Loading...
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
29static 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
69err_create_wq:
70 kfd_topology_shutdown();
71err_topology:
72 kfd_chardev_exit();
73err_ioctl:
74 pr_err("KFD is disabled due to module initialization failure\n");
75 return err;
76}
77
78static 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
88int kgd2kfd_init(void)
89{
90 return kfd_init();
91}
92
93void kgd2kfd_exit(void)
94{
95 kfd_exit();
96}
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/module.h>
24#include <linux/sched.h>
25#include <linux/moduleparam.h>
26#include <linux/device.h>
27#include "kfd_priv.h"
28
29#define KFD_DRIVER_AUTHOR "AMD Inc. and others"
30
31#define KFD_DRIVER_DESC "Standalone HSA driver for AMD's GPUs"
32#define KFD_DRIVER_DATE "20150421"
33#define KFD_DRIVER_MAJOR 0
34#define KFD_DRIVER_MINOR 7
35#define KFD_DRIVER_PATCHLEVEL 2
36
37static const struct kgd2kfd_calls kgd2kfd = {
38 .exit = kgd2kfd_exit,
39 .probe = kgd2kfd_probe,
40 .device_init = kgd2kfd_device_init,
41 .device_exit = kgd2kfd_device_exit,
42 .interrupt = kgd2kfd_interrupt,
43 .suspend = kgd2kfd_suspend,
44 .resume = kgd2kfd_resume,
45};
46
47int sched_policy = KFD_SCHED_POLICY_HWS;
48module_param(sched_policy, int, 0444);
49MODULE_PARM_DESC(sched_policy,
50 "Scheduling policy (0 = HWS (Default), 1 = HWS without over-subscription, 2 = Non-HWS (Used for debugging only)");
51
52int max_num_of_queues_per_device = KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT;
53module_param(max_num_of_queues_per_device, int, 0444);
54MODULE_PARM_DESC(max_num_of_queues_per_device,
55 "Maximum number of supported queues per device (1 = Minimum, 4096 = default)");
56
57int send_sigterm;
58module_param(send_sigterm, int, 0444);
59MODULE_PARM_DESC(send_sigterm,
60 "Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)");
61
62static int amdkfd_init_completed;
63
64int kgd2kfd_init(unsigned interface_version, const struct kgd2kfd_calls **g2f)
65{
66 if (!amdkfd_init_completed)
67 return -EPROBE_DEFER;
68
69 /*
70 * Only one interface version is supported,
71 * no kfd/kgd version skew allowed.
72 */
73 if (interface_version != KFD_INTERFACE_VERSION)
74 return -EINVAL;
75
76 *g2f = &kgd2kfd;
77
78 return 0;
79}
80EXPORT_SYMBOL(kgd2kfd_init);
81
82void kgd2kfd_exit(void)
83{
84}
85
86static int __init kfd_module_init(void)
87{
88 int err;
89
90 /* Verify module parameters */
91 if ((sched_policy < KFD_SCHED_POLICY_HWS) ||
92 (sched_policy > KFD_SCHED_POLICY_NO_HWS)) {
93 pr_err("kfd: sched_policy has invalid value\n");
94 return -1;
95 }
96
97 /* Verify module parameters */
98 if ((max_num_of_queues_per_device < 1) ||
99 (max_num_of_queues_per_device >
100 KFD_MAX_NUM_OF_QUEUES_PER_DEVICE)) {
101 pr_err("kfd: max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
102 return -1;
103 }
104
105 err = kfd_pasid_init();
106 if (err < 0)
107 goto err_pasid;
108
109 err = kfd_chardev_init();
110 if (err < 0)
111 goto err_ioctl;
112
113 err = kfd_topology_init();
114 if (err < 0)
115 goto err_topology;
116
117 kfd_process_create_wq();
118
119 amdkfd_init_completed = 1;
120
121 dev_info(kfd_device, "Initialized module\n");
122
123 return 0;
124
125err_topology:
126 kfd_chardev_exit();
127err_ioctl:
128 kfd_pasid_exit();
129err_pasid:
130 return err;
131}
132
133static void __exit kfd_module_exit(void)
134{
135 amdkfd_init_completed = 0;
136
137 kfd_process_destroy_wq();
138 kfd_topology_shutdown();
139 kfd_chardev_exit();
140 kfd_pasid_exit();
141 dev_info(kfd_device, "Removed module\n");
142}
143
144module_init(kfd_module_init);
145module_exit(kfd_module_exit);
146
147MODULE_AUTHOR(KFD_DRIVER_AUTHOR);
148MODULE_DESCRIPTION(KFD_DRIVER_DESC);
149MODULE_LICENSE("GPL and additional rights");
150MODULE_VERSION(__stringify(KFD_DRIVER_MAJOR) "."
151 __stringify(KFD_DRIVER_MINOR) "."
152 __stringify(KFD_DRIVER_PATCHLEVEL));