1 /* $NetBSD: kfd_module.c,v 1.3 2021/12/18 23:44:59 riastradh Exp $ */
2
3 /*
4 * Copyright 2014 Advanced Micro Devices, Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 */
24
25 #include <sys/cdefs.h>
26 __KERNEL_RCSID(0, "$NetBSD: kfd_module.c,v 1.3 2021/12/18 23:44:59 riastradh Exp $");
27
28 #include <linux/sched.h>
29 #include <linux/device.h>
30 #include "kfd_priv.h"
31 #include "amdgpu_amdkfd.h"
32
kfd_init(void)33 static int kfd_init(void)
34 {
35 int err;
36
37 /* Verify module parameters */
38 if ((sched_policy < KFD_SCHED_POLICY_HWS) ||
39 (sched_policy > KFD_SCHED_POLICY_NO_HWS)) {
40 pr_err("sched_policy has invalid value\n");
41 return -EINVAL;
42 }
43
44 /* Verify module parameters */
45 if ((max_num_of_queues_per_device < 1) ||
46 (max_num_of_queues_per_device >
47 KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) {
48 pr_err("max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
49 return -EINVAL;
50 }
51
52 err = kfd_chardev_init();
53 if (err < 0)
54 goto err_ioctl;
55
56 err = kfd_topology_init();
57 if (err < 0)
58 goto err_topology;
59
60 err = kfd_process_create_wq();
61 if (err < 0)
62 goto err_create_wq;
63
64 /* Ignore the return value, so that we can continue
65 * to init the KFD, even if procfs isn't craated
66 */
67 kfd_procfs_init();
68
69 kfd_debugfs_init();
70
71 return 0;
72
73 err_create_wq:
74 kfd_topology_shutdown();
75 err_topology:
76 kfd_chardev_exit();
77 err_ioctl:
78 return err;
79 }
80
kfd_exit(void)81 static void kfd_exit(void)
82 {
83 kfd_debugfs_fini();
84 kfd_process_destroy_wq();
85 kfd_procfs_shutdown();
86 kfd_topology_shutdown();
87 kfd_chardev_exit();
88 }
89
kgd2kfd_init(void)90 int kgd2kfd_init(void)
91 {
92 return kfd_init();
93 }
94
kgd2kfd_exit(void)95 void kgd2kfd_exit(void)
96 {
97 kfd_exit();
98 }
99