net/mlx5: EQ, Privatize eq_table and friends

Move unnecessary EQ table structures and declaration from the
public include/linux/mlx5/driver.h into the private area of mlx5_core
and into eq.c/eq.h.

Introduce new mlx5 EQ APIs:

mlx5_comp_vectors_count(dev);
mlx5_comp_irq_get_affinity_mask(dev, vector);

And use them from mlx5_ib or mlx5e netdevice instead of direct access to
mlx5_core internal structures.

Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>

1 files changed, 77 insertions, 0 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h b/drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h
new file mode 100644
index 000000000000..48ee37797b3f
--- /dev/null
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lib/eq.h
@@ -0,0 +1,77 @@
+/* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
+/* Copyright (c) 2018 Mellanox Technologies */
+
+#ifndef __LIB_MLX5_EQ_H__
+#define __LIB_MLX5_EQ_H__
+#include <linux/mlx5/driver.h>
+
+#define MLX5_MAX_IRQ_NAME       (32)
+
+enum {
+	MLX5_EQ_VEC_PAGES	 = 0,
+	MLX5_EQ_VEC_CMD		 = 1,
+	MLX5_EQ_VEC_ASYNC	 = 2,
+	MLX5_EQ_VEC_PFAULT	 = 3,
+	MLX5_EQ_VEC_COMP_BASE,
+};
+
+struct mlx5_eq_tasklet {
+	struct list_head      list;
+	struct list_head      process_list;
+	struct tasklet_struct task;
+	spinlock_t            lock; /* lock completion tasklet list */
+};
+
+struct mlx5_eq_pagefault {
+	struct work_struct       work;
+	spinlock_t               lock; /* Pagefaults spinlock */
+	struct workqueue_struct  *wq;
+	mempool_t                *pool;
+};
+
+struct mlx5_cq_table {
+	spinlock_t              lock;	/* protect radix tree */
+	struct radix_tree_root  tree;
+};
+
+struct mlx5_eq {
+	struct mlx5_core_dev    *dev;
+	struct mlx5_cq_table    cq_table;
+	__be32 __iomem	        *doorbell;
+	u32                     cons_index;
+	struct mlx5_frag_buf    buf;
+	int                     size;
+	unsigned int            irqn;
+	u8                      eqn;
+	int                     nent;
+	struct list_head        list;
+	struct mlx5_rsc_debug   *dbg;
+	enum mlx5_eq_type       type;
+	union {
+		struct mlx5_eq_tasklet   tasklet_ctx;
+#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
+		struct mlx5_eq_pagefault pf_ctx;
+#endif
+	};
+};
+
+int mlx5_eq_table_init(struct mlx5_core_dev *dev);
+void mlx5_eq_table_cleanup(struct mlx5_core_dev *dev);
+int mlx5_eq_table_create(struct mlx5_core_dev *dev);
+void mlx5_eq_table_destroy(struct mlx5_core_dev *dev);
+int mlx5_eq_add_cq(struct mlx5_eq *eq, struct mlx5_core_cq *cq);
+int mlx5_eq_del_cq(struct mlx5_eq *eq, struct mlx5_core_cq *cq);
+struct mlx5_eq *mlx5_eqn2eq(struct mlx5_core_dev *dev, int eqn);
+struct mlx5_eq *mlx5_get_async_eq(struct mlx5_core_dev *dev);
+u32 mlx5_eq_poll_irq_disabled(struct mlx5_eq *eq);
+void mlx5_cq_tasklet_cb(unsigned long data);
+struct cpumask *mlx5_eq_comp_cpumask(struct mlx5_core_dev *dev, int ix);
+
+/* This function should only be called after mlx5_cmd_force_teardown_hca */
+void mlx5_core_eq_free_irqs(struct mlx5_core_dev *dev);
+
+#ifdef CONFIG_RFS_ACCEL
+struct cpu_rmap *mlx5_eq_table_get_rmap(struct mlx5_core_dev *dev);
+#endif
+
+#endif