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