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_configfs.h"
15 #include "xe_hw_fence.h"
16 #include "xe_pci.h"
17 #include "xe_pm.h"
18 #include "xe_observation.h"
19 #include "xe_sched_job.h"
20
21 #if IS_ENABLED(CONFIG_DRM_XE_DEBUG)
22 #define DEFAULT_GUC_LOG_LEVEL 3
23 #else
24 #define DEFAULT_GUC_LOG_LEVEL 1
25 #endif
26
27 #define DEFAULT_PROBE_DISPLAY true
28 #define DEFAULT_VRAM_BAR_SIZE 0
29 #define DEFAULT_FORCE_PROBE CONFIG_DRM_XE_FORCE_PROBE
30 #define DEFAULT_MAX_VFS ~0
31 #define DEFAULT_MAX_VFS_STR "unlimited"
32 #define DEFAULT_WEDGED_MODE 1
33 #define DEFAULT_SVM_NOTIFIER_SIZE 512
34
35 struct xe_modparam xe_modparam = {
36 .probe_display = DEFAULT_PROBE_DISPLAY,
37 .guc_log_level = DEFAULT_GUC_LOG_LEVEL,
38 .force_probe = DEFAULT_FORCE_PROBE,
39 #ifdef CONFIG_PCI_IOV
40 .max_vfs = DEFAULT_MAX_VFS,
41 #endif
42 .wedged_mode = DEFAULT_WEDGED_MODE,
43 .svm_notifier_size = DEFAULT_SVM_NOTIFIER_SIZE,
44 /* the rest are 0 by default */
45 };
46
47 module_param_named(svm_notifier_size, xe_modparam.svm_notifier_size, uint, 0600);
48 MODULE_PARM_DESC(svm_notifier_size, "Set the svm notifier size in MiB, must be power of 2 "
49 "[default=" __stringify(DEFAULT_SVM_NOTIFIER_SIZE) "]");
50
51 module_param_named_unsafe(force_execlist, xe_modparam.force_execlist, bool, 0444);
52 MODULE_PARM_DESC(force_execlist, "Force Execlist submission");
53
54 module_param_named(probe_display, xe_modparam.probe_display, bool, 0444);
55 MODULE_PARM_DESC(probe_display, "Probe display HW, otherwise it's left untouched "
56 "[default=" __stringify(DEFAULT_PROBE_DISPLAY) "])");
57
58 module_param_named(vram_bar_size, xe_modparam.force_vram_bar_size, int, 0600);
59 MODULE_PARM_DESC(vram_bar_size, "Set the vram bar size in MiB (<0=disable-resize, 0=max-needed-size, >0=force-size "
60 "[default=" __stringify(DEFAULT_VRAM_BAR_SIZE) "])");
61
62 module_param_named(guc_log_level, xe_modparam.guc_log_level, int, 0600);
63 MODULE_PARM_DESC(guc_log_level, "GuC firmware logging level (0=disable, 1=normal, 2..5=verbose-levels "
64 "[default=" __stringify(DEFAULT_GUC_LOG_LEVEL) "])");
65
66 module_param_named_unsafe(guc_firmware_path, xe_modparam.guc_firmware_path, charp, 0400);
67 MODULE_PARM_DESC(guc_firmware_path,
68 "GuC firmware path to use instead of the default one");
69
70 module_param_named_unsafe(huc_firmware_path, xe_modparam.huc_firmware_path, charp, 0400);
71 MODULE_PARM_DESC(huc_firmware_path,
72 "HuC firmware path to use instead of the default one - empty string disables");
73
74 module_param_named_unsafe(gsc_firmware_path, xe_modparam.gsc_firmware_path, charp, 0400);
75 MODULE_PARM_DESC(gsc_firmware_path,
76 "GSC firmware path to use instead of the default one - empty string disables");
77
78 module_param_named_unsafe(force_probe, xe_modparam.force_probe, charp, 0400);
79 MODULE_PARM_DESC(force_probe,
80 "Force probe options for specified devices. See CONFIG_DRM_XE_FORCE_PROBE for details "
81 "[default=" DEFAULT_FORCE_PROBE "])");
82
83 #ifdef CONFIG_PCI_IOV
84 module_param_named(max_vfs, xe_modparam.max_vfs, uint, 0400);
85 MODULE_PARM_DESC(max_vfs,
86 "Limit number of Virtual Functions (VFs) that could be managed. "
87 "(0=no VFs; N=allow up to N VFs "
88 "[default=" DEFAULT_MAX_VFS_STR "])");
89 #endif
90
91 module_param_named_unsafe(wedged_mode, xe_modparam.wedged_mode, int, 0600);
92 MODULE_PARM_DESC(wedged_mode,
93 "Module's default policy for the wedged mode (0=never, 1=upon-critical-errors, 2=upon-any-hang "
94 "[default=" __stringify(DEFAULT_WEDGED_MODE) "])");
95
xe_check_nomodeset(void)96 static int xe_check_nomodeset(void)
97 {
98 if (drm_firmware_drivers_only())
99 return -ENODEV;
100
101 return 0;
102 }
103
104 struct init_funcs {
105 int (*init)(void);
106 void (*exit)(void);
107 };
108
109 static const struct init_funcs init_funcs[] = {
110 {
111 .init = xe_check_nomodeset,
112 },
113 {
114 .init = xe_configfs_init,
115 .exit = xe_configfs_exit,
116 },
117 {
118 .init = xe_hw_fence_module_init,
119 .exit = xe_hw_fence_module_exit,
120 },
121 {
122 .init = xe_sched_job_module_init,
123 .exit = xe_sched_job_module_exit,
124 },
125 {
126 .init = xe_register_pci_driver,
127 .exit = xe_unregister_pci_driver,
128 },
129 {
130 .init = xe_observation_sysctl_register,
131 .exit = xe_observation_sysctl_unregister,
132 },
133 {
134 .init = xe_pm_module_init,
135 },
136 };
137
xe_call_init_func(unsigned int i)138 static int __init xe_call_init_func(unsigned int i)
139 {
140 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
141 return 0;
142 if (!init_funcs[i].init)
143 return 0;
144
145 return init_funcs[i].init();
146 }
147
xe_call_exit_func(unsigned int i)148 static void xe_call_exit_func(unsigned int i)
149 {
150 if (WARN_ON(i >= ARRAY_SIZE(init_funcs)))
151 return;
152 if (!init_funcs[i].exit)
153 return;
154
155 init_funcs[i].exit();
156 }
157
xe_init(void)158 static int __init xe_init(void)
159 {
160 int err, i;
161
162 for (i = 0; i < ARRAY_SIZE(init_funcs); i++) {
163 err = xe_call_init_func(i);
164 if (err) {
165 while (i--)
166 xe_call_exit_func(i);
167 return err;
168 }
169 }
170
171 return 0;
172 }
173
xe_exit(void)174 static void __exit xe_exit(void)
175 {
176 int i;
177
178 for (i = ARRAY_SIZE(init_funcs) - 1; i >= 0; i--)
179 xe_call_exit_func(i);
180 }
181
182 module_init(xe_init);
183 module_exit(xe_exit);
184
185 MODULE_AUTHOR("Intel Corporation");
186
187 MODULE_DESCRIPTION(DRIVER_DESC);
188 MODULE_LICENSE("GPL and additional rights");
189