1 | // SPDX-License-Identifier: GPL-2.0 OR MIT |
2 | /* |
3 | * Copyright 2014-2022 Advanced Micro Devices, Inc. |
4 | * |
5 | * Permission is hereby granted, free of charge, to any person obtaining a |
6 | * copy of this software and associated documentation files (the "Software"), |
7 | * to deal in the Software without restriction, including without limitation |
8 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
9 | * and/or sell copies of the Software, and to permit persons to whom the |
10 | * Software is furnished to do so, subject to the following conditions: |
11 | * |
12 | * The above copyright notice and this permission notice shall be included in |
13 | * all copies or substantial portions of the Software. |
14 | * |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
18 | * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
19 | * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
20 | * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
21 | * OTHER DEALINGS IN THE SOFTWARE. |
22 | */ |
23 | |
24 | #include <linux/sched.h> |
25 | #include <linux/device.h> |
26 | #include "kfd_priv.h" |
27 | #include "amdgpu_amdkfd.h" |
28 | |
29 | static int kfd_init(void) |
30 | { |
31 | int err; |
32 | |
33 | /* Verify module parameters */ |
34 | if ((sched_policy < KFD_SCHED_POLICY_HWS) || |
35 | (sched_policy > KFD_SCHED_POLICY_NO_HWS)) { |
36 | pr_err("sched_policy has invalid value\n" ); |
37 | return -EINVAL; |
38 | } |
39 | |
40 | /* Verify module parameters */ |
41 | if ((max_num_of_queues_per_device < 1) || |
42 | (max_num_of_queues_per_device > |
43 | KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) { |
44 | pr_err("max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n" ); |
45 | return -EINVAL; |
46 | } |
47 | |
48 | err = kfd_chardev_init(); |
49 | if (err < 0) |
50 | goto err_ioctl; |
51 | |
52 | err = kfd_topology_init(); |
53 | if (err < 0) |
54 | goto err_topology; |
55 | |
56 | err = kfd_process_create_wq(); |
57 | if (err < 0) |
58 | goto err_create_wq; |
59 | |
60 | /* Ignore the return value, so that we can continue |
61 | * to init the KFD, even if procfs isn't craated |
62 | */ |
63 | kfd_procfs_init(); |
64 | |
65 | kfd_debugfs_init(); |
66 | |
67 | return 0; |
68 | |
69 | err_create_wq: |
70 | kfd_topology_shutdown(); |
71 | err_topology: |
72 | kfd_chardev_exit(); |
73 | err_ioctl: |
74 | pr_err("KFD is disabled due to module initialization failure\n" ); |
75 | return err; |
76 | } |
77 | |
78 | static void kfd_exit(void) |
79 | { |
80 | kfd_cleanup_processes(); |
81 | kfd_debugfs_fini(); |
82 | kfd_process_destroy_wq(); |
83 | kfd_procfs_shutdown(); |
84 | kfd_topology_shutdown(); |
85 | kfd_chardev_exit(); |
86 | } |
87 | |
88 | int kgd2kfd_init(void) |
89 | { |
90 | return kfd_init(); |
91 | } |
92 | |
93 | void kgd2kfd_exit(void) |
94 | { |
95 | kfd_exit(); |
96 | } |
97 | |