tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
fork
Configure Feed
Select the types of activity you want to include in your feed.
1// SPDX-License-Identifier: MIT
2/*
3 * Copyright © 2021 Intel Corporation
4 */
5
6#include "xe_module.h"
7
8#include <linux/init.h>
9#include <linux/module.h>
10
11#include <drm/drm_module.h>
12
13#include "xe_drv.h"
14#include "xe_hw_fence.h"
15#include "xe_pci.h"
16#include "xe_pm.h"
17#include "xe_observation.h"
18#include "xe_sched_job.h"
19
20struct xe_modparam xe_modparam = {
21 .probe_display = true,
22 .guc_log_level = 3,
23 .force_probe = CONFIG_DRM_XE_FORCE_PROBE,
24 .wedged_mode = 1,
25 .svm_notifier_size = 512,
26 /* the rest are 0 by default */
27};
28
29module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size, uint, 0600);
30MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size(in MiB), must be power of 2");
31
32module_param_named(always_migrate_to_vram, xe_modparam.always_migrate_to_vram, bool, 0444);
33MODULE_PARM_DESC(always_migrate_to_vram, "Always migrate to VRAM on GPU fault");
34
35module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444);
36MODULE_PARM_DESC(force_execlist, "Force Execlist submission");
37
38module_param_named(probe_display, xe_modparam.probe_display, bool, 0444);
39MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched (default: true)");
40
41module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, uint, 0600);
42MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size(in MiB)");
43
44module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600);
45MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1..5=enable with verbosity min..max)");
46
47module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400);
48MODULE_PARM_DESC(guc_firmware_path,
49 "GuC firmware path to use instead of the default one");
50
51module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400);
52MODULE_PARM_DESC(huc_firmware_path,
53 "HuC firmware path to use instead of the default one - empty string disables");
54
55module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400);
56MODULE_PARM_DESC(gsc_firmware_path,
57 "GSC firmware path to use instead of the default one - empty string disables");
58
59module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400);
60MODULE_PARM_DESC(force_probe,
61 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details.");
62
63#ifdef CONFIG_PCI_IOV
64module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400);
65MODULE_PARM_DESC(max_vfs,
66 "Limit number of Virtual Functions (VFs) that could be managed. "
67 "(0 = no VFs [default]; N = allow up to N VFs)");
68#endif
69
70module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, int, 0600);
71MODULE_PARM_DESC(wedged_mode,
72 "Module's default policy for the wedged mode - 0=never, 1=upon-critical-errors[default], 2=upon-any-hang");
73
74static int xe_check_nomodeset(void)
75{
76 if (drm_firmware_drivers_only())
77 return -ENODEV;
78
79 return 0;
80}
81
82struct init_funcs {
83 int (*init)(void);
84 void (*exit)(void);
85};
86
87static const struct init_funcs init_funcs[] = {
88 {
89 .init = xe_check_nomodeset,
90 },
91 {
92 .init = xe_hw_fence_module_init,
93 .exit = xe_hw_fence_module_exit,
94 },
95 {
96 .init = xe_sched_job_module_init,
97 .exit = xe_sched_job_module_exit,
98 },
99 {
100 .init = xe_register_pci_driver,
101 .exit = xe_unregister_pci_driver,
102 },
103 {
104 .init = xe_observation_sysctl_register,
105 .exit = xe_observation_sysctl_unregister,
106 },
107 {
108 .init = xe_pm_module_init,
109 },
110};
111
112static int __init xe_call_init_func(unsigned int i)
113{
114 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
115 return 0;
116 if (!init_funcs[i].init)
117 return 0;
118
119 return init_funcs[i].init();
120}
121
122static void xe_call_exit_func(unsigned int i)
123{
124 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
125 return;
126 if (!init_funcs[i].exit)
127 return;
128
129 init_funcs[i].exit();
130}
131
132static int __init xe_init(void)
133{
134 int err, i;
135
136 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {
137 err = xe_call_init_func(i);
138 if (err) {
139 while (i--)
140 xe_call_exit_func(i);
141 return err;
142 }
143 }
144
145 return 0;
146}
147
148static void __exit xe_exit(void)
149{
150 int i;
151
152 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--)
153 xe_call_exit_func(i);
154}
155
156module_init(xe_init);
157module_exit(xe_exit);
158
159MODULE_AUTHOR("Intel Corporation");
160
161MODULE_DESCRIPTION(DRIVER_DESC);
162MODULE_LICENSE("GPL and additional rights");