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