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 
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 	return err;
74 }
75 
76 static void kfd_exit(void)
77 {
78 	kfd_debugfs_fini();
79 	kfd_process_destroy_wq();
80 	kfd_procfs_shutdown();
81 	kfd_topology_shutdown();
82 	kfd_chardev_exit();
83 }
84 
85 int kgd2kfd_init(void)
86 {
87 	return kfd_init();
88 }
89 
90 void kgd2kfd_exit(void)
91 {
92 	kfd_exit();
93 }
94