1 /*- 2 * Copyright (c) 2017 Mellanox Technologies. All rights reserved. 3 * 4 * This software is available to you under a choice of one of two 5 * licenses. You may choose to be licensed under the terms of the GNU 6 * General Public License (GPL) Version 2, available from the file 7 * COPYING in the main directory of this source tree, or the 8 * OpenIB.org BSD license below: 9 * 10 * Redistribution and use in source and binary forms, with or 11 * without modification, are permitted provided that the following 12 * conditions are met: 13 * 14 * - Redistributions of source code must retain the above 15 * copyright notice, this list of conditions and the following 16 * disclaimer. 17 * 18 * - Redistributions in binary form must reproduce the above 19 * copyright notice, this list of conditions and the following 20 * disclaimer in the documentation and/or other materials 21 * provided with the distribution. 22 * 23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 30 * SOFTWARE. 31 */ 32 33 #include <linux/module.h> 34 #include <dev/mlx5/mlx5_fpga_tools/tools.h> 35 #include <dev/mlx5/mlx5_fpga_tools/tools_char.h> 36 37 MODULE_DEPEND(mlx5fpga_tools, linuxkpi, 1, 1, 1); 38 MODULE_DEPEND(mlx5fpga_tools, mlx5, 1, 1, 1); 39 MODULE_DEPEND(mlx5fpga_tools, mlx5fpga, 1, 1, 1); 40 MODULE_VERSION(mlx5fpga_tools, 1); 41 42 static void mlx5_fpga_tools_create(struct mlx5_fpga_device *fdev); 43 static int mlx5_fpga_tools_add(struct mlx5_fpga_device *fdev, u32 vid, u16 pid); 44 static void mlx5_fpga_tools_remove(struct mlx5_fpga_device *fdev); 45 static void mlx5_fpga_tools_destroy(struct mlx5_fpga_device *fdev); 46 47 struct mlx5_fpga_tools_dev *mlx5_fpga_tools_alloc(struct mlx5_fpga_device *fdev); 48 void mlx5_fpga_tools_free(struct mlx5_fpga_tools_dev *tdev); 49 50 static struct mlx5_fpga_client mlx5_fpga_tools_client = { 51 .name = MLX5_FPGA_TOOLS_DRIVER_NAME, 52 .create = mlx5_fpga_tools_create, 53 .add = mlx5_fpga_tools_add, 54 .remove = mlx5_fpga_tools_remove, 55 .destroy = mlx5_fpga_tools_destroy, 56 }; 57 58 struct mlx5_fpga_tools_dev *mlx5_fpga_tools_alloc(struct mlx5_fpga_device *fdev) 59 { 60 int ret; 61 struct mlx5_fpga_tools_dev *tdev; 62 63 tdev = kzalloc(sizeof(*tdev), GFP_KERNEL); 64 if (!tdev) 65 goto out; 66 67 tdev->fdev = fdev; 68 sx_init(&tdev->lock, "mlx5fpgat"); 69 ret = mlx5_fpga_tools_char_add_one(tdev); 70 if (ret) 71 goto err_free; 72 73 goto out; 74 75 err_free: 76 kfree(tdev); 77 tdev = NULL; 78 79 out: 80 return tdev; 81 } 82 83 void mlx5_fpga_tools_free(struct mlx5_fpga_tools_dev *tdev) 84 { 85 mlx5_fpga_tools_char_remove_one(tdev); 86 kfree(tdev); 87 } 88 89 static void mlx5_fpga_tools_create(struct mlx5_fpga_device *fdev) 90 { 91 struct mlx5_fpga_tools_dev *dev = NULL; 92 93 dev_dbg(mlx5_fpga_dev(fdev), "tools_create\n"); 94 95 dev = mlx5_fpga_tools_alloc(fdev); 96 if (!dev) 97 return; 98 99 mlx5_fpga_client_data_set(fdev, &mlx5_fpga_tools_client, dev); 100 } 101 102 static int mlx5_fpga_tools_add(struct mlx5_fpga_device *fdev, u32 vid, u16 pid) 103 { 104 return 0; 105 } 106 107 static void mlx5_fpga_tools_remove(struct mlx5_fpga_device *fdev) 108 { 109 } 110 111 static void mlx5_fpga_tools_destroy(struct mlx5_fpga_device *fdev) 112 { 113 struct mlx5_fpga_tools_dev *dev; 114 115 dev_dbg(mlx5_fpga_dev(fdev), "tools_destroy\n"); 116 117 dev = mlx5_fpga_client_data_get(fdev, &mlx5_fpga_tools_client); 118 if (dev) 119 mlx5_fpga_tools_free(dev); 120 } 121 122 static int __init mlx5_fpga_tools_init(void) 123 { 124 int ret = mlx5_fpga_tools_char_init(); 125 126 if (ret) 127 return ret; 128 mlx5_fpga_client_register(&mlx5_fpga_tools_client); 129 return 0; 130 } 131 132 static void __exit mlx5_fpga_tools_exit(void) 133 { 134 mlx5_fpga_client_unregister(&mlx5_fpga_tools_client); 135 mlx5_fpga_tools_char_deinit(); 136 } 137 138 module_init_order(mlx5_fpga_tools_init, SI_ORDER_SECOND); 139 module_exit_order(mlx5_fpga_tools_exit, SI_ORDER_SECOND); 140