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