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