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
mlx5_fpga_tools_alloc(struct mlx5_fpga_device * fdev)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
mlx5_fpga_tools_free(struct mlx5_fpga_tools_dev * tdev)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
mlx5_fpga_tools_create(struct mlx5_fpga_device * fdev)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
mlx5_fpga_tools_add(struct mlx5_fpga_device * fdev,u32 vid,u16 pid)102 static int mlx5_fpga_tools_add(struct mlx5_fpga_device *fdev, u32 vid, u16 pid)
103 {
104 return 0;
105 }
106
mlx5_fpga_tools_remove(struct mlx5_fpga_device * fdev)107 static void mlx5_fpga_tools_remove(struct mlx5_fpga_device *fdev)
108 {
109 }
110
mlx5_fpga_tools_destroy(struct mlx5_fpga_device * fdev)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
mlx5_fpga_tools_init(void)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
mlx5_fpga_tools_exit(void)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