1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */ 2 /* Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved. */ 3 4 #ifndef __PCI_IRQ_H__ 5 #define __PCI_IRQ_H__ 6 7 #include <linux/mlx5/driver.h> 8 9 #define MLX5_MAX_IRQ_NAME (32) 10 /* max irq_index is 2047, so four chars */ 11 #define MLX5_MAX_IRQ_IDX_CHARS (4) 12 #define MLX5_EQ_REFS_PER_IRQ (2) 13 14 struct mlx5_irq; 15 16 struct mlx5_irq_pool { 17 char name[MLX5_MAX_IRQ_NAME - MLX5_MAX_IRQ_IDX_CHARS]; 18 struct xa_limit xa_num_irqs; 19 struct mutex lock; /* sync IRQs creations */ 20 struct xarray irqs; 21 u32 max_threshold; 22 u32 min_threshold; 23 u16 *irqs_per_cpu; 24 struct mlx5_core_dev *dev; 25 }; 26 27 struct mlx5_irq_pool *mlx5_irq_pool_get(struct mlx5_core_dev *dev); 28 static inline bool mlx5_irq_pool_is_sf_pool(struct mlx5_irq_pool *pool) 29 { 30 return !strncmp("mlx5_sf", pool->name, strlen("mlx5_sf")); 31 } 32 33 struct mlx5_irq *mlx5_irq_alloc(struct mlx5_irq_pool *pool, int i, 34 const struct cpumask *affinity); 35 int mlx5_irq_get_locked(struct mlx5_irq *irq); 36 int mlx5_irq_read_locked(struct mlx5_irq *irq); 37 int mlx5_irq_put(struct mlx5_irq *irq); 38 39 #endif /* __PCI_IRQ_H__ */ 40