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path: root/drivers/net/ethernet/mellanox/mlx4/eq.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/eq.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/eq.c24
1 files changed, 21 insertions, 3 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/eq.c b/drivers/net/ethernet/mellanox/mlx4/eq.c
index 49290a405903..3d275fbaf0eb 100644
--- a/drivers/net/ethernet/mellanox/mlx4/eq.c
+++ b/drivers/net/ethernet/mellanox/mlx4/eq.c
@@ -450,7 +450,7 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct mlx4_eqe *eqe;
- int cqn;
+ int cqn = -1;
int eqes_found = 0;
int set_ci = 0;
int port;
@@ -758,6 +758,13 @@ static int mlx4_eq_int(struct mlx4_dev *dev, struct mlx4_eq *eq)
eq_set_ci(eq, 1);
+ /* cqn is 24bit wide but is initialized such that its higher bits
+ * are ones too. Thus, if we got any event, cqn's high bits should be off
+ * and we need to schedule the tasklet.
+ */
+ if (!(cqn & ~0xffffff))
+ tasklet_schedule(&eq->tasklet_ctx.task);
+
return eqes_found;
}
@@ -971,6 +978,12 @@ static int mlx4_create_eq(struct mlx4_dev *dev, int nent,
eq->cons_index = 0;
+ INIT_LIST_HEAD(&eq->tasklet_ctx.list);
+ INIT_LIST_HEAD(&eq->tasklet_ctx.process_list);
+ spin_lock_init(&eq->tasklet_ctx.lock);
+ tasklet_init(&eq->tasklet_ctx.task, mlx4_cq_tasklet_cb,
+ (unsigned long)&eq->tasklet_ctx);
+
return err;
err_out_free_mtt:
@@ -1027,6 +1040,7 @@ static void mlx4_free_eq(struct mlx4_dev *dev,
}
}
synchronize_irq(eq->irq);
+ tasklet_disable(&eq->tasklet_ctx.task);
mlx4_mtt_cleanup(dev, &eq->mtt);
for (i = 0; i < npages; ++i)
@@ -1123,8 +1137,12 @@ int mlx4_init_eq_table(struct mlx4_dev *dev)
goto err_out_free;
}
- err = mlx4_bitmap_init(&priv->eq_table.bitmap, dev->caps.num_eqs,
- dev->caps.num_eqs - 1, dev->caps.reserved_eqs, 0);
+ err = mlx4_bitmap_init(&priv->eq_table.bitmap,
+ roundup_pow_of_two(dev->caps.num_eqs),
+ dev->caps.num_eqs - 1,
+ dev->caps.reserved_eqs,
+ roundup_pow_of_two(dev->caps.num_eqs) -
+ dev->caps.num_eqs);
if (err)
goto err_out_free;