+	mlx5_core_destroy_mkey(mdev, &res->mkey);
 err_dealloc_transport_domain:
 	mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
 err_dealloc_pd:
@@ -122,6 +130,7 @@ void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev)
 {
 	struct mlx5e_resources *res = &mdev->mlx5e_res;
 
+	mlx5_free_bfreg(mdev, &res->bfreg);
 	mlx5_core_destroy_mkey(mdev, &res->mkey);
 	mlx5_core_dealloc_transport_domain(mdev, res->td.tdn);
 	mlx5_core_dealloc_pd(mdev, res->pdn);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index f9bcbd277adb..49c1769d13b9 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -1016,18 +1016,14 @@ static int mlx5e_create_sq(struct mlx5e_channel *c,
 	sq->mkey_be   = c->mkey_be;
 	sq->channel   = c;
 	sq->tc        = tc;
+	sq->uar_map   = mdev->mlx5e_res.bfreg.map;
 
-	err = mlx5_alloc_bfreg(mdev, &sq->bfreg, false, false);
-	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,
 				 &sq->wq_ctrl);
 	if (err)
-		goto err_unmap_free_uar;
+		return err;
 
 	sq->wq.db       = &sq->wq.db[MLX5_SND_DBR];
 
@@ -1053,20 +1049,13 @@ static int mlx5e_create_sq(struct mlx5e_channel *c,
 err_sq_wq_destroy:
 	mlx5_wq_destroy(&sq->wq_ctrl);
 
-err_unmap_free_uar:
-	mlx5_free_bfreg(mdev, &sq->bfreg);
-
 	return err;
 }
 
 static void mlx5e_destroy_sq(struct mlx5e_sq *sq)
 {
-	struct mlx5e_channel *c = sq->channel;
-	struct mlx5e_priv *priv = c->priv;
-
 	mlx5e_free_sq_db(sq);
 	mlx5_wq_destroy(&sq->wq_ctrl);
-	mlx5_free_bfreg(priv->mdev, &sq->bfreg);
 }
 
 static int mlx5e_enable_sq(struct mlx5e_sq *sq, struct mlx5e_sq_param *param)
@@ -1103,7 +1092,7 @@ static int mlx5e_enable_sq(struct mlx5e_sq *sq, struct mlx5e_sq_param *param)
 	MLX5_SET(sqc,  sqc, tis_lst_sz, param->type == MLX5E_SQ_ICO ? 0 : 1);
 
 	MLX5_SET(wq,   wq, wq_type,       MLX5_WQ_TYPE_CYCLIC);
-	MLX5_SET(wq,   wq, uar_page,      sq->bfreg.index);
+	MLX5_SET(wq,   wq, uar_page,      mdev->mlx5e_res.bfreg.index);
 	MLX5_SET(wq,   wq, log_wq_pg_sz,  sq->wq_ctrl.buf.page_shift -
 					  MLX5_ADAPTER_PAGE_SHIFT);
 	MLX5_SET64(wq, wq, dbr_addr,      sq->wq_ctrl.db.dma);
diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h
index 2fcff6b4503f..f50864626230 100644
--- a/include/linux/mlx5/driver.h
+++ b/include/linux/mlx5/driver.h
@@ -728,6 +728,7 @@ struct mlx5e_resources {
 	u32                        pdn;
 	struct mlx5_td             td;
 	struct mlx5_core_mkey      mkey;
+	struct mlx5_sq_bfreg       bfreg;
 };
 
 struct mlx5_core_dev {
-- 
2.11.0

  parent reply	other threads:[~2017-03-24 21:52 UTC|newest]

Thread overview: 18+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-03-24 21:52 [PATCH net-next 00/12] Mellanox mlx5e XDP performance optimization Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 01/12] net/mlx5e: Use dma_rmb rather than rmb in CQE fetch routine Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 02/12] net/mlx5e: Xmit, no write combining Saeed Mahameed
2017-03-24 21:52 ` Saeed Mahameed [this message]
2017-03-24 21:52 ` [PATCH net-next 04/12] net/mlx5e: Move XDP completion functions to rx file Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 05/12] net/mlx5e: Move mlx5e_rq struct declaration Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 06/12] net/mlx5e: Move XDP SQ instance into RQ Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 07/12] net/mlx5e: Poll XDP TX CQ before RX CQ Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 08/12] net/mlx5e: Optimize XDP frame xmit Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 09/12] net/mlx5e: Generalize tx helper functions for different SQ types Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 10/12] net/mlx5e: Proper names for SQ/RQ/CQ functions Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 11/12] net/mlx5e: Generalize SQ create/modify/destroy functions Saeed Mahameed
2017-03-24 21:52 ` [PATCH net-next 12/12] net/mlx5e: Different SQ types Saeed Mahameed
2017-03-24 23:26 ` [PATCH net-next 00/12] Mellanox mlx5e XDP performance optimization Alexei Starovoitov
2017-03-25 12:30   ` Saeed Mahameed
2017-03-25  2:12 ` David Miller
2017-03-25 16:54 ` Tom Herbert
2017-03-26  9:16   ` Saeed Mahameed

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