2 * Copyright 2014 Advanced Micro Devices, Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
23 #include <linux/module.h>
24 #include <linux/sched.h>
25 #include <linux/moduleparam.h>
26 #include <linux/device.h>
29 #define KFD_DRIVER_AUTHOR "AMD Inc. and others"
31 #define KFD_DRIVER_DESC "Standalone HSA driver for AMD's GPUs"
32 #define KFD_DRIVER_DATE "20141113"
33 #define KFD_DRIVER_MAJOR 0
34 #define KFD_DRIVER_MINOR 7
35 #define KFD_DRIVER_PATCHLEVEL 0
37 const struct kfd2kgd_calls *kfd2kgd;
38 static const struct kgd2kfd_calls kgd2kfd = {
40 .probe = kgd2kfd_probe,
41 .device_init = kgd2kfd_device_init,
42 .device_exit = kgd2kfd_device_exit,
43 .interrupt = kgd2kfd_interrupt,
44 .suspend = kgd2kfd_suspend,
45 .resume = kgd2kfd_resume,
48 int sched_policy = KFD_SCHED_POLICY_HWS;
49 module_param(sched_policy, int, 0444);
50 MODULE_PARM_DESC(sched_policy,
51 "Kernel cmdline parameter that defines the amdkfd scheduling policy");
53 int max_num_of_queues_per_device = KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT;
54 module_param(max_num_of_queues_per_device, int, 0444);
55 MODULE_PARM_DESC(max_num_of_queues_per_device,
56 "Maximum number of supported queues per device (1 = Minimum, 4096 = default)");
58 bool kgd2kfd_init(unsigned interface_version,
59 const struct kfd2kgd_calls *f2g,
60 const struct kgd2kfd_calls **g2f)
63 * Only one interface version is supported,
64 * no kfd/kgd version skew allowed.
66 if (interface_version != KFD_INTERFACE_VERSION)
69 /* Protection against multiple amd kgd loads */
78 EXPORT_SYMBOL(kgd2kfd_init);
80 void kgd2kfd_exit(void)
84 static int __init kfd_module_init(void)
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");
97 /* Verify module parameters */
98 if ((max_num_of_queues_per_device < 0) ||
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 0 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
105 err = kfd_pasid_init();
109 err = kfd_chardev_init();
113 err = kfd_topology_init();
117 kfd_process_create_wq();
119 dev_info(kfd_device, "Initialized module\n");
131 static void __exit kfd_module_exit(void)
133 kfd_process_destroy_wq();
134 kfd_topology_shutdown();
137 dev_info(kfd_device, "Removed module\n");
140 module_init(kfd_module_init);
141 module_exit(kfd_module_exit);
143 MODULE_AUTHOR(KFD_DRIVER_AUTHOR);
144 MODULE_DESCRIPTION(KFD_DRIVER_DESC);
145 MODULE_LICENSE("GPL and additional rights");
146 MODULE_VERSION(__stringify(KFD_DRIVER_MAJOR) "."
147 __stringify(KFD_DRIVER_MINOR) "."
148 __stringify(KFD_DRIVER_PATCHLEVEL));