1 | /* |
2 | * SPDX-License-Identifier: MIT |
3 | * |
4 | * Copyright © 2021 Intel Corporation |
5 | */ |
6 | |
7 | #include <drm/drm_drv.h> |
8 | |
9 | #include "gem/i915_gem_context.h" |
10 | #include "gem/i915_gem_object.h" |
11 | #include "i915_active.h" |
12 | #include "i915_driver.h" |
13 | #include "i915_params.h" |
14 | #include "i915_pci.h" |
15 | #include "i915_perf.h" |
16 | #include "i915_request.h" |
17 | #include "i915_scheduler.h" |
18 | #include "i915_selftest.h" |
19 | #include "i915_vma.h" |
20 | #include "i915_vma_resource.h" |
21 | |
22 | static int i915_check_nomodeset(void) |
23 | { |
24 | bool use_kms = true; |
25 | |
26 | /* |
27 | * Enable KMS by default, unless explicitly overriden by |
28 | * either the i915.modeset parameter or by the |
29 | * nomodeset boot option. |
30 | */ |
31 | |
32 | if (i915_modparams.modeset == 0) |
33 | use_kms = false; |
34 | |
35 | if (drm_firmware_drivers_only() && i915_modparams.modeset == -1) |
36 | use_kms = false; |
37 | |
38 | if (!use_kms) { |
39 | /* Silently fail loading to not upset userspace. */ |
40 | DRM_DEBUG_DRIVER("KMS disabled.\n" ); |
41 | return 1; |
42 | } |
43 | |
44 | return 0; |
45 | } |
46 | |
47 | static const struct { |
48 | int (*init)(void); |
49 | void (*exit)(void); |
50 | } init_funcs[] = { |
51 | { .init = i915_check_nomodeset }, |
52 | { .init = i915_active_module_init, |
53 | .exit = i915_active_module_exit }, |
54 | { .init = i915_context_module_init, |
55 | .exit = i915_context_module_exit }, |
56 | { .init = i915_gem_context_module_init, |
57 | .exit = i915_gem_context_module_exit }, |
58 | { .init = i915_objects_module_init, |
59 | .exit = i915_objects_module_exit }, |
60 | { .init = i915_request_module_init, |
61 | .exit = i915_request_module_exit }, |
62 | { .init = i915_scheduler_module_init, |
63 | .exit = i915_scheduler_module_exit }, |
64 | { .init = i915_vma_module_init, |
65 | .exit = i915_vma_module_exit }, |
66 | { .init = i915_vma_resource_module_init, |
67 | .exit = i915_vma_resource_module_exit }, |
68 | { .init = i915_mock_selftests }, |
69 | { .init = i915_pmu_init, |
70 | .exit = i915_pmu_exit }, |
71 | { .init = i915_pci_register_driver, |
72 | .exit = i915_pci_unregister_driver }, |
73 | { .init = i915_perf_sysctl_register, |
74 | .exit = i915_perf_sysctl_unregister }, |
75 | }; |
76 | static int init_progress; |
77 | |
78 | static int __init i915_init(void) |
79 | { |
80 | int err, i; |
81 | |
82 | for (i = 0; i < ARRAY_SIZE(init_funcs); i++) { |
83 | err = init_funcs[i].init(); |
84 | if (err < 0) { |
85 | while (i--) { |
86 | if (init_funcs[i].exit) |
87 | init_funcs[i].exit(); |
88 | } |
89 | return err; |
90 | } else if (err > 0) { |
91 | /* |
92 | * Early-exit success is reserved for things which |
93 | * don't have an exit() function because we have no |
94 | * idea how far they got or how to partially tear |
95 | * them down. |
96 | */ |
97 | WARN_ON(init_funcs[i].exit); |
98 | break; |
99 | } |
100 | } |
101 | |
102 | init_progress = i; |
103 | |
104 | return 0; |
105 | } |
106 | |
107 | static void __exit i915_exit(void) |
108 | { |
109 | int i; |
110 | |
111 | for (i = init_progress - 1; i >= 0; i--) { |
112 | GEM_BUG_ON(i >= ARRAY_SIZE(init_funcs)); |
113 | if (init_funcs[i].exit) |
114 | init_funcs[i].exit(); |
115 | } |
116 | } |
117 | |
118 | module_init(i915_init); |
119 | module_exit(i915_exit); |
120 | |
121 | MODULE_AUTHOR("Tungsten Graphics, Inc." ); |
122 | MODULE_AUTHOR("Intel Corporation" ); |
123 | |
124 | MODULE_DESCRIPTION(DRIVER_DESC); |
125 | MODULE_LICENSE("GPL and additional rights" ); |
126 | |