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 "20150421"
33 #define KFD_DRIVER_MAJOR 0
34 #define KFD_DRIVER_MINOR 7
35 #define KFD_DRIVER_PATCHLEVEL 2
37 static const struct kgd2kfd_calls kgd2kfd
= {
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
,
47 int sched_policy
= KFD_SCHED_POLICY_HWS
;
48 module_param(sched_policy
, int, 0444);
49 MODULE_PARM_DESC(sched_policy
,
50 "Scheduling policy (0 = HWS (Default), 1 = HWS without over-subscription, 2 = Non-HWS (Used for debugging only)");
52 int max_num_of_queues_per_device
= KFD_MAX_NUM_OF_QUEUES_PER_DEVICE_DEFAULT
;
53 module_param(max_num_of_queues_per_device
, int, 0444);
54 MODULE_PARM_DESC(max_num_of_queues_per_device
,
55 "Maximum number of supported queues per device (1 = Minimum, 4096 = default)");
58 module_param(send_sigterm
, int, 0444);
59 MODULE_PARM_DESC(send_sigterm
,
60 "Send sigterm to HSA process on unhandled exception (0 = disable, 1 = enable)");
62 bool kgd2kfd_init(unsigned interface_version
, const struct kgd2kfd_calls
**g2f
)
65 * Only one interface version is supported,
66 * no kfd/kgd version skew allowed.
68 if (interface_version
!= KFD_INTERFACE_VERSION
)
75 EXPORT_SYMBOL(kgd2kfd_init
);
77 void kgd2kfd_exit(void)
81 static int __init
kfd_module_init(void)
85 /* Verify module parameters */
86 if ((sched_policy
< KFD_SCHED_POLICY_HWS
) ||
87 (sched_policy
> KFD_SCHED_POLICY_NO_HWS
)) {
88 pr_err("kfd: sched_policy has invalid value\n");
92 /* Verify module parameters */
93 if ((max_num_of_queues_per_device
< 1) ||
94 (max_num_of_queues_per_device
>
95 KFD_MAX_NUM_OF_QUEUES_PER_DEVICE
)) {
96 pr_err("kfd: max_num_of_queues_per_device must be between 1 to KFD_MAX_NUM_OF_QUEUES_PER_DEVICE\n");
100 err
= kfd_pasid_init();
104 err
= kfd_chardev_init();
108 err
= kfd_topology_init();
112 kfd_process_create_wq();
114 dev_info(kfd_device
, "Initialized module\n");
126 static void __exit
kfd_module_exit(void)
128 kfd_process_destroy_wq();
129 kfd_topology_shutdown();
132 dev_info(kfd_device
, "Removed module\n");
135 module_init(kfd_module_init
);
136 module_exit(kfd_module_exit
);
138 MODULE_AUTHOR(KFD_DRIVER_AUTHOR
);
139 MODULE_DESCRIPTION(KFD_DRIVER_DESC
);
140 MODULE_LICENSE("GPL and additional rights");
141 MODULE_VERSION(__stringify(KFD_DRIVER_MAJOR
) "."
142 __stringify(KFD_DRIVER_MINOR
) "."
143 __stringify(KFD_DRIVER_PATCHLEVEL
));